From: David S. Miller Date: Sun, 7 Feb 2016 19:09:59 +0000 (-0500) Subject: Merge branch 'tcp_cong_ctrl_refactoring' X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=ffeb6437f018f072a330ad5911036fd020b35ac3;p=deliverable%2Flinux.git Merge branch 'tcp_cong_ctrl_refactoring' 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 --- ffeb6437f018f072a330ad5911036fd020b35ac3