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/dccp/ipv4.c b/net/dccp/ipv4.c
index 46b15e9..8c36adf 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -497,8 +497,9 @@
 	int err = -1;
 	struct sk_buff *skb;
 	struct dst_entry *dst;
+	struct flowi4 fl4;
 
-	dst = inet_csk_route_req(sk, req);
+	dst = inet_csk_route_req(sk, &fl4, req);
 	if (dst == NULL)
 		goto out;