From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: [PATCH RFC 0/2] tun: lockless xmit
Date: Wed, 13 Apr 2016 06:43:41 -0700
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Cc: Paolo Abeni <pabeni@redhat.com>, netdev@vger.kernel.org,
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To: "Michael S. Tsirkin" <mst@redhat.com>
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On Wed, 2016-04-13 at 16:17 +0300, Michael S. Tsirkin wrote:
> On Wed, Apr 13, 2016 at 06:09:26AM -0700, Eric Dumazet wrote:
> > You really need to convince John Fastabend to work full time on the real
> > thing
> 
> Meaning making all qdiscs themselves lockless? With complex policies
> like codel I can see how that might be challenging ...

Codel is a fifo, plus some droping capabilities at dequeue time.

It totally can be made lockless.