netdev - Re: ~3 hours old git tree: Virtual device lo asks to queue packet!

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Message-Id: <200707191352.52707.arekm@maven.pl>
Date:	Thu, 19 Jul 2007 13:52:52 +0200
From:	Arkadiusz Miskiewicz <arekm@...en.pl>
To:	Patrick McHardy <kaber@...sh.net>
Cc:	Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@...el.com>,
	netdev@...r.kernel.org
Subject: Re: ~3 hours old git tree: Virtual device lo asks to queue packet!

On Thursday 19 of July 2007, Patrick McHardy wrote:
> 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?

It fixes the problem for me.

-- 
Arkadiusz Miśkiewicz        PLD/Linux Team
arekm / maven.pl            http://ftp.pld-linux.org/
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