| /* |
| * Copyright 2014-present Open Networking Laboratory |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.onosproject.provider.of.packet.impl; |
| |
| import org.apache.felix.scr.annotations.Activate; |
| import org.apache.felix.scr.annotations.Component; |
| import org.apache.felix.scr.annotations.Deactivate; |
| import org.apache.felix.scr.annotations.Reference; |
| import org.apache.felix.scr.annotations.ReferenceCardinality; |
| import org.onosproject.net.ConnectPoint; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.PortNumber; |
| import org.onosproject.net.flow.instructions.Instruction; |
| import org.onosproject.net.flow.instructions.Instructions.OutputInstruction; |
| import org.onosproject.net.packet.DefaultInboundPacket; |
| import org.onosproject.net.packet.DefaultOutboundPacket; |
| import org.onosproject.net.packet.OutboundPacket; |
| import org.onosproject.net.packet.PacketProvider; |
| import org.onosproject.net.packet.PacketProviderRegistry; |
| import org.onosproject.net.packet.PacketProviderService; |
| import org.onosproject.net.provider.AbstractProvider; |
| import org.onosproject.net.provider.ProviderId; |
| import org.onosproject.openflow.controller.Dpid; |
| import org.onosproject.openflow.controller.OpenFlowController; |
| import org.onosproject.openflow.controller.OpenFlowPacketContext; |
| import org.onosproject.openflow.controller.OpenFlowSwitch; |
| import org.onosproject.openflow.controller.PacketListener; |
| import org.projectfloodlight.openflow.protocol.OFPacketOut; |
| import org.projectfloodlight.openflow.protocol.OFPortDesc; |
| import org.projectfloodlight.openflow.protocol.action.OFAction; |
| import org.projectfloodlight.openflow.protocol.ver10.OFFactoryVer10; |
| import org.projectfloodlight.openflow.types.OFBufferId; |
| import org.projectfloodlight.openflow.types.OFPort; |
| import org.slf4j.Logger; |
| |
| import java.nio.ByteBuffer; |
| import java.util.Collections; |
| |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| |
| /** |
| * Provider which uses an OpenFlow controller to detect network |
| * infrastructure links. |
| */ |
| @Component(immediate = true) |
| public class OpenFlowPacketProvider extends AbstractProvider implements PacketProvider { |
| |
| private final Logger log = getLogger(getClass()); |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected PacketProviderRegistry providerRegistry; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected OpenFlowController controller; |
| |
| private PacketProviderService providerService; |
| |
| private final InternalPacketProvider listener = new InternalPacketProvider(); |
| |
| /** |
| * Creates an OpenFlow link provider. |
| */ |
| public OpenFlowPacketProvider() { |
| super(new ProviderId("of", "org.onosproject.provider.openflow")); |
| } |
| |
| @Activate |
| public void activate() { |
| providerService = providerRegistry.register(this); |
| controller.addPacketListener(20, listener); |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| providerRegistry.unregister(this); |
| controller.removePacketListener(listener); |
| providerService = null; |
| log.info("Stopped"); |
| } |
| |
| @Override |
| public void emit(OutboundPacket packet) { |
| DeviceId devId = packet.sendThrough(); |
| String scheme = devId.toString().split(":")[0]; |
| |
| if (!scheme.equals(this.id().scheme())) { |
| throw new IllegalArgumentException( |
| "Don't know how to handle Device with scheme " + scheme); |
| } |
| |
| Dpid dpid = Dpid.dpid(devId.uri()); |
| OpenFlowSwitch sw = controller.getSwitch(dpid); |
| if (sw == null) { |
| log.warn("Device {} isn't available?", devId); |
| return; |
| } |
| |
| //Ethernet eth = new Ethernet(); |
| //eth.deserialize(packet.data().array(), 0, packet.data().array().length); |
| OFPortDesc p = null; |
| for (Instruction inst : packet.treatment().allInstructions()) { |
| if (inst.type().equals(Instruction.Type.OUTPUT)) { |
| p = portDesc(((OutputInstruction) inst).port()); |
| OFPacketOut po = packetOut(sw, packet.data().array(), p.getPortNo()); |
| sw.sendMsg(po); |
| } |
| } |
| |
| } |
| |
| private OFPortDesc portDesc(PortNumber port) { |
| OFPortDesc.Builder builder = OFFactoryVer10.INSTANCE.buildPortDesc(); |
| builder.setPortNo(OFPort.of((int) port.toLong())); |
| |
| return builder.build(); |
| } |
| |
| private OFPacketOut packetOut(OpenFlowSwitch sw, byte[] eth, OFPort out) { |
| OFPacketOut.Builder builder = sw.factory().buildPacketOut(); |
| OFAction act = sw.factory().actions() |
| .buildOutput() |
| .setPort(out) |
| .build(); |
| return builder |
| .setBufferId(OFBufferId.NO_BUFFER) |
| .setInPort(OFPort.CONTROLLER) |
| .setActions(Collections.singletonList(act)) |
| .setData(eth) |
| .build(); |
| } |
| |
| /** |
| * Internal Packet Provider implementation. |
| * |
| */ |
| private class InternalPacketProvider implements PacketListener { |
| |
| @Override |
| public void handlePacket(OpenFlowPacketContext pktCtx) { |
| DeviceId id = DeviceId.deviceId(Dpid.uri(pktCtx.dpid().value())); |
| |
| DefaultInboundPacket inPkt = new DefaultInboundPacket( |
| new ConnectPoint(id, PortNumber.portNumber(pktCtx.inPort())), |
| pktCtx.parsed(), ByteBuffer.wrap(pktCtx.unparsed()), |
| pktCtx.cookie()); |
| |
| DefaultOutboundPacket outPkt = null; |
| if (!pktCtx.isBuffered()) { |
| outPkt = new DefaultOutboundPacket(id, null, |
| ByteBuffer.wrap(pktCtx.unparsed())); |
| } |
| |
| OpenFlowCorePacketContext corePktCtx = |
| new OpenFlowCorePacketContext(System.currentTimeMillis(), |
| inPkt, outPkt, pktCtx.isHandled(), pktCtx); |
| providerService.processPacket(corePktCtx); |
| } |
| |
| } |
| |
| |
| } |