openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/protocol/deserialization/match/VlanVidEntryDeserializer.java

   1 /*
   2  * Copyright (c) 2016 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.openflowplugin.impl.protocol.deserialization.match;
  10
  11 import io.netty.buffer.ByteBuf;
  12 import java.util.Objects;
  13 import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
  14 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.flow.MatchBuilder;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.l2.types.rev130827.VlanId;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.VlanMatchBuilder;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.vlan.match.fields.VlanIdBuilder;
  18
  19 public class VlanVidEntryDeserializer extends AbstractMatchEntryDeserializer {
  20
  21     @Override
  22     public void deserializeEntry(ByteBuf message, MatchBuilder builder) {
  23         final boolean hasMask = processHeader(message);
  24         final VlanIdBuilder vlanIdBuilder = new VlanIdBuilder();
  25         final int vlanVidValue = message.readUnsignedShort();
  26
  27         if (hasMask) {
  28             message.skipBytes(EncodeConstants.SIZE_OF_SHORT_IN_BYTES); // Skip mask
  29             vlanIdBuilder
  30                     .setVlanId(new VlanId(0))
  31                     .setVlanIdPresent(true);
  32         } else {
  33             final boolean vidPresent = (vlanVidValue & (1 << 12)) != 0;
  34
  35             vlanIdBuilder
  36                     .setVlanId(new VlanId((vidPresent ? vlanVidValue & ((1 << 12) - 1) : vlanVidValue)))
  37                     .setVlanIdPresent(vidPresent);
  38         }
  39
  40         if (Objects.isNull(builder.getVlanMatch())) {
  41             builder.setVlanMatch(new VlanMatchBuilder()
  42                     .setVlanId(vlanIdBuilder.build())
  43                     .build());
  44         } else if (Objects.nonNull(builder.getVlanMatch().getVlanId())) {
  45             builder.setVlanMatch(new VlanMatchBuilder(builder.getVlanMatch())
  46                     .setVlanId(vlanIdBuilder.build())
  47                     .build());
  48         } else {
  49             throwErrorOnMalformed(builder, "vlanMatch");
  50         }
  51     }
  52
  53 }