Examples with DHCP6 org.onlab.packet.DHCP6 used on opensource projects

Example 21 with DHCP6

use of org.onlab.packet.DHCP6 in project onos by opennetworkinglab.

the class Dhcp6HandlerImpl method processDhcp6PacketFromClient.

/**
 * 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();
    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 = InternalPacket.internalPacket(etherReply, serverInfo.getDhcpServerConnectPoint().get());
        internalPackets.add(internalPacket);
    }
    log.debug("num of client packets to send is{}", internalPackets.size());
    return internalPackets;
}

Example 22 with DHCP6

use of org.onlab.packet.DHCP6 in project onos by opennetworkinglab.

the class Dhcp6HandlerImpl method processLQ6PacketFromClient.

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.DHCP, 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);
    boolean serverFound = false;
    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.debug("Can't get server interface with host info resolved, ignore serverInfo {} serverInfoList {}", serverInfo, serverInfoList);
            continue;
        }
        Interface serverInterface = getServerInterface(newServerInfo);
        if (serverInterface == null) {
            log.debug("Can't get server interface, ignore for serverInfo {}, serverInfoList {}", serverInfo, serverInfoList);
            continue;
        }
        serverFound = true;
        log.debug("Server Info Found {}", serverInfo.getDhcpConnectMac());
        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 = InternalPacket.internalPacket(etherRouted, serverInfo.getDhcpServerConnectPoint().get());
        internalPackets.add(internalPacket);
        log.debug("Sending LQ to DHCP server {}", newServerInfo.getDhcpServerIp6());
    }
    if (!serverFound) {
        log.warn("ProcessDhcp6PacketFromClient No Server Found");
    }
    log.debug("num of client packets to send is{}", internalPackets.size());
    return internalPackets;
}

Example 23 with DHCP6

use of org.onlab.packet.DHCP6 in project onos by opennetworkinglab.

the class Dhcp6HandlerImpl method addHostOrRoute.

/**
 * 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 vlanIdInUse vlanid encoded in the interface id Option
 */
private void addHostOrRoute(boolean directConnFlag, ConnectPoint location, DHCP6 dhcp6Relay, DHCP6 embeddedDhcp6, MacAddress srcMac, Interface clientInterface, VlanId vlanIdInUse) {
    log.debug("addHostOrRoute entered.");
    VlanId vlanId;
    if (clientInterface.vlanTagged().isEmpty()) {
        vlanId = clientInterface.vlan();
    } else {
        // might be multiple vlan in same interface
        vlanId = vlanIdInUse;
    }
    if (vlanId == null) {
        vlanId = VlanId.NONE;
    }
    Boolean isMsgReply = Dhcp6HandlerUtil.isDhcp6Reply(dhcp6Relay);
    MacAddress leafClientMac;
    Byte leafMsgType;
    Dhcp6ClientIdOption clientIdOption = Dhcp6HandlerUtil.extractClientId(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.DHCP, ipInfo.ip6Address.toIpPrefix(), nextHopIp);
                log.debug("adding Route of 128 address for indirectly connected.");
                routeStore.replaceRoute(routeForIP);
            }
        }
        pdInfo = extractPrefix(leafDhcp);
        if (pdInfo == null) {
            log.debug("ipPrefix is null ");
        } else {
            if (isMsgReply) {
                Route routeForPrefix = new Route(Route.Source.DHCP, pdInfo.pdPrefix, nextHopIp);
                log.debug("adding Route of PD for indirectly connected.");
                routeStore.replaceRoute(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();
        }
        */
}

Example 24 with DHCP6

use of org.onlab.packet.DHCP6 in project onos by opennetworkinglab.

the class Dhcp6HandlerImpl method forwardPacket.

// forward the packet to ConnectPoint where the DHCP server is attached.
private void forwardPacket(InternalPacket packet) {
    // send Packetout to dhcp server connectpoint.
    if (packet.getDestLocation() != null) {
        TrafficTreatment t = DefaultTrafficTreatment.builder().setOutput(packet.getDestLocation().port()).build();
        OutboundPacket o = new DefaultOutboundPacket(packet.getDestLocation().deviceId(), t, ByteBuffer.wrap(packet.getPacket().serialize()));
        packetService.emit(o);
        if (log.isTraceEnabled()) {
            IPv6 ip6 = (IPv6) packet.getPacket().getPayload();
            UDP udp = (UDP) ip6.getPayload();
            DHCP6 dhcp6 = (DHCP6) udp.getPayload();
            log.trace("Relaying packet to destination {} eth: {} dhcp: {}", packet.getDestLocation(), packet.getPacket(), dhcp6);
        }
    }
}

Example 25 with DHCP6

use of org.onlab.packet.DHCP6 in project onos by opennetworkinglab.

the class Dhcp6HandlerImpl method processDhcpPacket.

@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("incoming 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> ethernetClientPackets = learnRouteFromLeasequery ? processLQ6PacketFromClient(context, receivedPacket, receivingInterfaces, dhcp6Payload) : processDhcp6ForwardOnly(context, receivedPacket, receivingInterfaces, dhcp6Payload);
        for (InternalPacket internalPacket : ethernetClientPackets) {
            forwardPacket(internalPacket);
        }
    } else if (msgTypeVal == DHCP6.MsgType.LEASEQUERY_REPLY.value() && learnRouteFromLeasequery) {
        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 {}, {}", receivedPacket, dhcp6Payload);
        InternalPacket ethernetPacketReply = processDhcp6PacketFromServer(context, receivedPacket, receivingInterfaces);
        if (ethernetPacketReply != null) {
            forwardPacket(ethernetPacketReply);
        }
    } else {
        log.warn("Not so fast, packet type {} not supported yet", msgTypeVal);
    }
}