* @ports: Map from port number to &struct vport. %ODPP_LOCAL port
* always exists, other ports may be %NULL.
* @port_list: List of all ports in @ports in arbitrary order.
* @ports: Map from port number to &struct vport. %ODPP_LOCAL port
* always exists, other ports may be %NULL.
* @port_list: List of all ports in @ports in arbitrary order.