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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 | |
737535c5 JE |
22 | ip6table_raw_hook(unsigned int hook, struct sk_buff *skb, |
23 | const struct net_device *in, const struct net_device *out, | |
24 | int (*okfn)(struct sk_buff *)) | |
1da177e4 | 25 | { |
2b21e051 | 26 | const struct net *net = dev_net((in != NULL) ? in : out); |
1339dd91 | 27 | |
2b21e051 | 28 | return ip6t_do_table(skb, hook, in, out, net->ipv6.ip6table_raw); |
1da177e4 LT |
29 | } |
30 | ||
2b95efe7 | 31 | static struct nf_hook_ops *rawtable_ops __read_mostly; |
1da177e4 | 32 | |
8280aa61 AD |
33 | static int __net_init ip6table_raw_net_init(struct net *net) |
34 | { | |
e3eaa991 JE |
35 | struct ip6t_replace *repl; |
36 | ||
37 | repl = ip6t_alloc_initial_table(&packet_raw); | |
38 | if (repl == NULL) | |
39 | return -ENOMEM; | |
8280aa61 | 40 | net->ipv6.ip6table_raw = |
e3eaa991 JE |
41 | ip6t_register_table(net, &packet_raw, repl); |
42 | kfree(repl); | |
8280aa61 AD |
43 | if (IS_ERR(net->ipv6.ip6table_raw)) |
44 | return PTR_ERR(net->ipv6.ip6table_raw); | |
45 | return 0; | |
46 | } | |
47 | ||
48 | static void __net_exit ip6table_raw_net_exit(struct net *net) | |
49 | { | |
f54e9367 | 50 | ip6t_unregister_table(net, net->ipv6.ip6table_raw); |
8280aa61 AD |
51 | } |
52 | ||
53 | static struct pernet_operations ip6table_raw_net_ops = { | |
54 | .init = ip6table_raw_net_init, | |
55 | .exit = ip6table_raw_net_exit, | |
56 | }; | |
57 | ||
65b4b4e8 | 58 | static int __init ip6table_raw_init(void) |
1da177e4 LT |
59 | { |
60 | int ret; | |
61 | ||
8280aa61 AD |
62 | ret = register_pernet_subsys(&ip6table_raw_net_ops); |
63 | if (ret < 0) | |
64 | return ret; | |
1da177e4 LT |
65 | |
66 | /* Register hooks */ | |
2b95efe7 JE |
67 | rawtable_ops = xt_hook_link(&packet_raw, ip6table_raw_hook); |
68 | if (IS_ERR(rawtable_ops)) { | |
69 | ret = PTR_ERR(rawtable_ops); | |
1da177e4 | 70 | goto cleanup_table; |
2b95efe7 | 71 | } |
1da177e4 | 72 | |
1da177e4 LT |
73 | return ret; |
74 | ||
1da177e4 | 75 | cleanup_table: |
8280aa61 | 76 | unregister_pernet_subsys(&ip6table_raw_net_ops); |
1da177e4 LT |
77 | return ret; |
78 | } | |
79 | ||
65b4b4e8 | 80 | static void __exit ip6table_raw_fini(void) |
1da177e4 | 81 | { |
2b95efe7 | 82 | xt_hook_unlink(&packet_raw, rawtable_ops); |
8280aa61 | 83 | unregister_pernet_subsys(&ip6table_raw_net_ops); |
1da177e4 LT |
84 | } |
85 | ||
65b4b4e8 AM |
86 | module_init(ip6table_raw_init); |
87 | module_exit(ip6table_raw_fini); | |
1da177e4 | 88 | MODULE_LICENSE("GPL"); |