openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/util/HashUtil.java

   1 /*
   2  * Copyright (c) 2015 Cisco Systems, 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.openflowplugin.impl.util;
  10
  11 import java.math.BigInteger;
  12 import java.util.StringTokenizer;
  13 import org.opendaylight.openflowplugin.api.openflow.device.DeviceContext;
  14 import org.opendaylight.openflowplugin.api.openflow.md.util.OpenflowVersion;
  15 import org.opendaylight.openflowplugin.openflow.md.util.OpenflowPortsUtil;
  16 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpVersion;
  17 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Ipv4Prefix;
  18 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Ipv6Address;
  19 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Ipv6Prefix;
  20 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.PortNumber;
  21 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev100924.MacAddress;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.flow.Match;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.l2.types.rev130827.VlanPcp;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.arp.match.fields.ArpSourceHardwareAddress;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.arp.match.fields.ArpTargetHardwareAddress;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.ethernet.match.fields.EthernetDestination;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.ethernet.match.fields.EthernetSource;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.ethernet.match.fields.EthernetType;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.EthernetMatch;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.Icmpv4Match;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.Icmpv6Match;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.IpMatch;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.Layer3Match;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.Layer4Match;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.Metadata;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.ProtocolMatchFields;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.TcpFlagMatch;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.Tunnel;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.VlanMatch;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.layer._3.match.ArpMatch;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.layer._3.match.Ipv4Match;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.layer._3.match.Ipv6Match;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.layer._3.match.TunnelIpv4Match;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.layer._4.match.SctpMatch;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.layer._4.match.TcpMatch;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.layer._4.match.UdpMatch;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.protocol.match.fields.Pbb;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.vlan.match.fields.VlanId;
  50 import org.slf4j.Logger;
  51 import org.slf4j.LoggerFactory;
  52
  53 /**
  54  * Created by Martin Bobak &lt;mbobak@cisco.com&gt; on 8.4.2015.
  55  */
  56 public final class HashUtil {
  57
  58     private static final Logger LOG = LoggerFactory.getLogger(HashUtil.class);
  59     private static final int BASE_16 = 16;
  60     private static final int BASE_10 = 10;
  61     private static final int IPV6_TOKENS_COUNT = 8;
  62     public static final String IPV6_TOKEN = ":0000";
  63
  64     private HashUtil() {
  65
  66         throw new IllegalStateException("This class should not be instantiated.");
  67     }
  68
  69     public static int calculateEthernetMatchHash(EthernetMatch ethernetMatch) {
  70         int hash = 0;
  71
  72         EthernetType ethernetType = ethernetMatch.getEthernetType();
  73         if (null != ethernetType) {
  74             hash += ethernetType.getType().getValue();
  75         }
  76
  77         EthernetDestination ethernetDestination = ethernetMatch.getEthernetDestination();
  78         if (null != ethernetDestination) {
  79             hash += calculateEthernetDestinationHash(ethernetDestination);
  80         }
  81
  82         EthernetSource ethernetSource = ethernetMatch.getEthernetSource();
  83         if (null != ethernetSource) {
  84             hash += calculateEthenetSourceHash(ethernetSource);
  85         }
  86
  87         return hash;
  88     }
  89
  90     public static int calculateEthenetSourceHash(EthernetSource ethernetSource) {
  91         int hash = calculateMacAddressHash(ethernetSource.getAddress());
  92         hash += calculateMacAddressHash(ethernetSource.getMask());
  93         return hash;
  94     }
  95
  96     public static int calculateEthernetDestinationHash(EthernetDestination ethernetDestination) {
  97         int hash = calculateMacAddressHash(ethernetDestination.getAddress());
  98         hash += calculateMacAddressHash(ethernetDestination.getMask());
  99         return hash;
 100     }
 101
 102     public static int calculateMacAddressHash(MacAddress macAddress) {
 103
 104         int hash = 0;
 105         if (null != macAddress) {
 106             StringTokenizer stringTokenizer = new StringTokenizer(macAddress.getValue(), ":");
 107             hash = parseTokens(stringTokenizer, BASE_16);
 108         }
 109         LOG.trace("Calculated hash {} for mac {}", hash, macAddress);
 110         return hash;
 111     }
 112
 113     public static int calculateMatchHash(final Match match, DeviceContext deviceContext) {
 114         int hash = 0;
 115         int subHash = 0;
 116         int base = 0;
 117         if (null != match) {
 118             if (null != match.getEthernetMatch()) {
 119                 hash = 1 << base;
 120                 subHash += calculateEthernetMatchHash(match.getEthernetMatch());
 121             }
 122             base++;
 123             if (null != match.getIcmpv4Match()) {
 124                 hash = 1 << base;
 125                 subHash += calculateIcmpV4MatchHash(match.getIcmpv4Match());
 126             }
 127             base++;
 128             if (null != match.getIcmpv6Match()) {
 129                 hash = 1 << base;
 130                 subHash += calculateIcmpV6MatchHash(match.getIcmpv6Match());
 131             }
 132             base++;
 133             if (null != match.getInPhyPort()) {
 134                 hash = 1 << base;
 135                 subHash += calculateNodeConnectorIdHash(match.getInPhyPort(), deviceContext);
 136             }
 137             base++;
 138             if (null != match.getInPort()) {
 139                 hash = 1 << base;
 140                 subHash += calculateNodeConnectorIdHash(match.getInPort(), deviceContext);
 141             }
 142             base++;
 143             if (null != match.getIpMatch()) {
 144                 hash = 1 << base;
 145                 subHash += calculateIpMatchHash(match.getIpMatch());
 146             }
 147             base++;
 148             if (null != match.getLayer3Match()) {
 149                 hash = 1 << base;
 150                 subHash += calculateLayer3MatchHash(match.getLayer3Match());
 151             }
 152             base++;
 153             if (null != match.getLayer4Match()) {
 154                 hash = 1 << base;
 155                 subHash += calculateLayer4MatchHash(match.getLayer4Match());
 156             }
 157             base++;
 158             if (null != match.getIcmpv6Match()) {
 159                 hash = 1 << base;
 160                 subHash += calculateIcmpv6MatchHash(match.getIcmpv6Match());
 161             }
 162             base++;
 163             if (null != match.getMetadata()) {
 164                 hash = 1 << base;
 165                 subHash += calculateMetadataHash(match.getMetadata());
 166             }
 167             base++;
 168             if (null != match.getProtocolMatchFields()) {
 169                 hash = 1 << base;
 170                 subHash += calculateProtocolMatchFieldsHash(match.getProtocolMatchFields());
 171             }
 172             base++;
 173             if (null != match.getTcpFlagMatch()) {
 174                 hash = 1 << base;
 175                 subHash += calculateTcpFlagMatch(match.getTcpFlagMatch());
 176             }
 177             base++;
 178             if (null != match.getVlanMatch()) {
 179                 hash = 1 << base;
 180                 subHash += calculateVlanMatchHash(match.getVlanMatch());
 181             }
 182             base++;
 183             if (null != match.getTunnel()) {
 184                 hash = 1 << base;
 185                 subHash += calculateTunnelHash(match.getTunnel());
 186             }
 187         }
 188         return hash + subHash;
 189     }
 190
 191     private static int calculateTunnelHash(final Tunnel tunnel) {
 192         int hash = 0;
 193         BigInteger tunnelId = tunnel.getTunnelId();
 194         if (null != tunnelId) {
 195             hash += tunnelId.intValue();
 196         }
 197
 198         BigInteger tunnelMask = tunnel.getTunnelMask();
 199         if (null != tunnelMask) {
 200             hash += tunnelMask.intValue();
 201         }
 202         return hash;
 203     }
 204
 205     private static int calculateVlanMatchHash(final VlanMatch vlanMatch) {
 206         int hash = 0;
 207
 208         VlanId vlanId = vlanMatch.getVlanId();
 209         if (null != vlanId) {
 210             hash += vlanId.getVlanId().getValue().intValue();
 211         }
 212
 213         VlanPcp vlanPcp = vlanMatch.getVlanPcp();
 214         if (null != vlanPcp) {
 215             hash += vlanPcp.getValue().shortValue();
 216         }
 217
 218         return hash;
 219     }
 220
 221     private static int calculateTcpFlagMatch(final TcpFlagMatch tcpFlagMatch) {
 222         int hash = tcpFlagMatch.getTcpFlag().intValue();
 223         return hash;
 224     }
 225
 226     private static int calculateProtocolMatchFieldsHash(final ProtocolMatchFields protocolMatchFields) {
 227         int hash = 0;
 228         Short mplsBos = protocolMatchFields.getMplsBos();
 229         if (null != mplsBos) {
 230             hash += mplsBos.intValue();
 231         }
 232         Short mplsTc = protocolMatchFields.getMplsTc();
 233         if (null != mplsTc) {
 234             hash += mplsTc.intValue();
 235         }
 236         Pbb pbb = protocolMatchFields.getPbb();
 237         if (null != pbb) {
 238             if (null != pbb.getPbbIsid()) {
 239                 hash += pbb.getPbbIsid().intValue();
 240             }
 241             if (null != pbb.getPbbMask()) {
 242                 hash += pbb.getPbbMask().intValue();
 243             }
 244         }
 245         Long mplsLabel = protocolMatchFields.getMplsLabel();
 246         if (null != mplsLabel) {
 247             hash += mplsLabel.intValue();
 248         }
 249         return hash;
 250     }
 251
 252     private static int calculateMetadataHash(final Metadata metadata) {
 253         int hash = metadata.getMetadata().intValue();
 254         if (null != metadata.getMetadataMask()) {
 255             hash += metadata.getMetadataMask().intValue();
 256         }
 257         return hash;
 258     }
 259
 260     private static int calculateIcmpv6MatchHash(final Icmpv6Match icmpv6Match) {
 261         int hash = icmpv6Match.getIcmpv6Code().intValue();
 262         hash += icmpv6Match.getIcmpv6Type().intValue();
 263         return hash;
 264     }
 265
 266     private static int calculateLayer4MatchHash(final Layer4Match layer4Match) {
 267         int hash = 0;
 268         if (layer4Match instanceof SctpMatch) {
 269             hash += calculateSctpMatchHash((SctpMatch) layer4Match);
 270         }
 271
 272         if (layer4Match instanceof TcpMatch) {
 273             hash += calculateTcpMatchHash((TcpMatch) layer4Match);
 274         }
 275         if (layer4Match instanceof UdpMatch) {
 276             hash += calculateUdpMatchHash((UdpMatch) layer4Match);
 277         }
 278         return hash;
 279     }
 280
 281     private static int calculateUdpMatchHash(final UdpMatch layer4Match) {
 282         int hash = 0;
 283         return hash;
 284     }
 285
 286     private static int calculateTcpMatchHash(final TcpMatch layer4Match) {
 287         int hash = 0;
 288         PortNumber sourcePort = layer4Match.getTcpSourcePort();
 289         if (null != sourcePort) {
 290             hash += sourcePort.getValue().intValue();
 291         }
 292
 293         PortNumber destinationPort = layer4Match.getTcpDestinationPort();
 294         if (null != destinationPort) {
 295             hash += destinationPort.getValue().intValue();
 296         }
 297         return hash;
 298     }
 299
 300     private static int calculateSctpMatchHash(final SctpMatch layer4Match) {
 301         int hash = 0;
 302
 303         PortNumber portNumber = layer4Match.getSctpDestinationPort();
 304         if (null != portNumber) {
 305             hash += portNumber.getValue().intValue();
 306         }
 307
 308         PortNumber sourcePort = layer4Match.getSctpSourcePort();
 309         if (null != sourcePort) {
 310             hash += sourcePort.getValue().intValue();
 311         }
 312         return hash;
 313     }
 314
 315     private static int calculateLayer3MatchHash(final Layer3Match layer3Match) {
 316         int hash = 0;
 317         if (layer3Match instanceof ArpMatch) {
 318             hash += calculateArpMatchHash((ArpMatch) layer3Match);
 319         }
 320         if (layer3Match instanceof Ipv4Match) {
 321             hash += calculateIpv4MatchHash((Ipv4Match) layer3Match);
 322         }
 323         if (layer3Match instanceof Ipv6Match) {
 324             hash += calculateIpv6MatchHash((Ipv6Match) layer3Match);
 325
 326         }
 327         if (layer3Match instanceof TunnelIpv4Match) {
 328             hash += calculateTunnelIpv4Hash((TunnelIpv4Match) layer3Match);
 329         }
 330         return hash;
 331     }
 332
 333     private static int calculateTunnelIpv4Hash(final TunnelIpv4Match layer3Match) {
 334         Ipv4Prefix tunnelIpv4Destination = layer3Match.getTunnelIpv4Destination();
 335         int hash = calculateIpv4PrefixHash(tunnelIpv4Destination);
 336         Ipv4Prefix tunnelIpv4Source = layer3Match.getTunnelIpv4Source();
 337         hash += calculateIpv4PrefixHash(tunnelIpv4Source);
 338         return hash;
 339     }
 340
 341     private static int calculateIpv6MatchHash(final Ipv6Match layer3Match) {
 342         int hash = 0;
 343         Ipv6Prefix ipv6Destination = layer3Match.getIpv6Destination();
 344         if (null != ipv6Destination) {
 345             hash += calculateIpv6PrefixHash(ipv6Destination);
 346         }
 347
 348         if (null != layer3Match.getIpv6Source()) {
 349             hash += calculateIpv6PrefixHash(layer3Match.getIpv6Source());
 350         }
 351
 352         if (null != layer3Match.getIpv6ExtHeader()) {
 353             hash += layer3Match.getIpv6ExtHeader().getIpv6Exthdr();
 354             hash += layer3Match.getIpv6ExtHeader().getIpv6ExthdrMask();
 355         }
 356
 357         if (null != layer3Match.getIpv6NdSll()) {
 358             hash += calculateMacAddressHash(layer3Match.getIpv6NdSll());
 359         }
 360         if (null != layer3Match.getIpv6NdTll()) {
 361             hash += calculateMacAddressHash(layer3Match.getIpv6NdTll());
 362         }
 363         if (null != layer3Match.getIpv6NdTarget()){
 364             hash += calculateIpv6AddressHash(layer3Match.getIpv6NdTarget());
 365         }
 366         return hash;
 367     }
 368
 369
 370     public static int calculateIpv6PrefixHash(final Ipv6Prefix ipv6Prefix) {
 371
 372         StringTokenizer stringTokenizer = getStringTokenizerWithFullAddressString(ipv6Prefix.getValue());
 373
 374         int hash = parseTokens(stringTokenizer, BASE_16);
 375         return hash;
 376     }
 377     public static int calculateIpv6AddressHash(final Ipv6Address ipv6Address) {
 378
 379         StringTokenizer stringTokenizer = getStringTokenizerWithFullAddressString(ipv6Address.getValue());
 380
 381         int hash = parseTokens(stringTokenizer, BASE_16);
 382         return hash;
 383     }
 384
 385     private static StringTokenizer getStringTokenizerWithFullAddressString(String value) {
 386         String ipv6Value = value.replace("::", ":0000:");
 387         StringTokenizer stringTokenizer = new StringTokenizer(ipv6Value, ":");
 388
 389         int delta = IPV6_TOKENS_COUNT - stringTokenizer.countTokens();
 390
 391         StringBuffer additions = new StringBuffer();
 392
 393         if (delta > 0) {
 394             while (delta > 0) {
 395                 additions.append(IPV6_TOKEN);
 396                 delta--;
 397             }
 398             if (ipv6Value.contains("/")) {
 399                 ipv6Value = ipv6Value.replace("/", additions.toString() + "/");
 400             } else {
 401                 ipv6Value += additions.toString();
 402             }
 403             stringTokenizer = new StringTokenizer(ipv6Value, ":");
 404         }
 405         return stringTokenizer;
 406     }
 407
 408     private static int calculateStopperBasedOnMaskValue(final Ipv6Prefix ipv6Prefix, int bitsBase) {
 409         double maskValue = extractMask(ipv6Prefix);
 410         double bitCount = maskValue / bitsBase;
 411         return (int) Math.ceil(bitCount);
 412     }
 413
 414     private static int extractMask(final Ipv6Prefix ipv6Prefix) {
 415         StringTokenizer maskTokenizer = new StringTokenizer(ipv6Prefix.getValue(), "/");
 416         int mask = 0;
 417         if (maskTokenizer.countTokens() > 1) {
 418             maskTokenizer.nextToken();
 419             mask = Integer.parseInt(maskTokenizer.nextToken());
 420         }
 421         return mask;
 422     }
 423
 424     private static int parseTokens(final StringTokenizer stringTokenizer, int base) {
 425         return parseTokens(stringTokenizer, 0, base);
 426     }
 427
 428     private static int parseTokens(final StringTokenizer stringTokenizer, int stopper, int base) {
 429         int hash = 0;
 430         if (stringTokenizer.countTokens() > 0) {
 431             int step = 0;
 432             while (stringTokenizer.hasMoreTokens()) {
 433                 String token = stringTokenizer.nextToken();
 434                 step++;
 435
 436                 if (token.equals("")) {
 437                     token = "0";
 438                 }
 439
 440                 if (token.contains("/")) {
 441                     StringTokenizer tokenizer = new StringTokenizer(token, "/");
 442                     hash = hash ^ parseTokens(tokenizer, stopper, base);
 443                 } else {
 444                     hash = hash ^ ((Integer.parseInt(token, base) * step) + step);
 445                     if (stopper > 0 && step == stopper) {
 446                         break;
 447                     }
 448                 }
 449             }
 450         }
 451         return hash;
 452     }
 453
 454     private static int calculateIpv4MatchHash(final Ipv4Match layer3Match) {
 455         int hash = 0;
 456         Ipv4Prefix ipv4Destination = layer3Match.getIpv4Destination();
 457         if (null != ipv4Destination) {
 458             hash += calculateIpv4PrefixHash(ipv4Destination);
 459         }
 460
 461         Ipv4Prefix ipv4Source = layer3Match.getIpv4Source();
 462
 463         if (null != ipv4Source) {
 464             hash += calculateIpv4PrefixHash(ipv4Source);
 465         }
 466
 467         //TODO : add calculation of hashes for augmentations
 468         return hash;
 469     }
 470
 471     private static int calculateArpMatchHash(final ArpMatch layer3Match) {
 472         int hash = 0;
 473         Integer arpOp = layer3Match.getArpOp();
 474         if (null != arpOp) {
 475             hash += arpOp.intValue();
 476         }
 477         ArpSourceHardwareAddress arpSourceHardwareAddress = layer3Match.getArpSourceHardwareAddress();
 478         if (null != arpSourceHardwareAddress) {
 479             hash += calculateMacAddressHash(arpSourceHardwareAddress.getAddress());
 480             hash += calculateMacAddressHash(arpSourceHardwareAddress.getMask());
 481         }
 482
 483         Ipv4Prefix sourceTransportAddress = layer3Match.getArpSourceTransportAddress();
 484         if (null != sourceTransportAddress) {
 485             hash += calculateIpv4PrefixHash(sourceTransportAddress);
 486         }
 487
 488         ArpTargetHardwareAddress arpTargetHardwareAddress = layer3Match.getArpTargetHardwareAddress();
 489         if (null != arpTargetHardwareAddress) {
 490             hash += calculateMacAddressHash(arpTargetHardwareAddress.getAddress());
 491             hash += calculateMacAddressHash(arpTargetHardwareAddress.getMask());
 492         }
 493
 494         Ipv4Prefix targetTransportAddress = layer3Match.getArpTargetTransportAddress();
 495         if (null != targetTransportAddress) {
 496             hash += calculateIpv4PrefixHash(targetTransportAddress);
 497         }
 498
 499         return hash;
 500     }
 501
 502     public static int calculateIpv4PrefixHash(final Ipv4Prefix ipv4Prefix) {
 503         int hash = 0;
 504         StringTokenizer prefixAsArray = new StringTokenizer(ipv4Prefix.getValue(), "/");
 505         if (prefixAsArray.countTokens() == 2) {
 506             String address = prefixAsArray.nextToken();
 507             Integer mask = Integer.parseInt(prefixAsArray.nextToken());
 508             int numberOfAddressPartsToUse = (int) Math.ceil(mask.doubleValue() / 8);
 509             hash += calculateIpAdressHash(address, numberOfAddressPartsToUse, BASE_10);
 510             hash += mask.shortValue();
 511         }
 512         return hash;
 513     }
 514
 515
 516     private static int calculateIpAdressHash(final String address, int numberOfParts, int base) {
 517         StringTokenizer stringTokenizer = new StringTokenizer(address, ".");
 518         int hash = parseTokens(stringTokenizer, numberOfParts, base);
 519         return hash;
 520     }
 521
 522     private static int calculateIpMatchHash(final IpMatch ipMatch) {
 523         int hash = 0;
 524         Short ipEcn = ipMatch.getIpEcn();
 525         if (null != ipEcn) {
 526             hash += ipEcn.shortValue();
 527         }
 528         Short ipProtocol = ipMatch.getIpProtocol();
 529         if (null != ipProtocol) {
 530             hash += ipProtocol;
 531         }
 532
 533         Short ipDscp = ipMatch.getIpDscp().getValue();
 534         if (null != ipDscp) {
 535             hash += ipDscp;
 536         }
 537
 538         IpVersion ipVersion = ipMatch.getIpProto();
 539         if (null != ipVersion) {
 540             hash += ipVersion.getIntValue();
 541         }
 542         return hash;
 543     }
 544
 545     private static int calculateNodeConnectorIdHash(final NodeConnectorId inPhyPort, DeviceContext deviceContext) {
 546         int hash = 0;
 547         short version = deviceContext.getDeviceState().getVersion();
 548         Long portFromLogicalName = OpenflowPortsUtil.getPortFromLogicalName(OpenflowVersion.get(version), inPhyPort.getValue());
 549         hash += portFromLogicalName.intValue();
 550         return hash;
 551     }
 552
 553     private static int calculateIcmpV6MatchHash(final Icmpv6Match icmpv6Match) {
 554         int hash = 0;
 555         if (null != icmpv6Match.getIcmpv6Code()) {
 556             hash += icmpv6Match.getIcmpv6Code();
 557         }
 558         if (null != icmpv6Match.getIcmpv6Type()) {
 559             hash += icmpv6Match.getIcmpv6Type();
 560         }
 561         return hash;
 562     }
 563
 564     public static int calculateIcmpV4MatchHash(final Icmpv4Match icmpv4Match) {
 565         int hash = 0;
 566         if (null != icmpv4Match.getIcmpv4Code()) {
 567             hash += icmpv4Match.getIcmpv4Code();
 568         }
 569         if (null != icmpv4Match.getIcmpv4Type()) {
 570             hash += icmpv4Match.getIcmpv4Type();
 571         }
 572         return hash;
 573     }
 574
 575
 576 }