gerrit.opnfv Code Review - onosfw.git/blob

   1 /*
   2  * Copyright 2015 Open Networking Laboratory
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package org.onosproject.driver.extensions;
  18
  19 import org.onlab.packet.Ip4Address;
  20 import org.onosproject.net.behaviour.ExtensionResolver;
  21 import org.onosproject.net.driver.AbstractHandlerBehaviour;
  22 import org.onosproject.net.flow.instructions.ExtensionInstruction;
  23 import org.onosproject.net.flow.instructions.ExtensionType;
  24 import org.onosproject.openflow.controller.ExtensionInterpreter;
  25 import org.projectfloodlight.openflow.protocol.OFActionType;
  26 import org.projectfloodlight.openflow.protocol.OFFactory;
  27 import org.projectfloodlight.openflow.protocol.action.OFAction;
  28 import org.projectfloodlight.openflow.protocol.action.OFActionSetField;
  29 import org.projectfloodlight.openflow.protocol.oxm.OFOxm;
  30 import org.projectfloodlight.openflow.protocol.oxm.OFOxmTunnelIpv4Dst;
  31 import org.projectfloodlight.openflow.types.IPv4Address;
  32
  33 /**
  34  * Interpreter for Nicira OpenFlow extensions.
  35  */
  36 public class NiciraExtensionInterpreter extends AbstractHandlerBehaviour
  37         implements ExtensionInterpreter, ExtensionResolver {
  38
  39     @Override
  40     public boolean supported(ExtensionType extensionType) {
  41         if (extensionType.equals(ExtensionType.ExtensionTypes.NICIRA_SET_TUNNEL_DST.type())) {
  42             return true;
  43         }
  44         if (extensionType.equals(ExtensionType.ExtensionTypes.NICIRA_RESUBMIT.type())) {
  45             return true;
  46         }
  47         return false;
  48     }
  49
  50     @Override
  51     public OFAction mapInstruction(OFFactory factory, ExtensionInstruction extensionInstruction) {
  52         ExtensionType type = extensionInstruction.type();
  53         if (type.equals(ExtensionType.ExtensionTypes.NICIRA_SET_TUNNEL_DST.type())) {
  54             NiciraSetTunnelDst tunnelDst = (NiciraSetTunnelDst) extensionInstruction;
  55             return factory.actions().setField(factory.oxms().tunnelIpv4Dst(
  56                     IPv4Address.of(tunnelDst.tunnelDst().toInt())));
  57         }
  58         if (type.equals(ExtensionType.ExtensionTypes.NICIRA_RESUBMIT.type())) {
  59           // TODO this will be implemented later
  60         }
  61         return null;
  62     }
  63
  64     @Override
  65     public ExtensionInstruction mapAction(OFAction action) {
  66         if (action.getType().equals(OFActionType.SET_FIELD)) {
  67             OFActionSetField setFieldAction = (OFActionSetField) action;
  68             OFOxm<?> oxm = setFieldAction.getField();
  69             switch (oxm.getMatchField().id) {
  70             case TUNNEL_IPV4_DST:
  71                 OFOxmTunnelIpv4Dst tunnelIpv4Dst = (OFOxmTunnelIpv4Dst) oxm;
  72                 return new NiciraSetTunnelDst(Ip4Address.valueOf(tunnelIpv4Dst.getValue().getInt()));
  73             default:
  74                 throw new UnsupportedOperationException(
  75                         "Driver does not support extension type " + oxm.getMatchField().id);
  76             }
  77         }
  78         return null;
  79     }
  80
  81     @Override
  82     public ExtensionInstruction getExtensionInstruction(ExtensionType type) {
  83         if (type.equals(ExtensionType.ExtensionTypes.NICIRA_SET_TUNNEL_DST.type())) {
  84             return new NiciraSetTunnelDst();
  85         }
  86         if (type.equals(ExtensionType.ExtensionTypes.NICIRA_RESUBMIT.type())) {
  87             return new NiciraResubmit();
  88         }
  89         throw new UnsupportedOperationException(
  90                 "Driver does not support extension type " + type.toString());
  91     }
  92 }