[ICSK]: Introduce inet_csk_clone

Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/inet_connection_sock.h

@@ -77,6 +77,10 @@ static inline struct inet_connection_sock *inet_csk(const struct sock *sk)
 	return (struct inet_connection_sock *)sk;
 }
 
+extern struct sock *inet_csk_clone(struct sock *sk,
+				   const struct request_sock *req,
+				   const unsigned int __nocast priority);
+
 enum inet_csk_ack_state_t {
 	ICSK_ACK_SCHED	= 1,
 	ICSK_ACK_TIMER  = 2,