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tcp: deferring in middle of queue makes very little sense

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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);