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[TCP]: Abstract out all write queue operations.

Browse source 
This allows the write queue implementation to be changed,
for example, to one which allows fast interval searching.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2007-03-07 12:12:44 -08:00
parent 02ea4923b4
commit fe067e8ab5
7 changed files with 221 additions and 117 deletions
Download patch file Download diff file Expand all files Collapse all files

10
net/ipv4/tcp_timer.c
View file

@ -233,7 +233,7 @@ static void tcp_probe_timer(struct sock *sk)
struct tcp_sock *tp = tcp_sk(sk);
int max_probes;
if (tp->packets_out || !sk->sk_send_head) {
if (tp->packets_out || !tcp_send_head(sk)) {
icsk->icsk_probes_out = 0;
return;
}
@ -284,7 +284,7 @@ static void tcp_retransmit_timer(struct sock *sk)
if (!tp->packets_out)
goto out;
BUG_TRAP(!skb_queue_empty(&sk->sk_write_queue));
BUG_TRAP(!tcp_write_queue_empty(sk));
if (!tp->snd_wnd && !sock_flag(sk, SOCK_DEAD) &&
!((1 << sk->sk_state) & (TCPF_SYN_SENT | TCPF_SYN_RECV))) {
@ -306,7 +306,7 @@ static void tcp_retransmit_timer(struct sock *sk)
goto out;
}
tcp_enter_loss(sk, 0);
tcp_retransmit_skb(sk, skb_peek(&sk->sk_write_queue));
tcp_retransmit_skb(sk, tcp_write_queue_head(sk));
__sk_dst_reset(sk);
goto out_reset_timer;
}
@ -341,7 +341,7 @@ static void tcp_retransmit_timer(struct sock *sk)
tcp_enter_loss(sk, 0);
}
if (tcp_retransmit_skb(sk, skb_peek(&sk->sk_write_queue)) > 0) {
if (tcp_retransmit_skb(sk, tcp_write_queue_head(sk)) > 0) {
/* Retransmission failed because of local congestion,
* do not backoff.
*/
@ -482,7 +482,7 @@ static void tcp_keepalive_timer (unsigned long data)
elapsed = keepalive_time_when(tp);
/* It is alive without keepalive 8) */
if (tp->packets_out || sk->sk_send_head)
if (tp->packets_out || tcp_send_head(sk))
goto resched;
elapsed = tcp_time_stamp - tp->rcv_tstamp;