linux-kernel - RE: forcedeth

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Message-ID: <DBFABB80F7FD3143A911F9E6CFD477B0189CAAA9@hqemmail02.nvidia.com>
Date:	Thu, 28 Sep 2006 10:09:24 -0700
From:	"Ayaz Abdulla" <AAbdulla@...dia.com>
To:	"Andrew Morton" <akpm@...l.org>,
	Björn Steinbrink <B.Steinbrink@....de>
Cc:	"Martin Filip" <bugtraq@...ula.net>,
	<linux-kernel@...r.kernel.org>, <stable@...nel.org>
Subject: RE: forcedeth - WOL [SOLVED]



-----Original Message-----
From: Andrew Morton [mailto:akpm@...l.org] 
Sent: Wednesday, September 27, 2006 8:39 PM
To: Björn Steinbrink
Cc: Martin Filip; linux-kernel@...r.kernel.org; Ayaz Abdulla; stable@...nel.org
Subject: Re: forcedeth - WOL [SOLVED]


On Thu, 28 Sep 2006 04:24:47 +0200
Björn Steinbrink <B.Steinbrink@....de> wrote:

> On 2006.09.28 04:04:38 +0200, Björn Steinbrink wrote:
> > On 2006.09.27 18:36:25 -0700, Andrew Morton wrote:
> > > On Thu, 28 Sep 2006 03:01:33 +0200
> > > Björn Steinbrink <B.Steinbrink@....de> wrote:
> > > 
> > > > > > > Do we know if this reversal *always* happens with this 
> > > > > > > driver, or only sometimes?
> > > > 
> > > > I only tried 2.6.18 twice this time, but when I wrote my own 
> > > > tool to do it, I had probably 20-30 power on -> ethtool -> 
> > > > poweroff cycles before I decided to look into Bugzilla. As it 
> > > > looked like being fixed already and I did use the nForce NIC for 
> > > > testing only, I didn't spend any further time on it back then.
> > > 
> > > What I'm angling towards is: "is this just a driver bug"?
> > 
> > I just took a peek at the code.
> > 
> > The version on bugzilla (last attachment, comment #22), which was 
> > reported to work correctly, has the MAC address reversal hardcoded. 
> > The driver in 2.6.18 has some logic to detect if it should reverse 
> > the MAC address. So it looks like a hardware oddity/bug that the 
> > driver wants to fix but fails. I'll see what happens if I force 
> > address reversal and if I can decipher anything, but probably 
> > someone else will have to cast the runes...
> 
> OK, please excuse me wasting your time, it's late over here... I've 
> actually been looking at Linus' git tree (pulled yesterday) while 
> writing that mail, not 2.6.18. 2.6.18 does _not_ contain the address 
> reversal detection. Using the git tree instead of 2.6.18 WOL works as 
> expected, without having to reverse the MAC address.
> 

hm, OK, thanks.  Ayaz, do you think 5070d3408405ae1941f259acac7a9882045c3be4 is a suitable thing for 2.6.18.x?

There are a few forcedeth patches (mac addr, NAPI, cleanup, etc) in that commit list and the mac address changes could be put into 2.6.18.x
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