On 27.10.2021 03:05:53, Vincent Mailhol wrote:
> The field dev_port of struct net_device indicates the port number of a
> network device [1]. This patch populates this field.
> 
> This field can be helpful to distinguish between the two network
> interfaces of a dual channel device (i.e. ES581.4 or ES582.1). Indeed,
> at the moment, all the network interfaces of a same device share the
> same static udev attributes c.f. output of:
> 
> | udevadm info --attribute-walk /sys/class/net/canX
> 
> The dev_port attribute can then be used to write some udev rules to,
> for example, assign a permanent name to each network interface based
> on the serial/dev_port pair (which is convenient when you have a test
> bench with several CAN devices connected simultaneously and wish to
> keep consistent interface names upon reboot).
> 
> [1] https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-class-net
> 
> Suggested-by: Lukas Magel <lukas.magel@escrypt.com>
> Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>

Applied to linux-can-next/testing.

Thanks,
Marc

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