sangho | 0c2a3da | 2016-02-16 13:39:07 +0900 | [diff] [blame] | 1 | /* |
Brian O'Connor | 5ab426f | 2016-04-09 01:19:45 -0700 | [diff] [blame] | 2 | * Copyright 2016-present Open Networking Laboratory |
sangho | 0c2a3da | 2016-02-16 13:39:07 +0900 | [diff] [blame] | 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
sangho | 0c2a3da | 2016-02-16 13:39:07 +0900 | [diff] [blame] | 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.onosproject.openstacknetworking.routing; |
| 17 | |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 18 | import com.google.common.collect.Maps; |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 19 | import org.apache.felix.scr.annotations.Activate; |
| 20 | import org.apache.felix.scr.annotations.Component; |
| 21 | import org.apache.felix.scr.annotations.Deactivate; |
| 22 | import org.apache.felix.scr.annotations.Reference; |
| 23 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 24 | import org.onlab.packet.Ethernet; |
| 25 | import org.onlab.packet.ICMP; |
| 26 | import org.onlab.packet.IPv4; |
| 27 | import org.onlab.packet.Ip4Address; |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 28 | import org.onosproject.core.ApplicationId; |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 29 | import org.onosproject.core.CoreService; |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 30 | import org.onosproject.net.DeviceId; |
sangho | 6032f34 | 2016-07-07 14:32:03 +0900 | [diff] [blame] | 31 | import org.onosproject.net.Host; |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 32 | import org.onosproject.net.flow.DefaultTrafficSelector; |
| 33 | import org.onosproject.net.flow.DefaultTrafficTreatment; |
| 34 | import org.onosproject.net.flow.TrafficSelector; |
| 35 | import org.onosproject.net.flow.TrafficTreatment; |
sangho | 6032f34 | 2016-07-07 14:32:03 +0900 | [diff] [blame] | 36 | import org.onosproject.net.host.HostService; |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 37 | import org.onosproject.net.packet.DefaultOutboundPacket; |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 38 | import org.onosproject.net.packet.InboundPacket; |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 39 | import org.onosproject.net.packet.OutboundPacket; |
sangho | 0c2a3da | 2016-02-16 13:39:07 +0900 | [diff] [blame] | 40 | import org.onosproject.net.packet.PacketContext; |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 41 | import org.onosproject.net.packet.PacketPriority; |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 42 | import org.onosproject.net.packet.PacketProcessor; |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 43 | import org.onosproject.net.packet.PacketService; |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 44 | import org.onosproject.openstackinterface.OpenstackRouter; |
sangho | 6032f34 | 2016-07-07 14:32:03 +0900 | [diff] [blame] | 45 | import org.onosproject.openstacknetworking.Constants; |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 46 | import org.onosproject.openstackinterface.OpenstackInterfaceService; |
| 47 | import org.onosproject.openstackinterface.OpenstackPort; |
sangho | 6032f34 | 2016-07-07 14:32:03 +0900 | [diff] [blame] | 48 | import org.onosproject.openstacknode.OpenstackNode; |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 49 | import org.onosproject.openstacknode.OpenstackNodeEvent; |
| 50 | import org.onosproject.openstacknode.OpenstackNodeListener; |
sangho | 6032f34 | 2016-07-07 14:32:03 +0900 | [diff] [blame] | 51 | import org.onosproject.openstacknode.OpenstackNodeService; |
Hyunsun Moon | 5aa480b | 2016-08-03 12:23:14 -0700 | [diff] [blame] | 52 | import org.onosproject.scalablegateway.api.GatewayNode; |
Kyuhwi Choi | 92d9ea4 | 2016-06-13 17:28:00 +0900 | [diff] [blame] | 53 | import org.onosproject.scalablegateway.api.ScalableGatewayService; |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 54 | import org.slf4j.Logger; |
| 55 | |
| 56 | import java.nio.ByteBuffer; |
| 57 | import java.util.Map; |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 58 | import java.util.Objects; |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 59 | import java.util.Optional; |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 60 | import java.util.concurrent.ExecutorService; |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 61 | |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 62 | import static java.util.concurrent.Executors.newSingleThreadScheduledExecutor; |
| 63 | import static org.onlab.util.Tools.groupedThreads; |
| 64 | import static org.onosproject.openstacknetworking.Constants.*; |
| 65 | import static org.onosproject.openstacknode.OpenstackNodeService.NodeType.GATEWAY; |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 66 | import static org.slf4j.LoggerFactory.getLogger; |
| 67 | |
sangho | 0c2a3da | 2016-02-16 13:39:07 +0900 | [diff] [blame] | 68 | |
| 69 | /** |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 70 | * Handle ICMP packet sent from OpenStack Gateway nodes. |
| 71 | * For a request to any private network gateway IPs, it generates fake reply. |
| 72 | * For a request to the external network, it does source NAT with a public IP and |
| 73 | * forward the request to the external only if the request instance has external |
| 74 | * connection setups. |
sangho | 0c2a3da | 2016-02-16 13:39:07 +0900 | [diff] [blame] | 75 | */ |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 76 | @Component(immediate = true) |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 77 | public class OpenstackIcmpHandler { |
| 78 | protected final Logger log = getLogger(getClass()); |
sangho | 0c2a3da | 2016-02-16 13:39:07 +0900 | [diff] [blame] | 79 | |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 80 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 81 | protected CoreService coreService; |
sangho | 6032f34 | 2016-07-07 14:32:03 +0900 | [diff] [blame] | 82 | |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 83 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 84 | protected PacketService packetService; |
sangho | 6032f34 | 2016-07-07 14:32:03 +0900 | [diff] [blame] | 85 | |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 86 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 87 | protected HostService hostService; |
| 88 | |
| 89 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 90 | protected OpenstackInterfaceService openstackService; |
| 91 | |
| 92 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 93 | protected ScalableGatewayService gatewayService; |
| 94 | |
| 95 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 96 | protected OpenstackNodeService nodeService; |
| 97 | |
| 98 | private final ExecutorService eventExecutor = newSingleThreadScheduledExecutor( |
| 99 | groupedThreads(this.getClass().getSimpleName(), "event-handler", log)); |
| 100 | private final InternalPacketProcessor packetProcessor = new InternalPacketProcessor(); |
| 101 | private final InternalNodeListener nodeListener = new InternalNodeListener(); |
sangho | 6032f34 | 2016-07-07 14:32:03 +0900 | [diff] [blame] | 102 | private final Map<String, Host> icmpInfoMap = Maps.newHashMap(); |
sangho | 6032f34 | 2016-07-07 14:32:03 +0900 | [diff] [blame] | 103 | |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 104 | ApplicationId appId; |
| 105 | |
| 106 | @Activate |
| 107 | protected void activate() { |
| 108 | appId = coreService.registerApplication(ROUTING_APP_ID); |
| 109 | packetService.addProcessor(packetProcessor, PacketProcessor.director(1)); |
| 110 | nodeService.addListener(nodeListener); |
| 111 | requestPacket(appId); |
| 112 | |
| 113 | log.info("Started"); |
sangho | 0c2a3da | 2016-02-16 13:39:07 +0900 | [diff] [blame] | 114 | } |
| 115 | |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 116 | @Deactivate |
| 117 | protected void deactivate() { |
| 118 | packetService.removeProcessor(packetProcessor); |
| 119 | log.info("Stopped"); |
| 120 | } |
| 121 | |
| 122 | private void requestPacket(ApplicationId appId) { |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 123 | TrafficSelector icmpSelector = DefaultTrafficSelector.builder() |
| 124 | .matchEthType(Ethernet.TYPE_IPV4) |
| 125 | .matchIPProtocol(IPv4.PROTOCOL_ICMP) |
| 126 | .build(); |
| 127 | |
Sho SHIMIZU | 8ebb04a | 2016-10-06 15:58:29 -0700 | [diff] [blame] | 128 | gatewayService.getGatewayDeviceIds().forEach(gateway -> { |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 129 | packetService.requestPackets(icmpSelector, |
| 130 | PacketPriority.CONTROL, |
| 131 | appId, |
| 132 | Optional.of(gateway)); |
| 133 | log.debug("Requested ICMP packet on {}", gateway); |
| 134 | }); |
sangho | 0c2a3da | 2016-02-16 13:39:07 +0900 | [diff] [blame] | 135 | } |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 136 | |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 137 | private void processIcmpPacket(PacketContext context, Ethernet ethernet) { |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 138 | IPv4 ipPacket = (IPv4) ethernet.getPayload(); |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 139 | log.trace("Processing ICMP packet from ip {}, mac {}", |
| 140 | Ip4Address.valueOf(ipPacket.getSourceAddress()), |
| 141 | ethernet.getSourceMAC()); |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 142 | |
| 143 | ICMP icmp = (ICMP) ipPacket.getPayload(); |
| 144 | short icmpId = getIcmpId(icmp); |
| 145 | |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 146 | DeviceId srcDevice = context.inPacket().receivedFrom().deviceId(); |
| 147 | switch (icmp.getIcmpType()) { |
| 148 | case ICMP.TYPE_ECHO_REQUEST: |
| 149 | Optional<Host> reqHost = hostService.getHostsByMac(ethernet.getSourceMAC()) |
| 150 | .stream().findFirst(); |
| 151 | if (!reqHost.isPresent()) { |
| 152 | log.warn("No host found for MAC {}", ethernet.getSourceMAC()); |
| 153 | return; |
| 154 | } |
sangho | 6032f34 | 2016-07-07 14:32:03 +0900 | [diff] [blame] | 155 | |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 156 | // TODO Considers icmp between internal subnets belong to the same router. |
| 157 | // TODO do we have to support ICMP reply for non-existing gateway? |
| 158 | Ip4Address gatewayIp = Ip4Address.valueOf( |
| 159 | reqHost.get().annotations().value(Constants.GATEWAY_IP)); |
| 160 | if (Objects.equals(ipPacket.getDestinationAddress(), gatewayIp.toInt())) { |
| 161 | processRequestToGateway(ipPacket, reqHost.get()); |
| 162 | } else { |
| 163 | Optional<Ip4Address> srcNatIp = getSrcNatIp(reqHost.get()); |
| 164 | if (!srcNatIp.isPresent()) { |
| 165 | log.trace("VM {} has no external connection", reqHost.get()); |
| 166 | return; |
| 167 | } |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 168 | |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 169 | sendRequestToExternal(ipPacket, srcDevice, srcNatIp.get()); |
| 170 | String icmpInfoKey = String.valueOf(icmpId) |
| 171 | .concat(String.valueOf(srcNatIp.get().toInt())) |
| 172 | .concat(String.valueOf(ipPacket.getDestinationAddress())); |
| 173 | icmpInfoMap.putIfAbsent(icmpInfoKey, reqHost.get()); |
| 174 | } |
| 175 | break; |
| 176 | case ICMP.TYPE_ECHO_REPLY: |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 177 | String icmpInfoKey = String.valueOf(icmpId) |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 178 | .concat(String.valueOf(ipPacket.getDestinationAddress())) |
| 179 | .concat(String.valueOf(ipPacket.getSourceAddress())); |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 180 | |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 181 | processReplyFromExternal(ipPacket, icmpInfoMap.get(icmpInfoKey)); |
| 182 | icmpInfoMap.remove(icmpInfoKey); |
| 183 | break; |
| 184 | default: |
| 185 | break; |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 186 | } |
| 187 | } |
| 188 | |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 189 | // TODO do we have to handle the request to the fake gateway? |
| 190 | private void processRequestToGateway(IPv4 ipPacket, Host reqHost) { |
| 191 | ICMP icmpReq = (ICMP) ipPacket.getPayload(); |
| 192 | icmpReq.setChecksum((short) 0); |
| 193 | icmpReq.setIcmpType(ICMP.TYPE_ECHO_REPLY).resetChecksum(); |
| 194 | |
Daniel Park | 1063c23 | 2016-08-02 18:53:47 +0900 | [diff] [blame] | 195 | int destinationAddress = ipPacket.getSourceAddress(); |
| 196 | |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 197 | ipPacket.setSourceAddress(ipPacket.getDestinationAddress()) |
Daniel Park | 1063c23 | 2016-08-02 18:53:47 +0900 | [diff] [blame] | 198 | .setDestinationAddress(destinationAddress) |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 199 | .resetChecksum(); |
| 200 | |
| 201 | ipPacket.setPayload(icmpReq); |
| 202 | Ethernet icmpReply = new Ethernet(); |
| 203 | icmpReply.setEtherType(Ethernet.TYPE_IPV4) |
| 204 | .setSourceMACAddress(Constants.DEFAULT_GATEWAY_MAC) |
| 205 | .setDestinationMACAddress(reqHost.mac()) |
Daniel Park | 1063c23 | 2016-08-02 18:53:47 +0900 | [diff] [blame] | 206 | .setPayload(ipPacket); |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 207 | |
| 208 | sendReply(icmpReply, reqHost); |
hyungseo Ryu | 38b5f18 | 2016-06-14 16:42:27 +0900 | [diff] [blame] | 209 | } |
| 210 | |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 211 | private void sendRequestToExternal(IPv4 ipPacket, DeviceId srcDevice, Ip4Address srcNatIp) { |
| 212 | ICMP icmpReq = (ICMP) ipPacket.getPayload(); |
| 213 | icmpReq.resetChecksum(); |
| 214 | ipPacket.setSourceAddress(srcNatIp.toInt()).resetChecksum(); |
| 215 | ipPacket.setPayload(icmpReq); |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 216 | |
| 217 | Ethernet icmpRequestEth = new Ethernet(); |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 218 | icmpRequestEth.setEtherType(Ethernet.TYPE_IPV4) |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 219 | .setSourceMACAddress(DEFAULT_GATEWAY_MAC) |
| 220 | .setDestinationMACAddress(DEFAULT_EXTERNAL_ROUTER_MAC) |
| 221 | .setPayload(ipPacket); |
Kyuhwi Choi | 92d9ea4 | 2016-06-13 17:28:00 +0900 | [diff] [blame] | 222 | |
sangho | 6032f34 | 2016-07-07 14:32:03 +0900 | [diff] [blame] | 223 | TrafficTreatment treatment = DefaultTrafficTreatment.builder() |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 224 | .setOutput(gatewayService.getUplinkPort(srcDevice)) |
sangho | 6032f34 | 2016-07-07 14:32:03 +0900 | [diff] [blame] | 225 | .build(); |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 226 | |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 227 | OutboundPacket packet = new DefaultOutboundPacket( |
| 228 | srcDevice, |
| 229 | treatment, |
| 230 | ByteBuffer.wrap(icmpRequestEth.serialize())); |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 231 | |
| 232 | packetService.emit(packet); |
| 233 | } |
| 234 | |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 235 | private void processReplyFromExternal(IPv4 ipPacket, Host dstHost) { |
| 236 | ICMP icmpReply = (ICMP) ipPacket.getPayload(); |
| 237 | icmpReply.resetChecksum(); |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 238 | |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 239 | Ip4Address ipAddress = dstHost.ipAddresses().stream().findFirst().get().getIp4Address(); |
| 240 | ipPacket.setDestinationAddress(ipAddress.toInt()) |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 241 | .resetChecksum(); |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 242 | ipPacket.setPayload(icmpReply); |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 243 | |
| 244 | Ethernet icmpResponseEth = new Ethernet(); |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 245 | icmpResponseEth.setEtherType(Ethernet.TYPE_IPV4) |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 246 | .setSourceMACAddress(Constants.DEFAULT_GATEWAY_MAC) |
| 247 | .setDestinationMACAddress(dstHost.mac()) |
| 248 | .setPayload(ipPacket); |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 249 | |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 250 | sendReply(icmpResponseEth, dstHost); |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 251 | } |
| 252 | |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 253 | private void sendReply(Ethernet icmpReply, Host dstHost) { |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 254 | TrafficTreatment treatment = DefaultTrafficTreatment.builder() |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 255 | .setOutput(dstHost.location().port()) |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 256 | .build(); |
| 257 | |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 258 | OutboundPacket packet = new DefaultOutboundPacket( |
| 259 | dstHost.location().deviceId(), |
| 260 | treatment, |
| 261 | ByteBuffer.wrap(icmpReply.serialize())); |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 262 | |
| 263 | packetService.emit(packet); |
| 264 | } |
| 265 | |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 266 | private Optional<Ip4Address> getSrcNatIp(Host host) { |
| 267 | // TODO cache external gateway IP for each network because |
| 268 | // asking Neutron for every ICMP request is a bad idea |
| 269 | Optional<OpenstackPort> osPort = openstackService.ports().stream() |
| 270 | .filter(port -> port.deviceOwner().equals(DEVICE_OWNER_ROUTER_INTERFACE) && |
| 271 | Objects.equals(host.annotations().value(NETWORK_ID), |
| 272 | port.networkId())) |
| 273 | .findAny(); |
| 274 | if (!osPort.isPresent()) { |
| 275 | return Optional.empty(); |
| 276 | } |
| 277 | |
| 278 | OpenstackRouter osRouter = openstackService.router(osPort.get().deviceId()); |
| 279 | if (osRouter == null) { |
| 280 | return Optional.empty(); |
| 281 | } |
| 282 | |
| 283 | return osRouter.gatewayExternalInfo().externalFixedIps() |
| 284 | .values().stream().findAny(); |
| 285 | } |
| 286 | |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 287 | private short getIcmpId(ICMP icmp) { |
| 288 | return ByteBuffer.wrap(icmp.serialize(), 4, 2).getShort(); |
| 289 | } |
| 290 | |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 291 | private class InternalPacketProcessor implements PacketProcessor { |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 292 | |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 293 | @Override |
| 294 | public void process(PacketContext context) { |
| 295 | if (context.isHandled()) { |
| 296 | return; |
| 297 | } else if (!gatewayService.getGatewayDeviceIds().contains( |
| 298 | context.inPacket().receivedFrom().deviceId())) { |
| 299 | // return if the packet is not from gateway nodes |
| 300 | return; |
| 301 | } |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 302 | |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 303 | InboundPacket pkt = context.inPacket(); |
| 304 | Ethernet ethernet = pkt.parsed(); |
| 305 | if (ethernet == null || ethernet.getEtherType() == Ethernet.TYPE_ARP) { |
| 306 | return; |
| 307 | } |
Daniel Park | 81a61a1 | 2016-02-26 08:24:44 +0900 | [diff] [blame] | 308 | |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 309 | IPv4 iPacket = (IPv4) ethernet.getPayload(); |
| 310 | if (iPacket.getProtocol() == IPv4.PROTOCOL_ICMP) { |
| 311 | eventExecutor.execute(() -> processIcmpPacket(context, ethernet)); |
| 312 | } |
hyungseo Ryu | 38b5f18 | 2016-06-14 16:42:27 +0900 | [diff] [blame] | 313 | } |
hyungseo Ryu | 38b5f18 | 2016-06-14 16:42:27 +0900 | [diff] [blame] | 314 | } |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 315 | |
| 316 | private class InternalNodeListener implements OpenstackNodeListener { |
| 317 | |
| 318 | @Override |
| 319 | public void event(OpenstackNodeEvent event) { |
| 320 | OpenstackNode node = event.node(); |
| 321 | |
| 322 | switch (event.type()) { |
| 323 | case COMPLETE: |
| 324 | if (node.type() == GATEWAY) { |
| 325 | log.info("GATEWAY node {} detected", node.hostname()); |
Hyunsun Moon | 5aa480b | 2016-08-03 12:23:14 -0700 | [diff] [blame] | 326 | eventExecutor.execute(() -> { |
| 327 | GatewayNode gnode = GatewayNode.builder() |
| 328 | .gatewayDeviceId(node.intBridge()) |
| 329 | .dataIpAddress(node.dataIp().getIp4Address()) |
| 330 | .uplinkIntf(node.externalPortName().get()) |
| 331 | .build(); |
| 332 | gatewayService.addGatewayNode(gnode); |
| 333 | requestPacket(appId); |
| 334 | }); |
Hyunsun Moon | b3eb84d | 2016-07-27 19:10:52 -0700 | [diff] [blame] | 335 | } |
| 336 | break; |
| 337 | case INIT: |
| 338 | case DEVICE_CREATED: |
| 339 | case INCOMPLETE: |
| 340 | default: |
| 341 | break; |
| 342 | } |
| 343 | } |
Kyuhwi Choi | 92d9ea4 | 2016-06-13 17:28:00 +0900 | [diff] [blame] | 344 | } |
| 345 | } |