netdev - Re: gso: Attempt to handle mega-GRO packets

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Date:	Thu, 7 Nov 2013 09:00:37 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Ben Hutchings <bhutchings@...arflare.com>,
	David Miller <davem@...emloft.net>,
	christoph.paasch@...ouvain.be, netdev@...r.kernel.org,
	hkchu@...gle.com, mwdalton@...gle.com
Subject: Re: gso: Attempt to handle mega-GRO packets

On Wed, Nov 06, 2013 at 04:56:03PM -0800, Eric Dumazet wrote:
> On Thu, 2013-11-07 at 08:47 +0800, Herbert Xu wrote:
> > On Wed, Nov 06, 2013 at 04:15:21PM -0800, Eric Dumazet wrote:
> > >
> > > Here is the patch I came into (I tested it and it works very fine)
> > 
> > Thanks.  However, unless I'm missing something aren't you now
> > copying every linear skb frag_list?  With the current code we
> > just do a clone and add the headers.
> 
> No copy at all.
> 
> As explained, all RX skb are now backed to a page frag.  (see
> skb->head_frag)

Even if we have called pskb_expand_head on it?

Cheers,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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