linux-kernel - Re: [EXT] Re: [PATCH] net: atlantic: fix check for invalid ethernet addresses

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Message-ID: <7ed83813-0df4-b6ac-f1d2-a28d8011b1aa@marvell.com>
Date:   Thu, 1 Dec 2022 09:07:49 +0100
From:   Igor Russkikh <irusskikh@...vell.com>
To:     Andrew Lunn <andrew@...n.ch>, Brian Masney <bmasney@...hat.com>
CC:     <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
        <pabeni@...hat.com>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <cth451@...il.com>
Subject: Re: [EXT] Re: [PATCH] net: atlantic: fix check for invalid ethernet
 addresses


>> That won't work for this board since that function only checks that the
>> MAC "is not 00:00:00:00:00:00, is not a multicast address, and is not
>> FF:FF:FF:FF:FF:FF." The MAC address that we get on all of our boards is
>> 00:17:b6:00:00:00.
> 
> Which is a valid MAC address. So i don't see why the kernel should
> reject it and use a random one.
> 
> Maybe you should talk to Marvell about how you can program the
> e-fuses. You can then use MAC addresses from A8-97-DC etc.

Hi Brian,

I do completely agree with Andrew. Thats not a fix to be made in linux kernel.

The boards you get have zero efuse. You should work with Qualcomm on how to update mac addresses of your boards.

Igor