net/core/dev.c

7990 static int ____netdev_has_upper_dev(struct net_device *upper_dev,
7995 	return upper_dev == dev;
8001  * @upper_dev: upper device to check
8008 			  struct net_device *upper_dev)
8011 		.data = (void *)upper_dev,
8024  * @upper_dev: upper device to check
8032 				  struct net_device *upper_dev)
8035 		.data = (void *)upper_dev,
8279 				   struct net_device *upper_dev)
8283 		.data = (void *)upper_dev,
8811 					    struct net_device *upper_dev,
8818 	ret = __netdev_adjacent_dev_insert(dev, upper_dev, up_list,
8823 	ret = __netdev_adjacent_dev_insert(upper_dev, dev, down_list,
8826 		__netdev_adjacent_dev_remove(dev, upper_dev, 1, up_list);
8834 					       struct net_device *upper_dev,
8839 	__netdev_adjacent_dev_remove(dev, upper_dev, ref_nr, up_list);
8840 	__netdev_adjacent_dev_remove(upper_dev, dev, ref_nr, down_list);
8844 						struct net_device *upper_dev,
8847 	return __netdev_adjacent_dev_link_lists(dev, upper_dev,
8849 						&upper_dev->adj_list.lower,
8854 						   struct net_device *upper_dev)
8856 	__netdev_adjacent_dev_unlink_lists(dev, upper_dev, 1,
8858 					   &upper_dev->adj_list.lower);
8862 				   struct net_device *upper_dev, bool master,
8872 		.upper_dev = upper_dev,
8882 	if (dev == upper_dev)
8885 	/* To prevent loops, check if dev is not upper device to upper_dev. */
8886 	if (__netdev_has_upper_dev(upper_dev, dev))
8889 	if ((dev->lower_level + upper_dev->upper_level) > MAX_NEST_DEV)
8893 		if (__netdev_has_upper_dev(dev, upper_dev))
8898 			return master_dev == upper_dev ? -EEXIST : -EBUSY;
8907 	ret = __netdev_adjacent_dev_link_neighbour(dev, upper_dev, upper_priv,
8921 	__netdev_update_lower_level(upper_dev, priv);
8922 	__netdev_walk_all_upper_dev(upper_dev, __netdev_update_lower_level,
8928 	__netdev_adjacent_dev_unlink_neighbour(dev, upper_dev);
8936  * @upper_dev: new upper device
8945 			  struct net_device *upper_dev,
8953 	return __netdev_upper_dev_link(dev, upper_dev, false,
8961  * @upper_dev: new upper device
8973 				 struct net_device *upper_dev,
8982 	return __netdev_upper_dev_link(dev, upper_dev, true,
8988 				      struct net_device *upper_dev,
8995 		.upper_dev = upper_dev,
9001 	changeupper_info.master = netdev_master_upper_dev_get(dev) == upper_dev;
9006 	__netdev_adjacent_dev_unlink_neighbour(dev, upper_dev);
9014 	__netdev_update_lower_level(upper_dev, priv);
9015 	__netdev_walk_all_upper_dev(upper_dev, __netdev_update_lower_level,
9022  * @upper_dev: new upper device
9028 			     struct net_device *upper_dev)
9035 	__netdev_upper_dev_unlink(dev, upper_dev, &priv);
9039 static void __netdev_adjacent_dev_set(struct net_device *upper_dev,
9045 	adj = __netdev_find_adj(lower_dev, &upper_dev->adj_list.lower);
9049 	adj = __netdev_find_adj(upper_dev, &lower_dev->adj_list.upper);
9054 static void netdev_adjacent_dev_disable(struct net_device *upper_dev,
9057 	__netdev_adjacent_dev_set(upper_dev, lower_dev, true);
9060 static void netdev_adjacent_dev_enable(struct net_device *upper_dev,
9063 	__netdev_adjacent_dev_set(upper_dev, lower_dev, false);