| /* |
| * Copyright 2016-present Open Networking Foundation |
| * |
| * 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.pim.impl; |
| |
| import org.osgi.service.component.annotations.Activate; |
| import org.osgi.service.component.annotations.Component; |
| import org.osgi.service.component.annotations.Deactivate; |
| import org.osgi.service.component.annotations.Reference; |
| import org.osgi.service.component.annotations.ReferenceCardinality; |
| import org.onlab.packet.Ethernet; |
| import org.onlab.packet.IPv4; |
| import org.onosproject.core.ApplicationId; |
| import org.onosproject.core.CoreService; |
| import org.onosproject.net.flow.DefaultTrafficSelector; |
| import org.onosproject.net.flow.TrafficSelector; |
| import org.onosproject.net.mcast.MulticastRouteService; |
| import org.onosproject.net.packet.InboundPacket; |
| import org.onosproject.net.packet.PacketContext; |
| import org.onosproject.net.packet.PacketPriority; |
| import org.onosproject.net.packet.PacketProcessor; |
| import org.onosproject.net.packet.PacketService; |
| import org.slf4j.Logger; |
| |
| import java.util.Optional; |
| |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * The main PIM controller class. |
| */ |
| @Component(immediate = true) |
| public class PimApplication { |
| private final Logger log = getLogger(getClass()); |
| |
| // Used to get the appId |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected CoreService coreService; |
| |
| // Register to receive PIM packets, used to send packets as well |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected PacketService packetService; |
| |
| // Use the MulticastRouteService to manage incoming PIM Join/Prune state as well as |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected MulticastRouteService ms; |
| |
| // Create an instance of the PIM packet handler |
| protected PimPacketHandler pimPacketHandler; |
| |
| // Provide interfaces to the pimInterface manager as a result of Netconfig updates. |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected PimInterfaceService pimInterfaceManager; |
| |
| private final PimPacketProcessor processor = new PimPacketProcessor(); |
| |
| /** |
| * Activate the PIM component. |
| */ |
| @Activate |
| public void activate() { |
| // Get our application ID |
| ApplicationId appId = coreService.registerApplication("org.onosproject.pim"); |
| |
| // Build the traffic selector for PIM packets |
| TrafficSelector.Builder selector = DefaultTrafficSelector.builder(); |
| selector.matchEthType(Ethernet.TYPE_IPV4); |
| selector.matchIPProtocol(IPv4.PROTOCOL_PIM); |
| |
| // Use the traffic selector to tell the packet service which packets we want. |
| packetService.addProcessor(processor, PacketProcessor.director(5)); |
| |
| packetService.requestPackets(selector.build(), PacketPriority.CONTROL, |
| appId, Optional.empty()); |
| |
| // Get a copy of the PIM Packet Handler |
| pimPacketHandler = new PimPacketHandler(); |
| |
| log.info("Started"); |
| } |
| |
| /** |
| * Deactivate the PIM component. |
| */ |
| @Deactivate |
| public void deactivate() { |
| packetService.removeProcessor(processor); |
| |
| log.info("Stopped"); |
| } |
| |
| /** |
| * The class that will receive PIM packets, sanitize them, determine the PIMInterface |
| * they arrived on, then forward them on to be processed by the appropriate entity. |
| */ |
| public class PimPacketProcessor implements PacketProcessor { |
| |
| @Override |
| public void process(PacketContext context) { |
| |
| // return if this packet has already been handled |
| if (context.isHandled()) { |
| return; |
| } |
| |
| // get the inbound packet |
| InboundPacket pkt = context.inPacket(); |
| if (pkt == null) { |
| // problem getting the inbound pkt. Log it debug to avoid spamming log file |
| log.debug("Could not retrieve packet from context"); |
| return; |
| } |
| |
| // Get the ethernet header |
| Ethernet eth = pkt.parsed(); |
| if (eth == null) { |
| // problem getting the ethernet pkt. Log it debug to avoid spamming log file |
| log.debug("Could not retrieve ethernet packet from the parsed packet"); |
| return; |
| } |
| |
| // Get the PIM Interface the packet was received on. |
| PimInterface pimi = pimInterfaceManager.getPimInterface(pkt.receivedFrom()); |
| if (pimi == null) { |
| return; |
| } |
| |
| /* |
| * Pass the packet processing off to the PIMInterface for processing. |
| * |
| * TODO: Is it possible that PIM interface processing should move to the |
| * PIMInterfaceManager directly? |
| */ |
| pimPacketHandler.processPacket(eth, pimi); |
| } |
| } |
| |
| } |