of-extension/nx-ofjava/src/main/java/org/opendaylight/ovs/nx/ofjava/codec/action/ResubmitCodec.java

   1 /*
   2  * Copyright (C) 2014 Red Hat, Inc.
   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  * Authors : Madhu Venugopal
   9  */
  10
  11 package org.opendaylight.ovs.nx.ofjava.codec.action;
  12
  13 import io.netty.buffer.ByteBuf;
  14
  15 import org.opendaylight.openflowjava.nx.api.NiciraActionDeserializerKey;
  16 import org.opendaylight.openflowjava.nx.api.NiciraActionSerializerKey;
  17 import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.ExperimenterIdAction;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.actions.grouping.Action;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.actions.grouping.ActionBuilder;
  21 import org.opendaylight.openflowjava.nx.codec.action.AbstractActionCodec;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.ovs.nx.action.rev140421.NxmNxResubmit;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.ovs.nx.action.rev140421.OfjAugNxAction;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.ovs.nx.action.rev140421.OfjAugNxActionBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.ovs.nx.action.rev140421.ofj.nx.action.resubmit.grouping.ActionResubmit;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.ovs.nx.action.rev140421.ofj.nx.action.resubmit.grouping.ActionResubmitBuilder;
  27
  28 /**
  29  * Codec for the NX_RESUBMIT and NX_RESUBMIT_TABLE
  30  */
  31 public class ResubmitCodec extends AbstractActionCodec {
  32     public static final int LENGTH = 16;
  33     public static final byte NXAST_RESUBMIT_SUBTYPE = 1;
  34     public static final byte NXAST_RESUBMIT_TABLE_SUBTYPE = 14;
  35     public static final NiciraActionSerializerKey SERIALIZER_KEY =
  36             new NiciraActionSerializerKey(EncodeConstants.OF13_VERSION_ID, NxmNxResubmit.class);
  37     public static final NiciraActionDeserializerKey RESUBMIT_DESERIALIZER_KEY =
  38             new NiciraActionDeserializerKey(EncodeConstants.OF13_VERSION_ID, NXAST_RESUBMIT_SUBTYPE);
  39     public static final NiciraActionDeserializerKey RESUBMIT_TABLE_DESERIALIZER_KEY =
  40             new NiciraActionDeserializerKey(EncodeConstants.OF13_VERSION_ID, NXAST_RESUBMIT_TABLE_SUBTYPE);
  41
  42     private static final byte OFP_TABLE_ALL = (byte)255;
  43     private static final short OFP_IN_PORT = (short)0xfff8;
  44     private static final int padding = 3; // nx_action_resubmit : uint8_t pad[3];
  45
  46     public byte getSubType(ActionResubmit action) {
  47         if ((action.getTable() == null) || (action.getTable().byteValue() == OFP_TABLE_ALL)) return NXAST_RESUBMIT_SUBTYPE;
  48         return NXAST_RESUBMIT_TABLE_SUBTYPE;
  49     }
  50
  51     @Override
  52     public void serialize(Action input, ByteBuf outBuffer) {
  53         byte table = OFP_TABLE_ALL;
  54         short inPort = OFP_IN_PORT;
  55
  56         ActionResubmit action = input.getAugmentation(OfjAugNxAction.class).getActionResubmit();
  57         serializeHeader(LENGTH, getSubType(action), outBuffer);
  58
  59         if (action.getInPort() != null) inPort = action.getInPort().shortValue();
  60         if (action.getTable() != null) table = action.getTable().byteValue();
  61         outBuffer.writeShort(inPort);
  62         outBuffer.writeByte(table);
  63         outBuffer.writeZero(padding);
  64     }
  65
  66     @Override
  67     public Action deserialize(ByteBuf message) {
  68         ActionBuilder actionBuilder = deserializeHeader(message);
  69         ActionResubmitBuilder builder = new ActionResubmitBuilder();
  70         builder.setInPort(message.readUnsignedShort());
  71         builder.setTable(message.readUnsignedByte());
  72         message.skipBytes(padding);
  73         OfjAugNxActionBuilder augNxActionBuilder = new OfjAugNxActionBuilder();
  74         augNxActionBuilder.setActionResubmit(builder.build());
  75         actionBuilder.addAugmentation(ExperimenterIdAction.class,
  76                                       createExperimenterIdAction(NxmNxResubmit.class));
  77         actionBuilder.addAugmentation(OfjAugNxAction.class, augNxActionBuilder.build());
  78         return actionBuilder.build();
  79     }
  80
  81 }