openflow-protocol-impl/src/main/java/org/opendaylight/openflowjava/protocol/impl/util/MatchSerializer.java

   1 /* Copyright (C)2013 Pantheon Technologies, s.r.o. All rights reserved. */\r
   2 package org.opendaylight.openflowjava.protocol.impl.util;\r
   3 \r
   4 import io.netty.buffer.ByteBuf;\r
   5 \r
   6 import java.util.Arrays;\r
   7 import java.util.HashMap;\r
   8 import java.util.List;\r
   9 import java.util.Map;\r
  10 \r
  11 import org.opendaylight.openflowjava.protocol.impl.serialization.factories.EncodeConstants;\r
  12 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.BosMatchEntry;\r
  13 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.DscpMatchEntry;\r
  14 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.EcnMatchEntry;\r
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.EthTypeMatchEntry;\r
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.Icmpv4CodeMatchEntry;\r
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.Icmpv4TypeMatchEntry;\r
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.Icmpv6CodeMatchEntry;\r
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.Icmpv6TypeMatchEntry;\r
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.Ipv4AddressMatchEntry;\r
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.Ipv6AddressMatchEntry;\r
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.Ipv6FlabelMatchEntry;\r
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.IsidMatchEntry;\r
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.MacAddressMatchEntry;\r
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.MaskMatchEntry;\r
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.MetadataMatchEntry;\r
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.MplsLabelMatchEntry;\r
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.OpCodeMatchEntry;\r
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.PortMatchEntry;\r
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.PortNumberMatchEntry;\r
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.ProtocolNumberMatchEntry;\r
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.PseudoFieldMatchEntry;\r
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.PseudoFieldMatchEntry.PseudoField;\r
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.TcMatchEntry;\r
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.VlanPcpMatchEntry;\r
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.VlanVidMatchEntry;\r
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.StandardMatchType;\r
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.ArpOp;\r
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.ArpSha;\r
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.ArpSpa;\r
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.ArpTha;\r
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.ArpTpa;\r
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.Clazz;\r
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.EthDst;\r
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.EthSrc;\r
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.EthType;\r
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.ExperimenterClass;\r
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.Icmpv4Code;\r
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.Icmpv4Type;\r
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.Icmpv6Code;\r
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.Icmpv6Type;\r
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.InPhyPort;\r
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.InPort;\r
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.IpDscp;\r
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.IpEcn;\r
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.IpProto;\r
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.Ipv4Dst;\r
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.Ipv4Src;\r
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.Ipv6Dst;\r
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.Ipv6Exthdr;\r
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.Ipv6Flabel;\r
  62 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.Ipv6NdSll;\r
  63 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.Ipv6NdTarget;\r
  64 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.Ipv6NdTll;\r
  65 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.Ipv6Src;\r
  66 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.MatchField;\r
  67 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.Metadata;\r
  68 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.MplsBos;\r
  69 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.MplsLabel;\r
  70 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.MplsTc;\r
  71 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.Nxm0Class;\r
  72 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.Nxm1Class;\r
  73 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.OpenflowBasicClass;\r
  74 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.OxmMatchType;\r
  75 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.PbbIsid;\r
  76 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.SctpDst;\r
  77 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.SctpSrc;\r
  78 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.TcpDst;\r
  79 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.TcpSrc;\r
  80 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.TunnelId;\r
  81 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.UdpDst;\r
  82 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.UdpSrc;\r
  83 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.VlanPcp;\r
  84 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.VlanVid;\r
  85 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.oxm.fields.MatchEntries;\r
  86 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.match.grouping.Match;\r
  87 import org.slf4j.Logger;\r
  88 import org.slf4j.LoggerFactory;\r
  89 \r
  90 /**\r
  91  * Serializes ofp_match (OpenFlow v1.3) and its oxm_fields structures\r
  92  * @author michal.polkorab\r
  93  * @author timotej.kubas\r
  94  */\r
  95 public class MatchSerializer {\r
  96     \r
  97     private static final Logger LOGGER = LoggerFactory.getLogger(MatchSerializer.class);\r
  98 \r
  99     /**\r
 100      * Encodes match (OpenFlow v1.3)\r
 101      * @param match ofp_match object\r
 102      * @param out output ByteBuf\r
 103      */\r
 104     public static void encodeMatch(Match match, ByteBuf out) {\r
 105         if (match == null) {\r
 106             LOGGER.debug("Match is null");\r
 107             return;\r
 108         }\r
 109         encodeType(match, out);\r
 110         // Length of ofp_match (excluding padding)\r
 111         int length = computeMatchLength(match);\r
 112         out.writeShort(length);\r
 113         encodeMatchEntries(match.getMatchEntries(), out);\r
 114         int paddingRemainder = length % EncodeConstants.PADDING;\r
 115         if (paddingRemainder != 0) {\r
 116             ByteBufUtils.padBuffer(EncodeConstants.PADDING - paddingRemainder, out);\r
 117         }\r
 118     }\r
 119 \r
 120     private static void encodeType(Match match, ByteBuf out) {\r
 121         final byte STANDARD_MATCH_TYPE_CODE = 0;\r
 122         final byte OXM_MATCH_TYPE_CODE = 1;\r
 123         if (match.getType().equals(StandardMatchType.class)) {\r
 124             out.writeShort(STANDARD_MATCH_TYPE_CODE);\r
 125         } else if (match.getType().equals(OxmMatchType.class)) {\r
 126             out.writeShort(OXM_MATCH_TYPE_CODE);\r
 127         }\r
 128     }\r
 129 \r
 130     /**\r
 131      * Encodes MatchEntries\r
 132      * @param matchEntries list of match entries (oxm_fields)\r
 133      * @param out output ByteBuf\r
 134      */\r
 135     public static void encodeMatchEntries(List<MatchEntries> matchEntries, ByteBuf out) {\r
 136         if (matchEntries == null) {\r
 137             LOGGER.warn("Match entries are null");\r
 138             return;\r
 139         }\r
 140         for (MatchEntries entry : matchEntries) {\r
 141             encodeClass(entry.getOxmClass(), out);\r
 142             encodeRest(entry, out);\r
 143         }\r
 144     }\r
 145 \r
 146     private static void encodeClass(Class<? extends Clazz> clazz, ByteBuf out) {\r
 147         final int NXM0_CLASS_CODE = 0x0000;\r
 148         final int NXM1_CLASS_CODE = 0x0001;\r
 149         final int OPENFLOW_BASIC_CLASS_CODE = 0x8000;\r
 150         final int EXPERIMENTER_CLASS_CODE = 0xFFFF;\r
 151         if (Nxm0Class.class.equals(clazz)) {\r
 152             out.writeShort(NXM0_CLASS_CODE);\r
 153         } else if (Nxm1Class.class.equals(clazz)) {\r
 154             out.writeShort(NXM1_CLASS_CODE);\r
 155         } else if (OpenflowBasicClass.class.equals(clazz)) {\r
 156             out.writeShort(OPENFLOW_BASIC_CLASS_CODE);\r
 157         } else if (ExperimenterClass.class.equals(clazz)) {\r
 158             out.writeShort(EXPERIMENTER_CLASS_CODE);\r
 159         }\r
 160     }\r
 161     \r
 162     private static void encodeRest(MatchEntries entry, ByteBuf out) {\r
 163         int fieldValue = 0;\r
 164         Class<? extends MatchField> field = entry.getOxmMatchField();\r
 165         if (field.equals(InPort.class)) {\r
 166             fieldValue = 0;\r
 167             writeOxmFieldAndLength(out, fieldValue, Integer.SIZE / Byte.SIZE);\r
 168             out.writeInt(entry.getAugmentation(PortNumberMatchEntry.class).getPortNumber().getValue().intValue());\r
 169         } else if (field.equals(InPhyPort.class)) {\r
 170             fieldValue = 1;\r
 171             writeOxmFieldAndLength(out, fieldValue, Integer.SIZE / Byte.SIZE);\r
 172             out.writeInt(entry.getAugmentation(PortNumberMatchEntry.class).getPortNumber().getValue().intValue());\r
 173         } else if (field.equals(Metadata.class)) {\r
 174             fieldValue = 2;\r
 175             writeMetadataRelatedEntry(entry, out, fieldValue);\r
 176         } else if (field.equals(EthDst.class)) {\r
 177             fieldValue = 3;\r
 178             writeMacAddressRelatedEntry(entry, out, fieldValue);\r
 179         } else if (field.equals(EthSrc.class)) {\r
 180             fieldValue = 4;\r
 181             writeMacAddressRelatedEntry(entry, out, fieldValue);\r
 182         } else if (field.equals(EthType.class)) {\r
 183             fieldValue = 5;\r
 184             writeOxmFieldAndLength(out, fieldValue, Short.SIZE / Byte.SIZE);\r
 185             out.writeShort(entry.getAugmentation(EthTypeMatchEntry.class).getEthType().getValue().shortValue());\r
 186         } else if (field.equals(VlanVid.class)) {\r
 187             fieldValue = 6;\r
 188             fieldValue = fieldValue << 1;\r
 189             VlanVidMatchEntry vlanVid = entry.getAugmentation(VlanVidMatchEntry.class);\r
 190             int vlanVidValue = vlanVid.getVlanVid() << 1;\r
 191             if (vlanVid.isCfiBit()) {\r
 192                 vlanVidValue = vlanVidValue | 1;\r
 193             }\r
 194             if (entry.isHasMask()) {\r
 195                 fieldValue = fieldValue | 1;\r
 196                 out.writeByte(fieldValue);\r
 197                 byte[] mask = entry.getAugmentation(MaskMatchEntry.class).getMask();\r
 198                 out.writeByte(Short.SIZE / Byte.SIZE + mask.length);\r
 199                 out.writeShort(vlanVidValue);\r
 200                 out.writeBytes(mask);\r
 201             } else {\r
 202                 writeOxmFieldAndLength(out, fieldValue, Short.SIZE / Byte.SIZE);\r
 203                 out.writeShort(vlanVidValue);\r
 204             }\r
 205         } else if (field.equals(VlanPcp.class)) {\r
 206             fieldValue = 7;\r
 207             writeOxmFieldAndLength(out, fieldValue, Byte.SIZE / Byte.SIZE);\r
 208             out.writeByte(entry.getAugmentation(VlanPcpMatchEntry.class).getVlanPcp().byteValue());\r
 209         } else if (field.equals(IpDscp.class)) {\r
 210             fieldValue = 8;\r
 211             writeOxmFieldAndLength(out, fieldValue, Byte.SIZE / Byte.SIZE);\r
 212             out.writeByte(entry.getAugmentation(DscpMatchEntry.class).getDscp().getValue());\r
 213         } else if (field.equals(IpEcn.class)) {\r
 214             fieldValue = 9;\r
 215             writeOxmFieldAndLength(out, fieldValue, Byte.SIZE / Byte.SIZE);\r
 216             out.writeByte(entry.getAugmentation(EcnMatchEntry.class).getEcn());\r
 217         } else if (field.equals(IpProto.class)) {\r
 218             fieldValue = 10;\r
 219             writeOxmFieldAndLength(out, fieldValue, Byte.SIZE / Byte.SIZE);\r
 220             out.writeByte(entry.getAugmentation(ProtocolNumberMatchEntry.class).getProtocolNumber());\r
 221         } else if (field.equals(Ipv4Src.class)) {\r
 222             fieldValue = 11;\r
 223             writeIpv4AddressRelatedEntry(entry, out, fieldValue);\r
 224         } else if (field.equals(Ipv4Dst.class)) {\r
 225             fieldValue = 12;\r
 226             writeIpv4AddressRelatedEntry(entry, out, fieldValue);\r
 227         } else if (field.equals(TcpSrc.class)) {\r
 228             fieldValue = 13;\r
 229             writeOxmFieldAndLength(out, fieldValue, Short.SIZE / Byte.SIZE);\r
 230             out.writeShort(entry.getAugmentation(PortMatchEntry.class).getPort().getValue().intValue());\r
 231         } else if (field.equals(TcpDst.class)) {\r
 232             fieldValue = 14;\r
 233             writeOxmFieldAndLength(out, fieldValue, Short.SIZE / Byte.SIZE);\r
 234             out.writeShort(entry.getAugmentation(PortMatchEntry.class).getPort().getValue().intValue());\r
 235         } else if (field.equals(UdpSrc.class)) {\r
 236             fieldValue = 15;\r
 237             writeOxmFieldAndLength(out, fieldValue, Short.SIZE / Byte.SIZE);\r
 238             out.writeShort(entry.getAugmentation(PortMatchEntry.class).getPort().getValue().intValue());\r
 239         } else if (field.equals(UdpDst.class)) {\r
 240             fieldValue = 16;\r
 241             writeOxmFieldAndLength(out, fieldValue, Short.SIZE / Byte.SIZE);\r
 242             out.writeShort(entry.getAugmentation(PortMatchEntry.class).getPort().getValue().intValue());\r
 243         } else if (field.equals(SctpSrc.class)) {\r
 244             fieldValue = 17;\r
 245             writeOxmFieldAndLength(out, fieldValue, Short.SIZE / Byte.SIZE);\r
 246             out.writeShort(entry.getAugmentation(PortMatchEntry.class).getPort().getValue().intValue());\r
 247         } else if (field.equals(SctpDst.class)) {\r
 248             fieldValue = 18;\r
 249             writeOxmFieldAndLength(out, fieldValue, Short.SIZE / Byte.SIZE);\r
 250             out.writeShort(entry.getAugmentation(PortMatchEntry.class).getPort().getValue().intValue());\r
 251         } else if (field.equals(Icmpv4Type.class)) {\r
 252             fieldValue = 19;\r
 253             writeOxmFieldAndLength(out, fieldValue, Byte.SIZE / Byte.SIZE);\r
 254             out.writeByte(entry.getAugmentation(Icmpv4TypeMatchEntry.class).getIcmpv4Type());\r
 255         } else if (field.equals(Icmpv4Code.class)) {\r
 256             fieldValue = 20;\r
 257             writeOxmFieldAndLength(out, fieldValue, Byte.SIZE / Byte.SIZE);\r
 258             out.writeByte(entry.getAugmentation(Icmpv4CodeMatchEntry.class).getIcmpv4Code());\r
 259         } else if (field.equals(ArpOp.class)) {\r
 260             fieldValue = 21;\r
 261             writeOxmFieldAndLength(out, fieldValue, Short.SIZE / Byte.SIZE);\r
 262             out.writeShort(entry.getAugmentation(OpCodeMatchEntry.class).getOpCode());\r
 263         } else if (field.equals(ArpSpa.class)) {\r
 264             fieldValue = 22;\r
 265             writeIpv4AddressRelatedEntry(entry, out, fieldValue);\r
 266         } else if (field.equals(ArpTpa.class)) {\r
 267             fieldValue = 23;\r
 268             writeIpv4AddressRelatedEntry(entry, out, fieldValue);\r
 269         } else if (field.equals(ArpSha.class)) {\r
 270             fieldValue = 24;\r
 271             writeMacAddressRelatedEntry(entry, out, fieldValue);\r
 272         } else if (field.equals(ArpTha.class)) {\r
 273             fieldValue = 25;\r
 274             writeMacAddressRelatedEntry(entry, out, fieldValue);\r
 275         } else if (field.equals(Ipv6Src.class)) {\r
 276             fieldValue = 26;\r
 277             writeIpv6AddressRelatedEntry(entry, out, fieldValue);\r
 278         } else if (field.equals(Ipv6Dst.class)) {\r
 279             fieldValue = 27;\r
 280             writeIpv6AddressRelatedEntry(entry, out, fieldValue);\r
 281         } else if (field.equals(Ipv6Flabel.class)) {\r
 282             fieldValue = 28;\r
 283             fieldValue = fieldValue << 1;\r
 284             if (entry.isHasMask()) {\r
 285                 fieldValue = fieldValue | 1;\r
 286                 out.writeByte(fieldValue);\r
 287                 byte[] mask = entry.getAugmentation(MaskMatchEntry.class).getMask();\r
 288                 out.writeByte(Integer.SIZE / Byte.SIZE + mask.length); // 20 b + mask [OF 1.3.2 spec]\r
 289                 LOGGER.warn("Ipv6Flabel match entry: possible wrong length written (wrote 4 - maybe must be 3)");\r
 290                 out.writeInt(entry.getAugmentation(Ipv6FlabelMatchEntry.class).getIpv6Flabel().getValue().intValue());\r
 291                 out.writeBytes(entry.getAugmentation(MaskMatchEntry.class).getMask());\r
 292             } else {\r
 293                 out.writeByte(fieldValue);\r
 294                 out.writeByte(Integer.SIZE / Byte.SIZE); // 20 b [OF 1.3.2 spec]\r
 295                 LOGGER.warn("Ipv6Flabel match entry: possible wrong length written (wrote 4 - maybe must be 3)");\r
 296                 out.writeInt(entry.getAugmentation(Ipv6FlabelMatchEntry.class).getIpv6Flabel().getValue().intValue());\r
 297             }\r
 298         } else if (field.equals(Icmpv6Type.class)) {\r
 299             fieldValue = 29;\r
 300             writeOxmFieldAndLength(out, fieldValue, Byte.SIZE / Byte.SIZE);\r
 301             out.writeByte(entry.getAugmentation(Icmpv6TypeMatchEntry.class).getIcmpv6Type());\r
 302         } else if (field.equals(Icmpv6Code.class)) {\r
 303             fieldValue = 30;\r
 304             writeOxmFieldAndLength(out, fieldValue, Byte.SIZE / Byte.SIZE);\r
 305             out.writeByte(entry.getAugmentation(Icmpv6CodeMatchEntry.class).getIcmpv6Code());\r
 306         } else if (field.equals(Ipv6NdTarget.class)) {\r
 307             fieldValue = 31;\r
 308             writeIpv6AddressRelatedEntry(entry, out, fieldValue);\r
 309         } else if (field.equals(Ipv6NdSll.class)) {\r
 310             fieldValue = 32;\r
 311             writeMacAddressRelatedEntry(entry, out, fieldValue);\r
 312         } else if (field.equals(Ipv6NdTll.class)) {\r
 313             fieldValue = 33;\r
 314             writeMacAddressRelatedEntry(entry, out, fieldValue);\r
 315         } else if (field.equals(MplsLabel.class)) {\r
 316             fieldValue = 34;\r
 317             writeOxmFieldAndLength(out, fieldValue, Integer.SIZE / Byte.SIZE);\r
 318             LOGGER.warn("MplsLabel match entry: possible wrong length written (wrote 4 - maybe must be 3)");\r
 319             out.writeInt(entry.getAugmentation(MplsLabelMatchEntry.class).getMplsLabel().intValue());\r
 320         } else if (field.equals(MplsTc.class)) {\r
 321             fieldValue = 35;\r
 322             writeOxmFieldAndLength(out, fieldValue, Byte.SIZE / Byte.SIZE);\r
 323             out.writeByte(entry.getAugmentation(TcMatchEntry.class).getTc());\r
 324         } else if (field.equals(MplsBos.class)) {\r
 325             fieldValue = 36;\r
 326             writeOxmFieldAndLength(out, fieldValue, Byte.SIZE / Byte.SIZE);\r
 327             out.writeBoolean(entry.getAugmentation(BosMatchEntry.class).isBos().booleanValue());\r
 328         } else if (field.equals(PbbIsid.class)) {\r
 329             fieldValue = 37;\r
 330             fieldValue = fieldValue << 1;\r
 331             if (entry.isHasMask()) {\r
 332                 fieldValue = fieldValue | 1;\r
 333                 out.writeByte(fieldValue);\r
 334                 byte[] mask = entry.getAugmentation(MaskMatchEntry.class).getMask();\r
 335                 out.writeByte(Long.SIZE / Byte.SIZE + mask.length);\r
 336                 LOGGER.warn("PbbIsid match entry: possible wrong length written (wrote 4 - maybe must be 3)");\r
 337                 out.writeInt(entry.getAugmentation(IsidMatchEntry.class).getIsid().intValue());\r
 338                 out.writeBytes(mask);\r
 339             } else {\r
 340                 out.writeByte(fieldValue);\r
 341                 out.writeByte(Long.SIZE / Byte.SIZE);\r
 342                 LOGGER.warn("PbbIsid match entry: possible wrong length written (wrote 4 - maybe must be 3)");\r
 343                 out.writeInt(entry.getAugmentation(IsidMatchEntry.class).getIsid().intValue());\r
 344             }\r
 345         } else if (field.equals(TunnelId.class)) {\r
 346             fieldValue = 38;\r
 347             writeMetadataRelatedEntry(entry, out, fieldValue);\r
 348         } else if (field.equals(Ipv6Exthdr.class)) {\r
 349             fieldValue = 39;\r
 350             fieldValue = fieldValue << 1;\r
 351             PseudoField pseudoField = entry.getAugmentation(PseudoFieldMatchEntry.class).getPseudoField();\r
 352             Map<Integer, Boolean> map = new HashMap<>();\r
 353             map.put(0, pseudoField.isNonext());\r
 354             map.put(1, pseudoField.isEsp());\r
 355             map.put(2, pseudoField.isAuth());\r
 356             map.put(3, pseudoField.isDest());\r
 357             map.put(4, pseudoField.isFrag());\r
 358             map.put(5, pseudoField.isRouter());\r
 359             map.put(6, pseudoField.isHop());\r
 360             map.put(7, pseudoField.isUnrep());\r
 361             map.put(8, pseudoField.isUnseq());\r
 362             int bitmap = ByteBufUtils.fillBitMaskFromMap(map);\r
 363             if (entry.isHasMask()) {\r
 364                 fieldValue = fieldValue | 1;\r
 365                 out.writeByte(fieldValue);\r
 366                 byte[] mask = entry.getAugmentation(MaskMatchEntry.class).getMask();\r
 367                 out.writeByte(Short.SIZE / Byte.SIZE + mask.length);\r
 368                 out.writeShort(bitmap);\r
 369                 out.writeBytes(mask);\r
 370             } else {\r
 371                 out.writeByte(fieldValue);\r
 372                 out.writeByte(Short.SIZE / Byte.SIZE);\r
 373                 out.writeShort(bitmap);\r
 374             }\r
 375         }\r
 376     }\r
 377     \r
 378     private static void writeOxmFieldAndLength(ByteBuf out, int fieldValue, int length) {\r
 379         int fieldAndMask = fieldValue << 1;\r
 380         out.writeByte(fieldAndMask);\r
 381         out.writeByte(length);\r
 382     }\r
 383     \r
 384     private static void writeMetadataRelatedEntry(MatchEntries entry, ByteBuf out, int value) {\r
 385         int fieldValue = value << 1;\r
 386         if (entry.isHasMask()) {\r
 387             fieldValue = fieldValue | 1;\r
 388             out.writeByte(fieldValue);\r
 389             byte[] mask = entry.getAugmentation(MaskMatchEntry.class).getMask();\r
 390             out.writeByte(Long.SIZE / Byte.SIZE + mask.length);\r
 391             out.writeBytes(entry.getAugmentation(MetadataMatchEntry.class).getMetadata());\r
 392             out.writeBytes(mask);\r
 393         } else {\r
 394             out.writeByte(fieldValue);\r
 395             out.writeByte(Long.SIZE / Byte.SIZE);\r
 396             out.writeBytes(entry.getAugmentation(MetadataMatchEntry.class).getMetadata());\r
 397         }\r
 398     }\r
 399     \r
 400     private static void writeMacAddressRelatedEntry(MatchEntries entry, ByteBuf out, int value) {\r
 401         int fieldValue = value << 1;\r
 402         if (entry.isHasMask()) {\r
 403             fieldValue = fieldValue | 1;\r
 404             out.writeByte(fieldValue);\r
 405             byte[] mask = entry.getAugmentation(MaskMatchEntry.class).getMask();\r
 406             out.writeByte((Integer.SIZE + Short.SIZE) / Byte.SIZE + mask.length); // 48 b + mask [OF 1.3.2 spec]\r
 407             out.writeBytes(entry.getAugmentation(MacAddressMatchEntry.class).getMacAddress().getValue().getBytes());\r
 408             out.writeBytes(mask);\r
 409         } else {\r
 410             out.writeByte(fieldValue);\r
 411             out.writeByte((Integer.SIZE + Short.SIZE) / Byte.SIZE); // 48 b [OF 1.3.2 spec]\r
 412             out.writeBytes(entry.getAugmentation(MacAddressMatchEntry.class).getMacAddress().getValue().getBytes());\r
 413         }\r
 414     }\r
 415     \r
 416     private static void writeIpv4AddressRelatedEntry(MatchEntries entry, ByteBuf out, int value) {\r
 417         int fieldValue = value << 1;\r
 418         if (entry.isHasMask()) {\r
 419             fieldValue = fieldValue | 1;\r
 420             out.writeByte(fieldValue);\r
 421             byte[] mask = entry.getAugmentation(MaskMatchEntry.class).getMask();\r
 422             out.writeByte(Integer.SIZE / Byte.SIZE + mask.length);\r
 423             writeIpv4Address(entry, out);\r
 424             out.writeBytes(mask);\r
 425         } else {\r
 426             out.writeByte(fieldValue);\r
 427             out.writeByte(Integer.SIZE / Byte.SIZE);\r
 428             writeIpv4Address(entry, out);\r
 429         }\r
 430     }\r
 431     \r
 432     private static void writeIpv4Address(MatchEntries entry, ByteBuf out) {\r
 433         String[] addressGroups = entry.getAugmentation(Ipv4AddressMatchEntry.class).getIpv4Address().getValue().split(".");\r
 434         for (int i = 0; i < addressGroups.length; i++) {\r
 435             out.writeByte(Integer.parseInt(addressGroups[i]));\r
 436         }\r
 437     }\r
 438 \r
 439     private static void writeIpv6AddressRelatedEntry(MatchEntries entry, ByteBuf out, int value) {\r
 440         int fieldValue = value << 1;\r
 441         String[] addressGroups = entry.getAugmentation(Ipv6AddressMatchEntry.class).getIpv6Address().getValue().split(":");\r
 442         String[] address = parseIpv6Address(addressGroups);\r
 443         if (entry.isHasMask()) {\r
 444             fieldValue = fieldValue | 1;\r
 445             out.writeByte(fieldValue);\r
 446             byte[] mask = entry.getAugmentation(MaskMatchEntry.class).getMask();\r
 447             out.writeByte((8 * Short.SIZE) / Byte.SIZE + mask.length);\r
 448             for (int i = 0; i < address.length; i++) {\r
 449                 out.writeShort(Integer.parseInt(addressGroups[i], 16));\r
 450             }\r
 451             out.writeBytes(mask);\r
 452         } else {\r
 453             out.writeByte(fieldValue);\r
 454             out.writeByte((8 * Short.SIZE) / Byte.SIZE);\r
 455             for (int i = 0; i < addressGroups.length; i++) {\r
 456                 out.writeShort(Integer.parseInt(addressGroups[i], 16));\r
 457             }\r
 458         }\r
 459     }\r
 460 \r
 461     private static String[] parseIpv6Address(String[] addressGroups) {\r
 462         final byte GROUPS_IN_IPV6_ADDRESS = 8;\r
 463         int countEmpty = 0;\r
 464         for (int i = 0; i < addressGroups.length; i++) {\r
 465             if (addressGroups[i].equals("")){\r
 466                 countEmpty++;\r
 467             } \r
 468         }\r
 469         String[] ready = new String[GROUPS_IN_IPV6_ADDRESS];\r
 470         switch (countEmpty) {\r
 471         case 0:\r
 472             ready = addressGroups;\r
 473             break;\r
 474         case 1:\r
 475             int zerosToBePushed = GROUPS_IN_IPV6_ADDRESS - addressGroups.length + 1;\r
 476             int pushed = 0;\r
 477             for (int i = 0; i < addressGroups.length; i++) {\r
 478                 if (addressGroups[i].equals("")) {\r
 479                     for (int j = 0; j < zerosToBePushed; j++) {\r
 480                         ready[i+j] = "0";\r
 481                         pushed++;\r
 482                     }\r
 483                 } else {\r
 484                     ready[i + pushed] = addressGroups[i];\r
 485                 }\r
 486             }\r
 487             break;\r
 488         case 2:\r
 489             Arrays.fill(ready, "0");\r
 490             ready[ready.length - 1] = addressGroups[addressGroups.length - 1];\r
 491             break;\r
 492         case 3:\r
 493             Arrays.fill(ready, "0");\r
 494             break;\r
 495 \r
 496         default:\r
 497             break;\r
 498         }\r
 499         return ready;\r
 500     }\r
 501 \r
 502     /**\r
 503      * Computes length of match (in bytes)\r
 504      * @param match\r
 505      * @return length of ofp_match (excluding padding)\r
 506      */\r
 507     public static int computeMatchLength(Match match) {\r
 508         final byte MATCH_TYPE_AND_LENGTH_SIZE = 4;\r
 509         int length = 0;\r
 510         if (match != null) {\r
 511             length += MATCH_TYPE_AND_LENGTH_SIZE + computeMatchEntriesLength(match.getMatchEntries());\r
 512         }\r
 513         return length;\r
 514     }\r
 515 \r
 516     /**\r
 517      * Computes length of MatchEntries (in bytes)\r
 518      * @param matchEntries list of match entries (oxm_fields)\r
 519      * @return length of MatchEntries\r
 520      */\r
 521     public static int computeMatchEntriesLength(List<MatchEntries> matchEntries) {\r
 522         final byte MATCH_ENTRY_HEADER_LENGTH = 4;\r
 523         int length = 0;\r
 524         if (matchEntries != null) {\r
 525             for (MatchEntries entry : matchEntries) {\r
 526                 length += MATCH_ENTRY_HEADER_LENGTH;\r
 527                 Class<? extends MatchField> field = entry.getOxmMatchField();\r
 528                 if (field.equals(InPort.class)) {\r
 529                     length += Integer.SIZE / Byte.SIZE;\r
 530                 } else if (field.equals(InPhyPort.class)) {\r
 531                     length += Integer.SIZE / Byte.SIZE;\r
 532                 } else if (field.equals(Metadata.class)) {\r
 533                     length += computePossibleMaskEntryLength(entry, Long.SIZE / Byte.SIZE);\r
 534                 } else if (field.equals(EthDst.class)) {\r
 535                     length += computePossibleMaskEntryLength(entry, Long.SIZE / Byte.SIZE);\r
 536                 } else if (field.equals(EthSrc.class)) {\r
 537                     length += computePossibleMaskEntryLength(entry, Long.SIZE / Byte.SIZE);\r
 538                 } else if (field.equals(EthType.class)) {\r
 539                     length += Short.SIZE / Byte.SIZE;\r
 540                 } else if (field.equals(VlanVid.class)) {\r
 541                     length += computePossibleMaskEntryLength(entry, Short.SIZE / Byte.SIZE);\r
 542                 } else if (field.equals(VlanPcp.class)) {\r
 543                     length += Byte.SIZE / Byte.SIZE;\r
 544                 } else if (field.equals(IpDscp.class)) {\r
 545                     length += Byte.SIZE / Byte.SIZE;\r
 546                 } else if (field.equals(IpEcn.class)) {\r
 547                     length += Byte.SIZE / Byte.SIZE;\r
 548                 } else if (field.equals(IpProto.class)) {\r
 549                     length += Byte.SIZE / Byte.SIZE;\r
 550                 } else if (field.equals(Ipv4Src.class)) {\r
 551                     length += computePossibleMaskEntryLength(entry, Integer.SIZE / Byte.SIZE);\r
 552                 } else if (field.equals(Ipv4Dst.class)) {\r
 553                     length += computePossibleMaskEntryLength(entry, Integer.SIZE / Byte.SIZE);\r
 554                 } else if (field.equals(TcpSrc.class)) {\r
 555                     length += Short.SIZE / Byte.SIZE;\r
 556                 } else if (field.equals(TcpDst.class)) {\r
 557                     length += Short.SIZE / Byte.SIZE;\r
 558                 } else if (field.equals(UdpSrc.class)) {\r
 559                     length += Short.SIZE / Byte.SIZE;\r
 560                 } else if (field.equals(UdpDst.class)) {\r
 561                     length += Short.SIZE / Byte.SIZE;\r
 562                 } else if (field.equals(SctpSrc.class)) {\r
 563                     length += Short.SIZE / Byte.SIZE;\r
 564                 } else if (field.equals(SctpDst.class)) {\r
 565                     length += Short.SIZE / Byte.SIZE;\r
 566                 } else if (field.equals(Icmpv4Type.class)) {\r
 567                     length += Byte.SIZE / Byte.SIZE;\r
 568                 } else if (field.equals(Icmpv4Code.class)) {\r
 569                     length += Byte.SIZE / Byte.SIZE;\r
 570                 } else if (field.equals(ArpOp.class)) {\r
 571                     length += Short.SIZE / Byte.SIZE;\r
 572                 } else if (field.equals(ArpSpa.class)) {\r
 573                     length += computePossibleMaskEntryLength(entry, Integer.SIZE / Byte.SIZE);\r
 574                 } else if (field.equals(ArpTpa.class)) {\r
 575                     length += computePossibleMaskEntryLength(entry, Integer.SIZE / Byte.SIZE);\r
 576                 } else if (field.equals(ArpSha.class)) {\r
 577                     length += computePossibleMaskEntryLength(entry, Long.SIZE / Byte.SIZE);\r
 578                 } else if (field.equals(ArpTha.class)) {\r
 579                     length += computePossibleMaskEntryLength(entry, Long.SIZE / Byte.SIZE);\r
 580                 } else if (field.equals(Ipv6Src.class)) {\r
 581                     length += computePossibleMaskEntryLength(entry, 8 * (Short.SIZE / Byte.SIZE));\r
 582                 } else if (field.equals(Ipv6Dst.class)) {\r
 583                     length += computePossibleMaskEntryLength(entry, 8 * (Short.SIZE / Byte.SIZE));\r
 584                 } else if (field.equals(Ipv6Flabel.class)) {\r
 585                     length += computePossibleMaskEntryLength(entry, Integer.SIZE / Byte.SIZE);\r
 586                 } else if (field.equals(Icmpv6Type.class)) {\r
 587                     length += Byte.SIZE / Byte.SIZE;\r
 588                 } else if (field.equals(Icmpv6Code.class)) {\r
 589                     length += Byte.SIZE / Byte.SIZE;\r
 590                 } else if (field.equals(Ipv6NdTarget.class)) {\r
 591                     length += computePossibleMaskEntryLength(entry, 8 * (Short.SIZE / Byte.SIZE));\r
 592                 } else if (field.equals(Ipv6NdSll.class)) {\r
 593                     length += computePossibleMaskEntryLength(entry, Long.SIZE / Byte.SIZE);\r
 594                 } else if (field.equals(Ipv6NdTll.class)) {\r
 595                     length += computePossibleMaskEntryLength(entry, Long.SIZE / Byte.SIZE);\r
 596                 } else if (field.equals(MplsLabel.class)) {\r
 597                     length += Integer.SIZE / Byte.SIZE;\r
 598                 } else if (field.equals(MplsTc.class)) {\r
 599                     length += Byte.SIZE / Byte.SIZE;\r
 600                 } else if (field.equals(MplsBos.class)) {\r
 601                     length += Byte.SIZE / Byte.SIZE;\r
 602                 } else if (field.equals(PbbIsid.class)) {\r
 603                     length += computePossibleMaskEntryLength(entry, Integer.SIZE / Byte.SIZE);\r
 604                 } else if (field.equals(TunnelId.class)) {\r
 605                     length += computePossibleMaskEntryLength(entry, Long.SIZE / Byte.SIZE);\r
 606                 } else if (field.equals(Ipv6Exthdr.class)) {\r
 607                     length += computePossibleMaskEntryLength(entry, Short.SIZE / Byte.SIZE);\r
 608                 }\r
 609             }\r
 610         }\r
 611         return length;\r
 612     }\r
 613 \r
 614     private static int computePossibleMaskEntryLength(MatchEntries entry, int length) {\r
 615         int entryLength = length;\r
 616         if (entry.isHasMask()) {\r
 617             entryLength *= 2;\r
 618         }\r
 619         return entryLength;\r
 620     }\r
 621 \r
 622 }\r