Examples with NEIGHBOR_SOLICITATION org.onlab.packet.ICMP6.NEIGHBOR_SOLICITATION used on opensource projects

Example 1 with NEIGHBOR_SOLICITATION

use of org.onlab.packet.ICMP6.NEIGHBOR_SOLICITATION in project onos by opennetworkinglab.

the class DefaultNeighbourMessageContext method createNdpContext.

/**
 * Extracts context information from NDP packets.
 *
 * @param eth input Ethernet frame that is thought to be NDP
 * @param inPort in port
 * @param actions actions to take
 * @return MessageContext object if the packet was a valid NDP packet,
 * otherwise null
 */
private static NeighbourMessageContext createNdpContext(Ethernet eth, ConnectPoint inPort, NeighbourMessageActions actions) {
    if (eth.getEtherType() != Ethernet.TYPE_IPV6) {
        return null;
    }
    IPv6 ipv6 = (IPv6) eth.getPayload();
    if (ipv6.getNextHeader() != IPv6.PROTOCOL_ICMP6) {
        return null;
    }
    ICMP6 icmpv6 = (ICMP6) ipv6.getPayload();
    IpAddress sender = Ip6Address.valueOf(ipv6.getSourceAddress());
    IpAddress target;
    NeighbourMessageType type;
    if (icmpv6.getIcmpType() == ICMP6.NEIGHBOR_SOLICITATION) {
        type = NeighbourMessageType.REQUEST;
        NeighborSolicitation nsol = (NeighborSolicitation) icmpv6.getPayload();
        target = Ip6Address.valueOf(nsol.getTargetAddress());
    } else if (icmpv6.getIcmpType() == ICMP6.NEIGHBOR_ADVERTISEMENT) {
        type = NeighbourMessageType.REPLY;
        /*
             * sender and target are the same in the reply.
             * We use as target the destination ip.
             */
        target = Ip6Address.valueOf(ipv6.getDestinationAddress());
    } else {
        return null;
    }
    return new DefaultNeighbourMessageContext(actions, eth, inPort, NeighbourProtocol.NDP, type, target, sender);
}

Example 2 with NEIGHBOR_SOLICITATION

use of org.onlab.packet.ICMP6.NEIGHBOR_SOLICITATION in project onos by opennetworkinglab.

the class NeighborAdvertisement method buildNdpAdv.

/**
 * Builds an NDP reply based on a request.
 *
 * @param srcIp   the IP address to use as the reply source
 * @param srcMac  the MAC address to use as the reply source
 * @param request the Neighbor Solicitation request we got
 * @return an Ethernet frame containing the Neighbor Advertisement reply
 */
public static Ethernet buildNdpAdv(Ip6Address srcIp, MacAddress srcMac, Ethernet request) {
    checkNotNull(srcIp, "IP address cannot be null");
    checkNotNull(srcMac, "MAC address cannot be null");
    checkNotNull(request, "Request cannot be null");
    checkArgument(request.getEtherType() == Ethernet.TYPE_IPV6, "EtherType must be IPv6");
    final IPv6 ipv6Request = (IPv6) request.getPayload();
    checkArgument(ipv6Request.getNextHeader() == IPv6.PROTOCOL_ICMP6, "Protocol must be ICMP6");
    final ICMP6 icmpv6 = (ICMP6) ipv6Request.getPayload();
    checkArgument(icmpv6.getIcmpType() == ICMP6.NEIGHBOR_SOLICITATION, "ICMP6 type must be NEIGHBOR_SOLICITATION");
    Ethernet eth = new Ethernet();
    eth.setDestinationMACAddress(request.getSourceMAC());
    eth.setSourceMACAddress(srcMac);
    eth.setEtherType(Ethernet.TYPE_IPV6);
    eth.setVlanID(request.getVlanID());
    IPv6 ipv6 = new IPv6();
    ipv6.setSourceAddress(srcIp.toOctets());
    ipv6.setDestinationAddress(ipv6Request.getSourceAddress());
    ipv6.setHopLimit(NDP_HOP_LIMIT);
    ipv6.setNextHeader(IPv6.PROTOCOL_ICMP6);
    ICMP6 icmp6 = new ICMP6();
    icmp6.setIcmpType(ICMP6.NEIGHBOR_ADVERTISEMENT);
    icmp6.setIcmpCode(RESERVED_CODE);
    NeighborAdvertisement nadv = new NeighborAdvertisement();
    nadv.setTargetAddress(srcIp.toOctets());
    nadv.setSolicitedFlag(NDP_SOLICITED_FLAG);
    nadv.setOverrideFlag(NDP_OVERRIDE_FLAG);
    nadv.addOption(NeighborDiscoveryOptions.TYPE_TARGET_LL_ADDRESS, srcMac.toBytes());
    icmp6.setPayload(nadv);
    ipv6.setPayload(icmp6);
    eth.setPayload(ipv6);
    return eth;
}

Example 3 with NEIGHBOR_SOLICITATION

use of org.onlab.packet.ICMP6.NEIGHBOR_SOLICITATION in project onos by opennetworkinglab.

the class NeighborSolicitation method buildNdpSolicit.

/**
 * Builds a NDP solicitation using the supplied parameters.
 *
 * @param targetIp the target ip
 * @param sourceIp the source ip
 * @param destinationIp the destination ip
 * @param sourceMac the source mac address
 * @param destinationMac the destination mac address
 * @param vlan the vlan id
 * @return the ethernet packet containing the ndp solicitation
 */
public static Ethernet buildNdpSolicit(Ip6Address targetIp, Ip6Address sourceIp, Ip6Address destinationIp, MacAddress sourceMac, MacAddress destinationMac, VlanId vlan) {
    checkNotNull(targetIp, "Target IP address cannot be null");
    checkNotNull(sourceIp, "Source IP address cannot be null");
    checkNotNull(destinationIp, "Destination IP address cannot be null");
    checkNotNull(sourceMac, "Source MAC address cannot be null");
    checkNotNull(destinationMac, "Destination MAC address cannot be null");
    checkNotNull(vlan, "Vlan cannot be null");
    // Here we craft the Ethernet packet.
    Ethernet ethernet = new Ethernet();
    ethernet.setEtherType(Ethernet.TYPE_IPV6).setDestinationMACAddress(destinationMac).setSourceMACAddress(sourceMac);
    ethernet.setVlanID(vlan.id());
    // IPv6 packet is created.
    IPv6 ipv6 = new IPv6();
    ipv6.setSourceAddress(sourceIp.toOctets());
    ipv6.setDestinationAddress(destinationIp.toOctets());
    ipv6.setHopLimit(NDP_HOP_LIMIT);
    // Create the ICMPv6 packet.
    ICMP6 icmp6 = new ICMP6();
    icmp6.setIcmpType(ICMP6.NEIGHBOR_SOLICITATION);
    icmp6.setIcmpCode(RESERVED_CODE);
    // Create the Neighbor Solicitation packet.
    NeighborSolicitation ns = new NeighborSolicitation();
    ns.setTargetAddress(targetIp.toOctets());
    // DAD packets should not contain SRC_LL_ADDR option
    if (!Arrays.equals(sourceIp.toOctets(), Ip6Address.ZERO.toOctets())) {
        ns.addOption(NeighborDiscoveryOptions.TYPE_SOURCE_LL_ADDRESS, sourceMac.toBytes());
    }
    // Set the payloads
    icmp6.setPayload(ns);
    ipv6.setPayload(icmp6);
    ethernet.setPayload(ipv6);
    return ethernet;
}

Example 4 with NEIGHBOR_SOLICITATION

use of org.onlab.packet.ICMP6.NEIGHBOR_SOLICITATION in project onos by opennetworkinglab.

the class NeighborAdvertisementTest method testBuildNdpAdv.

/**
 * Test Neighbor Advertisement reply build.
 */
@Test
public void testBuildNdpAdv() {
    Ethernet eth = new Ethernet();
    eth.setSourceMACAddress(MAC_ADDRESS);
    eth.setDestinationMACAddress(MAC_ADDRESS2);
    IPv6 ipv6 = new IPv6();
    ipv6.setSourceAddress(IPV6_SOURCE_ADDRESS);
    ipv6.setDestinationAddress(IPV6_DESTINATION_ADDRESS);
    ipv6.setNextHeader(IPv6.PROTOCOL_ICMP6);
    eth.setEtherType(Ethernet.TYPE_IPV6);
    eth.setPayload(ipv6);
    ICMP6 icmp6 = new ICMP6();
    icmp6.setIcmpType(ICMP6.NEIGHBOR_SOLICITATION);
    icmp6.setIcmpCode(NeighborAdvertisement.RESERVED_CODE);
    ipv6.setPayload(icmp6);
    final Ethernet ethResponse = NeighborAdvertisement.buildNdpAdv(IP_6_ADDRESS, MAC_ADDRESS2, eth);
    assertTrue(ethResponse.getDestinationMAC().equals(MAC_ADDRESS));
    assertTrue(ethResponse.getSourceMAC().equals(MAC_ADDRESS2));
    assertTrue(ethResponse.getEtherType() == Ethernet.TYPE_IPV6);
    final IPv6 responseIpv6 = (IPv6) ethResponse.getPayload();
    assertArrayEquals(responseIpv6.getSourceAddress(), ipv6.getDestinationAddress());
    assertArrayEquals(responseIpv6.getDestinationAddress(), ipv6.getSourceAddress());
    assertTrue(responseIpv6.getNextHeader() == IPv6.PROTOCOL_ICMP6);
    final ICMP6 responseIcmp6 = (ICMP6) responseIpv6.getPayload();
    assertTrue(responseIcmp6.getIcmpType() == ICMP6.NEIGHBOR_ADVERTISEMENT);
    assertTrue(responseIcmp6.getIcmpCode() == NeighborAdvertisement.RESERVED_CODE);
    final NeighborAdvertisement responseNadv = (NeighborAdvertisement) responseIcmp6.getPayload();
    assertArrayEquals(responseNadv.getTargetAddress(), IPV6_DESTINATION_ADDRESS);
    assertTrue(responseNadv.getSolicitedFlag() == NeighborAdvertisement.NDP_SOLICITED_FLAG);
    assertTrue(responseNadv.getOverrideFlag() == NeighborAdvertisement.NDP_OVERRIDE_FLAG);
    assertThat(responseNadv.getOptions(), hasItem(hasOption(NeighborDiscoveryOptions.TYPE_TARGET_LL_ADDRESS, MAC_ADDRESS2.toBytes())));
}