3 * (C) 2011 Intra2net AG <http://www.intra2net.com>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 (or any
7 * later at your option) as published by the Free Software Foundation.
9 #include <linux/module.h>
10 #include <linux/skbuff.h>
12 #include <linux/netfilter/x_tables.h>
13 #include <linux/netfilter/nfnetlink_acct.h>
14 #include <linux/netfilter/xt_nfacct.h>
17 MODULE_DESCRIPTION("Xtables: match for the extended accounting infrastructure");
18 MODULE_LICENSE("GPL");
19 MODULE_ALIAS("ipt_nfacct");
20 MODULE_ALIAS("ip6t_nfacct");
22 static bool nfacct_mt(const struct sk_buff *skb, struct xt_action_param *par)
24 const struct xt_nfacct_match_info *info = par->targinfo;
26 nfnl_acct_update(skb, info->nfacct);
32 nfacct_mt_checkentry(const struct xt_mtchk_param *par)
34 struct xt_nfacct_match_info *info = par->matchinfo;
35 struct nf_acct *nfacct;
37 nfacct = nfnl_acct_find_get(info->name);
39 pr_info("xt_nfacct: accounting object with name `%s' "
40 "does not exists\n", info->name);
43 info->nfacct = nfacct;
48 nfacct_mt_destroy(const struct xt_mtdtor_param *par)
50 const struct xt_nfacct_match_info *info = par->matchinfo;
52 nfnl_acct_put(info->nfacct);
55 static struct xt_match nfacct_mt_reg __read_mostly = {
57 .family = NFPROTO_UNSPEC,
58 .checkentry = nfacct_mt_checkentry,
60 .destroy = nfacct_mt_destroy,
61 .matchsize = sizeof(struct xt_nfacct_match_info),
65 static int __init nfacct_mt_init(void)
67 return xt_register_match(&nfacct_mt_reg);
70 static void __exit nfacct_mt_exit(void)
72 xt_unregister_match(&nfacct_mt_reg);
75 module_init(nfacct_mt_init);
76 module_exit(nfacct_mt_exit);