From: Eric Dumazet <eduma...@google.com> Date: Wed, 27 Jun 2018 08:47:21 -0700
> 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 <eduma...@google.com> > Reported-by: Neal Cardwell <ncardw...@google.com> > Cc: Lawrence Brakmo <bra...@fb.com> Applied.
