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tcp: deferring in middle of queue makes very little sense 

If skb can be sent right away, we certainly should do that
if it's in the middle of the queue because it won't get
more data into it.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ilpo Järvinen 2009-02-28 04:44:29 +00:00 committed by David S. Miller
parent 59a08cba6a
commit 62ad27619c
1 changed files with 4 additions and 0 deletions
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4
net/ipv4/tcp_output.c
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@ -1356,6 +1356,10 @@ static int tcp_tso_should_defer(struct sock *sk, struct sk_buff *skb)
if (limit >= sk->sk_gso_max_size)
goto send_now;
/* Middle in queue won't get any more data, full sendable already? */
if ((skb != tcp_write_queue_tail(sk)) && (limit >= skb->len))
goto send_now;
if (sysctl_tcp_tso_win_divisor) {
u32 chunk = min(tp->snd_wnd, tp->snd_cwnd * tp->mss_cache);