From c57bfaecaedd30e36c746cf3d48c712eb54af53d Mon Sep 17 00:00:00 2001
From: Bart De Schuymer <bdschuym@pandora.be>
Date: Thu, 6 Jun 2002 16:56:40 +0000
Subject: *** empty log message ***

---
 kernel/linux/net/bridge/netfilter/ebt_dnat.c | 64 ++++++++++++++++++++++++++++
 kernel/linux/net/bridge/netfilter/ebt_snat.c | 64 ++++++++++++++++++++++++++++
 2 files changed, 128 insertions(+)
 create mode 100644 kernel/linux/net/bridge/netfilter/ebt_dnat.c
 create mode 100644 kernel/linux/net/bridge/netfilter/ebt_snat.c

(limited to 'kernel/linux/net')

diff --git a/kernel/linux/net/bridge/netfilter/ebt_dnat.c b/kernel/linux/net/bridge/netfilter/ebt_dnat.c
new file mode 100644
index 0000000..353b8c8
--- /dev/null
+++ b/kernel/linux/net/bridge/netfilter/ebt_dnat.c
@@ -0,0 +1,64 @@
+/*
+ *  ebt_dnat
+ *
+ *	Authors:
+ *	Bart De Schuymer <bart.de.schuymer@pandora.be>
+ *
+ *  June, 2002
+ *
+ */
+
+#include <linux/netfilter_bridge/ebtables.h>
+#include <linux/netfilter_bridge/ebt_nat.h>
+#include <linux/netfilter_bridge.h>
+#include <linux/skbuff.h>
+#include <linux/module.h>
+#include <net/sock.h>
+
+static __u8 ebt_target_dnat(struct sk_buff **pskb, unsigned int hooknr,
+   const struct net_device *in, const struct net_device *out,
+   const void *data, unsigned int datalen)
+{
+	struct ebt_nat_info *infostuff = (struct ebt_nat_info *) data;
+
+	memcpy(((**pskb).mac.ethernet)->h_dest, infostuff->mac,
+	   ETH_ALEN * sizeof(unsigned char));
+	return infostuff->target;
+}
+
+static int ebt_target_dnat_check(const char *tablename, unsigned int hooknr,
+   const struct ebt_entry *e, void *data, unsigned int datalen)
+{
+	struct ebt_nat_info *infostuff = (struct ebt_nat_info *) data;
+
+	if ( (strcmp(tablename, "nat") || 
+	   (hooknr != NF_BR_PRE_ROUTING && hooknr != NF_BR_LOCAL_OUT)) &&
+	   (strcmp(tablename, "broute") || hooknr != NF_BR_BROUTING) )
+		return -EINVAL;
+	if (datalen != sizeof(struct ebt_nat_info))
+		return -EINVAL;
+	if (infostuff->target >= NUM_STANDARD_TARGETS)
+		return -EINVAL;
+	return 0;
+}
+
+static struct ebt_target dnat =
+{
+	{NULL, NULL}, EBT_DNAT_TARGET, ebt_target_dnat, ebt_target_dnat_check,
+	NULL, THIS_MODULE
+};
+
+static int __init init(void)
+{
+	return ebt_register_target(&dnat);
+}
+
+static void __exit fini(void)
+{
+	ebt_unregister_target(&dnat);
+}
+
+module_init(init);
+module_exit(fini);
+EXPORT_NO_SYMBOLS;
+MODULE_LICENSE("GPL");
diff --git a/kernel/linux/net/bridge/netfilter/ebt_snat.c b/kernel/linux/net/bridge/netfilter/ebt_snat.c
new file mode 100644
index 0000000..cfe7e18
--- /dev/null
+++ b/kernel/linux/net/bridge/netfilter/ebt_snat.c
@@ -0,0 +1,64 @@
+/*
+ *  ebt_snat
+ *
+ *	Authors:
+ *	Bart De Schuymer <bart.de.schuymer@pandora.be>
+ *
+ *  June, 2002
+ *
+ */
+
+#include <linux/netfilter_bridge/ebtables.h>
+#include <linux/netfilter_bridge/ebt_nat.h>
+#include <linux/netfilter_bridge.h>
+#include <linux/skbuff.h>
+#include <linux/module.h>
+#include <net/sock.h>
+
+static __u8 ebt_target_snat(struct sk_buff **pskb, unsigned int hooknr,
+   const struct net_device *in, const struct net_device *out,
+   const void *data, unsigned int datalen)
+{
+	struct ebt_nat_info *infostuff = (struct ebt_nat_info *) data;
+
+	memcpy(((**pskb).mac.ethernet)->h_source, infostuff->mac,
+	   ETH_ALEN * sizeof(unsigned char));
+	return infostuff->target;
+}
+
+static int ebt_target_snat_check(const char *tablename, unsigned int hooknr,
+   const struct ebt_entry *e, void *data, unsigned int datalen)
+{
+	struct ebt_nat_info *infostuff = (struct ebt_nat_info *) data;
+
+	if (strcmp(tablename, "nat"))
+		return -EINVAL;
+	if (datalen != sizeof(struct ebt_nat_info))
+		return -EINVAL;
+	if (hooknr != NF_BR_POST_ROUTING)
+		return -EINVAL;
+	if (infostuff->target >= NUM_STANDARD_TARGETS)
+		return -EINVAL;
+	return 0;
+}
+
+static struct ebt_target snat =
+{
+	{NULL, NULL}, EBT_SNAT_TARGET, ebt_target_snat, ebt_target_snat_check,
+	NULL, THIS_MODULE
+};
+
+static int __init init(void)
+{
+	return ebt_register_target(&snat);
+}
+
+static void __exit fini(void)
+{
+	ebt_unregister_target(&snat);
+}
+
+module_init(init);
+module_exit(fini);
+EXPORT_NO_SYMBOLS;
+MODULE_LICENSE("GPL");
-- 
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