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path: root/target/linux/generic/patches-3.2/644-bridge_optimize_netfilter_hooks.patch
blob: 06b05f8af96555f9cd4220165c685f6a2b97319a (plain)
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--- a/net/bridge/br_netfilter.c
+++ b/net/bridge/br_netfilter.c
@@ -62,6 +62,11 @@ static int brnf_filter_pppoe_tagged __re
 #define brnf_filter_pppoe_tagged 0
 #endif
 
+bool br_netfilter_run_hooks(void)
+{
+	return brnf_call_iptables | brnf_call_ip6tables | brnf_call_arptables;
+}
+
 static inline __be16 vlan_proto(const struct sk_buff *skb)
 {
 	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
 extern int br_netfilter_init(void);
 extern void br_netfilter_fini(void);
 extern void br_netfilter_rtable_init(struct net_bridge *);
+extern bool br_netfilter_run_hooks(void);
 #else
 #define br_netfilter_init()	(0)
 #define br_netfilter_fini()	do { } while(0)
 #define br_netfilter_rtable_init(x)
+#define br_netfilter_run_hooks()	false
 #endif
 
+static inline int
+BR_HOOK(uint8_t pf, unsigned int hook, struct sk_buff *skb,
+	struct net_device *in, struct net_device *out,
+	int (*okfn)(struct sk_buff *))
+{
+	if (!br_netfilter_run_hooks())
+		return okfn(skb);
+
+	return NF_HOOK(pf, hook, skb, in, out, okfn);
+}
+
 /* 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_input.c
+++ b/net/bridge/br_input.c
@@ -40,7 +40,7 @@ static int br_pass_frame_up(struct sk_bu
 	indev = skb->dev;
 	skb->dev = brdev;
 
-	return NF_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_IN, skb, indev, NULL,
+	return BR_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_IN, skb, indev, NULL,
 		       netif_receive_skb);
 }
 
@@ -199,7 +199,7 @@ rx_handler_result_t br_handle_frame(stru
 		}
 
 		/* Deliver packet to local host only */
-		if (NF_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_IN, skb, skb->dev,
+		if (BR_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_IN, skb, skb->dev,
 			    NULL, br_handle_local_finish)) {
 			return RX_HANDLER_CONSUMED; /* consumed by filter */
 		} else {
@@ -224,7 +224,7 @@ forward:
 		if (!compare_ether_addr(p->br->dev->dev_addr, dest))
 			skb->pkt_type = PACKET_HOST;
 
-		NF_HOOK(NFPROTO_BRIDGE, NF_BR_PRE_ROUTING, skb, skb->dev, NULL,
+		BR_HOOK(NFPROTO_BRIDGE, NF_BR_PRE_ROUTING, skb, skb->dev, NULL,
 			br_handle_frame_finish);
 		break;
 	default:
--- 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
@@ -824,7 +824,7 @@ 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
 
 	skb_reset_mac_header(skb);
 
-	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);
 }