diff options
Diffstat (limited to 'net/core/dev.c')
| -rw-r--r-- | net/core/dev.c | 37 |
1 files changed, 1 insertions, 36 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 2aa914eee05..749925a040a 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -4381,42 +4381,8 @@ struct netdev_adjacent { struct list_head list; struct rcu_head rcu; - struct list_head search_list; }; -static void __append_search_uppers(struct list_head *search_list, - struct net_device *dev) -{ - struct netdev_adjacent *upper; - - list_for_each_entry(upper, &dev->upper_dev_list, list) { - /* check if this upper is not already in search list */ - if (list_empty(&upper->search_list)) - list_add_tail(&upper->search_list, search_list); - } -} - -static bool __netdev_search_upper_dev(struct net_device *dev, - struct net_device *upper_dev) -{ - LIST_HEAD(search_list); - struct netdev_adjacent *upper; - struct netdev_adjacent *tmp; - bool ret = false; - - __append_search_uppers(&search_list, dev); - list_for_each_entry(upper, &search_list, search_list) { - if (upper->dev == upper_dev) { - ret = true; - break; - } - __append_search_uppers(&search_list, upper->dev); - } - list_for_each_entry_safe(upper, tmp, &search_list, search_list) - INIT_LIST_HEAD(&upper->search_list); - return ret; -} - static struct netdev_adjacent *__netdev_find_adj(struct net_device *dev, struct net_device *adj_dev, bool upper) @@ -4544,7 +4510,6 @@ static int __netdev_adjacent_dev_insert(struct net_device *dev, adj->master = master; adj->neighbour = neighbour; adj->ref_nr = 1; - INIT_LIST_HEAD(&adj->search_list); dev_hold(adj_dev); pr_debug("dev_hold for %s, because of %s link added from %s to %s\n", @@ -4671,7 +4636,7 @@ static int __netdev_upper_dev_link(struct net_device *dev, return -EBUSY; /* To prevent loops, check if dev is not upper device to upper_dev. */ - if (__netdev_search_upper_dev(upper_dev, dev)) + if (__netdev_find_upper(upper_dev, dev)) return -EBUSY; if (__netdev_find_upper(dev, upper_dev)) |