netdev - Re: [NET] Add proc file to display the state of all qdiscs.

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Message-ID: <4A9FD2DC.7070807@trash.net>
Date:	Thu, 03 Sep 2009 16:29:48 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	Jesper Dangaard Brouer <hawk@...u.dk>
CC:	Christoph Lameter <cl@...ux-foundation.org>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Jarek Poplawski <jarkao2@...il.com>,
	David Miller <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [NET] Add proc file to display the state of all qdiscs.

Jesper Dangaard Brouer wrote:
> 
> On Wed, 2 Sep 2009, Christoph Lameter wrote:
>> On Wed, 2 Sep 2009, Eric Dumazet wrote:
>>
>>> Same name "eth0" is displayed, that might confuse parsers...
>>>
>>> What naming convention should we choose for multiqueue devices ?
>>
>> eth0/tx<number> ?
> 
> Remember that we already have a naming convention in /proc/interrupts
> 
>  eth0-tx-<number>
> 
> Lets not introduce too many new once ;-)

The approach I'm currently working on will present multiqueue root
qdiscs as children of a dummy classful qdisc. This avoids handle
clashes and the need for new identifiers and allows to address each
qdisc seperately, similar to how it works with other classful qdiscs:

qdisc mq 1: root refcnt 2
 Sent 126 bytes 3 pkt (dropped 0, overlimits 0 requeues 0)
 rate 0bit 0pps backlog 0b 0p requeues 0

class mq 1:1 root leaf 8001:
 Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 0b 0p requeues 0
class mq 1:2 root leaf 8002:
 Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 0b 0p requeues 0
class mq 1:3 root leaf 8003:
 Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 0b 0p requeues 0
class mq 1:4 root leaf 8004:
 Sent 126 bytes 3 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 0b 0p requeues 0

Its a bit tricky though so I'm likely going to need a few more hours.
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