2 * Copyright (c) 2006 Patrick McHardy <kaber@trash.net>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
9 #include <linux/module.h>
10 #include <linux/init.h>
11 #include <linux/skbuff.h>
13 #include <linux/netfilter/x_tables.h>
14 #include <linux/netfilter/xt_NFLOG.h>
15 #include <net/netfilter/nf_log.h>
17 MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
18 MODULE_DESCRIPTION("Xtables: packet logging to netlink using NFLOG");
19 MODULE_LICENSE("GPL");
20 MODULE_ALIAS("ipt_NFLOG");
21 MODULE_ALIAS("ip6t_NFLOG");
24 nflog_tg(struct sk_buff *skb, const struct xt_target_param *par)
26 const struct xt_nflog_info *info = par->targinfo;
29 li.type = NF_LOG_TYPE_ULOG;
30 li.u.ulog.copy_len = info->len;
31 li.u.ulog.group = info->group;
32 li.u.ulog.qthreshold = info->threshold;
34 nf_log_packet(par->family, par->hooknum, skb, par->in,
35 par->out, &li, "%s", info->prefix);
39 static bool nflog_tg_check(const struct xt_tgchk_param *par)
41 const struct xt_nflog_info *info = par->targinfo;
43 if (info->flags & ~XT_NFLOG_MASK)
45 if (info->prefix[sizeof(info->prefix) - 1] != '\0')
50 static struct xt_target nflog_tg_reg __read_mostly = {
53 .family = NFPROTO_UNSPEC,
54 .checkentry = nflog_tg_check,
56 .targetsize = sizeof(struct xt_nflog_info),
60 static int __init nflog_tg_init(void)
62 return xt_register_target(&nflog_tg_reg);
65 static void __exit nflog_tg_exit(void)
67 xt_unregister_target(&nflog_tg_reg);
70 module_init(nflog_tg_init);
71 module_exit(nflog_tg_exit);