| /* |
| * 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.segmentrouting; |
| |
| import com.google.common.collect.Lists; |
| import com.google.common.collect.Sets; |
| import org.apache.commons.lang3.tuple.ImmutablePair; |
| import org.onlab.packet.EthType; |
| import org.onlab.packet.Ethernet; |
| import org.onlab.packet.IPv6; |
| import org.onlab.packet.Ip4Address; |
| import org.onlab.packet.Ip6Address; |
| import org.onlab.packet.IpAddress; |
| 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.Device; |
| import org.onosproject.net.Host; |
| import org.onosproject.net.flowobjective.DefaultObjectiveContext; |
| import org.onosproject.net.flowobjective.Objective; |
| import org.onosproject.net.flowobjective.ObjectiveContext; |
| import org.onosproject.net.flowobjective.ObjectiveError; |
| import org.onosproject.net.intf.Interface; |
| import org.onosproject.net.packet.PacketPriority; |
| import org.onosproject.segmentrouting.config.DeviceConfigNotFoundException; |
| import org.onosproject.segmentrouting.config.DeviceConfiguration; |
| import org.onosproject.segmentrouting.grouphandler.DefaultGroupHandler; |
| import org.onosproject.segmentrouting.grouphandler.DestinationSet; |
| 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.Collection; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Optional; |
| import java.util.Set; |
| import java.util.concurrent.CompletableFuture; |
| import java.util.concurrent.atomic.AtomicLong; |
| import java.util.stream.Collectors; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| import static org.onlab.packet.Ethernet.TYPE_ARP; |
| import static org.onlab.packet.Ethernet.TYPE_IPV6; |
| import static org.onlab.packet.ICMP6.NEIGHBOR_ADVERTISEMENT; |
| import static org.onlab.packet.ICMP6.NEIGHBOR_SOLICITATION; |
| import static org.onlab.packet.ICMP6.ROUTER_ADVERTISEMENT; |
| import static org.onlab.packet.ICMP6.ROUTER_SOLICITATION; |
| import static org.onlab.packet.IPv6.PROTOCOL_ICMP6; |
| import static org.onosproject.segmentrouting.SegmentRoutingService.DEFAULT_PRIORITY; |
| |
| /** |
| * Populator of segment routing flow rules. |
| */ |
| public class RoutingRulePopulator { |
| private static final Logger log = LoggerFactory.getLogger(RoutingRulePopulator.class); |
| |
| private static final int ARP_NDP_PRIORITY = 30000; |
| |
| private AtomicLong rulePopulationCounter; |
| private SegmentRoutingManager srManager; |
| private DeviceConfiguration config; |
| private RouteSimplifierUtils routeSimplifierUtils; |
| |
| // used for signalling the driver to remove vlan table and tmac entry also |
| private static final long CLEANUP_DOUBLE_TAGGED_HOST_ENTRIES = 1; |
| private static final long DOUBLE_TAGGED_METADATA_MASK = 0xffffffffffffffffL; |
| |
| /** |
| * Creates a RoutingRulePopulator object. |
| * |
| * @param srManager segment routing manager reference |
| */ |
| RoutingRulePopulator(SegmentRoutingManager srManager) { |
| this.srManager = srManager; |
| this.config = checkNotNull(srManager.deviceConfiguration); |
| this.rulePopulationCounter = new AtomicLong(0); |
| this.routeSimplifierUtils = new RouteSimplifierUtils(srManager); |
| } |
| |
| /** |
| * Resets the population counter. |
| */ |
| void resetCounter() { |
| rulePopulationCounter.set(0); |
| } |
| |
| /** |
| * Returns the number of rules populated. |
| * |
| * @return number of rules |
| */ |
| long getCounter() { |
| return rulePopulationCounter.get(); |
| } |
| |
| /** |
| * Populate a bridging rule on given deviceId that matches given mac, given vlan and |
| * output to given port. |
| * |
| * @param deviceId device ID |
| * @param port port |
| * @param mac mac address |
| * @param vlanId VLAN ID |
| * @return future that carries the flow objective if succeeded, null if otherwise |
| */ |
| CompletableFuture<Objective> populateBridging(DeviceId deviceId, PortNumber port, MacAddress mac, VlanId vlanId) { |
| ForwardingObjective.Builder fob = bridgingFwdObjBuilder(deviceId, mac, vlanId, port, false); |
| if (fob == null) { |
| log.warn("Fail to build fwd obj for host {}/{}. Abort.", mac, vlanId); |
| return CompletableFuture.completedFuture(null); |
| } |
| |
| CompletableFuture<Objective> future = new CompletableFuture<>(); |
| ObjectiveContext context = new DefaultObjectiveContext( |
| (objective) -> { |
| log.debug("Brigding rule for {}/{} populated", mac, vlanId); |
| future.complete(objective); |
| }, |
| (objective, error) -> { |
| log.warn("Failed to populate bridging rule for {}/{}: {}", mac, vlanId, error); |
| future.complete(null); |
| }); |
| srManager.flowObjectiveService.forward(deviceId, fob.add(context)); |
| return future; |
| } |
| |
| /** |
| * Revoke a bridging rule on given deviceId that matches given mac, given vlan and |
| * output to given port. |
| * |
| * @param deviceId device ID |
| * @param port port |
| * @param mac mac address |
| * @param vlanId VLAN ID |
| * @return future that carries the flow objective if succeeded, null if otherwise |
| */ |
| CompletableFuture<Objective> revokeBridging(DeviceId deviceId, PortNumber port, MacAddress mac, VlanId vlanId) { |
| ForwardingObjective.Builder fob = bridgingFwdObjBuilder(deviceId, mac, vlanId, port, true); |
| if (fob == null) { |
| log.warn("Fail to build fwd obj for host {}/{}. Abort.", mac, vlanId); |
| return CompletableFuture.completedFuture(null); |
| } |
| |
| CompletableFuture<Objective> future = new CompletableFuture<>(); |
| ObjectiveContext context = new DefaultObjectiveContext( |
| (objective) -> { |
| log.debug("Brigding rule for {}/{} revoked", mac, vlanId); |
| future.complete(objective); |
| }, |
| (objective, error) -> { |
| log.warn("Failed to revoke bridging rule for {}/{}: {}", mac, vlanId, error); |
| future.complete(null); |
| }); |
| srManager.flowObjectiveService.forward(deviceId, fob.remove(context)); |
| return future; |
| } |
| |
| /** |
| * Generates a forwarding objective builder for bridging rules. |
| * <p> |
| * The forwarding objective bridges packets destined to a given MAC to |
| * given port on given device. |
| * |
| * @param deviceId Device that host attaches to |
| * @param mac MAC address of the host |
| * @param hostVlanId VLAN ID of the host |
| * @param outport Port that host attaches to |
| * @param revoke true if forwarding objective is meant to revoke forwarding rule |
| * @return Forwarding objective builder |
| */ |
| private ForwardingObjective.Builder bridgingFwdObjBuilder( |
| DeviceId deviceId, MacAddress mac, VlanId hostVlanId, PortNumber outport, boolean revoke) { |
| ConnectPoint connectPoint = new ConnectPoint(deviceId, outport); |
| VlanId untaggedVlan = srManager.interfaceService.getUntaggedVlanId(connectPoint); |
| Set<VlanId> taggedVlans = srManager.interfaceService.getTaggedVlanId(connectPoint); |
| VlanId nativeVlan = srManager.interfaceService.getNativeVlanId(connectPoint); |
| |
| // Create host selector |
| TrafficSelector.Builder sbuilder = DefaultTrafficSelector.builder(); |
| sbuilder.matchEthDst(mac); |
| |
| // Create host treatment |
| TrafficTreatment.Builder tbuilder = DefaultTrafficTreatment.builder(); |
| tbuilder.immediate().setOutput(outport); |
| |
| // Create host meta |
| TrafficSelector.Builder mbuilder = DefaultTrafficSelector.builder(); |
| |
| // Adjust the selector, treatment and meta according to VLAN configuration |
| if (taggedVlans.contains(hostVlanId)) { |
| sbuilder.matchVlanId(hostVlanId); |
| mbuilder.matchVlanId(hostVlanId); |
| } else if (hostVlanId.equals(VlanId.NONE)) { |
| if (untaggedVlan != null) { |
| sbuilder.matchVlanId(untaggedVlan); |
| mbuilder.matchVlanId(untaggedVlan); |
| tbuilder.immediate().popVlan(); |
| } else if (nativeVlan != null) { |
| sbuilder.matchVlanId(nativeVlan); |
| mbuilder.matchVlanId(nativeVlan); |
| tbuilder.immediate().popVlan(); |
| } else { |
| log.warn("Untagged host {}/{} is not allowed on {} without untagged or native" + |
| "vlan config", mac, hostVlanId, connectPoint); |
| return null; |
| } |
| } else { |
| log.warn("Tagged host {}/{} is not allowed on {} without VLAN listed in tagged vlan", |
| mac, hostVlanId, connectPoint); |
| return null; |
| } |
| |
| // All forwarding is via Groups. Drivers can re-purpose to flow-actions if needed. |
| // If the objective is to revoke an existing rule, and for some reason |
| // the next-objective does not exist, then a new one should not be created |
| int portNextObjId = srManager.getPortNextObjectiveId(deviceId, outport, |
| tbuilder.build(), mbuilder.build(), !revoke); |
| if (portNextObjId == -1) { |
| // Warning log will come from getPortNextObjective method |
| return null; |
| } |
| |
| return DefaultForwardingObjective.builder() |
| .withFlag(ForwardingObjective.Flag.SPECIFIC) |
| .withSelector(sbuilder.build()) |
| .nextStep(portNextObjId) |
| .withPriority(100) |
| .fromApp(srManager.appId) |
| .makePermanent(); |
| } |
| |
| /** |
| * Populate or revoke a bridging rule on given deviceId that matches given vlanId, |
| * and hostMAC connected to given port, and output to given port only when |
| * vlan information is valid. |
| * |
| * @param deviceId device ID that host attaches to |
| * @param portNum port number that host attaches to |
| * @param hostMac mac address of the host connected to the switch port |
| * @param vlanId Vlan ID configured on the switch port |
| * @param popVlan true to pop Vlan tag at TrafficTreatment, false otherwise |
| * @param install true to populate the objective, false to revoke |
| */ |
| // TODO Refactor. There are a lot of duplications between this method, populateBridging, |
| // revokeBridging and bridgingFwdObjBuilder. |
| void updateBridging(DeviceId deviceId, PortNumber portNum, MacAddress hostMac, |
| VlanId vlanId, boolean popVlan, boolean install) { |
| // Create host selector |
| TrafficSelector.Builder sbuilder = DefaultTrafficSelector.builder(); |
| sbuilder.matchEthDst(hostMac); |
| |
| // Create host meta |
| TrafficSelector.Builder mbuilder = DefaultTrafficSelector.builder(); |
| |
| sbuilder.matchVlanId(vlanId); |
| mbuilder.matchVlanId(vlanId); |
| |
| // Create host treatment |
| TrafficTreatment.Builder tbuilder = DefaultTrafficTreatment.builder(); |
| tbuilder.immediate().setOutput(portNum); |
| |
| if (popVlan) { |
| tbuilder.immediate().popVlan(); |
| } |
| |
| int portNextObjId = srManager.getPortNextObjectiveId(deviceId, portNum, |
| tbuilder.build(), mbuilder.build(), install); |
| if (portNextObjId != -1) { |
| ForwardingObjective.Builder fob = DefaultForwardingObjective.builder() |
| .withFlag(ForwardingObjective.Flag.SPECIFIC) |
| .withSelector(sbuilder.build()) |
| .nextStep(portNextObjId) |
| .withPriority(100) |
| .fromApp(srManager.appId) |
| .makePermanent(); |
| |
| ObjectiveContext context = new DefaultObjectiveContext( |
| (objective) -> log.debug("Brigding rule for {}/{} {}", hostMac, vlanId, |
| install ? "populated" : "revoked"), |
| (objective, error) -> log.warn("Failed to {} bridging rule for {}/{}: {}", |
| install ? "populate" : "revoke", hostMac, vlanId, error)); |
| srManager.flowObjectiveService.forward(deviceId, install ? fob.add(context) : fob.remove(context)); |
| } else { |
| log.warn("Failed to retrieve next objective for {}/{}", hostMac, vlanId); |
| } |
| } |
| |
| /** |
| * Populates IP rules for a route that has direct connection to the switch. |
| * This method should not be invoked directly without going through DefaultRoutingHandler. |
| * |
| * @param deviceId device ID of the device that next hop attaches to |
| * @param prefix IP prefix of the route |
| * @param hostMac MAC address of the next hop |
| * @param hostVlanId Vlan ID of the nexthop |
| * @param outPort port where the next hop attaches to |
| * @param directHost host is of type direct or indirect |
| * @return future that carries the flow objective if succeeded, null if otherwise |
| */ |
| CompletableFuture<Objective> populateRoute(DeviceId deviceId, IpPrefix prefix, |
| MacAddress hostMac, VlanId hostVlanId, PortNumber outPort, boolean directHost) { |
| log.debug("Populate direct routing entry for route {} at {}:{}", |
| prefix, deviceId, outPort); |
| ForwardingObjective.Builder fwdBuilder; |
| try { |
| fwdBuilder = routingFwdObjBuilder(deviceId, prefix, hostMac, |
| hostVlanId, outPort, null, null, directHost, false); |
| } catch (DeviceConfigNotFoundException e) { |
| log.warn(e.getMessage() + " Aborting direct populateRoute"); |
| return CompletableFuture.completedFuture(null); |
| } |
| if (fwdBuilder == null) { |
| log.warn("Aborting host routing table entry due " |
| + "to error for dev:{} route:{}", deviceId, prefix); |
| return CompletableFuture.completedFuture(null); |
| } |
| |
| int nextId = fwdBuilder.add().nextId(); |
| CompletableFuture<Objective> future = new CompletableFuture<>(); |
| ObjectiveContext context = new DefaultObjectiveContext( |
| (objective) -> { |
| log.debug("Direct routing rule for route {} populated. nextId={}", prefix, nextId); |
| future.complete(objective); |
| }, |
| (objective, error) -> { |
| log.warn("Failed to populate direct routing rule for route {}: {}", prefix, error); |
| future.complete(null); |
| }); |
| srManager.flowObjectiveService.forward(deviceId, fwdBuilder.add(context)); |
| rulePopulationCounter.incrementAndGet(); |
| return future; |
| } |
| |
| /** |
| * Removes IP rules for a route when the next hop is gone. |
| * This method should not be invoked directly without going through DefaultRoutingHandler. |
| * |
| * @param deviceId device ID of the device that next hop attaches to |
| * @param prefix IP prefix of the route |
| * @param hostMac MAC address of the next hop |
| * @param hostVlanId Vlan ID of the nexthop |
| * @param outPort port that next hop attaches to |
| * @param directHost host is of type direct or indirect |
| * @return future that carries the flow objective if succeeded, null if otherwise |
| */ |
| CompletableFuture<Objective> revokeRoute(DeviceId deviceId, IpPrefix prefix, |
| MacAddress hostMac, VlanId hostVlanId, PortNumber outPort, boolean directHost) { |
| log.debug("Revoke IP table entry for route {} at {}:{}", |
| prefix, deviceId, outPort); |
| ForwardingObjective.Builder fwdBuilder; |
| try { |
| fwdBuilder = routingFwdObjBuilder(deviceId, prefix, hostMac, |
| hostVlanId, outPort, null, null, directHost, true); |
| } catch (DeviceConfigNotFoundException e) { |
| log.warn(e.getMessage() + " Aborting revokeIpRuleForHost."); |
| return CompletableFuture.completedFuture(null); |
| } |
| if (fwdBuilder == null) { |
| log.warn("Aborting host routing table entries due " |
| + "to error for dev:{} route:{}", deviceId, prefix); |
| return CompletableFuture.completedFuture(null); |
| } |
| |
| CompletableFuture<Objective> future = new CompletableFuture<>(); |
| ObjectiveContext context = new DefaultObjectiveContext( |
| (objective) -> { |
| log.debug("IP rule for route {} revoked", prefix); |
| future.complete(objective); |
| }, |
| (objective, error) -> { |
| log.warn("Failed to revoke IP rule for route {}: {}", prefix, error); |
| future.complete(null); |
| }); |
| srManager.flowObjectiveService.forward(deviceId, fwdBuilder.remove(context)); |
| return future; |
| } |
| |
| /** |
| * Returns a forwarding objective builder for routing rules. |
| * <p> |
| * The forwarding objective routes packets destined to a given prefix to |
| * given port on given device with given destination MAC. |
| * |
| * @param deviceId device ID |
| * @param prefix prefix that need to be routed |
| * @param hostMac MAC address of the nexthop |
| * @param hostVlanId Vlan ID of the nexthop |
| * @param outPort port where the nexthop attaches to |
| * @param revoke true if forwarding objective is meant to revoke forwarding rule |
| * @param directHost host is direct or indirect |
| * @return forwarding objective builder |
| * @throws DeviceConfigNotFoundException if given device is not configured |
| */ |
| |
| private ForwardingObjective.Builder routingFwdObjBuilder( |
| DeviceId deviceId, IpPrefix prefix, |
| MacAddress hostMac, VlanId hostVlanId, PortNumber outPort, |
| VlanId innerVlan, EthType outerTpid, |
| boolean directHost, boolean revoke) |
| throws DeviceConfigNotFoundException { |
| int nextObjId; |
| if (directHost) { |
| // if the objective is to revoke an existing rule, and for some reason |
| // the next-objective does not exist, then a new one should not be created |
| ImmutablePair<TrafficTreatment, TrafficSelector> treatmentAndMeta = |
| getTreatmentAndMeta(deviceId, hostMac, hostVlanId, outPort, innerVlan, outerTpid); |
| if (treatmentAndMeta == null) { |
| // Warning log will come from getTreatmentAndMeta method |
| return null; |
| } |
| nextObjId = srManager.getPortNextObjectiveId(deviceId, outPort, |
| treatmentAndMeta.getLeft(), treatmentAndMeta.getRight(), !revoke); |
| } else { |
| // if the objective is to revoke an existing rule, and for some reason |
| // the next-objective does not exist, then a new one should not be created |
| nextObjId = srManager.getMacVlanNextObjectiveId(deviceId, hostMac, hostVlanId, |
| outPort, !revoke); |
| } |
| if (nextObjId == -1) { |
| // Warning log will come from getMacVlanNextObjective method |
| return null; |
| } |
| |
| return DefaultForwardingObjective.builder() |
| .withSelector(buildIpSelectorFromIpPrefix(prefix).build()) |
| .nextStep(nextObjId) |
| .fromApp(srManager.appId).makePermanent() |
| .withPriority(getPriorityFromPrefix(prefix)) |
| .withFlag(ForwardingObjective.Flag.SPECIFIC); |
| } |
| |
| private ImmutablePair<TrafficTreatment, TrafficSelector> getTreatmentAndMeta( |
| DeviceId deviceId, MacAddress hostMac, VlanId hostVlanId, PortNumber outPort, |
| VlanId innerVlan, EthType outerTpid) |
| throws DeviceConfigNotFoundException { |
| MacAddress routerMac; |
| routerMac = config.getDeviceMac(deviceId); |
| |
| ConnectPoint connectPoint = new ConnectPoint(deviceId, outPort); |
| VlanId untaggedVlan = srManager.interfaceService.getUntaggedVlanId(connectPoint); |
| Set<VlanId> taggedVlans = srManager.interfaceService.getTaggedVlanId(connectPoint); |
| VlanId nativeVlan = srManager.interfaceService.getNativeVlanId(connectPoint); |
| |
| // Create route treatment |
| TrafficTreatment.Builder tbuilder = DefaultTrafficTreatment.builder(); |
| tbuilder.deferred() |
| .setEthDst(hostMac) |
| .setEthSrc(routerMac) |
| .setOutput(outPort); |
| |
| // Create route meta |
| TrafficSelector.Builder mbuilder = DefaultTrafficSelector.builder(); |
| |
| // Adjust treatment and meta according to VLAN configuration |
| if (taggedVlans.contains(hostVlanId)) { |
| tbuilder.setVlanId(hostVlanId); |
| } else if (hostVlanId.equals(VlanId.NONE)) { |
| if (untaggedVlan != null) { |
| mbuilder.matchVlanId(untaggedVlan); |
| } else if (nativeVlan != null) { |
| mbuilder.matchVlanId(nativeVlan); |
| } else { |
| log.warn("Untagged nexthop {}/{} is not allowed on {} without untagged or native vlan", |
| hostMac, hostVlanId, connectPoint); |
| return null; |
| } |
| } else { |
| // Double tagged hosts |
| if (innerVlan == null || outerTpid == null) { |
| log.warn("Failed to construct NextObj for double tagged hosts {}/{}. {} {}", |
| hostMac, hostVlanId, |
| (innerVlan == null) ? "innerVlan = null." : "", |
| (outerTpid == null) ? "outerTpid = null." : ""); |
| return null; |
| } |
| tbuilder.setVlanId(innerVlan); |
| tbuilder.pushVlan(outerTpid); |
| tbuilder.setVlanId(hostVlanId); |
| mbuilder.matchVlanId(VlanId.ANY); |
| } |
| |
| return ImmutablePair.of(tbuilder.build(), mbuilder.build()); |
| } |
| |
| /** |
| * Populates IP flow rules for all the given prefixes reachable from the |
| * destination switch(es). |
| * |
| * @param targetSw switch where rules are to be programmed |
| * @param subnets subnets/prefixes being added |
| * @param destSw1 destination switch where the prefixes are reachable |
| * @param destSw2 paired destination switch if one exists for the subnets/prefixes. |
| * Should be null if there is no paired destination switch (by config) |
| * or if the given prefixes are reachable only via destSw1 |
| * @param nextHops a map containing a set of next-hops for each destination switch. |
| * If destSw2 is not null, then this map must contain an |
| * entry for destSw2 with its next-hops from the targetSw |
| * (although the next-hop set may be empty in certain scenarios). |
| * If destSw2 is null, there should not be an entry in this |
| * map for destSw2. |
| * @return true if all rules are set successfully, false otherwise |
| */ |
| boolean populateIpRuleForSubnet(DeviceId targetSw, Set<IpPrefix> subnets, |
| DeviceId destSw1, DeviceId destSw2, Map<DeviceId, Set<DeviceId>> nextHops) { |
| // Get pair device of the target switch |
| Optional<DeviceId> pairDev = srManager.getPairDeviceId(targetSw); |
| // Route simplification will be off in case of the nexthop location at target switch is down |
| // (routing through spine case) |
| boolean routeSimplOff = pairDev.isPresent() && pairDev.get().equals(destSw1) && destSw2 == null; |
| // Iterates over the routes. Checking: |
| // If route simplification is enabled |
| // If the target device is another leaf in the network |
| if (srManager.routeSimplification && !routeSimplOff) { |
| Set<IpPrefix> subnetsToBePopulated = Sets.newHashSet(); |
| for (IpPrefix subnet : subnets) { |
| // Skip route programming on the target device |
| // If route simplification applies |
| if (routeSimplifierUtils.hasLeafExclusionEnabledForPrefix(subnet)) { |
| // XXX route simplification assumes that source of the traffic |
| // towards the nexthops are co-located with the nexthops. In different |
| // scenarios will not work properly. |
| continue; |
| } |
| // populate the route in the remaning scenarios |
| subnetsToBePopulated.add(subnet); |
| } |
| subnets = subnetsToBePopulated; |
| } |
| // populate the remaining routes in the target switch |
| return populateIpRulesForRouter(targetSw, subnets, destSw1, destSw2, nextHops); |
| } |
| |
| /** |
| * Revokes IP flow rules for the subnets from given device. |
| * |
| * @param targetSw target switch from which the subnets need to be removed |
| * @param subnets subnet being removed |
| * @return true if all rules are removed successfully, false otherwise |
| */ |
| boolean revokeIpRuleForSubnet(DeviceId targetSw, Set<IpPrefix> subnets) { |
| for (IpPrefix subnet : subnets) { |
| if (!revokeIpRuleForRouter(targetSw, subnet)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| /** |
| * Populates IP flow rules for a set of IP prefix in the target device. |
| * The prefix are reachable via destination device(s). |
| * |
| * @param targetSw target device ID to set the rules |
| * @param subnets the set of IP prefix |
| * @param destSw1 destination switch where the prefixes are reachable |
| * @param destSw2 paired destination switch if one exists for the subnets/prefixes. |
| * Should be null if there is no paired destination switch (by config) |
| * or if the given prefixes are reachable only via destSw1 |
| * @param nextHops map of destination switches and their next-hops. |
| * Should only contain destination switches that are |
| * actually meant to be routed to. If destSw2 is null, there |
| * should not be an entry for destSw2 in this map. |
| * @return true if all rules are set successfully, false otherwise |
| */ |
| private boolean populateIpRulesForRouter(DeviceId targetSw, |
| Set<IpPrefix> subnets, |
| DeviceId destSw1, DeviceId destSw2, |
| Map<DeviceId, Set<DeviceId>> nextHops) { |
| // pre-compute the needed information |
| int segmentIdIPv41, segmentIdIPv42 = -1; |
| int segmentIdIPv61, segmentIdIPv62 = -1; |
| TrafficTreatment treatment = null; |
| DestinationSet dsIPv4, dsIPv6; |
| TrafficSelector metaIpv4Selector, metaIpv6Selector = null; |
| int nextIdIPv4, nextIdIPv6, nextId; |
| TrafficSelector selector; |
| // start with MPLS SIDs |
| try { |
| segmentIdIPv41 = config.getIPv4SegmentId(destSw1); |
| segmentIdIPv61 = config.getIPv6SegmentId(destSw1); |
| if (destSw2 != null) { |
| segmentIdIPv42 = config.getIPv4SegmentId(destSw2); |
| segmentIdIPv62 = config.getIPv6SegmentId(destSw2); |
| } |
| } catch (DeviceConfigNotFoundException e) { |
| log.warn(e.getMessage() + " Aborting populateIpRuleForRouter."); |
| return false; |
| } |
| // build the IPv4 and IPv6 destination set |
| if (destSw2 == null) { |
| // single dst - create destination set based on next-hop |
| // If the next hop is the same as the final destination, then MPLS |
| // label is not set. |
| Set<DeviceId> nhd1 = nextHops.get(destSw1); |
| if (nhd1.size() == 1 && nhd1.iterator().next().equals(destSw1)) { |
| dsIPv4 = DestinationSet.createTypePushNone(destSw1); |
| dsIPv6 = DestinationSet.createTypePushNone(destSw1); |
| treatment = DefaultTrafficTreatment.builder() |
| .immediate() |
| .decNwTtl() |
| .build(); |
| } else { |
| dsIPv4 = DestinationSet.createTypePushBos(segmentIdIPv41, destSw1); |
| dsIPv6 = DestinationSet.createTypePushBos(segmentIdIPv61, destSw1); |
| } |
| } else { |
| // dst pair - IP rules for dst-pairs are always from other edge nodes |
| // the destination set needs to have both destinations, even if there |
| // are no next hops to one of them |
| dsIPv4 = DestinationSet.createTypePushBos(segmentIdIPv41, destSw1, segmentIdIPv42, destSw2); |
| dsIPv6 = DestinationSet.createTypePushBos(segmentIdIPv61, destSw1, segmentIdIPv62, destSw2); |
| } |
| |
| // 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. |
| metaIpv4Selector = buildIpv4Selector() |
| .matchVlanId(srManager.getDefaultInternalVlan()) |
| .build(); |
| metaIpv6Selector = buildIpv6Selector() |
| .matchVlanId(srManager.getDefaultInternalVlan()) |
| .build(); |
| // get the group handler of the target switch |
| DefaultGroupHandler grpHandler = srManager.getGroupHandler(targetSw); |
| if (grpHandler == null) { |
| log.warn("populateIPRuleForRouter: groupHandler for device {} " |
| + "not found", targetSw); |
| return false; |
| } |
| // get next id |
| nextIdIPv4 = grpHandler.getNextObjectiveId(dsIPv4, nextHops, metaIpv4Selector, false); |
| if (nextIdIPv4 <= 0) { |
| log.warn("No next objective in {} for ds: {}", targetSw, dsIPv4); |
| return false; |
| } |
| nextIdIPv6 = grpHandler.getNextObjectiveId(dsIPv6, nextHops, metaIpv6Selector, false); |
| if (nextIdIPv6 <= 0) { |
| log.warn("No next objective in {} for ds: {}", targetSw, dsIPv6); |
| return false; |
| } |
| // build all the flow rules and send to the device |
| for (IpPrefix subnet : subnets) { |
| selector = buildIpSelectorFromIpPrefix(subnet).build(); |
| if (subnet.isIp4()) { |
| nextId = nextIdIPv4; |
| } else { |
| nextId = nextIdIPv6; |
| } |
| ForwardingObjective.Builder fwdBuilder = DefaultForwardingObjective |
| .builder() |
| .fromApp(srManager.appId) |
| .makePermanent() |
| .nextStep(nextId) |
| .withSelector(selector) |
| .withPriority(getPriorityFromPrefix(subnet)) |
| .withFlag(ForwardingObjective.Flag.SPECIFIC); |
| if (treatment != null) { |
| fwdBuilder.withTreatment(treatment); |
| } |
| log.debug("Installing {} forwarding objective for router IP/subnet {} " |
| + "in switch {} with nextId: {}", subnet.isIp4() ? "IPv4" : "IPv6", |
| subnet, targetSw, nextId); |
| ObjectiveContext context = new DefaultObjectiveContext( |
| (objective) -> log.debug("IP rule for router {} populated in dev:{}", |
| subnet, targetSw), |
| (objective, error) -> log.warn("Failed to populate IP rule for router {}: {} in dev:{}", |
| subnet, error, targetSw)); |
| srManager.flowObjectiveService.forward(targetSw, fwdBuilder.add(context)); |
| } |
| rulePopulationCounter.addAndGet(subnets.size()); |
| return true; |
| } |
| |
| /** |
| * Revokes IP flow rules for the router IP address from given device. |
| * |
| * @param targetSw target switch from which the ipPrefix need to be removed |
| * @param ipPrefix the IP address of the destination router |
| * @return true if all rules are removed successfully, false otherwise |
| */ |
| private boolean revokeIpRuleForRouter(DeviceId targetSw, IpPrefix ipPrefix) { |
| TrafficSelector.Builder sbuilder = buildIpSelectorFromIpPrefix(ipPrefix); |
| TrafficSelector selector = sbuilder.build(); |
| TrafficTreatment dummyTreatment = DefaultTrafficTreatment.builder().build(); |
| |
| ForwardingObjective.Builder fwdBuilder = DefaultForwardingObjective |
| .builder() |
| .fromApp(srManager.appId) |
| .makePermanent() |
| .withSelector(selector) |
| .withTreatment(dummyTreatment) |
| .withPriority(getPriorityFromPrefix(ipPrefix)) |
| .withFlag(ForwardingObjective.Flag.SPECIFIC); |
| |
| ObjectiveContext context = new DefaultObjectiveContext( |
| (objective) -> log.debug("IP rule for router {} revoked from {}", ipPrefix, targetSw), |
| (objective, error) -> log.warn("Failed to revoke IP rule for router {} from {}: {}", |
| ipPrefix, targetSw, error)); |
| srManager.flowObjectiveService.forward(targetSw, fwdBuilder.remove(context)); |
| |
| return true; |
| } |
| |
| /** |
| * Populates MPLS flow rules in the target device to point towards the |
| * destination device. |
| * |
| * @param targetSwId target device ID of the switch to set the rules |
| * @param destSwId destination switch device ID |
| * @param nextHops next hops switch ID list |
| * @param routerIp the router ip of the destination switch |
| * @return true if all rules are set successfully, false otherwise |
| */ |
| boolean populateMplsRule(DeviceId targetSwId, DeviceId destSwId, |
| Set<DeviceId> nextHops, IpAddress routerIp) { |
| int segmentId; |
| try { |
| if (routerIp.isIp4()) { |
| segmentId = config.getIPv4SegmentId(destSwId); |
| } else { |
| segmentId = config.getIPv6SegmentId(destSwId); |
| } |
| } catch (DeviceConfigNotFoundException e) { |
| log.warn(e.getMessage() + " Aborting populateMplsRule."); |
| return false; |
| } |
| |
| List<ForwardingObjective> fwdObjs = new ArrayList<>(); |
| Collection<ForwardingObjective> fwdObjsMpls; |
| // Generates the transit rules used by the standard "routing". |
| fwdObjsMpls = handleMpls(targetSwId, destSwId, nextHops, segmentId, |
| routerIp, true); |
| if (fwdObjsMpls.isEmpty()) { |
| return false; |
| } |
| fwdObjs.addAll(fwdObjsMpls); |
| |
| // Generates the transit rules used by the MPLS Pwaas. |
| int pwSrLabel; |
| try { |
| pwSrLabel = config.getPWRoutingLabel(destSwId); |
| } catch (DeviceConfigNotFoundException e) { |
| log.warn(e.getMessage() |
| + " Aborting populateMplsRule. No label for PseudoWire traffic."); |
| return false; |
| } |
| fwdObjsMpls = handleMpls(targetSwId, destSwId, nextHops, pwSrLabel, |
| routerIp, false); |
| if (fwdObjsMpls.isEmpty()) { |
| return false; |
| } |
| fwdObjs.addAll(fwdObjsMpls); |
| |
| for (ForwardingObjective fwdObj : fwdObjs) { |
| log.debug("Sending MPLS fwd obj {} for SID {}-> next {} in sw: {}", |
| fwdObj.id(), segmentId, fwdObj.nextId(), targetSwId); |
| srManager.flowObjectiveService.forward(targetSwId, fwdObj); |
| rulePopulationCounter.incrementAndGet(); |
| } |
| |
| return true; |
| } |
| |
| /** |
| * Differentiates between popping and swapping labels when building an MPLS |
| * forwarding objective. |
| * |
| * @param targetSwId the target sw |
| * @param destSwId the destination sw |
| * @param nextHops the set of next hops |
| * @param segmentId the segmentId to match representing the destination |
| * switch |
| * @param routerIp the router ip representing the destination switch |
| * @return a collection of fwdobjective |
| */ |
| private Collection<ForwardingObjective> handleMpls( |
| DeviceId targetSwId, |
| DeviceId destSwId, |
| Set<DeviceId> nextHops, |
| int segmentId, |
| IpAddress routerIp, |
| boolean isMplsBos) { |
| |
| TrafficSelector.Builder sbuilder = DefaultTrafficSelector.builder(); |
| List<ForwardingObjective.Builder> fwdObjBuilders = Lists.newArrayList(); |
| // For the transport of Pwaas we can use two or three MPLS label |
| sbuilder.matchEthType(Ethernet.MPLS_UNICAST); |
| sbuilder.matchMplsLabel(MplsLabel.mplsLabel(segmentId)); |
| sbuilder.matchMplsBos(isMplsBos); |
| 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(srManager.getDefaultInternalVlan()); |
| |
| if (nextHops.size() == 1 && destSwId.equals(nextHops.toArray()[0])) { |
| // If the next hop is the destination router for the segment, do pop |
| log.debug("populateMplsRule: Installing MPLS forwarding objective for " |
| + "label {} in switch {} with pop to next-hops {}", |
| segmentId, targetSwId, nextHops); |
| ForwardingObjective.Builder fwdObjNoBosBuilder = |
| getMplsForwardingObjective(targetSwId, |
| nextHops, |
| true, |
| isMplsBos, |
| metabuilder.build(), |
| routerIp, |
| segmentId, |
| destSwId); |
| // Error case, we cannot handle, exit. |
| if (fwdObjNoBosBuilder == null) { |
| return Collections.emptyList(); |
| } |
| fwdObjBuilders.add(fwdObjNoBosBuilder); |
| |
| } else { |
| // next hop is not destination, irrespective of the number of next |
| // hops (1 or more) -- SR CONTINUE case (swap with self) |
| log.debug("Installing MPLS forwarding objective for " |
| + "label {} in switch {} without pop to next-hops {}", |
| segmentId, targetSwId, nextHops); |
| ForwardingObjective.Builder fwdObjNoBosBuilder = |
| getMplsForwardingObjective(targetSwId, |
| nextHops, |
| false, |
| isMplsBos, |
| metabuilder.build(), |
| routerIp, |
| segmentId, |
| destSwId); |
| // Error case, we cannot handle, exit. |
| if (fwdObjNoBosBuilder == null) { |
| return Collections.emptyList(); |
| } |
| fwdObjBuilders.add(fwdObjNoBosBuilder); |
| |
| } |
| |
| List<ForwardingObjective> fwdObjs = Lists.newArrayList(); |
| // We add the final property to the fwdObjs. |
| 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 in dev:{} ", |
| objective.id(), segmentId, targetSwId), |
| (objective, error) -> |
| log.warn("Failed to populate MPLS rule {} for SID {}: {} in dev:{}", |
| objective.id(), segmentId, error, targetSwId)); |
| |
| ForwardingObjective fob = fwdObjBuilder.add(context); |
| fwdObjs.add(fob); |
| } |
| |
| return fwdObjs; |
| } |
| |
| /** |
| * Returns a Forwarding Objective builder for the MPLS rule that references |
| * the desired Next Objective. Creates a DestinationSet that allows the |
| * groupHandler to create or find the required next objective. |
| * |
| * @param targetSw the target sw |
| * @param nextHops the set of next hops |
| * @param phpRequired true if penultimate-hop-popping is required |
| * @param isBos true if matched label is bottom-of-stack |
| * @param meta metadata for creating next objective |
| * @param routerIp the router ip representing the destination switch |
| * @param destSw the destination sw |
| * @return the mpls forwarding objective builder |
| */ |
| private ForwardingObjective.Builder getMplsForwardingObjective( |
| DeviceId targetSw, |
| Set<DeviceId> nextHops, |
| boolean phpRequired, |
| boolean isBos, |
| TrafficSelector meta, |
| IpAddress routerIp, |
| int segmentId, |
| DeviceId destSw) { |
| |
| ForwardingObjective.Builder fwdBuilder = DefaultForwardingObjective |
| .builder().withFlag(ForwardingObjective.Flag.SPECIFIC); |
| |
| TrafficTreatment.Builder tbuilder = DefaultTrafficTreatment.builder(); |
| DestinationSet ds = null; |
| DestinationSet.DestinationSetType dstType = null; |
| boolean simple = false; |
| if (phpRequired) { |
| // php case - pop should always be flow-action |
| log.debug("getMplsForwardingObjective: php required"); |
| tbuilder.deferred().copyTtlIn(); |
| if (isBos) { |
| if (routerIp.isIp4()) { |
| tbuilder.deferred().popMpls(EthType.EtherType.IPV4.ethType()); |
| } else { |
| tbuilder.deferred().popMpls(EthType.EtherType.IPV6.ethType()); |
| } |
| tbuilder.decNwTtl(); |
| // standard case -> BoS == True; pop results in IP packet and forwarding |
| // is via an ECMP group |
| ds = DestinationSet.createTypePopBos(destSw); |
| } else { |
| tbuilder.deferred().popMpls(EthType.EtherType.MPLS_UNICAST.ethType()) |
| .decMplsTtl(); |
| // double-label case -> BoS == False, pop results in MPLS packet |
| // depending on configuration we can ECMP this packet or choose one output |
| ds = DestinationSet.createTypePopNotBos(destSw); |
| if (!srManager.getMplsEcmp()) { |
| simple = true; |
| } |
| } |
| } else { |
| // swap with self case - SR CONTINUE |
| log.debug("getMplsForwardingObjective: swap with self"); |
| tbuilder.deferred().decMplsTtl(); |
| // swap results in MPLS packet with same BoS bit regardless of bit value |
| // depending on configuration we can ECMP this packet or choose one output |
| // differentiate here between swap with not bos or swap with bos |
| ds = isBos ? DestinationSet.createTypeSwapBos(segmentId, destSw) : |
| DestinationSet.createTypeSwapNotBos(segmentId, destSw); |
| if (!srManager.getMplsEcmp()) { |
| simple = true; |
| } |
| } |
| |
| fwdBuilder.withTreatment(tbuilder.build()); |
| log.debug("Trying to get a nextObjId for mpls rule on device:{} to ds:{}", |
| targetSw, ds); |
| DefaultGroupHandler gh = srManager.getGroupHandler(targetSw); |
| if (gh == null) { |
| log.warn("getNextObjectiveId query - groupHandler for device {} " |
| + "not found", targetSw); |
| return null; |
| } |
| |
| Map<DeviceId, Set<DeviceId>> dstNextHops = new HashMap<>(); |
| dstNextHops.put(destSw, nextHops); |
| int nextId = gh.getNextObjectiveId(ds, dstNextHops, meta, simple); |
| if (nextId <= 0) { |
| log.warn("No next objective in {} for ds: {}", targetSw, ds); |
| return null; |
| } else { |
| log.debug("nextObjId found:{} for mpls rule on device:{} to ds:{}", |
| nextId, targetSw, ds); |
| } |
| |
| 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 and filter programming should only be done by |
| * the master for a switch. This method is typically called at deviceAdd and |
| * programs filters only for the enabled ports of the device. For port-updates, |
| * that enable/disable ports after device add, singlePortFilter methods should |
| * be called. |
| * |
| * @param deviceId the switch dpid for the router |
| * @return PortFilterInfo information about the processed ports |
| */ |
| PortFilterInfo populateVlanMacFilters(DeviceId deviceId) { |
| log.debug("Installing per-port filtering objective for untagged " |
| + "packets in device {}", deviceId); |
| |
| List<Port> devPorts = srManager.deviceService.getPorts(deviceId); |
| if (devPorts == null || devPorts.isEmpty()) { |
| log.warn("Device {} ports not available. Unable to add MacVlan filters", |
| deviceId); |
| return null; |
| } |
| int disabledPorts = 0, errorPorts = 0, filteredPorts = 0; |
| for (Port port : devPorts) { |
| if (!port.isEnabled()) { |
| disabledPorts++; |
| continue; |
| } |
| if (processSinglePortFilters(deviceId, port.number(), true)) { |
| filteredPorts++; |
| } else { |
| errorPorts++; |
| } |
| } |
| log.debug("Filtering on dev:{}, disabledPorts:{}, errorPorts:{}, filteredPorts:{}", |
| deviceId, disabledPorts, errorPorts, filteredPorts); |
| return new PortFilterInfo(disabledPorts, errorPorts, filteredPorts); |
| } |
| |
| /** |
| * Creates or removes filtering objectives for a single port. Should only be |
| * called by the master for a switch. |
| * |
| * @param deviceId device identifier |
| * @param portnum port identifier for port to be filtered |
| * @param install true to install the filtering objective, false to remove |
| * @return true if no errors occurred during the build of the filtering objective |
| */ |
| boolean processSinglePortFilters(DeviceId deviceId, PortNumber portnum, boolean install) { |
| ConnectPoint connectPoint = new ConnectPoint(deviceId, portnum); |
| VlanId untaggedVlan = srManager.interfaceService.getUntaggedVlanId(connectPoint); |
| Set<VlanId> taggedVlans = srManager.interfaceService.getTaggedVlanId(connectPoint); |
| VlanId nativeVlan = srManager.interfaceService.getNativeVlanId(connectPoint); |
| |
| // Do not configure filter for edge ports where double-tagged hosts are connected. |
| if (taggedVlans.size() != 0) { |
| // Filter for tagged vlans |
| if (!srManager.interfaceService.getTaggedVlanId(connectPoint).stream().allMatch(taggedVlanId -> |
| processSinglePortFiltersInternal(deviceId, portnum, false, taggedVlanId, install))) { |
| return false; |
| } |
| if (nativeVlan != null) { |
| // Filter for native vlan |
| if (!processSinglePortFiltersInternal(deviceId, portnum, true, nativeVlan, install)) { |
| return false; |
| } |
| } |
| } else if (untaggedVlan != null) { |
| // Filter for untagged vlan |
| if (!processSinglePortFiltersInternal(deviceId, portnum, true, untaggedVlan, install)) { |
| return false; |
| } |
| } else if (!hasIPConfiguration(connectPoint)) { |
| // Filter for unconfigured upstream port, using INTERNAL_VLAN |
| if (!processSinglePortFiltersInternal(deviceId, portnum, true, |
| srManager.getDefaultInternalVlan(), |
| install)) { |
| return false; |
| } |
| // Filter for receiveing pseudowire traffic |
| if (!processSinglePortFiltersInternal(deviceId, portnum, false, |
| srManager.getPwTransportVlan(), |
| install)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| /** |
| * Updates filtering objectives for a single port. Should only be called by |
| * the master for a switch |
| * @param deviceId device identifier |
| * @param portNum port identifier for port to be filtered |
| * @param pushVlan true to push vlan, false otherwise |
| * @param vlanId vlan identifier |
| * @param install true to install the filtering objective, false to remove |
| */ |
| void updateSinglePortFilters(DeviceId deviceId, PortNumber portNum, |
| boolean pushVlan, VlanId vlanId, boolean install) { |
| if (!processSinglePortFiltersInternal(deviceId, portNum, pushVlan, vlanId, install)) { |
| log.warn("Failed to update FilteringObjective for {}/{} with vlan {}", |
| deviceId, portNum, vlanId); |
| } |
| } |
| |
| private boolean processSinglePortFiltersInternal(DeviceId deviceId, PortNumber portnum, |
| boolean pushVlan, VlanId vlanId, boolean install) { |
| boolean doTMAC = true; |
| |
| if (!pushVlan) { |
| // Skip the tagged vlans belonging to an interface without an IP address |
| Set<Interface> ifaces = srManager.interfaceService |
| .getInterfacesByPort(new ConnectPoint(deviceId, portnum)) |
| .stream() |
| .filter(intf -> intf.vlanTagged().contains(vlanId) && intf.ipAddressesList().isEmpty()) |
| .collect(Collectors.toSet()); |
| if (!ifaces.isEmpty()) { |
| log.debug("processSinglePortFiltersInternal: skipping TMAC for vlan {} at {}/{} - no IP", |
| vlanId, deviceId, portnum); |
| doTMAC = false; |
| } |
| } |
| |
| FilteringObjective.Builder fob = buildFilteringObjective(deviceId, portnum, pushVlan, vlanId, doTMAC); |
| if (fob == null) { |
| // error encountered during build |
| return false; |
| } |
| log.debug("{} filtering objectives for dev/port: {}/{}", |
| install ? "Installing" : "Removing", deviceId, portnum); |
| ObjectiveContext context = new DefaultObjectiveContext( |
| (objective) -> log.debug("Filter for {}/{} {}", deviceId, portnum, |
| install ? "installed" : "removed"), |
| (objective, error) -> log.warn("Failed to {} filter for {}/{}: {}", |
| install ? "install" : "remove", deviceId, portnum, error)); |
| if (install) { |
| srManager.flowObjectiveService.filter(deviceId, fob.add(context)); |
| } else { |
| srManager.flowObjectiveService.filter(deviceId, fob.remove(context)); |
| } |
| return true; |
| } |
| |
| private FilteringObjective.Builder buildFilteringObjective(DeviceId deviceId, PortNumber portnum, |
| boolean pushVlan, VlanId vlanId, boolean doTMAC) { |
| MacAddress deviceMac; |
| try { |
| deviceMac = config.getDeviceMac(deviceId); |
| } catch (DeviceConfigNotFoundException e) { |
| log.warn(e.getMessage() + " Processing SinglePortFilters aborted"); |
| return null; |
| } |
| FilteringObjective.Builder fob = DefaultFilteringObjective.builder(); |
| |
| if (doTMAC) { |
| fob.withKey(Criteria.matchInPort(portnum)) |
| .addCondition(Criteria.matchEthDst(deviceMac)) |
| .withPriority(SegmentRoutingService.DEFAULT_PRIORITY); |
| } else { |
| fob.withKey(Criteria.matchInPort(portnum)) |
| .withPriority(SegmentRoutingService.DEFAULT_PRIORITY); |
| } |
| |
| TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder(); |
| |
| if (pushVlan) { |
| fob.addCondition(Criteria.matchVlanId(VlanId.NONE)); |
| tBuilder.pushVlan().setVlanId(vlanId); |
| } else { |
| fob.addCondition(Criteria.matchVlanId(vlanId)); |
| } |
| |
| // NOTE: Some switch hardware share the same filtering flow among different ports. |
| // We use this metadata to let the driver know that there is no more enabled port |
| // within the same VLAN on this device. |
| if (noMoreEnabledPort(deviceId, vlanId)) { |
| tBuilder.wipeDeferred(); |
| } |
| |
| fob.withMeta(tBuilder.build()); |
| |
| fob.permit().fromApp(srManager.appId); |
| return fob; |
| } |
| |
| /** |
| * Creates or removes filtering objectives for a double-tagged host on a port. |
| * |
| * @param deviceId device identifier |
| * @param portNum port identifier for port to be filtered |
| * @param outerVlan outer VLAN ID |
| * @param innerVlan inner VLAN ID |
| * @param install true to install the filtering objective, false to remove |
| */ |
| void processDoubleTaggedFilter(DeviceId deviceId, PortNumber portNum, VlanId outerVlan, |
| VlanId innerVlan, boolean install) { |
| // We should trigger the removal of double tagged rules only when removing |
| // the filtering objective and no other hosts are connected to the same device port. |
| boolean cleanupDoubleTaggedRules = !anyDoubleTaggedHost(deviceId, portNum) && !install; |
| FilteringObjective.Builder fob = buildDoubleTaggedFilteringObj(deviceId, portNum, |
| outerVlan, innerVlan, |
| cleanupDoubleTaggedRules); |
| if (fob == null) { |
| // error encountered during build |
| return; |
| } |
| log.debug("{} double-tagged filtering objectives for dev/port: {}/{}", |
| install ? "Installing" : "Removing", deviceId, portNum); |
| ObjectiveContext context = new DefaultObjectiveContext( |
| (objective) -> log.debug("Filter for {}/{} {}", deviceId, portNum, |
| install ? "installed" : "removed"), |
| (objective, error) -> log.warn("Failed to {} filter for {}/{}: {}", |
| install ? "install" : "remove", deviceId, portNum, error)); |
| if (install) { |
| srManager.flowObjectiveService.filter(deviceId, fob.add(context)); |
| } else { |
| srManager.flowObjectiveService.filter(deviceId, fob.remove(context)); |
| } |
| } |
| |
| /** |
| * Checks if there is any double tagged host attached to given location. |
| * This method will match on the effective location of a host. |
| * That is, it will match on auxLocations when auxLocations is not null. Otherwise, it will match on locations. |
| * |
| * @param deviceId device ID |
| * @param portNum port number |
| * @return true if there is any host attached to given location. |
| */ |
| private boolean anyDoubleTaggedHost(DeviceId deviceId, PortNumber portNum) { |
| ConnectPoint cp = new ConnectPoint(deviceId, portNum); |
| Set<Host> connectedHosts = srManager.hostService.getConnectedHosts(cp, false); |
| Set<Host> auxConnectedHosts = srManager.hostService.getConnectedHosts(cp, true); |
| return !auxConnectedHosts.isEmpty() || |
| connectedHosts.stream().anyMatch(host -> host.auxLocations() == null); |
| } |
| |
| private FilteringObjective.Builder buildDoubleTaggedFilteringObj(DeviceId deviceId, PortNumber portNum, |
| VlanId outerVlan, VlanId innerVlan, |
| boolean cleanupDoubleTaggedRules) { |
| MacAddress deviceMac; |
| try { |
| deviceMac = config.getDeviceMac(deviceId); |
| } catch (DeviceConfigNotFoundException e) { |
| log.warn(e.getMessage() + " Processing DoubleTaggedFilters aborted"); |
| return null; |
| } |
| FilteringObjective.Builder fob = DefaultFilteringObjective.builder(); |
| // Outer vlan id match should be appeared before inner vlan id match. |
| fob.withKey(Criteria.matchInPort(portNum)) |
| .addCondition(Criteria.matchEthDst(deviceMac)) |
| .addCondition(Criteria.matchVlanId(outerVlan)) |
| .addCondition(Criteria.matchInnerVlanId(innerVlan)) |
| .withPriority(SegmentRoutingService.DEFAULT_PRIORITY); |
| |
| TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder(); |
| // Pop outer vlan |
| tBuilder.popVlan(); |
| |
| // special metadata for driver |
| if (cleanupDoubleTaggedRules) { |
| tBuilder.writeMetadata(CLEANUP_DOUBLE_TAGGED_HOST_ENTRIES, DOUBLE_TAGGED_METADATA_MASK); |
| } else { |
| tBuilder.writeMetadata(0, DOUBLE_TAGGED_METADATA_MASK); |
| } |
| |
| // NOTE: Some switch hardware share the same filtering flow among different ports. |
| // We use this metadata to let the driver know that there is no more enabled port |
| // within the same VLAN on this device. |
| if (noMoreEnabledPort(deviceId, outerVlan)) { |
| tBuilder.wipeDeferred(); |
| } |
| |
| fob.withMeta(tBuilder.build()); |
| |
| fob.permit().fromApp(srManager.appId); |
| return fob; |
| } |
| |
| /** |
| * Creates packet requests to punt all IP packets for the router. |
| * @param deviceId the switch dpid for the router |
| */ |
| void populateIpPunts(DeviceId deviceId) { |
| manageIpPunts(deviceId, true); |
| } |
| |
| /** |
| * Creates a packet request to punt all IP packets, destined to the |
| * specified IP address, which should be router's port IP address. |
| * |
| * @param deviceId the switch dpid for the router |
| * @param ipAddress the IP address of the router's port |
| */ |
| void populateSingleIpPunts(DeviceId deviceId, IpAddress ipAddress) { |
| manageSingleIpPunts(deviceId, ipAddress, true); |
| } |
| |
| /** |
| * Revokes packet requests for all devices. |
| */ |
| void revokePacketsPunts() { |
| srManager.deviceService.getDevices().forEach(device -> { |
| manageIpPunts(device.id(), false); |
| }); |
| } |
| |
| /** |
| * Revokes the packet request to punt all IP packets, destined to the |
| * router's port IP address, except for the router's IP address. |
| * |
| * @param deviceId the switch dpid for the router |
| * @param ipAddress the IP address of the router's port |
| */ |
| void revokeSingleIpPunts(DeviceId deviceId, IpAddress ipAddress) { |
| try { |
| if (!ipAddress.equals(config.getRouterIpv4(deviceId)) && |
| !ipAddress.equals(config.getRouterIpv6(deviceId))) { |
| manageSingleIpPunts(deviceId, ipAddress, false); |
| } |
| } catch (DeviceConfigNotFoundException e) { |
| log.warn(e.getMessage() + " Aborting revokeSingleIpPunts"); |
| } |
| } |
| |
| /** |
| * Creates or removes forwarding objectives ( packet-requests ) 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 |
| * @param request true to create a packet request, false to remove |
| */ |
| void manageIpPunts(DeviceId deviceId, boolean request) { |
| Ip4Address routerIpv4, pairRouterIpv4 = null; |
| Ip6Address routerIpv6, routerLinkLocalIpv6, pairRouterIpv6 = null; |
| try { |
| routerIpv4 = config.getRouterIpv4(deviceId); |
| routerIpv6 = config.getRouterIpv6(deviceId); |
| routerLinkLocalIpv6 = Ip6Address.valueOf( |
| IPv6.getLinkLocalAddress(config.getDeviceMac(deviceId).toBytes())); |
| |
| if (config.isPairedEdge(deviceId)) { |
| pairRouterIpv4 = config.getRouterIpv4(config.getPairDeviceId(deviceId)); |
| pairRouterIpv6 = config.getRouterIpv6(config.getPairDeviceId(deviceId)); |
| } |
| } catch (DeviceConfigNotFoundException e) { |
| log.warn(e.getMessage() + " Aborting manageIpPunts."); |
| return; |
| } |
| |
| if (request && !srManager.mastershipService.isLocalMaster(deviceId)) { |
| log.debug("Not installing port-IP punts - not the master for dev:{} ", |
| deviceId); |
| return; |
| } |
| |
| Set<IpAddress> allIps = new HashSet<>(config.getPortIPs(deviceId)); |
| allIps.add(routerIpv4); |
| if (routerIpv6 != null) { |
| allIps.add(routerIpv6); |
| allIps.add(routerLinkLocalIpv6); |
| } |
| if (pairRouterIpv4 != null) { |
| allIps.add(pairRouterIpv4); |
| } |
| if (pairRouterIpv6 != null) { |
| allIps.add(pairRouterIpv6); |
| } |
| for (IpAddress ipaddr : allIps) { |
| manageSingleIpPunts(deviceId, ipaddr, request); |
| } |
| } |
| |
| /** |
| * Creates or removes a forwarding objective ( packet-request ) to punt all IP packets, destined to the |
| * specified IP address, which should be router's port IP address. |
| * |
| * @param deviceId the switch dpid for the router |
| * @param ipAddress the IP address of the router's port |
| * @param request true to create a packet request, false to remove |
| */ |
| void manageSingleIpPunts(DeviceId deviceId, IpAddress ipAddress, boolean request) { |
| TrafficSelector.Builder sbuilder = buildIpSelectorFromIpAddress(ipAddress); |
| Optional<DeviceId> optDeviceId = Optional.of(deviceId); |
| |
| if (request) { |
| srManager.packetService.requestPackets(sbuilder.build(), |
| PacketPriority.CONTROL, srManager.appId, optDeviceId); |
| } else { |
| srManager.packetService.cancelPackets(sbuilder.build(), |
| PacketPriority.CONTROL, srManager.appId, optDeviceId); |
| } |
| } |
| |
| // Method for building an IPv4 selector |
| private TrafficSelector.Builder buildIpv4Selector() { |
| TrafficSelector.Builder selectorBuilder = DefaultTrafficSelector.builder(); |
| selectorBuilder.matchEthType(Ethernet.TYPE_IPV4); |
| return selectorBuilder; |
| } |
| |
| // Method for building an IPv6 selector |
| private TrafficSelector.Builder buildIpv6Selector() { |
| TrafficSelector.Builder selectorBuilder = DefaultTrafficSelector.builder(); |
| selectorBuilder.matchEthType(Ethernet.TYPE_IPV6); |
| return selectorBuilder; |
| } |
| |
| // Method for building an IPv4 or IPv6 selector from an IP address |
| private TrafficSelector.Builder buildIpSelectorFromIpAddress(IpAddress addressToMatch) { |
| return buildIpSelectorFromIpPrefix(addressToMatch.toIpPrefix()); |
| } |
| |
| // Method for building an IPv4 or IPv6 selector from an IP prefix |
| private TrafficSelector.Builder buildIpSelectorFromIpPrefix(IpPrefix prefixToMatch) { |
| TrafficSelector.Builder selectorBuilder = DefaultTrafficSelector.builder(); |
| // If the prefix is IPv4 |
| if (prefixToMatch.isIp4()) { |
| selectorBuilder.matchEthType(Ethernet.TYPE_IPV4); |
| selectorBuilder.matchIPDst(prefixToMatch.getIp4Prefix()); |
| return selectorBuilder; |
| } |
| // If the prefix is IPv6 |
| selectorBuilder.matchEthType(Ethernet.TYPE_IPV6); |
| selectorBuilder.matchIPv6Dst(prefixToMatch.getIp6Prefix()); |
| return selectorBuilder; |
| } |
| |
| /** |
| * Creates forwarding objectives to punt ARP and NDP packets, to the controller. |
| * Furthermore, these are applied only by the master instance. Deferred actions |
| * are not cleared such that packets can be flooded in the cross connect use case |
| * |
| * @param deviceId the switch dpid for the router |
| */ |
| void populateArpNdpPunts(DeviceId deviceId) { |
| // We are not the master just skip. |
| if (!srManager.mastershipService.isLocalMaster(deviceId)) { |
| log.debug("Not installing ARP/NDP punts - not the master for dev:{} ", |
| deviceId); |
| return; |
| } |
| |
| ForwardingObjective fwdObj; |
| // We punt all ARP packets towards the controller. |
| fwdObj = arpFwdObjective(null, true, ARP_NDP_PRIORITY) |
| .add(new ObjectiveContext() { |
| @Override |
| public void onError(Objective objective, ObjectiveError error) { |
| log.warn("Failed to install forwarding objective to punt ARP to {}: {}", |
| deviceId, error); |
| } |
| }); |
| srManager.flowObjectiveService.forward(deviceId, fwdObj); |
| |
| if (isIpv6Configured(deviceId)) { |
| // We punt all NDP packets towards the controller. |
| ndpFwdObjective(null, true, ARP_NDP_PRIORITY).forEach(builder -> { |
| ForwardingObjective obj = builder.add(new ObjectiveContext() { |
| @Override |
| public void onError(Objective objective, ObjectiveError error) { |
| log.warn("Failed to install forwarding objective to punt NDP to {}: {}", |
| deviceId, error); |
| } |
| }); |
| srManager.flowObjectiveService.forward(deviceId, obj); |
| }); |
| } |
| |
| srManager.getPairLocalPort(deviceId).ifPresent(port -> { |
| ForwardingObjective pairFwdObj; |
| // Do not punt ARP packets from pair port |
| pairFwdObj = arpFwdObjective(port, false, PacketPriority.CONTROL.priorityValue() + 1) |
| .add(new ObjectiveContext() { |
| @Override |
| public void onError(Objective objective, ObjectiveError error) { |
| log.warn("Failed to install forwarding objective to ignore ARP to {}: {}", |
| deviceId, error); |
| } |
| }); |
| srManager.flowObjectiveService.forward(deviceId, pairFwdObj); |
| |
| if (isIpv6Configured(deviceId)) { |
| // Do not punt NDP packets from pair port |
| ndpFwdObjective(port, false, PacketPriority.CONTROL.priorityValue() + 1).forEach(builder -> { |
| ForwardingObjective obj = builder.add(new ObjectiveContext() { |
| @Override |
| public void onError(Objective objective, ObjectiveError error) { |
| log.warn("Failed to install forwarding objective to ignore ARP to {}: {}", |
| deviceId, error); |
| } |
| }); |
| srManager.flowObjectiveService.forward(deviceId, obj); |
| }); |
| |
| // Do not forward DAD packets from pair port |
| pairFwdObj = dad6FwdObjective(port, PacketPriority.CONTROL.priorityValue() + 2) |
| .add(new ObjectiveContext() { |
| @Override |
| public void onError(Objective objective, ObjectiveError error) { |
| log.warn("Failed to install forwarding objective to drop DAD to {}: {}", |
| deviceId, error); |
| } |
| }); |
| srManager.flowObjectiveService.forward(deviceId, pairFwdObj); |
| } |
| }); |
| } |
| |
| private ForwardingObjective.Builder fwdObjBuilder(TrafficSelector selector, |
| TrafficTreatment treatment, int priority) { |
| return DefaultForwardingObjective.builder() |
| .withPriority(priority) |
| .withSelector(selector) |
| .fromApp(srManager.appId) |
| .withFlag(ForwardingObjective.Flag.VERSATILE) |
| .withTreatment(treatment) |
| .makePermanent(); |
| } |
| |
| private ForwardingObjective.Builder arpFwdObjective(PortNumber port, boolean punt, int priority) { |
| TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder(); |
| sBuilder.matchEthType(TYPE_ARP); |
| if (port != null) { |
| sBuilder.matchInPort(port); |
| } |
| |
| TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder(); |
| if (punt) { |
| tBuilder.punt(); |
| } |
| return fwdObjBuilder(sBuilder.build(), tBuilder.build(), priority); |
| } |
| |
| private Set<ForwardingObjective.Builder> ndpFwdObjective(PortNumber port, boolean punt, int priority) { |
| Set<ForwardingObjective.Builder> result = Sets.newHashSet(); |
| |
| Lists.newArrayList(NEIGHBOR_SOLICITATION, NEIGHBOR_ADVERTISEMENT, ROUTER_SOLICITATION, ROUTER_ADVERTISEMENT) |
| .forEach(type -> { |
| TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder(); |
| sBuilder.matchEthType(TYPE_IPV6) |
| .matchIPProtocol(PROTOCOL_ICMP6) |
| .matchIcmpv6Type(type); |
| if (port != null) { |
| sBuilder.matchInPort(port); |
| } |
| |
| TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder(); |
| if (punt) { |
| tBuilder.punt(); |
| } |
| |
| result.add(fwdObjBuilder(sBuilder.build(), tBuilder.build(), priority)); |
| }); |
| |
| return result; |
| } |
| |
| private ForwardingObjective.Builder dad6FwdObjective(PortNumber port, int priority) { |
| TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder(); |
| sBuilder.matchEthType(TYPE_IPV6) |
| .matchIPv6Src(Ip6Address.ZERO.toIpPrefix()); |
| // TODO CORD-1672 Fix this when OFDPA can distinguish ::/0 and ::/128 correctly |
| // .matchIPProtocol(PROTOCOL_ICMP6) |
| // .matchIcmpv6Type(NEIGHBOR_SOLICITATION); |
| if (port != null) { |
| sBuilder.matchInPort(port); |
| } |
| |
| TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder(); |
| tBuilder.wipeDeferred(); |
| return fwdObjBuilder(sBuilder.build(), tBuilder.build(), priority); |
| } |
| |
| /** |
| * Block given prefix in routing table. |
| * |
| * @param address the address to block |
| * @param deviceId switch ID to set the rules |
| */ |
| void populateDefaultRouteBlackhole(DeviceId deviceId, IpPrefix address) { |
| updateDefaultRouteBlackhole(deviceId, address, true); |
| } |
| |
| /** |
| * Unblock given prefix in routing table. |
| * |
| * @param address the address to block |
| * @param deviceId switch ID to set the rules |
| */ |
| void removeDefaultRouteBlackhole(DeviceId deviceId, IpPrefix address) { |
| updateDefaultRouteBlackhole(deviceId, address, false); |
| } |
| |
| private void updateDefaultRouteBlackhole(DeviceId deviceId, IpPrefix address, boolean install) { |
| try { |
| if (srManager.deviceConfiguration.isEdgeDevice(deviceId)) { |
| |
| TrafficSelector.Builder sbuilder = DefaultTrafficSelector.builder(); |
| if (address.isIp4()) { |
| sbuilder.matchIPDst(address); |
| sbuilder.matchEthType(EthType.EtherType.IPV4.ethType().toShort()); |
| } else { |
| sbuilder.matchIPv6Dst(address); |
| sbuilder.matchEthType(EthType.EtherType.IPV6.ethType().toShort()); |
| } |
| |
| TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder(); |
| tBuilder.wipeDeferred(); |
| |
| ForwardingObjective.Builder fob = DefaultForwardingObjective.builder(); |
| fob.withFlag(Flag.SPECIFIC) |
| .withSelector(sbuilder.build()) |
| .withTreatment(tBuilder.build()) |
| .withPriority(getPriorityFromPrefix(address)) |
| .fromApp(srManager.appId) |
| .makePermanent(); |
| |
| log.debug("{} blackhole forwarding objectives for dev: {}", |
| install ? "Installing" : "Removing", deviceId); |
| ObjectiveContext context = new DefaultObjectiveContext( |
| (objective) -> log.debug("Forward for {} {}", deviceId, |
| install ? "installed" : "removed"), |
| (objective, error) -> log.warn("Failed to {} forward for {}: {}", |
| install ? "install" : "remove", deviceId, error)); |
| if (install) { |
| srManager.flowObjectiveService.forward(deviceId, fob.add(context)); |
| } else { |
| srManager.flowObjectiveService.forward(deviceId, fob.remove(context)); |
| } |
| } |
| } catch (DeviceConfigNotFoundException e) { |
| log.info("Not populating blackhole for un-configured device {}", deviceId); |
| } |
| |
| } |
| |
| /** |
| * 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. |
| * |
| * @param deviceId switch ID to set the rules |
| */ |
| void populateSubnetBroadcastRule(DeviceId deviceId) { |
| srManager.getVlanPortMap(deviceId).asMap().forEach((vlanId, ports) -> { |
| updateSubnetBroadcastRule(deviceId, vlanId, true); |
| }); |
| } |
| |
| /** |
| * Creates or removes a forwarding objective to broadcast packets to its subnet. |
| * @param deviceId switch ID to set the rule |
| * @param vlanId vlan ID to specify the subnet |
| * @param install true to install the rule, false to revoke the rule |
| */ |
| void updateSubnetBroadcastRule(DeviceId deviceId, VlanId vlanId, boolean install) { |
| int nextId = srManager.getVlanNextObjectiveId(deviceId, vlanId); |
| |
| if (nextId < 0) { |
| log.error("Cannot install vlan {} broadcast rule in dev:{} due" |
| + " to vlanId:{} or nextId:{}", vlanId, 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("Vlan broadcast rule for {} populated", vlanId), |
| (objective, error) -> |
| log.warn("Failed to populate vlan broadcast rule for {}: {}", vlanId, error)); |
| |
| if (install) { |
| srManager.flowObjectiveService.forward(deviceId, fob.add(context)); |
| } else { |
| srManager.flowObjectiveService.forward(deviceId, fob.remove(context)); |
| } |
| } |
| |
| private int getPriorityFromPrefix(IpPrefix prefix) { |
| return (prefix.isIp4()) ? |
| 2000 * prefix.prefixLength() + SegmentRoutingService.MIN_IP_PRIORITY : |
| 500 * prefix.prefixLength() + SegmentRoutingService.MIN_IP_PRIORITY; |
| } |
| |
| /** |
| * Update Forwarding objective for each host and IP address connected to given port. |
| * And create corresponding Simple Next objective if it does not exist. |
| * Applied only when populating Forwarding objective |
| * @param deviceId switch ID to set the rule |
| * @param portNumber port number |
| * @param prefix IP prefix of the route |
| * @param hostMac MAC address of the next hop |
| * @param vlanId Vlan ID of the port |
| * @param popVlan true to pop vlan tag in TrafficTreatment |
| * @param install true to populate the forwarding objective, false to revoke |
| */ |
| void updateFwdObj(DeviceId deviceId, PortNumber portNumber, IpPrefix prefix, MacAddress hostMac, |
| VlanId vlanId, boolean popVlan, boolean install) { |
| ForwardingObjective.Builder fob; |
| TrafficSelector.Builder sbuilder = buildIpSelectorFromIpPrefix(prefix); |
| MacAddress deviceMac; |
| try { |
| deviceMac = config.getDeviceMac(deviceId); |
| } catch (DeviceConfigNotFoundException e) { |
| log.warn(e.getMessage() + " Aborting updateFwdObj."); |
| return; |
| } |
| |
| TrafficTreatment.Builder tbuilder = DefaultTrafficTreatment.builder(); |
| tbuilder.deferred() |
| .setEthDst(hostMac) |
| .setEthSrc(deviceMac) |
| .setOutput(portNumber); |
| |
| TrafficSelector.Builder mbuilder = DefaultTrafficSelector.builder(); |
| |
| if (!popVlan) { |
| tbuilder.setVlanId(vlanId); |
| } else { |
| mbuilder.matchVlanId(vlanId); |
| } |
| |
| // if the objective is to revoke an existing rule, and for some reason |
| // the next-objective does not exist, then a new one should not be created |
| int portNextObjId = srManager.getPortNextObjectiveId(deviceId, portNumber, |
| tbuilder.build(), mbuilder.build(), install); |
| if (portNextObjId == -1) { |
| // Warning log will come from getPortNextObjective method |
| return; |
| } |
| |
| fob = DefaultForwardingObjective.builder().withSelector(sbuilder.build()) |
| .nextStep(portNextObjId).fromApp(srManager.appId).makePermanent() |
| .withPriority(getPriorityFromPrefix(prefix)).withFlag(ForwardingObjective.Flag.SPECIFIC); |
| |
| ObjectiveContext context = new DefaultObjectiveContext( |
| (objective) -> log.debug("IP rule for route {} {}", prefix, install ? "installed" : "revoked"), |
| (objective, error) -> |
| log.warn("Failed to {} IP rule for route {}: {}", |
| install ? "install" : "revoke", prefix, error)); |
| srManager.flowObjectiveService.forward(deviceId, install ? fob.add(context) : fob.remove(context)); |
| |
| if (!install) { |
| if (!srManager.getVlanPortMap(deviceId).containsKey(vlanId) || |
| !srManager.getVlanPortMap(deviceId).get(vlanId).contains(portNumber)) { |
| DefaultGroupHandler grpHandler = srManager.getGroupHandler(deviceId); |
| if (grpHandler == null) { |
| log.warn("updateFwdObj: groupHandler for device {} not found", deviceId); |
| } else { |
| // Remove L3UG for the given port and host |
| grpHandler.removeGroupFromPort(portNumber, tbuilder.build(), mbuilder.build()); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Checks if there is other enabled port within the given VLAN on the given device. |
| * |
| * @param deviceId device ID |
| * @param vlanId VLAN ID |
| * @return true if there is no more port enabled within the given VLAN on the given device |
| */ |
| boolean noMoreEnabledPort(DeviceId deviceId, VlanId vlanId) { |
| Set<ConnectPoint> enabledPorts = srManager.deviceService.getPorts(deviceId).stream() |
| .filter(Port::isEnabled) |
| .map(port -> new ConnectPoint(port.element().id(), port.number())) |
| .collect(Collectors.toSet()); |
| |
| return enabledPorts.stream().noneMatch(cp -> |
| // Given vlanId is included in the vlan-tagged configuration |
| srManager.interfaceService.getTaggedVlanId(cp).contains(vlanId) || |
| // Given vlanId is INTERNAL_VLAN or PSEUDOWIRE_VLAN and the interface is not configured |
| (srManager.interfaceService.getTaggedVlanId(cp).isEmpty() && srManager.getInternalVlanId(cp) == null && |
| (vlanId.equals(srManager.getDefaultInternalVlan()) || vlanId.equals(srManager.getPwTransportVlan()))) || |
| // interface is configured and either vlan-untagged or vlan-native matches given vlanId |
| (srManager.getInternalVlanId(cp) != null && srManager.getInternalVlanId(cp).equals(vlanId)) |
| ); |
| } |
| |
| /** |
| * Returns a forwarding objective builder for egress forwarding rules. |
| * <p> |
| * The forwarding objective installs flow rules to egress pipeline to push |
| * two vlan headers with given inner, outer vlan ids and outer tpid. |
| * |
| * @param portNumber port where the next hop attaches to |
| * @param dummyVlanId vlan ID of the packet to match |
| * @param innerVlan inner vlan ID of the next hop |
| * @param outerVlan outer vlan ID of the next hop |
| * @param outerTpid outer TPID of the next hop |
| * @return forwarding objective builder |
| */ |
| private ForwardingObjective.Builder egressFwdObjBuilder(PortNumber portNumber, VlanId dummyVlanId, |
| VlanId innerVlan, VlanId outerVlan, EthType outerTpid) { |
| TrafficSelector.Builder sbuilder = DefaultTrafficSelector.builder(); |
| sbuilder.matchVlanId(dummyVlanId); |
| TrafficTreatment.Builder tbuilder = DefaultTrafficTreatment.builder(); |
| tbuilder.setOutput(portNumber).setVlanId(innerVlan); |
| |
| if (outerTpid.equals(EthType.EtherType.QINQ.ethType())) { |
| tbuilder.pushVlan(outerTpid); |
| } else { |
| tbuilder.pushVlan(); |
| } |
| |
| tbuilder.setVlanId(outerVlan); |
| return DefaultForwardingObjective.builder() |
| .withSelector(sbuilder.build()) |
| .withTreatment(tbuilder.build()) |
| .fromApp(srManager.appId) |
| .makePermanent() |
| .withPriority(DEFAULT_PRIORITY) |
| .withFlag(ForwardingObjective.Flag.EGRESS); |
| } |
| |
| /** |
| * Populates IP rules for a route that has double-tagged next hop. |
| * |
| * @param deviceId device ID of the device that next hop attaches to |
| * @param prefix IP prefix of the route |
| * @param hostMac MAC address of the next hop |
| * @param innerVlan inner Vlan ID of the next hop |
| * @param outerVlan outer Vlan ID of the next hop |
| * @param outerTpid outer TPID of the next hop |
| * @param outPort port where the next hop attaches to |
| */ |
| void populateDoubleTaggedRoute(DeviceId deviceId, IpPrefix prefix, MacAddress hostMac, |
| VlanId innerVlan, VlanId outerVlan, EthType outerTpid, PortNumber outPort) { |
| ForwardingObjective.Builder fwdBuilder; |
| log.debug("Populate direct routing entry for double-tagged host route {} at {}:{}", |
| prefix, deviceId, outPort); |
| |
| try { |
| fwdBuilder = routingFwdObjBuilder(deviceId, prefix, hostMac, outerVlan, outPort, innerVlan, outerTpid, |
| true, false); |
| } catch (DeviceConfigNotFoundException e) { |
| log.error(e.getMessage() + " Aborting populateDoubleTaggedRoute"); |
| return; |
| } |
| if (fwdBuilder == null) { |
| log.error("Aborting double-tagged host routing table entry due to error for dev:{} route:{}", |
| deviceId, prefix); |
| return; |
| } |
| |
| int nextId = fwdBuilder.add().nextId(); |
| DefaultObjectiveContext context = new DefaultObjectiveContext(objective -> { |
| log.debug("Direct routing rule for double-tagged host route {} populated. nextId={}", prefix, nextId); |
| }, (objective, error) -> |
| log.warn("Failed to populate direct routing rule for double-tagged host route {}: {}", prefix, error) |
| ); |
| srManager.flowObjectiveService.forward(deviceId, fwdBuilder.add(context)); |
| rulePopulationCounter.incrementAndGet(); |
| } |
| |
| /** |
| * Revokes IP rules for a route that has double-tagged next hop. |
| * |
| * @param deviceId device ID of the device that next hop attaches to |
| * @param prefix IP prefix of the route |
| * @param hostMac MAC address of the next hop |
| * @param innerVlan inner Vlan ID of the next hop |
| * @param outerVlan outer Vlan ID of the next hop |
| * @param outerTpid outer TPID of the next hop |
| * @param outPort port where the next hop attaches to |
| */ |
| void revokeDoubleTaggedRoute(DeviceId deviceId, IpPrefix prefix, MacAddress hostMac, |
| VlanId innerVlan, VlanId outerVlan, EthType outerTpid, PortNumber outPort) { |
| ForwardingObjective.Builder fwdBuilder; |
| log.debug("Revoking direct routing entry for double-tagged host route {} at {}:{}", |
| prefix, deviceId, outPort); |
| |
| try { |
| fwdBuilder = routingFwdObjBuilder(deviceId, prefix, hostMac, outerVlan, outPort, innerVlan, outerTpid, |
| true, true); |
| } catch (DeviceConfigNotFoundException e) { |
| log.error(e.getMessage() + " Aborting revokeDoubleTaggedRoute"); |
| return; |
| } |
| if (fwdBuilder == null) { |
| log.error("Aborting double-tagged host routing table entry due to error for dev:{} route:{}", |
| deviceId, prefix); |
| return; |
| } |
| |
| int nextId = fwdBuilder.remove().nextId(); |
| DefaultObjectiveContext context = new DefaultObjectiveContext(objective -> { |
| log.debug("Direct routing rule for double-tagged host route {} revoked. nextId={}", prefix, nextId); |
| |
| // Try to remove next objective as well |
| ImmutablePair<TrafficTreatment, TrafficSelector> treatmentAndMeta; |
| try { |
| treatmentAndMeta = getTreatmentAndMeta(deviceId, hostMac, outerVlan, outPort, innerVlan, outerTpid); |
| } catch (DeviceConfigNotFoundException e) { |
| log.error(e.getMessage() + " Aborting revokeDoubleTaggedRoute"); |
| return; |
| } |
| |
| if (treatmentAndMeta == null) { |
| // Warning log will come from getTreatmentAndMeta method |
| return; |
| } |
| |
| DefaultGroupHandler groupHandler = srManager.getGroupHandler(deviceId); |
| if (groupHandler == null) { |
| log.warn("Failed to revoke direct routing rule for double-tagged host route {}: " + |
| "group handler not found for {}", prefix, deviceId); |
| return; |
| } |
| groupHandler.removeGroupFromPort(outPort, treatmentAndMeta.getLeft(), treatmentAndMeta.getRight()); |
| |
| }, (objective, error) -> |
| log.warn("Failed to revoke direct routing rule for double-tagged host route {}: {}", prefix, error) |
| ); |
| srManager.flowObjectiveService.forward(deviceId, fwdBuilder.remove(context)); |
| } |
| |
| /** |
| * Checks whether the specified port has IP configuration or not. |
| * |
| * @param cp ConnectPoint to check the existance of IP configuration |
| * @return true if the port has IP configuration; false otherwise. |
| */ |
| private boolean hasIPConfiguration(ConnectPoint cp) { |
| Set<Interface> interfaces = srManager.interfaceService.getInterfacesByPort(cp); |
| return interfaces.stream().anyMatch(intf -> intf.ipAddressesList().size() > 0); |
| } |
| |
| /** |
| * Updates filtering rules for unconfigured ports on all devices for which |
| * this controller instance is master. |
| * |
| * @param pushVlan true if the filtering rule requires a push vlan action |
| * @param oldVlanId the vlanId to be removed |
| * @param newVlanId the vlanId to be added |
| */ |
| void updateSpecialVlanFilteringRules(boolean pushVlan, VlanId oldVlanId, |
| VlanId newVlanId) { |
| for (Device dev : srManager.deviceService.getAvailableDevices()) { |
| if (srManager.mastershipService.isLocalMaster(dev.id())) { |
| for (Port p : srManager.deviceService.getPorts(dev.id())) { |
| if (!hasIPConfiguration(new ConnectPoint(dev.id(), p.number())) |
| && p.isEnabled()) { |
| updateSinglePortFilters(dev.id(), p.number(), pushVlan, |
| oldVlanId, false); |
| updateSinglePortFilters(dev.id(), p.number(), pushVlan, |
| newVlanId, true); |
| } |
| } |
| } |
| } |
| } |
| |
| private boolean isIpv6Configured(DeviceId deviceId) { |
| boolean isIpv6Configured; |
| try { |
| isIpv6Configured = (config.getRouterIpv6(deviceId) != null); |
| } catch (DeviceConfigNotFoundException e) { |
| isIpv6Configured = false; |
| } |
| return isIpv6Configured; |
| } |
| } |