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authorDavid S. Miller <davem@davemloft.net>2006-03-11 18:51:49 -0800
committerDavid S. Miller <davem@davemloft.net>2006-03-11 18:51:49 -0800
commitba244fe9005323452428fee4b4b7d0c70a06b627 (patch)
treea2f64703eeb1cae57ea3d4b5d2dd481614ae82d1 /net/ipv4
parentc12743764129e40dc8461afc1096cf175c7c25f2 (diff)
downloadop-kernel-dev-ba244fe9005323452428fee4b4b7d0c70a06b627.zip
op-kernel-dev-ba244fe9005323452428fee4b4b7d0c70a06b627.tar.gz
[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 <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/tcp_output.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index a7623ea..9f498a6 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);
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