Pushes flow rules to the control switch when the switch is connected and available.

Change-Id: I7cc03a44e21b9dd67d40139ceea7a9b44201d7a8

@@ -381,6 +381,7 @@ public class BgpRouter {
                 case DEVICE_AVAILABILITY_CHANGED:
                     if (deviceService.isAvailable(event.subject().id())) {
                         log.info("Device connected {}", event.subject().id());
+                        if (event.subject().id().equals(deviceId)) {
                             processIntfFilters(true, configService.getInterfaces());
 
                             /* For test only - will be removed before Cardinal release */
@@ -391,6 +392,11 @@ public class BgpRouter {
                             FibUpdate fibUpdate = new FibUpdate(FibUpdate.Type.UPDATE, fibEntry);
                             updateFibEntry(Collections.singletonList(fibUpdate));
                         }
+
+                        if (event.subject().id().equals(ctrlDeviceId)) {
+                            connectivityManager.notifySwitchAvailable();
+                        }
+                    }
                     break;
 
                     // TODO other cases

@@ -81,6 +81,23 @@ public class TunnellingConnectivityManager {
 
         this.bgpSpeaker = bgpSpeaker;
 
+    }
+
+    public void start() {
+        packetService.addProcessor(processor, PacketProcessor.ADVISOR_MAX + 3);
+    }
+
+    public void stop() {
+        packetService.removeProcessor(processor);
+        // Should revoke packet requests in the future
+    }
+
+    /**
+     * Pushes the flow rules for forwarding BGP TCP packets to controller.
+     * It is called when switches are connected and available.
+     */
+    public void notifySwitchAvailable() {
+        // control plane OVS is available, push default flows
         TrafficSelector selectorDst = DefaultTrafficSelector.builder()
                 .matchEthType(Ethernet.TYPE_IPV4)
                 .matchIPProtocol(IPv4.PROTOCOL_TCP)
@@ -117,16 +134,6 @@ public class TunnellingConnectivityManager {
         flowObjectiveService.forward(bgpSpeaker.connectPoint().deviceId(),
                 puntDst);
         log.info("Sent punt forwarding objective to {}", bgpSpeaker.connectPoint().deviceId());
-
-    }
-
-    public void start() {
-        packetService.addProcessor(processor, PacketProcessor.ADVISOR_MAX + 3);
-    }
-
-    public void stop() {
-        packetService.removeProcessor(processor);
-        // Should revoke packet requests in the future
     }
 
     /**