netdev - Re: [PATCH 2.6.25 2/4]S2io: Multiqueue network device support

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Message-ID: <47BCB60C.3040409@trash.net>
Date:	Thu, 21 Feb 2008 00:21:48 +0100
From:	Patrick McHardy <kaber@...sh.net>
To:	David Miller <davem@...emloft.net>
CC:	Ramkrishna.Vepa@...erion.com, Sreenivasa.Honnur@...erion.com,
	netdev@...r.kernel.org, jeff@...zik.org, support@...erion.com
Subject: Re: [PATCH 2.6.25 2/4]S2io: Multiqueue network device support - FIFO
 selection based on L4 ports

David Miller wrote:
> From: Patrick McHardy <kaber@...sh.net>
> Date: Thu, 21 Feb 2008 00:15:13 +0100
>
>   
>> I missed those discussions, but this has already been agreed on,
>> fine by me. It would still be preferable to use queue_mapping
>> instead of priority IMO, even if its activated by a module
>> parameter, since that leaves the option to use classifiers.
>>     
>
> I think the driver should compute the value in it's transmit
> routine and keep the value local.  It shouldn't be setting
> skb->foo values at all, they don't belong to the driver
> and this could confuse other code.
>   

Yes, I didn't meant it should set anything, but on of the options
this patch introduces is to _use_ skb->priority for classification,
so the classification is already external, in which case it might
as well offer the full flexibility (as one option) to use qdisc
classifiers.



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