From: Ilpo Järvinen Date: Sat, 28 Feb 2009 04:44:29 +0000 (+0000) Subject: tcp: deferring in middle of queue makes very little sense X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=62ad27619cbcf23fb8581ae72f3806c1d90a861d;p=openwrt%2Fstaging%2Fblogic.git 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 Signed-off-by: David S. Miller --- diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index 2471cd4f66db..fa3c81aa4e6a 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -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);