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(void *priv,
21 const struct nf_hook_state *state)
23 struct nft_pktinfo pkt;
25 /* malformed packet, drop it */
26 if (nft_set_pktinfo_ipv6(&pkt, skb, state) < 0)
29 return nft_do_chain(&pkt, priv);
32 static unsigned int nft_ipv6_output(void *priv,
34 const struct nf_hook_state *state)
36 if (unlikely(skb->len < sizeof(struct ipv6hdr))) {
38 pr_info("nf_tables_ipv6: ignoring short SOCK_RAW "
43 return nft_do_chain_ipv6(priv, skb, state);
46 struct nft_af_info nft_af_ipv6 __read_mostly = {
47 .family = NFPROTO_IPV6,
48 .nhooks = NF_INET_NUMHOOKS,
52 [NF_INET_LOCAL_IN] = nft_do_chain_ipv6,
53 [NF_INET_LOCAL_OUT] = nft_ipv6_output,
54 [NF_INET_FORWARD] = nft_do_chain_ipv6,
55 [NF_INET_PRE_ROUTING] = nft_do_chain_ipv6,
56 [NF_INET_POST_ROUTING] = nft_do_chain_ipv6,
59 EXPORT_SYMBOL_GPL(nft_af_ipv6);
61 static int nf_tables_ipv6_init_net(struct net *net)
63 net->nft.ipv6 = kmalloc(sizeof(struct nft_af_info), GFP_KERNEL);
64 if (net->nft.ipv6 == NULL)
67 memcpy(net->nft.ipv6, &nft_af_ipv6, sizeof(nft_af_ipv6));
69 if (nft_register_afinfo(net, net->nft.ipv6) < 0)
78 static void nf_tables_ipv6_exit_net(struct net *net)
80 nft_unregister_afinfo(net->nft.ipv6);
84 static struct pernet_operations nf_tables_ipv6_net_ops = {
85 .init = nf_tables_ipv6_init_net,
86 .exit = nf_tables_ipv6_exit_net,
89 static const struct nf_chain_type filter_ipv6 = {
91 .type = NFT_CHAIN_T_DEFAULT,
92 .family = NFPROTO_IPV6,
94 .hook_mask = (1 << NF_INET_LOCAL_IN) |
95 (1 << NF_INET_LOCAL_OUT) |
96 (1 << NF_INET_FORWARD) |
97 (1 << NF_INET_PRE_ROUTING) |
98 (1 << NF_INET_POST_ROUTING),
101 static int __init nf_tables_ipv6_init(void)
105 nft_register_chain_type(&filter_ipv6);
106 ret = register_pernet_subsys(&nf_tables_ipv6_net_ops);
108 nft_unregister_chain_type(&filter_ipv6);
113 static void __exit nf_tables_ipv6_exit(void)
115 unregister_pernet_subsys(&nf_tables_ipv6_net_ops);
116 nft_unregister_chain_type(&filter_ipv6);
119 module_init(nf_tables_ipv6_init);
120 module_exit(nf_tables_ipv6_exit);
122 MODULE_LICENSE("GPL");
123 MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
124 MODULE_ALIAS_NFT_FAMILY(AF_INET6);