| /* |
| * Copyright 2015-present Open Networking Foundation |
| * |
| * 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 org.onlab.osgi.DefaultServiceDirectory; |
| import org.onlab.osgi.ServiceDirectory; |
| import org.onlab.packet.Ethernet; |
| import org.onlab.packet.IpAddress; |
| import org.onlab.packet.IpPrefix; |
| import org.onlab.packet.MacAddress; |
| import org.onosproject.core.ApplicationId; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.PortNumber; |
| 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.Instructions; |
| 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.SnatService; |
| import org.onosproject.vtnrsc.SegmentationId; |
| |
| /** |
| * Provides implementation of SnatService. |
| */ |
| public class SnatServiceImpl implements SnatService { |
| |
| private static final int SNAT_SAME_SEG_PRIORITY = 0xffff; |
| private static final int SNAT_SAME_SEG_CON_PRIORITY = 0xfff0; |
| private static final int SNAT_DIFF_SEG_PRIORITY = 0xffe0; |
| private static final int PREFIC_LENGTH = 32; |
| |
| private final FlowObjectiveService flowObjectiveService; |
| private final ApplicationId appId; |
| |
| /** |
| * Construct a SnatServiceImpl object. |
| * |
| * @param appId the application id of vtn |
| */ |
| public SnatServiceImpl(ApplicationId appId) { |
| this.appId = checkNotNull(appId, "ApplicationId can not be null"); |
| ServiceDirectory serviceDirectory = new DefaultServiceDirectory(); |
| this.flowObjectiveService = serviceDirectory.get(FlowObjectiveService.class); |
| } |
| |
| @Override |
| public void programSnatSameSegmentRules(DeviceId deviceId, SegmentationId matchVni, |
| IpAddress srcIP, IpAddress dstIP, MacAddress ethDst, |
| MacAddress ethSrc, IpAddress ipSrc, |
| SegmentationId actionVni, Objective.Operation type) { |
| TrafficSelector selector = DefaultTrafficSelector.builder() |
| .matchEthType(Ethernet.TYPE_IPV4) |
| .matchTunnelId(Long.parseLong(matchVni.segmentationId())) |
| .matchIPSrc(IpPrefix.valueOf(srcIP, PREFIC_LENGTH)) |
| .matchIPDst(IpPrefix.valueOf(dstIP, PREFIC_LENGTH)).build(); |
| |
| TrafficTreatment.Builder treatment = DefaultTrafficTreatment.builder(); |
| treatment.setEthDst(ethDst).setEthSrc(ethSrc).setIpSrc(ipSrc) |
| .setTunnelId(Long.parseLong(actionVni.segmentationId())); |
| ForwardingObjective.Builder objective = DefaultForwardingObjective |
| .builder().withTreatment(treatment.build()) |
| .withSelector(selector).fromApp(appId).withFlag(Flag.SPECIFIC) |
| .withPriority(SNAT_SAME_SEG_PRIORITY); |
| if (type.equals(Objective.Operation.ADD)) { |
| flowObjectiveService.forward(deviceId, objective.add()); |
| } else { |
| flowObjectiveService.forward(deviceId, objective.remove()); |
| } |
| } |
| |
| @Override |
| public void programSnatDiffSegmentRules(DeviceId deviceId, SegmentationId matchVni, |
| IpAddress srcIP, MacAddress ethDst, |
| MacAddress ethSrc, IpAddress ipSrc, |
| SegmentationId actionVni, Objective.Operation type) { |
| TrafficSelector selector = DefaultTrafficSelector.builder() |
| .matchEthType(Ethernet.TYPE_IPV4) |
| .matchTunnelId(Long.parseLong(matchVni.segmentationId())) |
| .matchIPSrc(IpPrefix.valueOf(srcIP, PREFIC_LENGTH)).build(); |
| |
| TrafficTreatment.Builder treatment = DefaultTrafficTreatment.builder(); |
| treatment.setEthDst(ethDst).setEthSrc(ethSrc).setIpSrc(ipSrc) |
| .setTunnelId(Long.parseLong(actionVni.segmentationId())); |
| ForwardingObjective.Builder objective = DefaultForwardingObjective |
| .builder().withTreatment(treatment.build()) |
| .withSelector(selector).fromApp(appId).withFlag(Flag.SPECIFIC) |
| .withPriority(SNAT_DIFF_SEG_PRIORITY); |
| if (type.equals(Objective.Operation.ADD)) { |
| flowObjectiveService.forward(deviceId, objective.add()); |
| } else { |
| flowObjectiveService.forward(deviceId, objective.remove()); |
| } |
| } |
| |
| @Override |
| public void programSnatSameSegmentUploadControllerRules(DeviceId deviceId, |
| SegmentationId matchVni, |
| IpAddress srcIP, |
| IpAddress dstIP, |
| IpPrefix prefix, |
| Operation type) { |
| |
| TrafficSelector selector = DefaultTrafficSelector.builder() |
| .matchEthType(Ethernet.TYPE_IPV4) |
| .matchTunnelId(Long.parseLong(matchVni.segmentationId())) |
| .matchIPSrc(IpPrefix.valueOf(srcIP, PREFIC_LENGTH)) |
| .matchIPDst(IpPrefix.valueOf(dstIP, prefix.prefixLength())) |
| .build(); |
| TrafficTreatment.Builder treatment = DefaultTrafficTreatment.builder(); |
| treatment.add(Instructions.createOutput(PortNumber.CONTROLLER)); |
| ForwardingObjective.Builder objective = DefaultForwardingObjective |
| .builder().withTreatment(treatment.build()) |
| .withSelector(selector).fromApp(appId).withFlag(Flag.SPECIFIC) |
| .withPriority(SNAT_SAME_SEG_CON_PRIORITY); |
| if (type.equals(Objective.Operation.ADD)) { |
| flowObjectiveService.forward(deviceId, objective.add()); |
| } else { |
| flowObjectiveService.forward(deviceId, objective.remove()); |
| } |
| } |
| |
| @Override |
| public void removeSnatRules(DeviceId deviceId, TrafficSelector selector, |
| TrafficTreatment treatment, int priority, |
| Objective.Operation type) { |
| ForwardingObjective.Builder objective = DefaultForwardingObjective |
| .builder().withTreatment(treatment).withSelector(selector) |
| .fromApp(appId).withFlag(Flag.SPECIFIC).withPriority(priority); |
| if (type.equals(Objective.Operation.ADD)) { |
| flowObjectiveService.forward(deviceId, objective.add()); |
| } else { |
| flowObjectiveService.forward(deviceId, objective.remove()); |
| } |
| } |
| } |