| /* |
| * Copyright 2015-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.segmentrouting; |
| |
| import org.onlab.packet.EthType; |
| import org.onlab.packet.Ethernet; |
| import org.onlab.packet.Ip4Address; |
| import org.onlab.packet.Ip4Prefix; |
| import org.onlab.packet.IpPrefix; |
| import org.onlab.packet.MacAddress; |
| import org.onlab.packet.MplsLabel; |
| import org.onlab.packet.VlanId; |
| import org.onosproject.net.ConnectPoint; |
| import org.onosproject.net.flowobjective.DefaultObjectiveContext; |
| import org.onosproject.net.flowobjective.ObjectiveContext; |
| import org.onosproject.segmentrouting.config.DeviceConfigNotFoundException; |
| import org.onosproject.segmentrouting.config.DeviceConfiguration; |
| import org.onosproject.segmentrouting.grouphandler.NeighborSet; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.Port; |
| 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.criteria.Criteria; |
| import org.onosproject.net.flowobjective.DefaultFilteringObjective; |
| import org.onosproject.net.flowobjective.DefaultForwardingObjective; |
| import org.onosproject.net.flowobjective.FilteringObjective; |
| import org.onosproject.net.flowobjective.ForwardingObjective; |
| import org.onosproject.net.flowobjective.ForwardingObjective.Builder; |
| import org.onosproject.net.flowobjective.ForwardingObjective.Flag; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.atomic.AtomicLong; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| /** |
| * Populator of segment routing flow rules. |
| */ |
| public class RoutingRulePopulator { |
| private static final Logger log = LoggerFactory |
| .getLogger(RoutingRulePopulator.class); |
| |
| private AtomicLong rulePopulationCounter; |
| private SegmentRoutingManager srManager; |
| private DeviceConfiguration config; |
| |
| /** |
| * Creates a RoutingRulePopulator object. |
| * |
| * @param srManager segment routing manager reference |
| */ |
| public RoutingRulePopulator(SegmentRoutingManager srManager) { |
| this.srManager = srManager; |
| this.config = checkNotNull(srManager.deviceConfiguration); |
| this.rulePopulationCounter = new AtomicLong(0); |
| } |
| |
| /** |
| * Resets the population counter. |
| */ |
| public void resetCounter() { |
| rulePopulationCounter.set(0); |
| } |
| |
| /** |
| * Returns the number of rules populated. |
| * |
| * @return number of rules |
| */ |
| public long getCounter() { |
| return rulePopulationCounter.get(); |
| } |
| |
| /** |
| * Populates IP flow rules for specific hosts directly connected to the |
| * switch. |
| * |
| * @param deviceId switch ID to set the rules |
| * @param hostIp host IP address |
| * @param hostMac host MAC address |
| * @param outPort port where the host is connected |
| */ |
| public void populateIpRuleForHost(DeviceId deviceId, Ip4Address hostIp, |
| MacAddress hostMac, PortNumber outPort) { |
| log.debug("Populate IP table entry for host {} at {}:{}", |
| hostIp, deviceId, outPort); |
| ForwardingObjective.Builder fwdBuilder; |
| try { |
| fwdBuilder = getForwardingObjectiveBuilder( |
| deviceId, hostIp, hostMac, outPort); |
| } catch (DeviceConfigNotFoundException e) { |
| log.warn(e.getMessage() + " Aborting populateIpRuleForHost."); |
| return; |
| } |
| ObjectiveContext context = new DefaultObjectiveContext( |
| (objective) -> log.debug("IP rule for host {} populated", hostIp), |
| (objective, error) -> |
| log.warn("Failed to populate IP rule for host {}: {}", hostIp, error)); |
| srManager.flowObjectiveService.forward(deviceId, fwdBuilder.add(context)); |
| rulePopulationCounter.incrementAndGet(); |
| } |
| |
| /** |
| * Removes IP rules for host when the host is gone. |
| * |
| * @param deviceId device ID of the device that host attaches to |
| * @param hostIp IP address of the host |
| * @param hostMac MAC address of the host |
| * @param outPort port that host attaches to |
| */ |
| public void revokeIpRuleForHost(DeviceId deviceId, Ip4Address hostIp, |
| MacAddress hostMac, PortNumber outPort) { |
| log.debug("Revoke IP table entry for host {} at {}:{}", |
| hostIp, deviceId, outPort); |
| ForwardingObjective.Builder fwdBuilder; |
| try { |
| fwdBuilder = getForwardingObjectiveBuilder( |
| deviceId, hostIp, hostMac, outPort); |
| } catch (DeviceConfigNotFoundException e) { |
| log.warn(e.getMessage() + " Aborting revokeIpRuleForHost."); |
| return; |
| } |
| ObjectiveContext context = new DefaultObjectiveContext( |
| (objective) -> log.debug("IP rule for host {} revoked", hostIp), |
| (objective, error) -> |
| log.warn("Failed to revoke IP rule for host {}: {}", hostIp, error)); |
| srManager.flowObjectiveService.forward(deviceId, fwdBuilder.remove(context)); |
| } |
| |
| private ForwardingObjective.Builder getForwardingObjectiveBuilder( |
| DeviceId deviceId, Ip4Address hostIp, |
| MacAddress hostMac, PortNumber outPort) |
| throws DeviceConfigNotFoundException { |
| MacAddress deviceMac; |
| deviceMac = config.getDeviceMac(deviceId); |
| int priority; |
| |
| TrafficSelector.Builder sbuilder = DefaultTrafficSelector.builder(); |
| TrafficTreatment.Builder tbuilder = DefaultTrafficTreatment.builder(); |
| |
| sbuilder.matchEthType(Ethernet.TYPE_IPV4); |
| // Special case for default route |
| if (hostIp.isZero()) { |
| sbuilder.matchIPDst(IpPrefix.valueOf(hostIp, 0)); |
| priority = SegmentRoutingService.MIN_IP_PRIORITY; |
| } else { |
| Ip4Prefix hostIpPrefix = Ip4Prefix.valueOf(hostIp, IpPrefix.MAX_INET_MASK_LENGTH); |
| sbuilder.matchIPDst(hostIpPrefix); |
| priority = getPriorityFromPrefix(hostIpPrefix); |
| } |
| TrafficSelector selector = sbuilder.build(); |
| |
| tbuilder.deferred() |
| .setEthDst(hostMac) |
| .setEthSrc(deviceMac) |
| .setOutput(outPort); |
| TrafficTreatment treatment = tbuilder.build(); |
| |
| // All forwarding is via Groups. Drivers can re-purpose to flow-actions if needed. |
| // for switch pipelines that need it, provide outgoing vlan as metadata |
| VlanId outvlan = null; |
| Ip4Prefix subnet = srManager.deviceConfiguration.getPortSubnet(deviceId, outPort); |
| if (subnet == null) { |
| outvlan = VlanId.vlanId(SegmentRoutingManager.ASSIGNED_VLAN_NO_SUBNET); |
| } else { |
| outvlan = srManager.getSubnetAssignedVlanId(deviceId, subnet); |
| } |
| TrafficSelector meta = DefaultTrafficSelector.builder() |
| .matchVlanId(outvlan).build(); |
| int portNextObjId = srManager.getPortNextObjectiveId(deviceId, outPort, |
| treatment, meta); |
| |
| return DefaultForwardingObjective.builder() |
| .withSelector(selector) |
| .nextStep(portNextObjId) |
| .fromApp(srManager.appId).makePermanent() |
| .withPriority(priority) |
| .withFlag(ForwardingObjective.Flag.SPECIFIC); |
| } |
| |
| /** |
| * Populates IP flow rules for the subnets of the destination router. |
| * |
| * @param deviceId switch ID to set the rules |
| * @param subnets subnet information |
| * @param destSw destination switch ID |
| * @param nextHops next hop switch ID list |
| * @return true if all rules are set successfully, false otherwise |
| */ |
| public boolean populateIpRuleForSubnet(DeviceId deviceId, |
| Set<Ip4Prefix> subnets, |
| DeviceId destSw, |
| Set<DeviceId> nextHops) { |
| |
| for (IpPrefix subnet : subnets) { |
| if (!populateIpRuleForRouter(deviceId, subnet, destSw, nextHops)) { |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| /** |
| * Populates IP flow rules for the router IP address. |
| * |
| * @param deviceId target device ID to set the rules |
| * @param ipPrefix the IP address of the destination router |
| * @param destSw device ID of the destination router |
| * @param nextHops next hop switch ID list |
| * @return true if all rules are set successfully, false otherwise |
| */ |
| public boolean populateIpRuleForRouter(DeviceId deviceId, |
| IpPrefix ipPrefix, DeviceId destSw, |
| Set<DeviceId> nextHops) { |
| int segmentId; |
| try { |
| segmentId = config.getSegmentId(destSw); |
| } catch (DeviceConfigNotFoundException e) { |
| log.warn(e.getMessage() + " Aborting populateIpRuleForRouter."); |
| return false; |
| } |
| |
| TrafficSelector.Builder sbuilder = DefaultTrafficSelector.builder(); |
| sbuilder.matchIPDst(ipPrefix); |
| sbuilder.matchEthType(Ethernet.TYPE_IPV4); |
| TrafficSelector selector = sbuilder.build(); |
| |
| TrafficTreatment.Builder tbuilder = DefaultTrafficTreatment.builder(); |
| NeighborSet ns; |
| TrafficTreatment treatment; |
| |
| // If the next hop is the same as the final destination, then MPLS label |
| // is not set. |
| if (nextHops.size() == 1 && nextHops.toArray()[0].equals(destSw)) { |
| tbuilder.immediate().decNwTtl(); |
| ns = new NeighborSet(nextHops); |
| treatment = tbuilder.build(); |
| } else { |
| ns = new NeighborSet(nextHops, segmentId); |
| treatment = null; |
| } |
| |
| // setup metadata to pass to nextObjective - indicate the vlan on egress |
| // if needed by the switch pipeline. Since neighbor sets are always to |
| // other neighboring routers, there is no subnet assigned on those ports. |
| TrafficSelector.Builder metabuilder = DefaultTrafficSelector.builder(selector); |
| metabuilder.matchVlanId( |
| VlanId.vlanId(SegmentRoutingManager.ASSIGNED_VLAN_NO_SUBNET)); |
| |
| int nextId = srManager.getNextObjectiveId(deviceId, ns, metabuilder.build()); |
| if (nextId <= 0) { |
| log.warn("No next objective in {} for ns: {}", deviceId, ns); |
| return false; |
| } |
| |
| ForwardingObjective.Builder fwdBuilder = DefaultForwardingObjective |
| .builder() |
| .fromApp(srManager.appId) |
| .makePermanent() |
| .nextStep(nextId) |
| .withSelector(selector) |
| .withPriority(getPriorityFromPrefix(ipPrefix)) |
| .withFlag(ForwardingObjective.Flag.SPECIFIC); |
| if (treatment != null) { |
| fwdBuilder.withTreatment(treatment); |
| } |
| log.debug("Installing IPv4 forwarding objective " |
| + "for router IP/subnet {} in switch {}", |
| ipPrefix, |
| deviceId); |
| ObjectiveContext context = new DefaultObjectiveContext( |
| (objective) -> log.debug("IP rule for router {} populated", ipPrefix), |
| (objective, error) -> |
| log.warn("Failed to populate IP rule for router {}: {}", ipPrefix, error)); |
| srManager.flowObjectiveService.forward(deviceId, fwdBuilder.add(context)); |
| rulePopulationCounter.incrementAndGet(); |
| |
| return true; |
| } |
| |
| /** |
| * Populates MPLS flow rules to all routers. |
| * |
| * @param deviceId target device ID of the switch to set the rules |
| * @param destSwId destination switch device ID |
| * @param nextHops next hops switch ID list |
| * @return true if all rules are set successfully, false otherwise |
| */ |
| public boolean populateMplsRule(DeviceId deviceId, DeviceId destSwId, |
| Set<DeviceId> nextHops) { |
| int segmentId; |
| try { |
| segmentId = config.getSegmentId(destSwId); |
| } catch (DeviceConfigNotFoundException e) { |
| log.warn(e.getMessage() + " Aborting populateMplsRule."); |
| return false; |
| } |
| |
| TrafficSelector.Builder sbuilder = DefaultTrafficSelector.builder(); |
| List<ForwardingObjective.Builder> fwdObjBuilders = new ArrayList<>(); |
| |
| // TODO Handle the case of Bos == false |
| sbuilder.matchEthType(Ethernet.MPLS_UNICAST); |
| sbuilder.matchMplsLabel(MplsLabel.mplsLabel(segmentId)); |
| sbuilder.matchMplsBos(true); |
| TrafficSelector selector = sbuilder.build(); |
| |
| // setup metadata to pass to nextObjective - indicate the vlan on egress |
| // if needed by the switch pipeline. Since mpls next-hops are always to |
| // other neighboring routers, there is no subnet assigned on those ports. |
| TrafficSelector.Builder metabuilder = DefaultTrafficSelector.builder(selector); |
| metabuilder.matchVlanId( |
| VlanId.vlanId(SegmentRoutingManager.ASSIGNED_VLAN_NO_SUBNET)); |
| |
| // If the next hop is the destination router for the segment, do pop |
| if (nextHops.size() == 1 && destSwId.equals(nextHops.toArray()[0])) { |
| log.debug("populateMplsRule: Installing MPLS forwarding objective for " |
| + "label {} in switch {} with pop", segmentId, deviceId); |
| |
| // bos pop case (php) |
| ForwardingObjective.Builder fwdObjBosBuilder = |
| getMplsForwardingObjective(deviceId, |
| nextHops, |
| true, |
| true, |
| metabuilder.build()); |
| if (fwdObjBosBuilder == null) { |
| return false; |
| } |
| fwdObjBuilders.add(fwdObjBosBuilder); |
| |
| // XXX not-bos pop case, SR app multi-label not implemented yet |
| /*ForwardingObjective.Builder fwdObjNoBosBuilder = |
| getMplsForwardingObjective(deviceId, |
| nextHops, |
| true, |
| false);*/ |
| |
| } else { |
| // next hop is not destination, SR CONTINUE case (swap with self) |
| log.debug("Installing MPLS forwarding objective for " |
| + "label {} in switch {} without pop", segmentId, deviceId); |
| |
| // continue case with bos - this does get triggered in edge routers |
| // and in core routers - driver can handle depending on availability |
| // of MPLS ECMP or not |
| ForwardingObjective.Builder fwdObjBosBuilder = |
| getMplsForwardingObjective(deviceId, |
| nextHops, |
| false, |
| true, |
| metabuilder.build()); |
| if (fwdObjBosBuilder == null) { |
| return false; |
| } |
| fwdObjBuilders.add(fwdObjBosBuilder); |
| |
| // XXX continue case with not-bos - SR app multi label not implemented yet |
| // also requires MPLS ECMP |
| /*ForwardingObjective.Builder fwdObjNoBosBuilder = |
| getMplsForwardingObjective(deviceId, |
| nextHops, |
| false, |
| false); */ |
| |
| } |
| |
| for (ForwardingObjective.Builder fwdObjBuilder : fwdObjBuilders) { |
| ((Builder) ((Builder) fwdObjBuilder.fromApp(srManager.appId) |
| .makePermanent()).withSelector(selector) |
| .withPriority(SegmentRoutingService.DEFAULT_PRIORITY)) |
| .withFlag(ForwardingObjective.Flag.SPECIFIC); |
| ObjectiveContext context = new DefaultObjectiveContext( |
| (objective) -> log.debug("MPLS rule for SID {} populated", segmentId), |
| (objective, error) -> |
| log.warn("Failed to populate MPLS rule for SID {}: {}", segmentId, error)); |
| srManager.flowObjectiveService.forward(deviceId, fwdObjBuilder.add(context)); |
| rulePopulationCounter.incrementAndGet(); |
| } |
| |
| return true; |
| } |
| |
| private ForwardingObjective.Builder getMplsForwardingObjective( |
| DeviceId deviceId, |
| Set<DeviceId> nextHops, |
| boolean phpRequired, |
| boolean isBos, |
| TrafficSelector meta) { |
| |
| ForwardingObjective.Builder fwdBuilder = DefaultForwardingObjective |
| .builder().withFlag(ForwardingObjective.Flag.SPECIFIC); |
| |
| TrafficTreatment.Builder tbuilder = DefaultTrafficTreatment.builder(); |
| |
| if (phpRequired) { |
| // php case - pop should always be flow-action |
| log.debug("getMplsForwardingObjective: php required"); |
| tbuilder.deferred().copyTtlIn(); |
| if (isBos) { |
| tbuilder.deferred().popMpls(EthType.EtherType.IPV4.ethType()) |
| .decNwTtl(); |
| } else { |
| tbuilder.deferred().popMpls(EthType.EtherType.MPLS_UNICAST.ethType()) |
| .decMplsTtl(); |
| } |
| } else { |
| // swap with self case - SR CONTINUE |
| log.debug("getMplsForwardingObjective: php not required"); |
| tbuilder.deferred().decMplsTtl(); |
| } |
| |
| // All forwarding is via ECMP group, the metadata informs the driver |
| // that the next-Objective will be used by MPLS flows. In other words, |
| // MPLS ECMP is requested. It is up to the driver to decide if these |
| // packets will be hashed or not. |
| fwdBuilder.withTreatment(tbuilder.build()); |
| NeighborSet ns = new NeighborSet(nextHops); |
| log.debug("Trying to get a nextObjid for mpls rule on device:{} to ns:{}", |
| deviceId, ns); |
| |
| int nextId = srManager.getNextObjectiveId(deviceId, ns, meta); |
| if (nextId <= 0) { |
| log.warn("No next objective in {} for ns: {}", deviceId, ns); |
| return null; |
| } |
| |
| fwdBuilder.nextStep(nextId); |
| return fwdBuilder; |
| } |
| |
| /** |
| * Creates a filtering objective to permit all untagged packets with a |
| * dstMac corresponding to the router's MAC address. For those pipelines |
| * that need to internally assign vlans to untagged packets, this method |
| * provides per-subnet vlan-ids as metadata. |
| * <p> |
| * Note that the vlan assignment is only done by the master-instance for a switch. |
| * However we send the filtering objective from slave-instances as well, so |
| * that drivers can obtain other information (like Router MAC and IP). |
| * |
| * @param deviceId the switch dpid for the router |
| */ |
| public void populateRouterMacVlanFilters(DeviceId deviceId) { |
| log.debug("Installing per-port filtering objective for untagged " |
| + "packets in device {}", deviceId); |
| |
| MacAddress deviceMac; |
| try { |
| deviceMac = config.getDeviceMac(deviceId); |
| } catch (DeviceConfigNotFoundException e) { |
| log.warn(e.getMessage() + " Aborting populateRouterMacVlanFilters."); |
| return; |
| } |
| |
| for (Port port : srManager.deviceService.getPorts(deviceId)) { |
| ConnectPoint connectPoint = new ConnectPoint(deviceId, port.number()); |
| // TODO: Handles dynamic port events when we are ready for dynamic config |
| if (!srManager.deviceConfiguration.suppressSubnet().contains(connectPoint) && |
| port.isEnabled()) { |
| Ip4Prefix portSubnet = config.getPortSubnet(deviceId, port.number()); |
| VlanId assignedVlan = (portSubnet == null) |
| ? VlanId.vlanId(SegmentRoutingManager.ASSIGNED_VLAN_NO_SUBNET) |
| : srManager.getSubnetAssignedVlanId(deviceId, portSubnet); |
| |
| FilteringObjective.Builder fob = DefaultFilteringObjective.builder(); |
| fob.withKey(Criteria.matchInPort(port.number())) |
| .addCondition(Criteria.matchEthDst(deviceMac)) |
| .addCondition(Criteria.matchVlanId(VlanId.NONE)) |
| .withPriority(SegmentRoutingService.DEFAULT_PRIORITY); |
| // vlan assignment is valid only if this instance is master |
| if (srManager.mastershipService.isLocalMaster(deviceId)) { |
| TrafficTreatment tt = DefaultTrafficTreatment.builder() |
| .pushVlan().setVlanId(assignedVlan).build(); |
| fob.withMeta(tt); |
| } |
| fob.permit().fromApp(srManager.appId); |
| ObjectiveContext context = new DefaultObjectiveContext( |
| (objective) -> log.debug("Filter for {} populated", connectPoint), |
| (objective, error) -> |
| log.warn("Failed to populate filter for {}: {}", connectPoint, error)); |
| srManager.flowObjectiveService.filter(deviceId, fob.add(context)); |
| } |
| } |
| } |
| |
| /** |
| * Creates a forwarding objective to punt all IP packets, destined to the |
| * router's port IP addresses, to the controller. Note that the input |
| * port should not be matched on, as these packets can come from any input. |
| * Furthermore, these are applied only by the master instance. |
| * |
| * @param deviceId the switch dpid for the router |
| */ |
| public void populateRouterIpPunts(DeviceId deviceId) { |
| Ip4Address routerIp; |
| try { |
| routerIp = config.getRouterIp(deviceId); |
| } catch (DeviceConfigNotFoundException e) { |
| log.warn(e.getMessage() + " Aborting populateRouterIpPunts."); |
| return; |
| } |
| |
| if (!srManager.mastershipService.isLocalMaster(deviceId)) { |
| log.debug("Not installing port-IP punts - not the master for dev:{} ", |
| deviceId); |
| return; |
| } |
| ForwardingObjective.Builder puntIp = DefaultForwardingObjective.builder(); |
| Set<Ip4Address> allIps = new HashSet<>(config.getPortIPs(deviceId)); |
| allIps.add(routerIp); |
| for (Ip4Address ipaddr : allIps) { |
| TrafficSelector.Builder sbuilder = DefaultTrafficSelector.builder(); |
| TrafficTreatment.Builder tbuilder = DefaultTrafficTreatment.builder(); |
| sbuilder.matchEthType(Ethernet.TYPE_IPV4); |
| sbuilder.matchIPDst(IpPrefix.valueOf(ipaddr, |
| IpPrefix.MAX_INET_MASK_LENGTH)); |
| tbuilder.setOutput(PortNumber.CONTROLLER); |
| puntIp.withSelector(sbuilder.build()); |
| puntIp.withTreatment(tbuilder.build()); |
| puntIp.withFlag(Flag.VERSATILE) |
| .withPriority(SegmentRoutingService.HIGHEST_PRIORITY) |
| .makePermanent() |
| .fromApp(srManager.appId); |
| ObjectiveContext context = new DefaultObjectiveContext( |
| (objective) -> log.debug("IP punt rule for {} populated", ipaddr), |
| (objective, error) -> |
| log.warn("Failed to populate IP punt rule for {}: {}", ipaddr, error)); |
| srManager.flowObjectiveService.forward(deviceId, puntIp.add(context)); |
| } |
| } |
| |
| /** |
| * Populates a forwarding objective to send packets that miss other high |
| * priority Bridging Table entries to a group that contains all ports of |
| * its subnet. |
| * |
| * Note: We assume that packets sending from the edge switches to the hosts |
| * have untagged VLAN. |
| * The VLAN tag will be popped later in the flooding group. |
| * |
| * @param deviceId switch ID to set the rules |
| */ |
| public void populateSubnetBroadcastRule(DeviceId deviceId) { |
| config.getSubnets(deviceId).forEach(subnet -> { |
| if (subnet.prefixLength() == 0 || |
| subnet.prefixLength() == IpPrefix.MAX_INET_MASK_LENGTH) { |
| return; |
| } |
| int nextId = srManager.getSubnetNextObjectiveId(deviceId, subnet); |
| VlanId vlanId = srManager.getSubnetAssignedVlanId(deviceId, subnet); |
| |
| if (nextId < 0 || vlanId == null) { |
| log.error("Cannot install subnet {} broadcast rule in dev:{} due" |
| + "to vlanId:{} or nextId:{}", subnet, deviceId, vlanId, nextId); |
| return; |
| } |
| |
| /* Driver should treat objective with MacAddress.NONE as the |
| * subnet broadcast rule |
| */ |
| TrafficSelector.Builder sbuilder = DefaultTrafficSelector.builder(); |
| sbuilder.matchVlanId(vlanId); |
| sbuilder.matchEthDst(MacAddress.NONE); |
| |
| ForwardingObjective.Builder fob = DefaultForwardingObjective.builder(); |
| fob.withFlag(Flag.SPECIFIC) |
| .withSelector(sbuilder.build()) |
| .nextStep(nextId) |
| .withPriority(SegmentRoutingService.FLOOD_PRIORITY) |
| .fromApp(srManager.appId) |
| .makePermanent(); |
| ObjectiveContext context = new DefaultObjectiveContext( |
| (objective) -> log.debug("Subnet broadcast rule for {} populated", subnet), |
| (objective, error) -> |
| log.warn("Failed to populate subnet broadcast rule for {}: {}", subnet, error)); |
| srManager.flowObjectiveService.forward(deviceId, fob.add(context)); |
| }); |
| } |
| |
| /** |
| * Creates a filtering objective to permit VLAN cross-connect traffic. |
| * |
| * @param deviceId the DPID of the switch |
| */ |
| public void populateXConnectVlanFilters(DeviceId deviceId) { |
| Map<VlanId, List<ConnectPoint>> xConnectsForDevice = |
| config.getXConnects(); |
| xConnectsForDevice.forEach((vlanId, connectPoints) -> { |
| // Only proceed the xConnect for given device |
| for (ConnectPoint connectPoint : connectPoints) { |
| if (!connectPoint.deviceId().equals(deviceId)) { |
| return; |
| } |
| } |
| |
| connectPoints.forEach(connectPoint -> { |
| FilteringObjective.Builder fob = DefaultFilteringObjective.builder(); |
| fob.withKey(Criteria.matchInPort(connectPoint.port())) |
| .addCondition(Criteria.matchVlanId(vlanId)) |
| .addCondition(Criteria.matchEthDst(MacAddress.NONE)) |
| .withPriority(SegmentRoutingService.XCONNECT_PRIORITY); |
| fob.permit().fromApp(srManager.appId); |
| ObjectiveContext context = new DefaultObjectiveContext( |
| (objective) -> log.debug("XConnect filter for {} populated", connectPoint), |
| (objective, error) -> |
| log.warn("Failed to populate xconnect filter for {}: {}", connectPoint, error)); |
| srManager.flowObjectiveService.filter(deviceId, fob.add(context)); |
| }); |
| }); |
| } |
| |
| /** |
| * Populates a forwarding objective that points the VLAN cross-connect |
| * packets to a broadcast group. |
| * |
| * @param deviceId switch ID to set the rules |
| */ |
| public void populateXConnectBroadcastRule(DeviceId deviceId) { |
| Map<VlanId, List<ConnectPoint>> xConnects = |
| config.getXConnects(); |
| xConnects.forEach((vlanId, connectPoints) -> { |
| // Only proceed the xConnect for given device |
| for (ConnectPoint connectPoint : connectPoints) { |
| if (!connectPoint.deviceId().equals(deviceId)) { |
| return; |
| } |
| } |
| |
| int nextId = srManager.getXConnectNextObjectiveId(deviceId, vlanId); |
| if (nextId < 0) { |
| log.error("Cannot install cross-connect broadcast rule in dev:{} " + |
| "due to missing nextId:{}", deviceId, nextId); |
| return; |
| } |
| |
| /* |
| * Driver should treat objectives with MacAddress.NONE and !VlanId.NONE |
| * as the VLAN cross-connect broadcast rules |
| */ |
| TrafficSelector.Builder sbuilder = DefaultTrafficSelector.builder(); |
| sbuilder.matchVlanId(vlanId); |
| sbuilder.matchEthDst(MacAddress.NONE); |
| |
| ForwardingObjective.Builder fob = DefaultForwardingObjective.builder(); |
| fob.withFlag(Flag.SPECIFIC) |
| .withSelector(sbuilder.build()) |
| .nextStep(nextId) |
| .withPriority(SegmentRoutingService.DEFAULT_PRIORITY) |
| .fromApp(srManager.appId) |
| .makePermanent(); |
| ObjectiveContext context = new DefaultObjectiveContext( |
| (objective) -> log.debug("XConnect rule for {} populated", xConnects), |
| (objective, error) -> |
| log.warn("Failed to populate xconnect rule for {}: {}", xConnects, error)); |
| srManager.flowObjectiveService.forward(deviceId, fob.add(context)); |
| }); |
| } |
| |
| private int getPriorityFromPrefix(IpPrefix prefix) { |
| return (prefix.isIp4()) ? |
| 2000 * prefix.prefixLength() + SegmentRoutingService.MIN_IP_PRIORITY : |
| 500 * prefix.prefixLength() + SegmentRoutingService.MIN_IP_PRIORITY; |
| } |
| } |