kernel: restore ebtables functionality by running netfilter hooks when the ebtables module is loaded

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31141 3c298f89-4303-0410-b956-a3cf2f4a3e73

2 files changed, 94 insertions, 46 deletions

diff --git a/target/linux/generic/patches-3.2/644-bridge_optimize_netfilter_hooks.patch b/target/linux/generic/patches-3.2/644-bridge_optimize_netfilter_hooks.patch
index 91139854bb..6c3c3e5c60 100644
--- a/target/linux/generic/patches-3.2/644-bridge_optimize_netfilter_hooks.patch
+++ b/target/linux/generic/patches-3.2/644-bridge_optimize_netfilter_hooks.patch
@@ -1,12 +1,16 @@
 --- a/net/bridge/br_netfilter.c
 +++ b/net/bridge/br_netfilter.c
-@@ -62,6 +62,11 @@ static int brnf_filter_pppoe_tagged __re
+@@ -62,6 +62,15 @@ static int brnf_filter_pppoe_tagged __re
  #define brnf_filter_pppoe_tagged 0
  #endif
  
++int brnf_call_ebtables __read_mostly = 0;
++EXPORT_SYMBOL_GPL(brnf_call_ebtables);
++
 +bool br_netfilter_run_hooks(void)
 +{
-+	return brnf_call_iptables | brnf_call_ip6tables | brnf_call_arptables;
++	return brnf_call_iptables | brnf_call_ip6tables | brnf_call_arptables |
++	       brnf_call_ebtables;
 +}
 +
  static inline __be16 vlan_proto(const struct sk_buff *skb)
@@ -14,7 +18,11 @@
  	if (vlan_tx_tag_present(skb))
 --- a/net/bridge/br_private.h
 +++ b/net/bridge/br_private.h
-@@ -491,12 +491,25 @@ static inline bool br_multicast_is_route
+@@ -488,15 +488,29 @@ static inline bool br_multicast_is_route
+ 
+ /* br_netfilter.c */
+ #ifdef CONFIG_BRIDGE_NETFILTER
++extern int brnf_call_ebtables;
  extern int br_netfilter_init(void);
  extern void br_netfilter_fini(void);
  extern void br_netfilter_rtable_init(struct net_bridge *);
@@ -120,3 +128,19 @@
  		dev_queue_xmit);
  }
  
+--- a/net/bridge/netfilter/ebtables.c
++++ b/net/bridge/netfilter/ebtables.c
+@@ -2399,11 +2399,13 @@ static int __init ebtables_init(void)
+ 	}
+ 
+ 	printk(KERN_INFO "Ebtables v2.0 registered\n");
++	brnf_call_ebtables = 1;
+ 	return 0;
+ }
+ 
+ static void __exit ebtables_fini(void)
+ {
++	brnf_call_ebtables = 0;
+ 	nf_unregister_sockopt(&ebt_sockopts);
+ 	xt_unregister_target(&ebt_standard_target);
+ 	printk(KERN_INFO "Ebtables v2.0 unregistered\n");
diff --git a/target/linux/generic/patches-3.3/644-bridge_optimize_netfilter_hooks.patch b/target/linux/generic/patches-3.3/644-bridge_optimize_netfilter_hooks.patch
index d2fdd614c3..3b02c5cf94 100644
--- a/target/linux/generic/patches-3.3/644-bridge_optimize_netfilter_hooks.patch
+++ b/target/linux/generic/patches-3.3/644-bridge_optimize_netfilter_hooks.patch
@@ -1,3 +1,32 @@
+--- a/net/bridge/br_forward.c
++++ b/net/bridge/br_forward.c
+@@ -55,7 +55,7 @@ int br_dev_queue_push_xmit(struct sk_buf
+ 
+ int br_forward_finish(struct sk_buff *skb)
+ {
+-	return NF_HOOK(NFPROTO_BRIDGE, NF_BR_POST_ROUTING, skb, NULL, skb->dev,
++	return BR_HOOK(NFPROTO_BRIDGE, NF_BR_POST_ROUTING, skb, NULL, skb->dev,
+ 		       br_dev_queue_push_xmit);
+ 
+ }
+@@ -74,7 +74,7 @@ static void __br_deliver(const struct ne
+ 		return;
+ 	}
+ 
+-	NF_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_OUT, skb, NULL, skb->dev,
++	BR_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_OUT, skb, NULL, skb->dev,
+ 		br_forward_finish);
+ }
+ 
+@@ -91,7 +91,7 @@ static void __br_forward(const struct ne
+ 	skb->dev = to->dev;
+ 	skb_forward_csum(skb);
+ 
+-	NF_HOOK(NFPROTO_BRIDGE, NF_BR_FORWARD, skb, indev, skb->dev,
++	BR_HOOK(NFPROTO_BRIDGE, NF_BR_FORWARD, skb, indev, skb->dev,
+ 		br_forward_finish);
+ }
+ 
 --- a/net/bridge/br_input.c
 +++ b/net/bridge/br_input.c
 @@ -40,7 +40,7 @@ static int br_pass_frame_up(struct sk_bu
@@ -27,15 +56,30 @@
  			br_handle_frame_finish);
  		break;
  	default:
+--- a/net/bridge/br_multicast.c
++++ b/net/bridge/br_multicast.c
+@@ -827,7 +827,7 @@ static void __br_multicast_send_query(st
+ 	if (port) {
+ 		__skb_push(skb, sizeof(struct ethhdr));
+ 		skb->dev = port->dev;
+-		NF_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_OUT, skb, NULL, skb->dev,
++		BR_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_OUT, skb, NULL, skb->dev,
+ 			dev_queue_xmit);
+ 	} else
+ 		netif_rx(skb);
 --- a/net/bridge/br_netfilter.c
 +++ b/net/bridge/br_netfilter.c
-@@ -71,6 +71,11 @@ static int brnf_filter_pppoe_tagged __re
+@@ -71,6 +71,15 @@ static int brnf_filter_pppoe_tagged __re
  #define IS_ARP(skb) \
  	(!vlan_tx_tag_present(skb) && skb->protocol == htons(ETH_P_ARP))
  
++int brnf_call_ebtables __read_mostly = 0;
++EXPORT_SYMBOL_GPL(brnf_call_ebtables);
++
 +bool br_netfilter_run_hooks(void)
 +{
-+	return brnf_call_iptables | brnf_call_ip6tables | brnf_call_arptables;
++	return brnf_call_iptables | brnf_call_ip6tables | brnf_call_arptables |
++	       brnf_call_ebtables;
 +}
 +
  static inline __be16 vlan_proto(const struct sk_buff *skb)
@@ -43,7 +87,11 @@
  	if (vlan_tx_tag_present(skb))
 --- a/net/bridge/br_private.h
 +++ b/net/bridge/br_private.h
-@@ -493,12 +493,25 @@ static inline bool br_multicast_is_route
+@@ -490,15 +490,29 @@ static inline bool br_multicast_is_route
+ 
+ /* br_netfilter.c */
+ #ifdef CONFIG_BRIDGE_NETFILTER
++extern int brnf_call_ebtables;
  extern int br_netfilter_init(void);
  extern void br_netfilter_fini(void);
  extern void br_netfilter_rtable_init(struct net_bridge *);
@@ -69,46 +117,6 @@
  /* br_stp.c */
  extern void br_log_state(const struct net_bridge_port *p);
  extern struct net_bridge_port *br_get_port(struct net_bridge *br,
---- a/net/bridge/br_forward.c
-+++ b/net/bridge/br_forward.c
-@@ -55,7 +55,7 @@ int br_dev_queue_push_xmit(struct sk_buf
- 
- int br_forward_finish(struct sk_buff *skb)
- {
--	return NF_HOOK(NFPROTO_BRIDGE, NF_BR_POST_ROUTING, skb, NULL, skb->dev,
-+	return BR_HOOK(NFPROTO_BRIDGE, NF_BR_POST_ROUTING, skb, NULL, skb->dev,
- 		       br_dev_queue_push_xmit);
- 
- }
-@@ -74,7 +74,7 @@ static void __br_deliver(const struct ne
- 		return;
- 	}
- 
--	NF_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_OUT, skb, NULL, skb->dev,
-+	BR_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_OUT, skb, NULL, skb->dev,
- 		br_forward_finish);
- }
- 
-@@ -91,7 +91,7 @@ static void __br_forward(const struct ne
- 	skb->dev = to->dev;
- 	skb_forward_csum(skb);
- 
--	NF_HOOK(NFPROTO_BRIDGE, NF_BR_FORWARD, skb, indev, skb->dev,
-+	BR_HOOK(NFPROTO_BRIDGE, NF_BR_FORWARD, skb, indev, skb->dev,
- 		br_forward_finish);
- }
- 
---- a/net/bridge/br_multicast.c
-+++ b/net/bridge/br_multicast.c
-@@ -827,7 +827,7 @@ static void __br_multicast_send_query(st
- 	if (port) {
- 		__skb_push(skb, sizeof(struct ethhdr));
- 		skb->dev = port->dev;
--		NF_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_OUT, skb, NULL, skb->dev,
-+		BR_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_OUT, skb, NULL, skb->dev,
- 			dev_queue_xmit);
- 	} else
- 		netif_rx(skb);
 --- a/net/bridge/br_stp_bpdu.c
 +++ b/net/bridge/br_stp_bpdu.c
 @@ -52,7 +52,7 @@ static void br_send_bpdu(struct net_brid
@@ -120,3 +128,19 @@
  		dev_queue_xmit);
  }
  
+--- a/net/bridge/netfilter/ebtables.c
++++ b/net/bridge/netfilter/ebtables.c
+@@ -2403,11 +2403,13 @@ static int __init ebtables_init(void)
+ 	}
+ 
+ 	printk(KERN_INFO "Ebtables v2.0 registered\n");
++	brnf_call_ebtables = 1;
+ 	return 0;
+ }
+ 
+ static void __exit ebtables_fini(void)
+ {
++	brnf_call_ebtables = 0;
+ 	nf_unregister_sockopt(&ebt_sockopts);
+ 	xt_unregister_target(&ebt_standard_target);
+ 	printk(KERN_INFO "Ebtables v2.0 unregistered\n");