diff options
| -rw-r--r-- | net/core/dev.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index c6bbf310d407..f55fb4536016 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -5561,6 +5561,9 @@ static int __netdev_adjacent_dev_insert(struct net_device *dev, if (adj) { adj->ref_nr += 1; + pr_debug("Insert adjacency: dev %s adj_dev %s adj->ref_nr %d\n", + dev->name, adj_dev->name, adj->ref_nr); + return 0; } @@ -5574,8 +5577,8 @@ static int __netdev_adjacent_dev_insert(struct net_device *dev, adj->private = private; dev_hold(adj_dev); - pr_debug("dev_hold for %s, because of link added from %s to %s\n", - adj_dev->name, dev->name, adj_dev->name); + pr_debug("Insert adjacency: dev %s adj_dev %s adj->ref_nr %d; dev_hold on %s\n", + dev->name, adj_dev->name, adj->ref_nr, adj_dev->name); if (netdev_adjacent_is_neigh_list(dev, adj_dev, dev_list)) { ret = netdev_adjacent_sysfs_add(dev, adj_dev, dev_list); @@ -5614,17 +5617,22 @@ static void __netdev_adjacent_dev_remove(struct net_device *dev, { struct netdev_adjacent *adj; + pr_debug("Remove adjacency: dev %s adj_dev %s ref_nr %d\n", + dev->name, adj_dev->name, ref_nr); + adj = __netdev_find_adj(adj_dev, dev_list); if (!adj) { - pr_err("tried to remove device %s from %s\n", + pr_err("Adjacency does not exist for device %s from %s\n", dev->name, adj_dev->name); - BUG(); + WARN_ON(1); + return; } if (adj->ref_nr > ref_nr) { - pr_debug("%s to %s ref_nr-%d = %d\n", dev->name, adj_dev->name, - ref_nr, adj->ref_nr-ref_nr); + pr_debug("adjacency: %s to %s ref_nr - %d = %d\n", + dev->name, adj_dev->name, ref_nr, + adj->ref_nr - ref_nr); adj->ref_nr -= ref_nr; return; } @@ -5636,7 +5644,7 @@ static void __netdev_adjacent_dev_remove(struct net_device *dev, netdev_adjacent_sysfs_del(dev, adj_dev->name, dev_list); list_del_rcu(&adj->list); - pr_debug("dev_put for %s, because link removed from %s to %s\n", + pr_debug("adjacency: dev_put for %s, because link removed from %s to %s\n", adj_dev->name, dev->name, adj_dev->name); dev_put(adj_dev); kfree_rcu(adj, rcu); |