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

Example 16 with ARP

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

the class OpenFlowPacketProviderTest method emit.

@Test
public void emit() {
    MacAddress mac1 = MacAddress.of("00:00:00:11:00:01");
    MacAddress mac2 = MacAddress.of("00:00:00:22:00:02");
    ARP arp = new ARP();
    arp.setSenderProtocolAddress(ANY).setSenderHardwareAddress(mac1.getBytes()).setTargetHardwareAddress(mac2.getBytes()).setTargetProtocolAddress(ANY).setHardwareType((short) 0).setProtocolType((short) 0).setHardwareAddressLength((byte) 6).setProtocolAddressLength((byte) 4).setOpCode((byte) 0);
    Ethernet eth = new Ethernet();
    eth.setVlanID(VLANID).setEtherType(Ethernet.TYPE_ARP).setSourceMACAddress("00:00:00:11:00:01").setDestinationMACAddress("00:00:00:22:00:02").setPayload(arp);
    // the should-be working setup.
    OutboundPacket passPkt = outPacket(DID, TR, eth);
    sw.setRole(RoleState.MASTER);
    provider.emit(passPkt);
    assertEquals("invalid switch", sw, controller.current);
    assertEquals("message not sent", PLIST.size(), sw.sent.size());
    sw.sent.clear();
    // Send with different IN_PORT
    OutboundPacket inPortPkt = outPacket(DID, TR_ALL, eth, IN_PORT);
    sw.setRole(RoleState.MASTER);
    provider.emit(inPortPkt);
    assertEquals("invalid switch", sw, controller.current);
    assertEquals("message not sent", PLIST_ALL.size(), sw.sent.size());
    OFMessage ofMessage = sw.sent.get(0);
    assertEquals("Wrong OF message type", OFType.PACKET_OUT, ofMessage.getType());
    OFPacketOut packetOut = (OFPacketOut) ofMessage;
    assertEquals("Wrong in port", OFPort.of(IN_PORT_PN), packetOut.getInPort());
    assertEquals("Unexpected number of actions", 1, packetOut.getActions().size());
    OFAction ofAction = packetOut.getActions().get(0);
    assertEquals("Packet out action should be type output", OFActionType.OUTPUT, ofAction.getType());
    OFActionOutput ofActionOutput = (OFActionOutput) ofAction;
    assertEquals("Output should be ALL", OFPort.ALL, ofActionOutput.getPort());
    sw.sent.clear();
    // wrong Role
    // sw.setRole(RoleState.SLAVE);
    // provider.emit(passPkt);
    // assertEquals("invalid switch", sw, controller.current);
    // assertEquals("message sent incorrectly", 0, sw.sent.size());
    // sw.setRole(RoleState.MASTER);
    // missing switch
    OutboundPacket swFailPkt = outPacket(DID_MISSING, TR, eth);
    provider.emit(swFailPkt);
    assertNull("invalid switch", controller.current);
    assertEquals("message sent incorrectly", 0, sw.sent.size());
// to missing port
// OutboundPacket portFailPkt = outPacket(DID, TR_MISSING, eth);
// provider.emit(portFailPkt);
// assertEquals("extra message sent", 1, sw.sent.size());
}

Example 17 with ARP

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

the class K8sSwitchingArpHandler method processArpReply.

private void processArpReply(PacketContext context, Ethernet ethPacket) {
    ARP arpPacket = (ARP) ethPacket.getPayload();
    IpAddress srcIp = IpAddress.valueOf(INET, arpPacket.getSenderProtocolAddress());
    MacAddress srcMac = MacAddress.valueOf(arpPacket.getSenderHardwareAddress());
    IpAddress dstIp = IpAddress.valueOf(INET, arpPacket.getTargetProtocolAddress());
    if (dstIp.equals(IpAddress.valueOf(NODE_FAKE_IP_STR))) {
        // mutable MAP scenario is not considered for now
        if (!extHostMacStore.containsKey(srcIp)) {
            extHostMacStore.put(srcIp, srcMac);
        }
        K8sNode k8sNode = k8sNodeService.nodes().stream().filter(n -> n.nodeIp().equals(srcIp)).findAny().orElse(null);
        if (k8sNode == null) {
            return;
        } else {
            if (k8sNode.nodeInfo().nodeMac() != null) {
                return;
            }
        }
        // we update node MAC address which will be referred in node port scenario
        K8sNodeInfo nodeInfo = new K8sNodeInfo(k8sNode.nodeIp(), srcMac);
        K8sNode updatedNode = k8sNode.updateNodeInfo(nodeInfo);
        k8sNodeService.updateNode(updatedNode);
    }
}

Example 18 with ARP

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

the class NeighbourTestUtils method createArpRequest.

/**
 * Creates an ARP request for the given target IP.
 *
 * @param targetIp IP address
 * @return ARP request packet
 */
public static Ethernet createArpRequest(IpAddress targetIp) {
    Ethernet eth = new Ethernet();
    eth.setDestinationMACAddress(MAC1);
    eth.setSourceMACAddress(MAC2);
    eth.setEtherType(Ethernet.TYPE_ARP);
    ARP arp = new ARP();
    arp.setOpCode(ARP.OP_REPLY);
    arp.setProtocolType(ARP.PROTO_TYPE_IP);
    arp.setHardwareType(ARP.HW_TYPE_ETHERNET);
    arp.setProtocolAddressLength((byte) Ip4Address.BYTE_LENGTH);
    arp.setHardwareAddressLength((byte) Ethernet.DATALAYER_ADDRESS_LENGTH);
    arp.setSenderHardwareAddress(MAC2.toBytes());
    arp.setTargetHardwareAddress(MacAddress.ZERO.toBytes());
    arp.setTargetProtocolAddress(targetIp.toOctets());
    arp.setSenderProtocolAddress(IP2.toOctets());
    eth.setPayload(arp);
    return eth;
}

Example 19 with ARP

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

the class OpenstackRoutingArpHandler method processArpPacket.

private void processArpPacket(PacketContext context, Ethernet ethernet) {
    ARP arp = (ARP) ethernet.getPayload();
    if (arp.getOpCode() == ARP.OP_REQUEST && ARP_PROXY_MODE.equals(getArpMode())) {
        if (log.isTraceEnabled()) {
            log.trace("ARP request received from {} for {}", Ip4Address.valueOf(arp.getSenderProtocolAddress()).toString(), Ip4Address.valueOf(arp.getTargetProtocolAddress()).toString());
        }
        IpAddress targetIp = Ip4Address.valueOf(arp.getTargetProtocolAddress());
        MacAddress targetMac = null;
        NetFloatingIP floatingIP = osRouterAdminService.floatingIps().stream().filter(ip -> ip.getFloatingIpAddress().equals(targetIp.toString())).findAny().orElse(null);
        // In case target ip is for associated floating ip, sets target mac to vm's.
        if (floatingIP != null && floatingIP.getPortId() != null) {
            InstancePort instPort = instancePortService.instancePort(floatingIP.getPortId());
            if (instPort == null) {
                log.trace("Unknown target ARP request for {}, ignore it", targetIp);
                return;
            } else {
                targetMac = instPort.macAddress();
            }
            OpenstackNode gw = getGwByInstancePort(osNodeService.completeNodes(GATEWAY), instPort);
            if (gw == null) {
                return;
            }
            // if the ARP packet_in received from non-relevant GWs, we simply ignore it
            if (!Objects.equals(gw.intgBridge(), context.inPacket().receivedFrom().deviceId())) {
                return;
            }
        }
        if (isExternalGatewaySourceIp(targetIp)) {
            targetMac = Constants.DEFAULT_GATEWAY_MAC;
        }
        if (targetMac == null) {
            log.trace("Unknown target ARP request for {}, ignore it", targetIp);
            return;
        }
        Ethernet ethReply = ARP.buildArpReply(targetIp.getIp4Address(), targetMac, ethernet);
        TrafficTreatment treatment = DefaultTrafficTreatment.builder().setOutput(context.inPacket().receivedFrom().port()).build();
        packetService.emit(new DefaultOutboundPacket(context.inPacket().receivedFrom().deviceId(), treatment, ByteBuffer.wrap(ethReply.serialize())));
        context.block();
    }
    if (arp.getOpCode() == ARP.OP_REPLY) {
        ConnectPoint cp = context.inPacket().receivedFrom();
        PortNumber receivedPortNum = cp.port();
        IpAddress spa = Ip4Address.valueOf(arp.getSenderProtocolAddress());
        MacAddress sha = MacAddress.valueOf(arp.getSenderHardwareAddress());
        log.debug("ARP reply ip: {}, mac: {}", spa, sha);
        try {
            Set<String> extRouterIps = osNetworkService.externalPeerRouters().stream().map(r -> r.ipAddress().toString()).collect(Collectors.toSet());
            // if SPA is NOT contained in existing external router IP set, we ignore it
            if (!extRouterIps.contains(spa.toString())) {
                return;
            }
            OpenstackNode node = osNodeService.node(cp.deviceId());
            if (node == null) {
                return;
            }
            // we only handles the ARP-Reply message received by gateway node
            if (node.type() != GATEWAY) {
                return;
            }
            if (receivedPortNum.equals(node.uplinkPortNum())) {
                osNetworkAdminService.updateExternalPeerRouterMac(spa, sha);
            }
        } catch (Exception e) {
            log.error("Exception occurred because of {}", e);
        }
    }
}

Example 20 with ARP

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

the class OpenstackSwitchingArpHandler method processPacketIn.

/**
 * Processes ARP request packets.
 * It checks if the target IP is owned by a known host first and then ask to
 * OpenStack if it's not. This ARP proxy does not support overlapping IP.
 *
 * @param context   packet context
 * @param ethPacket ethernet packet
 */
private void processPacketIn(PacketContext context, Ethernet ethPacket) {
    // if the ARP mode is configured as broadcast mode, we simply ignore ARP packet_in
    if (ARP_BROADCAST_MODE.equals(getArpMode())) {
        return;
    }
    ARP arpPacket = (ARP) ethPacket.getPayload();
    if (arpPacket.getOpCode() != ARP.OP_REQUEST) {
        return;
    }
    InstancePort srcInstPort = instancePortService.instancePort(ethPacket.getSourceMAC());
    if (srcInstPort == null) {
        log.trace("Failed to find source instance port(MAC:{})", ethPacket.getSourceMAC());
        return;
    }
    IpAddress targetIp = Ip4Address.valueOf(arpPacket.getTargetProtocolAddress());
    MacAddress replyMac = isGatewayIp(targetIp) ? MacAddress.valueOf(gatewayMac) : getMacFromHostOpenstack(targetIp, srcInstPort.networkId());
    if (replyMac == MacAddress.NONE) {
        log.trace("Failed to find MAC address for {}", targetIp);
        return;
    }
    Ethernet ethReply = ARP.buildArpReply(targetIp.getIp4Address(), replyMac, ethPacket);
    TrafficTreatment treatment = DefaultTrafficTreatment.builder().setOutput(context.inPacket().receivedFrom().port()).build();
    packetService.emit(new DefaultOutboundPacket(context.inPacket().receivedFrom().deviceId(), treatment, ByteBuffer.wrap(ethReply.serialize())));
}