Kalhee Kim | ba36606 | 2017-11-07 16:32:09 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2017-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 | |
| 17 | package org.onosproject.routing.fpm; |
| 18 | |
| 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.Modified; |
| 23 | import org.apache.felix.scr.annotations.Property; |
| 24 | import org.apache.felix.scr.annotations.Reference; |
| 25 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
| 26 | import org.apache.felix.scr.annotations.ReferencePolicy; |
| 27 | import org.apache.felix.scr.annotations.Service; |
| 28 | import org.jboss.netty.bootstrap.ServerBootstrap; |
| 29 | import org.jboss.netty.channel.Channel; |
| 30 | import org.jboss.netty.channel.ChannelException; |
| 31 | import org.jboss.netty.channel.ChannelFactory; |
| 32 | import org.jboss.netty.channel.ChannelPipeline; |
| 33 | import org.jboss.netty.channel.ChannelPipelineFactory; |
| 34 | import org.jboss.netty.channel.Channels; |
| 35 | import org.jboss.netty.channel.group.ChannelGroup; |
| 36 | import org.jboss.netty.channel.group.DefaultChannelGroup; |
| 37 | import org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory; |
| 38 | import org.jboss.netty.handler.timeout.IdleStateHandler; |
| 39 | import org.jboss.netty.util.HashedWheelTimer; |
| 40 | import org.onlab.packet.IpAddress; |
| 41 | import org.onlab.packet.Ip4Address; |
| 42 | import org.onlab.packet.Ip6Address; |
| 43 | import org.onlab.packet.IpPrefix; |
| 44 | import org.onosproject.net.intf.Interface; |
| 45 | import org.onosproject.net.host.InterfaceIpAddress; |
| 46 | import org.onosproject.net.intf.InterfaceService; |
| 47 | import org.onlab.util.KryoNamespace; |
| 48 | import org.onlab.util.Tools; |
| 49 | import org.onosproject.cfg.ComponentConfigService; |
| 50 | import org.onosproject.cluster.ClusterService; |
| 51 | import org.onosproject.cluster.NodeId; |
| 52 | import org.onosproject.core.CoreService; |
| 53 | import org.onosproject.core.ApplicationId; |
| 54 | import org.onosproject.routeservice.Route; |
| 55 | import org.onosproject.routeservice.RouteAdminService; |
| 56 | import org.onosproject.routing.fpm.protocol.FpmHeader; |
| 57 | import org.onosproject.routing.fpm.protocol.Netlink; |
| 58 | import org.onosproject.routing.fpm.protocol.NetlinkMessageType; |
| 59 | import org.onosproject.routing.fpm.protocol.RouteAttribute; |
| 60 | import org.onosproject.routing.fpm.protocol.RouteAttributeDst; |
| 61 | import org.onosproject.routing.fpm.protocol.RouteAttributeGateway; |
| 62 | import org.onosproject.routing.fpm.protocol.RtNetlink; |
| 63 | import org.onosproject.routing.fpm.protocol.RtProtocol; |
| 64 | import org.onosproject.store.serializers.KryoNamespaces; |
| 65 | import org.onosproject.store.service.ConsistentMap; |
| 66 | import org.onosproject.store.service.Serializer; |
| 67 | import org.onosproject.store.service.StorageService; |
| 68 | import org.onosproject.store.StoreDelegate; |
| 69 | import org.osgi.service.component.ComponentContext; |
| 70 | import org.slf4j.Logger; |
| 71 | import org.slf4j.LoggerFactory; |
| 72 | |
| 73 | import java.net.InetSocketAddress; |
| 74 | import java.util.ArrayList; |
| 75 | import java.util.Collection; |
| 76 | import java.util.Collections; |
| 77 | import java.util.Dictionary; |
| 78 | import java.util.HashSet; |
| 79 | import java.util.LinkedList; |
| 80 | |
| 81 | import java.util.List; |
| 82 | import java.util.Map; |
| 83 | import java.util.Set; |
| 84 | import java.util.concurrent.ConcurrentHashMap; |
| 85 | import java.util.stream.Collectors; |
| 86 | |
| 87 | import static java.util.concurrent.Executors.newCachedThreadPool; |
| 88 | import static org.onlab.util.Tools.groupedThreads; |
| 89 | import org.onosproject.routing.fpm.api.FpmPrefixStoreEvent; |
| 90 | import org.onosproject.routing.fpm.api.FpmPrefixStore; |
| 91 | import org.onosproject.routing.fpm.api.FpmRecord; |
| 92 | |
| 93 | /** |
| 94 | * Forwarding Plane Manager (FPM) route source. |
| 95 | */ |
| 96 | @Service |
| 97 | @Component(immediate = true) |
| 98 | public class FpmManager implements FpmInfoService { |
| 99 | private final Logger log = LoggerFactory.getLogger(getClass()); |
| 100 | |
| 101 | private static final int FPM_PORT = 2620; |
| 102 | private static final String APP_NAME = "org.onosproject.fpm"; |
| 103 | private static final int IDLE_TIMEOUT_SECS = 5; |
| 104 | |
| 105 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 106 | protected CoreService coreService; |
| 107 | |
| 108 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 109 | protected ComponentConfigService componentConfigService; |
| 110 | |
| 111 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 112 | protected RouteAdminService routeService; |
| 113 | |
| 114 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 115 | protected ClusterService clusterService; |
| 116 | |
| 117 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 118 | protected StorageService storageService; |
| 119 | |
| 120 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 121 | protected InterfaceService interfaceService; |
| 122 | |
| 123 | @Reference(cardinality = ReferenceCardinality.OPTIONAL_UNARY, |
| 124 | bind = "bindRipStore", |
| 125 | unbind = "unbindRipStore", |
| 126 | policy = ReferencePolicy.DYNAMIC, |
| 127 | target = "(fpm_type=RIP)") |
| 128 | protected volatile FpmPrefixStore ripStore; |
| 129 | |
| 130 | @Reference(cardinality = ReferenceCardinality.OPTIONAL_UNARY, |
| 131 | bind = "bindDhcpStore", |
| 132 | unbind = "unbindDhcpStore", |
| 133 | policy = ReferencePolicy.DYNAMIC, |
| 134 | target = "(fpm_type=DHCP)") |
| 135 | protected volatile FpmPrefixStore dhcpStore; |
| 136 | |
| 137 | private final StoreDelegate<FpmPrefixStoreEvent> fpmPrefixStoreDelegate |
| 138 | = new FpmPrefixStoreDelegate(); |
| 139 | |
| 140 | private ApplicationId appId; |
| 141 | private ServerBootstrap serverBootstrap; |
| 142 | private Channel serverChannel; |
| 143 | private ChannelGroup allChannels = new DefaultChannelGroup(); |
| 144 | |
| 145 | private ConsistentMap<FpmPeer, Set<FpmConnectionInfo>> peers; |
| 146 | |
| 147 | private Map<FpmPeer, Map<IpPrefix, Route>> fpmRoutes = new ConcurrentHashMap<>(); |
| 148 | |
| 149 | @Property(name = "clearRoutes", boolValue = true, |
| 150 | label = "Whether to clear routes when the FPM connection goes down") |
| 151 | private boolean clearRoutes = true; |
| 152 | |
| 153 | @Property(name = "pdPushEnabled", boolValue = false, |
| 154 | label = "Whether to push prefixes to Quagga over fpm connection") |
| 155 | private boolean pdPushEnabled = false; |
| 156 | |
| 157 | @Property(name = "pdPushNextHopIPv4", value = "", |
| 158 | label = "IPv4 next-hop address for PD Pushing.") |
| 159 | private Ip4Address pdPushNextHopIPv4 = null; |
| 160 | |
| 161 | @Property(name = "pdPushNextHopIPv6", value = "", |
| 162 | label = "IPv6 next-hop address for PD Pushing.") |
| 163 | private Ip6Address pdPushNextHopIPv6 = null; |
| 164 | |
| 165 | protected void bindRipStore(FpmPrefixStore store) { |
| 166 | if ((ripStore == null) && (store != null)) { |
| 167 | ripStore = store; |
| 168 | ripStore.setDelegate(fpmPrefixStoreDelegate); |
| 169 | for (Channel ch : allChannels) { |
| 170 | processRipStaticRoutes(ch); |
| 171 | } |
| 172 | } |
| 173 | } |
| 174 | |
| 175 | protected void unbindRipStore(FpmPrefixStore store) { |
| 176 | if (ripStore == store) { |
| 177 | ripStore.unsetDelegate(fpmPrefixStoreDelegate); |
| 178 | ripStore = null; |
| 179 | } |
| 180 | } |
| 181 | |
| 182 | protected void bindDhcpStore(FpmPrefixStore store) { |
| 183 | if ((dhcpStore == null) && (store != null)) { |
| 184 | dhcpStore = store; |
| 185 | dhcpStore.setDelegate(fpmPrefixStoreDelegate); |
| 186 | for (Channel ch : allChannels) { |
| 187 | processDhcpStaticRoutes(ch); |
| 188 | } |
| 189 | } |
| 190 | } |
| 191 | |
| 192 | protected void unbindDhcpStore(FpmPrefixStore store) { |
| 193 | if (dhcpStore == store) { |
| 194 | dhcpStore.unsetDelegate(fpmPrefixStoreDelegate); |
| 195 | dhcpStore = null; |
| 196 | } |
| 197 | } |
| 198 | |
| 199 | @Activate |
| 200 | protected void activate(ComponentContext context) { |
| 201 | componentConfigService.preSetProperty( |
| 202 | "org.onosproject.incubator.store.routing.impl.RouteStoreImpl", |
| 203 | "distributed", "true"); |
| 204 | |
| 205 | componentConfigService.registerProperties(getClass()); |
| 206 | |
| 207 | KryoNamespace serializer = KryoNamespace.newBuilder() |
| 208 | .register(KryoNamespaces.API) |
| 209 | .register(FpmPeer.class) |
| 210 | .register(FpmConnectionInfo.class) |
| 211 | .build(); |
| 212 | peers = storageService.<FpmPeer, Set<FpmConnectionInfo>>consistentMapBuilder() |
| 213 | .withName("fpm-connections") |
| 214 | .withSerializer(Serializer.using(serializer)) |
| 215 | .build(); |
| 216 | |
| 217 | modified(context); |
| 218 | startServer(); |
| 219 | |
| 220 | appId = coreService.registerApplication(APP_NAME, peers::destroy); |
| 221 | |
| 222 | log.info("Started"); |
| 223 | } |
| 224 | |
| 225 | @Deactivate |
| 226 | protected void deactivate() { |
| 227 | componentConfigService.preSetProperty( |
| 228 | "org.onosproject.incubator.store.routing.impl.RouteStoreImpl", |
| 229 | "distributed", "false"); |
| 230 | |
| 231 | stopServer(); |
| 232 | fpmRoutes.clear(); |
| 233 | componentConfigService.unregisterProperties(getClass(), false); |
| 234 | log.info("Stopped"); |
| 235 | } |
| 236 | |
| 237 | @Modified |
| 238 | protected void modified(ComponentContext context) { |
| 239 | Dictionary<?, ?> properties = context.getProperties(); |
| 240 | if (properties == null) { |
| 241 | return; |
| 242 | } |
| 243 | String strClearRoutes = Tools.get(properties, "clearRoutes"); |
| 244 | if (strClearRoutes != null) { |
| 245 | clearRoutes = Boolean.parseBoolean(strClearRoutes); |
| 246 | log.info("clearRoutes is {}", clearRoutes); |
| 247 | } |
| 248 | |
| 249 | String strPdPushEnabled = Tools.get(properties, "pdPushEnabled"); |
| 250 | if (strPdPushEnabled != null) { |
| 251 | boolean oldValue = pdPushEnabled; |
| 252 | pdPushEnabled = Boolean.parseBoolean(strPdPushEnabled); |
| 253 | if (pdPushEnabled) { |
| 254 | |
| 255 | pdPushNextHopIPv4 = null; |
| 256 | pdPushNextHopIPv6 = null; |
| 257 | |
| 258 | String strPdPushNextHopIPv4 = Tools.get(properties, "pdPushNextHopIPv4"); |
| 259 | if (strPdPushNextHopIPv4 != null) { |
| 260 | pdPushNextHopIPv4 = Ip4Address.valueOf(strPdPushNextHopIPv4); |
| 261 | } |
| 262 | String strPdPushNextHopIPv6 = Tools.get(properties, "pdPushNextHopIPv6"); |
| 263 | if (strPdPushNextHopIPv6 != null) { |
| 264 | pdPushNextHopIPv6 = Ip6Address.valueOf(strPdPushNextHopIPv6); |
| 265 | } |
| 266 | |
| 267 | if (pdPushNextHopIPv4 == null) { |
| 268 | pdPushNextHopIPv4 = interfaceService.getInterfaces() |
| 269 | .stream() |
| 270 | .filter(iface -> iface.name().contains("RUR")) |
| 271 | .map(Interface::ipAddressesList) |
| 272 | .flatMap(Collection::stream) |
| 273 | .map(InterfaceIpAddress::ipAddress) |
| 274 | .filter(IpAddress::isIp4) |
| 275 | .map(IpAddress::getIp4Address) |
| 276 | .findFirst() |
| 277 | .orElse(null); |
| 278 | } |
| 279 | |
| 280 | if (pdPushNextHopIPv6 == null) { |
| 281 | pdPushNextHopIPv6 = interfaceService.getInterfaces() |
| 282 | .stream() |
| 283 | .filter(iface -> iface.name().contains("RUR")) |
| 284 | .map(Interface::ipAddressesList) |
| 285 | .flatMap(Collection::stream) |
| 286 | .map(InterfaceIpAddress::ipAddress) |
| 287 | .filter(IpAddress::isIp6) |
| 288 | .map(IpAddress::getIp6Address) |
| 289 | .findFirst() |
| 290 | .orElse(null); |
| 291 | } |
| 292 | |
| 293 | log.info("PD pushing is enabled."); |
| 294 | if (pdPushNextHopIPv4 != null) { |
| 295 | log.info("ipv4 next-hop {}", pdPushNextHopIPv4.toString()); |
| 296 | } else { |
| 297 | log.info("ipv4 next-hop is null"); |
| 298 | } |
| 299 | if (pdPushNextHopIPv6 != null) { |
| 300 | log.info("ipv6 next-hop={}", pdPushNextHopIPv6.toString()); |
| 301 | } else { |
| 302 | log.info("ipv6 next-hop is null"); |
| 303 | } |
| 304 | if (!oldValue) { |
| 305 | processStaticRoutes(); |
| 306 | } |
| 307 | } else { |
| 308 | log.info("PD pushing is disabled."); |
| 309 | } |
| 310 | } |
| 311 | } |
| 312 | |
| 313 | private void startServer() { |
| 314 | HashedWheelTimer timer = new HashedWheelTimer( |
| 315 | groupedThreads("onos/fpm", "fpm-timer-%d", log)); |
| 316 | |
| 317 | ChannelFactory channelFactory = new NioServerSocketChannelFactory( |
| 318 | newCachedThreadPool(groupedThreads("onos/fpm", "sm-boss-%d", log)), |
| 319 | newCachedThreadPool(groupedThreads("onos/fpm", "sm-worker-%d", log))); |
| 320 | ChannelPipelineFactory pipelineFactory = () -> { |
| 321 | // Allocate a new session per connection |
| 322 | IdleStateHandler idleHandler = |
| 323 | new IdleStateHandler(timer, IDLE_TIMEOUT_SECS, 0, 0); |
| 324 | FpmSessionHandler fpmSessionHandler = |
| 325 | new FpmSessionHandler(this, new InternalFpmListener()); |
| 326 | FpmFrameDecoder fpmFrameDecoder = new FpmFrameDecoder(); |
| 327 | |
| 328 | // Setup the processing pipeline |
| 329 | ChannelPipeline pipeline = Channels.pipeline(); |
| 330 | pipeline.addLast("FpmFrameDecoder", fpmFrameDecoder); |
| 331 | pipeline.addLast("idle", idleHandler); |
| 332 | pipeline.addLast("FpmSession", fpmSessionHandler); |
| 333 | return pipeline; |
| 334 | }; |
| 335 | |
| 336 | InetSocketAddress listenAddress = new InetSocketAddress(FPM_PORT); |
| 337 | |
| 338 | serverBootstrap = new ServerBootstrap(channelFactory); |
| 339 | serverBootstrap.setOption("child.reuseAddr", true); |
| 340 | serverBootstrap.setOption("child.keepAlive", true); |
| 341 | serverBootstrap.setOption("child.tcpNoDelay", true); |
| 342 | serverBootstrap.setPipelineFactory(pipelineFactory); |
| 343 | try { |
| 344 | serverChannel = serverBootstrap.bind(listenAddress); |
| 345 | allChannels.add(serverChannel); |
| 346 | } catch (ChannelException e) { |
| 347 | log.debug("Exception binding to FPM port {}: ", |
| 348 | listenAddress.getPort(), e); |
| 349 | stopServer(); |
| 350 | } |
| 351 | } |
| 352 | |
| 353 | private void stopServer() { |
| 354 | allChannels.close().awaitUninterruptibly(); |
| 355 | allChannels.clear(); |
| 356 | if (serverBootstrap != null) { |
| 357 | serverBootstrap.releaseExternalResources(); |
| 358 | } |
| 359 | |
| 360 | if (clearRoutes) { |
| 361 | peers.keySet().forEach(this::clearRoutes); |
| 362 | } |
| 363 | } |
| 364 | |
Kalhee Kim | 40beb72 | 2018-01-16 20:32:04 +0000 | [diff] [blame] | 365 | private boolean routeInDhcpStore(IpPrefix prefix) { |
| 366 | |
| 367 | if (dhcpStore != null) { |
| 368 | Collection<FpmRecord> dhcpRecords = dhcpStore.getFpmRecords(); |
| 369 | return dhcpRecords.stream().anyMatch(record -> record.ipPrefix().equals(prefix)); |
| 370 | } |
| 371 | return false; |
| 372 | } |
| 373 | |
| 374 | private boolean routeInRipStore(IpPrefix prefix) { |
| 375 | |
| 376 | if (ripStore != null) { |
| 377 | Collection<FpmRecord> ripRecords = ripStore.getFpmRecords(); |
| 378 | return ripRecords.stream().anyMatch(record -> record.ipPrefix().equals(prefix)); |
| 379 | } |
| 380 | return false; |
| 381 | } |
| 382 | |
Kalhee Kim | ba36606 | 2017-11-07 16:32:09 +0000 | [diff] [blame] | 383 | private void fpmMessage(FpmPeer peer, FpmHeader fpmMessage) { |
| 384 | if (fpmMessage.type() == FpmHeader.FPM_TYPE_KEEPALIVE) { |
| 385 | return; |
| 386 | } |
| 387 | |
| 388 | Netlink netlink = fpmMessage.netlink(); |
| 389 | RtNetlink rtNetlink = netlink.rtNetlink(); |
| 390 | |
| 391 | if (log.isTraceEnabled()) { |
| 392 | log.trace("Received FPM message: {}", fpmMessage); |
| 393 | } |
| 394 | |
| 395 | if (!(rtNetlink.protocol() == RtProtocol.ZEBRA || |
| 396 | rtNetlink.protocol() == RtProtocol.UNSPEC)) { |
| 397 | log.trace("Ignoring non-zebra route"); |
| 398 | return; |
| 399 | } |
| 400 | |
| 401 | IpAddress dstAddress = null; |
| 402 | IpAddress gateway = null; |
| 403 | |
| 404 | for (RouteAttribute attribute : rtNetlink.attributes()) { |
| 405 | if (attribute.type() == RouteAttribute.RTA_DST) { |
| 406 | RouteAttributeDst raDst = (RouteAttributeDst) attribute; |
| 407 | dstAddress = raDst.dstAddress(); |
| 408 | } else if (attribute.type() == RouteAttribute.RTA_GATEWAY) { |
| 409 | RouteAttributeGateway raGateway = (RouteAttributeGateway) attribute; |
| 410 | gateway = raGateway.gateway(); |
| 411 | } |
| 412 | } |
| 413 | |
| 414 | if (dstAddress == null) { |
| 415 | log.error("Dst address missing!"); |
| 416 | return; |
| 417 | } |
| 418 | |
| 419 | IpPrefix prefix = IpPrefix.valueOf(dstAddress, rtNetlink.dstLength()); |
| 420 | |
Kalhee Kim | 40beb72 | 2018-01-16 20:32:04 +0000 | [diff] [blame] | 421 | // Ignore routes that we sent. |
| 422 | if ((prefix.isIp4() && (gateway.equals(pdPushNextHopIPv4))) || |
| 423 | gateway.equals(pdPushNextHopIPv6)) { |
| 424 | if (routeInDhcpStore(prefix) || routeInRipStore(prefix)) { |
| 425 | return; |
| 426 | } |
| 427 | } |
| 428 | |
Kalhee Kim | ba36606 | 2017-11-07 16:32:09 +0000 | [diff] [blame] | 429 | List<Route> updates = new LinkedList<>(); |
| 430 | List<Route> withdraws = new LinkedList<>(); |
| 431 | |
| 432 | Route route; |
| 433 | switch (netlink.type()) { |
| 434 | case RTM_NEWROUTE: |
| 435 | if (gateway == null) { |
| 436 | // We ignore interface routes with no gateway for now. |
| 437 | return; |
| 438 | } |
| 439 | route = new Route(Route.Source.FPM, prefix, gateway, clusterService.getLocalNode().id()); |
| 440 | |
| 441 | |
| 442 | Route oldRoute = fpmRoutes.get(peer).put(prefix, route); |
| 443 | |
| 444 | if (oldRoute != null) { |
| 445 | log.trace("Swapping {} with {}", oldRoute, route); |
| 446 | withdraws.add(oldRoute); |
| 447 | } |
| 448 | updates.add(route); |
| 449 | break; |
| 450 | case RTM_DELROUTE: |
| 451 | Route existing = fpmRoutes.get(peer).remove(prefix); |
| 452 | if (existing == null) { |
| 453 | log.warn("Got delete for non-existent prefix"); |
| 454 | return; |
| 455 | } |
| 456 | |
| 457 | route = new Route(Route.Source.FPM, prefix, existing.nextHop(), clusterService.getLocalNode().id()); |
| 458 | |
| 459 | withdraws.add(route); |
| 460 | break; |
| 461 | case RTM_GETROUTE: |
| 462 | default: |
| 463 | break; |
| 464 | } |
| 465 | |
| 466 | routeService.withdraw(withdraws); |
| 467 | routeService.update(updates); |
| 468 | } |
| 469 | |
| 470 | private void clearRoutes(FpmPeer peer) { |
| 471 | log.info("Clearing all routes for peer {}", peer); |
| 472 | Map<IpPrefix, Route> routes = fpmRoutes.remove(peer); |
| 473 | if (routes != null) { |
| 474 | routeService.withdraw(routes.values()); |
| 475 | } |
| 476 | } |
| 477 | |
| 478 | public void processStaticRoutes() { |
| 479 | for (Channel ch : allChannels) { |
| 480 | processStaticRoutes(ch); |
| 481 | } |
| 482 | } |
| 483 | |
| 484 | public void processStaticRoutes(Channel ch) { |
| 485 | processRipStaticRoutes(ch); |
| 486 | processDhcpStaticRoutes(ch); |
| 487 | } |
| 488 | |
| 489 | private void processRipStaticRoutes(Channel ch) { |
| 490 | |
| 491 | /* Get RIP static routes. */ |
| 492 | if (ripStore != null) { |
| 493 | Collection<FpmRecord> ripRecords = ripStore.getFpmRecords(); |
| 494 | log.info("RIP store size is {}", ripRecords.size()); |
| 495 | |
| 496 | ripRecords.forEach(record -> sendRouteUpdateToChannel(true, |
| 497 | record.ipPrefix(), ch)); |
| 498 | } |
| 499 | } |
| 500 | |
| 501 | private void processDhcpStaticRoutes(Channel ch) { |
| 502 | |
| 503 | /* Get Dhcp static routes. */ |
| 504 | if (dhcpStore != null) { |
| 505 | Collection<FpmRecord> dhcpRecords = dhcpStore.getFpmRecords(); |
| 506 | log.info("Dhcp store size is {}", dhcpRecords.size()); |
| 507 | |
| 508 | dhcpRecords.forEach(record -> sendRouteUpdateToChannel(true, |
| 509 | record.ipPrefix(), ch)); |
| 510 | } |
| 511 | } |
| 512 | |
| 513 | private void sendRouteUpdateToChannel(boolean isAdd, IpPrefix prefix, Channel ch) { |
| 514 | |
| 515 | int netLinkLength; |
| 516 | short addrFamily; |
| 517 | IpAddress pdPushNextHop; |
| 518 | |
| 519 | if (!pdPushEnabled) { |
| 520 | return; |
| 521 | } |
| 522 | |
| 523 | try { |
| 524 | // Construct list of route attributes. |
| 525 | List<RouteAttribute> attributes = new ArrayList<>(); |
| 526 | if (prefix.isIp4()) { |
| 527 | if (pdPushNextHopIPv4 == null) { |
| 528 | log.info("Prefix not pushed because ipv4 next-hop is null."); |
| 529 | return; |
| 530 | } |
| 531 | pdPushNextHop = pdPushNextHopIPv4; |
| 532 | netLinkLength = Ip4Address.BYTE_LENGTH + RouteAttribute.ROUTE_ATTRIBUTE_HEADER_LENGTH; |
| 533 | addrFamily = RtNetlink.RT_ADDRESS_FAMILY_INET; |
| 534 | } else { |
| 535 | if (pdPushNextHopIPv6 == null) { |
| 536 | log.info("Prefix not pushed because ipv6 next-hop is null."); |
| 537 | return; |
| 538 | } |
| 539 | pdPushNextHop = pdPushNextHopIPv6; |
| 540 | netLinkLength = Ip6Address.BYTE_LENGTH + RouteAttribute.ROUTE_ATTRIBUTE_HEADER_LENGTH; |
| 541 | addrFamily = RtNetlink.RT_ADDRESS_FAMILY_INET6; |
| 542 | } |
| 543 | |
| 544 | RouteAttributeDst raDst = new RouteAttributeDst( |
| 545 | netLinkLength, |
| 546 | RouteAttribute.RTA_DST, |
| 547 | prefix.address()); |
| 548 | attributes.add(raDst); |
| 549 | |
| 550 | RouteAttributeGateway raGateway = new RouteAttributeGateway( |
| 551 | netLinkLength, |
| 552 | RouteAttribute.RTA_GATEWAY, |
| 553 | pdPushNextHop); |
| 554 | attributes.add(raGateway); |
| 555 | |
| 556 | // Add RtNetlink header. |
| 557 | int srcLength = 0; |
| 558 | short tos = 0; |
| 559 | short table = 0; |
| 560 | short scope = 0; |
| 561 | long rtFlags = 0; |
| 562 | int messageLength = raDst.length() + raGateway.length() + |
| 563 | RtNetlink.RT_NETLINK_LENGTH; |
| 564 | |
| 565 | RtNetlink rtNetlink = new RtNetlink( |
| 566 | addrFamily, |
| 567 | prefix.prefixLength(), |
| 568 | srcLength, |
| 569 | tos, |
| 570 | table, |
| 571 | RtProtocol.ZEBRA, |
| 572 | scope, |
| 573 | FpmHeader.FPM_TYPE_NETLINK, |
| 574 | rtFlags, |
| 575 | attributes); |
| 576 | |
| 577 | // Add Netlink header. |
| 578 | NetlinkMessageType nlMsgType; |
| 579 | if (isAdd) { |
| 580 | nlMsgType = NetlinkMessageType.RTM_NEWROUTE; |
| 581 | } else { |
| 582 | nlMsgType = NetlinkMessageType.RTM_DELROUTE; |
| 583 | } |
| 584 | int flags = Netlink.NETLINK_REQUEST | Netlink.NETLINK_CREATE; |
| 585 | long sequence = 0; |
| 586 | long processPortId = 0; |
| 587 | messageLength += Netlink.NETLINK_HEADER_LENGTH; |
| 588 | |
| 589 | Netlink netLink = new Netlink(messageLength, |
| 590 | nlMsgType, |
| 591 | flags, |
| 592 | sequence, |
| 593 | processPortId, |
| 594 | rtNetlink); |
| 595 | |
| 596 | messageLength += FpmHeader.FPM_HEADER_LENGTH; |
| 597 | |
| 598 | // Add FpmHeader. |
| 599 | FpmHeader fpmMessage = new FpmHeader( |
| 600 | FpmHeader.FPM_VERSION_1, |
| 601 | FpmHeader.FPM_TYPE_NETLINK, |
| 602 | messageLength, |
| 603 | netLink); |
| 604 | |
| 605 | // Encode message in a channel buffer and transmit. |
| 606 | ch.write(fpmMessage.encode()); |
| 607 | |
| 608 | } catch (RuntimeException e) { |
| 609 | log.info("Route not sent over fpm connection."); |
| 610 | } |
| 611 | } |
| 612 | |
| 613 | private void sendRouteUpdate(boolean isAdd, IpPrefix prefix) { |
| 614 | |
| 615 | for (Channel ch : allChannels) { |
| 616 | sendRouteUpdateToChannel(isAdd, prefix, ch); |
| 617 | } |
| 618 | } |
| 619 | |
| 620 | public boolean isPdPushEnabled() { |
| 621 | return pdPushEnabled; |
| 622 | } |
| 623 | |
| 624 | private FpmPeerInfo toFpmInfo(FpmPeer peer, Collection<FpmConnectionInfo> connections) { |
| 625 | return new FpmPeerInfo(connections, |
| 626 | fpmRoutes.getOrDefault(peer, Collections.emptyMap()).size()); |
| 627 | } |
| 628 | |
| 629 | @Override |
| 630 | public Map<FpmPeer, FpmPeerInfo> peers() { |
| 631 | return peers.asJavaMap().entrySet().stream() |
| 632 | .collect(Collectors.toMap( |
| 633 | e -> e.getKey(), |
| 634 | e -> toFpmInfo(e.getKey(), e.getValue()))); |
| 635 | } |
| 636 | |
| 637 | private class InternalFpmListener implements FpmListener { |
| 638 | @Override |
| 639 | public void fpmMessage(FpmPeer peer, FpmHeader fpmMessage) { |
| 640 | FpmManager.this.fpmMessage(peer, fpmMessage); |
| 641 | } |
| 642 | |
| 643 | @Override |
| 644 | public boolean peerConnected(FpmPeer peer) { |
| 645 | if (peers.keySet().contains(peer)) { |
| 646 | return false; |
| 647 | } |
| 648 | |
| 649 | NodeId localNode = clusterService.getLocalNode().id(); |
| 650 | peers.compute(peer, (p, infos) -> { |
| 651 | if (infos == null) { |
| 652 | infos = new HashSet<>(); |
| 653 | } |
| 654 | |
| 655 | infos.add(new FpmConnectionInfo(localNode, peer, System.currentTimeMillis())); |
| 656 | return infos; |
| 657 | }); |
| 658 | |
| 659 | fpmRoutes.computeIfAbsent(peer, p -> new ConcurrentHashMap<>()); |
| 660 | return true; |
| 661 | } |
| 662 | |
| 663 | @Override |
| 664 | public void peerDisconnected(FpmPeer peer) { |
| 665 | log.info("FPM connection to {} went down", peer); |
| 666 | |
| 667 | if (clearRoutes) { |
| 668 | clearRoutes(peer); |
| 669 | } |
| 670 | |
| 671 | peers.compute(peer, (p, infos) -> { |
| 672 | if (infos == null) { |
| 673 | return null; |
| 674 | } |
| 675 | |
| 676 | infos.stream() |
| 677 | .filter(i -> i.connectedTo().equals(clusterService.getLocalNode().id())) |
| 678 | .findAny() |
| 679 | .ifPresent(i -> infos.remove(i)); |
| 680 | |
| 681 | if (infos.isEmpty()) { |
| 682 | return null; |
| 683 | } |
| 684 | |
| 685 | return infos; |
| 686 | }); |
| 687 | } |
| 688 | } |
| 689 | |
| 690 | /** |
| 691 | * Adds a channel to the channel group. |
| 692 | * |
| 693 | * @param channel the channel to add |
| 694 | */ |
| 695 | public void addSessionChannel(Channel channel) { |
| 696 | allChannels.add(channel); |
| 697 | } |
| 698 | |
| 699 | /** |
| 700 | * Removes a channel from the channel group. |
| 701 | * |
| 702 | * @param channel the channel to remove |
| 703 | */ |
| 704 | public void removeSessionChannel(Channel channel) { |
| 705 | allChannels.remove(channel); |
| 706 | } |
| 707 | |
| 708 | /** |
| 709 | * Store delegate for Fpm Prefix store. |
| 710 | * Handles Fpm prefix store event. |
| 711 | */ |
| 712 | class FpmPrefixStoreDelegate implements StoreDelegate<FpmPrefixStoreEvent> { |
| 713 | |
| 714 | @Override |
| 715 | public void notify(FpmPrefixStoreEvent e) { |
| 716 | |
| 717 | log.trace("FpmPrefixStoreEvent notify"); |
| 718 | |
| 719 | FpmRecord record = e.subject(); |
| 720 | switch (e.type()) { |
| 721 | case ADD: |
| 722 | sendRouteUpdate(true, record.ipPrefix()); |
| 723 | break; |
| 724 | case REMOVE: |
| 725 | sendRouteUpdate(false, record.ipPrefix()); |
| 726 | break; |
| 727 | default: |
| 728 | log.warn("unsupported store event type", e.type()); |
| 729 | return; |
| 730 | } |
| 731 | } |
| 732 | } |
| 733 | } |