| /* |
| * Copyright 2016-present 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.pipeline; |
| |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| import java.util.ArrayDeque; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.Deque; |
| import java.util.List; |
| import java.util.Objects; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.ImmutableSet; |
| import org.onlab.osgi.ServiceDirectory; |
| import org.onlab.packet.Ethernet; |
| import org.onlab.packet.IpPrefix; |
| import org.onlab.packet.MacAddress; |
| import org.onlab.packet.VlanId; |
| import org.onlab.util.KryoNamespace; |
| import org.onosproject.core.ApplicationId; |
| import org.onosproject.core.CoreService; |
| import org.onosproject.driver.extensions.OfdpaMatchVlanVid; |
| import org.onosproject.driver.extensions.OfdpaSetVlanVid; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.Port; |
| import org.onosproject.net.PortNumber; |
| import org.onosproject.net.behaviour.NextGroup; |
| import org.onosproject.net.behaviour.Pipeliner; |
| import org.onosproject.net.behaviour.PipelinerContext; |
| import org.onosproject.net.device.DeviceService; |
| import org.onosproject.net.driver.AbstractHandlerBehaviour; |
| import org.onosproject.net.flow.DefaultFlowRule; |
| import org.onosproject.net.flow.DefaultTrafficSelector; |
| import org.onosproject.net.flow.DefaultTrafficTreatment; |
| import org.onosproject.net.flow.FlowRule; |
| import org.onosproject.net.flow.FlowRuleOperations; |
| import org.onosproject.net.flow.FlowRuleOperationsContext; |
| import org.onosproject.net.flow.FlowRuleService; |
| import org.onosproject.net.flow.TrafficSelector; |
| import org.onosproject.net.flow.TrafficTreatment; |
| import org.onosproject.net.flow.criteria.Criteria; |
| import org.onosproject.net.flow.criteria.Criterion; |
| import org.onosproject.net.flow.criteria.EthCriterion; |
| import org.onosproject.net.flow.criteria.EthTypeCriterion; |
| import org.onosproject.net.flow.criteria.ExtensionCriterion; |
| import org.onosproject.net.flow.criteria.IPCriterion; |
| import org.onosproject.net.flow.criteria.MplsBosCriterion; |
| import org.onosproject.net.flow.criteria.MplsCriterion; |
| import org.onosproject.net.flow.criteria.PortCriterion; |
| import org.onosproject.net.flow.criteria.VlanIdCriterion; |
| import org.onosproject.net.flow.instructions.Instruction; |
| import org.onosproject.net.flow.instructions.Instructions.OutputInstruction; |
| import org.onosproject.net.flow.instructions.L2ModificationInstruction; |
| import org.onosproject.net.flow.instructions.L2ModificationInstruction.L2SubType; |
| import org.onosproject.net.flow.instructions.L2ModificationInstruction.ModVlanIdInstruction; |
| import org.onosproject.net.flow.instructions.L3ModificationInstruction; |
| import org.onosproject.net.flow.instructions.L3ModificationInstruction.L3SubType; |
| import org.onosproject.net.flowobjective.FilteringObjective; |
| import org.onosproject.net.flowobjective.FlowObjectiveStore; |
| import org.onosproject.net.flowobjective.ForwardingObjective; |
| import org.onosproject.net.flowobjective.NextObjective; |
| import org.onosproject.net.flowobjective.Objective; |
| import org.onosproject.net.flowobjective.ObjectiveError; |
| import org.onosproject.net.group.DefaultGroupKey; |
| import org.onosproject.net.group.Group; |
| import org.onosproject.net.group.GroupKey; |
| import org.onosproject.net.group.GroupService; |
| import org.onosproject.store.serializers.KryoNamespaces; |
| import org.slf4j.Logger; |
| |
| /** |
| * Driver for Broadcom's OF-DPA v2.0 TTP. |
| * |
| */ |
| public class Ofdpa2Pipeline extends AbstractHandlerBehaviour implements Pipeliner { |
| protected static final int PORT_TABLE = 0; |
| protected static final int VLAN_TABLE = 10; |
| protected static final int TMAC_TABLE = 20; |
| protected static final int UNICAST_ROUTING_TABLE = 30; |
| protected static final int MULTICAST_ROUTING_TABLE = 40; |
| protected static final int MPLS_TABLE_0 = 23; |
| protected static final int MPLS_TABLE_1 = 24; |
| protected static final int BRIDGING_TABLE = 50; |
| protected static final int ACL_TABLE = 60; |
| protected static final int MAC_LEARNING_TABLE = 254; |
| protected static final long OFPP_MAX = 0xffffff00L; |
| |
| protected static final int HIGHEST_PRIORITY = 0xffff; |
| protected static final int DEFAULT_PRIORITY = 0x8000; |
| protected static final int LOWEST_PRIORITY = 0x0; |
| |
| private final Logger log = getLogger(getClass()); |
| protected ServiceDirectory serviceDirectory; |
| protected FlowRuleService flowRuleService; |
| protected CoreService coreService; |
| protected GroupService groupService; |
| protected FlowObjectiveStore flowObjectiveStore; |
| protected DeviceId deviceId; |
| protected ApplicationId driverId; |
| protected DeviceService deviceService; |
| protected static KryoNamespace appKryo = new KryoNamespace.Builder() |
| .register(KryoNamespaces.API) |
| .register(GroupKey.class) |
| .register(DefaultGroupKey.class) |
| .register(Ofdpa2GroupHandler.OfdpaNextGroup.class) |
| .register(ArrayDeque.class) |
| .build("Ofdpa2Pipeline"); |
| |
| protected Ofdpa2GroupHandler groupHandler; |
| |
| protected Set<IPCriterion> sentIpFilters = Collections.newSetFromMap( |
| new ConcurrentHashMap<>()); |
| |
| @Override |
| public void init(DeviceId deviceId, PipelinerContext context) { |
| this.deviceId = deviceId; |
| |
| // Initialize OFDPA group handler |
| groupHandler = new Ofdpa2GroupHandler(); |
| groupHandler.init(deviceId, context); |
| |
| serviceDirectory = context.directory(); |
| coreService = serviceDirectory.get(CoreService.class); |
| flowRuleService = serviceDirectory.get(FlowRuleService.class); |
| groupService = serviceDirectory.get(GroupService.class); |
| flowObjectiveStore = context.store(); |
| deviceService = serviceDirectory.get(DeviceService.class); |
| |
| driverId = coreService.registerApplication( |
| "org.onosproject.driver.Ofdpa2Pipeline"); |
| |
| initializePipeline(); |
| } |
| |
| protected void initializePipeline() { |
| // OF-DPA does not require initializing the pipeline as it puts default |
| // rules automatically in the hardware. However emulation of OFDPA in |
| // software switches does require table-miss-entries. |
| } |
| |
| ////////////////////////////////////// |
| // Flow Objectives |
| ////////////////////////////////////// |
| |
| @Override |
| public void filter(FilteringObjective filteringObjective) { |
| if (filteringObjective.type() == FilteringObjective.Type.PERMIT) { |
| processFilter(filteringObjective, |
| filteringObjective.op() == Objective.Operation.ADD, |
| filteringObjective.appId()); |
| } else { |
| // Note that packets that don't match the PERMIT filter are |
| // automatically denied. The DENY filter is used to deny packets |
| // that are otherwise permitted by the PERMIT filter. |
| // Use ACL table flow rules here for DENY filtering objectives |
| log.debug("filter objective other than PERMIT currently not supported"); |
| fail(filteringObjective, ObjectiveError.UNSUPPORTED); |
| } |
| } |
| |
| @Override |
| public void forward(ForwardingObjective fwd) { |
| Collection<FlowRule> rules; |
| FlowRuleOperations.Builder flowOpsBuilder = FlowRuleOperations.builder(); |
| |
| rules = processForward(fwd); |
| if (rules == null || rules.isEmpty()) { |
| // Assumes fail message has already been generated to the objective |
| // context. Returning here prevents spurious pass message to be |
| // generated by FlowRule service for empty flowOps. |
| return; |
| } |
| switch (fwd.op()) { |
| case ADD: |
| rules.stream() |
| .filter(Objects::nonNull) |
| .forEach(flowOpsBuilder::add); |
| break; |
| case REMOVE: |
| rules.stream() |
| .filter(Objects::nonNull) |
| .forEach(flowOpsBuilder::remove); |
| break; |
| default: |
| fail(fwd, ObjectiveError.UNKNOWN); |
| log.warn("Unknown forwarding type {}", fwd.op()); |
| } |
| |
| flowRuleService.apply(flowOpsBuilder.build(new FlowRuleOperationsContext() { |
| @Override |
| public void onSuccess(FlowRuleOperations ops) { |
| pass(fwd); |
| } |
| |
| @Override |
| public void onError(FlowRuleOperations ops) { |
| fail(fwd, ObjectiveError.FLOWINSTALLATIONFAILED); |
| } |
| })); |
| } |
| |
| @Override |
| public void next(NextObjective nextObjective) { |
| NextGroup nextGroup = flowObjectiveStore.getNextGroup(nextObjective.id()); |
| switch (nextObjective.op()) { |
| case ADD: |
| if (nextGroup != null) { |
| log.warn("Cannot add next {} that already exists in device {}", |
| nextObjective.id(), deviceId); |
| return; |
| } |
| log.debug("Processing NextObjective id{} in dev{} - add group", |
| nextObjective.id(), deviceId); |
| groupHandler.addGroup(nextObjective); |
| break; |
| case ADD_TO_EXISTING: |
| if (nextGroup != null) { |
| log.debug("Processing NextObjective id{} in dev{} - add bucket", |
| nextObjective.id(), deviceId); |
| groupHandler.addBucketToGroup(nextObjective, nextGroup); |
| } else { |
| // it is possible that group-chain has not been fully created yet |
| log.debug("Waiting to add bucket to group for next-id:{} in dev:{}", |
| nextObjective.id(), deviceId); |
| // by design only one pending bucket is allowed for the group |
| groupHandler.pendingBuckets.put(nextObjective.id(), nextObjective); |
| } |
| break; |
| case REMOVE: |
| if (nextGroup == null) { |
| log.warn("Cannot remove next {} that does not exist in device {}", |
| nextObjective.id(), deviceId); |
| return; |
| } |
| log.debug("Processing NextObjective id{} in dev{} - remove group", |
| nextObjective.id(), deviceId); |
| groupHandler.removeGroup(nextObjective, nextGroup); |
| break; |
| case REMOVE_FROM_EXISTING: |
| if (nextGroup == null) { |
| log.warn("Cannot remove from next {} that does not exist in device {}", |
| nextObjective.id(), deviceId); |
| return; |
| } |
| log.debug("Processing NextObjective id{} in dev{} - remove bucket", |
| nextObjective.id(), deviceId); |
| groupHandler.removeBucketFromGroup(nextObjective, nextGroup); |
| break; |
| default: |
| log.warn("Unsupported operation {}", nextObjective.op()); |
| } |
| } |
| |
| ////////////////////////////////////// |
| // Flow handling |
| ////////////////////////////////////// |
| |
| /** |
| * As per OFDPA 2.0 TTP, filtering of VLAN ids, MAC addresses (for routing) |
| * and IP addresses configured on switch ports happen in different tables. |
| * Note that IP filtering rules need to be added to the ACL table, as there |
| * is no mechanism to send to controller via IP table. |
| * |
| * @param filt the filtering objective |
| * @param install indicates whether to add or remove the objective |
| * @param applicationId the application that sent this objective |
| */ |
| protected void processFilter(FilteringObjective filt, |
| boolean install, ApplicationId applicationId) { |
| // This driver only processes filtering criteria defined with switch |
| // ports as the key |
| PortCriterion portCriterion = null; |
| EthCriterion ethCriterion = null; |
| VlanIdCriterion vidCriterion = null; |
| Collection<IPCriterion> ips = new ArrayList<IPCriterion>(); |
| if (!filt.key().equals(Criteria.dummy()) && |
| filt.key().type() == Criterion.Type.IN_PORT) { |
| portCriterion = (PortCriterion) filt.key(); |
| } else { |
| log.warn("No key defined in filtering objective from app: {}. Not" |
| + "processing filtering objective", applicationId); |
| fail(filt, ObjectiveError.BADPARAMS); |
| return; |
| } |
| log.debug("Received filtering objective for dev/port: {}/{}", deviceId, |
| portCriterion.port()); |
| // convert filtering conditions for switch-intfs into flowrules |
| FlowRuleOperations.Builder ops = FlowRuleOperations.builder(); |
| for (Criterion criterion : filt.conditions()) { |
| if (criterion.type() == Criterion.Type.ETH_DST || |
| criterion.type() == Criterion.Type.ETH_DST_MASKED) { |
| ethCriterion = (EthCriterion) criterion; |
| } else if (criterion.type() == Criterion.Type.VLAN_VID) { |
| vidCriterion = (VlanIdCriterion) criterion; |
| } else if (criterion.type() == Criterion.Type.IPV4_DST) { |
| ips.add((IPCriterion) criterion); |
| } else { |
| log.error("Unsupported filter {}", criterion); |
| fail(filt, ObjectiveError.UNSUPPORTED); |
| return; |
| } |
| } |
| |
| VlanId assignedVlan = null; |
| if (vidCriterion != null) { |
| // Use the VLAN in metadata whenever a metadata is provided |
| if (filt.meta() != null) { |
| assignedVlan = readVlanFromTreatment(filt.meta()); |
| // Use the VLAN in criterion if metadata is not present and the traffic is tagged |
| } else if (!vidCriterion.vlanId().equals(VlanId.NONE)) { |
| assignedVlan = vidCriterion.vlanId(); |
| } |
| |
| if (assignedVlan == null) { |
| log.error("Driver fails to extract VLAN information. " |
| + "Not proccessing VLAN filters on device {}.", deviceId); |
| log.debug("VLAN ID in criterion={}, metadata={}", |
| readVlanFromTreatment(filt.meta()), vidCriterion.vlanId()); |
| fail(filt, ObjectiveError.BADPARAMS); |
| return; |
| } |
| } |
| |
| if (ethCriterion == null || ethCriterion.mac().equals(MacAddress.NONE)) { |
| // NOTE: it is possible that a filtering objective only has vidCriterion |
| log.debug("filtering objective missing dstMac, cannot program TMAC table"); |
| } else { |
| for (FlowRule tmacRule : processEthDstFilter(portCriterion, ethCriterion, |
| vidCriterion, assignedVlan, |
| applicationId)) { |
| log.debug("adding MAC filtering rules in TMAC table: {} for dev: {}", |
| tmacRule, deviceId); |
| ops = install ? ops.add(tmacRule) : ops.remove(tmacRule); |
| } |
| } |
| |
| if (vidCriterion == null) { |
| // NOTE: it is possible that a filtering objective only has ethCriterion |
| log.debug("filtering objective missing dstMac or VLAN, " |
| + "cannot program VLAN Table"); |
| } else { |
| /* |
| * NOTE: Separate vlan filtering rules and assignment rules |
| * into different stage in order to guarantee that filtering rules |
| * always go first, as required by ofdpa. |
| */ |
| List<FlowRule> allRules = processVlanIdFilter( |
| portCriterion, vidCriterion, assignedVlan, applicationId); |
| List<FlowRule> filteringRules = new ArrayList<>(); |
| List<FlowRule> assignmentRules = new ArrayList<>(); |
| |
| allRules.forEach(flowRule -> { |
| ExtensionCriterion extCriterion = |
| (ExtensionCriterion) flowRule.selector().getCriterion(Criterion.Type.EXTENSION); |
| VlanId vlanId = ((OfdpaMatchVlanVid) extCriterion.extensionSelector()).vlanId(); |
| if (!vlanId.equals(VlanId.NONE)) { |
| filteringRules.add(flowRule); |
| } else { |
| assignmentRules.add(flowRule); |
| } |
| }); |
| |
| for (FlowRule filteringRule : filteringRules) { |
| log.debug("adding VLAN filtering rule in VLAN table: {} for dev: {}", |
| filteringRule, deviceId); |
| ops = install ? ops.add(filteringRule) : ops.remove(filteringRule); |
| } |
| |
| ops.newStage(); |
| |
| for (FlowRule assignmentRule : assignmentRules) { |
| log.debug("adding VLAN assignment rule in VLAN table: {} for dev: {}", |
| assignmentRule, deviceId); |
| ops = install ? ops.add(assignmentRule) : ops.remove(assignmentRule); |
| } |
| } |
| |
| for (IPCriterion ipaddr : ips) { |
| // since we ignore port information for IP rules, and the same (gateway) IP |
| // can be configured on multiple ports, we make sure that we send |
| // only a single rule to the switch. |
| if (!sentIpFilters.contains(ipaddr)) { |
| sentIpFilters.add(ipaddr); |
| log.debug("adding IP filtering rules in ACL table {} for dev: {}", |
| ipaddr, deviceId); |
| TrafficSelector.Builder selector = DefaultTrafficSelector.builder(); |
| TrafficTreatment.Builder treatment = DefaultTrafficTreatment.builder(); |
| selector.matchEthType(Ethernet.TYPE_IPV4); |
| selector.matchIPDst(ipaddr.ip()); |
| treatment.setOutput(PortNumber.CONTROLLER); |
| FlowRule rule = DefaultFlowRule.builder() |
| .forDevice(deviceId) |
| .withSelector(selector.build()) |
| .withTreatment(treatment.build()) |
| .withPriority(HIGHEST_PRIORITY) |
| .fromApp(applicationId) |
| .makePermanent() |
| .forTable(ACL_TABLE).build(); |
| ops = install ? ops.add(rule) : ops.remove(rule); |
| } |
| } |
| |
| // apply filtering flow rules |
| flowRuleService.apply(ops.build(new FlowRuleOperationsContext() { |
| @Override |
| public void onSuccess(FlowRuleOperations ops) { |
| log.info("Applied {} filtering rules in device {}", |
| ops.stages().get(0).size(), deviceId); |
| pass(filt); |
| } |
| |
| @Override |
| public void onError(FlowRuleOperations ops) { |
| log.info("Failed to apply all filtering rules in dev {}", deviceId); |
| fail(filt, ObjectiveError.FLOWINSTALLATIONFAILED); |
| } |
| })); |
| |
| } |
| |
| /** |
| * Allows untagged packets into pipeline by assigning a vlan id. |
| * Vlan assignment is done by the application. |
| * Allows tagged packets into pipeline as per configured port-vlan info. |
| * |
| * @param portCriterion port on device for which this filter is programmed |
| * @param vidCriterion vlan assigned to port, or NONE for untagged |
| * @param assignedVlan assigned vlan-id for untagged packets |
| * @param applicationId for application programming this filter |
| * @return list of FlowRule for port-vlan filters |
| */ |
| protected List<FlowRule> processVlanIdFilter(PortCriterion portCriterion, |
| VlanIdCriterion vidCriterion, |
| VlanId assignedVlan, |
| ApplicationId applicationId) { |
| List<FlowRule> rules = new ArrayList<>(); |
| TrafficSelector.Builder selector = DefaultTrafficSelector.builder(); |
| TrafficTreatment.Builder treatment = DefaultTrafficTreatment.builder(); |
| TrafficSelector.Builder preSelector = null; |
| TrafficTreatment.Builder preTreatment = null; |
| |
| treatment.transition(TMAC_TABLE); |
| |
| if (vidCriterion.vlanId() == VlanId.NONE) { |
| // untagged packets are assigned vlans |
| OfdpaMatchVlanVid ofdpaMatchVlanVid = new OfdpaMatchVlanVid(VlanId.NONE); |
| selector.extension(ofdpaMatchVlanVid, deviceId); |
| OfdpaSetVlanVid ofdpaSetVlanVid = new OfdpaSetVlanVid(assignedVlan); |
| treatment.extension(ofdpaSetVlanVid, deviceId); |
| |
| preSelector = DefaultTrafficSelector.builder(); |
| OfdpaMatchVlanVid preOfdpaMatchVlanVid = new OfdpaMatchVlanVid(assignedVlan); |
| preSelector.extension(preOfdpaMatchVlanVid, deviceId); |
| preTreatment = DefaultTrafficTreatment.builder().transition(TMAC_TABLE); |
| |
| } else { |
| OfdpaMatchVlanVid ofdpaMatchVlanVid = new OfdpaMatchVlanVid(vidCriterion.vlanId()); |
| selector.extension(ofdpaMatchVlanVid, deviceId); |
| |
| if (!assignedVlan.equals(vidCriterion.vlanId())) { |
| OfdpaSetVlanVid ofdpaSetVlanVid = new OfdpaSetVlanVid(assignedVlan); |
| treatment.extension(ofdpaSetVlanVid, deviceId); |
| } |
| } |
| |
| // ofdpa cannot match on ALL portnumber, so we need to use separate |
| // rules for each port. |
| List<PortNumber> portnums = new ArrayList<>(); |
| if (portCriterion.port() == PortNumber.ALL) { |
| for (Port port : deviceService.getPorts(deviceId)) { |
| if (port.number().toLong() > 0 && port.number().toLong() < OFPP_MAX) { |
| portnums.add(port.number()); |
| } |
| } |
| } else { |
| portnums.add(portCriterion.port()); |
| } |
| |
| for (PortNumber pnum : portnums) { |
| // create rest of flowrule |
| selector.matchInPort(pnum); |
| FlowRule rule = DefaultFlowRule.builder() |
| .forDevice(deviceId) |
| .withSelector(selector.build()) |
| .withTreatment(treatment.build()) |
| .withPriority(DEFAULT_PRIORITY) |
| .fromApp(applicationId) |
| .makePermanent() |
| .forTable(VLAN_TABLE).build(); |
| |
| if (preSelector != null) { |
| preSelector.matchInPort(pnum); |
| FlowRule preRule = DefaultFlowRule.builder() |
| .forDevice(deviceId) |
| .withSelector(preSelector.build()) |
| .withTreatment(preTreatment.build()) |
| .withPriority(DEFAULT_PRIORITY) |
| .fromApp(applicationId) |
| .makePermanent() |
| .forTable(VLAN_TABLE).build(); |
| rules.add(preRule); |
| } |
| |
| rules.add(rule); |
| } |
| return rules; |
| } |
| |
| /** |
| * Allows routed packets with correct destination MAC to be directed |
| * to unicast-IP routing table or MPLS forwarding table. |
| * |
| * @param portCriterion port on device for which this filter is programmed |
| * @param ethCriterion dstMac of device for which is filter is programmed |
| * @param vidCriterion vlan assigned to port, or NONE for untagged |
| * @param assignedVlan assigned vlan-id for untagged packets |
| * @param applicationId for application programming this filter |
| * @return list of FlowRule for port-vlan filters |
| |
| */ |
| protected List<FlowRule> processEthDstFilter(PortCriterion portCriterion, |
| EthCriterion ethCriterion, |
| VlanIdCriterion vidCriterion, |
| VlanId assignedVlan, |
| ApplicationId applicationId) { |
| // Consider PortNumber.ANY as wildcard. Match ETH_DST only |
| if (portCriterion != null && portCriterion.port() == PortNumber.ANY) { |
| return processEthDstOnlyFilter(ethCriterion, applicationId); |
| } |
| |
| // Multicast MAC |
| if (ethCriterion.mask() != null) { |
| return processMcastEthDstFilter(ethCriterion, applicationId); |
| } |
| |
| //handling untagged packets via assigned VLAN |
| if (vidCriterion.vlanId() == VlanId.NONE) { |
| vidCriterion = (VlanIdCriterion) Criteria.matchVlanId(assignedVlan); |
| } |
| // ofdpa cannot match on ALL portnumber, so we need to use separate |
| // rules for each port. |
| List<PortNumber> portnums = new ArrayList<PortNumber>(); |
| if (portCriterion.port() == PortNumber.ALL) { |
| for (Port port : deviceService.getPorts(deviceId)) { |
| if (port.number().toLong() > 0 && port.number().toLong() < OFPP_MAX) { |
| portnums.add(port.number()); |
| } |
| } |
| } else { |
| portnums.add(portCriterion.port()); |
| } |
| |
| List<FlowRule> rules = new ArrayList<FlowRule>(); |
| for (PortNumber pnum : portnums) { |
| OfdpaMatchVlanVid ofdpaMatchVlanVid = new OfdpaMatchVlanVid(vidCriterion.vlanId()); |
| // for unicast IP packets |
| TrafficSelector.Builder selector = DefaultTrafficSelector.builder(); |
| TrafficTreatment.Builder treatment = DefaultTrafficTreatment.builder(); |
| selector.matchInPort(pnum); |
| selector.extension(ofdpaMatchVlanVid, deviceId); |
| selector.matchEthType(Ethernet.TYPE_IPV4); |
| selector.matchEthDst(ethCriterion.mac()); |
| treatment.transition(UNICAST_ROUTING_TABLE); |
| FlowRule rule = DefaultFlowRule.builder() |
| .forDevice(deviceId) |
| .withSelector(selector.build()) |
| .withTreatment(treatment.build()) |
| .withPriority(DEFAULT_PRIORITY) |
| .fromApp(applicationId) |
| .makePermanent() |
| .forTable(TMAC_TABLE).build(); |
| rules.add(rule); |
| //for MPLS packets |
| selector = DefaultTrafficSelector.builder(); |
| treatment = DefaultTrafficTreatment.builder(); |
| selector.matchInPort(pnum); |
| selector.extension(ofdpaMatchVlanVid, deviceId); |
| selector.matchEthType(Ethernet.MPLS_UNICAST); |
| selector.matchEthDst(ethCriterion.mac()); |
| treatment.transition(MPLS_TABLE_0); |
| rule = DefaultFlowRule.builder() |
| .forDevice(deviceId) |
| .withSelector(selector.build()) |
| .withTreatment(treatment.build()) |
| .withPriority(DEFAULT_PRIORITY) |
| .fromApp(applicationId) |
| .makePermanent() |
| .forTable(TMAC_TABLE).build(); |
| rules.add(rule); |
| } |
| return rules; |
| } |
| |
| protected List<FlowRule> processEthDstOnlyFilter(EthCriterion ethCriterion, |
| ApplicationId applicationId) { |
| TrafficSelector.Builder selector = DefaultTrafficSelector.builder(); |
| TrafficTreatment.Builder treatment = DefaultTrafficTreatment.builder(); |
| selector.matchEthType(Ethernet.TYPE_IPV4); |
| selector.matchEthDst(ethCriterion.mac()); |
| treatment.transition(UNICAST_ROUTING_TABLE); |
| FlowRule rule = DefaultFlowRule.builder() |
| .forDevice(deviceId) |
| .withSelector(selector.build()) |
| .withTreatment(treatment.build()) |
| .withPriority(DEFAULT_PRIORITY) |
| .fromApp(applicationId) |
| .makePermanent() |
| .forTable(TMAC_TABLE).build(); |
| return ImmutableList.<FlowRule>builder().add(rule).build(); |
| } |
| |
| protected List<FlowRule> processMcastEthDstFilter(EthCriterion ethCriterion, |
| ApplicationId applicationId) { |
| TrafficSelector.Builder selector = DefaultTrafficSelector.builder(); |
| TrafficTreatment.Builder treatment = DefaultTrafficTreatment.builder(); |
| selector.matchEthType(Ethernet.TYPE_IPV4); |
| selector.matchEthDstMasked(ethCriterion.mac(), ethCriterion.mask()); |
| treatment.transition(MULTICAST_ROUTING_TABLE); |
| FlowRule rule = DefaultFlowRule.builder() |
| .forDevice(deviceId) |
| .withSelector(selector.build()) |
| .withTreatment(treatment.build()) |
| .withPriority(DEFAULT_PRIORITY) |
| .fromApp(applicationId) |
| .makePermanent() |
| .forTable(TMAC_TABLE).build(); |
| return ImmutableList.<FlowRule>builder().add(rule).build(); |
| } |
| |
| private Collection<FlowRule> processForward(ForwardingObjective fwd) { |
| switch (fwd.flag()) { |
| case SPECIFIC: |
| return processSpecific(fwd); |
| case VERSATILE: |
| return processVersatile(fwd); |
| default: |
| fail(fwd, ObjectiveError.UNKNOWN); |
| log.warn("Unknown forwarding flag {}", fwd.flag()); |
| } |
| return Collections.emptySet(); |
| } |
| |
| /** |
| * In the OF-DPA 2.0 pipeline, versatile forwarding objectives go to the |
| * ACL table. |
| * @param fwd the forwarding objective of type 'versatile' |
| * @return a collection of flow rules to be sent to the switch. An empty |
| * collection may be returned if there is a problem in processing |
| * the flow rule |
| */ |
| protected Collection<FlowRule> processVersatile(ForwardingObjective fwd) { |
| log.info("Processing versatile forwarding objective"); |
| |
| EthTypeCriterion ethType = |
| (EthTypeCriterion) fwd.selector().getCriterion(Criterion.Type.ETH_TYPE); |
| if (ethType == null) { |
| log.error("Versatile forwarding objective must include ethType"); |
| fail(fwd, ObjectiveError.BADPARAMS); |
| return Collections.emptySet(); |
| } |
| if (fwd.nextId() == null && fwd.treatment() == null) { |
| log.error("Forwarding objective {} from {} must contain " |
| + "nextId or Treatment", fwd.selector(), fwd.appId()); |
| fail(fwd, ObjectiveError.BADPARAMS); |
| return Collections.emptySet(); |
| } |
| |
| TrafficSelector.Builder sbuilder = DefaultTrafficSelector.builder(); |
| fwd.selector().criteria().forEach(criterion -> { |
| if (criterion instanceof VlanIdCriterion) { |
| VlanId vlanId = ((VlanIdCriterion) criterion).vlanId(); |
| // ensure that match does not include vlan = NONE as OF-DPA does not |
| // match untagged packets this way in the ACL table. |
| if (vlanId.equals(VlanId.NONE)) { |
| return; |
| } |
| OfdpaMatchVlanVid ofdpaMatchVlanVid = |
| new OfdpaMatchVlanVid(vlanId); |
| sbuilder.extension(ofdpaMatchVlanVid, deviceId); |
| } else { |
| sbuilder.add(criterion); |
| } |
| }); |
| |
| // XXX driver does not currently do type checking as per Tables 65-67 in |
| // OFDPA 2.0 spec. The only allowed treatment is a punt to the controller. |
| TrafficTreatment.Builder ttBuilder = DefaultTrafficTreatment.builder(); |
| if (fwd.treatment() != null) { |
| for (Instruction ins : fwd.treatment().allInstructions()) { |
| if (ins instanceof OutputInstruction) { |
| OutputInstruction o = (OutputInstruction) ins; |
| if (o.port() == PortNumber.CONTROLLER) { |
| ttBuilder.add(o); |
| } else { |
| log.warn("Only allowed treatments in versatile forwarding " |
| + "objectives are punts to the controller"); |
| } |
| } else { |
| log.warn("Cannot process instruction in versatile fwd {}", ins); |
| } |
| } |
| } |
| if (fwd.nextId() != null) { |
| // overide case |
| NextGroup next = getGroupForNextObjective(fwd.nextId()); |
| List<Deque<GroupKey>> gkeys = appKryo.deserialize(next.data()); |
| // we only need the top level group's key to point the flow to it |
| Group group = groupService.getGroup(deviceId, gkeys.get(0).peekFirst()); |
| if (group == null) { |
| log.warn("Group with key:{} for next-id:{} not found in dev:{}", |
| gkeys.get(0).peekFirst(), fwd.nextId(), deviceId); |
| fail(fwd, ObjectiveError.GROUPMISSING); |
| return Collections.emptySet(); |
| } |
| ttBuilder.deferred().group(group.id()); |
| } |
| |
| FlowRule.Builder ruleBuilder = DefaultFlowRule.builder() |
| .fromApp(fwd.appId()) |
| .withPriority(fwd.priority()) |
| .forDevice(deviceId) |
| .withSelector(sbuilder.build()) |
| .withTreatment(ttBuilder.build()) |
| .makePermanent() |
| .forTable(ACL_TABLE); |
| return Collections.singletonList(ruleBuilder.build()); |
| } |
| |
| /** |
| * In the OF-DPA 2.0 pipeline, specific forwarding refers to the IP table |
| * (unicast or multicast) or the L2 table (mac + vlan) or the MPLS table. |
| * |
| * @param fwd the forwarding objective of type 'specific' |
| * @return a collection of flow rules. Typically there will be only one |
| * for this type of forwarding objective. An empty set may be |
| * returned if there is an issue in processing the objective. |
| */ |
| protected Collection<FlowRule> processSpecific(ForwardingObjective fwd) { |
| log.debug("Processing specific fwd objective:{} in dev:{} with next:{}", |
| fwd.id(), deviceId, fwd.nextId()); |
| boolean isEthTypeObj = isSupportedEthTypeObjective(fwd); |
| boolean isEthDstObj = isSupportedEthDstObjective(fwd); |
| |
| if (isEthTypeObj) { |
| return processEthTypeSpecific(fwd); |
| } else if (isEthDstObj) { |
| return processEthDstSpecific(fwd); |
| } else { |
| log.warn("processSpecific: Unsupported forwarding objective " |
| + "criteria fwd:{} in dev:{}", fwd.nextId(), deviceId); |
| fail(fwd, ObjectiveError.UNSUPPORTED); |
| return Collections.emptySet(); |
| } |
| } |
| |
| private boolean isSupportedEthTypeObjective(ForwardingObjective fwd) { |
| TrafficSelector selector = fwd.selector(); |
| EthTypeCriterion ethType = (EthTypeCriterion) selector |
| .getCriterion(Criterion.Type.ETH_TYPE); |
| return !((ethType == null) || |
| ((ethType.ethType().toShort() != Ethernet.TYPE_IPV4) && |
| (ethType.ethType().toShort() != Ethernet.MPLS_UNICAST))); |
| } |
| |
| private boolean isSupportedEthDstObjective(ForwardingObjective fwd) { |
| TrafficSelector selector = fwd.selector(); |
| EthCriterion ethDst = (EthCriterion) selector |
| .getCriterion(Criterion.Type.ETH_DST); |
| VlanIdCriterion vlanId = (VlanIdCriterion) selector |
| .getCriterion(Criterion.Type.VLAN_VID); |
| return !(ethDst == null && vlanId == null); |
| } |
| |
| /** |
| * Handles forwarding rules to the IP and MPLS tables. |
| * |
| * @param fwd the forwarding objective |
| * @return A collection of flow rules, or an empty set |
| */ |
| protected Collection<FlowRule> processEthTypeSpecific(ForwardingObjective fwd) { |
| TrafficSelector selector = fwd.selector(); |
| EthTypeCriterion ethType = |
| (EthTypeCriterion) selector.getCriterion(Criterion.Type.ETH_TYPE); |
| boolean defaultRule = false; |
| boolean popMpls = false; |
| int forTableId; |
| TrafficSelector.Builder filteredSelector = DefaultTrafficSelector.builder(); |
| TrafficTreatment.Builder tb = DefaultTrafficTreatment.builder(); |
| TrafficSelector.Builder complementarySelector = DefaultTrafficSelector.builder(); |
| |
| /* |
| * NOTE: The switch does not support matching 0.0.0.0/0. |
| * Split it into 0.0.0.0/1 and 128.0.0.0/1 |
| */ |
| if (ethType.ethType().toShort() == Ethernet.TYPE_IPV4) { |
| IpPrefix ipv4Dst = ((IPCriterion) selector.getCriterion(Criterion.Type.IPV4_DST)).ip(); |
| if (ipv4Dst.isMulticast()) { |
| if (ipv4Dst.prefixLength() != 32) { |
| log.warn("Multicast specific forwarding objective can only be /32"); |
| fail(fwd, ObjectiveError.BADPARAMS); |
| return ImmutableSet.of(); |
| } |
| VlanId assignedVlan = readVlanFromSelector(fwd.meta()); |
| if (assignedVlan == null) { |
| log.warn("VLAN ID required by multicast specific fwd obj is missing. Abort."); |
| fail(fwd, ObjectiveError.BADPARAMS); |
| return ImmutableSet.of(); |
| } |
| OfdpaMatchVlanVid ofdpaMatchVlanVid = new OfdpaMatchVlanVid(assignedVlan); |
| filteredSelector.extension(ofdpaMatchVlanVid, deviceId); |
| filteredSelector.matchEthType(Ethernet.TYPE_IPV4).matchIPDst(ipv4Dst); |
| forTableId = MULTICAST_ROUTING_TABLE; |
| log.debug("processing IPv4 multicast specific forwarding objective {} -> next:{}" |
| + " in dev:{}", fwd.id(), fwd.nextId(), deviceId); |
| } else { |
| if (ipv4Dst.prefixLength() > 0) { |
| filteredSelector.matchEthType(Ethernet.TYPE_IPV4).matchIPDst(ipv4Dst); |
| } else { |
| filteredSelector.matchEthType(Ethernet.TYPE_IPV4) |
| .matchIPDst(IpPrefix.valueOf("0.0.0.0/1")); |
| complementarySelector.matchEthType(Ethernet.TYPE_IPV4) |
| .matchIPDst(IpPrefix.valueOf("128.0.0.0/1")); |
| defaultRule = true; |
| } |
| forTableId = UNICAST_ROUTING_TABLE; |
| log.debug("processing IPv4 unicast specific forwarding objective {} -> next:{}" |
| + " in dev:{}", fwd.id(), fwd.nextId(), deviceId); |
| } |
| |
| if (fwd.treatment() != null) { |
| for (Instruction instr : fwd.treatment().allInstructions()) { |
| if (instr instanceof L3ModificationInstruction && |
| ((L3ModificationInstruction) instr).subtype() == L3SubType.DEC_TTL) { |
| tb.deferred().add(instr); |
| } |
| } |
| } |
| |
| } else { |
| filteredSelector |
| .matchEthType(Ethernet.MPLS_UNICAST) |
| .matchMplsLabel(((MplsCriterion) |
| selector.getCriterion(Criterion.Type.MPLS_LABEL)).label()); |
| MplsBosCriterion bos = (MplsBosCriterion) selector |
| .getCriterion(Criterion.Type.MPLS_BOS); |
| if (bos != null) { |
| filteredSelector.matchMplsBos(bos.mplsBos()); |
| } |
| forTableId = MPLS_TABLE_1; |
| log.debug("processing MPLS specific forwarding objective {} -> next:{}" |
| + " in dev {}", fwd.id(), fwd.nextId(), deviceId); |
| |
| if (fwd.treatment() != null) { |
| for (Instruction instr : fwd.treatment().allInstructions()) { |
| if (instr instanceof L2ModificationInstruction && |
| ((L2ModificationInstruction) instr).subtype() == L2SubType.MPLS_POP) { |
| popMpls = true; |
| tb.immediate().add(instr); |
| } |
| if (instr instanceof L3ModificationInstruction && |
| ((L3ModificationInstruction) instr).subtype() == L3SubType.DEC_TTL) { |
| // FIXME Should modify the app to send the correct DEC_MPLS_TTL instruction |
| tb.immediate().decMplsTtl(); |
| } |
| if (instr instanceof L3ModificationInstruction && |
| ((L3ModificationInstruction) instr).subtype() == L3SubType.TTL_IN) { |
| tb.immediate().add(instr); |
| } |
| } |
| } |
| } |
| |
| if (fwd.nextId() != null) { |
| if (forTableId == MPLS_TABLE_1 && !popMpls) { |
| log.warn("SR CONTINUE case cannot be handled as MPLS ECMP " |
| + "is not implemented in OF-DPA yet. Aborting this flow {} -> next:{}" |
| + "in this device {}", fwd.id(), fwd.nextId(), deviceId); |
| // XXX We could convert to forwarding to a single-port, via a |
| // MPLS interface, or a MPLS SWAP (with-same) but that would |
| // have to be handled in the next-objective. Also the pop-mpls |
| // logic used here won't work in non-BoS case. |
| fail(fwd, ObjectiveError.FLOWINSTALLATIONFAILED); |
| return Collections.emptySet(); |
| } |
| |
| NextGroup next = getGroupForNextObjective(fwd.nextId()); |
| if (next != null) { |
| List<Deque<GroupKey>> gkeys = appKryo.deserialize(next.data()); |
| // we only need the top level group's key to point the flow to it |
| Group group = groupService.getGroup(deviceId, gkeys.get(0).peekFirst()); |
| if (group == null) { |
| log.warn("Group with key:{} for next-id:{} not found in dev:{}", |
| gkeys.get(0).peekFirst(), fwd.nextId(), deviceId); |
| fail(fwd, ObjectiveError.GROUPMISSING); |
| return Collections.emptySet(); |
| } |
| tb.deferred().group(group.id()); |
| } else { |
| log.warn("Cannot find group for nextId:{} in dev:{}. Aborting fwd:{}", |
| fwd.nextId(), deviceId, fwd.id()); |
| fail(fwd, ObjectiveError.FLOWINSTALLATIONFAILED); |
| return Collections.emptySet(); |
| } |
| } |
| tb.transition(ACL_TABLE); |
| FlowRule.Builder ruleBuilder = DefaultFlowRule.builder() |
| .fromApp(fwd.appId()) |
| .withPriority(fwd.priority()) |
| .forDevice(deviceId) |
| .withSelector(filteredSelector.build()) |
| .withTreatment(tb.build()) |
| .forTable(forTableId); |
| |
| if (fwd.permanent()) { |
| ruleBuilder.makePermanent(); |
| } else { |
| ruleBuilder.makeTemporary(fwd.timeout()); |
| } |
| Collection<FlowRule> flowRuleCollection = new ArrayList<>(); |
| flowRuleCollection.add(ruleBuilder.build()); |
| if (defaultRule) { |
| FlowRule.Builder rule = DefaultFlowRule.builder() |
| .fromApp(fwd.appId()) |
| .withPriority(fwd.priority()) |
| .forDevice(deviceId) |
| .withSelector(complementarySelector.build()) |
| .withTreatment(tb.build()) |
| .forTable(forTableId); |
| if (fwd.permanent()) { |
| rule.makePermanent(); |
| } else { |
| rule.makeTemporary(fwd.timeout()); |
| } |
| flowRuleCollection.add(rule.build()); |
| log.debug("Default rule 0.0.0.0/0 is being installed two rules"); |
| } |
| |
| return flowRuleCollection; |
| } |
| |
| /** |
| * Handles forwarding rules to the L2 bridging table. Flow actions are not |
| * allowed in the bridging table - instead we use L2 Interface group or |
| * L2 flood group |
| * |
| * @param fwd the forwarding objective |
| * @return A collection of flow rules, or an empty set |
| */ |
| protected Collection<FlowRule> processEthDstSpecific(ForwardingObjective fwd) { |
| List<FlowRule> rules = new ArrayList<>(); |
| |
| // Build filtered selector |
| TrafficSelector selector = fwd.selector(); |
| EthCriterion ethCriterion = (EthCriterion) selector |
| .getCriterion(Criterion.Type.ETH_DST); |
| VlanIdCriterion vlanIdCriterion = (VlanIdCriterion) selector |
| .getCriterion(Criterion.Type.VLAN_VID); |
| |
| if (vlanIdCriterion == null) { |
| log.warn("Forwarding objective for bridging requires vlan. Not " |
| + "installing fwd:{} in dev:{}", fwd.id(), deviceId); |
| fail(fwd, ObjectiveError.BADPARAMS); |
| return Collections.emptySet(); |
| } |
| |
| TrafficSelector.Builder filteredSelectorBuilder = |
| DefaultTrafficSelector.builder(); |
| // Do not match MacAddress for subnet broadcast entry |
| if (!ethCriterion.mac().equals(MacAddress.NONE)) { |
| filteredSelectorBuilder.matchEthDst(ethCriterion.mac()); |
| log.debug("processing L2 forwarding objective:{} -> next:{} in dev:{}", |
| fwd.id(), fwd.nextId(), deviceId); |
| } else { |
| log.debug("processing L2 Broadcast forwarding objective:{} -> next:{} " |
| + "in dev:{} for vlan:{}", |
| fwd.id(), fwd.nextId(), deviceId, vlanIdCriterion.vlanId()); |
| } |
| OfdpaMatchVlanVid ofdpaMatchVlanVid = new OfdpaMatchVlanVid(vlanIdCriterion.vlanId()); |
| filteredSelectorBuilder.extension(ofdpaMatchVlanVid, deviceId); |
| TrafficSelector filteredSelector = filteredSelectorBuilder.build(); |
| |
| if (fwd.treatment() != null) { |
| log.warn("Ignoring traffic treatment in fwd rule {} meant for L2 table" |
| + "for dev:{}. Expecting only nextId", fwd.id(), deviceId); |
| } |
| |
| TrafficTreatment.Builder treatmentBuilder = DefaultTrafficTreatment.builder(); |
| if (fwd.nextId() != null) { |
| NextGroup next = getGroupForNextObjective(fwd.nextId()); |
| if (next != null) { |
| List<Deque<GroupKey>> gkeys = appKryo.deserialize(next.data()); |
| // we only need the top level group's key to point the flow to it |
| Group group = groupService.getGroup(deviceId, gkeys.get(0).peekFirst()); |
| if (group != null) { |
| treatmentBuilder.deferred().group(group.id()); |
| } else { |
| log.warn("Group with key:{} for next-id:{} not found in dev:{}", |
| gkeys.get(0).peekFirst(), fwd.nextId(), deviceId); |
| fail(fwd, ObjectiveError.GROUPMISSING); |
| return Collections.emptySet(); |
| } |
| } |
| } |
| treatmentBuilder.immediate().transition(ACL_TABLE); |
| TrafficTreatment filteredTreatment = treatmentBuilder.build(); |
| |
| // Build bridging table entries |
| FlowRule.Builder flowRuleBuilder = DefaultFlowRule.builder(); |
| flowRuleBuilder.fromApp(fwd.appId()) |
| .withPriority(fwd.priority()) |
| .forDevice(deviceId) |
| .withSelector(filteredSelector) |
| .withTreatment(filteredTreatment) |
| .forTable(BRIDGING_TABLE); |
| if (fwd.permanent()) { |
| flowRuleBuilder.makePermanent(); |
| } else { |
| flowRuleBuilder.makeTemporary(fwd.timeout()); |
| } |
| rules.add(flowRuleBuilder.build()); |
| return rules; |
| } |
| |
| protected NextGroup getGroupForNextObjective(Integer nextId) { |
| NextGroup next = flowObjectiveStore.getNextGroup(nextId); |
| if (next != null) { |
| List<Deque<GroupKey>> gkeys = appKryo.deserialize(next.data()); |
| if (gkeys != null && !gkeys.isEmpty()) { |
| return next; |
| } else { |
| log.warn("Empty next group found in FlowObjective store for " |
| + "next-id:{} in dev:{}", nextId, deviceId); |
| } |
| } else { |
| log.warn("next-id {} not found in Flow objective store for dev:{}", |
| nextId, deviceId); |
| } |
| return null; |
| } |
| |
| protected static void pass(Objective obj) { |
| obj.context().ifPresent(context -> context.onSuccess(obj)); |
| } |
| |
| protected static void fail(Objective obj, ObjectiveError error) { |
| obj.context().ifPresent(context -> context.onError(obj, error)); |
| } |
| |
| @Override |
| public List<String> getNextMappings(NextGroup nextGroup) { |
| List<String> mappings = new ArrayList<>(); |
| List<Deque<GroupKey>> gkeys = appKryo.deserialize(nextGroup.data()); |
| for (Deque<GroupKey> gkd : gkeys) { |
| Group lastGroup = null; |
| StringBuffer gchain = new StringBuffer(); |
| for (GroupKey gk : gkd) { |
| Group g = groupService.getGroup(deviceId, gk); |
| if (g == null) { |
| gchain.append(" NoGrp").append(" -->"); |
| continue; |
| } |
| gchain.append(" 0x").append(Integer.toHexString(g.id().id())) |
| .append(" -->"); |
| lastGroup = g; |
| } |
| // add port information for last group in group-chain |
| List<Instruction> lastGroupIns = new ArrayList<Instruction>(); |
| if (lastGroup != null) { |
| lastGroupIns = lastGroup.buckets().buckets().get(0) |
| .treatment().allInstructions(); |
| } |
| for (Instruction i: lastGroupIns) { |
| if (i instanceof OutputInstruction) { |
| gchain.append(" port:").append(((OutputInstruction) i).port()); |
| } |
| } |
| mappings.add(gchain.toString()); |
| } |
| return mappings; |
| } |
| |
| protected static VlanId readVlanFromSelector(TrafficSelector selector) { |
| if (selector == null) { |
| return null; |
| } |
| Criterion criterion = selector.getCriterion(Criterion.Type.VLAN_VID); |
| return (criterion == null) |
| ? null : ((VlanIdCriterion) criterion).vlanId(); |
| } |
| |
| protected static IpPrefix readIpDstFromSelector(TrafficSelector selector) { |
| if (selector == null) { |
| return null; |
| } |
| Criterion criterion = selector.getCriterion(Criterion.Type.IPV4_DST); |
| return (criterion == null) ? null : ((IPCriterion) criterion).ip(); |
| } |
| |
| private static VlanId readVlanFromTreatment(TrafficTreatment treatment) { |
| if (treatment == null) { |
| return null; |
| } |
| for (Instruction i : treatment.allInstructions()) { |
| if (i instanceof ModVlanIdInstruction) { |
| return ((ModVlanIdInstruction) i).vlanId(); |
| } |
| } |
| return null; |
| } |
| } |