netdev - Re: [PATCH net-next 0/6] tcp: congestion control refactoring

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Message-Id: <20160207.141059.791432860051131378.davem@davemloft.net>
Date:	Sun, 07 Feb 2016 14:10:59 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	ycheng@...gle.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH net-next 0/6] tcp: congestion control refactoring

From: Yuchung Cheng <ycheng@...gle.com>
Date: Tue,  2 Feb 2016 10:33:03 -0800

> 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.

This series looks really nice, applied, thanks!