netdev - Re: [PATCH] xfrm: cache bundle lookup results in flow cache

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Message-ID: <20100322014010.GA14182@gondor.apana.org.au>
Date:	Mon, 22 Mar 2010 09:40:10 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	David Miller <davem@...emloft.net>
Cc:	timo.teras@....fi, netdev@...r.kernel.org
Subject: Re: [PATCH] xfrm: cache bundle lookup results in flow cache

On Sun, Mar 21, 2010 at 06:36:56PM -0700, David Miller wrote:
>
> And as a consequence, making the xfrm_dst's be per-cpu would mess with
> route metrics for TCP.

Actually xfrm_dst currently relies on IPv4 rt objects to maintain
the metrics.  So as long as IPv4 routes are still global, then the
metrics won't be affected as far as can I see.

Did I miss something?

> I'm willing to consider this seriously, to be honest.

I would consider that too.  But right now I'm just looking for
the bare minimum to solve the problem at hand :)

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