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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
27static unsigned int nft_nat_do_chain(const struct nf_hook_ops *ops,
28 struct sk_buff *skb,
29 const struct nf_hook_state *state,
30 struct nf_conn *ct)
31{
32 struct nft_pktinfo pkt;
33
34 nft_set_pktinfo_ipv6(&pkt, ops, skb, state);
35
36 return nft_do_chain(&pkt, ops);
37}
38
39static unsigned int nft_nat_ipv6_fn(const struct nf_hook_ops *ops,
40 struct sk_buff *skb,
41 const struct nf_hook_state *state)
42{
43 return nf_nat_ipv6_fn(ops, skb, state, nft_nat_do_chain);
44}
45
46static unsigned int nft_nat_ipv6_in(const struct nf_hook_ops *ops,
47 struct sk_buff *skb,
48 const struct nf_hook_state *state)
49{
50 return nf_nat_ipv6_in(ops, skb, state, nft_nat_do_chain);
51}
52
53static unsigned int nft_nat_ipv6_out(const struct nf_hook_ops *ops,
54 struct sk_buff *skb,
55 const struct nf_hook_state *state)
56{
57 return nf_nat_ipv6_out(ops, skb, state, nft_nat_do_chain);
58}
59
60static unsigned int nft_nat_ipv6_local_fn(const struct nf_hook_ops *ops,
61 struct sk_buff *skb,
62 const struct nf_hook_state *state)
63{
64 return nf_nat_ipv6_local_fn(ops, skb, state, nft_nat_do_chain);
65}
66
67static const struct nf_chain_type nft_chain_nat_ipv6 = {
68 .name = "nat",
69 .type = NFT_CHAIN_T_NAT,
70 .family = NFPROTO_IPV6,
71 .owner = THIS_MODULE,
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),
76 .hooks = {
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,
80 [NF_INET_LOCAL_IN] = nft_nat_ipv6_fn,
81 },
82};
83
84static 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
95static void __exit nft_chain_nat_ipv6_exit(void)
96{
97 nft_unregister_chain_type(&nft_chain_nat_ipv6);
98}
99
100module_init(nft_chain_nat_ipv6_init);
101module_exit(nft_chain_nat_ipv6_exit);
102
103MODULE_LICENSE("GPL");
104MODULE_AUTHOR("Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>");
105MODULE_ALIAS_NFT_CHAIN(AF_INET6, "nat");
106