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

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Message-Id: <20070125.130111.26966608.davem@davemloft.net>
Date:	Thu, 25 Jan 2007 13:01:11 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	kadlec@...ckhole.kfki.hu
Cc:	netfilter-devel@...ts.netfilter.org, netdev@...r.kernel.org
Subject: Re: owner-Match in 2.6.20-rc5 (fwd)

From: Jozsef Kadlecsik <kadlec@...ckhole.kfki.hu>
Date: Thu, 25 Jan 2007 21:31:56 +0100 (CET)

> 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.
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