netdev - Re: [PATCH 3/3] chelsio: more receive cleanup

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Message-ID: <20061216002604.GA11284@electric-eye.fr.zoreil.com>
Date:	Sat, 16 Dec 2006 01:26:04 +0100
From:	Francois Romieu <romieu@...zoreil.com>
To:	Stephen Hemminger <shemminger@...l.org>
Cc:	Jeff Garzik <jgarzik@...ox.com>, netdev@...r.kernel.org
Subject: Re: [PATCH 3/3] chelsio: more receive cleanup

Stephen Hemminger <shemminger@...l.org> :
> Francois Romieu <romieu@...zoreil.com> wrote:
[...]
> Why, you can't predict copybreak on off

Plain gut feeling. I'd rather spend extra cycles on small packets (whose
allocation is already optimized) and keep the normal packets less expensive
on a 10Gb/s network card.

[...]
> This is wrong, NET_IP_ALIGN is for DMA buffers only. It is defined
> as 0 for those platforms where DMA alignment is important. In this
> case we are copying, so we want to force 2.

Ok, ok.

-- 
Ueimor
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