netdev - Re: [PATCH 1/4] flow: virtualize flow cache entry methods

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Date:	Sat, 3 Apr 2010 16:36:09 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Timo Teras <timo.teras@....fi>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH 1/4] flow: virtualize flow cache entry methods

On Sat, Apr 03, 2010 at 11:38:57AM +0800, Herbert Xu wrote:
> 
> With repsect to removing the cache flush upon policy removal,
> what takes care of the timely purging of the corresponding cache
> entries if no new traffic comes through?

In fact this change would seem to render the existing bundle
pruning mechanism when devices are unregistered ineffective.

xfrm_prune_bundles walks through active policy lists to find
the bundles to purge.  However, if a policy has been deleted
while a bundle referencing it is still in the cache, that bundle
will not be pruned.

Cheers,
-- 
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Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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