diff options
Diffstat (limited to 'net/mptcp/protocol.h')
| -rw-r--r-- | net/mptcp/protocol.h | 138 |
1 files changed, 81 insertions, 57 deletions
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 73526f1d768f..d409586b5977 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -124,12 +124,14 @@ #define MPTCP_FLUSH_JOIN_LIST 5 #define MPTCP_SYNC_STATE 6 #define MPTCP_SYNC_SNDBUF 7 +#define MPTCP_DEQUEUE 8 struct mptcp_skb_cb { u64 map_seq; u64 end_seq; u32 offset; - u8 has_rxtstamp:1; + u8 has_rxtstamp; + u8 cant_coalesce; }; #define MPTCP_SKB_CB(__skb) ((struct mptcp_skb_cb *)&((__skb)->cb[0])) @@ -149,22 +151,24 @@ struct mptcp_options_received { u32 subflow_seq; u16 data_len; __sum16 csum; - u16 suboptions; + struct_group(status, + u16 suboptions; + u16 use_map:1, + dsn64:1, + data_fin:1, + use_ack:1, + ack64:1, + mpc_map:1, + reset_reason:4, + reset_transient:1, + echo:1, + backup:1, + deny_join_id0:1, + __unused:2; + ); + u8 join_id; u32 token; u32 nonce; - u16 use_map:1, - dsn64:1, - data_fin:1, - use_ack:1, - ack64:1, - mpc_map:1, - reset_reason:4, - reset_transient:1, - echo:1, - backup:1, - deny_join_id0:1, - __unused:2; - u8 join_id; u64 thmac; u8 hmac[MPTCPOPT_HMAC_LEN]; struct mptcp_addr_info addr; @@ -219,6 +223,8 @@ struct mptcp_pm_data { spinlock_t lock; /*protects the whole PM data */ + struct_group(reset, + u8 addr_signal; bool server_side; bool work_pending; @@ -231,6 +237,9 @@ struct mptcp_pm_data { u8 pm_type; u8 subflows; u8 status; + + ); + DECLARE_BITMAP(id_avail_bitmap, MPTCP_PM_MAX_ADDR_ID + 1); struct mptcp_rm_list rm_list_tx; struct mptcp_rm_list rm_list_rx; @@ -277,7 +286,6 @@ struct mptcp_sock { u64 rcv_data_fin_seq; u64 bytes_retrans; u64 bytes_consumed; - int rmem_fwd_alloc; int snd_burst; int old_wspace; u64 recovery_snd_nxt; /* in recovery mode accept up to this seq; @@ -292,7 +300,6 @@ struct mptcp_sock { u32 last_ack_recv; unsigned long timer_ival; u32 token; - int rmem_released; unsigned long flags; unsigned long cb_flags; bool recovery; /* closing subflow write queue reinjected */ @@ -322,7 +329,6 @@ struct mptcp_sock { struct work_struct work; struct sk_buff *ooo_last_skb; struct rb_root out_of_order_queue; - struct sk_buff_head receive_queue; struct list_head conn_list; struct list_head rtx_queue; struct mptcp_data_frag *first_pending; @@ -353,6 +359,8 @@ struct mptcp_sock { list_for_each_entry(__subflow, &((__msk)->conn_list), node) #define mptcp_for_each_subflow_safe(__msk, __subflow, __tmp) \ list_for_each_entry_safe(__subflow, __tmp, &((__msk)->conn_list), node) +#define mptcp_next_subflow(__msk, __subflow) \ + list_next_entry_circular(__subflow, &((__msk)->conn_list), node) extern struct genl_family mptcp_genl_family; @@ -379,14 +387,6 @@ static inline void msk_owned_by_me(const struct mptcp_sock *msk) #define mptcp_sk(ptr) container_of_const(ptr, struct mptcp_sock, sk.icsk_inet.sk) #endif -/* the msk socket don't use the backlog, also account for the bulk - * free memory - */ -static inline int __mptcp_rmem(const struct sock *sk) -{ - return atomic_read(&sk->sk_rmem_alloc) - READ_ONCE(mptcp_sk(sk)->rmem_released); -} - static inline int mptcp_win_from_space(const struct sock *sk, int space) { return __tcp_win_from_space(mptcp_sk(sk)->scaling_ratio, space); @@ -399,7 +399,8 @@ static inline int mptcp_space_from_win(const struct sock *sk, int win) static inline int __mptcp_space(const struct sock *sk) { - return mptcp_win_from_space(sk, READ_ONCE(sk->sk_rcvbuf) - __mptcp_rmem(sk)); + return mptcp_win_from_space(sk, READ_ONCE(sk->sk_rcvbuf) - + sk_rmem_alloc_get(sk)); } static inline struct mptcp_data_frag *mptcp_send_head(const struct sock *sk) @@ -698,6 +699,7 @@ int mptcp_allow_join_id0(const struct net *net); unsigned int mptcp_stale_loss_cnt(const struct net *net); unsigned int mptcp_close_timeout(const struct sock *sk); int mptcp_get_pm_type(const struct net *net); +const char *mptcp_get_path_manager(const struct net *net); const char *mptcp_get_scheduler(const struct net *net); void mptcp_active_disable(struct sock *sk); @@ -724,12 +726,14 @@ struct sock *__mptcp_nmpc_sk(struct mptcp_sock *msk); bool __mptcp_close(struct sock *sk, long timeout); void mptcp_cancel_work(struct sock *sk); void __mptcp_unaccepted_force_close(struct sock *sk); -void mptcp_set_owner_r(struct sk_buff *skb, struct sock *sk); void mptcp_set_state(struct sock *sk, int state); bool mptcp_addresses_equal(const struct mptcp_addr_info *a, const struct mptcp_addr_info *b, bool use_port); -void mptcp_local_address(const struct sock_common *skc, struct mptcp_addr_info *addr); +void mptcp_local_address(const struct sock_common *skc, + struct mptcp_addr_info *addr); +void mptcp_remote_address(const struct sock_common *skc, + struct mptcp_addr_info *addr); /* called with sk socket lock held */ int __mptcp_subflow_connect(struct sock *sk, const struct mptcp_pm_local *local, @@ -988,6 +992,7 @@ __sum16 __mptcp_make_csum(u64 data_seq, u32 subflow_seq, u16 data_len, __wsum su void __init mptcp_pm_init(void); void mptcp_pm_data_init(struct mptcp_sock *msk); void mptcp_pm_data_reset(struct mptcp_sock *msk); +void mptcp_pm_destroy(struct mptcp_sock *msk); int mptcp_pm_parse_addr(struct nlattr *attr, struct genl_info *info, struct mptcp_addr_info *addr); int mptcp_pm_parse_entry(struct nlattr *attr, struct genl_info *info, @@ -997,7 +1002,6 @@ bool mptcp_pm_addr_families_match(const struct sock *sk, const struct mptcp_addr_info *loc, const struct mptcp_addr_info *rem); void mptcp_pm_subflow_chk_stale(const struct mptcp_sock *msk, struct sock *ssk); -void mptcp_pm_nl_subflow_chk_stale(const struct mptcp_sock *msk, struct sock *ssk); void mptcp_pm_new_connection(struct mptcp_sock *msk, const struct sock *ssk, int server_side); void mptcp_pm_fully_established(struct mptcp_sock *msk, const struct sock *ssk); bool mptcp_pm_allow_new_subflow(struct mptcp_sock *msk); @@ -1011,37 +1015,52 @@ void mptcp_pm_add_addr_received(const struct sock *ssk, void mptcp_pm_add_addr_echoed(struct mptcp_sock *msk, const struct mptcp_addr_info *addr); void mptcp_pm_add_addr_send_ack(struct mptcp_sock *msk); -bool mptcp_pm_nl_is_init_remote_addr(struct mptcp_sock *msk, - const struct mptcp_addr_info *remote); -void mptcp_pm_nl_addr_send_ack(struct mptcp_sock *msk); +void mptcp_pm_send_ack(struct mptcp_sock *msk, + struct mptcp_subflow_context *subflow, + bool prio, bool backup); +void mptcp_pm_addr_send_ack(struct mptcp_sock *msk); +void mptcp_pm_nl_rm_addr(struct mptcp_sock *msk, u8 rm_id); +void mptcp_pm_rm_subflow(struct mptcp_sock *msk, + const struct mptcp_rm_list *rm_list); void mptcp_pm_rm_addr_received(struct mptcp_sock *msk, const struct mptcp_rm_list *rm_list); void mptcp_pm_mp_prio_received(struct sock *sk, u8 bkup); void mptcp_pm_mp_fail_received(struct sock *sk, u64 fail_seq); -int mptcp_pm_nl_mp_prio_send_ack(struct mptcp_sock *msk, - struct mptcp_addr_info *addr, - struct mptcp_addr_info *rem, - u8 bkup); +int mptcp_pm_mp_prio_send_ack(struct mptcp_sock *msk, + struct mptcp_addr_info *addr, + struct mptcp_addr_info *rem, + u8 bkup); bool mptcp_pm_alloc_anno_list(struct mptcp_sock *msk, const struct mptcp_addr_info *addr); -void mptcp_pm_free_anno_list(struct mptcp_sock *msk); bool mptcp_pm_sport_in_anno_list(struct mptcp_sock *msk, const struct sock *sk); struct mptcp_pm_add_entry * mptcp_pm_del_add_timer(struct mptcp_sock *msk, const struct mptcp_addr_info *addr, bool check_id); -struct mptcp_pm_add_entry * -mptcp_lookup_anno_list_by_saddr(const struct mptcp_sock *msk, - const struct mptcp_addr_info *addr); -int mptcp_pm_set_flags(struct sk_buff *skb, struct genl_info *info); -int mptcp_pm_nl_set_flags(struct sk_buff *skb, struct genl_info *info); -int mptcp_userspace_pm_set_flags(struct sk_buff *skb, struct genl_info *info); +bool mptcp_lookup_subflow_by_saddr(const struct list_head *list, + const struct mptcp_addr_info *saddr); +bool mptcp_remove_anno_list_by_saddr(struct mptcp_sock *msk, + const struct mptcp_addr_info *addr); +int mptcp_pm_nl_set_flags(struct mptcp_pm_addr_entry *local, + struct genl_info *info); +int mptcp_userspace_pm_set_flags(struct mptcp_pm_addr_entry *local, + struct genl_info *info); int mptcp_pm_announce_addr(struct mptcp_sock *msk, const struct mptcp_addr_info *addr, bool echo); int mptcp_pm_remove_addr(struct mptcp_sock *msk, const struct mptcp_rm_list *rm_list); -void mptcp_pm_remove_addrs(struct mptcp_sock *msk, struct list_head *rm_list); +void mptcp_pm_remove_addr_entry(struct mptcp_sock *msk, + struct mptcp_pm_addr_entry *entry); + +/* the default path manager, used in mptcp_pm_unregister */ +extern struct mptcp_pm_ops mptcp_pm_kernel; -void mptcp_free_local_addr_list(struct mptcp_sock *msk); +struct mptcp_pm_ops *mptcp_pm_find(const char *name); +int mptcp_pm_register(struct mptcp_pm_ops *pm_ops); +void mptcp_pm_unregister(struct mptcp_pm_ops *pm_ops); +int mptcp_pm_validate(struct mptcp_pm_ops *pm_ops); +void mptcp_pm_get_available(char *buf, size_t maxlen); + +void mptcp_userspace_pm_free_local_addr_list(struct mptcp_sock *msk); void mptcp_event(enum mptcp_event_type type, const struct mptcp_sock *msk, const struct sock *ssk, gfp_t gfp); @@ -1051,12 +1070,11 @@ void mptcp_event_pm_listener(const struct sock *ssk, enum mptcp_event_type event); bool mptcp_userspace_pm_active(const struct mptcp_sock *msk); -void __mptcp_fastopen_gen_msk_ackseq(struct mptcp_sock *msk, struct mptcp_subflow_context *subflow, - const struct mptcp_options_received *mp_opt); void mptcp_fastopen_subflow_synack_set_params(struct mptcp_subflow_context *subflow, struct request_sock *req); -int mptcp_nl_fill_addr(struct sk_buff *skb, - struct mptcp_pm_addr_entry *entry); +int mptcp_pm_genl_fill_addr(struct sk_buff *msg, + struct netlink_callback *cb, + struct mptcp_pm_addr_entry *entry); static inline bool mptcp_pm_should_add_signal(struct mptcp_sock *msk) { @@ -1119,19 +1137,20 @@ bool mptcp_pm_add_addr_signal(struct mptcp_sock *msk, const struct sk_buff *skb, bool mptcp_pm_rm_addr_signal(struct mptcp_sock *msk, unsigned int remaining, struct mptcp_rm_list *rm_list); int mptcp_pm_get_local_id(struct mptcp_sock *msk, struct sock_common *skc); -int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct mptcp_addr_info *skc); -int mptcp_userspace_pm_get_local_id(struct mptcp_sock *msk, struct mptcp_addr_info *skc); +int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, + struct mptcp_pm_addr_entry *skc); +int mptcp_userspace_pm_get_local_id(struct mptcp_sock *msk, + struct mptcp_pm_addr_entry *skc); bool mptcp_pm_is_backup(struct mptcp_sock *msk, struct sock_common *skc); bool mptcp_pm_nl_is_backup(struct mptcp_sock *msk, struct mptcp_addr_info *skc); bool mptcp_userspace_pm_is_backup(struct mptcp_sock *msk, struct mptcp_addr_info *skc); -int mptcp_pm_dump_addr(struct sk_buff *msg, struct netlink_callback *cb); int mptcp_pm_nl_dump_addr(struct sk_buff *msg, struct netlink_callback *cb); int mptcp_userspace_pm_dump_addr(struct sk_buff *msg, struct netlink_callback *cb); -int mptcp_pm_get_addr(struct sk_buff *skb, struct genl_info *info); -int mptcp_pm_nl_get_addr(struct sk_buff *skb, struct genl_info *info); -int mptcp_userspace_pm_get_addr(struct sk_buff *skb, +int mptcp_pm_nl_get_addr(u8 id, struct mptcp_pm_addr_entry *addr, + struct genl_info *info); +int mptcp_userspace_pm_get_addr(u8 id, struct mptcp_pm_addr_entry *addr, struct genl_info *info); static inline u8 subflow_get_local_id(const struct mptcp_subflow_context *subflow) @@ -1143,8 +1162,11 @@ static inline u8 subflow_get_local_id(const struct mptcp_subflow_context *subflo return local_id; } +void __init mptcp_pm_kernel_register(void); +void __init mptcp_pm_userspace_register(void); void __init mptcp_pm_nl_init(void); -void mptcp_pm_nl_work(struct mptcp_sock *msk); +void mptcp_pm_worker(struct mptcp_sock *msk); +void __mptcp_pm_kernel_worker(struct mptcp_sock *msk); unsigned int mptcp_pm_get_add_addr_signal_max(const struct mptcp_sock *msk); unsigned int mptcp_pm_get_add_addr_accept_max(const struct mptcp_sock *msk); unsigned int mptcp_pm_get_subflows_max(const struct mptcp_sock *msk); @@ -1192,6 +1214,8 @@ static inline void __mptcp_do_fallback(struct mptcp_sock *msk) pr_debug("TCP fallback already done (msk=%p)\n", msk); return; } + if (WARN_ON_ONCE(!READ_ONCE(msk->allow_infinite_fallback))) + return; set_bit(MPTCP_FALLBACK_DONE, &msk->flags); } |