Hi Tetsuya, Any news about this comment in ethdev?
* TODO: * rte_eal_vdev_init() should return port_id, * And rte_eth_dev_save() and rte_eth_dev_get_changed_port() * should be removed. */ http://dpdk.org/browse/dpdk/tree/lib/librte_ether/rte_ethdev.c#n618