Re: [PATCH] net: usb: usbnet: restore usb%d name exception for local mac addresses

From: Andrew Lunn
Date: Tue Dec 03 2024 - 15:48:15 EST


On Tue, Dec 03, 2024 at 10:04:55PM +0900, Dominique Martinet wrote:
> From: Dominique Martinet <dominique.martinet@xxxxxxxxxxxxxxxxx>
>
> The previous commit assumed that local addresses always came from the
> kernel, but some devices hand out local mac addresses so we ended up
> with point-to-point devices with a mac set by the driver, renaming to
> eth%d when they used to be named usb%d.
>
> Userspace should not rely on device name, but for the sake of stability
> restore the local mac address check portion of the naming exception:
> point to point devices which either have no mac set by the driver or
> have a local mac handed out by the driver will keep the usb%d name.

Are you saying the OTP or NVMEM has a locally administered MAC address
stored in it? Is there a mechanism to change it? The point about
locally administered MAC addresses is that they are locally
administered.

Andrew