- const int dif)
-{
- struct sock *sk;
- const struct hlist_node *node;
- const __u32 ports = INET_COMBINED_PORTS(sport, hnum);
- /* Optimize here for direct hit, only listening connections can
- * have wildcards anyways.
- */
- unsigned int hash = inet6_ehashfn(daddr, hnum, saddr, sport);
- struct inet_ehash_bucket *head = inet_ehash_bucket(hashinfo, hash);
-
- prefetch(head->chain.first);
- read_lock(&head->lock);
- sk_for_each(sk, node, &head->chain) {
- /* For IPV6 do the cheaper port and family tests first. */
- if (INET6_MATCH(sk, hash, saddr, daddr, ports, dif))
- goto hit; /* You sunk my battleship! */
- }
- /* Must check for a TIME_WAIT'er before going to listener hash. */
- sk_for_each(sk, node, &(head + hashinfo->ehash_size)->chain) {
- const struct inet_timewait_sock *tw = inet_twsk(sk);
-
- if(*((__u32 *)&(tw->tw_dport)) == ports &&
- sk->sk_family == PF_INET6) {
- const struct inet6_timewait_sock *tw6 = inet6_twsk(sk);
-
- if (ipv6_addr_equal(&tw6->tw_v6_daddr, saddr) &&
- ipv6_addr_equal(&tw6->tw_v6_rcv_saddr, daddr) &&
- (!sk->sk_bound_dev_if || sk->sk_bound_dev_if == dif))
- goto hit;
- }
- }
- read_unlock(&head->lock);
- return NULL;
-
-hit:
- sock_hold(sk);
- read_unlock(&head->lock);
- return sk;
-}