};
void dpif_port_clone(struct dpif_port *, const struct dpif_port *);
void dpif_port_destroy(struct dpif_port *);
+bool dpif_port_exists(const struct dpif *dpif, const char *devname);
int dpif_port_query_by_number(const struct dpif *, uint32_t port_no,
struct dpif_port *);
int dpif_port_query_by_name(const struct dpif *, const char *devname,