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

Example 11 with ARP

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

the class KubevirtNetworkingUtil method buildGarpPacket.

/**
 * Builds a GARP packet using the given source MAC and source IP address.
 *
 * @param srcMac source MAC address
 * @param srcIp  source IP address
 * @return GARP packet
 */
public static Ethernet buildGarpPacket(MacAddress srcMac, IpAddress srcIp) {
    if (srcMac == null || srcIp == null) {
        return null;
    }
    Ethernet ethernet = new Ethernet();
    ethernet.setDestinationMACAddress(MacAddress.BROADCAST);
    ethernet.setSourceMACAddress(srcMac);
    ethernet.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(srcMac.toBytes());
    arp.setTargetHardwareAddress(MacAddress.BROADCAST.toBytes());
    arp.setSenderProtocolAddress(srcIp.toOctets());
    arp.setTargetProtocolAddress(srcIp.toOctets());
    ethernet.setPayload(arp);
    return ethernet;
}

Example 12 with ARP

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

the class OpenstackNetworkingUtil method buildGratuitousArpPacket.

/**
 * Returns GARP packet with supplied floating ip and instance port information.
 *
 * @param floatingIP floating ip
 * @param instancePort instance port
 * @param vlanId vlan id
 * @return GARP packet
 */
private static Ethernet buildGratuitousArpPacket(NetFloatingIP floatingIP, InstancePort instancePort, VlanId vlanId) {
    Ethernet ethernet = new Ethernet();
    ethernet.setDestinationMACAddress(MacAddress.BROADCAST);
    ethernet.setSourceMACAddress(instancePort.macAddress());
    ethernet.setEtherType(Ethernet.TYPE_ARP);
    ethernet.setVlanID(vlanId.id());
    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(instancePort.macAddress().toBytes());
    arp.setTargetHardwareAddress(MacAddress.BROADCAST.toBytes());
    arp.setSenderProtocolAddress(valueOf(floatingIP.getFloatingIpAddress()).toInt());
    arp.setTargetProtocolAddress(valueOf(floatingIP.getFloatingIpAddress()).toInt());
    ethernet.setPayload(arp);
    return ethernet;
}

Example 13 with ARP

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

the class OpenstackSwitchingArpHandler method setFakeGatewayArpRule.

/**
 * Installs flow rules which convert ARP request packet into ARP reply
 * by adding a fake gateway MAC address as Source Hardware Address.
 *
 * @param osSubnet  openstack subnet
 * @param network   openstack network
 * @param install   flag which indicates whether to install rule or remove rule
 * @param osNode    openstack node
 */
private void setFakeGatewayArpRule(Subnet osSubnet, Network network, boolean install, OpenstackNode osNode) {
    if (ARP_BROADCAST_MODE.equals(getArpMode())) {
        Type netType = osNetworkService.networkType(network.getId());
        String gateway = osSubnet.getGateway();
        if (gateway == null) {
            return;
        }
        TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder();
        if (netType == VLAN) {
            sBuilder.matchVlanId(VlanId.vlanId(network.getProviderSegID()));
        } else if (netType == VXLAN || netType == GRE || netType == GENEVE) {
            // different networks
            if (!install) {
                long numOfDupGws = osNetworkService.subnets().stream().filter(s -> !s.getId().equals(osSubnet.getId())).filter(s -> s.getGateway() != null).filter(s -> s.getGateway().equals(osSubnet.getGateway())).count();
                if (numOfDupGws > 0) {
                    return;
                }
            }
        }
        sBuilder.matchEthType(EthType.EtherType.ARP.ethType().toShort()).matchArpOp(ARP.OP_REQUEST).matchArpTpa(Ip4Address.valueOf(gateway));
        if (osNode == null) {
            osNodeService.completeNodes(COMPUTE).forEach(n -> {
                Device device = deviceService.getDevice(n.intgBridge());
                TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder();
                if (netType == VLAN) {
                    tBuilder.popVlan();
                }
                tBuilder.extension(buildMoveEthSrcToDstExtension(device), device.id()).extension(buildMoveArpShaToThaExtension(device), device.id()).extension(buildMoveArpSpaToTpaExtension(device), device.id()).setArpOp(ARP.OP_REPLY).setArpSha(MacAddress.valueOf(gatewayMac)).setArpSpa(Ip4Address.valueOf(gateway)).setEthSrc(MacAddress.valueOf(gatewayMac)).setOutput(PortNumber.IN_PORT);
                osFlowRuleService.setRule(appId, n.intgBridge(), sBuilder.build(), tBuilder.build(), PRIORITY_ARP_GATEWAY_RULE, ARP_TABLE, install);
            });
        } else {
            Device device = deviceService.getDevice(osNode.intgBridge());
            TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder();
            if (netType == VLAN) {
                tBuilder.popVlan();
            }
            tBuilder.extension(buildMoveEthSrcToDstExtension(device), device.id()).extension(buildMoveArpShaToThaExtension(device), device.id()).extension(buildMoveArpSpaToTpaExtension(device), device.id()).setArpOp(ARP.OP_REPLY).setArpSha(MacAddress.valueOf(gatewayMac)).setArpSpa(Ip4Address.valueOf(gateway)).setOutput(PortNumber.IN_PORT);
            osFlowRuleService.setRule(appId, osNode.intgBridge(), sBuilder.build(), tBuilder.build(), PRIORITY_ARP_GATEWAY_RULE, ARP_TABLE, install);
        }
    }
}

Example 14 with ARP

use of org.onlab.packet.ARP in project trellis-control by opennetworkinglab.

the class ArpHandler method validateArpSpa.

/**
 * Check if the source protocol address of an ARP packet belongs to the same
 * subnet configured on the port it is seen.
 *
 * @param pkt ARP packet and context information
 * @return true if the source protocol address belongs to the configured subnet
 */
private boolean validateArpSpa(NeighbourMessageContext pkt) {
    Ip4Address spa = pkt.sender().getIp4Address();
    Set<IpPrefix> subnet = config.getPortSubnets(pkt.inPort().deviceId(), pkt.inPort().port()).stream().filter(ipPrefix -> ipPrefix.isIp4() && ipPrefix.contains(spa)).collect(Collectors.toSet());
    return !subnet.isEmpty();
}

Example 15 with ARP

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

the class DhcpRelayManagerTest method testArpRequest.

@Test
public void testArpRequest() throws Exception {
    packetService.processPacket(new TestArpRequestPacketContext(CLIENT_INTERFACE));
    assertAfter(PKT_PROCESSING_MS, () -> assertNotNull(packetService.emittedPacket));
    OutboundPacket outboundPacket = packetService.emittedPacket;
    byte[] outPacketData = outboundPacket.data().array();
    Ethernet eth = Ethernet.deserializer().deserialize(outPacketData, 0, outPacketData.length);
    assertAfter(PKT_PROCESSING_MS, () -> assertEquals(eth.getEtherType(), Ethernet.TYPE_ARP));
    ARP arp = (ARP) eth.getPayload();
    assertAfter(PKT_PROCESSING_MS, () -> assertArrayEquals(arp.getSenderHardwareAddress(), CLIENT_INTERFACE.mac().toBytes()));
}