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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 int __net_init ip6table_raw_table_init(struct net *net);
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,
.table_init = ip6table_raw_table_init,
};
/* 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_table_init(struct net *net)
{
struct ip6t_replace *repl;
int ret;
if (net->ipv6.ip6table_raw)
return 0;
repl = ip6t_alloc_initial_table(&packet_raw);
if (repl == NULL)
return -ENOMEM;
ret = ip6t_register_table(net, &packet_raw, repl, rawtable_ops,
&net->ipv6.ip6table_raw);
kfree(repl);
return ret;
}
static void __net_exit ip6table_raw_net_exit(struct net *net)
{
if (!net->ipv6.ip6table_raw)
return;
ip6t_unregister_table(net, net->ipv6.ip6table_raw, rawtable_ops);
net->ipv6.ip6table_raw = NULL;
}
static struct pernet_operations ip6table_raw_net_ops = {
.exit = ip6table_raw_net_exit,
};
static int __init ip6table_raw_init(void)
{
int ret;
/* Register hooks */
rawtable_ops = xt_hook_ops_alloc(&packet_raw, ip6table_raw_hook);
if (IS_ERR(rawtable_ops))
return PTR_ERR(rawtable_ops);
ret = register_pernet_subsys(&ip6table_raw_net_ops);
if (ret < 0) {
kfree(rawtable_ops);
return ret;
}
ret = ip6table_raw_table_init(&init_net);
if (ret) {
unregister_pernet_subsys(&ip6table_raw_net_ops);
kfree(rawtable_ops);
}
return ret;
}
static void __exit ip6table_raw_fini(void)
{
unregister_pernet_subsys(&ip6table_raw_net_ops);
kfree(rawtable_ops);
}
module_init(ip6table_raw_init);
module_exit(ip6table_raw_fini);
MODULE_LICENSE("GPL");
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