[Codel] fq_codel_drop vs a udp flood

[Eric Dumazet]

On Sun, 2016-05-01 at 11:26 -0700, Dave Taht wrote:
> On Sun, May 1, 2016 at 10:59 AM, Eric Dumazet <eric.dumazet at gmail.com> wrote:
> >
> > Well, just _kill_ the offender, instead of trying to be gentle.
> 
> I like it. :) Killing off a malfunctioning program flooding the local
> network interface (intentionally or unintentionally) seems like a
> useful idea.
> 
..

> Killing the bad program, and dropping all of the fattest flow strike
> me as two patches.[1]

What I meant by 'killing' was to drop more than one packet from this fat
flow, not actually killing a task.

I will submit an official patch, dropping 50% of the fat flow backlog,
and a configurable cap of 64 packets to somewhat control max ->enqueue()
latency.