2 * Copyright (c) 2008 Patrick McHardy <kaber@trash.net>
3 * Copyright (c) 2012-2013 Pablo Neira Ayuso <pablo@netfilter.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * Development of this code funded by Astaro AG (http://www.astaro.com/)
12 #include <linux/init.h>
13 #include <linux/module.h>
14 #include <linux/ipv6.h>
15 #include <linux/netfilter_ipv6.h>
16 #include <net/netfilter/nf_tables.h>
17 #include <net/netfilter/nf_tables_ipv6.h>
19 static unsigned int nft_do_chain_ipv6(const struct nf_hook_ops *ops,
21 const struct net_device *in,
22 const struct net_device *out,
23 int (*okfn)(struct sk_buff *))
25 struct nft_pktinfo pkt;
27 /* malformed packet, drop it */
28 if (nft_set_pktinfo_ipv6(&pkt, ops, skb, in, out) < 0)
31 return nft_do_chain_pktinfo(&pkt, ops);
34 static unsigned int nft_ipv6_output(const struct nf_hook_ops *ops,
36 const struct net_device *in,
37 const struct net_device *out,
38 int (*okfn)(struct sk_buff *))
40 if (unlikely(skb->len < sizeof(struct ipv6hdr))) {
42 pr_info("nf_tables_ipv6: ignoring short SOCK_RAW "
47 return nft_do_chain_ipv6(ops, skb, in, out, okfn);
50 static struct nft_af_info nft_af_ipv6 __read_mostly = {
51 .family = NFPROTO_IPV6,
52 .nhooks = NF_INET_NUMHOOKS,
55 [NF_INET_LOCAL_IN] = nft_do_chain_ipv6,
56 [NF_INET_LOCAL_OUT] = nft_ipv6_output,
57 [NF_INET_FORWARD] = nft_do_chain_ipv6,
58 [NF_INET_PRE_ROUTING] = nft_do_chain_ipv6,
59 [NF_INET_POST_ROUTING] = nft_do_chain_ipv6,
63 static int nf_tables_ipv6_init_net(struct net *net)
65 net->nft.ipv6 = kmalloc(sizeof(struct nft_af_info), GFP_KERNEL);
66 if (net->nft.ipv6 == NULL)
69 memcpy(net->nft.ipv6, &nft_af_ipv6, sizeof(nft_af_ipv6));
71 if (nft_register_afinfo(net, net->nft.ipv6) < 0)
80 static void nf_tables_ipv6_exit_net(struct net *net)
82 nft_unregister_afinfo(net->nft.ipv6);
86 static struct pernet_operations nf_tables_ipv6_net_ops = {
87 .init = nf_tables_ipv6_init_net,
88 .exit = nf_tables_ipv6_exit_net,
91 static struct nf_chain_type filter_ipv6 = {
92 .family = NFPROTO_IPV6,
94 .type = NFT_CHAIN_T_DEFAULT,
95 .hook_mask = (1 << NF_INET_LOCAL_IN) |
96 (1 << NF_INET_LOCAL_OUT) |
97 (1 << NF_INET_FORWARD) |
98 (1 << NF_INET_PRE_ROUTING) |
99 (1 << NF_INET_POST_ROUTING),
102 static int __init nf_tables_ipv6_init(void)
104 nft_register_chain_type(&filter_ipv6);
105 return register_pernet_subsys(&nf_tables_ipv6_net_ops);
108 static void __exit nf_tables_ipv6_exit(void)
110 unregister_pernet_subsys(&nf_tables_ipv6_net_ops);
111 nft_unregister_chain_type(&filter_ipv6);
114 module_init(nf_tables_ipv6_init);
115 module_exit(nf_tables_ipv6_exit);
117 MODULE_LICENSE("GPL");
118 MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
119 MODULE_ALIAS_NFT_FAMILY(AF_INET6);