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-rw-r--r--net/core/dev.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index a4f3b0a9aeaf..b92d63bfde7a 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -6087,6 +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;