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- /*
- * IPv6 raw table, a port of the IPv4 raw table to IPv6
- *
- * Copyright (C) 2003 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
- */
- #include <linux/module.h>
- #include <linux/netfilter_ipv6/ip6_tables.h>
- #include <linux/slab.h>
- #define RAW_VALID_HOOKS ((1 << NF_INET_PRE_ROUTING) | (1 << NF_INET_LOCAL_OUT))
- static const struct xt_table packet_raw = {
- .name = "raw",
- .valid_hooks = RAW_VALID_HOOKS,
- .me = THIS_MODULE,
- .af = NFPROTO_IPV6,
- .priority = NF_IP6_PRI_RAW,
- };
- /* The work comes in here from netfilter.c. */
- static unsigned int
- ip6table_raw_hook(void *priv, struct sk_buff *skb,
- const struct nf_hook_state *state)
- {
- return ip6t_do_table(skb, state, state->net->ipv6.ip6table_raw);
- }
- static struct nf_hook_ops *rawtable_ops __read_mostly;
- static int __net_init ip6table_raw_net_init(struct net *net)
- {
- struct ip6t_replace *repl;
- repl = ip6t_alloc_initial_table(&packet_raw);
- if (repl == NULL)
- return -ENOMEM;
- net->ipv6.ip6table_raw =
- ip6t_register_table(net, &packet_raw, repl);
- kfree(repl);
- return PTR_ERR_OR_ZERO(net->ipv6.ip6table_raw);
- }
- static void __net_exit ip6table_raw_net_exit(struct net *net)
- {
- ip6t_unregister_table(net, net->ipv6.ip6table_raw);
- }
- static struct pernet_operations ip6table_raw_net_ops = {
- .init = ip6table_raw_net_init,
- .exit = ip6table_raw_net_exit,
- };
- static int __init ip6table_raw_init(void)
- {
- int ret;
- ret = register_pernet_subsys(&ip6table_raw_net_ops);
- if (ret < 0)
- return ret;
- /* Register hooks */
- rawtable_ops = xt_hook_link(&packet_raw, ip6table_raw_hook);
- if (IS_ERR(rawtable_ops)) {
- ret = PTR_ERR(rawtable_ops);
- goto cleanup_table;
- }
- return ret;
- cleanup_table:
- unregister_pernet_subsys(&ip6table_raw_net_ops);
- return ret;
- }
- static void __exit ip6table_raw_fini(void)
- {
- xt_hook_unlink(&packet_raw, rawtable_ops);
- unregister_pernet_subsys(&ip6table_raw_net_ops);
- }
- module_init(ip6table_raw_init);
- module_exit(ip6table_raw_fini);
- MODULE_LICENSE("GPL");
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