From ba244fe9005323452428fee4b4b7d0c70a06b627 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Sat, 11 Mar 2006 18:51:49 -0800 Subject: [PATCH] [TCP]: Fix tcp_tso_should_defer() when limit>=65536 That's >= a full sized TSO frame, so we should always return 0 in that case. Based upon a report and initial patch from Lachlan Andrew, final patch suggested by Herbert Xu. Signed-off-by: David S. Miller --- net/ipv4/tcp_output.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index a7623ead39a8..9f498a6c8895 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -1036,6 +1036,10 @@ static int tcp_tso_should_defer(struct sock *sk, struct tcp_sock *tp, struct sk_ limit = min(send_win, cong_win); + /* If a full-sized TSO skb can be sent, do it. */ + if (limit >= 65536) + return 0; + if (sysctl_tcp_tso_win_divisor) { u32 chunk = min(tp->snd_wnd, tp->snd_cwnd * tp->mss_cache);