netdev - Re: [PATCH net-next] tcp: do not set queue

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Message-Id: <20151018.222615.1410928614255717702.davem@davemloft.net>
Date:	Sun, 18 Oct 2015 22:26:15 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH net-next] tcp: do not set queue_mapping on SYNACK

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Fri, 16 Oct 2015 13:00:01 -0700

> From: Eric Dumazet <edumazet@...gle.com>
> 
> At the time of commit fff326990789 ("tcp: reflect SYN queue_mapping into
> SYNACK packets") we had little ways to cope with SYN floods.
> 
> We no longer need to reflect incoming skb queue mappings, and instead
> can pick a TX queue based on cpu cooking the SYNACK, with normal XPS
> affinities.
> 
> Note that all SYNACK retransmits were picking TX queue 0, this no longer
> is a win given that SYNACK rtx are now distributed on all cpus.
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Applied, thanks Eric.
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