From eb79711e0a1db390a66afe99b9226c1addf6be46 Mon Sep 17 00:00:00 2001
From: Alvaro Saurin <alvaro.saurin@gmail.com>
Date: Thu, 19 Nov 2015 15:05:16 +0100
Subject: [PATCH 1/2] Added flow misses count

---
 router/fastdp.go | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/router/fastdp.go b/router/fastdp.go
index b4e7eeff..c1d30fa2 100644
--- a/router/fastdp.go
+++ b/router/fastdp.go
@@ -40,6 +40,7 @@ type FastDatapath struct {
 	dpif             *odp.Dpif
 	dp               odp.DatapathHandle
 	deleteFlowsCount uint64
+	missCount        uint64
 	missHandlers     map[odp.VportID]missHandler
 	localPeer        *mesh.Peer
 	peers            *mesh.Peers
@@ -216,8 +217,10 @@ func (fastdp fastDatapathBridge) String() string {
 	return fmt.Sprint(fastdp.dpname, " (via ODP)")
 }
 
-func (fastDatapathBridge) Stats() map[string]int {
-	return nil
+func (fastdp fastDatapathBridge) Stats() map[string]int {
+	return map[string]int{
+		"FlowMisses": int(fastdp.missCount),
+	}
 }
 
 var routerBridgePortID = bridgePortID{router: true}
@@ -937,6 +940,8 @@ func (fastdp *FastDatapath) Miss(packet []byte, fks odp.FlowKeys) error {
 	lock := fastdp.startLock()
 	defer lock.unlock()
 
+	fastdp.missCount++
+
 	handler := fastdp.getMissHandler(ingress)
 	if handler == nil {
 		return nil

From 8ac745b4e5d3d45bd024a0522cd5aea4682168fa Mon Sep 17 00:00:00 2001
From: Adam Harrison <harrisonadamw@gmail.com>
Date: Wed, 25 Nov 2015 17:05:19 +0000
Subject: [PATCH 2/2] Lock read of miss counter

---
 router/fastdp.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/router/fastdp.go b/router/fastdp.go
index c1d30fa2..571fb10c 100644
--- a/router/fastdp.go
+++ b/router/fastdp.go
@@ -218,6 +218,9 @@ func (fastdp fastDatapathBridge) String() string {
 }
 
 func (fastdp fastDatapathBridge) Stats() map[string]int {
+	lock := fastdp.startLock()
+	defer lock.unlock()
+
 	return map[string]int{
 		"FlowMisses": int(fastdp.missCount),
 	}