summaryrefslogtreecommitdiff
path: root/include/scsi/iscsi_if.h
blob: f1b01839490c556da5394f4dc17a80f692165e22 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
/*
 * iSCSI User/Kernel Shares (Defines, Constants, Protocol definitions, etc)
 *
 * Copyright (C) 2005 Dmitry Yusupov
 * Copyright (C) 2005 Alex Aizman
 * maintained by open-iscsi@googlegroups.com
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published
 * by the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 *
 * See the file COPYING included with this distribution for more details.
 */

#ifndef ISCSI_IF_H
#define ISCSI_IF_H

#include <scsi/iscsi_proto.h>
#include <linux/in.h>
#include <linux/in6.h>

#define ISCSI_NL_GRP_ISCSID	1
#define ISCSI_NL_GRP_UIP	2

#define UEVENT_BASE			10
#define KEVENT_BASE			100
#define ISCSI_ERR_BASE			1000

enum iscsi_uevent_e {
	ISCSI_UEVENT_UNKNOWN		= 0,

	/* down events */
	ISCSI_UEVENT_CREATE_SESSION	= UEVENT_BASE + 1,
	ISCSI_UEVENT_DESTROY_SESSION	= UEVENT_BASE + 2,
	ISCSI_UEVENT_CREATE_CONN	= UEVENT_BASE + 3,
	ISCSI_UEVENT_DESTROY_CONN	= UEVENT_BASE + 4,
	ISCSI_UEVENT_BIND_CONN		= UEVENT_BASE + 5,
	ISCSI_UEVENT_SET_PARAM		= UEVENT_BASE + 6,
	ISCSI_UEVENT_START_CONN		= UEVENT_BASE + 7,
	ISCSI_UEVENT_STOP_CONN		= UEVENT_BASE + 8,
	ISCSI_UEVENT_SEND_PDU		= UEVENT_BASE + 9,
	ISCSI_UEVENT_GET_STATS		= UEVENT_BASE + 10,
	ISCSI_UEVENT_GET_PARAM		= UEVENT_BASE + 11,

	ISCSI_UEVENT_TRANSPORT_EP_CONNECT	= UEVENT_BASE + 12,
	ISCSI_UEVENT_TRANSPORT_EP_POLL		= UEVENT_BASE + 13,
	ISCSI_UEVENT_TRANSPORT_EP_DISCONNECT	= UEVENT_BASE + 14,

	ISCSI_UEVENT_TGT_DSCVR		= UEVENT_BASE + 15,
	ISCSI_UEVENT_SET_HOST_PARAM	= UEVENT_BASE + 16,
	ISCSI_UEVENT_UNBIND_SESSION	= UEVENT_BASE + 17,
	ISCSI_UEVENT_CREATE_BOUND_SESSION		= UEVENT_BASE + 18,
	ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST	= UEVENT_BASE + 19,

	ISCSI_UEVENT_PATH_UPDATE	= UEVENT_BASE + 20,
	ISCSI_UEVENT_SET_IFACE_PARAMS	= UEVENT_BASE + 21,
	ISCSI_UEVENT_PING		= UEVENT_BASE + 22,
	ISCSI_UEVENT_GET_CHAP		= UEVENT_BASE + 23,
	ISCSI_UEVENT_DELETE_CHAP	= UEVENT_BASE + 24,
	ISCSI_UEVENT_SET_FLASHNODE_PARAMS	= UEVENT_BASE + 25,
	ISCSI_UEVENT_NEW_FLASHNODE	= UEVENT_BASE + 26,
	ISCSI_UEVENT_DEL_FLASHNODE	= UEVENT_BASE + 27,
	ISCSI_UEVENT_LOGIN_FLASHNODE	= UEVENT_BASE + 28,
	ISCSI_UEVENT_LOGOUT_FLASHNODE	= UEVENT_BASE + 29,
	ISCSI_UEVENT_LOGOUT_FLASHNODE_SID	= UEVENT_BASE + 30,

	/* up events */
	ISCSI_KEVENT_RECV_PDU		= KEVENT_BASE + 1,
	ISCSI_KEVENT_CONN_ERROR		= KEVENT_BASE + 2,
	ISCSI_KEVENT_IF_ERROR		= KEVENT_BASE + 3,
	ISCSI_KEVENT_DESTROY_SESSION	= KEVENT_BASE + 4,
	ISCSI_KEVENT_UNBIND_SESSION	= KEVENT_BASE + 5,
	ISCSI_KEVENT_CREATE_SESSION	= KEVENT_BASE + 6,

	ISCSI_KEVENT_PATH_REQ		= KEVENT_BASE + 7,
	ISCSI_KEVENT_IF_DOWN		= KEVENT_BASE + 8,
	ISCSI_KEVENT_CONN_LOGIN_STATE   = KEVENT_BASE + 9,
	ISCSI_KEVENT_HOST_EVENT		= KEVENT_BASE + 10,
	ISCSI_KEVENT_PING_COMP		= KEVENT_BASE + 11,
};

enum iscsi_tgt_dscvr {
	ISCSI_TGT_DSCVR_SEND_TARGETS	= 1,
	ISCSI_TGT_DSCVR_ISNS		= 2,
	ISCSI_TGT_DSCVR_SLP		= 3,
};

enum iscsi_host_event_code {
	ISCSI_EVENT_LINKUP		= 1,
	ISCSI_EVENT_LINKDOWN,
	/* must always be last */
	ISCSI_EVENT_MAX,
};

struct iscsi_uevent {
	uint32_t type; /* k/u events type */
	uint32_t iferror; /* carries interface or resource errors */
	uint64_t transport_handle;

	union {
		/* messages u -> k */
		struct msg_create_session {
			uint32_t	initial_cmdsn;
			uint16_t	cmds_max;
			uint16_t	queue_depth;
		} c_session;
		struct msg_create_bound_session {
			uint64_t	ep_handle;
			uint32_t	initial_cmdsn;
			uint16_t	cmds_max;
			uint16_t	queue_depth;
		} c_bound_session;
		struct msg_destroy_session {
			uint32_t	sid;
		} d_session;
		struct msg_create_conn {
			uint32_t	sid;
			uint32_t	cid;
		} c_conn;
		struct msg_bind_conn {
			uint32_t	sid;
			uint32_t	cid;
			uint64_t	transport_eph;
			uint32_t	is_leading;
		} b_conn;
		struct msg_destroy_conn {
			uint32_t	sid;
			uint32_t	cid;
		} d_conn;
		struct msg_send_pdu {
			uint32_t	sid;
			uint32_t	cid;
			uint32_t	hdr_size;
			uint32_t	data_size;
		} send_pdu;
		struct msg_set_param {
			uint32_t	sid;
			uint32_t	cid;
			uint32_t	param; /* enum iscsi_param */
			uint32_t	len;
		} set_param;
		struct msg_start_conn {
			uint32_t	sid;
			uint32_t	cid;
		} start_conn;
		struct msg_stop_conn {
			uint32_t	sid;
			uint32_t	cid;
			uint64_t	conn_handle;
			uint32_t	flag;
		} stop_conn;
		struct msg_get_stats {
			uint32_t	sid;
			uint32_t	cid;
		} get_stats;
		struct msg_transport_connect {
			uint32_t	non_blocking;
		} ep_connect;
		struct msg_transport_connect_through_host {
			uint32_t	host_no;
			uint32_t	non_blocking;
		} ep_connect_through_host;
		struct msg_transport_poll {
			uint64_t	ep_handle;
			uint32_t	timeout_ms;
		} ep_poll;
		struct msg_transport_disconnect {
			uint64_t	ep_handle;
		} ep_disconnect;
		struct msg_tgt_dscvr {
			enum iscsi_tgt_dscvr	type;
			uint32_t	host_no;
			/*
 			 * enable = 1 to establish a new connection
			 * with the server. enable = 0 to disconnect
			 * from the server. Used primarily to switch
			 * from one iSNS server to another.
			 */
			uint32_t	enable;
		} tgt_dscvr;
		struct msg_set_host_param {
			uint32_t	host_no;
			uint32_t	param; /* enum iscsi_host_param */
			uint32_t	len;
		} set_host_param;
		struct msg_set_path {
			uint32_t	host_no;
		} set_path;
		struct msg_set_iface_params {
			uint32_t	host_no;
			uint32_t	count;
		} set_iface_params;
		struct msg_iscsi_ping {
			uint32_t        host_no;
			uint32_t        iface_num;
			uint32_t        iface_type;
			uint32_t        payload_size;
			uint32_t	pid;	/* unique ping id associated
						   with each ping request */
		} iscsi_ping;
		struct msg_get_chap {
			uint32_t	host_no;
			uint32_t	num_entries; /* number of CHAP entries
						      * on request, number of
						      * valid CHAP entries on
						      * response */
			uint16_t	chap_tbl_idx;
		} get_chap;
		struct msg_delete_chap {
		       uint32_t        host_no;
		       uint16_t        chap_tbl_idx;
		} delete_chap;
		struct msg_set_flashnode_param {
			uint32_t	host_no;
			uint32_t	flashnode_idx;
			uint32_t	count;
		} set_flashnode;
		struct msg_new_flashnode {
			uint32_t	host_no;
			uint32_t	len;
		} new_flashnode;
		struct msg_del_flashnode {
			uint32_t	host_no;
			uint32_t	flashnode_idx;
		} del_flashnode;
		struct msg_login_flashnode {
			uint32_t	host_no;
			uint32_t	flashnode_idx;
		} login_flashnode;
		struct msg_logout_flashnode {
			uint32_t	host_no;
			uint32_t	flashnode_idx;
		} logout_flashnode;
		struct msg_logout_flashnode_sid {
			uint32_t	host_no;
			uint32_t	sid;
		} logout_flashnode_sid;
	} u;
	union {
		/* messages k -> u */
		int			retcode;
		struct msg_create_session_ret {
			uint32_t	sid;
			uint32_t	host_no;
		} c_session_ret;
		struct msg_create_conn_ret {
			uint32_t	sid;
			uint32_t	cid;
		} c_conn_ret;
		struct msg_unbind_session {
			uint32_t	sid;
			uint32_t	host_no;
		} unbind_session;
		struct msg_recv_req {
			uint32_t	sid;
			uint32_t	cid;
			uint64_t	recv_handle;
		} recv_req;
		struct msg_conn_login {
			uint32_t        sid;
			uint32_t        cid;
			uint32_t        state; /* enum iscsi_conn_state */
		} conn_login;
		struct msg_conn_error {
			uint32_t	sid;
			uint32_t	cid;
			uint32_t	error; /* enum iscsi_err */
		} connerror;
		struct msg_session_destroyed {
			uint32_t	host_no;
			uint32_t	sid;
		} d_session;
		struct msg_transport_connect_ret {
			uint64_t	handle;
		} ep_connect_ret;
		struct msg_req_path {
			uint32_t	host_no;
		} req_path;
		struct msg_notify_if_down {
			uint32_t	host_no;
		} notify_if_down;
		struct msg_host_event {
			uint32_t	host_no;
			uint32_t	data_size;
			enum iscsi_host_event_code code;
		} host_event;
		struct msg_ping_comp {
			uint32_t        host_no;
			uint32_t        status; /* enum
						 * iscsi_ping_status_code */
			uint32_t	pid;	/* unique ping id associated
						   with each ping request */
			uint32_t        data_size;
		} ping_comp;
		struct msg_new_flashnode_ret {
			uint32_t	flashnode_idx;
		} new_flashnode_ret;
	} r;
} __attribute__ ((aligned (sizeof(uint64_t))));

enum iscsi_param_type {
	ISCSI_PARAM,		/* iscsi_param (session, conn, target, LU) */
	ISCSI_HOST_PARAM,	/* iscsi_host_param */
	ISCSI_NET_PARAM,	/* iscsi_net_param */
	ISCSI_FLASHNODE_PARAM,	/* iscsi_flashnode_param */
};

struct iscsi_iface_param_info {
	uint32_t iface_num;	/* iface number, 0 - n */
	uint32_t len;		/* Actual length of the param */
	uint16_t param;		/* iscsi param value */
	uint8_t iface_type;	/* IPv4 or IPv6 */
	uint8_t param_type;	/* iscsi_param_type */
	uint8_t value[0];	/* length sized value follows */
} __packed;

/*
 * To keep the struct iscsi_uevent size the same for userspace code
 * compatibility, the main structure for ISCSI_UEVENT_PATH_UPDATE and
 * ISCSI_KEVENT_PATH_REQ is defined separately and comes after the
 * struct iscsi_uevent in the NETLINK_ISCSI message.
 */
struct iscsi_path {
	uint64_t	handle;
	uint8_t		mac_addr[6];
	uint8_t		mac_addr_old[6];
	uint32_t	ip_addr_len;	/* 4 or 16 */
	union {
		struct in_addr	v4_addr;
		struct in6_addr	v6_addr;
	} src;
	union {
		struct in_addr	v4_addr;
		struct in6_addr	v6_addr;
	} dst;
	uint16_t	vlan_id;
	uint16_t	pmtu;
} __attribute__ ((aligned (sizeof(uint64_t))));

/* iscsi iface enabled/disabled setting */
#define ISCSI_IFACE_DISABLE	0x01
#define ISCSI_IFACE_ENABLE	0x02

/* ipv4 bootproto */
#define ISCSI_BOOTPROTO_STATIC		0x01
#define ISCSI_BOOTPROTO_DHCP		0x02

/* ipv6 addr autoconfig type */
#define ISCSI_IPV6_AUTOCFG_DISABLE		0x01
#define ISCSI_IPV6_AUTOCFG_ND_ENABLE		0x02
#define ISCSI_IPV6_AUTOCFG_DHCPV6_ENABLE	0x03

/* ipv6 link local addr type */
#define ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE	0x01
#define ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE	0x02

/* ipv6 router addr type */
#define ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE	0x01
#define ISCSI_IPV6_ROUTER_AUTOCFG_DISABLE	0x02

#define ISCSI_IFACE_TYPE_IPV4		0x01
#define ISCSI_IFACE_TYPE_IPV6		0x02

#define ISCSI_MAX_VLAN_ID		4095
#define ISCSI_MAX_VLAN_PRIORITY		7

/* iscsi vlan enable/disabled setting */
#define ISCSI_VLAN_DISABLE	0x01
#define ISCSI_VLAN_ENABLE	0x02

/* iSCSI network params */
enum iscsi_net_param {
	ISCSI_NET_PARAM_IPV4_ADDR		= 1,
	ISCSI_NET_PARAM_IPV4_SUBNET		= 2,
	ISCSI_NET_PARAM_IPV4_GW			= 3,
	ISCSI_NET_PARAM_IPV4_BOOTPROTO		= 4,
	ISCSI_NET_PARAM_MAC			= 5,
	ISCSI_NET_PARAM_IPV6_LINKLOCAL		= 6,
	ISCSI_NET_PARAM_IPV6_ADDR		= 7,
	ISCSI_NET_PARAM_IPV6_ROUTER		= 8,
	ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG	= 9,
	ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG	= 10,
	ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG	= 11,
	ISCSI_NET_PARAM_IFACE_ENABLE		= 12,
	ISCSI_NET_PARAM_VLAN_ID			= 13,
	ISCSI_NET_PARAM_VLAN_PRIORITY		= 14,
	ISCSI_NET_PARAM_VLAN_ENABLED		= 15,
	ISCSI_NET_PARAM_VLAN_TAG		= 16,
	ISCSI_NET_PARAM_IFACE_TYPE		= 17,
	ISCSI_NET_PARAM_IFACE_NAME		= 18,
	ISCSI_NET_PARAM_MTU			= 19,
	ISCSI_NET_PARAM_PORT			= 20,
};

enum iscsi_conn_state {
	ISCSI_CONN_STATE_FREE,
	ISCSI_CONN_STATE_XPT_WAIT,
	ISCSI_CONN_STATE_IN_LOGIN,
	ISCSI_CONN_STATE_LOGGED_IN,
	ISCSI_CONN_STATE_IN_LOGOUT,
	ISCSI_CONN_STATE_LOGOUT_REQUESTED,
	ISCSI_CONN_STATE_CLEANUP_WAIT,
};

/*
 * Common error codes
 */
enum iscsi_err {
	ISCSI_OK			= 0,

	ISCSI_ERR_DATASN		= ISCSI_ERR_BASE + 1,
	ISCSI_ERR_DATA_OFFSET		= ISCSI_ERR_BASE + 2,
	ISCSI_ERR_MAX_CMDSN		= ISCSI_ERR_BASE + 3,
	ISCSI_ERR_EXP_CMDSN		= ISCSI_ERR_BASE + 4,
	ISCSI_ERR_BAD_OPCODE		= ISCSI_ERR_BASE + 5,
	ISCSI_ERR_DATALEN		= ISCSI_ERR_BASE + 6,
	ISCSI_ERR_AHSLEN		= ISCSI_ERR_BASE + 7,
	ISCSI_ERR_PROTO			= ISCSI_ERR_BASE + 8,
	ISCSI_ERR_LUN			= ISCSI_ERR_BASE + 9,
	ISCSI_ERR_BAD_ITT		= ISCSI_ERR_BASE + 10,
	ISCSI_ERR_CONN_FAILED		= ISCSI_ERR_BASE + 11,
	ISCSI_ERR_R2TSN			= ISCSI_ERR_BASE + 12,
	ISCSI_ERR_SESSION_FAILED	= ISCSI_ERR_BASE + 13,
	ISCSI_ERR_HDR_DGST		= ISCSI_ERR_BASE + 14,
	ISCSI_ERR_DATA_DGST		= ISCSI_ERR_BASE + 15,
	ISCSI_ERR_PARAM_NOT_FOUND	= ISCSI_ERR_BASE + 16,
	ISCSI_ERR_NO_SCSI_CMD		= ISCSI_ERR_BASE + 17,
	ISCSI_ERR_INVALID_HOST		= ISCSI_ERR_BASE + 18,
	ISCSI_ERR_XMIT_FAILED		= ISCSI_ERR_BASE + 19,
	ISCSI_ERR_TCP_CONN_CLOSE	= ISCSI_ERR_BASE + 20,
	ISCSI_ERR_SCSI_EH_SESSION_RST	= ISCSI_ERR_BASE + 21,
};

/*
 * iSCSI Parameters (RFC3720)
 */
enum iscsi_param {
	/* passed in using netlink set param */
	ISCSI_PARAM_MAX_RECV_DLENGTH,
	ISCSI_PARAM_MAX_XMIT_DLENGTH,
	ISCSI_PARAM_HDRDGST_EN,
	ISCSI_PARAM_DATADGST_EN,
	ISCSI_PARAM_INITIAL_R2T_EN,
	ISCSI_PARAM_MAX_R2T,
	ISCSI_PARAM_IMM_DATA_EN,
	ISCSI_PARAM_FIRST_BURST,
	ISCSI_PARAM_MAX_BURST,
	ISCSI_PARAM_PDU_INORDER_EN,
	ISCSI_PARAM_DATASEQ_INORDER_EN,
	ISCSI_PARAM_ERL,
	ISCSI_PARAM_IFMARKER_EN,
	ISCSI_PARAM_OFMARKER_EN,
	ISCSI_PARAM_EXP_STATSN,
	ISCSI_PARAM_TARGET_NAME,
	ISCSI_PARAM_TPGT,
	ISCSI_PARAM_PERSISTENT_ADDRESS,
	ISCSI_PARAM_PERSISTENT_PORT,
	ISCSI_PARAM_SESS_RECOVERY_TMO,

	/* passed in through bind conn using transport_fd */
	ISCSI_PARAM_CONN_PORT,
	ISCSI_PARAM_CONN_ADDRESS,

	ISCSI_PARAM_USERNAME,
	ISCSI_PARAM_USERNAME_IN,
	ISCSI_PARAM_PASSWORD,
	ISCSI_PARAM_PASSWORD_IN,

	ISCSI_PARAM_FAST_ABORT,
	ISCSI_PARAM_ABORT_TMO,
	ISCSI_PARAM_LU_RESET_TMO,
	ISCSI_PARAM_HOST_RESET_TMO,

	ISCSI_PARAM_PING_TMO,
	ISCSI_PARAM_RECV_TMO,

	ISCSI_PARAM_IFACE_NAME,
	ISCSI_PARAM_ISID,
	ISCSI_PARAM_INITIATOR_NAME,

	ISCSI_PARAM_TGT_RESET_TMO,
	ISCSI_PARAM_TARGET_ALIAS,

	ISCSI_PARAM_CHAP_IN_IDX,
	ISCSI_PARAM_CHAP_OUT_IDX,
	/* must always be last */
	ISCSI_PARAM_MAX,
};

/* iSCSI HBA params */
enum iscsi_host_param {
	ISCSI_HOST_PARAM_HWADDRESS,
	ISCSI_HOST_PARAM_INITIATOR_NAME,
	ISCSI_HOST_PARAM_NETDEV_NAME,
	ISCSI_HOST_PARAM_IPADDRESS,
	ISCSI_HOST_PARAM_PORT_STATE,
	ISCSI_HOST_PARAM_PORT_SPEED,
	ISCSI_HOST_PARAM_MAX,
};

/* iSCSI Flash Target params */
enum iscsi_flashnode_param {
	ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6,
	ISCSI_FLASHNODE_PORTAL_TYPE,
	ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE,
	ISCSI_FLASHNODE_DISCOVERY_SESS,
	ISCSI_FLASHNODE_ENTRY_EN,
	ISCSI_FLASHNODE_HDR_DGST_EN,
	ISCSI_FLASHNODE_DATA_DGST_EN,
	ISCSI_FLASHNODE_IMM_DATA_EN,
	ISCSI_FLASHNODE_INITIAL_R2T_EN,
	ISCSI_FLASHNODE_DATASEQ_INORDER,
	ISCSI_FLASHNODE_PDU_INORDER,
	ISCSI_FLASHNODE_CHAP_AUTH_EN,
	ISCSI_FLASHNODE_SNACK_REQ_EN,
	ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN,
	ISCSI_FLASHNODE_BIDI_CHAP_EN,
	/* make authentication for discovery sessions optional */
	ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL,
	ISCSI_FLASHNODE_ERL,
	ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT,
	ISCSI_FLASHNODE_TCP_NAGLE_DISABLE,
	ISCSI_FLASHNODE_TCP_WSF_DISABLE,
	ISCSI_FLASHNODE_TCP_TIMER_SCALE,
	ISCSI_FLASHNODE_TCP_TIMESTAMP_EN,
	ISCSI_FLASHNODE_IP_FRAG_DISABLE,
	ISCSI_FLASHNODE_MAX_RECV_DLENGTH,
	ISCSI_FLASHNODE_MAX_XMIT_DLENGTH,
	ISCSI_FLASHNODE_FIRST_BURST,
	ISCSI_FLASHNODE_DEF_TIME2WAIT,
	ISCSI_FLASHNODE_DEF_TIME2RETAIN,
	ISCSI_FLASHNODE_MAX_R2T,
	ISCSI_FLASHNODE_KEEPALIVE_TMO,
	ISCSI_FLASHNODE_ISID,
	ISCSI_FLASHNODE_TSID,
	ISCSI_FLASHNODE_PORT,
	ISCSI_FLASHNODE_MAX_BURST,
	ISCSI_FLASHNODE_DEF_TASKMGMT_TMO,
	ISCSI_FLASHNODE_IPADDR,
	ISCSI_FLASHNODE_ALIAS,
	ISCSI_FLASHNODE_REDIRECT_IPADDR,
	ISCSI_FLASHNODE_MAX_SEGMENT_SIZE,
	ISCSI_FLASHNODE_LOCAL_PORT,
	ISCSI_FLASHNODE_IPV4_TOS,
	ISCSI_FLASHNODE_IPV6_TC,
	ISCSI_FLASHNODE_IPV6_FLOW_LABEL,
	ISCSI_FLASHNODE_NAME,
	ISCSI_FLASHNODE_TPGT,
	ISCSI_FLASHNODE_LINK_LOCAL_IPV6,
	ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX,
	ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE,
	ISCSI_FLASHNODE_TCP_XMIT_WSF,
	ISCSI_FLASHNODE_TCP_RECV_WSF,
	ISCSI_FLASHNODE_CHAP_IN_IDX,
	ISCSI_FLASHNODE_CHAP_OUT_IDX,
	ISCSI_FLASHNODE_USERNAME,
	ISCSI_FLASHNODE_USERNAME_IN,
	ISCSI_FLASHNODE_PASSWORD,
	ISCSI_FLASHNODE_PASSWORD_IN,
	ISCSI_FLASHNODE_STATSN,
	ISCSI_FLASHNODE_EXP_STATSN,
	ISCSI_FLASHNODE_IS_BOOT_TGT,

	ISCSI_FLASHNODE_MAX,
};

struct iscsi_flashnode_param_info {
	uint32_t len;		/* Actual length of the param */
	uint16_t param;		/* iscsi param value */
	uint8_t value[0];	/* length sized value follows */
} __packed;

enum iscsi_discovery_parent_type {
	ISCSI_DISC_PARENT_UNKNOWN	= 0x1,
	ISCSI_DISC_PARENT_SENDTGT	= 0x2,
	ISCSI_DISC_PARENT_ISNS		= 0x3,
};

/* iSCSI port Speed */
enum iscsi_port_speed {
	ISCSI_PORT_SPEED_UNKNOWN	= 0x1,
	ISCSI_PORT_SPEED_10MBPS		= 0x2,
	ISCSI_PORT_SPEED_100MBPS	= 0x4,
	ISCSI_PORT_SPEED_1GBPS		= 0x8,
	ISCSI_PORT_SPEED_10GBPS		= 0x10,
};

/* iSCSI port state */
enum iscsi_port_state {
	ISCSI_PORT_STATE_DOWN		= 0x1,
	ISCSI_PORT_STATE_UP		= 0x2,
};

/* iSCSI PING status/error code */
enum iscsi_ping_status_code {
	ISCSI_PING_SUCCESS			= 0,
	ISCSI_PING_FW_DISABLED			= 0x1,
	ISCSI_PING_IPADDR_INVALID		= 0x2,
	ISCSI_PING_LINKLOCAL_IPV6_ADDR_INVALID	= 0x3,
	ISCSI_PING_TIMEOUT			= 0x4,
	ISCSI_PING_INVALID_DEST_ADDR		= 0x5,
	ISCSI_PING_OVERSIZE_PACKET		= 0x6,
	ISCSI_PING_ICMP_ERROR			= 0x7,
	ISCSI_PING_MAX_REQ_EXCEEDED		= 0x8,
	ISCSI_PING_NO_ARP_RECEIVED		= 0x9,
};

#define iscsi_ptr(_handle) ((void*)(unsigned long)_handle)
#define iscsi_handle(_ptr) ((uint64_t)(unsigned long)_ptr)

/*
 * These flags presents iSCSI Data-Path capabilities.
 */
#define CAP_RECOVERY_L0		0x1
#define CAP_RECOVERY_L1		0x2
#define CAP_RECOVERY_L2		0x4
#define CAP_MULTI_R2T		0x8
#define CAP_HDRDGST		0x10
#define CAP_DATADGST		0x20
#define CAP_MULTI_CONN		0x40
#define CAP_TEXT_NEGO		0x80
#define CAP_MARKERS		0x100
#define CAP_FW_DB		0x200
#define CAP_SENDTARGETS_OFFLOAD	0x400	/* offload discovery process */
#define CAP_DATA_PATH_OFFLOAD	0x800	/* offload entire IO path */
#define CAP_DIGEST_OFFLOAD	0x1000	/* offload hdr and data digests */
#define CAP_PADDING_OFFLOAD	0x2000	/* offload padding insertion, removal,
					 and verification */
#define CAP_LOGIN_OFFLOAD	0x4000  /* offload session login */

/*
 * These flags describes reason of stop_conn() call
 */
#define STOP_CONN_TERM		0x1
#define STOP_CONN_SUSPEND	0x2
#define STOP_CONN_RECOVER	0x3

#define ISCSI_STATS_CUSTOM_MAX		32
#define ISCSI_STATS_CUSTOM_DESC_MAX	64
struct iscsi_stats_custom {
	char desc[ISCSI_STATS_CUSTOM_DESC_MAX];
	uint64_t value;
};

/*
 * struct iscsi_stats - iSCSI Statistics (iSCSI MIB)
 *
 * Note: this structure contains counters collected on per-connection basis.
 */
struct iscsi_stats {
	/* octets */
	uint64_t txdata_octets;
	uint64_t rxdata_octets;

	/* xmit pdus */
	uint32_t noptx_pdus;
	uint32_t scsicmd_pdus;
	uint32_t tmfcmd_pdus;
	uint32_t login_pdus;
	uint32_t text_pdus;
	uint32_t dataout_pdus;
	uint32_t logout_pdus;
	uint32_t snack_pdus;

	/* recv pdus */
	uint32_t noprx_pdus;
	uint32_t scsirsp_pdus;
	uint32_t tmfrsp_pdus;
	uint32_t textrsp_pdus;
	uint32_t datain_pdus;
	uint32_t logoutrsp_pdus;
	uint32_t r2t_pdus;
	uint32_t async_pdus;
	uint32_t rjt_pdus;

	/* errors */
	uint32_t digest_err;
	uint32_t timeout_err;

	/*
	 * iSCSI Custom Statistics support, i.e. Transport could
	 * extend existing MIB statistics with its own specific statistics
	 * up to ISCSI_STATS_CUSTOM_MAX
	 */
	uint32_t custom_length;
	struct iscsi_stats_custom custom[0]
		__attribute__ ((aligned (sizeof(uint64_t))));
};

enum chap_type_e {
	CHAP_TYPE_OUT,
	CHAP_TYPE_IN,
};

#define ISCSI_CHAP_AUTH_NAME_MAX_LEN	256
#define ISCSI_CHAP_AUTH_SECRET_MAX_LEN	256
struct iscsi_chap_rec {
	uint16_t chap_tbl_idx;
	enum chap_type_e chap_type;
	char username[ISCSI_CHAP_AUTH_NAME_MAX_LEN];
	uint8_t password[ISCSI_CHAP_AUTH_SECRET_MAX_LEN];
	uint8_t password_length;
};

#endif