2 * Copyright (c) 2013 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.openflowplugin.openflow.md.lldp;
10 import java.math.BigInteger;
11 import java.util.Collections;
12 import java.util.List;
14 import java.util.Timer;
15 import java.util.TimerTask;
16 import java.util.concurrent.ConcurrentHashMap;
17 import org.opendaylight.controller.liblldp.EtherTypes;
18 import org.opendaylight.controller.liblldp.Ethernet;
19 import org.opendaylight.controller.liblldp.HexEncode;
20 import org.opendaylight.controller.liblldp.LLDP;
21 import org.opendaylight.controller.liblldp.LLDPTLV;
22 import org.opendaylight.controller.liblldp.PacketException;
23 import org.opendaylight.openflowplugin.api.openflow.md.util.OpenflowVersion;
24 import org.opendaylight.openflowplugin.api.openflow.md.ModelDrivenSwitch;
25 import org.opendaylight.openflowplugin.openflow.md.util.InventoryDataServiceUtil;
26 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev100924.MacAddress;
27 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNodeConnector;
28 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId;
29 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorRef;
30 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
31 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRef;
32 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnector;
33 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
34 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey;
35 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.TransmitPacketInput;
36 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.TransmitPacketInputBuilder;
37 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
38 import org.slf4j.Logger;
39 import org.slf4j.LoggerFactory;
42 public class LLDPSpeaker {
43 private static Logger LOG = LoggerFactory.getLogger(LLDPSpeaker.class);
45 private final Map<InstanceIdentifier<NodeConnector>, TransmitPacketInput> nodeConnectorMap = new ConcurrentHashMap<InstanceIdentifier<NodeConnector>, TransmitPacketInput>();
46 private final Map<InstanceIdentifier<Node>, ModelDrivenSwitch> nodeMap = new ConcurrentHashMap<InstanceIdentifier<Node>, ModelDrivenSwitch>();
47 private static final LLDPSpeaker instance = new LLDPSpeaker();
48 private Timer timer = new Timer();
49 private static final int DELAY = 0;
50 private static final int PERIOD = 1000 * 5;
52 private LLDPSpeaker() {
53 timer.schedule(new LLDPSpeakerTask(), DELAY, PERIOD);
56 public static LLDPSpeaker getInstance() {
60 public void addModelDrivenSwitch(InstanceIdentifier<Node> nodeInstanceId, ModelDrivenSwitch sw) {
61 nodeMap.put(nodeInstanceId, sw);
64 public void removeModelDrivenSwitch(InstanceIdentifier<Node> nodeInstanceId) {
65 nodeMap.remove(nodeInstanceId);
66 for (InstanceIdentifier<NodeConnector> nodeConnectorInstanceId : nodeConnectorMap.keySet()) {
67 if (nodeInstanceId.equals(nodeConnectorInstanceId.firstIdentifierOf(Node.class))) {
68 nodeConnectorMap.remove(nodeConnectorInstanceId);
73 public void addNodeConnector(InstanceIdentifier<NodeConnector> nodeConnectorInstanceId, NodeConnector nodeConnector) {
74 InstanceIdentifier<Node> nodeInstanceId = nodeConnectorInstanceId.firstIdentifierOf(Node.class);
75 ModelDrivenSwitch md = nodeMap.get(nodeInstanceId);
77 NodeKey nodeKey = InstanceIdentifier.keyOf(nodeInstanceId);
78 NodeId nodeId = nodeKey.getId();
79 NodeConnectorId nodeConnectorId = nodeConnector.getId();
80 FlowCapableNodeConnector flowConnector = nodeConnector.<FlowCapableNodeConnector>getAugmentation(FlowCapableNodeConnector.class);
81 TransmitPacketInputBuilder tpib = new TransmitPacketInputBuilder();
82 tpib.setEgress(new NodeConnectorRef(nodeConnectorInstanceId));
83 tpib.setNode(new NodeRef(nodeInstanceId));
84 if(nodeInstanceId == null) {
85 LOG.warn("addNodeConnector(): nodeInstanceId should not be null nodeConnectorInstanceId {} nodeConnector {}",nodeConnectorInstanceId,nodeConnector);
86 } else if (nodeConnectorInstanceId == null) {
87 LOG.warn("addNodeConnector(): nodeConnectorInstanceId should not be null nodeConnectorInstanceId {} nodeConnector {}",nodeConnectorInstanceId,nodeConnector);
88 } else if (flowConnector == null) {
89 LOG.warn("addNodeConnector(): flowConnector should not be null nodeConnectorInstanceId {} nodeConnector {}",nodeConnectorInstanceId,nodeConnector);
90 } else if (md == null) {
91 LOG.debug("addNodeConnector(): md is null, this usually means your switch disconnected while you had unprocessed NodeConnectorUpdated messages in queue nodeConnectorInstanceId {} nodeConnector {}",nodeConnectorInstanceId,nodeConnector);
92 } else if(md.getSessionContext() == null) {
93 LOG.warn("addNodeConnector(): md.getSessionContext() should not be null nodeConnectorInstanceId {} nodeConnector {}",nodeConnectorInstanceId,nodeConnector);
94 } else if (md.getSessionContext().getPrimaryConductor() == null) {
95 LOG.warn("addNodeConnector(): md.getSessionContext().getPrimaryConductor() should not be null nodeConnectorInstanceId {} nodeConnector {}",nodeConnectorInstanceId,nodeConnector);
97 tpib.setPayload(lldpDataFrom(nodeInstanceId,nodeConnectorInstanceId,flowConnector.getHardwareAddress(),
98 md.getSessionContext().getPrimaryConductor().getVersion()));
99 nodeConnectorMap.put(nodeConnectorInstanceId, tpib.build());
101 md.transmitPacket(nodeConnectorMap.get(nodeConnectorInstanceId));
105 public void removeNodeConnector(
106 InstanceIdentifier<NodeConnector> nodeConnectorInstanceId,
107 NodeConnector nodeConnector) {
108 nodeConnectorMap.remove(nodeConnectorInstanceId);
111 private byte[] lldpDataFrom(InstanceIdentifier<Node> nodeInstanceId, InstanceIdentifier<NodeConnector> nodeConnectorInstanceId, MacAddress src,
114 NodeId nodeId = InstanceIdentifier.keyOf(nodeInstanceId).getId();
115 NodeConnectorId nodeConnectorId = InstanceIdentifier.keyOf(nodeConnectorInstanceId).getId();
116 // Create LLDP TTL TLV
117 byte[] ttl = new byte[]{(byte) 0, (byte) 120};
118 LLDPTLV ttlTlv = new LLDPTLV();
119 ttlTlv.setType(LLDPTLV.TLVType.TTL.getValue()).setLength((short) ttl.length).setValue(ttl);
121 // Create LLDP ChassisID TLV
122 BigInteger dataPathId = InventoryDataServiceUtil.dataPathIdFromNodeId(nodeId);
123 byte[] cidValue = LLDPTLV.createChassisIDTLVValue(
124 colonize(InventoryDataServiceUtil.bigIntegerToPaddedHex(dataPathId)));
125 LLDPTLV chassisIdTlv = new LLDPTLV();
126 chassisIdTlv.setType(LLDPTLV.TLVType.ChassisID.getValue());
127 chassisIdTlv.setType(LLDPTLV.TLVType.ChassisID.getValue()).setLength((short) cidValue.length)
130 // Create LLDP SystemName TLV
131 byte[] snValue = LLDPTLV.createSystemNameTLVValue(nodeId.getValue());
132 LLDPTLV systemNameTlv = new LLDPTLV();
133 systemNameTlv.setType(LLDPTLV.TLVType.SystemName.getValue());
134 systemNameTlv.setType(LLDPTLV.TLVType.SystemName.getValue()).setLength((short) snValue.length)
137 // Create LLDP PortID TL
138 Long portNo = InventoryDataServiceUtil.portNumberfromNodeConnectorId(OpenflowVersion.get(version), nodeConnectorId);
140 String hexString = Long.toHexString(portNo);
141 byte[] pidValue = LLDPTLV.createPortIDTLVValue(hexString);
142 LLDPTLV portIdTlv = new LLDPTLV();
143 portIdTlv.setType(LLDPTLV.TLVType.PortID.getValue()).setLength((short) pidValue.length).setValue(pidValue);
144 portIdTlv.setType(LLDPTLV.TLVType.PortID.getValue());
146 // Create LLDP Custom TLV
147 byte[] customValue = LLDPTLV.createCustomTLVValue(nodeConnectorId.getValue());
148 LLDPTLV customTlv = new LLDPTLV();
149 customTlv.setType(LLDPTLV.TLVType.Custom.getValue()).setLength((short) customValue.length)
150 .setValue(customValue);
152 // Create LLDP Custom Option list
153 List<LLDPTLV> customList = Collections.singletonList(customTlv);
155 // Create discovery pkt
156 LLDP discoveryPkt = new LLDP();
157 discoveryPkt.setChassisId(chassisIdTlv).setPortId(portIdTlv).setTtl(ttlTlv).setSystemNameId(systemNameTlv)
158 .setOptionalTLVList(customList);
160 // Create ethernet pkt
161 byte[] sourceMac = HexEncode.bytesFromHexString(src.getValue());
162 Ethernet ethPkt = new Ethernet();
163 ethPkt.setSourceMACAddress(sourceMac).setDestinationMACAddress(LLDP.LLDPMulticastMac)
164 .setEtherType(EtherTypes.LLDP.shortValue()).setPayload(discoveryPkt);
167 byte[] data = ethPkt.serialize();
169 } catch (PacketException e) {
170 LOG.error("Error creating LLDP packet", e);
175 private class LLDPSpeakerTask extends TimerTask {
179 for (InstanceIdentifier<NodeConnector> nodeConnectorInstanceId : nodeConnectorMap.keySet()) {
180 InstanceIdentifier<Node> nodeInstanceId = nodeConnectorInstanceId.firstIdentifierOf(Node.class);
181 ModelDrivenSwitch md = nodeMap.get(nodeInstanceId);
182 md.transmitPacket(nodeConnectorMap.get(nodeConnectorInstanceId));
189 private String colonize(String orig) {
190 return orig.replaceAll("(?<=..)(..)", ":$1");