On Sun, Jul 26, 2015 at 3:45 AM, Eric Dumazet <[email protected]> wrote: > From: Eric Dumazet <[email protected]> > > While doing experiments with reordering resilience, we found > linux senders were not able to send at full speed under reordering, > because every incoming SACK was releasing one MSS. > > This patch removes the limitation, as we did for CWR state > in commit a0ea700e409 ("tcp: tso: allow CA_CWR state in > tcp_tso_should_defer()") > > Neal Cardwell had a concern about limited transmit so > Yuchung conducted experiments on GFE and found nothing > worth adding an extra check on fast path : > > if (icsk->icsk_ca_state == TCP_CA_Disorder && > tcp_sk(sk)->reordering == sysctl_tcp_reordering) > goto send_now; > > Signed-off-by: Eric Dumazet <[email protected]> > Signed-off-by: Yuchung Cheng <[email protected]> > Cc: Neal Cardwell <[email protected]>
Acked-by: Neal Cardwell <[email protected]> Looks good to me. Thanks, Eric. And thanks, Yuchung, for running the experiment! neal -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
