| /* |
| * Copyright 2015 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.pim.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.onlab.packet.Ethernet; |
| import org.onlab.packet.IPv4; |
| import org.onosproject.core.ApplicationId; |
| import org.onosproject.core.CoreService; |
| import org.onosproject.incubator.net.config.basics.ConfigException; |
| import org.onosproject.incubator.net.config.basics.InterfaceConfig; |
| import org.onosproject.incubator.net.intf.Interface; |
| import org.onosproject.incubator.net.intf.InterfaceService; |
| import org.onosproject.net.ConnectPoint; |
| import org.onosproject.net.config.NetworkConfigEvent; |
| import org.onosproject.net.config.NetworkConfigListener; |
| import org.onosproject.net.config.NetworkConfigService; |
| 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.PacketProcessor; |
| import org.onosproject.net.packet.PacketService; |
| import org.slf4j.Logger; |
| |
| import java.util.Set; |
| |
| 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_UNARY) |
| protected CoreService coreService; |
| |
| // Our application ID |
| private static ApplicationId appId; |
| |
| // Register to receive PIM packets, used to send packets as well |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected PacketService packetService; |
| |
| // Use the MulticastRouteService to manage incoming PIM Join/Prune state as well as |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected MulticastRouteService ms; |
| |
| // Create an instance of the PIM packet handler |
| protected PIMPacketHandler pimPacketHandler; |
| |
| // Get the network configuration updates |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected NetworkConfigService configService; |
| |
| // Access defined network (IP) interfaces |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected InterfaceService interfaceService; |
| |
| // Internal class used to listen for network configuration changes |
| private InternalConfigListener configListener = new InternalConfigListener(); |
| |
| // Provide interfaces to the pimInterface manager as a result of Netconfig updates. |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected PIMInterfaceService pimInterfaceManager; |
| |
| /** |
| * Activate the PIM component. |
| */ |
| @Activate |
| public void activate() { |
| |
| // Get our application ID |
| 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. |
| // PIMPacketService is an inner class defined below |
| PIMPacketProcessor processor = new PIMPacketProcessor(); |
| packetService.addProcessor(processor, PacketProcessor.director(5)); |
| |
| // Register for notifications from the Network config & Interface services. |
| // We'll use these services to represent "PIMInterfaces" |
| |
| // Get a copy of the PIM Packet Handler |
| pimPacketHandler = new PIMPacketHandler(); |
| |
| // Listen for network configuration changes |
| configService.addListener(configListener); |
| |
| log.info("Started"); |
| } |
| |
| /** |
| * Deactivate the PIM component. |
| */ |
| @Deactivate |
| public void deactivate() { |
| 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 { |
| private final Logger log = getLogger(getClass()); |
| |
| @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 ethnernet packet from the parsed packet"); |
| return; |
| } |
| |
| // Get the PIM Interface the packet was received on. |
| PIMInterface pimi = pimInterfaceManager.getPIMInterface(pkt.receivedFrom()); |
| if (pimi == null) { |
| log.debug("We received PIM packet from a non PIM interface: " + pkt.receivedFrom().toString()); |
| 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 ph = new PIMPacketHandler(); |
| ph.processPacket(eth, pimi); |
| } |
| } |
| |
| /* |
| * This class receives all events from the network config services, then hands the |
| * event off to the PIMInterfaceManager for proper handling. |
| * |
| * TODO: should this move to PIMInterfaceManager? |
| */ |
| private class InternalConfigListener implements NetworkConfigListener { |
| |
| @Override |
| public void event(NetworkConfigEvent event) { |
| |
| log.debug(event.toString()); |
| switch (event.type()) { |
| case CONFIG_ADDED: |
| case CONFIG_UPDATED: |
| |
| if (event.configClass() == InterfaceConfig.class) { |
| InterfaceConfig config = configService.getConfig( |
| (ConnectPoint) event.subject(), |
| InterfaceConfig.class); |
| |
| log.debug("Got a network configuration event"); |
| |
| // Walk the interfaces and feed them to the PIMInterfaceManager |
| Set<Interface> intfs; |
| try { |
| intfs = config.getInterfaces(); |
| for (Interface intf : intfs) { |
| pimInterfaceManager.updateInterface(intf); |
| } |
| } catch (ConfigException e) { |
| log.error(e.toString()); |
| return; |
| } |
| } |
| break; |
| |
| case CONFIG_REMOVED: |
| if (event.configClass() == InterfaceConfig.class) { |
| ConnectPoint cp = (ConnectPoint) event.subject(); |
| //assertNotNull(cp); |
| pimInterfaceManager.deleteInterface(cp); |
| } |
| break; |
| |
| case CONFIG_REGISTERED: |
| case CONFIG_UNREGISTERED: |
| default: |
| log.debug("\tWe are not handling this event type"); |
| break; |
| } |
| } |
| } |
| } |