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 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #include <sys/cpuvar.h> 27 #include <sys/types.h> 28 #include <sys/conf.h> 29 #include <sys/file.h> 30 #include <sys/ddi.h> 31 #include <sys/sunddi.h> 32 #include <sys/modctl.h> 33 #include <sys/sysmacros.h> 34 #include <sys/sdt.h> 35 36 #include <sys/socket.h> 37 #include <sys/strsubr.h> 38 39 #include <sys/stmf.h> 40 #include <sys/stmf_ioctl.h> 41 #include <sys/portif.h> 42 #include <sys/idm/idm.h> 43 44 #define ISCSIT_TGT_SM_STRINGS 45 #include <iscsit.h> 46 #include <iscsit_isns.h> 47 48 typedef struct { 49 list_node_t te_ctx_node; 50 iscsit_tgt_event_t te_ctx_event; 51 } tgt_event_ctx_t; 52 53 static void 54 tgt_sm_event_dispatch(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx); 55 56 static void 57 tgt_sm_created(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx); 58 59 static void 60 tgt_sm_onlining(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx); 61 62 static void 63 tgt_sm_online(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx); 64 65 static void 66 tgt_sm_stmf_online(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx); 67 68 static void 69 tgt_sm_deleting_need_offline(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx); 70 71 static void 72 tgt_sm_offlining(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx); 73 74 static void 75 tgt_sm_offline(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx); 76 77 static void 78 tgt_sm_stmf_offline(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx); 79 80 static void 81 tgt_sm_deleting_stmf_dereg(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx); 82 83 static void 84 tgt_sm_deleting_stmf_dereg_fail(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx); 85 86 static void 87 tgt_sm_deleting(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx); 88 89 static void 90 iscsit_tgt_dereg_retry(void *arg); 91 92 static void 93 iscsit_tgt_dereg_task(void *arg); 94 95 static void 96 tgt_sm_new_state(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx, 97 iscsit_tgt_state_t new_state); 98 99 100 static iscsit_tgt_t * 101 iscsit_tgt_create(it_tgt_t *cfg_tgt); 102 103 static void 104 iscsit_tgt_unref(void *tgt); 105 106 static void 107 iscsit_tgt_async_wait_ref(iscsit_tgt_t *tgt, idm_refcnt_cb_t *cb_func); 108 109 static void 110 iscsit_tgt_destroy(iscsit_tgt_t *tgt); 111 112 static iscsit_tpgt_t * 113 iscsit_tgt_lookup_tpgt_locked(iscsit_tgt_t *tgt, uint16_t tag); 114 115 static iscsit_tpg_t * 116 iscsit_tpg_lookup_locked(char *tpg_name); 117 118 static iscsit_portal_t * 119 iscsit_tpg_portal_lookup_locked(iscsit_tpg_t *tpg, 120 struct sockaddr_storage *sa); 121 122 static idm_status_t 123 iscsit_tgt_online(iscsit_tgt_t *tgt); 124 125 static void 126 iscsit_tgt_offline(iscsit_tgt_t *tgt); 127 128 static idm_status_t 129 iscsit_tgt_modify(iscsit_tgt_t *tgt, it_tgt_t *cfg_tgt); 130 131 static idm_status_t 132 iscsit_tgt_merge_tpgt(iscsit_tgt_t *tgt, it_tgt_t *cfg_tgt, 133 list_t *tpgt_del_list); 134 135 static iscsit_tpgt_t * 136 iscsit_tpgt_create(it_tpgt_t *cfg_tpgt); 137 138 static iscsit_tpgt_t * 139 iscsit_tpgt_create_default(); 140 141 static void 142 iscsit_tpgt_destroy(iscsit_tpgt_t *tpgt); 143 144 static iscsit_tpg_t * 145 iscsit_tpg_create(it_tpg_t *tpg); 146 147 static void 148 iscsit_tpg_modify(iscsit_tpg_t *tpg, it_tpg_t *cfg_tpg); 149 150 static void 151 iscsit_tpg_destroy(iscsit_tpg_t *tpg); 152 153 static iscsit_portal_t * 154 iscsit_portal_create(iscsit_tpg_t *tpg, struct sockaddr_storage *sa); 155 156 static void 157 iscsit_portal_destroy(iscsit_portal_t *portal); 158 159 static idm_status_t 160 iscsit_portal_online(iscsit_portal_t *portal); 161 162 static void 163 iscsit_portal_offline(iscsit_portal_t *portal); 164 165 166 167 /* 168 * Target state machine 169 */ 170 171 void 172 iscsit_tgt_sm_event(iscsit_tgt_t *tgt, iscsit_tgt_event_t event) 173 { 174 mutex_enter(&tgt->target_mutex); 175 tgt_sm_event_locked(tgt, event); 176 mutex_exit(&tgt->target_mutex); 177 } 178 179 void 180 tgt_sm_event_locked(iscsit_tgt_t *tgt, iscsit_tgt_event_t event) 181 { 182 tgt_event_ctx_t *ctx; 183 184 iscsit_tgt_hold(tgt); 185 186 ctx = kmem_zalloc(sizeof (*ctx), KM_SLEEP); 187 188 ctx->te_ctx_event = event; 189 190 list_insert_tail(&tgt->target_events, ctx); 191 /* 192 * Use the icl_busy flag to keep the state machine single threaded. 193 * This also serves as recursion avoidance since this flag will 194 * always be set if we call iscsit_tgt_sm_event from within the 195 * state machine code. 196 */ 197 if (!tgt->target_sm_busy) { 198 tgt->target_sm_busy = B_TRUE; 199 while (!list_is_empty(&tgt->target_events)) { 200 ctx = list_head(&tgt->target_events); 201 list_remove(&tgt->target_events, ctx); 202 idm_sm_audit_event(&tgt->target_state_audit, 203 SAS_ISCSIT_TGT, (int)tgt->target_state, 204 (int)ctx->te_ctx_event, 0); 205 mutex_exit(&tgt->target_mutex); 206 tgt_sm_event_dispatch(tgt, ctx); 207 mutex_enter(&tgt->target_mutex); 208 } 209 tgt->target_sm_busy = B_FALSE; 210 211 } 212 213 iscsit_tgt_rele(tgt); 214 } 215 216 static void 217 tgt_sm_event_dispatch(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx) 218 { 219 DTRACE_PROBE2(tgt__event, iscsit_tgt_t *, tgt, 220 tgt_event_ctx_t *, ctx); 221 222 IDM_SM_LOG(CE_NOTE, "tgt_sm_event_dispatch: tgt %p event %s(%d)", 223 (void *)tgt, iscsit_te_name[ctx->te_ctx_event], ctx->te_ctx_event); 224 225 /* State independent actions */ 226 switch (ctx->te_ctx_event) { 227 case TE_DELETE: 228 tgt->target_deleting = B_TRUE; 229 break; 230 } 231 232 /* State dependent actions */ 233 switch (tgt->target_state) { 234 case TS_CREATED: 235 tgt_sm_created(tgt, ctx); 236 break; 237 case TS_ONLINING: 238 tgt_sm_onlining(tgt, ctx); 239 break; 240 case TS_ONLINE: 241 tgt_sm_online(tgt, ctx); 242 break; 243 case TS_STMF_ONLINE: 244 tgt_sm_stmf_online(tgt, ctx); 245 break; 246 case TS_DELETING_NEED_OFFLINE: 247 tgt_sm_deleting_need_offline(tgt, ctx); 248 break; 249 case TS_OFFLINING: 250 tgt_sm_offlining(tgt, ctx); 251 break; 252 case TS_OFFLINE: 253 tgt_sm_offline(tgt, ctx); 254 break; 255 case TS_STMF_OFFLINE: 256 tgt_sm_stmf_offline(tgt, ctx); 257 break; 258 case TS_DELETING_STMF_DEREG: 259 tgt_sm_deleting_stmf_dereg(tgt, ctx); 260 break; 261 case TS_DELETING_STMF_DEREG_FAIL: 262 tgt_sm_deleting_stmf_dereg_fail(tgt, ctx); 263 break; 264 case TS_DELETING: 265 tgt_sm_deleting(tgt, ctx); 266 break; 267 default: 268 ASSERT(0); 269 } 270 271 kmem_free(ctx, sizeof (*ctx)); 272 } 273 274 static void 275 tgt_sm_created(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx) 276 { 277 stmf_change_status_t scs; 278 279 switch (ctx->te_ctx_event) { 280 case TE_STMF_ONLINE_REQ: 281 tgt_sm_new_state(tgt, ctx, TS_ONLINING); 282 break; 283 case TE_DELETE: 284 tgt_sm_new_state(tgt, ctx, TS_DELETING_STMF_DEREG); 285 break; 286 case TE_STMF_OFFLINE_REQ: 287 /* 288 * We're already offline but update to an equivelant 289 * state just to note that STMF talked to us. 290 */ 291 scs.st_completion_status = STMF_SUCCESS; 292 scs.st_additional_info = NULL; 293 tgt_sm_new_state(tgt, ctx, TS_OFFLINE); 294 (void) stmf_ctl(STMF_CMD_LPORT_OFFLINE_COMPLETE, 295 tgt->target_stmf_lport, &scs); 296 break; 297 case TE_STMF_ONLINE_COMPLETE_ACK: 298 case TE_STMF_OFFLINE_COMPLETE_ACK: 299 /* Ignore */ 300 break; 301 default: 302 ASSERT(0); 303 } 304 } 305 306 static void 307 tgt_sm_onlining(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx) 308 { 309 stmf_change_status_t scs; 310 311 switch (ctx->te_ctx_event) { 312 case TE_ONLINE_SUCCESS: 313 tgt_sm_new_state(tgt, ctx, TS_ONLINE); 314 break; 315 case TE_ONLINE_FAIL: 316 tgt_sm_new_state(tgt, ctx, TS_STMF_OFFLINE); 317 break; 318 case TE_DELETE: 319 /* TE_DELETE is handled in tgt_sm_event_dispatch() */ 320 break; 321 case TE_STMF_ONLINE_REQ: 322 case TE_STMF_OFFLINE_REQ: 323 /* 324 * We can't complete STMF's request since we are busy going 325 * online. 326 */ 327 scs.st_completion_status = STMF_INVALID_ARG; 328 scs.st_additional_info = NULL; 329 (void) stmf_ctl((ctx->te_ctx_event == TE_STMF_ONLINE_REQ) ? 330 STMF_CMD_LPORT_ONLINE_COMPLETE : 331 STMF_CMD_LPORT_OFFLINE_COMPLETE, 332 tgt->target_stmf_lport, &scs); 333 break; 334 case TE_STMF_ONLINE_COMPLETE_ACK: 335 case TE_STMF_OFFLINE_COMPLETE_ACK: 336 /* Ignore */ 337 break; 338 default: 339 ASSERT(0); 340 } 341 } 342 343 static void 344 tgt_sm_online(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx) 345 { 346 stmf_change_status_t scs; 347 348 switch (ctx->te_ctx_event) { 349 case TE_STMF_ONLINE_COMPLETE_ACK: 350 if (tgt->target_deleting) { 351 tgt_sm_new_state(tgt, ctx, TS_DELETING_NEED_OFFLINE); 352 } else { 353 tgt_sm_new_state(tgt, ctx, TS_STMF_ONLINE); 354 } 355 break; 356 case TE_DELETE: 357 /* TE_DELETE is handled in tgt_sm_event_dispatch() */ 358 break; 359 case TE_STMF_ONLINE_REQ: 360 case TE_STMF_OFFLINE_REQ: 361 /* 362 * We can't complete STMF's request since we are busy going 363 * online (waiting for acknowlegement from STMF) 364 */ 365 scs.st_completion_status = STMF_INVALID_ARG; 366 scs.st_additional_info = NULL; 367 (void) stmf_ctl((ctx->te_ctx_event == TE_STMF_ONLINE_REQ) ? 368 STMF_CMD_LPORT_ONLINE_COMPLETE : 369 STMF_CMD_LPORT_OFFLINE_COMPLETE, 370 tgt->target_stmf_lport, &scs); 371 break; 372 case TE_STMF_OFFLINE_COMPLETE_ACK: 373 /* Ignore */ 374 break; 375 default: 376 ASSERT(0); 377 } 378 } 379 380 381 static void 382 tgt_sm_stmf_online(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx) 383 { 384 stmf_change_status_t scs; 385 386 /* Deregister target with iSNS whenever we leave this state */ 387 388 switch (ctx->te_ctx_event) { 389 case TE_DELETE: 390 (void) iscsit_isns_deregister(tgt); 391 tgt_sm_new_state(tgt, ctx, TS_DELETING_NEED_OFFLINE); 392 break; 393 case TE_STMF_OFFLINE_REQ: 394 (void) iscsit_isns_deregister(tgt); 395 tgt_sm_new_state(tgt, ctx, TS_OFFLINING); 396 break; 397 case TE_STMF_ONLINE_REQ: 398 /* Already online */ 399 scs.st_completion_status = STMF_ALREADY; 400 scs.st_additional_info = NULL; 401 (void) stmf_ctl(STMF_CMD_LPORT_ONLINE_COMPLETE, 402 tgt->target_stmf_lport, &scs); 403 break; 404 case TE_STMF_ONLINE_COMPLETE_ACK: 405 case TE_STMF_OFFLINE_COMPLETE_ACK: 406 /* Ignore */ 407 break; 408 default: 409 ASSERT(0); 410 } 411 } 412 413 414 static void 415 tgt_sm_deleting_need_offline(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx) 416 { 417 stmf_change_status_t scs; 418 419 switch (ctx->te_ctx_event) { 420 case TE_STMF_OFFLINE_REQ: 421 tgt_sm_new_state(tgt, ctx, TS_OFFLINING); 422 break; 423 case TE_DELETE: 424 /* TE_DELETE is handled in tgt_sm_event_dispatch() */ 425 break; 426 case TE_STMF_ONLINE_REQ: 427 /* 428 * We can't complete STMF's request since we need to be offlined 429 */ 430 scs.st_completion_status = STMF_INVALID_ARG; 431 scs.st_additional_info = NULL; 432 (void) stmf_ctl(STMF_CMD_LPORT_ONLINE_COMPLETE, 433 tgt->target_stmf_lport, &scs); 434 break; 435 case TE_STMF_ONLINE_COMPLETE_ACK: 436 case TE_STMF_OFFLINE_COMPLETE_ACK: 437 /* Ignore */ 438 break; 439 default: 440 ASSERT(0); 441 } 442 } 443 444 445 static void 446 tgt_sm_offlining(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx) 447 { 448 stmf_change_status_t scs; 449 450 switch (ctx->te_ctx_event) { 451 case TE_OFFLINE_COMPLETE: 452 tgt_sm_new_state(tgt, ctx, TS_OFFLINE); 453 break; 454 case TE_DELETE: 455 /* TE_DELETE is handled in tgt_sm_event_dispatch() */ 456 break; 457 case TE_STMF_ONLINE_REQ: 458 case TE_STMF_OFFLINE_REQ: 459 /* 460 * We can't complete STMF's request since we are busy going 461 * offline. 462 */ 463 scs.st_completion_status = STMF_INVALID_ARG; 464 scs.st_additional_info = NULL; 465 (void) stmf_ctl((ctx->te_ctx_event == TE_STMF_ONLINE_REQ) ? 466 STMF_CMD_LPORT_ONLINE_COMPLETE : 467 STMF_CMD_LPORT_OFFLINE_COMPLETE, 468 tgt->target_stmf_lport, &scs); 469 break; 470 case TE_STMF_ONLINE_COMPLETE_ACK: 471 case TE_STMF_OFFLINE_COMPLETE_ACK: 472 /* Ignore */ 473 break; 474 default: 475 ASSERT(0); 476 } 477 } 478 479 480 static void 481 tgt_sm_offline(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx) 482 { 483 stmf_change_status_t scs; 484 485 switch (ctx->te_ctx_event) { 486 case TE_STMF_OFFLINE_COMPLETE_ACK: 487 if (tgt->target_deleting) { 488 tgt_sm_new_state(tgt, ctx, TS_DELETING_STMF_DEREG); 489 } else { 490 tgt_sm_new_state(tgt, ctx, TS_STMF_OFFLINE); 491 } 492 break; 493 case TE_DELETE: 494 /* TE_DELETE is handled in tgt_sm_event_dispatch() */ 495 break; 496 case TE_STMF_ONLINE_REQ: 497 case TE_STMF_OFFLINE_REQ: 498 /* 499 * We can't complete STMF's request since we are busy going 500 * offline. 501 */ 502 scs.st_completion_status = STMF_INVALID_ARG; 503 scs.st_additional_info = NULL; 504 (void) stmf_ctl((ctx->te_ctx_event == TE_STMF_ONLINE_REQ) ? 505 STMF_CMD_LPORT_ONLINE_COMPLETE : 506 STMF_CMD_LPORT_OFFLINE_COMPLETE, 507 tgt->target_stmf_lport, &scs); 508 break; 509 case TE_STMF_ONLINE_COMPLETE_ACK: 510 /* Ignore */ 511 break; 512 default: 513 ASSERT(0); 514 } 515 } 516 517 518 static void 519 tgt_sm_stmf_offline(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx) 520 { 521 stmf_change_status_t scs; 522 523 switch (ctx->te_ctx_event) { 524 case TE_STMF_ONLINE_REQ: 525 tgt_sm_new_state(tgt, ctx, TS_ONLINING); 526 break; 527 case TE_DELETE: 528 tgt_sm_new_state(tgt, ctx, TS_DELETING_STMF_DEREG); 529 break; 530 case TE_STMF_OFFLINE_REQ: 531 /* Already offline */ 532 scs.st_completion_status = STMF_ALREADY; 533 scs.st_additional_info = NULL; 534 (void) stmf_ctl(STMF_CMD_LPORT_OFFLINE_COMPLETE, 535 tgt->target_stmf_lport, &scs); 536 break; 537 case TE_STMF_ONLINE_COMPLETE_ACK: 538 case TE_STMF_OFFLINE_COMPLETE_ACK: 539 /* Ignore */ 540 break; 541 default: 542 ASSERT(0); 543 } 544 } 545 546 547 static void 548 tgt_sm_deleting_stmf_dereg(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx) 549 { 550 stmf_change_status_t scs; 551 552 /* Terminal state, no events */ 553 switch (ctx->te_ctx_event) { 554 case TE_STMF_ONLINE_REQ: 555 case TE_STMF_OFFLINE_REQ: 556 /* 557 * We can't complete STMF's request since we are being deleted 558 */ 559 scs.st_completion_status = STMF_INVALID_ARG; 560 scs.st_additional_info = NULL; 561 (void) stmf_ctl((ctx->te_ctx_event == TE_STMF_ONLINE_REQ) ? 562 STMF_CMD_LPORT_ONLINE_COMPLETE : 563 STMF_CMD_LPORT_OFFLINE_COMPLETE, 564 tgt->target_stmf_lport, &scs); 565 break; 566 case TE_STMF_ONLINE_COMPLETE_ACK: 567 case TE_STMF_OFFLINE_COMPLETE_ACK: 568 /* Ignore */ 569 break; 570 case TE_STMF_DEREG_SUCCESS: 571 tgt_sm_new_state(tgt, ctx, TS_DELETING); 572 break; 573 case TE_STMF_DEREG_FAIL: 574 tgt_sm_new_state(tgt, ctx, TS_DELETING_STMF_DEREG_FAIL); 575 break; 576 default: 577 ASSERT(0); 578 } 579 } 580 581 static void 582 tgt_sm_deleting_stmf_dereg_fail(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx) 583 { 584 stmf_change_status_t scs; 585 586 /* Terminal state, no events */ 587 switch (ctx->te_ctx_event) { 588 case TE_STMF_ONLINE_REQ: 589 case TE_STMF_OFFLINE_REQ: 590 /* 591 * We can't complete STMF's request since we are being deleted 592 */ 593 scs.st_completion_status = STMF_INVALID_ARG; 594 scs.st_additional_info = NULL; 595 (void) stmf_ctl((ctx->te_ctx_event == TE_STMF_ONLINE_REQ) ? 596 STMF_CMD_LPORT_ONLINE_COMPLETE : 597 STMF_CMD_LPORT_OFFLINE_COMPLETE, 598 tgt->target_stmf_lport, &scs); 599 break; 600 case TE_STMF_ONLINE_COMPLETE_ACK: 601 case TE_STMF_OFFLINE_COMPLETE_ACK: 602 /* Ignore */ 603 break; 604 case TE_STMF_DEREG_RETRY: 605 tgt_sm_new_state(tgt, ctx, TS_DELETING_STMF_DEREG); 606 break; 607 default: 608 ASSERT(0); 609 } 610 } 611 612 static void 613 tgt_sm_deleting(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx) 614 { 615 stmf_change_status_t scs; 616 617 /* Terminal state, no events */ 618 switch (ctx->te_ctx_event) { 619 case TE_STMF_ONLINE_REQ: 620 case TE_STMF_OFFLINE_REQ: 621 /* 622 * We can't complete STMF's request since we are being deleted 623 */ 624 scs.st_completion_status = STMF_INVALID_ARG; 625 scs.st_additional_info = NULL; 626 (void) stmf_ctl((ctx->te_ctx_event == TE_STMF_ONLINE_REQ) ? 627 STMF_CMD_LPORT_ONLINE_COMPLETE : 628 STMF_CMD_LPORT_OFFLINE_COMPLETE, 629 tgt->target_stmf_lport, &scs); 630 break; 631 case TE_STMF_ONLINE_COMPLETE_ACK: 632 case TE_STMF_OFFLINE_COMPLETE_ACK: 633 /* Ignore */ 634 break; 635 default: 636 ASSERT(0); 637 } 638 } 639 640 641 static void 642 iscsit_tgt_dereg_retry(void *arg) 643 { 644 iscsit_tgt_t *tgt = arg; 645 646 /* 647 * Rather than guaranteeing the target state machine code will not 648 * block for long periods of time (tying up this callout thread) 649 * we will queue a task on the taskq to send the retry event. 650 * If it fails we'll setup another timeout and try again later. 651 */ 652 if (taskq_dispatch(iscsit_global.global_dispatch_taskq, 653 iscsit_tgt_dereg_task, tgt, DDI_NOSLEEP) == NULL) { 654 /* Dispatch failed, try again later */ 655 (void) timeout(iscsit_tgt_dereg_retry, tgt, 656 drv_usectohz(TGT_DEREG_RETRY_SECONDS * 1000000)); 657 } 658 } 659 660 static void 661 iscsit_tgt_dereg_task(void *arg) 662 { 663 iscsit_tgt_t *tgt = arg; 664 665 iscsit_tgt_sm_event(tgt, TE_STMF_DEREG_RETRY); 666 } 667 668 static void 669 tgt_sm_new_state(iscsit_tgt_t *tgt, tgt_event_ctx_t *ctx, 670 iscsit_tgt_state_t new_state) 671 { 672 stmf_local_port_t *lport = tgt->target_stmf_lport; 673 stmf_change_status_t scs; 674 stmf_state_change_info_t sci; 675 idm_status_t idmrc; 676 stmf_status_t stmfrc; 677 678 scs.st_completion_status = STMF_SUCCESS; 679 scs.st_additional_info = NULL; 680 681 /* 682 * Validate new state 683 */ 684 ASSERT(new_state != TS_UNDEFINED); 685 ASSERT3U(new_state, <, TS_MAX_STATE); 686 687 new_state = (new_state < TS_MAX_STATE) ? 688 new_state : TS_UNDEFINED; 689 690 IDM_SM_LOG(CE_NOTE, "tgt_sm_new_state: tgt %p, %s(%d) --> %s(%d)\n", 691 (void *) tgt, iscsit_ts_name[tgt->target_state], tgt->target_state, 692 iscsit_ts_name[new_state], new_state); 693 DTRACE_PROBE3(target__state__change, 694 iscsit_tgt_t *, tgt, tgt_event_ctx_t *, ctx, 695 iscsit_tgt_state_t, new_state); 696 697 mutex_enter(&tgt->target_mutex); 698 idm_sm_audit_state_change(&tgt->target_state_audit, SAS_ISCSIT_TGT, 699 (int)tgt->target_state, (int)new_state); 700 tgt->target_last_state = tgt->target_state; 701 tgt->target_state = new_state; 702 mutex_exit(&tgt->target_mutex); 703 704 switch (tgt->target_state) { 705 case TS_ONLINING: 706 idmrc = iscsit_tgt_online(tgt); 707 if (idmrc != IDM_STATUS_SUCCESS) { 708 scs.st_completion_status = STMF_TARGET_FAILURE; 709 iscsit_tgt_sm_event(tgt, TE_ONLINE_FAIL); 710 } else { 711 iscsit_tgt_sm_event(tgt, TE_ONLINE_SUCCESS); 712 } 713 /* 714 * Let STMF know the how the online operation completed. 715 * STMF will respond with an acknowlege later 716 */ 717 (void) stmf_ctl(STMF_CMD_LPORT_ONLINE_COMPLETE, lport, &scs); 718 break; 719 case TS_ONLINE: 720 break; 721 case TS_STMF_ONLINE: 722 (void) iscsit_isns_register(tgt); 723 break; 724 case TS_DELETING_NEED_OFFLINE: 725 sci.st_rflags = STMF_RFLAG_STAY_OFFLINED; 726 sci.st_additional_info = "Offline for delete"; 727 (void) stmf_ctl(STMF_CMD_LPORT_OFFLINE, lport, &sci); 728 break; 729 case TS_OFFLINING: 730 /* Async callback generates completion event */ 731 iscsit_tgt_offline(tgt); 732 break; 733 case TS_OFFLINE: 734 break; 735 case TS_STMF_OFFLINE: 736 break; 737 case TS_DELETING_STMF_DEREG: 738 stmfrc = stmf_deregister_local_port(tgt->target_stmf_lport); 739 if (stmfrc == STMF_SUCCESS) { 740 iscsit_tgt_sm_event(tgt, TE_STMF_DEREG_SUCCESS); 741 } else { 742 iscsit_tgt_sm_event(tgt, TE_STMF_DEREG_FAIL); 743 } 744 break; 745 case TS_DELETING_STMF_DEREG_FAIL: 746 /* Retry dereg in 1 second */ 747 (void) timeout(iscsit_tgt_dereg_retry, tgt, 748 drv_usectohz(TGT_DEREG_RETRY_SECONDS * 1000000)); 749 break; 750 case TS_DELETING: 751 iscsit_tgt_async_wait_ref(tgt, iscsit_tgt_unref); 752 break; 753 default: 754 ASSERT(0); 755 } 756 } 757 758 759 /* 760 * Target, TPGT, TPG utility functions 761 */ 762 763 it_cfg_status_t 764 iscsit_config_merge_tgt(it_config_t *cfg) 765 { 766 it_tgt_t *cfg_tgt; 767 iscsit_tgt_t *tgt, *next_tgt; 768 769 770 /* 771 * 1. >> Lock << 772 * 2. Removing deleted objects 773 * 3. Add deleted targets to global delete list 774 * 4. "delete" event to target state machine 775 * 5. >> Unlock << 776 * 6. Create new targets, update modified targets 777 */ 778 for (tgt = avl_first(&iscsit_global.global_target_list); 779 tgt != NULL; 780 tgt = next_tgt) { 781 next_tgt = AVL_NEXT(&iscsit_global.global_target_list, tgt); 782 783 if (it_tgt_lookup(cfg, tgt->target_name) == NULL) { 784 avl_remove(&iscsit_global.global_target_list, tgt); 785 list_insert_tail( 786 &iscsit_global.global_deleted_target_list, tgt); 787 iscsit_tgt_sm_event(tgt, TE_DELETE); 788 } 789 } 790 791 /* Now walk through the list of configured targets */ 792 for (cfg_tgt = cfg->config_tgt_list; 793 cfg_tgt != NULL; 794 cfg_tgt = cfg_tgt->tgt_next) { 795 /* See if we have an existing target */ 796 tgt = iscsit_tgt_lookup_locked(cfg_tgt->tgt_name); 797 798 if (tgt == NULL) { 799 tgt = iscsit_tgt_create(cfg_tgt); 800 if (tgt == NULL) 801 return (ITCFG_TGT_CREATE_ERR); 802 avl_add(&iscsit_global.global_target_list, tgt); 803 } else { 804 (void) iscsit_tgt_modify(tgt, cfg_tgt); 805 iscsit_tgt_rele(tgt); 806 } 807 } 808 809 /* 810 * Targets on the iscsit_global.global_deleted_target_list will remove 811 * and destroy themselves when their associated state machines reach 812 * the TS_DELETED state and all references are released. 813 */ 814 return (ITCFG_SUCCESS); 815 } 816 817 iscsit_tgt_t * 818 iscsit_tgt_lookup(char *target_name) 819 { 820 iscsit_tgt_t *result; 821 822 ISCSIT_GLOBAL_LOCK(RW_READER); 823 result = iscsit_tgt_lookup_locked(target_name); 824 ISCSIT_GLOBAL_UNLOCK(); 825 826 return (result); 827 } 828 829 iscsit_tgt_t * 830 iscsit_tgt_lookup_locked(char *target_name) 831 { 832 iscsit_tgt_t tmp_tgt; 833 iscsit_tgt_t *result; 834 835 /* 836 * Use a dummy target for lookup, filling in all fields used in AVL 837 * comparison. 838 */ 839 tmp_tgt.target_name = target_name; 840 if ((result = avl_find(&iscsit_global.global_target_list, 841 &tmp_tgt, NULL)) != NULL) { 842 iscsit_tgt_hold(result); 843 } 844 845 return (result); 846 } 847 848 iscsit_tgt_t * 849 iscsit_tgt_create(it_tgt_t *cfg_tgt) 850 { 851 iscsit_tgt_t *result; 852 stmf_local_port_t *lport; 853 854 /* 855 * Each target is an STMF local port. 856 */ 857 lport = stmf_alloc(STMF_STRUCT_STMF_LOCAL_PORT, 858 sizeof (iscsit_tgt_t) + sizeof (scsi_devid_desc_t) + 859 strnlen(cfg_tgt->tgt_name, MAX_ISCSI_NODENAMELEN) + 1, 0); 860 if (lport == NULL) { 861 return (NULL); 862 } 863 864 result = lport->lport_port_private; 865 result->target_state = TS_CREATED; 866 result->target_stmf_lport_registered = 0; 867 /* Use pointer arithmetic to find scsi_devid_desc_t */ 868 result->target_devid = (scsi_devid_desc_t *)(result + 1); 869 (void) strcpy((char *)result->target_devid->ident, cfg_tgt->tgt_name); 870 result->target_devid->ident_length = 871 strnlen(cfg_tgt->tgt_name, MAX_ISCSI_NODENAMELEN); 872 result->target_devid->protocol_id = PROTOCOL_iSCSI; 873 result->target_devid->piv = 1; 874 result->target_devid->code_set = CODE_SET_ASCII; 875 result->target_devid->association = ID_IS_TARGET_PORT; 876 877 /* Store a shortcut to the target name */ 878 result->target_name = (char *)result->target_devid->ident; 879 idm_sm_audit_init(&result->target_state_audit); 880 mutex_init(&result->target_mutex, NULL, MUTEX_DEFAULT, NULL); 881 avl_create(&result->target_sess_list, iscsit_sess_avl_compare, 882 sizeof (iscsit_sess_t), offsetof(iscsit_sess_t, ist_tgt_ln)); 883 avl_create(&result->target_tpgt_list, iscsit_tpgt_avl_compare, 884 sizeof (iscsit_tpgt_t), offsetof(iscsit_tpgt_t, tpgt_tgt_ln)); 885 list_create(&result->target_events, sizeof (tgt_event_ctx_t), 886 offsetof(tgt_event_ctx_t, te_ctx_node)); 887 idm_refcnt_init(&result->target_refcnt, result); 888 idm_refcnt_init(&result->target_sess_refcnt, result); 889 890 /* Finish initializing local port */ 891 lport->lport_abort_timeout = 0xffffffff; /* seconds */ 892 lport->lport_id = result->target_devid; 893 lport->lport_pp = iscsit_global.global_pp; 894 lport->lport_ds = iscsit_global.global_dbuf_store; 895 lport->lport_xfer_data = &iscsit_xfer_scsi_data; 896 lport->lport_send_status = &iscsit_send_scsi_status; 897 lport->lport_task_free = &iscsit_lport_task_free; 898 lport->lport_abort = &iscsit_abort; 899 lport->lport_ctl = &iscsit_ctl; 900 result->target_stmf_lport = lport; 901 902 /* 903 * Additional target modifications from config 904 */ 905 if (iscsit_tgt_modify(result, cfg_tgt) != IDM_STATUS_SUCCESS) { 906 iscsit_tgt_destroy(result); 907 return (NULL); 908 } 909 910 /* 911 * Register the target with STMF but not until we have all the 912 * TPGT bindings and any other additional config setup. STMF 913 * may immediately ask us to go online. 914 */ 915 if (stmf_register_local_port(lport) != STMF_SUCCESS) { 916 iscsit_tgt_destroy(result); 917 return (NULL); 918 } 919 result->target_stmf_lport_registered = 1; 920 921 iscsit_global_hold(); 922 923 return (result); 924 } 925 926 static idm_status_t 927 iscsit_tgt_modify(iscsit_tgt_t *tgt, it_tgt_t *cfg_tgt) 928 { 929 idm_status_t idmrc = IDM_STATUS_SUCCESS; 930 list_t tpgt_del_list; 931 932 /* Merge TPGT */ 933 list_create(&tpgt_del_list, sizeof (iscsit_tpgt_t), 934 offsetof(iscsit_tpgt_t, tpgt_delete_ln)); 935 936 mutex_enter(&tgt->target_mutex); 937 if (tgt->target_props) { 938 nvlist_free(tgt->target_props); 939 tgt->target_props = NULL; 940 } 941 (void) nvlist_dup(cfg_tgt->tgt_properties, &tgt->target_props, 942 KM_SLEEP); 943 944 if ((idmrc = iscsit_tgt_merge_tpgt(tgt, cfg_tgt, &tpgt_del_list)) != 945 IDM_STATUS_SUCCESS) { 946 /* This should never happen */ 947 cmn_err(CE_WARN, "Fail to configure TPGTs for " 948 "target %s, the target modification could not be " 949 "completed.", tgt->target_name); 950 } 951 952 mutex_exit(&tgt->target_mutex); 953 954 iscsit_config_destroy_tpgts(&tpgt_del_list); 955 956 /* 957 * If the target is truly modified (not newly created), 958 * inform iSNS to update the target registration. 959 */ 960 if ((tgt->target_generation > 0) && 961 (cfg_tgt->tgt_generation > tgt->target_generation)) { 962 iscsit_isns_target_update(tgt); 963 } 964 965 tgt->target_generation = cfg_tgt->tgt_generation; 966 967 return (idmrc); 968 } 969 970 void 971 iscsit_config_destroy_tpgts(list_t *tpgt_del_list) 972 { 973 iscsit_tpgt_t *tpgt, *next_tpgt; 974 975 for (tpgt = list_head(tpgt_del_list); 976 tpgt != NULL; 977 tpgt = next_tpgt) { 978 next_tpgt = list_next(tpgt_del_list, tpgt); 979 980 list_remove(tpgt_del_list, tpgt); 981 idm_refcnt_wait_ref(&tpgt->tpgt_refcnt); 982 iscsit_tpgt_destroy(tpgt); 983 } 984 } 985 986 void 987 iscsit_tgt_unref(void *tgt_void) 988 { 989 iscsit_tgt_t *tgt = tgt_void; 990 991 ISCSIT_GLOBAL_LOCK(RW_WRITER); 992 list_remove(&iscsit_global.global_deleted_target_list, tgt); 993 ISCSIT_GLOBAL_UNLOCK(); 994 iscsit_tgt_destroy(tgt); 995 } 996 997 void 998 iscsit_tgt_async_wait_ref(iscsit_tgt_t *tgt, idm_refcnt_cb_t *cb_func) 999 { 1000 idm_refcnt_async_wait_ref(&tgt->target_refcnt, cb_func); 1001 } 1002 1003 static void 1004 iscsit_tgt_destroy(iscsit_tgt_t *tgt) 1005 { 1006 iscsit_tpgt_t *tpgt, *next_tpgt; 1007 1008 ASSERT(tgt->target_state == TS_DELETING); 1009 1010 /* 1011 * Destroy all target portal group tags 1012 */ 1013 mutex_enter(&tgt->target_mutex); 1014 for (tpgt = avl_first(&tgt->target_tpgt_list); 1015 tpgt != NULL; 1016 tpgt = next_tpgt) { 1017 next_tpgt = AVL_NEXT(&tgt->target_tpgt_list, tpgt); 1018 avl_remove(&tgt->target_tpgt_list, tpgt); 1019 iscsit_tpgt_destroy(tpgt); 1020 } 1021 1022 if (tgt->target_props) { 1023 nvlist_free(tgt->target_props); 1024 } 1025 mutex_exit(&tgt->target_mutex); 1026 1027 /* 1028 * Destroy target 1029 */ 1030 idm_refcnt_destroy(&tgt->target_sess_refcnt); 1031 idm_refcnt_destroy(&tgt->target_refcnt); 1032 list_destroy(&tgt->target_events); 1033 avl_destroy(&tgt->target_tpgt_list); 1034 avl_destroy(&tgt->target_sess_list); 1035 mutex_destroy(&tgt->target_mutex); 1036 stmf_free(tgt->target_stmf_lport); /* Also frees "tgt' */ 1037 iscsit_global_rele(); 1038 } 1039 1040 void 1041 iscsit_tgt_hold(iscsit_tgt_t *tgt) 1042 { 1043 idm_refcnt_hold(&tgt->target_refcnt); 1044 } 1045 1046 void 1047 iscsit_tgt_rele(iscsit_tgt_t *tgt) 1048 { 1049 idm_refcnt_rele(&tgt->target_refcnt); 1050 } 1051 1052 int 1053 iscsit_tgt_avl_compare(const void *void_tgt1, const void *void_tgt2) 1054 { 1055 const iscsit_tgt_t *tgt1 = void_tgt1; 1056 const iscsit_tgt_t *tgt2 = void_tgt2; 1057 int result; 1058 1059 /* 1060 * Sort by ISID first then TSIH 1061 */ 1062 result = strcmp(tgt1->target_name, tgt2->target_name); 1063 if (result < 0) { 1064 return (-1); 1065 } else if (result > 0) { 1066 return (1); 1067 } 1068 1069 return (0); 1070 } 1071 1072 1073 iscsit_tpgt_t * 1074 iscsit_tgt_lookup_tpgt(iscsit_tgt_t *tgt, uint16_t tag) 1075 { 1076 iscsit_tpgt_t *result; 1077 1078 mutex_enter(&tgt->target_mutex); 1079 result = iscsit_tgt_lookup_tpgt_locked(tgt, tag); 1080 mutex_exit(&tgt->target_mutex); 1081 1082 return (result); 1083 } 1084 1085 static iscsit_tpgt_t * 1086 iscsit_tgt_lookup_tpgt_locked(iscsit_tgt_t *tgt, uint16_t tag) 1087 { 1088 iscsit_tpgt_t tmp_tpgt; 1089 iscsit_tpgt_t *result; 1090 1091 /* Caller holds tgt->target_mutex */ 1092 tmp_tpgt.tpgt_tag = tag; 1093 if ((result = avl_find(&tgt->target_tpgt_list, &tmp_tpgt, NULL)) != 1094 NULL) { 1095 iscsit_tpgt_hold(result); 1096 } 1097 1098 return (result); 1099 } 1100 1101 iscsit_portal_t * 1102 iscsit_tgt_lookup_portal(iscsit_tgt_t *tgt, struct sockaddr_storage *sa, 1103 iscsit_tpgt_t **output_tpgt) 1104 { 1105 iscsit_tpgt_t *tpgt; 1106 iscsit_portal_t *portal; 1107 1108 /* Caller holds tgt->target_mutex */ 1109 ASSERT(mutex_owned(&tgt->target_mutex)); 1110 for (tpgt = avl_first(&tgt->target_tpgt_list); 1111 tpgt != NULL; 1112 tpgt = AVL_NEXT(&tgt->target_tpgt_list, tpgt)) { 1113 portal = iscsit_tpg_portal_lookup(tpgt->tpgt_tpg, sa); 1114 if (portal) { 1115 iscsit_tpgt_hold(tpgt); 1116 *output_tpgt = tpgt; 1117 return (portal); 1118 } 1119 } 1120 1121 return (NULL); 1122 } 1123 1124 1125 void 1126 iscsit_tgt_bind_sess(iscsit_tgt_t *tgt, iscsit_sess_t *sess) 1127 { 1128 if (tgt) { 1129 sess->ist_lport = tgt->target_stmf_lport; 1130 iscsit_tgt_hold(tgt); 1131 idm_refcnt_hold(&tgt->target_sess_refcnt); 1132 mutex_enter(&tgt->target_mutex); 1133 avl_add(&tgt->target_sess_list, sess); 1134 mutex_exit(&tgt->target_mutex); 1135 } else { 1136 /* Discovery session */ 1137 sess->ist_lport = NULL; 1138 iscsit_global_hold(); 1139 ISCSIT_GLOBAL_LOCK(RW_WRITER); 1140 avl_add(&iscsit_global.global_discovery_sessions, sess); 1141 ISCSIT_GLOBAL_UNLOCK(); 1142 } 1143 } 1144 1145 void 1146 iscsit_tgt_unbind_sess(iscsit_tgt_t *tgt, iscsit_sess_t *sess) 1147 { 1148 if (tgt) { 1149 mutex_enter(&tgt->target_mutex); 1150 avl_remove(&tgt->target_sess_list, sess); 1151 mutex_exit(&tgt->target_mutex); 1152 sess->ist_tgt = (iscsit_tgt_t *)SESS_UNBOUND_FROM_TGT; 1153 idm_refcnt_rele(&tgt->target_sess_refcnt); 1154 iscsit_tgt_rele(tgt); 1155 } else { 1156 /* Discovery session */ 1157 ISCSIT_GLOBAL_LOCK(RW_WRITER); 1158 avl_remove(&iscsit_global.global_discovery_sessions, sess); 1159 ISCSIT_GLOBAL_UNLOCK(); 1160 iscsit_global_rele(); 1161 } 1162 } 1163 1164 #define LOCK_FOR_SESS_LOOKUP(lookup_tgt) { \ 1165 if ((lookup_tgt) == NULL) { \ 1166 ISCSIT_GLOBAL_LOCK(RW_READER); \ 1167 } else { \ 1168 mutex_enter(&(lookup_tgt)->target_mutex); \ 1169 } \ 1170 } 1171 1172 #define UNLOCK_FOR_SESS_LOOKUP(lookup_tgt) { \ 1173 if ((lookup_tgt) == NULL) { \ 1174 ISCSIT_GLOBAL_UNLOCK(); \ 1175 } else { \ 1176 mutex_exit(&(lookup_tgt)->target_mutex); \ 1177 } \ 1178 } 1179 1180 iscsit_sess_t * 1181 iscsit_tgt_lookup_sess(iscsit_tgt_t *tgt, char *initiator_name, 1182 uint8_t *isid, uint16_t tsih, uint16_t tag) 1183 { 1184 iscsit_sess_t tmp_sess; 1185 avl_tree_t *sess_avl; 1186 avl_index_t where; 1187 iscsit_sess_t *result; 1188 1189 /* 1190 * If tgt is NULL then we are looking for a discovery session 1191 */ 1192 if (tgt == NULL) { 1193 sess_avl = &iscsit_global.global_discovery_sessions; 1194 } else { 1195 sess_avl = &tgt->target_sess_list; 1196 } 1197 1198 LOCK_FOR_SESS_LOOKUP(tgt); 1199 if (avl_numnodes(sess_avl) == NULL) { 1200 UNLOCK_FOR_SESS_LOOKUP(tgt); 1201 return (NULL); 1202 } 1203 1204 /* 1205 * We'll try to find a session matching ISID + TSIH first. If we 1206 * can't find one then we will return the closest match. If the 1207 * caller needs an exact match it must compare the TSIH after 1208 * the session is returned. 1209 * 1210 * The reason we do this "fuzzy matching" is to allow matching 1211 * sessions with different TSIH values on the same AVL list. This 1212 * makes session reinstatement much easier since the new session can 1213 * live on the list at the same time as the old session is cleaning up. 1214 */ 1215 bcopy(isid, tmp_sess.ist_isid, ISCSI_ISID_LEN); 1216 tmp_sess.ist_initiator_name = initiator_name; 1217 tmp_sess.ist_tsih = tsih; 1218 tmp_sess.ist_tpgt_tag = tag; 1219 1220 result = avl_find(sess_avl, &tmp_sess, &where); 1221 if (result != NULL) { 1222 iscsit_sess_hold(result); 1223 UNLOCK_FOR_SESS_LOOKUP(tgt); 1224 return (result); 1225 } 1226 1227 /* 1228 * avl_find_nearest() may return a result with a different ISID so 1229 * we should only return a result if the name and ISID match 1230 */ 1231 result = avl_nearest(sess_avl, where, AVL_BEFORE); 1232 if ((result != NULL) && 1233 (strcmp(result->ist_initiator_name, initiator_name) == 0) && 1234 (memcmp(result->ist_isid, isid, ISCSI_ISID_LEN) == 0) && 1235 (result->ist_tpgt_tag == tag)) { 1236 iscsit_sess_hold(result); 1237 UNLOCK_FOR_SESS_LOOKUP(tgt); 1238 return (result); 1239 } 1240 1241 result = avl_nearest(sess_avl, where, AVL_AFTER); 1242 if ((result != NULL) && 1243 (strcmp(result->ist_initiator_name, initiator_name) == 0) && 1244 (memcmp(result->ist_isid, isid, ISCSI_ISID_LEN) == 0) && 1245 (result->ist_tpgt_tag == tag)) { 1246 iscsit_sess_hold(result); 1247 UNLOCK_FOR_SESS_LOOKUP(tgt); 1248 return (result); 1249 } 1250 1251 UNLOCK_FOR_SESS_LOOKUP(tgt); 1252 1253 return (NULL); 1254 } 1255 1256 static idm_status_t 1257 iscsit_tgt_merge_tpgt(iscsit_tgt_t *tgt, it_tgt_t *cfg_tgt, 1258 list_t *tpgt_del_list) 1259 { 1260 iscsit_tpgt_t *tpgt, *next_tpgt; 1261 it_tpgt_t *cfg_tpgt; 1262 1263 /* 1264 * 1. >> Lock << 1265 * 2. Removing all objects and place on a temp list 1266 * 3. Add new objects 1267 * 4. >> Unlock << 1268 * 5. tpgt_del_list contains deleted objects 1269 */ 1270 ASSERT(avl_is_empty(&tgt->target_tpgt_list) || 1271 (tpgt_del_list != NULL)); 1272 1273 if (tpgt_del_list) { 1274 for (tpgt = avl_first(&tgt->target_tpgt_list); 1275 tpgt != NULL; tpgt = next_tpgt) { 1276 next_tpgt = AVL_NEXT(&tgt->target_tpgt_list, tpgt); 1277 avl_remove(&tgt->target_tpgt_list, tpgt); 1278 if (tgt->target_state == TS_STMF_ONLINE) { 1279 tpgt->tpgt_needs_tpg_offline = B_TRUE; 1280 } 1281 list_insert_tail(tpgt_del_list, tpgt); 1282 } 1283 } 1284 1285 if (cfg_tgt->tgt_tpgt_list == NULL) { 1286 tpgt = iscsit_tpgt_create_default(); 1287 if (tgt->target_state == TS_STMF_ONLINE) { 1288 (void) iscsit_tpg_online(tpgt->tpgt_tpg); 1289 } 1290 avl_add(&tgt->target_tpgt_list, tpgt); 1291 } else { 1292 /* Add currently defined TPGTs */ 1293 for (cfg_tpgt = cfg_tgt->tgt_tpgt_list; 1294 cfg_tpgt != NULL; 1295 cfg_tpgt = cfg_tpgt->tpgt_next) { 1296 tpgt = iscsit_tpgt_create(cfg_tpgt); 1297 if (tpgt == NULL) 1298 goto tpgt_merge_error; 1299 if (tgt->target_state == TS_STMF_ONLINE) { 1300 (void) iscsit_tpg_online(tpgt->tpgt_tpg); 1301 } 1302 avl_add(&tgt->target_tpgt_list, tpgt); 1303 } 1304 } 1305 1306 return (IDM_STATUS_SUCCESS); 1307 1308 tpgt_merge_error: 1309 /* 1310 * This is a problem in configuration we received so it should never 1311 * happen. That's good because we're probably no longer in a state 1312 * requested by the user -- all the unbind operations have already 1313 * taken place. 1314 */ 1315 return (IDM_STATUS_FAIL); 1316 } 1317 1318 static iscsit_tpgt_t * 1319 iscsit_tpgt_create(it_tpgt_t *cfg_tpgt) 1320 { 1321 iscsit_tpg_t *tpg; 1322 iscsit_tpgt_t *result; 1323 1324 /* This takes a reference on the TPG */ 1325 tpg = iscsit_tpg_lookup_locked(cfg_tpgt->tpgt_tpg_name); 1326 if (tpg == NULL) 1327 return (NULL); 1328 1329 result = kmem_zalloc(sizeof (*result), KM_SLEEP); 1330 1331 result->tpgt_tpg = tpg; 1332 result->tpgt_tag = cfg_tpgt->tpgt_tag; 1333 1334 return (result); 1335 } 1336 1337 iscsit_tpgt_t * 1338 iscsit_tpgt_create_default() 1339 { 1340 iscsit_tpgt_t *result; 1341 1342 result = kmem_zalloc(sizeof (*result), KM_SLEEP); 1343 1344 result->tpgt_tpg = iscsit_global.global_default_tpg; 1345 iscsit_tpg_hold(result->tpgt_tpg); 1346 result->tpgt_tag = ISCSIT_DEFAULT_TPGT; 1347 1348 return (result); 1349 } 1350 1351 void 1352 iscsit_tpgt_destroy(iscsit_tpgt_t *tpgt) 1353 { 1354 if (tpgt->tpgt_needs_tpg_offline) { 1355 iscsit_tpg_offline(tpgt->tpgt_tpg); 1356 } 1357 iscsit_tpg_rele(tpgt->tpgt_tpg); 1358 kmem_free(tpgt, sizeof (*tpgt)); 1359 } 1360 1361 void 1362 iscsit_tpgt_hold(iscsit_tpgt_t *tpgt) 1363 { 1364 idm_refcnt_hold(&tpgt->tpgt_refcnt); 1365 } 1366 1367 void 1368 iscsit_tpgt_rele(iscsit_tpgt_t *tpgt) 1369 { 1370 idm_refcnt_rele(&tpgt->tpgt_refcnt); 1371 } 1372 1373 int 1374 iscsit_tpgt_avl_compare(const void *void_tpgt1, const void *void_tpgt2) 1375 { 1376 const iscsit_tpgt_t *tpgt1 = void_tpgt1; 1377 const iscsit_tpgt_t *tpgt2 = void_tpgt2; 1378 1379 if (tpgt1->tpgt_tag < tpgt2->tpgt_tag) 1380 return (-1); 1381 else if (tpgt1->tpgt_tag > tpgt2->tpgt_tag) 1382 return (1); 1383 1384 return (0); 1385 } 1386 1387 static idm_status_t 1388 iscsit_tgt_online(iscsit_tgt_t *tgt) 1389 { 1390 iscsit_tpgt_t *tpgt, *tpgt_fail; 1391 idm_status_t rc; 1392 1393 mutex_enter(&tgt->target_mutex); 1394 1395 ASSERT(tgt->target_sess_list.avl_numnodes == 0); 1396 idm_refcnt_reset(&tgt->target_sess_refcnt); 1397 for (tpgt = avl_first(&tgt->target_tpgt_list); 1398 tpgt != NULL; 1399 tpgt = AVL_NEXT(&tgt->target_tpgt_list, tpgt)) { 1400 rc = iscsit_tpg_online(tpgt->tpgt_tpg); 1401 if (rc != IDM_STATUS_SUCCESS) { 1402 tpgt_fail = tpgt; 1403 goto tgt_online_fail; 1404 } 1405 } 1406 1407 mutex_exit(&tgt->target_mutex); 1408 1409 return (IDM_STATUS_SUCCESS); 1410 1411 tgt_online_fail: 1412 /* Offline all the tpgs we successfully onlined up to the failure */ 1413 for (tpgt = avl_first(&tgt->target_tpgt_list); 1414 tpgt != tpgt_fail; 1415 tpgt = AVL_NEXT(&tgt->target_tpgt_list, tpgt)) { 1416 iscsit_tpg_offline(tpgt->tpgt_tpg); 1417 } 1418 mutex_exit(&tgt->target_mutex); 1419 return (rc); 1420 } 1421 1422 static void 1423 iscsit_tgt_offline_cb(void *tgt_void) 1424 { 1425 iscsit_tgt_t *tgt = tgt_void; 1426 stmf_change_status_t scs; 1427 1428 iscsit_tgt_sm_event(tgt, TE_OFFLINE_COMPLETE); 1429 1430 scs.st_completion_status = STMF_SUCCESS; 1431 scs.st_additional_info = NULL; 1432 (void) stmf_ctl(STMF_CMD_LPORT_OFFLINE_COMPLETE, 1433 tgt->target_stmf_lport, &scs); 1434 } 1435 1436 static void 1437 iscsit_tgt_offline(iscsit_tgt_t *tgt) 1438 { 1439 iscsit_tpgt_t *tpgt; 1440 iscsit_sess_t *ist; 1441 1442 mutex_enter(&tgt->target_mutex); 1443 1444 /* Offline target portal groups */ 1445 for (tpgt = avl_first(&tgt->target_tpgt_list); 1446 tpgt != NULL; 1447 tpgt = AVL_NEXT(&tgt->target_tpgt_list, tpgt)) { 1448 iscsit_tpg_offline(tpgt->tpgt_tpg); 1449 } 1450 1451 /* Close any active sessions */ 1452 for (ist = avl_first(&tgt->target_sess_list); 1453 ist != NULL; 1454 ist = AVL_NEXT(&tgt->target_sess_list, ist)) { 1455 /* 1456 * This is not a synchronous operation but after all 1457 * sessions have been cleaned up there will be no 1458 * more session-related holds on the target. 1459 */ 1460 iscsit_sess_close(ist); 1461 } 1462 1463 mutex_exit(&tgt->target_mutex); 1464 1465 /* 1466 * Wait for all the sessions to quiesce. 1467 */ 1468 idm_refcnt_async_wait_ref(&tgt->target_sess_refcnt, 1469 &iscsit_tgt_offline_cb); 1470 } 1471 1472 it_cfg_status_t 1473 iscsit_config_merge_tpg(it_config_t *cfg, list_t *tpg_del_list) 1474 { 1475 it_tpg_t *cfg_tpg; 1476 iscsit_tpg_t *tpg, *next_tpg; 1477 1478 /* 1479 * 1. >> Lock << 1480 * 2. Removing deleted objects and place on a temp list 1481 * 3. Add new objects 1482 * 4. >> Unlock << 1483 * 5. tpg_del_list contains objects to destroy 1484 */ 1485 for (tpg = avl_first(&iscsit_global.global_tpg_list); 1486 tpg != NULL; 1487 tpg = next_tpg) { 1488 next_tpg = AVL_NEXT(&iscsit_global.global_tpg_list, tpg); 1489 1490 if (it_tpg_lookup(cfg, tpg->tpg_name) == NULL) { 1491 /* 1492 * The policy around when to allow a target portal 1493 * group to be deleted is implemented in libiscsit. 1494 * By the time the request gets to the kernel module 1495 * we expect that it conforms to policy so we will 1496 * cleanup all references to TPG and destroy it if it 1497 * is possible to do so. 1498 * 1499 */ 1500 avl_remove(&iscsit_global.global_tpg_list, tpg); 1501 list_insert_tail(tpg_del_list, tpg); 1502 } 1503 } 1504 1505 /* Now walk through the list of configured target portal groups */ 1506 for (cfg_tpg = cfg->config_tpg_list; 1507 cfg_tpg != NULL; 1508 cfg_tpg = cfg_tpg->tpg_next) { 1509 /* See if we have an existing target portal group */ 1510 tpg = iscsit_tpg_lookup_locked(cfg_tpg->tpg_name); 1511 1512 if (tpg == NULL) { 1513 tpg = iscsit_tpg_create(cfg_tpg); 1514 ASSERT(tpg != NULL); 1515 avl_add(&iscsit_global.global_tpg_list, tpg); 1516 } else { 1517 mutex_enter(&tpg->tpg_mutex); 1518 iscsit_tpg_modify(tpg, cfg_tpg); 1519 mutex_exit(&tpg->tpg_mutex); 1520 iscsit_tpg_rele(tpg); 1521 } 1522 } 1523 1524 return (ITCFG_SUCCESS); 1525 } 1526 1527 1528 void 1529 iscsit_config_destroy_tpgs(list_t *tpg_del_list) 1530 { 1531 iscsit_tpg_t *tpg, *next_tpg; 1532 1533 /* Now finish destroying the target portal groups */ 1534 for (tpg = list_head(tpg_del_list); 1535 tpg != NULL; 1536 tpg = next_tpg) { 1537 next_tpg = list_next(tpg_del_list, tpg); 1538 list_remove(tpg_del_list, tpg); 1539 idm_refcnt_wait_ref(&tpg->tpg_refcnt); 1540 1541 /* Kill it */ 1542 iscsit_tpg_destroy(tpg); 1543 } 1544 } 1545 1546 iscsit_tpg_t * 1547 iscsit_tpg_lookup(char *tpg_name) 1548 { 1549 iscsit_tpg_t *result; 1550 1551 ISCSIT_GLOBAL_LOCK(RW_READER); 1552 result = iscsit_tpg_lookup_locked(tpg_name); 1553 ISCSIT_GLOBAL_UNLOCK(); 1554 1555 return (result); 1556 } 1557 1558 static iscsit_tpg_t * 1559 iscsit_tpg_lookup_locked(char *tpg_name) 1560 { 1561 iscsit_tpg_t tmp_tpg; 1562 iscsit_tpg_t *result; 1563 1564 (void) strlcpy(tmp_tpg.tpg_name, tpg_name, MAX_ISCSI_NODENAMELEN); 1565 if ((result = avl_find(&iscsit_global.global_tpg_list, 1566 &tmp_tpg, NULL)) != NULL) { 1567 iscsit_tpg_hold(result); 1568 } 1569 1570 return (result); 1571 } 1572 1573 iscsit_tpg_t * 1574 iscsit_tpg_create(it_tpg_t *cfg_tpg) 1575 { 1576 iscsit_tpg_t *tpg; 1577 1578 tpg = kmem_zalloc(sizeof (*tpg), KM_SLEEP); 1579 1580 mutex_init(&tpg->tpg_mutex, NULL, MUTEX_DEFAULT, NULL); 1581 (void) strlcpy(tpg->tpg_name, cfg_tpg->tpg_name, MAX_TPG_NAMELEN); 1582 avl_create(&tpg->tpg_portal_list, iscsit_portal_avl_compare, 1583 sizeof (iscsit_portal_t), offsetof(iscsit_portal_t, portal_tpg_ln)); 1584 idm_refcnt_init(&tpg->tpg_refcnt, tpg); 1585 1586 mutex_enter(&tpg->tpg_mutex); 1587 iscsit_tpg_modify(tpg, cfg_tpg); 1588 mutex_exit(&tpg->tpg_mutex); 1589 iscsit_global_hold(); 1590 1591 return (tpg); 1592 } 1593 1594 static void 1595 iscsit_tpg_modify(iscsit_tpg_t *tpg, it_tpg_t *cfg_tpg) 1596 { 1597 iscsit_portal_t *portal, *next_portal; 1598 it_portal_t *cfg_portal; 1599 1600 /* Update portals */ 1601 for (portal = avl_first(&tpg->tpg_portal_list); 1602 portal != NULL; 1603 portal = next_portal) { 1604 next_portal = AVL_NEXT(&tpg->tpg_portal_list, portal); 1605 if (it_portal_lookup(cfg_tpg, &portal->portal_addr) == NULL) { 1606 avl_remove(&tpg->tpg_portal_list, portal); 1607 iscsit_portal_destroy(portal); 1608 } 1609 } 1610 1611 for (cfg_portal = cfg_tpg->tpg_portal_list; 1612 cfg_portal != NULL; 1613 cfg_portal = cfg_portal->next) { 1614 if ((portal = iscsit_tpg_portal_lookup_locked(tpg, 1615 &cfg_portal->portal_addr)) == NULL) { 1616 (void) iscsit_portal_create(tpg, 1617 &cfg_portal->portal_addr); 1618 } else { 1619 iscsit_portal_rele(portal); 1620 } 1621 } 1622 } 1623 1624 void 1625 iscsit_tpg_destroy(iscsit_tpg_t *tpg) 1626 { 1627 iscsit_portal_t *portal, *next_portal; 1628 1629 for (portal = avl_first(&tpg->tpg_portal_list); 1630 portal != NULL; 1631 portal = next_portal) { 1632 next_portal = AVL_NEXT(&tpg->tpg_portal_list, portal); 1633 avl_remove(&tpg->tpg_portal_list, portal); 1634 iscsit_portal_destroy(portal); 1635 } 1636 1637 idm_refcnt_wait_ref(&tpg->tpg_refcnt); 1638 idm_refcnt_destroy(&tpg->tpg_refcnt); 1639 avl_destroy(&tpg->tpg_portal_list); 1640 mutex_destroy(&tpg->tpg_mutex); 1641 kmem_free(tpg, sizeof (*tpg)); 1642 iscsit_global_rele(); 1643 } 1644 1645 void 1646 iscsit_tpg_hold(iscsit_tpg_t *tpg) 1647 { 1648 idm_refcnt_hold(&tpg->tpg_refcnt); 1649 } 1650 1651 void 1652 iscsit_tpg_rele(iscsit_tpg_t *tpg) 1653 { 1654 idm_refcnt_rele(&tpg->tpg_refcnt); 1655 } 1656 1657 iscsit_tpg_t * 1658 iscsit_tpg_createdefault() 1659 { 1660 iscsit_tpg_t *tpg; 1661 1662 tpg = kmem_zalloc(sizeof (*tpg), KM_SLEEP); 1663 1664 mutex_init(&tpg->tpg_mutex, NULL, MUTEX_DEFAULT, NULL); 1665 (void) strlcpy(tpg->tpg_name, ISCSIT_DEFAULT_TPG, MAX_TPG_NAMELEN); 1666 avl_create(&tpg->tpg_portal_list, iscsit_portal_avl_compare, 1667 sizeof (iscsit_portal_t), offsetof(iscsit_portal_t, portal_tpg_ln)); 1668 idm_refcnt_init(&tpg->tpg_refcnt, tpg); 1669 1670 /* Now create default portal */ 1671 if (iscsit_portal_create(tpg, NULL) == NULL) { 1672 iscsit_tpg_destroy(tpg); 1673 return (NULL); 1674 } 1675 1676 return (tpg); 1677 } 1678 1679 void 1680 iscsit_tpg_destroydefault(iscsit_tpg_t *tpg) 1681 { 1682 iscsit_portal_t *portal; 1683 1684 portal = avl_first(&tpg->tpg_portal_list); 1685 ASSERT(portal != NULL); 1686 avl_remove(&tpg->tpg_portal_list, portal); 1687 iscsit_portal_destroy(portal); 1688 1689 idm_refcnt_wait_ref(&tpg->tpg_refcnt); 1690 idm_refcnt_destroy(&tpg->tpg_refcnt); 1691 avl_destroy(&tpg->tpg_portal_list); 1692 mutex_destroy(&tpg->tpg_mutex); 1693 kmem_free(tpg, sizeof (*tpg)); 1694 } 1695 1696 int 1697 iscsit_tpg_avl_compare(const void *void_tpg1, const void *void_tpg2) 1698 { 1699 const iscsit_tpg_t *tpg1 = void_tpg1; 1700 const iscsit_tpg_t *tpg2 = void_tpg2; 1701 int result; 1702 1703 /* 1704 * Sort by ISID first then TSIH 1705 */ 1706 result = strcmp(tpg1->tpg_name, tpg2->tpg_name); 1707 if (result < 0) { 1708 return (-1); 1709 } else if (result > 0) { 1710 return (1); 1711 } 1712 1713 return (0); 1714 } 1715 1716 idm_status_t 1717 iscsit_tpg_online(iscsit_tpg_t *tpg) 1718 { 1719 iscsit_portal_t *portal, *portal_fail; 1720 idm_status_t rc; 1721 1722 mutex_enter(&tpg->tpg_mutex); 1723 if (tpg->tpg_online == 0) { 1724 for (portal = avl_first(&tpg->tpg_portal_list); 1725 portal != NULL; 1726 portal = AVL_NEXT(&tpg->tpg_portal_list, portal)) { 1727 rc = iscsit_portal_online(portal); 1728 if (rc != IDM_STATUS_SUCCESS) { 1729 portal_fail = portal; 1730 goto tpg_online_fail; 1731 } 1732 } 1733 } 1734 tpg->tpg_online++; 1735 1736 mutex_exit(&tpg->tpg_mutex); 1737 return (IDM_STATUS_SUCCESS); 1738 1739 tpg_online_fail: 1740 /* Offline all the portals we successfully onlined up to the failure */ 1741 for (portal = avl_first(&tpg->tpg_portal_list); 1742 portal != portal_fail; 1743 portal = AVL_NEXT(&tpg->tpg_portal_list, portal)) { 1744 iscsit_portal_offline(portal); 1745 } 1746 mutex_exit(&tpg->tpg_mutex); 1747 return (rc); 1748 } 1749 1750 void 1751 iscsit_tpg_offline(iscsit_tpg_t *tpg) 1752 { 1753 iscsit_portal_t *portal; 1754 1755 mutex_enter(&tpg->tpg_mutex); 1756 tpg->tpg_online--; 1757 if (tpg->tpg_online == 0) { 1758 for (portal = avl_first(&tpg->tpg_portal_list); 1759 portal != NULL; 1760 portal = AVL_NEXT(&tpg->tpg_portal_list, portal)) { 1761 iscsit_portal_offline(portal); 1762 } 1763 } 1764 mutex_exit(&tpg->tpg_mutex); 1765 } 1766 1767 iscsit_portal_t * 1768 iscsit_tpg_portal_lookup(iscsit_tpg_t *tpg, struct sockaddr_storage *sa) 1769 { 1770 iscsit_portal_t *result; 1771 1772 mutex_enter(&tpg->tpg_mutex); 1773 result = iscsit_tpg_portal_lookup_locked(tpg, sa); 1774 mutex_exit(&tpg->tpg_mutex); 1775 1776 return (result); 1777 } 1778 1779 static iscsit_portal_t * 1780 iscsit_tpg_portal_lookup_locked(iscsit_tpg_t *tpg, 1781 struct sockaddr_storage *sa) 1782 { 1783 iscsit_portal_t tmp_portal; 1784 iscsit_portal_t *result; 1785 1786 /* Caller holds tpg->tpg_mutex */ 1787 bcopy(sa, &tmp_portal.portal_addr, sizeof (*sa)); 1788 if ((result = avl_find(&tpg->tpg_portal_list, &tmp_portal, NULL)) != 1789 NULL) { 1790 iscsit_portal_hold(result); 1791 } 1792 1793 return (result); 1794 } 1795 1796 iscsit_portal_t * 1797 iscsit_portal_create(iscsit_tpg_t *tpg, struct sockaddr_storage *sa) 1798 { 1799 iscsit_portal_t *portal; 1800 1801 portal = kmem_zalloc(sizeof (*portal), KM_SLEEP); 1802 /* 1803 * If (sa == NULL) then we are being asked to create the default 1804 * portal -- targets will use this portal when no portals are 1805 * explicitly configured. 1806 */ 1807 if (sa != NULL) { 1808 bcopy(sa, &portal->portal_addr, sizeof (*sa)); 1809 } 1810 1811 idm_refcnt_init(&portal->portal_refcnt, portal); 1812 1813 /* 1814 * Add this portal to the list 1815 */ 1816 avl_add(&tpg->tpg_portal_list, portal); 1817 1818 return (portal); 1819 } 1820 1821 void 1822 iscsit_portal_destroy(iscsit_portal_t *portal) 1823 { 1824 ASSERT(portal->portal_svc == NULL); 1825 idm_refcnt_destroy(&portal->portal_refcnt); 1826 kmem_free(portal, sizeof (*portal)); 1827 } 1828 1829 void 1830 iscsit_portal_hold(iscsit_portal_t *portal) 1831 { 1832 idm_refcnt_hold(&portal->portal_refcnt); 1833 } 1834 1835 void 1836 iscsit_portal_rele(iscsit_portal_t *portal) 1837 { 1838 idm_refcnt_rele(&portal->portal_refcnt); 1839 } 1840 1841 int 1842 iscsit_portal_avl_compare(const void *void_portal1, const void *void_portal2) 1843 { 1844 const iscsit_portal_t *portal1 = void_portal1; 1845 const iscsit_portal_t *portal2 = void_portal2; 1846 const struct sockaddr_storage *ss1, *ss2; 1847 const struct in_addr *in1, *in2; 1848 const struct in6_addr *in61, *in62; 1849 int i; 1850 1851 /* 1852 * Compare ports, then address family, then ip address 1853 */ 1854 ss1 = &portal1->portal_addr; 1855 ss2 = &portal2->portal_addr; 1856 if (((struct sockaddr_in *)ss1)->sin_port != 1857 ((struct sockaddr_in *)ss2)->sin_port) { 1858 if (((struct sockaddr_in *)ss1)->sin_port > 1859 ((struct sockaddr_in *)ss2)->sin_port) 1860 return (1); 1861 else 1862 return (-1); 1863 } 1864 1865 /* 1866 * ports are the same 1867 */ 1868 if (ss1->ss_family != ss2->ss_family) { 1869 if (ss1->ss_family == AF_INET) 1870 return (1); 1871 else 1872 return (-1); 1873 } 1874 /* 1875 * address families are the same 1876 */ 1877 if (ss1->ss_family == AF_INET) { 1878 in1 = &((struct sockaddr_in *)ss1)->sin_addr; 1879 in2 = &((struct sockaddr_in *)ss2)->sin_addr; 1880 1881 if (in1->s_addr > in2->s_addr) 1882 return (1); 1883 else if (in1->s_addr < in2->s_addr) 1884 return (-1); 1885 else 1886 return (0); 1887 } else if (ss1->ss_family == AF_INET6) { 1888 in61 = &((struct sockaddr_in6 *)ss1)->sin6_addr; 1889 in62 = &((struct sockaddr_in6 *)ss2)->sin6_addr; 1890 1891 for (i = 0; i < 4; i++) { 1892 if (in61->s6_addr32[i] > in62->s6_addr32[i]) 1893 return (1); 1894 else if (in61->s6_addr32[i] < in62->s6_addr32[i]) 1895 return (-1); 1896 } 1897 return (0); 1898 } else 1899 cmn_err(CE_WARN, 1900 "iscsit_portal_avl_compare: unknown ss_family %d", 1901 ss1->ss_family); 1902 1903 return (1); 1904 } 1905 1906 1907 idm_status_t 1908 iscsit_portal_online(iscsit_portal_t *portal) 1909 { 1910 idm_status_t rc; 1911 idm_svc_t *svc; 1912 idm_svc_req_t sr; 1913 uint16_t port; 1914 struct sockaddr_in *sin; 1915 1916 /* Caller holds parent TPG mutex */ 1917 if (portal->portal_online == 0) { 1918 /* 1919 * If there is no existing IDM service instance for this port, 1920 * create one. If the service exists, then the lookup, 1921 * creates a reference on the existing service. 1922 */ 1923 sin = (struct sockaddr_in *)&portal->portal_addr; 1924 port = ntohs(sin->sin_port); 1925 if (port == 0) 1926 port = ISCSI_LISTEN_PORT; 1927 ASSERT(portal->portal_svc == NULL); 1928 if ((svc = idm_tgt_svc_lookup(port)) == NULL) { 1929 sr.sr_port = port; 1930 sr.sr_li = iscsit_global.global_li; 1931 sr.sr_conn_ops.icb_rx_scsi_cmd = &iscsit_op_scsi_cmd; 1932 sr.sr_conn_ops.icb_rx_scsi_rsp = NULL; 1933 sr.sr_conn_ops.icb_rx_misc = &iscsit_rx_pdu; 1934 sr.sr_conn_ops.icb_rx_error = &iscsit_rx_pdu_error; 1935 sr.sr_conn_ops.icb_task_aborted = &iscsit_task_aborted; 1936 sr.sr_conn_ops.icb_client_notify = 1937 &iscsit_client_notify; 1938 sr.sr_conn_ops.icb_build_hdr = &iscsit_build_hdr; 1939 1940 if (idm_tgt_svc_create(&sr, &svc) != 1941 IDM_STATUS_SUCCESS) { 1942 return (IDM_STATUS_FAIL); 1943 } 1944 1945 /* Get reference on the service we just created */ 1946 idm_tgt_svc_hold(svc); 1947 } 1948 if ((rc = idm_tgt_svc_online(svc)) != IDM_STATUS_SUCCESS) { 1949 idm_tgt_svc_rele_and_destroy(svc); 1950 return (IDM_STATUS_FAIL); 1951 } 1952 portal->portal_svc = svc; 1953 1954 /* 1955 * Only call iSNS for first online 1956 */ 1957 iscsit_isns_portal_online(portal); 1958 } 1959 1960 portal->portal_online++; 1961 1962 return (rc); 1963 } 1964 1965 void 1966 iscsit_portal_offline(iscsit_portal_t *portal) 1967 { 1968 portal->portal_online--; 1969 1970 if (portal->portal_online == 0) { 1971 /* 1972 * Only call iSNS for last offline 1973 */ 1974 iscsit_isns_portal_offline(portal); 1975 idm_tgt_svc_offline(portal->portal_svc); 1976 /* If service is unreferenced, destroy it too */ 1977 idm_tgt_svc_rele_and_destroy(portal->portal_svc); 1978 portal->portal_svc = NULL; 1979 } 1980 1981 } 1982 1983 it_cfg_status_t 1984 iscsit_config_merge_ini(it_config_t *cfg) 1985 { 1986 iscsit_ini_t *ini, *next_ini; 1987 it_ini_t *cfg_ini; 1988 1989 /* 1990 * Initiator objects are so simple we will just destroy all the current 1991 * objects and build new ones. Nothing should ever reference an 1992 * initator object.. instead just lookup the initiator object and 1993 * grab the properties while holding the global config lock. 1994 */ 1995 for (ini = avl_first(&iscsit_global.global_ini_list); 1996 ini != NULL; 1997 ini = next_ini) { 1998 next_ini = AVL_NEXT(&iscsit_global.global_ini_list, ini); 1999 avl_remove(&iscsit_global.global_ini_list, ini); 2000 nvlist_free(ini->ini_props); 2001 kmem_free(ini, sizeof (*ini)); 2002 iscsit_global_rele(); 2003 } 2004 2005 for (cfg_ini = cfg->config_ini_list; 2006 cfg_ini != NULL; 2007 cfg_ini = cfg_ini->ini_next) { 2008 ini = kmem_zalloc(sizeof (iscsit_ini_t), KM_SLEEP); 2009 (void) strlcpy(ini->ini_name, cfg_ini->ini_name, 2010 MAX_ISCSI_NODENAMELEN); 2011 (void) nvlist_dup(cfg_ini->ini_properties, &ini->ini_props, 2012 KM_SLEEP); 2013 avl_add(&iscsit_global.global_ini_list, ini); 2014 iscsit_global_hold(); 2015 } 2016 2017 return (ITCFG_SUCCESS); 2018 } 2019 2020 int 2021 iscsit_ini_avl_compare(const void *void_ini1, const void *void_ini2) 2022 { 2023 const iscsit_ini_t *ini1 = void_ini1; 2024 const iscsit_ini_t *ini2 = void_ini2; 2025 int result; 2026 2027 /* 2028 * Sort by ISID first then TSIH 2029 */ 2030 result = strcmp(ini1->ini_name, ini2->ini_name); 2031 if (result < 0) { 2032 return (-1); 2033 } else if (result > 0) { 2034 return (1); 2035 } 2036 2037 return (0); 2038 } 2039 2040 iscsit_ini_t * 2041 iscsit_ini_lookup_locked(char *ini_name) 2042 { 2043 iscsit_ini_t tmp_ini; 2044 iscsit_ini_t *result; 2045 2046 /* 2047 * Use a dummy target for lookup, filling in all fields used in AVL 2048 * comparison. 2049 */ 2050 (void) strlcpy(tmp_ini.ini_name, ini_name, MAX_ISCSI_NODENAMELEN); 2051 result = avl_find(&iscsit_global.global_ini_list, &tmp_ini, NULL); 2052 2053 return (result); 2054 } 2055