| /* |
| * Copyright 2014 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.onlab.onos.proxyarp; |
| |
| 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.onos.core.ApplicationId; |
| import org.onlab.onos.core.CoreService; |
| import org.onlab.onos.net.packet.PacketContext; |
| import org.onlab.onos.net.packet.PacketProcessor; |
| import org.onlab.onos.net.packet.PacketService; |
| import org.onlab.onos.net.proxyarp.ProxyArpService; |
| import org.slf4j.Logger; |
| |
| /** |
| * Sample reactive proxy arp application. |
| */ |
| @Component(immediate = true) |
| public class ProxyArp { |
| |
| |
| private final Logger log = getLogger(getClass()); |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected PacketService packetService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected ProxyArpService proxyArpService; |
| |
| private ProxyArpProcessor processor = new ProxyArpProcessor(); |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected CoreService coreService; |
| |
| private ApplicationId appId; |
| |
| @Activate |
| public void activate() { |
| appId = coreService.registerApplication("org.onlab.onos.proxyarp"); |
| packetService.addProcessor(processor, PacketProcessor.ADVISOR_MAX + 1); |
| log.info("Started with Application ID {}", appId.id()); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| packetService.removeProcessor(processor); |
| processor = null; |
| log.info("Stopped"); |
| } |
| |
| |
| /** |
| * Packet processor responsible for forwarding packets along their paths. |
| */ |
| private class ProxyArpProcessor 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; |
| } |
| |
| //handle the arp packet. |
| proxyArpService.handleArp(context); |
| } |
| } |
| } |
| |
| |