| /* |
| * 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.onosproject.proxyarp; |
| |
| 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.ICMP6; |
| import org.onlab.packet.IPv6; |
| 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.PacketContext; |
| import org.onosproject.net.packet.PacketPriority; |
| import org.onosproject.net.packet.PacketProcessor; |
| import org.onosproject.net.packet.PacketService; |
| import org.onosproject.net.proxyarp.ProxyArpService; |
| import org.slf4j.Logger; |
| |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * 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.onosproject.proxyarp"); |
| packetService.addProcessor(processor, PacketProcessor.ADVISOR_MAX + 1); |
| |
| TrafficSelector.Builder selectorBuilder = |
| DefaultTrafficSelector.builder(); |
| selectorBuilder.matchEthType(Ethernet.TYPE_ARP); |
| packetService.requestPackets(selectorBuilder.build(), |
| PacketPriority.CONTROL, appId); |
| |
| // IPv6 Neighbor Solicitation packet. |
| selectorBuilder = DefaultTrafficSelector.builder(); |
| selectorBuilder.matchEthType(Ethernet.TYPE_IPV6); |
| selectorBuilder.matchIPProtocol(IPv6.PROTOCOL_ICMP6); |
| selectorBuilder.matchIcmpv6Type(ICMP6.NEIGHBOR_SOLICITATION); |
| packetService.requestPackets(selectorBuilder.build(), |
| PacketPriority.CONTROL, appId); |
| |
| // IPv6 Neighbor Advertisement packet. |
| selectorBuilder = DefaultTrafficSelector.builder(); |
| selectorBuilder.matchEthType(Ethernet.TYPE_IPV6); |
| selectorBuilder.matchIPProtocol(IPv6.PROTOCOL_ICMP6); |
| selectorBuilder.matchIcmpv6Type(ICMP6.NEIGHBOR_ADVERTISEMENT); |
| packetService.requestPackets(selectorBuilder.build(), |
| PacketPriority.CONTROL, appId); |
| |
| 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.handlePacket(context); |
| } |
| } |
| } |
| |
| |