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 (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. 23 */ 24 /* 25 * Copyright 2012, Nexenta Systems, Inc. All rights reserved. 26 * Copyright (c) 2013 by Delphix. All rights reserved. 27 * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. 28 */ 29 30 #include <sys/conf.h> 31 #include <sys/file.h> 32 #include <sys/ddi.h> 33 #include <sys/sunddi.h> 34 #include <sys/modctl.h> 35 #include <sys/scsi/scsi.h> 36 #include <sys/scsi/generic/persist.h> 37 #include <sys/scsi/impl/scsi_reset_notify.h> 38 #include <sys/disp.h> 39 #include <sys/byteorder.h> 40 #include <sys/atomic.h> 41 #include <sys/ethernet.h> 42 #include <sys/sdt.h> 43 #include <sys/nvpair.h> 44 #include <sys/zone.h> 45 #include <sys/id_space.h> 46 47 #include <sys/stmf.h> 48 #include <sys/lpif.h> 49 #include <sys/portif.h> 50 #include <sys/stmf_ioctl.h> 51 #include <sys/pppt_ic_if.h> 52 53 #include "stmf_impl.h" 54 #include "lun_map.h" 55 #include "stmf_state.h" 56 #include "stmf_stats.h" 57 58 /* 59 * Lock order: 60 * stmf_state_lock --> ilport_lock/iss_lockp --> ilu_task_lock 61 */ 62 63 static uint64_t stmf_session_counter = 0; 64 static uint16_t stmf_rtpid_counter = 0; 65 /* start messages at 1 */ 66 static uint64_t stmf_proxy_msg_id = 1; 67 #define MSG_ID_TM_BIT 0x8000000000000000 68 #define ALIGNED_TO_8BYTE_BOUNDARY(i) (((i) + 7) & ~7) 69 70 /* 71 * When stmf_io_deadman_enabled is set to B_TRUE, we check that finishing up 72 * I/O operations on an offlining LU doesn't take longer than stmf_io_deadman 73 * seconds. If it does, we trigger a panic to inform the user of hung I/O 74 * blocking us for too long. 75 */ 76 boolean_t stmf_io_deadman_enabled = B_TRUE; 77 int stmf_io_deadman = 1000; /* seconds */ 78 79 struct stmf_svc_clocks; 80 81 static int stmf_attach(dev_info_t *dip, ddi_attach_cmd_t cmd); 82 static int stmf_detach(dev_info_t *dip, ddi_detach_cmd_t cmd); 83 static int stmf_getinfo(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg, 84 void **result); 85 static int stmf_open(dev_t *devp, int flag, int otype, cred_t *credp); 86 static int stmf_close(dev_t dev, int flag, int otype, cred_t *credp); 87 static int stmf_ioctl(dev_t dev, int cmd, intptr_t data, int mode, 88 cred_t *credp, int *rval); 89 static int stmf_get_stmf_state(stmf_state_desc_t *std); 90 static int stmf_set_stmf_state(stmf_state_desc_t *std); 91 static void stmf_abort_task_offline(scsi_task_t *task, int offline_lu, 92 char *info); 93 static int stmf_set_alua_state(stmf_alua_state_desc_t *alua_state); 94 static void stmf_get_alua_state(stmf_alua_state_desc_t *alua_state); 95 96 static void stmf_task_audit(stmf_i_scsi_task_t *itask, 97 task_audit_event_t te, uint32_t cmd_or_iof, stmf_data_buf_t *dbuf); 98 99 static boolean_t stmf_base16_str_to_binary(char *c, int dplen, uint8_t *dp); 100 static char stmf_ctoi(char c); 101 stmf_xfer_data_t *stmf_prepare_tpgs_data(uint8_t ilu_alua); 102 void stmf_svc_init(); 103 stmf_status_t stmf_svc_fini(); 104 void stmf_svc(void *arg); 105 static void stmf_wait_ilu_tasks_finish(stmf_i_lu_t *ilu); 106 void stmf_svc_queue(int cmd, void *obj, stmf_state_change_info_t *info); 107 static void stmf_svc_kill_obj_requests(void *obj); 108 static void stmf_svc_timeout(struct stmf_svc_clocks *); 109 void stmf_check_freetask(); 110 void stmf_abort_target_reset(scsi_task_t *task); 111 stmf_status_t stmf_lun_reset_poll(stmf_lu_t *lu, struct scsi_task *task, 112 int target_reset); 113 void stmf_target_reset_poll(struct scsi_task *task); 114 void stmf_handle_lun_reset(scsi_task_t *task); 115 void stmf_handle_target_reset(scsi_task_t *task); 116 void stmf_xd_to_dbuf(stmf_data_buf_t *dbuf, int set_rel_off); 117 int stmf_load_ppd_ioctl(stmf_ppioctl_data_t *ppi, uint64_t *ppi_token, 118 uint32_t *err_ret); 119 int stmf_delete_ppd_ioctl(stmf_ppioctl_data_t *ppi); 120 int stmf_get_ppd_ioctl(stmf_ppioctl_data_t *ppi, stmf_ppioctl_data_t *ppi_out, 121 uint32_t *err_ret); 122 void stmf_delete_ppd(stmf_pp_data_t *ppd); 123 void stmf_delete_all_ppds(); 124 void stmf_trace_clear(); 125 void stmf_worker_init(); 126 stmf_status_t stmf_worker_fini(); 127 void stmf_worker_mgmt(); 128 void stmf_worker_task(void *arg); 129 static void stmf_task_lu_free(scsi_task_t *task, stmf_i_scsi_session_t *iss); 130 static stmf_status_t stmf_ic_lu_reg(stmf_ic_reg_dereg_lun_msg_t *msg, 131 uint32_t type); 132 static stmf_status_t stmf_ic_lu_dereg(stmf_ic_reg_dereg_lun_msg_t *msg); 133 static stmf_status_t stmf_ic_rx_scsi_status(stmf_ic_scsi_status_msg_t *msg); 134 static stmf_status_t stmf_ic_rx_status(stmf_ic_status_msg_t *msg); 135 static stmf_status_t stmf_ic_rx_scsi_data(stmf_ic_scsi_data_msg_t *msg); 136 void stmf_task_lu_killall(stmf_lu_t *lu, scsi_task_t *tm_task, stmf_status_t s); 137 138 /* pppt modhandle */ 139 ddi_modhandle_t pppt_mod; 140 141 /* pppt modload imported functions */ 142 stmf_ic_reg_port_msg_alloc_func_t ic_reg_port_msg_alloc; 143 stmf_ic_dereg_port_msg_alloc_func_t ic_dereg_port_msg_alloc; 144 stmf_ic_reg_lun_msg_alloc_func_t ic_reg_lun_msg_alloc; 145 stmf_ic_dereg_lun_msg_alloc_func_t ic_dereg_lun_msg_alloc; 146 stmf_ic_lun_active_msg_alloc_func_t ic_lun_active_msg_alloc; 147 stmf_ic_scsi_cmd_msg_alloc_func_t ic_scsi_cmd_msg_alloc; 148 stmf_ic_scsi_data_xfer_done_msg_alloc_func_t ic_scsi_data_xfer_done_msg_alloc; 149 stmf_ic_session_create_msg_alloc_func_t ic_session_reg_msg_alloc; 150 stmf_ic_session_destroy_msg_alloc_func_t ic_session_dereg_msg_alloc; 151 stmf_ic_tx_msg_func_t ic_tx_msg; 152 stmf_ic_msg_free_func_t ic_msg_free; 153 154 static void stmf_itl_task_start(stmf_i_scsi_task_t *itask); 155 static void stmf_itl_lu_new_task(stmf_i_scsi_task_t *itask); 156 static void stmf_itl_task_done(stmf_i_scsi_task_t *itask); 157 158 static void stmf_lport_xfer_start(stmf_i_scsi_task_t *itask, 159 stmf_data_buf_t *dbuf); 160 static void stmf_lport_xfer_done(stmf_i_scsi_task_t *itask, 161 stmf_data_buf_t *dbuf); 162 163 static void stmf_update_kstat_lu_q(scsi_task_t *, void()); 164 static void stmf_update_kstat_lport_q(scsi_task_t *, void()); 165 static void stmf_update_kstat_lu_io(scsi_task_t *, stmf_data_buf_t *); 166 static void stmf_update_kstat_lport_io(scsi_task_t *, stmf_data_buf_t *); 167 168 static int stmf_irport_compare(const void *void_irport1, 169 const void *void_irport2); 170 static stmf_i_remote_port_t *stmf_irport_create(scsi_devid_desc_t *rport_devid); 171 static void stmf_irport_destroy(stmf_i_remote_port_t *irport); 172 static stmf_i_remote_port_t *stmf_irport_register( 173 scsi_devid_desc_t *rport_devid); 174 static stmf_i_remote_port_t *stmf_irport_lookup_locked( 175 scsi_devid_desc_t *rport_devid); 176 static void stmf_irport_deregister(stmf_i_remote_port_t *irport); 177 178 extern struct mod_ops mod_driverops; 179 180 /* =====[ Tunables ]===== */ 181 /* Internal tracing */ 182 volatile int stmf_trace_on = 1; 183 volatile int stmf_trace_buf_size = (1 * 1024 * 1024); 184 /* 185 * The reason default task timeout is 75 is because we want the 186 * host to timeout 1st and mostly host timeout is 60 seconds. 187 */ 188 volatile int stmf_default_task_timeout = 75; 189 /* 190 * Setting this to one means, you are responsible for config load and keeping 191 * things in sync with persistent database. 192 */ 193 volatile int stmf_allow_modunload = 0; 194 195 volatile int stmf_max_nworkers = 256; 196 volatile int stmf_min_nworkers = 4; 197 volatile int stmf_worker_scale_down_delay = 20; 198 199 /* === [ Debugging and fault injection ] === */ 200 #ifdef DEBUG 201 volatile uint32_t stmf_drop_task_counter = 0; 202 volatile uint32_t stmf_drop_buf_counter = 0; 203 204 #endif 205 206 stmf_state_t stmf_state; 207 static stmf_lu_t *dlun0; 208 209 static uint8_t stmf_first_zero[] = 210 { 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 0xff }; 211 static uint8_t stmf_first_one[] = 212 { 0xff, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0 }; 213 214 static kmutex_t trace_buf_lock; 215 static int trace_buf_size; 216 static int trace_buf_curndx; 217 caddr_t stmf_trace_buf; 218 219 static enum { 220 STMF_WORKERS_DISABLED = 0, 221 STMF_WORKERS_ENABLING, 222 STMF_WORKERS_ENABLED 223 } stmf_workers_state = STMF_WORKERS_DISABLED; 224 static int stmf_i_max_nworkers; 225 static int stmf_i_min_nworkers; 226 static int stmf_nworkers_cur; /* # of workers currently running */ 227 static int stmf_nworkers_needed; /* # of workers need to be running */ 228 static int stmf_worker_sel_counter = 0; 229 static uint32_t stmf_cur_ntasks = 0; 230 static clock_t stmf_wm_last = 0; 231 /* 232 * This is equal to stmf_nworkers_cur while we are increasing # workers and 233 * stmf_nworkers_needed while we are decreasing the worker count. 234 */ 235 static int stmf_nworkers_accepting_cmds; 236 static stmf_worker_t *stmf_workers = NULL; 237 static clock_t stmf_worker_mgmt_delay = 2; 238 static clock_t stmf_worker_scale_down_timer = 0; 239 static int stmf_worker_scale_down_qd = 0; 240 241 static struct cb_ops stmf_cb_ops = { 242 stmf_open, /* open */ 243 stmf_close, /* close */ 244 nodev, /* strategy */ 245 nodev, /* print */ 246 nodev, /* dump */ 247 nodev, /* read */ 248 nodev, /* write */ 249 stmf_ioctl, /* ioctl */ 250 nodev, /* devmap */ 251 nodev, /* mmap */ 252 nodev, /* segmap */ 253 nochpoll, /* chpoll */ 254 ddi_prop_op, /* cb_prop_op */ 255 0, /* streamtab */ 256 D_NEW | D_MP, /* cb_flag */ 257 CB_REV, /* rev */ 258 nodev, /* aread */ 259 nodev /* awrite */ 260 }; 261 262 static struct dev_ops stmf_ops = { 263 DEVO_REV, 264 0, 265 stmf_getinfo, 266 nulldev, /* identify */ 267 nulldev, /* probe */ 268 stmf_attach, 269 stmf_detach, 270 nodev, /* reset */ 271 &stmf_cb_ops, 272 NULL, /* bus_ops */ 273 NULL /* power */ 274 }; 275 276 #define STMF_NAME "COMSTAR STMF" 277 #define STMF_MODULE_NAME "stmf" 278 279 static struct modldrv modldrv = { 280 &mod_driverops, 281 STMF_NAME, 282 &stmf_ops 283 }; 284 285 static struct modlinkage modlinkage = { 286 MODREV_1, 287 &modldrv, 288 NULL 289 }; 290 291 int 292 _init(void) 293 { 294 int ret; 295 296 ret = mod_install(&modlinkage); 297 if (ret) 298 return (ret); 299 stmf_trace_buf = kmem_zalloc(stmf_trace_buf_size, KM_SLEEP); 300 trace_buf_size = stmf_trace_buf_size; 301 trace_buf_curndx = 0; 302 mutex_init(&trace_buf_lock, NULL, MUTEX_DRIVER, 0); 303 bzero(&stmf_state, sizeof (stmf_state_t)); 304 /* STMF service is off by default */ 305 stmf_state.stmf_service_running = 0; 306 /* default lu/lport states are online */ 307 stmf_state.stmf_default_lu_state = STMF_STATE_ONLINE; 308 stmf_state.stmf_default_lport_state = STMF_STATE_ONLINE; 309 mutex_init(&stmf_state.stmf_lock, NULL, MUTEX_DRIVER, NULL); 310 cv_init(&stmf_state.stmf_cv, NULL, CV_DRIVER, NULL); 311 stmf_session_counter = (uint64_t)ddi_get_lbolt(); 312 avl_create(&stmf_state.stmf_irportlist, 313 stmf_irport_compare, sizeof (stmf_i_remote_port_t), 314 offsetof(stmf_i_remote_port_t, irport_ln)); 315 stmf_state.stmf_ilport_inst_space = 316 id_space_create("lport-instances", 0, MAX_ILPORT); 317 stmf_state.stmf_irport_inst_space = 318 id_space_create("rport-instances", 0, MAX_IRPORT); 319 stmf_view_init(); 320 stmf_svc_init(); 321 stmf_dlun_init(); 322 return (ret); 323 } 324 325 int 326 _fini(void) 327 { 328 int ret; 329 stmf_i_remote_port_t *irport; 330 void *avl_dest_cookie = NULL; 331 332 if (stmf_state.stmf_service_running) 333 return (EBUSY); 334 if ((!stmf_allow_modunload) && 335 (stmf_state.stmf_config_state != STMF_CONFIG_NONE)) { 336 return (EBUSY); 337 } 338 if (stmf_state.stmf_nlps || stmf_state.stmf_npps) { 339 return (EBUSY); 340 } 341 if (stmf_dlun_fini() != STMF_SUCCESS) 342 return (EBUSY); 343 if (stmf_worker_fini() != STMF_SUCCESS) { 344 stmf_dlun_init(); 345 return (EBUSY); 346 } 347 if (stmf_svc_fini() != STMF_SUCCESS) { 348 stmf_dlun_init(); 349 stmf_worker_init(); 350 return (EBUSY); 351 } 352 353 ret = mod_remove(&modlinkage); 354 if (ret) { 355 stmf_svc_init(); 356 stmf_dlun_init(); 357 stmf_worker_init(); 358 return (ret); 359 } 360 361 stmf_view_clear_config(); 362 363 while ((irport = avl_destroy_nodes(&stmf_state.stmf_irportlist, 364 &avl_dest_cookie)) != NULL) 365 stmf_irport_destroy(irport); 366 avl_destroy(&stmf_state.stmf_irportlist); 367 id_space_destroy(stmf_state.stmf_ilport_inst_space); 368 id_space_destroy(stmf_state.stmf_irport_inst_space); 369 370 kmem_free(stmf_trace_buf, stmf_trace_buf_size); 371 mutex_destroy(&trace_buf_lock); 372 mutex_destroy(&stmf_state.stmf_lock); 373 cv_destroy(&stmf_state.stmf_cv); 374 return (ret); 375 } 376 377 int 378 _info(struct modinfo *modinfop) 379 { 380 return (mod_info(&modlinkage, modinfop)); 381 } 382 383 /* ARGSUSED */ 384 static int 385 stmf_getinfo(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg, void **result) 386 { 387 switch (cmd) { 388 case DDI_INFO_DEVT2DEVINFO: 389 *result = stmf_state.stmf_dip; 390 break; 391 case DDI_INFO_DEVT2INSTANCE: 392 *result = 393 (void *)(uintptr_t)ddi_get_instance(stmf_state.stmf_dip); 394 break; 395 default: 396 return (DDI_FAILURE); 397 } 398 399 return (DDI_SUCCESS); 400 } 401 402 static int 403 stmf_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 404 { 405 switch (cmd) { 406 case DDI_ATTACH: 407 stmf_state.stmf_dip = dip; 408 409 if (ddi_create_minor_node(dip, "admin", S_IFCHR, 0, 410 DDI_NT_STMF, 0) != DDI_SUCCESS) { 411 break; 412 } 413 ddi_report_dev(dip); 414 return (DDI_SUCCESS); 415 } 416 417 return (DDI_FAILURE); 418 } 419 420 static int 421 stmf_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 422 { 423 switch (cmd) { 424 case DDI_DETACH: 425 ddi_remove_minor_node(dip, 0); 426 return (DDI_SUCCESS); 427 } 428 429 return (DDI_FAILURE); 430 } 431 432 /* ARGSUSED */ 433 static int 434 stmf_open(dev_t *devp, int flag, int otype, cred_t *credp) 435 { 436 mutex_enter(&stmf_state.stmf_lock); 437 if (stmf_state.stmf_exclusive_open) { 438 mutex_exit(&stmf_state.stmf_lock); 439 return (EBUSY); 440 } 441 if (flag & FEXCL) { 442 if (stmf_state.stmf_opened) { 443 mutex_exit(&stmf_state.stmf_lock); 444 return (EBUSY); 445 } 446 stmf_state.stmf_exclusive_open = 1; 447 } 448 stmf_state.stmf_opened = 1; 449 mutex_exit(&stmf_state.stmf_lock); 450 return (0); 451 } 452 453 /* ARGSUSED */ 454 static int 455 stmf_close(dev_t dev, int flag, int otype, cred_t *credp) 456 { 457 mutex_enter(&stmf_state.stmf_lock); 458 stmf_state.stmf_opened = 0; 459 if (stmf_state.stmf_exclusive_open && 460 (stmf_state.stmf_config_state != STMF_CONFIG_INIT_DONE)) { 461 stmf_state.stmf_config_state = STMF_CONFIG_NONE; 462 stmf_delete_all_ppds(); 463 stmf_view_clear_config(); 464 stmf_view_init(); 465 } 466 stmf_state.stmf_exclusive_open = 0; 467 mutex_exit(&stmf_state.stmf_lock); 468 return (0); 469 } 470 471 int 472 stmf_copyin_iocdata(intptr_t data, int mode, stmf_iocdata_t **iocd, 473 void **ibuf, void **obuf) 474 { 475 int ret; 476 477 *ibuf = NULL; 478 *obuf = NULL; 479 *iocd = kmem_zalloc(sizeof (stmf_iocdata_t), KM_SLEEP); 480 481 ret = ddi_copyin((void *)data, *iocd, sizeof (stmf_iocdata_t), mode); 482 if (ret) 483 return (EFAULT); 484 if ((*iocd)->stmf_version != STMF_VERSION_1) { 485 ret = EINVAL; 486 goto copyin_iocdata_done; 487 } 488 if ((*iocd)->stmf_ibuf_size) { 489 *ibuf = kmem_zalloc((*iocd)->stmf_ibuf_size, KM_SLEEP); 490 ret = ddi_copyin((void *)((unsigned long)(*iocd)->stmf_ibuf), 491 *ibuf, (*iocd)->stmf_ibuf_size, mode); 492 } 493 if ((*iocd)->stmf_obuf_size) 494 *obuf = kmem_zalloc((*iocd)->stmf_obuf_size, KM_SLEEP); 495 496 if (ret == 0) 497 return (0); 498 ret = EFAULT; 499 copyin_iocdata_done:; 500 if (*obuf) { 501 kmem_free(*obuf, (*iocd)->stmf_obuf_size); 502 *obuf = NULL; 503 } 504 if (*ibuf) { 505 kmem_free(*ibuf, (*iocd)->stmf_ibuf_size); 506 *ibuf = NULL; 507 } 508 kmem_free(*iocd, sizeof (stmf_iocdata_t)); 509 return (ret); 510 } 511 512 int 513 stmf_copyout_iocdata(intptr_t data, int mode, stmf_iocdata_t *iocd, void *obuf) 514 { 515 int ret; 516 517 if (iocd->stmf_obuf_size) { 518 ret = ddi_copyout(obuf, (void *)(unsigned long)iocd->stmf_obuf, 519 iocd->stmf_obuf_size, mode); 520 if (ret) 521 return (EFAULT); 522 } 523 ret = ddi_copyout(iocd, (void *)data, sizeof (stmf_iocdata_t), mode); 524 if (ret) 525 return (EFAULT); 526 return (0); 527 } 528 529 /* ARGSUSED */ 530 static int 531 stmf_ioctl(dev_t dev, int cmd, intptr_t data, int mode, 532 cred_t *credp, int *rval) 533 { 534 stmf_iocdata_t *iocd; 535 void *ibuf = NULL, *obuf = NULL; 536 slist_lu_t *luid_list; 537 slist_target_port_t *lportid_list; 538 stmf_i_lu_t *ilu; 539 stmf_i_local_port_t *ilport; 540 stmf_i_scsi_session_t *iss; 541 slist_scsi_session_t *iss_list; 542 sioc_lu_props_t *lup; 543 sioc_target_port_props_t *lportp; 544 stmf_ppioctl_data_t *ppi, *ppi_out = NULL; 545 uint64_t *ppi_token = NULL; 546 uint8_t *p_id, *id; 547 stmf_state_desc_t *std; 548 stmf_status_t ctl_ret; 549 stmf_state_change_info_t ssi; 550 int ret = 0; 551 uint32_t n; 552 int i; 553 stmf_group_op_data_t *grp_entry; 554 stmf_group_name_t *grpname; 555 stmf_view_op_entry_t *ve; 556 stmf_id_type_t idtype; 557 stmf_id_data_t *id_entry; 558 stmf_id_list_t *id_list; 559 stmf_view_entry_t *view_entry; 560 stmf_set_props_t *stmf_set_props; 561 uint32_t veid; 562 if ((cmd & 0xff000000) != STMF_IOCTL) { 563 return (ENOTTY); 564 } 565 566 if (drv_priv(credp) != 0) { 567 return (EPERM); 568 } 569 570 ret = stmf_copyin_iocdata(data, mode, &iocd, &ibuf, &obuf); 571 if (ret) 572 return (ret); 573 iocd->stmf_error = 0; 574 575 switch (cmd) { 576 case STMF_IOCTL_LU_LIST: 577 /* retrieves both registered/unregistered */ 578 mutex_enter(&stmf_state.stmf_lock); 579 id_list = &stmf_state.stmf_luid_list; 580 n = min(id_list->id_count, 581 (iocd->stmf_obuf_size)/sizeof (slist_lu_t)); 582 iocd->stmf_obuf_max_nentries = id_list->id_count; 583 luid_list = (slist_lu_t *)obuf; 584 id_entry = id_list->idl_head; 585 for (i = 0; i < n; i++) { 586 bcopy(id_entry->id_data, luid_list[i].lu_guid, 16); 587 id_entry = id_entry->id_next; 588 } 589 590 n = iocd->stmf_obuf_size/sizeof (slist_lu_t); 591 for (ilu = stmf_state.stmf_ilulist; ilu; ilu = ilu->ilu_next) { 592 id = (uint8_t *)ilu->ilu_lu->lu_id; 593 if (stmf_lookup_id(id_list, 16, id + 4) == NULL) { 594 iocd->stmf_obuf_max_nentries++; 595 if (i < n) { 596 bcopy(id + 4, luid_list[i].lu_guid, 597 sizeof (slist_lu_t)); 598 i++; 599 } 600 } 601 } 602 iocd->stmf_obuf_nentries = i; 603 mutex_exit(&stmf_state.stmf_lock); 604 break; 605 606 case STMF_IOCTL_REG_LU_LIST: 607 mutex_enter(&stmf_state.stmf_lock); 608 iocd->stmf_obuf_max_nentries = stmf_state.stmf_nlus; 609 n = min(stmf_state.stmf_nlus, 610 (iocd->stmf_obuf_size)/sizeof (slist_lu_t)); 611 iocd->stmf_obuf_nentries = n; 612 ilu = stmf_state.stmf_ilulist; 613 luid_list = (slist_lu_t *)obuf; 614 for (i = 0; i < n; i++) { 615 uint8_t *id; 616 id = (uint8_t *)ilu->ilu_lu->lu_id; 617 bcopy(id + 4, luid_list[i].lu_guid, 16); 618 ilu = ilu->ilu_next; 619 } 620 mutex_exit(&stmf_state.stmf_lock); 621 break; 622 623 case STMF_IOCTL_VE_LU_LIST: 624 mutex_enter(&stmf_state.stmf_lock); 625 id_list = &stmf_state.stmf_luid_list; 626 n = min(id_list->id_count, 627 (iocd->stmf_obuf_size)/sizeof (slist_lu_t)); 628 iocd->stmf_obuf_max_nentries = id_list->id_count; 629 iocd->stmf_obuf_nentries = n; 630 luid_list = (slist_lu_t *)obuf; 631 id_entry = id_list->idl_head; 632 for (i = 0; i < n; i++) { 633 bcopy(id_entry->id_data, luid_list[i].lu_guid, 16); 634 id_entry = id_entry->id_next; 635 } 636 mutex_exit(&stmf_state.stmf_lock); 637 break; 638 639 case STMF_IOCTL_TARGET_PORT_LIST: 640 mutex_enter(&stmf_state.stmf_lock); 641 iocd->stmf_obuf_max_nentries = stmf_state.stmf_nlports; 642 n = min(stmf_state.stmf_nlports, 643 (iocd->stmf_obuf_size)/sizeof (slist_target_port_t)); 644 iocd->stmf_obuf_nentries = n; 645 ilport = stmf_state.stmf_ilportlist; 646 lportid_list = (slist_target_port_t *)obuf; 647 for (i = 0; i < n; i++) { 648 uint8_t *id; 649 id = (uint8_t *)ilport->ilport_lport->lport_id; 650 bcopy(id, lportid_list[i].target, id[3] + 4); 651 ilport = ilport->ilport_next; 652 } 653 mutex_exit(&stmf_state.stmf_lock); 654 break; 655 656 case STMF_IOCTL_SESSION_LIST: 657 p_id = (uint8_t *)ibuf; 658 if ((p_id == NULL) || (iocd->stmf_ibuf_size < 4) || 659 (iocd->stmf_ibuf_size < (p_id[3] + 4))) { 660 ret = EINVAL; 661 break; 662 } 663 mutex_enter(&stmf_state.stmf_lock); 664 for (ilport = stmf_state.stmf_ilportlist; ilport; ilport = 665 ilport->ilport_next) { 666 uint8_t *id; 667 id = (uint8_t *)ilport->ilport_lport->lport_id; 668 if ((p_id[3] == id[3]) && 669 (bcmp(p_id + 4, id + 4, id[3]) == 0)) { 670 break; 671 } 672 } 673 if (ilport == NULL) { 674 mutex_exit(&stmf_state.stmf_lock); 675 ret = ENOENT; 676 break; 677 } 678 iocd->stmf_obuf_max_nentries = ilport->ilport_nsessions; 679 n = min(ilport->ilport_nsessions, 680 (iocd->stmf_obuf_size)/sizeof (slist_scsi_session_t)); 681 iocd->stmf_obuf_nentries = n; 682 iss = ilport->ilport_ss_list; 683 iss_list = (slist_scsi_session_t *)obuf; 684 for (i = 0; i < n; i++) { 685 uint8_t *id; 686 id = (uint8_t *)iss->iss_ss->ss_rport_id; 687 bcopy(id, iss_list[i].initiator, id[3] + 4); 688 iss_list[i].creation_time = (uint32_t) 689 iss->iss_creation_time; 690 if (iss->iss_ss->ss_rport_alias) { 691 (void) strncpy(iss_list[i].alias, 692 iss->iss_ss->ss_rport_alias, 255); 693 iss_list[i].alias[255] = 0; 694 } else { 695 iss_list[i].alias[0] = 0; 696 } 697 iss = iss->iss_next; 698 } 699 mutex_exit(&stmf_state.stmf_lock); 700 break; 701 702 case STMF_IOCTL_GET_LU_PROPERTIES: 703 p_id = (uint8_t *)ibuf; 704 if ((iocd->stmf_ibuf_size < 16) || 705 (iocd->stmf_obuf_size < sizeof (sioc_lu_props_t)) || 706 (p_id[0] == 0)) { 707 ret = EINVAL; 708 break; 709 } 710 mutex_enter(&stmf_state.stmf_lock); 711 for (ilu = stmf_state.stmf_ilulist; ilu; ilu = ilu->ilu_next) { 712 if (bcmp(p_id, ilu->ilu_lu->lu_id->ident, 16) == 0) 713 break; 714 } 715 if (ilu == NULL) { 716 mutex_exit(&stmf_state.stmf_lock); 717 ret = ENOENT; 718 break; 719 } 720 lup = (sioc_lu_props_t *)obuf; 721 bcopy(ilu->ilu_lu->lu_id->ident, lup->lu_guid, 16); 722 lup->lu_state = ilu->ilu_state & 0x0f; 723 lup->lu_present = 1; /* XXX */ 724 (void) strncpy(lup->lu_provider_name, 725 ilu->ilu_lu->lu_lp->lp_name, 255); 726 lup->lu_provider_name[254] = 0; 727 if (ilu->ilu_lu->lu_alias) { 728 (void) strncpy(lup->lu_alias, 729 ilu->ilu_lu->lu_alias, 255); 730 lup->lu_alias[255] = 0; 731 } else { 732 lup->lu_alias[0] = 0; 733 } 734 mutex_exit(&stmf_state.stmf_lock); 735 break; 736 737 case STMF_IOCTL_GET_TARGET_PORT_PROPERTIES: 738 p_id = (uint8_t *)ibuf; 739 if ((p_id == NULL) || 740 (iocd->stmf_ibuf_size < (p_id[3] + 4)) || 741 (iocd->stmf_obuf_size < 742 sizeof (sioc_target_port_props_t))) { 743 ret = EINVAL; 744 break; 745 } 746 mutex_enter(&stmf_state.stmf_lock); 747 for (ilport = stmf_state.stmf_ilportlist; ilport; 748 ilport = ilport->ilport_next) { 749 uint8_t *id; 750 id = (uint8_t *)ilport->ilport_lport->lport_id; 751 if ((p_id[3] == id[3]) && 752 (bcmp(p_id+4, id+4, id[3]) == 0)) 753 break; 754 } 755 if (ilport == NULL) { 756 mutex_exit(&stmf_state.stmf_lock); 757 ret = ENOENT; 758 break; 759 } 760 lportp = (sioc_target_port_props_t *)obuf; 761 bcopy(ilport->ilport_lport->lport_id, lportp->tgt_id, 762 ilport->ilport_lport->lport_id->ident_length + 4); 763 lportp->tgt_state = ilport->ilport_state & 0x0f; 764 lportp->tgt_present = 1; /* XXX */ 765 (void) strncpy(lportp->tgt_provider_name, 766 ilport->ilport_lport->lport_pp->pp_name, 255); 767 lportp->tgt_provider_name[254] = 0; 768 if (ilport->ilport_lport->lport_alias) { 769 (void) strncpy(lportp->tgt_alias, 770 ilport->ilport_lport->lport_alias, 255); 771 lportp->tgt_alias[255] = 0; 772 } else { 773 lportp->tgt_alias[0] = 0; 774 } 775 mutex_exit(&stmf_state.stmf_lock); 776 break; 777 778 case STMF_IOCTL_SET_STMF_STATE: 779 if ((ibuf == NULL) || 780 (iocd->stmf_ibuf_size < sizeof (stmf_state_desc_t))) { 781 ret = EINVAL; 782 break; 783 } 784 ret = stmf_set_stmf_state((stmf_state_desc_t *)ibuf); 785 break; 786 787 case STMF_IOCTL_GET_STMF_STATE: 788 if ((obuf == NULL) || 789 (iocd->stmf_obuf_size < sizeof (stmf_state_desc_t))) { 790 ret = EINVAL; 791 break; 792 } 793 ret = stmf_get_stmf_state((stmf_state_desc_t *)obuf); 794 break; 795 796 case STMF_IOCTL_SET_ALUA_STATE: 797 if ((ibuf == NULL) || 798 (iocd->stmf_ibuf_size < sizeof (stmf_alua_state_desc_t))) { 799 ret = EINVAL; 800 break; 801 } 802 ret = stmf_set_alua_state((stmf_alua_state_desc_t *)ibuf); 803 break; 804 805 case STMF_IOCTL_GET_ALUA_STATE: 806 if ((obuf == NULL) || 807 (iocd->stmf_obuf_size < sizeof (stmf_alua_state_desc_t))) { 808 ret = EINVAL; 809 break; 810 } 811 stmf_get_alua_state((stmf_alua_state_desc_t *)obuf); 812 break; 813 814 case STMF_IOCTL_SET_LU_STATE: 815 ssi.st_rflags = STMF_RFLAG_USER_REQUEST; 816 ssi.st_additional_info = NULL; 817 std = (stmf_state_desc_t *)ibuf; 818 if ((ibuf == NULL) || 819 (iocd->stmf_ibuf_size < sizeof (stmf_state_desc_t))) { 820 ret = EINVAL; 821 break; 822 } 823 p_id = std->ident; 824 mutex_enter(&stmf_state.stmf_lock); 825 if (stmf_state.stmf_inventory_locked) { 826 mutex_exit(&stmf_state.stmf_lock); 827 ret = EBUSY; 828 break; 829 } 830 for (ilu = stmf_state.stmf_ilulist; ilu; ilu = ilu->ilu_next) { 831 if (bcmp(p_id, ilu->ilu_lu->lu_id->ident, 16) == 0) 832 break; 833 } 834 if (ilu == NULL) { 835 mutex_exit(&stmf_state.stmf_lock); 836 ret = ENOENT; 837 break; 838 } 839 stmf_state.stmf_inventory_locked = 1; 840 mutex_exit(&stmf_state.stmf_lock); 841 cmd = (std->state == STMF_STATE_ONLINE) ? STMF_CMD_LU_ONLINE : 842 STMF_CMD_LU_OFFLINE; 843 ctl_ret = stmf_ctl(cmd, (void *)ilu->ilu_lu, &ssi); 844 if (ctl_ret == STMF_ALREADY) 845 ret = 0; 846 else if (ctl_ret == STMF_BUSY) 847 ret = EBUSY; 848 else if (ctl_ret != STMF_SUCCESS) 849 ret = EIO; 850 mutex_enter(&stmf_state.stmf_lock); 851 stmf_state.stmf_inventory_locked = 0; 852 mutex_exit(&stmf_state.stmf_lock); 853 break; 854 855 case STMF_IOCTL_SET_STMF_PROPS: 856 if ((ibuf == NULL) || 857 (iocd->stmf_ibuf_size < sizeof (stmf_set_props_t))) { 858 ret = EINVAL; 859 break; 860 } 861 stmf_set_props = (stmf_set_props_t *)ibuf; 862 mutex_enter(&stmf_state.stmf_lock); 863 if ((stmf_set_props->default_lu_state_value == 864 STMF_STATE_OFFLINE) || 865 (stmf_set_props->default_lu_state_value == 866 STMF_STATE_ONLINE)) { 867 stmf_state.stmf_default_lu_state = 868 stmf_set_props->default_lu_state_value; 869 } 870 if ((stmf_set_props->default_target_state_value == 871 STMF_STATE_OFFLINE) || 872 (stmf_set_props->default_target_state_value == 873 STMF_STATE_ONLINE)) { 874 stmf_state.stmf_default_lport_state = 875 stmf_set_props->default_target_state_value; 876 } 877 878 mutex_exit(&stmf_state.stmf_lock); 879 break; 880 881 case STMF_IOCTL_SET_TARGET_PORT_STATE: 882 ssi.st_rflags = STMF_RFLAG_USER_REQUEST; 883 ssi.st_additional_info = NULL; 884 std = (stmf_state_desc_t *)ibuf; 885 if ((ibuf == NULL) || 886 (iocd->stmf_ibuf_size < sizeof (stmf_state_desc_t))) { 887 ret = EINVAL; 888 break; 889 } 890 p_id = std->ident; 891 mutex_enter(&stmf_state.stmf_lock); 892 if (stmf_state.stmf_inventory_locked) { 893 mutex_exit(&stmf_state.stmf_lock); 894 ret = EBUSY; 895 break; 896 } 897 for (ilport = stmf_state.stmf_ilportlist; ilport; 898 ilport = ilport->ilport_next) { 899 uint8_t *id; 900 id = (uint8_t *)ilport->ilport_lport->lport_id; 901 if ((id[3] == p_id[3]) && 902 (bcmp(id+4, p_id+4, id[3]) == 0)) { 903 break; 904 } 905 } 906 if (ilport == NULL) { 907 mutex_exit(&stmf_state.stmf_lock); 908 ret = ENOENT; 909 break; 910 } 911 stmf_state.stmf_inventory_locked = 1; 912 mutex_exit(&stmf_state.stmf_lock); 913 cmd = (std->state == STMF_STATE_ONLINE) ? 914 STMF_CMD_LPORT_ONLINE : STMF_CMD_LPORT_OFFLINE; 915 ctl_ret = stmf_ctl(cmd, (void *)ilport->ilport_lport, &ssi); 916 if (ctl_ret == STMF_ALREADY) 917 ret = 0; 918 else if (ctl_ret == STMF_BUSY) 919 ret = EBUSY; 920 else if (ctl_ret != STMF_SUCCESS) 921 ret = EIO; 922 mutex_enter(&stmf_state.stmf_lock); 923 stmf_state.stmf_inventory_locked = 0; 924 mutex_exit(&stmf_state.stmf_lock); 925 break; 926 927 case STMF_IOCTL_ADD_HG_ENTRY: 928 idtype = STMF_ID_TYPE_HOST; 929 /* FALLTHROUGH */ 930 case STMF_IOCTL_ADD_TG_ENTRY: 931 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) { 932 ret = EACCES; 933 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT; 934 break; 935 } 936 if (cmd == STMF_IOCTL_ADD_TG_ENTRY) { 937 idtype = STMF_ID_TYPE_TARGET; 938 } 939 grp_entry = (stmf_group_op_data_t *)ibuf; 940 if ((ibuf == NULL) || 941 (iocd->stmf_ibuf_size < sizeof (stmf_group_op_data_t))) { 942 ret = EINVAL; 943 break; 944 } 945 if (grp_entry->group.name[0] == '*') { 946 ret = EINVAL; 947 break; /* not allowed */ 948 } 949 mutex_enter(&stmf_state.stmf_lock); 950 ret = stmf_add_group_member(grp_entry->group.name, 951 grp_entry->group.name_size, 952 grp_entry->ident + 4, 953 grp_entry->ident[3], 954 idtype, 955 &iocd->stmf_error); 956 mutex_exit(&stmf_state.stmf_lock); 957 break; 958 case STMF_IOCTL_REMOVE_HG_ENTRY: 959 idtype = STMF_ID_TYPE_HOST; 960 /* FALLTHROUGH */ 961 case STMF_IOCTL_REMOVE_TG_ENTRY: 962 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) { 963 ret = EACCES; 964 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT; 965 break; 966 } 967 if (cmd == STMF_IOCTL_REMOVE_TG_ENTRY) { 968 idtype = STMF_ID_TYPE_TARGET; 969 } 970 grp_entry = (stmf_group_op_data_t *)ibuf; 971 if ((ibuf == NULL) || 972 (iocd->stmf_ibuf_size < sizeof (stmf_group_op_data_t))) { 973 ret = EINVAL; 974 break; 975 } 976 if (grp_entry->group.name[0] == '*') { 977 ret = EINVAL; 978 break; /* not allowed */ 979 } 980 mutex_enter(&stmf_state.stmf_lock); 981 ret = stmf_remove_group_member(grp_entry->group.name, 982 grp_entry->group.name_size, 983 grp_entry->ident + 4, 984 grp_entry->ident[3], 985 idtype, 986 &iocd->stmf_error); 987 mutex_exit(&stmf_state.stmf_lock); 988 break; 989 case STMF_IOCTL_CREATE_HOST_GROUP: 990 idtype = STMF_ID_TYPE_HOST_GROUP; 991 /* FALLTHROUGH */ 992 case STMF_IOCTL_CREATE_TARGET_GROUP: 993 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) { 994 ret = EACCES; 995 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT; 996 break; 997 } 998 grpname = (stmf_group_name_t *)ibuf; 999 1000 if (cmd == STMF_IOCTL_CREATE_TARGET_GROUP) 1001 idtype = STMF_ID_TYPE_TARGET_GROUP; 1002 if ((ibuf == NULL) || 1003 (iocd->stmf_ibuf_size < sizeof (stmf_group_name_t))) { 1004 ret = EINVAL; 1005 break; 1006 } 1007 if (grpname->name[0] == '*') { 1008 ret = EINVAL; 1009 break; /* not allowed */ 1010 } 1011 mutex_enter(&stmf_state.stmf_lock); 1012 ret = stmf_add_group(grpname->name, 1013 grpname->name_size, idtype, &iocd->stmf_error); 1014 mutex_exit(&stmf_state.stmf_lock); 1015 break; 1016 case STMF_IOCTL_REMOVE_HOST_GROUP: 1017 idtype = STMF_ID_TYPE_HOST_GROUP; 1018 /* FALLTHROUGH */ 1019 case STMF_IOCTL_REMOVE_TARGET_GROUP: 1020 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) { 1021 ret = EACCES; 1022 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT; 1023 break; 1024 } 1025 grpname = (stmf_group_name_t *)ibuf; 1026 if (cmd == STMF_IOCTL_REMOVE_TARGET_GROUP) 1027 idtype = STMF_ID_TYPE_TARGET_GROUP; 1028 if ((ibuf == NULL) || 1029 (iocd->stmf_ibuf_size < sizeof (stmf_group_name_t))) { 1030 ret = EINVAL; 1031 break; 1032 } 1033 if (grpname->name[0] == '*') { 1034 ret = EINVAL; 1035 break; /* not allowed */ 1036 } 1037 mutex_enter(&stmf_state.stmf_lock); 1038 ret = stmf_remove_group(grpname->name, 1039 grpname->name_size, idtype, &iocd->stmf_error); 1040 mutex_exit(&stmf_state.stmf_lock); 1041 break; 1042 case STMF_IOCTL_VALIDATE_VIEW: 1043 case STMF_IOCTL_ADD_VIEW_ENTRY: 1044 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) { 1045 ret = EACCES; 1046 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT; 1047 break; 1048 } 1049 ve = (stmf_view_op_entry_t *)ibuf; 1050 if ((ibuf == NULL) || 1051 (iocd->stmf_ibuf_size < sizeof (stmf_view_op_entry_t))) { 1052 ret = EINVAL; 1053 break; 1054 } 1055 if (!ve->ve_lu_number_valid) 1056 ve->ve_lu_nbr[2] = 0xFF; 1057 if (ve->ve_all_hosts) { 1058 ve->ve_host_group.name[0] = '*'; 1059 ve->ve_host_group.name_size = 1; 1060 } 1061 if (ve->ve_all_targets) { 1062 ve->ve_target_group.name[0] = '*'; 1063 ve->ve_target_group.name_size = 1; 1064 } 1065 if (ve->ve_ndx_valid) 1066 veid = ve->ve_ndx; 1067 else 1068 veid = 0xffffffff; 1069 mutex_enter(&stmf_state.stmf_lock); 1070 if (cmd == STMF_IOCTL_ADD_VIEW_ENTRY) { 1071 ret = stmf_add_ve(ve->ve_host_group.name, 1072 ve->ve_host_group.name_size, 1073 ve->ve_target_group.name, 1074 ve->ve_target_group.name_size, 1075 ve->ve_guid, 1076 &veid, 1077 ve->ve_lu_nbr, 1078 &iocd->stmf_error); 1079 } else { /* STMF_IOCTL_VALIDATE_VIEW */ 1080 ret = stmf_validate_lun_ve(ve->ve_host_group.name, 1081 ve->ve_host_group.name_size, 1082 ve->ve_target_group.name, 1083 ve->ve_target_group.name_size, 1084 ve->ve_lu_nbr, 1085 &iocd->stmf_error); 1086 } 1087 mutex_exit(&stmf_state.stmf_lock); 1088 if (ret == 0 && 1089 (!ve->ve_ndx_valid || !ve->ve_lu_number_valid) && 1090 iocd->stmf_obuf_size >= sizeof (stmf_view_op_entry_t)) { 1091 stmf_view_op_entry_t *ve_ret = 1092 (stmf_view_op_entry_t *)obuf; 1093 iocd->stmf_obuf_nentries = 1; 1094 iocd->stmf_obuf_max_nentries = 1; 1095 if (!ve->ve_ndx_valid) { 1096 ve_ret->ve_ndx = veid; 1097 ve_ret->ve_ndx_valid = 1; 1098 } 1099 if (!ve->ve_lu_number_valid) { 1100 ve_ret->ve_lu_number_valid = 1; 1101 bcopy(ve->ve_lu_nbr, ve_ret->ve_lu_nbr, 8); 1102 } 1103 } 1104 break; 1105 case STMF_IOCTL_REMOVE_VIEW_ENTRY: 1106 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) { 1107 ret = EACCES; 1108 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT; 1109 break; 1110 } 1111 ve = (stmf_view_op_entry_t *)ibuf; 1112 if ((ibuf == NULL) || 1113 (iocd->stmf_ibuf_size < sizeof (stmf_view_op_entry_t))) { 1114 ret = EINVAL; 1115 break; 1116 } 1117 if (!ve->ve_ndx_valid) { 1118 ret = EINVAL; 1119 break; 1120 } 1121 mutex_enter(&stmf_state.stmf_lock); 1122 ret = stmf_remove_ve_by_id(ve->ve_guid, ve->ve_ndx, 1123 &iocd->stmf_error); 1124 mutex_exit(&stmf_state.stmf_lock); 1125 break; 1126 case STMF_IOCTL_GET_HG_LIST: 1127 id_list = &stmf_state.stmf_hg_list; 1128 /* FALLTHROUGH */ 1129 case STMF_IOCTL_GET_TG_LIST: 1130 if (cmd == STMF_IOCTL_GET_TG_LIST) 1131 id_list = &stmf_state.stmf_tg_list; 1132 mutex_enter(&stmf_state.stmf_lock); 1133 iocd->stmf_obuf_max_nentries = id_list->id_count; 1134 n = min(id_list->id_count, 1135 (iocd->stmf_obuf_size)/sizeof (stmf_group_name_t)); 1136 iocd->stmf_obuf_nentries = n; 1137 id_entry = id_list->idl_head; 1138 grpname = (stmf_group_name_t *)obuf; 1139 for (i = 0; i < n; i++) { 1140 if (id_entry->id_data[0] == '*') { 1141 if (iocd->stmf_obuf_nentries > 0) { 1142 iocd->stmf_obuf_nentries--; 1143 } 1144 id_entry = id_entry->id_next; 1145 continue; 1146 } 1147 grpname->name_size = id_entry->id_data_size; 1148 bcopy(id_entry->id_data, grpname->name, 1149 id_entry->id_data_size); 1150 grpname++; 1151 id_entry = id_entry->id_next; 1152 } 1153 mutex_exit(&stmf_state.stmf_lock); 1154 break; 1155 case STMF_IOCTL_GET_HG_ENTRIES: 1156 id_list = &stmf_state.stmf_hg_list; 1157 /* FALLTHROUGH */ 1158 case STMF_IOCTL_GET_TG_ENTRIES: 1159 grpname = (stmf_group_name_t *)ibuf; 1160 if ((ibuf == NULL) || 1161 (iocd->stmf_ibuf_size < sizeof (stmf_group_name_t))) { 1162 ret = EINVAL; 1163 break; 1164 } 1165 if (cmd == STMF_IOCTL_GET_TG_ENTRIES) { 1166 id_list = &stmf_state.stmf_tg_list; 1167 } 1168 mutex_enter(&stmf_state.stmf_lock); 1169 id_entry = stmf_lookup_id(id_list, grpname->name_size, 1170 grpname->name); 1171 if (!id_entry) 1172 ret = ENODEV; 1173 else { 1174 stmf_ge_ident_t *grp_entry; 1175 id_list = (stmf_id_list_t *)id_entry->id_impl_specific; 1176 iocd->stmf_obuf_max_nentries = id_list->id_count; 1177 n = min(id_list->id_count, 1178 iocd->stmf_obuf_size/sizeof (stmf_ge_ident_t)); 1179 iocd->stmf_obuf_nentries = n; 1180 id_entry = id_list->idl_head; 1181 grp_entry = (stmf_ge_ident_t *)obuf; 1182 for (i = 0; i < n; i++) { 1183 bcopy(id_entry->id_data, grp_entry->ident, 1184 id_entry->id_data_size); 1185 grp_entry->ident_size = id_entry->id_data_size; 1186 id_entry = id_entry->id_next; 1187 grp_entry++; 1188 } 1189 } 1190 mutex_exit(&stmf_state.stmf_lock); 1191 break; 1192 1193 case STMF_IOCTL_GET_VE_LIST: 1194 n = iocd->stmf_obuf_size/sizeof (stmf_view_op_entry_t); 1195 mutex_enter(&stmf_state.stmf_lock); 1196 ve = (stmf_view_op_entry_t *)obuf; 1197 for (id_entry = stmf_state.stmf_luid_list.idl_head; 1198 id_entry; id_entry = id_entry->id_next) { 1199 for (view_entry = (stmf_view_entry_t *) 1200 id_entry->id_impl_specific; view_entry; 1201 view_entry = view_entry->ve_next) { 1202 iocd->stmf_obuf_max_nentries++; 1203 if (iocd->stmf_obuf_nentries >= n) 1204 continue; 1205 ve->ve_ndx_valid = 1; 1206 ve->ve_ndx = view_entry->ve_id; 1207 ve->ve_lu_number_valid = 1; 1208 bcopy(view_entry->ve_lun, ve->ve_lu_nbr, 8); 1209 bcopy(view_entry->ve_luid->id_data, ve->ve_guid, 1210 view_entry->ve_luid->id_data_size); 1211 if (view_entry->ve_hg->id_data[0] == '*') { 1212 ve->ve_all_hosts = 1; 1213 } else { 1214 bcopy(view_entry->ve_hg->id_data, 1215 ve->ve_host_group.name, 1216 view_entry->ve_hg->id_data_size); 1217 ve->ve_host_group.name_size = 1218 view_entry->ve_hg->id_data_size; 1219 } 1220 1221 if (view_entry->ve_tg->id_data[0] == '*') { 1222 ve->ve_all_targets = 1; 1223 } else { 1224 bcopy(view_entry->ve_tg->id_data, 1225 ve->ve_target_group.name, 1226 view_entry->ve_tg->id_data_size); 1227 ve->ve_target_group.name_size = 1228 view_entry->ve_tg->id_data_size; 1229 } 1230 ve++; 1231 iocd->stmf_obuf_nentries++; 1232 } 1233 } 1234 mutex_exit(&stmf_state.stmf_lock); 1235 break; 1236 1237 case STMF_IOCTL_LU_VE_LIST: 1238 p_id = (uint8_t *)ibuf; 1239 if ((iocd->stmf_ibuf_size != 16) || 1240 (iocd->stmf_obuf_size < sizeof (stmf_view_op_entry_t))) { 1241 ret = EINVAL; 1242 break; 1243 } 1244 1245 n = iocd->stmf_obuf_size/sizeof (stmf_view_op_entry_t); 1246 mutex_enter(&stmf_state.stmf_lock); 1247 ve = (stmf_view_op_entry_t *)obuf; 1248 for (id_entry = stmf_state.stmf_luid_list.idl_head; 1249 id_entry; id_entry = id_entry->id_next) { 1250 if (bcmp(id_entry->id_data, p_id, 16) != 0) 1251 continue; 1252 for (view_entry = (stmf_view_entry_t *) 1253 id_entry->id_impl_specific; view_entry; 1254 view_entry = view_entry->ve_next) { 1255 iocd->stmf_obuf_max_nentries++; 1256 if (iocd->stmf_obuf_nentries >= n) 1257 continue; 1258 ve->ve_ndx_valid = 1; 1259 ve->ve_ndx = view_entry->ve_id; 1260 ve->ve_lu_number_valid = 1; 1261 bcopy(view_entry->ve_lun, ve->ve_lu_nbr, 8); 1262 bcopy(view_entry->ve_luid->id_data, ve->ve_guid, 1263 view_entry->ve_luid->id_data_size); 1264 if (view_entry->ve_hg->id_data[0] == '*') { 1265 ve->ve_all_hosts = 1; 1266 } else { 1267 bcopy(view_entry->ve_hg->id_data, 1268 ve->ve_host_group.name, 1269 view_entry->ve_hg->id_data_size); 1270 ve->ve_host_group.name_size = 1271 view_entry->ve_hg->id_data_size; 1272 } 1273 1274 if (view_entry->ve_tg->id_data[0] == '*') { 1275 ve->ve_all_targets = 1; 1276 } else { 1277 bcopy(view_entry->ve_tg->id_data, 1278 ve->ve_target_group.name, 1279 view_entry->ve_tg->id_data_size); 1280 ve->ve_target_group.name_size = 1281 view_entry->ve_tg->id_data_size; 1282 } 1283 ve++; 1284 iocd->stmf_obuf_nentries++; 1285 } 1286 break; 1287 } 1288 mutex_exit(&stmf_state.stmf_lock); 1289 break; 1290 1291 case STMF_IOCTL_LOAD_PP_DATA: 1292 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) { 1293 ret = EACCES; 1294 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT; 1295 break; 1296 } 1297 ppi = (stmf_ppioctl_data_t *)ibuf; 1298 if ((ppi == NULL) || 1299 (iocd->stmf_ibuf_size < sizeof (stmf_ppioctl_data_t))) { 1300 ret = EINVAL; 1301 break; 1302 } 1303 /* returned token */ 1304 ppi_token = (uint64_t *)obuf; 1305 if ((ppi_token == NULL) || 1306 (iocd->stmf_obuf_size < sizeof (uint64_t))) { 1307 ret = EINVAL; 1308 break; 1309 } 1310 ret = stmf_load_ppd_ioctl(ppi, ppi_token, &iocd->stmf_error); 1311 break; 1312 1313 case STMF_IOCTL_GET_PP_DATA: 1314 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) { 1315 ret = EACCES; 1316 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT; 1317 break; 1318 } 1319 ppi = (stmf_ppioctl_data_t *)ibuf; 1320 if (ppi == NULL || 1321 (iocd->stmf_ibuf_size < sizeof (stmf_ppioctl_data_t))) { 1322 ret = EINVAL; 1323 break; 1324 } 1325 ppi_out = (stmf_ppioctl_data_t *)obuf; 1326 if ((ppi_out == NULL) || 1327 (iocd->stmf_obuf_size < sizeof (stmf_ppioctl_data_t))) { 1328 ret = EINVAL; 1329 break; 1330 } 1331 ret = stmf_get_ppd_ioctl(ppi, ppi_out, &iocd->stmf_error); 1332 break; 1333 1334 case STMF_IOCTL_CLEAR_PP_DATA: 1335 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) { 1336 ret = EACCES; 1337 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT; 1338 break; 1339 } 1340 ppi = (stmf_ppioctl_data_t *)ibuf; 1341 if ((ppi == NULL) || 1342 (iocd->stmf_ibuf_size < sizeof (stmf_ppioctl_data_t))) { 1343 ret = EINVAL; 1344 break; 1345 } 1346 ret = stmf_delete_ppd_ioctl(ppi); 1347 break; 1348 1349 case STMF_IOCTL_CLEAR_TRACE: 1350 stmf_trace_clear(); 1351 break; 1352 1353 case STMF_IOCTL_ADD_TRACE: 1354 if (iocd->stmf_ibuf_size && ibuf) { 1355 ((uint8_t *)ibuf)[iocd->stmf_ibuf_size - 1] = 0; 1356 stmf_trace("\nstradm", "%s\n", ibuf); 1357 } 1358 break; 1359 1360 case STMF_IOCTL_GET_TRACE_POSITION: 1361 if (obuf && (iocd->stmf_obuf_size > 3)) { 1362 mutex_enter(&trace_buf_lock); 1363 *((int *)obuf) = trace_buf_curndx; 1364 mutex_exit(&trace_buf_lock); 1365 } else { 1366 ret = EINVAL; 1367 } 1368 break; 1369 1370 case STMF_IOCTL_GET_TRACE: 1371 if ((iocd->stmf_obuf_size == 0) || (iocd->stmf_ibuf_size < 4)) { 1372 ret = EINVAL; 1373 break; 1374 } 1375 i = *((int *)ibuf); 1376 if ((i > trace_buf_size) || ((i + iocd->stmf_obuf_size) > 1377 trace_buf_size)) { 1378 ret = EINVAL; 1379 break; 1380 } 1381 mutex_enter(&trace_buf_lock); 1382 bcopy(stmf_trace_buf + i, obuf, iocd->stmf_obuf_size); 1383 mutex_exit(&trace_buf_lock); 1384 break; 1385 1386 default: 1387 ret = ENOTTY; 1388 } 1389 1390 if (ret == 0) { 1391 ret = stmf_copyout_iocdata(data, mode, iocd, obuf); 1392 } else if (iocd->stmf_error) { 1393 (void) stmf_copyout_iocdata(data, mode, iocd, obuf); 1394 } 1395 if (obuf) { 1396 kmem_free(obuf, iocd->stmf_obuf_size); 1397 obuf = NULL; 1398 } 1399 if (ibuf) { 1400 kmem_free(ibuf, iocd->stmf_ibuf_size); 1401 ibuf = NULL; 1402 } 1403 kmem_free(iocd, sizeof (stmf_iocdata_t)); 1404 return (ret); 1405 } 1406 1407 static int 1408 stmf_get_service_state() 1409 { 1410 stmf_i_local_port_t *ilport; 1411 stmf_i_lu_t *ilu; 1412 int online = 0; 1413 int offline = 0; 1414 int onlining = 0; 1415 int offlining = 0; 1416 1417 ASSERT(mutex_owned(&stmf_state.stmf_lock)); 1418 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL; 1419 ilport = ilport->ilport_next) { 1420 if (ilport->ilport_state == STMF_STATE_OFFLINE) 1421 offline++; 1422 else if (ilport->ilport_state == STMF_STATE_ONLINE) 1423 online++; 1424 else if (ilport->ilport_state == STMF_STATE_ONLINING) 1425 onlining++; 1426 else if (ilport->ilport_state == STMF_STATE_OFFLINING) 1427 offlining++; 1428 } 1429 1430 for (ilu = stmf_state.stmf_ilulist; ilu != NULL; 1431 ilu = ilu->ilu_next) { 1432 if (ilu->ilu_state == STMF_STATE_OFFLINE) 1433 offline++; 1434 else if (ilu->ilu_state == STMF_STATE_ONLINE) 1435 online++; 1436 else if (ilu->ilu_state == STMF_STATE_ONLINING) 1437 onlining++; 1438 else if (ilu->ilu_state == STMF_STATE_OFFLINING) 1439 offlining++; 1440 } 1441 1442 if (stmf_state.stmf_service_running) { 1443 if (onlining) 1444 return (STMF_STATE_ONLINING); 1445 else 1446 return (STMF_STATE_ONLINE); 1447 } 1448 1449 if (offlining) { 1450 return (STMF_STATE_OFFLINING); 1451 } 1452 1453 return (STMF_STATE_OFFLINE); 1454 } 1455 1456 static int 1457 stmf_set_stmf_state(stmf_state_desc_t *std) 1458 { 1459 stmf_i_local_port_t *ilport; 1460 stmf_i_lu_t *ilu; 1461 stmf_state_change_info_t ssi; 1462 int svc_state; 1463 1464 ssi.st_rflags = STMF_RFLAG_USER_REQUEST; 1465 ssi.st_additional_info = NULL; 1466 1467 mutex_enter(&stmf_state.stmf_lock); 1468 if (!stmf_state.stmf_exclusive_open) { 1469 mutex_exit(&stmf_state.stmf_lock); 1470 return (EACCES); 1471 } 1472 1473 if (stmf_state.stmf_inventory_locked) { 1474 mutex_exit(&stmf_state.stmf_lock); 1475 return (EBUSY); 1476 } 1477 1478 if ((std->state != STMF_STATE_ONLINE) && 1479 (std->state != STMF_STATE_OFFLINE)) { 1480 mutex_exit(&stmf_state.stmf_lock); 1481 return (EINVAL); 1482 } 1483 1484 svc_state = stmf_get_service_state(); 1485 if ((svc_state == STMF_STATE_OFFLINING) || 1486 (svc_state == STMF_STATE_ONLINING)) { 1487 mutex_exit(&stmf_state.stmf_lock); 1488 return (EBUSY); 1489 } 1490 1491 if (svc_state == STMF_STATE_OFFLINE) { 1492 if (std->config_state == STMF_CONFIG_INIT) { 1493 if (std->state != STMF_STATE_OFFLINE) { 1494 mutex_exit(&stmf_state.stmf_lock); 1495 return (EINVAL); 1496 } 1497 stmf_state.stmf_config_state = STMF_CONFIG_INIT; 1498 stmf_delete_all_ppds(); 1499 stmf_view_clear_config(); 1500 stmf_view_init(); 1501 mutex_exit(&stmf_state.stmf_lock); 1502 return (0); 1503 } 1504 if ((stmf_state.stmf_config_state == STMF_CONFIG_INIT) || 1505 (stmf_state.stmf_config_state == STMF_CONFIG_NONE)) { 1506 if (std->config_state != STMF_CONFIG_INIT_DONE) { 1507 mutex_exit(&stmf_state.stmf_lock); 1508 return (EINVAL); 1509 } 1510 stmf_state.stmf_config_state = STMF_CONFIG_INIT_DONE; 1511 } 1512 if (std->state == STMF_STATE_OFFLINE) { 1513 mutex_exit(&stmf_state.stmf_lock); 1514 return (0); 1515 } 1516 if (stmf_state.stmf_config_state == STMF_CONFIG_INIT) { 1517 mutex_exit(&stmf_state.stmf_lock); 1518 return (EINVAL); 1519 } 1520 stmf_state.stmf_inventory_locked = 1; 1521 stmf_state.stmf_service_running = 1; 1522 mutex_exit(&stmf_state.stmf_lock); 1523 1524 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL; 1525 ilport = ilport->ilport_next) { 1526 if (stmf_state.stmf_default_lport_state != 1527 STMF_STATE_ONLINE) 1528 continue; 1529 (void) stmf_ctl(STMF_CMD_LPORT_ONLINE, 1530 ilport->ilport_lport, &ssi); 1531 } 1532 1533 for (ilu = stmf_state.stmf_ilulist; ilu != NULL; 1534 ilu = ilu->ilu_next) { 1535 if (stmf_state.stmf_default_lu_state != 1536 STMF_STATE_ONLINE) 1537 continue; 1538 (void) stmf_ctl(STMF_CMD_LU_ONLINE, ilu->ilu_lu, &ssi); 1539 } 1540 mutex_enter(&stmf_state.stmf_lock); 1541 stmf_state.stmf_inventory_locked = 0; 1542 mutex_exit(&stmf_state.stmf_lock); 1543 return (0); 1544 } 1545 1546 /* svc_state is STMF_STATE_ONLINE here */ 1547 if ((std->state != STMF_STATE_OFFLINE) || 1548 (std->config_state == STMF_CONFIG_INIT)) { 1549 mutex_exit(&stmf_state.stmf_lock); 1550 return (EACCES); 1551 } 1552 1553 stmf_state.stmf_inventory_locked = 1; 1554 stmf_state.stmf_service_running = 0; 1555 1556 mutex_exit(&stmf_state.stmf_lock); 1557 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL; 1558 ilport = ilport->ilport_next) { 1559 if (ilport->ilport_state != STMF_STATE_ONLINE) 1560 continue; 1561 (void) stmf_ctl(STMF_CMD_LPORT_OFFLINE, 1562 ilport->ilport_lport, &ssi); 1563 } 1564 1565 for (ilu = stmf_state.stmf_ilulist; ilu != NULL; 1566 ilu = ilu->ilu_next) { 1567 if (ilu->ilu_state != STMF_STATE_ONLINE) 1568 continue; 1569 (void) stmf_ctl(STMF_CMD_LU_OFFLINE, ilu->ilu_lu, &ssi); 1570 } 1571 mutex_enter(&stmf_state.stmf_lock); 1572 stmf_state.stmf_inventory_locked = 0; 1573 mutex_exit(&stmf_state.stmf_lock); 1574 return (0); 1575 } 1576 1577 static int 1578 stmf_get_stmf_state(stmf_state_desc_t *std) 1579 { 1580 mutex_enter(&stmf_state.stmf_lock); 1581 std->state = stmf_get_service_state(); 1582 std->config_state = stmf_state.stmf_config_state; 1583 mutex_exit(&stmf_state.stmf_lock); 1584 1585 return (0); 1586 } 1587 1588 /* 1589 * handles registration message from pppt for a logical unit 1590 */ 1591 stmf_status_t 1592 stmf_ic_lu_reg(stmf_ic_reg_dereg_lun_msg_t *msg, uint32_t type) 1593 { 1594 stmf_i_lu_provider_t *ilp; 1595 stmf_lu_provider_t *lp; 1596 mutex_enter(&stmf_state.stmf_lock); 1597 for (ilp = stmf_state.stmf_ilplist; ilp != NULL; ilp = ilp->ilp_next) { 1598 if (strcmp(msg->icrl_lu_provider_name, 1599 ilp->ilp_lp->lp_name) == 0) { 1600 lp = ilp->ilp_lp; 1601 mutex_exit(&stmf_state.stmf_lock); 1602 lp->lp_proxy_msg(msg->icrl_lun_id, msg->icrl_cb_arg, 1603 msg->icrl_cb_arg_len, type); 1604 return (STMF_SUCCESS); 1605 } 1606 } 1607 mutex_exit(&stmf_state.stmf_lock); 1608 return (STMF_SUCCESS); 1609 } 1610 1611 /* 1612 * handles de-registration message from pppt for a logical unit 1613 */ 1614 stmf_status_t 1615 stmf_ic_lu_dereg(stmf_ic_reg_dereg_lun_msg_t *msg) 1616 { 1617 stmf_i_lu_provider_t *ilp; 1618 stmf_lu_provider_t *lp; 1619 mutex_enter(&stmf_state.stmf_lock); 1620 for (ilp = stmf_state.stmf_ilplist; ilp != NULL; ilp = ilp->ilp_next) { 1621 if (strcmp(msg->icrl_lu_provider_name, 1622 ilp->ilp_lp->lp_name) == 0) { 1623 lp = ilp->ilp_lp; 1624 mutex_exit(&stmf_state.stmf_lock); 1625 lp->lp_proxy_msg(msg->icrl_lun_id, NULL, 0, 1626 STMF_MSG_LU_DEREGISTER); 1627 return (STMF_SUCCESS); 1628 } 1629 } 1630 mutex_exit(&stmf_state.stmf_lock); 1631 return (STMF_SUCCESS); 1632 } 1633 1634 /* 1635 * helper function to find a task that matches a task_msgid 1636 */ 1637 scsi_task_t * 1638 find_task_from_msgid(uint8_t *lu_id, stmf_ic_msgid_t task_msgid) 1639 { 1640 stmf_i_lu_t *ilu; 1641 stmf_i_scsi_task_t *itask; 1642 1643 mutex_enter(&stmf_state.stmf_lock); 1644 for (ilu = stmf_state.stmf_ilulist; ilu != NULL; ilu = ilu->ilu_next) { 1645 if (bcmp(lu_id, ilu->ilu_lu->lu_id->ident, 16) == 0) { 1646 break; 1647 } 1648 } 1649 1650 if (ilu == NULL) { 1651 mutex_exit(&stmf_state.stmf_lock); 1652 return (NULL); 1653 } 1654 1655 mutex_enter(&ilu->ilu_task_lock); 1656 for (itask = ilu->ilu_tasks; itask != NULL; 1657 itask = itask->itask_lu_next) { 1658 if (itask->itask_flags & (ITASK_IN_FREE_LIST | 1659 ITASK_BEING_ABORTED)) { 1660 continue; 1661 } 1662 if (itask->itask_proxy_msg_id == task_msgid) { 1663 break; 1664 } 1665 } 1666 mutex_exit(&ilu->ilu_task_lock); 1667 mutex_exit(&stmf_state.stmf_lock); 1668 1669 if (itask != NULL) { 1670 return (itask->itask_task); 1671 } else { 1672 /* task not found. Likely already aborted. */ 1673 return (NULL); 1674 } 1675 } 1676 1677 /* 1678 * message received from pppt/ic 1679 */ 1680 stmf_status_t 1681 stmf_msg_rx(stmf_ic_msg_t *msg) 1682 { 1683 mutex_enter(&stmf_state.stmf_lock); 1684 if (stmf_state.stmf_alua_state != 1) { 1685 mutex_exit(&stmf_state.stmf_lock); 1686 cmn_err(CE_WARN, "stmf alua state is disabled"); 1687 ic_msg_free(msg); 1688 return (STMF_FAILURE); 1689 } 1690 mutex_exit(&stmf_state.stmf_lock); 1691 1692 switch (msg->icm_msg_type) { 1693 case STMF_ICM_REGISTER_LUN: 1694 (void) stmf_ic_lu_reg( 1695 (stmf_ic_reg_dereg_lun_msg_t *)msg->icm_msg, 1696 STMF_MSG_LU_REGISTER); 1697 break; 1698 case STMF_ICM_LUN_ACTIVE: 1699 (void) stmf_ic_lu_reg( 1700 (stmf_ic_reg_dereg_lun_msg_t *)msg->icm_msg, 1701 STMF_MSG_LU_ACTIVE); 1702 break; 1703 case STMF_ICM_DEREGISTER_LUN: 1704 (void) stmf_ic_lu_dereg( 1705 (stmf_ic_reg_dereg_lun_msg_t *)msg->icm_msg); 1706 break; 1707 case STMF_ICM_SCSI_DATA: 1708 (void) stmf_ic_rx_scsi_data( 1709 (stmf_ic_scsi_data_msg_t *)msg->icm_msg); 1710 break; 1711 case STMF_ICM_SCSI_STATUS: 1712 (void) stmf_ic_rx_scsi_status( 1713 (stmf_ic_scsi_status_msg_t *)msg->icm_msg); 1714 break; 1715 case STMF_ICM_STATUS: 1716 (void) stmf_ic_rx_status( 1717 (stmf_ic_status_msg_t *)msg->icm_msg); 1718 break; 1719 default: 1720 cmn_err(CE_WARN, "unknown message received %d", 1721 msg->icm_msg_type); 1722 ic_msg_free(msg); 1723 return (STMF_FAILURE); 1724 } 1725 ic_msg_free(msg); 1726 return (STMF_SUCCESS); 1727 } 1728 1729 stmf_status_t 1730 stmf_ic_rx_status(stmf_ic_status_msg_t *msg) 1731 { 1732 stmf_i_local_port_t *ilport; 1733 1734 if (msg->ics_msg_type != STMF_ICM_REGISTER_PROXY_PORT) { 1735 /* for now, ignore other message status */ 1736 return (STMF_SUCCESS); 1737 } 1738 1739 if (msg->ics_status != STMF_SUCCESS) { 1740 return (STMF_SUCCESS); 1741 } 1742 1743 mutex_enter(&stmf_state.stmf_lock); 1744 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL; 1745 ilport = ilport->ilport_next) { 1746 if (msg->ics_msgid == ilport->ilport_reg_msgid) { 1747 ilport->ilport_proxy_registered = 1; 1748 break; 1749 } 1750 } 1751 mutex_exit(&stmf_state.stmf_lock); 1752 return (STMF_SUCCESS); 1753 } 1754 1755 /* 1756 * handles scsi status message from pppt 1757 */ 1758 stmf_status_t 1759 stmf_ic_rx_scsi_status(stmf_ic_scsi_status_msg_t *msg) 1760 { 1761 scsi_task_t *task; 1762 1763 /* is this a task management command */ 1764 if (msg->icss_task_msgid & MSG_ID_TM_BIT) { 1765 return (STMF_SUCCESS); 1766 } 1767 1768 task = find_task_from_msgid(msg->icss_lun_id, msg->icss_task_msgid); 1769 1770 if (task == NULL) { 1771 return (STMF_SUCCESS); 1772 } 1773 1774 task->task_scsi_status = msg->icss_status; 1775 task->task_sense_data = msg->icss_sense; 1776 task->task_sense_length = msg->icss_sense_len; 1777 (void) stmf_send_scsi_status(task, STMF_IOF_LU_DONE); 1778 1779 return (STMF_SUCCESS); 1780 } 1781 1782 /* 1783 * handles scsi data message from pppt 1784 */ 1785 stmf_status_t 1786 stmf_ic_rx_scsi_data(stmf_ic_scsi_data_msg_t *msg) 1787 { 1788 stmf_i_scsi_task_t *itask; 1789 scsi_task_t *task; 1790 stmf_xfer_data_t *xd = NULL; 1791 stmf_data_buf_t *dbuf; 1792 uint32_t sz, minsz, xd_sz, asz; 1793 1794 /* is this a task management command */ 1795 if (msg->icsd_task_msgid & MSG_ID_TM_BIT) { 1796 return (STMF_SUCCESS); 1797 } 1798 1799 task = find_task_from_msgid(msg->icsd_lun_id, msg->icsd_task_msgid); 1800 if (task == NULL) { 1801 stmf_ic_msg_t *ic_xfer_done_msg = NULL; 1802 static uint64_t data_msg_id; 1803 stmf_status_t ic_ret = STMF_FAILURE; 1804 mutex_enter(&stmf_state.stmf_lock); 1805 data_msg_id = stmf_proxy_msg_id++; 1806 mutex_exit(&stmf_state.stmf_lock); 1807 /* 1808 * send xfer done status to pppt 1809 * for now, set the session id to 0 as we cannot 1810 * ascertain it since we cannot find the task 1811 */ 1812 ic_xfer_done_msg = ic_scsi_data_xfer_done_msg_alloc( 1813 msg->icsd_task_msgid, 0, STMF_FAILURE, data_msg_id); 1814 if (ic_xfer_done_msg) { 1815 ic_ret = ic_tx_msg(ic_xfer_done_msg); 1816 if (ic_ret != STMF_IC_MSG_SUCCESS) { 1817 cmn_err(CE_WARN, "unable to xmit proxy msg"); 1818 } 1819 } 1820 return (STMF_FAILURE); 1821 } 1822 1823 itask = (stmf_i_scsi_task_t *)task->task_stmf_private; 1824 dbuf = itask->itask_proxy_dbuf; 1825 1826 task->task_cmd_xfer_length += msg->icsd_data_len; 1827 1828 if (task->task_additional_flags & 1829 TASK_AF_NO_EXPECTED_XFER_LENGTH) { 1830 task->task_expected_xfer_length = 1831 task->task_cmd_xfer_length; 1832 } 1833 1834 sz = min(task->task_expected_xfer_length, 1835 task->task_cmd_xfer_length); 1836 1837 xd_sz = msg->icsd_data_len; 1838 asz = xd_sz + sizeof (*xd) - 4; 1839 xd = (stmf_xfer_data_t *)kmem_zalloc(asz, KM_NOSLEEP); 1840 1841 if (xd == NULL) { 1842 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 1843 STMF_ALLOC_FAILURE, NULL); 1844 return (STMF_FAILURE); 1845 } 1846 1847 xd->alloc_size = asz; 1848 xd->size_left = xd_sz; 1849 bcopy(msg->icsd_data, xd->buf, xd_sz); 1850 1851 sz = min(sz, xd->size_left); 1852 xd->size_left = sz; 1853 minsz = min(512, sz); 1854 1855 if (dbuf == NULL) 1856 dbuf = stmf_alloc_dbuf(task, sz, &minsz, 0); 1857 if (dbuf == NULL) { 1858 kmem_free(xd, xd->alloc_size); 1859 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 1860 STMF_ALLOC_FAILURE, NULL); 1861 return (STMF_FAILURE); 1862 } 1863 dbuf->db_lu_private = xd; 1864 dbuf->db_relative_offset = task->task_nbytes_transferred; 1865 stmf_xd_to_dbuf(dbuf, 0); 1866 1867 dbuf->db_flags = DB_DIRECTION_TO_RPORT; 1868 (void) stmf_xfer_data(task, dbuf, 0); 1869 return (STMF_SUCCESS); 1870 } 1871 1872 stmf_status_t 1873 stmf_proxy_scsi_cmd(scsi_task_t *task, stmf_data_buf_t *dbuf) 1874 { 1875 stmf_i_scsi_task_t *itask = 1876 (stmf_i_scsi_task_t *)task->task_stmf_private; 1877 stmf_i_local_port_t *ilport = 1878 (stmf_i_local_port_t *)task->task_lport->lport_stmf_private; 1879 stmf_ic_msg_t *ic_cmd_msg; 1880 stmf_ic_msg_status_t ic_ret; 1881 stmf_status_t ret = STMF_FAILURE; 1882 1883 if (stmf_state.stmf_alua_state != 1) { 1884 cmn_err(CE_WARN, "stmf alua state is disabled"); 1885 return (STMF_FAILURE); 1886 } 1887 1888 if (ilport->ilport_proxy_registered == 0) { 1889 return (STMF_FAILURE); 1890 } 1891 1892 mutex_enter(&stmf_state.stmf_lock); 1893 itask->itask_proxy_msg_id = stmf_proxy_msg_id++; 1894 mutex_exit(&stmf_state.stmf_lock); 1895 itask->itask_proxy_dbuf = dbuf; 1896 1897 /* 1898 * stmf will now take over the task handling for this task 1899 * but it still needs to be treated differently from other 1900 * default handled tasks, hence the ITASK_PROXY_TASK. 1901 * If this is a task management function, we're really just 1902 * duping the command to the peer. Set the TM bit so that 1903 * we can recognize this on return since we won't be completing 1904 * the proxied task in that case. 1905 */ 1906 if (task->task_mgmt_function) { 1907 itask->itask_proxy_msg_id |= MSG_ID_TM_BIT; 1908 } else { 1909 uint32_t new, old; 1910 do { 1911 new = old = itask->itask_flags; 1912 if (new & ITASK_BEING_ABORTED) 1913 return (STMF_FAILURE); 1914 new |= ITASK_DEFAULT_HANDLING | ITASK_PROXY_TASK; 1915 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 1916 } 1917 if (dbuf) { 1918 ic_cmd_msg = ic_scsi_cmd_msg_alloc(itask->itask_proxy_msg_id, 1919 task, dbuf->db_data_size, dbuf->db_sglist[0].seg_addr, 1920 itask->itask_proxy_msg_id); 1921 } else { 1922 ic_cmd_msg = ic_scsi_cmd_msg_alloc(itask->itask_proxy_msg_id, 1923 task, 0, NULL, itask->itask_proxy_msg_id); 1924 } 1925 if (ic_cmd_msg) { 1926 ic_ret = ic_tx_msg(ic_cmd_msg); 1927 if (ic_ret == STMF_IC_MSG_SUCCESS) { 1928 ret = STMF_SUCCESS; 1929 } 1930 } 1931 return (ret); 1932 } 1933 1934 1935 stmf_status_t 1936 pppt_modload() 1937 { 1938 int error; 1939 1940 if (pppt_mod == NULL && ((pppt_mod = 1941 ddi_modopen("drv/pppt", KRTLD_MODE_FIRST, &error)) == NULL)) { 1942 cmn_err(CE_WARN, "Unable to load pppt"); 1943 return (STMF_FAILURE); 1944 } 1945 1946 if (ic_reg_port_msg_alloc == NULL && ((ic_reg_port_msg_alloc = 1947 (stmf_ic_reg_port_msg_alloc_func_t) 1948 ddi_modsym(pppt_mod, "stmf_ic_reg_port_msg_alloc", 1949 &error)) == NULL)) { 1950 cmn_err(CE_WARN, 1951 "Unable to find symbol - stmf_ic_reg_port_msg_alloc"); 1952 return (STMF_FAILURE); 1953 } 1954 1955 1956 if (ic_dereg_port_msg_alloc == NULL && ((ic_dereg_port_msg_alloc = 1957 (stmf_ic_dereg_port_msg_alloc_func_t) 1958 ddi_modsym(pppt_mod, "stmf_ic_dereg_port_msg_alloc", 1959 &error)) == NULL)) { 1960 cmn_err(CE_WARN, 1961 "Unable to find symbol - stmf_ic_dereg_port_msg_alloc"); 1962 return (STMF_FAILURE); 1963 } 1964 1965 if (ic_reg_lun_msg_alloc == NULL && ((ic_reg_lun_msg_alloc = 1966 (stmf_ic_reg_lun_msg_alloc_func_t) 1967 ddi_modsym(pppt_mod, "stmf_ic_reg_lun_msg_alloc", 1968 &error)) == NULL)) { 1969 cmn_err(CE_WARN, 1970 "Unable to find symbol - stmf_ic_reg_lun_msg_alloc"); 1971 return (STMF_FAILURE); 1972 } 1973 1974 if (ic_lun_active_msg_alloc == NULL && ((ic_lun_active_msg_alloc = 1975 (stmf_ic_lun_active_msg_alloc_func_t) 1976 ddi_modsym(pppt_mod, "stmf_ic_lun_active_msg_alloc", 1977 &error)) == NULL)) { 1978 cmn_err(CE_WARN, 1979 "Unable to find symbol - stmf_ic_lun_active_msg_alloc"); 1980 return (STMF_FAILURE); 1981 } 1982 1983 if (ic_dereg_lun_msg_alloc == NULL && ((ic_dereg_lun_msg_alloc = 1984 (stmf_ic_dereg_lun_msg_alloc_func_t) 1985 ddi_modsym(pppt_mod, "stmf_ic_dereg_lun_msg_alloc", 1986 &error)) == NULL)) { 1987 cmn_err(CE_WARN, 1988 "Unable to find symbol - stmf_ic_dereg_lun_msg_alloc"); 1989 return (STMF_FAILURE); 1990 } 1991 1992 if (ic_scsi_cmd_msg_alloc == NULL && ((ic_scsi_cmd_msg_alloc = 1993 (stmf_ic_scsi_cmd_msg_alloc_func_t) 1994 ddi_modsym(pppt_mod, "stmf_ic_scsi_cmd_msg_alloc", 1995 &error)) == NULL)) { 1996 cmn_err(CE_WARN, 1997 "Unable to find symbol - stmf_ic_scsi_cmd_msg_alloc"); 1998 return (STMF_FAILURE); 1999 } 2000 2001 if (ic_scsi_data_xfer_done_msg_alloc == NULL && 2002 ((ic_scsi_data_xfer_done_msg_alloc = 2003 (stmf_ic_scsi_data_xfer_done_msg_alloc_func_t) 2004 ddi_modsym(pppt_mod, "stmf_ic_scsi_data_xfer_done_msg_alloc", 2005 &error)) == NULL)) { 2006 cmn_err(CE_WARN, 2007 "Unable to find symbol -" 2008 "stmf_ic_scsi_data_xfer_done_msg_alloc"); 2009 return (STMF_FAILURE); 2010 } 2011 2012 if (ic_session_reg_msg_alloc == NULL && 2013 ((ic_session_reg_msg_alloc = 2014 (stmf_ic_session_create_msg_alloc_func_t) 2015 ddi_modsym(pppt_mod, "stmf_ic_session_create_msg_alloc", 2016 &error)) == NULL)) { 2017 cmn_err(CE_WARN, 2018 "Unable to find symbol -" 2019 "stmf_ic_session_create_msg_alloc"); 2020 return (STMF_FAILURE); 2021 } 2022 2023 if (ic_session_dereg_msg_alloc == NULL && 2024 ((ic_session_dereg_msg_alloc = 2025 (stmf_ic_session_destroy_msg_alloc_func_t) 2026 ddi_modsym(pppt_mod, "stmf_ic_session_destroy_msg_alloc", 2027 &error)) == NULL)) { 2028 cmn_err(CE_WARN, 2029 "Unable to find symbol -" 2030 "stmf_ic_session_destroy_msg_alloc"); 2031 return (STMF_FAILURE); 2032 } 2033 2034 if (ic_tx_msg == NULL && ((ic_tx_msg = 2035 (stmf_ic_tx_msg_func_t)ddi_modsym(pppt_mod, "stmf_ic_tx_msg", 2036 &error)) == NULL)) { 2037 cmn_err(CE_WARN, "Unable to find symbol - stmf_ic_tx_msg"); 2038 return (STMF_FAILURE); 2039 } 2040 2041 if (ic_msg_free == NULL && ((ic_msg_free = 2042 (stmf_ic_msg_free_func_t)ddi_modsym(pppt_mod, "stmf_ic_msg_free", 2043 &error)) == NULL)) { 2044 cmn_err(CE_WARN, "Unable to find symbol - stmf_ic_msg_free"); 2045 return (STMF_FAILURE); 2046 } 2047 return (STMF_SUCCESS); 2048 } 2049 2050 static void 2051 stmf_get_alua_state(stmf_alua_state_desc_t *alua_state) 2052 { 2053 mutex_enter(&stmf_state.stmf_lock); 2054 alua_state->alua_node = stmf_state.stmf_alua_node; 2055 alua_state->alua_state = stmf_state.stmf_alua_state; 2056 mutex_exit(&stmf_state.stmf_lock); 2057 } 2058 2059 2060 static int 2061 stmf_set_alua_state(stmf_alua_state_desc_t *alua_state) 2062 { 2063 stmf_i_local_port_t *ilport; 2064 stmf_i_lu_t *ilu; 2065 stmf_lu_t *lu; 2066 stmf_ic_msg_status_t ic_ret; 2067 stmf_ic_msg_t *ic_reg_lun, *ic_reg_port; 2068 stmf_local_port_t *lport; 2069 int ret = 0; 2070 2071 if (alua_state->alua_state > 1 || alua_state->alua_node > 1) { 2072 return (EINVAL); 2073 } 2074 2075 mutex_enter(&stmf_state.stmf_lock); 2076 if (alua_state->alua_state == 1) { 2077 if (pppt_modload() == STMF_FAILURE) { 2078 ret = EIO; 2079 goto err; 2080 } 2081 if (alua_state->alua_node != 0) { 2082 /* reset existing rtpids to new base */ 2083 stmf_rtpid_counter = 255; 2084 } 2085 stmf_state.stmf_alua_node = alua_state->alua_node; 2086 stmf_state.stmf_alua_state = 1; 2087 /* register existing local ports with ppp */ 2088 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL; 2089 ilport = ilport->ilport_next) { 2090 /* skip standby ports and non-alua participants */ 2091 if (ilport->ilport_standby == 1 || 2092 ilport->ilport_alua == 0) { 2093 continue; 2094 } 2095 if (alua_state->alua_node != 0) { 2096 ilport->ilport_rtpid = 2097 atomic_inc_16_nv(&stmf_rtpid_counter); 2098 } 2099 lport = ilport->ilport_lport; 2100 ic_reg_port = ic_reg_port_msg_alloc( 2101 lport->lport_id, ilport->ilport_rtpid, 2102 0, NULL, stmf_proxy_msg_id); 2103 if (ic_reg_port) { 2104 ic_ret = ic_tx_msg(ic_reg_port); 2105 if (ic_ret == STMF_IC_MSG_SUCCESS) { 2106 ilport->ilport_reg_msgid = 2107 stmf_proxy_msg_id++; 2108 } else { 2109 cmn_err(CE_WARN, 2110 "error on port registration " 2111 "port - %s", 2112 ilport->ilport_kstat_tgt_name); 2113 } 2114 } 2115 } 2116 /* register existing logical units */ 2117 for (ilu = stmf_state.stmf_ilulist; ilu != NULL; 2118 ilu = ilu->ilu_next) { 2119 if (ilu->ilu_access != STMF_LU_ACTIVE) { 2120 continue; 2121 } 2122 /* register with proxy module */ 2123 lu = ilu->ilu_lu; 2124 if (lu->lu_lp && lu->lu_lp->lp_lpif_rev == LPIF_REV_2 && 2125 lu->lu_lp->lp_alua_support) { 2126 ilu->ilu_alua = 1; 2127 /* allocate the register message */ 2128 ic_reg_lun = ic_reg_lun_msg_alloc( 2129 lu->lu_id->ident, lu->lu_lp->lp_name, 2130 lu->lu_proxy_reg_arg_len, 2131 (uint8_t *)lu->lu_proxy_reg_arg, 2132 stmf_proxy_msg_id); 2133 /* send the message */ 2134 if (ic_reg_lun) { 2135 ic_ret = ic_tx_msg(ic_reg_lun); 2136 if (ic_ret == STMF_IC_MSG_SUCCESS) { 2137 stmf_proxy_msg_id++; 2138 } 2139 } 2140 } 2141 } 2142 } else { 2143 stmf_state.stmf_alua_state = 0; 2144 } 2145 2146 err: 2147 mutex_exit(&stmf_state.stmf_lock); 2148 return (ret); 2149 } 2150 2151 2152 typedef struct { 2153 void *bp; /* back pointer from internal struct to main struct */ 2154 int alloc_size; 2155 } __istmf_t; 2156 2157 typedef struct { 2158 __istmf_t *fp; /* Framework private */ 2159 void *cp; /* Caller private */ 2160 void *ss; /* struct specific */ 2161 } __stmf_t; 2162 2163 static struct { 2164 int shared; 2165 int fw_private; 2166 } stmf_sizes[] = { { 0, 0 }, 2167 { GET_STRUCT_SIZE(stmf_lu_provider_t), 2168 GET_STRUCT_SIZE(stmf_i_lu_provider_t) }, 2169 { GET_STRUCT_SIZE(stmf_port_provider_t), 2170 GET_STRUCT_SIZE(stmf_i_port_provider_t) }, 2171 { GET_STRUCT_SIZE(stmf_local_port_t), 2172 GET_STRUCT_SIZE(stmf_i_local_port_t) }, 2173 { GET_STRUCT_SIZE(stmf_lu_t), 2174 GET_STRUCT_SIZE(stmf_i_lu_t) }, 2175 { GET_STRUCT_SIZE(stmf_scsi_session_t), 2176 GET_STRUCT_SIZE(stmf_i_scsi_session_t) }, 2177 { GET_STRUCT_SIZE(scsi_task_t), 2178 GET_STRUCT_SIZE(stmf_i_scsi_task_t) }, 2179 { GET_STRUCT_SIZE(stmf_data_buf_t), 2180 GET_STRUCT_SIZE(__istmf_t) }, 2181 { GET_STRUCT_SIZE(stmf_dbuf_store_t), 2182 GET_STRUCT_SIZE(__istmf_t) } 2183 2184 }; 2185 2186 void * 2187 stmf_alloc(stmf_struct_id_t struct_id, int additional_size, int flags) 2188 { 2189 int stmf_size; 2190 int kmem_flag; 2191 __stmf_t *sh; 2192 2193 if ((struct_id == 0) || (struct_id >= STMF_MAX_STRUCT_IDS)) 2194 return (NULL); 2195 2196 if ((curthread->t_flag & T_INTR_THREAD) || (flags & AF_FORCE_NOSLEEP)) { 2197 kmem_flag = KM_NOSLEEP; 2198 } else { 2199 kmem_flag = KM_SLEEP; 2200 } 2201 2202 additional_size = (additional_size + 7) & (~7); 2203 stmf_size = stmf_sizes[struct_id].shared + 2204 stmf_sizes[struct_id].fw_private + additional_size; 2205 2206 if (flags & AF_DONTZERO) 2207 sh = (__stmf_t *)kmem_alloc(stmf_size, kmem_flag); 2208 else 2209 sh = (__stmf_t *)kmem_zalloc(stmf_size, kmem_flag); 2210 2211 if (sh == NULL) 2212 return (NULL); 2213 2214 /* 2215 * In principle, the implementation inside stmf_alloc should not 2216 * be changed anyway. But the original order of framework private 2217 * data and caller private data does not support sglist in the caller 2218 * private data. 2219 * To work around this, the memory segments of framework private 2220 * data and caller private data are re-ordered here. 2221 * A better solution is to provide a specific interface to allocate 2222 * the sglist, then we will not need this workaround any more. 2223 * But before the new interface is available, the memory segment 2224 * ordering should be kept as is. 2225 */ 2226 sh->cp = GET_BYTE_OFFSET(sh, stmf_sizes[struct_id].shared); 2227 sh->fp = (__istmf_t *)GET_BYTE_OFFSET(sh, 2228 stmf_sizes[struct_id].shared + additional_size); 2229 2230 sh->fp->bp = sh; 2231 /* Just store the total size instead of storing additional size */ 2232 sh->fp->alloc_size = stmf_size; 2233 2234 return (sh); 2235 } 2236 2237 void 2238 stmf_free(void *ptr) 2239 { 2240 __stmf_t *sh = (__stmf_t *)ptr; 2241 2242 /* 2243 * So far we dont need any struct specific processing. If such 2244 * a need ever arises, then store the struct id in the framework 2245 * private section and get it here as sh->fp->struct_id. 2246 */ 2247 kmem_free(ptr, sh->fp->alloc_size); 2248 } 2249 2250 /* 2251 * Given a pointer to stmf_lu_t, verifies if this lu is registered with the 2252 * framework and returns a pointer to framework private data for the lu. 2253 * Returns NULL if the lu was not found. 2254 */ 2255 stmf_i_lu_t * 2256 stmf_lookup_lu(stmf_lu_t *lu) 2257 { 2258 stmf_i_lu_t *ilu; 2259 ASSERT(mutex_owned(&stmf_state.stmf_lock)); 2260 2261 for (ilu = stmf_state.stmf_ilulist; ilu != NULL; ilu = ilu->ilu_next) { 2262 if (ilu->ilu_lu == lu) 2263 return (ilu); 2264 } 2265 return (NULL); 2266 } 2267 2268 /* 2269 * Given a pointer to stmf_local_port_t, verifies if this lport is registered 2270 * with the framework and returns a pointer to framework private data for 2271 * the lport. 2272 * Returns NULL if the lport was not found. 2273 */ 2274 stmf_i_local_port_t * 2275 stmf_lookup_lport(stmf_local_port_t *lport) 2276 { 2277 stmf_i_local_port_t *ilport; 2278 ASSERT(mutex_owned(&stmf_state.stmf_lock)); 2279 2280 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL; 2281 ilport = ilport->ilport_next) { 2282 if (ilport->ilport_lport == lport) 2283 return (ilport); 2284 } 2285 return (NULL); 2286 } 2287 2288 stmf_status_t 2289 stmf_register_lu_provider(stmf_lu_provider_t *lp) 2290 { 2291 stmf_i_lu_provider_t *ilp = (stmf_i_lu_provider_t *)lp->lp_stmf_private; 2292 stmf_pp_data_t *ppd; 2293 uint32_t cb_flags; 2294 2295 if (lp->lp_lpif_rev != LPIF_REV_1 && lp->lp_lpif_rev != LPIF_REV_2) 2296 return (STMF_FAILURE); 2297 2298 mutex_enter(&stmf_state.stmf_lock); 2299 ilp->ilp_next = stmf_state.stmf_ilplist; 2300 stmf_state.stmf_ilplist = ilp; 2301 stmf_state.stmf_nlps++; 2302 2303 /* See if we need to do a callback */ 2304 for (ppd = stmf_state.stmf_ppdlist; ppd != NULL; ppd = ppd->ppd_next) { 2305 if (strcmp(ppd->ppd_name, lp->lp_name) == 0) { 2306 break; 2307 } 2308 } 2309 if ((ppd == NULL) || (ppd->ppd_nv == NULL)) { 2310 goto rlp_bail_out; 2311 } 2312 ilp->ilp_ppd = ppd; 2313 ppd->ppd_provider = ilp; 2314 if (lp->lp_cb == NULL) 2315 goto rlp_bail_out; 2316 ilp->ilp_cb_in_progress = 1; 2317 cb_flags = STMF_PCB_PREG_COMPLETE; 2318 if (stmf_state.stmf_config_state == STMF_CONFIG_INIT) 2319 cb_flags |= STMF_PCB_STMF_ONLINING; 2320 mutex_exit(&stmf_state.stmf_lock); 2321 lp->lp_cb(lp, STMF_PROVIDER_DATA_UPDATED, ppd->ppd_nv, cb_flags); 2322 mutex_enter(&stmf_state.stmf_lock); 2323 ilp->ilp_cb_in_progress = 0; 2324 2325 rlp_bail_out: 2326 mutex_exit(&stmf_state.stmf_lock); 2327 2328 return (STMF_SUCCESS); 2329 } 2330 2331 stmf_status_t 2332 stmf_deregister_lu_provider(stmf_lu_provider_t *lp) 2333 { 2334 stmf_i_lu_provider_t **ppilp; 2335 stmf_i_lu_provider_t *ilp = (stmf_i_lu_provider_t *)lp->lp_stmf_private; 2336 2337 mutex_enter(&stmf_state.stmf_lock); 2338 if (ilp->ilp_nlus || ilp->ilp_cb_in_progress) { 2339 mutex_exit(&stmf_state.stmf_lock); 2340 return (STMF_BUSY); 2341 } 2342 for (ppilp = &stmf_state.stmf_ilplist; *ppilp != NULL; 2343 ppilp = &((*ppilp)->ilp_next)) { 2344 if (*ppilp == ilp) { 2345 *ppilp = ilp->ilp_next; 2346 stmf_state.stmf_nlps--; 2347 if (ilp->ilp_ppd) { 2348 ilp->ilp_ppd->ppd_provider = NULL; 2349 ilp->ilp_ppd = NULL; 2350 } 2351 mutex_exit(&stmf_state.stmf_lock); 2352 return (STMF_SUCCESS); 2353 } 2354 } 2355 mutex_exit(&stmf_state.stmf_lock); 2356 return (STMF_NOT_FOUND); 2357 } 2358 2359 stmf_status_t 2360 stmf_register_port_provider(stmf_port_provider_t *pp) 2361 { 2362 stmf_i_port_provider_t *ipp = 2363 (stmf_i_port_provider_t *)pp->pp_stmf_private; 2364 stmf_pp_data_t *ppd; 2365 uint32_t cb_flags; 2366 2367 if (pp->pp_portif_rev != PORTIF_REV_1) 2368 return (STMF_FAILURE); 2369 2370 mutex_enter(&stmf_state.stmf_lock); 2371 ipp->ipp_next = stmf_state.stmf_ipplist; 2372 stmf_state.stmf_ipplist = ipp; 2373 stmf_state.stmf_npps++; 2374 /* See if we need to do a callback */ 2375 for (ppd = stmf_state.stmf_ppdlist; ppd != NULL; ppd = ppd->ppd_next) { 2376 if (strcmp(ppd->ppd_name, pp->pp_name) == 0) { 2377 break; 2378 } 2379 } 2380 if ((ppd == NULL) || (ppd->ppd_nv == NULL)) { 2381 goto rpp_bail_out; 2382 } 2383 ipp->ipp_ppd = ppd; 2384 ppd->ppd_provider = ipp; 2385 if (pp->pp_cb == NULL) 2386 goto rpp_bail_out; 2387 ipp->ipp_cb_in_progress = 1; 2388 cb_flags = STMF_PCB_PREG_COMPLETE; 2389 if (stmf_state.stmf_config_state == STMF_CONFIG_INIT) 2390 cb_flags |= STMF_PCB_STMF_ONLINING; 2391 mutex_exit(&stmf_state.stmf_lock); 2392 pp->pp_cb(pp, STMF_PROVIDER_DATA_UPDATED, ppd->ppd_nv, cb_flags); 2393 mutex_enter(&stmf_state.stmf_lock); 2394 ipp->ipp_cb_in_progress = 0; 2395 2396 rpp_bail_out: 2397 mutex_exit(&stmf_state.stmf_lock); 2398 2399 return (STMF_SUCCESS); 2400 } 2401 2402 stmf_status_t 2403 stmf_deregister_port_provider(stmf_port_provider_t *pp) 2404 { 2405 stmf_i_port_provider_t *ipp = 2406 (stmf_i_port_provider_t *)pp->pp_stmf_private; 2407 stmf_i_port_provider_t **ppipp; 2408 2409 mutex_enter(&stmf_state.stmf_lock); 2410 if (ipp->ipp_npps || ipp->ipp_cb_in_progress) { 2411 mutex_exit(&stmf_state.stmf_lock); 2412 return (STMF_BUSY); 2413 } 2414 for (ppipp = &stmf_state.stmf_ipplist; *ppipp != NULL; 2415 ppipp = &((*ppipp)->ipp_next)) { 2416 if (*ppipp == ipp) { 2417 *ppipp = ipp->ipp_next; 2418 stmf_state.stmf_npps--; 2419 if (ipp->ipp_ppd) { 2420 ipp->ipp_ppd->ppd_provider = NULL; 2421 ipp->ipp_ppd = NULL; 2422 } 2423 mutex_exit(&stmf_state.stmf_lock); 2424 return (STMF_SUCCESS); 2425 } 2426 } 2427 mutex_exit(&stmf_state.stmf_lock); 2428 return (STMF_NOT_FOUND); 2429 } 2430 2431 int 2432 stmf_load_ppd_ioctl(stmf_ppioctl_data_t *ppi, uint64_t *ppi_token, 2433 uint32_t *err_ret) 2434 { 2435 stmf_i_port_provider_t *ipp; 2436 stmf_i_lu_provider_t *ilp; 2437 stmf_pp_data_t *ppd; 2438 nvlist_t *nv; 2439 int s; 2440 int ret; 2441 2442 *err_ret = 0; 2443 2444 if ((ppi->ppi_lu_provider + ppi->ppi_port_provider) != 1) { 2445 return (EINVAL); 2446 } 2447 2448 mutex_enter(&stmf_state.stmf_lock); 2449 for (ppd = stmf_state.stmf_ppdlist; ppd != NULL; ppd = ppd->ppd_next) { 2450 if (ppi->ppi_lu_provider) { 2451 if (!ppd->ppd_lu_provider) 2452 continue; 2453 } else if (ppi->ppi_port_provider) { 2454 if (!ppd->ppd_port_provider) 2455 continue; 2456 } 2457 if (strncmp(ppi->ppi_name, ppd->ppd_name, 254) == 0) 2458 break; 2459 } 2460 2461 if (ppd == NULL) { 2462 /* New provider */ 2463 s = strlen(ppi->ppi_name); 2464 if (s > 254) { 2465 mutex_exit(&stmf_state.stmf_lock); 2466 return (EINVAL); 2467 } 2468 s += sizeof (stmf_pp_data_t) - 7; 2469 2470 ppd = kmem_zalloc(s, KM_NOSLEEP); 2471 if (ppd == NULL) { 2472 mutex_exit(&stmf_state.stmf_lock); 2473 return (ENOMEM); 2474 } 2475 ppd->ppd_alloc_size = s; 2476 (void) strcpy(ppd->ppd_name, ppi->ppi_name); 2477 2478 /* See if this provider already exists */ 2479 if (ppi->ppi_lu_provider) { 2480 ppd->ppd_lu_provider = 1; 2481 for (ilp = stmf_state.stmf_ilplist; ilp != NULL; 2482 ilp = ilp->ilp_next) { 2483 if (strcmp(ppi->ppi_name, 2484 ilp->ilp_lp->lp_name) == 0) { 2485 ppd->ppd_provider = ilp; 2486 ilp->ilp_ppd = ppd; 2487 break; 2488 } 2489 } 2490 } else { 2491 ppd->ppd_port_provider = 1; 2492 for (ipp = stmf_state.stmf_ipplist; ipp != NULL; 2493 ipp = ipp->ipp_next) { 2494 if (strcmp(ppi->ppi_name, 2495 ipp->ipp_pp->pp_name) == 0) { 2496 ppd->ppd_provider = ipp; 2497 ipp->ipp_ppd = ppd; 2498 break; 2499 } 2500 } 2501 } 2502 2503 /* Link this ppd in */ 2504 ppd->ppd_next = stmf_state.stmf_ppdlist; 2505 stmf_state.stmf_ppdlist = ppd; 2506 } 2507 2508 /* 2509 * User is requesting that the token be checked. 2510 * If there was another set after the user's get 2511 * it's an error 2512 */ 2513 if (ppi->ppi_token_valid) { 2514 if (ppi->ppi_token != ppd->ppd_token) { 2515 *err_ret = STMF_IOCERR_PPD_UPDATED; 2516 mutex_exit(&stmf_state.stmf_lock); 2517 return (EINVAL); 2518 } 2519 } 2520 2521 if ((ret = nvlist_unpack((char *)ppi->ppi_data, 2522 (size_t)ppi->ppi_data_size, &nv, KM_NOSLEEP)) != 0) { 2523 mutex_exit(&stmf_state.stmf_lock); 2524 return (ret); 2525 } 2526 2527 /* Free any existing lists and add this one to the ppd */ 2528 nvlist_free(ppd->ppd_nv); 2529 ppd->ppd_nv = nv; 2530 2531 /* set the token for writes */ 2532 ppd->ppd_token++; 2533 /* return token to caller */ 2534 if (ppi_token) { 2535 *ppi_token = ppd->ppd_token; 2536 } 2537 2538 /* If there is a provider registered, do the notifications */ 2539 if (ppd->ppd_provider) { 2540 uint32_t cb_flags = 0; 2541 2542 if (stmf_state.stmf_config_state == STMF_CONFIG_INIT) 2543 cb_flags |= STMF_PCB_STMF_ONLINING; 2544 if (ppi->ppi_lu_provider) { 2545 ilp = (stmf_i_lu_provider_t *)ppd->ppd_provider; 2546 if (ilp->ilp_lp->lp_cb == NULL) 2547 goto bail_out; 2548 ilp->ilp_cb_in_progress = 1; 2549 mutex_exit(&stmf_state.stmf_lock); 2550 ilp->ilp_lp->lp_cb(ilp->ilp_lp, 2551 STMF_PROVIDER_DATA_UPDATED, ppd->ppd_nv, cb_flags); 2552 mutex_enter(&stmf_state.stmf_lock); 2553 ilp->ilp_cb_in_progress = 0; 2554 } else { 2555 ipp = (stmf_i_port_provider_t *)ppd->ppd_provider; 2556 if (ipp->ipp_pp->pp_cb == NULL) 2557 goto bail_out; 2558 ipp->ipp_cb_in_progress = 1; 2559 mutex_exit(&stmf_state.stmf_lock); 2560 ipp->ipp_pp->pp_cb(ipp->ipp_pp, 2561 STMF_PROVIDER_DATA_UPDATED, ppd->ppd_nv, cb_flags); 2562 mutex_enter(&stmf_state.stmf_lock); 2563 ipp->ipp_cb_in_progress = 0; 2564 } 2565 } 2566 2567 bail_out: 2568 mutex_exit(&stmf_state.stmf_lock); 2569 2570 return (0); 2571 } 2572 2573 void 2574 stmf_delete_ppd(stmf_pp_data_t *ppd) 2575 { 2576 stmf_pp_data_t **pppd; 2577 2578 ASSERT(mutex_owned(&stmf_state.stmf_lock)); 2579 if (ppd->ppd_provider) { 2580 if (ppd->ppd_lu_provider) { 2581 ((stmf_i_lu_provider_t *) 2582 ppd->ppd_provider)->ilp_ppd = NULL; 2583 } else { 2584 ((stmf_i_port_provider_t *) 2585 ppd->ppd_provider)->ipp_ppd = NULL; 2586 } 2587 ppd->ppd_provider = NULL; 2588 } 2589 2590 for (pppd = &stmf_state.stmf_ppdlist; *pppd != NULL; 2591 pppd = &((*pppd)->ppd_next)) { 2592 if (*pppd == ppd) 2593 break; 2594 } 2595 2596 if (*pppd == NULL) 2597 return; 2598 2599 *pppd = ppd->ppd_next; 2600 nvlist_free(ppd->ppd_nv); 2601 2602 kmem_free(ppd, ppd->ppd_alloc_size); 2603 } 2604 2605 int 2606 stmf_delete_ppd_ioctl(stmf_ppioctl_data_t *ppi) 2607 { 2608 stmf_pp_data_t *ppd; 2609 int ret = ENOENT; 2610 2611 if ((ppi->ppi_lu_provider + ppi->ppi_port_provider) != 1) { 2612 return (EINVAL); 2613 } 2614 2615 mutex_enter(&stmf_state.stmf_lock); 2616 2617 for (ppd = stmf_state.stmf_ppdlist; ppd != NULL; ppd = ppd->ppd_next) { 2618 if (ppi->ppi_lu_provider) { 2619 if (!ppd->ppd_lu_provider) 2620 continue; 2621 } else if (ppi->ppi_port_provider) { 2622 if (!ppd->ppd_port_provider) 2623 continue; 2624 } 2625 if (strncmp(ppi->ppi_name, ppd->ppd_name, 254) == 0) 2626 break; 2627 } 2628 2629 if (ppd) { 2630 ret = 0; 2631 stmf_delete_ppd(ppd); 2632 } 2633 mutex_exit(&stmf_state.stmf_lock); 2634 2635 return (ret); 2636 } 2637 2638 int 2639 stmf_get_ppd_ioctl(stmf_ppioctl_data_t *ppi, stmf_ppioctl_data_t *ppi_out, 2640 uint32_t *err_ret) 2641 { 2642 stmf_pp_data_t *ppd; 2643 size_t req_size; 2644 int ret = ENOENT; 2645 char *bufp = (char *)ppi_out->ppi_data; 2646 2647 if ((ppi->ppi_lu_provider + ppi->ppi_port_provider) != 1) { 2648 return (EINVAL); 2649 } 2650 2651 mutex_enter(&stmf_state.stmf_lock); 2652 2653 for (ppd = stmf_state.stmf_ppdlist; ppd != NULL; ppd = ppd->ppd_next) { 2654 if (ppi->ppi_lu_provider) { 2655 if (!ppd->ppd_lu_provider) 2656 continue; 2657 } else if (ppi->ppi_port_provider) { 2658 if (!ppd->ppd_port_provider) 2659 continue; 2660 } 2661 if (strncmp(ppi->ppi_name, ppd->ppd_name, 254) == 0) 2662 break; 2663 } 2664 2665 if (ppd && ppd->ppd_nv) { 2666 ppi_out->ppi_token = ppd->ppd_token; 2667 if ((ret = nvlist_size(ppd->ppd_nv, &req_size, 2668 NV_ENCODE_XDR)) != 0) { 2669 goto done; 2670 } 2671 ppi_out->ppi_data_size = req_size; 2672 if (req_size > ppi->ppi_data_size) { 2673 *err_ret = STMF_IOCERR_INSUFFICIENT_BUF; 2674 ret = EINVAL; 2675 goto done; 2676 } 2677 2678 if ((ret = nvlist_pack(ppd->ppd_nv, &bufp, &req_size, 2679 NV_ENCODE_XDR, 0)) != 0) { 2680 goto done; 2681 } 2682 ret = 0; 2683 } 2684 2685 done: 2686 mutex_exit(&stmf_state.stmf_lock); 2687 2688 return (ret); 2689 } 2690 2691 void 2692 stmf_delete_all_ppds() 2693 { 2694 stmf_pp_data_t *ppd, *nppd; 2695 2696 ASSERT(mutex_owned(&stmf_state.stmf_lock)); 2697 for (ppd = stmf_state.stmf_ppdlist; ppd != NULL; ppd = nppd) { 2698 nppd = ppd->ppd_next; 2699 stmf_delete_ppd(ppd); 2700 } 2701 } 2702 2703 /* 2704 * 16 is the max string length of a protocol_ident, increase 2705 * the size if needed. 2706 */ 2707 #define STMF_KSTAT_LU_SZ (STMF_GUID_INPUT + 1 + 256) 2708 #define STMF_KSTAT_TGT_SZ (256 * 2 + 16) 2709 2710 /* 2711 * This array matches the Protocol Identifier in stmf_ioctl.h 2712 */ 2713 #define MAX_PROTO_STR_LEN 32 2714 2715 char *protocol_ident[PROTOCOL_ANY] = { 2716 "Fibre Channel", 2717 "Parallel SCSI", 2718 "SSA", 2719 "IEEE_1394", 2720 "SRP", 2721 "iSCSI", 2722 "SAS", 2723 "ADT", 2724 "ATAPI", 2725 "UNKNOWN", "UNKNOWN", "UNKNOWN", "UNKNOWN", "UNKNOWN", "UNKNOWN" 2726 }; 2727 2728 /* 2729 * Update the lun wait/run queue count 2730 */ 2731 static void 2732 stmf_update_kstat_lu_q(scsi_task_t *task, void func()) 2733 { 2734 stmf_i_lu_t *ilu; 2735 kstat_io_t *kip; 2736 2737 if (task->task_lu == dlun0) 2738 return; 2739 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 2740 if (ilu != NULL && ilu->ilu_kstat_io != NULL) { 2741 kip = KSTAT_IO_PTR(ilu->ilu_kstat_io); 2742 if (kip != NULL) { 2743 func(kip); 2744 } 2745 } 2746 } 2747 2748 /* 2749 * Update the target(lport) wait/run queue count 2750 */ 2751 static void 2752 stmf_update_kstat_lport_q(scsi_task_t *task, void func()) 2753 { 2754 stmf_i_local_port_t *ilp; 2755 kstat_io_t *kip; 2756 2757 ilp = (stmf_i_local_port_t *)task->task_lport->lport_stmf_private; 2758 if (ilp != NULL && ilp->ilport_kstat_io != NULL) { 2759 kip = KSTAT_IO_PTR(ilp->ilport_kstat_io); 2760 if (kip != NULL) { 2761 mutex_enter(ilp->ilport_kstat_io->ks_lock); 2762 func(kip); 2763 mutex_exit(ilp->ilport_kstat_io->ks_lock); 2764 } 2765 } 2766 } 2767 2768 static void 2769 stmf_update_kstat_lport_io(scsi_task_t *task, stmf_data_buf_t *dbuf) 2770 { 2771 stmf_i_local_port_t *ilp; 2772 kstat_io_t *kip; 2773 2774 ilp = (stmf_i_local_port_t *)task->task_lport->lport_stmf_private; 2775 if (ilp != NULL && ilp->ilport_kstat_io != NULL) { 2776 kip = KSTAT_IO_PTR(ilp->ilport_kstat_io); 2777 if (kip != NULL) { 2778 mutex_enter(ilp->ilport_kstat_io->ks_lock); 2779 STMF_UPDATE_KSTAT_IO(kip, dbuf); 2780 mutex_exit(ilp->ilport_kstat_io->ks_lock); 2781 } 2782 } 2783 } 2784 2785 static void 2786 stmf_update_kstat_lu_io(scsi_task_t *task, stmf_data_buf_t *dbuf) 2787 { 2788 stmf_i_lu_t *ilu; 2789 kstat_io_t *kip; 2790 2791 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 2792 if (ilu != NULL && ilu->ilu_kstat_io != NULL) { 2793 kip = KSTAT_IO_PTR(ilu->ilu_kstat_io); 2794 if (kip != NULL) { 2795 mutex_enter(ilu->ilu_kstat_io->ks_lock); 2796 STMF_UPDATE_KSTAT_IO(kip, dbuf); 2797 mutex_exit(ilu->ilu_kstat_io->ks_lock); 2798 } 2799 } 2800 } 2801 2802 static void 2803 stmf_create_kstat_lu(stmf_i_lu_t *ilu) 2804 { 2805 char ks_nm[KSTAT_STRLEN]; 2806 stmf_kstat_lu_info_t *ks_lu; 2807 2808 /* create kstat lun info */ 2809 ks_lu = (stmf_kstat_lu_info_t *)kmem_zalloc(STMF_KSTAT_LU_SZ, 2810 KM_NOSLEEP); 2811 if (ks_lu == NULL) { 2812 cmn_err(CE_WARN, "STMF: kmem_zalloc failed"); 2813 return; 2814 } 2815 2816 bzero(ks_nm, sizeof (ks_nm)); 2817 (void) sprintf(ks_nm, "stmf_lu_%"PRIxPTR"", (uintptr_t)ilu); 2818 if ((ilu->ilu_kstat_info = kstat_create(STMF_MODULE_NAME, 0, 2819 ks_nm, "misc", KSTAT_TYPE_NAMED, 2820 sizeof (stmf_kstat_lu_info_t) / sizeof (kstat_named_t), 2821 KSTAT_FLAG_VIRTUAL)) == NULL) { 2822 kmem_free(ks_lu, STMF_KSTAT_LU_SZ); 2823 cmn_err(CE_WARN, "STMF: kstat_create lu failed"); 2824 return; 2825 } 2826 2827 ilu->ilu_kstat_info->ks_data_size = STMF_KSTAT_LU_SZ; 2828 ilu->ilu_kstat_info->ks_data = ks_lu; 2829 2830 kstat_named_init(&ks_lu->i_lun_guid, "lun-guid", 2831 KSTAT_DATA_STRING); 2832 kstat_named_init(&ks_lu->i_lun_alias, "lun-alias", 2833 KSTAT_DATA_STRING); 2834 2835 /* convert guid to hex string */ 2836 int i; 2837 uint8_t *p = ilu->ilu_lu->lu_id->ident; 2838 bzero(ilu->ilu_ascii_hex_guid, sizeof (ilu->ilu_ascii_hex_guid)); 2839 for (i = 0; i < STMF_GUID_INPUT / 2; i++) { 2840 (void) sprintf(&ilu->ilu_ascii_hex_guid[i * 2], "%02x", p[i]); 2841 } 2842 kstat_named_setstr(&ks_lu->i_lun_guid, 2843 (const char *)ilu->ilu_ascii_hex_guid); 2844 kstat_named_setstr(&ks_lu->i_lun_alias, 2845 (const char *)ilu->ilu_lu->lu_alias); 2846 kstat_install(ilu->ilu_kstat_info); 2847 2848 /* create kstat lun io */ 2849 bzero(ks_nm, sizeof (ks_nm)); 2850 (void) sprintf(ks_nm, "stmf_lu_io_%"PRIxPTR"", (uintptr_t)ilu); 2851 if ((ilu->ilu_kstat_io = kstat_create(STMF_MODULE_NAME, 0, 2852 ks_nm, "io", KSTAT_TYPE_IO, 1, 0)) == NULL) { 2853 cmn_err(CE_WARN, "STMF: kstat_create lu_io failed"); 2854 return; 2855 } 2856 mutex_init(&ilu->ilu_kstat_lock, NULL, MUTEX_DRIVER, 0); 2857 ilu->ilu_kstat_io->ks_lock = &ilu->ilu_kstat_lock; 2858 kstat_install(ilu->ilu_kstat_io); 2859 } 2860 2861 static void 2862 stmf_create_kstat_lport(stmf_i_local_port_t *ilport) 2863 { 2864 char ks_nm[KSTAT_STRLEN]; 2865 stmf_kstat_tgt_info_t *ks_tgt; 2866 int id, len; 2867 2868 /* create kstat lport info */ 2869 ks_tgt = (stmf_kstat_tgt_info_t *)kmem_zalloc(STMF_KSTAT_TGT_SZ, 2870 KM_NOSLEEP); 2871 if (ks_tgt == NULL) { 2872 cmn_err(CE_WARN, "STMF: kmem_zalloc failed"); 2873 return; 2874 } 2875 2876 bzero(ks_nm, sizeof (ks_nm)); 2877 (void) sprintf(ks_nm, "stmf_tgt_%"PRIxPTR"", (uintptr_t)ilport); 2878 if ((ilport->ilport_kstat_info = kstat_create(STMF_MODULE_NAME, 2879 0, ks_nm, "misc", KSTAT_TYPE_NAMED, 2880 sizeof (stmf_kstat_tgt_info_t) / sizeof (kstat_named_t), 2881 KSTAT_FLAG_VIRTUAL)) == NULL) { 2882 kmem_free(ks_tgt, STMF_KSTAT_TGT_SZ); 2883 cmn_err(CE_WARN, "STMF: kstat_create target failed"); 2884 return; 2885 } 2886 2887 ilport->ilport_kstat_info->ks_data_size = STMF_KSTAT_TGT_SZ; 2888 ilport->ilport_kstat_info->ks_data = ks_tgt; 2889 2890 kstat_named_init(&ks_tgt->i_tgt_name, "target-name", 2891 KSTAT_DATA_STRING); 2892 kstat_named_init(&ks_tgt->i_tgt_alias, "target-alias", 2893 KSTAT_DATA_STRING); 2894 kstat_named_init(&ks_tgt->i_protocol, "protocol", 2895 KSTAT_DATA_STRING); 2896 2897 /* ident might not be null terminated */ 2898 len = ilport->ilport_lport->lport_id->ident_length; 2899 bcopy(ilport->ilport_lport->lport_id->ident, 2900 ilport->ilport_kstat_tgt_name, len); 2901 ilport->ilport_kstat_tgt_name[len + 1] = NULL; 2902 kstat_named_setstr(&ks_tgt->i_tgt_name, 2903 (const char *)ilport->ilport_kstat_tgt_name); 2904 kstat_named_setstr(&ks_tgt->i_tgt_alias, 2905 (const char *)ilport->ilport_lport->lport_alias); 2906 /* protocol */ 2907 if ((id = ilport->ilport_lport->lport_id->protocol_id) > PROTOCOL_ANY) { 2908 cmn_err(CE_WARN, "STMF: protocol_id out of bound"); 2909 id = PROTOCOL_ANY; 2910 } 2911 kstat_named_setstr(&ks_tgt->i_protocol, protocol_ident[id]); 2912 kstat_install(ilport->ilport_kstat_info); 2913 2914 /* create kstat lport io */ 2915 bzero(ks_nm, sizeof (ks_nm)); 2916 (void) sprintf(ks_nm, "stmf_tgt_io_%"PRIxPTR"", (uintptr_t)ilport); 2917 if ((ilport->ilport_kstat_io = kstat_create(STMF_MODULE_NAME, 0, 2918 ks_nm, "io", KSTAT_TYPE_IO, 1, 0)) == NULL) { 2919 cmn_err(CE_WARN, "STMF: kstat_create target_io failed"); 2920 return; 2921 } 2922 mutex_init(&ilport->ilport_kstat_lock, NULL, MUTEX_DRIVER, 0); 2923 ilport->ilport_kstat_io->ks_lock = &ilport->ilport_kstat_lock; 2924 kstat_install(ilport->ilport_kstat_io); 2925 } 2926 2927 /* 2928 * set the asymmetric access state for a logical unit 2929 * caller is responsible for establishing SCSI unit attention on 2930 * state change 2931 */ 2932 stmf_status_t 2933 stmf_set_lu_access(stmf_lu_t *lu, uint8_t access_state) 2934 { 2935 stmf_i_lu_t *ilu; 2936 uint8_t *p1, *p2; 2937 2938 if ((access_state != STMF_LU_STANDBY) && 2939 (access_state != STMF_LU_ACTIVE)) { 2940 return (STMF_INVALID_ARG); 2941 } 2942 2943 p1 = &lu->lu_id->ident[0]; 2944 mutex_enter(&stmf_state.stmf_lock); 2945 if (stmf_state.stmf_inventory_locked) { 2946 mutex_exit(&stmf_state.stmf_lock); 2947 return (STMF_BUSY); 2948 } 2949 2950 for (ilu = stmf_state.stmf_ilulist; ilu != NULL; ilu = ilu->ilu_next) { 2951 p2 = &ilu->ilu_lu->lu_id->ident[0]; 2952 if (bcmp(p1, p2, 16) == 0) { 2953 break; 2954 } 2955 } 2956 2957 if (!ilu) { 2958 ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 2959 } else { 2960 /* 2961 * We're changing access state on an existing logical unit 2962 * Send the proxy registration message for this logical unit 2963 * if we're in alua mode. 2964 * If the requested state is STMF_LU_ACTIVE, we want to register 2965 * this logical unit. 2966 * If the requested state is STMF_LU_STANDBY, we're going to 2967 * abort all tasks for this logical unit. 2968 */ 2969 if (stmf_state.stmf_alua_state == 1 && 2970 access_state == STMF_LU_ACTIVE) { 2971 stmf_ic_msg_status_t ic_ret = STMF_IC_MSG_SUCCESS; 2972 stmf_ic_msg_t *ic_reg_lun; 2973 if (lu->lu_lp && lu->lu_lp->lp_lpif_rev == LPIF_REV_2 && 2974 lu->lu_lp->lp_alua_support) { 2975 ilu->ilu_alua = 1; 2976 /* allocate the register message */ 2977 ic_reg_lun = ic_lun_active_msg_alloc(p1, 2978 lu->lu_lp->lp_name, 2979 lu->lu_proxy_reg_arg_len, 2980 (uint8_t *)lu->lu_proxy_reg_arg, 2981 stmf_proxy_msg_id); 2982 /* send the message */ 2983 if (ic_reg_lun) { 2984 ic_ret = ic_tx_msg(ic_reg_lun); 2985 if (ic_ret == STMF_IC_MSG_SUCCESS) { 2986 stmf_proxy_msg_id++; 2987 } 2988 } 2989 } 2990 } else if (stmf_state.stmf_alua_state == 1 && 2991 access_state == STMF_LU_STANDBY) { 2992 /* abort all tasks for this lu */ 2993 stmf_task_lu_killall(lu, NULL, STMF_ABORTED); 2994 } 2995 } 2996 2997 ilu->ilu_access = access_state; 2998 2999 mutex_exit(&stmf_state.stmf_lock); 3000 return (STMF_SUCCESS); 3001 } 3002 3003 3004 stmf_status_t 3005 stmf_register_lu(stmf_lu_t *lu) 3006 { 3007 stmf_i_lu_t *ilu; 3008 uint8_t *p1, *p2; 3009 stmf_state_change_info_t ssci; 3010 stmf_id_data_t *luid; 3011 3012 if ((lu->lu_id->ident_type != ID_TYPE_NAA) || 3013 (lu->lu_id->ident_length != 16) || 3014 ((lu->lu_id->ident[0] & 0xf0) != 0x60)) { 3015 return (STMF_INVALID_ARG); 3016 } 3017 p1 = &lu->lu_id->ident[0]; 3018 mutex_enter(&stmf_state.stmf_lock); 3019 if (stmf_state.stmf_inventory_locked) { 3020 mutex_exit(&stmf_state.stmf_lock); 3021 return (STMF_BUSY); 3022 } 3023 3024 for (ilu = stmf_state.stmf_ilulist; ilu != NULL; ilu = ilu->ilu_next) { 3025 p2 = &ilu->ilu_lu->lu_id->ident[0]; 3026 if (bcmp(p1, p2, 16) == 0) { 3027 mutex_exit(&stmf_state.stmf_lock); 3028 return (STMF_ALREADY); 3029 } 3030 } 3031 3032 ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 3033 luid = stmf_lookup_id(&stmf_state.stmf_luid_list, 3034 lu->lu_id->ident_length, lu->lu_id->ident); 3035 if (luid) { 3036 luid->id_pt_to_object = (void *)ilu; 3037 ilu->ilu_luid = luid; 3038 } 3039 ilu->ilu_alias = NULL; 3040 3041 ilu->ilu_next = stmf_state.stmf_ilulist; 3042 ilu->ilu_prev = NULL; 3043 if (ilu->ilu_next) 3044 ilu->ilu_next->ilu_prev = ilu; 3045 stmf_state.stmf_ilulist = ilu; 3046 stmf_state.stmf_nlus++; 3047 if (lu->lu_lp) { 3048 ((stmf_i_lu_provider_t *) 3049 (lu->lu_lp->lp_stmf_private))->ilp_nlus++; 3050 } 3051 ilu->ilu_cur_task_cntr = &ilu->ilu_task_cntr1; 3052 STMF_EVENT_ALLOC_HANDLE(ilu->ilu_event_hdl); 3053 cv_init(&ilu->ilu_offline_pending_cv, NULL, CV_DRIVER, NULL); 3054 stmf_create_kstat_lu(ilu); 3055 /* 3056 * register with proxy module if available and logical unit 3057 * is in active state 3058 */ 3059 if (stmf_state.stmf_alua_state == 1 && 3060 ilu->ilu_access == STMF_LU_ACTIVE) { 3061 stmf_ic_msg_status_t ic_ret = STMF_IC_MSG_SUCCESS; 3062 stmf_ic_msg_t *ic_reg_lun; 3063 if (lu->lu_lp && lu->lu_lp->lp_lpif_rev == LPIF_REV_2 && 3064 lu->lu_lp->lp_alua_support) { 3065 ilu->ilu_alua = 1; 3066 /* allocate the register message */ 3067 ic_reg_lun = ic_reg_lun_msg_alloc(p1, 3068 lu->lu_lp->lp_name, lu->lu_proxy_reg_arg_len, 3069 (uint8_t *)lu->lu_proxy_reg_arg, stmf_proxy_msg_id); 3070 /* send the message */ 3071 if (ic_reg_lun) { 3072 ic_ret = ic_tx_msg(ic_reg_lun); 3073 if (ic_ret == STMF_IC_MSG_SUCCESS) { 3074 stmf_proxy_msg_id++; 3075 } 3076 } 3077 } 3078 } 3079 mutex_exit(&stmf_state.stmf_lock); 3080 3081 /* check the default state for lu */ 3082 if (stmf_state.stmf_default_lu_state == STMF_STATE_OFFLINE) { 3083 ilu->ilu_prev_state = STMF_STATE_OFFLINE; 3084 } else { 3085 ilu->ilu_prev_state = STMF_STATE_ONLINE; 3086 if (stmf_state.stmf_service_running) { 3087 ssci.st_rflags = 0; 3088 ssci.st_additional_info = NULL; 3089 (void) stmf_ctl(STMF_CMD_LU_ONLINE, lu, &ssci); 3090 } 3091 } 3092 3093 /* XXX: Generate event */ 3094 return (STMF_SUCCESS); 3095 } 3096 3097 stmf_status_t 3098 stmf_deregister_lu(stmf_lu_t *lu) 3099 { 3100 stmf_i_lu_t *ilu; 3101 3102 mutex_enter(&stmf_state.stmf_lock); 3103 if (stmf_state.stmf_inventory_locked) { 3104 mutex_exit(&stmf_state.stmf_lock); 3105 return (STMF_BUSY); 3106 } 3107 ilu = stmf_lookup_lu(lu); 3108 if (ilu == NULL) { 3109 mutex_exit(&stmf_state.stmf_lock); 3110 return (STMF_INVALID_ARG); 3111 } 3112 if (ilu->ilu_state == STMF_STATE_OFFLINE) { 3113 ASSERT(ilu->ilu_ntasks == ilu->ilu_ntasks_free); 3114 while (ilu->ilu_flags & ILU_STALL_DEREGISTER) { 3115 cv_wait(&stmf_state.stmf_cv, &stmf_state.stmf_lock); 3116 } 3117 if (ilu->ilu_ntasks) { 3118 stmf_i_scsi_task_t *itask, *nitask; 3119 3120 nitask = ilu->ilu_tasks; 3121 do { 3122 itask = nitask; 3123 nitask = itask->itask_lu_next; 3124 lu->lu_task_free(itask->itask_task); 3125 stmf_free(itask->itask_task); 3126 } while (nitask != NULL); 3127 3128 ilu->ilu_tasks = ilu->ilu_free_tasks = NULL; 3129 ilu->ilu_ntasks = ilu->ilu_ntasks_free = 0; 3130 } 3131 /* de-register with proxy if available */ 3132 if (ilu->ilu_access == STMF_LU_ACTIVE && 3133 stmf_state.stmf_alua_state == 1) { 3134 /* de-register with proxy module */ 3135 stmf_ic_msg_status_t ic_ret = STMF_IC_MSG_SUCCESS; 3136 stmf_ic_msg_t *ic_dereg_lun; 3137 if (lu->lu_lp && lu->lu_lp->lp_lpif_rev == LPIF_REV_2 && 3138 lu->lu_lp->lp_alua_support) { 3139 ilu->ilu_alua = 1; 3140 /* allocate the de-register message */ 3141 ic_dereg_lun = ic_dereg_lun_msg_alloc( 3142 lu->lu_id->ident, lu->lu_lp->lp_name, 0, 3143 NULL, stmf_proxy_msg_id); 3144 /* send the message */ 3145 if (ic_dereg_lun) { 3146 ic_ret = ic_tx_msg(ic_dereg_lun); 3147 if (ic_ret == STMF_IC_MSG_SUCCESS) { 3148 stmf_proxy_msg_id++; 3149 } 3150 } 3151 } 3152 } 3153 3154 if (ilu->ilu_next) 3155 ilu->ilu_next->ilu_prev = ilu->ilu_prev; 3156 if (ilu->ilu_prev) 3157 ilu->ilu_prev->ilu_next = ilu->ilu_next; 3158 else 3159 stmf_state.stmf_ilulist = ilu->ilu_next; 3160 stmf_state.stmf_nlus--; 3161 3162 if (ilu == stmf_state.stmf_svc_ilu_draining) { 3163 stmf_state.stmf_svc_ilu_draining = ilu->ilu_next; 3164 } 3165 if (ilu == stmf_state.stmf_svc_ilu_timing) { 3166 stmf_state.stmf_svc_ilu_timing = ilu->ilu_next; 3167 } 3168 if (lu->lu_lp) { 3169 ((stmf_i_lu_provider_t *) 3170 (lu->lu_lp->lp_stmf_private))->ilp_nlus--; 3171 } 3172 if (ilu->ilu_luid) { 3173 ((stmf_id_data_t *)ilu->ilu_luid)->id_pt_to_object = 3174 NULL; 3175 ilu->ilu_luid = NULL; 3176 } 3177 STMF_EVENT_FREE_HANDLE(ilu->ilu_event_hdl); 3178 } else { 3179 mutex_exit(&stmf_state.stmf_lock); 3180 return (STMF_BUSY); 3181 } 3182 if (ilu->ilu_kstat_info) { 3183 kmem_free(ilu->ilu_kstat_info->ks_data, 3184 ilu->ilu_kstat_info->ks_data_size); 3185 kstat_delete(ilu->ilu_kstat_info); 3186 } 3187 if (ilu->ilu_kstat_io) { 3188 kstat_delete(ilu->ilu_kstat_io); 3189 mutex_destroy(&ilu->ilu_kstat_lock); 3190 } 3191 cv_destroy(&ilu->ilu_offline_pending_cv); 3192 mutex_exit(&stmf_state.stmf_lock); 3193 return (STMF_SUCCESS); 3194 } 3195 3196 void 3197 stmf_set_port_standby(stmf_local_port_t *lport, uint16_t rtpid) 3198 { 3199 stmf_i_local_port_t *ilport = 3200 (stmf_i_local_port_t *)lport->lport_stmf_private; 3201 ilport->ilport_rtpid = rtpid; 3202 ilport->ilport_standby = 1; 3203 } 3204 3205 void 3206 stmf_set_port_alua(stmf_local_port_t *lport) 3207 { 3208 stmf_i_local_port_t *ilport = 3209 (stmf_i_local_port_t *)lport->lport_stmf_private; 3210 ilport->ilport_alua = 1; 3211 } 3212 3213 stmf_status_t 3214 stmf_register_local_port(stmf_local_port_t *lport) 3215 { 3216 stmf_i_local_port_t *ilport; 3217 stmf_state_change_info_t ssci; 3218 int start_workers = 0; 3219 3220 mutex_enter(&stmf_state.stmf_lock); 3221 if (stmf_state.stmf_inventory_locked) { 3222 mutex_exit(&stmf_state.stmf_lock); 3223 return (STMF_BUSY); 3224 } 3225 ilport = (stmf_i_local_port_t *)lport->lport_stmf_private; 3226 rw_init(&ilport->ilport_lock, NULL, RW_DRIVER, NULL); 3227 3228 ilport->ilport_instance = 3229 id_alloc_nosleep(stmf_state.stmf_ilport_inst_space); 3230 if (ilport->ilport_instance == -1) { 3231 mutex_exit(&stmf_state.stmf_lock); 3232 return (STMF_FAILURE); 3233 } 3234 ilport->ilport_next = stmf_state.stmf_ilportlist; 3235 ilport->ilport_prev = NULL; 3236 if (ilport->ilport_next) 3237 ilport->ilport_next->ilport_prev = ilport; 3238 stmf_state.stmf_ilportlist = ilport; 3239 stmf_state.stmf_nlports++; 3240 if (lport->lport_pp) { 3241 ((stmf_i_port_provider_t *) 3242 (lport->lport_pp->pp_stmf_private))->ipp_npps++; 3243 } 3244 ilport->ilport_tg = 3245 stmf_lookup_group_for_target(lport->lport_id->ident, 3246 lport->lport_id->ident_length); 3247 3248 /* 3249 * rtpid will/must be set if this is a standby port 3250 * only register ports that are not standby (proxy) ports 3251 * and ports that are alua participants (ilport_alua == 1) 3252 */ 3253 if (ilport->ilport_standby == 0) { 3254 ilport->ilport_rtpid = atomic_inc_16_nv(&stmf_rtpid_counter); 3255 } 3256 3257 if (stmf_state.stmf_alua_state == 1 && 3258 ilport->ilport_standby == 0 && 3259 ilport->ilport_alua == 1) { 3260 stmf_ic_msg_t *ic_reg_port; 3261 stmf_ic_msg_status_t ic_ret; 3262 stmf_local_port_t *lport; 3263 lport = ilport->ilport_lport; 3264 ic_reg_port = ic_reg_port_msg_alloc( 3265 lport->lport_id, ilport->ilport_rtpid, 3266 0, NULL, stmf_proxy_msg_id); 3267 if (ic_reg_port) { 3268 ic_ret = ic_tx_msg(ic_reg_port); 3269 if (ic_ret == STMF_IC_MSG_SUCCESS) { 3270 ilport->ilport_reg_msgid = stmf_proxy_msg_id++; 3271 } else { 3272 cmn_err(CE_WARN, "error on port registration " 3273 "port - %s", ilport->ilport_kstat_tgt_name); 3274 } 3275 } 3276 } 3277 STMF_EVENT_ALLOC_HANDLE(ilport->ilport_event_hdl); 3278 stmf_create_kstat_lport(ilport); 3279 if (stmf_workers_state == STMF_WORKERS_DISABLED) { 3280 stmf_workers_state = STMF_WORKERS_ENABLING; 3281 start_workers = 1; 3282 } 3283 mutex_exit(&stmf_state.stmf_lock); 3284 3285 if (start_workers) 3286 stmf_worker_init(); 3287 3288 /* the default state of LPORT */ 3289 3290 if (stmf_state.stmf_default_lport_state == STMF_STATE_OFFLINE) { 3291 ilport->ilport_prev_state = STMF_STATE_OFFLINE; 3292 } else { 3293 ilport->ilport_prev_state = STMF_STATE_ONLINE; 3294 if (stmf_state.stmf_service_running) { 3295 ssci.st_rflags = 0; 3296 ssci.st_additional_info = NULL; 3297 (void) stmf_ctl(STMF_CMD_LPORT_ONLINE, lport, &ssci); 3298 } 3299 } 3300 3301 /* XXX: Generate event */ 3302 return (STMF_SUCCESS); 3303 } 3304 3305 stmf_status_t 3306 stmf_deregister_local_port(stmf_local_port_t *lport) 3307 { 3308 stmf_i_local_port_t *ilport; 3309 3310 mutex_enter(&stmf_state.stmf_lock); 3311 if (stmf_state.stmf_inventory_locked) { 3312 mutex_exit(&stmf_state.stmf_lock); 3313 return (STMF_BUSY); 3314 } 3315 3316 /* dequeue all object requests from active queue */ 3317 stmf_svc_kill_obj_requests(lport); 3318 3319 ilport = (stmf_i_local_port_t *)lport->lport_stmf_private; 3320 3321 /* 3322 * deregister ports that are not standby (proxy) 3323 */ 3324 if (stmf_state.stmf_alua_state == 1 && 3325 ilport->ilport_standby == 0 && 3326 ilport->ilport_alua == 1) { 3327 stmf_ic_msg_t *ic_dereg_port; 3328 stmf_ic_msg_status_t ic_ret; 3329 ic_dereg_port = ic_dereg_port_msg_alloc( 3330 lport->lport_id, 0, NULL, stmf_proxy_msg_id); 3331 if (ic_dereg_port) { 3332 ic_ret = ic_tx_msg(ic_dereg_port); 3333 if (ic_ret == STMF_IC_MSG_SUCCESS) { 3334 stmf_proxy_msg_id++; 3335 } 3336 } 3337 } 3338 3339 if (ilport->ilport_nsessions == 0) { 3340 if (ilport->ilport_next) 3341 ilport->ilport_next->ilport_prev = ilport->ilport_prev; 3342 if (ilport->ilport_prev) 3343 ilport->ilport_prev->ilport_next = ilport->ilport_next; 3344 else 3345 stmf_state.stmf_ilportlist = ilport->ilport_next; 3346 id_free(stmf_state.stmf_ilport_inst_space, 3347 ilport->ilport_instance); 3348 rw_destroy(&ilport->ilport_lock); 3349 stmf_state.stmf_nlports--; 3350 if (lport->lport_pp) { 3351 ((stmf_i_port_provider_t *) 3352 (lport->lport_pp->pp_stmf_private))->ipp_npps--; 3353 } 3354 ilport->ilport_tg = NULL; 3355 STMF_EVENT_FREE_HANDLE(ilport->ilport_event_hdl); 3356 } else { 3357 mutex_exit(&stmf_state.stmf_lock); 3358 return (STMF_BUSY); 3359 } 3360 if (ilport->ilport_kstat_info) { 3361 kmem_free(ilport->ilport_kstat_info->ks_data, 3362 ilport->ilport_kstat_info->ks_data_size); 3363 kstat_delete(ilport->ilport_kstat_info); 3364 } 3365 if (ilport->ilport_kstat_io) { 3366 kstat_delete(ilport->ilport_kstat_io); 3367 mutex_destroy(&ilport->ilport_kstat_lock); 3368 } 3369 mutex_exit(&stmf_state.stmf_lock); 3370 return (STMF_SUCCESS); 3371 } 3372 3373 /* 3374 * Rport id/instance mappings remain valid until STMF is unloaded 3375 */ 3376 static int 3377 stmf_irport_compare(const void *void_irport1, const void *void_irport2) 3378 { 3379 const stmf_i_remote_port_t *irport1 = void_irport1; 3380 const stmf_i_remote_port_t *irport2 = void_irport2; 3381 int result; 3382 3383 /* Sort by code set then ident */ 3384 if (irport1->irport_id->code_set < 3385 irport2->irport_id->code_set) { 3386 return (-1); 3387 } else if (irport1->irport_id->code_set > 3388 irport2->irport_id->code_set) { 3389 return (1); 3390 } 3391 3392 /* Next by ident length */ 3393 if (irport1->irport_id->ident_length < 3394 irport2->irport_id->ident_length) { 3395 return (-1); 3396 } else if (irport1->irport_id->ident_length > 3397 irport2->irport_id->ident_length) { 3398 return (1); 3399 } 3400 3401 /* Code set and ident length both match, now compare idents */ 3402 result = memcmp(irport1->irport_id->ident, 3403 irport2->irport_id->ident, 3404 irport1->irport_id->ident_length); 3405 3406 if (result < 0) { 3407 return (-1); 3408 } else if (result > 0) { 3409 return (1); 3410 } 3411 3412 return (0); 3413 } 3414 3415 static stmf_i_remote_port_t * 3416 stmf_irport_create(scsi_devid_desc_t *rport_devid) 3417 { 3418 int alloc_len; 3419 stmf_i_remote_port_t *irport; 3420 3421 /* 3422 * Lookup will bump the refcnt if there's an existing rport 3423 * context for this identifier. 3424 */ 3425 ASSERT(mutex_owned(&stmf_state.stmf_lock)); 3426 3427 alloc_len = sizeof (*irport) + sizeof (scsi_devid_desc_t) + 3428 rport_devid->ident_length - 1; 3429 irport = kmem_zalloc(alloc_len, KM_NOSLEEP); 3430 if (irport == NULL) { 3431 return (NULL); 3432 } 3433 3434 irport->irport_instance = 3435 id_alloc_nosleep(stmf_state.stmf_irport_inst_space); 3436 if (irport->irport_instance == -1) { 3437 kmem_free(irport, alloc_len); 3438 return (NULL); 3439 } 3440 3441 irport->irport_id = 3442 (struct scsi_devid_desc *)(irport + 1); /* Ptr. Arith. */ 3443 bcopy(rport_devid, irport->irport_id, 3444 sizeof (scsi_devid_desc_t) + rport_devid->ident_length - 1); 3445 irport->irport_refcnt = 1; 3446 mutex_init(&irport->irport_mutex, NULL, MUTEX_DEFAULT, NULL); 3447 3448 return (irport); 3449 } 3450 3451 static void 3452 stmf_irport_destroy(stmf_i_remote_port_t *irport) 3453 { 3454 id_free(stmf_state.stmf_irport_inst_space, irport->irport_instance); 3455 mutex_destroy(&irport->irport_mutex); 3456 kmem_free(irport, sizeof (*irport) + sizeof (scsi_devid_desc_t) + 3457 irport->irport_id->ident_length - 1); 3458 } 3459 3460 static stmf_i_remote_port_t * 3461 stmf_irport_register(scsi_devid_desc_t *rport_devid) 3462 { 3463 stmf_i_remote_port_t *irport; 3464 3465 mutex_enter(&stmf_state.stmf_lock); 3466 3467 /* 3468 * Lookup will bump the refcnt if there's an existing rport 3469 * context for this identifier. 3470 */ 3471 if ((irport = stmf_irport_lookup_locked(rport_devid)) != NULL) { 3472 mutex_exit(&stmf_state.stmf_lock); 3473 return (irport); 3474 } 3475 3476 irport = stmf_irport_create(rport_devid); 3477 if (irport == NULL) { 3478 mutex_exit(&stmf_state.stmf_lock); 3479 return (NULL); 3480 } 3481 3482 avl_add(&stmf_state.stmf_irportlist, irport); 3483 mutex_exit(&stmf_state.stmf_lock); 3484 3485 return (irport); 3486 } 3487 3488 static stmf_i_remote_port_t * 3489 stmf_irport_lookup_locked(scsi_devid_desc_t *rport_devid) 3490 { 3491 stmf_i_remote_port_t *irport; 3492 stmf_i_remote_port_t tmp_irport; 3493 3494 ASSERT(mutex_owned(&stmf_state.stmf_lock)); 3495 tmp_irport.irport_id = rport_devid; 3496 irport = avl_find(&stmf_state.stmf_irportlist, &tmp_irport, NULL); 3497 if (irport != NULL) { 3498 mutex_enter(&irport->irport_mutex); 3499 irport->irport_refcnt++; 3500 mutex_exit(&irport->irport_mutex); 3501 } 3502 3503 return (irport); 3504 } 3505 3506 static void 3507 stmf_irport_deregister(stmf_i_remote_port_t *irport) 3508 { 3509 /* 3510 * If we were actually going to remove unreferenced remote ports 3511 * we would want to acquire stmf_state.stmf_lock before getting 3512 * the irport mutex. 3513 * 3514 * Instead we're just going to leave it there even if unreferenced. 3515 */ 3516 mutex_enter(&irport->irport_mutex); 3517 irport->irport_refcnt--; 3518 mutex_exit(&irport->irport_mutex); 3519 } 3520 3521 /* 3522 * Port provider has to make sure that register/deregister session and 3523 * port are serialized calls. 3524 */ 3525 stmf_status_t 3526 stmf_register_scsi_session(stmf_local_port_t *lport, stmf_scsi_session_t *ss) 3527 { 3528 stmf_i_scsi_session_t *iss; 3529 stmf_i_local_port_t *ilport = (stmf_i_local_port_t *) 3530 lport->lport_stmf_private; 3531 uint8_t lun[8]; 3532 3533 /* 3534 * Port state has to be online to register a scsi session. It is 3535 * possible that we started an offline operation and a new SCSI 3536 * session started at the same time (in that case also we are going 3537 * to fail the registeration). But any other state is simply 3538 * a bad port provider implementation. 3539 */ 3540 if (ilport->ilport_state != STMF_STATE_ONLINE) { 3541 if (ilport->ilport_state != STMF_STATE_OFFLINING) { 3542 stmf_trace(lport->lport_alias, "Port is trying to " 3543 "register a session while the state is neither " 3544 "online nor offlining"); 3545 } 3546 return (STMF_FAILURE); 3547 } 3548 bzero(lun, 8); 3549 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private; 3550 if ((iss->iss_irport = stmf_irport_register(ss->ss_rport_id)) == NULL) { 3551 stmf_trace(lport->lport_alias, "Could not register " 3552 "remote port during session registration"); 3553 return (STMF_FAILURE); 3554 } 3555 3556 iss->iss_flags |= ISS_BEING_CREATED; 3557 3558 if (ss->ss_rport == NULL) { 3559 iss->iss_flags |= ISS_NULL_TPTID; 3560 ss->ss_rport = stmf_scsilib_devid_to_remote_port( 3561 ss->ss_rport_id); 3562 if (ss->ss_rport == NULL) { 3563 iss->iss_flags &= ~(ISS_NULL_TPTID | ISS_BEING_CREATED); 3564 stmf_trace(lport->lport_alias, "Device id to " 3565 "remote port conversion failed"); 3566 return (STMF_FAILURE); 3567 } 3568 } else { 3569 if (!stmf_scsilib_tptid_validate(ss->ss_rport->rport_tptid, 3570 ss->ss_rport->rport_tptid_sz, NULL)) { 3571 iss->iss_flags &= ~ISS_BEING_CREATED; 3572 stmf_trace(lport->lport_alias, "Remote port " 3573 "transport id validation failed"); 3574 return (STMF_FAILURE); 3575 } 3576 } 3577 3578 /* sessions use the ilport_lock. No separate lock is required */ 3579 iss->iss_lockp = &ilport->ilport_lock; 3580 3581 if (iss->iss_sm != NULL) 3582 cmn_err(CE_PANIC, "create lun map called with non NULL map"); 3583 iss->iss_sm = (stmf_lun_map_t *)kmem_zalloc(sizeof (stmf_lun_map_t), 3584 KM_SLEEP); 3585 3586 mutex_enter(&stmf_state.stmf_lock); 3587 rw_enter(&ilport->ilport_lock, RW_WRITER); 3588 (void) stmf_session_create_lun_map(ilport, iss); 3589 ilport->ilport_nsessions++; 3590 iss->iss_next = ilport->ilport_ss_list; 3591 ilport->ilport_ss_list = iss; 3592 rw_exit(&ilport->ilport_lock); 3593 mutex_exit(&stmf_state.stmf_lock); 3594 3595 iss->iss_creation_time = ddi_get_time(); 3596 ss->ss_session_id = atomic_inc_64_nv(&stmf_session_counter); 3597 iss->iss_flags &= ~ISS_BEING_CREATED; 3598 /* XXX should we remove ISS_LUN_INVENTORY_CHANGED on new session? */ 3599 iss->iss_flags &= ~ISS_LUN_INVENTORY_CHANGED; 3600 DTRACE_PROBE2(session__online, stmf_local_port_t *, lport, 3601 stmf_scsi_session_t *, ss); 3602 return (STMF_SUCCESS); 3603 } 3604 3605 void 3606 stmf_deregister_scsi_session(stmf_local_port_t *lport, stmf_scsi_session_t *ss) 3607 { 3608 stmf_i_local_port_t *ilport = (stmf_i_local_port_t *) 3609 lport->lport_stmf_private; 3610 stmf_i_scsi_session_t *iss, **ppss; 3611 int found = 0; 3612 stmf_ic_msg_t *ic_session_dereg; 3613 stmf_status_t ic_ret = STMF_FAILURE; 3614 3615 DTRACE_PROBE2(session__offline, stmf_local_port_t *, lport, 3616 stmf_scsi_session_t *, ss); 3617 3618 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private; 3619 if (ss->ss_rport_alias) { 3620 ss->ss_rport_alias = NULL; 3621 } 3622 3623 try_dereg_ss_again: 3624 mutex_enter(&stmf_state.stmf_lock); 3625 atomic_and_32(&iss->iss_flags, 3626 ~(ISS_LUN_INVENTORY_CHANGED | ISS_GOT_INITIAL_LUNS)); 3627 if (iss->iss_flags & ISS_EVENT_ACTIVE) { 3628 mutex_exit(&stmf_state.stmf_lock); 3629 delay(1); 3630 goto try_dereg_ss_again; 3631 } 3632 3633 /* dereg proxy session if not standby port */ 3634 if (stmf_state.stmf_alua_state == 1 && 3635 ilport->ilport_standby == 0 && 3636 ilport->ilport_alua == 1) { 3637 ic_session_dereg = ic_session_dereg_msg_alloc( 3638 ss, stmf_proxy_msg_id); 3639 if (ic_session_dereg) { 3640 ic_ret = ic_tx_msg(ic_session_dereg); 3641 if (ic_ret == STMF_IC_MSG_SUCCESS) { 3642 stmf_proxy_msg_id++; 3643 } 3644 } 3645 } 3646 3647 rw_enter(&ilport->ilport_lock, RW_WRITER); 3648 for (ppss = &ilport->ilport_ss_list; *ppss != NULL; 3649 ppss = &((*ppss)->iss_next)) { 3650 if (iss == (*ppss)) { 3651 *ppss = (*ppss)->iss_next; 3652 found = 1; 3653 break; 3654 } 3655 } 3656 if (!found) { 3657 cmn_err(CE_PANIC, "Deregister session called for non existent" 3658 " session"); 3659 } 3660 ilport->ilport_nsessions--; 3661 3662 stmf_irport_deregister(iss->iss_irport); 3663 (void) stmf_session_destroy_lun_map(ilport, iss); 3664 rw_exit(&ilport->ilport_lock); 3665 mutex_exit(&stmf_state.stmf_lock); 3666 3667 if (iss->iss_flags & ISS_NULL_TPTID) { 3668 stmf_remote_port_free(ss->ss_rport); 3669 } 3670 } 3671 3672 stmf_i_scsi_session_t * 3673 stmf_session_id_to_issptr(uint64_t session_id, int stay_locked) 3674 { 3675 stmf_i_local_port_t *ilport; 3676 stmf_i_scsi_session_t *iss; 3677 3678 mutex_enter(&stmf_state.stmf_lock); 3679 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL; 3680 ilport = ilport->ilport_next) { 3681 rw_enter(&ilport->ilport_lock, RW_WRITER); 3682 for (iss = ilport->ilport_ss_list; iss != NULL; 3683 iss = iss->iss_next) { 3684 if (iss->iss_ss->ss_session_id == session_id) { 3685 if (!stay_locked) 3686 rw_exit(&ilport->ilport_lock); 3687 mutex_exit(&stmf_state.stmf_lock); 3688 return (iss); 3689 } 3690 } 3691 rw_exit(&ilport->ilport_lock); 3692 } 3693 mutex_exit(&stmf_state.stmf_lock); 3694 return (NULL); 3695 } 3696 3697 void 3698 stmf_release_itl_handle(stmf_lu_t *lu, stmf_itl_data_t *itl) 3699 { 3700 stmf_itl_data_t **itlpp; 3701 stmf_i_lu_t *ilu; 3702 3703 ASSERT(itl->itl_flags & STMF_ITL_BEING_TERMINATED); 3704 3705 ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 3706 mutex_enter(&ilu->ilu_task_lock); 3707 for (itlpp = &ilu->ilu_itl_list; (*itlpp) != NULL; 3708 itlpp = &(*itlpp)->itl_next) { 3709 if ((*itlpp) == itl) 3710 break; 3711 } 3712 ASSERT((*itlpp) != NULL); 3713 *itlpp = itl->itl_next; 3714 mutex_exit(&ilu->ilu_task_lock); 3715 lu->lu_abort(lu, STMF_LU_ITL_HANDLE_REMOVED, itl->itl_handle, 3716 (uint32_t)itl->itl_hdlrm_reason); 3717 3718 kmem_free(itl, sizeof (*itl)); 3719 } 3720 3721 stmf_status_t 3722 stmf_register_itl_handle(stmf_lu_t *lu, uint8_t *lun, 3723 stmf_scsi_session_t *ss, uint64_t session_id, void *itl_handle) 3724 { 3725 stmf_itl_data_t *itl; 3726 stmf_i_scsi_session_t *iss; 3727 stmf_lun_map_ent_t *lun_map_ent; 3728 stmf_i_lu_t *ilu; 3729 uint16_t n; 3730 3731 ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 3732 if (ss == NULL) { 3733 iss = stmf_session_id_to_issptr(session_id, 1); 3734 if (iss == NULL) 3735 return (STMF_NOT_FOUND); 3736 } else { 3737 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private; 3738 } 3739 3740 mutex_enter(&stmf_state.stmf_lock); 3741 rw_enter(iss->iss_lockp, RW_WRITER); 3742 n = ((uint16_t)lun[1] | (((uint16_t)(lun[0] & 0x3F)) << 8)); 3743 lun_map_ent = (stmf_lun_map_ent_t *) 3744 stmf_get_ent_from_map(iss->iss_sm, n); 3745 if ((lun_map_ent == NULL) || (lun_map_ent->ent_lu != lu)) { 3746 rw_exit(iss->iss_lockp); 3747 mutex_exit(&stmf_state.stmf_lock); 3748 return (STMF_NOT_FOUND); 3749 } 3750 if (lun_map_ent->ent_itl_datap != NULL) { 3751 rw_exit(iss->iss_lockp); 3752 mutex_exit(&stmf_state.stmf_lock); 3753 return (STMF_ALREADY); 3754 } 3755 3756 itl = (stmf_itl_data_t *)kmem_zalloc(sizeof (*itl), KM_NOSLEEP); 3757 if (itl == NULL) { 3758 rw_exit(iss->iss_lockp); 3759 mutex_exit(&stmf_state.stmf_lock); 3760 return (STMF_ALLOC_FAILURE); 3761 } 3762 3763 itl->itl_ilu = ilu; 3764 itl->itl_session = iss; 3765 itl->itl_counter = 1; 3766 itl->itl_lun = n; 3767 itl->itl_handle = itl_handle; 3768 3769 mutex_enter(&ilu->ilu_task_lock); 3770 itl->itl_next = ilu->ilu_itl_list; 3771 ilu->ilu_itl_list = itl; 3772 mutex_exit(&ilu->ilu_task_lock); 3773 lun_map_ent->ent_itl_datap = itl; 3774 rw_exit(iss->iss_lockp); 3775 mutex_exit(&stmf_state.stmf_lock); 3776 3777 return (STMF_SUCCESS); 3778 } 3779 3780 void 3781 stmf_do_itl_dereg(stmf_lu_t *lu, stmf_itl_data_t *itl, uint8_t hdlrm_reason) 3782 { 3783 uint8_t old, new; 3784 3785 do { 3786 old = new = itl->itl_flags; 3787 if (old & STMF_ITL_BEING_TERMINATED) 3788 return; 3789 new |= STMF_ITL_BEING_TERMINATED; 3790 } while (atomic_cas_8(&itl->itl_flags, old, new) != old); 3791 itl->itl_hdlrm_reason = hdlrm_reason; 3792 3793 ASSERT(itl->itl_counter); 3794 3795 if (atomic_dec_32_nv(&itl->itl_counter)) 3796 return; 3797 3798 stmf_release_itl_handle(lu, itl); 3799 } 3800 3801 stmf_status_t 3802 stmf_deregister_all_lu_itl_handles(stmf_lu_t *lu) 3803 { 3804 stmf_i_lu_t *ilu; 3805 stmf_i_local_port_t *ilport; 3806 stmf_i_scsi_session_t *iss; 3807 stmf_lun_map_t *lm; 3808 stmf_lun_map_ent_t *ent; 3809 uint32_t nmaps, nu; 3810 stmf_itl_data_t **itl_list; 3811 int i; 3812 3813 ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 3814 3815 dereg_itl_start:; 3816 nmaps = ilu->ilu_ref_cnt; 3817 if (nmaps == 0) 3818 return (STMF_NOT_FOUND); 3819 itl_list = (stmf_itl_data_t **)kmem_zalloc( 3820 nmaps * sizeof (stmf_itl_data_t *), KM_SLEEP); 3821 mutex_enter(&stmf_state.stmf_lock); 3822 if (nmaps != ilu->ilu_ref_cnt) { 3823 /* Something changed, start all over */ 3824 mutex_exit(&stmf_state.stmf_lock); 3825 kmem_free(itl_list, nmaps * sizeof (stmf_itl_data_t *)); 3826 goto dereg_itl_start; 3827 } 3828 nu = 0; 3829 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL; 3830 ilport = ilport->ilport_next) { 3831 rw_enter(&ilport->ilport_lock, RW_WRITER); 3832 for (iss = ilport->ilport_ss_list; iss != NULL; 3833 iss = iss->iss_next) { 3834 lm = iss->iss_sm; 3835 if (!lm) 3836 continue; 3837 for (i = 0; i < lm->lm_nentries; i++) { 3838 if (lm->lm_plus[i] == NULL) 3839 continue; 3840 ent = (stmf_lun_map_ent_t *)lm->lm_plus[i]; 3841 if ((ent->ent_lu == lu) && 3842 (ent->ent_itl_datap)) { 3843 itl_list[nu++] = ent->ent_itl_datap; 3844 ent->ent_itl_datap = NULL; 3845 if (nu == nmaps) { 3846 rw_exit(&ilport->ilport_lock); 3847 goto dai_scan_done; 3848 } 3849 } 3850 } /* lun table for a session */ 3851 } /* sessions */ 3852 rw_exit(&ilport->ilport_lock); 3853 } /* ports */ 3854 3855 dai_scan_done: 3856 mutex_exit(&stmf_state.stmf_lock); 3857 3858 for (i = 0; i < nu; i++) { 3859 stmf_do_itl_dereg(lu, itl_list[i], 3860 STMF_ITL_REASON_DEREG_REQUEST); 3861 } 3862 kmem_free(itl_list, nmaps * sizeof (stmf_itl_data_t *)); 3863 3864 return (STMF_SUCCESS); 3865 } 3866 3867 stmf_status_t 3868 stmf_get_itl_handle(stmf_lu_t *lu, uint8_t *lun, stmf_scsi_session_t *ss, 3869 uint64_t session_id, void **itl_handle_retp) 3870 { 3871 stmf_i_scsi_session_t *iss; 3872 stmf_lun_map_ent_t *ent; 3873 stmf_lun_map_t *lm; 3874 stmf_status_t ret; 3875 int i; 3876 uint16_t n; 3877 3878 if (ss == NULL) { 3879 iss = stmf_session_id_to_issptr(session_id, 1); 3880 if (iss == NULL) 3881 return (STMF_NOT_FOUND); 3882 } else { 3883 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private; 3884 rw_enter(iss->iss_lockp, RW_WRITER); 3885 } 3886 3887 ent = NULL; 3888 if (lun == NULL) { 3889 lm = iss->iss_sm; 3890 for (i = 0; i < lm->lm_nentries; i++) { 3891 if (lm->lm_plus[i] == NULL) 3892 continue; 3893 ent = (stmf_lun_map_ent_t *)lm->lm_plus[i]; 3894 if (ent->ent_lu == lu) 3895 break; 3896 } 3897 } else { 3898 n = ((uint16_t)lun[1] | (((uint16_t)(lun[0] & 0x3F)) << 8)); 3899 ent = (stmf_lun_map_ent_t *) 3900 stmf_get_ent_from_map(iss->iss_sm, n); 3901 if (lu && (ent->ent_lu != lu)) 3902 ent = NULL; 3903 } 3904 if (ent && ent->ent_itl_datap) { 3905 *itl_handle_retp = ent->ent_itl_datap->itl_handle; 3906 ret = STMF_SUCCESS; 3907 } else { 3908 ret = STMF_NOT_FOUND; 3909 } 3910 3911 rw_exit(iss->iss_lockp); 3912 return (ret); 3913 } 3914 3915 stmf_data_buf_t * 3916 stmf_alloc_dbuf(scsi_task_t *task, uint32_t size, uint32_t *pminsize, 3917 uint32_t flags) 3918 { 3919 stmf_i_scsi_task_t *itask = 3920 (stmf_i_scsi_task_t *)task->task_stmf_private; 3921 stmf_local_port_t *lport = task->task_lport; 3922 stmf_data_buf_t *dbuf; 3923 uint8_t ndx; 3924 3925 ndx = stmf_first_zero[itask->itask_allocated_buf_map]; 3926 if (ndx == 0xff) 3927 return (NULL); 3928 dbuf = itask->itask_dbufs[ndx] = lport->lport_ds->ds_alloc_data_buf( 3929 task, size, pminsize, flags); 3930 if (dbuf) { 3931 task->task_cur_nbufs++; 3932 itask->itask_allocated_buf_map |= (1 << ndx); 3933 dbuf->db_flags &= ~DB_LPORT_XFER_ACTIVE; 3934 dbuf->db_handle = ndx; 3935 return (dbuf); 3936 } 3937 3938 return (NULL); 3939 } 3940 3941 stmf_status_t 3942 stmf_setup_dbuf(scsi_task_t *task, stmf_data_buf_t *dbuf, uint32_t flags) 3943 { 3944 stmf_i_scsi_task_t *itask = 3945 (stmf_i_scsi_task_t *)task->task_stmf_private; 3946 stmf_local_port_t *lport = task->task_lport; 3947 uint8_t ndx; 3948 stmf_status_t ret; 3949 3950 ASSERT(task->task_additional_flags & TASK_AF_ACCEPT_LU_DBUF); 3951 ASSERT(lport->lport_ds->ds_setup_dbuf != NULL); 3952 ASSERT(dbuf->db_flags & DB_LU_DATA_BUF); 3953 3954 if ((task->task_additional_flags & TASK_AF_ACCEPT_LU_DBUF) == 0) 3955 return (STMF_FAILURE); 3956 if (lport->lport_ds->ds_setup_dbuf == NULL) 3957 return (STMF_FAILURE); 3958 3959 ndx = stmf_first_zero[itask->itask_allocated_buf_map]; 3960 if (ndx == 0xff) 3961 return (STMF_FAILURE); 3962 ret = lport->lport_ds->ds_setup_dbuf(task, dbuf, flags); 3963 if (ret == STMF_FAILURE) 3964 return (STMF_FAILURE); 3965 itask->itask_dbufs[ndx] = dbuf; 3966 task->task_cur_nbufs++; 3967 itask->itask_allocated_buf_map |= (1 << ndx); 3968 dbuf->db_handle = ndx; 3969 3970 return (STMF_SUCCESS); 3971 } 3972 3973 void 3974 stmf_teardown_dbuf(scsi_task_t *task, stmf_data_buf_t *dbuf) 3975 { 3976 stmf_i_scsi_task_t *itask = 3977 (stmf_i_scsi_task_t *)task->task_stmf_private; 3978 stmf_local_port_t *lport = task->task_lport; 3979 3980 ASSERT(task->task_additional_flags & TASK_AF_ACCEPT_LU_DBUF); 3981 ASSERT(lport->lport_ds->ds_teardown_dbuf != NULL); 3982 ASSERT(dbuf->db_flags & DB_LU_DATA_BUF); 3983 3984 itask->itask_allocated_buf_map &= ~(1 << dbuf->db_handle); 3985 task->task_cur_nbufs--; 3986 lport->lport_ds->ds_teardown_dbuf(lport->lport_ds, dbuf); 3987 } 3988 3989 void 3990 stmf_free_dbuf(scsi_task_t *task, stmf_data_buf_t *dbuf) 3991 { 3992 stmf_i_scsi_task_t *itask = 3993 (stmf_i_scsi_task_t *)task->task_stmf_private; 3994 stmf_local_port_t *lport = task->task_lport; 3995 3996 itask->itask_allocated_buf_map &= ~(1 << dbuf->db_handle); 3997 task->task_cur_nbufs--; 3998 lport->lport_ds->ds_free_data_buf(lport->lport_ds, dbuf); 3999 } 4000 4001 stmf_data_buf_t * 4002 stmf_handle_to_buf(scsi_task_t *task, uint8_t h) 4003 { 4004 stmf_i_scsi_task_t *itask; 4005 4006 itask = (stmf_i_scsi_task_t *)task->task_stmf_private; 4007 if (h > 3) 4008 return (NULL); 4009 return (itask->itask_dbufs[h]); 4010 } 4011 4012 /* ARGSUSED */ 4013 struct scsi_task * 4014 stmf_task_alloc(struct stmf_local_port *lport, stmf_scsi_session_t *ss, 4015 uint8_t *lun, uint16_t cdb_length_in, uint16_t ext_id) 4016 { 4017 stmf_lu_t *lu; 4018 stmf_i_scsi_session_t *iss; 4019 stmf_i_lu_t *ilu; 4020 stmf_i_scsi_task_t *itask; 4021 stmf_i_scsi_task_t **ppitask; 4022 scsi_task_t *task; 4023 uint8_t *l; 4024 stmf_lun_map_ent_t *lun_map_ent; 4025 uint16_t cdb_length; 4026 uint16_t luNbr; 4027 uint8_t new_task = 0; 4028 4029 /* 4030 * We allocate 7 extra bytes for CDB to provide a cdb pointer which 4031 * is guaranteed to be 8 byte aligned. Some LU providers like OSD 4032 * depend upon this alignment. 4033 */ 4034 if (cdb_length_in >= 16) 4035 cdb_length = cdb_length_in + 7; 4036 else 4037 cdb_length = 16 + 7; 4038 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private; 4039 luNbr = ((uint16_t)lun[1] | (((uint16_t)(lun[0] & 0x3F)) << 8)); 4040 rw_enter(iss->iss_lockp, RW_READER); 4041 lun_map_ent = 4042 (stmf_lun_map_ent_t *)stmf_get_ent_from_map(iss->iss_sm, luNbr); 4043 if (!lun_map_ent) { 4044 lu = dlun0; 4045 } else { 4046 lu = lun_map_ent->ent_lu; 4047 } 4048 ilu = lu->lu_stmf_private; 4049 if (ilu->ilu_flags & ILU_RESET_ACTIVE) { 4050 rw_exit(iss->iss_lockp); 4051 return (NULL); 4052 } 4053 ASSERT(lu == dlun0 || (ilu->ilu_state != STMF_STATE_OFFLINING && 4054 ilu->ilu_state != STMF_STATE_OFFLINE)); 4055 do { 4056 if (ilu->ilu_free_tasks == NULL) { 4057 new_task = 1; 4058 break; 4059 } 4060 mutex_enter(&ilu->ilu_task_lock); 4061 for (ppitask = &ilu->ilu_free_tasks; (*ppitask != NULL) && 4062 ((*ppitask)->itask_cdb_buf_size < cdb_length); 4063 ppitask = &((*ppitask)->itask_lu_free_next)) 4064 ; 4065 if (*ppitask) { 4066 itask = *ppitask; 4067 *ppitask = (*ppitask)->itask_lu_free_next; 4068 ilu->ilu_ntasks_free--; 4069 if (ilu->ilu_ntasks_free < ilu->ilu_ntasks_min_free) 4070 ilu->ilu_ntasks_min_free = ilu->ilu_ntasks_free; 4071 } else { 4072 new_task = 1; 4073 } 4074 mutex_exit(&ilu->ilu_task_lock); 4075 /* CONSTCOND */ 4076 } while (0); 4077 4078 if (!new_task) { 4079 /* 4080 * Save the task_cdb pointer and zero per cmd fields. 4081 * We know the task_cdb_length is large enough by task 4082 * selection process above. 4083 */ 4084 uint8_t *save_cdb; 4085 uintptr_t t_start, t_end; 4086 4087 task = itask->itask_task; 4088 save_cdb = task->task_cdb; /* save */ 4089 t_start = (uintptr_t)&task->task_flags; 4090 t_end = (uintptr_t)&task->task_extended_cmd; 4091 bzero((void *)t_start, (size_t)(t_end - t_start)); 4092 task->task_cdb = save_cdb; /* restore */ 4093 itask->itask_ncmds = 0; 4094 } else { 4095 task = (scsi_task_t *)stmf_alloc(STMF_STRUCT_SCSI_TASK, 4096 cdb_length, AF_FORCE_NOSLEEP); 4097 if (task == NULL) { 4098 rw_exit(iss->iss_lockp); 4099 return (NULL); 4100 } 4101 task->task_lu = lu; 4102 l = task->task_lun_no; 4103 l[0] = lun[0]; 4104 l[1] = lun[1]; 4105 l[2] = lun[2]; 4106 l[3] = lun[3]; 4107 l[4] = lun[4]; 4108 l[5] = lun[5]; 4109 l[6] = lun[6]; 4110 l[7] = lun[7]; 4111 task->task_cdb = (uint8_t *)task->task_port_private; 4112 if ((ulong_t)(task->task_cdb) & 7ul) { 4113 task->task_cdb = (uint8_t *)(((ulong_t) 4114 (task->task_cdb) + 7ul) & ~(7ul)); 4115 } 4116 itask = (stmf_i_scsi_task_t *)task->task_stmf_private; 4117 itask->itask_cdb_buf_size = cdb_length; 4118 mutex_init(&itask->itask_audit_mutex, NULL, MUTEX_DRIVER, NULL); 4119 } 4120 task->task_session = ss; 4121 task->task_lport = lport; 4122 task->task_cdb_length = cdb_length_in; 4123 itask->itask_flags = ITASK_IN_TRANSITION; 4124 itask->itask_waitq_time = 0; 4125 itask->itask_lu_read_time = itask->itask_lu_write_time = 0; 4126 itask->itask_lport_read_time = itask->itask_lport_write_time = 0; 4127 itask->itask_read_xfer = itask->itask_write_xfer = 0; 4128 itask->itask_audit_index = 0; 4129 4130 if (new_task) { 4131 if (lu->lu_task_alloc(task) != STMF_SUCCESS) { 4132 rw_exit(iss->iss_lockp); 4133 stmf_free(task); 4134 return (NULL); 4135 } 4136 mutex_enter(&ilu->ilu_task_lock); 4137 if (ilu->ilu_flags & ILU_RESET_ACTIVE) { 4138 mutex_exit(&ilu->ilu_task_lock); 4139 rw_exit(iss->iss_lockp); 4140 stmf_free(task); 4141 return (NULL); 4142 } 4143 itask->itask_lu_next = ilu->ilu_tasks; 4144 if (ilu->ilu_tasks) 4145 ilu->ilu_tasks->itask_lu_prev = itask; 4146 ilu->ilu_tasks = itask; 4147 /* kmem_zalloc automatically makes itask->itask_lu_prev NULL */ 4148 ilu->ilu_ntasks++; 4149 mutex_exit(&ilu->ilu_task_lock); 4150 } 4151 4152 itask->itask_ilu_task_cntr = ilu->ilu_cur_task_cntr; 4153 atomic_inc_32(itask->itask_ilu_task_cntr); 4154 itask->itask_start_time = ddi_get_lbolt(); 4155 4156 if ((lun_map_ent != NULL) && ((itask->itask_itl_datap = 4157 lun_map_ent->ent_itl_datap) != NULL)) { 4158 atomic_inc_32(&itask->itask_itl_datap->itl_counter); 4159 task->task_lu_itl_handle = itask->itask_itl_datap->itl_handle; 4160 } else { 4161 itask->itask_itl_datap = NULL; 4162 task->task_lu_itl_handle = NULL; 4163 } 4164 4165 rw_exit(iss->iss_lockp); 4166 return (task); 4167 } 4168 4169 static void 4170 stmf_task_lu_free(scsi_task_t *task, stmf_i_scsi_session_t *iss) 4171 { 4172 stmf_i_scsi_task_t *itask = 4173 (stmf_i_scsi_task_t *)task->task_stmf_private; 4174 stmf_i_lu_t *ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 4175 4176 ASSERT(rw_lock_held(iss->iss_lockp)); 4177 itask->itask_flags = ITASK_IN_FREE_LIST; 4178 itask->itask_proxy_msg_id = 0; 4179 mutex_enter(&ilu->ilu_task_lock); 4180 itask->itask_lu_free_next = ilu->ilu_free_tasks; 4181 ilu->ilu_free_tasks = itask; 4182 ilu->ilu_ntasks_free++; 4183 if (ilu->ilu_ntasks == ilu->ilu_ntasks_free) 4184 cv_signal(&ilu->ilu_offline_pending_cv); 4185 mutex_exit(&ilu->ilu_task_lock); 4186 atomic_dec_32(itask->itask_ilu_task_cntr); 4187 } 4188 4189 void 4190 stmf_task_lu_check_freelist(stmf_i_lu_t *ilu) 4191 { 4192 uint32_t num_to_release, ndx; 4193 stmf_i_scsi_task_t *itask; 4194 stmf_lu_t *lu = ilu->ilu_lu; 4195 4196 ASSERT(ilu->ilu_ntasks_min_free <= ilu->ilu_ntasks_free); 4197 4198 /* free half of the minimal free of the free tasks */ 4199 num_to_release = (ilu->ilu_ntasks_min_free + 1) / 2; 4200 if (!num_to_release) { 4201 return; 4202 } 4203 for (ndx = 0; ndx < num_to_release; ndx++) { 4204 mutex_enter(&ilu->ilu_task_lock); 4205 itask = ilu->ilu_free_tasks; 4206 if (itask == NULL) { 4207 mutex_exit(&ilu->ilu_task_lock); 4208 break; 4209 } 4210 ilu->ilu_free_tasks = itask->itask_lu_free_next; 4211 ilu->ilu_ntasks_free--; 4212 mutex_exit(&ilu->ilu_task_lock); 4213 4214 lu->lu_task_free(itask->itask_task); 4215 mutex_enter(&ilu->ilu_task_lock); 4216 if (itask->itask_lu_next) 4217 itask->itask_lu_next->itask_lu_prev = 4218 itask->itask_lu_prev; 4219 if (itask->itask_lu_prev) 4220 itask->itask_lu_prev->itask_lu_next = 4221 itask->itask_lu_next; 4222 else 4223 ilu->ilu_tasks = itask->itask_lu_next; 4224 4225 ilu->ilu_ntasks--; 4226 mutex_exit(&ilu->ilu_task_lock); 4227 stmf_free(itask->itask_task); 4228 } 4229 } 4230 4231 /* 4232 * Called with stmf_lock held 4233 */ 4234 void 4235 stmf_check_freetask() 4236 { 4237 stmf_i_lu_t *ilu; 4238 clock_t endtime = ddi_get_lbolt() + drv_usectohz(10000); 4239 4240 /* stmf_svc_ilu_draining may get changed after stmf_lock is released */ 4241 while ((ilu = stmf_state.stmf_svc_ilu_draining) != NULL) { 4242 stmf_state.stmf_svc_ilu_draining = ilu->ilu_next; 4243 if (!ilu->ilu_ntasks_min_free) { 4244 ilu->ilu_ntasks_min_free = ilu->ilu_ntasks_free; 4245 continue; 4246 } 4247 ilu->ilu_flags |= ILU_STALL_DEREGISTER; 4248 mutex_exit(&stmf_state.stmf_lock); 4249 stmf_task_lu_check_freelist(ilu); 4250 /* 4251 * we do not care about the accuracy of 4252 * ilu_ntasks_min_free, so we don't lock here 4253 */ 4254 ilu->ilu_ntasks_min_free = ilu->ilu_ntasks_free; 4255 mutex_enter(&stmf_state.stmf_lock); 4256 ilu->ilu_flags &= ~ILU_STALL_DEREGISTER; 4257 cv_broadcast(&stmf_state.stmf_cv); 4258 if (ddi_get_lbolt() >= endtime) 4259 break; 4260 } 4261 } 4262 4263 void 4264 stmf_do_ilu_timeouts(stmf_i_lu_t *ilu) 4265 { 4266 clock_t l = ddi_get_lbolt(); 4267 clock_t ps = drv_usectohz(1000000); 4268 stmf_i_scsi_task_t *itask; 4269 scsi_task_t *task; 4270 uint32_t to; 4271 4272 mutex_enter(&ilu->ilu_task_lock); 4273 for (itask = ilu->ilu_tasks; itask != NULL; 4274 itask = itask->itask_lu_next) { 4275 if (itask->itask_flags & (ITASK_IN_FREE_LIST | 4276 ITASK_BEING_ABORTED)) { 4277 continue; 4278 } 4279 task = itask->itask_task; 4280 if (task->task_timeout == 0) 4281 to = stmf_default_task_timeout; 4282 else 4283 to = task->task_timeout; 4284 if ((itask->itask_start_time + (to * ps)) > l) 4285 continue; 4286 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 4287 STMF_TIMEOUT, NULL); 4288 } 4289 mutex_exit(&ilu->ilu_task_lock); 4290 } 4291 4292 /* 4293 * Called with stmf_lock held 4294 */ 4295 void 4296 stmf_check_ilu_timing() 4297 { 4298 stmf_i_lu_t *ilu; 4299 clock_t endtime = ddi_get_lbolt() + drv_usectohz(10000); 4300 4301 /* stmf_svc_ilu_timing may get changed after stmf_lock is released */ 4302 while ((ilu = stmf_state.stmf_svc_ilu_timing) != NULL) { 4303 stmf_state.stmf_svc_ilu_timing = ilu->ilu_next; 4304 if (ilu->ilu_cur_task_cntr == (&ilu->ilu_task_cntr1)) { 4305 if (ilu->ilu_task_cntr2 == 0) { 4306 ilu->ilu_cur_task_cntr = &ilu->ilu_task_cntr2; 4307 continue; 4308 } 4309 } else { 4310 if (ilu->ilu_task_cntr1 == 0) { 4311 ilu->ilu_cur_task_cntr = &ilu->ilu_task_cntr1; 4312 continue; 4313 } 4314 } 4315 /* 4316 * If we are here then it means that there is some slowdown 4317 * in tasks on this lu. We need to check. 4318 */ 4319 ilu->ilu_flags |= ILU_STALL_DEREGISTER; 4320 mutex_exit(&stmf_state.stmf_lock); 4321 stmf_do_ilu_timeouts(ilu); 4322 mutex_enter(&stmf_state.stmf_lock); 4323 ilu->ilu_flags &= ~ILU_STALL_DEREGISTER; 4324 cv_broadcast(&stmf_state.stmf_cv); 4325 if (ddi_get_lbolt() >= endtime) 4326 break; 4327 } 4328 } 4329 4330 /* 4331 * Kills all tasks on a lu except tm_task 4332 */ 4333 void 4334 stmf_task_lu_killall(stmf_lu_t *lu, scsi_task_t *tm_task, stmf_status_t s) 4335 { 4336 stmf_i_lu_t *ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 4337 stmf_i_scsi_task_t *itask; 4338 4339 mutex_enter(&ilu->ilu_task_lock); 4340 4341 for (itask = ilu->ilu_tasks; itask != NULL; 4342 itask = itask->itask_lu_next) { 4343 if (itask->itask_flags & ITASK_IN_FREE_LIST) 4344 continue; 4345 if (itask->itask_task == tm_task) 4346 continue; 4347 stmf_abort(STMF_QUEUE_TASK_ABORT, itask->itask_task, s, NULL); 4348 } 4349 mutex_exit(&ilu->ilu_task_lock); 4350 } 4351 4352 void 4353 stmf_free_task_bufs(stmf_i_scsi_task_t *itask, stmf_local_port_t *lport) 4354 { 4355 int i; 4356 uint8_t map; 4357 4358 if ((map = itask->itask_allocated_buf_map) == 0) 4359 return; 4360 for (i = 0; i < 4; i++) { 4361 if (map & 1) { 4362 stmf_data_buf_t *dbuf; 4363 4364 dbuf = itask->itask_dbufs[i]; 4365 if (dbuf->db_xfer_start_timestamp) { 4366 stmf_lport_xfer_done(itask, dbuf); 4367 } 4368 if (dbuf->db_flags & DB_LU_DATA_BUF) { 4369 /* 4370 * LU needs to clean up buffer. 4371 * LU is required to free the buffer 4372 * in the xfer_done handler. 4373 */ 4374 scsi_task_t *task = itask->itask_task; 4375 stmf_lu_t *lu = task->task_lu; 4376 4377 lu->lu_dbuf_free(task, dbuf); 4378 ASSERT(((itask->itask_allocated_buf_map>>i) 4379 & 1) == 0); /* must be gone */ 4380 } else { 4381 ASSERT(dbuf->db_lu_private == NULL); 4382 dbuf->db_lu_private = NULL; 4383 lport->lport_ds->ds_free_data_buf( 4384 lport->lport_ds, dbuf); 4385 } 4386 } 4387 map >>= 1; 4388 } 4389 itask->itask_allocated_buf_map = 0; 4390 } 4391 4392 void 4393 stmf_task_free(scsi_task_t *task) 4394 { 4395 stmf_local_port_t *lport = task->task_lport; 4396 stmf_i_scsi_task_t *itask = (stmf_i_scsi_task_t *) 4397 task->task_stmf_private; 4398 stmf_i_scsi_session_t *iss = (stmf_i_scsi_session_t *) 4399 task->task_session->ss_stmf_private; 4400 4401 stmf_task_audit(itask, TE_TASK_FREE, CMD_OR_IOF_NA, NULL); 4402 4403 stmf_free_task_bufs(itask, lport); 4404 stmf_itl_task_done(itask); 4405 DTRACE_PROBE2(stmf__task__end, scsi_task_t *, task, 4406 hrtime_t, 4407 itask->itask_done_timestamp - itask->itask_start_timestamp); 4408 if (itask->itask_itl_datap) { 4409 if (atomic_dec_32_nv(&itask->itask_itl_datap->itl_counter) == 4410 0) { 4411 stmf_release_itl_handle(task->task_lu, 4412 itask->itask_itl_datap); 4413 } 4414 } 4415 4416 rw_enter(iss->iss_lockp, RW_READER); 4417 lport->lport_task_free(task); 4418 if (itask->itask_worker) { 4419 atomic_dec_32(&stmf_cur_ntasks); 4420 atomic_dec_32(&itask->itask_worker->worker_ref_count); 4421 } 4422 /* 4423 * After calling stmf_task_lu_free, the task pointer can no longer 4424 * be trusted. 4425 */ 4426 stmf_task_lu_free(task, iss); 4427 rw_exit(iss->iss_lockp); 4428 } 4429 4430 void 4431 stmf_post_task(scsi_task_t *task, stmf_data_buf_t *dbuf) 4432 { 4433 stmf_i_scsi_task_t *itask = (stmf_i_scsi_task_t *) 4434 task->task_stmf_private; 4435 stmf_i_lu_t *ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 4436 int nv; 4437 uint32_t old, new; 4438 uint32_t ct; 4439 stmf_worker_t *w, *w1; 4440 uint8_t tm; 4441 4442 if (task->task_max_nbufs > 4) 4443 task->task_max_nbufs = 4; 4444 task->task_cur_nbufs = 0; 4445 /* Latest value of currently running tasks */ 4446 ct = atomic_inc_32_nv(&stmf_cur_ntasks); 4447 4448 /* Select the next worker using round robin */ 4449 nv = (int)atomic_inc_32_nv((uint32_t *)&stmf_worker_sel_counter); 4450 if (nv >= stmf_nworkers_accepting_cmds) { 4451 int s = nv; 4452 do { 4453 nv -= stmf_nworkers_accepting_cmds; 4454 } while (nv >= stmf_nworkers_accepting_cmds); 4455 if (nv < 0) 4456 nv = 0; 4457 /* Its ok if this cas fails */ 4458 (void) atomic_cas_32((uint32_t *)&stmf_worker_sel_counter, 4459 s, nv); 4460 } 4461 w = &stmf_workers[nv]; 4462 4463 /* 4464 * A worker can be pinned by interrupt. So select the next one 4465 * if it has lower load. 4466 */ 4467 if ((nv + 1) >= stmf_nworkers_accepting_cmds) { 4468 w1 = stmf_workers; 4469 } else { 4470 w1 = &stmf_workers[nv + 1]; 4471 } 4472 if (w1->worker_queue_depth < w->worker_queue_depth) 4473 w = w1; 4474 4475 mutex_enter(&w->worker_lock); 4476 if (((w->worker_flags & STMF_WORKER_STARTED) == 0) || 4477 (w->worker_flags & STMF_WORKER_TERMINATE)) { 4478 /* 4479 * Maybe we are in the middle of a change. Just go to 4480 * the 1st worker. 4481 */ 4482 mutex_exit(&w->worker_lock); 4483 w = stmf_workers; 4484 mutex_enter(&w->worker_lock); 4485 } 4486 itask->itask_worker = w; 4487 /* 4488 * Track max system load inside the worker as we already have the 4489 * worker lock (no point implementing another lock). The service 4490 * thread will do the comparisons and figure out the max overall 4491 * system load. 4492 */ 4493 if (w->worker_max_sys_qdepth_pu < ct) 4494 w->worker_max_sys_qdepth_pu = ct; 4495 4496 do { 4497 old = new = itask->itask_flags; 4498 new |= ITASK_KNOWN_TO_TGT_PORT | ITASK_IN_WORKER_QUEUE; 4499 if (task->task_mgmt_function) { 4500 tm = task->task_mgmt_function; 4501 if ((tm == TM_TARGET_RESET) || 4502 (tm == TM_TARGET_COLD_RESET) || 4503 (tm == TM_TARGET_WARM_RESET)) { 4504 new |= ITASK_DEFAULT_HANDLING; 4505 } 4506 } else if (task->task_cdb[0] == SCMD_REPORT_LUNS) { 4507 new |= ITASK_DEFAULT_HANDLING; 4508 } 4509 new &= ~ITASK_IN_TRANSITION; 4510 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 4511 4512 stmf_itl_task_start(itask); 4513 4514 itask->itask_worker_next = NULL; 4515 if (w->worker_task_tail) { 4516 w->worker_task_tail->itask_worker_next = itask; 4517 } else { 4518 w->worker_task_head = itask; 4519 } 4520 w->worker_task_tail = itask; 4521 if (++(w->worker_queue_depth) > w->worker_max_qdepth_pu) { 4522 w->worker_max_qdepth_pu = w->worker_queue_depth; 4523 } 4524 /* Measure task waitq time */ 4525 itask->itask_waitq_enter_timestamp = gethrtime(); 4526 atomic_inc_32(&w->worker_ref_count); 4527 itask->itask_cmd_stack[0] = ITASK_CMD_NEW_TASK; 4528 itask->itask_ncmds = 1; 4529 stmf_task_audit(itask, TE_TASK_START, CMD_OR_IOF_NA, dbuf); 4530 if (dbuf) { 4531 itask->itask_allocated_buf_map = 1; 4532 itask->itask_dbufs[0] = dbuf; 4533 dbuf->db_handle = 0; 4534 } else { 4535 itask->itask_allocated_buf_map = 0; 4536 itask->itask_dbufs[0] = NULL; 4537 } 4538 4539 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0) { 4540 w->worker_signal_timestamp = gethrtime(); 4541 DTRACE_PROBE2(worker__signal, stmf_worker_t *, w, 4542 scsi_task_t *, task); 4543 cv_signal(&w->worker_cv); 4544 } 4545 mutex_exit(&w->worker_lock); 4546 4547 /* 4548 * This can only happen if during stmf_task_alloc(), ILU_RESET_ACTIVE 4549 * was set between checking of ILU_RESET_ACTIVE and clearing of the 4550 * ITASK_IN_FREE_LIST flag. Take care of these "sneaked-in" tasks here. 4551 */ 4552 if (ilu->ilu_flags & ILU_RESET_ACTIVE) { 4553 stmf_abort(STMF_QUEUE_TASK_ABORT, task, STMF_ABORTED, NULL); 4554 } 4555 } 4556 4557 static void 4558 stmf_task_audit(stmf_i_scsi_task_t *itask, 4559 task_audit_event_t te, uint32_t cmd_or_iof, stmf_data_buf_t *dbuf) 4560 { 4561 stmf_task_audit_rec_t *ar; 4562 4563 mutex_enter(&itask->itask_audit_mutex); 4564 ar = &itask->itask_audit_records[itask->itask_audit_index++]; 4565 itask->itask_audit_index &= (ITASK_TASK_AUDIT_DEPTH - 1); 4566 ar->ta_event = te; 4567 ar->ta_cmd_or_iof = cmd_or_iof; 4568 ar->ta_itask_flags = itask->itask_flags; 4569 ar->ta_dbuf = dbuf; 4570 gethrestime(&ar->ta_timestamp); 4571 mutex_exit(&itask->itask_audit_mutex); 4572 } 4573 4574 4575 /* 4576 * ++++++++++++++ ABORT LOGIC ++++++++++++++++++++ 4577 * Once ITASK_BEING_ABORTED is set, ITASK_KNOWN_TO_LU can be reset already 4578 * i.e. before ITASK_BEING_ABORTED being set. But if it was not, it cannot 4579 * be reset until the LU explicitly calls stmf_task_lu_aborted(). Of course 4580 * the LU will make this call only if we call the LU's abort entry point. 4581 * we will only call that entry point if ITASK_KNOWN_TO_LU was set. 4582 * 4583 * Same logic applies for the port. 4584 * 4585 * Also ITASK_BEING_ABORTED will not be allowed to set if both KNOWN_TO_LU 4586 * and KNOWN_TO_TGT_PORT are reset. 4587 * 4588 * +++++++++++++++++++++++++++++++++++++++++++++++ 4589 */ 4590 4591 stmf_status_t 4592 stmf_xfer_data(scsi_task_t *task, stmf_data_buf_t *dbuf, uint32_t ioflags) 4593 { 4594 stmf_status_t ret = STMF_SUCCESS; 4595 4596 stmf_i_scsi_task_t *itask = 4597 (stmf_i_scsi_task_t *)task->task_stmf_private; 4598 4599 stmf_task_audit(itask, TE_XFER_START, ioflags, dbuf); 4600 4601 if (ioflags & STMF_IOF_LU_DONE) { 4602 uint32_t new, old; 4603 do { 4604 new = old = itask->itask_flags; 4605 if (new & ITASK_BEING_ABORTED) 4606 return (STMF_ABORTED); 4607 new &= ~ITASK_KNOWN_TO_LU; 4608 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 4609 } 4610 if (itask->itask_flags & ITASK_BEING_ABORTED) 4611 return (STMF_ABORTED); 4612 #ifdef DEBUG 4613 if (!(ioflags & STMF_IOF_STATS_ONLY) && stmf_drop_buf_counter > 0) { 4614 if (atomic_dec_32_nv(&stmf_drop_buf_counter) == 1) 4615 return (STMF_SUCCESS); 4616 } 4617 #endif 4618 4619 stmf_update_kstat_lu_io(task, dbuf); 4620 stmf_update_kstat_lport_io(task, dbuf); 4621 stmf_lport_xfer_start(itask, dbuf); 4622 if (ioflags & STMF_IOF_STATS_ONLY) { 4623 stmf_lport_xfer_done(itask, dbuf); 4624 return (STMF_SUCCESS); 4625 } 4626 4627 dbuf->db_flags |= DB_LPORT_XFER_ACTIVE; 4628 ret = task->task_lport->lport_xfer_data(task, dbuf, ioflags); 4629 4630 /* 4631 * Port provider may have already called the buffer callback in 4632 * which case dbuf->db_xfer_start_timestamp will be 0. 4633 */ 4634 if (ret != STMF_SUCCESS) { 4635 dbuf->db_flags &= ~DB_LPORT_XFER_ACTIVE; 4636 if (dbuf->db_xfer_start_timestamp != 0) 4637 stmf_lport_xfer_done(itask, dbuf); 4638 } 4639 4640 return (ret); 4641 } 4642 4643 void 4644 stmf_data_xfer_done(scsi_task_t *task, stmf_data_buf_t *dbuf, uint32_t iof) 4645 { 4646 stmf_i_scsi_task_t *itask = 4647 (stmf_i_scsi_task_t *)task->task_stmf_private; 4648 stmf_i_local_port_t *ilport; 4649 stmf_worker_t *w = itask->itask_worker; 4650 uint32_t new, old; 4651 uint8_t update_queue_flags, free_it, queue_it; 4652 4653 stmf_lport_xfer_done(itask, dbuf); 4654 4655 stmf_task_audit(itask, TE_XFER_DONE, iof, dbuf); 4656 4657 /* Guard against unexpected completions from the lport */ 4658 if (dbuf->db_flags & DB_LPORT_XFER_ACTIVE) { 4659 dbuf->db_flags &= ~DB_LPORT_XFER_ACTIVE; 4660 } else { 4661 /* 4662 * This should never happen. 4663 */ 4664 ilport = task->task_lport->lport_stmf_private; 4665 ilport->ilport_unexpected_comp++; 4666 cmn_err(CE_PANIC, "Unexpected xfer completion task %p dbuf %p", 4667 (void *)task, (void *)dbuf); 4668 return; 4669 } 4670 4671 mutex_enter(&w->worker_lock); 4672 do { 4673 new = old = itask->itask_flags; 4674 if (old & ITASK_BEING_ABORTED) { 4675 mutex_exit(&w->worker_lock); 4676 return; 4677 } 4678 free_it = 0; 4679 if (iof & STMF_IOF_LPORT_DONE) { 4680 new &= ~ITASK_KNOWN_TO_TGT_PORT; 4681 task->task_completion_status = dbuf->db_xfer_status; 4682 free_it = 1; 4683 } 4684 /* 4685 * If the task is known to LU then queue it. But if 4686 * it is already queued (multiple completions) then 4687 * just update the buffer information by grabbing the 4688 * worker lock. If the task is not known to LU, 4689 * completed/aborted, then see if we need to 4690 * free this task. 4691 */ 4692 if (old & ITASK_KNOWN_TO_LU) { 4693 free_it = 0; 4694 update_queue_flags = 1; 4695 if (old & ITASK_IN_WORKER_QUEUE) { 4696 queue_it = 0; 4697 } else { 4698 queue_it = 1; 4699 new |= ITASK_IN_WORKER_QUEUE; 4700 } 4701 } else { 4702 update_queue_flags = 0; 4703 queue_it = 0; 4704 } 4705 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 4706 4707 if (update_queue_flags) { 4708 uint8_t cmd = (dbuf->db_handle << 5) | ITASK_CMD_DATA_XFER_DONE; 4709 4710 ASSERT(itask->itask_ncmds < ITASK_MAX_NCMDS); 4711 itask->itask_cmd_stack[itask->itask_ncmds++] = cmd; 4712 if (queue_it) { 4713 itask->itask_worker_next = NULL; 4714 if (w->worker_task_tail) { 4715 w->worker_task_tail->itask_worker_next = itask; 4716 } else { 4717 w->worker_task_head = itask; 4718 } 4719 w->worker_task_tail = itask; 4720 /* Measure task waitq time */ 4721 itask->itask_waitq_enter_timestamp = gethrtime(); 4722 if (++(w->worker_queue_depth) > 4723 w->worker_max_qdepth_pu) { 4724 w->worker_max_qdepth_pu = w->worker_queue_depth; 4725 } 4726 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0) 4727 cv_signal(&w->worker_cv); 4728 } 4729 } 4730 mutex_exit(&w->worker_lock); 4731 4732 if (free_it) { 4733 if ((itask->itask_flags & (ITASK_KNOWN_TO_LU | 4734 ITASK_KNOWN_TO_TGT_PORT | ITASK_IN_WORKER_QUEUE | 4735 ITASK_BEING_ABORTED)) == 0) { 4736 stmf_task_free(task); 4737 } 4738 } 4739 } 4740 4741 stmf_status_t 4742 stmf_send_scsi_status(scsi_task_t *task, uint32_t ioflags) 4743 { 4744 DTRACE_PROBE1(scsi__send__status, scsi_task_t *, task); 4745 4746 stmf_i_scsi_task_t *itask = 4747 (stmf_i_scsi_task_t *)task->task_stmf_private; 4748 4749 stmf_task_audit(itask, TE_SEND_STATUS, ioflags, NULL); 4750 4751 if (ioflags & STMF_IOF_LU_DONE) { 4752 uint32_t new, old; 4753 do { 4754 new = old = itask->itask_flags; 4755 if (new & ITASK_BEING_ABORTED) 4756 return (STMF_ABORTED); 4757 new &= ~ITASK_KNOWN_TO_LU; 4758 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 4759 } 4760 4761 if (!(itask->itask_flags & ITASK_KNOWN_TO_TGT_PORT)) { 4762 return (STMF_SUCCESS); 4763 } 4764 4765 if (itask->itask_flags & ITASK_BEING_ABORTED) 4766 return (STMF_ABORTED); 4767 4768 if (task->task_additional_flags & TASK_AF_NO_EXPECTED_XFER_LENGTH) { 4769 task->task_status_ctrl = 0; 4770 task->task_resid = 0; 4771 } else if (task->task_cmd_xfer_length > 4772 task->task_expected_xfer_length) { 4773 task->task_status_ctrl = TASK_SCTRL_OVER; 4774 task->task_resid = task->task_cmd_xfer_length - 4775 task->task_expected_xfer_length; 4776 } else if (task->task_nbytes_transferred < 4777 task->task_expected_xfer_length) { 4778 task->task_status_ctrl = TASK_SCTRL_UNDER; 4779 task->task_resid = task->task_expected_xfer_length - 4780 task->task_nbytes_transferred; 4781 } else { 4782 task->task_status_ctrl = 0; 4783 task->task_resid = 0; 4784 } 4785 return (task->task_lport->lport_send_status(task, ioflags)); 4786 } 4787 4788 void 4789 stmf_send_status_done(scsi_task_t *task, stmf_status_t s, uint32_t iof) 4790 { 4791 stmf_i_scsi_task_t *itask = 4792 (stmf_i_scsi_task_t *)task->task_stmf_private; 4793 stmf_worker_t *w = itask->itask_worker; 4794 uint32_t new, old; 4795 uint8_t free_it, queue_it; 4796 4797 stmf_task_audit(itask, TE_SEND_STATUS_DONE, iof, NULL); 4798 4799 mutex_enter(&w->worker_lock); 4800 do { 4801 new = old = itask->itask_flags; 4802 if (old & ITASK_BEING_ABORTED) { 4803 mutex_exit(&w->worker_lock); 4804 return; 4805 } 4806 free_it = 0; 4807 if (iof & STMF_IOF_LPORT_DONE) { 4808 new &= ~ITASK_KNOWN_TO_TGT_PORT; 4809 free_it = 1; 4810 } 4811 /* 4812 * If the task is known to LU then queue it. But if 4813 * it is already queued (multiple completions) then 4814 * just update the buffer information by grabbing the 4815 * worker lock. If the task is not known to LU, 4816 * completed/aborted, then see if we need to 4817 * free this task. 4818 */ 4819 if (old & ITASK_KNOWN_TO_LU) { 4820 free_it = 0; 4821 queue_it = 1; 4822 if (old & ITASK_IN_WORKER_QUEUE) { 4823 cmn_err(CE_PANIC, "status completion received" 4824 " when task is already in worker queue " 4825 " task = %p", (void *)task); 4826 } 4827 new |= ITASK_IN_WORKER_QUEUE; 4828 } else { 4829 queue_it = 0; 4830 } 4831 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 4832 task->task_completion_status = s; 4833 4834 4835 if (queue_it) { 4836 ASSERT(itask->itask_ncmds < ITASK_MAX_NCMDS); 4837 itask->itask_cmd_stack[itask->itask_ncmds++] = 4838 ITASK_CMD_STATUS_DONE; 4839 itask->itask_worker_next = NULL; 4840 if (w->worker_task_tail) { 4841 w->worker_task_tail->itask_worker_next = itask; 4842 } else { 4843 w->worker_task_head = itask; 4844 } 4845 w->worker_task_tail = itask; 4846 /* Measure task waitq time */ 4847 itask->itask_waitq_enter_timestamp = gethrtime(); 4848 if (++(w->worker_queue_depth) > w->worker_max_qdepth_pu) { 4849 w->worker_max_qdepth_pu = w->worker_queue_depth; 4850 } 4851 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0) 4852 cv_signal(&w->worker_cv); 4853 } 4854 mutex_exit(&w->worker_lock); 4855 4856 if (free_it) { 4857 if ((itask->itask_flags & (ITASK_KNOWN_TO_LU | 4858 ITASK_KNOWN_TO_TGT_PORT | ITASK_IN_WORKER_QUEUE | 4859 ITASK_BEING_ABORTED)) == 0) { 4860 stmf_task_free(task); 4861 } else { 4862 cmn_err(CE_PANIC, "LU is done with the task but LPORT " 4863 " is not done, itask %p itask_flags %x", 4864 (void *)itask, itask->itask_flags); 4865 } 4866 } 4867 } 4868 4869 void 4870 stmf_task_lu_done(scsi_task_t *task) 4871 { 4872 stmf_i_scsi_task_t *itask = 4873 (stmf_i_scsi_task_t *)task->task_stmf_private; 4874 stmf_worker_t *w = itask->itask_worker; 4875 uint32_t new, old; 4876 4877 mutex_enter(&w->worker_lock); 4878 do { 4879 new = old = itask->itask_flags; 4880 if (old & ITASK_BEING_ABORTED) { 4881 mutex_exit(&w->worker_lock); 4882 return; 4883 } 4884 if (old & ITASK_IN_WORKER_QUEUE) { 4885 cmn_err(CE_PANIC, "task_lu_done received" 4886 " when task is in worker queue " 4887 " task = %p", (void *)task); 4888 } 4889 new &= ~ITASK_KNOWN_TO_LU; 4890 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 4891 4892 mutex_exit(&w->worker_lock); 4893 4894 if ((itask->itask_flags & (ITASK_KNOWN_TO_LU | 4895 ITASK_KNOWN_TO_TGT_PORT | ITASK_IN_WORKER_QUEUE | 4896 ITASK_BEING_ABORTED)) == 0) { 4897 stmf_task_free(task); 4898 } else { 4899 cmn_err(CE_PANIC, "stmf_lu_done should be the last stage but " 4900 " the task is still not done, task = %p", (void *)task); 4901 } 4902 } 4903 4904 void 4905 stmf_queue_task_for_abort(scsi_task_t *task, stmf_status_t s) 4906 { 4907 stmf_i_scsi_task_t *itask = 4908 (stmf_i_scsi_task_t *)task->task_stmf_private; 4909 stmf_worker_t *w; 4910 uint32_t old, new; 4911 4912 stmf_task_audit(itask, TE_TASK_ABORT, CMD_OR_IOF_NA, NULL); 4913 4914 do { 4915 old = new = itask->itask_flags; 4916 if ((old & ITASK_BEING_ABORTED) || 4917 ((old & (ITASK_KNOWN_TO_TGT_PORT | 4918 ITASK_KNOWN_TO_LU)) == 0)) { 4919 return; 4920 } 4921 new |= ITASK_BEING_ABORTED; 4922 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 4923 task->task_completion_status = s; 4924 itask->itask_start_time = ddi_get_lbolt(); 4925 4926 if (((w = itask->itask_worker) == NULL) || 4927 (itask->itask_flags & ITASK_IN_TRANSITION)) { 4928 return; 4929 } 4930 4931 /* Queue it and get out */ 4932 mutex_enter(&w->worker_lock); 4933 if (itask->itask_flags & ITASK_IN_WORKER_QUEUE) { 4934 mutex_exit(&w->worker_lock); 4935 return; 4936 } 4937 atomic_or_32(&itask->itask_flags, ITASK_IN_WORKER_QUEUE); 4938 itask->itask_worker_next = NULL; 4939 if (w->worker_task_tail) { 4940 w->worker_task_tail->itask_worker_next = itask; 4941 } else { 4942 w->worker_task_head = itask; 4943 } 4944 w->worker_task_tail = itask; 4945 if (++(w->worker_queue_depth) > w->worker_max_qdepth_pu) { 4946 w->worker_max_qdepth_pu = w->worker_queue_depth; 4947 } 4948 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0) 4949 cv_signal(&w->worker_cv); 4950 mutex_exit(&w->worker_lock); 4951 } 4952 4953 void 4954 stmf_abort(int abort_cmd, scsi_task_t *task, stmf_status_t s, void *arg) 4955 { 4956 stmf_i_scsi_task_t *itask = NULL; 4957 uint32_t old, new, f, rf; 4958 4959 DTRACE_PROBE2(scsi__task__abort, scsi_task_t *, task, 4960 stmf_status_t, s); 4961 4962 switch (abort_cmd) { 4963 case STMF_QUEUE_ABORT_LU: 4964 stmf_task_lu_killall((stmf_lu_t *)arg, task, s); 4965 return; 4966 case STMF_QUEUE_TASK_ABORT: 4967 stmf_queue_task_for_abort(task, s); 4968 return; 4969 case STMF_REQUEUE_TASK_ABORT_LPORT: 4970 rf = ITASK_TGT_PORT_ABORT_CALLED; 4971 f = ITASK_KNOWN_TO_TGT_PORT; 4972 break; 4973 case STMF_REQUEUE_TASK_ABORT_LU: 4974 rf = ITASK_LU_ABORT_CALLED; 4975 f = ITASK_KNOWN_TO_LU; 4976 break; 4977 default: 4978 return; 4979 } 4980 itask = (stmf_i_scsi_task_t *)task->task_stmf_private; 4981 f |= ITASK_BEING_ABORTED | rf; 4982 do { 4983 old = new = itask->itask_flags; 4984 if ((old & f) != f) { 4985 return; 4986 } 4987 new &= ~rf; 4988 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 4989 } 4990 4991 void 4992 stmf_task_lu_aborted(scsi_task_t *task, stmf_status_t s, uint32_t iof) 4993 { 4994 char info[STMF_CHANGE_INFO_LEN]; 4995 stmf_i_scsi_task_t *itask = TASK_TO_ITASK(task); 4996 unsigned long long st; 4997 4998 stmf_task_audit(itask, TE_TASK_LU_ABORTED, iof, NULL); 4999 5000 st = s; /* gcc fix */ 5001 if ((s != STMF_ABORT_SUCCESS) && (s != STMF_NOT_FOUND)) { 5002 (void) snprintf(info, sizeof (info), 5003 "task %p, lu failed to abort ret=%llx", (void *)task, st); 5004 } else if ((iof & STMF_IOF_LU_DONE) == 0) { 5005 (void) snprintf(info, sizeof (info), 5006 "Task aborted but LU is not finished, task =" 5007 "%p, s=%llx, iof=%x", (void *)task, st, iof); 5008 } else { 5009 /* 5010 * LU abort successfully 5011 */ 5012 atomic_and_32(&itask->itask_flags, ~ITASK_KNOWN_TO_LU); 5013 return; 5014 } 5015 5016 stmf_abort_task_offline(task, 1, info); 5017 } 5018 5019 void 5020 stmf_task_lport_aborted(scsi_task_t *task, stmf_status_t s, uint32_t iof) 5021 { 5022 char info[STMF_CHANGE_INFO_LEN]; 5023 stmf_i_scsi_task_t *itask = TASK_TO_ITASK(task); 5024 unsigned long long st; 5025 uint32_t old, new; 5026 5027 stmf_task_audit(itask, TE_TASK_LPORT_ABORTED, iof, NULL); 5028 5029 st = s; 5030 if ((s != STMF_ABORT_SUCCESS) && (s != STMF_NOT_FOUND)) { 5031 (void) snprintf(info, sizeof (info), 5032 "task %p, tgt port failed to abort ret=%llx", (void *)task, 5033 st); 5034 } else if ((iof & STMF_IOF_LPORT_DONE) == 0) { 5035 (void) snprintf(info, sizeof (info), 5036 "Task aborted but tgt port is not finished, " 5037 "task=%p, s=%llx, iof=%x", (void *)task, st, iof); 5038 } else { 5039 /* 5040 * LPORT abort successfully 5041 */ 5042 do { 5043 old = new = itask->itask_flags; 5044 if (!(old & ITASK_KNOWN_TO_TGT_PORT)) 5045 return; 5046 new &= ~ITASK_KNOWN_TO_TGT_PORT; 5047 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 5048 return; 5049 } 5050 5051 stmf_abort_task_offline(task, 0, info); 5052 } 5053 5054 stmf_status_t 5055 stmf_task_poll_lu(scsi_task_t *task, uint32_t timeout) 5056 { 5057 stmf_i_scsi_task_t *itask = (stmf_i_scsi_task_t *) 5058 task->task_stmf_private; 5059 stmf_worker_t *w = itask->itask_worker; 5060 int i; 5061 5062 ASSERT(itask->itask_flags & ITASK_KNOWN_TO_LU); 5063 mutex_enter(&w->worker_lock); 5064 if (itask->itask_ncmds >= ITASK_MAX_NCMDS) { 5065 mutex_exit(&w->worker_lock); 5066 return (STMF_BUSY); 5067 } 5068 for (i = 0; i < itask->itask_ncmds; i++) { 5069 if (itask->itask_cmd_stack[i] == ITASK_CMD_POLL_LU) { 5070 mutex_exit(&w->worker_lock); 5071 return (STMF_SUCCESS); 5072 } 5073 } 5074 itask->itask_cmd_stack[itask->itask_ncmds++] = ITASK_CMD_POLL_LU; 5075 if (timeout == ITASK_DEFAULT_POLL_TIMEOUT) { 5076 itask->itask_poll_timeout = ddi_get_lbolt() + 1; 5077 } else { 5078 clock_t t = drv_usectohz(timeout * 1000); 5079 if (t == 0) 5080 t = 1; 5081 itask->itask_poll_timeout = ddi_get_lbolt() + t; 5082 } 5083 if ((itask->itask_flags & ITASK_IN_WORKER_QUEUE) == 0) { 5084 itask->itask_worker_next = NULL; 5085 if (w->worker_task_tail) { 5086 w->worker_task_tail->itask_worker_next = itask; 5087 } else { 5088 w->worker_task_head = itask; 5089 } 5090 w->worker_task_tail = itask; 5091 if (++(w->worker_queue_depth) > w->worker_max_qdepth_pu) { 5092 w->worker_max_qdepth_pu = w->worker_queue_depth; 5093 } 5094 atomic_or_32(&itask->itask_flags, ITASK_IN_WORKER_QUEUE); 5095 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0) 5096 cv_signal(&w->worker_cv); 5097 } 5098 mutex_exit(&w->worker_lock); 5099 return (STMF_SUCCESS); 5100 } 5101 5102 stmf_status_t 5103 stmf_task_poll_lport(scsi_task_t *task, uint32_t timeout) 5104 { 5105 stmf_i_scsi_task_t *itask = (stmf_i_scsi_task_t *) 5106 task->task_stmf_private; 5107 stmf_worker_t *w = itask->itask_worker; 5108 int i; 5109 5110 ASSERT(itask->itask_flags & ITASK_KNOWN_TO_TGT_PORT); 5111 mutex_enter(&w->worker_lock); 5112 if (itask->itask_ncmds >= ITASK_MAX_NCMDS) { 5113 mutex_exit(&w->worker_lock); 5114 return (STMF_BUSY); 5115 } 5116 for (i = 0; i < itask->itask_ncmds; i++) { 5117 if (itask->itask_cmd_stack[i] == ITASK_CMD_POLL_LPORT) { 5118 mutex_exit(&w->worker_lock); 5119 return (STMF_SUCCESS); 5120 } 5121 } 5122 itask->itask_cmd_stack[itask->itask_ncmds++] = ITASK_CMD_POLL_LPORT; 5123 if (timeout == ITASK_DEFAULT_POLL_TIMEOUT) { 5124 itask->itask_poll_timeout = ddi_get_lbolt() + 1; 5125 } else { 5126 clock_t t = drv_usectohz(timeout * 1000); 5127 if (t == 0) 5128 t = 1; 5129 itask->itask_poll_timeout = ddi_get_lbolt() + t; 5130 } 5131 if ((itask->itask_flags & ITASK_IN_WORKER_QUEUE) == 0) { 5132 itask->itask_worker_next = NULL; 5133 if (w->worker_task_tail) { 5134 w->worker_task_tail->itask_worker_next = itask; 5135 } else { 5136 w->worker_task_head = itask; 5137 } 5138 w->worker_task_tail = itask; 5139 if (++(w->worker_queue_depth) > w->worker_max_qdepth_pu) { 5140 w->worker_max_qdepth_pu = w->worker_queue_depth; 5141 } 5142 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0) 5143 cv_signal(&w->worker_cv); 5144 } 5145 mutex_exit(&w->worker_lock); 5146 return (STMF_SUCCESS); 5147 } 5148 5149 void 5150 stmf_do_task_abort(scsi_task_t *task) 5151 { 5152 stmf_i_scsi_task_t *itask = TASK_TO_ITASK(task); 5153 stmf_lu_t *lu; 5154 stmf_local_port_t *lport; 5155 unsigned long long ret; 5156 uint32_t old, new; 5157 uint8_t call_lu_abort, call_port_abort; 5158 char info[STMF_CHANGE_INFO_LEN]; 5159 5160 lu = task->task_lu; 5161 lport = task->task_lport; 5162 do { 5163 old = new = itask->itask_flags; 5164 if ((old & (ITASK_KNOWN_TO_LU | ITASK_LU_ABORT_CALLED)) == 5165 ITASK_KNOWN_TO_LU) { 5166 new |= ITASK_LU_ABORT_CALLED; 5167 call_lu_abort = 1; 5168 } else { 5169 call_lu_abort = 0; 5170 } 5171 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 5172 5173 if (call_lu_abort) { 5174 if ((itask->itask_flags & ITASK_DEFAULT_HANDLING) == 0) { 5175 ret = lu->lu_abort(lu, STMF_LU_ABORT_TASK, task, 0); 5176 } else { 5177 ret = dlun0->lu_abort(lu, STMF_LU_ABORT_TASK, task, 0); 5178 } 5179 if ((ret == STMF_ABORT_SUCCESS) || (ret == STMF_NOT_FOUND)) { 5180 stmf_task_lu_aborted(task, ret, STMF_IOF_LU_DONE); 5181 } else if (ret == STMF_BUSY) { 5182 atomic_and_32(&itask->itask_flags, 5183 ~ITASK_LU_ABORT_CALLED); 5184 } else if (ret != STMF_SUCCESS) { 5185 (void) snprintf(info, sizeof (info), 5186 "Abort failed by LU %p, ret %llx", (void *)lu, ret); 5187 stmf_abort_task_offline(task, 1, info); 5188 } 5189 } else if (itask->itask_flags & ITASK_KNOWN_TO_LU) { 5190 if (ddi_get_lbolt() > (itask->itask_start_time + 5191 STMF_SEC2TICK(lu->lu_abort_timeout? 5192 lu->lu_abort_timeout : ITASK_DEFAULT_ABORT_TIMEOUT))) { 5193 (void) snprintf(info, sizeof (info), 5194 "lu abort timed out"); 5195 stmf_abort_task_offline(itask->itask_task, 1, info); 5196 } 5197 } 5198 5199 do { 5200 old = new = itask->itask_flags; 5201 if ((old & (ITASK_KNOWN_TO_TGT_PORT | 5202 ITASK_TGT_PORT_ABORT_CALLED)) == ITASK_KNOWN_TO_TGT_PORT) { 5203 new |= ITASK_TGT_PORT_ABORT_CALLED; 5204 call_port_abort = 1; 5205 } else { 5206 call_port_abort = 0; 5207 } 5208 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 5209 if (call_port_abort) { 5210 ret = lport->lport_abort(lport, STMF_LPORT_ABORT_TASK, task, 0); 5211 if ((ret == STMF_ABORT_SUCCESS) || (ret == STMF_NOT_FOUND)) { 5212 stmf_task_lport_aborted(task, ret, STMF_IOF_LPORT_DONE); 5213 } else if (ret == STMF_BUSY) { 5214 atomic_and_32(&itask->itask_flags, 5215 ~ITASK_TGT_PORT_ABORT_CALLED); 5216 } else if (ret != STMF_SUCCESS) { 5217 (void) snprintf(info, sizeof (info), 5218 "Abort failed by tgt port %p ret %llx", 5219 (void *)lport, ret); 5220 stmf_abort_task_offline(task, 0, info); 5221 } 5222 } else if (itask->itask_flags & ITASK_KNOWN_TO_TGT_PORT) { 5223 if (ddi_get_lbolt() > (itask->itask_start_time + 5224 STMF_SEC2TICK(lport->lport_abort_timeout? 5225 lport->lport_abort_timeout : 5226 ITASK_DEFAULT_ABORT_TIMEOUT))) { 5227 (void) snprintf(info, sizeof (info), 5228 "lport abort timed out"); 5229 stmf_abort_task_offline(itask->itask_task, 0, info); 5230 } 5231 } 5232 } 5233 5234 stmf_status_t 5235 stmf_ctl(int cmd, void *obj, void *arg) 5236 { 5237 stmf_status_t ret; 5238 stmf_i_lu_t *ilu; 5239 stmf_i_local_port_t *ilport; 5240 stmf_state_change_info_t *ssci = (stmf_state_change_info_t *)arg; 5241 5242 mutex_enter(&stmf_state.stmf_lock); 5243 ret = STMF_INVALID_ARG; 5244 if (cmd & STMF_CMD_LU_OP) { 5245 ilu = stmf_lookup_lu((stmf_lu_t *)obj); 5246 if (ilu == NULL) { 5247 goto stmf_ctl_lock_exit; 5248 } 5249 DTRACE_PROBE3(lu__state__change, 5250 stmf_lu_t *, ilu->ilu_lu, 5251 int, cmd, stmf_state_change_info_t *, ssci); 5252 } else if (cmd & STMF_CMD_LPORT_OP) { 5253 ilport = stmf_lookup_lport((stmf_local_port_t *)obj); 5254 if (ilport == NULL) { 5255 goto stmf_ctl_lock_exit; 5256 } 5257 DTRACE_PROBE3(lport__state__change, 5258 stmf_local_port_t *, ilport->ilport_lport, 5259 int, cmd, stmf_state_change_info_t *, ssci); 5260 } else { 5261 goto stmf_ctl_lock_exit; 5262 } 5263 5264 switch (cmd) { 5265 case STMF_CMD_LU_ONLINE: 5266 switch (ilu->ilu_state) { 5267 case STMF_STATE_OFFLINE: 5268 ret = STMF_SUCCESS; 5269 break; 5270 case STMF_STATE_ONLINE: 5271 case STMF_STATE_ONLINING: 5272 ret = STMF_ALREADY; 5273 break; 5274 case STMF_STATE_OFFLINING: 5275 ret = STMF_BUSY; 5276 break; 5277 default: 5278 ret = STMF_BADSTATE; 5279 break; 5280 } 5281 if (ret != STMF_SUCCESS) 5282 goto stmf_ctl_lock_exit; 5283 5284 ilu->ilu_state = STMF_STATE_ONLINING; 5285 mutex_exit(&stmf_state.stmf_lock); 5286 stmf_svc_queue(cmd, obj, (stmf_state_change_info_t *)arg); 5287 break; 5288 5289 case STMF_CMD_LU_ONLINE_COMPLETE: 5290 if (ilu->ilu_state != STMF_STATE_ONLINING) { 5291 ret = STMF_BADSTATE; 5292 goto stmf_ctl_lock_exit; 5293 } 5294 if (((stmf_change_status_t *)arg)->st_completion_status == 5295 STMF_SUCCESS) { 5296 ilu->ilu_state = STMF_STATE_ONLINE; 5297 mutex_exit(&stmf_state.stmf_lock); 5298 ((stmf_lu_t *)obj)->lu_ctl((stmf_lu_t *)obj, 5299 STMF_ACK_LU_ONLINE_COMPLETE, arg); 5300 mutex_enter(&stmf_state.stmf_lock); 5301 stmf_add_lu_to_active_sessions((stmf_lu_t *)obj); 5302 } else { 5303 /* XXX: should throw a meesage an record more data */ 5304 ilu->ilu_state = STMF_STATE_OFFLINE; 5305 } 5306 ret = STMF_SUCCESS; 5307 goto stmf_ctl_lock_exit; 5308 5309 case STMF_CMD_LU_OFFLINE: 5310 switch (ilu->ilu_state) { 5311 case STMF_STATE_ONLINE: 5312 ret = STMF_SUCCESS; 5313 break; 5314 case STMF_STATE_OFFLINE: 5315 case STMF_STATE_OFFLINING: 5316 ret = STMF_ALREADY; 5317 break; 5318 case STMF_STATE_ONLINING: 5319 ret = STMF_BUSY; 5320 break; 5321 default: 5322 ret = STMF_BADSTATE; 5323 break; 5324 } 5325 if (ret != STMF_SUCCESS) 5326 goto stmf_ctl_lock_exit; 5327 ilu->ilu_state = STMF_STATE_OFFLINING; 5328 mutex_exit(&stmf_state.stmf_lock); 5329 stmf_svc_queue(cmd, obj, (stmf_state_change_info_t *)arg); 5330 break; 5331 5332 case STMF_CMD_LU_OFFLINE_COMPLETE: 5333 if (ilu->ilu_state != STMF_STATE_OFFLINING) { 5334 ret = STMF_BADSTATE; 5335 goto stmf_ctl_lock_exit; 5336 } 5337 if (((stmf_change_status_t *)arg)->st_completion_status == 5338 STMF_SUCCESS) { 5339 ilu->ilu_state = STMF_STATE_OFFLINE; 5340 mutex_exit(&stmf_state.stmf_lock); 5341 ((stmf_lu_t *)obj)->lu_ctl((stmf_lu_t *)obj, 5342 STMF_ACK_LU_OFFLINE_COMPLETE, arg); 5343 mutex_enter(&stmf_state.stmf_lock); 5344 } else { 5345 ilu->ilu_state = STMF_STATE_ONLINE; 5346 stmf_add_lu_to_active_sessions((stmf_lu_t *)obj); 5347 } 5348 mutex_exit(&stmf_state.stmf_lock); 5349 break; 5350 5351 /* 5352 * LPORT_ONLINE/OFFLINE has nothing to do with link offline/online. 5353 * It's related with hardware disable/enable. 5354 */ 5355 case STMF_CMD_LPORT_ONLINE: 5356 switch (ilport->ilport_state) { 5357 case STMF_STATE_OFFLINE: 5358 ret = STMF_SUCCESS; 5359 break; 5360 case STMF_STATE_ONLINE: 5361 case STMF_STATE_ONLINING: 5362 ret = STMF_ALREADY; 5363 break; 5364 case STMF_STATE_OFFLINING: 5365 ret = STMF_BUSY; 5366 break; 5367 default: 5368 ret = STMF_BADSTATE; 5369 break; 5370 } 5371 if (ret != STMF_SUCCESS) 5372 goto stmf_ctl_lock_exit; 5373 5374 /* 5375 * Only user request can recover the port from the 5376 * FORCED_OFFLINE state 5377 */ 5378 if (ilport->ilport_flags & ILPORT_FORCED_OFFLINE) { 5379 if (!(ssci->st_rflags & STMF_RFLAG_USER_REQUEST)) { 5380 ret = STMF_FAILURE; 5381 goto stmf_ctl_lock_exit; 5382 } 5383 } 5384 5385 /* 5386 * Avoid too frequent request to online 5387 */ 5388 if (ssci->st_rflags & STMF_RFLAG_USER_REQUEST) { 5389 ilport->ilport_online_times = 0; 5390 ilport->ilport_avg_interval = 0; 5391 } 5392 if ((ilport->ilport_avg_interval < STMF_AVG_ONLINE_INTERVAL) && 5393 (ilport->ilport_online_times >= 4)) { 5394 ret = STMF_FAILURE; 5395 ilport->ilport_flags |= ILPORT_FORCED_OFFLINE; 5396 stmf_trace(NULL, "stmf_ctl: too frequent request to " 5397 "online the port"); 5398 cmn_err(CE_WARN, "stmf_ctl: too frequent request to " 5399 "online the port, set FORCED_OFFLINE now"); 5400 goto stmf_ctl_lock_exit; 5401 } 5402 if (ilport->ilport_online_times > 0) { 5403 if (ilport->ilport_online_times == 1) { 5404 ilport->ilport_avg_interval = ddi_get_lbolt() - 5405 ilport->ilport_last_online_clock; 5406 } else { 5407 ilport->ilport_avg_interval = 5408 (ilport->ilport_avg_interval + 5409 ddi_get_lbolt() - 5410 ilport->ilport_last_online_clock) >> 1; 5411 } 5412 } 5413 ilport->ilport_last_online_clock = ddi_get_lbolt(); 5414 ilport->ilport_online_times++; 5415 5416 /* 5417 * Submit online service request 5418 */ 5419 ilport->ilport_flags &= ~ILPORT_FORCED_OFFLINE; 5420 ilport->ilport_state = STMF_STATE_ONLINING; 5421 mutex_exit(&stmf_state.stmf_lock); 5422 stmf_svc_queue(cmd, obj, (stmf_state_change_info_t *)arg); 5423 break; 5424 5425 case STMF_CMD_LPORT_ONLINE_COMPLETE: 5426 if (ilport->ilport_state != STMF_STATE_ONLINING) { 5427 ret = STMF_BADSTATE; 5428 goto stmf_ctl_lock_exit; 5429 } 5430 if (((stmf_change_status_t *)arg)->st_completion_status == 5431 STMF_SUCCESS) { 5432 ilport->ilport_state = STMF_STATE_ONLINE; 5433 mutex_exit(&stmf_state.stmf_lock); 5434 ((stmf_local_port_t *)obj)->lport_ctl( 5435 (stmf_local_port_t *)obj, 5436 STMF_ACK_LPORT_ONLINE_COMPLETE, arg); 5437 mutex_enter(&stmf_state.stmf_lock); 5438 } else { 5439 ilport->ilport_state = STMF_STATE_OFFLINE; 5440 } 5441 ret = STMF_SUCCESS; 5442 goto stmf_ctl_lock_exit; 5443 5444 case STMF_CMD_LPORT_OFFLINE: 5445 switch (ilport->ilport_state) { 5446 case STMF_STATE_ONLINE: 5447 ret = STMF_SUCCESS; 5448 break; 5449 case STMF_STATE_OFFLINE: 5450 case STMF_STATE_OFFLINING: 5451 ret = STMF_ALREADY; 5452 break; 5453 case STMF_STATE_ONLINING: 5454 ret = STMF_BUSY; 5455 break; 5456 default: 5457 ret = STMF_BADSTATE; 5458 break; 5459 } 5460 if (ret != STMF_SUCCESS) 5461 goto stmf_ctl_lock_exit; 5462 5463 ilport->ilport_state = STMF_STATE_OFFLINING; 5464 mutex_exit(&stmf_state.stmf_lock); 5465 stmf_svc_queue(cmd, obj, (stmf_state_change_info_t *)arg); 5466 break; 5467 5468 case STMF_CMD_LPORT_OFFLINE_COMPLETE: 5469 if (ilport->ilport_state != STMF_STATE_OFFLINING) { 5470 ret = STMF_BADSTATE; 5471 goto stmf_ctl_lock_exit; 5472 } 5473 if (((stmf_change_status_t *)arg)->st_completion_status == 5474 STMF_SUCCESS) { 5475 ilport->ilport_state = STMF_STATE_OFFLINE; 5476 mutex_exit(&stmf_state.stmf_lock); 5477 ((stmf_local_port_t *)obj)->lport_ctl( 5478 (stmf_local_port_t *)obj, 5479 STMF_ACK_LPORT_OFFLINE_COMPLETE, arg); 5480 mutex_enter(&stmf_state.stmf_lock); 5481 } else { 5482 ilport->ilport_state = STMF_STATE_ONLINE; 5483 } 5484 mutex_exit(&stmf_state.stmf_lock); 5485 break; 5486 5487 default: 5488 cmn_err(CE_WARN, "Invalid ctl cmd received %x", cmd); 5489 ret = STMF_INVALID_ARG; 5490 goto stmf_ctl_lock_exit; 5491 } 5492 5493 return (STMF_SUCCESS); 5494 5495 stmf_ctl_lock_exit:; 5496 mutex_exit(&stmf_state.stmf_lock); 5497 return (ret); 5498 } 5499 5500 /* ARGSUSED */ 5501 stmf_status_t 5502 stmf_info_impl(uint32_t cmd, void *arg1, void *arg2, uint8_t *buf, 5503 uint32_t *bufsizep) 5504 { 5505 return (STMF_NOT_SUPPORTED); 5506 } 5507 5508 /* ARGSUSED */ 5509 stmf_status_t 5510 stmf_info(uint32_t cmd, void *arg1, void *arg2, uint8_t *buf, 5511 uint32_t *bufsizep) 5512 { 5513 uint32_t cl = SI_GET_CLASS(cmd); 5514 5515 if (cl == SI_STMF) { 5516 return (stmf_info_impl(cmd, arg1, arg2, buf, bufsizep)); 5517 } 5518 if (cl == SI_LPORT) { 5519 return (((stmf_local_port_t *)arg1)->lport_info(cmd, arg1, 5520 arg2, buf, bufsizep)); 5521 } else if (cl == SI_LU) { 5522 return (((stmf_lu_t *)arg1)->lu_info(cmd, arg1, arg2, buf, 5523 bufsizep)); 5524 } 5525 5526 return (STMF_NOT_SUPPORTED); 5527 } 5528 5529 /* 5530 * Used by port providers. pwwn is 8 byte wwn, sdid is the devid used by 5531 * stmf to register local ports. The ident should have 20 bytes in buffer 5532 * space to convert the wwn to "wwn.xxxxxxxxxxxxxxxx" string. 5533 */ 5534 void 5535 stmf_wwn_to_devid_desc(scsi_devid_desc_t *sdid, uint8_t *wwn, 5536 uint8_t protocol_id) 5537 { 5538 char wwn_str[20+1]; 5539 5540 sdid->protocol_id = protocol_id; 5541 sdid->piv = 1; 5542 sdid->code_set = CODE_SET_ASCII; 5543 sdid->association = ID_IS_TARGET_PORT; 5544 sdid->ident_length = 20; 5545 /* Convert wwn value to "wwn.XXXXXXXXXXXXXXXX" format */ 5546 (void) snprintf(wwn_str, sizeof (wwn_str), 5547 "wwn.%02X%02X%02X%02X%02X%02X%02X%02X", 5548 wwn[0], wwn[1], wwn[2], wwn[3], wwn[4], wwn[5], wwn[6], wwn[7]); 5549 bcopy(wwn_str, (char *)sdid->ident, 20); 5550 } 5551 5552 5553 stmf_xfer_data_t * 5554 stmf_prepare_tpgs_data(uint8_t ilu_alua) 5555 { 5556 stmf_xfer_data_t *xd; 5557 stmf_i_local_port_t *ilport; 5558 uint8_t *p; 5559 uint32_t sz, asz, nports = 0, nports_standby = 0; 5560 5561 mutex_enter(&stmf_state.stmf_lock); 5562 /* check if any ports are standby and create second group */ 5563 for (ilport = stmf_state.stmf_ilportlist; ilport; 5564 ilport = ilport->ilport_next) { 5565 if (ilport->ilport_standby == 1) { 5566 nports_standby++; 5567 } else { 5568 nports++; 5569 } 5570 } 5571 5572 /* The spec only allows for 255 ports to be reported per group */ 5573 nports = min(nports, 255); 5574 nports_standby = min(nports_standby, 255); 5575 sz = (nports * 4) + 12; 5576 if (nports_standby && ilu_alua) { 5577 sz += (nports_standby * 4) + 8; 5578 } 5579 asz = sz + sizeof (*xd) - 4; 5580 xd = (stmf_xfer_data_t *)kmem_zalloc(asz, KM_NOSLEEP); 5581 if (xd == NULL) { 5582 mutex_exit(&stmf_state.stmf_lock); 5583 return (NULL); 5584 } 5585 xd->alloc_size = asz; 5586 xd->size_left = sz; 5587 5588 p = xd->buf; 5589 5590 *((uint32_t *)p) = BE_32(sz - 4); 5591 p += 4; 5592 p[0] = 0x80; /* PREF */ 5593 p[1] = 5; /* AO_SUP, S_SUP */ 5594 if (stmf_state.stmf_alua_node == 1) { 5595 p[3] = 1; /* Group 1 */ 5596 } else { 5597 p[3] = 0; /* Group 0 */ 5598 } 5599 p[7] = nports & 0xff; 5600 p += 8; 5601 for (ilport = stmf_state.stmf_ilportlist; ilport; 5602 ilport = ilport->ilport_next) { 5603 if (ilport->ilport_standby == 1) { 5604 continue; 5605 } 5606 ((uint16_t *)p)[1] = BE_16(ilport->ilport_rtpid); 5607 p += 4; 5608 } 5609 if (nports_standby && ilu_alua) { 5610 p[0] = 0x02; /* Non PREF, Standby */ 5611 p[1] = 5; /* AO_SUP, S_SUP */ 5612 if (stmf_state.stmf_alua_node == 1) { 5613 p[3] = 0; /* Group 0 */ 5614 } else { 5615 p[3] = 1; /* Group 1 */ 5616 } 5617 p[7] = nports_standby & 0xff; 5618 p += 8; 5619 for (ilport = stmf_state.stmf_ilportlist; ilport; 5620 ilport = ilport->ilport_next) { 5621 if (ilport->ilport_standby == 0) { 5622 continue; 5623 } 5624 ((uint16_t *)p)[1] = BE_16(ilport->ilport_rtpid); 5625 p += 4; 5626 } 5627 } 5628 5629 mutex_exit(&stmf_state.stmf_lock); 5630 5631 return (xd); 5632 } 5633 5634 struct scsi_devid_desc * 5635 stmf_scsilib_get_devid_desc(uint16_t rtpid) 5636 { 5637 scsi_devid_desc_t *devid = NULL; 5638 stmf_i_local_port_t *ilport; 5639 5640 mutex_enter(&stmf_state.stmf_lock); 5641 5642 for (ilport = stmf_state.stmf_ilportlist; ilport; 5643 ilport = ilport->ilport_next) { 5644 if (ilport->ilport_rtpid == rtpid) { 5645 scsi_devid_desc_t *id = ilport->ilport_lport->lport_id; 5646 uint32_t id_sz = sizeof (scsi_devid_desc_t) + 5647 id->ident_length; 5648 devid = (scsi_devid_desc_t *)kmem_zalloc(id_sz, 5649 KM_NOSLEEP); 5650 if (devid != NULL) { 5651 bcopy(id, devid, id_sz); 5652 } 5653 break; 5654 } 5655 } 5656 5657 mutex_exit(&stmf_state.stmf_lock); 5658 return (devid); 5659 } 5660 5661 uint16_t 5662 stmf_scsilib_get_lport_rtid(struct scsi_devid_desc *devid) 5663 { 5664 stmf_i_local_port_t *ilport; 5665 scsi_devid_desc_t *id; 5666 uint16_t rtpid = 0; 5667 5668 mutex_enter(&stmf_state.stmf_lock); 5669 for (ilport = stmf_state.stmf_ilportlist; ilport; 5670 ilport = ilport->ilport_next) { 5671 id = ilport->ilport_lport->lport_id; 5672 if ((devid->ident_length == id->ident_length) && 5673 (memcmp(devid->ident, id->ident, id->ident_length) == 0)) { 5674 rtpid = ilport->ilport_rtpid; 5675 break; 5676 } 5677 } 5678 mutex_exit(&stmf_state.stmf_lock); 5679 return (rtpid); 5680 } 5681 5682 static uint16_t stmf_lu_id_gen_number = 0; 5683 5684 stmf_status_t 5685 stmf_scsilib_uniq_lu_id(uint32_t company_id, scsi_devid_desc_t *lu_id) 5686 { 5687 return (stmf_scsilib_uniq_lu_id2(company_id, 0, lu_id)); 5688 } 5689 5690 stmf_status_t 5691 stmf_scsilib_uniq_lu_id2(uint32_t company_id, uint32_t host_id, 5692 scsi_devid_desc_t *lu_id) 5693 { 5694 uint8_t *p; 5695 struct timeval32 timestamp32; 5696 uint32_t *t = (uint32_t *)×tamp32; 5697 struct ether_addr mac; 5698 uint8_t *e = (uint8_t *)&mac; 5699 int hid = (int)host_id; 5700 uint16_t gen_number; 5701 5702 if (company_id == COMPANY_ID_NONE) 5703 company_id = COMPANY_ID_SUN; 5704 5705 if (lu_id->ident_length != 0x10) 5706 return (STMF_INVALID_ARG); 5707 5708 p = (uint8_t *)lu_id; 5709 5710 gen_number = atomic_inc_16_nv(&stmf_lu_id_gen_number); 5711 5712 p[0] = 0xf1; p[1] = 3; p[2] = 0; p[3] = 0x10; 5713 p[4] = ((company_id >> 20) & 0xf) | 0x60; 5714 p[5] = (company_id >> 12) & 0xff; 5715 p[6] = (company_id >> 4) & 0xff; 5716 p[7] = (company_id << 4) & 0xf0; 5717 if (hid == 0 && !localetheraddr((struct ether_addr *)NULL, &mac)) { 5718 hid = BE_32((int)zone_get_hostid(NULL)); 5719 } 5720 if (hid != 0) { 5721 e[0] = (hid >> 24) & 0xff; 5722 e[1] = (hid >> 16) & 0xff; 5723 e[2] = (hid >> 8) & 0xff; 5724 e[3] = hid & 0xff; 5725 e[4] = e[5] = 0; 5726 } 5727 bcopy(e, p+8, 6); 5728 uniqtime32(×tamp32); 5729 *t = BE_32(*t); 5730 bcopy(t, p+14, 4); 5731 p[18] = (gen_number >> 8) & 0xff; 5732 p[19] = gen_number & 0xff; 5733 5734 return (STMF_SUCCESS); 5735 } 5736 5737 /* 5738 * saa is sense key, ASC, ASCQ 5739 */ 5740 void 5741 stmf_scsilib_send_status(scsi_task_t *task, uint8_t st, uint32_t saa) 5742 { 5743 uint8_t sd[18]; 5744 task->task_scsi_status = st; 5745 if (st == 2) { 5746 bzero(sd, 18); 5747 sd[0] = 0x70; 5748 sd[2] = (saa >> 16) & 0xf; 5749 sd[7] = 10; 5750 sd[12] = (saa >> 8) & 0xff; 5751 sd[13] = saa & 0xff; 5752 task->task_sense_data = sd; 5753 task->task_sense_length = 18; 5754 } else { 5755 task->task_sense_data = NULL; 5756 task->task_sense_length = 0; 5757 } 5758 (void) stmf_send_scsi_status(task, STMF_IOF_LU_DONE); 5759 } 5760 5761 uint32_t 5762 stmf_scsilib_prepare_vpd_page83(scsi_task_t *task, uint8_t *page, 5763 uint32_t page_len, uint8_t byte0, uint32_t vpd_mask) 5764 { 5765 uint8_t *p = NULL; 5766 uint8_t small_buf[32]; 5767 uint32_t sz = 0; 5768 uint32_t n = 4; 5769 uint32_t m = 0; 5770 uint32_t last_bit = 0; 5771 5772 if (page_len < 4) 5773 return (0); 5774 if (page_len > 65535) 5775 page_len = 65535; 5776 5777 page[0] = byte0; 5778 page[1] = 0x83; 5779 5780 /* CONSTCOND */ 5781 while (1) { 5782 m += sz; 5783 if (sz && (page_len > n)) { 5784 uint32_t copysz; 5785 copysz = page_len > (n + sz) ? sz : page_len - n; 5786 bcopy(p, page + n, copysz); 5787 n += copysz; 5788 } 5789 vpd_mask &= ~last_bit; 5790 if (vpd_mask == 0) 5791 break; 5792 5793 if (vpd_mask & STMF_VPD_LU_ID) { 5794 last_bit = STMF_VPD_LU_ID; 5795 sz = task->task_lu->lu_id->ident_length + 4; 5796 p = (uint8_t *)task->task_lu->lu_id; 5797 continue; 5798 } else if (vpd_mask & STMF_VPD_TARGET_ID) { 5799 last_bit = STMF_VPD_TARGET_ID; 5800 sz = task->task_lport->lport_id->ident_length + 4; 5801 p = (uint8_t *)task->task_lport->lport_id; 5802 continue; 5803 } else if (vpd_mask & STMF_VPD_TP_GROUP) { 5804 stmf_i_local_port_t *ilport; 5805 last_bit = STMF_VPD_TP_GROUP; 5806 p = small_buf; 5807 bzero(p, 8); 5808 p[0] = 1; 5809 p[1] = 0x15; 5810 p[3] = 4; 5811 ilport = (stmf_i_local_port_t *) 5812 task->task_lport->lport_stmf_private; 5813 /* 5814 * If we're in alua mode, group 1 contains all alua 5815 * participating ports and all standby ports 5816 * > 255. Otherwise, if we're in alua mode, any local 5817 * ports (non standby/pppt) are also in group 1 if the 5818 * alua node is 1. Otherwise the group is 0. 5819 */ 5820 if ((stmf_state.stmf_alua_state && 5821 (ilport->ilport_alua || ilport->ilport_standby) && 5822 ilport->ilport_rtpid > 255) || 5823 (stmf_state.stmf_alua_node == 1 && 5824 ilport->ilport_standby != 1)) { 5825 p[7] = 1; /* Group 1 */ 5826 } 5827 sz = 8; 5828 continue; 5829 } else if (vpd_mask & STMF_VPD_RELATIVE_TP_ID) { 5830 stmf_i_local_port_t *ilport; 5831 5832 last_bit = STMF_VPD_RELATIVE_TP_ID; 5833 p = small_buf; 5834 bzero(p, 8); 5835 p[0] = 1; 5836 p[1] = 0x14; 5837 p[3] = 4; 5838 ilport = (stmf_i_local_port_t *) 5839 task->task_lport->lport_stmf_private; 5840 p[6] = (ilport->ilport_rtpid >> 8) & 0xff; 5841 p[7] = ilport->ilport_rtpid & 0xff; 5842 sz = 8; 5843 continue; 5844 } else { 5845 cmn_err(CE_WARN, "Invalid vpd_mask"); 5846 break; 5847 } 5848 } 5849 5850 page[2] = (m >> 8) & 0xff; 5851 page[3] = m & 0xff; 5852 5853 return (n); 5854 } 5855 5856 void 5857 stmf_scsilib_handle_report_tpgs(scsi_task_t *task, stmf_data_buf_t *dbuf) 5858 { 5859 stmf_i_scsi_task_t *itask = 5860 (stmf_i_scsi_task_t *)task->task_stmf_private; 5861 stmf_i_lu_t *ilu = 5862 (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 5863 stmf_xfer_data_t *xd; 5864 uint32_t sz, minsz; 5865 5866 itask->itask_flags |= ITASK_DEFAULT_HANDLING; 5867 task->task_cmd_xfer_length = 5868 ((((uint32_t)task->task_cdb[6]) << 24) | 5869 (((uint32_t)task->task_cdb[7]) << 16) | 5870 (((uint32_t)task->task_cdb[8]) << 8) | 5871 ((uint32_t)task->task_cdb[9])); 5872 5873 if (task->task_additional_flags & 5874 TASK_AF_NO_EXPECTED_XFER_LENGTH) { 5875 task->task_expected_xfer_length = 5876 task->task_cmd_xfer_length; 5877 } 5878 5879 if (task->task_cmd_xfer_length == 0) { 5880 stmf_scsilib_send_status(task, STATUS_GOOD, 0); 5881 return; 5882 } 5883 if (task->task_cmd_xfer_length < 4) { 5884 stmf_scsilib_send_status(task, STATUS_CHECK, 5885 STMF_SAA_INVALID_FIELD_IN_CDB); 5886 return; 5887 } 5888 5889 sz = min(task->task_expected_xfer_length, 5890 task->task_cmd_xfer_length); 5891 5892 xd = stmf_prepare_tpgs_data(ilu->ilu_alua); 5893 5894 if (xd == NULL) { 5895 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 5896 STMF_ALLOC_FAILURE, NULL); 5897 return; 5898 } 5899 5900 sz = min(sz, xd->size_left); 5901 xd->size_left = sz; 5902 minsz = min(512, sz); 5903 5904 if (dbuf == NULL) 5905 dbuf = stmf_alloc_dbuf(task, sz, &minsz, 0); 5906 if (dbuf == NULL) { 5907 kmem_free(xd, xd->alloc_size); 5908 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 5909 STMF_ALLOC_FAILURE, NULL); 5910 return; 5911 } 5912 dbuf->db_lu_private = xd; 5913 stmf_xd_to_dbuf(dbuf, 1); 5914 5915 dbuf->db_flags = DB_DIRECTION_TO_RPORT; 5916 (void) stmf_xfer_data(task, dbuf, 0); 5917 5918 } 5919 5920 void 5921 stmf_scsilib_handle_task_mgmt(scsi_task_t *task) 5922 { 5923 5924 switch (task->task_mgmt_function) { 5925 /* 5926 * For now we will abort all I/Os on the LU in case of ABORT_TASK_SET 5927 * and ABORT_TASK. But unlike LUN_RESET we will not reset LU state 5928 * in these cases. This needs to be changed to abort only the required 5929 * set. 5930 */ 5931 case TM_ABORT_TASK: 5932 case TM_ABORT_TASK_SET: 5933 case TM_CLEAR_TASK_SET: 5934 case TM_LUN_RESET: 5935 stmf_handle_lun_reset(task); 5936 /* issue the reset to the proxy node as well */ 5937 if (stmf_state.stmf_alua_state == 1) { 5938 (void) stmf_proxy_scsi_cmd(task, NULL); 5939 } 5940 return; 5941 case TM_TARGET_RESET: 5942 case TM_TARGET_COLD_RESET: 5943 case TM_TARGET_WARM_RESET: 5944 stmf_handle_target_reset(task); 5945 return; 5946 default: 5947 /* We dont support this task mgmt function */ 5948 stmf_scsilib_send_status(task, STATUS_CHECK, 5949 STMF_SAA_INVALID_FIELD_IN_CMD_IU); 5950 return; 5951 } 5952 } 5953 5954 void 5955 stmf_handle_lun_reset(scsi_task_t *task) 5956 { 5957 stmf_i_scsi_task_t *itask; 5958 stmf_i_lu_t *ilu; 5959 5960 itask = (stmf_i_scsi_task_t *)task->task_stmf_private; 5961 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 5962 5963 /* 5964 * To sync with target reset, grab this lock. The LU is not going 5965 * anywhere as there is atleast one task pending (this task). 5966 */ 5967 mutex_enter(&stmf_state.stmf_lock); 5968 5969 if (ilu->ilu_flags & ILU_RESET_ACTIVE) { 5970 mutex_exit(&stmf_state.stmf_lock); 5971 stmf_scsilib_send_status(task, STATUS_CHECK, 5972 STMF_SAA_OPERATION_IN_PROGRESS); 5973 return; 5974 } 5975 atomic_or_32(&ilu->ilu_flags, ILU_RESET_ACTIVE); 5976 mutex_exit(&stmf_state.stmf_lock); 5977 5978 /* 5979 * Mark this task as the one causing LU reset so that we know who 5980 * was responsible for setting the ILU_RESET_ACTIVE. In case this 5981 * task itself gets aborted, we will clear ILU_RESET_ACTIVE. 5982 */ 5983 itask->itask_flags |= ITASK_DEFAULT_HANDLING | ITASK_CAUSING_LU_RESET; 5984 5985 /* Initiatiate abort on all commands on this LU except this one */ 5986 stmf_abort(STMF_QUEUE_ABORT_LU, task, STMF_ABORTED, task->task_lu); 5987 5988 /* Start polling on this task */ 5989 if (stmf_task_poll_lu(task, ITASK_DEFAULT_POLL_TIMEOUT) 5990 != STMF_SUCCESS) { 5991 stmf_abort(STMF_QUEUE_TASK_ABORT, task, STMF_ALLOC_FAILURE, 5992 NULL); 5993 return; 5994 } 5995 } 5996 5997 void 5998 stmf_handle_target_reset(scsi_task_t *task) 5999 { 6000 stmf_i_scsi_task_t *itask; 6001 stmf_i_lu_t *ilu; 6002 stmf_i_scsi_session_t *iss; 6003 stmf_lun_map_t *lm; 6004 stmf_lun_map_ent_t *lm_ent; 6005 int i, lf; 6006 6007 itask = (stmf_i_scsi_task_t *)task->task_stmf_private; 6008 iss = (stmf_i_scsi_session_t *)task->task_session->ss_stmf_private; 6009 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 6010 6011 /* 6012 * To sync with LUN reset, grab this lock. The session is not going 6013 * anywhere as there is atleast one task pending (this task). 6014 */ 6015 mutex_enter(&stmf_state.stmf_lock); 6016 6017 /* Grab the session lock as a writer to prevent any changes in it */ 6018 rw_enter(iss->iss_lockp, RW_WRITER); 6019 6020 if (iss->iss_flags & ISS_RESET_ACTIVE) { 6021 rw_exit(iss->iss_lockp); 6022 mutex_exit(&stmf_state.stmf_lock); 6023 stmf_scsilib_send_status(task, STATUS_CHECK, 6024 STMF_SAA_OPERATION_IN_PROGRESS); 6025 return; 6026 } 6027 atomic_or_32(&iss->iss_flags, ISS_RESET_ACTIVE); 6028 6029 /* 6030 * Now go through each LUN in this session and make sure all of them 6031 * can be reset. 6032 */ 6033 lm = iss->iss_sm; 6034 for (i = 0, lf = 0; i < lm->lm_nentries; i++) { 6035 if (lm->lm_plus[i] == NULL) 6036 continue; 6037 lf++; 6038 lm_ent = (stmf_lun_map_ent_t *)lm->lm_plus[i]; 6039 ilu = (stmf_i_lu_t *)(lm_ent->ent_lu->lu_stmf_private); 6040 if (ilu->ilu_flags & ILU_RESET_ACTIVE) { 6041 atomic_and_32(&iss->iss_flags, ~ISS_RESET_ACTIVE); 6042 rw_exit(iss->iss_lockp); 6043 mutex_exit(&stmf_state.stmf_lock); 6044 stmf_scsilib_send_status(task, STATUS_CHECK, 6045 STMF_SAA_OPERATION_IN_PROGRESS); 6046 return; 6047 } 6048 } 6049 if (lf == 0) { 6050 /* No luns in this session */ 6051 atomic_and_32(&iss->iss_flags, ~ISS_RESET_ACTIVE); 6052 rw_exit(iss->iss_lockp); 6053 mutex_exit(&stmf_state.stmf_lock); 6054 stmf_scsilib_send_status(task, STATUS_GOOD, 0); 6055 return; 6056 } 6057 6058 /* ok, start the damage */ 6059 itask->itask_flags |= ITASK_DEFAULT_HANDLING | 6060 ITASK_CAUSING_TARGET_RESET; 6061 for (i = 0; i < lm->lm_nentries; i++) { 6062 if (lm->lm_plus[i] == NULL) 6063 continue; 6064 lm_ent = (stmf_lun_map_ent_t *)lm->lm_plus[i]; 6065 ilu = (stmf_i_lu_t *)(lm_ent->ent_lu->lu_stmf_private); 6066 atomic_or_32(&ilu->ilu_flags, ILU_RESET_ACTIVE); 6067 } 6068 6069 for (i = 0; i < lm->lm_nentries; i++) { 6070 if (lm->lm_plus[i] == NULL) 6071 continue; 6072 lm_ent = (stmf_lun_map_ent_t *)lm->lm_plus[i]; 6073 stmf_abort(STMF_QUEUE_ABORT_LU, task, STMF_ABORTED, 6074 lm_ent->ent_lu); 6075 } 6076 6077 rw_exit(iss->iss_lockp); 6078 mutex_exit(&stmf_state.stmf_lock); 6079 6080 /* Start polling on this task */ 6081 if (stmf_task_poll_lu(task, ITASK_DEFAULT_POLL_TIMEOUT) 6082 != STMF_SUCCESS) { 6083 stmf_abort(STMF_QUEUE_TASK_ABORT, task, STMF_ALLOC_FAILURE, 6084 NULL); 6085 return; 6086 } 6087 } 6088 6089 int 6090 stmf_handle_cmd_during_ic(stmf_i_scsi_task_t *itask) 6091 { 6092 scsi_task_t *task = itask->itask_task; 6093 stmf_i_scsi_session_t *iss = (stmf_i_scsi_session_t *) 6094 task->task_session->ss_stmf_private; 6095 6096 rw_enter(iss->iss_lockp, RW_WRITER); 6097 if (((iss->iss_flags & ISS_LUN_INVENTORY_CHANGED) == 0) || 6098 (task->task_cdb[0] == SCMD_INQUIRY)) { 6099 rw_exit(iss->iss_lockp); 6100 return (0); 6101 } 6102 atomic_and_32(&iss->iss_flags, 6103 ~(ISS_LUN_INVENTORY_CHANGED | ISS_GOT_INITIAL_LUNS)); 6104 rw_exit(iss->iss_lockp); 6105 6106 if (task->task_cdb[0] == SCMD_REPORT_LUNS) { 6107 return (0); 6108 } 6109 stmf_scsilib_send_status(task, STATUS_CHECK, 6110 STMF_SAA_REPORT_LUN_DATA_HAS_CHANGED); 6111 return (1); 6112 } 6113 6114 void 6115 stmf_worker_init() 6116 { 6117 uint32_t i; 6118 6119 /* Make local copy of global tunables */ 6120 stmf_i_max_nworkers = stmf_max_nworkers; 6121 stmf_i_min_nworkers = stmf_min_nworkers; 6122 6123 ASSERT(stmf_workers == NULL); 6124 if (stmf_i_min_nworkers < 4) { 6125 stmf_i_min_nworkers = 4; 6126 } 6127 if (stmf_i_max_nworkers < stmf_i_min_nworkers) { 6128 stmf_i_max_nworkers = stmf_i_min_nworkers; 6129 } 6130 stmf_workers = (stmf_worker_t *)kmem_zalloc( 6131 sizeof (stmf_worker_t) * stmf_i_max_nworkers, KM_SLEEP); 6132 for (i = 0; i < stmf_i_max_nworkers; i++) { 6133 stmf_worker_t *w = &stmf_workers[i]; 6134 mutex_init(&w->worker_lock, NULL, MUTEX_DRIVER, NULL); 6135 cv_init(&w->worker_cv, NULL, CV_DRIVER, NULL); 6136 } 6137 stmf_worker_mgmt_delay = drv_usectohz(20 * 1000); 6138 stmf_workers_state = STMF_WORKERS_ENABLED; 6139 6140 /* Workers will be started by stmf_worker_mgmt() */ 6141 6142 /* Lets wait for atleast one worker to start */ 6143 while (stmf_nworkers_cur == 0) 6144 delay(drv_usectohz(20 * 1000)); 6145 stmf_worker_mgmt_delay = drv_usectohz(3 * 1000 * 1000); 6146 } 6147 6148 stmf_status_t 6149 stmf_worker_fini() 6150 { 6151 int i; 6152 clock_t sb; 6153 6154 if (stmf_workers_state == STMF_WORKERS_DISABLED) 6155 return (STMF_SUCCESS); 6156 ASSERT(stmf_workers); 6157 stmf_workers_state = STMF_WORKERS_DISABLED; 6158 stmf_worker_mgmt_delay = drv_usectohz(20 * 1000); 6159 cv_signal(&stmf_state.stmf_cv); 6160 6161 sb = ddi_get_lbolt() + drv_usectohz(10 * 1000 * 1000); 6162 /* Wait for all the threads to die */ 6163 while (stmf_nworkers_cur != 0) { 6164 if (ddi_get_lbolt() > sb) { 6165 stmf_workers_state = STMF_WORKERS_ENABLED; 6166 return (STMF_BUSY); 6167 } 6168 delay(drv_usectohz(100 * 1000)); 6169 } 6170 for (i = 0; i < stmf_i_max_nworkers; i++) { 6171 stmf_worker_t *w = &stmf_workers[i]; 6172 mutex_destroy(&w->worker_lock); 6173 cv_destroy(&w->worker_cv); 6174 } 6175 kmem_free(stmf_workers, sizeof (stmf_worker_t) * stmf_i_max_nworkers); 6176 stmf_workers = NULL; 6177 6178 return (STMF_SUCCESS); 6179 } 6180 6181 void 6182 stmf_worker_task(void *arg) 6183 { 6184 stmf_worker_t *w; 6185 stmf_i_scsi_session_t *iss; 6186 scsi_task_t *task; 6187 stmf_i_scsi_task_t *itask; 6188 stmf_data_buf_t *dbuf; 6189 stmf_lu_t *lu; 6190 clock_t wait_timer = 0; 6191 clock_t wait_ticks, wait_delta = 0; 6192 uint32_t old, new; 6193 uint8_t curcmd; 6194 uint8_t abort_free; 6195 uint8_t wait_queue; 6196 uint8_t dec_qdepth; 6197 6198 w = (stmf_worker_t *)arg; 6199 wait_ticks = drv_usectohz(10000); 6200 6201 DTRACE_PROBE1(worker__create, stmf_worker_t, w); 6202 mutex_enter(&w->worker_lock); 6203 w->worker_flags |= STMF_WORKER_STARTED | STMF_WORKER_ACTIVE; 6204 stmf_worker_loop:; 6205 if ((w->worker_ref_count == 0) && 6206 (w->worker_flags & STMF_WORKER_TERMINATE)) { 6207 w->worker_flags &= ~(STMF_WORKER_STARTED | 6208 STMF_WORKER_ACTIVE | STMF_WORKER_TERMINATE); 6209 w->worker_tid = NULL; 6210 mutex_exit(&w->worker_lock); 6211 DTRACE_PROBE1(worker__destroy, stmf_worker_t, w); 6212 thread_exit(); 6213 } 6214 /* CONSTCOND */ 6215 while (1) { 6216 dec_qdepth = 0; 6217 if (wait_timer && (ddi_get_lbolt() >= wait_timer)) { 6218 wait_timer = 0; 6219 wait_delta = 0; 6220 if (w->worker_wait_head) { 6221 ASSERT(w->worker_wait_tail); 6222 if (w->worker_task_head == NULL) 6223 w->worker_task_head = 6224 w->worker_wait_head; 6225 else 6226 w->worker_task_tail->itask_worker_next = 6227 w->worker_wait_head; 6228 w->worker_task_tail = w->worker_wait_tail; 6229 w->worker_wait_head = w->worker_wait_tail = 6230 NULL; 6231 } 6232 } 6233 if ((itask = w->worker_task_head) == NULL) { 6234 break; 6235 } 6236 task = itask->itask_task; 6237 DTRACE_PROBE2(worker__active, stmf_worker_t, w, 6238 scsi_task_t *, task); 6239 w->worker_task_head = itask->itask_worker_next; 6240 if (w->worker_task_head == NULL) 6241 w->worker_task_tail = NULL; 6242 6243 wait_queue = 0; 6244 abort_free = 0; 6245 if (itask->itask_ncmds > 0) { 6246 curcmd = itask->itask_cmd_stack[itask->itask_ncmds - 1]; 6247 } else { 6248 ASSERT(itask->itask_flags & ITASK_BEING_ABORTED); 6249 } 6250 do { 6251 old = itask->itask_flags; 6252 if (old & ITASK_BEING_ABORTED) { 6253 itask->itask_ncmds = 1; 6254 curcmd = itask->itask_cmd_stack[0] = 6255 ITASK_CMD_ABORT; 6256 goto out_itask_flag_loop; 6257 } else if ((curcmd & ITASK_CMD_MASK) == 6258 ITASK_CMD_NEW_TASK) { 6259 /* 6260 * set ITASK_KSTAT_IN_RUNQ, this flag 6261 * will not reset until task completed 6262 */ 6263 new = old | ITASK_KNOWN_TO_LU | 6264 ITASK_KSTAT_IN_RUNQ; 6265 } else { 6266 goto out_itask_flag_loop; 6267 } 6268 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 6269 6270 out_itask_flag_loop: 6271 6272 /* 6273 * Decide if this task needs to go to a queue and/or if 6274 * we can decrement the itask_cmd_stack. 6275 */ 6276 if (curcmd == ITASK_CMD_ABORT) { 6277 if (itask->itask_flags & (ITASK_KNOWN_TO_LU | 6278 ITASK_KNOWN_TO_TGT_PORT)) { 6279 wait_queue = 1; 6280 } else { 6281 abort_free = 1; 6282 } 6283 } else if ((curcmd & ITASK_CMD_POLL) && 6284 (itask->itask_poll_timeout > ddi_get_lbolt())) { 6285 wait_queue = 1; 6286 } 6287 6288 if (wait_queue) { 6289 itask->itask_worker_next = NULL; 6290 if (w->worker_wait_tail) { 6291 w->worker_wait_tail->itask_worker_next = itask; 6292 } else { 6293 w->worker_wait_head = itask; 6294 } 6295 w->worker_wait_tail = itask; 6296 if (wait_timer == 0) { 6297 wait_timer = ddi_get_lbolt() + wait_ticks; 6298 wait_delta = wait_ticks; 6299 } 6300 } else if ((--(itask->itask_ncmds)) != 0) { 6301 itask->itask_worker_next = NULL; 6302 if (w->worker_task_tail) { 6303 w->worker_task_tail->itask_worker_next = itask; 6304 } else { 6305 w->worker_task_head = itask; 6306 } 6307 w->worker_task_tail = itask; 6308 } else { 6309 atomic_and_32(&itask->itask_flags, 6310 ~ITASK_IN_WORKER_QUEUE); 6311 /* 6312 * This is where the queue depth should go down by 6313 * one but we delay that on purpose to account for 6314 * the call into the provider. The actual decrement 6315 * happens after the worker has done its job. 6316 */ 6317 dec_qdepth = 1; 6318 itask->itask_waitq_time += 6319 gethrtime() - itask->itask_waitq_enter_timestamp; 6320 } 6321 6322 /* We made it here means we are going to call LU */ 6323 if ((itask->itask_flags & ITASK_DEFAULT_HANDLING) == 0) 6324 lu = task->task_lu; 6325 else 6326 lu = dlun0; 6327 dbuf = itask->itask_dbufs[ITASK_CMD_BUF_NDX(curcmd)]; 6328 mutex_exit(&w->worker_lock); 6329 curcmd &= ITASK_CMD_MASK; 6330 stmf_task_audit(itask, TE_PROCESS_CMD, curcmd, dbuf); 6331 switch (curcmd) { 6332 case ITASK_CMD_NEW_TASK: 6333 iss = (stmf_i_scsi_session_t *) 6334 task->task_session->ss_stmf_private; 6335 stmf_itl_lu_new_task(itask); 6336 if (iss->iss_flags & ISS_LUN_INVENTORY_CHANGED) { 6337 if (stmf_handle_cmd_during_ic(itask)) 6338 break; 6339 } 6340 #ifdef DEBUG 6341 if (stmf_drop_task_counter > 0) { 6342 if (atomic_dec_32_nv(&stmf_drop_task_counter) 6343 == 1) 6344 break; 6345 } 6346 #endif 6347 DTRACE_PROBE1(scsi__task__start, scsi_task_t *, task); 6348 lu->lu_new_task(task, dbuf); 6349 break; 6350 case ITASK_CMD_DATA_XFER_DONE: 6351 lu->lu_dbuf_xfer_done(task, dbuf); 6352 break; 6353 case ITASK_CMD_STATUS_DONE: 6354 lu->lu_send_status_done(task); 6355 break; 6356 case ITASK_CMD_ABORT: 6357 if (abort_free) { 6358 stmf_task_free(task); 6359 } else { 6360 stmf_do_task_abort(task); 6361 } 6362 break; 6363 case ITASK_CMD_POLL_LU: 6364 if (!wait_queue) { 6365 lu->lu_task_poll(task); 6366 } 6367 break; 6368 case ITASK_CMD_POLL_LPORT: 6369 if (!wait_queue) 6370 task->task_lport->lport_task_poll(task); 6371 break; 6372 case ITASK_CMD_SEND_STATUS: 6373 /* case ITASK_CMD_XFER_DATA: */ 6374 break; 6375 } 6376 mutex_enter(&w->worker_lock); 6377 if (dec_qdepth) { 6378 w->worker_queue_depth--; 6379 } 6380 } 6381 if ((w->worker_flags & STMF_WORKER_TERMINATE) && (wait_timer == 0)) { 6382 if (w->worker_ref_count == 0) 6383 goto stmf_worker_loop; 6384 else { 6385 wait_timer = ddi_get_lbolt() + 1; 6386 wait_delta = 1; 6387 } 6388 } 6389 w->worker_flags &= ~STMF_WORKER_ACTIVE; 6390 if (wait_timer) { 6391 DTRACE_PROBE1(worker__timed__sleep, stmf_worker_t, w); 6392 (void) cv_reltimedwait(&w->worker_cv, &w->worker_lock, 6393 wait_delta, TR_CLOCK_TICK); 6394 } else { 6395 DTRACE_PROBE1(worker__sleep, stmf_worker_t, w); 6396 cv_wait(&w->worker_cv, &w->worker_lock); 6397 } 6398 DTRACE_PROBE1(worker__wakeup, stmf_worker_t, w); 6399 w->worker_flags |= STMF_WORKER_ACTIVE; 6400 goto stmf_worker_loop; 6401 } 6402 6403 void 6404 stmf_worker_mgmt() 6405 { 6406 int i; 6407 int workers_needed; 6408 uint32_t qd; 6409 clock_t tps, d = 0; 6410 uint32_t cur_max_ntasks = 0; 6411 stmf_worker_t *w; 6412 6413 /* Check if we are trying to increase the # of threads */ 6414 for (i = stmf_nworkers_cur; i < stmf_nworkers_needed; i++) { 6415 if (stmf_workers[i].worker_flags & STMF_WORKER_STARTED) { 6416 stmf_nworkers_cur++; 6417 stmf_nworkers_accepting_cmds++; 6418 } else { 6419 /* Wait for transition to complete */ 6420 return; 6421 } 6422 } 6423 /* Check if we are trying to decrease the # of workers */ 6424 for (i = (stmf_nworkers_cur - 1); i >= stmf_nworkers_needed; i--) { 6425 if ((stmf_workers[i].worker_flags & STMF_WORKER_STARTED) == 0) { 6426 stmf_nworkers_cur--; 6427 /* 6428 * stmf_nworkers_accepting_cmds has already been 6429 * updated by the request to reduce the # of workers. 6430 */ 6431 } else { 6432 /* Wait for transition to complete */ 6433 return; 6434 } 6435 } 6436 /* Check if we are being asked to quit */ 6437 if (stmf_workers_state != STMF_WORKERS_ENABLED) { 6438 if (stmf_nworkers_cur) { 6439 workers_needed = 0; 6440 goto worker_mgmt_trigger_change; 6441 } 6442 return; 6443 } 6444 /* Check if we are starting */ 6445 if (stmf_nworkers_cur < stmf_i_min_nworkers) { 6446 workers_needed = stmf_i_min_nworkers; 6447 goto worker_mgmt_trigger_change; 6448 } 6449 6450 tps = drv_usectohz(1 * 1000 * 1000); 6451 if ((stmf_wm_last != 0) && 6452 ((d = ddi_get_lbolt() - stmf_wm_last) > tps)) { 6453 qd = 0; 6454 for (i = 0; i < stmf_nworkers_accepting_cmds; i++) { 6455 qd += stmf_workers[i].worker_max_qdepth_pu; 6456 stmf_workers[i].worker_max_qdepth_pu = 0; 6457 if (stmf_workers[i].worker_max_sys_qdepth_pu > 6458 cur_max_ntasks) { 6459 cur_max_ntasks = 6460 stmf_workers[i].worker_max_sys_qdepth_pu; 6461 } 6462 stmf_workers[i].worker_max_sys_qdepth_pu = 0; 6463 } 6464 } 6465 stmf_wm_last = ddi_get_lbolt(); 6466 if (d <= tps) { 6467 /* still ramping up */ 6468 return; 6469 } 6470 /* max qdepth cannot be more than max tasks */ 6471 if (qd > cur_max_ntasks) 6472 qd = cur_max_ntasks; 6473 6474 /* See if we have more workers */ 6475 if (qd < stmf_nworkers_accepting_cmds) { 6476 /* 6477 * Since we dont reduce the worker count right away, monitor 6478 * the highest load during the scale_down_delay. 6479 */ 6480 if (qd > stmf_worker_scale_down_qd) 6481 stmf_worker_scale_down_qd = qd; 6482 if (stmf_worker_scale_down_timer == 0) { 6483 stmf_worker_scale_down_timer = ddi_get_lbolt() + 6484 drv_usectohz(stmf_worker_scale_down_delay * 6485 1000 * 1000); 6486 return; 6487 } 6488 if (ddi_get_lbolt() < stmf_worker_scale_down_timer) { 6489 return; 6490 } 6491 /* Its time to reduce the workers */ 6492 if (stmf_worker_scale_down_qd < stmf_i_min_nworkers) 6493 stmf_worker_scale_down_qd = stmf_i_min_nworkers; 6494 if (stmf_worker_scale_down_qd > stmf_i_max_nworkers) 6495 stmf_worker_scale_down_qd = stmf_i_max_nworkers; 6496 if (stmf_worker_scale_down_qd == stmf_nworkers_cur) 6497 return; 6498 workers_needed = stmf_worker_scale_down_qd; 6499 stmf_worker_scale_down_qd = 0; 6500 goto worker_mgmt_trigger_change; 6501 } 6502 stmf_worker_scale_down_qd = 0; 6503 stmf_worker_scale_down_timer = 0; 6504 if (qd > stmf_i_max_nworkers) 6505 qd = stmf_i_max_nworkers; 6506 if (qd < stmf_i_min_nworkers) 6507 qd = stmf_i_min_nworkers; 6508 if (qd == stmf_nworkers_cur) 6509 return; 6510 workers_needed = qd; 6511 goto worker_mgmt_trigger_change; 6512 6513 /* NOTREACHED */ 6514 return; 6515 6516 worker_mgmt_trigger_change: 6517 ASSERT(workers_needed != stmf_nworkers_cur); 6518 if (workers_needed > stmf_nworkers_cur) { 6519 stmf_nworkers_needed = workers_needed; 6520 for (i = stmf_nworkers_cur; i < workers_needed; i++) { 6521 w = &stmf_workers[i]; 6522 w->worker_tid = thread_create(NULL, 0, stmf_worker_task, 6523 (void *)&stmf_workers[i], 0, &p0, TS_RUN, 6524 minclsyspri); 6525 } 6526 return; 6527 } 6528 /* At this point we know that we are decreasing the # of workers */ 6529 stmf_nworkers_accepting_cmds = workers_needed; 6530 stmf_nworkers_needed = workers_needed; 6531 /* Signal the workers that its time to quit */ 6532 for (i = (stmf_nworkers_cur - 1); i >= stmf_nworkers_needed; i--) { 6533 w = &stmf_workers[i]; 6534 ASSERT(w && (w->worker_flags & STMF_WORKER_STARTED)); 6535 mutex_enter(&w->worker_lock); 6536 w->worker_flags |= STMF_WORKER_TERMINATE; 6537 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0) 6538 cv_signal(&w->worker_cv); 6539 mutex_exit(&w->worker_lock); 6540 } 6541 } 6542 6543 /* 6544 * Fills out a dbuf from stmf_xfer_data_t (contained in the db_lu_private). 6545 * If all the data has been filled out, frees the xd and makes 6546 * db_lu_private NULL. 6547 */ 6548 void 6549 stmf_xd_to_dbuf(stmf_data_buf_t *dbuf, int set_rel_off) 6550 { 6551 stmf_xfer_data_t *xd; 6552 uint8_t *p; 6553 int i; 6554 uint32_t s; 6555 6556 xd = (stmf_xfer_data_t *)dbuf->db_lu_private; 6557 dbuf->db_data_size = 0; 6558 if (set_rel_off) 6559 dbuf->db_relative_offset = xd->size_done; 6560 for (i = 0; i < dbuf->db_sglist_length; i++) { 6561 s = min(xd->size_left, dbuf->db_sglist[i].seg_length); 6562 p = &xd->buf[xd->size_done]; 6563 bcopy(p, dbuf->db_sglist[i].seg_addr, s); 6564 xd->size_left -= s; 6565 xd->size_done += s; 6566 dbuf->db_data_size += s; 6567 if (xd->size_left == 0) { 6568 kmem_free(xd, xd->alloc_size); 6569 dbuf->db_lu_private = NULL; 6570 return; 6571 } 6572 } 6573 } 6574 6575 /* ARGSUSED */ 6576 stmf_status_t 6577 stmf_dlun0_task_alloc(scsi_task_t *task) 6578 { 6579 return (STMF_SUCCESS); 6580 } 6581 6582 void 6583 stmf_dlun0_new_task(scsi_task_t *task, stmf_data_buf_t *dbuf) 6584 { 6585 uint8_t *cdbp = (uint8_t *)&task->task_cdb[0]; 6586 stmf_i_scsi_session_t *iss; 6587 uint32_t sz, minsz; 6588 uint8_t *p; 6589 stmf_xfer_data_t *xd; 6590 uint8_t inq_page_length = 31; 6591 6592 if (task->task_mgmt_function) { 6593 stmf_scsilib_handle_task_mgmt(task); 6594 return; 6595 } 6596 6597 switch (cdbp[0]) { 6598 case SCMD_INQUIRY: 6599 /* 6600 * Basic protocol checks. In addition, only reply to 6601 * standard inquiry. Otherwise, the LU provider needs 6602 * to respond. 6603 */ 6604 6605 if (cdbp[2] || (cdbp[1] & 1) || cdbp[5]) { 6606 stmf_scsilib_send_status(task, STATUS_CHECK, 6607 STMF_SAA_INVALID_FIELD_IN_CDB); 6608 return; 6609 } 6610 6611 task->task_cmd_xfer_length = 6612 (((uint32_t)cdbp[3]) << 8) | cdbp[4]; 6613 6614 if (task->task_additional_flags & 6615 TASK_AF_NO_EXPECTED_XFER_LENGTH) { 6616 task->task_expected_xfer_length = 6617 task->task_cmd_xfer_length; 6618 } 6619 6620 sz = min(task->task_expected_xfer_length, 6621 min(36, task->task_cmd_xfer_length)); 6622 minsz = 36; 6623 6624 if (sz == 0) { 6625 stmf_scsilib_send_status(task, STATUS_GOOD, 0); 6626 return; 6627 } 6628 6629 if (dbuf && (dbuf->db_sglist[0].seg_length < 36)) { 6630 /* 6631 * Ignore any preallocated dbuf if the size is less 6632 * than 36. It will be freed during the task_free. 6633 */ 6634 dbuf = NULL; 6635 } 6636 if (dbuf == NULL) 6637 dbuf = stmf_alloc_dbuf(task, minsz, &minsz, 0); 6638 if ((dbuf == NULL) || (dbuf->db_sglist[0].seg_length < sz)) { 6639 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 6640 STMF_ALLOC_FAILURE, NULL); 6641 return; 6642 } 6643 dbuf->db_lu_private = NULL; 6644 6645 p = dbuf->db_sglist[0].seg_addr; 6646 6647 /* 6648 * Standard inquiry handling only. 6649 */ 6650 6651 bzero(p, inq_page_length + 5); 6652 6653 p[0] = DPQ_SUPPORTED | DTYPE_UNKNOWN; 6654 p[2] = 5; 6655 p[3] = 0x12; 6656 p[4] = inq_page_length; 6657 p[6] = 0x80; 6658 6659 (void) strncpy((char *)p+8, "SUN ", 8); 6660 (void) strncpy((char *)p+16, "COMSTAR ", 16); 6661 (void) strncpy((char *)p+32, "1.0 ", 4); 6662 6663 dbuf->db_data_size = sz; 6664 dbuf->db_relative_offset = 0; 6665 dbuf->db_flags = DB_DIRECTION_TO_RPORT; 6666 (void) stmf_xfer_data(task, dbuf, 0); 6667 6668 return; 6669 6670 case SCMD_REPORT_LUNS: 6671 task->task_cmd_xfer_length = 6672 ((((uint32_t)task->task_cdb[6]) << 24) | 6673 (((uint32_t)task->task_cdb[7]) << 16) | 6674 (((uint32_t)task->task_cdb[8]) << 8) | 6675 ((uint32_t)task->task_cdb[9])); 6676 6677 if (task->task_additional_flags & 6678 TASK_AF_NO_EXPECTED_XFER_LENGTH) { 6679 task->task_expected_xfer_length = 6680 task->task_cmd_xfer_length; 6681 } 6682 6683 sz = min(task->task_expected_xfer_length, 6684 task->task_cmd_xfer_length); 6685 6686 if (sz < 16) { 6687 stmf_scsilib_send_status(task, STATUS_CHECK, 6688 STMF_SAA_INVALID_FIELD_IN_CDB); 6689 return; 6690 } 6691 6692 iss = (stmf_i_scsi_session_t *) 6693 task->task_session->ss_stmf_private; 6694 rw_enter(iss->iss_lockp, RW_WRITER); 6695 xd = stmf_session_prepare_report_lun_data(iss->iss_sm); 6696 rw_exit(iss->iss_lockp); 6697 6698 if (xd == NULL) { 6699 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 6700 STMF_ALLOC_FAILURE, NULL); 6701 return; 6702 } 6703 6704 sz = min(sz, xd->size_left); 6705 xd->size_left = sz; 6706 minsz = min(512, sz); 6707 6708 if (dbuf == NULL) 6709 dbuf = stmf_alloc_dbuf(task, sz, &minsz, 0); 6710 if (dbuf == NULL) { 6711 kmem_free(xd, xd->alloc_size); 6712 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 6713 STMF_ALLOC_FAILURE, NULL); 6714 return; 6715 } 6716 dbuf->db_lu_private = xd; 6717 stmf_xd_to_dbuf(dbuf, 1); 6718 6719 atomic_and_32(&iss->iss_flags, 6720 ~(ISS_LUN_INVENTORY_CHANGED | ISS_GOT_INITIAL_LUNS)); 6721 dbuf->db_flags = DB_DIRECTION_TO_RPORT; 6722 (void) stmf_xfer_data(task, dbuf, 0); 6723 return; 6724 } 6725 6726 stmf_scsilib_send_status(task, STATUS_CHECK, STMF_SAA_INVALID_OPCODE); 6727 } 6728 6729 void 6730 stmf_dlun0_dbuf_done(scsi_task_t *task, stmf_data_buf_t *dbuf) 6731 { 6732 stmf_i_scsi_task_t *itask = 6733 (stmf_i_scsi_task_t *)task->task_stmf_private; 6734 6735 if (dbuf->db_xfer_status != STMF_SUCCESS) { 6736 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 6737 dbuf->db_xfer_status, NULL); 6738 return; 6739 } 6740 task->task_nbytes_transferred += dbuf->db_data_size; 6741 if (dbuf->db_lu_private) { 6742 /* There is more */ 6743 stmf_xd_to_dbuf(dbuf, 1); 6744 (void) stmf_xfer_data(task, dbuf, 0); 6745 return; 6746 } 6747 6748 stmf_free_dbuf(task, dbuf); 6749 /* 6750 * If this is a proxy task, it will need to be completed from the 6751 * proxy port provider. This message lets pppt know that the xfer 6752 * is complete. When we receive the status from pppt, we will 6753 * then relay that status back to the lport. 6754 */ 6755 if (itask->itask_flags & ITASK_PROXY_TASK) { 6756 stmf_ic_msg_t *ic_xfer_done_msg = NULL; 6757 stmf_status_t ic_ret = STMF_FAILURE; 6758 uint64_t session_msg_id; 6759 mutex_enter(&stmf_state.stmf_lock); 6760 session_msg_id = stmf_proxy_msg_id++; 6761 mutex_exit(&stmf_state.stmf_lock); 6762 /* send xfer done status to pppt */ 6763 ic_xfer_done_msg = ic_scsi_data_xfer_done_msg_alloc( 6764 itask->itask_proxy_msg_id, 6765 task->task_session->ss_session_id, 6766 STMF_SUCCESS, session_msg_id); 6767 if (ic_xfer_done_msg) { 6768 ic_ret = ic_tx_msg(ic_xfer_done_msg); 6769 if (ic_ret != STMF_IC_MSG_SUCCESS) { 6770 cmn_err(CE_WARN, "unable to xmit session msg"); 6771 } 6772 } 6773 /* task will be completed from pppt */ 6774 return; 6775 } 6776 stmf_scsilib_send_status(task, STATUS_GOOD, 0); 6777 } 6778 6779 /* ARGSUSED */ 6780 void 6781 stmf_dlun0_status_done(scsi_task_t *task) 6782 { 6783 } 6784 6785 /* ARGSUSED */ 6786 void 6787 stmf_dlun0_task_free(scsi_task_t *task) 6788 { 6789 } 6790 6791 /* ARGSUSED */ 6792 stmf_status_t 6793 stmf_dlun0_abort(struct stmf_lu *lu, int abort_cmd, void *arg, uint32_t flags) 6794 { 6795 scsi_task_t *task = (scsi_task_t *)arg; 6796 stmf_i_scsi_task_t *itask = 6797 (stmf_i_scsi_task_t *)task->task_stmf_private; 6798 stmf_i_lu_t *ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 6799 int i; 6800 uint8_t map; 6801 6802 if ((task->task_mgmt_function) && (itask->itask_flags & 6803 (ITASK_CAUSING_LU_RESET | ITASK_CAUSING_TARGET_RESET))) { 6804 switch (task->task_mgmt_function) { 6805 case TM_ABORT_TASK: 6806 case TM_ABORT_TASK_SET: 6807 case TM_CLEAR_TASK_SET: 6808 case TM_LUN_RESET: 6809 atomic_and_32(&ilu->ilu_flags, ~ILU_RESET_ACTIVE); 6810 break; 6811 case TM_TARGET_RESET: 6812 case TM_TARGET_COLD_RESET: 6813 case TM_TARGET_WARM_RESET: 6814 stmf_abort_target_reset(task); 6815 break; 6816 } 6817 return (STMF_ABORT_SUCCESS); 6818 } 6819 6820 /* 6821 * OK so its not a task mgmt. Make sure we free any xd sitting 6822 * inside any dbuf. 6823 */ 6824 if ((map = itask->itask_allocated_buf_map) != 0) { 6825 for (i = 0; i < 4; i++) { 6826 if ((map & 1) && 6827 ((itask->itask_dbufs[i])->db_lu_private)) { 6828 stmf_xfer_data_t *xd; 6829 stmf_data_buf_t *dbuf; 6830 6831 dbuf = itask->itask_dbufs[i]; 6832 xd = (stmf_xfer_data_t *)dbuf->db_lu_private; 6833 dbuf->db_lu_private = NULL; 6834 kmem_free(xd, xd->alloc_size); 6835 } 6836 map >>= 1; 6837 } 6838 } 6839 return (STMF_ABORT_SUCCESS); 6840 } 6841 6842 void 6843 stmf_dlun0_task_poll(struct scsi_task *task) 6844 { 6845 /* Right now we only do this for handling task management functions */ 6846 ASSERT(task->task_mgmt_function); 6847 6848 switch (task->task_mgmt_function) { 6849 case TM_ABORT_TASK: 6850 case TM_ABORT_TASK_SET: 6851 case TM_CLEAR_TASK_SET: 6852 case TM_LUN_RESET: 6853 (void) stmf_lun_reset_poll(task->task_lu, task, 0); 6854 return; 6855 case TM_TARGET_RESET: 6856 case TM_TARGET_COLD_RESET: 6857 case TM_TARGET_WARM_RESET: 6858 stmf_target_reset_poll(task); 6859 return; 6860 } 6861 } 6862 6863 /* ARGSUSED */ 6864 void 6865 stmf_dlun0_ctl(struct stmf_lu *lu, int cmd, void *arg) 6866 { 6867 /* This function will never be called */ 6868 cmn_err(CE_WARN, "stmf_dlun0_ctl called with cmd %x", cmd); 6869 } 6870 6871 void 6872 stmf_dlun_init() 6873 { 6874 stmf_i_lu_t *ilu; 6875 6876 dlun0 = stmf_alloc(STMF_STRUCT_STMF_LU, 0, 0); 6877 dlun0->lu_task_alloc = stmf_dlun0_task_alloc; 6878 dlun0->lu_new_task = stmf_dlun0_new_task; 6879 dlun0->lu_dbuf_xfer_done = stmf_dlun0_dbuf_done; 6880 dlun0->lu_send_status_done = stmf_dlun0_status_done; 6881 dlun0->lu_task_free = stmf_dlun0_task_free; 6882 dlun0->lu_abort = stmf_dlun0_abort; 6883 dlun0->lu_task_poll = stmf_dlun0_task_poll; 6884 dlun0->lu_ctl = stmf_dlun0_ctl; 6885 6886 ilu = (stmf_i_lu_t *)dlun0->lu_stmf_private; 6887 ilu->ilu_cur_task_cntr = &ilu->ilu_task_cntr1; 6888 } 6889 6890 stmf_status_t 6891 stmf_dlun_fini() 6892 { 6893 stmf_i_lu_t *ilu; 6894 6895 ilu = (stmf_i_lu_t *)dlun0->lu_stmf_private; 6896 6897 ASSERT(ilu->ilu_ntasks == ilu->ilu_ntasks_free); 6898 if (ilu->ilu_ntasks) { 6899 stmf_i_scsi_task_t *itask, *nitask; 6900 6901 nitask = ilu->ilu_tasks; 6902 do { 6903 itask = nitask; 6904 nitask = itask->itask_lu_next; 6905 dlun0->lu_task_free(itask->itask_task); 6906 stmf_free(itask->itask_task); 6907 } while (nitask != NULL); 6908 6909 } 6910 stmf_free(dlun0); 6911 return (STMF_SUCCESS); 6912 } 6913 6914 void 6915 stmf_abort_target_reset(scsi_task_t *task) 6916 { 6917 stmf_i_scsi_session_t *iss = (stmf_i_scsi_session_t *) 6918 task->task_session->ss_stmf_private; 6919 stmf_lun_map_t *lm; 6920 stmf_lun_map_ent_t *lm_ent; 6921 stmf_i_lu_t *ilu; 6922 int i; 6923 6924 rw_enter(iss->iss_lockp, RW_READER); 6925 lm = iss->iss_sm; 6926 for (i = 0; i < lm->lm_nentries; i++) { 6927 if (lm->lm_plus[i] == NULL) 6928 continue; 6929 lm_ent = (stmf_lun_map_ent_t *)lm->lm_plus[i]; 6930 ilu = (stmf_i_lu_t *)lm_ent->ent_lu->lu_stmf_private; 6931 if (ilu->ilu_flags & ILU_RESET_ACTIVE) { 6932 atomic_and_32(&ilu->ilu_flags, ~ILU_RESET_ACTIVE); 6933 } 6934 } 6935 atomic_and_32(&iss->iss_flags, ~ISS_RESET_ACTIVE); 6936 rw_exit(iss->iss_lockp); 6937 } 6938 6939 /* 6940 * The return value is only used by function managing target reset. 6941 */ 6942 stmf_status_t 6943 stmf_lun_reset_poll(stmf_lu_t *lu, struct scsi_task *task, int target_reset) 6944 { 6945 stmf_i_lu_t *ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 6946 int ntasks_pending; 6947 6948 ntasks_pending = ilu->ilu_ntasks - ilu->ilu_ntasks_free; 6949 /* 6950 * This function is also used during Target reset. The idea is that 6951 * once all the commands are aborted, call the LU's reset entry 6952 * point (abort entry point with a reset flag). But if this Task 6953 * mgmt is running on this LU then all the tasks cannot be aborted. 6954 * one task (this task) will still be running which is OK. 6955 */ 6956 if ((ntasks_pending == 0) || ((task->task_lu == lu) && 6957 (ntasks_pending == 1))) { 6958 stmf_status_t ret; 6959 6960 if ((task->task_mgmt_function == TM_LUN_RESET) || 6961 (task->task_mgmt_function == TM_TARGET_RESET) || 6962 (task->task_mgmt_function == TM_TARGET_WARM_RESET) || 6963 (task->task_mgmt_function == TM_TARGET_COLD_RESET)) { 6964 ret = lu->lu_abort(lu, STMF_LU_RESET_STATE, task, 0); 6965 } else { 6966 ret = STMF_SUCCESS; 6967 } 6968 if (ret == STMF_SUCCESS) { 6969 atomic_and_32(&ilu->ilu_flags, ~ILU_RESET_ACTIVE); 6970 } 6971 if (target_reset) { 6972 return (ret); 6973 } 6974 if (ret == STMF_SUCCESS) { 6975 stmf_scsilib_send_status(task, STATUS_GOOD, 0); 6976 return (ret); 6977 } 6978 if (ret != STMF_BUSY) { 6979 stmf_abort(STMF_QUEUE_TASK_ABORT, task, ret, NULL); 6980 return (ret); 6981 } 6982 } 6983 6984 if (target_reset) { 6985 /* Tell target reset polling code that we are not done */ 6986 return (STMF_BUSY); 6987 } 6988 6989 if (stmf_task_poll_lu(task, ITASK_DEFAULT_POLL_TIMEOUT) 6990 != STMF_SUCCESS) { 6991 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 6992 STMF_ALLOC_FAILURE, NULL); 6993 return (STMF_SUCCESS); 6994 } 6995 6996 return (STMF_SUCCESS); 6997 } 6998 6999 void 7000 stmf_target_reset_poll(struct scsi_task *task) 7001 { 7002 stmf_i_scsi_session_t *iss = (stmf_i_scsi_session_t *) 7003 task->task_session->ss_stmf_private; 7004 stmf_lun_map_t *lm; 7005 stmf_lun_map_ent_t *lm_ent; 7006 stmf_i_lu_t *ilu; 7007 stmf_status_t ret; 7008 int i; 7009 int not_done = 0; 7010 7011 ASSERT(iss->iss_flags & ISS_RESET_ACTIVE); 7012 7013 rw_enter(iss->iss_lockp, RW_READER); 7014 lm = iss->iss_sm; 7015 for (i = 0; i < lm->lm_nentries; i++) { 7016 if (lm->lm_plus[i] == NULL) 7017 continue; 7018 lm_ent = (stmf_lun_map_ent_t *)lm->lm_plus[i]; 7019 ilu = (stmf_i_lu_t *)lm_ent->ent_lu->lu_stmf_private; 7020 if (ilu->ilu_flags & ILU_RESET_ACTIVE) { 7021 rw_exit(iss->iss_lockp); 7022 ret = stmf_lun_reset_poll(lm_ent->ent_lu, task, 1); 7023 rw_enter(iss->iss_lockp, RW_READER); 7024 if (ret == STMF_SUCCESS) 7025 continue; 7026 not_done = 1; 7027 if (ret != STMF_BUSY) { 7028 rw_exit(iss->iss_lockp); 7029 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 7030 STMF_ABORTED, NULL); 7031 return; 7032 } 7033 } 7034 } 7035 rw_exit(iss->iss_lockp); 7036 7037 if (not_done) { 7038 if (stmf_task_poll_lu(task, ITASK_DEFAULT_POLL_TIMEOUT) 7039 != STMF_SUCCESS) { 7040 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 7041 STMF_ALLOC_FAILURE, NULL); 7042 return; 7043 } 7044 return; 7045 } 7046 7047 atomic_and_32(&iss->iss_flags, ~ISS_RESET_ACTIVE); 7048 7049 stmf_scsilib_send_status(task, STATUS_GOOD, 0); 7050 } 7051 7052 stmf_status_t 7053 stmf_lu_add_event(stmf_lu_t *lu, int eventid) 7054 { 7055 stmf_i_lu_t *ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 7056 7057 if ((eventid < 0) || (eventid >= STMF_MAX_NUM_EVENTS)) { 7058 return (STMF_INVALID_ARG); 7059 } 7060 7061 STMF_EVENT_ADD(ilu->ilu_event_hdl, eventid); 7062 return (STMF_SUCCESS); 7063 } 7064 7065 stmf_status_t 7066 stmf_lu_remove_event(stmf_lu_t *lu, int eventid) 7067 { 7068 stmf_i_lu_t *ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 7069 7070 if (eventid == STMF_EVENT_ALL) { 7071 STMF_EVENT_CLEAR_ALL(ilu->ilu_event_hdl); 7072 return (STMF_SUCCESS); 7073 } 7074 7075 if ((eventid < 0) || (eventid >= STMF_MAX_NUM_EVENTS)) { 7076 return (STMF_INVALID_ARG); 7077 } 7078 7079 STMF_EVENT_REMOVE(ilu->ilu_event_hdl, eventid); 7080 return (STMF_SUCCESS); 7081 } 7082 7083 stmf_status_t 7084 stmf_lport_add_event(stmf_local_port_t *lport, int eventid) 7085 { 7086 stmf_i_local_port_t *ilport = 7087 (stmf_i_local_port_t *)lport->lport_stmf_private; 7088 7089 if ((eventid < 0) || (eventid >= STMF_MAX_NUM_EVENTS)) { 7090 return (STMF_INVALID_ARG); 7091 } 7092 7093 STMF_EVENT_ADD(ilport->ilport_event_hdl, eventid); 7094 return (STMF_SUCCESS); 7095 } 7096 7097 stmf_status_t 7098 stmf_lport_remove_event(stmf_local_port_t *lport, int eventid) 7099 { 7100 stmf_i_local_port_t *ilport = 7101 (stmf_i_local_port_t *)lport->lport_stmf_private; 7102 7103 if (eventid == STMF_EVENT_ALL) { 7104 STMF_EVENT_CLEAR_ALL(ilport->ilport_event_hdl); 7105 return (STMF_SUCCESS); 7106 } 7107 7108 if ((eventid < 0) || (eventid >= STMF_MAX_NUM_EVENTS)) { 7109 return (STMF_INVALID_ARG); 7110 } 7111 7112 STMF_EVENT_REMOVE(ilport->ilport_event_hdl, eventid); 7113 return (STMF_SUCCESS); 7114 } 7115 7116 void 7117 stmf_generate_lu_event(stmf_i_lu_t *ilu, int eventid, void *arg, uint32_t flags) 7118 { 7119 if (STMF_EVENT_ENABLED(ilu->ilu_event_hdl, eventid) && 7120 (ilu->ilu_lu->lu_event_handler != NULL)) { 7121 ilu->ilu_lu->lu_event_handler(ilu->ilu_lu, eventid, arg, flags); 7122 } 7123 } 7124 7125 void 7126 stmf_generate_lport_event(stmf_i_local_port_t *ilport, int eventid, void *arg, 7127 uint32_t flags) 7128 { 7129 if (STMF_EVENT_ENABLED(ilport->ilport_event_hdl, eventid) && 7130 (ilport->ilport_lport->lport_event_handler != NULL)) { 7131 ilport->ilport_lport->lport_event_handler( 7132 ilport->ilport_lport, eventid, arg, flags); 7133 } 7134 } 7135 7136 /* 7137 * With the possibility of having multiple itl sessions pointing to the 7138 * same itl_kstat_info, the ilu_kstat_lock mutex is used to synchronize 7139 * the kstat update of the ilu_kstat_io, itl_kstat_taskq and itl_kstat_lu_xfer 7140 * statistics. 7141 */ 7142 void 7143 stmf_itl_task_start(stmf_i_scsi_task_t *itask) 7144 { 7145 stmf_itl_data_t *itl = itask->itask_itl_datap; 7146 scsi_task_t *task = itask->itask_task; 7147 stmf_i_lu_t *ilu; 7148 7149 if (itl == NULL || task->task_lu == dlun0) 7150 return; 7151 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 7152 itask->itask_start_timestamp = gethrtime(); 7153 if (ilu->ilu_kstat_io != NULL) { 7154 mutex_enter(ilu->ilu_kstat_io->ks_lock); 7155 stmf_update_kstat_lu_q(itask->itask_task, kstat_waitq_enter); 7156 mutex_exit(ilu->ilu_kstat_io->ks_lock); 7157 } 7158 7159 stmf_update_kstat_lport_q(itask->itask_task, kstat_waitq_enter); 7160 } 7161 7162 void 7163 stmf_itl_lu_new_task(stmf_i_scsi_task_t *itask) 7164 { 7165 stmf_itl_data_t *itl = itask->itask_itl_datap; 7166 scsi_task_t *task = itask->itask_task; 7167 stmf_i_lu_t *ilu; 7168 7169 if (itl == NULL || task->task_lu == dlun0) 7170 return; 7171 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 7172 if (ilu->ilu_kstat_io != NULL) { 7173 mutex_enter(ilu->ilu_kstat_io->ks_lock); 7174 stmf_update_kstat_lu_q(itask->itask_task, kstat_waitq_to_runq); 7175 mutex_exit(ilu->ilu_kstat_io->ks_lock); 7176 } 7177 7178 stmf_update_kstat_lport_q(itask->itask_task, kstat_waitq_to_runq); 7179 } 7180 7181 void 7182 stmf_itl_task_done(stmf_i_scsi_task_t *itask) 7183 { 7184 stmf_itl_data_t *itl = itask->itask_itl_datap; 7185 scsi_task_t *task = itask->itask_task; 7186 stmf_i_lu_t *ilu; 7187 7188 itask->itask_done_timestamp = gethrtime(); 7189 7190 if (itl == NULL || task->task_lu == dlun0) 7191 return; 7192 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 7193 7194 if (ilu->ilu_kstat_io == NULL) 7195 return; 7196 7197 mutex_enter(ilu->ilu_kstat_io->ks_lock); 7198 7199 if (itask->itask_flags & ITASK_KSTAT_IN_RUNQ) { 7200 stmf_update_kstat_lu_q(task, kstat_runq_exit); 7201 mutex_exit(ilu->ilu_kstat_io->ks_lock); 7202 stmf_update_kstat_lport_q(task, kstat_runq_exit); 7203 } else { 7204 stmf_update_kstat_lu_q(task, kstat_waitq_exit); 7205 mutex_exit(ilu->ilu_kstat_io->ks_lock); 7206 stmf_update_kstat_lport_q(task, kstat_waitq_exit); 7207 } 7208 } 7209 7210 static void 7211 stmf_lport_xfer_start(stmf_i_scsi_task_t *itask, stmf_data_buf_t *dbuf) 7212 { 7213 stmf_itl_data_t *itl = itask->itask_itl_datap; 7214 7215 if (itl == NULL) 7216 return; 7217 7218 DTRACE_PROBE2(scsi__xfer__start, scsi_task_t *, itask->itask_task, 7219 stmf_data_buf_t *, dbuf); 7220 7221 dbuf->db_xfer_start_timestamp = gethrtime(); 7222 } 7223 7224 static void 7225 stmf_lport_xfer_done(stmf_i_scsi_task_t *itask, stmf_data_buf_t *dbuf) 7226 { 7227 stmf_itl_data_t *itl = itask->itask_itl_datap; 7228 hrtime_t elapsed_time; 7229 uint64_t xfer_size; 7230 7231 if (itl == NULL) 7232 return; 7233 7234 xfer_size = (dbuf->db_xfer_status == STMF_SUCCESS) ? 7235 dbuf->db_data_size : 0; 7236 7237 elapsed_time = gethrtime() - dbuf->db_xfer_start_timestamp; 7238 if (dbuf->db_flags & DB_DIRECTION_TO_RPORT) { 7239 atomic_add_64((uint64_t *)&itask->itask_lport_read_time, 7240 elapsed_time); 7241 atomic_add_64((uint64_t *)&itask->itask_read_xfer, 7242 xfer_size); 7243 } else { 7244 atomic_add_64((uint64_t *)&itask->itask_lport_write_time, 7245 elapsed_time); 7246 atomic_add_64((uint64_t *)&itask->itask_write_xfer, 7247 xfer_size); 7248 } 7249 7250 DTRACE_PROBE3(scsi__xfer__end, scsi_task_t *, itask->itask_task, 7251 stmf_data_buf_t *, dbuf, hrtime_t, elapsed_time); 7252 7253 dbuf->db_xfer_start_timestamp = 0; 7254 } 7255 7256 void 7257 stmf_svc_init() 7258 { 7259 if (stmf_state.stmf_svc_flags & STMF_SVC_STARTED) 7260 return; 7261 stmf_state.stmf_svc_tailp = &stmf_state.stmf_svc_active; 7262 stmf_state.stmf_svc_taskq = ddi_taskq_create(0, "STMF_SVC_TASKQ", 1, 7263 TASKQ_DEFAULTPRI, 0); 7264 (void) ddi_taskq_dispatch(stmf_state.stmf_svc_taskq, 7265 stmf_svc, 0, DDI_SLEEP); 7266 } 7267 7268 stmf_status_t 7269 stmf_svc_fini() 7270 { 7271 uint32_t i; 7272 7273 mutex_enter(&stmf_state.stmf_lock); 7274 if (stmf_state.stmf_svc_flags & STMF_SVC_STARTED) { 7275 stmf_state.stmf_svc_flags |= STMF_SVC_TERMINATE; 7276 cv_signal(&stmf_state.stmf_cv); 7277 } 7278 mutex_exit(&stmf_state.stmf_lock); 7279 7280 /* Wait for 5 seconds */ 7281 for (i = 0; i < 500; i++) { 7282 if (stmf_state.stmf_svc_flags & STMF_SVC_STARTED) 7283 delay(drv_usectohz(10000)); 7284 else 7285 break; 7286 } 7287 if (i == 500) 7288 return (STMF_BUSY); 7289 7290 ddi_taskq_destroy(stmf_state.stmf_svc_taskq); 7291 7292 return (STMF_SUCCESS); 7293 } 7294 7295 struct stmf_svc_clocks { 7296 clock_t drain_start, drain_next; 7297 clock_t timing_start, timing_next; 7298 clock_t worker_delay; 7299 }; 7300 7301 /* ARGSUSED */ 7302 void 7303 stmf_svc(void *arg) 7304 { 7305 stmf_svc_req_t *req; 7306 stmf_lu_t *lu; 7307 stmf_i_lu_t *ilu; 7308 stmf_local_port_t *lport; 7309 struct stmf_svc_clocks clks = { 0 }; 7310 7311 mutex_enter(&stmf_state.stmf_lock); 7312 stmf_state.stmf_svc_flags |= STMF_SVC_STARTED | STMF_SVC_ACTIVE; 7313 7314 while (!(stmf_state.stmf_svc_flags & STMF_SVC_TERMINATE)) { 7315 if (stmf_state.stmf_svc_active == NULL) { 7316 stmf_svc_timeout(&clks); 7317 continue; 7318 } 7319 7320 /* 7321 * Pop the front request from the active list. After this, 7322 * the request will no longer be referenced by global state, 7323 * so it should be safe to access it without holding the 7324 * stmf state lock. 7325 */ 7326 req = stmf_state.stmf_svc_active; 7327 stmf_state.stmf_svc_active = req->svc_next; 7328 7329 if (stmf_state.stmf_svc_active == NULL) 7330 stmf_state.stmf_svc_tailp = &stmf_state.stmf_svc_active; 7331 7332 switch (req->svc_cmd) { 7333 case STMF_CMD_LPORT_ONLINE: 7334 /* Fallthrough */ 7335 case STMF_CMD_LPORT_OFFLINE: 7336 mutex_exit(&stmf_state.stmf_lock); 7337 lport = (stmf_local_port_t *)req->svc_obj; 7338 lport->lport_ctl(lport, req->svc_cmd, &req->svc_info); 7339 break; 7340 case STMF_CMD_LU_ONLINE: 7341 mutex_exit(&stmf_state.stmf_lock); 7342 lu = (stmf_lu_t *)req->svc_obj; 7343 lu->lu_ctl(lu, req->svc_cmd, &req->svc_info); 7344 break; 7345 case STMF_CMD_LU_OFFLINE: 7346 /* Remove all mappings of this LU */ 7347 stmf_session_lu_unmapall((stmf_lu_t *)req->svc_obj); 7348 /* Kill all the pending I/Os for this LU */ 7349 mutex_exit(&stmf_state.stmf_lock); 7350 stmf_task_lu_killall((stmf_lu_t *)req->svc_obj, NULL, 7351 STMF_ABORTED); 7352 lu = (stmf_lu_t *)req->svc_obj; 7353 ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 7354 stmf_wait_ilu_tasks_finish(ilu); 7355 lu->lu_ctl(lu, req->svc_cmd, &req->svc_info); 7356 break; 7357 default: 7358 cmn_err(CE_PANIC, "stmf_svc: unknown cmd %d", 7359 req->svc_cmd); 7360 } 7361 7362 kmem_free(req, req->svc_req_alloc_size); 7363 mutex_enter(&stmf_state.stmf_lock); 7364 } 7365 7366 stmf_state.stmf_svc_flags &= ~(STMF_SVC_STARTED | STMF_SVC_ACTIVE); 7367 mutex_exit(&stmf_state.stmf_lock); 7368 } 7369 7370 static void 7371 stmf_svc_timeout(struct stmf_svc_clocks *clks) 7372 { 7373 clock_t td; 7374 stmf_i_local_port_t *ilport, *next_ilport; 7375 stmf_i_scsi_session_t *iss; 7376 7377 ASSERT(mutex_owned(&stmf_state.stmf_lock)); 7378 7379 td = drv_usectohz(20000); 7380 7381 /* Do timeouts */ 7382 if (stmf_state.stmf_nlus && 7383 ((!clks->timing_next) || (ddi_get_lbolt() >= clks->timing_next))) { 7384 if (!stmf_state.stmf_svc_ilu_timing) { 7385 /* we are starting a new round */ 7386 stmf_state.stmf_svc_ilu_timing = 7387 stmf_state.stmf_ilulist; 7388 clks->timing_start = ddi_get_lbolt(); 7389 } 7390 7391 stmf_check_ilu_timing(); 7392 if (!stmf_state.stmf_svc_ilu_timing) { 7393 /* we finished a complete round */ 7394 clks->timing_next = 7395 clks->timing_start + drv_usectohz(5*1000*1000); 7396 } else { 7397 /* we still have some ilu items to check */ 7398 clks->timing_next = 7399 ddi_get_lbolt() + drv_usectohz(1*1000*1000); 7400 } 7401 7402 if (stmf_state.stmf_svc_active) 7403 return; 7404 } 7405 7406 /* Check if there are free tasks to clear */ 7407 if (stmf_state.stmf_nlus && 7408 ((!clks->drain_next) || (ddi_get_lbolt() >= clks->drain_next))) { 7409 if (!stmf_state.stmf_svc_ilu_draining) { 7410 /* we are starting a new round */ 7411 stmf_state.stmf_svc_ilu_draining = 7412 stmf_state.stmf_ilulist; 7413 clks->drain_start = ddi_get_lbolt(); 7414 } 7415 7416 stmf_check_freetask(); 7417 if (!stmf_state.stmf_svc_ilu_draining) { 7418 /* we finished a complete round */ 7419 clks->drain_next = 7420 clks->drain_start + drv_usectohz(10*1000*1000); 7421 } else { 7422 /* we still have some ilu items to check */ 7423 clks->drain_next = 7424 ddi_get_lbolt() + drv_usectohz(1*1000*1000); 7425 } 7426 7427 if (stmf_state.stmf_svc_active) 7428 return; 7429 } 7430 7431 /* Check if we need to run worker_mgmt */ 7432 if (ddi_get_lbolt() > clks->worker_delay) { 7433 stmf_worker_mgmt(); 7434 clks->worker_delay = ddi_get_lbolt() + 7435 stmf_worker_mgmt_delay; 7436 } 7437 7438 /* Check if any active session got its 1st LUN */ 7439 if (stmf_state.stmf_process_initial_luns) { 7440 int stmf_level = 0; 7441 int port_level; 7442 7443 for (ilport = stmf_state.stmf_ilportlist; ilport; 7444 ilport = next_ilport) { 7445 int ilport_lock_held; 7446 next_ilport = ilport->ilport_next; 7447 7448 if ((ilport->ilport_flags & 7449 ILPORT_SS_GOT_INITIAL_LUNS) == 0) 7450 continue; 7451 7452 port_level = 0; 7453 rw_enter(&ilport->ilport_lock, RW_READER); 7454 ilport_lock_held = 1; 7455 7456 for (iss = ilport->ilport_ss_list; iss; 7457 iss = iss->iss_next) { 7458 if ((iss->iss_flags & 7459 ISS_GOT_INITIAL_LUNS) == 0) 7460 continue; 7461 7462 port_level++; 7463 stmf_level++; 7464 atomic_and_32(&iss->iss_flags, 7465 ~ISS_GOT_INITIAL_LUNS); 7466 atomic_or_32(&iss->iss_flags, 7467 ISS_EVENT_ACTIVE); 7468 rw_exit(&ilport->ilport_lock); 7469 ilport_lock_held = 0; 7470 mutex_exit(&stmf_state.stmf_lock); 7471 stmf_generate_lport_event(ilport, 7472 LPORT_EVENT_INITIAL_LUN_MAPPED, 7473 iss->iss_ss, 0); 7474 atomic_and_32(&iss->iss_flags, 7475 ~ISS_EVENT_ACTIVE); 7476 mutex_enter(&stmf_state.stmf_lock); 7477 /* 7478 * scan all the ilports again as the 7479 * ilport list might have changed. 7480 */ 7481 next_ilport = stmf_state.stmf_ilportlist; 7482 break; 7483 } 7484 7485 if (port_level == 0) 7486 atomic_and_32(&ilport->ilport_flags, 7487 ~ILPORT_SS_GOT_INITIAL_LUNS); 7488 /* drop the lock if we are holding it. */ 7489 if (ilport_lock_held == 1) 7490 rw_exit(&ilport->ilport_lock); 7491 7492 /* Max 4 session at a time */ 7493 if (stmf_level >= 4) 7494 break; 7495 } 7496 7497 if (stmf_level == 0) 7498 stmf_state.stmf_process_initial_luns = 0; 7499 } 7500 7501 stmf_state.stmf_svc_flags &= ~STMF_SVC_ACTIVE; 7502 (void) cv_reltimedwait(&stmf_state.stmf_cv, 7503 &stmf_state.stmf_lock, td, TR_CLOCK_TICK); 7504 stmf_state.stmf_svc_flags |= STMF_SVC_ACTIVE; 7505 } 7506 7507 /* 7508 * Waits for ongoing I/O tasks to finish on an LU in preparation for 7509 * the LU's offlining. The LU should already be in an Offlining state 7510 * (otherwise I/O to the LU might never end). There is an additional 7511 * enforcement of this via a deadman timer check. 7512 */ 7513 static void 7514 stmf_wait_ilu_tasks_finish(stmf_i_lu_t *ilu) 7515 { 7516 clock_t start, now, deadline; 7517 7518 start = now = ddi_get_lbolt(); 7519 deadline = start + drv_usectohz(stmf_io_deadman * 1000000llu); 7520 mutex_enter(&ilu->ilu_task_lock); 7521 while (ilu->ilu_ntasks != ilu->ilu_ntasks_free) { 7522 (void) cv_timedwait(&ilu->ilu_offline_pending_cv, 7523 &ilu->ilu_task_lock, deadline); 7524 now = ddi_get_lbolt(); 7525 if (now > deadline) { 7526 if (stmf_io_deadman_enabled) { 7527 cmn_err(CE_PANIC, "stmf_svc: I/O deadman hit " 7528 "on STMF_CMD_LU_OFFLINE after %d seconds", 7529 stmf_io_deadman); 7530 } else { 7531 /* keep on spinning */ 7532 deadline = now + drv_usectohz(stmf_io_deadman * 7533 1000000llu); 7534 } 7535 } 7536 } 7537 mutex_exit(&ilu->ilu_task_lock); 7538 DTRACE_PROBE1(deadman__timeout__wait, clock_t, now - start); 7539 } 7540 7541 void 7542 stmf_svc_queue(int cmd, void *obj, stmf_state_change_info_t *info) 7543 { 7544 stmf_svc_req_t *req; 7545 int s; 7546 7547 ASSERT(!mutex_owned(&stmf_state.stmf_lock)); 7548 s = sizeof (stmf_svc_req_t); 7549 if (info->st_additional_info) { 7550 s += strlen(info->st_additional_info) + 1; 7551 } 7552 req = kmem_zalloc(s, KM_SLEEP); 7553 7554 req->svc_cmd = cmd; 7555 req->svc_obj = obj; 7556 req->svc_info.st_rflags = info->st_rflags; 7557 if (info->st_additional_info) { 7558 req->svc_info.st_additional_info = (char *)(GET_BYTE_OFFSET(req, 7559 sizeof (stmf_svc_req_t))); 7560 (void) strcpy(req->svc_info.st_additional_info, 7561 info->st_additional_info); 7562 } 7563 req->svc_req_alloc_size = s; 7564 req->svc_next = NULL; 7565 7566 mutex_enter(&stmf_state.stmf_lock); 7567 *stmf_state.stmf_svc_tailp = req; 7568 stmf_state.stmf_svc_tailp = &req->svc_next; 7569 if ((stmf_state.stmf_svc_flags & STMF_SVC_ACTIVE) == 0) { 7570 cv_signal(&stmf_state.stmf_cv); 7571 } 7572 mutex_exit(&stmf_state.stmf_lock); 7573 } 7574 7575 static void 7576 stmf_svc_kill_obj_requests(void *obj) 7577 { 7578 stmf_svc_req_t *prev_req = NULL; 7579 stmf_svc_req_t *next_req; 7580 stmf_svc_req_t *req; 7581 7582 ASSERT(mutex_owned(&stmf_state.stmf_lock)); 7583 7584 for (req = stmf_state.stmf_svc_active; req != NULL; req = next_req) { 7585 next_req = req->svc_next; 7586 7587 if (req->svc_obj == obj) { 7588 if (prev_req != NULL) 7589 prev_req->svc_next = next_req; 7590 else 7591 stmf_state.stmf_svc_active = next_req; 7592 7593 if (next_req == NULL) 7594 stmf_state.stmf_svc_tailp = (prev_req != NULL) ? 7595 &prev_req->svc_next : 7596 &stmf_state.stmf_svc_active; 7597 7598 kmem_free(req, req->svc_req_alloc_size); 7599 } else { 7600 prev_req = req; 7601 } 7602 } 7603 } 7604 7605 void 7606 stmf_trace(caddr_t ident, const char *fmt, ...) 7607 { 7608 va_list args; 7609 char tbuf[160]; 7610 int len; 7611 7612 if (!stmf_trace_on) 7613 return; 7614 len = snprintf(tbuf, 158, "%s:%07lu: ", ident ? ident : "", 7615 ddi_get_lbolt()); 7616 va_start(args, fmt); 7617 len += vsnprintf(tbuf + len, 158 - len, fmt, args); 7618 va_end(args); 7619 7620 if (len > 158) { 7621 len = 158; 7622 } 7623 tbuf[len++] = '\n'; 7624 tbuf[len] = 0; 7625 7626 mutex_enter(&trace_buf_lock); 7627 bcopy(tbuf, &stmf_trace_buf[trace_buf_curndx], len+1); 7628 trace_buf_curndx += len; 7629 if (trace_buf_curndx > (trace_buf_size - 320)) 7630 trace_buf_curndx = 0; 7631 mutex_exit(&trace_buf_lock); 7632 } 7633 7634 void 7635 stmf_trace_clear() 7636 { 7637 if (!stmf_trace_on) 7638 return; 7639 mutex_enter(&trace_buf_lock); 7640 trace_buf_curndx = 0; 7641 if (trace_buf_size > 0) 7642 stmf_trace_buf[0] = 0; 7643 mutex_exit(&trace_buf_lock); 7644 } 7645 7646 static void 7647 stmf_abort_task_offline(scsi_task_t *task, int offline_lu, char *info) 7648 { 7649 stmf_state_change_info_t change_info; 7650 void *ctl_private; 7651 uint32_t ctl_cmd; 7652 int msg = 0; 7653 7654 stmf_trace("FROM STMF", "abort_task_offline called for %s: %s", 7655 offline_lu ? "LU" : "LPORT", info ? info : "no additional info"); 7656 change_info.st_additional_info = info; 7657 if (offline_lu) { 7658 change_info.st_rflags = STMF_RFLAG_RESET | 7659 STMF_RFLAG_LU_ABORT; 7660 ctl_private = task->task_lu; 7661 if (((stmf_i_lu_t *) 7662 task->task_lu->lu_stmf_private)->ilu_state == 7663 STMF_STATE_ONLINE) { 7664 msg = 1; 7665 } 7666 ctl_cmd = STMF_CMD_LU_OFFLINE; 7667 } else { 7668 change_info.st_rflags = STMF_RFLAG_RESET | 7669 STMF_RFLAG_LPORT_ABORT; 7670 ctl_private = task->task_lport; 7671 if (((stmf_i_local_port_t *) 7672 task->task_lport->lport_stmf_private)->ilport_state == 7673 STMF_STATE_ONLINE) { 7674 msg = 1; 7675 } 7676 ctl_cmd = STMF_CMD_LPORT_OFFLINE; 7677 } 7678 7679 if (msg) { 7680 stmf_trace(0, "Calling stmf_ctl to offline %s : %s", 7681 offline_lu ? "LU" : "LPORT", info ? info : 7682 "<no additional info>"); 7683 } 7684 (void) stmf_ctl(ctl_cmd, ctl_private, &change_info); 7685 } 7686 7687 static char 7688 stmf_ctoi(char c) 7689 { 7690 if ((c >= '0') && (c <= '9')) 7691 c -= '0'; 7692 else if ((c >= 'A') && (c <= 'F')) 7693 c = c - 'A' + 10; 7694 else if ((c >= 'a') && (c <= 'f')) 7695 c = c - 'a' + 10; 7696 else 7697 c = -1; 7698 return (c); 7699 } 7700 7701 /* Convert from Hex value in ASCII format to the equivalent bytes */ 7702 static boolean_t 7703 stmf_base16_str_to_binary(char *c, int dplen, uint8_t *dp) 7704 { 7705 int ii; 7706 7707 for (ii = 0; ii < dplen; ii++) { 7708 char nibble1, nibble2; 7709 char enc_char = *c++; 7710 nibble1 = stmf_ctoi(enc_char); 7711 7712 enc_char = *c++; 7713 nibble2 = stmf_ctoi(enc_char); 7714 if (nibble1 == -1 || nibble2 == -1) 7715 return (B_FALSE); 7716 7717 dp[ii] = (nibble1 << 4) | nibble2; 7718 } 7719 return (B_TRUE); 7720 } 7721 7722 boolean_t 7723 stmf_scsilib_tptid_validate(scsi_transport_id_t *tptid, uint32_t total_sz, 7724 uint16_t *tptid_sz) 7725 { 7726 uint16_t tpd_len = SCSI_TPTID_SIZE; 7727 7728 if (tptid_sz) 7729 *tptid_sz = 0; 7730 if (total_sz < sizeof (scsi_transport_id_t)) 7731 return (B_FALSE); 7732 7733 switch (tptid->protocol_id) { 7734 7735 case PROTOCOL_FIBRE_CHANNEL: 7736 /* FC Transport ID validation checks. SPC3 rev23, Table 284 */ 7737 if (total_sz < tpd_len || tptid->format_code != 0) 7738 return (B_FALSE); 7739 break; 7740 7741 case PROTOCOL_iSCSI: 7742 { 7743 iscsi_transport_id_t *iscsiid; 7744 uint16_t adn_len, name_len; 7745 7746 /* Check for valid format code, SPC3 rev 23 Table 288 */ 7747 if ((total_sz < tpd_len) || 7748 (tptid->format_code != 0 && tptid->format_code != 1)) 7749 return (B_FALSE); 7750 7751 iscsiid = (iscsi_transport_id_t *)tptid; 7752 adn_len = READ_SCSI16(iscsiid->add_len, uint16_t); 7753 tpd_len = sizeof (iscsi_transport_id_t) + adn_len - 1; 7754 7755 /* 7756 * iSCSI Transport ID validation checks. 7757 * As per SPC3 rev 23 Section 7.5.4.6 and Table 289 & Table 290 7758 */ 7759 if (adn_len < 20 || (adn_len % 4 != 0)) 7760 return (B_FALSE); 7761 7762 name_len = strnlen(iscsiid->iscsi_name, adn_len); 7763 if (name_len == 0 || name_len >= adn_len) 7764 return (B_FALSE); 7765 7766 /* If the format_code is 1 check for ISID seperator */ 7767 if ((tptid->format_code == 1) && (strstr(iscsiid->iscsi_name, 7768 SCSI_TPTID_ISCSI_ISID_SEPERATOR) == NULL)) 7769 return (B_FALSE); 7770 7771 } 7772 break; 7773 7774 case PROTOCOL_SRP: 7775 /* SRP Transport ID validation checks. SPC3 rev23, Table 287 */ 7776 if (total_sz < tpd_len || tptid->format_code != 0) 7777 return (B_FALSE); 7778 break; 7779 7780 case PROTOCOL_PARALLEL_SCSI: 7781 case PROTOCOL_SSA: 7782 case PROTOCOL_IEEE_1394: 7783 case PROTOCOL_SAS: 7784 case PROTOCOL_ADT: 7785 case PROTOCOL_ATAPI: 7786 default: 7787 { 7788 stmf_dflt_scsi_tptid_t *dflttpd; 7789 7790 tpd_len = sizeof (stmf_dflt_scsi_tptid_t); 7791 if (total_sz < tpd_len) 7792 return (B_FALSE); 7793 dflttpd = (stmf_dflt_scsi_tptid_t *)tptid; 7794 tpd_len = tpd_len + SCSI_READ16(&dflttpd->ident_len) - 1; 7795 if (total_sz < tpd_len) 7796 return (B_FALSE); 7797 } 7798 break; 7799 } 7800 if (tptid_sz) 7801 *tptid_sz = tpd_len; 7802 return (B_TRUE); 7803 } 7804 7805 boolean_t 7806 stmf_scsilib_tptid_compare(scsi_transport_id_t *tpd1, 7807 scsi_transport_id_t *tpd2) 7808 { 7809 if ((tpd1->protocol_id != tpd2->protocol_id) || 7810 (tpd1->format_code != tpd2->format_code)) 7811 return (B_FALSE); 7812 7813 switch (tpd1->protocol_id) { 7814 7815 case PROTOCOL_iSCSI: 7816 { 7817 iscsi_transport_id_t *iscsitpd1, *iscsitpd2; 7818 uint16_t len; 7819 7820 iscsitpd1 = (iscsi_transport_id_t *)tpd1; 7821 iscsitpd2 = (iscsi_transport_id_t *)tpd2; 7822 len = SCSI_READ16(&iscsitpd1->add_len); 7823 if ((memcmp(iscsitpd1->add_len, iscsitpd2->add_len, 2) != 0) || 7824 (memcmp(iscsitpd1->iscsi_name, iscsitpd2->iscsi_name, len) 7825 != 0)) 7826 return (B_FALSE); 7827 } 7828 break; 7829 7830 case PROTOCOL_SRP: 7831 { 7832 scsi_srp_transport_id_t *srptpd1, *srptpd2; 7833 7834 srptpd1 = (scsi_srp_transport_id_t *)tpd1; 7835 srptpd2 = (scsi_srp_transport_id_t *)tpd2; 7836 if (memcmp(srptpd1->srp_name, srptpd2->srp_name, 7837 sizeof (srptpd1->srp_name)) != 0) 7838 return (B_FALSE); 7839 } 7840 break; 7841 7842 case PROTOCOL_FIBRE_CHANNEL: 7843 { 7844 scsi_fc_transport_id_t *fctpd1, *fctpd2; 7845 7846 fctpd1 = (scsi_fc_transport_id_t *)tpd1; 7847 fctpd2 = (scsi_fc_transport_id_t *)tpd2; 7848 if (memcmp(fctpd1->port_name, fctpd2->port_name, 7849 sizeof (fctpd1->port_name)) != 0) 7850 return (B_FALSE); 7851 } 7852 break; 7853 7854 case PROTOCOL_PARALLEL_SCSI: 7855 case PROTOCOL_SSA: 7856 case PROTOCOL_IEEE_1394: 7857 case PROTOCOL_SAS: 7858 case PROTOCOL_ADT: 7859 case PROTOCOL_ATAPI: 7860 default: 7861 { 7862 stmf_dflt_scsi_tptid_t *dflt1, *dflt2; 7863 uint16_t len; 7864 7865 dflt1 = (stmf_dflt_scsi_tptid_t *)tpd1; 7866 dflt2 = (stmf_dflt_scsi_tptid_t *)tpd2; 7867 len = SCSI_READ16(&dflt1->ident_len); 7868 if ((memcmp(dflt1->ident_len, dflt2->ident_len, 2) != 0) || 7869 (memcmp(dflt1->ident, dflt2->ident, len) != 0)) 7870 return (B_FALSE); 7871 } 7872 break; 7873 } 7874 return (B_TRUE); 7875 } 7876 7877 /* 7878 * Changes devid_desc to corresponding TransportID format 7879 * Returns :- pointer to stmf_remote_port_t 7880 * Note :- Allocates continous memory for stmf_remote_port_t and TransportID, 7881 * This memory need to be freed when this remote_port is no longer 7882 * used. 7883 */ 7884 stmf_remote_port_t * 7885 stmf_scsilib_devid_to_remote_port(scsi_devid_desc_t *devid) 7886 { 7887 struct scsi_fc_transport_id *fc_tpd; 7888 struct iscsi_transport_id *iscsi_tpd; 7889 struct scsi_srp_transport_id *srp_tpd; 7890 struct stmf_dflt_scsi_tptid *dflt_tpd; 7891 uint16_t ident_len, sz = 0; 7892 stmf_remote_port_t *rpt = NULL; 7893 7894 ident_len = devid->ident_length; 7895 ASSERT(ident_len); 7896 switch (devid->protocol_id) { 7897 case PROTOCOL_FIBRE_CHANNEL: 7898 sz = sizeof (scsi_fc_transport_id_t); 7899 rpt = stmf_remote_port_alloc(sz); 7900 rpt->rport_tptid->format_code = 0; 7901 rpt->rport_tptid->protocol_id = devid->protocol_id; 7902 fc_tpd = (scsi_fc_transport_id_t *)rpt->rport_tptid; 7903 /* 7904 * convert from "wwn.xxxxxxxxxxxxxxxx" to 8-byte binary 7905 * skip first 4 byte for "wwn." 7906 */ 7907 ASSERT(strncmp("wwn.", (char *)devid->ident, 4) == 0); 7908 if ((ident_len < SCSI_TPTID_FC_PORT_NAME_SIZE * 2 + 4) || 7909 !stmf_base16_str_to_binary((char *)devid->ident + 4, 7910 SCSI_TPTID_FC_PORT_NAME_SIZE, fc_tpd->port_name)) 7911 goto devid_to_remote_port_fail; 7912 break; 7913 7914 case PROTOCOL_iSCSI: 7915 sz = ALIGNED_TO_8BYTE_BOUNDARY(sizeof (iscsi_transport_id_t) + 7916 ident_len - 1); 7917 rpt = stmf_remote_port_alloc(sz); 7918 rpt->rport_tptid->format_code = 0; 7919 rpt->rport_tptid->protocol_id = devid->protocol_id; 7920 iscsi_tpd = (iscsi_transport_id_t *)rpt->rport_tptid; 7921 SCSI_WRITE16(iscsi_tpd->add_len, ident_len); 7922 (void) memcpy(iscsi_tpd->iscsi_name, devid->ident, ident_len); 7923 break; 7924 7925 case PROTOCOL_SRP: 7926 sz = sizeof (scsi_srp_transport_id_t); 7927 rpt = stmf_remote_port_alloc(sz); 7928 rpt->rport_tptid->format_code = 0; 7929 rpt->rport_tptid->protocol_id = devid->protocol_id; 7930 srp_tpd = (scsi_srp_transport_id_t *)rpt->rport_tptid; 7931 /* 7932 * convert from "eui.xxxxxxxxxxxxxxx" to 8-byte binary 7933 * skip first 4 byte for "eui." 7934 * Assume 8-byte initiator-extension part of srp_name is NOT 7935 * stored in devid and hence will be set as zero 7936 */ 7937 ASSERT(strncmp("eui.", (char *)devid->ident, 4) == 0); 7938 if ((ident_len < (SCSI_TPTID_SRP_PORT_NAME_LEN - 8) * 2 + 4) || 7939 !stmf_base16_str_to_binary((char *)devid->ident+4, 7940 SCSI_TPTID_SRP_PORT_NAME_LEN, srp_tpd->srp_name)) 7941 goto devid_to_remote_port_fail; 7942 break; 7943 7944 case PROTOCOL_PARALLEL_SCSI: 7945 case PROTOCOL_SSA: 7946 case PROTOCOL_IEEE_1394: 7947 case PROTOCOL_SAS: 7948 case PROTOCOL_ADT: 7949 case PROTOCOL_ATAPI: 7950 default : 7951 ident_len = devid->ident_length; 7952 sz = ALIGNED_TO_8BYTE_BOUNDARY(sizeof (stmf_dflt_scsi_tptid_t) + 7953 ident_len - 1); 7954 rpt = stmf_remote_port_alloc(sz); 7955 rpt->rport_tptid->format_code = 0; 7956 rpt->rport_tptid->protocol_id = devid->protocol_id; 7957 dflt_tpd = (stmf_dflt_scsi_tptid_t *)rpt->rport_tptid; 7958 SCSI_WRITE16(dflt_tpd->ident_len, ident_len); 7959 (void) memcpy(dflt_tpd->ident, devid->ident, ident_len); 7960 break; 7961 } 7962 return (rpt); 7963 7964 devid_to_remote_port_fail: 7965 stmf_remote_port_free(rpt); 7966 return (NULL); 7967 7968 } 7969 7970 stmf_remote_port_t * 7971 stmf_remote_port_alloc(uint16_t tptid_sz) { 7972 stmf_remote_port_t *rpt; 7973 rpt = (stmf_remote_port_t *)kmem_zalloc( 7974 sizeof (stmf_remote_port_t) + tptid_sz, KM_SLEEP); 7975 rpt->rport_tptid_sz = tptid_sz; 7976 rpt->rport_tptid = (scsi_transport_id_t *)(rpt + 1); 7977 return (rpt); 7978 } 7979 7980 void 7981 stmf_remote_port_free(stmf_remote_port_t *rpt) 7982 { 7983 /* 7984 * Note: stmf_scsilib_devid_to_remote_port() function allocates 7985 * remote port structures for all transports in the same way, So 7986 * it is safe to deallocate it in a protocol independent manner. 7987 * If any of the allocation method changes, corresponding changes 7988 * need to be made here too. 7989 */ 7990 kmem_free(rpt, sizeof (stmf_remote_port_t) + rpt->rport_tptid_sz); 7991 } 7992