inet: Pass flowi to ->queue_xmit().

This allows us to acquire the exact route keying information from the
protocol, however that might be managed.

It handles all of the possibilities, from the simplest case of storing
the key in inet->cork.fl to the more complex setup SCTP has where
individual transports determine the flow.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/ip.h b/include/net/ip.h
index 095e392..acf8b78 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -104,7 +104,7 @@
 extern void		ip_send_check(struct iphdr *ip);
 extern int		__ip_local_out(struct sk_buff *skb);
 extern int		ip_local_out(struct sk_buff *skb);
-extern int		ip_queue_xmit(struct sk_buff *skb);
+extern int		ip_queue_xmit(struct sk_buff *skb, struct flowi *fl);
 extern void		ip_init(void);
 extern int		ip_append_data(struct sock *sk,
 				       int getfrag(void *from, char *to, int offset, int len,