1 /* 2 * RFC 3720 (iSCSI) protocol data types 3 * 4 * Copyright (C) 2005 Dmitry Yusupov 5 * Copyright (C) 2005 Alex Aizman 6 * maintained by open-iscsi@googlegroups.com 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published 10 * by the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, but 14 * WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * General Public License for more details. 17 * 18 * See the file COPYING included with this distribution for more details. 19 */ 20 21 #ifndef ISCSI_PROTO_H 22 #define ISCSI_PROTO_H 23 24 #define ISCSI_DRAFT20_VERSION 0x00 25 26 /* default iSCSI listen port for incoming connections */ 27 #define ISCSI_LISTEN_PORT 3260 28 29 /* Padding word length */ 30 #define ISCSI_PAD_LEN 4 31 32 /* 33 * useful common(control and data pathes) macro 34 */ 35 #define ntoh24(p) (((p)[0] << 16) | ((p)[1] << 8) | ((p)[2])) 36 #define hton24(p, v) { \ 37 p[0] = (((v) >> 16) & 0xFF); \ 38 p[1] = (((v) >> 8) & 0xFF); \ 39 p[2] = ((v) & 0xFF); \ 40 } 41 #define zero_data(p) {p[0]=0;p[1]=0;p[2]=0;} 42 43 /* initiator tags; opaque for target */ 44 typedef uint32_t __bitwise__ itt_t; 45 /* below makes sense only for initiator that created this tag */ 46 #define build_itt(itt, id, age) ((__force itt_t)\ 47 ((itt) | ((id) << ISCSI_CID_SHIFT) | ((age) << ISCSI_AGE_SHIFT))) 48 #define get_itt(itt) ((__force uint32_t)(itt_t)(itt) & ISCSI_ITT_MASK) 49 #define RESERVED_ITT ((__force itt_t)0xffffffff) 50 51 /* 52 * iSCSI Template Message Header 53 */ 54 struct iscsi_hdr { 55 uint8_t opcode; 56 uint8_t flags; /* Final bit */ 57 uint8_t rsvd2[2]; 58 uint8_t hlength; /* AHSs total length */ 59 uint8_t dlength[3]; /* Data length */ 60 uint8_t lun[8]; 61 itt_t itt; /* Initiator Task Tag, opaque for target */ 62 __be32 ttt; /* Target Task Tag */ 63 __be32 statsn; 64 __be32 exp_statsn; 65 __be32 max_statsn; 66 uint8_t other[12]; 67 }; 68 69 /************************* RFC 3720 Begin *****************************/ 70 71 #define ISCSI_RESERVED_TAG 0xffffffff 72 73 /* Opcode encoding bits */ 74 #define ISCSI_OP_RETRY 0x80 75 #define ISCSI_OP_IMMEDIATE 0x40 76 #define ISCSI_OPCODE_MASK 0x3F 77 78 /* Initiator Opcode values */ 79 #define ISCSI_OP_NOOP_OUT 0x00 80 #define ISCSI_OP_SCSI_CMD 0x01 81 #define ISCSI_OP_SCSI_TMFUNC 0x02 82 #define ISCSI_OP_LOGIN 0x03 83 #define ISCSI_OP_TEXT 0x04 84 #define ISCSI_OP_SCSI_DATA_OUT 0x05 85 #define ISCSI_OP_LOGOUT 0x06 86 #define ISCSI_OP_SNACK 0x10 87 88 #define ISCSI_OP_VENDOR1_CMD 0x1c 89 #define ISCSI_OP_VENDOR2_CMD 0x1d 90 #define ISCSI_OP_VENDOR3_CMD 0x1e 91 #define ISCSI_OP_VENDOR4_CMD 0x1f 92 93 /* Target Opcode values */ 94 #define ISCSI_OP_NOOP_IN 0x20 95 #define ISCSI_OP_SCSI_CMD_RSP 0x21 96 #define ISCSI_OP_SCSI_TMFUNC_RSP 0x22 97 #define ISCSI_OP_LOGIN_RSP 0x23 98 #define ISCSI_OP_TEXT_RSP 0x24 99 #define ISCSI_OP_SCSI_DATA_IN 0x25 100 #define ISCSI_OP_LOGOUT_RSP 0x26 101 #define ISCSI_OP_R2T 0x31 102 #define ISCSI_OP_ASYNC_EVENT 0x32 103 #define ISCSI_OP_REJECT 0x3f 104 105 struct iscsi_ahs_hdr { 106 __be16 ahslength; 107 uint8_t ahstype; 108 uint8_t ahspec[5]; 109 }; 110 111 #define ISCSI_AHSTYPE_CDB 1 112 #define ISCSI_AHSTYPE_RLENGTH 2 113 114 /* iSCSI PDU Header */ 115 struct iscsi_cmd { 116 uint8_t opcode; 117 uint8_t flags; 118 __be16 rsvd2; 119 uint8_t hlength; 120 uint8_t dlength[3]; 121 uint8_t lun[8]; 122 itt_t itt; /* Initiator Task Tag */ 123 __be32 data_length; 124 __be32 cmdsn; 125 __be32 exp_statsn; 126 uint8_t cdb[16]; /* SCSI Command Block */ 127 /* Additional Data (Command Dependent) */ 128 }; 129 130 /* Command PDU flags */ 131 #define ISCSI_FLAG_CMD_FINAL 0x80 132 #define ISCSI_FLAG_CMD_READ 0x40 133 #define ISCSI_FLAG_CMD_WRITE 0x20 134 #define ISCSI_FLAG_CMD_ATTR_MASK 0x07 /* 3 bits */ 135 136 /* SCSI Command Attribute values */ 137 #define ISCSI_ATTR_UNTAGGED 0 138 #define ISCSI_ATTR_SIMPLE 1 139 #define ISCSI_ATTR_ORDERED 2 140 #define ISCSI_ATTR_HEAD_OF_QUEUE 3 141 #define ISCSI_ATTR_ACA 4 142 143 struct iscsi_rlength_ahdr { 144 __be16 ahslength; 145 uint8_t ahstype; 146 uint8_t reserved; 147 __be32 read_length; 148 }; 149 150 /* Extended CDB AHS */ 151 struct iscsi_ecdb_ahdr { 152 __be16 ahslength; /* CDB length - 15, including reserved byte */ 153 uint8_t ahstype; 154 uint8_t reserved; 155 uint8_t ecdb[260 - 16]; /* 4-byte aligned extended CDB spillover */ 156 }; 157 158 /* SCSI Response Header */ 159 struct iscsi_cmd_rsp { 160 uint8_t opcode; 161 uint8_t flags; 162 uint8_t response; 163 uint8_t cmd_status; 164 uint8_t hlength; 165 uint8_t dlength[3]; 166 uint8_t rsvd[8]; 167 itt_t itt; /* Initiator Task Tag */ 168 __be32 rsvd1; 169 __be32 statsn; 170 __be32 exp_cmdsn; 171 __be32 max_cmdsn; 172 __be32 exp_datasn; 173 __be32 bi_residual_count; 174 __be32 residual_count; 175 /* Response or Sense Data (optional) */ 176 }; 177 178 /* Command Response PDU flags */ 179 #define ISCSI_FLAG_CMD_BIDI_OVERFLOW 0x10 180 #define ISCSI_FLAG_CMD_BIDI_UNDERFLOW 0x08 181 #define ISCSI_FLAG_CMD_OVERFLOW 0x04 182 #define ISCSI_FLAG_CMD_UNDERFLOW 0x02 183 184 /* iSCSI Status values. Valid if Rsp Selector bit is not set */ 185 #define ISCSI_STATUS_CMD_COMPLETED 0 186 #define ISCSI_STATUS_TARGET_FAILURE 1 187 #define ISCSI_STATUS_SUBSYS_FAILURE 2 188 189 /* Asynchronous Event Header */ 190 struct iscsi_async { 191 uint8_t opcode; 192 uint8_t flags; 193 uint8_t rsvd2[2]; 194 uint8_t rsvd3; 195 uint8_t dlength[3]; 196 uint8_t lun[8]; 197 uint8_t rsvd4[8]; 198 __be32 statsn; 199 __be32 exp_cmdsn; 200 __be32 max_cmdsn; 201 uint8_t async_event; 202 uint8_t async_vcode; 203 __be16 param1; 204 __be16 param2; 205 __be16 param3; 206 uint8_t rsvd5[4]; 207 }; 208 209 /* iSCSI Event Codes */ 210 #define ISCSI_ASYNC_MSG_SCSI_EVENT 0 211 #define ISCSI_ASYNC_MSG_REQUEST_LOGOUT 1 212 #define ISCSI_ASYNC_MSG_DROPPING_CONNECTION 2 213 #define ISCSI_ASYNC_MSG_DROPPING_ALL_CONNECTIONS 3 214 #define ISCSI_ASYNC_MSG_PARAM_NEGOTIATION 4 215 #define ISCSI_ASYNC_MSG_VENDOR_SPECIFIC 255 216 217 /* NOP-Out Message */ 218 struct iscsi_nopout { 219 uint8_t opcode; 220 uint8_t flags; 221 __be16 rsvd2; 222 uint8_t rsvd3; 223 uint8_t dlength[3]; 224 uint8_t lun[8]; 225 itt_t itt; /* Initiator Task Tag */ 226 __be32 ttt; /* Target Transfer Tag */ 227 __be32 cmdsn; 228 __be32 exp_statsn; 229 uint8_t rsvd4[16]; 230 }; 231 232 /* NOP-In Message */ 233 struct iscsi_nopin { 234 uint8_t opcode; 235 uint8_t flags; 236 __be16 rsvd2; 237 uint8_t rsvd3; 238 uint8_t dlength[3]; 239 uint8_t lun[8]; 240 itt_t itt; /* Initiator Task Tag */ 241 __be32 ttt; /* Target Transfer Tag */ 242 __be32 statsn; 243 __be32 exp_cmdsn; 244 __be32 max_cmdsn; 245 uint8_t rsvd4[12]; 246 }; 247 248 /* SCSI Task Management Message Header */ 249 struct iscsi_tm { 250 uint8_t opcode; 251 uint8_t flags; 252 uint8_t rsvd1[2]; 253 uint8_t hlength; 254 uint8_t dlength[3]; 255 uint8_t lun[8]; 256 itt_t itt; /* Initiator Task Tag */ 257 itt_t rtt; /* Reference Task Tag */ 258 __be32 cmdsn; 259 __be32 exp_statsn; 260 __be32 refcmdsn; 261 __be32 exp_datasn; 262 uint8_t rsvd2[8]; 263 }; 264 265 #define ISCSI_FLAG_TM_FUNC_MASK 0x7F 266 267 /* Function values */ 268 #define ISCSI_TM_FUNC_ABORT_TASK 1 269 #define ISCSI_TM_FUNC_ABORT_TASK_SET 2 270 #define ISCSI_TM_FUNC_CLEAR_ACA 3 271 #define ISCSI_TM_FUNC_CLEAR_TASK_SET 4 272 #define ISCSI_TM_FUNC_LOGICAL_UNIT_RESET 5 273 #define ISCSI_TM_FUNC_TARGET_WARM_RESET 6 274 #define ISCSI_TM_FUNC_TARGET_COLD_RESET 7 275 #define ISCSI_TM_FUNC_TASK_REASSIGN 8 276 277 /* SCSI Task Management Response Header */ 278 struct iscsi_tm_rsp { 279 uint8_t opcode; 280 uint8_t flags; 281 uint8_t response; /* see Response values below */ 282 uint8_t qualifier; 283 uint8_t hlength; 284 uint8_t dlength[3]; 285 uint8_t rsvd2[8]; 286 itt_t itt; /* Initiator Task Tag */ 287 itt_t rtt; /* Reference Task Tag */ 288 __be32 statsn; 289 __be32 exp_cmdsn; 290 __be32 max_cmdsn; 291 uint8_t rsvd3[12]; 292 }; 293 294 /* Response values */ 295 #define ISCSI_TMF_RSP_COMPLETE 0x00 296 #define ISCSI_TMF_RSP_NO_TASK 0x01 297 #define ISCSI_TMF_RSP_NO_LUN 0x02 298 #define ISCSI_TMF_RSP_TASK_ALLEGIANT 0x03 299 #define ISCSI_TMF_RSP_NO_FAILOVER 0x04 300 #define ISCSI_TMF_RSP_NOT_SUPPORTED 0x05 301 #define ISCSI_TMF_RSP_AUTH_FAILED 0x06 302 #define ISCSI_TMF_RSP_REJECTED 0xff 303 304 /* Ready To Transfer Header */ 305 struct iscsi_r2t_rsp { 306 uint8_t opcode; 307 uint8_t flags; 308 uint8_t rsvd2[2]; 309 uint8_t hlength; 310 uint8_t dlength[3]; 311 uint8_t lun[8]; 312 itt_t itt; /* Initiator Task Tag */ 313 __be32 ttt; /* Target Transfer Tag */ 314 __be32 statsn; 315 __be32 exp_cmdsn; 316 __be32 max_cmdsn; 317 __be32 r2tsn; 318 __be32 data_offset; 319 __be32 data_length; 320 }; 321 322 /* SCSI Data Hdr */ 323 struct iscsi_data { 324 uint8_t opcode; 325 uint8_t flags; 326 uint8_t rsvd2[2]; 327 uint8_t rsvd3; 328 uint8_t dlength[3]; 329 uint8_t lun[8]; 330 itt_t itt; 331 __be32 ttt; 332 __be32 rsvd4; 333 __be32 exp_statsn; 334 __be32 rsvd5; 335 __be32 datasn; 336 __be32 offset; 337 __be32 rsvd6; 338 /* Payload */ 339 }; 340 341 /* SCSI Data Response Hdr */ 342 struct iscsi_data_rsp { 343 uint8_t opcode; 344 uint8_t flags; 345 uint8_t rsvd2; 346 uint8_t cmd_status; 347 uint8_t hlength; 348 uint8_t dlength[3]; 349 uint8_t lun[8]; 350 itt_t itt; 351 __be32 ttt; 352 __be32 statsn; 353 __be32 exp_cmdsn; 354 __be32 max_cmdsn; 355 __be32 datasn; 356 __be32 offset; 357 __be32 residual_count; 358 }; 359 360 /* Data Response PDU flags */ 361 #define ISCSI_FLAG_DATA_ACK 0x40 362 #define ISCSI_FLAG_DATA_OVERFLOW 0x04 363 #define ISCSI_FLAG_DATA_UNDERFLOW 0x02 364 #define ISCSI_FLAG_DATA_STATUS 0x01 365 366 /* Text Header */ 367 struct iscsi_text { 368 uint8_t opcode; 369 uint8_t flags; 370 uint8_t rsvd2[2]; 371 uint8_t hlength; 372 uint8_t dlength[3]; 373 uint8_t rsvd4[8]; 374 itt_t itt; 375 __be32 ttt; 376 __be32 cmdsn; 377 __be32 exp_statsn; 378 uint8_t rsvd5[16]; 379 /* Text - key=value pairs */ 380 }; 381 382 #define ISCSI_FLAG_TEXT_CONTINUE 0x40 383 384 /* Text Response Header */ 385 struct iscsi_text_rsp { 386 uint8_t opcode; 387 uint8_t flags; 388 uint8_t rsvd2[2]; 389 uint8_t hlength; 390 uint8_t dlength[3]; 391 uint8_t rsvd4[8]; 392 itt_t itt; 393 __be32 ttt; 394 __be32 statsn; 395 __be32 exp_cmdsn; 396 __be32 max_cmdsn; 397 uint8_t rsvd5[12]; 398 /* Text Response - key:value pairs */ 399 }; 400 401 /* Login Header */ 402 struct iscsi_login { 403 uint8_t opcode; 404 uint8_t flags; 405 uint8_t max_version; /* Max. version supported */ 406 uint8_t min_version; /* Min. version supported */ 407 uint8_t hlength; 408 uint8_t dlength[3]; 409 uint8_t isid[6]; /* Initiator Session ID */ 410 __be16 tsih; /* Target Session Handle */ 411 itt_t itt; /* Initiator Task Tag */ 412 __be16 cid; 413 __be16 rsvd3; 414 __be32 cmdsn; 415 __be32 exp_statsn; 416 uint8_t rsvd5[16]; 417 }; 418 419 /* Login PDU flags */ 420 #define ISCSI_FLAG_LOGIN_TRANSIT 0x80 421 #define ISCSI_FLAG_LOGIN_CONTINUE 0x40 422 #define ISCSI_FLAG_LOGIN_CURRENT_STAGE_MASK 0x0C /* 2 bits */ 423 #define ISCSI_FLAG_LOGIN_NEXT_STAGE_MASK 0x03 /* 2 bits */ 424 425 #define ISCSI_LOGIN_CURRENT_STAGE(flags) \ 426 ((flags & ISCSI_FLAG_LOGIN_CURRENT_STAGE_MASK) >> 2) 427 #define ISCSI_LOGIN_NEXT_STAGE(flags) \ 428 (flags & ISCSI_FLAG_LOGIN_NEXT_STAGE_MASK) 429 430 /* Login Response Header */ 431 struct iscsi_login_rsp { 432 uint8_t opcode; 433 uint8_t flags; 434 uint8_t max_version; /* Max. version supported */ 435 uint8_t active_version; /* Active version */ 436 uint8_t hlength; 437 uint8_t dlength[3]; 438 uint8_t isid[6]; /* Initiator Session ID */ 439 __be16 tsih; /* Target Session Handle */ 440 itt_t itt; /* Initiator Task Tag */ 441 __be32 rsvd3; 442 __be32 statsn; 443 __be32 exp_cmdsn; 444 __be32 max_cmdsn; 445 uint8_t status_class; /* see Login RSP ststus classes below */ 446 uint8_t status_detail; /* see Login RSP Status details below */ 447 uint8_t rsvd4[10]; 448 }; 449 450 /* Login stage (phase) codes for CSG, NSG */ 451 #define ISCSI_INITIAL_LOGIN_STAGE -1 452 #define ISCSI_SECURITY_NEGOTIATION_STAGE 0 453 #define ISCSI_OP_PARMS_NEGOTIATION_STAGE 1 454 #define ISCSI_FULL_FEATURE_PHASE 3 455 456 /* Login Status response classes */ 457 #define ISCSI_STATUS_CLS_SUCCESS 0x00 458 #define ISCSI_STATUS_CLS_REDIRECT 0x01 459 #define ISCSI_STATUS_CLS_INITIATOR_ERR 0x02 460 #define ISCSI_STATUS_CLS_TARGET_ERR 0x03 461 462 /* Login Status response detail codes */ 463 /* Class-0 (Success) */ 464 #define ISCSI_LOGIN_STATUS_ACCEPT 0x00 465 466 /* Class-1 (Redirection) */ 467 #define ISCSI_LOGIN_STATUS_TGT_MOVED_TEMP 0x01 468 #define ISCSI_LOGIN_STATUS_TGT_MOVED_PERM 0x02 469 470 /* Class-2 (Initiator Error) */ 471 #define ISCSI_LOGIN_STATUS_INIT_ERR 0x00 472 #define ISCSI_LOGIN_STATUS_AUTH_FAILED 0x01 473 #define ISCSI_LOGIN_STATUS_TGT_FORBIDDEN 0x02 474 #define ISCSI_LOGIN_STATUS_TGT_NOT_FOUND 0x03 475 #define ISCSI_LOGIN_STATUS_TGT_REMOVED 0x04 476 #define ISCSI_LOGIN_STATUS_NO_VERSION 0x05 477 #define ISCSI_LOGIN_STATUS_ISID_ERROR 0x06 478 #define ISCSI_LOGIN_STATUS_MISSING_FIELDS 0x07 479 #define ISCSI_LOGIN_STATUS_CONN_ADD_FAILED 0x08 480 #define ISCSI_LOGIN_STATUS_NO_SESSION_TYPE 0x09 481 #define ISCSI_LOGIN_STATUS_NO_SESSION 0x0a 482 #define ISCSI_LOGIN_STATUS_INVALID_REQUEST 0x0b 483 484 /* Class-3 (Target Error) */ 485 #define ISCSI_LOGIN_STATUS_TARGET_ERROR 0x00 486 #define ISCSI_LOGIN_STATUS_SVC_UNAVAILABLE 0x01 487 #define ISCSI_LOGIN_STATUS_NO_RESOURCES 0x02 488 489 /* Logout Header */ 490 struct iscsi_logout { 491 uint8_t opcode; 492 uint8_t flags; 493 uint8_t rsvd1[2]; 494 uint8_t hlength; 495 uint8_t dlength[3]; 496 uint8_t rsvd2[8]; 497 itt_t itt; /* Initiator Task Tag */ 498 __be16 cid; 499 uint8_t rsvd3[2]; 500 __be32 cmdsn; 501 __be32 exp_statsn; 502 uint8_t rsvd4[16]; 503 }; 504 505 /* Logout PDU flags */ 506 #define ISCSI_FLAG_LOGOUT_REASON_MASK 0x7F 507 508 /* logout reason_code values */ 509 510 #define ISCSI_LOGOUT_REASON_CLOSE_SESSION 0 511 #define ISCSI_LOGOUT_REASON_CLOSE_CONNECTION 1 512 #define ISCSI_LOGOUT_REASON_RECOVERY 2 513 #define ISCSI_LOGOUT_REASON_AEN_REQUEST 3 514 515 /* Logout Response Header */ 516 struct iscsi_logout_rsp { 517 uint8_t opcode; 518 uint8_t flags; 519 uint8_t response; /* see Logout response values below */ 520 uint8_t rsvd2; 521 uint8_t hlength; 522 uint8_t dlength[3]; 523 uint8_t rsvd3[8]; 524 itt_t itt; /* Initiator Task Tag */ 525 __be32 rsvd4; 526 __be32 statsn; 527 __be32 exp_cmdsn; 528 __be32 max_cmdsn; 529 __be32 rsvd5; 530 __be16 t2wait; 531 __be16 t2retain; 532 __be32 rsvd6; 533 }; 534 535 /* logout response status values */ 536 537 #define ISCSI_LOGOUT_SUCCESS 0 538 #define ISCSI_LOGOUT_CID_NOT_FOUND 1 539 #define ISCSI_LOGOUT_RECOVERY_UNSUPPORTED 2 540 #define ISCSI_LOGOUT_CLEANUP_FAILED 3 541 542 /* SNACK Header */ 543 struct iscsi_snack { 544 uint8_t opcode; 545 uint8_t flags; 546 uint8_t rsvd2[14]; 547 itt_t itt; 548 __be32 begrun; 549 __be32 runlength; 550 __be32 exp_statsn; 551 __be32 rsvd3; 552 __be32 exp_datasn; 553 uint8_t rsvd6[8]; 554 }; 555 556 /* SNACK PDU flags */ 557 #define ISCSI_FLAG_SNACK_TYPE_MASK 0x0F /* 4 bits */ 558 559 /* Reject Message Header */ 560 struct iscsi_reject { 561 uint8_t opcode; 562 uint8_t flags; 563 uint8_t reason; 564 uint8_t rsvd2; 565 uint8_t hlength; 566 uint8_t dlength[3]; 567 uint8_t rsvd3[8]; 568 __be32 ffffffff; 569 uint8_t rsvd4[4]; 570 __be32 statsn; 571 __be32 exp_cmdsn; 572 __be32 max_cmdsn; 573 __be32 datasn; 574 uint8_t rsvd5[8]; 575 /* Text - Rejected hdr */ 576 }; 577 578 /* Reason for Reject */ 579 #define ISCSI_REASON_CMD_BEFORE_LOGIN 1 580 #define ISCSI_REASON_DATA_DIGEST_ERROR 2 581 #define ISCSI_REASON_DATA_SNACK_REJECT 3 582 #define ISCSI_REASON_PROTOCOL_ERROR 4 583 #define ISCSI_REASON_CMD_NOT_SUPPORTED 5 584 #define ISCSI_REASON_IMM_CMD_REJECT 6 585 #define ISCSI_REASON_TASK_IN_PROGRESS 7 586 #define ISCSI_REASON_INVALID_SNACK 8 587 #define ISCSI_REASON_BOOKMARK_INVALID 9 588 #define ISCSI_REASON_BOOKMARK_NO_RESOURCES 10 589 #define ISCSI_REASON_NEGOTIATION_RESET 11 590 591 /* Max. number of Key=Value pairs in a text message */ 592 #define MAX_KEY_VALUE_PAIRS 8192 593 594 /* maximum length for text keys/values */ 595 #define KEY_MAXLEN 64 596 #define VALUE_MAXLEN 255 597 #define TARGET_NAME_MAXLEN VALUE_MAXLEN 598 599 #define ISCSI_DEF_MAX_RECV_SEG_LEN 8192 600 #define ISCSI_MIN_MAX_RECV_SEG_LEN 512 601 #define ISCSI_MAX_MAX_RECV_SEG_LEN 16777215 602 603 #define ISCSI_DEF_FIRST_BURST_LEN 65536 604 #define ISCSI_MIN_FIRST_BURST_LEN 512 605 #define ISCSI_MAX_FIRST_BURST_LEN 16777215 606 607 #define ISCSI_DEF_MAX_BURST_LEN 262144 608 #define ISCSI_MIN_MAX_BURST_LEN 512 609 #define ISCSI_MAX_MAX_BURST_LEN 16777215 610 611 #define ISCSI_DEF_TIME2WAIT 2 612 613 /************************* RFC 3720 End *****************************/ 614 615 #endif /* ISCSI_PROTO_H */ 616