Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * IPv6 raw table, a port of the IPv4 raw table to IPv6 | |
3 | * | |
4 | * Copyright (C) 2003 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> | |
5 | */ | |
6 | #include <linux/module.h> | |
7 | #include <linux/netfilter_ipv6/ip6_tables.h> | |
5a0e3ad6 | 8 | #include <linux/slab.h> |
1da177e4 | 9 | |
6e23ae2a | 10 | #define RAW_VALID_HOOKS ((1 << NF_INET_PRE_ROUTING) | (1 << NF_INET_LOCAL_OUT)) |
1da177e4 | 11 | |
35aad0ff | 12 | static const struct xt_table packet_raw = { |
1ab1457c YH |
13 | .name = "raw", |
14 | .valid_hooks = RAW_VALID_HOOKS, | |
2e4e6a17 | 15 | .me = THIS_MODULE, |
f88e6a8a | 16 | .af = NFPROTO_IPV6, |
9c138866 | 17 | .priority = NF_IP6_PRI_RAW, |
1da177e4 LT |
18 | }; |
19 | ||
20 | /* The work comes in here from netfilter.c. */ | |
21 | static unsigned int | |
795aa6ef | 22 | ip6table_raw_hook(const struct nf_hook_ops *ops, struct sk_buff *skb, |
238e54c9 | 23 | const struct nf_hook_state *state) |
1da177e4 | 24 | { |
238e54c9 | 25 | const struct net *net = dev_net(state->in ? state->in : state->out); |
1339dd91 | 26 | |
8f8a3715 | 27 | return ip6t_do_table(skb, ops->hooknum, state, net->ipv6.ip6table_raw); |
1da177e4 LT |
28 | } |
29 | ||
2b95efe7 | 30 | static struct nf_hook_ops *rawtable_ops __read_mostly; |
1da177e4 | 31 | |
8280aa61 AD |
32 | static int __net_init ip6table_raw_net_init(struct net *net) |
33 | { | |
e3eaa991 JE |
34 | struct ip6t_replace *repl; |
35 | ||
36 | repl = ip6t_alloc_initial_table(&packet_raw); | |
37 | if (repl == NULL) | |
38 | return -ENOMEM; | |
8280aa61 | 39 | net->ipv6.ip6table_raw = |
e3eaa991 JE |
40 | ip6t_register_table(net, &packet_raw, repl); |
41 | kfree(repl); | |
8c6ffba0 | 42 | return PTR_ERR_OR_ZERO(net->ipv6.ip6table_raw); |
8280aa61 AD |
43 | } |
44 | ||
45 | static void __net_exit ip6table_raw_net_exit(struct net *net) | |
46 | { | |
f54e9367 | 47 | ip6t_unregister_table(net, net->ipv6.ip6table_raw); |
8280aa61 AD |
48 | } |
49 | ||
50 | static struct pernet_operations ip6table_raw_net_ops = { | |
51 | .init = ip6table_raw_net_init, | |
52 | .exit = ip6table_raw_net_exit, | |
53 | }; | |
54 | ||
65b4b4e8 | 55 | static int __init ip6table_raw_init(void) |
1da177e4 LT |
56 | { |
57 | int ret; | |
58 | ||
8280aa61 AD |
59 | ret = register_pernet_subsys(&ip6table_raw_net_ops); |
60 | if (ret < 0) | |
61 | return ret; | |
1da177e4 LT |
62 | |
63 | /* Register hooks */ | |
2b95efe7 JE |
64 | rawtable_ops = xt_hook_link(&packet_raw, ip6table_raw_hook); |
65 | if (IS_ERR(rawtable_ops)) { | |
66 | ret = PTR_ERR(rawtable_ops); | |
1da177e4 | 67 | goto cleanup_table; |
2b95efe7 | 68 | } |
1da177e4 | 69 | |
1da177e4 LT |
70 | return ret; |
71 | ||
1da177e4 | 72 | cleanup_table: |
8280aa61 | 73 | unregister_pernet_subsys(&ip6table_raw_net_ops); |
1da177e4 LT |
74 | return ret; |
75 | } | |
76 | ||
65b4b4e8 | 77 | static void __exit ip6table_raw_fini(void) |
1da177e4 | 78 | { |
2b95efe7 | 79 | xt_hook_unlink(&packet_raw, rawtable_ops); |
8280aa61 | 80 | unregister_pernet_subsys(&ip6table_raw_net_ops); |
1da177e4 LT |
81 | } |
82 | ||
65b4b4e8 AM |
83 | module_init(ip6table_raw_init); |
84 | module_exit(ip6table_raw_fini); | |
1da177e4 | 85 | MODULE_LICENSE("GPL"); |