ipv4: Make caller provide flowi4 key to inet_csk_route_req().

This way the caller can get at the fully resolved fl4->{daddr,saddr}
etc.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index f67fb34..7e0bc60 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -769,11 +769,12 @@
 			      struct request_values *rvp)
 {
 	const struct inet_request_sock *ireq = inet_rsk(req);
+	struct flowi4 fl4;
 	int err = -1;
 	struct sk_buff * skb;
 
 	/* First, grab a route. */
-	if (!dst && (dst = inet_csk_route_req(sk, req)) == NULL)
+	if (!dst && (dst = inet_csk_route_req(sk, &fl4, req)) == NULL)
 		return -1;
 
 	skb = tcp_make_synack(sk, dst, req, rvp);
@@ -1338,6 +1339,7 @@
 		req->cookie_ts = tmp_opt.tstamp_ok;
 	} else if (!isn) {
 		struct inet_peer *peer = NULL;
+		struct flowi4 fl4;
 
 		/* VJ's idea. We save last timestamp seen
 		 * from the destination in peer table, when entering
@@ -1350,7 +1352,7 @@
 		 */
 		if (tmp_opt.saw_tstamp &&
 		    tcp_death_row.sysctl_tw_recycle &&
-		    (dst = inet_csk_route_req(sk, req)) != NULL &&
+		    (dst = inet_csk_route_req(sk, &fl4, req)) != NULL &&
 		    (peer = rt_get_peer((struct rtable *)dst)) != NULL &&
 		    peer->daddr.addr.a4 == saddr) {
 			inet_peer_refcheck(peer);