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 */
26
27 #ifndef _ISCSIT_H_
28 #define _ISCSIT_H_
29
30 #include <sys/iscsit/iscsi_if.h>
31 #include <sys/iscsit/iscsit_common.h>
32
33 #include "iscsit_authclient.h"
34
35 /*
36 * For some reason iscsi_protocol.h lists the max version as "0x02" and the
37 * min version as "0x00". RFC3720 clearly states that the current version
38 * number is 0x00 so that is what we will use.
39 */
40 #define ISCSIT_MIN_VERSION 0x00
41 #define ISCSIT_MAX_VERSION 0x00
42 #define ISCSIT_MAX_CONNECTIONS 32 /* MC/S support */
43 #define ISCSIT_MAX_RECV_DATA_SEGMENT_LENGTH (32*1024)
44 #define ISCSIT_MAX_BURST_LENGTH (1024*1024)
45 #define ISCSIT_MAX_FIRST_BURST_LENGTH ISCSI_DEFAULT_FIRST_BURST_LENGTH
46 #define ISCSIT_MAX_TIME2WAIT ISCSI_MAX_TIME2WAIT
47 #define ISCSIT_MAX_TIME2RETAIN ISCSI_DEFAULT_TIME_TO_RETAIN
48 #define ISCSIT_MAX_OUTSTANDING_R2T ISCSI_DEFAULT_MAX_OUT_R2T
49 #define ISCSIT_MAX_ERROR_RECOVERY_LEVEL 0
50 #define ISCSIT_MAX_OUTSTANDING_UNEXPECTED_PDUS 0
51
52 #define ISCSIT_DEFAULT_TPG "iscsit-default-tpg"
53 #define ISCSIT_DEFAULT_TPGT 1
54
55 #define ISCSI_MAX_TSIH 0xffff
56 #define ISCSI_UNSPEC_TSIH 0
57
58 /* Max targets per system */
59 #define ISCSIT_MAX_TARGETS 1024
60
61 #define ISCSIT_MAX_WINDOW 1024
62 #define ISCSIT_RXPDU_QUEUE_LEN 2048
63
64 #define ISCSIT_CMDSN_LT_EXPCMDSN -1
65 #define ISCSIT_CMDSN_EQ_EXPCMDSN 1
66 #define ISCSIT_CMDSN_GT_EXPCMDSN 0
67 /*
68 * MC/S: A timeout is maintained to recover from lost CmdSN (holes in the
69 * CmdSN ordering). When the timeout is reached, the ExpCmdSN is advanced
70 * past the hole to continue processing the queued commands. This value is
71 * system-tunable (volatile rxpdu_queue_threshold) and should be in the
72 * range from 5 to 30 seconds.
73 */
74 #define ISCSIT_RXPDU_QUEUE_THRESHOLD 5 /* 5 seconds */
75 #define ISCSIT_RXPDU_QUEUE_MONITOR_INTERVAL 5 /* 5 seconds */
76
77 /* Time in seconds to wait between calls to stmf_deregister_local_port */
78 #define TGT_DEREG_RETRY_SECONDS 1
79
80 #define ISCSIT_GLOBAL_LOCK(rw) rw_enter(&iscsit_global.global_rwlock, (rw))
81 #define ISCSIT_GLOBAL_UNLOCK() rw_exit(&iscsit_global.global_rwlock)
82
83 /* Circular buffer to hold the out-of-order PDUs in MC/S */
84 typedef struct {
85 idm_pdu_t *cb_buffer[ISCSIT_RXPDU_QUEUE_LEN];
86 int cb_num_elems;
87 } iscsit_cbuf_t;
88
89 /*
90 * Used for serial number arithmetic (RFC 1982)
91 */
92 #define ISCSIT_SNA32_CHECK 0x80000000
93
94 typedef struct {
95 char tpg_name[MAX_TPG_NAMELEN];
96 kmutex_t tpg_mutex;
97 idm_refcnt_t tpg_refcnt;
98 int tpg_online;
99 avl_tree_t tpg_portal_list;
100 avl_node_t tpg_global_ln;
101 list_node_t tpg_delete_ln;
102 } iscsit_tpg_t;
103
104 #define IS_DEFAULT_TPGT(TPGT) \
105 (((TPGT) != NULL) && \
106 ((TPGT)->tpgt_tpg == iscsit_global.global_default_tpg))
107
108 typedef struct {
109 iscsit_tpg_t *tpgt_tpg;
110 idm_refcnt_t tpgt_refcnt;
111 avl_node_t tpgt_tgt_ln;
112 list_node_t tpgt_delete_ln;
113 uint16_t tpgt_tag;
114 boolean_t tpgt_needs_tpg_offline;
115 } iscsit_tpgt_t;
116
117 typedef struct {
118 struct sockaddr_storage portal_addr;
119 int portal_online;
120 idm_refcnt_t portal_refcnt;
121 avl_node_t portal_tpg_ln;
122 iscsit_tpg_t *portal_tpg;
123 idm_svc_t *portal_svc;
124 boolean_t portal_default;
125 void *portal_isns;
126 } iscsit_portal_t;
127
128
129 /* Target states and events, update iscsit_ts_name table whenever modified */
130 typedef enum {
131 TS_UNDEFINED = 0,
132 TS_CREATED,
133 TS_ONLINING,
134 TS_ONLINE,
135 TS_STMF_ONLINE,
136 TS_DELETING_NEED_OFFLINE,
137 TS_OFFLINING,
138 TS_OFFLINE,
139 TS_STMF_OFFLINE,
140 TS_DELETING_STMF_DEREG,
141 TS_DELETING_STMF_DEREG_FAIL,
142 TS_DELETING,
143 TS_MAX_STATE
144 } iscsit_tgt_state_t;
145
146 #ifdef ISCSIT_TGT_SM_STRINGS
147 static const char *iscsit_ts_name[TS_MAX_STATE+1] = {
148 "TS_UNDEFINED",
149 "TS_CREATED",
150 "TS_ONLINING",
151 "TS_ONLINE",
152 "TS_STMF_ONLINE",
153 "TS_DELETING_NEED_OFFLINE",
154 "TS_OFFLINING",
155 "TS_OFFLINE",
156 "TS_STMF_OFFLINE",
157 "TS_DELETING_STMF_DEREG",
158 "TS_DELETING_STMF_DEREG_FAIL",
159 "TS_DELETING",
160 "TS_MAX_STATE"
161 };
162 #endif
163
164 typedef enum {
165 TE_UNDEFINED = 0,
166 TE_STMF_ONLINE_REQ,
167 TE_ONLINE_SUCCESS,
168 TE_ONLINE_FAIL,
169 TE_STMF_ONLINE_COMPLETE_ACK,
170 TE_STMF_OFFLINE_REQ,
171 TE_OFFLINE_COMPLETE,
172 TE_STMF_OFFLINE_COMPLETE_ACK,
173 TE_DELETE,
174 TE_STMF_DEREG_SUCCESS,
175 TE_STMF_DEREG_FAIL,
176 TE_STMF_DEREG_RETRY,
177 TE_WAIT_REF_COMPLETE,
178 TE_MAX_EVENT
179 } iscsit_tgt_event_t;
180
181 #ifdef ISCSIT_TGT_SM_STRINGS
182 static const char *iscsit_te_name[TE_MAX_EVENT+1] = {
183 "TE_UNDEFINED",
184 "TE_STMF_ONLINE_REQ",
185 "TE_ONLINE_SUCCESS",
186 "TE_ONLINE_FAIL",
187 "TE_STMF_ONLINE_COMPLETE_ACK",
188 "TE_STMF_OFFLINE_REQ",
189 "TE_OFFLINE_COMPLETE",
190 "TE_STMF_OFFLINE_COMPLETE_ACK",
191 "TE_DELETE",
192 "TE_STMF_DEREG_SUCCESS",
193 "TE_STMF_DEREG_FAIL",
194 "TE_STMF_DEREG_RETRY",
195 "TE_WAIT_REF_COMPLETE",
196 "TE_MAX_EVENT"
197 };
198 #endif
199
200 typedef struct {
201 char *target_name;
202 nvlist_t *target_props;
203 kmutex_t target_mutex;
204 idm_refcnt_t target_refcnt;
205 idm_refcnt_t target_sess_refcnt;
206 avl_tree_t target_tpgt_list;
207 avl_tree_t target_sess_list;
208 avl_node_t target_global_ln;
209 avl_node_t target_global_deleted_ln;
210 /* STMF lport == iSCSI target */
211 scsi_devid_desc_t *target_devid;
212 stmf_local_port_t *target_stmf_lport;
213 uint8_t target_stmf_lport_registered;
214
215 /* Target state */
216 boolean_t target_sm_busy;
217 boolean_t target_deleting;
218 iscsit_tgt_state_t target_state;
219 iscsit_tgt_state_t target_last_state;
220 sm_audit_buf_t target_state_audit;
221 list_t target_events;
222 uint64_t target_generation;
223 } iscsit_tgt_t;
224
225 typedef struct {
226 char ini_name[MAX_ISCSI_NODENAMELEN];
227 nvlist_t *ini_props;
228 avl_node_t ini_global_ln;
229 } iscsit_ini_t;
230
231 /*
232 * iSCSI Auth Information
233 */
234 typedef struct conn_auth {
235 char ca_tgt_chapuser[iscsitAuthStringMaxLength];
236 uint8_t ca_tgt_chapsecret[iscsitAuthStringMaxLength];
237 int ca_tgt_chapsecretlen;
238
239 char ca_ini_chapuser[iscsitAuthStringMaxLength];
240 uint8_t ca_ini_chapsecret[iscsitAuthStringMaxLength];
241 int ca_ini_chapsecretlen;
242
243 /* RADIUS authentication information */
244 boolean_t ca_use_radius;
245 struct sockaddr_storage ca_radius_server;
246 uint8_t ca_radius_secret[iscsitAuthStringMaxLength];
247 int ca_radius_secretlen;
248
249 /* authentication method list */
250 iscsit_auth_method_t ca_method_valid_list[iscsitAuthMethodMaxCount];
251
252 /* Target alias */
253 char ca_tgt_alias[MAX_ISCSI_NODENAMELEN];
254 } conn_auth_t;
255
256 /*
257 * We have three state machines (so far) between the IDM connection state
258 * machine, the session state machine, and the login state machine. All
259 * of these states have some concept of "full feature mode". It's going
260 * to be obnoxious if we use a mixture of these "ffp" representations
261 * since it will be difficult to ensure the three state machines
262 * transition at exactly the same time. We should drive decisions that
263 * depend on FFP from the IDM state machine which is actually snooping
264 * the iSCSI PDU's and will always transition at the correct time.
265 *
266 * A consequence of this approach is that there is a window just after
267 * login completes where we may get a SCSI request but the session
268 * or login state machine has not quite transitioned to "FFP". Whether
269 * this is a problem depends on how we use those state machines. This
270 * is what we should use them for:
271 *
272 * IDM Connection state machine - Decisions related to command processing
273 * including whether a connection is in FFP
274 *
275 * Session state machine - Summarize the state of all available connections
276 * for the purposes of ERL1, ERL2 and MC/S. A session in LOGGED_IN state
277 * should always have at least one FFP connection but there may be a brief
278 * window where a session in ACTIVE might have one or more FFP connections
279 * even though ACTIVE is not strictly an FFP state according to the RFC.
280 *
281 * Login state machine -- drive the login process, collect negotiated
282 * parameters. Another side effect of this approach is that we may get
283 * the "notify ffp" callback from the IDM connection state machine before
284 * the login state machine has actually transitioned to FFP state.
285 */
286
287 struct iscsit_conn_s;
288
289 /* Update iscsit_ss_name table whenever session states are modified */
290 typedef enum {
291 SS_UNDEFINED = 0,
292 SS_Q1_FREE,
293 SS_Q2_ACTIVE,
294 SS_Q3_LOGGED_IN,
295 SS_Q4_FAILED,
296 SS_Q5_CONTINUE,
297 SS_Q6_DONE,
298 SS_Q7_ERROR,
299 /* Add new session states above SS_MAX_STATE */
300 SS_MAX_STATE
301 } iscsit_session_state_t;
302
303 #ifdef ISCSIT_SESS_SM_STRINGS
304 /* An array of state text values, for use in logging state transitions */
305 static const char *iscsit_ss_name[SS_MAX_STATE+1] = {
306 "SS_UNDEFINED",
307 "SS_Q1_FREE",
308 "SS_Q2_ACTIVE",
309 "SS_Q3_LOGGED_IN",
310 "SS_Q4_FAILED",
311 "SS_Q5_CONTINUE",
312 "SS_Q6_DONE",
313 "SS_Q7_ERROR",
314 "SS_MAX_STATE"
315 };
316 #endif
317
318 /* Update iscsit_se_name table whenever session events are modified */
319 typedef enum {
320 SE_UNDEFINED = 0,
321 SE_CONN_IN_LOGIN, /* From login state machine */
322 SE_CONN_LOGGED_IN, /* FFP enabled client notification */
323 SE_CONN_FFP_FAIL, /* FFP disabled client notification */
324 SE_CONN_FFP_DISABLE, /* FFP disabled client notification */
325 SE_CONN_FAIL, /* Conn destroy client notification */
326 SE_SESSION_CLOSE, /* FFP disabled client notification */
327 SE_SESSION_REINSTATE, /* From login state machine */
328 SE_SESSION_TIMEOUT, /* Internal */
329 SE_SESSION_CONTINUE, /* From login state machine */
330 SE_SESSION_CONTINUE_FAIL, /* From login state machine? */
331 /* Add new events above SE_MAX_EVENT */
332 SE_MAX_EVENT
333 } iscsit_session_event_t;
334
335 #ifdef ISCSIT_SESS_SM_STRINGS
336 /* An array of event text values, for use in logging events */
337 static const char *iscsit_se_name[SE_MAX_EVENT+1] = {
338 "SE_UNDEFINED",
339 "SE_CONN_IN_LOGIN",
340 "SE_CONN_LOGGED_IN",
341 "SE_CONN_FFP_FAIL",
342 "SE_CONN_FFP_DISABLE",
343 "SE_CONN_FAIL",
344 "SE_SESSION_CLOSE",
345 "SE_SESSION_REINSTATE",
346 "SE_SESSION_TIMEOUT",
347 "SE_SESSION_CONTINUE",
348 "SE_SESSION_CONTINUE_FAIL",
349 "SE_MAX_EVENT"
350 };
351 #endif
352
353 /*
354 * Set in ist_tgt after iscsit_tgt_unbind_sess to differentiate an unbound
355 * session from a discovery session.
356 */
357 #define SESS_UNBOUND_FROM_TGT -1
358
359 typedef struct {
360 stmf_scsi_session_t *ist_stmf_sess;
361 stmf_local_port_t *ist_lport;
362 iscsit_tgt_t *ist_tgt;
363 idm_refcnt_t ist_refcnt;
364 kmem_cache_t *ist_task_cache;
365 kmutex_t ist_sn_mutex;
366 kmutex_t ist_mutex;
367 kcondvar_t ist_cv;
368 iscsit_session_state_t ist_state;
369 iscsit_session_state_t ist_last_state;
370 sm_audit_buf_t ist_state_audit;
371 boolean_t ist_sm_busy;
372 boolean_t ist_sm_complete;
373 boolean_t ist_admin_close;
374 list_t ist_events;
375 int ist_conn_count;
376 int ist_ffp_conn_count;
377 struct iscsit_conn_s *ist_failed_conn;
378 timeout_id_t ist_state_timeout;
379 list_t ist_conn_list;
380 avl_node_t ist_tgt_ln;
381 char *ist_initiator_name;
382 char *ist_initiator_alias;
383 char *ist_target_name;
384 char *ist_target_alias;
385 uint8_t ist_isid[ISCSI_ISID_LEN];
386 uint16_t ist_tsih;
387 uint16_t ist_tpgt_tag;
388 uint32_t ist_expcmdsn;
389 uint32_t ist_maxcmdsn;
390 avl_tree_t ist_task_list;
391 iscsit_cbuf_t *ist_rxpdu_queue;
392 } iscsit_sess_t;
393
394 /* Update iscsit_ils_name table whenever login states are modified */
395 typedef enum {
396 ILS_UNDEFINED = 0,
397 ILS_LOGIN_INIT,
398 ILS_LOGIN_WAITING, /* Waiting for more login PDU's */
399 ILS_LOGIN_PROCESSING, /* Processing login request */
400 ILS_LOGIN_RESPONDING, /* Sending login response */
401 ILS_LOGIN_RESPONDED, /* Sent login response (no trans. to FFP) */
402 ILS_LOGIN_FFP, /* Sending last login PDU for final response */
403 ILS_LOGIN_DONE, /* Last login PDU sent (so we can free it) */
404 ILS_LOGIN_ERROR, /* Login error, login failed */
405 /* Add new login states above ILS_MAX_STATE */
406 ILS_MAX_STATE
407 } iscsit_login_state_t;
408
409 #ifdef ISCSIT_LOGIN_SM_STRINGS
410 /* An array of login state text values, for use in logging login progress */
411 static const char *iscsit_ils_name[ILS_MAX_STATE+1] = {
412 "ILS_UNDEFINED",
413 "ILS_LOGIN_INIT",
414 "ILS_LOGIN_WAITING",
415 "ILS_LOGIN_PROCESSING",
416 "ILS_LOGIN_RESPONDING",
417 "ILS_LOGIN_RESPONDED",
418 "ILS_LOGIN_FFP",
419 "ILS_LOGIN_DONE",
420 "ILS_LOGIN_ERROR",
421 "ILS_MAX_STATE"
422 };
423 #endif
424
425 /* Update iscsit_ile_name table whenever login events are modified */
426 typedef enum {
427 ILE_UNDEFINED = 0,
428 ILE_LOGIN_RCV,
429 ILE_LOGIN_RESP_READY,
430 ILE_LOGIN_FFP,
431 ILE_LOGIN_RESP_COMPLETE,
432 ILE_LOGIN_ERROR,
433 ILE_LOGIN_CONN_ERROR,
434 /* Add new login events above ILE_MAX_EVENT */
435 ILE_MAX_EVENT
436 } iscsit_login_event_t;
437
438 #ifdef ISCSIT_LOGIN_SM_STRINGS
439 /* An array of login event text values, for use in logging login events */
440 static const char *iscsit_ile_name[ILE_MAX_EVENT+1] = {
441 "ILE_UNDEFINED",
442 "ILE_LOGIN_RCV",
443 "ILE_LOGIN_RESP_READY",
444 "ILE_LOGIN_FFP",
445 "ILE_LOGIN_RESP_COMPLETE",
446 "ILE_LOGIN_ERROR",
447 "ILE_LOGIN_CONN_ERROR",
448 "ILE_MAX_EVENT"
449 };
450 #endif
451
452 typedef struct {
453 uint32_t op_initial_params_set:1,
454 op_discovery_session:1,
455 op_initial_r2t:1,
456 op_immed_data:1,
457 op_data_pdu_in_order:1,
458 op_data_sequence_in_order:1,
459 op_declarative_params_set:1;
460 uint64_t op_max_connections;
461 uint64_t op_max_recv_data_segment_length;
462 uint64_t op_max_burst_length;
463 uint64_t op_first_burst_length;
464 uint64_t op_default_time_2_wait;
465 uint64_t op_default_time_2_retain;
466 uint64_t op_max_outstanding_r2t;
467 uint64_t op_error_recovery_level;
468 } iscsit_op_params_t;
469
470 typedef struct {
471 iscsit_login_state_t icl_login_state;
472 iscsit_login_state_t icl_login_last_state;
473 sm_audit_buf_t icl_state_audit;
474 boolean_t icl_busy;
475 boolean_t icl_login_complete;
476 kmutex_t icl_mutex;
477 uint32_t icl_login_itt;
478 uint8_t icl_login_csg;
479 uint8_t icl_login_nsg;
480 boolean_t icl_login_transit;
481 conn_auth_t icl_auth;
482 iscsit_auth_client_t icl_auth_client;
483 int icl_auth_pass;
484 list_t icl_login_events;
485 list_t icl_pdu_list;
486 uint16_t icl_tsih;
487 uint8_t icl_isid[ISCSI_ISID_LEN];
488 uint32_t icl_cmdsn;
489 uint16_t icl_tpgt_tag;
490 char *icl_target_name;
491 char *icl_target_alias;
492 char *icl_initiator_name;
493 char *icl_login_resp_buf;
494 void *icl_login_resp_itb; /* mult-pdu idm buf */
495 int icl_login_resp_len; /* For kmem_free */
496 int icl_login_resp_valid_len;
497 uint8_t icl_login_resp_err_class;
498 uint8_t icl_login_resp_err_detail;
499 iscsi_login_rsp_hdr_t *icl_login_resp_tmpl;
500 nvlist_t *icl_request_nvlist;
501 nvlist_t *icl_response_nvlist;
502 nvlist_t *icl_negotiated_values;
503 } iscsit_conn_login_t;
504
505 #define SET_LOGIN_ERROR(SLE_ICT, SLE_CLASS, SLE_DETAIL) \
506 (SLE_ICT)->ict_login_sm.icl_login_resp_err_class = (SLE_CLASS); \
507 (SLE_ICT)->ict_login_sm.icl_login_resp_err_detail = (SLE_DETAIL);
508
509 typedef struct iscsit_conn_s {
510 idm_conn_t *ict_ic;
511 iscsit_sess_t *ict_sess;
512 kmutex_t ict_mutex;
513 idm_refcnt_t ict_refcnt;
514 idm_refcnt_t ict_dispatch_refcnt;
515 list_node_t ict_sess_ln;
516 iscsit_conn_login_t ict_login_sm;
517 iscsit_op_params_t ict_op;
518 uint16_t ict_cid;
519 uint32_t ict_statsn;
520 kmutex_t ict_statsn_mutex;
521 uint32_t ict_keepalive_ttt;
522 struct iscsit_conn_s *ict_reinstate_conn;
523 uint32_t ict_reinstating:1,
524 ict_lost:1,
525 ict_destroyed:1;
526 /*
527 * Parameters for processing text commands
528 */
529 char *ict_text_rsp_buf;
530 uint32_t ict_text_rsp_len;
531 uint32_t ict_text_rsp_valid_len;
532 uint32_t ict_text_rsp_off;
533 uint32_t ict_text_req_itt; /* from initiator */
534 uint32_t ict_text_rsp_ttt;
535 } iscsit_conn_t;
536
537 #define ICT_FLAGS_DISCOVERY 0x00000001
538
539 typedef struct {
540 idm_buf_t *ibuf_idm_buf;
541 stmf_data_buf_t *ibuf_stmf_buf;
542 idm_pdu_t *ibuf_immed_data_pdu;
543 boolean_t ibuf_is_immed;
544 } iscsit_buf_t;
545
546 typedef struct {
547 scsi_task_t *it_stmf_task;
548 idm_task_t *it_idm_task;
549 iscsit_buf_t *it_immed_data;
550 iscsit_conn_t *it_ict;
551 kmutex_t it_mutex;
552 idm_pdu_t *it_tm_pdu;
553 uint32_t it_stmf_abort:1,
554 it_aborted:1,
555 it_active:1,
556 it_tm_task:1,
557 it_tm_responded:1;
558 uint32_t it_cmdsn;
559 uint32_t it_itt;
560 uint32_t it_ttt;
561 avl_node_t it_sess_ln;
562 } iscsit_task_t;
563
564 typedef struct iscsit_isns_cfg {
565 kmutex_t isns_mutex;
566 boolean_t isns_state;
567 list_t isns_svrs;
568 } iscsit_isns_cfg_t;
569
570 /*
571 * State values for the iscsit service
572 */
573 typedef enum {
574 ISE_UNDEFINED = 0,
575 ISE_DETACHED,
576 ISE_DISABLED,
577 ISE_ENABLING,
578 ISE_ENABLED,
579 ISE_BUSY,
580 ISE_DISABLING
581 } iscsit_service_enabled_t;
582
583
584 typedef struct {
585 iscsit_service_enabled_t global_svc_state;
586 dev_info_t *global_dip;
587 ldi_ident_t global_li;
588 nvlist_t *global_props;
589 stmf_port_provider_t *global_pp;
590 stmf_dbuf_store_t *global_dbuf_store;
591 taskq_t *global_dispatch_taskq;
592 idm_refcnt_t global_refcnt;
593 avl_tree_t global_discovery_sessions;
594 avl_tree_t global_target_list;
595 list_t global_deleted_target_list;
596 avl_tree_t global_tpg_list;
597 avl_tree_t global_ini_list;
598 iscsit_tpg_t *global_default_tpg;
599 vmem_t *global_tsih_pool;
600 iscsit_isns_cfg_t global_isns_cfg;
601 iscsi_radius_props_t global_radius_server;
602 krwlock_t global_rwlock;
603 kmutex_t global_state_mutex;
604 } iscsit_global_t;
605
606 extern iscsit_global_t iscsit_global;
607
608 void
609 iscsit_global_hold();
610
611 void
612 iscsit_global_rele();
613
614 void
615 iscsit_global_wait_ref();
616
617 idm_status_t
618 iscsit_login_sm_init(iscsit_conn_t *ict);
619
620 void
621 iscsit_login_sm_fini(iscsit_conn_t *ict);
622
623 void
624 iscsit_login_sm_event(iscsit_conn_t *ic, iscsit_login_event_t event,
625 idm_pdu_t *pdu);
626
627 void
628 iscsit_login_sm_event_locked(iscsit_conn_t *ic, iscsit_login_event_t event,
629 idm_pdu_t *pdu);
630
631 int
632 iscsit_is_v4_mapped(struct sockaddr_storage *sa, struct sockaddr_storage *v4sa);
633
634 void
635 iscsit_send_async_event(iscsit_conn_t *ict, uint8_t async_event);
636
637 void
638 iscsit_pdu_tx(idm_pdu_t *pdu);
639
640 void
641 iscsit_send_reject(iscsit_conn_t *ict, idm_pdu_t *rejected_pdu, uint8_t reason);
642
643 void
644 iscsit_text_cmd_fini(iscsit_conn_t *ict);
645
646 /*
647 * IDM conn ops
648 */
649
650 idm_rx_pdu_cb_t iscsit_op_scsi_cmd;
651 idm_rx_pdu_cb_t iscsit_rx_pdu;
652 idm_rx_pdu_error_cb_t iscsit_rx_pdu_error;
653 idm_rx_pdu_cb_t iscsit_rx_scsi_rsp;
654 idm_task_cb_t iscsit_task_aborted;
655 idm_client_notify_cb_t iscsit_client_notify;
656 idm_build_hdr_cb_t iscsit_build_hdr;
657 idm_update_statsn_cb_t iscsit_update_statsn;
658 idm_keepalive_cb_t iscsit_keepalive;
659
660 /*
661 * lport entry points
662 */
663 stmf_status_t
664 iscsit_xfer_scsi_data(scsi_task_t *task, stmf_data_buf_t *dbuf,
665 uint32_t ioflags);
666
667 stmf_status_t
668 iscsit_send_scsi_status(scsi_task_t *task, uint32_t ioflags);
669
670 void
671 iscsit_lport_task_free(scsi_task_t *task);
672
673 stmf_status_t
674 iscsit_abort(stmf_local_port_t *lport, int abort_cmd, void *arg,
675 uint32_t flags);
676
677 void
678 iscsit_ctl(stmf_local_port_t *lport, int cmd, void *arg);
679
680 /*
681 * Connection functions
682 */
683 idm_status_t
684 iscsit_conn_reinstate(iscsit_conn_t *existing_ict, iscsit_conn_t *ict);
685
686 void
687 iscsit_conn_destroy_done(iscsit_conn_t *ict);
688
689 void
690 iscsit_conn_set_auth(iscsit_conn_t *ict);
691
692 void
693 iscsit_conn_hold(iscsit_conn_t *ict);
694
695 void
696 iscsit_conn_rele(iscsit_conn_t *ict);
697
698 void
699 iscsit_conn_logout(iscsit_conn_t *ict);
700
701 /*
702 * Session functions
703 */
704 int
705 iscsit_sess_avl_compare(const void *void_sess1, const void *void_sess2);
706
707 iscsit_sess_t *
708 iscsit_sess_create(iscsit_tgt_t *tgt, iscsit_conn_t *ict,
709 uint32_t cmdsn, uint8_t *isid, uint16_t tag,
710 char *initiator_name, char *target_name,
711 uint8_t *error_class, uint8_t *error_detail);
712
713 void
714 iscsit_sess_destroy(iscsit_sess_t *ist);
715
716 void
717 iscsit_sess_hold(iscsit_sess_t *ist);
718
719 idm_status_t
720 iscsit_sess_check_hold(iscsit_sess_t *ist);
721
722 void
723 iscsit_sess_rele(iscsit_sess_t *ist);
724
725 iscsit_conn_t *
726 iscsit_sess_lookup_conn(iscsit_sess_t *ist, uint16_t cid);
727
728 void
729 iscsit_sess_bind_conn(iscsit_sess_t *ist, iscsit_conn_t *ict);
730
731 void
732 iscsit_sess_unbind_conn(iscsit_sess_t *ist, iscsit_conn_t *ict);
733
734 void
735 iscsit_sess_close(iscsit_sess_t *ist);
736
737 iscsit_sess_t *
738 iscsit_sess_reinstate(iscsit_tgt_t *tgt, iscsit_sess_t *ist, iscsit_conn_t *ict,
739 uint8_t *error_class, uint8_t *error_detail);
740
741 void
742 iscsit_sess_sm_event(iscsit_sess_t *ist, iscsit_session_event_t event,
743 iscsit_conn_t *ict);
744
745 /*
746 * Target, TPGT, TPGT and portal functions
747 */
748
749 void
750 iscsit_tgt_sm_event(iscsit_tgt_t *tgt, iscsit_tgt_event_t event);
751
752 void
753 tgt_sm_event_locked(iscsit_tgt_t *tgt, iscsit_tgt_event_t event);
754
755 it_cfg_status_t
756 iscsit_config_merge_tgt(it_config_t *cfg);
757
758 void
759 iscsit_config_destroy_tgts(list_t *tgt_del_list);
760
761 void
762 iscsit_config_destroy_tpgts(list_t *tpgt_del_list);
763
764 iscsit_tgt_t *
765 iscsit_tgt_lookup(char *target_name);
766
767 iscsit_tgt_t *
768 iscsit_tgt_lookup_locked(char *target_name);
769
770 int
771 iscsit_tgt_avl_compare(const void *void_tgt1, const void *void_tgt2);
772
773 int
774 iscsit_tpgt_avl_compare(const void *void_tpgt1, const void *void_tpgt2);
775
776 void
777 iscsit_tgt_hold(iscsit_tgt_t *tgt);
778
779 void
780 iscsit_tgt_rele(iscsit_tgt_t *tgt);
781
782 iscsit_tpgt_t *
783 iscsit_tgt_lookup_tpgt(iscsit_tgt_t *tgt, uint16_t tag);
784
785 void
786 iscsit_tpgt_hold(iscsit_tpgt_t *tpgt);
787
788 void
789 iscsit_tpgt_rele(iscsit_tpgt_t *tpgt);
790
791 iscsit_portal_t *
792 iscsit_tgt_lookup_portal(iscsit_tgt_t *tgt, struct sockaddr_storage *sa,
793 iscsit_tpgt_t **output_tpgt);
794
795 iscsit_sess_t *
796 iscsit_tgt_lookup_sess(iscsit_tgt_t *tgt, char *initiator_name,
797 uint8_t *isid, uint16_t tsih, uint16_t tag);
798
799 void
800 iscsit_tgt_bind_sess(iscsit_tgt_t *tgt, iscsit_sess_t *sess);
801
802 void
803 iscsit_tgt_unbind_sess(iscsit_tgt_t *tgt, iscsit_sess_t *sess);
804
805 it_cfg_status_t
806 iscsit_config_merge_tpg(it_config_t *cfg, list_t *tpg_del_list);
807
808 void
809 iscsit_config_destroy_tpgs(list_t *tpg_del_list);
810
811 iscsit_tpg_t *
812 iscsit_tpg_lookup(char *tpg_name);
813
814 int
815 iscsit_tpg_avl_compare(const void *void_tpg1, const void *void_tpg2);
816
817 void
818 iscsit_tpg_hold(iscsit_tpg_t *tpg);
819
820 void
821 iscsit_tpg_rele(iscsit_tpg_t *tpg);
822
823 iscsit_tpg_t *
824 iscsit_tpg_createdefault();
825
826 void
827 iscsit_tpg_destroydefault(iscsit_tpg_t *tpg);
828
829 idm_status_t
830 iscsit_tpg_online(iscsit_tpg_t *tpg);
831
832 void
833 iscsit_tpg_offline(iscsit_tpg_t *tpg);
834
835 iscsit_portal_t *
836 iscsit_tpg_portal_lookup(iscsit_tpg_t *tpg, struct sockaddr_storage *sa);
837
838 void
839 iscsit_portal_hold(iscsit_portal_t *portal);
840
841 void
842 iscsit_portal_rele(iscsit_portal_t *portal);
843
844 it_cfg_status_t
845 iscsit_config_merge_ini(it_config_t *cfg);
846
847 int
848 iscsit_ini_avl_compare(const void *void_ini1, const void *void_ini2);
849
850 iscsit_ini_t *
851 iscsit_ini_lookup_locked(char *ini_name);
852
853 int
854 iscsit_portal_avl_compare(const void *void_portal1, const void *void_portal2);
855
856 int
857 iscsit_verify_chap_resp(iscsit_conn_login_t *lsm,
858 unsigned int chap_i, uchar_t *chap_c, unsigned int challenge_len,
859 uchar_t *chap_r, unsigned int resp_len);
860
861 void
862 iscsit_rxpdu_queue_monitor_start(void);
863
864 void
865 iscsit_rxpdu_queue_monitor_stop(void);
866
867 #endif /* _ISCSIT_H_ */