Tomasz Bursztyka | eb31628 | 2013-10-10 13:39:19 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2011 Patrick McHardy <kaber@trash.net> |
| 3 | * Copyright (c) 2012 Intel Corporation |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms and conditions of the GNU General Public License, |
| 7 | * version 2, as published by the Free Software Foundation. |
| 8 | * |
| 9 | */ |
| 10 | |
| 11 | #include <linux/module.h> |
| 12 | #include <linux/init.h> |
| 13 | #include <linux/list.h> |
| 14 | #include <linux/skbuff.h> |
| 15 | #include <linux/ip.h> |
| 16 | #include <linux/netfilter.h> |
| 17 | #include <linux/netfilter_ipv6.h> |
| 18 | #include <linux/netfilter/nf_tables.h> |
| 19 | #include <net/netfilter/nf_conntrack.h> |
| 20 | #include <net/netfilter/nf_nat.h> |
| 21 | #include <net/netfilter/nf_nat_core.h> |
| 22 | #include <net/netfilter/nf_tables.h> |
| 23 | #include <net/netfilter/nf_tables_ipv6.h> |
| 24 | #include <net/netfilter/nf_nat_l3proto.h> |
| 25 | #include <net/ipv6.h> |
| 26 | |
Pablo Neira Ayuso | 876665e | 2014-09-09 16:31:09 +0200 | [diff] [blame] | 27 | static unsigned int nft_nat_do_chain(const struct nf_hook_ops *ops, |
| 28 | struct sk_buff *skb, |
David S. Miller | 8fe2238 | 2015-04-03 21:05:07 -0400 | [diff] [blame] | 29 | const struct nf_hook_state *state, |
Pablo Neira Ayuso | 876665e | 2014-09-09 16:31:09 +0200 | [diff] [blame] | 30 | struct nf_conn *ct) |
| 31 | { |
| 32 | struct nft_pktinfo pkt; |
| 33 | |
David S. Miller | 073bfd5 | 2015-04-03 21:16:25 -0400 | [diff] [blame] | 34 | nft_set_pktinfo_ipv6(&pkt, ops, skb, state); |
Pablo Neira Ayuso | 876665e | 2014-09-09 16:31:09 +0200 | [diff] [blame] | 35 | |
| 36 | return nft_do_chain(&pkt, ops); |
| 37 | } |
Tomasz Bursztyka | eb31628 | 2013-10-10 13:39:19 +0200 | [diff] [blame] | 38 | |
Pablo Neira Ayuso | 2a5538e | 2014-08-25 12:05:27 +0200 | [diff] [blame] | 39 | static unsigned int nft_nat_ipv6_fn(const struct nf_hook_ops *ops, |
Pablo Neira Ayuso | 876665e | 2014-09-09 16:31:09 +0200 | [diff] [blame] | 40 | struct sk_buff *skb, |
David S. Miller | 238e54c | 2015-04-03 20:32:56 -0400 | [diff] [blame] | 41 | const struct nf_hook_state *state) |
Tomasz Bursztyka | eb31628 | 2013-10-10 13:39:19 +0200 | [diff] [blame] | 42 | { |
David S. Miller | 8fe2238 | 2015-04-03 21:05:07 -0400 | [diff] [blame] | 43 | return nf_nat_ipv6_fn(ops, skb, state, nft_nat_do_chain); |
Tomasz Bursztyka | eb31628 | 2013-10-10 13:39:19 +0200 | [diff] [blame] | 44 | } |
| 45 | |
Pablo Neira Ayuso | 876665e | 2014-09-09 16:31:09 +0200 | [diff] [blame] | 46 | static unsigned int nft_nat_ipv6_in(const struct nf_hook_ops *ops, |
| 47 | struct sk_buff *skb, |
David S. Miller | 238e54c | 2015-04-03 20:32:56 -0400 | [diff] [blame] | 48 | const struct nf_hook_state *state) |
Tomasz Bursztyka | eb31628 | 2013-10-10 13:39:19 +0200 | [diff] [blame] | 49 | { |
David S. Miller | 8fe2238 | 2015-04-03 21:05:07 -0400 | [diff] [blame] | 50 | return nf_nat_ipv6_in(ops, skb, state, nft_nat_do_chain); |
Tomasz Bursztyka | eb31628 | 2013-10-10 13:39:19 +0200 | [diff] [blame] | 51 | } |
| 52 | |
Pablo Neira Ayuso | 876665e | 2014-09-09 16:31:09 +0200 | [diff] [blame] | 53 | static unsigned int nft_nat_ipv6_out(const struct nf_hook_ops *ops, |
| 54 | struct sk_buff *skb, |
David S. Miller | 238e54c | 2015-04-03 20:32:56 -0400 | [diff] [blame] | 55 | const struct nf_hook_state *state) |
Tomasz Bursztyka | eb31628 | 2013-10-10 13:39:19 +0200 | [diff] [blame] | 56 | { |
David S. Miller | 8fe2238 | 2015-04-03 21:05:07 -0400 | [diff] [blame] | 57 | return nf_nat_ipv6_out(ops, skb, state, nft_nat_do_chain); |
Tomasz Bursztyka | eb31628 | 2013-10-10 13:39:19 +0200 | [diff] [blame] | 58 | } |
| 59 | |
Pablo Neira Ayuso | 876665e | 2014-09-09 16:31:09 +0200 | [diff] [blame] | 60 | static unsigned int nft_nat_ipv6_local_fn(const struct nf_hook_ops *ops, |
| 61 | struct sk_buff *skb, |
David S. Miller | 238e54c | 2015-04-03 20:32:56 -0400 | [diff] [blame] | 62 | const struct nf_hook_state *state) |
Tomasz Bursztyka | eb31628 | 2013-10-10 13:39:19 +0200 | [diff] [blame] | 63 | { |
David S. Miller | 8fe2238 | 2015-04-03 21:05:07 -0400 | [diff] [blame] | 64 | return nf_nat_ipv6_local_fn(ops, skb, state, nft_nat_do_chain); |
Tomasz Bursztyka | eb31628 | 2013-10-10 13:39:19 +0200 | [diff] [blame] | 65 | } |
| 66 | |
Patrick McHardy | 2a37d75 | 2014-01-09 18:42:37 +0000 | [diff] [blame] | 67 | static const struct nf_chain_type nft_chain_nat_ipv6 = { |
Tomasz Bursztyka | eb31628 | 2013-10-10 13:39:19 +0200 | [diff] [blame] | 68 | .name = "nat", |
| 69 | .type = NFT_CHAIN_T_NAT, |
Patrick McHardy | fa2c1de | 2014-01-09 18:42:38 +0000 | [diff] [blame] | 70 | .family = NFPROTO_IPV6, |
| 71 | .owner = THIS_MODULE, |
Tomasz Bursztyka | eb31628 | 2013-10-10 13:39:19 +0200 | [diff] [blame] | 72 | .hook_mask = (1 << NF_INET_PRE_ROUTING) | |
| 73 | (1 << NF_INET_POST_ROUTING) | |
| 74 | (1 << NF_INET_LOCAL_OUT) | |
| 75 | (1 << NF_INET_LOCAL_IN), |
Patrick McHardy | fa2c1de | 2014-01-09 18:42:38 +0000 | [diff] [blame] | 76 | .hooks = { |
Pablo Neira Ayuso | 876665e | 2014-09-09 16:31:09 +0200 | [diff] [blame] | 77 | [NF_INET_PRE_ROUTING] = nft_nat_ipv6_in, |
| 78 | [NF_INET_POST_ROUTING] = nft_nat_ipv6_out, |
| 79 | [NF_INET_LOCAL_OUT] = nft_nat_ipv6_local_fn, |
Pablo Neira Ayuso | 2a5538e | 2014-08-25 12:05:27 +0200 | [diff] [blame] | 80 | [NF_INET_LOCAL_IN] = nft_nat_ipv6_fn, |
Tomasz Bursztyka | eb31628 | 2013-10-10 13:39:19 +0200 | [diff] [blame] | 81 | }, |
Tomasz Bursztyka | eb31628 | 2013-10-10 13:39:19 +0200 | [diff] [blame] | 82 | }; |
| 83 | |
| 84 | static int __init nft_chain_nat_ipv6_init(void) |
| 85 | { |
| 86 | int err; |
| 87 | |
| 88 | err = nft_register_chain_type(&nft_chain_nat_ipv6); |
| 89 | if (err < 0) |
| 90 | return err; |
| 91 | |
| 92 | return 0; |
| 93 | } |
| 94 | |
| 95 | static void __exit nft_chain_nat_ipv6_exit(void) |
| 96 | { |
| 97 | nft_unregister_chain_type(&nft_chain_nat_ipv6); |
| 98 | } |
| 99 | |
| 100 | module_init(nft_chain_nat_ipv6_init); |
| 101 | module_exit(nft_chain_nat_ipv6_exit); |
| 102 | |
| 103 | MODULE_LICENSE("GPL"); |
| 104 | MODULE_AUTHOR("Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>"); |
| 105 | MODULE_ALIAS_NFT_CHAIN(AF_INET6, "nat"); |