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Date: Tue, 27 Feb 2001 01:03:36 +0100
From: Andi Kleen <ak@suse.de>
To: "David S. Miller" <davem@redhat.com>
Cc: Andi Kleen <ak@suse.de>, Jeff Garzik <jgarzik@mandrakesoft.com>,
        linux-kernel@vger.kernel.org
Subject: Re: New net features for added performance
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In-Reply-To: <15002.60239.486243.682681@pizda.ninka.net>; from davem@redhat.com on Mon, Feb 26, 2001 at 03:48:31PM -0800
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On Mon, Feb 26, 2001 at 03:48:31PM -0800, David S. Miller wrote:
> 
> Andi Kleen writes:
>  > 4) Better support for aligned RX by only copying the header
> 
> Andi you can make this now:
> 
> 1) Add new "post-header data pointer" field in SKB.

That would imply to let the drivers parse all headers to figure out the length.
I think it's better to have a "header base" and "data base" pointer.
The driver would just copy some standard size that likely contains all of
the header 
When you're finished with the header use 
skb->database+(skb->hdrptr-skb->hdrbase) to get the start of data. 

Or did I misunderstand you?



> 3) Enforce correct usage of it in all the networking :-)

,) -- the tricky part.


-Andi
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