From 8e4bff4cab0ddac6060645b0715210484d02ff40 Mon Sep 17 00:00:00 2001
From: Yuval Adam <_@yuv.al>
Date: Wed, 30 Aug 2017 08:25:59 +0000
Subject: Initial file dump from open source release

---
 net/netfilter/xt_NFLOG.c | 73 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 net/netfilter/xt_NFLOG.c

(limited to 'net/netfilter/xt_NFLOG.c')

diff --git a/net/netfilter/xt_NFLOG.c b/net/netfilter/xt_NFLOG.c
new file mode 100644
index 00000000..fb7497c9
--- /dev/null
+++ b/net/netfilter/xt_NFLOG.c
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2006 Patrick McHardy <kaber@trash.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/skbuff.h>
+
+#include <linux/netfilter/x_tables.h>
+#include <linux/netfilter/xt_NFLOG.h>
+#include <net/netfilter/nf_log.h>
+#include <net/netfilter/nfnetlink_log.h>
+
+MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
+MODULE_DESCRIPTION("Xtables: packet logging to netlink using NFLOG");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("ipt_NFLOG");
+MODULE_ALIAS("ip6t_NFLOG");
+
+static unsigned int
+nflog_tg(struct sk_buff *skb, const struct xt_action_param *par)
+{
+	const struct xt_nflog_info *info = par->targinfo;
+	struct nf_loginfo li;
+	struct net *net = dev_net(par->in ? par->in : par->out);
+
+	li.type		     = NF_LOG_TYPE_ULOG;
+	li.u.ulog.copy_len   = info->len;
+	li.u.ulog.group	     = info->group;
+	li.u.ulog.qthreshold = info->threshold;
+
+	nfulnl_log_packet(net, par->family, par->hooknum, skb, par->in,
+			  par->out, &li, info->prefix);
+	return XT_CONTINUE;
+}
+
+static int nflog_tg_check(const struct xt_tgchk_param *par)
+{
+	const struct xt_nflog_info *info = par->targinfo;
+
+	if (info->flags & ~XT_NFLOG_MASK)
+		return -EINVAL;
+	if (info->prefix[sizeof(info->prefix) - 1] != '\0')
+		return -EINVAL;
+	return 0;
+}
+
+static struct xt_target nflog_tg_reg __read_mostly = {
+	.name       = "NFLOG",
+	.revision   = 0,
+	.family     = NFPROTO_UNSPEC,
+	.checkentry = nflog_tg_check,
+	.target     = nflog_tg,
+	.targetsize = sizeof(struct xt_nflog_info),
+	.me         = THIS_MODULE,
+};
+
+static int __init nflog_tg_init(void)
+{
+	return xt_register_target(&nflog_tg_reg);
+}
+
+static void __exit nflog_tg_exit(void)
+{
+	xt_unregister_target(&nflog_tg_reg);
+}
+
+module_init(nflog_tg_init);
+module_exit(nflog_tg_exit);
-- 
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