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From: Eric Dumazet <eric.dumazet@gmail.com>
To: Dave Taht <dave.taht@gmail.com>
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Date: Mon, 25 Jun 2012 17:45:51 +0200
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Cc: codel@lists.bufferbloat.net,
	Dave =?ISO-8859-1?Q?T=E4ht?= <dave.taht@bufferbloat.net>
Subject: Re: [Codel] [RFCv2 PATCH] codel: add ecn_target for when to drop
 rather than mark ecn packets
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On Mon, 2012-06-25 at 08:30 -0700, Dave Taht wrote:

> It was the way I was leaning until I observed me dropping ecn enabled
> mosh, ssh, and babel packets , which tend to be small, so I started
> thinking in terms of dropping ecn packets on a graduated packet size
> scale after exceeding target. ESPECIALLY in case of overload you want
> command and control packets to get through.
> 

Don't try to add in CoDel things that should be done at another layer.
There is no classification in CoDel : Its a FIFO.

Only way is to prioritize control packets if you need to, and use
several queues.

I dont understand... Are you saying that you feel the need to drop
packets instead of marking them in a 'good citizen world' (none of your
flow pretends to use ECN to avoid drops) ?