Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * Implements a dummy match to allow attaching comments to rules
3 *
4 * 2003-05-13 Brad Fisher (brad@info-link.net)
5 */
6
7#include <linux/module.h>
8#include <linux/skbuff.h>
9#include <linux/netfilter/x_tables.h>
10#include <linux/netfilter/xt_comment.h>
11
12MODULE_AUTHOR("Brad Fisher <brad@info-link.net>");
13MODULE_DESCRIPTION("Xtables: No-op match which can be tagged with a comment");
14MODULE_LICENSE("GPL");
15MODULE_ALIAS("ipt_comment");
16MODULE_ALIAS("ip6t_comment");
17
18static bool
19comment_mt(const struct sk_buff *skb, const struct net_device *in,
20 const struct net_device *out, const struct xt_match *match,
21 const void *matchinfo, int offset, unsigned int protooff,
22 bool *hotdrop)
23{
24 /* We always match */
25 return true;
26}
27
28static struct xt_match comment_mt_reg[] __read_mostly = {
29 {
30 .name = "comment",
31 .family = AF_INET,
32 .match = comment_mt,
33 .matchsize = sizeof(struct xt_comment_info),
34 .me = THIS_MODULE
35 },
36 {
37 .name = "comment",
38 .family = AF_INET6,
39 .match = comment_mt,
40 .matchsize = sizeof(struct xt_comment_info),
41 .me = THIS_MODULE
42 },
43};
44
45static int __init comment_mt_init(void)
46{
47 return xt_register_matches(comment_mt_reg, ARRAY_SIZE(comment_mt_reg));
48}
49
50static void __exit comment_mt_exit(void)
51{
52 xt_unregister_matches(comment_mt_reg, ARRAY_SIZE(comment_mt_reg));
53}
54
55module_init(comment_mt_init);
56module_exit(comment_mt_exit);