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Date: Thu, 19 Jul 2007 12:11:10 +0200
From: Patrick McHardy <kaber@...sh.net>
To: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@...el.com>
CC: Arkadiusz Miskiewicz <arekm@...en.pl>, netdev@...r.kernel.org
Subject: Re: ~3 hours old git tree: Virtual device lo asks to queue packet!
Patrick McHardy wrote:
> Arkadiusz Miskiewicz wrote:
>
>>>>CONFIG_NETDEVICES_MULTIQUEUE=y
>>>
>>>Does it go away if you disable this option?
>>
>>
>>Yes, it goes away after disabling this.
>
>
> I don't see a bug in the code itself, maybe the queue_mapping points
> to an invalid subqueue. Could you please try this patch and post the
> output?
OK I see what the problem is. The loopback device is statically
allocated, so it doesn't have any room for the subqueues reserved.
The easiest fix would be to use egress_subqueue[1] in struct
net_device, but I think that may cause warnings with newer gccs
when using a constant index that is > 0. OTOH using constant
indices doesn't seem to make much sense for the subqueue array.
Arkadiusz, does this patch fix the problem?
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