Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016-present Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.onosproject.lisp.msg.types; |
| 17 | |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 18 | import io.netty.buffer.ByteBuf; |
| 19 | import org.onosproject.lisp.msg.exceptions.LispParseError; |
| 20 | import org.onosproject.lisp.msg.exceptions.LispReaderException; |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 21 | import org.onosproject.lisp.msg.exceptions.LispWriterException; |
Jian Li | 55ddcdb | 2016-11-21 17:04:01 +0900 | [diff] [blame] | 22 | import org.onosproject.lisp.msg.types.LispAppDataLcafAddress.AppDataLcafAddressReader; |
| 23 | import org.onosproject.lisp.msg.types.LispAppDataLcafAddress.AppDataLcafAddressWriter; |
| 24 | import org.onosproject.lisp.msg.types.LispListLcafAddress.ListLcafAddressReader; |
| 25 | import org.onosproject.lisp.msg.types.LispListLcafAddress.ListLcafAddressWriter; |
| 26 | import org.onosproject.lisp.msg.types.LispNatLcafAddress.NatLcafAddressReader; |
| 27 | import org.onosproject.lisp.msg.types.LispNatLcafAddress.NatLcafAddressWriter; |
| 28 | import org.onosproject.lisp.msg.types.LispSegmentLcafAddress.SegmentLcafAddressReader; |
| 29 | import org.onosproject.lisp.msg.types.LispSegmentLcafAddress.SegmentLcafAddressWriter; |
| 30 | import org.onosproject.lisp.msg.types.LispSourceDestLcafAddress.SourceDestLcafAddressReader; |
| 31 | import org.onosproject.lisp.msg.types.LispSourceDestLcafAddress.SourceDestLcafAddressWriter; |
| 32 | import org.onosproject.lisp.msg.types.LispTeLcafAddress.TeLcafAddressReader; |
| 33 | import org.onosproject.lisp.msg.types.LispTeLcafAddress.TeLcafAddressWriter; |
Jian Li | d4e6370 | 2016-08-30 18:29:20 +0900 | [diff] [blame] | 34 | import org.slf4j.Logger; |
| 35 | import org.slf4j.LoggerFactory; |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 36 | |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 37 | import java.util.Objects; |
| 38 | |
| 39 | import static com.google.common.base.MoreObjects.toStringHelper; |
Jian Li | 55ddcdb | 2016-11-21 17:04:01 +0900 | [diff] [blame] | 40 | import static org.onosproject.lisp.msg.types.LispCanonicalAddressFormatEnum.APPLICATION_DATA; |
| 41 | import static org.onosproject.lisp.msg.types.LispCanonicalAddressFormatEnum.LIST; |
| 42 | import static org.onosproject.lisp.msg.types.LispCanonicalAddressFormatEnum.NAT; |
| 43 | import static org.onosproject.lisp.msg.types.LispCanonicalAddressFormatEnum.SEGMENT; |
| 44 | import static org.onosproject.lisp.msg.types.LispCanonicalAddressFormatEnum.SOURCE_DEST; |
| 45 | import static org.onosproject.lisp.msg.types.LispCanonicalAddressFormatEnum.TRAFFIC_ENGINEERING; |
| 46 | |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 47 | |
| 48 | /** |
| 49 | * LISP Canonical Address Formatted address class. |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 50 | * <p> |
Jian Li | 8fc2d2f | 2016-08-08 14:43:53 +0900 | [diff] [blame] | 51 | * <pre> |
| 52 | * {@literal |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 53 | * 0 1 2 3 |
| 54 | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| 55 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 56 | * | AFI = 16387 | Rsvd1 | Flags | |
| 57 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 58 | * | Type | Rsvd2 | Length | |
| 59 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
Jian Li | 8fc2d2f | 2016-08-08 14:43:53 +0900 | [diff] [blame] | 60 | * }</pre> |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 61 | */ |
| 62 | public class LispLcafAddress extends LispAfiAddress { |
| 63 | |
Jian Li | d4e6370 | 2016-08-30 18:29:20 +0900 | [diff] [blame] | 64 | private static final Logger log = LoggerFactory.getLogger(LispLcafAddress.class); |
| 65 | |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 66 | private final LispCanonicalAddressFormatEnum lcafType; |
| 67 | private final byte reserved1; |
| 68 | private final byte reserved2; |
| 69 | private final byte flag; |
| 70 | private final short length; |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 71 | |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 72 | private static final int LCAF_AFI_CODE_BYTE_LENGTH = 2; |
| 73 | |
Jian Li | ef0f723 | 2016-11-15 19:55:46 +0900 | [diff] [blame] | 74 | private static final int LENGTH_FIELD_INDEX = 7; |
| 75 | public static final int COMMON_HEADER_SIZE = 8; |
| 76 | |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 77 | /** |
| 78 | * Initializes LCAF address. |
| 79 | * |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 80 | * @param lcafType LCAF type |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 81 | * @param reserved1 reserved1 field |
| 82 | * @param reserved2 reserved2 field |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 83 | * @param flag flag field |
| 84 | * @param length length field |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 85 | */ |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 86 | protected LispLcafAddress(LispCanonicalAddressFormatEnum lcafType, |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 87 | byte reserved1, byte reserved2, byte flag, short length) { |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 88 | super(AddressFamilyIdentifierEnum.LCAF); |
| 89 | this.lcafType = lcafType; |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 90 | this.reserved1 = reserved1; |
| 91 | this.reserved2 = reserved2; |
| 92 | this.flag = flag; |
| 93 | this.length = length; |
| 94 | } |
| 95 | |
| 96 | /** |
| 97 | * Initializes LCAF address. |
| 98 | * |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 99 | * @param lcafType LCAF type |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 100 | * @param reserved2 reserved2 field |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 101 | * @param flag flag field |
| 102 | * @param length length field |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 103 | */ |
| 104 | protected LispLcafAddress(LispCanonicalAddressFormatEnum lcafType, |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 105 | byte reserved2, byte flag, short length) { |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 106 | super(AddressFamilyIdentifierEnum.LCAF); |
| 107 | this.lcafType = lcafType; |
| 108 | this.reserved2 = reserved2; |
| 109 | this.flag = flag; |
| 110 | this.length = length; |
| 111 | this.reserved1 = 0; |
| 112 | } |
| 113 | |
| 114 | /** |
| 115 | * Initializes LCAF address. |
| 116 | * |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 117 | * @param lcafType LCAF type |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 118 | * @param reserved2 reserved2 field |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 119 | * @param length length field |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 120 | */ |
| 121 | protected LispLcafAddress(LispCanonicalAddressFormatEnum lcafType, |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 122 | byte reserved2, short length) { |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 123 | super(AddressFamilyIdentifierEnum.LCAF); |
| 124 | this.lcafType = lcafType; |
| 125 | this.reserved2 = reserved2; |
| 126 | this.length = length; |
| 127 | this.reserved1 = 0; |
| 128 | this.flag = 0; |
| 129 | } |
| 130 | |
| 131 | /** |
| 132 | * Initializes LCAF address. |
| 133 | * |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 134 | * @param lcafType LCAF type |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 135 | * @param reserved2 reserved2 field |
| 136 | */ |
| 137 | protected LispLcafAddress(LispCanonicalAddressFormatEnum lcafType, byte reserved2) { |
| 138 | super(AddressFamilyIdentifierEnum.LCAF); |
| 139 | this.lcafType = lcafType; |
| 140 | this.reserved2 = reserved2; |
| 141 | this.reserved1 = 0; |
| 142 | this.flag = 0; |
| 143 | this.length = 0; |
| 144 | } |
| 145 | |
| 146 | /** |
| 147 | * Initializes LCAF address. |
| 148 | * |
| 149 | * @param lcafType LCAF type |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 150 | * @param length length field |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 151 | */ |
| 152 | protected LispLcafAddress(LispCanonicalAddressFormatEnum lcafType, short length) { |
| 153 | super(AddressFamilyIdentifierEnum.LCAF); |
| 154 | this.lcafType = lcafType; |
| 155 | this.reserved1 = 0; |
| 156 | this.reserved2 = 0; |
| 157 | this.flag = 0; |
| 158 | this.length = length; |
| 159 | } |
| 160 | |
| 161 | /** |
| 162 | * Initializes LCAF address. |
| 163 | * |
| 164 | * @param lcafType LCAF type |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 165 | */ |
| 166 | protected LispLcafAddress(LispCanonicalAddressFormatEnum lcafType) { |
| 167 | super(AddressFamilyIdentifierEnum.LCAF); |
| 168 | this.lcafType = lcafType; |
| 169 | this.reserved1 = 0; |
| 170 | this.reserved2 = 0; |
| 171 | this.flag = 0; |
| 172 | this.length = 0; |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 173 | } |
| 174 | |
| 175 | /** |
| 176 | * Obtains LCAF type. |
| 177 | * |
| 178 | * @return LCAF type |
| 179 | */ |
| 180 | public LispCanonicalAddressFormatEnum getType() { |
| 181 | return lcafType; |
| 182 | } |
| 183 | |
| 184 | /** |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 185 | * Obtains LCAF reserved1 value. |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 186 | * |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 187 | * @return LCAF reserved1 value |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 188 | */ |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 189 | public byte getReserved1() { |
| 190 | return reserved1; |
| 191 | } |
| 192 | |
| 193 | /** |
| 194 | * Obtains LCAF reserved2 value. |
| 195 | * |
| 196 | * @return LCAF reserved2 value |
| 197 | */ |
| 198 | public byte getReserved2() { |
| 199 | return reserved2; |
| 200 | } |
| 201 | |
| 202 | /** |
| 203 | * Obtains LCAF flag value. |
| 204 | * |
| 205 | * @return LCAF flag value |
| 206 | */ |
| 207 | public byte getFlag() { |
| 208 | return flag; |
| 209 | } |
| 210 | |
| 211 | /** |
| 212 | * Obtains LCAF length value. |
| 213 | * |
| 214 | * @return LCAF length value |
| 215 | */ |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 216 | public short getLength() { |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 217 | return length; |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 218 | } |
| 219 | |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 220 | /** |
| 221 | * Deserializes common fields from byte buffer. |
| 222 | * |
| 223 | * @param byteBuf byte buffer |
| 224 | * @return LispLcafAddress with filled common data fields |
| 225 | */ |
| 226 | public static LispLcafAddress deserializeCommon(ByteBuf byteBuf) { |
| 227 | |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 228 | // let's skip first and second two bytes
, |
| 229 | // because it represents LCAF AFI code |
| 230 | byteBuf.skipBytes(LCAF_AFI_CODE_BYTE_LENGTH); |
| 231 | |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 232 | // reserved1 -> 8 bits |
| 233 | byte reserved1 = (byte) byteBuf.readUnsignedByte(); |
| 234 | |
| 235 | // flags -> 8 bits |
| 236 | byte flag = (byte) byteBuf.readUnsignedByte(); |
| 237 | |
| 238 | // LCAF type -> 8 bits |
| 239 | byte lcafType = (byte) byteBuf.readUnsignedByte(); |
| 240 | |
| 241 | // reserved2 -> 8bits |
| 242 | byte reserved2 = (byte) byteBuf.readUnsignedByte(); |
| 243 | |
| 244 | // length -> 16 bits |
| 245 | short length = (short) byteBuf.readUnsignedShort(); |
| 246 | |
| 247 | return new LispLcafAddress(LispCanonicalAddressFormatEnum.valueOf(lcafType), |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 248 | reserved1, reserved2, flag, length); |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 249 | } |
| 250 | |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 251 | /** |
Jian Li | ef0f723 | 2016-11-15 19:55:46 +0900 | [diff] [blame] | 252 | * Updates the header length field value based on the size of LISP header. |
| 253 | * |
| 254 | * @param lcafIndex the index of LCAF address, because LCAF address is |
| 255 | * contained inside LISP control message, so to correctly |
| 256 | * find the right LCAF length index, we need to know the |
| 257 | * absolute lcaf index inside LISP control message byte buf |
| 258 | * @param byteBuf netty byte buffer |
| 259 | */ |
| 260 | public static void updateLength(int lcafIndex, ByteBuf byteBuf) { |
yoonseon | 980cd7c | 2016-11-18 14:18:46 -0800 | [diff] [blame] | 261 | byteBuf.setByte(lcafIndex + LENGTH_FIELD_INDEX, |
| 262 | byteBuf.writerIndex() - COMMON_HEADER_SIZE - lcafIndex); |
Jian Li | ef0f723 | 2016-11-15 19:55:46 +0900 | [diff] [blame] | 263 | } |
| 264 | |
| 265 | /** |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 266 | * Serializes common fields to byte buffer. |
| 267 | * |
| 268 | * @param byteBuf byte buffer |
| 269 | * @param address LISP LCAF address instance |
| 270 | */ |
| 271 | public static void serializeCommon(ByteBuf byteBuf, LispLcafAddress address) { |
Jian Li | ef0f723 | 2016-11-15 19:55:46 +0900 | [diff] [blame] | 272 | |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 273 | byteBuf.writeShort(AddressFamilyIdentifierEnum.LCAF.getIanaCode()); |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 274 | byteBuf.writeByte(address.getReserved1()); |
| 275 | byteBuf.writeByte(address.getFlag()); |
| 276 | byteBuf.writeByte(address.getType().getLispCode()); |
| 277 | byteBuf.writeByte(address.getReserved2()); |
| 278 | byteBuf.writeShort(address.getLength()); |
| 279 | } |
| 280 | |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 281 | @Override |
| 282 | public int hashCode() { |
Jian Li | d56f97e | 2016-07-19 15:48:15 +0900 | [diff] [blame] | 283 | return Objects.hash(lcafType, reserved1, reserved2, flag, length); |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 284 | } |
| 285 | |
| 286 | @Override |
| 287 | public boolean equals(Object obj) { |
| 288 | if (this == obj) { |
| 289 | return true; |
| 290 | } |
| 291 | |
| 292 | if (obj instanceof LispLcafAddress) { |
| 293 | final LispLcafAddress other = (LispLcafAddress) obj; |
| 294 | return Objects.equals(this.lcafType, other.lcafType) && |
Jian Li | b9e1ac7 | 2016-11-07 21:15:17 +0900 | [diff] [blame] | 295 | Objects.equals(this.reserved1, other.reserved1) && |
| 296 | Objects.equals(this.reserved2, other.reserved2) && |
| 297 | Objects.equals(this.flag, other.flag) && |
| 298 | Objects.equals(this.length, other.length); |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 299 | } |
| 300 | return false; |
| 301 | } |
| 302 | |
| 303 | @Override |
| 304 | public String toString() { |
| 305 | return toStringHelper(this) |
| 306 | .add("lcafType", lcafType) |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 307 | .add("reserved1", reserved1) |
| 308 | .add("reserved2", reserved2) |
| 309 | .add("flag", flag) |
| 310 | .add("length", length) |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 311 | .toString(); |
| 312 | } |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 313 | |
| 314 | protected static class LcafAddressBuilder<T> { |
| 315 | |
| 316 | protected byte reserved1; |
| 317 | protected byte flag; |
| 318 | protected byte lcafType; |
| 319 | protected byte reserved2; |
| 320 | protected short length; |
| 321 | |
| 322 | /** |
| 323 | * Sets reserved1 value. |
| 324 | * |
| 325 | * @param reserved1 reserved1 value |
| 326 | * @return LcafAddressBuilder object |
| 327 | */ |
| 328 | public T withReserved1(byte reserved1) { |
| 329 | this.reserved1 = reserved1; |
| 330 | return (T) this; |
| 331 | } |
| 332 | |
| 333 | /** |
| 334 | * Sets flag. |
| 335 | * |
| 336 | * @param flag flag boolean |
| 337 | * @return LcafAddressBuilder object |
| 338 | */ |
| 339 | public T withFlag(byte flag) { |
| 340 | this.flag = flag; |
| 341 | return (T) this; |
| 342 | } |
| 343 | |
| 344 | /** |
| 345 | * Sets LCAF type. |
| 346 | * |
| 347 | * @param lcafType LCAF type |
| 348 | * @return LcafAddressBuilder object |
| 349 | */ |
| 350 | public T withLcafType(byte lcafType) { |
| 351 | this.lcafType = lcafType; |
| 352 | return (T) this; |
| 353 | } |
| 354 | |
| 355 | /** |
| 356 | * Sets reserved2 value. |
| 357 | * |
| 358 | * @param reserved2 reserved2 value |
| 359 | * @return LcafAddressBuilder object |
| 360 | */ |
| 361 | public T withReserved2(byte reserved2) { |
| 362 | this.reserved2 = reserved2; |
| 363 | return (T) this; |
| 364 | } |
| 365 | |
| 366 | /** |
| 367 | * Sets length value. |
| 368 | * |
| 369 | * @param length length value |
| 370 | * @return LcafAddressBuilder object |
| 371 | */ |
| 372 | public T withLength(short length) { |
| 373 | this.length = length; |
| 374 | return (T) this; |
| 375 | } |
| 376 | |
| 377 | /** |
| 378 | * Builds LispLcafAddress object. |
| 379 | * |
| 380 | * @return LispLcafAddress instance |
| 381 | */ |
| 382 | public LispLcafAddress build() { |
yoonseon | 980cd7c | 2016-11-18 14:18:46 -0800 | [diff] [blame] | 383 | return new LispLcafAddress(LispCanonicalAddressFormatEnum |
| 384 | .valueOf(lcafType), |
| 385 | reserved1, reserved2, flag, length); |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 386 | } |
| 387 | } |
| 388 | |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 389 | /** |
| 390 | * LISP LCAF reader class. |
| 391 | */ |
yoonseon | 980cd7c | 2016-11-18 14:18:46 -0800 | [diff] [blame] | 392 | public static class LcafAddressReader |
| 393 | implements LispAddressReader<LispLcafAddress> { |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 394 | |
| 395 | private static final int LCAF_TYPE_FIELD_INDEX = 4; |
| 396 | |
| 397 | @Override |
yoonseon | 980cd7c | 2016-11-18 14:18:46 -0800 | [diff] [blame] | 398 | public LispLcafAddress readFrom(ByteBuf byteBuf) |
| 399 | throws LispParseError, LispReaderException { |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 400 | |
| 401 | int index = byteBuf.readerIndex(); |
| 402 | |
| 403 | // LCAF type -> 8 bits |
Jian Li | 55ddcdb | 2016-11-21 17:04:01 +0900 | [diff] [blame] | 404 | byte lcafType = (byte) byteBuf.getUnsignedByte(index + LCAF_TYPE_FIELD_INDEX); |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 405 | |
| 406 | if (lcafType == APPLICATION_DATA.getLispCode()) { |
Jian Li | 55ddcdb | 2016-11-21 17:04:01 +0900 | [diff] [blame] | 407 | return new AppDataLcafAddressReader().readFrom(byteBuf); |
| 408 | } |
| 409 | |
| 410 | if (lcafType == NAT.getLispCode()) { |
| 411 | return new NatLcafAddressReader().readFrom(byteBuf); |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 412 | } |
| 413 | |
| 414 | if (lcafType == LIST.getLispCode()) { |
Jian Li | 55ddcdb | 2016-11-21 17:04:01 +0900 | [diff] [blame] | 415 | return new ListLcafAddressReader().readFrom(byteBuf); |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 416 | } |
| 417 | |
| 418 | if (lcafType == SEGMENT.getLispCode()) { |
Jian Li | 55ddcdb | 2016-11-21 17:04:01 +0900 | [diff] [blame] | 419 | return new SegmentLcafAddressReader().readFrom(byteBuf); |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 420 | } |
| 421 | |
| 422 | if (lcafType == SOURCE_DEST.getLispCode()) { |
Jian Li | 55ddcdb | 2016-11-21 17:04:01 +0900 | [diff] [blame] | 423 | return new SourceDestLcafAddressReader().readFrom(byteBuf); |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 424 | } |
| 425 | |
Jian Li | 99f83ef | 2016-11-03 19:14:25 +0100 | [diff] [blame] | 426 | if (lcafType == TRAFFIC_ENGINEERING.getLispCode()) { |
Jian Li | 55ddcdb | 2016-11-21 17:04:01 +0900 | [diff] [blame] | 427 | return new TeLcafAddressReader().readFrom(byteBuf); |
Jian Li | 99f83ef | 2016-11-03 19:14:25 +0100 | [diff] [blame] | 428 | } |
| 429 | |
Jian Li | d4e6370 | 2016-08-30 18:29:20 +0900 | [diff] [blame] | 430 | log.warn("Unsupported LCAF type, please specify a correct LCAF type"); |
| 431 | |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 432 | return null; |
| 433 | } |
| 434 | } |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 435 | |
| 436 | /** |
| 437 | * LISP LCAF address writer class. |
| 438 | */ |
yoonseon | 980cd7c | 2016-11-18 14:18:46 -0800 | [diff] [blame] | 439 | public static class LcafAddressWriter |
| 440 | implements LispAddressWriter<LispLcafAddress> { |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 441 | |
| 442 | @Override |
yoonseon | 980cd7c | 2016-11-18 14:18:46 -0800 | [diff] [blame] | 443 | public void writeTo(ByteBuf byteBuf, LispLcafAddress address) |
| 444 | throws LispWriterException { |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 445 | switch (address.getType()) { |
| 446 | case APPLICATION_DATA: |
Jian Li | 55ddcdb | 2016-11-21 17:04:01 +0900 | [diff] [blame] | 447 | new AppDataLcafAddressWriter().writeTo(byteBuf, |
| 448 | (LispAppDataLcafAddress) address); |
| 449 | break; |
| 450 | case NAT: |
| 451 | new NatLcafAddressWriter().writeTo(byteBuf, |
| 452 | (LispNatLcafAddress) address); |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 453 | break; |
| 454 | case LIST: |
Jian Li | 55ddcdb | 2016-11-21 17:04:01 +0900 | [diff] [blame] | 455 | new ListLcafAddressWriter().writeTo(byteBuf, |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 456 | (LispListLcafAddress) address); |
| 457 | break; |
| 458 | case SEGMENT: |
Jian Li | 55ddcdb | 2016-11-21 17:04:01 +0900 | [diff] [blame] | 459 | new SegmentLcafAddressWriter().writeTo(byteBuf, |
| 460 | (LispSegmentLcafAddress) address); |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 461 | break; |
| 462 | case SOURCE_DEST: |
Jian Li | 55ddcdb | 2016-11-21 17:04:01 +0900 | [diff] [blame] | 463 | new SourceDestLcafAddressWriter().writeTo(byteBuf, |
| 464 | (LispSourceDestLcafAddress) address); |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 465 | break; |
Jian Li | 99f83ef | 2016-11-03 19:14:25 +0100 | [diff] [blame] | 466 | case TRAFFIC_ENGINEERING: |
Jian Li | 55ddcdb | 2016-11-21 17:04:01 +0900 | [diff] [blame] | 467 | new TeLcafAddressWriter().writeTo(byteBuf, |
Jian Li | 99f83ef | 2016-11-03 19:14:25 +0100 | [diff] [blame] | 468 | (LispTeLcafAddress) address); |
| 469 | break; |
Jian Li | d4e6370 | 2016-08-30 18:29:20 +0900 | [diff] [blame] | 470 | default: |
| 471 | log.warn("Unsupported LCAF type, please specify a correct LCAF type"); |
| 472 | break; |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 473 | } |
| 474 | } |
| 475 | } |
Jian Li | 0959600 | 2016-07-15 17:46:49 +0900 | [diff] [blame] | 476 | } |