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 | eab5135 | 2020-09-11 03:29:16 +0900 | [diff] [blame^] | 39 | import org.onosproject.k8snode.api.K8sHostService; |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 40 | import org.onosproject.k8snode.api.K8sNode; |
| 41 | import org.onosproject.k8snode.api.K8sNodeEvent; |
| 42 | import org.onosproject.k8snode.api.K8sNodeListener; |
| 43 | import org.onosproject.k8snode.api.K8sNodeService; |
| 44 | import org.onosproject.mastership.MastershipService; |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 45 | import org.onosproject.net.ConnectPoint; |
Jian Li | eab5135 | 2020-09-11 03:29:16 +0900 | [diff] [blame^] | 46 | import org.onosproject.net.DeviceId; |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 47 | import org.onosproject.net.PortNumber; |
| 48 | import org.onosproject.net.device.DeviceService; |
| 49 | import org.onosproject.net.flow.DefaultTrafficSelector; |
| 50 | import org.onosproject.net.flow.DefaultTrafficTreatment; |
| 51 | import org.onosproject.net.flow.TrafficSelector; |
| 52 | import org.onosproject.net.flow.TrafficTreatment; |
| 53 | import org.onosproject.net.packet.DefaultOutboundPacket; |
| 54 | import org.onosproject.net.packet.PacketContext; |
| 55 | import org.onosproject.net.packet.PacketProcessor; |
| 56 | import org.onosproject.net.packet.PacketService; |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 57 | import org.onosproject.store.serializers.KryoNamespaces; |
| 58 | import org.onosproject.store.service.ConsistentMap; |
| 59 | import org.onosproject.store.service.Serializer; |
| 60 | import org.onosproject.store.service.StorageService; |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 61 | import org.osgi.service.component.ComponentContext; |
| 62 | import org.osgi.service.component.annotations.Activate; |
| 63 | import org.osgi.service.component.annotations.Component; |
| 64 | import org.osgi.service.component.annotations.Deactivate; |
| 65 | import org.osgi.service.component.annotations.Modified; |
| 66 | import org.osgi.service.component.annotations.Reference; |
| 67 | import org.osgi.service.component.annotations.ReferenceCardinality; |
| 68 | import org.slf4j.Logger; |
| 69 | import org.slf4j.LoggerFactory; |
| 70 | |
| 71 | import java.nio.ByteBuffer; |
| 72 | import java.util.Dictionary; |
| 73 | import java.util.Objects; |
| 74 | import java.util.Set; |
| 75 | import java.util.concurrent.ExecutorService; |
Jian Li | 7d111d7 | 2019-04-12 13:58:44 +0900 | [diff] [blame] | 76 | import java.util.stream.Collectors; |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 77 | |
| 78 | import static java.util.concurrent.Executors.newSingleThreadExecutor; |
| 79 | import static org.onlab.util.Tools.groupedThreads; |
| 80 | import static org.onosproject.k8snetworking.api.Constants.ARP_BROADCAST_MODE; |
| 81 | import static org.onosproject.k8snetworking.api.Constants.ARP_PROXY_MODE; |
| 82 | import static org.onosproject.k8snetworking.api.Constants.ARP_TABLE; |
| 83 | import static org.onosproject.k8snetworking.api.Constants.K8S_NETWORKING_APP_ID; |
Jian Li | 140d8a2 | 2019-04-24 23:41:44 +0900 | [diff] [blame] | 84 | import static org.onosproject.k8snetworking.api.Constants.NODE_IP_PREFIX; |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 85 | import static org.onosproject.k8snetworking.api.Constants.PRIORITY_ARP_CONTROL_RULE; |
Jian Li | 7d111d7 | 2019-04-12 13:58:44 +0900 | [diff] [blame] | 86 | import static org.onosproject.k8snetworking.api.Constants.SERVICE_FAKE_MAC_STR; |
Jian Li | eab5135 | 2020-09-11 03:29:16 +0900 | [diff] [blame^] | 87 | import static org.onosproject.k8snetworking.api.Constants.SHIFTED_IP_PREFIX; |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 88 | import static org.onosproject.k8snetworking.impl.OsgiPropertyConstants.ARP_MODE; |
| 89 | import static org.onosproject.k8snetworking.impl.OsgiPropertyConstants.ARP_MODE_DEFAULT; |
| 90 | import static org.onosproject.k8snetworking.impl.OsgiPropertyConstants.GATEWAY_MAC; |
| 91 | import static org.onosproject.k8snetworking.impl.OsgiPropertyConstants.GATEWAY_MAC_DEFAULT; |
Jian Li | eab5135 | 2020-09-11 03:29:16 +0900 | [diff] [blame^] | 92 | import static org.onosproject.k8snetworking.util.K8sNetworkingUtil.allK8sDevices; |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 93 | import static org.onosproject.k8snetworking.util.K8sNetworkingUtil.getPropertyValue; |
Jian Li | 004526d | 2019-02-25 16:26:27 +0900 | [diff] [blame] | 94 | import static org.onosproject.k8snetworking.util.K8sNetworkingUtil.unshiftIpDomain; |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 95 | |
| 96 | /** |
| 97 | * Handles ARP packet from containers. |
| 98 | */ |
| 99 | @Component( |
| 100 | immediate = true, |
| 101 | property = { |
| 102 | GATEWAY_MAC + "=" + GATEWAY_MAC_DEFAULT, |
| 103 | ARP_MODE + "=" + ARP_MODE_DEFAULT |
| 104 | } |
| 105 | ) |
| 106 | public class K8sSwitchingArpHandler { |
| 107 | |
| 108 | private final Logger log = LoggerFactory.getLogger(getClass()); |
| 109 | |
Jian Li | 7d111d7 | 2019-04-12 13:58:44 +0900 | [diff] [blame] | 110 | private static final String GATEWAY_MAC = "gatewayMac"; |
| 111 | private static final String ARP_MODE = "arpMode"; |
| 112 | |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 113 | private static final KryoNamespace SERIALIZER_HOST_MAC = KryoNamespace.newBuilder() |
| 114 | .register(KryoNamespaces.API) |
| 115 | .build(); |
| 116 | |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 117 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 118 | protected CoreService coreService; |
| 119 | |
| 120 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 121 | protected PacketService packetService; |
| 122 | |
| 123 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 124 | protected ComponentConfigService configService; |
| 125 | |
| 126 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 127 | protected ClusterService clusterService; |
| 128 | |
| 129 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 130 | protected LeadershipService leadershipService; |
| 131 | |
| 132 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 133 | protected DeviceService deviceService; |
| 134 | |
| 135 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 136 | protected MastershipService mastershipService; |
| 137 | |
| 138 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 139 | protected StorageService storageService; |
| 140 | |
| 141 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 142 | protected K8sNodeService k8sNodeService; |
| 143 | |
| 144 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
Jian Li | eab5135 | 2020-09-11 03:29:16 +0900 | [diff] [blame^] | 145 | protected K8sHostService k8sHostService; |
| 146 | |
| 147 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 148 | protected K8sNetworkService k8sNetworkService; |
| 149 | |
| 150 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 151 | protected K8sFlowRuleService k8sFlowRuleService; |
| 152 | |
Jian Li | 7d111d7 | 2019-04-12 13:58:44 +0900 | [diff] [blame] | 153 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 154 | protected K8sServiceService k8sServiceService; |
| 155 | |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 156 | /** Fake MAC address for virtual network subnet gateway. */ |
| 157 | private String gatewayMac = GATEWAY_MAC_DEFAULT; |
| 158 | |
| 159 | /** ARP processing mode, broadcast | proxy (default). */ |
| 160 | protected String arpMode = ARP_MODE_DEFAULT; |
| 161 | |
| 162 | private MacAddress gwMacAddress; |
| 163 | |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 164 | private ConsistentMap<IpAddress, MacAddress> extHostMacStore; |
| 165 | |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 166 | private final ExecutorService eventExecutor = newSingleThreadExecutor( |
| 167 | groupedThreads(this.getClass().getSimpleName(), "event-handler", log)); |
| 168 | |
| 169 | private final InternalPacketProcessor packetProcessor = new InternalPacketProcessor(); |
| 170 | private final InternalNodeEventListener k8sNodeListener = new InternalNodeEventListener(); |
| 171 | |
| 172 | private ApplicationId appId; |
| 173 | private NodeId localNodeId; |
| 174 | |
| 175 | @Activate |
| 176 | void activate() { |
| 177 | appId = coreService.registerApplication(K8S_NETWORKING_APP_ID); |
| 178 | configService.registerProperties(getClass()); |
| 179 | localNodeId = clusterService.getLocalNode().id(); |
| 180 | leadershipService.runForLeadership(appId.name()); |
| 181 | k8sNodeService.addListener(k8sNodeListener); |
| 182 | packetService.addProcessor(packetProcessor, PacketProcessor.director(0)); |
| 183 | |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 184 | extHostMacStore = storageService.<IpAddress, MacAddress>consistentMapBuilder() |
| 185 | .withSerializer(Serializer.using(SERIALIZER_HOST_MAC)) |
| 186 | .withName("k8s-host-mac-store") |
| 187 | .withApplicationId(appId) |
| 188 | .build(); |
| 189 | |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 190 | log.info("Started"); |
| 191 | } |
| 192 | |
| 193 | @Deactivate |
| 194 | void deactivate() { |
| 195 | packetService.removeProcessor(packetProcessor); |
| 196 | k8sNodeService.removeListener(k8sNodeListener); |
| 197 | leadershipService.withdraw(appId.name()); |
| 198 | configService.unregisterProperties(getClass(), false); |
| 199 | eventExecutor.shutdown(); |
| 200 | |
| 201 | log.info("Stopped"); |
| 202 | } |
| 203 | |
| 204 | @Modified |
| 205 | void modified(ComponentContext context) { |
| 206 | readComponentConfiguration(context); |
| 207 | |
| 208 | log.info("Modified"); |
| 209 | } |
| 210 | |
| 211 | /** |
| 212 | * Processes ARP request packets. |
| 213 | * |
| 214 | * @param context packet context |
| 215 | * @param ethPacket ethernet packet |
| 216 | */ |
| 217 | private void processPacketIn(PacketContext context, Ethernet ethPacket) { |
| 218 | // if the ARP mode is configured as broadcast mode, we simply ignore ARP packet_in |
| 219 | if (ARP_BROADCAST_MODE.equals(getArpMode())) { |
| 220 | return; |
| 221 | } |
| 222 | |
Jian Li | eab5135 | 2020-09-11 03:29:16 +0900 | [diff] [blame^] | 223 | DeviceId deviceId = context.inPacket().receivedFrom().deviceId(); |
| 224 | |
| 225 | if (!allK8sDevices(k8sNodeService, k8sHostService).contains(deviceId)) { |
| 226 | return; |
| 227 | } |
| 228 | |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 229 | ARP arpPacket = (ARP) ethPacket.getPayload(); |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 230 | if (arpPacket.getOpCode() == ARP.OP_REQUEST) { |
| 231 | processArpRequest(context, ethPacket); |
| 232 | } else if (arpPacket.getOpCode() == ARP.OP_REPLY) { |
| 233 | processArpReply(context, ethPacket); |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 234 | } |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 235 | } |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 236 | |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 237 | private void processArpRequest(PacketContext context, Ethernet ethPacket) { |
| 238 | ARP arpPacket = (ARP) ethPacket.getPayload(); |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 239 | K8sPort srcPort = k8sNetworkService.ports().stream() |
| 240 | .filter(p -> p.macAddress().equals(ethPacket.getSourceMAC())) |
| 241 | .findAny().orElse(null); |
| 242 | |
| 243 | if (srcPort == null && !context.inPacket().receivedFrom().port() |
| 244 | .equals(PortNumber.LOCAL)) { |
| 245 | log.warn("Failed to find source port(MAC:{})", ethPacket.getSourceMAC()); |
| 246 | return; |
| 247 | } |
| 248 | |
| 249 | // FIXME: this is a workaround for storing host GW MAC address, |
| 250 | // need to find a way to store the MAC address in persistent way |
| 251 | if (context.inPacket().receivedFrom().port().equals(PortNumber.LOCAL)) { |
| 252 | gwMacAddress = ethPacket.getSourceMAC(); |
| 253 | } |
| 254 | |
| 255 | IpAddress targetIp = Ip4Address.valueOf(arpPacket.getTargetProtocolAddress()); |
| 256 | |
| 257 | MacAddress replyMac = k8sNetworkService.ports().stream() |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 258 | // .filter(p -> p.networkId().equals(srcPort.networkId())) |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 259 | .filter(p -> p.ipAddress().equals(targetIp)) |
| 260 | .map(K8sPort::macAddress) |
| 261 | .findAny().orElse(null); |
| 262 | |
| 263 | long gwIpCnt = k8sNetworkService.networks().stream() |
| 264 | .filter(n -> n.gatewayIp().equals(targetIp)) |
| 265 | .count(); |
| 266 | |
Jian Li | 7d111d7 | 2019-04-12 13:58:44 +0900 | [diff] [blame] | 267 | if (gwIpCnt > 0) { |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 268 | replyMac = gwMacAddress; |
| 269 | } |
| 270 | |
| 271 | if (replyMac == null) { |
Jian Li | 140d8a2 | 2019-04-24 23:41:44 +0900 | [diff] [blame] | 272 | String cidr = k8sNetworkService.networks().stream() |
| 273 | .map(K8sNetwork::cidr).findAny().orElse(null); |
| 274 | |
| 275 | if (cidr != null) { |
| 276 | String unshiftedIp = unshiftIpDomain(targetIp.toString(), |
| 277 | SHIFTED_IP_PREFIX, cidr); |
| 278 | |
Jian Li | 004526d | 2019-02-25 16:26:27 +0900 | [diff] [blame] | 279 | replyMac = k8sNetworkService.ports().stream() |
Jian Li | 140d8a2 | 2019-04-24 23:41:44 +0900 | [diff] [blame] | 280 | .filter(p -> p.ipAddress().equals(IpAddress.valueOf(unshiftedIp))) |
Jian Li | 004526d | 2019-02-25 16:26:27 +0900 | [diff] [blame] | 281 | .map(K8sPort::macAddress) |
| 282 | .findAny().orElse(null); |
Jian Li | 004526d | 2019-02-25 16:26:27 +0900 | [diff] [blame] | 283 | } |
| 284 | } |
| 285 | |
| 286 | if (replyMac == null) { |
Jian Li | 7d111d7 | 2019-04-12 13:58:44 +0900 | [diff] [blame] | 287 | Set<String> serviceIps = k8sServiceService.services().stream() |
| 288 | .map(s -> s.getSpec().getClusterIP()) |
| 289 | .collect(Collectors.toSet()); |
| 290 | if (serviceIps.contains(targetIp.toString())) { |
| 291 | replyMac = MacAddress.valueOf(SERVICE_FAKE_MAC_STR); |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | if (replyMac == null) { |
Jian Li | 140d8a2 | 2019-04-24 23:41:44 +0900 | [diff] [blame] | 296 | |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 297 | if (targetIp.toString().startsWith(NODE_IP_PREFIX)) { |
| 298 | String targetIpPrefix = targetIp.toString().split("\\.")[1]; |
| 299 | String nodePrefix = NODE_IP_PREFIX + "." + targetIpPrefix; |
Jian Li | 140d8a2 | 2019-04-24 23:41:44 +0900 | [diff] [blame] | 300 | |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 301 | String exBridgeCidr = k8sNodeService.completeNodes().stream() |
| 302 | .map(n -> n.extBridgeIp().toString()).findAny().orElse(null); |
Jian Li | 140d8a2 | 2019-04-24 23:41:44 +0900 | [diff] [blame] | 303 | |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 304 | if (exBridgeCidr != null) { |
| 305 | String extBridgeIp = unshiftIpDomain(targetIp.toString(), |
| 306 | nodePrefix, exBridgeCidr); |
| 307 | |
| 308 | replyMac = k8sNodeService.completeNodes().stream() |
| 309 | .filter(n -> extBridgeIp.equals(n.extBridgeIp().toString())) |
| 310 | .map(K8sNode::extBridgeMac).findAny().orElse(null); |
| 311 | |
| 312 | if (replyMac == null) { |
| 313 | replyMac = extHostMacStore.asJavaMap().get( |
| 314 | IpAddress.valueOf(extBridgeIp)); |
| 315 | } |
| 316 | |
| 317 | // if the source hosts are not in k8s cluster range, |
| 318 | // we need to manually learn their MAC addresses |
| 319 | if (replyMac == null) { |
| 320 | ConnectPoint cp = context.inPacket().receivedFrom(); |
| 321 | K8sNode k8sNode = k8sNodeService.node(cp.deviceId()); |
| 322 | |
| 323 | if (k8sNode != null) { |
| 324 | setArpRequest(k8sNode.extBridgeMac().toBytes(), |
| 325 | k8sNode.extBridgeIp().toOctets(), |
| 326 | IpAddress.valueOf(extBridgeIp).toOctets(), |
| 327 | k8sNode); |
| 328 | context.block(); |
| 329 | return; |
| 330 | } |
| 331 | } |
| 332 | } |
Jian Li | 140d8a2 | 2019-04-24 23:41:44 +0900 | [diff] [blame] | 333 | } |
| 334 | } |
| 335 | |
| 336 | if (replyMac == null) { |
Jian Li | eb488ea | 2019-04-16 01:50:02 +0900 | [diff] [blame] | 337 | replyMac = MacAddress.valueOf(gatewayMac); |
| 338 | } |
| 339 | |
| 340 | if (replyMac == null) { |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 341 | log.debug("Failed to find MAC address for {}", targetIp); |
| 342 | return; |
| 343 | } |
| 344 | |
| 345 | Ethernet ethReply = ARP.buildArpReply( |
| 346 | targetIp.getIp4Address(), |
| 347 | replyMac, |
| 348 | ethPacket); |
| 349 | |
| 350 | TrafficTreatment treatment = DefaultTrafficTreatment.builder() |
| 351 | .setOutput(context.inPacket().receivedFrom().port()) |
| 352 | .build(); |
| 353 | |
| 354 | packetService.emit(new DefaultOutboundPacket( |
| 355 | context.inPacket().receivedFrom().deviceId(), |
| 356 | treatment, |
| 357 | ByteBuffer.wrap(ethReply.serialize()))); |
Jian Li | 1b08d65 | 2019-05-02 17:28:09 +0900 | [diff] [blame] | 358 | |
| 359 | context.block(); |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 360 | } |
| 361 | |
Jian Li | 44c2b12 | 2019-05-03 14:46:34 +0900 | [diff] [blame] | 362 | private void processArpReply(PacketContext context, Ethernet ethPacket) { |
| 363 | ARP arpPacket = (ARP) ethPacket.getPayload(); |
| 364 | ConnectPoint cp = context.inPacket().receivedFrom(); |
| 365 | K8sNode k8sNode = k8sNodeService.node(cp.deviceId()); |
| 366 | |
| 367 | if (k8sNode != null && |
| 368 | ethPacket.getDestinationMAC().equals(k8sNode.extBridgeMac())) { |
| 369 | IpAddress srcIp = IpAddress.valueOf(IpAddress.Version.INET, |
| 370 | arpPacket.getSenderProtocolAddress()); |
| 371 | MacAddress srcMac = MacAddress.valueOf(arpPacket.getSenderHardwareAddress()); |
| 372 | |
| 373 | // we only add the host IP - MAC map store once, |
| 374 | // mutable MAP scenario is not considered for now |
| 375 | if (!extHostMacStore.containsKey(srcIp)) { |
| 376 | extHostMacStore.put(srcIp, srcMac); |
| 377 | } |
| 378 | } |
| 379 | } |
| 380 | |
| 381 | private void setArpRequest(byte[] senderMac, byte[] senderIp, |
| 382 | byte[] targetIp, K8sNode k8sNode) { |
| 383 | Ethernet ethRequest = ARP.buildArpRequest(senderMac, |
| 384 | senderIp, targetIp, VlanId.NO_VID); |
| 385 | |
| 386 | TrafficTreatment treatment = DefaultTrafficTreatment.builder() |
| 387 | .setOutput(k8sNode.intgToExtPatchPortNum()) |
| 388 | .build(); |
| 389 | |
| 390 | packetService.emit(new DefaultOutboundPacket( |
| 391 | k8sNode.intgBridge(), |
| 392 | treatment, |
| 393 | ByteBuffer.wrap(ethRequest.serialize()))); |
| 394 | } |
| 395 | |
Jian Li | 4aa1764 | 2019-01-30 00:01:11 +0900 | [diff] [blame] | 396 | private String getArpMode() { |
| 397 | Set<ConfigProperty> properties = configService.getProperties(this.getClass().getName()); |
| 398 | return getPropertyValue(properties, ARP_MODE); |
| 399 | } |
| 400 | |
| 401 | /** |
| 402 | * Extracts properties from the component configuration context. |
| 403 | * |
| 404 | * @param context the component context |
| 405 | */ |
| 406 | private void readComponentConfiguration(ComponentContext context) { |
| 407 | Dictionary<?, ?> properties = context.getProperties(); |
| 408 | |
| 409 | String updatedMac = Tools.get(properties, GATEWAY_MAC); |
| 410 | gatewayMac = updatedMac != null ? updatedMac : GATEWAY_MAC_DEFAULT; |
| 411 | log.info("Configured. Gateway MAC is {}", gatewayMac); |
| 412 | } |
| 413 | |
| 414 | /** |
| 415 | * An internal packet processor which processes ARP request, and results in |
| 416 | * packet-out ARP reply. |
| 417 | */ |
| 418 | private class InternalPacketProcessor implements PacketProcessor { |
| 419 | |
| 420 | @Override |
| 421 | public void process(PacketContext context) { |
| 422 | if (context.isHandled()) { |
| 423 | return; |
| 424 | } |
| 425 | |
| 426 | Ethernet ethPacket = context.inPacket().parsed(); |
| 427 | if (ethPacket == null || ethPacket.getEtherType() != Ethernet.TYPE_ARP) { |
| 428 | return; |
| 429 | } |
| 430 | |
| 431 | eventExecutor.execute(() -> processPacketIn(context, ethPacket)); |
| 432 | } |
| 433 | } |
| 434 | |
| 435 | /** |
| 436 | * An internal kubernetes node listener which is used for listening kubernetes |
| 437 | * node activity. As long as a node is in complete state, we will install |
| 438 | * default ARP rule to handle ARP request. |
| 439 | */ |
| 440 | private class InternalNodeEventListener implements K8sNodeListener { |
| 441 | |
| 442 | private boolean isRelevantHelper() { |
| 443 | return Objects.equals(localNodeId, leadershipService.getLeader(appId.name())); |
| 444 | } |
| 445 | |
| 446 | @Override |
| 447 | public void event(K8sNodeEvent event) { |
| 448 | K8sNode k8sNode = event.subject(); |
| 449 | switch (event.type()) { |
| 450 | case K8S_NODE_COMPLETE: |
| 451 | eventExecutor.execute(() -> processNodeCompletion(k8sNode)); |
| 452 | break; |
| 453 | case K8S_NODE_INCOMPLETE: |
| 454 | eventExecutor.execute(() -> processNodeIncompletion(k8sNode)); |
| 455 | break; |
| 456 | default: |
| 457 | break; |
| 458 | } |
| 459 | } |
| 460 | |
| 461 | private void processNodeCompletion(K8sNode node) { |
| 462 | if (!isRelevantHelper()) { |
| 463 | return; |
| 464 | } |
| 465 | |
| 466 | setDefaultArpRule(node, true); |
| 467 | } |
| 468 | |
| 469 | private void processNodeIncompletion(K8sNode node) { |
| 470 | if (!isRelevantHelper()) { |
| 471 | return; |
| 472 | } |
| 473 | |
| 474 | setDefaultArpRule(node, false); |
| 475 | } |
| 476 | |
| 477 | private void setDefaultArpRule(K8sNode node, boolean install) { |
| 478 | |
| 479 | if (getArpMode() == null) { |
| 480 | return; |
| 481 | } |
| 482 | |
| 483 | switch (getArpMode()) { |
| 484 | case ARP_PROXY_MODE: |
| 485 | setDefaultArpRuleForProxyMode(node, install); |
| 486 | break; |
| 487 | case ARP_BROADCAST_MODE: |
| 488 | // TODO: need to implement broadcast mode |
| 489 | log.warn("Not implemented yet."); |
| 490 | break; |
| 491 | default: |
| 492 | log.warn("Invalid ARP mode {}. Please use either " + |
| 493 | "broadcast or proxy mode.", getArpMode()); |
| 494 | break; |
| 495 | } |
| 496 | } |
| 497 | |
| 498 | private void setDefaultArpRuleForProxyMode(K8sNode node, boolean install) { |
| 499 | TrafficSelector selector = DefaultTrafficSelector.builder() |
| 500 | .matchEthType(EthType.EtherType.ARP.ethType().toShort()) |
| 501 | .build(); |
| 502 | |
| 503 | TrafficTreatment treatment = DefaultTrafficTreatment.builder() |
| 504 | .punt() |
| 505 | .build(); |
| 506 | |
| 507 | k8sFlowRuleService.setRule( |
| 508 | appId, |
| 509 | node.intgBridge(), |
| 510 | selector, |
| 511 | treatment, |
| 512 | PRIORITY_ARP_CONTROL_RULE, |
| 513 | ARP_TABLE, |
| 514 | install |
| 515 | ); |
| 516 | } |
| 517 | } |
| 518 | } |