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

Example 46 with MacAddress

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

the class Dhcp4HandlerImpl method processLeaseQueryFromServer.

/**
 * Build the DHCP offer/ack with proper client port.
 *
 * @param ethernetPacket the original packet comes from server
 * @return new packet which will send to the client
 */
private InternalPacket processLeaseQueryFromServer(Ethernet ethernetPacket) {
    // get dhcp header.
    Ethernet etherReply = (Ethernet) ethernetPacket.clone();
    IPv4 ipv4Packet = (IPv4) etherReply.getPayload();
    UDP udpPacket = (UDP) ipv4Packet.getPayload();
    DHCP dhcpPayload = (DHCP) udpPacket.getPayload();
    // determine the vlanId of the client host - note that this vlan id
    // could be different from the vlan in the packet from the server
    Interface clientInterface = null;
    MacAddress destinationMac = MacAddress.valueOf(dhcpPayload.getClientHardwareAddress());
    if (!learnRouteFromLeasequery) {
        int giaddr = ipv4Packet.getDestinationAddress();
        IpAddress destinationAddress = Ip4Address.valueOf(giaddr);
        log.debug("DHCPLEASEQUERYRESP giaddr: {}({})", giaddr, destinationAddress);
        Host destinationHost = hostService.getHostsByIp(destinationAddress).stream().findFirst().orElse(null);
        if (destinationHost != null) {
            destinationMac = destinationHost.mac();
            log.trace("DHCPLEASEQUERYRESP destination mac is: {}", destinationMac);
            ConnectPoint destinationLocation = destinationHost.location();
            log.trace("Lookup for client interface by destination location {}", destinationLocation);
            clientInterface = interfaceService.getInterfacesByPort(destinationLocation).stream().filter(iface -> interfaceContainsVlan(iface, VlanId.vlanId(etherReply.getVlanID()))).findFirst().orElse(null);
            log.trace("Found Host {} by ip {}", destinationHost, destinationAddress);
            log.debug("DHCPLEASEQUERYRESP Client interface: {}", (clientInterface != null ? clientInterface : "not resolved"));
        }
    } else {
        clientInterface = getClientInterface(ethernetPacket, dhcpPayload).orElse(null);
    }
    if (clientInterface == null) {
        log.warn("Cannot find the interface for the DHCP {}", dhcpPayload);
        return null;
    }
    VlanId vlanId;
    if (clientInterface.vlanTagged().isEmpty()) {
        vlanId = clientInterface.vlan();
    } else {
        // might be multiple vlan in same interface
        vlanId = getVlanIdFromRelayAgentOption(dhcpPayload);
    }
    if (vlanId == null) {
        vlanId = VlanId.NONE;
    }
    etherReply.setVlanID(vlanId.toShort());
    etherReply.setSourceMACAddress(clientInterface.mac());
    if (!directlyConnected(dhcpPayload) && learnRouteFromLeasequery) {
        // if client is indirectly connected, try use next hop mac address
        MacAddress macAddress = MacAddress.valueOf(dhcpPayload.getClientHardwareAddress());
        HostId hostId = HostId.hostId(macAddress, vlanId);
        DhcpRecord record = dhcpRelayStore.getDhcpRecord(hostId).orElse(null);
        if (record != null) {
            // if next hop can be found, use mac address of next hop
            Optional<MacAddress> nextHop = record.nextHopTemp();
            if (!nextHop.isPresent()) {
                nextHop = record.nextHop();
            }
            nextHop.ifPresent(etherReply::setDestinationMACAddress);
        } else {
            // otherwise, discard the packet
            log.warn("Can't find record for host id {}, discard packet", hostId);
            return null;
        }
    } else {
        etherReply.setDestinationMACAddress(destinationMac);
    }
    udpPacket.setSourcePort(UDP.DHCP_SERVER_PORT);
    if (directlyConnected(dhcpPayload)) {
        udpPacket.setDestinationPort(UDP.DHCP_CLIENT_PORT);
    } else {
        udpPacket.setDestinationPort(UDP.DHCP_SERVER_PORT);
    }
    udpPacket.setPayload(dhcpPayload);
    ipv4Packet.setPayload(udpPacket);
    etherReply.setPayload(ipv4Packet);
    udpPacket.resetChecksum();
    return InternalPacket.internalPacket(etherReply, clientInterface.connectPoint());
}

Example 47 with MacAddress

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

the class Dhcp4HandlerImpl method handleDhcpAck.

/**
 * Send the DHCP ack to the requester host.
 * Modify Host or Route store according to the type of DHCP.
 *
 * @param ethernetPacketAck the packet
 * @param dhcpPayload the DHCP data
 */
private void handleDhcpAck(Ethernet ethernetPacketAck, DHCP dhcpPayload) {
    Optional<Interface> outInterface = getClientInterface(ethernetPacketAck, dhcpPayload);
    if (!outInterface.isPresent()) {
        log.warn("Can't find output interface for dhcp: {}", dhcpPayload);
        return;
    }
    Interface outIface = outInterface.get();
    ConnectPoint location = outIface.connectPoint();
    if (!location.port().hasName()) {
        location = translateSwitchPort(location);
    }
    HostLocation hostLocation = new HostLocation(location, System.currentTimeMillis());
    MacAddress macAddress = MacAddress.valueOf(dhcpPayload.getClientHardwareAddress());
    VlanId vlanId = getVlanIdFromRelayAgentOption(dhcpPayload);
    if (vlanId == null) {
        vlanId = outIface.vlan();
    }
    HostId hostId = HostId.hostId(macAddress, vlanId);
    Ip4Address ip = Ip4Address.valueOf(dhcpPayload.getYourIPAddress());
    if (directlyConnected(dhcpPayload)) {
        // Add to host store if it connect to network directly
        Set<IpAddress> ips = Sets.newHashSet(ip);
        Host host = hostService.getHost(hostId);
        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(macAddress, vlanId, hostLocations, ips, false);
        // Add IP address when dhcp server give the host new ip address
        providerService.hostDetected(hostId, desc, false);
    } else {
        // Add to route store if it does not connect to network directly
        // Get gateway host IP according to host mac address
        // TODO: remove relay store here
        DhcpRecord record = dhcpRelayStore.getDhcpRecord(hostId).orElse(null);
        if (record == null) {
            log.warn("Can't find DHCP record of host {}", hostId);
            return;
        }
        MacAddress gwMac = record.nextHop().orElse(null);
        if (gwMac == null) {
            log.warn("Can't find gateway mac address from record {}", record);
            return;
        }
        HostId gwHostId = HostId.hostId(gwMac, record.vlanId());
        Host gwHost = hostService.getHost(gwHostId);
        if (gwHost == null) {
            log.warn("Can't find gateway host {}", gwHostId);
            return;
        }
        Ip4Address nextHopIp = gwHost.ipAddresses().stream().filter(IpAddress::isIp4).map(IpAddress::getIp4Address).findFirst().orElse(null);
        if (nextHopIp == null) {
            log.warn("Can't find IP address of gateway {}", gwHost);
            return;
        }
        Route route = new Route(Route.Source.DHCP, ip.toIpPrefix(), nextHopIp);
        routeStore.replaceRoute(route);
    }
}

Example 48 with MacAddress

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

the class Dhcp4HandlerImpl method handleLeaseQueryUnknown.

private void handleLeaseQueryUnknown(Ethernet packet, DHCP dhcpPayload) {
    log.debug("Lease Query for Client results in DHCPLEASEUNASSIGNED or " + "DHCPLEASEUNKNOWN - removing route & forwarding reply to originator");
    if (learnRouteFromLeasequery) {
        MacAddress clientMacAddress = MacAddress.valueOf(dhcpPayload.getClientHardwareAddress());
        VlanId vlanId = VlanId.vlanId(packet.getVlanID());
        HostId hostId = HostId.hostId(clientMacAddress, vlanId);
        DhcpRecord record = dhcpRelayStore.getDhcpRecord(hostId).orElse(null);
        if (record == null) {
            log.warn("Can't find record for host {} when handling LQ UNKNOWN/UNASSIGNED message", hostId);
            return;
        }
        Ip4Address clientIP = record.ip4Address().orElse(null);
        log.debug("LQ: IP of host is " + clientIP.getIp4Address());
        // find the new NH by looking at the src MAC of the dhcp request
        // from the LQ store
        MacAddress nextHopMac = record.nextHop().orElse(null);
        log.debug("LQ: MAC of resulting *Existing* NH for that route is " + nextHopMac.toString());
        // find the next hop IP from its mac
        HostId gwHostId = HostId.hostId(nextHopMac, vlanId);
        Host gwHost = hostService.getHost(gwHostId);
        if (gwHost == null) {
            log.warn("Can't find gateway for new NH host " + gwHostId);
            return;
        }
        Ip4Address nextHopIp = gwHost.ipAddresses().stream().filter(IpAddress::isIp4).map(IpAddress::getIp4Address).findFirst().orElse(null);
        if (nextHopIp == null) {
            log.warn("Can't find IP address of gateway {}", gwHost);
            return;
        }
        log.debug("LQ: *Existing* NH IP for host is " + nextHopIp.getIp4Address() + " removing route for it");
        Route route = new Route(Route.Source.DHCP, clientIP.toIpPrefix(), nextHopIp);
        routeStore.removeRoute(route);
        // remove from temp store
        dhcpRelayStore.removeDhcpRecord(hostId);
    }
    // and forward to client
    InternalPacket ethernetPacket = processLeaseQueryFromServer(packet);
    if (ethernetPacket != null) {
        sendResponseToClient(ethernetPacket, dhcpPayload);
    }
}

Example 49 with MacAddress

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

the class Dhcp4HandlerImpl method processDhcpPacketFromClient.

/**
 * Build the DHCP discover/request packet with gateway IP(unicast packet).
 *
 * @param context the packet context
 * @param ethernetPacket the ethernet payload to process
 * @return processed packet
 */
private List<InternalPacket> processDhcpPacketFromClient(PacketContext context, Ethernet ethernetPacket, Set<Interface> clientInterfaces) {
    ConnectPoint receivedFrom = context.inPacket().receivedFrom();
    DeviceId receivedFromDevice = receivedFrom.deviceId();
    Ip4Address relayAgentIp = null;
    relayAgentIp = Dhcp4HandlerUtil.getRelayAgentIPv4Address(clientInterfaces);
    MacAddress relayAgentMac = clientInterfaces.iterator().next().mac();
    if (relayAgentIp == null || relayAgentMac == null) {
        log.warn("Missing DHCP relay agent interface Ipv4 addr config for " + "packet from client on port: {}. Aborting packet processing", clientInterfaces.iterator().next().connectPoint());
        return Lists.newArrayList();
    }
    log.debug("Multi DHCP V4 processDhcpPacketFromClient on port {}", clientInterfaces.iterator().next().connectPoint());
    // get dhcp header.
    Ethernet etherReply = (Ethernet) ethernetPacket.clone();
    IPv4 ipv4Packet = (IPv4) etherReply.getPayload();
    UDP udpPacket = (UDP) ipv4Packet.getPayload();
    DHCP dhcpPacket = (DHCP) udpPacket.getPayload();
    Ip4Address clientInterfaceIp = interfaceService.getInterfacesByPort(context.inPacket().receivedFrom()).stream().map(Interface::ipAddressesList).flatMap(Collection::stream).map(InterfaceIpAddress::ipAddress).filter(IpAddress::isIp4).map(IpAddress::getIp4Address).findFirst().orElse(null);
    if (clientInterfaceIp == null) {
        log.warn("Can't find interface IP for client interface for port {}", context.inPacket().receivedFrom());
        return Lists.newArrayList();
    }
    boolean isDirectlyConnected = directlyConnected(dhcpPacket);
    boolean directConnFlag = directlyConnected(dhcpPacket);
    // Multi DHCP Start
    ConnectPoint clientConnectionPoint = context.inPacket().receivedFrom();
    VlanId vlanIdInUse = VlanId.vlanId(ethernetPacket.getVlanID());
    Interface clientInterface = interfaceService.getInterfacesByPort(clientConnectionPoint).stream().filter(iface -> Dhcp4HandlerUtil.interfaceContainsVlan(iface, vlanIdInUse)).findFirst().orElse(null);
    List<InternalPacket> internalPackets = new ArrayList<>();
    List<DhcpServerInfo> serverInfoList = findValidServerInfo(directConnFlag);
    List<DhcpServerInfo> copyServerInfoList = new ArrayList<DhcpServerInfo>(serverInfoList);
    boolean serverFound = false;
    for (DhcpServerInfo serverInfo : copyServerInfoList) {
        etherReply = (Ethernet) ethernetPacket.clone();
        ipv4Packet = (IPv4) etherReply.getPayload();
        udpPacket = (UDP) ipv4Packet.getPayload();
        dhcpPacket = (DHCP) udpPacket.getPayload();
        if (!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;
        }
        Ip4Address ipFacingServer = getFirstIpFromInterface(serverInterface);
        MacAddress macFacingServer = serverInterface.mac();
        log.debug("Interfacing server {} Mac : {} ", ipFacingServer, macFacingServer);
        if (ipFacingServer == null || macFacingServer == null) {
            log.debug("No IP address for server Interface {}", serverInterface);
            continue;
        }
        serverFound = true;
        log.debug("Server Info Found {}", serverInfo.getDhcpConnectMac());
        etherReply.setSourceMACAddress(macFacingServer);
        // set default info and replace with indirect if available later on.
        if (newServerInfo.getDhcpConnectMac().isPresent()) {
            etherReply.setDestinationMACAddress(newServerInfo.getDhcpConnectMac().get());
        }
        if (newServerInfo.getDhcpConnectVlan().isPresent()) {
            etherReply.setVlanID(newServerInfo.getDhcpConnectVlan().get().toShort());
        }
        ipv4Packet.setSourceAddress(ipFacingServer.toInt());
        ipv4Packet.setDestinationAddress(newServerInfo.getDhcpServerIp4().get().toInt());
        log.debug("Directly connected {}", isDirectlyConnected);
        log.debug("DHCP server IP: {}", newServerInfo.getDhcpServerIp4().get());
        if (isDirectlyConnected) {
            log.debug("Default DHCP server IP: {}", newServerInfo.getDhcpServerIp4().get());
            if (newServerInfo.getDhcpConnectMac().isPresent()) {
                etherReply.setDestinationMACAddress(newServerInfo.getDhcpConnectMac().get());
            }
            if (newServerInfo.getDhcpConnectVlan().isPresent()) {
                etherReply.setVlanID(newServerInfo.getDhcpConnectVlan().get().toShort());
            }
            ipv4Packet.setDestinationAddress(newServerInfo.getDhcpServerIp4().get().toInt());
            ConnectPoint inPort = context.inPacket().receivedFrom();
            VlanId vlanId = VlanId.vlanId(ethernetPacket.getVlanID());
            // add connected in port and vlan
            CircuitId cid = new CircuitId(inPort.toString(), vlanId);
            byte[] circuitId = cid.serialize();
            DhcpOption circuitIdSubOpt = new DhcpOption();
            circuitIdSubOpt.setCode(CIRCUIT_ID.getValue()).setLength((byte) circuitId.length).setData(circuitId);
            DhcpRelayAgentOption newRelayAgentOpt = new DhcpRelayAgentOption();
            newRelayAgentOpt.setCode(OptionCode_CircuitID.getValue());
            newRelayAgentOpt.addSubOption(circuitIdSubOpt);
            // Removes END option first
            List<DhcpOption> options = dhcpPacket.getOptions().stream().filter(opt -> opt.getCode() != OptionCode_END.getValue()).collect(Collectors.toList());
            // push relay agent option
            options.add(newRelayAgentOpt);
            // make sure option 255(End) is the last option
            DhcpOption endOption = new DhcpOption();
            endOption.setCode(OptionCode_END.getValue());
            options.add(endOption);
            dhcpPacket.setOptions(options);
            relayAgentIp = serverInfo.getRelayAgentIp4(receivedFromDevice).orElse(null);
            // Sets relay agent IP
            int effectiveRelayAgentIp = relayAgentIp != null ? relayAgentIp.toInt() : clientInterfaceIp.toInt();
            dhcpPacket.setGatewayIPAddress(effectiveRelayAgentIp);
            log.debug("In Default, Relay Agent IP {}", effectiveRelayAgentIp);
        } else {
            if (!newServerInfo.getDhcpServerIp4().isPresent()) {
            // do nothing
            } else if (!newServerInfo.getDhcpConnectMac().isPresent()) {
                continue;
            } else {
                relayAgentIp = newServerInfo.getRelayAgentIp4(receivedFromDevice).orElse(null);
                // Sets relay agent IP
                int effectiveRelayAgentIp = relayAgentIp != null ? relayAgentIp.toInt() : clientInterfaceIp.toInt();
                Ip4Address effectiveRealRealyAgentIP = relayAgentIp != null ? relayAgentIp : clientInterfaceIp;
                dhcpPacket.setGatewayIPAddress(effectiveRelayAgentIp);
                ipv4Packet.setSourceAddress(effectiveRealRealyAgentIP.toInt());
                log.debug("Source IP address set as relay agent IP with value: {}", effectiveRealRealyAgentIP);
            }
        }
        // Remove broadcast flag
        dhcpPacket.setFlags((short) 0);
        udpPacket.setPayload(dhcpPacket);
        // As a DHCP relay, the source port should be server port( instead
        // of client port.
        udpPacket.setSourcePort(UDP.DHCP_SERVER_PORT);
        udpPacket.setDestinationPort(UDP.DHCP_SERVER_PORT);
        ipv4Packet.setPayload(udpPacket);
        ipv4Packet.setTtl((byte) 64);
        etherReply.setPayload(ipv4Packet);
        InternalPacket internalPacket = InternalPacket.internalPacket(etherReply, serverInfo.getDhcpServerConnectPoint().get());
        internalPackets.add(internalPacket);
    }
    if (!serverFound) {
        log.warn("ProcessDhcp4PacketFromClient No Server Found");
    }
    return internalPackets;
}

Example 50 with MacAddress

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

the class Dhcp4HandlerImpl method getHostInfoForServerInfo.

/**
 * 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.debug("DHCP server {} host info found. ConnectPt{}  Mac {} vlan {}", serverInfo.getDhcpServerIp4(), dhcpServerConnectPoint, dhcpServerConnectMac, dhcpConnectVlan);
    } else {
        log.debug("DHCP server {} not resolve yet connectPt {} mac {} vlan {}", serverInfo.getDhcpServerIp4(), dhcpServerConnectPoint, dhcpServerConnectMac, dhcpConnectVlan);
        Ip4Address ipToProbe;
        if (serverInfo.getDhcpGatewayIp4().isPresent()) {
            ipToProbe = serverInfo.getDhcpGatewayIp4().get();
        } else {
            ipToProbe = serverInfo.getDhcpServerIp4().orElse(null);
        }
        String hostToProbe = serverInfo.getDhcpGatewayIp6().map(ip -> "gateway").orElse("server");
        log.debug("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.debug("No host found host ip {} dynamically", ipToProbe);
        }
    }
    return newServerInfo;
}