Adding ifwd app
diff --git a/ifwd/app.xml b/ifwd/app.xml
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+++ b/ifwd/app.xml
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+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ ~ Copyright 2015 Open Networking Laboratory
+ ~
+ ~ Licensed under the Apache License, Version 2.0 (the "License");
+ ~ you may not use this file except in compliance with the License.
+ ~ You may obtain a copy of the License at
+ ~
+ ~ http://www.apache.org/licenses/LICENSE-2.0
+ ~
+ ~ Unless required by applicable law or agreed to in writing, software
+ ~ distributed under the License is distributed on an "AS IS" BASIS,
+ ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ ~ See the License for the specific language governing permissions and
+ ~ limitations under the License.
+ -->
+<app name="org.onosproject.app.ifwd" origin="ON.Lab" version="1.1.0"
+ features="onos-app-ifwd">
+ <description>ONOS Reactive forwarding application using intent subsystem (experimental)</description>
+</app>
diff --git a/ifwd/pom.xml b/ifwd/pom.xml
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+++ b/ifwd/pom.xml
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+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ ~ Copyright 2014 Open Networking Laboratory
+ ~
+ ~ Licensed under the Apache License, Version 2.0 (the "License");
+ ~ you may not use this file except in compliance with the License.
+ ~ You may obtain a copy of the License at
+ ~
+ ~ http://www.apache.org/licenses/LICENSE-2.0
+ ~
+ ~ Unless required by applicable law or agreed to in writing, software
+ ~ distributed under the License is distributed on an "AS IS" BASIS,
+ ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ ~ See the License for the specific language governing permissions and
+ ~ limitations under the License.
+ -->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+ xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+ <modelVersion>4.0.0</modelVersion>
+
+ <parent>
+ <groupId>org.onosproject</groupId>
+ <artifactId>onos-apps</artifactId>
+ <version>1.2.0-SNAPSHOT</version>
+ <relativePath>../pom.xml</relativePath>
+ </parent>
+
+ <artifactId>onos-app-ifwd</artifactId>
+ <packaging>bundle</packaging>
+
+ <description>ONOS simple reactive forwarding app that uses intent service</description>
+
+</project>
diff --git a/ifwd/src/main/java/org/onosproject/ifwd/IntentReactiveForwarding.java b/ifwd/src/main/java/org/onosproject/ifwd/IntentReactiveForwarding.java
new file mode 100644
index 0000000..4b1d85a
--- /dev/null
+++ b/ifwd/src/main/java/org/onosproject/ifwd/IntentReactiveForwarding.java
@@ -0,0 +1,169 @@
+/*
+ * Copyright 2014 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.ifwd;
+
+import static org.slf4j.LoggerFactory.getLogger;
+
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Reference;
+import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.onlab.packet.Ethernet;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.CoreService;
+import org.onosproject.net.Host;
+import org.onosproject.net.HostId;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.flow.DefaultTrafficSelector;
+import org.onosproject.net.flow.DefaultTrafficTreatment;
+import org.onosproject.net.flow.FlowRuleService;
+import org.onosproject.net.flow.TrafficSelector;
+import org.onosproject.net.flow.TrafficTreatment;
+import org.onosproject.net.host.HostService;
+import org.onosproject.net.intent.HostToHostIntent;
+import org.onosproject.net.intent.IntentService;
+import org.onosproject.net.packet.DefaultOutboundPacket;
+import org.onosproject.net.packet.InboundPacket;
+import org.onosproject.net.packet.OutboundPacket;
+import org.onosproject.net.packet.PacketContext;
+import org.onosproject.net.packet.PacketPriority;
+import org.onosproject.net.packet.PacketProcessor;
+import org.onosproject.net.packet.PacketService;
+import org.onosproject.net.topology.TopologyService;
+import org.slf4j.Logger;
+
+/**
+ * WORK-IN-PROGRESS: Sample reactive forwarding application using intent framework.
+ */
+@Component(immediate = true)
+public class IntentReactiveForwarding {
+
+ private final Logger log = getLogger(getClass());
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected CoreService coreService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected TopologyService topologyService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected PacketService packetService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected IntentService intentService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected HostService hostService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected FlowRuleService flowRuleService;
+
+ private ReactivePacketProcessor processor = new ReactivePacketProcessor();
+ private ApplicationId appId;
+
+ @Activate
+ public void activate() {
+ appId = coreService.registerApplication("org.onosproject.ifwd");
+
+ packetService.addProcessor(processor, PacketProcessor.ADVISOR_MAX + 2);
+
+ TrafficSelector.Builder selector = DefaultTrafficSelector.builder();
+ selector.matchEthType(Ethernet.TYPE_IPV4);
+ packetService.requestPackets(selector.build(), PacketPriority.REACTIVE, appId);
+
+ log.info("Started");
+ }
+
+ @Deactivate
+ public void deactivate() {
+ packetService.removeProcessor(processor);
+ processor = null;
+ log.info("Stopped");
+ }
+
+ /**
+ * Packet processor responsible for forwarding packets along their paths.
+ */
+ private class ReactivePacketProcessor implements PacketProcessor {
+
+ @Override
+ public void process(PacketContext context) {
+ // Stop processing if the packet has been handled, since we
+ // can't do any more to it.
+ if (context.isHandled()) {
+ return;
+ }
+
+ InboundPacket pkt = context.inPacket();
+ Ethernet ethPkt = pkt.parsed();
+
+ if (ethPkt == null) {
+ return;
+ }
+
+ HostId srcId = HostId.hostId(ethPkt.getSourceMAC());
+ HostId dstId = HostId.hostId(ethPkt.getDestinationMAC());
+
+ // Do we know who this is for? If not, flood and bail.
+ Host dst = hostService.getHost(dstId);
+ if (dst == null) {
+ flood(context);
+ return;
+ }
+
+ // Otherwise forward and be done with it.
+ setUpConnectivity(context, srcId, dstId);
+ forwardPacketToDst(context, dst);
+ }
+ }
+
+ // Floods the specified packet if permissible.
+ private void flood(PacketContext context) {
+ if (topologyService.isBroadcastPoint(topologyService.currentTopology(),
+ context.inPacket().receivedFrom())) {
+ packetOut(context, PortNumber.FLOOD);
+ } else {
+ context.block();
+ }
+ }
+
+ // Sends a packet out the specified port.
+ private void packetOut(PacketContext context, PortNumber portNumber) {
+ context.treatmentBuilder().setOutput(portNumber);
+ context.send();
+ }
+
+ private void forwardPacketToDst(PacketContext context, Host dst) {
+ TrafficTreatment treatment = DefaultTrafficTreatment.builder().setOutput(dst.location().port()).build();
+ OutboundPacket packet = new DefaultOutboundPacket(dst.location().deviceId(),
+ treatment, context.inPacket().unparsed());
+ packetService.emit(packet);
+ log.info("sending packet: {}", packet);
+ }
+
+ // Install a rule forwarding the packet to the specified port.
+ private void setUpConnectivity(PacketContext context, HostId srcId, HostId dstId) {
+ TrafficSelector selector = DefaultTrafficSelector.emptySelector();
+ TrafficTreatment treatment = DefaultTrafficTreatment.emptyTreatment();
+
+ HostToHostIntent intent = new HostToHostIntent(appId, srcId, dstId,
+ selector, treatment);
+
+ intentService.submit(intent);
+ }
+
+}
diff --git a/ifwd/src/main/java/org/onosproject/ifwd/package-info.java b/ifwd/src/main/java/org/onosproject/ifwd/package-info.java
new file mode 100644
index 0000000..f074606
--- /dev/null
+++ b/ifwd/src/main/java/org/onosproject/ifwd/package-info.java
@@ -0,0 +1,21 @@
+/*
+ * Copyright 2014 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Sample application that provides simple form of reactive forwarding
+ * using the intent service.
+ */
+package org.onosproject.ifwd;