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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("Xtables: No-op match which can be tagged with a comment");
MODULE_LICENSE("GPL");
MODULE_ALIAS("ipt_comment");
MODULE_ALIAS("ip6t_comment");
static bool
comment_mt(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,
bool *hotdrop)
{
/* We always match */
return true;
}
static struct xt_match comment_mt_reg[] __read_mostly = {
{
.name = "comment",
.family = NFPROTO_IPV4,
.match = comment_mt,
.matchsize = sizeof(struct xt_comment_info),
.me = THIS_MODULE
},
{
.name = "comment",
.family = NFPROTO_IPV6,
.match = comment_mt,
.matchsize = sizeof(struct xt_comment_info),
.me = THIS_MODULE
},
};
static int __init comment_mt_init(void)
{
return xt_register_matches(comment_mt_reg, ARRAY_SIZE(comment_mt_reg));
}
static void __exit comment_mt_exit(void)
{
xt_unregister_matches(comment_mt_reg, ARRAY_SIZE(comment_mt_reg));
}
module_init(comment_mt_init);
module_exit(comment_mt_exit);
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