From: Yuchung Cheng <ych...@google.com> Date: Wed, 31 May 2017 11:30:53 -0700
> Currently when a data packet is retransmitted, we do not compute an > RTT sample for congestion control due to Kern's check. Therefore the > congestion control that uses RTT signals may not receive any update > during loss recovery which could last many round trips. For example, > BBR and Vegas may not be able to update its min RTT estimation if the > network path has shortened until it recovers from losses. This patch > mitigates that by using TCP timestamp options for RTT measurement > for congestion control. Note that we already use timestamps for > RTT estimation. > > Signed-off-by: Yuchung Cheng <ych...@google.com> > Signed-off-by: Soheil Hassas Yeganeh <soh...@google.com> > Signed-off-by: Neal Cardwell <ncardw...@google.com> > Signed-off-by: Eric Dumazet <eduma...@google.com> Also applied, thank you.
