BgpRouter: Add default flows for BGP traffic in control plane switch

Change-Id: Ia963b22c5a7460fb7fa2e75ddf66bcbb40004dca

@@ -149,7 +149,8 @@ public class BgpRouter {
 
         connectivityManager = new TunnellingConnectivityManager(appId,
                                                                 configService,
-                                                                packetService);
+                                                                packetService,
+                                                                flowService);
 
         routingService.start(new InternalFibListener());
 

@@ -21,7 +21,12 @@ import org.onlab.packet.IpAddress;
 import org.onlab.packet.TCP;
 import org.onosproject.core.ApplicationId;
 import org.onosproject.net.ConnectPoint;
+import org.onosproject.net.flow.DefaultFlowRule;
+import org.onosproject.net.flow.DefaultTrafficSelector;
 import org.onosproject.net.flow.DefaultTrafficTreatment;
+import org.onosproject.net.flow.FlowRuleOperations;
+import org.onosproject.net.flow.FlowRuleService;
+import org.onosproject.net.flow.TrafficSelector;
 import org.onosproject.net.flow.TrafficTreatment;
 import org.onosproject.net.packet.DefaultOutboundPacket;
 import org.onosproject.net.packet.OutboundPacket;
@@ -32,8 +37,6 @@ import org.onosproject.routing.config.BgpPeer;
 import org.onosproject.routing.config.BgpSpeaker;
 import org.onosproject.routing.config.InterfaceAddress;
 import org.onosproject.routing.config.RoutingConfigurationService;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 
 /**
@@ -46,6 +49,8 @@ public class TunnellingConnectivityManager {
 
     private final ApplicationId appId;
 
+    private final BgpSpeaker bgpSpeaker;
+
     private final PacketService packetService;
     private final RoutingConfigurationService configService;
 
@@ -53,10 +58,46 @@ public class TunnellingConnectivityManager {
 
     public TunnellingConnectivityManager(ApplicationId appId,
                                          RoutingConfigurationService configService,
-                                         PacketService packetService) {
+                                         PacketService packetService,
+                                         FlowRuleService flowService) {
         this.appId = appId;
         this.configService = configService;
         this.packetService = packetService;
+
+        BgpSpeaker bgpSpeaker = null;
+        for (BgpSpeaker speaker : configService.getBgpSpeakers().values()) {
+            bgpSpeaker = speaker;
+            break;
+        }
+
+        if (bgpSpeaker == null) {
+            throw new IllegalArgumentException("Must have at least one BGP speaker configured");
+        }
+
+        this.bgpSpeaker = bgpSpeaker;
+
+        TrafficSelector selectorDst = DefaultTrafficSelector.builder()
+                .matchEthType(Ethernet.TYPE_IPV4)
+                .matchIPProtocol(IPv4.PROTOCOL_TCP)
+                .matchTcpDst(BGP_PORT)
+                .build();
+
+        TrafficSelector selectorSrc = DefaultTrafficSelector.builder()
+                .matchEthType(Ethernet.TYPE_IPV4)
+                .matchIPProtocol(IPv4.PROTOCOL_TCP)
+                .matchTcpSrc(BGP_PORT)
+                .build();
+
+        TrafficTreatment treatment = DefaultTrafficTreatment.builder()
+                .punt()
+                .build();
+
+        FlowRuleOperations.Builder builder = FlowRuleOperations.builder();
+        builder.add(new DefaultFlowRule(bgpSpeaker.connectPoint().deviceId(),
+                                        selectorSrc, treatment, 0, appId, 0, true));
+        builder.add(new DefaultFlowRule(bgpSpeaker.connectPoint().deviceId(),
+                                        selectorDst, treatment, 0, appId, 0, true));
+        flowService.apply(builder.build());
     }
 
     public void start() {
@@ -74,27 +115,21 @@ public class TunnellingConnectivityManager {
      * @param context the packet context of the incoming packet
      */
     private void forward(PacketContext context) {
-
         ConnectPoint outputPort = null;
-        Logger log = LoggerFactory.getLogger(getClass());
-
 
         IPv4 ipv4 = (IPv4) context.inPacket().parsed().getPayload();
         IpAddress dstAddress = IpAddress.valueOf(ipv4.getDestinationAddress());
 
-        for (BgpSpeaker speaker : configService.getBgpSpeakers().values()) {
-            if (context.inPacket().receivedFrom().equals(speaker.connectPoint())) {
+        if (context.inPacket().receivedFrom().equals(bgpSpeaker.connectPoint())) {
             BgpPeer peer = configService.getBgpPeers().get(dstAddress);
             if (peer != null) {
                 outputPort = peer.connectPoint();
             }
-                break;
         }
-            for (InterfaceAddress addr : speaker.interfaceAddresses()) {
+        for (InterfaceAddress addr : bgpSpeaker.interfaceAddresses()) {
             if (addr.ipAddress().equals(dstAddress) && !context.inPacket()
-                        .receivedFrom().equals(speaker.connectPoint())) {
-                    outputPort = speaker.connectPoint();
-                }
+                    .receivedFrom().equals(bgpSpeaker.connectPoint())) {
+                outputPort = bgpSpeaker.connectPoint();
             }
         }