Re: forcedeth - WOL [SOLVED]

On 2006.09.28 02:04:48 +0200, Björn Steinbrink wrote:

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@xxxxxxxxxx> 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...

... 5 reboots later ...

It still breaks with 2.6.18.

Not touching WOL from Linux at all, rebooting and turning the box off
during POST, WOL works using the real MAC address.

Booting 2.16.17.x or 2.6.18, turning on WOL and finally shutting down
the box, I need to send the WOL packet with the MAC address reversed.

Björn
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