linux-kernel - Re: forcedeth

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Date:	Thu, 28 Sep 2006 02:04:48 +0200
From:	Björn Steinbrink <B.Steinbrink@....de>
To:	Andrew Morton <akpm@...l.org>
Cc:	Martin Filip <bugtraq@...ula.net>, linux-kernel@...r.kernel.org,
	Ayaz Abdulla <aabdulla@...dia.com>
Subject: Re: forcedeth - WOL [SOLVED]


Hi Andrew,


On 2006.09.27 16:57:04 -0700, Andrew Morton wrote:
> On Wed, 27 Sep 2006 22:38:06 +0200
> Martin Filip <bugtraq@...ula.net> wrote:
> 
> > Hi,
> > 
> > Bj__rn Steinbrink p____e v St 27. 09. 2006 v 20:38 +0200:
> > 
> > > Did you check that WOL was enabled? I need to re-activate it after each
> > > boot (I guess that's normal, not sure though).
> > > The output of "ethtool eth0" should show:
> > > 
> > >         Supports Wake-on: g
> > >         Wake-on: g
> > > 
> > Yes, of course :)
> > 
> > > Also, I remember a bugzilla entry in which it was said that the MAC was
> > > somehow reversed by the driver. I that is still the case (I can't find
> > > the bugzilla entry right now), you might just reverse the MAC address in
> > > your WOL packet to workaround the bug.
> > 
> > Hey! this is really crazy :) but it works! To bo honest - I really do
> > not know what crazy bug could cause problems like this. I thought it's
> > NIC thing to manage all the work about WOL. I thought OS only sets NIC
> > into "WOL mode".
> > 
> > But seeing this - one packet for windows and one magic packet for linux
> > driver - I really do not get it.
> > 
> 
> Are you saying that byte-reversing the MAC address make WOL work correctly?
> 
> What tool do you use to send the packet, and how is it being invoked?
> 
> Do we know if this reversal *always* happens with this driver, or only
> sometimes?
> 
> Thanks.

searching bugzilla was more succesful this time (somehow bugzillas hate
me, so I need a bunch of tries every time), the bug I meant was #6604.

The bugreport says that it should work with 0.57 though (which is in
2.6.18 AFAICT), I'll go and see if it works for me...

Björn
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