Re: [PATCH v3 2/3] net: dsa: use NET_NAME_PREDICTABLE for user ports with name given in DT

[Andrew Lunn]

On Wed, Nov 16, 2022 at 11:52:03AM +0100, Rasmus Villemoes wrote:
> When a user port has a label in device tree, the corresponding
> netdevice is, to quote include/uapi/linux/netdevice.h, "predictably
> named by the kernel". This is also explicitly one of the intended use
> cases for NET_NAME_PREDICTABLE, quoting 685343fc3ba6 ("net: add
> name_assign_type netdev attribute"):
> 
>   NET_NAME_PREDICTABLE:
>     The ifname has been assigned by the kernel in a predictable way
>     [...] Examples include [...] and names deduced from hardware
>     properties (including being given explicitly by the firmware).
> 
> Expose that information properly for the benefit of userspace tools
> that make decisions based on the name_assign_type attribute,
> e.g. a systemd-udev rule with "kernel" in NamePolicy.
> 
> Signed-off-by: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>

Reviewed-by: Andrew Lunn <andrew@xxxxxxx>

    Andrew