diff options
Diffstat (limited to 'include/net/inet6_hashtables.h')
| -rw-r--r-- | include/net/inet6_hashtables.h | 70 |
1 files changed, 3 insertions, 67 deletions
diff --git a/include/net/inet6_hashtables.h b/include/net/inet6_hashtables.h index 25f708ff020e..59f0c83d55a2 100644 --- a/include/net/inet6_hashtables.h +++ b/include/net/inet6_hashtables.h | |||
| @@ -48,31 +48,7 @@ static inline int inet6_sk_ehashfn(const struct sock *sk) | |||
| 48 | return inet6_ehashfn(laddr, lport, faddr, fport); | 48 | return inet6_ehashfn(laddr, lport, faddr, fport); |
| 49 | } | 49 | } |
| 50 | 50 | ||
| 51 | static inline void __inet6_hash(struct inet_hashinfo *hashinfo, | 51 | extern void __inet6_hash(struct inet_hashinfo *hashinfo, struct sock *sk); |
| 52 | struct sock *sk) | ||
| 53 | { | ||
| 54 | struct hlist_head *list; | ||
| 55 | rwlock_t *lock; | ||
| 56 | |||
| 57 | BUG_TRAP(sk_unhashed(sk)); | ||
| 58 | |||
| 59 | if (sk->sk_state == TCP_LISTEN) { | ||
| 60 | list = &hashinfo->listening_hash[inet_sk_listen_hashfn(sk)]; | ||
| 61 | lock = &hashinfo->lhash_lock; | ||
| 62 | inet_listen_wlock(hashinfo); | ||
| 63 | } else { | ||
| 64 | unsigned int hash; | ||
| 65 | sk->sk_hash = hash = inet6_sk_ehashfn(sk); | ||
| 66 | hash &= (hashinfo->ehash_size - 1); | ||
| 67 | list = &hashinfo->ehash[hash].chain; | ||
| 68 | lock = &hashinfo->ehash[hash].lock; | ||
| 69 | write_lock(lock); | ||
| 70 | } | ||
| 71 | |||
| 72 | __sk_add_node(sk, list); | ||
| 73 | sock_prot_inc_use(sk->sk_prot); | ||
| 74 | write_unlock(lock); | ||
| 75 | } | ||
| 76 | 52 | ||
| 77 | /* | 53 | /* |
| 78 | * Sockets in TCP_CLOSE state are _always_ taken out of the hash, so | 54 | * Sockets in TCP_CLOSE state are _always_ taken out of the hash, so |
| @@ -80,52 +56,12 @@ static inline void __inet6_hash(struct inet_hashinfo *hashinfo, | |||
| 80 | * | 56 | * |
| 81 | * The sockhash lock must be held as a reader here. | 57 | * The sockhash lock must be held as a reader here. |
| 82 | */ | 58 | */ |
| 83 | static inline struct sock * | 59 | extern struct sock *__inet6_lookup_established(struct inet_hashinfo *hashinfo, |
| 84 | __inet6_lookup_established(struct inet_hashinfo *hashinfo, | ||
| 85 | const struct in6_addr *saddr, | 60 | const struct in6_addr *saddr, |
| 86 | const u16 sport, | 61 | const u16 sport, |
| 87 | const struct in6_addr *daddr, | 62 | const struct in6_addr *daddr, |
| 88 | const u16 hnum, | 63 | const u16 hnum, |
| 89 | const int dif) | 64 | const int dif); |
| 90 | { | ||
| 91 | struct sock *sk; | ||
| 92 | const struct hlist_node *node; | ||
| 93 | const __u32 ports = INET_COMBINED_PORTS(sport, hnum); | ||
| 94 | /* Optimize here for direct hit, only listening connections can | ||
| 95 | * have wildcards anyways. | ||
| 96 | */ | ||
| 97 | unsigned int hash = inet6_ehashfn(daddr, hnum, saddr, sport); | ||
| 98 | struct inet_ehash_bucket *head = inet_ehash_bucket(hashinfo, hash); | ||
| 99 | |||
| 100 | prefetch(head->chain.first); | ||
| 101 | read_lock(&head->lock); | ||
| 102 | sk_for_each(sk, node, &head->chain) { | ||
| 103 | /* For IPV6 do the cheaper port and family tests first. */ | ||
| 104 | if (INET6_MATCH(sk, hash, saddr, daddr, ports, dif)) | ||
| 105 | goto hit; /* You sunk my battleship! */ | ||
| 106 | } | ||
| 107 | /* Must check for a TIME_WAIT'er before going to listener hash. */ | ||
| 108 | sk_for_each(sk, node, &(head + hashinfo->ehash_size)->chain) { | ||
| 109 | const struct inet_timewait_sock *tw = inet_twsk(sk); | ||
| 110 | |||
| 111 | if(*((__u32 *)&(tw->tw_dport)) == ports && | ||
| 112 | sk->sk_family == PF_INET6) { | ||
| 113 | const struct inet6_timewait_sock *tw6 = inet6_twsk(sk); | ||
| 114 | |||
| 115 | if (ipv6_addr_equal(&tw6->tw_v6_daddr, saddr) && | ||
| 116 | ipv6_addr_equal(&tw6->tw_v6_rcv_saddr, daddr) && | ||
| 117 | (!sk->sk_bound_dev_if || sk->sk_bound_dev_if == dif)) | ||
| 118 | goto hit; | ||
| 119 | } | ||
| 120 | } | ||
| 121 | read_unlock(&head->lock); | ||
| 122 | return NULL; | ||
| 123 | |||
| 124 | hit: | ||
| 125 | sock_hold(sk); | ||
| 126 | read_unlock(&head->lock); | ||
| 127 | return sk; | ||
| 128 | } | ||
| 129 | 65 | ||
| 130 | extern struct sock *inet6_lookup_listener(struct inet_hashinfo *hashinfo, | 66 | extern struct sock *inet6_lookup_listener(struct inet_hashinfo *hashinfo, |
| 131 | const struct in6_addr *daddr, | 67 | const struct in6_addr *daddr, |
