diff options
Diffstat (limited to 'include/net/tcp.h')
| -rw-r--r-- | include/net/tcp.h | 91 |
1 files changed, 43 insertions, 48 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h index ecbadcb3a744..2c5b889530b5 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -65,8 +65,6 @@ static inline void tcp_orphan_count_dec(void) this_cpu_dec(tcp_orphan_count); } -DECLARE_PER_CPU(u32, tcp_tw_isn); - void tcp_time_wait(struct sock *sk, int state, int timeo); #define MAX_TCP_HEADER L1_CACHE_ALIGN(128 + MAX_HEADER) @@ -390,7 +388,6 @@ static inline bool tcp_release_cb_cond(struct sock *sk) return false; } -void tcp_wfree(struct sk_buff *skb); void tcp_write_timer_handler(struct sock *sk); void tcp_delack_timer_handler(struct sock *sk); int tcp_ioctl(struct sock *sk, int cmd, int *karg); @@ -1015,6 +1012,16 @@ static inline u32 tcp_time_stamp_ts(const struct tcp_sock *tp) return tcp_time_stamp_ms(tp); } +/* Refresh clocks of a TCP socket, + * ensuring monotically increasing values. + */ +static inline void tcp_mstamp_refresh_inline(struct tcp_sock *tp) +{ + u64 val = tcp_clock_ns(); + + tp->tcp_clock_cache = val; + tp->tcp_mstamp = div_u64(val, NSEC_PER_USEC); +} void tcp_mstamp_refresh(struct tcp_sock *tp); static inline u32 tcp_stamp_us_delta(u64 t1, u64 t0) @@ -1102,10 +1109,13 @@ struct tcp_skb_cb { __u32 seq; /* Starting sequence number */ __u32 end_seq; /* SEQ + FIN + SYN + datalen */ union { - /* Note : + /* Notes : + * tcp_tw_isn is used in input path only + * (isn chosen by tcp_timewait_state_process()) * tcp_gso_segs/size are used in write queue only, * cf tcp_skb_pcount()/tcp_skb_mss() */ + u32 tcp_tw_isn; struct { u16 tcp_gso_segs; u16 tcp_gso_size; @@ -1964,6 +1974,8 @@ static inline void tcp_fast_path_check(struct sock *sk) bool tcp_oow_rate_limited(struct net *net, const struct sk_buff *skb, int mib_idx, u32 *last_oow_ack_time); +void tcp_reqsk_send_challenge_ack(struct sock *sk, struct sk_buff *skb, + struct request_sock *req); static inline void tcp_mib_init(struct net *net) { @@ -2017,40 +2029,6 @@ struct tcp6_pseudohdr { __be32 protocol; /* including padding */ }; -/* - * struct tcp_sigpool - per-CPU pool of ahash_requests - * @scratch: per-CPU temporary area, that can be used between - * tcp_sigpool_start() and tcp_sigpool_end() to perform - * crypto request - * @req: pre-allocated ahash request - */ -struct tcp_sigpool { - void *scratch; - struct ahash_request *req; -}; - -int tcp_sigpool_alloc_ahash(const char *alg, size_t scratch_size); -void tcp_sigpool_get(unsigned int id); -void tcp_sigpool_release(unsigned int id); -int tcp_sigpool_hash_skb_data(struct tcp_sigpool *hp, - const struct sk_buff *skb, - unsigned int header_len); - -/** - * tcp_sigpool_start - disable bh and start using tcp_sigpool_ahash - * @id: tcp_sigpool that was previously allocated by tcp_sigpool_alloc_ahash() - * @c: returned tcp_sigpool for usage (uninitialized on failure) - * - * Returns: 0 on success, error otherwise. - */ -int tcp_sigpool_start(unsigned int id, struct tcp_sigpool *c); -/** - * tcp_sigpool_end - enable bh and stop using tcp_sigpool - * @c: tcp_sigpool context that was returned by tcp_sigpool_start() - */ -void tcp_sigpool_end(struct tcp_sigpool *c); -size_t tcp_sigpool_algo(unsigned int id, char *buf, size_t buf_len); -/* - functions */ void tcp_v4_md5_hash_skb(char *md5_hash, const struct tcp_md5sig_key *key, const struct sock *sk, const struct sk_buff *skb); int tcp_md5_do_add(struct sock *sk, const union tcp_md5_addr *addr, @@ -2510,9 +2488,9 @@ struct tcp_sock_af_ops { struct tcp_ao_key *(*ao_lookup)(const struct sock *sk, struct sock *addr_sk, int sndid, int rcvid); - int (*ao_calc_key_sk)(struct tcp_ao_key *mkt, u8 *key, - const struct sock *sk, - __be32 sisn, __be32 disn, bool send); + void (*ao_calc_key_sk)(struct tcp_ao_key *mkt, u8 *key, + const struct sock *sk, + __be32 sisn, __be32 disn, bool send); int (*calc_ao_hash)(char *location, struct tcp_ao_key *ao, const struct sock *sk, const struct sk_buff *skb, const u8 *tkey, int hash_offset, u32 sne); @@ -2533,7 +2511,7 @@ struct tcp_request_sock_ops { struct tcp_ao_key *(*ao_lookup)(const struct sock *sk, struct request_sock *req, int sndid, int rcvid); - int (*ao_calc_key)(struct tcp_ao_key *mkt, u8 *key, struct request_sock *sk); + void (*ao_calc_key)(struct tcp_ao_key *mkt, u8 *key, struct request_sock *sk); int (*ao_synack_hash)(char *ao_hash, struct tcp_ao_key *mkt, struct request_sock *req, const struct sk_buff *skb, int hash_offset, u32 sne); @@ -2564,22 +2542,30 @@ extern const struct tcp_request_sock_ops tcp_request_sock_ipv6_ops; #ifdef CONFIG_SYN_COOKIES static inline __u32 cookie_init_sequence(const struct tcp_request_sock_ops *ops, - const struct sock *sk, struct sk_buff *skb, - __u16 *mss) + struct sk_buff *skb, __u16 *mss) { - tcp_synq_overflow(sk); - __NET_INC_STATS(sock_net(sk), LINUX_MIB_SYNCOOKIESSENT); return ops->cookie_init_seq(skb, mss); } #else static inline __u32 cookie_init_sequence(const struct tcp_request_sock_ops *ops, - const struct sock *sk, struct sk_buff *skb, - __u16 *mss) + struct sk_buff *skb, __u16 *mss) { return 0; } #endif +#ifdef CONFIG_SYN_COOKIES +static inline void cookie_record_sent(const struct sock *sk) +{ + tcp_synq_overflow(sk); + __NET_INC_STATS(sock_net(sk), LINUX_MIB_SYNCOOKIESSENT); +} +#else +static inline void cookie_record_sent(const struct sock *sk) +{ +} +#endif + struct tcp_key { union { struct { @@ -2941,6 +2927,11 @@ static inline int tcp_call_bpf_3arg(struct sock *sk, int op, u32 arg1, u32 arg2, return tcp_call_bpf(sk, op, 3, args); } +static inline void tcp_clear_sock_ops_cb_flags(struct sock *sk) +{ + tcp_sk(sk)->bpf_sock_ops_cb_flags = 0; +} + #else static inline int tcp_call_bpf(struct sock *sk, int op, u32 nargs, u32 *args) { @@ -2958,6 +2949,10 @@ static inline int tcp_call_bpf_3arg(struct sock *sk, int op, u32 arg1, u32 arg2, return -EPERM; } +static inline void tcp_clear_sock_ops_cb_flags(struct sock *sk) +{ +} + #endif static inline u32 tcp_timeout_init(struct sock *sk) |