Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016-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 | |
| 17 | package org.onosproject.segmentrouting.pwaas; |
| 18 | |
| 19 | import com.google.common.collect.Iterables; |
| 20 | import com.google.common.collect.Lists; |
| 21 | import org.apache.commons.lang3.RandomUtils; |
| 22 | import org.onlab.packet.Ethernet; |
| 23 | import org.onlab.packet.MacAddress; |
| 24 | import org.onlab.packet.MplsLabel; |
| 25 | import org.onlab.packet.VlanId; |
| 26 | import org.onlab.util.KryoNamespace; |
| 27 | import org.onosproject.net.ConnectPoint; |
| 28 | import org.onosproject.net.DefaultLink; |
| 29 | import org.onosproject.net.DeviceId; |
| 30 | import org.onosproject.net.Link; |
| 31 | import org.onosproject.net.Path; |
| 32 | import org.onosproject.net.PortNumber; |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 33 | import org.onosproject.net.flow.DefaultTrafficSelector; |
| 34 | import org.onosproject.net.flow.DefaultTrafficTreatment; |
| 35 | import org.onosproject.net.flow.TrafficSelector; |
| 36 | import org.onosproject.net.flow.TrafficTreatment; |
| 37 | import org.onosproject.net.flow.criteria.Criteria; |
| 38 | import org.onosproject.net.flowobjective.DefaultFilteringObjective; |
| 39 | import org.onosproject.net.flowobjective.DefaultForwardingObjective; |
| 40 | import org.onosproject.net.flowobjective.DefaultNextObjective; |
| 41 | import org.onosproject.net.flowobjective.DefaultObjectiveContext; |
| 42 | import org.onosproject.net.flowobjective.FilteringObjective; |
| 43 | import org.onosproject.net.flowobjective.ForwardingObjective; |
| 44 | import org.onosproject.net.flowobjective.NextObjective; |
| 45 | import org.onosproject.net.flowobjective.Objective; |
| 46 | import org.onosproject.net.flowobjective.ObjectiveContext; |
| 47 | import org.onosproject.net.flowobjective.ObjectiveError; |
| 48 | import org.onosproject.segmentrouting.SegmentRoutingManager; |
| 49 | import org.onosproject.segmentrouting.SegmentRoutingService; |
| 50 | import org.onosproject.segmentrouting.config.DeviceConfigNotFoundException; |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 51 | import org.onosproject.store.serializers.KryoNamespaces; |
| 52 | import org.onosproject.store.service.ConsistentMap; |
| 53 | import org.onosproject.store.service.DistributedSet; |
| 54 | import org.onosproject.store.service.Serializer; |
| 55 | import org.onosproject.store.service.Versioned; |
| 56 | import org.slf4j.Logger; |
| 57 | import org.slf4j.LoggerFactory; |
| 58 | |
| 59 | import java.util.ArrayList; |
| 60 | import java.util.List; |
| 61 | import java.util.Set; |
| 62 | import java.util.concurrent.CompletableFuture; |
| 63 | import java.util.stream.Collectors; |
| 64 | |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 65 | import static org.onosproject.net.flowobjective.ForwardingObjective.Flag.VERSATILE; |
| 66 | import static org.onosproject.segmentrouting.pwaas.L2TunnelHandler.Pipeline.INITIATION; |
| 67 | import static org.onosproject.segmentrouting.pwaas.L2TunnelHandler.Pipeline.TERMINATION; |
| 68 | import static org.onosproject.segmentrouting.pwaas.L2TunnelHandler.Result.*; |
| 69 | import static org.onosproject.segmentrouting.pwaas.L2TunnelHandler.Direction.FWD; |
| 70 | import static org.onosproject.segmentrouting.pwaas.L2TunnelHandler.Direction.REV; |
| 71 | |
| 72 | /** |
| 73 | * Handles pwaas related events. |
| 74 | */ |
| 75 | public class DefaultL2TunnelHandler implements L2TunnelHandler { |
| 76 | |
| 77 | private static final Logger log = LoggerFactory.getLogger(DefaultL2TunnelHandler.class); |
| 78 | |
| 79 | private final SegmentRoutingManager srManager; |
| 80 | /** |
| 81 | * To store the next objectives related to the initiation. |
| 82 | */ |
| 83 | private final ConsistentMap<String, NextObjective> l2InitiationNextObjStore; |
| 84 | /** |
| 85 | * To store the next objectives related to the termination. |
| 86 | */ |
| 87 | private final ConsistentMap<String, NextObjective> l2TerminationNextObjStore; |
| 88 | |
| 89 | /** |
| 90 | * To store policies. |
| 91 | */ |
| 92 | private final ConsistentMap<String, L2TunnelPolicy> l2PolicyStore; |
| 93 | |
| 94 | /** |
| 95 | * To store tunnels. |
| 96 | */ |
| 97 | private final ConsistentMap<String, L2Tunnel> l2TunnelStore; |
| 98 | |
| 99 | private final KryoNamespace.Builder l2TunnelKryo; |
| 100 | |
| 101 | /** |
| 102 | * Contains transport vlans used for spine-leaf pseudowires. |
| 103 | */ |
| 104 | private final DistributedSet<VlanId> vlanStore; |
| 105 | |
| 106 | /** |
| 107 | * Used for determining transport vlans for leaf-spine. |
| 108 | */ |
| 109 | private short transportVlanUpper = 4093, transportVlanLower = 3500; |
| 110 | |
| 111 | private static final VlanId UNTAGGED_TRANSPORT_VLAN = VlanId.vlanId((short) 4094); |
| 112 | |
| 113 | /** |
| 114 | * Create a l2 tunnel handler for the deploy and |
| 115 | * for the tear down of pseudo wires. |
| 116 | * |
| 117 | * @param segmentRoutingManager the segment routing manager |
| 118 | */ |
| 119 | public DefaultL2TunnelHandler(SegmentRoutingManager segmentRoutingManager) { |
| 120 | srManager = segmentRoutingManager; |
| 121 | l2TunnelKryo = new KryoNamespace.Builder() |
| 122 | .register(KryoNamespaces.API) |
| 123 | .register(L2Tunnel.class, |
| 124 | L2TunnelPolicy.class, |
| 125 | DefaultL2Tunnel.class, |
| 126 | DefaultL2TunnelPolicy.class, |
| 127 | L2Mode.class, |
| 128 | MplsLabel.class, |
| 129 | VlanId.class, |
| 130 | ConnectPoint.class); |
| 131 | |
| 132 | l2InitiationNextObjStore = srManager. |
| 133 | storageService. |
| 134 | <String, NextObjective>consistentMapBuilder(). |
| 135 | withName("onos-l2initiation-nextobj-store"). |
| 136 | withSerializer(Serializer.using(l2TunnelKryo.build())). |
| 137 | build(); |
| 138 | |
| 139 | l2TerminationNextObjStore = srManager.storageService. |
| 140 | <String, NextObjective>consistentMapBuilder() |
| 141 | .withName("onos-l2termination-nextobj-store") |
| 142 | .withSerializer(Serializer.using(l2TunnelKryo.build())) |
| 143 | .build(); |
| 144 | |
| 145 | l2PolicyStore = srManager.storageService |
| 146 | .<String, L2TunnelPolicy>consistentMapBuilder() |
| 147 | .withName("onos-l2-policy-store") |
| 148 | .withSerializer(Serializer.using(l2TunnelKryo.build())) |
| 149 | .build(); |
| 150 | |
| 151 | l2TunnelStore = srManager.storageService |
| 152 | .<String, L2Tunnel>consistentMapBuilder() |
| 153 | .withName("onos-l2-tunnel-store") |
| 154 | .withSerializer(Serializer.using(l2TunnelKryo.build())) |
| 155 | .build(); |
| 156 | |
| 157 | vlanStore = srManager.storageService.<VlanId>setBuilder() |
| 158 | .withName("onos-transport-vlan-store") |
| 159 | .withSerializer(Serializer.using( |
| 160 | new KryoNamespace.Builder() |
| 161 | .register(KryoNamespaces.API) |
| 162 | .build())) |
| 163 | .build() |
| 164 | .asDistributedSet(); |
| 165 | } |
| 166 | |
| 167 | /** |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 168 | * Used by manager only in initialization. |
| 169 | */ |
| 170 | @Override |
| 171 | public void init() { |
Andreas Pantelopoulos | cd33959 | 2018-02-23 14:18:00 -0800 | [diff] [blame^] | 172 | // Since we have no pseudowires in netcfg there |
| 173 | // is nothing to do in initialization. |
| 174 | // I leave it here because potentially we might need to |
| 175 | // use it in the future. |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 176 | } |
| 177 | |
| 178 | /** |
| 179 | * Returns all L2 Policies. |
| 180 | * |
| 181 | * @return List of policies |
| 182 | */ |
| 183 | @Override |
| 184 | public List<L2TunnelPolicy> getL2Policies() { |
| 185 | |
| 186 | return new ArrayList<>(l2PolicyStore |
| 187 | .values() |
| 188 | .stream() |
| 189 | .map(Versioned::value) |
| 190 | .collect(Collectors.toList())); |
| 191 | |
| 192 | } |
| 193 | |
| 194 | /** |
| 195 | * Returns all L2 Tunnels. |
| 196 | * |
| 197 | * @return List of tunnels. |
| 198 | */ |
| 199 | @Override |
| 200 | public List<L2Tunnel> getL2Tunnels() { |
| 201 | |
| 202 | return new ArrayList<>(l2TunnelStore |
| 203 | .values() |
| 204 | .stream() |
| 205 | .map(Versioned::value) |
| 206 | .collect(Collectors.toList())); |
| 207 | |
| 208 | } |
| 209 | |
| 210 | @Override |
| 211 | public void processLinkDown(Link link) { |
| 212 | |
| 213 | List<L2Tunnel> tunnels = getL2Tunnels(); |
| 214 | List<L2TunnelPolicy> policies = getL2Policies(); |
| 215 | |
| 216 | // determine affected pseudowires and update them at once |
| 217 | Set<L2TunnelDescription> pwToUpdate = tunnels |
| 218 | .stream() |
| 219 | .filter(tun -> tun.pathUsed().contains(link)) |
| 220 | .map(l2Tunnel -> { |
| 221 | L2TunnelPolicy policy = null; |
| 222 | for (L2TunnelPolicy l2Policy : policies) { |
| 223 | if (l2Policy.tunnelId() == l2Tunnel.tunnelId()) { |
| 224 | policy = l2Policy; |
| 225 | break; |
| 226 | } |
| 227 | } |
| 228 | |
| 229 | return new DefaultL2TunnelDescription(l2Tunnel, policy); |
| 230 | }) |
| 231 | .collect(Collectors.toSet()); |
| 232 | |
| 233 | |
| 234 | log.info("Pseudowires affected by link failure : {}, rerouting them...", pwToUpdate); |
| 235 | |
| 236 | // update all pseudowires |
| 237 | pwToUpdate.forEach(tun -> updatePw(tun, tun)); |
| 238 | } |
| 239 | |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 240 | /** |
| 241 | * Returns the new vlan id for an ingress point of a |
| 242 | * pseudowire. For double tagged, it is the outer, |
| 243 | * For single tagged it is the single tag, and for |
| 244 | * inner it is None. |
| 245 | * |
| 246 | * @param ingressOuter vlanid of ingress outer |
| 247 | * @param ingressInner vlanid of ingress inner |
| 248 | * @param egressOuter vlanid of egress outer |
| 249 | * @param egressInner vlanid of egress inner |
| 250 | * @return returns the vlan id which will be installed at vlan table 1. |
| 251 | */ |
| 252 | private VlanId determineEgressVlan(VlanId ingressOuter, VlanId ingressInner, |
| 253 | VlanId egressOuter, VlanId egressInner) { |
| 254 | |
| 255 | // validity of vlan combinations was checked at verifyPseudowire |
| 256 | if (!(ingressOuter.equals(VlanId.NONE))) { |
| 257 | return egressOuter; |
| 258 | } else if (!(ingressInner.equals(VlanId.NONE))) { |
| 259 | return egressInner; |
| 260 | } else { |
| 261 | return VlanId.vlanId("None"); |
| 262 | } |
| 263 | } |
| 264 | |
| 265 | /** |
| 266 | * Determines vlan used for transporting the pw traffic. |
| 267 | * |
| 268 | * Leaf-Leaf traffic is transferred untagged, thus we choose the UNTAGGED_TRANSPORT_VLAN |
| 269 | * and also make sure to add the popVlan instruction. |
| 270 | * For spine-leaf pws we choose the highest vlan value available from a certain range. |
| 271 | * |
| 272 | * @param spinePw if the pw is leaf-spine. |
| 273 | * @return The vlan id chossen to transport this pseudowire. If vlan is UNTAGGED_TRANSPORT_VLAN |
| 274 | * then the pw is transported untagged. |
| 275 | */ |
| 276 | private VlanId determineTransportVlan(boolean spinePw) { |
| 277 | |
| 278 | if (!spinePw) { |
| 279 | |
| 280 | log.info("Untagged transport with internal vlan {} for pseudowire!", UNTAGGED_TRANSPORT_VLAN); |
| 281 | return UNTAGGED_TRANSPORT_VLAN; |
| 282 | } else { |
| 283 | for (short i = transportVlanUpper; i > transportVlanLower; i--) { |
| 284 | |
| 285 | VlanId vlanToUse = VlanId.vlanId((short) i); |
| 286 | if (!vlanStore.contains(vlanToUse)) { |
| 287 | |
| 288 | vlanStore.add(vlanToUse); |
| 289 | log.info("Transport vlan {} for pseudowire!", vlanToUse); |
| 290 | return vlanToUse; |
| 291 | } |
| 292 | } |
| 293 | |
| 294 | log.info("No available transport vlan found, pseudowire traffic will be carried untagged " + |
| 295 | "with internal vlan {}!", UNTAGGED_TRANSPORT_VLAN); |
| 296 | return UNTAGGED_TRANSPORT_VLAN; |
| 297 | } |
| 298 | } |
| 299 | |
| 300 | /** |
Andreas Pantelopoulos | cd33959 | 2018-02-23 14:18:00 -0800 | [diff] [blame^] | 301 | * Adds a single pseudowire. |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 302 | * |
| 303 | * @param pw The pseudowire |
| 304 | * @param spinePw True if pseudowire is from leaf to spine |
| 305 | * @return result of pseudowire deployment |
| 306 | */ |
| 307 | private Result deployPseudowire(L2TunnelDescription pw, boolean spinePw) { |
| 308 | |
| 309 | Result result; |
| 310 | long l2TunnelId; |
| 311 | |
| 312 | l2TunnelId = pw.l2Tunnel().tunnelId(); |
| 313 | |
| 314 | // The tunnel id cannot be 0. |
| 315 | if (l2TunnelId == 0) { |
| 316 | log.warn("Tunnel id id must be > 0"); |
| 317 | return Result.ADDITION_ERROR; |
| 318 | } |
| 319 | |
| 320 | // get path here, need to use the same for fwd and rev direction |
| 321 | List<Link> path = getPath(pw.l2TunnelPolicy().cP1(), |
| 322 | pw.l2TunnelPolicy().cP2()); |
| 323 | if (path == null) { |
| 324 | log.info("Deploying process : No path between the connection points for pseudowire {}", l2TunnelId); |
| 325 | return WRONG_PARAMETERS; |
| 326 | } |
| 327 | |
| 328 | Link fwdNextHop; |
| 329 | Link revNextHop; |
| 330 | if (!spinePw) { |
| 331 | if (path.size() != 2) { |
| 332 | log.info("Deploying process : Path between two leafs should have size of 2, for pseudowire {}", |
| 333 | l2TunnelId); |
| 334 | return INTERNAL_ERROR; |
| 335 | } |
| 336 | |
| 337 | fwdNextHop = path.get(0); |
| 338 | revNextHop = reverseLink(path.get(1)); |
| 339 | } else { |
| 340 | if (path.size() != 1) { |
| 341 | log.info("Deploying process : Path between leaf spine should equal to 1, for pseudowire {}", |
| 342 | l2TunnelId); |
| 343 | return INTERNAL_ERROR; |
| 344 | } |
| 345 | |
| 346 | fwdNextHop = path.get(0); |
| 347 | revNextHop = reverseLink(path.get(0)); |
| 348 | } |
| 349 | |
| 350 | pw.l2Tunnel().setPath(path); |
| 351 | pw.l2Tunnel().setTransportVlan(determineTransportVlan(spinePw)); |
| 352 | |
| 353 | // next hops for next objectives |
| 354 | |
| 355 | log.info("Deploying process : Establishing forward direction for pseudowire {}", l2TunnelId); |
| 356 | |
Andreas Pantelopoulos | 1e61db5 | 2018-02-22 17:54:45 -0800 | [diff] [blame] | 357 | VlanId egressVlan = determineEgressVlan(pw.l2TunnelPolicy().cP1OuterTag(), |
| 358 | pw.l2TunnelPolicy().cP1InnerTag(), |
| 359 | pw.l2TunnelPolicy().cP2OuterTag(), |
| 360 | pw.l2TunnelPolicy().cP2InnerTag()); |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 361 | // We establish the tunnel. |
| 362 | // result.nextId will be used in fwd |
| 363 | result = deployPseudoWireInit(pw.l2Tunnel(), |
| 364 | pw.l2TunnelPolicy().cP1(), |
| 365 | pw.l2TunnelPolicy().cP2(), |
| 366 | FWD, |
| 367 | fwdNextHop, |
Andreas Pantelopoulos | 1e61db5 | 2018-02-22 17:54:45 -0800 | [diff] [blame] | 368 | spinePw, |
| 369 | egressVlan); |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 370 | if (result != SUCCESS) { |
| 371 | log.info("Deploying process : Error in deploying pseudowire initiation for CP1"); |
| 372 | return Result.ADDITION_ERROR; |
| 373 | } |
| 374 | |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 375 | // We create the policy. |
| 376 | result = deployPolicy(l2TunnelId, |
| 377 | pw.l2TunnelPolicy().cP1(), |
| 378 | pw.l2TunnelPolicy().cP1InnerTag(), |
| 379 | pw.l2TunnelPolicy().cP1OuterTag(), |
| 380 | egressVlan, |
| 381 | result.nextId); |
| 382 | if (result != SUCCESS) { |
| 383 | log.info("Deploying process : Error in deploying pseudowire policy for CP1"); |
| 384 | return Result.ADDITION_ERROR; |
| 385 | } |
| 386 | |
| 387 | // We terminate the tunnel |
| 388 | result = deployPseudoWireTerm(pw.l2Tunnel(), |
| 389 | pw.l2TunnelPolicy().cP2(), |
Andreas Pantelopoulos | 1e61db5 | 2018-02-22 17:54:45 -0800 | [diff] [blame] | 390 | egressVlan, |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 391 | FWD, |
| 392 | spinePw); |
| 393 | |
| 394 | if (result != SUCCESS) { |
| 395 | log.info("Deploying process : Error in deploying pseudowire termination for CP1"); |
| 396 | return Result.ADDITION_ERROR; |
| 397 | |
| 398 | } |
| 399 | |
| 400 | log.info("Deploying process : Establishing reverse direction for pseudowire {}", l2TunnelId); |
| 401 | |
Andreas Pantelopoulos | 1e61db5 | 2018-02-22 17:54:45 -0800 | [diff] [blame] | 402 | egressVlan = determineEgressVlan(pw.l2TunnelPolicy().cP2OuterTag(), |
| 403 | pw.l2TunnelPolicy().cP2InnerTag(), |
| 404 | pw.l2TunnelPolicy().cP1OuterTag(), |
| 405 | pw.l2TunnelPolicy().cP1InnerTag()); |
| 406 | |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 407 | // We establish the reverse tunnel. |
| 408 | result = deployPseudoWireInit(pw.l2Tunnel(), |
| 409 | pw.l2TunnelPolicy().cP2(), |
| 410 | pw.l2TunnelPolicy().cP1(), |
| 411 | REV, |
| 412 | revNextHop, |
Andreas Pantelopoulos | 1e61db5 | 2018-02-22 17:54:45 -0800 | [diff] [blame] | 413 | spinePw, |
| 414 | egressVlan); |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 415 | if (result != SUCCESS) { |
| 416 | log.info("Deploying process : Error in deploying pseudowire initiation for CP2"); |
| 417 | return Result.ADDITION_ERROR; |
| 418 | } |
| 419 | |
Andreas Pantelopoulos | 1e61db5 | 2018-02-22 17:54:45 -0800 | [diff] [blame] | 420 | |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 421 | result = deployPolicy(l2TunnelId, |
| 422 | pw.l2TunnelPolicy().cP2(), |
| 423 | pw.l2TunnelPolicy().cP2InnerTag(), |
| 424 | pw.l2TunnelPolicy().cP2OuterTag(), |
| 425 | egressVlan, |
| 426 | result.nextId); |
| 427 | if (result != SUCCESS) { |
| 428 | log.info("Deploying process : Error in deploying policy for CP2"); |
| 429 | return Result.ADDITION_ERROR; |
| 430 | } |
| 431 | |
| 432 | result = deployPseudoWireTerm(pw.l2Tunnel(), |
| 433 | pw.l2TunnelPolicy().cP1(), |
Andreas Pantelopoulos | 1e61db5 | 2018-02-22 17:54:45 -0800 | [diff] [blame] | 434 | egressVlan, |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 435 | REV, |
| 436 | spinePw); |
| 437 | |
| 438 | if (result != SUCCESS) { |
| 439 | log.info("Deploying process : Error in deploying pseudowire termination for CP2"); |
| 440 | return Result.ADDITION_ERROR; |
| 441 | } |
| 442 | |
| 443 | log.info("Deploying process : Updating relevant information for pseudowire {}", l2TunnelId); |
| 444 | |
| 445 | // Populate stores |
| 446 | l2TunnelStore.put(Long.toString(l2TunnelId), pw.l2Tunnel()); |
| 447 | l2PolicyStore.put(Long.toString(l2TunnelId), pw.l2TunnelPolicy()); |
| 448 | |
| 449 | return Result.SUCCESS; |
| 450 | } |
| 451 | |
| 452 | /** |
| 453 | * To deploy a number of pseudo wires. |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 454 | * |
| 455 | * @param pwToAdd the set of pseudo wires to add |
| 456 | */ |
Andreas Pantelopoulos | cd33959 | 2018-02-23 14:18:00 -0800 | [diff] [blame^] | 457 | public void deploy(Set<L2TunnelDescription> pwToAdd) { |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 458 | |
| 459 | Result result; |
| 460 | |
| 461 | for (L2TunnelDescription currentL2Tunnel : pwToAdd) { |
| 462 | ConnectPoint cp1 = currentL2Tunnel.l2TunnelPolicy().cP1(); |
| 463 | ConnectPoint cp2 = currentL2Tunnel.l2TunnelPolicy().cP2(); |
| 464 | long tunnelId = currentL2Tunnel.l2TunnelPolicy().tunnelId(); |
| 465 | |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 466 | |
| 467 | try { |
| 468 | // differentiate between leaf-leaf pseudowires and leaf-spine |
| 469 | // and pass the appropriate flag in them. |
| 470 | if (!srManager.deviceConfiguration().isEdgeDevice(cp1.deviceId()) && |
| 471 | !srManager.deviceConfiguration().isEdgeDevice(cp2.deviceId())) { |
| 472 | log.warn("Can not deploy pseudowire from spine to spine!"); |
| 473 | result = Result.INTERNAL_ERROR; |
| 474 | } else if (srManager.deviceConfiguration().isEdgeDevice(cp1.deviceId()) && |
| 475 | srManager.deviceConfiguration().isEdgeDevice(cp2.deviceId())) { |
| 476 | log.info("Deploying a leaf-leaf pseudowire {}", tunnelId); |
| 477 | result = deployPseudowire(currentL2Tunnel, false); |
| 478 | } else { |
| 479 | log.info("Deploying a leaf-spine pseudowire {}", tunnelId); |
| 480 | result = deployPseudowire(currentL2Tunnel, true); |
| 481 | } |
| 482 | } catch (DeviceConfigNotFoundException e) { |
| 483 | log.error("Exception caught when deploying pseudowire", e.toString()); |
| 484 | result = Result.INTERNAL_ERROR; |
| 485 | } |
| 486 | |
| 487 | switch (result) { |
| 488 | case INTERNAL_ERROR: |
| 489 | log.warn("Could not deploy pseudowire {}, internal error!", tunnelId); |
| 490 | break; |
| 491 | case WRONG_PARAMETERS: |
| 492 | log.warn("Could not deploy pseudowire {}, wrong parameters!", tunnelId); |
| 493 | break; |
| 494 | case ADDITION_ERROR: |
| 495 | log.warn("Could not deploy pseudowire {}, error in populating rules!", tunnelId); |
| 496 | break; |
| 497 | default: |
| 498 | log.info("Pseudowire with {} succesfully deployed!", tunnelId); |
| 499 | break; |
| 500 | } |
| 501 | } |
| 502 | } |
| 503 | |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 504 | /** |
| 505 | * Helper function to update a pw. |
| 506 | * <p> |
| 507 | * Called upon configuration changes that update existing pseudowires and |
| 508 | * when links fail. Checking of mastership for CP1 is mandatory because it is |
| 509 | * called in multiple instances for both cases. |
| 510 | * <p> |
| 511 | * Meant to call asynchronously for various events, thus this call can not block and need |
| 512 | * to perform asynchronous operations. |
| 513 | * <p> |
| 514 | * For this reason error checking is omitted. |
| 515 | * |
| 516 | * @param oldPw the pseudo wire to remove |
| 517 | * @param newPw the pseudo wire to add |
| 518 | */ |
| 519 | private void updatePw(L2TunnelDescription oldPw, |
| 520 | L2TunnelDescription newPw) { |
| 521 | ConnectPoint oldCp1 = oldPw.l2TunnelPolicy().cP1(); |
| 522 | long tunnelId = oldPw.l2Tunnel().tunnelId(); |
| 523 | |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 524 | // only determine if the new pseudowire is leaf-spine, because |
| 525 | // removal process is the same for both leaf-leaf and leaf-spine pws |
| 526 | boolean newPwSpine; |
| 527 | try { |
| 528 | newPwSpine = !srManager.deviceConfiguration().isEdgeDevice(newPw.l2TunnelPolicy().cP1().deviceId()) || |
| 529 | !srManager.deviceConfiguration().isEdgeDevice(newPw.l2TunnelPolicy().cP2().deviceId()); |
| 530 | } catch (DeviceConfigNotFoundException e) { |
| 531 | // if exception is caught treat the new pw as leaf-leaf |
| 532 | newPwSpine = false; |
| 533 | } |
| 534 | |
| 535 | // copy the variable here because we need to use it in lambda thus it needs to be final |
| 536 | boolean finalNewPwSpine = newPwSpine; |
| 537 | |
| 538 | log.info("Updating pseudowire {}", oldPw.l2Tunnel().tunnelId()); |
| 539 | |
| 540 | // The async tasks to orchestrate the next and forwarding update |
| 541 | CompletableFuture<ObjectiveError> fwdInitNextFuture = new CompletableFuture<>(); |
| 542 | CompletableFuture<ObjectiveError> revInitNextFuture = new CompletableFuture<>(); |
| 543 | CompletableFuture<ObjectiveError> fwdTermNextFuture = new CompletableFuture<>(); |
| 544 | CompletableFuture<ObjectiveError> revTermNextFuture = new CompletableFuture<>(); |
| 545 | CompletableFuture<ObjectiveError> fwdPwFuture = new CompletableFuture<>(); |
| 546 | CompletableFuture<ObjectiveError> revPwFuture = new CompletableFuture<>(); |
| 547 | |
| 548 | // first delete all information from our stores, we can not do it asynchronously |
| 549 | l2PolicyStore.remove(Long.toString(tunnelId)); |
| 550 | |
| 551 | // grab the old l2 tunnel from the store, since it carries information which is not exposed |
| 552 | // to the user configuration and set it to oldPw. |
| 553 | oldPw.setL2Tunnel(l2TunnelStore.get(Long.toString(tunnelId)).value()); |
| 554 | VlanId transportVlan = l2TunnelStore.get(Long.toString(tunnelId)).value().transportVlan(); |
| 555 | l2TunnelStore.remove(Long.toString(tunnelId)); |
| 556 | |
| 557 | // remove the reserved transport vlan, if one is used |
| 558 | if (!transportVlan.equals(UNTAGGED_TRANSPORT_VLAN)) { |
| 559 | vlanStore.remove(transportVlan); |
| 560 | } |
| 561 | |
| 562 | // First we remove both policy. |
| 563 | log.debug("Start deleting fwd policy for {}", tunnelId); |
| 564 | VlanId egressVlan = determineEgressVlan(oldPw.l2TunnelPolicy().cP1OuterTag(), |
| 565 | oldPw.l2TunnelPolicy().cP1InnerTag(), |
| 566 | oldPw.l2TunnelPolicy().cP2OuterTag(), |
| 567 | oldPw.l2TunnelPolicy().cP2InnerTag()); |
| 568 | deletePolicy(tunnelId, oldPw.l2TunnelPolicy().cP1(), |
| 569 | oldPw.l2TunnelPolicy().cP1InnerTag(), |
| 570 | oldPw.l2TunnelPolicy().cP1OuterTag(), |
| 571 | egressVlan, |
| 572 | fwdInitNextFuture, |
| 573 | FWD); |
| 574 | |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 575 | deletePolicy(tunnelId, oldPw.l2TunnelPolicy().cP2(), |
| 576 | oldPw.l2TunnelPolicy().cP2InnerTag(), |
| 577 | oldPw.l2TunnelPolicy().cP2OuterTag(), |
| 578 | egressVlan, revInitNextFuture, |
| 579 | REV); |
| 580 | |
| 581 | // Finally we remove both the tunnels. |
| 582 | fwdInitNextFuture.thenAcceptAsync(status -> { |
| 583 | if (status == null) { |
| 584 | log.debug("Update process : Fwd policy removed. " + |
| 585 | "Now remove fwd {} for {}", INITIATION, tunnelId); |
| 586 | tearDownPseudoWireInit(tunnelId, oldPw.l2TunnelPolicy().cP1(), fwdTermNextFuture, FWD); |
| 587 | } |
| 588 | }); |
| 589 | revInitNextFuture.thenAcceptAsync(status -> { |
| 590 | if (status == null) { |
| 591 | log.debug("Update process : Rev policy removed. " + |
| 592 | "Now remove rev {} for {}", INITIATION, tunnelId); |
| 593 | tearDownPseudoWireInit(tunnelId, oldPw.l2TunnelPolicy().cP2(), revTermNextFuture, REV); |
| 594 | } |
| 595 | }); |
| 596 | fwdTermNextFuture.thenAcceptAsync(status -> { |
| 597 | if (status == null) { |
| 598 | log.debug("Update process : Fwd {} removed. " + |
| 599 | "Now remove fwd {} for {}", INITIATION, TERMINATION, tunnelId); |
| 600 | tearDownPseudoWireTerm(oldPw.l2Tunnel(), oldPw.l2TunnelPolicy().cP2(), fwdPwFuture, FWD); |
| 601 | } |
| 602 | }); |
| 603 | revTermNextFuture.thenAcceptAsync(status -> { |
| 604 | if (status == null) { |
| 605 | log.debug("Update process : Rev {} removed. " + |
| 606 | "Now remove rev {} for {}", INITIATION, TERMINATION, tunnelId); |
| 607 | tearDownPseudoWireTerm(oldPw.l2Tunnel(), oldPw.l2TunnelPolicy().cP1(), revPwFuture, REV); |
| 608 | } |
| 609 | }); |
| 610 | |
| 611 | // get path here, need to use the same for fwd and rev direction |
| 612 | List<Link> path = getPath(newPw.l2TunnelPolicy().cP1(), |
| 613 | newPw.l2TunnelPolicy().cP2()); |
| 614 | if (path == null) { |
| 615 | log.error("Update process : " + |
| 616 | "No path between the connection points for pseudowire {}", newPw.l2Tunnel().tunnelId()); |
| 617 | return; |
| 618 | } |
| 619 | |
| 620 | Link fwdNextHop, revNextHop; |
| 621 | if (!finalNewPwSpine) { |
| 622 | if (path.size() != 2) { |
| 623 | log.error("Update process : Error, path between two leafs should have size of 2, for pseudowire {}", |
| 624 | newPw.l2Tunnel().tunnelId()); |
| 625 | return; |
| 626 | } |
| 627 | fwdNextHop = path.get(0); |
| 628 | revNextHop = reverseLink(path.get(1)); |
| 629 | } else { |
| 630 | if (path.size() != 1) { |
| 631 | log.error("Update process : Error, path between leaf spine should equal to 1, for pseudowire {}", |
| 632 | newPw.l2Tunnel().tunnelId()); |
| 633 | return; |
| 634 | } |
| 635 | fwdNextHop = path.get(0); |
| 636 | revNextHop = reverseLink(path.get(0)); |
| 637 | } |
| 638 | |
| 639 | // set new path and transport vlan. |
| 640 | newPw.l2Tunnel().setPath(path); |
| 641 | newPw.l2Tunnel().setTransportVlan(determineTransportVlan(newPwSpine)); |
| 642 | |
| 643 | // At the end we install the updated PW. |
| 644 | fwdPwFuture.thenAcceptAsync(status -> { |
| 645 | if (status == null) { |
| 646 | |
| 647 | // Upgrade stores and book keeping information, need to move this here |
| 648 | // cause this call is asynchronous. |
| 649 | l2PolicyStore.put(Long.toString(tunnelId), newPw.l2TunnelPolicy()); |
| 650 | l2TunnelStore.put(Long.toString(tunnelId), newPw.l2Tunnel()); |
| 651 | |
Andreas Pantelopoulos | 1e61db5 | 2018-02-22 17:54:45 -0800 | [diff] [blame] | 652 | VlanId egressVlanId = determineEgressVlan(newPw.l2TunnelPolicy().cP1OuterTag(), |
| 653 | newPw.l2TunnelPolicy().cP1InnerTag(), |
| 654 | newPw.l2TunnelPolicy().cP2OuterTag(), |
| 655 | newPw.l2TunnelPolicy().cP2InnerTag()); |
| 656 | |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 657 | log.debug("Update process : Deploying new fwd pw for {}", tunnelId); |
| 658 | Result lamdaResult = deployPseudoWireInit(newPw.l2Tunnel(), newPw.l2TunnelPolicy().cP1(), |
| 659 | newPw.l2TunnelPolicy().cP2(), FWD, |
Andreas Pantelopoulos | 1e61db5 | 2018-02-22 17:54:45 -0800 | [diff] [blame] | 660 | fwdNextHop, finalNewPwSpine, egressVlanId); |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 661 | if (lamdaResult != SUCCESS) { |
| 662 | return; |
| 663 | } |
| 664 | |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 665 | lamdaResult = deployPolicy(tunnelId, newPw.l2TunnelPolicy().cP1(), |
| 666 | newPw.l2TunnelPolicy().cP1InnerTag(), |
| 667 | newPw.l2TunnelPolicy().cP1OuterTag(), |
| 668 | egressVlanId, lamdaResult.nextId); |
| 669 | if (lamdaResult != SUCCESS) { |
| 670 | return; |
| 671 | } |
| 672 | deployPseudoWireTerm(newPw.l2Tunnel(), newPw.l2TunnelPolicy().cP2(), |
Andreas Pantelopoulos | 1e61db5 | 2018-02-22 17:54:45 -0800 | [diff] [blame] | 673 | egressVlanId, FWD, finalNewPwSpine); |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 674 | |
| 675 | } |
| 676 | }); |
| 677 | revPwFuture.thenAcceptAsync(status -> { |
| 678 | if (status == null) { |
| 679 | |
| 680 | log.debug("Update process : Deploying new rev pw for {}", tunnelId); |
Andreas Pantelopoulos | 1e61db5 | 2018-02-22 17:54:45 -0800 | [diff] [blame] | 681 | |
| 682 | VlanId egressVlanId = determineEgressVlan(newPw.l2TunnelPolicy().cP2OuterTag(), |
| 683 | newPw.l2TunnelPolicy().cP2InnerTag(), |
| 684 | newPw.l2TunnelPolicy().cP1OuterTag(), |
| 685 | newPw.l2TunnelPolicy().cP1InnerTag()); |
| 686 | |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 687 | Result lamdaResult = deployPseudoWireInit(newPw.l2Tunnel(), |
| 688 | newPw.l2TunnelPolicy().cP2(), |
| 689 | newPw.l2TunnelPolicy().cP1(), |
| 690 | REV, |
Andreas Pantelopoulos | 1e61db5 | 2018-02-22 17:54:45 -0800 | [diff] [blame] | 691 | revNextHop, finalNewPwSpine, egressVlanId); |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 692 | if (lamdaResult != SUCCESS) { |
| 693 | return; |
| 694 | } |
| 695 | |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 696 | lamdaResult = deployPolicy(tunnelId, |
| 697 | newPw.l2TunnelPolicy().cP2(), |
| 698 | newPw.l2TunnelPolicy().cP2InnerTag(), |
| 699 | newPw.l2TunnelPolicy().cP2OuterTag(), |
| 700 | egressVlanId, |
| 701 | lamdaResult.nextId); |
| 702 | if (lamdaResult != SUCCESS) { |
| 703 | return; |
| 704 | } |
| 705 | deployPseudoWireTerm(newPw.l2Tunnel(), |
| 706 | newPw.l2TunnelPolicy().cP1(), |
Andreas Pantelopoulos | 1e61db5 | 2018-02-22 17:54:45 -0800 | [diff] [blame] | 707 | egressVlanId, |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 708 | REV, finalNewPwSpine); |
| 709 | } |
| 710 | }); |
| 711 | } |
| 712 | |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 713 | /** |
| 714 | * Helper function for removing a single pseudowire. |
| 715 | * <p> |
| 716 | * No mastership of CP1 is checked, because it can be called from |
| 717 | * the CLI for removal of pseudowires. |
| 718 | * |
| 719 | * @param l2TunnelId the id of the pseudowire to tear down |
| 720 | * @return Returns SUCCESS if no error is obeserved or an appropriate |
| 721 | * error on a failure |
| 722 | */ |
| 723 | private Result tearDownPseudowire(long l2TunnelId) { |
| 724 | |
| 725 | CompletableFuture<ObjectiveError> fwdInitNextFuture = new CompletableFuture<>(); |
| 726 | CompletableFuture<ObjectiveError> fwdTermNextFuture = new CompletableFuture<>(); |
| 727 | |
| 728 | CompletableFuture<ObjectiveError> revInitNextFuture = new CompletableFuture<>(); |
| 729 | CompletableFuture<ObjectiveError> revTermNextFuture = new CompletableFuture<>(); |
| 730 | |
| 731 | if (l2TunnelId == 0) { |
| 732 | log.warn("Removal process : Tunnel id cannot be 0"); |
| 733 | return Result.WRONG_PARAMETERS; |
| 734 | } |
| 735 | |
| 736 | // check existence of tunnels/policy in the store, if one is missing abort! |
| 737 | Versioned<L2Tunnel> l2TunnelVersioned = l2TunnelStore.get(Long.toString(l2TunnelId)); |
| 738 | Versioned<L2TunnelPolicy> l2TunnelPolicyVersioned = l2PolicyStore.get(Long.toString(l2TunnelId)); |
| 739 | if ((l2TunnelVersioned == null) || (l2TunnelPolicyVersioned == null)) { |
| 740 | log.warn("Removal process : Policy and/or tunnel missing for tunnel id {}", l2TunnelId); |
| 741 | return Result.REMOVAL_ERROR; |
| 742 | } |
| 743 | |
| 744 | L2TunnelDescription pwToRemove = new DefaultL2TunnelDescription(l2TunnelVersioned.value(), |
| 745 | l2TunnelPolicyVersioned.value()); |
| 746 | |
| 747 | // remove the tunnels and the policies from the store |
| 748 | l2PolicyStore.remove(Long.toString(l2TunnelId)); |
| 749 | l2TunnelStore.remove(Long.toString(l2TunnelId)); |
| 750 | |
| 751 | // remove the reserved transport vlan |
| 752 | if (!pwToRemove.l2Tunnel().transportVlan().equals(UNTAGGED_TRANSPORT_VLAN)) { |
| 753 | vlanStore.remove(pwToRemove.l2Tunnel().transportVlan()); |
| 754 | } |
| 755 | |
| 756 | log.info("Removal process : Tearing down forward direction of pseudowire {}", l2TunnelId); |
| 757 | |
| 758 | VlanId egressVlan = determineEgressVlan(pwToRemove.l2TunnelPolicy().cP1OuterTag(), |
| 759 | pwToRemove.l2TunnelPolicy().cP1InnerTag(), |
| 760 | pwToRemove.l2TunnelPolicy().cP2OuterTag(), |
| 761 | pwToRemove.l2TunnelPolicy().cP2InnerTag()); |
| 762 | deletePolicy(l2TunnelId, |
| 763 | pwToRemove.l2TunnelPolicy().cP1(), |
| 764 | pwToRemove.l2TunnelPolicy().cP1InnerTag(), |
| 765 | pwToRemove.l2TunnelPolicy().cP1OuterTag(), |
| 766 | egressVlan, |
| 767 | fwdInitNextFuture, |
| 768 | FWD); |
| 769 | |
| 770 | fwdInitNextFuture.thenAcceptAsync(status -> { |
| 771 | if (status == null) { |
| 772 | // Finally we will tear down the pseudo wire. |
| 773 | tearDownPseudoWireInit(l2TunnelId, |
| 774 | pwToRemove.l2TunnelPolicy().cP1(), |
| 775 | fwdTermNextFuture, |
| 776 | FWD); |
| 777 | } |
| 778 | }); |
| 779 | |
| 780 | fwdTermNextFuture.thenAcceptAsync(status -> { |
| 781 | if (status == null) { |
| 782 | tearDownPseudoWireTerm(pwToRemove.l2Tunnel(), |
| 783 | pwToRemove.l2TunnelPolicy().cP2(), |
| 784 | null, |
| 785 | FWD); |
| 786 | } |
| 787 | }); |
| 788 | |
| 789 | log.info("Removal process : Tearing down reverse direction of pseudowire {}", l2TunnelId); |
| 790 | |
| 791 | egressVlan = determineEgressVlan(pwToRemove.l2TunnelPolicy().cP2OuterTag(), |
| 792 | pwToRemove.l2TunnelPolicy().cP2InnerTag(), |
| 793 | pwToRemove.l2TunnelPolicy().cP1OuterTag(), |
| 794 | pwToRemove.l2TunnelPolicy().cP1InnerTag()); |
| 795 | |
| 796 | // We do the same operations on the reverse side. |
| 797 | deletePolicy(l2TunnelId, |
| 798 | pwToRemove.l2TunnelPolicy().cP2(), |
| 799 | pwToRemove.l2TunnelPolicy().cP2InnerTag(), |
| 800 | pwToRemove.l2TunnelPolicy().cP2OuterTag(), |
| 801 | egressVlan, |
| 802 | revInitNextFuture, |
| 803 | REV); |
| 804 | |
| 805 | revInitNextFuture.thenAcceptAsync(status -> { |
| 806 | if (status == null) { |
| 807 | tearDownPseudoWireInit(l2TunnelId, |
| 808 | pwToRemove.l2TunnelPolicy().cP2(), |
| 809 | revTermNextFuture, |
| 810 | REV); |
| 811 | } |
| 812 | }); |
| 813 | |
| 814 | revTermNextFuture.thenAcceptAsync(status -> { |
| 815 | if (status == null) { |
| 816 | tearDownPseudoWireTerm(pwToRemove.l2Tunnel(), |
| 817 | pwToRemove.l2TunnelPolicy().cP1(), |
| 818 | null, |
| 819 | REV); |
| 820 | } |
| 821 | }); |
| 822 | |
| 823 | return Result.SUCCESS; |
| 824 | } |
| 825 | |
| 826 | @Override |
| 827 | public void tearDown(Set<L2TunnelDescription> pwToRemove) { |
| 828 | |
| 829 | Result result; |
| 830 | |
| 831 | // We remove all the pw in the configuration file. |
| 832 | for (L2TunnelDescription currentL2Tunnel : pwToRemove) { |
| 833 | ConnectPoint cp1 = currentL2Tunnel.l2TunnelPolicy().cP1(); |
| 834 | ConnectPoint cp2 = currentL2Tunnel.l2TunnelPolicy().cP2(); |
| 835 | long tunnelId = currentL2Tunnel.l2TunnelPolicy().tunnelId(); |
| 836 | |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 837 | // no need to differentiate here between leaf-leaf and leaf-spine, because |
| 838 | // the only change is in the groups, which we do not remove either way |
| 839 | log.info("Removing pseudowire {}", tunnelId); |
| 840 | |
| 841 | result = tearDownPseudowire(tunnelId); |
| 842 | switch (result) { |
| 843 | case WRONG_PARAMETERS: |
| 844 | log.warn("Error in supplied parameters for the pseudowire removal with tunnel id {}!", |
| 845 | tunnelId); |
| 846 | break; |
| 847 | case REMOVAL_ERROR: |
| 848 | log.warn("Error in pseudowire removal with tunnel id {}!", tunnelId); |
| 849 | break; |
| 850 | default: |
| 851 | log.warn("Pseudowire with tunnel id {} was removed successfully", tunnelId); |
| 852 | } |
| 853 | } |
| 854 | } |
| 855 | |
| 856 | /** |
| 857 | * Handles the policy establishment which consists in |
| 858 | * create the filtering and forwarding objectives related |
| 859 | * to the initiation and termination. |
| 860 | * |
| 861 | * @param tunnelId the tunnel id |
| 862 | * @param ingress the ingress point |
| 863 | * @param ingressInner the ingress inner tag |
| 864 | * @param ingressOuter the ingress outer tag |
| 865 | * @param nextId the next objective id |
| 866 | * @param egressVlan Vlan-id to set, depends on ingress vlan |
| 867 | * combinations. For example, if pw is double tagged |
| 868 | * then this is the value of the outer vlan, if single |
| 869 | * tagged then it is the new value of the single tag. |
| 870 | * Should be None for untagged traffic. |
| 871 | * @return the result of the operation |
| 872 | */ |
| 873 | private Result deployPolicy(long tunnelId, ConnectPoint ingress, VlanId ingressInner, |
| 874 | VlanId ingressOuter, VlanId egressVlan, int nextId) { |
| 875 | |
| 876 | List<Objective> objectives = Lists.newArrayList(); |
| 877 | // We create the forwarding objective for supporting |
| 878 | // the l2 tunnel. |
| 879 | ForwardingObjective.Builder fwdBuilder = createInitFwdObjective(tunnelId, ingress.port(), nextId); |
| 880 | // We create and add objective context. |
| 881 | ObjectiveContext context = new DefaultObjectiveContext((objective) -> |
| 882 | log.debug("FwdObj for tunnel {} populated", tunnelId), |
| 883 | (objective, error) -> |
| 884 | log.warn("Failed to populate fwdrObj " + |
| 885 | "for tunnel {}", tunnelId, error)); |
| 886 | objectives.add(fwdBuilder.add(context)); |
| 887 | |
| 888 | // We create the filtering objective to define the |
| 889 | // permit traffic in the switch |
| 890 | FilteringObjective.Builder filtBuilder = createFiltObjective(ingress.port(), ingressInner, ingressOuter); |
| 891 | |
| 892 | // We add the metadata. |
| 893 | TrafficTreatment.Builder treatment = DefaultTrafficTreatment |
| 894 | .builder() |
| 895 | .setTunnelId(tunnelId) |
| 896 | .setVlanId(egressVlan); |
| 897 | filtBuilder.withMeta(treatment.build()); |
| 898 | |
| 899 | // We create and add objective context. |
| 900 | context = new DefaultObjectiveContext((objective) -> log.debug("FilterObj for tunnel {} populated", tunnelId), |
| 901 | (objective, error) -> log.warn("Failed to populate filterObj for " + |
| 902 | "tunnel {}", tunnelId, error)); |
| 903 | objectives.add(filtBuilder.add(context)); |
| 904 | |
| 905 | for (Objective objective : objectives) { |
| 906 | if (objective instanceof ForwardingObjective) { |
| 907 | srManager.flowObjectiveService.forward(ingress.deviceId(), (ForwardingObjective) objective); |
| 908 | log.debug("Creating new FwdObj for initiation NextObj with id={} for tunnel {}", nextId, tunnelId); |
| 909 | } else { |
| 910 | srManager.flowObjectiveService.filter(ingress.deviceId(), (FilteringObjective) objective); |
| 911 | log.debug("Creating new FiltObj for tunnel {}", tunnelId); |
| 912 | } |
| 913 | } |
| 914 | return SUCCESS; |
| 915 | } |
| 916 | |
| 917 | /** |
| 918 | * Handles the tunnel establishment which consists in |
| 919 | * create the next objectives related to the initiation. |
| 920 | * |
| 921 | * @param l2Tunnel the tunnel to deploy |
| 922 | * @param ingress the ingress connect point |
| 923 | * @param egress the egress connect point |
| 924 | * @param direction the direction of the pw |
| 925 | * @param spinePw if the pseudowire involves a spine switch |
| 926 | * @return the result of the operation |
| 927 | */ |
| 928 | private Result deployPseudoWireInit(L2Tunnel l2Tunnel, ConnectPoint ingress, |
Andreas Pantelopoulos | 1e61db5 | 2018-02-22 17:54:45 -0800 | [diff] [blame] | 929 | ConnectPoint egress, Direction direction, |
| 930 | Link nextHop, boolean spinePw, VlanId termVlanId) { |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 931 | |
| 932 | if (nextHop == null) { |
| 933 | log.warn("No path between ingress and egress cps for tunnel {}", l2Tunnel.tunnelId()); |
| 934 | return WRONG_PARAMETERS; |
| 935 | } |
| 936 | |
| 937 | // We create the next objective without the metadata |
| 938 | // context and id. We check if it already exists in the |
| 939 | // store. If not we store as it is in the store. |
| 940 | NextObjective.Builder nextObjectiveBuilder = createNextObjective(INITIATION, |
| 941 | nextHop.src(), |
| 942 | nextHop.dst(), |
| 943 | l2Tunnel, |
| 944 | egress.deviceId(), |
Andreas Pantelopoulos | 1e61db5 | 2018-02-22 17:54:45 -0800 | [diff] [blame] | 945 | spinePw, |
| 946 | termVlanId); |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 947 | |
| 948 | if (nextObjectiveBuilder == null) { |
| 949 | return INTERNAL_ERROR; |
| 950 | } |
| 951 | // We set the metadata. We will use this metadata |
| 952 | // to inform the driver we are doing a l2 tunnel. |
| 953 | TrafficSelector metadata = DefaultTrafficSelector |
| 954 | .builder() |
| 955 | .matchTunnelId(l2Tunnel.tunnelId()) |
| 956 | .build(); |
| 957 | nextObjectiveBuilder.withMeta(metadata); |
| 958 | int nextId = srManager.flowObjectiveService.allocateNextId(); |
| 959 | if (nextId < 0) { |
| 960 | log.warn("Not able to allocate a next id for initiation"); |
| 961 | return INTERNAL_ERROR; |
| 962 | } |
| 963 | nextObjectiveBuilder.withId(nextId); |
| 964 | String key = generateKey(l2Tunnel.tunnelId(), direction); |
| 965 | l2InitiationNextObjStore.put(key, nextObjectiveBuilder.add()); |
| 966 | ObjectiveContext context = new DefaultObjectiveContext((objective) -> |
| 967 | log.debug("Initiation l2 tunnel rule " + |
| 968 | "for {} populated", |
| 969 | l2Tunnel.tunnelId()), |
| 970 | (objective, error) -> |
| 971 | log.warn("Failed to populate Initiation " + |
| 972 | "l2 tunnel rule for {}: {}", |
| 973 | l2Tunnel.tunnelId(), error)); |
| 974 | NextObjective nextObjective = nextObjectiveBuilder.add(context); |
| 975 | srManager.flowObjectiveService.next(ingress.deviceId(), nextObjective); |
| 976 | log.debug("Initiation next objective for {} not found. Creating new NextObj with id={}", |
| 977 | l2Tunnel.tunnelId(), nextObjective.id()); |
| 978 | Result result = SUCCESS; |
| 979 | result.nextId = nextObjective.id(); |
| 980 | return result; |
| 981 | } |
| 982 | |
| 983 | /** |
| 984 | * Handles the tunnel termination, which consists in the creation |
| 985 | * of a forwarding objective and a next objective. |
| 986 | * |
| 987 | * @param l2Tunnel the tunnel to terminate |
| 988 | * @param egress the egress point |
| 989 | * @param egressVlan the expected vlan at egress |
| 990 | * @param direction the direction |
| 991 | * @param spinePw if the pseudowire involves a spine switch |
| 992 | * @return the result of the operation |
| 993 | */ |
| 994 | private Result deployPseudoWireTerm(L2Tunnel l2Tunnel, ConnectPoint egress, |
| 995 | VlanId egressVlan, Direction direction, boolean spinePw) { |
| 996 | |
| 997 | // We create the group relative to the termination. |
| 998 | NextObjective.Builder nextObjectiveBuilder = createNextObjective(TERMINATION, egress, null, |
| 999 | l2Tunnel, egress.deviceId(), |
Andreas Pantelopoulos | 1e61db5 | 2018-02-22 17:54:45 -0800 | [diff] [blame] | 1000 | spinePw, |
| 1001 | egressVlan); |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 1002 | if (nextObjectiveBuilder == null) { |
| 1003 | return INTERNAL_ERROR; |
| 1004 | } |
| 1005 | TrafficSelector metadata = DefaultTrafficSelector |
| 1006 | .builder() |
| 1007 | .matchVlanId(egressVlan) |
| 1008 | .build(); |
| 1009 | nextObjectiveBuilder.withMeta(metadata); |
| 1010 | int nextId = srManager.flowObjectiveService.allocateNextId(); |
| 1011 | if (nextId < 0) { |
| 1012 | log.warn("Not able to allocate a next id for initiation"); |
| 1013 | return INTERNAL_ERROR; |
| 1014 | } |
| 1015 | nextObjectiveBuilder.withId(nextId); |
| 1016 | String key = generateKey(l2Tunnel.tunnelId(), direction); |
| 1017 | l2TerminationNextObjStore.put(key, nextObjectiveBuilder.add()); |
| 1018 | ObjectiveContext context = new DefaultObjectiveContext((objective) -> log.debug("Termination l2 tunnel rule " + |
| 1019 | "for {} populated", |
| 1020 | l2Tunnel.tunnelId()), |
| 1021 | (objective, error) -> log.warn("Failed to populate " + |
| 1022 | "termination l2 tunnel " + |
| 1023 | "rule for {}: {}", |
| 1024 | l2Tunnel.tunnelId(), |
| 1025 | error)); |
| 1026 | NextObjective nextObjective = nextObjectiveBuilder.add(context); |
| 1027 | srManager.flowObjectiveService.next(egress.deviceId(), nextObjective); |
| 1028 | log.debug("Termination next objective for {} not found. Creating new NextObj with id={}", |
| 1029 | l2Tunnel.tunnelId(), nextObjective.id()); |
| 1030 | |
| 1031 | // We create the flow relative to the termination. |
| 1032 | ForwardingObjective.Builder fwdBuilder = createTermFwdObjective(l2Tunnel.pwLabel(), l2Tunnel.tunnelId(), |
| 1033 | egress.port(), nextObjective.id()); |
| 1034 | context = new DefaultObjectiveContext((objective) -> log.debug("FwdObj for tunnel termination {} populated", |
| 1035 | l2Tunnel.tunnelId()), |
| 1036 | (objective, error) -> log.warn("Failed to populate fwdrObj" + |
| 1037 | " for tunnel termination {}", |
| 1038 | l2Tunnel.tunnelId(), error)); |
| 1039 | srManager.flowObjectiveService.forward(egress.deviceId(), fwdBuilder.add(context)); |
| 1040 | log.debug("Creating new FwdObj for termination NextObj with id={} for tunnel {}", |
| 1041 | nextId, l2Tunnel.tunnelId()); |
| 1042 | |
| 1043 | if (spinePw) { |
| 1044 | |
| 1045 | // determine the input port at the |
| 1046 | PortNumber inPort; |
| 1047 | |
| 1048 | if (egress.deviceId(). |
| 1049 | equals(l2Tunnel.pathUsed().get(0).dst().deviceId())) { |
| 1050 | inPort = l2Tunnel.pathUsed().get(0).dst().port(); |
| 1051 | } else { |
| 1052 | inPort = l2Tunnel.pathUsed().get(0).src().port(); |
| 1053 | } |
| 1054 | |
| 1055 | MacAddress dstMac; |
| 1056 | try { |
| 1057 | dstMac = srManager.deviceConfiguration().getDeviceMac(egress.deviceId()); |
| 1058 | } catch (Exception e) { |
| 1059 | log.info("Device not found in configuration, no programming of MAC address"); |
| 1060 | dstMac = null; |
| 1061 | } |
| 1062 | |
| 1063 | log.info("Populating filtering objective for pseudowire transport" + |
| 1064 | " with vlan = {}, port = {}, mac = {}", |
| 1065 | l2Tunnel.transportVlan(), |
| 1066 | inPort, |
| 1067 | dstMac); |
| 1068 | FilteringObjective.Builder filteringObjectiveBuilder = |
| 1069 | createNormalPipelineFiltObjective(inPort, l2Tunnel.transportVlan(), dstMac); |
| 1070 | context = new DefaultObjectiveContext(( objective ) -> |
| 1071 | log.debug("Special filtObj for " + "for {} populated", |
| 1072 | l2Tunnel.tunnelId()), |
| 1073 | ( objective, error ) -> |
| 1074 | log.warn("Failed to populate " + |
| 1075 | "special filtObj " + |
| 1076 | "rule for {}: {}", |
| 1077 | l2Tunnel.tunnelId(), error)); |
| 1078 | TrafficTreatment.Builder treatment = DefaultTrafficTreatment.builder(); |
| 1079 | filteringObjectiveBuilder.withMeta(treatment.build()); |
| 1080 | srManager.flowObjectiveService.filter(egress.deviceId(), filteringObjectiveBuilder.add(context)); |
| 1081 | log.debug("Creating new special FiltObj for termination point with tunnel {} for port {}", |
| 1082 | l2Tunnel.tunnelId(), |
| 1083 | inPort); |
| 1084 | } |
| 1085 | |
| 1086 | return SUCCESS; |
| 1087 | } |
| 1088 | |
| 1089 | |
| 1090 | /** |
| 1091 | * Creates the filtering objective according to a given port and vlanid. |
| 1092 | * |
| 1093 | * @param inPort the in port |
| 1094 | * @param vlanId the inner vlan tag |
| 1095 | * @return the filtering objective |
| 1096 | */ |
| 1097 | private FilteringObjective.Builder createNormalPipelineFiltObjective(PortNumber inPort, |
| 1098 | VlanId vlanId, |
| 1099 | MacAddress dstMac) { |
| 1100 | |
| 1101 | log.info("Creating filtering objective for pseudowire transport with vlan={}, port={}, mac={}", |
| 1102 | vlanId, |
| 1103 | inPort, |
| 1104 | dstMac); |
| 1105 | FilteringObjective.Builder fwdBuilder = DefaultFilteringObjective |
| 1106 | .builder() |
| 1107 | .withKey(Criteria.matchInPort(inPort)) |
| 1108 | .addCondition(Criteria.matchVlanId(vlanId)) |
| 1109 | .withPriority(SegmentRoutingService.DEFAULT_PRIORITY) |
| 1110 | .permit() |
| 1111 | .fromApp(srManager.appId()); |
| 1112 | |
| 1113 | if (dstMac != null) { |
| 1114 | fwdBuilder.addCondition(Criteria.matchEthDst(dstMac)); |
| 1115 | } |
| 1116 | |
| 1117 | return fwdBuilder; |
| 1118 | } |
| 1119 | |
| 1120 | /** |
| 1121 | * Creates the filtering objective according to a given policy. |
| 1122 | * |
| 1123 | * @param inPort the in port |
| 1124 | * @param innerTag the inner vlan tag |
| 1125 | * @param outerTag the outer vlan tag |
| 1126 | * @return the filtering objective |
| 1127 | */ |
| 1128 | private FilteringObjective.Builder createFiltObjective(PortNumber inPort, VlanId innerTag, VlanId outerTag) { |
| 1129 | |
| 1130 | log.info("Creating filtering objective for vlans {} / {}", outerTag, innerTag); |
| 1131 | return DefaultFilteringObjective |
| 1132 | .builder() |
| 1133 | .withKey(Criteria.matchInPort(inPort)) |
| 1134 | .addCondition(Criteria.matchInnerVlanId(innerTag)) |
| 1135 | .addCondition(Criteria.matchVlanId(outerTag)) |
| 1136 | .withPriority(SegmentRoutingService.DEFAULT_PRIORITY) |
| 1137 | .permit() |
| 1138 | .fromApp(srManager.appId()); |
| 1139 | } |
| 1140 | |
| 1141 | /** |
| 1142 | * Creates the forwarding objective for the termination. |
| 1143 | * |
| 1144 | * @param pwLabel the pseudo wire label |
| 1145 | * @param tunnelId the tunnel id |
| 1146 | * @param egressPort the egress port |
| 1147 | * @param nextId the next step |
| 1148 | * @return the forwarding objective to support the termination |
| 1149 | */ |
| 1150 | private ForwardingObjective.Builder createTermFwdObjective(MplsLabel pwLabel, long tunnelId, |
| 1151 | PortNumber egressPort, int nextId) { |
| 1152 | |
| 1153 | TrafficSelector.Builder trafficSelector = DefaultTrafficSelector.builder(); |
| 1154 | TrafficTreatment.Builder trafficTreatment = DefaultTrafficTreatment.builder(); |
| 1155 | // The flow has to match on the pw label and bos |
| 1156 | trafficSelector.matchEthType(Ethernet.MPLS_UNICAST); |
| 1157 | trafficSelector.matchMplsLabel(pwLabel); |
| 1158 | trafficSelector.matchMplsBos(true); |
| 1159 | // The flow has to decrement ttl, restore ttl in |
| 1160 | // pop mpls, set tunnel id and port. |
| 1161 | trafficTreatment.decMplsTtl(); |
| 1162 | trafficTreatment.copyTtlIn(); |
| 1163 | trafficTreatment.popMpls(); |
| 1164 | trafficTreatment.setTunnelId(tunnelId); |
| 1165 | trafficTreatment.setOutput(egressPort); |
| 1166 | |
| 1167 | return DefaultForwardingObjective |
| 1168 | .builder() |
| 1169 | .fromApp(srManager.appId()) |
| 1170 | .makePermanent() |
| 1171 | .nextStep(nextId) |
| 1172 | .withPriority(SegmentRoutingService.DEFAULT_PRIORITY) |
| 1173 | .withSelector(trafficSelector.build()) |
| 1174 | .withTreatment(trafficTreatment.build()) |
| 1175 | .withFlag(VERSATILE); |
| 1176 | } |
| 1177 | |
| 1178 | /** |
| 1179 | * Creates the forwarding objective for the initiation. |
| 1180 | * |
| 1181 | * @param tunnelId the tunnel id |
| 1182 | * @param inPort the input port |
| 1183 | * @param nextId the next step |
| 1184 | * @return the forwarding objective to support the initiation. |
| 1185 | */ |
| 1186 | private ForwardingObjective.Builder createInitFwdObjective(long tunnelId, PortNumber inPort, int nextId) { |
| 1187 | |
| 1188 | TrafficSelector.Builder trafficSelector = DefaultTrafficSelector.builder(); |
| 1189 | |
| 1190 | // The flow has to match on the mpls logical |
| 1191 | // port and the tunnel id. |
| 1192 | trafficSelector.matchTunnelId(tunnelId); |
| 1193 | trafficSelector.matchInPort(inPort); |
| 1194 | |
| 1195 | return DefaultForwardingObjective |
| 1196 | .builder() |
| 1197 | .fromApp(srManager.appId()) |
| 1198 | .makePermanent() |
| 1199 | .nextStep(nextId) |
| 1200 | .withPriority(SegmentRoutingService.DEFAULT_PRIORITY) |
| 1201 | .withSelector(trafficSelector.build()) |
| 1202 | .withFlag(VERSATILE); |
| 1203 | |
| 1204 | } |
| 1205 | |
| 1206 | /** |
| 1207 | * Creates the next objective according to a given |
| 1208 | * pipeline. We don't set the next id and we don't |
| 1209 | * create the final meta to check if we are re-using |
| 1210 | * the same next objective for different tunnels. |
| 1211 | * |
| 1212 | * @param pipeline the pipeline to support |
| 1213 | * @param srcCp the source port |
| 1214 | * @param dstCp the destination port |
| 1215 | * @param l2Tunnel the tunnel to support |
| 1216 | * @param egressId the egress device id |
| 1217 | * @param spinePw if the pw involves a spine switch |
| 1218 | * @return the next objective to support the pipeline |
| 1219 | */ |
| 1220 | private NextObjective.Builder createNextObjective(Pipeline pipeline, ConnectPoint srcCp, |
| 1221 | ConnectPoint dstCp, L2Tunnel l2Tunnel, |
Andreas Pantelopoulos | 1e61db5 | 2018-02-22 17:54:45 -0800 | [diff] [blame] | 1222 | DeviceId egressId, boolean spinePw, VlanId termVlanId) { |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 1223 | NextObjective.Builder nextObjBuilder; |
| 1224 | TrafficTreatment.Builder treatmentBuilder = DefaultTrafficTreatment.builder(); |
| 1225 | if (pipeline == INITIATION) { |
| 1226 | nextObjBuilder = DefaultNextObjective |
| 1227 | .builder() |
| 1228 | .withType(NextObjective.Type.SIMPLE) |
| 1229 | .fromApp(srManager.appId()); |
| 1230 | // The pw label is the bottom of stack. It has to |
| 1231 | // be different -1. |
| 1232 | if (l2Tunnel.pwLabel().toInt() == MplsLabel.MAX_MPLS) { |
| 1233 | log.warn("Pw label not configured"); |
| 1234 | return null; |
| 1235 | } |
| 1236 | treatmentBuilder.pushMpls(); |
| 1237 | treatmentBuilder.setMpls(l2Tunnel.pwLabel()); |
| 1238 | treatmentBuilder.setMplsBos(true); |
| 1239 | treatmentBuilder.copyTtlOut(); |
| 1240 | |
| 1241 | // If the inter-co label is present we have to set the label. |
| 1242 | if (l2Tunnel.interCoLabel().toInt() != MplsLabel.MAX_MPLS) { |
| 1243 | treatmentBuilder.pushMpls(); |
| 1244 | treatmentBuilder.setMpls(l2Tunnel.interCoLabel()); |
| 1245 | treatmentBuilder.setMplsBos(false); |
| 1246 | treatmentBuilder.copyTtlOut(); |
| 1247 | } |
| 1248 | |
| 1249 | // if pw is leaf-to-leaf we need to |
| 1250 | // add the routing label also |
| 1251 | if (!spinePw) { |
| 1252 | // We retrieve the sr label from the config |
| 1253 | // specific for pseudowire traffic |
| 1254 | // using the egress leaf device id. |
| 1255 | MplsLabel srLabel; |
| 1256 | try { |
| 1257 | srLabel = MplsLabel.mplsLabel(srManager.deviceConfiguration().getPWRoutingLabel(egressId)); |
| 1258 | |
| 1259 | } catch (DeviceConfigNotFoundException e) { |
| 1260 | log.warn("Sr label for pw traffic not configured"); |
| 1261 | return null; |
| 1262 | } |
| 1263 | |
| 1264 | treatmentBuilder.pushMpls(); |
| 1265 | treatmentBuilder.setMpls(srLabel); |
| 1266 | treatmentBuilder.setMplsBos(false); |
| 1267 | treatmentBuilder.copyTtlOut(); |
| 1268 | } |
| 1269 | |
| 1270 | // We have to rewrite the src and dst mac address. |
| 1271 | MacAddress ingressMac; |
| 1272 | try { |
| 1273 | ingressMac = srManager.deviceConfiguration().getDeviceMac(srcCp.deviceId()); |
| 1274 | } catch (DeviceConfigNotFoundException e) { |
| 1275 | log.warn("Was not able to find the ingress mac"); |
| 1276 | return null; |
| 1277 | } |
| 1278 | treatmentBuilder.setEthSrc(ingressMac); |
| 1279 | MacAddress neighborMac; |
| 1280 | try { |
| 1281 | neighborMac = srManager.deviceConfiguration().getDeviceMac(dstCp.deviceId()); |
| 1282 | } catch (DeviceConfigNotFoundException e) { |
| 1283 | log.warn("Was not able to find the neighbor mac"); |
| 1284 | return null; |
| 1285 | } |
| 1286 | treatmentBuilder.setEthDst(neighborMac); |
| 1287 | |
| 1288 | // if not a leaf-spine pw we need to POP the vlan at the output |
| 1289 | // since we carry this traffic untagged. |
| 1290 | if (!spinePw) { |
| 1291 | treatmentBuilder.popVlan(); |
| 1292 | } |
Andreas Pantelopoulos | 1e61db5 | 2018-02-22 17:54:45 -0800 | [diff] [blame] | 1293 | |
| 1294 | // set the appropriate transport vlan |
| 1295 | treatmentBuilder.setVlanId(l2Tunnel.transportVlan()); |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 1296 | } else { |
| 1297 | // We create the next objective which |
| 1298 | // will be a simple l2 group. |
| 1299 | nextObjBuilder = DefaultNextObjective |
| 1300 | .builder() |
| 1301 | .withType(NextObjective.Type.SIMPLE) |
| 1302 | .fromApp(srManager.appId()); |
Andreas Pantelopoulos | 1e61db5 | 2018-02-22 17:54:45 -0800 | [diff] [blame] | 1303 | |
| 1304 | // for termination point we use the outer vlan of the |
| 1305 | // encapsulated packet |
| 1306 | treatmentBuilder.setVlanId(termVlanId); |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 1307 | } |
| 1308 | |
Andreas Pantelopoulos | b21547d | 2018-02-22 12:32:42 -0800 | [diff] [blame] | 1309 | treatmentBuilder.setOutput(srcCp.port()); |
| 1310 | nextObjBuilder.addTreatment(treatmentBuilder.build()); |
| 1311 | return nextObjBuilder; |
| 1312 | } |
| 1313 | |
| 1314 | /** |
| 1315 | * Reverses a link. |
| 1316 | * |
| 1317 | * @param link link to be reversed |
| 1318 | * @return the reversed link |
| 1319 | */ |
| 1320 | private Link reverseLink(Link link) { |
| 1321 | |
| 1322 | DefaultLink.Builder linkBuilder = DefaultLink.builder(); |
| 1323 | |
| 1324 | linkBuilder.src(link.dst()); |
| 1325 | linkBuilder.dst(link.src()); |
| 1326 | linkBuilder.type(link.type()); |
| 1327 | linkBuilder.providerId(link.providerId()); |
| 1328 | |
| 1329 | return linkBuilder.build(); |
| 1330 | } |
| 1331 | |
| 1332 | /** |
| 1333 | * Returns the path betwwen two connect points. |
| 1334 | * |
| 1335 | * @param srcCp source connect point |
| 1336 | * @param dstCp destination connect point |
| 1337 | * @return the path |
| 1338 | */ |
| 1339 | private List<Link> getPath(ConnectPoint srcCp, ConnectPoint dstCp) { |
| 1340 | /* TODO We retrieve a set of paths in case of a link failure, what happens |
| 1341 | * if the TopologyService gets the link notification AFTER us and has not updated the paths? |
| 1342 | * |
| 1343 | * TODO This has the potential to act on old topology. |
| 1344 | * Maybe we should make SRManager be a listener on topology events instead raw link events. |
| 1345 | */ |
| 1346 | Set<Path> paths = srManager.topologyService.getPaths( |
| 1347 | srManager.topologyService.currentTopology(), |
| 1348 | srcCp.deviceId(), dstCp.deviceId()); |
| 1349 | |
| 1350 | log.debug("Paths obtained from topology service {}", paths); |
| 1351 | |
| 1352 | // We randomly pick a path. |
| 1353 | if (paths.isEmpty()) { |
| 1354 | return null; |
| 1355 | } |
| 1356 | int size = paths.size(); |
| 1357 | int index = RandomUtils.nextInt(0, size); |
| 1358 | |
| 1359 | List<Link> result = Iterables.get(paths, index).links(); |
| 1360 | log.debug("Randomly picked a path {}", result); |
| 1361 | |
| 1362 | return result; |
| 1363 | } |
| 1364 | |
| 1365 | /** |
| 1366 | * Deletes a given policy using the parameter supplied. |
| 1367 | * |
| 1368 | * @param tunnelId the tunnel id |
| 1369 | * @param ingress the ingress point |
| 1370 | * @param ingressInner the ingress inner vlan id |
| 1371 | * @param ingressOuter the ingress outer vlan id |
| 1372 | * @param future to perform the async operation |
| 1373 | * @param direction the direction: forward or reverse |
| 1374 | */ |
| 1375 | private void deletePolicy(long tunnelId, ConnectPoint ingress, VlanId ingressInner, VlanId ingressOuter, |
| 1376 | VlanId egressVlan, CompletableFuture<ObjectiveError> future, Direction direction) { |
| 1377 | |
| 1378 | String key = generateKey(tunnelId, direction); |
| 1379 | if (!l2InitiationNextObjStore.containsKey(key)) { |
| 1380 | log.warn("Abort delete of policy for tunnel {}: next does not exist in the store", tunnelId); |
| 1381 | if (future != null) { |
| 1382 | future.complete(null); |
| 1383 | } |
| 1384 | return; |
| 1385 | } |
| 1386 | NextObjective nextObjective = l2InitiationNextObjStore.get(key).value(); |
| 1387 | int nextId = nextObjective.id(); |
| 1388 | List<Objective> objectives = Lists.newArrayList(); |
| 1389 | // We create the forwarding objective. |
| 1390 | ForwardingObjective.Builder fwdBuilder = createInitFwdObjective(tunnelId, ingress.port(), nextId); |
| 1391 | ObjectiveContext context = new ObjectiveContext() { |
| 1392 | @Override |
| 1393 | public void onSuccess(Objective objective) { |
| 1394 | log.debug("Previous fwdObj for policy {} removed", tunnelId); |
| 1395 | if (future != null) { |
| 1396 | future.complete(null); |
| 1397 | } |
| 1398 | } |
| 1399 | |
| 1400 | @Override |
| 1401 | public void onError(Objective objective, ObjectiveError error) { |
| 1402 | log.warn("Failed to remove previous fwdObj for policy {}: {}", tunnelId, error); |
| 1403 | if (future != null) { |
| 1404 | future.complete(error); |
| 1405 | } |
| 1406 | } |
| 1407 | }; |
| 1408 | objectives.add(fwdBuilder.remove(context)); |
| 1409 | // We create the filtering objective to define the |
| 1410 | // permit traffic in the switch |
| 1411 | FilteringObjective.Builder filtBuilder = createFiltObjective(ingress.port(), ingressInner, ingressOuter); |
| 1412 | TrafficTreatment.Builder treatment = DefaultTrafficTreatment |
| 1413 | .builder() |
| 1414 | .setTunnelId(tunnelId) |
| 1415 | .setVlanId(egressVlan); |
| 1416 | filtBuilder.withMeta(treatment.build()); |
| 1417 | context = new DefaultObjectiveContext((objective) -> log.debug("FilterObj for policy {} revoked", tunnelId), |
| 1418 | (objective, error) -> |
| 1419 | log.warn("Failed to revoke filterObj for policy {}", |
| 1420 | tunnelId, error)); |
| 1421 | objectives.add(filtBuilder.remove(context)); |
| 1422 | |
| 1423 | for (Objective objective : objectives) { |
| 1424 | if (objective instanceof ForwardingObjective) { |
| 1425 | srManager.flowObjectiveService.forward(ingress.deviceId(), (ForwardingObjective) objective); |
| 1426 | } else { |
| 1427 | srManager.flowObjectiveService.filter(ingress.deviceId(), (FilteringObjective) objective); |
| 1428 | } |
| 1429 | } |
| 1430 | } |
| 1431 | |
| 1432 | /** |
| 1433 | * Deletes the pseudo wire initiation. |
| 1434 | * |
| 1435 | * @param l2TunnelId the tunnel id |
| 1436 | * @param ingress the ingress connect point |
| 1437 | * @param future to perform an async operation |
| 1438 | * @param direction the direction: reverse of forward |
| 1439 | */ |
| 1440 | private void tearDownPseudoWireInit(long l2TunnelId, ConnectPoint ingress, |
| 1441 | CompletableFuture<ObjectiveError> future, Direction direction) { |
| 1442 | |
| 1443 | String key = generateKey(l2TunnelId, direction); |
| 1444 | if (!l2InitiationNextObjStore.containsKey(key)) { |
| 1445 | log.info("Abort delete of {} for {}: next does not exist in the store", INITIATION, key); |
| 1446 | if (future != null) { |
| 1447 | future.complete(null); |
| 1448 | } |
| 1449 | return; |
| 1450 | } |
| 1451 | NextObjective nextObjective = l2InitiationNextObjStore.get(key).value(); |
| 1452 | |
| 1453 | // un-comment in case you want to delete groups used by the pw |
| 1454 | // however, this will break the update of pseudowires cause the L2 interface group can |
| 1455 | // not be deleted (it is referenced by other groups) |
| 1456 | /* |
| 1457 | ObjectiveContext context = new ObjectiveContext() { |
| 1458 | @Override |
| 1459 | public void onSuccess(Objective objective) { |
| 1460 | log.debug("Previous {} next for {} removed", INITIATION, key); |
| 1461 | if (future != null) { |
| 1462 | future.complete(null); |
| 1463 | } |
| 1464 | } |
| 1465 | |
| 1466 | @Override |
| 1467 | public void onError(Objective objective, ObjectiveError error) { |
| 1468 | log.warn("Failed to remove previous {} next for {}: {}", INITIATION, key, error); |
| 1469 | if (future != null) { |
| 1470 | future.complete(error); |
| 1471 | } |
| 1472 | } |
| 1473 | }; |
| 1474 | srManager.flowObjectiveService.next(ingress.deviceId(), (NextObjective) nextObjective.copy().remove(context)); |
| 1475 | */ |
| 1476 | |
| 1477 | future.complete(null); |
| 1478 | l2InitiationNextObjStore.remove(key); |
| 1479 | } |
| 1480 | |
| 1481 | /** |
| 1482 | * Deletes the pseudo wire termination. |
| 1483 | * |
| 1484 | * @param l2Tunnel the tunnel |
| 1485 | * @param egress the egress connect point |
| 1486 | * @param future the async task |
| 1487 | * @param direction the direction of the tunnel |
| 1488 | */ |
| 1489 | private void tearDownPseudoWireTerm(L2Tunnel l2Tunnel, |
| 1490 | ConnectPoint egress, |
| 1491 | CompletableFuture<ObjectiveError> future, |
| 1492 | Direction direction) { |
| 1493 | |
| 1494 | String key = generateKey(l2Tunnel.tunnelId(), direction); |
| 1495 | if (!l2TerminationNextObjStore.containsKey(key)) { |
| 1496 | log.info("Abort delete of {} for {}: next does not exist in the store", TERMINATION, key); |
| 1497 | if (future != null) { |
| 1498 | future.complete(null); |
| 1499 | } |
| 1500 | return; |
| 1501 | } |
| 1502 | NextObjective nextObjective = l2TerminationNextObjStore.get(key).value(); |
| 1503 | ForwardingObjective.Builder fwdBuilder = createTermFwdObjective(l2Tunnel.pwLabel(), |
| 1504 | l2Tunnel.tunnelId(), |
| 1505 | egress.port(), |
| 1506 | nextObjective.id()); |
| 1507 | ObjectiveContext context = new DefaultObjectiveContext((objective) -> |
| 1508 | log.debug("FwdObj for {} {}, " + |
| 1509 | "direction {} removed", |
| 1510 | TERMINATION, |
| 1511 | l2Tunnel.tunnelId(), |
| 1512 | direction), |
| 1513 | (objective, error) -> |
| 1514 | log.warn("Failed to remove fwdObj " + |
| 1515 | "for {} {}" + |
| 1516 | ", direction {}", |
| 1517 | TERMINATION, |
| 1518 | l2Tunnel.tunnelId(), |
| 1519 | error, |
| 1520 | direction)); |
| 1521 | srManager.flowObjectiveService.forward(egress.deviceId(), fwdBuilder.remove(context)); |
| 1522 | |
| 1523 | // un-comment in case you want to delete groups used by the pw |
| 1524 | // however, this will break the update of pseudowires cause the L2 interface group can |
| 1525 | // not be deleted (it is referenced by other groups) |
| 1526 | /* |
| 1527 | context = new ObjectiveContext() { |
| 1528 | @Override |
| 1529 | public void onSuccess(Objective objective) { |
| 1530 | log.debug("Previous {} next for {} removed", TERMINATION, key); |
| 1531 | if (future != null) { |
| 1532 | future.complete(null); |
| 1533 | } |
| 1534 | } |
| 1535 | |
| 1536 | @Override |
| 1537 | public void onError(Objective objective, ObjectiveError error) { |
| 1538 | log.warn("Failed to remove previous {} next for {}: {}", TERMINATION, key, error); |
| 1539 | if (future != null) { |
| 1540 | future.complete(error); |
| 1541 | } |
| 1542 | } |
| 1543 | }; |
| 1544 | srManager.flowObjectiveService.next(egress.deviceId(), (NextObjective) nextObjective.copy().remove(context)); |
| 1545 | */ |
| 1546 | |
| 1547 | // delete the extra filtering objective for terminating |
| 1548 | // spine-spine pws |
| 1549 | if (!l2Tunnel.transportVlan().equals(UNTAGGED_TRANSPORT_VLAN)) { |
| 1550 | |
| 1551 | // determine the input port at the |
| 1552 | PortNumber inPort; |
| 1553 | |
| 1554 | if (egress.deviceId(). |
| 1555 | equals(l2Tunnel.pathUsed().get(0).dst().deviceId())) { |
| 1556 | inPort = l2Tunnel.pathUsed().get(0).dst().port(); |
| 1557 | } else { |
| 1558 | inPort = l2Tunnel.pathUsed().get(0).src().port(); |
| 1559 | } |
| 1560 | |
| 1561 | MacAddress dstMac; |
| 1562 | try { |
| 1563 | dstMac = srManager.deviceConfiguration().getDeviceMac(egress.deviceId()); |
| 1564 | } catch (Exception e) { |
| 1565 | log.info("Device not found in configuration, no programming of MAC address"); |
| 1566 | dstMac = null; |
| 1567 | } |
| 1568 | |
| 1569 | log.info("Removing filtering objective for pseudowire transport" + |
| 1570 | " with vlan = {}, port = {}, mac = {}", |
| 1571 | l2Tunnel.transportVlan(), |
| 1572 | inPort, |
| 1573 | dstMac); |
| 1574 | FilteringObjective.Builder filteringObjectiveBuilder = |
| 1575 | createNormalPipelineFiltObjective(inPort, l2Tunnel.transportVlan(), dstMac); |
| 1576 | context = new DefaultObjectiveContext(( objective ) -> |
| 1577 | log.debug("Special filtObj for " + "for {} removed", |
| 1578 | l2Tunnel.tunnelId()), ( objective, error ) -> |
| 1579 | log.warn("Failed to populate " + "special filtObj " + |
| 1580 | "rule for {}: {}", l2Tunnel.tunnelId(), error)); |
| 1581 | TrafficTreatment.Builder treatment = DefaultTrafficTreatment.builder(); |
| 1582 | filteringObjectiveBuilder.withMeta(treatment.build()); |
| 1583 | srManager.flowObjectiveService.filter(egress.deviceId(), filteringObjectiveBuilder.remove(context)); |
| 1584 | log.debug("Removing special FiltObj for termination point with tunnel {} for port {}", |
| 1585 | l2Tunnel.tunnelId(), |
| 1586 | inPort); |
| 1587 | } |
| 1588 | |
| 1589 | l2TerminationNextObjStore.remove(key); |
| 1590 | future.complete(null); |
| 1591 | } |
| 1592 | |
| 1593 | /** |
| 1594 | * Utilities to generate pw key. |
| 1595 | * |
| 1596 | * @param tunnelId the tunnel id |
| 1597 | * @param direction the direction of the pw |
| 1598 | * @return the key of the store |
| 1599 | */ |
| 1600 | private String generateKey(long tunnelId, Direction direction) { |
| 1601 | return String.format("%s-%s", tunnelId, direction); |
| 1602 | } |
| 1603 | |
| 1604 | } |