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| author | David S. Miller <davem@sunset.davemloft.net> | 2007-04-09 13:23:14 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-04-09 13:31:15 -0700 |
| commit | 15d33c070ddde99f7368e6b17b71d22c866f97d9 (patch) | |
| tree | 00e779b01fb3c48e61b3ccc4de8f082e1b929cc4 /net/ipv4/tcp_output.c | |
| parent | 699784b7614ce61b16a075445b8e5b6c379c5086 (diff) | |
| download | lwn-15d33c070ddde99f7368e6b17b71d22c866f97d9.tar.gz lwn-15d33c070ddde99f7368e6b17b71d22c866f97d9.zip | |
[TCP]: slow_start_after_idle should influence cwnd validation too
For the cases that slow_start_after_idle are meant to deal
with, it is almost a certainty that the congestion window
tests will think the connection is application limited and
we'll thus decrease the cwnd there too. This defeats the
whole point of setting slow_start_after_idle to zero.
So test it there too.
We do not cancel out the entire tcp_cwnd_validate() function
so that if the sysctl is changed we still have the validation
state maintained.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_output.c')
| -rw-r--r-- | net/ipv4/tcp_output.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index 688b95594f2e..3c24881f2a65 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -943,7 +943,8 @@ static void tcp_cwnd_validate(struct sock *sk, struct tcp_sock *tp) if (tp->packets_out > tp->snd_cwnd_used) tp->snd_cwnd_used = tp->packets_out; - if ((s32)(tcp_time_stamp - tp->snd_cwnd_stamp) >= inet_csk(sk)->icsk_rto) + if (sysctl_tcp_slow_start_after_idle && + (s32)(tcp_time_stamp - tp->snd_cwnd_stamp) >= inet_csk(sk)->icsk_rto) tcp_cwnd_application_limited(sk); } } |