Commit ce447eb9 authored by John Heffner's avatar John Heffner Committed by David S. Miller

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: default avatarJohn Heffner <johnwheffner@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d0313587
...@@ -285,13 +285,10 @@ int tcp_is_cwnd_limited(const struct sock *sk, u32 in_flight) ...@@ -285,13 +285,10 @@ int tcp_is_cwnd_limited(const struct sock *sk, u32 in_flight)
if (in_flight >= tp->snd_cwnd) if (in_flight >= tp->snd_cwnd)
return 1; return 1;
if (!sk_can_gso(sk))
return 0;
left = tp->snd_cwnd - in_flight; left = tp->snd_cwnd - in_flight;
if (sysctl_tcp_tso_win_divisor) if (sk_can_gso(sk) &&
return left * sysctl_tcp_tso_win_divisor < tp->snd_cwnd; left * sysctl_tcp_tso_win_divisor < tp->snd_cwnd)
else return 1;
return left <= tcp_max_burst(tp); return left <= tcp_max_burst(tp);
} }
EXPORT_SYMBOL_GPL(tcp_is_cwnd_limited); EXPORT_SYMBOL_GPL(tcp_is_cwnd_limited);
......
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