WIP: proxy NDP for IPv6.

ONOS-924

Need to implement test cases.

Change-Id: I86b0cb8c3c8d75f7276778e04c1a7166c9bb2f59
diff --git a/apps/pom.xml b/apps/pom.xml
index 851fa8b..ca64e5f 100644
--- a/apps/pom.xml
+++ b/apps/pom.xml
@@ -37,6 +37,7 @@
         <module>ifwd</module>
         <module>mobility</module>
         <module>proxyarp</module>
+        <module>proxyndp</module>
         <module>config</module>
         <module>sdnip</module>
         <module>calendar</module>
diff --git a/apps/proxyarp/src/main/java/org/onosproject/proxyarp/ProxyArp.java b/apps/proxyarp/src/main/java/org/onosproject/proxyarp/ProxyArp.java
index 01018fd..f0dce52 100644
--- a/apps/proxyarp/src/main/java/org/onosproject/proxyarp/ProxyArp.java
+++ b/apps/proxyarp/src/main/java/org/onosproject/proxyarp/ProxyArp.java
@@ -91,7 +91,7 @@
             }
 
             //handle the arp packet.
-            proxyArpService.handleArp(context);
+            proxyArpService.handlePacket(context);
         }
     }
 }
diff --git a/apps/proxyndp/pom.xml b/apps/proxyndp/pom.xml
new file mode 100644
index 0000000..688710e
--- /dev/null
+++ b/apps/proxyndp/pom.xml
@@ -0,0 +1,34 @@
+<?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>1.1.0-SNAPSHOT</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+
+    <artifactId>onos-app-proxyndp</artifactId>
+    <packaging>bundle</packaging>
+
+    <description>ONOS simple proxy neighbor discovery for IPv6 module</description>
+
+</project>
diff --git a/apps/proxyndp/src/main/java/org/onosproject/proxyndp/ProxyNdp.java b/apps/proxyndp/src/main/java/org/onosproject/proxyndp/ProxyNdp.java
new file mode 100644
index 0000000..5a1c240
--- /dev/null
+++ b/apps/proxyndp/src/main/java/org/onosproject/proxyndp/ProxyNdp.java
@@ -0,0 +1,109 @@
+/*
+ * 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.proxyndp;
+
+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.onlab.packet.IPv6;
+import org.onlab.packet.ICMP6;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.CoreService;
+import org.onosproject.net.flow.DefaultTrafficSelector;
+import org.onosproject.net.flow.TrafficSelector;
+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.proxyarp.ProxyArpService;
+import org.slf4j.Logger;
+
+/**
+ * Sample reactive proxy ndp application.
+ */
+@Component(immediate = true)
+public class ProxyNdp {
+
+    private final Logger log = getLogger(getClass());
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected PacketService packetService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected ProxyArpService proxyArpService;
+
+    private ProxyNdpProcessor processor = new ProxyNdpProcessor();
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected CoreService coreService;
+
+    private ApplicationId appId;
+
+    @Activate
+    public void activate() {
+        appId = coreService.registerApplication("org.onosproject.proxyndp");
+        packetService.addProcessor(processor, PacketProcessor.ADVISOR_MAX + 1);
+
+        TrafficSelector.Builder selectorBuilder = DefaultTrafficSelector.builder();
+        selectorBuilder.matchEthType(Ethernet.TYPE_IPV6);
+        selectorBuilder.matchIPProtocol(IPv6.PROTOCOL_ICMP6);
+        selectorBuilder.matchIcmpv6Type(ICMP6.NEIGHBOR_SOLICITATION);
+        packetService.requestPackets(selectorBuilder.build(),
+                                     PacketPriority.CONTROL, appId);
+
+        selectorBuilder = DefaultTrafficSelector.builder();
+        selectorBuilder.matchEthType(Ethernet.TYPE_IPV6);
+        selectorBuilder.matchIPProtocol(IPv6.PROTOCOL_ICMP6);
+        selectorBuilder.matchIcmpv6Type(ICMP6.NEIGHBOR_ADVERTISEMENT);
+        packetService.requestPackets(selectorBuilder.build(),
+                                     PacketPriority.CONTROL, appId);
+
+        log.info("Started with Application ID {}", appId.id());
+    }
+
+    @Deactivate
+    public void deactivate() {
+        packetService.removeProcessor(processor);
+        processor = null;
+        log.info("Stopped");
+    }
+
+
+    /**
+     * Packet processor responsible for forwarding packets along their paths.
+     */
+    private class ProxyNdpProcessor 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;
+            }
+
+            // Handle the neighbor discovery packet.
+            proxyArpService.handlePacket(context);
+        }
+    }
+}
+
+
diff --git a/apps/proxyndp/src/main/java/org/onosproject/proxyndp/package-info.java b/apps/proxyndp/src/main/java/org/onosproject/proxyndp/package-info.java
new file mode 100644
index 0000000..10c6134
--- /dev/null
+++ b/apps/proxyndp/src/main/java/org/onosproject/proxyndp/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * 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.
+ */
+
+/**
+ * Proxy Ndp  application that handles IPv6 neighbor resolution for you.
+ */
+package org.onosproject.proxyndp;