| /* |
| * 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.drivers; |
| |
| |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.onosproject.openflow.controller.Dpid; |
| import org.onosproject.openflow.controller.RoleState; |
| import org.onosproject.openflow.controller.driver.AbstractOpenFlowSwitch; |
| import org.onosproject.openflow.controller.driver.OpenFlowSwitchDriver; |
| import org.onosproject.openflow.controller.driver.OpenFlowSwitchDriverFactory; |
| import org.projectfloodlight.openflow.protocol.OFDescStatsReply; |
| import org.projectfloodlight.openflow.protocol.OFMessage; |
| import org.projectfloodlight.openflow.protocol.OFPortDesc; |
| import org.projectfloodlight.openflow.protocol.OFVersion; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * A simple implementation of a driver manager that differentiates between |
| * connected switches using the OF Description Statistics Reply message. |
| */ |
| public final class DriverManager implements OpenFlowSwitchDriverFactory { |
| |
| private static final Logger log = LoggerFactory.getLogger(DriverManager.class); |
| |
| // Whether to use an OF 1.3 configured TTP, or to use an OF 1.0-style |
| // single table with packet-ins. |
| private static boolean cpqdUsePipeline13 = false; |
| |
| /** |
| * Return an IOFSwitch object based on switch's manufacturer description |
| * from OFDescStatsReply. |
| * |
| * @param desc DescriptionStatistics reply from the switch |
| * @return A IOFSwitch instance if the driver found an implementation for |
| * the given description. Otherwise it returns OFSwitchImplBase |
| */ |
| @Override |
| public OpenFlowSwitchDriver getOFSwitchImpl(Dpid dpid, |
| OFDescStatsReply desc, OFVersion ofv) { |
| String vendor = desc.getMfrDesc(); |
| String hw = desc.getHwDesc(); |
| if (vendor.startsWith("Stanford University, Ericsson Research and CPqD Research") |
| && |
| hw.startsWith("OpenFlow 1.3 Reference Userspace Switch")) { |
| return new OFSwitchImplCPqD13(dpid, desc, cpqdUsePipeline13); |
| } |
| |
| if (hw.startsWith("Open vSwitch")) { |
| if (ofv == OFVersion.OF_10) { |
| return new OFSwitchImplOVS10(dpid, desc); |
| } else if (ofv == OFVersion.OF_13) { |
| return new OFSwitchImplOVS13(dpid, desc); |
| } |
| } |
| |
| String sw = desc.getSwDesc(); |
| if (sw.startsWith("LINC-OE")) { |
| log.warn("Optical Emulator LINC-OE with DPID:{} found..", dpid); |
| return new OFOpticalSwitchImplLINC13(dpid, desc); |
| } |
| |
| log.warn("DriverManager could not identify switch desc: {}. " |
| + "Assigning AbstractOpenFlowSwich", desc); |
| return new AbstractOpenFlowSwitch(dpid, desc) { |
| |
| @Override |
| public void setRole(RoleState state) { |
| this.role = RoleState.MASTER; |
| } |
| |
| @Override |
| public void write(List<OFMessage> msgs) { |
| channel.write(msgs); |
| } |
| |
| @Override |
| public void write(OFMessage msg) { |
| channel.write(Collections.singletonList(msg)); |
| |
| } |
| |
| @Override |
| public Boolean supportNxRole() { |
| return false; |
| } |
| |
| @Override |
| public void startDriverHandshake() {} |
| |
| @Override |
| public void processDriverHandshakeMessage(OFMessage m) {} |
| |
| @Override |
| public boolean isDriverHandshakeComplete() { |
| return true; |
| } |
| |
| @Override |
| public List<OFPortDesc> getPorts() { |
| if (this.factory().getVersion() == OFVersion.OF_10) { |
| return Collections.unmodifiableList(features.getPorts()); |
| } else { |
| return Collections.unmodifiableList(ports.getEntries()); |
| } |
| } |
| }; |
| } |
| |
| /** |
| * Private constructor to avoid instantiation. |
| */ |
| private DriverManager() { |
| } |
| |
| /** |
| * Sets the configuration parameter which determines how the CPqD switch |
| * is set up. If usePipeline13 is true, a 1.3 pipeline will be set up on |
| * the switch. Otherwise, the switch will be set up in a 1.0 style with |
| * a single table where missed packets are sent to the controller. |
| * |
| * @param usePipeline13 whether to use a 1.3 pipeline or not |
| */ |
| public static void setConfigForCpqd(boolean usePipeline13) { |
| cpqdUsePipeline13 = usePipeline13; |
| } |
| |
| public static OpenFlowSwitchDriver getSwitch(Dpid dpid, |
| OFDescStatsReply desc, OFVersion ofv) { |
| return new DriverManager().getOFSwitchImpl(dpid, desc, ofv); |
| } |
| |
| } |