diff --git a/include/net/act_api.h b/include/net/act_api.h
index 88c1f99bae46d481bf6f2f60121ce0076aeb05d8..e0a9c2003b247cdaaee7a8d01fb3a20eb519e932 100644
--- a/include/net/act_api.h
+++ b/include/net/act_api.h
@@ -97,6 +97,7 @@ struct tc_action_ops {
 			const struct tc_action_ops *,
 			struct netlink_ext_ack *);
 	void	(*stats_update)(struct tc_action *, u64, u32, u64);
+	size_t  (*get_fill_size)(const struct tc_action *act);
 	struct net_device *(*get_dev)(const struct tc_action *a);
 };