From: David S. Miller <davem@davemloft.net>
Date: Thu, 3 Aug 2017 22:38:31 +0000 (-0700)
Subject: Merge branch 'tcp-xmit-timer-rearming'
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=337f1b07db97b75bfd91eb333ff3ec3b82c5b1e6;p=openwrt%2Fstaging%2Fblogic.git

Merge branch 'tcp-xmit-timer-rearming'

Neal Cardwell says:

====================
tcp: fix xmit timer rearming to avoid stalls

This patch series is a bug fix for a TCP loss recovery performance bug
reported independently in recent netdev threads:

 (i)  July 26, 2017: netdev thread "TCP fast retransmit issues"
 (ii) July 26, 2017: netdev thread:
       "[PATCH V2 net-next] TLP: Don't reschedule PTO when there's one
       outstanding TLP retransmission"

Many thanks to Klavs Klavsen and Mao Wenan for the detailed reports,
traces, and packetdrill test cases, which enabled us to root-cause
this issue and verify the fix.

- v1 -> v2:
 - In patch 2/3, changed an unclear comment in the pre-existing code
   in tcp_schedule_loss_probe() to be more clear (thanks to Eric Dumazet
   for suggesting we improve this).
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
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337f1b07db97b75bfd91eb333ff3ec3b82c5b1e6