[Codel] [RFCv2 PATCH] codel: add ecn_target for when to drop rather than mark ecn packets

Eric Dumazet eric.dumazet at gmail.com
Mon Jun 25 11:45:51 EDT 2012

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) ?

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