netdev - Re: [PATCH] ipv4: fix ipsec forward performance regression

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Date:	Thu, 3 Nov 2011 13:58:51 -0500
From:	Kim Phillips <kim.phillips@...escale.com>
To:	David Miller <davem@...emloft.net>
CC:	<stable@...nel.org>, <eric.dumazet@...il.com>,
	<zheng.z.yan@...el.com>, <netdev@...r.kernel.org>
Subject: Re: [PATCH] ipv4: fix ipsec forward performance regression

On Tue, 1 Nov 2011 20:34:30 -0400
David Miller <davem@...emloft.net> wrote:

> From: Kim Phillips <kim.phillips@...escale.com>
> Date: Tue, 1 Nov 2011 18:50:22 -0500
> 
> > -stable maintainers, please consider the following two upstream
> > commits for inclusion in upcoming v3.0.x [1] stable releases:
> 
> I submit networking stable fixes as needed, so please make such
> requests to me.
> 
> I haven't submitted this change yet because I want it to sit a bit
> longer in Linus's tree to make sure there aren't any unwanted
> side-effects.

I see b732339 (ipv4: fix ipsec forward performance regression) has
been added to the 3.0- and 3.1-stable trees.

b732339 increases IPSec fwding performance from 0.2kpps to ~3.5kpps.

However, adding upstream commit aa1c366 (net: Handle different key
sizes between address families in flow cache) brings performance
back up to 2.6.38 levels, i.e., ~44kpps.

So can aa1c366 also be queued to the v2.6.39 and v3.0 stable
trees?

Thanks,

Kim

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