1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright 2014 Nexenta Systems, Inc. All rights reserved.
25 * Copyright (c) 2017, Joyent, Inc. All rights reserved.
26 */
27
28 #ifndef _ISCSIT_H_
29 #define _ISCSIT_H_
30
31 #include <sys/iscsit/iscsi_if.h>
32 #include <sys/iscsit/iscsit_common.h>
33
34 #include "iscsit_authclient.h"
35
36 /*
37 * For some reason iscsi_protocol.h lists the max version as "0x02" and the
38 * min version as "0x00". RFC3720 clearly states that the current version
39 * number is 0x00 so that is what we will use.
40 */
41 #define ISCSIT_MIN_VERSION 0x00
42 #define ISCSIT_MAX_VERSION 0x00
43 #define ISCSIT_MAX_CONNECTIONS 32 /* MC/S support */
44 #define ISCSIT_MAX_RECV_DATA_SEGMENT_LENGTH (32*1024)
45 #define ISCSIT_MAX_BURST_LENGTH (1024*1024)
46 #define ISCSIT_MAX_FIRST_BURST_LENGTH ISCSI_DEFAULT_FIRST_BURST_LENGTH
47 #define ISCSIT_MAX_TIME2WAIT ISCSI_MAX_TIME2WAIT
48 #define ISCSIT_MAX_TIME2RETAIN ISCSI_DEFAULT_TIME_TO_RETAIN
49 #define ISCSIT_MAX_OUTSTANDING_R2T ISCSI_DEFAULT_MAX_OUT_R2T
50 #define ISCSIT_MAX_ERROR_RECOVERY_LEVEL 0
51 #define ISCSIT_MAX_OUTSTANDING_UNEXPECTED_PDUS 0
52
53 #define ISCSIT_DEFAULT_TPG "iscsit-default-tpg"
54 #define ISCSIT_DEFAULT_TPGT 1
55
56 #define ISCSI_MAX_TSIH 0xffff
57 #define ISCSI_UNSPEC_TSIH 0
58
59 /* Max targets per system */
60 #define ISCSIT_MAX_TARGETS 1024
61
62 #define ISCSIT_MAX_WINDOW 1024
63 #define ISCSIT_RXPDU_QUEUE_LEN 2048
64
65 /*
66 * MC/S: A timeout is maintained to recover from lost CmdSN (holes in the
67 * CmdSN ordering). When the timeout is reached, the ExpCmdSN is advanced
68 * past the hole to continue processing the queued commands. This value is
69 * system-tunable (volatile rxpdu_queue_threshold) and should be in the
70 * range from 5 to 30 seconds.
71 */
72 #define ISCSIT_RXPDU_QUEUE_THRESHOLD 5 /* 5 seconds */
73 #define ISCSIT_RXPDU_QUEUE_MONITOR_INTERVAL 5 /* 5 seconds */
74
75 /* Time in seconds to wait between calls to stmf_deregister_local_port */
76 #define TGT_DEREG_RETRY_SECONDS 1
77
78 #define ISCSIT_GLOBAL_LOCK(rw) rw_enter(&iscsit_global.global_rwlock, (rw))
79 #define ISCSIT_GLOBAL_UNLOCK() rw_exit(&iscsit_global.global_rwlock)
80
81 /* Circular buffer to hold the out-of-order PDUs in MC/S */
82 typedef struct {
83 idm_pdu_t *cb_buffer[ISCSIT_RXPDU_QUEUE_LEN];
84 int cb_num_elems;
85 } iscsit_cbuf_t;
86
87 /*
88 * Used for serial number arithmetic (RFC 1982)
89 */
90 #define ISCSIT_SNA32_CHECK 0x80000000
91
92 typedef struct {
93 char tpg_name[MAX_TPG_NAMELEN];
94 kmutex_t tpg_mutex;
95 idm_refcnt_t tpg_refcnt;
96 int tpg_online;
97 avl_tree_t tpg_portal_list;
98 avl_node_t tpg_global_ln;
99 list_node_t tpg_delete_ln;
100 } iscsit_tpg_t;
101
102 #define IS_DEFAULT_TPGT(TPGT) \
103 (((TPGT) != NULL) && \
104 ((TPGT)->tpgt_tpg == iscsit_global.global_default_tpg))
105
106 typedef struct {
107 iscsit_tpg_t *tpgt_tpg;
108 idm_refcnt_t tpgt_refcnt;
109 avl_node_t tpgt_tgt_ln;
110 list_node_t tpgt_delete_ln;
111 uint16_t tpgt_tag;
112 boolean_t tpgt_needs_tpg_offline;
113 } iscsit_tpgt_t;
114
115 typedef struct {
116 struct sockaddr_storage portal_addr;
117 int portal_online;
118 idm_refcnt_t portal_refcnt;
119 avl_node_t portal_tpg_ln;
120 iscsit_tpg_t *portal_tpg;
121 idm_svc_t *portal_svc;
122 boolean_t portal_default;
123 void *portal_isns;
124 } iscsit_portal_t;
125
126
127 /* Target states and events, update iscsit_ts_name table whenever modified */
128 typedef enum {
129 TS_UNDEFINED = 0,
130 TS_CREATED,
131 TS_ONLINING,
132 TS_ONLINE,
133 TS_STMF_ONLINE,
134 TS_DELETING_NEED_OFFLINE,
135 TS_OFFLINING,
136 TS_OFFLINE,
137 TS_STMF_OFFLINE,
138 TS_DELETING_STMF_DEREG,
139 TS_DELETING_STMF_DEREG_FAIL,
140 TS_DELETING,
141 TS_MAX_STATE
142 } iscsit_tgt_state_t;
143
144 #ifdef ISCSIT_TGT_SM_STRINGS
145 static const char *iscsit_ts_name[TS_MAX_STATE+1] = {
146 "TS_UNDEFINED",
147 "TS_CREATED",
148 "TS_ONLINING",
149 "TS_ONLINE",
150 "TS_STMF_ONLINE",
151 "TS_DELETING_NEED_OFFLINE",
152 "TS_OFFLINING",
153 "TS_OFFLINE",
154 "TS_STMF_OFFLINE",
155 "TS_DELETING_STMF_DEREG",
156 "TS_DELETING_STMF_DEREG_FAIL",
157 "TS_DELETING",
158 "TS_MAX_STATE"
159 };
160 #endif
161
162 typedef enum {
163 TE_UNDEFINED = 0,
164 TE_STMF_ONLINE_REQ,
165 TE_ONLINE_SUCCESS,
166 TE_ONLINE_FAIL,
167 TE_STMF_ONLINE_COMPLETE_ACK,
168 TE_STMF_OFFLINE_REQ,
169 TE_OFFLINE_COMPLETE,
170 TE_STMF_OFFLINE_COMPLETE_ACK,
171 TE_DELETE,
172 TE_STMF_DEREG_SUCCESS,
173 TE_STMF_DEREG_FAIL,
174 TE_STMF_DEREG_RETRY,
175 TE_WAIT_REF_COMPLETE,
176 TE_MAX_EVENT
177 } iscsit_tgt_event_t;
178
179 #ifdef ISCSIT_TGT_SM_STRINGS
180 static const char *iscsit_te_name[TE_MAX_EVENT+1] = {
181 "TE_UNDEFINED",
182 "TE_STMF_ONLINE_REQ",
183 "TE_ONLINE_SUCCESS",
184 "TE_ONLINE_FAIL",
185 "TE_STMF_ONLINE_COMPLETE_ACK",
186 "TE_STMF_OFFLINE_REQ",
187 "TE_OFFLINE_COMPLETE",
188 "TE_STMF_OFFLINE_COMPLETE_ACK",
189 "TE_DELETE",
190 "TE_STMF_DEREG_SUCCESS",
191 "TE_STMF_DEREG_FAIL",
192 "TE_STMF_DEREG_RETRY",
193 "TE_WAIT_REF_COMPLETE",
194 "TE_MAX_EVENT"
195 };
196 #endif
197
198 typedef struct {
199 char *target_name;
200 nvlist_t *target_props;
201 kmutex_t target_mutex;
202 idm_refcnt_t target_refcnt;
203 idm_refcnt_t target_sess_refcnt;
204 avl_tree_t target_tpgt_list;
205 avl_tree_t target_sess_list;
206 avl_node_t target_global_ln;
207 avl_node_t target_global_deleted_ln;
208 /* STMF lport == iSCSI target */
209 scsi_devid_desc_t *target_devid;
210 stmf_local_port_t *target_stmf_lport;
211 uint8_t target_stmf_lport_registered;
212
213 /* Target state */
214 boolean_t target_sm_busy;
215 boolean_t target_deleting;
216 iscsit_tgt_state_t target_state;
217 iscsit_tgt_state_t target_last_state;
218 sm_audit_buf_t target_state_audit;
219 list_t target_events;
220 uint64_t target_generation;
221 } iscsit_tgt_t;
222
223 typedef struct {
224 char ini_name[MAX_ISCSI_NODENAMELEN];
225 nvlist_t *ini_props;
226 avl_node_t ini_global_ln;
227 } iscsit_ini_t;
228
229 /*
230 * iSCSI Auth Information
231 */
232 typedef struct conn_auth {
233 char ca_tgt_chapuser[iscsitAuthStringMaxLength];
234 uint8_t ca_tgt_chapsecret[iscsitAuthStringMaxLength];
235 int ca_tgt_chapsecretlen;
236
237 char ca_ini_chapuser[iscsitAuthStringMaxLength];
238 uint8_t ca_ini_chapsecret[iscsitAuthStringMaxLength];
239 int ca_ini_chapsecretlen;
240
241 /* RADIUS authentication information */
242 boolean_t ca_use_radius;
243 struct sockaddr_storage ca_radius_server;
244 uint8_t ca_radius_secret[iscsitAuthStringMaxLength];
245 int ca_radius_secretlen;
246
247 /* authentication method list */
248 iscsit_auth_method_t ca_method_valid_list[iscsitAuthMethodMaxCount];
249
250 /* Target alias */
251 char ca_tgt_alias[MAX_ISCSI_NODENAMELEN];
252 } conn_auth_t;
253
254 /*
255 * We have three state machines (so far) between the IDM connection state
256 * machine, the session state machine, and the login state machine. All
257 * of these states have some concept of "full feature mode". It's going
258 * to be obnoxious if we use a mixture of these "ffp" representations
259 * since it will be difficult to ensure the three state machines
260 * transition at exactly the same time. We should drive decisions that
261 * depend on FFP from the IDM state machine which is actually snooping
262 * the iSCSI PDU's and will always transition at the correct time.
263 *
264 * A consequence of this approach is that there is a window just after
265 * login completes where we may get a SCSI request but the session
266 * or login state machine has not quite transitioned to "FFP". Whether
267 * this is a problem depends on how we use those state machines. This
268 * is what we should use them for:
269 *
270 * IDM Connection state machine - Decisions related to command processing
271 * including whether a connection is in FFP
272 *
273 * Session state machine - Summarize the state of all available connections
274 * for the purposes of ERL1, ERL2 and MC/S. A session in LOGGED_IN state
275 * should always have at least one FFP connection but there may be a brief
276 * window where a session in ACTIVE might have one or more FFP connections
277 * even though ACTIVE is not strictly an FFP state according to the RFC.
278 *
279 * Login state machine -- drive the login process, collect negotiated
280 * parameters. Another side effect of this approach is that we may get
281 * the "notify ffp" callback from the IDM connection state machine before
282 * the login state machine has actually transitioned to FFP state.
283 */
284
285 struct iscsit_conn_s;
286
287 /* Update iscsit_ss_name table whenever session states are modified */
288 typedef enum {
289 SS_UNDEFINED = 0,
290 SS_Q1_FREE,
291 SS_Q2_ACTIVE,
292 SS_Q3_LOGGED_IN,
293 SS_Q4_FAILED,
294 SS_Q5_CONTINUE,
295 SS_Q6_DONE,
296 SS_Q7_ERROR,
297 /* Add new session states above SS_MAX_STATE */
298 SS_MAX_STATE
299 } iscsit_session_state_t;
300
301 #ifdef ISCSIT_SESS_SM_STRINGS
302 /* An array of state text values, for use in logging state transitions */
303 static const char *iscsit_ss_name[SS_MAX_STATE+1] = {
304 "SS_UNDEFINED",
305 "SS_Q1_FREE",
306 "SS_Q2_ACTIVE",
307 "SS_Q3_LOGGED_IN",
308 "SS_Q4_FAILED",
309 "SS_Q5_CONTINUE",
310 "SS_Q6_DONE",
311 "SS_Q7_ERROR",
312 "SS_MAX_STATE"
313 };
314 #endif
315
316 /* Update iscsit_se_name table whenever session events are modified */
317 typedef enum {
318 SE_UNDEFINED = 0,
319 SE_CONN_IN_LOGIN, /* From login state machine */
320 SE_CONN_LOGGED_IN, /* FFP enabled client notification */
321 SE_CONN_FFP_FAIL, /* FFP disabled client notification */
322 SE_CONN_FFP_DISABLE, /* FFP disabled client notification */
323 SE_CONN_FAIL, /* Conn destroy client notification */
324 SE_SESSION_CLOSE, /* FFP disabled client notification */
325 SE_SESSION_REINSTATE, /* From login state machine */
326 SE_SESSION_TIMEOUT, /* Internal */
327 SE_SESSION_CONTINUE, /* From login state machine */
328 SE_SESSION_CONTINUE_FAIL, /* From login state machine? */
329 /* Add new events above SE_MAX_EVENT */
330 SE_MAX_EVENT
331 } iscsit_session_event_t;
332
333 #ifdef ISCSIT_SESS_SM_STRINGS
334 /* An array of event text values, for use in logging events */
335 static const char *iscsit_se_name[SE_MAX_EVENT+1] = {
336 "SE_UNDEFINED",
337 "SE_CONN_IN_LOGIN",
338 "SE_CONN_LOGGED_IN",
339 "SE_CONN_FFP_FAIL",
340 "SE_CONN_FFP_DISABLE",
341 "SE_CONN_FAIL",
342 "SE_SESSION_CLOSE",
343 "SE_SESSION_REINSTATE",
344 "SE_SESSION_TIMEOUT",
345 "SE_SESSION_CONTINUE",
346 "SE_SESSION_CONTINUE_FAIL",
347 "SE_MAX_EVENT"
348 };
349 #endif
350
351 /*
352 * Set in ist_tgt after iscsit_tgt_unbind_sess to differentiate an unbound
353 * session from a discovery session.
354 */
355 #define SESS_UNBOUND_FROM_TGT -1
356
357 typedef struct {
358 stmf_scsi_session_t *ist_stmf_sess;
359 stmf_local_port_t *ist_lport;
360 iscsit_tgt_t *ist_tgt;
361 idm_refcnt_t ist_refcnt;
362 kmem_cache_t *ist_task_cache;
363 kmutex_t ist_sn_mutex;
364 kmutex_t ist_mutex;
365 kcondvar_t ist_cv;
366 iscsit_session_state_t ist_state;
367 iscsit_session_state_t ist_last_state;
368 sm_audit_buf_t ist_state_audit;
369 boolean_t ist_sm_busy;
370 boolean_t ist_sm_complete;
371 boolean_t ist_admin_close;
372 list_t ist_events;
373 int ist_conn_count;
374 int ist_ffp_conn_count;
375 struct iscsit_conn_s *ist_failed_conn;
376 timeout_id_t ist_state_timeout;
377 list_t ist_conn_list;
378 avl_node_t ist_tgt_ln;
379 char *ist_initiator_name;
380 char *ist_initiator_alias;
381 char *ist_target_name;
382 char *ist_target_alias;
383 uint8_t ist_isid[ISCSI_ISID_LEN];
384 uint16_t ist_tsih;
385 uint16_t ist_tpgt_tag;
386 uint32_t ist_expcmdsn;
387 uint32_t ist_maxcmdsn;
388 avl_tree_t ist_task_list;
389 iscsit_cbuf_t *ist_rxpdu_queue;
390 } iscsit_sess_t;
391
392 /* Update iscsit_ils_name table whenever login states are modified */
393 typedef enum {
394 ILS_UNDEFINED = 0,
395 ILS_LOGIN_INIT,
396 ILS_LOGIN_WAITING, /* Waiting for more login PDU's */
397 ILS_LOGIN_PROCESSING, /* Processing login request */
398 ILS_LOGIN_RESPONDING, /* Sending login response */
399 ILS_LOGIN_RESPONDED, /* Sent login response (no trans. to FFP) */
400 ILS_LOGIN_FFP, /* Sending last login PDU for final response */
401 ILS_LOGIN_DONE, /* Last login PDU sent (so we can free it) */
402 ILS_LOGIN_ERROR, /* Login error, login failed */
403 /* Add new login states above ILS_MAX_STATE */
404 ILS_MAX_STATE
405 } iscsit_login_state_t;
406
407 #ifdef ISCSIT_LOGIN_SM_STRINGS
408 /* An array of login state text values, for use in logging login progress */
409 static const char *iscsit_ils_name[ILS_MAX_STATE+1] = {
410 "ILS_UNDEFINED",
411 "ILS_LOGIN_INIT",
412 "ILS_LOGIN_WAITING",
413 "ILS_LOGIN_PROCESSING",
414 "ILS_LOGIN_RESPONDING",
415 "ILS_LOGIN_RESPONDED",
416 "ILS_LOGIN_FFP",
417 "ILS_LOGIN_DONE",
418 "ILS_LOGIN_ERROR",
419 "ILS_MAX_STATE"
420 };
421 #endif
422
423 /* Update iscsit_ile_name table whenever login events are modified */
424 typedef enum {
425 ILE_UNDEFINED = 0,
426 ILE_LOGIN_RCV,
427 ILE_LOGIN_RESP_READY,
428 ILE_LOGIN_FFP,
429 ILE_LOGIN_RESP_COMPLETE,
430 ILE_LOGIN_ERROR,
431 ILE_LOGIN_CONN_ERROR,
432 /* Add new login events above ILE_MAX_EVENT */
433 ILE_MAX_EVENT
434 } iscsit_login_event_t;
435
436 #ifdef ISCSIT_LOGIN_SM_STRINGS
437 /* An array of login event text values, for use in logging login events */
438 static const char *iscsit_ile_name[ILE_MAX_EVENT+1] = {
439 "ILE_UNDEFINED",
440 "ILE_LOGIN_RCV",
441 "ILE_LOGIN_RESP_READY",
442 "ILE_LOGIN_FFP",
443 "ILE_LOGIN_RESP_COMPLETE",
444 "ILE_LOGIN_ERROR",
445 "ILE_LOGIN_CONN_ERROR",
446 "ILE_MAX_EVENT"
447 };
448 #endif
449
450 typedef struct {
451 uint32_t op_initial_params_set:1,
452 op_discovery_session:1,
453 op_initial_r2t:1,
454 op_immed_data:1,
455 op_data_pdu_in_order:1,
456 op_data_sequence_in_order:1,
457 op_declarative_params_set:1;
458 uint64_t op_max_connections;
459 uint64_t op_max_recv_data_segment_length;
460 uint64_t op_max_burst_length;
461 uint64_t op_first_burst_length;
462 uint64_t op_default_time_2_wait;
463 uint64_t op_default_time_2_retain;
464 uint64_t op_max_outstanding_r2t;
465 uint64_t op_error_recovery_level;
466 } iscsit_op_params_t;
467
468 typedef struct {
469 iscsit_login_state_t icl_login_state;
470 iscsit_login_state_t icl_login_last_state;
471 sm_audit_buf_t icl_state_audit;
472 boolean_t icl_busy;
473 boolean_t icl_login_complete;
474 kmutex_t icl_mutex;
475 uint32_t icl_login_itt;
476 uint8_t icl_login_csg;
477 uint8_t icl_login_nsg;
478 boolean_t icl_login_transit;
479 conn_auth_t icl_auth;
480 iscsit_auth_client_t icl_auth_client;
481 int icl_auth_pass;
482 list_t icl_login_events;
483 list_t icl_pdu_list;
484 uint16_t icl_tsih;
485 uint8_t icl_isid[ISCSI_ISID_LEN];
486 uint32_t icl_cmdsn;
487 uint16_t icl_tpgt_tag;
488 char *icl_target_name;
489 char *icl_target_alias;
490 char *icl_initiator_name;
491 char *icl_login_resp_buf;
492 void *icl_login_resp_itb; /* mult-pdu idm buf */
493 int icl_login_resp_len; /* For kmem_free */
494 int icl_login_resp_valid_len;
495 uint8_t icl_login_resp_err_class;
496 uint8_t icl_login_resp_err_detail;
497 iscsi_login_rsp_hdr_t *icl_login_resp_tmpl;
498 nvlist_t *icl_request_nvlist;
499 nvlist_t *icl_response_nvlist;
500 nvlist_t *icl_negotiated_values;
501 } iscsit_conn_login_t;
502
503 #define SET_LOGIN_ERROR(SLE_ICT, SLE_CLASS, SLE_DETAIL) \
504 (SLE_ICT)->ict_login_sm.icl_login_resp_err_class = (SLE_CLASS); \
505 (SLE_ICT)->ict_login_sm.icl_login_resp_err_detail = (SLE_DETAIL);
506
507 typedef struct iscsit_conn_s {
508 idm_conn_t *ict_ic;
509 iscsit_sess_t *ict_sess;
510 kmutex_t ict_mutex;
511 idm_refcnt_t ict_refcnt;
512 idm_refcnt_t ict_dispatch_refcnt;
513 list_node_t ict_sess_ln;
514 iscsit_conn_login_t ict_login_sm;
515 iscsit_op_params_t ict_op;
516 uint16_t ict_cid;
517 uint32_t ict_statsn;
518 kmutex_t ict_statsn_mutex;
519 uint32_t ict_keepalive_ttt;
520 struct iscsit_conn_s *ict_reinstate_conn;
521 uint32_t ict_reinstating:1,
522 ict_lost:1,
523 ict_destroyed:1;
524 /*
525 * Parameters for processing text commands
526 */
527 char *ict_text_rsp_buf;
528 uint32_t ict_text_rsp_len;
529 uint32_t ict_text_rsp_valid_len;
530 uint32_t ict_text_rsp_off;
531 uint32_t ict_text_req_itt; /* from initiator */
532 uint32_t ict_text_rsp_ttt;
533 } iscsit_conn_t;
534
535 #define ICT_FLAGS_DISCOVERY 0x00000001
536
537 typedef struct {
538 idm_buf_t *ibuf_idm_buf;
539 stmf_data_buf_t *ibuf_stmf_buf;
540 idm_pdu_t *ibuf_immed_data_pdu;
541 boolean_t ibuf_is_immed;
542 } iscsit_buf_t;
543
544 typedef struct {
545 scsi_task_t *it_stmf_task;
546 idm_task_t *it_idm_task;
547 iscsit_buf_t *it_immed_data;
548 iscsit_conn_t *it_ict;
549 kmutex_t it_mutex;
550 idm_pdu_t *it_tm_pdu;
551 uint32_t it_stmf_abort:1,
552 it_aborted:1,
553 it_active:1,
554 it_tm_task:1,
555 it_tm_responded:1;
556 uint32_t it_cmdsn;
557 uint32_t it_itt;
558 uint32_t it_ttt;
559 avl_node_t it_sess_ln;
560 } iscsit_task_t;
561
562 typedef struct iscsit_isns_cfg {
563 kmutex_t isns_mutex;
564 boolean_t isns_state;
565 list_t isns_svrs;
566 } iscsit_isns_cfg_t;
567
568 /*
569 * State values for the iscsit service
570 */
571 typedef enum {
572 ISE_UNDEFINED = 0,
573 ISE_DETACHED,
574 ISE_DISABLED,
575 ISE_ENABLING,
576 ISE_ENABLED,
577 ISE_BUSY,
578 ISE_DISABLING
579 } iscsit_service_enabled_t;
580
581
582 typedef struct {
583 iscsit_service_enabled_t global_svc_state;
584 dev_info_t *global_dip;
585 ldi_ident_t global_li;
586 nvlist_t *global_props;
587 stmf_port_provider_t *global_pp;
588 stmf_dbuf_store_t *global_dbuf_store;
589 taskq_t *global_dispatch_taskq;
590 idm_refcnt_t global_refcnt;
591 avl_tree_t global_discovery_sessions;
592 avl_tree_t global_target_list;
593 list_t global_deleted_target_list;
594 avl_tree_t global_tpg_list;
595 avl_tree_t global_ini_list;
596 iscsit_tpg_t *global_default_tpg;
597 vmem_t *global_tsih_pool;
598 iscsit_isns_cfg_t global_isns_cfg;
599 iscsi_radius_props_t global_radius_server;
600 krwlock_t global_rwlock;
601 kmutex_t global_state_mutex;
602 } iscsit_global_t;
603
604 extern iscsit_global_t iscsit_global;
605
606 void
607 iscsit_global_hold();
608
609 void
610 iscsit_global_rele();
611
612 void
613 iscsit_global_wait_ref();
614
615 idm_status_t
616 iscsit_login_sm_init(iscsit_conn_t *ict);
617
618 void
619 iscsit_login_sm_fini(iscsit_conn_t *ict);
620
621 void
622 iscsit_login_sm_event(iscsit_conn_t *ic, iscsit_login_event_t event,
623 idm_pdu_t *pdu);
624
625 void
626 iscsit_login_sm_event_locked(iscsit_conn_t *ic, iscsit_login_event_t event,
627 idm_pdu_t *pdu);
628
629 int
630 iscsit_is_v4_mapped(struct sockaddr_storage *sa, struct sockaddr_storage *v4sa);
631
632 void
633 iscsit_send_async_event(iscsit_conn_t *ict, uint8_t async_event);
634
635 void
636 iscsit_pdu_tx(idm_pdu_t *pdu);
637
638 void
639 iscsit_send_reject(iscsit_conn_t *ict, idm_pdu_t *rejected_pdu, uint8_t reason);
640
641 void
642 iscsit_text_cmd_fini(iscsit_conn_t *ict);
643
644 /*
645 * IDM conn ops
646 */
647
648 idm_rx_pdu_cb_t iscsit_op_scsi_cmd;
649 idm_rx_pdu_cb_t iscsit_rx_pdu;
650 idm_rx_pdu_error_cb_t iscsit_rx_pdu_error;
651 idm_rx_pdu_cb_t iscsit_rx_scsi_rsp;
652 idm_task_cb_t iscsit_task_aborted;
653 idm_client_notify_cb_t iscsit_client_notify;
654 idm_build_hdr_cb_t iscsit_build_hdr;
655 idm_update_statsn_cb_t iscsit_update_statsn;
656 idm_keepalive_cb_t iscsit_keepalive;
657
658 /*
659 * lport entry points
660 */
661 stmf_status_t
662 iscsit_xfer_scsi_data(scsi_task_t *task, stmf_data_buf_t *dbuf,
663 uint32_t ioflags);
664
665 stmf_status_t
666 iscsit_send_scsi_status(scsi_task_t *task, uint32_t ioflags);
667
668 void
669 iscsit_lport_task_free(scsi_task_t *task);
670
671 stmf_status_t
672 iscsit_abort(stmf_local_port_t *lport, int abort_cmd, void *arg,
673 uint32_t flags);
674
675 void
676 iscsit_ctl(stmf_local_port_t *lport, int cmd, void *arg);
677
678 /*
679 * Connection functions
680 */
681 idm_status_t
682 iscsit_conn_reinstate(iscsit_conn_t *existing_ict, iscsit_conn_t *ict);
683
684 void
685 iscsit_conn_destroy_done(iscsit_conn_t *ict);
686
687 void
688 iscsit_conn_set_auth(iscsit_conn_t *ict);
689
690 void
691 iscsit_conn_hold(iscsit_conn_t *ict);
692
693 void
694 iscsit_conn_rele(iscsit_conn_t *ict);
695
696 void
697 iscsit_conn_logout(iscsit_conn_t *ict);
698
699 /*
700 * Session functions
701 */
702 int
703 iscsit_sess_avl_compare(const void *void_sess1, const void *void_sess2);
704
705 iscsit_sess_t *
706 iscsit_sess_create(iscsit_tgt_t *tgt, iscsit_conn_t *ict,
707 uint32_t cmdsn, uint8_t *isid, uint16_t tag,
708 char *initiator_name, char *target_name,
709 uint8_t *error_class, uint8_t *error_detail);
710
711 void
712 iscsit_sess_destroy(iscsit_sess_t *ist);
713
714 void
715 iscsit_sess_hold(iscsit_sess_t *ist);
716
717 idm_status_t
718 iscsit_sess_check_hold(iscsit_sess_t *ist);
719
720 void
721 iscsit_sess_rele(iscsit_sess_t *ist);
722
723 iscsit_conn_t *
724 iscsit_sess_lookup_conn(iscsit_sess_t *ist, uint16_t cid);
725
726 void
727 iscsit_sess_bind_conn(iscsit_sess_t *ist, iscsit_conn_t *ict);
728
729 void
730 iscsit_sess_unbind_conn(iscsit_sess_t *ist, iscsit_conn_t *ict);
731
732 void
733 iscsit_sess_close(iscsit_sess_t *ist);
734
735 iscsit_sess_t *
736 iscsit_sess_reinstate(iscsit_tgt_t *tgt, iscsit_sess_t *ist, iscsit_conn_t *ict,
737 uint8_t *error_class, uint8_t *error_detail);
738
739 void
740 iscsit_sess_sm_event(iscsit_sess_t *ist, iscsit_session_event_t event,
741 iscsit_conn_t *ict);
742
743 /*
744 * Target, TPGT, TPGT and portal functions
745 */
746
747 void
748 iscsit_tgt_sm_event(iscsit_tgt_t *tgt, iscsit_tgt_event_t event);
749
750 void
751 tgt_sm_event_locked(iscsit_tgt_t *tgt, iscsit_tgt_event_t event);
752
753 it_cfg_status_t
754 iscsit_config_merge_tgt(it_config_t *cfg);
755
756 void
757 iscsit_config_destroy_tgts(list_t *tgt_del_list);
758
759 void
760 iscsit_config_destroy_tpgts(list_t *tpgt_del_list);
761
762 iscsit_tgt_t *
763 iscsit_tgt_lookup(char *target_name);
764
765 iscsit_tgt_t *
766 iscsit_tgt_lookup_locked(char *target_name);
767
768 int
769 iscsit_tgt_avl_compare(const void *void_tgt1, const void *void_tgt2);
770
771 int
772 iscsit_tpgt_avl_compare(const void *void_tpgt1, const void *void_tpgt2);
773
774 void
775 iscsit_tgt_hold(iscsit_tgt_t *tgt);
776
777 void
778 iscsit_tgt_rele(iscsit_tgt_t *tgt);
779
780 iscsit_tpgt_t *
781 iscsit_tgt_lookup_tpgt(iscsit_tgt_t *tgt, uint16_t tag);
782
783 void
784 iscsit_tpgt_hold(iscsit_tpgt_t *tpgt);
785
786 void
787 iscsit_tpgt_rele(iscsit_tpgt_t *tpgt);
788
789 iscsit_portal_t *
790 iscsit_tgt_lookup_portal(iscsit_tgt_t *tgt, struct sockaddr_storage *sa,
791 iscsit_tpgt_t **output_tpgt);
792
793 iscsit_sess_t *
794 iscsit_tgt_lookup_sess(iscsit_tgt_t *tgt, char *initiator_name,
795 uint8_t *isid, uint16_t tsih, uint16_t tag);
796
797 void
798 iscsit_tgt_bind_sess(iscsit_tgt_t *tgt, iscsit_sess_t *sess);
799
800 void
801 iscsit_tgt_unbind_sess(iscsit_tgt_t *tgt, iscsit_sess_t *sess);
802
803 it_cfg_status_t
804 iscsit_config_merge_tpg(it_config_t *cfg, list_t *tpg_del_list);
805
806 void
807 iscsit_config_destroy_tpgs(list_t *tpg_del_list);
808
809 iscsit_tpg_t *
810 iscsit_tpg_lookup(char *tpg_name);
811
812 int
813 iscsit_tpg_avl_compare(const void *void_tpg1, const void *void_tpg2);
814
815 void
816 iscsit_tpg_hold(iscsit_tpg_t *tpg);
817
818 void
819 iscsit_tpg_rele(iscsit_tpg_t *tpg);
820
821 iscsit_tpg_t *
822 iscsit_tpg_createdefault();
823
824 void
825 iscsit_tpg_destroydefault(iscsit_tpg_t *tpg);
826
827 idm_status_t
828 iscsit_tpg_online(iscsit_tpg_t *tpg);
829
830 void
831 iscsit_tpg_offline(iscsit_tpg_t *tpg);
832
833 iscsit_portal_t *
834 iscsit_tpg_portal_lookup(iscsit_tpg_t *tpg, struct sockaddr_storage *sa);
835
836 void
837 iscsit_portal_hold(iscsit_portal_t *portal);
838
839 void
840 iscsit_portal_rele(iscsit_portal_t *portal);
841
842 it_cfg_status_t
843 iscsit_config_merge_ini(it_config_t *cfg);
844
845 int
846 iscsit_ini_avl_compare(const void *void_ini1, const void *void_ini2);
847
848 iscsit_ini_t *
849 iscsit_ini_lookup_locked(char *ini_name);
850
851 int
852 iscsit_portal_avl_compare(const void *void_portal1, const void *void_portal2);
853
854 int
855 iscsit_verify_chap_resp(iscsit_conn_login_t *lsm,
856 unsigned int chap_i, uchar_t *chap_c, unsigned int challenge_len,
857 uchar_t *chap_r, unsigned int resp_len);
858
859 void
860 iscsit_rxpdu_queue_monitor_start(void);
861
862 void
863 iscsit_rxpdu_queue_monitor_stop(void);
864
865 #endif /* _ISCSIT_H_ */