netdev - Re: LRO restructuring?

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Message-ID: <20080812005033.GA18547@gondor.apana.org.au>
Date:	Tue, 12 Aug 2008 08:50:33 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Andrew Gallatin <gallatin@...i.com>
Cc:	netdev <netdev@...r.kernel.org>, Brice Goglin <brice@...i.com>
Subject: Re: LRO restructuring?

On Mon, Aug 11, 2008 at 09:30:33AM -0400, Andrew Gallatin wrote:
>
> For lro_receive_frags() based LRO, it would be ideal to locate the
> header in place in the frag via the mac_hdr argument to the
> get_frag_header() callback.  Eg, I'm hoping that neither the driver
> nor the LRO module will need to allocate extra memory per frame and
> copy the headers to it in the common case when forwarding is
> not enabled.  That would add quite a bit of overhead.

You don't have to save the whole thing, just save enough so we
can easily/exactly reconstruct it on output, i.e., save the lengths.

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