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-rw-r--r--include/net/udp.h89
1 files changed, 34 insertions, 55 deletions
diff --git a/include/net/udp.h b/include/net/udp.h
index da68702ddf6e..8262e2b215b4 100644
--- a/include/net/udp.h
+++ b/include/net/udp.h
@@ -29,13 +29,12 @@
#include <linux/seq_file.h>
#include <linux/poll.h>
#include <linux/indirect_call_wrapper.h>
+#include <linux/math.h>
/**
- * struct udp_skb_cb - UDP(-Lite) private variables
+ * struct udp_skb_cb - UDP private variables
*
* @header: private variables used by IPv4/IPv6
- * @cscov: checksum coverage length (UDP-Lite only)
- * @partial_cov: if set indicates partial csum coverage
*/
struct udp_skb_cb {
union {
@@ -44,8 +43,6 @@ struct udp_skb_cb {
struct inet6_skb_parm h6;
#endif
} header;
- __u16 cscov;
- __u8 partial_cov;
};
#define UDP_SKB_CB(__skb) ((struct udp_skb_cb *)((__skb)->cb))
@@ -104,7 +101,7 @@ struct udp_table {
unsigned int log;
};
extern struct udp_table udp_table;
-void udp_table_init(struct udp_table *, const char *);
+
static inline struct udp_hslot *udp_hashslot(struct udp_table *table,
const struct net *net,
unsigned int num)
@@ -215,13 +212,11 @@ extern int sysctl_udp_wmem_min;
struct sk_buff;
/*
- * Generic checksumming routines for UDP(-Lite) v4 and v6
+ * Generic checksumming routines for UDP v4 and v6
*/
static inline __sum16 __udp_lib_checksum_complete(struct sk_buff *skb)
{
- return (UDP_SKB_CB(skb)->cscov == skb->len ?
- __skb_checksum_complete(skb) :
- __skb_checksum_complete_head(skb, UDP_SKB_CB(skb)->cscov));
+ return __skb_checksum_complete(skb);
}
static inline int udp_lib_checksum_complete(struct sk_buff *skb)
@@ -272,7 +267,6 @@ static inline void udp_csum_pull_header(struct sk_buff *skb)
skb->csum = csum_partial(skb->data, sizeof(struct udphdr),
skb->csum);
skb_pull_rcsum(skb, sizeof(struct udphdr));
- UDP_SKB_CB(skb)->cscov -= sizeof(struct udphdr);
}
typedef struct sock *(*udp_lookup_t)(const struct sk_buff *skb, __be16 sport,
@@ -281,6 +275,10 @@ typedef struct sock *(*udp_lookup_t)(const struct sk_buff *skb, __be16 sport,
void udp_v6_early_demux(struct sk_buff *skb);
INDIRECT_CALLABLE_DECLARE(int udpv6_rcv(struct sk_buff *));
+int udpv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len);
+INDIRECT_CALLABLE_DECLARE(int udpv6_recvmsg(struct sock *sk, struct msghdr *msg,
+ size_t len, int flags));
+
struct sk_buff *__udp_gso_segment(struct sk_buff *gso_skb,
netdev_features_t features, bool is_ipv6);
@@ -307,7 +305,7 @@ static inline void udp_drops_inc(struct sock *sk)
numa_drop_add(&udp_sk(sk)->drop_counters, 1);
}
-/* hash routines shared between UDPv4/6 and UDP-Litev4/6 */
+/* hash routines shared between UDPv4/6 */
static inline int udp_lib_hash(struct sock *sk)
{
BUG();
@@ -376,7 +374,7 @@ static inline __be16 udp_flow_src_port(struct net *net, struct sk_buff *skb,
*/
hash ^= hash << 16;
- return htons((((u64) hash * (max - min)) >> 32) + min);
+ return htons(reciprocal_scale(hash, max - min + 1) + min);
}
static inline int udp_rqueue_get(struct sock *sk)
@@ -415,6 +413,8 @@ bool udp_sk_rx_dst_set(struct sock *sk, struct dst_entry *dst);
int udp_err(struct sk_buff *, u32);
int udp_abort(struct sock *sk, int err);
int udp_sendmsg(struct sock *sk, struct msghdr *msg, size_t len);
+INDIRECT_CALLABLE_DECLARE(int udp_recvmsg(struct sock *sk, struct msghdr *msg,
+ size_t len, int flags));
void udp_splice_eof(struct socket *sock);
int udp_push_pending_frames(struct sock *sk);
void udp_flush_pending_frames(struct sock *sk);
@@ -422,7 +422,6 @@ int udp_cmsg_send(struct sock *sk, struct msghdr *msg, u16 *gso_size);
void udp4_hwcsum(struct sk_buff *skb, __be32 src, __be32 dst);
int udp_rcv(struct sk_buff *skb);
int udp_ioctl(struct sock *sk, int cmd, int *karg);
-int udp_init_sock(struct sock *sk);
int udp_pre_connect(struct sock *sk, struct sockaddr_unsized *uaddr, int addr_len);
int __udp_disconnect(struct sock *sk, int flags);
int udp_disconnect(struct sock *sk, int flags);
@@ -438,9 +437,8 @@ int udp_lib_setsockopt(struct sock *sk, int level, int optname,
struct sock *udp4_lib_lookup(const struct net *net, __be32 saddr, __be16 sport,
__be32 daddr, __be16 dport, int dif);
struct sock *__udp4_lib_lookup(const struct net *net, __be32 saddr,
- __be16 sport,
- __be32 daddr, __be16 dport, int dif, int sdif,
- struct udp_table *tbl, struct sk_buff *skb);
+ __be16 sport, __be32 daddr, __be16 dport,
+ int dif, int sdif, struct sk_buff *skb);
struct sock *udp4_lib_lookup_skb(const struct sk_buff *skb,
__be16 sport, __be16 dport);
struct sock *udp6_lib_lookup(const struct net *net,
@@ -450,8 +448,7 @@ struct sock *udp6_lib_lookup(const struct net *net,
struct sock *__udp6_lib_lookup(const struct net *net,
const struct in6_addr *saddr, __be16 sport,
const struct in6_addr *daddr, __be16 dport,
- int dif, int sdif, struct udp_table *tbl,
- struct sk_buff *skb);
+ int dif, int sdif, struct sk_buff *skb);
struct sock *udp6_lib_lookup_skb(const struct sk_buff *skb,
__be16 sport, __be16 dport);
int udp_read_skb(struct sock *sk, skb_read_actor_t recv_actor);
@@ -523,38 +520,28 @@ static inline int copy_linear_skb(struct sk_buff *skb, int len, int off,
}
/*
- * SNMP statistics for UDP and UDP-Lite
+ * SNMP statistics for UDP
*/
-#define UDP_INC_STATS(net, field, is_udplite) do { \
- if (unlikely(is_udplite)) SNMP_INC_STATS((net)->mib.udplite_statistics, field); \
- else SNMP_INC_STATS((net)->mib.udp_statistics, field); } while(0)
-#define __UDP_INC_STATS(net, field, is_udplite) do { \
- if (unlikely(is_udplite)) __SNMP_INC_STATS((net)->mib.udplite_statistics, field); \
- else __SNMP_INC_STATS((net)->mib.udp_statistics, field); } while(0)
-
-#define __UDP6_INC_STATS(net, field, is_udplite) do { \
- if (unlikely(is_udplite)) __SNMP_INC_STATS((net)->mib.udplite_stats_in6, field); \
- else __SNMP_INC_STATS((net)->mib.udp_stats_in6, field); \
-} while(0)
-#define UDP6_INC_STATS(net, field, __lite) do { \
- if (unlikely(__lite)) SNMP_INC_STATS((net)->mib.udplite_stats_in6, field); \
- else SNMP_INC_STATS((net)->mib.udp_stats_in6, field); \
-} while(0)
+#define __UDP_INC_STATS(net, field) \
+ __SNMP_INC_STATS((net)->mib.udp_statistics, field)
+#define UDP_INC_STATS(net, field) \
+ SNMP_INC_STATS((net)->mib.udp_statistics, field)
+#define __UDP6_INC_STATS(net, field) \
+ __SNMP_INC_STATS((net)->mib.udp_stats_in6, field)
+#define UDP6_INC_STATS(net, field) \
+ SNMP_INC_STATS((net)->mib.udp_stats_in6, field)
#if IS_ENABLED(CONFIG_IPV6)
-#define __UDPX_MIB(sk, ipv4) \
-({ \
- ipv4 ? (IS_UDPLITE(sk) ? sock_net(sk)->mib.udplite_statistics : \
- sock_net(sk)->mib.udp_statistics) : \
- (IS_UDPLITE(sk) ? sock_net(sk)->mib.udplite_stats_in6 : \
- sock_net(sk)->mib.udp_stats_in6); \
-})
+#define __UDPX_MIB(sk, ipv4) \
+ ({ \
+ ipv4 ? sock_net(sk)->mib.udp_statistics : \
+ sock_net(sk)->mib.udp_stats_in6; \
+ })
#else
-#define __UDPX_MIB(sk, ipv4) \
-({ \
- IS_UDPLITE(sk) ? sock_net(sk)->mib.udplite_statistics : \
- sock_net(sk)->mib.udp_statistics; \
-})
+#define __UDPX_MIB(sk, ipv4) \
+ ({ \
+ sock_net(sk)->mib.udp_statistics; \
+ })
#endif
#define __UDPX_INC_STATS(sk, field) \
@@ -563,7 +550,6 @@ static inline int copy_linear_skb(struct sk_buff *skb, int len, int off,
#ifdef CONFIG_PROC_FS
struct udp_seq_afinfo {
sa_family_t family;
- struct udp_table *udp_table;
};
struct udp_iter_state {
@@ -575,9 +561,6 @@ void *udp_seq_start(struct seq_file *seq, loff_t *pos);
void *udp_seq_next(struct seq_file *seq, void *v, loff_t *pos);
void udp_seq_stop(struct seq_file *seq, void *v);
-extern const struct seq_operations udp_seq_ops;
-extern const struct seq_operations udp6_seq_ops;
-
int udp4_proc_init(void);
void udp4_proc_exit(void);
#endif /* CONFIG_PROC_FS */
@@ -648,9 +631,6 @@ drop:
static inline void udp_post_segment_fix_csum(struct sk_buff *skb)
{
- /* UDP-lite can't land here - no GRO */
- WARN_ON_ONCE(UDP_SKB_CB(skb)->partial_cov);
-
/* UDP packets generated with UDP_SEGMENT and traversing:
*
* UDP tunnel(xmit) -> veth (segmentation) -> veth (gro) -> UDP tunnel (rx)
@@ -664,7 +644,6 @@ static inline void udp_post_segment_fix_csum(struct sk_buff *skb)
* a valid csum after the segmentation.
* Additionally fixup the UDP CB.
*/
- UDP_SKB_CB(skb)->cscov = skb->len;
if (skb->ip_summed == CHECKSUM_NONE && !skb->csum_valid)
skb->csum_valid = 1;
}