Umesh Krishnaswamy | 345ee99 | 2012-12-13 20:29:48 -0800 | [diff] [blame] | 1 | /** |
| 2 | * Copyright (c) 2008 The Board of Trustees of The Leland Stanford Junior |
| 3 | * University |
| 4 | * |
| 5 | * Licensed under the Apache License, Version 2.0 (the "License"); you may |
| 6 | * not use this file except in compliance with the License. You may obtain |
| 7 | * a copy of the License at |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| 13 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| 14 | * License for the specific language governing permissions and limitations |
| 15 | * under the License. |
| 16 | **/ |
| 17 | |
| 18 | package org.openflow.protocol; |
| 19 | |
| 20 | import java.util.Arrays; |
| 21 | import java.util.List; |
| 22 | |
| 23 | import org.jboss.netty.buffer.ChannelBuffer; |
| 24 | import org.jboss.netty.buffer.ChannelBuffers; |
| 25 | import org.openflow.protocol.factory.MessageParseException; |
| 26 | import org.openflow.protocol.factory.OFMessageFactory; |
| 27 | import org.openflow.protocol.factory.OFMessageFactoryAware; |
| 28 | import org.openflow.util.U16; |
| 29 | |
| 30 | /** |
| 31 | * Represents an ofp_error_msg |
| 32 | * |
| 33 | * @author David Erickson (daviderickson@cs.stanford.edu) |
| 34 | * @author Rob Sherwood (rob.sherwood@stanford.edu) |
| 35 | */ |
| 36 | public class OFError extends OFMessage implements OFMessageFactoryAware { |
| 37 | public static int MINIMUM_LENGTH = 12; |
| 38 | |
| 39 | public enum OFErrorType { |
| 40 | // OFPET_VENDOR_ERROR is an extension that was added in Open vSwitch and isn't |
| 41 | // in the OF 1.0 spec, but it was easier to add it here instead of adding |
| 42 | // generic support for extensible vendor-defined error messages. |
| 43 | // It uses the random value 0xb0c2 to avoid conflicts with other possible new |
| 44 | // error types. Support for vendor-defined extended errors has been standardized |
| 45 | // in the OF 1.2 spec, so this workaround is only needed for 1.0. |
| 46 | OFPET_HELLO_FAILED, OFPET_BAD_REQUEST, OFPET_BAD_ACTION, OFPET_FLOW_MOD_FAILED, OFPET_PORT_MOD_FAILED, OFPET_QUEUE_OP_FAILED, OFPET_VENDOR_ERROR((short)0xb0c2); |
| 47 | |
| 48 | protected short value; |
| 49 | |
| 50 | private OFErrorType() { |
| 51 | this.value = (short) this.ordinal(); |
| 52 | } |
| 53 | |
| 54 | private OFErrorType(short value) { |
| 55 | this.value = value; |
| 56 | } |
| 57 | |
| 58 | public short getValue() { |
| 59 | return value; |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | public enum OFHelloFailedCode { |
| 64 | OFPHFC_INCOMPATIBLE, OFPHFC_EPERM |
| 65 | } |
| 66 | |
| 67 | public enum OFBadRequestCode { |
| 68 | OFPBRC_BAD_VERSION, OFPBRC_BAD_TYPE, OFPBRC_BAD_STAT, OFPBRC_BAD_VENDOR, OFPBRC_BAD_SUBTYPE, OFPBRC_EPERM, OFPBRC_BAD_LEN, OFPBRC_BUFFER_EMPTY, OFPBRC_BUFFER_UNKNOWN |
| 69 | } |
| 70 | |
| 71 | public enum OFBadActionCode { |
| 72 | OFPBAC_BAD_TYPE, OFPBAC_BAD_LEN, OFPBAC_BAD_VENDOR, OFPBAC_BAD_VENDOR_TYPE, OFPBAC_BAD_OUT_PORT, OFPBAC_BAD_ARGUMENT, OFPBAC_EPERM, OFPBAC_TOO_MANY, OFPBAC_BAD_QUEUE |
| 73 | } |
| 74 | |
| 75 | public enum OFFlowModFailedCode { |
| 76 | OFPFMFC_ALL_TABLES_FULL, OFPFMFC_OVERLAP, OFPFMFC_EPERM, OFPFMFC_BAD_EMERG_TIMEOUT, OFPFMFC_BAD_COMMAND, OFPFMFC_UNSUPPORTED |
| 77 | } |
| 78 | |
| 79 | public enum OFPortModFailedCode { |
| 80 | OFPPMFC_BAD_PORT, OFPPMFC_BAD_HW_ADDR |
| 81 | } |
| 82 | |
| 83 | public enum OFQueueOpFailedCode { |
| 84 | OFPQOFC_BAD_PORT, OFPQOFC_BAD_QUEUE, OFPQOFC_EPERM |
| 85 | } |
| 86 | |
| 87 | protected short errorType; |
| 88 | protected short errorCode; |
| 89 | protected int vendor; |
| 90 | protected int vendorErrorType; |
| 91 | protected short vendorErrorCode; |
| 92 | protected OFMessageFactory factory; |
| 93 | protected byte[] error; |
| 94 | protected boolean errorIsAscii; |
| 95 | |
| 96 | public OFError() { |
| 97 | super(); |
| 98 | this.type = OFType.ERROR; |
| 99 | this.length = U16.t(MINIMUM_LENGTH); |
| 100 | } |
| 101 | |
| 102 | /** |
| 103 | * @return the errorType |
| 104 | */ |
| 105 | public short getErrorType() { |
| 106 | return errorType; |
| 107 | } |
| 108 | |
| 109 | /** |
| 110 | * @param errorType |
| 111 | * the errorType to set |
| 112 | */ |
| 113 | public void setErrorType(short errorType) { |
| 114 | this.errorType = errorType; |
| 115 | } |
| 116 | |
| 117 | public void setErrorType(OFErrorType type) { |
| 118 | this.errorType = type.getValue(); |
| 119 | } |
| 120 | |
| 121 | /** |
| 122 | * @return true if the error is an extended vendor error |
| 123 | */ |
| 124 | public boolean isVendorError() { |
| 125 | return errorType == OFErrorType.OFPET_VENDOR_ERROR.getValue(); |
| 126 | } |
| 127 | |
| 128 | /** |
| 129 | * @return the errorCode |
| 130 | */ |
| 131 | public short getErrorCode() { |
| 132 | return errorCode; |
| 133 | } |
| 134 | |
| 135 | /** |
Sho SHIMIZU | a1199fa | 2014-06-10 18:11:12 -0700 | [diff] [blame] | 136 | * @param code |
Umesh Krishnaswamy | 345ee99 | 2012-12-13 20:29:48 -0800 | [diff] [blame] | 137 | * the errorCode to set |
| 138 | */ |
| 139 | public void setErrorCode(OFHelloFailedCode code) { |
| 140 | this.errorCode = (short) code.ordinal(); |
| 141 | } |
| 142 | |
| 143 | public void setErrorCode(short errorCode) { |
| 144 | this.errorCode = errorCode; |
| 145 | } |
| 146 | |
| 147 | public void setErrorCode(OFBadRequestCode code) { |
| 148 | this.errorCode = (short) code.ordinal(); |
| 149 | } |
| 150 | |
| 151 | public void setErrorCode(OFBadActionCode code) { |
| 152 | this.errorCode = (short) code.ordinal(); |
| 153 | } |
| 154 | |
| 155 | public void setErrorCode(OFFlowModFailedCode code) { |
| 156 | this.errorCode = (short) code.ordinal(); |
| 157 | } |
| 158 | |
| 159 | public void setErrorCode(OFPortModFailedCode code) { |
| 160 | this.errorCode = (short) code.ordinal(); |
| 161 | } |
| 162 | |
| 163 | public void setErrorCode(OFQueueOpFailedCode code) { |
| 164 | this.errorCode = (short) code.ordinal(); |
| 165 | } |
| 166 | |
| 167 | public int getVendorErrorType() { |
| 168 | return vendorErrorType; |
| 169 | } |
| 170 | |
| 171 | public void setVendorErrorType(int vendorErrorType) { |
| 172 | this.vendorErrorType = vendorErrorType; |
| 173 | } |
| 174 | |
| 175 | public short getVendorErrorCode() { |
| 176 | return vendorErrorCode; |
| 177 | } |
| 178 | |
| 179 | public void setVendorErrorCode(short vendorErrorCode) { |
| 180 | this.vendorErrorCode = vendorErrorCode; |
| 181 | } |
| 182 | |
| 183 | public OFMessage getOffendingMsg() throws MessageParseException { |
| 184 | // should only have one message embedded; if more than one, just |
| 185 | // grab first |
| 186 | if (this.error == null) |
| 187 | return null; |
| 188 | ChannelBuffer errorMsg = ChannelBuffers.wrappedBuffer(this.error); |
| 189 | if (factory == null) |
| 190 | throw new RuntimeException("MessageFactory not set"); |
| 191 | |
| 192 | List<OFMessage> msglist = this.factory.parseMessage(errorMsg); |
| 193 | if (msglist == null) |
| 194 | return null; |
| 195 | return msglist.get(0); |
| 196 | } |
| 197 | |
| 198 | /** |
| 199 | * Write this offending message into the payload of the Error message |
| 200 | * |
| 201 | * @param offendingMsg |
| 202 | */ |
| 203 | |
| 204 | public void setOffendingMsg(OFMessage offendingMsg) { |
| 205 | if (offendingMsg == null) { |
| 206 | super.setLengthU(MINIMUM_LENGTH); |
| 207 | } else { |
| 208 | this.error = new byte[offendingMsg.getLengthU()]; |
| 209 | ChannelBuffer data = ChannelBuffers.wrappedBuffer(this.error); |
| 210 | data.writerIndex(0); |
| 211 | offendingMsg.writeTo(data); |
| 212 | super.setLengthU(MINIMUM_LENGTH + offendingMsg.getLengthU()); |
| 213 | } |
| 214 | } |
| 215 | |
| 216 | public OFMessageFactory getFactory() { |
| 217 | return factory; |
| 218 | } |
| 219 | |
| 220 | @Override |
| 221 | public void setMessageFactory(OFMessageFactory factory) { |
| 222 | this.factory = factory; |
| 223 | } |
| 224 | |
| 225 | /** |
| 226 | * @return the error |
| 227 | */ |
| 228 | public byte[] getError() { |
| 229 | return error; |
| 230 | } |
| 231 | |
| 232 | /** |
| 233 | * @param error |
| 234 | * the error to set |
| 235 | */ |
| 236 | public void setError(byte[] error) { |
| 237 | this.error = error; |
| 238 | } |
| 239 | |
| 240 | /** |
| 241 | * @return the errorIsAscii |
| 242 | */ |
| 243 | public boolean isErrorIsAscii() { |
| 244 | return errorIsAscii; |
| 245 | } |
| 246 | |
| 247 | /** |
| 248 | * @param errorIsAscii |
| 249 | * the errorIsAscii to set |
| 250 | */ |
| 251 | public void setErrorIsAscii(boolean errorIsAscii) { |
| 252 | this.errorIsAscii = errorIsAscii; |
| 253 | } |
| 254 | |
| 255 | @Override |
| 256 | public void readFrom(ChannelBuffer data) { |
| 257 | super.readFrom(data); |
| 258 | this.errorType = data.readShort(); |
| 259 | this.errorCode = data.readShort(); |
| 260 | int dataLength = this.getLengthU() - MINIMUM_LENGTH; |
| 261 | if (dataLength > 0) { |
| 262 | this.error = new byte[dataLength]; |
| 263 | data.readBytes(this.error); |
| 264 | if (this.errorType == OFErrorType.OFPET_HELLO_FAILED.getValue()) |
| 265 | this.errorIsAscii = true; |
| 266 | } |
| 267 | } |
| 268 | |
| 269 | @Override |
| 270 | public void writeTo(ChannelBuffer data) { |
| 271 | super.writeTo(data); |
| 272 | data.writeShort(errorType); |
| 273 | data.writeShort(errorCode); |
| 274 | if (error != null) |
| 275 | data.writeBytes(error); |
| 276 | } |
| 277 | |
| 278 | /* |
| 279 | * (non-Javadoc) |
| 280 | * |
| 281 | * @see java.lang.Object#hashCode() |
| 282 | */ |
| 283 | @Override |
| 284 | public int hashCode() { |
| 285 | final int prime = 31; |
| 286 | int result = super.hashCode(); |
| 287 | result = prime * result + Arrays.hashCode(error); |
| 288 | result = prime * result + errorCode; |
| 289 | result = prime * result + (errorIsAscii ? 1231 : 1237); |
| 290 | result = prime * result + errorType; |
| 291 | return result; |
| 292 | } |
| 293 | |
| 294 | /* |
| 295 | * (non-Javadoc) |
| 296 | * |
| 297 | * @see java.lang.Object#equals(java.lang.Object) |
| 298 | */ |
| 299 | @Override |
| 300 | public boolean equals(Object obj) { |
| 301 | if (this == obj) |
| 302 | return true; |
| 303 | if (!super.equals(obj)) |
| 304 | return false; |
| 305 | if (getClass() != obj.getClass()) |
| 306 | return false; |
| 307 | OFError other = (OFError) obj; |
| 308 | if (!Arrays.equals(error, other.error)) |
| 309 | return false; |
| 310 | if (errorCode != other.errorCode) |
| 311 | return false; |
| 312 | if (errorIsAscii != other.errorIsAscii) |
| 313 | return false; |
| 314 | if (errorType != other.errorType) |
| 315 | return false; |
| 316 | return true; |
| 317 | } |
| 318 | |
| 319 | } |