tree 398091b1629212ad6600da508dd0b41a1cbe0385
parent 81d1a366ff814211f3169e6b3e2c9eea682a679e
author Artem Germanov <agermanov@anchorfree.com> 1473270576 -0700
committer David S. Miller <davem@davemloft.net> 1473380172 -0700

tcp: cwnd does not increase in TCP YeAH

Commit 76174004a0f19785a328f40388e87e982bbf69b9
(tcp: do not slow start when cwnd equals ssthresh )
introduced regression in TCP YeAH. Using 100ms delay 1% loss virtual
ethernet link kernel 4.2 shows bandwidth ~500KB/s for single TCP
connection and kernel 4.3 and above (including 4.8-rc4) shows bandwidth
~100KB/s.
   That is caused by stalled cwnd when cwnd equals ssthresh. This patch
fixes it by proper increasing cwnd in this case.

Signed-off-by: Artem Germanov <agermanov@anchorfree.com>
Acked-by: Dmitry Adamushko <d.adamushko@anchorfree.com>
Signed-off-by: David S. Miller <davem@davemloft.net>