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| author | Eric Dumazet <edumazet@google.com> | 2017-12-06 11:08:19 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-12-07 14:31:03 -0500 |
| commit | 8632385022f2b05a6ca0b9e0f95575865de0e2ce (patch) | |
| tree | 0d034255e3381ca1f3e797b712c9da9198fd3b3c /net | |
| parent | 6e237d099fac1f73a7b6d7287bb9191f29585a4e (diff) | |
| download | linux-8632385022f2b05a6ca0b9e0f95575865de0e2ce.tar.gz linux-8632385022f2b05a6ca0b9e0f95575865de0e2ce.tar.bz2 linux-8632385022f2b05a6ca0b9e0f95575865de0e2ce.zip | |
tcp: use current time in tcp_rcv_space_adjust()
When I switched rcv_rtt_est to high resolution timestamps, I forgot
that tp->tcp_mstamp needed to be refreshed in tcp_rcv_space_adjust()
Using an old timestamp leads to autotuning lags.
Fixes: 645f4c6f2ebd ("tcp: switch rcv_rtt_est and rcvq_space to high resolution timestamps")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Wei Wang <weiwan@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/tcp_input.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 734cfc8ff76e..514c00732988 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -579,6 +579,7 @@ void tcp_rcv_space_adjust(struct sock *sk) int time; int copied; + tcp_mstamp_refresh(tp); time = tcp_stamp_us_delta(tp->tcp_mstamp, tp->rcvq_space.time); if (time < (tp->rcv_rtt_est.rtt_us >> 3) || tp->rcv_rtt_est.rtt_us == 0) return; |