2 * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.l2switch.addresstracker.addressobserver;
10 import org.opendaylight.mdsal.binding.api.NotificationService.Listener;
11 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IetfInetUtil;
12 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.basepacket.rev140528.packet.chain.grp.PacketChain;
13 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.basepacket.rev140528.packet.chain.grp.packet.chain.packet.RawPacket;
14 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.basepacket.rev140528.packet.chain.grp.packet.chain.packet.raw.packet.RawPacketFields;
15 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.ethernet.rev140528.ethernet.packet.received.packet.chain.packet.EthernetPacket;
16 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.ipv6.rev140528.Ipv6PacketReceived;
17 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.ipv6.rev140528.ipv6.packet.received.packet.chain.packet.Ipv6Packet;
20 * AddressObserver listens to IPv6 packets to find addresses (mac, ip) and store
21 * these address observations for each node-connector. These packets are
22 * returned to the network after the addresses are learned.
24 public class AddressObserverUsingIpv6 implements Listener<Ipv6PacketReceived> {
25 private static final String IPV6_IP_TO_IGNORE = "0:0:0:0:0:0:0:0";
27 private final AddressObservationWriter addressObservationWriter;
29 public AddressObserverUsingIpv6(AddressObservationWriter addressObservationWriter) {
30 this.addressObservationWriter = addressObservationWriter;
34 * The handler function for IPv6 packets.
36 * @param packetReceived
37 * The incoming packet.
40 public void onNotification(Ipv6PacketReceived packetReceived) {
41 if (packetReceived == null || packetReceived.getPacketChain() == null) {
45 RawPacketFields rawPacket = null;
46 EthernetPacket ethernetPacket = null;
47 Ipv6Packet ipv6Packet = null;
48 for (PacketChain packetChain : packetReceived.getPacketChain()) {
49 if (packetChain.getPacket() instanceof RawPacket) {
50 rawPacket = ((RawPacket) packetChain.getPacket()).getRawPacketFields();
51 } else if (packetChain.getPacket() instanceof EthernetPacket) {
52 ethernetPacket = (EthernetPacket) packetChain.getPacket();
53 } else if (packetChain.getPacket() instanceof Ipv6Packet) {
54 ipv6Packet = (Ipv6Packet) packetChain.getPacket();
57 if (rawPacket == null || ethernetPacket == null || ipv6Packet == null) {
61 if (!IPV6_IP_TO_IGNORE.equals(ipv6Packet.getSourceIpv6().getValue())) {
62 addressObservationWriter.addAddress(ethernetPacket.getSourceMac(),
63 IetfInetUtil.ipAddressFor(ipv6Packet.getSourceIpv6().getValue()), rawPacket.getIngress());