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author | David S. Miller <davem@davemloft.net> | 2017-08-03 15:38:31 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2017-08-03 15:38:31 -0700 |
commit | 337f1b07db97b75bfd91eb333ff3ec3b82c5b1e6 (patch) | |
tree | 423c7984d203560f17751f0ba8ba9f0a8ff2ae4e /drivers | |
parent | b91d532928dff2141ea9c107c3e73104d9843767 (diff) | |
parent | df92c8394e6ea0469e8056946ef8add740ab8046 (diff) |
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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