Commit 246eb2af authored Apr 29, 2008 by John Heffner Committed by David S. Miller Apr 29, 2008

tcp: Limit cwnd growth when deferring for GSO



This fixes inappropriately large cwnd growth on sender-limited flows
when GSO is enabled, limiting cwnd growth to 64k.

Signed-off-by: John Heffner <johnwheffner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent ce447eb9

net/ipv4/tcp_cong.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -287,7 +287,8 @@ int tcp_is_cwnd_limited(const struct sock *sk, u32 in_flight)

		left = tp->snd_cwnd - in_flight;
		if (sk_can_gso(sk) &&
		left * sysctl_tcp_tso_win_divisor < tp->snd_cwnd)
		left * sysctl_tcp_tso_win_divisor < tp->snd_cwnd &&
		left * tp->mss_cache < sk->sk_gso_max_size)
		return 1;
		return left <= tcp_max_burst(tp);
		}