| /* |
| * 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.routing.impl; |
| |
| import com.google.common.collect.ImmutableSortedSet; |
| import com.google.common.collect.Lists; |
| import com.google.common.collect.Maps; |
| import com.google.common.collect.Sets; |
| import org.apache.felix.scr.annotations.Activate; |
| import org.apache.felix.scr.annotations.Component; |
| import org.apache.felix.scr.annotations.Deactivate; |
| import org.apache.felix.scr.annotations.Reference; |
| import org.apache.felix.scr.annotations.ReferenceCardinality; |
| import org.onlab.packet.EthType; |
| import org.onlab.packet.Ip4Address; |
| import org.onlab.packet.IpPrefix; |
| import org.onlab.packet.MacAddress; |
| import org.onlab.packet.VlanId; |
| import org.onosproject.app.ApplicationService; |
| import org.onosproject.core.ApplicationId; |
| import org.onosproject.core.CoreService; |
| import org.onosproject.incubator.net.intf.Interface; |
| import org.onosproject.incubator.net.intf.InterfaceService; |
| import org.onosproject.mastership.MastershipService; |
| import org.onosproject.net.ConnectPoint; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.Host; |
| import org.onosproject.net.PortNumber; |
| import org.onosproject.net.config.NetworkConfigEvent; |
| import org.onosproject.net.config.NetworkConfigListener; |
| import org.onosproject.net.config.NetworkConfigService; |
| import org.onosproject.net.device.DeviceService; |
| 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.flowobjective.DefaultForwardingObjective; |
| import org.onosproject.net.flowobjective.DefaultNextObjective; |
| import org.onosproject.net.flowobjective.FlowObjectiveService; |
| import org.onosproject.net.flowobjective.ForwardingObjective; |
| import org.onosproject.net.flowobjective.NextObjective; |
| import org.onosproject.net.host.HostEvent; |
| import org.onosproject.net.host.HostListener; |
| import org.onosproject.net.host.HostService; |
| import org.onosproject.net.host.InterfaceIpAddress; |
| import org.onosproject.routing.RoutingService; |
| import org.onosproject.routing.config.RouterConfig; |
| import org.slf4j.Logger; |
| |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Optional; |
| import java.util.Set; |
| |
| import static com.google.common.base.Preconditions.checkState; |
| import static org.onlab.packet.Ethernet.TYPE_ARP; |
| import static org.onlab.packet.Ethernet.TYPE_IPV4; |
| 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.IPv6.PROTOCOL_ICMP6; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * Manages connectivity between peers redirecting control traffic to a routing |
| * control plane available on the dataplane. |
| */ |
| @Component(immediate = true, enabled = false) |
| public class ControlPlaneRedirectManager { |
| |
| private final Logger log = getLogger(getClass()); |
| |
| private static final int MIN_IP_PRIORITY = 10; |
| private static final int IPV4_PRIORITY = 2000; |
| private static final int IPV6_PRIORITY = 500; |
| static final int ACL_PRIORITY = 40001; |
| private static final int OSPF_IP_PROTO = 0x59; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected CoreService coreService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected DeviceService deviceService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected InterfaceService interfaceService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected FlowObjectiveService flowObjectiveService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected NetworkConfigService networkConfigService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected MastershipService mastershipService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected HostService hostService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected ApplicationService applicationService; |
| |
| private static final String APP_NAME = "org.onosproject.vrouter"; |
| private ApplicationId appId; |
| |
| private ConnectPoint controlPlaneConnectPoint; |
| private boolean ospfEnabled = false; |
| private Map<Host, Set<Integer>> peerNextId = Maps.newConcurrentMap(); |
| |
| private RouterInterfaceManager interfaceManager; |
| private AsyncDeviceFetcher asyncDeviceFetcher; |
| |
| private final InternalNetworkConfigListener networkConfigListener = |
| new InternalNetworkConfigListener(); |
| private final InternalHostListener hostListener = new InternalHostListener(); |
| |
| @Activate |
| public void activate() { |
| this.appId = coreService.registerApplication(APP_NAME); |
| |
| networkConfigService.addListener(networkConfigListener); |
| hostService.addListener(hostListener); |
| |
| asyncDeviceFetcher = AsyncDeviceFetcher.create(deviceService); |
| |
| processRouterConfig(); |
| |
| // FIXME There can be an issue when this component is deactivated before vRouter |
| applicationService.registerDeactivateHook(this.appId, () -> { |
| if (interfaceManager != null) { |
| interfaceManager.cleanup(); |
| } |
| }); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| networkConfigService.removeListener(networkConfigListener); |
| hostService.removeListener(hostListener); |
| asyncDeviceFetcher.shutdown(); |
| } |
| |
| /** |
| * Sets up the router interfaces if router config is available. |
| */ |
| private void processRouterConfig() { |
| ApplicationId routingAppId = |
| coreService.registerApplication(RoutingService.ROUTER_APP_ID); |
| |
| RouterConfig config = networkConfigService.getConfig( |
| routingAppId, RoutingService.ROUTER_CONFIG_CLASS); |
| |
| if (config == null) { |
| log.warn("Router config not available"); |
| return; |
| } |
| |
| if (interfaceManager == null) { |
| controlPlaneConnectPoint = config.getControlPlaneConnectPoint(); |
| ospfEnabled = config.getOspfEnabled(); |
| |
| DeviceId deviceId = config.getControlPlaneConnectPoint().deviceId(); |
| |
| asyncDeviceFetcher.getDevice(deviceId) |
| .thenAccept(deviceId1 -> |
| interfaceManager = createRouter(deviceId, |
| Sets.newHashSet(config.getInterfaces()))); |
| |
| } else { |
| interfaceManager.changeConfiguredInterfaces(Sets.newHashSet(config.getInterfaces())); |
| } |
| } |
| |
| /** |
| * Cleans up after router config was removed. |
| */ |
| private void removeRouterConfig() { |
| if (interfaceManager != null) { |
| interfaceManager.cleanup(); |
| } |
| } |
| |
| private RouterInterfaceManager createRouter(DeviceId deviceId, Set<String> configuredInterfaces) { |
| return new RouterInterfaceManager(deviceId, |
| configuredInterfaces, |
| interfaceService, |
| this::provisionInterface, |
| this::unprovisionInterface); |
| } |
| |
| private void provisionInterface(Interface intf) { |
| updateInterfaceObjectives(intf, true); |
| } |
| |
| private void unprovisionInterface(Interface intf) { |
| updateInterfaceObjectives(intf, false); |
| } |
| |
| /** |
| * Installs or removes flow objectives relating to a give interface. |
| * |
| * @param intf interface to change objectives for |
| * @param install true to install the objectives, false to remove them |
| */ |
| private void updateInterfaceObjectives(Interface intf, boolean install) { |
| updateInterfaceForwarding(intf, install); |
| updateOspfForwarding(intf, install); |
| } |
| |
| /** |
| * Installs or removes the basic forwarding flows for each interface. |
| * |
| * @param intf the Interface on which event is received |
| * @param install true to install the objectives, false to remove them |
| */ |
| private void updateInterfaceForwarding(Interface intf, boolean install) { |
| log.debug("{} interface objectives for {}", operation(install), intf); |
| |
| DeviceId deviceId = intf.connectPoint().deviceId(); |
| PortNumber controlPlanePort = controlPlaneConnectPoint.port(); |
| for (InterfaceIpAddress ip : intf.ipAddresses()) { |
| // create nextObjectives for forwarding to this interface and the |
| // controlPlaneConnectPoint |
| int cpNextId, intfNextId; |
| if (intf.vlan() == VlanId.NONE) { |
| cpNextId = modifyNextObjective(deviceId, controlPlanePort, |
| VlanId.vlanId(SingleSwitchFibInstaller.ASSIGNED_VLAN), |
| true, install); |
| intfNextId = modifyNextObjective(deviceId, intf.connectPoint().port(), |
| VlanId.vlanId(SingleSwitchFibInstaller.ASSIGNED_VLAN), |
| true, install); |
| } else { |
| cpNextId = modifyNextObjective(deviceId, controlPlanePort, |
| intf.vlan(), false, install); |
| intfNextId = modifyNextObjective(deviceId, intf.connectPoint().port(), |
| intf.vlan(), false, install); |
| } |
| List<ForwardingObjective> fwdToSend = Lists.newArrayList(); |
| TrafficSelector selector; |
| // IP traffic toward the router. |
| selector = buildIPDstSelector( |
| ip.ipAddress().toIpPrefix(), |
| intf.connectPoint().port(), |
| null, |
| intf.mac(), |
| intf.vlan() |
| ); |
| fwdToSend.add(buildForwardingObjective(selector, null, cpNextId, install, ACL_PRIORITY)); |
| // IP traffic from the router. |
| selector = buildIPSrcSelector( |
| ip.ipAddress().toIpPrefix(), |
| controlPlanePort, |
| intf.mac(), |
| null, |
| intf.vlan() |
| ); |
| fwdToSend.add(buildForwardingObjective(selector, null, intfNextId, install, ACL_PRIORITY)); |
| // We build the punt treatment. |
| TrafficTreatment treatment = DefaultTrafficTreatment.builder() |
| .punt() |
| .build(); |
| // Handling of neighbour discovery protocols. |
| // IPv4 traffic - we have to deal with the ARP protocol. |
| // IPv6 traffic - we have to deal with the NDP protocol. |
| if (ip.ipAddress().isIp4()) { |
| // ARP traffic towards the router. |
| selector = buildArpSelector( |
| intf.connectPoint().port(), |
| intf.vlan(), |
| null, |
| null |
| ); |
| fwdToSend.add(buildForwardingObjective(selector, treatment, cpNextId, install, ACL_PRIORITY + 1)); |
| // ARP traffic from the router. |
| selector = buildArpSelector( |
| controlPlanePort, |
| intf.vlan(), |
| ip.ipAddress().getIp4Address(), |
| intf.mac() |
| ); |
| fwdToSend.add(buildForwardingObjective(selector, treatment, intfNextId, install, ACL_PRIORITY + 1)); |
| } else { |
| // Neighbour solicitation traffic towards the router. |
| selector = buildNdpSelector( |
| intf.connectPoint().port(), |
| intf.vlan(), |
| null, |
| NEIGHBOR_SOLICITATION, |
| null |
| ); |
| fwdToSend.add(buildForwardingObjective(selector, treatment, cpNextId, install, ACL_PRIORITY + 1)); |
| // Neighbour solicitation traffic from the router. |
| selector = buildNdpSelector( |
| controlPlanePort, |
| intf.vlan(), |
| ip.ipAddress().toIpPrefix(), |
| NEIGHBOR_SOLICITATION, |
| intf.mac() |
| ); |
| fwdToSend.add(buildForwardingObjective(selector, treatment, intfNextId, install, ACL_PRIORITY + 1)); |
| // Neighbour advertisement traffic towards the router. |
| selector = buildNdpSelector( |
| intf.connectPoint().port(), |
| intf.vlan(), |
| null, |
| NEIGHBOR_ADVERTISEMENT, |
| null |
| ); |
| fwdToSend.add(buildForwardingObjective(selector, treatment, cpNextId, install, ACL_PRIORITY + 1)); |
| // Neighbour advertisement traffic from the router. |
| selector = buildNdpSelector( |
| controlPlanePort, |
| intf.vlan(), |
| ip.ipAddress().toIpPrefix(), |
| NEIGHBOR_ADVERTISEMENT, |
| intf.mac() |
| ); |
| fwdToSend.add(buildForwardingObjective(selector, treatment, intfNextId, install, ACL_PRIORITY + 1)); |
| } |
| // Finally we push the fwd objectives through the flow objective service. |
| fwdToSend.stream().forEach(forwardingObjective -> |
| flowObjectiveService.forward(deviceId, forwardingObjective) |
| ); |
| } |
| } |
| |
| /** |
| * Installs or removes OSPF forwarding rules. |
| * |
| * @param intf the interface on which event is received |
| * @param install true to create an add objective, false to create a remove |
| * objective |
| */ |
| private void updateOspfForwarding(Interface intf, boolean install) { |
| // TODO IPv6 support has not been implemented yet |
| |
| log.debug("{} OSPF flows for {}", operation(install), intf); |
| |
| // OSPF to router |
| TrafficSelector toSelector = DefaultTrafficSelector.builder() |
| .matchInPort(intf.connectPoint().port()) |
| .matchEthType(EthType.EtherType.IPV4.ethType().toShort()) |
| .matchVlanId(intf.vlan()) |
| .matchIPProtocol((byte) OSPF_IP_PROTO) |
| .build(); |
| |
| // create nextObjectives for forwarding to the controlPlaneConnectPoint |
| DeviceId deviceId = intf.connectPoint().deviceId(); |
| PortNumber controlPlanePort = intf.connectPoint().port(); |
| int cpNextId; |
| if (intf.vlan() == VlanId.NONE) { |
| cpNextId = modifyNextObjective(deviceId, controlPlanePort, |
| VlanId.vlanId(SingleSwitchFibInstaller.ASSIGNED_VLAN), |
| true, install); |
| } else { |
| cpNextId = modifyNextObjective(deviceId, controlPlanePort, |
| intf.vlan(), false, install); |
| } |
| flowObjectiveService.forward(intf.connectPoint().deviceId(), |
| buildForwardingObjective(toSelector, null, cpNextId, |
| install ? ospfEnabled : install, ACL_PRIORITY)); |
| } |
| |
| /** |
| * Creates a next objective for forwarding to a port. Handles metadata for |
| * some pipelines that require vlan information for egress port. |
| * |
| * @param deviceId the device on which the next objective is being created |
| * @param portNumber the egress port |
| * @param vlanId vlan information for egress port |
| * @param popVlan if vlan tag should be popped or not |
| * @param install true to create an add next objective, false to create a remove |
| * next objective |
| * @return nextId of the next objective created |
| */ |
| private int modifyNextObjective(DeviceId deviceId, PortNumber portNumber, |
| VlanId vlanId, boolean popVlan, boolean install) { |
| int nextId = flowObjectiveService.allocateNextId(); |
| NextObjective.Builder nextObjBuilder = DefaultNextObjective |
| .builder().withId(nextId) |
| .withType(NextObjective.Type.SIMPLE) |
| .fromApp(appId); |
| |
| TrafficTreatment.Builder ttBuilder = DefaultTrafficTreatment.builder(); |
| if (popVlan) { |
| ttBuilder.popVlan(); |
| } |
| ttBuilder.setOutput(portNumber); |
| |
| // setup metadata to pass to nextObjective - indicate the vlan on egress |
| // if needed by the switch pipeline. |
| TrafficSelector.Builder metabuilder = DefaultTrafficSelector.builder(); |
| metabuilder.matchVlanId(vlanId); |
| |
| nextObjBuilder.withMeta(metabuilder.build()); |
| nextObjBuilder.addTreatment(ttBuilder.build()); |
| log.debug("Submitted next objective {} in device {} for port/vlan {}/{}", |
| nextId, deviceId, portNumber, vlanId); |
| if (install) { |
| flowObjectiveService.next(deviceId, nextObjBuilder.add()); |
| } else { |
| flowObjectiveService.next(deviceId, nextObjBuilder.remove()); |
| } |
| return nextId; |
| } |
| |
| /** |
| * Builds a forwarding objective from the given selector, treatment and nextId. |
| * |
| * @param selector selector |
| * @param treatment treatment to apply to packet, can be null |
| * @param nextId next objective to point to for forwarding packet |
| * @param add true to create an add objective, false to create a remove |
| * objective |
| * @return forwarding objective |
| */ |
| private ForwardingObjective buildForwardingObjective(TrafficSelector selector, |
| TrafficTreatment treatment, |
| int nextId, |
| boolean add, |
| int priority) { |
| DefaultForwardingObjective.Builder fobBuilder = DefaultForwardingObjective.builder(); |
| fobBuilder.withSelector(selector); |
| if (treatment != null) { |
| fobBuilder.withTreatment(treatment); |
| } |
| if (nextId != -1) { |
| fobBuilder.nextStep(nextId); |
| } |
| fobBuilder.fromApp(appId) |
| .withPriority(priority) |
| .withFlag(ForwardingObjective.Flag.VERSATILE); |
| |
| return add ? fobBuilder.add() : fobBuilder.remove(); |
| } |
| |
| |
| static TrafficSelector.Builder buildBaseSelectorBuilder(PortNumber inPort, |
| MacAddress srcMac, |
| MacAddress dstMac, |
| VlanId vlanId) { |
| TrafficSelector.Builder selectorBuilder = DefaultTrafficSelector.builder(); |
| if (inPort != null) { |
| selectorBuilder.matchInPort(inPort); |
| } |
| if (srcMac != null) { |
| selectorBuilder.matchEthSrc(srcMac); |
| } |
| if (dstMac != null) { |
| selectorBuilder.matchEthDst(dstMac); |
| } |
| if (vlanId != null) { |
| selectorBuilder.matchVlanId(vlanId); |
| } |
| return selectorBuilder; |
| } |
| |
| static TrafficSelector buildIPDstSelector(IpPrefix dstIp, |
| PortNumber inPort, |
| MacAddress srcMac, |
| MacAddress dstMac, |
| VlanId vlanId) { |
| TrafficSelector.Builder selector = buildBaseSelectorBuilder(inPort, srcMac, dstMac, vlanId); |
| if (dstIp.isIp4()) { |
| selector.matchEthType(TYPE_IPV4); |
| selector.matchIPDst(dstIp); |
| } else { |
| selector.matchEthType(TYPE_IPV6); |
| selector.matchIPv6Dst(dstIp); |
| } |
| return selector.build(); |
| } |
| |
| static TrafficSelector buildIPSrcSelector(IpPrefix srcIp, |
| PortNumber inPort, |
| MacAddress srcMac, |
| MacAddress dstMac, |
| VlanId vlanId) { |
| TrafficSelector.Builder selector = buildBaseSelectorBuilder(inPort, srcMac, dstMac, vlanId); |
| if (srcIp.isIp4()) { |
| selector.matchEthType(TYPE_IPV4); |
| selector.matchIPSrc(srcIp); |
| } else { |
| selector.matchEthType(TYPE_IPV6); |
| selector.matchIPv6Src(srcIp); |
| } |
| return selector.build(); |
| } |
| |
| static TrafficSelector buildArpSelector(PortNumber inPort, |
| VlanId vlanId, |
| Ip4Address arpSpa, |
| MacAddress srcMac) { |
| TrafficSelector.Builder selector = buildBaseSelectorBuilder(inPort, null, null, vlanId); |
| selector.matchEthType(TYPE_ARP); |
| if (arpSpa != null) { |
| selector.matchArpSpa(arpSpa); |
| } |
| if (srcMac != null) { |
| selector.matchEthSrc(srcMac); |
| } |
| return selector.build(); |
| } |
| |
| static TrafficSelector buildNdpSelector(PortNumber inPort, |
| VlanId vlanId, |
| IpPrefix srcIp, |
| byte subProto, |
| MacAddress srcMac) { |
| TrafficSelector.Builder selector = buildBaseSelectorBuilder(inPort, null, null, vlanId); |
| selector.matchEthType(TYPE_IPV6) |
| .matchIPProtocol(PROTOCOL_ICMP6) |
| .matchIcmpv6Type(subProto); |
| if (srcIp != null) { |
| selector.matchIPv6Src(srcIp); |
| } |
| if (srcMac != null) { |
| selector.matchEthSrc(srcMac); |
| } |
| return selector.build(); |
| } |
| |
| private int getPriorityFromPrefix(IpPrefix prefix) { |
| return (prefix.isIp4()) ? |
| IPV4_PRIORITY * prefix.prefixLength() + MIN_IP_PRIORITY : |
| IPV6_PRIORITY * prefix.prefixLength() + MIN_IP_PRIORITY; |
| } |
| |
| private String operation(boolean install) { |
| return install ? "Installing" : "Removing"; |
| } |
| |
| |
| /** |
| * Listener for network config events. |
| */ |
| private class InternalNetworkConfigListener implements NetworkConfigListener { |
| |
| @Override |
| public void event(NetworkConfigEvent event) { |
| if (event.configClass().equals(RoutingService.ROUTER_CONFIG_CLASS)) { |
| switch (event.type()) { |
| case CONFIG_ADDED: |
| case CONFIG_UPDATED: |
| processRouterConfig(); |
| break; |
| case CONFIG_REGISTERED: |
| break; |
| case CONFIG_UNREGISTERED: |
| break; |
| case CONFIG_REMOVED: |
| removeRouterConfig(); |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| } |
| |
| /** |
| * Listener for host events. |
| */ |
| private class InternalHostListener implements HostListener { |
| |
| private Optional<Interface> getPeerInterface(Host peer) { |
| return interfaceService.getInterfacesByPort(peer.location()).stream() |
| .filter(intf -> interfaceManager.configuredInterfaces().isEmpty() |
| || interfaceManager.configuredInterfaces().contains(intf.name())) |
| .filter(intf -> peer.vlan().equals(intf.vlan())) |
| .findFirst(); |
| } |
| |
| private void peerAdded(HostEvent event) { |
| Host peer = event.subject(); |
| if (interfaceManager == null) { |
| return; |
| } |
| |
| Optional<Interface> peerIntf = getPeerInterface(peer); |
| if (!peerIntf.isPresent()) { |
| log.debug("Adding peer {}/{} on {} but the interface is not configured", |
| peer.mac(), peer.vlan(), peer.location()); |
| return; |
| } |
| |
| // Generate L3 Unicast groups and store it in the map |
| int toRouterL3Unicast = createPeerGroup(peer.mac(), peerIntf.get().mac(), |
| peer.vlan(), peer.location().deviceId(), peerIntf.get().connectPoint().port()); |
| int toPeerL3Unicast = createPeerGroup(peerIntf.get().mac(), peer.mac(), |
| peer.vlan(), peer.location().deviceId(), peer.location().port()); |
| peerNextId.put(peer, ImmutableSortedSet.of(toRouterL3Unicast, toPeerL3Unicast)); |
| |
| // From peer to router |
| peerIntf.get().ipAddresses().forEach(routerIp -> { |
| flowObjectiveService.forward(peer.location().deviceId(), |
| createPeerObjBuilder(toRouterL3Unicast, routerIp.ipAddress().toIpPrefix()).add()); |
| }); |
| |
| // From router to peer |
| peer.ipAddresses().forEach(peerIp -> { |
| flowObjectiveService.forward(peer.location().deviceId(), |
| createPeerObjBuilder(toPeerL3Unicast, peerIp.toIpPrefix()).add()); |
| }); |
| } |
| |
| private void peerRemoved(HostEvent event) { |
| Host peer = event.subject(); |
| Optional<Interface> peerIntf = getPeerInterface(peer); |
| if (!peerIntf.isPresent()) { |
| log.debug("Removing peer {}/{} on {} but the interface is not configured", |
| peer.mac(), peer.vlan(), peer.location()); |
| return; |
| } |
| |
| checkState(peerNextId.get(peer) != null, |
| "Peer nextId should not be null"); |
| checkState(peerNextId.get(peer).size() == 2, |
| "Wrong nextId associated with the peer"); |
| Iterator<Integer> iter = peerNextId.get(peer).iterator(); |
| int toRouterL3Unicast = iter.next(); |
| int toPeerL3Unicast = iter.next(); |
| |
| // From peer to router |
| peerIntf.get().ipAddresses().forEach(routerIp -> { |
| flowObjectiveService.forward(peer.location().deviceId(), |
| createPeerObjBuilder(toRouterL3Unicast, routerIp.ipAddress().toIpPrefix()).remove()); |
| }); |
| |
| // From router to peer |
| peer.ipAddresses().forEach(peerIp -> { |
| flowObjectiveService.forward(peer.location().deviceId(), |
| createPeerObjBuilder(toPeerL3Unicast, peerIp.toIpPrefix()).remove()); |
| }); |
| } |
| |
| private ForwardingObjective.Builder createPeerObjBuilder( |
| int nextId, IpPrefix ipAddresses) { |
| TrafficSelector selector = buildIPDstSelector(ipAddresses, null, null, null, null); |
| DefaultForwardingObjective.Builder builder = |
| DefaultForwardingObjective.builder() |
| .withSelector(selector) |
| .fromApp(appId) |
| .withPriority(getPriorityFromPrefix(ipAddresses)) |
| .withFlag(ForwardingObjective.Flag.SPECIFIC); |
| if (nextId != -1) { |
| builder.nextStep(nextId); |
| } |
| return builder; |
| } |
| |
| private int createPeerGroup(MacAddress srcMac, MacAddress dstMac, |
| VlanId vlanId, DeviceId deviceId, PortNumber port) { |
| int nextId = flowObjectiveService.allocateNextId(); |
| NextObjective.Builder nextObjBuilder = DefaultNextObjective.builder() |
| .withId(nextId) |
| .withType(NextObjective.Type.SIMPLE) |
| .fromApp(appId); |
| |
| TrafficTreatment.Builder ttBuilder = DefaultTrafficTreatment.builder(); |
| ttBuilder.setEthSrc(srcMac); |
| ttBuilder.setEthDst(dstMac); |
| ttBuilder.setOutput(port); |
| nextObjBuilder.addTreatment(ttBuilder.build()); |
| |
| TrafficSelector.Builder metabuilder = DefaultTrafficSelector.builder(); |
| VlanId matchVlanId = (vlanId.equals(VlanId.NONE)) ? |
| VlanId.vlanId(SingleSwitchFibInstaller.ASSIGNED_VLAN) : |
| vlanId; |
| metabuilder.matchVlanId(matchVlanId); |
| nextObjBuilder.withMeta(metabuilder.build()); |
| |
| flowObjectiveService.next(deviceId, nextObjBuilder.add()); |
| return nextId; |
| } |
| |
| @Override |
| public void event(HostEvent event) { |
| DeviceId deviceId = event.subject().location().deviceId(); |
| if (!mastershipService.isLocalMaster(deviceId)) { |
| return; |
| } |
| switch (event.type()) { |
| case HOST_ADDED: |
| peerAdded(event); |
| break; |
| case HOST_MOVED: |
| //TODO We assume BGP peer does not move for now |
| break; |
| case HOST_REMOVED: |
| peerRemoved(event); |
| break; |
| case HOST_UPDATED: |
| //FIXME We assume BGP peer does not change IP for now |
| // but we can discover new address. |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| |
| } |
| |