netdev - Re: [patch net-next v3] tc: introduce OpenFlow classifier

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Date:	Fri, 10 Apr 2015 08:23:59 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	jiri@...nulli.us
Cc:	netdev@...r.kernel.org, jhs@...atatu.com, tgraf@...g.ch,
	jesse@...ira.com
Subject: Re: [patch net-next v3] tc: introduce OpenFlow classifier

From: Jiri Pirko <jiri@...nulli.us>
Date: Fri, 10 Apr 2015 11:12:03 +0200

> Thu, Apr 09, 2015 at 11:34:23PM CEST, davem@...emloft.net wrote:
>>However I am sure that I majorly object to having yet another flow
>>parsing engine.  Therefore, at least adjust this code to use our flow
>>dissector and datastructures.  Adjust the flow dissector to fit your
>>needs, if necessary.
> 
> Yep, Thomas already suggested the merge. The thing is, cls_flow uses
> linked list for doing lookups. That is not scalable. in cls_openflow I
> use rhashtable. Using rhashtable in cls_flow would break the existing
> assumption that first inrested filter would be first hit.

I'm talking about using net/core/flow_dissect.c's interfaces instead
of your by-hand header parsing.  This has nothing to do with cls_flow
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