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Date:	Wed, 17 Mar 2010 21:07:04 +0800
From:	Herbert Xu <>
To:	Timo Teras <>
Subject: Re: [PATCH] xfrm: cache bundle lookup results in flow cache

On Mon, Mar 15, 2010 at 02:20:10PM +0200, Timo Teras wrote:
> Instead of doing O(n) xfrm_find_bundle() call per-packet, cache
> the previous lookup results in flow cache. The flow cache is
> updated to be per-netns and more generic.

This only works well if the traffic doesn't switch bundles much.
But if that were the case then the number of bundles is likely
to be small anyway.

IOW I think if we're doing this then we should go the whole
distance and directly cache bundles instead of policies in the
flow cache.

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