| commit | 15ecbe94a45ef88491ca459b26efdd02f91edb6d | |
| author | Eric Dumazet <edumazet@google.com> | |
| Wed, 27 Jun 2018 15:47:21 +0000 (27 08:47 -0700) | ||
| committer | David S. Miller <davem@davemloft.net> | |
| Thu, 28 Jun 2018 13:01:04 +0000 (28 22:01 +0900) | ||
| tree | def3573e62862a41bb840c8fcdca92665484131c | treesnapshot (tar.gz zip) |
| parent | 8e75887d321d102200abf3a9fa621e2c10ff4cc5 | commitdiff |
tcp: add one more quick ack after after ECN events
Larry Brakmo proposal ( https://patchwork.ozlabs.org/patch/935233/
tcp: force cwnd at least 2 in tcp_cwnd_reduction) made us rethink
about our recent patch removing ~16 quick acks after ECN events.
tcp_enter_quickack_mode(sk, 1) makes sure one immediate ack is sent,
but in the case the sender cwnd was lowered to 1, we do not want
to have a delayed ack for the next packet we will receive.
Fixes: 522040ea5fdd ("tcp: do not aggressively quick ack after ECN events")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Neal Cardwell <ncardwell@google.com>
Cc: Lawrence Brakmo <brakmo@fb.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Larry Brakmo proposal ( https://patchwork.ozlabs.org/patch/935233/
tcp: force cwnd at least 2 in tcp_cwnd_reduction) made us rethink
about our recent patch removing ~16 quick acks after ECN events.
tcp_enter_quickack_mode(sk, 1) makes sure one immediate ack is sent,
but in the case the sender cwnd was lowered to 1, we do not want
to have a delayed ack for the next packet we will receive.
Fixes: 522040ea5fdd ("tcp: do not aggressively quick ack after ECN events")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Neal Cardwell <ncardwell@google.com>
Cc: Lawrence Brakmo <brakmo@fb.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| net/ipv4/tcp_input.c | diffblobblamehistory |