* @exit: Called at module unload.
* @create: Create a new vport configured as specified. On success returns
* a new vport allocated with vport_alloc(), otherwise an ERR_PTR() value.
* @exit: Called at module unload.
* @create: Create a new vport configured as specified. On success returns
* a new vport allocated with vport_alloc(), otherwise an ERR_PTR() value.