revert r9801 - fixes #2921

SVN-Revision: 10132

3 files changed, 1 insertions, 7126 deletions

diff --git a/package/kernel/modules/netfilter.mk b/package/kernel/modules/netfilter.mk
index 11b67db..61a4013 100644
--- a/package/kernel/modules/netfilter.mk
+++ b/package/kernel/modules/netfilter.mk
@@ -303,6 +303,7 @@ $(eval $(call KernelPackage,arptables))
 define KernelPackage/ebtables
   SUBMENU:=$(NF_MENU)
   TITLE:=Bridge firewalling modules
+  DEPENDS:=@LINUX_2_6
   FILES:=$(LINUX_DIR)/net/bridge/netfilter/*.$(LINUX_KMOD_SUFFIX)
   KCONFIG:=CONFIG_BRIDGE_NF_EBTABLES
   AUTOLOAD:=$(call AutoLoad,40,$(notdir $(patsubst %.ko,%,ebtables.ko $(wildcard $(LINUX_DIR)/net/bridge/netfilter/ebtable_*.$(LINUX_KMOD_SUFFIX)) $(wildcard $(LINUX_DIR)/net/bridge/netfilter/ebt_*.$(LINUX_KMOD_SUFFIX)))))
diff --git a/target/linux/generic-2.4/config-default b/target/linux/generic-2.4/config-default
index 017bfd0..f2dc0df 100644
--- a/target/linux/generic-2.4/config-default
+++ b/target/linux/generic-2.4/config-default
@@ -47,26 +47,6 @@ CONFIG_BLK_DEV_SD=m
 # CONFIG_BLK_STATS is not set
 # CONFIG_BONDING is not set
 CONFIG_BRIDGE=y
-CONFIG_BRIDGE_NF_EBTABLES=m
-CONFIG_BRIDGE_EBT_T_FILTER=m
-CONFIG_BRIDGE_EBT_T_NAT=m
-CONFIG_BRIDGE_EBT_BROUTE=m
-CONFIG_BRIDGE_EBT_LOG=m
-CONFIG_BRIDGE_EBT_LOG=m
-CONFIG_BRIDGE_EBT_IPF=m
-CONFIG_BRIDGE_EBT_ARPF=m
-CONFIG_BRIDGE_EBT_AMONG=m
-CONFIG_BRIDGE_EBT_LIMIT=m
-CONFIG_BRIDGE_EBT_VLANF=m
-CONFIG_BRIDGE_EBT_802_3=m
-CONFIG_BRIDGE_EBT_PKTTYPE=m
-CONFIG_BRIDGE_EBT_STP=m
-CONFIG_BRIDGE_EBT_MARKF=m
-CONFIG_BRIDGE_EBT_ARPREPLY=m
-CONFIG_BRIDGE_EBT_SNAT=m
-CONFIG_BRIDGE_EBT_DNAT=m
-CONFIG_BRIDGE_EBT_REDIRECT=m
-CONFIG_BRIDGE_EBT_MARK_T=m
 # CONFIG_BSD_DISKLABEL is not set
 # CONFIG_BSD_PROCESS_ACCT is not set
 # CONFIG_BUILD_ELF64 is not set
@@ -261,7 +241,6 @@ CONFIG_IP_NF_MATCH_MAC=m
 CONFIG_IP_NF_MATCH_MARK=m
 CONFIG_IP_NF_MATCH_MULTIPORT=y
 CONFIG_IP_NF_MATCH_OWNER=m
-CONFIG_IP_NF_MATCH_PHYSDEV=m
 CONFIG_IP_NF_MATCH_PKTTYPE=m
 # CONFIG_IP_NF_MATCH_QUOTA is not set
 CONFIG_IP_NF_MATCH_RANDOM=m
diff --git a/target/linux/generic-2.4/patches/116-ebtables-brnf-11.patch b/target/linux/generic-2.4/patches/116-ebtables-brnf-11.patch
deleted file mode 100644
index 20daa02..0000000
--- a/target/linux/generic-2.4/patches/116-ebtables-brnf-11.patch
+++ /dev/null
@@ -1,7105 +0,0 @@
---- linux-2.4.31/net/bridge/br_private.h	2004-08-07 23:26:06.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/br_private.h	2005-09-15 16:57:22.000000000 +0000
-@@ -143,8 +143,10 @@ extern void br_fdb_insert(struct net_bri
- /* 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);
-@@ -165,7 +167,8 @@ extern void br_get_port_ifindices(struct
- 			   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 int br_ioctl(struct net_bridge *br,
-@@ -175,6 +178,10 @@ extern int br_ioctl(struct net_bridge *b
- 	     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-2.4.31/include/linux/if_bridge.h	2001-11-22 19:47:12.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/if_bridge.h	2005-09-15 16:57:23.000000000 +0000
-@@ -102,7 +102,8 @@ struct net_bridge;
- 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-2.4.31/net/core/dev.c	2005-04-04 01:42:20.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/net/core/dev.c	2005-09-15 16:57:23.000000000 +0000
-@@ -1426,7 +1426,7 @@ static void net_tx_action(struct softirq
- 
- 
- #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,
-@@ -1443,7 +1443,6 @@ static __inline__ int handle_bridge(stru
- 		}
- 	}
- 
--	br_handle_frame_hook(skb);
- 	return ret;
- }
- 
-@@ -1503,7 +1502,12 @@ int netif_receive_skb(struct sk_buff *sk
- #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
- 	if (skb->dev->br_port != NULL && br_handle_frame_hook != NULL &&
- 	    skb->pkt_type != PACKET_LOOPBACK) {
--		return handle_bridge(skb, pt_prev);
-+		int ret;
-+
-+		ret = handle_bridge(skb, pt_prev);
-+		if (br_handle_frame_hook(skb) == 0)
-+			return ret;
-+		pt_prev = NULL;
- 	}
- #endif
- 
---- linux-2.4.31/net/bridge/br_input.c	2003-08-25 11:44:44.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/br_input.c	2005-09-22 17:19:52.212834152 +0000
-@@ -24,6 +24,9 @@ unsigned char bridge_ula[6] = { 0x01, 0x
- 
- 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 @@ static void br_pass_frame_up(struct net_
- 			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;
-@@ -61,6 +64,9 @@ static int br_handle_frame_finish(struct
- 		goto err_nolock;
- 
- 	br = p->br;
-+	/* insert into forwarding database after filtering to avoid spoofing */
-+	br_fdb_insert(br, p, skb->mac.ethernet->h_source, 0);
-+
- 	read_lock(&br->lock);
- 	if (skb->dev->br_port == NULL)
- 		goto err;
-@@ -112,7 +118,7 @@ err_nolock:
- 	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;
-@@ -136,8 +142,7 @@ void br_handle_frame(struct sk_buff *skb
- 	if (skb->mac.ethernet->h_source[0] & 1)
- 		goto err;
- 
--	if (p->state == BR_STATE_LEARNING ||
--	    p->state == BR_STATE_FORWARDING)
-+	if (p->state == BR_STATE_LEARNING)
- 		br_fdb_insert(br, p, skb->mac.ethernet->h_source, 0);
- 
- 	if (br->stp_enabled &&
-@@ -146,26 +151,35 @@ void br_handle_frame(struct sk_buff *skb
- 		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]) {
- 		NF_HOOK(PF_BRIDGE, NF_BR_LOCAL_IN, skb, skb->dev,NULL,
- 			br_stp_handle_bpdu);
- 		read_unlock(&br->lock);
--		return;
-+		return 0;
- 	}
- 
- 	read_unlock(&br->lock);
- 	kfree_skb(skb);
-+	return 0;
- }
---- linux-2.4.31/net/bridge/br_stp_bpdu.c	2003-11-28 18:26:21.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/br_stp_bpdu.c	2005-09-22 17:20:13.385615400 +0000
-@@ -142,6 +142,9 @@ int br_stp_handle_bpdu(struct sk_buff *s
- 
- 	p = skb->dev->br_port;
- 
-+	/* insert into forwarding database after filtering to avoid spoofing */
-+	br_fdb_insert(p->br, p, skb->mac.ethernet->h_source, 0);
-+
- 	if (!p->br->stp_enabled ||
- 	    !pskb_may_pull(skb, sizeof(header)+1) ||
- 	    memcmp(skb->data, header, sizeof(header)))
---- linux-2.4.31/net/bridge/br_forward.c	2003-11-28 18:26:21.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/br_forward.c	2005-09-15 16:57:23.000000000 +0000
-@@ -30,18 +30,21 @@ static inline int should_deliver(struct 
- 	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
-+	nf_bridge_maybe_copy_header(skb);
-+#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 +52,11 @@ static int __br_forward_finish(struct sk
- 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)
-@@ -62,7 +68,7 @@ static void __br_forward(struct net_brid
- 	skb->ip_summed = CHECKSUM_NONE;
- 
- 	NF_HOOK(PF_BRIDGE, NF_BR_FORWARD, skb, indev, skb->dev,
--			__br_forward_finish);
-+			br_forward_finish);
- }
- 
- /* called under bridge lock */
---- linux-2.4.31/net/bridge/br.c	2004-08-07 23:26:06.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/br.c	2005-09-15 16:57:23.000000000 +0000
-@@ -30,6 +30,8 @@
- #include "../atm/lec.h"
- #endif
- 
-+int (*br_should_route_hook) (struct sk_buff **pskb) = NULL;
-+
- void br_dec_use_count()
- {
- 	MOD_DEC_USE_COUNT;
-@@ -44,6 +46,10 @@ static int __init br_init(void)
- {
- 	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)
-@@ -57,6 +63,9 @@ static int __init br_init(void)
- 
- static void __exit br_deinit(void)
- {
-+#ifdef CONFIG_NETFILTER
-+	br_netfilter_fini();
-+#endif
- 	unregister_netdevice_notifier(&br_device_notifier);
- 
- 	rtnl_lock();
-@@ -73,7 +82,7 @@ static void __exit br_deinit(void)
- #endif
- }
- 
--EXPORT_NO_SYMBOLS;
-+EXPORT_SYMBOL(br_should_route_hook);
- 
- module_init(br_init)
- module_exit(br_deinit)
---- linux-2.4.31/net/bridge/Makefile	2000-12-29 22:07:24.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/Makefile	2005-09-15 16:57:23.000000000 +0000
-@@ -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-2.4.31/include/linux/netfilter_bridge.h	2001-06-12 02:15:27.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/netfilter_bridge.h	2005-09-15 16:57:23.000000000 +0000
-@@ -6,6 +6,10 @@
- 
- #include <linux/config.h>
- #include <linux/netfilter.h>
-+#if defined(__KERNEL__) && defined(CONFIG_NETFILTER)
-+#include <asm/atomic.h>
-+#include <linux/if_ether.h>
-+#endif
- 
- /* Bridge Hooks */
- /* After promisc drops, checksum checks. */
-@@ -18,7 +22,89 @@
- #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
-+#define BRNF_NF_BRIDGE_PREROUTING	0x10
-+
-+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;
-+#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
-+		(*nf_bridge)->netoutdev = NULL;
-+#endif
-+	}
-+
-+	return *nf_bridge;
-+}
-+
-+/* Only used in br_forward.c */
-+static inline
-+void nf_bridge_maybe_copy_header(struct sk_buff *skb)
-+{
-+	if (skb->nf_bridge) {
-+		if (skb->protocol == __constant_htons(ETH_P_8021Q)) {
-+			memcpy(skb->data - 18, skb->nf_bridge->data, 18);
-+			skb_push(skb, 4);
-+		} else
-+			memcpy(skb->data - 16, skb->nf_bridge->data, 16);
-+	}
-+}
-+
-+static inline
-+void nf_bridge_save_header(struct sk_buff *skb)
-+{
-+        int header_size = 16;
-+
-+	if (skb->protocol == __constant_htons(ETH_P_8021Q))
-+		header_size = 18;
-+	memcpy(skb->nf_bridge->data, skb->data - header_size, header_size);
-+}
-+
-+struct bridge_skb_cb {
-+	union {
-+		__u32 ipv4;
-+	} daddr;
-+};
-+
- 
-+/* This is called by the IP fragmenting code and it ensures there is
-+ * enough room for the encapsulating header (if there is one). */
-+static inline
-+int nf_bridge_pad(struct sk_buff *skb)
-+{
-+        if (skb->nf_bridge) {
-+                if (skb->protocol == __constant_htons(ETH_P_8021Q))
-+                        return 4;
-+        }
-+        return 0;
-+}
-+#endif /* CONFIG_NETFILTER */
- 
-+#endif /* __KERNEL__ */
- #endif
---- linux-2.4.31/include/linux/netfilter_ipv4/ip_tables.h	2005-04-04 01:42:20.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/netfilter_ipv4/ip_tables.h	2005-09-15 16:57:23.000000000 +0000
-@@ -159,7 +159,7 @@ struct ipt_entry
- #define IPT_CONTINUE 0xFFFFFFFF
- 
- /* For standard target */
--#define IPT_RETURN (-NF_MAX_VERDICT - 1)
-+#define IPT_RETURN (-NF_REPEAT - 1)
- 
- /* TCP matching stuff */
- struct ipt_tcp
---- linux-2.4.31/include/linux/netfilter_ipv6/ip6_tables.h	2005-04-04 01:42:20.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/netfilter_ipv6/ip6_tables.h	2005-09-15 16:57:23.000000000 +0000
-@@ -165,7 +165,7 @@ struct ip6t_entry
- #define IP6T_CONTINUE 0xFFFFFFFF
- 
- /* For standard target */
--#define IP6T_RETURN (-NF_MAX_VERDICT - 1)
-+#define IP6T_RETURN (-NF_REPEAT - 1)
- 
- /* TCP matching stuff */
- struct ip6t_tcp
---- linux-2.4.31/include/linux/netfilter_arp/arp_tables.h	2003-08-25 11:44:44.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/netfilter_arp/arp_tables.h	2005-09-15 16:57:23.000000000 +0000
-@@ -154,7 +154,7 @@ struct arpt_entry
- #define ARPT_CONTINUE 0xFFFFFFFF
- 
- /* For standard target */
--#define ARPT_RETURN (-NF_MAX_VERDICT - 1)
-+#define ARPT_RETURN (-NF_REPEAT - 1)
- 
- /* The argument to ARPT_SO_GET_INFO */
- struct arpt_getinfo
---- linux-2.4.31/net/Makefile	2004-08-07 23:26:06.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/net/Makefile	2005-09-15 16:57:23.000000000 +0000
-@@ -7,7 +7,8 @@
- 
- O_TARGET :=	network.o
- 
--mod-subdirs :=	ipv4/netfilter ipv6/netfilter ipx irda bluetooth atm netlink sched core sctp 802
-+mod-subdirs :=	ipv4/netfilter ipv6/netfilter bridge/netfilter ipx irda \
-+	bluetooth atm netlink sched core sctp 802
- export-objs :=	netsyms.o
- 
- subdir-y :=	core ethernet
-@@ -27,6 +28,12 @@ subdir-$(CONFIG_NETFILTER)	+= ipv6/netfi
- 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-2.4.31/net/Config.in	2005-01-19 14:10:13.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/net/Config.in	2005-09-15 16:57:23.000000000 +0000
-@@ -70,6 +70,9 @@ if [ "$CONFIG_DECNET" != "n" ]; then
-    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	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/netfilter/Makefile	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,34 @@
-+#
-+# 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-$(CONFIG_BRIDGE_EBT_802_3) += ebt_802_3.o
-+obj-$(CONFIG_BRIDGE_EBT_ARPF) += ebt_arp.o
-+obj-$(CONFIG_BRIDGE_EBT_AMONG) += ebt_among.o
-+obj-$(CONFIG_BRIDGE_EBT_IPF) += ebt_ip.o
-+obj-$(CONFIG_BRIDGE_EBT_LIMIT) += ebt_limit.o
-+obj-$(CONFIG_BRIDGE_EBT_MARKF) += ebt_mark_m.o
-+obj-$(CONFIG_BRIDGE_EBT_PKTTYPE) += ebt_pkttype.o
-+obj-$(CONFIG_BRIDGE_EBT_STP) += ebt_stp.o
-+obj-$(CONFIG_BRIDGE_EBT_VLANF) += ebt_vlan.o
-+obj-$(CONFIG_BRIDGE_EBT_LOG) += ebt_log.o
-+obj-$(CONFIG_BRIDGE_EBT_LOG) += ebt_ulog.o
-+obj-$(CONFIG_BRIDGE_EBT_ARPREPLY) += ebt_arpreply.o
-+obj-$(CONFIG_BRIDGE_EBT_DNAT) += ebt_dnat.o
-+obj-$(CONFIG_BRIDGE_EBT_MARK_T) += ebt_mark.o
-+obj-$(CONFIG_BRIDGE_EBT_REDIRECT) += ebt_redirect.o
-+obj-$(CONFIG_BRIDGE_EBT_SNAT) += ebt_snat.o
-+include $(TOPDIR)/Rules.make
---- /dev/null	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/netfilter/Config.in	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,23 @@
-+#
-+# 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: ulog 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: among filter support' CONFIG_BRIDGE_EBT_AMONG $CONFIG_BRIDGE_NF_EBTABLES
-+dep_tristate '    ebt: limit filter support' CONFIG_BRIDGE_EBT_LIMIT $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: arp reply target support' CONFIG_BRIDGE_EBT_ARPREPLY $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	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/netfilter/ebtable_filter.c	2005-09-15 16:57:23.000000000 +0000
-@@ -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	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/netfilter/ebtable_nat.c	2005-09-15 16:57:23.000000000 +0000
-@@ -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	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/netfilter/ebtable_broute.c	2005-09-15 16:57:23.000000000 +0000
-@@ -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	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/netfilter/ebt_among.c	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,223 @@
-+/*
-+ *  ebt_among
-+ *
-+ *	Authors:
-+ *	Grzegorz Borowiak <grzes@gnu.univ.gda.pl>
-+ *
-+ *  August, 2003
-+ *
-+ */
-+
-+#include <linux/netfilter_bridge/ebtables.h>
-+#include <linux/netfilter_bridge/ebt_among.h>
-+#include <linux/ip.h>
-+#include <linux/if_arp.h>
-+#include <linux/module.h>
-+
-+static int ebt_mac_wormhash_contains(const struct ebt_mac_wormhash *wh,
-+				     const char *mac, uint32_t ip)
-+{
-+	/* You may be puzzled as to how this code works.
-+	 * Some tricks were used, refer to 
-+	 * 	include/linux/netfilter_bridge/ebt_among.h
-+	 * as there you can find a solution of this mystery.
-+	 */
-+	const struct ebt_mac_wormhash_tuple *p;
-+	int start, limit, i;
-+	uint32_t cmp[2] = { 0, 0 };
-+	int key = (const unsigned char) mac[5];
-+
-+	memcpy(((char *) cmp) + 2, mac, 6);
-+	start = wh->table[key];
-+	limit = wh->table[key + 1];
-+	if (ip) {
-+		for (i = start; i < limit; i++) {
-+			p = &wh->pool[i];
-+			if (cmp[1] == p->cmp[1] && cmp[0] == p->cmp[0]) {
-+				if (p->ip == 0 || p->ip == ip) {
-+					return 1;
-+				}
-+			}
-+		}
-+	} else {
-+		for (i = start; i < limit; i++) {
-+			p = &wh->pool[i];
-+			if (cmp[1] == p->cmp[1] && cmp[0] == p->cmp[0]) {
-+				if (p->ip == 0) {
-+					return 1;
-+				}
-+			}
-+		}
-+	}
-+	return 0;
-+}
-+
-+static int ebt_mac_wormhash_check_integrity(const struct ebt_mac_wormhash
-+					    *wh)
-+{
-+	int i;
-+
-+	for (i = 0; i < 256; i++) {
-+		if (wh->table[i] > wh->table[i + 1])
-+			return -0x100 - i;
-+		if (wh->table[i] < 0)
-+			return -0x200 - i;
-+		if (wh->table[i] > wh->poolsize)
-+			return -0x300 - i;
-+	}
-+	if (wh->table[256] > wh->poolsize)
-+		return -0xc00;
-+	return 0;
-+}
-+
-+static int get_ip_dst(const struct sk_buff *skb, uint32_t * addr)
-+{
-+	if (skb->mac.ethernet->h_proto == __constant_htons(ETH_P_IP))
-+		*addr = skb->nh.iph->daddr;
-+	else if (skb->mac.ethernet->h_proto == __constant_htons(ETH_P_ARP)) {
-+		uint32_t arp_len = sizeof(struct arphdr) +
-+		    (2 * (((*skb).nh.arph)->ar_hln)) +
-+		    (2 * (((*skb).nh.arph)->ar_pln));
-+
-+		/* Make sure the packet is long enough. */
-+		if ((((*skb).nh.raw) + arp_len) > (*skb).tail)
-+			return -1;
-+		/* IPv4 addresses are always 4 bytes. */
-+		if (((*skb).nh.arph)->ar_pln != sizeof(uint32_t))
-+			return -1;
-+
-+		memcpy(addr, ((*skb).nh.raw) + sizeof(struct arphdr) +
-+		       (2 * (((*skb).nh.arph)->ar_hln)) +
-+		       (((*skb).nh.arph)->ar_pln), sizeof(uint32_t));
-+
-+	}
-+	return 0;
-+}
-+
-+static int get_ip_src(const struct sk_buff *skb, uint32_t * addr)
-+{
-+	if (skb->mac.ethernet->h_proto == __constant_htons(ETH_P_IP))
-+		*addr = skb->nh.iph->saddr;
-+	else if (skb->mac.ethernet->h_proto == __constant_htons(ETH_P_ARP)) {
-+		uint32_t arp_len = sizeof(struct arphdr) +
-+		    (2 * (((*skb).nh.arph)->ar_hln)) +
-+		    (2 * (((*skb).nh.arph)->ar_pln));
-+
-+		/* Make sure the packet is long enough. */
-+		if ((((*skb).nh.raw) + arp_len) > (*skb).tail)
-+			return -1;
-+		/* IPv4 addresses are always 4 bytes. */
-+		if (((*skb).nh.arph)->ar_pln != sizeof(uint32_t))
-+			return -1;
-+
-+		memcpy(addr, ((*skb).nh.raw) + sizeof(struct arphdr) +
-+		       ((((*skb).nh.arph)->ar_hln)), sizeof(uint32_t));
-+
-+	}
-+	return 0;
-+}
-+
-+static int ebt_filter_among(const struct sk_buff *skb,
-+			    const struct net_device *in,
-+			    const struct net_device *out, const void *data,
-+			    unsigned int datalen)
-+{
-+	struct ebt_among_info *info = (struct ebt_among_info *) data;
-+	const char *dmac, *smac;
-+	const struct ebt_mac_wormhash *wh_dst, *wh_src;
-+	uint32_t dip = 0, sip = 0;
-+
-+	wh_dst = ebt_among_wh_dst(info);
-+	wh_src = ebt_among_wh_src(info);
-+
-+	if (wh_src) {
-+		smac = skb->mac.ethernet->h_source;
-+		if (get_ip_src(skb, &sip))
-+			return EBT_NOMATCH;
-+		if (!(info->bitmask & EBT_AMONG_SRC_NEG)) {
-+			/* we match only if it contains */
-+			if (!ebt_mac_wormhash_contains(wh_src, smac, sip))
-+				return EBT_NOMATCH;
-+		} else {
-+			/* we match only if it DOES NOT contain */
-+			if (ebt_mac_wormhash_contains(wh_src, smac, sip))
-+				return EBT_NOMATCH;
-+		}
-+	}
-+
-+	if (wh_dst) {
-+		dmac = skb->mac.ethernet->h_dest;
-+		if (get_ip_dst(skb, &dip))
-+			return EBT_NOMATCH;
-+		if (!(info->bitmask & EBT_AMONG_DST_NEG)) {
-+			/* we match only if it contains */
-+			if (!ebt_mac_wormhash_contains(wh_dst, dmac, dip))
-+				return EBT_NOMATCH;
-+		} else {
-+			/* we match only if it DOES NOT contain */
-+			if (ebt_mac_wormhash_contains(wh_dst, dmac, dip))
-+				return EBT_NOMATCH;
-+		}
-+	}
-+
-+	return EBT_MATCH;
-+}
-+
-+static int ebt_among_check(const char *tablename, unsigned int hookmask,
-+			   const struct ebt_entry *e, void *data,
-+			   unsigned int datalen)
-+{
-+	struct ebt_among_info *info = (struct ebt_among_info *) data;
-+	int expected_length = sizeof(struct ebt_among_info);
-+	const struct ebt_mac_wormhash *wh_dst, *wh_src;
-+	int err;
-+
-+	wh_dst = ebt_among_wh_dst(info);
-+	wh_src = ebt_among_wh_src(info);
-+	expected_length += ebt_mac_wormhash_size(wh_dst);
-+	expected_length += ebt_mac_wormhash_size(wh_src);
-+
-+	if (datalen != EBT_ALIGN(expected_length)) {
-+		printk(KERN_WARNING
-+		       "ebtables: among: wrong size: %d"
-+		       "against expected %d, rounded to %d\n",
-+		       datalen, expected_length,
-+		       EBT_ALIGN(expected_length));
-+		return -EINVAL;
-+	}
-+	if (wh_dst && (err = ebt_mac_wormhash_check_integrity(wh_dst))) {
-+		printk(KERN_WARNING
-+		       "ebtables: among: dst integrity fail: %x\n", -err);
-+		return -EINVAL;
-+	}
-+	if (wh_src && (err = ebt_mac_wormhash_check_integrity(wh_src))) {
-+		printk(KERN_WARNING
-+		       "ebtables: among: src integrity fail: %x\n", -err);
-+		return -EINVAL;
-+	}
-+	return 0;
-+}
-+
-+static struct ebt_match filter_among = {
-+	{NULL, NULL}, 
-+	EBT_AMONG_MATCH, 
-+	ebt_filter_among, 
-+	ebt_among_check,
-+	NULL,
-+	THIS_MODULE
-+};
-+
-+static int __init init(void)
-+{
-+	return ebt_register_match(&filter_among);
-+}
-+
-+static void __exit fini(void)
-+{
-+	ebt_unregister_match(&filter_among);
-+}
-+
-+module_init(init);
-+module_exit(fini);
-+EXPORT_NO_SYMBOLS;
-+MODULE_LICENSE("GPL");
---- /dev/null	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/netfilter/ebt_limit.c	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,101 @@
-+/*
-+ *  ebt_limit
-+ *
-+ *	Authors:
-+ *	Tom Marshall <tommy@home.tig-grr.com>
-+ *
-+ *	Mostly copied from netfilter's ipt_limit.c, see that file for explanation
-+ *
-+ *  September, 2003
-+ *
-+ */
-+
-+#include <linux/netfilter_bridge/ebtables.h>
-+#include <linux/netfilter_bridge/ebt_limit.h>
-+#include <linux/module.h>
-+
-+#include <linux/netdevice.h>
-+#include <linux/spinlock.h>
-+
-+static spinlock_t limit_lock = SPIN_LOCK_UNLOCKED;
-+
-+#define CREDITS_PER_JIFFY 128
-+
-+static int ebt_limit_match(const struct sk_buff *skb, const struct net_device *in,
-+   const struct net_device *out, const void *data, unsigned int datalen)
-+{
-+	struct ebt_limit_info *info = (struct ebt_limit_info *)data;
-+	unsigned long now = jiffies;
-+
-+	spin_lock_bh(&limit_lock);
-+	info->credit += (now - xchg(&info->prev, now)) * CREDITS_PER_JIFFY;
-+	if (info->credit > info->credit_cap)
-+		info->credit = info->credit_cap;
-+
-+	if (info->credit >= info->cost) {
-+		/* We're not limited. */
-+		info->credit -= info->cost;
-+		spin_unlock_bh(&limit_lock);
-+		return EBT_MATCH;
-+	}
-+
-+	spin_unlock_bh(&limit_lock);
-+	return EBT_NOMATCH;
-+}
-+
-+/* Precision saver. */
-+static u_int32_t
-+user2credits(u_int32_t user)
-+{
-+	/* If multiplying would overflow... */
-+	if (user > 0xFFFFFFFF / (HZ*CREDITS_PER_JIFFY))
-+		/* Divide first. */
-+		return (user / EBT_LIMIT_SCALE) * HZ * CREDITS_PER_JIFFY;
-+
-+	return (user * HZ * CREDITS_PER_JIFFY) / EBT_LIMIT_SCALE;
-+}
-+
-+static int ebt_limit_check(const char *tablename, unsigned int hookmask,
-+   const struct ebt_entry *e, void *data, unsigned int datalen)
-+{
-+	struct ebt_limit_info *info = (struct ebt_limit_info *)data;
-+
-+	if (datalen != EBT_ALIGN(sizeof(struct ebt_limit_info)))
-+		return -EINVAL;
-+
-+	/* Check for overflow. */
-+	if (info->burst == 0
-+	    || user2credits(info->avg * info->burst) < user2credits(info->avg)) {
-+		printk("Overflow in ebt_limit: %u/%u\n",
-+			info->avg, info->burst);
-+		return -EINVAL;
-+	}
-+
-+	/* User avg in seconds * EBT_LIMIT_SCALE: convert to jiffies * 128. */
-+	info->prev = jiffies;
-+	info->credit = user2credits(info->avg * info->burst);
-+	info->credit_cap = user2credits(info->avg * info->burst);
-+	info->cost = user2credits(info->avg);
-+	return 0;
-+}
-+
-+static struct ebt_match ebt_limit_reg =
-+{
-+	{NULL, NULL}, EBT_LIMIT_MATCH, ebt_limit_match, ebt_limit_check, NULL,
-+	THIS_MODULE
-+};
-+
-+static int __init init(void)
-+{
-+	return ebt_register_match(&ebt_limit_reg);
-+}
-+
-+static void __exit fini(void)
-+{
-+	ebt_unregister_match(&ebt_limit_reg);
-+}
-+
-+module_init(init);
-+module_exit(fini);
-+EXPORT_NO_SYMBOLS;
-+MODULE_LICENSE("GPL");
---- /dev/null	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/netfilter/ebt_arpreply.c	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,86 @@
-+/*
-+ *  ebt_arpreply
-+ *
-+ *	Authors:
-+ *	Grzegorz Borowiak <grzes@gnu.univ.gda.pl>
-+ *	Bart De Schuymer <bdschuym@pandora.be>
-+ *
-+ *  August, 2003
-+ *
-+ */
-+
-+#include <linux/netfilter_bridge/ebtables.h>
-+#include <linux/netfilter_bridge/ebt_arpreply.h>
-+#include <linux/if_arp.h>
-+#include <net/arp.h>
-+#include <linux/module.h>
-+
-+static int ebt_target_reply(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_arpreply_info *info = (struct ebt_arpreply_info *)data;
-+	struct arphdr *ah;
-+	unsigned char *sha, *arp_ptr;
-+	u32 sip, tip;
-+
-+	ah = (**pskb).nh.arph;
-+	if (ah->ar_op != __constant_htons(ARPOP_REQUEST) ||
-+	    ah->ar_hln != ETH_ALEN || ah->ar_pro != htons(ETH_P_IP) ||
-+	    ah->ar_pln != 4)
-+		return EBT_CONTINUE;
-+
-+	arp_ptr = (unsigned char *)(ah + 1);
-+
-+	/* get source and target IP */
-+	sha = arp_ptr;
-+	arp_ptr += ETH_ALEN;
-+	memcpy(&sip, arp_ptr, 4);
-+	arp_ptr += 4 + ETH_ALEN;
-+	memcpy(&tip, arp_ptr, 4);
-+
-+	arp_send(ARPOP_REPLY, ETH_P_ARP, sip, in, tip, sha, info->mac, sha);
-+
-+	return info->target;
-+}
-+
-+static int ebt_target_reply_check(const char *tablename, unsigned int hookmask,
-+   const struct ebt_entry *e, void *data, unsigned int datalen)
-+{
-+	struct ebt_arpreply_info *info = (struct ebt_arpreply_info *)data;
-+
-+	if (datalen != EBT_ALIGN(sizeof(struct ebt_arpreply_info)))
-+		return -EINVAL;
-+	if (BASE_CHAIN && info->target == EBT_RETURN)
-+		return -EINVAL;
-+	if (e->ethproto != __constant_htons(ETH_P_ARP) ||
-+	    e->invflags & EBT_IPROTO)
-+		return -EINVAL;
-+	CLEAR_BASE_CHAIN_BIT;
-+	if (strcmp(tablename, "nat") || hookmask & ~(1 << NF_BR_PRE_ROUTING))
-+		return -EINVAL;
-+	return 0;
-+}
-+
-+static struct ebt_target reply_target =
-+{
-+	.name		= EBT_ARPREPLY_TARGET,
-+	.target		= ebt_target_reply,
-+	.check		= ebt_target_reply_check,
-+	.me		= THIS_MODULE,
-+};
-+
-+static int __init init(void)
-+{
-+	return ebt_register_target(&reply_target);
-+}
-+
-+static void __exit fini(void)
-+{
-+	ebt_unregister_target(&reply_target);
-+}
-+
-+module_init(init);
-+module_exit(fini);
-+EXPORT_NO_SYMBOLS;
-+MODULE_LICENSE("GPL");
---- /dev/null	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/netfilter/ebt_802_3.c	2005-09-15 16:57:23.000000000 +0000
-@@ -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	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/netfilter/ebt_mark.c	2005-09-15 16:57:23.000000000 +0000
-@@ -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	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/netfilter/ebt_mark_m.c	2005-09-15 16:57:23.000000000 +0000
-@@ -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	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/netfilter/ebt_pkttype.c	2005-09-15 16:57:23.000000000 +0000
-@@ -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	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/netfilter/ebt_stp.c	2005-09-15 16:57:23.000000000 +0000
-@@ -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	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/netfilter/ebt_redirect.c	2005-09-15 16:57:23.000000000 +0000
-@@ -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	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/netfilter/ebt_arp.c	2005-09-15 16:57:23.000000000 +0000
-@@ -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	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/netfilter/ebt_ip.c	2005-09-15 16:57:23.000000000 +0000
-@@ -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	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/netfilter/ebt_vlan.c	2005-09-15 16:57:23.000000000 +0000
-@@ -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	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/netfilter/ebt_log.c	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,153 @@
-+/*
-+ *  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, unsigned int hooknr,
-+   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	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/netfilter/ebt_ulog.c	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,281 @@
-+/*
-+ * netfilter module for userspace bridged Ethernet frames logging daemons
-+ *
-+ *	Authors:
-+ *	Bart De Schuymer <bdschuym@pandora.be>
-+ *
-+ *  November, 2004
-+ *
-+ * Based on ipt_ULOG.c, which is
-+ * (C) 2000-2002 by Harald Welte <laforge@netfilter.org>
-+ *
-+ * This module accepts two parameters: 
-+ * 
-+ * nlbufsiz:
-+ *   The parameter specifies how big the buffer for each netlink multicast
-+ * group is. e.g. If you say nlbufsiz=8192, up to eight kb of packets will
-+ * get accumulated in the kernel until they are sent to userspace. It is
-+ * NOT possible to allocate more than 128kB, and it is strongly discouraged,
-+ * because atomically allocating 128kB inside the network rx softirq is not
-+ * reliable. Please also keep in mind that this buffer size is allocated for
-+ * each nlgroup you are using, so the total kernel memory usage increases
-+ * by that factor.
-+ *
-+ * flushtimeout:
-+ *   Specify, after how many hundredths of a second the queue should be
-+ *   flushed even if it is not full yet.
-+ *
-+ */
-+
-+#include <linux/module.h>
-+#include <linux/config.h>
-+#include <linux/spinlock.h>
-+#include <linux/socket.h>
-+#include <linux/skbuff.h>
-+#include <linux/kernel.h>
-+#include <linux/timer.h>
-+#include <linux/netlink.h>
-+#include <linux/netdevice.h>
-+#include <linux/module.h>
-+#include <linux/netfilter_bridge/ebtables.h>
-+#include <linux/netfilter_bridge/ebt_ulog.h>
-+#include <net/sock.h>
-+#include "../br_private.h"
-+
-+#define PRINTR(format, args...)	do { if (net_ratelimit()) \
-+                               		printk(format , ## args); } while (0)
-+
-+static unsigned int nlbufsiz = 4096;
-+MODULE_PARM(nlbufsiz, "i");
-+MODULE_PARM_DESC(nlbufsiz, "netlink buffer size (number of bytes) "
-+                           "(defaults to 4096)");
-+
-+static unsigned int flushtimeout = 10;
-+MODULE_PARM(flushtimeout, "i");
-+MODULE_PARM_DESC(flushtimeout, "buffer flush timeout (hundredths of a second) "
-+                               "(defaults to 10)");
-+
-+typedef struct {
-+	unsigned int qlen;		/* number of nlmsgs' in the skb */
-+	struct nlmsghdr *lastnlh;	/* netlink header of last msg in skb */
-+	struct sk_buff *skb;		/* the pre-allocated skb */
-+	struct timer_list timer;	/* the timer function */
-+	spinlock_t lock;		/* the per-queue lock */
-+} ebt_ulog_buff_t;
-+
-+static ebt_ulog_buff_t ulog_buffers[EBT_ULOG_MAXNLGROUPS];
-+static struct sock *ebtlognl;
-+
-+/* send one ulog_buff_t to userspace */
-+static void ulog_send(unsigned int nlgroup)
-+{
-+	ebt_ulog_buff_t *ub = &ulog_buffers[nlgroup];
-+
-+	if (timer_pending(&ub->timer))
-+		del_timer(&ub->timer);
-+
-+	/* last nlmsg needs NLMSG_DONE */
-+	if (ub->qlen > 1)
-+		ub->lastnlh->nlmsg_type = NLMSG_DONE;
-+
-+	NETLINK_CB(ub->skb).dst_groups = 1 << nlgroup;
-+	netlink_broadcast(ebtlognl, ub->skb, 0, 1 << nlgroup, GFP_ATOMIC);
-+
-+	ub->qlen = 0;
-+	ub->skb = NULL;
-+}
-+
-+/* timer function to flush queue in flushtimeout time */
-+static void ulog_timer(unsigned long data)
-+{
-+	spin_lock_bh(&ulog_buffers[data].lock);
-+	if (ulog_buffers[data].skb)
-+		ulog_send(data);
-+	spin_unlock_bh(&ulog_buffers[data].lock);
-+}
-+
-+static struct sk_buff *ulog_alloc_skb(unsigned int size)
-+{
-+	struct sk_buff *skb;
-+
-+	skb = alloc_skb(nlbufsiz, GFP_ATOMIC);
-+	if (!skb) {
-+		PRINTR(KERN_ERR "ebt_ulog: can't alloc whole buffer "
-+		       "of size %ub!\n", nlbufsiz);
-+		if (size < nlbufsiz) {
-+			/* try to allocate only as much as we need for
-+			 * current packet */
-+			skb = alloc_skb(size, GFP_ATOMIC);
-+			if (!skb)
-+				PRINTR(KERN_ERR "ebt_ulog: can't even allocate "
-+				       "buffer of size %ub\n", size);
-+		}
-+	}
-+
-+	return skb;
-+}
-+
-+static void ebt_ulog(const struct sk_buff *skb, unsigned int hooknr,
-+   const struct net_device *in, const struct net_device *out,
-+   const void *data, unsigned int datalen)
-+{
-+	ebt_ulog_packet_msg_t *pm;
-+	size_t size, copy_len;
-+	struct nlmsghdr *nlh;
-+	struct ebt_ulog_info *loginfo = (struct ebt_ulog_info *)data;
-+	unsigned int group = loginfo->nlgroup;
-+	ebt_ulog_buff_t *ub = &ulog_buffers[group];
-+	spinlock_t *lock = &ub->lock;
-+
-+	if ((loginfo->cprange == 0) ||
-+	    (loginfo->cprange > skb->len + ETH_HLEN))
-+		copy_len = skb->len + ETH_HLEN;
-+	else
-+		copy_len = loginfo->cprange;
-+
-+	size = NLMSG_SPACE(sizeof(*pm) + copy_len);
-+
-+	spin_lock_bh(lock);
-+
-+	if (!ub->skb) {
-+		if (!(ub->skb = ulog_alloc_skb(size)))
-+			goto alloc_failure;
-+	} else if (size > skb_tailroom(ub->skb)) {
-+		ulog_send(group);
-+
-+		if (!(ub->skb = ulog_alloc_skb(size)))
-+			goto alloc_failure;
-+	}
-+
-+	nlh = NLMSG_PUT(ub->skb, 0, ub->qlen, 0,
-+	                size - NLMSG_ALIGN(sizeof(*nlh)));
-+	ub->qlen++;
-+
-+	pm = NLMSG_DATA(nlh);
-+
-+	/* Fill in the ulog data */
-+	do_gettimeofday(&pm->stamp);
-+	if (ub->qlen == 1)
-+		ub->skb->stamp = pm->stamp;
-+	pm->data_len = copy_len;
-+	pm->mark = skb->nfmark;
-+	pm->hook = hooknr;
-+	if (loginfo->prefix != NULL)
-+		strcpy(pm->prefix, loginfo->prefix);
-+	else
-+		*(pm->prefix) = '\0';
-+
-+	if (in) {
-+		strcpy(pm->physindev, in->name);
-+		strcpy(pm->indev, in->br_port->br->dev.name);
-+	} else
-+		pm->indev[0] = pm->physindev[0] = '\0';
-+
-+	if (out) {
-+		strcpy(pm->physoutdev, out->name);
-+		strcpy(pm->outdev, out->br_port->br->dev.name);
-+	} else
-+		pm->outdev[0] = pm->physoutdev[0] = '\0';
-+
-+	if (skb_copy_bits(skb, -ETH_HLEN, pm->data, copy_len) < 0)
-+		BUG();
-+
-+	if (ub->qlen > 1)
-+		ub->lastnlh->nlmsg_flags |= NLM_F_MULTI;
-+
-+	ub->lastnlh = nlh;
-+
-+	if (ub->qlen >= loginfo->qthreshold)
-+		ulog_send(group);
-+	else if (!timer_pending(&ub->timer)) {
-+		ub->timer.expires = jiffies + flushtimeout * HZ / 100;
-+		add_timer(&ub->timer);
-+	}
-+
-+unlock:
-+	spin_unlock_bh(lock);
-+
-+	return;
-+
-+nlmsg_failure:
-+	PRINTR(KERN_ERR "ebt_ULOG: error during NLMSG_PUT.\n");
-+	goto unlock;
-+alloc_failure:
-+	goto unlock;
-+}
-+
-+static int ebt_ulog_check(const char *tablename, unsigned int hookmask,
-+   const struct ebt_entry *e, void *data, unsigned int datalen)
-+{
-+	struct ebt_ulog_info *loginfo = (struct ebt_ulog_info *)data;
-+
-+	if (datalen != EBT_ALIGN(sizeof(struct ebt_ulog_info)) ||
-+	    loginfo->nlgroup > 31)
-+		return -EINVAL;
-+
-+	loginfo->prefix[EBT_ULOG_PREFIX_LEN - 1] = '\0';
-+
-+	if (loginfo->qthreshold > EBT_ULOG_MAX_QLEN)
-+		loginfo->qthreshold = EBT_ULOG_MAX_QLEN;
-+
-+	return 0;
-+}
-+
-+static struct ebt_watcher ulog = {
-+	{NULL, NULL}, EBT_ULOG_WATCHER, ebt_ulog, ebt_ulog_check, NULL,
-+	THIS_MODULE
-+};
-+
-+static int __init init(void)
-+{
-+	int i, ret = 0;
-+
-+	if (nlbufsiz >= 128*1024) {
-+		printk(KERN_NOTICE "ebt_ulog: Netlink buffer has to be <= 128kB,"
-+		       " please try a smaller nlbufsiz parameter.\n");
-+		return -EINVAL;
-+	}
-+
-+	/* initialize ulog_buffers */
-+	for (i = 0; i < EBT_ULOG_MAXNLGROUPS; i++) {
-+		init_timer(&ulog_buffers[i].timer);
-+		ulog_buffers[i].timer.function = ulog_timer;
-+		ulog_buffers[i].timer.data = i;
-+		ulog_buffers[i].lock = SPIN_LOCK_UNLOCKED;
-+	}
-+
-+	ebtlognl = netlink_kernel_create(NETLINK_NFLOG, NULL);
-+	if (!ebtlognl)
-+		ret = -ENOMEM;
-+	else if ((ret = ebt_register_watcher(&ulog)))
-+		sock_release(ebtlognl->socket);
-+
-+	return ret;
-+}
-+
-+static void __exit fini(void)
-+{
-+	ebt_ulog_buff_t *ub;
-+	int i;
-+
-+	ebt_unregister_watcher(&ulog);
-+	for (i = 0; i < EBT_ULOG_MAXNLGROUPS; i++) {
-+		ub = &ulog_buffers[i];
-+		if (timer_pending(&ub->timer))
-+			del_timer(&ub->timer);
-+		spin_lock_bh(&ub->lock);
-+		if (ub->skb) {
-+			kfree_skb(ub->skb);
-+			ub->skb = NULL;
-+		}
-+		spin_unlock_bh(&ub->lock);
-+	}
-+	sock_release(ebtlognl->socket);
-+}
-+
-+module_init(init);
-+module_exit(fini);
-+MODULE_LICENSE("GPL");
-+MODULE_AUTHOR("Bart De Schuymer <bdschuym@pandora.be>");
-+MODULE_DESCRIPTION("ebtables userspace logging module for bridged Ethernet"
-+                   " frames");
---- /dev/null	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/netfilter/ebt_snat.c	2005-09-15 16:57:23.000000000 +0000
-@@ -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	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/netfilter/ebt_dnat.c	2005-09-15 16:57:23.000000000 +0000
-@@ -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	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/netfilter/ebtables.c	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,1497 @@
-+/*
-+ *  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, unsigned int hooknr, const struct net_device *in,
-+   const struct net_device *out)
-+{
-+	w->u.watcher->watcher(skb, hooknr, 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)
-+{
-+	int i = 0;
-+	char *devname = device->name;
-+
-+	if (*entry == '\0')
-+		return 0;
-+	if (!device)
-+		return 1;
-+	/* 1 is the wildcard token */
-+	while (entry[i] != '\0' && entry[i] != 1 && entry[i] == devname[i])
-+		i++;
-+	return (devname[i] != entry[i] && entry[i] != 1);
-+}
-+
-+#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;
-+
-+	read_lock_bh(&table->lock);
-+	private = table->private;
-+	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, hook, 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(&table->lock);
-+			return NF_ACCEPT;
-+		}
-+		if (verdict == EBT_DROP) {
-+			read_unlock_bh(&table->lock);
-+			return NF_DROP;
-+		}
-+		if (verdict == EBT_RETURN) {
-+letsreturn:
-+#ifdef CONFIG_NETFILTER_DEBUG
-+			if (sp == 0) {
-+				BUGPRINT("RETURN on base chain");
-+				// act like this is EBT_CONTINUE
-+				goto letscontinue;
-+			}
-+#endif
-+			sp--;
-+			// put all the local variables right
-+			i = cs[sp].n;
-+			chaininfo = cs[sp].chaininfo;
-+			nentries = chaininfo->nentries;
-+			point = cs[sp].e;
-+			counter_base = cb_base +
-+			   chaininfo->counter_offset;
-+			continue;
-+		}
-+		if (verdict == EBT_CONTINUE)
-+			goto letscontinue;
-+#ifdef CONFIG_NETFILTER_DEBUG
-+		if (verdict < 0) {
-+			BUGPRINT("bogus standard verdict\n");
-+			read_unlock_bh(&table->lock);
-+			return NF_DROP;
-+		}
-+#endif
-+		// jump to a udc
-+		cs[sp].n = i + 1;
-+		cs[sp].chaininfo = chaininfo;
-+		cs[sp].e = (struct ebt_entry *)
-+		   (((char *)point) + point->next_offset);
-+		i = 0;
-+		chaininfo = (struct ebt_entries *) (base + verdict);
-+#ifdef CONFIG_NETFILTER_DEBUG
-+		if (chaininfo->distinguisher) {
-+			BUGPRINT("jump to non-chain\n");
-+			read_unlock_bh(&table->lock);
-+			return NF_DROP;
-+		}
-+#endif
-+		nentries = chaininfo->nentries;
-+		point = (struct ebt_entry *)chaininfo->data;
-+		counter_base = cb_base + chaininfo->counter_offset;
-+		sp++;
-+		continue;
-+letscontinue:
-+		point = (struct ebt_entry *)
-+		   (((char *)point) + point->next_offset);
-+		i++;
-+	}
-+
-+	// I actually like this :)
-+	if (chaininfo->policy == EBT_RETURN)
-+		goto letsreturn;
-+	if (chaininfo->policy == EBT_ACCEPT) {
-+		read_unlock_bh(&table->lock);
-+		return NF_ACCEPT;
-+	}
-+	read_unlock_bh(&table->lock);
-+	return NF_DROP;
-+}
-+
-+// If it succeeds, returns element and locks mutex
-+static inline void *
-+find_inlist_lock_noload(struct list_head *head, const char *name, int *error,
-+   struct semaphore *mutex)
-+{
-+	void *ret;
-+
-+	*error = down_interruptible(mutex);
-+	if (*error != 0)
-+		return NULL;
-+
-+	ret = list_named_find(head, name);
-+	if (!ret) {
-+		*error = -ENOENT;
-+		up(mutex);
-+	}
-+	return ret;
-+}
-+
-+#ifndef CONFIG_KMOD
-+#define find_inlist_lock(h,n,p,e,m) find_inlist_lock_noload((h),(n),(e),(m))
-+#else
-+static void *
-+find_inlist_lock(struct list_head *head, const char *name, const char *prefix,
-+   int *error, struct semaphore *mutex)
-+{
-+	void *ret;
-+
-+	ret = find_inlist_lock_noload(head, name, error, mutex);
-+	if (!ret) {
-+		char modulename[EBT_FUNCTION_MAXNAMELEN + strlen(prefix) + 1];
-+		strcpy(modulename, prefix);
-+		strcat(modulename, name);
-+		request_module(modulename);
-+		ret = find_inlist_lock_noload(head, name, error, mutex);
-+	}
-+	return ret;
-+}
-+#endif
-+
-+static inline struct ebt_table *
-+find_table_lock(const char *name, int *error, struct semaphore *mutex)
-+{
-+	return find_inlist_lock(&ebt_tables, name, "ebtable_", error, mutex);
-+}
-+
-+static inline struct ebt_match *
-+find_match_lock(const char *name, int *error, struct semaphore *mutex)
-+{
-+	return find_inlist_lock(&ebt_matches, name, "ebt_", error, mutex);
-+}
-+
-+static inline struct ebt_watcher *
-+find_watcher_lock(const char *name, int *error, struct semaphore *mutex)
-+{
-+	return find_inlist_lock(&ebt_watchers, name, "ebt_", error, mutex);
-+}
-+
-+static inline struct ebt_target *
-+find_target_lock(const char *name, int *error, struct semaphore *mutex)
-+{
-+	return find_inlist_lock(&ebt_targets, name, "ebt_", error, mutex);
-+}
-+
-+static inline int
-+ebt_check_match(struct ebt_entry_match *m, struct ebt_entry *e,
-+   const char *name, unsigned int hookmask, unsigned int *cnt)
-+{
-+	struct ebt_match *match;
-+	int ret;
-+
-+	if (((char *)m) + m->match_size + sizeof(struct ebt_entry_match) >
-+	   ((char *)e) + e->watchers_offset)
-+		return -EINVAL;
-+	match = find_match_lock(m->u.name, &ret, &ebt_mutex);
-+	if (!match)
-+		return ret;
-+	m->u.match = match;
-+	if (match->me)
-+		__MOD_INC_USE_COUNT(match->me);
-+	up(&ebt_mutex);
-+	if (match->check &&
-+	   match->check(name, hookmask, e, m->data, m->match_size) != 0) {
-+		BUGPRINT("match->check failed\n");
-+		if (match->me)
-+			__MOD_DEC_USE_COUNT(match->me);
-+		return -EINVAL;
-+	}
-+	(*cnt)++;
-+	return 0;
-+}
-+
-+static inline int
-+ebt_check_watcher(struct ebt_entry_watcher *w, struct ebt_entry *e,
-+   const char *name, unsigned int hookmask, unsigned int *cnt)
-+{
-+	struct ebt_watcher *watcher;
-+	int ret;
-+
-+	if (((char *)w) + w->watcher_size + sizeof(struct ebt_entry_watcher) >
-+	   ((char *)e) + e->target_offset)
-+		return -EINVAL;
-+	watcher = find_watcher_lock(w->u.name, &ret, &ebt_mutex);
-+	if (!watcher)
-+		return ret;
-+	w->u.watcher = watcher;
-+	if (watcher->me)
-+		__MOD_INC_USE_COUNT(watcher->me);
-+	up(&ebt_mutex);
-+	if (watcher->check &&
-+	   watcher->check(name, hookmask, e, w->data, w->watcher_size) != 0) {
-+		BUGPRINT("watcher->check failed\n");
-+		if (watcher->me)
-+			__MOD_DEC_USE_COUNT(watcher->me);
-+		return -EINVAL;
-+	}
-+	(*cnt)++;
-+	return 0;
-+}
-+
-+// this one is very careful, as it is the first function
-+// to parse the userspace data
-+static inline int
-+ebt_check_entry_size_and_hooks(struct ebt_entry *e,
-+   struct ebt_table_info *newinfo, char *base, char *limit,
-+   struct ebt_entries **hook_entries, unsigned int *n, unsigned int *cnt,
-+   unsigned int *totalcnt, unsigned int *udc_cnt, unsigned int valid_hooks)
-+{
-+	int i;
-+
-+	for (i = 0; i < NF_BR_NUMHOOKS; i++) {
-+		if ((valid_hooks & (1 << i)) == 0)
-+			continue;
-+		if ( (char *)hook_entries[i] - base ==
-+		   (char *)e - newinfo->entries)
-+			break;
-+	}
-+	// beginning of a new chain
-+	// if i == NF_BR_NUMHOOKS it must be a user defined chain
-+	if (i != NF_BR_NUMHOOKS || !(e->bitmask & EBT_ENTRY_OR_ENTRIES)) {
-+		if ((e->bitmask & EBT_ENTRY_OR_ENTRIES) != 0) {
-+			// we make userspace set this right,
-+			// so there is no misunderstanding
-+			BUGPRINT("EBT_ENTRY_OR_ENTRIES shouldn't be set "
-+			         "in distinguisher\n");
-+			return -EINVAL;
-+		}
-+		// this checks if the previous chain has as many entries
-+		// as it said it has
-+		if (*n != *cnt) {
-+			BUGPRINT("nentries does not equal the nr of entries "
-+		                 "in the chain\n");
-+			return -EINVAL;
-+		}
-+		// before we look at the struct, be sure it is not too big
-+		if ((char *)hook_entries[i] + sizeof(struct ebt_entries)
-+		   > limit) {
-+			BUGPRINT("entries_size too small\n");
-+			return -EINVAL;
-+		}
-+		if (((struct ebt_entries *)e)->policy != EBT_DROP &&
-+		   ((struct ebt_entries *)e)->policy != EBT_ACCEPT) {
-+			// only RETURN from udc
-+			if (i != NF_BR_NUMHOOKS ||
-+			   ((struct ebt_entries *)e)->policy != EBT_RETURN) {
-+				BUGPRINT("bad policy\n");
-+				return -EINVAL;
-+			}
-+		}
-+		if (i == NF_BR_NUMHOOKS) // it's a user defined chain
-+			(*udc_cnt)++;
-+		else
-+			newinfo->hook_entry[i] = (struct ebt_entries *)e;
-+		if (((struct ebt_entries *)e)->counter_offset != *totalcnt) {
-+			BUGPRINT("counter_offset != totalcnt");
-+			return -EINVAL;
-+		}
-+		*n = ((struct ebt_entries *)e)->nentries;
-+		*cnt = 0;
-+		return 0;
-+	}
-+	// a plain old entry, heh
-+	if (sizeof(struct ebt_entry) > e->watchers_offset ||
-+	   e->watchers_offset > e->target_offset ||
-+	   e->target_offset >= e->next_offset) {
-+		BUGPRINT("entry offsets not in right order\n");
-+		return -EINVAL;
-+	}
-+	// this is not checked anywhere else
-+	if (e->next_offset - e->target_offset < sizeof(struct ebt_entry_target)) {
-+		BUGPRINT("target size too small\n");
-+		return -EINVAL;
-+	}
-+
-+	(*cnt)++;
-+	(*totalcnt)++;
-+	return 0;
-+}
-+
-+struct ebt_cl_stack
-+{
-+	struct ebt_chainstack cs;
-+	int from;
-+	unsigned int hookmask;
-+};
-+
-+// we need these positions to check that the jumps to a different part of the
-+// entries is a jump to the beginning of a new chain.
-+static inline int
-+ebt_get_udc_positions(struct ebt_entry *e, struct ebt_table_info *newinfo,
-+   struct ebt_entries **hook_entries, unsigned int *n, unsigned int valid_hooks,
-+   struct ebt_cl_stack *udc)
-+{
-+	int i;
-+
-+	// we're only interested in chain starts
-+	if (e->bitmask & EBT_ENTRY_OR_ENTRIES)
-+		return 0;
-+	for (i = 0; i < NF_BR_NUMHOOKS; i++) {
-+		if ((valid_hooks & (1 << i)) == 0)
-+			continue;
-+		if (newinfo->hook_entry[i] == (struct ebt_entries *)e)
-+			break;
-+	}
-+	// only care about udc
-+	if (i != NF_BR_NUMHOOKS)
-+		return 0;
-+
-+	udc[*n].cs.chaininfo = (struct ebt_entries *)e;
-+	// these initialisations are depended on later in check_chainloops()
-+	udc[*n].cs.n = 0;
-+	udc[*n].hookmask = 0;
-+
-+	(*n)++;
-+	return 0;
-+}
-+
-+static inline int
-+ebt_cleanup_match(struct ebt_entry_match *m, unsigned int *i)
-+{
-+	if (i && (*i)-- == 0)
-+		return 1;
-+	if (m->u.match->destroy)
-+		m->u.match->destroy(m->data, m->match_size);
-+	if (m->u.match->me)
-+		__MOD_DEC_USE_COUNT(m->u.match->me);
-+
-+	return 0;
-+}
-+
-+static inline int
-+ebt_cleanup_watcher(struct ebt_entry_watcher *w, unsigned int *i)
-+{
-+	if (i && (*i)-- == 0)
-+		return 1;
-+	if (w->u.watcher->destroy)
-+		w->u.watcher->destroy(w->data, w->watcher_size);
-+	if (w->u.watcher->me)
-+		__MOD_DEC_USE_COUNT(w->u.watcher->me);
-+
-+	return 0;
-+}
-+
-+static inline int
-+ebt_cleanup_entry(struct ebt_entry *e, unsigned int *cnt)
-+{
-+	struct ebt_entry_target *t;
-+
-+	if ((e->bitmask & EBT_ENTRY_OR_ENTRIES) == 0)
-+		return 0;
-+	// we're done
-+	if (cnt && (*cnt)-- == 0)
-+		return 1;
-+	EBT_WATCHER_ITERATE(e, ebt_cleanup_watcher, NULL);
-+	EBT_MATCH_ITERATE(e, ebt_cleanup_match, NULL);
-+	t = (struct ebt_entry_target *)(((char *)e) + e->target_offset);
-+	if (t->u.target->destroy)
-+		t->u.target->destroy(t->data, t->target_size);
-+	if (t->u.target->me)
-+		__MOD_DEC_USE_COUNT(t->u.target->me);
-+
-+	return 0;
-+}
-+
-+static inline int
-+ebt_check_entry(struct ebt_entry *e, struct ebt_table_info *newinfo,
-+   const char *name, unsigned int *cnt, unsigned int valid_hooks,
-+   struct ebt_cl_stack *cl_s, unsigned int udc_cnt)
-+{
-+	struct ebt_entry_target *t;
-+	struct ebt_target *target;
-+	unsigned int i, j, hook = 0, hookmask = 0;
-+	int ret;
-+
-+	// Don't mess with the struct ebt_entries
-+	if ((e->bitmask & EBT_ENTRY_OR_ENTRIES) == 0)
-+		return 0;
-+
-+	if (e->bitmask & ~EBT_F_MASK) {
-+		BUGPRINT("Unknown flag for bitmask\n");
-+		return -EINVAL;
-+	}
-+	if (e->invflags & ~EBT_INV_MASK) {
-+		BUGPRINT("Unknown flag for inv bitmask\n");
-+		return -EINVAL;
-+	}
-+	if ( (e->bitmask & EBT_NOPROTO) && (e->bitmask & EBT_802_3) ) {
-+		BUGPRINT("NOPROTO & 802_3 not allowed\n");
-+		return -EINVAL;
-+	}
-+	// what hook do we belong to?
-+	for (i = 0; i < NF_BR_NUMHOOKS; i++) {
-+		if ((valid_hooks & (1 << i)) == 0)
-+			continue;
-+		if ((char *)newinfo->hook_entry[i] < (char *)e)
-+			hook = i;
-+		else
-+			break;
-+	}
-+	// (1 << NF_BR_NUMHOOKS) tells the check functions the rule is on
-+	// a base chain
-+	if (i < NF_BR_NUMHOOKS)
-+		hookmask = (1 << hook) | (1 << NF_BR_NUMHOOKS);
-+	else {
-+		for (i = 0; i < udc_cnt; i++)
-+			if ((char *)(cl_s[i].cs.chaininfo) > (char *)e)
-+				break;
-+		if (i == 0)
-+			hookmask = (1 << hook) | (1 << NF_BR_NUMHOOKS);
-+		else
-+			hookmask = cl_s[i - 1].hookmask;
-+	}
-+	i = 0;
-+	ret = EBT_MATCH_ITERATE(e, ebt_check_match, e, name, hookmask, &i);
-+	if (ret != 0)
-+		goto cleanup_matches;
-+	j = 0;
-+	ret = EBT_WATCHER_ITERATE(e, ebt_check_watcher, e, name, hookmask, &j);
-+	if (ret != 0)
-+		goto cleanup_watchers;
-+	t = (struct ebt_entry_target *)(((char *)e) + e->target_offset);
-+	target = find_target_lock(t->u.name, &ret, &ebt_mutex);
-+	if (!target)
-+		goto cleanup_watchers;
-+	if (target->me)
-+		__MOD_INC_USE_COUNT(target->me);
-+	up(&ebt_mutex);
-+
-+	t->u.target = target;
-+	if (t->u.target == &ebt_standard_target) {
-+		if (e->target_offset + sizeof(struct ebt_standard_target) >
-+		   e->next_offset) {
-+			BUGPRINT("Standard target size too big\n");
-+			ret = -EFAULT;
-+			goto cleanup_watchers;
-+		}
-+		if (((struct ebt_standard_target *)t)->verdict <
-+		   -NUM_STANDARD_TARGETS) {
-+			BUGPRINT("Invalid standard target\n");
-+			ret = -EFAULT;
-+			goto cleanup_watchers;
-+		}
-+	} else if ((e->target_offset + t->target_size +
-+	   sizeof(struct ebt_entry_target) > e->next_offset) ||
-+	   (t->u.target->check &&
-+	   t->u.target->check(name, hookmask, e, t->data, t->target_size) != 0)){
-+		if (t->u.target->me)
-+			__MOD_DEC_USE_COUNT(t->u.target->me);
-+		ret = -EFAULT;
-+		goto cleanup_watchers;
-+	}
-+	(*cnt)++;
-+	return 0;
-+cleanup_watchers:
-+	EBT_WATCHER_ITERATE(e, ebt_cleanup_watcher, &j);
-+cleanup_matches:
-+	EBT_MATCH_ITERATE(e, ebt_cleanup_match, &i);
-+	return ret;
-+}
-+
-+// checks for loops and sets the hook mask for udc
-+// the hook mask for udc tells us from which base chains the udc can be
-+// accessed. This mask is a parameter to the check() functions of the extensions
-+static int check_chainloops(struct ebt_entries *chain,
-+   struct ebt_cl_stack *cl_s, unsigned int udc_cnt, 
-+   unsigned int hooknr, char *base)
-+{
-+	int i, chain_nr = -1, pos = 0, nentries = chain->nentries, verdict;
-+	struct ebt_entry *e = (struct ebt_entry *)chain->data;
-+	struct ebt_entry_target *t;
-+
-+	while (pos < nentries || chain_nr != -1) {
-+		// end of udc, go back one 'recursion' step
-+		if (pos == nentries) {
-+			// put back values of the time when this chain was called
-+			e = cl_s[chain_nr].cs.e;
-+			if (cl_s[chain_nr].from != -1)
-+				nentries =
-+				cl_s[cl_s[chain_nr].from].cs.chaininfo->nentries;
-+			else
-+				nentries = chain->nentries;
-+			pos = cl_s[chain_nr].cs.n;
-+			// make sure we won't see a loop that isn't one
-+			cl_s[chain_nr].cs.n = 0;
-+			chain_nr = cl_s[chain_nr].from;
-+			if (pos == nentries)
-+				continue;
-+		}
-+		t = (struct ebt_entry_target *)
-+		   (((char *)e) + e->target_offset);
-+		if (strcmp(t->u.name, EBT_STANDARD_TARGET))
-+			goto letscontinue;
-+		if (e->target_offset + sizeof(struct ebt_standard_target) >
-+		   e->next_offset) {
-+			BUGPRINT("Standard target size too big\n");
-+			return -1;
-+		}
-+		verdict = ((struct ebt_standard_target *)t)->verdict;
-+		if (verdict >= 0) { // jump to another chain
-+			struct ebt_entries *hlp2 =
-+			   (struct ebt_entries *)(base + verdict);
-+			for (i = 0; i < udc_cnt; i++)
-+				if (hlp2 == cl_s[i].cs.chaininfo)
-+					break;
-+			// bad destination or loop
-+			if (i == udc_cnt) {
-+				BUGPRINT("bad destination\n");
-+				return -1;
-+			}
-+			if (cl_s[i].cs.n) {
-+				BUGPRINT("loop\n");
-+				return -1;
-+			}
-+			// this can't be 0, so the above test is correct
-+			cl_s[i].cs.n = pos + 1;
-+			pos = 0;
-+			cl_s[i].cs.e = ((void *)e + e->next_offset);
-+			e = (struct ebt_entry *)(hlp2->data);
-+			nentries = hlp2->nentries;
-+			cl_s[i].from = chain_nr;
-+			chain_nr = i;
-+			// this udc is accessible from the base chain for hooknr
-+			cl_s[i].hookmask |= (1 << hooknr);
-+			continue;
-+		}
-+letscontinue:
-+		e = (void *)e + e->next_offset;
-+		pos++;
-+	}
-+	return 0;
-+}
-+
-+// do the parsing of the table/chains/entries/matches/watchers/targets, heh
-+static int translate_table(struct ebt_replace *repl,
-+   struct ebt_table_info *newinfo)
-+{
-+	unsigned int i, j, k, udc_cnt;
-+	int ret;
-+	struct ebt_cl_stack *cl_s = NULL; // used in the checking for chain loops
-+
-+	i = 0;
-+	while (i < NF_BR_NUMHOOKS && !(repl->valid_hooks & (1 << i)))
-+		i++;
-+	if (i == NF_BR_NUMHOOKS) {
-+		BUGPRINT("No valid hooks specified\n");
-+		return -EINVAL;
-+	}
-+	if (repl->hook_entry[i] != (struct ebt_entries *)repl->entries) {
-+		BUGPRINT("Chains don't start at beginning\n");
-+		return -EINVAL;
-+	}
-+	// make sure chains are ordered after each other in same order
-+	// as their corresponding hooks
-+	for (j = i + 1; j < NF_BR_NUMHOOKS; j++) {
-+		if (!(repl->valid_hooks & (1 << j)))
-+			continue;
-+		if ( repl->hook_entry[j] <= repl->hook_entry[i] ) {
-+			BUGPRINT("Hook order must be followed\n");
-+			return -EINVAL;
-+		}
-+		i = j;
-+	}
-+
-+	for (i = 0; i < NF_BR_NUMHOOKS; i++)
-+		newinfo->hook_entry[i] = NULL;
-+
-+	newinfo->entries_size = repl->entries_size;
-+	newinfo->nentries = repl->nentries;
-+
-+	// do some early checkings and initialize some things
-+	i = 0; // holds the expected nr. of entries for the chain
-+	j = 0; // holds the up to now counted entries for the chain
-+	k = 0; // holds the total nr. of entries, should equal
-+	       // newinfo->nentries afterwards
-+	udc_cnt = 0; // will hold the nr. of user defined chains (udc)
-+	ret = EBT_ENTRY_ITERATE(newinfo->entries, newinfo->entries_size,
-+	   ebt_check_entry_size_and_hooks, newinfo, repl->entries,
-+	   repl->entries + repl->entries_size, repl->hook_entry, &i, &j, &k,
-+	   &udc_cnt, repl->valid_hooks);
-+
-+	if (ret != 0)
-+		return ret;
-+
-+	if (i != j) {
-+		BUGPRINT("nentries does not equal the nr of entries in the "
-+		         "(last) chain\n");
-+		return -EINVAL;
-+	}
-+	if (k != newinfo->nentries) {
-+		BUGPRINT("Total nentries is wrong\n");
-+		return -EINVAL;
-+	}
-+
-+	// check if all valid hooks have a chain
-+	for (i = 0; i < NF_BR_NUMHOOKS; i++) {
-+		if (newinfo->hook_entry[i] == NULL &&
-+		   (repl->valid_hooks & (1 << i))) {
-+			BUGPRINT("Valid hook without chain\n");
-+			return -EINVAL;
-+		}
-+	}
-+
-+	// Get the location of the udc, put them in an array
-+	// While we're at it, allocate the chainstack
-+	if (udc_cnt) {
-+		// this will get free'd in do_replace()/ebt_register_table()
-+		// if an error occurs
-+		newinfo->chainstack = (struct ebt_chainstack **)
-+		   vmalloc(smp_num_cpus * sizeof(struct ebt_chainstack));
-+		if (!newinfo->chainstack)
-+			return -ENOMEM;
-+		for (i = 0; i < smp_num_cpus; i++) {
-+			newinfo->chainstack[i] =
-+			   vmalloc(udc_cnt * sizeof(struct ebt_chainstack));
-+			if (!newinfo->chainstack[i]) {
-+				while (i)
-+					vfree(newinfo->chainstack[--i]);
-+				vfree(newinfo->chainstack);
-+				newinfo->chainstack = NULL;
-+				return -ENOMEM;
-+			}
-+		}
-+
-+		cl_s = (struct ebt_cl_stack *)
-+		   vmalloc(udc_cnt * sizeof(struct ebt_cl_stack));
-+		if (!cl_s)
-+			return -ENOMEM;
-+		i = 0; // the i'th udc
-+		EBT_ENTRY_ITERATE(newinfo->entries, newinfo->entries_size,
-+		   ebt_get_udc_positions, newinfo, repl->hook_entry, &i,
-+		   repl->valid_hooks, cl_s);
-+		// sanity check
-+		if (i != udc_cnt) {
-+			BUGPRINT("i != udc_cnt\n");
-+			vfree(cl_s);
-+			return -EFAULT;
-+		}
-+	}
-+
-+	// Check for loops
-+	for (i = 0; i < NF_BR_NUMHOOKS; i++)
-+		if (repl->valid_hooks & (1 << i))
-+			if (check_chainloops(newinfo->hook_entry[i],
-+			   cl_s, udc_cnt, i, newinfo->entries)) {
-+				if (cl_s)
-+					vfree(cl_s);
-+				return -EINVAL;
-+			}
-+
-+	// we now know the following (along with E=mc):
-+	// - the nr of entries in each chain is right
-+	// - the size of the allocated space is right
-+	// - all valid hooks have a corresponding chain
-+	// - there are no loops
-+	// - wrong data can still be on the level of a single entry
-+	// - could be there are jumps to places that are not the
-+	//   beginning of a chain. This can only occur in chains that
-+	//   are not accessible from any base chains, so we don't care.
-+
-+	// used to know what we need to clean up if something goes wrong
-+	i = 0;
-+	ret = EBT_ENTRY_ITERATE(newinfo->entries, newinfo->entries_size,
-+	   ebt_check_entry, newinfo, repl->name, &i, repl->valid_hooks,
-+	   cl_s, udc_cnt);
-+	if (ret != 0) {
-+		EBT_ENTRY_ITERATE(newinfo->entries, newinfo->entries_size,
-+		   ebt_cleanup_entry, &i);
-+	}
-+	if (cl_s)
-+		vfree(cl_s);
-+	return ret;
-+}
-+
-+// called under write_lock
-+static void get_counters(struct ebt_counter *oldcounters,
-+   struct ebt_counter *counters, unsigned int nentries)
-+{
-+	int i, cpu;
-+	struct ebt_counter *counter_base;
-+
-+	// counters of cpu 0
-+	memcpy(counters, oldcounters,
-+	   sizeof(struct ebt_counter) * nentries);
-+	// add other counters to those of cpu 0
-+	for (cpu = 1; cpu < smp_num_cpus; cpu++) {
-+		counter_base = COUNTER_BASE(oldcounters, nentries, cpu);
-+		for (i = 0; i < nentries; i++) {
-+			counters[i].pcnt += counter_base[i].pcnt;
-+			counters[i].bcnt += counter_base[i].bcnt;
-+		}
-+	}
-+}
-+
-+// replace the table
-+static int do_replace(void *user, unsigned int len)
-+{
-+	int ret, i, countersize;
-+	struct ebt_table_info *newinfo;
-+	struct ebt_replace tmp;
-+	struct ebt_table *t;
-+	struct ebt_counter *counterstmp = NULL;
-+	// used to be able to unlock earlier
-+	struct ebt_table_info *table;
-+
-+	if (copy_from_user(&tmp, user, sizeof(tmp)) != 0)
-+		return -EFAULT;
-+
-+	if (len != sizeof(tmp) + tmp.entries_size) {
-+		BUGPRINT("Wrong len argument\n");
-+		return -EINVAL;
-+	}
-+
-+	if (tmp.entries_size == 0) {
-+		BUGPRINT("Entries_size never zero\n");
-+		return -EINVAL;
-+	}
-+	countersize = COUNTER_OFFSET(tmp.nentries) * smp_num_cpus;
-+	newinfo = (struct ebt_table_info *)
-+	   vmalloc(sizeof(struct ebt_table_info) + countersize);
-+	if (!newinfo)
-+		return -ENOMEM;
-+
-+	if (countersize)
-+		memset(newinfo->counters, 0, countersize);
-+
-+	newinfo->entries = (char *)vmalloc(tmp.entries_size);
-+	if (!newinfo->entries) {
-+		ret = -ENOMEM;
-+		goto free_newinfo;
-+	}
-+	if (copy_from_user(
-+	   newinfo->entries, tmp.entries, tmp.entries_size) != 0) {
-+		BUGPRINT("Couldn't copy entries from userspace\n");
-+		ret = -EFAULT;
-+		goto free_entries;
-+	}
-+
-+	// the user wants counters back
-+	// the check on the size is done later, when we have the lock
-+	if (tmp.num_counters) {
-+		counterstmp = (struct ebt_counter *)
-+		   vmalloc(tmp.num_counters * sizeof(struct ebt_counter));
-+		if (!counterstmp) {
-+			ret = -ENOMEM;
-+			goto free_entries;
-+		}
-+	}
-+	else
-+		counterstmp = NULL;
-+
-+	// this can get initialized by translate_table()
-+	newinfo->chainstack = NULL;
-+	ret = translate_table(&tmp, newinfo);
-+
-+	if (ret != 0)
-+		goto free_counterstmp;
-+
-+	t = find_table_lock(tmp.name, &ret, &ebt_mutex);
-+	if (!t)
-+		goto free_iterate;
-+
-+	// the table doesn't like it
-+	if (t->check && (ret = t->check(newinfo, tmp.valid_hooks)))
-+		goto free_unlock;
-+
-+	if (tmp.num_counters && tmp.num_counters != t->private->nentries) {
-+		BUGPRINT("Wrong nr. of counters requested\n");
-+		ret = -EINVAL;
-+		goto free_unlock;
-+	}
-+
-+	// we have the mutex lock, so no danger in reading this pointer
-+	table = t->private;
-+	// we need an atomic snapshot of the counters
-+	write_lock_bh(&t->lock);
-+	if (tmp.num_counters)
-+		get_counters(t->private->counters, counterstmp,
-+		   t->private->nentries);
-+
-+	t->private = newinfo;
-+	write_unlock_bh(&t->lock);
-+	up(&ebt_mutex);
-+	// So, a user can change the chains while having messed up her counter
-+	// allocation. Only reason why this is done is because this way the lock
-+	// is held only once, while this doesn't bring the kernel into a
-+	// dangerous state.
-+	if (tmp.num_counters &&
-+	   copy_to_user(tmp.counters, counterstmp,
-+	   tmp.num_counters * sizeof(struct ebt_counter))) {
-+		BUGPRINT("Couldn't copy counters to userspace\n");
-+		ret = -EFAULT;
-+	}
-+	else
-+		ret = 0;
-+
-+	// decrease module count and free resources
-+	EBT_ENTRY_ITERATE(table->entries, table->entries_size,
-+	   ebt_cleanup_entry, NULL);
-+
-+	vfree(table->entries);
-+	if (table->chainstack) {
-+		for (i = 0; i < smp_num_cpus; i++)
-+			vfree(table->chainstack[i]);
-+		vfree(table->chainstack);
-+	}
-+	vfree(table);
-+
-+	if (counterstmp)
-+		vfree(counterstmp);
-+	return ret;
-+
-+free_unlock:
-+	up(&ebt_mutex);
-+free_iterate:
-+	EBT_ENTRY_ITERATE(newinfo->entries, newinfo->entries_size,
-+	   ebt_cleanup_entry, NULL);
-+free_counterstmp:
-+	if (counterstmp)
-+		vfree(counterstmp);
-+	// can be initialized in translate_table()
-+	if (newinfo->chainstack) {
-+		for (i = 0; i < smp_num_cpus; i++)
-+			vfree(newinfo->chainstack[i]);
-+		vfree(newinfo->chainstack);
-+	}
-+free_entries:
-+	if (newinfo->entries)
-+		vfree(newinfo->entries);
-+free_newinfo:
-+	if (newinfo)
-+		vfree(newinfo);
-+	return ret;
-+}
-+
-+int ebt_register_target(struct ebt_target *target)
-+{
-+	int ret;
-+
-+	ret = down_interruptible(&ebt_mutex);
-+	if (ret != 0)
-+		return ret;
-+	if (!list_named_insert(&ebt_targets, target)) {
-+		up(&ebt_mutex);
-+		return -EEXIST;
-+	}
-+	up(&ebt_mutex);
-+	MOD_INC_USE_COUNT;
-+
-+	return 0;
-+}
-+
-+void ebt_unregister_target(struct ebt_target *target)
-+{
-+	down(&ebt_mutex);
-+	LIST_DELETE(&ebt_targets, target);
-+	up(&ebt_mutex);
-+	MOD_DEC_USE_COUNT;
-+}
-+
-+int ebt_register_match(struct ebt_match *match)
-+{
-+	int ret;
-+
-+	ret = down_interruptible(&ebt_mutex);
-+	if (ret != 0)
-+		return ret;
-+	if (!list_named_insert(&ebt_matches, match)) {
-+		up(&ebt_mutex);
-+		return -EEXIST;
-+	}
-+	up(&ebt_mutex);
-+	MOD_INC_USE_COUNT;
-+
-+	return 0;
-+}
-+
-+void ebt_unregister_match(struct ebt_match *match)
-+{
-+	down(&ebt_mutex);
-+	LIST_DELETE(&ebt_matches, match);
-+	up(&ebt_mutex);
-+	MOD_DEC_USE_COUNT;
-+}
-+
-+int ebt_register_watcher(struct ebt_watcher *watcher)
-+{
-+	int ret;
-+
-+	ret = down_interruptible(&ebt_mutex);
-+	if (ret != 0)
-+		return ret;
-+	if (!list_named_insert(&ebt_watchers, watcher)) {
-+		up(&ebt_mutex);
-+		return -EEXIST;
-+	}
-+	up(&ebt_mutex);
-+	MOD_INC_USE_COUNT;
-+
-+	return 0;
-+}
-+
-+void ebt_unregister_watcher(struct ebt_watcher *watcher)
-+{
-+	down(&ebt_mutex);
-+	LIST_DELETE(&ebt_watchers, watcher);
-+	up(&ebt_mutex);
-+	MOD_DEC_USE_COUNT;
-+}
-+
-+int ebt_register_table(struct ebt_table *table)
-+{
-+	struct ebt_table_info *newinfo;
-+	int ret, i, countersize;
-+
-+	if (!table || !table->table ||!table->table->entries ||
-+	    table->table->entries_size == 0 ||
-+	    table->table->counters || table->private) {
-+		BUGPRINT("Bad table data for ebt_register_table!!!\n");
-+		return -EINVAL;
-+	}
-+
-+	countersize = COUNTER_OFFSET(table->table->nentries) * smp_num_cpus;
-+	newinfo = (struct ebt_table_info *)
-+	   vmalloc(sizeof(struct ebt_table_info) + countersize);
-+	ret = -ENOMEM;
-+	if (!newinfo)
-+		return -ENOMEM;
-+
-+	newinfo->entries = (char *)vmalloc(table->table->entries_size);
-+	if (!(newinfo->entries))
-+		goto free_newinfo;
-+
-+	memcpy(newinfo->entries, table->table->entries,
-+	   table->table->entries_size);
-+
-+	if (countersize)
-+		memset(newinfo->counters, 0, countersize);
-+
-+	// fill in newinfo and parse the entries
-+	newinfo->chainstack = NULL;
-+	ret = translate_table(table->table, newinfo);
-+	if (ret != 0) {
-+		BUGPRINT("Translate_table failed\n");
-+		goto free_chainstack;
-+	}
-+
-+	if (table->check && table->check(newinfo, table->valid_hooks)) {
-+		BUGPRINT("The table doesn't like its own initial data, lol\n");
-+		return -EINVAL;
-+	}
-+
-+	table->private = newinfo;
-+	table->lock = RW_LOCK_UNLOCKED;
-+	ret = down_interruptible(&ebt_mutex);
-+	if (ret != 0)
-+		goto free_chainstack;
-+
-+	if (list_named_find(&ebt_tables, table->name)) {
-+		ret = -EEXIST;
-+		BUGPRINT("Table name already exists\n");
-+		goto free_unlock;
-+	}
-+
-+	list_prepend(&ebt_tables, table);
-+	up(&ebt_mutex);
-+	MOD_INC_USE_COUNT;
-+	return 0;
-+free_unlock:
-+	up(&ebt_mutex);
-+free_chainstack:
-+	if (newinfo->chainstack) {
-+		for (i = 0; i < smp_num_cpus; i++)
-+			vfree(newinfo->chainstack[i]);
-+		vfree(newinfo->chainstack);
-+	}
-+	vfree(newinfo->entries);
-+free_newinfo:
-+	vfree(newinfo);
-+	return ret;
-+}
-+
-+void ebt_unregister_table(struct ebt_table *table)
-+{
-+	int i;
-+
-+	if (!table) {
-+		BUGPRINT("Request to unregister NULL table!!!\n");
-+		return;
-+	}
-+	down(&ebt_mutex);
-+	LIST_DELETE(&ebt_tables, table);
-+	up(&ebt_mutex);
-+	EBT_ENTRY_ITERATE(table->private->entries,
-+	   table->private->entries_size, ebt_cleanup_entry, NULL);
-+	if (table->private->entries)
-+		vfree(table->private->entries);
-+	if (table->private->chainstack) {
-+		for (i = 0; i < smp_num_cpus; i++)
-+			vfree(table->private->chainstack[i]);
-+		vfree(table->private->chainstack);
-+	}
-+	vfree(table->private);
-+	MOD_DEC_USE_COUNT;
-+}
-+
-+// userspace just supplied us with counters
-+static int update_counters(void *user, unsigned int len)
-+{
-+	int i, ret;
-+	struct ebt_counter *tmp;
-+	struct ebt_replace hlp;
-+	struct ebt_table *t;
-+
-+	if (copy_from_user(&hlp, user, sizeof(hlp)))
-+		return -EFAULT;
-+
-+	if (len != sizeof(hlp) + hlp.num_counters * sizeof(struct ebt_counter))
-+		return -EINVAL;
-+	if (hlp.num_counters == 0)
-+		return -EINVAL;
-+
-+	if ( !(tmp = (struct ebt_counter *)
-+	   vmalloc(hlp.num_counters * sizeof(struct ebt_counter))) ){
-+		MEMPRINT("Update_counters && nomemory\n");
-+		return -ENOMEM;
-+	}
-+
-+	t = find_table_lock(hlp.name, &ret, &ebt_mutex);
-+	if (!t)
-+		goto free_tmp;
-+
-+	if (hlp.num_counters != t->private->nentries) {
-+		BUGPRINT("Wrong nr of counters\n");
-+		ret = -EINVAL;
-+		goto unlock_mutex;
-+	}
-+
-+	if ( copy_from_user(tmp, hlp.counters,
-+	   hlp.num_counters * sizeof(struct ebt_counter)) ) {
-+		BUGPRINT("Updata_counters && !cfu\n");
-+		ret = -EFAULT;
-+		goto unlock_mutex;
-+	}
-+
-+	// we want an atomic add of the counters
-+	write_lock_bh(&t->lock);
-+
-+	// we add to the counters of the first cpu
-+	for (i = 0; i < hlp.num_counters; i++) {
-+		t->private->counters[i].pcnt += tmp[i].pcnt;
-+		t->private->counters[i].bcnt += tmp[i].bcnt;
-+	}
-+
-+	write_unlock_bh(&t->lock);
-+	ret = 0;
-+unlock_mutex:
-+	up(&ebt_mutex);
-+free_tmp:
-+	vfree(tmp);
-+	return ret;
-+}
-+
-+static inline int ebt_make_matchname(struct ebt_entry_match *m,
-+   char *base, char *ubase)
-+{
-+	char *hlp = ubase - base + (char *)m;
-+	if (copy_to_user(hlp, m->u.match->name, EBT_FUNCTION_MAXNAMELEN))
-+		return -EFAULT;
-+	return 0;
-+}
-+
-+static inline int ebt_make_watchername(struct ebt_entry_watcher *w,
-+   char *base, char *ubase)
-+{
-+	char *hlp = ubase - base + (char *)w;
-+	if (copy_to_user(hlp , w->u.watcher->name, EBT_FUNCTION_MAXNAMELEN))
-+		return -EFAULT;
-+	return 0;
-+}
-+
-+static inline int ebt_make_names(struct ebt_entry *e, char *base, char *ubase)
-+{
-+	int ret;
-+	char *hlp;
-+	struct ebt_entry_target *t;
-+
-+	if ((e->bitmask & EBT_ENTRY_OR_ENTRIES) == 0)
-+		return 0;
-+
-+	hlp = ubase - base + (char *)e + e->target_offset;
-+	t = (struct ebt_entry_target *)(((char *)e) + e->target_offset);
-+	
-+	ret = EBT_MATCH_ITERATE(e, ebt_make_matchname, base, ubase);
-+	if (ret != 0)
-+		return ret;
-+	ret = EBT_WATCHER_ITERATE(e, ebt_make_watchername, base, ubase);
-+	if (ret != 0)
-+		return ret;
-+	if (copy_to_user(hlp, t->u.target->name, EBT_FUNCTION_MAXNAMELEN))
-+		return -EFAULT;
-+	return 0;
-+}
-+
-+// called with ebt_mutex down
-+static int copy_everything_to_user(struct ebt_table *t, void *user,
-+   int *len, int cmd)
-+{
-+	struct ebt_replace tmp;
-+	struct ebt_counter *counterstmp, *oldcounters;
-+	unsigned int entries_size, nentries;
-+	char *entries;
-+
-+	if (cmd == EBT_SO_GET_ENTRIES) {
-+		entries_size = t->private->entries_size;
-+		nentries = t->private->nentries;
-+		entries = t->private->entries;
-+		oldcounters = t->private->counters;
-+	} else {
-+		entries_size = t->table->entries_size;
-+		nentries = t->table->nentries;
-+		entries = t->table->entries;
-+		oldcounters = t->table->counters;
-+	}
-+
-+	if (copy_from_user(&tmp, user, sizeof(tmp))) {
-+		BUGPRINT("Cfu didn't work\n");
-+		return -EFAULT;
-+	}
-+
-+	if (*len != sizeof(struct ebt_replace) + entries_size +
-+	   (tmp.num_counters? nentries * sizeof(struct ebt_counter): 0)) {
-+		BUGPRINT("Wrong size\n");
-+		return -EINVAL;
-+	}
-+
-+	if (tmp.nentries != nentries) {
-+		BUGPRINT("Nentries wrong\n");
-+		return -EINVAL;
-+	}
-+
-+	if (tmp.entries_size != entries_size) {
-+		BUGPRINT("Wrong size\n");
-+		return -EINVAL;
-+	}
-+
-+	// userspace might not need the counters
-+	if (tmp.num_counters) {
-+		if (tmp.num_counters != nentries) {
-+			BUGPRINT("Num_counters wrong\n");
-+			return -EINVAL;
-+		}
-+		counterstmp = (struct ebt_counter *)
-+		   vmalloc(nentries * sizeof(struct ebt_counter));
-+		if (!counterstmp) {
-+			MEMPRINT("Couldn't copy counters, out of memory\n");
-+			return -ENOMEM;
-+		}
-+		write_lock_bh(&t->lock);
-+		get_counters(oldcounters, counterstmp, nentries);
-+		write_unlock_bh(&t->lock);
-+
-+		if (copy_to_user(tmp.counters, counterstmp,
-+		   nentries * sizeof(struct ebt_counter))) {
-+			BUGPRINT("Couldn't copy counters to userspace\n");
-+			vfree(counterstmp);
-+			return -EFAULT;
-+		}
-+		vfree(counterstmp);
-+	}
-+
-+	if (copy_to_user(tmp.entries, entries, entries_size)) {
-+		BUGPRINT("Couldn't copy entries to userspace\n");
-+		return -EFAULT;
-+	}
-+	// set the match/watcher/target names right
-+	return EBT_ENTRY_ITERATE(entries, entries_size,
-+	   ebt_make_names, entries, tmp.entries);
-+}
-+
-+static int do_ebt_set_ctl(struct sock *sk,
-+	int cmd, void *user, unsigned int len)
-+{
-+	int ret;
-+
-+	switch(cmd) {
-+	case EBT_SO_SET_ENTRIES:
-+		ret = do_replace(user, len);
-+		break;
-+	case EBT_SO_SET_COUNTERS:
-+		ret = update_counters(user, len);
-+		break;
-+	default:
-+		ret = -EINVAL;
-+  }
-+	return ret;
-+}
-+
-+static int do_ebt_get_ctl(struct sock *sk, int cmd, void *user, int *len)
-+{
-+	int ret;
-+	struct ebt_replace tmp;
-+	struct ebt_table *t;
-+
-+	if (copy_from_user(&tmp, user, sizeof(tmp)))
-+		return -EFAULT;
-+
-+	t = find_table_lock(tmp.name, &ret, &ebt_mutex);
-+	if (!t)
-+		return ret;
-+
-+	switch(cmd) {
-+	case EBT_SO_GET_INFO:
-+	case EBT_SO_GET_INIT_INFO:
-+		if (*len != sizeof(struct ebt_replace)){
-+			ret = -EINVAL;
-+			up(&ebt_mutex);
-+			break;
-+		}
-+		if (cmd == EBT_SO_GET_INFO) {
-+			tmp.nentries = t->private->nentries;
-+			tmp.entries_size = t->private->entries_size;
-+			tmp.valid_hooks = t->valid_hooks;
-+		} else {
-+			tmp.nentries = t->table->nentries;
-+			tmp.entries_size = t->table->entries_size;
-+			tmp.valid_hooks = t->table->valid_hooks;
-+		}
-+		up(&ebt_mutex);
-+		if (copy_to_user(user, &tmp, *len) != 0){
-+			BUGPRINT("c2u Didn't work\n");
-+			ret = -EFAULT;
-+			break;
-+		}
-+		ret = 0;
-+		break;
-+
-+	case EBT_SO_GET_ENTRIES:
-+	case EBT_SO_GET_INIT_ENTRIES:
-+		ret = copy_everything_to_user(t, user, len, cmd);
-+		up(&ebt_mutex);
-+		break;
-+
-+	default:
-+		up(&ebt_mutex);
-+		ret = -EINVAL;
-+	}
-+
-+	return ret;
-+}
-+
-+static struct nf_sockopt_ops ebt_sockopts =
-+{ { NULL, NULL }, PF_INET, EBT_BASE_CTL, EBT_SO_SET_MAX + 1, do_ebt_set_ctl,
-+    EBT_BASE_CTL, EBT_SO_GET_MAX + 1, do_ebt_get_ctl, 0, NULL
-+};
-+
-+static int __init init(void)
-+{
-+	int ret;
-+
-+	down(&ebt_mutex);
-+	list_named_insert(&ebt_targets, &ebt_standard_target);
-+	up(&ebt_mutex);
-+	if ((ret = nf_register_sockopt(&ebt_sockopts)) < 0)
-+		return ret;
-+
-+	printk(KERN_NOTICE "Ebtables v2.0 registered\n");
-+	return 0;
-+}
-+
-+static void __exit fini(void)
-+{
-+	nf_unregister_sockopt(&ebt_sockopts);
-+	printk(KERN_NOTICE "Ebtables v2.0 unregistered\n");
-+}
-+
-+EXPORT_SYMBOL(ebt_register_table);
-+EXPORT_SYMBOL(ebt_unregister_table);
-+EXPORT_SYMBOL(ebt_register_match);
-+EXPORT_SYMBOL(ebt_unregister_match);
-+EXPORT_SYMBOL(ebt_register_watcher);
-+EXPORT_SYMBOL(ebt_unregister_watcher);
-+EXPORT_SYMBOL(ebt_register_target);
-+EXPORT_SYMBOL(ebt_unregister_target);
-+EXPORT_SYMBOL(ebt_do_table);
-+module_init(init);
-+module_exit(fini);
-+MODULE_LICENSE("GPL");
---- /dev/null	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/netfilter_bridge/ebtables.h	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,361 @@
-+/*
-+ *  ebtables
-+ *
-+ *	Authors:
-+ *	Bart De Schuymer		<bart.de.schuymer@pandora.be>
-+ *
-+ *  ebtables.c,v 2.0, September, 2002
-+ *
-+ *  This code is stongly inspired on the iptables code which is
-+ *  Copyright (C) 1999 Paul `Rusty' Russell & Michael J. Neuling
-+ */
-+
-+#ifndef __LINUX_BRIDGE_EFF_H
-+#define __LINUX_BRIDGE_EFF_H
-+#include <linux/if.h>
-+#include <linux/netfilter_bridge.h>
-+#include <linux/if_ether.h>
-+
-+#define EBT_TABLE_MAXNAMELEN 32
-+#define EBT_CHAIN_MAXNAMELEN EBT_TABLE_MAXNAMELEN
-+#define EBT_FUNCTION_MAXNAMELEN EBT_TABLE_MAXNAMELEN
-+
-+// verdicts >0 are "branches"
-+#define EBT_ACCEPT   -1
-+#define EBT_DROP     -2
-+#define EBT_CONTINUE -3
-+#define EBT_RETURN   -4
-+#define NUM_STANDARD_TARGETS   4
-+
-+struct ebt_counter
-+{
-+	uint64_t pcnt;
-+	uint64_t bcnt;
-+};
-+
-+struct ebt_entries {
-+	// this field is always set to zero
-+	// See EBT_ENTRY_OR_ENTRIES.
-+	// Must be same size as ebt_entry.bitmask
-+	unsigned int distinguisher;
-+	// the chain name
-+	char name[EBT_CHAIN_MAXNAMELEN];
-+	// counter offset for this chain
-+	unsigned int counter_offset;
-+	// one standard (accept, drop, return) per hook
-+	int policy;
-+	// nr. of entries
-+	unsigned int nentries;
-+	// entry list
-+	char data[0];
-+};
-+
-+// used for the bitmask of struct ebt_entry
-+
-+// This is a hack to make a difference between an ebt_entry struct and an
-+// ebt_entries struct when traversing the entries from start to end.
-+// Using this simplifies the code alot, while still being able to use
-+// ebt_entries.
-+// Contrary, iptables doesn't use something like ebt_entries and therefore uses
-+// different techniques for naming the policy and such. So, iptables doesn't
-+// need a hack like this.
-+#define EBT_ENTRY_OR_ENTRIES 0x01
-+// these are the normal masks
-+#define EBT_NOPROTO 0x02
-+#define EBT_802_3 0x04
-+#define EBT_SOURCEMAC 0x08
-+#define EBT_DESTMAC 0x10
-+#define EBT_F_MASK (EBT_NOPROTO | EBT_802_3 | EBT_SOURCEMAC | EBT_DESTMAC \
-+   | EBT_ENTRY_OR_ENTRIES)
-+
-+#define EBT_IPROTO 0x01
-+#define EBT_IIN 0x02
-+#define EBT_IOUT 0x04
-+#define EBT_ISOURCE 0x8
-+#define EBT_IDEST 0x10
-+#define EBT_ILOGICALIN 0x20
-+#define EBT_ILOGICALOUT 0x40
-+#define EBT_INV_MASK (EBT_IPROTO | EBT_IIN | EBT_IOUT | EBT_ILOGICALIN \
-+   | EBT_ILOGICALOUT | EBT_ISOURCE | EBT_IDEST)
-+
-+struct ebt_entry_match
-+{
-+	union {
-+		char name[EBT_FUNCTION_MAXNAMELEN];
-+		struct ebt_match *match;
-+	} u;
-+	// size of data
-+	unsigned int match_size;
-+	unsigned char data[0];
-+};
-+
-+struct ebt_entry_watcher
-+{
-+	union {
-+		char name[EBT_FUNCTION_MAXNAMELEN];
-+		struct ebt_watcher *watcher;
-+	} u;
-+	// size of data
-+	unsigned int watcher_size;
-+	unsigned char data[0];
-+};
-+
-+struct ebt_entry_target
-+{
-+	union {
-+		char name[EBT_FUNCTION_MAXNAMELEN];
-+		struct ebt_target *target;
-+	} u;
-+	// size of data
-+	unsigned int target_size;
-+	unsigned char data[0];
-+};
-+
-+#define EBT_STANDARD_TARGET "standard"
-+struct ebt_standard_target
-+{
-+	struct ebt_entry_target target;
-+	int verdict;
-+};
-+
-+// one entry
-+struct ebt_entry {
-+	// this needs to be the first field
-+	unsigned int bitmask;
-+	unsigned int invflags;
-+	uint16_t ethproto;
-+	// the physical in-dev
-+	char in[IFNAMSIZ];
-+	// the logical in-dev
-+	char logical_in[IFNAMSIZ];
-+	// the physical out-dev
-+	char out[IFNAMSIZ];
-+	// the logical out-dev
-+	char logical_out[IFNAMSIZ];
-+	unsigned char sourcemac[ETH_ALEN];
-+	unsigned char sourcemsk[ETH_ALEN];
-+	unsigned char destmac[ETH_ALEN];
-+	unsigned char destmsk[ETH_ALEN];
-+	// sizeof ebt_entry + matches
-+	unsigned int watchers_offset;
-+	// sizeof ebt_entry + matches + watchers
-+	unsigned int target_offset;
-+	// sizeof ebt_entry + matches + watchers + target
-+	unsigned int next_offset;
-+	unsigned char elems[0];
-+};
-+
-+struct ebt_replace
-+{
-+	char name[EBT_TABLE_MAXNAMELEN];
-+	unsigned int valid_hooks;
-+	// nr of rules in the table
-+	unsigned int nentries;
-+	// total size of the entries
-+	unsigned int entries_size;
-+	// start of the chains
-+	struct ebt_entries *hook_entry[NF_BR_NUMHOOKS];
-+	// nr of counters userspace expects back
-+	unsigned int num_counters;
-+	// where the kernel will put the old counters
-+	struct ebt_counter *counters;
-+	char *entries;
-+};
-+
-+// [gs]etsockopt numbers
-+#define EBT_BASE_CTL            128
-+
-+#define EBT_SO_SET_ENTRIES      (EBT_BASE_CTL)
-+#define EBT_SO_SET_COUNTERS     (EBT_SO_SET_ENTRIES+1)
-+#define EBT_SO_SET_MAX          (EBT_SO_SET_COUNTERS+1)
-+
-+#define EBT_SO_GET_INFO         (EBT_BASE_CTL)
-+#define EBT_SO_GET_ENTRIES      (EBT_SO_GET_INFO+1)
-+#define EBT_SO_GET_INIT_INFO    (EBT_SO_GET_ENTRIES+1)
-+#define EBT_SO_GET_INIT_ENTRIES (EBT_SO_GET_INIT_INFO+1)
-+#define EBT_SO_GET_MAX          (EBT_SO_GET_INIT_ENTRIES+1)
-+
-+#ifdef __KERNEL__
-+
-+// return values for match() functions
-+#define EBT_MATCH 0
-+#define EBT_NOMATCH 1
-+
-+struct ebt_match
-+{
-+	struct list_head list;
-+	const char name[EBT_FUNCTION_MAXNAMELEN];
-+	// 0 == it matches
-+	int (*match)(const struct sk_buff *skb, const struct net_device *in,
-+	   const struct net_device *out, const void *matchdata,
-+	   unsigned int datalen);
-+	// 0 == let it in
-+	int (*check)(const char *tablename, unsigned int hookmask,
-+	   const struct ebt_entry *e, void *matchdata, unsigned int datalen);
-+	void (*destroy)(void *matchdata, unsigned int datalen);
-+	struct module *me;
-+};
-+
-+struct ebt_watcher
-+{
-+	struct list_head list;
-+	const char name[EBT_FUNCTION_MAXNAMELEN];
-+	void (*watcher)(const struct sk_buff *skb, unsigned int hooknr,
-+	   const struct net_device *in, const struct net_device *out,
-+	   const void *watcherdata, unsigned int datalen);
-+	// 0 == let it in
-+	int (*check)(const char *tablename, unsigned int hookmask,
-+	   const struct ebt_entry *e, void *watcherdata, unsigned int datalen);
-+	void (*destroy)(void *watcherdata, unsigned int datalen);
-+	struct module *me;
-+};
-+
-+struct ebt_target
-+{
-+	struct list_head list;
-+	const char name[EBT_FUNCTION_MAXNAMELEN];
-+	// returns one of the standard verdicts
-+	int (*target)(struct sk_buff **pskb, unsigned int hooknr,
-+	   const struct net_device *in, const struct net_device *out,
-+	   const void *targetdata, unsigned int datalen);
-+	// 0 == let it in
-+	int (*check)(const char *tablename, unsigned int hookmask,
-+	   const struct ebt_entry *e, void *targetdata, unsigned int datalen);
-+	void (*destroy)(void *targetdata, unsigned int datalen);
-+	struct module *me;
-+};
-+
-+// used for jumping from and into user defined chains (udc)
-+struct ebt_chainstack
-+{
-+	struct ebt_entries *chaininfo; // pointer to chain data
-+	struct ebt_entry *e; // pointer to entry data
-+	unsigned int n; // n'th entry
-+};
-+
-+struct ebt_table_info
-+{
-+	// total size of the entries
-+	unsigned int entries_size;
-+	unsigned int nentries;
-+	// pointers to the start of the chains
-+	struct ebt_entries *hook_entry[NF_BR_NUMHOOKS];
-+	// room to maintain the stack used for jumping from and into udc
-+	struct ebt_chainstack **chainstack;
-+	char *entries;
-+	struct ebt_counter counters[0] ____cacheline_aligned;
-+};
-+
-+struct ebt_table
-+{
-+	struct list_head list;
-+	char name[EBT_TABLE_MAXNAMELEN];
-+	struct ebt_replace *table;
-+	unsigned int valid_hooks;
-+	rwlock_t lock;
-+	// e.g. could be the table explicitly only allows certain
-+	// matches, targets, ... 0 == let it in
-+	int (*check)(const struct ebt_table_info *info,
-+	   unsigned int valid_hooks);
-+	// the data used by the kernel
-+	struct ebt_table_info *private;
-+};
-+
-+#define EBT_ALIGN(s) (((s) + (__alignof__(struct ebt_entry_target)-1)) & \
-+		     ~(__alignof__(struct ebt_entry_target)-1))
-+extern int ebt_register_table(struct ebt_table *table);
-+extern void ebt_unregister_table(struct ebt_table *table);
-+extern int ebt_register_match(struct ebt_match *match);
-+extern void ebt_unregister_match(struct ebt_match *match);
-+extern int ebt_register_watcher(struct ebt_watcher *watcher);
-+extern void ebt_unregister_watcher(struct ebt_watcher *watcher);
-+extern int ebt_register_target(struct ebt_target *target);
-+extern void ebt_unregister_target(struct ebt_target *target);
-+extern 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);
-+
-+   // Used in the kernel match() functions
-+#define FWINV(bool,invflg) ((bool) ^ !!(info->invflags & invflg))
-+// True if the hook mask denotes that the rule is in a base chain,
-+// used in the check() functions
-+#define BASE_CHAIN (hookmask & (1 << NF_BR_NUMHOOKS))
-+// Clear the bit in the hook mask that tells if the rule is on a base chain
-+#define CLEAR_BASE_CHAIN_BIT (hookmask &= ~(1 << NF_BR_NUMHOOKS))
-+// True if the target is not a standard target
-+#define INVALID_TARGET (info->target < -NUM_STANDARD_TARGETS || info->target >= 0)
-+
-+#endif /* __KERNEL__ */
-+
-+// blatently stolen from ip_tables.h
-+// fn returns 0 to continue iteration
-+#define EBT_MATCH_ITERATE(e, fn, args...)                   \
-+({                                                          \
-+	unsigned int __i;                                   \
-+	int __ret = 0;                                      \
-+	struct ebt_entry_match *__match;                    \
-+	                                                    \
-+	for (__i = sizeof(struct ebt_entry);                \
-+	     __i < (e)->watchers_offset;                    \
-+	     __i += __match->match_size +                   \
-+	     sizeof(struct ebt_entry_match)) {              \
-+		__match = (void *)(e) + __i;                \
-+		                                            \
-+		__ret = fn(__match , ## args);              \
-+		if (__ret != 0)                             \
-+			break;                              \
-+	}                                                   \
-+	if (__ret == 0) {                                   \
-+		if (__i != (e)->watchers_offset)            \
-+			__ret = -EINVAL;                    \
-+	}                                                   \
-+	__ret;                                              \
-+})
-+
-+#define EBT_WATCHER_ITERATE(e, fn, args...)                 \
-+({                                                          \
-+	unsigned int __i;                                   \
-+	int __ret = 0;                                      \
-+	struct ebt_entry_watcher *__watcher;                \
-+	                                                    \
-+	for (__i = e->watchers_offset;                      \
-+	     __i < (e)->target_offset;                      \
-+	     __i += __watcher->watcher_size +               \
-+	     sizeof(struct ebt_entry_watcher)) {            \
-+		__watcher = (void *)(e) + __i;              \
-+		                                            \
-+		__ret = fn(__watcher , ## args);            \
-+		if (__ret != 0)                             \
-+			break;                              \
-+	}                                                   \
-+	if (__ret == 0) {                                   \
-+		if (__i != (e)->target_offset)              \
-+			__ret = -EINVAL;                    \
-+	}                                                   \
-+	__ret;                                              \
-+})
-+
-+#define EBT_ENTRY_ITERATE(entries, size, fn, args...)       \
-+({                                                          \
-+	unsigned int __i;                                   \
-+	int __ret = 0;                                      \
-+	struct ebt_entry *__entry;                          \
-+	                                                    \
-+	for (__i = 0; __i < (size);) {                      \
-+		__entry = (void *)(entries) + __i;          \
-+		__ret = fn(__entry , ## args);              \
-+		if (__ret != 0)                             \
-+			break;                              \
-+		if (__entry->bitmask != 0)                  \
-+			__i += __entry->next_offset;        \
-+		else                                        \
-+			__i += sizeof(struct ebt_entries);  \
-+	}                                                   \
-+	if (__ret == 0) {                                   \
-+		if (__i != (size))                          \
-+			__ret = -EINVAL;                    \
-+	}                                                   \
-+	__ret;                                              \
-+})
-+
-+#endif
---- /dev/null	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/netfilter_bridge/ebt_among.h	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,65 @@
-+#ifndef __LINUX_BRIDGE_EBT_AMONG_H
-+#define __LINUX_BRIDGE_EBT_AMONG_H
-+
-+#define EBT_AMONG_DST 0x01
-+#define EBT_AMONG_SRC 0x02
-+
-+/* Grzegorz Borowiak <grzes@gnu.univ.gda.pl> 2003
-+ * 
-+ * Write-once-read-many hash table, used for checking if a given
-+ * MAC address belongs to a set or not and possibly for checking
-+ * if it is related with a given IPv4 address.
-+ *
-+ * The hash value of an address is its last byte.
-+ * 
-+ * In real-world ethernet addresses, values of the last byte are
-+ * evenly distributed and there is no need to consider other bytes.
-+ * It would only slow the routines down.
-+ *
-+ * For MAC address comparison speedup reasons, we introduce a trick.
-+ * MAC address is mapped onto an array of two 32-bit integers.
-+ * This pair of integers is compared with MAC addresses in the
-+ * hash table, which are stored also in form of pairs of integers
-+ * (in `cmp' array). This is quick as it requires only two elementary
-+ * number comparisons in worst case. Further, we take advantage of
-+ * fact that entropy of 3 last bytes of address is larger than entropy
-+ * of 3 first bytes. So first we compare 4 last bytes of addresses and
-+ * if they are the same we compare 2 first.
-+ *
-+ * Yes, it is a memory overhead, but in 2003 AD, who cares?
-+ */
-+
-+struct ebt_mac_wormhash_tuple
-+{
-+	uint32_t cmp[2];
-+	uint32_t ip;
-+};
-+
-+struct ebt_mac_wormhash
-+{
-+	int table[257];
-+	int poolsize;
-+	struct ebt_mac_wormhash_tuple pool[0];
-+};
-+
-+#define ebt_mac_wormhash_size(x) ((x) ? sizeof(struct ebt_mac_wormhash) \
-+		+ (x)->poolsize * sizeof(struct ebt_mac_wormhash_tuple) : 0)
-+
-+struct ebt_among_info
-+{
-+	int wh_dst_ofs;
-+	int wh_src_ofs;
-+	int bitmask;
-+};
-+
-+#define EBT_AMONG_DST_NEG 0x1
-+#define EBT_AMONG_SRC_NEG 0x2
-+
-+#define ebt_among_wh_dst(x) ((x)->wh_dst_ofs ? \
-+	(struct ebt_mac_wormhash*)((char*)(x) + (x)->wh_dst_ofs) : NULL)
-+#define ebt_among_wh_src(x) ((x)->wh_src_ofs ? \
-+	(struct ebt_mac_wormhash*)((char*)(x) + (x)->wh_src_ofs) : NULL)
-+
-+#define EBT_AMONG_MATCH "among"
-+
-+#endif
---- /dev/null	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/netfilter_bridge/ebt_limit.h	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,23 @@
-+#ifndef __LINUX_BRIDGE_EBT_LIMIT_H
-+#define __LINUX_BRIDGE_EBT_LIMIT_H
-+
-+#define EBT_LIMIT_MATCH "limit"
-+
-+/* timings are in milliseconds. */
-+#define EBT_LIMIT_SCALE 10000
-+
-+/* 1/10,000 sec period => max of 10,000/sec.  Min rate is then 429490
-+   seconds, or one every 59 hours. */
-+
-+struct ebt_limit_info
-+{
-+	u_int32_t avg;    /* Average secs between packets * scale */
-+	u_int32_t burst;  /* Period multiplier for upper limit. */
-+
-+	/* Used internally by the kernel */
-+	unsigned long prev;
-+	u_int32_t credit;
-+	u_int32_t credit_cap, cost;
-+};
-+
-+#endif
---- /dev/null	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/netfilter_bridge/ebt_arpreply.h	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,11 @@
-+#ifndef __LINUX_BRIDGE_EBT_ARPREPLY_H
-+#define __LINUX_BRIDGE_EBT_ARPREPLY_H
-+
-+struct ebt_arpreply_info
-+{
-+	unsigned char mac[ETH_ALEN];
-+	int target;
-+};
-+#define EBT_ARPREPLY_TARGET "arpreply"
-+
-+#endif
---- /dev/null	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/netfilter_bridge/ebt_802_3.h	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,60 @@
-+#ifndef __LINUX_BRIDGE_EBT_802_3_H
-+#define __LINUX_BRIDGE_EBT_802_3_H
-+
-+#define EBT_802_3_SAP 0x01
-+#define EBT_802_3_TYPE 0x02
-+
-+#define EBT_802_3_MATCH "802_3"
-+
-+/*
-+ * If frame has DSAP/SSAP value 0xaa you must check the SNAP type
-+ * to discover what kind of packet we're carrying. 
-+ */
-+#define CHECK_TYPE 0xaa
-+
-+/*
-+ * Control field may be one or two bytes.  If the first byte has
-+ * the value 0x03 then the entire length is one byte, otherwise it is two.
-+ * One byte controls are used in Unnumbered Information frames.
-+ * Two byte controls are used in Numbered Information frames.
-+ */
-+#define IS_UI 0x03
-+
-+#define EBT_802_3_MASK (EBT_802_3_SAP | EBT_802_3_TYPE | EBT_802_3)
-+
-+/* ui has one byte ctrl, ni has two */
-+struct hdr_ui {
-+	uint8_t dsap;
-+	uint8_t ssap;
-+	uint8_t ctrl;
-+	uint8_t orig[3];
-+	uint16_t type;
-+};
-+
-+struct hdr_ni {
-+	uint8_t dsap;
-+	uint8_t ssap;
-+	uint16_t ctrl;
-+	uint8_t  orig[3];
-+	uint16_t type;
-+};
-+
-+struct ebt_802_3_hdr {
-+	uint8_t  daddr[6];
-+	uint8_t  saddr[6];
-+	uint16_t len;
-+	union {
-+		struct hdr_ui ui;
-+		struct hdr_ni ni;
-+	} llc;
-+};
-+
-+struct ebt_802_3_info 
-+{
-+	uint8_t  sap;
-+	uint16_t type;
-+	uint8_t  bitmask;
-+	uint8_t  invflags;
-+};
-+
-+#endif
---- /dev/null	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/netfilter_bridge/ebt_arp.h	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,32 @@
-+#ifndef __LINUX_BRIDGE_EBT_ARP_H
-+#define __LINUX_BRIDGE_EBT_ARP_H
-+
-+#define EBT_ARP_OPCODE 0x01
-+#define EBT_ARP_HTYPE 0x02
-+#define EBT_ARP_PTYPE 0x04
-+#define EBT_ARP_SRC_IP 0x08
-+#define EBT_ARP_DST_IP 0x10
-+#define EBT_ARP_SRC_MAC 0x20
-+#define EBT_ARP_DST_MAC 0x40
-+#define EBT_ARP_MASK (EBT_ARP_OPCODE | EBT_ARP_HTYPE | EBT_ARP_PTYPE | \
-+   EBT_ARP_SRC_IP | EBT_ARP_DST_IP | EBT_ARP_SRC_MAC | EBT_ARP_DST_MAC)
-+#define EBT_ARP_MATCH "arp"
-+
-+struct ebt_arp_info
-+{
-+	uint16_t htype;
-+	uint16_t ptype;
-+	uint16_t opcode;
-+	uint32_t saddr;
-+	uint32_t smsk;
-+	uint32_t daddr;
-+	uint32_t dmsk;
-+	unsigned char smaddr[ETH_ALEN];
-+	unsigned char smmsk[ETH_ALEN];
-+	unsigned char dmaddr[ETH_ALEN];
-+	unsigned char dmmsk[ETH_ALEN];
-+	uint8_t  bitmask;
-+	uint8_t  invflags;
-+};
-+
-+#endif
---- /dev/null	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/netfilter_bridge/ebt_ip.h	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,43 @@
-+/*
-+ *  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
-+ */
-+
-+#ifndef __LINUX_BRIDGE_EBT_IP_H
-+#define __LINUX_BRIDGE_EBT_IP_H
-+
-+#define EBT_IP_SOURCE 0x01
-+#define EBT_IP_DEST 0x02
-+#define EBT_IP_TOS 0x04
-+#define EBT_IP_PROTO 0x08
-+#define EBT_IP_SPORT 0x10
-+#define EBT_IP_DPORT 0x20
-+#define EBT_IP_MASK (EBT_IP_SOURCE | EBT_IP_DEST | EBT_IP_TOS | EBT_IP_PROTO |\
-+ EBT_IP_SPORT | EBT_IP_DPORT )
-+#define EBT_IP_MATCH "ip"
-+
-+// the same values are used for the invflags
-+struct ebt_ip_info
-+{
-+	uint32_t saddr;
-+	uint32_t daddr;
-+	uint32_t smsk;
-+	uint32_t dmsk;
-+	uint8_t  tos;
-+	uint8_t  protocol;
-+	uint8_t  bitmask;
-+	uint8_t  invflags;
-+	uint16_t sport[2];
-+	uint16_t dport[2];
-+};
-+
-+#endif
---- /dev/null	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/netfilter_bridge/ebt_pkttype.h	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,11 @@
-+#ifndef __LINUX_BRIDGE_EBT_PKTTYPE_H
-+#define __LINUX_BRIDGE_EBT_PKTTYPE_H
-+
-+struct ebt_pkttype_info
-+{
-+	uint8_t pkt_type;
-+	uint8_t invert;
-+};
-+#define EBT_PKTTYPE_MATCH "pkttype"
-+
-+#endif
---- /dev/null	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/netfilter_bridge/ebt_stp.h	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,46 @@
-+#ifndef __LINUX_BRIDGE_EBT_STP_H
-+#define __LINUX_BRIDGE_EBT_STP_H
-+
-+#define EBT_STP_TYPE		0x0001
-+
-+#define EBT_STP_FLAGS		0x0002
-+#define EBT_STP_ROOTPRIO	0x0004
-+#define EBT_STP_ROOTADDR	0x0008
-+#define EBT_STP_ROOTCOST	0x0010
-+#define EBT_STP_SENDERPRIO	0x0020
-+#define EBT_STP_SENDERADDR	0x0040
-+#define EBT_STP_PORT		0x0080
-+#define EBT_STP_MSGAGE		0x0100
-+#define EBT_STP_MAXAGE		0x0200
-+#define EBT_STP_HELLOTIME	0x0400
-+#define EBT_STP_FWDD		0x0800
-+
-+#define EBT_STP_MASK		0x0fff
-+#define EBT_STP_CONFIG_MASK	0x0ffe
-+
-+#define EBT_STP_MATCH "stp"
-+
-+struct ebt_stp_config_info
-+{
-+	uint8_t flags;
-+	uint16_t root_priol, root_priou;
-+	char root_addr[6], root_addrmsk[6];
-+	uint32_t root_costl, root_costu;
-+	uint16_t sender_priol, sender_priou;
-+	char sender_addr[6], sender_addrmsk[6];
-+	uint16_t portl, portu;
-+	uint16_t msg_agel, msg_ageu;
-+	uint16_t max_agel, max_ageu;
-+	uint16_t hello_timel, hello_timeu;
-+	uint16_t forward_delayl, forward_delayu;
-+};
-+
-+struct ebt_stp_info
-+{
-+	uint8_t type;
-+	struct ebt_stp_config_info config;
-+	uint16_t bitmask;
-+	uint16_t invflags;
-+};
-+
-+#endif
---- /dev/null	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/netfilter_bridge/ebt_vlan.h	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,20 @@
-+#ifndef __LINUX_BRIDGE_EBT_VLAN_H
-+#define __LINUX_BRIDGE_EBT_VLAN_H
-+
-+#define EBT_VLAN_ID	0x01
-+#define EBT_VLAN_PRIO	0x02
-+#define EBT_VLAN_ENCAP	0x04
-+#define EBT_VLAN_MASK (EBT_VLAN_ID | EBT_VLAN_PRIO | EBT_VLAN_ENCAP)
-+#define EBT_VLAN_MATCH "vlan"
-+
-+struct ebt_vlan_info {
-+	uint16_t id;		/* VLAN ID {1-4095} */
-+	uint8_t prio;		/* VLAN User Priority {0-7} */
-+	uint16_t encap;		/* VLAN Encapsulated frame code {0-65535} */
-+	uint8_t bitmask;		/* Args bitmask bit 1=1 - ID arg,
-+				   bit 2=1 User-Priority arg, bit 3=1 encap*/
-+	uint8_t invflags;		/* Inverse bitmask  bit 1=1 - inversed ID arg, 
-+				   bit 2=1 - inversed Pirority arg */
-+};
-+
-+#endif
---- /dev/null	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/netfilter_bridge/ebt_log.h	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,17 @@
-+#ifndef __LINUX_BRIDGE_EBT_LOG_H
-+#define __LINUX_BRIDGE_EBT_LOG_H
-+
-+#define EBT_LOG_IP 0x01 // if the frame is made by ip, log the ip information
-+#define EBT_LOG_ARP 0x02
-+#define EBT_LOG_MASK (EBT_LOG_IP | EBT_LOG_ARP)
-+#define EBT_LOG_PREFIX_SIZE 30
-+#define EBT_LOG_WATCHER "log"
-+
-+struct ebt_log_info
-+{
-+	uint8_t loglevel;
-+	uint8_t prefix[EBT_LOG_PREFIX_SIZE];
-+	uint32_t bitmask;
-+};
-+
-+#endif
---- /dev/null	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/netfilter_bridge/ebt_ulog.h	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,33 @@
-+#ifndef _EBT_ULOG_H
-+#define _EBT_ULOG_H
-+
-+#define EBT_ULOG_DEFAULT_NLGROUP 0
-+#define EBT_ULOG_DEFAULT_QTHRESHOLD 1
-+#define EBT_ULOG_MAXNLGROUPS 32 /* hardcoded netlink max */
-+#define EBT_ULOG_PREFIX_LEN 32
-+#define EBT_ULOG_MAX_QLEN 50
-+#define EBT_ULOG_WATCHER "ulog"
-+
-+struct ebt_ulog_info {
-+	uint32_t nlgroup;
-+	unsigned int cprange;
-+	unsigned int qthreshold;
-+	char prefix[EBT_ULOG_PREFIX_LEN];
-+};
-+
-+typedef struct ebt_ulog_packet_msg {
-+	char indev[IFNAMSIZ];
-+	char outdev[IFNAMSIZ];
-+	char physindev[IFNAMSIZ];
-+	char physoutdev[IFNAMSIZ];
-+	char prefix[EBT_ULOG_PREFIX_LEN];
-+	struct timeval stamp;
-+	unsigned long mark;
-+	unsigned int hook;
-+	size_t data_len;
-+	/* The complete packet, including Ethernet header and perhaps
-+	 * the VLAN header is appended */
-+	unsigned char data[0] __attribute__ ((aligned (__alignof__(int))));
-+} ebt_ulog_packet_msg_t;
-+
-+#endif /* _EBT_ULOG_H */
---- /dev/null	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/netfilter_bridge/ebt_nat.h	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,13 @@
-+#ifndef __LINUX_BRIDGE_EBT_NAT_H
-+#define __LINUX_BRIDGE_EBT_NAT_H
-+
-+struct ebt_nat_info
-+{
-+	unsigned char mac[ETH_ALEN];
-+	// EBT_ACCEPT, EBT_DROP, EBT_CONTINUE or EBT_RETURN
-+	int target;
-+};
-+#define EBT_SNAT_TARGET "snat"
-+#define EBT_DNAT_TARGET "dnat"
-+
-+#endif
---- /dev/null	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/netfilter_bridge/ebt_redirect.h	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,11 @@
-+#ifndef __LINUX_BRIDGE_EBT_REDIRECT_H
-+#define __LINUX_BRIDGE_EBT_REDIRECT_H
-+
-+struct ebt_redirect_info
-+{
-+	// EBT_ACCEPT, EBT_DROP or EBT_CONTINUE or EBT_RETURN
-+	int target;
-+};
-+#define EBT_REDIRECT_TARGET "redirect"
-+
-+#endif
---- /dev/null	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/netfilter_bridge/ebt_mark_m.h	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,15 @@
-+#ifndef __LINUX_BRIDGE_EBT_MARK_M_H
-+#define __LINUX_BRIDGE_EBT_MARK_M_H
-+
-+#define EBT_MARK_AND 0x01
-+#define EBT_MARK_OR 0x02
-+#define EBT_MARK_MASK (EBT_MARK_AND | EBT_MARK_OR)
-+struct ebt_mark_m_info
-+{
-+	unsigned long mark, mask;
-+	uint8_t invert;
-+	uint8_t bitmask;
-+};
-+#define EBT_MARK_MATCH "mark_m"
-+
-+#endif
---- /dev/null	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/netfilter_bridge/ebt_mark_t.h	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,12 @@
-+#ifndef __LINUX_BRIDGE_EBT_MARK_T_H
-+#define __LINUX_BRIDGE_EBT_MARK_T_H
-+
-+struct ebt_mark_t_info
-+{
-+	unsigned long mark;
-+	// EBT_ACCEPT, EBT_DROP or EBT_CONTINUE or EBT_RETURN
-+	int target;
-+};
-+#define EBT_MARK_TARGET "mark"
-+
-+#endif
---- linux-2.4.31/include/linux/netfilter.h	2005-01-19 14:10:12.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/netfilter.h	2005-09-15 16:57:23.000000000 +0000
-@@ -17,7 +17,8 @@
- #define NF_STOLEN 2
- #define NF_QUEUE 3
- #define NF_REPEAT 4
--#define NF_MAX_VERDICT NF_REPEAT
-+#define NF_STOP 5
-+#define NF_MAX_VERDICT NF_STOP
- 
- /* Generic cache responses from hook functions.
-    <= 0x2000 is used for protocol-flags. */
-@@ -118,17 +119,34 @@ extern struct list_head nf_hooks[NPROTO]
- /* This is gross, but inline doesn't cut it for avoiding the function
-    call in fast path: gcc doesn't inline (needs value tracking?). --RR */
- #ifdef CONFIG_NETFILTER_DEBUG
--#define NF_HOOK nf_hook_slow
-+#define NF_HOOK(pf, hook, skb, indev, outdev, okfn)                           \
-+({int __ret;                                                                  \
-+if ((__ret=nf_hook_slow(pf, hook, &(skb), indev, outdev, okfn, INT_MIN)) == 1) \
-+       __ret = (okfn)(skb);                                                   \
-+__ret;})
-+#define NF_HOOK_THRESH(pf, hook, skb, indev, outdev, okfn, thresh)            \
-+({int __ret;                                                                  \
-+if ((__ret=nf_hook_slow(pf, hook, &(skb), indev, outdev, okfn, thresh)) == 1)  \
-+       __ret = (okfn)(skb);                                                   \
-+__ret;})
- #else
--#define NF_HOOK(pf, hook, skb, indev, outdev, okfn)			\
--(list_empty(&nf_hooks[(pf)][(hook)])					\
-- ? (okfn)(skb)								\
-- : nf_hook_slow((pf), (hook), (skb), (indev), (outdev), (okfn)))
-+#define NF_HOOK(pf, hook, skb, indev, outdev, okfn)                           \
-+({int __ret;                                                                  \
-+if (list_empty(&nf_hooks[pf][hook]) ||                                        \
-+    (__ret=nf_hook_slow(pf, hook, &(skb), indev, outdev, okfn, INT_MIN)) == 1) \
-+       __ret = (okfn)(skb);                                                   \
-+__ret;})
-+#define NF_HOOK_THRESH(pf, hook, skb, indev, outdev, okfn, thresh)            \
-+({int __ret;                                                                  \
-+if (list_empty(&nf_hooks[pf][hook]) ||                                        \
-+    (__ret=nf_hook_slow(pf, hook, &(skb), indev, outdev, okfn, thresh)) == 1)  \
-+       __ret = (okfn)(skb);                                                   \
-+__ret;})
- #endif
- 
--int nf_hook_slow(int pf, unsigned int hook, struct sk_buff *skb,
-+int nf_hook_slow(int pf, unsigned int hook, struct sk_buff **pskb,
- 		 struct net_device *indev, struct net_device *outdev,
--		 int (*okfn)(struct sk_buff *));
-+		 int (*okfn)(struct sk_buff *), int thresh);
- 
- /* Call setsockopt() */
- int nf_setsockopt(struct sock *sk, int pf, int optval, char *opt, 
---- linux-2.4.31/include/linux/netfilter_ipv4.h	2002-02-25 19:38:13.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/netfilter_ipv4.h	2005-09-15 16:57:23.000000000 +0000
-@@ -52,8 +52,10 @@
- enum nf_ip_hook_priorities {
- 	NF_IP_PRI_FIRST = INT_MIN,
- 	NF_IP_PRI_CONNTRACK = -200,
-+	NF_IP_PRI_BRIDGE_SABOTAGE_FORWARD = -175,
- 	NF_IP_PRI_MANGLE = -150,
- 	NF_IP_PRI_NAT_DST = -100,
-+	NF_IP_PRI_BRIDGE_SABOTAGE_LOCAL_OUT = -50,
- 	NF_IP_PRI_FILTER = 0,
- 	NF_IP_PRI_NAT_SRC = 100,
- 	NF_IP_PRI_LAST = INT_MAX,
---- linux-2.4.31/include/linux/netfilter_ipv6.h	2001-01-02 00:17:54.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/netfilter_ipv6.h	2005-09-15 16:57:23.000000000 +0000
-@@ -57,8 +57,10 @@
- enum nf_ip6_hook_priorities {
- 	NF_IP6_PRI_FIRST = INT_MIN,
- 	NF_IP6_PRI_CONNTRACK = -200,
-+	NF_IP6_PRI_BRIDGE_SABOTAGE_FORWARD = -175,
- 	NF_IP6_PRI_MANGLE = -150,
- 	NF_IP6_PRI_NAT_DST = -100,
-+	NF_IP6_PRI_BRIDGE_SABOTAGE_LOCAL_OUT = -50,
- 	NF_IP6_PRI_FILTER = 0,
- 	NF_IP6_PRI_NAT_SRC = 100,
- 	NF_IP6_PRI_LAST = INT_MAX,
---- linux-2.4.31/include/linux/skbuff.h	2005-04-04 01:42:20.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/skbuff.h	2005-09-15 16:57:23.000000000 +0000
-@@ -92,6 +92,20 @@ struct nf_conntrack {
- struct nf_ct_info {
- 	struct nf_conntrack *master;
- };
-+
-+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-+struct nf_bridge_info {
-+	atomic_t use;
-+	struct net_device *physindev;
-+	struct net_device *physoutdev;
-+#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
-+	struct net_device *netoutdev;
-+#endif
-+	unsigned int mask;
-+	unsigned long data[32 / sizeof(unsigned long)];
-+};
-+#endif
-+
- #endif
- 
- struct sk_buff_head {
-@@ -208,6 +222,9 @@ struct sk_buff {
- #ifdef CONFIG_NETFILTER_DEBUG
-         unsigned int nf_debug;
- #endif
-+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-+	struct nf_bridge_info	*nf_bridge;	/* Saved data about a bridged frame - see br_netfilter.c */
-+#endif
- #endif /*CONFIG_NETFILTER*/
- 
- #if defined(CONFIG_HIPPI)
-@@ -1171,6 +1188,20 @@ nf_reset(struct sk_buff *skb)
- 	skb->nf_debug = 0;
- #endif
- }
-+
-+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-+static inline void nf_bridge_put(struct nf_bridge_info *nf_bridge)
-+{
-+	if (nf_bridge && atomic_dec_and_test(&nf_bridge->use))
-+		kfree(nf_bridge);
-+}
-+static inline void nf_bridge_get(struct nf_bridge_info *nf_bridge)
-+{
-+	if (nf_bridge)
-+		atomic_inc(&nf_bridge->use);
-+}
-+#endif
-+
- #else /* CONFIG_NETFILTER */
- static inline void nf_reset(struct sk_buff *skb) {}
- #endif /* CONFIG_NETFILTER */
---- linux-2.4.31/net/core/netfilter.c	2005-01-19 14:10:13.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/net/core/netfilter.c	2005-09-15 16:57:23.000000000 +0000
-@@ -342,32 +342,29 @@ static unsigned int nf_iterate(struct li
- 			       const struct net_device *indev,
- 			       const struct net_device *outdev,
- 			       struct list_head **i,
--			       int (*okfn)(struct sk_buff *))
-+			       int (*okfn)(struct sk_buff *),
-+			       int hook_thresh)
- {
-+	unsigned int verdict;
-+
- 	for (*i = (*i)->next; *i != head; *i = (*i)->next) {
- 		struct nf_hook_ops *elem = (struct nf_hook_ops *)*i;
--		switch (elem->hook(hook, skb, indev, outdev, okfn)) {
--		case NF_QUEUE:
--			return NF_QUEUE;
--
--		case NF_STOLEN:
--			return NF_STOLEN;
--
--		case NF_DROP:
--			return NF_DROP;
- 
--		case NF_REPEAT:
--			*i = (*i)->prev;
--			break;
-+		if (hook_thresh > elem->priority)
-+			continue;
- 
-+		verdict = elem->hook(hook, skb, indev, outdev, okfn);
-+		if (verdict != NF_ACCEPT) {
- #ifdef CONFIG_NETFILTER_DEBUG
--		case NF_ACCEPT:
--			break;
--
--		default:
--			NFDEBUG("Evil return from %p(%u).\n", 
--				elem->hook, hook);
-+			if (unlikely(verdict > NF_MAX_VERDICT)) {
-+				NFDEBUG("Evil return from %p(%u).\n",
-+				        elem->hook, hook);
-+				continue;
-+			}
- #endif
-+			if (verdict != NF_REPEAT)
-+				return verdict;
-+			*i = (*i)->prev;
- 		}
- 	}
- 	return NF_ACCEPT;
-@@ -413,6 +410,10 @@ static void nf_queue(struct sk_buff *skb
- {
- 	int status;
- 	struct nf_info *info;
-+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-+	struct net_device *physindev = NULL;
-+	struct net_device *physoutdev = NULL;
-+#endif
- 
- 	if (!queue_handler[pf].outfn) {
- 		kfree_skb(skb);
-@@ -435,36 +436,52 @@ static void nf_queue(struct sk_buff *skb
- 	if (indev) dev_hold(indev);
- 	if (outdev) dev_hold(outdev);
- 
-+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-+	if (skb->nf_bridge) {
-+		physindev = skb->nf_bridge->physindev;
-+		if (physindev) dev_hold(physindev);
-+		physoutdev = skb->nf_bridge->physoutdev;
-+		if (physoutdev) dev_hold(physoutdev);
-+	}
-+#endif
-+
- 	status = queue_handler[pf].outfn(skb, info, queue_handler[pf].data);
- 	if (status < 0) {
- 		/* James M doesn't say fuck enough. */
- 		if (indev) dev_put(indev);
- 		if (outdev) dev_put(outdev);
-+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-+		if (physindev) dev_put(physindev);
-+		if (physoutdev) dev_put(physoutdev);
-+#endif
- 		kfree(info);
- 		kfree_skb(skb);
- 		return;
- 	}
- }
- 
--int nf_hook_slow(int pf, unsigned int hook, struct sk_buff *skb,
-+/* Returns 1 if okfn() needs to be executed by the caller,
-+ * -EPERM for NF_DROP, 0 otherwise. */
-+int nf_hook_slow(int pf, unsigned int hook, struct sk_buff **pskb,
- 		 struct net_device *indev,
- 		 struct net_device *outdev,
--		 int (*okfn)(struct sk_buff *))
-+		 int (*okfn)(struct sk_buff *),
-+		 int hook_thresh)
- {
- 	struct list_head *elem;
- 	unsigned int verdict;
- 	int ret = 0;
- 
- 	/* This stopgap cannot be removed until all the hooks are audited. */
--	if (skb_is_nonlinear(skb) && skb_linearize(skb, GFP_ATOMIC) != 0) {
--		kfree_skb(skb);
-+	if (skb_is_nonlinear(*pskb) && skb_linearize(*pskb, GFP_ATOMIC) != 0) {
-+		kfree_skb(*pskb);
- 		return -ENOMEM;
- 	}
--	if (skb->ip_summed == CHECKSUM_HW) {
-+	if ((*pskb)->ip_summed == CHECKSUM_HW) {
- 		if (outdev == NULL) {
--			skb->ip_summed = CHECKSUM_NONE;
-+			(*pskb)->ip_summed = CHECKSUM_NONE;
- 		} else {
--			skb_checksum_help(skb);
-+			skb_checksum_help(*pskb);
- 		}
- 	}
- 
-@@ -472,30 +489,24 @@ int nf_hook_slow(int pf, unsigned int ho
- 	br_read_lock_bh(BR_NETPROTO_LOCK);
- 
- #ifdef CONFIG_NETFILTER_DEBUG
--	if (skb->nf_debug & (1 << hook)) {
-+	if (unlikely((*pskb)->nf_debug & (1 << hook))) {
- 		printk("nf_hook: hook %i already set.\n", hook);
--		nf_dump_skb(pf, skb);
-+		nf_dump_skb(pf, *pskb);
- 	}
--	skb->nf_debug |= (1 << hook);
-+	(*pskb)->nf_debug |= (1 << hook);
- #endif
- 
- 	elem = &nf_hooks[pf][hook];
--	verdict = nf_iterate(&nf_hooks[pf][hook], &skb, hook, indev,
--			     outdev, &elem, okfn);
--	if (verdict == NF_QUEUE) {
--		NFDEBUG("nf_hook: Verdict = QUEUE.\n");
--		nf_queue(skb, elem, pf, hook, indev, outdev, okfn);
--	}
--
--	switch (verdict) {
--	case NF_ACCEPT:
--		ret = okfn(skb);
--		break;
--
--	case NF_DROP:
--		kfree_skb(skb);
-+	verdict = nf_iterate(&nf_hooks[pf][hook], pskb, hook, indev,
-+			     outdev, &elem, okfn, hook_thresh);
-+	if (verdict == NF_ACCEPT || verdict == NF_STOP)
-+		ret = 1;
-+	else if (verdict == NF_DROP) {
-+		kfree_skb(*pskb);
- 		ret = -EPERM;
--		break;
-+	} else if (verdict == NF_QUEUE) {
-+		NFDEBUG("nf_hook: Verdict = QUEUE.\n");
-+		nf_queue(*pskb, elem, pf, hook, indev, outdev, okfn);
- 	}
- 
- 	br_read_unlock_bh(BR_NETPROTO_LOCK);
-@@ -510,6 +521,14 @@ void nf_reinject(struct sk_buff *skb, st
- 
- 	/* We don't have BR_NETPROTO_LOCK here */
- 	br_read_lock_bh(BR_NETPROTO_LOCK);
-+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-+	if (skb->nf_bridge) {
-+		if (skb->nf_bridge->physindev)
-+			dev_put(skb->nf_bridge->physindev);
-+		if (skb->nf_bridge->physoutdev)
-+			dev_put(skb->nf_bridge->physoutdev);
-+	}
-+#endif
- 	for (i = nf_hooks[info->pf][info->hook].next; i != elem; i = i->next) {
- 		if (i == &nf_hooks[info->pf][info->hook]) {
- 			/* The module which sent it to userspace is gone. */
-@@ -530,7 +549,7 @@ void nf_reinject(struct sk_buff *skb, st
- 		verdict = nf_iterate(&nf_hooks[info->pf][info->hook],
- 				     &skb, info->hook, 
- 				     info->indev, info->outdev, &elem,
--				     info->okfn);
-+				     info->okfn, INT_MIN);
- 	}
- 
- 	switch (verdict) {
---- linux-2.4.31/net/core/skbuff.c	2003-08-25 11:44:44.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/net/core/skbuff.c	2005-09-15 16:57:23.000000000 +0000
-@@ -246,6 +246,9 @@ static inline void skb_headerinit(void *
- #ifdef CONFIG_NETFILTER_DEBUG
- 	skb->nf_debug = 0;
- #endif
-+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-+	skb->nf_bridge	  = NULL;
-+#endif
- #endif
- #ifdef CONFIG_NET_SCHED
- 	skb->tc_index = 0;
-@@ -326,6 +329,9 @@ void __kfree_skb(struct sk_buff *skb)
- 	}
- #ifdef CONFIG_NETFILTER
- 	nf_conntrack_put(skb->nfct);
-+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-+	nf_bridge_put(skb->nf_bridge);
-+#endif
- #endif
- 	skb_headerinit(skb, NULL, 0);  /* clean state */
- 	kfree_skbmem(skb);
-@@ -393,6 +399,9 @@ struct sk_buff *skb_clone(struct sk_buff
- #ifdef CONFIG_NETFILTER_DEBUG
- 	C(nf_debug);
- #endif
-+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-+	C(nf_bridge);
-+#endif
- #endif /*CONFIG_NETFILTER*/
- #if defined(CONFIG_HIPPI)
- 	C(private);
-@@ -405,6 +414,9 @@ struct sk_buff *skb_clone(struct sk_buff
- 	skb->cloned = 1;
- #ifdef CONFIG_NETFILTER
- 	nf_conntrack_get(skb->nfct);
-+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-+	nf_bridge_get(skb->nf_bridge);
-+#endif
- #endif
- 	return n;
- }
-@@ -440,6 +452,10 @@ static void copy_skb_header(struct sk_bu
- #ifdef CONFIG_NETFILTER_DEBUG
- 	new->nf_debug=old->nf_debug;
- #endif
-+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-+	new->nf_bridge=old->nf_bridge;
-+	nf_bridge_get(new->nf_bridge);
-+#endif
- #endif
- #ifdef CONFIG_NET_SCHED
- 	new->tc_index = old->tc_index;
-@@ -726,9 +742,9 @@ struct sk_buff *skb_copy_expand(const st
- 	/* Set the tail pointer and length */
- 	skb_put(n,skb->len);
- 
--	/* Copy the data only. */
--	if (skb_copy_bits(skb, 0, n->data, skb->len))
--		BUG();
-+       /* Copy the linear data and header. */
-+       if (skb_copy_bits(skb, -newheadroom, n->head, newheadroom + skb->len))
-+                BUG();
- 
- 	copy_skb_header(n, skb);
- 	return n;
---- linux-2.4.31/net/ipv4/netfilter/ip_tables.c	2005-04-04 01:42:20.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/net/ipv4/netfilter/ip_tables.c	2005-09-15 16:57:23.000000000 +0000
-@@ -120,12 +120,19 @@ static LIST_HEAD(ipt_tables);
- static inline int
- ip_packet_match(const struct iphdr *ip,
- 		const char *indev,
-+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-+		const char *physindev,
-+#endif
- 		const char *outdev,
-+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-+		const char *physoutdev,
-+#endif
- 		const struct ipt_ip *ipinfo,
- 		int isfrag)
- {
- 	size_t i;
- 	unsigned long ret;
-+	unsigned long ret2 = 1;
- 
- #define FWINV(bool,invflg) ((bool) ^ !!(ipinfo->invflags & invflg))
- 
-@@ -155,7 +162,15 @@ ip_packet_match(const struct iphdr *ip,
- 			& ((const unsigned long *)ipinfo->iniface_mask)[i];
- 	}
- 
--	if (FWINV(ret != 0, IPT_INV_VIA_IN)) {
-+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-+	for (i = 0, ret2 = 0; i < IFNAMSIZ/sizeof(unsigned long); i++) {
-+		ret2 |= (((const unsigned long *)physindev)[i]
-+			^ ((const unsigned long *)ipinfo->iniface)[i])
-+			& ((const unsigned long *)ipinfo->iniface_mask)[i];
-+	}
-+#endif
-+
-+	if (FWINV(ret != 0 && ret2 != 0, IPT_INV_VIA_IN)) {
- 		dprintf("VIA in mismatch (%s vs %s).%s\n",
- 			indev, ipinfo->iniface,
- 			ipinfo->invflags&IPT_INV_VIA_IN ?" (INV)":"");
-@@ -168,7 +183,15 @@ ip_packet_match(const struct iphdr *ip,
- 			& ((const unsigned long *)ipinfo->outiface_mask)[i];
- 	}
- 
--	if (FWINV(ret != 0, IPT_INV_VIA_OUT)) {
-+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-+	for (i = 0, ret2 = 0; i < IFNAMSIZ/sizeof(unsigned long); i++) {
-+		ret2 |= (((const unsigned long *)physoutdev)[i]
-+			^ ((const unsigned long *)ipinfo->outiface)[i])
-+			& ((const unsigned long *)ipinfo->outiface_mask)[i];
-+	}
-+#endif
-+
-+	if (FWINV(ret != 0 && ret2 != 0, IPT_INV_VIA_OUT)) {
- 		dprintf("VIA out mismatch (%s vs %s).%s\n",
- 			outdev, ipinfo->outiface,
- 			ipinfo->invflags&IPT_INV_VIA_OUT ?" (INV)":"");
-@@ -267,6 +290,9 @@ ipt_do_table(struct sk_buff **pskb,
- 	/* Initializing verdict to NF_DROP keeps gcc happy. */
- 	unsigned int verdict = NF_DROP;
- 	const char *indev, *outdev;
-+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-+	const char *physindev, *physoutdev;
-+#endif
- 	void *table_base;
- 	struct ipt_entry *e, *back;
- 
-@@ -276,6 +302,13 @@ ipt_do_table(struct sk_buff **pskb,
- 	datalen = (*pskb)->len - ip->ihl * 4;
- 	indev = in ? in->name : nulldevname;
- 	outdev = out ? out->name : nulldevname;
-+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-+	physindev = ((*pskb)->nf_bridge && (*pskb)->nf_bridge->physindev) ?
-+		(*pskb)->nf_bridge->physindev->name : nulldevname;
-+	physoutdev = ((*pskb)->nf_bridge && (*pskb)->nf_bridge->physoutdev) ?
-+		(*pskb)->nf_bridge->physoutdev->name : nulldevname;
-+#endif
-+
- 	/* We handle fragments by dealing with the first fragment as
- 	 * if it was a normal packet.  All other fragments are treated
- 	 * normally, except that they will NEVER match rules that ask
-@@ -311,7 +344,15 @@ ipt_do_table(struct sk_buff **pskb,
- 		IP_NF_ASSERT(e);
- 		IP_NF_ASSERT(back);
- 		(*pskb)->nfcache |= e->nfcache;
--		if (ip_packet_match(ip, indev, outdev, &e->ip, offset)) {
-+		if (ip_packet_match(ip, indev,
-+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-+		    physindev,
-+#endif
-+		    outdev,
-+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-+		    physoutdev,
-+#endif
-+		    &e->ip, offset)) {
- 			struct ipt_entry_target *t;
- 
- 			if (IPT_MATCH_ITERATE(e, do_match,
---- linux-2.4.31/net/ipv4/ip_output.c	2005-01-19 14:10:13.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/net/ipv4/ip_output.c	2005-09-15 16:57:23.000000000 +0000
-@@ -77,6 +77,7 @@
- #include <linux/netfilter_ipv4.h>
- #include <linux/mroute.h>
- #include <linux/netlink.h>
-+#include <linux/netfilter_bridge.h>
- 
- /*
-  *      Shall we try to damage output packets if routing dev changes?
-@@ -769,7 +770,8 @@ int ip_fragment(struct sk_buff *skb, int
- 	int not_last_frag;
- 	struct rtable *rt = (struct rtable*)skb->dst;
- 	int err = 0;
--
-+        unsigned int ll_rs = 0;
-+	
- 	dev = rt->u.dst.dev;
- 
- 	/*
-@@ -785,6 +787,10 @@ int ip_fragment(struct sk_buff *skb, int
- 	hlen = iph->ihl * 4;
- 	left = skb->len - hlen;		/* Space per frame */
- 	mtu = rt->u.dst.pmtu - hlen;	/* Size of data space */
-+#ifdef CONFIG_NETFILTER
-+       ll_rs = nf_bridge_pad(skb);
-+       mtu -= ll_rs;
-+#endif
- 	ptr = raw + hlen;		/* Where to start from */
- 
- 	/*
-@@ -812,7 +818,7 @@ int ip_fragment(struct sk_buff *skb, int
- 		 *	Allocate buffer.
- 		 */
- 
--		if ((skb2 = alloc_skb(len+hlen+dev->hard_header_len+15,GFP_ATOMIC)) == NULL) {
-+		if ((skb2 = alloc_skb(len+hlen+dev->hard_header_len+15+ll_rs,GFP_ATOMIC)) == NULL) {
- 			NETDEBUG(printk(KERN_INFO "IP: frag: no memory for new fragment!\n"));
- 			err = -ENOMEM;
- 			goto fail;
-@@ -824,7 +830,7 @@ int ip_fragment(struct sk_buff *skb, int
- 
- 		skb2->pkt_type = skb->pkt_type;
- 		skb2->priority = skb->priority;
--		skb_reserve(skb2, (dev->hard_header_len+15)&~15);
-+		skb_reserve(skb2, (dev->hard_header_len+15+ll_rs)&~15);
- 		skb_put(skb2, len + hlen);
- 		skb2->nh.raw = skb2->data;
- 		skb2->h.raw = skb2->data + hlen;
-@@ -890,6 +896,10 @@ int ip_fragment(struct sk_buff *skb, int
- 		/* Connection association is same as pre-frag packet */
- 		skb2->nfct = skb->nfct;
- 		nf_conntrack_get(skb2->nfct);
-+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-+		skb2->nf_bridge = skb->nf_bridge;
-+		nf_bridge_get(skb2->nf_bridge);
-+#endif
- #ifdef CONFIG_NETFILTER_DEBUG
- 		skb2->nf_debug = skb->nf_debug;
- #endif
---- linux-2.4.31/net/ipv4/netfilter/ipt_LOG.c	2005-04-04 01:42:20.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/net/ipv4/netfilter/ipt_LOG.c	2005-09-15 16:57:23.000000000 +0000
-@@ -317,6 +317,18 @@ ipt_log_target(struct sk_buff **pskb,
- 	       loginfo->prefix,
- 	       in ? in->name : "",
- 	       out ? out->name : "");
-+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-+	if ((*pskb)->nf_bridge) {
-+		struct net_device *physindev = (*pskb)->nf_bridge->physindev;
-+		struct net_device *physoutdev = (*pskb)->nf_bridge->physoutdev;
-+
-+		if (physindev && in != physindev)
-+			printk("PHYSIN=%s ", physindev->name);
-+		if (physoutdev && out != physoutdev)
-+			printk("PHYSOUT=%s ", physoutdev->name);
-+	}
-+#endif
-+
- 	if (in && !out) {
- 		/* MAC logging for input chain only. */
- 		printk("MAC=");
---- linux-2.4.31/net/ipv4/netfilter/Makefile	2003-08-25 11:44:44.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/net/ipv4/netfilter/Makefile	2005-09-15 16:57:23.000000000 +0000
-@@ -87,6 +87,8 @@ obj-$(CONFIG_IP_NF_MATCH_CONNTRACK) += i
- obj-$(CONFIG_IP_NF_MATCH_UNCLEAN) += ipt_unclean.o
- obj-$(CONFIG_IP_NF_MATCH_TCPMSS) += ipt_tcpmss.o
- 
-+obj-$(CONFIG_IP_NF_MATCH_PHYSDEV) += ipt_physdev.o
-+
- # targets
- obj-$(CONFIG_IP_NF_TARGET_REJECT) += ipt_REJECT.o
- obj-$(CONFIG_IP_NF_TARGET_MIRROR) += ipt_MIRROR.o
---- linux-2.4.31/net/ipv4/netfilter/Config.in	2005-01-19 14:10:13.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/net/ipv4/netfilter/Config.in	2005-09-15 16:57:23.000000000 +0000
-@@ -44,6 +44,9 @@ if [ "$CONFIG_IP_NF_IPTABLES" != "n" ]; 
-     dep_tristate '  Unclean match support (EXPERIMENTAL)' CONFIG_IP_NF_MATCH_UNCLEAN $CONFIG_IP_NF_IPTABLES
-     dep_tristate '  Owner match support (EXPERIMENTAL)' CONFIG_IP_NF_MATCH_OWNER $CONFIG_IP_NF_IPTABLES
-   fi
-+  if [ "$CONFIG_BRIDGE" != "n" ]; then
-+    dep_tristate '  Physdev match support' CONFIG_IP_NF_MATCH_PHYSDEV $CONFIG_IP_NF_IPTABLES
-+  fi
- # The targets
-   dep_tristate '  Packet filtering' CONFIG_IP_NF_FILTER $CONFIG_IP_NF_IPTABLES 
-   if [ "$CONFIG_IP_NF_FILTER" != "n" ]; then
---- /dev/null	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/net/bridge/br_netfilter.c	2005-09-15 17:00:24.000000000 +0000
-@@ -0,0 +1,1102 @@
-+/*
-+ *	Handle firewalling
-+ *	Linux ethernet bridge
-+ *
-+ *	Authors:
-+ *	Lennert Buytenhek               <buytenh@gnu.org>
-+ *	Bart De Schuymer (maintainer)	<bdschuym@pandora.be>
-+ *
-+ *	Changes:
-+ *	Apr 29 2003: physdev module support (bdschuym)
-+ *	Jun 19 2003: let arptables see bridged ARP traffic (bdschuym)
-+ *	Oct 06 2003: filter encapsulated IP/ARP VLAN traffic on untagged bridge
-+ *	             (bdschuym)
-+ *	Aug 28 2004: add IPv6 filtering (bdschuym)
-+ *
-+ *	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.
-+ *
-+ *	Lennert dedicates this file to Kerstin Wurdinger.
-+ */
-+
-+#include <linux/module.h>
-+#include <linux/kernel.h>
-+#include <linux/ip.h>
-+#include <linux/netdevice.h>
-+#include <linux/skbuff.h>
-+#include <linux/if_ether.h>
-+#include <linux/if_vlan.h>
-+#include <linux/netfilter_bridge.h>
-+#include <linux/netfilter_ipv4.h>
-+#include <linux/netfilter_ipv6.h>
-+#include <linux/in_route.h>
-+#include <net/ip.h>
-+#include <net/ipv6.h>
-+#include <asm/uaccess.h>
-+#include <asm/checksum.h>
-+#include "br_private.h"
-+#ifdef CONFIG_SYSCTL
-+#include <linux/sysctl.h>
-+#endif
-+
-+#define skb_origaddr(skb)	 (((struct bridge_skb_cb *) \
-+				 (skb->nf_bridge->data))->daddr.ipv4)
-+#define store_orig_dstaddr(skb)	 (skb_origaddr(skb) = (skb)->nh.iph->daddr)
-+#define dnat_took_place(skb)	 (skb_origaddr(skb) != (skb)->nh.iph->daddr)
-+
-+#define has_bridge_parent(device)	((device)->br_port != NULL)
-+#define bridge_parent(device)		(&((device)->br_port->br->dev))
-+
-+#ifdef CONFIG_SYSCTL
-+static struct ctl_table_header *brnf_sysctl_header;
-+static int brnf_call_iptables = 1;
-+static int brnf_call_ip6tables = 1;
-+static int brnf_call_arptables = 1;
-+static int brnf_filter_vlan_tagged = 1;
-+#else
-+#define brnf_filter_vlan_tagged 1
-+#endif
-+
-+#define IS_VLAN_IP (skb->protocol == __constant_htons(ETH_P_8021Q) &&    \
-+	hdr->h_vlan_encapsulated_proto == __constant_htons(ETH_P_IP) &&  \
-+	brnf_filter_vlan_tagged)
-+#define IS_VLAN_IPV6 (skb->protocol == __constant_htons(ETH_P_8021Q) &&    \
-+	hdr->h_vlan_encapsulated_proto == __constant_htons(ETH_P_IPV6) &&  \
-+	brnf_filter_vlan_tagged)
-+/*
-+#define IS_VLAN_ARP (skb->protocol == __constant_htons(ETH_P_8021Q) &&   \
-+	hdr->h_vlan_encapsulated_proto == __constant_htons(ETH_P_ARP) && \
-+	brnf_filter_vlan_tagged)
-+*/
-+
-+/* We need these fake structures to make netfilter happy --
-+ * lots of places assume that skb->dst != NULL, which isn't
-+ * all that unreasonable.
-+ *
-+ * Currently, we fill in the PMTU entry because netfilter
-+ * refragmentation needs it, and the rt_flags entry because
-+ * ipt_REJECT needs it.  Future netfilter modules might
-+ * require us to fill additional fields.
-+ */
-+static struct net_device __fake_net_device = {
-+	.hard_header_len	= ETH_HLEN
-+};
-+
-+static struct rtable __fake_rtable = {
-+	u: {
-+		dst: {
-+			__refcnt:		ATOMIC_INIT(1),
-+			dev:			&__fake_net_device,
-+			pmtu:			1500
-+		}
-+	},
-+
-+	rt_flags:	0
-+};
-+
-+
-+/* PF_BRIDGE/PRE_ROUTING *********************************************/
-+/* Undo the changes made for ip6tables PREROUTING and continue the
-+ * bridge PRE_ROUTING hook. */
-+static int br_nf_pre_routing_finish_ipv6(struct sk_buff *skb)
-+{
-+	struct nf_bridge_info *nf_bridge = skb->nf_bridge;
-+
-+#ifdef CONFIG_NETFILTER_DEBUG
-+	skb->nf_debug ^= (1 << NF_BR_PRE_ROUTING);
-+#endif
-+
-+	if (nf_bridge->mask & BRNF_PKT_TYPE) {
-+		skb->pkt_type = PACKET_OTHERHOST;
-+		nf_bridge->mask ^= BRNF_PKT_TYPE;
-+	}
-+	nf_bridge->mask ^= BRNF_NF_BRIDGE_PREROUTING;
-+
-+	skb->dst = (struct dst_entry *)&__fake_rtable;
-+	dst_hold(skb->dst);
-+
-+	skb->dev = nf_bridge->physindev;
-+	if (skb->protocol == __constant_htons(ETH_P_8021Q)) {
-+		skb_push(skb, VLAN_HLEN);
-+		skb->nh.raw -= VLAN_HLEN;
-+	}
-+	NF_HOOK_THRESH(PF_BRIDGE, NF_BR_PRE_ROUTING, skb, skb->dev, NULL,
-+		       br_handle_frame_finish, 1);
-+
-+	return 0;
-+}
-+
-+static void __br_dnat_complain(void)
-+{
-+	static unsigned long last_complaint;
-+
-+	if (jiffies - last_complaint >= 5 * HZ) {
-+		printk(KERN_WARNING "Performing cross-bridge DNAT requires IP "
-+			"forwarding to be enabled\n");
-+		last_complaint = jiffies;
-+	}
-+}
-+
-+
-+/* This requires some explaining. If DNAT has taken place,
-+ * we will need to fix up the destination Ethernet address,
-+ * and this is a tricky process.
-+ *
-+ * There are two cases to consider:
-+ * 1. The packet was DNAT'ed to a device in the same bridge
-+ *    port group as it was received on. We can still bridge
-+ *    the packet.
-+ * 2. The packet was DNAT'ed to a different device, either
-+ *    a non-bridged device or another bridge port group.
-+ *    The packet will need to be routed.
-+ *
-+ * The correct way of distinguishing between these two cases is to
-+ * call ip_route_input() and to look at skb->dst->dev, which is
-+ * changed to the destination device if ip_route_input() succeeds.
-+ *
-+ * Let us first consider the case that ip_route_input() succeeds:
-+ *
-+ * If skb->dst->dev equals the logical bridge device the packet
-+ * came in on, we can consider this bridging. We then call
-+ * skb->dst->output() which will make the packet enter br_nf_local_out()
-+ * not much later. In that function it is assured that the iptables
-+ * FORWARD chain is traversed for the packet.
-+ *
-+ * Otherwise, the packet is considered to be routed and we just
-+ * change the destination MAC address so that the packet will
-+ * later be passed up to the IP stack to be routed.
-+ *
-+ * Let us now consider the case that ip_route_input() fails:
-+ *
-+ * After a "echo '0' > /proc/sys/net/ipv4/ip_forward" ip_route_input()
-+ * will fail, while __ip_route_output_key() will return success. The source
-+ * address for __ip_route_output_key() is set to zero, so __ip_route_output_key
-+ * thinks we're handling a locally generated packet and won't care
-+ * if IP forwarding is allowed. We send a warning message to the users's
-+ * log telling her to put IP forwarding on.
-+ *
-+ * ip_route_input() will also fail if there is no route available.
-+ * In that case we just drop the packet.
-+ *
-+ * --Lennert, 20020411
-+ * --Bart, 20020416 (updated)
-+ * --Bart, 20021007 (updated)
-+ */
-+
-+static int br_nf_pre_routing_finish_bridge(struct sk_buff *skb)
-+{
-+#ifdef CONFIG_NETFILTER_DEBUG
-+	skb->nf_debug |= (1 << NF_BR_PRE_ROUTING) | (1 << NF_BR_FORWARD);
-+#endif
-+
-+	if (skb->pkt_type == PACKET_OTHERHOST) {
-+		skb->pkt_type = PACKET_HOST;
-+		skb->nf_bridge->mask |= BRNF_PKT_TYPE;
-+	}
-+	skb->nf_bridge->mask ^= BRNF_NF_BRIDGE_PREROUTING;
-+
-+	skb->dev = bridge_parent(skb->dev);
-+	if (skb->protocol == __constant_htons(ETH_P_8021Q)) {
-+		skb_pull(skb, VLAN_HLEN);
-+		skb->nh.raw += VLAN_HLEN;
-+	}
-+	skb->dst->output(skb);
-+	return 0;
-+}
-+
-+static int br_nf_pre_routing_finish(struct sk_buff *skb)
-+{
-+	struct net_device *dev = skb->dev;
-+	struct iphdr *iph = skb->nh.iph;
-+	struct nf_bridge_info *nf_bridge = skb->nf_bridge;
-+
-+#ifdef CONFIG_NETFILTER_DEBUG
-+	skb->nf_debug ^= (1 << NF_BR_PRE_ROUTING);
-+#endif
-+
-+	if (nf_bridge->mask & BRNF_PKT_TYPE) {
-+		skb->pkt_type = PACKET_OTHERHOST;
-+		nf_bridge->mask ^= BRNF_PKT_TYPE;
-+	}
-+	nf_bridge->mask ^= BRNF_NF_BRIDGE_PREROUTING;
-+
-+	if (dnat_took_place(skb)) {
-+		if (ip_route_input(skb, iph->daddr, iph->saddr, iph->tos,
-+		    dev)) {
-+			struct rtable *rt;
-+
-+			if (!ip_route_output(&rt, iph->daddr, 0, iph->tos, 0)) {
-+				/* - Bridged-and-DNAT'ed traffic doesn't
-+				 *   require ip_forwarding.
-+				 * - Deal with redirected traffic. */
-+				if (((struct dst_entry *)rt)->dev == dev ||
-+				    rt->rt_type == RTN_LOCAL) {
-+					skb->dst = (struct dst_entry *)rt;
-+					goto bridged_dnat;
-+				}
-+				__br_dnat_complain();
-+				dst_release((struct dst_entry *)rt);
-+			}
-+			kfree_skb(skb);
-+			return 0;
-+		} else {
-+			if (skb->dst->dev == dev) {
-+bridged_dnat:
-+				/* Tell br_nf_local_out this is a
-+				 * bridged frame
-+				 */
-+				nf_bridge->mask |= BRNF_BRIDGED_DNAT;
-+				skb->dev = nf_bridge->physindev;
-+				if (skb->protocol ==
-+				    __constant_htons(ETH_P_8021Q)) {
-+					skb_push(skb, VLAN_HLEN);
-+					skb->nh.raw -= VLAN_HLEN;
-+				}
-+				NF_HOOK_THRESH(PF_BRIDGE, NF_BR_PRE_ROUTING,
-+					       skb, skb->dev, NULL,
-+					       br_nf_pre_routing_finish_bridge,
-+					       1);
-+				return 0;
-+			}
-+			memcpy(skb->mac.ethernet->h_dest, dev->dev_addr,
-+			       ETH_ALEN);
-+			skb->pkt_type = PACKET_HOST;
-+		}
-+	} else {
-+		skb->dst = (struct dst_entry *)&__fake_rtable;
-+		dst_hold(skb->dst);
-+	}
-+
-+	skb->dev = nf_bridge->physindev;
-+	if (skb->protocol == __constant_htons(ETH_P_8021Q)) {
-+		skb_push(skb, VLAN_HLEN);
-+		skb->nh.raw -= VLAN_HLEN;
-+	}
-+	NF_HOOK_THRESH(PF_BRIDGE, NF_BR_PRE_ROUTING, skb, skb->dev, NULL,
-+		       br_handle_frame_finish, 1);
-+
-+	return 0;
-+}
-+
-+/* Some common code for IPv4/IPv6 */
-+static void setup_pre_routing(struct sk_buff *skb)
-+{
-+	struct nf_bridge_info *nf_bridge = skb->nf_bridge;
-+
-+	if (skb->pkt_type == PACKET_OTHERHOST) {
-+		skb->pkt_type = PACKET_HOST;
-+		nf_bridge->mask |= BRNF_PKT_TYPE;
-+	}
-+
-+	nf_bridge->mask |= BRNF_NF_BRIDGE_PREROUTING;
-+	nf_bridge->physindev = skb->dev;
-+	skb->dev = bridge_parent(skb->dev);
-+}
-+
-+/* We only check the length. A bridge shouldn't do any hop-by-hop stuff anyway */
-+static int check_hbh_len(struct sk_buff *skb)
-+{
-+	unsigned char *raw = (u8*)(skb->nh.ipv6h+1);
-+	u32 pkt_len;
-+	int off = raw - skb->nh.raw;
-+	int len = (raw[1]+1)<<3;
-+
-+	if ((raw + len) - skb->data > skb_headlen(skb))
-+		goto bad;
-+
-+	off += 2;
-+	len -= 2;
-+
-+	while (len > 0) {
-+		int optlen = raw[off+1]+2;
-+
-+		switch (skb->nh.raw[off]) {
-+		case IPV6_TLV_PAD0:
-+			optlen = 1;
-+			break;
-+
-+		case IPV6_TLV_PADN:
-+			break;
-+
-+		case IPV6_TLV_JUMBO:
-+			if (skb->nh.raw[off+1] != 4 || (off&3) != 2)
-+				goto bad;
-+
-+			pkt_len = ntohl(*(u32*)(skb->nh.raw+off+2));
-+
-+			if (pkt_len > skb->len - sizeof(struct ipv6hdr))
-+				goto bad;
-+			if (pkt_len + sizeof(struct ipv6hdr) < skb->len) {
-+				if (__pskb_trim(skb,
-+				    pkt_len + sizeof(struct ipv6hdr)))
-+					goto bad;
-+				if (skb->ip_summed == CHECKSUM_HW)
-+					skb->ip_summed = CHECKSUM_NONE;
-+			}
-+			break;
-+		default:
-+			if (optlen > len)
-+				goto bad;
-+			break;
-+		}
-+		off += optlen;
-+		len -= optlen;
-+	}
-+	if (len == 0)
-+		return 0;
-+bad:
-+	return -1;
-+
-+}
-+
-+/* Replicate the checks that IPv6 does on packet reception and pass the packet
-+ * to ip6tables, which doesn't support NAT, so things are fairly simple. */
-+static unsigned int br_nf_pre_routing_ipv6(unsigned int hook,
-+   struct sk_buff *skb, const struct net_device *in,
-+   const struct net_device *out, int (*okfn)(struct sk_buff *))
-+{
-+	struct ipv6hdr *hdr;
-+	u32 pkt_len;
-+	struct nf_bridge_info *nf_bridge;
-+
-+	if (skb->len < sizeof(struct ipv6hdr))
-+		goto inhdr_error;
-+
-+	if (!pskb_may_pull(skb, sizeof(struct ipv6hdr)))
-+		goto inhdr_error;
-+
-+	hdr = skb->nh.ipv6h;
-+
-+	if (hdr->version != 6)
-+		goto inhdr_error;
-+
-+	pkt_len = ntohs(hdr->payload_len);
-+
-+	if (pkt_len || hdr->nexthdr != NEXTHDR_HOP) {
-+		if (pkt_len + sizeof(struct ipv6hdr) > skb->len)
-+			goto inhdr_error;
-+		if (pkt_len + sizeof(struct ipv6hdr) < skb->len) {
-+			if (__pskb_trim(skb, pkt_len + sizeof(struct ipv6hdr)))
-+				goto inhdr_error;
-+			if (skb->ip_summed == CHECKSUM_HW)
-+				skb->ip_summed = CHECKSUM_NONE;
-+		}
-+	}
-+	if (hdr->nexthdr == NEXTHDR_HOP && check_hbh_len(skb))
-+		goto inhdr_error;
-+
-+#ifdef CONFIG_NETFILTER_DEBUG
-+	skb->nf_debug ^= (1 << NF_IP6_PRE_ROUTING);
-+#endif
-+	if ((nf_bridge = nf_bridge_alloc(skb)) == NULL)
-+		return NF_DROP;
-+	setup_pre_routing(skb);
-+
-+	NF_HOOK(PF_INET6, NF_IP6_PRE_ROUTING, skb, skb->dev, NULL,
-+		br_nf_pre_routing_finish_ipv6);
-+
-+	return NF_STOLEN;
-+
-+inhdr_error:
-+	return NF_DROP;
-+}
-+
-+/* Direct IPv6 traffic to br_nf_pre_routing_ipv6.
-+ * Replicate the checks that IPv4 does on packet reception.
-+ * Set skb->dev to the bridge device (i.e. parent of the
-+ * receiving device) to make netfilter happy, the REDIRECT
-+ * target in particular.  Save the original destination IP
-+ * address to be able to detect DNAT afterwards.
-+ */
-+static unsigned int br_nf_pre_routing(unsigned int hook, struct sk_buff **pskb,
-+   const struct net_device *in, const struct net_device *out,
-+   int (*okfn)(struct sk_buff *))
-+{
-+	struct iphdr *iph;
-+	__u32 len;
-+	struct sk_buff *skb = *pskb;
-+	struct nf_bridge_info *nf_bridge;
-+	struct vlan_ethhdr *hdr = (struct vlan_ethhdr *)
-+				   ((*pskb)->mac.ethernet);
-+ 
-+	if (skb->protocol == __constant_htons(ETH_P_IPV6) || IS_VLAN_IPV6) {
-+#ifdef CONFIG_SYSCTL
-+		if (!brnf_call_ip6tables)
-+			return NF_ACCEPT;
-+#endif
-+		if ((skb = skb_share_check(*pskb, GFP_ATOMIC)) == NULL)
-+			goto out;
-+
-+		if (skb->protocol == __constant_htons(ETH_P_8021Q)) {
-+			skb_pull(skb, VLAN_HLEN);
-+			(skb)->nh.raw += VLAN_HLEN;
-+		}
-+		return br_nf_pre_routing_ipv6(hook, skb, in, out, okfn);
-+	}
-+
-+#ifdef CONFIG_SYSCTL
-+	if (!brnf_call_iptables)
-+		return NF_ACCEPT;
-+#endif
-+
-+	if (skb->protocol != __constant_htons(ETH_P_IP) && !IS_VLAN_IP)
-+		return NF_ACCEPT;
-+	if ((skb = skb_share_check(*pskb, GFP_ATOMIC)) == NULL)
-+		goto out;
-+ 
-+	if (skb->protocol == __constant_htons(ETH_P_8021Q)) {
-+		skb_pull(skb, VLAN_HLEN);
-+		(skb)->nh.raw += VLAN_HLEN;
-+	}
-+
-+	if (!pskb_may_pull(skb, sizeof(struct iphdr)))
-+		goto inhdr_error;
-+
-+	iph = skb->nh.iph;
-+	if (iph->ihl < 5 || iph->version != 4)
-+		goto inhdr_error;
-+
-+	if (!pskb_may_pull(skb, 4*iph->ihl))
-+		goto inhdr_error;
-+
-+	iph = skb->nh.iph;
-+	if (ip_fast_csum((__u8 *)iph, iph->ihl) != 0)
-+		goto inhdr_error;
-+
-+	len = ntohs(iph->tot_len);
-+	if (skb->len < len || len < 4*iph->ihl)
-+		goto inhdr_error;
-+
-+	if (skb->len > len) {
-+		__pskb_trim(skb, len);
-+		if (skb->ip_summed == CHECKSUM_HW)
-+			skb->ip_summed = CHECKSUM_NONE;
-+	}
-+
-+#ifdef CONFIG_NETFILTER_DEBUG
-+	skb->nf_debug ^= (1 << NF_IP_PRE_ROUTING);
-+#endif
-+	if ((nf_bridge = nf_bridge_alloc(skb)) == NULL)
-+		return NF_DROP;
-+
-+	setup_pre_routing(skb);
-+	store_orig_dstaddr(skb);
-+
-+	NF_HOOK(PF_INET, NF_IP_PRE_ROUTING, skb, skb->dev, NULL,
-+		br_nf_pre_routing_finish);
-+
-+	return NF_STOLEN;
-+
-+inhdr_error:
-+//	IP_INC_STATS_BH(IpInHdrErrors);
-+out:
-+	return NF_DROP;
-+}
-+
-+
-+/* PF_BRIDGE/LOCAL_IN ************************************************/
-+/* The packet is locally destined, which requires a real
-+ * dst_entry, so detach the fake one.  On the way up, the
-+ * packet would pass through PRE_ROUTING again (which already
-+ * took place when the packet entered the bridge), but we
-+ * register an IPv4 PRE_ROUTING 'sabotage' hook that will
-+ * prevent this from happening.
-+ */
-+static unsigned int br_nf_local_in(unsigned int hook, struct sk_buff **pskb,
-+   const struct net_device *in, const struct net_device *out,
-+   int (*okfn)(struct sk_buff *))
-+{
-+	struct sk_buff *skb = *pskb;
-+
-+	if (skb->dst == (struct dst_entry *)&__fake_rtable) {
-+		dst_release(skb->dst);
-+		skb->dst = NULL;
-+	}
-+
-+	return NF_ACCEPT;
-+}
-+
-+/* PF_BRIDGE/FORWARD *************************************************/
-+static int br_nf_forward_finish(struct sk_buff *skb)
-+{
-+	struct nf_bridge_info *nf_bridge = skb->nf_bridge;
-+	struct net_device *in;
-+/*	struct vlan_ethhdr *hdr = (struct vlan_ethhdr *)(skb->mac.ethernet);*/
-+
-+#ifdef CONFIG_NETFILTER_DEBUG
-+	skb->nf_debug ^= (1 << NF_BR_FORWARD);
-+#endif
-+
-+/*	if (skb->protocol != __constant_htons(ETH_P_ARP) && !IS_VLAN_ARP) {*/
-+		in = nf_bridge->physindev;
-+		if (nf_bridge->mask & BRNF_PKT_TYPE) {
-+			skb->pkt_type = PACKET_OTHERHOST;
-+			nf_bridge->mask ^= BRNF_PKT_TYPE;
-+		}
-+/*	} else {
-+		in = *((struct net_device **)(skb->cb));
-+	}*/
-+	if (skb->protocol == __constant_htons(ETH_P_8021Q)) {
-+		skb_push(skb, VLAN_HLEN);
-+		skb->nh.raw -= VLAN_HLEN;
-+	}
-+	NF_HOOK_THRESH(PF_BRIDGE, NF_BR_FORWARD, skb, in,
-+			skb->dev, br_forward_finish, 1);
-+	return 0;
-+}
-+
-+/* This is the 'purely bridged' case.  For IP, we pass the packet to
-+ * netfilter with indev and outdev set to the bridge device,
-+ * but we are still able to filter on the 'real' indev/outdev
-+ * because of the ipt_physdev.c module. For ARP, indev and outdev are the
-+ * bridge ports.
-+ */
-+static unsigned int br_nf_forward_ip(unsigned int hook, struct sk_buff **pskb,
-+   const struct net_device *in, const struct net_device *out,
-+   int (*okfn)(struct sk_buff *))
-+{
-+	struct sk_buff *skb = *pskb;
-+	struct nf_bridge_info *nf_bridge;
-+	struct vlan_ethhdr *hdr = (struct vlan_ethhdr *)(skb->mac.ethernet);
-+	int pf;
-+
-+	if (!skb->nf_bridge)
-+		return NF_ACCEPT;
-+
-+	if (skb->protocol == __constant_htons(ETH_P_IP) || IS_VLAN_IP)
-+		pf = PF_INET;
-+	else
-+		pf = PF_INET6;
-+
-+	if (skb->protocol == __constant_htons(ETH_P_8021Q)) {
-+		skb_pull(*pskb, VLAN_HLEN);
-+		(*pskb)->nh.raw += VLAN_HLEN;
-+	}
-+
-+#ifdef CONFIG_NETFILTER_DEBUG
-+	skb->nf_debug ^= (1 << NF_BR_FORWARD);
-+#endif
-+	nf_bridge = skb->nf_bridge;
-+	if (skb->pkt_type == PACKET_OTHERHOST) {
-+		skb->pkt_type = PACKET_HOST;
-+		nf_bridge->mask |= BRNF_PKT_TYPE;
-+	}
-+
-+	/* The physdev module checks on this */
-+	nf_bridge->mask |= BRNF_BRIDGED;
-+	nf_bridge->physoutdev = skb->dev;
-+
-+	NF_HOOK(pf, NF_IP_FORWARD, skb, bridge_parent(in),
-+		bridge_parent(out), br_nf_forward_finish);
-+
-+	return NF_STOLEN;
-+}
-+
-+/*
-+static unsigned int br_nf_forward_arp(unsigned int hook, struct sk_buff **pskb,
-+   const struct net_device *in, const struct net_device *out,
-+   int (*okfn)(struct sk_buff *))
-+{
-+	struct sk_buff *skb = *pskb;
-+	struct vlan_ethhdr *hdr = (struct vlan_ethhdr *)(skb->mac.ethernet);
-+	struct net_device **d = (struct net_device **)(skb->cb);
-+
-+	if (!brnf_call_arptables)
-+		return NF_ACCEPT;
-+
-+	if (skb->protocol != __constant_htons(ETH_P_ARP)) {
-+		if (!IS_VLAN_ARP)
-+			return NF_ACCEPT;
-+		skb_pull(*pskb, VLAN_HLEN);
-+		(*pskb)->nh.raw += VLAN_HLEN;
-+	}
-+
-+#ifdef CONFIG_NETFILTER_DEBUG
-+	skb->nf_debug ^= (1 << NF_BR_FORWARD);
-+#endif
-+
-+	if (skb->nh.arph->ar_pln != 4) {
-+		if (IS_VLAN_ARP) {
-+			skb_push(*pskb, VLAN_HLEN);
-+			(*pskb)->nh.raw -= VLAN_HLEN;
-+		}
-+		return NF_ACCEPT;
-+	}
-+	*d = (struct net_device *)in;
-+	NF_HOOK(NF_ARP, NF_ARP_FORWARD, skb, (struct net_device *)in,
-+		(struct net_device *)out, br_nf_forward_finish);
-+
-+	return NF_STOLEN;
-+}
-+*/
-+
-+/* PF_BRIDGE/LOCAL_OUT ***********************************************/
-+static int br_nf_local_out_finish(struct sk_buff *skb)
-+{
-+#ifdef CONFIG_NETFILTER_DEBUG
-+	skb->nf_debug &= ~(1 << NF_BR_LOCAL_OUT);
-+#endif
-+	if (skb->protocol == __constant_htons(ETH_P_8021Q)) {
-+		skb_push(skb, VLAN_HLEN);
-+		skb->nh.raw -= VLAN_HLEN;
-+	}
-+
-+	NF_HOOK_THRESH(PF_BRIDGE, NF_BR_LOCAL_OUT, skb, NULL, skb->dev,
-+			br_forward_finish, NF_BR_PRI_FIRST + 1);
-+
-+	return 0;
-+}
-+
-+
-+/* This function sees both locally originated IP packets and forwarded
-+ * IP packets (in both cases the destination device is a bridge
-+ * device). It also sees bridged-and-DNAT'ed packets.
-+ * To be able to filter on the physical bridge devices (with the ipt_physdev.c
-+ * module), we steal packets destined to a bridge device away from the
-+ * PF_INET/FORWARD and PF_INET/OUTPUT hook functions, and give them back later,
-+ * when we have determined the real output device. This is done in here.
-+ *
-+ * If (nf_bridge->mask & BRNF_BRIDGED_DNAT) then the packet is bridged
-+ * and we fake the PF_BRIDGE/FORWARD hook. The function br_nf_forward()
-+ * will then fake the PF_INET/FORWARD hook. br_nf_local_out() has priority
-+ * NF_BR_PRI_FIRST, so no relevant PF_BRIDGE/INPUT functions have been nor
-+ * will be executed.
-+ * Otherwise, if nf_bridge->physindev is NULL, the bridge-nf code never touched
-+ * this packet before, and so the packet was locally originated. We fake
-+ * the PF_INET/LOCAL_OUT hook.
-+ * Finally, if nf_bridge->physindev isn't NULL, then the packet was IP routed,
-+ * so we fake the PF_INET/FORWARD hook. ipv4_sabotage_out() makes sure
-+ * even routed packets that didn't arrive on a bridge interface have their
-+ * nf_bridge->physindev set.
-+ */
-+
-+static unsigned int br_nf_local_out(unsigned int hook, struct sk_buff **pskb,
-+   const struct net_device *in, const struct net_device *out,
-+   int (*okfn)(struct sk_buff *))
-+{
-+	struct net_device *realindev, *realoutdev;
-+	struct sk_buff *skb = *pskb;
-+	struct nf_bridge_info *nf_bridge;
-+	struct vlan_ethhdr *hdr = (struct vlan_ethhdr *)(skb->mac.ethernet);
-+	int pf;
-+
-+	if (!skb->nf_bridge)
-+		return NF_ACCEPT;
-+
-+	if (skb->protocol == __constant_htons(ETH_P_IP) || IS_VLAN_IP)
-+		pf = PF_INET;
-+	else
-+		pf = PF_INET6;
-+ 
-+#ifdef CONFIG_NETFILTER_DEBUG
-+	/* Sometimes we get packets with NULL ->dst here (for example,
-+	 * running a dhcp client daemon triggers this). This should now
-+	 * be fixed, but let's keep the check around. */
-+	if (skb->dst == NULL) {
-+		printk(KERN_CRIT "br_netfilter: skb->dst == NULL.");
-+		return NF_ACCEPT;
-+	}
-+#endif
-+
-+	nf_bridge = skb->nf_bridge;
-+	nf_bridge->physoutdev = skb->dev;
-+	realindev = nf_bridge->physindev;
-+
-+	/* Bridged, take PF_BRIDGE/FORWARD.
-+	 * (see big note in front of br_nf_pre_routing_finish)
-+	 */
-+	if (nf_bridge->mask & BRNF_BRIDGED_DNAT) {
-+		if (nf_bridge->mask & BRNF_PKT_TYPE) {
-+			skb->pkt_type = PACKET_OTHERHOST;
-+			nf_bridge->mask ^= BRNF_PKT_TYPE;
-+		}
-+		if (skb->protocol == __constant_htons(ETH_P_8021Q)) {
-+			skb_push(skb, VLAN_HLEN);
-+			skb->nh.raw -= VLAN_HLEN;
-+		}
-+
-+		NF_HOOK(PF_BRIDGE, NF_BR_FORWARD, skb, realindev,
-+			skb->dev, br_forward_finish);
-+		goto out;
-+	}
-+	realoutdev = bridge_parent(skb->dev);
-+
-+#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
-+	/* iptables should match -o br0.x */
-+	if (nf_bridge->netoutdev)
-+		realoutdev = nf_bridge->netoutdev;
-+#endif
-+	if (skb->protocol == __constant_htons(ETH_P_8021Q)) {
-+		skb_pull(skb, VLAN_HLEN);
-+		(*pskb)->nh.raw += VLAN_HLEN;
-+	}
-+	/* IP forwarded traffic has a physindev, locally
-+	 * generated traffic hasn't.
-+	 */
-+	if (realindev != NULL) {
-+		if (((nf_bridge->mask & BRNF_DONT_TAKE_PARENT) == 0) &&
-+		    has_bridge_parent(realindev))
-+			realindev = bridge_parent(realindev);
-+		NF_HOOK_THRESH(pf, NF_IP_FORWARD, skb, realindev,
-+			       realoutdev, okfn,
-+			       NF_IP_PRI_BRIDGE_SABOTAGE_FORWARD + 1);
-+	} else {
-+#ifdef CONFIG_NETFILTER_DEBUG
-+		skb->nf_debug ^= (1 << NF_IP_LOCAL_OUT);
-+#endif
-+
-+		NF_HOOK_THRESH(pf, NF_IP_LOCAL_OUT, skb, realindev,
-+			       realoutdev, okfn,
-+			       NF_IP_PRI_BRIDGE_SABOTAGE_LOCAL_OUT + 1);
-+	}
-+
-+out:
-+	return NF_STOLEN;
-+}
-+
-+
-+/* PF_BRIDGE/POST_ROUTING ********************************************/
-+static unsigned int br_nf_post_routing(unsigned int hook, struct sk_buff **pskb,
-+   const struct net_device *in, const struct net_device *out,
-+   int (*okfn)(struct sk_buff *))
-+{
-+	struct sk_buff *skb = *pskb;
-+	struct nf_bridge_info *nf_bridge = (*pskb)->nf_bridge;
-+	struct vlan_ethhdr *hdr = (struct vlan_ethhdr *)(skb->mac.ethernet);
-+	struct net_device *realoutdev = bridge_parent(skb->dev);
-+	int pf;
-+
-+#ifdef CONFIG_NETFILTER_DEBUG
-+	/* Be very paranoid. This probably won't happen anymore, but let's
-+	 * keep the check just to be sure... */
-+	if (skb->mac.raw < skb->head || skb->mac.raw + ETH_HLEN > skb->data) {
-+		printk(KERN_CRIT "br_netfilter: Argh!! br_nf_post_routing: "
-+				 "bad mac.raw pointer.");
-+		goto print_error;
-+	}
-+#endif
-+
-+	if (!nf_bridge)
-+		return NF_ACCEPT;
-+
-+	if (skb->protocol == __constant_htons(ETH_P_IP) || IS_VLAN_IP)
-+		pf = PF_INET;
-+	else
-+		pf = PF_INET6;
-+
-+	/* Sometimes we get packets with NULL ->dst here (for example,
-+	 * running a dhcp client daemon triggers this).
-+	 */
-+	if (skb->dst == NULL)
-+		return NF_ACCEPT;
-+
-+#ifdef CONFIG_NETFILTER_DEBUG
-+	/* Sometimes we get packets with NULL ->dst here (for example,
-+	 * running a dhcp client daemon triggers this). This should now
-+	 * be fixed, but let's keep the check around.
-+	 */
-+	if (skb->dst == NULL) {
-+		printk(KERN_CRIT "br_netfilter: skb->dst == NULL.");
-+		goto print_error;
-+	}
-+
-+	skb->nf_debug ^= (1 << NF_IP_POST_ROUTING);
-+#endif
-+
-+	/* We assume any code from br_dev_queue_push_xmit onwards doesn't care
-+	 * about the value of skb->pkt_type.
-+	 */
-+	if (skb->pkt_type == PACKET_OTHERHOST) {
-+		skb->pkt_type = PACKET_HOST;
-+		nf_bridge->mask |= BRNF_PKT_TYPE;
-+	}
-+
-+	if (skb->protocol == __constant_htons(ETH_P_8021Q)) {
-+		skb_pull(skb, VLAN_HLEN);
-+		skb->nh.raw += VLAN_HLEN;
-+	}
-+
-+	nf_bridge_save_header(skb);
-+
-+#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
-+	if (nf_bridge->netoutdev)
-+		realoutdev = nf_bridge->netoutdev;
-+#endif
-+	NF_HOOK(pf, NF_IP_POST_ROUTING, skb, NULL,
-+		realoutdev, br_dev_queue_push_xmit);
-+
-+	return NF_STOLEN;
-+
-+#ifdef CONFIG_NETFILTER_DEBUG
-+print_error:
-+	if (skb->dev != NULL) {
-+		printk("[%s]", skb->dev->name);
-+		if (has_bridge_parent(skb->dev))
-+			printk("[%s]", bridge_parent(skb->dev)->name);
-+	}
-+	printk(" head:%p, raw:%p, data:%p\n", skb->head, skb->mac.raw,
-+					      skb->data);
-+	return NF_ACCEPT;
-+#endif
-+}
-+
-+
-+/* IPv4/SABOTAGE *****************************************************/
-+
-+/* Don't hand locally destined packets to PF_INET/PRE_ROUTING
-+ * for the second time.
-+ */
-+static unsigned int ip_sabotage_in(unsigned int hook, struct sk_buff **pskb,
-+   const struct net_device *in, const struct net_device *out,
-+   int (*okfn)(struct sk_buff *))
-+{
-+	if ((*pskb)->nf_bridge &&
-+	    !((*pskb)->nf_bridge->mask & BRNF_NF_BRIDGE_PREROUTING)) {
-+		return NF_STOP;
-+	}
-+
-+	return NF_ACCEPT;
-+}
-+
-+/* Postpone execution of PF_INET/FORWARD, PF_INET/LOCAL_OUT
-+ * and PF_INET/POST_ROUTING until we have done the forwarding
-+ * decision in the bridge code and have determined skb->physoutdev.
-+ */
-+static unsigned int ip_sabotage_out(unsigned int hook, struct sk_buff **pskb,
-+   const struct net_device *in, const struct net_device *out,
-+   int (*okfn)(struct sk_buff *))
-+{
-+	struct sk_buff *skb = *pskb;
-+
-+	if ((out->hard_start_xmit == br_dev_xmit &&
-+	    okfn != br_nf_forward_finish &&
-+	    okfn != br_nf_local_out_finish &&
-+	    okfn != br_dev_queue_push_xmit)
-+#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
-+	    || ((out->priv_flags & IFF_802_1Q_VLAN) &&
-+	    VLAN_DEV_INFO(out)->real_dev->hard_start_xmit == br_dev_xmit)
-+#endif
-+	    ) {
-+		struct nf_bridge_info *nf_bridge;
-+
-+		if (!skb->nf_bridge) {
-+#ifdef CONFIG_SYSCTL
-+			/* This code is executed while in the IP(v6) stack,
-+			   the version should be 4 or 6. We can't use
-+			   skb->protocol because that isn't set on
-+			   PF_INET(6)/LOCAL_OUT. */
-+			struct iphdr *ip = skb->nh.iph;
-+
-+			if (ip->version == 4 && !brnf_call_iptables)
-+				return NF_ACCEPT;
-+			else if (ip->version == 6 && !brnf_call_ip6tables)
-+				return NF_ACCEPT;
-+#endif
-+			if (hook == NF_IP_POST_ROUTING)
-+				return NF_ACCEPT;
-+			if (!nf_bridge_alloc(skb))
-+				return NF_DROP;
-+		}
-+
-+		nf_bridge = skb->nf_bridge;
-+
-+		/* This frame will arrive on PF_BRIDGE/LOCAL_OUT and we
-+		 * will need the indev then. For a brouter, the real indev
-+		 * can be a bridge port, so we make sure br_nf_local_out()
-+		 * doesn't use the bridge parent of the indev by using
-+		 * the BRNF_DONT_TAKE_PARENT mask.
-+		 */
-+		if (hook == NF_IP_FORWARD && nf_bridge->physindev == NULL) {
-+			nf_bridge->mask &= BRNF_DONT_TAKE_PARENT;
-+			nf_bridge->physindev = (struct net_device *)in;
-+		}
-+#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
-+		/* the iptables outdev is br0.x, not br0 */
-+		if (out->priv_flags & IFF_802_1Q_VLAN)
-+			nf_bridge->netoutdev = (struct net_device *)out;
-+#endif
-+		return NF_STOP;
-+	}
-+
-+	return NF_ACCEPT;
-+}
-+
-+/* For br_nf_local_out we need (prio = NF_BR_PRI_FIRST), to insure that innocent
-+ * PF_BRIDGE/NF_BR_LOCAL_OUT functions don't get bridged traffic as input.
-+ * For br_nf_post_routing, we need (prio = NF_BR_PRI_LAST), because
-+ * ip_refrag() can return NF_STOLEN.
-+ */
-+static struct nf_hook_ops br_nf_ops[] = {
-+	{ .hook = br_nf_pre_routing, 
-+	  .pf = PF_BRIDGE, 
-+	  .hooknum = NF_BR_PRE_ROUTING, 
-+	  .priority = NF_BR_PRI_BRNF, },
-+	{ .hook = br_nf_local_in,
-+	  .pf = PF_BRIDGE,
-+	  .hooknum = NF_BR_LOCAL_IN,
-+	  .priority = NF_BR_PRI_BRNF, },
-+	{ .hook = br_nf_forward_ip,
-+	  .pf = PF_BRIDGE,
-+	  .hooknum = NF_BR_FORWARD,
-+	  .priority = NF_BR_PRI_BRNF /*- 1*/, },
-+/*	{ .hook = br_nf_forward_arp,
-+	  .pf = PF_BRIDGE,
-+	  .hooknum = NF_BR_FORWARD,
-+	  .priority = NF_BR_PRI_BRNF, },*/
-+	{ .hook = br_nf_local_out,
-+	  .pf = PF_BRIDGE,
-+	  .hooknum = NF_BR_LOCAL_OUT,
-+	  .priority = NF_BR_PRI_FIRST, },
-+	{ .hook = br_nf_post_routing,
-+	  .pf = PF_BRIDGE,
-+	  .hooknum = NF_BR_POST_ROUTING,
-+	  .priority = NF_BR_PRI_LAST, },
-+	{ .hook = ip_sabotage_in,
-+	  .pf = PF_INET,
-+	  .hooknum = NF_IP_PRE_ROUTING,
-+	  .priority = NF_IP_PRI_FIRST, },
-+	{ .hook = ip_sabotage_in,
-+	  .pf = PF_INET6,
-+	  .hooknum = NF_IP6_PRE_ROUTING,
-+	  .priority = NF_IP6_PRI_FIRST, },
-+	{ .hook = ip_sabotage_out,
-+	  .pf = PF_INET,
-+	  .hooknum = NF_IP_FORWARD,
-+	  .priority = NF_IP_PRI_BRIDGE_SABOTAGE_FORWARD, },
-+	{ .hook = ip_sabotage_out,
-+	  .pf = PF_INET6,
-+	  .hooknum = NF_IP6_FORWARD,
-+	  .priority = NF_IP6_PRI_BRIDGE_SABOTAGE_FORWARD, },
-+	{ .hook = ip_sabotage_out,
-+	  .pf = PF_INET,
-+	  .hooknum = NF_IP_LOCAL_OUT,
-+	  .priority = NF_IP_PRI_BRIDGE_SABOTAGE_LOCAL_OUT, },
-+	{ .hook = ip_sabotage_out,
-+	  .pf = PF_INET6,
-+	  .hooknum = NF_IP6_LOCAL_OUT,
-+	  .priority = NF_IP6_PRI_BRIDGE_SABOTAGE_LOCAL_OUT, },
-+	{ .hook = ip_sabotage_out,
-+	  .pf = PF_INET,
-+	  .hooknum = NF_IP_POST_ROUTING,
-+	  .priority = NF_IP_PRI_FIRST, },
-+	{ .hook = ip_sabotage_out,
-+	  .pf = PF_INET6,
-+	  .hooknum = NF_IP6_POST_ROUTING,
-+	  .priority = NF_IP6_PRI_FIRST, },
-+};
-+
-+#ifdef CONFIG_SYSCTL
-+static
-+int brnf_sysctl_call_tables(ctl_table *ctl, int write, struct file * filp,
-+			void *buffer, size_t *lenp)
-+{
-+	int ret;
-+
-+	ret = proc_dointvec(ctl, write, filp, buffer, lenp);
-+
-+	if (write && *(int *)(ctl->data))
-+		*(int *)(ctl->data) = 1;
-+	return ret;
-+}
-+
-+static ctl_table brnf_table[] = {
-+	{
-+		.ctl_name	= NET_BRIDGE_NF_CALL_ARPTABLES,
-+		.procname	= "bridge-nf-call-arptables",
-+		.data		= &brnf_call_arptables,
-+		.maxlen		= sizeof(int),
-+		.mode		= 0644,
-+		.proc_handler	= &brnf_sysctl_call_tables,
-+	},
-+	{
-+		.ctl_name	= NET_BRIDGE_NF_CALL_IPTABLES,
-+		.procname	= "bridge-nf-call-iptables",
-+		.data		= &brnf_call_iptables,
-+		.maxlen		= sizeof(int),
-+		.mode		= 0644,
-+		.proc_handler	= &brnf_sysctl_call_tables,
-+	},
-+	{
-+		.ctl_name	= NET_BRIDGE_NF_CALL_IP6TABLES,
-+		.procname	= "bridge-nf-call-ip6tables",
-+		.data		= &brnf_call_ip6tables,
-+		.maxlen		= sizeof(int),
-+		.mode		= 0644,
-+		.proc_handler	= &brnf_sysctl_call_tables,
-+	},
-+	{
-+		.ctl_name	= NET_BRIDGE_NF_FILTER_VLAN_TAGGED,
-+		.procname	= "bridge-nf-filter-vlan-tagged",
-+		.data		= &brnf_filter_vlan_tagged,
-+		.maxlen		= sizeof(int),
-+		.mode		= 0644,
-+		.proc_handler	= &brnf_sysctl_call_tables,
-+	},
-+	{ .ctl_name = 0 }
-+};
-+
-+static ctl_table brnf_bridge_table[] = {
-+	{
-+		.ctl_name	= NET_BRIDGE,
-+		.procname	= "bridge",
-+		.mode		= 0555,
-+		.child		= brnf_table,
-+	},
-+	{ .ctl_name = 0 }
-+};
-+
-+static ctl_table brnf_net_table[] = {
-+	{
-+		.ctl_name	= CTL_NET,
-+		.procname	= "net",
-+		.mode		= 0555,
-+		.child		= brnf_bridge_table,
-+	},
-+	{ .ctl_name = 0 }
-+};
-+#endif
-+
-+int br_netfilter_init(void)
-+{
-+	int i;
-+
-+	for (i = 0; i < ARRAY_SIZE(br_nf_ops); i++) {
-+		int ret;
-+
-+		if ((ret = nf_register_hook(&br_nf_ops[i])) >= 0)
-+			continue;
-+
-+		while (i--)
-+			nf_unregister_hook(&br_nf_ops[i]);
-+
-+		return ret;
-+	}
-+
-+#ifdef CONFIG_SYSCTL
-+	brnf_sysctl_header = register_sysctl_table(brnf_net_table, 0);
-+	if (brnf_sysctl_header == NULL) {
-+		printk(KERN_WARNING "br_netfilter: can't register to sysctl.\n");
-+		for (i = 0; i < ARRAY_SIZE(br_nf_ops); i++)
-+			nf_unregister_hook(&br_nf_ops[i]);
-+		return -EFAULT;
-+	}
-+#endif
-+
-+	printk(KERN_NOTICE "Bridge firewalling registered\n");
-+
-+	return 0;
-+}
-+
-+void br_netfilter_fini(void)
-+{
-+	int i;
-+
-+	for (i = ARRAY_SIZE(br_nf_ops) - 1; i >= 0; i--)
-+		nf_unregister_hook(&br_nf_ops[i]);
-+#ifdef CONFIG_SYSCTL
-+	unregister_sysctl_table(brnf_sysctl_header);
-+#endif
-+
-+}
---- /dev/null	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/net/ipv4/netfilter/ipt_physdev.c	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,127 @@
-+/* Kernel module to match the bridge port in and
-+ * out device for IP packets coming into contact with a bridge. */
-+#include <linux/module.h>
-+#include <linux/skbuff.h>
-+#include <linux/netfilter_ipv4/ipt_physdev.h>
-+#include <linux/netfilter_ipv4/ip_tables.h>
-+#include <linux/netfilter_bridge.h>
-+#include <linux/netdevice.h>
-+#define MATCH   1
-+#define NOMATCH 0
-+
-+static int
-+match(const struct sk_buff *skb,
-+      const struct net_device *in,
-+      const struct net_device *out,
-+      const void *matchinfo,
-+      int offset,
-+      const void *hdr,
-+      u_int16_t datalen,
-+      int *hotdrop)
-+{
-+	int i;
-+	static const char nulldevname[IFNAMSIZ] = { 0 };
-+	const struct ipt_physdev_info *info = matchinfo;
-+	unsigned long ret;
-+	const char *indev, *outdev;
-+	struct nf_bridge_info *nf_bridge;
-+
-+	/* Not a bridged IP packet or no info available yet:
-+	 * LOCAL_OUT/mangle and LOCAL_OUT/nat don't know if
-+	 * the destination device will be a bridge. */
-+	if (!(nf_bridge = skb->nf_bridge)) {
-+		/* Return MATCH if the invert flags of the used options are on */
-+		if ((info->bitmask & IPT_PHYSDEV_OP_BRIDGED) &&
-+		    !(info->invert & IPT_PHYSDEV_OP_BRIDGED))
-+			return NOMATCH;
-+		if ((info->bitmask & IPT_PHYSDEV_OP_ISIN) &&
-+		    !(info->invert & IPT_PHYSDEV_OP_ISIN))
-+			return NOMATCH;
-+		if ((info->bitmask & IPT_PHYSDEV_OP_ISOUT) &&
-+		    !(info->invert & IPT_PHYSDEV_OP_ISOUT))
-+			return NOMATCH;
-+		if ((info->bitmask & IPT_PHYSDEV_OP_IN) &&
-+		    !(info->invert & IPT_PHYSDEV_OP_IN))
-+			return NOMATCH;
-+		if ((info->bitmask & IPT_PHYSDEV_OP_OUT) &&
-+		    !(info->invert & IPT_PHYSDEV_OP_OUT))
-+			return NOMATCH;
-+		return MATCH;
-+	}
-+
-+	/* This only makes sense in the FORWARD and POSTROUTING chains */
-+	if ((info->bitmask & IPT_PHYSDEV_OP_BRIDGED) &&
-+	    (!!(nf_bridge->mask & BRNF_BRIDGED) ^
-+	    !(info->invert & IPT_PHYSDEV_OP_BRIDGED)))
-+		return NOMATCH;
-+
-+	if ((info->bitmask & IPT_PHYSDEV_OP_ISIN &&
-+	    (!nf_bridge->physindev ^ !!(info->invert & IPT_PHYSDEV_OP_ISIN))) ||
-+	    (info->bitmask & IPT_PHYSDEV_OP_ISOUT &&
-+	    (!nf_bridge->physoutdev ^ !!(info->invert & IPT_PHYSDEV_OP_ISOUT))))
-+		return NOMATCH;
-+
-+	if (!(info->bitmask & IPT_PHYSDEV_OP_IN))
-+		goto match_outdev;
-+	indev = nf_bridge->physindev ? nf_bridge->physindev->name : nulldevname;
-+	for (i = 0, ret = 0; i < IFNAMSIZ/sizeof(unsigned long); i++) {
-+		ret |= (((const unsigned long *)indev)[i]
-+			^ ((const unsigned long *)info->physindev)[i])
-+			& ((const unsigned long *)info->in_mask)[i];
-+	}
-+
-+	if ((ret == 0) ^ !(info->invert & IPT_PHYSDEV_OP_IN))
-+		return NOMATCH;
-+
-+match_outdev:
-+	if (!(info->bitmask & IPT_PHYSDEV_OP_OUT))
-+		return MATCH;
-+	outdev = nf_bridge->physoutdev ?
-+		 nf_bridge->physoutdev->name : nulldevname;
-+	for (i = 0, ret = 0; i < IFNAMSIZ/sizeof(unsigned long); i++) {
-+		ret |= (((const unsigned long *)outdev)[i]
-+			^ ((const unsigned long *)info->physoutdev)[i])
-+			& ((const unsigned long *)info->out_mask)[i];
-+	}
-+
-+	return (ret != 0) ^ !(info->invert & IPT_PHYSDEV_OP_OUT);
-+}
-+
-+static int
-+checkentry(const char *tablename,
-+		       const struct ipt_ip *ip,
-+		       void *matchinfo,
-+		       unsigned int matchsize,
-+		       unsigned int hook_mask)
-+{
-+	const struct ipt_physdev_info *info = matchinfo;
-+
-+	if (matchsize != IPT_ALIGN(sizeof(struct ipt_physdev_info)))
-+		return 0;
-+	if (!(info->bitmask & IPT_PHYSDEV_OP_MASK) ||
-+	    info->bitmask & ~IPT_PHYSDEV_OP_MASK)
-+		return 0;
-+	return 1;
-+}
-+
-+static struct ipt_match physdev_match = {
-+	.name		= "physdev",
-+	.match		= &match,
-+	.checkentry	= &checkentry,
-+	.me		= THIS_MODULE,
-+};
-+
-+static int __init init(void)
-+{
-+	return ipt_register_match(&physdev_match);
-+}
-+
-+static void __exit fini(void)
-+{
-+	ipt_unregister_match(&physdev_match);
-+}
-+
-+module_init(init);
-+module_exit(fini);
-+MODULE_LICENSE("GPL");
-+EXPORT_NO_SYMBOLS;
---- /dev/null	2005-09-22 15:53:13.374707688 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/netfilter_ipv4/ipt_physdev.h	2005-09-15 16:57:23.000000000 +0000
-@@ -0,0 +1,24 @@
-+#ifndef _IPT_PHYSDEV_H
-+#define _IPT_PHYSDEV_H
-+
-+#ifdef __KERNEL__
-+#include <linux/if.h>
-+#endif
-+
-+#define IPT_PHYSDEV_OP_IN		0x01
-+#define IPT_PHYSDEV_OP_OUT		0x02
-+#define IPT_PHYSDEV_OP_BRIDGED		0x04
-+#define IPT_PHYSDEV_OP_ISIN		0x08
-+#define IPT_PHYSDEV_OP_ISOUT		0x10
-+#define IPT_PHYSDEV_OP_MASK		(0x20 - 1)
-+
-+struct ipt_physdev_info {
-+	char physindev[IFNAMSIZ];
-+	char in_mask[IFNAMSIZ];
-+	char physoutdev[IFNAMSIZ];
-+	char out_mask[IFNAMSIZ];
-+	u_int8_t invert;
-+	u_int8_t bitmask;
-+};
-+
-+#endif /*_IPT_PHYSDEV_H*/
---- linux-2.4.31/net/8021q/vlan_dev.c	2005-01-19 14:10:13.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/net/8021q/vlan_dev.c	2005-09-15 16:57:23.000000000 +0000
-@@ -488,6 +488,10 @@ int vlan_dev_hard_start_xmit(struct sk_b
- 	stats->tx_packets++; /* for statics only */
- 	stats->tx_bytes += skb->len;
- 
-+	skb->protocol = __constant_htons(ETH_P_8021Q);
-+	skb->mac.raw -= VLAN_HLEN;
-+	skb->nh.raw -= VLAN_HLEN;
-+
- 	skb->dev = VLAN_DEV_INFO(dev)->real_dev;
- 	dev_queue_xmit(skb);
- 
---- linux-2.4.31/include/linux/sysctl.h	2005-04-04 01:42:20.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/include/linux/sysctl.h	2005-09-15 16:57:23.000000000 +0000
-@@ -609,6 +609,15 @@ enum {
- 	NET_DECNET_CONF_DEV_STATE = 7
- };
- 
-+/* /proc/sys/net/bridge */
-+enum {
-+	NET_BRIDGE_NF_CALL_ARPTABLES = 1,
-+	NET_BRIDGE_NF_CALL_IPTABLES = 2,
-+	NET_BRIDGE_NF_CALL_IP6TABLES = 3,
-+	NET_BRIDGE_NF_FILTER_VLAN_TAGGED = 4,
-+};
-+
-+
- /* CTL_PROC names: */
- 
- /* CTL_FS names: */
---- linux-2.4.31/net/ipv4/netfilter/ipt_REJECT.c	2005-01-19 14:10:13.000000000 +0000
-+++ linux-2.4.31-ebt-brnf/net/ipv4/netfilter/ipt_REJECT.c	2005-09-15 16:57:23.000000000 +0000
-@@ -15,6 +15,9 @@
- #include <net/route.h>
- #include <linux/netfilter_ipv4/ip_tables.h>
- #include <linux/netfilter_ipv4/ipt_REJECT.h>
-+#ifdef CONFIG_BRIDGE_NETFILTER
-+#include <linux/netfilter_bridge.h>
-+#endif
- 
- #if 0
- #define DEBUGP printk
-@@ -29,7 +32,13 @@ static inline struct rtable *route_rever
- 	struct rt_key key = {};
- 	struct rtable *rt;
- 
--	if (hook != NF_IP_FORWARD) {
-+	/* We don't require ip forwarding to be enabled to be able to
-+	 * send a RST reply for bridged traffic. */
-+	if (hook != NF_IP_FORWARD
-+#ifdef CONFIG_BRIDGE_NETFILTER
-+	    || (skb->nf_bridge && skb->nf_bridge->mask & BRNF_BRIDGED)
-+#endif
-+	   ) {
- 		key.dst = iph->saddr;
- 		if (hook == NF_IP_LOCAL_IN)
- 			key.src = iph->daddr;