amit.ghosh | 6104cf5 | 2021-01-07 16:53:28 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2018-present Open Networking Foundation |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.opencord.olttopology.impl; |
| 17 | |
| 18 | import static java.util.concurrent.Executors.newSingleThreadExecutor; |
| 19 | import static org.onlab.util.Tools.groupedThreads; |
| 20 | |
| 21 | import org.apache.commons.lang.ArrayUtils; |
| 22 | import org.onlab.packet.EthType; |
| 23 | import org.onlab.packet.Ethernet; |
| 24 | import org.onlab.packet.Ip4Address; |
| 25 | import org.onlab.packet.LLDP; |
| 26 | import org.onlab.packet.LLDPTLV; |
| 27 | import org.onlab.packet.MacAddress; |
| 28 | import org.onlab.util.KryoNamespace; |
| 29 | import org.onosproject.cfg.ComponentConfigService; |
| 30 | import org.onosproject.codec.CodecService; |
| 31 | import org.onosproject.core.ApplicationId; |
| 32 | import org.onosproject.core.CoreService; |
| 33 | import org.onosproject.mastership.MastershipService; |
| 34 | import org.onosproject.net.ConnectPoint; |
| 35 | import org.onosproject.net.Device; |
| 36 | import org.onosproject.net.DeviceId; |
| 37 | import org.onosproject.net.Port; |
| 38 | import org.onosproject.net.device.DeviceEvent; |
| 39 | import org.onosproject.net.device.DeviceListener; |
| 40 | import org.onosproject.net.device.DeviceService; |
| 41 | import org.onosproject.net.flow.DefaultTrafficTreatment; |
| 42 | import org.onosproject.net.flow.TrafficTreatment; |
| 43 | import org.onosproject.net.flowobjective.FlowObjectiveService; |
| 44 | import org.onosproject.net.packet.DefaultOutboundPacket; |
| 45 | import org.onosproject.net.packet.InboundPacket; |
| 46 | import org.onosproject.net.packet.OutboundPacket; |
| 47 | import org.onosproject.net.packet.PacketContext; |
| 48 | import org.onosproject.net.packet.PacketProcessor; |
| 49 | import org.onosproject.net.packet.PacketService; |
| 50 | import org.onosproject.store.serializers.KryoNamespaces; |
| 51 | import org.onosproject.store.service.EventuallyConsistentMap; |
| 52 | import org.onosproject.store.service.StorageService; |
| 53 | import org.onosproject.store.service.WallClockTimestamp; |
| 54 | import org.opencord.olttopology.OltNeighborInfo; |
| 55 | import org.opencord.olttopology.OltTopologyInformationService; |
| 56 | import org.opencord.sadis.BaseInformationService; |
| 57 | import org.opencord.sadis.SadisService; |
| 58 | import org.opencord.sadis.SubscriberAndDeviceInformation; |
| 59 | import org.osgi.service.component.ComponentContext; |
| 60 | import org.osgi.service.component.annotations.Activate; |
| 61 | import org.osgi.service.component.annotations.Component; |
| 62 | import org.osgi.service.component.annotations.Deactivate; |
| 63 | import org.osgi.service.component.annotations.Modified; |
| 64 | import org.osgi.service.component.annotations.Reference; |
| 65 | import org.osgi.service.component.annotations.ReferenceCardinality; |
| 66 | import org.slf4j.Logger; |
| 67 | |
| 68 | import java.nio.ByteBuffer; |
| 69 | import java.util.ArrayList; |
| 70 | import java.util.Arrays; |
| 71 | import java.util.Dictionary; |
| 72 | import java.util.List; |
| 73 | import java.util.Map; |
| 74 | import java.util.Map.Entry; |
| 75 | import java.util.Objects; |
| 76 | import java.util.Optional; |
| 77 | import java.util.Properties; |
| 78 | import java.util.concurrent.ConcurrentHashMap; |
| 79 | import java.util.concurrent.Executors; |
| 80 | import java.util.concurrent.ScheduledExecutorService; |
| 81 | import java.util.concurrent.ScheduledFuture; |
| 82 | import java.util.concurrent.TimeUnit; |
| 83 | import java.util.concurrent.ExecutorService; |
| 84 | import java.util.stream.Collectors; |
| 85 | |
| 86 | import static org.onlab.util.Tools.get; |
| 87 | import static org.opencord.olttopology.impl.OsgiPropertyConstants.DEFAULT_CHASSIS_ID; |
| 88 | import static org.opencord.olttopology.impl.OsgiPropertyConstants.DEFAULT_CHASSIS_ID_DEFAULT; |
| 89 | import static org.opencord.olttopology.impl.OsgiPropertyConstants.DEFAULT_DEST_MAC_ADDRESS; |
| 90 | import static org.opencord.olttopology.impl.OsgiPropertyConstants.DEFAULT_DEST_MAC_ADDRESS_DEFAULT; |
| 91 | import static org.opencord.olttopology.impl.OsgiPropertyConstants.DEFAULT_TTL_IN_SECS; |
| 92 | import static org.opencord.olttopology.impl.OsgiPropertyConstants.DEFAULT_TTL_IN_SECS_DEFAULT; |
| 93 | import static org.opencord.olttopology.impl.OsgiPropertyConstants.DEFAULT_LLDP_SEND_PERIODICITY; |
| 94 | import static org.opencord.olttopology.impl.OsgiPropertyConstants.LLDP_SEND_PERIODICITY_STR; |
| 95 | |
| 96 | import static org.slf4j.LoggerFactory.getLogger; |
| 97 | |
| 98 | /** |
| 99 | * Application to keep track of the topology of OLT devices. |
| 100 | */ |
| 101 | @Component(immediate = true, |
| 102 | property = { |
| 103 | DEFAULT_DEST_MAC_ADDRESS + ":String=" + DEFAULT_DEST_MAC_ADDRESS_DEFAULT, |
| 104 | DEFAULT_TTL_IN_SECS + ":Integer=" + DEFAULT_TTL_IN_SECS_DEFAULT, |
| 105 | DEFAULT_CHASSIS_ID + ":Integer=" + DEFAULT_CHASSIS_ID_DEFAULT, |
| 106 | LLDP_SEND_PERIODICITY_STR + ":Integer=" + DEFAULT_LLDP_SEND_PERIODICITY |
| 107 | } |
| 108 | ) |
| 109 | public class OltTopology implements OltTopologyInformationService { |
| 110 | // Subtype value for IPv4 as per the LLDP specs |
| 111 | public static final byte IP_ADDR_SUB_TYPE = 0x1; |
| 112 | // 5 below is address subtype + IP4 address len |
| 113 | public static final byte IP_ADDR_STRING_LEN = 0x5; |
| 114 | // Value of interface sub type as per the LLDP specs |
| 115 | public static final byte INTERFACE_SUB_TYPE = 0x1; |
| 116 | // Value of interface number set in the management address |
| 117 | // field of LLDP packets being sent out |
| 118 | public static final int INTERFACE_NUM = 0; |
| 119 | // Value of the OID set in the management address field of |
| 120 | // LLDP packets being sent out |
| 121 | public static final byte OID_STRING = 0x0; |
| 122 | // Value of SystemName TLV as per the LLDP specs |
| 123 | public static final byte SYSTEMNAME_TLV_TYPE = 0x5; |
| 124 | // Value of Management Address TLV as per the LLDP specs |
| 125 | public static final byte MANAGEMENT_ADDR_TLV_TYPE = 0x8; |
| 126 | // Value of Port TLV sub type as per the LLDP specs |
| 127 | public static final byte PORT_TLV_SUB_TYPE = 5; |
| 128 | private static final String APP_NAME = "org.opencord.olttopology"; |
| 129 | // Name for the consistent map where the neighbor information is stored |
| 130 | private static final String NEIGHBORS = "olt-neighbors"; |
| 131 | private final Logger log = getLogger(getClass()); |
| 132 | // deviceListener to be able to receive events about the OLT devices |
| 133 | private final DeviceListener deviceListener = new InternalDeviceListener(); |
| 134 | // Service to execute periodic sending of LLDP packets |
| 135 | private final ScheduledExecutorService scheduledExecutorService = |
| 136 | Executors.newSingleThreadScheduledExecutor(); |
| 137 | // our application-specific event handler for processing LLDP messages |
| 138 | // received from the OLT devices |
| 139 | private final ReactivePacketProcessor processor = new ReactivePacketProcessor(); |
| 140 | // Map for storing information about the OLTs, is map of OLT deviceId to |
| 141 | // uplink port of the OLT |
| 142 | private final Map<DeviceId, Port> oltPortMap = new ConcurrentHashMap<>(); |
| 143 | // cfg variable to set the parameters dynamically. |
| 144 | protected String destMacAddress = DEFAULT_DEST_MAC_ADDRESS_DEFAULT; |
| 145 | // References to the various services that this app uses |
| 146 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 147 | protected MastershipService mastershipService; |
| 148 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 149 | protected DeviceService deviceService; |
| 150 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 151 | protected CoreService coreService; |
| 152 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 153 | protected ComponentConfigService componentConfigService; |
| 154 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 155 | protected PacketService packetService; |
| 156 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 157 | protected StorageService storageService; |
| 158 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 159 | protected CodecService codecService; |
| 160 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 161 | protected SadisService sadisService; |
| 162 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 163 | protected FlowObjectiveService flowObjectiveService; |
| 164 | protected BaseInformationService<SubscriberAndDeviceInformation> subsService; |
| 165 | private short ttlInSecs = DEFAULT_TTL_IN_SECS_DEFAULT; |
| 166 | private int chassisId = DEFAULT_CHASSIS_ID_DEFAULT; |
| 167 | private int lldpSendPeriodicity = DEFAULT_LLDP_SEND_PERIODICITY; |
| 168 | private ApplicationId appId; |
| 169 | // Map for storing information about the neighbor connected to an OLT port |
| 170 | private EventuallyConsistentMap<ConnectPoint, OltNeighborInfo> neighbors; |
| 171 | private ScheduledFuture<?> futureTask; |
| 172 | |
| 173 | protected ExecutorService packetProcessorExecutor; |
| 174 | protected ExecutorService eventExecutor; |
| 175 | |
| 176 | private static boolean isNniPort(Port port) { |
| 177 | if (port.annotations().keys().contains("portName")) { |
| 178 | return port.annotations().value("portName").contains("nni-"); |
| 179 | } |
| 180 | return false; |
| 181 | } |
| 182 | |
| 183 | @Activate |
| 184 | public void activate(ComponentContext context) { |
| 185 | modified(context); |
| 186 | appId = coreService.registerApplication(APP_NAME); |
| 187 | componentConfigService.registerProperties(getClass()); |
| 188 | codecService.registerCodec(OltNeighborInfo.class, new OltTopologyInformationCodec()); |
| 189 | |
| 190 | subsService = sadisService.getSubscriberInfoService(); |
| 191 | |
| 192 | // look for all provisioned devices in Sadis and put them in oltData |
| 193 | deviceService.getDevices().forEach(this::createAndProcessDevice); |
| 194 | |
| 195 | // The NEIGHBORS map should be available across ONOS instance failures, |
| 196 | // create it using the storage service. |
| 197 | KryoNamespace serializer = KryoNamespace.newBuilder() |
| 198 | .register(KryoNamespaces.API) |
| 199 | .register(OltNeighborInfo.class) |
| 200 | .register(ConnectPoint.class) |
| 201 | .register(java.util.Date.class) |
| 202 | .register(org.onosproject.net.Port.class) |
| 203 | .register(org.onlab.packet.LLDPOrganizationalTLV.class) |
| 204 | .build(); |
| 205 | |
| 206 | neighbors = storageService.<ConnectPoint, OltNeighborInfo>eventuallyConsistentMapBuilder() |
| 207 | .withName(NEIGHBORS) |
| 208 | .withSerializer(serializer) |
| 209 | .withTimestampProvider((k, v) -> new WallClockTimestamp()) |
| 210 | .build(); |
| 211 | |
| 212 | deviceService.addListener(deviceListener); |
| 213 | |
| 214 | // register our event handler |
| 215 | packetService.addProcessor(processor, PacketProcessor.director(2)); |
| 216 | futureTask = scheduledExecutorService.scheduleAtFixedRate(this::oltTopologyTimerTask, 0, lldpSendPeriodicity, |
| 217 | TimeUnit.MINUTES); |
| 218 | packetProcessorExecutor = newSingleThreadExecutor(groupedThreads("onos/olttopology", "packet-%d", log)); |
| 219 | eventExecutor = newSingleThreadExecutor(groupedThreads("onos/olttopology", "events-%d", log)); |
| 220 | |
| 221 | log.info("Started with Application ID {}", appId.id()); |
| 222 | } |
| 223 | |
| 224 | @Deactivate |
| 225 | public void deactivate() { |
| 226 | futureTask.cancel(true); |
| 227 | scheduledExecutorService.shutdownNow(); |
| 228 | packetService.removeProcessor(processor); |
| 229 | deviceService.removeListener(deviceListener); |
| 230 | codecService.unregisterCodec(OltNeighborInfo.class); |
| 231 | componentConfigService.unregisterProperties(getClass(), false); |
| 232 | packetProcessorExecutor.shutdown(); |
| 233 | eventExecutor.shutdown(); |
| 234 | log.info("Stopped"); |
| 235 | } |
| 236 | |
| 237 | @Modified |
| 238 | public void modified(ComponentContext context) { |
| 239 | Dictionary<?, ?> properties = context != null ? context.getProperties() : new Properties(); |
| 240 | try { |
| 241 | String destMac = get(properties, DEFAULT_DEST_MAC_ADDRESS); |
| 242 | destMacAddress = Objects.isNull(destMac) ? DEFAULT_DEST_MAC_ADDRESS_DEFAULT : destMac; |
| 243 | String ttlInsecsStr = get(properties, DEFAULT_TTL_IN_SECS); |
| 244 | ttlInSecs = Short.parseShort(ttlInsecsStr.trim()); |
| 245 | |
| 246 | String chassisIdStr = get(properties, DEFAULT_CHASSIS_ID); |
| 247 | chassisId = Integer.parseInt(chassisIdStr.trim()); |
| 248 | |
| 249 | String lldpPeriodicity = get(properties, LLDP_SEND_PERIODICITY_STR); |
| 250 | int newLldpSendPeriodicity = Integer.parseInt(lldpPeriodicity); |
| 251 | |
| 252 | if (newLldpSendPeriodicity <= 0) { |
| 253 | log.error("lldpSendPeriodicity should be a positive integer"); |
| 254 | } else if (newLldpSendPeriodicity != lldpSendPeriodicity) { |
| 255 | lldpSendPeriodicity = newLldpSendPeriodicity; |
| 256 | lldpPeriodicity(newLldpSendPeriodicity); |
| 257 | } |
| 258 | |
| 259 | log.debug("OLT properties: destMacAddress: {}, ttlInSecs: {}, chassisId: {}, lldpSendPeriodicity{}", |
| 260 | destMacAddress, ttlInSecs, chassisId, lldpSendPeriodicity); |
| 261 | } catch (Exception e) { |
| 262 | log.error("Error while modifying the properties", e); |
| 263 | } |
| 264 | } |
| 265 | |
| 266 | @Override |
| 267 | public Map<ConnectPoint, OltNeighborInfo> getNeighbours() { |
| 268 | return neighbors.entrySet().stream().collect(Collectors.toMap(Entry::getKey, Entry::getValue)); |
| 269 | } |
| 270 | |
| 271 | /** |
| 272 | * Sets periodicity in minutes for sending out LLDP packet to OLT NNI Ports. |
| 273 | * |
| 274 | * @param timer Value in minutes. |
| 275 | */ |
| 276 | @Override |
| 277 | public void lldpPeriodicity(int timer) { |
| 278 | if (timer > 0) { |
| 279 | if (futureTask != null) { |
| 280 | futureTask.cancel(true); |
| 281 | } |
| 282 | |
| 283 | futureTask = scheduledExecutorService.scheduleAtFixedRate(this::oltTopologyTimerTask, 0, |
| 284 | timer, |
| 285 | TimeUnit.MINUTES); |
| 286 | log.info("LLDP Packet out Periodicity updated to {} minutes", timer); |
| 287 | } |
| 288 | } |
| 289 | |
| 290 | /** |
| 291 | * Creates entry in the oltData map. |
| 292 | * provision LLDP flow on enabled NNI ports if device is present in Sadis config |
| 293 | * |
| 294 | * @param dev Device to look for |
| 295 | */ |
| 296 | private void createAndProcessDevice(Device dev) { |
| 297 | SubscriberAndDeviceInformation deviceInfo = subsService.get(dev.serialNumber()); |
| 298 | log.debug("CreateAndProcessDevice: deviceInfo {}", deviceInfo); |
| 299 | |
| 300 | if (deviceInfo != null) { |
| 301 | // TODO FIXME, this works only with one NNI |
| 302 | Optional<Port> optPort = deviceService.getPorts(dev.id()) |
| 303 | .stream().filter(OltTopology::isNniPort).findFirst(); |
| 304 | if (optPort.isPresent()) { |
| 305 | Port port = optPort.get(); |
| 306 | oltPortMap.put(dev.id(), port); |
| 307 | return; |
| 308 | } |
| 309 | } |
| 310 | log.warn("CreateAndProcessDevice: failed to update the oltdata for device {}", dev); |
| 311 | } |
| 312 | |
| 313 | /** |
| 314 | * Updates OltData Map with new AccessDeviceData if it is already present in OltMap, |
| 315 | * Provisions LLDP flow on enabled NNI port if it is present in Sadis config |
| 316 | * Only one NNI port is supported as of now. |
| 317 | * |
| 318 | * @param dev Device to look for |
| 319 | * @param uplink Uplink port number |
| 320 | * @return true if updated else false |
| 321 | */ |
| 322 | private boolean updateOltData(Device dev, Port uplink) { |
| 323 | // check if this device is provisioned in Sadis |
| 324 | SubscriberAndDeviceInformation deviceInfo = subsService.get(dev.serialNumber()); |
| 325 | log.debug("updateAccessDevice: deviceInfo {}", deviceInfo); |
| 326 | |
| 327 | if (deviceInfo != null) { |
| 328 | oltPortMap.replace(dev.id(), uplink); |
| 329 | log.debug("updateAccessDevice: Stored did {} uplink {}", dev.id(), uplink); |
| 330 | return true; |
| 331 | } |
| 332 | return false; |
| 333 | } |
| 334 | |
| 335 | /** |
| 336 | * Sends LLDP Packet to OLT NNI Port. |
| 337 | * |
| 338 | * @param devId Access Device data for OLT |
| 339 | * @param nniPort NNI port info of OLT |
| 340 | */ |
| 341 | private void sendLldpPackets(DeviceId devId, Port nniPort) { |
| 342 | if (!mastershipService.isLocalMaster(devId)) { |
| 343 | return; |
| 344 | } |
| 345 | |
| 346 | // Get NNI Port name to be filled in LLDP packet port TLV. |
| 347 | String portName = (nniPort.annotations().value("portName").isEmpty()) ? "" : |
| 348 | nniPort.annotations().value("portName"); |
| 349 | |
| 350 | // Get System Name value from device name. |
| 351 | Device d = deviceService.getDevice(devId); |
| 352 | String[] systemName = d.id().uri().toString().split(":", 2); |
| 353 | |
| 354 | MacAddress destMac = MacAddress.valueOf(destMacAddress); |
| 355 | MacAddress srcMac = createMacFromDevId(d.id()); |
| 356 | |
| 357 | SubscriberAndDeviceInformation deviceInfo = subsService.get(d.serialNumber()); |
| 358 | |
| 359 | // Initialized deviceIP address, to be sent in Management Address TLV. |
| 360 | Ip4Address devIpAddr = Ip4Address.valueOf("0.0.0.0"); |
| 361 | |
| 362 | // Get OLT device IP address from deviceInfo, to be filled in management address TLV. |
| 363 | if (deviceInfo != null) { |
| 364 | devIpAddr = deviceInfo.ipAddress(); |
| 365 | log.debug("sendLldpPackets: did {} nniPort {} devIP {}", d.id(), nniPort, devIpAddr); |
| 366 | } else { |
| 367 | log.warn("device {} not found in Sadis NOT sending LLDP packet", d.id()); |
| 368 | return; |
| 369 | } |
| 370 | |
| 371 | //Created LLDP packet. |
| 372 | Ethernet packet = createLldpPacket(destMac, srcMac, chassisId, |
| 373 | portName, ttlInSecs, systemName[1], devIpAddr |
| 374 | .toString()); |
| 375 | |
| 376 | // Create the connect point to send the packet to and emit |
| 377 | ConnectPoint toSendTo = new ConnectPoint(d.id(), nniPort.number()); |
| 378 | |
| 379 | //Sends LLDP packet to connect point(NNI port). |
| 380 | TrafficTreatment t = DefaultTrafficTreatment.builder() |
| 381 | .setOutput(toSendTo.port()).build(); |
| 382 | OutboundPacket o = new DefaultOutboundPacket( |
| 383 | toSendTo.deviceId(), t, |
| 384 | ByteBuffer.wrap(packet.serialize())); |
| 385 | if (log.isTraceEnabled()) { |
| 386 | log.trace("Sending LLDP packet {} at {}", |
| 387 | packet, toSendTo); |
| 388 | } |
| 389 | |
| 390 | packetService.emit(o); |
| 391 | } |
| 392 | |
| 393 | /** |
| 394 | * Creates MAC address for LLDP packet from OLT device ID string. |
| 395 | * |
| 396 | * @param id Device ID of OLT |
| 397 | * @return Mac address |
| 398 | */ |
| 399 | private MacAddress createMacFromDevId(DeviceId id) { |
| 400 | String strId = id.toString(); |
| 401 | String macStr = strId.substring(7); |
| 402 | String formattedMac = macStr.replaceAll("(.{2})", "$1" + ":"); |
| 403 | formattedMac = formattedMac.substring(0, formattedMac.length() - 1); |
| 404 | |
| 405 | return MacAddress.valueOf(formattedMac); |
| 406 | } |
| 407 | |
| 408 | /** |
| 409 | * Creates LLDP packet to be sent out of OLT. |
| 410 | * |
| 411 | * @param destMac Destination LLDP Mac address |
| 412 | * @param srcMac Source Mac of OLT device |
| 413 | * @param chassisId Chassis ID TLV value |
| 414 | * @param port NNI port information |
| 415 | * @param ttl TTL value in sec |
| 416 | * @param systemName System name TLV value |
| 417 | * @param mgmtAddr Management Address TLV value |
| 418 | * @return LLDP ethernet packet |
| 419 | */ |
| 420 | private Ethernet createLldpPacket(MacAddress destMac, MacAddress srcMac, |
| 421 | int chassisId, String port, short ttl, |
| 422 | String systemName, String mgmtAddr) { |
| 423 | |
| 424 | Ethernet ethPkt = new Ethernet(); |
| 425 | ethPkt.setEtherType(Ethernet.TYPE_LLDP); |
| 426 | ethPkt.setDestinationMACAddress(destMac); |
| 427 | ethPkt.setSourceMACAddress(srcMac); |
| 428 | |
| 429 | LLDP lldpPkt = new LLDP(); |
| 430 | |
| 431 | setChassisId(lldpPkt, chassisId); |
| 432 | setPortId(lldpPkt, port); |
| 433 | setTtl(lldpPkt, ttl); |
| 434 | |
| 435 | List<LLDPTLV> optionalTlv = new ArrayList<>(); |
| 436 | optionalTlv.add(createSystemNameTlv(systemName)); |
| 437 | optionalTlv.add(createMgmtAddressTlv(mgmtAddr)); |
| 438 | |
| 439 | lldpPkt.setOptionalTLVList(optionalTlv); |
| 440 | |
| 441 | ethPkt.setPayload(lldpPkt); |
| 442 | return ethPkt; |
| 443 | } |
| 444 | |
| 445 | /** |
| 446 | * Sets Chassis ID TLV for LLDP packet. |
| 447 | * |
| 448 | * @param lldpPkt LLDP packet reference |
| 449 | * @param chassisId Chassid ID tlv value |
| 450 | */ |
| 451 | private void setChassisId(LLDP lldpPkt, final int chassisId) { |
| 452 | final byte chassisTlvSubtype = 1; |
| 453 | |
| 454 | byte[] chassis = ArrayUtils.addAll(new byte[]{chassisTlvSubtype}, |
| 455 | ByteBuffer.allocate(String.valueOf(chassisId).length()) |
| 456 | .put(String.valueOf(chassisId).getBytes()).array()); |
| 457 | |
| 458 | LLDPTLV chassisTlv = new LLDPTLV(); |
| 459 | lldpPkt.setChassisId(chassisTlv.setLength((byte) chassis.length) |
| 460 | .setType(LLDP.CHASSIS_TLV_TYPE) |
| 461 | .setValue(chassis)); |
| 462 | } |
| 463 | |
| 464 | /** |
| 465 | * Sets Port ID tlv for LLDP packet. |
| 466 | * |
| 467 | * @param lldpPkt LLDP packet reference |
| 468 | * @param ifaceName Port Name TLV value |
| 469 | */ |
| 470 | private void setPortId(LLDP lldpPkt, final String ifaceName) { |
| 471 | |
| 472 | byte[] port = ArrayUtils.addAll(new byte[]{PORT_TLV_SUB_TYPE}, |
| 473 | ifaceName.getBytes()); |
| 474 | |
| 475 | LLDPTLV portTlv = new LLDPTLV(); |
| 476 | lldpPkt.setPortId(portTlv.setLength((byte) port.length) |
| 477 | .setType(LLDP.PORT_TLV_TYPE) |
| 478 | .setValue(port)); |
| 479 | } |
| 480 | |
| 481 | /** |
| 482 | * Sets TTL tlv for LLDP packet. |
| 483 | * |
| 484 | * @param lldpPkt LLDP Packet reference |
| 485 | * @param timeInSecs TTL tlv value in sec |
| 486 | */ |
| 487 | private void setTtl(LLDP lldpPkt, final short timeInSecs) { |
| 488 | byte[] time = ByteBuffer.allocate(2).putShort(timeInSecs).array(); |
| 489 | |
| 490 | LLDPTLV ttlTlv = new LLDPTLV(); |
| 491 | |
| 492 | lldpPkt.setTtl(ttlTlv.setType(LLDP.TTL_TLV_TYPE) |
| 493 | .setLength((short) time.length) |
| 494 | .setValue(time)); |
| 495 | } |
| 496 | |
| 497 | /** |
| 498 | * Creates System name TLV for LLDP packet. |
| 499 | * |
| 500 | * @param systemName System name tlv value |
| 501 | * @return systemName TLV |
| 502 | */ |
| 503 | private LLDPTLV createSystemNameTlv(String systemName) { |
| 504 | byte[] bytes = systemName.getBytes(); |
| 505 | |
| 506 | LLDPTLV sysNameTlv = new LLDPTLV(); |
| 507 | |
| 508 | return sysNameTlv.setType(SYSTEMNAME_TLV_TYPE) |
| 509 | .setLength((byte) bytes.length) |
| 510 | .setValue(bytes); |
| 511 | } |
| 512 | |
| 513 | /** |
| 514 | * Sets Management address TLV for LLDP packet. |
| 515 | * |
| 516 | * @param mgmtAddress Management address tlv value |
| 517 | * @return Management address TLV |
| 518 | */ |
| 519 | private LLDPTLV createMgmtAddressTlv(String mgmtAddress) { |
| 520 | |
| 521 | Ip4Address ipAddr = Ip4Address.valueOf(mgmtAddress); |
| 522 | |
| 523 | byte[] addrStr = ArrayUtils.addAll(new byte[]{IP_ADDR_SUB_TYPE}, |
| 524 | ipAddr.toOctets()); |
| 525 | |
| 526 | byte[] ipAddrBytes = ArrayUtils.addAll(new byte[]{IP_ADDR_STRING_LEN}, |
| 527 | addrStr); |
| 528 | |
| 529 | byte[] bytesInterfacetype = ArrayUtils.addAll(ipAddrBytes, |
| 530 | ByteBuffer.allocate(1).put(INTERFACE_SUB_TYPE).array()); |
| 531 | byte[] bytesInterfaceNumber = ArrayUtils.addAll(bytesInterfacetype, |
| 532 | ByteBuffer.allocate(4).putInt(INTERFACE_NUM).array()); |
| 533 | byte[] finalMgmtAddrBytes = ArrayUtils.addAll(bytesInterfaceNumber, |
| 534 | ByteBuffer.allocate(1).put(OID_STRING).array()); |
| 535 | |
| 536 | LLDPTLV mgmtAddrTlv = new LLDPTLV(); |
| 537 | return mgmtAddrTlv.setType(MANAGEMENT_ADDR_TLV_TYPE) |
| 538 | .setLength((byte) finalMgmtAddrBytes.length) |
| 539 | .setValue(finalMgmtAddrBytes); |
| 540 | } |
| 541 | |
| 542 | /** |
| 543 | * Processes incoming LLDP packets from NNI ports. |
| 544 | * |
| 545 | * @param pkt Inbound packet received at ONOS from OLT NNI port |
| 546 | */ |
| 547 | private void handleLldpPacket(InboundPacket pkt) { |
| 548 | |
| 549 | Ethernet packet = pkt.parsed(); |
| 550 | |
| 551 | if (packet == null) { |
| 552 | log.warn("Packet is null"); |
| 553 | return; |
| 554 | } |
| 555 | |
| 556 | log.debug("Got a packet {}", packet); |
| 557 | |
| 558 | // Check if Ethernet type is LLDP. |
| 559 | if (packet.getEtherType() == Ethernet.TYPE_LLDP) { |
| 560 | // Get payload of Packet. |
| 561 | LLDP lldpPacket = (LLDP) packet.getPayload(); |
| 562 | |
| 563 | // Fetch all optional TLVs from Packet. |
| 564 | List<LLDPTLV> optionalTLVs = lldpPacket.getOptionalTLVList(); |
| 565 | |
| 566 | // Look for the system name and neighbor |
| 567 | // management IP address TLVs. |
| 568 | String systemName = null; |
| 569 | String neighMgmtAddr = ""; |
| 570 | if (optionalTLVs != null) { |
| 571 | for (LLDPTLV tlv : optionalTLVs) { |
| 572 | // Fetching system name TLV. |
| 573 | if (tlv.getType() == SYSTEMNAME_TLV_TYPE) { |
| 574 | systemName = new String(tlv.getValue()); |
| 575 | } else if (tlv.getType() == MANAGEMENT_ADDR_TLV_TYPE) { |
| 576 | /* Fetching 4 Octets from MANAGEMENT Address TLV to get IP address. */ |
| 577 | byte[] neighMgmtIpBytes = Arrays.copyOfRange(tlv.getValue(), 2, 6); |
| 578 | Ip4Address neighMgmtIpaddress = Ip4Address.valueOf(neighMgmtIpBytes); |
| 579 | neighMgmtAddr = neighMgmtIpaddress.toString(); |
| 580 | } |
| 581 | } |
| 582 | } |
| 583 | |
| 584 | if (systemName == null) { |
| 585 | // We expect the system name to be sent by the neighbor, in absence |
| 586 | // we don't store the information |
| 587 | return; |
| 588 | } |
| 589 | |
| 590 | int portIdTlvLen = lldpPacket.getPortId().getLength(); |
| 591 | |
| 592 | String portName = new String(lldpPacket.getPortId().getValue()) |
| 593 | .substring(1, portIdTlvLen); |
| 594 | |
| 595 | // The OLT name stored in the topology information is the device uri |
| 596 | // excluding the "of:" part |
| 597 | DeviceId devId = pkt.receivedFrom().deviceId(); |
| 598 | String deviceUri = devId.uri().toString(); |
| 599 | String[] oltName = deviceUri.split(":", 2); |
| 600 | Port oltNni = deviceService.getPort(pkt.receivedFrom()); |
| 601 | |
| 602 | String devSerial = deviceService.getDevice(devId).serialNumber(); |
| 603 | |
| 604 | // Creating object of OltNeighborInfo with all info required. |
| 605 | OltNeighborInfo newNeighbor = new OltNeighborInfo(systemName, |
| 606 | portName, |
| 607 | oltName[1], |
| 608 | oltNni, |
| 609 | devSerial); |
| 610 | newNeighbor.setMgmtAddress(neighMgmtAddr); |
| 611 | |
| 612 | // Store all the other optional in the neighbour information |
| 613 | // this is for future use |
| 614 | for (LLDPTLV tlv : optionalTLVs) { |
| 615 | if (tlv.getType() != SYSTEMNAME_TLV_TYPE && tlv.getType() != MANAGEMENT_ADDR_TLV_TYPE) { |
| 616 | newNeighbor.addOtherOptionalLldpTlvs(tlv); |
| 617 | } |
| 618 | } |
| 619 | |
| 620 | /* |
| 621 | Checking if Neighbor information is already present. |
| 622 | If Yes, then update current information, else |
| 623 | adding new information. |
| 624 | */ |
| 625 | OltNeighborInfo curNeighbor = neighbors.get(pkt.receivedFrom()); |
| 626 | if (newNeighbor.equals(curNeighbor)) { |
| 627 | curNeighbor.updateTimeStamp(); |
| 628 | neighbors.put(pkt.receivedFrom(), curNeighbor); |
| 629 | } else { |
| 630 | // received first time on this connect point or old was purged |
| 631 | neighbors.put(pkt.receivedFrom(), newNeighbor); |
| 632 | } |
| 633 | } |
| 634 | } |
| 635 | |
| 636 | /** |
| 637 | * Removes Entry for device from Olt topology table. |
| 638 | * |
| 639 | * @param devIdToRm Device ID to be removed |
| 640 | */ |
| 641 | void removeNeighborsOfDevice(DeviceId devIdToRm) { |
| 642 | for (Map.Entry<ConnectPoint, OltNeighborInfo> neighEntry : neighbors.entrySet()) { |
| 643 | if (neighEntry.getKey().deviceId().toString().contains(devIdToRm.toString())) { |
| 644 | neighbors.remove(neighEntry.getKey()); |
| 645 | } |
| 646 | } |
| 647 | } |
| 648 | |
| 649 | /** |
| 650 | * oltTopologyTimerTask method to send LLDP packets periodically to the neighbours. |
| 651 | */ |
| 652 | public void oltTopologyTimerTask() { |
| 653 | oltPortMap.forEach((key, p) -> { |
| 654 | //Port p = deviceService.getPort(key, value); |
| 655 | if (p != null && p.isEnabled()) { |
| 656 | sendLldpPackets(key, p); |
| 657 | } |
| 658 | }); |
| 659 | } |
| 660 | |
| 661 | private class InternalDeviceListener implements DeviceListener { |
| 662 | /** |
| 663 | * Device Listener Event, will be called if Device is added or state is changed or Updated. |
| 664 | * |
| 665 | * @param event Device event |
| 666 | */ |
| 667 | @Override |
| 668 | public void event(DeviceEvent event) { |
| 669 | eventExecutor.execute(() -> { |
| 670 | DeviceId devId = event.subject().id(); |
| 671 | /* Checking DEVICE_REMOVED and DEVICE_AVAILABILITY_CHANGED events before |
| 672 | Mastership check as with these events mastership check will always give false. |
| 673 | */ |
| 674 | if (event.type().equals(DeviceEvent.Type.DEVICE_REMOVED)) { |
| 675 | removeNeighborsOfDevice(devId); |
| 676 | return; |
| 677 | } else if (event.type().equals(DeviceEvent.Type.DEVICE_AVAILABILITY_CHANGED)) { |
| 678 | if (!deviceService.isAvailable(devId)) { |
| 679 | removeNeighborsOfDevice(devId); |
| 680 | return; |
| 681 | } |
| 682 | } |
| 683 | |
| 684 | if (!mastershipService.isLocalMaster(devId)) { |
| 685 | return; |
| 686 | } |
| 687 | |
| 688 | switch (event.type()) { |
| 689 | case DEVICE_ADDED: |
| 690 | if (!oltPortMap.containsKey(devId)) { |
| 691 | createAndProcessDevice(deviceService.getDevice(devId)); |
| 692 | } |
| 693 | break; |
| 694 | case PORT_ADDED: |
| 695 | /* |
| 696 | If NNI port is detected, update it in the map. |
| 697 | */ |
| 698 | /* TODO: put null check for the annotations return*/ |
| 699 | if (isNniPort(event.port())) { |
| 700 | if (oltPortMap.containsKey(devId)) { |
| 701 | if (!updateOltData(deviceService.getDevice(devId), event.port())) { |
| 702 | return; |
| 703 | } |
| 704 | } else { |
| 705 | return; |
| 706 | } |
| 707 | } |
| 708 | |
| 709 | if (Objects.nonNull(oltPortMap.get(devId)) && |
| 710 | oltPortMap.get(devId).equals(event.port()) && |
| 711 | event.port().isEnabled()) { |
| 712 | sendLldpPackets(devId, event.port()); |
| 713 | } |
| 714 | break; |
| 715 | case PORT_REMOVED: |
| 716 | // Remove from neighbor map and LLDP flow if NNI port is removed. |
| 717 | if (Objects.nonNull(oltPortMap.get(devId)) && |
| 718 | oltPortMap.get(devId).equals(event.port())) { |
| 719 | // the uplink port has been removed; remove the connect |
| 720 | // point from the neighbors |
| 721 | neighbors.remove(new ConnectPoint(devId, event.port().number())); |
| 722 | } |
| 723 | break; |
| 724 | case PORT_UPDATED: |
| 725 | // if Port is enabled, provision LLDP flow and send LLDP packet to NNI Port. |
| 726 | if (!oltPortMap.get(devId).equals(event.port())) { |
| 727 | break; |
| 728 | } |
| 729 | if (event.port().isEnabled()) { |
| 730 | sendLldpPackets(devId, event.port()); |
| 731 | } else { |
| 732 | neighbors.remove(new ConnectPoint(devId, event.port().number())); |
| 733 | } |
| 734 | break; |
| 735 | |
| 736 | default: |
| 737 | log.debug("event {} not handle for the device {}", event.type(), devId); |
| 738 | break; |
| 739 | } |
| 740 | }); |
| 741 | } |
| 742 | } |
| 743 | |
| 744 | /* |
| 745 | * Class to do the processing of the LLDP packets received from the Packet Service. |
| 746 | */ |
| 747 | private class ReactivePacketProcessor implements PacketProcessor { |
| 748 | @Override |
| 749 | public void process(PacketContext context) { |
| 750 | packetProcessorExecutor.execute(() -> { |
| 751 | DeviceId devId = context.inPacket().receivedFrom().deviceId(); |
| 752 | if (!mastershipService.isLocalMaster(devId)) { |
| 753 | return; |
| 754 | } |
| 755 | // Extract the original Ethernet frame from the packet information |
| 756 | InboundPacket pkt = context.inPacket(); |
| 757 | Ethernet ethPkt = pkt.parsed(); |
| 758 | |
| 759 | if (ethPkt == null) { |
| 760 | log.warn("ethPkt null while processing context: {}", context); |
| 761 | return; |
| 762 | } |
| 763 | |
| 764 | if (EthType.EtherType.lookup(ethPkt.getEtherType()) == EthType.EtherType.LLDP) { |
| 765 | handleLldpPacket(context.inPacket()); |
| 766 | } |
| 767 | }); |
| 768 | } |
| 769 | } |
| 770 | } |