diff --git a/include/net/request_sock.h b/include/net/request_sock.h
index 8d6e991..cac811e 100644
--- a/include/net/request_sock.h
+++ b/include/net/request_sock.h
@@ -33,7 +33,7 @@
 	struct kmem_cache	*slab;
 	int		(*rtx_syn_ack)(struct sock *sk,
 				       struct request_sock *req);
-	void		(*send_ack)(struct sk_buff *skb,
+	void		(*send_ack)(struct sock *sk, struct sk_buff *skb,
 				    struct request_sock *req);
 	void		(*send_reset)(struct sock *sk,
 				      struct sk_buff *skb);
diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h
index 1c2e3ec..b4bc6e09 100644
--- a/net/dccp/dccp.h
+++ b/net/dccp/dccp.h
@@ -229,7 +229,8 @@
 extern int  dccp_retransmit_skb(struct sock *sk);
 
 extern void dccp_send_ack(struct sock *sk);
-extern void dccp_reqsk_send_ack(struct sk_buff *sk, struct request_sock *rsk);
+extern void dccp_reqsk_send_ack(struct sock *sk, struct sk_buff *skb,
+				struct request_sock *rsk);
 
 extern void dccp_send_sync(struct sock *sk, const u64 seq,
 			   const enum dccp_pkt_type pkt_type);
diff --git a/net/dccp/minisocks.c b/net/dccp/minisocks.c
index 66dca5b..b2804e2d 100644
--- a/net/dccp/minisocks.c
+++ b/net/dccp/minisocks.c
@@ -296,7 +296,8 @@
 
 EXPORT_SYMBOL_GPL(dccp_child_process);
 
-void dccp_reqsk_send_ack(struct sk_buff *skb, struct request_sock *rsk)
+void dccp_reqsk_send_ack(struct sock *sk, struct sk_buff *skb,
+			 struct request_sock *rsk)
 {
 	DCCP_BUG("DCCP-ACK packets are never sent in LISTEN/RESPOND state");
 }
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 91a8cfd..44c1e93 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -687,14 +687,14 @@
 	inet_twsk_put(tw);
 }
 
-static void tcp_v4_reqsk_send_ack(struct sk_buff *skb,
+static void tcp_v4_reqsk_send_ack(struct sock *sk, struct sk_buff *skb,
 				  struct request_sock *req)
 {
 	tcp_v4_send_ack(skb, tcp_rsk(req)->snt_isn + 1,
 			tcp_rsk(req)->rcv_isn + 1, req->rcv_wnd,
 			req->ts_recent,
 			0,
-			tcp_v4_md5_do_lookup(skb->sk, ip_hdr(skb)->daddr));
+			tcp_v4_md5_do_lookup(sk, ip_hdr(skb)->daddr));
 }
 
 /*
diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index 204c421..6d286f5 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -609,7 +609,7 @@
 					  tcp_rsk(req)->rcv_isn + 1, tcp_rsk(req)->rcv_isn + 1 + req->rcv_wnd)) {
 		/* Out of window: send ACK and drop. */
 		if (!(flg & TCP_FLAG_RST))
-			req->rsk_ops->send_ack(skb, req);
+			req->rsk_ops->send_ack(sk, skb, req);
 		if (paws_reject)
 			NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_PAWSESTABREJECTED);
 		return NULL;
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 78185a4..5b90b36 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -69,7 +69,8 @@
 #include <linux/scatterlist.h>
 
 static void	tcp_v6_send_reset(struct sock *sk, struct sk_buff *skb);
-static void	tcp_v6_reqsk_send_ack(struct sk_buff *skb, struct request_sock *req);
+static void	tcp_v6_reqsk_send_ack(struct sock *sk, struct sk_buff *skb,
+				      struct request_sock *req);
 
 static int	tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb);
 
@@ -1138,10 +1139,11 @@
 	inet_twsk_put(tw);
 }
 
-static void tcp_v6_reqsk_send_ack(struct sk_buff *skb, struct request_sock *req)
+static void tcp_v6_reqsk_send_ack(struct sock *sk, struct sk_buff *skb,
+				  struct request_sock *req)
 {
 	tcp_v6_send_ack(skb, tcp_rsk(req)->snt_isn + 1, tcp_rsk(req)->rcv_isn + 1, req->rcv_wnd, req->ts_recent,
-			tcp_v6_md5_do_lookup(skb->sk, &ipv6_hdr(skb)->daddr));
+			tcp_v6_md5_do_lookup(sk, &ipv6_hdr(skb)->daddr));
 }