netdev - Re: [PATCH 2/7] flow: structurize flow cache

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Date:	Tue, 30 Mar 2010 15:02:42 +0300
From:	Timo Teräs <timo.teras@....fi>
To:	Herbert Xu <herbert@...dor.apana.org.au>
CC:	netdev@...r.kernel.org
Subject: Re: [PATCH 2/7] flow: structurize flow cache

Herbert Xu wrote:
> On Mon, Mar 29, 2010 at 05:12:39PM +0300, Timo Teras wrote:
>> Group all per-cpu data to one structure instead of having many
>> globals. Also prepare the internals so that we can have multiple
>> instances of the flow cache if needed.
> 
> Grouping everything together looks sane.  But adding the flow
> cache pointer to everything seems to be unnecessary.  Why would
> we need multiple flow caches?

Just a precaution since it doable cheaply.

If we want generic flow cache, we might want to have multiple
instance in future. It might also make sense to have per-net
flow cache.
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