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/*
* Copyright 2015 Open Networking Laboratory
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.onosproject.driver.extensions;
import org.onlab.packet.Ip4Address;
import org.onosproject.net.behaviour.ExtensionResolver;
import org.onosproject.net.driver.AbstractHandlerBehaviour;
import org.onosproject.net.flow.instructions.ExtensionInstruction;
import org.onosproject.net.flow.instructions.ExtensionType;
import org.onosproject.openflow.controller.ExtensionInterpreter;
import org.projectfloodlight.openflow.protocol.OFActionType;
import org.projectfloodlight.openflow.protocol.OFFactory;
import org.projectfloodlight.openflow.protocol.action.OFAction;
import org.projectfloodlight.openflow.protocol.action.OFActionSetField;
import org.projectfloodlight.openflow.protocol.oxm.OFOxm;
import org.projectfloodlight.openflow.protocol.oxm.OFOxmTunnelIpv4Dst;
import org.projectfloodlight.openflow.types.IPv4Address;
/**
* Interpreter for Nicira OpenFlow extensions.
*/
public class NiciraExtensionInterpreter extends AbstractHandlerBehaviour
implements ExtensionInterpreter, ExtensionResolver {
@Override
public boolean supported(ExtensionType extensionType) {
if (extensionType.equals(ExtensionType.ExtensionTypes.NICIRA_SET_TUNNEL_DST.type())) {
return true;
}
if (extensionType.equals(ExtensionType.ExtensionTypes.NICIRA_RESUBMIT.type())) {
return true;
}
return false;
}
@Override
public OFAction mapInstruction(OFFactory factory, ExtensionInstruction extensionInstruction) {
ExtensionType type = extensionInstruction.type();
if (type.equals(ExtensionType.ExtensionTypes.NICIRA_SET_TUNNEL_DST.type())) {
NiciraSetTunnelDst tunnelDst = (NiciraSetTunnelDst) extensionInstruction;
return factory.actions().setField(factory.oxms().tunnelIpv4Dst(
IPv4Address.of(tunnelDst.tunnelDst().toInt())));
}
if (type.equals(ExtensionType.ExtensionTypes.NICIRA_RESUBMIT.type())) {
// TODO this will be implemented later
}
return null;
}
@Override
public ExtensionInstruction mapAction(OFAction action) {
if (action.getType().equals(OFActionType.SET_FIELD)) {
OFActionSetField setFieldAction = (OFActionSetField) action;
OFOxm<?> oxm = setFieldAction.getField();
switch (oxm.getMatchField().id) {
case TUNNEL_IPV4_DST:
OFOxmTunnelIpv4Dst tunnelIpv4Dst = (OFOxmTunnelIpv4Dst) oxm;
return new NiciraSetTunnelDst(Ip4Address.valueOf(tunnelIpv4Dst.getValue().getInt()));
default:
throw new UnsupportedOperationException(
"Driver does not support extension type " + oxm.getMatchField().id);
}
}
return null;
}
@Override
public ExtensionInstruction getExtensionInstruction(ExtensionType type) {
if (type.equals(ExtensionType.ExtensionTypes.NICIRA_SET_TUNNEL_DST.type())) {
return new NiciraSetTunnelDst();
}
if (type.equals(ExtensionType.ExtensionTypes.NICIRA_RESUBMIT.type())) {
return new NiciraResubmit();
}
throw new UnsupportedOperationException(
"Driver does not support extension type " + type.toString());
}
}
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