tcp: add queue_add_hash to tcp_request_sock_ops

Add queue_add_hash member to tcp_request_sock_ops so that we can later
unify tcp_v4_conn_request and tcp_v6_conn_request.
Signed-off-by: NOctavian Purdila <octavian.purdila@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/net/tcp.h

@@ -1615,6 +1615,8 @@ struct tcp_request_sock_ops {
 	int (*send_synack)(struct sock *sk, struct dst_entry *dst,
 			   struct flowi *fl, struct request_sock *req,
 			   u16 queue_mapping, struct tcp_fastopen_cookie *foc);
+	void (*queue_hash_add)(struct sock *sk, struct request_sock *req,
+			       const unsigned long timeout);
 };
 
 #ifdef CONFIG_SYN_COOKIES

net/ipv4/tcp_ipv4.c

@@ -1277,6 +1277,7 @@ static const struct tcp_request_sock_ops tcp_request_sock_ipv4_ops = {
 	.route_req	=	tcp_v4_route_req,
 	.init_seq	=	tcp_v4_init_sequence,
 	.send_synack	=	tcp_v4_send_synack,
+	.queue_hash_add =	inet_csk_reqsk_queue_hash_add,
 };
 
 int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
@@ -1403,7 +1404,7 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
 			goto drop_and_free;
 
 		tcp_rsk(req)->listener = NULL;
-		inet_csk_reqsk_queue_hash_add(sk, req, TCP_TIMEOUT_INIT);
+		af_ops->queue_hash_add(sk, req, TCP_TIMEOUT_INIT);
 	}
 
 	return 0;

net/ipv6/tcp_ipv6.c

@@ -767,6 +767,7 @@ static const struct tcp_request_sock_ops tcp_request_sock_ipv6_ops = {
 	.route_req	=	tcp_v6_route_req,
 	.init_seq	=	tcp_v6_init_sequence,
 	.send_synack	=	tcp_v6_send_synack,
+	.queue_hash_add =	inet6_csk_reqsk_queue_hash_add,
 };
 
 static void tcp_v6_send_response(struct sk_buff *skb, u32 seq, u32 ack, u32 win,
@@ -1126,7 +1127,7 @@ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
 			goto drop_and_free;
 
 		tcp_rsk(req)->listener = NULL;
-		inet6_csk_reqsk_queue_hash_add(sk, req, TCP_TIMEOUT_INIT);
+		af_ops->queue_hash_add(sk, req, TCP_TIMEOUT_INIT);
 	}
 	return 0;