linux-kernel - Re: [PATCH 1/3 v3] net: usb: r8152: Check used MAC passthrough address

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Message-ID: <YdXVoNFB/Asq6bc/@lunn.ch>
Date:   Wed, 5 Jan 2022 18:30:08 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Aaron Ma <aaron.ma@...onical.com>
Cc:     kuba@...nel.org, henning.schild@...mens.com,
        linux-usb@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, davem@...emloft.net,
        hayeswang@...ltek.com, tiwai@...e.de
Subject: Re: [PATCH 1/3 v3] net: usb: r8152: Check used MAC passthrough
 address

On Wed, Jan 05, 2022 at 11:14:25PM +0800, Aaron Ma wrote:
> When plugin multiple r8152 ethernet dongles to Lenovo Docks
> or USB hub, MAC passthrough address from BIOS should be
> checked if it had been used to avoid using on other dongles.
> 
> Currently builtin r8152 on Dock still can't be identified.
> First detected r8152 will use the MAC passthrough address.

I do have to wonder why you are doing this in the kernel, and not
using a udev rule? This seems to be policy, and policy does not belong
in the kernel.

   Andrew