diff --git a/net/tipc/socket.h b/net/tipc/socket.h
index 235b967..b11575a 100644
--- a/net/tipc/socket.h
+++ b/net/tipc/socket.h
@@ -75,4 +75,6 @@
 bool tipc_sk_overlimit1(struct sock *sk, struct sk_buff *skb);
 bool tipc_sk_overlimit2(struct sock *sk, struct sk_buff *skb);
 
+int tsk_set_importance(struct sock *sk, int imp);
+
 #endif