netdev - Re: owner-Match in 2.6.20-rc5 (fwd)

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Date:	Thu, 25 Jan 2007 14:01:49 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	jengelh@...ux01.gwdg.de
Cc:	kadlec@...ckhole.kfki.hu, netdev@...r.kernel.org,
	netfilter-devel@...ts.netfilter.org
Subject: Re: owner-Match in 2.6.20-rc5 (fwd)

From: Jan Engelhardt <jengelh@...ux01.gwdg.de>
Date: Thu, 25 Jan 2007 22:07:07 +0100 (MET)

> 
> >> The report below was posted on the netfilter user list. Isn't there any 
> >> ill side effect by reverting the change?
> >
> >Performance regression :-(
> >
> >This optimization saves a whole handful of heavy atomic operations in
> >the packet transmit path of TCP.
> >
> >As I understand it, the owner-Match is not in the upstream tree, and
> >it's the only thing that cares, so I see no reason to cater for it.
> 
> For me, it's there.
> -rw-r--r-- 1 jengelh users 2247 Jan 25 21:37
> /erk/kernel/linux-2.6.20-rc6/net/ipv4/netfilter/ipt_owner.c

Ok, I'll see what I can do about this :-)
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