net: remove search_list from netdev_adjacent
We already don't need it cause we see every upper/lower device in the list already. CC: "David S. Miller" <davem@davemloft.net> CC: Eric Dumazet <edumazet@google.com> CC: Jiri Pirko <jiri@resnulli.us> CC: Alexander Duyck <alexander.h.duyck@intel.com> CC: Cong Wang <amwang@redhat.com> Signed-off-by: Veaceslav Falico <vfalico@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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5d261913ca
Коммит
620f3186ca
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@ -4381,42 +4381,8 @@ struct netdev_adjacent {
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struct list_head list;
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struct rcu_head rcu;
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struct list_head search_list;
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};
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static void __append_search_uppers(struct list_head *search_list,
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struct net_device *dev)
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{
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struct netdev_adjacent *upper;
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list_for_each_entry(upper, &dev->upper_dev_list, list) {
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/* check if this upper is not already in search list */
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if (list_empty(&upper->search_list))
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list_add_tail(&upper->search_list, search_list);
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}
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}
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static bool __netdev_search_upper_dev(struct net_device *dev,
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struct net_device *upper_dev)
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{
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LIST_HEAD(search_list);
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struct netdev_adjacent *upper;
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struct netdev_adjacent *tmp;
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bool ret = false;
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__append_search_uppers(&search_list, dev);
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list_for_each_entry(upper, &search_list, search_list) {
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if (upper->dev == upper_dev) {
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ret = true;
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break;
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}
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__append_search_uppers(&search_list, upper->dev);
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}
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list_for_each_entry_safe(upper, tmp, &search_list, search_list)
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INIT_LIST_HEAD(&upper->search_list);
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return ret;
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}
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static struct netdev_adjacent *__netdev_find_adj(struct net_device *dev,
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struct net_device *adj_dev,
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bool upper)
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@ -4544,7 +4510,6 @@ static int __netdev_adjacent_dev_insert(struct net_device *dev,
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adj->master = master;
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adj->neighbour = neighbour;
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adj->ref_nr = 1;
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INIT_LIST_HEAD(&adj->search_list);
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dev_hold(adj_dev);
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pr_debug("dev_hold for %s, because of %s link added from %s to %s\n",
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@ -4671,7 +4636,7 @@ static int __netdev_upper_dev_link(struct net_device *dev,
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return -EBUSY;
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/* To prevent loops, check if dev is not upper device to upper_dev. */
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if (__netdev_search_upper_dev(upper_dev, dev))
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if (__netdev_find_upper(upper_dev, dev))
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return -EBUSY;
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if (__netdev_find_upper(dev, upper_dev))
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