// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Implements a dummy match to allow attaching comments to rules
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*
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* 2003-05-13 Brad Fisher (brad@info-link.net)
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*/
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#include <linux/module.h>
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#include <linux/skbuff.h>
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#include <linux/netfilter/x_tables.h>
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#include <linux/netfilter/xt_comment.h>
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MODULE_AUTHOR("Brad Fisher <brad@info-link.net>");
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MODULE_DESCRIPTION("Xtables: No-op match which can be tagged with a comment");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("ipt_comment");
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MODULE_ALIAS("ip6t_comment");
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static bool
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comment_mt(const struct sk_buff *skb, struct xt_action_param *par)
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{
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/* We always match */
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return true;
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}
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static struct xt_match comment_mt_reg __read_mostly = {
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.name = "comment",
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.revision = 0,
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.family = NFPROTO_UNSPEC,
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.match = comment_mt,
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.matchsize = sizeof(struct xt_comment_info),
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.me = THIS_MODULE,
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};
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static int __init comment_mt_init(void)
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{
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return xt_register_match(&comment_mt_reg);
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}
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static void __exit comment_mt_exit(void)
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{
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xt_unregister_match(&comment_mt_reg);
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}
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module_init(comment_mt_init);
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module_exit(comment_mt_exit);
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