linux 2.6.16.38 w/ vs2.0.3-rc1
[linux-2.6.git] / net / ipv6 / inet6_hashtables.c
index d2f3fc9..bb8ffb8 100644 (file)
@@ -14,6 +14,7 @@
  *      2 of the License, or (at your option) any later version.
  */
 
+#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/random.h>
 
 #include <net/inet6_hashtables.h>
 #include <net/ip.h>
 
-void __inet6_hash(struct inet_hashinfo *hashinfo,
-                               struct sock *sk)
-{
-       struct hlist_head *list;
-       rwlock_t *lock;
-
-       BUG_TRAP(sk_unhashed(sk));
-
-       if (sk->sk_state == TCP_LISTEN) {
-               list = &hashinfo->listening_hash[inet_sk_listen_hashfn(sk)];
-               lock = &hashinfo->lhash_lock;
-               inet_listen_wlock(hashinfo);
-       } else {
-               unsigned int hash;
-               sk->sk_hash = hash = inet6_sk_ehashfn(sk);
-               hash &= (hashinfo->ehash_size - 1);
-               list = &hashinfo->ehash[hash].chain;
-               lock = &hashinfo->ehash[hash].lock;
-               write_lock(lock);
-       }
-
-       __sk_add_node(sk, list);
-       sock_prot_inc_use(sk->sk_prot);
-       write_unlock(lock);
-}
-EXPORT_SYMBOL(__inet6_hash);
-
-/*
- * Sockets in TCP_CLOSE state are _always_ taken out of the hash, so
- * we need not check it for TCP lookups anymore, thanks Alexey. -DaveM
- *
- * The sockhash lock must be held as a reader here.
- */
-struct sock *__inet6_lookup_established(struct inet_hashinfo *hashinfo,
-                                          const struct in6_addr *saddr,
-                                          const u16 sport,
-                                          const struct in6_addr *daddr,
-                                          const u16 hnum,
-                                          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;
-}
-EXPORT_SYMBOL(__inet6_lookup_established);
-
 struct sock *inet6_lookup_listener(struct inet_hashinfo *hashinfo,
                                   const struct in6_addr *daddr,
                                   const unsigned short hnum, const int dif)