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/*
* Implements a dummy match to allow attaching comments to rules
*
* 2003-05-13 Brad Fisher (brad@info-link.net)
*/
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/netfilter/x_tables.h>
#include <linux/netfilter/xt_comment.h>
MODULE_AUTHOR("Brad Fisher <brad@info-link.net>");
MODULE_DESCRIPTION("iptables comment match module");
MODULE_LICENSE("GPL");
MODULE_ALIAS("ipt_comment");
MODULE_ALIAS("ip6t_comment");
static int
match(const struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
const struct xt_match *match,
const void *matchinfo,
int offset,
unsigned int protooff,
int *hotdrop)
{
/* We always match */
return 1;
}
static struct xt_match comment_match = {
.name = "comment",
.match = match,
.matchsize = sizeof(struct xt_comment_info),
.me = THIS_MODULE
};
static struct xt_match comment6_match = {
.name = "comment",
.match = match,
.matchsize = sizeof(struct xt_comment_info),
.me = THIS_MODULE
};
static int __init init(void)
{
int ret;
ret = xt_register_match(AF_INET, &comment_match);
if (ret)
return ret;
ret = xt_register_match(AF_INET6, &comment6_match);
if (ret)
xt_unregister_match(AF_INET, &comment_match);
return ret;
}
static void __exit fini(void)
{
xt_unregister_match(AF_INET, &comment_match);
xt_unregister_match(AF_INET6, &comment6_match);
}
module_init(init);
module_exit(fini);
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