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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>
#define RAW_VALID_HOOKS ((1 << NF_IP6_PRE_ROUTING) | (1 << NF_IP6_LOCAL_OUT))
#if 0
#define DEBUGP(x, args...) printk(KERN_DEBUG x, ## args)
#else
#define DEBUGP(x, args...)
#endif
static struct
{
struct ip6t_replace repl;
struct ip6t_standard entries[2];
struct ip6t_error term;
} initial_table __initdata = {
.repl = {
.name = "raw",
.valid_hooks = RAW_VALID_HOOKS,
.num_entries = 3,
.size = sizeof(struct ip6t_standard) * 2 + sizeof(struct ip6t_error),
.hook_entry = {
[NF_IP6_PRE_ROUTING] = 0,
[NF_IP6_LOCAL_OUT] = sizeof(struct ip6t_standard)
},
.underflow = {
[NF_IP6_PRE_ROUTING] = 0,
[NF_IP6_LOCAL_OUT] = sizeof(struct ip6t_standard)
},
},
.entries = {
/* PRE_ROUTING */
{
.entry = {
.target_offset = sizeof(struct ip6t_entry),
.next_offset = sizeof(struct ip6t_standard),
},
.target = {
.target = {
.u = {
.target_size = IP6T_ALIGN(sizeof(struct ip6t_standard_target)),
},
},
.verdict = -NF_ACCEPT - 1,
},
},
/* LOCAL_OUT */
{
.entry = {
.target_offset = sizeof(struct ip6t_entry),
.next_offset = sizeof(struct ip6t_standard),
},
.target = {
.target = {
.u = {
.target_size = IP6T_ALIGN(sizeof(struct ip6t_standard_target)),
},
},
.verdict = -NF_ACCEPT - 1,
},
},
},
/* ERROR */
.term = {
.entry = {
.target_offset = sizeof(struct ip6t_entry),
.next_offset = sizeof(struct ip6t_error),
},
.target = {
.target = {
.u = {
.user = {
.target_size = IP6T_ALIGN(sizeof(struct ip6t_error_target)),
.name = IP6T_ERROR_TARGET,
},
},
},
.errorname = "ERROR",
},
}
};
static struct xt_table packet_raw = {
.name = "raw",
.valid_hooks = RAW_VALID_HOOKS,
.lock = RW_LOCK_UNLOCKED,
.me = THIS_MODULE,
.af = AF_INET6,
};
/* The work comes in here from netfilter.c. */
static unsigned int
ip6t_hook(unsigned int hook,
struct sk_buff **pskb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
return ip6t_do_table(pskb, hook, in, out, &packet_raw);
}
static struct nf_hook_ops ip6t_ops[] = {
{
.hook = ip6t_hook,
.pf = PF_INET6,
.hooknum = NF_IP6_PRE_ROUTING,
.priority = NF_IP6_PRI_FIRST,
.owner = THIS_MODULE,
},
{
.hook = ip6t_hook,
.pf = PF_INET6,
.hooknum = NF_IP6_LOCAL_OUT,
.priority = NF_IP6_PRI_FIRST,
.owner = THIS_MODULE,
},
};
static int __init ip6table_raw_init(void)
{
int ret;
/* Register table */
ret = ip6t_register_table(&packet_raw, &initial_table.repl);
if (ret < 0)
return ret;
/* Register hooks */
ret = nf_register_hooks(ip6t_ops, ARRAY_SIZE(ip6t_ops));
if (ret < 0)
goto cleanup_table;
return ret;
cleanup_table:
ip6t_unregister_table(&packet_raw);
return ret;
}
static void __exit ip6table_raw_fini(void)
{
nf_unregister_hooks(ip6t_ops, ARRAY_SIZE(ip6t_ops));
ip6t_unregister_table(&packet_raw);
}
module_init(ip6table_raw_init);
module_exit(ip6table_raw_fini);
MODULE_LICENSE("GPL");
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