diff options
Diffstat (limited to 'net/core/dev.c')
| -rw-r--r-- | net/core/dev.c | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index aba10d2a8bc3..b92d63bfde7a 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -5445,6 +5445,52 @@ void *netdev_lower_get_next(struct net_device *dev, struct list_head **iter) EXPORT_SYMBOL(netdev_lower_get_next); /** + * netdev_all_lower_get_next - Get the next device from all lower neighbour list + * @dev: device + * @iter: list_head ** of the current position + * + * Gets the next netdev_adjacent from the dev's all lower neighbour + * list, starting from iter position. The caller must hold RTNL lock or + * its own locking that guarantees that the neighbour all lower + * list will remain unchanged. + */ +struct net_device *netdev_all_lower_get_next(struct net_device *dev, struct list_head **iter) +{ + struct netdev_adjacent *lower; + + lower = list_entry(*iter, struct netdev_adjacent, list); + + if (&lower->list == &dev->all_adj_list.lower) + return NULL; + + *iter = lower->list.next; + + return lower->dev; +} +EXPORT_SYMBOL(netdev_all_lower_get_next); + +/** + * netdev_all_lower_get_next_rcu - Get the next device from all + * lower neighbour list, RCU variant + * @dev: device + * @iter: list_head ** of the current position + * + * Gets the next netdev_adjacent from the dev's all lower neighbour + * list, starting from iter position. The caller must hold RCU read lock. + */ +struct net_device *netdev_all_lower_get_next_rcu(struct net_device *dev, + struct list_head **iter) +{ + struct netdev_adjacent *lower; + + lower = list_first_or_null_rcu(&dev->all_adj_list.lower, + struct netdev_adjacent, list); + + return lower ? lower->dev : NULL; +} +EXPORT_SYMBOL(netdev_all_lower_get_next_rcu); + +/** * netdev_lower_get_first_private_rcu - Get the first ->private from the * lower neighbour list, RCU * variant @@ -6041,6 +6087,50 @@ void netdev_lower_state_changed(struct net_device *lower_dev, } EXPORT_SYMBOL(netdev_lower_state_changed); +int netdev_default_l2upper_neigh_construct(struct net_device *dev, + struct neighbour *n) +{ + struct net_device *lower_dev, *stop_dev; + struct list_head *iter; + int err; + + netdev_for_each_lower_dev(dev, lower_dev, iter) { + if (!lower_dev->netdev_ops->ndo_neigh_construct) + continue; + err = lower_dev->netdev_ops->ndo_neigh_construct(lower_dev, n); + if (err) { + stop_dev = lower_dev; + goto rollback; + } + } + return 0; + +rollback: + netdev_for_each_lower_dev(dev, lower_dev, iter) { + if (lower_dev == stop_dev) + break; + if (!lower_dev->netdev_ops->ndo_neigh_destroy) + continue; + lower_dev->netdev_ops->ndo_neigh_destroy(lower_dev, n); + } + return err; +} +EXPORT_SYMBOL_GPL(netdev_default_l2upper_neigh_construct); + +void netdev_default_l2upper_neigh_destroy(struct net_device *dev, + struct neighbour *n) +{ + struct net_device *lower_dev; + struct list_head *iter; + + netdev_for_each_lower_dev(dev, lower_dev, iter) { + if (!lower_dev->netdev_ops->ndo_neigh_destroy) + continue; + lower_dev->netdev_ops->ndo_neigh_destroy(lower_dev, n); + } +} +EXPORT_SYMBOL_GPL(netdev_default_l2upper_neigh_destroy); + static void dev_change_rx_flags(struct net_device *dev, int flags) { const struct net_device_ops *ops = dev->netdev_ops; |