tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016-present Open Networking Laboratory |
| 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.onosproject.isis.controller.impl; |
| 17 | |
| 18 | import org.jboss.netty.channel.Channel; |
| 19 | import org.onlab.packet.Ip4Address; |
| 20 | import org.onlab.packet.MacAddress; |
| 21 | import org.onosproject.isis.controller.IsisInterface; |
| 22 | import org.onosproject.isis.controller.IsisInterfaceState; |
| 23 | import org.onosproject.isis.controller.IsisLsdb; |
| 24 | import org.onosproject.isis.controller.IsisMessage; |
| 25 | import org.onosproject.isis.controller.IsisNeighbor; |
| 26 | import org.onosproject.isis.controller.IsisNetworkType; |
| 27 | import org.onosproject.isis.controller.IsisPduType; |
| 28 | import org.onosproject.isis.controller.IsisRouterType; |
| 29 | import org.onosproject.isis.controller.LspWrapper; |
| 30 | import org.onosproject.isis.io.isispacket.IsisHeader; |
| 31 | import org.onosproject.isis.io.isispacket.pdu.Csnp; |
| 32 | import org.onosproject.isis.io.isispacket.pdu.HelloPdu; |
| 33 | import org.onosproject.isis.io.isispacket.pdu.L1L2HelloPdu; |
| 34 | import org.onosproject.isis.io.isispacket.pdu.LsPdu; |
| 35 | import org.onosproject.isis.io.isispacket.pdu.P2PHelloPdu; |
| 36 | import org.onosproject.isis.io.isispacket.pdu.Psnp; |
| 37 | import org.onosproject.isis.io.isispacket.tlv.AdjacencyStateTlv; |
| 38 | import org.onosproject.isis.io.isispacket.tlv.IsisTlv; |
| 39 | import org.onosproject.isis.io.isispacket.tlv.LspEntriesTlv; |
| 40 | import org.onosproject.isis.io.isispacket.tlv.LspEntry; |
| 41 | import org.onosproject.isis.io.isispacket.tlv.TlvHeader; |
| 42 | import org.onosproject.isis.io.isispacket.tlv.TlvType; |
| 43 | import org.onosproject.isis.io.util.IsisConstants; |
| 44 | import org.onosproject.isis.io.util.IsisUtil; |
| 45 | import org.onosproject.isis.io.util.LspGenerator; |
| 46 | import org.slf4j.Logger; |
| 47 | import org.slf4j.LoggerFactory; |
| 48 | |
| 49 | import java.util.ArrayList; |
| 50 | import java.util.Iterator; |
| 51 | import java.util.List; |
| 52 | import java.util.Map; |
| 53 | import java.util.Set; |
| 54 | import java.util.concurrent.ConcurrentHashMap; |
| 55 | import java.util.concurrent.Executors; |
| 56 | import java.util.concurrent.ScheduledExecutorService; |
| 57 | import java.util.concurrent.ScheduledFuture; |
| 58 | import java.util.concurrent.TimeUnit; |
| 59 | |
| 60 | /** |
| 61 | * Representation of an ISIS interface. |
| 62 | */ |
| 63 | public class DefaultIsisInterface implements IsisInterface { |
| 64 | private static final Logger log = LoggerFactory.getLogger(DefaultIsisInterface.class); |
| 65 | boolean flagValue = false; |
| 66 | private int interfaceIndex; |
| 67 | private Ip4Address interfaceIpAddress; |
| 68 | private byte[] networkMask; |
| 69 | private MacAddress interfaceMacAddress; |
| 70 | private String intermediateSystemName; |
| 71 | private String systemId; |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 72 | private String l1LanId = IsisConstants.DEFAULTLANID; |
| 73 | private String l2LanId = IsisConstants.DEFAULTLANID; |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 74 | private int idLength; |
| 75 | private int maxAreaAddresses; |
| 76 | private int reservedPacketCircuitType; |
| 77 | private IsisNetworkType networkType; |
| 78 | private String areaAddress; |
| 79 | private int areaLength; |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 80 | private int holdingTime; |
| 81 | private int priority; |
| 82 | private String circuitId; |
| 83 | private int helloInterval; |
| 84 | private Map<MacAddress, IsisNeighbor> neighborList = new ConcurrentHashMap<>(); |
| 85 | private IsisHelloPduSender isisHelloPduSender = null; |
| 86 | private ScheduledExecutorService exServiceHello = null; |
| 87 | private IsisInterfaceState interfaceState = IsisInterfaceState.DOWN; |
| 88 | private IsisLsdb isisLsdb = null; |
| 89 | private List<Ip4Address> allConfiguredInterfaceIps = null; |
| 90 | private Channel channel; |
| 91 | |
| 92 | /** |
| 93 | * Returns ISIS LSDB instance. |
| 94 | * |
| 95 | * @return ISIS LSDB instance |
| 96 | */ |
| 97 | public IsisLsdb isisLsdb() { |
| 98 | return isisLsdb; |
| 99 | } |
| 100 | |
| 101 | /** |
| 102 | * Sets all configured interface IPs. |
| 103 | * |
| 104 | * @param allConfiguredInterfaces all configured interface IPs |
| 105 | */ |
| 106 | public void setAllConfiguredInterfaceIps(List<Ip4Address> allConfiguredInterfaces) { |
| 107 | allConfiguredInterfaceIps = allConfiguredInterfaces; |
| 108 | } |
| 109 | |
| 110 | /** |
| 111 | * Removes neighbor from the interface neighbor map. |
| 112 | * |
| 113 | * @param isisNeighbor ISIS neighbor instance |
| 114 | */ |
| 115 | public void removeNeighbor(IsisNeighbor isisNeighbor) { |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 116 | log.debug("Neighbor removed - {}", isisNeighbor.neighborMacAddress()); |
| 117 | isisNeighbor.stopHoldingTimeCheck(); |
| 118 | isisNeighbor.stopInactivityTimeCheck(); |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 119 | neighborList.remove(isisNeighbor.neighborMacAddress()); |
| 120 | } |
| 121 | |
| 122 | /** |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 123 | * Removes all the neighbors. |
| 124 | */ |
| 125 | public void removeNeighbors() { |
| 126 | Set<MacAddress> neighbors = neighbors(); |
| 127 | for (MacAddress mac : neighbors) { |
| 128 | removeNeighbor(lookup(mac)); |
| 129 | log.debug("Neighbor removed - {}", mac); |
| 130 | } |
| 131 | neighborList.clear(); |
| 132 | } |
| 133 | |
| 134 | /** |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 135 | * Returns the ISIS neighbor instance if exists. |
| 136 | * |
| 137 | * @param isisNeighborMac mac address of the neighbor router |
| 138 | * @return ISIS neighbor instance if exists else null |
| 139 | */ |
| 140 | public IsisNeighbor lookup(MacAddress isisNeighborMac) { |
| 141 | return neighborList.get(isisNeighborMac); |
| 142 | } |
| 143 | |
| 144 | /** |
| 145 | * Returns the neighbors list. |
| 146 | * |
| 147 | * @return neighbors list |
| 148 | */ |
| 149 | public Set<MacAddress> neighbors() { |
| 150 | return neighborList.keySet(); |
| 151 | } |
| 152 | |
| 153 | /** |
| 154 | * Returns channel instance. |
| 155 | * |
| 156 | * @return channel instance |
| 157 | */ |
| 158 | public Channel channel() { |
| 159 | return channel; |
| 160 | } |
| 161 | |
| 162 | /** |
| 163 | * Returns interface index. |
| 164 | * |
| 165 | * @return interface index |
| 166 | */ |
| 167 | public int interfaceIndex() { |
| 168 | return interfaceIndex; |
| 169 | } |
| 170 | |
| 171 | /** |
| 172 | * Set interface index. |
| 173 | * |
| 174 | * @param interfaceIndex interface index |
| 175 | */ |
| 176 | public void setInterfaceIndex(int interfaceIndex) { |
| 177 | this.interfaceIndex = interfaceIndex; |
| 178 | } |
| 179 | |
| 180 | /** |
| 181 | * Returns the interface IP address. |
| 182 | * |
| 183 | * @return interface IP address |
| 184 | */ |
| 185 | public Ip4Address interfaceIpAddress() { |
| 186 | return interfaceIpAddress; |
| 187 | } |
| 188 | |
| 189 | /** |
| 190 | * Sets the interface IP address. |
| 191 | * |
| 192 | * @param interfaceIpAddress interfaceIpAddress interface IP address |
| 193 | */ |
| 194 | public void setInterfaceIpAddress(Ip4Address interfaceIpAddress) { |
| 195 | this.interfaceIpAddress = interfaceIpAddress; |
| 196 | } |
| 197 | |
| 198 | /** |
| 199 | * Returns the network mask. |
| 200 | * |
| 201 | * @return network mask |
| 202 | */ |
| 203 | public byte[] networkMask() { |
| 204 | return networkMask; |
| 205 | } |
| 206 | |
| 207 | /** |
| 208 | * Sets the network mask. |
| 209 | * |
| 210 | * @param networkMask network mask |
| 211 | */ |
| 212 | public void setNetworkMask(byte[] networkMask) { |
| 213 | this.networkMask = networkMask; |
| 214 | } |
| 215 | |
| 216 | /** |
| 217 | * Returns the interface mac address. |
| 218 | * |
| 219 | * @return interface mac address |
| 220 | */ |
| 221 | public MacAddress getInterfaceMacAddress() { |
| 222 | return interfaceMacAddress; |
| 223 | } |
| 224 | |
| 225 | /** |
| 226 | * Sets the interface mac address. |
| 227 | * |
| 228 | * @param interfaceMacAddress interface mac address |
| 229 | */ |
| 230 | public void setInterfaceMacAddress(MacAddress interfaceMacAddress) { |
| 231 | this.interfaceMacAddress = interfaceMacAddress; |
| 232 | } |
| 233 | |
| 234 | /** |
| 235 | * Returns intermediate system name. |
| 236 | * |
| 237 | * @return intermediate system name |
| 238 | */ |
| 239 | public String intermediateSystemName() { |
| 240 | return intermediateSystemName; |
| 241 | } |
| 242 | |
| 243 | /** |
| 244 | * Sets intermediate system name. |
| 245 | * |
| 246 | * @param intermediateSystemName intermediate system name |
| 247 | */ |
| 248 | public void setIntermediateSystemName(String intermediateSystemName) { |
| 249 | this.intermediateSystemName = intermediateSystemName; |
| 250 | } |
| 251 | |
| 252 | /** |
| 253 | * Returns system ID. |
| 254 | * |
| 255 | * @return system ID |
| 256 | */ |
| 257 | public String systemId() { |
| 258 | return systemId; |
| 259 | } |
| 260 | |
| 261 | /** |
| 262 | * Sets system ID. |
| 263 | * |
| 264 | * @param systemId system ID |
| 265 | */ |
| 266 | public void setSystemId(String systemId) { |
| 267 | this.systemId = systemId; |
| 268 | } |
| 269 | |
| 270 | /** |
| 271 | * Returns LAN ID. |
| 272 | * |
| 273 | * @return LAN ID |
| 274 | */ |
| 275 | public String l1LanId() { |
| 276 | return l1LanId; |
| 277 | } |
| 278 | |
| 279 | /** |
| 280 | * Sets LAN ID. |
| 281 | * |
| 282 | * @param l1LanId LAN ID |
| 283 | */ |
| 284 | public void setL1LanId(String l1LanId) { |
| 285 | this.l1LanId = l1LanId; |
| 286 | } |
| 287 | |
| 288 | /** |
| 289 | * Returns LAN ID. |
| 290 | * |
| 291 | * @return LAN ID |
| 292 | */ |
| 293 | public String l2LanId() { |
| 294 | return l2LanId; |
| 295 | } |
| 296 | |
| 297 | /** |
| 298 | * Sets LAN ID. |
| 299 | * |
| 300 | * @param l2LanId LAN ID |
| 301 | */ |
| 302 | public void setL2LanId(String l2LanId) { |
| 303 | this.l2LanId = l2LanId; |
| 304 | } |
| 305 | |
| 306 | /** |
| 307 | * Returns ID length. |
| 308 | * |
| 309 | * @return ID length |
| 310 | */ |
| 311 | public int getIdLength() { |
| 312 | |
| 313 | return ((idLength == 0) ? 6 : idLength); |
| 314 | } |
| 315 | |
| 316 | /** |
| 317 | * Sets ID length. |
| 318 | * |
| 319 | * @param idLength ID length |
| 320 | */ |
| 321 | public void setIdLength(int idLength) { |
| 322 | this.idLength = idLength; |
| 323 | } |
| 324 | |
| 325 | /** |
| 326 | * Returns max area addresses. |
| 327 | * |
| 328 | * @return max area addresses |
| 329 | */ |
| 330 | public int getMaxAreaAddresses() { |
| 331 | |
| 332 | return maxAreaAddresses; |
| 333 | } |
| 334 | |
| 335 | /** |
| 336 | * Sets area max addresses. |
| 337 | * |
| 338 | * @param maxAreaAddresses max area addresses |
| 339 | */ |
| 340 | public void setMaxAreaAddresses(int maxAreaAddresses) { |
| 341 | this.maxAreaAddresses = maxAreaAddresses; |
| 342 | } |
| 343 | |
| 344 | /** |
| 345 | * Returns reserved packet circuit type. |
| 346 | * |
| 347 | * @return reserved packet circuit type |
| 348 | */ |
| 349 | public int reservedPacketCircuitType() { |
| 350 | return reservedPacketCircuitType; |
| 351 | } |
| 352 | |
| 353 | /** |
| 354 | * Sets reserved packet circuit type. |
| 355 | * |
| 356 | * @param reservedPacketCircuitType reserved packet circuit type |
| 357 | */ |
| 358 | public void setReservedPacketCircuitType(int reservedPacketCircuitType) { |
| 359 | this.reservedPacketCircuitType = reservedPacketCircuitType; |
| 360 | } |
| 361 | |
| 362 | /** |
| 363 | * Returns point to point. |
| 364 | * |
| 365 | * @return point to point |
| 366 | */ |
| 367 | public IsisNetworkType networkType() { |
| 368 | return networkType; |
| 369 | } |
| 370 | |
| 371 | /** |
| 372 | * Sets point to point or broadcast. |
| 373 | * |
| 374 | * @param networkType point to point or broadcast |
| 375 | */ |
| 376 | public void setNetworkType(IsisNetworkType networkType) { |
| 377 | this.networkType = networkType; |
| 378 | } |
| 379 | |
| 380 | /** |
| 381 | * Returns area address. |
| 382 | * |
| 383 | * @return area address |
| 384 | */ |
| 385 | public String areaAddress() { |
| 386 | return areaAddress; |
| 387 | } |
| 388 | |
| 389 | /** |
| 390 | * Sets area address. |
| 391 | * |
| 392 | * @param areaAddress area address |
| 393 | */ |
| 394 | public void setAreaAddress(String areaAddress) { |
| 395 | this.areaAddress = areaAddress; |
| 396 | } |
| 397 | |
| 398 | /** |
| 399 | * Returns area length. |
| 400 | * |
| 401 | * @return area length |
| 402 | */ |
| 403 | public int getAreaLength() { |
| 404 | return areaLength; |
| 405 | } |
| 406 | |
| 407 | /** |
| 408 | * Sets area length. |
| 409 | * |
| 410 | * @param areaLength area length |
| 411 | */ |
| 412 | public void setAreaLength(int areaLength) { |
| 413 | this.areaLength = areaLength; |
| 414 | } |
| 415 | |
| 416 | /** |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 417 | * Returns holding time. |
| 418 | * |
| 419 | * @return holding time |
| 420 | */ |
| 421 | public int holdingTime() { |
| 422 | return holdingTime; |
| 423 | } |
| 424 | |
| 425 | /** |
| 426 | * Sets holding time. |
| 427 | * |
| 428 | * @param holdingTime holding time |
| 429 | */ |
| 430 | public void setHoldingTime(int holdingTime) { |
| 431 | this.holdingTime = holdingTime; |
| 432 | } |
| 433 | |
| 434 | /** |
| 435 | * Returns priority. |
| 436 | * |
| 437 | * @return priority |
| 438 | */ |
| 439 | public int priority() { |
| 440 | return priority; |
| 441 | } |
| 442 | |
| 443 | /** |
| 444 | * Sets priority. |
| 445 | * |
| 446 | * @param priority priority |
| 447 | */ |
| 448 | public void setPriority(int priority) { |
| 449 | this.priority = priority; |
| 450 | } |
| 451 | |
| 452 | /** |
| 453 | * Returns hello interval. |
| 454 | * |
| 455 | * @return hello interval |
| 456 | */ |
| 457 | public int helloInterval() { |
| 458 | return helloInterval; |
| 459 | } |
| 460 | |
| 461 | /** |
| 462 | * Sets hello interval. |
| 463 | * |
| 464 | * @param helloInterval hello interval |
| 465 | */ |
| 466 | public void setHelloInterval(int helloInterval) { |
| 467 | this.helloInterval = helloInterval; |
| 468 | } |
| 469 | |
| 470 | /** |
| 471 | * Returns the interface state. |
| 472 | * |
| 473 | * @return interface state |
| 474 | */ |
| 475 | public IsisInterfaceState interfaceState() { |
| 476 | return interfaceState; |
| 477 | } |
| 478 | |
| 479 | /** |
| 480 | * Sets the interface state. |
| 481 | * |
| 482 | * @param interfaceState the interface state |
| 483 | */ |
| 484 | public void setInterfaceState(IsisInterfaceState interfaceState) { |
| 485 | this.interfaceState = interfaceState; |
| 486 | } |
| 487 | |
| 488 | /** |
| 489 | * Returns the circuit ID. |
| 490 | * |
| 491 | * @return circuit ID |
| 492 | */ |
| 493 | public String circuitId() { |
| 494 | return circuitId; |
| 495 | } |
| 496 | |
| 497 | /** |
| 498 | * Sets the circuit ID. |
| 499 | * |
| 500 | * @param circuitId circuit ID |
| 501 | */ |
| 502 | public void setCircuitId(String circuitId) { |
| 503 | this.circuitId = circuitId; |
| 504 | } |
| 505 | |
| 506 | /** |
| 507 | * Processes received ISIS message. |
| 508 | * When an ISIS message received it is handed over to this method. |
| 509 | * Based on the type of the ISIS message received it will be handed over |
| 510 | * to corresponding message handler methods. |
| 511 | * |
| 512 | * @param isisMessage received ISIS message |
| 513 | * @param isisLsdb ISIS LSDB instance |
| 514 | */ |
| 515 | public void processIsisMessage(IsisMessage isisMessage, IsisLsdb isisLsdb, Channel channel) { |
| 516 | log.debug("IsisInterfaceImpl::processIsisMessage...!!!"); |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 517 | this.channel = channel; |
| 518 | |
| 519 | if (isisMessage.sourceMac().equals(interfaceMacAddress)) { |
| 520 | log.debug("Received our own message {}...!!!", isisMessage.isisPduType()); |
| 521 | return; |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 522 | } |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 523 | |
| 524 | if (isisMessage.isisPduType() == IsisPduType.P2PHELLOPDU && networkType.equals(IsisNetworkType.BROADCAST)) { |
| 525 | return; |
| 526 | } else if ((isisMessage.isisPduType() == IsisPduType.L1HELLOPDU || |
| 527 | isisMessage.isisPduType() == IsisPduType.L2HELLOPDU) |
| 528 | && networkType.equals(IsisNetworkType.P2P)) { |
| 529 | return; |
| 530 | } |
| 531 | |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 532 | if (this.isisLsdb == null) { |
| 533 | this.isisLsdb = isisLsdb; |
| 534 | } |
| 535 | |
| 536 | switch (isisMessage.isisPduType()) { |
| 537 | case L1HELLOPDU: |
| 538 | case L2HELLOPDU: |
| 539 | processL1L2HelloPduMessage(isisMessage, channel); |
| 540 | break; |
| 541 | case P2PHELLOPDU: |
| 542 | processP2pHelloPduMessage(isisMessage, channel); |
| 543 | break; |
| 544 | case L1LSPDU: |
| 545 | case L2LSPDU: |
| 546 | processLsPduMessage(isisMessage, channel); |
| 547 | break; |
| 548 | case L1CSNP: |
| 549 | case L2CSNP: |
| 550 | processCsnPduMessage(isisMessage, channel); |
| 551 | break; |
| 552 | case L1PSNP: |
| 553 | case L2PSNP: |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 554 | processPsnPduMessage(isisMessage, channel); |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 555 | break; |
| 556 | default: |
| 557 | log.debug("Unknown packet to process...!!!"); |
| 558 | break; |
| 559 | } |
| 560 | } |
| 561 | |
| 562 | /** |
| 563 | * Validates the received message. |
| 564 | * |
| 565 | * @param helloPdu ISIS message instance |
| 566 | * @return true if valid ISIS message else false |
| 567 | */ |
| 568 | public boolean validateHelloMessage(HelloPdu helloPdu) { |
| 569 | boolean isValid = false; |
| 570 | |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 571 | if ((helloPdu.circuitType() == IsisRouterType.L1.value() && |
| 572 | reservedPacketCircuitType == IsisRouterType.L2.value()) || |
| 573 | (helloPdu.circuitType() == IsisRouterType.L2.value() && |
| 574 | reservedPacketCircuitType == IsisRouterType.L1.value())) { |
| 575 | return false; |
| 576 | } |
| 577 | |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 578 | //Local InterfaceAddress TLV and compare with the IP Interface address and check if they are in same subnet |
| 579 | List<Ip4Address> interfaceIpAddresses = helloPdu.interfaceIpAddresses(); |
| 580 | Ip4Address neighborIp = (helloPdu.interfaceIpAddresses() != null) ? |
| 581 | interfaceIpAddresses.get(0) : Ip4Address.valueOf("0.0.0.0"); |
| 582 | if (!IsisUtil.sameNetwork(interfaceIpAddress, neighborIp, networkMask)) { |
| 583 | return false; |
| 584 | } |
| 585 | |
| 586 | //Verify if it's in same area, Areas which the router belongs to |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 587 | if (helloPdu.circuitType() == IsisRouterType.L1.value()) { |
| 588 | List<String> areas = helloPdu.areaAddress(); |
| 589 | for (String area : areas) { |
| 590 | if (areaAddress.equals(area)) { |
| 591 | isValid = true; |
| 592 | } |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 593 | } |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 594 | } else if (helloPdu.circuitType() == IsisRouterType.L2.value() || |
| 595 | helloPdu.circuitType() == IsisRouterType.L1L2.value()) { |
| 596 | isValid = true; |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 597 | } |
| 598 | |
| 599 | return isValid; |
| 600 | } |
| 601 | |
| 602 | /** |
| 603 | * Checks neighbor presents in the list or not. |
| 604 | * |
| 605 | * @param neighborMac neighbor MAc address |
| 606 | * @return true if neighbor exist else false |
| 607 | */ |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 608 | |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 609 | private boolean isNeighborInList(MacAddress neighborMac) { |
| 610 | return neighborList.containsKey(neighborMac); |
| 611 | } |
| 612 | |
| 613 | /** |
| 614 | * Adds neighbor in the list. |
| 615 | * |
| 616 | * @param neighbor neighbor MAC address |
| 617 | * @return true if neighbor exist else false |
| 618 | */ |
| 619 | private void addNeighbouringRouter(IsisNeighbor neighbor) { |
| 620 | neighborList.put(neighbor.neighborMacAddress(), neighbor); |
| 621 | } |
| 622 | |
| 623 | /** |
| 624 | * Returns neighbor presents in the list. |
| 625 | * |
| 626 | * @param neighborMac neighbor MAc address |
| 627 | * @return neighbor instance |
| 628 | */ |
| 629 | private IsisNeighbor neighbouringRouter(MacAddress neighborMac) { |
| 630 | return neighborList.get(neighborMac); |
| 631 | } |
| 632 | |
| 633 | /** |
| 634 | * Processes the L1 or L2 hello message. |
| 635 | * |
| 636 | * @param isisMessage hello message instance |
| 637 | * @param channel channel instance |
| 638 | */ |
| 639 | public void processL1L2HelloPduMessage(IsisMessage isisMessage, Channel channel) { |
| 640 | log.debug("Enters processL1L2HelloPduMessage ...!!!"); |
| 641 | log.debug("IsisInterfaceImpl::processHelloMessage...!!!"); |
| 642 | |
| 643 | L1L2HelloPdu helloPacket = (L1L2HelloPdu) isisMessage; |
| 644 | log.debug("IsisInterfaceImpl::processHelloMessage::Interface Type {} ISISInterfaceState {} ", |
| 645 | networkType, interfaceState); |
| 646 | |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 647 | //If validate the area, network and max address |
| 648 | if (!validateHelloMessage(helloPacket)) { |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 649 | return; |
| 650 | } |
| 651 | |
| 652 | //Get the neighbor |
| 653 | IsisNeighbor neighbor = neighbouringRouter(isisMessage.sourceMac()); |
| 654 | //Neighbor is not in list |
| 655 | if (!isNeighborInList(isisMessage.sourceMac())) { |
| 656 | neighbor = new DefaultIsisNeighbor(helloPacket, this); |
| 657 | addNeighbouringRouter(neighbor); |
| 658 | } |
| 659 | |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 660 | neighbor.setHoldingTime(helloPacket.holdingTime()); |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 661 | neighbor.stopInactivityTimeCheck(); |
| 662 | neighbor.startInactivityTimeCheck(); |
| 663 | |
| 664 | //Assign the DIS |
| 665 | String lanId = helloPacket.lanId(); |
| 666 | |
| 667 | if (IsisPduType.L1HELLOPDU == helloPacket.isisPduType()) { |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 668 | buildUpdateAndSendSelfGeneratedLspIfDisChange(l1LanId, lanId, channel, |
| 669 | IsisRouterType.get(helloPacket.circuitType())); |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 670 | l1LanId = lanId; |
| 671 | neighbor.setL1LanId(lanId); |
| 672 | //if a change in lanid |
| 673 | } else if (IsisPduType.L2HELLOPDU == helloPacket.isisPduType()) { |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 674 | buildUpdateAndSendSelfGeneratedLspIfDisChange(l2LanId, lanId, channel, |
| 675 | IsisRouterType.get(helloPacket.circuitType())); |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 676 | l2LanId = lanId; |
| 677 | neighbor.setL2LanId(lanId); |
| 678 | } |
| 679 | |
| 680 | //Check in neighbors list our MAC address present |
| 681 | List<MacAddress> neighbors = helloPacket.neighborList(); |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 682 | if (neighbors != null) { |
| 683 | for (MacAddress macAddress : neighbors) { |
| 684 | if (interfaceMacAddress.equals(macAddress)) { |
| 685 | neighbor.setNeighborState(IsisInterfaceState.UP); |
| 686 | //Build Self LSP add in LSDB and sent it. |
| 687 | buildStoreAndSendSelfGeneratedLspIfNotExistInDb(channel, |
| 688 | IsisRouterType.get(helloPacket.circuitType())); |
| 689 | break; |
| 690 | } |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 691 | } |
| 692 | } |
| 693 | } |
| 694 | |
| 695 | /** |
| 696 | * Builds and store and send self generated LSP. |
| 697 | * |
| 698 | * @param channel netty channel instance |
| 699 | */ |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 700 | private void buildStoreAndSendSelfGeneratedLspIfNotExistInDb(Channel channel, IsisRouterType neighborRouterType) { |
| 701 | this.channel = channel; |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 702 | //Check our LSP is present in DB. else create a self LSP and store it and sent it |
| 703 | String lspKey = isisLsdb.lspKey(systemId); |
| 704 | LspWrapper wrapper = null; |
| 705 | if (reservedPacketCircuitType == IsisRouterType.L1.value()) { |
| 706 | wrapper = isisLsdb.findLsp(IsisPduType.L1LSPDU, lspKey); |
| 707 | if (wrapper == null) { |
| 708 | LsPdu lsp = new LspGenerator().getLsp(this, lspKey, IsisPduType.L1LSPDU, allConfiguredInterfaceIps); |
| 709 | isisLsdb.addLsp(lsp, true, this); |
| 710 | sendLsp(lsp, channel); |
| 711 | } |
| 712 | } else if (reservedPacketCircuitType == IsisRouterType.L2.value()) { |
| 713 | wrapper = isisLsdb.findLsp(IsisPduType.L2LSPDU, lspKey); |
| 714 | if (wrapper == null) { |
| 715 | LsPdu lsp = new LspGenerator().getLsp(this, lspKey, IsisPduType.L2LSPDU, allConfiguredInterfaceIps); |
| 716 | isisLsdb.addLsp(lsp, true, this); |
| 717 | sendLsp(lsp, channel); |
| 718 | } |
| 719 | } else if (reservedPacketCircuitType == IsisRouterType.L1L2.value()) { |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 720 | if ((neighborRouterType == IsisRouterType.L1 || neighborRouterType == IsisRouterType.L1L2)) { |
| 721 | |
| 722 | wrapper = isisLsdb.findLsp(IsisPduType.L1LSPDU, lspKey); |
| 723 | if (wrapper == null) { |
| 724 | LsPdu lsp = new LspGenerator().getLsp(this, lspKey, IsisPduType.L1LSPDU, |
| 725 | allConfiguredInterfaceIps); |
| 726 | isisLsdb.addLsp(lsp, true, this); |
| 727 | sendLsp(lsp, channel); |
| 728 | } |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 729 | } |
| 730 | |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 731 | if ((neighborRouterType == IsisRouterType.L2 || neighborRouterType == IsisRouterType.L1L2)) { |
| 732 | wrapper = isisLsdb.findLsp(IsisPduType.L2LSPDU, lspKey); |
| 733 | if (wrapper == null) { |
| 734 | LsPdu lsp = new LspGenerator().getLsp(this, lspKey, IsisPduType.L2LSPDU, |
| 735 | allConfiguredInterfaceIps); |
| 736 | isisLsdb.addLsp(lsp, true, this); |
| 737 | sendLsp(lsp, channel); |
| 738 | } |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 739 | } |
| 740 | } |
| 741 | } |
| 742 | |
| 743 | /** |
| 744 | * Builds and update in DB and send self generated LSP. |
| 745 | * |
| 746 | * @param previousLanId previous DIS ID |
| 747 | * @param latestLanId latest DIS ID |
| 748 | * @param channel netty channel instance |
| 749 | */ |
| 750 | private void buildUpdateAndSendSelfGeneratedLspIfDisChange(String previousLanId, |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 751 | String latestLanId, Channel channel, |
| 752 | IsisRouterType neighborRouterType) { |
| 753 | this.channel = channel; |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 754 | //If DIS change then build and sent LSP |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 755 | if (!previousLanId.equals(latestLanId)) { |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 756 | //Create a self LSP and Update it in DB and sent it |
| 757 | String lspKey = isisLsdb.lspKey(systemId); |
| 758 | if (reservedPacketCircuitType == IsisRouterType.L1.value()) { |
| 759 | LsPdu lsp = new LspGenerator().getLsp(this, lspKey, IsisPduType.L1LSPDU, allConfiguredInterfaceIps); |
| 760 | isisLsdb.addLsp(lsp, true, this); |
| 761 | sendLsp(lsp, channel); |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 762 | } else if (reservedPacketCircuitType == IsisRouterType.L2.value() && |
| 763 | (neighborRouterType == IsisRouterType.L2 || neighborRouterType == IsisRouterType.L1L2)) { |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 764 | LsPdu lsp = new LspGenerator().getLsp(this, lspKey, IsisPduType.L2LSPDU, allConfiguredInterfaceIps); |
| 765 | isisLsdb.addLsp(lsp, true, this); |
| 766 | sendLsp(lsp, channel); |
| 767 | } else if (reservedPacketCircuitType == IsisRouterType.L1L2.value()) { |
| 768 | //L1 LSPDU |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 769 | if (neighborRouterType == IsisRouterType.L1 || neighborRouterType == IsisRouterType.L1L2) { |
| 770 | LsPdu lsp = new LspGenerator().getLsp(this, lspKey, IsisPduType.L1LSPDU, allConfiguredInterfaceIps); |
| 771 | isisLsdb.addLsp(lsp, true, this); |
| 772 | sendLsp(lsp, channel); |
| 773 | } |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 774 | //L1 LSPDU |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 775 | if (neighborRouterType == IsisRouterType.L2 || neighborRouterType == IsisRouterType.L1L2) { |
| 776 | LsPdu lsp = new LspGenerator().getLsp(this, lspKey, IsisPduType.L2LSPDU, allConfiguredInterfaceIps); |
| 777 | isisLsdb.addLsp(lsp, true, this); |
| 778 | sendLsp(lsp, channel); |
| 779 | } |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 780 | } |
| 781 | } |
| 782 | |
| 783 | } |
| 784 | |
| 785 | /** |
| 786 | * Sends LS PDU message to channel. |
| 787 | * |
| 788 | * @param lsp LS PDU message instance |
| 789 | * @param channel channel instance |
| 790 | */ |
| 791 | private void sendLsp(LsPdu lsp, Channel channel) { |
| 792 | byte[] lspBytes = lsp.asBytes(); |
| 793 | lspBytes = IsisUtil.addLengthAndMarkItInReserved(lspBytes, IsisConstants.LENGTHPOSITION, |
| 794 | IsisConstants.LENGTHPOSITION + 1, |
| 795 | IsisConstants.RESERVEDPOSITION); |
| 796 | lspBytes = IsisUtil.addChecksum(lspBytes, IsisConstants.CHECKSUMPOSITION, |
| 797 | IsisConstants.CHECKSUMPOSITION + 1); |
| 798 | //write to the channel |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 799 | if (channel != null && channel.isConnected() && channel.isOpen()) { |
| 800 | channel.write(IsisUtil.framePacket(lspBytes, interfaceIndex)); |
| 801 | } |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 802 | } |
| 803 | |
| 804 | /** |
| 805 | * Processes P2P hello message. |
| 806 | * |
| 807 | * @param isisMessage hello message instance |
| 808 | * @param channel channel instance |
| 809 | */ |
| 810 | public void processP2pHelloPduMessage(IsisMessage isisMessage, Channel channel) { |
| 811 | log.debug("Enters processP2pHelloPduMessage ...!!!"); |
| 812 | P2PHelloPdu helloPacket = (P2PHelloPdu) isisMessage; |
| 813 | |
| 814 | log.debug("IsisInterfaceImpl::processHelloMessage::Interface Type {} OSPFInterfaceState {} ", |
| 815 | networkType, interfaceState); |
| 816 | |
| 817 | //validate the area, network and max address |
| 818 | if (!validateHelloMessage(helloPacket)) { |
| 819 | return; |
| 820 | } |
| 821 | |
| 822 | IsisNeighbor neighbor = null; |
| 823 | List<IsisTlv> tlvs = ((P2PHelloPdu) isisMessage).tlvs(); |
| 824 | AdjacencyStateTlv stateTlv = null; |
| 825 | for (IsisTlv tlv : tlvs) { |
| 826 | if (tlv instanceof AdjacencyStateTlv) { |
| 827 | stateTlv = (AdjacencyStateTlv) tlv; |
| 828 | break; |
| 829 | } |
| 830 | } |
| 831 | |
| 832 | if (stateTlv == null) { |
| 833 | neighbor = neighbouringRouter(isisMessage.sourceMac()); |
| 834 | if (neighbor == null) { |
| 835 | neighbor = new DefaultIsisNeighbor(helloPacket, this); |
| 836 | addNeighbouringRouter(neighbor); |
| 837 | } |
| 838 | neighbor.setNeighborState(IsisInterfaceState.DOWN); |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 839 | buildStoreAndSendSelfGeneratedLspIfNotExistInDb(channel, IsisRouterType.get(helloPacket.circuitType())); |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 840 | } else if (stateTlv.adjacencyType() == IsisInterfaceState.DOWN.value()) { |
| 841 | neighbor = neighbouringRouter(isisMessage.sourceMac()); |
| 842 | if (neighbor == null) { |
| 843 | neighbor = new DefaultIsisNeighbor(helloPacket, this); |
| 844 | addNeighbouringRouter(neighbor); |
| 845 | } |
| 846 | neighbor.setLocalExtendedCircuitId(stateTlv.localCircuitId()); |
| 847 | } else if (stateTlv.adjacencyType() == IsisInterfaceState.INITIAL.value()) { |
| 848 | //Neighbor already present in the list |
| 849 | neighbor = neighbouringRouter(isisMessage.sourceMac()); |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 850 | if (neighbor == null) { |
| 851 | neighbor = new DefaultIsisNeighbor(helloPacket, this); |
| 852 | addNeighbouringRouter(neighbor); |
| 853 | } |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 854 | neighbor.setNeighborState(IsisInterfaceState.INITIAL); |
| 855 | neighbor.setLocalExtendedCircuitId(stateTlv.localCircuitId()); |
| 856 | //interfaceState = IsisInterfaceState.UP; |
| 857 | } else if (stateTlv.adjacencyType() == IsisInterfaceState.UP.value()) { |
| 858 | //Build Self LSP add in LSDB and sent it. |
| 859 | neighbor = neighbouringRouter(isisMessage.sourceMac()); |
| 860 | neighbor.setNeighborState(IsisInterfaceState.UP); |
| 861 | neighbor.setLocalExtendedCircuitId(stateTlv.localCircuitId()); |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 862 | buildStoreAndSendSelfGeneratedLspIfNotExistInDb(channel, IsisRouterType.get(helloPacket.circuitType())); |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 863 | } |
| 864 | |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 865 | neighbor.setHoldingTime(helloPacket.holdingTime()); |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 866 | neighbor.stopInactivityTimeCheck(); |
| 867 | neighbor.startInactivityTimeCheck(); |
| 868 | } |
| 869 | |
| 870 | /** |
| 871 | * Processes LS PDU message. |
| 872 | * |
| 873 | * @param isisMessage LS pdu message instance |
| 874 | * @param channel channel instance |
| 875 | */ |
| 876 | public void processLsPduMessage(IsisMessage isisMessage, Channel channel) { |
| 877 | log.debug("Enters processLsPduMessage ...!!!"); |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 878 | IsisNeighbor neighbor = neighbouringRouter(isisMessage.sourceMac()); |
| 879 | if (networkType == IsisNetworkType.BROADCAST && neighbor == null) { |
| 880 | return; |
| 881 | } |
| 882 | |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 883 | LsPdu lsPdu = (LsPdu) isisMessage; |
| 884 | LspWrapper wrapper = isisLsdb.findLsp(lsPdu.isisPduType(), lsPdu.lspId()); |
| 885 | if (wrapper == null || isisLsdb.isNewerOrSameLsp(lsPdu, wrapper.lsPdu()).equalsIgnoreCase("latest")) { |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 886 | if (wrapper != null) { // verify if the LSA - is your own LSA - get system ID and compare LSP |
| 887 | String lspKey = isisLsdb.lspKey(systemId); |
| 888 | if (lsPdu.lspId().equals(lspKey)) { |
| 889 | lsPdu.setSequenceNumber(lsPdu.sequenceNumber() + 1); |
| 890 | if (lsPdu.pduType() == IsisPduType.L1LSPDU.value()) { |
| 891 | // setting the ls sequence number |
| 892 | isisLsdb.setL1LspSeqNo(lsPdu.sequenceNumber()); |
| 893 | } else if (lsPdu.pduType() == IsisPduType.L2LSPDU.value()) { |
| 894 | // setting the ls sequence number |
| 895 | isisLsdb.setL2LspSeqNo(lsPdu.sequenceNumber()); |
| 896 | } |
| 897 | isisLsdb.addLsp(lsPdu, true, this); |
| 898 | sendLsp(lsPdu, channel); |
| 899 | } else { |
| 900 | isisLsdb.addLsp(lsPdu, false, this); |
| 901 | } |
| 902 | |
| 903 | |
| 904 | } else { |
| 905 | //not exist in the database or latest, then add it in database |
| 906 | isisLsdb.addLsp(lsPdu, false, this); |
| 907 | } |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 908 | } |
| 909 | |
| 910 | //If network type is P2P, acknowledge with a PSNP |
| 911 | if (networkType() == IsisNetworkType.P2P) { |
| 912 | IsisPduType psnpType = null; |
| 913 | if (IsisPduType.get(lsPdu.pduType()) == IsisPduType.L1LSPDU) { |
| 914 | psnpType = IsisPduType.L1PSNP; |
| 915 | } else if (IsisPduType.get(lsPdu.pduType()) == IsisPduType.L2LSPDU) { |
| 916 | psnpType = IsisPduType.L2PSNP; |
| 917 | } |
| 918 | IsisHeader isisHeader = new LspGenerator().getHeader(psnpType); |
| 919 | Psnp psnp = new Psnp(isisHeader); |
| 920 | psnp.setSourceId(lspKeyP2P(this.systemId)); |
| 921 | TlvHeader tlvHeader = new TlvHeader(); |
| 922 | tlvHeader.setTlvType(TlvType.LSPENTRY.value()); |
| 923 | tlvHeader.setTlvLength(0); |
| 924 | LspEntriesTlv lspEntriesTlv = new LspEntriesTlv(tlvHeader); |
| 925 | LspEntry lspEntry = new LspEntry(); |
| 926 | lspEntry.setLspChecksum(lsPdu.checkSum()); |
| 927 | lspEntry.setLspId(lsPdu.lspId()); |
| 928 | lspEntry.setLspSequenceNumber(lsPdu.sequenceNumber()); |
| 929 | lspEntry.setRemainingTime(lsPdu.remainingLifeTime()); |
| 930 | lspEntriesTlv.addLspEntry(lspEntry); |
| 931 | psnp.addTlv(lspEntriesTlv); |
| 932 | |
| 933 | //write it to channel buffer. |
| 934 | byte[] psnpBytes = psnp.asBytes(); |
| 935 | psnpBytes = IsisUtil.addLengthAndMarkItInReserved(psnpBytes, IsisConstants.LENGTHPOSITION, |
| 936 | IsisConstants.LENGTHPOSITION + 1, |
| 937 | IsisConstants.RESERVEDPOSITION); |
| 938 | flagValue = false; |
| 939 | //write to the channel |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 940 | if (channel != null && channel.isConnected() && channel.isOpen()) { |
| 941 | channel.write(IsisUtil.framePacket(psnpBytes, interfaceIndex)); |
| 942 | } |
| 943 | } |
| 944 | } |
| 945 | |
| 946 | /** |
| 947 | * Processes PSN PDU message. |
| 948 | * Checks for self originated LSP entries in PSNP message and sends the missing LSP. |
| 949 | * |
| 950 | * @param isisMessage PSN PDU message instance |
| 951 | * @param channel channel instance |
| 952 | */ |
| 953 | public void processPsnPduMessage(IsisMessage isisMessage, Channel channel) { |
| 954 | log.debug("Enters processPsnPduMessage ...!!!"); |
| 955 | //If adjacency not formed don't process. |
| 956 | IsisNeighbor neighbor = neighbouringRouter(isisMessage.sourceMac()); |
| 957 | if (networkType == IsisNetworkType.BROADCAST && neighbor == null) { |
| 958 | return; |
| 959 | } |
| 960 | |
| 961 | Psnp psnPacket = (Psnp) isisMessage; |
| 962 | List<IsisTlv> isisTlvs = psnPacket.getAllTlv(); |
| 963 | Iterator iterator = isisTlvs.iterator(); |
| 964 | while (iterator.hasNext()) { |
| 965 | IsisTlv isisTlv = (IsisTlv) iterator.next(); |
| 966 | if (isisTlv instanceof LspEntriesTlv) { |
| 967 | LspEntriesTlv lspEntriesTlv = (LspEntriesTlv) isisTlv; |
| 968 | List<LspEntry> lspEntryList = lspEntriesTlv.lspEntry(); |
| 969 | Iterator lspEntryListIterator = lspEntryList.iterator(); |
| 970 | while (lspEntryListIterator.hasNext()) { |
| 971 | LspEntry lspEntry = (LspEntry) lspEntryListIterator.next(); |
| 972 | String lspKey = lspEntry.lspId(); |
| 973 | LspWrapper lspWrapper = isisLsdb.findLsp(psnPacket.isisPduType(), lspKey); |
| 974 | if (lspWrapper != null) { |
| 975 | if (lspWrapper.isSelfOriginated()) { |
| 976 | //Sent the LSP |
| 977 | sendLsp((LsPdu) lspWrapper.lsPdu(), channel); |
| 978 | } |
| 979 | } |
| 980 | } |
| 981 | } |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 982 | } |
| 983 | } |
| 984 | |
| 985 | /** |
| 986 | * Processes CSN PDU message. |
| 987 | * |
| 988 | * @param isisMessage CSN PDU message instance |
| 989 | * @param channel channel instance |
| 990 | */ |
| 991 | public void processCsnPduMessage(IsisMessage isisMessage, Channel channel) { |
| 992 | log.debug("Enters processCsnPduMessage ...!!!"); |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 993 | IsisNeighbor neighbor = neighbouringRouter(isisMessage.sourceMac()); |
| 994 | if (networkType == IsisNetworkType.BROADCAST && neighbor == null) { |
| 995 | return; |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 996 | } |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 997 | |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 998 | Csnp csnPacket = (Csnp) isisMessage; |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 999 | IsisPduType psnPduType = (IsisPduType.L2CSNP.equals(csnPacket.isisPduType())) ? |
| 1000 | IsisPduType.L2PSNP : IsisPduType.L1PSNP; |
| 1001 | IsisPduType lsPduType = (IsisPduType.L2CSNP.equals(csnPacket.isisPduType())) ? |
| 1002 | IsisPduType.L2LSPDU : IsisPduType.L1LSPDU; |
| 1003 | |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 1004 | List<LspEntry> lspEntryRequestList = new ArrayList<>(); |
| 1005 | boolean selfOriginatedFound = false; |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 1006 | List<IsisTlv> isisTlvs = csnPacket.getAllTlv(); |
| 1007 | Iterator iterator = isisTlvs.iterator(); |
| 1008 | while (iterator.hasNext()) { |
| 1009 | IsisTlv isisTlv = (IsisTlv) iterator.next(); |
| 1010 | if (isisTlv instanceof LspEntriesTlv) { |
| 1011 | LspEntriesTlv lspEntriesTlv = (LspEntriesTlv) isisTlv; |
| 1012 | List<LspEntry> lspEntryList = lspEntriesTlv.lspEntry(); |
| 1013 | Iterator lspEntryListIterator = lspEntryList.iterator(); |
| 1014 | while (lspEntryListIterator.hasNext()) { |
| 1015 | LspEntry lspEntry = (LspEntry) lspEntryListIterator.next(); |
| 1016 | String lspKey = lspEntry.lspId(); |
| 1017 | LspWrapper lspWrapper = isisLsdb.findLsp(lsPduType, lspKey); |
| 1018 | if (lspWrapper != null) { |
| 1019 | LsPdu lsPdu = (LsPdu) lspWrapper.lsPdu(); |
| 1020 | if (lspWrapper.isSelfOriginated()) { |
| 1021 | selfOriginatedFound = true; |
| 1022 | if (lspEntry.lspSequenceNumber() < lsPdu.sequenceNumber()) { |
| 1023 | sendLsp(lsPdu, channel); |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 1024 | } |
| 1025 | } else { |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 1026 | if (lsPdu.sequenceNumber() < lspEntry.lspSequenceNumber()) { |
| 1027 | lspEntryRequestList.add(lspEntry); |
| 1028 | flagValue = true; |
| 1029 | } |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 1030 | } |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 1031 | } else { |
| 1032 | lspEntryRequestList.add(lspEntry); |
| 1033 | flagValue = true; |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 1034 | } |
| 1035 | } |
| 1036 | } |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 1037 | } |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 1038 | if (flagValue) { |
| 1039 | sendPsnPduMessage(lspEntryRequestList, psnPduType, channel); |
| 1040 | lspEntryRequestList.clear(); |
| 1041 | } |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 1042 | |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 1043 | if (!selfOriginatedFound) { |
| 1044 | String lspKey = isisLsdb.lspKey(systemId); |
| 1045 | LspWrapper wrapper = isisLsdb.findLsp(lsPduType, lspKey); |
| 1046 | if (wrapper != null) { |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 1047 | sendLsp((LsPdu) wrapper.lsPdu(), channel); |
| 1048 | } |
| 1049 | } |
| 1050 | } |
| 1051 | |
| 1052 | /** |
| 1053 | * Sends the partial sequence number PDU. |
| 1054 | * |
| 1055 | * @param lspEntryRequestList list of lsp entry request |
| 1056 | * @param isisPduType intermediate system PDU type |
| 1057 | * @param channel netty channel instance |
| 1058 | */ |
| 1059 | private void sendPsnPduMessage(List<LspEntry> lspEntryRequestList, IsisPduType isisPduType, Channel channel) { |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 1060 | IsisHeader isisHeader = new LspGenerator().getHeader(isisPduType); |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 1061 | Psnp psnp = new Psnp(isisHeader); |
| 1062 | psnp.setSourceId(lspKeyP2P(this.systemId)); |
| 1063 | TlvHeader tlvHeader = new TlvHeader(); |
| 1064 | tlvHeader.setTlvType(TlvType.LSPENTRY.value()); |
| 1065 | tlvHeader.setTlvLength(0); |
| 1066 | LspEntriesTlv lspEntriesTlv = new LspEntriesTlv(tlvHeader); |
| 1067 | for (LspEntry lspEntry : lspEntryRequestList) { |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 1068 | lspEntry.setLspChecksum(0); |
| 1069 | lspEntry.setLspSequenceNumber(0); |
| 1070 | lspEntry.setRemainingTime(0); |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 1071 | lspEntriesTlv.addLspEntry(lspEntry); |
| 1072 | } |
| 1073 | psnp.addTlv(lspEntriesTlv); |
| 1074 | //write it to channel buffer. |
| 1075 | byte[] psnpBytes = psnp.asBytes(); |
| 1076 | psnpBytes = IsisUtil.addLengthAndMarkItInReserved(psnpBytes, IsisConstants.LENGTHPOSITION, |
| 1077 | IsisConstants.LENGTHPOSITION + 1, |
| 1078 | IsisConstants.RESERVEDPOSITION); |
| 1079 | flagValue = false; |
| 1080 | //write to the channel |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 1081 | if (channel != null && channel.isConnected() && channel.isOpen()) { |
| 1082 | channel.write(IsisUtil.framePacket(psnpBytes, interfaceIndex)); |
| 1083 | } |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 1084 | } |
| 1085 | |
| 1086 | /** |
| 1087 | * Gets the LSP key. |
| 1088 | * |
| 1089 | * @param systemId system ID |
| 1090 | * @return key |
| 1091 | */ |
| 1092 | public String lspKeyP2P(String systemId) { |
| 1093 | StringBuilder lspKey = new StringBuilder(); |
| 1094 | lspKey.append(systemId); |
| 1095 | lspKey.append(".00"); |
| 1096 | return lspKey.toString(); |
| 1097 | } |
| 1098 | |
| 1099 | /** |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 1100 | * Starts the hello timer which sends hello packet every configured seconds. |
| 1101 | * |
| 1102 | * @param channel netty channel instance |
| 1103 | */ |
| 1104 | public void startHelloSender(Channel channel) { |
| 1105 | log.debug("IsisInterfaceImpl::startHelloSender"); |
| 1106 | |
| 1107 | isisHelloPduSender = new IsisHelloPduSender(channel, this); |
| 1108 | exServiceHello = Executors.newSingleThreadScheduledExecutor(); |
| 1109 | final ScheduledFuture<?> helloHandle = |
| 1110 | exServiceHello.scheduleAtFixedRate(isisHelloPduSender, 0, |
| 1111 | helloInterval, TimeUnit.SECONDS); |
| 1112 | } |
sunish vk | 4b5ce00 | 2016-05-09 20:18:35 +0530 | [diff] [blame] | 1113 | |
| 1114 | /** |
| 1115 | * Stops the hello timer which sends hello packet every configured seconds. |
| 1116 | */ |
| 1117 | public void stopHelloSender() { |
| 1118 | log.debug("IsisInterfaceImpl::stopHelloSender"); |
| 1119 | exServiceHello.shutdown(); |
| 1120 | } |
tejeshwer degala | 3fe1ed5 | 2016-04-22 17:04:01 +0530 | [diff] [blame] | 1121 | } |