Re: [PATCH] net: atlantic: fix check for invalid ethernet addresses

Brian Masney
2022-11-30T18:48:21Z

On Wed, Nov 30, 2022 at 01:26:40PM -0500, Tianhao Chai wrote:
> I'm not familar with this particular board, but this probably shouldn't
> be done in kernel. AFAIK uboot allows overriding MAC with env 'ethaddr'.
> uboot then either writes this MAC into DT or calls NIC specific code to
> set the MAC into NIC memory before booting the kernel.

Our Boot Loader is ABL on the Qualcomm platform.

> The other way around I can think of is to use systemd-networkd or some
> other network management daemon to override the mac address as it tries
> to establish a network connection. This might be less hassle if you
> don't want to mess with the boot loader, but for embedded devices you'd
> need a different root fs image for every board.

We'll look into the systemd approach. I see that our board serial number
is available in /sys/devices/soc0/serial_number and we can have a script
generate a MAC address based on that.

> Acked-by: Tianhao Chai <cth451@gmail.com>

Thanks!

Brian