/*
   * 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, struct xt_action_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);