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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647// SPDX-License-Identifier: GPL-2.0-only/* * 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 boolcomment_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);