netdev - Re: UDP is bypassing qdisc statistics ....

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Message-Id: <20090901062840.f1c25757.lk-netdev@lk-netdev.nosense.org>
Date:	Tue, 1 Sep 2009 06:28:40 +0930
From:	Mark Smith <lk-netdev@...netdev.nosense.org>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Christoph Lameter <cl@...ux-foundation.org>,
	netdev@...r.kernel.org, davem@...ux-foundation.org
Subject: Re: UDP is bypassing qdisc statistics ....

On Mon, 31 Aug 2009 21:54:49 +0200
Eric Dumazet <eric.dumazet@...il.com> wrote:

> Christoph Lameter a écrit :
> > This is with 2.6.31-rc7. If I send icmp then its correctly registered as a
> > packet by the qdisc layer:
> > 
<snip>
> 
> loopback device do bypass qdisc layer for example...

On occassion, I'd have found it useful if it didn't. It'd be convenient
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.
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