tcp: enable RACK loss detection to trigger recovery

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This patch changes two things:

1. Start fast recovery with RACK in addition to other heuristics
   (e.g., DUPACK threshold, FACK). Prior to this change RACK
   is enabled to detect losses only after the recovery has
   started by other algorithms.

2. Disable TCP early retransmit. RACK subsumes the early retransmit
   with the new reordering timer feature. A latter patch in this
   series removes the early retransmit code.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

This commit is contained in:

Yuchung Cheng 2017-01-12 22:11:36 -08:00 • committed by David S. Miller

parent 98e36d449c

commit a0370b3f3f

3 changed files with 35 additions and 21 deletions

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11

include/net/tcp.h

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29

net/ipv4/tcp_input.c

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16

net/ipv4/tcp_recovery.c

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