| /* |
| * Copyright 2017-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.dhcprelay; |
| |
| import com.google.common.collect.HashMultimap; |
| import com.google.common.collect.Lists; |
| import com.google.common.collect.Multimap; |
| import org.apache.felix.scr.annotations.Activate; |
| import org.apache.felix.scr.annotations.Deactivate; |
| import com.google.common.collect.Sets; |
| import com.google.common.collect.ImmutableSet; |
| import org.apache.felix.scr.annotations.Component; |
| import org.apache.felix.scr.annotations.Property; |
| import org.apache.felix.scr.annotations.Reference; |
| import org.apache.felix.scr.annotations.ReferenceCardinality; |
| import org.apache.felix.scr.annotations.Service; |
| import org.onlab.packet.BasePacket; |
| import org.onlab.packet.DHCP6; |
| import org.onlab.packet.IPv6; |
| import org.onlab.packet.Ethernet; |
| import org.onlab.packet.Ip6Address; |
| import org.onlab.packet.IpAddress; |
| import org.onlab.packet.IpPrefix; |
| import org.onlab.packet.MacAddress; |
| import org.onlab.packet.TpPort; |
| import org.onlab.packet.UDP; |
| import org.onlab.packet.VlanId; |
| import org.onlab.packet.dhcp.Dhcp6ClientDataOption; |
| import org.onlab.packet.dhcp.Dhcp6LeaseQueryOption; |
| import org.onlab.packet.dhcp.Dhcp6RelayOption; |
| import org.onlab.packet.dhcp.Dhcp6InterfaceIdOption; |
| import org.onlab.packet.dhcp.Dhcp6Option; |
| import org.onlab.packet.dhcp.Dhcp6IaNaOption; |
| import org.onlab.packet.dhcp.Dhcp6IaTaOption; |
| import org.onlab.packet.dhcp.Dhcp6IaPdOption; |
| import org.onlab.packet.dhcp.Dhcp6IaAddressOption; |
| import org.onlab.packet.dhcp.Dhcp6IaPrefixOption; |
| import org.onlab.packet.dhcp.Dhcp6ClientIdOption; |
| import org.onlab.packet.dhcp.Dhcp6Duid; |
| import org.onlab.packet.DHCP6.MsgType; |
| import org.onlab.util.HexString; |
| import org.onosproject.core.ApplicationId; |
| import org.onosproject.core.CoreService; |
| import org.onosproject.dhcprelay.api.DhcpHandler; |
| import org.onosproject.dhcprelay.api.DhcpServerInfo; |
| import org.onosproject.dhcprelay.config.IgnoreDhcpConfig; |
| import org.onosproject.dhcprelay.store.DhcpRelayStore; |
| import org.onosproject.dhcprelay.store.DhcpRecord; |
| import org.onosproject.dhcprelay.store.DhcpFpmPrefixStore; |
| import org.onosproject.dhcprelay.store.DhcpRelayCounters; |
| import org.onosproject.dhcprelay.store.DhcpRelayCountersStore; |
| import org.onosproject.net.Device; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.routing.fpm.api.FpmRecord; |
| import org.onosproject.net.behaviour.Pipeliner; |
| import org.onosproject.net.device.DeviceService; |
| import org.onosproject.net.flow.DefaultTrafficSelector; |
| import org.onosproject.net.flow.TrafficSelector; |
| import org.onosproject.net.flowobjective.DefaultForwardingObjective; |
| import org.onosproject.net.flowobjective.FlowObjectiveService; |
| import org.onosproject.net.flowobjective.ForwardingObjective; |
| import org.onosproject.net.flowobjective.Objective; |
| import org.onosproject.net.flowobjective.ObjectiveContext; |
| import org.onosproject.net.flowobjective.ObjectiveError; |
| import org.onosproject.net.host.HostProvider; |
| import org.onosproject.net.host.HostProviderRegistry; |
| import org.onosproject.net.host.HostProviderService; |
| import org.onosproject.net.host.HostService; |
| import org.onosproject.net.host.DefaultHostDescription; |
| import org.onosproject.net.host.HostDescription; |
| import org.onosproject.net.host.InterfaceIpAddress; |
| import org.onosproject.net.host.HostListener; |
| import org.onosproject.net.host.HostEvent; |
| import org.onosproject.net.intf.Interface; |
| import org.onosproject.net.intf.InterfaceService; |
| import org.onosproject.net.packet.PacketPriority; |
| import org.onosproject.net.provider.ProviderId; |
| import org.onosproject.routeservice.Route; |
| import org.onosproject.routeservice.RouteStore; |
| import org.onosproject.dhcprelay.config.DhcpServerConfig; |
| import org.onosproject.net.ConnectPoint; |
| import org.onosproject.net.Host; |
| import org.onosproject.net.HostId; |
| import org.onosproject.net.HostLocation; |
| import org.onosproject.net.packet.DefaultOutboundPacket; |
| import org.onosproject.net.packet.OutboundPacket; |
| import org.onosproject.net.packet.PacketContext; |
| import org.onosproject.net.packet.PacketService; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.onosproject.net.flow.DefaultTrafficTreatment; |
| import org.onosproject.net.flow.TrafficTreatment; |
| import org.onosproject.dhcprelay.Dhcp6HandlerUtil.InternalPacket; |
| import java.nio.ByteBuffer; |
| import java.util.List; |
| import java.util.Collection; |
| import java.util.Optional; |
| import java.util.Set; |
| import java.util.ArrayList; |
| import java.util.concurrent.atomic.AtomicInteger; |
| import static com.google.common.base.Preconditions.checkNotNull; |
| import static com.google.common.base.Preconditions.checkState; |
| import static org.onosproject.net.flowobjective.Objective.Operation.ADD; |
| import static org.onosproject.net.flowobjective.Objective.Operation.REMOVE; |
| import java.util.concurrent.Semaphore; |
| |
| |
| @Component |
| @Service |
| @Property(name = "version", value = "6") |
| public class Dhcp6HandlerImpl implements DhcpHandler, HostProvider { |
| public static final String DHCP_V6_RELAY_APP = "org.onosproject.Dhcp6HandlerImpl"; |
| public static final ProviderId PROVIDER_ID = new ProviderId("dhcp6", DHCP_V6_RELAY_APP); |
| private static final int IGNORE_CONTROL_PRIORITY = PacketPriority.CONTROL.priorityValue() + 1000; |
| private String gCount = "global"; |
| private static final TrafficSelector CLIENT_SERVER_SELECTOR = DefaultTrafficSelector.builder() |
| .matchEthType(Ethernet.TYPE_IPV6) |
| .matchIPProtocol(IPv6.PROTOCOL_UDP) |
| .matchIPv6Src(IpPrefix.IPV6_LINK_LOCAL_PREFIX) |
| .matchIPv6Dst(Ip6Address.ALL_DHCP_RELAY_AGENTS_AND_SERVERS.toIpPrefix()) |
| .matchUdpSrc(TpPort.tpPort(UDP.DHCP_V6_CLIENT_PORT)) |
| .matchUdpDst(TpPort.tpPort(UDP.DHCP_V6_SERVER_PORT)) |
| .build(); |
| private static final TrafficSelector SERVER_RELAY_SELECTOR = DefaultTrafficSelector.builder() |
| .matchEthType(Ethernet.TYPE_IPV6) |
| .matchIPProtocol(IPv6.PROTOCOL_UDP) |
| .matchUdpSrc(TpPort.tpPort(UDP.DHCP_V6_SERVER_PORT)) |
| .matchUdpDst(TpPort.tpPort(UDP.DHCP_V6_SERVER_PORT)) |
| .build(); |
| // lease query reply is from server to client (no relay in between) - so we need to |
| // catch that scenario also .. |
| private static final TrafficSelector LEASE_QUERY_RESPONSE_SELECTOR = DefaultTrafficSelector.builder() |
| .matchEthType(Ethernet.TYPE_IPV6) |
| .matchIPProtocol(IPv6.PROTOCOL_UDP) |
| .matchUdpSrc(TpPort.tpPort(UDP.DHCP_V6_SERVER_PORT)) |
| .matchUdpDst(TpPort.tpPort(UDP.DHCP_V6_CLIENT_PORT)) |
| .build(); |
| static final Set<TrafficSelector> DHCP_SELECTORS = ImmutableSet.of( |
| CLIENT_SERVER_SELECTOR, |
| SERVER_RELAY_SELECTOR, |
| LEASE_QUERY_RESPONSE_SELECTOR |
| ); |
| private static Logger log = LoggerFactory.getLogger(Dhcp6HandlerImpl.class); |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected DhcpRelayStore dhcpRelayStore; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected DhcpRelayCountersStore dhcpRelayCountersStore; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected PacketService packetService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected RouteStore routeStore; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected InterfaceService interfaceService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected HostService hostService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected HostProviderRegistry providerRegistry; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected CoreService coreService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected DhcpFpmPrefixStore dhcpFpmPrefixStore; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected DeviceService deviceService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected FlowObjectiveService flowObjectiveService; |
| |
| protected HostProviderService providerService; |
| protected ApplicationId appId; |
| protected Multimap<DeviceId, VlanId> ignoredVlans = HashMultimap.create(); |
| private InternalHostListener hostListener = new InternalHostListener(); |
| private Boolean dhcpFpmEnabled = false; |
| private Dhcp6HandlerUtil dhcp6HandlerUtil = new Dhcp6HandlerUtil(); |
| private List<DhcpServerInfo> defaultServerInfoList = Lists.newArrayList(); |
| private List<DhcpServerInfo> indirectServerInfoList = Lists.newArrayList(); |
| private class IpAddressInfo { |
| Ip6Address ip6Address; |
| long prefTime; |
| } |
| private class PdPrefixInfo { |
| IpPrefix pdPrefix; |
| long prefTime; |
| } |
| protected int dhcp6PollInterval = 24 * 3600; // 24 hr period |
| |
| // max 1 thread |
| static Semaphore recordSemaphore = new Semaphore(1); |
| |
| // CLIENT message types |
| public static final Set<Byte> MSG_TYPE_FROM_CLIENT = |
| ImmutableSet.of(DHCP6.MsgType.SOLICIT.value(), |
| DHCP6.MsgType.REQUEST.value(), |
| DHCP6.MsgType.REBIND.value(), |
| DHCP6.MsgType.RENEW.value(), |
| DHCP6.MsgType.RELEASE.value(), |
| DHCP6.MsgType.DECLINE.value(), |
| DHCP6.MsgType.CONFIRM.value(), |
| DHCP6.MsgType.RELAY_FORW.value(), |
| DHCP6.MsgType.LEASEQUERY.value()); |
| // SERVER message types |
| public static final Set<Byte> MSG_TYPE_FROM_SERVER = |
| ImmutableSet.of(DHCP6.MsgType.RELAY_REPL.value(), |
| DHCP6.MsgType.LEASEQUERY_REPLY.value()); |
| |
| @Activate |
| protected void activate() { |
| appId = coreService.registerApplication(DHCP_V6_RELAY_APP); |
| providerService = providerRegistry.register(this); |
| hostService.addListener(hostListener); |
| } |
| |
| @Deactivate |
| protected void deactivate() { |
| providerRegistry.unregister(this); |
| hostService.removeListener(hostListener); |
| defaultServerInfoList.forEach(this::stopMonitoringIps); |
| defaultServerInfoList.clear(); |
| indirectServerInfoList.forEach(this::stopMonitoringIps); |
| indirectServerInfoList.clear(); |
| } |
| |
| private void stopMonitoringIps(DhcpServerInfo serverInfo) { |
| serverInfo.getDhcpGatewayIp6().ifPresent(gatewayIp -> { |
| hostService.stopMonitoringIp(gatewayIp); |
| }); |
| serverInfo.getDhcpServerIp6().ifPresent(serverIp -> { |
| hostService.stopMonitoringIp(serverIp); |
| }); |
| } |
| |
| @Override |
| public List<DhcpServerInfo> getDefaultDhcpServerInfoList() { |
| return defaultServerInfoList; |
| } |
| |
| @Override |
| public List<DhcpServerInfo> getIndirectDhcpServerInfoList() { |
| return indirectServerInfoList; |
| } |
| |
| @Override |
| public void updateIgnoreVlanConfig(IgnoreDhcpConfig config) { |
| if (config == null) { |
| ignoredVlans.forEach(((deviceId, vlanId) -> { |
| processIgnoreVlanRule(deviceId, vlanId, REMOVE); |
| })); |
| return; |
| } |
| config.ignoredVlans().forEach((deviceId, vlanId) -> { |
| if (ignoredVlans.get(deviceId).contains(vlanId)) { |
| // don't need to process if it already ignored |
| return; |
| } |
| processIgnoreVlanRule(deviceId, vlanId, ADD); |
| }); |
| ignoredVlans.forEach((deviceId, vlanId) -> { |
| if (!config.ignoredVlans().get(deviceId).contains(vlanId)) { |
| // not contains in new config, remove it |
| processIgnoreVlanRule(deviceId, vlanId, REMOVE); |
| } |
| }); |
| } |
| |
| @Override |
| public void removeIgnoreVlanState(IgnoreDhcpConfig config) { |
| if (config == null) { |
| ignoredVlans.clear(); |
| return; |
| } |
| config.ignoredVlans().forEach((deviceId, vlanId) -> { |
| ignoredVlans.remove(deviceId, vlanId); |
| }); |
| } |
| |
| public DhcpRecord getDhcpRelayRecordFor(Ip6Address clientAddress) { |
| |
| Collection<DhcpRecord> records = dhcpRelayStore.getDhcpRecords(); |
| DhcpRecord dr = null; |
| for (DhcpRecord e:records) { |
| if (e.ip6Address().isPresent()) { |
| if (e.ip6Address().get().equals(clientAddress)) { |
| dr = e; |
| break; |
| } |
| } |
| } |
| return dr; |
| } |
| |
| public MacAddress findNextHopMacForIp6FromRelayStore(Ip6Address clientAddress, |
| MacAddress clientMacAddress, VlanId vlanID) { |
| |
| DhcpRecord dr = getDhcpRelayRecordFor(clientAddress); |
| |
| if (dr != null) { |
| Optional<MacAddress> nextHopTempMac = dr.nextHopTemp(); |
| if (nextHopTempMac.isPresent()) { |
| log.info("findNextHopForIp6FromRelayStore " + clientAddress + " got mac " + nextHopTempMac.toString()); |
| return nextHopTempMac.get(); |
| } |
| } else { |
| log.warn("findNextHopMacForIp6FromRelayStore could NOT find next hop for " + clientAddress); |
| return null; |
| } |
| return null; |
| } |
| |
| public Ip6Address findNextHopIp6FromRelayStore(Ip6Address clientAddress) { |
| |
| DhcpRecord dr = getDhcpRelayRecordFor(clientAddress); |
| if (dr != null) { |
| Optional<MacAddress> nextHopMac = dr.nextHop(); |
| if (nextHopMac.isPresent()) { |
| // find the local ip6 from the host store |
| HostId gwHostId = HostId.hostId(nextHopMac.get(), dr.vlanId()); |
| Host gwHost = hostService.getHost(gwHostId); |
| if (gwHost == null) { |
| log.warn("Can't find next hop host ID {}", gwHostId); |
| return null; |
| } |
| Ip6Address nextHopIp = gwHost.ipAddresses() |
| .stream() |
| .filter(IpAddress::isIp6) |
| .filter(IpAddress::isLinkLocal) |
| .map(IpAddress::getIp6Address) |
| .findFirst() |
| .orElse(null); |
| |
| log.info("findNextHopIp6FromRelayStore " + clientAddress + " got mac " + |
| nextHopMac.toString() + " ip6 " + nextHopIp); |
| return nextHopIp; |
| } |
| } else { |
| log.warn("findNextHopIp6FromRelayStore could NOT find next hop for " + clientAddress); |
| return null; |
| } |
| return null; |
| } |
| |
| private void setPotentialNextHopForIp6InRelayStore(Ip6Address clientAddress, |
| VlanId vlanId, MacAddress nh) { |
| DhcpRecord dr = getDhcpRelayRecordFor(clientAddress); |
| if (dr != null) { |
| dr.nextHopTemp(nh); |
| log.debug("LQ6 potential NH mac " + nh.toString() + " UPDATED in RelayRecord client " + clientAddress); |
| } else { |
| log.warn("LQ6 potential NH mac" + nh.toString() + |
| " NOT FOUND in RelayRecord for client - LQ rejected" + clientAddress); |
| } |
| } |
| |
| public void handleLeaseQuery6ReplyMsg(PacketContext context, DHCP6 dhcp6Payload) { |
| ConnectPoint inPort = context.inPacket().receivedFrom(); |
| log.info("Got LQV6-REPLY on port {}", inPort); |
| List<Dhcp6Option> lopt = dhcp6Payload.getOptions(); |
| log.info("Options list: {}", lopt); |
| // find out if this lease is known is |
| Dhcp6ClientDataOption clientDataOption = dhcp6Payload.getOptions() |
| .stream() |
| .filter(opt -> opt instanceof Dhcp6ClientDataOption) |
| .map(pld -> (Dhcp6ClientDataOption) pld) |
| .findFirst() |
| .orElse(null); |
| |
| if (clientDataOption == null) { |
| log.warn("clientDataOption option is not present, " + |
| "lease is UNKNOWN - not adding any new route..."); |
| } else { |
| Dhcp6IaAddressOption aiAddressOption = clientDataOption.getOptions() |
| .stream() |
| .filter(opt -> opt instanceof Dhcp6IaAddressOption) |
| .map(pld -> (Dhcp6IaAddressOption) pld) |
| .findFirst() |
| .orElse(null); |
| |
| Dhcp6ClientIdOption clientIdOption = clientDataOption.getOptions() |
| .stream() |
| .filter(opt -> opt instanceof Dhcp6ClientIdOption) |
| .map(pld -> (Dhcp6ClientIdOption) pld) |
| .findFirst() |
| .orElse(null); |
| |
| if (aiAddressOption == null) { |
| log.warn("clientDataOption from DHCP server does not " + |
| "contains Dhcp6IaAddressOption for the client - giving up..."); |
| } else { |
| Ip6Address clientAddress = aiAddressOption.getIp6Address(); |
| MacAddress clientMacAddress = MacAddress.valueOf(clientIdOption.getDuid().getLinkLayerAddress()); |
| Ethernet packet = context.inPacket().parsed(); |
| VlanId vlanId = VlanId.vlanId(packet.getVlanID()); |
| MacAddress potentialNextHopMac = |
| findNextHopMacForIp6FromRelayStore(clientAddress, clientMacAddress, vlanId); |
| |
| if (potentialNextHopMac == null) { |
| log.warn("Can't find next hop host mac for client {} mac:{}/{}", |
| clientAddress, clientMacAddress, vlanId); |
| return; |
| } else { |
| log.info("Next hop mac for {}/{}/{} is {}", clientAddress, |
| clientMacAddress, vlanId, potentialNextHopMac.toString()); |
| } |
| // search the next hop in the hosts store |
| HostId gwHostId = HostId.hostId(potentialNextHopMac, vlanId); |
| Host gwHost = hostService.getHost(gwHostId); |
| if (gwHost == null) { |
| log.warn("Can't find next hop host ID {}", gwHostId); |
| return; |
| } |
| Ip6Address nextHopIp = gwHost.ipAddresses() |
| .stream() |
| .filter(IpAddress::isIp6) |
| .filter(IpAddress::isLinkLocal) |
| .map(IpAddress::getIp6Address) |
| .findFirst() |
| .orElse(null); |
| if (nextHopIp == null) { |
| log.warn("Can't find IP6 address of next hop {}", gwHost); |
| return; |
| } |
| log.info("client " + clientAddress + " is known !"); |
| Route routeForIP6 = new Route(Route.Source.STATIC, clientAddress.toIpPrefix(), nextHopIp); |
| log.debug("updating route of Client for indirectly connected."); |
| log.debug("client ip: " + clientAddress + ", next hop ip6: " + nextHopIp); |
| routeStore.updateRoute(routeForIP6); |
| } |
| } |
| } |
| |
| @Override |
| public void processDhcpPacket(PacketContext context, BasePacket payload) { |
| checkNotNull(payload, "DHCP6 payload can't be null"); |
| checkState(payload instanceof DHCP6, "Payload is not a DHCP6"); |
| DHCP6 dhcp6Payload = (DHCP6) payload; |
| Ethernet receivedPacket = context.inPacket().parsed(); |
| |
| if (!configured()) { |
| log.warn("Missing DHCP6 relay server config. " + |
| "Abort packet processing dhcp6 payload {}", dhcp6Payload); |
| return; |
| } |
| byte msgTypeVal = dhcp6Payload.getMsgType(); |
| MsgType msgType = DHCP6.MsgType.getType(msgTypeVal); |
| log.debug("msgType is {}", msgType); |
| |
| ConnectPoint inPort = context.inPacket().receivedFrom(); |
| |
| if (inPort == null) { |
| log.warn("incomming ConnectPoint is null"); |
| } |
| Set<Interface> receivingInterfaces = interfaceService.getInterfacesByPort(inPort); |
| //ignore the packets if dhcp client interface is not configured on onos. |
| if (receivingInterfaces.isEmpty()) { |
| log.warn("Virtual interface is not configured on {}", inPort); |
| return; |
| } |
| |
| if (msgTypeVal == DHCP6.MsgType.LEASEQUERY.value()) { |
| List<InternalPacket> ethernetClientPacket = |
| processLQ6PacketFromClient(context, receivedPacket, receivingInterfaces, dhcp6Payload); |
| for (InternalPacket internalPacket : ethernetClientPacket) { |
| forwardPacket(internalPacket); |
| } |
| } else if (msgTypeVal == DHCP6.MsgType.LEASEQUERY_REPLY.value()) { |
| |
| IPv6 clientIpv6 = (IPv6) receivedPacket.getPayload(); |
| UDP clientUdp = (UDP) clientIpv6.getPayload(); |
| DHCP6 clientDhcp6 = (DHCP6) clientUdp.getPayload(); |
| Interface serverInterface = dhcp6HandlerUtil.directlyConnected(clientDhcp6) ? |
| getServerInterface() : getIndirectServerInterface(); |
| InternalPacket ethernetPacketReply = |
| dhcp6HandlerUtil.processLQ6PacketFromServer( |
| defaultServerInfoList, indirectServerInfoList, |
| serverInterface, interfaceService, |
| hostService, |
| context, receivedPacket, receivingInterfaces); |
| if (ethernetPacketReply != null) { |
| forwardPacket(ethernetPacketReply); |
| } |
| handleLeaseQuery6ReplyMsg(context, dhcp6Payload); |
| } else { |
| if (MSG_TYPE_FROM_CLIENT.contains(msgTypeVal)) { |
| |
| List<InternalPacket> ethernetClientPacket = |
| processDhcp6PacketFromClient(context, receivedPacket, receivingInterfaces); |
| for (InternalPacket internalPacket : ethernetClientPacket) { |
| forwardPacket(internalPacket); |
| } |
| } else if (MSG_TYPE_FROM_SERVER.contains(msgTypeVal)) { |
| log.debug("calling processDhcp6PacketFromServer with RELAY_REPL {}", msgTypeVal); |
| InternalPacket ethernetPacketReply = |
| processDhcp6PacketFromServer(context, receivedPacket, receivingInterfaces); |
| if (ethernetPacketReply != null) { |
| forwardPacket(ethernetPacketReply); |
| } |
| } else { |
| log.warn("Not so fast, packet type {} not supported yet", msgTypeVal); |
| } |
| } |
| } |
| |
| /** |
| * Checks if this app has been configured. |
| * |
| * @return true if all information we need have been initialized |
| */ |
| public boolean configured() { |
| return !defaultServerInfoList.isEmpty(); |
| } |
| |
| @Override |
| public ProviderId id() { |
| return PROVIDER_ID; |
| } |
| |
| @Override |
| public void triggerProbe(Host host) { |
| // Do nothing here |
| } |
| |
| //forward the packet to ConnectPoint where the DHCP server is attached. |
| private void forwardPacket(InternalPacket packet) { |
| //send Packetout to dhcp server connectpoint. |
| if (packet.destLocation != null) { |
| TrafficTreatment t = DefaultTrafficTreatment.builder() |
| .setOutput(packet.destLocation.port()).build(); |
| OutboundPacket o = new DefaultOutboundPacket( |
| packet.destLocation.deviceId(), t, ByteBuffer.wrap(packet.packet.serialize())); |
| if (log.isTraceEnabled()) { |
| log.trace("Relaying packet to destination {}", packet.destLocation); |
| } |
| packetService.emit(o); |
| } // if |
| } |
| |
| /** |
| * extract from dhcp6 packet client ipv6 address of given by dhcp server. |
| * |
| * @param dhcp6 the dhcp6 packet |
| * @return IpAddressInfo IpAddressInfo given by dhcp server, or null if not exists |
| */ |
| private IpAddressInfo extractIpAddress(DHCP6 dhcp6) { |
| IpAddressInfo ipInfo = new IpAddressInfo(); |
| |
| log.debug("extractIpAddress enters dhcp6 {}.", dhcp6); |
| // Extract IPv6 address from IA NA ot IA TA option |
| Optional<Dhcp6IaNaOption> iaNaOption = dhcp6.getOptions() |
| .stream() |
| .filter(opt -> opt instanceof Dhcp6IaNaOption) |
| .map(opt -> (Dhcp6IaNaOption) opt) |
| .findFirst(); |
| Optional<Dhcp6IaTaOption> iaTaOption = dhcp6.getOptions() |
| .stream() |
| .filter(opt -> opt instanceof Dhcp6IaTaOption) |
| .map(opt -> (Dhcp6IaTaOption) opt) |
| .findFirst(); |
| Optional<Dhcp6IaAddressOption> iaAddressOption; |
| if (iaNaOption.isPresent()) { |
| log.debug("Found IPv6 address from iaNaOption {}", iaNaOption); |
| |
| iaAddressOption = iaNaOption.get().getOptions().stream() |
| .filter(opt -> opt instanceof Dhcp6IaAddressOption) |
| .map(opt -> (Dhcp6IaAddressOption) opt) |
| .findFirst(); |
| } else if (iaTaOption.isPresent()) { |
| log.debug("Found IPv6 address from iaTaOption {}", iaTaOption); |
| |
| iaAddressOption = iaTaOption.get().getOptions().stream() |
| .filter(opt -> opt instanceof Dhcp6IaAddressOption) |
| .map(opt -> (Dhcp6IaAddressOption) opt) |
| .findFirst(); |
| } else { |
| log.info("No IPv6 address found from iaTaOption {}", iaTaOption); |
| iaAddressOption = Optional.empty(); |
| } |
| if (iaAddressOption.isPresent()) { |
| ipInfo.ip6Address = iaAddressOption.get().getIp6Address(); |
| ipInfo.prefTime = iaAddressOption.get().getPreferredLifetime(); |
| log.debug("Found IPv6 address from iaAddressOption {}", iaAddressOption); |
| } else { |
| log.debug("Can't find IPv6 address from DHCPv6 {}", dhcp6); |
| return null; |
| } |
| return ipInfo; |
| } |
| |
| /** |
| * extract from dhcp6 packet Prefix prefix provided by dhcp server. |
| * |
| * @param dhcp6 the dhcp6 payload |
| * @return IpPrefix Prefix Delegation prefix, or null if not exists. |
| */ |
| private PdPrefixInfo extractPrefix(DHCP6 dhcp6) { |
| log.debug("extractPrefix enters {}", dhcp6); |
| |
| // extract prefix |
| PdPrefixInfo pdPrefixInfo = new PdPrefixInfo(); |
| |
| Ip6Address prefixAddress = null; |
| |
| // Extract IPv6 prefix from IA PD option |
| Optional<Dhcp6IaPdOption> iaPdOption = dhcp6.getOptions() |
| .stream() |
| .filter(opt -> opt instanceof Dhcp6IaPdOption) |
| .map(opt -> (Dhcp6IaPdOption) opt) |
| .findFirst(); |
| |
| Optional<Dhcp6IaPrefixOption> iaPrefixOption; |
| if (iaPdOption.isPresent()) { |
| log.debug("IA_PD option found {}", iaPdOption); |
| |
| iaPrefixOption = iaPdOption.get().getOptions().stream() |
| .filter(opt -> opt instanceof Dhcp6IaPrefixOption) |
| .map(opt -> (Dhcp6IaPrefixOption) opt) |
| .findFirst(); |
| } else { |
| log.debug("IA_PD option NOT found"); |
| |
| iaPrefixOption = Optional.empty(); |
| } |
| if (iaPrefixOption.isPresent()) { |
| log.debug("IAPrefix Option within IA_PD option found {}", iaPrefixOption); |
| |
| prefixAddress = iaPrefixOption.get().getIp6Prefix(); |
| int prefixLen = (int) iaPrefixOption.get().getPrefixLength(); |
| log.debug("Prefix length is {} bits", prefixLen); |
| pdPrefixInfo.pdPrefix = IpPrefix.valueOf(prefixAddress, prefixLen); |
| pdPrefixInfo.prefTime = iaPrefixOption.get().getPreferredLifetime(); |
| } else { |
| log.debug("Can't find IPv6 prefix from DHCPv6 {}", dhcp6); |
| return null; |
| } |
| return pdPrefixInfo; |
| } |
| |
| /** |
| * extract from dhcp6 packet ClientIdOption. |
| * |
| * @param directConnFlag directly connected host |
| * @param dhcp6Payload the dhcp6 payload |
| * @return Dhcp6ClientIdOption clientIdOption, or null if not exists. |
| */ |
| private Dhcp6ClientIdOption extractClinedId(Boolean directConnFlag, DHCP6 dhcp6Payload) { |
| Dhcp6ClientIdOption clientIdOption; |
| |
| if (directConnFlag) { |
| clientIdOption = dhcp6Payload.getOptions() |
| .stream() |
| .filter(opt -> opt instanceof Dhcp6ClientIdOption) |
| .map(opt -> (Dhcp6ClientIdOption) opt) |
| .findFirst() |
| .orElse(null); |
| } else { |
| DHCP6 leafDhcp = dhcp6HandlerUtil.getDhcp6Leaf(dhcp6Payload); |
| clientIdOption = leafDhcp.getOptions() |
| .stream() |
| .filter(opt -> opt instanceof Dhcp6ClientIdOption) |
| .map(opt -> (Dhcp6ClientIdOption) opt) |
| .findFirst() |
| .orElse(null); |
| } |
| |
| return clientIdOption; |
| } |
| |
| /** |
| * remove host or route and update dhcp relay record attributes. |
| * |
| * @param directConnFlag flag to show that packet is from directly connected client |
| * @param location client side connect point |
| * @param dhcp6Packet the dhcp6 payload |
| * @param clientPacket client's ethernet packet |
| * @param clientIpv6 client's Ipv6 packet |
| * @param clientInterface client interfaces |
| */ |
| private void removeHostOrRoute(boolean directConnFlag, ConnectPoint location, |
| DHCP6 dhcp6Packet, |
| Ethernet clientPacket, IPv6 clientIpv6, |
| Interface clientInterface) { |
| log.debug("removeHostOrRoute enters {}", dhcp6Packet); |
| VlanId vlanId = clientInterface.vlan(); |
| MacAddress srcMac = clientPacket.getSourceMAC(); // could be gw or host |
| MacAddress leafClientMac; |
| byte leafMsgType; |
| log.debug("client mac {} client vlan {}", HexString.toHexString(srcMac.toBytes(), ":"), vlanId); |
| |
| Dhcp6ClientIdOption clientIdOption = extractClinedId(directConnFlag, dhcp6Packet); |
| if (clientIdOption != null) { |
| if ((clientIdOption.getDuid().getDuidType() == Dhcp6Duid.DuidType.DUID_LLT) || |
| (clientIdOption.getDuid().getDuidType() == Dhcp6Duid.DuidType.DUID_LL)) { |
| leafClientMac = MacAddress.valueOf(clientIdOption.getDuid().getLinkLayerAddress()); |
| } else { |
| log.warn("Link-Layer Address not supported in CLIENTID option. No DhcpRelay Record created."); |
| dhcpRelayCountersStore.incrementCounter(gCount, DhcpRelayCounters.NO_LINKLOCAL_FAIL); |
| return; |
| } |
| } else { |
| log.warn("CLIENTID option NOT found. Don't create DhcpRelay Record."); |
| dhcpRelayCountersStore.incrementCounter(gCount, DhcpRelayCounters.NO_CLIENTID_FAIL); |
| return; |
| } |
| |
| HostId leafHostId = HostId.hostId(leafClientMac, vlanId); |
| DhcpRecord record = dhcpRelayStore.getDhcpRecord(leafHostId).orElse(null); |
| if (record == null) { |
| record = new DhcpRecord(leafHostId); |
| } else { |
| record = record.clone(); |
| } |
| |
| Boolean isMsgRelease = dhcp6HandlerUtil.isDhcp6Release(dhcp6Packet); |
| IpAddressInfo ipInfo; |
| PdPrefixInfo pdInfo = null; |
| if (directConnFlag) { |
| // Add to host store if it is connected to network directly |
| ipInfo = extractIpAddress(dhcp6Packet); |
| if (ipInfo != null) { |
| if (isMsgRelease) { |
| HostId hostId = HostId.hostId(srcMac, vlanId); |
| log.debug("remove Host {} ip for directly connected.", hostId.toString()); |
| providerService.removeIpFromHost(hostId, ipInfo.ip6Address); |
| } |
| } else { |
| log.debug("ipAddress not found. Do not remove Host {} for directly connected.", |
| HostId.hostId(srcMac, vlanId).toString()); |
| } |
| leafMsgType = dhcp6Packet.getMsgType(); |
| } else { |
| // Remove from route store if it is not connected to network directly |
| // pick out the first link-local ip address |
| IpAddress nextHopIp = getFirstIpByHost(directConnFlag, srcMac, vlanId); |
| if (nextHopIp == null) { |
| log.warn("Can't find link-local IP address of gateway mac {} vlanId {}", srcMac, vlanId); |
| dhcpRelayCountersStore.incrementCounter(gCount, DhcpRelayCounters.NO_LINKLOCAL_GW); |
| return; |
| } |
| |
| DHCP6 leafDhcp = dhcp6HandlerUtil.getDhcp6Leaf(dhcp6Packet); |
| ipInfo = extractIpAddress(leafDhcp); |
| if (ipInfo == null) { |
| log.debug("ip is null"); |
| } else { |
| if (isMsgRelease) { |
| Route routeForIP = new Route(Route.Source.STATIC, ipInfo.ip6Address.toIpPrefix(), nextHopIp); |
| log.debug("removing route of 128 address for indirectly connected."); |
| log.debug("128 ip {}, nexthop {}", |
| HexString.toHexString(ipInfo.ip6Address.toOctets(), ":"), |
| HexString.toHexString(nextHopIp.toOctets(), ":")); |
| routeStore.removeRoute(routeForIP); |
| } |
| } |
| |
| pdInfo = extractPrefix(leafDhcp); |
| if (pdInfo == null) { |
| log.debug("ipPrefix is null "); |
| } else { |
| if (isMsgRelease) { |
| Route routeForPrefix = new Route(Route.Source.STATIC, pdInfo.pdPrefix, nextHopIp); |
| log.debug("removing route of PD for indirectly connected."); |
| log.debug("pd ip {}, nexthop {}", |
| HexString.toHexString(pdInfo.pdPrefix.address().toOctets(), ":"), |
| HexString.toHexString(nextHopIp.toOctets(), ":")); |
| |
| routeStore.removeRoute(routeForPrefix); |
| if (this.dhcpFpmEnabled) { |
| dhcpFpmPrefixStore.removeFpmRecord(pdInfo.pdPrefix); |
| } |
| } |
| } |
| leafMsgType = leafDhcp.getMsgType(); |
| } |
| |
| if (isMsgRelease) { |
| log.debug("DHCP6 RELEASE msg."); |
| if (record != null) { |
| if (ipInfo != null) { |
| log.debug("DhcpRelay Record ip6Address is set to null."); |
| record.ip6Address(null); |
| } |
| if (pdInfo != null) { |
| log.debug("DhcpRelay Record pdPrefix is set to null."); |
| } |
| |
| if (!record.ip6Address().isPresent() && !record.pdPrefix().isPresent()) { |
| log.warn("IP6 address and IP6 PD both are null. Remove record."); |
| // do not remove a record. Let timer task handler it. |
| //dhcpRelayStore.removeDhcpRecord(HostId.hostId(leafClientMac, vlanId)); |
| } |
| } |
| } |
| |
| if (record != null) { |
| record.getV6Counters().incrementCounter(dhcp6HandlerUtil.getMsgTypeStr(leafMsgType)); |
| record.addLocation(new HostLocation(location, System.currentTimeMillis())); |
| record.ip6Status(DHCP6.MsgType.getType(leafMsgType)); |
| record.setDirectlyConnected(directConnFlag); |
| if (!directConnFlag) { |
| // Update gateway mac address if the host is not directly connected |
| record.nextHop(srcMac); |
| } |
| record.updateLastSeen(); |
| } |
| dhcpRelayStore.updateDhcpRecord(leafHostId, record); |
| // TODO Use AtomicInteger for the counters |
| try { |
| recordSemaphore.acquire(); |
| try { |
| dhcpRelayCountersStore.incrementCounter(gCount, dhcp6HandlerUtil.getMsgTypeStr(leafMsgType)); |
| } finally { |
| // calling release() after a successful acquire() |
| recordSemaphore.release(); |
| } |
| } catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| } |
| } |
| |
| /** |
| * add host or route and update dhcp relay record. |
| * |
| * @param directConnFlag flag to show that packet is from directly connected client |
| * @param location client side connect point |
| * @param dhcp6Relay the dhcp6 payload |
| * @param embeddedDhcp6 the dhcp6 payload within relay |
| * @param srcMac client gw/host macAddress |
| * @param clientInterface client interface |
| * @param dhcpServerIp6Address DHCP server IP |
| */ |
| private void addHostOrRoute(boolean directConnFlag, ConnectPoint location, DHCP6 dhcp6Relay, |
| DHCP6 embeddedDhcp6, MacAddress srcMac, Interface clientInterface) { |
| log.debug("addHostOrRoute entered."); |
| VlanId vlanId = clientInterface.vlan(); |
| Boolean isMsgReply = dhcp6HandlerUtil.isDhcp6Reply(dhcp6Relay); |
| MacAddress leafClientMac; |
| Byte leafMsgType; |
| |
| Dhcp6ClientIdOption clientIdOption = extractClinedId(directConnFlag, embeddedDhcp6); |
| if (clientIdOption != null) { |
| log.debug("CLIENTID option found {}", clientIdOption); |
| if ((clientIdOption.getDuid().getDuidType() == Dhcp6Duid.DuidType.DUID_LLT) || |
| (clientIdOption.getDuid().getDuidType() == Dhcp6Duid.DuidType.DUID_LL)) { |
| leafClientMac = MacAddress.valueOf(clientIdOption.getDuid().getLinkLayerAddress()); |
| } else { |
| log.warn("Link-Layer Address not supported in CLIENTID option. No DhcpRelay Record created."); |
| dhcpRelayCountersStore.incrementCounter(gCount, DhcpRelayCounters.NO_LINKLOCAL_FAIL); |
| return; |
| } |
| } else { |
| log.warn("CLIENTID option NOT found. No DhcpRelay Record created."); |
| dhcpRelayCountersStore.incrementCounter(gCount, DhcpRelayCounters.NO_CLIENTID_FAIL); |
| return; |
| } |
| HostId leafHostId = HostId.hostId(leafClientMac, vlanId); |
| DhcpRecord record = dhcpRelayStore.getDhcpRecord(leafHostId).orElse(null); |
| if (record == null) { |
| record = new DhcpRecord(HostId.hostId(leafClientMac, vlanId)); |
| } else { |
| record = record.clone(); |
| } |
| |
| IpAddressInfo ipInfo; |
| PdPrefixInfo pdInfo = null; |
| if (directConnFlag) { |
| // Add to host store if it connect to network directly |
| ipInfo = extractIpAddress(embeddedDhcp6); |
| if (ipInfo != null) { |
| if (isMsgReply) { |
| Set<IpAddress> ips = Sets.newHashSet(ipInfo.ip6Address); |
| HostId hostId = HostId.hostId(srcMac, vlanId); |
| Host host = hostService.getHost(hostId); |
| HostLocation hostLocation = new HostLocation(clientInterface.connectPoint(), |
| System.currentTimeMillis()); |
| Set<HostLocation> hostLocations = Sets.newHashSet(hostLocation); |
| if (host != null) { |
| // Dual homing support: |
| // if host exists, use old locations and new location |
| hostLocations.addAll(host.locations()); |
| } |
| HostDescription desc = new DefaultHostDescription(srcMac, vlanId, hostLocations, ips, |
| false); |
| log.debug("adding Host for directly connected."); |
| log.debug("client mac {} client vlan {} hostlocation {}", |
| HexString.toHexString(srcMac.toBytes(), ":"), vlanId, hostLocation.toString()); |
| // Replace the ip when dhcp server give the host new ip address |
| providerService.hostDetected(hostId, desc, false); |
| } |
| } else { |
| log.warn("ipAddress not found. Do not add Host {} for directly connected.", |
| HostId.hostId(srcMac, vlanId).toString()); |
| } |
| leafMsgType = embeddedDhcp6.getMsgType(); |
| } else { |
| // Add to route store if it does not connect to network directly |
| // pick out the first link-local ip address |
| IpAddress nextHopIp = getFirstIpByHost(directConnFlag, srcMac, vlanId); |
| if (nextHopIp == null) { |
| log.warn("Can't find link-local IP address of gateway mac {} vlanId {}", srcMac, vlanId); |
| dhcpRelayCountersStore.incrementCounter(gCount, DhcpRelayCounters.NO_LINKLOCAL_GW); |
| return; |
| } |
| |
| DHCP6 leafDhcp = dhcp6HandlerUtil.getDhcp6Leaf(embeddedDhcp6); |
| ipInfo = extractIpAddress(leafDhcp); |
| if (ipInfo == null) { |
| log.debug("ip is null"); |
| } else { |
| if (isMsgReply) { |
| Route routeForIP = new Route(Route.Source.STATIC, ipInfo.ip6Address.toIpPrefix(), nextHopIp); |
| log.debug("adding Route of 128 address for indirectly connected."); |
| routeStore.updateRoute(routeForIP); |
| } |
| } |
| |
| pdInfo = extractPrefix(leafDhcp); |
| if (pdInfo == null) { |
| log.debug("ipPrefix is null "); |
| } else { |
| if (isMsgReply) { |
| Route routeForPrefix = new Route(Route.Source.STATIC, pdInfo.pdPrefix, nextHopIp); |
| log.debug("adding Route of PD for indirectly connected."); |
| routeStore.updateRoute(routeForPrefix); |
| if (this.dhcpFpmEnabled) { |
| FpmRecord fpmRecord = new FpmRecord(pdInfo.pdPrefix, nextHopIp, FpmRecord.Type.DHCP_RELAY); |
| dhcpFpmPrefixStore.addFpmRecord(pdInfo.pdPrefix, fpmRecord); |
| } |
| } |
| } |
| leafMsgType = leafDhcp.getMsgType(); |
| } |
| if (leafMsgType == DHCP6.MsgType.RELEASE.value() || |
| (leafMsgType == DHCP6.MsgType.REPLY.value()) && ipInfo == null) { |
| log.warn("DHCP6 RELEASE/REPLY(null ip) from Server. MsgType {}", leafMsgType); |
| //return; |
| } |
| |
| record.addLocation(new HostLocation(location, System.currentTimeMillis())); |
| |
| if (leafMsgType == DHCP6.MsgType.REPLY.value()) { |
| if (ipInfo != null) { |
| log.debug("IP6 address is being stored into dhcp-relay store."); |
| log.debug("Client IP6 address {}", HexString.toHexString(ipInfo.ip6Address.toOctets(), ":")); |
| record.ip6Address(ipInfo.ip6Address); |
| record.updateAddrPrefTime(ipInfo.prefTime); |
| record.updateLastIp6Update(); |
| } else { |
| log.debug("IP6 address is not returned from server. Maybe only PD is returned."); |
| } |
| if (pdInfo != null) { |
| log.debug("IP6 PD address {}", |
| HexString.toHexString(pdInfo.pdPrefix.address().toOctets(), ":")); |
| record.pdPrefix(pdInfo.pdPrefix); |
| record.updatePdPrefTime(pdInfo.prefTime); |
| record.updateLastPdUpdate(); |
| } else { |
| log.debug("IP6 PD address is not returned from server. Maybe only IPAddress is returned."); |
| } |
| } |
| |
| record.getV6Counters().incrementCounter(dhcp6HandlerUtil.getMsgTypeStr(leafMsgType)); |
| record.ip6Status(DHCP6.MsgType.getType(leafMsgType)); |
| record.setDirectlyConnected(directConnFlag); |
| record.updateLastSeen(); |
| dhcpRelayStore.updateDhcpRecord(leafHostId, record); |
| // TODO Use AtomicInteger for the counters |
| try { |
| recordSemaphore.acquire(); |
| try { |
| dhcpRelayCountersStore.incrementCounter(gCount, dhcp6HandlerUtil.getMsgTypeStr(leafMsgType)); |
| } finally { |
| // calling release() after a successful acquire() |
| recordSemaphore.release(); |
| } |
| } catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| } |
| } |
| |
| private List<InternalPacket> processLQ6PacketFromClient(PacketContext context, |
| Ethernet clientPacket, |
| Set<Interface> clientInterfaces, |
| DHCP6 dhcp6Payload) { |
| ConnectPoint inPort = context.inPacket().receivedFrom(); |
| log.info("Got LQ-REQUEST V6 on port {}", inPort); |
| List<Dhcp6Option> lopt = dhcp6Payload.getOptions(); |
| log.info("Options list: {}", lopt); |
| Dhcp6LeaseQueryOption lqoption = dhcp6Payload.getOptions() |
| .stream() |
| .filter(opt -> opt instanceof Dhcp6LeaseQueryOption) |
| .map(pld -> (Dhcp6LeaseQueryOption) pld) |
| .findFirst() |
| .orElse(null); |
| |
| if (lqoption == null) { |
| // Can't find dhcp payload |
| log.warn("Can't find dhcp6 lease query message - aborting"); |
| return null; |
| } else { |
| log.info("dhcp6 lqv6 options found: {}", lqoption); |
| } |
| log.warn("LQv6 for " + lqoption.linkAddress.toString() + " comes from " + inPort.toString()); |
| Ethernet packet = context.inPacket().parsed(); |
| Ip6Address clientAddress = lqoption.linkAddress; |
| IPv6 ipv6Packet = (IPv6) packet.getPayload(); |
| Ip6Address nextHopIp = findNextHopIp6FromRelayStore(clientAddress); |
| |
| // 1. only if there is a route to remove - remove it |
| if (nextHopIp != null) { |
| Route routeForIP6 = new Route(Route.Source.STATIC, clientAddress.toIpPrefix(), nextHopIp); |
| log.debug("Removing route of Client " + clientAddress + |
| " for indirectly connected - next hop ip6 " + nextHopIp); |
| routeStore.removeRoute(routeForIP6); |
| } |
| |
| // 2. note the potential NH this packet came from in case it's a known lease |
| // this NH will then be used to build the route |
| MacAddress potentialNH = packet.getSourceMAC(); |
| VlanId vlanId = VlanId.vlanId(packet.getVlanID()); |
| setPotentialNextHopForIp6InRelayStore(clientAddress, vlanId, potentialNH); |
| |
| // 3. route this LQ6 to all relevant servers |
| IPv6 clientIpv6 = (IPv6) clientPacket.getPayload(); |
| UDP clientUdp = (UDP) clientIpv6.getPayload(); |
| DHCP6 clientDhcp6 = (DHCP6) clientUdp.getPayload(); |
| |
| boolean directConnFlag = dhcp6HandlerUtil.directlyConnected(clientDhcp6); |
| |
| ConnectPoint clientConnectionPoint = context.inPacket().receivedFrom(); |
| VlanId vlanIdInUse = VlanId.vlanId(clientPacket.getVlanID()); |
| Interface clientInterface = interfaceService.getInterfacesByPort(clientConnectionPoint) |
| .stream().filter(iface -> dhcp6HandlerUtil.interfaceContainsVlan(iface, vlanIdInUse)) |
| .findFirst() |
| .orElse(null); |
| |
| List<InternalPacket> internalPackets = new ArrayList<>(); |
| List<DhcpServerInfo> serverInfoList = findValidServerInfo(directConnFlag); |
| List<DhcpServerInfo> copyServerInfoList = new ArrayList<DhcpServerInfo>(serverInfoList); |
| |
| for (DhcpServerInfo serverInfo : copyServerInfoList) { |
| if (!dhcp6HandlerUtil.checkDhcpServerConnPt(directConnFlag, serverInfo)) { |
| log.warn("Can't get server connect point, ignore"); |
| continue; |
| } |
| DhcpServerInfo newServerInfo = getHostInfoForServerInfo(serverInfo, serverInfoList); |
| if (newServerInfo == null) { |
| log.warn("Can't get server interface with host info resolved, ignore"); |
| continue; |
| } |
| |
| Interface serverInterface = getServerInterface(newServerInfo); |
| if (serverInterface == null) { |
| log.warn("Can't get server interface, ignore"); |
| continue; |
| } |
| |
| |
| Ethernet etherRouted = (Ethernet) clientPacket.clone(); |
| MacAddress macFacingServer = serverInterface.mac(); |
| if (macFacingServer == null) { |
| log.warn("No MAC address for server Interface {}", serverInterface); |
| return null; |
| } |
| etherRouted.setSourceMACAddress(macFacingServer); |
| etherRouted.setDestinationMACAddress(newServerInfo.getDhcpConnectMac().get()); |
| InternalPacket internalPacket = |
| new Dhcp6HandlerUtil().new InternalPacket(etherRouted, |
| serverInfo.getDhcpServerConnectPoint().get()); |
| internalPackets.add(internalPacket); |
| log.debug("Sending LQ to DHCP server {}", newServerInfo.getDhcpServerIp6()); |
| } |
| log.debug("num of client packets to send is{}", internalPackets.size()); |
| |
| return internalPackets; |
| } |
| |
| /** |
| * build the DHCP6 solicit/request packet with gatewayip. |
| * |
| * @param context packet context |
| * @param clientPacket client ethernet packet |
| * @param clientInterfaces set of client side interfaces |
| */ |
| private List<InternalPacket> processDhcp6PacketFromClient(PacketContext context, |
| Ethernet clientPacket, |
| Set<Interface> clientInterfaces) { |
| ConnectPoint receivedFrom = context.inPacket().receivedFrom(); |
| DeviceId receivedFromDevice = receivedFrom.deviceId(); |
| Ip6Address relayAgentIp = dhcp6HandlerUtil.getRelayAgentIPv6Address(clientInterfaces); |
| MacAddress relayAgentMac = clientInterfaces.iterator().next().mac(); |
| if (relayAgentIp == null || relayAgentMac == null) { |
| log.warn("Missing DHCP relay agent interface Ipv6 addr config for " |
| + "packet from client on port: {}. Aborting packet processing", |
| clientInterfaces.iterator().next().connectPoint()); |
| dhcpRelayCountersStore.incrementCounter(gCount, DhcpRelayCounters.NO_CLIENT_INTF_MAC); |
| return Lists.newArrayList(); |
| } |
| |
| IPv6 clientIpv6 = (IPv6) clientPacket.getPayload(); |
| UDP clientUdp = (UDP) clientIpv6.getPayload(); |
| DHCP6 clientDhcp6 = (DHCP6) clientUdp.getPayload(); |
| |
| boolean directConnFlag = dhcp6HandlerUtil.directlyConnected(clientDhcp6); |
| |
| ConnectPoint clientConnectionPoint = context.inPacket().receivedFrom(); |
| VlanId vlanIdInUse = VlanId.vlanId(clientPacket.getVlanID()); |
| Interface clientInterface = interfaceService.getInterfacesByPort(clientConnectionPoint) |
| .stream().filter(iface -> dhcp6HandlerUtil.interfaceContainsVlan(iface, vlanIdInUse)) |
| .findFirst() |
| .orElse(null); |
| |
| List<InternalPacket> internalPackets = new ArrayList<>(); |
| List<DhcpServerInfo> serverInfoList = findValidServerInfo(directConnFlag); |
| List<DhcpServerInfo> copyServerInfoList = new ArrayList<DhcpServerInfo>(serverInfoList); |
| |
| for (DhcpServerInfo serverInfo : copyServerInfoList) { |
| if (!dhcp6HandlerUtil.checkDhcpServerConnPt(directConnFlag, serverInfo)) { |
| log.warn("Can't get server connect point, ignore"); |
| continue; |
| } |
| DhcpServerInfo newServerInfo = getHostInfoForServerInfo(serverInfo, serverInfoList); |
| if (newServerInfo == null) { |
| log.warn("Can't get server interface with host info resolved, ignore"); |
| continue; |
| } |
| |
| Interface serverInterface = getServerInterface(newServerInfo); |
| if (serverInterface == null) { |
| log.warn("Can't get server interface, ignore"); |
| continue; |
| } |
| |
| Ethernet etherReply = dhcp6HandlerUtil.buildDhcp6PacketFromClient(context, clientPacket, |
| clientInterfaces, newServerInfo, serverInterface); |
| removeHostOrRoute(directConnFlag, clientConnectionPoint, clientDhcp6, clientPacket, |
| clientIpv6, clientInterface); |
| |
| InternalPacket internalPacket = new Dhcp6HandlerUtil().new InternalPacket(etherReply, |
| serverInfo.getDhcpServerConnectPoint().get()); |
| internalPackets.add(internalPacket); |
| } |
| log.debug("num of client packets to send is{}", internalPackets.size()); |
| |
| return internalPackets; |
| } |
| |
| /** |
| * process the DHCP6 relay-reply packet from dhcp server. |
| * |
| * @param context packet context |
| * @param receivedPacket server ethernet packet |
| * @param recevingInterfaces set of server side interfaces |
| * @return internalPacket toward client |
| */ |
| private InternalPacket processDhcp6PacketFromServer(PacketContext context, |
| Ethernet receivedPacket, Set<Interface> recevingInterfaces) { |
| // get dhcp6 header. |
| Ethernet etherReply = receivedPacket.duplicate(); |
| IPv6 ipv6Packet = (IPv6) etherReply.getPayload(); |
| UDP udpPacket = (UDP) ipv6Packet.getPayload(); |
| DHCP6 dhcp6Relay = (DHCP6) udpPacket.getPayload(); |
| Boolean directConnFlag = dhcp6HandlerUtil.directlyConnected(dhcp6Relay); |
| |
| DHCP6 embeddedDhcp6 = dhcp6Relay.getOptions().stream() |
| .filter(opt -> opt instanceof Dhcp6RelayOption) |
| .map(BasePacket::getPayload) |
| .map(pld -> (DHCP6) pld) |
| .findFirst() |
| .orElse(null); |
| ConnectPoint inPort = context.inPacket().receivedFrom(); |
| DhcpServerInfo foundServerInfo = findServerInfoFromServer(directConnFlag, inPort); |
| |
| if (foundServerInfo == null) { |
| log.warn("Cannot find server info"); |
| dhcpRelayCountersStore.incrementCounter(gCount, DhcpRelayCounters.NO_SERVER_INFO); |
| return null; |
| } else { |
| if (dhcp6HandlerUtil.isServerIpEmpty(foundServerInfo)) { |
| log.warn("Cannot find server info's ipaddress"); |
| dhcpRelayCountersStore.incrementCounter(gCount, DhcpRelayCounters.NO_SERVER_IP6ADDR); |
| return null; |
| } |
| } |
| |
| Dhcp6InterfaceIdOption interfaceIdOption = dhcp6Relay.getOptions().stream() |
| .filter(opt -> opt instanceof Dhcp6InterfaceIdOption) |
| .map(opt -> (Dhcp6InterfaceIdOption) opt) |
| .findFirst() |
| .orElse(null); |
| if (interfaceIdOption == null) { |
| log.warn("Interface Id option is not present, abort packet..."); |
| dhcpRelayCountersStore.incrementCounter(gCount, DhcpRelayCounters.OPTION_MISSING_FAIL); |
| return null; |
| } |
| |
| MacAddress peerMac = interfaceIdOption.getMacAddress(); |
| String clientConnectionPointStr = new String(interfaceIdOption.getInPort()); |
| ConnectPoint clientConnectionPoint = ConnectPoint.deviceConnectPoint(clientConnectionPointStr); |
| VlanId vlanIdInUse = VlanId.vlanId(interfaceIdOption.getVlanId()); |
| Interface clientInterface = interfaceService.getInterfacesByPort(clientConnectionPoint) |
| .stream().filter(iface -> dhcp6HandlerUtil.interfaceContainsVlan(iface, vlanIdInUse)) |
| .findFirst().orElse(null); |
| if (clientInterface == null) { |
| log.warn("Cannot get client interface for from packet, abort... vlan {}", vlanIdInUse.toString()); |
| dhcpRelayCountersStore.incrementCounter(gCount, DhcpRelayCounters.NO_MATCHING_INTF); |
| return null; |
| } |
| MacAddress relayAgentMac = clientInterface.mac(); |
| if (relayAgentMac == null) { |
| log.warn("Can not get client interface mac, abort packet.."); |
| dhcpRelayCountersStore.incrementCounter(gCount, DhcpRelayCounters.NO_CLIENT_INTF_MAC); |
| return null; |
| } |
| etherReply.setSourceMACAddress(relayAgentMac); |
| |
| // find destMac |
| MacAddress clientMac; |
| Ip6Address peerAddress = Ip6Address.valueOf(dhcp6Relay.getPeerAddress()); |
| Set<Host> clients = hostService.getHostsByIp(peerAddress); |
| if (clients.isEmpty()) { |
| log.trace("There's no host found for this address {}", |
| HexString.toHexString(dhcp6Relay.getPeerAddress(), ":")); |
| log.trace("Let's look up interfaceId {}", HexString.toHexString(peerMac.toBytes(), ":")); |
| clientMac = peerMac; |
| } else { |
| clientMac = clients.iterator().next().mac(); |
| if (clientMac == null) { |
| log.warn("No client mac address found, abort packet..."); |
| dhcpRelayCountersStore.incrementCounter(gCount, DhcpRelayCounters.NO_CLIENT_INTF_MAC); |
| return null; |
| } |
| log.trace("Client mac address found from getHostByIp"); |
| } |
| etherReply.setDestinationMACAddress(clientMac); |
| // ip header |
| ipv6Packet.setSourceAddress(dhcp6Relay.getLinkAddress()); |
| ipv6Packet.setDestinationAddress(dhcp6Relay.getPeerAddress()); |
| // udp header |
| udpPacket.setSourcePort(UDP.DHCP_V6_SERVER_PORT); |
| if (directConnFlag) { |
| udpPacket.setDestinationPort(UDP.DHCP_V6_CLIENT_PORT); |
| } else { |
| udpPacket.setDestinationPort(UDP.DHCP_V6_SERVER_PORT); |
| } |
| // add host or route |
| addHostOrRoute(directConnFlag, clientConnectionPoint, dhcp6Relay, embeddedDhcp6, |
| clientMac, clientInterface); |
| |
| |
| udpPacket.setPayload(embeddedDhcp6); |
| udpPacket.resetChecksum(); |
| ipv6Packet.setPayload(udpPacket); |
| etherReply.setPayload(ipv6Packet); |
| return new Dhcp6HandlerUtil().new InternalPacket(etherReply, clientConnectionPoint); |
| } |
| |
| // Returns the first v6 interface ip out of a set of interfaces or null. |
| // Checks all interfaces, and ignores v6 interface ips |
| private Ip6Address getRelayAgentIPv6Address(Set<Interface> intfs) { |
| for (Interface intf : intfs) { |
| for (InterfaceIpAddress ip : intf.ipAddressesList()) { |
| Ip6Address relayAgentIp = ip.ipAddress().getIp6Address(); |
| if (relayAgentIp != null) { |
| return relayAgentIp; |
| } |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public void setDhcpFpmEnabled(Boolean enabled) { |
| dhcpFpmEnabled = enabled; |
| } |
| |
| @Override |
| public void setDefaultDhcpServerConfigs(Collection<DhcpServerConfig> configs) { |
| log.debug("setDefaultDhcpServerConfigs is called."); |
| setDhcpServerConfigs(configs, defaultServerInfoList); |
| } |
| |
| @Override |
| public void setIndirectDhcpServerConfigs(Collection<DhcpServerConfig> configs) { |
| log.debug("setIndirectDhcpServerConfigs is called."); |
| setDhcpServerConfigs(configs, indirectServerInfoList); |
| } |
| |
| public void setDhcpServerConfigs(Collection<DhcpServerConfig> configs, List<DhcpServerInfo> serverInfoList) { |
| log.debug("config size {}.", configs.size()); |
| |
| if (configs.size() == 0) { |
| // no config to update |
| return; |
| } |
| // TODO: currently we pick up first DHCP server config. |
| // Will use other server configs in the future for HA. |
| Boolean isConfigValid = false; |
| for (DhcpServerConfig serverConfig : configs) { |
| if (serverConfig.getDhcpServerIp6().isPresent()) { |
| isConfigValid = true; |
| break; |
| } |
| } |
| if (!isConfigValid) { |
| log.warn("No IP V6 server address found."); |
| return; // No IP V6 address found |
| } |
| for (DhcpServerInfo oldServerInfo : serverInfoList) { |
| // stop monitoring gateway or server |
| oldServerInfo.getDhcpGatewayIp6().ifPresent(gatewayIp -> { |
| hostService.stopMonitoringIp(gatewayIp); |
| }); |
| oldServerInfo.getDhcpServerIp6().ifPresent(serverIp -> { |
| hostService.stopMonitoringIp(serverIp); |
| cancelDhcpPacket(serverIp); |
| }); |
| } |
| serverInfoList.clear(); |
| for (DhcpServerConfig serverConfig : configs) { |
| // Create new server info according to the config |
| DhcpServerInfo newServerInfo = new DhcpServerInfo(serverConfig, |
| DhcpServerInfo.Version.DHCP_V6); |
| checkState(newServerInfo.getDhcpServerConnectPoint().isPresent(), |
| "Connect point not exists"); |
| checkState(newServerInfo.getDhcpServerIp6().isPresent(), |
| "IP of DHCP server not exists"); |
| |
| log.debug("DHCP server connect point: {}", newServerInfo.getDhcpServerConnectPoint().orElse(null)); |
| log.debug("DHCP server IP: {}", newServerInfo.getDhcpServerIp6().orElse(null)); |
| |
| Ip6Address serverIp = newServerInfo.getDhcpServerIp6().get(); |
| Ip6Address ipToProbe; |
| if (newServerInfo.getDhcpGatewayIp6().isPresent()) { |
| ipToProbe = newServerInfo.getDhcpGatewayIp6().get(); |
| } else { |
| ipToProbe = newServerInfo.getDhcpServerIp6().orElse(null); |
| } |
| String hostToProbe = newServerInfo.getDhcpGatewayIp6() |
| .map(ip -> "gateway").orElse("server"); |
| |
| log.warn("Probing to resolve {} IP {}", hostToProbe, ipToProbe); |
| hostService.startMonitoringIp(ipToProbe); |
| |
| Set<Host> hosts = hostService.getHostsByIp(ipToProbe); |
| if (!hosts.isEmpty()) { |
| Host host = hosts.iterator().next(); |
| newServerInfo.setDhcpConnectVlan(host.vlan()); |
| newServerInfo.setDhcpConnectMac(host.mac()); |
| log.warn("Host found host {}", host); |
| |
| } else { |
| log.warn("No host found host ip {}", ipToProbe); |
| } |
| // Add new server info |
| synchronized (this) { |
| serverInfoList.add(newServerInfo); |
| } |
| if (!hosts.isEmpty()) { |
| requestDhcpPacket(serverIp); |
| } |
| } |
| } |
| |
| class InternalHostListener implements HostListener { |
| @Override |
| public void event(HostEvent event) { |
| switch (event.type()) { |
| case HOST_ADDED: |
| case HOST_UPDATED: |
| hostUpdated(event.subject()); |
| break; |
| case HOST_REMOVED: |
| hostRemoved(event.subject()); |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| |
| /** |
| * Handle host updated. |
| * If the host is DHCP server or gateway, update connect mac and vlan. |
| * |
| * @param host the host |
| */ |
| private void hostUpdated(Host host) { |
| hostUpdated(host, defaultServerInfoList); |
| hostUpdated(host, indirectServerInfoList); |
| } |
| |
| private void hostUpdated(Host host, List<DhcpServerInfo> serverInfoList) { |
| DhcpServerInfo serverInfo; |
| Ip6Address targetIp; |
| if (!serverInfoList.isEmpty()) { |
| serverInfo = serverInfoList.get(0); |
| Ip6Address serverIp = serverInfo.getDhcpServerIp6().orElse(null); |
| targetIp = serverInfo.getDhcpGatewayIp6().orElse(null); |
| |
| if (targetIp == null) { |
| targetIp = serverIp; |
| } |
| if (targetIp != null) { |
| if (host.ipAddresses().contains(targetIp)) { |
| serverInfo.setDhcpConnectMac(host.mac()); |
| serverInfo.setDhcpConnectVlan(host.vlan()); |
| requestDhcpPacket(serverIp); |
| } |
| } |
| } |
| } |
| /** |
| * Handle host removed. |
| * If the host is DHCP server or gateway, unset connect mac and vlan. |
| * |
| * @param host the host |
| */ |
| private void hostRemoved(Host host) { |
| hostRemoved(host, defaultServerInfoList); |
| hostRemoved(host, indirectServerInfoList); |
| } |
| |
| private void hostRemoved(Host host, List<DhcpServerInfo> serverInfoList) { |
| DhcpServerInfo serverInfo; |
| Ip6Address targetIp; |
| |
| if (!serverInfoList.isEmpty()) { |
| serverInfo = serverInfoList.get(0); |
| Ip6Address serverIp = serverInfo.getDhcpServerIp6().orElse(null); |
| targetIp = serverInfo.getDhcpGatewayIp6().orElse(null); |
| |
| if (targetIp == null) { |
| targetIp = serverIp; |
| } |
| if (targetIp != null) { |
| if (host.ipAddresses().contains(targetIp)) { |
| serverInfo.setDhcpConnectVlan(null); |
| serverInfo.setDhcpConnectMac(null); |
| cancelDhcpPacket(serverIp); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Returns the first interface ip from interface. |
| * |
| * @param iface interface of one connect point |
| * @return the first interface IP; null if not exists an IP address in |
| * these interfaces |
| */ |
| private Ip6Address getFirstIpFromInterface(Interface iface) { |
| checkNotNull(iface, "Interface can't be null"); |
| return iface.ipAddressesList().stream() |
| .map(InterfaceIpAddress::ipAddress) |
| .filter(IpAddress::isIp6) |
| .map(IpAddress::getIp6Address) |
| .findFirst() |
| .orElse(null); |
| } |
| |
| /** |
| * Gets Interface facing to the server for default host. |
| * |
| * @return the Interface facing to the server; null if not found |
| */ |
| private Interface getServerInterface() { |
| DhcpServerInfo serverInfo; |
| ConnectPoint dhcpServerConnectPoint; |
| VlanId dhcpConnectVlan; |
| |
| if (!defaultServerInfoList.isEmpty()) { |
| serverInfo = defaultServerInfoList.get(0); |
| dhcpServerConnectPoint = serverInfo.getDhcpServerConnectPoint().orElse(null); |
| dhcpConnectVlan = serverInfo.getDhcpConnectVlan().orElse(null); |
| } else { |
| return null; |
| } |
| if (dhcpServerConnectPoint == null || dhcpConnectVlan == null) { |
| log.info("Default DHCP server {} not resolve yet", serverInfo.getDhcpGatewayIp6()); |
| return null; |
| } |
| return interfaceService.getInterfacesByPort(dhcpServerConnectPoint) |
| .stream() |
| .filter(iface -> dhcp6HandlerUtil.interfaceContainsVlan(iface, dhcpConnectVlan)) |
| .findFirst() |
| .orElse(null); |
| } |
| |
| /** |
| * Gets Interface facing to the server for indirect hosts. |
| * Use default server Interface if indirect server not configured. |
| * |
| * @return the Interface facing to the server; null if not found |
| */ |
| private Interface getIndirectServerInterface() { |
| DhcpServerInfo serverInfo; |
| |
| ConnectPoint indirectDhcpServerConnectPoint; |
| VlanId indirectDhcpConnectVlan; |
| |
| if (!indirectServerInfoList.isEmpty()) { |
| serverInfo = indirectServerInfoList.get(0); |
| indirectDhcpServerConnectPoint = serverInfo.getDhcpServerConnectPoint().orElse(null); |
| indirectDhcpConnectVlan = serverInfo.getDhcpConnectVlan().orElse(null); |
| } else { |
| return getServerInterface(); |
| } |
| if (indirectDhcpServerConnectPoint == null || indirectDhcpConnectVlan == null) { |
| log.info("Indirect DHCP server {} not resolve yet", serverInfo.getDhcpGatewayIp6()); |
| return null; |
| } |
| return interfaceService.getInterfacesByPort(indirectDhcpServerConnectPoint) |
| .stream() |
| .filter(iface -> dhcp6HandlerUtil.interfaceContainsVlan(iface, indirectDhcpConnectVlan)) |
| .findFirst() |
| .orElse(null); |
| } |
| |
| /** |
| * Checks if serverInfo's host info (mac and vlan) is filled in; if not, fills in. |
| * |
| * @param serverInfo server information |
| * @return newServerInfo if host info can be either found or filled in. |
| */ |
| private DhcpServerInfo getHostInfoForServerInfo(DhcpServerInfo serverInfo, List<DhcpServerInfo> sererInfoList) { |
| DhcpServerInfo newServerInfo = null; |
| MacAddress dhcpServerConnectMac = serverInfo.getDhcpConnectMac().orElse(null); |
| VlanId dhcpConnectVlan = serverInfo.getDhcpConnectVlan().orElse(null); |
| ConnectPoint dhcpServerConnectPoint = serverInfo.getDhcpServerConnectPoint().orElse(null); |
| |
| if (dhcpServerConnectMac != null && dhcpConnectVlan != null) { |
| newServerInfo = serverInfo; |
| log.info("DHCP server {} host info found. ConnectPt{} Mac {} vlan {}", serverInfo.getDhcpServerIp6(), |
| dhcpServerConnectPoint, dhcpServerConnectMac, dhcpConnectVlan); |
| } else { |
| log.warn("DHCP server {} not resolve yet connectPt {} mac {} vlan {}", serverInfo.getDhcpServerIp6(), |
| dhcpServerConnectPoint, dhcpServerConnectMac, dhcpConnectVlan); |
| |
| Ip6Address ipToProbe; |
| if (serverInfo.getDhcpGatewayIp6().isPresent()) { |
| ipToProbe = serverInfo.getDhcpGatewayIp6().get(); |
| } else { |
| ipToProbe = serverInfo.getDhcpServerIp6().orElse(null); |
| } |
| String hostToProbe = serverInfo.getDhcpGatewayIp6() |
| .map(ip -> "gateway").orElse("server"); |
| |
| log.info("Dynamically probing to resolve {} IP {}", hostToProbe, ipToProbe); |
| hostService.startMonitoringIp(ipToProbe); |
| |
| Set<Host> hosts = hostService.getHostsByIp(ipToProbe); |
| if (!hosts.isEmpty()) { |
| int serverInfoIndex = sererInfoList.indexOf(serverInfo); |
| Host host = hosts.iterator().next(); |
| serverInfo.setDhcpConnectVlan(host.vlan()); |
| serverInfo.setDhcpConnectMac(host.mac()); |
| // replace the serverInfo in the list |
| sererInfoList.set(serverInfoIndex, serverInfo); |
| newServerInfo = serverInfo; |
| log.warn("Dynamically host found host {}", host); |
| } else { |
| log.warn("No host found host ip {} dynamically", ipToProbe); |
| } |
| } |
| return newServerInfo; |
| } |
| |
| /** |
| * Gets Interface facing to the server for default host. |
| * |
| * @param serverInfo server information |
| * @return the Interface facing to the server; null if not found |
| */ |
| private Interface getServerInterface(DhcpServerInfo serverInfo) { |
| Interface serverInterface = null; |
| |
| ConnectPoint dhcpServerConnectPoint = serverInfo.getDhcpServerConnectPoint().orElse(null); |
| VlanId dhcpConnectVlan = serverInfo.getDhcpConnectVlan().orElse(null); |
| |
| if (dhcpServerConnectPoint != null && dhcpConnectVlan != null) { |
| serverInterface = interfaceService.getInterfacesByPort(dhcpServerConnectPoint) |
| .stream() |
| .filter(iface -> dhcp6HandlerUtil.interfaceContainsVlan(iface, dhcpConnectVlan)) |
| .findFirst() |
| .orElse(null); |
| } else { |
| log.warn("DHCP server {} not resolve yet connectPoint {} vlan {}", serverInfo.getDhcpServerIp6(), |
| dhcpServerConnectPoint, dhcpConnectVlan); |
| } |
| |
| return serverInterface; |
| } |
| |
| private void requestDhcpPacket(Ip6Address serverIp) { |
| requestServerDhcpPacket(serverIp); |
| requestClientDhcpPacket(serverIp); |
| requestServerLQPacket(serverIp); |
| } |
| |
| private void cancelDhcpPacket(Ip6Address serverIp) { |
| cancelServerDhcpPacket(serverIp); |
| cancelClientDhcpPacket(serverIp); |
| cancelServerLQPacket(serverIp); |
| } |
| |
| private void cancelServerDhcpPacket(Ip6Address serverIp) { |
| TrafficSelector serverSelector = |
| DefaultTrafficSelector.builder(SERVER_RELAY_SELECTOR) |
| .matchIPv6Src(serverIp.toIpPrefix()) |
| .build(); |
| packetService.cancelPackets(serverSelector, |
| PacketPriority.CONTROL, |
| appId); |
| } |
| |
| private void cancelServerLQPacket(Ip6Address serverIp) { |
| TrafficSelector serverSelector = |
| DefaultTrafficSelector.builder(LEASE_QUERY_RESPONSE_SELECTOR) |
| .matchIPv6Src(serverIp.toIpPrefix()) |
| .build(); |
| packetService.cancelPackets(serverSelector, |
| PacketPriority.CONTROL, |
| appId); |
| } |
| |
| private void requestServerDhcpPacket(Ip6Address serverIp) { |
| TrafficSelector serverSelector = |
| DefaultTrafficSelector.builder(SERVER_RELAY_SELECTOR) |
| .matchIPv6Src(serverIp.toIpPrefix()) |
| .build(); |
| packetService.requestPackets(serverSelector, |
| PacketPriority.CONTROL, |
| appId); |
| } |
| |
| private void requestServerLQPacket(Ip6Address serverIp) { |
| TrafficSelector serverSelector = |
| DefaultTrafficSelector.builder(LEASE_QUERY_RESPONSE_SELECTOR) |
| .matchIPv6Src(serverIp.toIpPrefix()) |
| .build(); |
| packetService.requestPackets(serverSelector, |
| PacketPriority.CONTROL, |
| appId); |
| } |
| |
| private void cancelClientDhcpPacket(Ip6Address serverIp) { |
| // Packet comes from relay |
| TrafficSelector indirectClientSelector = |
| DefaultTrafficSelector.builder(SERVER_RELAY_SELECTOR) |
| .matchIPv6Dst(serverIp.toIpPrefix()) |
| .build(); |
| packetService.cancelPackets(indirectClientSelector, |
| PacketPriority.CONTROL, |
| appId); |
| indirectClientSelector = |
| DefaultTrafficSelector.builder(SERVER_RELAY_SELECTOR) |
| .matchIPv6Dst(Ip6Address.ALL_DHCP_RELAY_AGENTS_AND_SERVERS.toIpPrefix()) |
| .build(); |
| packetService.cancelPackets(indirectClientSelector, |
| PacketPriority.CONTROL, |
| appId); |
| indirectClientSelector = |
| DefaultTrafficSelector.builder(SERVER_RELAY_SELECTOR) |
| .matchIPv6Dst(Ip6Address.ALL_DHCP_SERVERS.toIpPrefix()) |
| .build(); |
| packetService.cancelPackets(indirectClientSelector, |
| PacketPriority.CONTROL, |
| appId); |
| |
| // Packet comes from client |
| packetService.cancelPackets(CLIENT_SERVER_SELECTOR, |
| PacketPriority.CONTROL, |
| appId); |
| } |
| |
| private void requestClientDhcpPacket(Ip6Address serverIp) { |
| // Packet comes from relay |
| TrafficSelector indirectClientSelector = |
| DefaultTrafficSelector.builder(SERVER_RELAY_SELECTOR) |
| .matchIPv6Dst(serverIp.toIpPrefix()) |
| .build(); |
| packetService.requestPackets(indirectClientSelector, |
| PacketPriority.CONTROL, |
| appId); |
| indirectClientSelector = |
| DefaultTrafficSelector.builder(SERVER_RELAY_SELECTOR) |
| .matchIPv6Dst(Ip6Address.ALL_DHCP_RELAY_AGENTS_AND_SERVERS.toIpPrefix()) |
| .build(); |
| packetService.requestPackets(indirectClientSelector, |
| PacketPriority.CONTROL, |
| appId); |
| indirectClientSelector = |
| DefaultTrafficSelector.builder(SERVER_RELAY_SELECTOR) |
| .matchIPv6Dst(Ip6Address.ALL_DHCP_SERVERS.toIpPrefix()) |
| .build(); |
| packetService.requestPackets(indirectClientSelector, |
| PacketPriority.CONTROL, |
| appId); |
| |
| // Packet comes from client |
| packetService.requestPackets(CLIENT_SERVER_SELECTOR, |
| PacketPriority.CONTROL, |
| appId); |
| } |
| |
| /** |
| * Process the ignore rules. |
| * |
| * @param deviceId the device id |
| * @param vlanId the vlan to be ignored |
| * @param op the operation, ADD to install; REMOVE to uninstall rules |
| */ |
| private void processIgnoreVlanRule(DeviceId deviceId, VlanId vlanId, Objective.Operation op) { |
| AtomicInteger installedCount = new AtomicInteger(DHCP_SELECTORS.size()); |
| DHCP_SELECTORS.forEach(trafficSelector -> { |
| TrafficSelector selector = DefaultTrafficSelector.builder(trafficSelector) |
| .matchVlanId(vlanId) |
| .build(); |
| |
| ForwardingObjective.Builder builder = DefaultForwardingObjective.builder() |
| .withFlag(ForwardingObjective.Flag.VERSATILE) |
| .withSelector(selector) |
| .withPriority(IGNORE_CONTROL_PRIORITY) |
| .withTreatment(DefaultTrafficTreatment.emptyTreatment()) |
| .fromApp(appId); |
| |
| |
| ObjectiveContext objectiveContext = new ObjectiveContext() { |
| @Override |
| public void onSuccess(Objective objective) { |
| log.info("Ignore rule {} (Vlan id {}, device {}, selector {})", |
| op, vlanId, deviceId, selector); |
| int countDown = installedCount.decrementAndGet(); |
| if (countDown != 0) { |
| return; |
| } |
| switch (op) { |
| case ADD: |
| ignoredVlans.put(deviceId, vlanId); |
| break; |
| case REMOVE: |
| ignoredVlans.remove(deviceId, vlanId); |
| break; |
| default: |
| log.warn("Unsupported objective operation {}", op); |
| break; |
| } |
| } |
| |
| @Override |
| public void onError(Objective objective, ObjectiveError error) { |
| log.warn("Can't {} ignore rule (vlan id {}, selector {}, device {}) due to {}", |
| op, vlanId, selector, deviceId, error); |
| } |
| }; |
| |
| ForwardingObjective fwd; |
| switch (op) { |
| case ADD: |
| fwd = builder.add(objectiveContext); |
| break; |
| case REMOVE: |
| fwd = builder.remove(objectiveContext); |
| break; |
| default: |
| log.warn("Unsupported objective operation {}", op); |
| return; |
| } |
| |
| Device device = deviceService.getDevice(deviceId); |
| if (device == null || !device.is(Pipeliner.class)) { |
| log.warn("Device {} is not available now, wait until device is available", deviceId); |
| return; |
| } |
| flowObjectiveService.apply(deviceId, fwd); |
| }); |
| } |
| |
| /** |
| * Find first ipaddress for a given Host info i.e. mac and vlan. |
| * |
| * @param clientMac client mac |
| * @param vlanId packet's vlan |
| * @return next-hop link-local ipaddress for a given host |
| */ |
| private IpAddress getFirstIpByHost(Boolean directConnFlag, MacAddress clientMac, VlanId vlanId) { |
| IpAddress nextHopIp; |
| // pick out the first link-local ip address |
| HostId gwHostId = HostId.hostId(clientMac, vlanId); |
| Host gwHost = hostService.getHost(gwHostId); |
| if (gwHost == null) { |
| log.warn("Can't find gateway host for hostId {}", gwHostId); |
| return null; |
| } |
| if (directConnFlag) { |
| nextHopIp = gwHost.ipAddresses() |
| .stream() |
| .filter(IpAddress::isIp6) |
| .map(IpAddress::getIp6Address) |
| .findFirst() |
| .orElse(null); |
| } else { |
| nextHopIp = gwHost.ipAddresses() |
| .stream() |
| .filter(IpAddress::isIp6) |
| .filter(ip6 -> ip6.isLinkLocal()) |
| .map(IpAddress::getIp6Address) |
| .findFirst() |
| .orElse(null); |
| } |
| return nextHopIp; |
| } |
| |
| private List<DhcpServerInfo> findValidServerInfo(boolean directConnFlag) { |
| List<DhcpServerInfo> validServerInfo; |
| |
| if (directConnFlag || indirectServerInfoList.isEmpty()) { |
| validServerInfo = new ArrayList<DhcpServerInfo>(defaultServerInfoList); |
| } else { |
| validServerInfo = new ArrayList<DhcpServerInfo>(indirectServerInfoList); |
| } |
| return validServerInfo; |
| } |
| |
| private DhcpServerInfo findServerInfoFromServer(boolean directConnFlag, ConnectPoint inPort) { |
| List<DhcpServerInfo> validServerInfoList = findValidServerInfo(directConnFlag); |
| DhcpServerInfo foundServerInfo = null; |
| for (DhcpServerInfo serverInfo : validServerInfoList) { |
| if (inPort.equals(serverInfo.getDhcpServerConnectPoint().get())) { |
| foundServerInfo = serverInfo; |
| log.warn("ServerInfo found for Rcv port {} Server Connect Point {} for {}", |
| inPort, serverInfo.getDhcpServerConnectPoint(), directConnFlag ? "direct" : "indirect"); |
| break; |
| } else { |
| log.warn("Rcv port {} not the same as Server Connect Point {} for {}", |
| inPort, serverInfo.getDhcpServerConnectPoint(), directConnFlag ? "direct" : "indirect"); |
| } |
| } |
| return foundServerInfo; |
| } |
| |
| /** |
| * Set the dhcp6 lease expiry poll interval value. |
| * |
| * @param val poll interval value in seconds |
| */ |
| @Override |
| public void setDhcp6PollInterval(int val) { |
| dhcp6PollInterval = val; |
| } |
| |
| /** |
| * get the dhcp6 lease expiry poll interval value. |
| * This is a private function |
| * @return poll interval value in seconds |
| */ |
| private int getDhcp6PollInterval() { |
| return dhcp6PollInterval; |
| } |
| |
| /** |
| * Find lease-expired ipaddresses and pd prefixes. |
| * Removing host/route/fpm entries. |
| */ |
| public void timeTick() { |
| long currentTime = System.currentTimeMillis(); |
| Collection<DhcpRecord> records = dhcpRelayStore.getDhcpRecords(); |
| |
| log.debug("timeTick called currenttime {} records num {} ", currentTime, records.size()); |
| |
| records.forEach(record -> { |
| boolean addrOrPdRemoved = false; |
| DHCP6.MsgType ip6Status = record.ip6Status().orElse(null); |
| if (ip6Status == null) { |
| log.debug("record is not valid v6 record."); |
| return; |
| } |
| |
| if ((currentTime - record.getLastIp6Update()) > |
| ((record.addrPrefTime() + getDhcp6PollInterval() / 2) * 1000)) { |
| // remove ipaddress from host/route table |
| IpAddress ip = record.ip6Address().orElse(null); |
| if (ip != null) { |
| if (record.directlyConnected()) { |
| providerService.removeIpFromHost(HostId.hostId(record.macAddress(), |
| record.vlanId()), ip); |
| } else { |
| MacAddress gwMac = record.nextHop().orElse(null); |
| if (gwMac == null) { |
| log.warn("Can't find gateway mac address from record {} for ip6Addr", record); |
| return; |
| } |
| IpAddress nextHopIp = getFirstIpByHost(record.directlyConnected(), |
| gwMac, |
| record.vlanId()); |
| Route route = new Route(Route.Source.STATIC, ip.toIpPrefix(), nextHopIp); |
| routeStore.removeRoute(route); |
| } |
| record.updateAddrPrefTime(0); |
| record.ip6Address(null); |
| addrOrPdRemoved = true; |
| dhcpRelayStore.updateDhcpRecord(HostId.hostId(record.macAddress(), |
| record.vlanId()), record); |
| log.warn("IP6 address is set to null. delta {} lastUpdate {} addrPrefTime {}", |
| (currentTime - record.getLastIp6Update()), record.getLastIp6Update(), |
| record.addrPrefTime()); |
| } |
| } |
| if ((currentTime - record.getLastPdUpdate()) > |
| ((record.pdPrefTime() + getDhcp6PollInterval() / 2) * 1000)) { |
| // remove PD from route/fpm table |
| IpPrefix pdIpPrefix = record.pdPrefix().orElse(null); |
| if (pdIpPrefix != null) { |
| if (record.directlyConnected()) { |
| providerService.removeIpFromHost(HostId.hostId(record.macAddress(), record.vlanId()), |
| pdIpPrefix.address().getIp6Address()); |
| } else { |
| MacAddress gwMac = record.nextHop().orElse(null); |
| if (gwMac == null) { |
| log.warn("Can't find gateway mac address from record {} for PD prefix", record); |
| return; |
| } |
| IpAddress nextHopIp = getFirstIpByHost(record.directlyConnected(), |
| gwMac, |
| record.vlanId()); |
| Route route = new Route(Route.Source.STATIC, pdIpPrefix, nextHopIp); |
| routeStore.removeRoute(route); |
| if (this.dhcpFpmEnabled) { |
| dhcpFpmPrefixStore.removeFpmRecord(pdIpPrefix); |
| } |
| } |
| record.updatePdPrefTime(0); |
| record.pdPrefix(null); |
| addrOrPdRemoved = true; |
| dhcpRelayStore.updateDhcpRecord(HostId.hostId(record.macAddress(), |
| record.vlanId()), record); |
| log.warn("PD prefix is set to null.delta {} pdPrefTime {}", |
| (currentTime - record.getLastPdUpdate()), record.pdPrefTime()); |
| } |
| } |
| if (addrOrPdRemoved && |
| !record.ip6Address().isPresent() && !record.pdPrefix().isPresent()) { |
| log.warn("ip6Status {} IP6 address and IP6 PD both are null. Remove record.", ip6Status); |
| dhcpRelayStore.removeDhcpRecord(HostId.hostId(record.macAddress(), record.vlanId())); |
| } |
| } |
| ); |
| } |
| } |