projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1d49144c PM |
1 | /* |
| 2 | * Copyright (c) 2012-2014 Patrick McHardy <kaber@trash.net> | |
| 3 | * | |
| 4 | * This program is free software; you can redistribute it and/or modify | |
| 5 | * it under the terms of the GNU General Public License version 2 as | |
| 6 | * published by the Free Software Foundation. | |
| 7 | */ | |
| 8 | ||
| 9 | #include <linux/init.h> | |
| 10 | #include <linux/module.h> | |
| 11 | #include <linux/ip.h> | |
| 12 | #include <linux/netfilter_ipv4.h> | |
| 13 | #include <linux/netfilter_ipv6.h> | |
| 14 | #include <net/netfilter/nf_tables.h> | |
| 15 | #include <net/netfilter/nf_tables_ipv4.h> | |
| 16 | #include <net/netfilter/nf_tables_ipv6.h> | |
| 17 | #include <net/ip.h> | |
| 18 | ||
| 19 | static void nft_inet_hook_ops_init(struct nf_hook_ops *ops, unsigned int n) | |
| 20 | { | |
| 21 | struct nft_af_info *afi; | |
| 22 | ||
| 23 | if (n == 1) | |
| 24 | afi = &nft_af_ipv4; | |
| 25 | else | |
| 26 | afi = &nft_af_ipv6; | |
| 27 | ||
| 28 | ops->pf = afi->family; | |
| 29 | if (afi->hooks[ops->hooknum]) | |
| 30 | ops->hook = afi->hooks[ops->hooknum]; | |
| 31 | } | |
| 32 | ||
| 33 | static struct nft_af_info nft_af_inet __read_mostly = { | |
| 34 | .family = NFPROTO_INET, | |
| 35 | .nhooks = NF_INET_NUMHOOKS, | |
| 36 | .owner = THIS_MODULE, | |
| 37 | .nops = 2, | |
| 38 | .hook_ops_init = nft_inet_hook_ops_init, | |
| 39 | }; | |
| 40 | ||
| 41 | static int __net_init nf_tables_inet_init_net(struct net *net) | |
| 42 | { | |
| 43 | net->nft.inet = kmalloc(sizeof(struct nft_af_info), GFP_KERNEL); | |
| 44 | if (net->nft.inet == NULL) | |
| 45 | return -ENOMEM; | |
| 46 | memcpy(net->nft.inet, &nft_af_inet, sizeof(nft_af_inet)); | |
| 47 | ||
| 48 | if (nft_register_afinfo(net, net->nft.inet) < 0) | |
| 49 | goto err; | |
| 50 | ||
| 51 | return 0; | |
| 52 | ||
| 53 | err: | |
| 54 | kfree(net->nft.inet); | |
| 55 | return -ENOMEM; | |
| 56 | } | |
| 57 | ||
| 58 | static void __net_exit nf_tables_inet_exit_net(struct net *net) | |
| 59 | { | |
| 60 | nft_unregister_afinfo(net->nft.inet); | |
| 61 | kfree(net->nft.inet); | |
| 62 | } | |
| 63 | ||
| 64 | static struct pernet_operations nf_tables_inet_net_ops = { | |
| 65 | .init = nf_tables_inet_init_net, | |
| 66 | .exit = nf_tables_inet_exit_net, | |
| 67 | }; | |
| 68 | ||
| 2a37d755 | 69 | static const struct nf_chain_type filter_inet = { |
| 1d49144c PM |
70 | .name = "filter", |
| 71 | .type = NFT_CHAIN_T_DEFAULT, | |
| fa2c1de0 PM |
72 | .family = NFPROTO_INET, |
| 73 | .owner = THIS_MODULE, | |
| 1d49144c PM |
74 | .hook_mask = (1 << NF_INET_LOCAL_IN) | |
| 75 | (1 << NF_INET_LOCAL_OUT) | | |
| 76 | (1 << NF_INET_FORWARD) | | |
| 77 | (1 << NF_INET_PRE_ROUTING) | | |
| 78 | (1 << NF_INET_POST_ROUTING), | |
| 79 | }; | |
| 80 | ||
| 81 | static int __init nf_tables_inet_init(void) | |
| 82 | { | |
| cf4dfa85 PNA |
83 | int ret; |
| 84 | ||
| 1d49144c | 85 | nft_register_chain_type(&filter_inet); |
| cf4dfa85 PNA |
86 | ret = register_pernet_subsys(&nf_tables_inet_net_ops); |
| 87 | if (ret < 0) | |
| 88 | nft_unregister_chain_type(&filter_inet); | |
| 89 | ||
| 90 | return ret; | |
| 1d49144c PM |
91 | } |
| 92 | ||
| 93 | static void __exit nf_tables_inet_exit(void) | |
| 94 | { | |
| 95 | unregister_pernet_subsys(&nf_tables_inet_net_ops); | |
| 96 | nft_unregister_chain_type(&filter_inet); | |
| 97 | } | |
| 98 | ||
| 99 | module_init(nf_tables_inet_init); | |
| 100 | module_exit(nf_tables_inet_exit); | |
| 101 | ||
| 102 | MODULE_LICENSE("GPL"); | |
| 103 | MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); | |
| 104 | MODULE_ALIAS_NFT_FAMILY(1); |