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

Example 21 with ICMP

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

the class IcmpHandlerTest method testPing4RemoteGatewayLeaf1Down.

// Ping to a gateway but one of the destination leaf is down
@Test
public void testPing4RemoteGatewayLeaf1Down() {
    // Expected behavior
    expect(segmentRoutingManager.deviceService.isAvailable(LOCAL_LEAF1)).andReturn(false).times(1);
    expect(segmentRoutingManager.deviceService.isAvailable(LOCAL_LEAF2)).andReturn(true).times(1);
    replay(segmentRoutingManager.deviceService);
    // Process
    icmpHandler.processIcmp(ETH_REQ_IPV41, CP11);
    // Verify packet-out
    Ethernet ethernet = packetService.getEthernetPacket(ETH_REQ_IPV41.getSourceMAC());
    assertNotNull(ethernet);
    assertThat(ethernet.getSourceMAC(), is(ETH_REQ_IPV41.getDestinationMAC()));
    assertThat(ethernet.getDestinationMAC(), is(ETH_REQ_IPV41.getSourceMAC()));
    assertThat(ethernet.getEtherType(), is(Ethernet.MPLS_UNICAST));
    assertTrue(ethernet.getPayload() instanceof MPLS);
    MPLS mpls = (MPLS) ethernet.getPayload();
    assertThat(mpls.getLabel(), is(LOCAL_LEAF2_SID4));
    assertTrue(mpls.getPayload() instanceof IPv4);
    IPv4 ip = (IPv4) mpls.getPayload();
    assertThat(ip.getSourceAddress(), is(DST_IPV4.toInt()));
    assertThat(ip.getDestinationAddress(), is(SRC_IPV41.toInt()));
    assertTrue(ip.getPayload() instanceof ICMP);
    ICMP icmp = (ICMP) ip.getPayload();
    assertThat(icmp.getIcmpType(), is(TYPE_ECHO_REPLY));
    assertThat(icmp.getIcmpCode(), is(CODE_ECHO_REPLY));
    // Verify behavior
    verify(segmentRoutingManager.deviceService);
}

Example 22 with ICMP

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

the class IcmpHandler method sendIcmpv6Response.

/**
 * Sends an ICMPv6 reply message.
 *
 * @param ethRequest the original ICMP request
 * @param outport the output port where the ICMP reply should be sent to
 */
private void sendIcmpv6Response(Ethernet ethRequest, ConnectPoint outport) {
    int destSid = -1;
    Ethernet ethReply = ICMP6.buildIcmp6Reply(ethRequest);
    IPv6 icmpRequestIpv6 = (IPv6) ethRequest.getPayload();
    IPv6 icmpReplyIpv6 = (IPv6) ethRequest.getPayload();
    // Source IP of the echo "reply"
    Ip6Address srcIpAddress = Ip6Address.valueOf(icmpRequestIpv6.getDestinationAddress());
    // Destination IP of the echo "reply"
    Ip6Address destIpAddress = Ip6Address.valueOf(icmpRequestIpv6.getSourceAddress());
    Optional<Ip6Address> linkLocalIp = getLinkLocalIp(outport);
    // Fast path if the echo request targets the link-local address of switch interface
    if (linkLocalIp.isPresent() && srcIpAddress.equals(linkLocalIp.get())) {
        sendPacketOut(outport, ethReply, destSid, destIpAddress, icmpReplyIpv6.getHopLimit());
        return;
    }
    // Get the available connect points
    Set<ConnectPoint> destConnectPoints = config.getConnectPointsForASubnetHost(destIpAddress);
    // Select a router
    Ip6Address destRouterAddress = selectRouterIp6Address(destIpAddress, outport, destConnectPoints);
    // Lookup the route store for the nexthop instead.
    if (destRouterAddress == null) {
        Optional<DeviceId> deviceId = srManager.routeService.longestPrefixLookup(destIpAddress).map(srManager::nextHopLocations).flatMap(locations -> locations.stream().findFirst()).map(ConnectPoint::deviceId);
        if (deviceId.isPresent()) {
            try {
                destRouterAddress = config.getRouterIpv6(deviceId.get());
            } catch (DeviceConfigNotFoundException e) {
                log.warn("Device config for {} not found. Abort ICMPv6 processing", deviceId);
                return;
            }
        }
    }
    destSid = config.getIPv6SegmentId(destRouterAddress);
    if (destSid < 0) {
        log.warn("Failed to lookup SID of the switch that {} attaches to. " + "Unable to process ICMPv6 request.", destIpAddress);
        return;
    }
    sendPacketOut(outport, ethReply, destSid, destIpAddress, icmpReplyIpv6.getHopLimit());
}

Example 23 with ICMP

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

the class IcmpHandler method sendIcmpResponse.

/**
 * Sends an ICMP reply message.
 *
 * @param icmpRequest the original ICMP request
 * @param outport the output port where the ICMP reply should be sent to
 */
private void sendIcmpResponse(Ethernet icmpRequest, ConnectPoint outport) {
    Ethernet icmpReplyEth = ICMP.buildIcmpReply(icmpRequest);
    IPv4 icmpRequestIpv4 = (IPv4) icmpRequest.getPayload();
    IPv4 icmpReplyIpv4 = (IPv4) icmpReplyEth.getPayload();
    Ip4Address destIpAddress = Ip4Address.valueOf(icmpRequestIpv4.getSourceAddress());
    // Get the available connect points
    Set<ConnectPoint> destConnectPoints = config.getConnectPointsForASubnetHost(destIpAddress);
    // Select a router
    Ip4Address destRouterAddress = selectRouterIp4Address(destIpAddress, outport, destConnectPoints);
    // Lookup the route store for the nexthop instead.
    if (destRouterAddress == null) {
        Optional<DeviceId> deviceId = srManager.routeService.longestPrefixLookup(destIpAddress).map(srManager::nextHopLocations).flatMap(locations -> locations.stream().findFirst()).map(ConnectPoint::deviceId);
        if (deviceId.isPresent()) {
            try {
                destRouterAddress = config.getRouterIpv4(deviceId.get());
            } catch (DeviceConfigNotFoundException e) {
                log.warn("Device config for {} not found. Abort ICMP processing", deviceId);
                return;
            }
        }
    }
    int destSid = config.getIPv4SegmentId(destRouterAddress);
    if (destSid < 0) {
        log.warn("Failed to lookup SID of the switch that {} attaches to. " + "Unable to process ICMP request.", destIpAddress);
        return;
    }
    sendPacketOut(outport, icmpReplyEth, destSid, destIpAddress, icmpReplyIpv4.getTtl());
}