[TCP]: less inline's
TCP inline usage cleanup:
* get rid of inline in several places
* replace __inline__ with inline where possible
* move functions used in one file out of tcp.h
* let compiler decide on used once cases
On x86_64:
text data bss dec hex filename
3594701 648348 567400 4810449 4966d1 vmlinux.orig
3593133 648580 567400 4809113 496199 vmlinux
On sparc64:
text data bss dec hex filename
2538278 406152 530392 3474822 350586 vmlinux.ORIG
2536382 406384 530392 3473158 34ff06 vmlinux
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger
David S. Miller
parent
3c19065a1e
commit
40efc6fa17
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@ -445,34 +445,16 @@ typedef int (*sk_read_actor_t)(read_descriptor_t *, struct sk_buff *,
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extern int tcp_read_sock(struct sock *sk, read_descriptor_t *desc,
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sk_read_actor_t recv_actor);
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/* Initialize RCV_MSS value.
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* RCV_MSS is an our guess about MSS used by the peer.
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* We haven't any direct information about the MSS.
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* It's better to underestimate the RCV_MSS rather than overestimate.
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* Overestimations make us ACKing less frequently than needed.
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* Underestimations are more easy to detect and fix by tcp_measure_rcv_mss().
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*/
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extern void tcp_initialize_rcv_mss(struct sock *sk);
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static inline void tcp_initialize_rcv_mss(struct sock *sk)
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{
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struct tcp_sock *tp = tcp_sk(sk);
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unsigned int hint = min_t(unsigned int, tp->advmss, tp->mss_cache);
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hint = min(hint, tp->rcv_wnd/2);
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hint = min(hint, TCP_MIN_RCVMSS);
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hint = max(hint, TCP_MIN_MSS);
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inet_csk(sk)->icsk_ack.rcv_mss = hint;
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}
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static __inline__ void __tcp_fast_path_on(struct tcp_sock *tp, u32 snd_wnd)
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static inline void __tcp_fast_path_on(struct tcp_sock *tp, u32 snd_wnd)
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{
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tp->pred_flags = htonl((tp->tcp_header_len << 26) |
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ntohl(TCP_FLAG_ACK) |
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snd_wnd);
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}
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static __inline__ void tcp_fast_path_on(struct tcp_sock *tp)
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static inline void tcp_fast_path_on(struct tcp_sock *tp)
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{
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__tcp_fast_path_on(tp, tp->snd_wnd >> tp->rx_opt.snd_wscale);
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}
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@ -490,7 +472,7 @@ static inline void tcp_fast_path_check(struct sock *sk, struct tcp_sock *tp)
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* Rcv_nxt can be after the window if our peer push more data
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* than the offered window.
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*/
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static __inline__ u32 tcp_receive_window(const struct tcp_sock *tp)
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static inline u32 tcp_receive_window(const struct tcp_sock *tp)
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{
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s32 win = tp->rcv_wup + tp->rcv_wnd - tp->rcv_nxt;
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@ -662,6 +644,7 @@ extern void tcp_cleanup_congestion_control(struct sock *sk);
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extern int tcp_set_default_congestion_control(const char *name);
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extern void tcp_get_default_congestion_control(char *name);
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extern int tcp_set_congestion_control(struct sock *sk, const char *name);
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extern void tcp_slow_start(struct tcp_sock *tp);
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extern struct tcp_congestion_ops tcp_init_congestion_ops;
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extern u32 tcp_reno_ssthresh(struct sock *sk);
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@ -701,7 +684,7 @@ static inline void tcp_ca_event(struct sock *sk, const enum tcp_ca_event event)
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* "Packets left network, but not honestly ACKed yet" PLUS
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* "Packets fast retransmitted"
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*/
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static __inline__ unsigned int tcp_packets_in_flight(const struct tcp_sock *tp)
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static inline unsigned int tcp_packets_in_flight(const struct tcp_sock *tp)
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{
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return (tp->packets_out - tp->left_out + tp->retrans_out);
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}
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@ -721,33 +704,6 @@ static inline __u32 tcp_current_ssthresh(const struct sock *sk)
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(tp->snd_cwnd >> 2)));
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}
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/*
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* Linear increase during slow start
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*/
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static inline void tcp_slow_start(struct tcp_sock *tp)
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{
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if (sysctl_tcp_abc) {
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/* RFC3465: Slow Start
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* TCP sender SHOULD increase cwnd by the number of
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* previously unacknowledged bytes ACKed by each incoming
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* acknowledgment, provided the increase is not more than L
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*/
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if (tp->bytes_acked < tp->mss_cache)
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return;
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/* We MAY increase by 2 if discovered delayed ack */
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if (sysctl_tcp_abc > 1 && tp->bytes_acked > 2*tp->mss_cache) {
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if (tp->snd_cwnd < tp->snd_cwnd_clamp)
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tp->snd_cwnd++;
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}
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}
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tp->bytes_acked = 0;
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if (tp->snd_cwnd < tp->snd_cwnd_clamp)
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tp->snd_cwnd++;
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}
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static inline void tcp_sync_left_out(struct tcp_sock *tp)
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{
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if (tp->rx_opt.sack_ok &&
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@ -756,34 +712,7 @@ static inline void tcp_sync_left_out(struct tcp_sock *tp)
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tp->left_out = tp->sacked_out + tp->lost_out;
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}
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/* Set slow start threshold and cwnd not falling to slow start */
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static inline void __tcp_enter_cwr(struct sock *sk)
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{
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const struct inet_connection_sock *icsk = inet_csk(sk);
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struct tcp_sock *tp = tcp_sk(sk);
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tp->undo_marker = 0;
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tp->snd_ssthresh = icsk->icsk_ca_ops->ssthresh(sk);
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tp->snd_cwnd = min(tp->snd_cwnd,
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tcp_packets_in_flight(tp) + 1U);
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tp->snd_cwnd_cnt = 0;
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tp->high_seq = tp->snd_nxt;
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tp->snd_cwnd_stamp = tcp_time_stamp;
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TCP_ECN_queue_cwr(tp);
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}
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static inline void tcp_enter_cwr(struct sock *sk)
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{
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struct tcp_sock *tp = tcp_sk(sk);
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tp->prior_ssthresh = 0;
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tp->bytes_acked = 0;
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if (inet_csk(sk)->icsk_ca_state < TCP_CA_CWR) {
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__tcp_enter_cwr(sk);
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tcp_set_ca_state(sk, TCP_CA_CWR);
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}
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}
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extern void tcp_enter_cwr(struct sock *sk);
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extern __u32 tcp_init_cwnd(struct tcp_sock *tp, struct dst_entry *dst);
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/* Slow start with delack produces 3 packets of burst, so that
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@ -815,14 +744,14 @@ static inline int tcp_is_cwnd_limited(const struct sock *sk, u32 in_flight)
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return left <= tcp_max_burst(tp);
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}
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static __inline__ void tcp_minshall_update(struct tcp_sock *tp, int mss,
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const struct sk_buff *skb)
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static inline void tcp_minshall_update(struct tcp_sock *tp, int mss,
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const struct sk_buff *skb)
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{
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if (skb->len < mss)
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tp->snd_sml = TCP_SKB_CB(skb)->end_seq;
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}
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static __inline__ void tcp_check_probe_timer(struct sock *sk, struct tcp_sock *tp)
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static inline void tcp_check_probe_timer(struct sock *sk, struct tcp_sock *tp)
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{
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const struct inet_connection_sock *icsk = inet_csk(sk);
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if (!tp->packets_out && !icsk->icsk_pending)
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@ -830,18 +759,18 @@ static __inline__ void tcp_check_probe_timer(struct sock *sk, struct tcp_sock *t
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icsk->icsk_rto, TCP_RTO_MAX);
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}
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static __inline__ void tcp_push_pending_frames(struct sock *sk,
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struct tcp_sock *tp)
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static inline void tcp_push_pending_frames(struct sock *sk,
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struct tcp_sock *tp)
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{
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__tcp_push_pending_frames(sk, tp, tcp_current_mss(sk, 1), tp->nonagle);
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}
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static __inline__ void tcp_init_wl(struct tcp_sock *tp, u32 ack, u32 seq)
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static inline void tcp_init_wl(struct tcp_sock *tp, u32 ack, u32 seq)
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{
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tp->snd_wl1 = seq;
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}
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static __inline__ void tcp_update_wl(struct tcp_sock *tp, u32 ack, u32 seq)
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static inline void tcp_update_wl(struct tcp_sock *tp, u32 ack, u32 seq)
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{
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tp->snd_wl1 = seq;
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}
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@ -849,19 +778,19 @@ static __inline__ void tcp_update_wl(struct tcp_sock *tp, u32 ack, u32 seq)
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/*
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* Calculate(/check) TCP checksum
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*/
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static __inline__ u16 tcp_v4_check(struct tcphdr *th, int len,
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unsigned long saddr, unsigned long daddr,
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unsigned long base)
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static inline u16 tcp_v4_check(struct tcphdr *th, int len,
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unsigned long saddr, unsigned long daddr,
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unsigned long base)
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{
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return csum_tcpudp_magic(saddr,daddr,len,IPPROTO_TCP,base);
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}
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static __inline__ int __tcp_checksum_complete(struct sk_buff *skb)
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static inline int __tcp_checksum_complete(struct sk_buff *skb)
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{
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return __skb_checksum_complete(skb);
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}
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static __inline__ int tcp_checksum_complete(struct sk_buff *skb)
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static inline int tcp_checksum_complete(struct sk_buff *skb)
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{
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return skb->ip_summed != CHECKSUM_UNNECESSARY &&
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__tcp_checksum_complete(skb);
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@ -869,7 +798,7 @@ static __inline__ int tcp_checksum_complete(struct sk_buff *skb)
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/* Prequeue for VJ style copy to user, combined with checksumming. */
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static __inline__ void tcp_prequeue_init(struct tcp_sock *tp)
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static inline void tcp_prequeue_init(struct tcp_sock *tp)
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{
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tp->ucopy.task = NULL;
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tp->ucopy.len = 0;
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@ -885,7 +814,7 @@ static __inline__ void tcp_prequeue_init(struct tcp_sock *tp)
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*
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* NOTE: is this not too big to inline?
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*/
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static __inline__ int tcp_prequeue(struct sock *sk, struct sk_buff *skb)
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static inline int tcp_prequeue(struct sock *sk, struct sk_buff *skb)
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{
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struct tcp_sock *tp = tcp_sk(sk);
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@ -926,7 +855,7 @@ static const char *statename[]={
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};
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#endif
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static __inline__ void tcp_set_state(struct sock *sk, int state)
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static inline void tcp_set_state(struct sock *sk, int state)
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{
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int oldstate = sk->sk_state;
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@ -960,7 +889,7 @@ static __inline__ void tcp_set_state(struct sock *sk, int state)
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#endif
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}
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static __inline__ void tcp_done(struct sock *sk)
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static inline void tcp_done(struct sock *sk)
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{
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tcp_set_state(sk, TCP_CLOSE);
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tcp_clear_xmit_timers(sk);
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@ -973,81 +902,13 @@ static __inline__ void tcp_done(struct sock *sk)
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inet_csk_destroy_sock(sk);
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}
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static __inline__ void tcp_sack_reset(struct tcp_options_received *rx_opt)
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static inline void tcp_sack_reset(struct tcp_options_received *rx_opt)
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{
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rx_opt->dsack = 0;
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rx_opt->eff_sacks = 0;
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rx_opt->num_sacks = 0;
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}
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static __inline__ void tcp_build_and_update_options(__u32 *ptr, struct tcp_sock *tp, __u32 tstamp)
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{
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if (tp->rx_opt.tstamp_ok) {
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*ptr++ = __constant_htonl((TCPOPT_NOP << 24) |
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(TCPOPT_NOP << 16) |
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(TCPOPT_TIMESTAMP << 8) |
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TCPOLEN_TIMESTAMP);
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*ptr++ = htonl(tstamp);
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*ptr++ = htonl(tp->rx_opt.ts_recent);
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}
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if (tp->rx_opt.eff_sacks) {
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struct tcp_sack_block *sp = tp->rx_opt.dsack ? tp->duplicate_sack : tp->selective_acks;
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int this_sack;
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*ptr++ = htonl((TCPOPT_NOP << 24) |
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(TCPOPT_NOP << 16) |
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(TCPOPT_SACK << 8) |
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(TCPOLEN_SACK_BASE + (tp->rx_opt.eff_sacks *
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TCPOLEN_SACK_PERBLOCK)));
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for(this_sack = 0; this_sack < tp->rx_opt.eff_sacks; this_sack++) {
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*ptr++ = htonl(sp[this_sack].start_seq);
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*ptr++ = htonl(sp[this_sack].end_seq);
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}
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if (tp->rx_opt.dsack) {
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tp->rx_opt.dsack = 0;
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tp->rx_opt.eff_sacks--;
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}
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}
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}
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/* Construct a tcp options header for a SYN or SYN_ACK packet.
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* If this is every changed make sure to change the definition of
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* MAX_SYN_SIZE to match the new maximum number of options that you
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* can generate.
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*/
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static inline void tcp_syn_build_options(__u32 *ptr, int mss, int ts, int sack,
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int offer_wscale, int wscale, __u32 tstamp, __u32 ts_recent)
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{
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/* We always get an MSS option.
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* The option bytes which will be seen in normal data
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* packets should timestamps be used, must be in the MSS
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* advertised. But we subtract them from tp->mss_cache so
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* that calculations in tcp_sendmsg are simpler etc.
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* So account for this fact here if necessary. If we
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* don't do this correctly, as a receiver we won't
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* recognize data packets as being full sized when we
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* should, and thus we won't abide by the delayed ACK
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* rules correctly.
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* SACKs don't matter, we never delay an ACK when we
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* have any of those going out.
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*/
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*ptr++ = htonl((TCPOPT_MSS << 24) | (TCPOLEN_MSS << 16) | mss);
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if (ts) {
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if(sack)
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*ptr++ = __constant_htonl((TCPOPT_SACK_PERM << 24) | (TCPOLEN_SACK_PERM << 16) |
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(TCPOPT_TIMESTAMP << 8) | TCPOLEN_TIMESTAMP);
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else
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*ptr++ = __constant_htonl((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16) |
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(TCPOPT_TIMESTAMP << 8) | TCPOLEN_TIMESTAMP);
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*ptr++ = htonl(tstamp); /* TSVAL */
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*ptr++ = htonl(ts_recent); /* TSECR */
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} else if(sack)
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*ptr++ = __constant_htonl((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16) |
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(TCPOPT_SACK_PERM << 8) | TCPOLEN_SACK_PERM);
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if (offer_wscale)
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*ptr++ = htonl((TCPOPT_NOP << 24) | (TCPOPT_WINDOW << 16) | (TCPOLEN_WINDOW << 8) | (wscale));
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}
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/* Determine a window scaling and initial window to offer. */
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extern void tcp_select_initial_window(int __space, __u32 mss,
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__u32 *rcv_wnd, __u32 *window_clamp,
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@ -1072,9 +933,9 @@ static inline int tcp_full_space(const struct sock *sk)
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return tcp_win_from_space(sk->sk_rcvbuf);
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}
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static __inline__ void tcp_openreq_init(struct request_sock *req,
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struct tcp_options_received *rx_opt,
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struct sk_buff *skb)
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static inline void tcp_openreq_init(struct request_sock *req,
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struct tcp_options_received *rx_opt,
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struct sk_buff *skb)
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{
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struct inet_request_sock *ireq = inet_rsk(req);
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@ -174,6 +174,34 @@ int tcp_set_congestion_control(struct sock *sk, const char *name)
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return err;
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}
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/*
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* Linear increase during slow start
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*/
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void tcp_slow_start(struct tcp_sock *tp)
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{
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if (sysctl_tcp_abc) {
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/* RFC3465: Slow Start
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* TCP sender SHOULD increase cwnd by the number of
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* previously unacknowledged bytes ACKed by each incoming
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* acknowledgment, provided the increase is not more than L
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*/
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if (tp->bytes_acked < tp->mss_cache)
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return;
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/* We MAY increase by 2 if discovered delayed ack */
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if (sysctl_tcp_abc > 1 && tp->bytes_acked > 2*tp->mss_cache) {
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if (tp->snd_cwnd < tp->snd_cwnd_clamp)
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tp->snd_cwnd++;
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}
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}
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tp->bytes_acked = 0;
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if (tp->snd_cwnd < tp->snd_cwnd_clamp)
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tp->snd_cwnd++;
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}
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EXPORT_SYMBOL_GPL(tcp_slow_start);
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/*
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* TCP Reno congestion control
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* This is special case used for fallback as well.
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@ -115,8 +115,8 @@ int sysctl_tcp_abc = 1;
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/* Adapt the MSS value used to make delayed ack decision to the
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* real world.
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*/
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static inline void tcp_measure_rcv_mss(struct sock *sk,
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const struct sk_buff *skb)
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static void tcp_measure_rcv_mss(struct sock *sk,
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const struct sk_buff *skb)
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{
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struct inet_connection_sock *icsk = inet_csk(sk);
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const unsigned int lss = icsk->icsk_ack.last_seg_size;
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@ -246,8 +246,8 @@ static int __tcp_grow_window(const struct sock *sk, struct tcp_sock *tp,
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return 0;
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}
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static inline void tcp_grow_window(struct sock *sk, struct tcp_sock *tp,
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struct sk_buff *skb)
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static void tcp_grow_window(struct sock *sk, struct tcp_sock *tp,
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struct sk_buff *skb)
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{
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/* Check #1 */
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if (tp->rcv_ssthresh < tp->window_clamp &&
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|
|
@ -341,6 +341,26 @@ static void tcp_clamp_window(struct sock *sk, struct tcp_sock *tp)
|
|||
tp->rcv_ssthresh = min(tp->window_clamp, 2U*tp->advmss);
|
||||
}
|
||||
|
||||
|
||||
/* 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().
|
||||
*/
|
||||
void tcp_initialize_rcv_mss(struct sock *sk)
|
||||
{
|
||||
struct tcp_sock *tp = tcp_sk(sk);
|
||||
unsigned int hint = min_t(unsigned int, tp->advmss, tp->mss_cache);
|
||||
|
||||
hint = min(hint, tp->rcv_wnd/2);
|
||||
hint = min(hint, TCP_MIN_RCVMSS);
|
||||
hint = max(hint, TCP_MIN_MSS);
|
||||
|
||||
inet_csk(sk)->icsk_ack.rcv_mss = hint;
|
||||
}
|
||||
|
||||
/* Receiver "autotuning" code.
|
||||
*
|
||||
* The algorithm for RTT estimation w/o timestamps is based on
|
||||
|
|
@ -735,6 +755,27 @@ __u32 tcp_init_cwnd(struct tcp_sock *tp, struct dst_entry *dst)
|
|||
return min_t(__u32, cwnd, tp->snd_cwnd_clamp);
|
||||
}
|
||||
|
||||
/* Set slow start threshold and cwnd not falling to slow start */
|
||||
void tcp_enter_cwr(struct sock *sk)
|
||||
{
|
||||
struct tcp_sock *tp = tcp_sk(sk);
|
||||
|
||||
tp->prior_ssthresh = 0;
|
||||
tp->bytes_acked = 0;
|
||||
if (inet_csk(sk)->icsk_ca_state < TCP_CA_CWR) {
|
||||
tp->undo_marker = 0;
|
||||
tp->snd_ssthresh = inet_csk(sk)->icsk_ca_ops->ssthresh(sk);
|
||||
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);
|
||||
|
||||
tcp_set_ca_state(sk, TCP_CA_CWR);
|
||||
}
|
||||
}
|
||||
|
||||
/* Initialize metrics on socket. */
|
||||
|
||||
static void tcp_init_metrics(struct sock *sk)
|
||||
|
|
@ -2070,8 +2111,8 @@ static inline void tcp_ack_update_rtt(struct sock *sk, const int flag,
|
|||
tcp_ack_no_tstamp(sk, seq_rtt, flag);
|
||||
}
|
||||
|
||||
static inline void tcp_cong_avoid(struct sock *sk, u32 ack, u32 rtt,
|
||||
u32 in_flight, int good)
|
||||
static void tcp_cong_avoid(struct sock *sk, u32 ack, u32 rtt,
|
||||
u32 in_flight, int good)
|
||||
{
|
||||
const struct inet_connection_sock *icsk = inet_csk(sk);
|
||||
icsk->icsk_ca_ops->cong_avoid(sk, ack, rtt, in_flight, good);
|
||||
|
|
@ -2082,7 +2123,7 @@ static inline void tcp_cong_avoid(struct sock *sk, u32 ack, u32 rtt,
|
|||
* RFC2988 recommends to restart timer to now+rto.
|
||||
*/
|
||||
|
||||
static inline void tcp_ack_packets_out(struct sock *sk, struct tcp_sock *tp)
|
||||
static void tcp_ack_packets_out(struct sock *sk, struct tcp_sock *tp)
|
||||
{
|
||||
if (!tp->packets_out) {
|
||||
inet_csk_clear_xmit_timer(sk, ICSK_TIME_RETRANS);
|
||||
|
|
@ -2147,7 +2188,7 @@ static int tcp_tso_acked(struct sock *sk, struct sk_buff *skb,
|
|||
return acked;
|
||||
}
|
||||
|
||||
static inline u32 tcp_usrtt(const struct sk_buff *skb)
|
||||
static u32 tcp_usrtt(const struct sk_buff *skb)
|
||||
{
|
||||
struct timeval tv, now;
|
||||
|
||||
|
|
@ -2583,8 +2624,8 @@ void tcp_parse_options(struct sk_buff *skb, struct tcp_options_received *opt_rx,
|
|||
/* Fast parse options. This hopes to only see timestamps.
|
||||
* If it is wrong it falls back on tcp_parse_options().
|
||||
*/
|
||||
static inline int tcp_fast_parse_options(struct sk_buff *skb, struct tcphdr *th,
|
||||
struct tcp_sock *tp)
|
||||
static int tcp_fast_parse_options(struct sk_buff *skb, struct tcphdr *th,
|
||||
struct tcp_sock *tp)
|
||||
{
|
||||
if (th->doff == sizeof(struct tcphdr)>>2) {
|
||||
tp->rx_opt.saw_tstamp = 0;
|
||||
|
|
@ -2804,8 +2845,7 @@ static void tcp_fin(struct sk_buff *skb, struct sock *sk, struct tcphdr *th)
|
|||
}
|
||||
}
|
||||
|
||||
static __inline__ int
|
||||
tcp_sack_extend(struct tcp_sack_block *sp, u32 seq, u32 end_seq)
|
||||
static inline int tcp_sack_extend(struct tcp_sack_block *sp, u32 seq, u32 end_seq)
|
||||
{
|
||||
if (!after(seq, sp->end_seq) && !after(sp->start_seq, end_seq)) {
|
||||
if (before(seq, sp->start_seq))
|
||||
|
|
@ -2817,7 +2857,7 @@ tcp_sack_extend(struct tcp_sack_block *sp, u32 seq, u32 end_seq)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static inline void tcp_dsack_set(struct tcp_sock *tp, u32 seq, u32 end_seq)
|
||||
static void tcp_dsack_set(struct tcp_sock *tp, u32 seq, u32 end_seq)
|
||||
{
|
||||
if (tp->rx_opt.sack_ok && sysctl_tcp_dsack) {
|
||||
if (before(seq, tp->rcv_nxt))
|
||||
|
|
@ -2832,7 +2872,7 @@ static inline void tcp_dsack_set(struct tcp_sock *tp, u32 seq, u32 end_seq)
|
|||
}
|
||||
}
|
||||
|
||||
static inline void tcp_dsack_extend(struct tcp_sock *tp, u32 seq, u32 end_seq)
|
||||
static void tcp_dsack_extend(struct tcp_sock *tp, u32 seq, u32 end_seq)
|
||||
{
|
||||
if (!tp->rx_opt.dsack)
|
||||
tcp_dsack_set(tp, seq, end_seq);
|
||||
|
|
@ -2890,7 +2930,7 @@ static void tcp_sack_maybe_coalesce(struct tcp_sock *tp)
|
|||
}
|
||||
}
|
||||
|
||||
static __inline__ void tcp_sack_swap(struct tcp_sack_block *sack1, struct tcp_sack_block *sack2)
|
||||
static inline void tcp_sack_swap(struct tcp_sack_block *sack1, struct tcp_sack_block *sack2)
|
||||
{
|
||||
__u32 tmp;
|
||||
|
||||
|
|
@ -3455,7 +3495,7 @@ void tcp_cwnd_application_limited(struct sock *sk)
|
|||
tp->snd_cwnd_stamp = tcp_time_stamp;
|
||||
}
|
||||
|
||||
static inline int tcp_should_expand_sndbuf(struct sock *sk, struct tcp_sock *tp)
|
||||
static int tcp_should_expand_sndbuf(struct sock *sk, struct tcp_sock *tp)
|
||||
{
|
||||
/* If the user specified a specific send buffer setting, do
|
||||
* not modify it.
|
||||
|
|
@ -3502,7 +3542,7 @@ static void tcp_new_space(struct sock *sk)
|
|||
sk->sk_write_space(sk);
|
||||
}
|
||||
|
||||
static inline void tcp_check_space(struct sock *sk)
|
||||
static void tcp_check_space(struct sock *sk)
|
||||
{
|
||||
if (sock_flag(sk, SOCK_QUEUE_SHRUNK)) {
|
||||
sock_reset_flag(sk, SOCK_QUEUE_SHRUNK);
|
||||
|
|
@ -3512,7 +3552,7 @@ static inline void tcp_check_space(struct sock *sk)
|
|||
}
|
||||
}
|
||||
|
||||
static __inline__ void tcp_data_snd_check(struct sock *sk, struct tcp_sock *tp)
|
||||
static inline void tcp_data_snd_check(struct sock *sk, struct tcp_sock *tp)
|
||||
{
|
||||
tcp_push_pending_frames(sk, tp);
|
||||
tcp_check_space(sk);
|
||||
|
|
@ -3544,7 +3584,7 @@ static void __tcp_ack_snd_check(struct sock *sk, int ofo_possible)
|
|||
}
|
||||
}
|
||||
|
||||
static __inline__ void tcp_ack_snd_check(struct sock *sk)
|
||||
static inline void tcp_ack_snd_check(struct sock *sk)
|
||||
{
|
||||
if (!inet_csk_ack_scheduled(sk)) {
|
||||
/* We sent a data segment already. */
|
||||
|
|
@ -3692,8 +3732,7 @@ static int __tcp_checksum_complete_user(struct sock *sk, struct sk_buff *skb)
|
|||
return result;
|
||||
}
|
||||
|
||||
static __inline__ int
|
||||
tcp_checksum_complete_user(struct sock *sk, struct sk_buff *skb)
|
||||
static inline int tcp_checksum_complete_user(struct sock *sk, struct sk_buff *skb)
|
||||
{
|
||||
return skb->ip_summed != CHECKSUM_UNNECESSARY &&
|
||||
__tcp_checksum_complete_user(sk, skb);
|
||||
|
|
@ -4474,3 +4513,4 @@ EXPORT_SYMBOL(sysctl_tcp_abc);
|
|||
EXPORT_SYMBOL(tcp_parse_options);
|
||||
EXPORT_SYMBOL(tcp_rcv_established);
|
||||
EXPORT_SYMBOL(tcp_rcv_state_process);
|
||||
EXPORT_SYMBOL(tcp_initialize_rcv_mss);
|
||||
|
|
|
|||
|
|
@ -270,8 +270,7 @@ int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
|
|||
/*
|
||||
* This routine does path mtu discovery as defined in RFC1191.
|
||||
*/
|
||||
static inline void do_pmtu_discovery(struct sock *sk, struct iphdr *iph,
|
||||
u32 mtu)
|
||||
static void do_pmtu_discovery(struct sock *sk, struct iphdr *iph, u32 mtu)
|
||||
{
|
||||
struct dst_entry *dst;
|
||||
struct inet_sock *inet = inet_sk(sk);
|
||||
|
|
@ -662,7 +661,7 @@ static void tcp_v4_reqsk_destructor(struct request_sock *req)
|
|||
kfree(inet_rsk(req)->opt);
|
||||
}
|
||||
|
||||
static inline void syn_flood_warning(struct sk_buff *skb)
|
||||
static void syn_flood_warning(struct sk_buff *skb)
|
||||
{
|
||||
static unsigned long warntime;
|
||||
|
||||
|
|
@ -677,8 +676,8 @@ static inline void syn_flood_warning(struct sk_buff *skb)
|
|||
/*
|
||||
* Save and compile IPv4 options into the request_sock if needed.
|
||||
*/
|
||||
static inline struct ip_options *tcp_v4_save_options(struct sock *sk,
|
||||
struct sk_buff *skb)
|
||||
static struct ip_options *tcp_v4_save_options(struct sock *sk,
|
||||
struct sk_buff *skb)
|
||||
{
|
||||
struct ip_options *opt = &(IPCB(skb)->opt);
|
||||
struct ip_options *dopt = NULL;
|
||||
|
|
|
|||
|
|
@ -51,8 +51,8 @@ int sysctl_tcp_retrans_collapse = 1;
|
|||
*/
|
||||
int sysctl_tcp_tso_win_divisor = 3;
|
||||
|
||||
static inline void update_send_head(struct sock *sk, struct tcp_sock *tp,
|
||||
struct sk_buff *skb)
|
||||
static void update_send_head(struct sock *sk, struct tcp_sock *tp,
|
||||
struct sk_buff *skb)
|
||||
{
|
||||
sk->sk_send_head = skb->next;
|
||||
if (sk->sk_send_head == (struct sk_buff *)&sk->sk_write_queue)
|
||||
|
|
@ -124,8 +124,8 @@ static void tcp_cwnd_restart(struct sock *sk, struct dst_entry *dst)
|
|||
tp->snd_cwnd_used = 0;
|
||||
}
|
||||
|
||||
static inline void tcp_event_data_sent(struct tcp_sock *tp,
|
||||
struct sk_buff *skb, struct sock *sk)
|
||||
static void tcp_event_data_sent(struct tcp_sock *tp,
|
||||
struct sk_buff *skb, struct sock *sk)
|
||||
{
|
||||
struct inet_connection_sock *icsk = inet_csk(sk);
|
||||
const u32 now = tcp_time_stamp;
|
||||
|
|
@ -142,7 +142,7 @@ static inline void tcp_event_data_sent(struct tcp_sock *tp,
|
|||
icsk->icsk_ack.pingpong = 1;
|
||||
}
|
||||
|
||||
static __inline__ void tcp_event_ack_sent(struct sock *sk, unsigned int pkts)
|
||||
static inline void tcp_event_ack_sent(struct sock *sk, unsigned int pkts)
|
||||
{
|
||||
tcp_dec_quickack_mode(sk, pkts);
|
||||
inet_csk_clear_xmit_timer(sk, ICSK_TIME_DACK);
|
||||
|
|
@ -212,7 +212,7 @@ void tcp_select_initial_window(int __space, __u32 mss,
|
|||
* value can be stuffed directly into th->window for an outgoing
|
||||
* frame.
|
||||
*/
|
||||
static __inline__ u16 tcp_select_window(struct sock *sk)
|
||||
static u16 tcp_select_window(struct sock *sk)
|
||||
{
|
||||
struct tcp_sock *tp = tcp_sk(sk);
|
||||
u32 cur_win = tcp_receive_window(tp);
|
||||
|
|
@ -250,6 +250,75 @@ static __inline__ u16 tcp_select_window(struct sock *sk)
|
|||
return new_win;
|
||||
}
|
||||
|
||||
static 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++ = 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 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));
|
||||
}
|
||||
|
||||
/* This routine actually transmits TCP packets queued in by
|
||||
* tcp_do_sendmsg(). This is used by both the initial
|
||||
|
|
@ -724,7 +793,7 @@ unsigned int tcp_current_mss(struct sock *sk, int large_allowed)
|
|||
|
||||
/* Congestion window validation. (RFC2861) */
|
||||
|
||||
static inline void tcp_cwnd_validate(struct sock *sk, struct tcp_sock *tp)
|
||||
static void tcp_cwnd_validate(struct sock *sk, struct tcp_sock *tp)
|
||||
{
|
||||
__u32 packets_out = tp->packets_out;
|
||||
|
||||
|
|
@ -773,7 +842,7 @@ static inline unsigned int tcp_cwnd_test(struct tcp_sock *tp, struct sk_buff *sk
|
|||
/* This must be invoked the first time we consider transmitting
|
||||
* SKB onto the wire.
|
||||
*/
|
||||
static inline int tcp_init_tso_segs(struct sock *sk, struct sk_buff *skb, unsigned int mss_now)
|
||||
static int tcp_init_tso_segs(struct sock *sk, struct sk_buff *skb, unsigned int mss_now)
|
||||
{
|
||||
int tso_segs = tcp_skb_pcount(skb);
|
||||
|
||||
|
|
@ -1794,7 +1863,7 @@ struct sk_buff * tcp_make_synack(struct sock *sk, struct dst_entry *dst,
|
|||
/*
|
||||
* Do all connect socket setups that can be done AF independent.
|
||||
*/
|
||||
static inline void tcp_connect_init(struct sock *sk)
|
||||
static void tcp_connect_init(struct sock *sk)
|
||||
{
|
||||
struct dst_entry *dst = __sk_dst_get(sk);
|
||||
struct tcp_sock *tp = tcp_sk(sk);
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user