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| author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
| commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
| tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/net | |
| download | lwn-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz lwn-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip | |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/net')
131 files changed, 26615 insertions, 0 deletions
diff --git a/include/net/act_api.h b/include/net/act_api.h new file mode 100644 index 000000000000..ed00a995f576 --- /dev/null +++ b/include/net/act_api.h @@ -0,0 +1,116 @@ +#ifndef __NET_ACT_API_H +#define __NET_ACT_API_H + +/* + * Public police action API for classifiers/qdiscs + */ + +#include <net/sch_generic.h> +#include <net/pkt_sched.h> + +#define tca_gen(name) \ +struct tcf_##name *next; \ + u32 index; \ + int refcnt; \ + int bindcnt; \ + u32 capab; \ + int action; \ + struct tcf_t tm; \ + struct gnet_stats_basic bstats; \ + struct gnet_stats_queue qstats; \ + struct gnet_stats_rate_est rate_est; \ + spinlock_t *stats_lock; \ + spinlock_t lock + +struct tcf_police +{ + tca_gen(police); + int result; + u32 ewma_rate; + u32 burst; + u32 mtu; + u32 toks; + u32 ptoks; + psched_time_t t_c; + struct qdisc_rate_table *R_tab; + struct qdisc_rate_table *P_tab; +}; + +#ifdef CONFIG_NET_CLS_ACT + +#define ACT_P_CREATED 1 +#define ACT_P_DELETED 1 + +struct tcf_act_hdr +{ + tca_gen(act_hdr); +}; + +struct tc_action +{ + void *priv; + struct tc_action_ops *ops; + __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ + __u32 order; + struct tc_action *next; +}; + +#define TCA_CAP_NONE 0 +struct tc_action_ops +{ + struct tc_action_ops *next; + char kind[IFNAMSIZ]; + __u32 type; /* TBD to match kind */ + __u32 capab; /* capabilities includes 4 bit version */ + struct module *owner; + int (*act)(struct sk_buff **, struct tc_action *); + int (*get_stats)(struct sk_buff *, struct tc_action *); + int (*dump)(struct sk_buff *, struct tc_action *,int , int); + int (*cleanup)(struct tc_action *, int bind); + int (*lookup)(struct tc_action *, u32 ); + int (*init)(struct rtattr *,struct rtattr *,struct tc_action *, int , int ); + int (*walk)(struct sk_buff *, struct netlink_callback *, int , struct tc_action *); +}; + +extern int tcf_register_action(struct tc_action_ops *a); +extern int tcf_unregister_action(struct tc_action_ops *a); +extern void tcf_action_destroy(struct tc_action *a, int bind); +extern int tcf_action_exec(struct sk_buff *skb, struct tc_action *a, struct tcf_result *res); +extern struct tc_action *tcf_action_init(struct rtattr *rta, struct rtattr *est, char *n, int ovr, int bind, int *err); +extern struct tc_action *tcf_action_init_1(struct rtattr *rta, struct rtattr *est, char *n, int ovr, int bind, int *err); +extern int tcf_action_dump(struct sk_buff *skb, struct tc_action *a, int, int); +extern int tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int, int); +extern int tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int, int); +extern int tcf_action_copy_stats (struct sk_buff *,struct tc_action *, int); +#endif /* CONFIG_NET_CLS_ACT */ + +extern int tcf_police(struct sk_buff *skb, struct tcf_police *p); +extern void tcf_police_destroy(struct tcf_police *p); +extern struct tcf_police * tcf_police_locate(struct rtattr *rta, struct rtattr *est); +extern int tcf_police_dump(struct sk_buff *skb, struct tcf_police *p); +extern int tcf_police_dump_stats(struct sk_buff *skb, struct tcf_police *p); + +static inline int +tcf_police_release(struct tcf_police *p, int bind) +{ + int ret = 0; +#ifdef CONFIG_NET_CLS_ACT + if (p) { + if (bind) { + p->bindcnt--; + } + p->refcnt--; + if (p->refcnt <= 0 && !p->bindcnt) { + tcf_police_destroy(p); + ret = 1; + } + } +#else + if (p && --p->refcnt == 0) + tcf_police_destroy(p); + +#endif /* CONFIG_NET_CLS_ACT */ + return ret; +} + +#endif diff --git a/include/net/addrconf.h b/include/net/addrconf.h new file mode 100644 index 000000000000..7af9a13cb9be --- /dev/null +++ b/include/net/addrconf.h @@ -0,0 +1,240 @@ +#ifndef _ADDRCONF_H +#define _ADDRCONF_H + +#define RETRANS_TIMER HZ + +#define MAX_RTR_SOLICITATIONS 3 +#define RTR_SOLICITATION_INTERVAL (4*HZ) + +#define MIN_VALID_LIFETIME (2*3600) /* 2 hours */ + +#define TEMP_VALID_LIFETIME (7*86400) +#define TEMP_PREFERRED_LIFETIME (86400) +#define REGEN_MAX_RETRY (5) +#define MAX_DESYNC_FACTOR (600) + +#define ADDR_CHECK_FREQUENCY (120*HZ) + +#define IPV6_MAX_ADDRESSES 16 + +struct prefix_info { + __u8 type; + __u8 length; + __u8 prefix_len; + +#if defined(__BIG_ENDIAN_BITFIELD) + __u8 onlink : 1, + autoconf : 1, + reserved : 6; +#elif defined(__LITTLE_ENDIAN_BITFIELD) + __u8 reserved : 6, + autoconf : 1, + onlink : 1; +#else +#error "Please fix <asm/byteorder.h>" +#endif + __u32 valid; + __u32 prefered; + __u32 reserved2; + + struct in6_addr prefix; +}; + + +#ifdef __KERNEL__ + +#include <linux/in6.h> +#include <linux/netdevice.h> +#include <net/if_inet6.h> + +#define IN6_ADDR_HSIZE 16 + +extern int addrconf_init(void); +extern void addrconf_cleanup(void); + +extern int addrconf_add_ifaddr(void __user *arg); +extern int addrconf_del_ifaddr(void __user *arg); +extern int addrconf_set_dstaddr(void __user *arg); + +extern int ipv6_chk_addr(struct in6_addr *addr, + struct net_device *dev, + int strict); +extern struct inet6_ifaddr * ipv6_get_ifaddr(struct in6_addr *addr, + struct net_device *dev, + int strict); +extern int ipv6_get_saddr(struct dst_entry *dst, + struct in6_addr *daddr, + struct in6_addr *saddr); +extern int ipv6_dev_get_saddr(struct net_device *dev, + struct in6_addr *daddr, + struct in6_addr *saddr); +extern int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *); +extern int ipv6_rcv_saddr_equal(const struct sock *sk, + const struct sock *sk2); +extern void addrconf_join_solict(struct net_device *dev, + struct in6_addr *addr); +extern void addrconf_leave_solict(struct inet6_dev *idev, + struct in6_addr *addr); + +/* + * multicast prototypes (mcast.c) + */ +extern int ipv6_sock_mc_join(struct sock *sk, int ifindex, + struct in6_addr *addr); +extern int ipv6_sock_mc_drop(struct sock *sk, int ifindex, + struct in6_addr *addr); +extern void ipv6_sock_mc_close(struct sock *sk); +extern int inet6_mc_check(struct sock *sk, struct in6_addr *mc_addr, + struct in6_addr *src_addr); + +extern int ipv6_dev_mc_inc(struct net_device *dev, struct in6_addr *addr); +extern int __ipv6_dev_mc_dec(struct inet6_dev *idev, struct in6_addr *addr); +extern int ipv6_dev_mc_dec(struct net_device *dev, struct in6_addr *addr); +extern void ipv6_mc_up(struct inet6_dev *idev); +extern void ipv6_mc_down(struct inet6_dev *idev); +extern void ipv6_mc_init_dev(struct inet6_dev *idev); +extern void ipv6_mc_destroy_dev(struct inet6_dev *idev); +extern void addrconf_dad_failure(struct inet6_ifaddr *ifp); + +extern int ipv6_chk_mcast_addr(struct net_device *dev, struct in6_addr *group, + struct in6_addr *src_addr); +extern int ipv6_is_mld(struct sk_buff *skb, int nexthdr); + +extern void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len); + +extern int ipv6_get_hoplimit(struct net_device *dev); + +/* + * anycast prototypes (anycast.c) + */ +extern int ipv6_sock_ac_join(struct sock *sk,int ifindex,struct in6_addr *addr); +extern int ipv6_sock_ac_drop(struct sock *sk,int ifindex,struct in6_addr *addr); +extern void ipv6_sock_ac_close(struct sock *sk); +extern int inet6_ac_check(struct sock *sk, struct in6_addr *addr, int ifindex); + +extern int ipv6_dev_ac_inc(struct net_device *dev, struct in6_addr *addr); +extern int __ipv6_dev_ac_dec(struct inet6_dev *idev, struct in6_addr *addr); +extern int ipv6_chk_acast_addr(struct net_device *dev, struct in6_addr *addr); + + +/* Device notifier */ +extern int register_inet6addr_notifier(struct notifier_block *nb); +extern int unregister_inet6addr_notifier(struct notifier_block *nb); + +static inline struct inet6_dev * +__in6_dev_get(struct net_device *dev) +{ + return (struct inet6_dev *)dev->ip6_ptr; +} + +extern rwlock_t addrconf_lock; + +static inline struct inet6_dev * +in6_dev_get(struct net_device *dev) +{ + struct inet6_dev *idev = NULL; + read_lock(&addrconf_lock); + idev = dev->ip6_ptr; + if (idev) + atomic_inc(&idev->refcnt); + read_unlock(&addrconf_lock); + return idev; +} + +extern void in6_dev_finish_destroy(struct inet6_dev *idev); + +static inline void +in6_dev_put(struct inet6_dev *idev) +{ + if (atomic_dec_and_test(&idev->refcnt)) + in6_dev_finish_destroy(idev); +} + +#define __in6_dev_put(idev) atomic_dec(&(idev)->refcnt) +#define in6_dev_hold(idev) atomic_inc(&(idev)->refcnt) + + +extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp); + +static inline void in6_ifa_put(struct inet6_ifaddr *ifp) +{ + if (atomic_dec_and_test(&ifp->refcnt)) + inet6_ifa_finish_destroy(ifp); +} + +#define __in6_ifa_put(ifp) atomic_dec(&(ifp)->refcnt) +#define in6_ifa_hold(ifp) atomic_inc(&(ifp)->refcnt) + + +extern void addrconf_forwarding_on(void); +/* + * Hash function taken from net_alias.c + */ + +static __inline__ u8 ipv6_addr_hash(const struct in6_addr *addr) +{ + __u32 word; + + /* + * We perform the hash function over the last 64 bits of the address + * This will include the IEEE address token on links that support it. + */ + + word = addr->s6_addr32[2] ^ addr->s6_addr32[3]; + word ^= (word >> 16); + word ^= (word >> 8); + + return ((word ^ (word >> 4)) & 0x0f); +} + +/* + * compute link-local solicited-node multicast address + */ + +static inline void addrconf_addr_solict_mult(const struct in6_addr *addr, + struct in6_addr *solicited) +{ + ipv6_addr_set(solicited, + __constant_htonl(0xFF020000), 0, + __constant_htonl(0x1), + __constant_htonl(0xFF000000) | addr->s6_addr32[3]); +} + + +static inline void ipv6_addr_all_nodes(struct in6_addr *addr) +{ + ipv6_addr_set(addr, + __constant_htonl(0xFF020000), 0, 0, + __constant_htonl(0x1)); +} + +static inline void ipv6_addr_all_routers(struct in6_addr *addr) +{ + ipv6_addr_set(addr, + __constant_htonl(0xFF020000), 0, 0, + __constant_htonl(0x2)); +} + +static inline int ipv6_addr_is_multicast(const struct in6_addr *addr) +{ + return (addr->s6_addr32[0] & __constant_htonl(0xFF000000)) == __constant_htonl(0xFF000000); +} + +static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr) +{ + return (addr->s6_addr32[0] == htonl(0xff020000) && + addr->s6_addr32[1] == 0 && + addr->s6_addr32[2] == 0 && + addr->s6_addr32[3] == htonl(0x00000001)); +} + +static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr) +{ + return (addr->s6_addr32[0] == htonl(0xff020000) && + addr->s6_addr32[1] == 0 && + addr->s6_addr32[2] == 0 && + addr->s6_addr32[3] == htonl(0x00000002)); +} + +#endif +#endif diff --git a/include/net/af_unix.h b/include/net/af_unix.h new file mode 100644 index 000000000000..b60b3846b9d1 --- /dev/null +++ b/include/net/af_unix.h @@ -0,0 +1,78 @@ +#ifndef __LINUX_NET_AFUNIX_H +#define __LINUX_NET_AFUNIX_H +extern void unix_inflight(struct file *fp); +extern void unix_notinflight(struct file *fp); +extern void unix_gc(void); + +#define UNIX_HASH_SIZE 256 + +extern struct hlist_head unix_socket_table[UNIX_HASH_SIZE + 1]; +extern rwlock_t unix_table_lock; + +extern atomic_t unix_tot_inflight; + +static inline struct sock *first_unix_socket(int *i) +{ + for (*i = 0; *i <= UNIX_HASH_SIZE; (*i)++) { + if (!hlist_empty(&unix_socket_table[*i])) + return __sk_head(&unix_socket_table[*i]); + } + return NULL; +} + +static inline struct sock *next_unix_socket(int *i, struct sock *s) +{ + struct sock *next = sk_next(s); + /* More in this chain? */ + if (next) + return next; + /* Look for next non-empty chain. */ + for ((*i)++; *i <= UNIX_HASH_SIZE; (*i)++) { + if (!hlist_empty(&unix_socket_table[*i])) + return __sk_head(&unix_socket_table[*i]); + } + return NULL; +} + +#define forall_unix_sockets(i, s) \ + for (s = first_unix_socket(&(i)); s; s = next_unix_socket(&(i),(s))) + +struct unix_address { + atomic_t refcnt; + int len; + unsigned hash; + struct sockaddr_un name[0]; +}; + +struct unix_skb_parms { + struct ucred creds; /* Skb credentials */ + struct scm_fp_list *fp; /* Passed files */ +}; + +#define UNIXCB(skb) (*(struct unix_skb_parms*)&((skb)->cb)) +#define UNIXCREDS(skb) (&UNIXCB((skb)).creds) + +#define unix_state_rlock(s) read_lock(&unix_sk(s)->lock) +#define unix_state_runlock(s) read_unlock(&unix_sk(s)->lock) +#define unix_state_wlock(s) write_lock(&unix_sk(s)->lock) +#define unix_state_wunlock(s) write_unlock(&unix_sk(s)->lock) + +#ifdef __KERNEL__ +/* The AF_UNIX socket */ +struct unix_sock { + /* WARNING: sk has to be the first member */ + struct sock sk; + struct unix_address *addr; + struct dentry *dentry; + struct vfsmount *mnt; + struct semaphore readsem; + struct sock *peer; + struct sock *other; + struct sock *gc_tree; + atomic_t inflight; + rwlock_t lock; + wait_queue_head_t peer_wait; +}; +#define unix_sk(__sk) ((struct unix_sock *)__sk) +#endif +#endif diff --git a/include/net/ah.h b/include/net/ah.h new file mode 100644 index 000000000000..ceff00afae09 --- /dev/null +++ b/include/net/ah.h @@ -0,0 +1,35 @@ +#ifndef _NET_AH_H +#define _NET_AH_H + +#include <net/xfrm.h> + +/* This is the maximum truncated ICV length that we know of. */ +#define MAX_AH_AUTH_LEN 12 + +struct ah_data +{ + u8 *key; + int key_len; + u8 *work_icv; + int icv_full_len; + int icv_trunc_len; + + void (*icv)(struct ah_data*, + struct sk_buff *skb, u8 *icv); + + struct crypto_tfm *tfm; +}; + +static inline void +ah_hmac_digest(struct ah_data *ahp, struct sk_buff *skb, u8 *auth_data) +{ + struct crypto_tfm *tfm = ahp->tfm; + + memset(auth_data, 0, ahp->icv_trunc_len); + crypto_hmac_init(tfm, ahp->key, &ahp->key_len); + skb_icv_walk(skb, tfm, 0, skb->len, crypto_hmac_update); + crypto_hmac_final(tfm, ahp->key, &ahp->key_len, ahp->work_icv); + memcpy(auth_data, ahp->work_icv, ahp->icv_trunc_len); +} + +#endif diff --git a/include/net/arp.h b/include/net/arp.h new file mode 100644 index 000000000000..a1f09fad6a52 --- /dev/null +++ b/include/net/arp.h @@ -0,0 +1,32 @@ +/* linux/net/inet/arp.h */ +#ifndef _ARP_H +#define _ARP_H + +#include <linux/if_arp.h> +#include <net/neighbour.h> + +#define HAVE_ARP_CREATE + +extern struct neigh_table arp_tbl; + +extern void arp_init(void); +extern int arp_rcv(struct sk_buff *skb, struct net_device *dev, + struct packet_type *pt); +extern int arp_find(unsigned char *haddr, struct sk_buff *skb); +extern int arp_ioctl(unsigned int cmd, void __user *arg); +extern void arp_send(int type, int ptype, u32 dest_ip, + struct net_device *dev, u32 src_ip, + unsigned char *dest_hw, unsigned char *src_hw, unsigned char *th); +extern int arp_bind_neighbour(struct dst_entry *dst); +extern int arp_mc_map(u32 addr, u8 *haddr, struct net_device *dev, int dir); +extern void arp_ifdown(struct net_device *dev); + +extern struct sk_buff *arp_create(int type, int ptype, u32 dest_ip, + struct net_device *dev, u32 src_ip, + unsigned char *dest_hw, unsigned char *src_hw, + unsigned char *target_hw); +extern void arp_xmit(struct sk_buff *skb); + +extern struct neigh_ops arp_broken_ops; + +#endif /* _ARP_H */ diff --git a/include/net/atmclip.h b/include/net/atmclip.h new file mode 100644 index 000000000000..47048b1d179a --- /dev/null +++ b/include/net/atmclip.h @@ -0,0 +1,62 @@ +/* net/atm/atmarp.h - RFC1577 ATM ARP */ + +/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */ + + +#ifndef _ATMCLIP_H +#define _ATMCLIP_H + +#include <linux/netdevice.h> +#include <linux/skbuff.h> +#include <linux/atm.h> +#include <linux/atmdev.h> +#include <linux/atmarp.h> +#include <linux/spinlock.h> +#include <net/neighbour.h> + + +#define CLIP_VCC(vcc) ((struct clip_vcc *) ((vcc)->user_back)) +#define NEIGH2ENTRY(neigh) ((struct atmarp_entry *) (neigh)->primary_key) + + +struct clip_vcc { + struct atm_vcc *vcc; /* VCC descriptor */ + struct atmarp_entry *entry; /* ATMARP table entry, NULL if IP addr. + isn't known yet */ + int xoff; /* 1 if send buffer is full */ + unsigned char encap; /* 0: NULL, 1: LLC/SNAP */ + unsigned long last_use; /* last send or receive operation */ + unsigned long idle_timeout; /* keep open idle for so many jiffies*/ + void (*old_push)(struct atm_vcc *vcc,struct sk_buff *skb); + /* keep old push fn for chaining */ + void (*old_pop)(struct atm_vcc *vcc,struct sk_buff *skb); + /* keep old pop fn for chaining */ + struct clip_vcc *next; /* next VCC */ +}; + + +struct atmarp_entry { + u32 ip; /* IP address */ + struct clip_vcc *vccs; /* active VCCs; NULL if resolution is + pending */ + unsigned long expires; /* entry expiration time */ + struct neighbour *neigh; /* neighbour back-pointer */ +}; + + +#define PRIV(dev) ((struct clip_priv *) netdev_priv(dev)) + + +struct clip_priv { + int number; /* for convenience ... */ + spinlock_t xoff_lock; /* ensures that pop is atomic (SMP) */ + struct net_device_stats stats; + struct net_device *next; /* next CLIP interface */ +}; + + +#ifdef __KERNEL__ +extern struct neigh_table *clip_tbl_hook; +#endif + +#endif diff --git a/include/net/ax25.h b/include/net/ax25.h new file mode 100644 index 000000000000..fb95ecb6fe03 --- /dev/null +++ b/include/net/ax25.h @@ -0,0 +1,385 @@ +/* + * Declarations of AX.25 type objects. + * + * Alan Cox (GW4PTS) 10/11/93 + */ +#ifndef _AX25_H +#define _AX25_H + +#include <linux/config.h> +#include <linux/ax25.h> +#include <linux/spinlock.h> +#include <linux/timer.h> +#include <linux/list.h> +#include <asm/atomic.h> + +#define AX25_T1CLAMPLO 1 +#define AX25_T1CLAMPHI (30 * HZ) + +#define AX25_BPQ_HEADER_LEN 16 +#define AX25_KISS_HEADER_LEN 1 + +#define AX25_HEADER_LEN 17 +#define AX25_ADDR_LEN 7 +#define AX25_DIGI_HEADER_LEN (AX25_MAX_DIGIS * AX25_ADDR_LEN) +#define AX25_MAX_HEADER_LEN (AX25_HEADER_LEN + AX25_DIGI_HEADER_LEN) + +/* AX.25 Protocol IDs */ +#define AX25_P_ROSE 0x01 +#define AX25_P_IP 0xCC +#define AX25_P_ARP 0xCD +#define AX25_P_TEXT 0xF0 +#define AX25_P_NETROM 0xCF +#define AX25_P_SEGMENT 0x08 + +/* AX.25 Segment control values */ +#define AX25_SEG_REM 0x7F +#define AX25_SEG_FIRST 0x80 + +#define AX25_CBIT 0x80 /* Command/Response bit */ +#define AX25_EBIT 0x01 /* HDLC Address Extension bit */ +#define AX25_HBIT 0x80 /* Has been repeated bit */ + +#define AX25_SSSID_SPARE 0x60 /* Unused bits in SSID for standard AX.25 */ +#define AX25_ESSID_SPARE 0x20 /* Unused bits in SSID for extended AX.25 */ +#define AX25_DAMA_FLAG 0x20 /* Well, it is *NOT* unused! (dl1bke 951121 */ + +#define AX25_COND_ACK_PENDING 0x01 +#define AX25_COND_REJECT 0x02 +#define AX25_COND_PEER_RX_BUSY 0x04 +#define AX25_COND_OWN_RX_BUSY 0x08 +#define AX25_COND_DAMA_MODE 0x10 + +#ifndef _LINUX_NETDEVICE_H +#include <linux/netdevice.h> +#endif + +/* Upper sub-layer (LAPB) definitions */ + +/* Control field templates */ +#define AX25_I 0x00 /* Information frames */ +#define AX25_S 0x01 /* Supervisory frames */ +#define AX25_RR 0x01 /* Receiver ready */ +#define AX25_RNR 0x05 /* Receiver not ready */ +#define AX25_REJ 0x09 /* Reject */ +#define AX25_U 0x03 /* Unnumbered frames */ +#define AX25_SABM 0x2f /* Set Asynchronous Balanced Mode */ +#define AX25_SABME 0x6f /* Set Asynchronous Balanced Mode Extended */ +#define AX25_DISC 0x43 /* Disconnect */ +#define AX25_DM 0x0f /* Disconnected mode */ +#define AX25_UA 0x63 /* Unnumbered acknowledge */ +#define AX25_FRMR 0x87 /* Frame reject */ +#define AX25_UI 0x03 /* Unnumbered information */ +#define AX25_XID 0xaf /* Exchange information */ +#define AX25_TEST 0xe3 /* Test */ + +#define AX25_PF 0x10 /* Poll/final bit for standard AX.25 */ +#define AX25_EPF 0x01 /* Poll/final bit for extended AX.25 */ + +#define AX25_ILLEGAL 0x100 /* Impossible to be a real frame type */ + +#define AX25_POLLOFF 0 +#define AX25_POLLON 1 + +/* AX25 L2 C-bit */ +#define AX25_COMMAND 1 +#define AX25_RESPONSE 2 + +/* Define Link State constants. */ + +enum { + AX25_STATE_0, + AX25_STATE_1, + AX25_STATE_2, + AX25_STATE_3, + AX25_STATE_4 +}; + +#define AX25_MODULUS 8 /* Standard AX.25 modulus */ +#define AX25_EMODULUS 128 /* Extended AX.25 modulus */ + +enum { + AX25_PROTO_STD_SIMPLEX, + AX25_PROTO_STD_DUPLEX, + AX25_PROTO_DAMA_SLAVE, + AX25_PROTO_DAMA_MASTER +}; + +enum { + AX25_VALUES_IPDEFMODE, /* 0=DG 1=VC */ + AX25_VALUES_AXDEFMODE, /* 0=Normal 1=Extended Seq Nos */ + AX25_VALUES_BACKOFF, /* 0=None 1=Linear 2=Exponential */ + AX25_VALUES_CONMODE, /* Allow connected modes - 0=No 1=no "PID text" 2=all PIDs */ + AX25_VALUES_WINDOW, /* Default window size for standard AX.25 */ + AX25_VALUES_EWINDOW, /* Default window size for extended AX.25 */ + AX25_VALUES_T1, /* Default T1 timeout value */ + AX25_VALUES_T2, /* Default T2 timeout value */ + AX25_VALUES_T3, /* Default T3 timeout value */ + AX25_VALUES_IDLE, /* Connected mode idle timer */ + AX25_VALUES_N2, /* Default N2 value */ + AX25_VALUES_PACLEN, /* AX.25 MTU */ + AX25_VALUES_PROTOCOL, /* Std AX.25, DAMA Slave, DAMA Master */ + AX25_VALUES_DS_TIMEOUT, /* DAMA Slave timeout */ + AX25_MAX_VALUES /* THIS MUST REMAIN THE LAST ENTRY OF THIS LIST */ +}; + +#define AX25_DEF_IPDEFMODE 0 /* Datagram */ +#define AX25_DEF_AXDEFMODE 0 /* Normal */ +#define AX25_DEF_BACKOFF 1 /* Linear backoff */ +#define AX25_DEF_CONMODE 2 /* Connected mode allowed */ +#define AX25_DEF_WINDOW 2 /* Window=2 */ +#define AX25_DEF_EWINDOW 32 /* Module-128 Window=32 */ +#define AX25_DEF_T1 (10 * HZ) /* T1=10s */ +#define AX25_DEF_T2 (3 * HZ) /* T2=3s */ +#define AX25_DEF_T3 (300 * HZ) /* T3=300s */ +#define AX25_DEF_N2 10 /* N2=10 */ +#define AX25_DEF_IDLE (0 * 60 * HZ) /* Idle=None */ +#define AX25_DEF_PACLEN 256 /* Paclen=256 */ +#define AX25_DEF_PROTOCOL AX25_PROTO_STD_SIMPLEX /* Standard AX.25 */ +#define AX25_DEF_DS_TIMEOUT (3 * 60 * HZ) /* DAMA timeout 3 minutes */ + +typedef struct ax25_uid_assoc { + struct ax25_uid_assoc *next; + uid_t uid; + ax25_address call; +} ax25_uid_assoc; + +typedef struct { + ax25_address calls[AX25_MAX_DIGIS]; + unsigned char repeated[AX25_MAX_DIGIS]; + unsigned char ndigi; + char lastrepeat; +} ax25_digi; + +typedef struct ax25_route { + struct ax25_route *next; + atomic_t ref; + ax25_address callsign; + struct net_device *dev; + ax25_digi *digipeat; + char ip_mode; + struct timer_list timer; +} ax25_route; + +typedef struct { + char slave; /* slave_mode? */ + struct timer_list slave_timer; /* timeout timer */ + unsigned short slave_timeout; /* when? */ +} ax25_dama_info; + +struct ctl_table; + +typedef struct ax25_dev { + struct ax25_dev *next; + struct net_device *dev; + struct net_device *forward; + struct ctl_table *systable; + int values[AX25_MAX_VALUES]; +#if defined(CONFIG_AX25_DAMA_SLAVE) || defined(CONFIG_AX25_DAMA_MASTER) + ax25_dama_info dama; +#endif +} ax25_dev; + +typedef struct ax25_cb { + struct hlist_node ax25_node; + ax25_address source_addr, dest_addr; + ax25_digi *digipeat; + ax25_dev *ax25_dev; + unsigned char iamdigi; + unsigned char state, modulus, pidincl; + unsigned short vs, vr, va; + unsigned char condition, backoff; + unsigned char n2, n2count; + struct timer_list t1timer, t2timer, t3timer, idletimer; + unsigned long t1, t2, t3, idle, rtt; + unsigned short paclen, fragno, fraglen; + struct sk_buff_head write_queue; + struct sk_buff_head reseq_queue; + struct sk_buff_head ack_queue; + struct sk_buff_head frag_queue; + unsigned char window; + struct timer_list timer, dtimer; + struct sock *sk; /* Backlink to socket */ + atomic_t refcount; +} ax25_cb; + +#define ax25_sk(__sk) ((ax25_cb *)(__sk)->sk_protinfo) + +#define ax25_for_each(__ax25, node, list) \ + hlist_for_each_entry(__ax25, node, list, ax25_node) + +#define ax25_cb_hold(__ax25) \ + atomic_inc(&((__ax25)->refcount)) + +static __inline__ void ax25_cb_put(ax25_cb *ax25) +{ + if (atomic_dec_and_test(&ax25->refcount)) { + if (ax25->digipeat) + kfree(ax25->digipeat); + kfree(ax25); + } +} + +/* af_ax25.c */ +extern struct hlist_head ax25_list; +extern spinlock_t ax25_list_lock; +extern void ax25_cb_add(ax25_cb *); +struct sock *ax25_find_listener(ax25_address *, int, struct net_device *, int); +struct sock *ax25_get_socket(ax25_address *, ax25_address *, int); +extern ax25_cb *ax25_find_cb(ax25_address *, ax25_address *, ax25_digi *, struct net_device *); +extern void ax25_send_to_raw(ax25_address *, struct sk_buff *, int); +extern void ax25_destroy_socket(ax25_cb *); +extern ax25_cb *ax25_create_cb(void); +extern void ax25_fillin_cb(ax25_cb *, ax25_dev *); +extern struct sock *ax25_make_new(struct sock *, struct ax25_dev *); + +/* ax25_addr.c */ +extern ax25_address null_ax25_address; +extern char *ax2asc(ax25_address *); +extern ax25_address *asc2ax(char *); +extern int ax25cmp(ax25_address *, ax25_address *); +extern int ax25digicmp(ax25_digi *, ax25_digi *); +extern unsigned char *ax25_addr_parse(unsigned char *, int, ax25_address *, ax25_address *, ax25_digi *, int *, int *); +extern int ax25_addr_build(unsigned char *, ax25_address *, ax25_address *, ax25_digi *, int, int); +extern int ax25_addr_size(ax25_digi *); +extern void ax25_digi_invert(ax25_digi *, ax25_digi *); + +/* ax25_dev.c */ +extern ax25_dev *ax25_dev_list; +extern spinlock_t ax25_dev_lock; + +static inline ax25_dev *ax25_dev_ax25dev(struct net_device *dev) +{ + return dev->ax25_ptr; +} + +extern ax25_dev *ax25_addr_ax25dev(ax25_address *); +extern void ax25_dev_device_up(struct net_device *); +extern void ax25_dev_device_down(struct net_device *); +extern int ax25_fwd_ioctl(unsigned int, struct ax25_fwd_struct *); +extern struct net_device *ax25_fwd_dev(struct net_device *); +extern void ax25_dev_free(void); + +/* ax25_ds_in.c */ +extern int ax25_ds_frame_in(ax25_cb *, struct sk_buff *, int); + +/* ax25_ds_subr.c */ +extern void ax25_ds_nr_error_recovery(ax25_cb *); +extern void ax25_ds_enquiry_response(ax25_cb *); +extern void ax25_ds_establish_data_link(ax25_cb *); +extern void ax25_dev_dama_off(ax25_dev *); +extern void ax25_dama_on(ax25_cb *); +extern void ax25_dama_off(ax25_cb *); + +/* ax25_ds_timer.c */ +extern void ax25_ds_set_timer(ax25_dev *); +extern void ax25_ds_del_timer(ax25_dev *); +extern void ax25_ds_timer(ax25_cb *); +extern void ax25_ds_t1_timeout(ax25_cb *); +extern void ax25_ds_heartbeat_expiry(ax25_cb *); +extern void ax25_ds_t3timer_expiry(ax25_cb *); +extern void ax25_ds_idletimer_expiry(ax25_cb *); + +/* ax25_iface.c */ +extern int ax25_protocol_register(unsigned int, int (*)(struct sk_buff *, ax25_cb *)); +extern void ax25_protocol_release(unsigned int); +extern int ax25_linkfail_register(void (*)(ax25_cb *, int)); +extern void ax25_linkfail_release(void (*)(ax25_cb *, int)); +extern int ax25_listen_register(ax25_address *, struct net_device *); +extern void ax25_listen_release(ax25_address *, struct net_device *); +extern int (*ax25_protocol_function(unsigned int))(struct sk_buff *, ax25_cb *); +extern int ax25_listen_mine(ax25_address *, struct net_device *); +extern void ax25_link_failed(ax25_cb *, int); +extern int ax25_protocol_is_registered(unsigned int); + +/* ax25_in.c */ +extern int ax25_rx_iframe(ax25_cb *, struct sk_buff *); +extern int ax25_kiss_rcv(struct sk_buff *, struct net_device *, struct packet_type *); + +/* ax25_ip.c */ +extern int ax25_encapsulate(struct sk_buff *, struct net_device *, unsigned short, void *, void *, unsigned int); +extern int ax25_rebuild_header(struct sk_buff *); + +/* ax25_out.c */ +extern ax25_cb *ax25_send_frame(struct sk_buff *, int, ax25_address *, ax25_address *, ax25_digi *, struct net_device *); +extern void ax25_output(ax25_cb *, int, struct sk_buff *); +extern void ax25_kick(ax25_cb *); +extern void ax25_transmit_buffer(ax25_cb *, struct sk_buff *, int); +extern void ax25_queue_xmit(struct sk_buff *); +extern int ax25_check_iframes_acked(ax25_cb *, unsigned short); + +/* ax25_route.c */ +extern void ax25_rt_device_down(struct net_device *); +extern int ax25_rt_ioctl(unsigned int, void __user *); +extern struct file_operations ax25_route_fops; +extern int ax25_rt_autobind(ax25_cb *, ax25_address *); +extern ax25_route *ax25_rt_find_route(ax25_route *, ax25_address *, + struct net_device *); +extern struct sk_buff *ax25_rt_build_path(struct sk_buff *, ax25_address *, ax25_address *, ax25_digi *); +extern void ax25_rt_free(void); + +static inline void ax25_put_route(ax25_route *ax25_rt) +{ + atomic_dec(&ax25_rt->ref); +} + +/* ax25_std_in.c */ +extern int ax25_std_frame_in(ax25_cb *, struct sk_buff *, int); + +/* ax25_std_subr.c */ +extern void ax25_std_nr_error_recovery(ax25_cb *); +extern void ax25_std_establish_data_link(ax25_cb *); +extern void ax25_std_transmit_enquiry(ax25_cb *); +extern void ax25_std_enquiry_response(ax25_cb *); +extern void ax25_std_timeout_response(ax25_cb *); + +/* ax25_std_timer.c */ +extern void ax25_std_heartbeat_expiry(ax25_cb *); +extern void ax25_std_t1timer_expiry(ax25_cb *); +extern void ax25_std_t2timer_expiry(ax25_cb *); +extern void ax25_std_t3timer_expiry(ax25_cb *); +extern void ax25_std_idletimer_expiry(ax25_cb *); + +/* ax25_subr.c */ +extern void ax25_clear_queues(ax25_cb *); +extern void ax25_frames_acked(ax25_cb *, unsigned short); +extern void ax25_requeue_frames(ax25_cb *); +extern int ax25_validate_nr(ax25_cb *, unsigned short); +extern int ax25_decode(ax25_cb *, struct sk_buff *, int *, int *, int *); +extern void ax25_send_control(ax25_cb *, int, int, int); +extern void ax25_return_dm(struct net_device *, ax25_address *, ax25_address *, ax25_digi *); +extern void ax25_calculate_t1(ax25_cb *); +extern void ax25_calculate_rtt(ax25_cb *); +extern void ax25_disconnect(ax25_cb *, int); + +/* ax25_timer.c */ +extern void ax25_start_heartbeat(ax25_cb *); +extern void ax25_start_t1timer(ax25_cb *); +extern void ax25_start_t2timer(ax25_cb *); +extern void ax25_start_t3timer(ax25_cb *); +extern void ax25_start_idletimer(ax25_cb *); +extern void ax25_stop_heartbeat(ax25_cb *); +extern void ax25_stop_t1timer(ax25_cb *); +extern void ax25_stop_t2timer(ax25_cb *); +extern void ax25_stop_t3timer(ax25_cb *); +extern void ax25_stop_idletimer(ax25_cb *); +extern int ax25_t1timer_running(ax25_cb *); +extern unsigned long ax25_display_timer(struct timer_list *); + +/* ax25_uid.c */ +extern int ax25_uid_policy; +extern ax25_address *ax25_findbyuid(uid_t); +extern int ax25_uid_ioctl(int, struct sockaddr_ax25 *); +extern struct file_operations ax25_uid_fops; +extern void ax25_uid_free(void); + +/* sysctl_net_ax25.c */ +#ifdef CONFIG_SYSCTL +extern void ax25_register_sysctl(void); +extern void ax25_unregister_sysctl(void); +#else +static inline void ax25_register_sysctl(void) {}; +static inline void ax25_unregister_sysctl(void) {}; +#endif /* CONFIG_SYSCTL */ + +#endif diff --git a/include/net/bluetooth/bluetooth.h b/include/net/bluetooth/bluetooth.h new file mode 100644 index 000000000000..42a84c53678b --- /dev/null +++ b/include/net/bluetooth/bluetooth.h @@ -0,0 +1,181 @@ +/* + BlueZ - Bluetooth protocol stack for Linux + Copyright (C) 2000-2001 Qualcomm Incorporated + + Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License version 2 as + published by the Free Software Foundation; + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. + IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY + CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + + ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, + COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS + SOFTWARE IS DISCLAIMED. +*/ + +#ifndef __BLUETOOTH_H +#define __BLUETOOTH_H + +#include <asm/types.h> +#include <asm/byteorder.h> +#include <linux/list.h> +#include <linux/poll.h> +#include <net/sock.h> + +#ifndef AF_BLUETOOTH +#define AF_BLUETOOTH 31 +#define PF_BLUETOOTH AF_BLUETOOTH +#endif + +/* Reserv for core and drivers use */ +#define BT_SKB_RESERVE 8 + +#define BTPROTO_L2CAP 0 +#define BTPROTO_HCI 1 +#define BTPROTO_SCO 2 +#define BTPROTO_RFCOMM 3 +#define BTPROTO_BNEP 4 +#define BTPROTO_CMTP 5 +#define BTPROTO_HIDP 6 +#define BTPROTO_AVDTP 7 + +#define SOL_HCI 0 +#define SOL_L2CAP 6 +#define SOL_SCO 17 +#define SOL_RFCOMM 18 + +#define BT_INFO(fmt, arg...) printk(KERN_INFO "Bluetooth: " fmt "\n" , ## arg) +#define BT_DBG(fmt, arg...) printk(KERN_INFO "%s: " fmt "\n" , __FUNCTION__ , ## arg) +#define BT_ERR(fmt, arg...) printk(KERN_ERR "%s: " fmt "\n" , __FUNCTION__ , ## arg) + +#ifdef HCI_DATA_DUMP +#define BT_DMP(buf, len) bt_dump(__FUNCTION__, buf, len) +#else +#define BT_DMP(D...) +#endif + +extern struct proc_dir_entry *proc_bt; + +/* Connection and socket states */ +enum { + BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */ + BT_OPEN, + BT_BOUND, + BT_LISTEN, + BT_CONNECT, + BT_CONNECT2, + BT_CONFIG, + BT_DISCONN, + BT_CLOSED +}; + +/* Endianness conversions */ +#define htobs(a) __cpu_to_le16(a) +#define htobl(a) __cpu_to_le32(a) +#define btohs(a) __le16_to_cpu(a) +#define btohl(a) __le32_to_cpu(a) + +/* BD Address */ +typedef struct { + __u8 b[6]; +} __attribute__((packed)) bdaddr_t; + +#define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}}) +#define BDADDR_LOCAL (&(bdaddr_t) {{0, 0, 0, 0xff, 0xff, 0xff}}) + +/* Copy, swap, convert BD Address */ +static inline int bacmp(bdaddr_t *ba1, bdaddr_t *ba2) +{ + return memcmp(ba1, ba2, sizeof(bdaddr_t)); +} +static inline void bacpy(bdaddr_t *dst, bdaddr_t *src) +{ + memcpy(dst, src, sizeof(bdaddr_t)); +} + +void baswap(bdaddr_t *dst, bdaddr_t *src); +char *batostr(bdaddr_t *ba); +bdaddr_t *strtoba(char *str); + +/* Common socket structures and functions */ + +#define bt_sk(__sk) ((struct bt_sock *) __sk) + +struct bt_sock { + struct sock sk; + bdaddr_t src; + bdaddr_t dst; + struct list_head accept_q; + struct sock *parent; +}; + +struct bt_sock_list { + struct hlist_head head; + rwlock_t lock; +}; + +int bt_sock_register(int proto, struct net_proto_family *ops); +int bt_sock_unregister(int proto); +void bt_sock_link(struct bt_sock_list *l, struct sock *s); +void bt_sock_unlink(struct bt_sock_list *l, struct sock *s); +int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len, int flags); +uint bt_sock_poll(struct file * file, struct socket *sock, poll_table *wait); +int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo); + +void bt_accept_enqueue(struct sock *parent, struct sock *sk); +void bt_accept_unlink(struct sock *sk); +struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock); + +/* Skb helpers */ +struct bt_skb_cb { + int incoming; +}; +#define bt_cb(skb) ((struct bt_skb_cb *)(skb->cb)) + +static inline struct sk_buff *bt_skb_alloc(unsigned int len, int how) +{ + struct sk_buff *skb; + + if ((skb = alloc_skb(len + BT_SKB_RESERVE, how))) { + skb_reserve(skb, BT_SKB_RESERVE); + bt_cb(skb)->incoming = 0; + } + return skb; +} + +static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk, unsigned long len, + int nb, int *err) +{ + struct sk_buff *skb; + + if ((skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err))) { + skb_reserve(skb, BT_SKB_RESERVE); + bt_cb(skb)->incoming = 0; + } + + return skb; +} + +static inline int skb_frags_no(struct sk_buff *skb) +{ + register struct sk_buff *frag = skb_shinfo(skb)->frag_list; + register int n = 1; + + for (; frag; frag=frag->next, n++); + return n; +} + +void bt_dump(char *pref, __u8 *buf, int count); + +int bt_err(__u16 code); + +#endif /* __BLUETOOTH_H */ diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h new file mode 100644 index 000000000000..6f0706f4af68 --- /dev/null +++ b/include/net/bluetooth/hci.h @@ -0,0 +1,755 @@ +/* + BlueZ - Bluetooth protocol stack for Linux + Copyright (C) 2000-2001 Qualcomm Incorporated + + Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License version 2 as + published by the Free Software Foundation; + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. + IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY + CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + + ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, + COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS + SOFTWARE IS DISCLAIMED. +*/ + +#ifndef __HCI_H +#define __HCI_H + +#define HCI_MAX_ACL_SIZE 1024 +#define HCI_MAX_SCO_SIZE 255 +#define HCI_MAX_EVENT_SIZE 260 +#define HCI_MAX_FRAME_SIZE (HCI_MAX_ACL_SIZE + 4) + +/* HCI dev events */ +#define HCI_DEV_REG 1 +#define HCI_DEV_UNREG 2 +#define HCI_DEV_UP 3 +#define HCI_DEV_DOWN 4 +#define HCI_DEV_SUSPEND 5 +#define HCI_DEV_RESUME 6 + +/* HCI notify events */ +#define HCI_NOTIFY_CONN_ADD 1 +#define HCI_NOTIFY_CONN_DEL 2 +#define HCI_NOTIFY_VOICE_SETTING 3 + +/* HCI device types */ +#define HCI_VHCI 0 +#define HCI_USB 1 +#define HCI_PCCARD 2 +#define HCI_UART 3 +#define HCI_RS232 4 +#define HCI_PCI 5 + +/* HCI device quirks */ +enum { + HCI_QUIRK_RESET_ON_INIT, + HCI_QUIRK_RAW_DEVICE +}; + +/* HCI device flags */ +enum { + HCI_UP, + HCI_INIT, + HCI_RUNNING, + + HCI_PSCAN, + HCI_ISCAN, + HCI_AUTH, + HCI_ENCRYPT, + HCI_INQUIRY, + + HCI_RAW, + + HCI_SECMGR +}; + +/* HCI ioctl defines */ +#define HCIDEVUP _IOW('H', 201, int) +#define HCIDEVDOWN _IOW('H', 202, int) +#define HCIDEVRESET _IOW('H', 203, int) +#define HCIDEVRESTAT _IOW('H', 204, int) + +#define HCIGETDEVLIST _IOR('H', 210, int) +#define HCIGETDEVINFO _IOR('H', 211, int) +#define HCIGETCONNLIST _IOR('H', 212, int) +#define HCIGETCONNINFO _IOR('H', 213, int) + +#define HCISETRAW _IOW('H', 220, int) +#define HCISETSCAN _IOW('H', 221, int) +#define HCISETAUTH _IOW('H', 222, int) +#define HCISETENCRYPT _IOW('H', 223, int) +#define HCISETPTYPE _IOW('H', 224, int) +#define HCISETLINKPOL _IOW('H', 225, int) +#define HCISETLINKMODE _IOW('H', 226, int) +#define HCISETACLMTU _IOW('H', 227, int) +#define HCISETSCOMTU _IOW('H', 228, int) + +#define HCISETSECMGR _IOW('H', 230, int) + +#define HCIINQUIRY _IOR('H', 240, int) + +/* HCI timeouts */ +#define HCI_CONN_TIMEOUT (HZ * 40) +#define HCI_DISCONN_TIMEOUT (HZ * 2) +#define HCI_CONN_IDLE_TIMEOUT (HZ * 60) + +/* HCI Packet types */ +#define HCI_COMMAND_PKT 0x01 +#define HCI_ACLDATA_PKT 0x02 +#define HCI_SCODATA_PKT 0x03 +#define HCI_EVENT_PKT 0x04 +#define HCI_VENDOR_PKT 0xff + +/* HCI Packet types */ +#define HCI_DM1 0x0008 +#define HCI_DM3 0x0400 +#define HCI_DM5 0x4000 +#define HCI_DH1 0x0010 +#define HCI_DH3 0x0800 +#define HCI_DH5 0x8000 + +#define HCI_HV1 0x0020 +#define HCI_HV2 0x0040 +#define HCI_HV3 0x0080 + +#define SCO_PTYPE_MASK (HCI_HV1 | HCI_HV2 | HCI_HV3) +#define ACL_PTYPE_MASK (~SCO_PTYPE_MASK) + +/* ACL flags */ +#define ACL_CONT 0x01 +#define ACL_START 0x02 +#define ACL_ACTIVE_BCAST 0x04 +#define ACL_PICO_BCAST 0x08 + +/* Baseband links */ +#define SCO_LINK 0x00 +#define ACL_LINK 0x01 + +/* LMP features */ +#define LMP_3SLOT 0x01 +#define LMP_5SLOT 0x02 +#define LMP_ENCRYPT 0x04 +#define LMP_SOFFSET 0x08 +#define LMP_TACCURACY 0x10 +#define LMP_RSWITCH 0x20 +#define LMP_HOLD 0x40 +#define LMP_SNIF 0x80 + +#define LMP_PARK 0x01 +#define LMP_RSSI 0x02 +#define LMP_QUALITY 0x04 +#define LMP_SCO 0x08 +#define LMP_HV2 0x10 +#define LMP_HV3 0x20 +#define LMP_ULAW 0x40 +#define LMP_ALAW 0x80 + +#define LMP_CVSD 0x01 +#define LMP_PSCHEME 0x02 +#define LMP_PCONTROL 0x04 + +/* Link policies */ +#define HCI_LP_RSWITCH 0x0001 +#define HCI_LP_HOLD 0x0002 +#define HCI_LP_SNIFF 0x0004 +#define HCI_LP_PARK 0x0008 + +/* Link mode */ +#define HCI_LM_ACCEPT 0x8000 +#define HCI_LM_MASTER 0x0001 +#define HCI_LM_AUTH 0x0002 +#define HCI_LM_ENCRYPT 0x0004 +#define HCI_LM_TRUSTED 0x0008 +#define HCI_LM_RELIABLE 0x0010 +#define HCI_LM_SECURE 0x0020 + +/* ----- HCI Commands ---- */ +/* OGF & OCF values */ + +/* Informational Parameters */ +#define OGF_INFO_PARAM 0x04 + +#define OCF_READ_LOCAL_VERSION 0x0001 +struct hci_rp_read_loc_version { + __u8 status; + __u8 hci_ver; + __u16 hci_rev; + __u8 lmp_ver; + __u16 manufacturer; + __u16 lmp_subver; +} __attribute__ ((packed)); + +#define OCF_READ_LOCAL_FEATURES 0x0003 +struct hci_rp_read_loc_features { + __u8 status; + __u8 features[8]; +} __attribute__ ((packed)); + +#define OCF_READ_BUFFER_SIZE 0x0005 +struct hci_rp_read_buffer_size { + __u8 status; + __u16 acl_mtu; + __u8 sco_mtu; + __u16 acl_max_pkt; + __u16 sco_max_pkt; +} __attribute__ ((packed)); + +#define OCF_READ_BD_ADDR 0x0009 +struct hci_rp_read_bd_addr { + __u8 status; + bdaddr_t bdaddr; +} __attribute__ ((packed)); + +/* Host Controller and Baseband */ +#define OGF_HOST_CTL 0x03 +#define OCF_RESET 0x0003 +#define OCF_READ_AUTH_ENABLE 0x001F +#define OCF_WRITE_AUTH_ENABLE 0x0020 + #define AUTH_DISABLED 0x00 + #define AUTH_ENABLED 0x01 + +#define OCF_READ_ENCRYPT_MODE 0x0021 +#define OCF_WRITE_ENCRYPT_MODE 0x0022 + #define ENCRYPT_DISABLED 0x00 + #define ENCRYPT_P2P 0x01 + #define ENCRYPT_BOTH 0x02 + +#define OCF_WRITE_CA_TIMEOUT 0x0016 +#define OCF_WRITE_PG_TIMEOUT 0x0018 + +#define OCF_WRITE_SCAN_ENABLE 0x001A + #define SCAN_DISABLED 0x00 + #define SCAN_INQUIRY 0x01 + #define SCAN_PAGE 0x02 + +#define OCF_SET_EVENT_FLT 0x0005 +struct hci_cp_set_event_flt { + __u8 flt_type; + __u8 cond_type; + __u8 condition[0]; +} __attribute__ ((packed)); + +/* Filter types */ +#define HCI_FLT_CLEAR_ALL 0x00 +#define HCI_FLT_INQ_RESULT 0x01 +#define HCI_FLT_CONN_SETUP 0x02 + +/* CONN_SETUP Condition types */ +#define HCI_CONN_SETUP_ALLOW_ALL 0x00 +#define HCI_CONN_SETUP_ALLOW_CLASS 0x01 +#define HCI_CONN_SETUP_ALLOW_BDADDR 0x02 + +/* CONN_SETUP Conditions */ +#define HCI_CONN_SETUP_AUTO_OFF 0x01 +#define HCI_CONN_SETUP_AUTO_ON 0x02 + +#define OCF_READ_CLASS_OF_DEV 0x0023 +struct hci_rp_read_dev_class { + __u8 status; + __u8 dev_class[3]; +} __attribute__ ((packed)); + +#define OCF_WRITE_CLASS_OF_DEV 0x0024 +struct hci_cp_write_dev_class { + __u8 dev_class[3]; +} __attribute__ ((packed)); + +#define OCF_READ_VOICE_SETTING 0x0025 +struct hci_rp_read_voice_setting { + __u8 status; + __u16 voice_setting; +} __attribute__ ((packed)); + +#define OCF_WRITE_VOICE_SETTING 0x0026 +struct hci_cp_write_voice_setting { + __u16 voice_setting; +} __attribute__ ((packed)); + +#define OCF_HOST_BUFFER_SIZE 0x0033 +struct hci_cp_host_buffer_size { + __u16 acl_mtu; + __u8 sco_mtu; + __u16 acl_max_pkt; + __u16 sco_max_pkt; +} __attribute__ ((packed)); + +/* Link Control */ +#define OGF_LINK_CTL 0x01 +#define OCF_CREATE_CONN 0x0005 +struct hci_cp_create_conn { + bdaddr_t bdaddr; + __u16 pkt_type; + __u8 pscan_rep_mode; + __u8 pscan_mode; + __u16 clock_offset; + __u8 role_switch; +} __attribute__ ((packed)); + +#define OCF_ACCEPT_CONN_REQ 0x0009 +struct hci_cp_accept_conn_req { + bdaddr_t bdaddr; + __u8 role; +} __attribute__ ((packed)); + +#define OCF_REJECT_CONN_REQ 0x000a +struct hci_cp_reject_conn_req { + bdaddr_t bdaddr; + __u8 reason; +} __attribute__ ((packed)); + +#define OCF_DISCONNECT 0x0006 +struct hci_cp_disconnect { + __u16 handle; + __u8 reason; +} __attribute__ ((packed)); + +#define OCF_ADD_SCO 0x0007 +struct hci_cp_add_sco { + __u16 handle; + __u16 pkt_type; +} __attribute__ ((packed)); + +#define OCF_INQUIRY 0x0001 +struct hci_cp_inquiry { + __u8 lap[3]; + __u8 length; + __u8 num_rsp; +} __attribute__ ((packed)); + +#define OCF_INQUIRY_CANCEL 0x0002 + +#define OCF_LINK_KEY_REPLY 0x000B +struct hci_cp_link_key_reply { + bdaddr_t bdaddr; + __u8 link_key[16]; +} __attribute__ ((packed)); + +#define OCF_LINK_KEY_NEG_REPLY 0x000C +struct hci_cp_link_key_neg_reply { + bdaddr_t bdaddr; +} __attribute__ ((packed)); + +#define OCF_PIN_CODE_REPLY 0x000D +struct hci_cp_pin_code_reply { + bdaddr_t bdaddr; + __u8 pin_len; + __u8 pin_code[16]; +} __attribute__ ((packed)); + +#define OCF_PIN_CODE_NEG_REPLY 0x000E +struct hci_cp_pin_code_neg_reply { + bdaddr_t bdaddr; +} __attribute__ ((packed)); + +#define OCF_CHANGE_CONN_PTYPE 0x000F +struct hci_cp_change_conn_ptype { + __u16 handle; + __u16 pkt_type; +} __attribute__ ((packed)); + +#define OCF_AUTH_REQUESTED 0x0011 +struct hci_cp_auth_requested { + __u16 handle; +} __attribute__ ((packed)); + +#define OCF_SET_CONN_ENCRYPT 0x0013 +struct hci_cp_set_conn_encrypt { + __u16 handle; + __u8 encrypt; +} __attribute__ ((packed)); + +#define OCF_CHANGE_CONN_LINK_KEY 0x0015 +struct hci_cp_change_conn_link_key { + __u16 handle; +} __attribute__ ((packed)); + +#define OCF_READ_REMOTE_FEATURES 0x001B +struct hci_cp_read_rmt_features { + __u16 handle; +} __attribute__ ((packed)); + +#define OCF_READ_REMOTE_VERSION 0x001D +struct hci_cp_read_rmt_version { + __u16 handle; +} __attribute__ ((packed)); + +/* Link Policy */ +#define OGF_LINK_POLICY 0x02 +#define OCF_ROLE_DISCOVERY 0x0009 +struct hci_cp_role_discovery { + __u16 handle; +} __attribute__ ((packed)); +struct hci_rp_role_discovery { + __u8 status; + __u16 handle; + __u8 role; +} __attribute__ ((packed)); + +#define OCF_READ_LINK_POLICY 0x000C +struct hci_cp_read_link_policy { + __u16 handle; +} __attribute__ ((packed)); +struct hci_rp_read_link_policy { + __u8 status; + __u16 handle; + __u16 policy; +} __attribute__ ((packed)); + +#define OCF_SWITCH_ROLE 0x000B +struct hci_cp_switch_role { + bdaddr_t bdaddr; + __u8 role; +} __attribute__ ((packed)); + +#define OCF_WRITE_LINK_POLICY 0x000D +struct hci_cp_write_link_policy { + __u16 handle; + __u16 policy; +} __attribute__ ((packed)); +struct hci_rp_write_link_policy { + __u8 status; + __u16 handle; +} __attribute__ ((packed)); + +/* Status params */ +#define OGF_STATUS_PARAM 0x05 + +/* Testing commands */ +#define OGF_TESTING_CMD 0x3E + +/* Vendor specific commands */ +#define OGF_VENDOR_CMD 0x3F + +/* ---- HCI Events ---- */ +#define HCI_EV_INQUIRY_COMPLETE 0x01 + +#define HCI_EV_INQUIRY_RESULT 0x02 +struct inquiry_info { + bdaddr_t bdaddr; + __u8 pscan_rep_mode; + __u8 pscan_period_mode; + __u8 pscan_mode; + __u8 dev_class[3]; + __u16 clock_offset; +} __attribute__ ((packed)); + +#define HCI_EV_INQUIRY_RESULT_WITH_RSSI 0x22 +struct inquiry_info_with_rssi { + bdaddr_t bdaddr; + __u8 pscan_rep_mode; + __u8 pscan_period_mode; + __u8 dev_class[3]; + __u16 clock_offset; + __s8 rssi; +} __attribute__ ((packed)); + +#define HCI_EV_CONN_COMPLETE 0x03 +struct hci_ev_conn_complete { + __u8 status; + __u16 handle; + bdaddr_t bdaddr; + __u8 link_type; + __u8 encr_mode; +} __attribute__ ((packed)); + +#define HCI_EV_CONN_REQUEST 0x04 +struct hci_ev_conn_request { + bdaddr_t bdaddr; + __u8 dev_class[3]; + __u8 link_type; +} __attribute__ ((packed)); + +#define HCI_EV_DISCONN_COMPLETE 0x05 +struct hci_ev_disconn_complete { + __u8 status; + __u16 handle; + __u8 reason; +} __attribute__ ((packed)); + +#define HCI_EV_AUTH_COMPLETE 0x06 +struct hci_ev_auth_complete { + __u8 status; + __u16 handle; +} __attribute__ ((packed)); + +#define HCI_EV_ENCRYPT_CHANGE 0x08 +struct hci_ev_encrypt_change { + __u8 status; + __u16 handle; + __u8 encrypt; +} __attribute__ ((packed)); + +#define HCI_EV_CHANGE_CONN_LINK_KEY_COMPLETE 0x09 +struct hci_ev_change_conn_link_key_complete { + __u8 status; + __u16 handle; +} __attribute__ ((packed)); + +#define HCI_EV_QOS_SETUP_COMPLETE 0x0D +struct hci_qos { + __u8 service_type; + __u32 token_rate; + __u32 peak_bandwidth; + __u32 latency; + __u32 delay_variation; +} __attribute__ ((packed)); +struct hci_ev_qos_setup_complete { + __u8 status; + __u16 handle; + struct hci_qos qos; +} __attribute__ ((packed)); + +#define HCI_EV_CMD_COMPLETE 0x0E +struct hci_ev_cmd_complete { + __u8 ncmd; + __u16 opcode; +} __attribute__ ((packed)); + +#define HCI_EV_CMD_STATUS 0x0F +struct hci_ev_cmd_status { + __u8 status; + __u8 ncmd; + __u16 opcode; +} __attribute__ ((packed)); + +#define HCI_EV_NUM_COMP_PKTS 0x13 +struct hci_ev_num_comp_pkts { + __u8 num_hndl; + /* variable length part */ +} __attribute__ ((packed)); + +#define HCI_EV_ROLE_CHANGE 0x12 +struct hci_ev_role_change { + __u8 status; + bdaddr_t bdaddr; + __u8 role; +} __attribute__ ((packed)); + +#define HCI_EV_MODE_CHANGE 0x14 +struct hci_ev_mode_change { + __u8 status; + __u16 handle; + __u8 mode; + __u16 interval; +} __attribute__ ((packed)); + +#define HCI_EV_PIN_CODE_REQ 0x16 +struct hci_ev_pin_code_req { + bdaddr_t bdaddr; +} __attribute__ ((packed)); + +#define HCI_EV_LINK_KEY_REQ 0x17 +struct hci_ev_link_key_req { + bdaddr_t bdaddr; +} __attribute__ ((packed)); + +#define HCI_EV_LINK_KEY_NOTIFY 0x18 +struct hci_ev_link_key_notify { + bdaddr_t bdaddr; + __u8 link_key[16]; + __u8 key_type; +} __attribute__ ((packed)); + +#define HCI_EV_RMT_FEATURES 0x0B +struct hci_ev_rmt_features { + __u8 status; + __u16 handle; + __u8 features[8]; +} __attribute__ ((packed)); + +#define HCI_EV_RMT_VERSION 0x0C +struct hci_ev_rmt_version { + __u8 status; + __u16 handle; + __u8 lmp_ver; + __u16 manufacturer; + __u16 lmp_subver; +} __attribute__ ((packed)); + +#define HCI_EV_CLOCK_OFFSET 0x01C +struct hci_ev_clock_offset { + __u8 status; + __u16 handle; + __u16 clock_offset; +} __attribute__ ((packed)); + +/* Internal events generated by Bluetooth stack */ +#define HCI_EV_STACK_INTERNAL 0xFD +struct hci_ev_stack_internal { + __u16 type; + __u8 data[0]; +} __attribute__ ((packed)); + +#define HCI_EV_SI_DEVICE 0x01 +struct hci_ev_si_device { + __u16 event; + __u16 dev_id; +} __attribute__ ((packed)); + +#define HCI_EV_SI_SECURITY 0x02 +struct hci_ev_si_security { + __u16 event; + __u16 proto; + __u16 subproto; + __u8 incoming; +} __attribute__ ((packed)); + +/* ---- HCI Packet structures ---- */ +#define HCI_COMMAND_HDR_SIZE 3 +#define HCI_EVENT_HDR_SIZE 2 +#define HCI_ACL_HDR_SIZE 4 +#define HCI_SCO_HDR_SIZE 3 + +struct hci_command_hdr { + __u16 opcode; /* OCF & OGF */ + __u8 plen; +} __attribute__ ((packed)); + +struct hci_event_hdr { + __u8 evt; + __u8 plen; +} __attribute__ ((packed)); + +struct hci_acl_hdr { + __u16 handle; /* Handle & Flags(PB, BC) */ + __u16 dlen; +} __attribute__ ((packed)); + +struct hci_sco_hdr { + __u16 handle; + __u8 dlen; +} __attribute__ ((packed)); + +/* Command opcode pack/unpack */ +#define hci_opcode_pack(ogf, ocf) (__u16)((ocf & 0x03ff)|(ogf << 10)) +#define hci_opcode_ogf(op) (op >> 10) +#define hci_opcode_ocf(op) (op & 0x03ff) + +/* ACL handle and flags pack/unpack */ +#define hci_handle_pack(h, f) (__u16)((h & 0x0fff)|(f << 12)) +#define hci_handle(h) (h & 0x0fff) +#define hci_flags(h) (h >> 12) + +/* ---- HCI Sockets ---- */ + +/* Socket options */ +#define HCI_DATA_DIR 1 +#define HCI_FILTER 2 +#define HCI_TIME_STAMP 3 + +/* CMSG flags */ +#define HCI_CMSG_DIR 0x0001 +#define HCI_CMSG_TSTAMP 0x0002 + +struct sockaddr_hci { + sa_family_t hci_family; + unsigned short hci_dev; +}; +#define HCI_DEV_NONE 0xffff + +struct hci_filter { + unsigned long type_mask; + unsigned long event_mask[2]; + __u16 opcode; +}; + +struct hci_ufilter { + __u32 type_mask; + __u32 event_mask[2]; + __u16 opcode; +}; + +#define HCI_FLT_TYPE_BITS 31 +#define HCI_FLT_EVENT_BITS 63 +#define HCI_FLT_OGF_BITS 63 +#define HCI_FLT_OCF_BITS 127 + +/* ---- HCI Ioctl requests structures ---- */ +struct hci_dev_stats { + __u32 err_rx; + __u32 err_tx; + __u32 cmd_tx; + __u32 evt_rx; + __u32 acl_tx; + __u32 acl_rx; + __u32 sco_tx; + __u32 sco_rx; + __u32 byte_rx; + __u32 byte_tx; +}; + +struct hci_dev_info { + __u16 dev_id; + char name[8]; + + bdaddr_t bdaddr; + + __u32 flags; + __u8 type; + + __u8 features[8]; + + __u32 pkt_type; + __u32 link_policy; + __u32 link_mode; + + __u16 acl_mtu; + __u16 acl_pkts; + __u16 sco_mtu; + __u16 sco_pkts; + + struct hci_dev_stats stat; +}; + +struct hci_conn_info { + __u16 handle; + bdaddr_t bdaddr; + __u8 type; + __u8 out; + __u16 state; + __u32 link_mode; +}; + +struct hci_dev_req { + __u16 dev_id; + __u32 dev_opt; +}; + +struct hci_dev_list_req { + __u16 dev_num; + struct hci_dev_req dev_req[0]; /* hci_dev_req structures */ +}; + +struct hci_conn_list_req { + __u16 dev_id; + __u16 conn_num; + struct hci_conn_info conn_info[0]; +}; + +struct hci_conn_info_req { + bdaddr_t bdaddr; + __u8 type; + struct hci_conn_info conn_info[0]; +}; + +struct hci_inquiry_req { + __u16 dev_id; + __u16 flags; + __u8 lap[3]; + __u8 length; + __u8 num_rsp; +}; +#define IREQ_CACHE_FLUSH 0x0001 + +#endif /* __HCI_H */ diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h new file mode 100644 index 000000000000..6d63a47c731b --- /dev/null +++ b/include/net/bluetooth/hci_core.h @@ -0,0 +1,626 @@ +/* + BlueZ - Bluetooth protocol stack for Linux + Copyright (C) 2000-2001 Qualcomm Incorporated + + Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License version 2 as + published by the Free Software Foundation; + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. + IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY + CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + + ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, + COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS + SOFTWARE IS DISCLAIMED. +*/ + +#ifndef __HCI_CORE_H +#define __HCI_CORE_H + +#include <linux/proc_fs.h> +#include <net/bluetooth/hci.h> + +/* HCI upper protocols */ +#define HCI_PROTO_L2CAP 0 +#define HCI_PROTO_SCO 1 + +#define HCI_INIT_TIMEOUT (HZ * 10) + +extern struct proc_dir_entry *proc_bt_hci; + +/* HCI Core structures */ + +struct inquiry_data { + bdaddr_t bdaddr; + __u8 pscan_rep_mode; + __u8 pscan_period_mode; + __u8 pscan_mode; + __u8 dev_class[3]; + __u16 clock_offset; + __s8 rssi; +}; + +struct inquiry_entry { + struct inquiry_entry *next; + __u32 timestamp; + struct inquiry_data data; +}; + +struct inquiry_cache { + spinlock_t lock; + __u32 timestamp; + struct inquiry_entry *list; +}; + +struct hci_conn_hash { + struct list_head list; + spinlock_t lock; + unsigned int acl_num; + unsigned int sco_num; +}; + +struct hci_dev { + struct list_head list; + spinlock_t lock; + atomic_t refcnt; + + char name[8]; + unsigned long flags; + __u16 id; + __u8 type; + bdaddr_t bdaddr; + __u8 features[8]; + __u16 voice_setting; + + __u16 pkt_type; + __u16 link_policy; + __u16 link_mode; + + unsigned long quirks; + + atomic_t cmd_cnt; + unsigned int acl_cnt; + unsigned int sco_cnt; + + unsigned int acl_mtu; + unsigned int sco_mtu; + unsigned int acl_pkts; + unsigned int sco_pkts; + + unsigned long cmd_last_tx; + unsigned long acl_last_tx; + unsigned long sco_last_tx; + + struct tasklet_struct cmd_task; + struct tasklet_struct rx_task; + struct tasklet_struct tx_task; + + struct sk_buff_head rx_q; + struct sk_buff_head raw_q; + struct sk_buff_head cmd_q; + + struct sk_buff *sent_cmd; + + struct semaphore req_lock; + wait_queue_head_t req_wait_q; + __u32 req_status; + __u32 req_result; + + struct inquiry_cache inq_cache; + struct hci_conn_hash conn_hash; + + struct hci_dev_stats stat; + + struct sk_buff_head driver_init; + + void *driver_data; + void *core_data; + + atomic_t promisc; + +#ifdef CONFIG_PROC_FS + struct proc_dir_entry *proc; +#endif + + struct class_device class_dev; + + struct module *owner; + + int (*open)(struct hci_dev *hdev); + int (*close)(struct hci_dev *hdev); + int (*flush)(struct hci_dev *hdev); + int (*send)(struct sk_buff *skb); + void (*destruct)(struct hci_dev *hdev); + void (*notify)(struct hci_dev *hdev, unsigned int evt); + int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg); +}; + +struct hci_conn { + struct list_head list; + + atomic_t refcnt; + spinlock_t lock; + + bdaddr_t dst; + __u16 handle; + __u16 state; + __u8 type; + __u8 out; + __u8 dev_class[3]; + __u32 link_mode; + unsigned long pend; + + unsigned int sent; + + struct sk_buff_head data_q; + + struct timer_list timer; + + struct hci_dev *hdev; + void *l2cap_data; + void *sco_data; + void *priv; + + struct hci_conn *link; +}; + +extern struct hci_proto *hci_proto[]; +extern struct list_head hci_dev_list; +extern struct list_head hci_cb_list; +extern rwlock_t hci_dev_list_lock; +extern rwlock_t hci_cb_list_lock; + +/* ----- Inquiry cache ----- */ +#define INQUIRY_CACHE_AGE_MAX (HZ*30) // 30 seconds +#define INQUIRY_ENTRY_AGE_MAX (HZ*60) // 60 seconds + +#define inquiry_cache_lock(c) spin_lock(&c->lock) +#define inquiry_cache_unlock(c) spin_unlock(&c->lock) +#define inquiry_cache_lock_bh(c) spin_lock_bh(&c->lock) +#define inquiry_cache_unlock_bh(c) spin_unlock_bh(&c->lock) + +static inline void inquiry_cache_init(struct hci_dev *hdev) +{ + struct inquiry_cache *c = &hdev->inq_cache; + spin_lock_init(&c->lock); + c->list = NULL; +} + +static inline int inquiry_cache_empty(struct hci_dev *hdev) +{ + struct inquiry_cache *c = &hdev->inq_cache; + return (c->list == NULL); +} + +static inline long inquiry_cache_age(struct hci_dev *hdev) +{ + struct inquiry_cache *c = &hdev->inq_cache; + return jiffies - c->timestamp; +} + +static inline long inquiry_entry_age(struct inquiry_entry *e) +{ + return jiffies - e->timestamp; +} + +struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr); +void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data); + +/* ----- HCI Connections ----- */ +enum { + HCI_CONN_AUTH_PEND, + HCI_CONN_ENCRYPT_PEND, + HCI_CONN_RSWITCH_PEND +}; + +static inline void hci_conn_hash_init(struct hci_dev *hdev) +{ + struct hci_conn_hash *h = &hdev->conn_hash; + INIT_LIST_HEAD(&h->list); + spin_lock_init(&h->lock); + h->acl_num = 0; + h->sco_num = 0; +} + +static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) +{ + struct hci_conn_hash *h = &hdev->conn_hash; + list_add(&c->list, &h->list); + if (c->type == ACL_LINK) + h->acl_num++; + else + h->sco_num++; +} + +static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) +{ + struct hci_conn_hash *h = &hdev->conn_hash; + list_del(&c->list); + if (c->type == ACL_LINK) + h->acl_num--; + else + h->sco_num--; +} + +static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, + __u16 handle) +{ + struct hci_conn_hash *h = &hdev->conn_hash; + struct list_head *p; + struct hci_conn *c; + + list_for_each(p, &h->list) { + c = list_entry(p, struct hci_conn, list); + if (c->handle == handle) + return c; + } + return NULL; +} + +static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, + __u8 type, bdaddr_t *ba) +{ + struct hci_conn_hash *h = &hdev->conn_hash; + struct list_head *p; + struct hci_conn *c; + + list_for_each(p, &h->list) { + c = list_entry(p, struct hci_conn, list); + if (c->type == type && !bacmp(&c->dst, ba)) + return c; + } + return NULL; +} + +void hci_acl_disconn(struct hci_conn *conn, __u8 reason); +void hci_add_sco(struct hci_conn *conn, __u16 handle); + +struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst); +int hci_conn_del(struct hci_conn *conn); +void hci_conn_hash_flush(struct hci_dev *hdev); + +struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *src); +int hci_conn_auth(struct hci_conn *conn); +int hci_conn_encrypt(struct hci_conn *conn); +int hci_conn_change_link_key(struct hci_conn *conn); +int hci_conn_switch_role(struct hci_conn *conn, uint8_t role); + +static inline void hci_conn_set_timer(struct hci_conn *conn, unsigned long timeout) +{ + mod_timer(&conn->timer, jiffies + timeout); +} + +static inline void hci_conn_del_timer(struct hci_conn *conn) +{ + del_timer(&conn->timer); +} + +static inline void hci_conn_hold(struct hci_conn *conn) +{ + atomic_inc(&conn->refcnt); + hci_conn_del_timer(conn); +} + +static inline void hci_conn_put(struct hci_conn *conn) +{ + if (atomic_dec_and_test(&conn->refcnt)) { + if (conn->type == ACL_LINK) { + unsigned long timeo = (conn->out) ? + HCI_DISCONN_TIMEOUT : HCI_DISCONN_TIMEOUT * 2; + hci_conn_set_timer(conn, timeo); + } else + hci_conn_set_timer(conn, HZ / 100); + } +} + +/* ----- HCI tasks ----- */ +static inline void hci_sched_cmd(struct hci_dev *hdev) +{ + tasklet_schedule(&hdev->cmd_task); +} + +static inline void hci_sched_rx(struct hci_dev *hdev) +{ + tasklet_schedule(&hdev->rx_task); +} + +static inline void hci_sched_tx(struct hci_dev *hdev) +{ + tasklet_schedule(&hdev->tx_task); +} + +/* ----- HCI Devices ----- */ +static inline void __hci_dev_put(struct hci_dev *d) +{ + if (atomic_dec_and_test(&d->refcnt)) + d->destruct(d); +} + +static inline void hci_dev_put(struct hci_dev *d) +{ + __hci_dev_put(d); + module_put(d->owner); +} + +static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d) +{ + atomic_inc(&d->refcnt); + return d; +} + +static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) +{ + if (try_module_get(d->owner)) + return __hci_dev_hold(d); + return NULL; +} + +#define hci_dev_lock(d) spin_lock(&d->lock) +#define hci_dev_unlock(d) spin_unlock(&d->lock) +#define hci_dev_lock_bh(d) spin_lock_bh(&d->lock) +#define hci_dev_unlock_bh(d) spin_unlock_bh(&d->lock) + +struct hci_dev *hci_dev_get(int index); +struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst); + +struct hci_dev *hci_alloc_dev(void); +void hci_free_dev(struct hci_dev *hdev); +int hci_register_dev(struct hci_dev *hdev); +int hci_unregister_dev(struct hci_dev *hdev); +int hci_suspend_dev(struct hci_dev *hdev); +int hci_resume_dev(struct hci_dev *hdev); +int hci_dev_open(__u16 dev); +int hci_dev_close(__u16 dev); +int hci_dev_reset(__u16 dev); +int hci_dev_reset_stat(__u16 dev); +int hci_dev_cmd(unsigned int cmd, void __user *arg); +int hci_get_dev_list(void __user *arg); +int hci_get_dev_info(void __user *arg); +int hci_get_conn_list(void __user *arg); +int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); +int hci_inquiry(void __user *arg); + +void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); + +/* Receive frame from HCI drivers */ +static inline int hci_recv_frame(struct sk_buff *skb) +{ + struct hci_dev *hdev = (struct hci_dev *) skb->dev; + if (!hdev || (!test_bit(HCI_UP, &hdev->flags) + && !test_bit(HCI_INIT, &hdev->flags))) { + kfree_skb(skb); + return -ENXIO; + } + + /* Incomming skb */ + bt_cb(skb)->incoming = 1; + + /* Time stamp */ + do_gettimeofday(&skb->stamp); + + /* Queue frame for rx task */ + skb_queue_tail(&hdev->rx_q, skb); + hci_sched_rx(hdev); + return 0; +} + +int hci_register_sysfs(struct hci_dev *hdev); +void hci_unregister_sysfs(struct hci_dev *hdev); + +#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->class_dev.dev = (pdev)) + +/* ----- LMP capabilities ----- */ +#define lmp_rswitch_capable(dev) (dev->features[0] & LMP_RSWITCH) +#define lmp_encrypt_capable(dev) (dev->features[0] & LMP_ENCRYPT) + +/* ----- HCI protocols ----- */ +struct hci_proto { + char *name; + unsigned int id; + unsigned long flags; + + void *priv; + + int (*connect_ind) (struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type); + int (*connect_cfm) (struct hci_conn *conn, __u8 status); + int (*disconn_ind) (struct hci_conn *conn, __u8 reason); + int (*recv_acldata) (struct hci_conn *conn, struct sk_buff *skb, __u16 flags); + int (*recv_scodata) (struct hci_conn *conn, struct sk_buff *skb); + int (*auth_cfm) (struct hci_conn *conn, __u8 status); + int (*encrypt_cfm) (struct hci_conn *conn, __u8 status); +}; + +static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type) +{ + register struct hci_proto *hp; + int mask = 0; + + hp = hci_proto[HCI_PROTO_L2CAP]; + if (hp && hp->connect_ind) + mask |= hp->connect_ind(hdev, bdaddr, type); + + hp = hci_proto[HCI_PROTO_SCO]; + if (hp && hp->connect_ind) + mask |= hp->connect_ind(hdev, bdaddr, type); + + return mask; +} + +static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status) +{ + register struct hci_proto *hp; + + hp = hci_proto[HCI_PROTO_L2CAP]; + if (hp && hp->connect_cfm) + hp->connect_cfm(conn, status); + + hp = hci_proto[HCI_PROTO_SCO]; + if (hp && hp->connect_cfm) + hp->connect_cfm(conn, status); +} + +static inline void hci_proto_disconn_ind(struct hci_conn *conn, __u8 reason) +{ + register struct hci_proto *hp; + + hp = hci_proto[HCI_PROTO_L2CAP]; + if (hp && hp->disconn_ind) + hp->disconn_ind(conn, reason); + + hp = hci_proto[HCI_PROTO_SCO]; + if (hp && hp->disconn_ind) + hp->disconn_ind(conn, reason); +} + +static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status) +{ + register struct hci_proto *hp; + + hp = hci_proto[HCI_PROTO_L2CAP]; + if (hp && hp->auth_cfm) + hp->auth_cfm(conn, status); + + hp = hci_proto[HCI_PROTO_SCO]; + if (hp && hp->auth_cfm) + hp->auth_cfm(conn, status); +} + +static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status) +{ + register struct hci_proto *hp; + + hp = hci_proto[HCI_PROTO_L2CAP]; + if (hp && hp->encrypt_cfm) + hp->encrypt_cfm(conn, status); + + hp = hci_proto[HCI_PROTO_SCO]; + if (hp && hp->encrypt_cfm) + hp->encrypt_cfm(conn, status); +} + +int hci_register_proto(struct hci_proto *hproto); +int hci_unregister_proto(struct hci_proto *hproto); + +/* ----- HCI callbacks ----- */ +struct hci_cb { + struct list_head list; + + char *name; + + void (*auth_cfm) (struct hci_conn *conn, __u8 status); + void (*encrypt_cfm) (struct hci_conn *conn, __u8 status, __u8 encrypt); + void (*key_change_cfm) (struct hci_conn *conn, __u8 status); + void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); +}; + +static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) +{ + struct list_head *p; + + hci_proto_auth_cfm(conn, status); + + read_lock_bh(&hci_cb_list_lock); + list_for_each(p, &hci_cb_list) { + struct hci_cb *cb = list_entry(p, struct hci_cb, list); + if (cb->auth_cfm) + cb->auth_cfm(conn, status); + } + read_unlock_bh(&hci_cb_list_lock); +} + +static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt) +{ + struct list_head *p; + + hci_proto_encrypt_cfm(conn, status); + + read_lock_bh(&hci_cb_list_lock); + list_for_each(p, &hci_cb_list) { + struct hci_cb *cb = list_entry(p, struct hci_cb, list); + if (cb->encrypt_cfm) + cb->encrypt_cfm(conn, status, encrypt); + } + read_unlock_bh(&hci_cb_list_lock); +} + +static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) +{ + struct list_head *p; + + read_lock_bh(&hci_cb_list_lock); + list_for_each(p, &hci_cb_list) { + struct hci_cb *cb = list_entry(p, struct hci_cb, list); + if (cb->key_change_cfm) + cb->key_change_cfm(conn, status); + } + read_unlock_bh(&hci_cb_list_lock); +} + +static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, __u8 role) +{ + struct list_head *p; + + read_lock_bh(&hci_cb_list_lock); + list_for_each(p, &hci_cb_list) { + struct hci_cb *cb = list_entry(p, struct hci_cb, list); + if (cb->role_switch_cfm) + cb->role_switch_cfm(conn, status, role); + } + read_unlock_bh(&hci_cb_list_lock); +} + +int hci_register_cb(struct hci_cb *hcb); +int hci_unregister_cb(struct hci_cb *hcb); + +int hci_register_notifier(struct notifier_block *nb); +int hci_unregister_notifier(struct notifier_block *nb); + +int hci_send_cmd(struct hci_dev *hdev, __u16 ogf, __u16 ocf, __u32 plen, void *param); +int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags); +int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); + +void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 ogf, __u16 ocf); + +void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data); + +/* ----- HCI Sockets ----- */ +void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); + +/* HCI info for socket */ +#define hci_pi(sk) ((struct hci_pinfo *) sk) + +struct hci_pinfo { + struct bt_sock bt; + struct hci_dev *hdev; + struct hci_filter filter; + __u32 cmsg_mask; +}; + +/* HCI security filter */ +#define HCI_SFLT_MAX_OGF 5 + +struct hci_sec_filter { + __u32 type_mask; + __u32 event_mask[2]; + __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4]; +}; + +/* ----- HCI requests ----- */ +#define HCI_REQ_DONE 0 +#define HCI_REQ_PEND 1 +#define HCI_REQ_CANCELED 2 + +#define hci_req_lock(d) down(&d->req_lock) +#define hci_req_unlock(d) up(&d->req_lock) + +void hci_req_complete(struct hci_dev *hdev, int result); + +#endif /* __HCI_CORE_H */ diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h new file mode 100644 index 000000000000..8242a0ee1f58 --- /dev/null +++ b/include/net/bluetooth/l2cap.h @@ -0,0 +1,238 @@ +/* + BlueZ - Bluetooth protocol stack for Linux + Copyright (C) 2000-2001 Qualcomm Incorporated + + Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License version 2 as + published by the Free Software Foundation; + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. + IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY + CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + + ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, + COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS + SOFTWARE IS DISCLAIMED. +*/ + +#ifndef __L2CAP_H +#define __L2CAP_H + +/* L2CAP defaults */ +#define L2CAP_DEFAULT_MTU 672 +#define L2CAP_DEFAULT_FLUSH_TO 0xFFFF + +#define L2CAP_CONN_TIMEOUT (HZ * 40) + +/* L2CAP socket address */ +struct sockaddr_l2 { + sa_family_t l2_family; + unsigned short l2_psm; + bdaddr_t l2_bdaddr; +}; + +/* L2CAP socket options */ +#define L2CAP_OPTIONS 0x01 +struct l2cap_options { + __u16 omtu; + __u16 imtu; + __u16 flush_to; + __u8 mode; +}; + +#define L2CAP_CONNINFO 0x02 +struct l2cap_conninfo { + __u16 hci_handle; + __u8 dev_class[3]; +}; + +#define L2CAP_LM 0x03 +#define L2CAP_LM_MASTER 0x0001 +#define L2CAP_LM_AUTH 0x0002 +#define L2CAP_LM_ENCRYPT 0x0004 +#define L2CAP_LM_TRUSTED 0x0008 +#define L2CAP_LM_RELIABLE 0x0010 +#define L2CAP_LM_SECURE 0x0020 + +/* L2CAP command codes */ +#define L2CAP_COMMAND_REJ 0x01 +#define L2CAP_CONN_REQ 0x02 +#define L2CAP_CONN_RSP 0x03 +#define L2CAP_CONF_REQ 0x04 +#define L2CAP_CONF_RSP 0x05 +#define L2CAP_DISCONN_REQ 0x06 +#define L2CAP_DISCONN_RSP 0x07 +#define L2CAP_ECHO_REQ 0x08 +#define L2CAP_ECHO_RSP 0x09 +#define L2CAP_INFO_REQ 0x0a +#define L2CAP_INFO_RSP 0x0b + +/* L2CAP structures */ +struct l2cap_hdr { + __u16 len; + __u16 cid; +} __attribute__ ((packed)); +#define L2CAP_HDR_SIZE 4 + +struct l2cap_cmd_hdr { + __u8 code; + __u8 ident; + __u16 len; +} __attribute__ ((packed)); +#define L2CAP_CMD_HDR_SIZE 4 + +struct l2cap_cmd_rej { + __u16 reason; +} __attribute__ ((packed)); + +struct l2cap_conn_req { + __u16 psm; + __u16 scid; +} __attribute__ ((packed)); + +struct l2cap_conn_rsp { + __u16 dcid; + __u16 scid; + __u16 result; + __u16 status; +} __attribute__ ((packed)); + +/* connect result */ +#define L2CAP_CR_SUCCESS 0x0000 +#define L2CAP_CR_PEND 0x0001 +#define L2CAP_CR_BAD_PSM 0x0002 +#define L2CAP_CR_SEC_BLOCK 0x0003 +#define L2CAP_CR_NO_MEM 0x0004 + +/* connect status */ +#define L2CAP_CS_NO_INFO 0x0000 +#define L2CAP_CS_AUTHEN_PEND 0x0001 +#define L2CAP_CS_AUTHOR_PEND 0x0002 + +struct l2cap_conf_req { + __u16 dcid; + __u16 flags; + __u8 data[0]; +} __attribute__ ((packed)); + +struct l2cap_conf_rsp { + __u16 scid; + __u16 flags; + __u16 result; + __u8 data[0]; +} __attribute__ ((packed)); + +#define L2CAP_CONF_SUCCESS 0x00 +#define L2CAP_CONF_UNACCEPT 0x01 + +struct l2cap_conf_opt { + __u8 type; + __u8 len; + __u8 val[0]; +} __attribute__ ((packed)); +#define L2CAP_CONF_OPT_SIZE 2 + +#define L2CAP_CONF_MTU 0x01 +#define L2CAP_CONF_FLUSH_TO 0x02 +#define L2CAP_CONF_QOS 0x03 +#define L2CAP_CONF_RFC 0x04 + +#define L2CAP_CONF_MAX_SIZE 22 + +struct l2cap_disconn_req { + __u16 dcid; + __u16 scid; +} __attribute__ ((packed)); + +struct l2cap_disconn_rsp { + __u16 dcid; + __u16 scid; +} __attribute__ ((packed)); + +struct l2cap_info_req { + __u16 type; + __u8 data[0]; +} __attribute__ ((packed)); + +struct l2cap_info_rsp { + __u16 type; + __u16 result; + __u8 data[0]; +} __attribute__ ((packed)); + +/* info type */ +#define L2CAP_IT_CL_MTU 0x0001 +#define L2CAP_IT_FEAT_MASK 0x0002 + +/* info result */ +#define L2CAP_IR_SUCCESS 0x0000 +#define L2CAP_IR_NOTSUPP 0x0001 + +/* ----- L2CAP connections ----- */ +struct l2cap_chan_list { + struct sock *head; + rwlock_t lock; + long num; +}; + +struct l2cap_conn { + struct hci_conn *hcon; + + bdaddr_t *dst; + bdaddr_t *src; + + unsigned int mtu; + + spinlock_t lock; + + struct sk_buff *rx_skb; + __u32 rx_len; + __u8 rx_ident; + __u8 tx_ident; + + struct l2cap_chan_list chan_list; +}; + +/* ----- L2CAP channel and socket info ----- */ +#define l2cap_pi(sk) ((struct l2cap_pinfo *) sk) + +struct l2cap_pinfo { + struct bt_sock bt; + __u16 psm; + __u16 dcid; + __u16 scid; + + __u16 imtu; + __u16 omtu; + __u16 flush_to; + + __u32 link_mode; + + __u8 conf_state; + __u8 conf_retry; + __u16 conf_mtu; + + __u8 ident; + + __u16 sport; + + struct l2cap_conn *conn; + struct sock *next_c; + struct sock *prev_c; +}; + +#define L2CAP_CONF_REQ_SENT 0x01 +#define L2CAP_CONF_INPUT_DONE 0x02 +#define L2CAP_CONF_OUTPUT_DONE 0x04 +#define L2CAP_CONF_MAX_RETRIES 2 + +void l2cap_load(void); + +#endif /* __L2CAP_H */ diff --git a/include/net/bluetooth/rfcomm.h b/include/net/bluetooth/rfcomm.h new file mode 100644 index 000000000000..13669bad00b3 --- /dev/null +++ b/include/net/bluetooth/rfcomm.h @@ -0,0 +1,353 @@ +/* + RFCOMM implementation for Linux Bluetooth stack (BlueZ). + Copyright (C) 2002 Maxim Krasnyansky <maxk@qualcomm.com> + Copyright (C) 2002 Marcel Holtmann <marcel@holtmann.org> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License version 2 as + published by the Free Software Foundation; + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. + IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY + CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + + ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, + COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS + SOFTWARE IS DISCLAIMED. +*/ + +#ifndef __RFCOMM_H +#define __RFCOMM_H + +#define RFCOMM_PSM 3 + +#define RFCOMM_CONN_TIMEOUT (HZ * 30) +#define RFCOMM_DISC_TIMEOUT (HZ * 20) +#define RFCOMM_AUTH_TIMEOUT (HZ * 25) + +#define RFCOMM_DEFAULT_MTU 127 +#define RFCOMM_DEFAULT_CREDITS 7 + +#define RFCOMM_MAX_L2CAP_MTU 1024 +#define RFCOMM_MAX_CREDITS 40 + +#define RFCOMM_SKB_HEAD_RESERVE 8 +#define RFCOMM_SKB_TAIL_RESERVE 2 +#define RFCOMM_SKB_RESERVE (RFCOMM_SKB_HEAD_RESERVE + RFCOMM_SKB_TAIL_RESERVE) + +#define RFCOMM_SABM 0x2f +#define RFCOMM_DISC 0x43 +#define RFCOMM_UA 0x63 +#define RFCOMM_DM 0x0f +#define RFCOMM_UIH 0xef + +#define RFCOMM_TEST 0x08 +#define RFCOMM_FCON 0x28 +#define RFCOMM_FCOFF 0x18 +#define RFCOMM_MSC 0x38 +#define RFCOMM_RPN 0x24 +#define RFCOMM_RLS 0x14 +#define RFCOMM_PN 0x20 +#define RFCOMM_NSC 0x04 + +#define RFCOMM_V24_FC 0x02 +#define RFCOMM_V24_RTC 0x04 +#define RFCOMM_V24_RTR 0x08 +#define RFCOMM_V24_IC 0x40 +#define RFCOMM_V24_DV 0x80 + +#define RFCOMM_RPN_BR_2400 0x0 +#define RFCOMM_RPN_BR_4800 0x1 +#define RFCOMM_RPN_BR_7200 0x2 +#define RFCOMM_RPN_BR_9600 0x3 +#define RFCOMM_RPN_BR_19200 0x4 +#define RFCOMM_RPN_BR_38400 0x5 +#define RFCOMM_RPN_BR_57600 0x6 +#define RFCOMM_RPN_BR_115200 0x7 +#define RFCOMM_RPN_BR_230400 0x8 + +#define RFCOMM_RPN_DATA_5 0x0 +#define RFCOMM_RPN_DATA_6 0x1 +#define RFCOMM_RPN_DATA_7 0x2 +#define RFCOMM_RPN_DATA_8 0x3 + +#define RFCOMM_RPN_STOP_1 0 +#define RFCOMM_RPN_STOP_15 1 + +#define RFCOMM_RPN_PARITY_NONE 0x0 +#define RFCOMM_RPN_PARITY_ODD 0x4 +#define RFCOMM_RPN_PARITY_EVEN 0x5 +#define RFCOMM_RPN_PARITY_MARK 0x6 +#define RFCOMM_RPN_PARITY_SPACE 0x7 + +#define RFCOMM_RPN_FLOW_NONE 0x00 + +#define RFCOMM_RPN_XON_CHAR 0x11 +#define RFCOMM_RPN_XOFF_CHAR 0x13 + +#define RFCOMM_RPN_PM_BITRATE 0x0001 +#define RFCOMM_RPN_PM_DATA 0x0002 +#define RFCOMM_RPN_PM_STOP 0x0004 +#define RFCOMM_RPN_PM_PARITY 0x0008 +#define RFCOMM_RPN_PM_PARITY_TYPE 0x0010 +#define RFCOMM_RPN_PM_XON 0x0020 +#define RFCOMM_RPN_PM_XOFF 0x0040 +#define RFCOMM_RPN_PM_FLOW 0x3F00 + +#define RFCOMM_RPN_PM_ALL 0x3F7F + +struct rfcomm_hdr { + u8 addr; + u8 ctrl; + u8 len; // Actual size can be 2 bytes +} __attribute__ ((packed)); + +struct rfcomm_cmd { + u8 addr; + u8 ctrl; + u8 len; + u8 fcs; +} __attribute__ ((packed)); + +struct rfcomm_mcc { + u8 type; + u8 len; +} __attribute__ ((packed)); + +struct rfcomm_pn { + u8 dlci; + u8 flow_ctrl; + u8 priority; + u8 ack_timer; + u16 mtu; + u8 max_retrans; + u8 credits; +} __attribute__ ((packed)); + +struct rfcomm_rpn { + u8 dlci; + u8 bit_rate; + u8 line_settings; + u8 flow_ctrl; + u8 xon_char; + u8 xoff_char; + u16 param_mask; +} __attribute__ ((packed)); + +struct rfcomm_rls { + u8 dlci; + u8 status; +} __attribute__ ((packed)); + +struct rfcomm_msc { + u8 dlci; + u8 v24_sig; +} __attribute__ ((packed)); + +/* ---- Core structures, flags etc ---- */ + +struct rfcomm_session { + struct list_head list; + struct socket *sock; + unsigned long state; + unsigned long flags; + atomic_t refcnt; + int initiator; + + /* Default DLC parameters */ + int cfc; + uint mtu; + + struct list_head dlcs; +}; + +struct rfcomm_dlc { + struct list_head list; + struct rfcomm_session *session; + struct sk_buff_head tx_queue; + struct timer_list timer; + + spinlock_t lock; + unsigned long state; + unsigned long flags; + atomic_t refcnt; + u8 dlci; + u8 addr; + u8 priority; + u8 v24_sig; + u8 mscex; + + u32 link_mode; + + uint mtu; + uint cfc; + uint rx_credits; + uint tx_credits; + + void *owner; + + void (*data_ready)(struct rfcomm_dlc *d, struct sk_buff *skb); + void (*state_change)(struct rfcomm_dlc *d, int err); + void (*modem_status)(struct rfcomm_dlc *d, u8 v24_sig); +}; + +/* DLC and session flags */ +#define RFCOMM_RX_THROTTLED 0 +#define RFCOMM_TX_THROTTLED 1 +#define RFCOMM_TIMED_OUT 2 +#define RFCOMM_MSC_PENDING 3 +#define RFCOMM_AUTH_PENDING 4 +#define RFCOMM_AUTH_ACCEPT 5 +#define RFCOMM_AUTH_REJECT 6 + +/* Scheduling flags and events */ +#define RFCOMM_SCHED_STATE 0 +#define RFCOMM_SCHED_RX 1 +#define RFCOMM_SCHED_TX 2 +#define RFCOMM_SCHED_TIMEO 3 +#define RFCOMM_SCHED_AUTH 4 +#define RFCOMM_SCHED_WAKEUP 31 + +/* MSC exchange flags */ +#define RFCOMM_MSCEX_TX 1 +#define RFCOMM_MSCEX_RX 2 +#define RFCOMM_MSCEX_OK (RFCOMM_MSCEX_TX + RFCOMM_MSCEX_RX) + +/* CFC states */ +#define RFCOMM_CFC_UNKNOWN -1 +#define RFCOMM_CFC_DISABLED 0 +#define RFCOMM_CFC_ENABLED RFCOMM_MAX_CREDITS + +/* ---- RFCOMM DLCs (channels) ---- */ +struct rfcomm_dlc *rfcomm_dlc_alloc(int prio); +void rfcomm_dlc_free(struct rfcomm_dlc *d); +int rfcomm_dlc_open(struct rfcomm_dlc *d, bdaddr_t *src, bdaddr_t *dst, u8 channel); +int rfcomm_dlc_close(struct rfcomm_dlc *d, int reason); +int rfcomm_dlc_send(struct rfcomm_dlc *d, struct sk_buff *skb); +int rfcomm_dlc_set_modem_status(struct rfcomm_dlc *d, u8 v24_sig); +int rfcomm_dlc_get_modem_status(struct rfcomm_dlc *d, u8 *v24_sig); + +#define rfcomm_dlc_lock(d) spin_lock(&d->lock) +#define rfcomm_dlc_unlock(d) spin_unlock(&d->lock) + +static inline void rfcomm_dlc_hold(struct rfcomm_dlc *d) +{ + atomic_inc(&d->refcnt); +} + +static inline void rfcomm_dlc_put(struct rfcomm_dlc *d) +{ + if (atomic_dec_and_test(&d->refcnt)) + rfcomm_dlc_free(d); +} + +extern void FASTCALL(__rfcomm_dlc_throttle(struct rfcomm_dlc *d)); +extern void FASTCALL(__rfcomm_dlc_unthrottle(struct rfcomm_dlc *d)); + +static inline void rfcomm_dlc_throttle(struct rfcomm_dlc *d) +{ + if (!test_and_set_bit(RFCOMM_RX_THROTTLED, &d->flags)) + __rfcomm_dlc_throttle(d); +} + +static inline void rfcomm_dlc_unthrottle(struct rfcomm_dlc *d) +{ + if (test_and_clear_bit(RFCOMM_RX_THROTTLED, &d->flags)) + __rfcomm_dlc_unthrottle(d); +} + +/* ---- RFCOMM sessions ---- */ +void rfcomm_session_getaddr(struct rfcomm_session *s, bdaddr_t *src, bdaddr_t *dst); + +static inline void rfcomm_session_hold(struct rfcomm_session *s) +{ + atomic_inc(&s->refcnt); +} + +/* ---- RFCOMM chechsum ---- */ +extern u8 rfcomm_crc_table[]; + +/* ---- RFCOMM sockets ---- */ +struct sockaddr_rc { + sa_family_t rc_family; + bdaddr_t rc_bdaddr; + u8 rc_channel; +}; + +#define RFCOMM_CONNINFO 0x02 +struct rfcomm_conninfo { + __u16 hci_handle; + __u8 dev_class[3]; +}; + +#define RFCOMM_LM 0x03 +#define RFCOMM_LM_MASTER 0x0001 +#define RFCOMM_LM_AUTH 0x0002 +#define RFCOMM_LM_ENCRYPT 0x0004 +#define RFCOMM_LM_TRUSTED 0x0008 +#define RFCOMM_LM_RELIABLE 0x0010 +#define RFCOMM_LM_SECURE 0x0020 + +#define rfcomm_pi(sk) ((struct rfcomm_pinfo *) sk) + +struct rfcomm_pinfo { + struct bt_sock bt; + struct rfcomm_dlc *dlc; + u8 channel; + u32 link_mode; +}; + +int rfcomm_init_sockets(void); +void rfcomm_cleanup_sockets(void); + +int rfcomm_connect_ind(struct rfcomm_session *s, u8 channel, struct rfcomm_dlc **d); + +/* ---- RFCOMM TTY ---- */ +#define RFCOMM_MAX_DEV 256 + +#define RFCOMMCREATEDEV _IOW('R', 200, int) +#define RFCOMMRELEASEDEV _IOW('R', 201, int) +#define RFCOMMGETDEVLIST _IOR('R', 210, int) +#define RFCOMMGETDEVINFO _IOR('R', 211, int) +#define RFCOMMSTEALDLC _IOW('R', 220, int) + +#define RFCOMM_REUSE_DLC 0 +#define RFCOMM_RELEASE_ONHUP 1 +#define RFCOMM_HANGUP_NOW 2 +#define RFCOMM_TTY_ATTACHED 3 + +struct rfcomm_dev_req { + s16 dev_id; + u32 flags; + bdaddr_t src; + bdaddr_t dst; + u8 channel; + +}; + +struct rfcomm_dev_info { + s16 id; + u32 flags; + u16 state; + bdaddr_t src; + bdaddr_t dst; + u8 channel; +}; + +struct rfcomm_dev_list_req { + u16 dev_num; + struct rfcomm_dev_info dev_info[0]; +}; + +int rfcomm_dev_ioctl(struct sock *sk, unsigned int cmd, void __user *arg); +int rfcomm_init_ttys(void); +void rfcomm_cleanup_ttys(void); + +extern struct proc_dir_entry *proc_bt_rfcomm; + +#endif /* __RFCOMM_H */ diff --git a/include/net/bluetooth/sco.h b/include/net/bluetooth/sco.h new file mode 100644 index 000000000000..e28a2a771471 --- /dev/null +++ b/include/net/bluetooth/sco.h @@ -0,0 +1,79 @@ +/* + BlueZ - Bluetooth protocol stack for Linux + Copyright (C) 2000-2001 Qualcomm Incorporated + + Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License version 2 as + published by the Free Software Foundation; + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. + IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY + CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + + ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, + COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS + SOFTWARE IS DISCLAIMED. +*/ + +#ifndef __SCO_H +#define __SCO_H + +/* SCO defaults */ +#define SCO_DEFAULT_MTU 500 +#define SCO_DEFAULT_FLUSH_TO 0xFFFF + +#define SCO_CONN_TIMEOUT (HZ * 40) +#define SCO_DISCONN_TIMEOUT (HZ * 2) +#define SCO_CONN_IDLE_TIMEOUT (HZ * 60) + +/* SCO socket address */ +struct sockaddr_sco { + sa_family_t sco_family; + bdaddr_t sco_bdaddr; +}; + +/* SCO socket options */ +#define SCO_OPTIONS 0x01 +struct sco_options { + __u16 mtu; +}; + +#define SCO_CONNINFO 0x02 +struct sco_conninfo { + __u16 hci_handle; + __u8 dev_class[3]; +}; + +/* ---- SCO connections ---- */ +struct sco_conn { + struct hci_conn *hcon; + + bdaddr_t *dst; + bdaddr_t *src; + + spinlock_t lock; + struct sock *sk; + + unsigned int mtu; +}; + +#define sco_conn_lock(c) spin_lock(&c->lock); +#define sco_conn_unlock(c) spin_unlock(&c->lock); + +/* ----- SCO socket info ----- */ +#define sco_pi(sk) ((struct sco_pinfo *) sk) + +struct sco_pinfo { + struct bt_sock bt; + __u32 flags; + struct sco_conn *conn; +}; + +#endif /* __SCO_H */ diff --git a/include/net/checksum.h b/include/net/checksum.h new file mode 100644 index 000000000000..e3ea7cc2c728 --- /dev/null +++ b/include/net/checksum.h @@ -0,0 +1,87 @@ +/* + * INET An implementation of the TCP/IP protocol suite for the LINUX + * operating system. INET is implemented using the BSD Socket + * interface as the means of communication with the user level. + * + * Checksumming functions for IP, TCP, UDP and so on + * + * Authors: Jorge Cwik, <jorge@laser.satlink.net> + * Arnt Gulbrandsen, <agulbra@nvg.unit.no> + * Borrows very liberally from tcp.c and ip.c, see those + * files for more names. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#ifndef _CHECKSUM_H +#define _CHECKSUM_H + +#include <linux/errno.h> +#include <asm/types.h> +#include <asm/byteorder.h> +#include <asm/uaccess.h> +#include <asm/checksum.h> + +#ifndef _HAVE_ARCH_COPY_AND_CSUM_FROM_USER +static inline +unsigned int csum_and_copy_from_user (const unsigned char __user *src, unsigned char *dst, + int len, int sum, int *err_ptr) +{ + if (access_ok(VERIFY_READ, src, len)) + return csum_partial_copy_from_user(src, dst, len, sum, err_ptr); + + if (len) + *err_ptr = -EFAULT; + + return sum; +} +#endif + +#ifndef HAVE_CSUM_COPY_USER +static __inline__ unsigned int csum_and_copy_to_user +(const unsigned char *src, unsigned char __user *dst, int len, unsigned int sum, int *err_ptr) +{ + sum = csum_partial(src, len, sum); + + if (access_ok(VERIFY_WRITE, dst, len)) { + if (copy_to_user(dst, src, len) == 0) + return sum; + } + if (len) + *err_ptr = -EFAULT; + + return -1; /* invalid checksum */ +} +#endif + +static inline unsigned int csum_add(unsigned int csum, unsigned int addend) +{ + csum += addend; + return csum + (csum < addend); +} + +static inline unsigned int csum_sub(unsigned int csum, unsigned int addend) +{ + return csum_add(csum, ~addend); +} + +static inline unsigned int +csum_block_add(unsigned int csum, unsigned int csum2, int offset) +{ + if (offset&1) + csum2 = ((csum2&0xFF00FF)<<8)+((csum2>>8)&0xFF00FF); + return csum_add(csum, csum2); +} + +static inline unsigned int +csum_block_sub(unsigned int csum, unsigned int csum2, int offset) +{ + if (offset&1) + csum2 = ((csum2&0xFF00FF)<<8)+((csum2>>8)&0xFF00FF); + return csum_sub(csum, csum2); +} + +#endif diff --git a/include/net/compat.h b/include/net/compat.h new file mode 100644 index 000000000000..9983fd857804 --- /dev/null +++ b/include/net/compat.h @@ -0,0 +1,39 @@ +#ifndef NET_COMPAT_H +#define NET_COMPAT_H + +#include <linux/config.h> + +#if defined(CONFIG_COMPAT) + +#include <linux/compat.h> + +struct compat_msghdr { + compat_uptr_t msg_name; /* void * */ + compat_int_t msg_namelen; + compat_uptr_t msg_iov; /* struct compat_iovec * */ + compat_size_t msg_iovlen; + compat_uptr_t msg_control; /* void * */ + compat_size_t msg_controllen; + compat_uint_t msg_flags; +}; + +struct compat_cmsghdr { + compat_size_t cmsg_len; + compat_int_t cmsg_level; + compat_int_t cmsg_type; +}; + +#else /* defined(CONFIG_COMPAT) */ +#define compat_msghdr msghdr /* to avoid compiler warnings */ +#endif /* defined(CONFIG_COMPAT) */ + +extern int get_compat_msghdr(struct msghdr *, struct compat_msghdr __user *); +extern int verify_compat_iovec(struct msghdr *, struct iovec *, char *, int); +extern asmlinkage long compat_sys_sendmsg(int,struct compat_msghdr __user *,unsigned); +extern asmlinkage long compat_sys_recvmsg(int,struct compat_msghdr __user *,unsigned); +extern asmlinkage long compat_sys_getsockopt(int, int, int, char __user *, int __user *); +extern int put_cmsg_compat(struct msghdr*, int, int, int, void *); +extern int cmsghdr_from_user_compat_to_kern(struct msghdr *, unsigned char *, + int); + +#endif /* NET_COMPAT_H */ diff --git a/include/net/datalink.h b/include/net/datalink.h new file mode 100644 index 000000000000..5797ba3d2eb5 --- /dev/null +++ b/include/net/datalink.h @@ -0,0 +1,18 @@ +#ifndef _NET_INET_DATALINK_H_ +#define _NET_INET_DATALINK_H_ + +struct datalink_proto { + unsigned char type[8]; + + struct llc_sap *sap; + + unsigned short header_length; + + int (*rcvfunc)(struct sk_buff *, struct net_device *, + struct packet_type *); + int (*request)(struct datalink_proto *, struct sk_buff *, + unsigned char *); + struct list_head node; +}; + +#endif diff --git a/include/net/dn.h b/include/net/dn.h new file mode 100644 index 000000000000..5551c46db397 --- /dev/null +++ b/include/net/dn.h @@ -0,0 +1,236 @@ +#ifndef _NET_DN_H +#define _NET_DN_H + +#include <linux/dn.h> +#include <net/sock.h> +#include <asm/byteorder.h> + +typedef unsigned short dn_address; + +#define dn_ntohs(x) le16_to_cpu((unsigned short)(x)) +#define dn_htons(x) cpu_to_le16((unsigned short)(x)) + +struct dn_scp /* Session Control Port */ +{ + unsigned char state; +#define DN_O 1 /* Open */ +#define DN_CR 2 /* Connect Receive */ +#define DN_DR 3 /* Disconnect Reject */ +#define DN_DRC 4 /* Discon. Rej. Complete*/ +#define DN_CC 5 /* Connect Confirm */ +#define DN_CI 6 /* Connect Initiate */ +#define DN_NR 7 /* No resources */ +#define DN_NC 8 /* No communication */ +#define DN_CD 9 /* Connect Delivery */ +#define DN_RJ 10 /* Rejected */ +#define DN_RUN 11 /* Running */ +#define DN_DI 12 /* Disconnect Initiate */ +#define DN_DIC 13 /* Disconnect Complete */ +#define DN_DN 14 /* Disconnect Notificat */ +#define DN_CL 15 /* Closed */ +#define DN_CN 16 /* Closed Notification */ + + unsigned short addrloc; + unsigned short addrrem; + unsigned short numdat; + unsigned short numoth; + unsigned short numoth_rcv; + unsigned short numdat_rcv; + unsigned short ackxmt_dat; + unsigned short ackxmt_oth; + unsigned short ackrcv_dat; + unsigned short ackrcv_oth; + unsigned char flowrem_sw; + unsigned char flowloc_sw; +#define DN_SEND 2 +#define DN_DONTSEND 1 +#define DN_NOCHANGE 0 + unsigned short flowrem_dat; + unsigned short flowrem_oth; + unsigned short flowloc_dat; + unsigned short flowloc_oth; + unsigned char services_rem; + unsigned char services_loc; + unsigned char info_rem; + unsigned char info_loc; + + unsigned short segsize_rem; + unsigned short segsize_loc; + + unsigned char nonagle; + unsigned char multi_ireq; + unsigned char accept_mode; + unsigned long seg_total; /* Running total of current segment */ + + struct optdata_dn conndata_in; + struct optdata_dn conndata_out; + struct optdata_dn discdata_in; + struct optdata_dn discdata_out; + struct accessdata_dn accessdata; + + struct sockaddr_dn addr; /* Local address */ + struct sockaddr_dn peer; /* Remote address */ + + /* + * In this case the RTT estimation is not specified in the + * docs, nor is any back off algorithm. Here we follow well + * known tcp algorithms with a few small variations. + * + * snd_window: Max number of packets we send before we wait for + * an ack to come back. This will become part of a + * more complicated scheme when we support flow + * control. + * + * nsp_srtt: Round-Trip-Time (x8) in jiffies. This is a rolling + * average. + * nsp_rttvar: Round-Trip-Time-Varience (x4) in jiffies. This is the + * varience of the smoothed average (but calculated in + * a simpler way than for normal statistical varience + * calculations). + * + * nsp_rxtshift: Backoff counter. Value is zero normally, each time + * a packet is lost is increases by one until an ack + * is received. Its used to index an array of backoff + * multipliers. + */ +#define NSP_MIN_WINDOW 1 +#define NSP_MAX_WINDOW (0x07fe) + unsigned long max_window; + unsigned long snd_window; +#define NSP_INITIAL_SRTT (HZ) + unsigned long nsp_srtt; +#define NSP_INITIAL_RTTVAR (HZ*3) + unsigned long nsp_rttvar; +#define NSP_MAXRXTSHIFT 12 + unsigned long nsp_rxtshift; + + /* + * Output queues, one for data, one for otherdata/linkservice + */ + struct sk_buff_head data_xmit_queue; + struct sk_buff_head other_xmit_queue; + + /* + * Input queue for other data + */ + struct sk_buff_head other_receive_queue; + int other_report; + + /* + * Stuff to do with the slow timer + */ + unsigned long stamp; /* time of last transmit */ + unsigned long persist; + int (*persist_fxn)(struct sock *sk); + unsigned long keepalive; + void (*keepalive_fxn)(struct sock *sk); + + /* + * This stuff is for the fast timer for delayed acks + */ + struct timer_list delack_timer; + int delack_pending; + void (*delack_fxn)(struct sock *sk); + +}; + +static inline struct dn_scp *DN_SK(struct sock *sk) +{ + return (struct dn_scp *)(sk + 1); +} + +/* + * src,dst : Source and Destination DECnet addresses + * hops : Number of hops through the network + * dst_port, src_port : NSP port numbers + * services, info : Useful data extracted from conninit messages + * rt_flags : Routing flags byte + * nsp_flags : NSP layer flags byte + * segsize : Size of segment + * segnum : Number, for data, otherdata and linkservice + * xmit_count : Number of times we've transmitted this skb + * stamp : Time stamp of most recent transmission, used in RTT calculations + * iif: Input interface number + * + * As a general policy, this structure keeps all addresses in network + * byte order, and all else in host byte order. Thus dst, src, dst_port + * and src_port are in network order. All else is in host order. + * + */ +#define DN_SKB_CB(skb) ((struct dn_skb_cb *)(skb)->cb) +struct dn_skb_cb { + unsigned short dst; + unsigned short src; + unsigned short hops; + unsigned short dst_port; + unsigned short src_port; + unsigned char services; + unsigned char info; + unsigned char rt_flags; + unsigned char nsp_flags; + unsigned short segsize; + unsigned short segnum; + unsigned short xmit_count; + unsigned long stamp; + int iif; +}; + +static inline dn_address dn_eth2dn(unsigned char *ethaddr) +{ + return ethaddr[4] | (ethaddr[5] << 8); +} + +static inline dn_address dn_saddr2dn(struct sockaddr_dn *saddr) +{ + return *(dn_address *)saddr->sdn_nodeaddr; +} + +static inline void dn_dn2eth(unsigned char *ethaddr, dn_address addr) +{ + ethaddr[0] = 0xAA; + ethaddr[1] = 0x00; + ethaddr[2] = 0x04; + ethaddr[3] = 0x00; + ethaddr[4] = (unsigned char)(addr & 0xff); + ethaddr[5] = (unsigned char)(addr >> 8); +} + +static inline void dn_sk_ports_copy(struct flowi *fl, struct dn_scp *scp) +{ + fl->uli_u.dnports.sport = scp->addrloc; + fl->uli_u.dnports.dport = scp->addrrem; + fl->uli_u.dnports.objnum = scp->addr.sdn_objnum; + if (fl->uli_u.dnports.objnum == 0) { + fl->uli_u.dnports.objnamel = scp->addr.sdn_objnamel; + memcpy(fl->uli_u.dnports.objname, scp->addr.sdn_objname, 16); + } +} + +extern unsigned dn_mss_from_pmtu(struct net_device *dev, int mtu); + +#define DN_MENUVER_ACC 0x01 +#define DN_MENUVER_USR 0x02 +#define DN_MENUVER_PRX 0x04 +#define DN_MENUVER_UIC 0x08 + +extern struct sock *dn_sklist_find_listener(struct sockaddr_dn *addr); +extern struct sock *dn_find_by_skb(struct sk_buff *skb); +#define DN_ASCBUF_LEN 9 +extern char *dn_addr2asc(dn_address, char *); +extern int dn_destroy_timer(struct sock *sk); + +extern int dn_sockaddr2username(struct sockaddr_dn *addr, unsigned char *buf, unsigned char type); +extern int dn_username2sockaddr(unsigned char *data, int len, struct sockaddr_dn *addr, unsigned char *type); + +extern void dn_start_slow_timer(struct sock *sk); +extern void dn_stop_slow_timer(struct sock *sk); + +extern dn_address decnet_address; +extern int decnet_debug_level; +extern int decnet_time_wait; +extern int decnet_dn_count; +extern int decnet_di_count; +extern int decnet_dr_count; +extern int decnet_no_fc_max_cwnd; + +#endif /* _NET_DN_H */ diff --git a/include/net/dn_dev.h b/include/net/dn_dev.h new file mode 100644 index 000000000000..86e8e86e624a --- /dev/null +++ b/include/net/dn_dev.h @@ -0,0 +1,194 @@ +#ifndef _NET_DN_DEV_H +#define _NET_DN_DEV_H + + +struct dn_dev; + +struct dn_ifaddr { + struct dn_ifaddr *ifa_next; + struct dn_dev *ifa_dev; + dn_address ifa_local; + dn_address ifa_address; + unsigned char ifa_flags; + unsigned char ifa_scope; + char ifa_label[IFNAMSIZ]; +}; + +#define DN_DEV_S_RU 0 /* Run - working normally */ +#define DN_DEV_S_CR 1 /* Circuit Rejected */ +#define DN_DEV_S_DS 2 /* Data Link Start */ +#define DN_DEV_S_RI 3 /* Routing Layer Initialize */ +#define DN_DEV_S_RV 4 /* Routing Layer Verify */ +#define DN_DEV_S_RC 5 /* Routing Layer Complete */ +#define DN_DEV_S_OF 6 /* Off */ +#define DN_DEV_S_HA 7 /* Halt */ + + +/* + * The dn_dev_parms structure contains the set of parameters + * for each device (hence inclusion in the dn_dev structure) + * and an array is used to store the default types of supported + * device (in dn_dev.c). + * + * The type field matches the ARPHRD_ constants and is used in + * searching the list for supported devices when new devices + * come up. + * + * The mode field is used to find out if a device is broadcast, + * multipoint, or pointopoint. Please note that DECnet thinks + * different ways about devices to the rest of the kernel + * so the normal IFF_xxx flags are invalid here. For devices + * which can be any combination of the previously mentioned + * attributes, you can set this on a per device basis by + * installing an up() routine. + * + * The device state field, defines the initial state in which the + * device will come up. In the dn_dev structure, it is the actual + * state. + * + * Things have changed here. I've killed timer1 since it's a user space + * issue for a user space routing deamon to sort out. The kernel does + * not need to be bothered with it. + * + * Timers: + * t2 - Rate limit timer, min time between routing and hello messages + * t3 - Hello timer, send hello messages when it expires + * + * Callbacks: + * up() - Called to initialize device, return value can veto use of + * device with DECnet. + * down() - Called to turn device off when it goes down + * timer3() - Called once for each ifaddr when timer 3 goes off + * + * sysctl - Hook for sysctl things + * + */ +struct dn_dev_parms { + int type; /* ARPHRD_xxx */ + int mode; /* Broadcast, Unicast, Mulitpoint */ +#define DN_DEV_BCAST 1 +#define DN_DEV_UCAST 2 +#define DN_DEV_MPOINT 4 + int state; /* Initial state */ + int forwarding; /* 0=EndNode, 1=L1Router, 2=L2Router */ + unsigned long t2; /* Default value of t2 */ + unsigned long t3; /* Default value of t3 */ + int priority; /* Priority to be a router */ + char *name; /* Name for sysctl */ + int ctl_name; /* Index for sysctl */ + int (*up)(struct net_device *); + void (*down)(struct net_device *); + void (*timer3)(struct net_device *, struct dn_ifaddr *ifa); + void *sysctl; +}; + + +struct dn_dev { + struct dn_ifaddr *ifa_list; + struct net_device *dev; + struct dn_dev_parms parms; + char use_long; + struct timer_list timer; + unsigned long t3; + struct neigh_parms *neigh_parms; + unsigned char addr[ETH_ALEN]; + struct neighbour *router; /* Default router on circuit */ + struct neighbour *peer; /* Peer on pointopoint links */ + unsigned long uptime; /* Time device went up in jiffies */ +}; + +struct dn_short_packet +{ + unsigned char msgflg __attribute__((packed)); + unsigned short dstnode __attribute__((packed)); + unsigned short srcnode __attribute__((packed)); + unsigned char forward __attribute__((packed)); +}; + +struct dn_long_packet +{ + unsigned char msgflg __attribute__((packed)); + unsigned char d_area __attribute__((packed)); + unsigned char d_subarea __attribute__((packed)); + unsigned char d_id[6] __attribute__((packed)); + unsigned char s_area __attribute__((packed)); + unsigned char s_subarea __attribute__((packed)); + unsigned char s_id[6] __attribute__((packed)); + unsigned char nl2 __attribute__((packed)); + unsigned char visit_ct __attribute__((packed)); + unsigned char s_class __attribute__((packed)); + unsigned char pt __attribute__((packed)); +}; + +/*------------------------- DRP - Routing messages ---------------------*/ + +struct endnode_hello_message +{ + unsigned char msgflg __attribute__((packed)); + unsigned char tiver[3] __attribute__((packed)); + unsigned char id[6] __attribute__((packed)); + unsigned char iinfo __attribute__((packed)); + unsigned short blksize __attribute__((packed)); + unsigned char area __attribute__((packed)); + unsigned char seed[8] __attribute__((packed)); + unsigned char neighbor[6] __attribute__((packed)); + unsigned short timer __attribute__((packed)); + unsigned char mpd __attribute__((packed)); + unsigned char datalen __attribute__((packed)); + unsigned char data[2] __attribute__((packed)); +}; + +struct rtnode_hello_message +{ + unsigned char msgflg __attribute__((packed)); + unsigned char tiver[3] __attribute__((packed)); + unsigned char id[6] __attribute__((packed)); + unsigned char iinfo __attribute__((packed)); + unsigned short blksize __attribute__((packed)); + unsigned char priority __attribute__((packed)); + unsigned char area __attribute__((packed)); + unsigned short timer __attribute__((packed)); + unsigned char mpd __attribute__((packed)); +}; + + +extern void dn_dev_init(void); +extern void dn_dev_cleanup(void); + +extern int dn_dev_ioctl(unsigned int cmd, void __user *arg); + +extern void dn_dev_devices_off(void); +extern void dn_dev_devices_on(void); + +extern void dn_dev_init_pkt(struct sk_buff *skb); +extern void dn_dev_veri_pkt(struct sk_buff *skb); +extern void dn_dev_hello(struct sk_buff *skb); + +extern void dn_dev_up(struct net_device *); +extern void dn_dev_down(struct net_device *); + +extern int dn_dev_set_default(struct net_device *dev, int force); +extern struct net_device *dn_dev_get_default(void); +extern int dn_dev_bind_default(dn_address *addr); + +extern int register_dnaddr_notifier(struct notifier_block *nb); +extern int unregister_dnaddr_notifier(struct notifier_block *nb); + +static inline int dn_dev_islocal(struct net_device *dev, dn_address addr) +{ + struct dn_dev *dn_db = dev->dn_ptr; + struct dn_ifaddr *ifa; + + if (dn_db == NULL) { + printk(KERN_DEBUG "dn_dev_islocal: Called for non DECnet device\n"); + return 0; + } + + for(ifa = dn_db->ifa_list; ifa; ifa = ifa->ifa_next) + if ((addr ^ ifa->ifa_local) == 0) + return 1; + + return 0; +} + +#endif /* _NET_DN_DEV_H */ diff --git a/include/net/dn_fib.h b/include/net/dn_fib.h new file mode 100644 index 000000000000..cd3c96d9601b --- /dev/null +++ b/include/net/dn_fib.h @@ -0,0 +1,204 @@ +#ifndef _NET_DN_FIB_H +#define _NET_DN_FIB_H + +/* WARNING: The ordering of these elements must match ordering + * of RTA_* rtnetlink attribute numbers. + */ +struct dn_kern_rta +{ + void *rta_dst; + void *rta_src; + int *rta_iif; + int *rta_oif; + void *rta_gw; + u32 *rta_priority; + void *rta_prefsrc; + struct rtattr *rta_mx; + struct rtattr *rta_mp; + unsigned char *rta_protoinfo; + u32 *rta_flow; + struct rta_cacheinfo *rta_ci; + struct rta_session *rta_sess; +}; + +struct dn_fib_res { + struct dn_fib_rule *r; + struct dn_fib_info *fi; + unsigned char prefixlen; + unsigned char nh_sel; + unsigned char type; + unsigned char scope; +}; + +struct dn_fib_nh { + struct net_device *nh_dev; + unsigned nh_flags; + unsigned char nh_scope; + int nh_weight; + int nh_power; + int nh_oif; + u32 nh_gw; +}; + +struct dn_fib_info { + struct dn_fib_info *fib_next; + struct dn_fib_info *fib_prev; + int fib_treeref; + atomic_t fib_clntref; + int fib_dead; + unsigned fib_flags; + int fib_protocol; + dn_address fib_prefsrc; + __u32 fib_priority; + __u32 fib_metrics[RTAX_MAX]; +#define dn_fib_mtu fib_metrics[RTAX_MTU-1] +#define dn_fib_window fib_metrics[RTAX_WINDOW-1] +#define dn_fib_rtt fib_metrics[RTAX_RTT-1] +#define dn_fib_advmss fib_metrics[RTAX_ADVMSS-1] + int fib_nhs; + int fib_power; + struct dn_fib_nh fib_nh[0]; +#define dn_fib_dev fib_nh[0].nh_dev +}; + + +#define DN_FIB_RES_RESET(res) ((res).nh_sel = 0) +#define DN_FIB_RES_NH(res) ((res).fi->fib_nh[(res).nh_sel]) + +#define DN_FIB_RES_PREFSRC(res) ((res).fi->fib_prefsrc ? : __dn_fib_res_prefsrc(&res)) +#define DN_FIB_RES_GW(res) (DN_FIB_RES_NH(res).nh_gw) +#define DN_FIB_RES_DEV(res) (DN_FIB_RES_NH(res).nh_dev) +#define DN_FIB_RES_OIF(res) (DN_FIB_RES_NH(res).nh_oif) + +typedef struct { + u16 datum; +} dn_fib_key_t; + +typedef struct { + u16 datum; +} dn_fib_hash_t; + +typedef struct { + u16 datum; +} dn_fib_idx_t; + +struct dn_fib_node { + struct dn_fib_node *fn_next; + struct dn_fib_info *fn_info; +#define DN_FIB_INFO(f) ((f)->fn_info) + dn_fib_key_t fn_key; + u8 fn_type; + u8 fn_scope; + u8 fn_state; +}; + + +struct dn_fib_table { + int n; + + int (*insert)(struct dn_fib_table *t, struct rtmsg *r, + struct dn_kern_rta *rta, struct nlmsghdr *n, + struct netlink_skb_parms *req); + int (*delete)(struct dn_fib_table *t, struct rtmsg *r, + struct dn_kern_rta *rta, struct nlmsghdr *n, + struct netlink_skb_parms *req); + int (*lookup)(struct dn_fib_table *t, const struct flowi *fl, + struct dn_fib_res *res); + int (*flush)(struct dn_fib_table *t); + int (*dump)(struct dn_fib_table *t, struct sk_buff *skb, struct netlink_callback *cb); + + unsigned char data[0]; +}; + +#ifdef CONFIG_DECNET_ROUTER +/* + * dn_fib.c + */ +extern void dn_fib_init(void); +extern void dn_fib_cleanup(void); + +extern int dn_fib_ioctl(struct socket *sock, unsigned int cmd, + unsigned long arg); +extern struct dn_fib_info *dn_fib_create_info(const struct rtmsg *r, + struct dn_kern_rta *rta, + const struct nlmsghdr *nlh, int *errp); +extern int dn_fib_semantic_match(int type, struct dn_fib_info *fi, + const struct flowi *fl, + struct dn_fib_res *res); +extern void dn_fib_release_info(struct dn_fib_info *fi); +extern u16 dn_fib_get_attr16(struct rtattr *attr, int attrlen, int type); +extern void dn_fib_flush(void); +extern void dn_fib_select_multipath(const struct flowi *fl, + struct dn_fib_res *res); +extern int dn_fib_sync_down(dn_address local, struct net_device *dev, + int force); +extern int dn_fib_sync_up(struct net_device *dev); + +/* + * dn_tables.c + */ +extern struct dn_fib_table *dn_fib_get_table(int n, int creat); +extern struct dn_fib_table *dn_fib_empty_table(void); +extern void dn_fib_table_init(void); +extern void dn_fib_table_cleanup(void); + +/* + * dn_rules.c + */ +extern void dn_fib_rules_init(void); +extern void dn_fib_rules_cleanup(void); +extern void dn_fib_rule_put(struct dn_fib_rule *); +extern __u16 dn_fib_rules_policy(__u16 saddr, struct dn_fib_res *res, unsigned *flags); +extern unsigned dnet_addr_type(__u16 addr); +extern int dn_fib_lookup(const struct flowi *fl, struct dn_fib_res *res); + +/* + * rtnetlink interface + */ +extern int dn_fib_rtm_delroute(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg); +extern int dn_fib_rtm_newroute(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg); +extern int dn_fib_dump(struct sk_buff *skb, struct netlink_callback *cb); + +extern int dn_fib_rtm_delrule(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg); +extern int dn_fib_rtm_newrule(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg); +extern int dn_fib_dump_rules(struct sk_buff *skb, struct netlink_callback *cb); + +extern void dn_fib_free_info(struct dn_fib_info *fi); + +static inline void dn_fib_info_put(struct dn_fib_info *fi) +{ + if (atomic_dec_and_test(&fi->fib_clntref)) + dn_fib_free_info(fi); +} + +static inline void dn_fib_res_put(struct dn_fib_res *res) +{ + if (res->fi) + dn_fib_info_put(res->fi); + if (res->r) + dn_fib_rule_put(res->r); +} + +extern struct dn_fib_table *dn_fib_tables[]; + +#else /* Endnode */ + +#define dn_fib_init() do { } while(0) +#define dn_fib_cleanup() do { } while(0) + +#define dn_fib_lookup(fl, res) (-ESRCH) +#define dn_fib_info_put(fi) do { } while(0) +#define dn_fib_select_multipath(fl, res) do { } while(0) +#define dn_fib_rules_policy(saddr,res,flags) (0) +#define dn_fib_res_put(res) do { } while(0) + +#endif /* CONFIG_DECNET_ROUTER */ + +static inline u16 dnet_make_mask(int n) +{ + if (n) + return htons(~((1<<(16-n))-1)); + return 0; +} + +#endif /* _NET_DN_FIB_H */ diff --git a/include/net/dn_neigh.h b/include/net/dn_neigh.h new file mode 100644 index 000000000000..4b1eb038d637 --- /dev/null +++ b/include/net/dn_neigh.h @@ -0,0 +1,28 @@ +#ifndef _NET_DN_NEIGH_H +#define _NET_DN_NEIGH_H + +/* + * The position of the first two fields of + * this structure are critical - SJW + */ +struct dn_neigh { + struct neighbour n; + dn_address addr; + unsigned long flags; +#define DN_NDFLAG_R1 0x0001 /* Router L1 */ +#define DN_NDFLAG_R2 0x0002 /* Router L2 */ +#define DN_NDFLAG_P3 0x0004 /* Phase III Node */ + unsigned long blksize; + unsigned char priority; +}; + +extern void dn_neigh_init(void); +extern void dn_neigh_cleanup(void); +extern int dn_neigh_router_hello(struct sk_buff *skb); +extern int dn_neigh_endnode_hello(struct sk_buff *skb); +extern void dn_neigh_pointopoint_hello(struct sk_buff *skb); +extern int dn_neigh_elist(struct net_device *dev, unsigned char *ptr, int n); + +extern struct neigh_table dn_neigh_table; + +#endif /* _NET_DN_NEIGH_H */ diff --git a/include/net/dn_nsp.h b/include/net/dn_nsp.h new file mode 100644 index 000000000000..6bbeafa73e8b --- /dev/null +++ b/include/net/dn_nsp.h @@ -0,0 +1,209 @@ +#ifndef _NET_DN_NSP_H +#define _NET_DN_NSP_H +/****************************************************************************** + (c) 1995-1998 E.M. Serrat emserrat@geocities.com + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. +*******************************************************************************/ +/* dn_nsp.c functions prototyping */ + +extern void dn_nsp_send_data_ack(struct sock *sk); +extern void dn_nsp_send_oth_ack(struct sock *sk); +extern void dn_nsp_delayed_ack(struct sock *sk); +extern void dn_send_conn_ack(struct sock *sk); +extern void dn_send_conn_conf(struct sock *sk, int gfp); +extern void dn_nsp_send_disc(struct sock *sk, unsigned char type, + unsigned short reason, int gfp); +extern void dn_nsp_return_disc(struct sk_buff *skb, unsigned char type, + unsigned short reason); +extern void dn_nsp_send_link(struct sock *sk, unsigned char lsflags, char fcval); +extern void dn_nsp_send_conninit(struct sock *sk, unsigned char flags); + +extern void dn_nsp_output(struct sock *sk); +extern int dn_nsp_check_xmit_queue(struct sock *sk, struct sk_buff *skb, struct sk_buff_head *q, unsigned short acknum); +extern void dn_nsp_queue_xmit(struct sock *sk, struct sk_buff *skb, int gfp, int oob); +extern unsigned long dn_nsp_persist(struct sock *sk); +extern int dn_nsp_xmit_timeout(struct sock *sk); + +extern int dn_nsp_rx(struct sk_buff *); +extern int dn_nsp_backlog_rcv(struct sock *sk, struct sk_buff *skb); + +extern struct sk_buff *dn_alloc_skb(struct sock *sk, int size, int pri); +extern struct sk_buff *dn_alloc_send_skb(struct sock *sk, size_t *size, int noblock, long timeo, int *err); + +#define NSP_REASON_OK 0 /* No error */ +#define NSP_REASON_NR 1 /* No resources */ +#define NSP_REASON_UN 2 /* Unrecognised node name */ +#define NSP_REASON_SD 3 /* Node shutting down */ +#define NSP_REASON_ID 4 /* Invalid destination end user */ +#define NSP_REASON_ER 5 /* End user lacks resources */ +#define NSP_REASON_OB 6 /* Object too busy */ +#define NSP_REASON_US 7 /* Unspecified error */ +#define NSP_REASON_TP 8 /* Third-Party abort */ +#define NSP_REASON_EA 9 /* End user has aborted the link */ +#define NSP_REASON_IF 10 /* Invalid node name format */ +#define NSP_REASON_LS 11 /* Local node shutdown */ +#define NSP_REASON_LL 32 /* Node lacks logical-link resources */ +#define NSP_REASON_LE 33 /* End user lacks logical-link resources */ +#define NSP_REASON_UR 34 /* Unacceptable RQSTRID or PASSWORD field */ +#define NSP_REASON_UA 36 /* Unacceptable ACCOUNT field */ +#define NSP_REASON_TM 38 /* End user timed out logical link */ +#define NSP_REASON_NU 39 /* Node unreachable */ +#define NSP_REASON_NL 41 /* No-link message */ +#define NSP_REASON_DC 42 /* Disconnect confirm */ +#define NSP_REASON_IO 43 /* Image data field overflow */ + +#define NSP_DISCINIT 0x38 +#define NSP_DISCCONF 0x48 + +/*------------------------- NSP - messages ------------------------------*/ +/* Data Messages */ +/*---------------*/ + +/* Data Messages (data segment/interrupt/link service) */ + +struct nsp_data_seg_msg +{ + unsigned char msgflg __attribute__((packed)); + unsigned short dstaddr __attribute__((packed)); + unsigned short srcaddr __attribute__((packed)); +}; + +struct nsp_data_opt_msg +{ + unsigned short acknum __attribute__((packed)); + unsigned short segnum __attribute__((packed)); + unsigned short lsflgs __attribute__((packed)); +}; + +struct nsp_data_opt_msg1 +{ + unsigned short acknum __attribute__((packed)); + unsigned short segnum __attribute__((packed)); +}; + + +/* Acknowledgment Message (data/other data) */ +struct nsp_data_ack_msg +{ + unsigned char msgflg __attribute__((packed)); + unsigned short dstaddr __attribute__((packed)); + unsigned short srcaddr __attribute__((packed)); + unsigned short acknum __attribute__((packed)); +}; + +/* Connect Acknowledgment Message */ +struct nsp_conn_ack_msg +{ + unsigned char msgflg __attribute__((packed)); + unsigned short dstaddr __attribute__((packed)); +}; + + +/* Connect Initiate/Retransmit Initiate/Connect Confirm */ +struct nsp_conn_init_msg +{ + unsigned char msgflg __attribute__((packed)); +#define NSP_CI 0x18 /* Connect Initiate */ +#define NSP_RCI 0x68 /* Retrans. Conn Init */ + unsigned short dstaddr __attribute__((packed)); + unsigned short srcaddr __attribute__((packed)); + unsigned char services __attribute__((packed)); +#define NSP_FC_NONE 0x00 /* Flow Control None */ +#define NSP_FC_SRC 0x04 /* Seg Req. Count */ +#define NSP_FC_SCMC 0x08 /* Sess. Control Mess */ +#define NSP_FC_MASK 0x0c /* FC type mask */ + unsigned char info __attribute__((packed)); + unsigned short segsize __attribute__((packed)); +}; + +/* Disconnect Initiate/Disconnect Confirm */ +struct nsp_disconn_init_msg +{ + unsigned char msgflg __attribute__((packed)); + unsigned short dstaddr __attribute__((packed)); + unsigned short srcaddr __attribute__((packed)); + unsigned short reason __attribute__((packed)); +}; + + + +struct srcobj_fmt +{ + char format __attribute__((packed)); + unsigned char task __attribute__((packed)); + unsigned short grpcode __attribute__((packed)); + unsigned short usrcode __attribute__((packed)); + char dlen __attribute__((packed)); +}; + +/* + * A collection of functions for manipulating the sequence + * numbers used in NSP. Similar in operation to the functions + * of the same name in TCP. + */ +static __inline__ int dn_before(unsigned short seq1, unsigned short seq2) +{ + seq1 &= 0x0fff; + seq2 &= 0x0fff; + + return (int)((seq1 - seq2) & 0x0fff) > 2048; +} + + +static __inline__ int dn_after(unsigned short seq1, unsigned short seq2) +{ + seq1 &= 0x0fff; + seq2 &= 0x0fff; + + return (int)((seq2 - seq1) & 0x0fff) > 2048; +} + +static __inline__ int dn_equal(unsigned short seq1, unsigned short seq2) +{ + return ((seq1 ^ seq2) & 0x0fff) == 0; +} + +static __inline__ int dn_before_or_equal(unsigned short seq1, unsigned short seq2) +{ + return (dn_before(seq1, seq2) || dn_equal(seq1, seq2)); +} + +static __inline__ void seq_add(unsigned short *seq, unsigned short off) +{ + (*seq) += off; + (*seq) &= 0x0fff; +} + +static __inline__ int seq_next(unsigned short seq1, unsigned short seq2) +{ + return dn_equal(seq1 + 1, seq2); +} + +/* + * Can we delay the ack ? + */ +static __inline__ int sendack(unsigned short seq) +{ + return (int)((seq & 0x1000) ? 0 : 1); +} + +/* + * Is socket congested ? + */ +static __inline__ int dn_congested(struct sock *sk) +{ + return atomic_read(&sk->sk_rmem_alloc) > (sk->sk_rcvbuf >> 1); +} + +#define DN_MAX_NSP_DATA_HEADER (11) + +#endif /* _NET_DN_NSP_H */ diff --git a/include/net/dn_route.h b/include/net/dn_route.h new file mode 100644 index 000000000000..d084721db198 --- /dev/null +++ b/include/net/dn_route.h @@ -0,0 +1,112 @@ +#ifndef _NET_DN_ROUTE_H +#define _NET_DN_ROUTE_H + +/****************************************************************************** + (c) 1995-1998 E.M. Serrat emserrat@geocities.com + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. +*******************************************************************************/ + +extern struct sk_buff *dn_alloc_skb(struct sock *sk, int size, int pri); +extern int dn_route_output_sock(struct dst_entry **pprt, struct flowi *, struct sock *sk, int flags); +extern int dn_cache_dump(struct sk_buff *skb, struct netlink_callback *cb); +extern int dn_cache_getroute(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg); +extern void dn_rt_cache_flush(int delay); + +/* Masks for flags field */ +#define DN_RT_F_PID 0x07 /* Mask for packet type */ +#define DN_RT_F_PF 0x80 /* Padding Follows */ +#define DN_RT_F_VER 0x40 /* Version =0 discard packet if ==1 */ +#define DN_RT_F_IE 0x20 /* Intra Ethernet, Reserved in short pkt */ +#define DN_RT_F_RTS 0x10 /* Packet is being returned to sender */ +#define DN_RT_F_RQR 0x08 /* Return packet to sender upon non-delivery */ + +/* Mask for types of routing packets */ +#define DN_RT_PKT_MSK 0x06 +/* Types of routing packets */ +#define DN_RT_PKT_SHORT 0x02 /* Short routing packet */ +#define DN_RT_PKT_LONG 0x06 /* Long routing packet */ + +/* Mask for control/routing selection */ +#define DN_RT_PKT_CNTL 0x01 /* Set to 1 if a control packet */ +/* Types of control packets */ +#define DN_RT_CNTL_MSK 0x0f /* Mask for control packets */ +#define DN_RT_PKT_INIT 0x01 /* Initialisation packet */ +#define DN_RT_PKT_VERI 0x03 /* Verification Message */ +#define DN_RT_PKT_HELO 0x05 /* Hello and Test Message */ +#define DN_RT_PKT_L1RT 0x07 /* Level 1 Routing Message */ +#define DN_RT_PKT_L2RT 0x09 /* Level 2 Routing Message */ +#define DN_RT_PKT_ERTH 0x0b /* Ethernet Router Hello */ +#define DN_RT_PKT_EEDH 0x0d /* Ethernet EndNode Hello */ + +/* Values for info field in hello message */ +#define DN_RT_INFO_TYPE 0x03 /* Type mask */ +#define DN_RT_INFO_L1RT 0x02 /* L1 Router */ +#define DN_RT_INFO_L2RT 0x01 /* L2 Router */ +#define DN_RT_INFO_ENDN 0x03 /* EndNode */ +#define DN_RT_INFO_VERI 0x04 /* Verification Reqd. */ +#define DN_RT_INFO_RJCT 0x08 /* Reject Flag, Reserved */ +#define DN_RT_INFO_VFLD 0x10 /* Verification Failed, Reserved */ +#define DN_RT_INFO_NOML 0x20 /* No Multicast traffic accepted */ +#define DN_RT_INFO_BLKR 0x40 /* Blocking Requested */ + +/* + * The fl structure is what we used to look up the route. + * The rt_saddr & rt_daddr entries are the same as key.saddr & key.daddr + * except for local input routes, where the rt_saddr = fl.fld_dst and + * rt_daddr = fl.fld_src to allow the route to be used for returning + * packets to the originating host. + */ +struct dn_route { + union { + struct dst_entry dst; + struct dn_route *rt_next; + } u; + + __u16 rt_saddr; + __u16 rt_daddr; + __u16 rt_gateway; + __u16 rt_local_src; /* Source used for forwarding packets */ + __u16 rt_src_map; + __u16 rt_dst_map; + + unsigned rt_flags; + unsigned rt_type; + + struct flowi fl; +}; + +extern void dn_route_init(void); +extern void dn_route_cleanup(void); + +#include <net/sock.h> +#include <linux/if_arp.h> + +static inline void dn_rt_send(struct sk_buff *skb) +{ + dev_queue_xmit(skb); +} + +static inline void dn_rt_finish_output(struct sk_buff *skb, char *dst, char *src) +{ + struct net_device *dev = skb->dev; + + if ((dev->type != ARPHRD_ETHER) && (dev->type != ARPHRD_LOOPBACK)) + dst = NULL; + + if (!dev->hard_header || (dev->hard_header(skb, dev, ETH_P_DNA_RT, + dst, src, skb->len) >= 0)) + dn_rt_send(skb); + else + kfree_skb(skb); +} + +#endif /* _NET_DN_ROUTE_H */ diff --git a/include/net/dsfield.h b/include/net/dsfield.h new file mode 100644 index 000000000000..a79c9e075f7f --- /dev/null +++ b/include/net/dsfield.h @@ -0,0 +1,54 @@ +/* include/net/dsfield.h - Manipulation of the Differentiated Services field */ + +/* Written 1998-2000 by Werner Almesberger, EPFL ICA */ + + +#ifndef __NET_DSFIELD_H +#define __NET_DSFIELD_H + +#include <linux/types.h> +#include <linux/ip.h> +#include <linux/ipv6.h> +#include <asm/byteorder.h> + + +static inline __u8 ipv4_get_dsfield(struct iphdr *iph) +{ + return iph->tos; +} + + +static inline __u8 ipv6_get_dsfield(struct ipv6hdr *ipv6h) +{ + return ntohs(*(__u16 *) ipv6h) >> 4; +} + + +static inline void ipv4_change_dsfield(struct iphdr *iph,__u8 mask, + __u8 value) +{ + __u32 check = ntohs(iph->check); + __u8 dsfield; + + dsfield = (iph->tos & mask) | value; + check += iph->tos; + if ((check+1) >> 16) check = (check+1) & 0xffff; + check -= dsfield; + check += check >> 16; /* adjust carry */ + iph->check = htons(check); + iph->tos = dsfield; +} + + +static inline void ipv6_change_dsfield(struct ipv6hdr *ipv6h,__u8 mask, + __u8 value) +{ + __u16 tmp; + + tmp = ntohs(*(__u16 *) ipv6h); + tmp = (tmp & ((mask << 4) | 0xf00f)) | (value << 4); + *(__u16 *) ipv6h = htons(tmp); +} + + +#endif diff --git a/include/net/dst.h b/include/net/dst.h new file mode 100644 index 000000000000..50adc9136530 --- /dev/null +++ b/include/net/dst.h @@ -0,0 +1,279 @@ +/* + * net/dst.h Protocol independent destination cache definitions. + * + * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> + * + */ + +#ifndef _NET_DST_H +#define _NET_DST_H + +#include <linux/config.h> +#include <linux/rtnetlink.h> +#include <linux/rcupdate.h> +#include <linux/jiffies.h> +#include <net/neighbour.h> +#include <asm/processor.h> + +/* + * 0 - no debugging messages + * 1 - rare events and bugs (default) + * 2 - trace mode. + */ +#define RT_CACHE_DEBUG 0 + +#define DST_GC_MIN (HZ/10) +#define DST_GC_INC (HZ/2) +#define DST_GC_MAX (120*HZ) + +/* Each dst_entry has reference count and sits in some parent list(s). + * When it is removed from parent list, it is "freed" (dst_free). + * After this it enters dead state (dst->obsolete > 0) and if its refcnt + * is zero, it can be destroyed immediately, otherwise it is added + * to gc list and garbage collector periodically checks the refcnt. + */ + +struct sk_buff; + +struct dst_entry +{ + struct dst_entry *next; + atomic_t __refcnt; /* client references */ + int __use; + struct dst_entry *child; + struct net_device *dev; + int obsolete; + int flags; +#define DST_HOST 1 +#define DST_NOXFRM 2 +#define DST_NOPOLICY 4 +#define DST_NOHASH 8 +#define DST_BALANCED 0x10 + unsigned long lastuse; + unsigned long expires; + + unsigned short header_len; /* more space at head required */ + unsigned short trailer_len; /* space to reserve at tail */ + + u32 metrics[RTAX_MAX]; + struct dst_entry *path; + + unsigned long rate_last; /* rate limiting for ICMP */ + unsigned long rate_tokens; + + int error; + + struct neighbour *neighbour; + struct hh_cache *hh; + struct xfrm_state *xfrm; + + int (*input)(struct sk_buff*); + int (*output)(struct sk_buff*); + +#ifdef CONFIG_NET_CLS_ROUTE + __u32 tclassid; +#endif + + struct dst_ops *ops; + struct rcu_head rcu_head; + + char info[0]; +}; + + +struct dst_ops +{ + unsigned short family; + unsigned short protocol; + unsigned gc_thresh; + + int (*gc)(void); + struct dst_entry * (*check)(struct dst_entry *, __u32 cookie); + void (*destroy)(struct dst_entry *); + void (*ifdown)(struct dst_entry *, + struct net_device *dev, int how); + struct dst_entry * (*negative_advice)(struct dst_entry *); + void (*link_failure)(struct sk_buff *); + void (*update_pmtu)(struct dst_entry *dst, u32 mtu); + int (*get_mss)(struct dst_entry *dst, u32 mtu); + int entry_size; + + atomic_t entries; + kmem_cache_t *kmem_cachep; +}; + +#ifdef __KERNEL__ + +static inline u32 +dst_metric(const struct dst_entry *dst, int metric) +{ + return dst->metrics[metric-1]; +} + +static inline u32 dst_mtu(const struct dst_entry *dst) +{ + u32 mtu = dst_metric(dst, RTAX_MTU); + /* + * Alexey put it here, so ask him about it :) + */ + barrier(); + return mtu; +} + +static inline u32 +dst_allfrag(const struct dst_entry *dst) +{ + int ret = dst_metric(dst, RTAX_FEATURES) & RTAX_FEATURE_ALLFRAG; + /* Yes, _exactly_. This is paranoia. */ + barrier(); + return ret; +} + +static inline int +dst_metric_locked(struct dst_entry *dst, int metric) +{ + return dst_metric(dst, RTAX_LOCK) & (1<<metric); +} + +static inline void dst_hold(struct dst_entry * dst) +{ + atomic_inc(&dst->__refcnt); +} + +static inline +struct dst_entry * dst_clone(struct dst_entry * dst) +{ + if (dst) + atomic_inc(&dst->__refcnt); + return dst; +} + +static inline +void dst_release(struct dst_entry * dst) +{ + if (dst) { + WARN_ON(atomic_read(&dst->__refcnt) < 1); + smp_mb__before_atomic_dec(); + atomic_dec(&dst->__refcnt); + } +} + +/* Children define the path of the packet through the + * Linux networking. Thus, destinations are stackable. + */ + +static inline struct dst_entry *dst_pop(struct dst_entry *dst) +{ + struct dst_entry *child = dst_clone(dst->child); + + dst_release(dst); + return child; +} + +extern void * dst_alloc(struct dst_ops * ops); +extern void __dst_free(struct dst_entry * dst); +extern struct dst_entry *dst_destroy(struct dst_entry * dst); + +static inline void dst_free(struct dst_entry * dst) +{ + if (dst->obsolete > 1) + return; + if (!atomic_read(&dst->__refcnt)) { + dst = dst_destroy(dst); + if (!dst) + return; + } + __dst_free(dst); +} + +static inline void dst_rcu_free(struct rcu_head *head) +{ + struct dst_entry *dst = container_of(head, struct dst_entry, rcu_head); + dst_free(dst); +} + +static inline void dst_confirm(struct dst_entry *dst) +{ + if (dst) + neigh_confirm(dst->neighbour); +} + +static inline void dst_negative_advice(struct dst_entry **dst_p) +{ + struct dst_entry * dst = *dst_p; + if (dst && dst->ops->negative_advice) + *dst_p = dst->ops->negative_advice(dst); +} + +static inline void dst_link_failure(struct sk_buff *skb) +{ + struct dst_entry * dst = skb->dst; + if (dst && dst->ops && dst->ops->link_failure) + dst->ops->link_failure(skb); +} + +static inline void dst_set_expires(struct dst_entry *dst, int timeout) +{ + unsigned long expires = jiffies + timeout; + + if (expires == 0) + expires = 1; + + if (dst->expires == 0 || time_before(expires, dst->expires)) + dst->expires = expires; +} + +/* Output packet to network from transport. */ +static inline int dst_output(struct sk_buff *skb) +{ + int err; + + for (;;) { + err = skb->dst->output(skb); + + if (likely(err == 0)) + return err; + if (unlikely(err != NET_XMIT_BYPASS)) + return err; + } +} + +/* Input packet from network to transport. */ +static inline int dst_input(struct sk_buff *skb) +{ + int err; + + for (;;) { + err = skb->dst->input(skb); + + if (likely(err == 0)) + return err; + /* Oh, Jamal... Seems, I will not forgive you this mess. :-) */ + if (unlikely(err != NET_XMIT_BYPASS)) + return err; + } +} + +static inline struct dst_entry *dst_check(struct dst_entry *dst, u32 cookie) +{ + if (dst->obsolete) + dst = dst->ops->check(dst, cookie); + return dst; +} + +extern void dst_init(void); + +struct flowi; +#ifndef CONFIG_XFRM +static inline int xfrm_lookup(struct dst_entry **dst_p, struct flowi *fl, + struct sock *sk, int flags) +{ + return 0; +} +#else +extern int xfrm_lookup(struct dst_entry **dst_p, struct flowi *fl, + struct sock *sk, int flags); +#endif +#endif + +#endif /* _NET_DST_H */ diff --git a/include/net/esp.h b/include/net/esp.h new file mode 100644 index 000000000000..90cd94fad7d9 --- /dev/null +++ b/include/net/esp.h @@ -0,0 +1,59 @@ +#ifndef _NET_ESP_H +#define _NET_ESP_H + +#include <net/xfrm.h> +#include <asm/scatterlist.h> + +#define ESP_NUM_FAST_SG 4 + +struct esp_data +{ + struct scatterlist sgbuf[ESP_NUM_FAST_SG]; + + /* Confidentiality */ + struct { + u8 *key; /* Key */ + int key_len; /* Key length */ + u8 *ivec; /* ivec buffer */ + /* ivlen is offset from enc_data, where encrypted data start. + * It is logically different of crypto_tfm_alg_ivsize(tfm). + * We assume that it is either zero (no ivec), or + * >= crypto_tfm_alg_ivsize(tfm). */ + int ivlen; + int padlen; /* 0..255 */ + struct crypto_tfm *tfm; /* crypto handle */ + } conf; + + /* Integrity. It is active when icv_full_len != 0 */ + struct { + u8 *key; /* Key */ + int key_len; /* Length of the key */ + u8 *work_icv; + int icv_full_len; + int icv_trunc_len; + void (*icv)(struct esp_data*, + struct sk_buff *skb, + int offset, int len, u8 *icv); + struct crypto_tfm *tfm; + } auth; +}; + +extern int skb_to_sgvec(struct sk_buff *skb, struct scatterlist *sg, int offset, int len); +extern int skb_cow_data(struct sk_buff *skb, int tailbits, struct sk_buff **trailer); +extern void *pskb_put(struct sk_buff *skb, struct sk_buff *tail, int len); + +static inline void +esp_hmac_digest(struct esp_data *esp, struct sk_buff *skb, int offset, + int len, u8 *auth_data) +{ + struct crypto_tfm *tfm = esp->auth.tfm; + char *icv = esp->auth.work_icv; + + memset(auth_data, 0, esp->auth.icv_trunc_len); + crypto_hmac_init(tfm, esp->auth.key, &esp->auth.key_len); + skb_icv_walk(skb, tfm, offset, len, crypto_hmac_update); + crypto_hmac_final(tfm, esp->auth.key, &esp->auth.key_len, icv); + memcpy(auth_data, icv, esp->auth.icv_trunc_len); +} + +#endif diff --git a/include/net/flow.h b/include/net/flow.h new file mode 100644 index 000000000000..9a5c94b1a0ec --- /dev/null +++ b/include/net/flow.h @@ -0,0 +1,95 @@ +/* + * + * Generic internet FLOW. + * + */ + +#ifndef _NET_FLOW_H +#define _NET_FLOW_H + +#include <linux/in6.h> +#include <asm/atomic.h> + +struct flowi { + int oif; + int iif; + + union { + struct { + __u32 daddr; + __u32 saddr; + __u32 fwmark; + __u8 tos; + __u8 scope; + } ip4_u; + + struct { + struct in6_addr daddr; + struct in6_addr saddr; + __u32 flowlabel; + } ip6_u; + + struct { + __u16 daddr; + __u16 saddr; + __u32 fwmark; + __u8 scope; + } dn_u; + } nl_u; +#define fld_dst nl_u.dn_u.daddr +#define fld_src nl_u.dn_u.saddr +#define fld_fwmark nl_u.dn_u.fwmark +#define fld_scope nl_u.dn_u.scope +#define fl6_dst nl_u.ip6_u.daddr +#define fl6_src nl_u.ip6_u.saddr +#define fl6_flowlabel nl_u.ip6_u.flowlabel +#define fl4_dst nl_u.ip4_u.daddr +#define fl4_src nl_u.ip4_u.saddr +#define fl4_fwmark nl_u.ip4_u.fwmark +#define fl4_tos nl_u.ip4_u.tos +#define fl4_scope nl_u.ip4_u.scope + + __u8 proto; + __u8 flags; +#define FLOWI_FLAG_MULTIPATHOLDROUTE 0x01 + union { + struct { + __u16 sport; + __u16 dport; + } ports; + + struct { + __u8 type; + __u8 code; + } icmpt; + + struct { + __u16 sport; + __u16 dport; + __u8 objnum; + __u8 objnamel; /* Not 16 bits since max val is 16 */ + __u8 objname[16]; /* Not zero terminated */ + } dnports; + + __u32 spi; + } uli_u; +#define fl_ip_sport uli_u.ports.sport +#define fl_ip_dport uli_u.ports.dport +#define fl_icmp_type uli_u.icmpt.type +#define fl_icmp_code uli_u.icmpt.code +#define fl_ipsec_spi uli_u.spi +} __attribute__((__aligned__(BITS_PER_LONG/8))); + +#define FLOW_DIR_IN 0 +#define FLOW_DIR_OUT 1 +#define FLOW_DIR_FWD 2 + +typedef void (*flow_resolve_t)(struct flowi *key, u16 family, u8 dir, + void **objp, atomic_t **obj_refp); + +extern void *flow_cache_lookup(struct flowi *key, u16 family, u8 dir, + flow_resolve_t resolver); +extern void flow_cache_flush(void); +extern atomic_t flow_cache_genid; + +#endif diff --git a/include/net/gen_stats.h b/include/net/gen_stats.h new file mode 100644 index 000000000000..0b95cf031d6e --- /dev/null +++ b/include/net/gen_stats.h @@ -0,0 +1,49 @@ +#ifndef __NET_GEN_STATS_H +#define __NET_GEN_STATS_H + +#include <linux/gen_stats.h> +#include <linux/socket.h> +#include <linux/rtnetlink.h> +#include <linux/pkt_sched.h> + +struct gnet_dump +{ + spinlock_t * lock; + struct sk_buff * skb; + struct rtattr * tail; + + /* Backward compatability */ + int compat_tc_stats; + int compat_xstats; + void * xstats; + int xstats_len; + struct tc_stats tc_stats; +}; + +extern int gnet_stats_start_copy(struct sk_buff *skb, int type, + spinlock_t *lock, struct gnet_dump *d); + +extern int gnet_stats_start_copy_compat(struct sk_buff *skb, int type, + int tc_stats_type,int xstats_type, + spinlock_t *lock, struct gnet_dump *d); + +extern int gnet_stats_copy_basic(struct gnet_dump *d, + struct gnet_stats_basic *b); +extern int gnet_stats_copy_rate_est(struct gnet_dump *d, + struct gnet_stats_rate_est *r); +extern int gnet_stats_copy_queue(struct gnet_dump *d, + struct gnet_stats_queue *q); +extern int gnet_stats_copy_app(struct gnet_dump *d, void *st, int len); + +extern int gnet_stats_finish_copy(struct gnet_dump *d); + +extern int gen_new_estimator(struct gnet_stats_basic *bstats, + struct gnet_stats_rate_est *rate_est, + spinlock_t *stats_lock, struct rtattr *opt); +extern void gen_kill_estimator(struct gnet_stats_basic *bstats, + struct gnet_stats_rate_est *rate_est); +extern int gen_replace_estimator(struct gnet_stats_basic *bstats, + struct gnet_stats_rate_est *rate_est, + spinlock_t *stats_lock, struct rtattr *opt); + +#endif diff --git a/include/net/icmp.h b/include/net/icmp.h new file mode 100644 index 000000000000..3fc192478aa2 --- /dev/null +++ b/include/net/icmp.h @@ -0,0 +1,60 @@ +/* + * INET An implementation of the TCP/IP protocol suite for the LINUX + * operating system. INET is implemented using the BSD Socket + * interface as the means of communication with the user level. + * + * Definitions for the ICMP module. + * + * Version: @(#)icmp.h 1.0.4 05/13/93 + * + * Authors: Ross Biro, <bir7@leland.Stanford.Edu> + * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#ifndef _ICMP_H +#define _ICMP_H + +#include <linux/config.h> +#include <linux/icmp.h> +#include <linux/skbuff.h> + +#include <net/sock.h> +#include <net/protocol.h> +#include <net/snmp.h> +#include <linux/ip.h> + +struct icmp_err { + int errno; + unsigned fatal:1; +}; + +extern struct icmp_err icmp_err_convert[]; +DECLARE_SNMP_STAT(struct icmp_mib, icmp_statistics); +#define ICMP_INC_STATS(field) SNMP_INC_STATS(icmp_statistics, field) +#define ICMP_INC_STATS_BH(field) SNMP_INC_STATS_BH(icmp_statistics, field) +#define ICMP_INC_STATS_USER(field) SNMP_INC_STATS_USER(icmp_statistics, field) + +extern void icmp_send(struct sk_buff *skb_in, int type, int code, u32 info); +extern int icmp_rcv(struct sk_buff *skb); +extern int icmp_ioctl(struct sock *sk, int cmd, unsigned long arg); +extern void icmp_init(struct net_proto_family *ops); + +/* Move into dst.h ? */ +extern int xrlim_allow(struct dst_entry *dst, int timeout); + +struct raw_sock { + /* inet_sock has to be the first member */ + struct inet_sock inet; + struct icmp_filter filter; +}; + +static inline struct raw_sock *raw_sk(const struct sock *sk) +{ + return (struct raw_sock *)sk; +} + +#endif /* _ICMP_H */ diff --git a/include/net/if_inet6.h b/include/net/if_inet6.h new file mode 100644 index 000000000000..e97a9accb71d --- /dev/null +++ b/include/net/if_inet6.h @@ -0,0 +1,285 @@ +/* + * inet6 interface/address list definitions + * Linux INET6 implementation + * + * Authors: + * Pedro Roque <roque@di.fc.ul.pt> + * + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#ifndef _NET_IF_INET6_H +#define _NET_IF_INET6_H + +#include <net/snmp.h> +#include <linux/ipv6.h> + +/* inet6_dev.if_flags */ + +#define IF_RA_OTHERCONF 0x80 +#define IF_RA_MANAGED 0x40 +#define IF_RA_RCVD 0x20 +#define IF_RS_SENT 0x10 + +/* prefix flags */ +#define IF_PREFIX_ONLINK 0x01 +#define IF_PREFIX_AUTOCONF 0x02 + +#ifdef __KERNEL__ + +struct inet6_ifaddr +{ + struct in6_addr addr; + __u32 prefix_len; + + __u32 valid_lft; + __u32 prefered_lft; + unsigned long cstamp; /* created timestamp */ + unsigned long tstamp; /* updated timestamp */ + atomic_t refcnt; + spinlock_t lock; + + __u8 probes; + __u8 flags; + + __u16 scope; + + struct timer_list timer; + + struct inet6_dev *idev; + struct rt6_info *rt; + + struct inet6_ifaddr *lst_next; /* next addr in addr_lst */ + struct inet6_ifaddr *if_next; /* next addr in inet6_dev */ + +#ifdef CONFIG_IPV6_PRIVACY + struct inet6_ifaddr *tmp_next; /* next addr in tempaddr_lst */ + struct inet6_ifaddr *ifpub; + int regen_count; +#endif + + int dead; +}; + +struct ip6_sf_socklist +{ + unsigned int sl_max; + unsigned int sl_count; + struct in6_addr sl_addr[0]; +}; + +#define IP6_SFLSIZE(count) (sizeof(struct ip6_sf_socklist) + \ + (count) * sizeof(struct in6_addr)) + +#define IP6_SFBLOCK 10 /* allocate this many at once */ + +struct ipv6_mc_socklist +{ + struct in6_addr addr; + int ifindex; + struct ipv6_mc_socklist *next; + unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */ + struct ip6_sf_socklist *sflist; +}; + +struct ip6_sf_list +{ + struct ip6_sf_list *sf_next; + struct in6_addr sf_addr; + unsigned long sf_count[2]; /* include/exclude counts */ + unsigned char sf_gsresp; /* include in g & s response? */ + unsigned char sf_oldin; /* change state */ + unsigned char sf_crcount; /* retrans. left to send */ +}; + +#define MAF_TIMER_RUNNING 0x01 +#define MAF_LAST_REPORTER 0x02 +#define MAF_LOADED 0x04 +#define MAF_NOREPORT 0x08 +#define MAF_GSQUERY 0x10 + +struct ifmcaddr6 +{ + struct in6_addr mca_addr; + struct inet6_dev *idev; + struct ifmcaddr6 *next; + struct ip6_sf_list *mca_sources; + struct ip6_sf_list *mca_tomb; + unsigned int mca_sfmode; + unsigned long mca_sfcount[2]; + struct timer_list mca_timer; + unsigned mca_flags; + int mca_users; + atomic_t mca_refcnt; + spinlock_t mca_lock; + unsigned char mca_crcount; + unsigned long mca_cstamp; + unsigned long mca_tstamp; +}; + +/* Anycast stuff */ + +struct ipv6_ac_socklist +{ + struct in6_addr acl_addr; + int acl_ifindex; + struct ipv6_ac_socklist *acl_next; +}; + +struct ifacaddr6 +{ + struct in6_addr aca_addr; + struct inet6_dev *aca_idev; + struct rt6_info *aca_rt; + struct ifacaddr6 *aca_next; + int aca_users; + atomic_t aca_refcnt; + spinlock_t aca_lock; + unsigned long aca_cstamp; + unsigned long aca_tstamp; +}; + +#define IFA_HOST IPV6_ADDR_LOOPBACK +#define IFA_LINK IPV6_ADDR_LINKLOCAL +#define IFA_SITE IPV6_ADDR_SITELOCAL +#define IFA_GLOBAL 0x0000U + +struct ipv6_devstat { + struct proc_dir_entry *proc_dir_entry; + DEFINE_SNMP_STAT(struct icmpv6_mib, icmpv6); +}; + +struct inet6_dev +{ + struct net_device *dev; + + struct inet6_ifaddr *addr_list; + + struct ifmcaddr6 *mc_list; + struct ifmcaddr6 *mc_tomb; + rwlock_t mc_lock; + unsigned long mc_v1_seen; + unsigned long mc_maxdelay; + unsigned char mc_qrv; + unsigned char mc_gq_running; + unsigned char mc_ifc_count; + struct timer_list mc_gq_timer; /* general query timer */ + struct timer_list mc_ifc_timer; /* interface change timer */ + + struct ifacaddr6 *ac_list; + rwlock_t lock; + atomic_t refcnt; + __u32 if_flags; + int dead; + +#ifdef CONFIG_IPV6_PRIVACY + u8 rndid[8]; + u8 entropy[8]; + struct timer_list regen_timer; + struct inet6_ifaddr *tempaddr_list; + __u8 work_eui64[8]; + __u8 work_digest[16]; +#endif + + struct neigh_parms *nd_parms; + struct inet6_dev *next; + struct ipv6_devconf cnf; + struct ipv6_devstat stats; + unsigned long tstamp; /* ipv6InterfaceTable update timestamp */ +}; + +extern struct ipv6_devconf ipv6_devconf; + +static inline void ipv6_eth_mc_map(struct in6_addr *addr, char *buf) +{ + /* + * +-------+-------+-------+-------+-------+-------+ + * | 33 | 33 | DST13 | DST14 | DST15 | DST16 | + * +-------+-------+-------+-------+-------+-------+ + */ + + buf[0]= 0x33; + buf[1]= 0x33; + + memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32)); +} + +static inline void ipv6_tr_mc_map(struct in6_addr *addr, char *buf) +{ + /* All nodes FF01::1, FF02::1, FF02::1:FFxx:xxxx */ + + if (((addr->s6_addr[0] == 0xFF) && + ((addr->s6_addr[1] == 0x01) || (addr->s6_addr[1] == 0x02)) && + (addr->s6_addr16[1] == 0) && + (addr->s6_addr32[1] == 0) && + (addr->s6_addr32[2] == 0) && + (addr->s6_addr16[6] == 0) && + (addr->s6_addr[15] == 1)) || + ((addr->s6_addr[0] == 0xFF) && + (addr->s6_addr[1] == 0x02) && + (addr->s6_addr16[1] == 0) && + (addr->s6_addr32[1] == 0) && + (addr->s6_addr16[4] == 0) && + (addr->s6_addr[10] == 0) && + (addr->s6_addr[11] == 1) && + (addr->s6_addr[12] == 0xff))) + { + buf[0]=0xC0; + buf[1]=0x00; + buf[2]=0x01; + buf[3]=0x00; + buf[4]=0x00; + buf[5]=0x00; + /* All routers FF0x::2 */ + } else if ((addr->s6_addr[0] ==0xff) && + ((addr->s6_addr[1] & 0xF0) == 0) && + (addr->s6_addr16[1] == 0) && + (addr->s6_addr32[1] == 0) && + (addr->s6_addr32[2] == 0) && + (addr->s6_addr16[6] == 0) && + (addr->s6_addr[15] == 2)) + { + buf[0]=0xC0; + buf[1]=0x00; + buf[2]=0x02; + buf[3]=0x00; + buf[4]=0x00; + buf[5]=0x00; + } else { + unsigned char i ; + + i = addr->s6_addr[15] & 7 ; + buf[0]=0xC0; + buf[1]=0x00; + buf[2]=0x00; + buf[3]=0x01 << i ; + buf[4]=0x00; + buf[5]=0x00; + } +} + +static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf) +{ + buf[0] = 0x00; +} + +static inline void ipv6_ib_mc_map(struct in6_addr *addr, char *buf) +{ + buf[0] = 0; /* Reserved */ + buf[1] = 0xff; /* Multicast QPN */ + buf[2] = 0xff; + buf[3] = 0xff; + buf[4] = 0xff; + buf[5] = 0x12; /* link local scope */ + buf[6] = 0x60; /* IPv6 signature */ + buf[7] = 0x1b; + buf[8] = 0; /* P_Key */ + buf[9] = 0; + memcpy(buf + 10, addr->s6_addr + 6, 10); +} +#endif +#endif diff --git a/include/net/inet_common.h b/include/net/inet_common.h new file mode 100644 index 000000000000..fbc1f4d140d8 --- /dev/null +++ b/include/net/inet_common.h @@ -0,0 +1,44 @@ +#ifndef _INET_COMMON_H +#define _INET_COMMON_H + +extern struct proto_ops inet_stream_ops; +extern struct proto_ops inet_dgram_ops; + +/* + * INET4 prototypes used by INET6 + */ + +extern void inet_remove_sock(struct sock *sk1); +extern void inet_put_sock(unsigned short num, + struct sock *sk); +extern int inet_release(struct socket *sock); +extern int inet_stream_connect(struct socket *sock, + struct sockaddr * uaddr, + int addr_len, int flags); +extern int inet_dgram_connect(struct socket *sock, + struct sockaddr * uaddr, + int addr_len, int flags); +extern int inet_accept(struct socket *sock, + struct socket *newsock, int flags); +extern int inet_sendmsg(struct kiocb *iocb, + struct socket *sock, + struct msghdr *msg, + size_t size); +extern int inet_shutdown(struct socket *sock, int how); +extern unsigned int inet_poll(struct file * file, struct socket *sock, struct poll_table_struct *wait); +extern int inet_listen(struct socket *sock, int backlog); + +extern void inet_sock_destruct(struct sock *sk); +extern atomic_t inet_sock_nr; + +extern int inet_bind(struct socket *sock, + struct sockaddr *uaddr, int addr_len); +extern int inet_getname(struct socket *sock, + struct sockaddr *uaddr, + int *uaddr_len, int peer); +extern int inet_ioctl(struct socket *sock, + unsigned int cmd, unsigned long arg); + +#endif + + diff --git a/include/net/inet_ecn.h b/include/net/inet_ecn.h new file mode 100644 index 000000000000..f87845e2e965 --- /dev/null +++ b/include/net/inet_ecn.h @@ -0,0 +1,108 @@ +#ifndef _INET_ECN_H_ +#define _INET_ECN_H_ + +#include <linux/ip.h> +#include <net/dsfield.h> + +enum { + INET_ECN_NOT_ECT = 0, + INET_ECN_ECT_1 = 1, + INET_ECN_ECT_0 = 2, + INET_ECN_CE = 3, + INET_ECN_MASK = 3, +}; + +static inline int INET_ECN_is_ce(__u8 dsfield) +{ + return (dsfield & INET_ECN_MASK) == INET_ECN_CE; +} + +static inline int INET_ECN_is_not_ect(__u8 dsfield) +{ + return (dsfield & INET_ECN_MASK) == INET_ECN_NOT_ECT; +} + +static inline int INET_ECN_is_capable(__u8 dsfield) +{ + return (dsfield & INET_ECN_ECT_0); +} + +static inline __u8 INET_ECN_encapsulate(__u8 outer, __u8 inner) +{ + outer &= ~INET_ECN_MASK; + outer |= !INET_ECN_is_ce(inner) ? (inner & INET_ECN_MASK) : + INET_ECN_ECT_0; + return outer; +} + +#define INET_ECN_xmit(sk) do { inet_sk(sk)->tos |= INET_ECN_ECT_0; } while (0) +#define INET_ECN_dontxmit(sk) \ + do { inet_sk(sk)->tos &= ~INET_ECN_MASK; } while (0) + +#define IP6_ECN_flow_init(label) do { \ + (label) &= ~htonl(INET_ECN_MASK << 20); \ + } while (0) + +#define IP6_ECN_flow_xmit(sk, label) do { \ + if (INET_ECN_is_capable(inet_sk(sk)->tos)) \ + (label) |= __constant_htons(INET_ECN_ECT_0 << 4); \ + } while (0) + +static inline void IP_ECN_set_ce(struct iphdr *iph) +{ + u32 check = iph->check; + u32 ecn = (iph->tos + 1) & INET_ECN_MASK; + + /* + * After the last operation we have (in binary): + * INET_ECN_NOT_ECT => 01 + * INET_ECN_ECT_1 => 10 + * INET_ECN_ECT_0 => 11 + * INET_ECN_CE => 00 + */ + if (!(ecn & 2)) + return; + + /* + * The following gives us: + * INET_ECN_ECT_1 => check += htons(0xFFFD) + * INET_ECN_ECT_0 => check += htons(0xFFFE) + */ + check += htons(0xFFFB) + htons(ecn); + + iph->check = check + (check>=0xFFFF); + iph->tos |= INET_ECN_CE; +} + +static inline void IP_ECN_clear(struct iphdr *iph) +{ + iph->tos &= ~INET_ECN_MASK; +} + +static inline void ipv4_copy_dscp(struct iphdr *outer, struct iphdr *inner) +{ + u32 dscp = ipv4_get_dsfield(outer) & ~INET_ECN_MASK; + ipv4_change_dsfield(inner, INET_ECN_MASK, dscp); +} + +struct ipv6hdr; + +static inline void IP6_ECN_set_ce(struct ipv6hdr *iph) +{ + if (INET_ECN_is_not_ect(ipv6_get_dsfield(iph))) + return; + *(u32*)iph |= htonl(INET_ECN_CE << 20); +} + +static inline void IP6_ECN_clear(struct ipv6hdr *iph) +{ + *(u32*)iph &= ~htonl(INET_ECN_MASK << 20); +} + +static inline void ipv6_copy_dscp(struct ipv6hdr *outer, struct ipv6hdr *inner) +{ + u32 dscp = ipv6_get_dsfield(outer) & ~INET_ECN_MASK; + ipv6_change_dsfield(inner, INET_ECN_MASK, dscp); +} + +#endif diff --git a/include/net/inetpeer.h b/include/net/inetpeer.h new file mode 100644 index 000000000000..7fda471002b6 --- /dev/null +++ b/include/net/inetpeer.h @@ -0,0 +1,66 @@ +/* + * INETPEER - A storage for permanent information about peers + * + * Version: $Id: inetpeer.h,v 1.2 2002/01/12 07:54:56 davem Exp $ + * + * Authors: Andrey V. Savochkin <saw@msu.ru> + */ + +#ifndef _NET_INETPEER_H +#define _NET_INETPEER_H + +#include <linux/types.h> +#include <linux/init.h> +#include <linux/jiffies.h> +#include <linux/spinlock.h> +#include <asm/atomic.h> + +struct inet_peer +{ + struct inet_peer *avl_left, *avl_right; + struct inet_peer *unused_next, **unused_prevp; + unsigned long dtime; /* the time of last use of not + * referenced entries */ + atomic_t refcnt; + __u32 v4daddr; /* peer's address */ + __u16 avl_height; + __u16 ip_id_count; /* IP ID for the next packet */ + __u32 tcp_ts; + unsigned long tcp_ts_stamp; +}; + +void inet_initpeers(void) __init; + +/* can be called with or without local BH being disabled */ +struct inet_peer *inet_getpeer(__u32 daddr, int create); + +extern spinlock_t inet_peer_unused_lock; +extern struct inet_peer **inet_peer_unused_tailp; +/* can be called from BH context or outside */ +static inline void inet_putpeer(struct inet_peer *p) +{ + spin_lock_bh(&inet_peer_unused_lock); + if (atomic_dec_and_test(&p->refcnt)) { + p->unused_prevp = inet_peer_unused_tailp; + p->unused_next = NULL; + *inet_peer_unused_tailp = p; + inet_peer_unused_tailp = &p->unused_next; + p->dtime = jiffies; + } + spin_unlock_bh(&inet_peer_unused_lock); +} + +extern spinlock_t inet_peer_idlock; +/* can be called with or without local BH being disabled */ +static inline __u16 inet_getid(struct inet_peer *p, int more) +{ + __u16 id; + + spin_lock_bh(&inet_peer_idlock); + id = p->ip_id_count; + p->ip_id_count += 1 + more; + spin_unlock_bh(&inet_peer_idlock); + return id; +} + +#endif /* _NET_INETPEER_H */ diff --git a/include/net/ip.h b/include/net/ip.h new file mode 100644 index 000000000000..b4db1375da2c --- /dev/null +++ b/include/net/ip.h @@ -0,0 +1,353 @@ +/* + * INET An implementation of the TCP/IP protocol suite for the LINUX + * operating system. INET is implemented using the BSD Socket + * interface as the means of communication with the user level. + * + * Definitions for the IP module. + * + * Version: @(#)ip.h 1.0.2 05/07/93 + * + * Authors: Ross Biro, <bir7@leland.Stanford.Edu> + * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> + * Alan Cox, <gw4pts@gw4pts.ampr.org> + * + * Changes: + * Mike McLagan : Routing by source + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#ifndef _IP_H +#define _IP_H + +#include <linux/config.h> +#include <linux/types.h> +#include <linux/socket.h> +#include <linux/ip.h> +#include <linux/in.h> +#include <linux/netdevice.h> +#include <linux/inetdevice.h> +#include <linux/in_route.h> +#include <net/route.h> +#include <net/arp.h> +#include <net/snmp.h> + +struct sock; + +struct inet_skb_parm +{ + struct ip_options opt; /* Compiled IP options */ + unsigned char flags; + +#define IPSKB_MASQUERADED 1 +#define IPSKB_TRANSLATED 2 +#define IPSKB_FORWARDED 4 +#define IPSKB_XFRM_TUNNEL_SIZE 8 +}; + +struct ipcm_cookie +{ + u32 addr; + int oif; + struct ip_options *opt; +}; + +#define IPCB(skb) ((struct inet_skb_parm*)((skb)->cb)) + +struct ip_ra_chain +{ + struct ip_ra_chain *next; + struct sock *sk; + void (*destructor)(struct sock *); +}; + +extern struct ip_ra_chain *ip_ra_chain; +extern rwlock_t ip_ra_lock; + +/* IP flags. */ +#define IP_CE 0x8000 /* Flag: "Congestion" */ +#define IP_DF 0x4000 /* Flag: "Don't Fragment" */ +#define IP_MF 0x2000 /* Flag: "More Fragments" */ +#define IP_OFFSET 0x1FFF /* "Fragment Offset" part */ + +#define IP_FRAG_TIME (30 * HZ) /* fragment lifetime */ + +extern void ip_mc_dropsocket(struct sock *); +extern void ip_mc_dropdevice(struct net_device *dev); +extern int igmp_mc_proc_init(void); + +/* + * Functions provided by ip.c + */ + +extern int ip_build_and_send_pkt(struct sk_buff *skb, struct sock *sk, + u32 saddr, u32 daddr, + struct ip_options *opt); +extern int ip_rcv(struct sk_buff *skb, struct net_device *dev, + struct packet_type *pt); +extern int ip_local_deliver(struct sk_buff *skb); +extern int ip_mr_input(struct sk_buff *skb); +extern int ip_output(struct sk_buff *skb); +extern int ip_mc_output(struct sk_buff *skb); +extern int ip_fragment(struct sk_buff *skb, int (*out)(struct sk_buff*)); +extern int ip_do_nat(struct sk_buff *skb); +extern void ip_send_check(struct iphdr *ip); +extern int ip_queue_xmit(struct sk_buff *skb, int ipfragok); +extern void ip_init(void); +extern int ip_append_data(struct sock *sk, + int getfrag(void *from, char *to, int offset, int len, + int odd, struct sk_buff *skb), + void *from, int len, int protolen, + struct ipcm_cookie *ipc, + struct rtable *rt, + unsigned int flags); +extern int ip_generic_getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb); +extern ssize_t ip_append_page(struct sock *sk, struct page *page, + int offset, size_t size, int flags); +extern int ip_push_pending_frames(struct sock *sk); +extern void ip_flush_pending_frames(struct sock *sk); + +/* datagram.c */ +extern int ip4_datagram_connect(struct sock *sk, + struct sockaddr *uaddr, int addr_len); + +/* + * Map a multicast IP onto multicast MAC for type Token Ring. + * This conforms to RFC1469 Option 2 Multicasting i.e. + * using a functional address to transmit / receive + * multicast packets. + */ + +static inline void ip_tr_mc_map(u32 addr, char *buf) +{ + buf[0]=0xC0; + buf[1]=0x00; + buf[2]=0x00; + buf[3]=0x04; + buf[4]=0x00; + buf[5]=0x00; +} + +struct ip_reply_arg { + struct kvec iov[1]; + u32 csum; + int csumoffset; /* u16 offset of csum in iov[0].iov_base */ + /* -1 if not needed */ +}; + +void ip_send_reply(struct sock *sk, struct sk_buff *skb, struct ip_reply_arg *arg, + unsigned int len); + +extern int ip_finish_output(struct sk_buff *skb); + +struct ipv4_config +{ + int log_martians; + int autoconfig; + int no_pmtu_disc; +}; + +extern struct ipv4_config ipv4_config; +DECLARE_SNMP_STAT(struct ipstats_mib, ip_statistics); +#define IP_INC_STATS(field) SNMP_INC_STATS(ip_statistics, field) +#define IP_INC_STATS_BH(field) SNMP_INC_STATS_BH(ip_statistics, field) +#define IP_INC_STATS_USER(field) SNMP_INC_STATS_USER(ip_statistics, field) +DECLARE_SNMP_STAT(struct linux_mib, net_statistics); +#define NET_INC_STATS(field) SNMP_INC_STATS(net_statistics, field) +#define NET_INC_STATS_BH(field) SNMP_INC_STATS_BH(net_statistics, field) +#define NET_INC_STATS_USER(field) SNMP_INC_STATS_USER(net_statistics, field) +#define NET_ADD_STATS_BH(field, adnd) SNMP_ADD_STATS_BH(net_statistics, field, adnd) +#define NET_ADD_STATS_USER(field, adnd) SNMP_ADD_STATS_USER(net_statistics, field, adnd) + +extern int sysctl_local_port_range[2]; +extern int sysctl_ip_default_ttl; + +#ifdef CONFIG_INET +/* The function in 2.2 was invalid, producing wrong result for + * check=0xFEFF. It was noticed by Arthur Skawina _year_ ago. --ANK(000625) */ +static inline +int ip_decrease_ttl(struct iphdr *iph) +{ + u32 check = iph->check; + check += htons(0x0100); + iph->check = check + (check>=0xFFFF); + return --iph->ttl; +} + +static inline +int ip_dont_fragment(struct sock *sk, struct dst_entry *dst) +{ + return (inet_sk(sk)->pmtudisc == IP_PMTUDISC_DO || + (inet_sk(sk)->pmtudisc == IP_PMTUDISC_WANT && + !(dst_metric(dst, RTAX_LOCK)&(1<<RTAX_MTU)))); +} + +extern void __ip_select_ident(struct iphdr *iph, struct dst_entry *dst, int more); + +static inline void ip_select_ident(struct iphdr *iph, struct dst_entry *dst, struct sock *sk) +{ + if (iph->frag_off & htons(IP_DF)) { + /* This is only to work around buggy Windows95/2000 + * VJ compression implementations. If the ID field + * does not change, they drop every other packet in + * a TCP stream using header compression. + */ + iph->id = (sk && inet_sk(sk)->daddr) ? + htons(inet_sk(sk)->id++) : 0; + } else + __ip_select_ident(iph, dst, 0); +} + +static inline void ip_select_ident_more(struct iphdr *iph, struct dst_entry *dst, struct sock *sk, int more) +{ + if (iph->frag_off & htons(IP_DF)) { + if (sk && inet_sk(sk)->daddr) { + iph->id = htons(inet_sk(sk)->id); + inet_sk(sk)->id += 1 + more; + } else + iph->id = 0; + } else + __ip_select_ident(iph, dst, more); +} + +/* + * Map a multicast IP onto multicast MAC for type ethernet. + */ + +static inline void ip_eth_mc_map(u32 addr, char *buf) +{ + addr=ntohl(addr); + buf[0]=0x01; + buf[1]=0x00; + buf[2]=0x5e; + buf[5]=addr&0xFF; + addr>>=8; + buf[4]=addr&0xFF; + addr>>=8; + buf[3]=addr&0x7F; +} + +/* + * Map a multicast IP onto multicast MAC for type IP-over-InfiniBand. + * Leave P_Key as 0 to be filled in by driver. + */ + +static inline void ip_ib_mc_map(u32 addr, char *buf) +{ + buf[0] = 0; /* Reserved */ + buf[1] = 0xff; /* Multicast QPN */ + buf[2] = 0xff; + buf[3] = 0xff; + addr = ntohl(addr); + buf[4] = 0xff; + buf[5] = 0x12; /* link local scope */ + buf[6] = 0x40; /* IPv4 signature */ + buf[7] = 0x1b; + buf[8] = 0; /* P_Key */ + buf[9] = 0; + buf[10] = 0; + buf[11] = 0; + buf[12] = 0; + buf[13] = 0; + buf[14] = 0; + buf[15] = 0; + buf[19] = addr & 0xff; + addr >>= 8; + buf[18] = addr & 0xff; + addr >>= 8; + buf[17] = addr & 0xff; + addr >>= 8; + buf[16] = addr & 0x0f; +} + +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) +#include <linux/ipv6.h> +#endif + +static __inline__ void inet_reset_saddr(struct sock *sk) +{ + inet_sk(sk)->rcv_saddr = inet_sk(sk)->saddr = 0; +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) + if (sk->sk_family == PF_INET6) { + struct ipv6_pinfo *np = inet6_sk(sk); + + memset(&np->saddr, 0, sizeof(np->saddr)); + memset(&np->rcv_saddr, 0, sizeof(np->rcv_saddr)); + } +#endif +} + +#endif + +extern int ip_call_ra_chain(struct sk_buff *skb); + +/* + * Functions provided by ip_fragment.o + */ + +enum ip_defrag_users +{ + IP_DEFRAG_LOCAL_DELIVER, + IP_DEFRAG_CALL_RA_CHAIN, + IP_DEFRAG_CONNTRACK_IN, + IP_DEFRAG_CONNTRACK_OUT, + IP_DEFRAG_NAT_OUT, + IP_DEFRAG_VS_IN, + IP_DEFRAG_VS_OUT, + IP_DEFRAG_VS_FWD +}; + +struct sk_buff *ip_defrag(struct sk_buff *skb, u32 user); +extern int ip_frag_nqueues; +extern atomic_t ip_frag_mem; + +/* + * Functions provided by ip_forward.c + */ + +extern int ip_forward(struct sk_buff *skb); +extern int ip_net_unreachable(struct sk_buff *skb); + +/* + * Functions provided by ip_options.c + */ + +extern void ip_options_build(struct sk_buff *skb, struct ip_options *opt, u32 daddr, struct rtable *rt, int is_frag); +extern int ip_options_echo(struct ip_options *dopt, struct sk_buff *skb); +extern void ip_options_fragment(struct sk_buff *skb); +extern int ip_options_compile(struct ip_options *opt, struct sk_buff *skb); +extern int ip_options_get(struct ip_options **optp, unsigned char *data, int optlen, int user); +extern void ip_options_undo(struct ip_options * opt); +extern void ip_forward_options(struct sk_buff *skb); +extern int ip_options_rcv_srr(struct sk_buff *skb); + +/* + * Functions provided by ip_sockglue.c + */ + +extern void ip_cmsg_recv(struct msghdr *msg, struct sk_buff *skb); +extern int ip_cmsg_send(struct msghdr *msg, struct ipcm_cookie *ipc); +extern int ip_setsockopt(struct sock *sk, int level, int optname, char __user *optval, int optlen); +extern int ip_getsockopt(struct sock *sk, int level, int optname, char __user *optval, int __user *optlen); +extern int ip_ra_control(struct sock *sk, unsigned char on, void (*destructor)(struct sock *)); + +extern int ip_recv_error(struct sock *sk, struct msghdr *msg, int len); +extern void ip_icmp_error(struct sock *sk, struct sk_buff *skb, int err, + u16 port, u32 info, u8 *payload); +extern void ip_local_error(struct sock *sk, int err, u32 daddr, u16 dport, + u32 info); + +/* sysctl helpers - any sysctl which holds a value that ends up being + * fed into the routing cache should use these handlers. + */ +int ipv4_doint_and_flush(ctl_table *ctl, int write, + struct file* filp, void __user *buffer, + size_t *lenp, loff_t *ppos); +int ipv4_doint_and_flush_strategy(ctl_table *table, int __user *name, int nlen, + void __user *oldval, size_t __user *oldlenp, + void __user *newval, size_t newlen, + void **context); + +#endif /* _IP_H */ diff --git a/include/net/ip6_checksum.h b/include/net/ip6_checksum.h new file mode 100644 index 000000000000..3dfc885bdf25 --- /dev/null +++ b/include/net/ip6_checksum.h @@ -0,0 +1,94 @@ +/* + * INET An implementation of the TCP/IP protocol suite for the LINUX + * operating system. INET is implemented using the BSD Socket + * interface as the means of communication with the user level. + * + * Checksumming functions for IPv6 + * + * Authors: Jorge Cwik, <jorge@laser.satlink.net> + * Arnt Gulbrandsen, <agulbra@nvg.unit.no> + * Borrows very liberally from tcp.c and ip.c, see those + * files for more names. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +/* + * Fixes: + * + * Ralf Baechle : generic ipv6 checksum + * <ralf@waldorf-gmbh.de> + */ + +#ifndef _CHECKSUM_IPV6_H +#define _CHECKSUM_IPV6_H + +#include <asm/types.h> +#include <asm/byteorder.h> +#include <net/ip.h> +#include <asm/checksum.h> +#include <linux/in6.h> + +#ifndef _HAVE_ARCH_IPV6_CSUM + +static __inline__ unsigned short int csum_ipv6_magic(struct in6_addr *saddr, + struct in6_addr *daddr, + __u16 len, + unsigned short proto, + unsigned int csum) +{ + + int carry; + __u32 ulen; + __u32 uproto; + + csum += saddr->s6_addr32[0]; + carry = (csum < saddr->s6_addr32[0]); + csum += carry; + + csum += saddr->s6_addr32[1]; + carry = (csum < saddr->s6_addr32[1]); + csum += carry; + + csum += saddr->s6_addr32[2]; + carry = (csum < saddr->s6_addr32[2]); + csum += carry; + + csum += saddr->s6_addr32[3]; + carry = (csum < saddr->s6_addr32[3]); + csum += carry; + + csum += daddr->s6_addr32[0]; + carry = (csum < daddr->s6_addr32[0]); + csum += carry; + + csum += daddr->s6_addr32[1]; + carry = (csum < daddr->s6_addr32[1]); + csum += carry; + + csum += daddr->s6_addr32[2]; + carry = (csum < daddr->s6_addr32[2]); + csum += carry; + + csum += daddr->s6_addr32[3]; + carry = (csum < daddr->s6_addr32[3]); + csum += carry; + + ulen = htonl((__u32) len); + csum += ulen; + carry = (csum < ulen); + csum += carry; + + uproto = htonl(proto); + csum += uproto; + carry = (csum < uproto); + csum += carry; + + return csum_fold(csum); +} + +#endif +#endif diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h new file mode 100644 index 000000000000..319904518194 --- /dev/null +++ b/include/net/ip6_fib.h @@ -0,0 +1,185 @@ +/* + * Linux INET6 implementation + * + * Authors: + * Pedro Roque <roque@di.fc.ul.pt> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#ifndef _IP6_FIB_H +#define _IP6_FIB_H + +#ifdef __KERNEL__ + +#include <linux/ipv6_route.h> + +#include <net/dst.h> +#include <net/flow.h> +#include <linux/rtnetlink.h> +#include <linux/spinlock.h> + +struct rt6_info; + +struct fib6_node +{ + struct fib6_node *parent; + struct fib6_node *left; + struct fib6_node *right; + + struct fib6_node *subtree; + + struct rt6_info *leaf; + + __u16 fn_bit; /* bit key */ + __u16 fn_flags; + __u32 fn_sernum; +}; + + +/* + * routing information + * + */ + +struct rt6key +{ + struct in6_addr addr; + int plen; +}; + +struct rt6_info +{ + union { + struct dst_entry dst; + struct rt6_info *next; + } u; + + struct inet6_dev *rt6i_idev; + +#define rt6i_dev u.dst.dev +#define rt6i_nexthop u.dst.neighbour +#define rt6i_expires u.dst.expires + + struct fib6_node *rt6i_node; + + struct in6_addr rt6i_gateway; + + u32 rt6i_flags; + u32 rt6i_metric; + atomic_t rt6i_ref; + + struct rt6key rt6i_dst; + struct rt6key rt6i_src; + + u8 rt6i_protocol; +}; + +struct fib6_walker_t +{ + struct fib6_walker_t *prev, *next; + struct fib6_node *root, *node; + struct rt6_info *leaf; + unsigned char state; + unsigned char prune; + int (*func)(struct fib6_walker_t *); + void *args; +}; + +extern struct fib6_walker_t fib6_walker_list; +extern rwlock_t fib6_walker_lock; + +static inline void fib6_walker_link(struct fib6_walker_t *w) +{ + write_lock_bh(&fib6_walker_lock); + w->next = fib6_walker_list.next; + w->prev = &fib6_walker_list; + w->next->prev = w; + w->prev->next = w; + write_unlock_bh(&fib6_walker_lock); +} + +static inline void fib6_walker_unlink(struct fib6_walker_t *w) +{ + write_lock_bh(&fib6_walker_lock); + w->next->prev = w->prev; + w->prev->next = w->next; + w->prev = w->next = w; + write_unlock_bh(&fib6_walker_lock); +} + +struct rt6_statistics { + __u32 fib_nodes; + __u32 fib_route_nodes; + __u32 fib_rt_alloc; /* permanent routes */ + __u32 fib_rt_entries; /* rt entries in table */ + __u32 fib_rt_cache; /* cache routes */ + __u32 fib_discarded_routes; +}; + +#define RTN_TL_ROOT 0x0001 +#define RTN_ROOT 0x0002 /* tree root node */ +#define RTN_RTINFO 0x0004 /* node with valid routing info */ + +/* + * priority levels (or metrics) + * + */ + +#define RTPRI_FIREWALL 8 /* Firewall control information */ +#define RTPRI_FLOW 16 /* Flow based forwarding rules */ +#define RTPRI_KERN_CTL 32 /* Kernel control routes */ + +#define RTPRI_USER_MIN 256 /* Mimimum user priority */ +#define RTPRI_USER_MAX 1024 /* Maximum user priority */ + +#define RTPRI_KERN_DFLT 4096 /* Kernel default routes */ + +#define MAX_FLOW_BACKTRACE 32 + + +typedef void (*f_pnode)(struct fib6_node *fn, void *); + +extern struct fib6_node ip6_routing_table; + +/* + * exported functions + */ + +extern struct fib6_node *fib6_lookup(struct fib6_node *root, + struct in6_addr *daddr, + struct in6_addr *saddr); + +struct fib6_node *fib6_locate(struct fib6_node *root, + struct in6_addr *daddr, int dst_len, + struct in6_addr *saddr, int src_len); + +extern void fib6_clean_tree(struct fib6_node *root, + int (*func)(struct rt6_info *, void *arg), + int prune, void *arg); + +extern int fib6_walk(struct fib6_walker_t *w); +extern int fib6_walk_continue(struct fib6_walker_t *w); + +extern int fib6_add(struct fib6_node *root, + struct rt6_info *rt, + struct nlmsghdr *nlh, + void *rtattr); + +extern int fib6_del(struct rt6_info *rt, + struct nlmsghdr *nlh, + void *rtattr); + +extern void inet6_rt_notify(int event, struct rt6_info *rt, + struct nlmsghdr *nlh); + +extern void fib6_run_gc(unsigned long dummy); + +extern void fib6_gc_cleanup(void); + +extern void fib6_init(void); +#endif +#endif diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h new file mode 100644 index 000000000000..d5d1dd10cdb8 --- /dev/null +++ b/include/net/ip6_route.h @@ -0,0 +1,141 @@ +#ifndef _NET_IP6_ROUTE_H +#define _NET_IP6_ROUTE_H + +#define IP6_RT_PRIO_FW 16 +#define IP6_RT_PRIO_USER 1024 +#define IP6_RT_PRIO_ADDRCONF 256 +#define IP6_RT_PRIO_KERN 512 +#define IP6_RT_FLOW_MASK 0x00ff + +#ifdef __KERNEL__ + +#include <net/flow.h> +#include <net/ip6_fib.h> +#include <net/sock.h> +#include <linux/tcp.h> +#include <linux/ip.h> +#include <linux/ipv6.h> + +struct pol_chain { + int type; + int priority; + struct fib6_node *rules; + struct pol_chain *next; +}; + +extern struct rt6_info ip6_null_entry; + +extern int ip6_rt_gc_interval; + +extern void ip6_route_input(struct sk_buff *skb); + +extern struct dst_entry * ip6_route_output(struct sock *sk, + struct flowi *fl); + +extern int ip6_route_me_harder(struct sk_buff *skb); + +extern void ip6_route_init(void); +extern void ip6_route_cleanup(void); + +extern int ipv6_route_ioctl(unsigned int cmd, void __user *arg); + +extern int ip6_route_add(struct in6_rtmsg *rtmsg, + struct nlmsghdr *, + void *rtattr); +extern int ip6_ins_rt(struct rt6_info *, + struct nlmsghdr *, + void *rtattr); +extern int ip6_del_rt(struct rt6_info *, + struct nlmsghdr *, + void *rtattr); + +extern int ip6_rt_addr_add(struct in6_addr *addr, + struct net_device *dev, + int anycast); + +extern int ip6_rt_addr_del(struct in6_addr *addr, + struct net_device *dev); + +extern void rt6_sndmsg(int type, struct in6_addr *dst, + struct in6_addr *src, + struct in6_addr *gw, + struct net_device *dev, + int dstlen, int srclen, + int metric, __u32 flags); + +extern struct rt6_info *rt6_lookup(struct in6_addr *daddr, + struct in6_addr *saddr, + int oif, int flags); + +extern struct dst_entry *ndisc_dst_alloc(struct net_device *dev, + struct neighbour *neigh, + struct in6_addr *addr, + int (*output)(struct sk_buff *)); +extern int ndisc_dst_gc(int *more); +extern void fib6_force_start_gc(void); + +extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev, + const struct in6_addr *addr, + int anycast); + +/* + * support functions for ND + * + */ +extern struct rt6_info * rt6_get_dflt_router(struct in6_addr *addr, + struct net_device *dev); +extern struct rt6_info * rt6_add_dflt_router(struct in6_addr *gwaddr, + struct net_device *dev); + +extern void rt6_purge_dflt_routers(void); + +extern void rt6_reset_dflt_pointer(struct rt6_info *rt); + +extern void rt6_redirect(struct in6_addr *dest, + struct in6_addr *saddr, + struct neighbour *neigh, + u8 *lladdr, + int on_link); + +extern void rt6_pmtu_discovery(struct in6_addr *daddr, + struct in6_addr *saddr, + struct net_device *dev, + u32 pmtu); + +struct nlmsghdr; +struct netlink_callback; +extern int inet6_dump_fib(struct sk_buff *skb, struct netlink_callback *cb); +extern int inet6_rtm_newroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg); +extern int inet6_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg); +extern int inet6_rtm_getroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg); + +extern void rt6_ifdown(struct net_device *dev); +extern void rt6_mtu_change(struct net_device *dev, unsigned mtu); + +extern rwlock_t rt6_lock; + +/* + * Store a destination cache entry in a socket + */ +static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst, + struct in6_addr *daddr) +{ + struct ipv6_pinfo *np = inet6_sk(sk); + struct rt6_info *rt = (struct rt6_info *) dst; + + write_lock(&sk->sk_dst_lock); + __sk_dst_set(sk, dst); + np->daddr_cache = daddr; + np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0; + write_unlock(&sk->sk_dst_lock); +} + +static inline int ipv6_unicast_destination(struct sk_buff *skb) +{ + struct rt6_info *rt = (struct rt6_info *) skb->dst; + + return rt->rt6i_flags & RTF_LOCAL; +} + +#endif +#endif diff --git a/include/net/ip6_tunnel.h b/include/net/ip6_tunnel.h new file mode 100644 index 000000000000..29c9da707c7a --- /dev/null +++ b/include/net/ip6_tunnel.h @@ -0,0 +1,40 @@ +/* + * $Id$ + */ + +#ifndef _NET_IP6_TUNNEL_H +#define _NET_IP6_TUNNEL_H + +#include <linux/ipv6.h> +#include <linux/netdevice.h> +#include <linux/ip6_tunnel.h> + +/* capable of sending packets */ +#define IP6_TNL_F_CAP_XMIT 0x10000 +/* capable of receiving packets */ +#define IP6_TNL_F_CAP_RCV 0x20000 + +#define IP6_TNL_MAX 128 + +/* IPv6 tunnel */ + +struct ip6_tnl { + struct ip6_tnl *next; /* next tunnel in list */ + struct net_device *dev; /* virtual device associated with tunnel */ + struct net_device_stats stat; /* statistics for tunnel device */ + int recursion; /* depth of hard_start_xmit recursion */ + struct ip6_tnl_parm parms; /* tunnel configuration paramters */ + struct flowi fl; /* flowi template for xmit */ + struct dst_entry *dst_cache; /* cached dst */ + u32 dst_cookie; +}; + +/* Tunnel encapsulation limit destination sub-option */ + +struct ipv6_tlv_tnl_enc_lim { + __u8 type; /* type-code for option */ + __u8 length; /* option length */ + __u8 encap_limit; /* tunnel encapsulation limit */ +} __attribute__ ((packed)); + +#endif diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h new file mode 100644 index 000000000000..e5a5f6b62f88 --- /dev/null +++ b/include/net/ip_fib.h @@ -0,0 +1,284 @@ +/* + * INET An implementation of the TCP/IP protocol suite for the LINUX + * operating system. INET is implemented using the BSD Socket + * interface as the means of communication with the user level. + * + * Definitions for the Forwarding Information Base. + * + * Authors: A.N.Kuznetsov, <kuznet@ms2.inr.ac.ru> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#ifndef _NET_IP_FIB_H +#define _NET_IP_FIB_H + +#include <linux/config.h> +#include <net/flow.h> +#include <linux/seq_file.h> + +/* WARNING: The ordering of these elements must match ordering + * of RTA_* rtnetlink attribute numbers. + */ +struct kern_rta { + void *rta_dst; + void *rta_src; + int *rta_iif; + int *rta_oif; + void *rta_gw; + u32 *rta_priority; + void *rta_prefsrc; + struct rtattr *rta_mx; + struct rtattr *rta_mp; + unsigned char *rta_protoinfo; + u32 *rta_flow; + struct rta_cacheinfo *rta_ci; + struct rta_session *rta_sess; + u32 *rta_mp_alg; +}; + +struct fib_info; + +struct fib_nh { + struct net_device *nh_dev; + struct hlist_node nh_hash; + struct fib_info *nh_parent; + unsigned nh_flags; + unsigned char nh_scope; +#ifdef CONFIG_IP_ROUTE_MULTIPATH + int nh_weight; + int nh_power; +#endif +#ifdef CONFIG_NET_CLS_ROUTE + __u32 nh_tclassid; +#endif + int nh_oif; + u32 nh_gw; +}; + +/* + * This structure contains data shared by many of routes. + */ + +struct fib_info { + struct hlist_node fib_hash; + struct hlist_node fib_lhash; + int fib_treeref; + atomic_t fib_clntref; + int fib_dead; + unsigned fib_flags; + int fib_protocol; + u32 fib_prefsrc; + u32 fib_priority; + u32 fib_metrics[RTAX_MAX]; +#define fib_mtu fib_metrics[RTAX_MTU-1] +#define fib_window fib_metrics[RTAX_WINDOW-1] +#define fib_rtt fib_metrics[RTAX_RTT-1] +#define fib_advmss fib_metrics[RTAX_ADVMSS-1] + int fib_nhs; +#ifdef CONFIG_IP_ROUTE_MULTIPATH + int fib_power; +#endif +#ifdef CONFIG_IP_ROUTE_MULTIPATH_CACHED + u32 fib_mp_alg; +#endif + struct fib_nh fib_nh[0]; +#define fib_dev fib_nh[0].nh_dev +}; + + +#ifdef CONFIG_IP_MULTIPLE_TABLES +struct fib_rule; +#endif + +struct fib_result { + unsigned char prefixlen; + unsigned char nh_sel; + unsigned char type; + unsigned char scope; +#ifdef CONFIG_IP_ROUTE_MULTIPATH_CACHED + __u32 network; + __u32 netmask; +#endif + struct fib_info *fi; +#ifdef CONFIG_IP_MULTIPLE_TABLES + struct fib_rule *r; +#endif +}; + + +#ifdef CONFIG_IP_ROUTE_MULTIPATH + +#define FIB_RES_NH(res) ((res).fi->fib_nh[(res).nh_sel]) +#define FIB_RES_RESET(res) ((res).nh_sel = 0) + +#else /* CONFIG_IP_ROUTE_MULTIPATH */ + +#define FIB_RES_NH(res) ((res).fi->fib_nh[0]) +#define FIB_RES_RESET(res) + +#endif /* CONFIG_IP_ROUTE_MULTIPATH */ + +#define FIB_RES_PREFSRC(res) ((res).fi->fib_prefsrc ? : __fib_res_prefsrc(&res)) +#define FIB_RES_GW(res) (FIB_RES_NH(res).nh_gw) +#define FIB_RES_DEV(res) (FIB_RES_NH(res).nh_dev) +#define FIB_RES_OIF(res) (FIB_RES_NH(res).nh_oif) + +#ifdef CONFIG_IP_ROUTE_MULTIPATH_CACHED +#define FIB_RES_NETWORK(res) ((res).network) +#define FIB_RES_NETMASK(res) ((res).netmask) +#else /* CONFIG_IP_ROUTE_MULTIPATH_CACHED */ +#define FIB_RES_NETWORK(res) (0) +#define FIB_RES_NETMASK(res) (0) +#endif /* CONFIG_IP_ROUTE_MULTIPATH_WRANDOM */ + +struct fib_table { + unsigned char tb_id; + unsigned tb_stamp; + int (*tb_lookup)(struct fib_table *tb, const struct flowi *flp, struct fib_result *res); + int (*tb_insert)(struct fib_table *table, struct rtmsg *r, + struct kern_rta *rta, struct nlmsghdr *n, + struct netlink_skb_parms *req); + int (*tb_delete)(struct fib_table *table, struct rtmsg *r, + struct kern_rta *rta, struct nlmsghdr *n, + struct netlink_skb_parms *req); + int (*tb_dump)(struct fib_table *table, struct sk_buff *skb, + struct netlink_callback *cb); + int (*tb_flush)(struct fib_table *table); + void (*tb_select_default)(struct fib_table *table, + const struct flowi *flp, struct fib_result *res); + + unsigned char tb_data[0]; +}; + +#ifndef CONFIG_IP_MULTIPLE_TABLES + +extern struct fib_table *ip_fib_local_table; +extern struct fib_table *ip_fib_main_table; + +static inline struct fib_table *fib_get_table(int id) +{ + if (id != RT_TABLE_LOCAL) + return ip_fib_main_table; + return ip_fib_local_table; +} + +static inline struct fib_table *fib_new_table(int id) +{ + return fib_get_table(id); +} + +static inline int fib_lookup(const struct flowi *flp, struct fib_result *res) +{ + if (ip_fib_local_table->tb_lookup(ip_fib_local_table, flp, res) && + ip_fib_main_table->tb_lookup(ip_fib_main_table, flp, res)) + return -ENETUNREACH; + return 0; +} + +static inline void fib_select_default(const struct flowi *flp, struct fib_result *res) +{ + if (FIB_RES_GW(*res) && FIB_RES_NH(*res).nh_scope == RT_SCOPE_LINK) + ip_fib_main_table->tb_select_default(ip_fib_main_table, flp, res); +} + +#else /* CONFIG_IP_MULTIPLE_TABLES */ +#define ip_fib_local_table (fib_tables[RT_TABLE_LOCAL]) +#define ip_fib_main_table (fib_tables[RT_TABLE_MAIN]) + +extern struct fib_table * fib_tables[RT_TABLE_MAX+1]; +extern int fib_lookup(const struct flowi *flp, struct fib_result *res); +extern struct fib_table *__fib_new_table(int id); +extern void fib_rule_put(struct fib_rule *r); + +static inline struct fib_table *fib_get_table(int id) +{ + if (id == 0) + id = RT_TABLE_MAIN; + + return fib_tables[id]; +} + +static inline struct fib_table *fib_new_table(int id) +{ + if (id == 0) + id = RT_TABLE_MAIN; + + return fib_tables[id] ? : __fib_new_table(id); +} + +extern void fib_select_default(const struct flowi *flp, struct fib_result *res); + +#endif /* CONFIG_IP_MULTIPLE_TABLES */ + +/* Exported by fib_frontend.c */ +extern void ip_fib_init(void); +extern int inet_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg); +extern int inet_rtm_newroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg); +extern int inet_rtm_getroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg); +extern int inet_dump_fib(struct sk_buff *skb, struct netlink_callback *cb); +extern int fib_validate_source(u32 src, u32 dst, u8 tos, int oif, + struct net_device *dev, u32 *spec_dst, u32 *itag); +extern void fib_select_multipath(const struct flowi *flp, struct fib_result *res); + +/* Exported by fib_semantics.c */ +extern int ip_fib_check_default(u32 gw, struct net_device *dev); +extern int fib_sync_down(u32 local, struct net_device *dev, int force); +extern int fib_sync_up(struct net_device *dev); +extern int fib_convert_rtentry(int cmd, struct nlmsghdr *nl, struct rtmsg *rtm, + struct kern_rta *rta, struct rtentry *r); +extern u32 __fib_res_prefsrc(struct fib_result *res); + +/* Exported by fib_hash.c */ +extern struct fib_table *fib_hash_init(int id); + +#ifdef CONFIG_IP_MULTIPLE_TABLES +/* Exported by fib_rules.c */ + +extern int inet_rtm_delrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg); +extern int inet_rtm_newrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg); +extern int inet_dump_rules(struct sk_buff *skb, struct netlink_callback *cb); +#ifdef CONFIG_NET_CLS_ROUTE +extern u32 fib_rules_tclass(struct fib_result *res); +#endif +extern void fib_rules_init(void); +#endif + +static inline void fib_combine_itag(u32 *itag, struct fib_result *res) +{ +#ifdef CONFIG_NET_CLS_ROUTE +#ifdef CONFIG_IP_MULTIPLE_TABLES + u32 rtag; +#endif + *itag = FIB_RES_NH(*res).nh_tclassid<<16; +#ifdef CONFIG_IP_MULTIPLE_TABLES + rtag = fib_rules_tclass(res); + if (*itag == 0) + *itag = (rtag<<16); + *itag |= (rtag>>16); +#endif +#endif +} + +extern void free_fib_info(struct fib_info *fi); + +static inline void fib_info_put(struct fib_info *fi) +{ + if (atomic_dec_and_test(&fi->fib_clntref)) + free_fib_info(fi); +} + +static inline void fib_res_put(struct fib_result *res) +{ + if (res->fi) + fib_info_put(res->fi); +#ifdef CONFIG_IP_MULTIPLE_TABLES + if (res->r) + fib_rule_put(res->r); +#endif +} + +#endif /* _NET_FIB_H */ diff --git a/include/net/ip_mp_alg.h b/include/net/ip_mp_alg.h new file mode 100644 index 000000000000..77225735cbd4 --- /dev/null +++ b/include/net/ip_mp_alg.h @@ -0,0 +1,99 @@ +/* ip_mp_alg.h: IPV4 multipath algorithm support. + * + * Copyright (C) 2004, 2005 Einar Lueck <elueck@de.ibm.com> + * Copyright (C) 2005 David S. Miller <davem@davemloft.net> + */ + +#ifndef _NET_IP_MP_ALG_H +#define _NET_IP_MP_ALG_H + +#include <linux/config.h> +#include <linux/ip_mp_alg.h> +#include <net/flow.h> +#include <net/route.h> + +struct fib_nh; + +struct ip_mp_alg_ops { + void (*mp_alg_select_route)(const struct flowi *flp, + struct rtable *rth, struct rtable **rp); + void (*mp_alg_flush)(void); + void (*mp_alg_set_nhinfo)(__u32 network, __u32 netmask, + unsigned char prefixlen, + const struct fib_nh *nh); + void (*mp_alg_remove)(struct rtable *rth); +}; + +extern int multipath_alg_register(struct ip_mp_alg_ops *, enum ip_mp_alg); +extern void multipath_alg_unregister(struct ip_mp_alg_ops *, enum ip_mp_alg); + +extern struct ip_mp_alg_ops *ip_mp_alg_table[]; + +static inline int multipath_select_route(const struct flowi *flp, + struct rtable *rth, + struct rtable **rp) +{ +#ifdef CONFIG_IP_ROUTE_MULTIPATH_CACHED + struct ip_mp_alg_ops *ops = ip_mp_alg_table[rth->rt_multipath_alg]; + + /* mp_alg_select_route _MUST_ be implemented */ + if (ops && (rth->u.dst.flags & DST_BALANCED)) { + ops->mp_alg_select_route(flp, rth, rp); + return 1; + } +#endif + return 0; +} + +static inline void multipath_flush(void) +{ +#ifdef CONFIG_IP_ROUTE_MULTIPATH_CACHED + int i; + + for (i = IP_MP_ALG_NONE; i <= IP_MP_ALG_MAX; i++) { + struct ip_mp_alg_ops *ops = ip_mp_alg_table[i]; + + if (ops && ops->mp_alg_flush) + ops->mp_alg_flush(); + } +#endif +} + +static inline void multipath_set_nhinfo(struct rtable *rth, + __u32 network, __u32 netmask, + unsigned char prefixlen, + const struct fib_nh *nh) +{ +#ifdef CONFIG_IP_ROUTE_MULTIPATH_CACHED + struct ip_mp_alg_ops *ops = ip_mp_alg_table[rth->rt_multipath_alg]; + + if (ops && ops->mp_alg_set_nhinfo) + ops->mp_alg_set_nhinfo(network, netmask, prefixlen, nh); +#endif +} + +static inline void multipath_remove(struct rtable *rth) +{ +#ifdef CONFIG_IP_ROUTE_MULTIPATH_CACHED + struct ip_mp_alg_ops *ops = ip_mp_alg_table[rth->rt_multipath_alg]; + + if (ops && ops->mp_alg_remove && + (rth->u.dst.flags & DST_BALANCED)) + ops->mp_alg_remove(rth); +#endif +} + +static inline int multipath_comparekeys(const struct flowi *flp1, + const struct flowi *flp2) +{ + return flp1->fl4_dst == flp2->fl4_dst && + flp1->fl4_src == flp2->fl4_src && + flp1->oif == flp2->oif && +#ifdef CONFIG_IP_ROUTE_FWMARK + flp1->fl4_fwmark == flp2->fl4_fwmark && +#endif + !((flp1->fl4_tos ^ flp2->fl4_tos) & + (IPTOS_RT_MASK | RTO_ONLINK)); +} + +#endif /* _NET_IP_MP_ALG_H */ diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h new file mode 100644 index 000000000000..52da5d26617a --- /dev/null +++ b/include/net/ip_vs.h @@ -0,0 +1,999 @@ +/* + * IP Virtual Server + * data structure and functionality definitions + */ + +#ifndef _IP_VS_H +#define _IP_VS_H + +#include <asm/types.h> /* For __uXX types */ + +#define IP_VS_VERSION_CODE 0x010201 +#define NVERSION(version) \ + (version >> 16) & 0xFF, \ + (version >> 8) & 0xFF, \ + version & 0xFF + +/* + * Virtual Service Flags + */ +#define IP_VS_SVC_F_PERSISTENT 0x0001 /* persistent port */ +#define IP_VS_SVC_F_HASHED 0x0002 /* hashed entry */ + +/* + * Destination Server Flags + */ +#define IP_VS_DEST_F_AVAILABLE 0x0001 /* server is available */ +#define IP_VS_DEST_F_OVERLOAD 0x0002 /* server is overloaded */ + +/* + * IPVS sync daemon states + */ +#define IP_VS_STATE_NONE 0x0000 /* daemon is stopped */ +#define IP_VS_STATE_MASTER 0x0001 /* started as master */ +#define IP_VS_STATE_BACKUP 0x0002 /* started as backup */ + +/* + * IPVS socket options + */ +#define IP_VS_BASE_CTL (64+1024+64) /* base */ + +#define IP_VS_SO_SET_NONE IP_VS_BASE_CTL /* just peek */ +#define IP_VS_SO_SET_INSERT (IP_VS_BASE_CTL+1) +#define IP_VS_SO_SET_ADD (IP_VS_BASE_CTL+2) +#define IP_VS_SO_SET_EDIT (IP_VS_BASE_CTL+3) +#define IP_VS_SO_SET_DEL (IP_VS_BASE_CTL+4) +#define IP_VS_SO_SET_FLUSH (IP_VS_BASE_CTL+5) +#define IP_VS_SO_SET_LIST (IP_VS_BASE_CTL+6) +#define IP_VS_SO_SET_ADDDEST (IP_VS_BASE_CTL+7) +#define IP_VS_SO_SET_DELDEST (IP_VS_BASE_CTL+8) +#define IP_VS_SO_SET_EDITDEST (IP_VS_BASE_CTL+9) +#define IP_VS_SO_SET_TIMEOUT (IP_VS_BASE_CTL+10) +#define IP_VS_SO_SET_STARTDAEMON (IP_VS_BASE_CTL+11) +#define IP_VS_SO_SET_STOPDAEMON (IP_VS_BASE_CTL+12) +#define IP_VS_SO_SET_RESTORE (IP_VS_BASE_CTL+13) +#define IP_VS_SO_SET_SAVE (IP_VS_BASE_CTL+14) +#define IP_VS_SO_SET_ZERO (IP_VS_BASE_CTL+15) +#define IP_VS_SO_SET_MAX IP_VS_SO_SET_ZERO + +#define IP_VS_SO_GET_VERSION IP_VS_BASE_CTL +#define IP_VS_SO_GET_INFO (IP_VS_BASE_CTL+1) +#define IP_VS_SO_GET_SERVICES (IP_VS_BASE_CTL+2) +#define IP_VS_SO_GET_SERVICE (IP_VS_BASE_CTL+3) +#define IP_VS_SO_GET_DESTS (IP_VS_BASE_CTL+4) +#define IP_VS_SO_GET_DEST (IP_VS_BASE_CTL+5) /* not used now */ +#define IP_VS_SO_GET_TIMEOUT (IP_VS_BASE_CTL+6) +#define IP_VS_SO_GET_DAEMON (IP_VS_BASE_CTL+7) +#define IP_VS_SO_GET_MAX IP_VS_SO_GET_DAEMON + + +/* + * IPVS Connection Flags + */ +#define IP_VS_CONN_F_FWD_MASK 0x0007 /* mask for the fwd methods */ +#define IP_VS_CONN_F_MASQ 0x0000 /* masquerading/NAT */ +#define IP_VS_CONN_F_LOCALNODE 0x0001 /* local node */ +#define IP_VS_CONN_F_TUNNEL 0x0002 /* tunneling */ +#define IP_VS_CONN_F_DROUTE 0x0003 /* direct routing */ +#define IP_VS_CONN_F_BYPASS 0x0004 /* cache bypass */ +#define IP_VS_CONN_F_SYNC 0x0020 /* entry created by sync */ +#define IP_VS_CONN_F_HASHED 0x0040 /* hashed entry */ +#define IP_VS_CONN_F_NOOUTPUT 0x0080 /* no output packets */ +#define IP_VS_CONN_F_INACTIVE 0x0100 /* not established */ +#define IP_VS_CONN_F_OUT_SEQ 0x0200 /* must do output seq adjust */ +#define IP_VS_CONN_F_IN_SEQ 0x0400 /* must do input seq adjust */ +#define IP_VS_CONN_F_SEQ_MASK 0x0600 /* in/out sequence mask */ +#define IP_VS_CONN_F_NO_CPORT 0x0800 /* no client port set yet */ + +/* Move it to better place one day, for now keep it unique */ +#define NFC_IPVS_PROPERTY 0x10000 + +#define IP_VS_SCHEDNAME_MAXLEN 16 +#define IP_VS_IFNAME_MAXLEN 16 + + +/* + * The struct ip_vs_service_user and struct ip_vs_dest_user are + * used to set IPVS rules through setsockopt. + */ +struct ip_vs_service_user { + /* virtual service addresses */ + u_int16_t protocol; + u_int32_t addr; /* virtual ip address */ + u_int16_t port; + u_int32_t fwmark; /* firwall mark of service */ + + /* virtual service options */ + char sched_name[IP_VS_SCHEDNAME_MAXLEN]; + unsigned flags; /* virtual service flags */ + unsigned timeout; /* persistent timeout in sec */ + u_int32_t netmask; /* persistent netmask */ +}; + + +struct ip_vs_dest_user { + /* destination server address */ + u_int32_t addr; + u_int16_t port; + + /* real server options */ + unsigned conn_flags; /* connection flags */ + int weight; /* destination weight */ + + /* thresholds for active connections */ + u_int32_t u_threshold; /* upper threshold */ + u_int32_t l_threshold; /* lower threshold */ +}; + + +/* + * IPVS statistics object (for user space) + */ +struct ip_vs_stats_user +{ + __u32 conns; /* connections scheduled */ + __u32 inpkts; /* incoming packets */ + __u32 outpkts; /* outgoing packets */ + __u64 inbytes; /* incoming bytes */ + __u64 outbytes; /* outgoing bytes */ + + __u32 cps; /* current connection rate */ + __u32 inpps; /* current in packet rate */ + __u32 outpps; /* current out packet rate */ + __u32 inbps; /* current in byte rate */ + __u32 outbps; /* current out byte rate */ +}; + + +/* The argument to IP_VS_SO_GET_INFO */ +struct ip_vs_getinfo { + /* version number */ + unsigned int version; + + /* size of connection hash table */ + unsigned int size; + + /* number of virtual services */ + unsigned int num_services; +}; + + +/* The argument to IP_VS_SO_GET_SERVICE */ +struct ip_vs_service_entry { + /* which service: user fills in these */ + u_int16_t protocol; + u_int32_t addr; /* virtual address */ + u_int16_t port; + u_int32_t fwmark; /* firwall mark of service */ + + /* service options */ + char sched_name[IP_VS_SCHEDNAME_MAXLEN]; + unsigned flags; /* virtual service flags */ + unsigned timeout; /* persistent timeout */ + u_int32_t netmask; /* persistent netmask */ + + /* number of real servers */ + unsigned int num_dests; + + /* statistics */ + struct ip_vs_stats_user stats; +}; + + +struct ip_vs_dest_entry { + u_int32_t addr; /* destination address */ + u_int16_t port; + unsigned conn_flags; /* connection flags */ + int weight; /* destination weight */ + + u_int32_t u_threshold; /* upper threshold */ + u_int32_t l_threshold; /* lower threshold */ + + u_int32_t activeconns; /* active connections */ + u_int32_t inactconns; /* inactive connections */ + u_int32_t persistconns; /* persistent connections */ + + /* statistics */ + struct ip_vs_stats_user stats; +}; + + +/* The argument to IP_VS_SO_GET_DESTS */ +struct ip_vs_get_dests { + /* which service: user fills in these */ + u_int16_t protocol; + u_int32_t addr; /* virtual address */ + u_int16_t port; + u_int32_t fwmark; /* firwall mark of service */ + + /* number of real servers */ + unsigned int num_dests; + + /* the real servers */ + struct ip_vs_dest_entry entrytable[0]; +}; + + +/* The argument to IP_VS_SO_GET_SERVICES */ +struct ip_vs_get_services { + /* number of virtual services */ + unsigned int num_services; + + /* service table */ + struct ip_vs_service_entry entrytable[0]; +}; + + +/* The argument to IP_VS_SO_GET_TIMEOUT */ +struct ip_vs_timeout_user { + int tcp_timeout; + int tcp_fin_timeout; + int udp_timeout; +}; + + +/* The argument to IP_VS_SO_GET_DAEMON */ +struct ip_vs_daemon_user { + /* sync daemon state (master/backup) */ + int state; + + /* multicast interface name */ + char mcast_ifn[IP_VS_IFNAME_MAXLEN]; + + /* SyncID we belong to */ + int syncid; +}; + + +#ifdef __KERNEL__ + +#include <linux/config.h> +#include <linux/list.h> /* for struct list_head */ +#include <linux/spinlock.h> /* for struct rwlock_t */ +#include <linux/skbuff.h> /* for struct sk_buff */ +#include <linux/ip.h> /* for struct iphdr */ +#include <asm/atomic.h> /* for struct atomic_t */ +#include <linux/netdevice.h> /* for struct neighbour */ +#include <net/dst.h> /* for struct dst_entry */ +#include <net/tcp.h> +#include <net/udp.h> +#include <linux/compiler.h> + + +#ifdef CONFIG_IP_VS_DEBUG +extern int ip_vs_get_debug_level(void); +#define IP_VS_DBG(level, msg...) \ + do { \ + if (level <= ip_vs_get_debug_level()) \ + printk(KERN_DEBUG "IPVS: " msg); \ + } while (0) +#define IP_VS_DBG_RL(msg...) \ + do { \ + if (net_ratelimit()) \ + printk(KERN_DEBUG "IPVS: " msg); \ + } while (0) +#define IP_VS_DBG_PKT(level, pp, skb, ofs, msg) \ + do { \ + if (level <= ip_vs_get_debug_level()) \ + pp->debug_packet(pp, skb, ofs, msg); \ + } while (0) +#define IP_VS_DBG_RL_PKT(level, pp, skb, ofs, msg) \ + do { \ + if (level <= ip_vs_get_debug_level() && \ + net_ratelimit()) \ + pp->debug_packet(pp, skb, ofs, msg); \ + } while (0) +#else /* NO DEBUGGING at ALL */ +#define IP_VS_DBG(level, msg...) do {} while (0) +#define IP_VS_DBG_RL(msg...) do {} while (0) +#define IP_VS_DBG_PKT(level, pp, skb, ofs, msg) do {} while (0) +#define IP_VS_DBG_RL_PKT(level, pp, skb, ofs, msg) do {} while (0) +#endif + +#define IP_VS_BUG() BUG() +#define IP_VS_ERR(msg...) printk(KERN_ERR "IPVS: " msg) +#define IP_VS_INFO(msg...) printk(KERN_INFO "IPVS: " msg) +#define IP_VS_WARNING(msg...) \ + printk(KERN_WARNING "IPVS: " msg) +#define IP_VS_ERR_RL(msg...) \ + do { \ + if (net_ratelimit()) \ + printk(KERN_ERR "IPVS: " msg); \ + } while (0) + +#ifdef CONFIG_IP_VS_DEBUG +#define EnterFunction(level) \ + do { \ + if (level <= ip_vs_get_debug_level()) \ + printk(KERN_DEBUG "Enter: %s, %s line %i\n", \ + __FUNCTION__, __FILE__, __LINE__); \ + } while (0) +#define LeaveFunction(level) \ + do { \ + if (level <= ip_vs_get_debug_level()) \ + printk(KERN_DEBUG "Leave: %s, %s line %i\n", \ + __FUNCTION__, __FILE__, __LINE__); \ + } while (0) +#else +#define EnterFunction(level) do {} while (0) +#define LeaveFunction(level) do {} while (0) +#endif + +#define IP_VS_WAIT_WHILE(expr) while (expr) { cpu_relax(); } + + +/* + * The port number of FTP service (in network order). + */ +#define FTPPORT __constant_htons(21) +#define FTPDATA __constant_htons(20) + +/* + * IPVS sysctl variables under the /proc/sys/net/ipv4/vs/ + */ +#define NET_IPV4_VS 21 + +enum { + NET_IPV4_VS_DEBUG_LEVEL=1, + NET_IPV4_VS_AMEMTHRESH=2, + NET_IPV4_VS_AMDROPRATE=3, + NET_IPV4_VS_DROP_ENTRY=4, + NET_IPV4_VS_DROP_PACKET=5, + NET_IPV4_VS_SECURE_TCP=6, + NET_IPV4_VS_TO_ES=7, + NET_IPV4_VS_TO_SS=8, + NET_IPV4_VS_TO_SR=9, + NET_IPV4_VS_TO_FW=10, + NET_IPV4_VS_TO_TW=11, + NET_IPV4_VS_TO_CL=12, + NET_IPV4_VS_TO_CW=13, + NET_IPV4_VS_TO_LA=14, + NET_IPV4_VS_TO_LI=15, + NET_IPV4_VS_TO_SA=16, + NET_IPV4_VS_TO_UDP=17, + NET_IPV4_VS_TO_ICMP=18, + NET_IPV4_VS_LBLC_EXPIRE=19, + NET_IPV4_VS_LBLCR_EXPIRE=20, + NET_IPV4_VS_CACHE_BYPASS=22, + NET_IPV4_VS_EXPIRE_NODEST_CONN=23, + NET_IPV4_VS_SYNC_THRESHOLD=24, + NET_IPV4_VS_NAT_ICMP_SEND=25, + NET_IPV4_VS_EXPIRE_QUIESCENT_TEMPLATE=26, + NET_IPV4_VS_LAST +}; + +/* + * TCP State Values + */ +enum { + IP_VS_TCP_S_NONE = 0, + IP_VS_TCP_S_ESTABLISHED, + IP_VS_TCP_S_SYN_SENT, + IP_VS_TCP_S_SYN_RECV, + IP_VS_TCP_S_FIN_WAIT, + IP_VS_TCP_S_TIME_WAIT, + IP_VS_TCP_S_CLOSE, + IP_VS_TCP_S_CLOSE_WAIT, + IP_VS_TCP_S_LAST_ACK, + IP_VS_TCP_S_LISTEN, + IP_VS_TCP_S_SYNACK, + IP_VS_TCP_S_LAST +}; + +/* + * UDP State Values + */ +enum { + IP_VS_UDP_S_NORMAL, + IP_VS_UDP_S_LAST, +}; + +/* + * ICMP State Values + */ +enum { + IP_VS_ICMP_S_NORMAL, + IP_VS_ICMP_S_LAST, +}; + +/* + * Delta sequence info structure + * Each ip_vs_conn has 2 (output AND input seq. changes). + * Only used in the VS/NAT. + */ +struct ip_vs_seq { + __u32 init_seq; /* Add delta from this seq */ + __u32 delta; /* Delta in sequence numbers */ + __u32 previous_delta; /* Delta in sequence numbers + before last resized pkt */ +}; + + +/* + * IPVS statistics object + */ +struct ip_vs_stats +{ + __u32 conns; /* connections scheduled */ + __u32 inpkts; /* incoming packets */ + __u32 outpkts; /* outgoing packets */ + __u64 inbytes; /* incoming bytes */ + __u64 outbytes; /* outgoing bytes */ + + __u32 cps; /* current connection rate */ + __u32 inpps; /* current in packet rate */ + __u32 outpps; /* current out packet rate */ + __u32 inbps; /* current in byte rate */ + __u32 outbps; /* current out byte rate */ + + spinlock_t lock; /* spin lock */ +}; + +struct ip_vs_conn; +struct ip_vs_app; + +struct ip_vs_protocol { + struct ip_vs_protocol *next; + char *name; + __u16 protocol; + int dont_defrag; + atomic_t appcnt; /* counter of proto app incs */ + int *timeout_table; /* protocol timeout table */ + + void (*init)(struct ip_vs_protocol *pp); + + void (*exit)(struct ip_vs_protocol *pp); + + int (*conn_schedule)(struct sk_buff *skb, + struct ip_vs_protocol *pp, + int *verdict, struct ip_vs_conn **cpp); + + struct ip_vs_conn * + (*conn_in_get)(const struct sk_buff *skb, + struct ip_vs_protocol *pp, + const struct iphdr *iph, + unsigned int proto_off, + int inverse); + + struct ip_vs_conn * + (*conn_out_get)(const struct sk_buff *skb, + struct ip_vs_protocol *pp, + const struct iphdr *iph, + unsigned int proto_off, + int inverse); + + int (*snat_handler)(struct sk_buff **pskb, + struct ip_vs_protocol *pp, struct ip_vs_conn *cp); + + int (*dnat_handler)(struct sk_buff **pskb, + struct ip_vs_protocol *pp, struct ip_vs_conn *cp); + + int (*csum_check)(struct sk_buff *skb, struct ip_vs_protocol *pp); + + const char *(*state_name)(int state); + + int (*state_transition)(struct ip_vs_conn *cp, int direction, + const struct sk_buff *skb, + struct ip_vs_protocol *pp); + + int (*register_app)(struct ip_vs_app *inc); + + void (*unregister_app)(struct ip_vs_app *inc); + + int (*app_conn_bind)(struct ip_vs_conn *cp); + + void (*debug_packet)(struct ip_vs_protocol *pp, + const struct sk_buff *skb, + int offset, + const char *msg); + + void (*timeout_change)(struct ip_vs_protocol *pp, int flags); + + int (*set_state_timeout)(struct ip_vs_protocol *pp, char *sname, int to); +}; + +extern struct ip_vs_protocol * ip_vs_proto_get(unsigned short proto); + +/* + * IP_VS structure allocated for each dynamically scheduled connection + */ +struct ip_vs_conn { + struct list_head c_list; /* hashed list heads */ + + /* Protocol, addresses and port numbers */ + __u32 caddr; /* client address */ + __u32 vaddr; /* virtual address */ + __u32 daddr; /* destination address */ + __u16 cport; + __u16 vport; + __u16 dport; + __u16 protocol; /* Which protocol (TCP/UDP) */ + + /* counter and timer */ + atomic_t refcnt; /* reference count */ + struct timer_list timer; /* Expiration timer */ + volatile unsigned long timeout; /* timeout */ + + /* Flags and state transition */ + spinlock_t lock; /* lock for state transition */ + volatile __u16 flags; /* status flags */ + volatile __u16 state; /* state info */ + + /* Control members */ + struct ip_vs_conn *control; /* Master control connection */ + atomic_t n_control; /* Number of controlled ones */ + struct ip_vs_dest *dest; /* real server */ + atomic_t in_pkts; /* incoming packet counter */ + + /* packet transmitter for different forwarding methods. If it + mangles the packet, it must return NF_DROP or better NF_STOLEN, + otherwise this must be changed to a sk_buff **. + */ + int (*packet_xmit)(struct sk_buff *skb, struct ip_vs_conn *cp, + struct ip_vs_protocol *pp); + + /* Note: we can group the following members into a structure, + in order to save more space, and the following members are + only used in VS/NAT anyway */ + struct ip_vs_app *app; /* bound ip_vs_app object */ + void *app_data; /* Application private data */ + struct ip_vs_seq in_seq; /* incoming seq. struct */ + struct ip_vs_seq out_seq; /* outgoing seq. struct */ +}; + + +/* + * The information about the virtual service offered to the net + * and the forwarding entries + */ +struct ip_vs_service { + struct list_head s_list; /* for normal service table */ + struct list_head f_list; /* for fwmark-based service table */ + atomic_t refcnt; /* reference counter */ + atomic_t usecnt; /* use counter */ + + __u16 protocol; /* which protocol (TCP/UDP) */ + __u32 addr; /* IP address for virtual service */ + __u16 port; /* port number for the service */ + __u32 fwmark; /* firewall mark of the service */ + unsigned flags; /* service status flags */ + unsigned timeout; /* persistent timeout in ticks */ + __u32 netmask; /* grouping granularity */ + + struct list_head destinations; /* real server d-linked list */ + __u32 num_dests; /* number of servers */ + struct ip_vs_stats stats; /* statistics for the service */ + struct ip_vs_app *inc; /* bind conns to this app inc */ + + /* for scheduling */ + struct ip_vs_scheduler *scheduler; /* bound scheduler object */ + rwlock_t sched_lock; /* lock sched_data */ + void *sched_data; /* scheduler application data */ +}; + + +/* + * The real server destination forwarding entry + * with ip address, port number, and so on. + */ +struct ip_vs_dest { + struct list_head n_list; /* for the dests in the service */ + struct list_head d_list; /* for table with all the dests */ + + __u32 addr; /* IP address of the server */ + __u16 port; /* port number of the server */ + volatile unsigned flags; /* dest status flags */ + atomic_t conn_flags; /* flags to copy to conn */ + atomic_t weight; /* server weight */ + + atomic_t refcnt; /* reference counter */ + struct ip_vs_stats stats; /* statistics */ + + /* connection counters and thresholds */ + atomic_t activeconns; /* active connections */ + atomic_t inactconns; /* inactive connections */ + atomic_t persistconns; /* persistent connections */ + __u32 u_threshold; /* upper threshold */ + __u32 l_threshold; /* lower threshold */ + + /* for destination cache */ + spinlock_t dst_lock; /* lock of dst_cache */ + struct dst_entry *dst_cache; /* destination cache entry */ + u32 dst_rtos; /* RT_TOS(tos) for dst */ + + /* for virtual service */ + struct ip_vs_service *svc; /* service it belongs to */ + __u16 protocol; /* which protocol (TCP/UDP) */ + __u32 vaddr; /* virtual IP address */ + __u16 vport; /* virtual port number */ + __u32 vfwmark; /* firewall mark of service */ +}; + + +/* + * The scheduler object + */ +struct ip_vs_scheduler { + struct list_head n_list; /* d-linked list head */ + char *name; /* scheduler name */ + atomic_t refcnt; /* reference counter */ + struct module *module; /* THIS_MODULE/NULL */ + + /* scheduler initializing service */ + int (*init_service)(struct ip_vs_service *svc); + /* scheduling service finish */ + int (*done_service)(struct ip_vs_service *svc); + /* scheduler updating service */ + int (*update_service)(struct ip_vs_service *svc); + + /* selecting a server from the given service */ + struct ip_vs_dest* (*schedule)(struct ip_vs_service *svc, + const struct sk_buff *skb); +}; + + +/* + * The application module object (a.k.a. app incarnation) + */ +struct ip_vs_app +{ + struct list_head a_list; /* member in app list */ + int type; /* IP_VS_APP_TYPE_xxx */ + char *name; /* application module name */ + __u16 protocol; + struct module *module; /* THIS_MODULE/NULL */ + struct list_head incs_list; /* list of incarnations */ + + /* members for application incarnations */ + struct list_head p_list; /* member in proto app list */ + struct ip_vs_app *app; /* its real application */ + __u16 port; /* port number in net order */ + atomic_t usecnt; /* usage counter */ + + /* output hook: return false if can't linearize. diff set for TCP. */ + int (*pkt_out)(struct ip_vs_app *, struct ip_vs_conn *, + struct sk_buff **, int *diff); + + /* input hook: return false if can't linearize. diff set for TCP. */ + int (*pkt_in)(struct ip_vs_app *, struct ip_vs_conn *, + struct sk_buff **, int *diff); + + /* ip_vs_app initializer */ + int (*init_conn)(struct ip_vs_app *, struct ip_vs_conn *); + + /* ip_vs_app finish */ + int (*done_conn)(struct ip_vs_app *, struct ip_vs_conn *); + + + /* not used now */ + int (*bind_conn)(struct ip_vs_app *, struct ip_vs_conn *, + struct ip_vs_protocol *); + + void (*unbind_conn)(struct ip_vs_app *, struct ip_vs_conn *); + + int * timeout_table; + int * timeouts; + int timeouts_size; + + int (*conn_schedule)(struct sk_buff *skb, struct ip_vs_app *app, + int *verdict, struct ip_vs_conn **cpp); + + struct ip_vs_conn * + (*conn_in_get)(const struct sk_buff *skb, struct ip_vs_app *app, + const struct iphdr *iph, unsigned int proto_off, + int inverse); + + struct ip_vs_conn * + (*conn_out_get)(const struct sk_buff *skb, struct ip_vs_app *app, + const struct iphdr *iph, unsigned int proto_off, + int inverse); + + int (*state_transition)(struct ip_vs_conn *cp, int direction, + const struct sk_buff *skb, + struct ip_vs_app *app); + + void (*timeout_change)(struct ip_vs_app *app, int flags); +}; + + +/* + * IPVS core functions + * (from ip_vs_core.c) + */ +extern const char *ip_vs_proto_name(unsigned proto); +extern void ip_vs_init_hash_table(struct list_head *table, int rows); +#define IP_VS_INIT_HASH_TABLE(t) ip_vs_init_hash_table(t, sizeof(t)/sizeof(t[0])) + +#define IP_VS_APP_TYPE_UNSPEC 0 +#define IP_VS_APP_TYPE_FTP 1 + +/* + * ip_vs_conn handling functions + * (from ip_vs_conn.c) + */ + +/* + * IPVS connection entry hash table + */ +#ifndef CONFIG_IP_VS_TAB_BITS +#define CONFIG_IP_VS_TAB_BITS 12 +#endif +/* make sure that IP_VS_CONN_TAB_BITS is located in [8, 20] */ +#if CONFIG_IP_VS_TAB_BITS < 8 +#define IP_VS_CONN_TAB_BITS 8 +#endif +#if CONFIG_IP_VS_TAB_BITS > 20 +#define IP_VS_CONN_TAB_BITS 20 +#endif +#if 8 <= CONFIG_IP_VS_TAB_BITS && CONFIG_IP_VS_TAB_BITS <= 20 +#define IP_VS_CONN_TAB_BITS CONFIG_IP_VS_TAB_BITS +#endif +#define IP_VS_CONN_TAB_SIZE (1 << IP_VS_CONN_TAB_BITS) +#define IP_VS_CONN_TAB_MASK (IP_VS_CONN_TAB_SIZE - 1) + +enum { + IP_VS_DIR_INPUT = 0, + IP_VS_DIR_OUTPUT, + IP_VS_DIR_INPUT_ONLY, + IP_VS_DIR_LAST, +}; + +extern struct ip_vs_conn *ip_vs_conn_in_get +(int protocol, __u32 s_addr, __u16 s_port, __u32 d_addr, __u16 d_port); +extern struct ip_vs_conn *ip_vs_conn_out_get +(int protocol, __u32 s_addr, __u16 s_port, __u32 d_addr, __u16 d_port); + +/* put back the conn without restarting its timer */ +static inline void __ip_vs_conn_put(struct ip_vs_conn *cp) +{ + atomic_dec(&cp->refcnt); +} +extern void ip_vs_conn_put(struct ip_vs_conn *cp); +extern void ip_vs_conn_fill_cport(struct ip_vs_conn *cp, __u16 cport); + +extern struct ip_vs_conn * +ip_vs_conn_new(int proto, __u32 caddr, __u16 cport, __u32 vaddr, __u16 vport, + __u32 daddr, __u16 dport, unsigned flags, + struct ip_vs_dest *dest); +extern void ip_vs_conn_expire_now(struct ip_vs_conn *cp); + +extern const char * ip_vs_state_name(__u16 proto, int state); + +extern void ip_vs_tcp_conn_listen(struct ip_vs_conn *cp); +extern int ip_vs_check_template(struct ip_vs_conn *ct); +extern void ip_vs_secure_tcp_set(int on); +extern void ip_vs_random_dropentry(void); +extern int ip_vs_conn_init(void); +extern void ip_vs_conn_cleanup(void); + +static inline void ip_vs_control_del(struct ip_vs_conn *cp) +{ + struct ip_vs_conn *ctl_cp = cp->control; + if (!ctl_cp) { + IP_VS_ERR("request control DEL for uncontrolled: " + "%d.%d.%d.%d:%d to %d.%d.%d.%d:%d\n", + NIPQUAD(cp->caddr),ntohs(cp->cport), + NIPQUAD(cp->vaddr),ntohs(cp->vport)); + return; + } + + IP_VS_DBG(7, "DELeting control for: " + "cp.dst=%d.%d.%d.%d:%d ctl_cp.dst=%d.%d.%d.%d:%d\n", + NIPQUAD(cp->caddr),ntohs(cp->cport), + NIPQUAD(ctl_cp->caddr),ntohs(ctl_cp->cport)); + + cp->control = NULL; + if (atomic_read(&ctl_cp->n_control) == 0) { + IP_VS_ERR("BUG control DEL with n=0 : " + "%d.%d.%d.%d:%d to %d.%d.%d.%d:%d\n", + NIPQUAD(cp->caddr),ntohs(cp->cport), + NIPQUAD(cp->vaddr),ntohs(cp->vport)); + return; + } + atomic_dec(&ctl_cp->n_control); +} + +static inline void +ip_vs_control_add(struct ip_vs_conn *cp, struct ip_vs_conn *ctl_cp) +{ + if (cp->control) { + IP_VS_ERR("request control ADD for already controlled: " + "%d.%d.%d.%d:%d to %d.%d.%d.%d:%d\n", + NIPQUAD(cp->caddr),ntohs(cp->cport), + NIPQUAD(cp->vaddr),ntohs(cp->vport)); + ip_vs_control_del(cp); + } + + IP_VS_DBG(7, "ADDing control for: " + "cp.dst=%d.%d.%d.%d:%d ctl_cp.dst=%d.%d.%d.%d:%d\n", + NIPQUAD(cp->caddr),ntohs(cp->cport), + NIPQUAD(ctl_cp->caddr),ntohs(ctl_cp->cport)); + + cp->control = ctl_cp; + atomic_inc(&ctl_cp->n_control); +} + + +/* + * IPVS application functions + * (from ip_vs_app.c) + */ +#define IP_VS_APP_MAX_PORTS 8 +extern int register_ip_vs_app(struct ip_vs_app *app); +extern void unregister_ip_vs_app(struct ip_vs_app *app); +extern int ip_vs_bind_app(struct ip_vs_conn *cp, struct ip_vs_protocol *pp); +extern void ip_vs_unbind_app(struct ip_vs_conn *cp); +extern int +register_ip_vs_app_inc(struct ip_vs_app *app, __u16 proto, __u16 port); +extern int ip_vs_app_inc_get(struct ip_vs_app *inc); +extern void ip_vs_app_inc_put(struct ip_vs_app *inc); + +extern int ip_vs_app_pkt_out(struct ip_vs_conn *, struct sk_buff **pskb); +extern int ip_vs_app_pkt_in(struct ip_vs_conn *, struct sk_buff **pskb); +extern int ip_vs_skb_replace(struct sk_buff *skb, int pri, + char *o_buf, int o_len, char *n_buf, int n_len); +extern int ip_vs_app_init(void); +extern void ip_vs_app_cleanup(void); + + +/* + * IPVS protocol functions (from ip_vs_proto.c) + */ +extern int ip_vs_protocol_init(void); +extern void ip_vs_protocol_cleanup(void); +extern void ip_vs_protocol_timeout_change(int flags); +extern int *ip_vs_create_timeout_table(int *table, int size); +extern int +ip_vs_set_state_timeout(int *table, int num, char **names, char *name, int to); +extern void +ip_vs_tcpudp_debug_packet(struct ip_vs_protocol *pp, const struct sk_buff *skb, + int offset, const char *msg); + +extern struct ip_vs_protocol ip_vs_protocol_tcp; +extern struct ip_vs_protocol ip_vs_protocol_udp; +extern struct ip_vs_protocol ip_vs_protocol_icmp; +extern struct ip_vs_protocol ip_vs_protocol_esp; +extern struct ip_vs_protocol ip_vs_protocol_ah; + + +/* + * Registering/unregistering scheduler functions + * (from ip_vs_sched.c) + */ +extern int register_ip_vs_scheduler(struct ip_vs_scheduler *scheduler); +extern int unregister_ip_vs_scheduler(struct ip_vs_scheduler *scheduler); +extern int ip_vs_bind_scheduler(struct ip_vs_service *svc, + struct ip_vs_scheduler *scheduler); +extern int ip_vs_unbind_scheduler(struct ip_vs_service *svc); +extern struct ip_vs_scheduler *ip_vs_scheduler_get(const char *sched_name); +extern void ip_vs_scheduler_put(struct ip_vs_scheduler *scheduler); +extern struct ip_vs_conn * +ip_vs_schedule(struct ip_vs_service *svc, const struct sk_buff *skb); +extern int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb, + struct ip_vs_protocol *pp); + + +/* + * IPVS control data and functions (from ip_vs_ctl.c) + */ +extern int sysctl_ip_vs_cache_bypass; +extern int sysctl_ip_vs_expire_nodest_conn; +extern int sysctl_ip_vs_expire_quiescent_template; +extern int sysctl_ip_vs_sync_threshold[2]; +extern int sysctl_ip_vs_nat_icmp_send; +extern struct ip_vs_stats ip_vs_stats; + +extern struct ip_vs_service * +ip_vs_service_get(__u32 fwmark, __u16 protocol, __u32 vaddr, __u16 vport); + +static inline void ip_vs_service_put(struct ip_vs_service *svc) +{ + atomic_dec(&svc->usecnt); +} + +extern struct ip_vs_dest * +ip_vs_lookup_real_service(__u16 protocol, __u32 daddr, __u16 dport); +extern int ip_vs_use_count_inc(void); +extern void ip_vs_use_count_dec(void); +extern int ip_vs_control_init(void); +extern void ip_vs_control_cleanup(void); + + +/* + * IPVS sync daemon data and function prototypes + * (from ip_vs_sync.c) + */ +extern volatile int ip_vs_sync_state; +extern volatile int ip_vs_master_syncid; +extern volatile int ip_vs_backup_syncid; +extern char ip_vs_master_mcast_ifn[IP_VS_IFNAME_MAXLEN]; +extern char ip_vs_backup_mcast_ifn[IP_VS_IFNAME_MAXLEN]; +extern int start_sync_thread(int state, char *mcast_ifn, __u8 syncid); +extern int stop_sync_thread(int state); +extern void ip_vs_sync_conn(struct ip_vs_conn *cp); + + +/* + * IPVS rate estimator prototypes (from ip_vs_est.c) + */ +extern int ip_vs_new_estimator(struct ip_vs_stats *stats); +extern void ip_vs_kill_estimator(struct ip_vs_stats *stats); +extern void ip_vs_zero_estimator(struct ip_vs_stats *stats); + +/* + * Various IPVS packet transmitters (from ip_vs_xmit.c) + */ +extern int ip_vs_null_xmit +(struct sk_buff *skb, struct ip_vs_conn *cp, struct ip_vs_protocol *pp); +extern int ip_vs_bypass_xmit +(struct sk_buff *skb, struct ip_vs_conn *cp, struct ip_vs_protocol *pp); +extern int ip_vs_nat_xmit +(struct sk_buff *skb, struct ip_vs_conn *cp, struct ip_vs_protocol *pp); +extern int ip_vs_tunnel_xmit +(struct sk_buff *skb, struct ip_vs_conn *cp, struct ip_vs_protocol *pp); +extern int ip_vs_dr_xmit +(struct sk_buff *skb, struct ip_vs_conn *cp, struct ip_vs_protocol *pp); +extern int ip_vs_icmp_xmit +(struct sk_buff *skb, struct ip_vs_conn *cp, struct ip_vs_protocol *pp, int offset); +extern void ip_vs_dst_reset(struct ip_vs_dest *dest); + + +/* + * This is a simple mechanism to ignore packets when + * we are loaded. Just set ip_vs_drop_rate to 'n' and + * we start to drop 1/rate of the packets + */ +extern int ip_vs_drop_rate; +extern int ip_vs_drop_counter; + +static __inline__ int ip_vs_todrop(void) +{ + if (!ip_vs_drop_rate) return 0; + if (--ip_vs_drop_counter > 0) return 0; + ip_vs_drop_counter = ip_vs_drop_rate; + return 1; +} + +/* + * ip_vs_fwd_tag returns the forwarding tag of the connection + */ +#define IP_VS_FWD_METHOD(cp) (cp->flags & IP_VS_CONN_F_FWD_MASK) + +extern __inline__ char ip_vs_fwd_tag(struct ip_vs_conn *cp) +{ + char fwd; + + switch (IP_VS_FWD_METHOD(cp)) { + case IP_VS_CONN_F_MASQ: + fwd = 'M'; break; + case IP_VS_CONN_F_LOCALNODE: + fwd = 'L'; break; + case IP_VS_CONN_F_TUNNEL: + fwd = 'T'; break; + case IP_VS_CONN_F_DROUTE: + fwd = 'R'; break; + case IP_VS_CONN_F_BYPASS: + fwd = 'B'; break; + default: + fwd = '?'; break; + } + return fwd; +} + +extern int ip_vs_make_skb_writable(struct sk_buff **pskb, int len); +extern void ip_vs_nat_icmp(struct sk_buff *skb, struct ip_vs_protocol *pp, + struct ip_vs_conn *cp, int dir); + +extern u16 ip_vs_checksum_complete(struct sk_buff *skb, int offset); + +static inline u16 ip_vs_check_diff(u32 old, u32 new, u16 oldsum) +{ + u32 diff[2] = { old, new }; + + return csum_fold(csum_partial((char *) diff, sizeof(diff), + oldsum ^ 0xFFFF)); +} + +#endif /* __KERNEL__ */ + +#endif /* _IP_VS_H */ diff --git a/include/net/ipcomp.h b/include/net/ipcomp.h new file mode 100644 index 000000000000..e651a57ecdd5 --- /dev/null +++ b/include/net/ipcomp.h @@ -0,0 +1,11 @@ +#ifndef _NET_IPCOMP_H +#define _NET_IPCOMP_H + +#define IPCOMP_SCRATCH_SIZE 65400 + +struct ipcomp_data { + u16 threshold; + struct crypto_tfm **tfms; +}; + +#endif diff --git a/include/net/ipconfig.h b/include/net/ipconfig.h new file mode 100644 index 000000000000..2a1fe996fbc6 --- /dev/null +++ b/include/net/ipconfig.h @@ -0,0 +1,27 @@ +/* + * $Id: ipconfig.h,v 1.4 2001/04/30 04:51:46 davem Exp $ + * + * Copyright (C) 1997 Martin Mares + * + * Automatic IP Layer Configuration + */ + +/* The following are initdata: */ + +extern int ic_proto_enabled; /* Protocols enabled (see IC_xxx) */ +extern int ic_set_manually; /* IPconfig parameters set manually */ + +extern u32 ic_myaddr; /* My IP address */ +extern u32 ic_gateway; /* Gateway IP address */ + +extern u32 ic_servaddr; /* Boot server IP address */ + +extern u32 root_server_addr; /* Address of NFS server */ +extern u8 root_server_path[]; /* Path to mount as root */ + + +/* bits in ic_proto_{enabled,used} */ +#define IC_PROTO 0xFF /* Protocols mask: */ +#define IC_BOOTP 0x01 /* BOOTP (or DHCP, see below) */ +#define IC_RARP 0x02 /* RARP */ +#define IC_USE_DHCP 0x100 /* If on, use DHCP instead of BOOTP */ diff --git a/include/net/ipip.h b/include/net/ipip.h new file mode 100644 index 000000000000..f490c3cbe377 --- /dev/null +++ b/include/net/ipip.h @@ -0,0 +1,51 @@ +#ifndef __NET_IPIP_H +#define __NET_IPIP_H 1 + +#include <linux/if_tunnel.h> + +/* Keep error state on tunnel for 30 sec */ +#define IPTUNNEL_ERR_TIMEO (30*HZ) + +struct ip_tunnel +{ + struct ip_tunnel *next; + struct net_device *dev; + struct net_device_stats stat; + + int recursion; /* Depth of hard_start_xmit recursion */ + int err_count; /* Number of arrived ICMP errors */ + unsigned long err_time; /* Time when the last ICMP error arrived */ + + /* These four fields used only by GRE */ + __u32 i_seqno; /* The last seen seqno */ + __u32 o_seqno; /* The last output seqno */ + int hlen; /* Precalculated GRE header length */ + int mlink; + + struct ip_tunnel_parm parms; +}; + +#define IPTUNNEL_XMIT() do { \ + int err; \ + int pkt_len = skb->len; \ + \ + skb->ip_summed = CHECKSUM_NONE; \ + iph->tot_len = htons(skb->len); \ + ip_select_ident(iph, &rt->u.dst, NULL); \ + ip_send_check(iph); \ + \ + err = NF_HOOK(PF_INET, NF_IP_LOCAL_OUT, skb, NULL, rt->u.dst.dev, dst_output);\ + if (err == NET_XMIT_SUCCESS || err == NET_XMIT_CN) { \ + stats->tx_bytes += pkt_len; \ + stats->tx_packets++; \ + } else { \ + stats->tx_errors++; \ + stats->tx_aborted_errors++; \ + } \ +} while (0) + + +extern int sit_init(void); +extern void sit_cleanup(void); + +#endif diff --git a/include/net/ipv6.h b/include/net/ipv6.h new file mode 100644 index 000000000000..87c45cbfbaf6 --- /dev/null +++ b/include/net/ipv6.h @@ -0,0 +1,472 @@ +/* + * Linux INET6 implementation + * + * Authors: + * Pedro Roque <roque@di.fc.ul.pt> + * + * $Id: ipv6.h,v 1.1 2002/05/20 15:13:07 jgrimm Exp $ + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#ifndef _NET_IPV6_H +#define _NET_IPV6_H + +#include <linux/ipv6.h> +#include <linux/hardirq.h> +#include <net/ndisc.h> +#include <net/flow.h> +#include <net/snmp.h> + +#define SIN6_LEN_RFC2133 24 + +#define IPV6_MAXPLEN 65535 + +/* + * NextHeader field of IPv6 header + */ + +#define NEXTHDR_HOP 0 /* Hop-by-hop option header. */ +#define NEXTHDR_TCP 6 /* TCP segment. */ +#define NEXTHDR_UDP 17 /* UDP message. */ +#define NEXTHDR_IPV6 41 /* IPv6 in IPv6 */ +#define NEXTHDR_ROUTING 43 /* Routing header. */ +#define NEXTHDR_FRAGMENT 44 /* Fragmentation/reassembly header. */ +#define NEXTHDR_ESP 50 /* Encapsulating security payload. */ +#define NEXTHDR_AUTH 51 /* Authentication header. */ +#define NEXTHDR_ICMP 58 /* ICMP for IPv6. */ +#define NEXTHDR_NONE 59 /* No next header */ +#define NEXTHDR_DEST 60 /* Destination options header. */ + +#define NEXTHDR_MAX 255 + + + +#define IPV6_DEFAULT_HOPLIMIT 64 +#define IPV6_DEFAULT_MCASTHOPS 1 + +/* + * Addr type + * + * type - unicast | multicast + * scope - local | site | global + * v4 - compat + * v4mapped + * any + * loopback + */ + +#define IPV6_ADDR_ANY 0x0000U + +#define IPV6_ADDR_UNICAST 0x0001U +#define IPV6_ADDR_MULTICAST 0x0002U + +#define IPV6_ADDR_LOOPBACK 0x0010U +#define IPV6_ADDR_LINKLOCAL 0x0020U +#define IPV6_ADDR_SITELOCAL 0x0040U + +#define IPV6_ADDR_COMPATv4 0x0080U + +#define IPV6_ADDR_SCOPE_MASK 0x00f0U + +#define IPV6_ADDR_MAPPED 0x1000U +#define IPV6_ADDR_RESERVED 0x2000U /* reserved address space */ + +/* + * Addr scopes + */ +#ifdef __KERNEL__ +#define IPV6_ADDR_MC_SCOPE(a) \ + ((a)->s6_addr[1] & 0x0f) /* nonstandard */ +#define __IPV6_ADDR_SCOPE_INVALID -1 +#endif +#define IPV6_ADDR_SCOPE_NODELOCAL 0x01 +#define IPV6_ADDR_SCOPE_LINKLOCAL 0x02 +#define IPV6_ADDR_SCOPE_SITELOCAL 0x05 +#define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 +#define IPV6_ADDR_SCOPE_GLOBAL 0x0e + +/* + * fragmentation header + */ + +struct frag_hdr { + unsigned char nexthdr; + unsigned char reserved; + unsigned short frag_off; + __u32 identification; +}; + +#define IP6_MF 0x0001 + +#ifdef __KERNEL__ + +#include <net/sock.h> + +/* sysctls */ +extern int sysctl_ipv6_bindv6only; +extern int sysctl_mld_max_msf; + +/* MIBs */ +DECLARE_SNMP_STAT(struct ipstats_mib, ipv6_statistics); +#define IP6_INC_STATS(field) SNMP_INC_STATS(ipv6_statistics, field) +#define IP6_INC_STATS_BH(field) SNMP_INC_STATS_BH(ipv6_statistics, field) +#define IP6_INC_STATS_USER(field) SNMP_INC_STATS_USER(ipv6_statistics, field) +DECLARE_SNMP_STAT(struct icmpv6_mib, icmpv6_statistics); +#define ICMP6_INC_STATS(idev, field) ({ \ + struct inet6_dev *_idev = (idev); \ + if (likely(_idev != NULL)) \ + SNMP_INC_STATS(idev->stats.icmpv6, field); \ + SNMP_INC_STATS(icmpv6_statistics, field); \ +}) +#define ICMP6_INC_STATS_BH(idev, field) ({ \ + struct inet6_dev *_idev = (idev); \ + if (likely(_idev != NULL)) \ + SNMP_INC_STATS_BH((_idev)->stats.icmpv6, field); \ + SNMP_INC_STATS_BH(icmpv6_statistics, field); \ +}) +#define ICMP6_INC_STATS_USER(idev, field) ({ \ + struct inet6_dev *_idev = (idev); \ + if (likely(_idev != NULL)) \ + SNMP_INC_STATS_USER(_idev->stats.icmpv6, field); \ + SNMP_INC_STATS_USER(icmpv6_statistics, field); \ +}) +#define ICMP6_INC_STATS_OFFSET_BH(idev, field, offset) ({ \ + struct inet6_dev *_idev = idev; \ + __typeof__(offset) _offset = (offset); \ + if (likely(_idev != NULL)) \ + SNMP_INC_STATS_OFFSET_BH(_idev->stats.icmpv6, field, _offset); \ + SNMP_INC_STATS_OFFSET_BH(icmpv6_statistics, field, _offset); \ +}) +DECLARE_SNMP_STAT(struct udp_mib, udp_stats_in6); +#define UDP6_INC_STATS(field) SNMP_INC_STATS(udp_stats_in6, field) +#define UDP6_INC_STATS_BH(field) SNMP_INC_STATS_BH(udp_stats_in6, field) +#define UDP6_INC_STATS_USER(field) SNMP_INC_STATS_USER(udp_stats_in6, field) +extern atomic_t inet6_sock_nr; + +int snmp6_register_dev(struct inet6_dev *idev); +int snmp6_unregister_dev(struct inet6_dev *idev); +int snmp6_alloc_dev(struct inet6_dev *idev); +int snmp6_free_dev(struct inet6_dev *idev); +int snmp6_mib_init(void *ptr[2], size_t mibsize, size_t mibalign); +void snmp6_mib_free(void *ptr[2]); + +struct ip6_ra_chain +{ + struct ip6_ra_chain *next; + struct sock *sk; + int sel; + void (*destructor)(struct sock *); +}; + +extern struct ip6_ra_chain *ip6_ra_chain; +extern rwlock_t ip6_ra_lock; + +/* + This structure is prepared by protocol, when parsing + ancillary data and passed to IPv6. + */ + +struct ipv6_txoptions +{ + /* Length of this structure */ + int tot_len; + + /* length of extension headers */ + + __u16 opt_flen; /* after fragment hdr */ + __u16 opt_nflen; /* before fragment hdr */ + + struct ipv6_opt_hdr *hopopt; + struct ipv6_opt_hdr *dst0opt; + struct ipv6_rt_hdr *srcrt; /* Routing Header */ + struct ipv6_opt_hdr *auth; + struct ipv6_opt_hdr *dst1opt; + + /* Option buffer, as read by IPV6_PKTOPTIONS, starts here. */ +}; + +struct ip6_flowlabel +{ + struct ip6_flowlabel *next; + u32 label; + struct in6_addr dst; + struct ipv6_txoptions *opt; + atomic_t users; + unsigned long linger; + u8 share; + u32 owner; + unsigned long lastuse; + unsigned long expires; +}; + +#define IPV6_FLOWINFO_MASK __constant_htonl(0x0FFFFFFF) +#define IPV6_FLOWLABEL_MASK __constant_htonl(0x000FFFFF) + +struct ipv6_fl_socklist +{ + struct ipv6_fl_socklist *next; + struct ip6_flowlabel *fl; +}; + +extern struct ip6_flowlabel *fl6_sock_lookup(struct sock *sk, u32 label); +extern struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions * opt_space, + struct ip6_flowlabel * fl, + struct ipv6_txoptions * fopt); +extern void fl6_free_socklist(struct sock *sk); +extern int ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen); +extern void ip6_flowlabel_init(void); +extern void ip6_flowlabel_cleanup(void); + +static inline void fl6_sock_release(struct ip6_flowlabel *fl) +{ + if (fl) + atomic_dec(&fl->users); +} + +extern int ip6_ra_control(struct sock *sk, int sel, + void (*destructor)(struct sock *)); + + +extern int ipv6_parse_hopopts(struct sk_buff *skb, int); + +extern struct ipv6_txoptions * ipv6_dup_options(struct sock *sk, struct ipv6_txoptions *opt); + +extern int ip6_frag_nqueues; +extern atomic_t ip6_frag_mem; + +#define IPV6_FRAG_TIMEOUT (60*HZ) /* 60 seconds */ + +/* + * Function prototype for build_xmit + */ + +typedef int (*inet_getfrag_t) (const void *data, + struct in6_addr *addr, + char *, + unsigned int, unsigned int); + + +extern int ipv6_addr_type(const struct in6_addr *addr); + +static inline int ipv6_addr_scope(const struct in6_addr *addr) +{ + return ipv6_addr_type(addr) & IPV6_ADDR_SCOPE_MASK; +} + +static inline int ipv6_addr_cmp(const struct in6_addr *a1, const struct in6_addr *a2) +{ + return memcmp((const void *) a1, (const void *) a2, sizeof(struct in6_addr)); +} + +static inline void ipv6_addr_copy(struct in6_addr *a1, const struct in6_addr *a2) +{ + memcpy((void *) a1, (const void *) a2, sizeof(struct in6_addr)); +} + +static inline void ipv6_addr_prefix(struct in6_addr *pfx, + const struct in6_addr *addr, + int plen) +{ + /* caller must guarantee 0 <= plen <= 128 */ + int o = plen >> 3, + b = plen & 0x7; + + memcpy(pfx->s6_addr, addr, o); + if (b != 0) { + pfx->s6_addr[o] = addr->s6_addr[o] & (0xff00 >> b); + o++; + } + if (o < 16) + memset(pfx->s6_addr + o, 0, 16 - o); +} + +#ifndef __HAVE_ARCH_ADDR_SET +static inline void ipv6_addr_set(struct in6_addr *addr, + __u32 w1, __u32 w2, + __u32 w3, __u32 w4) +{ + addr->s6_addr32[0] = w1; + addr->s6_addr32[1] = w2; + addr->s6_addr32[2] = w3; + addr->s6_addr32[3] = w4; +} +#endif + +static inline int ipv6_addr_equal(const struct in6_addr *a1, + const struct in6_addr *a2) +{ + return (a1->s6_addr32[0] == a2->s6_addr32[0] && + a1->s6_addr32[1] == a2->s6_addr32[1] && + a1->s6_addr32[2] == a2->s6_addr32[2] && + a1->s6_addr32[3] == a2->s6_addr32[3]); +} + +static inline int __ipv6_prefix_equal(const u32 *a1, const u32 *a2, + unsigned int prefixlen) +{ + unsigned pdw, pbi; + + /* check complete u32 in prefix */ + pdw = prefixlen >> 5; + if (pdw && memcmp(a1, a2, pdw << 2)) + return 0; + + /* check incomplete u32 in prefix */ + pbi = prefixlen & 0x1f; + if (pbi && ((a1[pdw] ^ a2[pdw]) & htonl((0xffffffff) << (32 - pbi)))) + return 0; + + return 1; +} + +static inline int ipv6_prefix_equal(const struct in6_addr *a1, + const struct in6_addr *a2, + unsigned int prefixlen) +{ + return __ipv6_prefix_equal(a1->s6_addr32, a2->s6_addr32, + prefixlen); +} + +static inline int ipv6_addr_any(const struct in6_addr *a) +{ + return ((a->s6_addr32[0] | a->s6_addr32[1] | + a->s6_addr32[2] | a->s6_addr32[3] ) == 0); +} + +/* + * Prototypes exported by ipv6 + */ + +/* + * rcv function (called from netdevice level) + */ + +extern int ipv6_rcv(struct sk_buff *skb, + struct net_device *dev, + struct packet_type *pt); + +/* + * upper-layer output functions + */ +extern int ip6_xmit(struct sock *sk, + struct sk_buff *skb, + struct flowi *fl, + struct ipv6_txoptions *opt, + int ipfragok); + +extern int ip6_nd_hdr(struct sock *sk, + struct sk_buff *skb, + struct net_device *dev, + struct in6_addr *saddr, + struct in6_addr *daddr, + int proto, int len); + +extern int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr); + +extern int ip6_append_data(struct sock *sk, + int getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb), + void *from, + int length, + int transhdrlen, + int hlimit, + struct ipv6_txoptions *opt, + struct flowi *fl, + struct rt6_info *rt, + unsigned int flags); + +extern int ip6_push_pending_frames(struct sock *sk); + +extern void ip6_flush_pending_frames(struct sock *sk); + +extern int ip6_dst_lookup(struct sock *sk, + struct dst_entry **dst, + struct flowi *fl); + +/* + * skb processing functions + */ + +extern int ip6_output(struct sk_buff *skb); +extern int ip6_forward(struct sk_buff *skb); +extern int ip6_input(struct sk_buff *skb); +extern int ip6_mc_input(struct sk_buff *skb); + +/* + * Extension header (options) processing + */ + +extern u8 * ipv6_build_nfrag_opts(struct sk_buff *skb, + u8 *prev_hdr, + struct ipv6_txoptions *opt, + struct in6_addr *daddr, + u32 jumbolen); +extern u8 * ipv6_build_frag_opts(struct sk_buff *skb, + u8 *prev_hdr, + struct ipv6_txoptions *opt); +extern void ipv6_push_nfrag_opts(struct sk_buff *skb, + struct ipv6_txoptions *opt, + u8 *proto, + struct in6_addr **daddr_p); +extern void ipv6_push_frag_opts(struct sk_buff *skb, + struct ipv6_txoptions *opt, + u8 *proto); + +extern int ipv6_skip_exthdr(const struct sk_buff *, int start, + u8 *nexthdrp, int len); + +extern int ipv6_ext_hdr(u8 nexthdr); + +extern struct ipv6_txoptions * ipv6_invert_rthdr(struct sock *sk, + struct ipv6_rt_hdr *hdr); + + +/* + * socket options (ipv6_sockglue.c) + */ + +extern int ipv6_setsockopt(struct sock *sk, int level, + int optname, + char __user *optval, + int optlen); +extern int ipv6_getsockopt(struct sock *sk, int level, + int optname, + char __user *optval, + int __user *optlen); + +extern void ipv6_packet_init(void); + +extern void ipv6_packet_cleanup(void); + +extern int ip6_datagram_connect(struct sock *sk, + struct sockaddr *addr, int addr_len); + +extern int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len); +extern void ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err, u16 port, + u32 info, u8 *payload); +extern void ipv6_local_error(struct sock *sk, int err, struct flowi *fl, u32 info); + +extern int inet6_release(struct socket *sock); +extern int inet6_bind(struct socket *sock, struct sockaddr *uaddr, + int addr_len); +extern int inet6_getname(struct socket *sock, struct sockaddr *uaddr, + int *uaddr_len, int peer); +extern int inet6_ioctl(struct socket *sock, unsigned int cmd, + unsigned long arg); + +/* + * reassembly.c + */ +extern int sysctl_ip6frag_high_thresh; +extern int sysctl_ip6frag_low_thresh; +extern int sysctl_ip6frag_time; +extern int sysctl_ip6frag_secret_interval; + +#endif /* __KERNEL__ */ +#endif /* _NET_IPV6_H */ + + + diff --git a/include/net/ipx.h b/include/net/ipx.h new file mode 100644 index 000000000000..5c0cf33826c5 --- /dev/null +++ b/include/net/ipx.h @@ -0,0 +1,161 @@ +#ifndef _NET_INET_IPX_H_ +#define _NET_INET_IPX_H_ +/* + * The following information is in its entirety obtained from: + * + * Novell 'IPX Router Specification' Version 1.10 + * Part No. 107-000029-001 + * + * Which is available from ftp.novell.com + */ + +#include <linux/netdevice.h> +#include <net/datalink.h> +#include <linux/ipx.h> +#include <linux/list.h> + +struct ipx_address { + __u32 net; + __u8 node[IPX_NODE_LEN]; + __u16 sock; +}; + +#define ipx_broadcast_node "\377\377\377\377\377\377" +#define ipx_this_node "\0\0\0\0\0\0" + +#define IPX_MAX_PPROP_HOPS 8 + +struct ipxhdr { + __u16 ipx_checksum __attribute__ ((packed)); +#define IPX_NO_CHECKSUM 0xFFFF + __u16 ipx_pktsize __attribute__ ((packed)); + __u8 ipx_tctrl; + __u8 ipx_type; +#define IPX_TYPE_UNKNOWN 0x00 +#define IPX_TYPE_RIP 0x01 /* may also be 0 */ +#define IPX_TYPE_SAP 0x04 /* may also be 0 */ +#define IPX_TYPE_SPX 0x05 /* SPX protocol */ +#define IPX_TYPE_NCP 0x11 /* $lots for docs on this (SPIT) */ +#define IPX_TYPE_PPROP 0x14 /* complicated flood fill brdcast */ + struct ipx_address ipx_dest __attribute__ ((packed)); + struct ipx_address ipx_source __attribute__ ((packed)); +}; + +static __inline__ struct ipxhdr *ipx_hdr(struct sk_buff *skb) +{ + return (struct ipxhdr *)skb->h.raw; +} + +struct ipx_interface { + /* IPX address */ + __u32 if_netnum; + unsigned char if_node[IPX_NODE_LEN]; + atomic_t refcnt; + + /* physical device info */ + struct net_device *if_dev; + struct datalink_proto *if_dlink; + unsigned short if_dlink_type; + + /* socket support */ + unsigned short if_sknum; + struct hlist_head if_sklist; + spinlock_t if_sklist_lock; + + /* administrative overhead */ + int if_ipx_offset; + unsigned char if_internal; + unsigned char if_primary; + + struct list_head node; /* node in ipx_interfaces list */ +}; + +struct ipx_route { + __u32 ir_net; + struct ipx_interface *ir_intrfc; + unsigned char ir_routed; + unsigned char ir_router_node[IPX_NODE_LEN]; + struct list_head node; /* node in ipx_routes list */ + atomic_t refcnt; +}; + +#ifdef __KERNEL__ +struct ipx_cb { + u8 ipx_tctrl; + u32 ipx_dest_net; + u32 ipx_source_net; + struct { + u32 netnum; + int index; + } last_hop; +}; + +#include <net/sock.h> + +struct ipx_sock { + /* struct sock has to be the first member of ipx_sock */ + struct sock sk; + struct ipx_address dest_addr; + struct ipx_interface *intrfc; + unsigned short port; +#ifdef CONFIG_IPX_INTERN + unsigned char node[IPX_NODE_LEN]; +#endif + unsigned short type; + /* + * To handle special ncp connection-handling sockets for mars_nwe, + * the connection number must be stored in the socket. + */ + unsigned short ipx_ncp_conn; +}; + +static inline struct ipx_sock *ipx_sk(struct sock *sk) +{ + return (struct ipx_sock *)sk; +} + +#define IPX_SKB_CB(__skb) ((struct ipx_cb *)&((__skb)->cb[0])) +#endif + +#define IPX_MIN_EPHEMERAL_SOCKET 0x4000 +#define IPX_MAX_EPHEMERAL_SOCKET 0x7fff + +extern struct list_head ipx_routes; +extern rwlock_t ipx_routes_lock; + +extern struct list_head ipx_interfaces; +extern struct ipx_interface *ipx_interfaces_head(void); +extern spinlock_t ipx_interfaces_lock; + +extern struct ipx_interface *ipx_primary_net; + +extern int ipx_proc_init(void); +extern void ipx_proc_exit(void); + +extern const char *ipx_frame_name(unsigned short); +extern const char *ipx_device_name(struct ipx_interface *intrfc); + +static __inline__ void ipxitf_hold(struct ipx_interface *intrfc) +{ + atomic_inc(&intrfc->refcnt); +} + +extern void ipxitf_down(struct ipx_interface *intrfc); + +static __inline__ void ipxitf_put(struct ipx_interface *intrfc) +{ + if (atomic_dec_and_test(&intrfc->refcnt)) + ipxitf_down(intrfc); +} + +static __inline__ void ipxrtr_hold(struct ipx_route *rt) +{ + atomic_inc(&rt->refcnt); +} + +static __inline__ void ipxrtr_put(struct ipx_route *rt) +{ + if (atomic_dec_and_test(&rt->refcnt)) + kfree(rt); +} +#endif /* _NET_INET_IPX_H_ */ diff --git a/include/net/irda/af_irda.h b/include/net/irda/af_irda.h new file mode 100644 index 000000000000..7a209f61c482 --- /dev/null +++ b/include/net/irda/af_irda.h @@ -0,0 +1,87 @@ +/********************************************************************* + * + * Filename: af_irda.h + * Version: 1.0 + * Description: IrDA sockets declarations + * Status: Stable + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Tue Dec 9 21:13:12 1997 + * Modified at: Fri Jan 28 13:16:32 2000 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1998-2000 Dag Brattli, All Rights Reserved. + * Copyright (c) 2000-2002 Jean Tourrilhes <jt@hpl.hp.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * Neither Dag Brattli nor University of Troms admit liability nor + * provide warranty for any of this software. This material is + * provided "AS-IS" and at no charge. + * + ********************************************************************/ + +#ifndef AF_IRDA_H +#define AF_IRDA_H + +#include <linux/irda.h> +#include <net/irda/irda.h> +#include <net/irda/iriap.h> /* struct iriap_cb */ +#include <net/irda/irias_object.h> /* struct ias_value */ +#include <net/irda/irlmp.h> /* struct lsap_cb */ +#include <net/irda/irttp.h> /* struct tsap_cb */ +#include <net/irda/discovery.h> /* struct discovery_t */ +#include <net/sock.h> + +/* IrDA Socket */ +struct irda_sock { + /* struct sock has to be the first member of irda_sock */ + struct sock sk; + __u32 saddr; /* my local address */ + __u32 daddr; /* peer address */ + + struct lsap_cb *lsap; /* LSAP used by Ultra */ + __u8 pid; /* Protocol IP (PID) used by Ultra */ + + struct tsap_cb *tsap; /* TSAP used by this connection */ + __u8 dtsap_sel; /* remote TSAP address */ + __u8 stsap_sel; /* local TSAP address */ + + __u32 max_sdu_size_rx; + __u32 max_sdu_size_tx; + __u32 max_data_size; + __u8 max_header_size; + struct qos_info qos_tx; + + __u16_host_order mask; /* Hint bits mask */ + __u16_host_order hints; /* Hint bits */ + + void *ckey; /* IrLMP client handle */ + void *skey; /* IrLMP service handle */ + + struct ias_object *ias_obj; /* Our service name + lsap in IAS */ + struct iriap_cb *iriap; /* Used to query remote IAS */ + struct ias_value *ias_result; /* Result of remote IAS query */ + + hashbin_t *cachelog; /* Result of discovery query */ + __u32 cachedaddr; /* Result of selective discovery query */ + + int nslots; /* Number of slots to use for discovery */ + + int errno; /* status of the IAS query */ + + wait_queue_head_t query_wait; /* Wait for the answer to a query */ + struct timer_list watchdog; /* Timeout for discovery */ + + LOCAL_FLOW tx_flow; + LOCAL_FLOW rx_flow; +}; + +static inline struct irda_sock *irda_sk(struct sock *sk) +{ + return (struct irda_sock *)sk; +} + +#endif /* AF_IRDA_H */ diff --git a/include/net/irda/crc.h b/include/net/irda/crc.h new file mode 100644 index 000000000000..f202296df9bb --- /dev/null +++ b/include/net/irda/crc.h @@ -0,0 +1,29 @@ +/********************************************************************* + * + * Filename: crc.h + * Version: + * Description: CRC routines + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Mon Aug 4 20:40:53 1997 + * Modified at: Sun May 2 20:25:23 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + ********************************************************************/ + +#ifndef IRDA_CRC_H +#define IRDA_CRC_H + +#include <linux/types.h> +#include <linux/crc-ccitt.h> + +#define INIT_FCS 0xffff /* Initial FCS value */ +#define GOOD_FCS 0xf0b8 /* Good final FCS value */ + +/* Recompute the FCS with one more character appended. */ +#define irda_fcs(fcs, c) crc_ccitt_byte(fcs, c) + +/* Recompute the FCS with len bytes appended. */ +#define irda_calc_crc16(fcs, buf, len) crc_ccitt(fcs, buf, len) + +#endif diff --git a/include/net/irda/discovery.h b/include/net/irda/discovery.h new file mode 100644 index 000000000000..eb0f9de47294 --- /dev/null +++ b/include/net/irda/discovery.h @@ -0,0 +1,100 @@ +/********************************************************************* + * + * Filename: discovery.h + * Version: + * Description: + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Tue Apr 6 16:53:53 1999 + * Modified at: Tue Oct 5 10:05:10 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1999 Dag Brattli, All Rights Reserved. + * Copyright (c) 2000-2002 Jean Tourrilhes <jt@hpl.hp.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + ********************************************************************/ + +#ifndef DISCOVERY_H +#define DISCOVERY_H + +#include <asm/param.h> + +#include <net/irda/irda.h> +#include <net/irda/irqueue.h> /* irda_queue_t */ +#include <net/irda/irlap_event.h> /* LAP_REASON */ + +#define DISCOVERY_EXPIRE_TIMEOUT (2*sysctl_discovery_timeout*HZ) +#define DISCOVERY_DEFAULT_SLOTS 0 + +/* + * This type is used by the protocols that transmit 16 bits words in + * little endian format. A little endian machine stores MSB of word in + * byte[1] and LSB in byte[0]. A big endian machine stores MSB in byte[0] + * and LSB in byte[1]. + * + * This structure is used in the code for things that are endian neutral + * but that fit in a word so that we can manipulate them efficiently. + * By endian neutral, I mean things that are really an array of bytes, + * and always used as such, for example the hint bits. Jean II + */ +typedef union { + __u16 word; + __u8 byte[2]; +} __u16_host_order; + +/* Same purpose, different application */ +#define u16ho(array) (* ((__u16 *) array)) + +/* Types of discovery */ +typedef enum { + DISCOVERY_LOG, /* What's in our discovery log */ + DISCOVERY_ACTIVE, /* Doing our own discovery on the medium */ + DISCOVERY_PASSIVE, /* Peer doing discovery on the medium */ + EXPIRY_TIMEOUT, /* Entry expired due to timeout */ +} DISCOVERY_MODE; + +#define NICKNAME_MAX_LEN 21 + +/* Basic discovery information about a peer */ +typedef struct irda_device_info discinfo_t; /* linux/irda.h */ + +/* + * The DISCOVERY structure is used for both discovery requests and responses + */ +typedef struct discovery_t { + irda_queue_t q; /* Must be first! */ + + discinfo_t data; /* Basic discovery information */ + int name_len; /* Lenght of nickname */ + + LAP_REASON condition; /* More info about the discovery */ + int gen_addr_bit; /* Need to generate a new device + * address? */ + int nslots; /* Number of slots to use when + * discovering */ + unsigned long timestamp; /* Last time discovered */ + unsigned long firststamp; /* First time discovered */ +} discovery_t; + +void irlmp_add_discovery(hashbin_t *cachelog, discovery_t *discovery); +void irlmp_add_discovery_log(hashbin_t *cachelog, hashbin_t *log); +void irlmp_expire_discoveries(hashbin_t *log, __u32 saddr, int force); +struct irda_device_info *irlmp_copy_discoveries(hashbin_t *log, int *pn, + __u16 mask, int old_entries); + +#endif diff --git a/include/net/irda/ircomm_core.h b/include/net/irda/ircomm_core.h new file mode 100644 index 000000000000..69b610acd2df --- /dev/null +++ b/include/net/irda/ircomm_core.h @@ -0,0 +1,108 @@ +/********************************************************************* + * + * Filename: ircomm_core.h + * Version: + * Description: + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Wed Jun 9 08:58:43 1999 + * Modified at: Mon Dec 13 11:52:29 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1999 Dag Brattli, All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + ********************************************************************/ + +#ifndef IRCOMM_CORE_H +#define IRCOMM_CORE_H + +#include <net/irda/irda.h> +#include <net/irda/irqueue.h> +#include <net/irda/ircomm_event.h> + +#define IRCOMM_MAGIC 0x98347298 +#define IRCOMM_HEADER_SIZE 1 + +struct ircomm_cb; /* Forward decl. */ + +/* + * A small call-table, so we don't have to check the service-type whenever + * we want to do something + */ +typedef struct { + int (*data_request)(struct ircomm_cb *, struct sk_buff *, int clen); + int (*connect_request)(struct ircomm_cb *, struct sk_buff *, + struct ircomm_info *); + int (*connect_response)(struct ircomm_cb *, struct sk_buff *); + int (*disconnect_request)(struct ircomm_cb *, struct sk_buff *, + struct ircomm_info *); +} call_t; + +struct ircomm_cb { + irda_queue_t queue; + magic_t magic; + + notify_t notify; + call_t issue; + + int state; + int line; /* Which TTY line we are using */ + + struct tsap_cb *tsap; + struct lsap_cb *lsap; + + __u8 dlsap_sel; /* Destination LSAP/TSAP selector */ + __u8 slsap_sel; /* Source LSAP/TSAP selector */ + + __u32 saddr; /* Source device address (link we are using) */ + __u32 daddr; /* Destination device address */ + + int max_header_size; /* Header space we must reserve for each frame */ + int max_data_size; /* The amount of data we can fill in each frame */ + + LOCAL_FLOW flow_status; /* Used by ircomm_lmp */ + int pkt_count; /* Number of frames we have sent to IrLAP */ + + __u8 service_type; +}; + +extern hashbin_t *ircomm; + +struct ircomm_cb *ircomm_open(notify_t *notify, __u8 service_type, int line); +int ircomm_close(struct ircomm_cb *self); + +int ircomm_data_request(struct ircomm_cb *self, struct sk_buff *skb); +void ircomm_data_indication(struct ircomm_cb *self, struct sk_buff *skb); +void ircomm_process_data(struct ircomm_cb *self, struct sk_buff *skb); +int ircomm_control_request(struct ircomm_cb *self, struct sk_buff *skb); +int ircomm_connect_request(struct ircomm_cb *self, __u8 dlsap_sel, + __u32 saddr, __u32 daddr, struct sk_buff *skb, + __u8 service_type); +void ircomm_connect_indication(struct ircomm_cb *self, struct sk_buff *skb, + struct ircomm_info *info); +void ircomm_connect_confirm(struct ircomm_cb *self, struct sk_buff *skb, + struct ircomm_info *info); +int ircomm_connect_response(struct ircomm_cb *self, struct sk_buff *userdata); +int ircomm_disconnect_request(struct ircomm_cb *self, struct sk_buff *userdata); +void ircomm_disconnect_indication(struct ircomm_cb *self, struct sk_buff *skb, + struct ircomm_info *info); +void ircomm_flow_request(struct ircomm_cb *self, LOCAL_FLOW flow); + +#define ircomm_is_connected(self) (self->state == IRCOMM_CONN) + +#endif diff --git a/include/net/irda/ircomm_event.h b/include/net/irda/ircomm_event.h new file mode 100644 index 000000000000..c290447872d1 --- /dev/null +++ b/include/net/irda/ircomm_event.h @@ -0,0 +1,85 @@ +/********************************************************************* + * + * Filename: ircomm_event.h + * Version: + * Description: + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Sun Jun 6 23:51:13 1999 + * Modified at: Thu Jun 10 08:36:25 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1999 Dag Brattli, All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + ********************************************************************/ + +#ifndef IRCOMM_EVENT_H +#define IRCOMM_EVENT_H + +#include <net/irda/irmod.h> + +typedef enum { + IRCOMM_IDLE, + IRCOMM_WAITI, + IRCOMM_WAITR, + IRCOMM_CONN, +} IRCOMM_STATE; + +/* IrCOMM Events */ +typedef enum { + IRCOMM_CONNECT_REQUEST, + IRCOMM_CONNECT_RESPONSE, + IRCOMM_TTP_CONNECT_INDICATION, + IRCOMM_LMP_CONNECT_INDICATION, + IRCOMM_TTP_CONNECT_CONFIRM, + IRCOMM_LMP_CONNECT_CONFIRM, + + IRCOMM_LMP_DISCONNECT_INDICATION, + IRCOMM_TTP_DISCONNECT_INDICATION, + IRCOMM_DISCONNECT_REQUEST, + + IRCOMM_TTP_DATA_INDICATION, + IRCOMM_LMP_DATA_INDICATION, + IRCOMM_DATA_REQUEST, + IRCOMM_CONTROL_REQUEST, + IRCOMM_CONTROL_INDICATION, +} IRCOMM_EVENT; + +/* + * Used for passing information through the state-machine + */ +struct ircomm_info { + __u32 saddr; /* Source device address */ + __u32 daddr; /* Destination device address */ + __u8 dlsap_sel; + LM_REASON reason; /* Reason for disconnect */ + __u32 max_data_size; + __u32 max_header_size; + + struct qos_info *qos; +}; + +extern char *ircomm_state[]; + +struct ircomm_cb; /* Forward decl. */ + +int ircomm_do_event(struct ircomm_cb *self, IRCOMM_EVENT event, + struct sk_buff *skb, struct ircomm_info *info); +void ircomm_next_state(struct ircomm_cb *self, IRCOMM_STATE state); + +#endif diff --git a/include/net/irda/ircomm_lmp.h b/include/net/irda/ircomm_lmp.h new file mode 100644 index 000000000000..ae02106be590 --- /dev/null +++ b/include/net/irda/ircomm_lmp.h @@ -0,0 +1,38 @@ +/********************************************************************* + * + * Filename: ircomm_lmp.h + * Version: + * Description: + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Wed Jun 9 10:06:07 1999 + * Modified at: Fri Aug 13 07:32:32 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1999 Dag Brattli, All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + ********************************************************************/ + +#ifndef IRCOMM_LMP_H +#define IRCOMM_LMP_H + +#include <net/irda/ircomm_core.h> + +int ircomm_open_lsap(struct ircomm_cb *self); + +#endif diff --git a/include/net/irda/ircomm_param.h b/include/net/irda/ircomm_param.h new file mode 100644 index 000000000000..e6678800c41f --- /dev/null +++ b/include/net/irda/ircomm_param.h @@ -0,0 +1,149 @@ +/********************************************************************* + * + * Filename: ircomm_param.h + * Version: 1.0 + * Description: Parameter handling for the IrCOMM protocol + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Mon Jun 7 08:47:28 1999 + * Modified at: Wed Aug 25 13:46:33 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1999 Dag Brattli, All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + ********************************************************************/ + +#ifndef IRCOMM_PARAMS_H +#define IRCOMM_PARAMS_H + +#include <net/irda/parameters.h> + +/* Parameters common to all service types */ +#define IRCOMM_SERVICE_TYPE 0x00 +#define IRCOMM_PORT_TYPE 0x01 /* Only used in LM-IAS */ +#define IRCOMM_PORT_NAME 0x02 /* Only used in LM-IAS */ + +/* Parameters for both 3 wire and 9 wire */ +#define IRCOMM_DATA_RATE 0x10 +#define IRCOMM_DATA_FORMAT 0x11 +#define IRCOMM_FLOW_CONTROL 0x12 +#define IRCOMM_XON_XOFF 0x13 +#define IRCOMM_ENQ_ACK 0x14 +#define IRCOMM_LINE_STATUS 0x15 +#define IRCOMM_BREAK 0x16 + +/* Parameters for 9 wire */ +#define IRCOMM_DTE 0x20 +#define IRCOMM_DCE 0x21 +#define IRCOMM_POLL 0x22 + +/* Service type (details) */ +#define IRCOMM_3_WIRE_RAW 0x01 +#define IRCOMM_3_WIRE 0x02 +#define IRCOMM_9_WIRE 0x04 +#define IRCOMM_CENTRONICS 0x08 + +/* Port type (details) */ +#define IRCOMM_SERIAL 0x00 +#define IRCOMM_PARALLEL 0x01 + +/* Data format (details) */ +#define IRCOMM_WSIZE_5 0x00 +#define IRCOMM_WSIZE_6 0x01 +#define IRCOMM_WSIZE_7 0x02 +#define IRCOMM_WSIZE_8 0x03 + +#define IRCOMM_1_STOP_BIT 0x00 +#define IRCOMM_2_STOP_BIT 0x04 /* 1.5 if char len 5 */ + +#define IRCOMM_PARITY_DISABLE 0x00 +#define IRCOMM_PARITY_ENABLE 0x08 + +#define IRCOMM_PARITY_ODD 0x00 +#define IRCOMM_PARITY_EVEN 0x10 +#define IRCOMM_PARITY_MARK 0x20 +#define IRCOMM_PARITY_SPACE 0x30 + +/* Flow control */ +#define IRCOMM_XON_XOFF_IN 0x01 +#define IRCOMM_XON_XOFF_OUT 0x02 +#define IRCOMM_RTS_CTS_IN 0x04 +#define IRCOMM_RTS_CTS_OUT 0x08 +#define IRCOMM_DSR_DTR_IN 0x10 +#define IRCOMM_DSR_DTR_OUT 0x20 +#define IRCOMM_ENQ_ACK_IN 0x40 +#define IRCOMM_ENQ_ACK_OUT 0x80 + +/* Line status */ +#define IRCOMM_OVERRUN_ERROR 0x02 +#define IRCOMM_PARITY_ERROR 0x04 +#define IRCOMM_FRAMING_ERROR 0x08 + +/* DTE (Data terminal equipment) line settings */ +#define IRCOMM_DELTA_DTR 0x01 +#define IRCOMM_DELTA_RTS 0x02 +#define IRCOMM_DTR 0x04 +#define IRCOMM_RTS 0x08 + +/* DCE (Data communications equipment) line settings */ +#define IRCOMM_DELTA_CTS 0x01 /* Clear to send has changed */ +#define IRCOMM_DELTA_DSR 0x02 /* Data set ready has changed */ +#define IRCOMM_DELTA_RI 0x04 /* Ring indicator has changed */ +#define IRCOMM_DELTA_CD 0x08 /* Carrier detect has changed */ +#define IRCOMM_CTS 0x10 /* Clear to send is high */ +#define IRCOMM_DSR 0x20 /* Data set ready is high */ +#define IRCOMM_RI 0x40 /* Ring indicator is high */ +#define IRCOMM_CD 0x80 /* Carrier detect is high */ +#define IRCOMM_DCE_DELTA_ANY 0x0f + +/* + * Parameter state + */ +struct ircomm_params { + /* General control params */ + __u8 service_type; + __u8 port_type; + char port_name[32]; + + /* Control params for 3- and 9-wire service type */ + __u32 data_rate; /* Data rate in bps */ + __u8 data_format; + __u8 flow_control; + char xonxoff[2]; + char enqack[2]; + __u8 line_status; + __u8 _break; + + __u8 null_modem; + + /* Control params for 9-wire service type */ + __u8 dte; + __u8 dce; + __u8 poll; + + /* Control params for Centronics service type */ +}; + +struct ircomm_tty_cb; /* Forward decl. */ + +int ircomm_param_request(struct ircomm_tty_cb *self, __u8 pi, int flush); + +extern pi_param_info_t ircomm_param_info; + +#endif /* IRCOMM_PARAMS_H */ + diff --git a/include/net/irda/ircomm_ttp.h b/include/net/irda/ircomm_ttp.h new file mode 100644 index 000000000000..403081ed725c --- /dev/null +++ b/include/net/irda/ircomm_ttp.h @@ -0,0 +1,39 @@ +/********************************************************************* + * + * Filename: ircomm_ttp.h + * Version: + * Description: + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Wed Jun 9 10:06:07 1999 + * Modified at: Fri Aug 13 07:32:22 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1999 Dag Brattli, All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + ********************************************************************/ + +#ifndef IRCOMM_TTP_H +#define IRCOMM_TTP_H + +#include <net/irda/ircomm_core.h> + +int ircomm_open_tsap(struct ircomm_cb *self); + +#endif + diff --git a/include/net/irda/ircomm_tty.h b/include/net/irda/ircomm_tty.h new file mode 100644 index 000000000000..87699cb4ef8c --- /dev/null +++ b/include/net/irda/ircomm_tty.h @@ -0,0 +1,139 @@ +/********************************************************************* + * + * Filename: ircomm_tty.h + * Version: + * Description: + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Sun Jun 6 23:24:22 1999 + * Modified at: Fri Jan 28 13:16:57 2000 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1999-2000 Dag Brattli, All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + ********************************************************************/ + +#ifndef IRCOMM_TTY_H +#define IRCOMM_TTY_H + +#include <linux/serial.h> +#include <linux/termios.h> +#include <linux/timer.h> +#include <linux/tty.h> /* struct tty_struct */ + +#include <net/irda/irias_object.h> +#include <net/irda/ircomm_core.h> +#include <net/irda/ircomm_param.h> + +#define IRCOMM_TTY_PORTS 32 +#define IRCOMM_TTY_MAGIC 0x3432 +#define IRCOMM_TTY_MAJOR 161 +#define IRCOMM_TTY_MINOR 0 + +/* This is used as an initial value to max_header_size before the proper + * value is filled in (5 for ttp, 4 for lmp). This allow us to detect + * the state of the underlying connection. - Jean II */ +#define IRCOMM_TTY_HDR_UNINITIALISED 16 +/* Same for payload size. See qos.c for the smallest max data size */ +#define IRCOMM_TTY_DATA_UNINITIALISED (64 - IRCOMM_TTY_HDR_UNINITIALISED) + +/* Those are really defined in include/linux/serial.h - Jean II */ +#define ASYNC_B_INITIALIZED 31 /* Serial port was initialized */ +#define ASYNC_B_NORMAL_ACTIVE 29 /* Normal device is active */ +#define ASYNC_B_CLOSING 27 /* Serial port is closing */ + +/* + * IrCOMM TTY driver state + */ +struct ircomm_tty_cb { + irda_queue_t queue; /* Must be first */ + magic_t magic; + + int state; /* Connect state */ + + struct tty_struct *tty; + struct ircomm_cb *ircomm; /* IrCOMM layer instance */ + + struct sk_buff *tx_skb; /* Transmit buffer */ + struct sk_buff *ctrl_skb; /* Control data buffer */ + + /* Parameters */ + struct ircomm_params settings; + + __u8 service_type; /* The service that we support */ + int client; /* True if we are a client */ + LOCAL_FLOW flow; /* IrTTP flow status */ + + int line; + unsigned long flags; + + __u8 dlsap_sel; + __u8 slsap_sel; + + __u32 saddr; + __u32 daddr; + + __u32 max_data_size; /* Max data we can transmit in one packet */ + __u32 max_header_size; /* The amount of header space we must reserve */ + __u32 tx_data_size; /* Max data size of current tx_skb */ + + struct iriap_cb *iriap; /* Instance used for querying remote IAS */ + struct ias_object* obj; + void *skey; + void *ckey; + + wait_queue_head_t open_wait; + wait_queue_head_t close_wait; + struct timer_list watchdog_timer; + struct work_struct tqueue; + + unsigned short close_delay; + unsigned short closing_wait; /* time to wait before closing */ + + int open_count; + int blocked_open; /* # of blocked opens */ + + /* Protect concurent access to : + * o self->open_count + * o self->ctrl_skb + * o self->tx_skb + * Maybe other things may gain to be protected as well... + * Jean II */ + spinlock_t spinlock; +}; + +void ircomm_tty_start(struct tty_struct *tty); +void ircomm_tty_check_modem_status(struct ircomm_tty_cb *self); + +extern int ircomm_tty_tiocmget(struct tty_struct *tty, struct file *file); +extern int ircomm_tty_tiocmset(struct tty_struct *tty, struct file *file, + unsigned int set, unsigned int clear); +extern int ircomm_tty_ioctl(struct tty_struct *tty, struct file *file, + unsigned int cmd, unsigned long arg); +extern void ircomm_tty_set_termios(struct tty_struct *tty, + struct termios *old_termios); +extern hashbin_t *ircomm_tty; + +#endif + + + + + + + diff --git a/include/net/irda/ircomm_tty_attach.h b/include/net/irda/ircomm_tty_attach.h new file mode 100644 index 000000000000..f91a5695aa44 --- /dev/null +++ b/include/net/irda/ircomm_tty_attach.h @@ -0,0 +1,94 @@ +/********************************************************************* + * + * Filename: ircomm_tty_attach.h + * Version: + * Description: + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Wed Jun 9 15:55:18 1999 + * Modified at: Fri Dec 10 21:04:55 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1999 Dag Brattli, All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + ********************************************************************/ + +#ifndef IRCOMM_TTY_ATTACH_H +#define IRCOMM_TTY_ATTACH_H + +#include <net/irda/ircomm_tty.h> + +typedef enum { + IRCOMM_TTY_IDLE, + IRCOMM_TTY_SEARCH, + IRCOMM_TTY_QUERY_PARAMETERS, + IRCOMM_TTY_QUERY_LSAP_SEL, + IRCOMM_TTY_SETUP, + IRCOMM_TTY_READY, +} IRCOMM_TTY_STATE; + +/* IrCOMM TTY Events */ +typedef enum { + IRCOMM_TTY_ATTACH_CABLE, + IRCOMM_TTY_DETACH_CABLE, + IRCOMM_TTY_DATA_REQUEST, + IRCOMM_TTY_DATA_INDICATION, + IRCOMM_TTY_DISCOVERY_REQUEST, + IRCOMM_TTY_DISCOVERY_INDICATION, + IRCOMM_TTY_CONNECT_CONFIRM, + IRCOMM_TTY_CONNECT_INDICATION, + IRCOMM_TTY_DISCONNECT_REQUEST, + IRCOMM_TTY_DISCONNECT_INDICATION, + IRCOMM_TTY_WD_TIMER_EXPIRED, + IRCOMM_TTY_GOT_PARAMETERS, + IRCOMM_TTY_GOT_LSAPSEL, +} IRCOMM_TTY_EVENT; + +/* Used for passing information through the state-machine */ +struct ircomm_tty_info { + __u32 saddr; /* Source device address */ + __u32 daddr; /* Destination device address */ + __u8 dlsap_sel; +}; + +extern char *ircomm_state[]; +extern char *ircomm_tty_state[]; + +int ircomm_tty_do_event(struct ircomm_tty_cb *self, IRCOMM_TTY_EVENT event, + struct sk_buff *skb, struct ircomm_tty_info *info); + + +int ircomm_tty_attach_cable(struct ircomm_tty_cb *self); +void ircomm_tty_detach_cable(struct ircomm_tty_cb *self); +void ircomm_tty_connect_confirm(void *instance, void *sap, + struct qos_info *qos, + __u32 max_sdu_size, + __u8 max_header_size, + struct sk_buff *skb); +void ircomm_tty_disconnect_indication(void *instance, void *sap, + LM_REASON reason, + struct sk_buff *skb); +void ircomm_tty_connect_indication(void *instance, void *sap, + struct qos_info *qos, + __u32 max_sdu_size, + __u8 max_header_size, + struct sk_buff *skb); +int ircomm_tty_send_initial_parameters(struct ircomm_tty_cb *self); +void ircomm_tty_link_established(struct ircomm_tty_cb *self); + +#endif /* IRCOMM_TTY_ATTACH_H */ diff --git a/include/net/irda/irda.h b/include/net/irda/irda.h new file mode 100644 index 000000000000..05a840837fe7 --- /dev/null +++ b/include/net/irda/irda.h @@ -0,0 +1,117 @@ +/********************************************************************* + * + * Filename: irda.h + * Version: 1.0 + * Description: IrDA common include file for kernel internal use + * Status: Stable + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Tue Dec 9 21:13:12 1997 + * Modified at: Fri Jan 28 13:16:32 2000 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1998-2000 Dag Brattli, All Rights Reserved. + * Copyright (c) 2000-2002 Jean Tourrilhes <jt@hpl.hp.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * Neither Dag Brattli nor University of Troms admit liability nor + * provide warranty for any of this software. This material is + * provided "AS-IS" and at no charge. + * + ********************************************************************/ + +#ifndef NET_IRDA_H +#define NET_IRDA_H + +#include <linux/config.h> +#include <linux/skbuff.h> /* struct sk_buff */ +#include <linux/kernel.h> +#include <linux/if.h> /* sa_family_t in <linux/irda.h> */ +#include <linux/irda.h> + +typedef __u32 magic_t; + +#ifndef TRUE +#define TRUE 1 +#endif + +#ifndef FALSE +#define FALSE 0 +#endif + +/* Hack to do small backoff when setting media busy in IrLAP */ +#ifndef SMALL +#define SMALL 5 +#endif + +#ifndef IRDA_MIN /* Lets not mix this MIN with other header files */ +#define IRDA_MIN(a, b) (((a) < (b)) ? (a) : (b)) +#endif + +#ifndef IRDA_ALIGN +# define IRDA_ALIGN __attribute__((aligned)) +#endif +#ifndef IRDA_PACK +# define IRDA_PACK __attribute__((packed)) +#endif + + +#ifdef CONFIG_IRDA_DEBUG + +extern unsigned int irda_debug; + +/* use 0 for production, 1 for verification, >2 for debug */ +#define IRDA_DEBUG_LEVEL 0 + +#define IRDA_DEBUG(n, args...) \ +do { if (irda_debug >= (n)) \ + printk(KERN_DEBUG args); \ +} while (0) +#define IRDA_ASSERT(expr, func) \ +do { if(!(expr)) { \ + printk( "Assertion failed! %s:%s:%d %s\n", \ + __FILE__,__FUNCTION__,__LINE__,(#expr) ); \ + func } } while (0) +#define IRDA_ASSERT_LABEL(label) label +#else +#define IRDA_DEBUG(n, args...) do { } while (0) +#define IRDA_ASSERT(expr, func) do { (void)(expr); } while (0) +#define IRDA_ASSERT_LABEL(label) +#endif /* CONFIG_IRDA_DEBUG */ + +#define IRDA_WARNING(args...) printk(KERN_WARNING args) +#define IRDA_MESSAGE(args...) printk(KERN_INFO args) +#define IRDA_ERROR(args...) printk(KERN_ERR args) + +/* + * Magic numbers used by Linux-IrDA. Random numbers which must be unique to + * give the best protection + */ + +#define IRTTY_MAGIC 0x2357 +#define LAP_MAGIC 0x1357 +#define LMP_MAGIC 0x4321 +#define LMP_LSAP_MAGIC 0x69333 +#define LMP_LAP_MAGIC 0x3432 +#define IRDA_DEVICE_MAGIC 0x63454 +#define IAS_MAGIC 0x007 +#define TTP_MAGIC 0x241169 +#define TTP_TSAP_MAGIC 0x4345 +#define IROBEX_MAGIC 0x341324 +#define HB_MAGIC 0x64534 +#define IRLAN_MAGIC 0x754 +#define IAS_OBJECT_MAGIC 0x34234 +#define IAS_ATTRIB_MAGIC 0x45232 +#define IRDA_TASK_MAGIC 0x38423 + +#define IAS_DEVICE_ID 0x0000 /* Defined by IrDA, IrLMP section 4.1 (page 68) */ +#define IAS_PNP_ID 0xd342 +#define IAS_OBEX_ID 0x34323 +#define IAS_IRLAN_ID 0x34234 +#define IAS_IRCOMM_ID 0x2343 +#define IAS_IRLPT_ID 0x9876 + +#endif /* NET_IRDA_H */ diff --git a/include/net/irda/irda_device.h b/include/net/irda/irda_device.h new file mode 100644 index 000000000000..3b216f186f18 --- /dev/null +++ b/include/net/irda/irda_device.h @@ -0,0 +1,301 @@ +/********************************************************************* + * + * Filename: irda_device.h + * Version: 0.9 + * Description: Contains various declarations used by the drivers + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Tue Apr 14 12:41:42 1998 + * Modified at: Mon Mar 20 09:08:57 2000 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1999-2000 Dag Brattli, All Rights Reserved. + * Copyright (c) 1998 Thomas Davis, <ratbert@radiks.net>, + * Copyright (c) 2000-2002 Jean Tourrilhes <jt@hpl.hp.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + ********************************************************************/ + +/* + * This header contains all the IrDA definitions a driver really + * needs, and therefore the driver should not need to include + * any other IrDA headers - Jean II + */ + +#ifndef IRDA_DEVICE_H +#define IRDA_DEVICE_H + +#include <linux/config.h> +#include <linux/tty.h> +#include <linux/netdevice.h> +#include <linux/spinlock.h> +#include <linux/skbuff.h> /* struct sk_buff */ +#include <linux/irda.h> +#include <linux/types.h> + +#include <net/pkt_sched.h> +#include <net/irda/irda.h> +#include <net/irda/qos.h> /* struct qos_info */ +#include <net/irda/irqueue.h> /* irda_queue_t */ + +/* A few forward declarations (to make compiler happy) */ +struct irlap_cb; + +/* Some non-standard interface flags (should not conflict with any in if.h) */ +#define IFF_SIR 0x0001 /* Supports SIR speeds */ +#define IFF_MIR 0x0002 /* Supports MIR speeds */ +#define IFF_FIR 0x0004 /* Supports FIR speeds */ +#define IFF_VFIR 0x0008 /* Supports VFIR speeds */ +#define IFF_PIO 0x0010 /* Supports PIO transfer of data */ +#define IFF_DMA 0x0020 /* Supports DMA transfer of data */ +#define IFF_SHM 0x0040 /* Supports shared memory data transfers */ +#define IFF_DONGLE 0x0080 /* Interface has a dongle attached */ +#define IFF_AIR 0x0100 /* Supports Advanced IR (AIR) standards */ + +#define IO_XMIT 0x01 +#define IO_RECV 0x02 + +typedef enum { + IRDA_IRLAP, /* IrDA mode, and deliver to IrLAP */ + IRDA_RAW, /* IrDA mode */ + SHARP_ASK, + TV_REMOTE, /* Also known as Consumer Electronics IR */ +} INFRARED_MODE; + +typedef enum { + IRDA_TASK_INIT, /* All tasks are initialized with this state */ + IRDA_TASK_DONE, /* Signals that the task is finished */ + IRDA_TASK_WAIT, + IRDA_TASK_WAIT1, + IRDA_TASK_WAIT2, + IRDA_TASK_WAIT3, + IRDA_TASK_CHILD_INIT, /* Initializing child task */ + IRDA_TASK_CHILD_WAIT, /* Waiting for child task to finish */ + IRDA_TASK_CHILD_DONE /* Child task is finished */ +} IRDA_TASK_STATE; + +struct irda_task; +typedef int (*IRDA_TASK_CALLBACK) (struct irda_task *task); + +struct irda_task { + irda_queue_t q; + magic_t magic; + + IRDA_TASK_STATE state; + IRDA_TASK_CALLBACK function; + IRDA_TASK_CALLBACK finished; + + struct irda_task *parent; + struct timer_list timer; + + void *instance; /* Instance being called */ + void *param; /* Parameter to be used by instance */ +}; + +/* Dongle info */ +struct dongle_reg; +typedef struct { + struct dongle_reg *issue; /* Registration info */ + struct net_device *dev; /* Device we are attached to */ + struct irda_task *speed_task; /* Task handling speed change */ + struct irda_task *reset_task; /* Task handling reset */ + __u32 speed; /* Current speed */ + + /* Callbacks to the IrDA device driver */ + int (*set_mode)(struct net_device *, int mode); + int (*read)(struct net_device *dev, __u8 *buf, int len); + int (*write)(struct net_device *dev, __u8 *buf, int len); + int (*set_dtr_rts)(struct net_device *dev, int dtr, int rts); +} dongle_t; + +/* Dongle registration info */ +struct dongle_reg { + irda_queue_t q; /* Must be first */ + IRDA_DONGLE type; + + void (*open)(dongle_t *dongle, struct qos_info *qos); + void (*close)(dongle_t *dongle); + int (*reset)(struct irda_task *task); + int (*change_speed)(struct irda_task *task); + struct module *owner; +}; + +/* + * Per-packet information we need to hide inside sk_buff + * (must not exceed 48 bytes, check with struct sk_buff) + */ +struct irda_skb_cb { + magic_t magic; /* Be sure that we can trust the information */ + __u32 next_speed; /* The Speed to be set *after* this frame */ + __u16 mtt; /* Minimum turn around time */ + __u16 xbofs; /* Number of xbofs required, used by SIR mode */ + __u16 next_xbofs; /* Number of xbofs required *after* this frame */ + void *context; /* May be used by drivers */ + void (*destructor)(struct sk_buff *skb); /* Used for flow control */ + __u16 xbofs_delay; /* Number of xbofs used for generating the mtt */ + __u8 line; /* Used by IrCOMM in IrLPT mode */ +}; + +/* Chip specific info */ +typedef struct { + int cfg_base; /* Config register IO base */ + int sir_base; /* SIR IO base */ + int fir_base; /* FIR IO base */ + int mem_base; /* Shared memory base */ + int sir_ext; /* Length of SIR iobase */ + int fir_ext; /* Length of FIR iobase */ + int irq, irq2; /* Interrupts used */ + int dma, dma2; /* DMA channel(s) used */ + int fifo_size; /* FIFO size */ + int irqflags; /* interrupt flags (ie, SA_SHIRQ|SA_INTERRUPT) */ + int direction; /* Link direction, used by some FIR drivers */ + int enabled; /* Powered on? */ + int suspended; /* Suspended by APM */ + __u32 speed; /* Currently used speed */ + __u32 new_speed; /* Speed we must change to when Tx is finished */ + int dongle_id; /* Dongle or transceiver currently used */ +} chipio_t; + +/* IO buffer specific info (inspired by struct sk_buff) */ +typedef struct { + int state; /* Receiving state (transmit state not used) */ + int in_frame; /* True if receiving frame */ + + __u8 *head; /* start of buffer */ + __u8 *data; /* start of data in buffer */ + + int len; /* current length of data */ + int truesize; /* total allocated size of buffer */ + __u16 fcs; + + struct sk_buff *skb; /* ZeroCopy Rx in async_unwrap_char() */ +} iobuff_t; + +/* Maximum SIR frame (skb) that we expect to receive *unwrapped*. + * Max LAP MTU (I field) is 2048 bytes max (IrLAP 1.1, chapt 6.6.5, p40). + * Max LAP header is 2 bytes (for now). + * Max CRC is 2 bytes at SIR, 4 bytes at FIR. + * Need 1 byte for skb_reserve() to align IP header for IrLAN. + * Add a few extra bytes just to be safe (buffer is power of two anyway) + * Jean II */ +#define IRDA_SKB_MAX_MTU 2064 +/* Maximum SIR frame that we expect to send, wrapped (i.e. with XBOFS + * and escaped characters on top of above). */ +#define IRDA_SIR_MAX_FRAME 4269 + +/* The SIR unwrapper async_unwrap_char() will use a Rx-copy-break mechanism + * when using the optional ZeroCopy Rx, where only small frames are memcpy + * to a smaller skb to save memory. This is the threshold under which copy + * will happen (and over which it won't happen). + * Some FIR drivers may use this #define as well... + * This is the same value as various Ethernet drivers. - Jean II */ +#define IRDA_RX_COPY_THRESHOLD 256 + +/* Function prototypes */ +int irda_device_init(void); +void irda_device_cleanup(void); + +/* IrLAP entry points used by the drivers. + * We declare them here to avoid the driver pulling a whole bunch stack + * headers they don't really need - Jean II */ +struct irlap_cb *irlap_open(struct net_device *dev, struct qos_info *qos, + const char *hw_name); +void irlap_close(struct irlap_cb *self); + +/* Interface to be uses by IrLAP */ +void irda_device_set_media_busy(struct net_device *dev, int status); +int irda_device_is_media_busy(struct net_device *dev); +int irda_device_is_receiving(struct net_device *dev); + +/* Interface for internal use */ +static inline int irda_device_txqueue_empty(const struct net_device *dev) +{ + return (skb_queue_len(&dev->qdisc->q) == 0); +} +int irda_device_set_raw_mode(struct net_device* self, int status); +struct net_device *alloc_irdadev(int sizeof_priv); + +/* Dongle interface */ +void irda_device_unregister_dongle(struct dongle_reg *dongle); +int irda_device_register_dongle(struct dongle_reg *dongle); +dongle_t *irda_device_dongle_init(struct net_device *dev, int type); +int irda_device_dongle_cleanup(dongle_t *dongle); + +#ifdef CONFIG_ISA +void irda_setup_dma(int channel, dma_addr_t buffer, int count, int mode); +#endif + +void irda_task_delete(struct irda_task *task); +struct irda_task *irda_task_execute(void *instance, + IRDA_TASK_CALLBACK function, + IRDA_TASK_CALLBACK finished, + struct irda_task *parent, void *param); +void irda_task_next_state(struct irda_task *task, IRDA_TASK_STATE state); + +/* + * Function irda_get_mtt (skb) + * + * Utility function for getting the minimum turnaround time out of + * the skb, where it has been hidden in the cb field. + */ +static inline __u16 irda_get_mtt(const struct sk_buff *skb) +{ + const struct irda_skb_cb *cb = (const struct irda_skb_cb *) skb->cb; + return (cb->magic == LAP_MAGIC) ? cb->mtt : 10000; +} + +/* + * Function irda_get_next_speed (skb) + * + * Extract the speed that should be set *after* this frame from the skb + * + * Note : return -1 for user space frames + */ +static inline __u32 irda_get_next_speed(const struct sk_buff *skb) +{ + const struct irda_skb_cb *cb = (const struct irda_skb_cb *) skb->cb; + return (cb->magic == LAP_MAGIC) ? cb->next_speed : -1; +} + +/* + * Function irda_get_next_xbofs (skb) + * + * Extract the xbofs that should be set for this frame from the skb + * + * Note : default to 10 for user space frames + */ +static inline __u16 irda_get_xbofs(const struct sk_buff *skb) +{ + const struct irda_skb_cb *cb = (const struct irda_skb_cb *) skb->cb; + return (cb->magic == LAP_MAGIC) ? cb->xbofs : 10; +} + +/* + * Function irda_get_next_xbofs (skb) + * + * Extract the xbofs that should be set *after* this frame from the skb + * + * Note : return -1 for user space frames + */ +static inline __u16 irda_get_next_xbofs(const struct sk_buff *skb) +{ + const struct irda_skb_cb *cb = (const struct irda_skb_cb *) skb->cb; + return (cb->magic == LAP_MAGIC) ? cb->next_xbofs : -1; +} +#endif /* IRDA_DEVICE_H */ + + diff --git a/include/net/irda/iriap.h b/include/net/irda/iriap.h new file mode 100644 index 000000000000..2007c5a0a43f --- /dev/null +++ b/include/net/irda/iriap.h @@ -0,0 +1,108 @@ +/********************************************************************* + * + * Filename: iriap.h + * Version: 0.5 + * Description: Information Access Protocol (IAP) + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Thu Aug 21 00:02:07 1997 + * Modified at: Sat Dec 25 16:42:09 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1997-1999 Dag Brattli <dagb@cs.uit.no>, + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * Neither Dag Brattli nor University of Troms admit liability nor + * provide warranty for any of this software. This material is + * provided "AS-IS" and at no charge. + * + ********************************************************************/ + +#ifndef IRIAP_H +#define IRIAP_H + +#include <linux/types.h> +#include <linux/skbuff.h> + +#include <net/irda/iriap_event.h> +#include <net/irda/irias_object.h> +#include <net/irda/irqueue.h> /* irda_queue_t */ +#include <net/irda/timer.h> /* struct timer_list */ + +#define IAP_LST 0x80 +#define IAP_ACK 0x40 + +#define IAS_SERVER 0 +#define IAS_CLIENT 1 + +/* IrIAP Op-codes */ +#define GET_INFO_BASE 0x01 +#define GET_OBJECTS 0x02 +#define GET_VALUE 0x03 +#define GET_VALUE_BY_CLASS 0x04 +#define GET_OBJECT_INFO 0x05 +#define GET_ATTRIB_NAMES 0x06 + +#define IAS_SUCCESS 0 +#define IAS_CLASS_UNKNOWN 1 +#define IAS_ATTRIB_UNKNOWN 2 +#define IAS_DISCONNECT 10 + +typedef void (*CONFIRM_CALLBACK)(int result, __u16 obj_id, + struct ias_value *value, void *priv); + +struct iriap_cb { + irda_queue_t q; /* Must be first */ + magic_t magic; /* Magic cookie */ + + int mode; /* Client or server */ + + __u32 saddr; + __u32 daddr; + __u8 operation; + + struct sk_buff *request_skb; + struct lsap_cb *lsap; + __u8 slsap_sel; + + /* Client states */ + IRIAP_STATE client_state; + IRIAP_STATE call_state; + + /* Server states */ + IRIAP_STATE server_state; + IRIAP_STATE r_connect_state; + + CONFIRM_CALLBACK confirm; + void *priv; /* Used to identify client */ + + __u8 max_header_size; + __u32 max_data_size; + + struct timer_list watchdog_timer; +}; + +int iriap_init(void); +void iriap_cleanup(void); + +struct iriap_cb *iriap_open(__u8 slsap_sel, int mode, void *priv, + CONFIRM_CALLBACK callback); +void iriap_close(struct iriap_cb *self); + +int iriap_getvaluebyclass_request(struct iriap_cb *self, + __u32 saddr, __u32 daddr, + char *name, char *attr); +void iriap_connect_request(struct iriap_cb *self); +void iriap_send_ack( struct iriap_cb *self); +void iriap_call_indication(struct iriap_cb *self, struct sk_buff *skb); + +void iriap_register_server(void); + +#endif + + diff --git a/include/net/irda/iriap_event.h b/include/net/irda/iriap_event.h new file mode 100644 index 000000000000..4ca3d2071b03 --- /dev/null +++ b/include/net/irda/iriap_event.h @@ -0,0 +1,85 @@ +/********************************************************************* + * + * Filename: iriap_event.h + * Version: + * Description: + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Mon Aug 4 20:40:53 1997 + * Modified at: Sun Oct 31 22:02:54 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1998-1999 Dag Brattli <dagb@cs.uit.no>, All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * Neither Dag Brattli nor University of Troms admit liability nor + * provide warranty for any of this software. This material is + * provided "AS-IS" and at no charge. + * + ********************************************************************/ + +#ifndef IRIAP_FSM_H +#define IRIAP_FSM_H + +/* Forward because of circular include dependecies */ +struct iriap_cb; + +/* IrIAP states */ +typedef enum { + /* Client */ + S_DISCONNECT, + S_CONNECTING, + S_CALL, + + /* S-Call */ + S_MAKE_CALL, + S_CALLING, + S_OUTSTANDING, + S_REPLYING, + S_WAIT_FOR_CALL, + S_WAIT_ACTIVE, + + /* Server */ + R_DISCONNECT, + R_CALL, + + /* R-Connect */ + R_WAITING, + R_WAIT_ACTIVE, + R_RECEIVING, + R_EXECUTE, + R_RETURNING, +} IRIAP_STATE; + +typedef enum { + IAP_CALL_REQUEST, + IAP_CALL_REQUEST_GVBC, + IAP_CALL_RESPONSE, + IAP_RECV_F_LST, + IAP_LM_DISCONNECT_INDICATION, + IAP_LM_CONNECT_INDICATION, + IAP_LM_CONNECT_CONFIRM, +} IRIAP_EVENT; + +void iriap_next_client_state (struct iriap_cb *self, IRIAP_STATE state); +void iriap_next_call_state (struct iriap_cb *self, IRIAP_STATE state); +void iriap_next_server_state (struct iriap_cb *self, IRIAP_STATE state); +void iriap_next_r_connect_state(struct iriap_cb *self, IRIAP_STATE state); + + +void iriap_do_client_event(struct iriap_cb *self, IRIAP_EVENT event, + struct sk_buff *skb); +void iriap_do_call_event (struct iriap_cb *self, IRIAP_EVENT event, + struct sk_buff *skb); + +void iriap_do_server_event (struct iriap_cb *self, IRIAP_EVENT event, + struct sk_buff *skb); +void iriap_do_r_connect_event(struct iriap_cb *self, IRIAP_EVENT event, + struct sk_buff *skb); + +#endif /* IRIAP_FSM_H */ + diff --git a/include/net/irda/irias_object.h b/include/net/irda/irias_object.h new file mode 100644 index 000000000000..c41196b87955 --- /dev/null +++ b/include/net/irda/irias_object.h @@ -0,0 +1,108 @@ +/********************************************************************* + * + * Filename: irias_object.h + * Version: + * Description: + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Thu Oct 1 22:49:50 1998 + * Modified at: Wed Dec 15 11:20:57 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1998-1999 Dag Brattli, All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * Neither Dag Brattli nor University of Troms admit liability nor + * provide warranty for any of this software. This material is + * provided "AS-IS" and at no charge. + * + ********************************************************************/ + +#ifndef LM_IAS_OBJECT_H +#define LM_IAS_OBJECT_H + +#include <net/irda/irda.h> +#include <net/irda/irqueue.h> + +/* LM-IAS Attribute types */ +#define IAS_MISSING 0 +#define IAS_INTEGER 1 +#define IAS_OCT_SEQ 2 +#define IAS_STRING 3 + +/* Object ownership of attributes (user or kernel) */ +#define IAS_KERNEL_ATTR 0 +#define IAS_USER_ATTR 1 + +/* + * LM-IAS Object + */ +struct ias_object { + irda_queue_t q; /* Must be first! */ + magic_t magic; + + char *name; + int id; + hashbin_t *attribs; +}; + +/* + * Values used by LM-IAS attributes + */ +struct ias_value { + __u8 type; /* Value description */ + __u8 owner; /* Managed from user/kernel space */ + int charset; /* Only used by string type */ + int len; + + /* Value */ + union { + int integer; + char *string; + __u8 *oct_seq; + } t; +}; + +/* + * Attributes used by LM-IAS objects + */ +struct ias_attrib { + irda_queue_t q; /* Must be first! */ + int magic; + + char *name; /* Attribute name */ + struct ias_value *value; /* Attribute value */ +}; + +struct ias_object *irias_new_object(char *name, int id); +void irias_insert_object(struct ias_object *obj); +int irias_delete_object(struct ias_object *obj); +int irias_delete_attrib(struct ias_object *obj, struct ias_attrib *attrib, + int cleanobject); +void __irias_delete_object(struct ias_object *obj); + +void irias_add_integer_attrib(struct ias_object *obj, char *name, int value, + int user); +void irias_add_string_attrib(struct ias_object *obj, char *name, char *value, + int user); +void irias_add_octseq_attrib(struct ias_object *obj, char *name, __u8 *octets, + int len, int user); +int irias_object_change_attribute(char *obj_name, char *attrib_name, + struct ias_value *new_value); +struct ias_object *irias_find_object(char *name); +struct ias_attrib *irias_find_attrib(struct ias_object *obj, char *name); + +struct ias_value *irias_new_string_value(char *string); +struct ias_value *irias_new_integer_value(int integer); +struct ias_value *irias_new_octseq_value(__u8 *octseq , int len); +struct ias_value *irias_new_missing_value(void); +void irias_delete_value(struct ias_value *value); + +extern struct ias_value irias_missing; +extern hashbin_t *irias_objects; + +#endif diff --git a/include/net/irda/irlan_client.h b/include/net/irda/irlan_client.h new file mode 100644 index 000000000000..736dabe211e3 --- /dev/null +++ b/include/net/irda/irlan_client.h @@ -0,0 +1,42 @@ +/********************************************************************* + * + * Filename: irlan_client.h + * Version: 0.3 + * Description: IrDA LAN access layer + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Sun Aug 31 20:14:37 1997 + * Modified at: Thu Apr 22 14:13:34 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1998 Dag Brattli <dagb@cs.uit.no>, All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * Neither Dag Brattli nor University of Troms admit liability nor + * provide warranty for any of this software. This material is + * provided "AS-IS" and at no charge. + * + ********************************************************************/ + +#ifndef IRLAN_CLIENT_H +#define IRLAN_CLIENT_H + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/skbuff.h> +#include <linux/netdevice.h> + +#include <net/irda/irias_object.h> +#include <net/irda/irlan_event.h> + +void irlan_client_discovery_indication(discinfo_t *, DISCOVERY_MODE, void *); +void irlan_client_wakeup(struct irlan_cb *self, __u32 saddr, __u32 daddr); + +void irlan_client_parse_response(struct irlan_cb *self, struct sk_buff *skb); +void irlan_client_get_value_confirm(int result, __u16 obj_id, + struct ias_value *value, void *priv); +#endif diff --git a/include/net/irda/irlan_common.h b/include/net/irda/irlan_common.h new file mode 100644 index 000000000000..1c73bdbc3eb3 --- /dev/null +++ b/include/net/irda/irlan_common.h @@ -0,0 +1,222 @@ +/********************************************************************* + * + * Filename: irlan_common.h + * Version: 0.8 + * Description: IrDA LAN access layer + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Sun Aug 31 20:14:37 1997 + * Modified at: Sun Oct 31 19:41:24 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1998-1999 Dag Brattli <dagb@cs.uit.no>, + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * Neither Dag Brattli nor University of Troms admit liability nor + * provide warranty for any of this software. This material is + * provided "AS-IS" and at no charge. + * + ********************************************************************/ + +#ifndef IRLAN_H +#define IRLAN_H + +#include <asm/param.h> /* for HZ */ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/skbuff.h> +#include <linux/netdevice.h> + +#include <net/irda/irttp.h> + +#define IRLAN_MTU 1518 +#define IRLAN_TIMEOUT 10*HZ /* 10 seconds */ + +/* Command packet types */ +#define CMD_GET_PROVIDER_INFO 0 +#define CMD_GET_MEDIA_CHAR 1 +#define CMD_OPEN_DATA_CHANNEL 2 +#define CMD_CLOSE_DATA_CHAN 3 +#define CMD_RECONNECT_DATA_CHAN 4 +#define CMD_FILTER_OPERATION 5 + +/* Some responses */ +#define RSP_SUCCESS 0 +#define RSP_INSUFFICIENT_RESOURCES 1 +#define RSP_INVALID_COMMAND_FORMAT 2 +#define RSP_COMMAND_NOT_SUPPORTED 3 +#define RSP_PARAM_NOT_SUPPORTED 4 +#define RSP_VALUE_NOT_SUPPORTED 5 +#define RSP_NOT_OPEN 6 +#define RSP_AUTHENTICATION_REQUIRED 7 +#define RSP_INVALID_PASSWORD 8 +#define RSP_PROTOCOL_ERROR 9 +#define RSP_ASYNCHRONOUS_ERROR 255 + +/* Media types */ +#define MEDIA_802_3 1 +#define MEDIA_802_5 2 + +/* Filter parameters */ +#define DATA_CHAN 1 +#define FILTER_TYPE 2 +#define FILTER_MODE 3 + +/* Filter types */ +#define IRLAN_DIRECTED 0x01 +#define IRLAN_FUNCTIONAL 0x02 +#define IRLAN_GROUP 0x04 +#define IRLAN_MAC_FRAME 0x08 +#define IRLAN_MULTICAST 0x10 +#define IRLAN_BROADCAST 0x20 +#define IRLAN_IPX_SOCKET 0x40 + +/* Filter modes */ +#define ALL 1 +#define FILTER 2 +#define NONE 3 + +/* Filter operations */ +#define GET 1 +#define CLEAR 2 +#define ADD 3 +#define REMOVE 4 +#define DYNAMIC 5 + +/* Access types */ +#define ACCESS_DIRECT 1 +#define ACCESS_PEER 2 +#define ACCESS_HOSTED 3 + +#define IRLAN_BYTE 0 +#define IRLAN_SHORT 1 +#define IRLAN_ARRAY 2 + +#define IRLAN_MAX_HEADER (TTP_HEADER+LMP_HEADER+LAP_MAX_HEADER) + +/* + * IrLAN client + */ +struct irlan_client_cb { + int state; + + int open_retries; + + struct tsap_cb *tsap_ctrl; + __u32 max_sdu_size; + __u8 max_header_size; + + int access_type; /* Access type of provider */ + __u8 reconnect_key[255]; + __u8 key_len; + + __u16 recv_arb_val; + __u16 max_frame; + int filter_type; + + int unicast_open; + int broadcast_open; + + int tx_busy; + struct sk_buff_head txq; /* Transmit control queue */ + + struct iriap_cb *iriap; + + struct timer_list kick_timer; +}; + +/* + * IrLAN provider + */ +struct irlan_provider_cb { + int state; + + struct tsap_cb *tsap_ctrl; + __u32 max_sdu_size; + __u8 max_header_size; + + /* + * Store some values here which are used by the provider to parse + * the filter operations + */ + int data_chan; + int filter_type; + int filter_mode; + int filter_operation; + int filter_entry; + int access_type; /* Access type */ + __u16 send_arb_val; + + __u8 mac_address[6]; /* Generated MAC address for peer device */ +}; + +/* + * IrLAN control block + */ +struct irlan_cb { + int magic; + struct list_head dev_list; + struct net_device *dev; /* Ethernet device structure*/ + struct net_device_stats stats; + + __u32 saddr; /* Source device address */ + __u32 daddr; /* Destination device address */ + int disconnect_reason; /* Why we got disconnected */ + + int media; /* Media type */ + __u8 version[2]; /* IrLAN version */ + + struct tsap_cb *tsap_data; /* Data TSAP */ + + int use_udata; /* Use Unit Data transfers */ + + __u8 stsap_sel_data; /* Source data TSAP selector */ + __u8 dtsap_sel_data; /* Destination data TSAP selector */ + __u8 dtsap_sel_ctrl; /* Destination ctrl TSAP selector */ + + struct irlan_client_cb client; /* Client specific fields */ + struct irlan_provider_cb provider; /* Provider specific fields */ + + __u32 max_sdu_size; + __u8 max_header_size; + + wait_queue_head_t open_wait; + struct timer_list watchdog_timer; +}; + +void irlan_close(struct irlan_cb *self); +void irlan_close_tsaps(struct irlan_cb *self); + +int irlan_register_netdev(struct irlan_cb *self); +void irlan_ias_register(struct irlan_cb *self, __u8 tsap_sel); +void irlan_start_watchdog_timer(struct irlan_cb *self, int timeout); + +void irlan_open_data_tsap(struct irlan_cb *self); + +int irlan_run_ctrl_tx_queue(struct irlan_cb *self); + +struct irlan_cb *irlan_get_any(void); +void irlan_get_provider_info(struct irlan_cb *self); +void irlan_get_media_char(struct irlan_cb *self); +void irlan_open_data_channel(struct irlan_cb *self); +void irlan_close_data_channel(struct irlan_cb *self); +void irlan_set_multicast_filter(struct irlan_cb *self, int status); +void irlan_set_broadcast_filter(struct irlan_cb *self, int status); + +int irlan_insert_byte_param(struct sk_buff *skb, char *param, __u8 value); +int irlan_insert_short_param(struct sk_buff *skb, char *param, __u16 value); +int irlan_insert_string_param(struct sk_buff *skb, char *param, char *value); +int irlan_insert_array_param(struct sk_buff *skb, char *name, __u8 *value, + __u16 value_len); + +int irlan_extract_param(__u8 *buf, char *name, char *value, __u16 *len); + +#endif + + diff --git a/include/net/irda/irlan_eth.h b/include/net/irda/irlan_eth.h new file mode 100644 index 000000000000..9a9b3619d305 --- /dev/null +++ b/include/net/irda/irlan_eth.h @@ -0,0 +1,33 @@ +/********************************************************************* + * + * Filename: irlan_eth.h + * Version: + * Description: + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Thu Oct 15 08:36:58 1998 + * Modified at: Fri May 14 23:29:00 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1998-1999 Dag Brattli, All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * Neither Dag Brattli nor University of Troms admit liability nor + * provide warranty for any of this software. This material is + * provided "AS-IS" and at no charge. + * + ********************************************************************/ + +#ifndef IRLAN_ETH_H +#define IRLAN_ETH_H + +struct net_device *alloc_irlandev(const char *name); +int irlan_eth_receive(void *instance, void *sap, struct sk_buff *skb); + +void irlan_eth_flow_indication( void *instance, void *sap, LOCAL_FLOW flow); +void irlan_eth_send_gratuitous_arp(struct net_device *dev); +#endif diff --git a/include/net/irda/irlan_event.h b/include/net/irda/irlan_event.h new file mode 100644 index 000000000000..b9baac9eb8b6 --- /dev/null +++ b/include/net/irda/irlan_event.h @@ -0,0 +1,81 @@ +/********************************************************************* + * + * Filename: irlan_event.h + * Version: + * Description: LAN access + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Sun Aug 31 20:14:37 1997 + * Modified at: Tue Feb 2 09:45:17 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1997 Dag Brattli <dagb@cs.uit.no>, All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * Neither Dag Brattli nor University of Troms admit liability nor + * provide warranty for any of this software. This material is + * provided "AS-IS" and at no charge. + * + ********************************************************************/ + +#ifndef IRLAN_EVENT_H +#define IRLAN_EVENT_H + +#include <linux/kernel.h> +#include <linux/skbuff.h> + +#include <net/irda/irlan_common.h> + +typedef enum { + IRLAN_IDLE, + IRLAN_QUERY, + IRLAN_CONN, + IRLAN_INFO, + IRLAN_MEDIA, + IRLAN_OPEN, + IRLAN_WAIT, + IRLAN_ARB, + IRLAN_DATA, + IRLAN_CLOSE, + IRLAN_SYNC +} IRLAN_STATE; + +typedef enum { + IRLAN_DISCOVERY_INDICATION, + IRLAN_IAS_PROVIDER_AVAIL, + IRLAN_IAS_PROVIDER_NOT_AVAIL, + IRLAN_LAP_DISCONNECT, + IRLAN_LMP_DISCONNECT, + IRLAN_CONNECT_COMPLETE, + IRLAN_DATA_INDICATION, + IRLAN_DATA_CONNECT_INDICATION, + IRLAN_RETRY_CONNECT, + + IRLAN_CONNECT_INDICATION, + IRLAN_GET_INFO_CMD, + IRLAN_GET_MEDIA_CMD, + IRLAN_OPEN_DATA_CMD, + IRLAN_FILTER_CONFIG_CMD, + + IRLAN_CHECK_CON_ARB, + IRLAN_PROVIDER_SIGNAL, + + IRLAN_WATCHDOG_TIMEOUT, +} IRLAN_EVENT; + +extern char *irlan_state[]; + +void irlan_do_client_event(struct irlan_cb *self, IRLAN_EVENT event, + struct sk_buff *skb); + +void irlan_do_provider_event(struct irlan_cb *self, IRLAN_EVENT event, + struct sk_buff *skb); + +void irlan_next_client_state(struct irlan_cb *self, IRLAN_STATE state); +void irlan_next_provider_state(struct irlan_cb *self, IRLAN_STATE state); + +#endif diff --git a/include/net/irda/irlan_filter.h b/include/net/irda/irlan_filter.h new file mode 100644 index 000000000000..3afeb6c94ea4 --- /dev/null +++ b/include/net/irda/irlan_filter.h @@ -0,0 +1,33 @@ +/********************************************************************* + * + * Filename: irlan_filter.h + * Version: + * Description: + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Fri Jan 29 15:24:08 1999 + * Modified at: Sun Feb 7 23:35:31 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1998 Dag Brattli, All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * Neither Dag Brattli nor University of Troms admit liability nor + * provide warranty for any of this software. This material is + * provided "AS-IS" and at no charge. + * + ********************************************************************/ + +#ifndef IRLAN_FILTER_H +#define IRLAN_FILTER_H + +void irlan_check_command_param(struct irlan_cb *self, char *param, + char *value); +void irlan_filter_request(struct irlan_cb *self, struct sk_buff *skb); +int irlan_print_filter(struct seq_file *seq, int filter_type); + +#endif /* IRLAN_FILTER_H */ diff --git a/include/net/irda/irlan_provider.h b/include/net/irda/irlan_provider.h new file mode 100644 index 000000000000..ca51d5b7c999 --- /dev/null +++ b/include/net/irda/irlan_provider.h @@ -0,0 +1,52 @@ +/********************************************************************* + * + * Filename: irlan_provider.h + * Version: 0.1 + * Description: IrDA LAN access layer + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Sun Aug 31 20:14:37 1997 + * Modified at: Sun May 9 12:26:11 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1998-1999 Dag Brattli <dagb@cs.uit.no>, All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * Neither Dag Brattli nor University of Troms admit liability nor + * provide warranty for any of this software. This material is + * provided "AS-IS" and at no charge. + * + ********************************************************************/ + +#ifndef IRLAN_SERVER_H +#define IRLAN_SERVER_H + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/skbuff.h> +#include <linux/netdevice.h> + +#include <net/irda/irlan_common.h> + +void irlan_provider_ctrl_disconnect_indication(void *instance, void *sap, + LM_REASON reason, + struct sk_buff *skb); + + +void irlan_provider_connect_response(struct irlan_cb *, struct tsap_cb *); + +int irlan_parse_open_data_cmd(struct irlan_cb *self, struct sk_buff *skb); +int irlan_provider_parse_command(struct irlan_cb *self, int cmd, + struct sk_buff *skb); + +void irlan_provider_send_reply(struct irlan_cb *self, int command, + int ret_code); +int irlan_provider_open_ctrl_tsap(struct irlan_cb *self); + +#endif + + diff --git a/include/net/irda/irlap.h b/include/net/irda/irlap.h new file mode 100644 index 000000000000..f55e86e75030 --- /dev/null +++ b/include/net/irda/irlap.h @@ -0,0 +1,290 @@ +/********************************************************************* + * + * Filename: irlap.h + * Version: 0.8 + * Description: An IrDA LAP driver for Linux + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Mon Aug 4 20:40:53 1997 + * Modified at: Fri Dec 10 13:21:17 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1998-1999 Dag Brattli <dagb@cs.uit.no>, + * All Rights Reserved. + * Copyright (c) 2000-2002 Jean Tourrilhes <jt@hpl.hp.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * Neither Dag Brattli nor University of Troms admit liability nor + * provide warranty for any of this software. This material is + * provided "AS-IS" and at no charge. + * + ********************************************************************/ + +#ifndef IRLAP_H +#define IRLAP_H + +#include <linux/config.h> +#include <linux/types.h> +#include <linux/skbuff.h> +#include <linux/netdevice.h> +#include <linux/timer.h> + +#include <net/irda/irqueue.h> /* irda_queue_t */ +#include <net/irda/qos.h> /* struct qos_info */ +#include <net/irda/discovery.h> /* discovery_t */ +#include <net/irda/irlap_event.h> /* IRLAP_STATE, ... */ +#include <net/irda/irmod.h> /* struct notify_t */ + +#define CONFIG_IRDA_DYNAMIC_WINDOW 1 + +#define LAP_RELIABLE 1 +#define LAP_UNRELIABLE 0 + +#define LAP_ADDR_HEADER 1 /* IrLAP Address Header */ +#define LAP_CTRL_HEADER 1 /* IrLAP Control Header */ + +/* May be different when we get VFIR */ +#define LAP_MAX_HEADER (LAP_ADDR_HEADER + LAP_CTRL_HEADER) + +#define BROADCAST 0xffffffff /* Broadcast device address */ +#define CBROADCAST 0xfe /* Connection broadcast address */ +#define XID_FORMAT 0x01 /* Discovery XID format */ + +/* Nobody seems to use this constant. */ +#define LAP_WINDOW_SIZE 8 +/* We keep the LAP queue very small to minimise the amount of buffering. + * this improve latency and reduce resource consumption. + * This work only because we have synchronous refilling of IrLAP through + * the flow control mechanism (via scheduler and IrTTP). + * 2 buffers is the minimum we can work with, one that we send while polling + * IrTTP, and another to know that we should not send the pf bit. + * Jean II */ +#define LAP_HIGH_THRESHOLD 2 +/* Some rare non TTP clients don't implement flow control, and + * so don't comply with the above limit (and neither with this one). + * For IAP and management, it doesn't matter, because they never transmit much. + *.For IrLPT, this should be fixed. + * - Jean II */ +#define LAP_MAX_QUEUE 10 +/* Please note that all IrDA management frames (LMP/TTP conn req/disc and + * IAS queries) fall in the second category and are sent to LAP even if TTP + * is stopped. This means that those frames will wait only a maximum of + * two (2) data frames before beeing sent on the "wire", which speed up + * new socket setup when the link is saturated. + * Same story for two sockets competing for the medium : if one saturates + * the LAP, when the other want to transmit it only has to wait for + * maximum three (3) packets (2 + one scheduling), which improve performance + * of delay sensitive applications. + * Jean II */ + +#define NR_EXPECTED 1 +#define NR_UNEXPECTED 0 +#define NR_INVALID -1 + +#define NS_EXPECTED 1 +#define NS_UNEXPECTED 0 +#define NS_INVALID -1 + +/* + * Meta information passed within the IrLAP state machine + */ +struct irlap_info { + __u8 caddr; /* Connection address */ + __u8 control; /* Frame type */ + __u8 cmd; + + __u32 saddr; + __u32 daddr; + + int pf; /* Poll/final bit set */ + + __u8 nr; /* Sequence number of next frame expected */ + __u8 ns; /* Sequence number of frame sent */ + + int S; /* Number of slots */ + int slot; /* Random chosen slot */ + int s; /* Current slot */ + + discovery_t *discovery; /* Discovery information */ +}; + +/* Main structure of IrLAP */ +struct irlap_cb { + irda_queue_t q; /* Must be first */ + magic_t magic; + + /* Device we are attached to */ + struct net_device *netdev; + char hw_name[2*IFNAMSIZ + 1]; + + /* Connection state */ + volatile IRLAP_STATE state; /* Current state */ + + /* Timers used by IrLAP */ + struct timer_list query_timer; + struct timer_list slot_timer; + struct timer_list discovery_timer; + struct timer_list final_timer; + struct timer_list poll_timer; + struct timer_list wd_timer; + struct timer_list backoff_timer; + + /* Media busy stuff */ + struct timer_list media_busy_timer; + int media_busy; + + /* Timeouts which will be different with different turn time */ + int slot_timeout; + int poll_timeout; + int final_timeout; + int wd_timeout; + + struct sk_buff_head txq; /* Frames to be transmitted */ + struct sk_buff_head txq_ultra; + + __u8 caddr; /* Connection address */ + __u32 saddr; /* Source device address */ + __u32 daddr; /* Destination device address */ + + int retry_count; /* Times tried to establish connection */ + int add_wait; /* True if we are waiting for frame */ + + __u8 connect_pending; + __u8 disconnect_pending; + + /* To send a faster RR if tx queue empty */ +#ifdef CONFIG_IRDA_FAST_RR + int fast_RR_timeout; + int fast_RR; +#endif /* CONFIG_IRDA_FAST_RR */ + + int N1; /* N1 * F-timer = Negitiated link disconnect warning threshold */ + int N2; /* N2 * F-timer = Negitiated link disconnect time */ + int N3; /* Connection retry count */ + + int local_busy; + int remote_busy; + int xmitflag; + + __u8 vs; /* Next frame to be sent */ + __u8 vr; /* Next frame to be received */ + __u8 va; /* Last frame acked */ + int window; /* Nr of I-frames allowed to send */ + int window_size; /* Current negotiated window size */ + +#ifdef CONFIG_IRDA_DYNAMIC_WINDOW + __u32 line_capacity; /* Number of bytes allowed to send */ + __u32 bytes_left; /* Number of bytes still allowed to transmit */ +#endif /* CONFIG_IRDA_DYNAMIC_WINDOW */ + + struct sk_buff_head wx_list; + + __u8 ack_required; + + /* XID parameters */ + __u8 S; /* Number of slots */ + __u8 slot; /* Random chosen slot */ + __u8 s; /* Current slot */ + int frame_sent; /* Have we sent reply? */ + + hashbin_t *discovery_log; + discovery_t *discovery_cmd; + + __u32 speed; /* Link speed */ + + struct qos_info qos_tx; /* QoS requested by peer */ + struct qos_info qos_rx; /* QoS requested by self */ + struct qos_info *qos_dev; /* QoS supported by device */ + + notify_t notify; /* Callbacks to IrLMP */ + + int mtt_required; /* Minumum turnaround time required */ + int xbofs_delay; /* Nr of XBOF's used to MTT */ + int bofs_count; /* Negotiated extra BOFs */ + int next_bofs; /* Negotiated extra BOFs after next frame */ +}; + +/* + * Function prototypes + */ +int irlap_init(void); +void irlap_cleanup(void); + +struct irlap_cb *irlap_open(struct net_device *dev, struct qos_info *qos, + const char *hw_name); +void irlap_close(struct irlap_cb *self); + +void irlap_connect_request(struct irlap_cb *self, __u32 daddr, + struct qos_info *qos, int sniff); +void irlap_connect_response(struct irlap_cb *self, struct sk_buff *skb); +void irlap_connect_indication(struct irlap_cb *self, struct sk_buff *skb); +void irlap_connect_confirm(struct irlap_cb *, struct sk_buff *skb); + +void irlap_data_indication(struct irlap_cb *, struct sk_buff *, int unreliable); +void irlap_data_request(struct irlap_cb *, struct sk_buff *, int unreliable); + +#ifdef CONFIG_IRDA_ULTRA +void irlap_unitdata_request(struct irlap_cb *, struct sk_buff *); +void irlap_unitdata_indication(struct irlap_cb *, struct sk_buff *); +#endif /* CONFIG_IRDA_ULTRA */ + +void irlap_disconnect_request(struct irlap_cb *); +void irlap_disconnect_indication(struct irlap_cb *, LAP_REASON reason); + +void irlap_status_indication(struct irlap_cb *, int quality_of_link); + +void irlap_test_request(__u8 *info, int len); + +void irlap_discovery_request(struct irlap_cb *, discovery_t *discovery); +void irlap_discovery_confirm(struct irlap_cb *, hashbin_t *discovery_log); +void irlap_discovery_indication(struct irlap_cb *, discovery_t *discovery); + +void irlap_reset_indication(struct irlap_cb *self); +void irlap_reset_confirm(void); + +void irlap_update_nr_received(struct irlap_cb *, int nr); +int irlap_validate_nr_received(struct irlap_cb *, int nr); +int irlap_validate_ns_received(struct irlap_cb *, int ns); + +int irlap_generate_rand_time_slot(int S, int s); +void irlap_initiate_connection_state(struct irlap_cb *); +void irlap_flush_all_queues(struct irlap_cb *); +void irlap_wait_min_turn_around(struct irlap_cb *, struct qos_info *); + +void irlap_apply_default_connection_parameters(struct irlap_cb *self); +void irlap_apply_connection_parameters(struct irlap_cb *self, int now); + +#define IRLAP_GET_HEADER_SIZE(self) (LAP_MAX_HEADER) +#define IRLAP_GET_TX_QUEUE_LEN(self) skb_queue_len(&self->txq) + +/* Return TRUE if the node is in primary mode (i.e. master) + * - Jean II */ +static inline int irlap_is_primary(struct irlap_cb *self) +{ + int ret; + switch(self->state) { + case LAP_XMIT_P: + case LAP_NRM_P: + ret = 1; + break; + case LAP_XMIT_S: + case LAP_NRM_S: + ret = 0; + break; + default: + ret = -1; + } + return(ret); +} + +/* Clear a pending IrLAP disconnect. - Jean II */ +static inline void irlap_clear_disconnect(struct irlap_cb *self) +{ + self->disconnect_pending = FALSE; +} + +#endif diff --git a/include/net/irda/irlap_event.h b/include/net/irda/irlap_event.h new file mode 100644 index 000000000000..2ae2e119ef4b --- /dev/null +++ b/include/net/irda/irlap_event.h @@ -0,0 +1,131 @@ +/********************************************************************* + * + * + * Filename: irlap_event.h + * Version: 0.1 + * Description: + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Sat Aug 16 00:59:29 1997 + * Modified at: Tue Dec 21 11:20:30 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1998-1999 Dag Brattli <dagb@cs.uit.no>, + * All Rights Reserved. + * Copyright (c) 2000-2002 Jean Tourrilhes <jt@hpl.hp.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + ********************************************************************/ + +#ifndef IRLAP_EVENT_H +#define IRLAP_EVENT_H + +#include <net/irda/irda.h> + +/* A few forward declarations (to make compiler happy) */ +struct irlap_cb; +struct irlap_info; + +/* IrLAP States */ +typedef enum { + LAP_NDM, /* Normal disconnected mode */ + LAP_QUERY, + LAP_REPLY, + LAP_CONN, /* Connect indication */ + LAP_SETUP, /* Setting up connection */ + LAP_OFFLINE, /* A really boring state */ + LAP_XMIT_P, + LAP_PCLOSE, + LAP_NRM_P, /* Normal response mode as primary */ + LAP_RESET_WAIT, + LAP_RESET, + LAP_NRM_S, /* Normal response mode as secondary */ + LAP_XMIT_S, + LAP_SCLOSE, + LAP_RESET_CHECK, +} IRLAP_STATE; + +/* IrLAP Events */ +typedef enum { + /* Services events */ + DISCOVERY_REQUEST, + CONNECT_REQUEST, + CONNECT_RESPONSE, + DISCONNECT_REQUEST, + DATA_REQUEST, + RESET_REQUEST, + RESET_RESPONSE, + + /* Send events */ + SEND_I_CMD, + SEND_UI_FRAME, + + /* Receive events */ + RECV_DISCOVERY_XID_CMD, + RECV_DISCOVERY_XID_RSP, + RECV_SNRM_CMD, + RECV_TEST_CMD, + RECV_TEST_RSP, + RECV_UA_RSP, + RECV_DM_RSP, + RECV_RD_RSP, + RECV_I_CMD, + RECV_I_RSP, + RECV_UI_FRAME, + RECV_FRMR_RSP, + RECV_RR_CMD, + RECV_RR_RSP, + RECV_RNR_CMD, + RECV_RNR_RSP, + RECV_REJ_CMD, + RECV_REJ_RSP, + RECV_SREJ_CMD, + RECV_SREJ_RSP, + RECV_DISC_CMD, + + /* Timer events */ + SLOT_TIMER_EXPIRED, + QUERY_TIMER_EXPIRED, + FINAL_TIMER_EXPIRED, + POLL_TIMER_EXPIRED, + DISCOVERY_TIMER_EXPIRED, + WD_TIMER_EXPIRED, + BACKOFF_TIMER_EXPIRED, + MEDIA_BUSY_TIMER_EXPIRED, +} IRLAP_EVENT; + +/* + * Disconnect reason code + */ +typedef enum { /* FIXME check the two first reason codes */ + LAP_DISC_INDICATION=1, /* Received a disconnect request from peer */ + LAP_NO_RESPONSE, /* To many retransmits without response */ + LAP_RESET_INDICATION, /* To many retransmits, or invalid nr/ns */ + LAP_FOUND_NONE, /* No devices were discovered */ + LAP_MEDIA_BUSY, + LAP_PRIMARY_CONFLICT, +} LAP_REASON; + +extern const char *irlap_state[]; + +void irlap_do_event(struct irlap_cb *self, IRLAP_EVENT event, + struct sk_buff *skb, struct irlap_info *info); +void irlap_print_event(IRLAP_EVENT event); + +extern int irlap_qos_negotiate(struct irlap_cb *self, struct sk_buff *skb); + +#endif diff --git a/include/net/irda/irlap_frame.h b/include/net/irda/irlap_frame.h new file mode 100644 index 000000000000..3452ae257c84 --- /dev/null +++ b/include/net/irda/irlap_frame.h @@ -0,0 +1,142 @@ +/********************************************************************* + * + * Filename: irlap_frame.h + * Version: 0.9 + * Description: IrLAP frame declarations + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Tue Aug 19 10:27:26 1997 + * Modified at: Sat Dec 25 21:07:26 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1997-1999 Dag Brattli <dagb@cs.uit.no>, + * All Rights Reserved. + * Copyright (c) 2000-2002 Jean Tourrilhes <jt@hpl.hp.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + ********************************************************************/ + +#ifndef IRLAP_FRAME_H +#define IRLAP_FRAME_H + +#include <linux/skbuff.h> + +#include <net/irda/irda.h> + +/* A few forward declarations (to make compiler happy) */ +struct irlap_cb; +struct discovery_t; + +/* Frame types and templates */ +#define INVALID 0xff + +/* Unnumbered (U) commands */ +#define SNRM_CMD 0x83 /* Set Normal Response Mode */ +#define DISC_CMD 0x43 /* Disconnect */ +#define XID_CMD 0x2f /* Exchange Station Identification */ +#define TEST_CMD 0xe3 /* Test */ + +/* Unnumbered responses */ +#define RNRM_RSP 0x83 /* Request Normal Response Mode */ +#define UA_RSP 0x63 /* Unnumbered Acknowledgement */ +#define FRMR_RSP 0x87 /* Frame Reject */ +#define DM_RSP 0x0f /* Disconnect Mode */ +#define RD_RSP 0x43 /* Request Disconnection */ +#define XID_RSP 0xaf /* Exchange Station Identification */ +#define TEST_RSP 0xe3 /* Test frame */ + +/* Supervisory (S) */ +#define RR 0x01 /* Receive Ready */ +#define REJ 0x09 /* Reject */ +#define RNR 0x05 /* Receive Not Ready */ +#define SREJ 0x0d /* Selective Reject */ + +/* Information (I) */ +#define I_FRAME 0x00 /* Information Format */ +#define UI_FRAME 0x03 /* Unnumbered Information */ + +#define CMD_FRAME 0x01 +#define RSP_FRAME 0x00 + +#define PF_BIT 0x10 /* Poll/final bit */ + +struct xid_frame { + __u8 caddr; /* Connection address */ + __u8 control; + __u8 ident; /* Should always be XID_FORMAT */ + __u32 saddr; /* Source device address */ + __u32 daddr; /* Destination device address */ + __u8 flags; /* Discovery flags */ + __u8 slotnr; + __u8 version; +} IRDA_PACK; + +struct test_frame { + __u8 caddr; /* Connection address */ + __u8 control; + __u32 saddr; /* Source device address */ + __u32 daddr; /* Destination device address */ +} IRDA_PACK; + +struct ua_frame { + __u8 caddr; + __u8 control; + + __u32 saddr; /* Source device address */ + __u32 daddr; /* Dest device address */ +} IRDA_PACK; + +struct i_frame { + __u8 caddr; + __u8 control; +} IRDA_PACK; + +struct snrm_frame { + __u8 caddr; + __u8 control; + __u32 saddr; + __u32 daddr; + __u8 ncaddr; +} IRDA_PACK; + +void irlap_queue_xmit(struct irlap_cb *self, struct sk_buff *skb); +void irlap_send_discovery_xid_frame(struct irlap_cb *, int S, __u8 s, + __u8 command, + struct discovery_t *discovery); +void irlap_send_snrm_frame(struct irlap_cb *, struct qos_info *); +void irlap_send_test_frame(struct irlap_cb *self, __u8 caddr, __u32 daddr, + struct sk_buff *cmd); +void irlap_send_ua_response_frame(struct irlap_cb *, struct qos_info *); +void irlap_send_dm_frame(struct irlap_cb *self); +void irlap_send_rd_frame(struct irlap_cb *self); +void irlap_send_disc_frame(struct irlap_cb *self); +void irlap_send_rr_frame(struct irlap_cb *self, int command); + +void irlap_send_data_primary(struct irlap_cb *, struct sk_buff *); +void irlap_send_data_primary_poll(struct irlap_cb *, struct sk_buff *); +void irlap_send_data_secondary(struct irlap_cb *, struct sk_buff *); +void irlap_send_data_secondary_final(struct irlap_cb *, struct sk_buff *); +void irlap_resend_rejected_frames(struct irlap_cb *, int command); +void irlap_resend_rejected_frame(struct irlap_cb *self, int command); + +void irlap_send_ui_frame(struct irlap_cb *self, struct sk_buff *skb, + __u8 caddr, int command); + +extern int irlap_insert_qos_negotiation_params(struct irlap_cb *self, + struct sk_buff *skb); + +#endif diff --git a/include/net/irda/irlmp.h b/include/net/irda/irlmp.h new file mode 100644 index 000000000000..86aefb1fda5e --- /dev/null +++ b/include/net/irda/irlmp.h @@ -0,0 +1,295 @@ +/********************************************************************* + * + * Filename: irlmp.h + * Version: 0.9 + * Description: IrDA Link Management Protocol (LMP) layer + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Sun Aug 17 20:54:32 1997 + * Modified at: Fri Dec 10 13:23:01 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1998-1999 Dag Brattli <dagb@cs.uit.no>, + * All Rights Reserved. + * Copyright (c) 2000-2002 Jean Tourrilhes <jt@hpl.hp.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * Neither Dag Brattli nor University of Troms admit liability nor + * provide warranty for any of this software. This material is + * provided "AS-IS" and at no charge. + * + ********************************************************************/ + +#ifndef IRLMP_H +#define IRLMP_H + +#include <asm/param.h> /* for HZ */ + +#include <linux/config.h> +#include <linux/types.h> + +#include <net/irda/irda.h> +#include <net/irda/qos.h> +#include <net/irda/irlap.h> /* LAP_MAX_HEADER, ... */ +#include <net/irda/irlmp_event.h> +#include <net/irda/irqueue.h> +#include <net/irda/discovery.h> + +/* LSAP-SEL's */ +#define LSAP_MASK 0x7f +#define LSAP_IAS 0x00 +#define LSAP_ANY 0xff +#define LSAP_MAX 0x6f /* 0x70-0x7f are reserved */ +#define LSAP_CONNLESS 0x70 /* Connectionless LSAP, mostly used for Ultra */ + +#define DEV_ADDR_ANY 0xffffffff + +#define LMP_HEADER 2 /* Dest LSAP + Source LSAP */ +#define LMP_CONTROL_HEADER 4 +#define LMP_PID_HEADER 1 /* Used by Ultra */ +#define LMP_MAX_HEADER (LMP_CONTROL_HEADER+LAP_MAX_HEADER) + +#define LM_MAX_CONNECTIONS 10 + +#define LM_IDLE_TIMEOUT 2*HZ /* 2 seconds for now */ + +typedef enum { + S_PNP = 0, + S_PDA, + S_COMPUTER, + S_PRINTER, + S_MODEM, + S_FAX, + S_LAN, + S_TELEPHONY, + S_COMM, + S_OBEX, + S_ANY, + S_END, +} SERVICE; + +/* For selective discovery */ +typedef void (*DISCOVERY_CALLBACK1) (discinfo_t *, DISCOVERY_MODE, void *); +/* For expiry (the same) */ +typedef void (*DISCOVERY_CALLBACK2) (discinfo_t *, DISCOVERY_MODE, void *); + +typedef struct { + irda_queue_t queue; /* Must be first */ + + __u16_host_order hints; /* Hint bits */ +} irlmp_service_t; + +typedef struct { + irda_queue_t queue; /* Must be first */ + + __u16_host_order hint_mask; + + DISCOVERY_CALLBACK1 disco_callback; /* Selective discovery */ + DISCOVERY_CALLBACK2 expir_callback; /* Selective expiration */ + void *priv; /* Used to identify client */ +} irlmp_client_t; + +/* + * Information about each logical LSAP connection + */ +struct lsap_cb { + irda_queue_t queue; /* Must be first */ + magic_t magic; + + unsigned long connected; /* set_bit used on this */ + int persistent; + + __u8 slsap_sel; /* Source (this) LSAP address */ + __u8 dlsap_sel; /* Destination LSAP address (if connected) */ +#ifdef CONFIG_IRDA_ULTRA + __u8 pid; /* Used by connectionless LSAP */ +#endif /* CONFIG_IRDA_ULTRA */ + struct sk_buff *conn_skb; /* Store skb here while connecting */ + + struct timer_list watchdog_timer; + + IRLMP_STATE lsap_state; /* Connection state */ + notify_t notify; /* Indication/Confirm entry points */ + struct qos_info qos; /* QoS for this connection */ + + struct lap_cb *lap; /* Pointer to LAP connection structure */ +}; + +/* + * Used for caching the last slsap->dlsap->handle mapping + * + * We don't need to keep/match the remote address in the cache because + * we are associated with a specific LAP (which implies it). + * Jean II + */ +typedef struct { + int valid; + + __u8 slsap_sel; + __u8 dlsap_sel; + struct lsap_cb *lsap; +} CACHE_ENTRY; + +/* + * Information about each registred IrLAP layer + */ +struct lap_cb { + irda_queue_t queue; /* Must be first */ + magic_t magic; + + int reason; /* LAP disconnect reason */ + + IRLMP_STATE lap_state; + + struct irlap_cb *irlap; /* Instance of IrLAP layer */ + hashbin_t *lsaps; /* LSAP associated with this link */ + struct lsap_cb *flow_next; /* Next lsap to be polled for Tx */ + + __u8 caddr; /* Connection address */ + __u32 saddr; /* Source device address */ + __u32 daddr; /* Destination device address */ + + struct qos_info *qos; /* LAP QoS for this session */ + struct timer_list idle_timer; + +#ifdef CONFIG_IRDA_CACHE_LAST_LSAP + /* The lsap cache was moved from struct irlmp_cb to here because + * it must be associated with the specific LAP. Also, this + * improves performance. - Jean II */ + CACHE_ENTRY cache; /* Caching last slsap->dlsap->handle mapping */ +#endif +}; + +/* + * Main structure for IrLMP + */ +struct irlmp_cb { + magic_t magic; + + __u8 conflict_flag; + + discovery_t discovery_cmd; /* Discovery command to use by IrLAP */ + discovery_t discovery_rsp; /* Discovery response to use by IrLAP */ + + /* Last lsap picked automatically by irlmp_find_free_slsap() */ + int last_lsap_sel; + + struct timer_list discovery_timer; + + hashbin_t *links; /* IrLAP connection table */ + hashbin_t *unconnected_lsaps; + hashbin_t *clients; + hashbin_t *services; + + hashbin_t *cachelog; /* Current discovery log */ + + int running; + + __u16_host_order hints; /* Hint bits */ +}; + +/* Prototype declarations */ +int irlmp_init(void); +void irlmp_cleanup(void); +struct lsap_cb *irlmp_open_lsap(__u8 slsap, notify_t *notify, __u8 pid); +void irlmp_close_lsap( struct lsap_cb *self); + +__u16 irlmp_service_to_hint(int service); +void *irlmp_register_service(__u16 hints); +int irlmp_unregister_service(void *handle); +void *irlmp_register_client(__u16 hint_mask, DISCOVERY_CALLBACK1 disco_clb, + DISCOVERY_CALLBACK2 expir_clb, void *priv); +int irlmp_unregister_client(void *handle); +int irlmp_update_client(void *handle, __u16 hint_mask, + DISCOVERY_CALLBACK1 disco_clb, + DISCOVERY_CALLBACK2 expir_clb, void *priv); + +void irlmp_register_link(struct irlap_cb *, __u32 saddr, notify_t *); +void irlmp_unregister_link(__u32 saddr); + +int irlmp_connect_request(struct lsap_cb *, __u8 dlsap_sel, + __u32 saddr, __u32 daddr, + struct qos_info *, struct sk_buff *); +void irlmp_connect_indication(struct lsap_cb *self, struct sk_buff *skb); +int irlmp_connect_response(struct lsap_cb *, struct sk_buff *); +void irlmp_connect_confirm(struct lsap_cb *, struct sk_buff *); +struct lsap_cb *irlmp_dup(struct lsap_cb *self, void *instance); + +void irlmp_disconnect_indication(struct lsap_cb *self, LM_REASON reason, + struct sk_buff *userdata); +int irlmp_disconnect_request(struct lsap_cb *, struct sk_buff *userdata); + +void irlmp_discovery_confirm(hashbin_t *discovery_log, DISCOVERY_MODE mode); +void irlmp_discovery_request(int nslots); +discinfo_t *irlmp_get_discoveries(int *pn, __u16 mask, int nslots); +void irlmp_do_expiry(void); +void irlmp_do_discovery(int nslots); +discovery_t *irlmp_get_discovery_response(void); +void irlmp_discovery_expiry(discinfo_t *expiry, int number); + +int irlmp_data_request(struct lsap_cb *, struct sk_buff *); +void irlmp_data_indication(struct lsap_cb *, struct sk_buff *); + +int irlmp_udata_request(struct lsap_cb *, struct sk_buff *); +void irlmp_udata_indication(struct lsap_cb *, struct sk_buff *); + +#ifdef CONFIG_IRDA_ULTRA +int irlmp_connless_data_request(struct lsap_cb *, struct sk_buff *, __u8); +void irlmp_connless_data_indication(struct lsap_cb *, struct sk_buff *); +#endif /* CONFIG_IRDA_ULTRA */ + +void irlmp_status_indication(struct lap_cb *, LINK_STATUS link, LOCK_STATUS lock); +void irlmp_flow_indication(struct lap_cb *self, LOCAL_FLOW flow); + +LM_REASON irlmp_convert_lap_reason(LAP_REASON); + +static inline __u32 irlmp_get_saddr(const struct lsap_cb *self) +{ + return (self && self->lap) ? self->lap->saddr : 0; +} + +static inline __u32 irlmp_get_daddr(const struct lsap_cb *self) +{ + return (self && self->lap) ? self->lap->daddr : 0; +} + +extern const char *irlmp_reasons[]; +extern int sysctl_discovery_timeout; +extern int sysctl_discovery_slots; +extern int sysctl_discovery; +extern int sysctl_lap_keepalive_time; /* in ms, default is LM_IDLE_TIMEOUT */ +extern struct irlmp_cb *irlmp; + +/* Check if LAP queue is full. + * Used by IrTTP for low control, see comments in irlap.h - Jean II */ +static inline int irlmp_lap_tx_queue_full(struct lsap_cb *self) +{ + if (self == NULL) + return 0; + if (self->lap == NULL) + return 0; + if (self->lap->irlap == NULL) + return 0; + + return(IRLAP_GET_TX_QUEUE_LEN(self->lap->irlap) >= LAP_HIGH_THRESHOLD); +} + +/* After doing a irlmp_dup(), this get one of the two socket back into + * a state where it's waiting incomming connections. + * Note : this can be used *only* if the socket is not yet connected + * (i.e. NO irlmp_connect_response() done on this socket). + * - Jean II */ +static inline void irlmp_listen(struct lsap_cb *self) +{ + self->dlsap_sel = LSAP_ANY; + self->lap = NULL; + self->lsap_state = LSAP_DISCONNECTED; + /* Started when we received the LM_CONNECT_INDICATION */ + del_timer(&self->watchdog_timer); +} + +#endif diff --git a/include/net/irda/irlmp_event.h b/include/net/irda/irlmp_event.h new file mode 100644 index 000000000000..03c6f81a502a --- /dev/null +++ b/include/net/irda/irlmp_event.h @@ -0,0 +1,98 @@ +/********************************************************************* + * + * Filename: irlmp_event.h + * Version: 0.1 + * Description: IrDA-LMP event handling + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Mon Aug 4 20:40:53 1997 + * Modified at: Thu Jul 8 12:18:54 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1997, 1999 Dag Brattli <dagb@cs.uit.no>, + * All Rights Reserved. + * Copyright (c) 2000-2002 Jean Tourrilhes <jt@hpl.hp.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * Neither Dag Brattli nor University of Troms admit liability nor + * provide warranty for any of this software. This material is + * provided "AS-IS" and at no charge. + * + ********************************************************************/ + +#ifndef IRLMP_EVENT_H +#define IRLMP_EVENT_H + +/* A few forward declarations (to make compiler happy) */ +struct irlmp_cb; +struct lsap_cb; +struct lap_cb; +struct discovery_t; + +/* LAP states */ +typedef enum { + /* IrLAP connection control states */ + LAP_STANDBY, /* No LAP connection */ + LAP_U_CONNECT, /* Starting LAP connection */ + LAP_ACTIVE, /* LAP connection is active */ +} IRLMP_STATE; + +/* LSAP connection control states */ +typedef enum { + LSAP_DISCONNECTED, /* No LSAP connection */ + LSAP_CONNECT, /* Connect indication from peer */ + LSAP_CONNECT_PEND, /* Connect request from service user */ + LSAP_DATA_TRANSFER_READY, /* LSAP connection established */ + LSAP_SETUP, /* Trying to set up LSAP connection */ + LSAP_SETUP_PEND, /* Request to start LAP connection */ +} LSAP_STATE; + +typedef enum { + /* LSAP events */ + LM_CONNECT_REQUEST, + LM_CONNECT_CONFIRM, + LM_CONNECT_RESPONSE, + LM_CONNECT_INDICATION, + + LM_DISCONNECT_INDICATION, + LM_DISCONNECT_REQUEST, + + LM_DATA_REQUEST, + LM_UDATA_REQUEST, + LM_DATA_INDICATION, + LM_UDATA_INDICATION, + + LM_WATCHDOG_TIMEOUT, + + /* IrLAP events */ + LM_LAP_CONNECT_REQUEST, + LM_LAP_CONNECT_INDICATION, + LM_LAP_CONNECT_CONFIRM, + LM_LAP_DISCONNECT_INDICATION, + LM_LAP_DISCONNECT_REQUEST, + LM_LAP_DISCOVERY_REQUEST, + LM_LAP_DISCOVERY_CONFIRM, + LM_LAP_IDLE_TIMEOUT, +} IRLMP_EVENT; + +extern const char *irlmp_state[]; +extern const char *irlsap_state[]; + +void irlmp_watchdog_timer_expired(void *data); +void irlmp_discovery_timer_expired(void *data); +void irlmp_idle_timer_expired(void *data); + +void irlmp_do_lap_event(struct lap_cb *self, IRLMP_EVENT event, + struct sk_buff *skb); +int irlmp_do_lsap_event(struct lsap_cb *self, IRLMP_EVENT event, + struct sk_buff *skb); + +#endif /* IRLMP_EVENT_H */ + + + + diff --git a/include/net/irda/irlmp_frame.h b/include/net/irda/irlmp_frame.h new file mode 100644 index 000000000000..eb3ad158c023 --- /dev/null +++ b/include/net/irda/irlmp_frame.h @@ -0,0 +1,63 @@ +/********************************************************************* + * + * Filename: irlmp_frame.h + * Version: 0.9 + * Description: + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Tue Aug 19 02:09:59 1997 + * Modified at: Fri Dec 10 13:21:53 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1997, 1999 Dag Brattli <dagb@cs.uit.no>, + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * Neither Dag Brattli nor University of Troms admit liability nor + * provide warranty for any of this software. This material is + * provided "AS-IS" and at no charge. + * + ********************************************************************/ + +#ifndef IRMLP_FRAME_H +#define IRMLP_FRAME_H + +#include <linux/config.h> +#include <linux/skbuff.h> + +#include <net/irda/discovery.h> + +/* IrLMP frame opcodes */ +#define CONNECT_CMD 0x01 +#define CONNECT_CNF 0x81 +#define DISCONNECT 0x02 +#define ACCESSMODE_CMD 0x03 +#define ACCESSMODE_CNF 0x83 + +#define CONTROL_BIT 0x80 + +void irlmp_send_data_pdu(struct lap_cb *self, __u8 dlsap, __u8 slsap, + int expedited, struct sk_buff *skb); +void irlmp_send_lcf_pdu(struct lap_cb *self, __u8 dlsap, __u8 slsap, + __u8 opcode, struct sk_buff *skb); +void irlmp_link_data_indication(struct lap_cb *, struct sk_buff *, + int unreliable); +#ifdef CONFIG_IRDA_ULTRA +void irlmp_link_unitdata_indication(struct lap_cb *, struct sk_buff *); +#endif /* CONFIG_IRDA_ULTRA */ + +void irlmp_link_connect_indication(struct lap_cb *, __u32 saddr, __u32 daddr, + struct qos_info *qos, struct sk_buff *skb); +void irlmp_link_connect_request(__u32 daddr); +void irlmp_link_connect_confirm(struct lap_cb *self, struct qos_info *qos, + struct sk_buff *skb); +void irlmp_link_disconnect_indication(struct lap_cb *, struct irlap_cb *, + LAP_REASON reason, struct sk_buff *); +void irlmp_link_discovery_confirm(struct lap_cb *self, hashbin_t *log); +void irlmp_link_discovery_indication(struct lap_cb *, discovery_t *discovery); + +#endif diff --git a/include/net/irda/irmod.h b/include/net/irda/irmod.h new file mode 100644 index 000000000000..72b446c1e22c --- /dev/null +++ b/include/net/irda/irmod.h @@ -0,0 +1,109 @@ +/********************************************************************* + * + * Filename: irmod.h + * Version: 0.3 + * Description: IrDA module and utilities functions + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Mon Dec 15 13:58:52 1997 + * Modified at: Fri Jan 28 13:15:24 2000 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1998-2000 Dag Brattli, All Rights Reserved. + * Copyright (c) 2000-2002 Jean Tourrilhes <jt@hpl.hp.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * Neither Dag Brattli nor University of Troms admit liability nor + * provide warranty for any of this software. This material is + * provided "AS-IS" and at no charg. + * + ********************************************************************/ + +#ifndef IRMOD_H +#define IRMOD_H + +/* Misc status information */ +typedef enum { + STATUS_OK, + STATUS_ABORTED, + STATUS_NO_ACTIVITY, + STATUS_NOISY, + STATUS_REMOTE, +} LINK_STATUS; + +typedef enum { + LOCK_NO_CHANGE, + LOCK_LOCKED, + LOCK_UNLOCKED, +} LOCK_STATUS; + +typedef enum { FLOW_STOP, FLOW_START } LOCAL_FLOW; + +/* + * IrLMP disconnect reasons. The order is very important, since they + * correspond to disconnect reasons sent in IrLMP disconnect frames, so + * please do not touch :-) + */ +typedef enum { + LM_USER_REQUEST = 1, /* User request */ + LM_LAP_DISCONNECT, /* Unexpected IrLAP disconnect */ + LM_CONNECT_FAILURE, /* Failed to establish IrLAP connection */ + LM_LAP_RESET, /* IrLAP reset */ + LM_INIT_DISCONNECT, /* Link Management initiated disconnect */ + LM_LSAP_NOTCONN, /* Data delivered on unconnected LSAP */ + LM_NON_RESP_CLIENT, /* Non responsive LM-MUX client */ + LM_NO_AVAIL_CLIENT, /* No available LM-MUX client */ + LM_CONN_HALF_OPEN, /* Connection is half open */ + LM_BAD_SOURCE_ADDR, /* Illegal source address (i.e 0x00) */ +} LM_REASON; +#define LM_UNKNOWN 0xff /* Unspecified disconnect reason */ + +/* A few forward declarations (to make compiler happy) */ +struct qos_info; /* in <net/irda/qos.h> */ + +/* + * Notify structure used between transport and link management layers + */ +typedef struct { + int (*data_indication)(void *priv, void *sap, struct sk_buff *skb); + int (*udata_indication)(void *priv, void *sap, struct sk_buff *skb); + void (*connect_confirm)(void *instance, void *sap, + struct qos_info *qos, __u32 max_sdu_size, + __u8 max_header_size, struct sk_buff *skb); + void (*connect_indication)(void *instance, void *sap, + struct qos_info *qos, __u32 max_sdu_size, + __u8 max_header_size, struct sk_buff *skb); + void (*disconnect_indication)(void *instance, void *sap, + LM_REASON reason, struct sk_buff *); + void (*flow_indication)(void *instance, void *sap, LOCAL_FLOW flow); + void (*status_indication)(void *instance, + LINK_STATUS link, LOCK_STATUS lock); + void *instance; /* Layer instance pointer */ + char name[16]; /* Name of layer */ +} notify_t; + +#define NOTIFY_MAX_NAME 16 + +/* Zero the notify structure */ +void irda_notify_init(notify_t *notify); + +/* Locking wrapper - Note the inverted logic on irda_lock(). + * Those function basically return false if the lock is already in the + * position you want to set it. - Jean II */ +#define irda_lock(lock) (! test_and_set_bit(0, (void *) (lock))) +#define irda_unlock(lock) (test_and_clear_bit(0, (void *) (lock))) + +#endif /* IRMOD_H */ + + + + + + + + + diff --git a/include/net/irda/irqueue.h b/include/net/irda/irqueue.h new file mode 100644 index 000000000000..335b0ace9665 --- /dev/null +++ b/include/net/irda/irqueue.h @@ -0,0 +1,96 @@ +/********************************************************************* + * + * Filename: irqueue.h + * Version: 0.3 + * Description: General queue implementation + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Tue Jun 9 13:26:50 1998 + * Modified at: Thu Oct 7 13:25:16 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (C) 1998-1999, Aage Kvalnes <aage@cs.uit.no> + * Copyright (c) 1998, Dag Brattli + * All Rights Reserved. + * + * This code is taken from the Vortex Operating System written by Aage + * Kvalnes and has been ported to Linux and Linux/IR by Dag Brattli + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * Neither Dag Brattli nor University of Troms admit liability nor + * provide warranty for any of this software. This material is + * provided "AS-IS" and at no charge. + * + ********************************************************************/ + +#include <linux/types.h> +#include <linux/spinlock.h> + +#ifndef IRDA_QUEUE_H +#define IRDA_QUEUE_H + +#define NAME_SIZE 32 + +/* + * Hash types (some flags can be xored) + * See comments in irqueue.c for which one to use... + */ +#define HB_NOLOCK 0 /* No concurent access prevention */ +#define HB_LOCK 1 /* Prevent concurent write with global lock */ + +/* + * Hash defines + */ +#define HASHBIN_SIZE 8 +#define HASHBIN_MASK 0x7 + +#ifndef IRDA_ALIGN +#define IRDA_ALIGN __attribute__((aligned)) +#endif + +#define Q_NULL { NULL, NULL, "", 0 } + +typedef void (*FREE_FUNC)(void *arg); + +struct irda_queue { + struct irda_queue *q_next; + struct irda_queue *q_prev; + + char q_name[NAME_SIZE]; + long q_hash; /* Must be able to cast a (void *) */ +}; +typedef struct irda_queue irda_queue_t; + +typedef struct hashbin_t { + __u32 magic; + int hb_type; + int hb_size; + spinlock_t hb_spinlock; /* HB_LOCK - Can be used by the user */ + + irda_queue_t* hb_queue[HASHBIN_SIZE] IRDA_ALIGN; + + irda_queue_t* hb_current; +} hashbin_t; + +hashbin_t *hashbin_new(int type); +int hashbin_delete(hashbin_t* hashbin, FREE_FUNC func); +int hashbin_clear(hashbin_t* hashbin, FREE_FUNC free_func); +void hashbin_insert(hashbin_t* hashbin, irda_queue_t* entry, long hashv, + const char* name); +void* hashbin_remove(hashbin_t* hashbin, long hashv, const char* name); +void* hashbin_remove_first(hashbin_t *hashbin); +void* hashbin_remove_this( hashbin_t* hashbin, irda_queue_t* entry); +void* hashbin_find(hashbin_t* hashbin, long hashv, const char* name); +void* hashbin_lock_find(hashbin_t* hashbin, long hashv, const char* name); +void* hashbin_find_next(hashbin_t* hashbin, long hashv, const char* name, + void ** pnext); +irda_queue_t *hashbin_get_first(hashbin_t *hashbin); +irda_queue_t *hashbin_get_next(hashbin_t *hashbin); + +#define HASHBIN_GET_SIZE(hashbin) hashbin->hb_size + +#endif diff --git a/include/net/irda/irttp.h b/include/net/irda/irttp.h new file mode 100644 index 000000000000..a899e5837be8 --- /dev/null +++ b/include/net/irda/irttp.h @@ -0,0 +1,210 @@ +/********************************************************************* + * + * Filename: irttp.h + * Version: 1.0 + * Description: Tiny Transport Protocol (TTP) definitions + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Sun Aug 31 20:14:31 1997 + * Modified at: Sun Dec 12 13:09:07 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1998-1999 Dag Brattli <dagb@cs.uit.no>, + * All Rights Reserved. + * Copyright (c) 2000-2002 Jean Tourrilhes <jt@hpl.hp.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * Neither Dag Brattli nor University of Troms admit liability nor + * provide warranty for any of this software. This material is + * provided "AS-IS" and at no charge. + * + ********************************************************************/ + +#ifndef IRTTP_H +#define IRTTP_H + +#include <linux/types.h> +#include <linux/skbuff.h> +#include <linux/spinlock.h> + +#include <net/irda/irda.h> +#include <net/irda/irlmp.h> /* struct lsap_cb */ +#include <net/irda/qos.h> /* struct qos_info */ +#include <net/irda/irqueue.h> + +#define TTP_MAX_CONNECTIONS LM_MAX_CONNECTIONS +#define TTP_HEADER 1 +#define TTP_MAX_HEADER (TTP_HEADER + LMP_MAX_HEADER) +#define TTP_SAR_HEADER 5 +#define TTP_PARAMETERS 0x80 +#define TTP_MORE 0x80 + +/* Transmission queue sizes */ +/* Worst case scenario, two window of data - Jean II */ +#define TTP_TX_MAX_QUEUE 14 +/* We need to keep at least 5 frames to make sure that we can refill + * appropriately the LAP layer. LAP keeps only two buffers, and we need + * to have 7 to make a full window - Jean II */ +#define TTP_TX_LOW_THRESHOLD 5 +/* Most clients are synchronous with respect to flow control, so we can + * keep a low number of Tx buffers in TTP - Jean II */ +#define TTP_TX_HIGH_THRESHOLD 7 + +/* Receive queue sizes */ +/* Minimum of credit that the peer should hold. + * If the peer has less credits than 9 frames, we will explicitely send + * him some credits (through irttp_give_credit() and a specific frame). + * Note that when we give credits it's likely that it won't be sent in + * this LAP window, but in the next one. So, we make sure that the peer + * has something to send while waiting for credits (one LAP window == 7 + * + 1 frames while he process the credits). - Jean II */ +#define TTP_RX_MIN_CREDIT 8 +/* This is the default maximum number of credits held by the peer, so the + * default maximum number of frames he can send us before needing flow + * control answer from us (this may be negociated differently at TSAP setup). + * We want to minimise the number of times we have to explicitely send some + * credit to the peer, hoping we can piggyback it on the return data. In + * particular, it doesn't make sense for us to send credit more than once + * per LAP window. + * Moreover, giving credits has some latency, so we need strictly more than + * a LAP window, otherwise we may already have credits in our Tx queue. + * But on the other hand, we don't want to keep too many Rx buffer here + * before starting to flow control the other end, so make it exactly one + * LAP window + 1 + MIN_CREDITS. - Jean II */ +#define TTP_RX_DEFAULT_CREDIT 16 +/* Maximum number of credits we can allow the peer to have, and therefore + * maximum Rx queue size. + * Note that we try to deliver packets to the higher layer every time we + * receive something, so in normal mode the Rx queue will never contains + * more than one or two packets. - Jean II */ +#define TTP_RX_MAX_CREDIT 21 + +/* What clients should use when calling ttp_open_tsap() */ +#define DEFAULT_INITIAL_CREDIT TTP_RX_DEFAULT_CREDIT + +/* Some priorities for disconnect requests */ +#define P_NORMAL 0 +#define P_HIGH 1 + +#define TTP_SAR_DISABLE 0 +#define TTP_SAR_UNBOUND 0xffffffff + +/* Parameters */ +#define TTP_MAX_SDU_SIZE 0x01 + +/* + * This structure contains all data assosiated with one instance of a TTP + * connection. + */ +struct tsap_cb { + irda_queue_t q; /* Must be first */ + magic_t magic; /* Just in case */ + + __u8 stsap_sel; /* Source TSAP */ + __u8 dtsap_sel; /* Destination TSAP */ + + struct lsap_cb *lsap; /* Corresponding LSAP to this TSAP */ + + __u8 connected; /* TSAP connected */ + + __u8 initial_credit; /* Initial credit to give peer */ + + int avail_credit; /* Available credit to return to peer */ + int remote_credit; /* Credit held by peer TTP entity */ + int send_credit; /* Credit held by local TTP entity */ + + struct sk_buff_head tx_queue; /* Frames to be transmitted */ + struct sk_buff_head rx_queue; /* Received frames */ + struct sk_buff_head rx_fragments; + int tx_queue_lock; + int rx_queue_lock; + spinlock_t lock; + + notify_t notify; /* Callbacks to client layer */ + + struct net_device_stats stats; + struct timer_list todo_timer; + + __u32 max_seg_size; /* Max data that fit into an IrLAP frame */ + __u8 max_header_size; + + int rx_sdu_busy; /* RxSdu.busy */ + __u32 rx_sdu_size; /* Current size of a partially received frame */ + __u32 rx_max_sdu_size; /* Max receive user data size */ + + int tx_sdu_busy; /* TxSdu.busy */ + __u32 tx_max_sdu_size; /* Max transmit user data size */ + + int close_pend; /* Close, but disconnect_pend */ + unsigned long disconnect_pend; /* Disconnect, but still data to send */ + struct sk_buff *disconnect_skb; +}; + +struct irttp_cb { + magic_t magic; + hashbin_t *tsaps; +}; + +int irttp_init(void); +void irttp_cleanup(void); + +struct tsap_cb *irttp_open_tsap(__u8 stsap_sel, int credit, notify_t *notify); +int irttp_close_tsap(struct tsap_cb *self); + +int irttp_data_request(struct tsap_cb *self, struct sk_buff *skb); +int irttp_udata_request(struct tsap_cb *self, struct sk_buff *skb); + +int irttp_connect_request(struct tsap_cb *self, __u8 dtsap_sel, + __u32 saddr, __u32 daddr, + struct qos_info *qos, __u32 max_sdu_size, + struct sk_buff *userdata); +int irttp_connect_response(struct tsap_cb *self, __u32 max_sdu_size, + struct sk_buff *userdata); +int irttp_disconnect_request(struct tsap_cb *self, struct sk_buff *skb, + int priority); +void irttp_flow_request(struct tsap_cb *self, LOCAL_FLOW flow); +struct tsap_cb *irttp_dup(struct tsap_cb *self, void *instance); + +static __inline __u32 irttp_get_saddr(struct tsap_cb *self) +{ + return irlmp_get_saddr(self->lsap); +} + +static __inline __u32 irttp_get_daddr(struct tsap_cb *self) +{ + return irlmp_get_daddr(self->lsap); +} + +static __inline __u32 irttp_get_max_seg_size(struct tsap_cb *self) +{ + return self->max_seg_size; +} + +/* After doing a irttp_dup(), this get one of the two socket back into + * a state where it's waiting incomming connections. + * Note : this can be used *only* if the socket is not yet connected + * (i.e. NO irttp_connect_response() done on this socket). + * - Jean II */ +static inline void irttp_listen(struct tsap_cb *self) +{ + irlmp_listen(self->lsap); + self->dtsap_sel = LSAP_ANY; +} + +/* Return TRUE if the node is in primary mode (i.e. master) + * - Jean II */ +static inline int irttp_is_primary(struct tsap_cb *self) +{ + if ((self == NULL) || + (self->lsap == NULL) || + (self->lsap->lap == NULL) || + (self->lsap->lap->irlap == NULL)) + return -2; + return(irlap_is_primary(self->lsap->lap->irlap)); +} + +#endif /* IRTTP_H */ diff --git a/include/net/irda/parameters.h b/include/net/irda/parameters.h new file mode 100644 index 000000000000..3a605d37ddbf --- /dev/null +++ b/include/net/irda/parameters.h @@ -0,0 +1,102 @@ +/********************************************************************* + * + * Filename: parameters.h + * Version: 1.0 + * Description: A more general way to handle (pi,pl,pv) parameters + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Mon Jun 7 08:47:28 1999 + * Modified at: Sun Jan 30 14:05:14 2000 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1999-2000 Dag Brattli, All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + * Michel Dnzer <daenzer@debian.org>, 10/2001 + * - simplify irda_pv_t to avoid endianness issues + * + ********************************************************************/ + +#ifndef IRDA_PARAMS_H +#define IRDA_PARAMS_H + +/* + * The currently supported types. Beware not to change the sequence since + * it a good reason why the sized integers has a value equal to their size + */ +typedef enum { + PV_INTEGER, /* Integer of any (pl) length */ + PV_INT_8_BITS, /* Integer of 8 bits in length */ + PV_INT_16_BITS, /* Integer of 16 bits in length */ + PV_STRING, /* \0 terminated string */ + PV_INT_32_BITS, /* Integer of 32 bits in length */ + PV_OCT_SEQ, /* Octet sequence */ + PV_NO_VALUE /* Does not contain any value (pl=0) */ +} PV_TYPE; + +/* Bit 7 of type field */ +#define PV_BIG_ENDIAN 0x80 +#define PV_LITTLE_ENDIAN 0x00 +#define PV_MASK 0x7f /* To mask away endian bit */ + +#define PV_PUT 0 +#define PV_GET 1 + +typedef union { + char *c; + __u32 i; + __u32 *ip; +} irda_pv_t; + +typedef struct { + __u8 pi; + __u8 pl; + irda_pv_t pv; +} irda_param_t; + +typedef int (*PI_HANDLER)(void *self, irda_param_t *param, int get); +typedef int (*PV_HANDLER)(void *self, __u8 *buf, int len, __u8 pi, + PV_TYPE type, PI_HANDLER func); + +typedef struct { + PI_HANDLER func; /* Handler for this parameter identifier */ + PV_TYPE type; /* Data type for this parameter */ +} pi_minor_info_t; + +typedef struct { + pi_minor_info_t *pi_minor_call_table; + int len; +} pi_major_info_t; + +typedef struct { + pi_major_info_t *tables; + int len; + __u8 pi_mask; + int pi_major_offset; +} pi_param_info_t; + +int irda_param_pack(__u8 *buf, char *fmt, ...); + +int irda_param_insert(void *self, __u8 pi, __u8 *buf, int len, + pi_param_info_t *info); +int irda_param_extract_all(void *self, __u8 *buf, int len, + pi_param_info_t *info); + +#define irda_param_insert_byte(buf,pi,pv) irda_param_pack(buf,"bbb",pi,1,pv) + +#endif /* IRDA_PARAMS_H */ + diff --git a/include/net/irda/qos.h b/include/net/irda/qos.h new file mode 100644 index 000000000000..9ae3d6bc2423 --- /dev/null +++ b/include/net/irda/qos.h @@ -0,0 +1,104 @@ +/********************************************************************* + * + * Filename: qos.h + * Version: 1.0 + * Description: Quality of Service definitions + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Fri Sep 19 23:21:09 1997 + * Modified at: Thu Dec 2 13:51:54 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1999 Dag Brattli, All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + ********************************************************************/ + +#ifndef IRDA_QOS_H +#define IRDA_QOS_H + +#include <linux/config.h> +#include <linux/skbuff.h> + +#include <net/irda/parameters.h> + +#define PI_BAUD_RATE 0x01 +#define PI_MAX_TURN_TIME 0x82 +#define PI_DATA_SIZE 0x83 +#define PI_WINDOW_SIZE 0x84 +#define PI_ADD_BOFS 0x85 +#define PI_MIN_TURN_TIME 0x86 +#define PI_LINK_DISC 0x08 + +#define IR_115200_MAX 0x3f + +/* Baud rates (first byte) */ +#define IR_2400 0x01 +#define IR_9600 0x02 +#define IR_19200 0x04 +#define IR_38400 0x08 +#define IR_57600 0x10 +#define IR_115200 0x20 +#define IR_576000 0x40 +#define IR_1152000 0x80 + +/* Baud rates (second byte) */ +#define IR_4000000 0x01 +#define IR_16000000 0x02 + +/* Quality of Service information */ +typedef struct { + __u32 value; + __u16 bits; /* LSB is first byte, MSB is second byte */ +} qos_value_t; + +struct qos_info { + magic_t magic; + + qos_value_t baud_rate; /* IR_11520O | ... */ + qos_value_t max_turn_time; + qos_value_t data_size; + qos_value_t window_size; + qos_value_t additional_bofs; + qos_value_t min_turn_time; + qos_value_t link_disc_time; + + qos_value_t power; +}; + +extern int sysctl_max_baud_rate; +extern int sysctl_max_inactive_time; + +void irda_init_max_qos_capabilies(struct qos_info *qos); +void irda_qos_compute_intersection(struct qos_info *, struct qos_info *); + +__u32 irlap_max_line_capacity(__u32 speed, __u32 max_turn_time); + +void irda_qos_bits_to_value(struct qos_info *qos); + +/* So simple, how could we not inline those two ? + * Note : one byte is 10 bits if you include start and stop bits + * Jean II */ +#define irlap_min_turn_time_in_bytes(speed, min_turn_time) ( \ + speed * min_turn_time / 10000000 \ +) +#define irlap_xbofs_in_usec(speed, xbofs) ( \ + xbofs * 10000000 / speed \ +) + +#endif + diff --git a/include/net/irda/timer.h b/include/net/irda/timer.h new file mode 100644 index 000000000000..2c5d8864ab77 --- /dev/null +++ b/include/net/irda/timer.h @@ -0,0 +1,104 @@ +/********************************************************************* + * + * Filename: timer.h + * Version: + * Description: + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Sat Aug 16 00:59:29 1997 + * Modified at: Thu Oct 7 12:25:24 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1997, 1998-1999 Dag Brattli <dagb@cs.uit.no>, + * All Rights Reserved. + * Copyright (c) 2000-2002 Jean Tourrilhes <jt@hpl.hp.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * Neither Dag Brattli nor University of Troms admit liability nor + * provide warranty for any of this software. This material is + * provided "AS-IS" and at no charge. + * + ********************************************************************/ + +#ifndef TIMER_H +#define TIMER_H + +#include <linux/timer.h> + +#include <asm/param.h> /* for HZ */ + +#include <net/irda/irda.h> + +/* A few forward declarations (to make compiler happy) */ +struct irlmp_cb; +struct irlap_cb; +struct lsap_cb; +struct lap_cb; + +/* + * Timeout definitions, some defined in IrLAP 6.13.5 - p. 92 + */ +#define POLL_TIMEOUT (450*HZ/1000) /* Must never exceed 500 ms */ +#define FINAL_TIMEOUT (500*HZ/1000) /* Must never exceed 500 ms */ + +/* + * Normally twice of p-timer. Note 3, IrLAP 6.3.11.2 - p. 60 suggests + * at least twice duration of the P-timer. + */ +#define WD_TIMEOUT (POLL_TIMEOUT*2) + +#define MEDIABUSY_TIMEOUT (500*HZ/1000) /* 500 msec */ +#define SMALLBUSY_TIMEOUT (100*HZ/1000) /* 100 msec - IrLAP 6.13.4 */ + +/* + * Slot timer must never exceed 85 ms, and must always be at least 25 ms, + * suggested to 75-85 msec by IrDA lite. This doesn't work with a lot of + * devices, and other stackes uses a lot more, so it's best we do it as well + * (Note : this is the default value and sysctl overides it - Jean II) + */ +#define SLOT_TIMEOUT (90*HZ/1000) + +/* + * The latest discovery frame (XID) is longer due to the extra discovery + * information (hints, device name...). This is its extra length. + * We use that when setting the query timeout. Jean II + */ +#define XIDEXTRA_TIMEOUT (34*HZ/1000) /* 34 msec */ + +#define WATCHDOG_TIMEOUT (20*HZ) /* 20 sec */ + +typedef void (*TIMER_CALLBACK)(void *); + +static inline void irda_start_timer(struct timer_list *ptimer, int timeout, + void* data, TIMER_CALLBACK callback) +{ + ptimer->function = (void (*)(unsigned long)) callback; + ptimer->data = (unsigned long) data; + + /* Set new value for timer (update or add timer). + * We use mod_timer() because it's more efficient and also + * safer with respect to race conditions - Jean II */ + mod_timer(ptimer, jiffies + timeout); +} + + +void irlap_start_slot_timer(struct irlap_cb *self, int timeout); +void irlap_start_query_timer(struct irlap_cb *self, int S, int s); +void irlap_start_final_timer(struct irlap_cb *self, int timeout); +void irlap_start_wd_timer(struct irlap_cb *self, int timeout); +void irlap_start_backoff_timer(struct irlap_cb *self, int timeout); + +void irlap_start_mbusy_timer(struct irlap_cb *self, int timeout); +void irlap_stop_mbusy_timer(struct irlap_cb *); + +void irlmp_start_watchdog_timer(struct lsap_cb *, int timeout); +void irlmp_start_discovery_timer(struct irlmp_cb *, int timeout); +void irlmp_start_idle_timer(struct lap_cb *, int timeout); +void irlmp_stop_idle_timer(struct lap_cb *self); + +#endif + diff --git a/include/net/irda/wrapper.h b/include/net/irda/wrapper.h new file mode 100644 index 000000000000..98768b3f9e31 --- /dev/null +++ b/include/net/irda/wrapper.h @@ -0,0 +1,58 @@ +/********************************************************************* + * + * Filename: wrapper.h + * Version: 1.2 + * Description: IrDA SIR async wrapper layer + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Mon Aug 4 20:40:53 1997 + * Modified at: Tue Jan 11 12:37:29 2000 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1998-2000 Dag Brattli <dagb@cs.uit.no>, + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * Neither Dag Brattli nor University of Troms admit liability nor + * provide warranty for any of this software. This material is + * provided "AS-IS" and at no charge. + * + ********************************************************************/ + +#ifndef WRAPPER_H +#define WRAPPER_H + +#include <linux/types.h> +#include <linux/skbuff.h> +#include <linux/netdevice.h> + +#include <net/irda/irda_device.h> /* iobuff_t */ + +#define BOF 0xc0 /* Beginning of frame */ +#define XBOF 0xff +#define EOF 0xc1 /* End of frame */ +#define CE 0x7d /* Control escape */ + +#define STA BOF /* Start flag */ +#define STO EOF /* End flag */ + +#define IRDA_TRANS 0x20 /* Asynchronous transparency modifier */ + +/* States for receving a frame in async mode */ +enum { + OUTSIDE_FRAME, + BEGIN_FRAME, + LINK_ESCAPE, + INSIDE_FRAME +}; + +/* Proto definitions */ +int async_wrap_skb(struct sk_buff *skb, __u8 *tx_buff, int buffsize); +void async_unwrap_char(struct net_device *dev, struct net_device_stats *stats, + iobuff_t *buf, __u8 byte); + +#endif diff --git a/include/net/iw_handler.h b/include/net/iw_handler.h new file mode 100644 index 000000000000..44edd48f1234 --- /dev/null +++ b/include/net/iw_handler.h @@ -0,0 +1,540 @@ +/* + * This file define the new driver API for Wireless Extensions + * + * Version : 6 21.6.04 + * + * Authors : Jean Tourrilhes - HPL - <jt@hpl.hp.com> + * Copyright (c) 2001-2004 Jean Tourrilhes, All Rights Reserved. + */ + +#ifndef _IW_HANDLER_H +#define _IW_HANDLER_H + +/************************** DOCUMENTATION **************************/ +/* + * Initial driver API (1996 -> onward) : + * ----------------------------------- + * The initial API just sends the IOCTL request received from user space + * to the driver (via the driver ioctl handler). The driver has to + * handle all the rest... + * + * The initial API also defines a specific handler in struct net_device + * to handle wireless statistics. + * + * The initial APIs served us well and has proven a reasonably good design. + * However, there is a few shortcommings : + * o No events, everything is a request to the driver. + * o Large ioctl function in driver with gigantic switch statement + * (i.e. spaghetti code). + * o Driver has to mess up with copy_to/from_user, and in many cases + * does it unproperly. Common mistakes are : + * * buffer overflows (no checks or off by one checks) + * * call copy_to/from_user with irq disabled + * o The user space interface is tied to ioctl because of the use + * copy_to/from_user. + * + * New driver API (2002 -> onward) : + * ------------------------------- + * The new driver API is just a bunch of standard functions (handlers), + * each handling a specific Wireless Extension. The driver just export + * the list of handler it supports, and those will be called apropriately. + * + * I tried to keep the main advantage of the previous API (simplicity, + * efficiency and light weight), and also I provide a good dose of backward + * compatibility (most structures are the same, driver can use both API + * simultaneously, ...). + * Hopefully, I've also addressed the shortcomming of the initial API. + * + * The advantage of the new API are : + * o Handling of Extensions in driver broken in small contained functions + * o Tighter checks of ioctl before calling the driver + * o Flexible commit strategy (at least, the start of it) + * o Backward compatibility (can be mixed with old API) + * o Driver doesn't have to worry about memory and user-space issues + * The last point is important for the following reasons : + * o You are now able to call the new driver API from any API you + * want (including from within other parts of the kernel). + * o Common mistakes are avoided (buffer overflow, user space copy + * with irq disabled and so on). + * + * The Drawback of the new API are : + * o bloat (especially kernel) + * o need to migrate existing drivers to new API + * My initial testing shows that the new API adds around 3kB to the kernel + * and save between 0 and 5kB from a typical driver. + * Also, as all structures and data types are unchanged, the migration is + * quite straightforward (but tedious). + * + * --- + * + * The new driver API is defined below in this file. User space should + * not be aware of what's happening down there... + * + * A new kernel wrapper is in charge of validating the IOCTLs and calling + * the appropriate driver handler. This is implemented in : + * # net/core/wireless.c + * + * The driver export the list of handlers in : + * # include/linux/netdevice.h (one place) + * + * The new driver API is available for WIRELESS_EXT >= 13. + * Good luck with migration to the new API ;-) + */ + +/* ---------------------- THE IMPLEMENTATION ---------------------- */ +/* + * Some of the choice I've made are pretty controversials. Defining an + * API is very much weighting compromises. This goes into some of the + * details and the thinking behind the implementation. + * + * Implementation goals : + * -------------------- + * The implementation goals were as follow : + * o Obvious : you should not need a PhD to understand what's happening, + * the benefit is easier maintainance. + * o Flexible : it should accommodate a wide variety of driver + * implementations and be as flexible as the old API. + * o Lean : it should be efficient memory wise to minimise the impact + * on kernel footprint. + * o Transparent to user space : the large number of user space + * applications that use Wireless Extensions should not need + * any modifications. + * + * Array of functions versus Struct of functions + * --------------------------------------------- + * 1) Having an array of functions allow the kernel code to access the + * handler in a single lookup, which is much more efficient (think hash + * table here). + * 2) The only drawback is that driver writer may put their handler in + * the wrong slot. This is trivial to test (I set the frequency, the + * bitrate changes). Once the handler is in the proper slot, it will be + * there forever, because the array is only extended at the end. + * 3) Backward/forward compatibility : adding new handler just require + * extending the array, so you can put newer driver in older kernel + * without having to patch the kernel code (and vice versa). + * + * All handler are of the same generic type + * ---------------------------------------- + * That's a feature !!! + * 1) Having a generic handler allow to have generic code, which is more + * efficient. If each of the handler was individually typed I would need + * to add a big switch in the kernel (== more bloat). This solution is + * more scalable, adding new Wireless Extensions doesn't add new code. + * 2) You can use the same handler in different slots of the array. For + * hardware, it may be more efficient or logical to handle multiple + * Wireless Extensions with a single function, and the API allow you to + * do that. (An example would be a single record on the card to control + * both bitrate and frequency, the handler would read the old record, + * modify it according to info->cmd and rewrite it). + * + * Functions prototype uses union iwreq_data + * ----------------------------------------- + * Some would have prefered functions defined this way : + * static int mydriver_ioctl_setrate(struct net_device *dev, + * long rate, int auto) + * 1) The kernel code doesn't "validate" the content of iwreq_data, and + * can't do it (different hardware may have different notion of what a + * valid frequency is), so we don't pretend that we do it. + * 2) The above form is not extendable. If I want to add a flag (for + * example to distinguish setting max rate and basic rate), I would + * break the prototype. Using iwreq_data is more flexible. + * 3) Also, the above form is not generic (see above). + * 4) I don't expect driver developper using the wrong field of the + * union (Doh !), so static typechecking doesn't add much value. + * 5) Lastly, you can skip the union by doing : + * static int mydriver_ioctl_setrate(struct net_device *dev, + * struct iw_request_info *info, + * struct iw_param *rrq, + * char *extra) + * And then adding the handler in the array like this : + * (iw_handler) mydriver_ioctl_setrate, // SIOCSIWRATE + * + * Using functions and not a registry + * ---------------------------------- + * Another implementation option would have been for every instance to + * define a registry (a struct containing all the Wireless Extensions) + * and only have a function to commit the registry to the hardware. + * 1) This approach can be emulated by the current code, but not + * vice versa. + * 2) Some drivers don't keep any configuration in the driver, for them + * adding such a registry would be a significant bloat. + * 3) The code to translate from Wireless Extension to native format is + * needed anyway, so it would not reduce significantely the amount of code. + * 4) The current approach only selectively translate Wireless Extensions + * to native format and only selectively set, whereas the registry approach + * would require to translate all WE and set all parameters for any single + * change. + * 5) For many Wireless Extensions, the GET operation return the current + * dynamic value, not the value that was set. + * + * This header is <net/iw_handler.h> + * --------------------------------- + * 1) This header is kernel space only and should not be exported to + * user space. Headers in "include/linux/" are exported, headers in + * "include/net/" are not. + * + * Mixed 32/64 bit issues + * ---------------------- + * The Wireless Extensions are designed to be 64 bit clean, by using only + * datatypes with explicit storage size. + * There are some issues related to kernel and user space using different + * memory model, and in particular 64bit kernel with 32bit user space. + * The problem is related to struct iw_point, that contains a pointer + * that *may* need to be translated. + * This is quite messy. The new API doesn't solve this problem (it can't), + * but is a step in the right direction : + * 1) Meta data about each ioctl is easily available, so we know what type + * of translation is needed. + * 2) The move of data between kernel and user space is only done in a single + * place in the kernel, so adding specific hooks in there is possible. + * 3) In the long term, it allows to move away from using ioctl as the + * user space API. + * + * So many comments and so few code + * -------------------------------- + * That's a feature. Comments won't bloat the resulting kernel binary. + */ + +/***************************** INCLUDES *****************************/ + +#include <linux/wireless.h> /* IOCTL user space API */ +#include <linux/if_ether.h> + +/***************************** VERSION *****************************/ +/* + * This constant is used to know which version of the driver API is + * available. Hopefully, this will be pretty stable and no changes + * will be needed... + * I just plan to increment with each new version. + */ +#define IW_HANDLER_VERSION 6 + +/* + * Changes : + * + * V2 to V3 + * -------- + * - Move event definition in <linux/wireless.h> + * - Add Wireless Event support : + * o wireless_send_event() prototype + * o iwe_stream_add_event/point() inline functions + * V3 to V4 + * -------- + * - Reshuffle IW_HEADER_TYPE_XXX to map IW_PRIV_TYPE_XXX changes + * + * V4 to V5 + * -------- + * - Add new spy support : struct iw_spy_data & prototypes + * + * V5 to V6 + * -------- + * - Change the way we get to spy_data method for added safety + * - Remove spy #ifdef, they are always on -> cleaner code + * - Add IW_DESCR_FLAG_NOMAX flag for very large requests + * - Start migrating get_wireless_stats to struct iw_handler_def + */ + +/**************************** CONSTANTS ****************************/ + +/* Enhanced spy support available */ +#define IW_WIRELESS_SPY +#define IW_WIRELESS_THRSPY + +/* Special error message for the driver to indicate that we + * should do a commit after return from the iw_handler */ +#define EIWCOMMIT EINPROGRESS + +/* Flags available in struct iw_request_info */ +#define IW_REQUEST_FLAG_NONE 0x0000 /* No flag so far */ + +/* Type of headers we know about (basically union iwreq_data) */ +#define IW_HEADER_TYPE_NULL 0 /* Not available */ +#define IW_HEADER_TYPE_CHAR 2 /* char [IFNAMSIZ] */ +#define IW_HEADER_TYPE_UINT 4 /* __u32 */ +#define IW_HEADER_TYPE_FREQ 5 /* struct iw_freq */ +#define IW_HEADER_TYPE_ADDR 6 /* struct sockaddr */ +#define IW_HEADER_TYPE_POINT 8 /* struct iw_point */ +#define IW_HEADER_TYPE_PARAM 9 /* struct iw_param */ +#define IW_HEADER_TYPE_QUAL 10 /* struct iw_quality */ + +/* Handling flags */ +/* Most are not implemented. I just use them as a reminder of some + * cool features we might need one day ;-) */ +#define IW_DESCR_FLAG_NONE 0x0000 /* Obvious */ +/* Wrapper level flags */ +#define IW_DESCR_FLAG_DUMP 0x0001 /* Not part of the dump command */ +#define IW_DESCR_FLAG_EVENT 0x0002 /* Generate an event on SET */ +#define IW_DESCR_FLAG_RESTRICT 0x0004 /* GET : request is ROOT only */ + /* SET : Omit payload from generated iwevent */ +#define IW_DESCR_FLAG_NOMAX 0x0008 /* GET : no limit on request size */ +/* Driver level flags */ +#define IW_DESCR_FLAG_WAIT 0x0100 /* Wait for driver event */ + +/****************************** TYPES ******************************/ + +/* ----------------------- WIRELESS HANDLER ----------------------- */ +/* + * A wireless handler is just a standard function, that looks like the + * ioctl handler. + * We also define there how a handler list look like... As the Wireless + * Extension space is quite dense, we use a simple array, which is faster + * (that's the perfect hash table ;-). + */ + +/* + * Meta data about the request passed to the iw_handler. + * Most handlers can safely ignore what's in there. + * The 'cmd' field might come handy if you want to use the same handler + * for multiple command... + * This struct is also my long term insurance. I can add new fields here + * without breaking the prototype of iw_handler... + */ +struct iw_request_info +{ + __u16 cmd; /* Wireless Extension command */ + __u16 flags; /* More to come ;-) */ +}; + +struct net_device; + +/* + * This is how a function handling a Wireless Extension should look + * like (both get and set, standard and private). + */ +typedef int (*iw_handler)(struct net_device *dev, struct iw_request_info *info, + union iwreq_data *wrqu, char *extra); + +/* + * This define all the handler that the driver export. + * As you need only one per driver type, please use a static const + * shared by all driver instances... Same for the members... + * This will be linked from net_device in <linux/netdevice.h> + */ +struct iw_handler_def +{ + /* Number of handlers defined (more precisely, index of the + * last defined handler + 1) */ + __u16 num_standard; + __u16 num_private; + /* Number of private arg description */ + __u16 num_private_args; + + /* Array of handlers for standard ioctls + * We will call dev->wireless_handlers->standard[ioctl - SIOCSIWNAME] + */ + const iw_handler * standard; + + /* Array of handlers for private ioctls + * Will call dev->wireless_handlers->private[ioctl - SIOCIWFIRSTPRIV] + */ + const iw_handler * private; + + /* Arguments of private handler. This one is just a list, so you + * can put it in any order you want and should not leave holes... + * We will automatically export that to user space... */ + const struct iw_priv_args * private_args; + + /* This field will be *removed* in the next version of WE */ + long spy_offset; /* DO NOT USE */ + + /* New location of get_wireless_stats, to de-bloat struct net_device. + * The old pointer in struct net_device will be gradually phased + * out, and drivers are encouraged to use this one... */ + struct iw_statistics* (*get_wireless_stats)(struct net_device *dev); +}; + +/* ---------------------- IOCTL DESCRIPTION ---------------------- */ +/* + * One of the main goal of the new interface is to deal entirely with + * user space/kernel space memory move. + * For that, we need to know : + * o if iwreq is a pointer or contain the full data + * o what is the size of the data to copy + * + * For private IOCTLs, we use the same rules as used by iwpriv and + * defined in struct iw_priv_args. + * + * For standard IOCTLs, things are quite different and we need to + * use the stuctures below. Actually, this struct is also more + * efficient, but that's another story... + */ + +/* + * Describe how a standard IOCTL looks like. + */ +struct iw_ioctl_description +{ + __u8 header_type; /* NULL, iw_point or other */ + __u8 token_type; /* Future */ + __u16 token_size; /* Granularity of payload */ + __u16 min_tokens; /* Min acceptable token number */ + __u16 max_tokens; /* Max acceptable token number */ + __u32 flags; /* Special handling of the request */ +}; + +/* Need to think of short header translation table. Later. */ + +/* --------------------- ENHANCED SPY SUPPORT --------------------- */ +/* + * In the old days, the driver was handling spy support all by itself. + * Now, the driver can delegate this task to Wireless Extensions. + * It needs to include this struct in its private part and use the + * standard spy iw_handler. + */ + +/* + * Instance specific spy data, i.e. addresses spied and quality for them. + */ +struct iw_spy_data +{ + /* --- Standard spy support --- */ + int spy_number; + u_char spy_address[IW_MAX_SPY][ETH_ALEN]; + struct iw_quality spy_stat[IW_MAX_SPY]; + /* --- Enhanced spy support (event) */ + struct iw_quality spy_thr_low; /* Low threshold */ + struct iw_quality spy_thr_high; /* High threshold */ + u_char spy_thr_under[IW_MAX_SPY]; +}; + +/* --------------------- DEVICE WIRELESS DATA --------------------- */ +/* + * This is all the wireless data specific to a device instance that + * is managed by the core of Wireless Extensions. + * We only keep pointer to those structures, so that a driver is free + * to share them between instances. + * This structure should be initialised before registering the device. + * Access to this data follow the same rules as any other struct net_device + * data (i.e. valid as long as struct net_device exist, same locking rules). + */ +struct iw_public_data { + /* Driver enhanced spy support */ + struct iw_spy_data * spy_data; +}; + +/**************************** PROTOTYPES ****************************/ +/* + * Functions part of the Wireless Extensions (defined in net/core/wireless.c). + * Those may be called only within the kernel. + */ + +/* First : function strictly used inside the kernel */ + +/* Handle /proc/net/wireless, called in net/code/dev.c */ +extern int dev_get_wireless_info(char * buffer, char **start, off_t offset, + int length); + +/* Handle IOCTLs, called in net/code/dev.c */ +extern int wireless_process_ioctl(struct ifreq *ifr, unsigned int cmd); + +/* Second : functions that may be called by driver modules */ + +/* Send a single event to user space */ +extern void wireless_send_event(struct net_device * dev, + unsigned int cmd, + union iwreq_data * wrqu, + char * extra); + +/* We may need a function to send a stream of events to user space. + * More on that later... */ + +/* Standard handler for SIOCSIWSPY */ +extern int iw_handler_set_spy(struct net_device * dev, + struct iw_request_info * info, + union iwreq_data * wrqu, + char * extra); +/* Standard handler for SIOCGIWSPY */ +extern int iw_handler_get_spy(struct net_device * dev, + struct iw_request_info * info, + union iwreq_data * wrqu, + char * extra); +/* Standard handler for SIOCSIWTHRSPY */ +extern int iw_handler_set_thrspy(struct net_device * dev, + struct iw_request_info *info, + union iwreq_data * wrqu, + char * extra); +/* Standard handler for SIOCGIWTHRSPY */ +extern int iw_handler_get_thrspy(struct net_device * dev, + struct iw_request_info *info, + union iwreq_data * wrqu, + char * extra); +/* Driver call to update spy records */ +extern void wireless_spy_update(struct net_device * dev, + unsigned char * address, + struct iw_quality * wstats); + +/************************* INLINE FUNTIONS *************************/ +/* + * Function that are so simple that it's more efficient inlining them + */ + +/*------------------------------------------------------------------*/ +/* + * Wrapper to add an Wireless Event to a stream of events. + */ +static inline char * +iwe_stream_add_event(char * stream, /* Stream of events */ + char * ends, /* End of stream */ + struct iw_event *iwe, /* Payload */ + int event_len) /* Real size of payload */ +{ + /* Check if it's possible */ + if((stream + event_len) < ends) { + iwe->len = event_len; + memcpy(stream, (char *) iwe, event_len); + stream += event_len; + } + return stream; +} + +/*------------------------------------------------------------------*/ +/* + * Wrapper to add an short Wireless Event containing a pointer to a + * stream of events. + */ +static inline char * +iwe_stream_add_point(char * stream, /* Stream of events */ + char * ends, /* End of stream */ + struct iw_event *iwe, /* Payload */ + char * extra) +{ + int event_len = IW_EV_POINT_LEN + iwe->u.data.length; + /* Check if it's possible */ + if((stream + event_len) < ends) { + iwe->len = event_len; + memcpy(stream, (char *) iwe, IW_EV_POINT_LEN); + memcpy(stream + IW_EV_POINT_LEN, extra, iwe->u.data.length); + stream += event_len; + } + return stream; +} + +/*------------------------------------------------------------------*/ +/* + * Wrapper to add a value to a Wireless Event in a stream of events. + * Be careful, this one is tricky to use properly : + * At the first run, you need to have (value = event + IW_EV_LCP_LEN). + */ +static inline char * +iwe_stream_add_value(char * event, /* Event in the stream */ + char * value, /* Value in event */ + char * ends, /* End of stream */ + struct iw_event *iwe, /* Payload */ + int event_len) /* Real size of payload */ +{ + /* Don't duplicate LCP */ + event_len -= IW_EV_LCP_LEN; + + /* Check if it's possible */ + if((value + event_len) < ends) { + /* Add new value */ + memcpy(value, (char *) iwe + IW_EV_LCP_LEN, event_len); + value += event_len; + /* Patch LCP */ + iwe->len = value - event; + memcpy(event, (char *) iwe, IW_EV_LCP_LEN); + } + return value; +} + +#endif /* _IW_HANDLER_H */ diff --git a/include/net/lapb.h b/include/net/lapb.h new file mode 100644 index 000000000000..96cb5ddaa9f1 --- /dev/null +++ b/include/net/lapb.h @@ -0,0 +1,152 @@ +#ifndef _LAPB_H +#define _LAPB_H +#include <linux/lapb.h> + +#define LAPB_HEADER_LEN 20 /* LAPB over Ethernet + a bit more */ + +#define LAPB_ACK_PENDING_CONDITION 0x01 +#define LAPB_REJECT_CONDITION 0x02 +#define LAPB_PEER_RX_BUSY_CONDITION 0x04 + +/* Control field templates */ +#define LAPB_I 0x00 /* Information frames */ +#define LAPB_S 0x01 /* Supervisory frames */ +#define LAPB_U 0x03 /* Unnumbered frames */ + +#define LAPB_RR 0x01 /* Receiver ready */ +#define LAPB_RNR 0x05 /* Receiver not ready */ +#define LAPB_REJ 0x09 /* Reject */ + +#define LAPB_SABM 0x2F /* Set Asynchronous Balanced Mode */ +#define LAPB_SABME 0x6F /* Set Asynchronous Balanced Mode Extended */ +#define LAPB_DISC 0x43 /* Disconnect */ +#define LAPB_DM 0x0F /* Disconnected mode */ +#define LAPB_UA 0x63 /* Unnumbered acknowledge */ +#define LAPB_FRMR 0x87 /* Frame reject */ + +#define LAPB_ILLEGAL 0x100 /* Impossible to be a real frame type */ + +#define LAPB_SPF 0x10 /* Poll/final bit for standard LAPB */ +#define LAPB_EPF 0x01 /* Poll/final bit for extended LAPB */ + +#define LAPB_FRMR_W 0x01 /* Control field invalid */ +#define LAPB_FRMR_X 0x02 /* I field invalid */ +#define LAPB_FRMR_Y 0x04 /* I field too long */ +#define LAPB_FRMR_Z 0x08 /* Invalid N(R) */ + +#define LAPB_POLLOFF 0 +#define LAPB_POLLON 1 + +/* LAPB C-bit */ +#define LAPB_COMMAND 1 +#define LAPB_RESPONSE 2 + +#define LAPB_ADDR_A 0x03 +#define LAPB_ADDR_B 0x01 +#define LAPB_ADDR_C 0x0F +#define LAPB_ADDR_D 0x07 + +/* Define Link State constants. */ +enum { + LAPB_STATE_0, /* Disconnected State */ + LAPB_STATE_1, /* Awaiting Connection State */ + LAPB_STATE_2, /* Awaiting Disconnection State */ + LAPB_STATE_3, /* Data Transfer State */ + LAPB_STATE_4 /* Frame Reject State */ +}; + +#define LAPB_DEFAULT_MODE (LAPB_STANDARD | LAPB_SLP | LAPB_DTE) +#define LAPB_DEFAULT_WINDOW 7 /* Window=7 */ +#define LAPB_DEFAULT_T1 (5 * HZ) /* T1=5s */ +#define LAPB_DEFAULT_T2 (1 * HZ) /* T2=1s */ +#define LAPB_DEFAULT_N2 20 /* N2=20 */ + +#define LAPB_SMODULUS 8 +#define LAPB_EMODULUS 128 + +/* + * Information about the current frame. + */ +struct lapb_frame { + unsigned short type; /* Parsed type */ + unsigned short nr, ns; /* N(R), N(S) */ + unsigned char cr; /* Command/Response */ + unsigned char pf; /* Poll/Final */ + unsigned char control[2]; /* Original control data*/ +}; + +/* + * The per LAPB connection control structure. + */ +struct lapb_cb { + struct list_head node; + struct net_device *dev; + + /* Link status fields */ + unsigned int mode; + unsigned char state; + unsigned short vs, vr, va; + unsigned char condition; + unsigned short n2, n2count; + unsigned short t1, t2; + struct timer_list t1timer, t2timer; + + /* Internal control information */ + struct sk_buff_head write_queue; + struct sk_buff_head ack_queue; + unsigned char window; + struct lapb_register_struct callbacks; + + /* FRMR control information */ + struct lapb_frame frmr_data; + unsigned char frmr_type; + + atomic_t refcnt; +}; + +/* lapb_iface.c */ +extern void lapb_connect_confirmation(struct lapb_cb *lapb, int); +extern void lapb_connect_indication(struct lapb_cb *lapb, int); +extern void lapb_disconnect_confirmation(struct lapb_cb *lapb, int); +extern void lapb_disconnect_indication(struct lapb_cb *lapb, int); +extern int lapb_data_indication(struct lapb_cb *lapb, struct sk_buff *); +extern int lapb_data_transmit(struct lapb_cb *lapb, struct sk_buff *); + +/* lapb_in.c */ +extern void lapb_data_input(struct lapb_cb *lapb, struct sk_buff *); + +/* lapb_out.c */ +extern void lapb_kick(struct lapb_cb *lapb); +extern void lapb_transmit_buffer(struct lapb_cb *lapb, struct sk_buff *, int); +extern void lapb_establish_data_link(struct lapb_cb *lapb); +extern void lapb_enquiry_response(struct lapb_cb *lapb); +extern void lapb_timeout_response(struct lapb_cb *lapb); +extern void lapb_check_iframes_acked(struct lapb_cb *lapb, unsigned short); +extern void lapb_check_need_response(struct lapb_cb *lapb, int, int); + +/* lapb_subr.c */ +extern void lapb_clear_queues(struct lapb_cb *lapb); +extern void lapb_frames_acked(struct lapb_cb *lapb, unsigned short); +extern void lapb_requeue_frames(struct lapb_cb *lapb); +extern int lapb_validate_nr(struct lapb_cb *lapb, unsigned short); +extern int lapb_decode(struct lapb_cb *lapb, struct sk_buff *, struct lapb_frame *); +extern void lapb_send_control(struct lapb_cb *lapb, int, int, int); +extern void lapb_transmit_frmr(struct lapb_cb *lapb); + +/* lapb_timer.c */ +extern void lapb_start_t1timer(struct lapb_cb *lapb); +extern void lapb_start_t2timer(struct lapb_cb *lapb); +extern void lapb_stop_t1timer(struct lapb_cb *lapb); +extern void lapb_stop_t2timer(struct lapb_cb *lapb); +extern int lapb_t1timer_running(struct lapb_cb *lapb); + +/* + * Debug levels. + * 0 = Off + * 1 = State Changes + * 2 = Packets I/O and State Changes + * 3 = Hex dumps, Packets I/O and State Changes. + */ +#define LAPB_DEBUG 0 + +#endif diff --git a/include/net/llc.h b/include/net/llc.h new file mode 100644 index 000000000000..c9aed2a8b4e2 --- /dev/null +++ b/include/net/llc.h @@ -0,0 +1,99 @@ +#ifndef LLC_H +#define LLC_H +/* + * Copyright (c) 1997 by Procom Technology, Inc. + * 2001-2003 by Arnaldo Carvalho de Melo <acme@conectiva.com.br> + * + * This program can be redistributed or modified under the terms of the + * GNU General Public License as published by the Free Software Foundation. + * This program is distributed without any warranty or implied warranty + * of merchantability or fitness for a particular purpose. + * + * See the GNU General Public License for more details. + */ + +#include <linux/if.h> +#include <linux/if_ether.h> +#include <linux/list.h> +#include <linux/spinlock.h> + +struct net_device; +struct packet_type; +struct sk_buff; + +struct llc_addr { + unsigned char lsap; + unsigned char mac[IFHWADDRLEN]; +}; + +#define LLC_SAP_STATE_INACTIVE 1 +#define LLC_SAP_STATE_ACTIVE 2 + +/** + * struct llc_sap - Defines the SAP component + * + * @station - station this sap belongs to + * @state - sap state + * @p_bit - only lowest-order bit used + * @f_bit - only lowest-order bit used + * @laddr - SAP value in this 'lsap' + * @node - entry in station sap_list + * @sk_list - LLC sockets this one manages + */ +struct llc_sap { + unsigned char state; + unsigned char p_bit; + unsigned char f_bit; + int (*rcv_func)(struct sk_buff *skb, + struct net_device *dev, + struct packet_type *pt); + struct llc_addr laddr; + struct list_head node; + struct { + rwlock_t lock; + struct hlist_head list; + } sk_list; +}; + +#define LLC_DEST_INVALID 0 /* Invalid LLC PDU type */ +#define LLC_DEST_SAP 1 /* Type 1 goes here */ +#define LLC_DEST_CONN 2 /* Type 2 goes here */ + +extern struct list_head llc_sap_list; +extern rwlock_t llc_sap_list_lock; +extern unsigned char llc_station_mac_sa[ETH_ALEN]; + +extern int llc_rcv(struct sk_buff *skb, struct net_device *dev, + struct packet_type *pt); + +extern int llc_mac_hdr_init(struct sk_buff *skb, + unsigned char *sa, unsigned char *da); + +extern void llc_add_pack(int type, void (*handler)(struct llc_sap *sap, + struct sk_buff *skb)); +extern void llc_remove_pack(int type); + +extern void llc_set_station_handler(void (*handler)(struct sk_buff *skb)); + +extern struct llc_sap *llc_sap_open(unsigned char lsap, + int (*rcv)(struct sk_buff *skb, + struct net_device *dev, + struct packet_type *pt)); +extern void llc_sap_close(struct llc_sap *sap); + +extern struct llc_sap *llc_sap_find(unsigned char sap_value); + +extern int llc_build_and_send_ui_pkt(struct llc_sap *sap, struct sk_buff *skb, + unsigned char *dmac, unsigned char dsap); + +extern int llc_station_init(void); +extern void llc_station_exit(void); + +#ifdef CONFIG_PROC_FS +extern int llc_proc_init(void); +extern void llc_proc_exit(void); +#else +#define llc_proc_init() (0) +#define llc_proc_exit() do { } while(0) +#endif /* CONFIG_PROC_FS */ +#endif /* LLC_H */ diff --git a/include/net/llc_c_ac.h b/include/net/llc_c_ac.h new file mode 100644 index 000000000000..df83f69d2de4 --- /dev/null +++ b/include/net/llc_c_ac.h @@ -0,0 +1,202 @@ +#ifndef LLC_C_AC_H +#define LLC_C_AC_H +/* + * Copyright (c) 1997 by Procom Technology,Inc. + * 2001 by Arnaldo Carvalho de Melo <acme@conectiva.com.br> + * + * This program can be redistributed or modified under the terms of the + * GNU General Public License as published by the Free Software Foundation. + * This program is distributed without any warranty or implied warranty + * of merchantability or fitness for a particular purpose. + * + * See the GNU General Public License for more details. + */ +/* Connection component state transition actions */ +/* + * Connection state transition actions + * (Fb = F bit; Pb = P bit; Xb = X bit) + */ +#define LLC_CONN_AC_CLR_REMOTE_BUSY 1 +#define LLC_CONN_AC_CONN_IND 2 +#define LLC_CONN_AC_CONN_CONFIRM 3 +#define LLC_CONN_AC_DATA_IND 4 +#define LLC_CONN_AC_DISC_IND 5 +#define LLC_CONN_AC_RESET_IND 6 +#define LLC_CONN_AC_RESET_CONFIRM 7 +#define LLC_CONN_AC_REPORT_STATUS 8 +#define LLC_CONN_AC_CLR_REMOTE_BUSY_IF_Fb_EQ_1 9 +#define LLC_CONN_AC_STOP_REJ_TMR_IF_DATA_FLAG_EQ_2 10 +#define LLC_CONN_AC_SEND_DISC_CMD_Pb_SET_X 11 +#define LLC_CONN_AC_SEND_DM_RSP_Fb_SET_Pb 12 +#define LLC_CONN_AC_SEND_DM_RSP_Fb_SET_1 13 +#define LLC_CONN_AC_SEND_DM_RSP_Fb_SET_F_FLAG 14 +#define LLC_CONN_AC_SEND_FRMR_RSP_Fb_SET_X 15 +#define LLC_CONN_AC_RESEND_FRMR_RSP_Fb_SET_0 16 +#define LLC_CONN_AC_RESEND_FRMR_RSP_Fb_SET_Pb 17 +#define LLC_CONN_AC_SEND_I_CMD_Pb_SET_1 18 +#define LLC_CONN_AC_RESEND_I_CMD_Pb_SET_1 19 +#define LLC_CONN_AC_RESEND_I_CMD_Pb_SET_1_OR_SEND_RR 20 +#define LLC_CONN_AC_SEND_I_XXX_Xb_SET_0 21 +#define LLC_CONN_AC_RESEND_I_XXX_Xb_SET_0 22 +#define LLC_CONN_AC_RESEND_I_XXX_Xb_SET_0_OR_SEND_RR 23 +#define LLC_CONN_AC_RESEND_I_RSP_Fb_SET_1 24 +#define LLC_CONN_AC_SEND_REJ_CMD_Pb_SET_1 25 +#define LLC_CONN_AC_SEND_REJ_RSP_Fb_SET_1 26 +#define LLC_CONN_AC_SEND_REJ_XXX_Xb_SET_0 27 +#define LLC_CONN_AC_SEND_RNR_CMD_Pb_SET_1 28 +#define LLC_CONN_AC_SEND_RNR_RSP_Fb_SET_1 29 +#define LLC_CONN_AC_SEND_RNR_XXX_Xb_SET_0 30 +#define LLC_CONN_AC_SET_REMOTE_BUSY 31 +#define LLC_CONN_AC_OPTIONAL_SEND_RNR_XXX_Xb_SET_0 32 +#define LLC_CONN_AC_SEND_RR_CMD_Pb_SET_1 33 +#define LLC_CONN_AC_SEND_ACK_CMD_Pb_SET_1 34 +#define LLC_CONN_AC_SEND_RR_RSP_Fb_SET_1 35 +#define LLC_CONN_AC_SEND_ACK_RSP_Fb_SET_1 36 +#define LLC_CONN_AC_SEND_RR_XXX_Xb_SET_0 37 +#define LLC_CONN_AC_SEND_ACK_XXX_Xb_SET_0 38 +#define LLC_CONN_AC_SEND_SABME_CMD_Pb_SET_X 39 +#define LLC_CONN_AC_SEND_UA_RSP_Fb_SET_Pb 40 +#define LLC_CONN_AC_SEND_UA_RSP_Fb_SET_F_FLAG 41 +#define LLC_CONN_AC_S_FLAG_SET_0 42 +#define LLC_CONN_AC_S_FLAG_SET_1 43 +#define LLC_CONN_AC_START_P_TMR 44 +#define LLC_CONN_AC_START_ACK_TMR 45 +#define LLC_CONN_AC_START_REJ_TMR 46 +#define LLC_CONN_AC_START_ACK_TMR_IF_NOT_RUNNING 47 +#define LLC_CONN_AC_STOP_ACK_TMR 48 +#define LLC_CONN_AC_STOP_P_TMR 49 +#define LLC_CONN_AC_STOP_REJ_TMR 50 +#define LLC_CONN_AC_STOP_ALL_TMRS 51 +#define LLC_CONN_AC_STOP_OTHER_TMRS 52 +#define LLC_CONN_AC_UPDATE_Nr_RECEIVED 53 +#define LLC_CONN_AC_UPDATE_P_FLAG 54 +#define LLC_CONN_AC_DATA_FLAG_SET_2 55 +#define LLC_CONN_AC_DATA_FLAG_SET_0 56 +#define LLC_CONN_AC_DATA_FLAG_SET_1 57 +#define LLC_CONN_AC_DATA_FLAG_SET_1_IF_DATA_FLAG_EQ_0 58 +#define LLC_CONN_AC_P_FLAG_SET_0 59 +#define LLC_CONN_AC_P_FLAG_SET_P 60 +#define LLC_CONN_AC_REMOTE_BUSY_SET_0 61 +#define LLC_CONN_AC_RETRY_CNT_SET_0 62 +#define LLC_CONN_AC_RETRY_CNT_INC_BY_1 63 +#define LLC_CONN_AC_Vr_SET_0 64 +#define LLC_CONN_AC_Vr_INC_BY_1 65 +#define LLC_CONN_AC_Vs_SET_0 66 +#define LLC_CONN_AC_Vs_SET_Nr 67 +#define LLC_CONN_AC_F_FLAG_SET_P 68 +#define LLC_CONN_AC_STOP_SENDACK_TMR 70 +#define LLC_CONN_AC_START_SENDACK_TMR_IF_NOT_RUNNING 71 + +typedef int (*llc_conn_action_t)(struct sock *sk, struct sk_buff *skb); + +extern int llc_conn_ac_clear_remote_busy(struct sock *sk, struct sk_buff *skb); +extern int llc_conn_ac_conn_ind(struct sock *sk, struct sk_buff *skb); +extern int llc_conn_ac_conn_confirm(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_data_ind(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_disc_ind(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_rst_ind(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_rst_confirm(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_clear_remote_busy_if_f_eq_1(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_stop_rej_tmr_if_data_flag_eq_2(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_send_disc_cmd_p_set_x(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_send_dm_rsp_f_set_p(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_send_dm_rsp_f_set_1(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_send_frmr_rsp_f_set_x(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_resend_frmr_rsp_f_set_0(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_resend_frmr_rsp_f_set_p(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_send_i_cmd_p_set_1(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_send_i_xxx_x_set_0(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_resend_i_xxx_x_set_0(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_resend_i_xxx_x_set_0_or_send_rr(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_resend_i_rsp_f_set_1(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_send_rej_cmd_p_set_1(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_send_rej_rsp_f_set_1(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_send_rej_xxx_x_set_0(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_send_rnr_cmd_p_set_1(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_send_rnr_rsp_f_set_1(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_send_rnr_xxx_x_set_0(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_set_remote_busy(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_opt_send_rnr_xxx_x_set_0(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_send_rr_cmd_p_set_1(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_send_rr_rsp_f_set_1(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_send_ack_rsp_f_set_1(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_send_rr_xxx_x_set_0(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_send_ack_xxx_x_set_0(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_send_sabme_cmd_p_set_x(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_send_ua_rsp_f_set_p(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_set_s_flag_0(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_set_s_flag_1(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_start_p_timer(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_start_ack_timer(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_start_rej_timer(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_start_ack_tmr_if_not_running(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_stop_ack_timer(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_stop_p_timer(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_stop_rej_timer(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_stop_all_timers(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_stop_other_timers(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_upd_nr_received(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_inc_tx_win_size(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_dec_tx_win_size(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_upd_p_flag(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_set_data_flag_2(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_set_data_flag_0(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_set_data_flag_1(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_set_data_flag_1_if_data_flag_eq_0(struct sock* sk, + struct sk_buff *skb); +extern int llc_conn_ac_set_p_flag_0(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_set_remote_busy_0(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_set_retry_cnt_0(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_set_cause_flag_0(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_set_cause_flag_1(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_inc_retry_cnt_by_1(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_set_vr_0(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_inc_vr_by_1(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_set_vs_0(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_set_vs_nr(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_rst_vs(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_upd_vs(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_disc(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_reset(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_disc_confirm(struct sock* sk, struct sk_buff *skb); +extern u8 llc_circular_between(u8 a, u8 b, u8 c); +extern int llc_conn_ac_send_ack_if_needed(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_adjust_npta_by_rr(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_adjust_npta_by_rnr(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_rst_sendack_flag(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_send_i_rsp_as_ack(struct sock* sk, struct sk_buff *skb); +extern int llc_conn_ac_send_i_as_ack(struct sock* sk, struct sk_buff *skb); + +extern void llc_conn_busy_tmr_cb(unsigned long timeout_data); +extern void llc_conn_pf_cycle_tmr_cb(unsigned long timeout_data); +extern void llc_conn_ack_tmr_cb(unsigned long timeout_data); +extern void llc_conn_rej_tmr_cb(unsigned long timeout_data); + +extern void llc_conn_set_p_flag(struct sock *sk, u8 value); +#endif /* LLC_C_AC_H */ diff --git a/include/net/llc_c_ev.h b/include/net/llc_c_ev.h new file mode 100644 index 000000000000..23a409381fa9 --- /dev/null +++ b/include/net/llc_c_ev.h @@ -0,0 +1,269 @@ +#ifndef LLC_C_EV_H +#define LLC_C_EV_H +/* + * Copyright (c) 1997 by Procom Technology,Inc. + * 2001 by Arnaldo Carvalho de Melo <acme@conectiva.com.br> + * + * This program can be redistributed or modified under the terms of the + * GNU General Public License as published by the Free Software Foundation. + * This program is distributed without any warranty or implied warranty + * of merchantability or fitness for a particular purpose. + * + * See the GNU General Public License for more details. + */ + +#include <net/sock.h> + +/* Connection component state transition event qualifiers */ +/* Types of events (possible values in 'ev->type') */ +#define LLC_CONN_EV_TYPE_SIMPLE 1 +#define LLC_CONN_EV_TYPE_CONDITION 2 +#define LLC_CONN_EV_TYPE_PRIM 3 +#define LLC_CONN_EV_TYPE_PDU 4 /* command/response PDU */ +#define LLC_CONN_EV_TYPE_ACK_TMR 5 +#define LLC_CONN_EV_TYPE_P_TMR 6 +#define LLC_CONN_EV_TYPE_REJ_TMR 7 +#define LLC_CONN_EV_TYPE_BUSY_TMR 8 +#define LLC_CONN_EV_TYPE_RPT_STATUS 9 +#define LLC_CONN_EV_TYPE_SENDACK_TMR 10 + +#define NBR_CONN_EV 5 +/* Connection events which cause state transitions when fully qualified */ + +#define LLC_CONN_EV_CONN_REQ 1 +#define LLC_CONN_EV_CONN_RESP 2 +#define LLC_CONN_EV_DATA_REQ 3 +#define LLC_CONN_EV_DISC_REQ 4 +#define LLC_CONN_EV_RESET_REQ 5 +#define LLC_CONN_EV_RESET_RESP 6 +#define LLC_CONN_EV_LOCAL_BUSY_DETECTED 7 +#define LLC_CONN_EV_LOCAL_BUSY_CLEARED 8 +#define LLC_CONN_EV_RX_BAD_PDU 9 +#define LLC_CONN_EV_RX_DISC_CMD_Pbit_SET_X 10 +#define LLC_CONN_EV_RX_DM_RSP_Fbit_SET_X 11 +#define LLC_CONN_EV_RX_FRMR_RSP_Fbit_SET_X 12 +#define LLC_CONN_EV_RX_I_CMD_Pbit_SET_X 13 +#define LLC_CONN_EV_RX_I_CMD_Pbit_SET_X_UNEXPD_Ns 14 +#define LLC_CONN_EV_RX_I_CMD_Pbit_SET_X_INVAL_Ns 15 +#define LLC_CONN_EV_RX_I_RSP_Fbit_SET_X 16 +#define LLC_CONN_EV_RX_I_RSP_Fbit_SET_X_UNEXPD_Ns 17 +#define LLC_CONN_EV_RX_I_RSP_Fbit_SET_X_INVAL_Ns 18 +#define LLC_CONN_EV_RX_REJ_CMD_Pbit_SET_X 19 +#define LLC_CONN_EV_RX_REJ_RSP_Fbit_SET_X 20 +#define LLC_CONN_EV_RX_RNR_CMD_Pbit_SET_X 21 +#define LLC_CONN_EV_RX_RNR_RSP_Fbit_SET_X 22 +#define LLC_CONN_EV_RX_RR_CMD_Pbit_SET_X 23 +#define LLC_CONN_EV_RX_RR_RSP_Fbit_SET_X 24 +#define LLC_CONN_EV_RX_SABME_CMD_Pbit_SET_X 25 +#define LLC_CONN_EV_RX_UA_RSP_Fbit_SET_X 26 +#define LLC_CONN_EV_RX_XXX_CMD_Pbit_SET_X 27 +#define LLC_CONN_EV_RX_XXX_RSP_Fbit_SET_X 28 +#define LLC_CONN_EV_RX_XXX_YYY 29 +#define LLC_CONN_EV_RX_ZZZ_CMD_Pbit_SET_X_INVAL_Nr 30 +#define LLC_CONN_EV_RX_ZZZ_RSP_Fbit_SET_X_INVAL_Nr 31 +#define LLC_CONN_EV_P_TMR_EXP 32 +#define LLC_CONN_EV_ACK_TMR_EXP 33 +#define LLC_CONN_EV_REJ_TMR_EXP 34 +#define LLC_CONN_EV_BUSY_TMR_EXP 35 +#define LLC_CONN_EV_RX_XXX_CMD_Pbit_SET_1 36 +#define LLC_CONN_EV_RX_XXX_CMD_Pbit_SET_0 37 +#define LLC_CONN_EV_RX_I_CMD_Pbit_SET_0_UNEXPD_Ns 38 +#define LLC_CONN_EV_RX_I_RSP_Fbit_SET_0_UNEXPD_Ns 39 +#define LLC_CONN_EV_RX_I_RSP_Fbit_SET_1_UNEXPD_Ns 40 +#define LLC_CONN_EV_RX_I_CMD_Pbit_SET_1_UNEXPD_Ns 41 +#define LLC_CONN_EV_RX_I_CMD_Pbit_SET_0 42 +#define LLC_CONN_EV_RX_I_RSP_Fbit_SET_0 43 +#define LLC_CONN_EV_RX_I_CMD_Pbit_SET_1 44 +#define LLC_CONN_EV_RX_RR_CMD_Pbit_SET_0 45 +#define LLC_CONN_EV_RX_RR_RSP_Fbit_SET_0 46 +#define LLC_CONN_EV_RX_RR_RSP_Fbit_SET_1 47 +#define LLC_CONN_EV_RX_RR_CMD_Pbit_SET_1 48 +#define LLC_CONN_EV_RX_RNR_CMD_Pbit_SET_0 49 +#define LLC_CONN_EV_RX_RNR_RSP_Fbit_SET_0 50 +#define LLC_CONN_EV_RX_RNR_RSP_Fbit_SET_1 51 +#define LLC_CONN_EV_RX_RNR_CMD_Pbit_SET_1 52 +#define LLC_CONN_EV_RX_REJ_CMD_Pbit_SET_0 53 +#define LLC_CONN_EV_RX_REJ_RSP_Fbit_SET_0 54 +#define LLC_CONN_EV_RX_REJ_CMD_Pbit_SET_1 55 +#define LLC_CONN_EV_RX_I_RSP_Fbit_SET_1 56 +#define LLC_CONN_EV_RX_REJ_RSP_Fbit_SET_1 57 +#define LLC_CONN_EV_RX_XXX_RSP_Fbit_SET_1 58 +#define LLC_CONN_EV_TX_BUFF_FULL 59 + +#define LLC_CONN_EV_INIT_P_F_CYCLE 100 +/* + * Connection event qualifiers; for some events a certain combination of + * these qualifiers must be TRUE before event recognized valid for state; + * these constants act as indexes into the Event Qualifier function + * table + */ +#define LLC_CONN_EV_QFY_DATA_FLAG_EQ_1 1 +#define LLC_CONN_EV_QFY_DATA_FLAG_EQ_0 2 +#define LLC_CONN_EV_QFY_DATA_FLAG_EQ_2 3 +#define LLC_CONN_EV_QFY_P_FLAG_EQ_1 4 +#define LLC_CONN_EV_QFY_P_FLAG_EQ_0 5 +#define LLC_CONN_EV_QFY_P_FLAG_EQ_Fbit 6 +#define LLC_CONN_EV_QFY_REMOTE_BUSY_EQ_0 7 +#define LLC_CONN_EV_QFY_RETRY_CNT_LT_N2 8 +#define LLC_CONN_EV_QFY_RETRY_CNT_GTE_N2 9 +#define LLC_CONN_EV_QFY_S_FLAG_EQ_1 10 +#define LLC_CONN_EV_QFY_S_FLAG_EQ_0 11 +#define LLC_CONN_EV_QFY_INIT_P_F_CYCLE 12 + +struct llc_conn_state_ev { + u8 type; + u8 prim; + u8 prim_type; + u8 reason; + u8 status; + u8 ind_prim; + u8 cfm_prim; +}; + +static __inline__ struct llc_conn_state_ev *llc_conn_ev(struct sk_buff *skb) +{ + return (struct llc_conn_state_ev *)skb->cb; +} + +typedef int (*llc_conn_ev_t)(struct sock *sk, struct sk_buff *skb); +typedef int (*llc_conn_ev_qfyr_t)(struct sock *sk, struct sk_buff *skb); + +extern int llc_conn_ev_conn_req(struct sock *sk, struct sk_buff *skb); +extern int llc_conn_ev_data_req(struct sock *sk, struct sk_buff *skb); +extern int llc_conn_ev_disc_req(struct sock *sk, struct sk_buff *skb); +extern int llc_conn_ev_rst_req(struct sock *sk, struct sk_buff *skb); +extern int llc_conn_ev_local_busy_detected(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_local_busy_cleared(struct sock *sk, struct sk_buff *skb); +extern int llc_conn_ev_rx_bad_pdu(struct sock *sk, struct sk_buff *skb); +extern int llc_conn_ev_rx_disc_cmd_pbit_set_x(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_dm_rsp_fbit_set_x(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_frmr_rsp_fbit_set_x(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_i_cmd_pbit_set_x_inval_ns(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_i_rsp_fbit_set_x(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_i_rsp_fbit_set_x_unexpd_ns(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_i_rsp_fbit_set_x_inval_ns(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_rej_rsp_fbit_set_x(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_sabme_cmd_pbit_set_x(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_ua_rsp_fbit_set_x(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_xxx_cmd_pbit_set_x(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_xxx_rsp_fbit_set_x(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_zzz_cmd_pbit_set_x_inval_nr(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_zzz_rsp_fbit_set_x_inval_nr(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_p_tmr_exp(struct sock *sk, struct sk_buff *skb); +extern int llc_conn_ev_ack_tmr_exp(struct sock *sk, struct sk_buff *skb); +extern int llc_conn_ev_rej_tmr_exp(struct sock *sk, struct sk_buff *skb); +extern int llc_conn_ev_busy_tmr_exp(struct sock *sk, struct sk_buff *skb); +extern int llc_conn_ev_sendack_tmr_exp(struct sock *sk, struct sk_buff *skb); +/* NOT_USED functions and their variations */ +extern int llc_conn_ev_rx_xxx_cmd_pbit_set_1(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_xxx_rsp_fbit_set_1(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_i_cmd_pbit_set_0_unexpd_ns(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_i_cmd_pbit_set_1_unexpd_ns(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_i_cmd_pbit_set_0(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_i_cmd_pbit_set_1(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_i_rsp_fbit_set_0_unexpd_ns(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_i_rsp_fbit_set_1_unexpd_ns(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_i_rsp_fbit_set_0(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_i_rsp_fbit_set_1(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_rr_cmd_pbit_set_0(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_rr_cmd_pbit_set_1(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_rr_rsp_fbit_set_0(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_rr_rsp_fbit_set_1(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_rnr_cmd_pbit_set_0(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_rnr_cmd_pbit_set_1(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_rnr_rsp_fbit_set_0(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_rnr_rsp_fbit_set_1(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_rej_cmd_pbit_set_0(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_rej_cmd_pbit_set_1(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_rej_rsp_fbit_set_0(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_rej_rsp_fbit_set_1(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_rx_any_frame(struct sock *sk, struct sk_buff *skb); +extern int llc_conn_ev_tx_buffer_full(struct sock *sk, struct sk_buff *skb); +extern int llc_conn_ev_init_p_f_cycle(struct sock *sk, struct sk_buff *skb); + +/* Available connection action qualifiers */ +extern int llc_conn_ev_qlfy_data_flag_eq_1(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_qlfy_data_flag_eq_0(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_qlfy_data_flag_eq_2(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_qlfy_p_flag_eq_1(struct sock *sk, struct sk_buff *skb); +extern int llc_conn_ev_qlfy_last_frame_eq_1(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_qlfy_last_frame_eq_0(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_qlfy_p_flag_eq_0(struct sock *sk, struct sk_buff *skb); +extern int llc_conn_ev_qlfy_p_flag_eq_f(struct sock *sk, struct sk_buff *skb); +extern int llc_conn_ev_qlfy_remote_busy_eq_0(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_qlfy_remote_busy_eq_1(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_qlfy_retry_cnt_lt_n2(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_qlfy_retry_cnt_gte_n2(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_qlfy_s_flag_eq_1(struct sock *sk, struct sk_buff *skb); +extern int llc_conn_ev_qlfy_s_flag_eq_0(struct sock *sk, struct sk_buff *skb); +extern int llc_conn_ev_qlfy_cause_flag_eq_1(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_qlfy_cause_flag_eq_0(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_qlfy_set_status_conn(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_qlfy_set_status_disc(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_qlfy_set_status_failed(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_qlfy_set_status_remote_busy(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_qlfy_set_status_refuse(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_qlfy_set_status_conflict(struct sock *sk, + struct sk_buff *skb); +extern int llc_conn_ev_qlfy_set_status_rst_done(struct sock *sk, + struct sk_buff *skb); + +static __inline__ int llc_conn_space(struct sock *sk, struct sk_buff *skb) +{ + return atomic_read(&sk->sk_rmem_alloc) + skb->truesize < + (unsigned)sk->sk_rcvbuf; +} +#endif /* LLC_C_EV_H */ diff --git a/include/net/llc_c_st.h b/include/net/llc_c_st.h new file mode 100644 index 000000000000..0e79cfba4b3b --- /dev/null +++ b/include/net/llc_c_st.h @@ -0,0 +1,48 @@ +#ifndef LLC_C_ST_H +#define LLC_C_ST_H +/* + * Copyright (c) 1997 by Procom Technology,Inc. + * 2001 by Arnaldo Carvalho de Melo <acme@conectiva.com.br> + * + * This program can be redistributed or modified under the terms of the + * GNU General Public License as published by the Free Software Foundation. + * This program is distributed without any warranty or implied warranty + * of merchantability or fitness for a particular purpose. + * + * See the GNU General Public License for more details. + */ +/* Connection component state management */ +/* connection states */ +#define LLC_CONN_OUT_OF_SVC 0 /* prior to allocation */ + +#define LLC_CONN_STATE_ADM 1 /* disc, initial state */ +#define LLC_CONN_STATE_SETUP 2 /* disconnected state */ +#define LLC_CONN_STATE_NORMAL 3 /* connected state */ +#define LLC_CONN_STATE_BUSY 4 /* connected state */ +#define LLC_CONN_STATE_REJ 5 /* connected state */ +#define LLC_CONN_STATE_AWAIT 6 /* connected state */ +#define LLC_CONN_STATE_AWAIT_BUSY 7 /* connected state */ +#define LLC_CONN_STATE_AWAIT_REJ 8 /* connected state */ +#define LLC_CONN_STATE_D_CONN 9 /* disconnected state */ +#define LLC_CONN_STATE_RESET 10 /* disconnected state */ +#define LLC_CONN_STATE_ERROR 11 /* disconnected state */ +#define LLC_CONN_STATE_TEMP 12 /* disconnected state */ + +#define NBR_CONN_STATES 12 /* size of state table */ +#define NO_STATE_CHANGE 100 + +/* Connection state table structure */ +struct llc_conn_state_trans { + llc_conn_ev_t ev; + u8 next_state; + llc_conn_ev_qfyr_t *ev_qualifiers; + llc_conn_action_t *ev_actions; +}; + +struct llc_conn_state { + u8 current_state; + struct llc_conn_state_trans **transitions; +}; + +extern struct llc_conn_state llc_conn_state_table[]; +#endif /* LLC_C_ST_H */ diff --git a/include/net/llc_conn.h b/include/net/llc_conn.h new file mode 100644 index 000000000000..8ad3bc2c23d7 --- /dev/null +++ b/include/net/llc_conn.h @@ -0,0 +1,119 @@ +#ifndef LLC_CONN_H +#define LLC_CONN_H +/* + * Copyright (c) 1997 by Procom Technology, Inc. + * 2001, 2002 by Arnaldo Carvalho de Melo <acme@conectiva.com.br> + * + * This program can be redistributed or modified under the terms of the + * GNU General Public License as published by the Free Software Foundation. + * This program is distributed without any warranty or implied warranty + * of merchantability or fitness for a particular purpose. + * + * See the GNU General Public License for more details. + */ +#include <linux/timer.h> +#include <net/llc_if.h> +#include <net/sock.h> +#include <linux/llc.h> + +#define LLC_EVENT 1 +#define LLC_PACKET 2 + +#define LLC_P_TIME 2 +#define LLC_ACK_TIME 1 +#define LLC_REJ_TIME 3 +#define LLC_BUSY_TIME 3 + +struct llc_timer { + struct timer_list timer; + u16 expire; /* timer expire time */ +}; + +struct llc_sock { + /* struct sock must be the first member of llc_sock */ + struct sock sk; + struct sockaddr_llc addr; /* address sock is bound to */ + u8 state; /* state of connection */ + struct llc_sap *sap; /* pointer to parent SAP */ + struct llc_addr laddr; /* lsap/mac pair */ + struct llc_addr daddr; /* dsap/mac pair */ + struct net_device *dev; /* device to send to remote */ + u8 retry_count; /* number of retries */ + u8 ack_must_be_send; + u8 first_pdu_Ns; + u8 npta; + struct llc_timer ack_timer; + struct llc_timer pf_cycle_timer; + struct llc_timer rej_sent_timer; + struct llc_timer busy_state_timer; /* ind busy clr at remote LLC */ + u8 vS; /* seq# next in-seq I-PDU tx'd*/ + u8 vR; /* seq# next in-seq I-PDU rx'd*/ + u32 n2; /* max nbr re-tx's for timeout*/ + u32 n1; /* max nbr octets in I PDU */ + u8 k; /* tx window size; max = 127 */ + u8 rw; /* rx window size; max = 127 */ + u8 p_flag; /* state flags */ + u8 f_flag; + u8 s_flag; + u8 data_flag; + u8 remote_busy_flag; + u8 cause_flag; + struct sk_buff_head pdu_unack_q; /* PUDs sent/waiting ack */ + u16 link; /* network layer link number */ + u8 X; /* a temporary variable */ + u8 ack_pf; /* this flag indicates what is + the P-bit of acknowledge */ + u8 failed_data_req; /* recognize that already exist a + failed llc_data_req_handler + (tx_buffer_full or unacceptable + state */ + u8 dec_step; + u8 inc_cntr; + u8 dec_cntr; + u8 connect_step; + u8 last_nr; /* NR of last pdu received */ + u32 rx_pdu_hdr; /* used for saving header of last pdu + received and caused sending FRMR. + Used for resending FRMR */ +}; + +static inline struct llc_sock *llc_sk(const struct sock *sk) +{ + return (struct llc_sock *)sk; +} + +static __inline__ void llc_set_backlog_type(struct sk_buff *skb, char type) +{ + skb->cb[sizeof(skb->cb) - 1] = type; +} + +static __inline__ char llc_backlog_type(struct sk_buff *skb) +{ + return skb->cb[sizeof(skb->cb) - 1]; +} + +extern struct sock *llc_sk_alloc(int family, int priority, struct proto *prot); +extern void llc_sk_free(struct sock *sk); + +extern void llc_sk_reset(struct sock *sk); + +/* Access to a connection */ +extern int llc_conn_state_process(struct sock *sk, struct sk_buff *skb); +extern void llc_conn_send_pdu(struct sock *sk, struct sk_buff *skb); +extern void llc_conn_rtn_pdu(struct sock *sk, struct sk_buff *skb); +extern void llc_conn_resend_i_pdu_as_cmd(struct sock *sk, u8 nr, + u8 first_p_bit); +extern void llc_conn_resend_i_pdu_as_rsp(struct sock *sk, u8 nr, + u8 first_f_bit); +extern int llc_conn_remove_acked_pdus(struct sock *conn, u8 nr, + u16 *how_many_unacked); +extern struct sock *llc_lookup_established(struct llc_sap *sap, + struct llc_addr *daddr, + struct llc_addr *laddr); +extern void llc_sap_add_socket(struct llc_sap *sap, struct sock *sk); +extern void llc_sap_remove_socket(struct llc_sap *sap, struct sock *sk); + +extern u8 llc_data_accept_state(u8 state); +extern void llc_build_offset_table(void); +extern int llc_release_sockets(struct llc_sap *sap); +#endif /* LLC_CONN_H */ diff --git a/include/net/llc_if.h b/include/net/llc_if.h new file mode 100644 index 000000000000..090eaa0d71f9 --- /dev/null +++ b/include/net/llc_if.h @@ -0,0 +1,101 @@ +#ifndef LLC_IF_H +#define LLC_IF_H +/* + * Copyright (c) 1997 by Procom Technology,Inc. + * 2001 by Arnaldo Carvalho de Melo <acme@conectiva.com.br> + * + * This program can be redistributed or modified under the terms of the + * GNU General Public License as published by the Free Software Foundation. + * This program is distributed without any warranty or implied warranty + * of merchantability or fitness for a particular purpose. + * + * See the GNU General Public License for more details. + */ +/* Defines LLC interface to network layer */ +/* Available primitives */ +#include <linux/if.h> +#include <linux/if_arp.h> +#include <linux/llc.h> +#include <net/llc.h> + +#define LLC_DATAUNIT_PRIM 1 +#define LLC_CONN_PRIM 2 +#define LLC_DATA_PRIM 3 +#define LLC_DISC_PRIM 4 +#define LLC_RESET_PRIM 5 +#define LLC_FLOWCONTROL_PRIM 6 /* Not supported at this time */ +#define LLC_DISABLE_PRIM 7 +#define LLC_XID_PRIM 8 +#define LLC_TEST_PRIM 9 +#define LLC_SAP_ACTIVATION 10 +#define LLC_SAP_DEACTIVATION 11 + +#define LLC_NBR_PRIMITIVES 11 + +#define LLC_IND 1 +#define LLC_CONFIRM 2 + +/* Primitive type */ +#define LLC_PRIM_TYPE_REQ 1 +#define LLC_PRIM_TYPE_IND 2 +#define LLC_PRIM_TYPE_RESP 3 +#define LLC_PRIM_TYPE_CONFIRM 4 + +/* Reset reasons, remote entity or local LLC */ +#define LLC_RESET_REASON_REMOTE 1 +#define LLC_RESET_REASON_LOCAL 2 + +/* Disconnect reasons */ +#define LLC_DISC_REASON_RX_DM_RSP_PDU 0 +#define LLC_DISC_REASON_RX_DISC_CMD_PDU 1 +#define LLC_DISC_REASON_ACK_TMR_EXP 2 + +/* Confirm reasons */ +#define LLC_STATUS_CONN 0 /* connect confirm & reset confirm */ +#define LLC_STATUS_DISC 1 /* connect confirm & reset confirm */ +#define LLC_STATUS_FAILED 2 /* connect confirm & reset confirm */ +#define LLC_STATUS_IMPOSSIBLE 3 /* connect confirm */ +#define LLC_STATUS_RECEIVED 4 /* data conn */ +#define LLC_STATUS_REMOTE_BUSY 5 /* data conn */ +#define LLC_STATUS_REFUSE 6 /* data conn */ +#define LLC_STATUS_CONFLICT 7 /* disconnect conn */ +#define LLC_STATUS_RESET_DONE 8 /* */ + +extern u8 llc_mac_null_var[IFHWADDRLEN]; + +/** + * llc_mac_null - determines if a address is a null mac address + * @mac: Mac address to test if null. + * + * Determines if a given address is a null mac address. Returns 0 if the + * address is not a null mac, 1 if the address is a null mac. + */ +static __inline__ int llc_mac_null(u8 *mac) +{ + return !memcmp(mac, llc_mac_null_var, IFHWADDRLEN); +} + +static __inline__ int llc_addrany(struct llc_addr *addr) +{ + return llc_mac_null(addr->mac) && !addr->lsap; +} + +/** + * llc_mac_match - determines if two mac addresses are the same + * @mac1: First mac address to compare. + * @mac2: Second mac address to compare. + * + * Determines if two given mac address are the same. Returns 0 if there + * is not a complete match up to len, 1 if a complete match up to len is + * found. + */ +static __inline__ int llc_mac_match(u8 *mac1, u8 *mac2) +{ + return !memcmp(mac1, mac2, IFHWADDRLEN); +} + +extern int llc_establish_connection(struct sock *sk, u8 *lmac, + u8 *dmac, u8 dsap); +extern int llc_build_and_send_pkt(struct sock *sk, struct sk_buff *skb); +extern int llc_send_disc(struct sock *sk); +#endif /* LLC_IF_H */ diff --git a/include/net/llc_pdu.h b/include/net/llc_pdu.h new file mode 100644 index 000000000000..f45c37d89cf7 --- /dev/null +++ b/include/net/llc_pdu.h @@ -0,0 +1,436 @@ +#ifndef LLC_PDU_H +#define LLC_PDU_H +/* + * Copyright (c) 1997 by Procom Technology,Inc. + * 2001-2003 by Arnaldo Carvalho de Melo <acme@conectiva.com.br> + * + * This program can be redistributed or modified under the terms of the + * GNU General Public License as published by the Free Software Foundation. + * This program is distributed without any warranty or implied warranty + * of merchantability or fitness for a particular purpose. + * + * See the GNU General Public License for more details. + */ + +#include <linux/if_ether.h> +#include <linux/if_tr.h> + +/* Lengths of frame formats */ +#define LLC_PDU_LEN_I 4 /* header and 2 control bytes */ +#define LLC_PDU_LEN_S 4 +#define LLC_PDU_LEN_U 3 /* header and 1 control byte */ +/* Known SAP addresses */ +#define LLC_GLOBAL_SAP 0xFF +#define LLC_NULL_SAP 0x00 /* not network-layer visible */ +#define LLC_MGMT_INDIV 0x02 /* station LLC mgmt indiv addr */ +#define LLC_MGMT_GRP 0x03 /* station LLC mgmt group addr */ +#define LLC_RDE_SAP 0xA6 /* route ... */ + +/* SAP field bit masks */ +#define LLC_ISO_RESERVED_SAP 0x02 +#define LLC_SAP_GROUP_DSAP 0x01 +#define LLC_SAP_RESP_SSAP 0x01 + +/* Group/individual DSAP indicator is DSAP field */ +#define LLC_PDU_GROUP_DSAP_MASK 0x01 +#define LLC_PDU_IS_GROUP_DSAP(pdu) \ + ((pdu->dsap & LLC_PDU_GROUP_DSAP_MASK) ? 0 : 1) +#define LLC_PDU_IS_INDIV_DSAP(pdu) \ + (!(pdu->dsap & LLC_PDU_GROUP_DSAP_MASK) ? 0 : 1) + +/* Command/response PDU indicator in SSAP field */ +#define LLC_PDU_CMD_RSP_MASK 0x01 +#define LLC_PDU_CMD 0 +#define LLC_PDU_RSP 1 +#define LLC_PDU_IS_CMD(pdu) ((pdu->ssap & LLC_PDU_RSP) ? 0 : 1) +#define LLC_PDU_IS_RSP(pdu) ((pdu->ssap & LLC_PDU_RSP) ? 1 : 0) + +/* Get PDU type from 2 lowest-order bits of control field first byte */ +#define LLC_PDU_TYPE_I_MASK 0x01 /* 16-bit control field */ +#define LLC_PDU_TYPE_S_MASK 0x03 +#define LLC_PDU_TYPE_U_MASK 0x03 /* 8-bit control field */ +#define LLC_PDU_TYPE_MASK 0x03 + +#define LLC_PDU_TYPE_I 0 /* first bit */ +#define LLC_PDU_TYPE_S 1 /* first two bits */ +#define LLC_PDU_TYPE_U 3 /* first two bits */ + +#define LLC_PDU_TYPE_IS_I(pdu) \ + ((!(pdu->ctrl_1 & LLC_PDU_TYPE_I_MASK)) ? 1 : 0) + +#define LLC_PDU_TYPE_IS_U(pdu) \ + (((pdu->ctrl_1 & LLC_PDU_TYPE_U_MASK) == LLC_PDU_TYPE_U) ? 1 : 0) + +#define LLC_PDU_TYPE_IS_S(pdu) \ + (((pdu->ctrl_1 & LLC_PDU_TYPE_S_MASK) == LLC_PDU_TYPE_S) ? 1 : 0) + +/* U-format PDU control field masks */ +#define LLC_U_PF_BIT_MASK 0x10 /* P/F bit mask */ +#define LLC_U_PF_IS_1(pdu) ((pdu->ctrl_1 & LLC_U_PF_BIT_MASK) ? 1 : 0) +#define LLC_U_PF_IS_0(pdu) ((!(pdu->ctrl_1 & LLC_U_PF_BIT_MASK)) ? 1 : 0) + +#define LLC_U_PDU_CMD_MASK 0xEC /* cmd/rsp mask */ +#define LLC_U_PDU_CMD(pdu) (pdu->ctrl_1 & LLC_U_PDU_CMD_MASK) +#define LLC_U_PDU_RSP(pdu) (pdu->ctrl_1 & LLC_U_PDU_CMD_MASK) + +#define LLC_1_PDU_CMD_UI 0x00 /* Type 1 cmds/rsps */ +#define LLC_1_PDU_CMD_XID 0xAC +#define LLC_1_PDU_CMD_TEST 0xE0 + +#define LLC_2_PDU_CMD_SABME 0x6C /* Type 2 cmds/rsps */ +#define LLC_2_PDU_CMD_DISC 0x40 +#define LLC_2_PDU_RSP_UA 0x60 +#define LLC_2_PDU_RSP_DM 0x0C +#define LLC_2_PDU_RSP_FRMR 0x84 + +/* Type 1 operations */ + +/* XID information field bit masks */ + +/* LLC format identifier (byte 1) */ +#define LLC_XID_FMT_ID 0x81 /* first byte must be this */ + +/* LLC types/classes identifier (byte 2) */ +#define LLC_XID_CLASS_ZEROS_MASK 0xE0 /* these must be zeros */ +#define LLC_XID_CLASS_MASK 0x1F /* AND with byte to get below */ + +#define LLC_XID_NULL_CLASS_1 0x01 /* if NULL LSAP...use these */ +#define LLC_XID_NULL_CLASS_2 0x03 +#define LLC_XID_NULL_CLASS_3 0x05 +#define LLC_XID_NULL_CLASS_4 0x07 + +#define LLC_XID_NNULL_TYPE_1 0x01 /* if non-NULL LSAP...use these */ +#define LLC_XID_NNULL_TYPE_2 0x02 +#define LLC_XID_NNULL_TYPE_3 0x04 +#define LLC_XID_NNULL_TYPE_1_2 0x03 +#define LLC_XID_NNULL_TYPE_1_3 0x05 +#define LLC_XID_NNULL_TYPE_2_3 0x06 +#define LLC_XID_NNULL_ALL 0x07 + +/* Sender Receive Window (byte 3) */ +#define LLC_XID_RW_MASK 0xFE /* AND with value to get below */ + +#define LLC_XID_MIN_RW 0x02 /* lowest-order bit always zero */ + +/* Type 2 operations */ + +#define LLC_2_SEQ_NBR_MODULO ((u8) 128) + +/* I-PDU masks ('ctrl' is I-PDU control word) */ +#define LLC_I_GET_NS(pdu) (u8)((pdu->ctrl_1 & 0xFE) >> 1) +#define LLC_I_GET_NR(pdu) (u8)((pdu->ctrl_2 & 0xFE) >> 1) + +#define LLC_I_PF_BIT_MASK 0x01 + +#define LLC_I_PF_IS_0(pdu) ((!(pdu->ctrl_2 & LLC_I_PF_BIT_MASK)) ? 1 : 0) +#define LLC_I_PF_IS_1(pdu) ((pdu->ctrl_2 & LLC_I_PF_BIT_MASK) ? 1 : 0) + +/* S-PDU supervisory commands and responses */ + +#define LLC_S_PDU_CMD_MASK 0x0C +#define LLC_S_PDU_CMD(pdu) (pdu->ctrl_1 & LLC_S_PDU_CMD_MASK) +#define LLC_S_PDU_RSP(pdu) (pdu->ctrl_1 & LLC_S_PDU_CMD_MASK) + +#define LLC_2_PDU_CMD_RR 0x00 /* rx ready cmd */ +#define LLC_2_PDU_RSP_RR 0x00 /* rx ready rsp */ +#define LLC_2_PDU_CMD_REJ 0x08 /* reject PDU cmd */ +#define LLC_2_PDU_RSP_REJ 0x08 /* reject PDU rsp */ +#define LLC_2_PDU_CMD_RNR 0x04 /* rx not ready cmd */ +#define LLC_2_PDU_RSP_RNR 0x04 /* rx not ready rsp */ + +#define LLC_S_PF_BIT_MASK 0x01 +#define LLC_S_PF_IS_0(pdu) ((!(pdu->ctrl_2 & LLC_S_PF_BIT_MASK)) ? 1 : 0) +#define LLC_S_PF_IS_1(pdu) ((pdu->ctrl_2 & LLC_S_PF_BIT_MASK) ? 1 : 0) + +#define PDU_SUPV_GET_Nr(pdu) ((pdu->ctrl_2 & 0xFE) >> 1) +#define PDU_GET_NEXT_Vr(sn) (++sn & ~LLC_2_SEQ_NBR_MODULO) + +/* FRMR information field macros */ + +#define FRMR_INFO_LENGTH 5 /* 5 bytes of information */ + +/* + * info is pointer to FRMR info field structure; 'rej_ctrl' is byte pointer + * (if U-PDU) or word pointer to rejected PDU control field + */ +#define FRMR_INFO_SET_REJ_CNTRL(info,rej_ctrl) \ + info->rej_pdu_ctrl = ((*((u8 *) rej_ctrl) & \ + LLC_PDU_TYPE_U) != LLC_PDU_TYPE_U ? \ + (u16)*((u16 *) rej_ctrl) : \ + (((u16) *((u8 *) rej_ctrl)) & 0x00FF)) + +/* + * Info is pointer to FRMR info field structure; 'vs' is a byte containing + * send state variable value in low-order 7 bits (insure the lowest-order + * bit remains zero (0)) + */ +#define FRMR_INFO_SET_Vs(info,vs) (info->curr_ssv = (((u8) vs) << 1)) +#define FRMR_INFO_SET_Vr(info,vr) (info->curr_rsv = (((u8) vr) << 1)) + +/* + * Info is pointer to FRMR info field structure; 'cr' is a byte containing + * the C/R bit value in the low-order bit + */ +#define FRMR_INFO_SET_C_R_BIT(info, cr) (info->curr_rsv |= (((u8) cr) & 0x01)) + +/* + * In the remaining five macros, 'info' is pointer to FRMR info field + * structure; 'ind' is a byte containing the bit value to set in the + * lowest-order bit) + */ +#define FRMR_INFO_SET_INVALID_PDU_CTRL_IND(info, ind) \ + (info->ind_bits = ((info->ind_bits & 0xFE) | (((u8) ind) & 0x01))) + +#define FRMR_INFO_SET_INVALID_PDU_INFO_IND(info, ind) \ + (info->ind_bits = ( (info->ind_bits & 0xFD) | (((u8) ind) & 0x02))) + +#define FRMR_INFO_SET_PDU_INFO_2LONG_IND(info, ind) \ + (info->ind_bits = ( (info->ind_bits & 0xFB) | (((u8) ind) & 0x04))) + +#define FRMR_INFO_SET_PDU_INVALID_Nr_IND(info, ind) \ + (info->ind_bits = ( (info->ind_bits & 0xF7) | (((u8) ind) & 0x08))) + +#define FRMR_INFO_SET_PDU_INVALID_Ns_IND(info, ind) \ + (info->ind_bits = ( (info->ind_bits & 0xEF) | (((u8) ind) & 0x10))) + +/* Sequence-numbered PDU format (4 bytes in length) */ +struct llc_pdu_sn { + u8 dsap; + u8 ssap; + u8 ctrl_1; + u8 ctrl_2; +}; + +static inline struct llc_pdu_sn *llc_pdu_sn_hdr(struct sk_buff *skb) +{ + return (struct llc_pdu_sn *)skb->nh.raw; +} + +/* Un-numbered PDU format (3 bytes in length) */ +struct llc_pdu_un { + u8 dsap; + u8 ssap; + u8 ctrl_1; +}; + +static inline struct llc_pdu_un *llc_pdu_un_hdr(struct sk_buff *skb) +{ + return (struct llc_pdu_un *)skb->nh.raw; +} + +static inline void *llc_set_pdu_hdr(struct sk_buff *skb, void *ptr) +{ + return skb->nh.raw = ptr; +} + +/** + * llc_pdu_header_init - initializes pdu header + * @skb: input skb that header must be set into it. + * @type: type of PDU (U, I or S). + * @ssap: source sap. + * @dsap: destination sap. + * @cr: command/response bit (0 or 1). + * + * This function sets DSAP, SSAP and command/Response bit in LLC header. + */ +static inline void llc_pdu_header_init(struct sk_buff *skb, u8 type, + u8 ssap, u8 dsap, u8 cr) +{ + const int hlen = type == LLC_PDU_TYPE_U ? 3 : 4; + struct llc_pdu_un *pdu = llc_set_pdu_hdr(skb, skb_push(skb, hlen)); + pdu->dsap = dsap; + pdu->ssap = ssap; + pdu->ssap |= cr; +} + +/** + * llc_pdu_decode_sa - extracs source address (MAC) of input frame + * @skb: input skb that source address must be extracted from it. + * @sa: pointer to source address (6 byte array). + * + * This function extracts source address(MAC) of input frame. + */ +static inline void llc_pdu_decode_sa(struct sk_buff *skb, u8 *sa) +{ + if (skb->protocol == ntohs(ETH_P_802_2)) + memcpy(sa, eth_hdr(skb)->h_source, ETH_ALEN); + else if (skb->protocol == ntohs(ETH_P_TR_802_2)) + memcpy(sa, tr_hdr(skb)->saddr, ETH_ALEN); +} + +/** + * llc_pdu_decode_da - extracts dest address of input frame + * @skb: input skb that destination address must be extracted from it + * @sa: pointer to destination address (6 byte array). + * + * This function extracts destination address(MAC) of input frame. + */ +static inline void llc_pdu_decode_da(struct sk_buff *skb, u8 *da) +{ + if (skb->protocol == ntohs(ETH_P_802_2)) + memcpy(da, eth_hdr(skb)->h_dest, ETH_ALEN); + else if (skb->protocol == ntohs(ETH_P_TR_802_2)) + memcpy(da, tr_hdr(skb)->daddr, ETH_ALEN); +} + +/** + * llc_pdu_decode_ssap - extracts source SAP of input frame + * @skb: input skb that source SAP must be extracted from it. + * @ssap: source SAP (output argument). + * + * This function extracts source SAP of input frame. Right bit of SSAP is + * command/response bit. + */ +static inline void llc_pdu_decode_ssap(struct sk_buff *skb, u8 *ssap) +{ + *ssap = llc_pdu_un_hdr(skb)->ssap & 0xFE; +} + +/** + * llc_pdu_decode_dsap - extracts dest SAP of input frame + * @skb: input skb that destination SAP must be extracted from it. + * @dsap: destination SAP (output argument). + * + * This function extracts destination SAP of input frame. right bit of + * DSAP designates individual/group SAP. + */ +static inline void llc_pdu_decode_dsap(struct sk_buff *skb, u8 *dsap) +{ + *dsap = llc_pdu_un_hdr(skb)->dsap & 0xFE; +} + +/** + * llc_pdu_init_as_ui_cmd - sets LLC header as UI PDU + * @skb: input skb that header must be set into it. + * + * This function sets third byte of LLC header as a UI PDU. + */ +static inline void llc_pdu_init_as_ui_cmd(struct sk_buff *skb) +{ + struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb); + + pdu->ctrl_1 = LLC_PDU_TYPE_U; + pdu->ctrl_1 |= LLC_1_PDU_CMD_UI; +} + +/** + * llc_pdu_init_as_test_cmd - sets PDU as TEST + * @skb - Address of the skb to build + * + * Sets a PDU as TEST + */ +static inline void llc_pdu_init_as_test_cmd(struct sk_buff *skb) +{ + struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb); + + pdu->ctrl_1 = LLC_PDU_TYPE_U; + pdu->ctrl_1 |= LLC_1_PDU_CMD_TEST; + pdu->ctrl_1 |= LLC_U_PF_BIT_MASK; +} + +/** + * llc_pdu_init_as_test_rsp - build TEST response PDU + * @skb: Address of the skb to build + * @ev_skb: The received TEST command PDU frame + * + * Builds a pdu frame as a TEST response. + */ +static inline void llc_pdu_init_as_test_rsp(struct sk_buff *skb, + struct sk_buff *ev_skb) +{ + struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb); + + pdu->ctrl_1 = LLC_PDU_TYPE_U; + pdu->ctrl_1 |= LLC_1_PDU_CMD_TEST; + pdu->ctrl_1 |= LLC_U_PF_BIT_MASK; + if (ev_skb->protocol == ntohs(ETH_P_802_2)) { + struct llc_pdu_un *ev_pdu = llc_pdu_un_hdr(ev_skb); + int dsize; + + dsize = ntohs(eth_hdr(ev_skb)->h_proto) - 3; + memcpy(((u8 *)pdu) + 3, ((u8 *)ev_pdu) + 3, dsize); + skb_put(skb, dsize); + } +} + +/* LLC Type 1 XID command/response information fields format */ +struct llc_xid_info { + u8 fmt_id; /* always 0x18 for LLC */ + u8 type; /* different if NULL/non-NULL LSAP */ + u8 rw; /* sender receive window */ +}; + +/** + * llc_pdu_init_as_xid_cmd - sets bytes 3, 4 & 5 of LLC header as XID + * @skb: input skb that header must be set into it. + * + * This function sets third,fourth,fifth and sixth bytes of LLC header as + * a XID PDU. + */ +static inline void llc_pdu_init_as_xid_cmd(struct sk_buff *skb, + u8 svcs_supported, u8 rx_window) +{ + struct llc_xid_info *xid_info; + struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb); + + pdu->ctrl_1 = LLC_PDU_TYPE_U; + pdu->ctrl_1 |= LLC_1_PDU_CMD_XID; + pdu->ctrl_1 |= LLC_U_PF_BIT_MASK; + xid_info = (struct llc_xid_info *)(((u8 *)&pdu->ctrl_1) + 1); + xid_info->fmt_id = LLC_XID_FMT_ID; /* 0x81 */ + xid_info->type = svcs_supported; + xid_info->rw = rx_window << 1; /* size of receive window */ + skb_put(skb, 3); +} + +/** + * llc_pdu_init_as_xid_rsp - builds XID response PDU + * @skb: Address of the skb to build + * @svcs_supported: The class of the LLC (I or II) + * @rx_window: The size of the receive window of the LLC + * + * Builds a pdu frame as an XID response. + */ +static inline void llc_pdu_init_as_xid_rsp(struct sk_buff *skb, + u8 svcs_supported, u8 rx_window) +{ + struct llc_xid_info *xid_info; + struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb); + + pdu->ctrl_1 = LLC_PDU_TYPE_U; + pdu->ctrl_1 |= LLC_1_PDU_CMD_XID; + pdu->ctrl_1 |= LLC_U_PF_BIT_MASK; + + xid_info = (struct llc_xid_info *)(((u8 *)&pdu->ctrl_1) + 1); + xid_info->fmt_id = LLC_XID_FMT_ID; + xid_info->type = svcs_supported; + xid_info->rw = rx_window << 1; + skb_put(skb, 3); +} + +/* LLC Type 2 FRMR response information field format */ +struct llc_frmr_info { + u16 rej_pdu_ctrl; /* bits 1-8 if U-PDU */ + u8 curr_ssv; /* current send state variable val */ + u8 curr_rsv; /* current receive state variable */ + u8 ind_bits; /* indicator bits set with macro */ +}; + +extern void llc_pdu_set_cmd_rsp(struct sk_buff *skb, u8 type); +extern void llc_pdu_set_pf_bit(struct sk_buff *skb, u8 bit_value); +extern void llc_pdu_decode_pf_bit(struct sk_buff *skb, u8 *pf_bit); +extern void llc_pdu_init_as_disc_cmd(struct sk_buff *skb, u8 p_bit); +extern void llc_pdu_init_as_i_cmd(struct sk_buff *skb, u8 p_bit, u8 ns, u8 nr); +extern void llc_pdu_init_as_rej_cmd(struct sk_buff *skb, u8 p_bit, u8 nr); +extern void llc_pdu_init_as_rnr_cmd(struct sk_buff *skb, u8 p_bit, u8 nr); +extern void llc_pdu_init_as_rr_cmd(struct sk_buff *skb, u8 p_bit, u8 nr); +extern void llc_pdu_init_as_sabme_cmd(struct sk_buff *skb, u8 p_bit); +extern void llc_pdu_init_as_dm_rsp(struct sk_buff *skb, u8 f_bit); +extern void llc_pdu_init_as_frmr_rsp(struct sk_buff *skb, + struct llc_pdu_sn *prev_pdu, + u8 f_bit, u8 vs, u8 vr, u8 vzyxw); +extern void llc_pdu_init_as_rr_rsp(struct sk_buff *skb, u8 f_bit, u8 nr); +extern void llc_pdu_init_as_rej_rsp(struct sk_buff *skb, u8 f_bit, u8 nr); +extern void llc_pdu_init_as_rnr_rsp(struct sk_buff *skb, u8 f_bit, u8 nr); +extern void llc_pdu_init_as_ua_rsp(struct sk_buff *skb, u8 f_bit); +#endif /* LLC_PDU_H */ diff --git a/include/net/llc_s_ac.h b/include/net/llc_s_ac.h new file mode 100644 index 000000000000..37a3bbd02394 --- /dev/null +++ b/include/net/llc_s_ac.h @@ -0,0 +1,39 @@ +#ifndef LLC_S_AC_H +#define LLC_S_AC_H +/* + * Copyright (c) 1997 by Procom Technology,Inc. + * 2001 by Arnaldo Carvalho de Melo <acme@conectiva.com.br> + * + * This program can be redistributed or modified under the terms of the + * GNU General Public License as published by the Free Software Foundation. + * This program is distributed without any warranty or implied warranty + * of merchantability or fitness for a particular purpose. + * + * See the GNU General Public License for more details. + */ +/* SAP component actions */ +#define SAP_ACT_UNITDATA_IND 1 +#define SAP_ACT_SEND_UI 2 +#define SAP_ACT_SEND_XID_C 3 +#define SAP_ACT_SEND_XID_R 4 +#define SAP_ACT_SEND_TEST_C 5 +#define SAP_ACT_SEND_TEST_R 6 +#define SAP_ACT_REPORT_STATUS 7 +#define SAP_ACT_XID_IND 8 +#define SAP_ACT_TEST_IND 9 + +/* All action functions must look like this */ +typedef int (*llc_sap_action_t)(struct llc_sap *sap, struct sk_buff *skb); + +extern int llc_sap_action_unitdata_ind(struct llc_sap *sap, + struct sk_buff *skb); +extern int llc_sap_action_send_ui(struct llc_sap *sap, struct sk_buff *skb); +extern int llc_sap_action_send_xid_c(struct llc_sap *sap, struct sk_buff *skb); +extern int llc_sap_action_send_xid_r(struct llc_sap *sap, struct sk_buff *skb); +extern int llc_sap_action_send_test_c(struct llc_sap *sap, struct sk_buff *skb); +extern int llc_sap_action_send_test_r(struct llc_sap *sap, struct sk_buff *skb); +extern int llc_sap_action_report_status(struct llc_sap *sap, + struct sk_buff *skb); +extern int llc_sap_action_xid_ind(struct llc_sap *sap, struct sk_buff *skb); +extern int llc_sap_action_test_ind(struct llc_sap *sap, struct sk_buff *skb); +#endif /* LLC_S_AC_H */ diff --git a/include/net/llc_s_ev.h b/include/net/llc_s_ev.h new file mode 100644 index 000000000000..e3acb9329e4a --- /dev/null +++ b/include/net/llc_s_ev.h @@ -0,0 +1,67 @@ +#ifndef LLC_S_EV_H +#define LLC_S_EV_H +/* + * Copyright (c) 1997 by Procom Technology,Inc. + * 2001 by Arnaldo Carvalho de Melo <acme@conectiva.com.br> + * + * This program can be redistributed or modified under the terms of the + * GNU General Public License as published by the Free Software Foundation. + * This program is distributed without any warranty or implied warranty + * of merchantability or fitness for a particular purpose. + * + * See the GNU General Public License for more details. + */ + +#include <linux/skbuff.h> + +/* Defines SAP component events */ +/* Types of events (possible values in 'ev->type') */ +#define LLC_SAP_EV_TYPE_SIMPLE 1 +#define LLC_SAP_EV_TYPE_CONDITION 2 +#define LLC_SAP_EV_TYPE_PRIM 3 +#define LLC_SAP_EV_TYPE_PDU 4 /* command/response PDU */ +#define LLC_SAP_EV_TYPE_ACK_TMR 5 +#define LLC_SAP_EV_TYPE_RPT_STATUS 6 + +#define LLC_SAP_EV_ACTIVATION_REQ 1 +#define LLC_SAP_EV_RX_UI 2 +#define LLC_SAP_EV_UNITDATA_REQ 3 +#define LLC_SAP_EV_XID_REQ 4 +#define LLC_SAP_EV_RX_XID_C 5 +#define LLC_SAP_EV_RX_XID_R 6 +#define LLC_SAP_EV_TEST_REQ 7 +#define LLC_SAP_EV_RX_TEST_C 8 +#define LLC_SAP_EV_RX_TEST_R 9 +#define LLC_SAP_EV_DEACTIVATION_REQ 10 + +struct llc_sap_state_ev { + u8 prim; + u8 prim_type; + u8 type; + u8 reason; + u8 ind_cfm_flag; + struct llc_addr saddr; + struct llc_addr daddr; +}; + +static __inline__ struct llc_sap_state_ev *llc_sap_ev(struct sk_buff *skb) +{ + return (struct llc_sap_state_ev *)skb->cb; +} + +struct llc_sap; + +typedef int (*llc_sap_ev_t)(struct llc_sap *sap, struct sk_buff *skb); + +extern int llc_sap_ev_activation_req(struct llc_sap *sap, struct sk_buff *skb); +extern int llc_sap_ev_rx_ui(struct llc_sap *sap, struct sk_buff *skb); +extern int llc_sap_ev_unitdata_req(struct llc_sap *sap, struct sk_buff *skb); +extern int llc_sap_ev_xid_req(struct llc_sap *sap, struct sk_buff *skb); +extern int llc_sap_ev_rx_xid_c(struct llc_sap *sap, struct sk_buff *skb); +extern int llc_sap_ev_rx_xid_r(struct llc_sap *sap, struct sk_buff *skb); +extern int llc_sap_ev_test_req(struct llc_sap *sap, struct sk_buff *skb); +extern int llc_sap_ev_rx_test_c(struct llc_sap *sap, struct sk_buff *skb); +extern int llc_sap_ev_rx_test_r(struct llc_sap *sap, struct sk_buff *skb); +extern int llc_sap_ev_deactivation_req(struct llc_sap *sap, + struct sk_buff *skb); +#endif /* LLC_S_EV_H */ diff --git a/include/net/llc_s_st.h b/include/net/llc_s_st.h new file mode 100644 index 000000000000..567c681f1f3e --- /dev/null +++ b/include/net/llc_s_st.h @@ -0,0 +1,32 @@ +#ifndef LLC_S_ST_H +#define LLC_S_ST_H +/* + * Copyright (c) 1997 by Procom Technology,Inc. + * 2001 by Arnaldo Carvalho de Melo <acme@conectiva.com.br> + * + * This program can be redistributed or modified under the terms of the + * GNU General Public License as published by the Free Software Foundation. + * This program is distributed without any warranty or implied warranty + * of merchantability or fitness for a particular purpose. + * + * See the GNU General Public License for more details. + */ + +#define LLC_NR_SAP_STATES 2 /* size of state table */ + +/* structures and types */ +/* SAP state table structure */ +struct llc_sap_state_trans { + llc_sap_ev_t ev; + u8 next_state; + llc_sap_action_t *ev_actions; +}; + +struct llc_sap_state { + u8 curr_state; + struct llc_sap_state_trans **transitions; +}; + +/* only access to SAP state table */ +extern struct llc_sap_state llc_sap_state_table[LLC_NR_SAP_STATES]; +#endif /* LLC_S_ST_H */ diff --git a/include/net/llc_sap.h b/include/net/llc_sap.h new file mode 100644 index 000000000000..353baaa627f3 --- /dev/null +++ b/include/net/llc_sap.h @@ -0,0 +1,29 @@ +#ifndef LLC_SAP_H +#define LLC_SAP_H +/* + * Copyright (c) 1997 by Procom Technology,Inc. + * 2001-2003 by Arnaldo Carvalho de Melo <acme@conectiva.com.br> + * + * This program can be redistributed or modified under the terms of the + * GNU General Public License as published by the Free Software Foundation. + * This program is distributed without any warranty or implied warranty + * of merchantability or fitness for a particular purpose. + * + * See the GNU General Public License for more details. + */ +struct llc_sap; +struct sk_buff; + +extern void llc_sap_rtn_pdu(struct llc_sap *sap, struct sk_buff *skb); +extern void llc_save_primitive(struct sk_buff* skb, unsigned char prim); +extern struct sk_buff *llc_alloc_frame(void); + +extern void llc_build_and_send_test_pkt(struct llc_sap *sap, + struct sk_buff *skb, + unsigned char *dmac, + unsigned char dsap); +extern void llc_build_and_send_xid_pkt(struct llc_sap *sap, + struct sk_buff *skb, + unsigned char *dmac, + unsigned char dsap); +#endif /* LLC_SAP_H */ diff --git a/include/net/ndisc.h b/include/net/ndisc.h new file mode 100644 index 000000000000..f85d6e4b7442 --- /dev/null +++ b/include/net/ndisc.h @@ -0,0 +1,135 @@ +#ifndef _NDISC_H +#define _NDISC_H + +/* + * ICMP codes for neighbour discovery messages + */ + +#define NDISC_ROUTER_SOLICITATION 133 +#define NDISC_ROUTER_ADVERTISEMENT 134 +#define NDISC_NEIGHBOUR_SOLICITATION 135 +#define NDISC_NEIGHBOUR_ADVERTISEMENT 136 +#define NDISC_REDIRECT 137 + +/* + * ndisc options + */ + +enum { + __ND_OPT_PREFIX_INFO_END = 0, + ND_OPT_SOURCE_LL_ADDR = 1, /* RFC2461 */ + ND_OPT_TARGET_LL_ADDR = 2, /* RFC2461 */ + ND_OPT_PREFIX_INFO = 3, /* RFC2461 */ + ND_OPT_REDIRECT_HDR = 4, /* RFC2461 */ + ND_OPT_MTU = 5, /* RFC2461 */ + __ND_OPT_MAX +}; + +#define MAX_RTR_SOLICITATION_DELAY HZ + +#define ND_REACHABLE_TIME (30*HZ) +#define ND_RETRANS_TIMER HZ + +#define ND_MIN_RANDOM_FACTOR (1/2) +#define ND_MAX_RANDOM_FACTOR (3/2) + +#ifdef __KERNEL__ + +#include <linux/skbuff.h> +#include <linux/netdevice.h> +#include <linux/icmpv6.h> +#include <net/neighbour.h> +#include <asm/atomic.h> + +extern struct neigh_table nd_tbl; + +struct nd_msg { + struct icmp6hdr icmph; + struct in6_addr target; + __u8 opt[0]; +}; + +struct rs_msg { + struct icmp6hdr icmph; + __u8 opt[0]; +}; + +struct ra_msg { + struct icmp6hdr icmph; + __u32 reachable_time; + __u32 retrans_timer; +}; + +struct nd_opt_hdr { + __u8 nd_opt_type; + __u8 nd_opt_len; +} __attribute__((__packed__)); + + +extern int ndisc_init(struct net_proto_family *ops); + +extern void ndisc_cleanup(void); + +extern int ndisc_rcv(struct sk_buff *skb); + +extern void ndisc_send_ns(struct net_device *dev, + struct neighbour *neigh, + struct in6_addr *solicit, + struct in6_addr *daddr, + struct in6_addr *saddr); + +extern void ndisc_send_rs(struct net_device *dev, + struct in6_addr *saddr, + struct in6_addr *daddr); + +extern void ndisc_forwarding_on(void); +extern void ndisc_forwarding_off(void); + +extern void ndisc_send_redirect(struct sk_buff *skb, + struct neighbour *neigh, + struct in6_addr *target); + +extern int ndisc_mc_map(struct in6_addr *addr, char *buf, struct net_device *dev, int dir); + + +struct rt6_info * dflt_rt_lookup(void); + +/* + * IGMP + */ +extern int igmp6_init(struct net_proto_family *ops); + +extern void igmp6_cleanup(void); + +extern int igmp6_event_query(struct sk_buff *skb); + +extern int igmp6_event_report(struct sk_buff *skb); + +extern void igmp6_cleanup(void); + +#ifdef CONFIG_SYSCTL +extern int ndisc_ifinfo_sysctl_change(ctl_table *ctl, + int write, + struct file * filp, + void __user *buffer, + size_t *lenp, + loff_t *ppos); +#endif + +extern void inet6_ifinfo_notify(int event, + struct inet6_dev *idev); + +static inline struct neighbour * ndisc_get_neigh(struct net_device *dev, struct in6_addr *addr) +{ + + if (dev) + return __neigh_lookup(&nd_tbl, addr, dev, 1); + + return NULL; +} + + +#endif /* __KERNEL__ */ + + +#endif diff --git a/include/net/neighbour.h b/include/net/neighbour.h new file mode 100644 index 000000000000..4f33bbc21e7f --- /dev/null +++ b/include/net/neighbour.h @@ -0,0 +1,370 @@ +#ifndef _NET_NEIGHBOUR_H +#define _NET_NEIGHBOUR_H + +/* + * Generic neighbour manipulation + * + * Authors: + * Pedro Roque <roque@di.fc.ul.pt> + * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> + * + * Changes: + * + * Harald Welte: <laforge@gnumonks.org> + * - Add neighbour cache statistics like rtstat + */ + +/* The following flags & states are exported to user space, + so that they should be moved to include/linux/ directory. + */ + +/* + * Neighbor Cache Entry Flags + */ + +#define NTF_PROXY 0x08 /* == ATF_PUBL */ +#define NTF_ROUTER 0x80 + +/* + * Neighbor Cache Entry States. + */ + +#define NUD_INCOMPLETE 0x01 +#define NUD_REACHABLE 0x02 +#define NUD_STALE 0x04 +#define NUD_DELAY 0x08 +#define NUD_PROBE 0x10 +#define NUD_FAILED 0x20 + +/* Dummy states */ +#define NUD_NOARP 0x40 +#define NUD_PERMANENT 0x80 +#define NUD_NONE 0x00 + +/* NUD_NOARP & NUD_PERMANENT are pseudostates, they never change + and make no address resolution or NUD. + NUD_PERMANENT is also cannot be deleted by garbage collectors. + */ + +#ifdef __KERNEL__ + +#include <asm/atomic.h> +#include <linux/skbuff.h> +#include <linux/netdevice.h> +#include <linux/rcupdate.h> +#include <linux/seq_file.h> + +#include <linux/err.h> +#include <linux/sysctl.h> + +#define NUD_IN_TIMER (NUD_INCOMPLETE|NUD_REACHABLE|NUD_DELAY|NUD_PROBE) +#define NUD_VALID (NUD_PERMANENT|NUD_NOARP|NUD_REACHABLE|NUD_PROBE|NUD_STALE|NUD_DELAY) +#define NUD_CONNECTED (NUD_PERMANENT|NUD_NOARP|NUD_REACHABLE) + +struct neighbour; + +struct neigh_parms +{ + struct neigh_parms *next; + int (*neigh_setup)(struct neighbour *); + struct neigh_table *tbl; + int entries; + void *priv; + + void *sysctl_table; + + int dead; + atomic_t refcnt; + struct rcu_head rcu_head; + + int base_reachable_time; + int retrans_time; + int gc_staletime; + int reachable_time; + int delay_probe_time; + + int queue_len; + int ucast_probes; + int app_probes; + int mcast_probes; + int anycast_delay; + int proxy_delay; + int proxy_qlen; + int locktime; +}; + +struct neigh_statistics +{ + unsigned long allocs; /* number of allocated neighs */ + unsigned long destroys; /* number of destroyed neighs */ + unsigned long hash_grows; /* number of hash resizes */ + + unsigned long res_failed; /* nomber of failed resolutions */ + + unsigned long lookups; /* number of lookups */ + unsigned long hits; /* number of hits (among lookups) */ + + unsigned long rcv_probes_mcast; /* number of received mcast ipv6 */ + unsigned long rcv_probes_ucast; /* number of received ucast ipv6 */ + + unsigned long periodic_gc_runs; /* number of periodic GC runs */ + unsigned long forced_gc_runs; /* number of forced GC runs */ +}; + +#define NEIGH_CACHE_STAT_INC(tbl, field) \ + do { \ + preempt_disable(); \ + (per_cpu_ptr((tbl)->stats, smp_processor_id())->field)++; \ + preempt_enable(); \ + } while (0) + +struct neighbour +{ + struct neighbour *next; + struct neigh_table *tbl; + struct neigh_parms *parms; + struct net_device *dev; + unsigned long used; + unsigned long confirmed; + unsigned long updated; + __u8 flags; + __u8 nud_state; + __u8 type; + __u8 dead; + atomic_t probes; + rwlock_t lock; + unsigned char ha[(MAX_ADDR_LEN+sizeof(unsigned long)-1)&~(sizeof(unsigned long)-1)]; + struct hh_cache *hh; + atomic_t refcnt; + int (*output)(struct sk_buff *skb); + struct sk_buff_head arp_queue; + struct timer_list timer; + struct neigh_ops *ops; + u8 primary_key[0]; +}; + +struct neigh_ops +{ + int family; + void (*destructor)(struct neighbour *); + void (*solicit)(struct neighbour *, struct sk_buff*); + void (*error_report)(struct neighbour *, struct sk_buff*); + int (*output)(struct sk_buff*); + int (*connected_output)(struct sk_buff*); + int (*hh_output)(struct sk_buff*); + int (*queue_xmit)(struct sk_buff*); +}; + +struct pneigh_entry +{ + struct pneigh_entry *next; + struct net_device *dev; + u8 key[0]; +}; + +/* + * neighbour table manipulation + */ + + +struct neigh_table +{ + struct neigh_table *next; + int family; + int entry_size; + int key_len; + __u32 (*hash)(const void *pkey, const struct net_device *); + int (*constructor)(struct neighbour *); + int (*pconstructor)(struct pneigh_entry *); + void (*pdestructor)(struct pneigh_entry *); + void (*proxy_redo)(struct sk_buff *skb); + char *id; + struct neigh_parms parms; + /* HACK. gc_* shoul follow parms without a gap! */ + int gc_interval; + int gc_thresh1; + int gc_thresh2; + int gc_thresh3; + unsigned long last_flush; + struct timer_list gc_timer; + struct timer_list proxy_timer; + struct sk_buff_head proxy_queue; + atomic_t entries; + rwlock_t lock; + unsigned long last_rand; + struct neigh_parms *parms_list; + kmem_cache_t *kmem_cachep; + struct neigh_statistics *stats; + struct neighbour **hash_buckets; + unsigned int hash_mask; + __u32 hash_rnd; + unsigned int hash_chain_gc; + struct pneigh_entry **phash_buckets; +#ifdef CONFIG_PROC_FS + struct proc_dir_entry *pde; +#endif +}; + +/* flags for neigh_update() */ +#define NEIGH_UPDATE_F_OVERRIDE 0x00000001 +#define NEIGH_UPDATE_F_WEAK_OVERRIDE 0x00000002 +#define NEIGH_UPDATE_F_OVERRIDE_ISROUTER 0x00000004 +#define NEIGH_UPDATE_F_ISROUTER 0x40000000 +#define NEIGH_UPDATE_F_ADMIN 0x80000000 + +extern void neigh_table_init(struct neigh_table *tbl); +extern int neigh_table_clear(struct neigh_table *tbl); +extern struct neighbour * neigh_lookup(struct neigh_table *tbl, + const void *pkey, + struct net_device *dev); +extern struct neighbour * neigh_lookup_nodev(struct neigh_table *tbl, + const void *pkey); +extern struct neighbour * neigh_create(struct neigh_table *tbl, + const void *pkey, + struct net_device *dev); +extern void neigh_destroy(struct neighbour *neigh); +extern int __neigh_event_send(struct neighbour *neigh, struct sk_buff *skb); +extern int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new, + u32 flags); +extern void neigh_changeaddr(struct neigh_table *tbl, struct net_device *dev); +extern int neigh_ifdown(struct neigh_table *tbl, struct net_device *dev); +extern int neigh_resolve_output(struct sk_buff *skb); +extern int neigh_connected_output(struct sk_buff *skb); +extern int neigh_compat_output(struct sk_buff *skb); +extern struct neighbour *neigh_event_ns(struct neigh_table *tbl, + u8 *lladdr, void *saddr, + struct net_device *dev); + +extern struct neigh_parms *neigh_parms_alloc(struct net_device *dev, struct neigh_table *tbl); +extern void neigh_parms_release(struct neigh_table *tbl, struct neigh_parms *parms); +extern void neigh_parms_destroy(struct neigh_parms *parms); +extern unsigned long neigh_rand_reach_time(unsigned long base); + +extern void pneigh_enqueue(struct neigh_table *tbl, struct neigh_parms *p, + struct sk_buff *skb); +extern struct pneigh_entry *pneigh_lookup(struct neigh_table *tbl, const void *key, struct net_device *dev, int creat); +extern int pneigh_delete(struct neigh_table *tbl, const void *key, struct net_device *dev); + +struct netlink_callback; +struct nlmsghdr; +extern int neigh_dump_info(struct sk_buff *skb, struct netlink_callback *cb); +extern int neigh_add(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg); +extern int neigh_delete(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg); +extern void neigh_app_ns(struct neighbour *n); + +extern void neigh_for_each(struct neigh_table *tbl, void (*cb)(struct neighbour *, void *), void *cookie); +extern void __neigh_for_each_release(struct neigh_table *tbl, int (*cb)(struct neighbour *)); +extern void pneigh_for_each(struct neigh_table *tbl, void (*cb)(struct pneigh_entry *)); + +struct neigh_seq_state { + struct neigh_table *tbl; + void *(*neigh_sub_iter)(struct neigh_seq_state *state, + struct neighbour *n, loff_t *pos); + unsigned int bucket; + unsigned int flags; +#define NEIGH_SEQ_NEIGH_ONLY 0x00000001 +#define NEIGH_SEQ_IS_PNEIGH 0x00000002 +#define NEIGH_SEQ_SKIP_NOARP 0x00000004 +}; +extern void *neigh_seq_start(struct seq_file *, loff_t *, struct neigh_table *, unsigned int); +extern void *neigh_seq_next(struct seq_file *, void *, loff_t *); +extern void neigh_seq_stop(struct seq_file *, void *); + +extern int neigh_sysctl_register(struct net_device *dev, + struct neigh_parms *p, + int p_id, int pdev_id, + char *p_name, + proc_handler *proc_handler, + ctl_handler *strategy); +extern void neigh_sysctl_unregister(struct neigh_parms *p); + +static inline void __neigh_parms_put(struct neigh_parms *parms) +{ + atomic_dec(&parms->refcnt); +} + +static inline void neigh_parms_put(struct neigh_parms *parms) +{ + if (atomic_dec_and_test(&parms->refcnt)) + neigh_parms_destroy(parms); +} + +static inline struct neigh_parms *neigh_parms_clone(struct neigh_parms *parms) +{ + atomic_inc(&parms->refcnt); + return parms; +} + +/* + * Neighbour references + */ + +static inline void neigh_release(struct neighbour *neigh) +{ + if (atomic_dec_and_test(&neigh->refcnt)) + neigh_destroy(neigh); +} + +static inline struct neighbour * neigh_clone(struct neighbour *neigh) +{ + if (neigh) + atomic_inc(&neigh->refcnt); + return neigh; +} + +#define neigh_hold(n) atomic_inc(&(n)->refcnt) + +static inline void neigh_confirm(struct neighbour *neigh) +{ + if (neigh) + neigh->confirmed = jiffies; +} + +static inline int neigh_is_connected(struct neighbour *neigh) +{ + return neigh->nud_state&NUD_CONNECTED; +} + +static inline int neigh_is_valid(struct neighbour *neigh) +{ + return neigh->nud_state&NUD_VALID; +} + +static inline int neigh_event_send(struct neighbour *neigh, struct sk_buff *skb) +{ + neigh->used = jiffies; + if (!(neigh->nud_state&(NUD_CONNECTED|NUD_DELAY|NUD_PROBE))) + return __neigh_event_send(neigh, skb); + return 0; +} + +static inline struct neighbour * +__neigh_lookup(struct neigh_table *tbl, const void *pkey, struct net_device *dev, int creat) +{ + struct neighbour *n = neigh_lookup(tbl, pkey, dev); + + if (n || !creat) + return n; + + n = neigh_create(tbl, pkey, dev); + return IS_ERR(n) ? NULL : n; +} + +static inline struct neighbour * +__neigh_lookup_errno(struct neigh_table *tbl, const void *pkey, + struct net_device *dev) +{ + struct neighbour *n = neigh_lookup(tbl, pkey, dev); + + if (n) + return n; + + return neigh_create(tbl, pkey, dev); +} + +#define LOCALLY_ENQUEUED -2 + +#endif +#endif + + diff --git a/include/net/netrom.h b/include/net/netrom.h new file mode 100644 index 000000000000..45f2c7616d8b --- /dev/null +++ b/include/net/netrom.h @@ -0,0 +1,242 @@ +/* + * Declarations of NET/ROM type objects. + * + * Jonathan Naylor G4KLX 9/4/95 + */ + +#ifndef _NETROM_H +#define _NETROM_H +#include <linux/netrom.h> +#include <linux/list.h> +#include <net/sock.h> + +#define NR_NETWORK_LEN 15 +#define NR_TRANSPORT_LEN 5 + +#define NR_PROTO_IP 0x0C + +#define NR_PROTOEXT 0x00 +#define NR_CONNREQ 0x01 +#define NR_CONNACK 0x02 +#define NR_DISCREQ 0x03 +#define NR_DISCACK 0x04 +#define NR_INFO 0x05 +#define NR_INFOACK 0x06 + +#define NR_CHOKE_FLAG 0x80 +#define NR_NAK_FLAG 0x40 +#define NR_MORE_FLAG 0x20 + +/* Define Link State constants. */ +enum { + NR_STATE_0, + NR_STATE_1, + NR_STATE_2, + NR_STATE_3 +}; + +#define NR_COND_ACK_PENDING 0x01 +#define NR_COND_REJECT 0x02 +#define NR_COND_PEER_RX_BUSY 0x04 +#define NR_COND_OWN_RX_BUSY 0x08 + +#define NR_DEFAULT_T1 (120 * HZ) /* Outstanding frames - 120 seconds */ +#define NR_DEFAULT_T2 (5 * HZ) /* Response delay - 5 seconds */ +#define NR_DEFAULT_N2 3 /* Number of Retries - 3 */ +#define NR_DEFAULT_T4 (180 * HZ) /* Busy Delay - 180 seconds */ +#define NR_DEFAULT_IDLE (0 * 60 * HZ) /* No Activity Timeout - none */ +#define NR_DEFAULT_WINDOW 4 /* Default Window Size - 4 */ +#define NR_DEFAULT_OBS 6 /* Default Obsolescence Count - 6 */ +#define NR_DEFAULT_QUAL 10 /* Default Neighbour Quality - 10 */ +#define NR_DEFAULT_TTL 16 /* Default Time To Live - 16 */ +#define NR_DEFAULT_ROUTING 1 /* Is routing enabled ? */ +#define NR_DEFAULT_FAILS 2 /* Link fails until route fails */ + +#define NR_MODULUS 256 +#define NR_MAX_WINDOW_SIZE 127 /* Maximum Window Allowable - 127 */ +#define NR_MAX_PACKET_SIZE 236 /* Maximum Packet Length - 236 */ + +struct nr_sock { + struct sock sock; + ax25_address user_addr, source_addr, dest_addr; + struct net_device *device; + unsigned char my_index, my_id; + unsigned char your_index, your_id; + unsigned char state, condition, bpqext, window; + unsigned short vs, vr, va, vl; + unsigned char n2, n2count; + unsigned long t1, t2, t4, idle; + unsigned short fraglen; + struct timer_list t1timer; + struct timer_list t2timer; + struct timer_list t4timer; + struct timer_list idletimer; + struct sk_buff_head ack_queue; + struct sk_buff_head reseq_queue; + struct sk_buff_head frag_queue; +}; + +#define nr_sk(sk) ((struct nr_sock *)(sk)) + +struct nr_neigh { + struct hlist_node neigh_node; + ax25_address callsign; + ax25_digi *digipeat; + ax25_cb *ax25; + struct net_device *dev; + unsigned char quality; + unsigned char locked; + unsigned short count; + unsigned int number; + unsigned char failed; + atomic_t refcount; +}; + +struct nr_route { + unsigned char quality; + unsigned char obs_count; + struct nr_neigh *neighbour; +}; + +struct nr_node { + struct hlist_node node_node; + ax25_address callsign; + char mnemonic[7]; + unsigned char which; + unsigned char count; + struct nr_route routes[3]; + atomic_t refcount; + spinlock_t node_lock; +}; + +/********************************************************************* + * nr_node & nr_neigh lists, refcounting and locking + *********************************************************************/ + +#define nr_node_hold(__nr_node) \ + atomic_inc(&((__nr_node)->refcount)) + +static __inline__ void nr_node_put(struct nr_node *nr_node) +{ + if (atomic_dec_and_test(&nr_node->refcount)) { + kfree(nr_node); + } +} + +#define nr_neigh_hold(__nr_neigh) \ + atomic_inc(&((__nr_neigh)->refcount)) + +static __inline__ void nr_neigh_put(struct nr_neigh *nr_neigh) +{ + if (atomic_dec_and_test(&nr_neigh->refcount)) { + if (nr_neigh->digipeat != NULL) + kfree(nr_neigh->digipeat); + kfree(nr_neigh); + } +} + +/* nr_node_lock and nr_node_unlock also hold/put the node's refcounter. + */ +static __inline__ void nr_node_lock(struct nr_node *nr_node) +{ + nr_node_hold(nr_node); + spin_lock_bh(&nr_node->node_lock); +} + +static __inline__ void nr_node_unlock(struct nr_node *nr_node) +{ + spin_unlock_bh(&nr_node->node_lock); + nr_node_put(nr_node); +} + +#define nr_neigh_for_each(__nr_neigh, node, list) \ + hlist_for_each_entry(__nr_neigh, node, list, neigh_node) + +#define nr_neigh_for_each_safe(__nr_neigh, node, node2, list) \ + hlist_for_each_entry_safe(__nr_neigh, node, node2, list, neigh_node) + +#define nr_node_for_each(__nr_node, node, list) \ + hlist_for_each_entry(__nr_node, node, list, node_node) + +#define nr_node_for_each_safe(__nr_node, node, node2, list) \ + hlist_for_each_entry_safe(__nr_node, node, node2, list, node_node) + + +/*********************************************************************/ + +/* af_netrom.c */ +extern int sysctl_netrom_default_path_quality; +extern int sysctl_netrom_obsolescence_count_initialiser; +extern int sysctl_netrom_network_ttl_initialiser; +extern int sysctl_netrom_transport_timeout; +extern int sysctl_netrom_transport_maximum_tries; +extern int sysctl_netrom_transport_acknowledge_delay; +extern int sysctl_netrom_transport_busy_delay; +extern int sysctl_netrom_transport_requested_window_size; +extern int sysctl_netrom_transport_no_activity_timeout; +extern int sysctl_netrom_routing_control; +extern int sysctl_netrom_link_fails_count; +extern int nr_rx_frame(struct sk_buff *, struct net_device *); +extern void nr_destroy_socket(struct sock *); + +/* nr_dev.c */ +extern int nr_rx_ip(struct sk_buff *, struct net_device *); +extern void nr_setup(struct net_device *); + +/* nr_in.c */ +extern int nr_process_rx_frame(struct sock *, struct sk_buff *); + +/* nr_loopback.c */ +extern void nr_loopback_init(void); +extern void nr_loopback_clear(void); +extern int nr_loopback_queue(struct sk_buff *); + +/* nr_out.c */ +extern void nr_output(struct sock *, struct sk_buff *); +extern void nr_send_nak_frame(struct sock *); +extern void nr_kick(struct sock *); +extern void nr_transmit_buffer(struct sock *, struct sk_buff *); +extern void nr_establish_data_link(struct sock *); +extern void nr_enquiry_response(struct sock *); +extern void nr_check_iframes_acked(struct sock *, unsigned short); + +/* nr_route.c */ +extern void nr_rt_device_down(struct net_device *); +extern struct net_device *nr_dev_first(void); +extern struct net_device *nr_dev_get(ax25_address *); +extern int nr_rt_ioctl(unsigned int, void __user *); +extern void nr_link_failed(ax25_cb *, int); +extern int nr_route_frame(struct sk_buff *, ax25_cb *); +extern struct file_operations nr_nodes_fops; +extern struct file_operations nr_neigh_fops; +extern void nr_rt_free(void); + +/* nr_subr.c */ +extern void nr_clear_queues(struct sock *); +extern void nr_frames_acked(struct sock *, unsigned short); +extern void nr_requeue_frames(struct sock *); +extern int nr_validate_nr(struct sock *, unsigned short); +extern int nr_in_rx_window(struct sock *, unsigned short); +extern void nr_write_internal(struct sock *, int); +extern void nr_transmit_refusal(struct sk_buff *, int); +extern void nr_disconnect(struct sock *, int); + +/* nr_timer.c */ +extern void nr_init_timers(struct sock *sk); +extern void nr_start_heartbeat(struct sock *); +extern void nr_start_t1timer(struct sock *); +extern void nr_start_t2timer(struct sock *); +extern void nr_start_t4timer(struct sock *); +extern void nr_start_idletimer(struct sock *); +extern void nr_stop_heartbeat(struct sock *); +extern void nr_stop_t1timer(struct sock *); +extern void nr_stop_t2timer(struct sock *); +extern void nr_stop_t4timer(struct sock *); +extern void nr_stop_idletimer(struct sock *); +extern int nr_t1timer_running(struct sock *); + +/* sysctl_net_netrom.c */ +extern void nr_register_sysctl(void); +extern void nr_unregister_sysctl(void); + +#endif diff --git a/include/net/p8022.h b/include/net/p8022.h new file mode 100644 index 000000000000..3c99a86c3581 --- /dev/null +++ b/include/net/p8022.h @@ -0,0 +1,10 @@ +#ifndef _NET_P8022_H +#define _NET_P8022_H +extern struct datalink_proto * + register_8022_client(unsigned char type, + int (*func)(struct sk_buff *skb, + struct net_device *dev, + struct packet_type *pt)); +extern void unregister_8022_client(struct datalink_proto *proto); + +#endif diff --git a/include/net/pkt_act.h b/include/net/pkt_act.h new file mode 100644 index 000000000000..bd08964b72c0 --- /dev/null +++ b/include/net/pkt_act.h @@ -0,0 +1,275 @@ +#ifndef __NET_PKT_ACT_H +#define __NET_PKT_ACT_H + +#include <asm/uaccess.h> +#include <asm/system.h> +#include <linux/bitops.h> +#include <linux/config.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/string.h> +#include <linux/mm.h> +#include <linux/socket.h> +#include <linux/sockios.h> +#include <linux/in.h> +#include <linux/errno.h> +#include <linux/interrupt.h> +#include <linux/netdevice.h> +#include <linux/skbuff.h> +#include <linux/rtnetlink.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/proc_fs.h> +#include <net/sock.h> +#include <net/pkt_sched.h> + +#define tca_st(val) (struct tcf_##val *) +#define PRIV(a,name) ( tca_st(name) (a)->priv) + +#if 0 /* control */ +#define DPRINTK(format,args...) printk(KERN_DEBUG format,##args) +#else +#define DPRINTK(format,args...) +#endif + +#if 0 /* data */ +#define D2PRINTK(format,args...) printk(KERN_DEBUG format,##args) +#else +#define D2PRINTK(format,args...) +#endif + +static __inline__ unsigned +tcf_hash(u32 index) +{ + return index & MY_TAB_MASK; +} + +/* probably move this from being inline + * and put into act_generic +*/ +static inline void +tcf_hash_destroy(struct tcf_st *p) +{ + unsigned h = tcf_hash(p->index); + struct tcf_st **p1p; + + for (p1p = &tcf_ht[h]; *p1p; p1p = &(*p1p)->next) { + if (*p1p == p) { + write_lock_bh(&tcf_t_lock); + *p1p = p->next; + write_unlock_bh(&tcf_t_lock); +#ifdef CONFIG_NET_ESTIMATOR + gen_kill_estimator(&p->bstats, &p->rate_est); +#endif + kfree(p); + return; + } + } + BUG_TRAP(0); +} + +static inline int +tcf_hash_release(struct tcf_st *p, int bind ) +{ + int ret = 0; + if (p) { + if (bind) { + p->bindcnt--; + } + p->refcnt--; + if(p->bindcnt <=0 && p->refcnt <= 0) { + tcf_hash_destroy(p); + ret = 1; + } + } + return ret; +} + +static __inline__ int +tcf_dump_walker(struct sk_buff *skb, struct netlink_callback *cb, + struct tc_action *a) +{ + struct tcf_st *p; + int err =0, index = -1,i= 0, s_i = 0, n_i = 0; + struct rtattr *r ; + + read_lock(&tcf_t_lock); + + s_i = cb->args[0]; + + for (i = 0; i < MY_TAB_SIZE; i++) { + p = tcf_ht[tcf_hash(i)]; + + for (; p; p = p->next) { + index++; + if (index < s_i) + continue; + a->priv = p; + a->order = n_i; + r = (struct rtattr*) skb->tail; + RTA_PUT(skb, a->order, 0, NULL); + err = tcf_action_dump_1(skb, a, 0, 0); + if (0 > err) { + index--; + skb_trim(skb, (u8*)r - skb->data); + goto done; + } + r->rta_len = skb->tail - (u8*)r; + n_i++; + if (n_i >= TCA_ACT_MAX_PRIO) { + goto done; + } + } + } +done: + read_unlock(&tcf_t_lock); + if (n_i) + cb->args[0] += n_i; + return n_i; + +rtattr_failure: + skb_trim(skb, (u8*)r - skb->data); + goto done; +} + +static __inline__ int +tcf_del_walker(struct sk_buff *skb, struct tc_action *a) +{ + struct tcf_st *p, *s_p; + struct rtattr *r ; + int i= 0, n_i = 0; + + r = (struct rtattr*) skb->tail; + RTA_PUT(skb, a->order, 0, NULL); + RTA_PUT(skb, TCA_KIND, IFNAMSIZ, a->ops->kind); + for (i = 0; i < MY_TAB_SIZE; i++) { + p = tcf_ht[tcf_hash(i)]; + + while (p != NULL) { + s_p = p->next; + if (ACT_P_DELETED == tcf_hash_release(p, 0)) { + module_put(a->ops->owner); + } + n_i++; + p = s_p; + } + } + RTA_PUT(skb, TCA_FCNT, 4, &n_i); + r->rta_len = skb->tail - (u8*)r; + + return n_i; +rtattr_failure: + skb_trim(skb, (u8*)r - skb->data); + return -EINVAL; +} + +static __inline__ int +tcf_generic_walker(struct sk_buff *skb, struct netlink_callback *cb, int type, + struct tc_action *a) +{ + if (type == RTM_DELACTION) { + return tcf_del_walker(skb,a); + } else if (type == RTM_GETACTION) { + return tcf_dump_walker(skb,cb,a); + } else { + printk("tcf_generic_walker: unknown action %d\n",type); + return -EINVAL; + } +} + +static __inline__ struct tcf_st * +tcf_hash_lookup(u32 index) +{ + struct tcf_st *p; + + read_lock(&tcf_t_lock); + for (p = tcf_ht[tcf_hash(index)]; p; p = p->next) { + if (p->index == index) + break; + } + read_unlock(&tcf_t_lock); + return p; +} + +static __inline__ u32 +tcf_hash_new_index(void) +{ + do { + if (++idx_gen == 0) + idx_gen = 1; + } while (tcf_hash_lookup(idx_gen)); + + return idx_gen; +} + + +static inline int +tcf_hash_search(struct tc_action *a, u32 index) +{ + struct tcf_st *p = tcf_hash_lookup(index); + + if (p != NULL) { + a->priv = p; + return 1; + } + return 0; +} + +#ifdef CONFIG_NET_ACT_INIT +static inline struct tcf_st * +tcf_hash_check(u32 index, struct tc_action *a, int ovr, int bind) +{ + struct tcf_st *p = NULL; + if (index && (p = tcf_hash_lookup(index)) != NULL) { + if (bind) { + p->bindcnt++; + p->refcnt++; + } + a->priv = p; + } + return p; +} + +static inline struct tcf_st * +tcf_hash_create(u32 index, struct rtattr *est, struct tc_action *a, int size, int ovr, int bind) +{ + struct tcf_st *p = NULL; + + p = kmalloc(size, GFP_KERNEL); + if (p == NULL) + return p; + + memset(p, 0, size); + p->refcnt = 1; + + if (bind) { + p->bindcnt = 1; + } + + spin_lock_init(&p->lock); + p->stats_lock = &p->lock; + p->index = index ? : tcf_hash_new_index(); + p->tm.install = jiffies; + p->tm.lastuse = jiffies; +#ifdef CONFIG_NET_ESTIMATOR + if (est) + gen_new_estimator(&p->bstats, &p->rate_est, p->stats_lock, est); +#endif + a->priv = (void *) p; + return p; +} + +static inline void tcf_hash_insert(struct tcf_st *p) +{ + unsigned h = tcf_hash(p->index); + + write_lock_bh(&tcf_t_lock); + p->next = tcf_ht[h]; + tcf_ht[h] = p; + write_unlock_bh(&tcf_t_lock); +} + +#endif + +#endif diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h new file mode 100644 index 000000000000..4abda6aec05a --- /dev/null +++ b/include/net/pkt_cls.h @@ -0,0 +1,366 @@ +#ifndef __NET_PKT_CLS_H +#define __NET_PKT_CLS_H + +#include <linux/pkt_cls.h> +#include <net/sch_generic.h> +#include <net/act_api.h> + +/* Basic packet classifier frontend definitions. */ + +struct tcf_walker +{ + int stop; + int skip; + int count; + int (*fn)(struct tcf_proto *, unsigned long node, struct tcf_walker *); +}; + +extern int register_tcf_proto_ops(struct tcf_proto_ops *ops); +extern int unregister_tcf_proto_ops(struct tcf_proto_ops *ops); + +static inline unsigned long +__cls_set_class(unsigned long *clp, unsigned long cl) +{ + unsigned long old_cl; + + old_cl = *clp; + *clp = cl; + return old_cl; +} + +static inline unsigned long +cls_set_class(struct tcf_proto *tp, unsigned long *clp, + unsigned long cl) +{ + unsigned long old_cl; + + tcf_tree_lock(tp); + old_cl = __cls_set_class(clp, cl); + tcf_tree_unlock(tp); + + return old_cl; +} + +static inline void +tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base) +{ + unsigned long cl; + + cl = tp->q->ops->cl_ops->bind_tcf(tp->q, base, r->classid); + cl = cls_set_class(tp, &r->class, cl); + if (cl) + tp->q->ops->cl_ops->unbind_tcf(tp->q, cl); +} + +static inline void +tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r) +{ + unsigned long cl; + + if ((cl = __cls_set_class(&r->class, 0)) != 0) + tp->q->ops->cl_ops->unbind_tcf(tp->q, cl); +} + +struct tcf_exts +{ +#ifdef CONFIG_NET_CLS_ACT + struct tc_action *action; +#elif defined CONFIG_NET_CLS_POLICE + struct tcf_police *police; +#endif +}; + +/* Map to export classifier specific extension TLV types to the + * generic extensions API. Unsupported extensions must be set to 0. + */ +struct tcf_ext_map +{ + int action; + int police; +}; + +/** + * tcf_exts_is_predicative - check if a predicative extension is present + * @exts: tc filter extensions handle + * + * Returns 1 if a predicative extension is present, i.e. an extension which + * might cause further actions and thus overrule the regular tcf_result. + */ +static inline int +tcf_exts_is_predicative(struct tcf_exts *exts) +{ +#ifdef CONFIG_NET_CLS_ACT + return !!exts->action; +#elif defined CONFIG_NET_CLS_POLICE + return !!exts->police; +#else + return 0; +#endif +} + +/** + * tcf_exts_is_available - check if at least one extension is present + * @exts: tc filter extensions handle + * + * Returns 1 if at least one extension is present. + */ +static inline int +tcf_exts_is_available(struct tcf_exts *exts) +{ + /* All non-predicative extensions must be added here. */ + return tcf_exts_is_predicative(exts); +} + +/** + * tcf_exts_exec - execute tc filter extensions + * @skb: socket buffer + * @exts: tc filter extensions handle + * @res: desired result + * + * Executes all configured extensions. Returns 0 on a normal execution, + * a negative number if the filter must be considered unmatched or + * a positive action code (TC_ACT_*) which must be returned to the + * underlying layer. + */ +static inline int +tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts, + struct tcf_result *res) +{ +#ifdef CONFIG_NET_CLS_ACT + if (exts->action) + return tcf_action_exec(skb, exts->action, res); +#elif defined CONFIG_NET_CLS_POLICE + if (exts->police) + return tcf_police(skb, exts->police); +#endif + + return 0; +} + +extern int tcf_exts_validate(struct tcf_proto *tp, struct rtattr **tb, + struct rtattr *rate_tlv, struct tcf_exts *exts, + struct tcf_ext_map *map); +extern void tcf_exts_destroy(struct tcf_proto *tp, struct tcf_exts *exts); +extern void tcf_exts_change(struct tcf_proto *tp, struct tcf_exts *dst, + struct tcf_exts *src); +extern int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts, + struct tcf_ext_map *map); +extern int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts, + struct tcf_ext_map *map); + +/** + * struct tcf_pkt_info - packet information + */ +struct tcf_pkt_info +{ + unsigned char * ptr; + int nexthdr; +}; + +#ifdef CONFIG_NET_EMATCH + +struct tcf_ematch_ops; + +/** + * struct tcf_ematch - extended match (ematch) + * + * @matchid: identifier to allow userspace to reidentify a match + * @flags: flags specifying attributes and the relation to other matches + * @ops: the operations lookup table of the corresponding ematch module + * @datalen: length of the ematch specific configuration data + * @data: ematch specific data + */ +struct tcf_ematch +{ + struct tcf_ematch_ops * ops; + unsigned long data; + unsigned int datalen; + u16 matchid; + u16 flags; +}; + +static inline int tcf_em_is_container(struct tcf_ematch *em) +{ + return !em->ops; +} + +static inline int tcf_em_is_simple(struct tcf_ematch *em) +{ + return em->flags & TCF_EM_SIMPLE; +} + +static inline int tcf_em_is_inverted(struct tcf_ematch *em) +{ + return em->flags & TCF_EM_INVERT; +} + +static inline int tcf_em_last_match(struct tcf_ematch *em) +{ + return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END; +} + +static inline int tcf_em_early_end(struct tcf_ematch *em, int result) +{ + if (tcf_em_last_match(em)) + return 1; + + if (result == 0 && em->flags & TCF_EM_REL_AND) + return 1; + + if (result != 0 && em->flags & TCF_EM_REL_OR) + return 1; + + return 0; +} + +/** + * struct tcf_ematch_tree - ematch tree handle + * + * @hdr: ematch tree header supplied by userspace + * @matches: array of ematches + */ +struct tcf_ematch_tree +{ + struct tcf_ematch_tree_hdr hdr; + struct tcf_ematch * matches; + +}; + +/** + * struct tcf_ematch_ops - ematch module operations + * + * @kind: identifier (kind) of this ematch module + * @datalen: length of expected configuration data (optional) + * @change: called during validation (optional) + * @match: called during ematch tree evaluation, must return 1/0 + * @destroy: called during destroyage (optional) + * @dump: called during dumping process (optional) + * @owner: owner, must be set to THIS_MODULE + * @link: link to previous/next ematch module (internal use) + */ +struct tcf_ematch_ops +{ + int kind; + int datalen; + int (*change)(struct tcf_proto *, void *, + int, struct tcf_ematch *); + int (*match)(struct sk_buff *, struct tcf_ematch *, + struct tcf_pkt_info *); + void (*destroy)(struct tcf_proto *, + struct tcf_ematch *); + int (*dump)(struct sk_buff *, struct tcf_ematch *); + struct module *owner; + struct list_head link; +}; + +extern int tcf_em_register(struct tcf_ematch_ops *); +extern int tcf_em_unregister(struct tcf_ematch_ops *); +extern int tcf_em_tree_validate(struct tcf_proto *, struct rtattr *, + struct tcf_ematch_tree *); +extern void tcf_em_tree_destroy(struct tcf_proto *, struct tcf_ematch_tree *); +extern int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int); +extern int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *, + struct tcf_pkt_info *); + +/** + * tcf_em_tree_change - replace ematch tree of a running classifier + * + * @tp: classifier kind handle + * @dst: destination ematch tree variable + * @src: source ematch tree (temporary tree from tcf_em_tree_validate) + * + * This functions replaces the ematch tree in @dst with the ematch + * tree in @src. The classifier in charge of the ematch tree may be + * running. + */ +static inline void tcf_em_tree_change(struct tcf_proto *tp, + struct tcf_ematch_tree *dst, + struct tcf_ematch_tree *src) +{ + tcf_tree_lock(tp); + memcpy(dst, src, sizeof(*dst)); + tcf_tree_unlock(tp); +} + +/** + * tcf_em_tree_match - evaulate an ematch tree + * + * @skb: socket buffer of the packet in question + * @tree: ematch tree to be used for evaluation + * @info: packet information examined by classifier + * + * This function matches @skb against the ematch tree in @tree by going + * through all ematches respecting their logic relations returning + * as soon as the result is obvious. + * + * Returns 1 if the ematch tree as-one matches, no ematches are configured + * or ematch is not enabled in the kernel, otherwise 0 is returned. + */ +static inline int tcf_em_tree_match(struct sk_buff *skb, + struct tcf_ematch_tree *tree, + struct tcf_pkt_info *info) +{ + if (tree->hdr.nmatches) + return __tcf_em_tree_match(skb, tree, info); + else + return 1; +} + +#else /* CONFIG_NET_EMATCH */ + +struct tcf_ematch_tree +{ +}; + +#define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0) +#define tcf_em_tree_destroy(tp, t) do { (void)(t); } while(0) +#define tcf_em_tree_dump(skb, t, tlv) (0) +#define tcf_em_tree_change(tp, dst, src) do { } while(0) +#define tcf_em_tree_match(skb, t, info) ((void)(info), 1) + +#endif /* CONFIG_NET_EMATCH */ + +static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer) +{ + switch (layer) { + case TCF_LAYER_LINK: + return skb->data; + case TCF_LAYER_NETWORK: + return skb->nh.raw; + case TCF_LAYER_TRANSPORT: + return skb->h.raw; + } + + return NULL; +} + +static inline int tcf_valid_offset(struct sk_buff *skb, unsigned char *ptr, + int len) +{ + return unlikely((ptr + len) < skb->tail && ptr > skb->head); +} + +#ifdef CONFIG_NET_CLS_IND +static inline int +tcf_change_indev(struct tcf_proto *tp, char *indev, struct rtattr *indev_tlv) +{ + if (rtattr_strlcpy(indev, indev_tlv, IFNAMSIZ) >= IFNAMSIZ) + return -EINVAL; + return 0; +} + +static inline int +tcf_match_indev(struct sk_buff *skb, char *indev) +{ + if (0 != indev[0]) { + if (NULL == skb->input_dev) + return 0; + else if (0 != strcmp(indev, skb->input_dev->name)) + return 0; + } + + return 1; +} +#endif /* CONFIG_NET_CLS_IND */ + +#endif diff --git a/include/net/pkt_sched.h b/include/net/pkt_sched.h new file mode 100644 index 000000000000..87496e3aa330 --- /dev/null +++ b/include/net/pkt_sched.h @@ -0,0 +1,249 @@ +#ifndef __NET_PKT_SCHED_H +#define __NET_PKT_SCHED_H + +#include <net/sch_generic.h> + +struct qdisc_walker +{ + int stop; + int skip; + int count; + int (*fn)(struct Qdisc *, unsigned long cl, struct qdisc_walker *); +}; + +extern rwlock_t qdisc_tree_lock; + +#define QDISC_ALIGN 32 +#define QDISC_ALIGN_CONST (QDISC_ALIGN - 1) + +static inline void *qdisc_priv(struct Qdisc *q) +{ + return (char *)q + ((sizeof(struct Qdisc) + QDISC_ALIGN_CONST) + & ~QDISC_ALIGN_CONST); +} + +/* + Timer resolution MUST BE < 10% of min_schedulable_packet_size/bandwidth + + Normal IP packet size ~ 512byte, hence: + + 0.5Kbyte/1Mbyte/sec = 0.5msec, so that we need 50usec timer for + 10Mbit ethernet. + + 10msec resolution -> <50Kbit/sec. + + The result: [34]86 is not good choice for QoS router :-( + + The things are not so bad, because we may use artifical + clock evaluated by integration of network data flow + in the most critical places. + + Note: we do not use fastgettimeofday. + The reason is that, when it is not the same thing as + gettimeofday, it returns invalid timestamp, which is + not updated, when net_bh is active. + */ + +/* General note about internal clock. + + Any clock source returns time intervals, measured in units + close to 1usec. With source CONFIG_NET_SCH_CLK_GETTIMEOFDAY it is precisely + microseconds, otherwise something close but different chosen to minimize + arithmetic cost. Ratio usec/internal untis in form nominator/denominator + may be read from /proc/net/psched. + */ + + +#ifdef CONFIG_NET_SCH_CLK_GETTIMEOFDAY + +typedef struct timeval psched_time_t; +typedef long psched_tdiff_t; + +#define PSCHED_GET_TIME(stamp) do_gettimeofday(&(stamp)) +#define PSCHED_US2JIFFIE(usecs) (((usecs)+(1000000/HZ-1))/(1000000/HZ)) +#define PSCHED_JIFFIE2US(delay) ((delay)*(1000000/HZ)) + +#else /* !CONFIG_NET_SCH_CLK_GETTIMEOFDAY */ + +typedef u64 psched_time_t; +typedef long psched_tdiff_t; + +#ifdef CONFIG_NET_SCH_CLK_JIFFIES + +#if HZ < 96 +#define PSCHED_JSCALE 14 +#elif HZ >= 96 && HZ < 192 +#define PSCHED_JSCALE 13 +#elif HZ >= 192 && HZ < 384 +#define PSCHED_JSCALE 12 +#elif HZ >= 384 && HZ < 768 +#define PSCHED_JSCALE 11 +#elif HZ >= 768 +#define PSCHED_JSCALE 10 +#endif + +#define PSCHED_GET_TIME(stamp) ((stamp) = (get_jiffies_64()<<PSCHED_JSCALE)) +#define PSCHED_US2JIFFIE(delay) (((delay)+(1<<PSCHED_JSCALE)-1)>>PSCHED_JSCALE) +#define PSCHED_JIFFIE2US(delay) ((delay)<<PSCHED_JSCALE) + +#endif /* CONFIG_NET_SCH_CLK_JIFFIES */ +#ifdef CONFIG_NET_SCH_CLK_CPU +#include <asm/timex.h> + +extern psched_tdiff_t psched_clock_per_hz; +extern int psched_clock_scale; +extern psched_time_t psched_time_base; +extern cycles_t psched_time_mark; + +#define PSCHED_GET_TIME(stamp) \ +do { \ + cycles_t cur = get_cycles(); \ + if (sizeof(cycles_t) == sizeof(u32)) { \ + if (cur <= psched_time_mark) \ + psched_time_base += 0x100000000ULL; \ + psched_time_mark = cur; \ + (stamp) = (psched_time_base + cur)>>psched_clock_scale; \ + } else { \ + (stamp) = cur>>psched_clock_scale; \ + } \ +} while (0) +#define PSCHED_US2JIFFIE(delay) (((delay)+psched_clock_per_hz-1)/psched_clock_per_hz) +#define PSCHED_JIFFIE2US(delay) ((delay)*psched_clock_per_hz) + +#endif /* CONFIG_NET_SCH_CLK_CPU */ + +#endif /* !CONFIG_NET_SCH_CLK_GETTIMEOFDAY */ + +#ifdef CONFIG_NET_SCH_CLK_GETTIMEOFDAY +#define PSCHED_TDIFF(tv1, tv2) \ +({ \ + int __delta_sec = (tv1).tv_sec - (tv2).tv_sec; \ + int __delta = (tv1).tv_usec - (tv2).tv_usec; \ + if (__delta_sec) { \ + switch (__delta_sec) { \ + default: \ + __delta = 0; \ + case 2: \ + __delta += 1000000; \ + case 1: \ + __delta += 1000000; \ + } \ + } \ + __delta; \ +}) + +static inline int +psched_tod_diff(int delta_sec, int bound) +{ + int delta; + + if (bound <= 1000000 || delta_sec > (0x7FFFFFFF/1000000)-1) + return bound; + delta = delta_sec * 1000000; + if (delta > bound) + delta = bound; + return delta; +} + +#define PSCHED_TDIFF_SAFE(tv1, tv2, bound) \ +({ \ + int __delta_sec = (tv1).tv_sec - (tv2).tv_sec; \ + int __delta = (tv1).tv_usec - (tv2).tv_usec; \ + switch (__delta_sec) { \ + default: \ + __delta = psched_tod_diff(__delta_sec, bound); break; \ + case 2: \ + __delta += 1000000; \ + case 1: \ + __delta += 1000000; \ + case 0: ; \ + } \ + __delta; \ +}) + +#define PSCHED_TLESS(tv1, tv2) (((tv1).tv_usec < (tv2).tv_usec && \ + (tv1).tv_sec <= (tv2).tv_sec) || \ + (tv1).tv_sec < (tv2).tv_sec) + +#define PSCHED_TADD2(tv, delta, tv_res) \ +({ \ + int __delta = (tv).tv_usec + (delta); \ + (tv_res).tv_sec = (tv).tv_sec; \ + if (__delta > 1000000) { (tv_res).tv_sec++; __delta -= 1000000; } \ + (tv_res).tv_usec = __delta; \ +}) + +#define PSCHED_TADD(tv, delta) \ +({ \ + (tv).tv_usec += (delta); \ + if ((tv).tv_usec > 1000000) { (tv).tv_sec++; \ + (tv).tv_usec -= 1000000; } \ +}) + +/* Set/check that time is in the "past perfect"; + it depends on concrete representation of system time + */ + +#define PSCHED_SET_PASTPERFECT(t) ((t).tv_sec = 0) +#define PSCHED_IS_PASTPERFECT(t) ((t).tv_sec == 0) + +#define PSCHED_AUDIT_TDIFF(t) ({ if ((t) > 2000000) (t) = 2000000; }) + +#else /* !CONFIG_NET_SCH_CLK_GETTIMEOFDAY */ + +#define PSCHED_TDIFF(tv1, tv2) (long)((tv1) - (tv2)) +#define PSCHED_TDIFF_SAFE(tv1, tv2, bound) \ + min_t(long long, (tv1) - (tv2), bound) + + +#define PSCHED_TLESS(tv1, tv2) ((tv1) < (tv2)) +#define PSCHED_TADD2(tv, delta, tv_res) ((tv_res) = (tv) + (delta)) +#define PSCHED_TADD(tv, delta) ((tv) += (delta)) +#define PSCHED_SET_PASTPERFECT(t) ((t) = 0) +#define PSCHED_IS_PASTPERFECT(t) ((t) == 0) +#define PSCHED_AUDIT_TDIFF(t) + +#endif /* !CONFIG_NET_SCH_CLK_GETTIMEOFDAY */ + +extern struct Qdisc noop_qdisc; +extern struct Qdisc_ops noop_qdisc_ops; +extern struct Qdisc_ops pfifo_qdisc_ops; +extern struct Qdisc_ops bfifo_qdisc_ops; + +extern int register_qdisc(struct Qdisc_ops *qops); +extern int unregister_qdisc(struct Qdisc_ops *qops); +extern struct Qdisc *qdisc_lookup(struct net_device *dev, u32 handle); +extern struct Qdisc *qdisc_lookup_class(struct net_device *dev, u32 handle); +extern void dev_init_scheduler(struct net_device *dev); +extern void dev_shutdown(struct net_device *dev); +extern void dev_activate(struct net_device *dev); +extern void dev_deactivate(struct net_device *dev); +extern void qdisc_reset(struct Qdisc *qdisc); +extern void qdisc_destroy(struct Qdisc *qdisc); +extern struct Qdisc * qdisc_create_dflt(struct net_device *dev, + struct Qdisc_ops *ops); +extern struct qdisc_rate_table *qdisc_get_rtab(struct tc_ratespec *r, + struct rtattr *tab); +extern void qdisc_put_rtab(struct qdisc_rate_table *tab); + +extern int qdisc_restart(struct net_device *dev); + +static inline void qdisc_run(struct net_device *dev) +{ + while (!netif_queue_stopped(dev) && qdisc_restart(dev) < 0) + /* NOTHING */; +} + +extern int tc_classify(struct sk_buff *skb, struct tcf_proto *tp, + struct tcf_result *res); + +/* Calculate maximal size of packet seen by hard_start_xmit + routine of this device. + */ +static inline unsigned psched_mtu(struct net_device *dev) +{ + unsigned mtu = dev->mtu; + return dev->hard_header ? mtu + dev->hard_header_len : mtu; +} + +#endif diff --git a/include/net/protocol.h b/include/net/protocol.h new file mode 100644 index 000000000000..357691f6a45f --- /dev/null +++ b/include/net/protocol.h @@ -0,0 +1,99 @@ +/* + * INET An implementation of the TCP/IP protocol suite for the LINUX + * operating system. INET is implemented using the BSD Socket + * interface as the means of communication with the user level. + * + * Definitions for the protocol dispatcher. + * + * Version: @(#)protocol.h 1.0.2 05/07/93 + * + * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * Changes: + * Alan Cox : Added a name field and a frag handler + * field for later. + * Alan Cox : Cleaned up, and sorted types. + * Pedro Roque : inet6 protocols + */ + +#ifndef _PROTOCOL_H +#define _PROTOCOL_H + +#include <linux/config.h> +#include <linux/in6.h> +#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) +#include <linux/ipv6.h> +#endif + +#define MAX_INET_PROTOS 256 /* Must be a power of 2 */ + + +/* This is used to register protocols. */ +struct net_protocol { + int (*handler)(struct sk_buff *skb); + void (*err_handler)(struct sk_buff *skb, u32 info); + int no_policy; +}; + +#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) +struct inet6_protocol +{ + int (*handler)(struct sk_buff **skb, unsigned int *nhoffp); + + void (*err_handler)(struct sk_buff *skb, + struct inet6_skb_parm *opt, + int type, int code, int offset, + __u32 info); + unsigned int flags; /* INET6_PROTO_xxx */ +}; + +#define INET6_PROTO_NOPOLICY 0x1 +#define INET6_PROTO_FINAL 0x2 +#endif + +/* This is used to register socket interfaces for IP protocols. */ +struct inet_protosw { + struct list_head list; + + /* These two fields form the lookup key. */ + unsigned short type; /* This is the 2nd argument to socket(2). */ + int protocol; /* This is the L4 protocol number. */ + + struct proto *prot; + struct proto_ops *ops; + + int capability; /* Which (if any) capability do + * we need to use this socket + * interface? + */ + char no_check; /* checksum on rcv/xmit/none? */ + unsigned char flags; /* See INET_PROTOSW_* below. */ +}; +#define INET_PROTOSW_REUSE 0x01 /* Are ports automatically reusable? */ +#define INET_PROTOSW_PERMANENT 0x02 /* Permanent protocols are unremovable. */ + +extern struct net_protocol *inet_protocol_base; +extern struct net_protocol *inet_protos[MAX_INET_PROTOS]; + +#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) +extern struct inet6_protocol *inet6_protos[MAX_INET_PROTOS]; +#endif + +extern int inet_add_protocol(struct net_protocol *prot, unsigned char num); +extern int inet_del_protocol(struct net_protocol *prot, unsigned char num); +extern void inet_register_protosw(struct inet_protosw *p); +extern void inet_unregister_protosw(struct inet_protosw *p); + +#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) +extern int inet6_add_protocol(struct inet6_protocol *prot, unsigned char num); +extern int inet6_del_protocol(struct inet6_protocol *prot, unsigned char num); +extern void inet6_register_protosw(struct inet_protosw *p); +extern void inet6_unregister_protosw(struct inet_protosw *p); +#endif + +#endif /* _PROTOCOL_H */ diff --git a/include/net/psnap.h b/include/net/psnap.h new file mode 100644 index 000000000000..9c94e8f98b36 --- /dev/null +++ b/include/net/psnap.h @@ -0,0 +1,7 @@ +#ifndef _NET_PSNAP_H +#define _NET_PSNAP_H + +extern struct datalink_proto *register_snap_client(unsigned char *desc, int (*rcvfunc)(struct sk_buff *, struct net_device *, struct packet_type *)); +extern void unregister_snap_client(struct datalink_proto *proto); + +#endif diff --git a/include/net/raw.h b/include/net/raw.h new file mode 100644 index 000000000000..1c411c45587a --- /dev/null +++ b/include/net/raw.h @@ -0,0 +1,42 @@ +/* + * INET An implementation of the TCP/IP protocol suite for the LINUX + * operating system. INET is implemented using the BSD Socket + * interface as the means of communication with the user level. + * + * Definitions for the RAW-IP module. + * + * Version: @(#)raw.h 1.0.2 05/07/93 + * + * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#ifndef _RAW_H +#define _RAW_H + + +extern struct proto raw_prot; + + +extern void raw_err(struct sock *, struct sk_buff *, u32 info); +extern int raw_rcv(struct sock *, struct sk_buff *); + +/* Note: v4 ICMP wants to get at this stuff, if you change the + * hashing mechanism, make sure you update icmp.c as well. + */ +#define RAWV4_HTABLE_SIZE MAX_INET_PROTOS +extern struct hlist_head raw_v4_htable[RAWV4_HTABLE_SIZE]; + +extern rwlock_t raw_v4_lock; + + +extern struct sock *__raw_v4_lookup(struct sock *sk, unsigned short num, + unsigned long raddr, unsigned long laddr, + int dif); + +extern void raw_v4_input(struct sk_buff *skb, struct iphdr *iph, int hash); + +#endif /* _RAW_H */ diff --git a/include/net/rawv6.h b/include/net/rawv6.h new file mode 100644 index 000000000000..23fd9a6a221a --- /dev/null +++ b/include/net/rawv6.h @@ -0,0 +1,27 @@ +#ifndef _NET_RAWV6_H +#define _NET_RAWV6_H + +#ifdef __KERNEL__ + +#define RAWV6_HTABLE_SIZE MAX_INET_PROTOS +extern struct hlist_head raw_v6_htable[RAWV6_HTABLE_SIZE]; +extern rwlock_t raw_v6_lock; + +extern void ipv6_raw_deliver(struct sk_buff *skb, int nexthdr); + +extern struct sock *__raw_v6_lookup(struct sock *sk, unsigned short num, + struct in6_addr *loc_addr, struct in6_addr *rmt_addr); + +extern int rawv6_rcv(struct sock *sk, + struct sk_buff *skb); + + +extern void rawv6_err(struct sock *sk, + struct sk_buff *skb, + struct inet6_skb_parm *opt, + int type, int code, + int offset, u32 info); + +#endif + +#endif diff --git a/include/net/rose.h b/include/net/rose.h new file mode 100644 index 000000000000..3249b979605a --- /dev/null +++ b/include/net/rose.h @@ -0,0 +1,235 @@ +/* + * Declarations of Rose type objects. + * + * Jonathan Naylor G4KLX 25/8/96 + */ + +#ifndef _ROSE_H +#define _ROSE_H + +#include <linux/rose.h> +#include <net/sock.h> + +#define ROSE_ADDR_LEN 5 + +#define ROSE_MIN_LEN 3 + +#define ROSE_GFI 0x10 +#define ROSE_Q_BIT 0x80 +#define ROSE_D_BIT 0x40 +#define ROSE_M_BIT 0x10 + +#define ROSE_CALL_REQUEST 0x0B +#define ROSE_CALL_ACCEPTED 0x0F +#define ROSE_CLEAR_REQUEST 0x13 +#define ROSE_CLEAR_CONFIRMATION 0x17 +#define ROSE_DATA 0x00 +#define ROSE_INTERRUPT 0x23 +#define ROSE_INTERRUPT_CONFIRMATION 0x27 +#define ROSE_RR 0x01 +#define ROSE_RNR 0x05 +#define ROSE_REJ 0x09 +#define ROSE_RESET_REQUEST 0x1B +#define ROSE_RESET_CONFIRMATION 0x1F +#define ROSE_REGISTRATION_REQUEST 0xF3 +#define ROSE_REGISTRATION_CONFIRMATION 0xF7 +#define ROSE_RESTART_REQUEST 0xFB +#define ROSE_RESTART_CONFIRMATION 0xFF +#define ROSE_DIAGNOSTIC 0xF1 +#define ROSE_ILLEGAL 0xFD + +/* Define Link State constants. */ + +enum { + ROSE_STATE_0, /* Ready */ + ROSE_STATE_1, /* Awaiting Call Accepted */ + ROSE_STATE_2, /* Awaiting Clear Confirmation */ + ROSE_STATE_3, /* Data Transfer */ + ROSE_STATE_4, /* Awaiting Reset Confirmation */ + ROSE_STATE_5 /* Deferred Call Acceptance */ +}; + +#define ROSE_DEFAULT_T0 (180 * HZ) /* Default T10 T20 value */ +#define ROSE_DEFAULT_T1 (200 * HZ) /* Default T11 T21 value */ +#define ROSE_DEFAULT_T2 (180 * HZ) /* Default T12 T22 value */ +#define ROSE_DEFAULT_T3 (180 * HZ) /* Default T13 T23 value */ +#define ROSE_DEFAULT_HB (5 * HZ) /* Default Holdback value */ +#define ROSE_DEFAULT_IDLE (0 * 60 * HZ) /* No Activity Timeout - none */ +#define ROSE_DEFAULT_ROUTING 1 /* Default routing flag */ +#define ROSE_DEFAULT_FAIL_TIMEOUT (120 * HZ) /* Time until link considered usable */ +#define ROSE_DEFAULT_MAXVC 50 /* Maximum number of VCs per neighbour */ +#define ROSE_DEFAULT_WINDOW_SIZE 7 /* Default window size */ + +#define ROSE_MODULUS 8 +#define ROSE_MAX_PACKET_SIZE 251 /* Maximum packet size */ + +#define ROSE_COND_ACK_PENDING 0x01 +#define ROSE_COND_PEER_RX_BUSY 0x02 +#define ROSE_COND_OWN_RX_BUSY 0x04 + +#define FAC_NATIONAL 0x00 +#define FAC_CCITT 0x0F + +#define FAC_NATIONAL_RAND 0x7F +#define FAC_NATIONAL_FLAGS 0x3F +#define FAC_NATIONAL_DEST_DIGI 0xE9 +#define FAC_NATIONAL_SRC_DIGI 0xEB +#define FAC_NATIONAL_FAIL_CALL 0xED +#define FAC_NATIONAL_FAIL_ADD 0xEE +#define FAC_NATIONAL_DIGIS 0xEF + +#define FAC_CCITT_DEST_NSAP 0xC9 +#define FAC_CCITT_SRC_NSAP 0xCB + +struct rose_neigh { + struct rose_neigh *next; + ax25_address callsign; + ax25_digi *digipeat; + ax25_cb *ax25; + struct net_device *dev; + unsigned short count; + unsigned short use; + unsigned int number; + char restarted; + char dce_mode; + char loopback; + struct sk_buff_head queue; + struct timer_list t0timer; + struct timer_list ftimer; +}; + +struct rose_node { + struct rose_node *next; + rose_address address; + unsigned short mask; + unsigned char count; + char loopback; + struct rose_neigh *neighbour[3]; +}; + +struct rose_route { + struct rose_route *next; + unsigned int lci1, lci2; + rose_address src_addr, dest_addr; + ax25_address src_call, dest_call; + struct rose_neigh *neigh1, *neigh2; + unsigned int rand; +}; + +struct rose_sock { + struct sock sock; + rose_address source_addr, dest_addr; + ax25_address source_call, dest_call; + unsigned char source_ndigis, dest_ndigis; + ax25_address source_digis[ROSE_MAX_DIGIS]; + ax25_address dest_digis[ROSE_MAX_DIGIS]; + struct rose_neigh *neighbour; + struct net_device *device; + unsigned int lci, rand; + unsigned char state, condition, qbitincl, defer; + unsigned char cause, diagnostic; + unsigned short vs, vr, va, vl; + unsigned long t1, t2, t3, hb, idle; +#ifdef M_BIT + unsigned short fraglen; + struct sk_buff_head frag_queue; +#endif + struct sk_buff_head ack_queue; + struct rose_facilities_struct facilities; + struct timer_list timer; + struct timer_list idletimer; +}; + +#define rose_sk(sk) ((struct rose_sock *)(sk)) + +/* af_rose.c */ +extern ax25_address rose_callsign; +extern int sysctl_rose_restart_request_timeout; +extern int sysctl_rose_call_request_timeout; +extern int sysctl_rose_reset_request_timeout; +extern int sysctl_rose_clear_request_timeout; +extern int sysctl_rose_no_activity_timeout; +extern int sysctl_rose_ack_hold_back_timeout; +extern int sysctl_rose_routing_control; +extern int sysctl_rose_link_fail_timeout; +extern int sysctl_rose_maximum_vcs; +extern int sysctl_rose_window_size; +extern int rosecmp(rose_address *, rose_address *); +extern int rosecmpm(rose_address *, rose_address *, unsigned short); +extern const char *rose2asc(const rose_address *); +extern struct sock *rose_find_socket(unsigned int, struct rose_neigh *); +extern void rose_kill_by_neigh(struct rose_neigh *); +extern unsigned int rose_new_lci(struct rose_neigh *); +extern int rose_rx_call_request(struct sk_buff *, struct net_device *, struct rose_neigh *, unsigned int); +extern void rose_destroy_socket(struct sock *); + +/* rose_dev.c */ +extern void rose_setup(struct net_device *); + +/* rose_in.c */ +extern int rose_process_rx_frame(struct sock *, struct sk_buff *); + +/* rose_link.c */ +extern void rose_start_ftimer(struct rose_neigh *); +extern void rose_stop_ftimer(struct rose_neigh *); +extern void rose_stop_t0timer(struct rose_neigh *); +extern int rose_ftimer_running(struct rose_neigh *); +extern void rose_link_rx_restart(struct sk_buff *, struct rose_neigh *, unsigned short); +extern void rose_transmit_clear_request(struct rose_neigh *, unsigned int, unsigned char, unsigned char); +extern void rose_transmit_link(struct sk_buff *, struct rose_neigh *); + +/* rose_loopback.c */ +extern void rose_loopback_init(void); +extern void rose_loopback_clear(void); +extern int rose_loopback_queue(struct sk_buff *, struct rose_neigh *); + +/* rose_out.c */ +extern void rose_kick(struct sock *); +extern void rose_enquiry_response(struct sock *); + +/* rose_route.c */ +extern struct rose_neigh *rose_loopback_neigh; +extern struct file_operations rose_neigh_fops; +extern struct file_operations rose_nodes_fops; +extern struct file_operations rose_routes_fops; + +extern int rose_add_loopback_neigh(void); +extern int rose_add_loopback_node(rose_address *); +extern void rose_del_loopback_node(rose_address *); +extern void rose_rt_device_down(struct net_device *); +extern void rose_link_device_down(struct net_device *); +extern struct net_device *rose_dev_first(void); +extern struct net_device *rose_dev_get(rose_address *); +extern struct rose_route *rose_route_free_lci(unsigned int, struct rose_neigh *); +extern struct rose_neigh *rose_get_neigh(rose_address *, unsigned char *, unsigned char *); +extern int rose_rt_ioctl(unsigned int, void __user *); +extern void rose_link_failed(ax25_cb *, int); +extern int rose_route_frame(struct sk_buff *, ax25_cb *); +extern void rose_rt_free(void); + +/* rose_subr.c */ +extern void rose_clear_queues(struct sock *); +extern void rose_frames_acked(struct sock *, unsigned short); +extern void rose_requeue_frames(struct sock *); +extern int rose_validate_nr(struct sock *, unsigned short); +extern void rose_write_internal(struct sock *, int); +extern int rose_decode(struct sk_buff *, int *, int *, int *, int *, int *); +extern int rose_parse_facilities(unsigned char *, struct rose_facilities_struct *); +extern void rose_disconnect(struct sock *, int, int, int); + +/* rose_timer.c */ +extern void rose_start_heartbeat(struct sock *); +extern void rose_start_t1timer(struct sock *); +extern void rose_start_t2timer(struct sock *); +extern void rose_start_t3timer(struct sock *); +extern void rose_start_hbtimer(struct sock *); +extern void rose_start_idletimer(struct sock *); +extern void rose_stop_heartbeat(struct sock *); +extern void rose_stop_timer(struct sock *); +extern void rose_stop_idletimer(struct sock *); + +/* sysctl_net_rose.c */ +extern void rose_register_sysctl(void); +extern void rose_unregister_sysctl(void); + +#endif diff --git a/include/net/route.h b/include/net/route.h new file mode 100644 index 000000000000..22da7579d5de --- /dev/null +++ b/include/net/route.h @@ -0,0 +1,205 @@ +/* + * INET An implementation of the TCP/IP protocol suite for the LINUX + * operating system. INET is implemented using the BSD Socket + * interface as the means of communication with the user level. + * + * Definitions for the IP router. + * + * Version: @(#)route.h 1.0.4 05/27/93 + * + * Authors: Ross Biro, <bir7@leland.Stanford.Edu> + * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> + * Fixes: + * Alan Cox : Reformatted. Added ip_rt_local() + * Alan Cox : Support for TCP parameters. + * Alexey Kuznetsov: Major changes for new routing code. + * Mike McLagan : Routing by source + * Robert Olsson : Added rt_cache statistics + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#ifndef _ROUTE_H +#define _ROUTE_H + +#include <linux/config.h> +#include <net/dst.h> +#include <net/inetpeer.h> +#include <net/flow.h> +#include <linux/in_route.h> +#include <linux/rtnetlink.h> +#include <linux/route.h> +#include <linux/ip.h> +#include <linux/cache.h> + +#ifndef __KERNEL__ +#warning This file is not supposed to be used outside of kernel. +#endif + +#define RTO_ONLINK 0x01 + +#define RTO_CONN 0 +/* RTO_CONN is not used (being alias for 0), but preserved not to break + * some modules referring to it. */ + +#define RT_CONN_FLAGS(sk) (RT_TOS(inet_sk(sk)->tos) | sock_flag(sk, SOCK_LOCALROUTE)) + +struct fib_nh; +struct inet_peer; +struct rtable +{ + union + { + struct dst_entry dst; + struct rtable *rt_next; + } u; + + struct in_device *idev; + + unsigned rt_flags; + __u16 rt_type; + __u16 rt_multipath_alg; + + __u32 rt_dst; /* Path destination */ + __u32 rt_src; /* Path source */ + int rt_iif; + + /* Info on neighbour */ + __u32 rt_gateway; + + /* Cache lookup keys */ + struct flowi fl; + + /* Miscellaneous cached information */ + __u32 rt_spec_dst; /* RFC1122 specific destination */ + struct inet_peer *peer; /* long-living peer info */ +}; + +struct ip_rt_acct +{ + __u32 o_bytes; + __u32 o_packets; + __u32 i_bytes; + __u32 i_packets; +}; + +struct rt_cache_stat +{ + unsigned int in_hit; + unsigned int in_slow_tot; + unsigned int in_slow_mc; + unsigned int in_no_route; + unsigned int in_brd; + unsigned int in_martian_dst; + unsigned int in_martian_src; + unsigned int out_hit; + unsigned int out_slow_tot; + unsigned int out_slow_mc; + unsigned int gc_total; + unsigned int gc_ignored; + unsigned int gc_goal_miss; + unsigned int gc_dst_overflow; + unsigned int in_hlist_search; + unsigned int out_hlist_search; +}; + +extern struct rt_cache_stat *rt_cache_stat; +#define RT_CACHE_STAT_INC(field) \ + (per_cpu_ptr(rt_cache_stat, _smp_processor_id())->field++) + +extern struct ip_rt_acct *ip_rt_acct; + +struct in_device; +extern int ip_rt_init(void); +extern void ip_rt_redirect(u32 old_gw, u32 dst, u32 new_gw, + u32 src, u8 tos, struct net_device *dev); +extern void ip_rt_advice(struct rtable **rp, int advice); +extern void rt_cache_flush(int how); +extern int __ip_route_output_key(struct rtable **, const struct flowi *flp); +extern int ip_route_output_key(struct rtable **, struct flowi *flp); +extern int ip_route_output_flow(struct rtable **rp, struct flowi *flp, struct sock *sk, int flags); +extern int ip_route_input(struct sk_buff*, u32 dst, u32 src, u8 tos, struct net_device *devin); +extern unsigned short ip_rt_frag_needed(struct iphdr *iph, unsigned short new_mtu); +extern void ip_rt_send_redirect(struct sk_buff *skb); + +extern unsigned inet_addr_type(u32 addr); +extern void ip_rt_multicast_event(struct in_device *); +extern int ip_rt_ioctl(unsigned int cmd, void __user *arg); +extern void ip_rt_get_source(u8 *src, struct rtable *rt); +extern int ip_rt_dump(struct sk_buff *skb, struct netlink_callback *cb); + +static inline void ip_rt_put(struct rtable * rt) +{ + if (rt) + dst_release(&rt->u.dst); +} + +#define IPTOS_RT_MASK (IPTOS_TOS_MASK & ~3) + +extern __u8 ip_tos2prio[16]; + +static inline char rt_tos2priority(u8 tos) +{ + return ip_tos2prio[IPTOS_TOS(tos)>>1]; +} + +static inline int ip_route_connect(struct rtable **rp, u32 dst, + u32 src, u32 tos, int oif, u8 protocol, + u16 sport, u16 dport, struct sock *sk) +{ + struct flowi fl = { .oif = oif, + .nl_u = { .ip4_u = { .daddr = dst, + .saddr = src, + .tos = tos } }, + .proto = protocol, + .uli_u = { .ports = + { .sport = sport, + .dport = dport } } }; + + int err; + if (!dst || !src) { + err = __ip_route_output_key(rp, &fl); + if (err) + return err; + fl.fl4_dst = (*rp)->rt_dst; + fl.fl4_src = (*rp)->rt_src; + ip_rt_put(*rp); + *rp = NULL; + } + return ip_route_output_flow(rp, &fl, sk, 0); +} + +static inline int ip_route_newports(struct rtable **rp, u16 sport, u16 dport, + struct sock *sk) +{ + if (sport != (*rp)->fl.fl_ip_sport || + dport != (*rp)->fl.fl_ip_dport) { + struct flowi fl; + + memcpy(&fl, &(*rp)->fl, sizeof(fl)); + fl.fl_ip_sport = sport; + fl.fl_ip_dport = dport; +#if defined(CONFIG_IP_ROUTE_MULTIPATH_CACHED) + fl.flags |= FLOWI_FLAG_MULTIPATHOLDROUTE; +#endif + ip_rt_put(*rp); + *rp = NULL; + return ip_route_output_flow(rp, &fl, sk, 0); + } + return 0; +} + +extern void rt_bind_peer(struct rtable *rt, int create); + +static inline struct inet_peer *rt_get_peer(struct rtable *rt) +{ + if (rt->peer) + return rt->peer; + + rt_bind_peer(rt, 0); + return rt->peer; +} + +#endif /* _ROUTE_H */ diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h new file mode 100644 index 000000000000..c57504b3b518 --- /dev/null +++ b/include/net/sch_generic.h @@ -0,0 +1,175 @@ +#ifndef __NET_SCHED_GENERIC_H +#define __NET_SCHED_GENERIC_H + +#include <linux/config.h> +#include <linux/netdevice.h> +#include <linux/types.h> +#include <linux/rcupdate.h> +#include <linux/module.h> +#include <linux/rtnetlink.h> +#include <linux/pkt_sched.h> +#include <linux/pkt_cls.h> +#include <net/gen_stats.h> + +struct Qdisc_ops; +struct qdisc_walker; +struct tcf_walker; +struct module; + +struct qdisc_rate_table +{ + struct tc_ratespec rate; + u32 data[256]; + struct qdisc_rate_table *next; + int refcnt; +}; + +struct Qdisc +{ + int (*enqueue)(struct sk_buff *skb, struct Qdisc *dev); + struct sk_buff * (*dequeue)(struct Qdisc *dev); + unsigned flags; +#define TCQ_F_BUILTIN 1 +#define TCQ_F_THROTTLED 2 +#define TCQ_F_INGRESS 4 + int padded; + struct Qdisc_ops *ops; + u32 handle; + u32 parent; + atomic_t refcnt; + struct sk_buff_head q; + struct net_device *dev; + struct list_head list; + + struct gnet_stats_basic bstats; + struct gnet_stats_queue qstats; + struct gnet_stats_rate_est rate_est; + spinlock_t *stats_lock; + struct rcu_head q_rcu; + int (*reshape_fail)(struct sk_buff *skb, + struct Qdisc *q); + + /* This field is deprecated, but it is still used by CBQ + * and it will live until better solution will be invented. + */ + struct Qdisc *__parent; +}; + +struct Qdisc_class_ops +{ + /* Child qdisc manipulation */ + int (*graft)(struct Qdisc *, unsigned long cl, + struct Qdisc *, struct Qdisc **); + struct Qdisc * (*leaf)(struct Qdisc *, unsigned long cl); + + /* Class manipulation routines */ + unsigned long (*get)(struct Qdisc *, u32 classid); + void (*put)(struct Qdisc *, unsigned long); + int (*change)(struct Qdisc *, u32, u32, + struct rtattr **, unsigned long *); + int (*delete)(struct Qdisc *, unsigned long); + void (*walk)(struct Qdisc *, struct qdisc_walker * arg); + + /* Filter manipulation */ + struct tcf_proto ** (*tcf_chain)(struct Qdisc *, unsigned long); + unsigned long (*bind_tcf)(struct Qdisc *, unsigned long, + u32 classid); + void (*unbind_tcf)(struct Qdisc *, unsigned long); + + /* rtnetlink specific */ + int (*dump)(struct Qdisc *, unsigned long, + struct sk_buff *skb, struct tcmsg*); + int (*dump_stats)(struct Qdisc *, unsigned long, + struct gnet_dump *); +}; + +struct Qdisc_ops +{ + struct Qdisc_ops *next; + struct Qdisc_class_ops *cl_ops; + char id[IFNAMSIZ]; + int priv_size; + + int (*enqueue)(struct sk_buff *, struct Qdisc *); + struct sk_buff * (*dequeue)(struct Qdisc *); + int (*requeue)(struct sk_buff *, struct Qdisc *); + unsigned int (*drop)(struct Qdisc *); + + int (*init)(struct Qdisc *, struct rtattr *arg); + void (*reset)(struct Qdisc *); + void (*destroy)(struct Qdisc *); + int (*change)(struct Qdisc *, struct rtattr *arg); + + int (*dump)(struct Qdisc *, struct sk_buff *); + int (*dump_stats)(struct Qdisc *, struct gnet_dump *); + + struct module *owner; +}; + + +struct tcf_result +{ + unsigned long class; + u32 classid; +}; + +struct tcf_proto_ops +{ + struct tcf_proto_ops *next; + char kind[IFNAMSIZ]; + + int (*classify)(struct sk_buff*, struct tcf_proto*, + struct tcf_result *); + int (*init)(struct tcf_proto*); + void (*destroy)(struct tcf_proto*); + + unsigned long (*get)(struct tcf_proto*, u32 handle); + void (*put)(struct tcf_proto*, unsigned long); + int (*change)(struct tcf_proto*, unsigned long, + u32 handle, struct rtattr **, + unsigned long *); + int (*delete)(struct tcf_proto*, unsigned long); + void (*walk)(struct tcf_proto*, struct tcf_walker *arg); + + /* rtnetlink specific */ + int (*dump)(struct tcf_proto*, unsigned long, + struct sk_buff *skb, struct tcmsg*); + + struct module *owner; +}; + +struct tcf_proto +{ + /* Fast access part */ + struct tcf_proto *next; + void *root; + int (*classify)(struct sk_buff*, struct tcf_proto*, + struct tcf_result *); + u32 protocol; + + /* All the rest */ + u32 prio; + u32 classid; + struct Qdisc *q; + void *data; + struct tcf_proto_ops *ops; +}; + + +extern void qdisc_lock_tree(struct net_device *dev); +extern void qdisc_unlock_tree(struct net_device *dev); + +#define sch_tree_lock(q) qdisc_lock_tree((q)->dev) +#define sch_tree_unlock(q) qdisc_unlock_tree((q)->dev) +#define tcf_tree_lock(tp) qdisc_lock_tree((tp)->q->dev) +#define tcf_tree_unlock(tp) qdisc_unlock_tree((tp)->q->dev) + +static inline void +tcf_destroy(struct tcf_proto *tp) +{ + tp->ops->destroy(tp); + module_put(tp->ops->owner); + kfree(tp); +} + +#endif diff --git a/include/net/scm.h b/include/net/scm.h new file mode 100644 index 000000000000..c3fa3d5ab606 --- /dev/null +++ b/include/net/scm.h @@ -0,0 +1,71 @@ +#ifndef __LINUX_NET_SCM_H +#define __LINUX_NET_SCM_H + +#include <linux/limits.h> +#include <linux/net.h> + +/* Well, we should have at least one descriptor open + * to accept passed FDs 8) + */ +#define SCM_MAX_FD (OPEN_MAX-1) + +struct scm_fp_list +{ + int count; + struct file *fp[SCM_MAX_FD]; +}; + +struct scm_cookie +{ + struct ucred creds; /* Skb credentials */ + struct scm_fp_list *fp; /* Passed files */ + unsigned long seq; /* Connection seqno */ +}; + +extern void scm_detach_fds(struct msghdr *msg, struct scm_cookie *scm); +extern void scm_detach_fds_compat(struct msghdr *msg, struct scm_cookie *scm); +extern int __scm_send(struct socket *sock, struct msghdr *msg, struct scm_cookie *scm); +extern void __scm_destroy(struct scm_cookie *scm); +extern struct scm_fp_list * scm_fp_dup(struct scm_fp_list *fpl); + +static __inline__ void scm_destroy(struct scm_cookie *scm) +{ + if (scm && scm->fp) + __scm_destroy(scm); +} + +static __inline__ int scm_send(struct socket *sock, struct msghdr *msg, + struct scm_cookie *scm) +{ + memset(scm, 0, sizeof(*scm)); + scm->creds.uid = current->uid; + scm->creds.gid = current->gid; + scm->creds.pid = current->tgid; + if (msg->msg_controllen <= 0) + return 0; + return __scm_send(sock, msg, scm); +} + +static __inline__ void scm_recv(struct socket *sock, struct msghdr *msg, + struct scm_cookie *scm, int flags) +{ + if (!msg->msg_control) + { + if (test_bit(SOCK_PASSCRED, &sock->flags) || scm->fp) + msg->msg_flags |= MSG_CTRUNC; + scm_destroy(scm); + return; + } + + if (test_bit(SOCK_PASSCRED, &sock->flags)) + put_cmsg(msg, SOL_SOCKET, SCM_CREDENTIALS, sizeof(scm->creds), &scm->creds); + + if (!scm->fp) + return; + + scm_detach_fds(msg, scm); +} + + +#endif /* __LINUX_NET_SCM_H */ + diff --git a/include/net/sctp/command.h b/include/net/sctp/command.h new file mode 100644 index 000000000000..ebc5282e6d58 --- /dev/null +++ b/include/net/sctp/command.h @@ -0,0 +1,211 @@ +/* SCTP kernel reference Implementation + * (C) Copyright IBM Corp. 2001, 2004 + * Copyright (C) 1999-2001 Cisco, Motorola + * + * This file is part of the SCTP kernel reference Implementation + * + * These are the definitions needed for the command object. + * + * The SCTP reference implementation is free software; + * you can redistribute it and/or modify it under the terms of + * the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * the SCTP reference implementation is distributed in the hope that it + * will be useful, but WITHOUT ANY WARRANTY; without even the implied + * ************************ + * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * See the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU CC; see the file COPYING. If not, write to + * the Free Software Foundation, 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + * + * Please send any bug reports or fixes you make to one of the + * following email addresses: + * + * La Monte H.P. Yarroll <piggy@acm.org> + * Karl Knutson <karl@athena.chicago.il.us> + * Ardelle Fan <ardelle.fan@intel.com> + * Sridhar Samudrala <sri@us.ibm.com> + * + * Any bugs reported given to us we will try to fix... any fixes shared will + * be incorporated into the next SCTP release. + */ + + +#ifndef __net_sctp_command_h__ +#define __net_sctp_command_h__ + +#include <net/sctp/constants.h> +#include <net/sctp/structs.h> + + +typedef enum { + SCTP_CMD_NOP = 0, /* Do nothing. */ + SCTP_CMD_NEW_ASOC, /* Register a new association. */ + SCTP_CMD_DELETE_TCB, /* Delete the current association. */ + SCTP_CMD_NEW_STATE, /* Enter a new state. */ + SCTP_CMD_REPORT_TSN, /* Record the arrival of a TSN. */ + SCTP_CMD_GEN_SACK, /* Send a Selective ACK (maybe). */ + SCTP_CMD_PROCESS_SACK, /* Process an inbound SACK. */ + SCTP_CMD_GEN_INIT_ACK, /* Generate an INIT ACK chunk. */ + SCTP_CMD_PEER_INIT, /* Process a INIT from the peer. */ + SCTP_CMD_GEN_COOKIE_ECHO, /* Generate a COOKIE ECHO chunk. */ + SCTP_CMD_CHUNK_ULP, /* Send a chunk to the sockets layer. */ + SCTP_CMD_EVENT_ULP, /* Send a notification to the sockets layer. */ + SCTP_CMD_REPLY, /* Send a chunk to our peer. */ + SCTP_CMD_SEND_PKT, /* Send a full packet to our peer. */ + SCTP_CMD_RETRAN, /* Mark a transport for retransmission. */ + SCTP_CMD_ECN_CE, /* Do delayed CE processing. */ + SCTP_CMD_ECN_ECNE, /* Do delayed ECNE processing. */ + SCTP_CMD_ECN_CWR, /* Do delayed CWR processing. */ + SCTP_CMD_TIMER_START, /* Start a timer. */ + SCTP_CMD_TIMER_RESTART, /* Restart a timer. */ + SCTP_CMD_TIMER_STOP, /* Stop a timer. */ + SCTP_CMD_COUNTER_RESET, /* Reset a counter. */ + SCTP_CMD_COUNTER_INC, /* Increment a counter. */ + SCTP_CMD_INIT_RESTART, /* High level, do init timer work. */ + SCTP_CMD_INIT_FAILED, /* High level, do init failure work. */ + SCTP_CMD_REPORT_DUP, /* Report a duplicate TSN. */ + SCTP_CMD_STRIKE, /* Mark a strike against a transport. */ + SCTP_CMD_TRANSMIT, /* Transmit the outqueue. */ + SCTP_CMD_HB_TIMERS_START, /* Start the heartbeat timers. */ + SCTP_CMD_HB_TIMER_UPDATE, /* Update a heartbeat timers. */ + SCTP_CMD_HB_TIMERS_STOP, /* Stop the heartbeat timers. */ + SCTP_CMD_TRANSPORT_RESET, /* Reset the status of a transport. */ + SCTP_CMD_TRANSPORT_ON, /* Mark the transport as active. */ + SCTP_CMD_REPORT_ERROR, /* Pass this error back out of the sm. */ + SCTP_CMD_REPORT_BAD_TAG, /* Verification tags didn't match. */ + SCTP_CMD_PROCESS_CTSN, /* Sideeffect from shutdown. */ + SCTP_CMD_ASSOC_FAILED, /* Handle association failure. */ + SCTP_CMD_DISCARD_PACKET, /* Discard the whole packet. */ + SCTP_CMD_GEN_SHUTDOWN, /* Generate a SHUTDOWN chunk. */ + SCTP_CMD_UPDATE_ASSOC, /* Update association information. */ + SCTP_CMD_PURGE_OUTQUEUE, /* Purge all data waiting to be sent. */ + SCTP_CMD_SETUP_T2, /* Hi-level, setup T2-shutdown parms. */ + SCTP_CMD_RTO_PENDING, /* Set transport's rto_pending. */ + SCTP_CMD_PART_DELIVER, /* Partial data delivery considerations. */ + SCTP_CMD_RENEGE, /* Renege data on an association. */ + SCTP_CMD_SETUP_T4, /* ADDIP, setup T4 RTO timer parms. */ + SCTP_CMD_PROCESS_OPERR, /* Process an ERROR chunk. */ + SCTP_CMD_REPORT_FWDTSN, /* Report new cumulative TSN Ack. */ + SCTP_CMD_PROCESS_FWDTSN, /* Skips were reported, so process further. */ + SCTP_CMD_CLEAR_INIT_TAG, /* Clears association peer's inittag. */ + SCTP_CMD_DEL_NON_PRIMARY, /* Removes non-primary peer transports. */ + SCTP_CMD_T3_RTX_TIMERS_STOP, /* Stops T3-rtx pending timers */ + SCTP_CMD_FORCE_PRIM_RETRAN, /* Forces retrans. over primary path. */ + SCTP_CMD_LAST +} sctp_verb_t; + +#define SCTP_CMD_MAX (SCTP_CMD_LAST - 1) +#define SCTP_CMD_NUM_VERBS (SCTP_CMD_MAX + 1) + +/* How many commands can you put in an sctp_cmd_seq_t? + * This is a rather arbitrary number, ideally derived from a careful + * analysis of the state functions, but in reality just taken from + * thin air in the hopes othat we don't trigger a kernel panic. + */ +#define SCTP_MAX_NUM_COMMANDS 14 + +typedef union { + __s32 i32; + __u32 u32; + __u16 u16; + __u8 u8; + int error; + sctp_state_t state; + sctp_event_timeout_t to; + sctp_counter_t counter; + void *ptr; + struct sctp_chunk *chunk; + struct sctp_association *asoc; + struct sctp_transport *transport; + struct sctp_bind_addr *bp; + sctp_init_chunk_t *init; + struct sctp_ulpevent *ulpevent; + struct sctp_packet *packet; + sctp_sackhdr_t *sackh; +} sctp_arg_t; + +/* We are simulating ML type constructors here. + * + * SCTP_ARG_CONSTRUCTOR(NAME, TYPE, ELT) builds a function called + * SCTP_NAME() which takes an argument of type TYPE and returns an + * sctp_arg_t. It does this by inserting the sole argument into the + * ELT union element of a local sctp_arg_t. + * + * E.g., SCTP_ARG_CONSTRUCTOR(I32, __s32, i32) builds SCTP_I32(arg), + * which takes an __s32 and returns a sctp_arg_t containing the + * __s32. So, after foo = SCTP_I32(arg), foo.i32 == arg. + */ +static inline sctp_arg_t SCTP_NULL(void) +{ + sctp_arg_t retval; retval.ptr = NULL; return retval; +} +static inline sctp_arg_t SCTP_NOFORCE(void) +{ + sctp_arg_t retval; retval.i32 = 0; return retval; +} +static inline sctp_arg_t SCTP_FORCE(void) +{ + sctp_arg_t retval; retval.i32 = 1; return retval; +} + +#define SCTP_ARG_CONSTRUCTOR(name, type, elt) \ +static inline sctp_arg_t \ +SCTP_## name (type arg) \ +{ sctp_arg_t retval; retval.elt = arg; return retval; } + +SCTP_ARG_CONSTRUCTOR(I32, __s32, i32) +SCTP_ARG_CONSTRUCTOR(U32, __u32, u32) +SCTP_ARG_CONSTRUCTOR(U16, __u16, u16) +SCTP_ARG_CONSTRUCTOR(U8, __u8, u8) +SCTP_ARG_CONSTRUCTOR(ERROR, int, error) +SCTP_ARG_CONSTRUCTOR(STATE, sctp_state_t, state) +SCTP_ARG_CONSTRUCTOR(COUNTER, sctp_counter_t, counter) +SCTP_ARG_CONSTRUCTOR(TO, sctp_event_timeout_t, to) +SCTP_ARG_CONSTRUCTOR(PTR, void *, ptr) +SCTP_ARG_CONSTRUCTOR(CHUNK, struct sctp_chunk *, chunk) +SCTP_ARG_CONSTRUCTOR(ASOC, struct sctp_association *, asoc) +SCTP_ARG_CONSTRUCTOR(TRANSPORT, struct sctp_transport *, transport) +SCTP_ARG_CONSTRUCTOR(BA, struct sctp_bind_addr *, bp) +SCTP_ARG_CONSTRUCTOR(PEER_INIT, sctp_init_chunk_t *, init) +SCTP_ARG_CONSTRUCTOR(ULPEVENT, struct sctp_ulpevent *, ulpevent) +SCTP_ARG_CONSTRUCTOR(PACKET, struct sctp_packet *, packet) +SCTP_ARG_CONSTRUCTOR(SACKH, sctp_sackhdr_t *, sackh) + +typedef struct { + sctp_arg_t obj; + sctp_verb_t verb; +} sctp_cmd_t; + +typedef struct { + sctp_cmd_t cmds[SCTP_MAX_NUM_COMMANDS]; + __u8 next_free_slot; + __u8 next_cmd; +} sctp_cmd_seq_t; + + +/* Initialize a block of memory as a command sequence. + * Return 0 if the initialization fails. + */ +int sctp_init_cmd_seq(sctp_cmd_seq_t *seq); + +/* Add a command to an sctp_cmd_seq_t. + * Return 0 if the command sequence is full. + * + * Use the SCTP_* constructors defined by SCTP_ARG_CONSTRUCTOR() above + * to wrap data which goes in the obj argument. + */ +int sctp_add_cmd(sctp_cmd_seq_t *seq, sctp_verb_t verb, sctp_arg_t obj); + +/* Return the next command structure in an sctp_cmd_seq. + * Return NULL at the end of the sequence. + */ +sctp_cmd_t *sctp_next_cmd(sctp_cmd_seq_t *seq); + +#endif /* __net_sctp_command_h__ */ + diff --git a/include/net/sctp/constants.h b/include/net/sctp/constants.h new file mode 100644 index 000000000000..2b76c0f4babc --- /dev/null +++ b/include/net/sctp/constants.h @@ -0,0 +1,432 @@ +/* SCTP kernel reference Implementation + * (C) Copyright IBM Corp. 2001, 2004 + * Copyright (c) 1999-2000 Cisco, Inc. + * Copyright (c) 1999-2001 Motorola, Inc. + * Copyright (c) 2001 Intel Corp. + * + * This file is part of the SCTP kernel reference Implementation + * + * The SCTP reference implementation is free software; + * you can redistribute it and/or modify it under the terms of + * the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * The SCTP reference implementation is distributed in the hope that it + * will be useful, but WITHOUT ANY WARRANTY; without even the implied + * ************************ + * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * See the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU CC; see the file COPYING. If not, write to + * the Free Software Foundation, 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + * + * Please send any bug reports or fixes you make to the + * email address(es): + * lksctp developers <lksctp-developers@lists.sourceforge.net> + * + * Or submit a bug report through the following website: + * http://www.sf.net/projects/lksctp + * + * Written or modified by: + * La Monte H.P. Yarroll <piggy@acm.org> + * Karl Knutson <karl@athena.chicago.il.us> + * Randall Stewart <randall@stewart.chicago.il.us> + * Ken Morneau <kmorneau@cisco.com> + * Qiaobing Xie <qxie1@motorola.com> + * Xingang Guo <xingang.guo@intel.com> + * Sridhar Samudrala <samudrala@us.ibm.com> + * Daisy Chang <daisyc@us.ibm.com> + * + * Any bugs reported given to us we will try to fix... any fixes shared will + * be incorporated into the next SCTP release. + */ + +#ifndef __sctp_constants_h__ +#define __sctp_constants_h__ + +#include <linux/tcp.h> /* For TCP states used in sctp_sock_state_t */ +#include <linux/sctp.h> +#include <linux/ipv6.h> /* For ipv6hdr. */ +#include <net/sctp/user.h> + +/* Value used for stream negotiation. */ +enum { SCTP_MAX_STREAM = 0xffff }; +enum { SCTP_DEFAULT_OUTSTREAMS = 10 }; +enum { SCTP_DEFAULT_INSTREAMS = SCTP_MAX_STREAM }; + +/* Since CIDs are sparse, we need all four of the following + * symbols. CIDs are dense through SCTP_CID_BASE_MAX. + */ +#define SCTP_CID_BASE_MAX SCTP_CID_SHUTDOWN_COMPLETE +#define SCTP_CID_MAX SCTP_CID_ASCONF_ACK + +#define SCTP_NUM_BASE_CHUNK_TYPES (SCTP_CID_BASE_MAX + 1) +#define SCTP_NUM_CHUNK_TYPES (SCTP_NUM_BASE_CHUNKTYPES + 2) + +#define SCTP_NUM_ADDIP_CHUNK_TYPES 2 + +#define SCTP_NUM_PRSCTP_CHUNK_TYPES 1 + +/* These are the different flavours of event. */ +typedef enum { + + SCTP_EVENT_T_CHUNK = 1, + SCTP_EVENT_T_TIMEOUT, + SCTP_EVENT_T_OTHER, + SCTP_EVENT_T_PRIMITIVE + +} sctp_event_t; + +#define SCTP_EVENT_T_MAX SCTP_EVENT_T_PRIMITIVE +#define SCTP_EVENT_T_NUM (SCTP_EVENT_T_MAX + 1) + +/* As a convenience for the state machine, we append SCTP_EVENT_* and + * SCTP_ULP_* to the list of possible chunks. + */ + +typedef enum { + SCTP_EVENT_TIMEOUT_NONE = 0, + SCTP_EVENT_TIMEOUT_T1_COOKIE, + SCTP_EVENT_TIMEOUT_T1_INIT, + SCTP_EVENT_TIMEOUT_T2_SHUTDOWN, + SCTP_EVENT_TIMEOUT_T3_RTX, + SCTP_EVENT_TIMEOUT_T4_RTO, + SCTP_EVENT_TIMEOUT_T5_SHUTDOWN_GUARD, + SCTP_EVENT_TIMEOUT_HEARTBEAT, + SCTP_EVENT_TIMEOUT_SACK, + SCTP_EVENT_TIMEOUT_AUTOCLOSE, +} sctp_event_timeout_t; + +#define SCTP_EVENT_TIMEOUT_MAX SCTP_EVENT_TIMEOUT_AUTOCLOSE +#define SCTP_NUM_TIMEOUT_TYPES (SCTP_EVENT_TIMEOUT_MAX + 1) + +typedef enum { + SCTP_EVENT_NO_PENDING_TSN = 0, + SCTP_EVENT_ICMP_PROTO_UNREACH, +} sctp_event_other_t; + +#define SCTP_EVENT_OTHER_MAX SCTP_EVENT_ICMP_PROTO_UNREACH +#define SCTP_NUM_OTHER_TYPES (SCTP_EVENT_OTHER_MAX + 1) + +/* These are primitive requests from the ULP. */ +typedef enum { + SCTP_PRIMITIVE_ASSOCIATE = 0, + SCTP_PRIMITIVE_SHUTDOWN, + SCTP_PRIMITIVE_ABORT, + SCTP_PRIMITIVE_SEND, + SCTP_PRIMITIVE_REQUESTHEARTBEAT, + SCTP_PRIMITIVE_ASCONF, +} sctp_event_primitive_t; + +#define SCTP_EVENT_PRIMITIVE_MAX SCTP_PRIMITIVE_ASCONF +#define SCTP_NUM_PRIMITIVE_TYPES (SCTP_EVENT_PRIMITIVE_MAX + 1) + +/* We define here a utility type for manipulating subtypes. + * The subtype constructors all work like this: + * + * sctp_subtype_t foo = SCTP_ST_CHUNK(SCTP_CID_INIT); + */ + +typedef union { + sctp_cid_t chunk; + sctp_event_timeout_t timeout; + sctp_event_other_t other; + sctp_event_primitive_t primitive; +} sctp_subtype_t; + +#define SCTP_SUBTYPE_CONSTRUCTOR(_name, _type, _elt) \ +static inline sctp_subtype_t \ +SCTP_ST_## _name (_type _arg) \ +{ sctp_subtype_t _retval; _retval._elt = _arg; return _retval; } + +SCTP_SUBTYPE_CONSTRUCTOR(CHUNK, sctp_cid_t, chunk) +SCTP_SUBTYPE_CONSTRUCTOR(TIMEOUT, sctp_event_timeout_t, timeout) +SCTP_SUBTYPE_CONSTRUCTOR(OTHER, sctp_event_other_t, other) +SCTP_SUBTYPE_CONSTRUCTOR(PRIMITIVE, sctp_event_primitive_t, primitive) + + +#define sctp_chunk_is_control(a) (a->chunk_hdr->type != SCTP_CID_DATA) +#define sctp_chunk_is_data(a) (a->chunk_hdr->type == SCTP_CID_DATA) + +/* Calculate the actual data size in a data chunk */ +#define SCTP_DATA_SNDSIZE(c) ((int)((unsigned long)(c->chunk_end)\ + - (unsigned long)(c->chunk_hdr)\ + - sizeof(sctp_data_chunk_t))) + +#define SCTP_MAX_ERROR_CAUSE SCTP_ERROR_NONEXIST_IP +#define SCTP_NUM_ERROR_CAUSE 10 + +/* Internal error codes */ +typedef enum { + + SCTP_IERROR_NO_ERROR = 0, + SCTP_IERROR_BASE = 1000, + SCTP_IERROR_NO_COOKIE, + SCTP_IERROR_BAD_SIG, + SCTP_IERROR_STALE_COOKIE, + SCTP_IERROR_NOMEM, + SCTP_IERROR_MALFORMED, + SCTP_IERROR_BAD_TAG, + SCTP_IERROR_BIG_GAP, + SCTP_IERROR_DUP_TSN, + SCTP_IERROR_HIGH_TSN, + SCTP_IERROR_IGNORE_TSN, + SCTP_IERROR_NO_DATA, + SCTP_IERROR_BAD_STREAM, + SCTP_IERROR_BAD_PORTS, + +} sctp_ierror_t; + + + +/* SCTP state defines for internal state machine */ +typedef enum { + + SCTP_STATE_EMPTY = 0, + SCTP_STATE_CLOSED = 1, + SCTP_STATE_COOKIE_WAIT = 2, + SCTP_STATE_COOKIE_ECHOED = 3, + SCTP_STATE_ESTABLISHED = 4, + SCTP_STATE_SHUTDOWN_PENDING = 5, + SCTP_STATE_SHUTDOWN_SENT = 6, + SCTP_STATE_SHUTDOWN_RECEIVED = 7, + SCTP_STATE_SHUTDOWN_ACK_SENT = 8, + +} sctp_state_t; + +#define SCTP_STATE_MAX SCTP_STATE_SHUTDOWN_ACK_SENT +#define SCTP_STATE_NUM_STATES (SCTP_STATE_MAX + 1) + +/* These are values for sk->state. + * For a UDP-style SCTP socket, the states are defined as follows + * - A socket in SCTP_SS_CLOSED state indicates that it is not willing to + * accept new associations, but it can initiate the creation of new ones. + * - A socket in SCTP_SS_LISTENING state indicates that it is willing to + * accept new associations and can initiate the creation of new ones. + * - A socket in SCTP_SS_ESTABLISHED state indicates that it is a peeled off + * socket with one association. + * For a TCP-style SCTP socket, the states are defined as follows + * - A socket in SCTP_SS_CLOSED state indicates that it is not willing to + * accept new associations, but it can initiate the creation of new ones. + * - A socket in SCTP_SS_LISTENING state indicates that it is willing to + * accept new associations, but cannot initiate the creation of new ones. + * - A socket in SCTP_SS_ESTABLISHED state indicates that it has a single + * association. + */ +typedef enum { + SCTP_SS_CLOSED = TCP_CLOSE, + SCTP_SS_LISTENING = TCP_LISTEN, + SCTP_SS_ESTABLISHING = TCP_SYN_SENT, + SCTP_SS_ESTABLISHED = TCP_ESTABLISHED, + SCTP_SS_DISCONNECTING = TCP_CLOSING, +} sctp_sock_state_t; + +/* These functions map various type to printable names. */ +const char *sctp_cname(const sctp_subtype_t); /* chunk types */ +const char *sctp_oname(const sctp_subtype_t); /* other events */ +const char *sctp_tname(const sctp_subtype_t); /* timeouts */ +const char *sctp_pname(const sctp_subtype_t); /* primitives */ + +/* This is a table of printable names of sctp_state_t's. */ +extern const char *sctp_state_tbl[], *sctp_evttype_tbl[], *sctp_status_tbl[]; + +/* Maximum chunk length considering padding requirements. */ +enum { SCTP_MAX_CHUNK_LEN = ((1<<16) - sizeof(__u32)) }; + +/* Encourage Cookie-Echo bundling by pre-fragmenting chunks a little + * harder (until reaching ESTABLISHED state). + */ +enum { SCTP_ARBITRARY_COOKIE_ECHO_LEN = 200 }; + +/* Guess at how big to make the TSN mapping array. + * We guarantee that we can handle at least this big a gap between the + * cumulative ACK and the highest TSN. In practice, we can often + * handle up to twice this value. + * + * NEVER make this more than 32767 (2^15-1). The Gap Ack Blocks in a + * SACK (see section 3.3.4) are only 16 bits, so 2*SCTP_TSN_MAP_SIZE + * must be less than 65535 (2^16 - 1), or we will have overflow + * problems creating SACK's. + */ +#define SCTP_TSN_MAP_SIZE 2048 +#define SCTP_TSN_MAX_GAP 65535 + +/* We will not record more than this many duplicate TSNs between two + * SACKs. The minimum PMTU is 576. Remove all the headers and there + * is enough room for 131 duplicate reports. Round down to the + * nearest power of 2. + */ +enum { SCTP_MIN_PMTU = 576 }; +enum { SCTP_MAX_DUP_TSNS = 16 }; +enum { SCTP_MAX_GABS = 16 }; + +typedef enum { + SCTP_COUNTER_INIT_ERROR, +} sctp_counter_t; + +/* How many counters does an association need? */ +#define SCTP_NUMBER_COUNTERS 5 + +/* Here we define the default timers. */ + +/* cookie timer def = ? seconds */ +#define SCTP_DEFAULT_TIMEOUT_T1_COOKIE (3 * HZ) + +/* init timer def = 3 seconds */ +#define SCTP_DEFAULT_TIMEOUT_T1_INIT (3 * HZ) + +/* shutdown timer def = 300 ms */ +#define SCTP_DEFAULT_TIMEOUT_T2_SHUTDOWN ((300 * HZ) / 1000) + +/* 0 seconds + RTO */ +#define SCTP_DEFAULT_TIMEOUT_HEARTBEAT (10 * HZ) + +/* recv timer def = 200ms (in usec) */ +#define SCTP_DEFAULT_TIMEOUT_SACK ((200 * HZ) / 1000) +#define SCTP_DEFAULT_TIMEOUT_SACK_MAX ((500 * HZ) / 1000) /* 500 ms */ + +/* RTO.Initial - 3 seconds + * RTO.Min - 1 second + * RTO.Max - 60 seconds + * RTO.Alpha - 1/8 + * RTO.Beta - 1/4 + */ +#define SCTP_RTO_INITIAL (3 * HZ) +#define SCTP_RTO_MIN (1 * HZ) +#define SCTP_RTO_MAX (60 * HZ) + +#define SCTP_RTO_ALPHA 3 /* 1/8 when converted to right shifts. */ +#define SCTP_RTO_BETA 2 /* 1/4 when converted to right shifts. */ + +/* Maximum number of new data packets that can be sent in a burst. */ +#define SCTP_MAX_BURST 4 + +#define SCTP_CLOCK_GRANULARITY 1 /* 1 jiffy */ + +#define SCTP_DEF_MAX_INIT 6 +#define SCTP_DEF_MAX_SEND 10 + +#define SCTP_DEFAULT_COOKIE_LIFE_SEC 60 /* seconds */ +#define SCTP_DEFAULT_COOKIE_LIFE_USEC 0 /* microseconds */ + +#define SCTP_DEFAULT_MINWINDOW 1500 /* default minimum rwnd size */ +#define SCTP_DEFAULT_MAXWINDOW 65535 /* default rwnd size */ +#define SCTP_DEFAULT_MAXSEGMENT 1500 /* MTU size, this is the limit + * to which we will raise the P-MTU. + */ +#define SCTP_DEFAULT_MINSEGMENT 512 /* MTU size ... if no mtu disc */ +#define SCTP_HOW_MANY_SECRETS 2 /* How many secrets I keep */ +#define SCTP_HOW_LONG_COOKIE_LIVE 3600 /* How many seconds the current + * secret will live? + */ +#define SCTP_SECRET_SIZE 32 /* Number of octets in a 256 bits. */ + +#define SCTP_SIGNATURE_SIZE 20 /* size of a SLA-1 signature */ + +#define SCTP_COOKIE_MULTIPLE 32 /* Pad out our cookie to make our hash + * functions simpler to write. + */ + +#if defined (CONFIG_SCTP_HMAC_MD5) +#define SCTP_COOKIE_HMAC_ALG "md5" +#elif defined (CONFIG_SCTP_HMAC_SHA1) +#define SCTP_COOKIE_HMAC_ALG "sha1" +#else +#define SCTP_COOKIE_HMAC_ALG NULL +#endif + +/* These return values describe the success or failure of a number of + * routines which form the lower interface to SCTP_outqueue. + */ +typedef enum { + SCTP_XMIT_OK, + SCTP_XMIT_PMTU_FULL, + SCTP_XMIT_RWND_FULL, + SCTP_XMIT_NAGLE_DELAY, +} sctp_xmit_t; + +/* These are the commands for manipulating transports. */ +typedef enum { + SCTP_TRANSPORT_UP, + SCTP_TRANSPORT_DOWN, +} sctp_transport_cmd_t; + +/* These are the address scopes defined mainly for IPv4 addresses + * based on draft of SCTP IPv4 scoping <draft-stewart-tsvwg-sctp-ipv4-00.txt>. + * These scopes are hopefully generic enough to be used on scoping both + * IPv4 and IPv6 addresses in SCTP. + * At this point, the IPv6 scopes will be mapped to these internal scopes + * as much as possible. + */ +typedef enum { + SCTP_SCOPE_GLOBAL, /* IPv4 global addresses */ + SCTP_SCOPE_PRIVATE, /* IPv4 private addresses */ + SCTP_SCOPE_LINK, /* IPv4 link local address */ + SCTP_SCOPE_LOOPBACK, /* IPv4 loopback address */ + SCTP_SCOPE_UNUSABLE, /* IPv4 unusable addresses */ +} sctp_scope_t; + +/* Based on IPv4 scoping <draft-stewart-tsvwg-sctp-ipv4-00.txt>, + * SCTP IPv4 unusable addresses: 0.0.0.0/8, 224.0.0.0/4, 198.18.0.0/24, + * 192.88.99.0/24. + * Also, RFC 8.4, non-unicast addresses are not considered valid SCTP + * addresses. + */ +#define IS_IPV4_UNUSABLE_ADDRESS(a) \ + ((INADDR_BROADCAST == *a) || \ + (MULTICAST(*a)) || \ + (((unsigned char *)(a))[0] == 0) || \ + ((((unsigned char *)(a))[0] == 198) && \ + (((unsigned char *)(a))[1] == 18) && \ + (((unsigned char *)(a))[2] == 0)) || \ + ((((unsigned char *)(a))[0] == 192) && \ + (((unsigned char *)(a))[1] == 88) && \ + (((unsigned char *)(a))[2] == 99))) + +/* IPv4 Link-local addresses: 169.254.0.0/16. */ +#define IS_IPV4_LINK_ADDRESS(a) \ + ((((unsigned char *)(a))[0] == 169) && \ + (((unsigned char *)(a))[1] == 254)) + +/* RFC 1918 "Address Allocation for Private Internets" defines the IPv4 + * private address space as the following: + * + * 10.0.0.0 - 10.255.255.255 (10/8 prefix) + * 172.16.0.0.0 - 172.31.255.255 (172.16/12 prefix) + * 192.168.0.0 - 192.168.255.255 (192.168/16 prefix) + */ +#define IS_IPV4_PRIVATE_ADDRESS(a) \ + ((((unsigned char *)(a))[0] == 10) || \ + ((((unsigned char *)(a))[0] == 172) && \ + (((unsigned char *)(a))[1] >= 16) && \ + (((unsigned char *)(a))[1] < 32)) || \ + ((((unsigned char *)(a))[0] == 192) && \ + (((unsigned char *)(a))[1] == 168))) + +/* Flags used for the bind address copy functions. */ +#define SCTP_ADDR6_ALLOWED 0x00000001 /* IPv6 address is allowed by + local sock family */ +#define SCTP_ADDR4_PEERSUPP 0x00000002 /* IPv4 address is supported by + peer */ +#define SCTP_ADDR6_PEERSUPP 0x00000004 /* IPv6 address is supported by + peer */ + +/* Reasons to retransmit. */ +typedef enum { + SCTP_RTXR_T3_RTX, + SCTP_RTXR_FAST_RTX, + SCTP_RTXR_PMTUD, +} sctp_retransmit_reason_t; + +/* Reasons to lower cwnd. */ +typedef enum { + SCTP_LOWER_CWND_T3_RTX, + SCTP_LOWER_CWND_FAST_RTX, + SCTP_LOWER_CWND_ECNE, + SCTP_LOWER_CWND_INACTIVE, +} sctp_lower_cwnd_t; + +#endif /* __sctp_constants_h__ */ diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h new file mode 100644 index 000000000000..960abfa48d68 --- /dev/null +++ b/include/net/sctp/sctp.h @@ -0,0 +1,620 @@ +/* SCTP kernel reference Implementation + * (C) Copyright IBM Corp. 2001, 2004 + * Copyright (c) 1999-2000 Cisco, Inc. + * Copyright (c) 1999-2001 Motorola, Inc. + * Copyright (c) 2001-2003 Intel Corp. + * + * This file is part of the SCTP kernel reference Implementation + * + * The base lksctp header. + * + * The SCTP reference implementation is free software; + * you can redistribute it and/or modify it under the terms of + * the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * The SCTP reference implementation is distributed in the hope that it + * will be useful, but WITHOUT ANY WARRANTY; without even the implied + * ************************ + * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * See the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU CC; see the file COPYING. If not, write to + * the Free Software Foundation, 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + * + * Please send any bug reports or fixes you make to the + * email address(es): + * lksctp developers <lksctp-developers@lists.sourceforge.net> + * + * Or submit a bug report through the following website: + * http://www.sf.net/projects/lksctp + * + * Written or modified by: + * La Monte H.P. Yarroll <piggy@acm.org> + * Xingang Guo <xingang.guo@intel.com> + * Jon Grimm <jgrimm@us.ibm.com> + * Daisy Chang <daisyc@us.ibm.com> + * Sridhar Samudrala <sri@us.ibm.com> + * Ardelle Fan <ardelle.fan@intel.com> + * Ryan Layer <rmlayer@us.ibm.com> + * Kevin Gao <kevin.gao@intel.com> + * + * Any bugs reported given to us we will try to fix... any fixes shared will + * be incorporated into the next SCTP release. + */ + +#ifndef __net_sctp_h__ +#define __net_sctp_h__ + +/* Header Strategy. + * Start getting some control over the header file depencies: + * includes + * constants + * structs + * prototypes + * macros, externs, and inlines + * + * Move test_frame specific items out of the kernel headers + * and into the test frame headers. This is not perfect in any sense + * and will continue to evolve. + */ + + +#include <linux/config.h> + +#ifdef TEST_FRAME +#undef CONFIG_PROC_FS +#undef CONFIG_SCTP_DBG_OBJCNT +#undef CONFIG_SYSCTL +#endif /* TEST_FRAME */ + +#include <linux/types.h> +#include <linux/slab.h> +#include <linux/in.h> +#include <linux/tty.h> +#include <linux/proc_fs.h> +#include <linux/spinlock.h> +#include <linux/jiffies.h> +#include <linux/idr.h> + +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) +#include <net/ipv6.h> +#include <net/ip6_route.h> +#endif + +#include <asm/uaccess.h> +#include <asm/page.h> +#include <net/sock.h> +#include <net/snmp.h> +#include <net/sctp/structs.h> +#include <net/sctp/constants.h> + + +/* Set SCTP_DEBUG flag via config if not already set. */ +#ifndef SCTP_DEBUG +#ifdef CONFIG_SCTP_DBG_MSG +#define SCTP_DEBUG 1 +#else +#define SCTP_DEBUG 0 +#endif /* CONFIG_SCTP_DBG */ +#endif /* SCTP_DEBUG */ + +#ifdef CONFIG_IP_SCTP_MODULE +#define SCTP_PROTOSW_FLAG 0 +#else /* static! */ +#define SCTP_PROTOSW_FLAG INET_PROTOSW_PERMANENT +#endif + + +/* Certain internal static functions need to be exported when + * compiled into the test frame. + */ +#ifndef SCTP_STATIC +#define SCTP_STATIC static +#endif + +/* + * Function declarations. + */ + +/* + * sctp/protocol.c + */ +extern struct sock *sctp_get_ctl_sock(void); +extern int sctp_copy_local_addr_list(struct sctp_bind_addr *, + sctp_scope_t, int gfp, int flags); +extern struct sctp_pf *sctp_get_pf_specific(sa_family_t family); +extern int sctp_register_pf(struct sctp_pf *, sa_family_t); + +/* + * sctp/socket.c + */ +int sctp_backlog_rcv(struct sock *sk, struct sk_buff *skb); +int sctp_inet_listen(struct socket *sock, int backlog); +void sctp_write_space(struct sock *sk); +unsigned int sctp_poll(struct file *file, struct socket *sock, + poll_table *wait); + +/* + * sctp/primitive.c + */ +int sctp_primitive_ASSOCIATE(struct sctp_association *, void *arg); +int sctp_primitive_SHUTDOWN(struct sctp_association *, void *arg); +int sctp_primitive_ABORT(struct sctp_association *, void *arg); +int sctp_primitive_SEND(struct sctp_association *, void *arg); +int sctp_primitive_REQUESTHEARTBEAT(struct sctp_association *, void *arg); +int sctp_primitive_ASCONF(struct sctp_association *, void *arg); + +/* + * sctp/crc32c.c + */ +__u32 sctp_start_cksum(__u8 *ptr, __u16 count); +__u32 sctp_update_cksum(__u8 *ptr, __u16 count, __u32 cksum); +__u32 sctp_end_cksum(__u32 cksum); +__u32 sctp_update_copy_cksum(__u8 *, __u8 *, __u16 count, __u32 cksum); + +/* + * sctp/input.c + */ +int sctp_rcv(struct sk_buff *skb); +void sctp_v4_err(struct sk_buff *skb, u32 info); +void sctp_hash_established(struct sctp_association *); +void sctp_unhash_established(struct sctp_association *); +void sctp_hash_endpoint(struct sctp_endpoint *); +void sctp_unhash_endpoint(struct sctp_endpoint *); +struct sock *sctp_err_lookup(int family, struct sk_buff *, + struct sctphdr *, struct sctp_endpoint **, + struct sctp_association **, + struct sctp_transport **); +void sctp_err_finish(struct sock *, struct sctp_endpoint *, + struct sctp_association *); +void sctp_icmp_frag_needed(struct sock *, struct sctp_association *, + struct sctp_transport *t, __u32 pmtu); +void sctp_icmp_proto_unreachable(struct sock *sk, + struct sctp_endpoint *ep, + struct sctp_association *asoc, + struct sctp_transport *t); + +/* + * Section: Macros, externs, and inlines + */ + + +#ifdef TEST_FRAME +#include <test_frame.h> +#else + +/* spin lock wrappers. */ +#define sctp_spin_lock_irqsave(lock, flags) spin_lock_irqsave(lock, flags) +#define sctp_spin_unlock_irqrestore(lock, flags) \ + spin_unlock_irqrestore(lock, flags) +#define sctp_local_bh_disable() local_bh_disable() +#define sctp_local_bh_enable() local_bh_enable() +#define sctp_spin_lock(lock) spin_lock(lock) +#define sctp_spin_unlock(lock) spin_unlock(lock) +#define sctp_write_lock(lock) write_lock(lock) +#define sctp_write_unlock(lock) write_unlock(lock) +#define sctp_read_lock(lock) read_lock(lock) +#define sctp_read_unlock(lock) read_unlock(lock) + +/* sock lock wrappers. */ +#define sctp_lock_sock(sk) lock_sock(sk) +#define sctp_release_sock(sk) release_sock(sk) +#define sctp_bh_lock_sock(sk) bh_lock_sock(sk) +#define sctp_bh_unlock_sock(sk) bh_unlock_sock(sk) +#define SCTP_SOCK_SLEEP_PRE(sk) SOCK_SLEEP_PRE(sk) +#define SCTP_SOCK_SLEEP_POST(sk) SOCK_SLEEP_POST(sk) + +/* SCTP SNMP MIB stats handlers */ +DECLARE_SNMP_STAT(struct sctp_mib, sctp_statistics); +#define SCTP_INC_STATS(field) SNMP_INC_STATS(sctp_statistics, field) +#define SCTP_INC_STATS_BH(field) SNMP_INC_STATS_BH(sctp_statistics, field) +#define SCTP_INC_STATS_USER(field) SNMP_INC_STATS_USER(sctp_statistics, field) +#define SCTP_DEC_STATS(field) SNMP_DEC_STATS(sctp_statistics, field) + +#endif /* !TEST_FRAME */ + + +/* Print debugging messages. */ +#if SCTP_DEBUG +extern int sctp_debug_flag; +#define SCTP_DEBUG_PRINTK(whatever...) \ + ((void) (sctp_debug_flag && printk(KERN_DEBUG whatever))) +#define SCTP_ENABLE_DEBUG { sctp_debug_flag = 1; } +#define SCTP_DISABLE_DEBUG { sctp_debug_flag = 0; } + +#define SCTP_ASSERT(expr, str, func) \ + if (!(expr)) { \ + SCTP_DEBUG_PRINTK("Assertion Failed: %s(%s) at %s:%s:%d\n", \ + str, (#expr), __FILE__, __FUNCTION__, __LINE__); \ + func; \ + } + +#else /* SCTP_DEBUG */ + +#define SCTP_DEBUG_PRINTK(whatever...) +#define SCTP_ENABLE_DEBUG +#define SCTP_DISABLE_DEBUG +#define SCTP_ASSERT(expr, str, func) + +#endif /* SCTP_DEBUG */ + + +/* + * Macros for keeping a global reference of object allocations. + */ +#ifdef CONFIG_SCTP_DBG_OBJCNT + +extern atomic_t sctp_dbg_objcnt_sock; +extern atomic_t sctp_dbg_objcnt_ep; +extern atomic_t sctp_dbg_objcnt_assoc; +extern atomic_t sctp_dbg_objcnt_transport; +extern atomic_t sctp_dbg_objcnt_chunk; +extern atomic_t sctp_dbg_objcnt_bind_addr; +extern atomic_t sctp_dbg_objcnt_bind_bucket; +extern atomic_t sctp_dbg_objcnt_addr; +extern atomic_t sctp_dbg_objcnt_ssnmap; +extern atomic_t sctp_dbg_objcnt_datamsg; + +/* Macros to atomically increment/decrement objcnt counters. */ +#define SCTP_DBG_OBJCNT_INC(name) \ +atomic_inc(&sctp_dbg_objcnt_## name) +#define SCTP_DBG_OBJCNT_DEC(name) \ +atomic_dec(&sctp_dbg_objcnt_## name) +#define SCTP_DBG_OBJCNT(name) \ +atomic_t sctp_dbg_objcnt_## name = ATOMIC_INIT(0) + +/* Macro to help create new entries in in the global array of + * objcnt counters. + */ +#define SCTP_DBG_OBJCNT_ENTRY(name) \ +{.label= #name, .counter= &sctp_dbg_objcnt_## name} + +void sctp_dbg_objcnt_init(void); +void sctp_dbg_objcnt_exit(void); + +#else + +#define SCTP_DBG_OBJCNT_INC(name) +#define SCTP_DBG_OBJCNT_DEC(name) + +static inline void sctp_dbg_objcnt_init(void) { return; } +static inline void sctp_dbg_objcnt_exit(void) { return; } + +#endif /* CONFIG_SCTP_DBG_OBJCOUNT */ + +#if defined CONFIG_SYSCTL +void sctp_sysctl_register(void); +void sctp_sysctl_unregister(void); +#else +static inline void sctp_sysctl_register(void) { return; } +static inline void sctp_sysctl_unregister(void) { return; } +static inline int sctp_sysctl_jiffies_ms(ctl_table *table, int __user *name, int nlen, + void __user *oldval, size_t __user *oldlenp, + void __user *newval, size_t newlen, void **context) { + return -ENOSYS; +} +#endif + +/* Size of Supported Address Parameter for 'x' address types. */ +#define SCTP_SAT_LEN(x) (sizeof(struct sctp_paramhdr) + (x) * sizeof(__u16)) + +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) + +int sctp_v6_init(void); +void sctp_v6_exit(void); + +#else /* #ifdef defined(CONFIG_IPV6) */ + +static inline int sctp_v6_init(void) { return 0; } +static inline void sctp_v6_exit(void) { return; } + +#endif /* #if defined(CONFIG_IPV6) */ + +/* Some wrappers, in case crypto not available. */ +#if defined (CONFIG_CRYPTO_HMAC) +#define sctp_crypto_alloc_tfm crypto_alloc_tfm +#define sctp_crypto_free_tfm crypto_free_tfm +#define sctp_crypto_hmac crypto_hmac +#else +#define sctp_crypto_alloc_tfm(x...) NULL +#define sctp_crypto_free_tfm(x...) +#define sctp_crypto_hmac(x...) +#endif + + +/* Map an association to an assoc_id. */ +static inline sctp_assoc_t sctp_assoc2id(const struct sctp_association *asoc) +{ + return (asoc?asoc->assoc_id:0); +} + +/* Look up the association by its id. */ +struct sctp_association *sctp_id2assoc(struct sock *sk, sctp_assoc_t id); + + +/* A macro to walk a list of skbs. */ +#define sctp_skb_for_each(pos, head, tmp) \ +for (pos = (head)->next;\ + tmp = (pos)->next, pos != ((struct sk_buff *)(head));\ + pos = tmp) + + +/* A helper to append an entire skb list (list) to another (head). */ +static inline void sctp_skb_list_tail(struct sk_buff_head *list, + struct sk_buff_head *head) +{ + unsigned long flags; + + sctp_spin_lock_irqsave(&head->lock, flags); + sctp_spin_lock(&list->lock); + + list_splice((struct list_head *)list, (struct list_head *)head->prev); + + head->qlen += list->qlen; + list->qlen = 0; + + sctp_spin_unlock(&list->lock); + sctp_spin_unlock_irqrestore(&head->lock, flags); +} + +/** + * sctp_list_dequeue - remove from the head of the queue + * @list: list to dequeue from + * + * Remove the head of the list. The head item is + * returned or %NULL if the list is empty. + */ + +static inline struct list_head *sctp_list_dequeue(struct list_head *list) +{ + struct list_head *result = NULL; + + if (list->next != list) { + result = list->next; + list->next = result->next; + list->next->prev = list; + INIT_LIST_HEAD(result); + } + return result; +} + +/* Tests if the list has one and only one entry. */ +static inline int sctp_list_single_entry(struct list_head *head) +{ + return ((head->next != head) && (head->next == head->prev)); +} + +/* Calculate the size (in bytes) occupied by the data of an iovec. */ +static inline size_t get_user_iov_size(struct iovec *iov, int iovlen) +{ + size_t retval = 0; + + for (; iovlen > 0; --iovlen) { + retval += iov->iov_len; + iov++; + } + + return retval; +} + +/* Generate a random jitter in the range of -50% ~ +50% of input RTO. */ +static inline __s32 sctp_jitter(__u32 rto) +{ + static __u32 sctp_rand; + __s32 ret; + + /* Avoid divide by zero. */ + if (!rto) + rto = 1; + + sctp_rand += jiffies; + sctp_rand ^= (sctp_rand << 12); + sctp_rand ^= (sctp_rand >> 20); + + /* Choose random number from 0 to rto, then move to -50% ~ +50% + * of rto. + */ + ret = sctp_rand % rto - (rto >> 1); + return ret; +} + +/* Break down data chunks at this point. */ +static inline int sctp_frag_point(const struct sctp_sock *sp, int pmtu) +{ + int frag = pmtu; + + frag -= sp->pf->af->net_header_len; + frag -= sizeof(struct sctphdr) + sizeof(struct sctp_data_chunk); + + if (sp->user_frag) + frag = min_t(int, frag, sp->user_frag); + + frag = min_t(int, frag, SCTP_MAX_CHUNK_LEN); + + return frag; +} + +/* Walk through a list of TLV parameters. Don't trust the + * individual parameter lengths and instead depend on + * the chunk length to indicate when to stop. Make sure + * there is room for a param header too. + */ +#define sctp_walk_params(pos, chunk, member)\ +_sctp_walk_params((pos), (chunk), WORD_ROUND(ntohs((chunk)->chunk_hdr.length)), member) + +#define _sctp_walk_params(pos, chunk, end, member)\ +for (pos.v = chunk->member;\ + pos.v <= (void *)chunk + end - sizeof(sctp_paramhdr_t) &&\ + pos.v <= (void *)chunk + end - WORD_ROUND(ntohs(pos.p->length)) &&\ + ntohs(pos.p->length) >= sizeof(sctp_paramhdr_t);\ + pos.v += WORD_ROUND(ntohs(pos.p->length))) + +#define sctp_walk_errors(err, chunk_hdr)\ +_sctp_walk_errors((err), (chunk_hdr), ntohs((chunk_hdr)->length)) + +#define _sctp_walk_errors(err, chunk_hdr, end)\ +for (err = (sctp_errhdr_t *)((void *)chunk_hdr + \ + sizeof(sctp_chunkhdr_t));\ + (void *)err <= (void *)chunk_hdr + end - sizeof(sctp_errhdr_t) &&\ + (void *)err <= (void *)chunk_hdr + end - WORD_ROUND(ntohs(err->length)) &&\ + ntohs(err->length) >= sizeof(sctp_errhdr_t); \ + err = (sctp_errhdr_t *)((void *)err + WORD_ROUND(ntohs(err->length)))) + +#define sctp_walk_fwdtsn(pos, chunk)\ +_sctp_walk_fwdtsn((pos), (chunk), ntohs((chunk)->chunk_hdr->length) - sizeof(struct sctp_fwdtsn_chunk)) + +#define _sctp_walk_fwdtsn(pos, chunk, end)\ +for (pos = chunk->subh.fwdtsn_hdr->skip;\ + (void *)pos <= (void *)chunk->subh.fwdtsn_hdr->skip + end - sizeof(struct sctp_fwdtsn_skip);\ + pos++) + +/* Round an int up to the next multiple of 4. */ +#define WORD_ROUND(s) (((s)+3)&~3) + +/* Make a new instance of type. */ +#define t_new(type, flags) (type *)kmalloc(sizeof(type), flags) + +/* Compare two timevals. */ +#define tv_lt(s, t) \ + (s.tv_sec < t.tv_sec || (s.tv_sec == t.tv_sec && s.tv_usec < t.tv_usec)) + +/* Add tv1 to tv2. */ +#define TIMEVAL_ADD(tv1, tv2) \ +({ \ + suseconds_t usecs = (tv2).tv_usec + (tv1).tv_usec; \ + time_t secs = (tv2).tv_sec + (tv1).tv_sec; \ +\ + if (usecs >= 1000000) { \ + usecs -= 1000000; \ + secs++; \ + } \ + (tv2).tv_sec = secs; \ + (tv2).tv_usec = usecs; \ +}) + +/* External references. */ + +extern struct proto sctp_prot; +extern struct proto sctpv6_prot; +extern struct proc_dir_entry *proc_net_sctp; +void sctp_put_port(struct sock *sk); + +extern struct idr sctp_assocs_id; +extern spinlock_t sctp_assocs_id_lock; + +/* Static inline functions. */ + +/* Convert from an IP version number to an Address Family symbol. */ +static inline int ipver2af(__u8 ipver) +{ + switch (ipver) { + case 4: + return AF_INET; + case 6: + return AF_INET6; + default: + return 0; + }; +} + +/* Convert from an address parameter type to an address family. */ +static inline int param_type2af(__u16 type) +{ + switch (type) { + case SCTP_PARAM_IPV4_ADDRESS: + return AF_INET; + case SCTP_PARAM_IPV6_ADDRESS: + return AF_INET6; + default: + return 0; + }; +} + +/* Perform some sanity checks. */ +static inline int sctp_sanity_check(void) +{ + SCTP_ASSERT(sizeof(struct sctp_ulpevent) <= + sizeof(((struct sk_buff *)0)->cb), + "SCTP: ulpevent does not fit in skb!\n", return 0); + + return 1; +} + +/* Warning: The following hash functions assume a power of two 'size'. */ +/* This is the hash function for the SCTP port hash table. */ +static inline int sctp_phashfn(__u16 lport) +{ + return (lport & (sctp_port_hashsize - 1)); +} + +/* This is the hash function for the endpoint hash table. */ +static inline int sctp_ep_hashfn(__u16 lport) +{ + return (lport & (sctp_ep_hashsize - 1)); +} + +/* This is the hash function for the association hash table. */ +static inline int sctp_assoc_hashfn(__u16 lport, __u16 rport) +{ + int h = (lport << 16) + rport; + h ^= h>>8; + return (h & (sctp_assoc_hashsize - 1)); +} + +/* This is the hash function for the association hash table. This is + * not used yet, but could be used as a better hash function when + * we have a vtag. + */ +static inline int sctp_vtag_hashfn(__u16 lport, __u16 rport, __u32 vtag) +{ + int h = (lport << 16) + rport; + h ^= vtag; + return (h & (sctp_assoc_hashsize-1)); +} + +/* Is a socket of this style? */ +#define sctp_style(sk, style) __sctp_style((sk), (SCTP_SOCKET_##style)) +static inline int __sctp_style(const struct sock *sk, sctp_socket_type_t style) +{ + return sctp_sk(sk)->type == style; +} + +/* Is the association in this state? */ +#define sctp_state(asoc, state) __sctp_state((asoc), (SCTP_STATE_##state)) +static inline int __sctp_state(const struct sctp_association *asoc, + sctp_state_t state) +{ + return asoc->state == state; +} + +/* Is the socket in this state? */ +#define sctp_sstate(sk, state) __sctp_sstate((sk), (SCTP_SS_##state)) +static inline int __sctp_sstate(const struct sock *sk, sctp_sock_state_t state) +{ + return sk->sk_state == state; +} + +/* Map v4-mapped v6 address back to v4 address */ +static inline void sctp_v6_map_v4(union sctp_addr *addr) +{ + addr->v4.sin_family = AF_INET; + addr->v4.sin_port = addr->v6.sin6_port; + addr->v4.sin_addr.s_addr = addr->v6.sin6_addr.s6_addr32[3]; +} + +/* Map v4 address to v4-mapped v6 address */ +static inline void sctp_v4_map_v6(union sctp_addr *addr) +{ + addr->v6.sin6_family = AF_INET6; + addr->v6.sin6_port = addr->v4.sin_port; + addr->v6.sin6_addr.s6_addr32[3] = addr->v4.sin_addr.s_addr; + addr->v6.sin6_addr.s6_addr32[0] = 0; + addr->v6.sin6_addr.s6_addr32[1] = 0; + addr->v6.sin6_addr.s6_addr32[2] = htonl(0x0000ffff); +} + +#endif /* __net_sctp_h__ */ diff --git a/include/net/sctp/sm.h b/include/net/sctp/sm.h new file mode 100644 index 000000000000..5576db56324d --- /dev/null +++ b/include/net/sctp/sm.h @@ -0,0 +1,442 @@ +/* SCTP kernel reference Implementation + * (C) Copyright IBM Corp. 2001, 2004 + * Copyright (c) 1999-2000 Cisco, Inc. + * Copyright (c) 1999-2001 Motorola, Inc. + * Copyright (c) 2001 Intel Corp. + * + * This file is part of the SCTP kernel reference Implementation + * + * These are definitions needed by the state machine. + * + * The SCTP reference implementation is free software; + * you can redistribute it and/or modify it under the terms of + * the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * The SCTP reference implementation is distributed in the hope that it + * will be useful, but WITHOUT ANY WARRANTY; without even the implied + * ************************ + * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * See the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU CC; see the file COPYING. If not, write to + * the Free Software Foundation, 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + * + * Please send any bug reports or fixes you make to the + * email addresses: + * lksctp developers <lksctp-developers@lists.sourceforge.net> + * + * Or submit a bug report through the following website: + * http://www.sf.net/projects/lksctp + * + * Written or modified by: + * La Monte H.P. Yarroll <piggy@acm.org> + * Karl Knutson <karl@athena.chicago.il.us> + * Xingang Guo <xingang.guo@intel.com> + * Jon Grimm <jgrimm@us.ibm.com> + * Dajiang Zhang <dajiang.zhang@nokia.com> + * Sridhar Samudrala <sri@us.ibm.com> + * Daisy Chang <daisyc@us.ibm.com> + * Ardelle Fan <ardelle.fan@intel.com> + * Kevin Gao <kevin.gao@intel.com> + * + * Any bugs reported given to us we will try to fix... any fixes shared will + * be incorporated into the next SCTP release. + */ + +#include <linux/types.h> +#include <linux/compiler.h> +#include <linux/slab.h> +#include <linux/in.h> +#include <net/sctp/command.h> +#include <net/sctp/sctp.h> + +#ifndef __sctp_sm_h__ +#define __sctp_sm_h__ + +/* + * Possible values for the disposition are: + */ +typedef enum { + SCTP_DISPOSITION_DISCARD, /* No further processing. */ + SCTP_DISPOSITION_CONSUME, /* Process return values normally. */ + SCTP_DISPOSITION_NOMEM, /* We ran out of memory--recover. */ + SCTP_DISPOSITION_DELETE_TCB, /* Close the association. */ + SCTP_DISPOSITION_ABORT, /* Close the association NOW. */ + SCTP_DISPOSITION_VIOLATION, /* The peer is misbehaving. */ + SCTP_DISPOSITION_NOT_IMPL, /* This entry is not implemented. */ + SCTP_DISPOSITION_ERROR, /* This is plain old user error. */ + SCTP_DISPOSITION_BUG, /* This is a bug. */ +} sctp_disposition_t; + +typedef struct { + int name; + int action; +} sctp_sm_command_t; + +typedef sctp_disposition_t (sctp_state_fn_t) (const struct sctp_endpoint *, + const struct sctp_association *, + const sctp_subtype_t type, + void *arg, + sctp_cmd_seq_t *); +typedef void (sctp_timer_event_t) (unsigned long); +typedef struct { + sctp_state_fn_t *fn; + const char *name; +} sctp_sm_table_entry_t; + +/* A naming convention of "sctp_sf_xxx" applies to all the state functions + * currently in use. + */ + +/* Prototypes for generic state functions. */ +sctp_state_fn_t sctp_sf_not_impl; +sctp_state_fn_t sctp_sf_bug; + +/* Prototypes for gener timer state functions. */ +sctp_state_fn_t sctp_sf_timer_ignore; + +/* Prototypes for chunk state functions. */ +sctp_state_fn_t sctp_sf_do_9_1_abort; +sctp_state_fn_t sctp_sf_cookie_wait_abort; +sctp_state_fn_t sctp_sf_cookie_echoed_abort; +sctp_state_fn_t sctp_sf_shutdown_pending_abort; +sctp_state_fn_t sctp_sf_shutdown_sent_abort; +sctp_state_fn_t sctp_sf_shutdown_ack_sent_abort; +sctp_state_fn_t sctp_sf_do_5_1B_init; +sctp_state_fn_t sctp_sf_do_5_1C_ack; +sctp_state_fn_t sctp_sf_do_5_1D_ce; +sctp_state_fn_t sctp_sf_do_5_1E_ca; +sctp_state_fn_t sctp_sf_do_4_C; +sctp_state_fn_t sctp_sf_eat_data_6_2; +sctp_state_fn_t sctp_sf_eat_data_fast_4_4; +sctp_state_fn_t sctp_sf_eat_sack_6_2; +sctp_state_fn_t sctp_sf_tabort_8_4_8; +sctp_state_fn_t sctp_sf_operr_notify; +sctp_state_fn_t sctp_sf_t1_timer_expire; +sctp_state_fn_t sctp_sf_t2_timer_expire; +sctp_state_fn_t sctp_sf_t4_timer_expire; +sctp_state_fn_t sctp_sf_t5_timer_expire; +sctp_state_fn_t sctp_sf_sendbeat_8_3; +sctp_state_fn_t sctp_sf_beat_8_3; +sctp_state_fn_t sctp_sf_backbeat_8_3; +sctp_state_fn_t sctp_sf_do_9_2_final; +sctp_state_fn_t sctp_sf_do_9_2_shutdown; +sctp_state_fn_t sctp_sf_do_ecn_cwr; +sctp_state_fn_t sctp_sf_do_ecne; +sctp_state_fn_t sctp_sf_ootb; +sctp_state_fn_t sctp_sf_pdiscard; +sctp_state_fn_t sctp_sf_violation; +sctp_state_fn_t sctp_sf_violation_chunklen; +sctp_state_fn_t sctp_sf_discard_chunk; +sctp_state_fn_t sctp_sf_do_5_2_1_siminit; +sctp_state_fn_t sctp_sf_do_5_2_2_dupinit; +sctp_state_fn_t sctp_sf_do_5_2_4_dupcook; +sctp_state_fn_t sctp_sf_unk_chunk; +sctp_state_fn_t sctp_sf_do_8_5_1_E_sa; +sctp_state_fn_t sctp_sf_cookie_echoed_err; +sctp_state_fn_t sctp_sf_do_asconf; +sctp_state_fn_t sctp_sf_do_asconf_ack; +sctp_state_fn_t sctp_sf_do_9_2_reshutack; +sctp_state_fn_t sctp_sf_eat_fwd_tsn; +sctp_state_fn_t sctp_sf_eat_fwd_tsn_fast; + +/* Prototypes for primitive event state functions. */ +sctp_state_fn_t sctp_sf_do_prm_asoc; +sctp_state_fn_t sctp_sf_do_prm_send; +sctp_state_fn_t sctp_sf_do_9_2_prm_shutdown; +sctp_state_fn_t sctp_sf_cookie_wait_prm_shutdown; +sctp_state_fn_t sctp_sf_cookie_echoed_prm_shutdown; +sctp_state_fn_t sctp_sf_do_9_1_prm_abort; +sctp_state_fn_t sctp_sf_cookie_wait_prm_abort; +sctp_state_fn_t sctp_sf_cookie_echoed_prm_abort; +sctp_state_fn_t sctp_sf_shutdown_pending_prm_abort; +sctp_state_fn_t sctp_sf_shutdown_sent_prm_abort; +sctp_state_fn_t sctp_sf_shutdown_ack_sent_prm_abort; +sctp_state_fn_t sctp_sf_error_closed; +sctp_state_fn_t sctp_sf_error_shutdown; +sctp_state_fn_t sctp_sf_ignore_primitive; +sctp_state_fn_t sctp_sf_do_prm_requestheartbeat; +sctp_state_fn_t sctp_sf_do_prm_asconf; + +/* Prototypes for other event state functions. */ +sctp_state_fn_t sctp_sf_do_9_2_start_shutdown; +sctp_state_fn_t sctp_sf_do_9_2_shutdown_ack; +sctp_state_fn_t sctp_sf_ignore_other; +sctp_state_fn_t sctp_sf_cookie_wait_icmp_abort; + +/* Prototypes for timeout event state functions. */ +sctp_state_fn_t sctp_sf_do_6_3_3_rtx; +sctp_state_fn_t sctp_sf_do_6_2_sack; +sctp_state_fn_t sctp_sf_autoclose_timer_expire; + +/* Prototypes for utility support functions. */ +__u8 sctp_get_chunk_type(struct sctp_chunk *chunk); +const sctp_sm_table_entry_t *sctp_sm_lookup_event(sctp_event_t, + sctp_state_t, + sctp_subtype_t); +int sctp_chunk_iif(const struct sctp_chunk *); +struct sctp_association *sctp_make_temp_asoc(const struct sctp_endpoint *, + struct sctp_chunk *, + int gfp); +__u32 sctp_generate_verification_tag(void); +void sctp_populate_tie_tags(__u8 *cookie, __u32 curTag, __u32 hisTag); + +/* Prototypes for chunk-building functions. */ +struct sctp_chunk *sctp_make_init(const struct sctp_association *, + const struct sctp_bind_addr *, + int gfp, int vparam_len); +struct sctp_chunk *sctp_make_init_ack(const struct sctp_association *, + const struct sctp_chunk *, + const int gfp, + const int unkparam_len); +struct sctp_chunk *sctp_make_cookie_echo(const struct sctp_association *, + const struct sctp_chunk *); +struct sctp_chunk *sctp_make_cookie_ack(const struct sctp_association *, + const struct sctp_chunk *); +struct sctp_chunk *sctp_make_cwr(const struct sctp_association *, + const __u32 lowest_tsn, + const struct sctp_chunk *); +struct sctp_chunk * sctp_make_datafrag_empty(struct sctp_association *, + const struct sctp_sndrcvinfo *sinfo, + int len, const __u8 flags, + __u16 ssn); +struct sctp_chunk *sctp_make_ecne(const struct sctp_association *, + const __u32); +struct sctp_chunk *sctp_make_sack(const struct sctp_association *); +struct sctp_chunk *sctp_make_shutdown(const struct sctp_association *asoc, + const struct sctp_chunk *chunk); +struct sctp_chunk *sctp_make_shutdown_ack(const struct sctp_association *asoc, + const struct sctp_chunk *); +struct sctp_chunk *sctp_make_shutdown_complete(const struct sctp_association *, + const struct sctp_chunk *); +void sctp_init_cause(struct sctp_chunk *, __u16 cause, const void *, size_t); +struct sctp_chunk *sctp_make_abort(const struct sctp_association *, + const struct sctp_chunk *, + const size_t hint); +struct sctp_chunk *sctp_make_abort_no_data(const struct sctp_association *, + const struct sctp_chunk *, + __u32 tsn); +struct sctp_chunk *sctp_make_abort_user(const struct sctp_association *, + const struct sctp_chunk *, + const struct msghdr *); +struct sctp_chunk *sctp_make_abort_violation(const struct sctp_association *, + const struct sctp_chunk *, + const __u8 *, + const size_t ); +struct sctp_chunk *sctp_make_heartbeat(const struct sctp_association *, + const struct sctp_transport *, + const void *payload, + const size_t paylen); +struct sctp_chunk *sctp_make_heartbeat_ack(const struct sctp_association *, + const struct sctp_chunk *, + const void *payload, + const size_t paylen); +struct sctp_chunk *sctp_make_op_error(const struct sctp_association *, + const struct sctp_chunk *chunk, + __u16 cause_code, + const void *payload, + size_t paylen); + +struct sctp_chunk *sctp_make_asconf_update_ip(struct sctp_association *, + union sctp_addr *, + struct sockaddr *, + int, __u16); +struct sctp_chunk *sctp_make_asconf_set_prim(struct sctp_association *asoc, + union sctp_addr *addr); +struct sctp_chunk *sctp_process_asconf(struct sctp_association *asoc, + struct sctp_chunk *asconf); +int sctp_process_asconf_ack(struct sctp_association *asoc, + struct sctp_chunk *asconf_ack); +struct sctp_chunk *sctp_make_fwdtsn(const struct sctp_association *asoc, + __u32 new_cum_tsn, size_t nstreams, + struct sctp_fwdtsn_skip *skiplist); + +void sctp_chunk_assign_tsn(struct sctp_chunk *); +void sctp_chunk_assign_ssn(struct sctp_chunk *); + +void sctp_stop_t1_and_abort(sctp_cmd_seq_t *commands, __u16 error); + +/* Prototypes for statetable processing. */ + +int sctp_do_sm(sctp_event_t event_type, sctp_subtype_t subtype, + sctp_state_t state, + struct sctp_endpoint *, + struct sctp_association *asoc, + void *event_arg, + int gfp); + +/* 2nd level prototypes */ +void sctp_generate_t3_rtx_event(unsigned long peer); +void sctp_generate_heartbeat_event(unsigned long peer); + +void sctp_ootb_pkt_free(struct sctp_packet *); + +struct sctp_association *sctp_unpack_cookie(const struct sctp_endpoint *, + const struct sctp_association *, + struct sctp_chunk *, int gfp, int *err, + struct sctp_chunk **err_chk_p); +int sctp_addip_addr_config(struct sctp_association *, sctp_param_t, + struct sockaddr_storage*, int); + +/* 3rd level prototypes */ +__u32 sctp_generate_tag(const struct sctp_endpoint *); +__u32 sctp_generate_tsn(const struct sctp_endpoint *); + +/* Extern declarations for major data structures. */ +extern sctp_timer_event_t *sctp_timer_events[SCTP_NUM_TIMEOUT_TYPES]; + + +/* Get the size of a DATA chunk payload. */ +static inline __u16 sctp_data_size(struct sctp_chunk *chunk) +{ + __u16 size; + + size = ntohs(chunk->chunk_hdr->length); + size -= sizeof(sctp_data_chunk_t); + + return size; +} + +/* Compare two TSNs */ + +/* RFC 1982 - Serial Number Arithmetic + * + * 2. Comparison + * Then, s1 is said to be equal to s2 if and only if i1 is equal to i2, + * in all other cases, s1 is not equal to s2. + * + * s1 is said to be less than s2 if, and only if, s1 is not equal to s2, + * and + * + * (i1 < i2 and i2 - i1 < 2^(SERIAL_BITS - 1)) or + * (i1 > i2 and i1 - i2 > 2^(SERIAL_BITS - 1)) + * + * s1 is said to be greater than s2 if, and only if, s1 is not equal to + * s2, and + * + * (i1 < i2 and i2 - i1 > 2^(SERIAL_BITS - 1)) or + * (i1 > i2 and i1 - i2 < 2^(SERIAL_BITS - 1)) + */ + +/* + * RFC 2960 + * 1.6 Serial Number Arithmetic + * + * Comparisons and arithmetic on TSNs in this document SHOULD use Serial + * Number Arithmetic as defined in [RFC1982] where SERIAL_BITS = 32. + */ + +enum { + TSN_SIGN_BIT = (1<<31) +}; + +static inline int TSN_lt(__u32 s, __u32 t) +{ + return (((s) - (t)) & TSN_SIGN_BIT); +} + +static inline int TSN_lte(__u32 s, __u32 t) +{ + return (((s) == (t)) || (((s) - (t)) & TSN_SIGN_BIT)); +} + +/* Compare two SSNs */ + +/* + * RFC 2960 + * 1.6 Serial Number Arithmetic + * + * Comparisons and arithmetic on Stream Sequence Numbers in this document + * SHOULD use Serial Number Arithmetic as defined in [RFC1982] where + * SERIAL_BITS = 16. + */ +enum { + SSN_SIGN_BIT = (1<<15) +}; + +static inline int SSN_lt(__u16 s, __u16 t) +{ + return (((s) - (t)) & SSN_SIGN_BIT); +} + +static inline int SSN_lte(__u16 s, __u16 t) +{ + return (((s) == (t)) || (((s) - (t)) & SSN_SIGN_BIT)); +} + +/* + * ADDIP 3.1.1 + * The valid range of Serial Number is from 0 to 4294967295 (2**32 - 1). Serial + * Numbers wrap back to 0 after reaching 4294967295. + */ +enum { + ADDIP_SERIAL_SIGN_BIT = (1<<31) +}; + +static inline int ADDIP_SERIAL_gte(__u16 s, __u16 t) +{ + return (((s) == (t)) || (((t) - (s)) & ADDIP_SERIAL_SIGN_BIT)); +} + + +/* Run sctp_add_cmd() generating a BUG() if there is a failure. */ +static inline void sctp_add_cmd_sf(sctp_cmd_seq_t *seq, sctp_verb_t verb, sctp_arg_t obj) +{ + if (unlikely(!sctp_add_cmd(seq, verb, obj))) + BUG(); +} + +/* Check VTAG of the packet matches the sender's own tag. */ +static inline int +sctp_vtag_verify(const struct sctp_chunk *chunk, + const struct sctp_association *asoc) +{ + /* RFC 2960 Sec 8.5 When receiving an SCTP packet, the endpoint + * MUST ensure that the value in the Verification Tag field of + * the received SCTP packet matches its own Tag. If the received + * Verification Tag value does not match the receiver's own + * tag value, the receiver shall silently discard the packet... + */ + if (ntohl(chunk->sctp_hdr->vtag) == asoc->c.my_vtag) + return 1; + + return 0; +} + +/* Check VTAG of the packet matches the sender's own tag OR its peer's + * tag and the T bit is set in the Chunk Flags. + */ +static inline int +sctp_vtag_verify_either(const struct sctp_chunk *chunk, + const struct sctp_association *asoc) +{ + /* RFC 2960 Section 8.5.1, sctpimpguide-06 Section 2.13.2 + * + * B) The receiver of a ABORT shall accept the packet if the + * Verification Tag field of the packet matches its own tag OR it + * is set to its peer's tag and the T bit is set in the Chunk + * Flags. Otherwise, the receiver MUST silently discard the packet + * and take no further action. + * + * (C) The receiver of a SHUTDOWN COMPLETE shall accept the + * packet if the Verification Tag field of the packet + * matches its own tag OR it is set to its peer's tag and + * the T bit is set in the Chunk Flags. Otherwise, the + * receiver MUST silently discard the packet and take no + * further action.... + * + */ + if ((ntohl(chunk->sctp_hdr->vtag) == asoc->c.my_vtag) || + (sctp_test_T_bit(chunk) && (ntohl(chunk->sctp_hdr->vtag) + == asoc->c.peer_vtag))) { + return 1; + } + + return 0; +} + +#endif /* __sctp_sm_h__ */ diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h new file mode 100644 index 000000000000..7e64cf6bda1e --- /dev/null +++ b/include/net/sctp/structs.h @@ -0,0 +1,1752 @@ +/* SCTP kernel reference Implementation + * (C) Copyright IBM Corp. 2001, 2004 + * Copyright (c) 1999-2000 Cisco, Inc. + * Copyright (c) 1999-2001 Motorola, Inc. + * Copyright (c) 2001 Intel Corp. + * + * This file is part of the SCTP kernel reference Implementation + * + * The SCTP reference implementation is free software; + * you can redistribute it and/or modify it under the terms of + * the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * The SCTP reference implementation is distributed in the hope that it + * will be useful, but WITHOUT ANY WARRANTY; without even the implied + * ************************ + * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * See the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU CC; see the file COPYING. If not, write to + * the Free Software Foundation, 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + * + * Please send any bug reports or fixes you make to the + * email addresses: + * lksctp developers <lksctp-developers@lists.sourceforge.net> + * + * Or submit a bug report through the following website: + * http://www.sf.net/projects/lksctp + * + * Written or modified by: + * Randall Stewart <randall@sctp.chicago.il.us> + * Ken Morneau <kmorneau@cisco.com> + * Qiaobing Xie <qxie1@email.mot.com> + * La Monte H.P. Yarroll <piggy@acm.org> + * Karl Knutson <karl@athena.chicago.il.us> + * Jon Grimm <jgrimm@us.ibm.com> + * Xingang Guo <xingang.guo@intel.com> + * Hui Huang <hui.huang@nokia.com> + * Sridhar Samudrala <sri@us.ibm.com> + * Daisy Chang <daisyc@us.ibm.com> + * Dajiang Zhang <dajiang.zhang@nokia.com> + * Ardelle Fan <ardelle.fan@intel.com> + * Ryan Layer <rmlayer@us.ibm.com> + * Anup Pemmaiah <pemmaiah@cc.usu.edu> + * Kevin Gao <kevin.gao@intel.com> + * + * Any bugs reported given to us we will try to fix... any fixes shared will + * be incorporated into the next SCTP release. + */ + +#ifndef __sctp_structs_h__ +#define __sctp_structs_h__ + +#include <linux/time.h> /* We get struct timespec. */ +#include <linux/socket.h> /* linux/in.h needs this!! */ +#include <linux/in.h> /* We get struct sockaddr_in. */ +#include <linux/in6.h> /* We get struct in6_addr */ +#include <linux/ipv6.h> +#include <asm/param.h> /* We get MAXHOSTNAMELEN. */ +#include <asm/atomic.h> /* This gets us atomic counters. */ +#include <linux/skbuff.h> /* We need sk_buff_head. */ +#include <linux/workqueue.h> /* We need tq_struct. */ +#include <linux/sctp.h> /* We need sctp* header structs. */ + +/* A convenience structure for handling sockaddr structures. + * We should wean ourselves off this. + */ +union sctp_addr { + struct sockaddr_in v4; + struct sockaddr_in6 v6; + struct sockaddr sa; +}; + +/* Forward declarations for data structures. */ +struct sctp_globals; +struct sctp_endpoint; +struct sctp_association; +struct sctp_transport; +struct sctp_packet; +struct sctp_chunk; +struct sctp_inq; +struct sctp_outq; +struct sctp_bind_addr; +struct sctp_ulpq; +struct sctp_ep_common; +struct sctp_ssnmap; + + +#include <net/sctp/tsnmap.h> +#include <net/sctp/ulpevent.h> +#include <net/sctp/ulpqueue.h> + +/* Structures useful for managing bind/connect. */ + +struct sctp_bind_bucket { + unsigned short port; + unsigned short fastreuse; + struct sctp_bind_bucket *next; + struct sctp_bind_bucket **pprev; + struct hlist_head owner; +}; + +struct sctp_bind_hashbucket { + spinlock_t lock; + struct sctp_bind_bucket *chain; +}; + +/* Used for hashing all associations. */ +struct sctp_hashbucket { + rwlock_t lock; + struct sctp_ep_common *chain; +} __attribute__((__aligned__(8))); + + +/* The SCTP globals structure. */ +extern struct sctp_globals { + /* RFC2960 Section 14. Suggested SCTP Protocol Parameter Values + * + * The following protocol parameters are RECOMMENDED: + * + * RTO.Initial - 3 seconds + * RTO.Min - 1 second + * RTO.Max - 60 seconds + * RTO.Alpha - 1/8 (3 when converted to right shifts.) + * RTO.Beta - 1/4 (2 when converted to right shifts.) + */ + __u32 rto_initial; + __u32 rto_min; + __u32 rto_max; + + /* Note: rto_alpha and rto_beta are really defined as inverse + * powers of two to facilitate integer operations. + */ + int rto_alpha; + int rto_beta; + + /* Max.Burst - 4 */ + int max_burst; + + /* Valid.Cookie.Life - 60 seconds */ + int valid_cookie_life; + + /* Whether Cookie Preservative is enabled(1) or not(0) */ + int cookie_preserve_enable; + + /* Association.Max.Retrans - 10 attempts + * Path.Max.Retrans - 5 attempts (per destination address) + * Max.Init.Retransmits - 8 attempts + */ + int max_retrans_association; + int max_retrans_path; + int max_retrans_init; + + /* HB.interval - 30 seconds */ + int hb_interval; + + /* The following variables are implementation specific. */ + + /* Default initialization values to be applied to new associations. */ + __u16 max_instreams; + __u16 max_outstreams; + + /* This is a list of groups of functions for each address + * family that we support. + */ + struct list_head address_families; + + /* This is the hash of all endpoints. */ + int ep_hashsize; + struct sctp_hashbucket *ep_hashtable; + + /* This is the hash of all associations. */ + int assoc_hashsize; + struct sctp_hashbucket *assoc_hashtable; + + /* This is the sctp port control hash. */ + int port_hashsize; + int port_rover; + spinlock_t port_alloc_lock; /* Protects port_rover. */ + struct sctp_bind_hashbucket *port_hashtable; + + /* This is the global local address list. + * We actively maintain this complete list of interfaces on + * the system by catching routing events. + * + * It is a list of sctp_sockaddr_entry. + */ + struct list_head local_addr_list; + spinlock_t local_addr_lock; + + /* Flag to indicate if addip is enabled. */ + int addip_enable; + + /* Flag to indicate if PR-SCTP is enabled. */ + int prsctp_enable; +} sctp_globals; + +#define sctp_rto_initial (sctp_globals.rto_initial) +#define sctp_rto_min (sctp_globals.rto_min) +#define sctp_rto_max (sctp_globals.rto_max) +#define sctp_rto_alpha (sctp_globals.rto_alpha) +#define sctp_rto_beta (sctp_globals.rto_beta) +#define sctp_max_burst (sctp_globals.max_burst) +#define sctp_valid_cookie_life (sctp_globals.valid_cookie_life) +#define sctp_cookie_preserve_enable (sctp_globals.cookie_preserve_enable) +#define sctp_max_retrans_association (sctp_globals.max_retrans_association) +#define sctp_max_retrans_path (sctp_globals.max_retrans_path) +#define sctp_max_retrans_init (sctp_globals.max_retrans_init) +#define sctp_hb_interval (sctp_globals.hb_interval) +#define sctp_max_instreams (sctp_globals.max_instreams) +#define sctp_max_outstreams (sctp_globals.max_outstreams) +#define sctp_address_families (sctp_globals.address_families) +#define sctp_ep_hashsize (sctp_globals.ep_hashsize) +#define sctp_ep_hashtable (sctp_globals.ep_hashtable) +#define sctp_assoc_hashsize (sctp_globals.assoc_hashsize) +#define sctp_assoc_hashtable (sctp_globals.assoc_hashtable) +#define sctp_port_hashsize (sctp_globals.port_hashsize) +#define sctp_port_rover (sctp_globals.port_rover) +#define sctp_port_alloc_lock (sctp_globals.port_alloc_lock) +#define sctp_port_hashtable (sctp_globals.port_hashtable) +#define sctp_local_addr_list (sctp_globals.local_addr_list) +#define sctp_local_addr_lock (sctp_globals.local_addr_lock) +#define sctp_addip_enable (sctp_globals.addip_enable) +#define sctp_prsctp_enable (sctp_globals.prsctp_enable) + +/* SCTP Socket type: UDP or TCP style. */ +typedef enum { + SCTP_SOCKET_UDP = 0, + SCTP_SOCKET_UDP_HIGH_BANDWIDTH, + SCTP_SOCKET_TCP +} sctp_socket_type_t; + +/* Per socket SCTP information. */ +struct sctp_sock { + /* inet_sock has to be the first member of sctp_sock */ + struct inet_sock inet; + /* What kind of a socket is this? */ + sctp_socket_type_t type; + + /* PF_ family specific functions. */ + struct sctp_pf *pf; + + /* Access to HMAC transform. */ + struct crypto_tfm *hmac; + + /* What is our base endpointer? */ + struct sctp_endpoint *ep; + + struct sctp_bind_bucket *bind_hash; + /* Various Socket Options. */ + __u16 default_stream; + __u32 default_ppid; + __u16 default_flags; + __u32 default_context; + __u32 default_timetolive; + + struct sctp_initmsg initmsg; + struct sctp_rtoinfo rtoinfo; + struct sctp_paddrparams paddrparam; + struct sctp_event_subscribe subscribe; + struct sctp_assocparams assocparams; + int user_frag; + __u32 autoclose; + __u8 nodelay; + __u8 disable_fragments; + __u8 pd_mode; + __u8 v4mapped; + __u32 adaption_ind; + + /* Receive to here while partial delivery is in effect. */ + struct sk_buff_head pd_lobby; +}; + +static inline struct sctp_sock *sctp_sk(const struct sock *sk) +{ + return (struct sctp_sock *)sk; +} + +static inline struct sock *sctp_opt2sk(const struct sctp_sock *sp) +{ + return (struct sock *)sp; +} + +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) +struct sctp6_sock { + struct sctp_sock sctp; + struct ipv6_pinfo inet6; +}; +#endif /* CONFIG_IPV6 */ + + +/* This is our APPLICATION-SPECIFIC state cookie. + * THIS IS NOT DICTATED BY THE SPECIFICATION. + */ +/* These are the parts of an association which we send in the cookie. + * Most of these are straight out of: + * RFC2960 12.2 Parameters necessary per association (i.e. the TCB) + * + */ + +struct sctp_cookie { + + /* My : Tag expected in every inbound packet and sent + * Verification: in the INIT or INIT ACK chunk. + * Tag : + */ + __u32 my_vtag; + + /* Peer's : Tag expected in every outbound packet except + * Verification: in the INIT chunk. + * Tag : + */ + __u32 peer_vtag; + + /* The rest of these are not from the spec, but really need to + * be in the cookie. + */ + + /* My Tie Tag : Assist in discovering a restarting association. */ + __u32 my_ttag; + + /* Peer's Tie Tag: Assist in discovering a restarting association. */ + __u32 peer_ttag; + + /* When does this cookie expire? */ + struct timeval expiration; + + /* Number of inbound/outbound streams which are set + * and negotiated during the INIT process. + */ + __u16 sinit_num_ostreams; + __u16 sinit_max_instreams; + + /* This is the first sequence number I used. */ + __u32 initial_tsn; + + /* This holds the originating address of the INIT packet. */ + union sctp_addr peer_addr; + + /* IG Section 2.35.3 + * Include the source port of the INIT-ACK + */ + __u16 my_port; + + __u8 prsctp_capable; + + /* Padding for future use */ + __u8 padding; + + __u32 adaption_ind; + + + /* This is a shim for my peer's INIT packet, followed by + * a copy of the raw address list of the association. + * The length of the raw address list is saved in the + * raw_addr_list_len field, which will be used at the time when + * the association TCB is re-constructed from the cookie. + */ + __u32 raw_addr_list_len; + struct sctp_init_chunk peer_init[0]; +}; + + +/* The format of our cookie that we send to our peer. */ +struct sctp_signed_cookie { + __u8 signature[SCTP_SECRET_SIZE]; + struct sctp_cookie c; +}; + +/* This is another convenience type to allocate memory for address + * params for the maximum size and pass such structures around + * internally. + */ +union sctp_addr_param { + struct sctp_ipv4addr_param v4; + struct sctp_ipv6addr_param v6; +}; + +/* A convenience type to allow walking through the various + * parameters and avoid casting all over the place. + */ +union sctp_params { + void *v; + struct sctp_paramhdr *p; + struct sctp_cookie_preserve_param *life; + struct sctp_hostname_param *dns; + struct sctp_cookie_param *cookie; + struct sctp_supported_addrs_param *sat; + struct sctp_ipv4addr_param *v4; + struct sctp_ipv6addr_param *v6; + union sctp_addr_param *addr; + struct sctp_adaption_ind_param *aind; +}; + +/* RFC 2960. Section 3.3.5 Heartbeat. + * Heartbeat Information: variable length + * The Sender-specific Heartbeat Info field should normally include + * information about the sender's current time when this HEARTBEAT + * chunk is sent and the destination transport address to which this + * HEARTBEAT is sent (see Section 8.3). + */ +typedef struct sctp_sender_hb_info { + struct sctp_paramhdr param_hdr; + union sctp_addr daddr; + unsigned long sent_at; +} __attribute__((packed)) sctp_sender_hb_info_t; + +/* + * RFC 2960 1.3.2 Sequenced Delivery within Streams + * + * The term "stream" is used in SCTP to refer to a sequence of user + * messages that are to be delivered to the upper-layer protocol in + * order with respect to other messages within the same stream. This is + * in contrast to its usage in TCP, where it refers to a sequence of + * bytes (in this document a byte is assumed to be eight bits). + * ... + * + * This is the structure we use to track both our outbound and inbound + * SSN, or Stream Sequence Numbers. + */ + +struct sctp_stream { + __u16 *ssn; + unsigned int len; +}; + +struct sctp_ssnmap { + struct sctp_stream in; + struct sctp_stream out; + int malloced; +}; + +struct sctp_ssnmap *sctp_ssnmap_new(__u16 in, __u16 out, int gfp); +void sctp_ssnmap_free(struct sctp_ssnmap *map); +void sctp_ssnmap_clear(struct sctp_ssnmap *map); + +/* What is the current SSN number for this stream? */ +static inline __u16 sctp_ssn_peek(struct sctp_stream *stream, __u16 id) +{ + return stream->ssn[id]; +} + +/* Return the next SSN number for this stream. */ +static inline __u16 sctp_ssn_next(struct sctp_stream *stream, __u16 id) +{ + return stream->ssn[id]++; +} + +/* Skip over this ssn and all below. */ +static inline void sctp_ssn_skip(struct sctp_stream *stream, __u16 id, + __u16 ssn) +{ + stream->ssn[id] = ssn+1; +} + +/* + * Pointers to address related SCTP functions. + * (i.e. things that depend on the address family.) + */ +struct sctp_af { + int (*sctp_xmit) (struct sk_buff *skb, + struct sctp_transport *, + int ipfragok); + int (*setsockopt) (struct sock *sk, + int level, + int optname, + char __user *optval, + int optlen); + int (*getsockopt) (struct sock *sk, + int level, + int optname, + char __user *optval, + int __user *optlen); + struct dst_entry *(*get_dst) (struct sctp_association *asoc, + union sctp_addr *daddr, + union sctp_addr *saddr); + void (*get_saddr) (struct sctp_association *asoc, + struct dst_entry *dst, + union sctp_addr *daddr, + union sctp_addr *saddr); + void (*copy_addrlist) (struct list_head *, + struct net_device *); + void (*dst_saddr) (union sctp_addr *saddr, + struct dst_entry *dst, + unsigned short port); + int (*cmp_addr) (const union sctp_addr *addr1, + const union sctp_addr *addr2); + void (*addr_copy) (union sctp_addr *dst, + union sctp_addr *src); + void (*from_skb) (union sctp_addr *, + struct sk_buff *skb, + int saddr); + void (*from_sk) (union sctp_addr *, + struct sock *sk); + void (*to_sk_saddr) (union sctp_addr *, + struct sock *sk); + void (*to_sk_daddr) (union sctp_addr *, + struct sock *sk); + void (*from_addr_param) (union sctp_addr *, + union sctp_addr_param *, + __u16 port, int iif); + int (*to_addr_param) (const union sctp_addr *, + union sctp_addr_param *); + int (*addr_valid) (union sctp_addr *, + struct sctp_sock *); + sctp_scope_t (*scope) (union sctp_addr *); + void (*inaddr_any) (union sctp_addr *, unsigned short); + int (*is_any) (const union sctp_addr *); + int (*available) (union sctp_addr *, + struct sctp_sock *); + int (*skb_iif) (const struct sk_buff *sk); + int (*is_ce) (const struct sk_buff *sk); + void (*seq_dump_addr)(struct seq_file *seq, + union sctp_addr *addr); + __u16 net_header_len; + int sockaddr_len; + sa_family_t sa_family; + struct list_head list; +}; + +struct sctp_af *sctp_get_af_specific(sa_family_t); +int sctp_register_af(struct sctp_af *); + +/* Protocol family functions. */ +struct sctp_pf { + void (*event_msgname)(struct sctp_ulpevent *, char *, int *); + void (*skb_msgname) (struct sk_buff *, char *, int *); + int (*af_supported) (sa_family_t, struct sctp_sock *); + int (*cmp_addr) (const union sctp_addr *, + const union sctp_addr *, + struct sctp_sock *); + int (*bind_verify) (struct sctp_sock *, union sctp_addr *); + int (*send_verify) (struct sctp_sock *, union sctp_addr *); + int (*supported_addrs)(const struct sctp_sock *, __u16 *); + struct sock *(*create_accept_sk) (struct sock *sk, + struct sctp_association *asoc); + void (*addr_v4map) (struct sctp_sock *, union sctp_addr *); + struct sctp_af *af; +}; + + +/* Structure to track chunk fragments that have been acked, but peer + * fragments of the same message have not. + */ +struct sctp_datamsg { + /* Chunks waiting to be submitted to lower layer. */ + struct list_head chunks; + /* Chunks that have been transmitted. */ + struct list_head track; + /* Reference counting. */ + atomic_t refcnt; + /* When is this message no longer interesting to the peer? */ + unsigned long expires_at; + /* Did the messenge fail to send? */ + int send_error; + char send_failed; + /* Control whether chunks from this message can be abandoned. */ + char can_abandon; +}; + +struct sctp_datamsg *sctp_datamsg_from_user(struct sctp_association *, + struct sctp_sndrcvinfo *, + struct msghdr *, int len); +void sctp_datamsg_put(struct sctp_datamsg *); +void sctp_datamsg_free(struct sctp_datamsg *); +void sctp_datamsg_track(struct sctp_chunk *); +void sctp_chunk_fail(struct sctp_chunk *, int error); +int sctp_chunk_abandoned(struct sctp_chunk *); + + +/* RFC2960 1.4 Key Terms + * + * o Chunk: A unit of information within an SCTP packet, consisting of + * a chunk header and chunk-specific content. + * + * As a matter of convenience, we remember the SCTP common header for + * each chunk as well as a few other header pointers... + */ +struct sctp_chunk { + /* These first three elements MUST PRECISELY match the first + * three elements of struct sk_buff. This allows us to reuse + * all the skb_* queue management functions. + */ + struct sctp_chunk *next; + struct sctp_chunk *prev; + struct sk_buff_head *list; + atomic_t refcnt; + + /* This is our link to the per-transport transmitted list. */ + struct list_head transmitted_list; + + /* This field is used by chunks that hold fragmented data. + * For the first fragment this is the list that holds the rest of + * fragments. For the remaining fragments, this is the link to the + * frag_list maintained in the first fragment. + */ + struct list_head frag_list; + + /* This points to the sk_buff containing the actual data. */ + struct sk_buff *skb; + + /* These are the SCTP headers by reverse order in a packet. + * Note that some of these may happen more than once. In that + * case, we point at the "current" one, whatever that means + * for that level of header. + */ + + /* We point this at the FIRST TLV parameter to chunk_hdr. */ + union sctp_params param_hdr; + union { + __u8 *v; + struct sctp_datahdr *data_hdr; + struct sctp_inithdr *init_hdr; + struct sctp_sackhdr *sack_hdr; + struct sctp_heartbeathdr *hb_hdr; + struct sctp_sender_hb_info *hbs_hdr; + struct sctp_shutdownhdr *shutdown_hdr; + struct sctp_signed_cookie *cookie_hdr; + struct sctp_ecnehdr *ecne_hdr; + struct sctp_cwrhdr *ecn_cwr_hdr; + struct sctp_errhdr *err_hdr; + struct sctp_addiphdr *addip_hdr; + struct sctp_fwdtsn_hdr *fwdtsn_hdr; + } subh; + + __u8 *chunk_end; + + struct sctp_chunkhdr *chunk_hdr; + struct sctphdr *sctp_hdr; + + /* This needs to be recoverable for SCTP_SEND_FAILED events. */ + struct sctp_sndrcvinfo sinfo; + + /* Which association does this belong to? */ + struct sctp_association *asoc; + + /* What endpoint received this chunk? */ + struct sctp_ep_common *rcvr; + + /* We fill this in if we are calculating RTT. */ + unsigned long sent_at; + + /* What is the origin IP address for this chunk? */ + union sctp_addr source; + /* Destination address for this chunk. */ + union sctp_addr dest; + + /* For outbound message, track all fragments for SEND_FAILED. */ + struct sctp_datamsg *msg; + + /* For an inbound chunk, this tells us where it came from. + * For an outbound chunk, it tells us where we'd like it to + * go. It is NULL if we have no preference. + */ + struct sctp_transport *transport; + + __u8 rtt_in_progress; /* Is this chunk used for RTT calculation? */ + __u8 resent; /* Has this chunk ever been retransmitted. */ + __u8 has_tsn; /* Does this chunk have a TSN yet? */ + __u8 has_ssn; /* Does this chunk have a SSN yet? */ + __u8 singleton; /* Was this the only chunk in the packet? */ + __u8 end_of_packet; /* Was this the last chunk in the packet? */ + __u8 ecn_ce_done; /* Have we processed the ECN CE bit? */ + __u8 pdiscard; /* Discard the whole packet now? */ + __u8 tsn_gap_acked; /* Is this chunk acked by a GAP ACK? */ + __u8 fast_retransmit; /* Is this chunk fast retransmitted? */ + __u8 tsn_missing_report; /* Data chunk missing counter. */ +}; + +void sctp_chunk_hold(struct sctp_chunk *); +void sctp_chunk_put(struct sctp_chunk *); +int sctp_user_addto_chunk(struct sctp_chunk *chunk, int off, int len, + struct iovec *data); +void sctp_chunk_free(struct sctp_chunk *); +void *sctp_addto_chunk(struct sctp_chunk *, int len, const void *data); +struct sctp_chunk *sctp_chunkify(struct sk_buff *, + const struct sctp_association *, + struct sock *); +void sctp_init_addrs(struct sctp_chunk *, union sctp_addr *, + union sctp_addr *); +const union sctp_addr *sctp_source(const struct sctp_chunk *chunk); + +/* This is a structure for holding either an IPv6 or an IPv4 address. */ +/* sin_family -- AF_INET or AF_INET6 + * sin_port -- ordinary port number + * sin_addr -- cast to either (struct in_addr) or (struct in6_addr) + */ +struct sctp_sockaddr_entry { + struct list_head list; + union sctp_addr a; +}; + +typedef struct sctp_chunk *(sctp_packet_phandler_t)(struct sctp_association *); + +/* This structure holds lists of chunks as we are assembling for + * transmission. + */ +struct sctp_packet { + /* These are the SCTP header values (host order) for the packet. */ + __u16 source_port; + __u16 destination_port; + __u32 vtag; + + /* This contains the payload chunks. */ + struct sk_buff_head chunks; + + /* This is the overhead of the sctp and ip headers. */ + size_t overhead; + /* This is the total size of all chunks INCLUDING padding. */ + size_t size; + + /* The packet is destined for this transport address. + * The function we finally use to pass down to the next lower + * layer lives in the transport structure. + */ + struct sctp_transport *transport; + + /* This packet contains a COOKIE-ECHO chunk. */ + char has_cookie_echo; + + /* This packet containsa SACK chunk. */ + char has_sack; + + /* SCTP cannot fragment this packet. So let ip fragment it. */ + char ipfragok; + + int malloced; +}; + +struct sctp_packet *sctp_packet_init(struct sctp_packet *, + struct sctp_transport *, + __u16 sport, __u16 dport); +struct sctp_packet *sctp_packet_config(struct sctp_packet *, __u32 vtag, int); +sctp_xmit_t sctp_packet_transmit_chunk(struct sctp_packet *, + struct sctp_chunk *); +sctp_xmit_t sctp_packet_append_chunk(struct sctp_packet *, + struct sctp_chunk *); +int sctp_packet_transmit(struct sctp_packet *); +void sctp_packet_free(struct sctp_packet *); + +static inline int sctp_packet_empty(struct sctp_packet *packet) +{ + return (packet->size == packet->overhead); +} + +/* This represents a remote transport address. + * For local transport addresses, we just use union sctp_addr. + * + * RFC2960 Section 1.4 Key Terms + * + * o Transport address: A Transport Address is traditionally defined + * by Network Layer address, Transport Layer protocol and Transport + * Layer port number. In the case of SCTP running over IP, a + * transport address is defined by the combination of an IP address + * and an SCTP port number (where SCTP is the Transport protocol). + * + * RFC2960 Section 7.1 SCTP Differences from TCP Congestion control + * + * o The sender keeps a separate congestion control parameter set for + * each of the destination addresses it can send to (not each + * source-destination pair but for each destination). The parameters + * should decay if the address is not used for a long enough time + * period. + * + */ +struct sctp_transport { + /* A list of transports. */ + struct list_head transports; + + /* Reference counting. */ + atomic_t refcnt; + int dead; + + /* This is the peer's IP address and port. */ + union sctp_addr ipaddr; + + /* These are the functions we call to handle LLP stuff. */ + struct sctp_af *af_specific; + + /* Which association do we belong to? */ + struct sctp_association *asoc; + + /* RFC2960 + * + * 12.3 Per Transport Address Data + * + * For each destination transport address in the peer's + * address list derived from the INIT or INIT ACK chunk, a + * number of data elements needs to be maintained including: + */ + __u32 rtt; /* This is the most recent RTT. */ + + /* RTO : The current retransmission timeout value. */ + __u32 rto; + + /* RTTVAR : The current RTT variation. */ + __u32 rttvar; + + /* SRTT : The current smoothed round trip time. */ + __u32 srtt; + + /* RTO-Pending : A flag used to track if one of the DATA + * chunks sent to this address is currently being + * used to compute a RTT. If this flag is 0, + * the next DATA chunk sent to this destination + * should be used to compute a RTT and this flag + * should be set. Every time the RTT + * calculation completes (i.e. the DATA chunk + * is SACK'd) clear this flag. + */ + int rto_pending; + + /* + * These are the congestion stats. + */ + /* cwnd : The current congestion window. */ + __u32 cwnd; /* This is the actual cwnd. */ + + /* ssthresh : The current slow start threshold value. */ + __u32 ssthresh; + + /* partial : The tracking method for increase of cwnd when in + * bytes acked : congestion avoidance mode (see Section 6.2.2) + */ + __u32 partial_bytes_acked; + + /* Data that has been sent, but not acknowledged. */ + __u32 flight_size; + + /* PMTU : The current known path MTU. */ + __u32 pmtu; + + /* Destination */ + struct dst_entry *dst; + /* Source address. */ + union sctp_addr saddr; + + /* When was the last time(in jiffies) that a data packet was sent on + * this transport? This is used to adjust the cwnd when the transport + * becomes inactive. + */ + unsigned long last_time_used; + + /* Heartbeat interval: The endpoint sends out a Heartbeat chunk to + * the destination address every heartbeat interval. + */ + int hb_interval; + + /* When was the last time (in jiffies) that we heard from this + * transport? We use this to pick new active and retran paths. + */ + unsigned long last_time_heard; + + /* Last time(in jiffies) when cwnd is reduced due to the congestion + * indication based on ECNE chunk. + */ + unsigned long last_time_ecne_reduced; + + /* active : The current active state of this destination, + * : i.e. DOWN, UP, etc. + */ + int active; + + /* hb_allowed : The current heartbeat state of this destination, + * : i.e. ALLOW-HB, NO-HEARTBEAT, etc. + */ + int hb_allowed; + + /* These are the error stats for this destination. */ + + /* Error count : The current error count for this destination. */ + unsigned short error_count; + + /* This is the max_retrans value for the transport and will + * be initialized to proto.max_retrans.path. This can be changed + * using SCTP_SET_PEER_ADDR_PARAMS socket option. + */ + int max_retrans; + + /* Per : A timer used by each destination. + * Destination : + * Timer : + * + * [Everywhere else in the text this is called T3-rtx. -ed] + */ + struct timer_list T3_rtx_timer; + + /* Heartbeat timer is per destination. */ + struct timer_list hb_timer; + + /* Since we're using per-destination retransmission timers + * (see above), we're also using per-destination "transmitted" + * queues. This probably ought to be a private struct + * accessible only within the outqueue, but it's not, yet. + */ + struct list_head transmitted; + + /* We build bundle-able packets for this transport here. */ + struct sctp_packet packet; + + /* This is the list of transports that have chunks to send. */ + struct list_head send_ready; + + int malloced; /* Is this structure kfree()able? */ + + /* State information saved for SFR_CACC algorithm. The key + * idea in SFR_CACC is to maintain state at the sender on a + * per-destination basis when a changeover happens. + * char changeover_active; + * char cycling_changeover; + * __u32 next_tsn_at_change; + * char cacc_saw_newack; + */ + struct { + /* An unsigned integer, which stores the next TSN to be + * used by the sender, at the moment of changeover. + */ + __u32 next_tsn_at_change; + + /* A flag which indicates the occurrence of a changeover */ + char changeover_active; + + /* A flag which indicates whether the change of primary is + * the first switch to this destination address during an + * active switch. + */ + char cycling_changeover; + + /* A temporary flag, which is used during the processing of + * a SACK to estimate the causative TSN(s)'s group. + */ + char cacc_saw_newack; + } cacc; +}; + +struct sctp_transport *sctp_transport_new(const union sctp_addr *, int); +void sctp_transport_set_owner(struct sctp_transport *, + struct sctp_association *); +void sctp_transport_route(struct sctp_transport *, union sctp_addr *, + struct sctp_sock *); +void sctp_transport_pmtu(struct sctp_transport *); +void sctp_transport_free(struct sctp_transport *); +void sctp_transport_reset_timers(struct sctp_transport *); +void sctp_transport_hold(struct sctp_transport *); +void sctp_transport_put(struct sctp_transport *); +void sctp_transport_update_rto(struct sctp_transport *, __u32); +void sctp_transport_raise_cwnd(struct sctp_transport *, __u32, __u32); +void sctp_transport_lower_cwnd(struct sctp_transport *, sctp_lower_cwnd_t); +unsigned long sctp_transport_timeout(struct sctp_transport *); + + +/* This is the structure we use to queue packets as they come into + * SCTP. We write packets to it and read chunks from it. + */ +struct sctp_inq { + /* This is actually a queue of sctp_chunk each + * containing a partially decoded packet. + */ + struct sk_buff_head in; + /* This is the packet which is currently off the in queue and is + * being worked on through the inbound chunk processing. + */ + struct sctp_chunk *in_progress; + + /* This is the delayed task to finish delivering inbound + * messages. + */ + struct work_struct immediate; + + int malloced; /* Is this structure kfree()able? */ +}; + +void sctp_inq_init(struct sctp_inq *); +void sctp_inq_free(struct sctp_inq *); +void sctp_inq_push(struct sctp_inq *, struct sctp_chunk *packet); +struct sctp_chunk *sctp_inq_pop(struct sctp_inq *); +void sctp_inq_set_th_handler(struct sctp_inq *, void (*)(void *), void *); + +/* This is the structure we use to hold outbound chunks. You push + * chunks in and they automatically pop out the other end as bundled + * packets (it calls (*output_handler)()). + * + * This structure covers sections 6.3, 6.4, 6.7, 6.8, 6.10, 7., 8.1, + * and 8.2 of the v13 draft. + * + * It handles retransmissions. The connection to the timeout portion + * of the state machine is through sctp_..._timeout() and timeout_handler. + * + * If you feed it SACKs, it will eat them. + * + * If you give it big chunks, it will fragment them. + * + * It assigns TSN's to data chunks. This happens at the last possible + * instant before transmission. + * + * When free()'d, it empties itself out via output_handler(). + */ +struct sctp_outq { + struct sctp_association *asoc; + + /* Data pending that has never been transmitted. */ + struct sk_buff_head out; + + unsigned out_qlen; /* Total length of queued data chunks. */ + + /* Error of send failed, may used in SCTP_SEND_FAILED event. */ + unsigned error; + + /* These are control chunks we want to send. */ + struct sk_buff_head control; + + /* These are chunks that have been sacked but are above the + * CTSN, or cumulative tsn ack point. + */ + struct list_head sacked; + + /* Put chunks on this list to schedule them for + * retransmission. + */ + struct list_head retransmit; + + /* Put chunks on this list to save them for FWD TSN processing as + * they were abandoned. + */ + struct list_head abandoned; + + /* How many unackd bytes do we have in-flight? */ + __u32 outstanding_bytes; + + /* Corked? */ + char cork; + + /* Is this structure empty? */ + char empty; + + /* Are we kfree()able? */ + char malloced; +}; + +void sctp_outq_init(struct sctp_association *, struct sctp_outq *); +void sctp_outq_teardown(struct sctp_outq *); +void sctp_outq_free(struct sctp_outq*); +int sctp_outq_tail(struct sctp_outq *, struct sctp_chunk *chunk); +int sctp_outq_flush(struct sctp_outq *, int); +int sctp_outq_sack(struct sctp_outq *, struct sctp_sackhdr *); +int sctp_outq_is_empty(const struct sctp_outq *); +void sctp_outq_restart(struct sctp_outq *); + +void sctp_retransmit(struct sctp_outq *, struct sctp_transport *, + sctp_retransmit_reason_t); +void sctp_retransmit_mark(struct sctp_outq *, struct sctp_transport *, __u8); +int sctp_outq_uncork(struct sctp_outq *); +/* Uncork and flush an outqueue. */ +static inline void sctp_outq_cork(struct sctp_outq *q) +{ + q->cork = 1; +} + +/* These bind address data fields common between endpoints and associations */ +struct sctp_bind_addr { + + /* RFC 2960 12.1 Parameters necessary for the SCTP instance + * + * SCTP Port: The local SCTP port number the endpoint is + * bound to. + */ + __u16 port; + + /* RFC 2960 12.1 Parameters necessary for the SCTP instance + * + * Address List: The list of IP addresses that this instance + * has bound. This information is passed to one's + * peer(s) in INIT and INIT ACK chunks. + */ + struct list_head address_list; + + int malloced; /* Are we kfree()able? */ +}; + +void sctp_bind_addr_init(struct sctp_bind_addr *, __u16 port); +void sctp_bind_addr_free(struct sctp_bind_addr *); +int sctp_bind_addr_copy(struct sctp_bind_addr *dest, + const struct sctp_bind_addr *src, + sctp_scope_t scope, int gfp,int flags); +int sctp_add_bind_addr(struct sctp_bind_addr *, union sctp_addr *, + int gfp); +int sctp_del_bind_addr(struct sctp_bind_addr *, union sctp_addr *); +int sctp_bind_addr_match(struct sctp_bind_addr *, const union sctp_addr *, + struct sctp_sock *); +union sctp_addr *sctp_find_unmatch_addr(struct sctp_bind_addr *bp, + const union sctp_addr *addrs, + int addrcnt, + struct sctp_sock *opt); +union sctp_params sctp_bind_addrs_to_raw(const struct sctp_bind_addr *bp, + int *addrs_len, int gfp); +int sctp_raw_to_bind_addrs(struct sctp_bind_addr *bp, __u8 *raw, int len, + __u16 port, int gfp); + +sctp_scope_t sctp_scope(const union sctp_addr *); +int sctp_in_scope(const union sctp_addr *addr, const sctp_scope_t scope); +int sctp_is_any(const union sctp_addr *addr); +int sctp_addr_is_valid(const union sctp_addr *addr); + + +/* What type of endpoint? */ +typedef enum { + SCTP_EP_TYPE_SOCKET, + SCTP_EP_TYPE_ASSOCIATION, +} sctp_endpoint_type_t; + +/* + * A common base class to bridge the implmentation view of a + * socket (usually listening) endpoint versus an association's + * local endpoint. + * This common structure is useful for several purposes: + * 1) Common interface for lookup routines. + * a) Subfunctions work for either endpoint or association + * b) Single interface to lookup allows hiding the lookup lock rather + * than acquiring it externally. + * 2) Common interface for the inbound chunk handling/state machine. + * 3) Common object handling routines for reference counting, etc. + * 4) Disentangle association lookup from endpoint lookup, where we + * do not have to find our endpoint to find our association. + * + */ + +struct sctp_ep_common { + /* Fields to help us manage our entries in the hash tables. */ + struct sctp_ep_common *next; + struct sctp_ep_common **pprev; + int hashent; + + /* Runtime type information. What kind of endpoint is this? */ + sctp_endpoint_type_t type; + + /* Some fields to help us manage this object. + * refcnt - Reference count access to this object. + * dead - Do not attempt to use this object. + * malloced - Do we need to kfree this object? + */ + atomic_t refcnt; + char dead; + char malloced; + + /* What socket does this endpoint belong to? */ + struct sock *sk; + + /* This is where we receive inbound chunks. */ + struct sctp_inq inqueue; + + /* This substructure includes the defining parameters of the + * endpoint: + * bind_addr.port is our shared port number. + * bind_addr.address_list is our set of local IP addresses. + */ + struct sctp_bind_addr bind_addr; + + /* Protection during address list comparisons. */ + rwlock_t addr_lock; +}; + + +/* RFC Section 1.4 Key Terms + * + * o SCTP endpoint: The logical sender/receiver of SCTP packets. On a + * multi-homed host, an SCTP endpoint is represented to its peers as a + * combination of a set of eligible destination transport addresses to + * which SCTP packets can be sent and a set of eligible source + * transport addresses from which SCTP packets can be received. + * All transport addresses used by an SCTP endpoint must use the + * same port number, but can use multiple IP addresses. A transport + * address used by an SCTP endpoint must not be used by another + * SCTP endpoint. In other words, a transport address is unique + * to an SCTP endpoint. + * + * From an implementation perspective, each socket has one of these. + * A TCP-style socket will have exactly one association on one of + * these. An UDP-style socket will have multiple associations hanging + * off one of these. + */ + +struct sctp_endpoint { + /* Common substructure for endpoint and association. */ + struct sctp_ep_common base; + + /* Associations: A list of current associations and mappings + * to the data consumers for each association. This + * may be in the form of a hash table or other + * implementation dependent structure. The data + * consumers may be process identification + * information such as file descriptors, named pipe + * pointer, or table pointers dependent on how SCTP + * is implemented. + */ + /* This is really a list of struct sctp_association entries. */ + struct list_head asocs; + + /* Secret Key: A secret key used by this endpoint to compute + * the MAC. This SHOULD be a cryptographic quality + * random number with a sufficient length. + * Discussion in [RFC1750] can be helpful in + * selection of the key. + */ + __u8 secret_key[SCTP_HOW_MANY_SECRETS][SCTP_SECRET_SIZE]; + int current_key; + int last_key; + int key_changed_at; + + /* Default timeouts. */ + int timeouts[SCTP_NUM_TIMEOUT_TYPES]; + + /* Various thresholds. */ + + /* Name for debugging output... */ + char *debug_name; +}; + +/* Recover the outter endpoint structure. */ +static inline struct sctp_endpoint *sctp_ep(struct sctp_ep_common *base) +{ + struct sctp_endpoint *ep; + + ep = container_of(base, struct sctp_endpoint, base); + return ep; +} + +/* These are function signatures for manipulating endpoints. */ +struct sctp_endpoint *sctp_endpoint_new(struct sock *, int); +void sctp_endpoint_free(struct sctp_endpoint *); +void sctp_endpoint_put(struct sctp_endpoint *); +void sctp_endpoint_hold(struct sctp_endpoint *); +void sctp_endpoint_add_asoc(struct sctp_endpoint *, struct sctp_association *); +struct sctp_association *sctp_endpoint_lookup_assoc( + const struct sctp_endpoint *ep, + const union sctp_addr *paddr, + struct sctp_transport **); +int sctp_endpoint_is_peeled_off(struct sctp_endpoint *, + const union sctp_addr *); +struct sctp_endpoint *sctp_endpoint_is_match(struct sctp_endpoint *, + const union sctp_addr *); +int sctp_has_association(const union sctp_addr *laddr, + const union sctp_addr *paddr); + +int sctp_verify_init(const struct sctp_association *asoc, sctp_cid_t, + sctp_init_chunk_t *peer_init, struct sctp_chunk *chunk, + struct sctp_chunk **err_chunk); +int sctp_process_init(struct sctp_association *, sctp_cid_t cid, + const union sctp_addr *peer, + sctp_init_chunk_t *init, int gfp); +__u32 sctp_generate_tag(const struct sctp_endpoint *); +__u32 sctp_generate_tsn(const struct sctp_endpoint *); + + +/* RFC2960 + * + * 12. Recommended Transmission Control Block (TCB) Parameters + * + * This section details a recommended set of parameters that should + * be contained within the TCB for an implementation. This section is + * for illustrative purposes and should not be deemed as requirements + * on an implementation or as an exhaustive list of all parameters + * inside an SCTP TCB. Each implementation may need its own additional + * parameters for optimization. + */ + + +/* Here we have information about each individual association. */ +struct sctp_association { + + /* A base structure common to endpoint and association. + * In this context, it represents the associations's view + * of the local endpoint of the association. + */ + struct sctp_ep_common base; + + /* Associations on the same socket. */ + struct list_head asocs; + + /* association id. */ + sctp_assoc_t assoc_id; + + /* This is our parent endpoint. */ + struct sctp_endpoint *ep; + + /* These are those association elements needed in the cookie. */ + struct sctp_cookie c; + + /* This is all information about our peer. */ + struct { + /* rwnd + * + * Peer Rwnd : Current calculated value of the peer's rwnd. + */ + __u32 rwnd; + + /* transport_addr_list + * + * Peer : A list of SCTP transport addresses that the + * Transport : peer is bound to. This information is derived + * Address : from the INIT or INIT ACK and is used to + * List : associate an inbound packet with a given + * : association. Normally this information is + * : hashed or keyed for quick lookup and access + * : of the TCB. + * + * It is a list of SCTP_transport's. + */ + struct list_head transport_addr_list; + + /* port + * The transport layer port number. + */ + __u16 port; + + /* primary_path + * + * Primary : This is the current primary destination + * Path : transport address of the peer endpoint. It + * : may also specify a source transport address + * : on this endpoint. + * + * All of these paths live on transport_addr_list. + * + * At the bakeoffs, we discovered that the intent of + * primaryPath is that it only changes when the ULP + * asks to have it changed. We add the activePath to + * designate the connection we are currently using to + * transmit new data and most control chunks. + */ + struct sctp_transport *primary_path; + + /* Cache the primary path address here, when we + * need a an address for msg_name. + */ + union sctp_addr primary_addr; + + /* active_path + * The path that we are currently using to + * transmit new data and most control chunks. + */ + struct sctp_transport *active_path; + + /* retran_path + * + * RFC2960 6.4 Multi-homed SCTP Endpoints + * ... + * Furthermore, when its peer is multi-homed, an + * endpoint SHOULD try to retransmit a chunk to an + * active destination transport address that is + * different from the last destination address to + * which the DATA chunk was sent. + */ + struct sctp_transport *retran_path; + + /* Pointer to last transport I have sent on. */ + struct sctp_transport *last_sent_to; + + /* This is the last transport I have received DATA on. */ + struct sctp_transport *last_data_from; + + /* + * Mapping An array of bits or bytes indicating which out of + * Array order TSN's have been received (relative to the + * Last Rcvd TSN). If no gaps exist, i.e. no out of + * order packets have been received, this array + * will be set to all zero. This structure may be + * in the form of a circular buffer or bit array. + * + * Last Rcvd : This is the last TSN received in + * TSN : sequence. This value is set initially by + * : taking the peer's Initial TSN, received in + * : the INIT or INIT ACK chunk, and subtracting + * : one from it. + * + * Throughout most of the specification this is called the + * "Cumulative TSN ACK Point". In this case, we + * ignore the advice in 12.2 in favour of the term + * used in the bulk of the text. This value is hidden + * in tsn_map--we get it by calling sctp_tsnmap_get_ctsn(). + */ + struct sctp_tsnmap tsn_map; + __u8 _map[sctp_tsnmap_storage_size(SCTP_TSN_MAP_SIZE)]; + + /* Ack State : This flag indicates if the next received + * : packet is to be responded to with a + * : SACK. This is initializedto 0. When a packet + * : is received it is incremented. If this value + * : reaches 2 or more, a SACK is sent and the + * : value is reset to 0. Note: This is used only + * : when no DATA chunks are received out of + * : order. When DATA chunks are out of order, + * : SACK's are not delayed (see Section 6). + */ + __u8 sack_needed; /* Do we need to sack the peer? */ + + /* These are capabilities which our peer advertised. */ + __u8 ecn_capable; /* Can peer do ECN? */ + __u8 ipv4_address; /* Peer understands IPv4 addresses? */ + __u8 ipv6_address; /* Peer understands IPv6 addresses? */ + __u8 hostname_address;/* Peer understands DNS addresses? */ + __u8 asconf_capable; /* Does peer support ADDIP? */ + __u8 prsctp_capable; /* Can peer do PR-SCTP? */ + + __u32 adaption_ind; /* Adaption Code point. */ + + /* This mask is used to disable sending the ASCONF chunk + * with specified parameter to peer. + */ + __u16 addip_disabled_mask; + + struct sctp_inithdr i; + int cookie_len; + void *cookie; + + /* ADDIP Section 4.2 Upon reception of an ASCONF Chunk. + * C1) ... "Peer-Serial-Number'. This value MUST be initialized to the + * Initial TSN Value minus 1 + */ + __u32 addip_serial; + } peer; + + /* State : A state variable indicating what state the + * : association is in, i.e. COOKIE-WAIT, + * : COOKIE-ECHOED, ESTABLISHED, SHUTDOWN-PENDING, + * : SHUTDOWN-SENT, SHUTDOWN-RECEIVED, SHUTDOWN-ACK-SENT. + * + * Note: No "CLOSED" state is illustrated since if a + * association is "CLOSED" its TCB SHOULD be removed. + * + * In this implementation we DO have a CLOSED + * state which is used during initiation and shutdown. + * + * State takes values from SCTP_STATE_*. + */ + sctp_state_t state; + + /* The cookie life I award for any cookie. */ + struct timeval cookie_life; + + /* Overall : The overall association error count. + * Error Count : [Clear this any time I get something.] + */ + int overall_error_count; + + /* These are the association's initial, max, and min RTO values. + * These values will be initialized by system defaults, but can + * be modified via the SCTP_RTOINFO socket option. + */ + __u32 rto_initial; + __u32 rto_max; + __u32 rto_min; + + /* Maximum number of new data packets that can be sent in a burst. */ + int max_burst; + + /* This is the max_retrans value for the association. This value will + * be initialized initialized from system defaults, but can be + * modified by the SCTP_ASSOCINFO socket option. + */ + int max_retrans; + + /* Maximum number of times the endpoint will retransmit INIT */ + __u16 max_init_attempts; + + /* How many times have we resent an INIT? */ + __u16 init_retries; + + /* The largest timeout or RTO value to use in attempting an INIT */ + __u16 max_init_timeo; + + int timeouts[SCTP_NUM_TIMEOUT_TYPES]; + struct timer_list timers[SCTP_NUM_TIMEOUT_TYPES]; + + /* Transport to which SHUTDOWN chunk was last sent. */ + struct sctp_transport *shutdown_last_sent_to; + + /* Next TSN : The next TSN number to be assigned to a new + * : DATA chunk. This is sent in the INIT or INIT + * : ACK chunk to the peer and incremented each + * : time a DATA chunk is assigned a TSN + * : (normally just prior to transmit or during + * : fragmentation). + */ + __u32 next_tsn; + + /* + * Last Rcvd : This is the last TSN received in sequence. This value + * TSN : is set initially by taking the peer's Initial TSN, + * : received in the INIT or INIT ACK chunk, and + * : subtracting one from it. + * + * Most of RFC 2960 refers to this as the Cumulative TSN Ack Point. + */ + + __u32 ctsn_ack_point; + + /* PR-SCTP Advanced.Peer.Ack.Point */ + __u32 adv_peer_ack_point; + + /* Highest TSN that is acknowledged by incoming SACKs. */ + __u32 highest_sacked; + + /* The number of unacknowledged data chunks. Reported through + * the SCTP_STATUS sockopt. + */ + __u16 unack_data; + + /* This is the association's receive buffer space. This value is used + * to set a_rwnd field in an INIT or a SACK chunk. + */ + __u32 rwnd; + + /* This is the last advertised value of rwnd over a SACK chunk. */ + __u32 a_rwnd; + + /* Number of bytes by which the rwnd has slopped. The rwnd is allowed + * to slop over a maximum of the association's frag_point. + */ + __u32 rwnd_over; + + /* This is the sndbuf size in use for the association. + * This corresponds to the sndbuf size for the association, + * as specified in the sk->sndbuf. + */ + int sndbuf_used; + + /* This is the wait queue head for send requests waiting on + * the association sndbuf space. + */ + wait_queue_head_t wait; + + /* Association : The smallest PMTU discovered for all of the + * PMTU : peer's transport addresses. + */ + __u32 pmtu; + + /* The message size at which SCTP fragmentation will occur. */ + __u32 frag_point; + + /* Currently only one counter is used to count INIT errors. */ + int counters[SCTP_NUMBER_COUNTERS]; + + /* Default send parameters. */ + __u16 default_stream; + __u16 default_flags; + __u32 default_ppid; + __u32 default_context; + __u32 default_timetolive; + + /* This tracks outbound ssn for a given stream. */ + struct sctp_ssnmap *ssnmap; + + /* All outbound chunks go through this structure. */ + struct sctp_outq outqueue; + + /* A smart pipe that will handle reordering and fragmentation, + * as well as handle passing events up to the ULP. + */ + struct sctp_ulpq ulpq; + + /* Last TSN that caused an ECNE Chunk to be sent. */ + __u32 last_ecne_tsn; + + /* Last TSN that caused a CWR Chunk to be sent. */ + __u32 last_cwr_tsn; + + /* How many duplicated TSNs have we seen? */ + int numduptsns; + + /* Number of seconds of idle time before an association is closed. */ + __u32 autoclose; + + /* These are to support + * "SCTP Extensions for Dynamic Reconfiguration of IP Addresses + * and Enforcement of Flow and Message Limits" + * <draft-ietf-tsvwg-addip-sctp-02.txt> + * or "ADDIP" for short. + */ + + + + /* ADDIP Section 4.1.1 Congestion Control of ASCONF Chunks + * + * R1) One and only one ASCONF Chunk MAY be in transit and + * unacknowledged at any one time. If a sender, after sending + * an ASCONF chunk, decides it needs to transfer another + * ASCONF Chunk, it MUST wait until the ASCONF-ACK Chunk + * returns from the previous ASCONF Chunk before sending a + * subsequent ASCONF. Note this restriction binds each side, + * so at any time two ASCONF may be in-transit on any given + * association (one sent from each endpoint). + * + * [This is our one-and-only-one ASCONF in flight. If we do + * not have an ASCONF in flight, this is NULL.] + */ + struct sctp_chunk *addip_last_asconf; + + /* ADDIP Section 4.2 Upon reception of an ASCONF Chunk. + * + * IMPLEMENTATION NOTE: As an optimization a receiver may wish + * to save the last ASCONF-ACK for some predetermined period + * of time and instead of re-processing the ASCONF (with the + * same serial number) it may just re-transmit the + * ASCONF-ACK. It may wish to use the arrival of a new serial + * number to discard the previously saved ASCONF-ACK or any + * other means it may choose to expire the saved ASCONF-ACK. + * + * [This is our saved ASCONF-ACK. We invalidate it when a new + * ASCONF serial number arrives.] + */ + struct sctp_chunk *addip_last_asconf_ack; + + /* These ASCONF chunks are waiting to be sent. + * + * These chunaks can't be pushed to outqueue until receiving + * ASCONF_ACK for the previous ASCONF indicated by + * addip_last_asconf, so as to guarantee that only one ASCONF + * is in flight at any time. + * + * ADDIP Section 4.1.1 Congestion Control of ASCONF Chunks + * + * In defining the ASCONF Chunk transfer procedures, it is + * essential that these transfers MUST NOT cause congestion + * within the network. To achieve this, we place these + * restrictions on the transfer of ASCONF Chunks: + * + * R1) One and only one ASCONF Chunk MAY be in transit and + * unacknowledged at any one time. If a sender, after sending + * an ASCONF chunk, decides it needs to transfer another + * ASCONF Chunk, it MUST wait until the ASCONF-ACK Chunk + * returns from the previous ASCONF Chunk before sending a + * subsequent ASCONF. Note this restriction binds each side, + * so at any time two ASCONF may be in-transit on any given + * association (one sent from each endpoint). + * + * + * [I really think this is EXACTLY the sort of intelligence + * which already resides in sctp_outq. Please move this + * queue and its supporting logic down there. --piggy] + */ + struct sk_buff_head addip_chunks; + + /* ADDIP Section 4.1 ASCONF Chunk Procedures + * + * A2) A serial number should be assigned to the Chunk. The + * serial number SHOULD be a monotonically increasing + * number. The serial number SHOULD be initialized at + * the start of the association to the same value as the + * Initial TSN and every time a new ASCONF chunk is created + * it is incremented by one after assigning the serial number + * to the newly created chunk. + * + * ADDIP + * 3.1.1 Address/Stream Configuration Change Chunk (ASCONF) + * + * Serial Number : 32 bits (unsigned integer) + * + * This value represents a Serial Number for the ASCONF + * Chunk. The valid range of Serial Number is from 0 to + * 4294967295 (2^32 - 1). Serial Numbers wrap back to 0 + * after reaching 4294967295. + */ + __u32 addip_serial; + + /* Need to send an ECNE Chunk? */ + char need_ecne; + + /* Is it a temporary association? */ + char temp; +}; + + +/* An eyecatcher for determining if we are really looking at an + * association data structure. + */ +enum { + SCTP_ASSOC_EYECATCHER = 0xa550c123, +}; + +/* Recover the outter association structure. */ +static inline struct sctp_association *sctp_assoc(struct sctp_ep_common *base) +{ + struct sctp_association *asoc; + + asoc = container_of(base, struct sctp_association, base); + return asoc; +} + +/* These are function signatures for manipulating associations. */ + + +struct sctp_association * +sctp_association_new(const struct sctp_endpoint *, const struct sock *, + sctp_scope_t scope, int gfp); +void sctp_association_free(struct sctp_association *); +void sctp_association_put(struct sctp_association *); +void sctp_association_hold(struct sctp_association *); + +struct sctp_transport *sctp_assoc_choose_shutdown_transport( + struct sctp_association *); +void sctp_assoc_update_retran_path(struct sctp_association *); +struct sctp_transport *sctp_assoc_lookup_paddr(const struct sctp_association *, + const union sctp_addr *); +int sctp_assoc_lookup_laddr(struct sctp_association *asoc, + const union sctp_addr *laddr); +struct sctp_transport *sctp_assoc_add_peer(struct sctp_association *, + const union sctp_addr *address, + const int gfp); +void sctp_assoc_del_peer(struct sctp_association *asoc, + const union sctp_addr *addr); +void sctp_assoc_control_transport(struct sctp_association *, + struct sctp_transport *, + sctp_transport_cmd_t, sctp_sn_error_t); +struct sctp_transport *sctp_assoc_lookup_tsn(struct sctp_association *, __u32); +struct sctp_transport *sctp_assoc_is_match(struct sctp_association *, + const union sctp_addr *, + const union sctp_addr *); +void sctp_assoc_migrate(struct sctp_association *, struct sock *); +void sctp_assoc_update(struct sctp_association *old, + struct sctp_association *new); + +__u32 sctp_association_get_next_tsn(struct sctp_association *); + +void sctp_assoc_sync_pmtu(struct sctp_association *); +void sctp_assoc_rwnd_increase(struct sctp_association *, unsigned); +void sctp_assoc_rwnd_decrease(struct sctp_association *, unsigned); +void sctp_assoc_set_primary(struct sctp_association *, + struct sctp_transport *); +int sctp_assoc_set_bind_addr_from_ep(struct sctp_association *, int); +int sctp_assoc_set_bind_addr_from_cookie(struct sctp_association *, + struct sctp_cookie*, int gfp); + +int sctp_cmp_addr_exact(const union sctp_addr *ss1, + const union sctp_addr *ss2); +struct sctp_chunk *sctp_get_ecne_prepend(struct sctp_association *asoc); + +/* A convenience structure to parse out SCTP specific CMSGs. */ +typedef struct sctp_cmsgs { + struct sctp_initmsg *init; + struct sctp_sndrcvinfo *info; +} sctp_cmsgs_t; + +/* Structure for tracking memory objects */ +typedef struct { + char *label; + atomic_t *counter; +} sctp_dbg_objcnt_entry_t; + +#endif /* __sctp_structs_h__ */ diff --git a/include/net/sctp/tsnmap.h b/include/net/sctp/tsnmap.h new file mode 100644 index 000000000000..021947da70ea --- /dev/null +++ b/include/net/sctp/tsnmap.h @@ -0,0 +1,207 @@ +/* SCTP kernel reference Implementation + * (C) Copyright IBM Corp. 2001, 2004 + * Copyright (c) 1999-2000 Cisco, Inc. + * Copyright (c) 1999-2001 Motorola, Inc. + * Copyright (c) 2001 Intel Corp. + * + * This file is part of the SCTP kernel reference Implementation + * + * These are the definitions needed for the tsnmap type. The tsnmap is used + * to track out of order TSNs received. + * + * The SCTP reference implementation is free software; + * you can redistribute it and/or modify it under the terms of + * the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * The SCTP reference implementation is distributed in the hope that it + * will be useful, but WITHOUT ANY WARRANTY; without even the implied + * ************************ + * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * See the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU CC; see the file COPYING. If not, write to + * the Free Software Foundation, 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + * + * Please send any bug reports or fixes you make to the + * email address(es): + * lksctp developers <lksctp-developers@lists.sourceforge.net> + * + * Or submit a bug report through the following website: + * http://www.sf.net/projects/lksctp + * + * Written or modified by: + * Jon Grimm <jgrimm@us.ibm.com> + * La Monte H.P. Yarroll <piggy@acm.org> + * Karl Knutson <karl@athena.chicago.il.us> + * Sridhar Samudrala <sri@us.ibm.com> + * + * Any bugs reported given to us we will try to fix... any fixes shared will + * be incorporated into the next SCTP release. + */ +#include <net/sctp/constants.h> + +#ifndef __sctp_tsnmap_h__ +#define __sctp_tsnmap_h__ + +/* RFC 2960 12.2 Parameters necessary per association (i.e. the TCB) + * Mapping An array of bits or bytes indicating which out of + * Array order TSN's have been received (relative to the + * Last Rcvd TSN). If no gaps exist, i.e. no out of + * order packets have been received, this array + * will be set to all zero. This structure may be + * in the form of a circular buffer or bit array. + */ +struct sctp_tsnmap { + /* This array counts the number of chunks with each TSN. + * It points at one of the two buffers with which we will + * ping-pong between. + */ + __u8 *tsn_map; + + /* This marks the tsn which overflows the tsn_map, when the + * cumulative ack point reaches this point we know we can switch + * maps (tsn_map and overflow_map swap). + */ + __u32 overflow_tsn; + + /* This is the overflow array for tsn_map. + * It points at one of the other ping-pong buffers. + */ + __u8 *overflow_map; + + /* This is the TSN at tsn_map[0]. */ + __u32 base_tsn; + + /* Last Rcvd : This is the last TSN received in + * TSN : sequence. This value is set initially by + * : taking the peer's Initial TSN, received in + * : the INIT or INIT ACK chunk, and subtracting + * : one from it. + * + * Throughout most of the specification this is called the + * "Cumulative TSN ACK Point". In this case, we + * ignore the advice in 12.2 in favour of the term + * used in the bulk of the text. + */ + __u32 cumulative_tsn_ack_point; + + /* This is the minimum number of TSNs we can track. This corresponds + * to the size of tsn_map. Note: the overflow_map allows us to + * potentially track more than this quantity. + */ + __u16 len; + + /* This is the highest TSN we've marked. */ + __u32 max_tsn_seen; + + /* Data chunks pending receipt. used by SCTP_STATUS sockopt */ + __u16 pending_data; + + /* Record duplicate TSNs here. We clear this after + * every SACK. Store up to SCTP_MAX_DUP_TSNS worth of + * information. + */ + __u32 dup_tsns[SCTP_MAX_DUP_TSNS]; + __u16 num_dup_tsns; + + /* Record gap ack block information here. */ + struct sctp_gap_ack_block gabs[SCTP_MAX_GABS]; + + int malloced; + + __u8 raw_map[0]; +}; + +struct sctp_tsnmap_iter { + __u32 start; +}; + +/* This macro assists in creation of external storage for variable length + * internal buffers. We double allocate so the overflow map works. + */ +#define sctp_tsnmap_storage_size(count) (sizeof(__u8) * (count) * 2) + +/* Initialize a block of memory as a tsnmap. */ +struct sctp_tsnmap *sctp_tsnmap_init(struct sctp_tsnmap *, __u16 len, + __u32 initial_tsn); + +/* Test the tracking state of this TSN. + * Returns: + * 0 if the TSN has not yet been seen + * >0 if the TSN has been seen (duplicate) + * <0 if the TSN is invalid (too large to track) + */ +int sctp_tsnmap_check(const struct sctp_tsnmap *, __u32 tsn); + +/* Mark this TSN as seen. */ +void sctp_tsnmap_mark(struct sctp_tsnmap *, __u32 tsn); + +/* Mark this TSN and all lower as seen. */ +void sctp_tsnmap_skip(struct sctp_tsnmap *map, __u32 tsn); + +/* Retrieve the Cumulative TSN ACK Point. */ +static inline __u32 sctp_tsnmap_get_ctsn(const struct sctp_tsnmap *map) +{ + return map->cumulative_tsn_ack_point; +} + +/* Retrieve the highest TSN we've seen. */ +static inline __u32 sctp_tsnmap_get_max_tsn_seen(const struct sctp_tsnmap *map) +{ + return map->max_tsn_seen; +} + +/* How many duplicate TSNs are stored? */ +static inline __u16 sctp_tsnmap_num_dups(struct sctp_tsnmap *map) +{ + return map->num_dup_tsns; +} + +/* Return pointer to duplicate tsn array as needed by SACK. */ +static inline __u32 *sctp_tsnmap_get_dups(struct sctp_tsnmap *map) +{ + map->num_dup_tsns = 0; + return map->dup_tsns; +} + +/* How many gap ack blocks do we have recorded? */ +__u16 sctp_tsnmap_num_gabs(struct sctp_tsnmap *map); + +/* Refresh the count on pending data. */ +__u16 sctp_tsnmap_pending(struct sctp_tsnmap *map); + +/* Return pointer to gap ack blocks as needed by SACK. */ +static inline struct sctp_gap_ack_block *sctp_tsnmap_get_gabs(struct sctp_tsnmap *map) +{ + return map->gabs; +} + +/* Is there a gap in the TSN map? */ +static inline int sctp_tsnmap_has_gap(const struct sctp_tsnmap *map) +{ + int has_gap; + + has_gap = (map->cumulative_tsn_ack_point != map->max_tsn_seen); + return has_gap; +} + +/* Mark a duplicate TSN. Note: limit the storage of duplicate TSN + * information. + */ +static inline void sctp_tsnmap_mark_dup(struct sctp_tsnmap *map, __u32 tsn) +{ + if (map->num_dup_tsns < SCTP_MAX_DUP_TSNS) + map->dup_tsns[map->num_dup_tsns++] = htonl(tsn); +} + +/* Renege a TSN that was seen. */ +void sctp_tsnmap_renege(struct sctp_tsnmap *, __u32 tsn); + +/* Is there a gap in the TSN map? */ +int sctp_tsnmap_has_gap(const struct sctp_tsnmap *); + +#endif /* __sctp_tsnmap_h__ */ diff --git a/include/net/sctp/ulpevent.h b/include/net/sctp/ulpevent.h new file mode 100644 index 000000000000..1019d83a580a --- /dev/null +++ b/include/net/sctp/ulpevent.h @@ -0,0 +1,162 @@ +/* SCTP kernel reference Implementation + * (C) Copyright IBM Corp. 2001, 2004 + * Copyright (c) 1999-2000 Cisco, Inc. + * Copyright (c) 1999-2001 Motorola, Inc. + * Copyright (c) 2001 Intel Corp. + * Copyright (c) 2001 Nokia, Inc. + * Copyright (c) 2001 La Monte H.P. Yarroll + * + * These are the definitions needed for the sctp_ulpevent type. The + * sctp_ulpevent type is used to carry information from the state machine + * upwards to the ULP. + * + * This file is part of the SCTP kernel reference Implementation + * + * The SCTP reference implementation is free software; + * you can redistribute it and/or modify it under the terms of + * the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * The SCTP reference implementation is distributed in the hope that it + * will be useful, but WITHOUT ANY WARRANTY; without even the implied + * ************************ + * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * See the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU CC; see the file COPYING. If not, write to + * the Free Software Foundation, 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + * + * Please send any bug reports or fixes you make to the + * email address(es): + * lksctp developers <lksctp-developers@lists.sourceforge.net> + * + * Or submit a bug report through the following website: + * http://www.sf.net/projects/lksctp + * + * Written or modified by: + * Jon Grimm <jgrimm@us.ibm.com> + * La Monte H.P. Yarroll <piggy@acm.org> + * Karl Knutson <karl@athena.chicago.il.us> + * Sridhar Samudrala <sri@us.ibm.com> + * + * Any bugs reported given to us we will try to fix... any fixes shared will + * be incorporated into the next SCTP release. + */ + +#ifndef __sctp_ulpevent_h__ +#define __sctp_ulpevent_h__ + +/* A structure to carry information to the ULP (e.g. Sockets API) */ +/* Warning: This sits inside an skb.cb[] area. Be very careful of + * growing this structure as it is at the maximum limit now. + */ +struct sctp_ulpevent { + struct sctp_association *asoc; + __u16 stream; + __u16 ssn; + __u16 flags; + __u32 ppid; + __u32 tsn; + __u32 cumtsn; + int msg_flags; + int iif; +}; + +/* Retrieve the skb this event sits inside of. */ +static inline struct sk_buff *sctp_event2skb(struct sctp_ulpevent *ev) +{ + return container_of((void *)ev, struct sk_buff, cb); +} + +/* Retrieve & cast the event sitting inside the skb. */ +static inline struct sctp_ulpevent *sctp_skb2event(struct sk_buff *skb) +{ + return (struct sctp_ulpevent *)skb->cb; +} + +void sctp_ulpevent_free(struct sctp_ulpevent *); +int sctp_ulpevent_is_notification(const struct sctp_ulpevent *); +void sctp_queue_purge_ulpevents(struct sk_buff_head *list); + +struct sctp_ulpevent *sctp_ulpevent_make_assoc_change( + const struct sctp_association *asoc, + __u16 flags, + __u16 state, + __u16 error, + __u16 outbound, + __u16 inbound, + int gfp); + +struct sctp_ulpevent *sctp_ulpevent_make_peer_addr_change( + const struct sctp_association *asoc, + const struct sockaddr_storage *aaddr, + int flags, + int state, + int error, + int gfp); + +struct sctp_ulpevent *sctp_ulpevent_make_remote_error( + const struct sctp_association *asoc, + struct sctp_chunk *chunk, + __u16 flags, + int gfp); +struct sctp_ulpevent *sctp_ulpevent_make_send_failed( + const struct sctp_association *asoc, + struct sctp_chunk *chunk, + __u16 flags, + __u32 error, + int gfp); + +struct sctp_ulpevent *sctp_ulpevent_make_shutdown_event( + const struct sctp_association *asoc, + __u16 flags, + int gfp); + +struct sctp_ulpevent *sctp_ulpevent_make_pdapi( + const struct sctp_association *asoc, + __u32 indication, int gfp); + +struct sctp_ulpevent *sctp_ulpevent_make_adaption_indication( + const struct sctp_association *asoc, int gfp); + +struct sctp_ulpevent *sctp_ulpevent_make_rcvmsg(struct sctp_association *asoc, + struct sctp_chunk *chunk, + int gfp); + +void sctp_ulpevent_read_sndrcvinfo(const struct sctp_ulpevent *event, + struct msghdr *); +__u16 sctp_ulpevent_get_notification_type(const struct sctp_ulpevent *event); + +/* Is this event type enabled? */ +static inline int sctp_ulpevent_type_enabled(__u16 sn_type, + struct sctp_event_subscribe *mask) +{ + char *amask = (char *) mask; + return amask[sn_type - SCTP_SN_TYPE_BASE]; +} + +/* Given an event subscription, is this event enabled? */ +static inline int sctp_ulpevent_is_enabled(const struct sctp_ulpevent *event, + struct sctp_event_subscribe *mask) +{ + __u16 sn_type; + int enabled = 1; + + if (sctp_ulpevent_is_notification(event)) { + sn_type = sctp_ulpevent_get_notification_type(event); + enabled = sctp_ulpevent_type_enabled(sn_type, mask); + } + return enabled; +} + +#endif /* __sctp_ulpevent_h__ */ + + + + + + + diff --git a/include/net/sctp/ulpqueue.h b/include/net/sctp/ulpqueue.h new file mode 100644 index 000000000000..961736d29d21 --- /dev/null +++ b/include/net/sctp/ulpqueue.h @@ -0,0 +1,92 @@ +/* SCTP kernel reference Implementation + * (C) Copyright IBM Corp. 2001, 2004 + * Copyright (c) 1999-2000 Cisco, Inc. + * Copyright (c) 1999-2001 Motorola, Inc. + * Copyright (c) 2001 Intel Corp. + * Copyright (c) 2001 Nokia, Inc. + * Copyright (c) 2001 La Monte H.P. Yarroll + * + * These are the definitions needed for the sctp_ulpq type. The + * sctp_ulpq is the interface between the Upper Layer Protocol, or ULP, + * and the core SCTP state machine. This is the component which handles + * reassembly and ordering. + * + * The SCTP reference implementation is free software; + * you can redistribute it and/or modify it under the terms of + * the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * the SCTP reference implementation is distributed in the hope that it + * will be useful, but WITHOUT ANY WARRANTY; without even the implied + * ************************ + * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * See the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU CC; see the file COPYING. If not, write to + * the Free Software Foundation, 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + * + * Please send any bug reports or fixes you make to the + * email addresses: + * lksctp developers <lksctp-developers@lists.sourceforge.net> + * + * Or submit a bug report through the following website: + * http://www.sf.net/projects/lksctp + * + * Written or modified by: + * Jon Grimm <jgrimm@us.ibm.com> + * La Monte H.P. Yarroll <piggy@acm.org> + * Sridhar Samudrala <sri@us.ibm.com> + * + * Any bugs reported given to us we will try to fix... any fixes shared will + * be incorporated into the next SCTP release. + */ + +#ifndef __sctp_ulpqueue_h__ +#define __sctp_ulpqueue_h__ + +/* A structure to carry information to the ULP (e.g. Sockets API) */ +struct sctp_ulpq { + char malloced; + char pd_mode; + struct sctp_association *asoc; + struct sk_buff_head reasm; + struct sk_buff_head lobby; +}; + +/* Prototypes. */ +struct sctp_ulpq *sctp_ulpq_init(struct sctp_ulpq *, + struct sctp_association *); +void sctp_ulpq_free(struct sctp_ulpq *); + +/* Add a new DATA chunk for processing. */ +int sctp_ulpq_tail_data(struct sctp_ulpq *, struct sctp_chunk *, int); + +/* Add a new event for propagation to the ULP. */ +int sctp_ulpq_tail_event(struct sctp_ulpq *, struct sctp_ulpevent *ev); + +/* Renege previously received chunks. */ +void sctp_ulpq_renege(struct sctp_ulpq *, struct sctp_chunk *, int); + +/* Perform partial delivery. */ +void sctp_ulpq_partial_delivery(struct sctp_ulpq *, struct sctp_chunk *, int); + +/* Abort the partial delivery. */ +void sctp_ulpq_abort_pd(struct sctp_ulpq *, int); + +/* Clear the partial data delivery condition on this socket. */ +int sctp_clear_pd(struct sock *sk); + +/* Skip over an SSN. */ +void sctp_ulpq_skip(struct sctp_ulpq *ulpq, __u16 sid, __u16 ssn); + +#endif /* __sctp_ulpqueue_h__ */ + + + + + + + diff --git a/include/net/sctp/user.h b/include/net/sctp/user.h new file mode 100644 index 000000000000..2758e8ce4f25 --- /dev/null +++ b/include/net/sctp/user.h @@ -0,0 +1,589 @@ +/* SCTP kernel reference Implementation + * (C) Copyright IBM Corp. 2001, 2004 + * Copyright (c) 1999-2000 Cisco, Inc. + * Copyright (c) 1999-2001 Motorola, Inc. + * Copyright (c) 2002 Intel Corp. + * + * This file is part of the SCTP kernel reference Implementation + * + * This header represents the structures and constants needed to support + * the SCTP Extension to the Sockets API. + * + * The SCTP reference implementation is free software; + * you can redistribute it and/or modify it under the terms of + * the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * The SCTP reference implementation is distributed in the hope that it + * will be useful, but WITHOUT ANY WARRANTY; without even the implied + * ************************ + * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * See the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU CC; see the file COPYING. If not, write to + * the Free Software Foundation, 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + * + * Please send any bug reports or fixes you make to the + * email address(es): + * lksctp developers <lksctp-developers@lists.sourceforge.net> + * + * Or submit a bug report through the following website: + * http://www.sf.net/projects/lksctp + * + * Written or modified by: + * La Monte H.P. Yarroll <piggy@acm.org> + * R. Stewart <randall@sctp.chicago.il.us> + * K. Morneau <kmorneau@cisco.com> + * Q. Xie <qxie1@email.mot.com> + * Karl Knutson <karl@athena.chicago.il.us> + * Jon Grimm <jgrimm@us.ibm.com> + * Daisy Chang <daisyc@us.ibm.com> + * Ryan Layer <rmlayer@us.ibm.com> + * Ardelle Fan <ardelle.fan@intel.com> + * Sridhar Samudrala <sri@us.ibm.com> + * + * Any bugs reported given to us we will try to fix... any fixes shared will + * be incorporated into the next SCTP release. + */ + +#ifndef __net_sctp_user_h__ +#define __net_sctp_user_h__ + +#include <linux/types.h> +#include <linux/socket.h> + +typedef __s32 sctp_assoc_t; + +/* The following symbols come from the Sockets API Extensions for + * SCTP <draft-ietf-tsvwg-sctpsocket-07.txt>. + */ +enum sctp_optname { + SCTP_RTOINFO, +#define SCTP_RTOINFO SCTP_RTOINFO + SCTP_ASSOCINFO, +#define SCTP_ASSOCINFO SCTP_ASSOCINFO + SCTP_INITMSG, +#define SCTP_INITMSG SCTP_INITMSG + SCTP_NODELAY, /* Get/set nodelay option. */ +#define SCTP_NODELAY SCTP_NODELAY + SCTP_AUTOCLOSE, +#define SCTP_AUTOCLOSE SCTP_AUTOCLOSE + SCTP_SET_PEER_PRIMARY_ADDR, +#define SCTP_SET_PEER_PRIMARY_ADDR SCTP_SET_PEER_PRIMARY_ADDR + SCTP_PRIMARY_ADDR, +#define SCTP_PRIMARY_ADDR SCTP_PRIMARY_ADDR + SCTP_ADAPTION_LAYER, +#define SCTP_ADAPTION_LAYER SCTP_ADAPTION_LAYER + SCTP_DISABLE_FRAGMENTS, +#define SCTP_DISABLE_FRAGMENTS SCTP_DISABLE_FRAGMENTS + SCTP_PEER_ADDR_PARAMS, +#define SCTP_PEER_ADDR_PARAMS SCTP_PEER_ADDR_PARAMS + SCTP_DEFAULT_SEND_PARAM, +#define SCTP_DEFAULT_SEND_PARAM SCTP_DEFAULT_SEND_PARAM + SCTP_EVENTS, +#define SCTP_EVENTS SCTP_EVENTS + SCTP_I_WANT_MAPPED_V4_ADDR, /* Turn on/off mapped v4 addresses */ +#define SCTP_I_WANT_MAPPED_V4_ADDR SCTP_I_WANT_MAPPED_V4_ADDR + SCTP_MAXSEG, /* Get/set maximum fragment. */ +#define SCTP_MAXSEG SCTP_MAXSEG + SCTP_STATUS, +#define SCTP_STATUS SCTP_STATUS + SCTP_GET_PEER_ADDR_INFO, +#define SCTP_GET_PEER_ADDR_INFO SCTP_GET_PEER_ADDR_INFO + + /* Internal Socket Options. Some of the sctp library functions are + * implemented using these socket options. + */ + SCTP_SOCKOPT_BINDX_ADD = 100,/* BINDX requests for adding addresses. */ +#define SCTP_SOCKOPT_BINDX_ADD SCTP_SOCKOPT_BINDX_ADD + SCTP_SOCKOPT_BINDX_REM, /* BINDX requests for removing addresses. */ +#define SCTP_SOCKOPT_BINDX_REM SCTP_SOCKOPT_BINDX_REM + SCTP_SOCKOPT_PEELOFF, /* peel off association. */ +#define SCTP_SOCKOPT_PEELOFF SCTP_SOCKOPT_PEELOFF + SCTP_GET_PEER_ADDRS_NUM, /* Get number of peer addresss. */ +#define SCTP_GET_PEER_ADDRS_NUM SCTP_GET_PEER_ADDRS_NUM + SCTP_GET_PEER_ADDRS, /* Get all peer addresss. */ +#define SCTP_GET_PEER_ADDRS SCTP_GET_PEER_ADDRS + SCTP_GET_LOCAL_ADDRS_NUM, /* Get number of local addresss. */ +#define SCTP_GET_LOCAL_ADDRS_NUM SCTP_GET_LOCAL_ADDRS_NUM + SCTP_GET_LOCAL_ADDRS, /* Get all local addresss. */ +#define SCTP_GET_LOCAL_ADDRS SCTP_GET_LOCAL_ADDRS +}; + +/* + * 5.2.1 SCTP Initiation Structure (SCTP_INIT) + * + * This cmsghdr structure provides information for initializing new + * SCTP associations with sendmsg(). The SCTP_INITMSG socket option + * uses this same data structure. This structure is not used for + * recvmsg(). + * + * cmsg_level cmsg_type cmsg_data[] + * ------------ ------------ ---------------------- + * IPPROTO_SCTP SCTP_INIT struct sctp_initmsg + * + */ +struct sctp_initmsg { + __u16 sinit_num_ostreams; + __u16 sinit_max_instreams; + __u16 sinit_max_attempts; + __u16 sinit_max_init_timeo; +}; + +/* + * 5.2.2 SCTP Header Information Structure (SCTP_SNDRCV) + * + * This cmsghdr structure specifies SCTP options for sendmsg() and + * describes SCTP header information about a received message through + * recvmsg(). + * + * cmsg_level cmsg_type cmsg_data[] + * ------------ ------------ ---------------------- + * IPPROTO_SCTP SCTP_SNDRCV struct sctp_sndrcvinfo + * + */ +struct sctp_sndrcvinfo { + __u16 sinfo_stream; + __u16 sinfo_ssn; + __u16 sinfo_flags; + __u32 sinfo_ppid; + __u32 sinfo_context; + __u32 sinfo_timetolive; + __u32 sinfo_tsn; + __u32 sinfo_cumtsn; + sctp_assoc_t sinfo_assoc_id; +}; + +/* + * sinfo_flags: 16 bits (unsigned integer) + * + * This field may contain any of the following flags and is composed of + * a bitwise OR of these values. + */ + +enum sctp_sinfo_flags { + MSG_UNORDERED = 1, /* Send/receive message unordered. */ + MSG_ADDR_OVER = 2, /* Override the primary destination. */ + MSG_ABORT=4, /* Send an ABORT message to the peer. */ + /* MSG_EOF is already defined per socket.h */ +}; + + +typedef union { + __u8 raw; + struct sctp_initmsg init; + struct sctp_sndrcvinfo sndrcv; +} sctp_cmsg_data_t; + +/* These are cmsg_types. */ +typedef enum sctp_cmsg_type { + SCTP_INIT, /* 5.2.1 SCTP Initiation Structure */ + SCTP_SNDRCV, /* 5.2.2 SCTP Header Information Structure */ +} sctp_cmsg_t; + + +/* + * 5.3.1.1 SCTP_ASSOC_CHANGE + * + * Communication notifications inform the ULP that an SCTP association + * has either begun or ended. The identifier for a new association is + * provided by this notificaion. The notification information has the + * following format: + * + */ +struct sctp_assoc_change { + __u16 sac_type; + __u16 sac_flags; + __u32 sac_length; + __u16 sac_state; + __u16 sac_error; + __u16 sac_outbound_streams; + __u16 sac_inbound_streams; + sctp_assoc_t sac_assoc_id; +}; + +/* + * sac_state: 32 bits (signed integer) + * + * This field holds one of a number of values that communicate the + * event that happened to the association. They include: + * + * Note: The following state names deviate from the API draft as + * the names clash too easily with other kernel symbols. + */ +enum sctp_sac_state { + SCTP_COMM_UP, + SCTP_COMM_LOST, + SCTP_RESTART, + SCTP_SHUTDOWN_COMP, + SCTP_CANT_STR_ASSOC, +}; + +/* + * 5.3.1.2 SCTP_PEER_ADDR_CHANGE + * + * When a destination address on a multi-homed peer encounters a change + * an interface details event is sent. The information has the + * following structure: + */ +struct sctp_paddr_change { + __u16 spc_type; + __u16 spc_flags; + __u32 spc_length; + struct sockaddr_storage spc_aaddr; + int spc_state; + int spc_error; + sctp_assoc_t spc_assoc_id; +}; + +/* + * spc_state: 32 bits (signed integer) + * + * This field holds one of a number of values that communicate the + * event that happened to the address. They include: + */ +enum sctp_spc_state { + SCTP_ADDR_AVAILABLE, + SCTP_ADDR_UNREACHABLE, + SCTP_ADDR_REMOVED, + SCTP_ADDR_ADDED, + SCTP_ADDR_MADE_PRIM, +}; + + +/* + * 5.3.1.3 SCTP_REMOTE_ERROR + * + * A remote peer may send an Operational Error message to its peer. + * This message indicates a variety of error conditions on an + * association. The entire error TLV as it appears on the wire is + * included in a SCTP_REMOTE_ERROR event. Please refer to the SCTP + * specification [SCTP] and any extensions for a list of possible + * error formats. SCTP error TLVs have the format: + */ +struct sctp_remote_error { + __u16 sre_type; + __u16 sre_flags; + __u32 sre_length; + __u16 sre_error; + sctp_assoc_t sre_assoc_id; + __u8 sre_data[0]; +}; + + +/* + * 5.3.1.4 SCTP_SEND_FAILED + * + * If SCTP cannot deliver a message it may return the message as a + * notification. + */ +struct sctp_send_failed { + __u16 ssf_type; + __u16 ssf_flags; + __u32 ssf_length; + __u32 ssf_error; + struct sctp_sndrcvinfo ssf_info; + sctp_assoc_t ssf_assoc_id; + __u8 ssf_data[0]; +}; + +/* + * ssf_flags: 16 bits (unsigned integer) + * + * The flag value will take one of the following values + * + * SCTP_DATA_UNSENT - Indicates that the data was never put on + * the wire. + * + * SCTP_DATA_SENT - Indicates that the data was put on the wire. + * Note that this does not necessarily mean that the + * data was (or was not) successfully delivered. + */ +enum sctp_ssf_flags { + SCTP_DATA_UNSENT, + SCTP_DATA_SENT, +}; + +/* + * 5.3.1.5 SCTP_SHUTDOWN_EVENT + * + * When a peer sends a SHUTDOWN, SCTP delivers this notification to + * inform the application that it should cease sending data. + */ +struct sctp_shutdown_event { + __u16 sse_type; + __u16 sse_flags; + __u32 sse_length; + sctp_assoc_t sse_assoc_id; +}; + +/* + * 5.3.1.6 SCTP_ADAPTION_INDICATION + * + * When a peer sends a Adaption Layer Indication parameter , SCTP + * delivers this notification to inform the application + * that of the peers requested adaption layer. + */ +struct sctp_adaption_event { + __u16 sai_type; + __u16 sai_flags; + __u32 sai_length; + __u32 sai_adaption_ind; + sctp_assoc_t sai_assoc_id; +}; + +/* + * 5.3.1.7 SCTP_PARTIAL_DELIVERY_EVENT + * + * When a receiver is engaged in a partial delivery of a + * message this notification will be used to indicate + * various events. + */ +struct sctp_pdapi_event { + __u16 pdapi_type; + __u16 pdapi_flags; + __u32 pdapi_length; + __u32 pdapi_indication; + sctp_assoc_t pdapi_assoc_id; +}; + +enum { SCTP_PARTIAL_DELIVERY_ABORTED=0, }; + +/* + * Described in Section 7.3 + * Ancillary Data and Notification Interest Options + */ +struct sctp_event_subscribe { + __u8 sctp_data_io_event; + __u8 sctp_association_event; + __u8 sctp_address_event; + __u8 sctp_send_failure_event; + __u8 sctp_peer_error_event; + __u8 sctp_shutdown_event; + __u8 sctp_partial_delivery_event; + __u8 sctp_adaption_layer_event; +}; + +/* + * 5.3.1 SCTP Notification Structure + * + * The notification structure is defined as the union of all + * notification types. + * + */ +union sctp_notification { + struct { + __u16 sn_type; /* Notification type. */ + __u16 sn_flags; + __u32 sn_length; + } sn_header; + struct sctp_assoc_change sn_assoc_change; + struct sctp_paddr_change sn_paddr_change; + struct sctp_remote_error sn_remote_error; + struct sctp_send_failed sn_send_failed; + struct sctp_shutdown_event sn_shutdown_event; + struct sctp_adaption_event sn_adaption_event; + struct sctp_pdapi_event sn_pdapi_event; +}; + +/* Section 5.3.1 + * All standard values for sn_type flags are greater than 2^15. + * Values from 2^15 and down are reserved. + */ + +enum sctp_sn_type { + SCTP_SN_TYPE_BASE = (1<<15), + SCTP_ASSOC_CHANGE, + SCTP_PEER_ADDR_CHANGE, + SCTP_SEND_FAILED, + SCTP_REMOTE_ERROR, + SCTP_SHUTDOWN_EVENT, + SCTP_PARTIAL_DELIVERY_EVENT, + SCTP_ADAPTION_INDICATION, +}; + +/* Notification error codes used to fill up the error fields in some + * notifications. + * SCTP_PEER_ADDRESS_CHAGE : spc_error + * SCTP_ASSOC_CHANGE : sac_error + * These names should be potentially included in the draft 04 of the SCTP + * sockets API specification. + */ +typedef enum sctp_sn_error { + SCTP_FAILED_THRESHOLD, + SCTP_RECEIVED_SACK, + SCTP_HEARTBEAT_SUCCESS, + SCTP_RESPONSE_TO_USER_REQ, + SCTP_INTERNAL_ERROR, + SCTP_SHUTDOWN_GUARD_EXPIRES, + SCTP_PEER_FAULTY, +} sctp_sn_error_t; + +/* + * 7.1.1 Retransmission Timeout Parameters (SCTP_RTOINFO) + * + * The protocol parameters used to initialize and bound retransmission + * timeout (RTO) are tunable. See [SCTP] for more information on how + * these parameters are used in RTO calculation. + */ +struct sctp_rtoinfo { + sctp_assoc_t srto_assoc_id; + __u32 srto_initial; + __u32 srto_max; + __u32 srto_min; +}; + +/* + * 7.1.2 Association Parameters (SCTP_ASSOCINFO) + * + * This option is used to both examine and set various association and + * endpoint parameters. + */ +struct sctp_assocparams { + sctp_assoc_t sasoc_assoc_id; + __u16 sasoc_asocmaxrxt; + __u16 sasoc_number_peer_destinations; + __u32 sasoc_peer_rwnd; + __u32 sasoc_local_rwnd; + __u32 sasoc_cookie_life; +}; + +/* + * 7.1.9 Set Peer Primary Address (SCTP_SET_PEER_PRIMARY_ADDR) + * + * Requests that the peer mark the enclosed address as the association + * primary. The enclosed address must be one of the association's + * locally bound addresses. The following structure is used to make a + * set primary request: + */ +struct sctp_setpeerprim { + sctp_assoc_t sspp_assoc_id; + struct sockaddr_storage sspp_addr; +}; + +/* + * 7.1.10 Set Primary Address (SCTP_PRIMARY_ADDR) + * + * Requests that the local SCTP stack use the enclosed peer address as + * the association primary. The enclosed address must be one of the + * association peer's addresses. The following structure is used to + * make a set peer primary request: + */ +struct sctp_prim { + sctp_assoc_t ssp_assoc_id; + struct sockaddr_storage ssp_addr; +}; + +/* + * 7.1.11 Set Adaption Layer Indicator (SCTP_ADAPTION_LAYER) + * + * Requests that the local endpoint set the specified Adaption Layer + * Indication parameter for all future INIT and INIT-ACK exchanges. + */ +struct sctp_setadaption { + __u32 ssb_adaption_ind; +}; + +/* + * 7.1.13 Peer Address Parameters (SCTP_PEER_ADDR_PARAMS) + * + * Applications can enable or disable heartbeats for any peer address + * of an association, modify an address's heartbeat interval, force a + * heartbeat to be sent immediately, and adjust the address's maximum + * number of retransmissions sent before an address is considered + * unreachable. The following structure is used to access and modify an + * address's parameters: + */ +struct sctp_paddrparams { + sctp_assoc_t spp_assoc_id; + struct sockaddr_storage spp_address; + __u32 spp_hbinterval; + __u16 spp_pathmaxrxt; +}; + +/* + * 7.2.2 Peer Address Information + * + * Applications can retrieve information about a specific peer address + * of an association, including its reachability state, congestion + * window, and retransmission timer values. This information is + * read-only. The following structure is used to access this + * information: + */ +struct sctp_paddrinfo { + sctp_assoc_t spinfo_assoc_id; + struct sockaddr_storage spinfo_address; + __s32 spinfo_state; + __u32 spinfo_cwnd; + __u32 spinfo_srtt; + __u32 spinfo_rto; + __u32 spinfo_mtu; +}; + +/* Peer addresses's state. */ +enum sctp_spinfo_state { + SCTP_INACTIVE, + SCTP_ACTIVE, +}; + +/* + * 7.2.1 Association Status (SCTP_STATUS) + * + * Applications can retrieve current status information about an + * association, including association state, peer receiver window size, + * number of unacked data chunks, and number of data chunks pending + * receipt. This information is read-only. The following structure is + * used to access this information: + */ +struct sctp_status { + sctp_assoc_t sstat_assoc_id; + __s32 sstat_state; + __u32 sstat_rwnd; + __u16 sstat_unackdata; + __u16 sstat_penddata; + __u16 sstat_instrms; + __u16 sstat_outstrms; + __u32 sstat_fragmentation_point; + struct sctp_paddrinfo sstat_primary; +}; + +/* + * 8.3, 8.5 get all peer/local addresses in an association. + * This parameter struct is used by SCTP_GET_PEER_ADDRS and + * SCTP_GET_LOCAL_ADDRS socket options used internally to implement + * sctp_getpaddrs() and sctp_getladdrs() API. + */ +struct sctp_getaddrs { + sctp_assoc_t assoc_id; + int addr_num; + struct sockaddr __user *addrs; +}; + +/* These are bit fields for msghdr->msg_flags. See section 5.1. */ +/* On user space Linux, these live in <bits/socket.h> as an enum. */ +enum sctp_msg_flags { + MSG_NOTIFICATION = 0x8000, +#define MSG_NOTIFICATION MSG_NOTIFICATION +}; + +/* + * 8.1 sctp_bindx() + * + * The flags parameter is formed from the bitwise OR of zero or more of the + * following currently defined flags: + */ +#define SCTP_BINDX_ADD_ADDR 0x01 +#define SCTP_BINDX_REM_ADDR 0x02 + +/* This is the structure that is passed as an argument(optval) to + * getsockopt(SCTP_SOCKOPT_PEELOFF). + */ +typedef struct { + sctp_assoc_t associd; + int sd; +} sctp_peeloff_arg_t; + +#endif /* __net_sctp_user_h__ */ diff --git a/include/net/slhc_vj.h b/include/net/slhc_vj.h new file mode 100644 index 000000000000..0b2c2784f333 --- /dev/null +++ b/include/net/slhc_vj.h @@ -0,0 +1,188 @@ +#ifndef _SLHC_H +#define _SLHC_H +/* + * Definitions for tcp compression routines. + * + * $Header: slcompress.h,v 1.10 89/12/31 08:53:02 van Exp $ + * + * Copyright (c) 1989 Regents of the University of California. + * All rights reserved. + * + * Redistribution and use in source and binary forms are permitted + * provided that the above copyright notice and this paragraph are + * duplicated in all such forms and that any documentation, + * advertising materials, and other materials related to such + * distribution and use acknowledge that the software was developed + * by the University of California, Berkeley. The name of the + * University may not be used to endorse or promote products derived + * from this software without specific prior written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * Van Jacobson (van@helios.ee.lbl.gov), Dec 31, 1989: + * - Initial distribution. + * + * + * modified for KA9Q Internet Software Package by + * Katie Stevens (dkstevens@ucdavis.edu) + * University of California, Davis + * Computing Services + * - 01-31-90 initial adaptation + * + * - Feb 1991 Bill_Simpson@um.cc.umich.edu + * variable number of conversation slots + * allow zero or one slots + * separate routines + * status display + */ + +/* + * Compressed packet format: + * + * The first octet contains the packet type (top 3 bits), TCP + * 'push' bit, and flags that indicate which of the 4 TCP sequence + * numbers have changed (bottom 5 bits). The next octet is a + * conversation number that associates a saved IP/TCP header with + * the compressed packet. The next two octets are the TCP checksum + * from the original datagram. The next 0 to 15 octets are + * sequence number changes, one change per bit set in the header + * (there may be no changes and there are two special cases where + * the receiver implicitly knows what changed -- see below). + * + * There are 5 numbers which can change (they are always inserted + * in the following order): TCP urgent pointer, window, + * acknowledgment, sequence number and IP ID. (The urgent pointer + * is different from the others in that its value is sent, not the + * change in value.) Since typical use of SLIP links is biased + * toward small packets (see comments on MTU/MSS below), changes + * use a variable length coding with one octet for numbers in the + * range 1 - 255 and 3 octets (0, MSB, LSB) for numbers in the + * range 256 - 65535 or 0. (If the change in sequence number or + * ack is more than 65535, an uncompressed packet is sent.) + */ + +/* + * Packet types (must not conflict with IP protocol version) + * + * The top nibble of the first octet is the packet type. There are + * three possible types: IP (not proto TCP or tcp with one of the + * control flags set); uncompressed TCP (a normal IP/TCP packet but + * with the 8-bit protocol field replaced by an 8-bit connection id -- + * this type of packet syncs the sender & receiver); and compressed + * TCP (described above). + * + * LSB of 4-bit field is TCP "PUSH" bit (a worthless anachronism) and + * is logically part of the 4-bit "changes" field that follows. Top + * three bits are actual packet type. For backward compatibility + * and in the interest of conserving bits, numbers are chosen so the + * IP protocol version number (4) which normally appears in this nibble + * means "IP packet". + */ + + +#include <linux/ip.h> +#include <linux/tcp.h> + +/* SLIP compression masks for len/vers byte */ +#define SL_TYPE_IP 0x40 +#define SL_TYPE_UNCOMPRESSED_TCP 0x70 +#define SL_TYPE_COMPRESSED_TCP 0x80 +#define SL_TYPE_ERROR 0x00 + +/* Bits in first octet of compressed packet */ +#define NEW_C 0x40 /* flag bits for what changed in a packet */ +#define NEW_I 0x20 +#define NEW_S 0x08 +#define NEW_A 0x04 +#define NEW_W 0x02 +#define NEW_U 0x01 + +/* reserved, special-case values of above */ +#define SPECIAL_I (NEW_S|NEW_W|NEW_U) /* echoed interactive traffic */ +#define SPECIAL_D (NEW_S|NEW_A|NEW_W|NEW_U) /* unidirectional data */ +#define SPECIALS_MASK (NEW_S|NEW_A|NEW_W|NEW_U) + +#define TCP_PUSH_BIT 0x10 + +/* + * data type and sizes conversion assumptions: + * + * VJ code KA9Q style generic + * u_char byte_t unsigned char 8 bits + * u_short int16 unsigned short 16 bits + * u_int int16 unsigned short 16 bits + * u_long unsigned long unsigned long 32 bits + * int int32 long 32 bits + */ + +typedef __u8 byte_t; +typedef __u32 int32; + +/* + * "state" data for each active tcp conversation on the wire. This is + * basically a copy of the entire IP/TCP header from the last packet + * we saw from the conversation together with a small identifier + * the transmit & receive ends of the line use to locate saved header. + */ +struct cstate { + byte_t cs_this; /* connection id number (xmit) */ + struct cstate *next; /* next in ring (xmit) */ + struct iphdr cs_ip; /* ip/tcp hdr from most recent packet */ + struct tcphdr cs_tcp; + unsigned char cs_ipopt[64]; + unsigned char cs_tcpopt[64]; + int cs_hsize; +}; +#define NULLSLSTATE (struct cstate *)0 + +/* + * all the state data for one serial line (we need one of these per line). + */ +struct slcompress { + struct cstate *tstate; /* transmit connection states (array)*/ + struct cstate *rstate; /* receive connection states (array)*/ + + byte_t tslot_limit; /* highest transmit slot id (0-l)*/ + byte_t rslot_limit; /* highest receive slot id (0-l)*/ + + byte_t xmit_oldest; /* oldest xmit in ring */ + byte_t xmit_current; /* most recent xmit id */ + byte_t recv_current; /* most recent rcvd id */ + + byte_t flags; +#define SLF_TOSS 0x01 /* tossing rcvd frames until id received */ + + int32 sls_o_nontcp; /* outbound non-TCP packets */ + int32 sls_o_tcp; /* outbound TCP packets */ + int32 sls_o_uncompressed; /* outbound uncompressed packets */ + int32 sls_o_compressed; /* outbound compressed packets */ + int32 sls_o_searches; /* searches for connection state */ + int32 sls_o_misses; /* times couldn't find conn. state */ + + int32 sls_i_uncompressed; /* inbound uncompressed packets */ + int32 sls_i_compressed; /* inbound compressed packets */ + int32 sls_i_error; /* inbound error packets */ + int32 sls_i_tossed; /* inbound packets tossed because of error */ + + int32 sls_i_runt; + int32 sls_i_badcheck; +}; +#define NULLSLCOMPR (struct slcompress *)0 + +#define __ARGS(x) x + +/* In slhc.c: */ +struct slcompress *slhc_init __ARGS((int rslots, int tslots)); +void slhc_free __ARGS((struct slcompress *comp)); + +int slhc_compress __ARGS((struct slcompress *comp, unsigned char *icp, + int isize, unsigned char *ocp, unsigned char **cpp, + int compress_cid)); +int slhc_uncompress __ARGS((struct slcompress *comp, unsigned char *icp, + int isize)); +int slhc_remember __ARGS((struct slcompress *comp, unsigned char *icp, + int isize)); +int slhc_toss __ARGS((struct slcompress *comp)); + +#endif /* _SLHC_H */ diff --git a/include/net/snmp.h b/include/net/snmp.h new file mode 100644 index 000000000000..a15ab256276e --- /dev/null +++ b/include/net/snmp.h @@ -0,0 +1,145 @@ +/* + * + * SNMP MIB entries for the IP subsystem. + * + * Alan Cox <gw4pts@gw4pts.ampr.org> + * + * We don't chose to implement SNMP in the kernel (this would + * be silly as SNMP is a pain in the backside in places). We do + * however need to collect the MIB statistics and export them + * out of /proc (eventually) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * $Id: snmp.h,v 1.19 2001/06/14 13:40:46 davem Exp $ + * + */ + +#ifndef _SNMP_H +#define _SNMP_H + +#include <linux/cache.h> +#include <linux/snmp.h> + +/* + * Mibs are stored in array of unsigned long. + */ +/* + * struct snmp_mib{} + * - list of entries for particular API (such as /proc/net/snmp) + * - name of entries. + */ +struct snmp_mib { + char *name; + int entry; +}; + +#define SNMP_MIB_ITEM(_name,_entry) { \ + .name = _name, \ + .entry = _entry, \ +} + +#define SNMP_MIB_SENTINEL { \ + .name = NULL, \ + .entry = 0, \ +} + +/* + * We use all unsigned longs. Linux will soon be so reliable that even + * these will rapidly get too small 8-). Seriously consider the IpInReceives + * count on the 20Gb/s + networks people expect in a few years time! + */ + +/* + * The rule for padding: + * Best is power of two because then the right structure can be found by a + * simple shift. The structure should be always cache line aligned. + * gcc needs n=alignto(cachelinesize, popcnt(sizeof(bla_mib))) shift/add + * instructions to emulate multiply in case it is not power-of-two. + * Currently n is always <=3 for all sizes so simple cache line alignment + * is enough. + * + * The best solution would be a global CPU local area , especially on 64 + * and 128byte cacheline machine it makes a *lot* of sense -AK + */ + +#define __SNMP_MIB_ALIGN__ ____cacheline_aligned + +/* IPstats */ +#define IPSTATS_MIB_MAX __IPSTATS_MIB_MAX +struct ipstats_mib { + unsigned long mibs[IPSTATS_MIB_MAX]; +} __SNMP_MIB_ALIGN__; + +/* ICMP */ +#define ICMP_MIB_DUMMY __ICMP_MIB_MAX +#define ICMP_MIB_MAX (__ICMP_MIB_MAX + 1) + +struct icmp_mib { + unsigned long mibs[ICMP_MIB_MAX]; +} __SNMP_MIB_ALIGN__; + +/* ICMP6 (IPv6-ICMP) */ +#define ICMP6_MIB_MAX __ICMP6_MIB_MAX +struct icmpv6_mib { + unsigned long mibs[ICMP6_MIB_MAX]; +} __SNMP_MIB_ALIGN__; + +/* TCP */ +#define TCP_MIB_MAX __TCP_MIB_MAX +struct tcp_mib { + unsigned long mibs[TCP_MIB_MAX]; +} __SNMP_MIB_ALIGN__; + +/* UDP */ +#define UDP_MIB_MAX __UDP_MIB_MAX +struct udp_mib { + unsigned long mibs[UDP_MIB_MAX]; +} __SNMP_MIB_ALIGN__; + +/* SCTP */ +#define SCTP_MIB_MAX __SCTP_MIB_MAX +struct sctp_mib { + unsigned long mibs[SCTP_MIB_MAX]; +} __SNMP_MIB_ALIGN__; + +/* Linux */ +#define LINUX_MIB_MAX __LINUX_MIB_MAX +struct linux_mib { + unsigned long mibs[LINUX_MIB_MAX]; +}; + + +/* + * FIXME: On x86 and some other CPUs the split into user and softirq parts + * is not needed because addl $1,memory is atomic against interrupts (but + * atomic_inc would be overkill because of the lock cycles). Wants new + * nonlocked_atomic_inc() primitives -AK + */ +#define DEFINE_SNMP_STAT(type, name) \ + __typeof__(type) *name[2] +#define DECLARE_SNMP_STAT(type, name) \ + extern __typeof__(type) *name[2] + +#define SNMP_STAT_BHPTR(name) (name[0]) +#define SNMP_STAT_USRPTR(name) (name[1]) + +#define SNMP_INC_STATS_BH(mib, field) \ + (per_cpu_ptr(mib[0], _smp_processor_id())->mibs[field]++) +#define SNMP_INC_STATS_OFFSET_BH(mib, field, offset) \ + (per_cpu_ptr(mib[0], _smp_processor_id())->mibs[field + (offset)]++) +#define SNMP_INC_STATS_USER(mib, field) \ + (per_cpu_ptr(mib[1], _smp_processor_id())->mibs[field]++) +#define SNMP_INC_STATS(mib, field) \ + (per_cpu_ptr(mib[!in_softirq()], _smp_processor_id())->mibs[field]++) +#define SNMP_DEC_STATS(mib, field) \ + (per_cpu_ptr(mib[!in_softirq()], _smp_processor_id())->mibs[field]--) +#define SNMP_ADD_STATS_BH(mib, field, addend) \ + (per_cpu_ptr(mib[0], _smp_processor_id())->mibs[field] += addend) +#define SNMP_ADD_STATS_USER(mib, field, addend) \ + (per_cpu_ptr(mib[1], _smp_processor_id())->mibs[field] += addend) + +#endif diff --git a/include/net/sock.h b/include/net/sock.h new file mode 100644 index 000000000000..be81cabd0da3 --- /dev/null +++ b/include/net/sock.h @@ -0,0 +1,1297 @@ +/* + * INET An implementation of the TCP/IP protocol suite for the LINUX + * operating system. INET is implemented using the BSD Socket + * interface as the means of communication with the user level. + * + * Definitions for the AF_INET socket handler. + * + * Version: @(#)sock.h 1.0.4 05/13/93 + * + * Authors: Ross Biro, <bir7@leland.Stanford.Edu> + * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> + * Corey Minyard <wf-rch!minyard@relay.EU.net> + * Florian La Roche <flla@stud.uni-sb.de> + * + * Fixes: + * Alan Cox : Volatiles in skbuff pointers. See + * skbuff comments. May be overdone, + * better to prove they can be removed + * than the reverse. + * Alan Cox : Added a zapped field for tcp to note + * a socket is reset and must stay shut up + * Alan Cox : New fields for options + * Pauline Middelink : identd support + * Alan Cox : Eliminate low level recv/recvfrom + * David S. Miller : New socket lookup architecture. + * Steve Whitehouse: Default routines for sock_ops + * Arnaldo C. Melo : removed net_pinfo, tp_pinfo and made + * protinfo be just a void pointer, as the + * protocol specific parts were moved to + * respective headers and ipv4/v6, etc now + * use private slabcaches for its socks + * Pedro Hortas : New flags field for socket options + * + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#ifndef _SOCK_H +#define _SOCK_H + +#include <linux/config.h> +#include <linux/list.h> +#include <linux/timer.h> +#include <linux/cache.h> +#include <linux/module.h> +#include <linux/netdevice.h> +#include <linux/skbuff.h> /* struct sk_buff */ +#include <linux/security.h> + +#include <linux/filter.h> + +#include <asm/atomic.h> +#include <net/dst.h> +#include <net/checksum.h> + +/* + * This structure really needs to be cleaned up. + * Most of it is for TCP, and not used by any of + * the other protocols. + */ + +/* Define this to get the SOCK_DBG debugging facility. */ +#define SOCK_DEBUGGING +#ifdef SOCK_DEBUGGING +#define SOCK_DEBUG(sk, msg...) do { if ((sk) && sock_flag((sk), SOCK_DBG)) \ + printk(KERN_DEBUG msg); } while (0) +#else +#define SOCK_DEBUG(sk, msg...) do { } while (0) +#endif + +/* This is the per-socket lock. The spinlock provides a synchronization + * between user contexts and software interrupt processing, whereas the + * mini-semaphore synchronizes multiple users amongst themselves. + */ +struct sock_iocb; +typedef struct { + spinlock_t slock; + struct sock_iocb *owner; + wait_queue_head_t wq; +} socket_lock_t; + +#define sock_lock_init(__sk) \ +do { spin_lock_init(&((__sk)->sk_lock.slock)); \ + (__sk)->sk_lock.owner = NULL; \ + init_waitqueue_head(&((__sk)->sk_lock.wq)); \ +} while(0) + +struct sock; + +/** + * struct sock_common - minimal network layer representation of sockets + * @skc_family - network address family + * @skc_state - Connection state + * @skc_reuse - %SO_REUSEADDR setting + * @skc_bound_dev_if - bound device index if != 0 + * @skc_node - main hash linkage for various protocol lookup tables + * @skc_bind_node - bind hash linkage for various protocol lookup tables + * @skc_refcnt - reference count + * + * This is the minimal network layer representation of sockets, the header + * for struct sock and struct tcp_tw_bucket. + */ +struct sock_common { + unsigned short skc_family; + volatile unsigned char skc_state; + unsigned char skc_reuse; + int skc_bound_dev_if; + struct hlist_node skc_node; + struct hlist_node skc_bind_node; + atomic_t skc_refcnt; +}; + +/** + * struct sock - network layer representation of sockets + * @__sk_common - shared layout with tcp_tw_bucket + * @sk_shutdown - mask of %SEND_SHUTDOWN and/or %RCV_SHUTDOWN + * @sk_userlocks - %SO_SNDBUF and %SO_RCVBUF settings + * @sk_lock - synchronizer + * @sk_rcvbuf - size of receive buffer in bytes + * @sk_sleep - sock wait queue + * @sk_dst_cache - destination cache + * @sk_dst_lock - destination cache lock + * @sk_policy - flow policy + * @sk_rmem_alloc - receive queue bytes committed + * @sk_receive_queue - incoming packets + * @sk_wmem_alloc - transmit queue bytes committed + * @sk_write_queue - Packet sending queue + * @sk_omem_alloc - "o" is "option" or "other" + * @sk_wmem_queued - persistent queue size + * @sk_forward_alloc - space allocated forward + * @sk_allocation - allocation mode + * @sk_sndbuf - size of send buffer in bytes + * @sk_flags - %SO_LINGER (l_onoff), %SO_BROADCAST, %SO_KEEPALIVE, %SO_OOBINLINE settings + * @sk_no_check - %SO_NO_CHECK setting, wether or not checkup packets + * @sk_route_caps - route capabilities (e.g. %NETIF_F_TSO) + * @sk_lingertime - %SO_LINGER l_linger setting + * @sk_hashent - hash entry in several tables (e.g. tcp_ehash) + * @sk_backlog - always used with the per-socket spinlock held + * @sk_callback_lock - used with the callbacks in the end of this struct + * @sk_error_queue - rarely used + * @sk_prot - protocol handlers inside a network family + * @sk_err - last error + * @sk_err_soft - errors that don't cause failure but are the cause of a persistent failure not just 'timed out' + * @sk_ack_backlog - current listen backlog + * @sk_max_ack_backlog - listen backlog set in listen() + * @sk_priority - %SO_PRIORITY setting + * @sk_type - socket type (%SOCK_STREAM, etc) + * @sk_protocol - which protocol this socket belongs in this network family + * @sk_peercred - %SO_PEERCRED setting + * @sk_rcvlowat - %SO_RCVLOWAT setting + * @sk_rcvtimeo - %SO_RCVTIMEO setting + * @sk_sndtimeo - %SO_SNDTIMEO setting + * @sk_filter - socket filtering instructions + * @sk_protinfo - private area, net family specific, when not using slab + * @sk_timer - sock cleanup timer + * @sk_stamp - time stamp of last packet received + * @sk_socket - Identd and reporting IO signals + * @sk_user_data - RPC layer private data + * @sk_sndmsg_page - cached page for sendmsg + * @sk_sndmsg_off - cached offset for sendmsg + * @sk_send_head - front of stuff to transmit + * @sk_write_pending - a write to stream socket waits to start + * @sk_state_change - callback to indicate change in the state of the sock + * @sk_data_ready - callback to indicate there is data to be processed + * @sk_write_space - callback to indicate there is bf sending space available + * @sk_error_report - callback to indicate errors (e.g. %MSG_ERRQUEUE) + * @sk_backlog_rcv - callback to process the backlog + * @sk_destruct - called at sock freeing time, i.e. when all refcnt == 0 + */ +struct sock { + /* + * Now struct tcp_tw_bucket also uses sock_common, so please just + * don't add nothing before this first member (__sk_common) --acme + */ + struct sock_common __sk_common; +#define sk_family __sk_common.skc_family +#define sk_state __sk_common.skc_state +#define sk_reuse __sk_common.skc_reuse +#define sk_bound_dev_if __sk_common.skc_bound_dev_if +#define sk_node __sk_common.skc_node +#define sk_bind_node __sk_common.skc_bind_node +#define sk_refcnt __sk_common.skc_refcnt + unsigned char sk_shutdown : 2, + sk_no_check : 2, + sk_userlocks : 4; + unsigned char sk_protocol; + unsigned short sk_type; + int sk_rcvbuf; + socket_lock_t sk_lock; + wait_queue_head_t *sk_sleep; + struct dst_entry *sk_dst_cache; + struct xfrm_policy *sk_policy[2]; + rwlock_t sk_dst_lock; + atomic_t sk_rmem_alloc; + atomic_t sk_wmem_alloc; + atomic_t sk_omem_alloc; + struct sk_buff_head sk_receive_queue; + struct sk_buff_head sk_write_queue; + int sk_wmem_queued; + int sk_forward_alloc; + unsigned int sk_allocation; + int sk_sndbuf; + int sk_route_caps; + int sk_hashent; + unsigned long sk_flags; + unsigned long sk_lingertime; + /* + * The backlog queue is special, it is always used with + * the per-socket spinlock held and requires low latency + * access. Therefore we special case it's implementation. + */ + struct { + struct sk_buff *head; + struct sk_buff *tail; + } sk_backlog; + struct sk_buff_head sk_error_queue; + struct proto *sk_prot; + rwlock_t sk_callback_lock; + int sk_err, + sk_err_soft; + unsigned short sk_ack_backlog; + unsigned short sk_max_ack_backlog; + __u32 sk_priority; + struct ucred sk_peercred; + int sk_rcvlowat; + long sk_rcvtimeo; + long sk_sndtimeo; + struct sk_filter *sk_filter; + void *sk_protinfo; + struct timer_list sk_timer; + struct timeval sk_stamp; + struct socket *sk_socket; + void *sk_user_data; + struct page *sk_sndmsg_page; + struct sk_buff *sk_send_head; + __u32 sk_sndmsg_off; + int sk_write_pending; + void *sk_security; + void (*sk_state_change)(struct sock *sk); + void (*sk_data_ready)(struct sock *sk, int bytes); + void (*sk_write_space)(struct sock *sk); + void (*sk_error_report)(struct sock *sk); + int (*sk_backlog_rcv)(struct sock *sk, + struct sk_buff *skb); + void (*sk_destruct)(struct sock *sk); +}; + +/* + * Hashed lists helper routines + */ +static inline struct sock *__sk_head(struct hlist_head *head) +{ + return hlist_entry(head->first, struct sock, sk_node); +} + +static inline struct sock *sk_head(struct hlist_head *head) +{ + return hlist_empty(head) ? NULL : __sk_head(head); +} + +static inline struct sock *sk_next(struct sock *sk) +{ + return sk->sk_node.next ? + hlist_entry(sk->sk_node.next, struct sock, sk_node) : NULL; +} + +static inline int sk_unhashed(struct sock *sk) +{ + return hlist_unhashed(&sk->sk_node); +} + +static inline int sk_hashed(struct sock *sk) +{ + return sk->sk_node.pprev != NULL; +} + +static __inline__ void sk_node_init(struct hlist_node *node) +{ + node->pprev = NULL; +} + +static __inline__ void __sk_del_node(struct sock *sk) +{ + __hlist_del(&sk->sk_node); +} + +static __inline__ int __sk_del_node_init(struct sock *sk) +{ + if (sk_hashed(sk)) { + __sk_del_node(sk); + sk_node_init(&sk->sk_node); + return 1; + } + return 0; +} + +/* Grab socket reference count. This operation is valid only + when sk is ALREADY grabbed f.e. it is found in hash table + or a list and the lookup is made under lock preventing hash table + modifications. + */ + +static inline void sock_hold(struct sock *sk) +{ + atomic_inc(&sk->sk_refcnt); +} + +/* Ungrab socket in the context, which assumes that socket refcnt + cannot hit zero, f.e. it is true in context of any socketcall. + */ +static inline void __sock_put(struct sock *sk) +{ + atomic_dec(&sk->sk_refcnt); +} + +static __inline__ int sk_del_node_init(struct sock *sk) +{ + int rc = __sk_del_node_init(sk); + + if (rc) { + /* paranoid for a while -acme */ + WARN_ON(atomic_read(&sk->sk_refcnt) == 1); + __sock_put(sk); + } + return rc; +} + +static __inline__ void __sk_add_node(struct sock *sk, struct hlist_head *list) +{ + hlist_add_head(&sk->sk_node, list); +} + +static __inline__ void sk_add_node(struct sock *sk, struct hlist_head *list) +{ + sock_hold(sk); + __sk_add_node(sk, list); +} + +static __inline__ void __sk_del_bind_node(struct sock *sk) +{ + __hlist_del(&sk->sk_bind_node); +} + +static __inline__ void sk_add_bind_node(struct sock *sk, + struct hlist_head *list) +{ + hlist_add_head(&sk->sk_bind_node, list); +} + +#define sk_for_each(__sk, node, list) \ + hlist_for_each_entry(__sk, node, list, sk_node) +#define sk_for_each_from(__sk, node) \ + if (__sk && ({ node = &(__sk)->sk_node; 1; })) \ + hlist_for_each_entry_from(__sk, node, sk_node) +#define sk_for_each_continue(__sk, node) \ + if (__sk && ({ node = &(__sk)->sk_node; 1; })) \ + hlist_for_each_entry_continue(__sk, node, sk_node) +#define sk_for_each_safe(__sk, node, tmp, list) \ + hlist_for_each_entry_safe(__sk, node, tmp, list, sk_node) +#define sk_for_each_bound(__sk, node, list) \ + hlist_for_each_entry(__sk, node, list, sk_bind_node) + +/* Sock flags */ +enum sock_flags { + SOCK_DEAD, + SOCK_DONE, + SOCK_URGINLINE, + SOCK_KEEPOPEN, + SOCK_LINGER, + SOCK_DESTROY, + SOCK_BROADCAST, + SOCK_TIMESTAMP, + SOCK_ZAPPED, + SOCK_USE_WRITE_QUEUE, /* whether to call sk->sk_write_space in sock_wfree */ + SOCK_DBG, /* %SO_DEBUG setting */ + SOCK_RCVTSTAMP, /* %SO_TIMESTAMP setting */ + SOCK_NO_LARGESEND, /* whether to sent large segments or not */ + SOCK_LOCALROUTE, /* route locally only, %SO_DONTROUTE setting */ + SOCK_QUEUE_SHRUNK, /* write queue has been shrunk recently */ +}; + +static inline void sock_set_flag(struct sock *sk, enum sock_flags flag) +{ + __set_bit(flag, &sk->sk_flags); +} + +static inline void sock_reset_flag(struct sock *sk, enum sock_flags flag) +{ + __clear_bit(flag, &sk->sk_flags); +} + +static inline int sock_flag(struct sock *sk, enum sock_flags flag) +{ + return test_bit(flag, &sk->sk_flags); +} + +static inline void sk_acceptq_removed(struct sock *sk) +{ + sk->sk_ack_backlog--; +} + +static inline void sk_acceptq_added(struct sock *sk) +{ + sk->sk_ack_backlog++; +} + +static inline int sk_acceptq_is_full(struct sock *sk) +{ + return sk->sk_ack_backlog > sk->sk_max_ack_backlog; +} + +/* + * Compute minimal free write space needed to queue new packets. + */ +static inline int sk_stream_min_wspace(struct sock *sk) +{ + return sk->sk_wmem_queued / 2; +} + +static inline int sk_stream_wspace(struct sock *sk) +{ + return sk->sk_sndbuf - sk->sk_wmem_queued; +} + +extern void sk_stream_write_space(struct sock *sk); + +static inline int sk_stream_memory_free(struct sock *sk) +{ + return sk->sk_wmem_queued < sk->sk_sndbuf; +} + +extern void sk_stream_rfree(struct sk_buff *skb); + +static inline void sk_stream_set_owner_r(struct sk_buff *skb, struct sock *sk) +{ + skb->sk = sk; + skb->destructor = sk_stream_rfree; + atomic_add(skb->truesize, &sk->sk_rmem_alloc); + sk->sk_forward_alloc -= skb->truesize; +} + +static inline void sk_stream_free_skb(struct sock *sk, struct sk_buff *skb) +{ + sock_set_flag(sk, SOCK_QUEUE_SHRUNK); + sk->sk_wmem_queued -= skb->truesize; + sk->sk_forward_alloc += skb->truesize; + __kfree_skb(skb); +} + +/* The per-socket spinlock must be held here. */ +#define sk_add_backlog(__sk, __skb) \ +do { if (!(__sk)->sk_backlog.tail) { \ + (__sk)->sk_backlog.head = \ + (__sk)->sk_backlog.tail = (__skb); \ + } else { \ + ((__sk)->sk_backlog.tail)->next = (__skb); \ + (__sk)->sk_backlog.tail = (__skb); \ + } \ + (__skb)->next = NULL; \ +} while(0) + +#define sk_wait_event(__sk, __timeo, __condition) \ +({ int rc; \ + release_sock(__sk); \ + rc = __condition; \ + if (!rc) { \ + *(__timeo) = schedule_timeout(*(__timeo)); \ + rc = __condition; \ + } \ + lock_sock(__sk); \ + rc; \ +}) + +extern int sk_stream_wait_connect(struct sock *sk, long *timeo_p); +extern int sk_stream_wait_memory(struct sock *sk, long *timeo_p); +extern void sk_stream_wait_close(struct sock *sk, long timeo_p); +extern int sk_stream_error(struct sock *sk, int flags, int err); +extern void sk_stream_kill_queues(struct sock *sk); + +extern int sk_wait_data(struct sock *sk, long *timeo); + +/* Networking protocol blocks we attach to sockets. + * socket layer -> transport layer interface + * transport -> network interface is defined by struct inet_proto + */ +struct proto { + void (*close)(struct sock *sk, + long timeout); + int (*connect)(struct sock *sk, + struct sockaddr *uaddr, + int addr_len); + int (*disconnect)(struct sock *sk, int flags); + + struct sock * (*accept) (struct sock *sk, int flags, int *err); + + int (*ioctl)(struct sock *sk, int cmd, + unsigned long arg); + int (*init)(struct sock *sk); + int (*destroy)(struct sock *sk); + void (*shutdown)(struct sock *sk, int how); + int (*setsockopt)(struct sock *sk, int level, + int optname, char __user *optval, + int optlen); + int (*getsockopt)(struct sock *sk, int level, + int optname, char __user *optval, + int __user *option); + int (*sendmsg)(struct kiocb *iocb, struct sock *sk, + struct msghdr *msg, size_t len); + int (*recvmsg)(struct kiocb *iocb, struct sock *sk, + struct msghdr *msg, + size_t len, int noblock, int flags, + int *addr_len); + int (*sendpage)(struct sock *sk, struct page *page, + int offset, size_t size, int flags); + int (*bind)(struct sock *sk, + struct sockaddr *uaddr, int addr_len); + + int (*backlog_rcv) (struct sock *sk, + struct sk_buff *skb); + + /* Keeping track of sk's, looking them up, and port selection methods. */ + void (*hash)(struct sock *sk); + void (*unhash)(struct sock *sk); + int (*get_port)(struct sock *sk, unsigned short snum); + + /* Memory pressure */ + void (*enter_memory_pressure)(void); + atomic_t *memory_allocated; /* Current allocated memory. */ + atomic_t *sockets_allocated; /* Current number of sockets. */ + /* + * Pressure flag: try to collapse. + * Technical note: it is used by multiple contexts non atomically. + * All the sk_stream_mem_schedule() is of this nature: accounting + * is strict, actions are advisory and have some latency. + */ + int *memory_pressure; + int *sysctl_mem; + int *sysctl_wmem; + int *sysctl_rmem; + int max_header; + + kmem_cache_t *slab; + unsigned int obj_size; + + struct module *owner; + + char name[32]; + + struct list_head node; + + struct { + int inuse; + u8 __pad[SMP_CACHE_BYTES - sizeof(int)]; + } stats[NR_CPUS]; +}; + +extern int proto_register(struct proto *prot, int alloc_slab); +extern void proto_unregister(struct proto *prot); + +/* Called with local bh disabled */ +static __inline__ void sock_prot_inc_use(struct proto *prot) +{ + prot->stats[smp_processor_id()].inuse++; +} + +static __inline__ void sock_prot_dec_use(struct proto *prot) +{ + prot->stats[smp_processor_id()].inuse--; +} + +/* About 10 seconds */ +#define SOCK_DESTROY_TIME (10*HZ) + +/* Sockets 0-1023 can't be bound to unless you are superuser */ +#define PROT_SOCK 1024 + +#define SHUTDOWN_MASK 3 +#define RCV_SHUTDOWN 1 +#define SEND_SHUTDOWN 2 + +#define SOCK_SNDBUF_LOCK 1 +#define SOCK_RCVBUF_LOCK 2 +#define SOCK_BINDADDR_LOCK 4 +#define SOCK_BINDPORT_LOCK 8 + +/* sock_iocb: used to kick off async processing of socket ios */ +struct sock_iocb { + struct list_head list; + + int flags; + int size; + struct socket *sock; + struct sock *sk; + struct scm_cookie *scm; + struct msghdr *msg, async_msg; + struct iovec async_iov; + struct kiocb *kiocb; +}; + +static inline struct sock_iocb *kiocb_to_siocb(struct kiocb *iocb) +{ + return (struct sock_iocb *)iocb->private; +} + +static inline struct kiocb *siocb_to_kiocb(struct sock_iocb *si) +{ + return si->kiocb; +} + +struct socket_alloc { + struct socket socket; + struct inode vfs_inode; +}; + +static inline struct socket *SOCKET_I(struct inode *inode) +{ + return &container_of(inode, struct socket_alloc, vfs_inode)->socket; +} + +static inline struct inode *SOCK_INODE(struct socket *socket) +{ + return &container_of(socket, struct socket_alloc, socket)->vfs_inode; +} + +extern void __sk_stream_mem_reclaim(struct sock *sk); +extern int sk_stream_mem_schedule(struct sock *sk, int size, int kind); + +#define SK_STREAM_MEM_QUANTUM ((int)PAGE_SIZE) + +static inline int sk_stream_pages(int amt) +{ + return (amt + SK_STREAM_MEM_QUANTUM - 1) / SK_STREAM_MEM_QUANTUM; +} + +static inline void sk_stream_mem_reclaim(struct sock *sk) +{ + if (sk->sk_forward_alloc >= SK_STREAM_MEM_QUANTUM) + __sk_stream_mem_reclaim(sk); +} + +static inline void sk_stream_writequeue_purge(struct sock *sk) +{ + struct sk_buff *skb; + + while ((skb = __skb_dequeue(&sk->sk_write_queue)) != NULL) + sk_stream_free_skb(sk, skb); + sk_stream_mem_reclaim(sk); +} + +static inline int sk_stream_rmem_schedule(struct sock *sk, struct sk_buff *skb) +{ + return (int)skb->truesize <= sk->sk_forward_alloc || + sk_stream_mem_schedule(sk, skb->truesize, 1); +} + +/* Used by processes to "lock" a socket state, so that + * interrupts and bottom half handlers won't change it + * from under us. It essentially blocks any incoming + * packets, so that we won't get any new data or any + * packets that change the state of the socket. + * + * While locked, BH processing will add new packets to + * the backlog queue. This queue is processed by the + * owner of the socket lock right before it is released. + * + * Since ~2.3.5 it is also exclusive sleep lock serializing + * accesses from user process context. + */ +#define sock_owned_by_user(sk) ((sk)->sk_lock.owner) + +extern void FASTCALL(lock_sock(struct sock *sk)); +extern void FASTCALL(release_sock(struct sock *sk)); + +/* BH context may only use the following locking interface. */ +#define bh_lock_sock(__sk) spin_lock(&((__sk)->sk_lock.slock)) +#define bh_unlock_sock(__sk) spin_unlock(&((__sk)->sk_lock.slock)) + +extern struct sock *sk_alloc(int family, int priority, + struct proto *prot, int zero_it); +extern void sk_free(struct sock *sk); + +extern struct sk_buff *sock_wmalloc(struct sock *sk, + unsigned long size, int force, + int priority); +extern struct sk_buff *sock_rmalloc(struct sock *sk, + unsigned long size, int force, + int priority); +extern void sock_wfree(struct sk_buff *skb); +extern void sock_rfree(struct sk_buff *skb); + +extern int sock_setsockopt(struct socket *sock, int level, + int op, char __user *optval, + int optlen); + +extern int sock_getsockopt(struct socket *sock, int level, + int op, char __user *optval, + int __user *optlen); +extern struct sk_buff *sock_alloc_send_skb(struct sock *sk, + unsigned long size, + int noblock, + int *errcode); +extern void *sock_kmalloc(struct sock *sk, int size, int priority); +extern void sock_kfree_s(struct sock *sk, void *mem, int size); +extern void sk_send_sigurg(struct sock *sk); + +/* + * Functions to fill in entries in struct proto_ops when a protocol + * does not implement a particular function. + */ +extern int sock_no_bind(struct socket *, + struct sockaddr *, int); +extern int sock_no_connect(struct socket *, + struct sockaddr *, int, int); +extern int sock_no_socketpair(struct socket *, + struct socket *); +extern int sock_no_accept(struct socket *, + struct socket *, int); +extern int sock_no_getname(struct socket *, + struct sockaddr *, int *, int); +extern unsigned int sock_no_poll(struct file *, struct socket *, + struct poll_table_struct *); +extern int sock_no_ioctl(struct socket *, unsigned int, + unsigned long); +extern int sock_no_listen(struct socket *, int); +extern int sock_no_shutdown(struct socket *, int); +extern int sock_no_getsockopt(struct socket *, int , int, + char __user *, int __user *); +extern int sock_no_setsockopt(struct socket *, int, int, + char __user *, int); +extern int sock_no_sendmsg(struct kiocb *, struct socket *, + struct msghdr *, size_t); +extern int sock_no_recvmsg(struct kiocb *, struct socket *, + struct msghdr *, size_t, int); +extern int sock_no_mmap(struct file *file, + struct socket *sock, + struct vm_area_struct *vma); +extern ssize_t sock_no_sendpage(struct socket *sock, + struct page *page, + int offset, size_t size, + int flags); + +/* + * Functions to fill in entries in struct proto_ops when a protocol + * uses the inet style. + */ +extern int sock_common_getsockopt(struct socket *sock, int level, int optname, + char __user *optval, int __user *optlen); +extern int sock_common_recvmsg(struct kiocb *iocb, struct socket *sock, + struct msghdr *msg, size_t size, int flags); +extern int sock_common_setsockopt(struct socket *sock, int level, int optname, + char __user *optval, int optlen); + +extern void sk_common_release(struct sock *sk); + +/* + * Default socket callbacks and setup code + */ + +/* Initialise core socket variables */ +extern void sock_init_data(struct socket *sock, struct sock *sk); + +/** + * sk_filter - run a packet through a socket filter + * @sk: sock associated with &sk_buff + * @skb: buffer to filter + * @needlock: set to 1 if the sock is not locked by caller. + * + * Run the filter code and then cut skb->data to correct size returned by + * sk_run_filter. If pkt_len is 0 we toss packet. If skb->len is smaller + * than pkt_len we keep whole skb->data. This is the socket level + * wrapper to sk_run_filter. It returns 0 if the packet should + * be accepted or -EPERM if the packet should be tossed. + * + */ + +static inline int sk_filter(struct sock *sk, struct sk_buff *skb, int needlock) +{ + int err; + + err = security_sock_rcv_skb(sk, skb); + if (err) + return err; + + if (sk->sk_filter) { + struct sk_filter *filter; + + if (needlock) + bh_lock_sock(sk); + + filter = sk->sk_filter; + if (filter) { + int pkt_len = sk_run_filter(skb, filter->insns, + filter->len); + if (!pkt_len) + err = -EPERM; + else + skb_trim(skb, pkt_len); + } + + if (needlock) + bh_unlock_sock(sk); + } + return err; +} + +/** + * sk_filter_release: Release a socket filter + * @sk: socket + * @fp: filter to remove + * + * Remove a filter from a socket and release its resources. + */ + +static inline void sk_filter_release(struct sock *sk, struct sk_filter *fp) +{ + unsigned int size = sk_filter_len(fp); + + atomic_sub(size, &sk->sk_omem_alloc); + + if (atomic_dec_and_test(&fp->refcnt)) + kfree(fp); +} + +static inline void sk_filter_charge(struct sock *sk, struct sk_filter *fp) +{ + atomic_inc(&fp->refcnt); + atomic_add(sk_filter_len(fp), &sk->sk_omem_alloc); +} + +/* + * Socket reference counting postulates. + * + * * Each user of socket SHOULD hold a reference count. + * * Each access point to socket (an hash table bucket, reference from a list, + * running timer, skb in flight MUST hold a reference count. + * * When reference count hits 0, it means it will never increase back. + * * When reference count hits 0, it means that no references from + * outside exist to this socket and current process on current CPU + * is last user and may/should destroy this socket. + * * sk_free is called from any context: process, BH, IRQ. When + * it is called, socket has no references from outside -> sk_free + * may release descendant resources allocated by the socket, but + * to the time when it is called, socket is NOT referenced by any + * hash tables, lists etc. + * * Packets, delivered from outside (from network or from another process) + * and enqueued on receive/error queues SHOULD NOT grab reference count, + * when they sit in queue. Otherwise, packets will leak to hole, when + * socket is looked up by one cpu and unhasing is made by another CPU. + * It is true for udp/raw, netlink (leak to receive and error queues), tcp + * (leak to backlog). Packet socket does all the processing inside + * BR_NETPROTO_LOCK, so that it has not this race condition. UNIX sockets + * use separate SMP lock, so that they are prone too. + */ + +/* Ungrab socket and destroy it, if it was the last reference. */ +static inline void sock_put(struct sock *sk) +{ + if (atomic_dec_and_test(&sk->sk_refcnt)) + sk_free(sk); +} + +/* Detach socket from process context. + * Announce socket dead, detach it from wait queue and inode. + * Note that parent inode held reference count on this struct sock, + * we do not release it in this function, because protocol + * probably wants some additional cleanups or even continuing + * to work with this socket (TCP). + */ +static inline void sock_orphan(struct sock *sk) +{ + write_lock_bh(&sk->sk_callback_lock); + sock_set_flag(sk, SOCK_DEAD); + sk->sk_socket = NULL; + sk->sk_sleep = NULL; + write_unlock_bh(&sk->sk_callback_lock); +} + +static inline void sock_graft(struct sock *sk, struct socket *parent) +{ + write_lock_bh(&sk->sk_callback_lock); + sk->sk_sleep = &parent->wait; + parent->sk = sk; + sk->sk_socket = parent; + write_unlock_bh(&sk->sk_callback_lock); +} + +extern int sock_i_uid(struct sock *sk); +extern unsigned long sock_i_ino(struct sock *sk); + +static inline struct dst_entry * +__sk_dst_get(struct sock *sk) +{ + return sk->sk_dst_cache; +} + +static inline struct dst_entry * +sk_dst_get(struct sock *sk) +{ + struct dst_entry *dst; + + read_lock(&sk->sk_dst_lock); + dst = sk->sk_dst_cache; + if (dst) + dst_hold(dst); + read_unlock(&sk->sk_dst_lock); + return dst; +} + +static inline void +__sk_dst_set(struct sock *sk, struct dst_entry *dst) +{ + struct dst_entry *old_dst; + + old_dst = sk->sk_dst_cache; + sk->sk_dst_cache = dst; + dst_release(old_dst); +} + +static inline void +sk_dst_set(struct sock *sk, struct dst_entry *dst) +{ + write_lock(&sk->sk_dst_lock); + __sk_dst_set(sk, dst); + write_unlock(&sk->sk_dst_lock); +} + +static inline void +__sk_dst_reset(struct sock *sk) +{ + struct dst_entry *old_dst; + + old_dst = sk->sk_dst_cache; + sk->sk_dst_cache = NULL; + dst_release(old_dst); +} + +static inline void +sk_dst_reset(struct sock *sk) +{ + write_lock(&sk->sk_dst_lock); + __sk_dst_reset(sk); + write_unlock(&sk->sk_dst_lock); +} + +static inline struct dst_entry * +__sk_dst_check(struct sock *sk, u32 cookie) +{ + struct dst_entry *dst = sk->sk_dst_cache; + + if (dst && dst->obsolete && dst->ops->check(dst, cookie) == NULL) { + sk->sk_dst_cache = NULL; + dst_release(dst); + return NULL; + } + + return dst; +} + +static inline struct dst_entry * +sk_dst_check(struct sock *sk, u32 cookie) +{ + struct dst_entry *dst = sk_dst_get(sk); + + if (dst && dst->obsolete && dst->ops->check(dst, cookie) == NULL) { + sk_dst_reset(sk); + dst_release(dst); + return NULL; + } + + return dst; +} + +static inline void sk_charge_skb(struct sock *sk, struct sk_buff *skb) +{ + sk->sk_wmem_queued += skb->truesize; + sk->sk_forward_alloc -= skb->truesize; +} + +static inline int skb_copy_to_page(struct sock *sk, char __user *from, + struct sk_buff *skb, struct page *page, + int off, int copy) +{ + if (skb->ip_summed == CHECKSUM_NONE) { + int err = 0; + unsigned int csum = csum_and_copy_from_user(from, + page_address(page) + off, + copy, 0, &err); + if (err) + return err; + skb->csum = csum_block_add(skb->csum, csum, skb->len); + } else if (copy_from_user(page_address(page) + off, from, copy)) + return -EFAULT; + + skb->len += copy; + skb->data_len += copy; + skb->truesize += copy; + sk->sk_wmem_queued += copy; + sk->sk_forward_alloc -= copy; + return 0; +} + +/* + * Queue a received datagram if it will fit. Stream and sequenced + * protocols can't normally use this as they need to fit buffers in + * and play with them. + * + * Inlined as it's very short and called for pretty much every + * packet ever received. + */ + +static inline void skb_set_owner_w(struct sk_buff *skb, struct sock *sk) +{ + sock_hold(sk); + skb->sk = sk; + skb->destructor = sock_wfree; + atomic_add(skb->truesize, &sk->sk_wmem_alloc); +} + +static inline void skb_set_owner_r(struct sk_buff *skb, struct sock *sk) +{ + skb->sk = sk; + skb->destructor = sock_rfree; + atomic_add(skb->truesize, &sk->sk_rmem_alloc); +} + +extern void sk_reset_timer(struct sock *sk, struct timer_list* timer, + unsigned long expires); + +extern void sk_stop_timer(struct sock *sk, struct timer_list* timer); + +static inline int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) +{ + int err = 0; + int skb_len; + + /* Cast skb->rcvbuf to unsigned... It's pointless, but reduces + number of warnings when compiling with -W --ANK + */ + if (atomic_read(&sk->sk_rmem_alloc) + skb->truesize >= + (unsigned)sk->sk_rcvbuf) { + err = -ENOMEM; + goto out; + } + + /* It would be deadlock, if sock_queue_rcv_skb is used + with socket lock! We assume that users of this + function are lock free. + */ + err = sk_filter(sk, skb, 1); + if (err) + goto out; + + skb->dev = NULL; + skb_set_owner_r(skb, sk); + + /* Cache the SKB length before we tack it onto the receive + * queue. Once it is added it no longer belongs to us and + * may be freed by other threads of control pulling packets + * from the queue. + */ + skb_len = skb->len; + + skb_queue_tail(&sk->sk_receive_queue, skb); + + if (!sock_flag(sk, SOCK_DEAD)) + sk->sk_data_ready(sk, skb_len); +out: + return err; +} + +static inline int sock_queue_err_skb(struct sock *sk, struct sk_buff *skb) +{ + /* Cast skb->rcvbuf to unsigned... It's pointless, but reduces + number of warnings when compiling with -W --ANK + */ + if (atomic_read(&sk->sk_rmem_alloc) + skb->truesize >= + (unsigned)sk->sk_rcvbuf) + return -ENOMEM; + skb_set_owner_r(skb, sk); + skb_queue_tail(&sk->sk_error_queue, skb); + if (!sock_flag(sk, SOCK_DEAD)) + sk->sk_data_ready(sk, skb->len); + return 0; +} + +/* + * Recover an error report and clear atomically + */ + +static inline int sock_error(struct sock *sk) +{ + int err = xchg(&sk->sk_err, 0); + return -err; +} + +static inline unsigned long sock_wspace(struct sock *sk) +{ + int amt = 0; + + if (!(sk->sk_shutdown & SEND_SHUTDOWN)) { + amt = sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc); + if (amt < 0) + amt = 0; + } + return amt; +} + +static inline void sk_wake_async(struct sock *sk, int how, int band) +{ + if (sk->sk_socket && sk->sk_socket->fasync_list) + sock_wake_async(sk->sk_socket, how, band); +} + +#define SOCK_MIN_SNDBUF 2048 +#define SOCK_MIN_RCVBUF 256 + +static inline void sk_stream_moderate_sndbuf(struct sock *sk) +{ + if (!(sk->sk_userlocks & SOCK_SNDBUF_LOCK)) { + sk->sk_sndbuf = min(sk->sk_sndbuf, sk->sk_wmem_queued / 2); + sk->sk_sndbuf = max(sk->sk_sndbuf, SOCK_MIN_SNDBUF); + } +} + +static inline struct sk_buff *sk_stream_alloc_pskb(struct sock *sk, + int size, int mem, int gfp) +{ + struct sk_buff *skb = alloc_skb(size + sk->sk_prot->max_header, gfp); + + if (skb) { + skb->truesize += mem; + if (sk->sk_forward_alloc >= (int)skb->truesize || + sk_stream_mem_schedule(sk, skb->truesize, 0)) { + skb_reserve(skb, sk->sk_prot->max_header); + return skb; + } + __kfree_skb(skb); + } else { + sk->sk_prot->enter_memory_pressure(); + sk_stream_moderate_sndbuf(sk); + } + return NULL; +} + +static inline struct sk_buff *sk_stream_alloc_skb(struct sock *sk, + int size, int gfp) +{ + return sk_stream_alloc_pskb(sk, size, 0, gfp); +} + +static inline struct page *sk_stream_alloc_page(struct sock *sk) +{ + struct page *page = NULL; + + if (sk->sk_forward_alloc >= (int)PAGE_SIZE || + sk_stream_mem_schedule(sk, PAGE_SIZE, 0)) + page = alloc_pages(sk->sk_allocation, 0); + else { + sk->sk_prot->enter_memory_pressure(); + sk_stream_moderate_sndbuf(sk); + } + return page; +} + +#define sk_stream_for_retrans_queue(skb, sk) \ + for (skb = (sk)->sk_write_queue.next; \ + (skb != (sk)->sk_send_head) && \ + (skb != (struct sk_buff *)&(sk)->sk_write_queue); \ + skb = skb->next) + +/* + * Default write policy as shown to user space via poll/select/SIGIO + */ +static inline int sock_writeable(const struct sock *sk) +{ + return atomic_read(&sk->sk_wmem_alloc) < (sk->sk_sndbuf / 2); +} + +static inline int gfp_any(void) +{ + return in_softirq() ? GFP_ATOMIC : GFP_KERNEL; +} + +static inline long sock_rcvtimeo(const struct sock *sk, int noblock) +{ + return noblock ? 0 : sk->sk_rcvtimeo; +} + +static inline long sock_sndtimeo(const struct sock *sk, int noblock) +{ + return noblock ? 0 : sk->sk_sndtimeo; +} + +static inline int sock_rcvlowat(const struct sock *sk, int waitall, int len) +{ + return (waitall ? len : min_t(int, sk->sk_rcvlowat, len)) ? : 1; +} + +/* Alas, with timeout socket operations are not restartable. + * Compare this to poll(). + */ +static inline int sock_intr_errno(long timeo) +{ + return timeo == MAX_SCHEDULE_TIMEOUT ? -ERESTARTSYS : -EINTR; +} + +static __inline__ void +sock_recv_timestamp(struct msghdr *msg, struct sock *sk, struct sk_buff *skb) +{ + struct timeval *stamp = &skb->stamp; + if (sock_flag(sk, SOCK_RCVTSTAMP)) { + /* Race occurred between timestamp enabling and packet + receiving. Fill in the current time for now. */ + if (stamp->tv_sec == 0) + do_gettimeofday(stamp); + put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMP, sizeof(struct timeval), + stamp); + } else + sk->sk_stamp = *stamp; +} + +/** + * sk_eat_skb - Release a skb if it is no longer needed + * @sk - socket to eat this skb from + * @skb - socket buffer to eat + * + * This routine must be called with interrupts disabled or with the socket + * locked so that the sk_buff queue operation is ok. +*/ +static inline void sk_eat_skb(struct sock *sk, struct sk_buff *skb) +{ + __skb_unlink(skb, &sk->sk_receive_queue); + __kfree_skb(skb); +} + +extern void sock_enable_timestamp(struct sock *sk); +extern int sock_get_timestamp(struct sock *, struct timeval __user *); + +/* + * Enable debug/info messages + */ + +#if 0 +#define NETDEBUG(x) do { } while (0) +#define LIMIT_NETDEBUG(x) do {} while(0) +#else +#define NETDEBUG(x) do { x; } while (0) +#define LIMIT_NETDEBUG(x) do { if (net_ratelimit()) { x; } } while(0) +#endif + +/* + * Macros for sleeping on a socket. Use them like this: + * + * SOCK_SLEEP_PRE(sk) + * if (condition) + * schedule(); + * SOCK_SLEEP_POST(sk) + * + * N.B. These are now obsolete and were, afaik, only ever used in DECnet + * and when the last use of them in DECnet has gone, I'm intending to + * remove them. + */ + +#define SOCK_SLEEP_PRE(sk) { struct task_struct *tsk = current; \ + DECLARE_WAITQUEUE(wait, tsk); \ + tsk->state = TASK_INTERRUPTIBLE; \ + add_wait_queue((sk)->sk_sleep, &wait); \ + release_sock(sk); + +#define SOCK_SLEEP_POST(sk) tsk->state = TASK_RUNNING; \ + remove_wait_queue((sk)->sk_sleep, &wait); \ + lock_sock(sk); \ + } + +static inline void sock_valbool_flag(struct sock *sk, int bit, int valbool) +{ + if (valbool) + sock_set_flag(sk, bit); + else + sock_reset_flag(sk, bit); +} + +extern __u32 sysctl_wmem_max; +extern __u32 sysctl_rmem_max; + +#ifdef CONFIG_NET +int siocdevprivate_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg); +#else +static inline int siocdevprivate_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg) +{ + return -ENODEV; +} +#endif + +#endif /* _SOCK_H */ diff --git a/include/net/syncppp.h b/include/net/syncppp.h new file mode 100644 index 000000000000..614cb6ba564e --- /dev/null +++ b/include/net/syncppp.h @@ -0,0 +1,105 @@ +/* + * Defines for synchronous PPP/Cisco link level subroutines. + * + * Copyright (C) 1994 Cronyx Ltd. + * Author: Serge Vakulenko, <vak@zebub.msk.su> + * + * This software is distributed with NO WARRANTIES, not even the implied + * warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * + * Authors grant any other persons or organizations permission to use + * or modify this software as long as this message is kept with the software, + * all derivative works or modified versions. + * + * Version 1.7, Wed Jun 7 22:12:02 MSD 1995 + * + * + * + */ + +#ifndef _SYNCPPP_H_ +#define _SYNCPPP_H_ 1 + +#ifdef __KERNEL__ +struct slcp { + u16 state; /* state machine */ + u32 magic; /* local magic number */ + u_char echoid; /* id of last keepalive echo request */ + u_char confid; /* id of last configuration request */ +}; + +struct sipcp { + u16 state; /* state machine */ + u_char confid; /* id of last configuration request */ +}; + +struct sppp +{ + struct sppp * pp_next; /* next interface in keepalive list */ + u32 pp_flags; /* use Cisco protocol instead of PPP */ + u16 pp_alivecnt; /* keepalive packets counter */ + u16 pp_loopcnt; /* loopback detection counter */ + u32 pp_seq; /* local sequence number */ + u32 pp_rseq; /* remote sequence number */ + struct slcp lcp; /* LCP params */ + struct sipcp ipcp; /* IPCP params */ + u32 ibytes,obytes; /* Bytes in/out */ + u32 ipkts,opkts; /* Packets in/out */ + struct timer_list pp_timer; + struct net_device *pp_if; + char pp_link_state; /* Link status */ + spinlock_t lock; +}; + +struct ppp_device +{ + struct net_device *dev; /* Network device pointer */ + struct sppp sppp; /* Synchronous PPP */ +}; + +static inline struct sppp *sppp_of(struct net_device *dev) +{ + struct ppp_device **ppp = dev->priv; + BUG_ON((*ppp)->dev != dev); + return &(*ppp)->sppp; +} + +#define PP_KEEPALIVE 0x01 /* use keepalive protocol */ +#define PP_CISCO 0x02 /* use Cisco protocol instead of PPP */ +#define PP_TIMO 0x04 /* cp_timeout routine active */ +#define PP_DEBUG 0x08 + +#define PPP_MTU 1500 /* max. transmit unit */ + +#define LCP_STATE_CLOSED 0 /* LCP state: closed (conf-req sent) */ +#define LCP_STATE_ACK_RCVD 1 /* LCP state: conf-ack received */ +#define LCP_STATE_ACK_SENT 2 /* LCP state: conf-ack sent */ +#define LCP_STATE_OPENED 3 /* LCP state: opened */ + +#define IPCP_STATE_CLOSED 0 /* IPCP state: closed (conf-req sent) */ +#define IPCP_STATE_ACK_RCVD 1 /* IPCP state: conf-ack received */ +#define IPCP_STATE_ACK_SENT 2 /* IPCP state: conf-ack sent */ +#define IPCP_STATE_OPENED 3 /* IPCP state: opened */ + +#define SPPP_LINK_DOWN 0 /* link down - no keepalive */ +#define SPPP_LINK_UP 1 /* link is up - keepalive ok */ + +void sppp_attach (struct ppp_device *pd); +void sppp_detach (struct net_device *dev); +void sppp_input (struct net_device *dev, struct sk_buff *m); +int sppp_do_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd); +struct sk_buff *sppp_dequeue (struct net_device *dev); +int sppp_isempty (struct net_device *dev); +void sppp_flush (struct net_device *dev); +int sppp_open (struct net_device *dev); +int sppp_reopen (struct net_device *dev); +int sppp_close (struct net_device *dev); +#endif + +#define SPPPIOCCISCO (SIOCDEVPRIVATE) +#define SPPPIOCPPP (SIOCDEVPRIVATE+1) +#define SPPPIOCDEBUG (SIOCDEVPRIVATE+2) +#define SPPPIOCSFLAGS (SIOCDEVPRIVATE+3) +#define SPPPIOCGFLAGS (SIOCDEVPRIVATE+4) + +#endif /* _SYNCPPP_H_ */ diff --git a/include/net/tc_act/tc_gact.h b/include/net/tc_act/tc_gact.h new file mode 100644 index 000000000000..59f0d9628ad1 --- /dev/null +++ b/include/net/tc_act/tc_gact.h @@ -0,0 +1,17 @@ +#ifndef __NET_TC_GACT_H +#define __NET_TC_GACT_H + +#include <net/act_api.h> + +struct tcf_gact +{ + tca_gen(gact); +#ifdef CONFIG_GACT_PROB + u16 ptype; + u16 pval; + int paction; +#endif + +}; + +#endif diff --git a/include/net/tc_act/tc_ipt.h b/include/net/tc_act/tc_ipt.h new file mode 100644 index 000000000000..02eccebd55ae --- /dev/null +++ b/include/net/tc_act/tc_ipt.h @@ -0,0 +1,16 @@ +#ifndef __NET_TC_IPT_H +#define __NET_TC_IPT_H + +#include <net/act_api.h> + +struct ipt_entry_target; + +struct tcf_ipt +{ + tca_gen(ipt); + u32 hook; + char *tname; + struct ipt_entry_target *t; +}; + +#endif diff --git a/include/net/tc_act/tc_mirred.h b/include/net/tc_act/tc_mirred.h new file mode 100644 index 000000000000..b5c32f65c12c --- /dev/null +++ b/include/net/tc_act/tc_mirred.h @@ -0,0 +1,15 @@ +#ifndef __NET_TC_MIR_H +#define __NET_TC_MIR_H + +#include <net/act_api.h> + +struct tcf_mirred +{ + tca_gen(mirred); + int eaction; + int ifindex; + int ok_push; + struct net_device *dev; +}; + +#endif diff --git a/include/net/tc_act/tc_pedit.h b/include/net/tc_act/tc_pedit.h new file mode 100644 index 000000000000..eb21689d759d --- /dev/null +++ b/include/net/tc_act/tc_pedit.h @@ -0,0 +1,14 @@ +#ifndef __NET_TC_PED_H +#define __NET_TC_PED_H + +#include <net/act_api.h> + +struct tcf_pedit +{ + tca_gen(pedit); + unsigned char nkeys; + unsigned char flags; + struct tc_pedit_key *keys; +}; + +#endif diff --git a/include/net/tcp.h b/include/net/tcp.h new file mode 100644 index 000000000000..503810a70e21 --- /dev/null +++ b/include/net/tcp.h @@ -0,0 +1,2022 @@ +/* + * INET An implementation of the TCP/IP protocol suite for the LINUX + * operating system. INET is implemented using the BSD Socket + * interface as the means of communication with the user level. + * + * Definitions for the TCP module. + * + * Version: @(#)tcp.h 1.0.5 05/23/93 + * + * Authors: Ross Biro, <bir7@leland.Stanford.Edu> + * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#ifndef _TCP_H +#define _TCP_H + +#define TCP_DEBUG 1 +#define FASTRETRANS_DEBUG 1 + +/* Cancel timers, when they are not required. */ +#undef TCP_CLEAR_TIMERS + +#include <linux/config.h> +#include <linux/list.h> +#include <linux/tcp.h> +#include <linux/slab.h> +#include <linux/cache.h> +#include <linux/percpu.h> +#include <net/checksum.h> +#include <net/sock.h> +#include <net/snmp.h> +#include <net/ip.h> +#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) +#include <linux/ipv6.h> +#endif +#include <linux/seq_file.h> + +/* This is for all connections with a full identity, no wildcards. + * New scheme, half the table is for TIME_WAIT, the other half is + * for the rest. I'll experiment with dynamic table growth later. + */ +struct tcp_ehash_bucket { + rwlock_t lock; + struct hlist_head chain; +} __attribute__((__aligned__(8))); + +/* This is for listening sockets, thus all sockets which possess wildcards. */ +#define TCP_LHTABLE_SIZE 32 /* Yes, really, this is all you need. */ + +/* There are a few simple rules, which allow for local port reuse by + * an application. In essence: + * + * 1) Sockets bound to different interfaces may share a local port. + * Failing that, goto test 2. + * 2) If all sockets have sk->sk_reuse set, and none of them are in + * TCP_LISTEN state, the port may be shared. + * Failing that, goto test 3. + * 3) If all sockets are bound to a specific inet_sk(sk)->rcv_saddr local + * address, and none of them are the same, the port may be + * shared. + * Failing this, the port cannot be shared. + * + * The interesting point, is test #2. This is what an FTP server does + * all day. To optimize this case we use a specific flag bit defined + * below. As we add sockets to a bind bucket list, we perform a + * check of: (newsk->sk_reuse && (newsk->sk_state != TCP_LISTEN)) + * As long as all sockets added to a bind bucket pass this test, + * the flag bit will be set. + * The resulting situation is that tcp_v[46]_verify_bind() can just check + * for this flag bit, if it is set and the socket trying to bind has + * sk->sk_reuse set, we don't even have to walk the owners list at all, + * we return that it is ok to bind this socket to the requested local port. + * + * Sounds like a lot of work, but it is worth it. In a more naive + * implementation (ie. current FreeBSD etc.) the entire list of ports + * must be walked for each data port opened by an ftp server. Needless + * to say, this does not scale at all. With a couple thousand FTP + * users logged onto your box, isn't it nice to know that new data + * ports are created in O(1) time? I thought so. ;-) -DaveM + */ +struct tcp_bind_bucket { + unsigned short port; + signed short fastreuse; + struct hlist_node node; + struct hlist_head owners; +}; + +#define tb_for_each(tb, node, head) hlist_for_each_entry(tb, node, head, node) + +struct tcp_bind_hashbucket { + spinlock_t lock; + struct hlist_head chain; +}; + +static inline struct tcp_bind_bucket *__tb_head(struct tcp_bind_hashbucket *head) +{ + return hlist_entry(head->chain.first, struct tcp_bind_bucket, node); +} + +static inline struct tcp_bind_bucket *tb_head(struct tcp_bind_hashbucket *head) +{ + return hlist_empty(&head->chain) ? NULL : __tb_head(head); +} + +extern struct tcp_hashinfo { + /* This is for sockets with full identity only. Sockets here will + * always be without wildcards and will have the following invariant: + * + * TCP_ESTABLISHED <= sk->sk_state < TCP_CLOSE + * + * First half of the table is for sockets not in TIME_WAIT, second half + * is for TIME_WAIT sockets only. + */ + struct tcp_ehash_bucket *__tcp_ehash; + + /* Ok, let's try this, I give up, we do need a local binding + * TCP hash as well as the others for fast bind/connect. + */ + struct tcp_bind_hashbucket *__tcp_bhash; + + int __tcp_bhash_size; + int __tcp_ehash_size; + + /* All sockets in TCP_LISTEN state will be in here. This is the only + * table where wildcard'd TCP sockets can exist. Hash function here + * is just local port number. + */ + struct hlist_head __tcp_listening_hash[TCP_LHTABLE_SIZE]; + + /* All the above members are written once at bootup and + * never written again _or_ are predominantly read-access. + * + * Now align to a new cache line as all the following members + * are often dirty. + */ + rwlock_t __tcp_lhash_lock ____cacheline_aligned; + atomic_t __tcp_lhash_users; + wait_queue_head_t __tcp_lhash_wait; + spinlock_t __tcp_portalloc_lock; +} tcp_hashinfo; + +#define tcp_ehash (tcp_hashinfo.__tcp_ehash) +#define tcp_bhash (tcp_hashinfo.__tcp_bhash) +#define tcp_ehash_size (tcp_hashinfo.__tcp_ehash_size) +#define tcp_bhash_size (tcp_hashinfo.__tcp_bhash_size) +#define tcp_listening_hash (tcp_hashinfo.__tcp_listening_hash) +#define tcp_lhash_lock (tcp_hashinfo.__tcp_lhash_lock) +#define tcp_lhash_users (tcp_hashinfo.__tcp_lhash_users) +#define tcp_lhash_wait (tcp_hashinfo.__tcp_lhash_wait) +#define tcp_portalloc_lock (tcp_hashinfo.__tcp_portalloc_lock) + +extern kmem_cache_t *tcp_bucket_cachep; +extern struct tcp_bind_bucket *tcp_bucket_create(struct tcp_bind_hashbucket *head, + unsigned short snum); +extern void tcp_bucket_destroy(struct tcp_bind_bucket *tb); +extern void tcp_bucket_unlock(struct sock *sk); +extern int tcp_port_rover; + +/* These are AF independent. */ +static __inline__ int tcp_bhashfn(__u16 lport) +{ + return (lport & (tcp_bhash_size - 1)); +} + +extern void tcp_bind_hash(struct sock *sk, struct tcp_bind_bucket *tb, + unsigned short snum); + +#if (BITS_PER_LONG == 64) +#define TCP_ADDRCMP_ALIGN_BYTES 8 +#else +#define TCP_ADDRCMP_ALIGN_BYTES 4 +#endif + +/* This is a TIME_WAIT bucket. It works around the memory consumption + * problems of sockets in such a state on heavily loaded servers, but + * without violating the protocol specification. + */ +struct tcp_tw_bucket { + /* + * Now struct sock also uses sock_common, so please just + * don't add nothing before this first member (__tw_common) --acme + */ + struct sock_common __tw_common; +#define tw_family __tw_common.skc_family +#define tw_state __tw_common.skc_state +#define tw_reuse __tw_common.skc_reuse +#define tw_bound_dev_if __tw_common.skc_bound_dev_if +#define tw_node __tw_common.skc_node +#define tw_bind_node __tw_common.skc_bind_node +#define tw_refcnt __tw_common.skc_refcnt + volatile unsigned char tw_substate; + unsigned char tw_rcv_wscale; + __u16 tw_sport; + /* Socket demultiplex comparisons on incoming packets. */ + /* these five are in inet_sock */ + __u32 tw_daddr + __attribute__((aligned(TCP_ADDRCMP_ALIGN_BYTES))); + __u32 tw_rcv_saddr; + __u16 tw_dport; + __u16 tw_num; + /* And these are ours. */ + int tw_hashent; + int tw_timeout; + __u32 tw_rcv_nxt; + __u32 tw_snd_nxt; + __u32 tw_rcv_wnd; + __u32 tw_ts_recent; + long tw_ts_recent_stamp; + unsigned long tw_ttd; + struct tcp_bind_bucket *tw_tb; + struct hlist_node tw_death_node; +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) + struct in6_addr tw_v6_daddr; + struct in6_addr tw_v6_rcv_saddr; + int tw_v6_ipv6only; +#endif +}; + +static __inline__ void tw_add_node(struct tcp_tw_bucket *tw, + struct hlist_head *list) +{ + hlist_add_head(&tw->tw_node, list); +} + +static __inline__ void tw_add_bind_node(struct tcp_tw_bucket *tw, + struct hlist_head *list) +{ + hlist_add_head(&tw->tw_bind_node, list); +} + +static inline int tw_dead_hashed(struct tcp_tw_bucket *tw) +{ + return tw->tw_death_node.pprev != NULL; +} + +static __inline__ void tw_dead_node_init(struct tcp_tw_bucket *tw) +{ + tw->tw_death_node.pprev = NULL; +} + +static __inline__ void __tw_del_dead_node(struct tcp_tw_bucket *tw) +{ + __hlist_del(&tw->tw_death_node); + tw_dead_node_init(tw); +} + +static __inline__ int tw_del_dead_node(struct tcp_tw_bucket *tw) +{ + if (tw_dead_hashed(tw)) { + __tw_del_dead_node(tw); + return 1; + } + return 0; +} + +#define tw_for_each(tw, node, head) \ + hlist_for_each_entry(tw, node, head, tw_node) + +#define tw_for_each_inmate(tw, node, jail) \ + hlist_for_each_entry(tw, node, jail, tw_death_node) + +#define tw_for_each_inmate_safe(tw, node, safe, jail) \ + hlist_for_each_entry_safe(tw, node, safe, jail, tw_death_node) + +#define tcptw_sk(__sk) ((struct tcp_tw_bucket *)(__sk)) + +static inline u32 tcp_v4_rcv_saddr(const struct sock *sk) +{ + return likely(sk->sk_state != TCP_TIME_WAIT) ? + inet_sk(sk)->rcv_saddr : tcptw_sk(sk)->tw_rcv_saddr; +} + +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) +static inline struct in6_addr *__tcp_v6_rcv_saddr(const struct sock *sk) +{ + return likely(sk->sk_state != TCP_TIME_WAIT) ? + &inet6_sk(sk)->rcv_saddr : &tcptw_sk(sk)->tw_v6_rcv_saddr; +} + +static inline struct in6_addr *tcp_v6_rcv_saddr(const struct sock *sk) +{ + return sk->sk_family == AF_INET6 ? __tcp_v6_rcv_saddr(sk) : NULL; +} + +#define tcptw_sk_ipv6only(__sk) (tcptw_sk(__sk)->tw_v6_ipv6only) + +static inline int tcp_v6_ipv6only(const struct sock *sk) +{ + return likely(sk->sk_state != TCP_TIME_WAIT) ? + ipv6_only_sock(sk) : tcptw_sk_ipv6only(sk); +} +#else +# define __tcp_v6_rcv_saddr(__sk) NULL +# define tcp_v6_rcv_saddr(__sk) NULL +# define tcptw_sk_ipv6only(__sk) 0 +# define tcp_v6_ipv6only(__sk) 0 +#endif + +extern kmem_cache_t *tcp_timewait_cachep; + +static inline void tcp_tw_put(struct tcp_tw_bucket *tw) +{ + if (atomic_dec_and_test(&tw->tw_refcnt)) { +#ifdef INET_REFCNT_DEBUG + printk(KERN_DEBUG "tw_bucket %p released\n", tw); +#endif + kmem_cache_free(tcp_timewait_cachep, tw); + } +} + +extern atomic_t tcp_orphan_count; +extern int tcp_tw_count; +extern void tcp_time_wait(struct sock *sk, int state, int timeo); +extern void tcp_tw_deschedule(struct tcp_tw_bucket *tw); + + +/* Socket demux engine toys. */ +#ifdef __BIG_ENDIAN +#define TCP_COMBINED_PORTS(__sport, __dport) \ + (((__u32)(__sport)<<16) | (__u32)(__dport)) +#else /* __LITTLE_ENDIAN */ +#define TCP_COMBINED_PORTS(__sport, __dport) \ + (((__u32)(__dport)<<16) | (__u32)(__sport)) +#endif + +#if (BITS_PER_LONG == 64) +#ifdef __BIG_ENDIAN +#define TCP_V4_ADDR_COOKIE(__name, __saddr, __daddr) \ + __u64 __name = (((__u64)(__saddr))<<32)|((__u64)(__daddr)); +#else /* __LITTLE_ENDIAN */ +#define TCP_V4_ADDR_COOKIE(__name, __saddr, __daddr) \ + __u64 __name = (((__u64)(__daddr))<<32)|((__u64)(__saddr)); +#endif /* __BIG_ENDIAN */ +#define TCP_IPV4_MATCH(__sk, __cookie, __saddr, __daddr, __ports, __dif)\ + (((*((__u64 *)&(inet_sk(__sk)->daddr)))== (__cookie)) && \ + ((*((__u32 *)&(inet_sk(__sk)->dport)))== (__ports)) && \ + (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif)))) +#define TCP_IPV4_TW_MATCH(__sk, __cookie, __saddr, __daddr, __ports, __dif)\ + (((*((__u64 *)&(tcptw_sk(__sk)->tw_daddr))) == (__cookie)) && \ + ((*((__u32 *)&(tcptw_sk(__sk)->tw_dport))) == (__ports)) && \ + (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif)))) +#else /* 32-bit arch */ +#define TCP_V4_ADDR_COOKIE(__name, __saddr, __daddr) +#define TCP_IPV4_MATCH(__sk, __cookie, __saddr, __daddr, __ports, __dif)\ + ((inet_sk(__sk)->daddr == (__saddr)) && \ + (inet_sk(__sk)->rcv_saddr == (__daddr)) && \ + ((*((__u32 *)&(inet_sk(__sk)->dport)))== (__ports)) && \ + (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif)))) +#define TCP_IPV4_TW_MATCH(__sk, __cookie, __saddr, __daddr, __ports, __dif)\ + ((tcptw_sk(__sk)->tw_daddr == (__saddr)) && \ + (tcptw_sk(__sk)->tw_rcv_saddr == (__daddr)) && \ + ((*((__u32 *)&(tcptw_sk(__sk)->tw_dport))) == (__ports)) && \ + (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif)))) +#endif /* 64-bit arch */ + +#define TCP_IPV6_MATCH(__sk, __saddr, __daddr, __ports, __dif) \ + (((*((__u32 *)&(inet_sk(__sk)->dport)))== (__ports)) && \ + ((__sk)->sk_family == AF_INET6) && \ + ipv6_addr_equal(&inet6_sk(__sk)->daddr, (__saddr)) && \ + ipv6_addr_equal(&inet6_sk(__sk)->rcv_saddr, (__daddr)) && \ + (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif)))) + +/* These can have wildcards, don't try too hard. */ +static __inline__ int tcp_lhashfn(unsigned short num) +{ + return num & (TCP_LHTABLE_SIZE - 1); +} + +static __inline__ int tcp_sk_listen_hashfn(struct sock *sk) +{ + return tcp_lhashfn(inet_sk(sk)->num); +} + +#define MAX_TCP_HEADER (128 + MAX_HEADER) + +/* + * Never offer a window over 32767 without using window scaling. Some + * poor stacks do signed 16bit maths! + */ +#define MAX_TCP_WINDOW 32767U + +/* Minimal accepted MSS. It is (60+60+8) - (20+20). */ +#define TCP_MIN_MSS 88U + +/* Minimal RCV_MSS. */ +#define TCP_MIN_RCVMSS 536U + +/* After receiving this amount of duplicate ACKs fast retransmit starts. */ +#define TCP_FASTRETRANS_THRESH 3 + +/* Maximal reordering. */ +#define TCP_MAX_REORDERING 127 + +/* Maximal number of ACKs sent quickly to accelerate slow-start. */ +#define TCP_MAX_QUICKACKS 16U + +/* urg_data states */ +#define TCP_URG_VALID 0x0100 +#define TCP_URG_NOTYET 0x0200 +#define TCP_URG_READ 0x0400 + +#define TCP_RETR1 3 /* + * This is how many retries it does before it + * tries to figure out if the gateway is + * down. Minimal RFC value is 3; it corresponds + * to ~3sec-8min depending on RTO. + */ + +#define TCP_RETR2 15 /* + * This should take at least + * 90 minutes to time out. + * RFC1122 says that the limit is 100 sec. + * 15 is ~13-30min depending on RTO. + */ + +#define TCP_SYN_RETRIES 5 /* number of times to retry active opening a + * connection: ~180sec is RFC minumum */ + +#define TCP_SYNACK_RETRIES 5 /* number of times to retry passive opening a + * connection: ~180sec is RFC minumum */ + + +#define TCP_ORPHAN_RETRIES 7 /* number of times to retry on an orphaned + * socket. 7 is ~50sec-16min. + */ + + +#define TCP_TIMEWAIT_LEN (60*HZ) /* how long to wait to destroy TIME-WAIT + * state, about 60 seconds */ +#define TCP_FIN_TIMEOUT TCP_TIMEWAIT_LEN + /* BSD style FIN_WAIT2 deadlock breaker. + * It used to be 3min, new value is 60sec, + * to combine FIN-WAIT-2 timeout with + * TIME-WAIT timer. + */ + +#define TCP_DELACK_MAX ((unsigned)(HZ/5)) /* maximal time to delay before sending an ACK */ +#if HZ >= 100 +#define TCP_DELACK_MIN ((unsigned)(HZ/25)) /* minimal time to delay before sending an ACK */ +#define TCP_ATO_MIN ((unsigned)(HZ/25)) +#else +#define TCP_DELACK_MIN 4U +#define TCP_ATO_MIN 4U +#endif +#define TCP_RTO_MAX ((unsigned)(120*HZ)) +#define TCP_RTO_MIN ((unsigned)(HZ/5)) +#define TCP_TIMEOUT_INIT ((unsigned)(3*HZ)) /* RFC 1122 initial RTO value */ + +#define TCP_RESOURCE_PROBE_INTERVAL ((unsigned)(HZ/2U)) /* Maximal interval between probes + * for local resources. + */ + +#define TCP_KEEPALIVE_TIME (120*60*HZ) /* two hours */ +#define TCP_KEEPALIVE_PROBES 9 /* Max of 9 keepalive probes */ +#define TCP_KEEPALIVE_INTVL (75*HZ) + +#define MAX_TCP_KEEPIDLE 32767 +#define MAX_TCP_KEEPINTVL 32767 +#define MAX_TCP_KEEPCNT 127 +#define MAX_TCP_SYNCNT 127 + +#define TCP_SYNQ_INTERVAL (HZ/5) /* Period of SYNACK timer */ +#define TCP_SYNQ_HSIZE 512 /* Size of SYNACK hash table */ + +#define TCP_PAWS_24DAYS (60 * 60 * 24 * 24) +#define TCP_PAWS_MSL 60 /* Per-host timestamps are invalidated + * after this time. It should be equal + * (or greater than) TCP_TIMEWAIT_LEN + * to provide reliability equal to one + * provided by timewait state. + */ +#define TCP_PAWS_WINDOW 1 /* Replay window for per-host + * timestamps. It must be less than + * minimal timewait lifetime. + */ + +#define TCP_TW_RECYCLE_SLOTS_LOG 5 +#define TCP_TW_RECYCLE_SLOTS (1<<TCP_TW_RECYCLE_SLOTS_LOG) + +/* If time > 4sec, it is "slow" path, no recycling is required, + so that we select tick to get range about 4 seconds. + */ + +#if HZ <= 16 || HZ > 4096 +# error Unsupported: HZ <= 16 or HZ > 4096 +#elif HZ <= 32 +# define TCP_TW_RECYCLE_TICK (5+2-TCP_TW_RECYCLE_SLOTS_LOG) +#elif HZ <= 64 +# define TCP_TW_RECYCLE_TICK (6+2-TCP_TW_RECYCLE_SLOTS_LOG) +#elif HZ <= 128 +# define TCP_TW_RECYCLE_TICK (7+2-TCP_TW_RECYCLE_SLOTS_LOG) +#elif HZ <= 256 +# define TCP_TW_RECYCLE_TICK (8+2-TCP_TW_RECYCLE_SLOTS_LOG) +#elif HZ <= 512 +# define TCP_TW_RECYCLE_TICK (9+2-TCP_TW_RECYCLE_SLOTS_LOG) +#elif HZ <= 1024 +# define TCP_TW_RECYCLE_TICK (10+2-TCP_TW_RECYCLE_SLOTS_LOG) +#elif HZ <= 2048 +# define TCP_TW_RECYCLE_TICK (11+2-TCP_TW_RECYCLE_SLOTS_LOG) +#else +# define TCP_TW_RECYCLE_TICK (12+2-TCP_TW_RECYCLE_SLOTS_LOG) +#endif + +#define BICTCP_BETA_SCALE 1024 /* Scale factor beta calculation + * max_cwnd = snd_cwnd * beta + */ +#define BICTCP_MAX_INCREMENT 32 /* + * Limit on the amount of + * increment allowed during + * binary search. + */ +#define BICTCP_FUNC_OF_MIN_INCR 11 /* + * log(B/Smin)/log(B/(B-1))+1, + * Smin:min increment + * B:log factor + */ +#define BICTCP_B 4 /* + * In binary search, + * go to point (max+min)/N + */ + +/* + * TCP option + */ + +#define TCPOPT_NOP 1 /* Padding */ +#define TCPOPT_EOL 0 /* End of options */ +#define TCPOPT_MSS 2 /* Segment size negotiating */ +#define TCPOPT_WINDOW 3 /* Window scaling */ +#define TCPOPT_SACK_PERM 4 /* SACK Permitted */ +#define TCPOPT_SACK 5 /* SACK Block */ +#define TCPOPT_TIMESTAMP 8 /* Better RTT estimations/PAWS */ + +/* + * TCP option lengths + */ + +#define TCPOLEN_MSS 4 +#define TCPOLEN_WINDOW 3 +#define TCPOLEN_SACK_PERM 2 +#define TCPOLEN_TIMESTAMP 10 + +/* But this is what stacks really send out. */ +#define TCPOLEN_TSTAMP_ALIGNED 12 +#define TCPOLEN_WSCALE_ALIGNED 4 +#define TCPOLEN_SACKPERM_ALIGNED 4 +#define TCPOLEN_SACK_BASE 2 +#define TCPOLEN_SACK_BASE_ALIGNED 4 +#define TCPOLEN_SACK_PERBLOCK 8 + +#define TCP_TIME_RETRANS 1 /* Retransmit timer */ +#define TCP_TIME_DACK 2 /* Delayed ack timer */ +#define TCP_TIME_PROBE0 3 /* Zero window probe timer */ +#define TCP_TIME_KEEPOPEN 4 /* Keepalive timer */ + +/* Flags in tp->nonagle */ +#define TCP_NAGLE_OFF 1 /* Nagle's algo is disabled */ +#define TCP_NAGLE_CORK 2 /* Socket is corked */ +#define TCP_NAGLE_PUSH 4 /* Cork is overriden for already queued data */ + +/* sysctl variables for tcp */ +extern int sysctl_max_syn_backlog; +extern int sysctl_tcp_timestamps; +extern int sysctl_tcp_window_scaling; +extern int sysctl_tcp_sack; +extern int sysctl_tcp_fin_timeout; +extern int sysctl_tcp_tw_recycle; +extern int sysctl_tcp_keepalive_time; +extern int sysctl_tcp_keepalive_probes; +extern int sysctl_tcp_keepalive_intvl; +extern int sysctl_tcp_syn_retries; +extern int sysctl_tcp_synack_retries; +extern int sysctl_tcp_retries1; +extern int sysctl_tcp_retries2; +extern int sysctl_tcp_orphan_retries; +extern int sysctl_tcp_syncookies; +extern int sysctl_tcp_retrans_collapse; +extern int sysctl_tcp_stdurg; +extern int sysctl_tcp_rfc1337; +extern int sysctl_tcp_abort_on_overflow; +extern int sysctl_tcp_max_orphans; +extern int sysctl_tcp_max_tw_buckets; +extern int sysctl_tcp_fack; +extern int sysctl_tcp_reordering; +extern int sysctl_tcp_ecn; +extern int sysctl_tcp_dsack; +extern int sysctl_tcp_mem[3]; +extern int sysctl_tcp_wmem[3]; +extern int sysctl_tcp_rmem[3]; +extern int sysctl_tcp_app_win; +extern int sysctl_tcp_adv_win_scale; +extern int sysctl_tcp_tw_reuse; +extern int sysctl_tcp_frto; +extern int sysctl_tcp_low_latency; +extern int sysctl_tcp_westwood; +extern int sysctl_tcp_vegas_cong_avoid; +extern int sysctl_tcp_vegas_alpha; +extern int sysctl_tcp_vegas_beta; +extern int sysctl_tcp_vegas_gamma; +extern int sysctl_tcp_nometrics_save; +extern int sysctl_tcp_bic; +extern int sysctl_tcp_bic_fast_convergence; +extern int sysctl_tcp_bic_low_window; +extern int sysctl_tcp_bic_beta; +extern int sysctl_tcp_moderate_rcvbuf; +extern int sysctl_tcp_tso_win_divisor; + +extern atomic_t tcp_memory_allocated; +extern atomic_t tcp_sockets_allocated; +extern int tcp_memory_pressure; + +struct open_request; + +struct or_calltable { + int family; + int (*rtx_syn_ack) (struct sock *sk, struct open_request *req, struct dst_entry*); + void (*send_ack) (struct sk_buff *skb, struct open_request *req); + void (*destructor) (struct open_request *req); + void (*send_reset) (struct sk_buff *skb); +}; + +struct tcp_v4_open_req { + __u32 loc_addr; + __u32 rmt_addr; + struct ip_options *opt; +}; + +#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) +struct tcp_v6_open_req { + struct in6_addr loc_addr; + struct in6_addr rmt_addr; + struct sk_buff *pktopts; + int iif; +}; +#endif + +/* this structure is too big */ +struct open_request { + struct open_request *dl_next; /* Must be first member! */ + __u32 rcv_isn; + __u32 snt_isn; + __u16 rmt_port; + __u16 mss; + __u8 retrans; + __u8 __pad; + __u16 snd_wscale : 4, + rcv_wscale : 4, + tstamp_ok : 1, + sack_ok : 1, + wscale_ok : 1, + ecn_ok : 1, + acked : 1; + /* The following two fields can be easily recomputed I think -AK */ + __u32 window_clamp; /* window clamp at creation time */ + __u32 rcv_wnd; /* rcv_wnd offered first time */ + __u32 ts_recent; + unsigned long expires; + struct or_calltable *class; + struct sock *sk; + union { + struct tcp_v4_open_req v4_req; +#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) + struct tcp_v6_open_req v6_req; +#endif + } af; +}; + +/* SLAB cache for open requests. */ +extern kmem_cache_t *tcp_openreq_cachep; + +#define tcp_openreq_alloc() kmem_cache_alloc(tcp_openreq_cachep, SLAB_ATOMIC) +#define tcp_openreq_fastfree(req) kmem_cache_free(tcp_openreq_cachep, req) + +static inline void tcp_openreq_free(struct open_request *req) +{ + req->class->destructor(req); + tcp_openreq_fastfree(req); +} + +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) +#define TCP_INET_FAMILY(fam) ((fam) == AF_INET) +#else +#define TCP_INET_FAMILY(fam) 1 +#endif + +/* + * Pointers to address related TCP functions + * (i.e. things that depend on the address family) + */ + +struct tcp_func { + int (*queue_xmit) (struct sk_buff *skb, + int ipfragok); + + void (*send_check) (struct sock *sk, + struct tcphdr *th, + int len, + struct sk_buff *skb); + + int (*rebuild_header) (struct sock *sk); + + int (*conn_request) (struct sock *sk, + struct sk_buff *skb); + + struct sock * (*syn_recv_sock) (struct sock *sk, + struct sk_buff *skb, + struct open_request *req, + struct dst_entry *dst); + + int (*remember_stamp) (struct sock *sk); + + __u16 net_header_len; + + int (*setsockopt) (struct sock *sk, + int level, + int optname, + char __user *optval, + int optlen); + + int (*getsockopt) (struct sock *sk, + int level, + int optname, + char __user *optval, + int __user *optlen); + + + void (*addr2sockaddr) (struct sock *sk, + struct sockaddr *); + + int sockaddr_len; +}; + +/* + * The next routines deal with comparing 32 bit unsigned ints + * and worry about wraparound (automatic with unsigned arithmetic). + */ + +static inline int before(__u32 seq1, __u32 seq2) +{ + return (__s32)(seq1-seq2) < 0; +} + +static inline int after(__u32 seq1, __u32 seq2) +{ + return (__s32)(seq2-seq1) < 0; +} + + +/* is s2<=s1<=s3 ? */ +static inline int between(__u32 seq1, __u32 seq2, __u32 seq3) +{ + return seq3 - seq2 >= seq1 - seq2; +} + + +extern struct proto tcp_prot; + +DECLARE_SNMP_STAT(struct tcp_mib, tcp_statistics); +#define TCP_INC_STATS(field) SNMP_INC_STATS(tcp_statistics, field) +#define TCP_INC_STATS_BH(field) SNMP_INC_STATS_BH(tcp_statistics, field) +#define TCP_INC_STATS_USER(field) SNMP_INC_STATS_USER(tcp_statistics, field) +#define TCP_DEC_STATS(field) SNMP_DEC_STATS(tcp_statistics, field) +#define TCP_ADD_STATS_BH(field, val) SNMP_ADD_STATS_BH(tcp_statistics, field, val) +#define TCP_ADD_STATS_USER(field, val) SNMP_ADD_STATS_USER(tcp_statistics, field, val) + +extern void tcp_put_port(struct sock *sk); +extern void tcp_inherit_port(struct sock *sk, struct sock *child); + +extern void tcp_v4_err(struct sk_buff *skb, u32); + +extern void tcp_shutdown (struct sock *sk, int how); + +extern int tcp_v4_rcv(struct sk_buff *skb); + +extern int tcp_v4_remember_stamp(struct sock *sk); + +extern int tcp_v4_tw_remember_stamp(struct tcp_tw_bucket *tw); + +extern int tcp_sendmsg(struct kiocb *iocb, struct sock *sk, + struct msghdr *msg, size_t size); +extern ssize_t tcp_sendpage(struct socket *sock, struct page *page, int offset, size_t size, int flags); + +extern int tcp_ioctl(struct sock *sk, + int cmd, + unsigned long arg); + +extern int tcp_rcv_state_process(struct sock *sk, + struct sk_buff *skb, + struct tcphdr *th, + unsigned len); + +extern int tcp_rcv_established(struct sock *sk, + struct sk_buff *skb, + struct tcphdr *th, + unsigned len); + +extern void tcp_rcv_space_adjust(struct sock *sk); + +enum tcp_ack_state_t +{ + TCP_ACK_SCHED = 1, + TCP_ACK_TIMER = 2, + TCP_ACK_PUSHED= 4 +}; + +static inline void tcp_schedule_ack(struct tcp_sock *tp) +{ + tp->ack.pending |= TCP_ACK_SCHED; +} + +static inline int tcp_ack_scheduled(struct tcp_sock *tp) +{ + return tp->ack.pending&TCP_ACK_SCHED; +} + +static __inline__ void tcp_dec_quickack_mode(struct tcp_sock *tp) +{ + if (tp->ack.quick && --tp->ack.quick == 0) { + /* Leaving quickack mode we deflate ATO. */ + tp->ack.ato = TCP_ATO_MIN; + } +} + +extern void tcp_enter_quickack_mode(struct tcp_sock *tp); + +static __inline__ void tcp_delack_init(struct tcp_sock *tp) +{ + memset(&tp->ack, 0, sizeof(tp->ack)); +} + +static inline void tcp_clear_options(struct tcp_options_received *rx_opt) +{ + rx_opt->tstamp_ok = rx_opt->sack_ok = rx_opt->wscale_ok = rx_opt->snd_wscale = 0; +} + +enum tcp_tw_status +{ + TCP_TW_SUCCESS = 0, + TCP_TW_RST = 1, + TCP_TW_ACK = 2, + TCP_TW_SYN = 3 +}; + + +extern enum tcp_tw_status tcp_timewait_state_process(struct tcp_tw_bucket *tw, + struct sk_buff *skb, + struct tcphdr *th, + unsigned len); + +extern struct sock * tcp_check_req(struct sock *sk,struct sk_buff *skb, + struct open_request *req, + struct open_request **prev); +extern int tcp_child_process(struct sock *parent, + struct sock *child, + struct sk_buff *skb); +extern void tcp_enter_frto(struct sock *sk); +extern void tcp_enter_loss(struct sock *sk, int how); +extern void tcp_clear_retrans(struct tcp_sock *tp); +extern void tcp_update_metrics(struct sock *sk); + +extern void tcp_close(struct sock *sk, + long timeout); +extern struct sock * tcp_accept(struct sock *sk, int flags, int *err); +extern unsigned int tcp_poll(struct file * file, struct socket *sock, struct poll_table_struct *wait); + +extern int tcp_getsockopt(struct sock *sk, int level, + int optname, + char __user *optval, + int __user *optlen); +extern int tcp_setsockopt(struct sock *sk, int level, + int optname, char __user *optval, + int optlen); +extern void tcp_set_keepalive(struct sock *sk, int val); +extern int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, + struct msghdr *msg, + size_t len, int nonblock, + int flags, int *addr_len); + +extern int tcp_listen_start(struct sock *sk); + +extern void tcp_parse_options(struct sk_buff *skb, + struct tcp_options_received *opt_rx, + int estab); + +/* + * TCP v4 functions exported for the inet6 API + */ + +extern int tcp_v4_rebuild_header(struct sock *sk); + +extern int tcp_v4_build_header(struct sock *sk, + struct sk_buff *skb); + +extern void tcp_v4_send_check(struct sock *sk, + struct tcphdr *th, int len, + struct sk_buff *skb); + +extern int tcp_v4_conn_request(struct sock *sk, + struct sk_buff *skb); + +extern struct sock * tcp_create_openreq_child(struct sock *sk, + struct open_request *req, + struct sk_buff *skb); + +extern struct sock * tcp_v4_syn_recv_sock(struct sock *sk, + struct sk_buff *skb, + struct open_request *req, + struct dst_entry *dst); + +extern int tcp_v4_do_rcv(struct sock *sk, + struct sk_buff *skb); + +extern int tcp_v4_connect(struct sock *sk, + struct sockaddr *uaddr, + int addr_len); + +extern int tcp_connect(struct sock *sk); + +extern struct sk_buff * tcp_make_synack(struct sock *sk, + struct dst_entry *dst, + struct open_request *req); + +extern int tcp_disconnect(struct sock *sk, int flags); + +extern void tcp_unhash(struct sock *sk); + +extern int tcp_v4_hash_connecting(struct sock *sk); + + +/* From syncookies.c */ +extern struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb, + struct ip_options *opt); +extern __u32 cookie_v4_init_sequence(struct sock *sk, struct sk_buff *skb, + __u16 *mss); + +/* tcp_output.c */ + +extern int tcp_write_xmit(struct sock *, int nonagle); +extern int tcp_retransmit_skb(struct sock *, struct sk_buff *); +extern void tcp_xmit_retransmit_queue(struct sock *); +extern void tcp_simple_retransmit(struct sock *); +extern int tcp_trim_head(struct sock *, struct sk_buff *, u32); + +extern void tcp_send_probe0(struct sock *); +extern void tcp_send_partial(struct sock *); +extern int tcp_write_wakeup(struct sock *); +extern void tcp_send_fin(struct sock *sk); +extern void tcp_send_active_reset(struct sock *sk, int priority); +extern int tcp_send_synack(struct sock *); +extern void tcp_push_one(struct sock *, unsigned mss_now); +extern void tcp_send_ack(struct sock *sk); +extern void tcp_send_delayed_ack(struct sock *sk); + +/* tcp_timer.c */ +extern void tcp_init_xmit_timers(struct sock *); +extern void tcp_clear_xmit_timers(struct sock *); + +extern void tcp_delete_keepalive_timer(struct sock *); +extern void tcp_reset_keepalive_timer(struct sock *, unsigned long); +extern unsigned int tcp_sync_mss(struct sock *sk, u32 pmtu); +extern unsigned int tcp_current_mss(struct sock *sk, int large); + +#ifdef TCP_DEBUG +extern const char tcp_timer_bug_msg[]; +#endif + +/* tcp_diag.c */ +extern void tcp_get_info(struct sock *, struct tcp_info *); + +/* Read 'sendfile()'-style from a TCP socket */ +typedef int (*sk_read_actor_t)(read_descriptor_t *, struct sk_buff *, + unsigned int, size_t); +extern int tcp_read_sock(struct sock *sk, read_descriptor_t *desc, + sk_read_actor_t recv_actor); + +static inline void tcp_clear_xmit_timer(struct sock *sk, int what) +{ + struct tcp_sock *tp = tcp_sk(sk); + + switch (what) { + case TCP_TIME_RETRANS: + case TCP_TIME_PROBE0: + tp->pending = 0; + +#ifdef TCP_CLEAR_TIMERS + sk_stop_timer(sk, &tp->retransmit_timer); +#endif + break; + case TCP_TIME_DACK: + tp->ack.blocked = 0; + tp->ack.pending = 0; + +#ifdef TCP_CLEAR_TIMERS + sk_stop_timer(sk, &tp->delack_timer); +#endif + break; + default: +#ifdef TCP_DEBUG + printk(tcp_timer_bug_msg); +#endif + return; + }; + +} + +/* + * Reset the retransmission timer + */ +static inline void tcp_reset_xmit_timer(struct sock *sk, int what, unsigned long when) +{ + struct tcp_sock *tp = tcp_sk(sk); + + if (when > TCP_RTO_MAX) { +#ifdef TCP_DEBUG + printk(KERN_DEBUG "reset_xmit_timer sk=%p %d when=0x%lx, caller=%p\n", sk, what, when, current_text_addr()); +#endif + when = TCP_RTO_MAX; + } + + switch (what) { + case TCP_TIME_RETRANS: + case TCP_TIME_PROBE0: + tp->pending = what; + tp->timeout = jiffies+when; + sk_reset_timer(sk, &tp->retransmit_timer, tp->timeout); + break; + + case TCP_TIME_DACK: + tp->ack.pending |= TCP_ACK_TIMER; + tp->ack.timeout = jiffies+when; + sk_reset_timer(sk, &tp->delack_timer, tp->ack.timeout); + break; + + default: +#ifdef TCP_DEBUG + printk(tcp_timer_bug_msg); +#endif + return; + }; +} + +/* Initialize RCV_MSS value. + * RCV_MSS is an our guess about MSS used by the peer. + * We haven't any direct information about the MSS. + * It's better to underestimate the RCV_MSS rather than overestimate. + * Overestimations make us ACKing less frequently than needed. + * Underestimations are more easy to detect and fix by tcp_measure_rcv_mss(). + */ + +static inline void tcp_initialize_rcv_mss(struct sock *sk) +{ + struct tcp_sock *tp = tcp_sk(sk); + unsigned int hint = min(tp->advmss, tp->mss_cache_std); + + hint = min(hint, tp->rcv_wnd/2); + hint = min(hint, TCP_MIN_RCVMSS); + hint = max(hint, TCP_MIN_MSS); + + tp->ack.rcv_mss = hint; +} + +static __inline__ void __tcp_fast_path_on(struct tcp_sock *tp, u32 snd_wnd) +{ + tp->pred_flags = htonl((tp->tcp_header_len << 26) | + ntohl(TCP_FLAG_ACK) | + snd_wnd); +} + +static __inline__ void tcp_fast_path_on(struct tcp_sock *tp) +{ + __tcp_fast_path_on(tp, tp->snd_wnd >> tp->rx_opt.snd_wscale); +} + +static inline void tcp_fast_path_check(struct sock *sk, struct tcp_sock *tp) +{ + if (skb_queue_len(&tp->out_of_order_queue) == 0 && + tp->rcv_wnd && + atomic_read(&sk->sk_rmem_alloc) < sk->sk_rcvbuf && + !tp->urg_data) + tcp_fast_path_on(tp); +} + +/* Compute the actual receive window we are currently advertising. + * Rcv_nxt can be after the window if our peer push more data + * than the offered window. + */ +static __inline__ u32 tcp_receive_window(const struct tcp_sock *tp) +{ + s32 win = tp->rcv_wup + tp->rcv_wnd - tp->rcv_nxt; + + if (win < 0) + win = 0; + return (u32) win; +} + +/* Choose a new window, without checks for shrinking, and without + * scaling applied to the result. The caller does these things + * if necessary. This is a "raw" window selection. + */ +extern u32 __tcp_select_window(struct sock *sk); + +/* TCP timestamps are only 32-bits, this causes a slight + * complication on 64-bit systems since we store a snapshot + * of jiffies in the buffer control blocks below. We decidely + * only use of the low 32-bits of jiffies and hide the ugly + * casts with the following macro. + */ +#define tcp_time_stamp ((__u32)(jiffies)) + +/* This is what the send packet queueing engine uses to pass + * TCP per-packet control information to the transmission + * code. We also store the host-order sequence numbers in + * here too. This is 36 bytes on 32-bit architectures, + * 40 bytes on 64-bit machines, if this grows please adjust + * skbuff.h:skbuff->cb[xxx] size appropriately. + */ +struct tcp_skb_cb { + union { + struct inet_skb_parm h4; +#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) + struct inet6_skb_parm h6; +#endif + } header; /* For incoming frames */ + __u32 seq; /* Starting sequence number */ + __u32 end_seq; /* SEQ + FIN + SYN + datalen */ + __u32 when; /* used to compute rtt's */ + __u8 flags; /* TCP header flags. */ + + /* NOTE: These must match up to the flags byte in a + * real TCP header. + */ +#define TCPCB_FLAG_FIN 0x01 +#define TCPCB_FLAG_SYN 0x02 +#define TCPCB_FLAG_RST 0x04 +#define TCPCB_FLAG_PSH 0x08 +#define TCPCB_FLAG_ACK 0x10 +#define TCPCB_FLAG_URG 0x20 +#define TCPCB_FLAG_ECE 0x40 +#define TCPCB_FLAG_CWR 0x80 + + __u8 sacked; /* State flags for SACK/FACK. */ +#define TCPCB_SACKED_ACKED 0x01 /* SKB ACK'd by a SACK block */ +#define TCPCB_SACKED_RETRANS 0x02 /* SKB retransmitted */ +#define TCPCB_LOST 0x04 /* SKB is lost */ +#define TCPCB_TAGBITS 0x07 /* All tag bits */ + +#define TCPCB_EVER_RETRANS 0x80 /* Ever retransmitted frame */ +#define TCPCB_RETRANS (TCPCB_SACKED_RETRANS|TCPCB_EVER_RETRANS) + +#define TCPCB_URG 0x20 /* Urgent pointer advenced here */ + +#define TCPCB_AT_TAIL (TCPCB_URG) + + __u16 urg_ptr; /* Valid w/URG flags is set. */ + __u32 ack_seq; /* Sequence number ACK'd */ +}; + +#define TCP_SKB_CB(__skb) ((struct tcp_skb_cb *)&((__skb)->cb[0])) + +#include <net/tcp_ecn.h> + +/* Due to TSO, an SKB can be composed of multiple actual + * packets. To keep these tracked properly, we use this. + */ +static inline int tcp_skb_pcount(const struct sk_buff *skb) +{ + return skb_shinfo(skb)->tso_segs; +} + +/* This is valid iff tcp_skb_pcount() > 1. */ +static inline int tcp_skb_mss(const struct sk_buff *skb) +{ + return skb_shinfo(skb)->tso_size; +} + +static inline void tcp_dec_pcount_approx(__u32 *count, + const struct sk_buff *skb) +{ + if (*count) { + *count -= tcp_skb_pcount(skb); + if ((int)*count < 0) + *count = 0; + } +} + +static inline void tcp_packets_out_inc(struct sock *sk, + struct tcp_sock *tp, + const struct sk_buff *skb) +{ + int orig = tp->packets_out; + + tp->packets_out += tcp_skb_pcount(skb); + if (!orig) + tcp_reset_xmit_timer(sk, TCP_TIME_RETRANS, tp->rto); +} + +static inline void tcp_packets_out_dec(struct tcp_sock *tp, + const struct sk_buff *skb) +{ + tp->packets_out -= tcp_skb_pcount(skb); +} + +/* This determines how many packets are "in the network" to the best + * of our knowledge. In many cases it is conservative, but where + * detailed information is available from the receiver (via SACK + * blocks etc.) we can make more aggressive calculations. + * + * Use this for decisions involving congestion control, use just + * tp->packets_out to determine if the send queue is empty or not. + * + * Read this equation as: + * + * "Packets sent once on transmission queue" MINUS + * "Packets left network, but not honestly ACKed yet" PLUS + * "Packets fast retransmitted" + */ +static __inline__ unsigned int tcp_packets_in_flight(const struct tcp_sock *tp) +{ + return (tp->packets_out - tp->left_out + tp->retrans_out); +} + +/* + * Which congestion algorithim is in use on the connection. + */ +#define tcp_is_vegas(__tp) ((__tp)->adv_cong == TCP_VEGAS) +#define tcp_is_westwood(__tp) ((__tp)->adv_cong == TCP_WESTWOOD) +#define tcp_is_bic(__tp) ((__tp)->adv_cong == TCP_BIC) + +/* Recalculate snd_ssthresh, we want to set it to: + * + * Reno: + * one half the current congestion window, but no + * less than two segments + * + * BIC: + * behave like Reno until low_window is reached, + * then increase congestion window slowly + */ +static inline __u32 tcp_recalc_ssthresh(struct tcp_sock *tp) +{ + if (tcp_is_bic(tp)) { + if (sysctl_tcp_bic_fast_convergence && + tp->snd_cwnd < tp->bictcp.last_max_cwnd) + tp->bictcp.last_max_cwnd = (tp->snd_cwnd * + (BICTCP_BETA_SCALE + + sysctl_tcp_bic_beta)) + / (2 * BICTCP_BETA_SCALE); + else + tp->bictcp.last_max_cwnd = tp->snd_cwnd; + + if (tp->snd_cwnd > sysctl_tcp_bic_low_window) + return max((tp->snd_cwnd * sysctl_tcp_bic_beta) + / BICTCP_BETA_SCALE, 2U); + } + + return max(tp->snd_cwnd >> 1U, 2U); +} + +/* Stop taking Vegas samples for now. */ +#define tcp_vegas_disable(__tp) ((__tp)->vegas.doing_vegas_now = 0) + +static inline void tcp_vegas_enable(struct tcp_sock *tp) +{ + /* There are several situations when we must "re-start" Vegas: + * + * o when a connection is established + * o after an RTO + * o after fast recovery + * o when we send a packet and there is no outstanding + * unacknowledged data (restarting an idle connection) + * + * In these circumstances we cannot do a Vegas calculation at the + * end of the first RTT, because any calculation we do is using + * stale info -- both the saved cwnd and congestion feedback are + * stale. + * + * Instead we must wait until the completion of an RTT during + * which we actually receive ACKs. + */ + + /* Begin taking Vegas samples next time we send something. */ + tp->vegas.doing_vegas_now = 1; + + /* Set the beginning of the next send window. */ + tp->vegas.beg_snd_nxt = tp->snd_nxt; + + tp->vegas.cntRTT = 0; + tp->vegas.minRTT = 0x7fffffff; +} + +/* Should we be taking Vegas samples right now? */ +#define tcp_vegas_enabled(__tp) ((__tp)->vegas.doing_vegas_now) + +extern void tcp_ca_init(struct tcp_sock *tp); + +static inline void tcp_set_ca_state(struct tcp_sock *tp, u8 ca_state) +{ + if (tcp_is_vegas(tp)) { + if (ca_state == TCP_CA_Open) + tcp_vegas_enable(tp); + else + tcp_vegas_disable(tp); + } + tp->ca_state = ca_state; +} + +/* If cwnd > ssthresh, we may raise ssthresh to be half-way to cwnd. + * The exception is rate halving phase, when cwnd is decreasing towards + * ssthresh. + */ +static inline __u32 tcp_current_ssthresh(struct tcp_sock *tp) +{ + if ((1<<tp->ca_state)&(TCPF_CA_CWR|TCPF_CA_Recovery)) + return tp->snd_ssthresh; + else + return max(tp->snd_ssthresh, + ((tp->snd_cwnd >> 1) + + (tp->snd_cwnd >> 2))); +} + +static inline void tcp_sync_left_out(struct tcp_sock *tp) +{ + if (tp->rx_opt.sack_ok && + (tp->sacked_out >= tp->packets_out - tp->lost_out)) + tp->sacked_out = tp->packets_out - tp->lost_out; + tp->left_out = tp->sacked_out + tp->lost_out; +} + +extern void tcp_cwnd_application_limited(struct sock *sk); + +/* Congestion window validation. (RFC2861) */ + +static inline void tcp_cwnd_validate(struct sock *sk, struct tcp_sock *tp) +{ + __u32 packets_out = tp->packets_out; + + if (packets_out >= tp->snd_cwnd) { + /* Network is feed fully. */ + tp->snd_cwnd_used = 0; + tp->snd_cwnd_stamp = tcp_time_stamp; + } else { + /* Network starves. */ + if (tp->packets_out > tp->snd_cwnd_used) + tp->snd_cwnd_used = tp->packets_out; + + if ((s32)(tcp_time_stamp - tp->snd_cwnd_stamp) >= tp->rto) + tcp_cwnd_application_limited(sk); + } +} + +/* Set slow start threshould and cwnd not falling to slow start */ +static inline void __tcp_enter_cwr(struct tcp_sock *tp) +{ + tp->undo_marker = 0; + tp->snd_ssthresh = tcp_recalc_ssthresh(tp); + tp->snd_cwnd = min(tp->snd_cwnd, + tcp_packets_in_flight(tp) + 1U); + tp->snd_cwnd_cnt = 0; + tp->high_seq = tp->snd_nxt; + tp->snd_cwnd_stamp = tcp_time_stamp; + TCP_ECN_queue_cwr(tp); +} + +static inline void tcp_enter_cwr(struct tcp_sock *tp) +{ + tp->prior_ssthresh = 0; + if (tp->ca_state < TCP_CA_CWR) { + __tcp_enter_cwr(tp); + tcp_set_ca_state(tp, TCP_CA_CWR); + } +} + +extern __u32 tcp_init_cwnd(struct tcp_sock *tp, struct dst_entry *dst); + +/* Slow start with delack produces 3 packets of burst, so that + * it is safe "de facto". + */ +static __inline__ __u32 tcp_max_burst(const struct tcp_sock *tp) +{ + return 3; +} + +static __inline__ int tcp_minshall_check(const struct tcp_sock *tp) +{ + return after(tp->snd_sml,tp->snd_una) && + !after(tp->snd_sml, tp->snd_nxt); +} + +static __inline__ void tcp_minshall_update(struct tcp_sock *tp, int mss, + const struct sk_buff *skb) +{ + if (skb->len < mss) + tp->snd_sml = TCP_SKB_CB(skb)->end_seq; +} + +/* Return 0, if packet can be sent now without violation Nagle's rules: + 1. It is full sized. + 2. Or it contains FIN. + 3. Or TCP_NODELAY was set. + 4. Or TCP_CORK is not set, and all sent packets are ACKed. + With Minshall's modification: all sent small packets are ACKed. + */ + +static __inline__ int +tcp_nagle_check(const struct tcp_sock *tp, const struct sk_buff *skb, + unsigned mss_now, int nonagle) +{ + return (skb->len < mss_now && + !(TCP_SKB_CB(skb)->flags & TCPCB_FLAG_FIN) && + ((nonagle&TCP_NAGLE_CORK) || + (!nonagle && + tp->packets_out && + tcp_minshall_check(tp)))); +} + +extern void tcp_set_skb_tso_segs(struct sk_buff *, unsigned int); + +/* This checks if the data bearing packet SKB (usually sk->sk_send_head) + * should be put on the wire right now. + */ +static __inline__ int tcp_snd_test(const struct tcp_sock *tp, + struct sk_buff *skb, + unsigned cur_mss, int nonagle) +{ + int pkts = tcp_skb_pcount(skb); + + if (!pkts) { + tcp_set_skb_tso_segs(skb, tp->mss_cache_std); + pkts = tcp_skb_pcount(skb); + } + + /* RFC 1122 - section 4.2.3.4 + * + * We must queue if + * + * a) The right edge of this frame exceeds the window + * b) There are packets in flight and we have a small segment + * [SWS avoidance and Nagle algorithm] + * (part of SWS is done on packetization) + * Minshall version sounds: there are no _small_ + * segments in flight. (tcp_nagle_check) + * c) We have too many packets 'in flight' + * + * Don't use the nagle rule for urgent data (or + * for the final FIN -DaveM). + * + * Also, Nagle rule does not apply to frames, which + * sit in the middle of queue (they have no chances + * to get new data) and if room at tail of skb is + * not enough to save something seriously (<32 for now). + */ + + /* Don't be strict about the congestion window for the + * final FIN frame. -DaveM + */ + return (((nonagle&TCP_NAGLE_PUSH) || tp->urg_mode + || !tcp_nagle_check(tp, skb, cur_mss, nonagle)) && + (((tcp_packets_in_flight(tp) + (pkts-1)) < tp->snd_cwnd) || + (TCP_SKB_CB(skb)->flags & TCPCB_FLAG_FIN)) && + !after(TCP_SKB_CB(skb)->end_seq, tp->snd_una + tp->snd_wnd)); +} + +static __inline__ void tcp_check_probe_timer(struct sock *sk, struct tcp_sock *tp) +{ + if (!tp->packets_out && !tp->pending) + tcp_reset_xmit_timer(sk, TCP_TIME_PROBE0, tp->rto); +} + +static __inline__ int tcp_skb_is_last(const struct sock *sk, + const struct sk_buff *skb) +{ + return skb->next == (struct sk_buff *)&sk->sk_write_queue; +} + +/* Push out any pending frames which were held back due to + * TCP_CORK or attempt at coalescing tiny packets. + * The socket must be locked by the caller. + */ +static __inline__ void __tcp_push_pending_frames(struct sock *sk, + struct tcp_sock *tp, + unsigned cur_mss, + int nonagle) +{ + struct sk_buff *skb = sk->sk_send_head; + + if (skb) { + if (!tcp_skb_is_last(sk, skb)) + nonagle = TCP_NAGLE_PUSH; + if (!tcp_snd_test(tp, skb, cur_mss, nonagle) || + tcp_write_xmit(sk, nonagle)) + tcp_check_probe_timer(sk, tp); + } + tcp_cwnd_validate(sk, tp); +} + +static __inline__ void tcp_push_pending_frames(struct sock *sk, + struct tcp_sock *tp) +{ + __tcp_push_pending_frames(sk, tp, tcp_current_mss(sk, 1), tp->nonagle); +} + +static __inline__ int tcp_may_send_now(struct sock *sk, struct tcp_sock *tp) +{ + struct sk_buff *skb = sk->sk_send_head; + + return (skb && + tcp_snd_test(tp, skb, tcp_current_mss(sk, 1), + tcp_skb_is_last(sk, skb) ? TCP_NAGLE_PUSH : tp->nonagle)); +} + +static __inline__ void tcp_init_wl(struct tcp_sock *tp, u32 ack, u32 seq) +{ + tp->snd_wl1 = seq; +} + +static __inline__ void tcp_update_wl(struct tcp_sock *tp, u32 ack, u32 seq) +{ + tp->snd_wl1 = seq; +} + +extern void tcp_destroy_sock(struct sock *sk); + + +/* + * Calculate(/check) TCP checksum + */ +static __inline__ u16 tcp_v4_check(struct tcphdr *th, int len, + unsigned long saddr, unsigned long daddr, + unsigned long base) +{ + return csum_tcpudp_magic(saddr,daddr,len,IPPROTO_TCP,base); +} + +static __inline__ int __tcp_checksum_complete(struct sk_buff *skb) +{ + return (unsigned short)csum_fold(skb_checksum(skb, 0, skb->len, skb->csum)); +} + +static __inline__ int tcp_checksum_complete(struct sk_buff *skb) +{ + return skb->ip_summed != CHECKSUM_UNNECESSARY && + __tcp_checksum_complete(skb); +} + +/* Prequeue for VJ style copy to user, combined with checksumming. */ + +static __inline__ void tcp_prequeue_init(struct tcp_sock *tp) +{ + tp->ucopy.task = NULL; + tp->ucopy.len = 0; + tp->ucopy.memory = 0; + skb_queue_head_init(&tp->ucopy.prequeue); +} + +/* Packet is added to VJ-style prequeue for processing in process + * context, if a reader task is waiting. Apparently, this exciting + * idea (VJ's mail "Re: query about TCP header on tcp-ip" of 07 Sep 93) + * failed somewhere. Latency? Burstiness? Well, at least now we will + * see, why it failed. 8)8) --ANK + * + * NOTE: is this not too big to inline? + */ +static __inline__ int tcp_prequeue(struct sock *sk, struct sk_buff *skb) +{ + struct tcp_sock *tp = tcp_sk(sk); + + if (!sysctl_tcp_low_latency && tp->ucopy.task) { + __skb_queue_tail(&tp->ucopy.prequeue, skb); + tp->ucopy.memory += skb->truesize; + if (tp->ucopy.memory > sk->sk_rcvbuf) { + struct sk_buff *skb1; + + BUG_ON(sock_owned_by_user(sk)); + + while ((skb1 = __skb_dequeue(&tp->ucopy.prequeue)) != NULL) { + sk->sk_backlog_rcv(sk, skb1); + NET_INC_STATS_BH(LINUX_MIB_TCPPREQUEUEDROPPED); + } + + tp->ucopy.memory = 0; + } else if (skb_queue_len(&tp->ucopy.prequeue) == 1) { + wake_up_interruptible(sk->sk_sleep); + if (!tcp_ack_scheduled(tp)) + tcp_reset_xmit_timer(sk, TCP_TIME_DACK, (3*TCP_RTO_MIN)/4); + } + return 1; + } + return 0; +} + + +#undef STATE_TRACE + +#ifdef STATE_TRACE +static const char *statename[]={ + "Unused","Established","Syn Sent","Syn Recv", + "Fin Wait 1","Fin Wait 2","Time Wait", "Close", + "Close Wait","Last ACK","Listen","Closing" +}; +#endif + +static __inline__ void tcp_set_state(struct sock *sk, int state) +{ + int oldstate = sk->sk_state; + + switch (state) { + case TCP_ESTABLISHED: + if (oldstate != TCP_ESTABLISHED) + TCP_INC_STATS(TCP_MIB_CURRESTAB); + break; + + case TCP_CLOSE: + if (oldstate == TCP_CLOSE_WAIT || oldstate == TCP_ESTABLISHED) + TCP_INC_STATS(TCP_MIB_ESTABRESETS); + + sk->sk_prot->unhash(sk); + if (tcp_sk(sk)->bind_hash && + !(sk->sk_userlocks & SOCK_BINDPORT_LOCK)) + tcp_put_port(sk); + /* fall through */ + default: + if (oldstate==TCP_ESTABLISHED) + TCP_DEC_STATS(TCP_MIB_CURRESTAB); + } + + /* Change state AFTER socket is unhashed to avoid closed + * socket sitting in hash tables. + */ + sk->sk_state = state; + +#ifdef STATE_TRACE + SOCK_DEBUG(sk, "TCP sk=%p, State %s -> %s\n",sk, statename[oldstate],statename[state]); +#endif +} + +static __inline__ void tcp_done(struct sock *sk) +{ + tcp_set_state(sk, TCP_CLOSE); + tcp_clear_xmit_timers(sk); + + sk->sk_shutdown = SHUTDOWN_MASK; + + if (!sock_flag(sk, SOCK_DEAD)) + sk->sk_state_change(sk); + else + tcp_destroy_sock(sk); +} + +static __inline__ void tcp_sack_reset(struct tcp_options_received *rx_opt) +{ + rx_opt->dsack = 0; + rx_opt->eff_sacks = 0; + rx_opt->num_sacks = 0; +} + +static __inline__ void tcp_build_and_update_options(__u32 *ptr, struct tcp_sock *tp, __u32 tstamp) +{ + if (tp->rx_opt.tstamp_ok) { + *ptr++ = __constant_htonl((TCPOPT_NOP << 24) | + (TCPOPT_NOP << 16) | + (TCPOPT_TIMESTAMP << 8) | + TCPOLEN_TIMESTAMP); + *ptr++ = htonl(tstamp); + *ptr++ = htonl(tp->rx_opt.ts_recent); + } + if (tp->rx_opt.eff_sacks) { + struct tcp_sack_block *sp = tp->rx_opt.dsack ? tp->duplicate_sack : tp->selective_acks; + int this_sack; + + *ptr++ = __constant_htonl((TCPOPT_NOP << 24) | + (TCPOPT_NOP << 16) | + (TCPOPT_SACK << 8) | + (TCPOLEN_SACK_BASE + + (tp->rx_opt.eff_sacks * TCPOLEN_SACK_PERBLOCK))); + for(this_sack = 0; this_sack < tp->rx_opt.eff_sacks; this_sack++) { + *ptr++ = htonl(sp[this_sack].start_seq); + *ptr++ = htonl(sp[this_sack].end_seq); + } + if (tp->rx_opt.dsack) { + tp->rx_opt.dsack = 0; + tp->rx_opt.eff_sacks--; + } + } +} + +/* Construct a tcp options header for a SYN or SYN_ACK packet. + * If this is every changed make sure to change the definition of + * MAX_SYN_SIZE to match the new maximum number of options that you + * can generate. + */ +static inline void tcp_syn_build_options(__u32 *ptr, int mss, int ts, int sack, + int offer_wscale, int wscale, __u32 tstamp, __u32 ts_recent) +{ + /* We always get an MSS option. + * The option bytes which will be seen in normal data + * packets should timestamps be used, must be in the MSS + * advertised. But we subtract them from tp->mss_cache so + * that calculations in tcp_sendmsg are simpler etc. + * So account for this fact here if necessary. If we + * don't do this correctly, as a receiver we won't + * recognize data packets as being full sized when we + * should, and thus we won't abide by the delayed ACK + * rules correctly. + * SACKs don't matter, we never delay an ACK when we + * have any of those going out. + */ + *ptr++ = htonl((TCPOPT_MSS << 24) | (TCPOLEN_MSS << 16) | mss); + if (ts) { + if(sack) + *ptr++ = __constant_htonl((TCPOPT_SACK_PERM << 24) | (TCPOLEN_SACK_PERM << 16) | + (TCPOPT_TIMESTAMP << 8) | TCPOLEN_TIMESTAMP); + else + *ptr++ = __constant_htonl((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16) | + (TCPOPT_TIMESTAMP << 8) | TCPOLEN_TIMESTAMP); + *ptr++ = htonl(tstamp); /* TSVAL */ + *ptr++ = htonl(ts_recent); /* TSECR */ + } else if(sack) + *ptr++ = __constant_htonl((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16) | + (TCPOPT_SACK_PERM << 8) | TCPOLEN_SACK_PERM); + if (offer_wscale) + *ptr++ = htonl((TCPOPT_NOP << 24) | (TCPOPT_WINDOW << 16) | (TCPOLEN_WINDOW << 8) | (wscale)); +} + +/* Determine a window scaling and initial window to offer. */ +extern void tcp_select_initial_window(int __space, __u32 mss, + __u32 *rcv_wnd, __u32 *window_clamp, + int wscale_ok, __u8 *rcv_wscale); + +static inline int tcp_win_from_space(int space) +{ + return sysctl_tcp_adv_win_scale<=0 ? + (space>>(-sysctl_tcp_adv_win_scale)) : + space - (space>>sysctl_tcp_adv_win_scale); +} + +/* Note: caller must be prepared to deal with negative returns */ +static inline int tcp_space(const struct sock *sk) +{ + return tcp_win_from_space(sk->sk_rcvbuf - + atomic_read(&sk->sk_rmem_alloc)); +} + +static inline int tcp_full_space(const struct sock *sk) +{ + return tcp_win_from_space(sk->sk_rcvbuf); +} + +static inline void tcp_acceptq_queue(struct sock *sk, struct open_request *req, + struct sock *child) +{ + struct tcp_sock *tp = tcp_sk(sk); + + req->sk = child; + sk_acceptq_added(sk); + + if (!tp->accept_queue_tail) { + tp->accept_queue = req; + } else { + tp->accept_queue_tail->dl_next = req; + } + tp->accept_queue_tail = req; + req->dl_next = NULL; +} + +struct tcp_listen_opt +{ + u8 max_qlen_log; /* log_2 of maximal queued SYNs */ + int qlen; + int qlen_young; + int clock_hand; + u32 hash_rnd; + struct open_request *syn_table[TCP_SYNQ_HSIZE]; +}; + +static inline void +tcp_synq_removed(struct sock *sk, struct open_request *req) +{ + struct tcp_listen_opt *lopt = tcp_sk(sk)->listen_opt; + + if (--lopt->qlen == 0) + tcp_delete_keepalive_timer(sk); + if (req->retrans == 0) + lopt->qlen_young--; +} + +static inline void tcp_synq_added(struct sock *sk) +{ + struct tcp_listen_opt *lopt = tcp_sk(sk)->listen_opt; + + if (lopt->qlen++ == 0) + tcp_reset_keepalive_timer(sk, TCP_TIMEOUT_INIT); + lopt->qlen_young++; +} + +static inline int tcp_synq_len(struct sock *sk) +{ + return tcp_sk(sk)->listen_opt->qlen; +} + +static inline int tcp_synq_young(struct sock *sk) +{ + return tcp_sk(sk)->listen_opt->qlen_young; +} + +static inline int tcp_synq_is_full(struct sock *sk) +{ + return tcp_synq_len(sk) >> tcp_sk(sk)->listen_opt->max_qlen_log; +} + +static inline void tcp_synq_unlink(struct tcp_sock *tp, struct open_request *req, + struct open_request **prev) +{ + write_lock(&tp->syn_wait_lock); + *prev = req->dl_next; + write_unlock(&tp->syn_wait_lock); +} + +static inline void tcp_synq_drop(struct sock *sk, struct open_request *req, + struct open_request **prev) +{ + tcp_synq_unlink(tcp_sk(sk), req, prev); + tcp_synq_removed(sk, req); + tcp_openreq_free(req); +} + +static __inline__ void tcp_openreq_init(struct open_request *req, + struct tcp_options_received *rx_opt, + struct sk_buff *skb) +{ + req->rcv_wnd = 0; /* So that tcp_send_synack() knows! */ + req->rcv_isn = TCP_SKB_CB(skb)->seq; + req->mss = rx_opt->mss_clamp; + req->ts_recent = rx_opt->saw_tstamp ? rx_opt->rcv_tsval : 0; + req->tstamp_ok = rx_opt->tstamp_ok; + req->sack_ok = rx_opt->sack_ok; + req->snd_wscale = rx_opt->snd_wscale; + req->wscale_ok = rx_opt->wscale_ok; + req->acked = 0; + req->ecn_ok = 0; + req->rmt_port = skb->h.th->source; +} + +extern void tcp_enter_memory_pressure(void); + +extern void tcp_listen_wlock(void); + +/* - We may sleep inside this lock. + * - If sleeping is not required (or called from BH), + * use plain read_(un)lock(&tcp_lhash_lock). + */ + +static inline void tcp_listen_lock(void) +{ + /* read_lock synchronizes to candidates to writers */ + read_lock(&tcp_lhash_lock); + atomic_inc(&tcp_lhash_users); + read_unlock(&tcp_lhash_lock); +} + +static inline void tcp_listen_unlock(void) +{ + if (atomic_dec_and_test(&tcp_lhash_users)) + wake_up(&tcp_lhash_wait); +} + +static inline int keepalive_intvl_when(const struct tcp_sock *tp) +{ + return tp->keepalive_intvl ? : sysctl_tcp_keepalive_intvl; +} + +static inline int keepalive_time_when(const struct tcp_sock *tp) +{ + return tp->keepalive_time ? : sysctl_tcp_keepalive_time; +} + +static inline int tcp_fin_time(const struct tcp_sock *tp) +{ + int fin_timeout = tp->linger2 ? : sysctl_tcp_fin_timeout; + + if (fin_timeout < (tp->rto<<2) - (tp->rto>>1)) + fin_timeout = (tp->rto<<2) - (tp->rto>>1); + + return fin_timeout; +} + +static inline int tcp_paws_check(const struct tcp_options_received *rx_opt, int rst) +{ + if ((s32)(rx_opt->rcv_tsval - rx_opt->ts_recent) >= 0) + return 0; + if (xtime.tv_sec >= rx_opt->ts_recent_stamp + TCP_PAWS_24DAYS) + return 0; + + /* RST segments are not recommended to carry timestamp, + and, if they do, it is recommended to ignore PAWS because + "their cleanup function should take precedence over timestamps." + Certainly, it is mistake. It is necessary to understand the reasons + of this constraint to relax it: if peer reboots, clock may go + out-of-sync and half-open connections will not be reset. + Actually, the problem would be not existing if all + the implementations followed draft about maintaining clock + via reboots. Linux-2.2 DOES NOT! + + However, we can relax time bounds for RST segments to MSL. + */ + if (rst && xtime.tv_sec >= rx_opt->ts_recent_stamp + TCP_PAWS_MSL) + return 0; + return 1; +} + +static inline void tcp_v4_setup_caps(struct sock *sk, struct dst_entry *dst) +{ + sk->sk_route_caps = dst->dev->features; + if (sk->sk_route_caps & NETIF_F_TSO) { + if (sock_flag(sk, SOCK_NO_LARGESEND) || dst->header_len) + sk->sk_route_caps &= ~NETIF_F_TSO; + } +} + +#define TCP_CHECK_TIMER(sk) do { } while (0) + +static inline int tcp_use_frto(const struct sock *sk) +{ + const struct tcp_sock *tp = tcp_sk(sk); + + /* F-RTO must be activated in sysctl and there must be some + * unsent new data, and the advertised window should allow + * sending it. + */ + return (sysctl_tcp_frto && sk->sk_send_head && + !after(TCP_SKB_CB(sk->sk_send_head)->end_seq, + tp->snd_una + tp->snd_wnd)); +} + +static inline void tcp_mib_init(void) +{ + /* See RFC 2012 */ + TCP_ADD_STATS_USER(TCP_MIB_RTOALGORITHM, 1); + TCP_ADD_STATS_USER(TCP_MIB_RTOMIN, TCP_RTO_MIN*1000/HZ); + TCP_ADD_STATS_USER(TCP_MIB_RTOMAX, TCP_RTO_MAX*1000/HZ); + TCP_ADD_STATS_USER(TCP_MIB_MAXCONN, -1); +} + +/* /proc */ +enum tcp_seq_states { + TCP_SEQ_STATE_LISTENING, + TCP_SEQ_STATE_OPENREQ, + TCP_SEQ_STATE_ESTABLISHED, + TCP_SEQ_STATE_TIME_WAIT, +}; + +struct tcp_seq_afinfo { + struct module *owner; + char *name; + sa_family_t family; + int (*seq_show) (struct seq_file *m, void *v); + struct file_operations *seq_fops; +}; + +struct tcp_iter_state { + sa_family_t family; + enum tcp_seq_states state; + struct sock *syn_wait_sk; + int bucket, sbucket, num, uid; + struct seq_operations seq_ops; +}; + +extern int tcp_proc_register(struct tcp_seq_afinfo *afinfo); +extern void tcp_proc_unregister(struct tcp_seq_afinfo *afinfo); + +/* TCP Westwood functions and constants */ + +#define TCP_WESTWOOD_INIT_RTT (20*HZ) /* maybe too conservative?! */ +#define TCP_WESTWOOD_RTT_MIN (HZ/20) /* 50ms */ + +static inline void tcp_westwood_update_rtt(struct tcp_sock *tp, __u32 rtt_seq) +{ + if (tcp_is_westwood(tp)) + tp->westwood.rtt = rtt_seq; +} + +static inline __u32 __tcp_westwood_bw_rttmin(const struct tcp_sock *tp) +{ + return max((tp->westwood.bw_est) * (tp->westwood.rtt_min) / + (__u32) (tp->mss_cache_std), + 2U); +} + +static inline __u32 tcp_westwood_bw_rttmin(const struct tcp_sock *tp) +{ + return tcp_is_westwood(tp) ? __tcp_westwood_bw_rttmin(tp) : 0; +} + +static inline int tcp_westwood_ssthresh(struct tcp_sock *tp) +{ + __u32 ssthresh = 0; + + if (tcp_is_westwood(tp)) { + ssthresh = __tcp_westwood_bw_rttmin(tp); + if (ssthresh) + tp->snd_ssthresh = ssthresh; + } + + return (ssthresh != 0); +} + +static inline int tcp_westwood_cwnd(struct tcp_sock *tp) +{ + __u32 cwnd = 0; + + if (tcp_is_westwood(tp)) { + cwnd = __tcp_westwood_bw_rttmin(tp); + if (cwnd) + tp->snd_cwnd = cwnd; + } + + return (cwnd != 0); +} +#endif /* _TCP_H */ diff --git a/include/net/tcp_ecn.h b/include/net/tcp_ecn.h new file mode 100644 index 000000000000..dc1456389a97 --- /dev/null +++ b/include/net/tcp_ecn.h @@ -0,0 +1,126 @@ +#ifndef _NET_TCP_ECN_H_ +#define _NET_TCP_ECN_H_ 1 + +#include <net/inet_ecn.h> + +#define TCP_HP_BITS (~(TCP_RESERVED_BITS|TCP_FLAG_PSH)) + +#define TCP_ECN_OK 1 +#define TCP_ECN_QUEUE_CWR 2 +#define TCP_ECN_DEMAND_CWR 4 + +static inline void TCP_ECN_queue_cwr(struct tcp_sock *tp) +{ + if (tp->ecn_flags&TCP_ECN_OK) + tp->ecn_flags |= TCP_ECN_QUEUE_CWR; +} + + +/* Output functions */ + +static inline void TCP_ECN_send_synack(struct tcp_sock *tp, + struct sk_buff *skb) +{ + TCP_SKB_CB(skb)->flags &= ~TCPCB_FLAG_CWR; + if (!(tp->ecn_flags&TCP_ECN_OK)) + TCP_SKB_CB(skb)->flags &= ~TCPCB_FLAG_ECE; +} + +static inline void TCP_ECN_send_syn(struct sock *sk, struct tcp_sock *tp, + struct sk_buff *skb) +{ + tp->ecn_flags = 0; + if (sysctl_tcp_ecn && !(sk->sk_route_caps & NETIF_F_TSO)) { + TCP_SKB_CB(skb)->flags |= TCPCB_FLAG_ECE|TCPCB_FLAG_CWR; + tp->ecn_flags = TCP_ECN_OK; + sock_set_flag(sk, SOCK_NO_LARGESEND); + } +} + +static __inline__ void +TCP_ECN_make_synack(struct open_request *req, struct tcphdr *th) +{ + if (req->ecn_ok) + th->ece = 1; +} + +static inline void TCP_ECN_send(struct sock *sk, struct tcp_sock *tp, + struct sk_buff *skb, int tcp_header_len) +{ + if (tp->ecn_flags & TCP_ECN_OK) { + /* Not-retransmitted data segment: set ECT and inject CWR. */ + if (skb->len != tcp_header_len && + !before(TCP_SKB_CB(skb)->seq, tp->snd_nxt)) { + INET_ECN_xmit(sk); + if (tp->ecn_flags&TCP_ECN_QUEUE_CWR) { + tp->ecn_flags &= ~TCP_ECN_QUEUE_CWR; + skb->h.th->cwr = 1; + } + } else { + /* ACK or retransmitted segment: clear ECT|CE */ + INET_ECN_dontxmit(sk); + } + if (tp->ecn_flags & TCP_ECN_DEMAND_CWR) + skb->h.th->ece = 1; + } +} + +/* Input functions */ + +static inline void TCP_ECN_accept_cwr(struct tcp_sock *tp, struct sk_buff *skb) +{ + if (skb->h.th->cwr) + tp->ecn_flags &= ~TCP_ECN_DEMAND_CWR; +} + +static inline void TCP_ECN_withdraw_cwr(struct tcp_sock *tp) +{ + tp->ecn_flags &= ~TCP_ECN_DEMAND_CWR; +} + +static inline void TCP_ECN_check_ce(struct tcp_sock *tp, struct sk_buff *skb) +{ + if (tp->ecn_flags&TCP_ECN_OK) { + if (INET_ECN_is_ce(TCP_SKB_CB(skb)->flags)) + tp->ecn_flags |= TCP_ECN_DEMAND_CWR; + /* Funny extension: if ECT is not set on a segment, + * it is surely retransmit. It is not in ECN RFC, + * but Linux follows this rule. */ + else if (INET_ECN_is_not_ect((TCP_SKB_CB(skb)->flags))) + tcp_enter_quickack_mode(tp); + } +} + +static inline void TCP_ECN_rcv_synack(struct tcp_sock *tp, struct tcphdr *th) +{ + if ((tp->ecn_flags&TCP_ECN_OK) && (!th->ece || th->cwr)) + tp->ecn_flags &= ~TCP_ECN_OK; +} + +static inline void TCP_ECN_rcv_syn(struct tcp_sock *tp, struct tcphdr *th) +{ + if ((tp->ecn_flags&TCP_ECN_OK) && (!th->ece || !th->cwr)) + tp->ecn_flags &= ~TCP_ECN_OK; +} + +static inline int TCP_ECN_rcv_ecn_echo(struct tcp_sock *tp, struct tcphdr *th) +{ + if (th->ece && !th->syn && (tp->ecn_flags&TCP_ECN_OK)) + return 1; + return 0; +} + +static inline void TCP_ECN_openreq_child(struct tcp_sock *tp, + struct open_request *req) +{ + tp->ecn_flags = req->ecn_ok ? TCP_ECN_OK : 0; +} + +static __inline__ void +TCP_ECN_create_request(struct open_request *req, struct tcphdr *th) +{ + if (sysctl_tcp_ecn && th->ece && th->cwr) + req->ecn_ok = 1; +} + +#endif diff --git a/include/net/transp_v6.h b/include/net/transp_v6.h new file mode 100644 index 000000000000..8b075ab7a26c --- /dev/null +++ b/include/net/transp_v6.h @@ -0,0 +1,53 @@ +#ifndef _TRANSP_V6_H +#define _TRANSP_V6_H + +#include <net/checksum.h> + +/* + * IPv6 transport protocols + */ + +#ifdef __KERNEL__ + +extern struct proto rawv6_prot; +extern struct proto udpv6_prot; +extern struct proto tcpv6_prot; + +struct flowi; + +/* extention headers */ +extern void ipv6_rthdr_init(void); +extern void ipv6_frag_init(void); +extern void ipv6_nodata_init(void); +extern void ipv6_destopt_init(void); + +/* transport protocols */ +extern void rawv6_init(void); +extern void udpv6_init(void); +extern void tcpv6_init(void); + +extern int udpv6_connect(struct sock *sk, + struct sockaddr *uaddr, + int addr_len); + +extern int datagram_recv_ctl(struct sock *sk, + struct msghdr *msg, + struct sk_buff *skb); + +extern int datagram_send_ctl(struct msghdr *msg, + struct flowi *fl, + struct ipv6_txoptions *opt, + int *hlimit); + +#define LOOPBACK4_IPV6 __constant_htonl(0x7f000006) + +/* + * address family specific functions + */ +extern struct tcp_func ipv4_specific; + +extern int inet6_destroy_sock(struct sock *sk); + +#endif + +#endif diff --git a/include/net/udp.h b/include/net/udp.h new file mode 100644 index 000000000000..c496d10101db --- /dev/null +++ b/include/net/udp.h @@ -0,0 +1,99 @@ +/* + * INET An implementation of the TCP/IP protocol suite for the LINUX + * operating system. INET is implemented using the BSD Socket + * interface as the means of communication with the user level. + * + * Definitions for the UDP module. + * + * Version: @(#)udp.h 1.0.2 05/07/93 + * + * Authors: Ross Biro, <bir7@leland.Stanford.Edu> + * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> + * + * Fixes: + * Alan Cox : Turned on udp checksums. I don't want to + * chase 'memory corruption' bugs that aren't! + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#ifndef _UDP_H +#define _UDP_H + +#include <linux/udp.h> +#include <linux/ip.h> +#include <linux/list.h> +#include <net/sock.h> +#include <net/snmp.h> +#include <linux/seq_file.h> + +#define UDP_HTABLE_SIZE 128 + +/* udp.c: This needs to be shared by v4 and v6 because the lookup + * and hashing code needs to work with different AF's yet + * the port space is shared. + */ +extern struct hlist_head udp_hash[UDP_HTABLE_SIZE]; +extern rwlock_t udp_hash_lock; + +extern int udp_port_rover; + +static inline int udp_lport_inuse(u16 num) +{ + struct sock *sk; + struct hlist_node *node; + + sk_for_each(sk, node, &udp_hash[num & (UDP_HTABLE_SIZE - 1)]) + if (inet_sk(sk)->num == num) + return 1; + return 0; +} + +/* Note: this must match 'valbool' in sock_setsockopt */ +#define UDP_CSUM_NOXMIT 1 + +/* Used by SunRPC/xprt layer. */ +#define UDP_CSUM_NORCV 2 + +/* Default, as per the RFC, is to always do csums. */ +#define UDP_CSUM_DEFAULT 0 + +extern struct proto udp_prot; + + +extern void udp_err(struct sk_buff *, u32); + +extern int udp_sendmsg(struct kiocb *iocb, struct sock *sk, + struct msghdr *msg, size_t len); + +extern int udp_rcv(struct sk_buff *skb); +extern int udp_ioctl(struct sock *sk, int cmd, unsigned long arg); +extern int udp_disconnect(struct sock *sk, int flags); +extern unsigned int udp_poll(struct file *file, struct socket *sock, + poll_table *wait); + +DECLARE_SNMP_STAT(struct udp_mib, udp_statistics); +#define UDP_INC_STATS(field) SNMP_INC_STATS(udp_statistics, field) +#define UDP_INC_STATS_BH(field) SNMP_INC_STATS_BH(udp_statistics, field) +#define UDP_INC_STATS_USER(field) SNMP_INC_STATS_USER(udp_statistics, field) + +/* /proc */ +struct udp_seq_afinfo { + struct module *owner; + char *name; + sa_family_t family; + int (*seq_show) (struct seq_file *m, void *v); + struct file_operations *seq_fops; +}; + +struct udp_iter_state { + sa_family_t family; + int bucket; + struct seq_operations seq_ops; +}; + +extern int udp_proc_register(struct udp_seq_afinfo *afinfo); +extern void udp_proc_unregister(struct udp_seq_afinfo *afinfo); +#endif /* _UDP_H */ diff --git a/include/net/x25.h b/include/net/x25.h new file mode 100644 index 000000000000..7a1ba5bbb868 --- /dev/null +++ b/include/net/x25.h @@ -0,0 +1,273 @@ +/* + * Declarations of X.25 Packet Layer type objects. + * + * History + * nov/17/96 Jonathan Naylor Initial version. + * mar/20/00 Daniela Squassoni Disabling/enabling of facilities + * negotiation. + */ + +#ifndef _X25_H +#define _X25_H +#include <linux/x25.h> +#include <net/sock.h> + +#define X25_ADDR_LEN 16 + +#define X25_MAX_L2_LEN 18 /* 802.2 LLC */ + +#define X25_STD_MIN_LEN 3 +#define X25_EXT_MIN_LEN 4 + +#define X25_GFI_SEQ_MASK 0x30 +#define X25_GFI_STDSEQ 0x10 +#define X25_GFI_EXTSEQ 0x20 + +#define X25_Q_BIT 0x80 +#define X25_D_BIT 0x40 +#define X25_STD_M_BIT 0x10 +#define X25_EXT_M_BIT 0x01 + +#define X25_CALL_REQUEST 0x0B +#define X25_CALL_ACCEPTED 0x0F +#define X25_CLEAR_REQUEST 0x13 +#define X25_CLEAR_CONFIRMATION 0x17 +#define X25_DATA 0x00 +#define X25_INTERRUPT 0x23 +#define X25_INTERRUPT_CONFIRMATION 0x27 +#define X25_RR 0x01 +#define X25_RNR 0x05 +#define X25_REJ 0x09 +#define X25_RESET_REQUEST 0x1B +#define X25_RESET_CONFIRMATION 0x1F +#define X25_REGISTRATION_REQUEST 0xF3 +#define X25_REGISTRATION_CONFIRMATION 0xF7 +#define X25_RESTART_REQUEST 0xFB +#define X25_RESTART_CONFIRMATION 0xFF +#define X25_DIAGNOSTIC 0xF1 +#define X25_ILLEGAL 0xFD + +/* Define the various conditions that may exist */ + +#define X25_COND_ACK_PENDING 0x01 +#define X25_COND_OWN_RX_BUSY 0x02 +#define X25_COND_PEER_RX_BUSY 0x04 + +/* Define Link State constants. */ +enum { + X25_STATE_0, /* Ready */ + X25_STATE_1, /* Awaiting Call Accepted */ + X25_STATE_2, /* Awaiting Clear Confirmation */ + X25_STATE_3, /* Data Transfer */ + X25_STATE_4 /* Awaiting Reset Confirmation */ +}; + +enum { + X25_LINK_STATE_0, + X25_LINK_STATE_1, + X25_LINK_STATE_2, + X25_LINK_STATE_3 +}; + +#define X25_DEFAULT_T20 (180 * HZ) /* Default T20 value */ +#define X25_DEFAULT_T21 (200 * HZ) /* Default T21 value */ +#define X25_DEFAULT_T22 (180 * HZ) /* Default T22 value */ +#define X25_DEFAULT_T23 (180 * HZ) /* Default T23 value */ +#define X25_DEFAULT_T2 (3 * HZ) /* Default ack holdback value */ + +#define X25_DEFAULT_WINDOW_SIZE 2 /* Default Window Size */ +#define X25_DEFAULT_PACKET_SIZE X25_PS128 /* Default Packet Size */ +#define X25_DEFAULT_THROUGHPUT 0x0A /* Deafult Throughput */ +#define X25_DEFAULT_REVERSE 0x00 /* Default Reverse Charging */ + +#define X25_SMODULUS 8 +#define X25_EMODULUS 128 + +/* + * X.25 Facilities constants. + */ + +#define X25_FAC_CLASS_MASK 0xC0 + +#define X25_FAC_CLASS_A 0x00 +#define X25_FAC_CLASS_B 0x40 +#define X25_FAC_CLASS_C 0x80 +#define X25_FAC_CLASS_D 0xC0 + +#define X25_FAC_REVERSE 0x01 +#define X25_FAC_THROUGHPUT 0x02 +#define X25_FAC_PACKET_SIZE 0x42 +#define X25_FAC_WINDOW_SIZE 0x43 + +#define X25_MAX_FAC_LEN 20 /* Plenty to spare */ +#define X25_MAX_CUD_LEN 128 + +/** + * struct x25_route - x25 routing entry + * @node - entry in x25_list_lock + * @address - Start of address range + * @sigdigits - Number of sig digits + * @dev - More than one for MLP + * @refcnt - reference counter + */ +struct x25_route { + struct list_head node; + struct x25_address address; + unsigned int sigdigits; + struct net_device *dev; + atomic_t refcnt; +}; + +struct x25_neigh { + struct list_head node; + struct net_device *dev; + unsigned int state; + unsigned int extended; + struct sk_buff_head queue; + unsigned long t20; + struct timer_list t20timer; + unsigned long global_facil_mask; + atomic_t refcnt; +}; + +struct x25_sock { + struct sock sk; + struct x25_address source_addr, dest_addr; + struct x25_neigh *neighbour; + unsigned int lci; + unsigned char state, condition, qbitincl, intflag; + unsigned short vs, vr, va, vl; + unsigned long t2, t21, t22, t23; + unsigned short fraglen; + struct sk_buff_head ack_queue; + struct sk_buff_head fragment_queue; + struct sk_buff_head interrupt_in_queue; + struct sk_buff_head interrupt_out_queue; + struct timer_list timer; + struct x25_causediag causediag; + struct x25_facilities facilities; + struct x25_calluserdata calluserdata; + unsigned long vc_facil_mask; /* inc_call facilities mask */ +}; + +static inline struct x25_sock *x25_sk(const struct sock *sk) +{ + return (struct x25_sock *)sk; +} + +/* af_x25.c */ +extern int sysctl_x25_restart_request_timeout; +extern int sysctl_x25_call_request_timeout; +extern int sysctl_x25_reset_request_timeout; +extern int sysctl_x25_clear_request_timeout; +extern int sysctl_x25_ack_holdback_timeout; + +extern int x25_addr_ntoa(unsigned char *, struct x25_address *, + struct x25_address *); +extern int x25_addr_aton(unsigned char *, struct x25_address *, + struct x25_address *); +extern struct sock *x25_find_socket(unsigned int, struct x25_neigh *); +extern void x25_destroy_socket(struct sock *); +extern int x25_rx_call_request(struct sk_buff *, struct x25_neigh *, unsigned int); +extern void x25_kill_by_neigh(struct x25_neigh *); + +/* x25_dev.c */ +extern void x25_send_frame(struct sk_buff *, struct x25_neigh *); +extern int x25_lapb_receive_frame(struct sk_buff *, struct net_device *, struct packet_type *); +extern void x25_establish_link(struct x25_neigh *); +extern void x25_terminate_link(struct x25_neigh *); + +/* x25_facilities.c */ +extern int x25_parse_facilities(struct sk_buff *, struct x25_facilities *, unsigned long *); +extern int x25_create_facilities(unsigned char *, struct x25_facilities *, unsigned long); +extern int x25_negotiate_facilities(struct sk_buff *, struct sock *, struct x25_facilities *); +extern void x25_limit_facilities(struct x25_facilities *, struct x25_neigh *); + +/* x25_in.c */ +extern int x25_process_rx_frame(struct sock *, struct sk_buff *); +extern int x25_backlog_rcv(struct sock *, struct sk_buff *); + +/* x25_link.c */ +extern void x25_link_control(struct sk_buff *, struct x25_neigh *, unsigned short); +extern void x25_link_device_up(struct net_device *); +extern void x25_link_device_down(struct net_device *); +extern void x25_link_established(struct x25_neigh *); +extern void x25_link_terminated(struct x25_neigh *); +extern void x25_transmit_clear_request(struct x25_neigh *, unsigned int, unsigned char); +extern void x25_transmit_link(struct sk_buff *, struct x25_neigh *); +extern int x25_subscr_ioctl(unsigned int, void __user *); +extern struct x25_neigh *x25_get_neigh(struct net_device *); +extern void x25_link_free(void); + +/* x25_neigh.c */ +static __inline__ void x25_neigh_hold(struct x25_neigh *nb) +{ + atomic_inc(&nb->refcnt); +} + +static __inline__ void x25_neigh_put(struct x25_neigh *nb) +{ + if (atomic_dec_and_test(&nb->refcnt)) + kfree(nb); +} + +/* x25_out.c */ +extern int x25_output(struct sock *, struct sk_buff *); +extern void x25_kick(struct sock *); +extern void x25_enquiry_response(struct sock *); + +/* x25_route.c */ +extern struct x25_route *x25_get_route(struct x25_address *addr); +extern struct net_device *x25_dev_get(char *); +extern void x25_route_device_down(struct net_device *dev); +extern int x25_route_ioctl(unsigned int, void __user *); +extern void x25_route_free(void); + +static __inline__ void x25_route_hold(struct x25_route *rt) +{ + atomic_inc(&rt->refcnt); +} + +static __inline__ void x25_route_put(struct x25_route *rt) +{ + if (atomic_dec_and_test(&rt->refcnt)) + kfree(rt); +} + +/* x25_subr.c */ +extern void x25_clear_queues(struct sock *); +extern void x25_frames_acked(struct sock *, unsigned short); +extern void x25_requeue_frames(struct sock *); +extern int x25_validate_nr(struct sock *, unsigned short); +extern void x25_write_internal(struct sock *, int); +extern int x25_decode(struct sock *, struct sk_buff *, int *, int *, int *, int *, int *); +extern void x25_disconnect(struct sock *, int, unsigned char, unsigned char); +extern int x25_check_calluserdata(struct x25_calluserdata *,struct x25_calluserdata *); + +/* x25_timer.c */ +extern void x25_start_heartbeat(struct sock *); +extern void x25_start_t2timer(struct sock *); +extern void x25_start_t21timer(struct sock *); +extern void x25_start_t22timer(struct sock *); +extern void x25_start_t23timer(struct sock *); +extern void x25_stop_heartbeat(struct sock *); +extern void x25_stop_timer(struct sock *); +extern unsigned long x25_display_timer(struct sock *); +extern void x25_check_rbuf(struct sock *); + +/* sysctl_net_x25.c */ +extern void x25_register_sysctl(void); +extern void x25_unregister_sysctl(void); +struct x25_skb_cb { + unsigned flags; +}; +#define X25_SKB_CB(s) ((struct x25_skb_cb *) ((s)->cb)) + +extern struct hlist_head x25_list; +extern rwlock_t x25_list_lock; +extern struct list_head x25_route_list; +extern rwlock_t x25_route_list_lock; + +extern int x25_proc_init(void); +extern void x25_proc_exit(void); +#endif diff --git a/include/net/x25device.h b/include/net/x25device.h new file mode 100644 index 000000000000..cf36a20ea3c5 --- /dev/null +++ b/include/net/x25device.h @@ -0,0 +1,17 @@ +#ifndef _X25DEVICE_H +#define _X25DEVICE_H + +#include <linux/if_ether.h> +#include <linux/if_packet.h> +#include <linux/skbuff.h> + +static inline unsigned short x25_type_trans(struct sk_buff *skb, + struct net_device *dev) +{ + skb->mac.raw = skb->data; + skb->input_dev = skb->dev = dev; + skb->pkt_type = PACKET_HOST; + + return htons(ETH_P_X25); +} +#endif diff --git a/include/net/xfrm.h b/include/net/xfrm.h new file mode 100644 index 000000000000..73e9a8ca3d3b --- /dev/null +++ b/include/net/xfrm.h @@ -0,0 +1,905 @@ +#ifndef _NET_XFRM_H +#define _NET_XFRM_H + +#include <linux/xfrm.h> +#include <linux/spinlock.h> +#include <linux/list.h> +#include <linux/skbuff.h> +#include <linux/netdevice.h> +#include <linux/crypto.h> +#include <linux/pfkeyv2.h> +#include <linux/in6.h> + +#include <net/sock.h> +#include <net/dst.h> +#include <net/route.h> +#include <net/ipv6.h> +#include <net/ip6_fib.h> + +#define XFRM_ALIGN8(len) (((len) + 7) & ~7) + +extern struct semaphore xfrm_cfg_sem; + +/* Organization of SPD aka "XFRM rules" + ------------------------------------ + + Basic objects: + - policy rule, struct xfrm_policy (=SPD entry) + - bundle of transformations, struct dst_entry == struct xfrm_dst (=SA bundle) + - instance of a transformer, struct xfrm_state (=SA) + - template to clone xfrm_state, struct xfrm_tmpl + + SPD is plain linear list of xfrm_policy rules, ordered by priority. + (To be compatible with existing pfkeyv2 implementations, + many rules with priority of 0x7fffffff are allowed to exist and + such rules are ordered in an unpredictable way, thanks to bsd folks.) + + Lookup is plain linear search until the first match with selector. + + If "action" is "block", then we prohibit the flow, otherwise: + if "xfrms_nr" is zero, the flow passes untransformed. Otherwise, + policy entry has list of up to XFRM_MAX_DEPTH transformations, + described by templates xfrm_tmpl. Each template is resolved + to a complete xfrm_state (see below) and we pack bundle of transformations + to a dst_entry returned to requestor. + + dst -. xfrm .-> xfrm_state #1 + |---. child .-> dst -. xfrm .-> xfrm_state #2 + |---. child .-> dst -. xfrm .-> xfrm_state #3 + |---. child .-> NULL + + Bundles are cached at xrfm_policy struct (field ->bundles). + + + Resolution of xrfm_tmpl + ----------------------- + Template contains: + 1. ->mode Mode: transport or tunnel + 2. ->id.proto Protocol: AH/ESP/IPCOMP + 3. ->id.daddr Remote tunnel endpoint, ignored for transport mode. + Q: allow to resolve security gateway? + 4. ->id.spi If not zero, static SPI. + 5. ->saddr Local tunnel endpoint, ignored for transport mode. + 6. ->algos List of allowed algos. Plain bitmask now. + Q: ealgos, aalgos, calgos. What a mess... + 7. ->share Sharing mode. + Q: how to implement private sharing mode? To add struct sock* to + flow id? + + Having this template we search through SAD searching for entries + with appropriate mode/proto/algo, permitted by selector. + If no appropriate entry found, it is requested from key manager. + + PROBLEMS: + Q: How to find all the bundles referring to a physical path for + PMTU discovery? Seems, dst should contain list of all parents... + and enter to infinite locking hierarchy disaster. + No! It is easier, we will not search for them, let them find us. + We add genid to each dst plus pointer to genid of raw IP route, + pmtu disc will update pmtu on raw IP route and increase its genid. + dst_check() will see this for top level and trigger resyncing + metrics. Plus, it will be made via sk->sk_dst_cache. Solved. + */ + +/* Full description of state of transformer. */ +struct xfrm_state +{ + /* Note: bydst is re-used during gc */ + struct list_head bydst; + struct list_head byspi; + + atomic_t refcnt; + spinlock_t lock; + + struct xfrm_id id; + struct xfrm_selector sel; + + /* Key manger bits */ + struct { + u8 state; + u8 dying; + u32 seq; + } km; + + /* Parameters of this state. */ + struct { + u32 reqid; + u8 mode; + u8 replay_window; + u8 aalgo, ealgo, calgo; + u8 flags; + u16 family; + xfrm_address_t saddr; + int header_len; + int trailer_len; + } props; + + struct xfrm_lifetime_cfg lft; + + /* Data for transformer */ + struct xfrm_algo *aalg; + struct xfrm_algo *ealg; + struct xfrm_algo *calg; + + /* Data for encapsulator */ + struct xfrm_encap_tmpl *encap; + + /* IPComp needs an IPIP tunnel for handling uncompressed packets */ + struct xfrm_state *tunnel; + + /* If a tunnel, number of users + 1 */ + atomic_t tunnel_users; + + /* State for replay detection */ + struct xfrm_replay_state replay; + + /* Statistics */ + struct xfrm_stats stats; + + struct xfrm_lifetime_cur curlft; + struct timer_list timer; + + /* Reference to data common to all the instances of this + * transformer. */ + struct xfrm_type *type; + + /* Private data of this transformer, format is opaque, + * interpreted by xfrm_type methods. */ + void *data; +}; + +enum { + XFRM_STATE_VOID, + XFRM_STATE_ACQ, + XFRM_STATE_VALID, + XFRM_STATE_ERROR, + XFRM_STATE_EXPIRED, + XFRM_STATE_DEAD +}; + +struct xfrm_type; +struct xfrm_dst; +struct xfrm_policy_afinfo { + unsigned short family; + rwlock_t lock; + struct xfrm_type_map *type_map; + struct dst_ops *dst_ops; + void (*garbage_collect)(void); + int (*dst_lookup)(struct xfrm_dst **dst, struct flowi *fl); + struct dst_entry *(*find_bundle)(struct flowi *fl, struct xfrm_policy *policy); + int (*bundle_create)(struct xfrm_policy *policy, + struct xfrm_state **xfrm, + int nx, + struct flowi *fl, + struct dst_entry **dst_p); + void (*decode_session)(struct sk_buff *skb, + struct flowi *fl); +}; + +extern int xfrm_policy_register_afinfo(struct xfrm_policy_afinfo *afinfo); +extern int xfrm_policy_unregister_afinfo(struct xfrm_policy_afinfo *afinfo); + +#define XFRM_ACQ_EXPIRES 30 + +struct xfrm_tmpl; +struct xfrm_state_afinfo { + unsigned short family; + rwlock_t lock; + struct list_head *state_bydst; + struct list_head *state_byspi; + void (*init_tempsel)(struct xfrm_state *x, struct flowi *fl, + struct xfrm_tmpl *tmpl, + xfrm_address_t *daddr, xfrm_address_t *saddr); + struct xfrm_state *(*state_lookup)(xfrm_address_t *daddr, u32 spi, u8 proto); + struct xfrm_state *(*find_acq)(u8 mode, u32 reqid, u8 proto, + xfrm_address_t *daddr, xfrm_address_t *saddr, + int create); +}; + +extern int xfrm_state_register_afinfo(struct xfrm_state_afinfo *afinfo); +extern int xfrm_state_unregister_afinfo(struct xfrm_state_afinfo *afinfo); + +extern void xfrm_state_delete_tunnel(struct xfrm_state *x); + +struct xfrm_decap_state; +struct xfrm_type +{ + char *description; + struct module *owner; + __u8 proto; + + int (*init_state)(struct xfrm_state *x, void *args); + void (*destructor)(struct xfrm_state *); + int (*input)(struct xfrm_state *, struct xfrm_decap_state *, struct sk_buff *skb); + int (*post_input)(struct xfrm_state *, struct xfrm_decap_state *, struct sk_buff *skb); + int (*output)(struct xfrm_state *, struct sk_buff *pskb); + /* Estimate maximal size of result of transformation of a dgram */ + u32 (*get_max_size)(struct xfrm_state *, int size); +}; + +struct xfrm_type_map { + rwlock_t lock; + struct xfrm_type *map[256]; +}; + +extern int xfrm_register_type(struct xfrm_type *type, unsigned short family); +extern int xfrm_unregister_type(struct xfrm_type *type, unsigned short family); +extern struct xfrm_type *xfrm_get_type(u8 proto, unsigned short family); +extern void xfrm_put_type(struct xfrm_type *type); + +struct xfrm_tmpl +{ +/* id in template is interpreted as: + * daddr - destination of tunnel, may be zero for transport mode. + * spi - zero to acquire spi. Not zero if spi is static, then + * daddr must be fixed too. + * proto - AH/ESP/IPCOMP + */ + struct xfrm_id id; + +/* Source address of tunnel. Ignored, if it is not a tunnel. */ + xfrm_address_t saddr; + + __u32 reqid; + +/* Mode: transport/tunnel */ + __u8 mode; + +/* Sharing mode: unique, this session only, this user only etc. */ + __u8 share; + +/* May skip this transfomration if no SA is found */ + __u8 optional; + +/* Bit mask of algos allowed for acquisition */ + __u32 aalgos; + __u32 ealgos; + __u32 calgos; +}; + +#define XFRM_MAX_DEPTH 4 + +struct xfrm_policy +{ + struct xfrm_policy *next; + struct list_head list; + + /* This lock only affects elements except for entry. */ + rwlock_t lock; + atomic_t refcnt; + struct timer_list timer; + + u32 priority; + u32 index; + struct xfrm_selector selector; + struct xfrm_lifetime_cfg lft; + struct xfrm_lifetime_cur curlft; + struct dst_entry *bundles; + __u16 family; + __u8 action; + __u8 flags; + __u8 dead; + __u8 xfrm_nr; + struct xfrm_tmpl xfrm_vec[XFRM_MAX_DEPTH]; +}; + +#define XFRM_KM_TIMEOUT 30 + +struct xfrm_mgr +{ + struct list_head list; + char *id; + int (*notify)(struct xfrm_state *x, int event); + int (*acquire)(struct xfrm_state *x, struct xfrm_tmpl *, struct xfrm_policy *xp, int dir); + struct xfrm_policy *(*compile_policy)(u16 family, int opt, u8 *data, int len, int *dir); + int (*new_mapping)(struct xfrm_state *x, xfrm_address_t *ipaddr, u16 sport); + int (*notify_policy)(struct xfrm_policy *x, int dir, int event); +}; + +extern int xfrm_register_km(struct xfrm_mgr *km); +extern int xfrm_unregister_km(struct xfrm_mgr *km); + + +extern struct xfrm_policy *xfrm_policy_list[XFRM_POLICY_MAX*2]; + +static inline void xfrm_pol_hold(struct xfrm_policy *policy) +{ + if (likely(policy != NULL)) + atomic_inc(&policy->refcnt); +} + +extern void __xfrm_policy_destroy(struct xfrm_policy *policy); + +static inline void xfrm_pol_put(struct xfrm_policy *policy) +{ + if (atomic_dec_and_test(&policy->refcnt)) + __xfrm_policy_destroy(policy); +} + +#define XFRM_DST_HSIZE 1024 + +static __inline__ +unsigned __xfrm4_dst_hash(xfrm_address_t *addr) +{ + unsigned h; + h = ntohl(addr->a4); + h = (h ^ (h>>16)) % XFRM_DST_HSIZE; + return h; +} + +static __inline__ +unsigned __xfrm6_dst_hash(xfrm_address_t *addr) +{ + unsigned h; + h = ntohl(addr->a6[2]^addr->a6[3]); + h = (h ^ (h>>16)) % XFRM_DST_HSIZE; + return h; +} + +static __inline__ +unsigned xfrm_dst_hash(xfrm_address_t *addr, unsigned short family) +{ + switch (family) { + case AF_INET: + return __xfrm4_dst_hash(addr); + case AF_INET6: + return __xfrm6_dst_hash(addr); + } + return 0; +} + +static __inline__ +unsigned __xfrm4_spi_hash(xfrm_address_t *addr, u32 spi, u8 proto) +{ + unsigned h; + h = ntohl(addr->a4^spi^proto); + h = (h ^ (h>>10) ^ (h>>20)) % XFRM_DST_HSIZE; + return h; +} + +static __inline__ +unsigned __xfrm6_spi_hash(xfrm_address_t *addr, u32 spi, u8 proto) +{ + unsigned h; + h = ntohl(addr->a6[2]^addr->a6[3]^spi^proto); + h = (h ^ (h>>10) ^ (h>>20)) % XFRM_DST_HSIZE; + return h; +} + +static __inline__ +unsigned xfrm_spi_hash(xfrm_address_t *addr, u32 spi, u8 proto, unsigned short family) +{ + switch (family) { + case AF_INET: + return __xfrm4_spi_hash(addr, spi, proto); + case AF_INET6: + return __xfrm6_spi_hash(addr, spi, proto); + } + return 0; /*XXX*/ +} + +extern void __xfrm_state_destroy(struct xfrm_state *); + +static inline void xfrm_state_put(struct xfrm_state *x) +{ + if (atomic_dec_and_test(&x->refcnt)) + __xfrm_state_destroy(x); +} + +static inline void xfrm_state_hold(struct xfrm_state *x) +{ + atomic_inc(&x->refcnt); +} + +static __inline__ int addr_match(void *token1, void *token2, int prefixlen) +{ + __u32 *a1 = token1; + __u32 *a2 = token2; + int pdw; + int pbi; + + pdw = prefixlen >> 5; /* num of whole __u32 in prefix */ + pbi = prefixlen & 0x1f; /* num of bits in incomplete u32 in prefix */ + + if (pdw) + if (memcmp(a1, a2, pdw << 2)) + return 0; + + if (pbi) { + __u32 mask; + + mask = htonl((0xffffffff) << (32 - pbi)); + + if ((a1[pdw] ^ a2[pdw]) & mask) + return 0; + } + + return 1; +} + +static __inline__ +u16 xfrm_flowi_sport(struct flowi *fl) +{ + u16 port; + switch(fl->proto) { + case IPPROTO_TCP: + case IPPROTO_UDP: + case IPPROTO_SCTP: + port = fl->fl_ip_sport; + break; + case IPPROTO_ICMP: + case IPPROTO_ICMPV6: + port = htons(fl->fl_icmp_type); + break; + default: + port = 0; /*XXX*/ + } + return port; +} + +static __inline__ +u16 xfrm_flowi_dport(struct flowi *fl) +{ + u16 port; + switch(fl->proto) { + case IPPROTO_TCP: + case IPPROTO_UDP: + case IPPROTO_SCTP: + port = fl->fl_ip_dport; + break; + case IPPROTO_ICMP: + case IPPROTO_ICMPV6: + port = htons(fl->fl_icmp_code); + break; + default: + port = 0; /*XXX*/ + } + return port; +} + +static inline int +__xfrm4_selector_match(struct xfrm_selector *sel, struct flowi *fl) +{ + return addr_match(&fl->fl4_dst, &sel->daddr, sel->prefixlen_d) && + addr_match(&fl->fl4_src, &sel->saddr, sel->prefixlen_s) && + !((xfrm_flowi_dport(fl) ^ sel->dport) & sel->dport_mask) && + !((xfrm_flowi_sport(fl) ^ sel->sport) & sel->sport_mask) && + (fl->proto == sel->proto || !sel->proto) && + (fl->oif == sel->ifindex || !sel->ifindex); +} + +static inline int +__xfrm6_selector_match(struct xfrm_selector *sel, struct flowi *fl) +{ + return addr_match(&fl->fl6_dst, &sel->daddr, sel->prefixlen_d) && + addr_match(&fl->fl6_src, &sel->saddr, sel->prefixlen_s) && + !((xfrm_flowi_dport(fl) ^ sel->dport) & sel->dport_mask) && + !((xfrm_flowi_sport(fl) ^ sel->sport) & sel->sport_mask) && + (fl->proto == sel->proto || !sel->proto) && + (fl->oif == sel->ifindex || !sel->ifindex); +} + +static inline int +xfrm_selector_match(struct xfrm_selector *sel, struct flowi *fl, + unsigned short family) +{ + switch (family) { + case AF_INET: + return __xfrm4_selector_match(sel, fl); + case AF_INET6: + return __xfrm6_selector_match(sel, fl); + } + return 0; +} + +/* A struct encoding bundle of transformations to apply to some set of flow. + * + * dst->child points to the next element of bundle. + * dst->xfrm points to an instanse of transformer. + * + * Due to unfortunate limitations of current routing cache, which we + * have no time to fix, it mirrors struct rtable and bound to the same + * routing key, including saddr,daddr. However, we can have many of + * bundles differing by session id. All the bundles grow from a parent + * policy rule. + */ +struct xfrm_dst +{ + union { + struct xfrm_dst *next; + struct dst_entry dst; + struct rtable rt; + struct rt6_info rt6; + } u; + struct dst_entry *route; + u32 route_mtu_cached; + u32 child_mtu_cached; +}; + +/* Decapsulation state, used by the input to store data during + * decapsulation procedure, to be used later (during the policy + * check + */ +struct xfrm_decap_state { + char decap_data[20]; + __u16 decap_type; +}; + +struct sec_decap_state { + struct xfrm_state *xvec; + struct xfrm_decap_state decap; +}; + +struct sec_path +{ + atomic_t refcnt; + int len; + struct sec_decap_state x[XFRM_MAX_DEPTH]; +}; + +static inline struct sec_path * +secpath_get(struct sec_path *sp) +{ + if (sp) + atomic_inc(&sp->refcnt); + return sp; +} + +extern void __secpath_destroy(struct sec_path *sp); + +static inline void +secpath_put(struct sec_path *sp) +{ + if (sp && atomic_dec_and_test(&sp->refcnt)) + __secpath_destroy(sp); +} + +extern struct sec_path *secpath_dup(struct sec_path *src); + +static inline void +secpath_reset(struct sk_buff *skb) +{ +#ifdef CONFIG_XFRM + secpath_put(skb->sp); + skb->sp = NULL; +#endif +} + +static inline int +__xfrm4_state_addr_cmp(struct xfrm_tmpl *tmpl, struct xfrm_state *x) +{ + return (tmpl->saddr.a4 && + tmpl->saddr.a4 != x->props.saddr.a4); +} + +static inline int +__xfrm6_state_addr_cmp(struct xfrm_tmpl *tmpl, struct xfrm_state *x) +{ + return (!ipv6_addr_any((struct in6_addr*)&tmpl->saddr) && + ipv6_addr_cmp((struct in6_addr *)&tmpl->saddr, (struct in6_addr*)&x->props.saddr)); +} + +static inline int +xfrm_state_addr_cmp(struct xfrm_tmpl *tmpl, struct xfrm_state *x, unsigned short family) +{ + switch (family) { + case AF_INET: + return __xfrm4_state_addr_cmp(tmpl, x); + case AF_INET6: + return __xfrm6_state_addr_cmp(tmpl, x); + } + return !0; +} + +#ifdef CONFIG_XFRM + +extern int __xfrm_policy_check(struct sock *, int dir, struct sk_buff *skb, unsigned short family); + +static inline int xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb, unsigned short family) +{ + if (sk && sk->sk_policy[XFRM_POLICY_IN]) + return __xfrm_policy_check(sk, dir, skb, family); + + return (!xfrm_policy_list[dir] && !skb->sp) || + (skb->dst->flags & DST_NOPOLICY) || + __xfrm_policy_check(sk, dir, skb, family); +} + +static inline int xfrm4_policy_check(struct sock *sk, int dir, struct sk_buff *skb) +{ + return xfrm_policy_check(sk, dir, skb, AF_INET); +} + +static inline int xfrm6_policy_check(struct sock *sk, int dir, struct sk_buff *skb) +{ + return xfrm_policy_check(sk, dir, skb, AF_INET6); +} + + +extern int __xfrm_route_forward(struct sk_buff *skb, unsigned short family); + +static inline int xfrm_route_forward(struct sk_buff *skb, unsigned short family) +{ + return !xfrm_policy_list[XFRM_POLICY_OUT] || + (skb->dst->flags & DST_NOXFRM) || + __xfrm_route_forward(skb, family); +} + +static inline int xfrm4_route_forward(struct sk_buff *skb) +{ + return xfrm_route_forward(skb, AF_INET); +} + +static inline int xfrm6_route_forward(struct sk_buff *skb) +{ + return xfrm_route_forward(skb, AF_INET6); +} + +extern int __xfrm_sk_clone_policy(struct sock *sk); + +static inline int xfrm_sk_clone_policy(struct sock *sk) +{ + if (unlikely(sk->sk_policy[0] || sk->sk_policy[1])) + return __xfrm_sk_clone_policy(sk); + return 0; +} + +extern void xfrm_policy_delete(struct xfrm_policy *pol, int dir); + +static inline void xfrm_sk_free_policy(struct sock *sk) +{ + if (unlikely(sk->sk_policy[0] != NULL)) { + xfrm_policy_delete(sk->sk_policy[0], XFRM_POLICY_MAX); + sk->sk_policy[0] = NULL; + } + if (unlikely(sk->sk_policy[1] != NULL)) { + xfrm_policy_delete(sk->sk_policy[1], XFRM_POLICY_MAX+1); + sk->sk_policy[1] = NULL; + } +} + +#else + +static inline void xfrm_sk_free_policy(struct sock *sk) {} +static inline int xfrm_sk_clone_policy(struct sock *sk) { return 0; } +static inline int xfrm6_route_forward(struct sk_buff *skb) { return 1; } +static inline int xfrm4_route_forward(struct sk_buff *skb) { return 1; } +static inline int xfrm6_policy_check(struct sock *sk, int dir, struct sk_buff *skb) +{ + return 1; +} +static inline int xfrm4_policy_check(struct sock *sk, int dir, struct sk_buff *skb) +{ + return 1; +} +static inline int xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb, unsigned short family) +{ + return 1; +} +#endif + +static __inline__ +xfrm_address_t *xfrm_flowi_daddr(struct flowi *fl, unsigned short family) +{ + switch (family){ + case AF_INET: + return (xfrm_address_t *)&fl->fl4_dst; + case AF_INET6: + return (xfrm_address_t *)&fl->fl6_dst; + } + return NULL; +} + +static __inline__ +xfrm_address_t *xfrm_flowi_saddr(struct flowi *fl, unsigned short family) +{ + switch (family){ + case AF_INET: + return (xfrm_address_t *)&fl->fl4_src; + case AF_INET6: + return (xfrm_address_t *)&fl->fl6_src; + } + return NULL; +} + +static __inline__ int +__xfrm4_state_addr_check(struct xfrm_state *x, + xfrm_address_t *daddr, xfrm_address_t *saddr) +{ + if (daddr->a4 == x->id.daddr.a4 && + (saddr->a4 == x->props.saddr.a4 || !saddr->a4 || !x->props.saddr.a4)) + return 1; + return 0; +} + +static __inline__ int +__xfrm6_state_addr_check(struct xfrm_state *x, + xfrm_address_t *daddr, xfrm_address_t *saddr) +{ + if (!ipv6_addr_cmp((struct in6_addr *)daddr, (struct in6_addr *)&x->id.daddr) && + (!ipv6_addr_cmp((struct in6_addr *)saddr, (struct in6_addr *)&x->props.saddr)|| + ipv6_addr_any((struct in6_addr *)saddr) || + ipv6_addr_any((struct in6_addr *)&x->props.saddr))) + return 1; + return 0; +} + +static __inline__ int +xfrm_state_addr_check(struct xfrm_state *x, + xfrm_address_t *daddr, xfrm_address_t *saddr, + unsigned short family) +{ + switch (family) { + case AF_INET: + return __xfrm4_state_addr_check(x, daddr, saddr); + case AF_INET6: + return __xfrm6_state_addr_check(x, daddr, saddr); + } + return 0; +} + +static inline int xfrm_state_kern(struct xfrm_state *x) +{ + return atomic_read(&x->tunnel_users); +} + +/* + * xfrm algorithm information + */ +struct xfrm_algo_auth_info { + u16 icv_truncbits; + u16 icv_fullbits; +}; + +struct xfrm_algo_encr_info { + u16 blockbits; + u16 defkeybits; +}; + +struct xfrm_algo_comp_info { + u16 threshold; +}; + +struct xfrm_algo_desc { + char *name; + u8 available:1; + union { + struct xfrm_algo_auth_info auth; + struct xfrm_algo_encr_info encr; + struct xfrm_algo_comp_info comp; + } uinfo; + struct sadb_alg desc; +}; + +/* XFRM tunnel handlers. */ +struct xfrm_tunnel { + int (*handler)(struct sk_buff *skb); + void (*err_handler)(struct sk_buff *skb, void *info); +}; + +struct xfrm6_tunnel { + int (*handler)(struct sk_buff **pskb, unsigned int *nhoffp); + void (*err_handler)(struct sk_buff *skb, struct inet6_skb_parm *opt, + int type, int code, int offset, __u32 info); +}; + +extern void xfrm_init(void); +extern void xfrm4_init(void); +extern void xfrm6_init(void); +extern void xfrm6_fini(void); +extern void xfrm_state_init(void); +extern void xfrm4_state_init(void); +extern void xfrm4_state_fini(void); +extern void xfrm6_state_init(void); +extern void xfrm6_state_fini(void); + +extern int xfrm_state_walk(u8 proto, int (*func)(struct xfrm_state *, int, void*), void *); +extern struct xfrm_state *xfrm_state_alloc(void); +extern struct xfrm_state *xfrm_state_find(xfrm_address_t *daddr, xfrm_address_t *saddr, + struct flowi *fl, struct xfrm_tmpl *tmpl, + struct xfrm_policy *pol, int *err, + unsigned short family); +extern int xfrm_state_check_expire(struct xfrm_state *x); +extern void xfrm_state_insert(struct xfrm_state *x); +extern int xfrm_state_add(struct xfrm_state *x); +extern int xfrm_state_update(struct xfrm_state *x); +extern struct xfrm_state *xfrm_state_lookup(xfrm_address_t *daddr, u32 spi, u8 proto, unsigned short family); +extern struct xfrm_state *xfrm_find_acq_byseq(u32 seq); +extern void xfrm_state_delete(struct xfrm_state *x); +extern void xfrm_state_flush(u8 proto); +extern int xfrm_replay_check(struct xfrm_state *x, u32 seq); +extern void xfrm_replay_advance(struct xfrm_state *x, u32 seq); +extern int xfrm_state_check(struct xfrm_state *x, struct sk_buff *skb); +extern int xfrm_state_mtu(struct xfrm_state *x, int mtu); +extern int xfrm4_rcv(struct sk_buff *skb); +extern int xfrm4_output(struct sk_buff *skb); +extern int xfrm4_tunnel_register(struct xfrm_tunnel *handler); +extern int xfrm4_tunnel_deregister(struct xfrm_tunnel *handler); +extern int xfrm6_rcv_spi(struct sk_buff **pskb, unsigned int *nhoffp, u32 spi); +extern int xfrm6_rcv(struct sk_buff **pskb, unsigned int *nhoffp); +extern int xfrm6_tunnel_register(struct xfrm6_tunnel *handler); +extern int xfrm6_tunnel_deregister(struct xfrm6_tunnel *handler); +extern u32 xfrm6_tunnel_alloc_spi(xfrm_address_t *saddr); +extern void xfrm6_tunnel_free_spi(xfrm_address_t *saddr); +extern u32 xfrm6_tunnel_spi_lookup(xfrm_address_t *saddr); +extern int xfrm6_output(struct sk_buff *skb); + +#ifdef CONFIG_XFRM +extern int xfrm4_rcv_encap(struct sk_buff *skb, __u16 encap_type); +extern int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen); +extern int xfrm_dst_lookup(struct xfrm_dst **dst, struct flowi *fl, unsigned short family); +#else +static inline int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen) +{ + return -ENOPROTOOPT; +} + +static inline int xfrm4_rcv_encap(struct sk_buff *skb, __u16 encap_type) +{ + /* should not happen */ + kfree_skb(skb); + return 0; +} +static inline int xfrm_dst_lookup(struct xfrm_dst **dst, struct flowi *fl, unsigned short family) +{ + return -EINVAL; +} +#endif + +struct xfrm_policy *xfrm_policy_alloc(int gfp); +extern int xfrm_policy_walk(int (*func)(struct xfrm_policy *, int, int, void*), void *); +int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl); +struct xfrm_policy *xfrm_policy_bysel(int dir, struct xfrm_selector *sel, + int delete); +struct xfrm_policy *xfrm_policy_byid(int dir, u32 id, int delete); +void xfrm_policy_flush(void); +u32 xfrm_get_acqseq(void); +void xfrm_alloc_spi(struct xfrm_state *x, u32 minspi, u32 maxspi); +struct xfrm_state * xfrm_find_acq(u8 mode, u32 reqid, u8 proto, + xfrm_address_t *daddr, xfrm_address_t *saddr, + int create, unsigned short family); +extern void xfrm_policy_flush(void); +extern int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol); +extern int xfrm_flush_bundles(void); +extern int xfrm_bundle_ok(struct xfrm_dst *xdst, struct flowi *fl, int family); +extern void xfrm_init_pmtu(struct dst_entry *dst); + +extern wait_queue_head_t km_waitq; +extern int km_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr, u16 sport); +extern void km_policy_expired(struct xfrm_policy *pol, int dir, int hard); + +extern void xfrm_input_init(void); +extern int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, u32 *spi, u32 *seq); + +extern void xfrm_probe_algs(void); +extern int xfrm_count_auth_supported(void); +extern int xfrm_count_enc_supported(void); +extern struct xfrm_algo_desc *xfrm_aalg_get_byidx(unsigned int idx); +extern struct xfrm_algo_desc *xfrm_ealg_get_byidx(unsigned int idx); +extern struct xfrm_algo_desc *xfrm_aalg_get_byid(int alg_id); +extern struct xfrm_algo_desc *xfrm_ealg_get_byid(int alg_id); +extern struct xfrm_algo_desc *xfrm_calg_get_byid(int alg_id); +extern struct xfrm_algo_desc *xfrm_aalg_get_byname(char *name, int probe); +extern struct xfrm_algo_desc *xfrm_ealg_get_byname(char *name, int probe); +extern struct xfrm_algo_desc *xfrm_calg_get_byname(char *name, int probe); + +struct crypto_tfm; +typedef void (icv_update_fn_t)(struct crypto_tfm *, struct scatterlist *, unsigned int); + +extern void skb_icv_walk(const struct sk_buff *skb, struct crypto_tfm *tfm, + int offset, int len, icv_update_fn_t icv_update); + +static inline int xfrm_addr_cmp(xfrm_address_t *a, xfrm_address_t *b, + int family) +{ + switch (family) { + default: + case AF_INET: + return a->a4 - b->a4; + case AF_INET6: + return ipv6_addr_cmp((struct in6_addr *)a, + (struct in6_addr *)b); + } +} + +#endif /* _NET_XFRM_H */ |