Merge branch 'tcp_cong_ctrl_refactoring'

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Yuchung Cheng says:

====================
tcp: congestion control refactoring

This patch set refactors the sequence of congestion control,
loss recovery, and transmission logic in TCP ack processing.

The design goal is to decouple and sequence them in the following order:

  0. ACK accounting: free or tag sent packets [unchanged]

  1. loss recovery: identify lost/ecn packets and update congestion state

  2. congestion control: up/down cwnd and pacing rate based on (1)

  3. transmission: send new or retransmit old based on (1) and (2)

This refactoring makes the cwnd changes more clear because it's done
in one place. The packet accounting is also more robust especially
for connections that do not support SACK. Patch 1-4 and 6 are
refactoring and patch 5 improves TCP performance under reordering.
====================

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

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This commit is contained in:

David S. Miller 2016-02-07 14:09:59 -05:00

parent 3575dbf2cb d452e6caf8

commit ffeb6437f0

2 changed files with 98 additions and 52 deletions

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1

include/linux/tcp.h

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149

net/ipv4/tcp_input.c

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