netdev - Re: [RFC NET_SCHED 00/02]: Flexible SFQ flow classification

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Date:	Wed, 30 May 2007 12:18:18 +0100
From:	Andy Furniss <lists@...yfurniss.entadsl.com>
To:	Patrick McHardy <kaber@...sh.net>
Cc:	netdev@...r.kernel.org, hadi@...erus.ca
Subject: Re: [RFC NET_SCHED 00/02]: Flexible SFQ flow classification

Patrick McHardy wrote:
> One good thing about ESFQ is the more flexible flow classification, but
> I don't like the concept of having a set of selectable hash functions
> very much.
> 
> These patches change SFQ to allow attaching external classifiers and add
> a new "flow" classifier that allows to classify flows based on an arbitary
> combination of pre-defined keys. Its probably not the fastest classifier
> when used with multiple keys, but frankly, I don't think speed is very
> important in most situations where the current SFQ implementation is used.
> 
> It currently does not support perturbation, I didn't want to move this into
> the classifier, so I need to think about a way to handle it within SFQ.
>

Cool, but isn't this going to show the same collision problems that the
pre jhash esfq saw?

Andy.
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