int netdev_rxq_drain(struct netdev_rxq *);
/* Packet transmission. */
-int netdev_send(struct netdev *, struct dpif_packet *, bool may_steal);
+int netdev_send(struct netdev *, struct dpif_packet **, int cnt,
+ bool may_steal);
void netdev_send_wait(struct netdev *);
/* Hardware address. */