+/* Iterates over all of 'netdev''s queues, calling 'cb' with the queue's ID,
+ * its statistics, and the 'aux' specified by the caller. The order of
+ * iteration is unspecified, but (when successful) each queue is visited
+ * exactly once.
+ *
+ * Calling this function may be more efficient than calling
+ * netdev_get_queue_stats() for every queue.
+ *
+ * 'cb' must not modify or free the statistics passed in.
+ *
+ * Returns 0 if successful, otherwise a positive errno value. On error, some
+ * configured queues may not have been included in the iteration. */
+int
+netdev_dump_queue_stats(const struct netdev *netdev,
+ netdev_dump_queue_stats_cb *cb, void *aux)
+{
+ const struct netdev_class *class = netdev_get_dev(netdev)->netdev_class;
+ return (class->dump_queue_stats
+ ? class->dump_queue_stats(netdev, cb, aux)
+ : EOPNOTSUPP);
+}
+
+/* If 'netdev' is a VLAN network device (e.g. one created with vconfig(8)),
+ * sets '*vlan_vid' to the VLAN VID associated with that device and returns 0.
+ * Otherwise returns a errno value (specifically ENOENT if 'netdev_name' is the
+ * name of a network device that is not a VLAN device) and sets '*vlan_vid' to
+ * -1. */
+int
+netdev_get_vlan_vid(const struct netdev *netdev, int *vlan_vid)
+{
+ int error = (netdev_get_dev(netdev)->netdev_class->get_vlan_vid
+ ? netdev_get_dev(netdev)->netdev_class->get_vlan_vid(netdev,
+ vlan_vid)
+ : ENOENT);
+ if (error) {
+ *vlan_vid = 0;