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, STMF_KSTAT_LU_SZ); 3184 kstat_delete(ilu->ilu_kstat_info); 3185 } 3186 if (ilu->ilu_kstat_io) { 3187 kstat_delete(ilu->ilu_kstat_io); 3188 mutex_destroy(&ilu->ilu_kstat_lock); 3189 } 3190 cv_destroy(&ilu->ilu_offline_pending_cv); 3191 mutex_exit(&stmf_state.stmf_lock); 3192 return (STMF_SUCCESS); 3193 } 3194 3195 void 3196 stmf_set_port_standby(stmf_local_port_t *lport, uint16_t rtpid) 3197 { 3198 stmf_i_local_port_t *ilport = 3199 (stmf_i_local_port_t *)lport->lport_stmf_private; 3200 ilport->ilport_rtpid = rtpid; 3201 ilport->ilport_standby = 1; 3202 } 3203 3204 void 3205 stmf_set_port_alua(stmf_local_port_t *lport) 3206 { 3207 stmf_i_local_port_t *ilport = 3208 (stmf_i_local_port_t *)lport->lport_stmf_private; 3209 ilport->ilport_alua = 1; 3210 } 3211 3212 stmf_status_t 3213 stmf_register_local_port(stmf_local_port_t *lport) 3214 { 3215 stmf_i_local_port_t *ilport; 3216 stmf_state_change_info_t ssci; 3217 int start_workers = 0; 3218 3219 mutex_enter(&stmf_state.stmf_lock); 3220 if (stmf_state.stmf_inventory_locked) { 3221 mutex_exit(&stmf_state.stmf_lock); 3222 return (STMF_BUSY); 3223 } 3224 ilport = (stmf_i_local_port_t *)lport->lport_stmf_private; 3225 rw_init(&ilport->ilport_lock, NULL, RW_DRIVER, NULL); 3226 3227 ilport->ilport_instance = 3228 id_alloc_nosleep(stmf_state.stmf_ilport_inst_space); 3229 if (ilport->ilport_instance == -1) { 3230 mutex_exit(&stmf_state.stmf_lock); 3231 return (STMF_FAILURE); 3232 } 3233 ilport->ilport_next = stmf_state.stmf_ilportlist; 3234 ilport->ilport_prev = NULL; 3235 if (ilport->ilport_next) 3236 ilport->ilport_next->ilport_prev = ilport; 3237 stmf_state.stmf_ilportlist = ilport; 3238 stmf_state.stmf_nlports++; 3239 if (lport->lport_pp) { 3240 ((stmf_i_port_provider_t *) 3241 (lport->lport_pp->pp_stmf_private))->ipp_npps++; 3242 } 3243 ilport->ilport_tg = 3244 stmf_lookup_group_for_target(lport->lport_id->ident, 3245 lport->lport_id->ident_length); 3246 3247 /* 3248 * rtpid will/must be set if this is a standby port 3249 * only register ports that are not standby (proxy) ports 3250 * and ports that are alua participants (ilport_alua == 1) 3251 */ 3252 if (ilport->ilport_standby == 0) { 3253 ilport->ilport_rtpid = atomic_inc_16_nv(&stmf_rtpid_counter); 3254 } 3255 3256 if (stmf_state.stmf_alua_state == 1 && 3257 ilport->ilport_standby == 0 && 3258 ilport->ilport_alua == 1) { 3259 stmf_ic_msg_t *ic_reg_port; 3260 stmf_ic_msg_status_t ic_ret; 3261 stmf_local_port_t *lport; 3262 lport = ilport->ilport_lport; 3263 ic_reg_port = ic_reg_port_msg_alloc( 3264 lport->lport_id, ilport->ilport_rtpid, 3265 0, NULL, stmf_proxy_msg_id); 3266 if (ic_reg_port) { 3267 ic_ret = ic_tx_msg(ic_reg_port); 3268 if (ic_ret == STMF_IC_MSG_SUCCESS) { 3269 ilport->ilport_reg_msgid = stmf_proxy_msg_id++; 3270 } else { 3271 cmn_err(CE_WARN, "error on port registration " 3272 "port - %s", ilport->ilport_kstat_tgt_name); 3273 } 3274 } 3275 } 3276 STMF_EVENT_ALLOC_HANDLE(ilport->ilport_event_hdl); 3277 stmf_create_kstat_lport(ilport); 3278 if (stmf_workers_state == STMF_WORKERS_DISABLED) { 3279 stmf_workers_state = STMF_WORKERS_ENABLING; 3280 start_workers = 1; 3281 } 3282 mutex_exit(&stmf_state.stmf_lock); 3283 3284 if (start_workers) 3285 stmf_worker_init(); 3286 3287 /* the default state of LPORT */ 3288 3289 if (stmf_state.stmf_default_lport_state == STMF_STATE_OFFLINE) { 3290 ilport->ilport_prev_state = STMF_STATE_OFFLINE; 3291 } else { 3292 ilport->ilport_prev_state = STMF_STATE_ONLINE; 3293 if (stmf_state.stmf_service_running) { 3294 ssci.st_rflags = 0; 3295 ssci.st_additional_info = NULL; 3296 (void) stmf_ctl(STMF_CMD_LPORT_ONLINE, lport, &ssci); 3297 } 3298 } 3299 3300 /* XXX: Generate event */ 3301 return (STMF_SUCCESS); 3302 } 3303 3304 stmf_status_t 3305 stmf_deregister_local_port(stmf_local_port_t *lport) 3306 { 3307 stmf_i_local_port_t *ilport; 3308 3309 mutex_enter(&stmf_state.stmf_lock); 3310 if (stmf_state.stmf_inventory_locked) { 3311 mutex_exit(&stmf_state.stmf_lock); 3312 return (STMF_BUSY); 3313 } 3314 3315 /* dequeue all object requests from active queue */ 3316 stmf_svc_kill_obj_requests(lport); 3317 3318 ilport = (stmf_i_local_port_t *)lport->lport_stmf_private; 3319 3320 /* 3321 * deregister ports that are not standby (proxy) 3322 */ 3323 if (stmf_state.stmf_alua_state == 1 && 3324 ilport->ilport_standby == 0 && 3325 ilport->ilport_alua == 1) { 3326 stmf_ic_msg_t *ic_dereg_port; 3327 stmf_ic_msg_status_t ic_ret; 3328 ic_dereg_port = ic_dereg_port_msg_alloc( 3329 lport->lport_id, 0, NULL, stmf_proxy_msg_id); 3330 if (ic_dereg_port) { 3331 ic_ret = ic_tx_msg(ic_dereg_port); 3332 if (ic_ret == STMF_IC_MSG_SUCCESS) { 3333 stmf_proxy_msg_id++; 3334 } 3335 } 3336 } 3337 3338 if (ilport->ilport_nsessions == 0) { 3339 if (ilport->ilport_next) 3340 ilport->ilport_next->ilport_prev = ilport->ilport_prev; 3341 if (ilport->ilport_prev) 3342 ilport->ilport_prev->ilport_next = ilport->ilport_next; 3343 else 3344 stmf_state.stmf_ilportlist = ilport->ilport_next; 3345 id_free(stmf_state.stmf_ilport_inst_space, 3346 ilport->ilport_instance); 3347 rw_destroy(&ilport->ilport_lock); 3348 stmf_state.stmf_nlports--; 3349 if (lport->lport_pp) { 3350 ((stmf_i_port_provider_t *) 3351 (lport->lport_pp->pp_stmf_private))->ipp_npps--; 3352 } 3353 ilport->ilport_tg = NULL; 3354 STMF_EVENT_FREE_HANDLE(ilport->ilport_event_hdl); 3355 } else { 3356 mutex_exit(&stmf_state.stmf_lock); 3357 return (STMF_BUSY); 3358 } 3359 if (ilport->ilport_kstat_info) { 3360 kmem_free(ilport->ilport_kstat_info->ks_data, 3361 STMF_KSTAT_TGT_SZ); 3362 kstat_delete(ilport->ilport_kstat_info); 3363 } 3364 if (ilport->ilport_kstat_io) { 3365 kstat_delete(ilport->ilport_kstat_io); 3366 mutex_destroy(&ilport->ilport_kstat_lock); 3367 } 3368 mutex_exit(&stmf_state.stmf_lock); 3369 return (STMF_SUCCESS); 3370 } 3371 3372 /* 3373 * Rport id/instance mappings remain valid until STMF is unloaded 3374 */ 3375 static int 3376 stmf_irport_compare(const void *void_irport1, const void *void_irport2) 3377 { 3378 const stmf_i_remote_port_t *irport1 = void_irport1; 3379 const stmf_i_remote_port_t *irport2 = void_irport2; 3380 int result; 3381 3382 /* Sort by code set then ident */ 3383 if (irport1->irport_id->code_set < 3384 irport2->irport_id->code_set) { 3385 return (-1); 3386 } else if (irport1->irport_id->code_set > 3387 irport2->irport_id->code_set) { 3388 return (1); 3389 } 3390 3391 /* Next by ident length */ 3392 if (irport1->irport_id->ident_length < 3393 irport2->irport_id->ident_length) { 3394 return (-1); 3395 } else if (irport1->irport_id->ident_length > 3396 irport2->irport_id->ident_length) { 3397 return (1); 3398 } 3399 3400 /* Code set and ident length both match, now compare idents */ 3401 result = memcmp(irport1->irport_id->ident, 3402 irport2->irport_id->ident, 3403 irport1->irport_id->ident_length); 3404 3405 if (result < 0) { 3406 return (-1); 3407 } else if (result > 0) { 3408 return (1); 3409 } 3410 3411 return (0); 3412 } 3413 3414 static stmf_i_remote_port_t * 3415 stmf_irport_create(scsi_devid_desc_t *rport_devid) 3416 { 3417 int alloc_len; 3418 stmf_i_remote_port_t *irport; 3419 3420 /* 3421 * Lookup will bump the refcnt if there's an existing rport 3422 * context for this identifier. 3423 */ 3424 ASSERT(mutex_owned(&stmf_state.stmf_lock)); 3425 3426 alloc_len = sizeof (*irport) + sizeof (scsi_devid_desc_t) + 3427 rport_devid->ident_length - 1; 3428 irport = kmem_zalloc(alloc_len, KM_NOSLEEP); 3429 if (irport == NULL) { 3430 return (NULL); 3431 } 3432 3433 irport->irport_instance = 3434 id_alloc_nosleep(stmf_state.stmf_irport_inst_space); 3435 if (irport->irport_instance == -1) { 3436 kmem_free(irport, alloc_len); 3437 return (NULL); 3438 } 3439 3440 irport->irport_id = 3441 (struct scsi_devid_desc *)(irport + 1); /* Ptr. Arith. */ 3442 bcopy(rport_devid, irport->irport_id, 3443 sizeof (scsi_devid_desc_t) + rport_devid->ident_length - 1); 3444 irport->irport_refcnt = 1; 3445 mutex_init(&irport->irport_mutex, NULL, MUTEX_DEFAULT, NULL); 3446 3447 return (irport); 3448 } 3449 3450 static void 3451 stmf_irport_destroy(stmf_i_remote_port_t *irport) 3452 { 3453 id_free(stmf_state.stmf_irport_inst_space, irport->irport_instance); 3454 mutex_destroy(&irport->irport_mutex); 3455 kmem_free(irport, sizeof (*irport) + sizeof (scsi_devid_desc_t) + 3456 irport->irport_id->ident_length - 1); 3457 } 3458 3459 static stmf_i_remote_port_t * 3460 stmf_irport_register(scsi_devid_desc_t *rport_devid) 3461 { 3462 stmf_i_remote_port_t *irport; 3463 3464 mutex_enter(&stmf_state.stmf_lock); 3465 3466 /* 3467 * Lookup will bump the refcnt if there's an existing rport 3468 * context for this identifier. 3469 */ 3470 if ((irport = stmf_irport_lookup_locked(rport_devid)) != NULL) { 3471 mutex_exit(&stmf_state.stmf_lock); 3472 return (irport); 3473 } 3474 3475 irport = stmf_irport_create(rport_devid); 3476 if (irport == NULL) { 3477 mutex_exit(&stmf_state.stmf_lock); 3478 return (NULL); 3479 } 3480 3481 avl_add(&stmf_state.stmf_irportlist, irport); 3482 mutex_exit(&stmf_state.stmf_lock); 3483 3484 return (irport); 3485 } 3486 3487 static stmf_i_remote_port_t * 3488 stmf_irport_lookup_locked(scsi_devid_desc_t *rport_devid) 3489 { 3490 stmf_i_remote_port_t *irport; 3491 stmf_i_remote_port_t tmp_irport; 3492 3493 ASSERT(mutex_owned(&stmf_state.stmf_lock)); 3494 tmp_irport.irport_id = rport_devid; 3495 irport = avl_find(&stmf_state.stmf_irportlist, &tmp_irport, NULL); 3496 if (irport != NULL) { 3497 mutex_enter(&irport->irport_mutex); 3498 irport->irport_refcnt++; 3499 mutex_exit(&irport->irport_mutex); 3500 } 3501 3502 return (irport); 3503 } 3504 3505 static void 3506 stmf_irport_deregister(stmf_i_remote_port_t *irport) 3507 { 3508 /* 3509 * If we were actually going to remove unreferenced remote ports 3510 * we would want to acquire stmf_state.stmf_lock before getting 3511 * the irport mutex. 3512 * 3513 * Instead we're just going to leave it there even if unreferenced. 3514 */ 3515 mutex_enter(&irport->irport_mutex); 3516 irport->irport_refcnt--; 3517 mutex_exit(&irport->irport_mutex); 3518 } 3519 3520 /* 3521 * Port provider has to make sure that register/deregister session and 3522 * port are serialized calls. 3523 */ 3524 stmf_status_t 3525 stmf_register_scsi_session(stmf_local_port_t *lport, stmf_scsi_session_t *ss) 3526 { 3527 stmf_i_scsi_session_t *iss; 3528 stmf_i_local_port_t *ilport = (stmf_i_local_port_t *) 3529 lport->lport_stmf_private; 3530 uint8_t lun[8]; 3531 3532 /* 3533 * Port state has to be online to register a scsi session. It is 3534 * possible that we started an offline operation and a new SCSI 3535 * session started at the same time (in that case also we are going 3536 * to fail the registeration). But any other state is simply 3537 * a bad port provider implementation. 3538 */ 3539 if (ilport->ilport_state != STMF_STATE_ONLINE) { 3540 if (ilport->ilport_state != STMF_STATE_OFFLINING) { 3541 stmf_trace(lport->lport_alias, "Port is trying to " 3542 "register a session while the state is neither " 3543 "online nor offlining"); 3544 } 3545 return (STMF_FAILURE); 3546 } 3547 bzero(lun, 8); 3548 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private; 3549 if ((iss->iss_irport = stmf_irport_register(ss->ss_rport_id)) == NULL) { 3550 stmf_trace(lport->lport_alias, "Could not register " 3551 "remote port during session registration"); 3552 return (STMF_FAILURE); 3553 } 3554 3555 iss->iss_flags |= ISS_BEING_CREATED; 3556 3557 if (ss->ss_rport == NULL) { 3558 iss->iss_flags |= ISS_NULL_TPTID; 3559 ss->ss_rport = stmf_scsilib_devid_to_remote_port( 3560 ss->ss_rport_id); 3561 if (ss->ss_rport == NULL) { 3562 iss->iss_flags &= ~(ISS_NULL_TPTID | ISS_BEING_CREATED); 3563 stmf_trace(lport->lport_alias, "Device id to " 3564 "remote port conversion failed"); 3565 return (STMF_FAILURE); 3566 } 3567 } else { 3568 if (!stmf_scsilib_tptid_validate(ss->ss_rport->rport_tptid, 3569 ss->ss_rport->rport_tptid_sz, NULL)) { 3570 iss->iss_flags &= ~ISS_BEING_CREATED; 3571 stmf_trace(lport->lport_alias, "Remote port " 3572 "transport id validation failed"); 3573 return (STMF_FAILURE); 3574 } 3575 } 3576 3577 /* sessions use the ilport_lock. No separate lock is required */ 3578 iss->iss_lockp = &ilport->ilport_lock; 3579 3580 if (iss->iss_sm != NULL) 3581 cmn_err(CE_PANIC, "create lun map called with non NULL map"); 3582 iss->iss_sm = (stmf_lun_map_t *)kmem_zalloc(sizeof (stmf_lun_map_t), 3583 KM_SLEEP); 3584 3585 mutex_enter(&stmf_state.stmf_lock); 3586 rw_enter(&ilport->ilport_lock, RW_WRITER); 3587 (void) stmf_session_create_lun_map(ilport, iss); 3588 ilport->ilport_nsessions++; 3589 iss->iss_next = ilport->ilport_ss_list; 3590 ilport->ilport_ss_list = iss; 3591 rw_exit(&ilport->ilport_lock); 3592 mutex_exit(&stmf_state.stmf_lock); 3593 3594 iss->iss_creation_time = ddi_get_time(); 3595 ss->ss_session_id = atomic_inc_64_nv(&stmf_session_counter); 3596 iss->iss_flags &= ~ISS_BEING_CREATED; 3597 /* XXX should we remove ISS_LUN_INVENTORY_CHANGED on new session? */ 3598 iss->iss_flags &= ~ISS_LUN_INVENTORY_CHANGED; 3599 DTRACE_PROBE2(session__online, stmf_local_port_t *, lport, 3600 stmf_scsi_session_t *, ss); 3601 return (STMF_SUCCESS); 3602 } 3603 3604 void 3605 stmf_deregister_scsi_session(stmf_local_port_t *lport, stmf_scsi_session_t *ss) 3606 { 3607 stmf_i_local_port_t *ilport = (stmf_i_local_port_t *) 3608 lport->lport_stmf_private; 3609 stmf_i_scsi_session_t *iss, **ppss; 3610 int found = 0; 3611 stmf_ic_msg_t *ic_session_dereg; 3612 stmf_status_t ic_ret = STMF_FAILURE; 3613 3614 DTRACE_PROBE2(session__offline, stmf_local_port_t *, lport, 3615 stmf_scsi_session_t *, ss); 3616 3617 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private; 3618 if (ss->ss_rport_alias) { 3619 ss->ss_rport_alias = NULL; 3620 } 3621 3622 try_dereg_ss_again: 3623 mutex_enter(&stmf_state.stmf_lock); 3624 atomic_and_32(&iss->iss_flags, 3625 ~(ISS_LUN_INVENTORY_CHANGED | ISS_GOT_INITIAL_LUNS)); 3626 if (iss->iss_flags & ISS_EVENT_ACTIVE) { 3627 mutex_exit(&stmf_state.stmf_lock); 3628 delay(1); 3629 goto try_dereg_ss_again; 3630 } 3631 3632 /* dereg proxy session if not standby port */ 3633 if (stmf_state.stmf_alua_state == 1 && 3634 ilport->ilport_standby == 0 && 3635 ilport->ilport_alua == 1) { 3636 ic_session_dereg = ic_session_dereg_msg_alloc( 3637 ss, stmf_proxy_msg_id); 3638 if (ic_session_dereg) { 3639 ic_ret = ic_tx_msg(ic_session_dereg); 3640 if (ic_ret == STMF_IC_MSG_SUCCESS) { 3641 stmf_proxy_msg_id++; 3642 } 3643 } 3644 } 3645 3646 rw_enter(&ilport->ilport_lock, RW_WRITER); 3647 for (ppss = &ilport->ilport_ss_list; *ppss != NULL; 3648 ppss = &((*ppss)->iss_next)) { 3649 if (iss == (*ppss)) { 3650 *ppss = (*ppss)->iss_next; 3651 found = 1; 3652 break; 3653 } 3654 } 3655 if (!found) { 3656 cmn_err(CE_PANIC, "Deregister session called for non existent" 3657 " session"); 3658 } 3659 ilport->ilport_nsessions--; 3660 3661 stmf_irport_deregister(iss->iss_irport); 3662 (void) stmf_session_destroy_lun_map(ilport, iss); 3663 rw_exit(&ilport->ilport_lock); 3664 mutex_exit(&stmf_state.stmf_lock); 3665 3666 if (iss->iss_flags & ISS_NULL_TPTID) { 3667 stmf_remote_port_free(ss->ss_rport); 3668 } 3669 } 3670 3671 stmf_i_scsi_session_t * 3672 stmf_session_id_to_issptr(uint64_t session_id, int stay_locked) 3673 { 3674 stmf_i_local_port_t *ilport; 3675 stmf_i_scsi_session_t *iss; 3676 3677 mutex_enter(&stmf_state.stmf_lock); 3678 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL; 3679 ilport = ilport->ilport_next) { 3680 rw_enter(&ilport->ilport_lock, RW_WRITER); 3681 for (iss = ilport->ilport_ss_list; iss != NULL; 3682 iss = iss->iss_next) { 3683 if (iss->iss_ss->ss_session_id == session_id) { 3684 if (!stay_locked) 3685 rw_exit(&ilport->ilport_lock); 3686 mutex_exit(&stmf_state.stmf_lock); 3687 return (iss); 3688 } 3689 } 3690 rw_exit(&ilport->ilport_lock); 3691 } 3692 mutex_exit(&stmf_state.stmf_lock); 3693 return (NULL); 3694 } 3695 3696 void 3697 stmf_release_itl_handle(stmf_lu_t *lu, stmf_itl_data_t *itl) 3698 { 3699 stmf_itl_data_t **itlpp; 3700 stmf_i_lu_t *ilu; 3701 3702 ASSERT(itl->itl_flags & STMF_ITL_BEING_TERMINATED); 3703 3704 ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 3705 mutex_enter(&ilu->ilu_task_lock); 3706 for (itlpp = &ilu->ilu_itl_list; (*itlpp) != NULL; 3707 itlpp = &(*itlpp)->itl_next) { 3708 if ((*itlpp) == itl) 3709 break; 3710 } 3711 ASSERT((*itlpp) != NULL); 3712 *itlpp = itl->itl_next; 3713 mutex_exit(&ilu->ilu_task_lock); 3714 lu->lu_abort(lu, STMF_LU_ITL_HANDLE_REMOVED, itl->itl_handle, 3715 (uint32_t)itl->itl_hdlrm_reason); 3716 3717 kmem_free(itl, sizeof (*itl)); 3718 } 3719 3720 stmf_status_t 3721 stmf_register_itl_handle(stmf_lu_t *lu, uint8_t *lun, 3722 stmf_scsi_session_t *ss, uint64_t session_id, void *itl_handle) 3723 { 3724 stmf_itl_data_t *itl; 3725 stmf_i_scsi_session_t *iss; 3726 stmf_lun_map_ent_t *lun_map_ent; 3727 stmf_i_lu_t *ilu; 3728 uint16_t n; 3729 3730 ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 3731 if (ss == NULL) { 3732 iss = stmf_session_id_to_issptr(session_id, 1); 3733 if (iss == NULL) 3734 return (STMF_NOT_FOUND); 3735 } else { 3736 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private; 3737 } 3738 3739 mutex_enter(&stmf_state.stmf_lock); 3740 rw_enter(iss->iss_lockp, RW_WRITER); 3741 n = ((uint16_t)lun[1] | (((uint16_t)(lun[0] & 0x3F)) << 8)); 3742 lun_map_ent = (stmf_lun_map_ent_t *) 3743 stmf_get_ent_from_map(iss->iss_sm, n); 3744 if ((lun_map_ent == NULL) || (lun_map_ent->ent_lu != lu)) { 3745 rw_exit(iss->iss_lockp); 3746 mutex_exit(&stmf_state.stmf_lock); 3747 return (STMF_NOT_FOUND); 3748 } 3749 if (lun_map_ent->ent_itl_datap != NULL) { 3750 rw_exit(iss->iss_lockp); 3751 mutex_exit(&stmf_state.stmf_lock); 3752 return (STMF_ALREADY); 3753 } 3754 3755 itl = (stmf_itl_data_t *)kmem_zalloc(sizeof (*itl), KM_NOSLEEP); 3756 if (itl == NULL) { 3757 rw_exit(iss->iss_lockp); 3758 mutex_exit(&stmf_state.stmf_lock); 3759 return (STMF_ALLOC_FAILURE); 3760 } 3761 3762 itl->itl_ilu = ilu; 3763 itl->itl_session = iss; 3764 itl->itl_counter = 1; 3765 itl->itl_lun = n; 3766 itl->itl_handle = itl_handle; 3767 3768 mutex_enter(&ilu->ilu_task_lock); 3769 itl->itl_next = ilu->ilu_itl_list; 3770 ilu->ilu_itl_list = itl; 3771 mutex_exit(&ilu->ilu_task_lock); 3772 lun_map_ent->ent_itl_datap = itl; 3773 rw_exit(iss->iss_lockp); 3774 mutex_exit(&stmf_state.stmf_lock); 3775 3776 return (STMF_SUCCESS); 3777 } 3778 3779 void 3780 stmf_do_itl_dereg(stmf_lu_t *lu, stmf_itl_data_t *itl, uint8_t hdlrm_reason) 3781 { 3782 uint8_t old, new; 3783 3784 do { 3785 old = new = itl->itl_flags; 3786 if (old & STMF_ITL_BEING_TERMINATED) 3787 return; 3788 new |= STMF_ITL_BEING_TERMINATED; 3789 } while (atomic_cas_8(&itl->itl_flags, old, new) != old); 3790 itl->itl_hdlrm_reason = hdlrm_reason; 3791 3792 ASSERT(itl->itl_counter); 3793 3794 if (atomic_dec_32_nv(&itl->itl_counter)) 3795 return; 3796 3797 stmf_release_itl_handle(lu, itl); 3798 } 3799 3800 stmf_status_t 3801 stmf_deregister_all_lu_itl_handles(stmf_lu_t *lu) 3802 { 3803 stmf_i_lu_t *ilu; 3804 stmf_i_local_port_t *ilport; 3805 stmf_i_scsi_session_t *iss; 3806 stmf_lun_map_t *lm; 3807 stmf_lun_map_ent_t *ent; 3808 uint32_t nmaps, nu; 3809 stmf_itl_data_t **itl_list; 3810 int i; 3811 3812 ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 3813 3814 dereg_itl_start:; 3815 nmaps = ilu->ilu_ref_cnt; 3816 if (nmaps == 0) 3817 return (STMF_NOT_FOUND); 3818 itl_list = (stmf_itl_data_t **)kmem_zalloc( 3819 nmaps * sizeof (stmf_itl_data_t *), KM_SLEEP); 3820 mutex_enter(&stmf_state.stmf_lock); 3821 if (nmaps != ilu->ilu_ref_cnt) { 3822 /* Something changed, start all over */ 3823 mutex_exit(&stmf_state.stmf_lock); 3824 kmem_free(itl_list, nmaps * sizeof (stmf_itl_data_t *)); 3825 goto dereg_itl_start; 3826 } 3827 nu = 0; 3828 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL; 3829 ilport = ilport->ilport_next) { 3830 rw_enter(&ilport->ilport_lock, RW_WRITER); 3831 for (iss = ilport->ilport_ss_list; iss != NULL; 3832 iss = iss->iss_next) { 3833 lm = iss->iss_sm; 3834 if (!lm) 3835 continue; 3836 for (i = 0; i < lm->lm_nentries; i++) { 3837 if (lm->lm_plus[i] == NULL) 3838 continue; 3839 ent = (stmf_lun_map_ent_t *)lm->lm_plus[i]; 3840 if ((ent->ent_lu == lu) && 3841 (ent->ent_itl_datap)) { 3842 itl_list[nu++] = ent->ent_itl_datap; 3843 ent->ent_itl_datap = NULL; 3844 if (nu == nmaps) { 3845 rw_exit(&ilport->ilport_lock); 3846 goto dai_scan_done; 3847 } 3848 } 3849 } /* lun table for a session */ 3850 } /* sessions */ 3851 rw_exit(&ilport->ilport_lock); 3852 } /* ports */ 3853 3854 dai_scan_done: 3855 mutex_exit(&stmf_state.stmf_lock); 3856 3857 for (i = 0; i < nu; i++) { 3858 stmf_do_itl_dereg(lu, itl_list[i], 3859 STMF_ITL_REASON_DEREG_REQUEST); 3860 } 3861 kmem_free(itl_list, nmaps * sizeof (stmf_itl_data_t *)); 3862 3863 return (STMF_SUCCESS); 3864 } 3865 3866 stmf_status_t 3867 stmf_get_itl_handle(stmf_lu_t *lu, uint8_t *lun, stmf_scsi_session_t *ss, 3868 uint64_t session_id, void **itl_handle_retp) 3869 { 3870 stmf_i_scsi_session_t *iss; 3871 stmf_lun_map_ent_t *ent; 3872 stmf_lun_map_t *lm; 3873 stmf_status_t ret; 3874 int i; 3875 uint16_t n; 3876 3877 if (ss == NULL) { 3878 iss = stmf_session_id_to_issptr(session_id, 1); 3879 if (iss == NULL) 3880 return (STMF_NOT_FOUND); 3881 } else { 3882 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private; 3883 rw_enter(iss->iss_lockp, RW_WRITER); 3884 } 3885 3886 ent = NULL; 3887 if (lun == NULL) { 3888 lm = iss->iss_sm; 3889 for (i = 0; i < lm->lm_nentries; i++) { 3890 if (lm->lm_plus[i] == NULL) 3891 continue; 3892 ent = (stmf_lun_map_ent_t *)lm->lm_plus[i]; 3893 if (ent->ent_lu == lu) 3894 break; 3895 } 3896 } else { 3897 n = ((uint16_t)lun[1] | (((uint16_t)(lun[0] & 0x3F)) << 8)); 3898 ent = (stmf_lun_map_ent_t *) 3899 stmf_get_ent_from_map(iss->iss_sm, n); 3900 if (lu && (ent->ent_lu != lu)) 3901 ent = NULL; 3902 } 3903 if (ent && ent->ent_itl_datap) { 3904 *itl_handle_retp = ent->ent_itl_datap->itl_handle; 3905 ret = STMF_SUCCESS; 3906 } else { 3907 ret = STMF_NOT_FOUND; 3908 } 3909 3910 rw_exit(iss->iss_lockp); 3911 return (ret); 3912 } 3913 3914 stmf_data_buf_t * 3915 stmf_alloc_dbuf(scsi_task_t *task, uint32_t size, uint32_t *pminsize, 3916 uint32_t flags) 3917 { 3918 stmf_i_scsi_task_t *itask = 3919 (stmf_i_scsi_task_t *)task->task_stmf_private; 3920 stmf_local_port_t *lport = task->task_lport; 3921 stmf_data_buf_t *dbuf; 3922 uint8_t ndx; 3923 3924 ndx = stmf_first_zero[itask->itask_allocated_buf_map]; 3925 if (ndx == 0xff) 3926 return (NULL); 3927 dbuf = itask->itask_dbufs[ndx] = lport->lport_ds->ds_alloc_data_buf( 3928 task, size, pminsize, flags); 3929 if (dbuf) { 3930 task->task_cur_nbufs++; 3931 itask->itask_allocated_buf_map |= (1 << ndx); 3932 dbuf->db_flags &= ~DB_LPORT_XFER_ACTIVE; 3933 dbuf->db_handle = ndx; 3934 return (dbuf); 3935 } 3936 3937 return (NULL); 3938 } 3939 3940 stmf_status_t 3941 stmf_setup_dbuf(scsi_task_t *task, stmf_data_buf_t *dbuf, uint32_t flags) 3942 { 3943 stmf_i_scsi_task_t *itask = 3944 (stmf_i_scsi_task_t *)task->task_stmf_private; 3945 stmf_local_port_t *lport = task->task_lport; 3946 uint8_t ndx; 3947 stmf_status_t ret; 3948 3949 ASSERT(task->task_additional_flags & TASK_AF_ACCEPT_LU_DBUF); 3950 ASSERT(lport->lport_ds->ds_setup_dbuf != NULL); 3951 ASSERT(dbuf->db_flags & DB_LU_DATA_BUF); 3952 3953 if ((task->task_additional_flags & TASK_AF_ACCEPT_LU_DBUF) == 0) 3954 return (STMF_FAILURE); 3955 if (lport->lport_ds->ds_setup_dbuf == NULL) 3956 return (STMF_FAILURE); 3957 3958 ndx = stmf_first_zero[itask->itask_allocated_buf_map]; 3959 if (ndx == 0xff) 3960 return (STMF_FAILURE); 3961 ret = lport->lport_ds->ds_setup_dbuf(task, dbuf, flags); 3962 if (ret == STMF_FAILURE) 3963 return (STMF_FAILURE); 3964 itask->itask_dbufs[ndx] = dbuf; 3965 task->task_cur_nbufs++; 3966 itask->itask_allocated_buf_map |= (1 << ndx); 3967 dbuf->db_handle = ndx; 3968 3969 return (STMF_SUCCESS); 3970 } 3971 3972 void 3973 stmf_teardown_dbuf(scsi_task_t *task, stmf_data_buf_t *dbuf) 3974 { 3975 stmf_i_scsi_task_t *itask = 3976 (stmf_i_scsi_task_t *)task->task_stmf_private; 3977 stmf_local_port_t *lport = task->task_lport; 3978 3979 ASSERT(task->task_additional_flags & TASK_AF_ACCEPT_LU_DBUF); 3980 ASSERT(lport->lport_ds->ds_teardown_dbuf != NULL); 3981 ASSERT(dbuf->db_flags & DB_LU_DATA_BUF); 3982 3983 itask->itask_allocated_buf_map &= ~(1 << dbuf->db_handle); 3984 task->task_cur_nbufs--; 3985 lport->lport_ds->ds_teardown_dbuf(lport->lport_ds, dbuf); 3986 } 3987 3988 void 3989 stmf_free_dbuf(scsi_task_t *task, stmf_data_buf_t *dbuf) 3990 { 3991 stmf_i_scsi_task_t *itask = 3992 (stmf_i_scsi_task_t *)task->task_stmf_private; 3993 stmf_local_port_t *lport = task->task_lport; 3994 3995 itask->itask_allocated_buf_map &= ~(1 << dbuf->db_handle); 3996 task->task_cur_nbufs--; 3997 lport->lport_ds->ds_free_data_buf(lport->lport_ds, dbuf); 3998 } 3999 4000 stmf_data_buf_t * 4001 stmf_handle_to_buf(scsi_task_t *task, uint8_t h) 4002 { 4003 stmf_i_scsi_task_t *itask; 4004 4005 itask = (stmf_i_scsi_task_t *)task->task_stmf_private; 4006 if (h > 3) 4007 return (NULL); 4008 return (itask->itask_dbufs[h]); 4009 } 4010 4011 /* ARGSUSED */ 4012 struct scsi_task * 4013 stmf_task_alloc(struct stmf_local_port *lport, stmf_scsi_session_t *ss, 4014 uint8_t *lun, uint16_t cdb_length_in, uint16_t ext_id) 4015 { 4016 stmf_lu_t *lu; 4017 stmf_i_scsi_session_t *iss; 4018 stmf_i_lu_t *ilu; 4019 stmf_i_scsi_task_t *itask; 4020 stmf_i_scsi_task_t **ppitask; 4021 scsi_task_t *task; 4022 uint8_t *l; 4023 stmf_lun_map_ent_t *lun_map_ent; 4024 uint16_t cdb_length; 4025 uint16_t luNbr; 4026 uint8_t new_task = 0; 4027 4028 /* 4029 * We allocate 7 extra bytes for CDB to provide a cdb pointer which 4030 * is guaranteed to be 8 byte aligned. Some LU providers like OSD 4031 * depend upon this alignment. 4032 */ 4033 if (cdb_length_in >= 16) 4034 cdb_length = cdb_length_in + 7; 4035 else 4036 cdb_length = 16 + 7; 4037 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private; 4038 luNbr = ((uint16_t)lun[1] | (((uint16_t)(lun[0] & 0x3F)) << 8)); 4039 rw_enter(iss->iss_lockp, RW_READER); 4040 lun_map_ent = 4041 (stmf_lun_map_ent_t *)stmf_get_ent_from_map(iss->iss_sm, luNbr); 4042 if (!lun_map_ent) { 4043 lu = dlun0; 4044 } else { 4045 lu = lun_map_ent->ent_lu; 4046 } 4047 ilu = lu->lu_stmf_private; 4048 if (ilu->ilu_flags & ILU_RESET_ACTIVE) { 4049 rw_exit(iss->iss_lockp); 4050 return (NULL); 4051 } 4052 ASSERT(lu == dlun0 || (ilu->ilu_state != STMF_STATE_OFFLINING && 4053 ilu->ilu_state != STMF_STATE_OFFLINE)); 4054 do { 4055 if (ilu->ilu_free_tasks == NULL) { 4056 new_task = 1; 4057 break; 4058 } 4059 mutex_enter(&ilu->ilu_task_lock); 4060 for (ppitask = &ilu->ilu_free_tasks; (*ppitask != NULL) && 4061 ((*ppitask)->itask_cdb_buf_size < cdb_length); 4062 ppitask = &((*ppitask)->itask_lu_free_next)) 4063 ; 4064 if (*ppitask) { 4065 itask = *ppitask; 4066 *ppitask = (*ppitask)->itask_lu_free_next; 4067 ilu->ilu_ntasks_free--; 4068 if (ilu->ilu_ntasks_free < ilu->ilu_ntasks_min_free) 4069 ilu->ilu_ntasks_min_free = ilu->ilu_ntasks_free; 4070 } else { 4071 new_task = 1; 4072 } 4073 mutex_exit(&ilu->ilu_task_lock); 4074 /* CONSTCOND */ 4075 } while (0); 4076 4077 if (!new_task) { 4078 /* 4079 * Save the task_cdb pointer and zero per cmd fields. 4080 * We know the task_cdb_length is large enough by task 4081 * selection process above. 4082 */ 4083 uint8_t *save_cdb; 4084 uintptr_t t_start, t_end; 4085 4086 task = itask->itask_task; 4087 save_cdb = task->task_cdb; /* save */ 4088 t_start = (uintptr_t)&task->task_flags; 4089 t_end = (uintptr_t)&task->task_extended_cmd; 4090 bzero((void *)t_start, (size_t)(t_end - t_start)); 4091 task->task_cdb = save_cdb; /* restore */ 4092 itask->itask_ncmds = 0; 4093 } else { 4094 task = (scsi_task_t *)stmf_alloc(STMF_STRUCT_SCSI_TASK, 4095 cdb_length, AF_FORCE_NOSLEEP); 4096 if (task == NULL) { 4097 rw_exit(iss->iss_lockp); 4098 return (NULL); 4099 } 4100 task->task_lu = lu; 4101 l = task->task_lun_no; 4102 l[0] = lun[0]; 4103 l[1] = lun[1]; 4104 l[2] = lun[2]; 4105 l[3] = lun[3]; 4106 l[4] = lun[4]; 4107 l[5] = lun[5]; 4108 l[6] = lun[6]; 4109 l[7] = lun[7]; 4110 task->task_cdb = (uint8_t *)task->task_port_private; 4111 if ((ulong_t)(task->task_cdb) & 7ul) { 4112 task->task_cdb = (uint8_t *)(((ulong_t) 4113 (task->task_cdb) + 7ul) & ~(7ul)); 4114 } 4115 itask = (stmf_i_scsi_task_t *)task->task_stmf_private; 4116 itask->itask_cdb_buf_size = cdb_length; 4117 mutex_init(&itask->itask_audit_mutex, NULL, MUTEX_DRIVER, NULL); 4118 } 4119 task->task_session = ss; 4120 task->task_lport = lport; 4121 task->task_cdb_length = cdb_length_in; 4122 itask->itask_flags = ITASK_IN_TRANSITION; 4123 itask->itask_waitq_time = 0; 4124 itask->itask_lu_read_time = itask->itask_lu_write_time = 0; 4125 itask->itask_lport_read_time = itask->itask_lport_write_time = 0; 4126 itask->itask_read_xfer = itask->itask_write_xfer = 0; 4127 itask->itask_audit_index = 0; 4128 4129 if (new_task) { 4130 if (lu->lu_task_alloc(task) != STMF_SUCCESS) { 4131 rw_exit(iss->iss_lockp); 4132 stmf_free(task); 4133 return (NULL); 4134 } 4135 mutex_enter(&ilu->ilu_task_lock); 4136 if (ilu->ilu_flags & ILU_RESET_ACTIVE) { 4137 mutex_exit(&ilu->ilu_task_lock); 4138 rw_exit(iss->iss_lockp); 4139 stmf_free(task); 4140 return (NULL); 4141 } 4142 itask->itask_lu_next = ilu->ilu_tasks; 4143 if (ilu->ilu_tasks) 4144 ilu->ilu_tasks->itask_lu_prev = itask; 4145 ilu->ilu_tasks = itask; 4146 /* kmem_zalloc automatically makes itask->itask_lu_prev NULL */ 4147 ilu->ilu_ntasks++; 4148 mutex_exit(&ilu->ilu_task_lock); 4149 } 4150 4151 itask->itask_ilu_task_cntr = ilu->ilu_cur_task_cntr; 4152 atomic_inc_32(itask->itask_ilu_task_cntr); 4153 itask->itask_start_time = ddi_get_lbolt(); 4154 4155 if ((lun_map_ent != NULL) && ((itask->itask_itl_datap = 4156 lun_map_ent->ent_itl_datap) != NULL)) { 4157 atomic_inc_32(&itask->itask_itl_datap->itl_counter); 4158 task->task_lu_itl_handle = itask->itask_itl_datap->itl_handle; 4159 } else { 4160 itask->itask_itl_datap = NULL; 4161 task->task_lu_itl_handle = NULL; 4162 } 4163 4164 rw_exit(iss->iss_lockp); 4165 return (task); 4166 } 4167 4168 static void 4169 stmf_task_lu_free(scsi_task_t *task, stmf_i_scsi_session_t *iss) 4170 { 4171 stmf_i_scsi_task_t *itask = 4172 (stmf_i_scsi_task_t *)task->task_stmf_private; 4173 stmf_i_lu_t *ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 4174 4175 ASSERT(rw_lock_held(iss->iss_lockp)); 4176 itask->itask_flags = ITASK_IN_FREE_LIST; 4177 itask->itask_proxy_msg_id = 0; 4178 mutex_enter(&ilu->ilu_task_lock); 4179 itask->itask_lu_free_next = ilu->ilu_free_tasks; 4180 ilu->ilu_free_tasks = itask; 4181 ilu->ilu_ntasks_free++; 4182 if (ilu->ilu_ntasks == ilu->ilu_ntasks_free) 4183 cv_signal(&ilu->ilu_offline_pending_cv); 4184 mutex_exit(&ilu->ilu_task_lock); 4185 atomic_dec_32(itask->itask_ilu_task_cntr); 4186 } 4187 4188 void 4189 stmf_task_lu_check_freelist(stmf_i_lu_t *ilu) 4190 { 4191 uint32_t num_to_release, ndx; 4192 stmf_i_scsi_task_t *itask; 4193 stmf_lu_t *lu = ilu->ilu_lu; 4194 4195 ASSERT(ilu->ilu_ntasks_min_free <= ilu->ilu_ntasks_free); 4196 4197 /* free half of the minimal free of the free tasks */ 4198 num_to_release = (ilu->ilu_ntasks_min_free + 1) / 2; 4199 if (!num_to_release) { 4200 return; 4201 } 4202 for (ndx = 0; ndx < num_to_release; ndx++) { 4203 mutex_enter(&ilu->ilu_task_lock); 4204 itask = ilu->ilu_free_tasks; 4205 if (itask == NULL) { 4206 mutex_exit(&ilu->ilu_task_lock); 4207 break; 4208 } 4209 ilu->ilu_free_tasks = itask->itask_lu_free_next; 4210 ilu->ilu_ntasks_free--; 4211 mutex_exit(&ilu->ilu_task_lock); 4212 4213 lu->lu_task_free(itask->itask_task); 4214 mutex_enter(&ilu->ilu_task_lock); 4215 if (itask->itask_lu_next) 4216 itask->itask_lu_next->itask_lu_prev = 4217 itask->itask_lu_prev; 4218 if (itask->itask_lu_prev) 4219 itask->itask_lu_prev->itask_lu_next = 4220 itask->itask_lu_next; 4221 else 4222 ilu->ilu_tasks = itask->itask_lu_next; 4223 4224 ilu->ilu_ntasks--; 4225 mutex_exit(&ilu->ilu_task_lock); 4226 stmf_free(itask->itask_task); 4227 } 4228 } 4229 4230 /* 4231 * Called with stmf_lock held 4232 */ 4233 void 4234 stmf_check_freetask() 4235 { 4236 stmf_i_lu_t *ilu; 4237 clock_t endtime = ddi_get_lbolt() + drv_usectohz(10000); 4238 4239 /* stmf_svc_ilu_draining may get changed after stmf_lock is released */ 4240 while ((ilu = stmf_state.stmf_svc_ilu_draining) != NULL) { 4241 stmf_state.stmf_svc_ilu_draining = ilu->ilu_next; 4242 if (!ilu->ilu_ntasks_min_free) { 4243 ilu->ilu_ntasks_min_free = ilu->ilu_ntasks_free; 4244 continue; 4245 } 4246 ilu->ilu_flags |= ILU_STALL_DEREGISTER; 4247 mutex_exit(&stmf_state.stmf_lock); 4248 stmf_task_lu_check_freelist(ilu); 4249 /* 4250 * we do not care about the accuracy of 4251 * ilu_ntasks_min_free, so we don't lock here 4252 */ 4253 ilu->ilu_ntasks_min_free = ilu->ilu_ntasks_free; 4254 mutex_enter(&stmf_state.stmf_lock); 4255 ilu->ilu_flags &= ~ILU_STALL_DEREGISTER; 4256 cv_broadcast(&stmf_state.stmf_cv); 4257 if (ddi_get_lbolt() >= endtime) 4258 break; 4259 } 4260 } 4261 4262 void 4263 stmf_do_ilu_timeouts(stmf_i_lu_t *ilu) 4264 { 4265 clock_t l = ddi_get_lbolt(); 4266 clock_t ps = drv_usectohz(1000000); 4267 stmf_i_scsi_task_t *itask; 4268 scsi_task_t *task; 4269 uint32_t to; 4270 4271 mutex_enter(&ilu->ilu_task_lock); 4272 for (itask = ilu->ilu_tasks; itask != NULL; 4273 itask = itask->itask_lu_next) { 4274 if (itask->itask_flags & (ITASK_IN_FREE_LIST | 4275 ITASK_BEING_ABORTED)) { 4276 continue; 4277 } 4278 task = itask->itask_task; 4279 if (task->task_timeout == 0) 4280 to = stmf_default_task_timeout; 4281 else 4282 to = task->task_timeout; 4283 if ((itask->itask_start_time + (to * ps)) > l) 4284 continue; 4285 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 4286 STMF_TIMEOUT, NULL); 4287 } 4288 mutex_exit(&ilu->ilu_task_lock); 4289 } 4290 4291 /* 4292 * Called with stmf_lock held 4293 */ 4294 void 4295 stmf_check_ilu_timing() 4296 { 4297 stmf_i_lu_t *ilu; 4298 clock_t endtime = ddi_get_lbolt() + drv_usectohz(10000); 4299 4300 /* stmf_svc_ilu_timing may get changed after stmf_lock is released */ 4301 while ((ilu = stmf_state.stmf_svc_ilu_timing) != NULL) { 4302 stmf_state.stmf_svc_ilu_timing = ilu->ilu_next; 4303 if (ilu->ilu_cur_task_cntr == (&ilu->ilu_task_cntr1)) { 4304 if (ilu->ilu_task_cntr2 == 0) { 4305 ilu->ilu_cur_task_cntr = &ilu->ilu_task_cntr2; 4306 continue; 4307 } 4308 } else { 4309 if (ilu->ilu_task_cntr1 == 0) { 4310 ilu->ilu_cur_task_cntr = &ilu->ilu_task_cntr1; 4311 continue; 4312 } 4313 } 4314 /* 4315 * If we are here then it means that there is some slowdown 4316 * in tasks on this lu. We need to check. 4317 */ 4318 ilu->ilu_flags |= ILU_STALL_DEREGISTER; 4319 mutex_exit(&stmf_state.stmf_lock); 4320 stmf_do_ilu_timeouts(ilu); 4321 mutex_enter(&stmf_state.stmf_lock); 4322 ilu->ilu_flags &= ~ILU_STALL_DEREGISTER; 4323 cv_broadcast(&stmf_state.stmf_cv); 4324 if (ddi_get_lbolt() >= endtime) 4325 break; 4326 } 4327 } 4328 4329 /* 4330 * Kills all tasks on a lu except tm_task 4331 */ 4332 void 4333 stmf_task_lu_killall(stmf_lu_t *lu, scsi_task_t *tm_task, stmf_status_t s) 4334 { 4335 stmf_i_lu_t *ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 4336 stmf_i_scsi_task_t *itask; 4337 4338 mutex_enter(&ilu->ilu_task_lock); 4339 4340 for (itask = ilu->ilu_tasks; itask != NULL; 4341 itask = itask->itask_lu_next) { 4342 if (itask->itask_flags & ITASK_IN_FREE_LIST) 4343 continue; 4344 if (itask->itask_task == tm_task) 4345 continue; 4346 stmf_abort(STMF_QUEUE_TASK_ABORT, itask->itask_task, s, NULL); 4347 } 4348 mutex_exit(&ilu->ilu_task_lock); 4349 } 4350 4351 void 4352 stmf_free_task_bufs(stmf_i_scsi_task_t *itask, stmf_local_port_t *lport) 4353 { 4354 int i; 4355 uint8_t map; 4356 4357 if ((map = itask->itask_allocated_buf_map) == 0) 4358 return; 4359 for (i = 0; i < 4; i++) { 4360 if (map & 1) { 4361 stmf_data_buf_t *dbuf; 4362 4363 dbuf = itask->itask_dbufs[i]; 4364 if (dbuf->db_xfer_start_timestamp) { 4365 stmf_lport_xfer_done(itask, dbuf); 4366 } 4367 if (dbuf->db_flags & DB_LU_DATA_BUF) { 4368 /* 4369 * LU needs to clean up buffer. 4370 * LU is required to free the buffer 4371 * in the xfer_done handler. 4372 */ 4373 scsi_task_t *task = itask->itask_task; 4374 stmf_lu_t *lu = task->task_lu; 4375 4376 lu->lu_dbuf_free(task, dbuf); 4377 ASSERT(((itask->itask_allocated_buf_map>>i) 4378 & 1) == 0); /* must be gone */ 4379 } else { 4380 ASSERT(dbuf->db_lu_private == NULL); 4381 dbuf->db_lu_private = NULL; 4382 lport->lport_ds->ds_free_data_buf( 4383 lport->lport_ds, dbuf); 4384 } 4385 } 4386 map >>= 1; 4387 } 4388 itask->itask_allocated_buf_map = 0; 4389 } 4390 4391 void 4392 stmf_task_free(scsi_task_t *task) 4393 { 4394 stmf_local_port_t *lport = task->task_lport; 4395 stmf_i_scsi_task_t *itask = (stmf_i_scsi_task_t *) 4396 task->task_stmf_private; 4397 stmf_i_scsi_session_t *iss = (stmf_i_scsi_session_t *) 4398 task->task_session->ss_stmf_private; 4399 4400 stmf_task_audit(itask, TE_TASK_FREE, CMD_OR_IOF_NA, NULL); 4401 4402 stmf_free_task_bufs(itask, lport); 4403 stmf_itl_task_done(itask); 4404 DTRACE_PROBE2(stmf__task__end, scsi_task_t *, task, 4405 hrtime_t, 4406 itask->itask_done_timestamp - itask->itask_start_timestamp); 4407 if (itask->itask_itl_datap) { 4408 if (atomic_dec_32_nv(&itask->itask_itl_datap->itl_counter) == 4409 0) { 4410 stmf_release_itl_handle(task->task_lu, 4411 itask->itask_itl_datap); 4412 } 4413 } 4414 4415 rw_enter(iss->iss_lockp, RW_READER); 4416 lport->lport_task_free(task); 4417 if (itask->itask_worker) { 4418 atomic_dec_32(&stmf_cur_ntasks); 4419 atomic_dec_32(&itask->itask_worker->worker_ref_count); 4420 } 4421 /* 4422 * After calling stmf_task_lu_free, the task pointer can no longer 4423 * be trusted. 4424 */ 4425 stmf_task_lu_free(task, iss); 4426 rw_exit(iss->iss_lockp); 4427 } 4428 4429 void 4430 stmf_post_task(scsi_task_t *task, stmf_data_buf_t *dbuf) 4431 { 4432 stmf_i_scsi_task_t *itask = (stmf_i_scsi_task_t *) 4433 task->task_stmf_private; 4434 stmf_i_lu_t *ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 4435 int nv; 4436 uint32_t old, new; 4437 uint32_t ct; 4438 stmf_worker_t *w, *w1; 4439 uint8_t tm; 4440 4441 if (task->task_max_nbufs > 4) 4442 task->task_max_nbufs = 4; 4443 task->task_cur_nbufs = 0; 4444 /* Latest value of currently running tasks */ 4445 ct = atomic_inc_32_nv(&stmf_cur_ntasks); 4446 4447 /* Select the next worker using round robin */ 4448 nv = (int)atomic_inc_32_nv((uint32_t *)&stmf_worker_sel_counter); 4449 if (nv >= stmf_nworkers_accepting_cmds) { 4450 int s = nv; 4451 do { 4452 nv -= stmf_nworkers_accepting_cmds; 4453 } while (nv >= stmf_nworkers_accepting_cmds); 4454 if (nv < 0) 4455 nv = 0; 4456 /* Its ok if this cas fails */ 4457 (void) atomic_cas_32((uint32_t *)&stmf_worker_sel_counter, 4458 s, nv); 4459 } 4460 w = &stmf_workers[nv]; 4461 4462 /* 4463 * A worker can be pinned by interrupt. So select the next one 4464 * if it has lower load. 4465 */ 4466 if ((nv + 1) >= stmf_nworkers_accepting_cmds) { 4467 w1 = stmf_workers; 4468 } else { 4469 w1 = &stmf_workers[nv + 1]; 4470 } 4471 if (w1->worker_queue_depth < w->worker_queue_depth) 4472 w = w1; 4473 4474 mutex_enter(&w->worker_lock); 4475 if (((w->worker_flags & STMF_WORKER_STARTED) == 0) || 4476 (w->worker_flags & STMF_WORKER_TERMINATE)) { 4477 /* 4478 * Maybe we are in the middle of a change. Just go to 4479 * the 1st worker. 4480 */ 4481 mutex_exit(&w->worker_lock); 4482 w = stmf_workers; 4483 mutex_enter(&w->worker_lock); 4484 } 4485 itask->itask_worker = w; 4486 /* 4487 * Track max system load inside the worker as we already have the 4488 * worker lock (no point implementing another lock). The service 4489 * thread will do the comparisons and figure out the max overall 4490 * system load. 4491 */ 4492 if (w->worker_max_sys_qdepth_pu < ct) 4493 w->worker_max_sys_qdepth_pu = ct; 4494 4495 do { 4496 old = new = itask->itask_flags; 4497 new |= ITASK_KNOWN_TO_TGT_PORT | ITASK_IN_WORKER_QUEUE; 4498 if (task->task_mgmt_function) { 4499 tm = task->task_mgmt_function; 4500 if ((tm == TM_TARGET_RESET) || 4501 (tm == TM_TARGET_COLD_RESET) || 4502 (tm == TM_TARGET_WARM_RESET)) { 4503 new |= ITASK_DEFAULT_HANDLING; 4504 } 4505 } else if (task->task_cdb[0] == SCMD_REPORT_LUNS) { 4506 new |= ITASK_DEFAULT_HANDLING; 4507 } 4508 new &= ~ITASK_IN_TRANSITION; 4509 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 4510 4511 stmf_itl_task_start(itask); 4512 4513 itask->itask_worker_next = NULL; 4514 if (w->worker_task_tail) { 4515 w->worker_task_tail->itask_worker_next = itask; 4516 } else { 4517 w->worker_task_head = itask; 4518 } 4519 w->worker_task_tail = itask; 4520 if (++(w->worker_queue_depth) > w->worker_max_qdepth_pu) { 4521 w->worker_max_qdepth_pu = w->worker_queue_depth; 4522 } 4523 /* Measure task waitq time */ 4524 itask->itask_waitq_enter_timestamp = gethrtime(); 4525 atomic_inc_32(&w->worker_ref_count); 4526 itask->itask_cmd_stack[0] = ITASK_CMD_NEW_TASK; 4527 itask->itask_ncmds = 1; 4528 stmf_task_audit(itask, TE_TASK_START, CMD_OR_IOF_NA, dbuf); 4529 if (dbuf) { 4530 itask->itask_allocated_buf_map = 1; 4531 itask->itask_dbufs[0] = dbuf; 4532 dbuf->db_handle = 0; 4533 } else { 4534 itask->itask_allocated_buf_map = 0; 4535 itask->itask_dbufs[0] = NULL; 4536 } 4537 4538 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0) { 4539 w->worker_signal_timestamp = gethrtime(); 4540 DTRACE_PROBE2(worker__signal, stmf_worker_t *, w, 4541 scsi_task_t *, task); 4542 cv_signal(&w->worker_cv); 4543 } 4544 mutex_exit(&w->worker_lock); 4545 4546 /* 4547 * This can only happen if during stmf_task_alloc(), ILU_RESET_ACTIVE 4548 * was set between checking of ILU_RESET_ACTIVE and clearing of the 4549 * ITASK_IN_FREE_LIST flag. Take care of these "sneaked-in" tasks here. 4550 */ 4551 if (ilu->ilu_flags & ILU_RESET_ACTIVE) { 4552 stmf_abort(STMF_QUEUE_TASK_ABORT, task, STMF_ABORTED, NULL); 4553 } 4554 } 4555 4556 static void 4557 stmf_task_audit(stmf_i_scsi_task_t *itask, 4558 task_audit_event_t te, uint32_t cmd_or_iof, stmf_data_buf_t *dbuf) 4559 { 4560 stmf_task_audit_rec_t *ar; 4561 4562 mutex_enter(&itask->itask_audit_mutex); 4563 ar = &itask->itask_audit_records[itask->itask_audit_index++]; 4564 itask->itask_audit_index &= (ITASK_TASK_AUDIT_DEPTH - 1); 4565 ar->ta_event = te; 4566 ar->ta_cmd_or_iof = cmd_or_iof; 4567 ar->ta_itask_flags = itask->itask_flags; 4568 ar->ta_dbuf = dbuf; 4569 gethrestime(&ar->ta_timestamp); 4570 mutex_exit(&itask->itask_audit_mutex); 4571 } 4572 4573 4574 /* 4575 * ++++++++++++++ ABORT LOGIC ++++++++++++++++++++ 4576 * Once ITASK_BEING_ABORTED is set, ITASK_KNOWN_TO_LU can be reset already 4577 * i.e. before ITASK_BEING_ABORTED being set. But if it was not, it cannot 4578 * be reset until the LU explicitly calls stmf_task_lu_aborted(). Of course 4579 * the LU will make this call only if we call the LU's abort entry point. 4580 * we will only call that entry point if ITASK_KNOWN_TO_LU was set. 4581 * 4582 * Same logic applies for the port. 4583 * 4584 * Also ITASK_BEING_ABORTED will not be allowed to set if both KNOWN_TO_LU 4585 * and KNOWN_TO_TGT_PORT are reset. 4586 * 4587 * +++++++++++++++++++++++++++++++++++++++++++++++ 4588 */ 4589 4590 stmf_status_t 4591 stmf_xfer_data(scsi_task_t *task, stmf_data_buf_t *dbuf, uint32_t ioflags) 4592 { 4593 stmf_status_t ret = STMF_SUCCESS; 4594 4595 stmf_i_scsi_task_t *itask = 4596 (stmf_i_scsi_task_t *)task->task_stmf_private; 4597 4598 stmf_task_audit(itask, TE_XFER_START, ioflags, dbuf); 4599 4600 if (ioflags & STMF_IOF_LU_DONE) { 4601 uint32_t new, old; 4602 do { 4603 new = old = itask->itask_flags; 4604 if (new & ITASK_BEING_ABORTED) 4605 return (STMF_ABORTED); 4606 new &= ~ITASK_KNOWN_TO_LU; 4607 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 4608 } 4609 if (itask->itask_flags & ITASK_BEING_ABORTED) 4610 return (STMF_ABORTED); 4611 #ifdef DEBUG 4612 if (!(ioflags & STMF_IOF_STATS_ONLY) && stmf_drop_buf_counter > 0) { 4613 if (atomic_dec_32_nv(&stmf_drop_buf_counter) == 1) 4614 return (STMF_SUCCESS); 4615 } 4616 #endif 4617 4618 stmf_update_kstat_lu_io(task, dbuf); 4619 stmf_update_kstat_lport_io(task, dbuf); 4620 stmf_lport_xfer_start(itask, dbuf); 4621 if (ioflags & STMF_IOF_STATS_ONLY) { 4622 stmf_lport_xfer_done(itask, dbuf); 4623 return (STMF_SUCCESS); 4624 } 4625 4626 dbuf->db_flags |= DB_LPORT_XFER_ACTIVE; 4627 ret = task->task_lport->lport_xfer_data(task, dbuf, ioflags); 4628 4629 /* 4630 * Port provider may have already called the buffer callback in 4631 * which case dbuf->db_xfer_start_timestamp will be 0. 4632 */ 4633 if (ret != STMF_SUCCESS) { 4634 dbuf->db_flags &= ~DB_LPORT_XFER_ACTIVE; 4635 if (dbuf->db_xfer_start_timestamp != 0) 4636 stmf_lport_xfer_done(itask, dbuf); 4637 } 4638 4639 return (ret); 4640 } 4641 4642 void 4643 stmf_data_xfer_done(scsi_task_t *task, stmf_data_buf_t *dbuf, uint32_t iof) 4644 { 4645 stmf_i_scsi_task_t *itask = 4646 (stmf_i_scsi_task_t *)task->task_stmf_private; 4647 stmf_i_local_port_t *ilport; 4648 stmf_worker_t *w = itask->itask_worker; 4649 uint32_t new, old; 4650 uint8_t update_queue_flags, free_it, queue_it; 4651 4652 stmf_lport_xfer_done(itask, dbuf); 4653 4654 stmf_task_audit(itask, TE_XFER_DONE, iof, dbuf); 4655 4656 /* Guard against unexpected completions from the lport */ 4657 if (dbuf->db_flags & DB_LPORT_XFER_ACTIVE) { 4658 dbuf->db_flags &= ~DB_LPORT_XFER_ACTIVE; 4659 } else { 4660 /* 4661 * This should never happen. 4662 */ 4663 ilport = task->task_lport->lport_stmf_private; 4664 ilport->ilport_unexpected_comp++; 4665 cmn_err(CE_PANIC, "Unexpected xfer completion task %p dbuf %p", 4666 (void *)task, (void *)dbuf); 4667 return; 4668 } 4669 4670 mutex_enter(&w->worker_lock); 4671 do { 4672 new = old = itask->itask_flags; 4673 if (old & ITASK_BEING_ABORTED) { 4674 mutex_exit(&w->worker_lock); 4675 return; 4676 } 4677 free_it = 0; 4678 if (iof & STMF_IOF_LPORT_DONE) { 4679 new &= ~ITASK_KNOWN_TO_TGT_PORT; 4680 task->task_completion_status = dbuf->db_xfer_status; 4681 free_it = 1; 4682 } 4683 /* 4684 * If the task is known to LU then queue it. But if 4685 * it is already queued (multiple completions) then 4686 * just update the buffer information by grabbing the 4687 * worker lock. If the task is not known to LU, 4688 * completed/aborted, then see if we need to 4689 * free this task. 4690 */ 4691 if (old & ITASK_KNOWN_TO_LU) { 4692 free_it = 0; 4693 update_queue_flags = 1; 4694 if (old & ITASK_IN_WORKER_QUEUE) { 4695 queue_it = 0; 4696 } else { 4697 queue_it = 1; 4698 new |= ITASK_IN_WORKER_QUEUE; 4699 } 4700 } else { 4701 update_queue_flags = 0; 4702 queue_it = 0; 4703 } 4704 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 4705 4706 if (update_queue_flags) { 4707 uint8_t cmd = (dbuf->db_handle << 5) | ITASK_CMD_DATA_XFER_DONE; 4708 4709 ASSERT(itask->itask_ncmds < ITASK_MAX_NCMDS); 4710 itask->itask_cmd_stack[itask->itask_ncmds++] = cmd; 4711 if (queue_it) { 4712 itask->itask_worker_next = NULL; 4713 if (w->worker_task_tail) { 4714 w->worker_task_tail->itask_worker_next = itask; 4715 } else { 4716 w->worker_task_head = itask; 4717 } 4718 w->worker_task_tail = itask; 4719 /* Measure task waitq time */ 4720 itask->itask_waitq_enter_timestamp = gethrtime(); 4721 if (++(w->worker_queue_depth) > 4722 w->worker_max_qdepth_pu) { 4723 w->worker_max_qdepth_pu = w->worker_queue_depth; 4724 } 4725 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0) 4726 cv_signal(&w->worker_cv); 4727 } 4728 } 4729 mutex_exit(&w->worker_lock); 4730 4731 if (free_it) { 4732 if ((itask->itask_flags & (ITASK_KNOWN_TO_LU | 4733 ITASK_KNOWN_TO_TGT_PORT | ITASK_IN_WORKER_QUEUE | 4734 ITASK_BEING_ABORTED)) == 0) { 4735 stmf_task_free(task); 4736 } 4737 } 4738 } 4739 4740 stmf_status_t 4741 stmf_send_scsi_status(scsi_task_t *task, uint32_t ioflags) 4742 { 4743 DTRACE_PROBE1(scsi__send__status, scsi_task_t *, task); 4744 4745 stmf_i_scsi_task_t *itask = 4746 (stmf_i_scsi_task_t *)task->task_stmf_private; 4747 4748 stmf_task_audit(itask, TE_SEND_STATUS, ioflags, NULL); 4749 4750 if (ioflags & STMF_IOF_LU_DONE) { 4751 uint32_t new, old; 4752 do { 4753 new = old = itask->itask_flags; 4754 if (new & ITASK_BEING_ABORTED) 4755 return (STMF_ABORTED); 4756 new &= ~ITASK_KNOWN_TO_LU; 4757 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 4758 } 4759 4760 if (!(itask->itask_flags & ITASK_KNOWN_TO_TGT_PORT)) { 4761 return (STMF_SUCCESS); 4762 } 4763 4764 if (itask->itask_flags & ITASK_BEING_ABORTED) 4765 return (STMF_ABORTED); 4766 4767 if (task->task_additional_flags & TASK_AF_NO_EXPECTED_XFER_LENGTH) { 4768 task->task_status_ctrl = 0; 4769 task->task_resid = 0; 4770 } else if (task->task_cmd_xfer_length > 4771 task->task_expected_xfer_length) { 4772 task->task_status_ctrl = TASK_SCTRL_OVER; 4773 task->task_resid = task->task_cmd_xfer_length - 4774 task->task_expected_xfer_length; 4775 } else if (task->task_nbytes_transferred < 4776 task->task_expected_xfer_length) { 4777 task->task_status_ctrl = TASK_SCTRL_UNDER; 4778 task->task_resid = task->task_expected_xfer_length - 4779 task->task_nbytes_transferred; 4780 } else { 4781 task->task_status_ctrl = 0; 4782 task->task_resid = 0; 4783 } 4784 return (task->task_lport->lport_send_status(task, ioflags)); 4785 } 4786 4787 void 4788 stmf_send_status_done(scsi_task_t *task, stmf_status_t s, uint32_t iof) 4789 { 4790 stmf_i_scsi_task_t *itask = 4791 (stmf_i_scsi_task_t *)task->task_stmf_private; 4792 stmf_worker_t *w = itask->itask_worker; 4793 uint32_t new, old; 4794 uint8_t free_it, queue_it; 4795 4796 stmf_task_audit(itask, TE_SEND_STATUS_DONE, iof, NULL); 4797 4798 mutex_enter(&w->worker_lock); 4799 do { 4800 new = old = itask->itask_flags; 4801 if (old & ITASK_BEING_ABORTED) { 4802 mutex_exit(&w->worker_lock); 4803 return; 4804 } 4805 free_it = 0; 4806 if (iof & STMF_IOF_LPORT_DONE) { 4807 new &= ~ITASK_KNOWN_TO_TGT_PORT; 4808 free_it = 1; 4809 } 4810 /* 4811 * If the task is known to LU then queue it. But if 4812 * it is already queued (multiple completions) then 4813 * just update the buffer information by grabbing the 4814 * worker lock. If the task is not known to LU, 4815 * completed/aborted, then see if we need to 4816 * free this task. 4817 */ 4818 if (old & ITASK_KNOWN_TO_LU) { 4819 free_it = 0; 4820 queue_it = 1; 4821 if (old & ITASK_IN_WORKER_QUEUE) { 4822 cmn_err(CE_PANIC, "status completion received" 4823 " when task is already in worker queue " 4824 " task = %p", (void *)task); 4825 } 4826 new |= ITASK_IN_WORKER_QUEUE; 4827 } else { 4828 queue_it = 0; 4829 } 4830 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 4831 task->task_completion_status = s; 4832 4833 4834 if (queue_it) { 4835 ASSERT(itask->itask_ncmds < ITASK_MAX_NCMDS); 4836 itask->itask_cmd_stack[itask->itask_ncmds++] = 4837 ITASK_CMD_STATUS_DONE; 4838 itask->itask_worker_next = NULL; 4839 if (w->worker_task_tail) { 4840 w->worker_task_tail->itask_worker_next = itask; 4841 } else { 4842 w->worker_task_head = itask; 4843 } 4844 w->worker_task_tail = itask; 4845 /* Measure task waitq time */ 4846 itask->itask_waitq_enter_timestamp = gethrtime(); 4847 if (++(w->worker_queue_depth) > w->worker_max_qdepth_pu) { 4848 w->worker_max_qdepth_pu = w->worker_queue_depth; 4849 } 4850 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0) 4851 cv_signal(&w->worker_cv); 4852 } 4853 mutex_exit(&w->worker_lock); 4854 4855 if (free_it) { 4856 if ((itask->itask_flags & (ITASK_KNOWN_TO_LU | 4857 ITASK_KNOWN_TO_TGT_PORT | ITASK_IN_WORKER_QUEUE | 4858 ITASK_BEING_ABORTED)) == 0) { 4859 stmf_task_free(task); 4860 } else { 4861 cmn_err(CE_PANIC, "LU is done with the task but LPORT " 4862 " is not done, itask %p itask_flags %x", 4863 (void *)itask, itask->itask_flags); 4864 } 4865 } 4866 } 4867 4868 void 4869 stmf_task_lu_done(scsi_task_t *task) 4870 { 4871 stmf_i_scsi_task_t *itask = 4872 (stmf_i_scsi_task_t *)task->task_stmf_private; 4873 stmf_worker_t *w = itask->itask_worker; 4874 uint32_t new, old; 4875 4876 mutex_enter(&w->worker_lock); 4877 do { 4878 new = old = itask->itask_flags; 4879 if (old & ITASK_BEING_ABORTED) { 4880 mutex_exit(&w->worker_lock); 4881 return; 4882 } 4883 if (old & ITASK_IN_WORKER_QUEUE) { 4884 cmn_err(CE_PANIC, "task_lu_done received" 4885 " when task is in worker queue " 4886 " task = %p", (void *)task); 4887 } 4888 new &= ~ITASK_KNOWN_TO_LU; 4889 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 4890 4891 mutex_exit(&w->worker_lock); 4892 4893 if ((itask->itask_flags & (ITASK_KNOWN_TO_LU | 4894 ITASK_KNOWN_TO_TGT_PORT | ITASK_IN_WORKER_QUEUE | 4895 ITASK_BEING_ABORTED)) == 0) { 4896 stmf_task_free(task); 4897 } else { 4898 cmn_err(CE_PANIC, "stmf_lu_done should be the last stage but " 4899 " the task is still not done, task = %p", (void *)task); 4900 } 4901 } 4902 4903 void 4904 stmf_queue_task_for_abort(scsi_task_t *task, stmf_status_t s) 4905 { 4906 stmf_i_scsi_task_t *itask = 4907 (stmf_i_scsi_task_t *)task->task_stmf_private; 4908 stmf_worker_t *w; 4909 uint32_t old, new; 4910 4911 stmf_task_audit(itask, TE_TASK_ABORT, CMD_OR_IOF_NA, NULL); 4912 4913 do { 4914 old = new = itask->itask_flags; 4915 if ((old & ITASK_BEING_ABORTED) || 4916 ((old & (ITASK_KNOWN_TO_TGT_PORT | 4917 ITASK_KNOWN_TO_LU)) == 0)) { 4918 return; 4919 } 4920 new |= ITASK_BEING_ABORTED; 4921 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 4922 task->task_completion_status = s; 4923 itask->itask_start_time = ddi_get_lbolt(); 4924 4925 if (((w = itask->itask_worker) == NULL) || 4926 (itask->itask_flags & ITASK_IN_TRANSITION)) { 4927 return; 4928 } 4929 4930 /* Queue it and get out */ 4931 mutex_enter(&w->worker_lock); 4932 if (itask->itask_flags & ITASK_IN_WORKER_QUEUE) { 4933 mutex_exit(&w->worker_lock); 4934 return; 4935 } 4936 atomic_or_32(&itask->itask_flags, ITASK_IN_WORKER_QUEUE); 4937 itask->itask_worker_next = NULL; 4938 if (w->worker_task_tail) { 4939 w->worker_task_tail->itask_worker_next = itask; 4940 } else { 4941 w->worker_task_head = itask; 4942 } 4943 w->worker_task_tail = itask; 4944 if (++(w->worker_queue_depth) > w->worker_max_qdepth_pu) { 4945 w->worker_max_qdepth_pu = w->worker_queue_depth; 4946 } 4947 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0) 4948 cv_signal(&w->worker_cv); 4949 mutex_exit(&w->worker_lock); 4950 } 4951 4952 void 4953 stmf_abort(int abort_cmd, scsi_task_t *task, stmf_status_t s, void *arg) 4954 { 4955 stmf_i_scsi_task_t *itask = NULL; 4956 uint32_t old, new, f, rf; 4957 4958 DTRACE_PROBE2(scsi__task__abort, scsi_task_t *, task, 4959 stmf_status_t, s); 4960 4961 switch (abort_cmd) { 4962 case STMF_QUEUE_ABORT_LU: 4963 stmf_task_lu_killall((stmf_lu_t *)arg, task, s); 4964 return; 4965 case STMF_QUEUE_TASK_ABORT: 4966 stmf_queue_task_for_abort(task, s); 4967 return; 4968 case STMF_REQUEUE_TASK_ABORT_LPORT: 4969 rf = ITASK_TGT_PORT_ABORT_CALLED; 4970 f = ITASK_KNOWN_TO_TGT_PORT; 4971 break; 4972 case STMF_REQUEUE_TASK_ABORT_LU: 4973 rf = ITASK_LU_ABORT_CALLED; 4974 f = ITASK_KNOWN_TO_LU; 4975 break; 4976 default: 4977 return; 4978 } 4979 itask = (stmf_i_scsi_task_t *)task->task_stmf_private; 4980 f |= ITASK_BEING_ABORTED | rf; 4981 do { 4982 old = new = itask->itask_flags; 4983 if ((old & f) != f) { 4984 return; 4985 } 4986 new &= ~rf; 4987 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 4988 } 4989 4990 void 4991 stmf_task_lu_aborted(scsi_task_t *task, stmf_status_t s, uint32_t iof) 4992 { 4993 char info[STMF_CHANGE_INFO_LEN]; 4994 stmf_i_scsi_task_t *itask = TASK_TO_ITASK(task); 4995 unsigned long long st; 4996 4997 stmf_task_audit(itask, TE_TASK_LU_ABORTED, iof, NULL); 4998 4999 st = s; /* gcc fix */ 5000 if ((s != STMF_ABORT_SUCCESS) && (s != STMF_NOT_FOUND)) { 5001 (void) snprintf(info, sizeof (info), 5002 "task %p, lu failed to abort ret=%llx", (void *)task, st); 5003 } else if ((iof & STMF_IOF_LU_DONE) == 0) { 5004 (void) snprintf(info, sizeof (info), 5005 "Task aborted but LU is not finished, task =" 5006 "%p, s=%llx, iof=%x", (void *)task, st, iof); 5007 } else { 5008 /* 5009 * LU abort successfully 5010 */ 5011 atomic_and_32(&itask->itask_flags, ~ITASK_KNOWN_TO_LU); 5012 return; 5013 } 5014 5015 stmf_abort_task_offline(task, 1, info); 5016 } 5017 5018 void 5019 stmf_task_lport_aborted(scsi_task_t *task, stmf_status_t s, uint32_t iof) 5020 { 5021 char info[STMF_CHANGE_INFO_LEN]; 5022 stmf_i_scsi_task_t *itask = TASK_TO_ITASK(task); 5023 unsigned long long st; 5024 uint32_t old, new; 5025 5026 stmf_task_audit(itask, TE_TASK_LPORT_ABORTED, iof, NULL); 5027 5028 st = s; 5029 if ((s != STMF_ABORT_SUCCESS) && (s != STMF_NOT_FOUND)) { 5030 (void) snprintf(info, sizeof (info), 5031 "task %p, tgt port failed to abort ret=%llx", (void *)task, 5032 st); 5033 } else if ((iof & STMF_IOF_LPORT_DONE) == 0) { 5034 (void) snprintf(info, sizeof (info), 5035 "Task aborted but tgt port is not finished, " 5036 "task=%p, s=%llx, iof=%x", (void *)task, st, iof); 5037 } else { 5038 /* 5039 * LPORT abort successfully 5040 */ 5041 do { 5042 old = new = itask->itask_flags; 5043 if (!(old & ITASK_KNOWN_TO_TGT_PORT)) 5044 return; 5045 new &= ~ITASK_KNOWN_TO_TGT_PORT; 5046 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 5047 return; 5048 } 5049 5050 stmf_abort_task_offline(task, 0, info); 5051 } 5052 5053 stmf_status_t 5054 stmf_task_poll_lu(scsi_task_t *task, uint32_t timeout) 5055 { 5056 stmf_i_scsi_task_t *itask = (stmf_i_scsi_task_t *) 5057 task->task_stmf_private; 5058 stmf_worker_t *w = itask->itask_worker; 5059 int i; 5060 5061 ASSERT(itask->itask_flags & ITASK_KNOWN_TO_LU); 5062 mutex_enter(&w->worker_lock); 5063 if (itask->itask_ncmds >= ITASK_MAX_NCMDS) { 5064 mutex_exit(&w->worker_lock); 5065 return (STMF_BUSY); 5066 } 5067 for (i = 0; i < itask->itask_ncmds; i++) { 5068 if (itask->itask_cmd_stack[i] == ITASK_CMD_POLL_LU) { 5069 mutex_exit(&w->worker_lock); 5070 return (STMF_SUCCESS); 5071 } 5072 } 5073 itask->itask_cmd_stack[itask->itask_ncmds++] = ITASK_CMD_POLL_LU; 5074 if (timeout == ITASK_DEFAULT_POLL_TIMEOUT) { 5075 itask->itask_poll_timeout = ddi_get_lbolt() + 1; 5076 } else { 5077 clock_t t = drv_usectohz(timeout * 1000); 5078 if (t == 0) 5079 t = 1; 5080 itask->itask_poll_timeout = ddi_get_lbolt() + t; 5081 } 5082 if ((itask->itask_flags & ITASK_IN_WORKER_QUEUE) == 0) { 5083 itask->itask_worker_next = NULL; 5084 if (w->worker_task_tail) { 5085 w->worker_task_tail->itask_worker_next = itask; 5086 } else { 5087 w->worker_task_head = itask; 5088 } 5089 w->worker_task_tail = itask; 5090 if (++(w->worker_queue_depth) > w->worker_max_qdepth_pu) { 5091 w->worker_max_qdepth_pu = w->worker_queue_depth; 5092 } 5093 atomic_or_32(&itask->itask_flags, ITASK_IN_WORKER_QUEUE); 5094 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0) 5095 cv_signal(&w->worker_cv); 5096 } 5097 mutex_exit(&w->worker_lock); 5098 return (STMF_SUCCESS); 5099 } 5100 5101 stmf_status_t 5102 stmf_task_poll_lport(scsi_task_t *task, uint32_t timeout) 5103 { 5104 stmf_i_scsi_task_t *itask = (stmf_i_scsi_task_t *) 5105 task->task_stmf_private; 5106 stmf_worker_t *w = itask->itask_worker; 5107 int i; 5108 5109 ASSERT(itask->itask_flags & ITASK_KNOWN_TO_TGT_PORT); 5110 mutex_enter(&w->worker_lock); 5111 if (itask->itask_ncmds >= ITASK_MAX_NCMDS) { 5112 mutex_exit(&w->worker_lock); 5113 return (STMF_BUSY); 5114 } 5115 for (i = 0; i < itask->itask_ncmds; i++) { 5116 if (itask->itask_cmd_stack[i] == ITASK_CMD_POLL_LPORT) { 5117 mutex_exit(&w->worker_lock); 5118 return (STMF_SUCCESS); 5119 } 5120 } 5121 itask->itask_cmd_stack[itask->itask_ncmds++] = ITASK_CMD_POLL_LPORT; 5122 if (timeout == ITASK_DEFAULT_POLL_TIMEOUT) { 5123 itask->itask_poll_timeout = ddi_get_lbolt() + 1; 5124 } else { 5125 clock_t t = drv_usectohz(timeout * 1000); 5126 if (t == 0) 5127 t = 1; 5128 itask->itask_poll_timeout = ddi_get_lbolt() + t; 5129 } 5130 if ((itask->itask_flags & ITASK_IN_WORKER_QUEUE) == 0) { 5131 itask->itask_worker_next = NULL; 5132 if (w->worker_task_tail) { 5133 w->worker_task_tail->itask_worker_next = itask; 5134 } else { 5135 w->worker_task_head = itask; 5136 } 5137 w->worker_task_tail = itask; 5138 if (++(w->worker_queue_depth) > w->worker_max_qdepth_pu) { 5139 w->worker_max_qdepth_pu = w->worker_queue_depth; 5140 } 5141 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0) 5142 cv_signal(&w->worker_cv); 5143 } 5144 mutex_exit(&w->worker_lock); 5145 return (STMF_SUCCESS); 5146 } 5147 5148 void 5149 stmf_do_task_abort(scsi_task_t *task) 5150 { 5151 stmf_i_scsi_task_t *itask = TASK_TO_ITASK(task); 5152 stmf_lu_t *lu; 5153 stmf_local_port_t *lport; 5154 unsigned long long ret; 5155 uint32_t old, new; 5156 uint8_t call_lu_abort, call_port_abort; 5157 char info[STMF_CHANGE_INFO_LEN]; 5158 5159 lu = task->task_lu; 5160 lport = task->task_lport; 5161 do { 5162 old = new = itask->itask_flags; 5163 if ((old & (ITASK_KNOWN_TO_LU | ITASK_LU_ABORT_CALLED)) == 5164 ITASK_KNOWN_TO_LU) { 5165 new |= ITASK_LU_ABORT_CALLED; 5166 call_lu_abort = 1; 5167 } else { 5168 call_lu_abort = 0; 5169 } 5170 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 5171 5172 if (call_lu_abort) { 5173 if ((itask->itask_flags & ITASK_DEFAULT_HANDLING) == 0) { 5174 ret = lu->lu_abort(lu, STMF_LU_ABORT_TASK, task, 0); 5175 } else { 5176 ret = dlun0->lu_abort(lu, STMF_LU_ABORT_TASK, task, 0); 5177 } 5178 if ((ret == STMF_ABORT_SUCCESS) || (ret == STMF_NOT_FOUND)) { 5179 stmf_task_lu_aborted(task, ret, STMF_IOF_LU_DONE); 5180 } else if (ret == STMF_BUSY) { 5181 atomic_and_32(&itask->itask_flags, 5182 ~ITASK_LU_ABORT_CALLED); 5183 } else if (ret != STMF_SUCCESS) { 5184 (void) snprintf(info, sizeof (info), 5185 "Abort failed by LU %p, ret %llx", (void *)lu, ret); 5186 stmf_abort_task_offline(task, 1, info); 5187 } 5188 } else if (itask->itask_flags & ITASK_KNOWN_TO_LU) { 5189 if (ddi_get_lbolt() > (itask->itask_start_time + 5190 STMF_SEC2TICK(lu->lu_abort_timeout? 5191 lu->lu_abort_timeout : ITASK_DEFAULT_ABORT_TIMEOUT))) { 5192 (void) snprintf(info, sizeof (info), 5193 "lu abort timed out"); 5194 stmf_abort_task_offline(itask->itask_task, 1, info); 5195 } 5196 } 5197 5198 do { 5199 old = new = itask->itask_flags; 5200 if ((old & (ITASK_KNOWN_TO_TGT_PORT | 5201 ITASK_TGT_PORT_ABORT_CALLED)) == ITASK_KNOWN_TO_TGT_PORT) { 5202 new |= ITASK_TGT_PORT_ABORT_CALLED; 5203 call_port_abort = 1; 5204 } else { 5205 call_port_abort = 0; 5206 } 5207 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 5208 if (call_port_abort) { 5209 ret = lport->lport_abort(lport, STMF_LPORT_ABORT_TASK, task, 0); 5210 if ((ret == STMF_ABORT_SUCCESS) || (ret == STMF_NOT_FOUND)) { 5211 stmf_task_lport_aborted(task, ret, STMF_IOF_LPORT_DONE); 5212 } else if (ret == STMF_BUSY) { 5213 atomic_and_32(&itask->itask_flags, 5214 ~ITASK_TGT_PORT_ABORT_CALLED); 5215 } else if (ret != STMF_SUCCESS) { 5216 (void) snprintf(info, sizeof (info), 5217 "Abort failed by tgt port %p ret %llx", 5218 (void *)lport, ret); 5219 stmf_abort_task_offline(task, 0, info); 5220 } 5221 } else if (itask->itask_flags & ITASK_KNOWN_TO_TGT_PORT) { 5222 if (ddi_get_lbolt() > (itask->itask_start_time + 5223 STMF_SEC2TICK(lport->lport_abort_timeout? 5224 lport->lport_abort_timeout : 5225 ITASK_DEFAULT_ABORT_TIMEOUT))) { 5226 (void) snprintf(info, sizeof (info), 5227 "lport abort timed out"); 5228 stmf_abort_task_offline(itask->itask_task, 0, info); 5229 } 5230 } 5231 } 5232 5233 stmf_status_t 5234 stmf_ctl(int cmd, void *obj, void *arg) 5235 { 5236 stmf_status_t ret; 5237 stmf_i_lu_t *ilu; 5238 stmf_i_local_port_t *ilport; 5239 stmf_state_change_info_t *ssci = (stmf_state_change_info_t *)arg; 5240 5241 mutex_enter(&stmf_state.stmf_lock); 5242 ret = STMF_INVALID_ARG; 5243 if (cmd & STMF_CMD_LU_OP) { 5244 ilu = stmf_lookup_lu((stmf_lu_t *)obj); 5245 if (ilu == NULL) { 5246 goto stmf_ctl_lock_exit; 5247 } 5248 DTRACE_PROBE3(lu__state__change, 5249 stmf_lu_t *, ilu->ilu_lu, 5250 int, cmd, stmf_state_change_info_t *, ssci); 5251 } else if (cmd & STMF_CMD_LPORT_OP) { 5252 ilport = stmf_lookup_lport((stmf_local_port_t *)obj); 5253 if (ilport == NULL) { 5254 goto stmf_ctl_lock_exit; 5255 } 5256 DTRACE_PROBE3(lport__state__change, 5257 stmf_local_port_t *, ilport->ilport_lport, 5258 int, cmd, stmf_state_change_info_t *, ssci); 5259 } else { 5260 goto stmf_ctl_lock_exit; 5261 } 5262 5263 switch (cmd) { 5264 case STMF_CMD_LU_ONLINE: 5265 switch (ilu->ilu_state) { 5266 case STMF_STATE_OFFLINE: 5267 ret = STMF_SUCCESS; 5268 break; 5269 case STMF_STATE_ONLINE: 5270 case STMF_STATE_ONLINING: 5271 ret = STMF_ALREADY; 5272 break; 5273 case STMF_STATE_OFFLINING: 5274 ret = STMF_BUSY; 5275 break; 5276 default: 5277 ret = STMF_BADSTATE; 5278 break; 5279 } 5280 if (ret != STMF_SUCCESS) 5281 goto stmf_ctl_lock_exit; 5282 5283 ilu->ilu_state = STMF_STATE_ONLINING; 5284 mutex_exit(&stmf_state.stmf_lock); 5285 stmf_svc_queue(cmd, obj, (stmf_state_change_info_t *)arg); 5286 break; 5287 5288 case STMF_CMD_LU_ONLINE_COMPLETE: 5289 if (ilu->ilu_state != STMF_STATE_ONLINING) { 5290 ret = STMF_BADSTATE; 5291 goto stmf_ctl_lock_exit; 5292 } 5293 if (((stmf_change_status_t *)arg)->st_completion_status == 5294 STMF_SUCCESS) { 5295 ilu->ilu_state = STMF_STATE_ONLINE; 5296 mutex_exit(&stmf_state.stmf_lock); 5297 ((stmf_lu_t *)obj)->lu_ctl((stmf_lu_t *)obj, 5298 STMF_ACK_LU_ONLINE_COMPLETE, arg); 5299 mutex_enter(&stmf_state.stmf_lock); 5300 stmf_add_lu_to_active_sessions((stmf_lu_t *)obj); 5301 } else { 5302 /* XXX: should throw a meesage an record more data */ 5303 ilu->ilu_state = STMF_STATE_OFFLINE; 5304 } 5305 ret = STMF_SUCCESS; 5306 goto stmf_ctl_lock_exit; 5307 5308 case STMF_CMD_LU_OFFLINE: 5309 switch (ilu->ilu_state) { 5310 case STMF_STATE_ONLINE: 5311 ret = STMF_SUCCESS; 5312 break; 5313 case STMF_STATE_OFFLINE: 5314 case STMF_STATE_OFFLINING: 5315 ret = STMF_ALREADY; 5316 break; 5317 case STMF_STATE_ONLINING: 5318 ret = STMF_BUSY; 5319 break; 5320 default: 5321 ret = STMF_BADSTATE; 5322 break; 5323 } 5324 if (ret != STMF_SUCCESS) 5325 goto stmf_ctl_lock_exit; 5326 ilu->ilu_state = STMF_STATE_OFFLINING; 5327 mutex_exit(&stmf_state.stmf_lock); 5328 stmf_svc_queue(cmd, obj, (stmf_state_change_info_t *)arg); 5329 break; 5330 5331 case STMF_CMD_LU_OFFLINE_COMPLETE: 5332 if (ilu->ilu_state != STMF_STATE_OFFLINING) { 5333 ret = STMF_BADSTATE; 5334 goto stmf_ctl_lock_exit; 5335 } 5336 if (((stmf_change_status_t *)arg)->st_completion_status == 5337 STMF_SUCCESS) { 5338 ilu->ilu_state = STMF_STATE_OFFLINE; 5339 mutex_exit(&stmf_state.stmf_lock); 5340 ((stmf_lu_t *)obj)->lu_ctl((stmf_lu_t *)obj, 5341 STMF_ACK_LU_OFFLINE_COMPLETE, arg); 5342 mutex_enter(&stmf_state.stmf_lock); 5343 } else { 5344 ilu->ilu_state = STMF_STATE_ONLINE; 5345 stmf_add_lu_to_active_sessions((stmf_lu_t *)obj); 5346 } 5347 mutex_exit(&stmf_state.stmf_lock); 5348 break; 5349 5350 /* 5351 * LPORT_ONLINE/OFFLINE has nothing to do with link offline/online. 5352 * It's related with hardware disable/enable. 5353 */ 5354 case STMF_CMD_LPORT_ONLINE: 5355 switch (ilport->ilport_state) { 5356 case STMF_STATE_OFFLINE: 5357 ret = STMF_SUCCESS; 5358 break; 5359 case STMF_STATE_ONLINE: 5360 case STMF_STATE_ONLINING: 5361 ret = STMF_ALREADY; 5362 break; 5363 case STMF_STATE_OFFLINING: 5364 ret = STMF_BUSY; 5365 break; 5366 default: 5367 ret = STMF_BADSTATE; 5368 break; 5369 } 5370 if (ret != STMF_SUCCESS) 5371 goto stmf_ctl_lock_exit; 5372 5373 /* 5374 * Only user request can recover the port from the 5375 * FORCED_OFFLINE state 5376 */ 5377 if (ilport->ilport_flags & ILPORT_FORCED_OFFLINE) { 5378 if (!(ssci->st_rflags & STMF_RFLAG_USER_REQUEST)) { 5379 ret = STMF_FAILURE; 5380 goto stmf_ctl_lock_exit; 5381 } 5382 } 5383 5384 /* 5385 * Avoid too frequent request to online 5386 */ 5387 if (ssci->st_rflags & STMF_RFLAG_USER_REQUEST) { 5388 ilport->ilport_online_times = 0; 5389 ilport->ilport_avg_interval = 0; 5390 } 5391 if ((ilport->ilport_avg_interval < STMF_AVG_ONLINE_INTERVAL) && 5392 (ilport->ilport_online_times >= 4)) { 5393 ret = STMF_FAILURE; 5394 ilport->ilport_flags |= ILPORT_FORCED_OFFLINE; 5395 stmf_trace(NULL, "stmf_ctl: too frequent request to " 5396 "online the port"); 5397 cmn_err(CE_WARN, "stmf_ctl: too frequent request to " 5398 "online the port, set FORCED_OFFLINE now"); 5399 goto stmf_ctl_lock_exit; 5400 } 5401 if (ilport->ilport_online_times > 0) { 5402 if (ilport->ilport_online_times == 1) { 5403 ilport->ilport_avg_interval = ddi_get_lbolt() - 5404 ilport->ilport_last_online_clock; 5405 } else { 5406 ilport->ilport_avg_interval = 5407 (ilport->ilport_avg_interval + 5408 ddi_get_lbolt() - 5409 ilport->ilport_last_online_clock) >> 1; 5410 } 5411 } 5412 ilport->ilport_last_online_clock = ddi_get_lbolt(); 5413 ilport->ilport_online_times++; 5414 5415 /* 5416 * Submit online service request 5417 */ 5418 ilport->ilport_flags &= ~ILPORT_FORCED_OFFLINE; 5419 ilport->ilport_state = STMF_STATE_ONLINING; 5420 mutex_exit(&stmf_state.stmf_lock); 5421 stmf_svc_queue(cmd, obj, (stmf_state_change_info_t *)arg); 5422 break; 5423 5424 case STMF_CMD_LPORT_ONLINE_COMPLETE: 5425 if (ilport->ilport_state != STMF_STATE_ONLINING) { 5426 ret = STMF_BADSTATE; 5427 goto stmf_ctl_lock_exit; 5428 } 5429 if (((stmf_change_status_t *)arg)->st_completion_status == 5430 STMF_SUCCESS) { 5431 ilport->ilport_state = STMF_STATE_ONLINE; 5432 mutex_exit(&stmf_state.stmf_lock); 5433 ((stmf_local_port_t *)obj)->lport_ctl( 5434 (stmf_local_port_t *)obj, 5435 STMF_ACK_LPORT_ONLINE_COMPLETE, arg); 5436 mutex_enter(&stmf_state.stmf_lock); 5437 } else { 5438 ilport->ilport_state = STMF_STATE_OFFLINE; 5439 } 5440 ret = STMF_SUCCESS; 5441 goto stmf_ctl_lock_exit; 5442 5443 case STMF_CMD_LPORT_OFFLINE: 5444 switch (ilport->ilport_state) { 5445 case STMF_STATE_ONLINE: 5446 ret = STMF_SUCCESS; 5447 break; 5448 case STMF_STATE_OFFLINE: 5449 case STMF_STATE_OFFLINING: 5450 ret = STMF_ALREADY; 5451 break; 5452 case STMF_STATE_ONLINING: 5453 ret = STMF_BUSY; 5454 break; 5455 default: 5456 ret = STMF_BADSTATE; 5457 break; 5458 } 5459 if (ret != STMF_SUCCESS) 5460 goto stmf_ctl_lock_exit; 5461 5462 ilport->ilport_state = STMF_STATE_OFFLINING; 5463 mutex_exit(&stmf_state.stmf_lock); 5464 stmf_svc_queue(cmd, obj, (stmf_state_change_info_t *)arg); 5465 break; 5466 5467 case STMF_CMD_LPORT_OFFLINE_COMPLETE: 5468 if (ilport->ilport_state != STMF_STATE_OFFLINING) { 5469 ret = STMF_BADSTATE; 5470 goto stmf_ctl_lock_exit; 5471 } 5472 if (((stmf_change_status_t *)arg)->st_completion_status == 5473 STMF_SUCCESS) { 5474 ilport->ilport_state = STMF_STATE_OFFLINE; 5475 mutex_exit(&stmf_state.stmf_lock); 5476 ((stmf_local_port_t *)obj)->lport_ctl( 5477 (stmf_local_port_t *)obj, 5478 STMF_ACK_LPORT_OFFLINE_COMPLETE, arg); 5479 mutex_enter(&stmf_state.stmf_lock); 5480 } else { 5481 ilport->ilport_state = STMF_STATE_ONLINE; 5482 } 5483 mutex_exit(&stmf_state.stmf_lock); 5484 break; 5485 5486 default: 5487 cmn_err(CE_WARN, "Invalid ctl cmd received %x", cmd); 5488 ret = STMF_INVALID_ARG; 5489 goto stmf_ctl_lock_exit; 5490 } 5491 5492 return (STMF_SUCCESS); 5493 5494 stmf_ctl_lock_exit:; 5495 mutex_exit(&stmf_state.stmf_lock); 5496 return (ret); 5497 } 5498 5499 /* ARGSUSED */ 5500 stmf_status_t 5501 stmf_info_impl(uint32_t cmd, void *arg1, void *arg2, uint8_t *buf, 5502 uint32_t *bufsizep) 5503 { 5504 return (STMF_NOT_SUPPORTED); 5505 } 5506 5507 /* ARGSUSED */ 5508 stmf_status_t 5509 stmf_info(uint32_t cmd, void *arg1, void *arg2, uint8_t *buf, 5510 uint32_t *bufsizep) 5511 { 5512 uint32_t cl = SI_GET_CLASS(cmd); 5513 5514 if (cl == SI_STMF) { 5515 return (stmf_info_impl(cmd, arg1, arg2, buf, bufsizep)); 5516 } 5517 if (cl == SI_LPORT) { 5518 return (((stmf_local_port_t *)arg1)->lport_info(cmd, arg1, 5519 arg2, buf, bufsizep)); 5520 } else if (cl == SI_LU) { 5521 return (((stmf_lu_t *)arg1)->lu_info(cmd, arg1, arg2, buf, 5522 bufsizep)); 5523 } 5524 5525 return (STMF_NOT_SUPPORTED); 5526 } 5527 5528 /* 5529 * Used by port providers. pwwn is 8 byte wwn, sdid is the devid used by 5530 * stmf to register local ports. The ident should have 20 bytes in buffer 5531 * space to convert the wwn to "wwn.xxxxxxxxxxxxxxxx" string. 5532 */ 5533 void 5534 stmf_wwn_to_devid_desc(scsi_devid_desc_t *sdid, uint8_t *wwn, 5535 uint8_t protocol_id) 5536 { 5537 char wwn_str[20+1]; 5538 5539 sdid->protocol_id = protocol_id; 5540 sdid->piv = 1; 5541 sdid->code_set = CODE_SET_ASCII; 5542 sdid->association = ID_IS_TARGET_PORT; 5543 sdid->ident_length = 20; 5544 /* Convert wwn value to "wwn.XXXXXXXXXXXXXXXX" format */ 5545 (void) snprintf(wwn_str, sizeof (wwn_str), 5546 "wwn.%02X%02X%02X%02X%02X%02X%02X%02X", 5547 wwn[0], wwn[1], wwn[2], wwn[3], wwn[4], wwn[5], wwn[6], wwn[7]); 5548 bcopy(wwn_str, (char *)sdid->ident, 20); 5549 } 5550 5551 5552 stmf_xfer_data_t * 5553 stmf_prepare_tpgs_data(uint8_t ilu_alua) 5554 { 5555 stmf_xfer_data_t *xd; 5556 stmf_i_local_port_t *ilport; 5557 uint8_t *p; 5558 uint32_t sz, asz, nports = 0, nports_standby = 0; 5559 5560 mutex_enter(&stmf_state.stmf_lock); 5561 /* check if any ports are standby and create second group */ 5562 for (ilport = stmf_state.stmf_ilportlist; ilport; 5563 ilport = ilport->ilport_next) { 5564 if (ilport->ilport_standby == 1) { 5565 nports_standby++; 5566 } else { 5567 nports++; 5568 } 5569 } 5570 5571 /* The spec only allows for 255 ports to be reported per group */ 5572 nports = min(nports, 255); 5573 nports_standby = min(nports_standby, 255); 5574 sz = (nports * 4) + 12; 5575 if (nports_standby && ilu_alua) { 5576 sz += (nports_standby * 4) + 8; 5577 } 5578 asz = sz + sizeof (*xd) - 4; 5579 xd = (stmf_xfer_data_t *)kmem_zalloc(asz, KM_NOSLEEP); 5580 if (xd == NULL) { 5581 mutex_exit(&stmf_state.stmf_lock); 5582 return (NULL); 5583 } 5584 xd->alloc_size = asz; 5585 xd->size_left = sz; 5586 5587 p = xd->buf; 5588 5589 *((uint32_t *)p) = BE_32(sz - 4); 5590 p += 4; 5591 p[0] = 0x80; /* PREF */ 5592 p[1] = 5; /* AO_SUP, S_SUP */ 5593 if (stmf_state.stmf_alua_node == 1) { 5594 p[3] = 1; /* Group 1 */ 5595 } else { 5596 p[3] = 0; /* Group 0 */ 5597 } 5598 p[7] = nports & 0xff; 5599 p += 8; 5600 for (ilport = stmf_state.stmf_ilportlist; ilport; 5601 ilport = ilport->ilport_next) { 5602 if (ilport->ilport_standby == 1) { 5603 continue; 5604 } 5605 ((uint16_t *)p)[1] = BE_16(ilport->ilport_rtpid); 5606 p += 4; 5607 } 5608 if (nports_standby && ilu_alua) { 5609 p[0] = 0x02; /* Non PREF, Standby */ 5610 p[1] = 5; /* AO_SUP, S_SUP */ 5611 if (stmf_state.stmf_alua_node == 1) { 5612 p[3] = 0; /* Group 0 */ 5613 } else { 5614 p[3] = 1; /* Group 1 */ 5615 } 5616 p[7] = nports_standby & 0xff; 5617 p += 8; 5618 for (ilport = stmf_state.stmf_ilportlist; ilport; 5619 ilport = ilport->ilport_next) { 5620 if (ilport->ilport_standby == 0) { 5621 continue; 5622 } 5623 ((uint16_t *)p)[1] = BE_16(ilport->ilport_rtpid); 5624 p += 4; 5625 } 5626 } 5627 5628 mutex_exit(&stmf_state.stmf_lock); 5629 5630 return (xd); 5631 } 5632 5633 struct scsi_devid_desc * 5634 stmf_scsilib_get_devid_desc(uint16_t rtpid) 5635 { 5636 scsi_devid_desc_t *devid = NULL; 5637 stmf_i_local_port_t *ilport; 5638 5639 mutex_enter(&stmf_state.stmf_lock); 5640 5641 for (ilport = stmf_state.stmf_ilportlist; ilport; 5642 ilport = ilport->ilport_next) { 5643 if (ilport->ilport_rtpid == rtpid) { 5644 scsi_devid_desc_t *id = ilport->ilport_lport->lport_id; 5645 uint32_t id_sz = sizeof (scsi_devid_desc_t) + 5646 id->ident_length; 5647 devid = (scsi_devid_desc_t *)kmem_zalloc(id_sz, 5648 KM_NOSLEEP); 5649 if (devid != NULL) { 5650 bcopy(id, devid, id_sz); 5651 } 5652 break; 5653 } 5654 } 5655 5656 mutex_exit(&stmf_state.stmf_lock); 5657 return (devid); 5658 } 5659 5660 uint16_t 5661 stmf_scsilib_get_lport_rtid(struct scsi_devid_desc *devid) 5662 { 5663 stmf_i_local_port_t *ilport; 5664 scsi_devid_desc_t *id; 5665 uint16_t rtpid = 0; 5666 5667 mutex_enter(&stmf_state.stmf_lock); 5668 for (ilport = stmf_state.stmf_ilportlist; ilport; 5669 ilport = ilport->ilport_next) { 5670 id = ilport->ilport_lport->lport_id; 5671 if ((devid->ident_length == id->ident_length) && 5672 (memcmp(devid->ident, id->ident, id->ident_length) == 0)) { 5673 rtpid = ilport->ilport_rtpid; 5674 break; 5675 } 5676 } 5677 mutex_exit(&stmf_state.stmf_lock); 5678 return (rtpid); 5679 } 5680 5681 static uint16_t stmf_lu_id_gen_number = 0; 5682 5683 stmf_status_t 5684 stmf_scsilib_uniq_lu_id(uint32_t company_id, scsi_devid_desc_t *lu_id) 5685 { 5686 return (stmf_scsilib_uniq_lu_id2(company_id, 0, lu_id)); 5687 } 5688 5689 stmf_status_t 5690 stmf_scsilib_uniq_lu_id2(uint32_t company_id, uint32_t host_id, 5691 scsi_devid_desc_t *lu_id) 5692 { 5693 uint8_t *p; 5694 struct timeval32 timestamp32; 5695 uint32_t *t = (uint32_t *)×tamp32; 5696 struct ether_addr mac; 5697 uint8_t *e = (uint8_t *)&mac; 5698 int hid = (int)host_id; 5699 uint16_t gen_number; 5700 5701 if (company_id == COMPANY_ID_NONE) 5702 company_id = COMPANY_ID_SUN; 5703 5704 if (lu_id->ident_length != 0x10) 5705 return (STMF_INVALID_ARG); 5706 5707 p = (uint8_t *)lu_id; 5708 5709 gen_number = atomic_inc_16_nv(&stmf_lu_id_gen_number); 5710 5711 p[0] = 0xf1; p[1] = 3; p[2] = 0; p[3] = 0x10; 5712 p[4] = ((company_id >> 20) & 0xf) | 0x60; 5713 p[5] = (company_id >> 12) & 0xff; 5714 p[6] = (company_id >> 4) & 0xff; 5715 p[7] = (company_id << 4) & 0xf0; 5716 if (hid == 0 && !localetheraddr((struct ether_addr *)NULL, &mac)) { 5717 hid = BE_32((int)zone_get_hostid(NULL)); 5718 } 5719 if (hid != 0) { 5720 e[0] = (hid >> 24) & 0xff; 5721 e[1] = (hid >> 16) & 0xff; 5722 e[2] = (hid >> 8) & 0xff; 5723 e[3] = hid & 0xff; 5724 e[4] = e[5] = 0; 5725 } 5726 bcopy(e, p+8, 6); 5727 uniqtime32(×tamp32); 5728 *t = BE_32(*t); 5729 bcopy(t, p+14, 4); 5730 p[18] = (gen_number >> 8) & 0xff; 5731 p[19] = gen_number & 0xff; 5732 5733 return (STMF_SUCCESS); 5734 } 5735 5736 /* 5737 * saa is sense key, ASC, ASCQ 5738 */ 5739 void 5740 stmf_scsilib_send_status(scsi_task_t *task, uint8_t st, uint32_t saa) 5741 { 5742 uint8_t sd[18]; 5743 task->task_scsi_status = st; 5744 if (st == 2) { 5745 bzero(sd, 18); 5746 sd[0] = 0x70; 5747 sd[2] = (saa >> 16) & 0xf; 5748 sd[7] = 10; 5749 sd[12] = (saa >> 8) & 0xff; 5750 sd[13] = saa & 0xff; 5751 task->task_sense_data = sd; 5752 task->task_sense_length = 18; 5753 } else { 5754 task->task_sense_data = NULL; 5755 task->task_sense_length = 0; 5756 } 5757 (void) stmf_send_scsi_status(task, STMF_IOF_LU_DONE); 5758 } 5759 5760 uint32_t 5761 stmf_scsilib_prepare_vpd_page83(scsi_task_t *task, uint8_t *page, 5762 uint32_t page_len, uint8_t byte0, uint32_t vpd_mask) 5763 { 5764 uint8_t *p = NULL; 5765 uint8_t small_buf[32]; 5766 uint32_t sz = 0; 5767 uint32_t n = 4; 5768 uint32_t m = 0; 5769 uint32_t last_bit = 0; 5770 5771 if (page_len < 4) 5772 return (0); 5773 if (page_len > 65535) 5774 page_len = 65535; 5775 5776 page[0] = byte0; 5777 page[1] = 0x83; 5778 5779 /* CONSTCOND */ 5780 while (1) { 5781 m += sz; 5782 if (sz && (page_len > n)) { 5783 uint32_t copysz; 5784 copysz = page_len > (n + sz) ? sz : page_len - n; 5785 bcopy(p, page + n, copysz); 5786 n += copysz; 5787 } 5788 vpd_mask &= ~last_bit; 5789 if (vpd_mask == 0) 5790 break; 5791 5792 if (vpd_mask & STMF_VPD_LU_ID) { 5793 last_bit = STMF_VPD_LU_ID; 5794 sz = task->task_lu->lu_id->ident_length + 4; 5795 p = (uint8_t *)task->task_lu->lu_id; 5796 continue; 5797 } else if (vpd_mask & STMF_VPD_TARGET_ID) { 5798 last_bit = STMF_VPD_TARGET_ID; 5799 sz = task->task_lport->lport_id->ident_length + 4; 5800 p = (uint8_t *)task->task_lport->lport_id; 5801 continue; 5802 } else if (vpd_mask & STMF_VPD_TP_GROUP) { 5803 stmf_i_local_port_t *ilport; 5804 last_bit = STMF_VPD_TP_GROUP; 5805 p = small_buf; 5806 bzero(p, 8); 5807 p[0] = 1; 5808 p[1] = 0x15; 5809 p[3] = 4; 5810 ilport = (stmf_i_local_port_t *) 5811 task->task_lport->lport_stmf_private; 5812 /* 5813 * If we're in alua mode, group 1 contains all alua 5814 * participating ports and all standby ports 5815 * > 255. Otherwise, if we're in alua mode, any local 5816 * ports (non standby/pppt) are also in group 1 if the 5817 * alua node is 1. Otherwise the group is 0. 5818 */ 5819 if ((stmf_state.stmf_alua_state && 5820 (ilport->ilport_alua || ilport->ilport_standby) && 5821 ilport->ilport_rtpid > 255) || 5822 (stmf_state.stmf_alua_node == 1 && 5823 ilport->ilport_standby != 1)) { 5824 p[7] = 1; /* Group 1 */ 5825 } 5826 sz = 8; 5827 continue; 5828 } else if (vpd_mask & STMF_VPD_RELATIVE_TP_ID) { 5829 stmf_i_local_port_t *ilport; 5830 5831 last_bit = STMF_VPD_RELATIVE_TP_ID; 5832 p = small_buf; 5833 bzero(p, 8); 5834 p[0] = 1; 5835 p[1] = 0x14; 5836 p[3] = 4; 5837 ilport = (stmf_i_local_port_t *) 5838 task->task_lport->lport_stmf_private; 5839 p[6] = (ilport->ilport_rtpid >> 8) & 0xff; 5840 p[7] = ilport->ilport_rtpid & 0xff; 5841 sz = 8; 5842 continue; 5843 } else { 5844 cmn_err(CE_WARN, "Invalid vpd_mask"); 5845 break; 5846 } 5847 } 5848 5849 page[2] = (m >> 8) & 0xff; 5850 page[3] = m & 0xff; 5851 5852 return (n); 5853 } 5854 5855 void 5856 stmf_scsilib_handle_report_tpgs(scsi_task_t *task, stmf_data_buf_t *dbuf) 5857 { 5858 stmf_i_scsi_task_t *itask = 5859 (stmf_i_scsi_task_t *)task->task_stmf_private; 5860 stmf_i_lu_t *ilu = 5861 (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 5862 stmf_xfer_data_t *xd; 5863 uint32_t sz, minsz; 5864 5865 itask->itask_flags |= ITASK_DEFAULT_HANDLING; 5866 task->task_cmd_xfer_length = 5867 ((((uint32_t)task->task_cdb[6]) << 24) | 5868 (((uint32_t)task->task_cdb[7]) << 16) | 5869 (((uint32_t)task->task_cdb[8]) << 8) | 5870 ((uint32_t)task->task_cdb[9])); 5871 5872 if (task->task_additional_flags & 5873 TASK_AF_NO_EXPECTED_XFER_LENGTH) { 5874 task->task_expected_xfer_length = 5875 task->task_cmd_xfer_length; 5876 } 5877 5878 if (task->task_cmd_xfer_length == 0) { 5879 stmf_scsilib_send_status(task, STATUS_GOOD, 0); 5880 return; 5881 } 5882 if (task->task_cmd_xfer_length < 4) { 5883 stmf_scsilib_send_status(task, STATUS_CHECK, 5884 STMF_SAA_INVALID_FIELD_IN_CDB); 5885 return; 5886 } 5887 5888 sz = min(task->task_expected_xfer_length, 5889 task->task_cmd_xfer_length); 5890 5891 xd = stmf_prepare_tpgs_data(ilu->ilu_alua); 5892 5893 if (xd == NULL) { 5894 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 5895 STMF_ALLOC_FAILURE, NULL); 5896 return; 5897 } 5898 5899 sz = min(sz, xd->size_left); 5900 xd->size_left = sz; 5901 minsz = min(512, sz); 5902 5903 if (dbuf == NULL) 5904 dbuf = stmf_alloc_dbuf(task, sz, &minsz, 0); 5905 if (dbuf == NULL) { 5906 kmem_free(xd, xd->alloc_size); 5907 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 5908 STMF_ALLOC_FAILURE, NULL); 5909 return; 5910 } 5911 dbuf->db_lu_private = xd; 5912 stmf_xd_to_dbuf(dbuf, 1); 5913 5914 dbuf->db_flags = DB_DIRECTION_TO_RPORT; 5915 (void) stmf_xfer_data(task, dbuf, 0); 5916 5917 } 5918 5919 void 5920 stmf_scsilib_handle_task_mgmt(scsi_task_t *task) 5921 { 5922 5923 switch (task->task_mgmt_function) { 5924 /* 5925 * For now we will abort all I/Os on the LU in case of ABORT_TASK_SET 5926 * and ABORT_TASK. But unlike LUN_RESET we will not reset LU state 5927 * in these cases. This needs to be changed to abort only the required 5928 * set. 5929 */ 5930 case TM_ABORT_TASK: 5931 case TM_ABORT_TASK_SET: 5932 case TM_CLEAR_TASK_SET: 5933 case TM_LUN_RESET: 5934 stmf_handle_lun_reset(task); 5935 /* issue the reset to the proxy node as well */ 5936 if (stmf_state.stmf_alua_state == 1) { 5937 (void) stmf_proxy_scsi_cmd(task, NULL); 5938 } 5939 return; 5940 case TM_TARGET_RESET: 5941 case TM_TARGET_COLD_RESET: 5942 case TM_TARGET_WARM_RESET: 5943 stmf_handle_target_reset(task); 5944 return; 5945 default: 5946 /* We dont support this task mgmt function */ 5947 stmf_scsilib_send_status(task, STATUS_CHECK, 5948 STMF_SAA_INVALID_FIELD_IN_CMD_IU); 5949 return; 5950 } 5951 } 5952 5953 void 5954 stmf_handle_lun_reset(scsi_task_t *task) 5955 { 5956 stmf_i_scsi_task_t *itask; 5957 stmf_i_lu_t *ilu; 5958 5959 itask = (stmf_i_scsi_task_t *)task->task_stmf_private; 5960 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 5961 5962 /* 5963 * To sync with target reset, grab this lock. The LU is not going 5964 * anywhere as there is atleast one task pending (this task). 5965 */ 5966 mutex_enter(&stmf_state.stmf_lock); 5967 5968 if (ilu->ilu_flags & ILU_RESET_ACTIVE) { 5969 mutex_exit(&stmf_state.stmf_lock); 5970 stmf_scsilib_send_status(task, STATUS_CHECK, 5971 STMF_SAA_OPERATION_IN_PROGRESS); 5972 return; 5973 } 5974 atomic_or_32(&ilu->ilu_flags, ILU_RESET_ACTIVE); 5975 mutex_exit(&stmf_state.stmf_lock); 5976 5977 /* 5978 * Mark this task as the one causing LU reset so that we know who 5979 * was responsible for setting the ILU_RESET_ACTIVE. In case this 5980 * task itself gets aborted, we will clear ILU_RESET_ACTIVE. 5981 */ 5982 itask->itask_flags |= ITASK_DEFAULT_HANDLING | ITASK_CAUSING_LU_RESET; 5983 5984 /* Initiatiate abort on all commands on this LU except this one */ 5985 stmf_abort(STMF_QUEUE_ABORT_LU, task, STMF_ABORTED, task->task_lu); 5986 5987 /* Start polling on this task */ 5988 if (stmf_task_poll_lu(task, ITASK_DEFAULT_POLL_TIMEOUT) 5989 != STMF_SUCCESS) { 5990 stmf_abort(STMF_QUEUE_TASK_ABORT, task, STMF_ALLOC_FAILURE, 5991 NULL); 5992 return; 5993 } 5994 } 5995 5996 void 5997 stmf_handle_target_reset(scsi_task_t *task) 5998 { 5999 stmf_i_scsi_task_t *itask; 6000 stmf_i_lu_t *ilu; 6001 stmf_i_scsi_session_t *iss; 6002 stmf_lun_map_t *lm; 6003 stmf_lun_map_ent_t *lm_ent; 6004 int i, lf; 6005 6006 itask = (stmf_i_scsi_task_t *)task->task_stmf_private; 6007 iss = (stmf_i_scsi_session_t *)task->task_session->ss_stmf_private; 6008 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 6009 6010 /* 6011 * To sync with LUN reset, grab this lock. The session is not going 6012 * anywhere as there is atleast one task pending (this task). 6013 */ 6014 mutex_enter(&stmf_state.stmf_lock); 6015 6016 /* Grab the session lock as a writer to prevent any changes in it */ 6017 rw_enter(iss->iss_lockp, RW_WRITER); 6018 6019 if (iss->iss_flags & ISS_RESET_ACTIVE) { 6020 rw_exit(iss->iss_lockp); 6021 mutex_exit(&stmf_state.stmf_lock); 6022 stmf_scsilib_send_status(task, STATUS_CHECK, 6023 STMF_SAA_OPERATION_IN_PROGRESS); 6024 return; 6025 } 6026 atomic_or_32(&iss->iss_flags, ISS_RESET_ACTIVE); 6027 6028 /* 6029 * Now go through each LUN in this session and make sure all of them 6030 * can be reset. 6031 */ 6032 lm = iss->iss_sm; 6033 for (i = 0, lf = 0; i < lm->lm_nentries; i++) { 6034 if (lm->lm_plus[i] == NULL) 6035 continue; 6036 lf++; 6037 lm_ent = (stmf_lun_map_ent_t *)lm->lm_plus[i]; 6038 ilu = (stmf_i_lu_t *)(lm_ent->ent_lu->lu_stmf_private); 6039 if (ilu->ilu_flags & ILU_RESET_ACTIVE) { 6040 atomic_and_32(&iss->iss_flags, ~ISS_RESET_ACTIVE); 6041 rw_exit(iss->iss_lockp); 6042 mutex_exit(&stmf_state.stmf_lock); 6043 stmf_scsilib_send_status(task, STATUS_CHECK, 6044 STMF_SAA_OPERATION_IN_PROGRESS); 6045 return; 6046 } 6047 } 6048 if (lf == 0) { 6049 /* No luns in this session */ 6050 atomic_and_32(&iss->iss_flags, ~ISS_RESET_ACTIVE); 6051 rw_exit(iss->iss_lockp); 6052 mutex_exit(&stmf_state.stmf_lock); 6053 stmf_scsilib_send_status(task, STATUS_GOOD, 0); 6054 return; 6055 } 6056 6057 /* ok, start the damage */ 6058 itask->itask_flags |= ITASK_DEFAULT_HANDLING | 6059 ITASK_CAUSING_TARGET_RESET; 6060 for (i = 0; i < lm->lm_nentries; i++) { 6061 if (lm->lm_plus[i] == NULL) 6062 continue; 6063 lm_ent = (stmf_lun_map_ent_t *)lm->lm_plus[i]; 6064 ilu = (stmf_i_lu_t *)(lm_ent->ent_lu->lu_stmf_private); 6065 atomic_or_32(&ilu->ilu_flags, ILU_RESET_ACTIVE); 6066 } 6067 6068 for (i = 0; i < lm->lm_nentries; i++) { 6069 if (lm->lm_plus[i] == NULL) 6070 continue; 6071 lm_ent = (stmf_lun_map_ent_t *)lm->lm_plus[i]; 6072 stmf_abort(STMF_QUEUE_ABORT_LU, task, STMF_ABORTED, 6073 lm_ent->ent_lu); 6074 } 6075 6076 rw_exit(iss->iss_lockp); 6077 mutex_exit(&stmf_state.stmf_lock); 6078 6079 /* Start polling on this task */ 6080 if (stmf_task_poll_lu(task, ITASK_DEFAULT_POLL_TIMEOUT) 6081 != STMF_SUCCESS) { 6082 stmf_abort(STMF_QUEUE_TASK_ABORT, task, STMF_ALLOC_FAILURE, 6083 NULL); 6084 return; 6085 } 6086 } 6087 6088 int 6089 stmf_handle_cmd_during_ic(stmf_i_scsi_task_t *itask) 6090 { 6091 scsi_task_t *task = itask->itask_task; 6092 stmf_i_scsi_session_t *iss = (stmf_i_scsi_session_t *) 6093 task->task_session->ss_stmf_private; 6094 6095 rw_enter(iss->iss_lockp, RW_WRITER); 6096 if (((iss->iss_flags & ISS_LUN_INVENTORY_CHANGED) == 0) || 6097 (task->task_cdb[0] == SCMD_INQUIRY)) { 6098 rw_exit(iss->iss_lockp); 6099 return (0); 6100 } 6101 atomic_and_32(&iss->iss_flags, 6102 ~(ISS_LUN_INVENTORY_CHANGED | ISS_GOT_INITIAL_LUNS)); 6103 rw_exit(iss->iss_lockp); 6104 6105 if (task->task_cdb[0] == SCMD_REPORT_LUNS) { 6106 return (0); 6107 } 6108 stmf_scsilib_send_status(task, STATUS_CHECK, 6109 STMF_SAA_REPORT_LUN_DATA_HAS_CHANGED); 6110 return (1); 6111 } 6112 6113 void 6114 stmf_worker_init() 6115 { 6116 uint32_t i; 6117 6118 /* Make local copy of global tunables */ 6119 stmf_i_max_nworkers = stmf_max_nworkers; 6120 stmf_i_min_nworkers = stmf_min_nworkers; 6121 6122 ASSERT(stmf_workers == NULL); 6123 if (stmf_i_min_nworkers < 4) { 6124 stmf_i_min_nworkers = 4; 6125 } 6126 if (stmf_i_max_nworkers < stmf_i_min_nworkers) { 6127 stmf_i_max_nworkers = stmf_i_min_nworkers; 6128 } 6129 stmf_workers = (stmf_worker_t *)kmem_zalloc( 6130 sizeof (stmf_worker_t) * stmf_i_max_nworkers, KM_SLEEP); 6131 for (i = 0; i < stmf_i_max_nworkers; i++) { 6132 stmf_worker_t *w = &stmf_workers[i]; 6133 mutex_init(&w->worker_lock, NULL, MUTEX_DRIVER, NULL); 6134 cv_init(&w->worker_cv, NULL, CV_DRIVER, NULL); 6135 } 6136 stmf_worker_mgmt_delay = drv_usectohz(20 * 1000); 6137 stmf_workers_state = STMF_WORKERS_ENABLED; 6138 6139 /* Workers will be started by stmf_worker_mgmt() */ 6140 6141 /* Lets wait for atleast one worker to start */ 6142 while (stmf_nworkers_cur == 0) 6143 delay(drv_usectohz(20 * 1000)); 6144 stmf_worker_mgmt_delay = drv_usectohz(3 * 1000 * 1000); 6145 } 6146 6147 stmf_status_t 6148 stmf_worker_fini() 6149 { 6150 int i; 6151 clock_t sb; 6152 6153 if (stmf_workers_state == STMF_WORKERS_DISABLED) 6154 return (STMF_SUCCESS); 6155 ASSERT(stmf_workers); 6156 stmf_workers_state = STMF_WORKERS_DISABLED; 6157 stmf_worker_mgmt_delay = drv_usectohz(20 * 1000); 6158 cv_signal(&stmf_state.stmf_cv); 6159 6160 sb = ddi_get_lbolt() + drv_usectohz(10 * 1000 * 1000); 6161 /* Wait for all the threads to die */ 6162 while (stmf_nworkers_cur != 0) { 6163 if (ddi_get_lbolt() > sb) { 6164 stmf_workers_state = STMF_WORKERS_ENABLED; 6165 return (STMF_BUSY); 6166 } 6167 delay(drv_usectohz(100 * 1000)); 6168 } 6169 for (i = 0; i < stmf_i_max_nworkers; i++) { 6170 stmf_worker_t *w = &stmf_workers[i]; 6171 mutex_destroy(&w->worker_lock); 6172 cv_destroy(&w->worker_cv); 6173 } 6174 kmem_free(stmf_workers, sizeof (stmf_worker_t) * stmf_i_max_nworkers); 6175 stmf_workers = NULL; 6176 6177 return (STMF_SUCCESS); 6178 } 6179 6180 void 6181 stmf_worker_task(void *arg) 6182 { 6183 stmf_worker_t *w; 6184 stmf_i_scsi_session_t *iss; 6185 scsi_task_t *task; 6186 stmf_i_scsi_task_t *itask; 6187 stmf_data_buf_t *dbuf; 6188 stmf_lu_t *lu; 6189 clock_t wait_timer = 0; 6190 clock_t wait_ticks, wait_delta = 0; 6191 uint32_t old, new; 6192 uint8_t curcmd; 6193 uint8_t abort_free; 6194 uint8_t wait_queue; 6195 uint8_t dec_qdepth; 6196 6197 w = (stmf_worker_t *)arg; 6198 wait_ticks = drv_usectohz(10000); 6199 6200 DTRACE_PROBE1(worker__create, stmf_worker_t, w); 6201 mutex_enter(&w->worker_lock); 6202 w->worker_flags |= STMF_WORKER_STARTED | STMF_WORKER_ACTIVE; 6203 stmf_worker_loop:; 6204 if ((w->worker_ref_count == 0) && 6205 (w->worker_flags & STMF_WORKER_TERMINATE)) { 6206 w->worker_flags &= ~(STMF_WORKER_STARTED | 6207 STMF_WORKER_ACTIVE | STMF_WORKER_TERMINATE); 6208 w->worker_tid = NULL; 6209 mutex_exit(&w->worker_lock); 6210 DTRACE_PROBE1(worker__destroy, stmf_worker_t, w); 6211 thread_exit(); 6212 } 6213 /* CONSTCOND */ 6214 while (1) { 6215 dec_qdepth = 0; 6216 if (wait_timer && (ddi_get_lbolt() >= wait_timer)) { 6217 wait_timer = 0; 6218 wait_delta = 0; 6219 if (w->worker_wait_head) { 6220 ASSERT(w->worker_wait_tail); 6221 if (w->worker_task_head == NULL) 6222 w->worker_task_head = 6223 w->worker_wait_head; 6224 else 6225 w->worker_task_tail->itask_worker_next = 6226 w->worker_wait_head; 6227 w->worker_task_tail = w->worker_wait_tail; 6228 w->worker_wait_head = w->worker_wait_tail = 6229 NULL; 6230 } 6231 } 6232 if ((itask = w->worker_task_head) == NULL) { 6233 break; 6234 } 6235 task = itask->itask_task; 6236 DTRACE_PROBE2(worker__active, stmf_worker_t, w, 6237 scsi_task_t *, task); 6238 w->worker_task_head = itask->itask_worker_next; 6239 if (w->worker_task_head == NULL) 6240 w->worker_task_tail = NULL; 6241 6242 wait_queue = 0; 6243 abort_free = 0; 6244 if (itask->itask_ncmds > 0) { 6245 curcmd = itask->itask_cmd_stack[itask->itask_ncmds - 1]; 6246 } else { 6247 ASSERT(itask->itask_flags & ITASK_BEING_ABORTED); 6248 } 6249 do { 6250 old = itask->itask_flags; 6251 if (old & ITASK_BEING_ABORTED) { 6252 itask->itask_ncmds = 1; 6253 curcmd = itask->itask_cmd_stack[0] = 6254 ITASK_CMD_ABORT; 6255 goto out_itask_flag_loop; 6256 } else if ((curcmd & ITASK_CMD_MASK) == 6257 ITASK_CMD_NEW_TASK) { 6258 /* 6259 * set ITASK_KSTAT_IN_RUNQ, this flag 6260 * will not reset until task completed 6261 */ 6262 new = old | ITASK_KNOWN_TO_LU | 6263 ITASK_KSTAT_IN_RUNQ; 6264 } else { 6265 goto out_itask_flag_loop; 6266 } 6267 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 6268 6269 out_itask_flag_loop: 6270 6271 /* 6272 * Decide if this task needs to go to a queue and/or if 6273 * we can decrement the itask_cmd_stack. 6274 */ 6275 if (curcmd == ITASK_CMD_ABORT) { 6276 if (itask->itask_flags & (ITASK_KNOWN_TO_LU | 6277 ITASK_KNOWN_TO_TGT_PORT)) { 6278 wait_queue = 1; 6279 } else { 6280 abort_free = 1; 6281 } 6282 } else if ((curcmd & ITASK_CMD_POLL) && 6283 (itask->itask_poll_timeout > ddi_get_lbolt())) { 6284 wait_queue = 1; 6285 } 6286 6287 if (wait_queue) { 6288 itask->itask_worker_next = NULL; 6289 if (w->worker_wait_tail) { 6290 w->worker_wait_tail->itask_worker_next = itask; 6291 } else { 6292 w->worker_wait_head = itask; 6293 } 6294 w->worker_wait_tail = itask; 6295 if (wait_timer == 0) { 6296 wait_timer = ddi_get_lbolt() + wait_ticks; 6297 wait_delta = wait_ticks; 6298 } 6299 } else if ((--(itask->itask_ncmds)) != 0) { 6300 itask->itask_worker_next = NULL; 6301 if (w->worker_task_tail) { 6302 w->worker_task_tail->itask_worker_next = itask; 6303 } else { 6304 w->worker_task_head = itask; 6305 } 6306 w->worker_task_tail = itask; 6307 } else { 6308 atomic_and_32(&itask->itask_flags, 6309 ~ITASK_IN_WORKER_QUEUE); 6310 /* 6311 * This is where the queue depth should go down by 6312 * one but we delay that on purpose to account for 6313 * the call into the provider. The actual decrement 6314 * happens after the worker has done its job. 6315 */ 6316 dec_qdepth = 1; 6317 itask->itask_waitq_time += 6318 gethrtime() - itask->itask_waitq_enter_timestamp; 6319 } 6320 6321 /* We made it here means we are going to call LU */ 6322 if ((itask->itask_flags & ITASK_DEFAULT_HANDLING) == 0) 6323 lu = task->task_lu; 6324 else 6325 lu = dlun0; 6326 dbuf = itask->itask_dbufs[ITASK_CMD_BUF_NDX(curcmd)]; 6327 mutex_exit(&w->worker_lock); 6328 curcmd &= ITASK_CMD_MASK; 6329 stmf_task_audit(itask, TE_PROCESS_CMD, curcmd, dbuf); 6330 switch (curcmd) { 6331 case ITASK_CMD_NEW_TASK: 6332 iss = (stmf_i_scsi_session_t *) 6333 task->task_session->ss_stmf_private; 6334 stmf_itl_lu_new_task(itask); 6335 if (iss->iss_flags & ISS_LUN_INVENTORY_CHANGED) { 6336 if (stmf_handle_cmd_during_ic(itask)) 6337 break; 6338 } 6339 #ifdef DEBUG 6340 if (stmf_drop_task_counter > 0) { 6341 if (atomic_dec_32_nv(&stmf_drop_task_counter) 6342 == 1) 6343 break; 6344 } 6345 #endif 6346 DTRACE_PROBE1(scsi__task__start, scsi_task_t *, task); 6347 lu->lu_new_task(task, dbuf); 6348 break; 6349 case ITASK_CMD_DATA_XFER_DONE: 6350 lu->lu_dbuf_xfer_done(task, dbuf); 6351 break; 6352 case ITASK_CMD_STATUS_DONE: 6353 lu->lu_send_status_done(task); 6354 break; 6355 case ITASK_CMD_ABORT: 6356 if (abort_free) { 6357 stmf_task_free(task); 6358 } else { 6359 stmf_do_task_abort(task); 6360 } 6361 break; 6362 case ITASK_CMD_POLL_LU: 6363 if (!wait_queue) { 6364 lu->lu_task_poll(task); 6365 } 6366 break; 6367 case ITASK_CMD_POLL_LPORT: 6368 if (!wait_queue) 6369 task->task_lport->lport_task_poll(task); 6370 break; 6371 case ITASK_CMD_SEND_STATUS: 6372 /* case ITASK_CMD_XFER_DATA: */ 6373 break; 6374 } 6375 mutex_enter(&w->worker_lock); 6376 if (dec_qdepth) { 6377 w->worker_queue_depth--; 6378 } 6379 } 6380 if ((w->worker_flags & STMF_WORKER_TERMINATE) && (wait_timer == 0)) { 6381 if (w->worker_ref_count == 0) 6382 goto stmf_worker_loop; 6383 else { 6384 wait_timer = ddi_get_lbolt() + 1; 6385 wait_delta = 1; 6386 } 6387 } 6388 w->worker_flags &= ~STMF_WORKER_ACTIVE; 6389 if (wait_timer) { 6390 DTRACE_PROBE1(worker__timed__sleep, stmf_worker_t, w); 6391 (void) cv_reltimedwait(&w->worker_cv, &w->worker_lock, 6392 wait_delta, TR_CLOCK_TICK); 6393 } else { 6394 DTRACE_PROBE1(worker__sleep, stmf_worker_t, w); 6395 cv_wait(&w->worker_cv, &w->worker_lock); 6396 } 6397 DTRACE_PROBE1(worker__wakeup, stmf_worker_t, w); 6398 w->worker_flags |= STMF_WORKER_ACTIVE; 6399 goto stmf_worker_loop; 6400 } 6401 6402 void 6403 stmf_worker_mgmt() 6404 { 6405 int i; 6406 int workers_needed; 6407 uint32_t qd; 6408 clock_t tps, d = 0; 6409 uint32_t cur_max_ntasks = 0; 6410 stmf_worker_t *w; 6411 6412 /* Check if we are trying to increase the # of threads */ 6413 for (i = stmf_nworkers_cur; i < stmf_nworkers_needed; i++) { 6414 if (stmf_workers[i].worker_flags & STMF_WORKER_STARTED) { 6415 stmf_nworkers_cur++; 6416 stmf_nworkers_accepting_cmds++; 6417 } else { 6418 /* Wait for transition to complete */ 6419 return; 6420 } 6421 } 6422 /* Check if we are trying to decrease the # of workers */ 6423 for (i = (stmf_nworkers_cur - 1); i >= stmf_nworkers_needed; i--) { 6424 if ((stmf_workers[i].worker_flags & STMF_WORKER_STARTED) == 0) { 6425 stmf_nworkers_cur--; 6426 /* 6427 * stmf_nworkers_accepting_cmds has already been 6428 * updated by the request to reduce the # of workers. 6429 */ 6430 } else { 6431 /* Wait for transition to complete */ 6432 return; 6433 } 6434 } 6435 /* Check if we are being asked to quit */ 6436 if (stmf_workers_state != STMF_WORKERS_ENABLED) { 6437 if (stmf_nworkers_cur) { 6438 workers_needed = 0; 6439 goto worker_mgmt_trigger_change; 6440 } 6441 return; 6442 } 6443 /* Check if we are starting */ 6444 if (stmf_nworkers_cur < stmf_i_min_nworkers) { 6445 workers_needed = stmf_i_min_nworkers; 6446 goto worker_mgmt_trigger_change; 6447 } 6448 6449 tps = drv_usectohz(1 * 1000 * 1000); 6450 if ((stmf_wm_last != 0) && 6451 ((d = ddi_get_lbolt() - stmf_wm_last) > tps)) { 6452 qd = 0; 6453 for (i = 0; i < stmf_nworkers_accepting_cmds; i++) { 6454 qd += stmf_workers[i].worker_max_qdepth_pu; 6455 stmf_workers[i].worker_max_qdepth_pu = 0; 6456 if (stmf_workers[i].worker_max_sys_qdepth_pu > 6457 cur_max_ntasks) { 6458 cur_max_ntasks = 6459 stmf_workers[i].worker_max_sys_qdepth_pu; 6460 } 6461 stmf_workers[i].worker_max_sys_qdepth_pu = 0; 6462 } 6463 } 6464 stmf_wm_last = ddi_get_lbolt(); 6465 if (d <= tps) { 6466 /* still ramping up */ 6467 return; 6468 } 6469 /* max qdepth cannot be more than max tasks */ 6470 if (qd > cur_max_ntasks) 6471 qd = cur_max_ntasks; 6472 6473 /* See if we have more workers */ 6474 if (qd < stmf_nworkers_accepting_cmds) { 6475 /* 6476 * Since we dont reduce the worker count right away, monitor 6477 * the highest load during the scale_down_delay. 6478 */ 6479 if (qd > stmf_worker_scale_down_qd) 6480 stmf_worker_scale_down_qd = qd; 6481 if (stmf_worker_scale_down_timer == 0) { 6482 stmf_worker_scale_down_timer = ddi_get_lbolt() + 6483 drv_usectohz(stmf_worker_scale_down_delay * 6484 1000 * 1000); 6485 return; 6486 } 6487 if (ddi_get_lbolt() < stmf_worker_scale_down_timer) { 6488 return; 6489 } 6490 /* Its time to reduce the workers */ 6491 if (stmf_worker_scale_down_qd < stmf_i_min_nworkers) 6492 stmf_worker_scale_down_qd = stmf_i_min_nworkers; 6493 if (stmf_worker_scale_down_qd > stmf_i_max_nworkers) 6494 stmf_worker_scale_down_qd = stmf_i_max_nworkers; 6495 if (stmf_worker_scale_down_qd == stmf_nworkers_cur) 6496 return; 6497 workers_needed = stmf_worker_scale_down_qd; 6498 stmf_worker_scale_down_qd = 0; 6499 goto worker_mgmt_trigger_change; 6500 } 6501 stmf_worker_scale_down_qd = 0; 6502 stmf_worker_scale_down_timer = 0; 6503 if (qd > stmf_i_max_nworkers) 6504 qd = stmf_i_max_nworkers; 6505 if (qd < stmf_i_min_nworkers) 6506 qd = stmf_i_min_nworkers; 6507 if (qd == stmf_nworkers_cur) 6508 return; 6509 workers_needed = qd; 6510 goto worker_mgmt_trigger_change; 6511 6512 /* NOTREACHED */ 6513 return; 6514 6515 worker_mgmt_trigger_change: 6516 ASSERT(workers_needed != stmf_nworkers_cur); 6517 if (workers_needed > stmf_nworkers_cur) { 6518 stmf_nworkers_needed = workers_needed; 6519 for (i = stmf_nworkers_cur; i < workers_needed; i++) { 6520 w = &stmf_workers[i]; 6521 w->worker_tid = thread_create(NULL, 0, stmf_worker_task, 6522 (void *)&stmf_workers[i], 0, &p0, TS_RUN, 6523 minclsyspri); 6524 } 6525 return; 6526 } 6527 /* At this point we know that we are decreasing the # of workers */ 6528 stmf_nworkers_accepting_cmds = workers_needed; 6529 stmf_nworkers_needed = workers_needed; 6530 /* Signal the workers that its time to quit */ 6531 for (i = (stmf_nworkers_cur - 1); i >= stmf_nworkers_needed; i--) { 6532 w = &stmf_workers[i]; 6533 ASSERT(w && (w->worker_flags & STMF_WORKER_STARTED)); 6534 mutex_enter(&w->worker_lock); 6535 w->worker_flags |= STMF_WORKER_TERMINATE; 6536 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0) 6537 cv_signal(&w->worker_cv); 6538 mutex_exit(&w->worker_lock); 6539 } 6540 } 6541 6542 /* 6543 * Fills out a dbuf from stmf_xfer_data_t (contained in the db_lu_private). 6544 * If all the data has been filled out, frees the xd and makes 6545 * db_lu_private NULL. 6546 */ 6547 void 6548 stmf_xd_to_dbuf(stmf_data_buf_t *dbuf, int set_rel_off) 6549 { 6550 stmf_xfer_data_t *xd; 6551 uint8_t *p; 6552 int i; 6553 uint32_t s; 6554 6555 xd = (stmf_xfer_data_t *)dbuf->db_lu_private; 6556 dbuf->db_data_size = 0; 6557 if (set_rel_off) 6558 dbuf->db_relative_offset = xd->size_done; 6559 for (i = 0; i < dbuf->db_sglist_length; i++) { 6560 s = min(xd->size_left, dbuf->db_sglist[i].seg_length); 6561 p = &xd->buf[xd->size_done]; 6562 bcopy(p, dbuf->db_sglist[i].seg_addr, s); 6563 xd->size_left -= s; 6564 xd->size_done += s; 6565 dbuf->db_data_size += s; 6566 if (xd->size_left == 0) { 6567 kmem_free(xd, xd->alloc_size); 6568 dbuf->db_lu_private = NULL; 6569 return; 6570 } 6571 } 6572 } 6573 6574 /* ARGSUSED */ 6575 stmf_status_t 6576 stmf_dlun0_task_alloc(scsi_task_t *task) 6577 { 6578 return (STMF_SUCCESS); 6579 } 6580 6581 void 6582 stmf_dlun0_new_task(scsi_task_t *task, stmf_data_buf_t *dbuf) 6583 { 6584 uint8_t *cdbp = (uint8_t *)&task->task_cdb[0]; 6585 stmf_i_scsi_session_t *iss; 6586 uint32_t sz, minsz; 6587 uint8_t *p; 6588 stmf_xfer_data_t *xd; 6589 uint8_t inq_page_length = 31; 6590 6591 if (task->task_mgmt_function) { 6592 stmf_scsilib_handle_task_mgmt(task); 6593 return; 6594 } 6595 6596 switch (cdbp[0]) { 6597 case SCMD_INQUIRY: 6598 /* 6599 * Basic protocol checks. In addition, only reply to 6600 * standard inquiry. Otherwise, the LU provider needs 6601 * to respond. 6602 */ 6603 6604 if (cdbp[2] || (cdbp[1] & 1) || cdbp[5]) { 6605 stmf_scsilib_send_status(task, STATUS_CHECK, 6606 STMF_SAA_INVALID_FIELD_IN_CDB); 6607 return; 6608 } 6609 6610 task->task_cmd_xfer_length = 6611 (((uint32_t)cdbp[3]) << 8) | cdbp[4]; 6612 6613 if (task->task_additional_flags & 6614 TASK_AF_NO_EXPECTED_XFER_LENGTH) { 6615 task->task_expected_xfer_length = 6616 task->task_cmd_xfer_length; 6617 } 6618 6619 sz = min(task->task_expected_xfer_length, 6620 min(36, task->task_cmd_xfer_length)); 6621 minsz = 36; 6622 6623 if (sz == 0) { 6624 stmf_scsilib_send_status(task, STATUS_GOOD, 0); 6625 return; 6626 } 6627 6628 if (dbuf && (dbuf->db_sglist[0].seg_length < 36)) { 6629 /* 6630 * Ignore any preallocated dbuf if the size is less 6631 * than 36. It will be freed during the task_free. 6632 */ 6633 dbuf = NULL; 6634 } 6635 if (dbuf == NULL) 6636 dbuf = stmf_alloc_dbuf(task, minsz, &minsz, 0); 6637 if ((dbuf == NULL) || (dbuf->db_sglist[0].seg_length < sz)) { 6638 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 6639 STMF_ALLOC_FAILURE, NULL); 6640 return; 6641 } 6642 dbuf->db_lu_private = NULL; 6643 6644 p = dbuf->db_sglist[0].seg_addr; 6645 6646 /* 6647 * Standard inquiry handling only. 6648 */ 6649 6650 bzero(p, inq_page_length + 5); 6651 6652 p[0] = DPQ_SUPPORTED | DTYPE_UNKNOWN; 6653 p[2] = 5; 6654 p[3] = 0x12; 6655 p[4] = inq_page_length; 6656 p[6] = 0x80; 6657 6658 (void) strncpy((char *)p+8, "SUN ", 8); 6659 (void) strncpy((char *)p+16, "COMSTAR ", 16); 6660 (void) strncpy((char *)p+32, "1.0 ", 4); 6661 6662 dbuf->db_data_size = sz; 6663 dbuf->db_relative_offset = 0; 6664 dbuf->db_flags = DB_DIRECTION_TO_RPORT; 6665 (void) stmf_xfer_data(task, dbuf, 0); 6666 6667 return; 6668 6669 case SCMD_REPORT_LUNS: 6670 task->task_cmd_xfer_length = 6671 ((((uint32_t)task->task_cdb[6]) << 24) | 6672 (((uint32_t)task->task_cdb[7]) << 16) | 6673 (((uint32_t)task->task_cdb[8]) << 8) | 6674 ((uint32_t)task->task_cdb[9])); 6675 6676 if (task->task_additional_flags & 6677 TASK_AF_NO_EXPECTED_XFER_LENGTH) { 6678 task->task_expected_xfer_length = 6679 task->task_cmd_xfer_length; 6680 } 6681 6682 sz = min(task->task_expected_xfer_length, 6683 task->task_cmd_xfer_length); 6684 6685 if (sz < 16) { 6686 stmf_scsilib_send_status(task, STATUS_CHECK, 6687 STMF_SAA_INVALID_FIELD_IN_CDB); 6688 return; 6689 } 6690 6691 iss = (stmf_i_scsi_session_t *) 6692 task->task_session->ss_stmf_private; 6693 rw_enter(iss->iss_lockp, RW_WRITER); 6694 xd = stmf_session_prepare_report_lun_data(iss->iss_sm); 6695 rw_exit(iss->iss_lockp); 6696 6697 if (xd == NULL) { 6698 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 6699 STMF_ALLOC_FAILURE, NULL); 6700 return; 6701 } 6702 6703 sz = min(sz, xd->size_left); 6704 xd->size_left = sz; 6705 minsz = min(512, sz); 6706 6707 if (dbuf == NULL) 6708 dbuf = stmf_alloc_dbuf(task, sz, &minsz, 0); 6709 if (dbuf == NULL) { 6710 kmem_free(xd, xd->alloc_size); 6711 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 6712 STMF_ALLOC_FAILURE, NULL); 6713 return; 6714 } 6715 dbuf->db_lu_private = xd; 6716 stmf_xd_to_dbuf(dbuf, 1); 6717 6718 atomic_and_32(&iss->iss_flags, 6719 ~(ISS_LUN_INVENTORY_CHANGED | ISS_GOT_INITIAL_LUNS)); 6720 dbuf->db_flags = DB_DIRECTION_TO_RPORT; 6721 (void) stmf_xfer_data(task, dbuf, 0); 6722 return; 6723 } 6724 6725 stmf_scsilib_send_status(task, STATUS_CHECK, STMF_SAA_INVALID_OPCODE); 6726 } 6727 6728 void 6729 stmf_dlun0_dbuf_done(scsi_task_t *task, stmf_data_buf_t *dbuf) 6730 { 6731 stmf_i_scsi_task_t *itask = 6732 (stmf_i_scsi_task_t *)task->task_stmf_private; 6733 6734 if (dbuf->db_xfer_status != STMF_SUCCESS) { 6735 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 6736 dbuf->db_xfer_status, NULL); 6737 return; 6738 } 6739 task->task_nbytes_transferred += dbuf->db_data_size; 6740 if (dbuf->db_lu_private) { 6741 /* There is more */ 6742 stmf_xd_to_dbuf(dbuf, 1); 6743 (void) stmf_xfer_data(task, dbuf, 0); 6744 return; 6745 } 6746 6747 stmf_free_dbuf(task, dbuf); 6748 /* 6749 * If this is a proxy task, it will need to be completed from the 6750 * proxy port provider. This message lets pppt know that the xfer 6751 * is complete. When we receive the status from pppt, we will 6752 * then relay that status back to the lport. 6753 */ 6754 if (itask->itask_flags & ITASK_PROXY_TASK) { 6755 stmf_ic_msg_t *ic_xfer_done_msg = NULL; 6756 stmf_status_t ic_ret = STMF_FAILURE; 6757 uint64_t session_msg_id; 6758 mutex_enter(&stmf_state.stmf_lock); 6759 session_msg_id = stmf_proxy_msg_id++; 6760 mutex_exit(&stmf_state.stmf_lock); 6761 /* send xfer done status to pppt */ 6762 ic_xfer_done_msg = ic_scsi_data_xfer_done_msg_alloc( 6763 itask->itask_proxy_msg_id, 6764 task->task_session->ss_session_id, 6765 STMF_SUCCESS, session_msg_id); 6766 if (ic_xfer_done_msg) { 6767 ic_ret = ic_tx_msg(ic_xfer_done_msg); 6768 if (ic_ret != STMF_IC_MSG_SUCCESS) { 6769 cmn_err(CE_WARN, "unable to xmit session msg"); 6770 } 6771 } 6772 /* task will be completed from pppt */ 6773 return; 6774 } 6775 stmf_scsilib_send_status(task, STATUS_GOOD, 0); 6776 } 6777 6778 /* ARGSUSED */ 6779 void 6780 stmf_dlun0_status_done(scsi_task_t *task) 6781 { 6782 } 6783 6784 /* ARGSUSED */ 6785 void 6786 stmf_dlun0_task_free(scsi_task_t *task) 6787 { 6788 } 6789 6790 /* ARGSUSED */ 6791 stmf_status_t 6792 stmf_dlun0_abort(struct stmf_lu *lu, int abort_cmd, void *arg, uint32_t flags) 6793 { 6794 scsi_task_t *task = (scsi_task_t *)arg; 6795 stmf_i_scsi_task_t *itask = 6796 (stmf_i_scsi_task_t *)task->task_stmf_private; 6797 stmf_i_lu_t *ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 6798 int i; 6799 uint8_t map; 6800 6801 if ((task->task_mgmt_function) && (itask->itask_flags & 6802 (ITASK_CAUSING_LU_RESET | ITASK_CAUSING_TARGET_RESET))) { 6803 switch (task->task_mgmt_function) { 6804 case TM_ABORT_TASK: 6805 case TM_ABORT_TASK_SET: 6806 case TM_CLEAR_TASK_SET: 6807 case TM_LUN_RESET: 6808 atomic_and_32(&ilu->ilu_flags, ~ILU_RESET_ACTIVE); 6809 break; 6810 case TM_TARGET_RESET: 6811 case TM_TARGET_COLD_RESET: 6812 case TM_TARGET_WARM_RESET: 6813 stmf_abort_target_reset(task); 6814 break; 6815 } 6816 return (STMF_ABORT_SUCCESS); 6817 } 6818 6819 /* 6820 * OK so its not a task mgmt. Make sure we free any xd sitting 6821 * inside any dbuf. 6822 */ 6823 if ((map = itask->itask_allocated_buf_map) != 0) { 6824 for (i = 0; i < 4; i++) { 6825 if ((map & 1) && 6826 ((itask->itask_dbufs[i])->db_lu_private)) { 6827 stmf_xfer_data_t *xd; 6828 stmf_data_buf_t *dbuf; 6829 6830 dbuf = itask->itask_dbufs[i]; 6831 xd = (stmf_xfer_data_t *)dbuf->db_lu_private; 6832 dbuf->db_lu_private = NULL; 6833 kmem_free(xd, xd->alloc_size); 6834 } 6835 map >>= 1; 6836 } 6837 } 6838 return (STMF_ABORT_SUCCESS); 6839 } 6840 6841 void 6842 stmf_dlun0_task_poll(struct scsi_task *task) 6843 { 6844 /* Right now we only do this for handling task management functions */ 6845 ASSERT(task->task_mgmt_function); 6846 6847 switch (task->task_mgmt_function) { 6848 case TM_ABORT_TASK: 6849 case TM_ABORT_TASK_SET: 6850 case TM_CLEAR_TASK_SET: 6851 case TM_LUN_RESET: 6852 (void) stmf_lun_reset_poll(task->task_lu, task, 0); 6853 return; 6854 case TM_TARGET_RESET: 6855 case TM_TARGET_COLD_RESET: 6856 case TM_TARGET_WARM_RESET: 6857 stmf_target_reset_poll(task); 6858 return; 6859 } 6860 } 6861 6862 /* ARGSUSED */ 6863 void 6864 stmf_dlun0_ctl(struct stmf_lu *lu, int cmd, void *arg) 6865 { 6866 /* This function will never be called */ 6867 cmn_err(CE_WARN, "stmf_dlun0_ctl called with cmd %x", cmd); 6868 } 6869 6870 void 6871 stmf_dlun_init() 6872 { 6873 stmf_i_lu_t *ilu; 6874 6875 dlun0 = stmf_alloc(STMF_STRUCT_STMF_LU, 0, 0); 6876 dlun0->lu_task_alloc = stmf_dlun0_task_alloc; 6877 dlun0->lu_new_task = stmf_dlun0_new_task; 6878 dlun0->lu_dbuf_xfer_done = stmf_dlun0_dbuf_done; 6879 dlun0->lu_send_status_done = stmf_dlun0_status_done; 6880 dlun0->lu_task_free = stmf_dlun0_task_free; 6881 dlun0->lu_abort = stmf_dlun0_abort; 6882 dlun0->lu_task_poll = stmf_dlun0_task_poll; 6883 dlun0->lu_ctl = stmf_dlun0_ctl; 6884 6885 ilu = (stmf_i_lu_t *)dlun0->lu_stmf_private; 6886 ilu->ilu_cur_task_cntr = &ilu->ilu_task_cntr1; 6887 } 6888 6889 stmf_status_t 6890 stmf_dlun_fini() 6891 { 6892 stmf_i_lu_t *ilu; 6893 6894 ilu = (stmf_i_lu_t *)dlun0->lu_stmf_private; 6895 6896 ASSERT(ilu->ilu_ntasks == ilu->ilu_ntasks_free); 6897 if (ilu->ilu_ntasks) { 6898 stmf_i_scsi_task_t *itask, *nitask; 6899 6900 nitask = ilu->ilu_tasks; 6901 do { 6902 itask = nitask; 6903 nitask = itask->itask_lu_next; 6904 dlun0->lu_task_free(itask->itask_task); 6905 stmf_free(itask->itask_task); 6906 } while (nitask != NULL); 6907 6908 } 6909 stmf_free(dlun0); 6910 return (STMF_SUCCESS); 6911 } 6912 6913 void 6914 stmf_abort_target_reset(scsi_task_t *task) 6915 { 6916 stmf_i_scsi_session_t *iss = (stmf_i_scsi_session_t *) 6917 task->task_session->ss_stmf_private; 6918 stmf_lun_map_t *lm; 6919 stmf_lun_map_ent_t *lm_ent; 6920 stmf_i_lu_t *ilu; 6921 int i; 6922 6923 rw_enter(iss->iss_lockp, RW_READER); 6924 lm = iss->iss_sm; 6925 for (i = 0; i < lm->lm_nentries; i++) { 6926 if (lm->lm_plus[i] == NULL) 6927 continue; 6928 lm_ent = (stmf_lun_map_ent_t *)lm->lm_plus[i]; 6929 ilu = (stmf_i_lu_t *)lm_ent->ent_lu->lu_stmf_private; 6930 if (ilu->ilu_flags & ILU_RESET_ACTIVE) { 6931 atomic_and_32(&ilu->ilu_flags, ~ILU_RESET_ACTIVE); 6932 } 6933 } 6934 atomic_and_32(&iss->iss_flags, ~ISS_RESET_ACTIVE); 6935 rw_exit(iss->iss_lockp); 6936 } 6937 6938 /* 6939 * The return value is only used by function managing target reset. 6940 */ 6941 stmf_status_t 6942 stmf_lun_reset_poll(stmf_lu_t *lu, struct scsi_task *task, int target_reset) 6943 { 6944 stmf_i_lu_t *ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 6945 int ntasks_pending; 6946 6947 ntasks_pending = ilu->ilu_ntasks - ilu->ilu_ntasks_free; 6948 /* 6949 * This function is also used during Target reset. The idea is that 6950 * once all the commands are aborted, call the LU's reset entry 6951 * point (abort entry point with a reset flag). But if this Task 6952 * mgmt is running on this LU then all the tasks cannot be aborted. 6953 * one task (this task) will still be running which is OK. 6954 */ 6955 if ((ntasks_pending == 0) || ((task->task_lu == lu) && 6956 (ntasks_pending == 1))) { 6957 stmf_status_t ret; 6958 6959 if ((task->task_mgmt_function == TM_LUN_RESET) || 6960 (task->task_mgmt_function == TM_TARGET_RESET) || 6961 (task->task_mgmt_function == TM_TARGET_WARM_RESET) || 6962 (task->task_mgmt_function == TM_TARGET_COLD_RESET)) { 6963 ret = lu->lu_abort(lu, STMF_LU_RESET_STATE, task, 0); 6964 } else { 6965 ret = STMF_SUCCESS; 6966 } 6967 if (ret == STMF_SUCCESS) { 6968 atomic_and_32(&ilu->ilu_flags, ~ILU_RESET_ACTIVE); 6969 } 6970 if (target_reset) { 6971 return (ret); 6972 } 6973 if (ret == STMF_SUCCESS) { 6974 stmf_scsilib_send_status(task, STATUS_GOOD, 0); 6975 return (ret); 6976 } 6977 if (ret != STMF_BUSY) { 6978 stmf_abort(STMF_QUEUE_TASK_ABORT, task, ret, NULL); 6979 return (ret); 6980 } 6981 } 6982 6983 if (target_reset) { 6984 /* Tell target reset polling code that we are not done */ 6985 return (STMF_BUSY); 6986 } 6987 6988 if (stmf_task_poll_lu(task, ITASK_DEFAULT_POLL_TIMEOUT) 6989 != STMF_SUCCESS) { 6990 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 6991 STMF_ALLOC_FAILURE, NULL); 6992 return (STMF_SUCCESS); 6993 } 6994 6995 return (STMF_SUCCESS); 6996 } 6997 6998 void 6999 stmf_target_reset_poll(struct scsi_task *task) 7000 { 7001 stmf_i_scsi_session_t *iss = (stmf_i_scsi_session_t *) 7002 task->task_session->ss_stmf_private; 7003 stmf_lun_map_t *lm; 7004 stmf_lun_map_ent_t *lm_ent; 7005 stmf_i_lu_t *ilu; 7006 stmf_status_t ret; 7007 int i; 7008 int not_done = 0; 7009 7010 ASSERT(iss->iss_flags & ISS_RESET_ACTIVE); 7011 7012 rw_enter(iss->iss_lockp, RW_READER); 7013 lm = iss->iss_sm; 7014 for (i = 0; i < lm->lm_nentries; i++) { 7015 if (lm->lm_plus[i] == NULL) 7016 continue; 7017 lm_ent = (stmf_lun_map_ent_t *)lm->lm_plus[i]; 7018 ilu = (stmf_i_lu_t *)lm_ent->ent_lu->lu_stmf_private; 7019 if (ilu->ilu_flags & ILU_RESET_ACTIVE) { 7020 rw_exit(iss->iss_lockp); 7021 ret = stmf_lun_reset_poll(lm_ent->ent_lu, task, 1); 7022 rw_enter(iss->iss_lockp, RW_READER); 7023 if (ret == STMF_SUCCESS) 7024 continue; 7025 not_done = 1; 7026 if (ret != STMF_BUSY) { 7027 rw_exit(iss->iss_lockp); 7028 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 7029 STMF_ABORTED, NULL); 7030 return; 7031 } 7032 } 7033 } 7034 rw_exit(iss->iss_lockp); 7035 7036 if (not_done) { 7037 if (stmf_task_poll_lu(task, ITASK_DEFAULT_POLL_TIMEOUT) 7038 != STMF_SUCCESS) { 7039 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 7040 STMF_ALLOC_FAILURE, NULL); 7041 return; 7042 } 7043 return; 7044 } 7045 7046 atomic_and_32(&iss->iss_flags, ~ISS_RESET_ACTIVE); 7047 7048 stmf_scsilib_send_status(task, STATUS_GOOD, 0); 7049 } 7050 7051 stmf_status_t 7052 stmf_lu_add_event(stmf_lu_t *lu, int eventid) 7053 { 7054 stmf_i_lu_t *ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 7055 7056 if ((eventid < 0) || (eventid >= STMF_MAX_NUM_EVENTS)) { 7057 return (STMF_INVALID_ARG); 7058 } 7059 7060 STMF_EVENT_ADD(ilu->ilu_event_hdl, eventid); 7061 return (STMF_SUCCESS); 7062 } 7063 7064 stmf_status_t 7065 stmf_lu_remove_event(stmf_lu_t *lu, int eventid) 7066 { 7067 stmf_i_lu_t *ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 7068 7069 if (eventid == STMF_EVENT_ALL) { 7070 STMF_EVENT_CLEAR_ALL(ilu->ilu_event_hdl); 7071 return (STMF_SUCCESS); 7072 } 7073 7074 if ((eventid < 0) || (eventid >= STMF_MAX_NUM_EVENTS)) { 7075 return (STMF_INVALID_ARG); 7076 } 7077 7078 STMF_EVENT_REMOVE(ilu->ilu_event_hdl, eventid); 7079 return (STMF_SUCCESS); 7080 } 7081 7082 stmf_status_t 7083 stmf_lport_add_event(stmf_local_port_t *lport, int eventid) 7084 { 7085 stmf_i_local_port_t *ilport = 7086 (stmf_i_local_port_t *)lport->lport_stmf_private; 7087 7088 if ((eventid < 0) || (eventid >= STMF_MAX_NUM_EVENTS)) { 7089 return (STMF_INVALID_ARG); 7090 } 7091 7092 STMF_EVENT_ADD(ilport->ilport_event_hdl, eventid); 7093 return (STMF_SUCCESS); 7094 } 7095 7096 stmf_status_t 7097 stmf_lport_remove_event(stmf_local_port_t *lport, int eventid) 7098 { 7099 stmf_i_local_port_t *ilport = 7100 (stmf_i_local_port_t *)lport->lport_stmf_private; 7101 7102 if (eventid == STMF_EVENT_ALL) { 7103 STMF_EVENT_CLEAR_ALL(ilport->ilport_event_hdl); 7104 return (STMF_SUCCESS); 7105 } 7106 7107 if ((eventid < 0) || (eventid >= STMF_MAX_NUM_EVENTS)) { 7108 return (STMF_INVALID_ARG); 7109 } 7110 7111 STMF_EVENT_REMOVE(ilport->ilport_event_hdl, eventid); 7112 return (STMF_SUCCESS); 7113 } 7114 7115 void 7116 stmf_generate_lu_event(stmf_i_lu_t *ilu, int eventid, void *arg, uint32_t flags) 7117 { 7118 if (STMF_EVENT_ENABLED(ilu->ilu_event_hdl, eventid) && 7119 (ilu->ilu_lu->lu_event_handler != NULL)) { 7120 ilu->ilu_lu->lu_event_handler(ilu->ilu_lu, eventid, arg, flags); 7121 } 7122 } 7123 7124 void 7125 stmf_generate_lport_event(stmf_i_local_port_t *ilport, int eventid, void *arg, 7126 uint32_t flags) 7127 { 7128 if (STMF_EVENT_ENABLED(ilport->ilport_event_hdl, eventid) && 7129 (ilport->ilport_lport->lport_event_handler != NULL)) { 7130 ilport->ilport_lport->lport_event_handler( 7131 ilport->ilport_lport, eventid, arg, flags); 7132 } 7133 } 7134 7135 /* 7136 * With the possibility of having multiple itl sessions pointing to the 7137 * same itl_kstat_info, the ilu_kstat_lock mutex is used to synchronize 7138 * the kstat update of the ilu_kstat_io, itl_kstat_taskq and itl_kstat_lu_xfer 7139 * statistics. 7140 */ 7141 void 7142 stmf_itl_task_start(stmf_i_scsi_task_t *itask) 7143 { 7144 stmf_itl_data_t *itl = itask->itask_itl_datap; 7145 scsi_task_t *task = itask->itask_task; 7146 stmf_i_lu_t *ilu; 7147 7148 if (itl == NULL || task->task_lu == dlun0) 7149 return; 7150 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 7151 itask->itask_start_timestamp = gethrtime(); 7152 if (ilu->ilu_kstat_io != NULL) { 7153 mutex_enter(ilu->ilu_kstat_io->ks_lock); 7154 stmf_update_kstat_lu_q(itask->itask_task, kstat_waitq_enter); 7155 mutex_exit(ilu->ilu_kstat_io->ks_lock); 7156 } 7157 7158 stmf_update_kstat_lport_q(itask->itask_task, kstat_waitq_enter); 7159 } 7160 7161 void 7162 stmf_itl_lu_new_task(stmf_i_scsi_task_t *itask) 7163 { 7164 stmf_itl_data_t *itl = itask->itask_itl_datap; 7165 scsi_task_t *task = itask->itask_task; 7166 stmf_i_lu_t *ilu; 7167 7168 if (itl == NULL || task->task_lu == dlun0) 7169 return; 7170 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 7171 if (ilu->ilu_kstat_io != NULL) { 7172 mutex_enter(ilu->ilu_kstat_io->ks_lock); 7173 stmf_update_kstat_lu_q(itask->itask_task, kstat_waitq_to_runq); 7174 mutex_exit(ilu->ilu_kstat_io->ks_lock); 7175 } 7176 7177 stmf_update_kstat_lport_q(itask->itask_task, kstat_waitq_to_runq); 7178 } 7179 7180 void 7181 stmf_itl_task_done(stmf_i_scsi_task_t *itask) 7182 { 7183 stmf_itl_data_t *itl = itask->itask_itl_datap; 7184 scsi_task_t *task = itask->itask_task; 7185 stmf_i_lu_t *ilu; 7186 7187 itask->itask_done_timestamp = gethrtime(); 7188 7189 if (itl == NULL || task->task_lu == dlun0) 7190 return; 7191 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 7192 7193 if (ilu->ilu_kstat_io == NULL) 7194 return; 7195 7196 mutex_enter(ilu->ilu_kstat_io->ks_lock); 7197 7198 if (itask->itask_flags & ITASK_KSTAT_IN_RUNQ) { 7199 stmf_update_kstat_lu_q(task, kstat_runq_exit); 7200 mutex_exit(ilu->ilu_kstat_io->ks_lock); 7201 stmf_update_kstat_lport_q(task, kstat_runq_exit); 7202 } else { 7203 stmf_update_kstat_lu_q(task, kstat_waitq_exit); 7204 mutex_exit(ilu->ilu_kstat_io->ks_lock); 7205 stmf_update_kstat_lport_q(task, kstat_waitq_exit); 7206 } 7207 } 7208 7209 static void 7210 stmf_lport_xfer_start(stmf_i_scsi_task_t *itask, stmf_data_buf_t *dbuf) 7211 { 7212 stmf_itl_data_t *itl = itask->itask_itl_datap; 7213 7214 if (itl == NULL) 7215 return; 7216 7217 DTRACE_PROBE2(scsi__xfer__start, scsi_task_t *, itask->itask_task, 7218 stmf_data_buf_t *, dbuf); 7219 7220 dbuf->db_xfer_start_timestamp = gethrtime(); 7221 } 7222 7223 static void 7224 stmf_lport_xfer_done(stmf_i_scsi_task_t *itask, stmf_data_buf_t *dbuf) 7225 { 7226 stmf_itl_data_t *itl = itask->itask_itl_datap; 7227 hrtime_t elapsed_time; 7228 uint64_t xfer_size; 7229 7230 if (itl == NULL) 7231 return; 7232 7233 xfer_size = (dbuf->db_xfer_status == STMF_SUCCESS) ? 7234 dbuf->db_data_size : 0; 7235 7236 elapsed_time = gethrtime() - dbuf->db_xfer_start_timestamp; 7237 if (dbuf->db_flags & DB_DIRECTION_TO_RPORT) { 7238 atomic_add_64((uint64_t *)&itask->itask_lport_read_time, 7239 elapsed_time); 7240 atomic_add_64((uint64_t *)&itask->itask_read_xfer, 7241 xfer_size); 7242 } else { 7243 atomic_add_64((uint64_t *)&itask->itask_lport_write_time, 7244 elapsed_time); 7245 atomic_add_64((uint64_t *)&itask->itask_write_xfer, 7246 xfer_size); 7247 } 7248 7249 DTRACE_PROBE3(scsi__xfer__end, scsi_task_t *, itask->itask_task, 7250 stmf_data_buf_t *, dbuf, hrtime_t, elapsed_time); 7251 7252 dbuf->db_xfer_start_timestamp = 0; 7253 } 7254 7255 void 7256 stmf_svc_init() 7257 { 7258 if (stmf_state.stmf_svc_flags & STMF_SVC_STARTED) 7259 return; 7260 stmf_state.stmf_svc_tailp = &stmf_state.stmf_svc_active; 7261 stmf_state.stmf_svc_taskq = ddi_taskq_create(0, "STMF_SVC_TASKQ", 1, 7262 TASKQ_DEFAULTPRI, 0); 7263 (void) ddi_taskq_dispatch(stmf_state.stmf_svc_taskq, 7264 stmf_svc, 0, DDI_SLEEP); 7265 } 7266 7267 stmf_status_t 7268 stmf_svc_fini() 7269 { 7270 uint32_t i; 7271 7272 mutex_enter(&stmf_state.stmf_lock); 7273 if (stmf_state.stmf_svc_flags & STMF_SVC_STARTED) { 7274 stmf_state.stmf_svc_flags |= STMF_SVC_TERMINATE; 7275 cv_signal(&stmf_state.stmf_cv); 7276 } 7277 mutex_exit(&stmf_state.stmf_lock); 7278 7279 /* Wait for 5 seconds */ 7280 for (i = 0; i < 500; i++) { 7281 if (stmf_state.stmf_svc_flags & STMF_SVC_STARTED) 7282 delay(drv_usectohz(10000)); 7283 else 7284 break; 7285 } 7286 if (i == 500) 7287 return (STMF_BUSY); 7288 7289 ddi_taskq_destroy(stmf_state.stmf_svc_taskq); 7290 7291 return (STMF_SUCCESS); 7292 } 7293 7294 struct stmf_svc_clocks { 7295 clock_t drain_start, drain_next; 7296 clock_t timing_start, timing_next; 7297 clock_t worker_delay; 7298 }; 7299 7300 /* ARGSUSED */ 7301 void 7302 stmf_svc(void *arg) 7303 { 7304 stmf_svc_req_t *req; 7305 stmf_lu_t *lu; 7306 stmf_i_lu_t *ilu; 7307 stmf_local_port_t *lport; 7308 struct stmf_svc_clocks clks = { 0 }; 7309 7310 mutex_enter(&stmf_state.stmf_lock); 7311 stmf_state.stmf_svc_flags |= STMF_SVC_STARTED | STMF_SVC_ACTIVE; 7312 7313 while (!(stmf_state.stmf_svc_flags & STMF_SVC_TERMINATE)) { 7314 if (stmf_state.stmf_svc_active == NULL) { 7315 stmf_svc_timeout(&clks); 7316 continue; 7317 } 7318 7319 /* 7320 * Pop the front request from the active list. After this, 7321 * the request will no longer be referenced by global state, 7322 * so it should be safe to access it without holding the 7323 * stmf state lock. 7324 */ 7325 req = stmf_state.stmf_svc_active; 7326 stmf_state.stmf_svc_active = req->svc_next; 7327 7328 if (stmf_state.stmf_svc_active == NULL) 7329 stmf_state.stmf_svc_tailp = &stmf_state.stmf_svc_active; 7330 7331 switch (req->svc_cmd) { 7332 case STMF_CMD_LPORT_ONLINE: 7333 /* Fallthrough */ 7334 case STMF_CMD_LPORT_OFFLINE: 7335 mutex_exit(&stmf_state.stmf_lock); 7336 lport = (stmf_local_port_t *)req->svc_obj; 7337 lport->lport_ctl(lport, req->svc_cmd, &req->svc_info); 7338 break; 7339 case STMF_CMD_LU_ONLINE: 7340 mutex_exit(&stmf_state.stmf_lock); 7341 lu = (stmf_lu_t *)req->svc_obj; 7342 lu->lu_ctl(lu, req->svc_cmd, &req->svc_info); 7343 break; 7344 case STMF_CMD_LU_OFFLINE: 7345 /* Remove all mappings of this LU */ 7346 stmf_session_lu_unmapall((stmf_lu_t *)req->svc_obj); 7347 /* Kill all the pending I/Os for this LU */ 7348 mutex_exit(&stmf_state.stmf_lock); 7349 stmf_task_lu_killall((stmf_lu_t *)req->svc_obj, NULL, 7350 STMF_ABORTED); 7351 lu = (stmf_lu_t *)req->svc_obj; 7352 ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 7353 stmf_wait_ilu_tasks_finish(ilu); 7354 lu->lu_ctl(lu, req->svc_cmd, &req->svc_info); 7355 break; 7356 default: 7357 cmn_err(CE_PANIC, "stmf_svc: unknown cmd %d", 7358 req->svc_cmd); 7359 } 7360 7361 kmem_free(req, req->svc_req_alloc_size); 7362 mutex_enter(&stmf_state.stmf_lock); 7363 } 7364 7365 stmf_state.stmf_svc_flags &= ~(STMF_SVC_STARTED | STMF_SVC_ACTIVE); 7366 mutex_exit(&stmf_state.stmf_lock); 7367 } 7368 7369 static void 7370 stmf_svc_timeout(struct stmf_svc_clocks *clks) 7371 { 7372 clock_t td; 7373 stmf_i_local_port_t *ilport, *next_ilport; 7374 stmf_i_scsi_session_t *iss; 7375 7376 ASSERT(mutex_owned(&stmf_state.stmf_lock)); 7377 7378 td = drv_usectohz(20000); 7379 7380 /* Do timeouts */ 7381 if (stmf_state.stmf_nlus && 7382 ((!clks->timing_next) || (ddi_get_lbolt() >= clks->timing_next))) { 7383 if (!stmf_state.stmf_svc_ilu_timing) { 7384 /* we are starting a new round */ 7385 stmf_state.stmf_svc_ilu_timing = 7386 stmf_state.stmf_ilulist; 7387 clks->timing_start = ddi_get_lbolt(); 7388 } 7389 7390 stmf_check_ilu_timing(); 7391 if (!stmf_state.stmf_svc_ilu_timing) { 7392 /* we finished a complete round */ 7393 clks->timing_next = 7394 clks->timing_start + drv_usectohz(5*1000*1000); 7395 } else { 7396 /* we still have some ilu items to check */ 7397 clks->timing_next = 7398 ddi_get_lbolt() + drv_usectohz(1*1000*1000); 7399 } 7400 7401 if (stmf_state.stmf_svc_active) 7402 return; 7403 } 7404 7405 /* Check if there are free tasks to clear */ 7406 if (stmf_state.stmf_nlus && 7407 ((!clks->drain_next) || (ddi_get_lbolt() >= clks->drain_next))) { 7408 if (!stmf_state.stmf_svc_ilu_draining) { 7409 /* we are starting a new round */ 7410 stmf_state.stmf_svc_ilu_draining = 7411 stmf_state.stmf_ilulist; 7412 clks->drain_start = ddi_get_lbolt(); 7413 } 7414 7415 stmf_check_freetask(); 7416 if (!stmf_state.stmf_svc_ilu_draining) { 7417 /* we finished a complete round */ 7418 clks->drain_next = 7419 clks->drain_start + drv_usectohz(10*1000*1000); 7420 } else { 7421 /* we still have some ilu items to check */ 7422 clks->drain_next = 7423 ddi_get_lbolt() + drv_usectohz(1*1000*1000); 7424 } 7425 7426 if (stmf_state.stmf_svc_active) 7427 return; 7428 } 7429 7430 /* Check if we need to run worker_mgmt */ 7431 if (ddi_get_lbolt() > clks->worker_delay) { 7432 stmf_worker_mgmt(); 7433 clks->worker_delay = ddi_get_lbolt() + 7434 stmf_worker_mgmt_delay; 7435 } 7436 7437 /* Check if any active session got its 1st LUN */ 7438 if (stmf_state.stmf_process_initial_luns) { 7439 int stmf_level = 0; 7440 int port_level; 7441 7442 for (ilport = stmf_state.stmf_ilportlist; ilport; 7443 ilport = next_ilport) { 7444 int ilport_lock_held; 7445 next_ilport = ilport->ilport_next; 7446 7447 if ((ilport->ilport_flags & 7448 ILPORT_SS_GOT_INITIAL_LUNS) == 0) 7449 continue; 7450 7451 port_level = 0; 7452 rw_enter(&ilport->ilport_lock, RW_READER); 7453 ilport_lock_held = 1; 7454 7455 for (iss = ilport->ilport_ss_list; iss; 7456 iss = iss->iss_next) { 7457 if ((iss->iss_flags & 7458 ISS_GOT_INITIAL_LUNS) == 0) 7459 continue; 7460 7461 port_level++; 7462 stmf_level++; 7463 atomic_and_32(&iss->iss_flags, 7464 ~ISS_GOT_INITIAL_LUNS); 7465 atomic_or_32(&iss->iss_flags, 7466 ISS_EVENT_ACTIVE); 7467 rw_exit(&ilport->ilport_lock); 7468 ilport_lock_held = 0; 7469 mutex_exit(&stmf_state.stmf_lock); 7470 stmf_generate_lport_event(ilport, 7471 LPORT_EVENT_INITIAL_LUN_MAPPED, 7472 iss->iss_ss, 0); 7473 atomic_and_32(&iss->iss_flags, 7474 ~ISS_EVENT_ACTIVE); 7475 mutex_enter(&stmf_state.stmf_lock); 7476 /* 7477 * scan all the ilports again as the 7478 * ilport list might have changed. 7479 */ 7480 next_ilport = stmf_state.stmf_ilportlist; 7481 break; 7482 } 7483 7484 if (port_level == 0) 7485 atomic_and_32(&ilport->ilport_flags, 7486 ~ILPORT_SS_GOT_INITIAL_LUNS); 7487 /* drop the lock if we are holding it. */ 7488 if (ilport_lock_held == 1) 7489 rw_exit(&ilport->ilport_lock); 7490 7491 /* Max 4 session at a time */ 7492 if (stmf_level >= 4) 7493 break; 7494 } 7495 7496 if (stmf_level == 0) 7497 stmf_state.stmf_process_initial_luns = 0; 7498 } 7499 7500 stmf_state.stmf_svc_flags &= ~STMF_SVC_ACTIVE; 7501 (void) cv_reltimedwait(&stmf_state.stmf_cv, 7502 &stmf_state.stmf_lock, td, TR_CLOCK_TICK); 7503 stmf_state.stmf_svc_flags |= STMF_SVC_ACTIVE; 7504 } 7505 7506 /* 7507 * Waits for ongoing I/O tasks to finish on an LU in preparation for 7508 * the LU's offlining. The LU should already be in an Offlining state 7509 * (otherwise I/O to the LU might never end). There is an additional 7510 * enforcement of this via a deadman timer check. 7511 */ 7512 static void 7513 stmf_wait_ilu_tasks_finish(stmf_i_lu_t *ilu) 7514 { 7515 clock_t start, now, deadline; 7516 7517 start = now = ddi_get_lbolt(); 7518 deadline = start + drv_usectohz(stmf_io_deadman * 1000000llu); 7519 mutex_enter(&ilu->ilu_task_lock); 7520 while (ilu->ilu_ntasks != ilu->ilu_ntasks_free) { 7521 (void) cv_timedwait(&ilu->ilu_offline_pending_cv, 7522 &ilu->ilu_task_lock, deadline); 7523 now = ddi_get_lbolt(); 7524 if (now > deadline) { 7525 if (stmf_io_deadman_enabled) { 7526 cmn_err(CE_PANIC, "stmf_svc: I/O deadman hit " 7527 "on STMF_CMD_LU_OFFLINE after %d seconds", 7528 stmf_io_deadman); 7529 } else { 7530 /* keep on spinning */ 7531 deadline = now + drv_usectohz(stmf_io_deadman * 7532 1000000llu); 7533 } 7534 } 7535 } 7536 mutex_exit(&ilu->ilu_task_lock); 7537 DTRACE_PROBE1(deadman__timeout__wait, clock_t, now - start); 7538 } 7539 7540 void 7541 stmf_svc_queue(int cmd, void *obj, stmf_state_change_info_t *info) 7542 { 7543 stmf_svc_req_t *req; 7544 int s; 7545 7546 ASSERT(!mutex_owned(&stmf_state.stmf_lock)); 7547 s = sizeof (stmf_svc_req_t); 7548 if (info->st_additional_info) { 7549 s += strlen(info->st_additional_info) + 1; 7550 } 7551 req = kmem_zalloc(s, KM_SLEEP); 7552 7553 req->svc_cmd = cmd; 7554 req->svc_obj = obj; 7555 req->svc_info.st_rflags = info->st_rflags; 7556 if (info->st_additional_info) { 7557 req->svc_info.st_additional_info = (char *)(GET_BYTE_OFFSET(req, 7558 sizeof (stmf_svc_req_t))); 7559 (void) strcpy(req->svc_info.st_additional_info, 7560 info->st_additional_info); 7561 } 7562 req->svc_req_alloc_size = s; 7563 req->svc_next = NULL; 7564 7565 mutex_enter(&stmf_state.stmf_lock); 7566 *stmf_state.stmf_svc_tailp = req; 7567 stmf_state.stmf_svc_tailp = &req->svc_next; 7568 if ((stmf_state.stmf_svc_flags & STMF_SVC_ACTIVE) == 0) { 7569 cv_signal(&stmf_state.stmf_cv); 7570 } 7571 mutex_exit(&stmf_state.stmf_lock); 7572 } 7573 7574 static void 7575 stmf_svc_kill_obj_requests(void *obj) 7576 { 7577 stmf_svc_req_t *prev_req = NULL; 7578 stmf_svc_req_t *next_req; 7579 stmf_svc_req_t *req; 7580 7581 ASSERT(mutex_owned(&stmf_state.stmf_lock)); 7582 7583 for (req = stmf_state.stmf_svc_active; req != NULL; req = next_req) { 7584 next_req = req->svc_next; 7585 7586 if (req->svc_obj == obj) { 7587 if (prev_req != NULL) 7588 prev_req->svc_next = next_req; 7589 else 7590 stmf_state.stmf_svc_active = next_req; 7591 7592 if (next_req == NULL) 7593 stmf_state.stmf_svc_tailp = (prev_req != NULL) ? 7594 &prev_req->svc_next : 7595 &stmf_state.stmf_svc_active; 7596 7597 kmem_free(req, req->svc_req_alloc_size); 7598 } else { 7599 prev_req = req; 7600 } 7601 } 7602 } 7603 7604 void 7605 stmf_trace(caddr_t ident, const char *fmt, ...) 7606 { 7607 va_list args; 7608 char tbuf[160]; 7609 int len; 7610 7611 if (!stmf_trace_on) 7612 return; 7613 len = snprintf(tbuf, 158, "%s:%07lu: ", ident ? ident : "", 7614 ddi_get_lbolt()); 7615 va_start(args, fmt); 7616 len += vsnprintf(tbuf + len, 158 - len, fmt, args); 7617 va_end(args); 7618 7619 if (len > 158) { 7620 len = 158; 7621 } 7622 tbuf[len++] = '\n'; 7623 tbuf[len] = 0; 7624 7625 mutex_enter(&trace_buf_lock); 7626 bcopy(tbuf, &stmf_trace_buf[trace_buf_curndx], len+1); 7627 trace_buf_curndx += len; 7628 if (trace_buf_curndx > (trace_buf_size - 320)) 7629 trace_buf_curndx = 0; 7630 mutex_exit(&trace_buf_lock); 7631 } 7632 7633 void 7634 stmf_trace_clear() 7635 { 7636 if (!stmf_trace_on) 7637 return; 7638 mutex_enter(&trace_buf_lock); 7639 trace_buf_curndx = 0; 7640 if (trace_buf_size > 0) 7641 stmf_trace_buf[0] = 0; 7642 mutex_exit(&trace_buf_lock); 7643 } 7644 7645 static void 7646 stmf_abort_task_offline(scsi_task_t *task, int offline_lu, char *info) 7647 { 7648 stmf_state_change_info_t change_info; 7649 void *ctl_private; 7650 uint32_t ctl_cmd; 7651 int msg = 0; 7652 7653 stmf_trace("FROM STMF", "abort_task_offline called for %s: %s", 7654 offline_lu ? "LU" : "LPORT", info ? info : "no additional info"); 7655 change_info.st_additional_info = info; 7656 if (offline_lu) { 7657 change_info.st_rflags = STMF_RFLAG_RESET | 7658 STMF_RFLAG_LU_ABORT; 7659 ctl_private = task->task_lu; 7660 if (((stmf_i_lu_t *) 7661 task->task_lu->lu_stmf_private)->ilu_state == 7662 STMF_STATE_ONLINE) { 7663 msg = 1; 7664 } 7665 ctl_cmd = STMF_CMD_LU_OFFLINE; 7666 } else { 7667 change_info.st_rflags = STMF_RFLAG_RESET | 7668 STMF_RFLAG_LPORT_ABORT; 7669 ctl_private = task->task_lport; 7670 if (((stmf_i_local_port_t *) 7671 task->task_lport->lport_stmf_private)->ilport_state == 7672 STMF_STATE_ONLINE) { 7673 msg = 1; 7674 } 7675 ctl_cmd = STMF_CMD_LPORT_OFFLINE; 7676 } 7677 7678 if (msg) { 7679 stmf_trace(0, "Calling stmf_ctl to offline %s : %s", 7680 offline_lu ? "LU" : "LPORT", info ? info : 7681 "<no additional info>"); 7682 } 7683 (void) stmf_ctl(ctl_cmd, ctl_private, &change_info); 7684 } 7685 7686 static char 7687 stmf_ctoi(char c) 7688 { 7689 if ((c >= '0') && (c <= '9')) 7690 c -= '0'; 7691 else if ((c >= 'A') && (c <= 'F')) 7692 c = c - 'A' + 10; 7693 else if ((c >= 'a') && (c <= 'f')) 7694 c = c - 'a' + 10; 7695 else 7696 c = -1; 7697 return (c); 7698 } 7699 7700 /* Convert from Hex value in ASCII format to the equivalent bytes */ 7701 static boolean_t 7702 stmf_base16_str_to_binary(char *c, int dplen, uint8_t *dp) 7703 { 7704 int ii; 7705 7706 for (ii = 0; ii < dplen; ii++) { 7707 char nibble1, nibble2; 7708 char enc_char = *c++; 7709 nibble1 = stmf_ctoi(enc_char); 7710 7711 enc_char = *c++; 7712 nibble2 = stmf_ctoi(enc_char); 7713 if (nibble1 == -1 || nibble2 == -1) 7714 return (B_FALSE); 7715 7716 dp[ii] = (nibble1 << 4) | nibble2; 7717 } 7718 return (B_TRUE); 7719 } 7720 7721 boolean_t 7722 stmf_scsilib_tptid_validate(scsi_transport_id_t *tptid, uint32_t total_sz, 7723 uint16_t *tptid_sz) 7724 { 7725 uint16_t tpd_len = SCSI_TPTID_SIZE; 7726 7727 if (tptid_sz) 7728 *tptid_sz = 0; 7729 if (total_sz < sizeof (scsi_transport_id_t)) 7730 return (B_FALSE); 7731 7732 switch (tptid->protocol_id) { 7733 7734 case PROTOCOL_FIBRE_CHANNEL: 7735 /* FC Transport ID validation checks. SPC3 rev23, Table 284 */ 7736 if (total_sz < tpd_len || tptid->format_code != 0) 7737 return (B_FALSE); 7738 break; 7739 7740 case PROTOCOL_iSCSI: 7741 { 7742 iscsi_transport_id_t *iscsiid; 7743 uint16_t adn_len, name_len; 7744 7745 /* Check for valid format code, SPC3 rev 23 Table 288 */ 7746 if ((total_sz < tpd_len) || 7747 (tptid->format_code != 0 && tptid->format_code != 1)) 7748 return (B_FALSE); 7749 7750 iscsiid = (iscsi_transport_id_t *)tptid; 7751 adn_len = READ_SCSI16(iscsiid->add_len, uint16_t); 7752 tpd_len = sizeof (iscsi_transport_id_t) + adn_len - 1; 7753 7754 /* 7755 * iSCSI Transport ID validation checks. 7756 * As per SPC3 rev 23 Section 7.5.4.6 and Table 289 & Table 290 7757 */ 7758 if (adn_len < 20 || (adn_len % 4 != 0)) 7759 return (B_FALSE); 7760 7761 name_len = strnlen(iscsiid->iscsi_name, adn_len); 7762 if (name_len == 0 || name_len >= adn_len) 7763 return (B_FALSE); 7764 7765 /* If the format_code is 1 check for ISID seperator */ 7766 if ((tptid->format_code == 1) && (strstr(iscsiid->iscsi_name, 7767 SCSI_TPTID_ISCSI_ISID_SEPERATOR) == NULL)) 7768 return (B_FALSE); 7769 7770 } 7771 break; 7772 7773 case PROTOCOL_SRP: 7774 /* SRP Transport ID validation checks. SPC3 rev23, Table 287 */ 7775 if (total_sz < tpd_len || tptid->format_code != 0) 7776 return (B_FALSE); 7777 break; 7778 7779 case PROTOCOL_PARALLEL_SCSI: 7780 case PROTOCOL_SSA: 7781 case PROTOCOL_IEEE_1394: 7782 case PROTOCOL_SAS: 7783 case PROTOCOL_ADT: 7784 case PROTOCOL_ATAPI: 7785 default: 7786 { 7787 stmf_dflt_scsi_tptid_t *dflttpd; 7788 7789 tpd_len = sizeof (stmf_dflt_scsi_tptid_t); 7790 if (total_sz < tpd_len) 7791 return (B_FALSE); 7792 dflttpd = (stmf_dflt_scsi_tptid_t *)tptid; 7793 tpd_len = tpd_len + SCSI_READ16(&dflttpd->ident_len) - 1; 7794 if (total_sz < tpd_len) 7795 return (B_FALSE); 7796 } 7797 break; 7798 } 7799 if (tptid_sz) 7800 *tptid_sz = tpd_len; 7801 return (B_TRUE); 7802 } 7803 7804 boolean_t 7805 stmf_scsilib_tptid_compare(scsi_transport_id_t *tpd1, 7806 scsi_transport_id_t *tpd2) 7807 { 7808 if ((tpd1->protocol_id != tpd2->protocol_id) || 7809 (tpd1->format_code != tpd2->format_code)) 7810 return (B_FALSE); 7811 7812 switch (tpd1->protocol_id) { 7813 7814 case PROTOCOL_iSCSI: 7815 { 7816 iscsi_transport_id_t *iscsitpd1, *iscsitpd2; 7817 uint16_t len; 7818 7819 iscsitpd1 = (iscsi_transport_id_t *)tpd1; 7820 iscsitpd2 = (iscsi_transport_id_t *)tpd2; 7821 len = SCSI_READ16(&iscsitpd1->add_len); 7822 if ((memcmp(iscsitpd1->add_len, iscsitpd2->add_len, 2) != 0) || 7823 (memcmp(iscsitpd1->iscsi_name, iscsitpd2->iscsi_name, len) 7824 != 0)) 7825 return (B_FALSE); 7826 } 7827 break; 7828 7829 case PROTOCOL_SRP: 7830 { 7831 scsi_srp_transport_id_t *srptpd1, *srptpd2; 7832 7833 srptpd1 = (scsi_srp_transport_id_t *)tpd1; 7834 srptpd2 = (scsi_srp_transport_id_t *)tpd2; 7835 if (memcmp(srptpd1->srp_name, srptpd2->srp_name, 7836 sizeof (srptpd1->srp_name)) != 0) 7837 return (B_FALSE); 7838 } 7839 break; 7840 7841 case PROTOCOL_FIBRE_CHANNEL: 7842 { 7843 scsi_fc_transport_id_t *fctpd1, *fctpd2; 7844 7845 fctpd1 = (scsi_fc_transport_id_t *)tpd1; 7846 fctpd2 = (scsi_fc_transport_id_t *)tpd2; 7847 if (memcmp(fctpd1->port_name, fctpd2->port_name, 7848 sizeof (fctpd1->port_name)) != 0) 7849 return (B_FALSE); 7850 } 7851 break; 7852 7853 case PROTOCOL_PARALLEL_SCSI: 7854 case PROTOCOL_SSA: 7855 case PROTOCOL_IEEE_1394: 7856 case PROTOCOL_SAS: 7857 case PROTOCOL_ADT: 7858 case PROTOCOL_ATAPI: 7859 default: 7860 { 7861 stmf_dflt_scsi_tptid_t *dflt1, *dflt2; 7862 uint16_t len; 7863 7864 dflt1 = (stmf_dflt_scsi_tptid_t *)tpd1; 7865 dflt2 = (stmf_dflt_scsi_tptid_t *)tpd2; 7866 len = SCSI_READ16(&dflt1->ident_len); 7867 if ((memcmp(dflt1->ident_len, dflt2->ident_len, 2) != 0) || 7868 (memcmp(dflt1->ident, dflt2->ident, len) != 0)) 7869 return (B_FALSE); 7870 } 7871 break; 7872 } 7873 return (B_TRUE); 7874 } 7875 7876 /* 7877 * Changes devid_desc to corresponding TransportID format 7878 * Returns :- pointer to stmf_remote_port_t 7879 * Note :- Allocates continous memory for stmf_remote_port_t and TransportID, 7880 * This memory need to be freed when this remote_port is no longer 7881 * used. 7882 */ 7883 stmf_remote_port_t * 7884 stmf_scsilib_devid_to_remote_port(scsi_devid_desc_t *devid) 7885 { 7886 struct scsi_fc_transport_id *fc_tpd; 7887 struct iscsi_transport_id *iscsi_tpd; 7888 struct scsi_srp_transport_id *srp_tpd; 7889 struct stmf_dflt_scsi_tptid *dflt_tpd; 7890 uint16_t ident_len, sz = 0; 7891 stmf_remote_port_t *rpt = NULL; 7892 7893 ident_len = devid->ident_length; 7894 ASSERT(ident_len); 7895 switch (devid->protocol_id) { 7896 case PROTOCOL_FIBRE_CHANNEL: 7897 sz = sizeof (scsi_fc_transport_id_t); 7898 rpt = stmf_remote_port_alloc(sz); 7899 rpt->rport_tptid->format_code = 0; 7900 rpt->rport_tptid->protocol_id = devid->protocol_id; 7901 fc_tpd = (scsi_fc_transport_id_t *)rpt->rport_tptid; 7902 /* 7903 * convert from "wwn.xxxxxxxxxxxxxxxx" to 8-byte binary 7904 * skip first 4 byte for "wwn." 7905 */ 7906 ASSERT(strncmp("wwn.", (char *)devid->ident, 4) == 0); 7907 if ((ident_len < SCSI_TPTID_FC_PORT_NAME_SIZE * 2 + 4) || 7908 !stmf_base16_str_to_binary((char *)devid->ident + 4, 7909 SCSI_TPTID_FC_PORT_NAME_SIZE, fc_tpd->port_name)) 7910 goto devid_to_remote_port_fail; 7911 break; 7912 7913 case PROTOCOL_iSCSI: 7914 sz = ALIGNED_TO_8BYTE_BOUNDARY(sizeof (iscsi_transport_id_t) + 7915 ident_len - 1); 7916 rpt = stmf_remote_port_alloc(sz); 7917 rpt->rport_tptid->format_code = 0; 7918 rpt->rport_tptid->protocol_id = devid->protocol_id; 7919 iscsi_tpd = (iscsi_transport_id_t *)rpt->rport_tptid; 7920 SCSI_WRITE16(iscsi_tpd->add_len, ident_len); 7921 (void) memcpy(iscsi_tpd->iscsi_name, devid->ident, ident_len); 7922 break; 7923 7924 case PROTOCOL_SRP: 7925 sz = sizeof (scsi_srp_transport_id_t); 7926 rpt = stmf_remote_port_alloc(sz); 7927 rpt->rport_tptid->format_code = 0; 7928 rpt->rport_tptid->protocol_id = devid->protocol_id; 7929 srp_tpd = (scsi_srp_transport_id_t *)rpt->rport_tptid; 7930 /* 7931 * convert from "eui.xxxxxxxxxxxxxxx" to 8-byte binary 7932 * skip first 4 byte for "eui." 7933 * Assume 8-byte initiator-extension part of srp_name is NOT 7934 * stored in devid and hence will be set as zero 7935 */ 7936 ASSERT(strncmp("eui.", (char *)devid->ident, 4) == 0); 7937 if ((ident_len < (SCSI_TPTID_SRP_PORT_NAME_LEN - 8) * 2 + 4) || 7938 !stmf_base16_str_to_binary((char *)devid->ident+4, 7939 SCSI_TPTID_SRP_PORT_NAME_LEN, srp_tpd->srp_name)) 7940 goto devid_to_remote_port_fail; 7941 break; 7942 7943 case PROTOCOL_PARALLEL_SCSI: 7944 case PROTOCOL_SSA: 7945 case PROTOCOL_IEEE_1394: 7946 case PROTOCOL_SAS: 7947 case PROTOCOL_ADT: 7948 case PROTOCOL_ATAPI: 7949 default : 7950 ident_len = devid->ident_length; 7951 sz = ALIGNED_TO_8BYTE_BOUNDARY(sizeof (stmf_dflt_scsi_tptid_t) + 7952 ident_len - 1); 7953 rpt = stmf_remote_port_alloc(sz); 7954 rpt->rport_tptid->format_code = 0; 7955 rpt->rport_tptid->protocol_id = devid->protocol_id; 7956 dflt_tpd = (stmf_dflt_scsi_tptid_t *)rpt->rport_tptid; 7957 SCSI_WRITE16(dflt_tpd->ident_len, ident_len); 7958 (void) memcpy(dflt_tpd->ident, devid->ident, ident_len); 7959 break; 7960 } 7961 return (rpt); 7962 7963 devid_to_remote_port_fail: 7964 stmf_remote_port_free(rpt); 7965 return (NULL); 7966 7967 } 7968 7969 stmf_remote_port_t * 7970 stmf_remote_port_alloc(uint16_t tptid_sz) { 7971 stmf_remote_port_t *rpt; 7972 rpt = (stmf_remote_port_t *)kmem_zalloc( 7973 sizeof (stmf_remote_port_t) + tptid_sz, KM_SLEEP); 7974 rpt->rport_tptid_sz = tptid_sz; 7975 rpt->rport_tptid = (scsi_transport_id_t *)(rpt + 1); 7976 return (rpt); 7977 } 7978 7979 void 7980 stmf_remote_port_free(stmf_remote_port_t *rpt) 7981 { 7982 /* 7983 * Note: stmf_scsilib_devid_to_remote_port() function allocates 7984 * remote port structures for all transports in the same way, So 7985 * it is safe to deallocate it in a protocol independent manner. 7986 * If any of the allocation method changes, corresponding changes 7987 * need to be made here too. 7988 */ 7989 kmem_free(rpt, sizeof (stmf_remote_port_t) + rpt->rport_tptid_sz); 7990 } 7991