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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.vtn.table.impl;
import static com.google.common.base.Preconditions.checkNotNull;
import static org.slf4j.LoggerFactory.getLogger;
import org.onlab.osgi.DefaultServiceDirectory;
import org.onlab.osgi.ServiceDirectory;
import org.onlab.packet.EthType.EtherType;
import org.onlab.packet.Ip4Address;
import org.onlab.packet.IpAddress;
import org.onlab.packet.MacAddress;
import org.onosproject.core.ApplicationId;
import org.onosproject.net.DeviceId;
import org.onosproject.net.PortNumber;
import org.onosproject.net.behaviour.ExtensionTreatmentResolver;
import org.onosproject.net.driver.DriverHandler;
import org.onosproject.net.flow.DefaultTrafficSelector;
import org.onosproject.net.flow.DefaultTrafficTreatment;
import org.onosproject.net.flow.TrafficSelector;
import org.onosproject.net.flow.TrafficTreatment;
import org.onosproject.net.flow.instructions.ExtensionTreatment;
import org.onosproject.net.flow.instructions.ExtensionTreatmentType;
import org.onosproject.net.flowobjective.DefaultForwardingObjective;
import org.onosproject.net.flowobjective.FlowObjectiveService;
import org.onosproject.net.flowobjective.ForwardingObjective;
import org.onosproject.net.flowobjective.ForwardingObjective.Flag;
import org.onosproject.net.flowobjective.Objective;
import org.onosproject.net.flowobjective.Objective.Operation;
import org.onosproject.vtn.table.ArpService;
import org.onosproject.vtnrsc.SegmentationId;
import org.slf4j.Logger;
/**
* ArpTable class providing the rules in ARP table.
*/
public class ArpServiceImpl implements ArpService {
private final Logger log = getLogger(getClass());
private static final int ARP_PRIORITY = 0xffff;
private static final short ARP_RESPONSE = 0x2;
private static final EtherType ARP_TYPE = EtherType.ARP;
private final FlowObjectiveService flowObjectiveService;
private final ApplicationId appId;
/**
* Construct a ArpServiceImpl object.
*
* @param appId the application id of vtn
*/
public ArpServiceImpl(ApplicationId appId) {
this.appId = checkNotNull(appId, "ApplicationId can not be null");
ServiceDirectory serviceDirectory = new DefaultServiceDirectory();
this.flowObjectiveService = serviceDirectory.get(FlowObjectiveService.class);
}
@Override
public void programArpRules(DriverHandler hander, DeviceId deviceId,
IpAddress dstIP, SegmentationId srcVni,
MacAddress dstMac, Operation type) {
TrafficSelector selector = DefaultTrafficSelector.builder()
.matchEthType(ARP_TYPE.ethType().toShort())
.matchArpTpa(Ip4Address.valueOf(dstIP.toString()))
.matchTunnelId(Long.parseLong(srcVni.segmentationId())).build();
ExtensionTreatmentResolver resolver = hander
.behaviour(ExtensionTreatmentResolver.class);
ExtensionTreatment ethSrcToDst = resolver
.getExtensionInstruction(ExtensionTreatmentType.ExtensionTreatmentTypes
.NICIRA_MOV_ETH_SRC_TO_DST.type());
ExtensionTreatment arpShaToTha = resolver
.getExtensionInstruction(ExtensionTreatmentType.ExtensionTreatmentTypes
.NICIRA_MOV_ARP_SHA_TO_THA.type());
ExtensionTreatment arpSpaToTpa = resolver
.getExtensionInstruction(ExtensionTreatmentType.ExtensionTreatmentTypes
.NICIRA_MOV_ARP_SPA_TO_TPA.type());
TrafficTreatment treatment = DefaultTrafficTreatment.builder()
.extension(ethSrcToDst, deviceId)
.setEthSrc(dstMac).setArpOp(ARP_RESPONSE)
.extension(arpShaToTha, deviceId)
.extension(arpSpaToTpa, deviceId)
.setArpSha(dstMac).setArpSpa(dstIP)
.setOutput(PortNumber.IN_PORT).build();
ForwardingObjective.Builder objective = DefaultForwardingObjective
.builder().withTreatment(treatment).withSelector(selector)
.fromApp(appId).withFlag(Flag.SPECIFIC)
.withPriority(ARP_PRIORITY);
if (type.equals(Objective.Operation.ADD)) {
log.debug("PrivateArpRules-->ADD");
flowObjectiveService.forward(deviceId, objective.add());
} else {
log.debug("PrivateArpRules-->REMOVE");
flowObjectiveService.forward(deviceId, objective.remove());
}
}
}
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