1 files changed, 84 insertions, 0 deletions
diff --git a/net/netfilter/xt_mark.c b/net/netfilter/xt_mark.c
new file mode 100644
index 00000000..23345238
--- /dev/null
+++ b/net/netfilter/xt_mark.c
@@ -0,0 +1,84 @@
+/*
+ *	xt_mark - Netfilter module to match NFMARK value
+ *
+ *	(C) 1999-2001 Marc Boucher <marc@mbsi.ca>
+ *	Copyright © CC Computer Consultants GmbH, 2007 - 2008
+ *	Jan Engelhardt <jengelh@medozas.de>
+ *
+ *	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/skbuff.h>
+
+#include <linux/netfilter/xt_mark.h>
+#include <linux/netfilter/x_tables.h>
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Marc Boucher <marc@mbsi.ca>");
+MODULE_DESCRIPTION("Xtables: packet mark operations");
+MODULE_ALIAS("ipt_mark");
+MODULE_ALIAS("ip6t_mark");
+MODULE_ALIAS("ipt_MARK");
+MODULE_ALIAS("ip6t_MARK");
+
+static unsigned int
+mark_tg(struct sk_buff *skb, const struct xt_action_param *par)
+{
+	const struct xt_mark_tginfo2 *info = par->targinfo;
+
+	skb->mark = (skb->mark & ~info->mask) ^ info->mark;
+	return XT_CONTINUE;
+}
+
+static bool
+mark_mt(const struct sk_buff *skb, struct xt_action_param *par)
+{
+	const struct xt_mark_mtinfo1 *info = par->matchinfo;
+
+	return ((skb->mark & info->mask) == info->mark) ^ info->invert;
+}
+
+static struct xt_target mark_tg_reg __read_mostly = {
+	.name           = "MARK",
+	.revision       = 2,
+	.family         = NFPROTO_UNSPEC,
+	.target         = mark_tg,
+	.targetsize     = sizeof(struct xt_mark_tginfo2),
+	.me             = THIS_MODULE,
+};
+
+static struct xt_match mark_mt_reg __read_mostly = {
+	.name           = "mark",
+	.revision       = 1,
+	.family         = NFPROTO_UNSPEC,
+	.match          = mark_mt,
+	.matchsize      = sizeof(struct xt_mark_mtinfo1),
+	.me             = THIS_MODULE,
+};
+
+static int __init mark_mt_init(void)
+{
+	int ret;
+
+	ret = xt_register_target(&mark_tg_reg);
+	if (ret < 0)
+		return ret;
+	ret = xt_register_match(&mark_mt_reg);
+	if (ret < 0) {
+		xt_unregister_target(&mark_tg_reg);
+		return ret;
+	}
+	return 0;
+}
+
+static void __exit mark_mt_exit(void)
+{
+	xt_unregister_match(&mark_mt_reg);
+	xt_unregister_target(&mark_tg_reg);
+}
+
+module_init(mark_mt_init);
+module_exit(mark_mt_exit);