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Date: Mon, 28 Apr 2008 16:22:30 -0700 From: John Heffner <johnwheffner@...il.com> To: davem@...emloft.net Cc: netdev@...r.kernel.org, John Heffner <johnwheffner@...il.com> Subject: [PATCH 1/2] [NET]: 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 <johnwheffner@...il.com> --- net/ipv4/tcp_cong.c | 11 ++++------- 1 files changed, 4 insertions(+), 7 deletions(-) diff --git a/net/ipv4/tcp_cong.c b/net/ipv4/tcp_cong.c index 3a6be23..bfb1996 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); -- 1.5.2.5 ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________ -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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