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root/net/netfilter/xt_comment.c

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DEFINITIONS

This source file includes following definitions.
  1. comment_mt
  2. comment_mt_init
  3. comment_mt_exit

/*
 * 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 xt_match_param *par)
{
        /* We always match */
        return true;
}

static struct xt_match comment_mt_reg __read_mostly = {
        .name      = "comment",
        .revision  = 0,
        .family    = NFPROTO_UNSPEC,
        .match     = comment_mt,
        .matchsize = sizeof(struct xt_comment_info),
        .me        = THIS_MODULE,
};

static int __init comment_mt_init(void)
{
        return xt_register_match(&comment_mt_reg);
}

static void __exit comment_mt_exit(void)
{
        xt_unregister_match(&comment_mt_reg);
}

module_init(comment_mt_init);
module_exit(comment_mt_exit);

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