From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jarek Poplawski <jarkao2@gmail.com>
Subject: Re: UDP is bypassing qdisc statistics ....
Date: Tue, 1 Sep 2009 06:37:26 +0000
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Cc: Eric Dumazet <eric.dumazet@gmail.com>,
	Christoph Lameter <cl@linux-foundation.org>,
	netdev@vger.kernel.org, davem@linux-foundation.org
To: Mark Smith <lk-netdev@lk-netdev.nosense.org>
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On 31-08-2009 22:58, Mark Smith wrote:
> On Mon, 31 Aug 2009 21:54:49 +0200
> Eric Dumazet <eric.dumazet@gmail.com> wrote:
>=20
>> Christoph Lameter a =E9crit :
>>> This is with 2.6.31-rc7. If I send icmp then its correctly register=
ed as a
>>> packet by the qdisc layer:
>>>
> <snip>
>> loopback device do bypass qdisc layer for example...
>=20
> On occassion, I'd have found it useful if it didn't. It'd be convenie=
nt
> to test out your qdisc config, or test out applications performance
> behaviour over a simulated WAN via netem, without having to a
> network and two hosts, and all the related miscellaneous setup work.

Probably Eric and you mean something special, but generally a loopback
and some other virtuals bypass qdisc layer only with default qdisc.

Jarek P.