summaryrefslogtreecommitdiff
path: root/include/scsi/iscsi_if.h
blob: 5225a23f2d0e6ea9b931b444b5c0e6695ed24794 (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
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * 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
 */

#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,
	ISCSI_UEVENT_SET_CHAP		= UEVENT_BASE + 31,
	ISCSI_UEVENT_GET_HOST_STATS	= UEVENT_BASE + 32,
	ISCSI_UEVENT_DESTROY_SESSION_ASYNC	= UEVENT_BASE + 33,

	/* 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;
		struct msg_get_host_stats {
			uint32_t host_no;
		} get_host_stats;
	} 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 */
	ISCSI_CHAP_PARAM,	/* iscsi_chap_param */
	ISCSI_IFACE_PARAM,	/* iscsi_iface_param */
};

/* structure for minimalist usecase */
struct iscsi_param_info {
	uint32_t len;		/* Actual length of the param value */
	uint16_t param;		/* iscsi param */
	uint8_t value[];	/* length sized value follows */
} __packed;

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[];	/* 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 generic enable/disabled setting for various features */
#define ISCSI_NET_PARAM_DISABLE		0x01
#define ISCSI_NET_PARAM_ENABLE		0x02

/* iSCSI network params */
enum iscsi_net_param {
	ISCSI_NET_PARAM_IPV4_ADDR		= 1,
	ISCSI_NET_PARAM_IPV4_SUBNET,
	ISCSI_NET_PARAM_IPV4_GW,
	ISCSI_NET_PARAM_IPV4_BOOTPROTO,
	ISCSI_NET_PARAM_MAC,
	ISCSI_NET_PARAM_IPV6_LINKLOCAL,
	ISCSI_NET_PARAM_IPV6_ADDR,
	ISCSI_NET_PARAM_IPV6_ROUTER,
	ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG,
	ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG,
	ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG,
	ISCSI_NET_PARAM_IFACE_ENABLE,
	ISCSI_NET_PARAM_VLAN_ID,
	ISCSI_NET_PARAM_VLAN_PRIORITY,
	ISCSI_NET_PARAM_VLAN_ENABLED,
	ISCSI_NET_PARAM_VLAN_TAG,
	ISCSI_NET_PARAM_IFACE_TYPE,
	ISCSI_NET_PARAM_IFACE_NAME,
	ISCSI_NET_PARAM_MTU,
	ISCSI_NET_PARAM_PORT,
	ISCSI_NET_PARAM_IPADDR_STATE,
	ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE,
	ISCSI_NET_PARAM_IPV6_ROUTER_STATE,
	ISCSI_NET_PARAM_DELAYED_ACK_EN,
	ISCSI_NET_PARAM_TCP_NAGLE_DISABLE,
	ISCSI_NET_PARAM_TCP_WSF_DISABLE,
	ISCSI_NET_PARAM_TCP_WSF,
	ISCSI_NET_PARAM_TCP_TIMER_SCALE,
	ISCSI_NET_PARAM_TCP_TIMESTAMP_EN,
	ISCSI_NET_PARAM_CACHE_ID,
	ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN,
	ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN,
	ISCSI_NET_PARAM_IPV4_TOS_EN,
	ISCSI_NET_PARAM_IPV4_TOS,
	ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN,
	ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN,
	ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID,
	ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN,
	ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN,
	ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID,
	ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN,
	ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE,
	ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN,
	ISCSI_NET_PARAM_IPV4_TTL,
	ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN,
	ISCSI_NET_PARAM_IPV6_MLD_EN,
	ISCSI_NET_PARAM_IPV6_FLOW_LABEL,
	ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS,
	ISCSI_NET_PARAM_IPV6_HOP_LIMIT,
	ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO,
	ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME,
	ISCSI_NET_PARAM_IPV6_ND_STALE_TMO,
	ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT,
	ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU,
	ISCSI_NET_PARAM_REDIRECT_EN,
};

enum iscsi_ipaddress_state {
	ISCSI_IPDDRESS_STATE_UNCONFIGURED,
	ISCSI_IPDDRESS_STATE_ACQUIRING,
	ISCSI_IPDDRESS_STATE_TENTATIVE,
	ISCSI_IPDDRESS_STATE_VALID,
	ISCSI_IPDDRESS_STATE_DISABLING,
	ISCSI_IPDDRESS_STATE_INVALID,
	ISCSI_IPDDRESS_STATE_DEPRECATED,
};

enum iscsi_router_state {
	ISCSI_ROUTER_STATE_UNKNOWN,
	ISCSI_ROUTER_STATE_ADVERTISED,
	ISCSI_ROUTER_STATE_MANUAL,
	ISCSI_ROUTER_STATE_STALE,
};

/* iSCSI specific settings params for iface */
enum iscsi_iface_param {
	ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO,
	ISCSI_IFACE_PARAM_HDRDGST_EN,
	ISCSI_IFACE_PARAM_DATADGST_EN,
	ISCSI_IFACE_PARAM_IMM_DATA_EN,
	ISCSI_IFACE_PARAM_INITIAL_R2T_EN,
	ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN,
	ISCSI_IFACE_PARAM_PDU_INORDER_EN,
	ISCSI_IFACE_PARAM_ERL,
	ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH,
	ISCSI_IFACE_PARAM_FIRST_BURST,
	ISCSI_IFACE_PARAM_MAX_R2T,
	ISCSI_IFACE_PARAM_MAX_BURST,
	ISCSI_IFACE_PARAM_CHAP_AUTH_EN,
	ISCSI_IFACE_PARAM_BIDI_CHAP_EN,
	ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL,
	ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN,
	ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN,
	ISCSI_IFACE_PARAM_INITIATOR_NAME,
};

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_ERR_NOP_TIMEDOUT		= ISCSI_ERR_BASE + 22,
};

/*
 * 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,

	ISCSI_PARAM_BOOT_ROOT,
	ISCSI_PARAM_BOOT_NIC,
	ISCSI_PARAM_BOOT_TARGET,

	ISCSI_PARAM_AUTO_SND_TGT_DISABLE,
	ISCSI_PARAM_DISCOVERY_SESS,
	ISCSI_PARAM_PORTAL_TYPE,
	ISCSI_PARAM_CHAP_AUTH_EN,
	ISCSI_PARAM_DISCOVERY_LOGOUT_EN,
	ISCSI_PARAM_BIDI_CHAP_EN,
	ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL,

	ISCSI_PARAM_DEF_TIME2WAIT,
	ISCSI_PARAM_DEF_TIME2RETAIN,
	ISCSI_PARAM_MAX_SEGMENT_SIZE,
	ISCSI_PARAM_STATSN,
	ISCSI_PARAM_KEEPALIVE_TMO,
	ISCSI_PARAM_LOCAL_PORT,
	ISCSI_PARAM_TSID,
	ISCSI_PARAM_DEF_TASKMGMT_TMO,

	ISCSI_PARAM_TCP_TIMESTAMP_STAT,
	ISCSI_PARAM_TCP_WSF_DISABLE,
	ISCSI_PARAM_TCP_NAGLE_DISABLE,
	ISCSI_PARAM_TCP_TIMER_SCALE,
	ISCSI_PARAM_TCP_TIMESTAMP_EN,
	ISCSI_PARAM_TCP_XMIT_WSF,
	ISCSI_PARAM_TCP_RECV_WSF,
	ISCSI_PARAM_IP_FRAGMENT_DISABLE,
	ISCSI_PARAM_IPV4_TOS,
	ISCSI_PARAM_IPV6_TC,
	ISCSI_PARAM_IPV6_FLOW_LABEL,
	ISCSI_PARAM_IS_FW_ASSIGNED_IPV6,

	ISCSI_PARAM_DISCOVERY_PARENT_IDX,
	ISCSI_PARAM_DISCOVERY_PARENT_TYPE,
	ISCSI_PARAM_LOCAL_IPADDR,
	/* 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,
};

/* portal type */
#define PORTAL_TYPE_IPV4	"ipv4"
#define PORTAL_TYPE_IPV6	"ipv6"

/* 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[];	/* 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_SPEED_25GBPS         = 0x20,
	ISCSI_PORT_SPEED_40GBPS         = 0x40,
};

/* 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[]
		__attribute__ ((aligned (sizeof(uint64_t))));
};

enum chap_type_e {
	CHAP_TYPE_OUT,
	CHAP_TYPE_IN,
};

enum iscsi_chap_param {
	ISCSI_CHAP_PARAM_INDEX,
	ISCSI_CHAP_PARAM_CHAP_TYPE,
	ISCSI_CHAP_PARAM_USERNAME,
	ISCSI_CHAP_PARAM_PASSWORD,
	ISCSI_CHAP_PARAM_PASSWORD_LEN
};

#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;
};

#define ISCSI_HOST_STATS_CUSTOM_MAX             32
#define ISCSI_HOST_STATS_CUSTOM_DESC_MAX        64
struct iscsi_host_stats_custom {
	char desc[ISCSI_HOST_STATS_CUSTOM_DESC_MAX];
	uint64_t value;
};

/* struct iscsi_offload_host_stats: Host statistics,
 * Include statistics for MAC, IP, TCP & iSCSI.
 */
struct iscsi_offload_host_stats {
	/* MAC */
	uint64_t mactx_frames;
	uint64_t mactx_bytes;
	uint64_t mactx_multicast_frames;
	uint64_t mactx_broadcast_frames;
	uint64_t mactx_pause_frames;
	uint64_t mactx_control_frames;
	uint64_t mactx_deferral;
	uint64_t mactx_excess_deferral;
	uint64_t mactx_late_collision;
	uint64_t mactx_abort;
	uint64_t mactx_single_collision;
	uint64_t mactx_multiple_collision;
	uint64_t mactx_collision;
	uint64_t mactx_frames_dropped;
	uint64_t mactx_jumbo_frames;
	uint64_t macrx_frames;
	uint64_t macrx_bytes;
	uint64_t macrx_unknown_control_frames;
	uint64_t macrx_pause_frames;
	uint64_t macrx_control_frames;
	uint64_t macrx_dribble;
	uint64_t macrx_frame_length_error;
	uint64_t macrx_jabber;
	uint64_t macrx_carrier_sense_error;
	uint64_t macrx_frame_discarded;
	uint64_t macrx_frames_dropped;
	uint64_t mac_crc_error;
	uint64_t mac_encoding_error;
	uint64_t macrx_length_error_large;
	uint64_t macrx_length_error_small;
	uint64_t macrx_multicast_frames;
	uint64_t macrx_broadcast_frames;
	/* IP */
	uint64_t iptx_packets;
	uint64_t iptx_bytes;
	uint64_t iptx_fragments;
	uint64_t iprx_packets;
	uint64_t iprx_bytes;
	uint64_t iprx_fragments;
	uint64_t ip_datagram_reassembly;
	uint64_t ip_invalid_address_error;
	uint64_t ip_error_packets;
	uint64_t ip_fragrx_overlap;
	uint64_t ip_fragrx_outoforder;
	uint64_t ip_datagram_reassembly_timeout;
	uint64_t ipv6tx_packets;
	uint64_t ipv6tx_bytes;
	uint64_t ipv6tx_fragments;
	uint64_t ipv6rx_packets;
	uint64_t ipv6rx_bytes;
	uint64_t ipv6rx_fragments;
	uint64_t ipv6_datagram_reassembly;
	uint64_t ipv6_invalid_address_error;
	uint64_t ipv6_error_packets;
	uint64_t ipv6_fragrx_overlap;
	uint64_t ipv6_fragrx_outoforder;
	uint64_t ipv6_datagram_reassembly_timeout;
	/* TCP */
	uint64_t tcptx_segments;
	uint64_t tcptx_bytes;
	uint64_t tcprx_segments;
	uint64_t tcprx_byte;
	uint64_t tcp_duplicate_ack_retx;
	uint64_t tcp_retx_timer_expired;
	uint64_t tcprx_duplicate_ack;
	uint64_t tcprx_pure_ackr;
	uint64_t tcptx_delayed_ack;
	uint64_t tcptx_pure_ack;
	uint64_t tcprx_segment_error;
	uint64_t tcprx_segment_outoforder;
	uint64_t tcprx_window_probe;
	uint64_t tcprx_window_update;
	uint64_t tcptx_window_probe_persist;
	/* ECC */
	uint64_t ecc_error_correction;
	/* iSCSI */
	uint64_t iscsi_pdu_tx;
	uint64_t iscsi_data_bytes_tx;
	uint64_t iscsi_pdu_rx;
	uint64_t iscsi_data_bytes_rx;
	uint64_t iscsi_io_completed;
	uint64_t iscsi_unexpected_io_rx;
	uint64_t iscsi_format_error;
	uint64_t iscsi_hdr_digest_error;
	uint64_t iscsi_data_digest_error;
	uint64_t iscsi_sequence_error;
	/*
	 * iSCSI Custom Host Statistics support, i.e. Transport could
	 * extend existing host statistics with its own specific statistics
	 * up to ISCSI_HOST_STATS_CUSTOM_MAX
	 */
	uint32_t custom_length;
	struct iscsi_host_stats_custom custom[]
		__aligned(sizeof(uint64_t));
};

#endif