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

Example 1 with ICMP

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

the class IcmpHandler method sendIcmpResponse.

private void sendIcmpResponse(Ethernet icmpRequest, ConnectPoint outport) {
    Ethernet icmpReplyEth = new Ethernet();
    IPv4 icmpRequestIpv4 = (IPv4) icmpRequest.getPayload();
    IPv4 icmpReplyIpv4 = new IPv4();
    int destAddress = icmpRequestIpv4.getDestinationAddress();
    icmpReplyIpv4.setDestinationAddress(icmpRequestIpv4.getSourceAddress());
    icmpReplyIpv4.setSourceAddress(destAddress);
    icmpReplyIpv4.setTtl((byte) 64);
    icmpReplyIpv4.setChecksum((short) 0);
    ICMP icmpReply = new ICMP();
    icmpReply.setPayload(((ICMP) icmpRequestIpv4.getPayload()).getPayload());
    icmpReply.setIcmpType(ICMP.TYPE_ECHO_REPLY);
    icmpReply.setIcmpCode(ICMP.CODE_ECHO_REPLY);
    icmpReply.setChecksum((short) 0);
    icmpReplyIpv4.setPayload(icmpReply);
    icmpReplyEth.setPayload(icmpReplyIpv4);
    icmpReplyEth.setEtherType(Ethernet.TYPE_IPV4);
    icmpReplyEth.setDestinationMACAddress(icmpRequest.getSourceMACAddress());
    icmpReplyEth.setSourceMACAddress(icmpRequest.getDestinationMACAddress());
    icmpReplyEth.setVlanID(icmpRequest.getVlanID());
    sendPacketOut(outport, icmpReplyEth);
}

Example 2 with ICMP

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

the class IcmpHandler method processPacketIn.

private void processPacketIn(InboundPacket pkt) {
    boolean ipMatches = false;
    Ethernet ethernet = pkt.parsed();
    IPv4 ipv4 = (IPv4) ethernet.getPayload();
    ConnectPoint connectPoint = pkt.receivedFrom();
    IpAddress destIpAddress = IpAddress.valueOf(ipv4.getDestinationAddress());
    Interface targetInterface = interfaceService.getMatchingInterface(destIpAddress);
    if (targetInterface == null) {
        log.trace("No matching interface for {}", destIpAddress);
        return;
    }
    for (InterfaceIpAddress interfaceIpAddress : targetInterface.ipAddressesList()) {
        if (interfaceIpAddress.ipAddress().equals(destIpAddress)) {
            ipMatches = true;
            break;
        }
    }
    if (((ICMP) ipv4.getPayload()).getIcmpType() == ICMP.TYPE_ECHO_REQUEST && ipMatches) {
        sendIcmpResponse(ethernet, connectPoint);
    }
}

Example 3 with ICMP

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

the class ReactiveForwarding method installRule.

// Install a rule forwarding the packet to the specified port.
private void installRule(PacketContext context, PortNumber portNumber, ReactiveForwardMetrics macMetrics) {
    // 
    // We don't support (yet) buffer IDs in the Flow Service so
    // packet out first.
    // 
    Ethernet inPkt = context.inPacket().parsed();
    TrafficSelector.Builder selectorBuilder = DefaultTrafficSelector.builder();
    // If PacketOutOnly or ARP packet than forward directly to output port
    if (packetOutOnly || inPkt.getEtherType() == Ethernet.TYPE_ARP) {
        packetOut(context, portNumber, macMetrics);
        return;
    }
    // 
    if (matchDstMacOnly) {
        selectorBuilder.matchEthDst(inPkt.getDestinationMAC());
    } else {
        selectorBuilder.matchInPort(context.inPacket().receivedFrom().port()).matchEthSrc(inPkt.getSourceMAC()).matchEthDst(inPkt.getDestinationMAC());
        // If configured Match Vlan ID
        if (matchVlanId && inPkt.getVlanID() != Ethernet.VLAN_UNTAGGED) {
            selectorBuilder.matchVlanId(VlanId.vlanId(inPkt.getVlanID()));
        }
        // 
        if (matchIpv4Address && inPkt.getEtherType() == Ethernet.TYPE_IPV4) {
            IPv4 ipv4Packet = (IPv4) inPkt.getPayload();
            byte ipv4Protocol = ipv4Packet.getProtocol();
            Ip4Prefix matchIp4SrcPrefix = Ip4Prefix.valueOf(ipv4Packet.getSourceAddress(), Ip4Prefix.MAX_MASK_LENGTH);
            Ip4Prefix matchIp4DstPrefix = Ip4Prefix.valueOf(ipv4Packet.getDestinationAddress(), Ip4Prefix.MAX_MASK_LENGTH);
            selectorBuilder.matchEthType(Ethernet.TYPE_IPV4).matchIPSrc(matchIp4SrcPrefix).matchIPDst(matchIp4DstPrefix);
            if (matchIpv4Dscp) {
                byte dscp = ipv4Packet.getDscp();
                byte ecn = ipv4Packet.getEcn();
                selectorBuilder.matchIPDscp(dscp).matchIPEcn(ecn);
            }
            if (matchTcpUdpPorts && ipv4Protocol == IPv4.PROTOCOL_TCP) {
                TCP tcpPacket = (TCP) ipv4Packet.getPayload();
                selectorBuilder.matchIPProtocol(ipv4Protocol).matchTcpSrc(TpPort.tpPort(tcpPacket.getSourcePort())).matchTcpDst(TpPort.tpPort(tcpPacket.getDestinationPort()));
            }
            if (matchTcpUdpPorts && ipv4Protocol == IPv4.PROTOCOL_UDP) {
                UDP udpPacket = (UDP) ipv4Packet.getPayload();
                selectorBuilder.matchIPProtocol(ipv4Protocol).matchUdpSrc(TpPort.tpPort(udpPacket.getSourcePort())).matchUdpDst(TpPort.tpPort(udpPacket.getDestinationPort()));
            }
            if (matchIcmpFields && ipv4Protocol == IPv4.PROTOCOL_ICMP) {
                ICMP icmpPacket = (ICMP) ipv4Packet.getPayload();
                selectorBuilder.matchIPProtocol(ipv4Protocol).matchIcmpType(icmpPacket.getIcmpType()).matchIcmpCode(icmpPacket.getIcmpCode());
            }
        }
        // 
        if (matchIpv6Address && inPkt.getEtherType() == Ethernet.TYPE_IPV6) {
            IPv6 ipv6Packet = (IPv6) inPkt.getPayload();
            byte ipv6NextHeader = ipv6Packet.getNextHeader();
            Ip6Prefix matchIp6SrcPrefix = Ip6Prefix.valueOf(ipv6Packet.getSourceAddress(), Ip6Prefix.MAX_MASK_LENGTH);
            Ip6Prefix matchIp6DstPrefix = Ip6Prefix.valueOf(ipv6Packet.getDestinationAddress(), Ip6Prefix.MAX_MASK_LENGTH);
            selectorBuilder.matchEthType(Ethernet.TYPE_IPV6).matchIPv6Src(matchIp6SrcPrefix).matchIPv6Dst(matchIp6DstPrefix);
            if (matchIpv6FlowLabel) {
                selectorBuilder.matchIPv6FlowLabel(ipv6Packet.getFlowLabel());
            }
            if (matchTcpUdpPorts && ipv6NextHeader == IPv6.PROTOCOL_TCP) {
                TCP tcpPacket = (TCP) ipv6Packet.getPayload();
                selectorBuilder.matchIPProtocol(ipv6NextHeader).matchTcpSrc(TpPort.tpPort(tcpPacket.getSourcePort())).matchTcpDst(TpPort.tpPort(tcpPacket.getDestinationPort()));
            }
            if (matchTcpUdpPorts && ipv6NextHeader == IPv6.PROTOCOL_UDP) {
                UDP udpPacket = (UDP) ipv6Packet.getPayload();
                selectorBuilder.matchIPProtocol(ipv6NextHeader).matchUdpSrc(TpPort.tpPort(udpPacket.getSourcePort())).matchUdpDst(TpPort.tpPort(udpPacket.getDestinationPort()));
            }
            if (matchIcmpFields && ipv6NextHeader == IPv6.PROTOCOL_ICMP6) {
                ICMP6 icmp6Packet = (ICMP6) ipv6Packet.getPayload();
                selectorBuilder.matchIPProtocol(ipv6NextHeader).matchIcmpv6Type(icmp6Packet.getIcmpType()).matchIcmpv6Code(icmp6Packet.getIcmpCode());
            }
        }
    }
    TrafficTreatment treatment;
    if (inheritFlowTreatment) {
        treatment = context.treatmentBuilder().setOutput(portNumber).build();
    } else {
        treatment = DefaultTrafficTreatment.builder().setOutput(portNumber).build();
    }
    ForwardingObjective forwardingObjective = DefaultForwardingObjective.builder().withSelector(selectorBuilder.build()).withTreatment(treatment).withPriority(flowPriority).withFlag(ForwardingObjective.Flag.VERSATILE).fromApp(appId).makeTemporary(flowTimeout).add();
    flowObjectiveService.forward(context.inPacket().receivedFrom().deviceId(), forwardingObjective);
    forwardPacket(macMetrics);
    // 
    if (packetOutOfppTable) {
        packetOut(context, PortNumber.TABLE, macMetrics);
    } else {
        packetOut(context, portNumber, macMetrics);
    }
}

Example 4 with ICMP

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

the class OpenstackRoutingHandler method setGatewayRules.

private void setGatewayRules(Subnet osSubnet, Router osRouter, boolean install) {
    OpenstackNode srcNatGw = osNodeService.completeNodes(GATEWAY).stream().findFirst().orElse(null);
    if (srcNatGw == null) {
        return;
    }
    if (Strings.isNullOrEmpty(osSubnet.getGateway())) {
        // do nothing if no gateway is set
        return;
    }
    Network net = osNetworkAdminService.network(osSubnet.getNetworkId());
    Type netType = osNetworkAdminService.networkType(osSubnet.getNetworkId());
    Set<Subnet> routableSubnets = routableSubnets(osRouter, osSubnet.getId());
    // install rules to each compute node for routing IP packets to gateways
    osNodeService.completeNodes(COMPUTE).stream().filter(cNode -> cNode.dataIp() != null).forEach(cNode -> setRulesToGatewayWithRoutableSubnets(cNode, srcNatGw, net.getProviderSegID(), osSubnet, routableSubnets, netType, install));
    // install rules to punt ICMP packets to controller at gateway node
    // this rule is only valid for stateless ICMP SNAT case
    osNodeService.completeNodes(GATEWAY).forEach(gNode -> setReactiveGatewayIcmpRule(IpAddress.valueOf(osSubnet.getGateway()), gNode.intgBridge(), install));
    final String updateStr = install ? MSG_ENABLED : MSG_DISABLED;
    log.debug(updateStr + "IP to {}", osSubnet.getGateway());
}

Example 5 with ICMP

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

the class OpenstackRoutingSnatIcmpHandlerTest method validateIcmpReqToGw.

private void validateIcmpReqToGw(IPv4 ipPacket) {
    ICMP icmpReq = (ICMP) ipPacket.getPayload();
    ICMPEcho icmpEchoReq = (ICMPEcho) icmpReq.getPayload();
    short icmpId = icmpEchoReq.getIdentifier();
    short seqNum = icmpEchoReq.getSequenceNum();
    assertEquals(icmpReq.getIcmpType(), TYPE_ECHO_REPLY);
    assertEquals(icmpReq.getIcmpCode(), CODE_ECHO_REPLY);
    assertEquals(icmpId, 0);
    assertEquals(seqNum, 0);
    assertEquals(IPv4.fromIPv4Address(ipPacket.getSourceAddress()), targetIpToGw.toString());
    assertEquals(IPv4.fromIPv4Address(ipPacket.getDestinationAddress()), srcIpPort1.toString());
}