71 lines
1.4 KiB
C
71 lines
1.4 KiB
C
/*
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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("iptables comment match module");
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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 int
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match(const struct sk_buff *skb,
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const struct net_device *in,
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const struct net_device *out,
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const struct xt_match *match,
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const void *matchinfo,
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int offset,
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unsigned int protooff,
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int *hotdrop)
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{
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/* We always match */
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return 1;
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}
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static struct xt_match comment_match = {
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.name = "comment",
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.match = match,
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.matchsize = sizeof(struct xt_comment_info),
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.family = AF_INET,
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.me = THIS_MODULE
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};
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static struct xt_match comment6_match = {
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.name = "comment",
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.match = match,
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.matchsize = sizeof(struct xt_comment_info),
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.family = AF_INET6,
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.me = THIS_MODULE
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};
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static int __init xt_comment_init(void)
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{
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int ret;
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ret = xt_register_match(&comment_match);
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if (ret)
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return ret;
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ret = xt_register_match(&comment6_match);
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if (ret)
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xt_unregister_match(&comment_match);
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return ret;
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}
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static void __exit xt_comment_fini(void)
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{
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xt_unregister_match(&comment_match);
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xt_unregister_match(&comment6_match);
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}
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module_init(xt_comment_init);
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module_exit(xt_comment_fini);
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