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/* iptables module for using new netfilter netlink queue
*
* (C) 2005 by Harald Welte <laforge@netfilter.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/netfilter.h>
#include <linux/netfilter_arp.h>
#include <linux/netfilter/x_tables.h>
#include <linux/netfilter/xt_NFQUEUE.h>
MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>");
MODULE_DESCRIPTION("[ip,ip6,arp]_tables NFQUEUE target");
MODULE_LICENSE("GPL");
MODULE_ALIAS("ipt_NFQUEUE");
MODULE_ALIAS("ip6t_NFQUEUE");
MODULE_ALIAS("arpt_NFQUEUE");
static unsigned int
target(struct sk_buff **pskb,
const struct net_device *in,
const struct net_device *out,
unsigned int hooknum,
const void *targinfo,
void *userinfo)
{
const struct xt_NFQ_info *tinfo = targinfo;
return NF_QUEUE_NR(tinfo->queuenum);
}
static int
checkentry(const char *tablename,
const void *entry,
void *targinfo,
unsigned int targinfosize,
unsigned int hook_mask)
{
if (targinfosize != XT_ALIGN(sizeof(struct xt_NFQ_info))) {
printk(KERN_WARNING "NFQUEUE: targinfosize %u != %Zu\n",
targinfosize,
XT_ALIGN(sizeof(struct xt_NFQ_info)));
return 0;
}
return 1;
}
static struct xt_target ipt_NFQ_reg = {
.name = "NFQUEUE",
.target = target,
.checkentry = checkentry,
.me = THIS_MODULE,
};
static struct xt_target ip6t_NFQ_reg = {
.name = "NFQUEUE",
.target = target,
.checkentry = checkentry,
.me = THIS_MODULE,
};
static struct xt_target arpt_NFQ_reg = {
.name = "NFQUEUE",
.target = target,
.checkentry = checkentry,
.me = THIS_MODULE,
};
static int __init init(void)
{
int ret;
ret = xt_register_target(AF_INET, &ipt_NFQ_reg);
if (ret)
return ret;
ret = xt_register_target(AF_INET6, &ip6t_NFQ_reg);
if (ret)
goto out_ip;
ret = xt_register_target(NF_ARP, &arpt_NFQ_reg);
if (ret)
goto out_ip6;
return ret;
out_ip6:
xt_unregister_target(AF_INET6, &ip6t_NFQ_reg);
out_ip:
xt_unregister_target(AF_INET, &ipt_NFQ_reg);
return ret;
}
static void __exit fini(void)
{
xt_unregister_target(NF_ARP, &arpt_NFQ_reg);
xt_unregister_target(AF_INET6, &ip6t_NFQ_reg);
xt_unregister_target(AF_INET, &ipt_NFQ_reg);
}
module_init(init);
module_exit(fini);
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