2 * Implements a dummy match to allow attaching comments to rules
4 * 2003-05-13 Brad Fisher (brad@info-link.net)
7 #include <linux/module.h>
8 #include <linux/skbuff.h>
9 #include <linux/netfilter/x_tables.h>
10 #include <linux/netfilter/xt_comment.h>
12 MODULE_AUTHOR("Brad Fisher <brad@info-link.net>");
13 MODULE_DESCRIPTION("iptables comment match module");
14 MODULE_LICENSE("GPL");
15 MODULE_ALIAS("ipt_comment");
16 MODULE_ALIAS("ip6t_comment");
19 match(const struct sk_buff *skb,
20 const struct net_device *in,
21 const struct net_device *out,
22 const void *matchinfo,
24 unsigned int protooff,
32 checkentry(const char *tablename,
35 unsigned int matchsize,
36 unsigned int hook_mask)
39 if (matchsize != XT_ALIGN(sizeof(struct xt_comment_info)))
44 static struct xt_match comment_match = {
47 .checkentry = checkentry,
51 static struct xt_match comment6_match = {
54 .checkentry = checkentry,
58 static int __init init(void)
62 ret = xt_register_match(AF_INET, &comment_match);
66 ret = xt_register_match(AF_INET6, &comment6_match);
68 xt_unregister_match(AF_INET, &comment_match);
73 static void __exit fini(void)
75 xt_unregister_match(AF_INET, &comment_match);
76 xt_unregister_match(AF_INET6, &comment6_match);