diff options
Diffstat (limited to 'framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl')
10 files changed, 3035 insertions, 0 deletions
diff --git a/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/Controller.java b/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/Controller.java new file mode 100644 index 00000000..56b3a99c --- /dev/null +++ b/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/Controller.java @@ -0,0 +1,328 @@ +/* + * Copyright 2014-2015 Open Networking Laboratory + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.onosproject.openflow.controller.impl; + +import com.google.common.base.Strings; +import com.google.common.collect.ImmutableList; +import org.jboss.netty.bootstrap.ServerBootstrap; +import org.jboss.netty.channel.ChannelPipelineFactory; +import org.jboss.netty.channel.group.ChannelGroup; +import org.jboss.netty.channel.group.DefaultChannelGroup; +import org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory; +import org.onlab.util.ItemNotFoundException; +import org.onosproject.net.DeviceId; +import org.onosproject.net.driver.DefaultDriverData; +import org.onosproject.net.driver.DefaultDriverHandler; +import org.onosproject.net.driver.Driver; +import org.onosproject.net.driver.DriverService; +import org.onosproject.openflow.controller.Dpid; +import org.onosproject.openflow.controller.driver.OpenFlowAgent; +import org.onosproject.openflow.controller.driver.OpenFlowSwitchDriver; +import org.projectfloodlight.openflow.protocol.OFDescStatsReply; +import org.projectfloodlight.openflow.protocol.OFFactories; +import org.projectfloodlight.openflow.protocol.OFFactory; +import org.projectfloodlight.openflow.protocol.OFVersion; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import javax.net.ssl.KeyManagerFactory; +import javax.net.ssl.SSLContext; +import javax.net.ssl.SSLEngine; +import javax.net.ssl.TrustManagerFactory; +import java.io.FileInputStream; +import java.lang.management.ManagementFactory; +import java.lang.management.RuntimeMXBean; +import java.net.InetSocketAddress; +import java.security.KeyStore; +import java.util.Dictionary; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.concurrent.Executors; +import java.util.stream.Collectors; +import java.util.stream.Stream; + +import static org.onlab.util.Tools.get; +import static org.onlab.util.Tools.groupedThreads; +import static org.onosproject.net.DeviceId.deviceId; +import static org.onosproject.openflow.controller.Dpid.uri; + + +/** + * The main controller class. Handles all setup and network listeners + * - Distributed ownership control of switch through IControllerRegistryService + */ +public class Controller { + + protected static final Logger log = LoggerFactory.getLogger(Controller.class); + + protected static final OFFactory FACTORY13 = OFFactories.getFactory(OFVersion.OF_13); + protected static final OFFactory FACTORY10 = OFFactories.getFactory(OFVersion.OF_10); + private static final boolean TLS_DISABLED = false; + private static final short MIN_KS_LENGTH = 6; + + protected HashMap<String, String> controllerNodeIPsCache; + + private ChannelGroup cg; + + // Configuration options + protected List<Integer> openFlowPorts = ImmutableList.of(6633, 6653); + protected int workerThreads = 16; + + // Start time of the controller + protected long systemStartTime; + + private OpenFlowAgent agent; + + private NioServerSocketChannelFactory execFactory; + + protected String ksLocation; + protected String tsLocation; + protected char[] ksPwd; + protected char[] tsPwd; + protected SSLEngine serverSslEngine; + + // Perf. related configuration + protected static final int SEND_BUFFER_SIZE = 4 * 1024 * 1024; + private DriverService driverService; + private boolean enableOfTls = TLS_DISABLED; + + // *************** + // Getters/Setters + // *************** + + public OFFactory getOFMessageFactory10() { + return FACTORY10; + } + + + public OFFactory getOFMessageFactory13() { + return FACTORY13; + } + + // ************** + // Initialization + // ************** + + /** + * Tell controller that we're ready to accept switches loop. + */ + public void run() { + + try { + final ServerBootstrap bootstrap = createServerBootStrap(); + + bootstrap.setOption("reuseAddr", true); + bootstrap.setOption("child.keepAlive", true); + bootstrap.setOption("child.tcpNoDelay", true); + bootstrap.setOption("child.sendBufferSize", Controller.SEND_BUFFER_SIZE); + + ChannelPipelineFactory pfact = + new OpenflowPipelineFactory(this, null, serverSslEngine); + bootstrap.setPipelineFactory(pfact); + cg = new DefaultChannelGroup(); + openFlowPorts.forEach(port -> { + InetSocketAddress sa = new InetSocketAddress(port); + cg.add(bootstrap.bind(sa)); + log.info("Listening for switch connections on {}", sa); + }); + + } catch (Exception e) { + throw new RuntimeException(e); + } + + } + + private ServerBootstrap createServerBootStrap() { + + if (workerThreads == 0) { + execFactory = new NioServerSocketChannelFactory( + Executors.newCachedThreadPool(groupedThreads("onos/of", "boss-%d")), + Executors.newCachedThreadPool(groupedThreads("onos/of", "worker-%d"))); + return new ServerBootstrap(execFactory); + } else { + execFactory = new NioServerSocketChannelFactory( + Executors.newCachedThreadPool(groupedThreads("onos/of", "boss-%d")), + Executors.newCachedThreadPool(groupedThreads("onos/of", "worker-%d")), workerThreads); + return new ServerBootstrap(execFactory); + } + } + + public void setConfigParams(Dictionary<?, ?> properties) { + String ports = get(properties, "openflowPorts"); + if (!Strings.isNullOrEmpty(ports)) { + this.openFlowPorts = Stream.of(ports.split(",")) + .map(s -> Integer.parseInt(s)) + .collect(Collectors.toList()); + } + log.debug("OpenFlow ports set to {}", this.openFlowPorts); + + String threads = get(properties, "workerThreads"); + if (!Strings.isNullOrEmpty(threads)) { + this.workerThreads = Integer.parseInt(threads); + } + log.debug("Number of worker threads set to {}", this.workerThreads); + } + + /** + * Initialize internal data structures. + */ + public void init() { + // These data structures are initialized here because other + // module's startUp() might be called before ours + this.controllerNodeIPsCache = new HashMap<>(); + + this.systemStartTime = System.currentTimeMillis(); + + try { + getTlsParameters(); + if (enableOfTls) { + initSsl(); + } + } catch (Exception ex) { + log.error("SSL init failed: {}", ex.getMessage()); + } + + } + + private void getTlsParameters() { + String tempString = System.getProperty("enableOFTLS"); + enableOfTls = Strings.isNullOrEmpty(tempString) ? TLS_DISABLED : Boolean.parseBoolean(tempString); + log.info("OpenFlow Security is {}", enableOfTls ? "enabled" : "disabled"); + if (enableOfTls) { + ksLocation = System.getProperty("javax.net.ssl.keyStore"); + if (Strings.isNullOrEmpty(ksLocation)) { + enableOfTls = TLS_DISABLED; + return; + } + tsLocation = System.getProperty("javax.net.ssl.trustStore"); + if (Strings.isNullOrEmpty(tsLocation)) { + enableOfTls = TLS_DISABLED; + return; + } + ksPwd = System.getProperty("javax.net.ssl.keyStorePassword").toCharArray(); + if (MIN_KS_LENGTH > ksPwd.length) { + enableOfTls = TLS_DISABLED; + return; + } + tsPwd = System.getProperty("javax.net.ssl.trustStorePassword").toCharArray(); + if (MIN_KS_LENGTH > tsPwd.length) { + enableOfTls = TLS_DISABLED; + return; + } + } + } + + private void initSsl() throws Exception { + + TrustManagerFactory tmFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm()); + KeyStore ts = KeyStore.getInstance("JKS"); + ts.load(new FileInputStream(tsLocation), tsPwd); + tmFactory.init(ts); + + KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm()); + KeyStore ks = KeyStore.getInstance("JKS"); + ks.load(new FileInputStream(ksLocation), ksPwd); + kmf.init(ks, ksPwd); + + SSLContext serverContext = SSLContext.getInstance("TLS"); + serverContext.init(kmf.getKeyManagers(), tmFactory.getTrustManagers(), null); + + serverSslEngine = serverContext.createSSLEngine(); + + serverSslEngine.setNeedClientAuth(true); + serverSslEngine.setUseClientMode(false); + serverSslEngine.setEnabledProtocols(serverSslEngine.getSupportedProtocols()); + serverSslEngine.setEnabledCipherSuites(serverSslEngine.getSupportedCipherSuites()); + serverSslEngine.setEnableSessionCreation(true); + } + + // ************** + // Utility methods + // ************** + + public Map<String, Long> getMemory() { + Map<String, Long> m = new HashMap<>(); + Runtime runtime = Runtime.getRuntime(); + m.put("total", runtime.totalMemory()); + m.put("free", runtime.freeMemory()); + return m; + } + + + public Long getSystemUptime() { + RuntimeMXBean rb = ManagementFactory.getRuntimeMXBean(); + return rb.getUptime(); + } + + public long getSystemStartTime() { + return (this.systemStartTime); + } + + /** + * Forward to the driver-manager to get an IOFSwitch instance. + * + * @param dpid data path id + * @param desc switch description + * @param ofv OpenFlow version + * @return switch instance + */ + protected OpenFlowSwitchDriver getOFSwitchInstance(long dpid, + OFDescStatsReply desc, + OFVersion ofv) { + Dpid dpidObj = new Dpid(dpid); + + Driver driver; + try { + driver = driverService.getDriver(DeviceId.deviceId(Dpid.uri(dpidObj))); + } catch (ItemNotFoundException e) { + driver = driverService.getDriver(desc.getMfrDesc(), desc.getHwDesc(), desc.getSwDesc()); + } + + if (driver != null && driver.hasBehaviour(OpenFlowSwitchDriver.class)) { + Dpid did = new Dpid(dpid); + DefaultDriverHandler handler = + new DefaultDriverHandler(new DefaultDriverData(driver, deviceId(uri(did)))); + OpenFlowSwitchDriver ofSwitchDriver = + driver.createBehaviour(handler, OpenFlowSwitchDriver.class); + ofSwitchDriver.init(did, desc, ofv); + ofSwitchDriver.setAgent(agent); + ofSwitchDriver.setRoleHandler(new RoleManager(ofSwitchDriver)); + log.info("OpenFlow handshaker found for device {}: {}", dpid, ofSwitchDriver); + return ofSwitchDriver; + } + log.error("No OpenFlow driver for {} : {}", dpid, desc); + return null; + + } + + public void start(OpenFlowAgent ag, DriverService driverService) { + log.info("Starting OpenFlow IO"); + this.agent = ag; + this.driverService = driverService; + this.init(); + this.run(); + } + + + public void stop() { + log.info("Stopping OpenFlow IO"); + cg.close(); + execFactory.shutdown(); + } + +} diff --git a/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/HandshakeTimeoutException.java b/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/HandshakeTimeoutException.java new file mode 100644 index 00000000..bbe307be --- /dev/null +++ b/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/HandshakeTimeoutException.java @@ -0,0 +1,28 @@ +/* + * Copyright 2014 Open Networking Laboratory + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.onosproject.openflow.controller.impl; + +/** + * Exception is thrown when the handshake fails to complete. + * before a specified time + * + */ +public class HandshakeTimeoutException extends Exception { + + private static final long serialVersionUID = 6859880268940337312L; + +} diff --git a/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/HandshakeTimeoutHandler.java b/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/HandshakeTimeoutHandler.java new file mode 100644 index 00000000..fbbe3428 --- /dev/null +++ b/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/HandshakeTimeoutHandler.java @@ -0,0 +1,93 @@ +/* + * Copyright 2014 Open Networking Laboratory + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.onosproject.openflow.controller.impl; + +import java.util.concurrent.TimeUnit; + +import org.jboss.netty.channel.ChannelHandlerContext; +import org.jboss.netty.channel.ChannelStateEvent; +import org.jboss.netty.channel.Channels; +import org.jboss.netty.channel.SimpleChannelUpstreamHandler; +import org.jboss.netty.util.Timeout; +import org.jboss.netty.util.Timer; +import org.jboss.netty.util.TimerTask; + +/** + * Trigger a timeout if a switch fails to complete handshake soon enough. + */ +public class HandshakeTimeoutHandler + extends SimpleChannelUpstreamHandler { + static final HandshakeTimeoutException EXCEPTION = + new HandshakeTimeoutException(); + + final OFChannelHandler channelHandler; + final Timer timer; + final long timeoutNanos; + volatile Timeout timeout; + + public HandshakeTimeoutHandler(OFChannelHandler channelHandler, + Timer timer, + long timeoutSeconds) { + super(); + this.channelHandler = channelHandler; + this.timer = timer; + this.timeoutNanos = TimeUnit.SECONDS.toNanos(timeoutSeconds); + + } + + @Override + public void channelOpen(ChannelHandlerContext ctx, ChannelStateEvent e) + throws Exception { + if (timeoutNanos > 0) { + timeout = timer.newTimeout(new HandshakeTimeoutTask(ctx), + timeoutNanos, TimeUnit.NANOSECONDS); + } + ctx.sendUpstream(e); + } + + @Override + public void channelClosed(ChannelHandlerContext ctx, ChannelStateEvent e) + throws Exception { + if (timeout != null) { + timeout.cancel(); + timeout = null; + } + } + + private final class HandshakeTimeoutTask implements TimerTask { + + private final ChannelHandlerContext ctx; + + HandshakeTimeoutTask(ChannelHandlerContext ctx) { + this.ctx = ctx; + } + + @Override + public void run(Timeout t) throws Exception { + if (t.isCancelled()) { + return; + } + + if (!ctx.getChannel().isOpen()) { + return; + } + if (!channelHandler.isHandshakeComplete()) { + Channels.fireExceptionCaught(ctx, EXCEPTION); + } + } + } +} diff --git a/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/OFChannelHandler.java b/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/OFChannelHandler.java new file mode 100644 index 00000000..ff92b77e --- /dev/null +++ b/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/OFChannelHandler.java @@ -0,0 +1,1320 @@ +/* + * Copyright 2014-2015 Open Networking Laboratory + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +//CHECKSTYLE:OFF +package org.onosproject.openflow.controller.impl; + +import java.io.IOException; +import java.nio.channels.ClosedChannelException; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; +import java.util.concurrent.CopyOnWriteArrayList; +import java.util.concurrent.RejectedExecutionException; + +import org.jboss.netty.channel.Channel; +import org.jboss.netty.channel.ChannelHandlerContext; +import org.jboss.netty.channel.ChannelStateEvent; +import org.jboss.netty.channel.ExceptionEvent; +import org.jboss.netty.channel.MessageEvent; +import org.jboss.netty.handler.timeout.IdleStateAwareChannelHandler; +import org.jboss.netty.handler.timeout.IdleStateEvent; +import org.jboss.netty.handler.timeout.ReadTimeoutException; +import org.onosproject.openflow.controller.driver.OpenFlowSwitchDriver; +import org.onosproject.openflow.controller.driver.SwitchStateException; +import org.projectfloodlight.openflow.exceptions.OFParseError; +import org.projectfloodlight.openflow.protocol.OFAsyncGetReply; +import org.projectfloodlight.openflow.protocol.OFBadRequestCode; +import org.projectfloodlight.openflow.protocol.OFBarrierReply; +import org.projectfloodlight.openflow.protocol.OFBarrierRequest; +import org.projectfloodlight.openflow.protocol.OFDescStatsReply; +import org.projectfloodlight.openflow.protocol.OFDescStatsRequest; +import org.projectfloodlight.openflow.protocol.OFEchoReply; +import org.projectfloodlight.openflow.protocol.OFEchoRequest; +import org.projectfloodlight.openflow.protocol.OFErrorMsg; +import org.projectfloodlight.openflow.protocol.OFErrorType; +import org.projectfloodlight.openflow.protocol.OFExperimenter; +import org.projectfloodlight.openflow.protocol.OFFactory; +import org.projectfloodlight.openflow.protocol.OFFeaturesReply; +import org.projectfloodlight.openflow.protocol.OFFlowModFailedCode; +import org.projectfloodlight.openflow.protocol.OFFlowRemoved; +import org.projectfloodlight.openflow.protocol.OFGetConfigReply; +import org.projectfloodlight.openflow.protocol.OFGetConfigRequest; +import org.projectfloodlight.openflow.protocol.OFHello; +import org.projectfloodlight.openflow.protocol.OFHelloElem; +import org.projectfloodlight.openflow.protocol.OFMessage; +import org.projectfloodlight.openflow.protocol.OFPacketIn; +import org.projectfloodlight.openflow.protocol.OFPortDescStatsReply; +import org.projectfloodlight.openflow.protocol.OFPortDescStatsRequest; +import org.projectfloodlight.openflow.protocol.OFPortStatus; +import org.projectfloodlight.openflow.protocol.OFQueueGetConfigReply; +import org.projectfloodlight.openflow.protocol.OFRoleReply; +import org.projectfloodlight.openflow.protocol.OFSetConfig; +import org.projectfloodlight.openflow.protocol.OFStatsReply; +import org.projectfloodlight.openflow.protocol.OFStatsReplyFlags; +import org.projectfloodlight.openflow.protocol.OFStatsType; +import org.projectfloodlight.openflow.protocol.OFType; +import org.projectfloodlight.openflow.protocol.OFVersion; +import org.projectfloodlight.openflow.protocol.errormsg.OFBadRequestErrorMsg; +import org.projectfloodlight.openflow.protocol.errormsg.OFFlowModFailedErrorMsg; +import org.projectfloodlight.openflow.types.U32; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * Channel handler deals with the switch connection and dispatches + * switch messages to the appropriate locations. + */ +class OFChannelHandler extends IdleStateAwareChannelHandler { + private static final Logger log = LoggerFactory.getLogger(OFChannelHandler.class); + + private static final String RESET_BY_PEER = "Connection reset by peer"; + private static final String BROKEN_PIPE = "Broken pipe"; + + private final Controller controller; + private OpenFlowSwitchDriver sw; + private long thisdpid; // channelHandler cached value of connected switch id + private Channel channel; + // State needs to be volatile because the HandshakeTimeoutHandler + // needs to check if the handshake is complete + private volatile ChannelState state; + + // When a switch with a duplicate dpid is found (i.e we already have a + // connected switch with the same dpid), the new switch is immediately + // disconnected. At that point netty callsback channelDisconnected() which + // proceeds to cleaup switch state - we need to ensure that it does not cleanup + // switch state for the older (still connected) switch + private volatile Boolean duplicateDpidFound; + + // Temporary storage for switch-features and port-description + private OFFeaturesReply featuresReply; + private List<OFPortDescStatsReply> portDescReplies; + //private OFPortDescStatsReply portDescReply; + // a concurrent ArrayList to temporarily store port status messages + // before we are ready to deal with them + private final CopyOnWriteArrayList<OFPortStatus> pendingPortStatusMsg; + + //Indicates the openflow version used by this switch + protected OFVersion ofVersion; + protected OFFactory factory13; + protected OFFactory factory10; + + /** transaction Ids to use during handshake. Since only one thread + * calls into an OFChannelHandler instance, we don't need atomic. + * We will count down + */ + private int handshakeTransactionIds = -1; + + /** + * Create a new unconnected OFChannelHandler. + * @param controller parent controller + */ + OFChannelHandler(Controller controller) { + this.controller = controller; + this.state = ChannelState.INIT; + this.pendingPortStatusMsg = new CopyOnWriteArrayList<OFPortStatus>(); + this.portDescReplies = new ArrayList<OFPortDescStatsReply>(); + factory13 = controller.getOFMessageFactory13(); + factory10 = controller.getOFMessageFactory10(); + duplicateDpidFound = Boolean.FALSE; + } + + + + // XXX S consider if necessary + public void disconnectSwitch() { + sw.disconnectSwitch(); + } + + + + //************************* + // Channel State Machine + //************************* + + /** + * The state machine for handling the switch/channel state. All state + * transitions should happen from within the state machine (and not from other + * parts of the code) + */ + enum ChannelState { + /** + * Initial state before channel is connected. + */ + INIT(false) { + @Override + void processOFMessage(OFChannelHandler h, OFMessage m) + throws IOException, SwitchStateException { + illegalMessageReceived(h, m); + } + + @Override + void processOFError(OFChannelHandler h, OFErrorMsg m) + throws IOException { + // need to implement since its abstract but it will never + // be called + } + + @Override + void processOFPortStatus(OFChannelHandler h, OFPortStatus m) + throws IOException { + unhandledMessageReceived(h, m); + } + }, + + /** + * We send a OF 1.3 HELLO to the switch and wait for a Hello from the switch. + * Once we receive the reply, we decide on OF 1.3 or 1.0 switch - no other + * protocol version is accepted. + * We send an OFFeaturesRequest depending on the protocol version selected + * Next state is WAIT_FEATURES_REPLY + */ + WAIT_HELLO(false) { + @Override + void processOFHello(OFChannelHandler h, OFHello m) + throws IOException { + // TODO We could check for the optional bitmap, but for now + // we are just checking the version number. + if (m.getVersion().getWireVersion() >= OFVersion.OF_13.getWireVersion()) { + log.debug("Received {} Hello from {} - switching to OF " + + "version 1.3", m.getVersion(), + h.channel.getRemoteAddress()); + h.sendHandshakeHelloMessage(); + h.ofVersion = OFVersion.OF_13; + } else if (m.getVersion().getWireVersion() >= OFVersion.OF_10.getWireVersion()) { + log.debug("Received {} Hello from {} - switching to OF " + + "version 1.0", m.getVersion(), + h.channel.getRemoteAddress()); + OFHello hi = + h.factory10.buildHello() + .setXid(h.handshakeTransactionIds--) + .build(); + h.channel.write(Collections.singletonList(hi)); + h.ofVersion = OFVersion.OF_10; + } else { + log.error("Received Hello of version {} from switch at {}. " + + "This controller works with OF1.0 and OF1.3 " + + "switches. Disconnecting switch ...", + m.getVersion(), h.channel.getRemoteAddress()); + h.channel.disconnect(); + return; + } + h.sendHandshakeFeaturesRequestMessage(); + h.setState(WAIT_FEATURES_REPLY); + } + @Override + void processOFFeaturesReply(OFChannelHandler h, OFFeaturesReply m) + throws IOException, SwitchStateException { + illegalMessageReceived(h, m); + } + @Override + void processOFStatisticsReply(OFChannelHandler h, + OFStatsReply m) + throws IOException, SwitchStateException { + illegalMessageReceived(h, m); + } + @Override + void processOFError(OFChannelHandler h, OFErrorMsg m) { + logErrorDisconnect(h, m); + } + + @Override + void processOFPortStatus(OFChannelHandler h, OFPortStatus m) + throws IOException { + unhandledMessageReceived(h, m); + } + }, + + + /** + * We are waiting for a features reply message. Once we receive it, the + * behavior depends on whether this is a 1.0 or 1.3 switch. For 1.0, + * we send a SetConfig request, barrier, and GetConfig request and the + * next state is WAIT_CONFIG_REPLY. For 1.3, we send a Port description + * request and the next state is WAIT_PORT_DESC_REPLY. + */ + WAIT_FEATURES_REPLY(false) { + @Override + void processOFFeaturesReply(OFChannelHandler h, OFFeaturesReply m) + throws IOException { + h.thisdpid = m.getDatapathId().getLong(); + log.debug("Received features reply for switch at {} with dpid {}", + h.getSwitchInfoString(), h.thisdpid); + + h.featuresReply = m; //temp store + if (h.ofVersion == OFVersion.OF_10) { + h.sendHandshakeSetConfig(); + h.setState(WAIT_CONFIG_REPLY); + } else { + //version is 1.3, must get switchport information + h.sendHandshakeOFPortDescRequest(); + h.setState(WAIT_PORT_DESC_REPLY); + } + } + @Override + void processOFStatisticsReply(OFChannelHandler h, + OFStatsReply m) + throws IOException, SwitchStateException { + illegalMessageReceived(h, m); + } + @Override + void processOFError(OFChannelHandler h, OFErrorMsg m) { + logErrorDisconnect(h, m); + } + + @Override + void processOFPortStatus(OFChannelHandler h, OFPortStatus m) + throws IOException { + h.pendingPortStatusMsg.add(m); + } + }, + + /** + * We are waiting for a description of the 1.3 switch ports. + * Once received, we send a SetConfig request + * Next State is WAIT_CONFIG_REPLY + */ + WAIT_PORT_DESC_REPLY(false) { + + @Override + void processOFStatisticsReply(OFChannelHandler h, OFStatsReply m) + throws SwitchStateException { + // Read port description + if (m.getStatsType() != OFStatsType.PORT_DESC) { + log.warn("Expecting port description stats but received stats " + + "type {} from {}. Ignoring ...", m.getStatsType(), + h.channel.getRemoteAddress()); + return; + } + if (m.getFlags().contains(OFStatsReplyFlags.REPLY_MORE)) { + log.debug("Stats reply indicates more stats from sw {} for " + + "port description", + h.getSwitchInfoString()); + h.portDescReplies.add((OFPortDescStatsReply)m); + return; + } + else { + h.portDescReplies.add((OFPortDescStatsReply)m); + } + //h.portDescReply = (OFPortDescStatsReply) m; // temp store + log.info("Received port desc reply for switch at {}", + h.getSwitchInfoString()); + try { + h.sendHandshakeSetConfig(); + } catch (IOException e) { + log.error("Unable to send setConfig after PortDescReply. " + + "Error: {}", e.getMessage()); + } + h.setState(WAIT_CONFIG_REPLY); + } + + @Override + void processOFError(OFChannelHandler h, OFErrorMsg m) + throws IOException, SwitchStateException { + logErrorDisconnect(h, m); + + } + + @Override + void processOFPortStatus(OFChannelHandler h, OFPortStatus m) + throws IOException, SwitchStateException { + h.pendingPortStatusMsg.add(m); + + } + }, + + /** + * We are waiting for a config reply message. Once we receive it + * we send a DescriptionStatsRequest to the switch. + * Next state: WAIT_DESCRIPTION_STAT_REPLY + */ + WAIT_CONFIG_REPLY(false) { + @Override + void processOFGetConfigReply(OFChannelHandler h, OFGetConfigReply m) + throws IOException { + if (m.getMissSendLen() == 0xffff) { + log.trace("Config Reply from switch {} confirms " + + "miss length set to 0xffff", + h.getSwitchInfoString()); + } else { + // FIXME: we can't really deal with switches that don't send + // full packets. Shouldn't we drop the connection here? + log.warn("Config Reply from switch {} has" + + "miss length set to {}", + h.getSwitchInfoString(), + m.getMissSendLen()); + } + h.sendHandshakeDescriptionStatsRequest(); + h.setState(WAIT_DESCRIPTION_STAT_REPLY); + } + + @Override + void processOFBarrierReply(OFChannelHandler h, OFBarrierReply m) { + // do nothing; + } + + @Override + void processOFFeaturesReply(OFChannelHandler h, OFFeaturesReply m) + throws IOException, SwitchStateException { + illegalMessageReceived(h, m); + } + @Override + void processOFStatisticsReply(OFChannelHandler h, + OFStatsReply m) + throws IOException, SwitchStateException { + log.error("Received multipart(stats) message sub-type {}", + m.getStatsType()); + illegalMessageReceived(h, m); + } + + @Override + void processOFError(OFChannelHandler h, OFErrorMsg m) { + logErrorDisconnect(h, m); + } + + @Override + void processOFPortStatus(OFChannelHandler h, OFPortStatus m) + throws IOException { + h.pendingPortStatusMsg.add(m); + } + }, + + + /** + * We are waiting for a OFDescriptionStat message from the switch. + * Once we receive any stat message we try to parse it. If it's not + * a description stats message we disconnect. If its the expected + * description stats message, we: + * - use the switch driver to bind the switch and get an IOFSwitch instance + * - setup the IOFSwitch instance + * - add switch controller and send the initial role + * request to the switch. + * Next state: WAIT_INITIAL_ROLE + * In the typical case, where switches support role request messages + * the next state is where we expect the role reply message. + * In the special case that where the switch does not support any kind + * of role request messages, we don't send a role message, but we do + * request mastership from the registry service. This controller + * should become master once we hear back from the registry service. + * All following states will have a h.sw instance! + */ + WAIT_DESCRIPTION_STAT_REPLY(false) { + @Override + void processOFStatisticsReply(OFChannelHandler h, OFStatsReply m) + throws SwitchStateException { + // Read description, if it has been updated + if (m.getStatsType() != OFStatsType.DESC) { + log.warn("Expecting Description stats but received stats " + + "type {} from {}. Ignoring ...", m.getStatsType(), + h.channel.getRemoteAddress()); + return; + } + OFDescStatsReply drep = (OFDescStatsReply) m; + log.info("Received switch description reply {} from switch at {}", + drep, h.channel.getRemoteAddress()); + // Here is where we differentiate between different kinds of switches + h.sw = h.controller.getOFSwitchInstance(h.thisdpid, drep, h.ofVersion); + + h.sw.setOFVersion(h.ofVersion); + h.sw.setFeaturesReply(h.featuresReply); + //h.sw.setPortDescReply(h.portDescReply); + h.sw.setPortDescReplies(h.portDescReplies); + h.sw.setConnected(true); + h.sw.setChannel(h.channel); +// boolean success = h.sw.connectSwitch(); +// +// if (!success) { +// disconnectDuplicate(h); +// return; +// } + // set switch information + + + + log.debug("Switch {} bound to class {}, description {}", + h.sw, h.sw.getClass(), drep); + //Put switch in EQUAL mode until we hear back from the global registry + //log.debug("Setting new switch {} to EQUAL and sending Role request", + // h.sw.getStringId()); + //h.sw.activateEqualSwitch(); + //h.setSwitchRole(RoleState.EQUAL); + + h.sw.startDriverHandshake(); + if (h.sw.isDriverHandshakeComplete()) { + if (!h.sw.connectSwitch()) { + disconnectDuplicate(h); + } + handlePendingPortStatusMessages(h); + h.setState(ACTIVE); + } else { + h.setState(WAIT_SWITCH_DRIVER_SUB_HANDSHAKE); + } + + } + + @Override + void processOFError(OFChannelHandler h, OFErrorMsg m) { + logErrorDisconnect(h, m); + } + + @Override + void processOFFeaturesReply(OFChannelHandler h, OFFeaturesReply m) + throws IOException, SwitchStateException { + illegalMessageReceived(h, m); + } + + @Override + void processOFPortStatus(OFChannelHandler h, OFPortStatus m) + throws IOException { + h.pendingPortStatusMsg.add(m); + } + }, + + + /** + * We are waiting for the respective switch driver to complete its + * configuration. Notice that we do not consider this to be part of the main + * switch-controller handshake. But we do consider it as a step that comes + * before we declare the switch as available to the controller. + * Next State: depends on the role of this controller for this switch - either + * MASTER or EQUAL. + */ + WAIT_SWITCH_DRIVER_SUB_HANDSHAKE(true) { + + @Override + void processOFError(OFChannelHandler h, OFErrorMsg m) + throws IOException { + // will never be called. We override processOFMessage + } + + + + @Override + void processOFMessage(OFChannelHandler h, OFMessage m) + throws IOException, SwitchStateException { + + if (h.sw.isDriverHandshakeComplete()) { + moveToActive(h); + h.state.processOFMessage(h, m); + return; + + } + + if (m.getType() == OFType.ECHO_REQUEST) { + processOFEchoRequest(h, (OFEchoRequest) m); + } else if (m.getType() == OFType.ECHO_REPLY) { + processOFEchoReply(h, (OFEchoReply) m); + } else if (m.getType() == OFType.ROLE_REPLY) { + h.sw.handleRole(m); + } else if (m.getType() == OFType.ERROR) { + if (!h.sw.handleRoleError((OFErrorMsg)m)) { + h.sw.processDriverHandshakeMessage(m); + if (h.sw.isDriverHandshakeComplete()) { + moveToActive(h); + } + } + } else { + if (m.getType() == OFType.EXPERIMENTER && + ((OFExperimenter) m).getExperimenter() == + RoleManager.NICIRA_EXPERIMENTER) { + h.sw.handleNiciraRole(m); + } else { + h.sw.processDriverHandshakeMessage(m); + if (h.sw.isDriverHandshakeComplete()) { + moveToActive(h); + } + } + } + } + + @Override + void processOFPortStatus(OFChannelHandler h, OFPortStatus m) + throws IOException, SwitchStateException { + h.pendingPortStatusMsg.add(m); + } + + private void moveToActive(OFChannelHandler h) { + boolean success = h.sw.connectSwitch(); + handlePendingPortStatusMessages(h); + h.setState(ACTIVE); + if (!success) { + disconnectDuplicate(h); + } + } + + }, + + + /** + * This controller is in MASTER role for this switch. We enter this state + * after requesting and winning control from the global registry. + * The main handshake as well as the switch-driver sub-handshake + * is complete at this point. + * // XXX S reconsider below + * In the (near) future we may deterministically assign controllers to + * switches at startup. + * We only leave this state if the switch disconnects or + * if we send a role request for SLAVE /and/ receive the role reply for + * SLAVE. + */ + ACTIVE(true) { + @Override + void processOFError(OFChannelHandler h, OFErrorMsg m) + throws IOException, SwitchStateException { + // if we get here, then the error message is for something else + if (m.getErrType() == OFErrorType.BAD_REQUEST && + ((OFBadRequestErrorMsg) m).getCode() == + OFBadRequestCode.EPERM) { + // We are the master controller and the switch returned + // a permission error. This is a likely indicator that + // the switch thinks we are slave. Reassert our + // role + // FIXME: this could be really bad during role transitions + // if two controllers are master (even if its only for + // a brief period). We might need to see if these errors + // persist before we reassert + + h.sw.reassertRole(); + } else if (m.getErrType() == OFErrorType.FLOW_MOD_FAILED && + ((OFFlowModFailedErrorMsg) m).getCode() == + OFFlowModFailedCode.ALL_TABLES_FULL) { + h.sw.setTableFull(true); + } else { + logError(h, m); + } + h.dispatchMessage(m); + } + + @Override + void processOFStatisticsReply(OFChannelHandler h, + OFStatsReply m) { + if (m.getStatsType().equals(OFStatsType.PORT_DESC)) { + h.sw.setPortDescReply((OFPortDescStatsReply) m); + } + h.dispatchMessage(m); + } + + @Override + void processOFExperimenter(OFChannelHandler h, OFExperimenter m) + throws SwitchStateException { + h.sw.handleNiciraRole(m); + } + + @Override + void processOFRoleReply(OFChannelHandler h, OFRoleReply m) + throws SwitchStateException { + h.sw.handleRole(m); + } + + @Override + void processOFPortStatus(OFChannelHandler h, OFPortStatus m) + throws SwitchStateException { + handlePortStatusMessage(h, m, true); + //h.dispatchMessage(m); + } + + @Override + void processOFPacketIn(OFChannelHandler h, OFPacketIn m) { +// OFPacketOut out = +// h.sw.factory().buildPacketOut() +// .setXid(m.getXid()) +// .setBufferId(m.getBufferId()).build(); +// h.sw.sendMsg(out); + h.dispatchMessage(m); + } + + @Override + void processOFFlowRemoved(OFChannelHandler h, + OFFlowRemoved m) { + h.dispatchMessage(m); + } + + @Override + void processOFBarrierReply(OFChannelHandler h, OFBarrierReply m) { + h.dispatchMessage(m); + } + + @Override + void processOFFeaturesReply(OFChannelHandler h, OFFeaturesReply m) { + h.sw.setFeaturesReply(m); + h.dispatchMessage(m); + } + + }; + + private final boolean handshakeComplete; + ChannelState(boolean handshakeComplete) { + this.handshakeComplete = handshakeComplete; + } + + /** + * Is this a state in which the handshake has completed? + * @return true if the handshake is complete + */ + public boolean isHandshakeComplete() { + return handshakeComplete; + } + + /** + * Get a string specifying the switch connection, state, and + * message received. To be used as message for SwitchStateException + * or log messages + * @param h The channel handler (to get switch information_ + * @param m The OFMessage that has just been received + * @param details A string giving more details about the exact nature + * of the problem. + * @return display string + */ + // needs to be protected because enum members are actually subclasses + protected String getSwitchStateMessage(OFChannelHandler h, + OFMessage m, + String details) { + return String.format("Switch: [%s], State: [%s], received: [%s]" + + ", details: %s", + h.getSwitchInfoString(), + this.toString(), + m.getType().toString(), + details); + } + + /** + * We have an OFMessage we didn't expect given the current state and + * we want to treat this as an error. + * We currently throw an exception that will terminate the connection + * However, we could be more forgiving + * @param h the channel handler that received the message + * @param m the message + * @throws SwitchStateException we always throw the exception + */ + // needs to be protected because enum members are actually subclasses + protected void illegalMessageReceived(OFChannelHandler h, OFMessage m) + throws SwitchStateException { + String msg = getSwitchStateMessage(h, m, + "Switch should never send this message in the current state"); + throw new SwitchStateException(msg); + + } + + /** + * We have an OFMessage we didn't expect given the current state and + * we want to ignore the message. + * @param h the channel handler the received the message + * @param m the message + */ + protected void unhandledMessageReceived(OFChannelHandler h, + OFMessage m) { + if (log.isDebugEnabled()) { + String msg = getSwitchStateMessage(h, m, + "Ignoring unexpected message"); + log.debug(msg); + } + } + + /** + * Log an OpenFlow error message from a switch. + * @param h The switch that sent the error + * @param error The error message + */ + protected void logError(OFChannelHandler h, OFErrorMsg error) { + log.error("{} from switch {} in state {}", + error, + h.getSwitchInfoString(), + this.toString()); + } + + /** + * Log an OpenFlow error message from a switch and disconnect the + * channel. + * + * @param h the IO channel for this switch. + * @param error The error message + */ + protected void logErrorDisconnect(OFChannelHandler h, OFErrorMsg error) { + logError(h, error); + h.channel.disconnect(); + } + + /** + * log an error message for a duplicate dpid and disconnect this channel. + * @param h the IO channel for this switch. + */ + protected void disconnectDuplicate(OFChannelHandler h) { + log.error("Duplicated dpid or incompleted cleanup - " + + "disconnecting channel {}", h.getSwitchInfoString()); + h.duplicateDpidFound = Boolean.TRUE; + h.channel.disconnect(); + } + + + + /** + * Handles all pending port status messages before a switch is declared + * activated in MASTER or EQUAL role. Note that since this handling + * precedes the activation (and therefore notification to IOFSwitchListerners) + * the changes to ports will already be visible once the switch is + * activated. As a result, no notifications are sent out for these + * pending portStatus messages. + * + * @param h the channel handler that received the message + */ + protected void handlePendingPortStatusMessages(OFChannelHandler h) { + try { + handlePendingPortStatusMessages(h, 0); + } catch (SwitchStateException e) { + log.error(e.getMessage()); + } + } + + private void handlePendingPortStatusMessages(OFChannelHandler h, int index) + throws SwitchStateException { + if (h.sw == null) { + String msg = "State machine error: switch is null. Should never " + + "happen"; + throw new SwitchStateException(msg); + } + log.info("Processing {} pending port status messages for {}", + h.pendingPortStatusMsg.size(), h.sw.getStringId()); + + ArrayList<OFPortStatus> temp = new ArrayList<OFPortStatus>(); + for (OFPortStatus ps: h.pendingPortStatusMsg) { + temp.add(ps); + handlePortStatusMessage(h, ps, false); + } + // expensive but ok - we don't expect too many port-status messages + // note that we cannot use clear(), because of the reasons below + h.pendingPortStatusMsg.removeAll(temp); + temp.clear(); + // the iterator above takes a snapshot of the list - so while we were + // dealing with the pending port-status messages, we could have received + // newer ones. Handle them recursively, but break the recursion after + // five steps to avoid an attack. + if (!h.pendingPortStatusMsg.isEmpty() && ++index < 5) { + handlePendingPortStatusMessages(h, index); + } + } + + /** + * Handle a port status message. + * + * Handle a port status message by updating the port maps in the + * IOFSwitch instance and notifying Controller about the change so + * it can dispatch a switch update. + * + * @param h The OFChannelHhandler that received the message + * @param m The PortStatus message we received + * @param doNotify if true switch port changed events will be + * dispatched + * @throws SwitchStateException if the switch is not bound to the channel + * + */ + protected void handlePortStatusMessage(OFChannelHandler h, OFPortStatus m, + boolean doNotify) throws SwitchStateException { + if (h.sw == null) { + String msg = getSwitchStateMessage(h, m, + "State machine error: switch is null. Should never " + + "happen"); + throw new SwitchStateException(msg); + } + + h.sw.handleMessage(m); + } + + + /** + * Process an OF message received on the channel and + * update state accordingly. + * + * The main "event" of the state machine. Process the received message, + * send follow up message if required and update state if required. + * + * Switches on the message type and calls more specific event handlers + * for each individual OF message type. If we receive a message that + * is supposed to be sent from a controller to a switch we throw + * a SwitchStateExeption. + * + * The more specific handlers can also throw SwitchStateExceptions + * + * @param h The OFChannelHandler that received the message + * @param m The message we received. + * @throws SwitchStateException if the switch is not bound to the channel + * @throws IOException if unable to send message back to the switch + */ + void processOFMessage(OFChannelHandler h, OFMessage m) + throws IOException, SwitchStateException { + switch(m.getType()) { + case HELLO: + processOFHello(h, (OFHello) m); + break; + case BARRIER_REPLY: + processOFBarrierReply(h, (OFBarrierReply) m); + break; + case ECHO_REPLY: + processOFEchoReply(h, (OFEchoReply) m); + break; + case ECHO_REQUEST: + processOFEchoRequest(h, (OFEchoRequest) m); + break; + case ERROR: + processOFError(h, (OFErrorMsg) m); + break; + case FEATURES_REPLY: + processOFFeaturesReply(h, (OFFeaturesReply) m); + break; + case FLOW_REMOVED: + processOFFlowRemoved(h, (OFFlowRemoved) m); + break; + case GET_CONFIG_REPLY: + processOFGetConfigReply(h, (OFGetConfigReply) m); + break; + case PACKET_IN: + processOFPacketIn(h, (OFPacketIn) m); + break; + case PORT_STATUS: + processOFPortStatus(h, (OFPortStatus) m); + break; + case QUEUE_GET_CONFIG_REPLY: + processOFQueueGetConfigReply(h, (OFQueueGetConfigReply) m); + break; + case STATS_REPLY: // multipart_reply in 1.3 + processOFStatisticsReply(h, (OFStatsReply) m); + break; + case EXPERIMENTER: + processOFExperimenter(h, (OFExperimenter) m); + break; + case ROLE_REPLY: + processOFRoleReply(h, (OFRoleReply) m); + break; + case GET_ASYNC_REPLY: + processOFGetAsyncReply(h, (OFAsyncGetReply) m); + break; + + // The following messages are sent to switches. The controller + // should never receive them + case SET_CONFIG: + case GET_CONFIG_REQUEST: + case PACKET_OUT: + case PORT_MOD: + case QUEUE_GET_CONFIG_REQUEST: + case BARRIER_REQUEST: + case STATS_REQUEST: // multipart request in 1.3 + case FEATURES_REQUEST: + case FLOW_MOD: + case GROUP_MOD: + case TABLE_MOD: + case GET_ASYNC_REQUEST: + case SET_ASYNC: + case METER_MOD: + default: + illegalMessageReceived(h, m); + break; + } + } + + /*----------------------------------------------------------------- + * Default implementation for message handlers in any state. + * + * Individual states must override these if they want a behavior + * that differs from the default. + * + * In general, these handlers simply ignore the message and do + * nothing. + * + * There are some exceptions though, since some messages really + * are handled the same way in every state (e.g., ECHO_REQUST) or + * that are only valid in a single state (e.g., HELLO, GET_CONFIG_REPLY + -----------------------------------------------------------------*/ + + void processOFHello(OFChannelHandler h, OFHello m) + throws IOException, SwitchStateException { + // we only expect hello in the WAIT_HELLO state + log.warn("Received Hello outside WAIT_HELLO state; switch {} is not complaint.", + h.channel.getRemoteAddress()); + } + + void processOFBarrierReply(OFChannelHandler h, OFBarrierReply m) + throws IOException { + // Silently ignore. + } + + void processOFEchoRequest(OFChannelHandler h, OFEchoRequest m) + throws IOException { + if (h.ofVersion == null) { + log.error("No OF version set for {}. Not sending Echo REPLY", + h.channel.getRemoteAddress()); + return; + } + OFFactory factory = (h.ofVersion == OFVersion.OF_13) ? + h.controller.getOFMessageFactory13() : h.controller.getOFMessageFactory10(); + OFEchoReply reply = factory + .buildEchoReply() + .setXid(m.getXid()) + .setData(m.getData()) + .build(); + h.channel.write(Collections.singletonList(reply)); + } + + void processOFEchoReply(OFChannelHandler h, OFEchoReply m) + throws IOException { + // Do nothing with EchoReplies !! + } + + // no default implementation for OFError + // every state must override it + abstract void processOFError(OFChannelHandler h, OFErrorMsg m) + throws IOException, SwitchStateException; + + + void processOFFeaturesReply(OFChannelHandler h, OFFeaturesReply m) + throws IOException, SwitchStateException { + unhandledMessageReceived(h, m); + } + + void processOFFlowRemoved(OFChannelHandler h, OFFlowRemoved m) + throws IOException { + unhandledMessageReceived(h, m); + } + + void processOFGetConfigReply(OFChannelHandler h, OFGetConfigReply m) + throws IOException, SwitchStateException { + // we only expect config replies in the WAIT_CONFIG_REPLY state + illegalMessageReceived(h, m); + } + + void processOFPacketIn(OFChannelHandler h, OFPacketIn m) + throws IOException { + unhandledMessageReceived(h, m); + } + + // no default implementation. Every state needs to handle it. + abstract void processOFPortStatus(OFChannelHandler h, OFPortStatus m) + throws IOException, SwitchStateException; + + void processOFQueueGetConfigReply(OFChannelHandler h, + OFQueueGetConfigReply m) + throws IOException { + unhandledMessageReceived(h, m); + } + + void processOFStatisticsReply(OFChannelHandler h, OFStatsReply m) + throws IOException, SwitchStateException { + unhandledMessageReceived(h, m); + } + + void processOFExperimenter(OFChannelHandler h, OFExperimenter m) + throws IOException, SwitchStateException { + // TODO: it might make sense to parse the vendor message here + // into the known vendor messages we support and then call more + // specific event handlers + unhandledMessageReceived(h, m); + } + + void processOFRoleReply(OFChannelHandler h, OFRoleReply m) + throws SwitchStateException, IOException { + unhandledMessageReceived(h, m); + } + + void processOFGetAsyncReply(OFChannelHandler h, + OFAsyncGetReply m) { + unhandledMessageReceived(h, m); + } + + } + + + + //************************* + // Channel handler methods + //************************* + + @Override + public void channelConnected(ChannelHandlerContext ctx, + ChannelStateEvent e) throws Exception { + channel = e.getChannel(); + log.info("New switch connection from {}", + channel.getRemoteAddress()); + /* + hack to wait for the switch to tell us what it's + max version is. This is not spec compliant and should + be removed as soon as switches behave better. + */ + //sendHandshakeHelloMessage(); + setState(ChannelState.WAIT_HELLO); + } + + @Override + public void channelDisconnected(ChannelHandlerContext ctx, + ChannelStateEvent e) throws Exception { + log.info("Switch disconnected callback for sw:{}. Cleaning up ...", + getSwitchInfoString()); + if (thisdpid != 0) { + if (!duplicateDpidFound) { + // if the disconnected switch (on this ChannelHandler) + // was not one with a duplicate-dpid, it is safe to remove all + // state for it at the controller. Notice that if the disconnected + // switch was a duplicate-dpid, calling the method below would clear + // all state for the original switch (with the same dpid), + // which we obviously don't want. + log.info("{}:removal called", getSwitchInfoString()); + if (sw != null) { + sw.removeConnectedSwitch(); + } + } else { + // A duplicate was disconnected on this ChannelHandler, + // this is the same switch reconnecting, but the original state was + // not cleaned up - XXX check liveness of original ChannelHandler + log.info("{}:duplicate found", getSwitchInfoString()); + duplicateDpidFound = Boolean.FALSE; + } + } else { + log.warn("no dpid in channelHandler registered for " + + "disconnected switch {}", getSwitchInfoString()); + } + } + + @Override + public void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e) + throws Exception { + if (e.getCause() instanceof ReadTimeoutException) { + // switch timeout + log.error("Disconnecting switch {} due to read timeout", + getSwitchInfoString()); + ctx.getChannel().close(); + } else if (e.getCause() instanceof HandshakeTimeoutException) { + log.error("Disconnecting switch {}: failed to complete handshake", + getSwitchInfoString()); + ctx.getChannel().close(); + } else if (e.getCause() instanceof ClosedChannelException) { + log.debug("Channel for sw {} already closed", getSwitchInfoString()); + } else if (e.getCause() instanceof IOException) { + if (!e.getCause().getMessage().equals(RESET_BY_PEER) && + !e.getCause().getMessage().equals(BROKEN_PIPE)) { + log.error("Disconnecting switch {} due to IO Error: {}", + getSwitchInfoString(), e.getCause().getMessage()); + if (log.isDebugEnabled()) { + // still print stack trace if debug is enabled + log.debug("StackTrace for previous Exception: ", e.getCause()); + } + } + ctx.getChannel().close(); + } else if (e.getCause() instanceof SwitchStateException) { + log.error("Disconnecting switch {} due to switch state error: {}", + getSwitchInfoString(), e.getCause().getMessage()); + if (log.isDebugEnabled()) { + // still print stack trace if debug is enabled + log.debug("StackTrace for previous Exception: ", e.getCause()); + } + ctx.getChannel().close(); + } else if (e.getCause() instanceof OFParseError) { + log.error("Disconnecting switch " + + getSwitchInfoString() + + " due to message parse failure", + e.getCause()); + ctx.getChannel().close(); + } else if (e.getCause() instanceof RejectedExecutionException) { + log.warn("Could not process message: queue full"); + } else { + log.error("Error while processing message from switch " + + getSwitchInfoString() + + "state " + this.state, e.getCause()); + ctx.getChannel().close(); + } + } + + @Override + public String toString() { + return getSwitchInfoString(); + } + + @Override + public void channelIdle(ChannelHandlerContext ctx, IdleStateEvent e) + throws Exception { + OFFactory factory = (ofVersion == OFVersion.OF_13) ? factory13 : factory10; + OFMessage m = factory.buildEchoRequest().build(); + log.debug("Sending Echo Request on idle channel: {}", + e.getChannel().getPipeline().getLast().toString()); + e.getChannel().write(Collections.singletonList(m)); + // XXX S some problems here -- echo request has no transaction id, and + // echo reply is not correlated to the echo request. + } + + @Override + public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) + throws Exception { + if (e.getMessage() instanceof List) { + @SuppressWarnings("unchecked") + List<OFMessage> msglist = (List<OFMessage>) e.getMessage(); + + + for (OFMessage ofm : msglist) { + // Do the actual packet processing + state.processOFMessage(this, ofm); + } + } else { + state.processOFMessage(this, (OFMessage) e.getMessage()); + } + } + + + + //************************* + // Channel utility methods + //************************* + + /** + * Is this a state in which the handshake has completed? + * @return true if the handshake is complete + */ + public boolean isHandshakeComplete() { + return this.state.isHandshakeComplete(); + } + + private void dispatchMessage(OFMessage m) { + sw.handleMessage(m); + } + + /** + * Return a string describing this switch based on the already available + * information (DPID and/or remote socket). + * @return display string + */ + private String getSwitchInfoString() { + if (sw != null) { + return sw.toString(); + } + String channelString; + if (channel == null || channel.getRemoteAddress() == null) { + channelString = "?"; + } else { + channelString = channel.getRemoteAddress().toString(); + } + String dpidString; + if (featuresReply == null) { + dpidString = "?"; + } else { + dpidString = featuresReply.getDatapathId().toString(); + } + return String.format("[%s DPID[%s]]", channelString, dpidString); + } + + /** + * Update the channels state. Only called from the state machine. + * TODO: enforce restricted state transitions + * @param state + */ + private void setState(ChannelState state) { + this.state = state; + } + + /** + * Send hello message to the switch using the handshake transactions ids. + * @throws IOException + */ + private void sendHandshakeHelloMessage() throws IOException { + // The OF protocol requires us to start things off by sending the highest + // version of the protocol supported. + + // bitmap represents OF1.0 (ofp_version=0x01) and OF1.3 (ofp_version=0x04) + // see Sec. 7.5.1 of the OF1.3.4 spec + U32 bitmap = U32.ofRaw(0x00000012); + OFHelloElem hem = factory13.buildHelloElemVersionbitmap() + .setBitmaps(Collections.singletonList(bitmap)) + .build(); + OFMessage.Builder mb = factory13.buildHello() + .setXid(this.handshakeTransactionIds--) + .setElements(Collections.singletonList(hem)); + log.info("Sending OF_13 Hello to {}", channel.getRemoteAddress()); + channel.write(Collections.singletonList(mb.build())); + } + + /** + * Send featuresRequest msg to the switch using the handshake transactions ids. + * @throws IOException + */ + private void sendHandshakeFeaturesRequestMessage() throws IOException { + OFFactory factory = (ofVersion == OFVersion.OF_13) ? factory13 : factory10; + OFMessage m = factory.buildFeaturesRequest() + .setXid(this.handshakeTransactionIds--) + .build(); + channel.write(Collections.singletonList(m)); + } + + /** + * Send the configuration requests to tell the switch we want full + * packets. + * @throws IOException + */ + private void sendHandshakeSetConfig() throws IOException { + OFFactory factory = (ofVersion == OFVersion.OF_13) ? factory13 : factory10; + //log.debug("Sending CONFIG_REQUEST to {}", channel.getRemoteAddress()); + List<OFMessage> msglist = new ArrayList<OFMessage>(3); + + // Ensure we receive the full packet via PacketIn + // FIXME: We don't set the reassembly flags. + // Only send config to switches to send full packets, if they have a buffer. + // Saves a packet & OFSetConfig can't be handled by certain switches. + if(this.featuresReply.getNBuffers() > 0) { + OFSetConfig sc = factory + .buildSetConfig() + .setMissSendLen((short) 0xffff) + .setXid(this.handshakeTransactionIds--) + .build(); + msglist.add(sc); + } + + // Barrier + OFBarrierRequest br = factory + .buildBarrierRequest() + .setXid(this.handshakeTransactionIds--) + .build(); + msglist.add(br); + + // Verify (need barrier?) + OFGetConfigRequest gcr = factory + .buildGetConfigRequest() + .setXid(this.handshakeTransactionIds--) + .build(); + msglist.add(gcr); + channel.write(msglist); + } + + /** + * send a description state request. + * @throws IOException + */ + private void sendHandshakeDescriptionStatsRequest() throws IOException { + // Get Description to set switch-specific flags + OFFactory factory = (ofVersion == OFVersion.OF_13) ? factory13 : factory10; + OFDescStatsRequest dreq = factory + .buildDescStatsRequest() + .setXid(handshakeTransactionIds--) + .build(); + channel.write(Collections.singletonList(dreq)); + } + + private void sendHandshakeOFPortDescRequest() throws IOException { + // Get port description for 1.3 switch + OFPortDescStatsRequest preq = factory13 + .buildPortDescStatsRequest() + .setXid(handshakeTransactionIds--) + .build(); + channel.write(Collections.singletonList(preq)); + } + + ChannelState getStateForTesting() { + return state; + } + +} diff --git a/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/OFMessageDecoder.java b/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/OFMessageDecoder.java new file mode 100644 index 00000000..f52d27e5 --- /dev/null +++ b/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/OFMessageDecoder.java @@ -0,0 +1,55 @@ +/* + * Copyright 2014 Open Networking Laboratory + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.onosproject.openflow.controller.impl; + + +import org.jboss.netty.buffer.ChannelBuffer; +import org.jboss.netty.channel.Channel; +import org.jboss.netty.channel.ChannelHandlerContext; +import org.jboss.netty.handler.codec.frame.FrameDecoder; +import org.projectfloodlight.openflow.protocol.OFFactories; +import org.projectfloodlight.openflow.protocol.OFMessage; +import org.projectfloodlight.openflow.protocol.OFMessageReader; + +/** + * Decode an openflow message from a Channel, for use in a netty pipeline. + */ +public class OFMessageDecoder extends FrameDecoder { + + @Override + protected Object decode(ChannelHandlerContext ctx, Channel channel, + ChannelBuffer buffer) throws Exception { + if (!channel.isConnected()) { + // In testing, I see decode being called AFTER decode last. + // This check avoids that from reading corrupted frames + return null; + } + + // Note that a single call to decode results in reading a single + // OFMessage from the channel buffer, which is passed on to, and processed + // by, the controller (in OFChannelHandler). + // This is different from earlier behavior (with the original openflowj), + // where we parsed all the messages in the buffer, before passing on + // a list of the parsed messages to the controller. + // The performance *may or may not* not be as good as before. + OFMessageReader<OFMessage> reader = OFFactories.getGenericReader(); + OFMessage message = reader.readFrom(buffer); + + return message; + } + +} diff --git a/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/OFMessageEncoder.java b/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/OFMessageEncoder.java new file mode 100644 index 00000000..4c1b16fe --- /dev/null +++ b/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/OFMessageEncoder.java @@ -0,0 +1,59 @@ +/* + * Copyright 2014 Open Networking Laboratory + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.onosproject.openflow.controller.impl; + +import java.util.List; + +import org.jboss.netty.buffer.ChannelBuffer; +import org.jboss.netty.buffer.ChannelBuffers; +import org.jboss.netty.channel.Channel; +import org.jboss.netty.channel.ChannelHandlerContext; +import org.jboss.netty.handler.codec.oneone.OneToOneEncoder; +import org.projectfloodlight.openflow.protocol.OFMessage; + +/** + * Encode an openflow message for output into a ChannelBuffer, for use in a + * netty pipeline. + */ +public class OFMessageEncoder extends OneToOneEncoder { + + @Override + protected Object encode(ChannelHandlerContext ctx, Channel channel, + Object msg) throws Exception { + if (!(msg instanceof List)) { + return msg; + } + + @SuppressWarnings("unchecked") + List<OFMessage> msglist = (List<OFMessage>) msg; + /* XXX S can't get length of OFMessage in loxigen's openflowj?? + int size = 0; + for (OFMessage ofm : msglist) { + size += ofm.getLengthU(); + }*/ + + ChannelBuffer buf = ChannelBuffers.dynamicBuffer(); + + for (OFMessage ofm : msglist) { + if (ofm != null) { + ofm.writeTo(buf); + } + } + return buf; + } + +} diff --git a/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/OpenFlowControllerImpl.java b/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/OpenFlowControllerImpl.java new file mode 100644 index 00000000..b97c3362 --- /dev/null +++ b/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/OpenFlowControllerImpl.java @@ -0,0 +1,633 @@ +/* + * Copyright 2014-2015 Open Networking Laboratory + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.onosproject.openflow.controller.impl; + +import com.google.common.collect.ArrayListMultimap; +import com.google.common.collect.Lists; +import com.google.common.collect.Multimap; +import org.apache.felix.scr.annotations.Activate; +import org.apache.felix.scr.annotations.Component; +import org.apache.felix.scr.annotations.Deactivate; +import org.apache.felix.scr.annotations.Modified; +import org.apache.felix.scr.annotations.Property; +import org.apache.felix.scr.annotations.Reference; +import org.apache.felix.scr.annotations.ReferenceCardinality; +import org.apache.felix.scr.annotations.Service; +import org.onosproject.cfg.ComponentConfigService; +import org.onosproject.net.driver.DefaultDriverProviderService; +import org.onosproject.net.driver.DriverService; +import org.onosproject.openflow.controller.DefaultOpenFlowPacketContext; +import org.onosproject.openflow.controller.Dpid; +import org.onosproject.openflow.controller.OpenFlowController; +import org.onosproject.openflow.controller.OpenFlowEventListener; +import org.onosproject.openflow.controller.OpenFlowPacketContext; +import org.onosproject.openflow.controller.OpenFlowSwitch; +import org.onosproject.openflow.controller.OpenFlowSwitchListener; +import org.onosproject.openflow.controller.PacketListener; +import org.onosproject.openflow.controller.RoleState; +import org.onosproject.openflow.controller.driver.OpenFlowAgent; +import org.osgi.service.component.ComponentContext; +import org.projectfloodlight.openflow.protocol.OFCalientFlowStatsEntry; +import org.projectfloodlight.openflow.protocol.OFCalientFlowStatsReply; +import org.projectfloodlight.openflow.protocol.OFCircuitPortStatus; +import org.projectfloodlight.openflow.protocol.OFExperimenter; +import org.projectfloodlight.openflow.protocol.OFFactories; +import org.projectfloodlight.openflow.protocol.OFFlowStatsEntry; +import org.projectfloodlight.openflow.protocol.OFFlowStatsReply; +import org.projectfloodlight.openflow.protocol.OFTableStatsEntry; +import org.projectfloodlight.openflow.protocol.OFTableStatsReply; +import org.projectfloodlight.openflow.protocol.OFGroupDescStatsEntry; +import org.projectfloodlight.openflow.protocol.OFGroupDescStatsReply; +import org.projectfloodlight.openflow.protocol.OFGroupStatsEntry; +import org.projectfloodlight.openflow.protocol.OFGroupStatsReply; +import org.projectfloodlight.openflow.protocol.OFMessage; +import org.projectfloodlight.openflow.protocol.OFPacketIn; +import org.projectfloodlight.openflow.protocol.OFPortDesc; +import org.projectfloodlight.openflow.protocol.OFPortStatsEntry; +import org.projectfloodlight.openflow.protocol.OFPortStatsReply; +import org.projectfloodlight.openflow.protocol.OFPortStatus; +import org.projectfloodlight.openflow.protocol.OFStatsReply; +import org.projectfloodlight.openflow.protocol.OFStatsReplyFlags; +import org.projectfloodlight.openflow.protocol.action.OFActionOutput; +import org.projectfloodlight.openflow.protocol.instruction.OFInstruction; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.util.Collection; +import java.util.Collections; +import java.util.LinkedList; +import java.util.List; +import java.util.Set; +import java.util.concurrent.ConcurrentHashMap; +import java.util.concurrent.CopyOnWriteArraySet; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.Executors; +import java.util.concurrent.locks.Lock; +import java.util.concurrent.locks.ReentrantLock; + +import static org.onlab.util.Tools.groupedThreads; + +@Component(immediate = true) +@Service +public class OpenFlowControllerImpl implements OpenFlowController { + private static final String DEFAULT_OFPORT = "6633,6653"; + private static final int DEFAULT_WORKER_THREADS = 16; + + private static final Logger log = + LoggerFactory.getLogger(OpenFlowControllerImpl.class); + + @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) + protected DriverService driverService; + + // References exists merely for sequencing purpose to assure drivers are loaded + @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) + protected DefaultDriverProviderService defaultDriverProviderService; + + @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) + protected ComponentConfigService cfgService; + + @Property(name = "openflowPorts", value = DEFAULT_OFPORT, + label = "Port numbers (comma separated) used by OpenFlow protocol; default is 6633,6653") + private String openflowPorts = DEFAULT_OFPORT; + + @Property(name = "workerThreads", intValue = DEFAULT_WORKER_THREADS, + label = "Number of controller worker threads; default is 16") + private int workerThreads = DEFAULT_WORKER_THREADS; + + protected ExecutorService executorMsgs = + Executors.newFixedThreadPool(32, groupedThreads("onos/of", "event-stats-%d")); + + private final ExecutorService executorBarrier = + Executors.newFixedThreadPool(4, groupedThreads("onos/of", "event-barrier-%d")); + + protected ConcurrentHashMap<Dpid, OpenFlowSwitch> connectedSwitches = + new ConcurrentHashMap<>(); + protected ConcurrentHashMap<Dpid, OpenFlowSwitch> activeMasterSwitches = + new ConcurrentHashMap<>(); + protected ConcurrentHashMap<Dpid, OpenFlowSwitch> activeEqualSwitches = + new ConcurrentHashMap<>(); + + protected OpenFlowSwitchAgent agent = new OpenFlowSwitchAgent(); + protected Set<OpenFlowSwitchListener> ofSwitchListener = new CopyOnWriteArraySet<>(); + + protected Multimap<Integer, PacketListener> ofPacketListener = + ArrayListMultimap.create(); + + protected Set<OpenFlowEventListener> ofEventListener = new CopyOnWriteArraySet<>(); + + protected Multimap<Dpid, OFFlowStatsEntry> fullFlowStats = + ArrayListMultimap.create(); + + protected Multimap<Dpid, OFTableStatsEntry> fullTableStats = + ArrayListMultimap.create(); + + protected Multimap<Dpid, OFGroupStatsEntry> fullGroupStats = + ArrayListMultimap.create(); + + protected Multimap<Dpid, OFGroupDescStatsEntry> fullGroupDescStats = + ArrayListMultimap.create(); + + protected Multimap<Dpid, OFPortStatsEntry> fullPortStats = + ArrayListMultimap.create(); + + private final Controller ctrl = new Controller(); + + @Activate + public void activate(ComponentContext context) { + cfgService.registerProperties(getClass()); + ctrl.setConfigParams(context.getProperties()); + ctrl.start(agent, driverService); + } + + @Deactivate + public void deactivate() { + cfgService.unregisterProperties(getClass(), false); + ctrl.stop(); + } + + @Modified + public void modified(ComponentContext context) { + ctrl.stop(); + ctrl.setConfigParams(context.getProperties()); + ctrl.start(agent, driverService); + } + + @Override + public Iterable<OpenFlowSwitch> getSwitches() { + return connectedSwitches.values(); + } + + @Override + public Iterable<OpenFlowSwitch> getMasterSwitches() { + return activeMasterSwitches.values(); + } + + @Override + public Iterable<OpenFlowSwitch> getEqualSwitches() { + return activeEqualSwitches.values(); + } + + @Override + public OpenFlowSwitch getSwitch(Dpid dpid) { + return connectedSwitches.get(dpid); + } + + @Override + public OpenFlowSwitch getMasterSwitch(Dpid dpid) { + return activeMasterSwitches.get(dpid); + } + + @Override + public OpenFlowSwitch getEqualSwitch(Dpid dpid) { + return activeEqualSwitches.get(dpid); + } + + @Override + public void addListener(OpenFlowSwitchListener listener) { + if (!ofSwitchListener.contains(listener)) { + this.ofSwitchListener.add(listener); + } + } + + @Override + public void removeListener(OpenFlowSwitchListener listener) { + this.ofSwitchListener.remove(listener); + } + + @Override + public void addPacketListener(int priority, PacketListener listener) { + ofPacketListener.put(priority, listener); + } + + @Override + public void removePacketListener(PacketListener listener) { + ofPacketListener.values().remove(listener); + } + + @Override + public void addEventListener(OpenFlowEventListener listener) { + ofEventListener.add(listener); + } + + @Override + public void removeEventListener(OpenFlowEventListener listener) { + ofEventListener.remove(listener); + } + + @Override + public void write(Dpid dpid, OFMessage msg) { + this.getSwitch(dpid).sendMsg(msg); + } + + @Override + public void processPacket(Dpid dpid, OFMessage msg) { + Collection<OFFlowStatsEntry> flowStats; + Collection<OFTableStatsEntry> tableStats; + Collection<OFGroupStatsEntry> groupStats; + Collection<OFGroupDescStatsEntry> groupDescStats; + Collection<OFPortStatsEntry> portStats; + + switch (msg.getType()) { + case PORT_STATUS: + for (OpenFlowSwitchListener l : ofSwitchListener) { + l.portChanged(dpid, (OFPortStatus) msg); + } + break; + case FEATURES_REPLY: + for (OpenFlowSwitchListener l : ofSwitchListener) { + l.switchChanged(dpid); + } + break; + case PACKET_IN: + OpenFlowPacketContext pktCtx = DefaultOpenFlowPacketContext + .packetContextFromPacketIn(this.getSwitch(dpid), + (OFPacketIn) msg); + for (PacketListener p : ofPacketListener.values()) { + p.handlePacket(pktCtx); + } + break; + // TODO: Consider using separate threadpool for sensitive messages. + // ie. Back to back error could cause us to starve. + case FLOW_REMOVED: + case ERROR: + executorMsgs.submit(new OFMessageHandler(dpid, msg)); + break; + case STATS_REPLY: + OFStatsReply reply = (OFStatsReply) msg; + switch (reply.getStatsType()) { + case PORT_DESC: + for (OpenFlowSwitchListener l : ofSwitchListener) { + l.switchChanged(dpid); + } + break; + case FLOW: + flowStats = publishFlowStats(dpid, (OFFlowStatsReply) reply); + if (flowStats != null) { + OFFlowStatsReply.Builder rep = + OFFactories.getFactory(msg.getVersion()).buildFlowStatsReply(); + rep.setEntries(Lists.newLinkedList(flowStats)); + rep.setXid(reply.getXid()); + executorMsgs.submit(new OFMessageHandler(dpid, rep.build())); + } + break; + case TABLE: + tableStats = publishTableStats(dpid, (OFTableStatsReply) reply); + if (tableStats != null) { + OFTableStatsReply.Builder rep = + OFFactories.getFactory(msg.getVersion()).buildTableStatsReply(); + rep.setEntries(Lists.newLinkedList(tableStats)); + executorMsgs.submit(new OFMessageHandler(dpid, rep.build())); + } + break; + case GROUP: + groupStats = publishGroupStats(dpid, (OFGroupStatsReply) reply); + if (groupStats != null) { + OFGroupStatsReply.Builder rep = + OFFactories.getFactory(msg.getVersion()).buildGroupStatsReply(); + rep.setEntries(Lists.newLinkedList(groupStats)); + rep.setXid(reply.getXid()); + executorMsgs.submit(new OFMessageHandler(dpid, rep.build())); + } + break; + case GROUP_DESC: + groupDescStats = publishGroupDescStats(dpid, + (OFGroupDescStatsReply) reply); + if (groupDescStats != null) { + OFGroupDescStatsReply.Builder rep = + OFFactories.getFactory(msg.getVersion()).buildGroupDescStatsReply(); + rep.setEntries(Lists.newLinkedList(groupDescStats)); + rep.setXid(reply.getXid()); + executorMsgs.submit(new OFMessageHandler(dpid, rep.build())); + } + break; + case PORT: + executorMsgs.submit(new OFMessageHandler(dpid, reply)); + break; + case METER: + executorMsgs.submit(new OFMessageHandler(dpid, reply)); + break; + case EXPERIMENTER: + if (reply instanceof OFCalientFlowStatsReply) { + // Convert Calient flow statistics to regular flow stats + // TODO: parse remaining fields such as power levels etc. when we have proper monitoring API + OFFlowStatsReply.Builder fsr = getSwitch(dpid).factory().buildFlowStatsReply(); + List<OFFlowStatsEntry> entries = new LinkedList<>(); + for (OFCalientFlowStatsEntry entry : ((OFCalientFlowStatsReply) msg).getEntries()) { + + // Single instruction, i.e., output to port + OFActionOutput action = OFFactories + .getFactory(msg.getVersion()) + .actions() + .buildOutput() + .setPort(entry.getOutPort()) + .build(); + OFInstruction instruction = OFFactories + .getFactory(msg.getVersion()) + .instructions() + .applyActions(Collections.singletonList(action)); + OFFlowStatsEntry fs = getSwitch(dpid).factory().buildFlowStatsEntry() + .setMatch(entry.getMatch()) + .setTableId(entry.getTableId()) + .setDurationSec(entry.getDurationSec()) + .setDurationNsec(entry.getDurationNsec()) + .setPriority(entry.getPriority()) + .setIdleTimeout(entry.getIdleTimeout()) + .setHardTimeout(entry.getHardTimeout()) + .setFlags(entry.getFlags()) + .setCookie(entry.getCookie()) + .setInstructions(Collections.singletonList(instruction)) + .build(); + entries.add(fs); + } + fsr.setEntries(entries); + + flowStats = publishFlowStats(dpid, fsr.build()); + if (flowStats != null) { + OFFlowStatsReply.Builder rep = + OFFactories.getFactory(msg.getVersion()).buildFlowStatsReply(); + rep.setEntries(Lists.newLinkedList(flowStats)); + executorMsgs.submit(new OFMessageHandler(dpid, rep.build())); + } + } else { + executorMsgs.submit(new OFMessageHandler(dpid, reply)); + } + break; + default: + log.warn("Discarding unknown stats reply type {}", reply.getStatsType()); + break; + } + break; + case BARRIER_REPLY: + executorBarrier.submit(new OFMessageHandler(dpid, msg)); + break; + case EXPERIMENTER: + long experimenter = ((OFExperimenter) msg).getExperimenter(); + if (experimenter == 0x748771) { + // LINC-OE port stats + OFCircuitPortStatus circuitPortStatus = (OFCircuitPortStatus) msg; + OFPortStatus.Builder portStatus = this.getSwitch(dpid).factory().buildPortStatus(); + OFPortDesc.Builder portDesc = this.getSwitch(dpid).factory().buildPortDesc(); + portDesc.setPortNo(circuitPortStatus.getPortNo()) + .setHwAddr(circuitPortStatus.getHwAddr()) + .setName(circuitPortStatus.getName()) + .setConfig(circuitPortStatus.getConfig()) + .setState(circuitPortStatus.getState()); + portStatus.setReason(circuitPortStatus.getReason()).setDesc(portDesc.build()); + for (OpenFlowSwitchListener l : ofSwitchListener) { + l.portChanged(dpid, portStatus.build()); + } + } else { + log.warn("Handling experimenter type {} not yet implemented", + ((OFExperimenter) msg).getExperimenter(), msg); + } + break; + default: + log.warn("Handling message type {} not yet implemented {}", + msg.getType(), msg); + } + } + + private synchronized Collection<OFFlowStatsEntry> publishFlowStats(Dpid dpid, + OFFlowStatsReply reply) { + //TODO: Get rid of synchronized + fullFlowStats.putAll(dpid, reply.getEntries()); + if (!reply.getFlags().contains(OFStatsReplyFlags.REPLY_MORE)) { + return fullFlowStats.removeAll(dpid); + } + return null; + } + + private synchronized Collection<OFTableStatsEntry> publishTableStats(Dpid dpid, + OFTableStatsReply reply) { + //TODO: Get rid of synchronized + fullTableStats.putAll(dpid, reply.getEntries()); + if (!reply.getFlags().contains(OFStatsReplyFlags.REPLY_MORE)) { + return fullTableStats.removeAll(dpid); + } + return null; + } + + private synchronized Collection<OFGroupStatsEntry> publishGroupStats(Dpid dpid, + OFGroupStatsReply reply) { + //TODO: Get rid of synchronized + fullGroupStats.putAll(dpid, reply.getEntries()); + if (!reply.getFlags().contains(OFStatsReplyFlags.REPLY_MORE)) { + return fullGroupStats.removeAll(dpid); + } + return null; + } + + private synchronized Collection<OFGroupDescStatsEntry> publishGroupDescStats(Dpid dpid, + OFGroupDescStatsReply reply) { + //TODO: Get rid of synchronized + fullGroupDescStats.putAll(dpid, reply.getEntries()); + if (!reply.getFlags().contains(OFStatsReplyFlags.REPLY_MORE)) { + return fullGroupDescStats.removeAll(dpid); + } + return null; + } + + private synchronized Collection<OFPortStatsEntry> publishPortStats(Dpid dpid, + OFPortStatsReply reply) { + fullPortStats.putAll(dpid, reply.getEntries()); + if (!reply.getFlags().contains(OFStatsReplyFlags.REPLY_MORE)) { + return fullPortStats.removeAll(dpid); + } + return null; + } + + @Override + public void setRole(Dpid dpid, RoleState role) { + final OpenFlowSwitch sw = getSwitch(dpid); + if (sw == null) { + log.debug("Switch not connected. Ignoring setRole({}, {})", dpid, role); + return; + } + sw.setRole(role); + } + + /** + * Implementation of an OpenFlow Agent which is responsible for + * keeping track of connected switches and the state in which + * they are. + */ + public class OpenFlowSwitchAgent implements OpenFlowAgent { + + private final Logger log = LoggerFactory.getLogger(OpenFlowSwitchAgent.class); + private final Lock switchLock = new ReentrantLock(); + + @Override + public boolean addConnectedSwitch(Dpid dpid, OpenFlowSwitch sw) { + + if (connectedSwitches.get(dpid) != null) { + log.error("Trying to add connectedSwitch but found a previous " + + "value for dpid: {}", dpid); + return false; + } else { + log.info("Added switch {}", dpid); + connectedSwitches.put(dpid, sw); + for (OpenFlowSwitchListener l : ofSwitchListener) { + l.switchAdded(dpid); + } + return true; + } + } + + @Override + public boolean validActivation(Dpid dpid) { + if (connectedSwitches.get(dpid) == null) { + log.error("Trying to activate switch but is not in " + + "connected switches: dpid {}. Aborting ..", + dpid); + return false; + } + if (activeMasterSwitches.get(dpid) != null || + activeEqualSwitches.get(dpid) != null) { + log.error("Trying to activate switch but it is already " + + "activated: dpid {}. Found in activeMaster: {} " + + "Found in activeEqual: {}. Aborting ..", + dpid, + (activeMasterSwitches.get(dpid) == null) ? 'N' : 'Y', + (activeEqualSwitches.get(dpid) == null) ? 'N' : 'Y'); + return false; + } + return true; + } + + + @Override + public boolean addActivatedMasterSwitch(Dpid dpid, OpenFlowSwitch sw) { + switchLock.lock(); + try { + if (!validActivation(dpid)) { + return false; + } + activeMasterSwitches.put(dpid, sw); + return true; + } finally { + switchLock.unlock(); + } + } + + @Override + public boolean addActivatedEqualSwitch(Dpid dpid, OpenFlowSwitch sw) { + switchLock.lock(); + try { + if (!validActivation(dpid)) { + return false; + } + activeEqualSwitches.put(dpid, sw); + log.info("Added Activated EQUAL Switch {}", dpid); + return true; + } finally { + switchLock.unlock(); + } + } + + @Override + public void transitionToMasterSwitch(Dpid dpid) { + switchLock.lock(); + try { + if (activeMasterSwitches.containsKey(dpid)) { + return; + } + OpenFlowSwitch sw = activeEqualSwitches.remove(dpid); + if (sw == null) { + sw = getSwitch(dpid); + if (sw == null) { + log.error("Transition to master called on sw {}, but switch " + + "was not found in controller-cache", dpid); + return; + } + } + log.info("Transitioned switch {} to MASTER", dpid); + activeMasterSwitches.put(dpid, sw); + } finally { + switchLock.unlock(); + } + } + + + @Override + public void transitionToEqualSwitch(Dpid dpid) { + switchLock.lock(); + try { + if (activeEqualSwitches.containsKey(dpid)) { + return; + } + OpenFlowSwitch sw = activeMasterSwitches.remove(dpid); + if (sw == null) { + sw = getSwitch(dpid); + if (sw == null) { + log.error("Transition to equal called on sw {}, but switch " + + "was not found in controller-cache", dpid); + return; + } + } + log.info("Transitioned switch {} to EQUAL", dpid); + activeEqualSwitches.put(dpid, sw); + } finally { + switchLock.unlock(); + } + + } + + @Override + public void removeConnectedSwitch(Dpid dpid) { + connectedSwitches.remove(dpid); + OpenFlowSwitch sw = activeMasterSwitches.remove(dpid); + if (sw == null) { + log.debug("sw was null for {}", dpid); + sw = activeEqualSwitches.remove(dpid); + } + for (OpenFlowSwitchListener l : ofSwitchListener) { + l.switchRemoved(dpid); + } + } + + @Override + public void processMessage(Dpid dpid, OFMessage m) { + processPacket(dpid, m); + } + + @Override + public void returnRoleReply(Dpid dpid, RoleState requested, RoleState response) { + for (OpenFlowSwitchListener l : ofSwitchListener) { + l.receivedRoleReply(dpid, requested, response); + } + } + } + + protected final class OFMessageHandler implements Runnable { + + protected final OFMessage msg; + protected final Dpid dpid; + + public OFMessageHandler(Dpid dpid, OFMessage msg) { + this.msg = msg; + this.dpid = dpid; + } + + @Override + public void run() { + for (OpenFlowEventListener listener : ofEventListener) { + listener.handleMessage(dpid, msg); + } + } + + } + +} diff --git a/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/OpenflowPipelineFactory.java b/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/OpenflowPipelineFactory.java new file mode 100644 index 00000000..1467520d --- /dev/null +++ b/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/OpenflowPipelineFactory.java @@ -0,0 +1,93 @@ +/* + * Copyright 2014 Open Networking Laboratory + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.onosproject.openflow.controller.impl; + +import java.util.concurrent.ThreadPoolExecutor; + +import org.jboss.netty.channel.ChannelPipeline; +import org.jboss.netty.channel.ChannelPipelineFactory; +import org.jboss.netty.channel.Channels; +import org.jboss.netty.handler.execution.ExecutionHandler; +import org.jboss.netty.handler.timeout.IdleStateHandler; +import org.jboss.netty.handler.timeout.ReadTimeoutHandler; +import org.jboss.netty.util.ExternalResourceReleasable; +import org.jboss.netty.util.HashedWheelTimer; +import org.jboss.netty.util.Timer; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import javax.net.ssl.SSLEngine; + +/** + * Creates a ChannelPipeline for a server-side openflow channel. + */ +public class OpenflowPipelineFactory + implements ChannelPipelineFactory, ExternalResourceReleasable { + + private final Logger log = LoggerFactory.getLogger(getClass()); + + private final SSLEngine sslEngine; + protected Controller controller; + protected ThreadPoolExecutor pipelineExecutor; + protected Timer timer; + protected IdleStateHandler idleHandler; + protected ReadTimeoutHandler readTimeoutHandler; + + public OpenflowPipelineFactory(Controller controller, + ThreadPoolExecutor pipelineExecutor, + SSLEngine sslEngine) { + super(); + this.controller = controller; + this.pipelineExecutor = pipelineExecutor; + this.timer = new HashedWheelTimer(); + this.idleHandler = new IdleStateHandler(timer, 20, 25, 0); + this.readTimeoutHandler = new ReadTimeoutHandler(timer, 30); + this.sslEngine = sslEngine; + } + + @Override + public ChannelPipeline getPipeline() throws Exception { + OFChannelHandler handler = new OFChannelHandler(controller); + + ChannelPipeline pipeline = Channels.pipeline(); + if (sslEngine != null) { + log.info("OpenFlow SSL enabled."); + pipeline.addLast("ssl", + new org.jboss.netty.handler.ssl.SslHandler(sslEngine)); + } else { + log.info("OpenFlow SSL disabled"); + } + pipeline.addLast("ofmessagedecoder", new OFMessageDecoder()); + pipeline.addLast("ofmessageencoder", new OFMessageEncoder()); + pipeline.addLast("idle", idleHandler); + pipeline.addLast("timeout", readTimeoutHandler); + // XXX S ONOS: was 15 increased it to fix Issue #296 + pipeline.addLast("handshaketimeout", + new HandshakeTimeoutHandler(handler, timer, 60)); + if (pipelineExecutor != null) { + pipeline.addLast("pipelineExecutor", + new ExecutionHandler(pipelineExecutor)); + } + pipeline.addLast("handler", handler); + return pipeline; + } + + @Override + public void releaseExternalResources() { + timer.stop(); + } +} diff --git a/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/RoleManager.java b/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/RoleManager.java new file mode 100644 index 00000000..bd4875cf --- /dev/null +++ b/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/RoleManager.java @@ -0,0 +1,406 @@ +/* + * Copyright 2014 Open Networking Laboratory + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.onosproject.openflow.controller.impl; + +import com.google.common.cache.Cache; +import com.google.common.cache.CacheBuilder; +import org.onosproject.openflow.controller.RoleState; +import org.onosproject.openflow.controller.driver.OpenFlowSwitchDriver; +import org.onosproject.openflow.controller.driver.RoleHandler; +import org.onosproject.openflow.controller.driver.RoleRecvStatus; +import org.onosproject.openflow.controller.driver.RoleReplyInfo; +import org.onosproject.openflow.controller.driver.SwitchStateException; +import org.projectfloodlight.openflow.protocol.OFControllerRole; +import org.projectfloodlight.openflow.protocol.OFErrorMsg; +import org.projectfloodlight.openflow.protocol.OFErrorType; +import org.projectfloodlight.openflow.protocol.OFExperimenter; +import org.projectfloodlight.openflow.protocol.OFFactories; +import org.projectfloodlight.openflow.protocol.OFNiciraControllerRole; +import org.projectfloodlight.openflow.protocol.OFNiciraControllerRoleReply; +import org.projectfloodlight.openflow.protocol.OFRoleReply; +import org.projectfloodlight.openflow.protocol.OFRoleRequest; +import org.projectfloodlight.openflow.protocol.OFVersion; +import org.projectfloodlight.openflow.protocol.errormsg.OFBadRequestErrorMsg; +import org.projectfloodlight.openflow.protocol.errormsg.OFRoleRequestFailedErrorMsg; +import org.projectfloodlight.openflow.types.U64; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.io.IOException; +import java.util.concurrent.TimeUnit; + + +/** + * A utility class to handle role requests and replies for this channel. + * After a role request is submitted the role changer keeps track of the + * pending request, collects the reply (if any) and times out the request + * if necessary. + */ +class RoleManager implements RoleHandler { + protected static final long NICIRA_EXPERIMENTER = 0x2320; + + private static Logger log = LoggerFactory.getLogger(RoleManager.class); + + // The time until cached XID is evicted. Arbitrary for now. + private final int pendingXidTimeoutSeconds = 60; + + // The cache for pending expected RoleReplies keyed on expected XID + private Cache<Integer, RoleState> pendingReplies = + CacheBuilder.newBuilder() + .expireAfterWrite(pendingXidTimeoutSeconds, TimeUnit.SECONDS) + .build(); + + // the expectation set by the caller for the returned role + private RoleRecvStatus expectation; + private final OpenFlowSwitchDriver sw; + + + public RoleManager(OpenFlowSwitchDriver sw) { + this.expectation = RoleRecvStatus.MATCHED_CURRENT_ROLE; + this.sw = sw; + } + + /** + * Send NX role request message to the switch requesting the specified + * role. + * + * @param role role to request + */ + private int sendNxRoleRequest(RoleState role) throws IOException { + // Convert the role enum to the appropriate role to send + OFNiciraControllerRole roleToSend = OFNiciraControllerRole.ROLE_OTHER; + switch (role) { + case MASTER: + roleToSend = OFNiciraControllerRole.ROLE_MASTER; + break; + case SLAVE: + case EQUAL: + default: + // ensuring that the only two roles sent to 1.0 switches with + // Nicira role support, are MASTER and SLAVE + roleToSend = OFNiciraControllerRole.ROLE_OTHER; + log.debug("Sending Nx Role.SLAVE to switch {}.", sw); + } + int xid = sw.getNextTransactionId(); + OFExperimenter roleRequest = OFFactories.getFactory(OFVersion.OF_10) + .buildNiciraControllerRoleRequest() + .setXid(xid) + .setRole(roleToSend) + .build(); + sw.sendRoleRequest(roleRequest); + return xid; + } + + private int sendOF13RoleRequest(RoleState role) throws IOException { + // Convert the role enum to the appropriate role to send + OFControllerRole roleToSend = OFControllerRole.ROLE_NOCHANGE; + switch (role) { + case EQUAL: + roleToSend = OFControllerRole.ROLE_EQUAL; + break; + case MASTER: + roleToSend = OFControllerRole.ROLE_MASTER; + break; + case SLAVE: + roleToSend = OFControllerRole.ROLE_SLAVE; + break; + default: + log.warn("Sending default role.noChange to switch {}." + + " Should only be used for queries.", sw); + } + + int xid = sw.getNextTransactionId(); + OFRoleRequest rrm = OFFactories.getFactory(OFVersion.OF_13) + .buildRoleRequest() + .setRole(roleToSend) + .setXid(xid) + //FIXME fix below when we actually use generation ids + .setGenerationId(U64.ZERO) + .build(); + + sw.sendRoleRequest(rrm); + return xid; + } + + @Override + public synchronized boolean sendRoleRequest(RoleState role, RoleRecvStatus exp) + throws IOException { + this.expectation = exp; + + if (sw.factory().getVersion() == OFVersion.OF_10) { + Boolean supportsNxRole = sw.supportNxRole(); + if (!supportsNxRole) { + log.debug("Switch driver indicates no support for Nicira " + + "role request messages. Not sending ..."); + handleUnsentRoleMessage(role, + expectation); + return false; + } + // OF1.0 switch with support for NX_ROLE_REQUEST vendor extn. + // make Role.EQUAL become Role.SLAVE + RoleState roleToSend = (role == RoleState.EQUAL) ? RoleState.SLAVE : role; + pendingReplies.put(sendNxRoleRequest(roleToSend), role); + } else { + // OF1.3 switch, use OFPT_ROLE_REQUEST message + pendingReplies.put(sendOF13RoleRequest(role), role); + } + return true; + } + + private void handleUnsentRoleMessage(RoleState role, + RoleRecvStatus exp) throws IOException { + // typically this is triggered for a switch where role messages + // are not supported - we confirm that the role being set is + // master + if (exp != RoleRecvStatus.MATCHED_SET_ROLE) { + + log.error("Expected MASTER role from registry for switch " + + "which has no support for role-messages." + + "Received {}. It is possible that this switch " + + "is connected to other controllers, in which " + + "case it should support role messages - not " + + "moving forward.", role); + + } + + } + + + @Override + public synchronized RoleRecvStatus deliverRoleReply(RoleReplyInfo rri) + throws SwitchStateException { + int xid = (int) rri.getXid(); + RoleState receivedRole = rri.getRole(); + RoleState expectedRole = pendingReplies.getIfPresent(xid); + + if (expectedRole == null) { + RoleState currentRole = (sw != null) ? sw.getRole() : null; + if (currentRole != null) { + if (currentRole == rri.getRole()) { + // Don't disconnect if the role reply we received is + // for the same role we are already in. + // FIXME: but we do from the caller anyways. + log.debug("Received unexpected RoleReply from " + + "Switch: {}. " + + "Role in reply is same as current role of this " + + "controller for this sw. Ignoring ...", + sw.getStringId()); + return RoleRecvStatus.OTHER_EXPECTATION; + } else { + String msg = String.format("Switch: [%s], " + + "received unexpected RoleReply[%s]. " + + "No roles are pending, and this controller's " + + "current role:[%s] does not match reply. " + + "Disconnecting switch ... ", + sw.getStringId(), + rri, currentRole); + throw new SwitchStateException(msg); + } + } + log.debug("Received unexpected RoleReply {} from " + + "Switch: {}. " + + "This controller has no current role for this sw. " + + "Ignoring ...", + rri, + sw == null ? "(null)" : sw.getStringId()); + return RoleRecvStatus.OTHER_EXPECTATION; + } + + // XXX Should check generation id meaningfully and other cases of expectations + //if (pendingXid != xid) { + // log.info("Received older role reply from " + + // "switch {} ({}). Ignoring. " + + // "Waiting for {}, xid={}", + // new Object[] {sw.getStringId(), rri, + // pendingRole, pendingXid }); + // return RoleRecvStatus.OLD_REPLY; + //} + sw.returnRoleReply(expectedRole, receivedRole); + + if (expectedRole == receivedRole) { + log.debug("Received role reply message from {} that matched " + + "expected role-reply {} with expectations {}", + sw.getStringId(), receivedRole, expectation); + + // Done with this RoleReply; Invalidate + pendingReplies.invalidate(xid); + if (expectation == RoleRecvStatus.MATCHED_CURRENT_ROLE || + expectation == RoleRecvStatus.MATCHED_SET_ROLE) { + return expectation; + } else { + return RoleRecvStatus.OTHER_EXPECTATION; + } + } + + pendingReplies.invalidate(xid); + // if xids match but role's don't, perhaps its a query (OF1.3) + if (expectation == RoleRecvStatus.REPLY_QUERY) { + return expectation; + } + + return RoleRecvStatus.OTHER_EXPECTATION; + } + + /** + * Called if we receive an error message. If the xid matches the + * pending request we handle it otherwise we ignore it. + * + * Note: since we only keep the last pending request we might get + * error messages for earlier role requests that we won't be able + * to handle + */ + @Override + public synchronized RoleRecvStatus deliverError(OFErrorMsg error) + throws SwitchStateException { + RoleState errorRole = pendingReplies.getIfPresent(error.getXid()); + if (errorRole == null) { + if (error.getErrType() == OFErrorType.ROLE_REQUEST_FAILED) { + log.debug("Received an error msg from sw {} for a role request," + + " but not for pending request in role-changer; " + + " ignoring error {} ...", + sw.getStringId(), error); + } else { + log.debug("Received an error msg from sw {}, but no pending " + + "requests in role-changer; not handling ...", + sw.getStringId()); + } + return RoleRecvStatus.OTHER_EXPECTATION; + } + // it is an error related to a currently pending role request message + if (error.getErrType() == OFErrorType.BAD_REQUEST) { + log.error("Received a error msg {} from sw {} for " + + "pending role request {}. Switch driver indicates " + + "role-messaging is supported. Possible issues in " + + "switch driver configuration?", + ((OFBadRequestErrorMsg) error).toString(), + sw.getStringId(), + errorRole); + return RoleRecvStatus.UNSUPPORTED; + } + + if (error.getErrType() == OFErrorType.ROLE_REQUEST_FAILED) { + OFRoleRequestFailedErrorMsg rrerr = + (OFRoleRequestFailedErrorMsg) error; + switch (rrerr.getCode()) { + case BAD_ROLE: + // switch says that current-role-req has bad role? + // for now we disconnect + // fall-thru + case STALE: + // switch says that current-role-req has stale gen-id? + // for now we disconnect + // fall-thru + case UNSUP: + // switch says that current-role-req has role that + // cannot be supported? for now we disconnect + String msgx = String.format("Switch: [%s], " + + "received Error to for pending role request [%s]. " + + "Error:[%s]. Disconnecting switch ... ", + sw.getStringId(), + errorRole, rrerr); + throw new SwitchStateException(msgx); + default: + break; + } + } + + // This error message was for a role request message but we dont know + // how to handle errors for nicira role request messages + return RoleRecvStatus.OTHER_EXPECTATION; + } + + /** + * Extract the role from an OFVendor message. + * + * Extract the role from an OFVendor message if the message is a + * Nicira role reply. Otherwise return null. + * + * @param experimenterMsg message + * @return The role in the message if the message is a Nicira role + * reply, null otherwise. + * @throws SwitchStateException If the message is a Nicira role reply + * but the numeric role value is unknown. + */ + @Override + public RoleState extractNiciraRoleReply(OFExperimenter experimenterMsg) + throws SwitchStateException { + int vendor = (int) experimenterMsg.getExperimenter(); + if (vendor != 0x2320) { + return null; + } + OFNiciraControllerRoleReply nrr = + (OFNiciraControllerRoleReply) experimenterMsg; + + RoleState role = null; + OFNiciraControllerRole ncr = nrr.getRole(); + switch (ncr) { + case ROLE_MASTER: + role = RoleState.MASTER; + break; + case ROLE_OTHER: + role = RoleState.EQUAL; + break; + case ROLE_SLAVE: + role = RoleState.SLAVE; + break; + default: //handled below + } + + if (role == null) { + String msg = String.format("Switch: [%s], " + + "received NX_ROLE_REPLY with invalid role " + + "value %s", + sw.getStringId(), + nrr.getRole()); + throw new SwitchStateException(msg); + } + return role; + } + + /** + * Extract the role information from an OF1.3 Role Reply Message. + * + * @param rrmsg the role message + * @return RoleReplyInfo object + * @throws SwitchStateException if the role information could not be extracted. + */ + @Override + public RoleReplyInfo extractOFRoleReply(OFRoleReply rrmsg) + throws SwitchStateException { + OFControllerRole cr = rrmsg.getRole(); + RoleState role = null; + switch (cr) { + case ROLE_EQUAL: + role = RoleState.EQUAL; + break; + case ROLE_MASTER: + role = RoleState.MASTER; + break; + case ROLE_SLAVE: + role = RoleState.SLAVE; + break; + case ROLE_NOCHANGE: // switch should send current role + default: + String msg = String.format("Unknown controller role %s " + + "received from switch %s", cr, sw); + throw new SwitchStateException(msg); + } + + return new RoleReplyInfo(role, rrmsg.getGenerationId(), rrmsg.getXid()); + } + +} + diff --git a/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/package-info.java b/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/package-info.java new file mode 100644 index 00000000..a5d9f274 --- /dev/null +++ b/framework/src/onos/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/package-info.java @@ -0,0 +1,20 @@ +/* + * Copyright 2014 Open Networking Laboratory + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +/** + * Implementation of the OpenFlow controller IO subsystem. + */ +package org.onosproject.openflow.controller.impl; |