diff options
Diffstat (limited to 'framework/src/onos/apps/pim/src/main/java/org/onosproject/pim/impl/PIMComponent.java')
-rw-r--r-- | framework/src/onos/apps/pim/src/main/java/org/onosproject/pim/impl/PIMComponent.java | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/framework/src/onos/apps/pim/src/main/java/org/onosproject/pim/impl/PIMComponent.java b/framework/src/onos/apps/pim/src/main/java/org/onosproject/pim/impl/PIMComponent.java new file mode 100644 index 00000000..bd5e1486 --- /dev/null +++ b/framework/src/onos/apps/pim/src/main/java/org/onosproject/pim/impl/PIMComponent.java @@ -0,0 +1,153 @@ +/* + * 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 static org.slf4j.LoggerFactory.getLogger; + +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.onlab.packet.Ip4Address; +import org.onlab.packet.IpAddress; +import org.onlab.packet.IpPrefix; +import org.onlab.packet.PIM; +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.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; + +/** + * Protocol Independent Multicast Emulation. + */ +@Component(immediate = true) +public class PIMComponent { + private final Logger log = getLogger(getClass()); + + @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) + protected PacketService packetService; + + @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) + protected CoreService coreService; + + private PIMPacketProcessor processor = new PIMPacketProcessor(); + private static ApplicationId appId; + + @Activate + public void activate() { + appId = coreService.registerApplication("org.onosproject.pim"); + + packetService.addProcessor(processor, PacketProcessor.director(1)); + + // Build a traffic selector for all multicast traffic + TrafficSelector.Builder selector = DefaultTrafficSelector.builder(); + selector.matchEthType(Ethernet.TYPE_IPV4); + selector.matchIPProtocol(IPv4.PROTOCOL_PIM); + packetService.requestPackets(selector.build(), PacketPriority.REACTIVE, appId); + + log.info("Started"); + } + + @Deactivate + public void deactivate() { + packetService.removeProcessor(processor); + processor = null; + log.info("Stopped"); + } + + /** + * Packet processor responsible for handling IGMP packets. + */ + private class PIMPacketProcessor implements PacketProcessor { + + @Override + public void process(PacketContext context) { + // Stop processing if the packet has been handled, since we + // can't do any more to it. + if (context.isHandled()) { + return; + } + + InboundPacket pkt = context.inPacket(); + if (pkt == null) { + return; + } + + Ethernet ethPkt = pkt.parsed(); + if (ethPkt == null) { + return; + } + + /* + * IPv6 MLD packets are handled by ICMP6. We'll only deal + * with IPv4. + */ + if (ethPkt.getEtherType() != Ethernet.TYPE_IPV4) { + return; + } + + IPv4 ip = (IPv4) ethPkt.getPayload(); + IpAddress gaddr = IpAddress.valueOf(ip.getDestinationAddress()); + IpAddress saddr = Ip4Address.valueOf(ip.getSourceAddress()); + log.debug("Packet (" + saddr.toString() + ", " + gaddr.toString() + + "\tingress port: " + context.inPacket().receivedFrom().toString()); + + if (ip.getProtocol() != IPv4.PROTOCOL_PIM) { + log.debug("PIM Picked up a non PIM packet: IP protocol: " + ip.getProtocol()); + return; + } + + // TODO: check incoming to be PIM.PIM_ADDRESS or "Our" address. + IpPrefix spfx = IpPrefix.valueOf(saddr, 32); + IpPrefix gpfx = IpPrefix.valueOf(gaddr, 32); + + PIM pim = (PIM) ip.getPayload(); + switch (pim.getPimMsgType()) { + + case PIM.TYPE_HELLO: + PIMNeighbors.processHello(ethPkt, context.inPacket().receivedFrom()); + break; + + case PIM.TYPE_JOIN_PRUNE_REQUEST: + // Create the function + break; + + case PIM.TYPE_ASSERT: + case PIM.TYPE_BOOTSTRAP: + case PIM.TYPE_CANDIDATE_RP_ADV: + case PIM.TYPE_GRAFT: + case PIM.TYPE_GRAFT_ACK: + case PIM.TYPE_REGISTER: + case PIM.TYPE_REGISTER_STOP: + log.debug("Unsupported PIM message type: " + pim.getPimMsgType()); + break; + + default: + log.debug("Unkown PIM message type: " + pim.getPimMsgType()); + break; + } + } + } +} |