diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index daf13d3..a3fccc8 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1981,6 +1981,9 @@
 					unsigned long mask);
 unsigned long netdev_fix_features(unsigned long features, const char *name);
 
+void netif_stacked_transfer_operstate(const struct net_device *rootdev,
+					struct net_device *dev);
+
 static inline int net_gso_ok(int features, int gso_type)
 {
 	int feature = gso_type << NETIF_F_GSO_SHIFT;