#
# Patch managed by http://www.mn-logistik.de/unsupported/pxa250/patcher
#

--- linux-2.4.20/net/bridge/br_private.h~140-ebtables-brnf-5	2005-01-07 02:52:47.206944000 -0500
+++ linux-2.4.20/net/bridge/br_private.h	2005-01-07 02:57:30.880819576 -0500
@@ -145,8 +145,10 @@
 /* br_forward.c */
 extern void br_deliver(struct net_bridge_port *to,
 		struct sk_buff *skb);
+extern int br_dev_queue_push_xmit(struct sk_buff *skb);
 extern void br_forward(struct net_bridge_port *to,
 		struct sk_buff *skb);
+extern int br_forward_finish(struct sk_buff *skb);
 extern void br_flood_deliver(struct net_bridge *br,
 		      struct sk_buff *skb,
 		      int clone);
@@ -167,7 +169,8 @@
 			   int *ifindices);
 
 /* br_input.c */
-extern void br_handle_frame(struct sk_buff *skb);
+extern int br_handle_frame_finish(struct sk_buff *skb);
+extern int br_handle_frame(struct sk_buff *skb);
 
 /* br_ioctl.c */
 extern void br_call_ioctl_atomic(void (*fn)(void));
@@ -178,6 +181,10 @@
 	     unsigned long arg2);
 extern int br_ioctl_deviceless_stub(unsigned long arg);
 
+/* br_netfilter.c */
+extern int br_netfilter_init(void);
+extern void br_netfilter_fini(void);
+
 /* br_stp.c */
 extern int br_is_root_bridge(struct net_bridge *br);
 extern struct net_bridge_port *br_get_port(struct net_bridge *br,
--- linux-2.4.20/include/linux/if_bridge.h~140-ebtables-brnf-5	2001-11-22 14:47:12.000000000 -0500
+++ linux-2.4.20/include/linux/if_bridge.h	2005-01-07 02:57:30.880819576 -0500
@@ -102,7 +102,8 @@
 struct net_bridge_port;
 
 extern int (*br_ioctl_hook)(unsigned long arg);
-extern void (*br_handle_frame_hook)(struct sk_buff *skb);
+extern int (*br_handle_frame_hook)(struct sk_buff *skb);
+extern int (*br_should_route_hook)(struct sk_buff **pskb);
 
 #endif
 
--- linux-2.4.20/net/core/dev.c~140-ebtables-brnf-5	2005-01-07 02:52:47.208944000 -0500
+++ linux-2.4.20/net/core/dev.c	2005-01-07 02:57:30.882819272 -0500
@@ -1393,7 +1393,7 @@
 
 
 #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-void (*br_handle_frame_hook)(struct sk_buff *skb) = NULL;
+int (*br_handle_frame_hook)(struct sk_buff *skb) = NULL;
 #endif
 
 static __inline__ int handle_bridge(struct sk_buff *skb,
@@ -1410,7 +1410,6 @@
 		}
 	}
 
-	br_handle_frame_hook(skb);
 	return ret;
 }
 
@@ -1466,11 +1465,16 @@
 	if (skb->dev->divert && skb->dev->divert->divert)
 		ret = handle_diverter(skb);
 #endif /* CONFIG_NET_DIVERT */
-			
+
 #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
 	if (skb->dev->br_port != NULL &&
-	    br_handle_frame_hook != NULL) {
-		return handle_bridge(skb, pt_prev);
+        br_handle_frame_hook != NULL) {
+		int ret;
+
+		ret = handle_bridge(skb, pt_prev);
+		if (br_handle_frame_hook(skb) == 0)
+			return ret;
+		pt_prev = NULL;
 	}
 #endif
 
@@ -1866,7 +1870,7 @@
  *	are adjusted, %RTM_NEWLINK is sent to the routing socket and the
  *	function returns zero.
  */
- 
+
 int netdev_set_master(struct net_device *slave, struct net_device *master)
 {
 	struct net_device *old = slave->master;
--- linux-2.4.20/net/bridge/br_input.c~140-ebtables-brnf-5	2002-08-02 20:39:46.000000000 -0400
+++ linux-2.4.20/net/bridge/br_input.c	2005-01-07 02:57:30.882819272 -0500
@@ -24,6 +24,9 @@
 
 static int br_pass_frame_up_finish(struct sk_buff *skb)
 {
+#ifdef CONFIG_NETFILTER_DEBUG
+	skb->nf_debug = 0;
+#endif
 	netif_rx(skb);
 
 	return 0;
@@ -46,7 +49,7 @@
 			br_pass_frame_up_finish);
 }
 
-static int br_handle_frame_finish(struct sk_buff *skb)
+int br_handle_frame_finish(struct sk_buff *skb)
 {
 	struct net_bridge *br;
 	unsigned char *dest;
@@ -112,7 +115,7 @@
 	return 0;
 }
 
-void br_handle_frame(struct sk_buff *skb)
+int br_handle_frame(struct sk_buff *skb)
 {
 	struct net_bridge *br;
 	unsigned char *dest;
@@ -146,25 +149,35 @@
 		goto handle_special_frame;
 
 	if (p->state == BR_STATE_FORWARDING) {
+
+		if (br_should_route_hook && br_should_route_hook(&skb)) {
+			read_unlock(&br->lock);
+			return -1;
+		}
+
+		if (!memcmp(p->br->dev.dev_addr, dest, ETH_ALEN))
+			skb->pkt_type = PACKET_HOST;
+
 		NF_HOOK(PF_BRIDGE, NF_BR_PRE_ROUTING, skb, skb->dev, NULL,
 			br_handle_frame_finish);
 		read_unlock(&br->lock);
-		return;
+		return 0;
 	}
 
 err:
 	read_unlock(&br->lock);
 err_nolock:
 	kfree_skb(skb);
-	return;
+	return 0;
 
 handle_special_frame:
 	if (!dest[5]) {
 		br_stp_handle_bpdu(skb);
 		read_unlock(&br->lock);
-		return;
+		return 0;
 	}
 
 	read_unlock(&br->lock);
 	kfree_skb(skb);
+	return 0;
 }
--- linux-2.4.20/net/bridge/br_forward.c~140-ebtables-brnf-5	2002-08-02 20:39:46.000000000 -0400
+++ linux-2.4.20/net/bridge/br_forward.c	2005-01-07 02:57:30.883819120 -0500
@@ -30,18 +30,22 @@
 	return 1;
 }
 
-static int __dev_queue_push_xmit(struct sk_buff *skb)
+int br_dev_queue_push_xmit(struct sk_buff *skb)
 {
+#ifdef CONFIG_NETFILTER
+	if (skb->nf_bridge)
+		memcpy(skb->data - 16, skb->nf_bridge->hh, 16);
+#endif
 	skb_push(skb, ETH_HLEN);
 	dev_queue_xmit(skb);
 
 	return 0;
 }
 
-static int __br_forward_finish(struct sk_buff *skb)
+int br_forward_finish(struct sk_buff *skb)
 {
 	NF_HOOK(PF_BRIDGE, NF_BR_POST_ROUTING, skb, NULL, skb->dev,
-			__dev_queue_push_xmit);
+			br_dev_queue_push_xmit);
 
 	return 0;
 }
@@ -49,8 +53,11 @@
 static void __br_deliver(struct net_bridge_port *to, struct sk_buff *skb)
 {
 	skb->dev = to->dev;
+#ifdef CONFIG_NETFILTER_DEBUG
+	skb->nf_debug = 0;
+#endif
 	NF_HOOK(PF_BRIDGE, NF_BR_LOCAL_OUT, skb, NULL, skb->dev,
-			__br_forward_finish);
+			br_forward_finish);
 }
 
 static void __br_forward(struct net_bridge_port *to, struct sk_buff *skb)
@@ -61,7 +68,7 @@
 	skb->dev = to->dev;
 
 	NF_HOOK(PF_BRIDGE, NF_BR_FORWARD, skb, indev, skb->dev,
-			__br_forward_finish);
+			br_forward_finish);
 }
 
 /* called under bridge lock */
--- linux-2.4.20/net/bridge/br.c~140-ebtables-brnf-5	2002-11-28 18:53:15.000000000 -0500
+++ linux-2.4.20/net/bridge/br.c	2005-01-07 02:57:30.885818816 -0500
@@ -29,6 +29,8 @@
 #include "../atm/lec.h"
 #endif
 
+int (*br_should_route_hook) (struct sk_buff **pskb) = NULL;
+
 void br_dec_use_count()
 {
 	MOD_DEC_USE_COUNT;
@@ -43,6 +45,10 @@
 {
 	printk(KERN_INFO "NET4: Ethernet Bridge 008 for NET4.0\n");
 
+#ifdef CONFIG_NETFILTER
+	if (br_netfilter_init())
+		return 1;
+#endif
 	br_handle_frame_hook = br_handle_frame;
 	br_ioctl_hook = br_ioctl_deviceless_stub;
 #if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE)
@@ -61,6 +67,9 @@
 
 static void __exit br_deinit(void)
 {
+#ifdef CONFIG_NETFILTER
+	br_netfilter_fini();
+#endif
 	unregister_netdevice_notifier(&br_device_notifier);
 	br_call_ioctl_atomic(__br_clear_ioctl_hook);
 
@@ -74,7 +83,7 @@
 #endif
 }
 
-EXPORT_NO_SYMBOLS;
+EXPORT_SYMBOL(br_should_route_hook);
 
 module_init(br_init)
 module_exit(br_deinit)
--- linux-2.4.20/net/bridge/Makefile~140-ebtables-brnf-5	2000-12-29 17:07:24.000000000 -0500
+++ linux-2.4.20/net/bridge/Makefile	2005-01-07 02:57:30.885818816 -0500
@@ -7,10 +7,17 @@
 #
 # Note 2! The CFLAGS definition is now in the main makefile...
 
+export-objs := br.o
+
 O_TARGET	:= bridge.o
 obj-y		:= br.o br_device.o br_fdb.o br_forward.o br_if.o br_input.o \
 			br_ioctl.o br_notify.o br_stp.o br_stp_bpdu.o \
 			br_stp_if.o br_stp_timer.o
+
+ifeq ($(CONFIG_NETFILTER),y)
+obj-y		+= br_netfilter.o
+endif
+
 obj-m		:= $(O_TARGET)
 
 include $(TOPDIR)/Rules.make
--- linux-2.4.20/include/linux/netfilter_bridge.h~140-ebtables-brnf-5	2001-06-11 22:15:27.000000000 -0400
+++ linux-2.4.20/include/linux/netfilter_bridge.h	2005-01-07 02:57:30.885818816 -0500
@@ -1,11 +1,14 @@
 #ifndef __LINUX_BRIDGE_NETFILTER_H
 #define __LINUX_BRIDGE_NETFILTER_H
 
-/* bridge-specific defines for netfilter. 
+/* bridge-specific defines for netfilter.
  */
 
 #include <linux/config.h>
 #include <linux/netfilter.h>
+#if defined(__KERNEL__) && defined(CONFIG_NETFILTER)
+#include <asm/atomic.h>
+#endif
 
 /* Bridge Hooks */
 /* After promisc drops, checksum checks. */
@@ -18,7 +21,49 @@
 #define NF_BR_LOCAL_OUT		3
 /* Packets about to hit the wire. */
 #define NF_BR_POST_ROUTING	4
-#define NF_BR_NUMHOOKS		5
+/* Not really a hook, but used for the ebtables broute table */
+#define NF_BR_BROUTING		5
+#define NF_BR_NUMHOOKS		6
 
+#ifdef __KERNEL__
 
+#define BRNF_PKT_TYPE			0x01
+#define BRNF_BRIDGED_DNAT		0x02
+#define BRNF_DONT_TAKE_PARENT		0x04
+#define BRNF_BRIDGED			0x08
+
+enum nf_br_hook_priorities {
+	NF_BR_PRI_FIRST = INT_MIN,
+	NF_BR_PRI_NAT_DST_BRIDGED = -300,
+	NF_BR_PRI_FILTER_BRIDGED = -200,
+	NF_BR_PRI_BRNF = 0,
+	NF_BR_PRI_NAT_DST_OTHER = 100,
+	NF_BR_PRI_FILTER_OTHER = 200,
+	NF_BR_PRI_NAT_SRC = 300,
+	NF_BR_PRI_LAST = INT_MAX,
+};
+
+#ifdef CONFIG_NETFILTER
+static inline
+struct nf_bridge_info *nf_bridge_alloc(struct sk_buff *skb)
+{
+	struct nf_bridge_info **nf_bridge = &(skb->nf_bridge);
+
+	if ((*nf_bridge = kmalloc(sizeof(**nf_bridge), GFP_ATOMIC)) != NULL) {
+		atomic_set(&(*nf_bridge)->use, 1);
+		(*nf_bridge)->mask = 0;
+		(*nf_bridge)->physindev = (*nf_bridge)->physoutdev = NULL;
+	}
+
+	return *nf_bridge;
+}
+
+struct bridge_skb_cb {
+	union {
+		__u32 ipv4;
+	} daddr;
+};
+#endif /* CONFIG_NETFILTER */
+
+#endif /* __KERNEL__ */
 #endif
--- linux-2.4.20/net/Makefile~140-ebtables-brnf-5	2005-01-07 02:55:48.037454000 -0500
+++ linux-2.4.20/net/Makefile	2005-01-07 02:57:30.886818664 -0500
@@ -7,7 +7,8 @@
 
 O_TARGET :=	network.o
 
-mod-subdirs :=	ipv4/netfilter ipv6/netfilter ipx irda bluetooth atm netlink sched core
+mod-subdirs :=	ipv4/netfilter ipv6/netfilter bridge/netfilter ipx irda \
+	bluetooth atm netlink sched core
 export-objs :=	netsyms.o
 
 subdir-y :=	core ethernet
@@ -26,6 +27,12 @@
 endif
 endif
 
+ifneq ($(CONFIG_BRIDGE),n)
+ifneq ($(CONFIG_BRIDGE),)
+subdir-$(CONFIG_BRIDGE)		+= bridge/netfilter
+endif
+endif
+
 subdir-$(CONFIG_KHTTPD)		+= khttpd
 subdir-$(CONFIG_PACKET)		+= packet
 subdir-$(CONFIG_NET_SCHED)	+= sched
--- linux-2.4.20/net/Config.in~140-ebtables-brnf-5	2005-01-07 02:55:48.037454000 -0500
+++ linux-2.4.20/net/Config.in	2005-01-07 02:57:30.886818664 -0500
@@ -68,6 +68,9 @@
    source net/decnet/Config.in
 fi
 dep_tristate '802.1d Ethernet Bridging' CONFIG_BRIDGE $CONFIG_INET
+if [ "$CONFIG_BRIDGE" != "n" -a "$CONFIG_NETFILTER" != "n" ]; then
+   source net/bridge/netfilter/Config.in
+fi
 if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
    tristate 'CCITT X.25 Packet Layer (EXPERIMENTAL)' CONFIG_X25
    tristate 'LAPB Data Link Driver (EXPERIMENTAL)' CONFIG_LAPB
--- /dev/null	2004-04-06 13:56:48.000000000 -0400
+++ linux-2.4.20/net/bridge/netfilter/Makefile	2005-01-07 02:57:30.886818664 -0500
@@ -0,0 +1,30 @@
+#
+# Makefile for the netfilter modules on top of bridging.
+#
+# Note! Dependencies are done automagically by 'make dep', which also
+# removes any old dependencies. DON'T put your own dependencies here
+# unless it's something special (ie not a .c file).
+#
+# Note 2! The CFLAGS definition is now in the main makefile...
+
+O_TARGET	:= netfilter.o
+
+export-objs := ebtables.o
+
+obj-$(CONFIG_BRIDGE_NF_EBTABLES) += ebtables.o
+obj-$(CONFIG_BRIDGE_EBT_T_FILTER) += ebtable_filter.o
+obj-$(CONFIG_BRIDGE_EBT_T_NAT) += ebtable_nat.o
+obj-$(CONFIG_BRIDGE_EBT_BROUTE) += ebtable_broute.o
+obj-$(CONFIG_BRIDGE_EBT_IPF) += ebt_ip.o
+obj-$(CONFIG_BRIDGE_EBT_ARPF) += ebt_arp.o
+obj-$(CONFIG_BRIDGE_EBT_VLANF) += ebt_vlan.o
+obj-$(CONFIG_BRIDGE_EBT_MARKF) += ebt_mark_m.o
+obj-$(CONFIG_BRIDGE_EBT_802_3) += ebt_802_3.o
+obj-$(CONFIG_BRIDGE_EBT_PKTTYPE) += ebt_pkttype.o
+obj-$(CONFIG_BRIDGE_EBT_PKTTYPE) += ebt_stp.o
+obj-$(CONFIG_BRIDGE_EBT_LOG) += ebt_log.o
+obj-$(CONFIG_BRIDGE_EBT_SNAT) += ebt_snat.o
+obj-$(CONFIG_BRIDGE_EBT_DNAT) += ebt_dnat.o
+obj-$(CONFIG_BRIDGE_EBT_REDIRECT) += ebt_redirect.o
+obj-$(CONFIG_BRIDGE_EBT_MARK_T) += ebt_mark.o
+include $(TOPDIR)/Rules.make
--- /dev/null	2004-04-06 13:56:48.000000000 -0400
+++ linux-2.4.20/net/bridge/netfilter/Config.in	2005-01-07 02:57:30.886818664 -0500
@@ -0,0 +1,19 @@
+#
+# Bridge netfilter configuration
+#
+dep_tristate '  Bridge: ebtables' CONFIG_BRIDGE_NF_EBTABLES $CONFIG_BRIDGE
+dep_tristate '    ebt: filter table support' CONFIG_BRIDGE_EBT_T_FILTER $CONFIG_BRIDGE_NF_EBTABLES
+dep_tristate '    ebt: nat table support' CONFIG_BRIDGE_EBT_T_NAT $CONFIG_BRIDGE_NF_EBTABLES
+dep_tristate '    ebt: broute table support' CONFIG_BRIDGE_EBT_BROUTE $CONFIG_BRIDGE_NF_EBTABLES
+dep_tristate '    ebt: log support' CONFIG_BRIDGE_EBT_LOG $CONFIG_BRIDGE_NF_EBTABLES
+dep_tristate '    ebt: IP filter support' CONFIG_BRIDGE_EBT_IPF $CONFIG_BRIDGE_NF_EBTABLES
+dep_tristate '    ebt: ARP filter support' CONFIG_BRIDGE_EBT_ARPF $CONFIG_BRIDGE_NF_EBTABLES
+dep_tristate '    ebt: 802.1Q VLAN filter support' CONFIG_BRIDGE_EBT_VLANF $CONFIG_BRIDGE_NF_EBTABLES
+dep_tristate '    ebt: 802.3 filter support' CONFIG_BRIDGE_EBT_802_3 $CONFIG_BRIDGE_NF_EBTABLES
+dep_tristate '    ebt: packet type filter support' CONFIG_BRIDGE_EBT_PKTTYPE $CONFIG_BRIDGE_NF_EBTABLES
+dep_tristate '    ebt: STP filter support' CONFIG_BRIDGE_EBT_STP $CONFIG_BRIDGE_NF_EBTABLES
+dep_tristate '    ebt: mark filter support' CONFIG_BRIDGE_EBT_MARKF $CONFIG_BRIDGE_NF_EBTABLES
+dep_tristate '    ebt: snat target support' CONFIG_BRIDGE_EBT_SNAT $CONFIG_BRIDGE_NF_EBTABLES
+dep_tristate '    ebt: dnat target support' CONFIG_BRIDGE_EBT_DNAT $CONFIG_BRIDGE_NF_EBTABLES
+dep_tristate '    ebt: redirect target support' CONFIG_BRIDGE_EBT_REDIRECT $CONFIG_BRIDGE_NF_EBTABLES
+dep_tristate '    ebt: mark target support' CONFIG_BRIDGE_EBT_MARK_T $CONFIG_BRIDGE_NF_EBTABLES
--- /dev/null	2004-04-06 13:56:48.000000000 -0400
+++ linux-2.4.20/net/bridge/netfilter/ebtable_filter.c	2005-01-07 02:57:30.887818512 -0500
@@ -0,0 +1,90 @@
+/*
+ *  ebtable_filter
+ *
+ *	Authors:
+ *	Bart De Schuymer <bart.de.schuymer@pandora.be>
+ *
+ *  April, 2002
+ *
+ */
+
+#include <linux/netfilter_bridge/ebtables.h>
+#include <linux/module.h>
+
+#define FILTER_VALID_HOOKS ((1 << NF_BR_LOCAL_IN) | (1 << NF_BR_FORWARD) | \
+   (1 << NF_BR_LOCAL_OUT))
+
+static struct ebt_entries initial_chains[] =
+{
+  {0, "INPUT", 0, EBT_ACCEPT, 0},
+  {0, "FORWARD", 0, EBT_ACCEPT, 0},
+  {0, "OUTPUT", 0, EBT_ACCEPT, 0}
+};
+
+static struct ebt_replace initial_table =
+{
+  "filter", FILTER_VALID_HOOKS, 0, 3 * sizeof(struct ebt_entries),
+  { [NF_BR_LOCAL_IN]&initial_chains[0], [NF_BR_FORWARD]&initial_chains[1],
+    [NF_BR_LOCAL_OUT]&initial_chains[2] }, 0, NULL, (char *)initial_chains
+};
+
+static int check(const struct ebt_table_info *info, unsigned int valid_hooks)
+{
+	if (valid_hooks & ~FILTER_VALID_HOOKS)
+		return -EINVAL;
+	return 0;
+}
+
+static struct ebt_table frame_filter =
+{ 
+  {NULL, NULL}, "filter", &initial_table, FILTER_VALID_HOOKS, 
+  RW_LOCK_UNLOCKED, check, NULL
+};
+
+static unsigned int
+ebt_hook (unsigned int hook, struct sk_buff **pskb, const struct net_device *in,
+   const struct net_device *out, int (*okfn)(struct sk_buff *))
+{
+	return ebt_do_table(hook, pskb, in, out, &frame_filter);
+}
+
+static struct nf_hook_ops ebt_ops_filter[] = {
+	{ { NULL, NULL }, ebt_hook, PF_BRIDGE, NF_BR_LOCAL_IN,
+	   NF_BR_PRI_FILTER_BRIDGED},
+	{ { NULL, NULL }, ebt_hook, PF_BRIDGE, NF_BR_FORWARD,
+	   NF_BR_PRI_FILTER_BRIDGED},
+	{ { NULL, NULL }, ebt_hook, PF_BRIDGE, NF_BR_LOCAL_OUT,
+	   NF_BR_PRI_FILTER_OTHER}
+};
+
+static int __init init(void)
+{
+	int i, j, ret;
+
+	ret = ebt_register_table(&frame_filter);
+	if (ret < 0)
+		return ret;
+	for (i = 0; i < sizeof(ebt_ops_filter) / sizeof(ebt_ops_filter[0]); i++)
+		if ((ret = nf_register_hook(&ebt_ops_filter[i])) < 0)
+			goto cleanup;
+	return ret;
+cleanup:
+	for (j = 0; j < i; j++)
+		nf_unregister_hook(&ebt_ops_filter[j]);
+	ebt_unregister_table(&frame_filter);
+	return ret;
+}
+
+static void __exit fini(void)
+{
+	int i;
+
+	for (i = 0; i < sizeof(ebt_ops_filter) / sizeof(ebt_ops_filter[0]); i++)
+		nf_unregister_hook(&ebt_ops_filter[i]);
+	ebt_unregister_table(&frame_filter);
+}
+
+module_init(init);
+module_exit(fini);
+EXPORT_NO_SYMBOLS;
+MODULE_LICENSE("GPL");
--- /dev/null	2004-04-06 13:56:48.000000000 -0400
+++ linux-2.4.20/net/bridge/netfilter/ebtable_nat.c	2005-01-07 02:57:30.887818512 -0500
@@ -0,0 +1,96 @@
+/*
+ *  ebtable_nat
+ *
+ *	Authors:
+ *	Bart De Schuymer <bart.de.schuymer@pandora.be>
+ *
+ *  April, 2002
+ *
+ */
+
+#include <linux/netfilter_bridge/ebtables.h>
+#include <linux/module.h>
+#define NAT_VALID_HOOKS ((1 << NF_BR_PRE_ROUTING) | (1 << NF_BR_LOCAL_OUT) | \
+   (1 << NF_BR_POST_ROUTING))
+
+static struct ebt_entries initial_chains[] =
+{
+  {0, "PREROUTING", 0, EBT_ACCEPT, 0},
+  {0, "OUTPUT", 0, EBT_ACCEPT, 0},
+  {0, "POSTROUTING", 0, EBT_ACCEPT, 0}
+};
+
+static struct ebt_replace initial_table =
+{
+  "nat", NAT_VALID_HOOKS, 0, 3 * sizeof(struct ebt_entries),
+  { [NF_BR_PRE_ROUTING]&initial_chains[0], [NF_BR_LOCAL_OUT]&initial_chains[1],
+    [NF_BR_POST_ROUTING]&initial_chains[2] }, 0, NULL, (char *)initial_chains
+};
+
+static int check(const struct ebt_table_info *info, unsigned int valid_hooks)
+{
+	if (valid_hooks & ~NAT_VALID_HOOKS)
+		return -EINVAL;
+	return 0;
+}
+
+static struct ebt_table frame_nat =
+{
+  {NULL, NULL}, "nat", &initial_table, NAT_VALID_HOOKS,
+  RW_LOCK_UNLOCKED, check, NULL
+};
+
+static unsigned int
+ebt_nat_dst(unsigned int hook, struct sk_buff **pskb, const struct net_device *in
+   , const struct net_device *out, int (*okfn)(struct sk_buff *))
+{
+	return ebt_do_table(hook, pskb, in, out, &frame_nat);
+}
+
+static unsigned int
+ebt_nat_src(unsigned int hook, struct sk_buff **pskb, const struct net_device *in
+   , const struct net_device *out, int (*okfn)(struct sk_buff *))
+{
+	return ebt_do_table(hook, pskb, in, out, &frame_nat);
+}
+
+static struct nf_hook_ops ebt_ops_nat[] = {
+	{ { NULL, NULL }, ebt_nat_dst, PF_BRIDGE, NF_BR_LOCAL_OUT,
+	   NF_BR_PRI_NAT_DST_OTHER},
+	{ { NULL, NULL }, ebt_nat_src, PF_BRIDGE, NF_BR_POST_ROUTING,
+	   NF_BR_PRI_NAT_SRC},
+	{ { NULL, NULL }, ebt_nat_dst, PF_BRIDGE, NF_BR_PRE_ROUTING,
+	   NF_BR_PRI_NAT_DST_BRIDGED},
+};
+
+static int __init init(void)
+{
+	int i, ret, j;
+
+	ret = ebt_register_table(&frame_nat);
+	if (ret < 0)
+		return ret;
+	for (i = 0; i < sizeof(ebt_ops_nat) / sizeof(ebt_ops_nat[0]); i++)
+		if ((ret = nf_register_hook(&ebt_ops_nat[i])) < 0)
+			goto cleanup;
+	return ret;
+cleanup:
+	for (j = 0; j < i; j++)
+		nf_unregister_hook(&ebt_ops_nat[j]);
+	ebt_unregister_table(&frame_nat);
+	return ret;
+}
+
+static void __exit fini(void)
+{
+	int i;
+
+	for (i = 0; i < sizeof(ebt_ops_nat) / sizeof(ebt_ops_nat[0]); i++)
+		nf_unregister_hook(&ebt_ops_nat[i]);
+	ebt_unregister_table(&frame_nat);
+}
+
+module_init(init);
+module_exit(fini);
+EXPORT_NO_SYMBOLS;
+MODULE_LICENSE("GPL");
--- /dev/null	2004-04-06 13:56:48.000000000 -0400
+++ linux-2.4.20/net/bridge/netfilter/ebtable_broute.c	2005-01-07 02:57:30.887818512 -0500
@@ -0,0 +1,79 @@
+/*
+ *  ebtable_broute
+ *
+ *	Authors:
+ *	Bart De Schuymer <bart.de.schuymer@pandora.be>
+ *
+ *  April, 2002
+ *
+ *  This table lets you choose between routing and bridging for frames
+ *  entering on a bridge enslaved nic. This table is traversed before any
+ *  other ebtables table. See net/bridge/br_input.c.
+ */
+
+#include <linux/netfilter_bridge/ebtables.h>
+#include <linux/module.h>
+#include <linux/if_bridge.h>
+#include <linux/brlock.h>
+
+// EBT_ACCEPT means the frame will be bridged
+// EBT_DROP means the frame will be routed
+static struct ebt_entries initial_chain =
+  {0, "BROUTING", 0, EBT_ACCEPT, 0};
+
+static struct ebt_replace initial_table =
+{
+  "broute", 1 << NF_BR_BROUTING, 0, sizeof(struct ebt_entries),
+  { [NF_BR_BROUTING]&initial_chain}, 0, NULL, (char *)&initial_chain
+};
+
+static int check(const struct ebt_table_info *info, unsigned int valid_hooks)
+{
+	if (valid_hooks & ~(1 << NF_BR_BROUTING))
+		return -EINVAL;
+	return 0;
+}
+
+static struct ebt_table broute_table =
+{
+  {NULL, NULL}, "broute", &initial_table, 1 << NF_BR_BROUTING,
+  RW_LOCK_UNLOCKED, check, NULL
+};
+
+static int ebt_broute(struct sk_buff **pskb)
+{
+	int ret;
+
+	ret = ebt_do_table(NF_BR_BROUTING, pskb, (*pskb)->dev, NULL,
+	   &broute_table);
+	if (ret == NF_DROP)
+		return 1; // route it
+	return 0; // bridge it
+}
+
+static int __init init(void)
+{
+	int ret;
+
+	ret = ebt_register_table(&broute_table);
+	if (ret < 0)
+		return ret;
+	br_write_lock_bh(BR_NETPROTO_LOCK);
+	// see br_input.c
+	br_should_route_hook = ebt_broute;
+	br_write_unlock_bh(BR_NETPROTO_LOCK);
+	return ret;
+}
+
+static void __exit fini(void)
+{
+	br_write_lock_bh(BR_NETPROTO_LOCK);
+	br_should_route_hook = NULL;
+	br_write_unlock_bh(BR_NETPROTO_LOCK);
+	ebt_unregister_table(&broute_table);
+}
+
+module_init(init);
+module_exit(fini);
+EXPORT_NO_SYMBOLS;
+MODULE_LICENSE("GPL");
--- /dev/null	2004-04-06 13:56:48.000000000 -0400
+++ linux-2.4.20/net/bridge/netfilter/ebt_802_3.c	2005-01-07 02:57:30.888818360 -0500
@@ -0,0 +1,74 @@
+/*
+ * 802_3
+ *
+ * Author:
+ * Chris Vitale csv@bluetail.com
+ *
+ * May 2003
+ * 
+ */
+
+#include <linux/netfilter_bridge/ebtables.h>
+#include <linux/netfilter_bridge/ebt_802_3.h>
+#include <linux/module.h>
+
+static int ebt_filter_802_3(const struct sk_buff *skb, const struct net_device *in,
+   const struct net_device *out, const void *data, unsigned int datalen)
+{
+	struct ebt_802_3_info *info = (struct ebt_802_3_info *)data;
+	struct ebt_802_3_hdr *hdr = (struct ebt_802_3_hdr *)skb->mac.ethernet;
+	uint16_t type = hdr->llc.ui.ctrl & IS_UI ? hdr->llc.ui.type : hdr->llc.ni.type;
+
+	if (info->bitmask & EBT_802_3_SAP) {
+		if (FWINV(info->sap != hdr->llc.ui.ssap, EBT_802_3_SAP)) 
+				return EBT_NOMATCH;
+		if (FWINV(info->sap != hdr->llc.ui.dsap, EBT_802_3_SAP))
+				return EBT_NOMATCH;
+	}
+
+	if (info->bitmask & EBT_802_3_TYPE) {
+		if (!(hdr->llc.ui.dsap == CHECK_TYPE && hdr->llc.ui.ssap == CHECK_TYPE))
+			return EBT_NOMATCH;
+		if (FWINV(info->type != type, EBT_802_3_TYPE)) 
+			return EBT_NOMATCH;
+	}
+
+	return EBT_MATCH;
+}
+
+static struct ebt_match filter_802_3;
+static int ebt_802_3_check(const char *tablename, unsigned int hookmask,
+   const struct ebt_entry *e, void *data, unsigned int datalen)
+{
+	struct ebt_802_3_info *info = (struct ebt_802_3_info *)data;
+
+	if (datalen != EBT_ALIGN(sizeof(struct ebt_802_3_info)))
+		return -EINVAL;
+	if (info->bitmask & ~EBT_802_3_MASK || info->invflags & ~EBT_802_3_MASK)
+		return -EINVAL;
+
+	return 0;
+}
+
+static struct ebt_match filter_802_3 =
+{
+	.name		= EBT_802_3_MATCH,
+	.match		= ebt_filter_802_3,
+	.check		= ebt_802_3_check,
+	.me		= THIS_MODULE,
+};
+
+static int __init init(void)
+{
+	return ebt_register_match(&filter_802_3);
+}
+
+static void __exit fini(void)
+{
+	ebt_unregister_match(&filter_802_3);
+}
+
+module_init(init);
+module_exit(fini);
+EXPORT_NO_SYMBOLS;
+MODULE_LICENSE("GPL");
--- /dev/null	2004-04-06 13:56:48.000000000 -0400
+++ linux-2.4.20/net/bridge/netfilter/ebt_mark.c	2005-01-07 02:57:30.888818360 -0500
@@ -0,0 +1,66 @@
+/*
+ *  ebt_mark
+ *
+ *	Authors:
+ *	Bart De Schuymer <bart.de.schuymer@pandora.be>
+ *
+ *  July, 2002
+ *
+ */
+
+// The mark target can be used in any chain
+// I believe adding a mangle table just for marking is total overkill
+// Marking a frame doesn't really change anything in the frame anyway
+
+#include <linux/netfilter_bridge/ebtables.h>
+#include <linux/netfilter_bridge/ebt_mark_t.h>
+#include <linux/module.h>
+
+static int ebt_target_mark(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_mark_t_info *info = (struct ebt_mark_t_info *)data;
+
+	if ((*pskb)->nfmark != info->mark) {
+		(*pskb)->nfmark = info->mark;
+		(*pskb)->nfcache |= NFC_ALTERED;
+	}
+	return info->target;
+}
+
+static int ebt_target_mark_check(const char *tablename, unsigned int hookmask,
+   const struct ebt_entry *e, void *data, unsigned int datalen)
+{
+	struct ebt_mark_t_info *info = (struct ebt_mark_t_info *)data;
+
+	if (datalen != EBT_ALIGN(sizeof(struct ebt_mark_t_info)))
+		return -EINVAL;
+	if (BASE_CHAIN && info->target == EBT_RETURN)
+		return -EINVAL;
+	CLEAR_BASE_CHAIN_BIT;
+	if (INVALID_TARGET)
+		return -EINVAL;
+	return 0;
+}
+
+static struct ebt_target mark_target =
+{
+	{NULL, NULL}, EBT_MARK_TARGET, ebt_target_mark,
+	ebt_target_mark_check, NULL, THIS_MODULE
+};
+
+static int __init init(void)
+{
+	return ebt_register_target(&mark_target);
+}
+
+static void __exit fini(void)
+{
+	ebt_unregister_target(&mark_target);
+}
+
+module_init(init);
+module_exit(fini);
+EXPORT_NO_SYMBOLS;
+MODULE_LICENSE("GPL");
--- /dev/null	2004-04-06 13:56:48.000000000 -0400
+++ linux-2.4.20/net/bridge/netfilter/ebt_mark_m.c	2005-01-07 02:57:30.888818360 -0500
@@ -0,0 +1,61 @@
+/*
+ *  ebt_mark_m
+ *
+ *	Authors:
+ *	Bart De Schuymer <bart.de.schuymer@pandora.be>
+ *
+ *  July, 2002
+ *
+ */
+
+#include <linux/netfilter_bridge/ebtables.h>
+#include <linux/netfilter_bridge/ebt_mark_m.h>
+#include <linux/module.h>
+
+static int ebt_filter_mark(const struct sk_buff *skb,
+   const struct net_device *in, const struct net_device *out, const void *data,
+   unsigned int datalen)
+{
+	struct ebt_mark_m_info *info = (struct ebt_mark_m_info *) data;
+
+	if (info->bitmask & EBT_MARK_OR)
+		return !(!!(skb->nfmark & info->mask) ^ info->invert);
+	return !(((skb->nfmark & info->mask) == info->mark) ^ info->invert);
+}
+
+static int ebt_mark_check(const char *tablename, unsigned int hookmask,
+   const struct ebt_entry *e, void *data, unsigned int datalen)
+{
+        struct ebt_mark_m_info *info = (struct ebt_mark_m_info *) data;
+
+	if (datalen != EBT_ALIGN(sizeof(struct ebt_mark_m_info)))
+		return -EINVAL;
+	if (info->bitmask & ~EBT_MARK_MASK)
+		return -EINVAL;
+	if ((info->bitmask & EBT_MARK_OR) && (info->bitmask & EBT_MARK_AND))
+		return -EINVAL;
+	if (!info->bitmask)
+		return -EINVAL;
+	return 0;
+}
+
+static struct ebt_match filter_mark =
+{
+	{NULL, NULL}, EBT_MARK_MATCH, ebt_filter_mark, ebt_mark_check, NULL,
+	THIS_MODULE
+};
+
+static int __init init(void)
+{
+	return ebt_register_match(&filter_mark);
+}
+
+static void __exit fini(void)
+{
+	ebt_unregister_match(&filter_mark);
+}
+
+module_init(init);
+module_exit(fini);
+EXPORT_NO_SYMBOLS;
+MODULE_LICENSE("GPL");
--- /dev/null	2004-04-06 13:56:48.000000000 -0400
+++ linux-2.4.20/net/bridge/netfilter/ebt_pkttype.c	2005-01-07 02:57:30.888818360 -0500
@@ -0,0 +1,60 @@
+/*
+ *  ebt_pkttype
+ *
+ *	Authors:
+ *	Bart De Schuymer <bdschuym@pandora.be>
+ *
+ *  April, 2003
+ *
+ */
+
+#include <linux/netfilter_bridge/ebtables.h>
+#include <linux/netfilter_bridge/ebt_pkttype.h>
+#include <linux/module.h>
+
+static int ebt_filter_pkttype(const struct sk_buff *skb,
+   const struct net_device *in,
+   const struct net_device *out,
+   const void *data,
+   unsigned int datalen)
+{
+	struct ebt_pkttype_info *info = (struct ebt_pkttype_info *)data;
+
+	return (skb->pkt_type != info->pkt_type) ^ info->invert;
+}
+
+static int ebt_pkttype_check(const char *tablename, unsigned int hookmask,
+   const struct ebt_entry *e, void *data, unsigned int datalen)
+{
+	struct ebt_pkttype_info *info = (struct ebt_pkttype_info *)data;
+
+	if (datalen != EBT_ALIGN(sizeof(struct ebt_pkttype_info)))
+		return -EINVAL;
+	if (info->invert != 0 && info->invert != 1)
+		return -EINVAL;
+	/* Allow any pkt_type value */
+	return 0;
+}
+
+static struct ebt_match filter_pkttype =
+{
+	.name		= EBT_PKTTYPE_MATCH,
+	.match		= ebt_filter_pkttype,
+	.check		= ebt_pkttype_check,
+	.me		= THIS_MODULE,
+};
+
+static int __init init(void)
+{
+	return ebt_register_match(&filter_pkttype);
+}
+
+static void __exit fini(void)
+{
+	ebt_unregister_match(&filter_pkttype);
+}
+
+module_init(init);
+module_exit(fini);
+EXPORT_NO_SYMBOLS;
+MODULE_LICENSE("GPL");
--- /dev/null	2004-04-06 13:56:48.000000000 -0400
+++ linux-2.4.20/net/bridge/netfilter/ebt_stp.c	2005-01-07 02:57:30.889818208 -0500
@@ -0,0 +1,191 @@
+/*
+ *  ebt_stp
+ *
+ *	Authors:
+ *	Bart De Schuymer <bdschuym@pandora.be>
+ *	Stephen Hemminger <shemminger@osdl.org>
+ *
+ *  June, 2003
+ */
+
+#include <linux/netfilter_bridge/ebtables.h>
+#include <linux/netfilter_bridge/ebt_stp.h>
+#include <linux/module.h>
+
+#define BPDU_TYPE_CONFIG 0
+#define BPDU_TYPE_TCN 0x80
+
+struct stp_header {
+	uint8_t dsap;
+	uint8_t ssap;
+	uint8_t ctrl;
+	uint8_t pid;
+	uint8_t vers;
+	uint8_t type;
+};
+
+struct stp_config_pdu {
+	uint8_t flags;
+	uint8_t root[8];
+	uint8_t root_cost[4];
+	uint8_t sender[8];
+	uint8_t port[2];
+	uint8_t msg_age[2];
+	uint8_t max_age[2];
+	uint8_t hello_time[2];
+	uint8_t forward_delay[2];
+};
+
+#define NR16(p) (p[0] << 8 | p[1])
+#define NR32(p) ((p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3])
+
+static int ebt_filter_config(struct ebt_stp_info *info,
+   struct stp_config_pdu *stpc)
+{
+	struct ebt_stp_config_info *c;
+	uint16_t v16;
+	uint32_t v32;
+	int verdict, i;
+
+	c = &info->config;
+	if ((info->bitmask & EBT_STP_FLAGS) &&
+	    FWINV(c->flags != stpc->flags, EBT_STP_FLAGS))
+		return EBT_NOMATCH;
+	if (info->bitmask & EBT_STP_ROOTPRIO) {
+		v16 = NR16(stpc->root);
+		if (FWINV(v16 < c->root_priol ||
+		    v16 > c->root_priou, EBT_STP_ROOTPRIO))
+			return EBT_NOMATCH;
+	}
+	if (info->bitmask & EBT_STP_ROOTADDR) {
+		verdict = 0;
+		for (i = 0; i < 6; i++)
+			verdict |= (stpc->root[2+i] ^ c->root_addr[i]) &
+			           c->root_addrmsk[i];
+		if (FWINV(verdict != 0, EBT_STP_ROOTADDR))
+			return EBT_NOMATCH;
+	}
+	if (info->bitmask & EBT_STP_ROOTCOST) {
+		v32 = NR32(stpc->root_cost);
+		if (FWINV(v32 < c->root_costl ||
+		    v32 > c->root_costu, EBT_STP_ROOTCOST))
+			return EBT_NOMATCH;
+	}
+	if (info->bitmask & EBT_STP_SENDERPRIO) {
+		v16 = NR16(stpc->sender);
+		if (FWINV(v16 < c->sender_priol ||
+		    v16 > c->sender_priou, EBT_STP_SENDERPRIO))
+			return EBT_NOMATCH;
+	}
+	if (info->bitmask & EBT_STP_SENDERADDR) {
+		verdict = 0;
+		for (i = 0; i < 6; i++)
+			verdict |= (stpc->sender[2+i] ^ c->sender_addr[i]) &
+			           c->sender_addrmsk[i];
+		if (FWINV(verdict != 0, EBT_STP_SENDERADDR))
+			return EBT_NOMATCH;
+	}
+	if (info->bitmask & EBT_STP_PORT) {
+		v16 = NR16(stpc->port);
+		if (FWINV(v16 < c->portl ||
+		    v16 > c->portu, EBT_STP_PORT))
+			return EBT_NOMATCH;
+	}
+	if (info->bitmask & EBT_STP_MSGAGE) {
+		v16 = NR16(stpc->msg_age);
+		if (FWINV(v16 < c->msg_agel ||
+		    v16 > c->msg_ageu, EBT_STP_MSGAGE))
+			return EBT_NOMATCH;
+	}
+	if (info->bitmask & EBT_STP_MAXAGE) {
+		v16 = NR16(stpc->max_age);
+		if (FWINV(v16 < c->max_agel ||
+		    v16 > c->max_ageu, EBT_STP_MAXAGE))
+			return EBT_NOMATCH;
+	}
+	if (info->bitmask & EBT_STP_HELLOTIME) {
+		v16 = NR16(stpc->hello_time);
+		if (FWINV(v16 < c->hello_timel ||
+		    v16 > c->hello_timeu, EBT_STP_HELLOTIME))
+			return EBT_NOMATCH;
+	}
+	if (info->bitmask & EBT_STP_FWDD) {
+		v16 = NR16(stpc->forward_delay);
+		if (FWINV(v16 < c->forward_delayl ||
+		    v16 > c->forward_delayu, EBT_STP_FWDD))
+			return EBT_NOMATCH;
+	}
+	return EBT_MATCH;
+}
+
+static int ebt_filter_stp(const struct sk_buff *skb, const struct net_device *in,
+   const struct net_device *out, const void *data, unsigned int datalen)
+{
+	struct ebt_stp_info *info = (struct ebt_stp_info *)data;
+	struct stp_header stph;
+	uint8_t header[6] = {0x42, 0x42, 0x03, 0x00, 0x00, 0x00};
+	if (skb_copy_bits(skb, 0, &stph, sizeof(stph)))
+		return EBT_NOMATCH;
+
+	/* The stp code only considers these */
+	if (memcmp(&stph, header, sizeof(header)))
+		return EBT_NOMATCH;
+
+	if (info->bitmask & EBT_STP_TYPE
+	    && FWINV(info->type != stph.type, EBT_STP_TYPE))
+		return EBT_NOMATCH;
+
+	if (stph.type == BPDU_TYPE_CONFIG &&
+	    info->bitmask & EBT_STP_CONFIG_MASK) {
+		struct stp_config_pdu stpc;
+
+		if (skb_copy_bits(skb, sizeof(stph), &stpc, sizeof(stpc)))
+		    return EBT_NOMATCH;
+		return ebt_filter_config(info, &stpc);
+	}
+	return EBT_MATCH;
+}
+
+static int ebt_stp_check(const char *tablename, unsigned int hookmask,
+   const struct ebt_entry *e, void *data, unsigned int datalen)
+{
+	struct ebt_stp_info *info = (struct ebt_stp_info *)data;
+	int len = EBT_ALIGN(sizeof(struct ebt_stp_info));
+	uint8_t bridge_ula[6] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
+	uint8_t msk[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+
+	if (info->bitmask & ~EBT_STP_MASK || info->invflags & ~EBT_STP_MASK ||
+	    !(info->bitmask & EBT_STP_MASK))
+		return -EINVAL;
+	if (datalen != len)
+		return -EINVAL;
+	/* Make sure the match only receives stp frames */
+	if (memcmp(e->destmac, bridge_ula, ETH_ALEN) ||
+	    memcmp(e->destmsk, msk, ETH_ALEN) || !(e->bitmask & EBT_DESTMAC))
+		return -EINVAL;
+
+	return 0;
+}
+
+static struct ebt_match filter_stp =
+{
+	.name		= EBT_STP_MATCH,
+	.match		= ebt_filter_stp,
+	.check		= ebt_stp_check,
+	.me		= THIS_MODULE,
+};
+
+static int __init init(void)
+{
+	return ebt_register_match(&filter_stp);
+}
+
+static void __exit fini(void)
+{
+	ebt_unregister_match(&filter_stp);
+}
+
+module_init(init);
+module_exit(fini);
+EXPORT_NO_SYMBOLS;
+MODULE_LICENSE("GPL");
--- /dev/null	2004-04-06 13:56:48.000000000 -0400
+++ linux-2.4.20/net/bridge/netfilter/ebt_redirect.c	2005-01-07 02:57:30.889818208 -0500
@@ -0,0 +1,71 @@
+/*
+ *  ebt_redirect
+ *
+ *	Authors:
+ *	Bart De Schuymer <bart.de.schuymer@pandora.be>
+ *
+ *  April, 2002
+ *
+ */
+
+#include <linux/netfilter_bridge/ebtables.h>
+#include <linux/netfilter_bridge/ebt_redirect.h>
+#include <linux/module.h>
+#include <net/sock.h>
+#include "../br_private.h"
+
+static int ebt_target_redirect(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_redirect_info *info = (struct ebt_redirect_info *)data;
+
+	if (hooknr != NF_BR_BROUTING)
+		memcpy((**pskb).mac.ethernet->h_dest,
+		   in->br_port->br->dev.dev_addr, ETH_ALEN);
+	else {
+		memcpy((**pskb).mac.ethernet->h_dest,
+		   in->dev_addr, ETH_ALEN);
+		(*pskb)->pkt_type = PACKET_HOST;
+	}
+	return info->target;
+}
+
+static int ebt_target_redirect_check(const char *tablename, unsigned int hookmask,
+   const struct ebt_entry *e, void *data, unsigned int datalen)
+{
+	struct ebt_redirect_info *info = (struct ebt_redirect_info *)data;
+
+	if (datalen != EBT_ALIGN(sizeof(struct ebt_redirect_info)))
+		return -EINVAL;
+	if (BASE_CHAIN && info->target == EBT_RETURN)
+		return -EINVAL;
+	CLEAR_BASE_CHAIN_BIT;
+	if ( (strcmp(tablename, "nat") || hookmask & ~(1 << NF_BR_PRE_ROUTING)) &&
+	     (strcmp(tablename, "broute") || hookmask & ~(1 << NF_BR_BROUTING)) )
+		return -EINVAL;
+	if (INVALID_TARGET)
+		return -EINVAL;
+	return 0;
+}
+
+static struct ebt_target redirect_target =
+{
+	{NULL, NULL}, EBT_REDIRECT_TARGET, ebt_target_redirect,
+	ebt_target_redirect_check, NULL, THIS_MODULE
+};
+
+static int __init init(void)
+{
+	return ebt_register_target(&redirect_target);
+}
+
+static void __exit fini(void)
+{
+	ebt_unregister_target(&redirect_target);
+}
+
+module_init(init);
+module_exit(fini);
+EXPORT_NO_SYMBOLS;
+MODULE_LICENSE("GPL");
--- /dev/null	2004-04-06 13:56:48.000000000 -0400
+++ linux-2.4.20/net/bridge/netfilter/ebt_arp.c	2005-01-07 02:57:30.889818208 -0500
@@ -0,0 +1,149 @@
+/*
+ *  ebt_arp
+ *
+ *	Authors:
+ *	Bart De Schuymer <bart.de.schuymer@pandora.be>
+ *	Tim Gardner <timg@tpi.com>
+ *
+ *  April, 2002
+ *
+ */
+
+#include <linux/netfilter_bridge/ebtables.h>
+#include <linux/netfilter_bridge/ebt_arp.h>
+#include <linux/if_arp.h>
+#include <linux/if_ether.h>
+#include <linux/module.h>
+
+static int ebt_filter_arp(const struct sk_buff *skb, const struct net_device *in,
+   const struct net_device *out, const void *data, unsigned int datalen)
+{
+	struct ebt_arp_info *info = (struct ebt_arp_info *)data;
+
+	if (info->bitmask & EBT_ARP_OPCODE && FWINV(info->opcode !=
+	   ((*skb).nh.arph)->ar_op, EBT_ARP_OPCODE))
+		return EBT_NOMATCH;
+	if (info->bitmask & EBT_ARP_HTYPE && FWINV(info->htype !=
+	   ((*skb).nh.arph)->ar_hrd, EBT_ARP_HTYPE))
+		return EBT_NOMATCH;
+	if (info->bitmask & EBT_ARP_PTYPE && FWINV(info->ptype !=
+	   ((*skb).nh.arph)->ar_pro, EBT_ARP_PTYPE))
+		return EBT_NOMATCH;
+
+	if (info->bitmask & (EBT_ARP_SRC_IP | EBT_ARP_DST_IP))
+	{
+		uint32_t arp_len = sizeof(struct arphdr) +
+		   (2 * (((*skb).nh.arph)->ar_hln)) +
+		   (2 * (((*skb).nh.arph)->ar_pln));
+		uint32_t dst;
+		uint32_t src;
+
+		// Make sure the packet is long enough.
+		if ((((*skb).nh.raw) + arp_len) > (*skb).tail)
+			return EBT_NOMATCH;
+		// IPv4 addresses are always 4 bytes.
+		if (((*skb).nh.arph)->ar_pln != sizeof(uint32_t))
+			return EBT_NOMATCH;
+
+		if (info->bitmask & EBT_ARP_SRC_IP) {
+			memcpy(&src, ((*skb).nh.raw) + sizeof(struct arphdr) +
+			   ((*skb).nh.arph)->ar_hln, sizeof(uint32_t));
+			if (FWINV(info->saddr != (src & info->smsk),
+			   EBT_ARP_SRC_IP))
+				return EBT_NOMATCH;
+		}
+
+		if (info->bitmask & EBT_ARP_DST_IP) {
+			memcpy(&dst, ((*skb).nh.raw)+sizeof(struct arphdr) +
+			   (2*(((*skb).nh.arph)->ar_hln)) +
+			   (((*skb).nh.arph)->ar_pln), sizeof(uint32_t));
+			if (FWINV(info->daddr != (dst & info->dmsk),
+			   EBT_ARP_DST_IP))
+				return EBT_NOMATCH;
+		}
+	}
+
+	if (info->bitmask & (EBT_ARP_SRC_MAC | EBT_ARP_DST_MAC))
+	{
+		uint32_t arp_len = sizeof(struct arphdr) +
+		   (2 * (((*skb).nh.arph)->ar_hln)) +
+		   (2 * (((*skb).nh.arph)->ar_pln));
+		unsigned char dst[ETH_ALEN];
+		unsigned char src[ETH_ALEN];
+
+		// Make sure the packet is long enough.
+		if ((((*skb).nh.raw) + arp_len) > (*skb).tail)
+			return EBT_NOMATCH;
+		// MAC addresses are 6 bytes.
+		if (((*skb).nh.arph)->ar_hln != ETH_ALEN)
+			return EBT_NOMATCH;
+		if (info->bitmask & EBT_ARP_SRC_MAC) {
+			uint8_t verdict, i;
+
+			memcpy(&src, ((*skb).nh.raw) +
+					sizeof(struct arphdr),
+					ETH_ALEN);
+			verdict = 0;
+			for (i = 0; i < 6; i++)
+				verdict |= (src[i] ^ info->smaddr[i]) &
+				       info->smmsk[i];	
+			if (FWINV(verdict != 0, EBT_ARP_SRC_MAC))
+				return EBT_NOMATCH;
+		}
+
+		if (info->bitmask & EBT_ARP_DST_MAC) { 
+			uint8_t verdict, i;
+
+			memcpy(&dst, ((*skb).nh.raw) +
+					sizeof(struct arphdr) +
+			   		(((*skb).nh.arph)->ar_hln) +
+			   		(((*skb).nh.arph)->ar_pln),
+					ETH_ALEN);
+			verdict = 0;
+			for (i = 0; i < 6; i++)
+				verdict |= (dst[i] ^ info->dmaddr[i]) &
+					info->dmmsk[i];
+			if (FWINV(verdict != 0, EBT_ARP_DST_MAC))
+				return EBT_NOMATCH;
+		}
+	}
+
+	return EBT_MATCH;
+}
+
+static int ebt_arp_check(const char *tablename, unsigned int hookmask,
+   const struct ebt_entry *e, void *data, unsigned int datalen)
+{
+	struct ebt_arp_info *info = (struct ebt_arp_info *)data;
+
+	if (datalen != EBT_ALIGN(sizeof(struct ebt_arp_info)))
+		return -EINVAL;
+	if ((e->ethproto != __constant_htons(ETH_P_ARP) &&
+	   e->ethproto != __constant_htons(ETH_P_RARP)) ||
+	   e->invflags & EBT_IPROTO)
+		return -EINVAL;
+	if (info->bitmask & ~EBT_ARP_MASK || info->invflags & ~EBT_ARP_MASK)
+		return -EINVAL;
+	return 0;
+}
+
+static struct ebt_match filter_arp =
+{
+	{NULL, NULL}, EBT_ARP_MATCH, ebt_filter_arp, ebt_arp_check, NULL,
+	THIS_MODULE
+};
+
+static int __init init(void)
+{
+	return ebt_register_match(&filter_arp);
+}
+
+static void __exit fini(void)
+{
+	ebt_unregister_match(&filter_arp);
+}
+
+module_init(init);
+module_exit(fini);
+EXPORT_NO_SYMBOLS;
+MODULE_LICENSE("GPL");
--- /dev/null	2004-04-06 13:56:48.000000000 -0400
+++ linux-2.4.20/net/bridge/netfilter/ebt_ip.c	2005-01-07 02:57:30.890818056 -0500
@@ -0,0 +1,121 @@
+/*
+ *  ebt_ip
+ *
+ *	Authors:
+ *	Bart De Schuymer <bart.de.schuymer@pandora.be>
+ *
+ *  April, 2002
+ *
+ *  Changes:
+ *    added ip-sport and ip-dport
+ *    Innominate Security Technologies AG <mhopf@innominate.com>
+ *    September, 2002
+ */
+
+#include <linux/netfilter_bridge/ebtables.h>
+#include <linux/netfilter_bridge/ebt_ip.h>
+#include <linux/ip.h>
+#include <linux/in.h>
+#include <linux/module.h>
+
+struct tcpudphdr {
+	uint16_t src;
+	uint16_t dst;
+};
+
+union h_u {
+	unsigned char *raw;
+	struct tcpudphdr *tuh;
+};
+
+static int ebt_filter_ip(const struct sk_buff *skb, const struct net_device *in,
+   const struct net_device *out, const void *data,
+   unsigned int datalen)
+{
+	struct ebt_ip_info *info = (struct ebt_ip_info *)data;
+
+	if (info->bitmask & EBT_IP_TOS &&
+	   FWINV(info->tos != ((*skb).nh.iph)->tos, EBT_IP_TOS))
+		return EBT_NOMATCH;
+	if (info->bitmask & EBT_IP_PROTO) {
+		if (FWINV(info->protocol != ((*skb).nh.iph)->protocol,
+		          EBT_IP_PROTO))
+			return EBT_NOMATCH;
+		if ( info->protocol == IPPROTO_TCP ||
+		     info->protocol == IPPROTO_UDP )
+		{
+			union h_u h;
+			h.raw = skb->data + skb->nh.iph->ihl*4;
+			if (info->bitmask & EBT_IP_DPORT) {
+				uint16_t port = ntohs(h.tuh->dst);
+				if (FWINV(port < info->dport[0] ||
+				          port > info->dport[1],
+				          EBT_IP_DPORT))
+				return EBT_NOMATCH;
+			}
+			if (info->bitmask & EBT_IP_SPORT) {
+				uint16_t port = ntohs(h.tuh->src);
+				if (FWINV(port < info->sport[0] ||
+				          port > info->sport[1],
+				          EBT_IP_SPORT))
+				return EBT_NOMATCH;
+			}
+		}
+	}
+	if (info->bitmask & EBT_IP_SOURCE &&
+	   FWINV((((*skb).nh.iph)->saddr & info->smsk) !=
+	   info->saddr, EBT_IP_SOURCE))
+		return EBT_NOMATCH;
+	if ((info->bitmask & EBT_IP_DEST) &&
+	   FWINV((((*skb).nh.iph)->daddr & info->dmsk) !=
+	   info->daddr, EBT_IP_DEST))
+		return EBT_NOMATCH;
+	return EBT_MATCH;
+}
+
+static int ebt_ip_check(const char *tablename, unsigned int hookmask,
+   const struct ebt_entry *e, void *data, unsigned int datalen)
+{
+	struct ebt_ip_info *info = (struct ebt_ip_info *)data;
+
+	if (datalen != EBT_ALIGN(sizeof(struct ebt_ip_info)))
+		return -EINVAL;
+	if (e->ethproto != __constant_htons(ETH_P_IP) ||
+	   e->invflags & EBT_IPROTO)
+		return -EINVAL;
+	if (info->bitmask & ~EBT_IP_MASK || info->invflags & ~EBT_IP_MASK)
+		return -EINVAL;
+	if (info->bitmask & (EBT_IP_DPORT | EBT_IP_SPORT)) {
+		if (!info->bitmask & EBT_IPROTO)
+			return -EINVAL;
+		if (info->protocol != IPPROTO_TCP &&
+		    info->protocol != IPPROTO_UDP)
+			 return -EINVAL;
+	}
+	if (info->bitmask & EBT_IP_DPORT && info->dport[0] > info->dport[1])
+		return -EINVAL;
+	if (info->bitmask & EBT_IP_SPORT && info->sport[0] > info->sport[1])
+		return -EINVAL;
+	return 0;
+}
+
+static struct ebt_match filter_ip =
+{
+	{NULL, NULL}, EBT_IP_MATCH, ebt_filter_ip, ebt_ip_check, NULL,
+	THIS_MODULE
+};
+
+static int __init init(void)
+{
+	return ebt_register_match(&filter_ip);
+}
+
+static void __exit fini(void)
+{
+	ebt_unregister_match(&filter_ip);
+}
+
+module_init(init);
+module_exit(fini);
+EXPORT_NO_SYMBOLS;
+MODULE_LICENSE("GPL");
--- /dev/null	2004-04-06 13:56:48.000000000 -0400
+++ linux-2.4.20/net/bridge/netfilter/ebt_vlan.c	2005-01-07 02:57:30.890818056 -0500
@@ -0,0 +1,259 @@
+/*
+ * Description: EBTables 802.1Q match extension kernelspace module.
+ * Authors: Nick Fedchik <nick@fedchik.org.ua>
+ *          Bart De Schuymer <bart.de.schuymer@pandora.be>
+ *    
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *  
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/if_ether.h>
+#include <linux/if_vlan.h>
+#include <linux/module.h>
+#include <linux/netfilter_bridge/ebtables.h>
+#include <linux/netfilter_bridge/ebt_vlan.h>
+
+static unsigned char debug;
+#define MODULE_VERSION "0.6"
+
+MODULE_PARM(debug, "0-1b");
+MODULE_PARM_DESC(debug, "debug=1 is turn on debug messages");
+MODULE_AUTHOR("Nick Fedchik <nick@fedchik.org.ua>");
+MODULE_DESCRIPTION("802.1Q match module (ebtables extension), v"
+		   MODULE_VERSION);
+MODULE_LICENSE("GPL");
+
+
+#define DEBUG_MSG(args...) if (debug) printk (KERN_DEBUG "ebt_vlan: " args)
+#define INV_FLAG(_inv_flag_) (info->invflags & _inv_flag_) ? "!" : ""
+#define GET_BITMASK(_BIT_MASK_) info->bitmask & _BIT_MASK_
+#define SET_BITMASK(_BIT_MASK_) info->bitmask |= _BIT_MASK_
+#define EXIT_ON_MISMATCH(_MATCH_,_MASK_) if (!((info->_MATCH_ == _MATCH_)^!!(info->invflags & _MASK_))) return 1;
+
+/*
+ * Function description: ebt_filter_vlan() is main engine for 
+ * checking passed 802.1Q frame according to 
+ * the passed extension parameters (in the *data buffer)
+ * ebt_filter_vlan() is called after successfull check the rule params
+ * by ebt_check_vlan() function.
+ * Parameters:
+ * const struct sk_buff *skb - pointer to passed ethernet frame buffer
+ * const void *data - pointer to passed extension parameters
+ * unsigned int datalen - length of passed *data buffer
+ * const struct net_device *in  -
+ * const struct net_device *out -
+ * const struct ebt_counter *c -
+ * Returned values:
+ * 0 - ok (all rule params matched)
+ * 1 - miss (rule params not acceptable to the parsed frame)
+ */
+static int
+ebt_filter_vlan(const struct sk_buff *skb,
+		const struct net_device *in,
+		const struct net_device *out,
+		const void *data, unsigned int datalen)
+{
+	struct ebt_vlan_info *info = (struct ebt_vlan_info *) data;	/* userspace data */
+	struct vlan_ethhdr *frame = (struct vlan_ethhdr *) skb->mac.raw;	/* Passed tagged frame */
+
+	unsigned short TCI;	/* Whole TCI, given from parsed frame */
+	unsigned short id;	/* VLAN ID, given from frame TCI */
+	unsigned char prio;	/* user_priority, given from frame TCI */
+	unsigned short encap;	/* VLAN encapsulated Type/Length field, given from orig frame */
+
+	/*
+	 * Tag Control Information (TCI) consists of the following elements:
+	 * - User_priority. The user_priority field is three bits in length, 
+	 * interpreted as a binary number. 
+	 * - Canonical Format Indicator (CFI). The Canonical Format Indicator 
+	 * (CFI) is a single bit flag value. Currently ignored.
+	 * - VLAN Identifier (VID). The VID is encoded as 
+	 * an unsigned binary number. 
+	 */
+	TCI = ntohs(frame->h_vlan_TCI);
+	id = TCI & VLAN_VID_MASK;
+	prio = (TCI >> 13) & 0x7;
+	encap = frame->h_vlan_encapsulated_proto;
+
+	/*
+	 * Checking VLAN Identifier (VID)
+	 */
+	if (GET_BITMASK(EBT_VLAN_ID)) {	/* Is VLAN ID parsed? */
+		EXIT_ON_MISMATCH(id, EBT_VLAN_ID);
+	}
+	/*
+	 * Checking user_priority
+	 */
+	if (GET_BITMASK(EBT_VLAN_PRIO)) {	/* Is VLAN user_priority parsed? */
+		EXIT_ON_MISMATCH(prio, EBT_VLAN_PRIO);
+	}
+	/*
+	 * Checking Encapsulated Proto (Length/Type) field
+	 */
+	if (GET_BITMASK(EBT_VLAN_ENCAP)) {	/* Is VLAN Encap parsed? */
+		EXIT_ON_MISMATCH(encap, EBT_VLAN_ENCAP);
+	}
+	/*
+	 * All possible extension parameters was parsed.
+	 * If rule never returned by missmatch, then all ok.
+	 */
+	return 0;
+}
+
+/*
+ * Function description: ebt_vlan_check() is called when userspace 
+ * delivers the table entry to the kernel, 
+ * and to check that userspace doesn't give a bad table.
+ * Parameters:
+ * const char *tablename - table name string
+ * unsigned int hooknr - hook number
+ * const struct ebt_entry *e - ebtables entry basic set
+ * const void *data - pointer to passed extension parameters
+ * unsigned int datalen - length of passed *data buffer
+ * Returned values:
+ * 0 - ok (all delivered rule params are correct)
+ * 1 - miss (rule params is out of range, invalid, incompatible, etc.)
+ */
+static int
+ebt_check_vlan(const char *tablename,
+	       unsigned int hooknr,
+	       const struct ebt_entry *e, void *data, unsigned int datalen)
+{
+	struct ebt_vlan_info *info = (struct ebt_vlan_info *) data;
+
+	/*
+	 * Parameters buffer overflow check 
+	 */
+	if (datalen != EBT_ALIGN(sizeof(struct ebt_vlan_info))) {
+		DEBUG_MSG
+		    ("passed size %d is not eq to ebt_vlan_info (%d)\n",
+		     datalen, sizeof(struct ebt_vlan_info));
+		return -EINVAL;
+	}
+
+	/*
+	 * Is it 802.1Q frame checked?
+	 */
+	if (e->ethproto != __constant_htons(ETH_P_8021Q)) {
+		DEBUG_MSG
+		    ("passed entry proto %2.4X is not 802.1Q (8100)\n",
+		     (unsigned short) ntohs(e->ethproto));
+		return -EINVAL;
+	}
+
+	/*
+	 * Check for bitmask range 
+	 * True if even one bit is out of mask
+	 */
+	if (info->bitmask & ~EBT_VLAN_MASK) {
+		DEBUG_MSG("bitmask %2X is out of mask (%2X)\n",
+			  info->bitmask, EBT_VLAN_MASK);
+		return -EINVAL;
+	}
+
+	/*
+	 * Check for inversion flags range 
+	 */
+	if (info->invflags & ~EBT_VLAN_MASK) {
+		DEBUG_MSG("inversion flags %2X is out of mask (%2X)\n",
+			  info->invflags, EBT_VLAN_MASK);
+		return -EINVAL;
+	}
+
+	/*
+	 * Reserved VLAN ID (VID) values
+	 * -----------------------------
+	 * 0 - The null VLAN ID. 
+	 * 1 - The default Port VID (PVID)
+	 * 0x0FFF - Reserved for implementation use. 
+	 * if_vlan.h: VLAN_GROUP_ARRAY_LEN 4096.
+	 */
+	if (GET_BITMASK(EBT_VLAN_ID)) {	/* when vlan-id param was spec-ed */
+		if (!!info->id) {	/* if id!=0 => check vid range */
+			if (info->id > VLAN_GROUP_ARRAY_LEN) {
+				DEBUG_MSG
+				    ("id %d is out of range (1-4096)\n",
+				     info->id);
+				return -EINVAL;
+			}
+			/*
+			 * Note: This is valid VLAN-tagged frame point.
+			 * Any value of user_priority are acceptable, 
+			 * but should be ignored according to 802.1Q Std.
+			 * So we just drop the prio flag. 
+			 */
+			info->bitmask &= ~EBT_VLAN_PRIO;
+		}
+		/*
+		 * Else, id=0 (null VLAN ID)  => user_priority range (any?)
+		 */
+	}
+
+	if (GET_BITMASK(EBT_VLAN_PRIO)) {
+		if ((unsigned char) info->prio > 7) {
+			DEBUG_MSG
+			    ("prio %d is out of range (0-7)\n",
+			     info->prio);
+			return -EINVAL;
+		}
+	}
+	/*
+	 * Check for encapsulated proto range - it is possible to be 
+	 * any value for u_short range.
+	 * if_ether.h:  ETH_ZLEN        60   -  Min. octets in frame sans FCS
+	 */
+	if (GET_BITMASK(EBT_VLAN_ENCAP)) {
+		if ((unsigned short) ntohs(info->encap) < ETH_ZLEN) {
+			DEBUG_MSG
+			    ("encap frame length %d is less than minimal\n",
+			     ntohs(info->encap));
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
+static struct ebt_match filter_vlan = {
+	{NULL, NULL},
+	EBT_VLAN_MATCH,
+	ebt_filter_vlan,
+	ebt_check_vlan,
+	NULL,
+	THIS_MODULE
+};
+
+/*
+ * Module initialization function.
+ */
+static int __init init(void)
+{
+	DEBUG_MSG("ebtables 802.1Q extension module v"
+		  MODULE_VERSION "\n");
+	DEBUG_MSG("module debug=%d\n", !!debug);
+	return ebt_register_match(&filter_vlan);
+}
+
+/*
+ * Module "finalization" function
+ */
+static void __exit fini(void)
+{
+	ebt_unregister_match(&filter_vlan);
+}
+
+module_init(init);
+module_exit(fini);
+
+EXPORT_NO_SYMBOLS;
--- /dev/null	2004-04-06 13:56:48.000000000 -0400
+++ linux-2.4.20/net/bridge/netfilter/ebt_log.c	2005-01-07 02:57:30.890818056 -0500
@@ -0,0 +1,152 @@
+/*
+ *  ebt_log
+ *
+ *	Authors:
+ *	Bart De Schuymer <bart.de.schuymer@pandora.be>
+ *
+ *  April, 2002
+ *
+ */
+
+#include <linux/netfilter_bridge/ebtables.h>
+#include <linux/netfilter_bridge/ebt_log.h>
+#include <linux/module.h>
+#include <linux/ip.h>
+#include <linux/in.h>
+#include <linux/if_arp.h>
+#include <linux/spinlock.h>
+
+static spinlock_t ebt_log_lock = SPIN_LOCK_UNLOCKED;
+
+static int ebt_log_check(const char *tablename, unsigned int hookmask,
+   const struct ebt_entry *e, void *data, unsigned int datalen)
+{
+	struct ebt_log_info *info = (struct ebt_log_info *)data;
+
+	if (datalen != EBT_ALIGN(sizeof(struct ebt_log_info)))
+		return -EINVAL;
+	if (info->bitmask & ~EBT_LOG_MASK)
+		return -EINVAL;
+	if (info->loglevel >= 8)
+		return -EINVAL;
+	info->prefix[EBT_LOG_PREFIX_SIZE - 1] = '\0';
+	return 0;
+}
+
+struct tcpudphdr
+{
+	uint16_t src;
+	uint16_t dst;
+};
+
+struct arppayload
+{
+	unsigned char mac_src[ETH_ALEN];
+	unsigned char ip_src[4];
+	unsigned char mac_dst[ETH_ALEN];
+	unsigned char ip_dst[4];
+};
+
+static void print_MAC(unsigned char *p)
+{
+	int i;
+
+	for (i = 0; i < ETH_ALEN; i++, p++)
+		printk("%02x%c", *p, i == ETH_ALEN - 1 ? ' ':':');
+}
+
+#define myNIPQUAD(a) a[0], a[1], a[2], a[3]
+static void ebt_log(const struct sk_buff *skb, const struct net_device *in,
+   const struct net_device *out, const void *data, unsigned int datalen)
+{
+	struct ebt_log_info *info = (struct ebt_log_info *)data;
+	char level_string[4] = "< >";
+	level_string[1] = '0' + info->loglevel;
+
+	spin_lock_bh(&ebt_log_lock);
+	printk(level_string);
+	printk("%s IN=%s OUT=%s ", info->prefix, in ? in->name : "",
+	   out ? out->name : "");
+
+	printk("MAC source = ");
+	print_MAC((skb->mac.ethernet)->h_source);
+	printk("MAC dest = ");
+	print_MAC((skb->mac.ethernet)->h_dest);
+
+	printk("proto = 0x%04x", ntohs(((*skb).mac.ethernet)->h_proto));
+
+	if ((info->bitmask & EBT_LOG_IP) && skb->mac.ethernet->h_proto ==
+	   htons(ETH_P_IP)){
+		struct iphdr *iph = skb->nh.iph;
+		printk(" IP SRC=%u.%u.%u.%u IP DST=%u.%u.%u.%u,",
+		   NIPQUAD(iph->saddr), NIPQUAD(iph->daddr));
+		printk(" IP tos=0x%02X, IP proto=%d", iph->tos, iph->protocol);
+		if (iph->protocol == IPPROTO_TCP ||
+		    iph->protocol == IPPROTO_UDP) {
+			struct tcpudphdr *ports = (struct tcpudphdr *)(skb->data + iph->ihl*4);
+
+			if (skb->data + iph->ihl*4 > skb->tail) {
+				printk(" INCOMPLETE TCP/UDP header");
+				goto out;
+			}
+			printk(" SPT=%u DPT=%u", ntohs(ports->src),
+			   ntohs(ports->dst));
+		}
+		goto out;
+	}
+
+	if ((info->bitmask & EBT_LOG_ARP) &&
+	    ((skb->mac.ethernet->h_proto == __constant_htons(ETH_P_ARP)) ||
+	    (skb->mac.ethernet->h_proto == __constant_htons(ETH_P_RARP)))) {
+		struct arphdr * arph = skb->nh.arph;
+		printk(" ARP HTYPE=%d, PTYPE=0x%04x, OPCODE=%d",
+		   ntohs(arph->ar_hrd), ntohs(arph->ar_pro),
+		   ntohs(arph->ar_op));
+		/* If it's for Ethernet and the lengths are OK,
+		 * then log the ARP payload */
+		if (arph->ar_hrd == __constant_htons(1) &&
+		    arph->ar_hln == ETH_ALEN &&
+		    arph->ar_pln == sizeof(uint32_t)) {
+			struct arppayload *arpp = (struct arppayload *)(skb->data + sizeof(*arph));
+
+			if (skb->data + sizeof(*arph) > skb->tail) {
+				printk(" INCOMPLETE ARP header");
+				goto out;
+			}
+
+			printk(" ARP MAC SRC=");
+			print_MAC(arpp->mac_src);
+			printk(" ARP IP SRC=%u.%u.%u.%u",
+			       myNIPQUAD(arpp->ip_src));
+			printk(" ARP MAC DST=");
+			print_MAC(arpp->mac_dst);
+			printk(" ARP IP DST=%u.%u.%u.%u",
+			       myNIPQUAD(arpp->ip_dst));
+		}
+
+	}
+out:
+	printk("\n");
+	spin_unlock_bh(&ebt_log_lock);
+}
+
+static struct ebt_watcher log =
+{
+	{NULL, NULL}, EBT_LOG_WATCHER, ebt_log, ebt_log_check, NULL,
+	THIS_MODULE
+};
+
+static int __init init(void)
+{
+	return ebt_register_watcher(&log);
+}
+
+static void __exit fini(void)
+{
+	ebt_unregister_watcher(&log);
+}
+
+module_init(init);
+module_exit(fini);
+EXPORT_NO_SYMBOLS;
+MODULE_LICENSE("GPL");
--- /dev/null	2004-04-06 13:56:48.000000000 -0400
+++ linux-2.4.20/net/bridge/netfilter/ebt_snat.c	2005-01-07 02:57:30.891817904 -0500
@@ -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/module.h>
+
+static int 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 *info = (struct ebt_nat_info *) data;
+
+	memcpy(((**pskb).mac.ethernet)->h_source, info->mac,
+	   ETH_ALEN * sizeof(unsigned char));
+	return info->target;
+}
+
+static int ebt_target_snat_check(const char *tablename, unsigned int hookmask,
+   const struct ebt_entry *e, void *data, unsigned int datalen)
+{
+	struct ebt_nat_info *info = (struct ebt_nat_info *) data;
+
+	if (datalen != EBT_ALIGN(sizeof(struct ebt_nat_info)))
+		return -EINVAL;
+	if (BASE_CHAIN && info->target == EBT_RETURN)
+		return -EINVAL;
+	CLEAR_BASE_CHAIN_BIT;
+	if (strcmp(tablename, "nat"))
+		return -EINVAL;
+	if (hookmask & ~(1 << NF_BR_POST_ROUTING))
+		return -EINVAL;
+	if (INVALID_TARGET)
+		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");
--- /dev/null	2004-04-06 13:56:48.000000000 -0400
+++ linux-2.4.20/net/bridge/netfilter/ebt_dnat.c	2005-01-07 02:57:30.891817904 -0500
@@ -0,0 +1,65 @@
+/*
+ *  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/module.h>
+#include <net/sock.h>
+
+static int 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 *info = (struct ebt_nat_info *)data;
+
+	memcpy(((**pskb).mac.ethernet)->h_dest, info->mac,
+	   ETH_ALEN * sizeof(unsigned char));
+	return info->target;
+}
+
+static int ebt_target_dnat_check(const char *tablename, unsigned int hookmask,
+   const struct ebt_entry *e, void *data, unsigned int datalen)
+{
+	struct ebt_nat_info *info = (struct ebt_nat_info *)data;
+
+	if (BASE_CHAIN && info->target == EBT_RETURN)
+		return -EINVAL;
+	CLEAR_BASE_CHAIN_BIT;
+	if ( (strcmp(tablename, "nat") ||
+	   (hookmask & ~((1 << NF_BR_PRE_ROUTING) | (1 << NF_BR_LOCAL_OUT)))) &&
+	   (strcmp(tablename, "broute") || hookmask & ~(1 << NF_BR_BROUTING)) )
+		return -EINVAL;
+	if (datalen != EBT_ALIGN(sizeof(struct ebt_nat_info)))
+		return -EINVAL;
+	if (INVALID_TARGET)
+		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");
--- /dev/null	2004-04-06 13:56:48.000000000 -0400
+++ linux-2.4.20/net/bridge/netfilter/ebtables.c	2005-01-07 02:57:30.893817600 -0500
@@ -0,0 +1,1490 @@
+/*
+ *  ebtables
+ *
+ *  Author:
+ *  Bart De Schuymer		<bart.de.schuymer@pandora.be>
+ *
+ *  ebtables.c,v 2.0, July, 2002
+ *
+ *  This code is stongly inspired on the iptables code which is
+ *  Copyright (C) 1999 Paul `Rusty' Russell & Michael J. Neuling
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version
+ *  2 of the License, or (at your option) any later version.
+ */
+
+// used for print_string
+#include <linux/sched.h>
+#include <linux/tty.h>
+
+#include <linux/kmod.h>
+#include <linux/module.h>
+#include <linux/vmalloc.h>
+#include <linux/netfilter_bridge/ebtables.h>
+#include <linux/spinlock.h>
+#include <asm/uaccess.h>
+#include <linux/smp.h>
+#include <net/sock.h>
+// needed for logical [in,out]-dev filtering
+#include "../br_private.h"
+
+// list_named_find
+#define ASSERT_READ_LOCK(x)
+#define ASSERT_WRITE_LOCK(x)
+#include <linux/netfilter_ipv4/listhelp.h>
+
+#if 0 // use this for remote debugging
+// Copyright (C) 1998 by Ori Pomerantz
+// Print the string to the appropriate tty, the one
+// the current task uses
+static void print_string(char *str)
+{
+	struct tty_struct *my_tty;
+
+	/* The tty for the current task */
+	my_tty = current->tty;
+	if (my_tty != NULL) {
+		(*(my_tty->driver).write)(my_tty, 0, str, strlen(str));
+		(*(my_tty->driver).write)(my_tty, 0, "\015\012", 2);
+	}
+}
+
+#define BUGPRINT(args) print_string(args);
+#else
+#define BUGPRINT(format, args...) printk("kernel msg: ebtables bug: please "\
+                                         "report to author: "format, ## args)
+// #define BUGPRINT(format, args...)
+#endif
+#define MEMPRINT(format, args...) printk("kernel msg: ebtables "\
+                                         ": out of memory: "format, ## args)
+// #define MEMPRINT(format, args...)
+
+
+
+// Each cpu has its own set of counters, so there is no need for write_lock in
+// the softirq
+// For reading or updating the counters, the user context needs to
+// get a write_lock
+
+// The size of each set of counters is altered to get cache alignment
+#define SMP_ALIGN(x) (((x) + SMP_CACHE_BYTES-1) & ~(SMP_CACHE_BYTES-1))
+#define COUNTER_OFFSET(n) (SMP_ALIGN(n * sizeof(struct ebt_counter)))
+#define COUNTER_BASE(c, n, cpu) ((struct ebt_counter *)(((char *)c) + \
+   COUNTER_OFFSET(n) * cpu))
+
+
+
+static DECLARE_MUTEX(ebt_mutex);
+static LIST_HEAD(ebt_tables);
+static LIST_HEAD(ebt_targets);
+static LIST_HEAD(ebt_matches);
+static LIST_HEAD(ebt_watchers);
+
+static struct ebt_target ebt_standard_target =
+{ {NULL, NULL}, EBT_STANDARD_TARGET, NULL, NULL, NULL, NULL};
+
+static inline int ebt_do_watcher (struct ebt_entry_watcher *w,
+   const struct sk_buff *skb, const struct net_device *in,
+   const struct net_device *out)
+{
+	w->u.watcher->watcher(skb, in, out, w->data,
+	   w->watcher_size);
+	// watchers don't give a verdict
+	return 0;
+}
+
+static inline int ebt_do_match (struct ebt_entry_match *m,
+   const struct sk_buff *skb, const struct net_device *in,
+   const struct net_device *out)
+{
+	return m->u.match->match(skb, in, out, m->data,
+	   m->match_size);
+}
+
+static inline int ebt_dev_check(char *entry, const struct net_device *device)
+{
+	if (*entry == '\0')
+		return 0;
+	if (!device)
+		return 1;
+	return !!strcmp(entry, device->name);
+}
+
+#define FWINV2(bool,invflg) ((bool) ^ !!(e->invflags & invflg))
+// process standard matches
+static inline int ebt_basic_match(struct ebt_entry *e, struct ethhdr *h,
+   const struct net_device *in, const struct net_device *out)
+{
+	int verdict, i;
+
+	if (e->bitmask & EBT_802_3) {
+		if (FWINV2(ntohs(h->h_proto) >= 1536, EBT_IPROTO))
+			return 1;
+	} else if (!(e->bitmask & EBT_NOPROTO) &&
+	   FWINV2(e->ethproto != h->h_proto, EBT_IPROTO))
+		return 1;
+
+	if (FWINV2(ebt_dev_check(e->in, in), EBT_IIN))
+		return 1;
+	if (FWINV2(ebt_dev_check(e->out, out), EBT_IOUT))
+		return 1;
+	if ((!in || !in->br_port) ? 0 : FWINV2(ebt_dev_check(
+	   e->logical_in, &in->br_port->br->dev), EBT_ILOGICALIN))
+		return 1;
+	if ((!out || !out->br_port) ? 0 : FWINV2(ebt_dev_check(
+	   e->logical_out, &out->br_port->br->dev), EBT_ILOGICALOUT))
+		return 1;
+
+	if (e->bitmask & EBT_SOURCEMAC) {
+		verdict = 0;
+		for (i = 0; i < 6; i++)
+			verdict |= (h->h_source[i] ^ e->sourcemac[i]) &
+			   e->sourcemsk[i];
+		if (FWINV2(verdict != 0, EBT_ISOURCE) )
+			return 1;
+	}
+	if (e->bitmask & EBT_DESTMAC) {
+		verdict = 0;
+		for (i = 0; i < 6; i++)
+			verdict |= (h->h_dest[i] ^ e->destmac[i]) &
+			   e->destmsk[i];
+		if (FWINV2(verdict != 0, EBT_IDEST) )
+			return 1;
+	}
+	return 0;
+}
+
+// Do some firewalling
+unsigned int ebt_do_table (unsigned int hook, struct sk_buff **pskb,
+   const struct net_device *in, const struct net_device *out,
+   struct ebt_table *table)
+{
+	int i, nentries;
+	struct ebt_entry *point;
+	struct ebt_counter *counter_base, *cb_base;
+	struct ebt_entry_target *t;
+	int verdict, sp = 0;
+	struct ebt_chainstack *cs;
+	struct ebt_entries *chaininfo;
+	char *base;
+	struct ebt_table_info *private = table->private;
+
+	read_lock_bh(&table->lock);
+	cb_base = COUNTER_BASE(private->counters, private->nentries,
+	   cpu_number_map(smp_processor_id()));
+	if (private->chainstack)
+		cs = private->chainstack[cpu_number_map(smp_processor_id())];
+	else
+		cs = NULL;
+	chaininfo = private->hook_entry[hook];
+	nentries = private->hook_entry[hook]->nentries;
+	point = (struct ebt_entry *)(private->hook_entry[hook]->data);
+	counter_base = cb_base + private->hook_entry[hook]->counter_offset;
+	// base for chain jumps
+	base = private->entries;
+	i = 0;
+	while (i < nentries) {
+		if (ebt_basic_match(point, (**pskb).mac.ethernet, in, out))
+			goto letscontinue;
+
+		if (EBT_MATCH_ITERATE(point, ebt_do_match, *pskb, in, out) != 0)
+			goto letscontinue;
+
+		// increase counter
+		(*(counter_base + i)).pcnt++;
+		(*(counter_base + i)).bcnt+=(**pskb).len;
+
+		// these should only watch: not modify, nor tell us
+		// what to do with the packet
+		EBT_WATCHER_ITERATE(point, ebt_do_watcher, *pskb, in,
+		   out);
+
+		t = (struct ebt_entry_target *)
+		   (((char *)point) + point->target_offset);
+		// standard target
+		if (!t->u.target->target)
+			verdict = ((struct ebt_standard_target *)t)->verdict;
+		else
+			verdict = t->u.target->target(pskb, hook,
+			   in, out, t->data, t->target_size);
+		if (verdict == EBT_ACCEPT) {
+			read_unlock_bh(