+ if (sk->sk_state == TCP_NEW_SYN_RECV) {
+ struct request_sock *req = inet_reqsk(sk);
+ struct sock *nsk;
+
+ sk = req->rsk_listener;
+ tcp_v6_fill_cb(skb, hdr, th);
+ if (tcp_v6_inbound_md5_hash(sk, skb)) {
+ reqsk_put(req);
+ goto discard_it;
+ }
+ if (unlikely(sk->sk_state != TCP_LISTEN)) {
+ inet_csk_reqsk_queue_drop_and_put(sk, req);
+ goto lookup;
+ }
+ sock_hold(sk);
+ nsk = tcp_check_req(sk, skb, req, false);
+ if (!nsk) {
+ reqsk_put(req);
+ goto discard_and_relse;
+ }
+ if (nsk == sk) {
+ reqsk_put(req);
+ tcp_v6_restore_cb(skb);
+ } else if (tcp_child_process(sk, nsk, skb)) {
+ tcp_v6_send_reset(nsk, skb);
+ goto discard_and_relse;
+ } else {
+ sock_put(sk);
+ return 0;
+ }
+ }