git.opendaylight Code Review - netvirt.git/blob

   1 /*
   2  * Copyright (c) 2016 Red Hat, Inc. 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
   9 package org.opendaylight.netvirt.ipv6service.utils;
  10
  11 import com.google.common.base.Optional;
  12 import java.math.BigInteger;
  13 import java.net.InetAddress;
  14 import java.net.UnknownHostException;
  15 import java.nio.ByteBuffer;
  16 import java.util.ArrayList;
  17 import java.util.Arrays;
  18 import java.util.List;
  19 import java.util.concurrent.ConcurrentHashMap;
  20 import java.util.concurrent.ConcurrentMap;
  21 import java.util.concurrent.ExecutionException;
  22 import org.apache.commons.lang3.StringUtils;
  23 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  24 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
  25 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  26 import org.opendaylight.genius.mdsalutil.ActionInfo;
  27 import org.opendaylight.genius.mdsalutil.ActionType;
  28 import org.opendaylight.genius.mdsalutil.FlowEntity;
  29 import org.opendaylight.genius.mdsalutil.InstructionInfo;
  30 import org.opendaylight.genius.mdsalutil.InstructionType;
  31 import org.opendaylight.genius.mdsalutil.MDSALUtil;
  32 import org.opendaylight.genius.mdsalutil.MatchFieldType;
  33 import org.opendaylight.genius.mdsalutil.MatchInfo;
  34 import org.opendaylight.genius.mdsalutil.NwConstants;
  35 import org.opendaylight.genius.mdsalutil.interfaces.IMdsalApiManager;
  36 import org.opendaylight.genius.mdsalutil.packet.IPProtocols;
  37 import org.opendaylight.genius.utils.ServiceIndex;
  38 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv6Address;
  39 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.Interfaces;
  40 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.InterfaceKey;
  41 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.MacAddress;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.Flow;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list.Instruction;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.ServiceBindings;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.ServiceModeIngress;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.ServiceTypeFlowBased;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.StypeOpenflow;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.StypeOpenflowBuilder;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.service.bindings.ServicesInfo;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.service.bindings.ServicesInfoKey;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.service.bindings.services.info.BoundServices;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.service.bindings.services.info.BoundServicesBuilder;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.service.bindings.services.info.BoundServicesKey;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.ipv6service.nd.packet.rev160620.EthernetHeader;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.ipv6service.nd.packet.rev160620.Ipv6Header;
  56 import org.opendaylight.yangtools.yang.binding.DataObject;
  57 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  58 import org.slf4j.Logger;
  59 import org.slf4j.LoggerFactory;
  60
  61 public class Ipv6ServiceUtils {
  62     private static final Logger LOG = LoggerFactory.getLogger(Ipv6ServiceUtils.class);
  63     private ConcurrentMap<String, InstanceIdentifier<Flow>> icmpv6FlowMap;
  64     public static final Ipv6ServiceUtils INSTANCE = new Ipv6ServiceUtils();
  65     public static Ipv6Address ALL_NODES_MCAST_ADDR;
  66     public static Ipv6Address UNSPECIFIED_ADDR;
  67
  68     public Ipv6ServiceUtils() {
  69         icmpv6FlowMap = new ConcurrentHashMap<>();
  70         try {
  71             UNSPECIFIED_ADDR = Ipv6Address.getDefaultInstance(
  72                     InetAddress.getByName("0:0:0:0:0:0:0:0").getHostAddress());
  73             ALL_NODES_MCAST_ADDR = Ipv6Address.getDefaultInstance(InetAddress.getByName("FF02::1").getHostAddress());
  74         } catch (UnknownHostException e) {
  75             LOG.error("Ipv6ServiceUtils: Failed to instantiate the ipv6 address", e);
  76         }
  77     }
  78
  79     public static Ipv6ServiceUtils getInstance() {
  80         return INSTANCE;
  81     }
  82
  83     /**
  84      * Retrieves the object from the datastore.
  85      * @param broker the data broker.
  86      * @param datastoreType the data store type.
  87      * @param path the wild card path.
  88      * @return the required object.
  89      */
  90     public static <T extends DataObject> Optional<T> read(DataBroker broker, LogicalDatastoreType datastoreType,
  91                                                           InstanceIdentifier<T> path) {
  92         ReadOnlyTransaction tx = broker.newReadOnlyTransaction();
  93         Optional<T> result = Optional.absent();
  94         try {
  95             result = tx.read(datastoreType, path).get();
  96         } catch (InterruptedException | ExecutionException e) {
  97             throw new RuntimeException(e);
  98         } finally {
  99             tx.close();
 100         }
 101         return result;
 102     }
 103
 104     /**
 105      * Retrieves the Interface from the datastore.
 106      * @param broker the data broker
 107      * @param interfaceName the interface name
 108      * @return the interface.
 109      */
 110     public static org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces
 111         .Interface getInterface(DataBroker broker, String interfaceName) {
 112         Optional<org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces
 113             .Interface> optInterface =
 114                 read(broker, LogicalDatastoreType.CONFIGURATION, getInterfaceIdentifier(interfaceName));
 115         if (optInterface.isPresent()) {
 116             return optInterface.get();
 117         }
 118         return null;
 119     }
 120
 121     /**
 122      * Builds the interface identifier.
 123      * @param interfaceName the interface name.
 124      * @return the interface identifier.
 125      */
 126     public static InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508
 127             .interfaces.Interface> getInterfaceIdentifier(String interfaceName) {
 128         return InstanceIdentifier.builder(Interfaces.class)
 129                 .child(
 130                         org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces
 131                                 .Interface.class, new InterfaceKey(interfaceName)).build();
 132     }
 133
 134     public String bytesToHexString(byte[] bytes) {
 135         if (bytes == null) {
 136             return "null";
 137         }
 138         StringBuffer buf = new StringBuffer();
 139         for (int i = 0; i < bytes.length; i++) {
 140             if (i > 0) {
 141                 buf.append(":");
 142             }
 143             short u8byte = (short) (bytes[i] & 0xff);
 144             String tmp = Integer.toHexString(u8byte);
 145             if (tmp.length() == 1) {
 146                 buf.append("0");
 147             }
 148             buf.append(tmp);
 149         }
 150         return buf.toString();
 151     }
 152
 153     public byte[] bytesFromHexString(String values) {
 154         String target = "";
 155         if (values != null) {
 156             target = values;
 157         }
 158         String[] octets = target.split(":");
 159
 160         byte[] ret = new byte[octets.length];
 161         for (int i = 0; i < octets.length; i++) {
 162             ret[i] = Integer.valueOf(octets[i], 16).byteValue();
 163         }
 164         return ret;
 165     }
 166
 167     public int calcIcmpv6Checksum(byte[] packet, Ipv6Header ip6Hdr) {
 168         long checksum = getSummation(ip6Hdr.getSourceIpv6());
 169         checksum += getSummation(ip6Hdr.getDestinationIpv6());
 170         checksum = normalizeChecksum(checksum);
 171
 172         checksum += ip6Hdr.getIpv6Length();
 173         checksum += ip6Hdr.getNextHeader();
 174
 175         int icmp6Offset = Ipv6Constants.ICMPV6_OFFSET;
 176         long value = (((packet[icmp6Offset] & 0xff) << 8) | (packet[icmp6Offset + 1] & 0xff));
 177         checksum += value;
 178         checksum = normalizeChecksum(checksum);
 179         icmp6Offset += 2;
 180
 181         //move to icmp6 payload skipping the checksum field
 182         icmp6Offset += 2;
 183         int length = packet.length - icmp6Offset;
 184         while (length > 1) {
 185             value = (((packet[icmp6Offset] & 0xff) << 8) | (packet[icmp6Offset + 1] & 0xff));
 186             checksum += value;
 187             checksum = normalizeChecksum(checksum);
 188             icmp6Offset += 2;
 189             length -= 2;
 190         }
 191
 192         if (length > 0) {
 193             checksum += packet[icmp6Offset];
 194             checksum = normalizeChecksum(checksum);
 195         }
 196
 197         int finalChecksum = (int)(~checksum & 0xffff);
 198         return finalChecksum;
 199     }
 200
 201     public boolean validateChecksum(byte[] packet, Ipv6Header ip6Hdr, int recvChecksum) {
 202         int checksum = calcIcmpv6Checksum(packet, ip6Hdr);
 203
 204         if (checksum == recvChecksum) {
 205             return true;
 206         }
 207         return false;
 208     }
 209
 210     private long getSummation(Ipv6Address addr) {
 211         byte[] baddr = null;
 212         try {
 213             baddr = InetAddress.getByName(addr.getValue()).getAddress();
 214         } catch (UnknownHostException e) {
 215             LOG.error("getSummation: Failed to deserialize address {}", addr.getValue(), e);
 216         }
 217
 218         long sum = 0;
 219         int len = 0;
 220         long value = 0;
 221         while (len < baddr.length) {
 222             value = (((baddr[len] & 0xff) << 8) | (baddr[len + 1] & 0xff));
 223             sum += value;
 224             sum = normalizeChecksum(sum);
 225             len += 2;
 226         }
 227         return sum;
 228     }
 229
 230     private long normalizeChecksum(long value) {
 231         if ((value & 0xffff0000) > 0) {
 232             value = (value & 0xffff);
 233             value += 1;
 234         }
 235         return value;
 236     }
 237
 238     public byte[] convertEthernetHeaderToByte(EthernetHeader ethPdu) {
 239         byte[] data = new byte[16];
 240         Arrays.fill(data, (byte)0);
 241
 242         ByteBuffer buf = ByteBuffer.wrap(data);
 243         buf.put(bytesFromHexString(ethPdu.getDestinationMac().getValue().toString()));
 244         buf.put(bytesFromHexString(ethPdu.getSourceMac().getValue().toString()));
 245         buf.putShort((short)ethPdu.getEthertype().intValue());
 246         return data;
 247     }
 248
 249     public byte[] convertIpv6HeaderToByte(Ipv6Header ip6Pdu) {
 250         byte[] data = new byte[128];
 251         Arrays.fill(data, (byte)0);
 252
 253         ByteBuffer buf = ByteBuffer.wrap(data);
 254         long flowLabel = (((long)(ip6Pdu.getVersion().shortValue() & 0x0f) << 28)
 255                 | (ip6Pdu.getFlowLabel().longValue() & 0x0fffffff));
 256         buf.putInt((int)flowLabel);
 257         buf.putShort((short)ip6Pdu.getIpv6Length().intValue());
 258         buf.put((byte)ip6Pdu.getNextHeader().shortValue());
 259         buf.put((byte)ip6Pdu.getHopLimit().shortValue());
 260         try {
 261             byte[] baddr = InetAddress.getByName(ip6Pdu.getSourceIpv6().getValue()).getAddress();
 262             buf.put(baddr);
 263             baddr = InetAddress.getByName(ip6Pdu.getDestinationIpv6().getValue()).getAddress();
 264             buf.put(baddr);
 265         } catch (UnknownHostException e) {
 266             LOG.error("convertIpv6HeaderToByte: Failed to serialize src, dest address", e);
 267         }
 268         return data;
 269     }
 270
 271     public Ipv6Address getIpv6LinkLocalAddressFromMac(MacAddress mac) {
 272         byte[] octets = bytesFromHexString(mac.getValue());
 273
 274         /* As per the RFC2373, steps involved to generate a LLA include
 275            1. Convert the 48 bit MAC address to 64 bit value by inserting 0xFFFE
 276               between OUI and NIC Specific part.
 277            2. Invert the Universal/Local flag in the OUI portion of the address.
 278            3. Use the prefix "FE80::/10" along with the above 64 bit Interface
 279               identifier to generate the IPv6 LLA. */
 280
 281         StringBuffer interfaceID = new StringBuffer();
 282         short u8byte = (short) (octets[0] & 0xff);
 283         u8byte ^= 1 << 1;
 284         interfaceID.append(Integer.toHexString(0xFF & u8byte));
 285         interfaceID.append(StringUtils.leftPad(Integer.toHexString(0xFF & octets[1]), 2, "0"));
 286         interfaceID.append(":");
 287         interfaceID.append(Integer.toHexString(0xFF & octets[2]));
 288         interfaceID.append("ff:fe");
 289         interfaceID.append(StringUtils.leftPad(Integer.toHexString(0xFF & octets[3]), 2, "0"));
 290         interfaceID.append(":");
 291         interfaceID.append(Integer.toHexString(0xFF & octets[4]));
 292         interfaceID.append(StringUtils.leftPad(Integer.toHexString(0xFF & octets[5]), 2, "0"));
 293
 294         Ipv6Address ipv6LLA = new Ipv6Address("fe80:0:0:0:" + interfaceID.toString());
 295         return ipv6LLA;
 296     }
 297
 298     private static List<MatchInfo> getIcmpv6RSMatch(String vmMacAddress) {
 299         List<MatchInfo> matches = new ArrayList<>();
 300         matches.add(new MatchInfo(MatchFieldType.eth_src,
 301                 new String[] { vmMacAddress }));
 302         matches.add(new MatchInfo(MatchFieldType.eth_type,
 303                 new long[] { NwConstants.ETHTYPE_IPV6 }));
 304         matches.add(new MatchInfo(MatchFieldType.ip_proto,
 305                 new long[] { IPProtocols.IPV6ICMP.intValue() }));
 306         matches.add(new MatchInfo(MatchFieldType.icmp_v6,
 307                 new long[] { Ipv6Constants.ICMP_V6_RS_CODE, 0}));
 308         return matches;
 309     }
 310
 311     private List<MatchInfo> getIcmpv6NSMatch(String vmMacAddress, String ndTarget) {
 312         List<MatchInfo> matches = new ArrayList<>();
 313         matches.add(new MatchInfo(MatchFieldType.eth_src,
 314                 new String[] { vmMacAddress }));
 315         matches.add(new MatchInfo(MatchFieldType.eth_type,
 316                 new long[] { NwConstants.ETHTYPE_IPV6 }));
 317         matches.add(new MatchInfo(MatchFieldType.ip_proto,
 318                 new long[] { IPProtocols.IPV6ICMP.intValue() }));
 319         matches.add(new MatchInfo(MatchFieldType.icmp_v6,
 320                 new long[] { Ipv6Constants.ICMP_V6_NS_CODE, 0}));
 321         matches.add(new MatchInfo(MatchFieldType.ipv6_nd_target,
 322                 new String[] { ndTarget }));
 323         return matches;
 324     }
 325
 326     private static String getIPv6FlowRef(BigInteger dpId, String vmMacAddress, String flowType) {
 327         return new StringBuffer().append(Ipv6Constants.FLOWID_PREFIX)
 328                 .append(dpId).append(Ipv6Constants.FLOWID_SEPARATOR)
 329                 .append(vmMacAddress).append(flowType).toString();
 330     }
 331
 332     private static void installRsPuntFlow(String interfaceName, short tableId, BigInteger dpId, String vmMacAddress,
 333                                           IMdsalApiManager mdsalUtil, int addOrRemove) {
 334         List<MatchInfo> routerSolicitationMatch = getIcmpv6RSMatch(vmMacAddress);
 335         List<InstructionInfo> instructions = new ArrayList<>();
 336         List<ActionInfo> actionsInfos = new ArrayList<>();
 337         // Punt to controller
 338         actionsInfos.add(new ActionInfo(ActionType.punt_to_controller,
 339                 new String[] {}));
 340         instructions.add(new InstructionInfo(InstructionType.write_actions,
 341                 actionsInfos));
 342         FlowEntity rsFlowEntity = MDSALUtil.buildFlowEntity(dpId, tableId,
 343                 getIPv6FlowRef(dpId, vmMacAddress, "IPv6RS"),Ipv6Constants.DEFAULT_FLOW_PRIORITY, "IPv6RS", 0, 0,
 344                 NwConstants.COOKIE_IPV6_TABLE, routerSolicitationMatch, instructions);
 345         if (addOrRemove == Ipv6Constants.DEL_FLOW) {
 346             LOG.trace("Removing IPv6 Router Solicitation Flow DpId {}, vmMacAddress {}", dpId, vmMacAddress);
 347             mdsalUtil.removeFlow(rsFlowEntity);
 348         } else {
 349             LOG.trace("Installing IPv6 Router Solicitation Flow DpId {}, vmMacAddress {}", dpId, vmMacAddress);
 350             mdsalUtil.installFlow(rsFlowEntity);
 351         }
 352     }
 353
 354     public void installIcmpv6NsPuntFlow(short tableId, BigInteger dpId, String vmMacAddress,
 355                                         String ipv6Address, IMdsalApiManager mdsalUtil, int addOrRemove) {
 356         List<MatchInfo> neighborSolicitationMatch = getIcmpv6NSMatch(vmMacAddress, ipv6Address);
 357         List<InstructionInfo> instructions = new ArrayList<>();
 358         List<ActionInfo> actionsInfos = new ArrayList<>();
 359         actionsInfos.add(new ActionInfo(ActionType.punt_to_controller,
 360                 new String[] {}));
 361         instructions.add(new InstructionInfo(InstructionType.write_actions,
 362                 actionsInfos));
 363         FlowEntity rsFlowEntity = MDSALUtil.buildFlowEntity(dpId, tableId,
 364                 getIPv6FlowRef(dpId, vmMacAddress, ipv6Address),Ipv6Constants.DEFAULT_FLOW_PRIORITY, "IPv6NS",
 365                 0, 0, NwConstants.COOKIE_IPV6_TABLE, neighborSolicitationMatch, instructions);
 366         if (addOrRemove == Ipv6Constants.DEL_FLOW) {
 367             LOG.trace("Removing IPv6 Neighbor Solicitation Flow DpId {}, vmMacAddress {}", dpId, vmMacAddress);
 368             mdsalUtil.removeFlow(rsFlowEntity);
 369         } else {
 370             LOG.trace("Installing IPv6 Neighbor Solicitation Flow DpId {}, vmMacAddress {}", dpId, vmMacAddress);
 371             mdsalUtil.installFlow(rsFlowEntity);
 372         }
 373     }
 374
 375     public void installIcmpv6RsPuntFlow(short tableId, BigInteger dpId, String vmMacAddress,
 376                                           IMdsalApiManager mdsalUtil, int addOrRemove) {
 377         if (dpId == null || dpId.equals(Ipv6Constants.INVALID_DPID)) {
 378             return;
 379         }
 380         List<MatchInfo> routerSolicitationMatch = getIcmpv6RSMatch(vmMacAddress);
 381         List<InstructionInfo> instructions = new ArrayList<>();
 382         List<ActionInfo> actionsInfos = new ArrayList<>();
 383         // Punt to controller
 384         actionsInfos.add(new ActionInfo(ActionType.punt_to_controller,
 385                 new String[] {}));
 386         instructions.add(new InstructionInfo(InstructionType.write_actions,
 387                 actionsInfos));
 388         FlowEntity rsFlowEntity = MDSALUtil.buildFlowEntity(dpId, tableId,
 389                 getIPv6FlowRef(dpId, vmMacAddress, "IPv6RS"),Ipv6Constants.DEFAULT_FLOW_PRIORITY, "IPv6RS", 0, 0,
 390                 NwConstants.COOKIE_IPV6_TABLE, routerSolicitationMatch, instructions);
 391         if (addOrRemove == Ipv6Constants.DEL_FLOW) {
 392             LOG.trace("Removing IPv6 Router Solicitation Flow DpId {}, vmMacAddress {}", dpId, vmMacAddress);
 393             mdsalUtil.removeFlow(rsFlowEntity);
 394         } else {
 395             LOG.trace("Installing IPv6 Router Solicitation Flow DpId {}, vmMacAddress {}", dpId, vmMacAddress);
 396             mdsalUtil.installFlow(rsFlowEntity);
 397         }
 398     }
 399
 400     public BoundServices getBoundServices(String serviceName, short servicePriority, int flowPriority,
 401                                           BigInteger cookie, List<Instruction> instructions) {
 402         StypeOpenflowBuilder augBuilder = new StypeOpenflowBuilder().setFlowCookie(cookie)
 403                 .setFlowPriority(flowPriority).setInstruction(instructions);
 404         return new BoundServicesBuilder().setKey(new BoundServicesKey(servicePriority))
 405                 .setServiceName(serviceName).setServicePriority(servicePriority)
 406                 .setServiceType(ServiceTypeFlowBased.class)
 407                 .addAugmentation(StypeOpenflow.class, augBuilder.build()).build();
 408     }
 409
 410     private InstanceIdentifier buildServiceId(String interfaceName,
 411                                               short priority) {
 412         return InstanceIdentifier.builder(ServiceBindings.class).child(ServicesInfo.class,
 413                 new ServicesInfoKey(interfaceName, ServiceModeIngress.class))
 414                 .child(BoundServices.class, new BoundServicesKey(priority)).build();
 415     }
 416
 417     public void bindIpv6Service(DataBroker broker, String interfaceName, short tableId) {
 418         int instructionKey = 0;
 419         List<Instruction> instructions = new ArrayList<>();
 420         instructions.add(MDSALUtil.buildAndGetGotoTableInstruction(tableId, ++instructionKey));
 421         short serviceIndex = ServiceIndex.getIndex(NwConstants.IPV6_SERVICE_NAME, NwConstants.IPV6_SERVICE_INDEX);
 422         BoundServices
 423                 serviceInfo =
 424                 getBoundServices(String.format("%s.%s", "ipv6", interfaceName),
 425                         serviceIndex, Ipv6Constants.DEFAULT_FLOW_PRIORITY,
 426                         NwConstants.COOKIE_IPV6_TABLE, instructions);
 427         MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION,
 428                 buildServiceId(interfaceName, serviceIndex), serviceInfo);
 429     }
 430
 431     public void unbindIpv6Service(DataBroker broker, String interfaceName) {
 432         MDSALUtil.syncDelete(broker, LogicalDatastoreType.CONFIGURATION,
 433                 buildServiceId(interfaceName, ServiceIndex.getIndex(NwConstants.IPV6_SERVICE_NAME,
 434                         NwConstants.IPV6_SERVICE_INDEX)));
 435     }
 436 }