elanmanager/impl/src/main/java/org/opendaylight/netvirt/elan/internal/ElanNodeListener.java

   1 /*
   2  * Copyright (c) 2016, 2017 Ericsson India Global Services Pvt Ltd. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.netvirt.elan.internal;
   9
  10 import static org.opendaylight.infrautils.utils.concurrent.LoggingFutures.addErrorLogging;
  11 import static org.opendaylight.mdsal.binding.util.Datastore.CONFIGURATION;
  12
  13 import java.math.BigInteger;
  14 import java.time.Duration;
  15 import java.util.ArrayList;
  16 import java.util.Arrays;
  17 import java.util.Collections;
  18 import java.util.List;
  19 import java.util.concurrent.ExecutionException;
  20 import javax.annotation.PreDestroy;
  21 import javax.inject.Inject;
  22 import javax.inject.Singleton;
  23 import org.opendaylight.genius.datastoreutils.listeners.DataTreeEventCallbackRegistrar;
  24 import org.opendaylight.genius.mdsalutil.ActionInfo;
  25 import org.opendaylight.genius.mdsalutil.BucketInfo;
  26 import org.opendaylight.genius.mdsalutil.FlowEntity;
  27 import org.opendaylight.genius.mdsalutil.GroupEntity;
  28 import org.opendaylight.genius.mdsalutil.InstructionInfo;
  29 import org.opendaylight.genius.mdsalutil.MDSALUtil;
  30 import org.opendaylight.genius.mdsalutil.MatchInfo;
  31 import org.opendaylight.genius.mdsalutil.MatchInfoBase;
  32 import org.opendaylight.genius.mdsalutil.MetaDataUtil;
  33 import org.opendaylight.genius.mdsalutil.NwConstants;
  34 import org.opendaylight.genius.mdsalutil.NwConstants.NxmOfFieldType;
  35 import org.opendaylight.genius.mdsalutil.actions.ActionDrop;
  36 import org.opendaylight.genius.mdsalutil.actions.ActionGroup;
  37 import org.opendaylight.genius.mdsalutil.actions.ActionLearn;
  38 import org.opendaylight.genius.mdsalutil.actions.ActionLearn.CopyFromValue;
  39 import org.opendaylight.genius.mdsalutil.actions.ActionLearn.MatchFromField;
  40 import org.opendaylight.genius.mdsalutil.actions.ActionLearn.MatchFromValue;
  41 import org.opendaylight.genius.mdsalutil.actions.ActionNxResubmit;
  42 import org.opendaylight.genius.mdsalutil.actions.ActionPuntToController;
  43 import org.opendaylight.genius.mdsalutil.actions.ActionRegLoad;
  44 import org.opendaylight.genius.mdsalutil.instructions.InstructionApplyActions;
  45 import org.opendaylight.genius.mdsalutil.instructions.InstructionGotoTable;
  46 import org.opendaylight.genius.mdsalutil.interfaces.IMdsalApiManager;
  47 import org.opendaylight.genius.mdsalutil.matches.MatchArpOp;
  48 import org.opendaylight.genius.mdsalutil.matches.MatchEthernetDestination;
  49 import org.opendaylight.genius.mdsalutil.matches.MatchEthernetType;
  50 import org.opendaylight.genius.mdsalutil.nxmatches.NxMatchRegister;
  51 import org.opendaylight.infrautils.jobcoordinator.JobCoordinator;
  52 import org.opendaylight.infrautils.utils.concurrent.Executors;
  53 import org.opendaylight.infrautils.utils.concurrent.LoggingFutures;
  54 import org.opendaylight.mdsal.binding.api.DataBroker;
  55 import org.opendaylight.mdsal.binding.util.Datastore.Configuration;
  56 import org.opendaylight.mdsal.binding.util.ManagedNewTransactionRunner;
  57 import org.opendaylight.mdsal.binding.util.ManagedNewTransactionRunnerImpl;
  58 import org.opendaylight.mdsal.binding.util.TypedReadWriteTransaction;
  59 import org.opendaylight.mdsal.binding.util.TypedWriteTransaction;
  60 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  61 import org.opendaylight.netvirt.elan.arp.responder.ArpResponderConstant;
  62 import org.opendaylight.netvirt.elan.arp.responder.ArpResponderUtil;
  63 import org.opendaylight.netvirt.elan.utils.ElanConstants;
  64 import org.opendaylight.netvirt.elan.utils.ElanUtils;
  65 import org.opendaylight.serviceutils.tools.listener.AbstractAsyncDataTreeChangeListener;
  66 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.MacAddress;
  67 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.IdManagerService;
  68 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.GroupTypes;
  69 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.Group;
  70 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
  71 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  72 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  73 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.config.rev150710.ElanConfig;
  74 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.match.rev140421.NxmNxReg4;
  75 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  76 import org.opendaylight.yangtools.yang.common.Uint64;
  77 import org.slf4j.Logger;
  78 import org.slf4j.LoggerFactory;
  79
  80 @Singleton
  81 public class ElanNodeListener extends AbstractAsyncDataTreeChangeListener<Node> {
  82
  83     private static final Logger LOG = LoggerFactory.getLogger(ElanNodeListener.class);
  84     private static final int LEARN_MATCH_REG4_VALUE = 1;
  85     private static final int ARP_LEARN_FLOW_PRIORITY = 10;
  86     private static final int ARP_LEARN_MATCH_VALUE = 0x1;
  87     private static final int GARP_LEARN_MATCH_VALUE = 0x101;
  88     private static final long ARP_LEARN_MATCH_MASK = 0xFFFFL;
  89
  90     private final DataBroker broker;
  91     private final ManagedNewTransactionRunner txRunner;
  92     private final IMdsalApiManager mdsalManager;
  93     private final IdManagerService idManagerService;
  94     private final int tempSmacLearnTimeout;
  95     private final int arpPuntTimeout;
  96     private final boolean puntLldpToController;
  97     private final JobCoordinator jobCoordinator;
  98     private final DataTreeEventCallbackRegistrar eventCallbacks;
  99
 100     @Inject
 101     public ElanNodeListener(DataBroker dataBroker, IMdsalApiManager mdsalManager, ElanConfig elanConfig,
 102             IdManagerService idManagerService, JobCoordinator jobCoordinator,
 103             DataTreeEventCallbackRegistrar eventCallbacks) {
 104         super(dataBroker, LogicalDatastoreType.OPERATIONAL, InstanceIdentifier.create(Nodes.class).child(Node.class),
 105                 Executors.newListeningSingleThreadExecutor("ElanNodeListener", LOG));
 106         this.broker = dataBroker;
 107         this.txRunner = new ManagedNewTransactionRunnerImpl(dataBroker);
 108         this.mdsalManager = mdsalManager;
 109         this.tempSmacLearnTimeout = elanConfig.getTempSmacLearnTimeout().toJava();
 110         this.arpPuntTimeout = elanConfig.getArpPuntTimeout().intValue();
 111         this.puntLldpToController = elanConfig.isPuntLldpToController();
 112         this.idManagerService = idManagerService;
 113         this.jobCoordinator = jobCoordinator;
 114         this.eventCallbacks = eventCallbacks;
 115     }
 116
 117     public void init() {
 118         LOG.info("{} registered", getClass().getSimpleName());
 119     }
 120
 121     @Override
 122     @PreDestroy
 123     public void close() {
 124         super.close();
 125         Executors.shutdownAndAwaitTermination(getExecutorService());
 126     }
 127
 128     @Override
 129     public void remove(InstanceIdentifier<Node> identifier, Node del) {
 130     }
 131
 132     @Override
 133     public void update(InstanceIdentifier<Node> identifier, Node original, Node update) {
 134     }
 135
 136     @Override
 137     public void add(InstanceIdentifier<Node> identifier, Node add) {
 138         NodeId nodeId = add.getId();
 139         String[] node = nodeId.getValue().split(":");
 140         if (node.length < 2) {
 141             LOG.warn("Unexpected nodeId {}", nodeId.getValue());
 142             return;
 143         }
 144         addErrorLogging(txRunner.callWithNewWriteOnlyTransactionAndSubmit(CONFIGURATION, tx -> {
 145             Uint64 dpId = Uint64.valueOf(node[1]);
 146             createTableMissEntry(tx, dpId);
 147             createMulticastFlows(tx, dpId);
 148             createArpDefaultFlowsForArpCheckTable(dpId);
 149         }), LOG, "Error handling ELAN node addition for {}", add);
 150     }
 151
 152     private void createArpDefaultFlowsForArpCheckTable(Uint64 dpId) {
 153
 154         jobCoordinator.enqueueJob("ARP_CHECK_TABLE-" + dpId.toString(),
 155             () -> Collections.singletonList(txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION, tx -> {
 156                 try {
 157                     LOG.debug("Received notification to install Arp Check Default entries for dpn {} ", dpId);
 158                     createArpRequestMatchFlows(dpId, tx);
 159                     createArpResponseMatchFlows(dpId, tx);
 160                     createArpPuntAndLearnFlow(dpId, tx);
 161                     addGarpLearnMatchFlow(dpId, tx);
 162                     addArpLearnMatchFlow(dpId, tx);
 163                 } catch (InterruptedException | ExecutionException e) {
 164                     LOG.error("Error programming ARP rules for dpn {}", dpId, e);
 165                 }
 166             })));
 167     }
 168
 169     public void createTableMissEntry(TypedWriteTransaction<Configuration> tx, Uint64 dpnId) {
 170         setupTableMissSmacFlow(tx, dpnId);
 171         setupTableMissDmacFlow(tx, dpnId);
 172         setupTableMissArpCheckFlow(tx, dpnId);
 173         setupTableMissApResponderFlow(tx, dpnId);
 174         setupExternalL2vniTableMissFlow(tx, dpnId);
 175     }
 176
 177     private void createMulticastFlows(TypedWriteTransaction<Configuration> tx, Uint64 dpId) {
 178         createL2ControlProtocolDropFlows(tx, dpId);
 179         createMulticastPuntFlows(tx, dpId);
 180     }
 181
 182     private void createMulticastPuntFlows(TypedWriteTransaction<Configuration> tx, Uint64 dpId) {
 183         if (puntLldpToController) {
 184             createLldpFlows(tx, dpId);
 185         }
 186     }
 187
 188     private void createLldpFlows(TypedWriteTransaction<Configuration> tx, Uint64 dpId) {
 189         createLldpFlow(tx, dpId, ElanConstants.LLDP_DST_1, "LLDP dMac Table Flow 1");
 190         createLldpFlow(tx, dpId, ElanConstants.LLDP_DST_2, "LLDP dMac Table Flow 2");
 191         createLldpFlow(tx, dpId, ElanConstants.LLDP_DST_3, "LLDP dMac Table Flow 3");
 192     }
 193
 194     private void createLldpFlow(TypedWriteTransaction<Configuration> tx, Uint64 dpId, String dstMac,
 195             String flowName) {
 196         List<MatchInfo> mkMatches = new ArrayList<>();
 197         mkMatches.add(new MatchEthernetType(ElanConstants.LLDP_ETH_TYPE));
 198         mkMatches.add(new MatchEthernetDestination(new MacAddress(dstMac)));
 199
 200         List<ActionInfo> listActionInfo = new ArrayList<>();
 201         listActionInfo.add(new ActionPuntToController());
 202
 203         List<InstructionInfo> mkInstructions = new ArrayList<>();
 204         mkInstructions.add(new InstructionApplyActions(listActionInfo));
 205
 206         String flowId = dpId.toString() + NwConstants.ELAN_DMAC_TABLE + "lldp" + ElanConstants.LLDP_ETH_TYPE + dstMac;
 207         FlowEntity lldpFlow = MDSALUtil.buildFlowEntity(dpId, NwConstants.ELAN_DMAC_TABLE, flowId, 16, flowName, 0, 0,
 208                 ElanConstants.COOKIE_ELAN_KNOWN_DMAC, mkMatches, mkInstructions);
 209
 210         mdsalManager.addFlow(tx, lldpFlow);
 211     }
 212
 213     private void setupTableMissSmacFlow(TypedWriteTransaction<Configuration> tx, Uint64 dpId) {
 214         List<ActionInfo> actionsInfos = new ArrayList<>();
 215         actionsInfos.add(new ActionPuntToController());
 216         actionsInfos.add(new ActionLearn(0, tempSmacLearnTimeout, 0, ElanConstants.COOKIE_ELAN_LEARNED_SMAC, 0,
 217                 NwConstants.ELAN_SMAC_LEARNED_TABLE, 0, 0,
 218                 Arrays.asList(
 219                         new ActionLearn.MatchFromField(NwConstants.NxmOfFieldType.NXM_OF_ETH_SRC.getType(),
 220                                 NwConstants.NxmOfFieldType.NXM_OF_ETH_SRC.getType(),
 221                                 NwConstants.NxmOfFieldType.NXM_OF_ETH_SRC.getFlowModHeaderLenInt()),
 222                         new ActionLearn.MatchFromField(NwConstants.NxmOfFieldType.NXM_NX_REG1.getType(),
 223                                 NwConstants.NxmOfFieldType.NXM_NX_REG1.getType(), ElanConstants.INTERFACE_TAG_LENGTH),
 224                         new ActionLearn.CopyFromValue(LEARN_MATCH_REG4_VALUE,
 225                                 NwConstants.NxmOfFieldType.NXM_NX_REG4.getType(), 8))));
 226
 227         List<InstructionInfo> mkInstructions = new ArrayList<>();
 228         mkInstructions.add(new InstructionApplyActions(actionsInfos));
 229         mkInstructions.add(new InstructionGotoTable(NwConstants.ELAN_DMAC_TABLE));
 230
 231         List<MatchInfo> mkMatches = new ArrayList<>();
 232         FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.ELAN_SMAC_TABLE,
 233                 getTableMissFlowRef(NwConstants.ELAN_SMAC_TABLE), 0, "ELAN sMac Table Miss Flow", 0, 0,
 234                 ElanConstants.COOKIE_ELAN_KNOWN_SMAC, mkMatches, mkInstructions);
 235         mdsalManager.addFlow(tx, flowEntity);
 236
 237         addSmacBaseTableFlow(tx, dpId);
 238         addSmacLearnedTableFlow(tx, dpId);
 239     }
 240
 241     private void addSmacBaseTableFlow(TypedWriteTransaction<Configuration> tx, Uint64 dpId) {
 242         // T48 - resubmit to T49 & T50
 243         List<ActionInfo> actionsInfo = new ArrayList<>();
 244         actionsInfo.add(new ActionNxResubmit(NwConstants.ELAN_SMAC_LEARNED_TABLE));
 245         actionsInfo.add(new ActionNxResubmit(NwConstants.ELAN_SMAC_TABLE));
 246         List<InstructionInfo> mkInstruct = new ArrayList<>();
 247         mkInstruct.add(new InstructionApplyActions(actionsInfo));
 248         List<MatchInfo> mkMatch = new ArrayList<>();
 249         FlowEntity doubleResubmitTable = MDSALUtil.buildFlowEntity(dpId, NwConstants.ELAN_BASE_TABLE,
 250                 getTableMissFlowRef(NwConstants.ELAN_BASE_TABLE), 0, "Elan sMac resubmit table", 0, 0,
 251                 ElanConstants.COOKIE_ELAN_BASE_SMAC, mkMatch, mkInstruct);
 252         mdsalManager.addFlow(tx, doubleResubmitTable);
 253     }
 254
 255     private void addSmacLearnedTableFlow(TypedWriteTransaction<Configuration> tx, Uint64 dpId) {
 256         // T50 - match on Reg4 and goto T51
 257         List<MatchInfoBase> mkMatches = new ArrayList<>();
 258         mkMatches.add(new NxMatchRegister(NxmNxReg4.class, LEARN_MATCH_REG4_VALUE));
 259         List<InstructionInfo> mkInstructions = new ArrayList<>();
 260         mkInstructions.add(new InstructionGotoTable(NwConstants.ELAN_DMAC_TABLE));
 261         String flowRef = new StringBuilder().append(NwConstants.ELAN_SMAC_TABLE).append(NwConstants.FLOWID_SEPARATOR)
 262                 .append(LEARN_MATCH_REG4_VALUE).toString();
 263         FlowEntity flowEntity =
 264                 MDSALUtil.buildFlowEntity(dpId, NwConstants.ELAN_SMAC_TABLE, flowRef, 10, "ELAN sMac Table Reg4 Flow",
 265                         0, 0, Uint64.valueOf(ElanConstants.COOKIE_ELAN_KNOWN_SMAC.toJava()
 266                             .add(BigInteger.valueOf(LEARN_MATCH_REG4_VALUE))),
 267                         mkMatches, mkInstructions);
 268         mdsalManager.addFlow(tx, flowEntity);
 269     }
 270
 271     private void setupTableMissDmacFlow(TypedWriteTransaction<Configuration> tx, Uint64 dpId) {
 272         List<MatchInfo> mkMatches = new ArrayList<>();
 273
 274         List<InstructionInfo> mkInstructions = new ArrayList<>();
 275         mkInstructions.add(new InstructionGotoTable(NwConstants.ELAN_UNKNOWN_DMAC_TABLE));
 276
 277         FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.ELAN_DMAC_TABLE,
 278                 getTableMissFlowRef(NwConstants.ELAN_DMAC_TABLE), 0, "ELAN dMac Table Miss Flow", 0, 0,
 279                 ElanConstants.COOKIE_ELAN_KNOWN_DMAC, mkMatches, mkInstructions);
 280
 281         mdsalManager.addFlow(tx, flowEntity);
 282     }
 283
 284     private void setupExternalL2vniTableMissFlow(TypedWriteTransaction<Configuration> tx, Uint64 dpnId) {
 285         List<MatchInfo> matches = new ArrayList<>();
 286         List<ActionInfo> actionsInfos = Collections.singletonList(new ActionNxResubmit(NwConstants
 287                         .LPORT_DISPATCHER_TABLE));
 288         List<InstructionInfo> instructions = Collections.singletonList(new InstructionApplyActions(actionsInfos));
 289         FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpnId, NwConstants.L2VNI_EXTERNAL_TUNNEL_DEMUX_TABLE,
 290                         getTableMissFlowRef(NwConstants.L2VNI_EXTERNAL_TUNNEL_DEMUX_TABLE), 0,
 291                         "External L2VNI Table Miss Flow", 0, 0,
 292                          ElanConstants.COOKIE_L2VNI_DEMUX, matches, instructions);
 293         mdsalManager.addFlow(tx, flowEntity);
 294     }
 295
 296
 297     private void createL2ControlProtocolDropFlows(TypedWriteTransaction<Configuration> tx, Uint64 dpId) {
 298         List<MatchInfo> mkMatches = new ArrayList<>();
 299         MatchEthernetDestination matchEthDst =
 300                 new MatchEthernetDestination(new MacAddress(ElanConstants.L2_CONTROL_PACKETS_DMAC),
 301                         new MacAddress(ElanConstants.L2_CONTROL_PACKETS_DMAC_MASK));
 302
 303         mkMatches.add(matchEthDst);
 304
 305         List<ActionInfo> listActionInfo = new ArrayList<>();
 306         listActionInfo.add(new ActionDrop());
 307
 308         List<InstructionInfo> mkInstructions = new ArrayList<>();
 309         mkInstructions.add(new InstructionApplyActions(listActionInfo));
 310
 311         String flowId = dpId.toString() + NwConstants.ELAN_DMAC_TABLE + "l2control"
 312                 + ElanConstants.L2_CONTROL_PACKETS_DMAC + ElanConstants.L2_CONTROL_PACKETS_DMAC_MASK;
 313         FlowEntity flow = MDSALUtil.buildFlowEntity(dpId, NwConstants.ELAN_DMAC_TABLE, flowId, 15,
 314                 "L2 control packets dMac Table Flow", 0, 0, ElanConstants.COOKIE_ELAN_KNOWN_DMAC, mkMatches,
 315                 mkInstructions);
 316
 317         mdsalManager.addFlow(tx, flow);
 318     }
 319
 320     private static String getTableMissFlowRef(long tableId) {
 321         return String.valueOf(tableId);
 322     }
 323
 324     private void setupTableMissApResponderFlow(TypedWriteTransaction<Configuration> tx, final Uint64 dpnId) {
 325         mdsalManager.addFlow(tx, ArpResponderUtil.getArpResponderTableMissFlow(dpnId));
 326     }
 327
 328     private void setupTableMissArpCheckFlow(TypedWriteTransaction<Configuration> tx, Uint64 dpnId) {
 329         mdsalManager.addFlow(tx,
 330                 MDSALUtil.buildFlowEntity(dpnId, NwConstants.ARP_CHECK_TABLE,
 331                         String.valueOf("L2.ELAN." + NwConstants.ARP_CHECK_TABLE), NwConstants.TABLE_MISS_PRIORITY,
 332                         ArpResponderConstant.DROP_FLOW_NAME.value(), 0, 0, NwConstants.COOKIE_ARP_RESPONDER,
 333                         new ArrayList<MatchInfo>(),
 334                         Collections.singletonList(new InstructionGotoTable(NwConstants.ELAN_BASE_TABLE))));
 335     }
 336
 337     private void createArpRequestMatchFlows(Uint64 dpId, TypedReadWriteTransaction<Configuration> tx)
 338             throws ExecutionException, InterruptedException {
 339         long arpRequestGroupId = ArpResponderUtil.retrieveStandardArpResponderGroupId(idManagerService);
 340         List<BucketInfo> buckets = ArpResponderUtil.getDefaultBucketInfos(NwConstants.ARP_RESPONDER_TABLE);
 341         LOG.trace("Installing group flow on dpn {}", dpId);
 342         GroupEntity groupEntity =
 343             MDSALUtil.buildGroupEntity(dpId, arpRequestGroupId, ArpResponderConstant.GROUP_FLOW_NAME.value(),
 344                 GroupTypes.GroupAll, buckets);
 345         mdsalManager.addGroup(tx, groupEntity);
 346         InstanceIdentifier<Group> groupIid = ElanUtils.getGroupInstanceid(dpId, arpRequestGroupId);
 347         if (tx.read(groupIid).get().isPresent()) {
 348             LOG.info("group {} is present in the config hence adding the flow", arpRequestGroupId);
 349             createArpRequestMatchFlowsForGroup(dpId, arpRequestGroupId,tx);
 350             return;
 351         }
 352         eventCallbacks.onAddOrUpdate(LogicalDatastoreType.CONFIGURATION,
 353                 ElanUtils.getGroupInstanceid(dpId, arpRequestGroupId), (unused, newGroupId) -> {
 354                 LOG.info("group {} added in the config", arpRequestGroupId);
 355                 LoggingFutures.addErrorLogging(
 356                         txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION,
 357                             innerConfTx -> createArpRequestMatchFlowsForGroup(dpId, arpRequestGroupId,
 358                                     innerConfTx)),
 359                         LOG, "Error adding flow for the group {}",arpRequestGroupId);
 360                 return DataTreeEventCallbackRegistrar.NextAction.UNREGISTER;
 361             }, Duration.ofSeconds(5), iid -> LOG.error("arpRequestGroupId {} not found in Config datastore",
 362                         arpRequestGroupId));
 363
 364     }
 365
 366     private void createArpRequestMatchFlowsForGroup(Uint64 dpId, long arpRequestGroupId,
 367             TypedReadWriteTransaction<Configuration> tx) {
 368         FlowEntity arpReqArpCheckTbl = ArpResponderUtil.createArpDefaultFlow(dpId, NwConstants.ARP_CHECK_TABLE,
 369                 NwConstants.ARP_REQUEST, () -> Arrays.asList(MatchEthernetType.ARP, MatchArpOp.REQUEST), () ->
 370                         Arrays.asList(new ActionGroup(arpRequestGroupId),
 371                                 new ActionNxResubmit(NwConstants.ARP_LEARN_TABLE_1),
 372                                 new ActionNxResubmit(NwConstants.ARP_LEARN_TABLE_2),
 373                                 new ActionNxResubmit(NwConstants.ELAN_BASE_TABLE)));
 374         LOG.trace("Invoking MDSAL to install Arp Rquest Match Flow for table {}", NwConstants.ARP_CHECK_TABLE);
 375         mdsalManager.addFlow(tx, arpReqArpCheckTbl);
 376     }
 377
 378     private void createArpResponseMatchFlows(Uint64 dpId, TypedReadWriteTransaction<Configuration> tx) {
 379         FlowEntity arpRepArpCheckTbl = ArpResponderUtil.createArpDefaultFlow(dpId, NwConstants.ARP_CHECK_TABLE,
 380                 NwConstants.ARP_REPLY, () -> Arrays.asList(MatchEthernetType.ARP, MatchArpOp.REPLY), () ->
 381                         Arrays.asList(new ActionNxResubmit(NwConstants.ARP_LEARN_TABLE_1),
 382                                 new ActionNxResubmit(NwConstants.ARP_LEARN_TABLE_2),
 383                                 new ActionNxResubmit(NwConstants.ELAN_BASE_TABLE)));
 384         LOG.trace("Invoking MDSAL to install  Arp Reply Match Flow for Table {} ", NwConstants.ARP_CHECK_TABLE);
 385         mdsalManager.addFlow(tx, arpRepArpCheckTbl);
 386     }
 387
 388     private void createArpPuntAndLearnFlow(Uint64 dpId, TypedReadWriteTransaction<Configuration> tx) {
 389         LOG.debug("adding arp punt and learn entry in table {}", NwConstants.ARP_LEARN_TABLE_1);
 390
 391         List<MatchInfo> matches = new ArrayList<>();
 392         List<ActionInfo> actions = new ArrayList<>();
 393         Uint64 cookie = Uint64.valueOf("88880000", 16).intern();
 394
 395         matches.add(MatchEthernetType.ARP);
 396         actions.add(new ActionPuntToController());
 397         if (arpPuntTimeout != 0) {
 398             actions.add(new ActionLearn(0, arpPuntTimeout, ARP_LEARN_FLOW_PRIORITY, cookie, 0,
 399                     NwConstants.ARP_LEARN_TABLE_1, 0, 0,
 400                     Arrays.asList(
 401                             new MatchFromValue(NwConstants.ETHTYPE_ARP, NxmOfFieldType.NXM_OF_ETH_TYPE.getType(),
 402                                     NxmOfFieldType.NXM_OF_ETH_TYPE.getFlowModHeaderLenInt()),
 403                             new MatchFromField(NxmOfFieldType.NXM_OF_ARP_OP.getType(),
 404                                     NxmOfFieldType.NXM_OF_ARP_OP.getType(),
 405                                     NxmOfFieldType.NXM_OF_ARP_OP.getFlowModHeaderLenInt()),
 406                             new MatchFromField(NxmOfFieldType.NXM_OF_ARP_TPA.getType(),
 407                                     NxmOfFieldType.NXM_OF_ARP_TPA.getType(),
 408                                     NxmOfFieldType.NXM_OF_ARP_TPA.getFlowModHeaderLenInt()),
 409                             new ActionLearn.MatchFromField(NxmOfFieldType.OXM_OF_METADATA.getType(),
 410                                     MetaDataUtil.METADATA_ELAN_TAG_OFFSET,
 411                                     NxmOfFieldType.OXM_OF_METADATA.getType(), MetaDataUtil.METADATA_ELAN_TAG_OFFSET,
 412                                     ElanConstants.ELAN_TAG_LENGTH),
 413                             new CopyFromValue(1, NxmOfFieldType.NXM_NX_REG4.getType(), 8))));
 414
 415             actions.add(new ActionLearn(0, arpPuntTimeout, ARP_LEARN_FLOW_PRIORITY, cookie, 0,
 416                     NwConstants.ARP_LEARN_TABLE_2, 0, 0,
 417                     Arrays.asList(
 418                             new MatchFromValue(NwConstants.ETHTYPE_ARP, NxmOfFieldType.NXM_OF_ETH_TYPE.getType(),
 419                                     NxmOfFieldType.NXM_OF_ETH_TYPE.getFlowModHeaderLenInt()),
 420                             new MatchFromField(NxmOfFieldType.NXM_OF_ARP_OP.getType(),
 421                                     NxmOfFieldType.NXM_OF_ARP_OP.getType(),
 422                                     NxmOfFieldType.NXM_OF_ARP_OP.getFlowModHeaderLenInt()),
 423                             new MatchFromField(NxmOfFieldType.NXM_OF_ARP_TPA.getType(),
 424                                     NxmOfFieldType.NXM_OF_ARP_SPA.getType(),
 425                                     NxmOfFieldType.NXM_OF_ARP_TPA.getFlowModHeaderLenInt()),
 426                             new ActionLearn.MatchFromField(NxmOfFieldType.OXM_OF_METADATA.getType(),
 427                                     MetaDataUtil.METADATA_ELAN_TAG_OFFSET, NxmOfFieldType.OXM_OF_METADATA.getType(),
 428                                     MetaDataUtil.METADATA_ELAN_TAG_OFFSET, MetaDataUtil.METADATA_ELAN_TAG_BITLEN),
 429                             new CopyFromValue(1, NxmOfFieldType.NXM_NX_REG4.getType(), 8, 8))));
 430         }
 431
 432         List<InstructionInfo> instructions = new ArrayList<>();
 433         instructions.add(new InstructionApplyActions(actions));
 434         String flowid = String.valueOf(NwConstants.ARP_LEARN_TABLE_1) + NwConstants.FLOWID_SEPARATOR + "arp.punt";
 435         FlowEntity flow = MDSALUtil.buildFlowEntity(dpId, NwConstants.ARP_LEARN_TABLE_1, flowid,
 436                 NwConstants.TABLE_MISS_PRIORITY, "arp punt/learn flow", 0,
 437                 0, cookie, matches, instructions);
 438         mdsalManager.addFlow(tx, flow);
 439     }
 440
 441     private void addGarpLearnMatchFlow(Uint64 dpId, TypedReadWriteTransaction<Configuration> tx) {
 442         List<ActionInfo> actions = new ArrayList<>();
 443         List<MatchInfoBase> matches = new ArrayList<>();
 444
 445         matches.add(MatchEthernetType.ARP);
 446         matches.add(new NxMatchRegister(NxmNxReg4.class, GARP_LEARN_MATCH_VALUE, ARP_LEARN_MATCH_MASK));
 447
 448         actions.add(new ActionRegLoad(NxmNxReg4.class, 0, 31, 0));
 449         actions.add(new ActionPuntToController());
 450         actions.add(new ActionNxResubmit(NwConstants.ELAN_SMAC_LEARNED_TABLE));
 451         actions.add(new ActionNxResubmit(NwConstants.ELAN_SMAC_TABLE));
 452
 453         List<InstructionInfo> instructions = new ArrayList<>();
 454         instructions.add(new InstructionApplyActions(actions));
 455         String flowid = String.valueOf(NwConstants.ELAN_BASE_TABLE) + NwConstants.FLOWID_SEPARATOR + "garp.match";
 456         FlowEntity garpFlow = MDSALUtil.buildFlowEntity(dpId, NwConstants.ELAN_BASE_TABLE, flowid,
 457                 NwConstants.DEFAULT_ARP_FLOW_PRIORITY, "GARP learn match flow", 0, 0,
 458                 ElanConstants.COOKIE_ELAN_BASE_SMAC, matches, instructions);
 459         mdsalManager.addFlow(tx, garpFlow);
 460     }
 461
 462     private void addArpLearnMatchFlow(Uint64 dpId, TypedReadWriteTransaction<Configuration> tx) {
 463         List<ActionInfo> actions = new ArrayList<>();
 464         List<MatchInfoBase> matches = new ArrayList<>();
 465
 466         matches.add(MatchEthernetType.ARP);
 467         matches.add(new NxMatchRegister(NxmNxReg4.class, ARP_LEARN_MATCH_VALUE, ARP_LEARN_MATCH_MASK));
 468
 469         actions.add(new ActionRegLoad(NxmNxReg4.class, 0, 31, 0));
 470         actions.add(new ActionNxResubmit(NwConstants.ELAN_SMAC_LEARNED_TABLE));
 471         actions.add(new ActionNxResubmit(NwConstants.ELAN_SMAC_TABLE));
 472
 473         List<InstructionInfo> instructions = new ArrayList<>();
 474         instructions.add(new InstructionApplyActions(actions));
 475         String flowid = String.valueOf(NwConstants.ELAN_BASE_TABLE) + NwConstants.FLOWID_SEPARATOR + "arp.match";
 476         FlowEntity arpFlow = MDSALUtil.buildFlowEntity(dpId, NwConstants.ELAN_BASE_TABLE, flowid,
 477                 NwConstants.DEFAULT_ARP_FLOW_PRIORITY, "ARP learn match flow", 0, 0,
 478                 ElanConstants.COOKIE_ELAN_BASE_SMAC, matches, instructions);
 479         mdsalManager.addFlow(tx, arpFlow);
 480     }
 481
 482 }