Re: [PATCH v3 2/5] net: Expose available time stamping layers to user space.

[Vladimir Oltean]

Hi Köry,

On Wed, Mar 08, 2023 at 02:59:26PM +0100, Köry Maincent wrote:
> From: Kory Maincent <kory.maincent@xxxxxxxxxxx>
> 
> Time stamping on network packets may happen either in the MAC or in
> the PHY, but not both.  In preparation for making the choice
> selectable, expose both the current and available layers via ethtool.
> 
> In accordance with the kernel implementation as it stands, the current
> layer will always read as "phy" when a PHY time stamping device is
> present.  Future patches will allow changing the current layer
> administratively.
> 
> Signed-off-by: Richard Cochran <richardcochran@xxxxxxxxx>
> Signed-off-by: Kory Maincent <kory.maincent@xxxxxxxxxxx>
> ---

I'm pretty sure that all new ethtool commands must be implemented
through the genetlink socket interface. The ioctl interface stopped
being extended and is in maintenance mode only.