get_physical_port_id

Gets the physical port ID of the Device.

If non-%NULL, this is an opaque string that can be used to recognize when seemingly-unrelated Devices are actually just different virtual ports on a single physical port. (Eg, NPAR / SR-IOV.)

Parameters:

this

a Device

Returns:

the physical port ID of the device, or null if the port ID is unknown. This is the internal string used by the device and must not be modified.