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/include/scsi/iscsi_proto.h

https://bitbucket.org/thekraven/iscream_thunderc-2.6.35
C++ Header | 622 lines | 469 code | 70 blank | 83 comment | 0 complexity | 7701c87405c1267435ca77a323cd391f MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
  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#include <linux/types.h>
 25#include <scsi/scsi.h>
 26
 27#define ISCSI_DRAFT20_VERSION	0x00
 28
 29/* default iSCSI listen port for incoming connections */
 30#define ISCSI_LISTEN_PORT	3260
 31
 32/* Padding word length */
 33#define ISCSI_PAD_LEN		4
 34
 35/*
 36 * useful common(control and data pathes) macro
 37 */
 38#define ntoh24(p) (((p)[0] << 16) | ((p)[1] << 8) | ((p)[2]))
 39#define hton24(p, v) { \
 40        p[0] = (((v) >> 16) & 0xFF); \
 41        p[1] = (((v) >> 8) & 0xFF); \
 42        p[2] = ((v) & 0xFF); \
 43}
 44#define zero_data(p) {p[0]=0;p[1]=0;p[2]=0;}
 45
 46/* initiator tags; opaque for target */
 47typedef uint32_t __bitwise__ itt_t;
 48/* below makes sense only for initiator that created this tag */
 49#define build_itt(itt, age) ((__force itt_t)\
 50	((itt) | ((age) << ISCSI_AGE_SHIFT)))
 51#define get_itt(itt) ((__force uint32_t)(itt_t)(itt) & ISCSI_ITT_MASK)
 52#define RESERVED_ITT ((__force itt_t)0xffffffff)
 53
 54/*
 55 * iSCSI Template Message Header
 56 */
 57struct iscsi_hdr {
 58	uint8_t		opcode;
 59	uint8_t		flags;		/* Final bit */
 60	uint8_t		rsvd2[2];
 61	uint8_t		hlength;	/* AHSs total length */
 62	uint8_t		dlength[3];	/* Data length */
 63	uint8_t		lun[8];
 64	itt_t		itt;		/* Initiator Task Tag, opaque for target */
 65	__be32		ttt;		/* Target Task Tag */
 66	__be32		statsn;
 67	__be32		exp_statsn;
 68	__be32		max_statsn;
 69	uint8_t		other[12];
 70};
 71
 72/************************* RFC 3720 Begin *****************************/
 73
 74#define ISCSI_RESERVED_TAG		0xffffffff
 75
 76/* Opcode encoding bits */
 77#define ISCSI_OP_RETRY			0x80
 78#define ISCSI_OP_IMMEDIATE		0x40
 79#define ISCSI_OPCODE_MASK		0x3F
 80
 81/* Initiator Opcode values */
 82#define ISCSI_OP_NOOP_OUT		0x00
 83#define ISCSI_OP_SCSI_CMD		0x01
 84#define ISCSI_OP_SCSI_TMFUNC		0x02
 85#define ISCSI_OP_LOGIN			0x03
 86#define ISCSI_OP_TEXT			0x04
 87#define ISCSI_OP_SCSI_DATA_OUT		0x05
 88#define ISCSI_OP_LOGOUT			0x06
 89#define ISCSI_OP_SNACK			0x10
 90
 91#define ISCSI_OP_VENDOR1_CMD		0x1c
 92#define ISCSI_OP_VENDOR2_CMD		0x1d
 93#define ISCSI_OP_VENDOR3_CMD		0x1e
 94#define ISCSI_OP_VENDOR4_CMD		0x1f
 95
 96/* Target Opcode values */
 97#define ISCSI_OP_NOOP_IN		0x20
 98#define ISCSI_OP_SCSI_CMD_RSP		0x21
 99#define ISCSI_OP_SCSI_TMFUNC_RSP	0x22
100#define ISCSI_OP_LOGIN_RSP		0x23
101#define ISCSI_OP_TEXT_RSP		0x24
102#define ISCSI_OP_SCSI_DATA_IN		0x25
103#define ISCSI_OP_LOGOUT_RSP		0x26
104#define ISCSI_OP_R2T			0x31
105#define ISCSI_OP_ASYNC_EVENT		0x32
106#define ISCSI_OP_REJECT			0x3f
107
108struct iscsi_ahs_hdr {
109	__be16 ahslength;
110	uint8_t ahstype;
111	uint8_t ahspec[5];
112};
113
114#define ISCSI_AHSTYPE_CDB		1
115#define ISCSI_AHSTYPE_RLENGTH		2
116#define ISCSI_CDB_SIZE			16
117
118/* iSCSI PDU Header */
119struct iscsi_cmd {
120	uint8_t opcode;
121	uint8_t flags;
122	__be16 rsvd2;
123	uint8_t hlength;
124	uint8_t dlength[3];
125	uint8_t lun[8];
126	itt_t	 itt;	/* Initiator Task Tag */
127	__be32 data_length;
128	__be32 cmdsn;
129	__be32 exp_statsn;
130	uint8_t cdb[ISCSI_CDB_SIZE];	/* SCSI Command Block */
131	/* Additional Data (Command Dependent) */
132};
133
134/* Command PDU flags */
135#define ISCSI_FLAG_CMD_FINAL		0x80
136#define ISCSI_FLAG_CMD_READ		0x40
137#define ISCSI_FLAG_CMD_WRITE		0x20
138#define ISCSI_FLAG_CMD_ATTR_MASK	0x07	/* 3 bits */
139
140/* SCSI Command Attribute values */
141#define ISCSI_ATTR_UNTAGGED		0
142#define ISCSI_ATTR_SIMPLE		1
143#define ISCSI_ATTR_ORDERED		2
144#define ISCSI_ATTR_HEAD_OF_QUEUE	3
145#define ISCSI_ATTR_ACA			4
146
147struct iscsi_rlength_ahdr {
148	__be16 ahslength;
149	uint8_t ahstype;
150	uint8_t reserved;
151	__be32 read_length;
152};
153
154/* Extended CDB AHS */
155struct iscsi_ecdb_ahdr {
156	__be16 ahslength;	/* CDB length - 15, including reserved byte */
157	uint8_t ahstype;
158	uint8_t reserved;
159	/* 4-byte aligned extended CDB spillover */
160	uint8_t ecdb[SCSI_MAX_VARLEN_CDB_SIZE - ISCSI_CDB_SIZE];
161};
162
163/* SCSI Response Header */
164struct iscsi_cmd_rsp {
165	uint8_t opcode;
166	uint8_t flags;
167	uint8_t response;
168	uint8_t cmd_status;
169	uint8_t hlength;
170	uint8_t dlength[3];
171	uint8_t rsvd[8];
172	itt_t	 itt;	/* Initiator Task Tag */
173	__be32	rsvd1;
174	__be32	statsn;
175	__be32	exp_cmdsn;
176	__be32	max_cmdsn;
177	__be32	exp_datasn;
178	__be32	bi_residual_count;
179	__be32	residual_count;
180	/* Response or Sense Data (optional) */
181};
182
183/* Command Response PDU flags */
184#define ISCSI_FLAG_CMD_BIDI_OVERFLOW	0x10
185#define ISCSI_FLAG_CMD_BIDI_UNDERFLOW	0x08
186#define ISCSI_FLAG_CMD_OVERFLOW		0x04
187#define ISCSI_FLAG_CMD_UNDERFLOW	0x02
188
189/* iSCSI Status values. Valid if Rsp Selector bit is not set */
190#define ISCSI_STATUS_CMD_COMPLETED	0
191#define ISCSI_STATUS_TARGET_FAILURE	1
192#define ISCSI_STATUS_SUBSYS_FAILURE	2
193
194/* Asynchronous Event Header */
195struct iscsi_async {
196	uint8_t opcode;
197	uint8_t flags;
198	uint8_t rsvd2[2];
199	uint8_t rsvd3;
200	uint8_t dlength[3];
201	uint8_t lun[8];
202	uint8_t rsvd4[8];
203	__be32	statsn;
204	__be32	exp_cmdsn;
205	__be32	max_cmdsn;
206	uint8_t async_event;
207	uint8_t async_vcode;
208	__be16	param1;
209	__be16	param2;
210	__be16	param3;
211	uint8_t rsvd5[4];
212};
213
214/* iSCSI Event Codes */
215#define ISCSI_ASYNC_MSG_SCSI_EVENT			0
216#define ISCSI_ASYNC_MSG_REQUEST_LOGOUT			1
217#define ISCSI_ASYNC_MSG_DROPPING_CONNECTION		2
218#define ISCSI_ASYNC_MSG_DROPPING_ALL_CONNECTIONS	3
219#define ISCSI_ASYNC_MSG_PARAM_NEGOTIATION		4
220#define ISCSI_ASYNC_MSG_VENDOR_SPECIFIC			255
221
222/* NOP-Out Message */
223struct iscsi_nopout {
224	uint8_t opcode;
225	uint8_t flags;
226	__be16	rsvd2;
227	uint8_t rsvd3;
228	uint8_t dlength[3];
229	uint8_t lun[8];
230	itt_t	 itt;	/* Initiator Task Tag */
231	__be32	ttt;	/* Target Transfer Tag */
232	__be32	cmdsn;
233	__be32	exp_statsn;
234	uint8_t rsvd4[16];
235};
236
237/* NOP-In Message */
238struct iscsi_nopin {
239	uint8_t opcode;
240	uint8_t flags;
241	__be16	rsvd2;
242	uint8_t rsvd3;
243	uint8_t dlength[3];
244	uint8_t lun[8];
245	itt_t	 itt;	/* Initiator Task Tag */
246	__be32	ttt;	/* Target Transfer Tag */
247	__be32	statsn;
248	__be32	exp_cmdsn;
249	__be32	max_cmdsn;
250	uint8_t rsvd4[12];
251};
252
253/* SCSI Task Management Message Header */
254struct iscsi_tm {
255	uint8_t opcode;
256	uint8_t flags;
257	uint8_t rsvd1[2];
258	uint8_t hlength;
259	uint8_t dlength[3];
260	uint8_t lun[8];
261	itt_t	 itt;	/* Initiator Task Tag */
262	itt_t	 rtt;	/* Reference Task Tag */
263	__be32	cmdsn;
264	__be32	exp_statsn;
265	__be32	refcmdsn;
266	__be32	exp_datasn;
267	uint8_t rsvd2[8];
268};
269
270#define ISCSI_FLAG_TM_FUNC_MASK			0x7F
271
272/* Function values */
273#define ISCSI_TM_FUNC_ABORT_TASK		1
274#define ISCSI_TM_FUNC_ABORT_TASK_SET		2
275#define ISCSI_TM_FUNC_CLEAR_ACA			3
276#define ISCSI_TM_FUNC_CLEAR_TASK_SET		4
277#define ISCSI_TM_FUNC_LOGICAL_UNIT_RESET	5
278#define ISCSI_TM_FUNC_TARGET_WARM_RESET		6
279#define ISCSI_TM_FUNC_TARGET_COLD_RESET		7
280#define ISCSI_TM_FUNC_TASK_REASSIGN		8
281
282#define ISCSI_TM_FUNC_VALUE(hdr) ((hdr)->flags & ISCSI_FLAG_TM_FUNC_MASK)
283
284/* SCSI Task Management Response Header */
285struct iscsi_tm_rsp {
286	uint8_t opcode;
287	uint8_t flags;
288	uint8_t response;	/* see Response values below */
289	uint8_t qualifier;
290	uint8_t hlength;
291	uint8_t dlength[3];
292	uint8_t rsvd2[8];
293	itt_t	 itt;	/* Initiator Task Tag */
294	itt_t	 rtt;	/* Reference Task Tag */
295	__be32	statsn;
296	__be32	exp_cmdsn;
297	__be32	max_cmdsn;
298	uint8_t rsvd3[12];
299};
300
301/* Response values */
302#define ISCSI_TMF_RSP_COMPLETE		0x00
303#define ISCSI_TMF_RSP_NO_TASK		0x01
304#define ISCSI_TMF_RSP_NO_LUN		0x02
305#define ISCSI_TMF_RSP_TASK_ALLEGIANT	0x03
306#define ISCSI_TMF_RSP_NO_FAILOVER	0x04
307#define ISCSI_TMF_RSP_NOT_SUPPORTED	0x05
308#define ISCSI_TMF_RSP_AUTH_FAILED	0x06
309#define ISCSI_TMF_RSP_REJECTED		0xff
310
311/* Ready To Transfer Header */
312struct iscsi_r2t_rsp {
313	uint8_t opcode;
314	uint8_t flags;
315	uint8_t rsvd2[2];
316	uint8_t	hlength;
317	uint8_t	dlength[3];
318	uint8_t lun[8];
319	itt_t	 itt;	/* Initiator Task Tag */
320	__be32	ttt;	/* Target Transfer Tag */
321	__be32	statsn;
322	__be32	exp_cmdsn;
323	__be32	max_cmdsn;
324	__be32	r2tsn;
325	__be32	data_offset;
326	__be32	data_length;
327};
328
329/* SCSI Data Hdr */
330struct iscsi_data {
331	uint8_t opcode;
332	uint8_t flags;
333	uint8_t rsvd2[2];
334	uint8_t rsvd3;
335	uint8_t dlength[3];
336	uint8_t lun[8];
337	itt_t	 itt;
338	__be32	ttt;
339	__be32	rsvd4;
340	__be32	exp_statsn;
341	__be32	rsvd5;
342	__be32	datasn;
343	__be32	offset;
344	__be32	rsvd6;
345	/* Payload */
346};
347
348/* SCSI Data Response Hdr */
349struct iscsi_data_rsp {
350	uint8_t opcode;
351	uint8_t flags;
352	uint8_t rsvd2;
353	uint8_t cmd_status;
354	uint8_t hlength;
355	uint8_t dlength[3];
356	uint8_t lun[8];
357	itt_t	 itt;
358	__be32	ttt;
359	__be32	statsn;
360	__be32	exp_cmdsn;
361	__be32	max_cmdsn;
362	__be32	datasn;
363	__be32	offset;
364	__be32	residual_count;
365};
366
367/* Data Response PDU flags */
368#define ISCSI_FLAG_DATA_ACK		0x40
369#define ISCSI_FLAG_DATA_OVERFLOW	0x04
370#define ISCSI_FLAG_DATA_UNDERFLOW	0x02
371#define ISCSI_FLAG_DATA_STATUS		0x01
372
373/* Text Header */
374struct iscsi_text {
375	uint8_t opcode;
376	uint8_t flags;
377	uint8_t rsvd2[2];
378	uint8_t hlength;
379	uint8_t dlength[3];
380	uint8_t rsvd4[8];
381	itt_t	 itt;
382	__be32	ttt;
383	__be32	cmdsn;
384	__be32	exp_statsn;
385	uint8_t rsvd5[16];
386	/* Text - key=value pairs */
387};
388
389#define ISCSI_FLAG_TEXT_CONTINUE	0x40
390
391/* Text Response Header */
392struct iscsi_text_rsp {
393	uint8_t opcode;
394	uint8_t flags;
395	uint8_t rsvd2[2];
396	uint8_t hlength;
397	uint8_t dlength[3];
398	uint8_t rsvd4[8];
399	itt_t	 itt;
400	__be32	ttt;
401	__be32	statsn;
402	__be32	exp_cmdsn;
403	__be32	max_cmdsn;
404	uint8_t rsvd5[12];
405	/* Text Response - key:value pairs */
406};
407
408/* Login Header */
409struct iscsi_login {
410	uint8_t opcode;
411	uint8_t flags;
412	uint8_t max_version;	/* Max. version supported */
413	uint8_t min_version;	/* Min. version supported */
414	uint8_t hlength;
415	uint8_t dlength[3];
416	uint8_t isid[6];	/* Initiator Session ID */
417	__be16	tsih;	/* Target Session Handle */
418	itt_t	 itt;	/* Initiator Task Tag */
419	__be16	cid;
420	__be16	rsvd3;
421	__be32	cmdsn;
422	__be32	exp_statsn;
423	uint8_t rsvd5[16];
424};
425
426/* Login PDU flags */
427#define ISCSI_FLAG_LOGIN_TRANSIT		0x80
428#define ISCSI_FLAG_LOGIN_CONTINUE		0x40
429#define ISCSI_FLAG_LOGIN_CURRENT_STAGE_MASK	0x0C	/* 2 bits */
430#define ISCSI_FLAG_LOGIN_NEXT_STAGE_MASK	0x03	/* 2 bits */
431
432#define ISCSI_LOGIN_CURRENT_STAGE(flags) \
433	((flags & ISCSI_FLAG_LOGIN_CURRENT_STAGE_MASK) >> 2)
434#define ISCSI_LOGIN_NEXT_STAGE(flags) \
435	(flags & ISCSI_FLAG_LOGIN_NEXT_STAGE_MASK)
436
437/* Login Response Header */
438struct iscsi_login_rsp {
439	uint8_t opcode;
440	uint8_t flags;
441	uint8_t max_version;	/* Max. version supported */
442	uint8_t active_version;	/* Active version */
443	uint8_t hlength;
444	uint8_t dlength[3];
445	uint8_t isid[6];	/* Initiator Session ID */
446	__be16	tsih;	/* Target Session Handle */
447	itt_t	 itt;	/* Initiator Task Tag */
448	__be32	rsvd3;
449	__be32	statsn;
450	__be32	exp_cmdsn;
451	__be32	max_cmdsn;
452	uint8_t status_class;	/* see Login RSP ststus classes below */
453	uint8_t status_detail;	/* see Login RSP Status details below */
454	uint8_t rsvd4[10];
455};
456
457/* Login stage (phase) codes for CSG, NSG */
458#define ISCSI_INITIAL_LOGIN_STAGE		-1
459#define ISCSI_SECURITY_NEGOTIATION_STAGE	0
460#define ISCSI_OP_PARMS_NEGOTIATION_STAGE	1
461#define ISCSI_FULL_FEATURE_PHASE		3
462
463/* Login Status response classes */
464#define ISCSI_STATUS_CLS_SUCCESS		0x00
465#define ISCSI_STATUS_CLS_REDIRECT		0x01
466#define ISCSI_STATUS_CLS_INITIATOR_ERR		0x02
467#define ISCSI_STATUS_CLS_TARGET_ERR		0x03
468
469/* Login Status response detail codes */
470/* Class-0 (Success) */
471#define ISCSI_LOGIN_STATUS_ACCEPT		0x00
472
473/* Class-1 (Redirection) */
474#define ISCSI_LOGIN_STATUS_TGT_MOVED_TEMP	0x01
475#define ISCSI_LOGIN_STATUS_TGT_MOVED_PERM	0x02
476
477/* Class-2 (Initiator Error) */
478#define ISCSI_LOGIN_STATUS_INIT_ERR		0x00
479#define ISCSI_LOGIN_STATUS_AUTH_FAILED		0x01
480#define ISCSI_LOGIN_STATUS_TGT_FORBIDDEN	0x02
481#define ISCSI_LOGIN_STATUS_TGT_NOT_FOUND	0x03
482#define ISCSI_LOGIN_STATUS_TGT_REMOVED		0x04
483#define ISCSI_LOGIN_STATUS_NO_VERSION		0x05
484#define ISCSI_LOGIN_STATUS_ISID_ERROR		0x06
485#define ISCSI_LOGIN_STATUS_MISSING_FIELDS	0x07
486#define ISCSI_LOGIN_STATUS_CONN_ADD_FAILED	0x08
487#define ISCSI_LOGIN_STATUS_NO_SESSION_TYPE	0x09
488#define ISCSI_LOGIN_STATUS_NO_SESSION		0x0a
489#define ISCSI_LOGIN_STATUS_INVALID_REQUEST	0x0b
490
491/* Class-3 (Target Error) */
492#define ISCSI_LOGIN_STATUS_TARGET_ERROR		0x00
493#define ISCSI_LOGIN_STATUS_SVC_UNAVAILABLE	0x01
494#define ISCSI_LOGIN_STATUS_NO_RESOURCES		0x02
495
496/* Logout Header */
497struct iscsi_logout {
498	uint8_t opcode;
499	uint8_t flags;
500	uint8_t rsvd1[2];
501	uint8_t hlength;
502	uint8_t dlength[3];
503	uint8_t rsvd2[8];
504	itt_t	 itt;	/* Initiator Task Tag */
505	__be16	cid;
506	uint8_t rsvd3[2];
507	__be32	cmdsn;
508	__be32	exp_statsn;
509	uint8_t rsvd4[16];
510};
511
512/* Logout PDU flags */
513#define ISCSI_FLAG_LOGOUT_REASON_MASK	0x7F
514
515/* logout reason_code values */
516
517#define ISCSI_LOGOUT_REASON_CLOSE_SESSION	0
518#define ISCSI_LOGOUT_REASON_CLOSE_CONNECTION	1
519#define ISCSI_LOGOUT_REASON_RECOVERY		2
520#define ISCSI_LOGOUT_REASON_AEN_REQUEST		3
521
522/* Logout Response Header */
523struct iscsi_logout_rsp {
524	uint8_t opcode;
525	uint8_t flags;
526	uint8_t response;	/* see Logout response values below */
527	uint8_t rsvd2;
528	uint8_t hlength;
529	uint8_t dlength[3];
530	uint8_t rsvd3[8];
531	itt_t	 itt;	/* Initiator Task Tag */
532	__be32	rsvd4;
533	__be32	statsn;
534	__be32	exp_cmdsn;
535	__be32	max_cmdsn;
536	__be32	rsvd5;
537	__be16	t2wait;
538	__be16	t2retain;
539	__be32	rsvd6;
540};
541
542/* logout response status values */
543
544#define ISCSI_LOGOUT_SUCCESS			0
545#define ISCSI_LOGOUT_CID_NOT_FOUND		1
546#define ISCSI_LOGOUT_RECOVERY_UNSUPPORTED	2
547#define ISCSI_LOGOUT_CLEANUP_FAILED		3
548
549/* SNACK Header */
550struct iscsi_snack {
551	uint8_t opcode;
552	uint8_t flags;
553	uint8_t rsvd2[14];
554	itt_t	 itt;
555	__be32	begrun;
556	__be32	runlength;
557	__be32	exp_statsn;
558	__be32	rsvd3;
559	__be32	exp_datasn;
560	uint8_t rsvd6[8];
561};
562
563/* SNACK PDU flags */
564#define ISCSI_FLAG_SNACK_TYPE_MASK	0x0F	/* 4 bits */
565
566/* Reject Message Header */
567struct iscsi_reject {
568	uint8_t opcode;
569	uint8_t flags;
570	uint8_t reason;
571	uint8_t rsvd2;
572	uint8_t hlength;
573	uint8_t dlength[3];
574	uint8_t rsvd3[8];
575	__be32  ffffffff;
576	uint8_t rsvd4[4];
577	__be32	statsn;
578	__be32	exp_cmdsn;
579	__be32	max_cmdsn;
580	__be32	datasn;
581	uint8_t rsvd5[8];
582	/* Text - Rejected hdr */
583};
584
585/* Reason for Reject */
586#define ISCSI_REASON_CMD_BEFORE_LOGIN	1
587#define ISCSI_REASON_DATA_DIGEST_ERROR	2
588#define ISCSI_REASON_DATA_SNACK_REJECT	3
589#define ISCSI_REASON_PROTOCOL_ERROR	4
590#define ISCSI_REASON_CMD_NOT_SUPPORTED	5
591#define ISCSI_REASON_IMM_CMD_REJECT		6
592#define ISCSI_REASON_TASK_IN_PROGRESS	7
593#define ISCSI_REASON_INVALID_SNACK		8
594#define ISCSI_REASON_BOOKMARK_INVALID	9
595#define ISCSI_REASON_BOOKMARK_NO_RESOURCES	10
596#define ISCSI_REASON_NEGOTIATION_RESET	11
597
598/* Max. number of Key=Value pairs in a text message */
599#define MAX_KEY_VALUE_PAIRS	8192
600
601/* maximum length for text keys/values */
602#define KEY_MAXLEN		64
603#define VALUE_MAXLEN		255
604#define TARGET_NAME_MAXLEN	VALUE_MAXLEN
605
606#define ISCSI_DEF_MAX_RECV_SEG_LEN		8192
607#define ISCSI_MIN_MAX_RECV_SEG_LEN		512
608#define ISCSI_MAX_MAX_RECV_SEG_LEN		16777215
609
610#define ISCSI_DEF_FIRST_BURST_LEN		65536
611#define ISCSI_MIN_FIRST_BURST_LEN		512
612#define ISCSI_MAX_FIRST_BURST_LEN		16777215
613
614#define ISCSI_DEF_MAX_BURST_LEN			262144
615#define ISCSI_MIN_MAX_BURST_LEN			512
616#define ISCSI_MAX_MAX_BURST_LEN			16777215
617
618#define ISCSI_DEF_TIME2WAIT			2
619
620/************************* RFC 3720 End *****************************/
621
622#endif /* ISCSI_PROTO_H */