diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h
index ddacc23..a75c740 100644
--- a/net/dccp/dccp.h
+++ b/net/dccp/dccp.h
@@ -396,6 +396,8 @@
 extern int dccp_insert_option_elapsed_time(struct sock *sk,
 					    struct sk_buff *skb,
 					    u32 elapsed_time);
+extern u32 dccp_timestamp(void);
+extern void dccp_timestamping_init(void);
 extern int dccp_insert_option_timestamp(struct sock *sk,
 					 struct sk_buff *skb);
 extern int dccp_insert_option(struct sock *sk, struct sk_buff *skb,