diff --git a/net/core/dev.c b/net/core/dev.c
index 75898a3..ea23353 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -5289,6 +5289,14 @@
 	return 1;
 }
 
+/**
+ *	netdev_update_features - recalculate device features
+ *	@dev: the device to check
+ *
+ *	Recalculate dev->features set and send notifications if it
+ *	has changed. Should be called after driver or hardware dependent
+ *	conditions might have changed that influence the features.
+ */
 void netdev_update_features(struct net_device *dev)
 {
 	if (__netdev_update_features(dev))
@@ -5297,6 +5305,23 @@
 EXPORT_SYMBOL(netdev_update_features);
 
 /**
+ *	netdev_change_features - recalculate device features
+ *	@dev: the device to check
+ *
+ *	Recalculate dev->features set and send notifications even
+ *	if they have not changed. Should be called instead of
+ *	netdev_update_features() if also dev->vlan_features might
+ *	have changed to allow the changes to be propagated to stacked
+ *	VLAN devices.
+ */
+void netdev_change_features(struct net_device *dev)
+{
+	__netdev_update_features(dev);
+	netdev_features_change(dev);
+}
+EXPORT_SYMBOL(netdev_change_features);
+
+/**
  *	netif_stacked_transfer_operstate -	transfer operstate
  *	@rootdev: the root or lower level device to transfer state from
  *	@dev: the device to transfer operstate to