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

Example 76 with Ethernet

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

the class LinkDiscovery method handleLldp.

/**
 * Handles an incoming LLDP packet. Creates link in topology and adds the
 * link for staleness tracking.
 *
 * @param packetContext packet context
 * @return true if handled
 */
public boolean handleLldp(PacketContext packetContext) {
    Ethernet eth = packetContext.inPacket().parsed();
    if (eth == null) {
        return false;
    }
    if (processOnosLldp(packetContext, eth)) {
        return true;
    }
    if (processLldp(packetContext, eth)) {
        return true;
    }
    ONOSLLDP lldp = ONOSLLDP.parseLLDP(eth);
    if (lldp == null) {
        log.debug("Cannot parse the packet. It seems that it is not the lldp or bsn packet.");
    } else {
        log.debug("LLDP packet is dropped due to there are no handlers that properly handle this packet: {}", lldp.toString());
    }
    return false;
}

Example 77 with Ethernet

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

the class NetworkConfigLinksProvider method verify.

private boolean verify(PacketContext packetContext) {
    Ethernet eth = packetContext.inPacket().parsed();
    if (eth == null) {
        return false;
    }
    ONOSLLDP onoslldp = ONOSLLDP.parseONOSLLDP(eth);
    if (onoslldp != null) {
        if (!isOthercluster(eth.getSourceMAC().toString())) {
            return false;
        }
        if (!ONOSLLDP.verify(onoslldp, context.lldpSecret(), context.maxDiscoveryDelay())) {
            log.warn("LLDP Packet failed to validate!");
            return false;
        }
        return true;
    }
    return false;
}

Example 78 with Ethernet

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

the class NetworkConfigLinksProvider method extractLinkKey.

// doesn't validate. Used just to decide if this is expected link.
LinkKey extractLinkKey(PacketContext packetContext) {
    Ethernet eth = packetContext.inPacket().parsed();
    if (eth == null) {
        return null;
    }
    ONOSLLDP onoslldp = ONOSLLDP.parseONOSLLDP(eth);
    if (onoslldp != null) {
        PortNumber srcPort = portNumber(onoslldp.getPort());
        PortNumber dstPort = packetContext.inPacket().receivedFrom().port();
        DeviceId srcDeviceId = DeviceId.deviceId(onoslldp.getDeviceString());
        DeviceId dstDeviceId = packetContext.inPacket().receivedFrom().deviceId();
        ConnectPoint src = new ConnectPoint(srcDeviceId, srcPort);
        ConnectPoint dst = new ConnectPoint(dstDeviceId, dstPort);
        return LinkKey.linkKey(src, dst);
    }
    return null;
}

Example 79 with Ethernet

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

the class HostLocationProvider method sendProbe.

private void sendProbe(Host host, IpAddress targetIp) {
    Ethernet probePacket = null;
    if (targetIp.isIp4()) {
        // IPv4: Use ARP
        probePacket = buildArpRequest(targetIp, host);
    } else {
        // IPv6: Use Neighbor Discovery
        // TODO need to implement ndp probe
        log.info("Triggering probe on device {} ", host);
        return;
    }
    TrafficTreatment treatment = DefaultTrafficTreatment.builder().setOutput(host.location().port()).build();
    OutboundPacket outboundPacket = new DefaultOutboundPacket(host.location().deviceId(), treatment, ByteBuffer.wrap(probePacket.serialize()));
    packetService.emit(outboundPacket);
}

Example 80 with Ethernet

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

the class BasicInterpreterImpl method mapInboundPacket.

@Override
public InboundPacket mapInboundPacket(PiPacketOperation packetIn, DeviceId deviceId) throws PiInterpreterException {
    // Assuming that the packet is ethernet, which is fine since basic.p4
    // can deparse only ethernet packets.
    Ethernet ethPkt;
    try {
        ethPkt = Ethernet.deserializer().deserialize(packetIn.data().asArray(), 0, packetIn.data().size());
    } catch (DeserializationException dex) {
        throw new PiInterpreterException(dex.getMessage());
    }
    // Returns the ingress port packet metadata.
    Optional<PiPacketMetadata> packetMetadata = packetIn.metadatas().stream().filter(m -> m.id().equals(INGRESS_PORT)).findFirst();
    if (packetMetadata.isPresent()) {
        ImmutableByteSequence portByteSequence = packetMetadata.get().value();
        short s = portByteSequence.asReadOnlyBuffer().getShort();
        ConnectPoint receivedFrom = new ConnectPoint(deviceId, PortNumber.portNumber(s));
        ByteBuffer rawData = ByteBuffer.wrap(packetIn.data().asArray());
        return new DefaultInboundPacket(receivedFrom, ethPkt, rawData);
    } else {
        throw new PiInterpreterException(format("Missing metadata '%s' in packet-in received from '%s': %s", INGRESS_PORT, deviceId, packetIn));
    }
}