Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2019-present Open Networking Foundation |
| 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 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 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.k8snetworking.impl; |
| 17 | |
| 18 | import org.onlab.packet.ARP; |
| 19 | import org.onlab.packet.EthType; |
| 20 | import org.onlab.packet.Ethernet; |
| 21 | import org.onlab.packet.Ip4Address; |
| 22 | import org.onlab.packet.IpAddress; |
| 23 | import org.onlab.packet.MacAddress; |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 24 | import org.onlab.packet.VlanId; |
| 25 | import org.onlab.util.KryoNamespace; |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 26 | import org.onlab.util.Tools; |
| 27 | import org.onosproject.cfg.ComponentConfigService; |
| 28 | import org.onosproject.cfg.ConfigProperty; |
| 29 | import org.onosproject.cluster.ClusterService; |
| 30 | import org.onosproject.cluster.LeadershipService; |
| 31 | import org.onosproject.cluster.NodeId; |
| 32 | import org.onosproject.core.ApplicationId; |
| 33 | import org.onosproject.core.CoreService; |
| 34 | import org.onosproject.k8snetworking.api.K8sFlowRuleService; |
Jian Li | 140d8a2 | 2019-04-24 23:41:44 +0900 | [diff] [blame] | 35 | import org.onosproject.k8snetworking.api.K8sNetwork; |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 36 | import org.onosproject.k8snetworking.api.K8sNetworkService; |
| 37 | import org.onosproject.k8snetworking.api.K8sPort; |
Jian Li | 7d111d7 | 2019-04-12 13:58:44 +0900 | [diff] [blame] | 38 | import org.onosproject.k8snetworking.api.K8sServiceService; |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 39 | import org.onosproject.k8snode.api.K8sNode; |
| 40 | import org.onosproject.k8snode.api.K8sNodeEvent; |
| 41 | import org.onosproject.k8snode.api.K8sNodeListener; |
| 42 | import org.onosproject.k8snode.api.K8sNodeService; |
| 43 | import org.onosproject.mastership.MastershipService; |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 44 | import org.onosproject.net.ConnectPoint; |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 45 | import org.onosproject.net.PortNumber; |
| 46 | import org.onosproject.net.device.DeviceService; |
| 47 | import org.onosproject.net.flow.DefaultTrafficSelector; |
| 48 | import org.onosproject.net.flow.DefaultTrafficTreatment; |
| 49 | import org.onosproject.net.flow.TrafficSelector; |
| 50 | import org.onosproject.net.flow.TrafficTreatment; |
| 51 | import org.onosproject.net.packet.DefaultOutboundPacket; |
| 52 | import org.onosproject.net.packet.PacketContext; |
| 53 | import org.onosproject.net.packet.PacketProcessor; |
| 54 | import org.onosproject.net.packet.PacketService; |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 55 | import org.onosproject.store.serializers.KryoNamespaces; |
| 56 | import org.onosproject.store.service.ConsistentMap; |
| 57 | import org.onosproject.store.service.Serializer; |
| 58 | import org.onosproject.store.service.StorageService; |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 59 | import org.osgi.service.component.ComponentContext; |
| 60 | import org.osgi.service.component.annotations.Activate; |
| 61 | import org.osgi.service.component.annotations.Component; |
| 62 | import org.osgi.service.component.annotations.Deactivate; |
| 63 | import org.osgi.service.component.annotations.Modified; |
| 64 | import org.osgi.service.component.annotations.Reference; |
| 65 | import org.osgi.service.component.annotations.ReferenceCardinality; |
| 66 | import org.slf4j.Logger; |
| 67 | import org.slf4j.LoggerFactory; |
| 68 | |
| 69 | import java.nio.ByteBuffer; |
| 70 | import java.util.Dictionary; |
| 71 | import java.util.Objects; |
| 72 | import java.util.Set; |
| 73 | import java.util.concurrent.ExecutorService; |
Jian Li | 7d111d7 | 2019-04-12 13:58:44 +0900 | [diff] [blame] | 74 | import java.util.stream.Collectors; |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 75 | |
| 76 | import static java.util.concurrent.Executors.newSingleThreadExecutor; |
| 77 | import static org.onlab.util.Tools.groupedThreads; |
| 78 | import static org.onosproject.k8snetworking.api.Constants.ARP_BROADCAST_MODE; |
| 79 | import static org.onosproject.k8snetworking.api.Constants.ARP_PROXY_MODE; |
| 80 | import static org.onosproject.k8snetworking.api.Constants.ARP_TABLE; |
| 81 | import static org.onosproject.k8snetworking.api.Constants.K8S_NETWORKING_APP_ID; |
Jian Li | 140d8a2 | 2019-04-24 23:41:44 +0900 | [diff] [blame] | 82 | import static org.onosproject.k8snetworking.api.Constants.NODE_IP_PREFIX; |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 83 | import static org.onosproject.k8snetworking.api.Constants.PRIORITY_ARP_CONTROL_RULE; |
Jian Li | 7d111d7 | 2019-04-12 13:58:44 +0900 | [diff] [blame] | 84 | import static org.onosproject.k8snetworking.api.Constants.SERVICE_FAKE_MAC_STR; |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 85 | import static org.onosproject.k8snetworking.impl.OsgiPropertyConstants.ARP_MODE; |
| 86 | import static org.onosproject.k8snetworking.impl.OsgiPropertyConstants.ARP_MODE_DEFAULT; |
| 87 | import static org.onosproject.k8snetworking.impl.OsgiPropertyConstants.GATEWAY_MAC; |
| 88 | import static org.onosproject.k8snetworking.impl.OsgiPropertyConstants.GATEWAY_MAC_DEFAULT; |
Jian Li | 140d8a2 | 2019-04-24 23:41:44 +0900 | [diff] [blame] | 89 | import static org.onosproject.k8snetworking.api.Constants.SHIFTED_IP_PREFIX; |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 90 | import static org.onosproject.k8snetworking.util.K8sNetworkingUtil.getPropertyValue; |
Jian Li | 004526d | 2019-02-25 16:26:27 +0900 | [diff] [blame] | 91 | import static org.onosproject.k8snetworking.util.K8sNetworkingUtil.unshiftIpDomain; |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 92 | |
| 93 | /** |
| 94 | * Handles ARP packet from containers. |
| 95 | */ |
| 96 | @Component( |
| 97 | immediate = true, |
| 98 | property = { |
| 99 | GATEWAY_MAC + "=" + GATEWAY_MAC_DEFAULT, |
| 100 | ARP_MODE + "=" + ARP_MODE_DEFAULT |
| 101 | } |
| 102 | ) |
| 103 | public class K8sSwitchingArpHandler { |
| 104 | |
| 105 | private final Logger log = LoggerFactory.getLogger(getClass()); |
| 106 | |
Jian Li | 7d111d7 | 2019-04-12 13:58:44 +0900 | [diff] [blame] | 107 | private static final String GATEWAY_MAC = "gatewayMac"; |
| 108 | private static final String ARP_MODE = "arpMode"; |
| 109 | |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 110 | private static final KryoNamespace SERIALIZER_HOST_MAC = KryoNamespace.newBuilder() |
| 111 | .register(KryoNamespaces.API) |
| 112 | .build(); |
| 113 | |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 114 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 115 | protected CoreService coreService; |
| 116 | |
| 117 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 118 | protected PacketService packetService; |
| 119 | |
| 120 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 121 | protected ComponentConfigService configService; |
| 122 | |
| 123 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 124 | protected ClusterService clusterService; |
| 125 | |
| 126 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 127 | protected LeadershipService leadershipService; |
| 128 | |
| 129 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 130 | protected DeviceService deviceService; |
| 131 | |
| 132 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 133 | protected MastershipService mastershipService; |
| 134 | |
| 135 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 136 | protected StorageService storageService; |
| 137 | |
| 138 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 139 | protected K8sNodeService k8sNodeService; |
| 140 | |
| 141 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 142 | protected K8sNetworkService k8sNetworkService; |
| 143 | |
| 144 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 145 | protected K8sFlowRuleService k8sFlowRuleService; |
| 146 | |
Jian Li | 7d111d7 | 2019-04-12 13:58:44 +0900 | [diff] [blame] | 147 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 148 | protected K8sServiceService k8sServiceService; |
| 149 | |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 150 | /** Fake MAC address for virtual network subnet gateway. */ |
| 151 | private String gatewayMac = GATEWAY_MAC_DEFAULT; |
| 152 | |
| 153 | /** ARP processing mode, broadcast | proxy (default). */ |
| 154 | protected String arpMode = ARP_MODE_DEFAULT; |
| 155 | |
| 156 | private MacAddress gwMacAddress; |
| 157 | |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 158 | private ConsistentMap<IpAddress, MacAddress> extHostMacStore; |
| 159 | |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 160 | private final ExecutorService eventExecutor = newSingleThreadExecutor( |
| 161 | groupedThreads(this.getClass().getSimpleName(), "event-handler", log)); |
| 162 | |
| 163 | private final InternalPacketProcessor packetProcessor = new InternalPacketProcessor(); |
| 164 | private final InternalNodeEventListener k8sNodeListener = new InternalNodeEventListener(); |
| 165 | |
| 166 | private ApplicationId appId; |
| 167 | private NodeId localNodeId; |
| 168 | |
| 169 | @Activate |
| 170 | void activate() { |
| 171 | appId = coreService.registerApplication(K8S_NETWORKING_APP_ID); |
| 172 | configService.registerProperties(getClass()); |
| 173 | localNodeId = clusterService.getLocalNode().id(); |
| 174 | leadershipService.runForLeadership(appId.name()); |
| 175 | k8sNodeService.addListener(k8sNodeListener); |
| 176 | packetService.addProcessor(packetProcessor, PacketProcessor.director(0)); |
| 177 | |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 178 | extHostMacStore = storageService.<IpAddress, MacAddress>consistentMapBuilder() |
| 179 | .withSerializer(Serializer.using(SERIALIZER_HOST_MAC)) |
| 180 | .withName("k8s-host-mac-store") |
| 181 | .withApplicationId(appId) |
| 182 | .build(); |
| 183 | |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 184 | log.info("Started"); |
| 185 | } |
| 186 | |
| 187 | @Deactivate |
| 188 | void deactivate() { |
| 189 | packetService.removeProcessor(packetProcessor); |
| 190 | k8sNodeService.removeListener(k8sNodeListener); |
| 191 | leadershipService.withdraw(appId.name()); |
| 192 | configService.unregisterProperties(getClass(), false); |
| 193 | eventExecutor.shutdown(); |
| 194 | |
| 195 | log.info("Stopped"); |
| 196 | } |
| 197 | |
| 198 | @Modified |
| 199 | void modified(ComponentContext context) { |
| 200 | readComponentConfiguration(context); |
| 201 | |
| 202 | log.info("Modified"); |
| 203 | } |
| 204 | |
| 205 | /** |
| 206 | * Processes ARP request packets. |
| 207 | * |
| 208 | * @param context packet context |
| 209 | * @param ethPacket ethernet packet |
| 210 | */ |
| 211 | private void processPacketIn(PacketContext context, Ethernet ethPacket) { |
| 212 | // if the ARP mode is configured as broadcast mode, we simply ignore ARP packet_in |
| 213 | if (ARP_BROADCAST_MODE.equals(getArpMode())) { |
| 214 | return; |
| 215 | } |
| 216 | |
| 217 | ARP arpPacket = (ARP) ethPacket.getPayload(); |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 218 | if (arpPacket.getOpCode() == ARP.OP_REQUEST) { |
| 219 | processArpRequest(context, ethPacket); |
| 220 | } else if (arpPacket.getOpCode() == ARP.OP_REPLY) { |
| 221 | processArpReply(context, ethPacket); |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 222 | } |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 223 | } |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 224 | |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 225 | private void processArpRequest(PacketContext context, Ethernet ethPacket) { |
| 226 | ARP arpPacket = (ARP) ethPacket.getPayload(); |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 227 | K8sPort srcPort = k8sNetworkService.ports().stream() |
| 228 | .filter(p -> p.macAddress().equals(ethPacket.getSourceMAC())) |
| 229 | .findAny().orElse(null); |
| 230 | |
| 231 | if (srcPort == null && !context.inPacket().receivedFrom().port() |
| 232 | .equals(PortNumber.LOCAL)) { |
| 233 | log.warn("Failed to find source port(MAC:{})", ethPacket.getSourceMAC()); |
| 234 | return; |
| 235 | } |
| 236 | |
| 237 | // FIXME: this is a workaround for storing host GW MAC address, |
| 238 | // need to find a way to store the MAC address in persistent way |
| 239 | if (context.inPacket().receivedFrom().port().equals(PortNumber.LOCAL)) { |
| 240 | gwMacAddress = ethPacket.getSourceMAC(); |
| 241 | } |
| 242 | |
| 243 | IpAddress targetIp = Ip4Address.valueOf(arpPacket.getTargetProtocolAddress()); |
| 244 | |
| 245 | MacAddress replyMac = k8sNetworkService.ports().stream() |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 246 | // .filter(p -> p.networkId().equals(srcPort.networkId())) |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 247 | .filter(p -> p.ipAddress().equals(targetIp)) |
| 248 | .map(K8sPort::macAddress) |
| 249 | .findAny().orElse(null); |
| 250 | |
| 251 | long gwIpCnt = k8sNetworkService.networks().stream() |
| 252 | .filter(n -> n.gatewayIp().equals(targetIp)) |
| 253 | .count(); |
| 254 | |
Jian Li | 7d111d7 | 2019-04-12 13:58:44 +0900 | [diff] [blame] | 255 | if (gwIpCnt > 0) { |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 256 | replyMac = gwMacAddress; |
| 257 | } |
| 258 | |
| 259 | if (replyMac == null) { |
Jian Li | 140d8a2 | 2019-04-24 23:41:44 +0900 | [diff] [blame] | 260 | String cidr = k8sNetworkService.networks().stream() |
| 261 | .map(K8sNetwork::cidr).findAny().orElse(null); |
| 262 | |
| 263 | if (cidr != null) { |
| 264 | String unshiftedIp = unshiftIpDomain(targetIp.toString(), |
| 265 | SHIFTED_IP_PREFIX, cidr); |
| 266 | |
Jian Li | 004526d | 2019-02-25 16:26:27 +0900 | [diff] [blame] | 267 | replyMac = k8sNetworkService.ports().stream() |
Jian Li | 140d8a2 | 2019-04-24 23:41:44 +0900 | [diff] [blame] | 268 | .filter(p -> p.ipAddress().equals(IpAddress.valueOf(unshiftedIp))) |
Jian Li | 004526d | 2019-02-25 16:26:27 +0900 | [diff] [blame] | 269 | .map(K8sPort::macAddress) |
| 270 | .findAny().orElse(null); |
Jian Li | 004526d | 2019-02-25 16:26:27 +0900 | [diff] [blame] | 271 | } |
| 272 | } |
| 273 | |
| 274 | if (replyMac == null) { |
Jian Li | 7d111d7 | 2019-04-12 13:58:44 +0900 | [diff] [blame] | 275 | Set<String> serviceIps = k8sServiceService.services().stream() |
| 276 | .map(s -> s.getSpec().getClusterIP()) |
| 277 | .collect(Collectors.toSet()); |
| 278 | if (serviceIps.contains(targetIp.toString())) { |
| 279 | replyMac = MacAddress.valueOf(SERVICE_FAKE_MAC_STR); |
| 280 | } |
| 281 | } |
| 282 | |
| 283 | if (replyMac == null) { |
Jian Li | 140d8a2 | 2019-04-24 23:41:44 +0900 | [diff] [blame] | 284 | |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 285 | if (targetIp.toString().startsWith(NODE_IP_PREFIX)) { |
| 286 | String targetIpPrefix = targetIp.toString().split("\\.")[1]; |
| 287 | String nodePrefix = NODE_IP_PREFIX + "." + targetIpPrefix; |
Jian Li | 140d8a2 | 2019-04-24 23:41:44 +0900 | [diff] [blame] | 288 | |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 289 | String exBridgeCidr = k8sNodeService.completeNodes().stream() |
| 290 | .map(n -> n.extBridgeIp().toString()).findAny().orElse(null); |
Jian Li | 140d8a2 | 2019-04-24 23:41:44 +0900 | [diff] [blame] | 291 | |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 292 | if (exBridgeCidr != null) { |
| 293 | String extBridgeIp = unshiftIpDomain(targetIp.toString(), |
| 294 | nodePrefix, exBridgeCidr); |
| 295 | |
| 296 | replyMac = k8sNodeService.completeNodes().stream() |
| 297 | .filter(n -> extBridgeIp.equals(n.extBridgeIp().toString())) |
| 298 | .map(K8sNode::extBridgeMac).findAny().orElse(null); |
| 299 | |
| 300 | if (replyMac == null) { |
| 301 | replyMac = extHostMacStore.asJavaMap().get( |
| 302 | IpAddress.valueOf(extBridgeIp)); |
| 303 | } |
| 304 | |
| 305 | // if the source hosts are not in k8s cluster range, |
| 306 | // we need to manually learn their MAC addresses |
| 307 | if (replyMac == null) { |
| 308 | ConnectPoint cp = context.inPacket().receivedFrom(); |
| 309 | K8sNode k8sNode = k8sNodeService.node(cp.deviceId()); |
| 310 | |
| 311 | if (k8sNode != null) { |
| 312 | setArpRequest(k8sNode.extBridgeMac().toBytes(), |
| 313 | k8sNode.extBridgeIp().toOctets(), |
| 314 | IpAddress.valueOf(extBridgeIp).toOctets(), |
| 315 | k8sNode); |
| 316 | context.block(); |
| 317 | return; |
| 318 | } |
| 319 | } |
| 320 | } |
Jian Li | 140d8a2 | 2019-04-24 23:41:44 +0900 | [diff] [blame] | 321 | } |
| 322 | } |
| 323 | |
| 324 | if (replyMac == null) { |
Jian Li | eb488ea | 2019-04-16 01:50:02 +0900 | [diff] [blame] | 325 | replyMac = MacAddress.valueOf(gatewayMac); |
| 326 | } |
| 327 | |
| 328 | if (replyMac == null) { |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 329 | log.debug("Failed to find MAC address for {}", targetIp); |
| 330 | return; |
| 331 | } |
| 332 | |
| 333 | Ethernet ethReply = ARP.buildArpReply( |
| 334 | targetIp.getIp4Address(), |
| 335 | replyMac, |
| 336 | ethPacket); |
| 337 | |
| 338 | TrafficTreatment treatment = DefaultTrafficTreatment.builder() |
| 339 | .setOutput(context.inPacket().receivedFrom().port()) |
| 340 | .build(); |
| 341 | |
| 342 | packetService.emit(new DefaultOutboundPacket( |
| 343 | context.inPacket().receivedFrom().deviceId(), |
| 344 | treatment, |
| 345 | ByteBuffer.wrap(ethReply.serialize()))); |
Jian Li | 1b08d65 | 2019-05-02 17:28:09 +0900 | [diff] [blame] | 346 | |
| 347 | context.block(); |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 348 | } |
| 349 | |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 350 | private void processArpReply(PacketContext context, Ethernet ethPacket) { |
| 351 | ARP arpPacket = (ARP) ethPacket.getPayload(); |
| 352 | ConnectPoint cp = context.inPacket().receivedFrom(); |
| 353 | K8sNode k8sNode = k8sNodeService.node(cp.deviceId()); |
| 354 | |
| 355 | if (k8sNode != null && |
| 356 | ethPacket.getDestinationMAC().equals(k8sNode.extBridgeMac())) { |
| 357 | IpAddress srcIp = IpAddress.valueOf(IpAddress.Version.INET, |
| 358 | arpPacket.getSenderProtocolAddress()); |
| 359 | MacAddress srcMac = MacAddress.valueOf(arpPacket.getSenderHardwareAddress()); |
| 360 | |
| 361 | // we only add the host IP - MAC map store once, |
| 362 | // mutable MAP scenario is not considered for now |
| 363 | if (!extHostMacStore.containsKey(srcIp)) { |
| 364 | extHostMacStore.put(srcIp, srcMac); |
| 365 | } |
| 366 | } |
| 367 | } |
| 368 | |
| 369 | private void setArpRequest(byte[] senderMac, byte[] senderIp, |
| 370 | byte[] targetIp, K8sNode k8sNode) { |
| 371 | Ethernet ethRequest = ARP.buildArpRequest(senderMac, |
| 372 | senderIp, targetIp, VlanId.NO_VID); |
| 373 | |
| 374 | TrafficTreatment treatment = DefaultTrafficTreatment.builder() |
| 375 | .setOutput(k8sNode.intgToExtPatchPortNum()) |
| 376 | .build(); |
| 377 | |
| 378 | packetService.emit(new DefaultOutboundPacket( |
| 379 | k8sNode.intgBridge(), |
| 380 | treatment, |
| 381 | ByteBuffer.wrap(ethRequest.serialize()))); |
| 382 | } |
| 383 | |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 384 | private String getArpMode() { |
| 385 | Set<ConfigProperty> properties = configService.getProperties(this.getClass().getName()); |
| 386 | return getPropertyValue(properties, ARP_MODE); |
| 387 | } |
| 388 | |
| 389 | /** |
| 390 | * Extracts properties from the component configuration context. |
| 391 | * |
| 392 | * @param context the component context |
| 393 | */ |
| 394 | private void readComponentConfiguration(ComponentContext context) { |
| 395 | Dictionary<?, ?> properties = context.getProperties(); |
| 396 | |
| 397 | String updatedMac = Tools.get(properties, GATEWAY_MAC); |
| 398 | gatewayMac = updatedMac != null ? updatedMac : GATEWAY_MAC_DEFAULT; |
| 399 | log.info("Configured. Gateway MAC is {}", gatewayMac); |
| 400 | } |
| 401 | |
| 402 | /** |
| 403 | * An internal packet processor which processes ARP request, and results in |
| 404 | * packet-out ARP reply. |
| 405 | */ |
| 406 | private class InternalPacketProcessor implements PacketProcessor { |
| 407 | |
| 408 | @Override |
| 409 | public void process(PacketContext context) { |
| 410 | if (context.isHandled()) { |
| 411 | return; |
| 412 | } |
| 413 | |
| 414 | Ethernet ethPacket = context.inPacket().parsed(); |
| 415 | if (ethPacket == null || ethPacket.getEtherType() != Ethernet.TYPE_ARP) { |
| 416 | return; |
| 417 | } |
| 418 | |
| 419 | eventExecutor.execute(() -> processPacketIn(context, ethPacket)); |
| 420 | } |
| 421 | } |
| 422 | |
| 423 | /** |
| 424 | * An internal kubernetes node listener which is used for listening kubernetes |
| 425 | * node activity. As long as a node is in complete state, we will install |
| 426 | * default ARP rule to handle ARP request. |
| 427 | */ |
| 428 | private class InternalNodeEventListener implements K8sNodeListener { |
| 429 | |
| 430 | private boolean isRelevantHelper() { |
| 431 | return Objects.equals(localNodeId, leadershipService.getLeader(appId.name())); |
| 432 | } |
| 433 | |
| 434 | @Override |
| 435 | public void event(K8sNodeEvent event) { |
| 436 | K8sNode k8sNode = event.subject(); |
| 437 | switch (event.type()) { |
| 438 | case K8S_NODE_COMPLETE: |
| 439 | eventExecutor.execute(() -> processNodeCompletion(k8sNode)); |
| 440 | break; |
| 441 | case K8S_NODE_INCOMPLETE: |
| 442 | eventExecutor.execute(() -> processNodeIncompletion(k8sNode)); |
| 443 | break; |
| 444 | default: |
| 445 | break; |
| 446 | } |
| 447 | } |
| 448 | |
| 449 | private void processNodeCompletion(K8sNode node) { |
| 450 | if (!isRelevantHelper()) { |
| 451 | return; |
| 452 | } |
| 453 | |
| 454 | setDefaultArpRule(node, true); |
| 455 | } |
| 456 | |
| 457 | private void processNodeIncompletion(K8sNode node) { |
| 458 | if (!isRelevantHelper()) { |
| 459 | return; |
| 460 | } |
| 461 | |
| 462 | setDefaultArpRule(node, false); |
| 463 | } |
| 464 | |
| 465 | private void setDefaultArpRule(K8sNode node, boolean install) { |
| 466 | |
| 467 | if (getArpMode() == null) { |
| 468 | return; |
| 469 | } |
| 470 | |
| 471 | switch (getArpMode()) { |
| 472 | case ARP_PROXY_MODE: |
| 473 | setDefaultArpRuleForProxyMode(node, install); |
| 474 | break; |
| 475 | case ARP_BROADCAST_MODE: |
| 476 | // TODO: need to implement broadcast mode |
| 477 | log.warn("Not implemented yet."); |
| 478 | break; |
| 479 | default: |
| 480 | log.warn("Invalid ARP mode {}. Please use either " + |
| 481 | "broadcast or proxy mode.", getArpMode()); |
| 482 | break; |
| 483 | } |
| 484 | } |
| 485 | |
| 486 | private void setDefaultArpRuleForProxyMode(K8sNode node, boolean install) { |
| 487 | TrafficSelector selector = DefaultTrafficSelector.builder() |
| 488 | .matchEthType(EthType.EtherType.ARP.ethType().toShort()) |
| 489 | .build(); |
| 490 | |
| 491 | TrafficTreatment treatment = DefaultTrafficTreatment.builder() |
| 492 | .punt() |
| 493 | .build(); |
| 494 | |
| 495 | k8sFlowRuleService.setRule( |
| 496 | appId, |
| 497 | node.intgBridge(), |
| 498 | selector, |
| 499 | treatment, |
| 500 | PRIORITY_ARP_CONTROL_RULE, |
| 501 | ARP_TABLE, |
| 502 | install |
| 503 | ); |
| 504 | } |
| 505 | } |
| 506 | } |