Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 1 | /* |
Brian O'Connor | a09fe5b | 2017-08-03 21:12:30 -0700 | [diff] [blame] | 2 | * Copyright 2016-present Open Networking Foundation |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +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 | * |
| 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.openstacknetworking.impl; |
| 17 | |
| 18 | import org.apache.felix.scr.annotations.Activate; |
| 19 | import org.apache.felix.scr.annotations.Component; |
| 20 | import org.apache.felix.scr.annotations.Deactivate; |
| 21 | import org.apache.felix.scr.annotations.Reference; |
| 22 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
| 23 | import org.onlab.packet.Ethernet; |
| 24 | import org.onlab.packet.IPv4; |
| 25 | import org.onlab.packet.IpAddress; |
| 26 | import org.onlab.packet.IpPrefix; |
daniel park | b581710 | 2018-02-15 00:18:51 +0900 | [diff] [blame] | 27 | import org.onlab.packet.MacAddress; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 28 | import org.onlab.packet.TCP; |
| 29 | import org.onlab.packet.TpPort; |
| 30 | import org.onlab.packet.UDP; |
daniel park | ee8700b | 2017-05-11 15:50:03 +0900 | [diff] [blame] | 31 | import org.onlab.packet.VlanId; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 32 | import org.onlab.util.KryoNamespace; |
| 33 | import org.onosproject.core.ApplicationId; |
| 34 | import org.onosproject.core.CoreService; |
| 35 | import org.onosproject.net.DeviceId; |
| 36 | import org.onosproject.net.device.DeviceService; |
| 37 | import org.onosproject.net.flow.DefaultTrafficSelector; |
| 38 | import org.onosproject.net.flow.DefaultTrafficTreatment; |
| 39 | import org.onosproject.net.flow.TrafficSelector; |
| 40 | import org.onosproject.net.flow.TrafficTreatment; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 41 | import org.onosproject.net.packet.DefaultOutboundPacket; |
| 42 | import org.onosproject.net.packet.InboundPacket; |
| 43 | import org.onosproject.net.packet.PacketContext; |
| 44 | import org.onosproject.net.packet.PacketProcessor; |
| 45 | import org.onosproject.net.packet.PacketService; |
| 46 | import org.onosproject.openstacknetworking.api.InstancePort; |
| 47 | import org.onosproject.openstacknetworking.api.InstancePortService; |
sangho | dc37537 | 2017-06-08 10:41:30 +0900 | [diff] [blame] | 48 | import org.onosproject.openstacknetworking.api.OpenstackFlowRuleService; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 49 | import org.onosproject.openstacknetworking.api.OpenstackNetworkService; |
sangho | dc37537 | 2017-06-08 10:41:30 +0900 | [diff] [blame] | 50 | import org.onosproject.openstacknetworking.api.OpenstackRouterService; |
Hyunsun Moon | 0d45736 | 2017-06-27 17:19:41 +0900 | [diff] [blame] | 51 | import org.onosproject.openstacknode.api.OpenstackNode; |
| 52 | import org.onosproject.openstacknode.api.OpenstackNodeService; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 53 | import org.onosproject.store.serializers.KryoNamespaces; |
| 54 | import org.onosproject.store.service.ConsistentMap; |
daniel park | 0bc7fdb | 2017-03-13 14:20:08 +0900 | [diff] [blame] | 55 | import org.onosproject.store.service.DistributedSet; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 56 | import org.onosproject.store.service.Serializer; |
| 57 | import org.onosproject.store.service.StorageService; |
| 58 | import org.openstack4j.model.network.ExternalGateway; |
| 59 | import org.openstack4j.model.network.IP; |
| 60 | import org.openstack4j.model.network.Network; |
daniel park | ee8700b | 2017-05-11 15:50:03 +0900 | [diff] [blame] | 61 | import org.openstack4j.model.network.NetworkType; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 62 | import org.openstack4j.model.network.Port; |
| 63 | import org.openstack4j.model.network.Router; |
| 64 | import org.openstack4j.model.network.RouterInterface; |
| 65 | import org.openstack4j.model.network.Subnet; |
| 66 | import org.slf4j.Logger; |
| 67 | |
| 68 | import java.nio.ByteBuffer; |
| 69 | import java.util.Objects; |
Hyunsun Moon | 0d45736 | 2017-06-27 17:19:41 +0900 | [diff] [blame] | 70 | import java.util.Set; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 71 | import java.util.concurrent.ExecutorService; |
Hyunsun Moon | 0d45736 | 2017-06-27 17:19:41 +0900 | [diff] [blame] | 72 | import java.util.stream.Collectors; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 73 | |
| 74 | import static java.util.concurrent.Executors.newSingleThreadExecutor; |
| 75 | import static org.onlab.util.Tools.groupedThreads; |
daniel park | eeb8e04 | 2018-02-21 14:06:58 +0900 | [diff] [blame] | 76 | import static org.onosproject.openstacknetworking.api.Constants.DEFAULT_GATEWAY_MAC; |
| 77 | import static org.onosproject.openstacknetworking.api.Constants.GW_COMMON_TABLE; |
| 78 | import static org.onosproject.openstacknetworking.api.Constants.OPENSTACK_NETWORKING_APP_ID; |
| 79 | import static org.onosproject.openstacknetworking.api.Constants.PRIORITY_SNAT_RULE; |
Hyunsun Moon | 0d45736 | 2017-06-27 17:19:41 +0900 | [diff] [blame] | 80 | import static org.onosproject.openstacknode.api.OpenstackNode.NodeType.GATEWAY; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 81 | import static org.slf4j.LoggerFactory.getLogger; |
| 82 | |
| 83 | /** |
| 84 | * Handle packets needs SNAT. |
| 85 | */ |
| 86 | @Component(immediate = true) |
| 87 | public class OpenstackRoutingSnatHandler { |
| 88 | |
| 89 | private final Logger log = getLogger(getClass()); |
| 90 | |
| 91 | private static final String ERR_PACKETIN = "Failed to handle packet in: "; |
daniel park | ee8700b | 2017-05-11 15:50:03 +0900 | [diff] [blame] | 92 | private static final String ERR_UNSUPPORTED_NET_TYPE = "Unsupported network type"; |
Ray Milkey | 3717e60 | 2018-02-01 13:49:47 -0800 | [diff] [blame] | 93 | private static final long TIME_OUT_SNAT_PORT_MS = 120L * 1000L; |
sangho | 79d6a83 | 2017-05-02 14:53:46 +0900 | [diff] [blame] | 94 | private static final int TP_PORT_MINIMUM_NUM = 65000; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 95 | private static final int TP_PORT_MAXIMUM_NUM = 65535; |
| 96 | |
| 97 | private static final KryoNamespace.Builder NUMBER_SERIALIZER = KryoNamespace.newBuilder() |
| 98 | .register(KryoNamespaces.API); |
| 99 | |
| 100 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 101 | protected CoreService coreService; |
| 102 | |
| 103 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 104 | protected PacketService packetService; |
| 105 | |
| 106 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 107 | protected StorageService storageService; |
| 108 | |
| 109 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 110 | protected DeviceService deviceService; |
| 111 | |
| 112 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 113 | protected InstancePortService instancePortService; |
| 114 | |
| 115 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 116 | protected OpenstackNodeService osNodeService; |
| 117 | |
| 118 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 119 | protected OpenstackNetworkService osNetworkService; |
| 120 | |
| 121 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 122 | protected OpenstackRouterService osRouterService; |
| 123 | |
sangho | dc37537 | 2017-06-08 10:41:30 +0900 | [diff] [blame] | 124 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 125 | protected OpenstackFlowRuleService osFlowRuleService; |
| 126 | |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 127 | private final ExecutorService eventExecutor = newSingleThreadExecutor( |
| 128 | groupedThreads(this.getClass().getSimpleName(), "event-handler", log)); |
Hyunsun Moon | 0d45736 | 2017-06-27 17:19:41 +0900 | [diff] [blame] | 129 | private final PacketProcessor packetProcessor = new InternalPacketProcessor(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 130 | |
daniel park | 0bc7fdb | 2017-03-13 14:20:08 +0900 | [diff] [blame] | 131 | private ConsistentMap<Integer, Long> allocatedPortNumMap; |
| 132 | private DistributedSet<Integer> unUsedPortNumSet; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 133 | private ApplicationId appId; |
| 134 | |
| 135 | @Activate |
| 136 | protected void activate() { |
| 137 | appId = coreService.registerApplication(OPENSTACK_NETWORKING_APP_ID); |
daniel park | 0bc7fdb | 2017-03-13 14:20:08 +0900 | [diff] [blame] | 138 | |
| 139 | allocatedPortNumMap = storageService.<Integer, Long>consistentMapBuilder() |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 140 | .withSerializer(Serializer.using(NUMBER_SERIALIZER.build())) |
daniel park | 0bc7fdb | 2017-03-13 14:20:08 +0900 | [diff] [blame] | 141 | .withName("openstackrouting-allocatedportnummap") |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 142 | .withApplicationId(appId) |
| 143 | .build(); |
| 144 | |
daniel park | 0bc7fdb | 2017-03-13 14:20:08 +0900 | [diff] [blame] | 145 | unUsedPortNumSet = storageService.<Integer>setBuilder() |
| 146 | .withName("openstackrouting-unusedportnumset") |
| 147 | .withSerializer(Serializer.using(KryoNamespaces.API)) |
| 148 | .build() |
| 149 | .asDistributedSet(); |
| 150 | |
| 151 | initializeUnusedPortNumSet(); |
| 152 | |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 153 | packetService.addProcessor(packetProcessor, PacketProcessor.director(1)); |
| 154 | log.info("Started"); |
| 155 | } |
| 156 | |
daniel park | 0bc7fdb | 2017-03-13 14:20:08 +0900 | [diff] [blame] | 157 | private void initializeUnusedPortNumSet() { |
| 158 | for (int i = TP_PORT_MINIMUM_NUM; i < TP_PORT_MAXIMUM_NUM; i++) { |
Hyunsun Moon | 0e058f2 | 2017-04-19 17:00:52 +0900 | [diff] [blame] | 159 | if (!allocatedPortNumMap.containsKey(i)) { |
| 160 | unUsedPortNumSet.add(i); |
daniel park | 0bc7fdb | 2017-03-13 14:20:08 +0900 | [diff] [blame] | 161 | } |
| 162 | } |
| 163 | |
| 164 | clearPortNumMap(); |
| 165 | } |
| 166 | |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 167 | @Deactivate |
| 168 | protected void deactivate() { |
| 169 | packetService.removeProcessor(packetProcessor); |
| 170 | eventExecutor.shutdown(); |
| 171 | log.info("Stopped"); |
| 172 | } |
| 173 | |
| 174 | private void processSnatPacket(PacketContext context, Ethernet eth) { |
| 175 | IPv4 iPacket = (IPv4) eth.getPayload(); |
| 176 | InboundPacket packetIn = context.inPacket(); |
| 177 | |
Hyunsun Moon | 0e058f2 | 2017-04-19 17:00:52 +0900 | [diff] [blame] | 178 | int patPort = getPortNum(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 179 | |
| 180 | InstancePort srcInstPort = instancePortService.instancePort(eth.getSourceMAC()); |
| 181 | if (srcInstPort == null) { |
Hyunsun Moon | 0e058f2 | 2017-04-19 17:00:52 +0900 | [diff] [blame] | 182 | log.error(ERR_PACKETIN + "source host(MAC:{}) does not exist", |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 183 | eth.getSourceMAC()); |
| 184 | return; |
| 185 | } |
Hyunsun Moon | 0e058f2 | 2017-04-19 17:00:52 +0900 | [diff] [blame] | 186 | |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 187 | IpAddress srcIp = IpAddress.valueOf(iPacket.getSourceAddress()); |
| 188 | Subnet srcSubnet = getSourceSubnet(srcInstPort, srcIp); |
| 189 | IpAddress externalGatewayIp = getExternalIp(srcSubnet); |
daniel park | b581710 | 2018-02-15 00:18:51 +0900 | [diff] [blame] | 190 | |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 191 | if (externalGatewayIp == null) { |
| 192 | return; |
| 193 | } |
| 194 | |
daniel park | eeb8e04 | 2018-02-21 14:06:58 +0900 | [diff] [blame] | 195 | MacAddress externalPeerRouterMac = externalPeerRouterMac(srcSubnet); |
daniel park | b581710 | 2018-02-15 00:18:51 +0900 | [diff] [blame] | 196 | if (externalPeerRouterMac == null) { |
| 197 | return; |
| 198 | } |
| 199 | |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 200 | populateSnatFlowRules(context.inPacket(), |
| 201 | srcInstPort, |
| 202 | TpPort.tpPort(patPort), |
daniel park | b581710 | 2018-02-15 00:18:51 +0900 | [diff] [blame] | 203 | externalGatewayIp, externalPeerRouterMac); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 204 | |
Ray Milkey | f0c4761 | 2017-09-28 11:29:38 -0700 | [diff] [blame] | 205 | packetOut(eth.duplicate(), |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 206 | packetIn.receivedFrom().deviceId(), |
| 207 | patPort, |
daniel park | b581710 | 2018-02-15 00:18:51 +0900 | [diff] [blame] | 208 | externalGatewayIp, externalPeerRouterMac); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 209 | } |
| 210 | |
daniel park | eeb8e04 | 2018-02-21 14:06:58 +0900 | [diff] [blame] | 211 | private MacAddress externalPeerRouterMac(Subnet subnet) { |
| 212 | RouterInterface osRouterIface = osRouterService.routerInterfaces().stream() |
| 213 | .filter(i -> Objects.equals(i.getSubnetId(), subnet.getId())) |
| 214 | .findAny().orElse(null); |
| 215 | if (osRouterIface == null) { |
| 216 | return null; |
| 217 | } |
| 218 | |
| 219 | Router osRouter = osRouterService.router(osRouterIface.getId()); |
| 220 | if (osRouter == null) { |
| 221 | return null; |
| 222 | } |
| 223 | if (osRouter.getExternalGatewayInfo() == null) { |
| 224 | return null; |
| 225 | } |
| 226 | |
| 227 | ExternalGateway exGatewayInfo = osRouter.getExternalGatewayInfo(); |
| 228 | |
| 229 | return osNetworkService.externalPeerRouterMac(exGatewayInfo); |
| 230 | } |
| 231 | |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 232 | private Subnet getSourceSubnet(InstancePort instance, IpAddress srcIp) { |
| 233 | Port osPort = osNetworkService.port(instance.portId()); |
| 234 | IP fixedIp = osPort.getFixedIps().stream() |
| 235 | .filter(ip -> IpAddress.valueOf(ip.getIpAddress()).equals(srcIp)) |
| 236 | .findAny().orElse(null); |
| 237 | if (fixedIp == null) { |
| 238 | return null; |
| 239 | } |
| 240 | return osNetworkService.subnet(fixedIp.getSubnetId()); |
| 241 | } |
| 242 | |
| 243 | private IpAddress getExternalIp(Subnet srcSubnet) { |
| 244 | RouterInterface osRouterIface = osRouterService.routerInterfaces().stream() |
| 245 | .filter(i -> Objects.equals(i.getSubnetId(), srcSubnet.getId())) |
| 246 | .findAny().orElse(null); |
| 247 | if (osRouterIface == null) { |
| 248 | // this subnet is not connected to the router |
| 249 | log.trace(ERR_PACKETIN + "source subnet(ID:{}, CIDR:{}) has no router", |
| 250 | srcSubnet.getId(), srcSubnet.getCidr()); |
| 251 | return null; |
| 252 | } |
| 253 | |
| 254 | Router osRouter = osRouterService.router(osRouterIface.getId()); |
| 255 | if (osRouter.getExternalGatewayInfo() == null) { |
| 256 | // this router does not have external connectivity |
| 257 | log.trace(ERR_PACKETIN + "router({}) has no external gateway", |
| 258 | osRouter.getName()); |
| 259 | return null; |
| 260 | } |
| 261 | |
| 262 | ExternalGateway exGatewayInfo = osRouter.getExternalGatewayInfo(); |
| 263 | if (!exGatewayInfo.isEnableSnat()) { |
| 264 | // SNAT is disabled in this router |
| 265 | log.trace(ERR_PACKETIN + "router({}) SNAT is disabled", osRouter.getName()); |
| 266 | return null; |
| 267 | } |
| 268 | |
| 269 | // TODO fix openstack4j for ExternalGateway provides external fixed IP list |
| 270 | Port exGatewayPort = osNetworkService.ports(exGatewayInfo.getNetworkId()) |
| 271 | .stream() |
| 272 | .filter(port -> Objects.equals(port.getDeviceId(), osRouter.getId())) |
| 273 | .findAny().orElse(null); |
| 274 | if (exGatewayPort == null) { |
| 275 | log.trace(ERR_PACKETIN + "no external gateway port for router({})", |
| 276 | osRouter.getName()); |
| 277 | return null; |
| 278 | } |
| 279 | |
| 280 | return IpAddress.valueOf(exGatewayPort.getFixedIps().stream() |
| 281 | .findFirst().get().getIpAddress()); |
| 282 | } |
| 283 | |
| 284 | private void populateSnatFlowRules(InboundPacket packetIn, InstancePort srcInstPort, |
daniel park | b581710 | 2018-02-15 00:18:51 +0900 | [diff] [blame] | 285 | TpPort patPort, IpAddress externalIp, MacAddress externalPeerRouterMac) { |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 286 | Network osNet = osNetworkService.network(srcInstPort.networkId()); |
| 287 | if (osNet == null) { |
| 288 | final String error = String.format(ERR_PACKETIN + "network %s not found", |
| 289 | srcInstPort.networkId()); |
| 290 | throw new IllegalStateException(error); |
| 291 | } |
| 292 | |
| 293 | setDownstreamRules(srcInstPort, |
daniel park | ee8700b | 2017-05-11 15:50:03 +0900 | [diff] [blame] | 294 | osNet.getProviderSegID(), |
| 295 | osNet.getNetworkType(), |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 296 | externalIp, |
| 297 | patPort, |
| 298 | packetIn); |
| 299 | |
daniel park | ee8700b | 2017-05-11 15:50:03 +0900 | [diff] [blame] | 300 | setUpstreamRules(osNet.getProviderSegID(), |
| 301 | osNet.getNetworkType(), |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 302 | externalIp, |
daniel park | b581710 | 2018-02-15 00:18:51 +0900 | [diff] [blame] | 303 | externalPeerRouterMac, |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 304 | patPort, |
| 305 | packetIn); |
| 306 | } |
| 307 | |
Hyunsun Moon | 0d45736 | 2017-06-27 17:19:41 +0900 | [diff] [blame] | 308 | private void setDownstreamRules(InstancePort srcInstPort, String segmentId, |
| 309 | NetworkType networkType, |
daniel park | b581710 | 2018-02-15 00:18:51 +0900 | [diff] [blame] | 310 | IpAddress externalIp, |
| 311 | TpPort patPort, |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 312 | InboundPacket packetIn) { |
| 313 | IPv4 iPacket = (IPv4) packetIn.parsed().getPayload(); |
| 314 | IpAddress internalIp = IpAddress.valueOf(iPacket.getSourceAddress()); |
| 315 | |
| 316 | TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder() |
| 317 | .matchEthType(Ethernet.TYPE_IPV4) |
| 318 | .matchIPProtocol(iPacket.getProtocol()) |
Hyunsun Moon | 0d45736 | 2017-06-27 17:19:41 +0900 | [diff] [blame] | 319 | .matchIPDst(IpPrefix.valueOf(externalIp.getIp4Address(), 32)) |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 320 | .matchIPSrc(IpPrefix.valueOf(iPacket.getDestinationAddress(), 32)); |
| 321 | |
| 322 | TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder() |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 323 | .setEthDst(packetIn.parsed().getSourceMAC()) |
| 324 | .setIpDst(internalIp); |
| 325 | |
daniel park | ee8700b | 2017-05-11 15:50:03 +0900 | [diff] [blame] | 326 | switch (networkType) { |
| 327 | case VXLAN: |
| 328 | tBuilder.setTunnelId(Long.parseLong(segmentId)); |
| 329 | break; |
| 330 | case VLAN: |
| 331 | tBuilder.pushVlan() |
| 332 | .setVlanId(VlanId.vlanId(segmentId)) |
| 333 | .setEthSrc(DEFAULT_GATEWAY_MAC); |
| 334 | break; |
| 335 | default: |
| 336 | final String error = String.format( |
| 337 | ERR_UNSUPPORTED_NET_TYPE + "%s", |
| 338 | networkType.toString()); |
| 339 | throw new IllegalStateException(error); |
| 340 | } |
| 341 | |
| 342 | |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 343 | switch (iPacket.getProtocol()) { |
| 344 | case IPv4.PROTOCOL_TCP: |
| 345 | TCP tcpPacket = (TCP) iPacket.getPayload(); |
| 346 | sBuilder.matchTcpSrc(TpPort.tpPort(tcpPacket.getDestinationPort())) |
| 347 | .matchTcpDst(patPort); |
| 348 | tBuilder.setTcpDst(TpPort.tpPort(tcpPacket.getSourcePort())); |
| 349 | break; |
| 350 | case IPv4.PROTOCOL_UDP: |
| 351 | UDP udpPacket = (UDP) iPacket.getPayload(); |
| 352 | sBuilder.matchUdpSrc(TpPort.tpPort(udpPacket.getDestinationPort())) |
| 353 | .matchUdpDst(patPort); |
| 354 | tBuilder.setUdpDst(TpPort.tpPort(udpPacket.getSourcePort())); |
| 355 | break; |
| 356 | default: |
| 357 | break; |
| 358 | } |
| 359 | |
Hyunsun Moon | 0d45736 | 2017-06-27 17:19:41 +0900 | [diff] [blame] | 360 | OpenstackNode srcNode = osNodeService.node(srcInstPort.deviceId()); |
| 361 | osNodeService.completeNodes(GATEWAY).forEach(gNode -> { |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 362 | TrafficTreatment.Builder tmpBuilder = |
| 363 | DefaultTrafficTreatment.builder(tBuilder.build()); |
daniel park | ee8700b | 2017-05-11 15:50:03 +0900 | [diff] [blame] | 364 | switch (networkType) { |
| 365 | case VXLAN: |
| 366 | tmpBuilder.extension(RulePopulatorUtil.buildExtension( |
| 367 | deviceService, |
Hyunsun Moon | 0d45736 | 2017-06-27 17:19:41 +0900 | [diff] [blame] | 368 | gNode.intgBridge(), |
| 369 | srcNode.dataIp().getIp4Address()), gNode.intgBridge()) |
| 370 | .setOutput(gNode.tunnelPortNum()); |
daniel park | ee8700b | 2017-05-11 15:50:03 +0900 | [diff] [blame] | 371 | break; |
| 372 | case VLAN: |
Hyunsun Moon | 0d45736 | 2017-06-27 17:19:41 +0900 | [diff] [blame] | 373 | tmpBuilder.setOutput(gNode.vlanPortNum()); |
daniel park | ee8700b | 2017-05-11 15:50:03 +0900 | [diff] [blame] | 374 | break; |
| 375 | default: |
Hyunsun Moon | 0d45736 | 2017-06-27 17:19:41 +0900 | [diff] [blame] | 376 | final String error = String.format(ERR_UNSUPPORTED_NET_TYPE + "%s", |
daniel park | ee8700b | 2017-05-11 15:50:03 +0900 | [diff] [blame] | 377 | networkType.toString()); |
| 378 | throw new IllegalStateException(error); |
| 379 | } |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 380 | |
sangho | dc37537 | 2017-06-08 10:41:30 +0900 | [diff] [blame] | 381 | osFlowRuleService.setRule( |
| 382 | appId, |
Hyunsun Moon | 0d45736 | 2017-06-27 17:19:41 +0900 | [diff] [blame] | 383 | gNode.intgBridge(), |
sangho | dc37537 | 2017-06-08 10:41:30 +0900 | [diff] [blame] | 384 | sBuilder.build(), |
| 385 | tmpBuilder.build(), |
| 386 | PRIORITY_SNAT_RULE, |
| 387 | GW_COMMON_TABLE, |
| 388 | true); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 389 | }); |
| 390 | } |
| 391 | |
Hyunsun Moon | 0d45736 | 2017-06-27 17:19:41 +0900 | [diff] [blame] | 392 | private void setUpstreamRules(String segmentId, NetworkType networkType, |
daniel park | b581710 | 2018-02-15 00:18:51 +0900 | [diff] [blame] | 393 | IpAddress externalIp, MacAddress externalPeerRouterMac, |
| 394 | TpPort patPort, |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 395 | InboundPacket packetIn) { |
| 396 | IPv4 iPacket = (IPv4) packetIn.parsed().getPayload(); |
daniel park | ee8700b | 2017-05-11 15:50:03 +0900 | [diff] [blame] | 397 | |
| 398 | TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder() |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 399 | .matchEthType(Ethernet.TYPE_IPV4) |
| 400 | .matchIPProtocol(iPacket.getProtocol()) |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 401 | .matchIPSrc(IpPrefix.valueOf(iPacket.getSourceAddress(), 32)) |
| 402 | .matchIPDst(IpPrefix.valueOf(iPacket.getDestinationAddress(), 32)); |
| 403 | |
| 404 | TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder(); |
daniel park | ee8700b | 2017-05-11 15:50:03 +0900 | [diff] [blame] | 405 | |
| 406 | switch (networkType) { |
| 407 | case VXLAN: |
| 408 | sBuilder.matchTunnelId(Long.parseLong(segmentId)); |
| 409 | break; |
| 410 | case VLAN: |
| 411 | sBuilder.matchVlanId(VlanId.vlanId(segmentId)); |
| 412 | tBuilder.popVlan(); |
| 413 | break; |
| 414 | default: |
Hyunsun Moon | 0d45736 | 2017-06-27 17:19:41 +0900 | [diff] [blame] | 415 | final String error = String.format(ERR_UNSUPPORTED_NET_TYPE + "%s", |
daniel park | ee8700b | 2017-05-11 15:50:03 +0900 | [diff] [blame] | 416 | networkType.toString()); |
| 417 | throw new IllegalStateException(error); |
| 418 | } |
| 419 | |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 420 | switch (iPacket.getProtocol()) { |
| 421 | case IPv4.PROTOCOL_TCP: |
| 422 | TCP tcpPacket = (TCP) iPacket.getPayload(); |
| 423 | sBuilder.matchTcpSrc(TpPort.tpPort(tcpPacket.getSourcePort())) |
| 424 | .matchTcpDst(TpPort.tpPort(tcpPacket.getDestinationPort())); |
| 425 | tBuilder.setTcpSrc(patPort) |
daniel park | b581710 | 2018-02-15 00:18:51 +0900 | [diff] [blame] | 426 | .setEthDst(externalPeerRouterMac); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 427 | break; |
| 428 | case IPv4.PROTOCOL_UDP: |
| 429 | UDP udpPacket = (UDP) iPacket.getPayload(); |
| 430 | sBuilder.matchUdpSrc(TpPort.tpPort(udpPacket.getSourcePort())) |
| 431 | .matchUdpDst(TpPort.tpPort(udpPacket.getDestinationPort())); |
| 432 | tBuilder.setUdpSrc(patPort) |
daniel park | b581710 | 2018-02-15 00:18:51 +0900 | [diff] [blame] | 433 | .setEthDst(externalPeerRouterMac); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 434 | break; |
| 435 | default: |
| 436 | log.debug("Unsupported IPv4 protocol {}"); |
| 437 | break; |
| 438 | } |
| 439 | |
| 440 | tBuilder.setIpSrc(externalIp); |
Hyunsun Moon | 0d45736 | 2017-06-27 17:19:41 +0900 | [diff] [blame] | 441 | osNodeService.completeNodes(GATEWAY).forEach(gNode -> { |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 442 | TrafficTreatment.Builder tmpBuilder = |
| 443 | DefaultTrafficTreatment.builder(tBuilder.build()); |
daniel park | b581710 | 2018-02-15 00:18:51 +0900 | [diff] [blame] | 444 | tmpBuilder.setOutput(gNode.uplinkPortNum()); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 445 | |
sangho | dc37537 | 2017-06-08 10:41:30 +0900 | [diff] [blame] | 446 | osFlowRuleService.setRule( |
| 447 | appId, |
Hyunsun Moon | 0d45736 | 2017-06-27 17:19:41 +0900 | [diff] [blame] | 448 | gNode.intgBridge(), |
sangho | dc37537 | 2017-06-08 10:41:30 +0900 | [diff] [blame] | 449 | sBuilder.build(), |
| 450 | tmpBuilder.build(), |
| 451 | PRIORITY_SNAT_RULE, |
| 452 | GW_COMMON_TABLE, |
| 453 | true); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 454 | }); |
| 455 | } |
| 456 | |
| 457 | private void packetOut(Ethernet ethPacketIn, DeviceId srcDevice, int patPort, |
daniel park | b581710 | 2018-02-15 00:18:51 +0900 | [diff] [blame] | 458 | IpAddress externalIp, MacAddress externalPeerRouterMac) { |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 459 | IPv4 iPacket = (IPv4) ethPacketIn.getPayload(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 460 | switch (iPacket.getProtocol()) { |
| 461 | case IPv4.PROTOCOL_TCP: |
| 462 | TCP tcpPacket = (TCP) iPacket.getPayload(); |
| 463 | tcpPacket.setSourcePort(patPort); |
| 464 | tcpPacket.resetChecksum(); |
| 465 | tcpPacket.setParent(iPacket); |
| 466 | iPacket.setPayload(tcpPacket); |
| 467 | break; |
| 468 | case IPv4.PROTOCOL_UDP: |
| 469 | UDP udpPacket = (UDP) iPacket.getPayload(); |
| 470 | udpPacket.setSourcePort(patPort); |
| 471 | udpPacket.resetChecksum(); |
| 472 | udpPacket.setParent(iPacket); |
| 473 | iPacket.setPayload(udpPacket); |
| 474 | break; |
| 475 | default: |
| 476 | log.trace("Temporally, this method can process UDP and TCP protocol."); |
| 477 | return; |
| 478 | } |
| 479 | |
| 480 | iPacket.setSourceAddress(externalIp.toString()); |
| 481 | iPacket.resetChecksum(); |
| 482 | iPacket.setParent(ethPacketIn); |
daniel park | b581710 | 2018-02-15 00:18:51 +0900 | [diff] [blame] | 483 | ethPacketIn.setDestinationMACAddress(externalPeerRouterMac); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 484 | ethPacketIn.setPayload(iPacket); |
daniel park | ee8700b | 2017-05-11 15:50:03 +0900 | [diff] [blame] | 485 | ethPacketIn.resetChecksum(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 486 | |
Hyunsun Moon | 0d45736 | 2017-06-27 17:19:41 +0900 | [diff] [blame] | 487 | OpenstackNode srcNode = osNodeService.node(srcDevice); |
| 488 | if (srcNode == null) { |
| 489 | final String error = String.format("Cannot find openstack node for %s", |
| 490 | srcDevice); |
| 491 | throw new IllegalStateException(error); |
| 492 | } |
daniel park | ee8700b | 2017-05-11 15:50:03 +0900 | [diff] [blame] | 493 | |
Hyunsun Moon | 0d45736 | 2017-06-27 17:19:41 +0900 | [diff] [blame] | 494 | TrafficTreatment treatment = DefaultTrafficTreatment.builder() |
daniel park | b581710 | 2018-02-15 00:18:51 +0900 | [diff] [blame] | 495 | .setOutput(srcNode.uplinkPortNum()).build(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 496 | packetService.emit(new DefaultOutboundPacket( |
| 497 | srcDevice, |
| 498 | treatment, |
| 499 | ByteBuffer.wrap(ethPacketIn.serialize()))); |
| 500 | } |
| 501 | |
Hyunsun Moon | 0e058f2 | 2017-04-19 17:00:52 +0900 | [diff] [blame] | 502 | private int getPortNum() { |
daniel park | 0bc7fdb | 2017-03-13 14:20:08 +0900 | [diff] [blame] | 503 | if (unUsedPortNumSet.isEmpty()) { |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 504 | clearPortNumMap(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 505 | } |
daniel park | 0bc7fdb | 2017-03-13 14:20:08 +0900 | [diff] [blame] | 506 | int portNum = findUnusedPortNum(); |
daniel park | 0bc7fdb | 2017-03-13 14:20:08 +0900 | [diff] [blame] | 507 | if (portNum != 0) { |
Hyunsun Moon | 0e058f2 | 2017-04-19 17:00:52 +0900 | [diff] [blame] | 508 | unUsedPortNumSet.remove(portNum); |
| 509 | allocatedPortNumMap.put(portNum, System.currentTimeMillis()); |
daniel park | 0bc7fdb | 2017-03-13 14:20:08 +0900 | [diff] [blame] | 510 | } |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 511 | return portNum; |
| 512 | } |
| 513 | |
| 514 | private int findUnusedPortNum() { |
Hyunsun Moon | 0e058f2 | 2017-04-19 17:00:52 +0900 | [diff] [blame] | 515 | return unUsedPortNumSet.stream().findAny().orElse(0); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 516 | } |
| 517 | |
| 518 | private void clearPortNumMap() { |
daniel park | 0bc7fdb | 2017-03-13 14:20:08 +0900 | [diff] [blame] | 519 | allocatedPortNumMap.entrySet().forEach(e -> { |
Hyunsun Moon | 0e058f2 | 2017-04-19 17:00:52 +0900 | [diff] [blame] | 520 | if (System.currentTimeMillis() - e.getValue().value() > TIME_OUT_SNAT_PORT_MS) { |
daniel park | 0bc7fdb | 2017-03-13 14:20:08 +0900 | [diff] [blame] | 521 | allocatedPortNumMap.remove(e.getKey()); |
| 522 | unUsedPortNumSet.add(e.getKey()); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 523 | } |
| 524 | }); |
| 525 | } |
| 526 | |
| 527 | private class InternalPacketProcessor implements PacketProcessor { |
| 528 | |
| 529 | @Override |
| 530 | public void process(PacketContext context) { |
Hyunsun Moon | 0d45736 | 2017-06-27 17:19:41 +0900 | [diff] [blame] | 531 | Set<DeviceId> gateways = osNodeService.completeNodes(OpenstackNode.NodeType.GATEWAY) |
| 532 | .stream().map(OpenstackNode::intgBridge) |
| 533 | .collect(Collectors.toSet()); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 534 | if (context.isHandled()) { |
| 535 | return; |
Hyunsun Moon | 0d45736 | 2017-06-27 17:19:41 +0900 | [diff] [blame] | 536 | } else if (!gateways.contains(context.inPacket().receivedFrom().deviceId())) { |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 537 | // return if the packet is not from gateway nodes |
| 538 | return; |
| 539 | } |
| 540 | |
| 541 | InboundPacket pkt = context.inPacket(); |
| 542 | Ethernet eth = pkt.parsed(); |
| 543 | if (eth == null || eth.getEtherType() == Ethernet.TYPE_ARP) { |
| 544 | return; |
| 545 | } |
| 546 | |
| 547 | IPv4 iPacket = (IPv4) eth.getPayload(); |
| 548 | switch (iPacket.getProtocol()) { |
| 549 | case IPv4.PROTOCOL_ICMP: |
| 550 | break; |
| 551 | case IPv4.PROTOCOL_UDP: |
| 552 | UDP udpPacket = (UDP) iPacket.getPayload(); |
| 553 | if (udpPacket.getDestinationPort() == UDP.DHCP_SERVER_PORT && |
| 554 | udpPacket.getSourcePort() == UDP.DHCP_CLIENT_PORT) { |
| 555 | // don't process DHCP |
| 556 | break; |
| 557 | } |
| 558 | default: |
| 559 | eventExecutor.execute(() -> processSnatPacket(context, eth)); |
| 560 | break; |
| 561 | } |
| 562 | } |
| 563 | } |
| 564 | } |