netdev - Re: cannot set IP for ethernet

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Message-Id: <200706131039.32011.oliver@neukum.org>
Date:	Wed, 13 Jun 2007 10:39:31 +0200
From:	Oliver Neukum <oliver@...kum.org>
To:	Patrick McHardy <kaber@...sh.net>
Cc:	linux-kernel@...r.kernel.org,
	Linux Netdev List <netdev@...r.kernel.org>,
	Herbert Xu <herbert@...dor.apana.org.au>
Subject: Re: cannot set IP for ethernet

Am Dienstag, 12. Juni 2007 schrieb Patrick McHardy:
> Oliver Neukum wrote:
> > with 2.6.22-rc4-git2 I am getting errors when setting IP for ethernet
> > interfaces:
> > 
> > ioctl(4, SIOCSIFADDR, 0x7fff94931600)   = -1 ENOBUFS (No buffer space available)
> > 
> > The error is independant of the interface. It happens to all interfaces.
> > There's nothing in the syslog.
> > 
> > valisk:/home/oliver # uname -a
> > Linux valisk 2.6.22-rc4-git2-default #3 SMP Tue Jun 12 13:27:54 CEST 2007 x86_64 x86_64 x86_64 GNU/Linux
> 
> 
> This can happen if the initial inetdev allocation when the netdevice is
> registered fails. I think it would make sense to try to allocate again
> when adding addresses in that case, otherwise there is no way of
> recovery other than unregistering and registering the device again.

With your patch the problem has gone away. Is there a way to especially
stress the system in that regard?

	Regards
		Oliver
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