projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
| Commit | Line | Data |
|---|---|---|
| 5324a040 ACM |
1 | /* |
| 2 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
| 3 | * operating system. INET is implemented using the BSD Socket | |
| 4 | * interface as the means of communication with the user level. | |
| 5 | * | |
| 6 | * Generic INET6 transport hashtables | |
| 7 | * | |
| 8 | * Authors: Lotsa people, from code originally in tcp | |
| 9 | * | |
| 10 | * This program is free software; you can redistribute it and/or | |
| 11 | * modify it under the terms of the GNU General Public License | |
| 12 | * as published by the Free Software Foundation; either version | |
| 13 | * 2 of the License, or (at your option) any later version. | |
| 14 | */ | |
| 15 | ||
| 16 | #include <linux/config.h> | |
| 17 | ||
| 18 | #include <linux/module.h> | |
| 19 | ||
| 20 | #include <net/inet_connection_sock.h> | |
| 21 | #include <net/inet_hashtables.h> | |
| 22 | #include <net/inet6_hashtables.h> | |
| 23 | ||
| 24 | struct sock *inet6_lookup_listener(struct inet_hashinfo *hashinfo, | |
| 25 | const struct in6_addr *daddr, | |
| 26 | const unsigned short hnum, const int dif) | |
| 27 | { | |
| 28 | struct sock *sk; | |
| 29 | const struct hlist_node *node; | |
| 30 | struct sock *result = NULL; | |
| 31 | int score, hiscore = 0; | |
| 32 | ||
| 33 | read_lock(&hashinfo->lhash_lock); | |
| 34 | sk_for_each(sk, node, &hashinfo->listening_hash[inet_lhashfn(hnum)]) { | |
| 35 | if (inet_sk(sk)->num == hnum && sk->sk_family == PF_INET6) { | |
| 36 | const struct ipv6_pinfo *np = inet6_sk(sk); | |
| 37 | ||
| 38 | score = 1; | |
| 39 | if (!ipv6_addr_any(&np->rcv_saddr)) { | |
| 40 | if (!ipv6_addr_equal(&np->rcv_saddr, daddr)) | |
| 41 | continue; | |
| 42 | score++; | |
| 43 | } | |
| 44 | if (sk->sk_bound_dev_if) { | |
| 45 | if (sk->sk_bound_dev_if != dif) | |
| 46 | continue; | |
| 47 | score++; | |
| 48 | } | |
| 49 | if (score == 3) { | |
| 50 | result = sk; | |
| 51 | break; | |
| 52 | } | |
| 53 | if (score > hiscore) { | |
| 54 | hiscore = score; | |
| 55 | result = sk; | |
| 56 | } | |
| 57 | } | |
| 58 | } | |
| 59 | if (result) | |
| 60 | sock_hold(result); | |
| 61 | read_unlock(&hashinfo->lhash_lock); | |
| 62 | return result; | |
| 63 | } | |
| 64 | ||
| 65 | EXPORT_SYMBOL_GPL(inet6_lookup_listener); | |
| 66 | ||
| 67 | struct sock *inet6_lookup(struct inet_hashinfo *hashinfo, | |
| 68 | const struct in6_addr *saddr, const u16 sport, | |
| 69 | const struct in6_addr *daddr, const u16 dport, | |
| 70 | const int dif) | |
| 71 | { | |
| 72 | struct sock *sk; | |
| 73 | ||
| 74 | local_bh_disable(); | |
| 75 | sk = __inet6_lookup(hashinfo, saddr, sport, daddr, ntohs(dport), dif); | |
| 76 | local_bh_enable(); | |
| 77 | ||
| 78 | return sk; | |
| 79 | } | |
| 80 | ||
| 81 | EXPORT_SYMBOL_GPL(inet6_lookup); |