netdev - Re: [RFC] netdevice ops

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Message-ID: <p737ir4ew2t.fsf@bingen.suse.de>
Date:	19 May 2007 16:18:02 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Stephen Hemminger <shemminger@...ux-foundation.org>
Cc:	David Miller <davem@...emloft.net>, jgarzik@...ox.com,
	netdev@...r.kernel.org
Subject: Re: [RFC] netdevice ops

Stephen Hemminger <shemminger@...ux-foundation.org> writes:
> 
> I would think a non-conditional deref would be easily pipelined.
> If the net_device struct was more cache dense, it probably would
> even out.

It might be a good idea to consider strategic prefetch points for it.

e.g. TCP executes quite a lot of code until it finally decides to dev_queue_xmit.
Prefetching before that might be a good idea.

-Andi
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