From: John Heffner Date: Tue, 29 Apr 2008 10:13:02 +0000 (-0700) Subject: tcp: Allow send-limited cwnd to grow up to max_burst when gso disabled X-Git-Tag: v2.6.26-rc1~104^2~18 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=ce447eb91409225f8a488f6b7b2a1bdf7b2d884f;p=karo-tx-linux.git tcp: Allow send-limited cwnd to grow up to max_burst when gso disabled This changes the logic in tcp_is_cwnd_limited() so that cwnd may grow up to tcp_max_burst() even when sk_can_gso() is false, or when sysctl_tcp_tso_win_divisor != 0. Signed-off-by: John Heffner Signed-off-by: David S. Miller --- diff --git a/net/ipv4/tcp_cong.c b/net/ipv4/tcp_cong.c index 3a6be23d222f..bfb1996bd99f 100644 --- a/net/ipv4/tcp_cong.c +++ b/net/ipv4/tcp_cong.c @@ -285,14 +285,11 @@ int tcp_is_cwnd_limited(const struct sock *sk, u32 in_flight) if (in_flight >= tp->snd_cwnd) return 1; - if (!sk_can_gso(sk)) - return 0; - left = tp->snd_cwnd - in_flight; - if (sysctl_tcp_tso_win_divisor) - return left * sysctl_tcp_tso_win_divisor < tp->snd_cwnd; - else - return left <= tcp_max_burst(tp); + if (sk_can_gso(sk) && + left * sysctl_tcp_tso_win_divisor < tp->snd_cwnd) + return 1; + return left <= tcp_max_burst(tp); } EXPORT_SYMBOL_GPL(tcp_is_cwnd_limited);