[ICSK]: Introduce inet_csk_clone
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index 2712400..136ada0 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -399,3 +399,28 @@
}
EXPORT_SYMBOL_GPL(inet_csk_reqsk_queue_hash_add);
+
+struct sock *inet_csk_clone(struct sock *sk, const struct request_sock *req,
+ const unsigned int __nocast priority)
+{
+ struct sock *newsk = sk_clone(sk, priority);
+
+ if (newsk != NULL) {
+ struct inet_connection_sock *newicsk = inet_csk(newsk);
+
+ newsk->sk_state = TCP_SYN_RECV;
+ newicsk->icsk_bind_hash = NULL;
+
+ inet_sk(newsk)->dport = inet_rsk(req)->rmt_port;
+ newsk->sk_write_space = sk_stream_write_space;
+
+ newicsk->icsk_retransmits = 0;
+ newicsk->icsk_backoff = 0;
+
+ /* Deinitialize accept_queue to trap illegal accesses. */
+ memset(&newicsk->icsk_accept_queue, 0, sizeof(newicsk->icsk_accept_queue));
+ }
+ return newsk;
+}
+
+EXPORT_SYMBOL_GPL(inet_csk_clone);
