diff --git a/include/net/tcp.h b/include/net/tcp.h
index aed42c7..614af8b 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -266,7 +266,6 @@
 extern int sysctl_tcp_max_orphans;
 extern int sysctl_tcp_fack;
 extern int sysctl_tcp_reordering;
-extern int sysctl_tcp_ecn;
 extern int sysctl_tcp_dsack;
 extern int sysctl_tcp_wmem[3];
 extern int sysctl_tcp_rmem[3];
@@ -504,7 +503,8 @@
 #endif
 
 extern __u32 cookie_init_timestamp(struct request_sock *req);
-extern bool cookie_check_timestamp(struct tcp_options_received *opt, bool *);
+extern bool cookie_check_timestamp(struct tcp_options_received *opt,
+				struct net *net, bool *ecn_ok);
 
 /* From net/ipv6/syncookies.c */
 extern struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb);
@@ -728,11 +728,12 @@
  * notifications, we disable TCP ECN negociation.
  */
 static inline void
-TCP_ECN_create_request(struct request_sock *req, const struct sk_buff *skb)
+TCP_ECN_create_request(struct request_sock *req, const struct sk_buff *skb,
+		struct net *net)
 {
 	const struct tcphdr *th = tcp_hdr(skb);
 
-	if (sysctl_tcp_ecn && th->ece && th->cwr &&
+	if (net->ipv4.sysctl_tcp_ecn && th->ece && th->cwr &&
 	    INET_ECN_is_not_ect(TCP_SKB_CB(skb)->ip_dsfield))
 		inet_rsk(req)->ecn_ok = 1;
 }