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.genius.infra.Datastore.CONFIGURATION;
  11 import static org.opendaylight.infrautils.utils.concurrent.LoggingFutures.addErrorLogging;
  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.PostConstruct;
  21 import javax.inject.Inject;
  22 import javax.inject.Singleton;
  23 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  24 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  25 import org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase;
  26 import org.opendaylight.genius.datastoreutils.listeners.DataTreeEventCallbackRegistrar;
  27 import org.opendaylight.genius.infra.Datastore;
  28 import org.opendaylight.genius.infra.Datastore.Configuration;
  29 import org.opendaylight.genius.infra.ManagedNewTransactionRunner;
  30 import org.opendaylight.genius.infra.ManagedNewTransactionRunnerImpl;
  31 import org.opendaylight.genius.infra.TypedReadWriteTransaction;
  32 import org.opendaylight.genius.infra.TypedWriteTransaction;
  33 import org.opendaylight.genius.mdsalutil.ActionInfo;
  34 import org.opendaylight.genius.mdsalutil.BucketInfo;
  35 import org.opendaylight.genius.mdsalutil.FlowEntity;
  36 import org.opendaylight.genius.mdsalutil.GroupEntity;
  37 import org.opendaylight.genius.mdsalutil.InstructionInfo;
  38 import org.opendaylight.genius.mdsalutil.MDSALUtil;
  39 import org.opendaylight.genius.mdsalutil.MatchInfo;
  40 import org.opendaylight.genius.mdsalutil.MatchInfoBase;
  41 import org.opendaylight.genius.mdsalutil.MetaDataUtil;
  42 import org.opendaylight.genius.mdsalutil.NwConstants;
  43 import org.opendaylight.genius.mdsalutil.NwConstants.NxmOfFieldType;
  44 import org.opendaylight.genius.mdsalutil.actions.ActionDrop;
  45 import org.opendaylight.genius.mdsalutil.actions.ActionGroup;
  46 import org.opendaylight.genius.mdsalutil.actions.ActionLearn;
  47 import org.opendaylight.genius.mdsalutil.actions.ActionLearn.CopyFromValue;
  48 import org.opendaylight.genius.mdsalutil.actions.ActionLearn.MatchFromField;
  49 import org.opendaylight.genius.mdsalutil.actions.ActionLearn.MatchFromValue;
  50 import org.opendaylight.genius.mdsalutil.actions.ActionNxResubmit;
  51 import org.opendaylight.genius.mdsalutil.actions.ActionPuntToController;
  52 import org.opendaylight.genius.mdsalutil.actions.ActionRegLoad;
  53 import org.opendaylight.genius.mdsalutil.instructions.InstructionApplyActions;
  54 import org.opendaylight.genius.mdsalutil.instructions.InstructionGotoTable;
  55 import org.opendaylight.genius.mdsalutil.interfaces.IMdsalApiManager;
  56 import org.opendaylight.genius.mdsalutil.matches.MatchArpOp;
  57 import org.opendaylight.genius.mdsalutil.matches.MatchEthernetDestination;
  58 import org.opendaylight.genius.mdsalutil.matches.MatchEthernetType;
  59 import org.opendaylight.genius.mdsalutil.nxmatches.NxMatchRegister;
  60 import org.opendaylight.infrautils.jobcoordinator.JobCoordinator;
  61 import org.opendaylight.infrautils.utils.concurrent.LoggingFutures;
  62 import org.opendaylight.netvirt.elan.arp.responder.ArpResponderConstant;
  63 import org.opendaylight.netvirt.elan.arp.responder.ArpResponderUtil;
  64 import org.opendaylight.netvirt.elan.utils.ElanConstants;
  65 import org.opendaylight.netvirt.elan.utils.ElanUtils;
  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 AsyncDataTreeChangeListenerBase<Node, ElanNodeListener> {
  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         this.broker = dataBroker;
 105         this.txRunner = new ManagedNewTransactionRunnerImpl(dataBroker);
 106         this.mdsalManager = mdsalManager;
 107         this.tempSmacLearnTimeout = elanConfig.getTempSmacLearnTimeout().toJava();
 108         this.arpPuntTimeout = elanConfig.getArpPuntTimeout().intValue();
 109         this.puntLldpToController = elanConfig.isPuntLldpToController();
 110         this.idManagerService = idManagerService;
 111         this.jobCoordinator = jobCoordinator;
 112         this.eventCallbacks = eventCallbacks;
 113     }
 114
 115     @Override
 116     @PostConstruct
 117     public void init() {
 118         registerListener(LogicalDatastoreType.OPERATIONAL, broker);
 119     }
 120
 121     @Override
 122     protected InstanceIdentifier<Node> getWildCardPath() {
 123         return InstanceIdentifier.create(Nodes.class).child(Node.class);
 124     }
 125
 126     @Override
 127     protected void remove(InstanceIdentifier<Node> identifier, Node del) {
 128     }
 129
 130     @Override
 131     protected void update(InstanceIdentifier<Node> identifier, Node original, Node update) {
 132     }
 133
 134     @Override
 135     protected void add(InstanceIdentifier<Node> identifier, Node add) {
 136         NodeId nodeId = add.getId();
 137         String[] node = nodeId.getValue().split(":");
 138         if (node.length < 2) {
 139             LOG.warn("Unexpected nodeId {}", nodeId.getValue());
 140             return;
 141         }
 142         addErrorLogging(txRunner.callWithNewWriteOnlyTransactionAndSubmit(Datastore.CONFIGURATION, tx -> {
 143             Uint64 dpId = Uint64.valueOf(node[1]);
 144             createTableMissEntry(tx, dpId);
 145             createMulticastFlows(tx, dpId);
 146             createArpDefaultFlowsForArpCheckTable(dpId);
 147         }), LOG, "Error handling ELAN node addition for {}", add);
 148     }
 149
 150     private void createArpDefaultFlowsForArpCheckTable(Uint64 dpId) {
 151
 152         jobCoordinator.enqueueJob("ARP_CHECK_TABLE-" + dpId.toString(),
 153             () -> Collections.singletonList(txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION, tx -> {
 154                 try {
 155                     LOG.debug("Received notification to install Arp Check Default entries for dpn {} ", dpId);
 156                     createArpRequestMatchFlows(dpId, tx);
 157                     createArpResponseMatchFlows(dpId, tx);
 158                     createArpPuntAndLearnFlow(dpId, tx);
 159                     addGarpLearnMatchFlow(dpId, tx);
 160                     addArpLearnMatchFlow(dpId, tx);
 161                 } catch (InterruptedException | ExecutionException e) {
 162                     LOG.error("Error programming ARP rules for dpn {}", dpId, e);
 163                 }
 164             })));
 165     }
 166
 167     public void createTableMissEntry(TypedWriteTransaction<Configuration> tx, Uint64 dpnId) {
 168         setupTableMissSmacFlow(tx, dpnId);
 169         setupTableMissDmacFlow(tx, dpnId);
 170         setupTableMissArpCheckFlow(tx, dpnId);
 171         setupTableMissApResponderFlow(tx, dpnId);
 172         setupExternalL2vniTableMissFlow(tx, dpnId);
 173     }
 174
 175     private void createMulticastFlows(TypedWriteTransaction<Configuration> tx, Uint64 dpId) {
 176         createL2ControlProtocolDropFlows(tx, dpId);
 177         createMulticastPuntFlows(tx, dpId);
 178     }
 179
 180     private void createMulticastPuntFlows(TypedWriteTransaction<Configuration> tx, Uint64 dpId) {
 181         if (puntLldpToController) {
 182             createLldpFlows(tx, dpId);
 183         }
 184     }
 185
 186     private void createLldpFlows(TypedWriteTransaction<Configuration> tx, Uint64 dpId) {
 187         createLldpFlow(tx, dpId, ElanConstants.LLDP_DST_1, "LLDP dMac Table Flow 1");
 188         createLldpFlow(tx, dpId, ElanConstants.LLDP_DST_2, "LLDP dMac Table Flow 2");
 189         createLldpFlow(tx, dpId, ElanConstants.LLDP_DST_3, "LLDP dMac Table Flow 3");
 190     }
 191
 192     private void createLldpFlow(TypedWriteTransaction<Configuration> tx, Uint64 dpId, String dstMac,
 193             String flowName) {
 194         List<MatchInfo> mkMatches = new ArrayList<>();
 195         mkMatches.add(new MatchEthernetType(ElanConstants.LLDP_ETH_TYPE));
 196         mkMatches.add(new MatchEthernetDestination(new MacAddress(dstMac)));
 197
 198         List<ActionInfo> listActionInfo = new ArrayList<>();
 199         listActionInfo.add(new ActionPuntToController());
 200
 201         List<InstructionInfo> mkInstructions = new ArrayList<>();
 202         mkInstructions.add(new InstructionApplyActions(listActionInfo));
 203
 204         String flowId = dpId.toString() + NwConstants.ELAN_DMAC_TABLE + "lldp" + ElanConstants.LLDP_ETH_TYPE + dstMac;
 205         FlowEntity lldpFlow = MDSALUtil.buildFlowEntity(dpId, NwConstants.ELAN_DMAC_TABLE, flowId, 16, flowName, 0, 0,
 206                 ElanConstants.COOKIE_ELAN_KNOWN_DMAC, mkMatches, mkInstructions);
 207
 208         mdsalManager.addFlow(tx, lldpFlow);
 209     }
 210
 211     private void setupTableMissSmacFlow(TypedWriteTransaction<Configuration> tx, Uint64 dpId) {
 212         List<ActionInfo> actionsInfos = new ArrayList<>();
 213         actionsInfos.add(new ActionPuntToController());
 214         actionsInfos.add(new ActionLearn(0, tempSmacLearnTimeout, 0, ElanConstants.COOKIE_ELAN_LEARNED_SMAC, 0,
 215                 NwConstants.ELAN_SMAC_LEARNED_TABLE, 0, 0,
 216                 Arrays.asList(
 217                         new ActionLearn.MatchFromField(NwConstants.NxmOfFieldType.NXM_OF_ETH_SRC.getType(),
 218                                 NwConstants.NxmOfFieldType.NXM_OF_ETH_SRC.getType(),
 219                                 NwConstants.NxmOfFieldType.NXM_OF_ETH_SRC.getFlowModHeaderLenInt()),
 220                         new ActionLearn.MatchFromField(NwConstants.NxmOfFieldType.NXM_NX_REG1.getType(),
 221                                 NwConstants.NxmOfFieldType.NXM_NX_REG1.getType(), ElanConstants.INTERFACE_TAG_LENGTH),
 222                         new ActionLearn.CopyFromValue(LEARN_MATCH_REG4_VALUE,
 223                                 NwConstants.NxmOfFieldType.NXM_NX_REG4.getType(), 8))));
 224
 225         List<InstructionInfo> mkInstructions = new ArrayList<>();
 226         mkInstructions.add(new InstructionApplyActions(actionsInfos));
 227         mkInstructions.add(new InstructionGotoTable(NwConstants.ELAN_DMAC_TABLE));
 228
 229         List<MatchInfo> mkMatches = new ArrayList<>();
 230         FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.ELAN_SMAC_TABLE,
 231                 getTableMissFlowRef(NwConstants.ELAN_SMAC_TABLE), 0, "ELAN sMac Table Miss Flow", 0, 0,
 232                 ElanConstants.COOKIE_ELAN_KNOWN_SMAC, mkMatches, mkInstructions);
 233         mdsalManager.addFlow(tx, flowEntity);
 234
 235         addSmacBaseTableFlow(tx, dpId);
 236         addSmacLearnedTableFlow(tx, dpId);
 237     }
 238
 239     private void addSmacBaseTableFlow(TypedWriteTransaction<Configuration> tx, Uint64 dpId) {
 240         // T48 - resubmit to T49 & T50
 241         List<ActionInfo> actionsInfo = new ArrayList<>();
 242         actionsInfo.add(new ActionNxResubmit(NwConstants.ELAN_SMAC_LEARNED_TABLE));
 243         actionsInfo.add(new ActionNxResubmit(NwConstants.ELAN_SMAC_TABLE));
 244         List<InstructionInfo> mkInstruct = new ArrayList<>();
 245         mkInstruct.add(new InstructionApplyActions(actionsInfo));
 246         List<MatchInfo> mkMatch = new ArrayList<>();
 247         FlowEntity doubleResubmitTable = MDSALUtil.buildFlowEntity(dpId, NwConstants.ELAN_BASE_TABLE,
 248                 getTableMissFlowRef(NwConstants.ELAN_BASE_TABLE), 0, "Elan sMac resubmit table", 0, 0,
 249                 ElanConstants.COOKIE_ELAN_BASE_SMAC, mkMatch, mkInstruct);
 250         mdsalManager.addFlow(tx, doubleResubmitTable);
 251     }
 252
 253     private void addSmacLearnedTableFlow(TypedWriteTransaction<Configuration> tx, Uint64 dpId) {
 254         // T50 - match on Reg4 and goto T51
 255         List<MatchInfoBase> mkMatches = new ArrayList<>();
 256         mkMatches.add(new NxMatchRegister(NxmNxReg4.class, LEARN_MATCH_REG4_VALUE));
 257         List<InstructionInfo> mkInstructions = new ArrayList<>();
 258         mkInstructions.add(new InstructionGotoTable(NwConstants.ELAN_DMAC_TABLE));
 259         String flowRef = new StringBuilder().append(NwConstants.ELAN_SMAC_TABLE).append(NwConstants.FLOWID_SEPARATOR)
 260                 .append(LEARN_MATCH_REG4_VALUE).toString();
 261         FlowEntity flowEntity =
 262                 MDSALUtil.buildFlowEntity(dpId, NwConstants.ELAN_SMAC_TABLE, flowRef, 10, "ELAN sMac Table Reg4 Flow",
 263                         0, 0, Uint64.valueOf(ElanConstants.COOKIE_ELAN_KNOWN_SMAC.toJava()
 264                             .add(BigInteger.valueOf(LEARN_MATCH_REG4_VALUE))),
 265                         mkMatches, mkInstructions);
 266         mdsalManager.addFlow(tx, flowEntity);
 267     }
 268
 269     private void setupTableMissDmacFlow(TypedWriteTransaction<Configuration> tx, Uint64 dpId) {
 270         List<MatchInfo> mkMatches = new ArrayList<>();
 271
 272         List<InstructionInfo> mkInstructions = new ArrayList<>();
 273         mkInstructions.add(new InstructionGotoTable(NwConstants.ELAN_UNKNOWN_DMAC_TABLE));
 274
 275         FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.ELAN_DMAC_TABLE,
 276                 getTableMissFlowRef(NwConstants.ELAN_DMAC_TABLE), 0, "ELAN dMac Table Miss Flow", 0, 0,
 277                 ElanConstants.COOKIE_ELAN_KNOWN_DMAC, mkMatches, mkInstructions);
 278
 279         mdsalManager.addFlow(tx, flowEntity);
 280     }
 281
 282     private void setupExternalL2vniTableMissFlow(TypedWriteTransaction<Configuration> tx, Uint64 dpnId) {
 283         List<MatchInfo> matches = new ArrayList<>();
 284         List<ActionInfo> actionsInfos = Collections.singletonList(new ActionNxResubmit(NwConstants
 285                         .LPORT_DISPATCHER_TABLE));
 286         List<InstructionInfo> instructions = Collections.singletonList(new InstructionApplyActions(actionsInfos));
 287         FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpnId, NwConstants.L2VNI_EXTERNAL_TUNNEL_DEMUX_TABLE,
 288                         getTableMissFlowRef(NwConstants.L2VNI_EXTERNAL_TUNNEL_DEMUX_TABLE), 0,
 289                         "External L2VNI Table Miss Flow", 0, 0,
 290                          ElanConstants.COOKIE_L2VNI_DEMUX, matches, instructions);
 291         mdsalManager.addFlow(tx, flowEntity);
 292     }
 293
 294
 295     private void createL2ControlProtocolDropFlows(TypedWriteTransaction<Configuration> tx, Uint64 dpId) {
 296         List<MatchInfo> mkMatches = new ArrayList<>();
 297         MatchEthernetDestination matchEthDst =
 298                 new MatchEthernetDestination(new MacAddress(ElanConstants.L2_CONTROL_PACKETS_DMAC),
 299                         new MacAddress(ElanConstants.L2_CONTROL_PACKETS_DMAC_MASK));
 300
 301         mkMatches.add(matchEthDst);
 302
 303         List<ActionInfo> listActionInfo = new ArrayList<>();
 304         listActionInfo.add(new ActionDrop());
 305
 306         List<InstructionInfo> mkInstructions = new ArrayList<>();
 307         mkInstructions.add(new InstructionApplyActions(listActionInfo));
 308
 309         String flowId = dpId.toString() + NwConstants.ELAN_DMAC_TABLE + "l2control"
 310                 + ElanConstants.L2_CONTROL_PACKETS_DMAC + ElanConstants.L2_CONTROL_PACKETS_DMAC_MASK;
 311         FlowEntity flow = MDSALUtil.buildFlowEntity(dpId, NwConstants.ELAN_DMAC_TABLE, flowId, 15,
 312                 "L2 control packets dMac Table Flow", 0, 0, ElanConstants.COOKIE_ELAN_KNOWN_DMAC, mkMatches,
 313                 mkInstructions);
 314
 315         mdsalManager.addFlow(tx, flow);
 316     }
 317
 318     private static String getTableMissFlowRef(long tableId) {
 319         return String.valueOf(tableId);
 320     }
 321
 322     @Override
 323     protected ElanNodeListener getDataTreeChangeListener() {
 324         return ElanNodeListener.this;
 325     }
 326
 327     private void setupTableMissApResponderFlow(TypedWriteTransaction<Configuration> tx, final Uint64 dpnId) {
 328         mdsalManager.addFlow(tx, ArpResponderUtil.getArpResponderTableMissFlow(dpnId));
 329     }
 330
 331     private void setupTableMissArpCheckFlow(TypedWriteTransaction<Configuration> tx, Uint64 dpnId) {
 332         mdsalManager.addFlow(tx,
 333                 MDSALUtil.buildFlowEntity(dpnId, NwConstants.ARP_CHECK_TABLE,
 334                         String.valueOf("L2.ELAN." + NwConstants.ARP_CHECK_TABLE), NwConstants.TABLE_MISS_PRIORITY,
 335                         ArpResponderConstant.DROP_FLOW_NAME.value(), 0, 0, NwConstants.COOKIE_ARP_RESPONDER,
 336                         new ArrayList<MatchInfo>(),
 337                         Collections.singletonList(new InstructionGotoTable(NwConstants.ELAN_BASE_TABLE))));
 338     }
 339
 340     private void createArpRequestMatchFlows(Uint64 dpId, TypedReadWriteTransaction<Configuration> tx)
 341             throws ExecutionException, InterruptedException {
 342         long arpRequestGroupId = ArpResponderUtil.retrieveStandardArpResponderGroupId(idManagerService);
 343         List<BucketInfo> buckets = ArpResponderUtil.getDefaultBucketInfos(NwConstants.ARP_RESPONDER_TABLE);
 344         LOG.trace("Installing group flow on dpn {}", dpId);
 345         GroupEntity groupEntity =
 346             MDSALUtil.buildGroupEntity(dpId, arpRequestGroupId, ArpResponderConstant.GROUP_FLOW_NAME.value(),
 347                 GroupTypes.GroupAll, buckets);
 348         mdsalManager.addGroup(tx, groupEntity);
 349         InstanceIdentifier<Group> groupIid = ElanUtils.getGroupInstanceid(dpId, arpRequestGroupId);
 350         if (tx.read(groupIid).get().isPresent()) {
 351             LOG.info("group {} is present in the config hence adding the flow", arpRequestGroupId);
 352             createArpRequestMatchFlowsForGroup(dpId, arpRequestGroupId,tx);
 353             return;
 354         }
 355         eventCallbacks.onAddOrUpdate(LogicalDatastoreType.CONFIGURATION,
 356                 ElanUtils.getGroupInstanceid(dpId, arpRequestGroupId), (unused, newGroupId) -> {
 357                 LOG.info("group {} added in the config", arpRequestGroupId);
 358                 LoggingFutures.addErrorLogging(
 359                         txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION,
 360                             innerConfTx -> createArpRequestMatchFlowsForGroup(dpId, arpRequestGroupId,
 361                                     innerConfTx)),
 362                         LOG, "Error adding flow for the group {}",arpRequestGroupId);
 363                 return DataTreeEventCallbackRegistrar.NextAction.UNREGISTER;
 364             }, Duration.ofSeconds(5), iid -> LOG.error("arpRequestGroupId {} not found in Config datastore",
 365                         arpRequestGroupId));
 366
 367     }
 368
 369     private void createArpRequestMatchFlowsForGroup(Uint64 dpId, long arpRequestGroupId,
 370             TypedReadWriteTransaction<Configuration> tx) {
 371         FlowEntity arpReqArpCheckTbl = ArpResponderUtil.createArpDefaultFlow(dpId, NwConstants.ARP_CHECK_TABLE,
 372                 NwConstants.ARP_REQUEST, () -> Arrays.asList(MatchEthernetType.ARP, MatchArpOp.REQUEST), () ->
 373                         Arrays.asList(new ActionGroup(arpRequestGroupId),
 374                                 new ActionNxResubmit(NwConstants.ARP_LEARN_TABLE_1),
 375                                 new ActionNxResubmit(NwConstants.ARP_LEARN_TABLE_2),
 376                                 new ActionNxResubmit(NwConstants.ELAN_BASE_TABLE)));
 377         LOG.trace("Invoking MDSAL to install Arp Rquest Match Flow for table {}", NwConstants.ARP_CHECK_TABLE);
 378         mdsalManager.addFlow(tx, arpReqArpCheckTbl);
 379     }
 380
 381     private void createArpResponseMatchFlows(Uint64 dpId, TypedReadWriteTransaction<Configuration> tx) {
 382         FlowEntity arpRepArpCheckTbl = ArpResponderUtil.createArpDefaultFlow(dpId, NwConstants.ARP_CHECK_TABLE,
 383                 NwConstants.ARP_REPLY, () -> Arrays.asList(MatchEthernetType.ARP, MatchArpOp.REPLY), () ->
 384                         Arrays.asList(new ActionNxResubmit(NwConstants.ARP_LEARN_TABLE_1),
 385                                 new ActionNxResubmit(NwConstants.ARP_LEARN_TABLE_2),
 386                                 new ActionNxResubmit(NwConstants.ELAN_BASE_TABLE)));
 387         LOG.trace("Invoking MDSAL to install  Arp Reply Match Flow for Table {} ", NwConstants.ARP_CHECK_TABLE);
 388         mdsalManager.addFlow(tx, arpRepArpCheckTbl);
 389     }
 390
 391     private void createArpPuntAndLearnFlow(Uint64 dpId, TypedReadWriteTransaction<Configuration> tx) {
 392         LOG.debug("adding arp punt and learn entry in table {}", NwConstants.ARP_LEARN_TABLE_1);
 393
 394         List<MatchInfo> matches = new ArrayList<>();
 395         List<ActionInfo> actions = new ArrayList<>();
 396         Uint64 cookie = Uint64.valueOf("88880000", 16).intern();
 397
 398         matches.add(MatchEthernetType.ARP);
 399         actions.add(new ActionPuntToController());
 400         if (arpPuntTimeout != 0) {
 401             actions.add(new ActionLearn(0, arpPuntTimeout, ARP_LEARN_FLOW_PRIORITY, cookie, 0,
 402                     NwConstants.ARP_LEARN_TABLE_1, 0, 0,
 403                     Arrays.asList(
 404                             new MatchFromValue(NwConstants.ETHTYPE_ARP, NxmOfFieldType.NXM_OF_ETH_TYPE.getType(),
 405                                     NxmOfFieldType.NXM_OF_ETH_TYPE.getFlowModHeaderLenInt()),
 406                             new MatchFromField(NxmOfFieldType.NXM_OF_ARP_OP.getType(),
 407                                     NxmOfFieldType.NXM_OF_ARP_OP.getType(),
 408                                     NxmOfFieldType.NXM_OF_ARP_OP.getFlowModHeaderLenInt()),
 409                             new MatchFromField(NxmOfFieldType.NXM_OF_ARP_TPA.getType(),
 410                                     NxmOfFieldType.NXM_OF_ARP_TPA.getType(),
 411                                     NxmOfFieldType.NXM_OF_ARP_TPA.getFlowModHeaderLenInt()),
 412                             new ActionLearn.MatchFromField(NxmOfFieldType.OXM_OF_METADATA.getType(),
 413                                     MetaDataUtil.METADATA_ELAN_TAG_OFFSET,
 414                                     NxmOfFieldType.OXM_OF_METADATA.getType(), MetaDataUtil.METADATA_ELAN_TAG_OFFSET,
 415                                     ElanConstants.ELAN_TAG_LENGTH),
 416                             new CopyFromValue(1, NxmOfFieldType.NXM_NX_REG4.getType(), 8))));
 417
 418             actions.add(new ActionLearn(0, arpPuntTimeout, ARP_LEARN_FLOW_PRIORITY, cookie, 0,
 419                     NwConstants.ARP_LEARN_TABLE_2, 0, 0,
 420                     Arrays.asList(
 421                             new MatchFromValue(NwConstants.ETHTYPE_ARP, NxmOfFieldType.NXM_OF_ETH_TYPE.getType(),
 422                                     NxmOfFieldType.NXM_OF_ETH_TYPE.getFlowModHeaderLenInt()),
 423                             new MatchFromField(NxmOfFieldType.NXM_OF_ARP_OP.getType(),
 424                                     NxmOfFieldType.NXM_OF_ARP_OP.getType(),
 425                                     NxmOfFieldType.NXM_OF_ARP_OP.getFlowModHeaderLenInt()),
 426                             new MatchFromField(NxmOfFieldType.NXM_OF_ARP_TPA.getType(),
 427                                     NxmOfFieldType.NXM_OF_ARP_SPA.getType(),
 428                                     NxmOfFieldType.NXM_OF_ARP_TPA.getFlowModHeaderLenInt()),
 429                             new ActionLearn.MatchFromField(NxmOfFieldType.OXM_OF_METADATA.getType(),
 430                                     MetaDataUtil.METADATA_ELAN_TAG_OFFSET, NxmOfFieldType.OXM_OF_METADATA.getType(),
 431                                     MetaDataUtil.METADATA_ELAN_TAG_OFFSET, MetaDataUtil.METADATA_ELAN_TAG_BITLEN),
 432                             new CopyFromValue(1, NxmOfFieldType.NXM_NX_REG4.getType(), 8, 8))));
 433         }
 434
 435         List<InstructionInfo> instructions = new ArrayList<>();
 436         instructions.add(new InstructionApplyActions(actions));
 437         String flowid = String.valueOf(NwConstants.ARP_LEARN_TABLE_1) + NwConstants.FLOWID_SEPARATOR + "arp.punt";
 438         FlowEntity flow = MDSALUtil.buildFlowEntity(dpId, NwConstants.ARP_LEARN_TABLE_1, flowid,
 439                 NwConstants.TABLE_MISS_PRIORITY, "arp punt/learn flow", 0,
 440                 0, cookie, matches, instructions);
 441         mdsalManager.addFlow(tx, flow);
 442     }
 443
 444     private void addGarpLearnMatchFlow(Uint64 dpId, TypedReadWriteTransaction<Configuration> tx) {
 445         List<ActionInfo> actions = new ArrayList<>();
 446         List<MatchInfoBase> matches = new ArrayList<>();
 447
 448         matches.add(MatchEthernetType.ARP);
 449         matches.add(new NxMatchRegister(NxmNxReg4.class, GARP_LEARN_MATCH_VALUE, ARP_LEARN_MATCH_MASK));
 450
 451         actions.add(new ActionRegLoad(NxmNxReg4.class, 0, 31, 0));
 452         actions.add(new ActionPuntToController());
 453         actions.add(new ActionNxResubmit(NwConstants.ELAN_SMAC_LEARNED_TABLE));
 454         actions.add(new ActionNxResubmit(NwConstants.ELAN_SMAC_TABLE));
 455
 456         List<InstructionInfo> instructions = new ArrayList<>();
 457         instructions.add(new InstructionApplyActions(actions));
 458         String flowid = String.valueOf(NwConstants.ELAN_BASE_TABLE) + NwConstants.FLOWID_SEPARATOR + "garp.match";
 459         FlowEntity garpFlow = MDSALUtil.buildFlowEntity(dpId, NwConstants.ELAN_BASE_TABLE, flowid,
 460                 NwConstants.DEFAULT_ARP_FLOW_PRIORITY, "GARP learn match flow", 0, 0,
 461                 ElanConstants.COOKIE_ELAN_BASE_SMAC, matches, instructions);
 462         mdsalManager.addFlow(tx, garpFlow);
 463     }
 464
 465     private void addArpLearnMatchFlow(Uint64 dpId, TypedReadWriteTransaction<Configuration> tx) {
 466         List<ActionInfo> actions = new ArrayList<>();
 467         List<MatchInfoBase> matches = new ArrayList<>();
 468
 469         matches.add(MatchEthernetType.ARP);
 470         matches.add(new NxMatchRegister(NxmNxReg4.class, ARP_LEARN_MATCH_VALUE, ARP_LEARN_MATCH_MASK));
 471
 472         actions.add(new ActionRegLoad(NxmNxReg4.class, 0, 31, 0));
 473         actions.add(new ActionNxResubmit(NwConstants.ELAN_SMAC_LEARNED_TABLE));
 474         actions.add(new ActionNxResubmit(NwConstants.ELAN_SMAC_TABLE));
 475
 476         List<InstructionInfo> instructions = new ArrayList<>();
 477         instructions.add(new InstructionApplyActions(actions));
 478         String flowid = String.valueOf(NwConstants.ELAN_BASE_TABLE) + NwConstants.FLOWID_SEPARATOR + "arp.match";
 479         FlowEntity arpFlow = MDSALUtil.buildFlowEntity(dpId, NwConstants.ELAN_BASE_TABLE, flowid,
 480                 NwConstants.DEFAULT_ARP_FLOW_PRIORITY, "ARP learn match flow", 0, 0,
 481                 ElanConstants.COOKIE_ELAN_BASE_SMAC, matches, instructions);
 482         mdsalManager.addFlow(tx, arpFlow);
 483     }
 484
 485 }