openflow-protocol-impl/src/test/java/org/opendaylight/openflowjava/protocol/impl/util/OF13MatchSerializerTest.java

   1 /*
   2  * Copyright (c) 2013 Pantheon Technologies s.r.o. 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.openflowjava.protocol.impl.util;
  10
  11 import io.netty.buffer.ByteBuf;
  12 import io.netty.buffer.UnpooledByteBufAllocator;
  13
  14 import java.util.ArrayList;
  15 import java.util.List;
  16
  17 import org.junit.Assert;
  18 import org.junit.Before;
  19 import org.junit.Test;
  20 import org.opendaylight.openflowjava.protocol.api.extensibility.OFSerializer;
  21 import org.opendaylight.openflowjava.protocol.api.extensibility.SerializerRegistry;
  22 import org.opendaylight.openflowjava.protocol.api.keys.MessageTypeKey;
  23 import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
  24 import org.opendaylight.openflowjava.protocol.impl.serialization.SerializerRegistryImpl;
  25 import org.opendaylight.openflowjava.util.ByteBufUtils;
  26 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Ipv4Address;
  27 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Ipv6Address;
  28 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Ipv6FlowLabel;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.ExperimenterIdMatchEntry;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.ExperimenterIdMatchEntryBuilder;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.Ipv4AddressMatchEntry;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.Ipv4AddressMatchEntryBuilder;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.Ipv6AddressMatchEntry;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.Ipv6AddressMatchEntryBuilder;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.Ipv6FlabelMatchEntry;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.Ipv6FlabelMatchEntryBuilder;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.MaskMatchEntry;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.MaskMatchEntryBuilder;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.ExperimenterId;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.StandardMatchType;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.ExperimenterClass;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.Ipv4Src;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.Ipv6Dst;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.Ipv6Flabel;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.Ipv6NdTarget;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.Ipv6Src;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.MatchField;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.OpenflowBasicClass;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.OxmMatchType;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.match.grouping.Match;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.match.grouping.MatchBuilder;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.oxm.fields.grouping.MatchEntries;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.oxm.fields.grouping.MatchEntriesBuilder;
  54 import org.slf4j.Logger;
  55 import org.slf4j.LoggerFactory;
  56
  57 /**
  58  * @author michal.polkorab
  59  *
  60  */
  61 public class OF13MatchSerializerTest {
  62
  63     private static final Logger LOG = LoggerFactory
  64             .getLogger(OF13MatchSerializerTest.class);
  65     private SerializerRegistry registry;
  66     private OFSerializer<Match> matchSerializer;
  67
  68     /**
  69      * Initializes serializer table and stores correct factory in field
  70      */
  71     @Before
  72     public void startUp() {
  73         registry = new SerializerRegistryImpl();
  74         registry.init();
  75         matchSerializer = registry.getSerializer(
  76                 new MessageTypeKey<>(EncodeConstants.OF13_VERSION_ID, Match.class));
  77     }
  78
  79     /**
  80      * Test for correct serialization of Ipv4Address match entry
  81      */
  82     @Test
  83     public void testIpv4Src() {
  84         MatchBuilder builder = new MatchBuilder();
  85         builder.setType(OxmMatchType.class);
  86         List<MatchEntries> entries = new ArrayList<>();
  87         MatchEntriesBuilder entriesBuilder = new MatchEntriesBuilder();
  88         entriesBuilder.setOxmClass(OpenflowBasicClass.class);
  89         entriesBuilder.setOxmMatchField(Ipv4Src.class);
  90         entriesBuilder.setHasMask(false);
  91         Ipv4AddressMatchEntryBuilder addressBuilder = new Ipv4AddressMatchEntryBuilder();
  92         addressBuilder.setIpv4Address(new Ipv4Address("1.2.3.4"));
  93         entriesBuilder.addAugmentation(Ipv4AddressMatchEntry.class, addressBuilder.build());
  94         entries.add(entriesBuilder.build());
  95         builder.setMatchEntries(entries);
  96         Match match = builder.build();
  97
  98         ByteBuf out = UnpooledByteBufAllocator.DEFAULT.buffer();
  99         matchSerializer.serialize(match, out);
 100
 101         Assert.assertEquals("Wrong type", 1, out.readUnsignedShort());
 102         out.skipBytes(EncodeConstants.SIZE_OF_SHORT_IN_BYTES);
 103         Assert.assertEquals("Wrong class", 0x8000, out.readUnsignedShort());
 104         Assert.assertEquals("Wrong field and mask", 22, out.readUnsignedByte());
 105         out.skipBytes(EncodeConstants.SIZE_OF_BYTE_IN_BYTES);
 106         Assert.assertEquals("Wrong ip address (first number)", 1, out.readUnsignedByte());
 107         Assert.assertEquals("Wrong ip address (second number)", 2, out.readUnsignedByte());
 108         Assert.assertEquals("Wrong ip address (third number)", 3, out.readUnsignedByte());
 109         Assert.assertEquals("Wrong ip address (fourth number)", 4, out.readUnsignedByte());
 110     }
 111
 112     /**
 113      * Test for correct serialization of Ipv6Address match entry
 114      */
 115     @Test
 116     public void testIpv6Various() {
 117         MatchBuilder builder = new MatchBuilder();
 118         builder.setType(OxmMatchType.class);
 119         List<MatchEntries> entries = new ArrayList<>();
 120         // ipv6 match entry with correct Ipv6 address
 121         MatchEntriesBuilder entriesBuilder = new MatchEntriesBuilder();
 122         entriesBuilder.setOxmClass(OpenflowBasicClass.class);
 123         entriesBuilder.setOxmMatchField(Ipv6Src.class);
 124         entriesBuilder.setHasMask(false);
 125         Ipv6AddressMatchEntryBuilder addressBuilder = new Ipv6AddressMatchEntryBuilder();
 126         addressBuilder.setIpv6Address(new Ipv6Address("1:2:3:4:5:6:7:8"));
 127         entriesBuilder.addAugmentation(Ipv6AddressMatchEntry.class, addressBuilder.build());
 128         entries.add(entriesBuilder.build());
 129         // ipv6 match entry with abbreviated Ipv6 address
 130         entriesBuilder = new MatchEntriesBuilder();
 131         entriesBuilder.setOxmClass(OpenflowBasicClass.class);
 132         entriesBuilder.setOxmMatchField(Ipv6NdTarget.class);
 133         entriesBuilder.setHasMask(false);
 134         addressBuilder = new Ipv6AddressMatchEntryBuilder();
 135         addressBuilder.setIpv6Address(new Ipv6Address("1:2::6:7:8"));
 136         entriesBuilder.addAugmentation(Ipv6AddressMatchEntry.class, addressBuilder.build());
 137         entries.add(entriesBuilder.build());
 138         // ipv6 match entry with abbreviated Ipv6 address
 139         entriesBuilder = new MatchEntriesBuilder();
 140         entriesBuilder.setOxmClass(OpenflowBasicClass.class);
 141         entriesBuilder.setOxmMatchField(Ipv6Dst.class);
 142         entriesBuilder.setHasMask(false);
 143         addressBuilder = new Ipv6AddressMatchEntryBuilder();
 144         addressBuilder.setIpv6Address(new Ipv6Address("1::8"));
 145         entriesBuilder.addAugmentation(Ipv6AddressMatchEntry.class, addressBuilder.build());
 146         entries.add(entriesBuilder.build());
 147         // ipv6 match entry with abbreviated Ipv6 address
 148         entriesBuilder = new MatchEntriesBuilder();
 149         entriesBuilder.setOxmClass(OpenflowBasicClass.class);
 150         entriesBuilder.setOxmMatchField(Ipv6Dst.class);
 151         entriesBuilder.setHasMask(false);
 152         addressBuilder = new Ipv6AddressMatchEntryBuilder();
 153         addressBuilder.setIpv6Address(new Ipv6Address("::1"));
 154         entriesBuilder.addAugmentation(Ipv6AddressMatchEntry.class, addressBuilder.build());
 155         entries.add(entriesBuilder.build());
 156         // ipv6 match entry with abbreviated Ipv6 address
 157         entriesBuilder = new MatchEntriesBuilder();
 158         entriesBuilder.setOxmClass(OpenflowBasicClass.class);
 159         entriesBuilder.setOxmMatchField(Ipv6Dst.class);
 160         entriesBuilder.setHasMask(false);
 161         addressBuilder = new Ipv6AddressMatchEntryBuilder();
 162         addressBuilder.setIpv6Address(new Ipv6Address("::"));
 163         entriesBuilder.addAugmentation(Ipv6AddressMatchEntry.class, addressBuilder.build());
 164         entries.add(entriesBuilder.build());
 165         builder.setMatchEntries(entries);
 166         Match match = builder.build();
 167         ByteBuf out = UnpooledByteBufAllocator.DEFAULT.buffer();
 168         matchSerializer.serialize(match, out);
 169
 170         Assert.assertEquals("Wrong type", 1, out.readUnsignedShort());
 171         out.skipBytes(EncodeConstants.SIZE_OF_SHORT_IN_BYTES);
 172         Assert.assertEquals("Wrong class", 0x8000, out.readUnsignedShort());
 173         Assert.assertEquals("Wrong field and mask", 52, out.readUnsignedByte());
 174         Assert.assertEquals("Wrong entry length", 16, out.readUnsignedByte());
 175         Assert.assertEquals("Wrong ipv6 address", 1, out.readUnsignedShort());
 176         Assert.assertEquals("Wrong ipv6 address", 2, out.readUnsignedShort());
 177         Assert.assertEquals("Wrong ipv6 address", 3, out.readUnsignedShort());
 178         Assert.assertEquals("Wrong ipv6 address", 4, out.readUnsignedShort());
 179         Assert.assertEquals("Wrong ipv6 address", 5, out.readUnsignedShort());
 180         Assert.assertEquals("Wrong ipv6 address", 6, out.readUnsignedShort());
 181         Assert.assertEquals("Wrong ipv6 address", 7, out.readUnsignedShort());
 182         Assert.assertEquals("Wrong ipv6 address", 8, out.readUnsignedShort());
 183         Assert.assertEquals("Wrong class", 0x8000, out.readUnsignedShort());
 184         Assert.assertEquals("Wrong field and mask", 62, out.readUnsignedByte());
 185         Assert.assertEquals("Wrong entry length", 16, out.readUnsignedByte());
 186         Assert.assertEquals("Wrong ipv6 address", 1, out.readUnsignedShort());
 187         Assert.assertEquals("Wrong ipv6 address", 2, out.readUnsignedShort());
 188         Assert.assertEquals("Wrong ipv6 address", 0, out.readUnsignedShort());
 189         Assert.assertEquals("Wrong ipv6 address", 0, out.readUnsignedShort());
 190         Assert.assertEquals("Wrong ipv6 address", 0, out.readUnsignedShort());
 191         Assert.assertEquals("Wrong ipv6 address", 6, out.readUnsignedShort());
 192         Assert.assertEquals("Wrong ipv6 address", 7, out.readUnsignedShort());
 193         Assert.assertEquals("Wrong ipv6 address", 8, out.readUnsignedShort());
 194         Assert.assertEquals("Wrong class", 0x8000, out.readUnsignedShort());
 195         Assert.assertEquals("Wrong field and mask", 54, out.readUnsignedByte());
 196         Assert.assertEquals("Wrong entry length", 16, out.readUnsignedByte());
 197         Assert.assertEquals("Wrong ipv6 address", 1, out.readUnsignedShort());
 198         Assert.assertEquals("Wrong ipv6 address", 0, out.readUnsignedShort());
 199         Assert.assertEquals("Wrong ipv6 address", 0, out.readUnsignedShort());
 200         Assert.assertEquals("Wrong ipv6 address", 0, out.readUnsignedShort());
 201         Assert.assertEquals("Wrong ipv6 address", 0, out.readUnsignedShort());
 202         Assert.assertEquals("Wrong ipv6 address", 0, out.readUnsignedShort());
 203         Assert.assertEquals("Wrong ipv6 address", 0, out.readUnsignedShort());
 204         Assert.assertEquals("Wrong ipv6 address", 8, out.readUnsignedShort());
 205         Assert.assertEquals("Wrong class", 0x8000, out.readUnsignedShort());
 206         Assert.assertEquals("Wrong field and mask", 54, out.readUnsignedByte());
 207         Assert.assertEquals("Wrong entry length", 16, out.readUnsignedByte());
 208         Assert.assertEquals("Wrong ipv6 address", 0, out.readUnsignedShort());
 209         Assert.assertEquals("Wrong ipv6 address", 0, out.readUnsignedShort());
 210         Assert.assertEquals("Wrong ipv6 address", 0, out.readUnsignedShort());
 211         Assert.assertEquals("Wrong ipv6 address", 0, out.readUnsignedShort());
 212         Assert.assertEquals("Wrong ipv6 address", 0, out.readUnsignedShort());
 213         Assert.assertEquals("Wrong ipv6 address", 0, out.readUnsignedShort());
 214         Assert.assertEquals("Wrong ipv6 address", 0, out.readUnsignedShort());
 215         Assert.assertEquals("Wrong ipv6 address", 1, out.readUnsignedShort());
 216         Assert.assertEquals("Wrong class", 0x8000, out.readUnsignedShort());
 217         Assert.assertEquals("Wrong field and mask", 54, out.readUnsignedByte());
 218         Assert.assertEquals("Wrong entry length", 16, out.readUnsignedByte());
 219         Assert.assertEquals("Wrong ipv6 address", 0, out.readUnsignedShort());
 220         Assert.assertEquals("Wrong ipv6 address", 0, out.readUnsignedShort());
 221         Assert.assertEquals("Wrong ipv6 address", 0, out.readUnsignedShort());
 222         Assert.assertEquals("Wrong ipv6 address", 0, out.readUnsignedShort());
 223         Assert.assertEquals("Wrong ipv6 address", 0, out.readUnsignedShort());
 224         Assert.assertEquals("Wrong ipv6 address", 0, out.readUnsignedShort());
 225         Assert.assertEquals("Wrong ipv6 address", 0, out.readUnsignedShort());
 226         Assert.assertEquals("Wrong ipv6 address", 0, out.readUnsignedShort());
 227     }
 228
 229     /**
 230      * Test for correct serialization of incorrect Ipv6Address match entry
 231      */
 232     @Test(expected=IllegalStateException.class)
 233     public void testIpv6Incorrect() {
 234         MatchBuilder builder = new MatchBuilder();
 235         builder.setType(OxmMatchType.class);
 236         List<MatchEntries> entries = new ArrayList<>();
 237         // ipv6 match entry with incorrect Ipv6 address
 238         MatchEntriesBuilder entriesBuilder = new MatchEntriesBuilder();
 239         entriesBuilder.setOxmClass(OpenflowBasicClass.class);
 240         entriesBuilder.setOxmMatchField(Ipv6Src.class);
 241         entriesBuilder.setHasMask(false);
 242         Ipv6AddressMatchEntryBuilder addressBuilder = new Ipv6AddressMatchEntryBuilder();
 243         addressBuilder.setIpv6Address(new Ipv6Address("1:2::::8"));
 244         entriesBuilder.addAugmentation(Ipv6AddressMatchEntry.class, addressBuilder.build());
 245         entries.add(entriesBuilder.build());
 246         builder.setMatchEntries(entries);
 247         Match match = builder.build();
 248         ByteBuf out = UnpooledByteBufAllocator.DEFAULT.buffer();
 249         matchSerializer.serialize(match, out);
 250     }
 251
 252     /**
 253      * Test for correct serialization of Ipv4Address match entry
 254      */
 255     @Test
 256     public void testIpv6Flabel() {
 257         Match match = buildIpv6FLabelMatch(0x0f9e8dL, false, null);
 258
 259         ByteBuf out = UnpooledByteBufAllocator.DEFAULT.buffer();
 260         matchSerializer.serialize(match, out);
 261
 262         Assert.assertEquals("Wrong type", 1, out.readUnsignedShort());
 263         out.skipBytes(EncodeConstants.SIZE_OF_SHORT_IN_BYTES);
 264         Assert.assertEquals("Wrong class", 0x8000, out.readUnsignedShort());
 265         Assert.assertEquals("Wrong field and mask", 28<<1, out.readUnsignedByte());
 266         out.skipBytes(EncodeConstants.SIZE_OF_BYTE_IN_BYTES);
 267         byte[] label = new byte[4];
 268         out.readBytes(label);
 269
 270         LOG.debug("label: "+ ByteBufUtils.bytesToHexString(label));
 271         Assert.assertArrayEquals("Wrong ipv6FLabel", new byte[]{0, 0x0f, (byte) 0x9e, (byte) 0x8d}, label);
 272     }
 273
 274     /**
 275      * Test for correct serialization of Ipv4Address match entry with mask
 276      */
 277     @Test
 278     public void testIpv6FlabelWithMask() {
 279         Match match = buildIpv6FLabelMatch(0x0f9e8dL, true, new byte[]{0, 0x0c, 0x7b, 0x6a});
 280
 281         ByteBuf out = UnpooledByteBufAllocator.DEFAULT.buffer();
 282         matchSerializer.serialize(match, out);
 283
 284         Assert.assertEquals("Wrong type", 1, out.readUnsignedShort());
 285         out.skipBytes(EncodeConstants.SIZE_OF_SHORT_IN_BYTES);
 286         Assert.assertEquals("Wrong class", 0x8000, out.readUnsignedShort());
 287         Assert.assertEquals("Wrong field and mask", 28<<1 | 1, out.readUnsignedByte());
 288         out.skipBytes(EncodeConstants.SIZE_OF_BYTE_IN_BYTES);
 289         byte[] labelAndMask = new byte[8];
 290         out.readBytes(labelAndMask);
 291
 292         LOG.debug("label: "+ByteBufUtils.bytesToHexString(labelAndMask));
 293         Assert.assertArrayEquals("Wrong ipv6FLabel", new byte[]{0, 0x0f, (byte) 0x9e, (byte) 0x8d, 0, 0x0c, 0x7b, 0x6a}, labelAndMask);
 294     }
 295
 296     /**
 297      * Test for correct serialization of Ipv4Address match entry with wrong mask
 298      */
 299     @Test
 300     public void testIpv6FlabelWithMaskBad() {
 301         Match match = buildIpv6FLabelMatch(0x0f9e8dL, true, new byte[]{0x0c, 0x7b, 0x6a});
 302
 303         ByteBuf out = UnpooledByteBufAllocator.DEFAULT.buffer();
 304
 305         try {
 306             matchSerializer.serialize(match, out);
 307             Assert.fail("incorrect length of mask ignored");
 308         } catch (IllegalArgumentException e) {
 309             //expected
 310         }
 311     }
 312
 313     /**
 314      * @param labelValue ipv6 flow label
 315      * @param hasMask
 316      * @param mask ipv6 flow label mask
 317      * @return
 318      */
 319     private static Match buildIpv6FLabelMatch(long labelValue, boolean hasMask, byte[] mask) {
 320         MatchBuilder builder = new MatchBuilder();
 321         builder.setType(OxmMatchType.class);
 322         List<MatchEntries> entries = new ArrayList<>();
 323         MatchEntriesBuilder entriesBuilder = new MatchEntriesBuilder();
 324         entriesBuilder.setOxmClass(OpenflowBasicClass.class);
 325         entriesBuilder.setOxmMatchField(Ipv6Flabel.class);
 326         entriesBuilder.setHasMask(hasMask);
 327         Ipv6FlabelMatchEntryBuilder ip6FLabelBuilder = new Ipv6FlabelMatchEntryBuilder();
 328         ip6FLabelBuilder.setIpv6Flabel(new Ipv6FlowLabel(labelValue));
 329         entriesBuilder.addAugmentation(Ipv6FlabelMatchEntry.class, ip6FLabelBuilder.build());
 330         MaskMatchEntryBuilder maskBuilder = new MaskMatchEntryBuilder();
 331         maskBuilder.setMask(mask);
 332         entriesBuilder.addAugmentation(MaskMatchEntry.class, maskBuilder.build());
 333         entries.add(entriesBuilder.build());
 334         builder.setMatchEntries(entries);
 335         Match match = builder.build();
 336         return match;
 337     }
 338
 339     /**
 340      * Test Standard match type
 341      */
 342     @Test
 343     public void testStandardMatchType() {
 344         MatchBuilder builder = new MatchBuilder();
 345         builder.setType(StandardMatchType.class);
 346         Match match = builder.build();
 347         ByteBuf out = UnpooledByteBufAllocator.DEFAULT.buffer();
 348
 349         matchSerializer.serialize(match, out);
 350
 351         Assert.assertEquals("Wrong match type", 0, out.readUnsignedShort());
 352         Assert.assertEquals("Wrong match length", 4, out.readUnsignedShort());
 353         Assert.assertEquals("Wrong padding", 0, out.readUnsignedInt());
 354         Assert.assertEquals("Unexpected data", 0, out.readableBytes());
 355     }
 356
 357     /**
 358      * Test serialize experimenter match entry - with no experimenter
 359      * match entry serializer registered
 360      */
 361     @Test(expected=IllegalStateException.class)
 362     public void testSerializeExperimenterMatchEntry() {
 363         List<MatchEntries> entries = new ArrayList<>();
 364         MatchEntriesBuilder builder = new MatchEntriesBuilder();
 365         builder.setOxmClass(ExperimenterClass.class);
 366         builder.setOxmMatchField(OxmMatchFieldClass.class);
 367         builder.setHasMask(true);
 368         ExperimenterIdMatchEntryBuilder expIdBuilder = new ExperimenterIdMatchEntryBuilder();
 369         expIdBuilder.setExperimenter(new ExperimenterId(42L));
 370         builder.addAugmentation(ExperimenterIdMatchEntry.class, expIdBuilder.build());
 371         entries.add(builder.build());
 372         ByteBuf out = UnpooledByteBufAllocator.DEFAULT.buffer();
 373
 374         ((OF13MatchSerializer) matchSerializer).serializeMatchEntries(entries, out);
 375     }
 376
 377     private class OxmMatchFieldClass extends MatchField {
 378         // only for testing purposes
 379     }
 380 }