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) 2010, Oracle and/or its affiliates. All rights reserved. 23 */ 24 25 #include <sys/conf.h> 26 #include <sys/file.h> 27 #include <sys/ddi.h> 28 #include <sys/sunddi.h> 29 #include <sys/modctl.h> 30 #include <sys/scsi/scsi.h> 31 #include <sys/scsi/impl/scsi_reset_notify.h> 32 #include <sys/disp.h> 33 #include <sys/byteorder.h> 34 #include <sys/atomic.h> 35 #include <sys/ethernet.h> 36 #include <sys/sdt.h> 37 #include <sys/nvpair.h> 38 #include <sys/zone.h> 39 #include <sys/id_space.h> 40 41 #include <stmf.h> 42 #include <lpif.h> 43 #include <portif.h> 44 #include <stmf_ioctl.h> 45 #include <stmf_impl.h> 46 #include <lun_map.h> 47 #include <stmf_state.h> 48 #include <pppt_ic_if.h> 49 #include <stmf_stats.h> 50 51 /* 52 * Lock order: 53 * stmf_state_lock --> ilport_lock/iss_lockp --> ilu_task_lock 54 */ 55 56 static uint64_t stmf_session_counter = 0; 57 static uint16_t stmf_rtpid_counter = 0; 58 /* start messages at 1 */ 59 static uint64_t stmf_proxy_msg_id = 1; 60 #define MSG_ID_TM_BIT 0x8000000000000000 61 62 static int stmf_attach(dev_info_t *dip, ddi_attach_cmd_t cmd); 63 static int stmf_detach(dev_info_t *dip, ddi_detach_cmd_t cmd); 64 static int stmf_getinfo(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg, 65 void **result); 66 static int stmf_open(dev_t *devp, int flag, int otype, cred_t *credp); 67 static int stmf_close(dev_t dev, int flag, int otype, cred_t *credp); 68 static int stmf_ioctl(dev_t dev, int cmd, intptr_t data, int mode, 69 cred_t *credp, int *rval); 70 static int stmf_get_stmf_state(stmf_state_desc_t *std); 71 static int stmf_set_stmf_state(stmf_state_desc_t *std); 72 static void stmf_abort_task_offline(scsi_task_t *task, int offline_lu, 73 char *info); 74 static int stmf_set_alua_state(stmf_alua_state_desc_t *alua_state); 75 static void stmf_get_alua_state(stmf_alua_state_desc_t *alua_state); 76 stmf_xfer_data_t *stmf_prepare_tpgs_data(uint8_t ilu_alua); 77 void stmf_svc_init(); 78 stmf_status_t stmf_svc_fini(); 79 void stmf_svc(void *arg); 80 void stmf_svc_queue(int cmd, void *obj, stmf_state_change_info_t *info); 81 void stmf_check_freetask(); 82 void stmf_abort_target_reset(scsi_task_t *task); 83 stmf_status_t stmf_lun_reset_poll(stmf_lu_t *lu, struct scsi_task *task, 84 int target_reset); 85 void stmf_target_reset_poll(struct scsi_task *task); 86 void stmf_handle_lun_reset(scsi_task_t *task); 87 void stmf_handle_target_reset(scsi_task_t *task); 88 void stmf_xd_to_dbuf(stmf_data_buf_t *dbuf); 89 int stmf_load_ppd_ioctl(stmf_ppioctl_data_t *ppi, uint64_t *ppi_token, 90 uint32_t *err_ret); 91 int stmf_delete_ppd_ioctl(stmf_ppioctl_data_t *ppi); 92 int stmf_get_ppd_ioctl(stmf_ppioctl_data_t *ppi, stmf_ppioctl_data_t *ppi_out, 93 uint32_t *err_ret); 94 void stmf_delete_ppd(stmf_pp_data_t *ppd); 95 void stmf_delete_all_ppds(); 96 void stmf_trace_clear(); 97 void stmf_worker_init(); 98 stmf_status_t stmf_worker_fini(); 99 void stmf_worker_mgmt(); 100 void stmf_worker_task(void *arg); 101 static void stmf_task_lu_free(scsi_task_t *task, stmf_i_scsi_session_t *iss); 102 static stmf_status_t stmf_ic_lu_reg(stmf_ic_reg_dereg_lun_msg_t *msg, 103 uint32_t type); 104 static stmf_status_t stmf_ic_lu_dereg(stmf_ic_reg_dereg_lun_msg_t *msg); 105 static stmf_status_t stmf_ic_rx_scsi_status(stmf_ic_scsi_status_msg_t *msg); 106 static stmf_status_t stmf_ic_rx_status(stmf_ic_status_msg_t *msg); 107 static stmf_status_t stmf_ic_rx_scsi_data(stmf_ic_scsi_data_msg_t *msg); 108 void stmf_task_lu_killall(stmf_lu_t *lu, scsi_task_t *tm_task, stmf_status_t s); 109 110 /* pppt modhandle */ 111 ddi_modhandle_t pppt_mod; 112 113 /* pppt modload imported functions */ 114 stmf_ic_reg_port_msg_alloc_func_t ic_reg_port_msg_alloc; 115 stmf_ic_dereg_port_msg_alloc_func_t ic_dereg_port_msg_alloc; 116 stmf_ic_reg_lun_msg_alloc_func_t ic_reg_lun_msg_alloc; 117 stmf_ic_dereg_lun_msg_alloc_func_t ic_dereg_lun_msg_alloc; 118 stmf_ic_lun_active_msg_alloc_func_t ic_lun_active_msg_alloc; 119 stmf_ic_scsi_cmd_msg_alloc_func_t ic_scsi_cmd_msg_alloc; 120 stmf_ic_scsi_data_xfer_done_msg_alloc_func_t ic_scsi_data_xfer_done_msg_alloc; 121 stmf_ic_session_create_msg_alloc_func_t ic_session_reg_msg_alloc; 122 stmf_ic_session_destroy_msg_alloc_func_t ic_session_dereg_msg_alloc; 123 stmf_ic_tx_msg_func_t ic_tx_msg; 124 stmf_ic_msg_free_func_t ic_msg_free; 125 126 static void stmf_itl_task_start(stmf_i_scsi_task_t *itask); 127 static void stmf_itl_lu_new_task(stmf_i_scsi_task_t *itask); 128 static void stmf_itl_task_done(stmf_i_scsi_task_t *itask); 129 130 static void stmf_lport_xfer_start(stmf_i_scsi_task_t *itask, 131 stmf_data_buf_t *dbuf); 132 static void stmf_lport_xfer_done(stmf_i_scsi_task_t *itask, 133 stmf_data_buf_t *dbuf); 134 135 static void stmf_update_kstat_lu_q(scsi_task_t *, void()); 136 static void stmf_update_kstat_lport_q(scsi_task_t *, void()); 137 static void stmf_update_kstat_lu_io(scsi_task_t *, stmf_data_buf_t *); 138 static void stmf_update_kstat_lport_io(scsi_task_t *, stmf_data_buf_t *); 139 140 static int stmf_irport_compare(const void *void_irport1, 141 const void *void_irport2); 142 static stmf_i_remote_port_t *stmf_irport_create(scsi_devid_desc_t *rport_devid); 143 static void stmf_irport_destroy(stmf_i_remote_port_t *irport); 144 static stmf_i_remote_port_t *stmf_irport_register( 145 scsi_devid_desc_t *rport_devid); 146 static stmf_i_remote_port_t *stmf_irport_lookup_locked( 147 scsi_devid_desc_t *rport_devid); 148 static void stmf_irport_deregister(stmf_i_remote_port_t *irport); 149 150 static void stmf_teardown_itl_kstats(stmf_i_itl_kstat_t *ks); 151 static void stmf_delete_itl_kstat_by_lport(char *); 152 static void stmf_delete_itl_kstat_by_guid(char *); 153 static int stmf_itl_kstat_compare(const void*, const void*); 154 static stmf_i_itl_kstat_t *stmf_itl_kstat_lookup(char *kstat_nm); 155 static stmf_i_itl_kstat_t *stmf_itl_kstat_create(stmf_itl_data_t *itl, 156 char *nm, scsi_devid_desc_t *lport, scsi_devid_desc_t *lun); 157 158 extern struct mod_ops mod_driverops; 159 160 /* =====[ Tunables ]===== */ 161 /* Internal tracing */ 162 volatile int stmf_trace_on = 1; 163 volatile int stmf_trace_buf_size = (1 * 1024 * 1024); 164 /* 165 * The reason default task timeout is 75 is because we want the 166 * host to timeout 1st and mostly host timeout is 60 seconds. 167 */ 168 volatile int stmf_default_task_timeout = 75; 169 /* 170 * Setting this to one means, you are responsible for config load and keeping 171 * things in sync with persistent database. 172 */ 173 volatile int stmf_allow_modunload = 0; 174 175 volatile int stmf_max_nworkers = 256; 176 volatile int stmf_min_nworkers = 4; 177 volatile int stmf_worker_scale_down_delay = 20; 178 179 /* === [ Debugging and fault injection ] === */ 180 #ifdef DEBUG 181 volatile int stmf_drop_task_counter = 0; 182 volatile int stmf_drop_buf_counter = 0; 183 184 #endif 185 186 stmf_state_t stmf_state; 187 static stmf_lu_t *dlun0; 188 189 static uint8_t stmf_first_zero[] = 190 { 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 0xff }; 191 static uint8_t stmf_first_one[] = 192 { 0xff, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0 }; 193 194 static kmutex_t trace_buf_lock; 195 static int trace_buf_size; 196 static int trace_buf_curndx; 197 caddr_t stmf_trace_buf; 198 199 static enum { 200 STMF_WORKERS_DISABLED = 0, 201 STMF_WORKERS_ENABLING, 202 STMF_WORKERS_ENABLED 203 } stmf_workers_state = STMF_WORKERS_DISABLED; 204 static int stmf_i_max_nworkers; 205 static int stmf_i_min_nworkers; 206 static int stmf_nworkers_cur; /* # of workers currently running */ 207 static int stmf_nworkers_needed; /* # of workers need to be running */ 208 static int stmf_worker_sel_counter = 0; 209 static uint32_t stmf_cur_ntasks = 0; 210 static clock_t stmf_wm_last = 0; 211 /* 212 * This is equal to stmf_nworkers_cur while we are increasing # workers and 213 * stmf_nworkers_needed while we are decreasing the worker count. 214 */ 215 static int stmf_nworkers_accepting_cmds; 216 static stmf_worker_t *stmf_workers = NULL; 217 static clock_t stmf_worker_mgmt_delay = 2; 218 static clock_t stmf_worker_scale_down_timer = 0; 219 static int stmf_worker_scale_down_qd = 0; 220 221 static struct cb_ops stmf_cb_ops = { 222 stmf_open, /* open */ 223 stmf_close, /* close */ 224 nodev, /* strategy */ 225 nodev, /* print */ 226 nodev, /* dump */ 227 nodev, /* read */ 228 nodev, /* write */ 229 stmf_ioctl, /* ioctl */ 230 nodev, /* devmap */ 231 nodev, /* mmap */ 232 nodev, /* segmap */ 233 nochpoll, /* chpoll */ 234 ddi_prop_op, /* cb_prop_op */ 235 0, /* streamtab */ 236 D_NEW | D_MP, /* cb_flag */ 237 CB_REV, /* rev */ 238 nodev, /* aread */ 239 nodev /* awrite */ 240 }; 241 242 static struct dev_ops stmf_ops = { 243 DEVO_REV, 244 0, 245 stmf_getinfo, 246 nulldev, /* identify */ 247 nulldev, /* probe */ 248 stmf_attach, 249 stmf_detach, 250 nodev, /* reset */ 251 &stmf_cb_ops, 252 NULL, /* bus_ops */ 253 NULL /* power */ 254 }; 255 256 #define STMF_NAME "COMSTAR STMF" 257 #define STMF_MODULE_NAME "stmf" 258 259 static struct modldrv modldrv = { 260 &mod_driverops, 261 STMF_NAME, 262 &stmf_ops 263 }; 264 265 static struct modlinkage modlinkage = { 266 MODREV_1, 267 &modldrv, 268 NULL 269 }; 270 271 int 272 _init(void) 273 { 274 int ret; 275 276 ret = mod_install(&modlinkage); 277 if (ret) 278 return (ret); 279 stmf_trace_buf = kmem_zalloc(stmf_trace_buf_size, KM_SLEEP); 280 trace_buf_size = stmf_trace_buf_size; 281 trace_buf_curndx = 0; 282 mutex_init(&trace_buf_lock, NULL, MUTEX_DRIVER, 0); 283 bzero(&stmf_state, sizeof (stmf_state_t)); 284 /* STMF service is off by default */ 285 stmf_state.stmf_service_running = 0; 286 mutex_init(&stmf_state.stmf_lock, NULL, MUTEX_DRIVER, NULL); 287 cv_init(&stmf_state.stmf_cv, NULL, CV_DRIVER, NULL); 288 stmf_session_counter = (uint64_t)ddi_get_lbolt(); 289 avl_create(&stmf_state.stmf_irportlist, 290 stmf_irport_compare, sizeof (stmf_i_remote_port_t), 291 offsetof(stmf_i_remote_port_t, irport_ln)); 292 stmf_state.stmf_ilport_inst_space = 293 id_space_create("lport-instances", 0, MAX_ILPORT); 294 stmf_state.stmf_irport_inst_space = 295 id_space_create("rport-instances", 0, MAX_IRPORT); 296 avl_create(&stmf_state.stmf_itl_kstat_list, 297 stmf_itl_kstat_compare, sizeof (stmf_i_itl_kstat_t), 298 offsetof(stmf_i_itl_kstat_t, iitl_kstat_ln)); 299 stmf_view_init(); 300 stmf_svc_init(); 301 stmf_dlun_init(); 302 return (ret); 303 } 304 305 int 306 _fini(void) 307 { 308 int ret; 309 stmf_i_remote_port_t *irport; 310 stmf_i_itl_kstat_t *ks_itl; 311 void *avl_dest_cookie = NULL; 312 313 if (stmf_state.stmf_service_running) 314 return (EBUSY); 315 if ((!stmf_allow_modunload) && 316 (stmf_state.stmf_config_state != STMF_CONFIG_NONE)) { 317 return (EBUSY); 318 } 319 if (stmf_state.stmf_nlps || stmf_state.stmf_npps) { 320 return (EBUSY); 321 } 322 if (stmf_dlun_fini() != STMF_SUCCESS) 323 return (EBUSY); 324 if (stmf_worker_fini() != STMF_SUCCESS) { 325 stmf_dlun_init(); 326 return (EBUSY); 327 } 328 if (stmf_svc_fini() != STMF_SUCCESS) { 329 stmf_dlun_init(); 330 stmf_worker_init(); 331 return (EBUSY); 332 } 333 334 ret = mod_remove(&modlinkage); 335 if (ret) { 336 stmf_svc_init(); 337 stmf_dlun_init(); 338 stmf_worker_init(); 339 return (ret); 340 } 341 342 stmf_view_clear_config(); 343 344 while ((irport = avl_destroy_nodes(&stmf_state.stmf_irportlist, 345 &avl_dest_cookie)) != NULL) 346 stmf_irport_destroy(irport); 347 avl_destroy(&stmf_state.stmf_irportlist); 348 id_space_destroy(stmf_state.stmf_ilport_inst_space); 349 id_space_destroy(stmf_state.stmf_irport_inst_space); 350 351 avl_dest_cookie = NULL; 352 while ((ks_itl = avl_destroy_nodes(&stmf_state.stmf_itl_kstat_list, 353 &avl_dest_cookie)) != NULL) { 354 stmf_teardown_itl_kstats(ks_itl); 355 kmem_free(ks_itl, sizeof (ks_itl)); 356 } 357 avl_destroy(&stmf_state.stmf_itl_kstat_list); 358 359 kmem_free(stmf_trace_buf, stmf_trace_buf_size); 360 mutex_destroy(&trace_buf_lock); 361 mutex_destroy(&stmf_state.stmf_lock); 362 cv_destroy(&stmf_state.stmf_cv); 363 return (ret); 364 } 365 366 int 367 _info(struct modinfo *modinfop) 368 { 369 return (mod_info(&modlinkage, modinfop)); 370 } 371 372 /* ARGSUSED */ 373 static int 374 stmf_getinfo(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg, void **result) 375 { 376 switch (cmd) { 377 case DDI_INFO_DEVT2DEVINFO: 378 *result = stmf_state.stmf_dip; 379 break; 380 case DDI_INFO_DEVT2INSTANCE: 381 *result = 382 (void *)(uintptr_t)ddi_get_instance(stmf_state.stmf_dip); 383 break; 384 default: 385 return (DDI_FAILURE); 386 } 387 388 return (DDI_SUCCESS); 389 } 390 391 static int 392 stmf_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 393 { 394 switch (cmd) { 395 case DDI_ATTACH: 396 stmf_state.stmf_dip = dip; 397 398 if (ddi_create_minor_node(dip, "admin", S_IFCHR, 0, 399 DDI_NT_STMF, 0) != DDI_SUCCESS) { 400 break; 401 } 402 ddi_report_dev(dip); 403 return (DDI_SUCCESS); 404 } 405 406 return (DDI_FAILURE); 407 } 408 409 static int 410 stmf_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 411 { 412 switch (cmd) { 413 case DDI_DETACH: 414 ddi_remove_minor_node(dip, 0); 415 return (DDI_SUCCESS); 416 } 417 418 return (DDI_FAILURE); 419 } 420 421 /* ARGSUSED */ 422 static int 423 stmf_open(dev_t *devp, int flag, int otype, cred_t *credp) 424 { 425 mutex_enter(&stmf_state.stmf_lock); 426 if (stmf_state.stmf_exclusive_open) { 427 mutex_exit(&stmf_state.stmf_lock); 428 return (EBUSY); 429 } 430 if (flag & FEXCL) { 431 if (stmf_state.stmf_opened) { 432 mutex_exit(&stmf_state.stmf_lock); 433 return (EBUSY); 434 } 435 stmf_state.stmf_exclusive_open = 1; 436 } 437 stmf_state.stmf_opened = 1; 438 mutex_exit(&stmf_state.stmf_lock); 439 return (0); 440 } 441 442 /* ARGSUSED */ 443 static int 444 stmf_close(dev_t dev, int flag, int otype, cred_t *credp) 445 { 446 mutex_enter(&stmf_state.stmf_lock); 447 stmf_state.stmf_opened = 0; 448 if (stmf_state.stmf_exclusive_open && 449 (stmf_state.stmf_config_state != STMF_CONFIG_INIT_DONE)) { 450 stmf_state.stmf_config_state = STMF_CONFIG_NONE; 451 stmf_delete_all_ppds(); 452 stmf_view_clear_config(); 453 stmf_view_init(); 454 } 455 stmf_state.stmf_exclusive_open = 0; 456 mutex_exit(&stmf_state.stmf_lock); 457 return (0); 458 } 459 460 int 461 stmf_copyin_iocdata(intptr_t data, int mode, stmf_iocdata_t **iocd, 462 void **ibuf, void **obuf) 463 { 464 int ret; 465 466 *ibuf = NULL; 467 *obuf = NULL; 468 *iocd = kmem_zalloc(sizeof (stmf_iocdata_t), KM_SLEEP); 469 470 ret = ddi_copyin((void *)data, *iocd, sizeof (stmf_iocdata_t), mode); 471 if (ret) 472 return (EFAULT); 473 if ((*iocd)->stmf_version != STMF_VERSION_1) { 474 ret = EINVAL; 475 goto copyin_iocdata_done; 476 } 477 if ((*iocd)->stmf_ibuf_size) { 478 *ibuf = kmem_zalloc((*iocd)->stmf_ibuf_size, KM_SLEEP); 479 ret = ddi_copyin((void *)((unsigned long)(*iocd)->stmf_ibuf), 480 *ibuf, (*iocd)->stmf_ibuf_size, mode); 481 } 482 if ((*iocd)->stmf_obuf_size) 483 *obuf = kmem_zalloc((*iocd)->stmf_obuf_size, KM_SLEEP); 484 485 if (ret == 0) 486 return (0); 487 ret = EFAULT; 488 copyin_iocdata_done:; 489 if (*obuf) { 490 kmem_free(*obuf, (*iocd)->stmf_obuf_size); 491 *obuf = NULL; 492 } 493 if (*ibuf) { 494 kmem_free(*ibuf, (*iocd)->stmf_ibuf_size); 495 *ibuf = NULL; 496 } 497 kmem_free(*iocd, sizeof (stmf_iocdata_t)); 498 return (ret); 499 } 500 501 int 502 stmf_copyout_iocdata(intptr_t data, int mode, stmf_iocdata_t *iocd, void *obuf) 503 { 504 int ret; 505 506 if (iocd->stmf_obuf_size) { 507 ret = ddi_copyout(obuf, (void *)(unsigned long)iocd->stmf_obuf, 508 iocd->stmf_obuf_size, mode); 509 if (ret) 510 return (EFAULT); 511 } 512 ret = ddi_copyout(iocd, (void *)data, sizeof (stmf_iocdata_t), mode); 513 if (ret) 514 return (EFAULT); 515 return (0); 516 } 517 518 /* ARGSUSED */ 519 static int 520 stmf_ioctl(dev_t dev, int cmd, intptr_t data, int mode, 521 cred_t *credp, int *rval) 522 { 523 stmf_iocdata_t *iocd; 524 void *ibuf = NULL, *obuf = NULL; 525 slist_lu_t *luid_list; 526 slist_target_port_t *lportid_list; 527 stmf_i_lu_t *ilu; 528 stmf_i_local_port_t *ilport; 529 stmf_i_scsi_session_t *iss; 530 slist_scsi_session_t *iss_list; 531 sioc_lu_props_t *lup; 532 sioc_target_port_props_t *lportp; 533 stmf_ppioctl_data_t *ppi, *ppi_out = NULL; 534 uint64_t *ppi_token = NULL; 535 uint8_t *p_id, *id; 536 stmf_state_desc_t *std; 537 stmf_status_t ctl_ret; 538 stmf_state_change_info_t ssi; 539 int ret = 0; 540 uint32_t n; 541 int i; 542 stmf_group_op_data_t *grp_entry; 543 stmf_group_name_t *grpname; 544 stmf_view_op_entry_t *ve; 545 stmf_id_type_t idtype; 546 stmf_id_data_t *id_entry; 547 stmf_id_list_t *id_list; 548 stmf_view_entry_t *view_entry; 549 uint32_t veid; 550 551 if ((cmd & 0xff000000) != STMF_IOCTL) { 552 return (ENOTTY); 553 } 554 555 if (drv_priv(credp) != 0) { 556 return (EPERM); 557 } 558 559 ret = stmf_copyin_iocdata(data, mode, &iocd, &ibuf, &obuf); 560 if (ret) 561 return (ret); 562 iocd->stmf_error = 0; 563 564 switch (cmd) { 565 case STMF_IOCTL_LU_LIST: 566 /* retrieves both registered/unregistered */ 567 mutex_enter(&stmf_state.stmf_lock); 568 id_list = &stmf_state.stmf_luid_list; 569 n = min(id_list->id_count, 570 (iocd->stmf_obuf_size)/sizeof (slist_lu_t)); 571 iocd->stmf_obuf_max_nentries = id_list->id_count; 572 luid_list = (slist_lu_t *)obuf; 573 id_entry = id_list->idl_head; 574 for (i = 0; i < n; i++) { 575 bcopy(id_entry->id_data, luid_list[i].lu_guid, 16); 576 id_entry = id_entry->id_next; 577 } 578 579 n = iocd->stmf_obuf_size/sizeof (slist_lu_t); 580 for (ilu = stmf_state.stmf_ilulist; ilu; ilu = ilu->ilu_next) { 581 id = (uint8_t *)ilu->ilu_lu->lu_id; 582 if (stmf_lookup_id(id_list, 16, id + 4) == NULL) { 583 iocd->stmf_obuf_max_nentries++; 584 if (i < n) { 585 bcopy(id + 4, luid_list[i].lu_guid, 586 sizeof (slist_lu_t)); 587 i++; 588 } 589 } 590 } 591 iocd->stmf_obuf_nentries = i; 592 mutex_exit(&stmf_state.stmf_lock); 593 break; 594 595 case STMF_IOCTL_REG_LU_LIST: 596 mutex_enter(&stmf_state.stmf_lock); 597 iocd->stmf_obuf_max_nentries = stmf_state.stmf_nlus; 598 n = min(stmf_state.stmf_nlus, 599 (iocd->stmf_obuf_size)/sizeof (slist_lu_t)); 600 iocd->stmf_obuf_nentries = n; 601 ilu = stmf_state.stmf_ilulist; 602 luid_list = (slist_lu_t *)obuf; 603 for (i = 0; i < n; i++) { 604 uint8_t *id; 605 id = (uint8_t *)ilu->ilu_lu->lu_id; 606 bcopy(id + 4, luid_list[i].lu_guid, 16); 607 ilu = ilu->ilu_next; 608 } 609 mutex_exit(&stmf_state.stmf_lock); 610 break; 611 612 case STMF_IOCTL_VE_LU_LIST: 613 mutex_enter(&stmf_state.stmf_lock); 614 id_list = &stmf_state.stmf_luid_list; 615 n = min(id_list->id_count, 616 (iocd->stmf_obuf_size)/sizeof (slist_lu_t)); 617 iocd->stmf_obuf_max_nentries = id_list->id_count; 618 iocd->stmf_obuf_nentries = n; 619 luid_list = (slist_lu_t *)obuf; 620 id_entry = id_list->idl_head; 621 for (i = 0; i < n; i++) { 622 bcopy(id_entry->id_data, luid_list[i].lu_guid, 16); 623 id_entry = id_entry->id_next; 624 } 625 mutex_exit(&stmf_state.stmf_lock); 626 break; 627 628 case STMF_IOCTL_TARGET_PORT_LIST: 629 mutex_enter(&stmf_state.stmf_lock); 630 iocd->stmf_obuf_max_nentries = stmf_state.stmf_nlports; 631 n = min(stmf_state.stmf_nlports, 632 (iocd->stmf_obuf_size)/sizeof (slist_target_port_t)); 633 iocd->stmf_obuf_nentries = n; 634 ilport = stmf_state.stmf_ilportlist; 635 lportid_list = (slist_target_port_t *)obuf; 636 for (i = 0; i < n; i++) { 637 uint8_t *id; 638 id = (uint8_t *)ilport->ilport_lport->lport_id; 639 bcopy(id, lportid_list[i].target, id[3] + 4); 640 ilport = ilport->ilport_next; 641 } 642 mutex_exit(&stmf_state.stmf_lock); 643 break; 644 645 case STMF_IOCTL_SESSION_LIST: 646 p_id = (uint8_t *)ibuf; 647 if ((p_id == NULL) || (iocd->stmf_ibuf_size < 4) || 648 (iocd->stmf_ibuf_size < (p_id[3] + 4))) { 649 ret = EINVAL; 650 break; 651 } 652 mutex_enter(&stmf_state.stmf_lock); 653 for (ilport = stmf_state.stmf_ilportlist; ilport; ilport = 654 ilport->ilport_next) { 655 uint8_t *id; 656 id = (uint8_t *)ilport->ilport_lport->lport_id; 657 if ((p_id[3] == id[3]) && 658 (bcmp(p_id + 4, id + 4, id[3]) == 0)) { 659 break; 660 } 661 } 662 if (ilport == NULL) { 663 mutex_exit(&stmf_state.stmf_lock); 664 ret = ENOENT; 665 break; 666 } 667 iocd->stmf_obuf_max_nentries = ilport->ilport_nsessions; 668 n = min(ilport->ilport_nsessions, 669 (iocd->stmf_obuf_size)/sizeof (slist_scsi_session_t)); 670 iocd->stmf_obuf_nentries = n; 671 iss = ilport->ilport_ss_list; 672 iss_list = (slist_scsi_session_t *)obuf; 673 for (i = 0; i < n; i++) { 674 uint8_t *id; 675 id = (uint8_t *)iss->iss_ss->ss_rport_id; 676 bcopy(id, iss_list[i].initiator, id[3] + 4); 677 iss_list[i].creation_time = (uint32_t) 678 iss->iss_creation_time; 679 if (iss->iss_ss->ss_rport_alias) { 680 (void) strncpy(iss_list[i].alias, 681 iss->iss_ss->ss_rport_alias, 255); 682 iss_list[i].alias[255] = 0; 683 } else { 684 iss_list[i].alias[0] = 0; 685 } 686 iss = iss->iss_next; 687 } 688 mutex_exit(&stmf_state.stmf_lock); 689 break; 690 691 case STMF_IOCTL_GET_LU_PROPERTIES: 692 p_id = (uint8_t *)ibuf; 693 if ((iocd->stmf_ibuf_size < 16) || 694 (iocd->stmf_obuf_size < sizeof (sioc_lu_props_t)) || 695 (p_id[0] == 0)) { 696 ret = EINVAL; 697 break; 698 } 699 mutex_enter(&stmf_state.stmf_lock); 700 for (ilu = stmf_state.stmf_ilulist; ilu; ilu = ilu->ilu_next) { 701 if (bcmp(p_id, ilu->ilu_lu->lu_id->ident, 16) == 0) 702 break; 703 } 704 if (ilu == NULL) { 705 mutex_exit(&stmf_state.stmf_lock); 706 ret = ENOENT; 707 break; 708 } 709 lup = (sioc_lu_props_t *)obuf; 710 bcopy(ilu->ilu_lu->lu_id->ident, lup->lu_guid, 16); 711 lup->lu_state = ilu->ilu_state & 0x0f; 712 lup->lu_present = 1; /* XXX */ 713 (void) strncpy(lup->lu_provider_name, 714 ilu->ilu_lu->lu_lp->lp_name, 255); 715 lup->lu_provider_name[254] = 0; 716 if (ilu->ilu_lu->lu_alias) { 717 (void) strncpy(lup->lu_alias, 718 ilu->ilu_lu->lu_alias, 255); 719 lup->lu_alias[255] = 0; 720 } else { 721 lup->lu_alias[0] = 0; 722 } 723 mutex_exit(&stmf_state.stmf_lock); 724 break; 725 726 case STMF_IOCTL_GET_TARGET_PORT_PROPERTIES: 727 p_id = (uint8_t *)ibuf; 728 if ((p_id == NULL) || 729 (iocd->stmf_ibuf_size < (p_id[3] + 4)) || 730 (iocd->stmf_obuf_size < 731 sizeof (sioc_target_port_props_t))) { 732 ret = EINVAL; 733 break; 734 } 735 mutex_enter(&stmf_state.stmf_lock); 736 for (ilport = stmf_state.stmf_ilportlist; ilport; 737 ilport = ilport->ilport_next) { 738 uint8_t *id; 739 id = (uint8_t *)ilport->ilport_lport->lport_id; 740 if ((p_id[3] == id[3]) && 741 (bcmp(p_id+4, id+4, id[3]) == 0)) 742 break; 743 } 744 if (ilport == NULL) { 745 mutex_exit(&stmf_state.stmf_lock); 746 ret = ENOENT; 747 break; 748 } 749 lportp = (sioc_target_port_props_t *)obuf; 750 bcopy(ilport->ilport_lport->lport_id, lportp->tgt_id, 751 ilport->ilport_lport->lport_id->ident_length + 4); 752 lportp->tgt_state = ilport->ilport_state & 0x0f; 753 lportp->tgt_present = 1; /* XXX */ 754 (void) strncpy(lportp->tgt_provider_name, 755 ilport->ilport_lport->lport_pp->pp_name, 255); 756 lportp->tgt_provider_name[254] = 0; 757 if (ilport->ilport_lport->lport_alias) { 758 (void) strncpy(lportp->tgt_alias, 759 ilport->ilport_lport->lport_alias, 255); 760 lportp->tgt_alias[255] = 0; 761 } else { 762 lportp->tgt_alias[0] = 0; 763 } 764 mutex_exit(&stmf_state.stmf_lock); 765 break; 766 767 case STMF_IOCTL_SET_STMF_STATE: 768 if ((ibuf == NULL) || 769 (iocd->stmf_ibuf_size < sizeof (stmf_state_desc_t))) { 770 ret = EINVAL; 771 break; 772 } 773 ret = stmf_set_stmf_state((stmf_state_desc_t *)ibuf); 774 break; 775 776 case STMF_IOCTL_GET_STMF_STATE: 777 if ((obuf == NULL) || 778 (iocd->stmf_obuf_size < sizeof (stmf_state_desc_t))) { 779 ret = EINVAL; 780 break; 781 } 782 ret = stmf_get_stmf_state((stmf_state_desc_t *)obuf); 783 break; 784 785 case STMF_IOCTL_SET_ALUA_STATE: 786 if ((ibuf == NULL) || 787 (iocd->stmf_ibuf_size < sizeof (stmf_alua_state_desc_t))) { 788 ret = EINVAL; 789 break; 790 } 791 ret = stmf_set_alua_state((stmf_alua_state_desc_t *)ibuf); 792 break; 793 794 case STMF_IOCTL_GET_ALUA_STATE: 795 if ((obuf == NULL) || 796 (iocd->stmf_obuf_size < sizeof (stmf_alua_state_desc_t))) { 797 ret = EINVAL; 798 break; 799 } 800 stmf_get_alua_state((stmf_alua_state_desc_t *)obuf); 801 break; 802 803 case STMF_IOCTL_SET_LU_STATE: 804 ssi.st_rflags = STMF_RFLAG_USER_REQUEST; 805 ssi.st_additional_info = NULL; 806 std = (stmf_state_desc_t *)ibuf; 807 if ((ibuf == NULL) || 808 (iocd->stmf_ibuf_size < sizeof (stmf_state_desc_t))) { 809 ret = EINVAL; 810 break; 811 } 812 p_id = std->ident; 813 mutex_enter(&stmf_state.stmf_lock); 814 if (stmf_state.stmf_inventory_locked) { 815 mutex_exit(&stmf_state.stmf_lock); 816 ret = EBUSY; 817 break; 818 } 819 for (ilu = stmf_state.stmf_ilulist; ilu; ilu = ilu->ilu_next) { 820 if (bcmp(p_id, ilu->ilu_lu->lu_id->ident, 16) == 0) 821 break; 822 } 823 if (ilu == NULL) { 824 mutex_exit(&stmf_state.stmf_lock); 825 ret = ENOENT; 826 break; 827 } 828 stmf_state.stmf_inventory_locked = 1; 829 mutex_exit(&stmf_state.stmf_lock); 830 cmd = (std->state == STMF_STATE_ONLINE) ? STMF_CMD_LU_ONLINE : 831 STMF_CMD_LU_OFFLINE; 832 ctl_ret = stmf_ctl(cmd, (void *)ilu->ilu_lu, &ssi); 833 if (ctl_ret == STMF_ALREADY) 834 ret = 0; 835 else if (ctl_ret == STMF_BUSY) 836 ret = EBUSY; 837 else if (ctl_ret != STMF_SUCCESS) 838 ret = EIO; 839 mutex_enter(&stmf_state.stmf_lock); 840 stmf_state.stmf_inventory_locked = 0; 841 mutex_exit(&stmf_state.stmf_lock); 842 break; 843 844 case STMF_IOCTL_SET_TARGET_PORT_STATE: 845 ssi.st_rflags = STMF_RFLAG_USER_REQUEST; 846 ssi.st_additional_info = NULL; 847 std = (stmf_state_desc_t *)ibuf; 848 if ((ibuf == NULL) || 849 (iocd->stmf_ibuf_size < sizeof (stmf_state_desc_t))) { 850 ret = EINVAL; 851 break; 852 } 853 p_id = std->ident; 854 mutex_enter(&stmf_state.stmf_lock); 855 if (stmf_state.stmf_inventory_locked) { 856 mutex_exit(&stmf_state.stmf_lock); 857 ret = EBUSY; 858 break; 859 } 860 for (ilport = stmf_state.stmf_ilportlist; ilport; 861 ilport = ilport->ilport_next) { 862 uint8_t *id; 863 id = (uint8_t *)ilport->ilport_lport->lport_id; 864 if ((id[3] == p_id[3]) && 865 (bcmp(id+4, p_id+4, id[3]) == 0)) { 866 break; 867 } 868 } 869 if (ilport == NULL) { 870 mutex_exit(&stmf_state.stmf_lock); 871 ret = ENOENT; 872 break; 873 } 874 stmf_state.stmf_inventory_locked = 1; 875 mutex_exit(&stmf_state.stmf_lock); 876 cmd = (std->state == STMF_STATE_ONLINE) ? 877 STMF_CMD_LPORT_ONLINE : STMF_CMD_LPORT_OFFLINE; 878 ctl_ret = stmf_ctl(cmd, (void *)ilport->ilport_lport, &ssi); 879 if (ctl_ret == STMF_ALREADY) 880 ret = 0; 881 else if (ctl_ret == STMF_BUSY) 882 ret = EBUSY; 883 else if (ctl_ret != STMF_SUCCESS) 884 ret = EIO; 885 mutex_enter(&stmf_state.stmf_lock); 886 stmf_state.stmf_inventory_locked = 0; 887 mutex_exit(&stmf_state.stmf_lock); 888 break; 889 890 case STMF_IOCTL_ADD_HG_ENTRY: 891 idtype = STMF_ID_TYPE_HOST; 892 /* FALLTHROUGH */ 893 case STMF_IOCTL_ADD_TG_ENTRY: 894 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) { 895 ret = EACCES; 896 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT; 897 break; 898 } 899 if (cmd == STMF_IOCTL_ADD_TG_ENTRY) { 900 idtype = STMF_ID_TYPE_TARGET; 901 } 902 grp_entry = (stmf_group_op_data_t *)ibuf; 903 if ((ibuf == NULL) || 904 (iocd->stmf_ibuf_size < sizeof (stmf_group_op_data_t))) { 905 ret = EINVAL; 906 break; 907 } 908 if (grp_entry->group.name[0] == '*') { 909 ret = EINVAL; 910 break; /* not allowed */ 911 } 912 mutex_enter(&stmf_state.stmf_lock); 913 ret = stmf_add_group_member(grp_entry->group.name, 914 grp_entry->group.name_size, 915 grp_entry->ident + 4, 916 grp_entry->ident[3], 917 idtype, 918 &iocd->stmf_error); 919 mutex_exit(&stmf_state.stmf_lock); 920 break; 921 case STMF_IOCTL_REMOVE_HG_ENTRY: 922 idtype = STMF_ID_TYPE_HOST; 923 /* FALLTHROUGH */ 924 case STMF_IOCTL_REMOVE_TG_ENTRY: 925 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) { 926 ret = EACCES; 927 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT; 928 break; 929 } 930 if (cmd == STMF_IOCTL_REMOVE_TG_ENTRY) { 931 idtype = STMF_ID_TYPE_TARGET; 932 } 933 grp_entry = (stmf_group_op_data_t *)ibuf; 934 if ((ibuf == NULL) || 935 (iocd->stmf_ibuf_size < sizeof (stmf_group_op_data_t))) { 936 ret = EINVAL; 937 break; 938 } 939 if (grp_entry->group.name[0] == '*') { 940 ret = EINVAL; 941 break; /* not allowed */ 942 } 943 mutex_enter(&stmf_state.stmf_lock); 944 ret = stmf_remove_group_member(grp_entry->group.name, 945 grp_entry->group.name_size, 946 grp_entry->ident + 4, 947 grp_entry->ident[3], 948 idtype, 949 &iocd->stmf_error); 950 mutex_exit(&stmf_state.stmf_lock); 951 break; 952 case STMF_IOCTL_CREATE_HOST_GROUP: 953 idtype = STMF_ID_TYPE_HOST_GROUP; 954 /* FALLTHROUGH */ 955 case STMF_IOCTL_CREATE_TARGET_GROUP: 956 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) { 957 ret = EACCES; 958 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT; 959 break; 960 } 961 grpname = (stmf_group_name_t *)ibuf; 962 963 if (cmd == STMF_IOCTL_CREATE_TARGET_GROUP) 964 idtype = STMF_ID_TYPE_TARGET_GROUP; 965 if ((ibuf == NULL) || 966 (iocd->stmf_ibuf_size < sizeof (stmf_group_name_t))) { 967 ret = EINVAL; 968 break; 969 } 970 if (grpname->name[0] == '*') { 971 ret = EINVAL; 972 break; /* not allowed */ 973 } 974 mutex_enter(&stmf_state.stmf_lock); 975 ret = stmf_add_group(grpname->name, 976 grpname->name_size, idtype, &iocd->stmf_error); 977 mutex_exit(&stmf_state.stmf_lock); 978 break; 979 case STMF_IOCTL_REMOVE_HOST_GROUP: 980 idtype = STMF_ID_TYPE_HOST_GROUP; 981 /* FALLTHROUGH */ 982 case STMF_IOCTL_REMOVE_TARGET_GROUP: 983 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) { 984 ret = EACCES; 985 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT; 986 break; 987 } 988 grpname = (stmf_group_name_t *)ibuf; 989 if (cmd == STMF_IOCTL_REMOVE_TARGET_GROUP) 990 idtype = STMF_ID_TYPE_TARGET_GROUP; 991 if ((ibuf == NULL) || 992 (iocd->stmf_ibuf_size < sizeof (stmf_group_name_t))) { 993 ret = EINVAL; 994 break; 995 } 996 if (grpname->name[0] == '*') { 997 ret = EINVAL; 998 break; /* not allowed */ 999 } 1000 mutex_enter(&stmf_state.stmf_lock); 1001 ret = stmf_remove_group(grpname->name, 1002 grpname->name_size, idtype, &iocd->stmf_error); 1003 mutex_exit(&stmf_state.stmf_lock); 1004 break; 1005 case STMF_IOCTL_VALIDATE_VIEW: 1006 case STMF_IOCTL_ADD_VIEW_ENTRY: 1007 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) { 1008 ret = EACCES; 1009 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT; 1010 break; 1011 } 1012 ve = (stmf_view_op_entry_t *)ibuf; 1013 if ((ibuf == NULL) || 1014 (iocd->stmf_ibuf_size < sizeof (stmf_view_op_entry_t))) { 1015 ret = EINVAL; 1016 break; 1017 } 1018 if (!ve->ve_lu_number_valid) 1019 ve->ve_lu_nbr[2] = 0xFF; 1020 if (ve->ve_all_hosts) { 1021 ve->ve_host_group.name[0] = '*'; 1022 ve->ve_host_group.name_size = 1; 1023 } 1024 if (ve->ve_all_targets) { 1025 ve->ve_target_group.name[0] = '*'; 1026 ve->ve_target_group.name_size = 1; 1027 } 1028 if (ve->ve_ndx_valid) 1029 veid = ve->ve_ndx; 1030 else 1031 veid = 0xffffffff; 1032 mutex_enter(&stmf_state.stmf_lock); 1033 if (cmd == STMF_IOCTL_ADD_VIEW_ENTRY) { 1034 ret = stmf_add_ve(ve->ve_host_group.name, 1035 ve->ve_host_group.name_size, 1036 ve->ve_target_group.name, 1037 ve->ve_target_group.name_size, 1038 ve->ve_guid, 1039 &veid, 1040 ve->ve_lu_nbr, 1041 &iocd->stmf_error); 1042 } else { /* STMF_IOCTL_VALIDATE_VIEW */ 1043 ret = stmf_validate_lun_ve(ve->ve_host_group.name, 1044 ve->ve_host_group.name_size, 1045 ve->ve_target_group.name, 1046 ve->ve_target_group.name_size, 1047 ve->ve_lu_nbr, 1048 &iocd->stmf_error); 1049 } 1050 mutex_exit(&stmf_state.stmf_lock); 1051 if (ret == 0 && 1052 (!ve->ve_ndx_valid || !ve->ve_lu_number_valid) && 1053 iocd->stmf_obuf_size >= sizeof (stmf_view_op_entry_t)) { 1054 stmf_view_op_entry_t *ve_ret = 1055 (stmf_view_op_entry_t *)obuf; 1056 iocd->stmf_obuf_nentries = 1; 1057 iocd->stmf_obuf_max_nentries = 1; 1058 if (!ve->ve_ndx_valid) { 1059 ve_ret->ve_ndx = veid; 1060 ve_ret->ve_ndx_valid = 1; 1061 } 1062 if (!ve->ve_lu_number_valid) { 1063 ve_ret->ve_lu_number_valid = 1; 1064 bcopy(ve->ve_lu_nbr, ve_ret->ve_lu_nbr, 8); 1065 } 1066 } 1067 break; 1068 case STMF_IOCTL_REMOVE_VIEW_ENTRY: 1069 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) { 1070 ret = EACCES; 1071 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT; 1072 break; 1073 } 1074 ve = (stmf_view_op_entry_t *)ibuf; 1075 if ((ibuf == NULL) || 1076 (iocd->stmf_ibuf_size < sizeof (stmf_view_op_entry_t))) { 1077 ret = EINVAL; 1078 break; 1079 } 1080 if (!ve->ve_ndx_valid) { 1081 ret = EINVAL; 1082 break; 1083 } 1084 mutex_enter(&stmf_state.stmf_lock); 1085 ret = stmf_remove_ve_by_id(ve->ve_guid, ve->ve_ndx, 1086 &iocd->stmf_error); 1087 mutex_exit(&stmf_state.stmf_lock); 1088 break; 1089 case STMF_IOCTL_GET_HG_LIST: 1090 id_list = &stmf_state.stmf_hg_list; 1091 /* FALLTHROUGH */ 1092 case STMF_IOCTL_GET_TG_LIST: 1093 if (cmd == STMF_IOCTL_GET_TG_LIST) 1094 id_list = &stmf_state.stmf_tg_list; 1095 mutex_enter(&stmf_state.stmf_lock); 1096 iocd->stmf_obuf_max_nentries = id_list->id_count; 1097 n = min(id_list->id_count, 1098 (iocd->stmf_obuf_size)/sizeof (stmf_group_name_t)); 1099 iocd->stmf_obuf_nentries = n; 1100 id_entry = id_list->idl_head; 1101 grpname = (stmf_group_name_t *)obuf; 1102 for (i = 0; i < n; i++) { 1103 if (id_entry->id_data[0] == '*') { 1104 if (iocd->stmf_obuf_nentries > 0) { 1105 iocd->stmf_obuf_nentries--; 1106 } 1107 id_entry = id_entry->id_next; 1108 continue; 1109 } 1110 grpname->name_size = id_entry->id_data_size; 1111 bcopy(id_entry->id_data, grpname->name, 1112 id_entry->id_data_size); 1113 grpname++; 1114 id_entry = id_entry->id_next; 1115 } 1116 mutex_exit(&stmf_state.stmf_lock); 1117 break; 1118 case STMF_IOCTL_GET_HG_ENTRIES: 1119 id_list = &stmf_state.stmf_hg_list; 1120 /* FALLTHROUGH */ 1121 case STMF_IOCTL_GET_TG_ENTRIES: 1122 grpname = (stmf_group_name_t *)ibuf; 1123 if ((ibuf == NULL) || 1124 (iocd->stmf_ibuf_size < sizeof (stmf_group_name_t))) { 1125 ret = EINVAL; 1126 break; 1127 } 1128 if (cmd == STMF_IOCTL_GET_TG_ENTRIES) { 1129 id_list = &stmf_state.stmf_tg_list; 1130 } 1131 mutex_enter(&stmf_state.stmf_lock); 1132 id_entry = stmf_lookup_id(id_list, grpname->name_size, 1133 grpname->name); 1134 if (!id_entry) 1135 ret = ENODEV; 1136 else { 1137 stmf_ge_ident_t *grp_entry; 1138 id_list = (stmf_id_list_t *)id_entry->id_impl_specific; 1139 iocd->stmf_obuf_max_nentries = id_list->id_count; 1140 n = min(id_list->id_count, 1141 iocd->stmf_obuf_size/sizeof (stmf_ge_ident_t)); 1142 iocd->stmf_obuf_nentries = n; 1143 id_entry = id_list->idl_head; 1144 grp_entry = (stmf_ge_ident_t *)obuf; 1145 for (i = 0; i < n; i++) { 1146 bcopy(id_entry->id_data, grp_entry->ident, 1147 id_entry->id_data_size); 1148 grp_entry->ident_size = id_entry->id_data_size; 1149 id_entry = id_entry->id_next; 1150 grp_entry++; 1151 } 1152 } 1153 mutex_exit(&stmf_state.stmf_lock); 1154 break; 1155 1156 case STMF_IOCTL_GET_VE_LIST: 1157 n = iocd->stmf_obuf_size/sizeof (stmf_view_op_entry_t); 1158 mutex_enter(&stmf_state.stmf_lock); 1159 ve = (stmf_view_op_entry_t *)obuf; 1160 for (id_entry = stmf_state.stmf_luid_list.idl_head; 1161 id_entry; id_entry = id_entry->id_next) { 1162 for (view_entry = (stmf_view_entry_t *) 1163 id_entry->id_impl_specific; view_entry; 1164 view_entry = view_entry->ve_next) { 1165 iocd->stmf_obuf_max_nentries++; 1166 if (iocd->stmf_obuf_nentries >= n) 1167 continue; 1168 ve->ve_ndx_valid = 1; 1169 ve->ve_ndx = view_entry->ve_id; 1170 ve->ve_lu_number_valid = 1; 1171 bcopy(view_entry->ve_lun, ve->ve_lu_nbr, 8); 1172 bcopy(view_entry->ve_luid->id_data, ve->ve_guid, 1173 view_entry->ve_luid->id_data_size); 1174 if (view_entry->ve_hg->id_data[0] == '*') { 1175 ve->ve_all_hosts = 1; 1176 } else { 1177 bcopy(view_entry->ve_hg->id_data, 1178 ve->ve_host_group.name, 1179 view_entry->ve_hg->id_data_size); 1180 ve->ve_host_group.name_size = 1181 view_entry->ve_hg->id_data_size; 1182 } 1183 1184 if (view_entry->ve_tg->id_data[0] == '*') { 1185 ve->ve_all_targets = 1; 1186 } else { 1187 bcopy(view_entry->ve_tg->id_data, 1188 ve->ve_target_group.name, 1189 view_entry->ve_tg->id_data_size); 1190 ve->ve_target_group.name_size = 1191 view_entry->ve_tg->id_data_size; 1192 } 1193 ve++; 1194 iocd->stmf_obuf_nentries++; 1195 } 1196 } 1197 mutex_exit(&stmf_state.stmf_lock); 1198 break; 1199 1200 case STMF_IOCTL_LU_VE_LIST: 1201 p_id = (uint8_t *)ibuf; 1202 if ((iocd->stmf_ibuf_size != 16) || 1203 (iocd->stmf_obuf_size < sizeof (stmf_view_op_entry_t))) { 1204 ret = EINVAL; 1205 break; 1206 } 1207 1208 n = iocd->stmf_obuf_size/sizeof (stmf_view_op_entry_t); 1209 mutex_enter(&stmf_state.stmf_lock); 1210 ve = (stmf_view_op_entry_t *)obuf; 1211 for (id_entry = stmf_state.stmf_luid_list.idl_head; 1212 id_entry; id_entry = id_entry->id_next) { 1213 if (bcmp(id_entry->id_data, p_id, 16) != 0) 1214 continue; 1215 for (view_entry = (stmf_view_entry_t *) 1216 id_entry->id_impl_specific; view_entry; 1217 view_entry = view_entry->ve_next) { 1218 iocd->stmf_obuf_max_nentries++; 1219 if (iocd->stmf_obuf_nentries >= n) 1220 continue; 1221 ve->ve_ndx_valid = 1; 1222 ve->ve_ndx = view_entry->ve_id; 1223 ve->ve_lu_number_valid = 1; 1224 bcopy(view_entry->ve_lun, ve->ve_lu_nbr, 8); 1225 bcopy(view_entry->ve_luid->id_data, ve->ve_guid, 1226 view_entry->ve_luid->id_data_size); 1227 if (view_entry->ve_hg->id_data[0] == '*') { 1228 ve->ve_all_hosts = 1; 1229 } else { 1230 bcopy(view_entry->ve_hg->id_data, 1231 ve->ve_host_group.name, 1232 view_entry->ve_hg->id_data_size); 1233 ve->ve_host_group.name_size = 1234 view_entry->ve_hg->id_data_size; 1235 } 1236 1237 if (view_entry->ve_tg->id_data[0] == '*') { 1238 ve->ve_all_targets = 1; 1239 } else { 1240 bcopy(view_entry->ve_tg->id_data, 1241 ve->ve_target_group.name, 1242 view_entry->ve_tg->id_data_size); 1243 ve->ve_target_group.name_size = 1244 view_entry->ve_tg->id_data_size; 1245 } 1246 ve++; 1247 iocd->stmf_obuf_nentries++; 1248 } 1249 break; 1250 } 1251 mutex_exit(&stmf_state.stmf_lock); 1252 break; 1253 1254 case STMF_IOCTL_LOAD_PP_DATA: 1255 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) { 1256 ret = EACCES; 1257 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT; 1258 break; 1259 } 1260 ppi = (stmf_ppioctl_data_t *)ibuf; 1261 if ((ppi == NULL) || 1262 (iocd->stmf_ibuf_size < sizeof (stmf_ppioctl_data_t))) { 1263 ret = EINVAL; 1264 break; 1265 } 1266 /* returned token */ 1267 ppi_token = (uint64_t *)obuf; 1268 if ((ppi_token == NULL) || 1269 (iocd->stmf_obuf_size < sizeof (uint64_t))) { 1270 ret = EINVAL; 1271 break; 1272 } 1273 ret = stmf_load_ppd_ioctl(ppi, ppi_token, &iocd->stmf_error); 1274 break; 1275 1276 case STMF_IOCTL_GET_PP_DATA: 1277 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) { 1278 ret = EACCES; 1279 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT; 1280 break; 1281 } 1282 ppi = (stmf_ppioctl_data_t *)ibuf; 1283 if (ppi == NULL || 1284 (iocd->stmf_ibuf_size < sizeof (stmf_ppioctl_data_t))) { 1285 ret = EINVAL; 1286 break; 1287 } 1288 ppi_out = (stmf_ppioctl_data_t *)obuf; 1289 if ((ppi_out == NULL) || 1290 (iocd->stmf_obuf_size < sizeof (stmf_ppioctl_data_t))) { 1291 ret = EINVAL; 1292 break; 1293 } 1294 ret = stmf_get_ppd_ioctl(ppi, ppi_out, &iocd->stmf_error); 1295 break; 1296 1297 case STMF_IOCTL_CLEAR_PP_DATA: 1298 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) { 1299 ret = EACCES; 1300 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT; 1301 break; 1302 } 1303 ppi = (stmf_ppioctl_data_t *)ibuf; 1304 if ((ppi == NULL) || 1305 (iocd->stmf_ibuf_size < sizeof (stmf_ppioctl_data_t))) { 1306 ret = EINVAL; 1307 break; 1308 } 1309 ret = stmf_delete_ppd_ioctl(ppi); 1310 break; 1311 1312 case STMF_IOCTL_CLEAR_TRACE: 1313 stmf_trace_clear(); 1314 break; 1315 1316 case STMF_IOCTL_ADD_TRACE: 1317 if (iocd->stmf_ibuf_size && ibuf) { 1318 ((uint8_t *)ibuf)[iocd->stmf_ibuf_size - 1] = 0; 1319 stmf_trace("\nstradm", "%s\n", ibuf); 1320 } 1321 break; 1322 1323 case STMF_IOCTL_GET_TRACE_POSITION: 1324 if (obuf && (iocd->stmf_obuf_size > 3)) { 1325 mutex_enter(&trace_buf_lock); 1326 *((int *)obuf) = trace_buf_curndx; 1327 mutex_exit(&trace_buf_lock); 1328 } else { 1329 ret = EINVAL; 1330 } 1331 break; 1332 1333 case STMF_IOCTL_GET_TRACE: 1334 if ((iocd->stmf_obuf_size == 0) || (iocd->stmf_ibuf_size < 4)) { 1335 ret = EINVAL; 1336 break; 1337 } 1338 i = *((int *)ibuf); 1339 if ((i > trace_buf_size) || ((i + iocd->stmf_obuf_size) > 1340 trace_buf_size)) { 1341 ret = EINVAL; 1342 break; 1343 } 1344 mutex_enter(&trace_buf_lock); 1345 bcopy(stmf_trace_buf + i, obuf, iocd->stmf_obuf_size); 1346 mutex_exit(&trace_buf_lock); 1347 break; 1348 1349 default: 1350 ret = ENOTTY; 1351 } 1352 1353 if (ret == 0) { 1354 ret = stmf_copyout_iocdata(data, mode, iocd, obuf); 1355 } else if (iocd->stmf_error) { 1356 (void) stmf_copyout_iocdata(data, mode, iocd, obuf); 1357 } 1358 if (obuf) { 1359 kmem_free(obuf, iocd->stmf_obuf_size); 1360 obuf = NULL; 1361 } 1362 if (ibuf) { 1363 kmem_free(ibuf, iocd->stmf_ibuf_size); 1364 ibuf = NULL; 1365 } 1366 kmem_free(iocd, sizeof (stmf_iocdata_t)); 1367 return (ret); 1368 } 1369 1370 static int 1371 stmf_get_service_state() 1372 { 1373 stmf_i_local_port_t *ilport; 1374 stmf_i_lu_t *ilu; 1375 int online = 0; 1376 int offline = 0; 1377 int onlining = 0; 1378 int offlining = 0; 1379 1380 ASSERT(mutex_owned(&stmf_state.stmf_lock)); 1381 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL; 1382 ilport = ilport->ilport_next) { 1383 if (ilport->ilport_state == STMF_STATE_OFFLINE) 1384 offline++; 1385 else if (ilport->ilport_state == STMF_STATE_ONLINE) 1386 online++; 1387 else if (ilport->ilport_state == STMF_STATE_ONLINING) 1388 onlining++; 1389 else if (ilport->ilport_state == STMF_STATE_OFFLINING) 1390 offlining++; 1391 } 1392 1393 for (ilu = stmf_state.stmf_ilulist; ilu != NULL; 1394 ilu = ilu->ilu_next) { 1395 if (ilu->ilu_state == STMF_STATE_OFFLINE) 1396 offline++; 1397 else if (ilu->ilu_state == STMF_STATE_ONLINE) 1398 online++; 1399 else if (ilu->ilu_state == STMF_STATE_ONLINING) 1400 onlining++; 1401 else if (ilu->ilu_state == STMF_STATE_OFFLINING) 1402 offlining++; 1403 } 1404 1405 if (stmf_state.stmf_service_running) { 1406 if (onlining) 1407 return (STMF_STATE_ONLINING); 1408 else 1409 return (STMF_STATE_ONLINE); 1410 } 1411 1412 if (offlining) { 1413 return (STMF_STATE_OFFLINING); 1414 } 1415 1416 return (STMF_STATE_OFFLINE); 1417 } 1418 1419 static int 1420 stmf_set_stmf_state(stmf_state_desc_t *std) 1421 { 1422 stmf_i_local_port_t *ilport; 1423 stmf_i_lu_t *ilu; 1424 stmf_state_change_info_t ssi; 1425 int svc_state; 1426 1427 ssi.st_rflags = STMF_RFLAG_USER_REQUEST; 1428 ssi.st_additional_info = NULL; 1429 1430 mutex_enter(&stmf_state.stmf_lock); 1431 if (!stmf_state.stmf_exclusive_open) { 1432 mutex_exit(&stmf_state.stmf_lock); 1433 return (EACCES); 1434 } 1435 1436 if (stmf_state.stmf_inventory_locked) { 1437 mutex_exit(&stmf_state.stmf_lock); 1438 return (EBUSY); 1439 } 1440 1441 if ((std->state != STMF_STATE_ONLINE) && 1442 (std->state != STMF_STATE_OFFLINE)) { 1443 mutex_exit(&stmf_state.stmf_lock); 1444 return (EINVAL); 1445 } 1446 1447 svc_state = stmf_get_service_state(); 1448 if ((svc_state == STMF_STATE_OFFLINING) || 1449 (svc_state == STMF_STATE_ONLINING)) { 1450 mutex_exit(&stmf_state.stmf_lock); 1451 return (EBUSY); 1452 } 1453 1454 if (svc_state == STMF_STATE_OFFLINE) { 1455 if (std->config_state == STMF_CONFIG_INIT) { 1456 if (std->state != STMF_STATE_OFFLINE) { 1457 mutex_exit(&stmf_state.stmf_lock); 1458 return (EINVAL); 1459 } 1460 stmf_state.stmf_config_state = STMF_CONFIG_INIT; 1461 stmf_delete_all_ppds(); 1462 stmf_view_clear_config(); 1463 stmf_view_init(); 1464 mutex_exit(&stmf_state.stmf_lock); 1465 return (0); 1466 } 1467 if ((stmf_state.stmf_config_state == STMF_CONFIG_INIT) || 1468 (stmf_state.stmf_config_state == STMF_CONFIG_NONE)) { 1469 if (std->config_state != STMF_CONFIG_INIT_DONE) { 1470 mutex_exit(&stmf_state.stmf_lock); 1471 return (EINVAL); 1472 } 1473 stmf_state.stmf_config_state = STMF_CONFIG_INIT_DONE; 1474 } 1475 if (std->state == STMF_STATE_OFFLINE) { 1476 mutex_exit(&stmf_state.stmf_lock); 1477 return (0); 1478 } 1479 if (stmf_state.stmf_config_state == STMF_CONFIG_INIT) { 1480 mutex_exit(&stmf_state.stmf_lock); 1481 return (EINVAL); 1482 } 1483 stmf_state.stmf_inventory_locked = 1; 1484 stmf_state.stmf_service_running = 1; 1485 mutex_exit(&stmf_state.stmf_lock); 1486 1487 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL; 1488 ilport = ilport->ilport_next) { 1489 if (ilport->ilport_prev_state != STMF_STATE_ONLINE) 1490 continue; 1491 (void) stmf_ctl(STMF_CMD_LPORT_ONLINE, 1492 ilport->ilport_lport, &ssi); 1493 } 1494 1495 for (ilu = stmf_state.stmf_ilulist; ilu != NULL; 1496 ilu = ilu->ilu_next) { 1497 if (ilu->ilu_prev_state != STMF_STATE_ONLINE) 1498 continue; 1499 (void) stmf_ctl(STMF_CMD_LU_ONLINE, ilu->ilu_lu, &ssi); 1500 } 1501 mutex_enter(&stmf_state.stmf_lock); 1502 stmf_state.stmf_inventory_locked = 0; 1503 mutex_exit(&stmf_state.stmf_lock); 1504 return (0); 1505 } 1506 1507 /* svc_state is STMF_STATE_ONLINE here */ 1508 if ((std->state != STMF_STATE_OFFLINE) || 1509 (std->config_state == STMF_CONFIG_INIT)) { 1510 mutex_exit(&stmf_state.stmf_lock); 1511 return (EACCES); 1512 } 1513 1514 stmf_state.stmf_inventory_locked = 1; 1515 stmf_state.stmf_service_running = 0; 1516 1517 mutex_exit(&stmf_state.stmf_lock); 1518 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL; 1519 ilport = ilport->ilport_next) { 1520 if (ilport->ilport_state != STMF_STATE_ONLINE) 1521 continue; 1522 (void) stmf_ctl(STMF_CMD_LPORT_OFFLINE, 1523 ilport->ilport_lport, &ssi); 1524 } 1525 1526 for (ilu = stmf_state.stmf_ilulist; ilu != NULL; 1527 ilu = ilu->ilu_next) { 1528 if (ilu->ilu_state != STMF_STATE_ONLINE) 1529 continue; 1530 (void) stmf_ctl(STMF_CMD_LU_OFFLINE, ilu->ilu_lu, &ssi); 1531 } 1532 mutex_enter(&stmf_state.stmf_lock); 1533 stmf_state.stmf_inventory_locked = 0; 1534 mutex_exit(&stmf_state.stmf_lock); 1535 return (0); 1536 } 1537 1538 static int 1539 stmf_get_stmf_state(stmf_state_desc_t *std) 1540 { 1541 mutex_enter(&stmf_state.stmf_lock); 1542 std->state = stmf_get_service_state(); 1543 std->config_state = stmf_state.stmf_config_state; 1544 mutex_exit(&stmf_state.stmf_lock); 1545 1546 return (0); 1547 } 1548 1549 /* 1550 * handles registration message from pppt for a logical unit 1551 */ 1552 stmf_status_t 1553 stmf_ic_lu_reg(stmf_ic_reg_dereg_lun_msg_t *msg, uint32_t type) 1554 { 1555 stmf_i_lu_provider_t *ilp; 1556 stmf_lu_provider_t *lp; 1557 mutex_enter(&stmf_state.stmf_lock); 1558 for (ilp = stmf_state.stmf_ilplist; ilp != NULL; ilp = ilp->ilp_next) { 1559 if (strcmp(msg->icrl_lu_provider_name, 1560 ilp->ilp_lp->lp_name) == 0) { 1561 lp = ilp->ilp_lp; 1562 mutex_exit(&stmf_state.stmf_lock); 1563 lp->lp_proxy_msg(msg->icrl_lun_id, msg->icrl_cb_arg, 1564 msg->icrl_cb_arg_len, type); 1565 return (STMF_SUCCESS); 1566 } 1567 } 1568 mutex_exit(&stmf_state.stmf_lock); 1569 return (STMF_SUCCESS); 1570 } 1571 1572 /* 1573 * handles de-registration message from pppt for a logical unit 1574 */ 1575 stmf_status_t 1576 stmf_ic_lu_dereg(stmf_ic_reg_dereg_lun_msg_t *msg) 1577 { 1578 stmf_i_lu_provider_t *ilp; 1579 stmf_lu_provider_t *lp; 1580 mutex_enter(&stmf_state.stmf_lock); 1581 for (ilp = stmf_state.stmf_ilplist; ilp != NULL; ilp = ilp->ilp_next) { 1582 if (strcmp(msg->icrl_lu_provider_name, 1583 ilp->ilp_lp->lp_name) == 0) { 1584 lp = ilp->ilp_lp; 1585 mutex_exit(&stmf_state.stmf_lock); 1586 lp->lp_proxy_msg(msg->icrl_lun_id, NULL, 0, 1587 STMF_MSG_LU_DEREGISTER); 1588 return (STMF_SUCCESS); 1589 } 1590 } 1591 mutex_exit(&stmf_state.stmf_lock); 1592 return (STMF_SUCCESS); 1593 } 1594 1595 /* 1596 * helper function to find a task that matches a task_msgid 1597 */ 1598 scsi_task_t * 1599 find_task_from_msgid(uint8_t *lu_id, stmf_ic_msgid_t task_msgid) 1600 { 1601 stmf_i_lu_t *ilu; 1602 stmf_i_scsi_task_t *itask; 1603 1604 mutex_enter(&stmf_state.stmf_lock); 1605 for (ilu = stmf_state.stmf_ilulist; ilu != NULL; ilu = ilu->ilu_next) { 1606 if (bcmp(lu_id, ilu->ilu_lu->lu_id->ident, 16) == 0) { 1607 break; 1608 } 1609 } 1610 1611 if (ilu == NULL) { 1612 mutex_exit(&stmf_state.stmf_lock); 1613 return (NULL); 1614 } 1615 1616 mutex_enter(&ilu->ilu_task_lock); 1617 for (itask = ilu->ilu_tasks; itask != NULL; 1618 itask = itask->itask_lu_next) { 1619 if (itask->itask_flags & (ITASK_IN_FREE_LIST | 1620 ITASK_BEING_ABORTED)) { 1621 continue; 1622 } 1623 if (itask->itask_proxy_msg_id == task_msgid) { 1624 break; 1625 } 1626 } 1627 mutex_exit(&ilu->ilu_task_lock); 1628 mutex_exit(&stmf_state.stmf_lock); 1629 1630 if (itask != NULL) { 1631 return (itask->itask_task); 1632 } else { 1633 /* task not found. Likely already aborted. */ 1634 return (NULL); 1635 } 1636 } 1637 1638 /* 1639 * message received from pppt/ic 1640 */ 1641 stmf_status_t 1642 stmf_msg_rx(stmf_ic_msg_t *msg) 1643 { 1644 mutex_enter(&stmf_state.stmf_lock); 1645 if (stmf_state.stmf_alua_state != 1) { 1646 mutex_exit(&stmf_state.stmf_lock); 1647 cmn_err(CE_WARN, "stmf alua state is disabled"); 1648 ic_msg_free(msg); 1649 return (STMF_FAILURE); 1650 } 1651 mutex_exit(&stmf_state.stmf_lock); 1652 1653 switch (msg->icm_msg_type) { 1654 case STMF_ICM_REGISTER_LUN: 1655 (void) stmf_ic_lu_reg( 1656 (stmf_ic_reg_dereg_lun_msg_t *)msg->icm_msg, 1657 STMF_MSG_LU_REGISTER); 1658 break; 1659 case STMF_ICM_LUN_ACTIVE: 1660 (void) stmf_ic_lu_reg( 1661 (stmf_ic_reg_dereg_lun_msg_t *)msg->icm_msg, 1662 STMF_MSG_LU_ACTIVE); 1663 break; 1664 case STMF_ICM_DEREGISTER_LUN: 1665 (void) stmf_ic_lu_dereg( 1666 (stmf_ic_reg_dereg_lun_msg_t *)msg->icm_msg); 1667 break; 1668 case STMF_ICM_SCSI_DATA: 1669 (void) stmf_ic_rx_scsi_data( 1670 (stmf_ic_scsi_data_msg_t *)msg->icm_msg); 1671 break; 1672 case STMF_ICM_SCSI_STATUS: 1673 (void) stmf_ic_rx_scsi_status( 1674 (stmf_ic_scsi_status_msg_t *)msg->icm_msg); 1675 break; 1676 case STMF_ICM_STATUS: 1677 (void) stmf_ic_rx_status( 1678 (stmf_ic_status_msg_t *)msg->icm_msg); 1679 break; 1680 default: 1681 cmn_err(CE_WARN, "unknown message received %d", 1682 msg->icm_msg_type); 1683 ic_msg_free(msg); 1684 return (STMF_FAILURE); 1685 } 1686 ic_msg_free(msg); 1687 return (STMF_SUCCESS); 1688 } 1689 1690 stmf_status_t 1691 stmf_ic_rx_status(stmf_ic_status_msg_t *msg) 1692 { 1693 stmf_i_local_port_t *ilport; 1694 1695 if (msg->ics_msg_type != STMF_ICM_REGISTER_PROXY_PORT) { 1696 /* for now, ignore other message status */ 1697 return (STMF_SUCCESS); 1698 } 1699 1700 if (msg->ics_status != STMF_SUCCESS) { 1701 return (STMF_SUCCESS); 1702 } 1703 1704 mutex_enter(&stmf_state.stmf_lock); 1705 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL; 1706 ilport = ilport->ilport_next) { 1707 if (msg->ics_msgid == ilport->ilport_reg_msgid) { 1708 ilport->ilport_proxy_registered = 1; 1709 break; 1710 } 1711 } 1712 mutex_exit(&stmf_state.stmf_lock); 1713 return (STMF_SUCCESS); 1714 } 1715 1716 /* 1717 * handles scsi status message from pppt 1718 */ 1719 stmf_status_t 1720 stmf_ic_rx_scsi_status(stmf_ic_scsi_status_msg_t *msg) 1721 { 1722 scsi_task_t *task; 1723 1724 /* is this a task management command */ 1725 if (msg->icss_task_msgid & MSG_ID_TM_BIT) { 1726 return (STMF_SUCCESS); 1727 } 1728 1729 task = find_task_from_msgid(msg->icss_lun_id, msg->icss_task_msgid); 1730 1731 if (task == NULL) { 1732 return (STMF_SUCCESS); 1733 } 1734 1735 task->task_scsi_status = msg->icss_status; 1736 task->task_sense_data = msg->icss_sense; 1737 task->task_sense_length = msg->icss_sense_len; 1738 (void) stmf_send_scsi_status(task, STMF_IOF_LU_DONE); 1739 1740 return (STMF_SUCCESS); 1741 } 1742 1743 /* 1744 * handles scsi data message from pppt 1745 */ 1746 stmf_status_t 1747 stmf_ic_rx_scsi_data(stmf_ic_scsi_data_msg_t *msg) 1748 { 1749 stmf_i_scsi_task_t *itask; 1750 scsi_task_t *task; 1751 stmf_xfer_data_t *xd = NULL; 1752 stmf_data_buf_t *dbuf; 1753 uint32_t sz, minsz, xd_sz, asz; 1754 1755 /* is this a task management command */ 1756 if (msg->icsd_task_msgid & MSG_ID_TM_BIT) { 1757 return (STMF_SUCCESS); 1758 } 1759 1760 task = find_task_from_msgid(msg->icsd_lun_id, msg->icsd_task_msgid); 1761 if (task == NULL) { 1762 stmf_ic_msg_t *ic_xfer_done_msg = NULL; 1763 static uint64_t data_msg_id; 1764 stmf_status_t ic_ret = STMF_FAILURE; 1765 mutex_enter(&stmf_state.stmf_lock); 1766 data_msg_id = stmf_proxy_msg_id++; 1767 mutex_exit(&stmf_state.stmf_lock); 1768 /* 1769 * send xfer done status to pppt 1770 * for now, set the session id to 0 as we cannot 1771 * ascertain it since we cannot find the task 1772 */ 1773 ic_xfer_done_msg = ic_scsi_data_xfer_done_msg_alloc( 1774 msg->icsd_task_msgid, 0, STMF_FAILURE, data_msg_id); 1775 if (ic_xfer_done_msg) { 1776 ic_ret = ic_tx_msg(ic_xfer_done_msg); 1777 if (ic_ret != STMF_IC_MSG_SUCCESS) { 1778 cmn_err(CE_WARN, "unable to xmit proxy msg"); 1779 } 1780 } 1781 return (STMF_FAILURE); 1782 } 1783 1784 itask = (stmf_i_scsi_task_t *)task->task_stmf_private; 1785 dbuf = itask->itask_proxy_dbuf; 1786 1787 task->task_cmd_xfer_length = msg->icsd_data_len; 1788 1789 if (task->task_additional_flags & 1790 TASK_AF_NO_EXPECTED_XFER_LENGTH) { 1791 task->task_expected_xfer_length = 1792 task->task_cmd_xfer_length; 1793 } 1794 1795 sz = min(task->task_expected_xfer_length, 1796 task->task_cmd_xfer_length); 1797 1798 xd_sz = msg->icsd_data_len; 1799 asz = xd_sz + sizeof (*xd) - 4; 1800 xd = (stmf_xfer_data_t *)kmem_zalloc(asz, KM_NOSLEEP); 1801 1802 if (xd == NULL) { 1803 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 1804 STMF_ALLOC_FAILURE, NULL); 1805 return (STMF_FAILURE); 1806 } 1807 1808 xd->alloc_size = asz; 1809 xd->size_left = xd_sz; 1810 bcopy(msg->icsd_data, xd->buf, xd_sz); 1811 1812 sz = min(sz, xd->size_left); 1813 xd->size_left = sz; 1814 minsz = min(512, sz); 1815 1816 if (dbuf == NULL) 1817 dbuf = stmf_alloc_dbuf(task, sz, &minsz, 0); 1818 if (dbuf == NULL) { 1819 kmem_free(xd, xd->alloc_size); 1820 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 1821 STMF_ALLOC_FAILURE, NULL); 1822 return (STMF_FAILURE); 1823 } 1824 dbuf->db_lu_private = xd; 1825 stmf_xd_to_dbuf(dbuf); 1826 1827 dbuf->db_flags = DB_DIRECTION_TO_RPORT; 1828 (void) stmf_xfer_data(task, dbuf, 0); 1829 return (STMF_SUCCESS); 1830 } 1831 1832 stmf_status_t 1833 stmf_proxy_scsi_cmd(scsi_task_t *task, stmf_data_buf_t *dbuf) 1834 { 1835 stmf_i_scsi_task_t *itask = 1836 (stmf_i_scsi_task_t *)task->task_stmf_private; 1837 stmf_i_local_port_t *ilport = 1838 (stmf_i_local_port_t *)task->task_lport->lport_stmf_private; 1839 stmf_ic_msg_t *ic_cmd_msg; 1840 stmf_ic_msg_status_t ic_ret; 1841 stmf_status_t ret = STMF_FAILURE; 1842 1843 if (stmf_state.stmf_alua_state != 1) { 1844 cmn_err(CE_WARN, "stmf alua state is disabled"); 1845 return (STMF_FAILURE); 1846 } 1847 1848 if (ilport->ilport_proxy_registered == 0) { 1849 return (STMF_FAILURE); 1850 } 1851 1852 mutex_enter(&stmf_state.stmf_lock); 1853 itask->itask_proxy_msg_id = stmf_proxy_msg_id++; 1854 mutex_exit(&stmf_state.stmf_lock); 1855 itask->itask_proxy_dbuf = dbuf; 1856 1857 /* 1858 * stmf will now take over the task handling for this task 1859 * but it still needs to be treated differently from other 1860 * default handled tasks, hence the ITASK_PROXY_TASK. 1861 * If this is a task management function, we're really just 1862 * duping the command to the peer. Set the TM bit so that 1863 * we can recognize this on return since we won't be completing 1864 * the proxied task in that case. 1865 */ 1866 if (task->task_mgmt_function) { 1867 itask->itask_proxy_msg_id |= MSG_ID_TM_BIT; 1868 } else { 1869 itask->itask_flags |= ITASK_DEFAULT_HANDLING | ITASK_PROXY_TASK; 1870 } 1871 if (dbuf) { 1872 ic_cmd_msg = ic_scsi_cmd_msg_alloc(itask->itask_proxy_msg_id, 1873 task, dbuf->db_data_size, dbuf->db_sglist[0].seg_addr, 1874 itask->itask_proxy_msg_id); 1875 } else { 1876 ic_cmd_msg = ic_scsi_cmd_msg_alloc(itask->itask_proxy_msg_id, 1877 task, 0, NULL, itask->itask_proxy_msg_id); 1878 } 1879 if (ic_cmd_msg) { 1880 ic_ret = ic_tx_msg(ic_cmd_msg); 1881 if (ic_ret == STMF_IC_MSG_SUCCESS) { 1882 ret = STMF_SUCCESS; 1883 } 1884 } 1885 return (ret); 1886 } 1887 1888 1889 stmf_status_t 1890 pppt_modload() 1891 { 1892 int error; 1893 1894 if (pppt_mod == NULL && ((pppt_mod = 1895 ddi_modopen("drv/pppt", KRTLD_MODE_FIRST, &error)) == NULL)) { 1896 cmn_err(CE_WARN, "Unable to load pppt"); 1897 return (STMF_FAILURE); 1898 } 1899 1900 if (ic_reg_port_msg_alloc == NULL && ((ic_reg_port_msg_alloc = 1901 (stmf_ic_reg_port_msg_alloc_func_t) 1902 ddi_modsym(pppt_mod, "stmf_ic_reg_port_msg_alloc", 1903 &error)) == NULL)) { 1904 cmn_err(CE_WARN, 1905 "Unable to find symbol - stmf_ic_reg_port_msg_alloc"); 1906 return (STMF_FAILURE); 1907 } 1908 1909 1910 if (ic_dereg_port_msg_alloc == NULL && ((ic_dereg_port_msg_alloc = 1911 (stmf_ic_dereg_port_msg_alloc_func_t) 1912 ddi_modsym(pppt_mod, "stmf_ic_dereg_port_msg_alloc", 1913 &error)) == NULL)) { 1914 cmn_err(CE_WARN, 1915 "Unable to find symbol - stmf_ic_dereg_port_msg_alloc"); 1916 return (STMF_FAILURE); 1917 } 1918 1919 if (ic_reg_lun_msg_alloc == NULL && ((ic_reg_lun_msg_alloc = 1920 (stmf_ic_reg_lun_msg_alloc_func_t) 1921 ddi_modsym(pppt_mod, "stmf_ic_reg_lun_msg_alloc", 1922 &error)) == NULL)) { 1923 cmn_err(CE_WARN, 1924 "Unable to find symbol - stmf_ic_reg_lun_msg_alloc"); 1925 return (STMF_FAILURE); 1926 } 1927 1928 if (ic_lun_active_msg_alloc == NULL && ((ic_lun_active_msg_alloc = 1929 (stmf_ic_lun_active_msg_alloc_func_t) 1930 ddi_modsym(pppt_mod, "stmf_ic_lun_active_msg_alloc", 1931 &error)) == NULL)) { 1932 cmn_err(CE_WARN, 1933 "Unable to find symbol - stmf_ic_lun_active_msg_alloc"); 1934 return (STMF_FAILURE); 1935 } 1936 1937 if (ic_dereg_lun_msg_alloc == NULL && ((ic_dereg_lun_msg_alloc = 1938 (stmf_ic_dereg_lun_msg_alloc_func_t) 1939 ddi_modsym(pppt_mod, "stmf_ic_dereg_lun_msg_alloc", 1940 &error)) == NULL)) { 1941 cmn_err(CE_WARN, 1942 "Unable to find symbol - stmf_ic_dereg_lun_msg_alloc"); 1943 return (STMF_FAILURE); 1944 } 1945 1946 if (ic_scsi_cmd_msg_alloc == NULL && ((ic_scsi_cmd_msg_alloc = 1947 (stmf_ic_scsi_cmd_msg_alloc_func_t) 1948 ddi_modsym(pppt_mod, "stmf_ic_scsi_cmd_msg_alloc", 1949 &error)) == NULL)) { 1950 cmn_err(CE_WARN, 1951 "Unable to find symbol - stmf_ic_scsi_cmd_msg_alloc"); 1952 return (STMF_FAILURE); 1953 } 1954 1955 if (ic_scsi_data_xfer_done_msg_alloc == NULL && 1956 ((ic_scsi_data_xfer_done_msg_alloc = 1957 (stmf_ic_scsi_data_xfer_done_msg_alloc_func_t) 1958 ddi_modsym(pppt_mod, "stmf_ic_scsi_data_xfer_done_msg_alloc", 1959 &error)) == NULL)) { 1960 cmn_err(CE_WARN, 1961 "Unable to find symbol -" 1962 "stmf_ic_scsi_data_xfer_done_msg_alloc"); 1963 return (STMF_FAILURE); 1964 } 1965 1966 if (ic_session_reg_msg_alloc == NULL && 1967 ((ic_session_reg_msg_alloc = 1968 (stmf_ic_session_create_msg_alloc_func_t) 1969 ddi_modsym(pppt_mod, "stmf_ic_session_create_msg_alloc", 1970 &error)) == NULL)) { 1971 cmn_err(CE_WARN, 1972 "Unable to find symbol -" 1973 "stmf_ic_session_create_msg_alloc"); 1974 return (STMF_FAILURE); 1975 } 1976 1977 if (ic_session_dereg_msg_alloc == NULL && 1978 ((ic_session_dereg_msg_alloc = 1979 (stmf_ic_session_destroy_msg_alloc_func_t) 1980 ddi_modsym(pppt_mod, "stmf_ic_session_destroy_msg_alloc", 1981 &error)) == NULL)) { 1982 cmn_err(CE_WARN, 1983 "Unable to find symbol -" 1984 "stmf_ic_session_destroy_msg_alloc"); 1985 return (STMF_FAILURE); 1986 } 1987 1988 if (ic_tx_msg == NULL && ((ic_tx_msg = 1989 (stmf_ic_tx_msg_func_t)ddi_modsym(pppt_mod, "stmf_ic_tx_msg", 1990 &error)) == NULL)) { 1991 cmn_err(CE_WARN, "Unable to find symbol - stmf_ic_tx_msg"); 1992 return (STMF_FAILURE); 1993 } 1994 1995 if (ic_msg_free == NULL && ((ic_msg_free = 1996 (stmf_ic_msg_free_func_t)ddi_modsym(pppt_mod, "stmf_ic_msg_free", 1997 &error)) == NULL)) { 1998 cmn_err(CE_WARN, "Unable to find symbol - stmf_ic_msg_free"); 1999 return (STMF_FAILURE); 2000 } 2001 return (STMF_SUCCESS); 2002 } 2003 2004 static void 2005 stmf_get_alua_state(stmf_alua_state_desc_t *alua_state) 2006 { 2007 mutex_enter(&stmf_state.stmf_lock); 2008 alua_state->alua_node = stmf_state.stmf_alua_node; 2009 alua_state->alua_state = stmf_state.stmf_alua_state; 2010 mutex_exit(&stmf_state.stmf_lock); 2011 } 2012 2013 2014 static int 2015 stmf_set_alua_state(stmf_alua_state_desc_t *alua_state) 2016 { 2017 stmf_i_local_port_t *ilport; 2018 stmf_i_lu_t *ilu; 2019 stmf_lu_t *lu; 2020 stmf_ic_msg_status_t ic_ret; 2021 stmf_ic_msg_t *ic_reg_lun, *ic_reg_port; 2022 stmf_local_port_t *lport; 2023 int ret = 0; 2024 2025 if (alua_state->alua_state > 1 || alua_state->alua_node > 1) { 2026 return (EINVAL); 2027 } 2028 2029 mutex_enter(&stmf_state.stmf_lock); 2030 if (alua_state->alua_state == 1) { 2031 if (pppt_modload() == STMF_FAILURE) { 2032 ret = EIO; 2033 goto err; 2034 } 2035 if (alua_state->alua_node != 0) { 2036 /* reset existing rtpids to new base */ 2037 stmf_rtpid_counter = 255; 2038 } 2039 stmf_state.stmf_alua_node = alua_state->alua_node; 2040 stmf_state.stmf_alua_state = 1; 2041 /* register existing local ports with ppp */ 2042 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL; 2043 ilport = ilport->ilport_next) { 2044 /* skip standby ports and non-alua participants */ 2045 if (ilport->ilport_standby == 1 || 2046 ilport->ilport_alua == 0) { 2047 continue; 2048 } 2049 if (alua_state->alua_node != 0) { 2050 ilport->ilport_rtpid = 2051 atomic_add_16_nv(&stmf_rtpid_counter, 1); 2052 } 2053 lport = ilport->ilport_lport; 2054 ic_reg_port = ic_reg_port_msg_alloc( 2055 lport->lport_id, ilport->ilport_rtpid, 2056 0, NULL, stmf_proxy_msg_id); 2057 if (ic_reg_port) { 2058 ic_ret = ic_tx_msg(ic_reg_port); 2059 if (ic_ret == STMF_IC_MSG_SUCCESS) { 2060 ilport->ilport_reg_msgid = 2061 stmf_proxy_msg_id++; 2062 } else { 2063 cmn_err(CE_WARN, 2064 "error on port registration " 2065 "port - %s", 2066 ilport->ilport_kstat_tgt_name); 2067 } 2068 } 2069 } 2070 /* register existing logical units */ 2071 for (ilu = stmf_state.stmf_ilulist; ilu != NULL; 2072 ilu = ilu->ilu_next) { 2073 if (ilu->ilu_access != STMF_LU_ACTIVE) { 2074 continue; 2075 } 2076 /* register with proxy module */ 2077 lu = ilu->ilu_lu; 2078 if (lu->lu_lp && lu->lu_lp->lp_lpif_rev == LPIF_REV_2 && 2079 lu->lu_lp->lp_alua_support) { 2080 ilu->ilu_alua = 1; 2081 /* allocate the register message */ 2082 ic_reg_lun = ic_reg_lun_msg_alloc( 2083 lu->lu_id->ident, lu->lu_lp->lp_name, 2084 lu->lu_proxy_reg_arg_len, 2085 (uint8_t *)lu->lu_proxy_reg_arg, 2086 stmf_proxy_msg_id); 2087 /* send the message */ 2088 if (ic_reg_lun) { 2089 ic_ret = ic_tx_msg(ic_reg_lun); 2090 if (ic_ret == STMF_IC_MSG_SUCCESS) { 2091 stmf_proxy_msg_id++; 2092 } 2093 } 2094 } 2095 } 2096 } else { 2097 stmf_state.stmf_alua_state = 0; 2098 } 2099 2100 err: 2101 mutex_exit(&stmf_state.stmf_lock); 2102 return (ret); 2103 } 2104 2105 2106 typedef struct { 2107 void *bp; /* back pointer from internal struct to main struct */ 2108 int alloc_size; 2109 } __istmf_t; 2110 2111 typedef struct { 2112 __istmf_t *fp; /* Framework private */ 2113 void *cp; /* Caller private */ 2114 void *ss; /* struct specific */ 2115 } __stmf_t; 2116 2117 static struct { 2118 int shared; 2119 int fw_private; 2120 } stmf_sizes[] = { { 0, 0 }, 2121 { GET_STRUCT_SIZE(stmf_lu_provider_t), 2122 GET_STRUCT_SIZE(stmf_i_lu_provider_t) }, 2123 { GET_STRUCT_SIZE(stmf_port_provider_t), 2124 GET_STRUCT_SIZE(stmf_i_port_provider_t) }, 2125 { GET_STRUCT_SIZE(stmf_local_port_t), 2126 GET_STRUCT_SIZE(stmf_i_local_port_t) }, 2127 { GET_STRUCT_SIZE(stmf_lu_t), 2128 GET_STRUCT_SIZE(stmf_i_lu_t) }, 2129 { GET_STRUCT_SIZE(stmf_scsi_session_t), 2130 GET_STRUCT_SIZE(stmf_i_scsi_session_t) }, 2131 { GET_STRUCT_SIZE(scsi_task_t), 2132 GET_STRUCT_SIZE(stmf_i_scsi_task_t) }, 2133 { GET_STRUCT_SIZE(stmf_data_buf_t), 2134 GET_STRUCT_SIZE(__istmf_t) }, 2135 { GET_STRUCT_SIZE(stmf_dbuf_store_t), 2136 GET_STRUCT_SIZE(__istmf_t) } 2137 2138 }; 2139 2140 void * 2141 stmf_alloc(stmf_struct_id_t struct_id, int additional_size, int flags) 2142 { 2143 int stmf_size; 2144 int kmem_flag; 2145 __stmf_t *sh; 2146 2147 if ((struct_id == 0) || (struct_id >= STMF_MAX_STRUCT_IDS)) 2148 return (NULL); 2149 2150 if ((curthread->t_flag & T_INTR_THREAD) || (flags & AF_FORCE_NOSLEEP)) { 2151 kmem_flag = KM_NOSLEEP; 2152 } else { 2153 kmem_flag = KM_SLEEP; 2154 } 2155 2156 additional_size = (additional_size + 7) & (~7); 2157 stmf_size = stmf_sizes[struct_id].shared + 2158 stmf_sizes[struct_id].fw_private + additional_size; 2159 2160 sh = (__stmf_t *)kmem_zalloc(stmf_size, kmem_flag); 2161 2162 if (sh == NULL) 2163 return (NULL); 2164 2165 /* 2166 * In principle, the implementation inside stmf_alloc should not 2167 * be changed anyway. But the original order of framework private 2168 * data and caller private data does not support sglist in the caller 2169 * private data. 2170 * To work around this, the memory segments of framework private 2171 * data and caller private data are re-ordered here. 2172 * A better solution is to provide a specific interface to allocate 2173 * the sglist, then we will not need this workaround any more. 2174 * But before the new interface is available, the memory segment 2175 * ordering should be kept as is. 2176 */ 2177 sh->cp = GET_BYTE_OFFSET(sh, stmf_sizes[struct_id].shared); 2178 sh->fp = (__istmf_t *)GET_BYTE_OFFSET(sh, 2179 stmf_sizes[struct_id].shared + additional_size); 2180 2181 sh->fp->bp = sh; 2182 /* Just store the total size instead of storing additional size */ 2183 sh->fp->alloc_size = stmf_size; 2184 2185 return (sh); 2186 } 2187 2188 void 2189 stmf_free(void *ptr) 2190 { 2191 __stmf_t *sh = (__stmf_t *)ptr; 2192 2193 /* 2194 * So far we dont need any struct specific processing. If such 2195 * a need ever arises, then store the struct id in the framework 2196 * private section and get it here as sh->fp->struct_id. 2197 */ 2198 kmem_free(ptr, sh->fp->alloc_size); 2199 } 2200 2201 /* 2202 * Given a pointer to stmf_lu_t, verifies if this lu is registered with the 2203 * framework and returns a pointer to framework private data for the lu. 2204 * Returns NULL if the lu was not found. 2205 */ 2206 stmf_i_lu_t * 2207 stmf_lookup_lu(stmf_lu_t *lu) 2208 { 2209 stmf_i_lu_t *ilu; 2210 ASSERT(mutex_owned(&stmf_state.stmf_lock)); 2211 2212 for (ilu = stmf_state.stmf_ilulist; ilu != NULL; ilu = ilu->ilu_next) { 2213 if (ilu->ilu_lu == lu) 2214 return (ilu); 2215 } 2216 return (NULL); 2217 } 2218 2219 /* 2220 * Given a pointer to stmf_local_port_t, verifies if this lport is registered 2221 * with the framework and returns a pointer to framework private data for 2222 * the lport. 2223 * Returns NULL if the lport was not found. 2224 */ 2225 stmf_i_local_port_t * 2226 stmf_lookup_lport(stmf_local_port_t *lport) 2227 { 2228 stmf_i_local_port_t *ilport; 2229 ASSERT(mutex_owned(&stmf_state.stmf_lock)); 2230 2231 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL; 2232 ilport = ilport->ilport_next) { 2233 if (ilport->ilport_lport == lport) 2234 return (ilport); 2235 } 2236 return (NULL); 2237 } 2238 2239 stmf_status_t 2240 stmf_register_lu_provider(stmf_lu_provider_t *lp) 2241 { 2242 stmf_i_lu_provider_t *ilp = (stmf_i_lu_provider_t *)lp->lp_stmf_private; 2243 stmf_pp_data_t *ppd; 2244 uint32_t cb_flags; 2245 2246 if (lp->lp_lpif_rev != LPIF_REV_1 && lp->lp_lpif_rev != LPIF_REV_2) 2247 return (STMF_FAILURE); 2248 2249 mutex_enter(&stmf_state.stmf_lock); 2250 ilp->ilp_next = stmf_state.stmf_ilplist; 2251 stmf_state.stmf_ilplist = ilp; 2252 stmf_state.stmf_nlps++; 2253 2254 /* See if we need to do a callback */ 2255 for (ppd = stmf_state.stmf_ppdlist; ppd != NULL; ppd = ppd->ppd_next) { 2256 if (strcmp(ppd->ppd_name, lp->lp_name) == 0) { 2257 break; 2258 } 2259 } 2260 if ((ppd == NULL) || (ppd->ppd_nv == NULL)) { 2261 goto rlp_bail_out; 2262 } 2263 ilp->ilp_ppd = ppd; 2264 ppd->ppd_provider = ilp; 2265 if (lp->lp_cb == NULL) 2266 goto rlp_bail_out; 2267 ilp->ilp_cb_in_progress = 1; 2268 cb_flags = STMF_PCB_PREG_COMPLETE; 2269 if (stmf_state.stmf_config_state == STMF_CONFIG_INIT) 2270 cb_flags |= STMF_PCB_STMF_ONLINING; 2271 mutex_exit(&stmf_state.stmf_lock); 2272 lp->lp_cb(lp, STMF_PROVIDER_DATA_UPDATED, ppd->ppd_nv, cb_flags); 2273 mutex_enter(&stmf_state.stmf_lock); 2274 ilp->ilp_cb_in_progress = 0; 2275 2276 rlp_bail_out: 2277 mutex_exit(&stmf_state.stmf_lock); 2278 2279 return (STMF_SUCCESS); 2280 } 2281 2282 stmf_status_t 2283 stmf_deregister_lu_provider(stmf_lu_provider_t *lp) 2284 { 2285 stmf_i_lu_provider_t **ppilp; 2286 stmf_i_lu_provider_t *ilp = (stmf_i_lu_provider_t *)lp->lp_stmf_private; 2287 2288 mutex_enter(&stmf_state.stmf_lock); 2289 if (ilp->ilp_nlus || ilp->ilp_cb_in_progress) { 2290 mutex_exit(&stmf_state.stmf_lock); 2291 return (STMF_BUSY); 2292 } 2293 for (ppilp = &stmf_state.stmf_ilplist; *ppilp != NULL; 2294 ppilp = &((*ppilp)->ilp_next)) { 2295 if (*ppilp == ilp) { 2296 *ppilp = ilp->ilp_next; 2297 stmf_state.stmf_nlps--; 2298 if (ilp->ilp_ppd) { 2299 ilp->ilp_ppd->ppd_provider = NULL; 2300 ilp->ilp_ppd = NULL; 2301 } 2302 mutex_exit(&stmf_state.stmf_lock); 2303 return (STMF_SUCCESS); 2304 } 2305 } 2306 mutex_exit(&stmf_state.stmf_lock); 2307 return (STMF_NOT_FOUND); 2308 } 2309 2310 stmf_status_t 2311 stmf_register_port_provider(stmf_port_provider_t *pp) 2312 { 2313 stmf_i_port_provider_t *ipp = 2314 (stmf_i_port_provider_t *)pp->pp_stmf_private; 2315 stmf_pp_data_t *ppd; 2316 uint32_t cb_flags; 2317 2318 if (pp->pp_portif_rev != PORTIF_REV_1) 2319 return (STMF_FAILURE); 2320 2321 mutex_enter(&stmf_state.stmf_lock); 2322 ipp->ipp_next = stmf_state.stmf_ipplist; 2323 stmf_state.stmf_ipplist = ipp; 2324 stmf_state.stmf_npps++; 2325 /* See if we need to do a callback */ 2326 for (ppd = stmf_state.stmf_ppdlist; ppd != NULL; ppd = ppd->ppd_next) { 2327 if (strcmp(ppd->ppd_name, pp->pp_name) == 0) { 2328 break; 2329 } 2330 } 2331 if ((ppd == NULL) || (ppd->ppd_nv == NULL)) { 2332 goto rpp_bail_out; 2333 } 2334 ipp->ipp_ppd = ppd; 2335 ppd->ppd_provider = ipp; 2336 if (pp->pp_cb == NULL) 2337 goto rpp_bail_out; 2338 ipp->ipp_cb_in_progress = 1; 2339 cb_flags = STMF_PCB_PREG_COMPLETE; 2340 if (stmf_state.stmf_config_state == STMF_CONFIG_INIT) 2341 cb_flags |= STMF_PCB_STMF_ONLINING; 2342 mutex_exit(&stmf_state.stmf_lock); 2343 pp->pp_cb(pp, STMF_PROVIDER_DATA_UPDATED, ppd->ppd_nv, cb_flags); 2344 mutex_enter(&stmf_state.stmf_lock); 2345 ipp->ipp_cb_in_progress = 0; 2346 2347 rpp_bail_out: 2348 mutex_exit(&stmf_state.stmf_lock); 2349 2350 return (STMF_SUCCESS); 2351 } 2352 2353 stmf_status_t 2354 stmf_deregister_port_provider(stmf_port_provider_t *pp) 2355 { 2356 stmf_i_port_provider_t *ipp = 2357 (stmf_i_port_provider_t *)pp->pp_stmf_private; 2358 stmf_i_port_provider_t **ppipp; 2359 2360 mutex_enter(&stmf_state.stmf_lock); 2361 if (ipp->ipp_npps || ipp->ipp_cb_in_progress) { 2362 mutex_exit(&stmf_state.stmf_lock); 2363 return (STMF_BUSY); 2364 } 2365 for (ppipp = &stmf_state.stmf_ipplist; *ppipp != NULL; 2366 ppipp = &((*ppipp)->ipp_next)) { 2367 if (*ppipp == ipp) { 2368 *ppipp = ipp->ipp_next; 2369 stmf_state.stmf_npps--; 2370 if (ipp->ipp_ppd) { 2371 ipp->ipp_ppd->ppd_provider = NULL; 2372 ipp->ipp_ppd = NULL; 2373 } 2374 mutex_exit(&stmf_state.stmf_lock); 2375 return (STMF_SUCCESS); 2376 } 2377 } 2378 mutex_exit(&stmf_state.stmf_lock); 2379 return (STMF_NOT_FOUND); 2380 } 2381 2382 int 2383 stmf_load_ppd_ioctl(stmf_ppioctl_data_t *ppi, uint64_t *ppi_token, 2384 uint32_t *err_ret) 2385 { 2386 stmf_i_port_provider_t *ipp; 2387 stmf_i_lu_provider_t *ilp; 2388 stmf_pp_data_t *ppd; 2389 nvlist_t *nv; 2390 int s; 2391 int ret; 2392 2393 *err_ret = 0; 2394 2395 if ((ppi->ppi_lu_provider + ppi->ppi_port_provider) != 1) { 2396 return (EINVAL); 2397 } 2398 2399 mutex_enter(&stmf_state.stmf_lock); 2400 for (ppd = stmf_state.stmf_ppdlist; ppd != NULL; ppd = ppd->ppd_next) { 2401 if (ppi->ppi_lu_provider) { 2402 if (!ppd->ppd_lu_provider) 2403 continue; 2404 } else if (ppi->ppi_port_provider) { 2405 if (!ppd->ppd_port_provider) 2406 continue; 2407 } 2408 if (strncmp(ppi->ppi_name, ppd->ppd_name, 254) == 0) 2409 break; 2410 } 2411 2412 if (ppd == NULL) { 2413 /* New provider */ 2414 s = strlen(ppi->ppi_name); 2415 if (s > 254) { 2416 mutex_exit(&stmf_state.stmf_lock); 2417 return (EINVAL); 2418 } 2419 s += sizeof (stmf_pp_data_t) - 7; 2420 2421 ppd = kmem_zalloc(s, KM_NOSLEEP); 2422 if (ppd == NULL) { 2423 mutex_exit(&stmf_state.stmf_lock); 2424 return (ENOMEM); 2425 } 2426 ppd->ppd_alloc_size = s; 2427 (void) strcpy(ppd->ppd_name, ppi->ppi_name); 2428 2429 /* See if this provider already exists */ 2430 if (ppi->ppi_lu_provider) { 2431 ppd->ppd_lu_provider = 1; 2432 for (ilp = stmf_state.stmf_ilplist; ilp != NULL; 2433 ilp = ilp->ilp_next) { 2434 if (strcmp(ppi->ppi_name, 2435 ilp->ilp_lp->lp_name) == 0) { 2436 ppd->ppd_provider = ilp; 2437 ilp->ilp_ppd = ppd; 2438 break; 2439 } 2440 } 2441 } else { 2442 ppd->ppd_port_provider = 1; 2443 for (ipp = stmf_state.stmf_ipplist; ipp != NULL; 2444 ipp = ipp->ipp_next) { 2445 if (strcmp(ppi->ppi_name, 2446 ipp->ipp_pp->pp_name) == 0) { 2447 ppd->ppd_provider = ipp; 2448 ipp->ipp_ppd = ppd; 2449 break; 2450 } 2451 } 2452 } 2453 2454 /* Link this ppd in */ 2455 ppd->ppd_next = stmf_state.stmf_ppdlist; 2456 stmf_state.stmf_ppdlist = ppd; 2457 } 2458 2459 /* 2460 * User is requesting that the token be checked. 2461 * If there was another set after the user's get 2462 * it's an error 2463 */ 2464 if (ppi->ppi_token_valid) { 2465 if (ppi->ppi_token != ppd->ppd_token) { 2466 *err_ret = STMF_IOCERR_PPD_UPDATED; 2467 mutex_exit(&stmf_state.stmf_lock); 2468 return (EINVAL); 2469 } 2470 } 2471 2472 if ((ret = nvlist_unpack((char *)ppi->ppi_data, 2473 (size_t)ppi->ppi_data_size, &nv, KM_NOSLEEP)) != 0) { 2474 mutex_exit(&stmf_state.stmf_lock); 2475 return (ret); 2476 } 2477 2478 /* Free any existing lists and add this one to the ppd */ 2479 if (ppd->ppd_nv) 2480 nvlist_free(ppd->ppd_nv); 2481 ppd->ppd_nv = nv; 2482 2483 /* set the token for writes */ 2484 ppd->ppd_token++; 2485 /* return token to caller */ 2486 if (ppi_token) { 2487 *ppi_token = ppd->ppd_token; 2488 } 2489 2490 /* If there is a provider registered, do the notifications */ 2491 if (ppd->ppd_provider) { 2492 uint32_t cb_flags = 0; 2493 2494 if (stmf_state.stmf_config_state == STMF_CONFIG_INIT) 2495 cb_flags |= STMF_PCB_STMF_ONLINING; 2496 if (ppi->ppi_lu_provider) { 2497 ilp = (stmf_i_lu_provider_t *)ppd->ppd_provider; 2498 if (ilp->ilp_lp->lp_cb == NULL) 2499 goto bail_out; 2500 ilp->ilp_cb_in_progress = 1; 2501 mutex_exit(&stmf_state.stmf_lock); 2502 ilp->ilp_lp->lp_cb(ilp->ilp_lp, 2503 STMF_PROVIDER_DATA_UPDATED, ppd->ppd_nv, cb_flags); 2504 mutex_enter(&stmf_state.stmf_lock); 2505 ilp->ilp_cb_in_progress = 0; 2506 } else { 2507 ipp = (stmf_i_port_provider_t *)ppd->ppd_provider; 2508 if (ipp->ipp_pp->pp_cb == NULL) 2509 goto bail_out; 2510 ipp->ipp_cb_in_progress = 1; 2511 mutex_exit(&stmf_state.stmf_lock); 2512 ipp->ipp_pp->pp_cb(ipp->ipp_pp, 2513 STMF_PROVIDER_DATA_UPDATED, ppd->ppd_nv, cb_flags); 2514 mutex_enter(&stmf_state.stmf_lock); 2515 ipp->ipp_cb_in_progress = 0; 2516 } 2517 } 2518 2519 bail_out: 2520 mutex_exit(&stmf_state.stmf_lock); 2521 2522 return (0); 2523 } 2524 2525 void 2526 stmf_delete_ppd(stmf_pp_data_t *ppd) 2527 { 2528 stmf_pp_data_t **pppd; 2529 2530 ASSERT(mutex_owned(&stmf_state.stmf_lock)); 2531 if (ppd->ppd_provider) { 2532 if (ppd->ppd_lu_provider) { 2533 ((stmf_i_lu_provider_t *) 2534 ppd->ppd_provider)->ilp_ppd = NULL; 2535 } else { 2536 ((stmf_i_port_provider_t *) 2537 ppd->ppd_provider)->ipp_ppd = NULL; 2538 } 2539 ppd->ppd_provider = NULL; 2540 } 2541 2542 for (pppd = &stmf_state.stmf_ppdlist; *pppd != NULL; 2543 pppd = &((*pppd)->ppd_next)) { 2544 if (*pppd == ppd) 2545 break; 2546 } 2547 2548 if (*pppd == NULL) 2549 return; 2550 2551 *pppd = ppd->ppd_next; 2552 if (ppd->ppd_nv) 2553 nvlist_free(ppd->ppd_nv); 2554 2555 kmem_free(ppd, ppd->ppd_alloc_size); 2556 } 2557 2558 int 2559 stmf_delete_ppd_ioctl(stmf_ppioctl_data_t *ppi) 2560 { 2561 stmf_pp_data_t *ppd; 2562 int ret = ENOENT; 2563 2564 if ((ppi->ppi_lu_provider + ppi->ppi_port_provider) != 1) { 2565 return (EINVAL); 2566 } 2567 2568 mutex_enter(&stmf_state.stmf_lock); 2569 2570 for (ppd = stmf_state.stmf_ppdlist; ppd != NULL; ppd = ppd->ppd_next) { 2571 if (ppi->ppi_lu_provider) { 2572 if (!ppd->ppd_lu_provider) 2573 continue; 2574 } else if (ppi->ppi_port_provider) { 2575 if (!ppd->ppd_port_provider) 2576 continue; 2577 } 2578 if (strncmp(ppi->ppi_name, ppd->ppd_name, 254) == 0) 2579 break; 2580 } 2581 2582 if (ppd) { 2583 ret = 0; 2584 stmf_delete_ppd(ppd); 2585 } 2586 mutex_exit(&stmf_state.stmf_lock); 2587 2588 return (ret); 2589 } 2590 2591 int 2592 stmf_get_ppd_ioctl(stmf_ppioctl_data_t *ppi, stmf_ppioctl_data_t *ppi_out, 2593 uint32_t *err_ret) 2594 { 2595 stmf_pp_data_t *ppd; 2596 size_t req_size; 2597 int ret = ENOENT; 2598 char *bufp = (char *)ppi_out->ppi_data; 2599 2600 if ((ppi->ppi_lu_provider + ppi->ppi_port_provider) != 1) { 2601 return (EINVAL); 2602 } 2603 2604 mutex_enter(&stmf_state.stmf_lock); 2605 2606 for (ppd = stmf_state.stmf_ppdlist; ppd != NULL; ppd = ppd->ppd_next) { 2607 if (ppi->ppi_lu_provider) { 2608 if (!ppd->ppd_lu_provider) 2609 continue; 2610 } else if (ppi->ppi_port_provider) { 2611 if (!ppd->ppd_port_provider) 2612 continue; 2613 } 2614 if (strncmp(ppi->ppi_name, ppd->ppd_name, 254) == 0) 2615 break; 2616 } 2617 2618 if (ppd && ppd->ppd_nv) { 2619 ppi_out->ppi_token = ppd->ppd_token; 2620 if ((ret = nvlist_size(ppd->ppd_nv, &req_size, 2621 NV_ENCODE_XDR)) != 0) { 2622 goto done; 2623 } 2624 ppi_out->ppi_data_size = req_size; 2625 if (req_size > ppi->ppi_data_size) { 2626 *err_ret = STMF_IOCERR_INSUFFICIENT_BUF; 2627 ret = EINVAL; 2628 goto done; 2629 } 2630 2631 if ((ret = nvlist_pack(ppd->ppd_nv, &bufp, &req_size, 2632 NV_ENCODE_XDR, 0)) != 0) { 2633 goto done; 2634 } 2635 ret = 0; 2636 } 2637 2638 done: 2639 mutex_exit(&stmf_state.stmf_lock); 2640 2641 return (ret); 2642 } 2643 2644 void 2645 stmf_delete_all_ppds() 2646 { 2647 stmf_pp_data_t *ppd, *nppd; 2648 2649 ASSERT(mutex_owned(&stmf_state.stmf_lock)); 2650 for (ppd = stmf_state.stmf_ppdlist; ppd != NULL; ppd = nppd) { 2651 nppd = ppd->ppd_next; 2652 stmf_delete_ppd(ppd); 2653 } 2654 } 2655 2656 /* 2657 * 16 is the max string length of a protocol_ident, increase 2658 * the size if needed. 2659 */ 2660 #define STMF_KSTAT_LU_SZ (STMF_GUID_INPUT + 1 + 256) 2661 #define STMF_KSTAT_TGT_SZ (256 * 2 + 16) 2662 2663 /* 2664 * This array matches the Protocol Identifier in stmf_ioctl.h 2665 */ 2666 #define MAX_PROTO_STR_LEN 32 2667 2668 char *protocol_ident[PROTOCOL_ANY] = { 2669 "Fibre Channel", 2670 "Parallel SCSI", 2671 "SSA", 2672 "IEEE_1394", 2673 "SRP", 2674 "iSCSI", 2675 "SAS", 2676 "ADT", 2677 "ATAPI", 2678 "UNKNOWN", "UNKNOWN", "UNKNOWN", "UNKNOWN", "UNKNOWN", "UNKNOWN" 2679 }; 2680 2681 /* 2682 * Update the lun wait/run queue count 2683 */ 2684 static void 2685 stmf_update_kstat_lu_q(scsi_task_t *task, void func()) 2686 { 2687 stmf_i_lu_t *ilu; 2688 kstat_io_t *kip; 2689 2690 if (task->task_lu == dlun0) 2691 return; 2692 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 2693 if (ilu != NULL && ilu->ilu_kstat_io != NULL) { 2694 kip = KSTAT_IO_PTR(ilu->ilu_kstat_io); 2695 if (kip != NULL) { 2696 func(kip); 2697 } 2698 } 2699 } 2700 2701 /* 2702 * Update the target(lport) wait/run queue count 2703 */ 2704 static void 2705 stmf_update_kstat_lport_q(scsi_task_t *task, void func()) 2706 { 2707 stmf_i_local_port_t *ilp; 2708 kstat_io_t *kip; 2709 2710 ilp = (stmf_i_local_port_t *)task->task_lport->lport_stmf_private; 2711 if (ilp != NULL && ilp->ilport_kstat_io != NULL) { 2712 kip = KSTAT_IO_PTR(ilp->ilport_kstat_io); 2713 if (kip != NULL) { 2714 mutex_enter(ilp->ilport_kstat_io->ks_lock); 2715 func(kip); 2716 mutex_exit(ilp->ilport_kstat_io->ks_lock); 2717 } 2718 } 2719 } 2720 2721 static void 2722 stmf_update_kstat_lport_io(scsi_task_t *task, stmf_data_buf_t *dbuf) 2723 { 2724 stmf_i_local_port_t *ilp; 2725 kstat_io_t *kip; 2726 2727 ilp = (stmf_i_local_port_t *)task->task_lport->lport_stmf_private; 2728 if (ilp != NULL && ilp->ilport_kstat_io != NULL) { 2729 kip = KSTAT_IO_PTR(ilp->ilport_kstat_io); 2730 if (kip != NULL) { 2731 mutex_enter(ilp->ilport_kstat_io->ks_lock); 2732 STMF_UPDATE_KSTAT_IO(kip, dbuf); 2733 mutex_exit(ilp->ilport_kstat_io->ks_lock); 2734 } 2735 } 2736 } 2737 2738 static void 2739 stmf_update_kstat_lu_io(scsi_task_t *task, stmf_data_buf_t *dbuf) 2740 { 2741 stmf_i_lu_t *ilu; 2742 kstat_io_t *kip; 2743 2744 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 2745 if (ilu != NULL && ilu->ilu_kstat_io != NULL) { 2746 kip = KSTAT_IO_PTR(ilu->ilu_kstat_io); 2747 if (kip != NULL) { 2748 mutex_enter(ilu->ilu_kstat_io->ks_lock); 2749 STMF_UPDATE_KSTAT_IO(kip, dbuf); 2750 mutex_exit(ilu->ilu_kstat_io->ks_lock); 2751 } 2752 } 2753 } 2754 2755 static void 2756 stmf_create_kstat_lu(stmf_i_lu_t *ilu) 2757 { 2758 char ks_nm[KSTAT_STRLEN]; 2759 stmf_kstat_lu_info_t *ks_lu; 2760 2761 /* create kstat lun info */ 2762 ks_lu = (stmf_kstat_lu_info_t *)kmem_zalloc(STMF_KSTAT_LU_SZ, 2763 KM_NOSLEEP); 2764 if (ks_lu == NULL) { 2765 cmn_err(CE_WARN, "STMF: kmem_zalloc failed"); 2766 return; 2767 } 2768 2769 bzero(ks_nm, sizeof (ks_nm)); 2770 (void) sprintf(ks_nm, "stmf_lu_%"PRIxPTR"", (uintptr_t)ilu); 2771 if ((ilu->ilu_kstat_info = kstat_create(STMF_MODULE_NAME, 0, 2772 ks_nm, "misc", KSTAT_TYPE_NAMED, 2773 sizeof (stmf_kstat_lu_info_t) / sizeof (kstat_named_t), 2774 KSTAT_FLAG_VIRTUAL)) == NULL) { 2775 kmem_free(ks_lu, STMF_KSTAT_LU_SZ); 2776 cmn_err(CE_WARN, "STMF: kstat_create lu failed"); 2777 return; 2778 } 2779 2780 ilu->ilu_kstat_info->ks_data_size = STMF_KSTAT_LU_SZ; 2781 ilu->ilu_kstat_info->ks_data = ks_lu; 2782 2783 kstat_named_init(&ks_lu->i_lun_guid, "lun-guid", 2784 KSTAT_DATA_STRING); 2785 kstat_named_init(&ks_lu->i_lun_alias, "lun-alias", 2786 KSTAT_DATA_STRING); 2787 2788 /* convert guid to hex string */ 2789 int i; 2790 uint8_t *p = ilu->ilu_lu->lu_id->ident; 2791 bzero(ilu->ilu_ascii_hex_guid, sizeof (ilu->ilu_ascii_hex_guid)); 2792 for (i = 0; i < STMF_GUID_INPUT / 2; i++) { 2793 (void) sprintf(&ilu->ilu_ascii_hex_guid[i * 2], "%02x", p[i]); 2794 } 2795 kstat_named_setstr(&ks_lu->i_lun_guid, 2796 (const char *)ilu->ilu_ascii_hex_guid); 2797 kstat_named_setstr(&ks_lu->i_lun_alias, 2798 (const char *)ilu->ilu_lu->lu_alias); 2799 kstat_install(ilu->ilu_kstat_info); 2800 2801 /* create kstat lun io */ 2802 bzero(ks_nm, sizeof (ks_nm)); 2803 (void) sprintf(ks_nm, "stmf_lu_io_%"PRIxPTR"", (uintptr_t)ilu); 2804 if ((ilu->ilu_kstat_io = kstat_create(STMF_MODULE_NAME, 0, 2805 ks_nm, "io", KSTAT_TYPE_IO, 1, 0)) == NULL) { 2806 cmn_err(CE_WARN, "STMF: kstat_create lu_io failed"); 2807 return; 2808 } 2809 mutex_init(&ilu->ilu_kstat_lock, NULL, MUTEX_DRIVER, 0); 2810 ilu->ilu_kstat_io->ks_lock = &ilu->ilu_kstat_lock; 2811 kstat_install(ilu->ilu_kstat_io); 2812 } 2813 2814 static void 2815 stmf_create_kstat_lport(stmf_i_local_port_t *ilport) 2816 { 2817 char ks_nm[KSTAT_STRLEN]; 2818 stmf_kstat_tgt_info_t *ks_tgt; 2819 int id, len; 2820 2821 /* create kstat lport info */ 2822 ks_tgt = (stmf_kstat_tgt_info_t *)kmem_zalloc(STMF_KSTAT_TGT_SZ, 2823 KM_NOSLEEP); 2824 if (ks_tgt == NULL) { 2825 cmn_err(CE_WARN, "STMF: kmem_zalloc failed"); 2826 return; 2827 } 2828 2829 bzero(ks_nm, sizeof (ks_nm)); 2830 (void) sprintf(ks_nm, "stmf_tgt_%"PRIxPTR"", (uintptr_t)ilport); 2831 if ((ilport->ilport_kstat_info = kstat_create(STMF_MODULE_NAME, 2832 0, ks_nm, "misc", KSTAT_TYPE_NAMED, 2833 sizeof (stmf_kstat_tgt_info_t) / sizeof (kstat_named_t), 2834 KSTAT_FLAG_VIRTUAL)) == NULL) { 2835 kmem_free(ks_tgt, STMF_KSTAT_TGT_SZ); 2836 cmn_err(CE_WARN, "STMF: kstat_create target failed"); 2837 return; 2838 } 2839 2840 ilport->ilport_kstat_info->ks_data_size = STMF_KSTAT_TGT_SZ; 2841 ilport->ilport_kstat_info->ks_data = ks_tgt; 2842 2843 kstat_named_init(&ks_tgt->i_tgt_name, "target-name", 2844 KSTAT_DATA_STRING); 2845 kstat_named_init(&ks_tgt->i_tgt_alias, "target-alias", 2846 KSTAT_DATA_STRING); 2847 kstat_named_init(&ks_tgt->i_protocol, "protocol", 2848 KSTAT_DATA_STRING); 2849 2850 /* ident might not be null terminated */ 2851 len = ilport->ilport_lport->lport_id->ident_length; 2852 bcopy(ilport->ilport_lport->lport_id->ident, 2853 ilport->ilport_kstat_tgt_name, len); 2854 ilport->ilport_kstat_tgt_name[len + 1] = NULL; 2855 kstat_named_setstr(&ks_tgt->i_tgt_name, 2856 (const char *)ilport->ilport_kstat_tgt_name); 2857 kstat_named_setstr(&ks_tgt->i_tgt_alias, 2858 (const char *)ilport->ilport_lport->lport_alias); 2859 /* protocol */ 2860 if ((id = ilport->ilport_lport->lport_id->protocol_id) > PROTOCOL_ANY) { 2861 cmn_err(CE_WARN, "STMF: protocol_id out of bound"); 2862 id = PROTOCOL_ANY; 2863 } 2864 kstat_named_setstr(&ks_tgt->i_protocol, protocol_ident[id]); 2865 kstat_install(ilport->ilport_kstat_info); 2866 2867 /* create kstat lport io */ 2868 bzero(ks_nm, sizeof (ks_nm)); 2869 (void) sprintf(ks_nm, "stmf_tgt_io_%"PRIxPTR"", (uintptr_t)ilport); 2870 if ((ilport->ilport_kstat_io = kstat_create(STMF_MODULE_NAME, 0, 2871 ks_nm, "io", KSTAT_TYPE_IO, 1, 0)) == NULL) { 2872 cmn_err(CE_WARN, "STMF: kstat_create target_io failed"); 2873 return; 2874 } 2875 mutex_init(&ilport->ilport_kstat_lock, NULL, MUTEX_DRIVER, 0); 2876 ilport->ilport_kstat_io->ks_lock = &ilport->ilport_kstat_lock; 2877 kstat_install(ilport->ilport_kstat_io); 2878 } 2879 2880 /* 2881 * set the asymmetric access state for a logical unit 2882 * caller is responsible for establishing SCSI unit attention on 2883 * state change 2884 */ 2885 stmf_status_t 2886 stmf_set_lu_access(stmf_lu_t *lu, uint8_t access_state) 2887 { 2888 stmf_i_lu_t *ilu; 2889 uint8_t *p1, *p2; 2890 2891 if ((access_state != STMF_LU_STANDBY) && 2892 (access_state != STMF_LU_ACTIVE)) { 2893 return (STMF_INVALID_ARG); 2894 } 2895 2896 p1 = &lu->lu_id->ident[0]; 2897 mutex_enter(&stmf_state.stmf_lock); 2898 if (stmf_state.stmf_inventory_locked) { 2899 mutex_exit(&stmf_state.stmf_lock); 2900 return (STMF_BUSY); 2901 } 2902 2903 for (ilu = stmf_state.stmf_ilulist; ilu != NULL; ilu = ilu->ilu_next) { 2904 p2 = &ilu->ilu_lu->lu_id->ident[0]; 2905 if (bcmp(p1, p2, 16) == 0) { 2906 break; 2907 } 2908 } 2909 2910 if (!ilu) { 2911 ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 2912 } else { 2913 /* 2914 * We're changing access state on an existing logical unit 2915 * Send the proxy registration message for this logical unit 2916 * if we're in alua mode. 2917 * If the requested state is STMF_LU_ACTIVE, we want to register 2918 * this logical unit. 2919 * If the requested state is STMF_LU_STANDBY, we're going to 2920 * abort all tasks for this logical unit. 2921 */ 2922 if (stmf_state.stmf_alua_state == 1 && 2923 access_state == STMF_LU_ACTIVE) { 2924 stmf_ic_msg_status_t ic_ret = STMF_IC_MSG_SUCCESS; 2925 stmf_ic_msg_t *ic_reg_lun; 2926 if (lu->lu_lp && lu->lu_lp->lp_lpif_rev == LPIF_REV_2 && 2927 lu->lu_lp->lp_alua_support) { 2928 ilu->ilu_alua = 1; 2929 /* allocate the register message */ 2930 ic_reg_lun = ic_lun_active_msg_alloc(p1, 2931 lu->lu_lp->lp_name, 2932 lu->lu_proxy_reg_arg_len, 2933 (uint8_t *)lu->lu_proxy_reg_arg, 2934 stmf_proxy_msg_id); 2935 /* send the message */ 2936 if (ic_reg_lun) { 2937 ic_ret = ic_tx_msg(ic_reg_lun); 2938 if (ic_ret == STMF_IC_MSG_SUCCESS) { 2939 stmf_proxy_msg_id++; 2940 } 2941 } 2942 } 2943 } else if (stmf_state.stmf_alua_state == 1 && 2944 access_state == STMF_LU_STANDBY) { 2945 /* abort all tasks for this lu */ 2946 stmf_task_lu_killall(lu, NULL, STMF_ABORTED); 2947 } 2948 } 2949 2950 ilu->ilu_access = access_state; 2951 2952 mutex_exit(&stmf_state.stmf_lock); 2953 return (STMF_SUCCESS); 2954 } 2955 2956 2957 stmf_status_t 2958 stmf_register_lu(stmf_lu_t *lu) 2959 { 2960 stmf_i_lu_t *ilu; 2961 uint8_t *p1, *p2; 2962 stmf_state_change_info_t ssci; 2963 stmf_id_data_t *luid; 2964 2965 if ((lu->lu_id->ident_type != ID_TYPE_NAA) || 2966 (lu->lu_id->ident_length != 16) || 2967 ((lu->lu_id->ident[0] & 0xf0) != 0x60)) { 2968 return (STMF_INVALID_ARG); 2969 } 2970 p1 = &lu->lu_id->ident[0]; 2971 mutex_enter(&stmf_state.stmf_lock); 2972 if (stmf_state.stmf_inventory_locked) { 2973 mutex_exit(&stmf_state.stmf_lock); 2974 return (STMF_BUSY); 2975 } 2976 2977 for (ilu = stmf_state.stmf_ilulist; ilu != NULL; ilu = ilu->ilu_next) { 2978 p2 = &ilu->ilu_lu->lu_id->ident[0]; 2979 if (bcmp(p1, p2, 16) == 0) { 2980 mutex_exit(&stmf_state.stmf_lock); 2981 return (STMF_ALREADY); 2982 } 2983 } 2984 2985 ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 2986 luid = stmf_lookup_id(&stmf_state.stmf_luid_list, 2987 lu->lu_id->ident_length, lu->lu_id->ident); 2988 if (luid) { 2989 luid->id_pt_to_object = (void *)ilu; 2990 ilu->ilu_luid = luid; 2991 } 2992 ilu->ilu_alias = NULL; 2993 2994 ilu->ilu_next = stmf_state.stmf_ilulist; 2995 ilu->ilu_prev = NULL; 2996 if (ilu->ilu_next) 2997 ilu->ilu_next->ilu_prev = ilu; 2998 stmf_state.stmf_ilulist = ilu; 2999 stmf_state.stmf_nlus++; 3000 if (lu->lu_lp) { 3001 ((stmf_i_lu_provider_t *) 3002 (lu->lu_lp->lp_stmf_private))->ilp_nlus++; 3003 } 3004 ilu->ilu_cur_task_cntr = &ilu->ilu_task_cntr1; 3005 STMF_EVENT_ALLOC_HANDLE(ilu->ilu_event_hdl); 3006 stmf_create_kstat_lu(ilu); 3007 /* 3008 * register with proxy module if available and logical unit 3009 * is in active state 3010 */ 3011 if (stmf_state.stmf_alua_state == 1 && 3012 ilu->ilu_access == STMF_LU_ACTIVE) { 3013 stmf_ic_msg_status_t ic_ret = STMF_IC_MSG_SUCCESS; 3014 stmf_ic_msg_t *ic_reg_lun; 3015 if (lu->lu_lp && lu->lu_lp->lp_lpif_rev == LPIF_REV_2 && 3016 lu->lu_lp->lp_alua_support) { 3017 ilu->ilu_alua = 1; 3018 /* allocate the register message */ 3019 ic_reg_lun = ic_reg_lun_msg_alloc(p1, 3020 lu->lu_lp->lp_name, lu->lu_proxy_reg_arg_len, 3021 (uint8_t *)lu->lu_proxy_reg_arg, stmf_proxy_msg_id); 3022 /* send the message */ 3023 if (ic_reg_lun) { 3024 ic_ret = ic_tx_msg(ic_reg_lun); 3025 if (ic_ret == STMF_IC_MSG_SUCCESS) { 3026 stmf_proxy_msg_id++; 3027 } 3028 } 3029 } 3030 } 3031 mutex_exit(&stmf_state.stmf_lock); 3032 3033 /* XXX we should probably check if this lu can be brought online */ 3034 ilu->ilu_prev_state = STMF_STATE_ONLINE; 3035 if (stmf_state.stmf_service_running) { 3036 ssci.st_rflags = 0; 3037 ssci.st_additional_info = NULL; 3038 (void) stmf_ctl(STMF_CMD_LU_ONLINE, lu, &ssci); 3039 } 3040 3041 /* XXX: Generate event */ 3042 return (STMF_SUCCESS); 3043 } 3044 3045 stmf_status_t 3046 stmf_deregister_lu(stmf_lu_t *lu) 3047 { 3048 stmf_i_lu_t *ilu; 3049 3050 mutex_enter(&stmf_state.stmf_lock); 3051 if (stmf_state.stmf_inventory_locked) { 3052 mutex_exit(&stmf_state.stmf_lock); 3053 return (STMF_BUSY); 3054 } 3055 ilu = stmf_lookup_lu(lu); 3056 if (ilu == NULL) { 3057 mutex_exit(&stmf_state.stmf_lock); 3058 return (STMF_INVALID_ARG); 3059 } 3060 if (ilu->ilu_state == STMF_STATE_OFFLINE) { 3061 ASSERT(ilu->ilu_ntasks == ilu->ilu_ntasks_free); 3062 while (ilu->ilu_flags & ILU_STALL_DEREGISTER) { 3063 cv_wait(&stmf_state.stmf_cv, &stmf_state.stmf_lock); 3064 } 3065 if (ilu->ilu_ntasks) { 3066 stmf_i_scsi_task_t *itask, *nitask; 3067 3068 nitask = ilu->ilu_tasks; 3069 do { 3070 itask = nitask; 3071 nitask = itask->itask_lu_next; 3072 lu->lu_task_free(itask->itask_task); 3073 stmf_free(itask->itask_task); 3074 } while (nitask != NULL); 3075 3076 ilu->ilu_tasks = ilu->ilu_free_tasks = NULL; 3077 ilu->ilu_ntasks = ilu->ilu_ntasks_free = 0; 3078 } 3079 /* de-register with proxy if available */ 3080 if (ilu->ilu_access == STMF_LU_ACTIVE && 3081 stmf_state.stmf_alua_state == 1) { 3082 /* de-register with proxy module */ 3083 stmf_ic_msg_status_t ic_ret = STMF_IC_MSG_SUCCESS; 3084 stmf_ic_msg_t *ic_dereg_lun; 3085 if (lu->lu_lp && lu->lu_lp->lp_lpif_rev == LPIF_REV_2 && 3086 lu->lu_lp->lp_alua_support) { 3087 ilu->ilu_alua = 1; 3088 /* allocate the de-register message */ 3089 ic_dereg_lun = ic_dereg_lun_msg_alloc( 3090 lu->lu_id->ident, lu->lu_lp->lp_name, 0, 3091 NULL, stmf_proxy_msg_id); 3092 /* send the message */ 3093 if (ic_dereg_lun) { 3094 ic_ret = ic_tx_msg(ic_dereg_lun); 3095 if (ic_ret == STMF_IC_MSG_SUCCESS) { 3096 stmf_proxy_msg_id++; 3097 } 3098 } 3099 } 3100 } 3101 3102 if (ilu->ilu_next) 3103 ilu->ilu_next->ilu_prev = ilu->ilu_prev; 3104 if (ilu->ilu_prev) 3105 ilu->ilu_prev->ilu_next = ilu->ilu_next; 3106 else 3107 stmf_state.stmf_ilulist = ilu->ilu_next; 3108 stmf_state.stmf_nlus--; 3109 3110 if (ilu == stmf_state.stmf_svc_ilu_draining) { 3111 stmf_state.stmf_svc_ilu_draining = ilu->ilu_next; 3112 } 3113 if (ilu == stmf_state.stmf_svc_ilu_timing) { 3114 stmf_state.stmf_svc_ilu_timing = ilu->ilu_next; 3115 } 3116 if (lu->lu_lp) { 3117 ((stmf_i_lu_provider_t *) 3118 (lu->lu_lp->lp_stmf_private))->ilp_nlus--; 3119 } 3120 if (ilu->ilu_luid) { 3121 ((stmf_id_data_t *)ilu->ilu_luid)->id_pt_to_object = 3122 NULL; 3123 ilu->ilu_luid = NULL; 3124 } 3125 STMF_EVENT_FREE_HANDLE(ilu->ilu_event_hdl); 3126 } else { 3127 mutex_exit(&stmf_state.stmf_lock); 3128 return (STMF_BUSY); 3129 } 3130 if (ilu->ilu_kstat_info) { 3131 kmem_free(ilu->ilu_kstat_info->ks_data, 3132 ilu->ilu_kstat_info->ks_data_size); 3133 kstat_delete(ilu->ilu_kstat_info); 3134 } 3135 if (ilu->ilu_kstat_io) { 3136 kstat_delete(ilu->ilu_kstat_io); 3137 mutex_destroy(&ilu->ilu_kstat_lock); 3138 } 3139 stmf_delete_itl_kstat_by_guid(ilu->ilu_ascii_hex_guid); 3140 mutex_exit(&stmf_state.stmf_lock); 3141 return (STMF_SUCCESS); 3142 } 3143 3144 void 3145 stmf_set_port_standby(stmf_local_port_t *lport, uint16_t rtpid) 3146 { 3147 stmf_i_local_port_t *ilport = 3148 (stmf_i_local_port_t *)lport->lport_stmf_private; 3149 ilport->ilport_rtpid = rtpid; 3150 ilport->ilport_standby = 1; 3151 } 3152 3153 void 3154 stmf_set_port_alua(stmf_local_port_t *lport) 3155 { 3156 stmf_i_local_port_t *ilport = 3157 (stmf_i_local_port_t *)lport->lport_stmf_private; 3158 ilport->ilport_alua = 1; 3159 } 3160 3161 stmf_status_t 3162 stmf_register_local_port(stmf_local_port_t *lport) 3163 { 3164 stmf_i_local_port_t *ilport; 3165 stmf_state_change_info_t ssci; 3166 int start_workers = 0; 3167 3168 mutex_enter(&stmf_state.stmf_lock); 3169 if (stmf_state.stmf_inventory_locked) { 3170 mutex_exit(&stmf_state.stmf_lock); 3171 return (STMF_BUSY); 3172 } 3173 ilport = (stmf_i_local_port_t *)lport->lport_stmf_private; 3174 rw_init(&ilport->ilport_lock, NULL, RW_DRIVER, NULL); 3175 3176 ilport->ilport_instance = 3177 id_alloc_nosleep(stmf_state.stmf_ilport_inst_space); 3178 if (ilport->ilport_instance == -1) { 3179 mutex_exit(&stmf_state.stmf_lock); 3180 return (STMF_FAILURE); 3181 } 3182 ilport->ilport_next = stmf_state.stmf_ilportlist; 3183 ilport->ilport_prev = NULL; 3184 if (ilport->ilport_next) 3185 ilport->ilport_next->ilport_prev = ilport; 3186 stmf_state.stmf_ilportlist = ilport; 3187 stmf_state.stmf_nlports++; 3188 if (lport->lport_pp) { 3189 ((stmf_i_port_provider_t *) 3190 (lport->lport_pp->pp_stmf_private))->ipp_npps++; 3191 } 3192 ilport->ilport_tg = 3193 stmf_lookup_group_for_target(lport->lport_id->ident, 3194 lport->lport_id->ident_length); 3195 3196 /* 3197 * rtpid will/must be set if this is a standby port 3198 * only register ports that are not standby (proxy) ports 3199 * and ports that are alua participants (ilport_alua == 1) 3200 */ 3201 if (ilport->ilport_standby == 0) { 3202 ilport->ilport_rtpid = atomic_add_16_nv(&stmf_rtpid_counter, 1); 3203 } 3204 3205 if (stmf_state.stmf_alua_state == 1 && 3206 ilport->ilport_standby == 0 && 3207 ilport->ilport_alua == 1) { 3208 stmf_ic_msg_t *ic_reg_port; 3209 stmf_ic_msg_status_t ic_ret; 3210 stmf_local_port_t *lport; 3211 lport = ilport->ilport_lport; 3212 ic_reg_port = ic_reg_port_msg_alloc( 3213 lport->lport_id, ilport->ilport_rtpid, 3214 0, NULL, stmf_proxy_msg_id); 3215 if (ic_reg_port) { 3216 ic_ret = ic_tx_msg(ic_reg_port); 3217 if (ic_ret == STMF_IC_MSG_SUCCESS) { 3218 ilport->ilport_reg_msgid = stmf_proxy_msg_id++; 3219 } else { 3220 cmn_err(CE_WARN, "error on port registration " 3221 "port - %s", ilport->ilport_kstat_tgt_name); 3222 } 3223 } 3224 } 3225 STMF_EVENT_ALLOC_HANDLE(ilport->ilport_event_hdl); 3226 stmf_create_kstat_lport(ilport); 3227 if (stmf_workers_state == STMF_WORKERS_DISABLED) { 3228 stmf_workers_state = STMF_WORKERS_ENABLING; 3229 start_workers = 1; 3230 } 3231 mutex_exit(&stmf_state.stmf_lock); 3232 3233 if (start_workers) 3234 stmf_worker_init(); 3235 3236 /* XXX we should probably check if this lport can be brought online */ 3237 ilport->ilport_prev_state = STMF_STATE_ONLINE; 3238 if (stmf_state.stmf_service_running) { 3239 ssci.st_rflags = 0; 3240 ssci.st_additional_info = NULL; 3241 (void) stmf_ctl(STMF_CMD_LPORT_ONLINE, lport, &ssci); 3242 } 3243 3244 /* XXX: Generate event */ 3245 return (STMF_SUCCESS); 3246 } 3247 3248 stmf_status_t 3249 stmf_deregister_local_port(stmf_local_port_t *lport) 3250 { 3251 stmf_i_local_port_t *ilport; 3252 3253 mutex_enter(&stmf_state.stmf_lock); 3254 if (stmf_state.stmf_inventory_locked) { 3255 mutex_exit(&stmf_state.stmf_lock); 3256 return (STMF_BUSY); 3257 } 3258 3259 ilport = (stmf_i_local_port_t *)lport->lport_stmf_private; 3260 3261 /* 3262 * deregister ports that are not standby (proxy) 3263 */ 3264 if (stmf_state.stmf_alua_state == 1 && 3265 ilport->ilport_standby == 0 && 3266 ilport->ilport_alua == 1) { 3267 stmf_ic_msg_t *ic_dereg_port; 3268 stmf_ic_msg_status_t ic_ret; 3269 ic_dereg_port = ic_dereg_port_msg_alloc( 3270 lport->lport_id, 0, NULL, stmf_proxy_msg_id); 3271 if (ic_dereg_port) { 3272 ic_ret = ic_tx_msg(ic_dereg_port); 3273 if (ic_ret == STMF_IC_MSG_SUCCESS) { 3274 stmf_proxy_msg_id++; 3275 } 3276 } 3277 } 3278 3279 if (ilport->ilport_nsessions == 0) { 3280 if (ilport->ilport_next) 3281 ilport->ilport_next->ilport_prev = ilport->ilport_prev; 3282 if (ilport->ilport_prev) 3283 ilport->ilport_prev->ilport_next = ilport->ilport_next; 3284 else 3285 stmf_state.stmf_ilportlist = ilport->ilport_next; 3286 id_free(stmf_state.stmf_ilport_inst_space, 3287 ilport->ilport_instance); 3288 rw_destroy(&ilport->ilport_lock); 3289 stmf_state.stmf_nlports--; 3290 if (lport->lport_pp) { 3291 ((stmf_i_port_provider_t *) 3292 (lport->lport_pp->pp_stmf_private))->ipp_npps--; 3293 } 3294 ilport->ilport_tg = NULL; 3295 STMF_EVENT_FREE_HANDLE(ilport->ilport_event_hdl); 3296 } else { 3297 mutex_exit(&stmf_state.stmf_lock); 3298 return (STMF_BUSY); 3299 } 3300 if (ilport->ilport_kstat_info) { 3301 kmem_free(ilport->ilport_kstat_info->ks_data, 3302 ilport->ilport_kstat_info->ks_data_size); 3303 kstat_delete(ilport->ilport_kstat_info); 3304 } 3305 if (ilport->ilport_kstat_io) { 3306 kstat_delete(ilport->ilport_kstat_io); 3307 mutex_destroy(&ilport->ilport_kstat_lock); 3308 } 3309 stmf_delete_itl_kstat_by_lport(ilport->ilport_kstat_tgt_name); 3310 mutex_exit(&stmf_state.stmf_lock); 3311 return (STMF_SUCCESS); 3312 } 3313 3314 /* 3315 * Rport id/instance mappings remain valid until STMF is unloaded 3316 */ 3317 static int 3318 stmf_irport_compare(const void *void_irport1, const void *void_irport2) 3319 { 3320 const stmf_i_remote_port_t *irport1 = void_irport1; 3321 const stmf_i_remote_port_t *irport2 = void_irport2; 3322 int result; 3323 3324 /* Sort by code set then ident */ 3325 if (irport1->irport_id->code_set < 3326 irport2->irport_id->code_set) { 3327 return (-1); 3328 } else if (irport1->irport_id->code_set > 3329 irport2->irport_id->code_set) { 3330 return (1); 3331 } 3332 3333 /* Next by ident length */ 3334 if (irport1->irport_id->ident_length < 3335 irport2->irport_id->ident_length) { 3336 return (-1); 3337 } else if (irport1->irport_id->ident_length > 3338 irport2->irport_id->ident_length) { 3339 return (1); 3340 } 3341 3342 /* Code set and ident length both match, now compare idents */ 3343 result = memcmp(irport1->irport_id->ident, 3344 irport2->irport_id->ident, 3345 irport1->irport_id->ident_length); 3346 3347 if (result < 0) { 3348 return (-1); 3349 } else if (result > 0) { 3350 return (1); 3351 } 3352 3353 return (0); 3354 } 3355 3356 static stmf_i_remote_port_t * 3357 stmf_irport_create(scsi_devid_desc_t *rport_devid) 3358 { 3359 int alloc_len; 3360 stmf_i_remote_port_t *irport; 3361 3362 /* 3363 * Lookup will bump the refcnt if there's an existing rport 3364 * context for this identifier. 3365 */ 3366 ASSERT(mutex_owned(&stmf_state.stmf_lock)); 3367 3368 alloc_len = sizeof (*irport) + sizeof (scsi_devid_desc_t) + 3369 rport_devid->ident_length - 1; 3370 irport = kmem_zalloc(alloc_len, KM_NOSLEEP); 3371 if (irport == NULL) { 3372 return (NULL); 3373 } 3374 3375 irport->irport_instance = 3376 id_alloc_nosleep(stmf_state.stmf_irport_inst_space); 3377 if (irport->irport_instance == -1) { 3378 kmem_free(irport, alloc_len); 3379 return (NULL); 3380 } 3381 3382 irport->irport_id = 3383 (struct scsi_devid_desc *)(irport + 1); /* Ptr. Arith. */ 3384 bcopy(rport_devid, irport->irport_id, 3385 sizeof (scsi_devid_desc_t) + rport_devid->ident_length - 1); 3386 irport->irport_refcnt = 1; 3387 mutex_init(&irport->irport_mutex, NULL, MUTEX_DEFAULT, NULL); 3388 3389 return (irport); 3390 } 3391 3392 static void 3393 stmf_irport_destroy(stmf_i_remote_port_t *irport) 3394 { 3395 id_free(stmf_state.stmf_irport_inst_space, irport->irport_instance); 3396 mutex_destroy(&irport->irport_mutex); 3397 kmem_free(irport, sizeof (*irport) + sizeof (scsi_devid_desc_t) + 3398 irport->irport_id->ident_length - 1); 3399 } 3400 3401 static stmf_i_remote_port_t * 3402 stmf_irport_register(scsi_devid_desc_t *rport_devid) 3403 { 3404 stmf_i_remote_port_t *irport; 3405 3406 mutex_enter(&stmf_state.stmf_lock); 3407 3408 /* 3409 * Lookup will bump the refcnt if there's an existing rport 3410 * context for this identifier. 3411 */ 3412 if ((irport = stmf_irport_lookup_locked(rport_devid)) != NULL) { 3413 mutex_exit(&stmf_state.stmf_lock); 3414 return (irport); 3415 } 3416 3417 irport = stmf_irport_create(rport_devid); 3418 if (irport == NULL) { 3419 mutex_exit(&stmf_state.stmf_lock); 3420 return (NULL); 3421 } 3422 3423 avl_add(&stmf_state.stmf_irportlist, irport); 3424 mutex_exit(&stmf_state.stmf_lock); 3425 3426 return (irport); 3427 } 3428 3429 static stmf_i_remote_port_t * 3430 stmf_irport_lookup_locked(scsi_devid_desc_t *rport_devid) 3431 { 3432 stmf_i_remote_port_t *irport; 3433 stmf_i_remote_port_t tmp_irport; 3434 3435 ASSERT(mutex_owned(&stmf_state.stmf_lock)); 3436 tmp_irport.irport_id = rport_devid; 3437 irport = avl_find(&stmf_state.stmf_irportlist, &tmp_irport, NULL); 3438 if (irport != NULL) { 3439 mutex_enter(&irport->irport_mutex); 3440 irport->irport_refcnt++; 3441 mutex_exit(&irport->irport_mutex); 3442 } 3443 3444 return (irport); 3445 } 3446 3447 static void 3448 stmf_irport_deregister(stmf_i_remote_port_t *irport) 3449 { 3450 /* 3451 * If we were actually going to remove unreferenced remote ports 3452 * we would want to acquire stmf_state.stmf_lock before getting 3453 * the irport mutex. 3454 * 3455 * Instead we're just going to leave it there even if unreferenced. 3456 */ 3457 mutex_enter(&irport->irport_mutex); 3458 irport->irport_refcnt--; 3459 mutex_exit(&irport->irport_mutex); 3460 } 3461 3462 /* 3463 * Port provider has to make sure that register/deregister session and 3464 * port are serialized calls. 3465 */ 3466 stmf_status_t 3467 stmf_register_scsi_session(stmf_local_port_t *lport, stmf_scsi_session_t *ss) 3468 { 3469 stmf_i_scsi_session_t *iss; 3470 stmf_i_local_port_t *ilport = (stmf_i_local_port_t *) 3471 lport->lport_stmf_private; 3472 uint8_t lun[8]; 3473 3474 /* 3475 * Port state has to be online to register a scsi session. It is 3476 * possible that we started an offline operation and a new SCSI 3477 * session started at the same time (in that case also we are going 3478 * to fail the registeration). But any other state is simply 3479 * a bad port provider implementation. 3480 */ 3481 if (ilport->ilport_state != STMF_STATE_ONLINE) { 3482 if (ilport->ilport_state != STMF_STATE_OFFLINING) { 3483 stmf_trace(lport->lport_alias, "Port is trying to " 3484 "register a session while the state is neither " 3485 "online nor offlining"); 3486 } 3487 return (STMF_FAILURE); 3488 } 3489 bzero(lun, 8); 3490 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private; 3491 if ((iss->iss_irport = stmf_irport_register(ss->ss_rport_id)) == NULL) { 3492 stmf_trace(lport->lport_alias, "Could not register " 3493 "remote port during session registration"); 3494 return (STMF_FAILURE); 3495 } 3496 3497 iss->iss_flags |= ISS_BEING_CREATED; 3498 3499 /* sessions use the ilport_lock. No separate lock is required */ 3500 iss->iss_lockp = &ilport->ilport_lock; 3501 3502 if (iss->iss_sm != NULL) 3503 cmn_err(CE_PANIC, "create lun map called with non NULL map"); 3504 iss->iss_sm = (stmf_lun_map_t *)kmem_zalloc(sizeof (stmf_lun_map_t), 3505 KM_SLEEP); 3506 3507 mutex_enter(&stmf_state.stmf_lock); 3508 rw_enter(&ilport->ilport_lock, RW_WRITER); 3509 (void) stmf_session_create_lun_map(ilport, iss); 3510 ilport->ilport_nsessions++; 3511 iss->iss_next = ilport->ilport_ss_list; 3512 ilport->ilport_ss_list = iss; 3513 rw_exit(&ilport->ilport_lock); 3514 mutex_exit(&stmf_state.stmf_lock); 3515 3516 iss->iss_creation_time = ddi_get_time(); 3517 ss->ss_session_id = atomic_add_64_nv(&stmf_session_counter, 1); 3518 iss->iss_flags &= ~ISS_BEING_CREATED; 3519 /* XXX should we remove ISS_LUN_INVENTORY_CHANGED on new session? */ 3520 iss->iss_flags &= ~ISS_LUN_INVENTORY_CHANGED; 3521 DTRACE_PROBE2(session__online, stmf_local_port_t *, lport, 3522 stmf_scsi_session_t *, ss); 3523 return (STMF_SUCCESS); 3524 } 3525 3526 void 3527 stmf_deregister_scsi_session(stmf_local_port_t *lport, stmf_scsi_session_t *ss) 3528 { 3529 stmf_i_local_port_t *ilport = (stmf_i_local_port_t *) 3530 lport->lport_stmf_private; 3531 stmf_i_scsi_session_t *iss, **ppss; 3532 int found = 0; 3533 stmf_ic_msg_t *ic_session_dereg; 3534 stmf_status_t ic_ret = STMF_FAILURE; 3535 3536 DTRACE_PROBE2(session__offline, stmf_local_port_t *, lport, 3537 stmf_scsi_session_t *, ss); 3538 3539 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private; 3540 if (ss->ss_rport_alias) { 3541 ss->ss_rport_alias = NULL; 3542 } 3543 3544 try_dereg_ss_again: 3545 mutex_enter(&stmf_state.stmf_lock); 3546 atomic_and_32(&iss->iss_flags, 3547 ~(ISS_LUN_INVENTORY_CHANGED | ISS_GOT_INITIAL_LUNS)); 3548 if (iss->iss_flags & ISS_EVENT_ACTIVE) { 3549 mutex_exit(&stmf_state.stmf_lock); 3550 delay(1); 3551 goto try_dereg_ss_again; 3552 } 3553 3554 /* dereg proxy session if not standby port */ 3555 if (stmf_state.stmf_alua_state == 1 && 3556 ilport->ilport_standby == 0 && 3557 ilport->ilport_alua == 1) { 3558 ic_session_dereg = ic_session_dereg_msg_alloc( 3559 ss, stmf_proxy_msg_id); 3560 if (ic_session_dereg) { 3561 ic_ret = ic_tx_msg(ic_session_dereg); 3562 if (ic_ret == STMF_IC_MSG_SUCCESS) { 3563 stmf_proxy_msg_id++; 3564 } 3565 } 3566 } 3567 3568 rw_enter(&ilport->ilport_lock, RW_WRITER); 3569 for (ppss = &ilport->ilport_ss_list; *ppss != NULL; 3570 ppss = &((*ppss)->iss_next)) { 3571 if (iss == (*ppss)) { 3572 *ppss = (*ppss)->iss_next; 3573 found = 1; 3574 break; 3575 } 3576 } 3577 if (!found) { 3578 cmn_err(CE_PANIC, "Deregister session called for non existent" 3579 " session"); 3580 } 3581 ilport->ilport_nsessions--; 3582 3583 stmf_irport_deregister(iss->iss_irport); 3584 (void) stmf_session_destroy_lun_map(ilport, iss); 3585 rw_exit(&ilport->ilport_lock); 3586 mutex_exit(&stmf_state.stmf_lock); 3587 } 3588 3589 stmf_i_scsi_session_t * 3590 stmf_session_id_to_issptr(uint64_t session_id, int stay_locked) 3591 { 3592 stmf_i_local_port_t *ilport; 3593 stmf_i_scsi_session_t *iss; 3594 3595 mutex_enter(&stmf_state.stmf_lock); 3596 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL; 3597 ilport = ilport->ilport_next) { 3598 rw_enter(&ilport->ilport_lock, RW_WRITER); 3599 for (iss = ilport->ilport_ss_list; iss != NULL; 3600 iss = iss->iss_next) { 3601 if (iss->iss_ss->ss_session_id == session_id) { 3602 if (!stay_locked) 3603 rw_exit(&ilport->ilport_lock); 3604 mutex_exit(&stmf_state.stmf_lock); 3605 return (iss); 3606 } 3607 } 3608 rw_exit(&ilport->ilport_lock); 3609 } 3610 mutex_exit(&stmf_state.stmf_lock); 3611 return (NULL); 3612 } 3613 3614 #define MAX_ALIAS 128 3615 3616 static int 3617 stmf_itl_kstat_compare(const void *itl_kstat_1, const void *itl_kstat_2) 3618 { 3619 const stmf_i_itl_kstat_t *kstat_nm1 = itl_kstat_1; 3620 const stmf_i_itl_kstat_t *kstat_nm2 = itl_kstat_2; 3621 int ret; 3622 3623 ret = strcmp(kstat_nm1->iitl_kstat_nm, kstat_nm2->iitl_kstat_nm); 3624 if (ret < 0) { 3625 return (-1); 3626 } else if (ret > 0) { 3627 return (1); 3628 } 3629 return (0); 3630 } 3631 3632 static stmf_i_itl_kstat_t * 3633 stmf_itl_kstat_lookup(char *kstat_nm) 3634 { 3635 stmf_i_itl_kstat_t tmp; 3636 stmf_i_itl_kstat_t *itl_kstat; 3637 3638 ASSERT(mutex_owned(&stmf_state.stmf_lock)); 3639 (void) strcpy(tmp.iitl_kstat_nm, kstat_nm); 3640 itl_kstat = avl_find(&stmf_state.stmf_itl_kstat_list, &tmp, NULL); 3641 return (itl_kstat); 3642 } 3643 3644 static void 3645 stmf_delete_itl_kstat_by_lport(char *tgt) 3646 { 3647 stmf_i_itl_kstat_t *ks_itl, *next; 3648 3649 ASSERT(mutex_owned(&stmf_state.stmf_lock)); 3650 ks_itl = avl_first(&stmf_state.stmf_itl_kstat_list); 3651 for (; ks_itl != NULL; ks_itl = next) { 3652 next = AVL_NEXT(&stmf_state.stmf_itl_kstat_list, ks_itl); 3653 if (strcmp(ks_itl->iitl_kstat_lport, tgt) == 0) { 3654 stmf_teardown_itl_kstats(ks_itl); 3655 avl_remove(&stmf_state.stmf_itl_kstat_list, ks_itl); 3656 kmem_free(ks_itl, sizeof (stmf_i_itl_kstat_t)); 3657 } 3658 } 3659 } 3660 3661 static void 3662 stmf_delete_itl_kstat_by_guid(char *guid) 3663 { 3664 stmf_i_itl_kstat_t *ks_itl, *next; 3665 3666 ASSERT(mutex_owned(&stmf_state.stmf_lock)); 3667 ks_itl = avl_first(&stmf_state.stmf_itl_kstat_list); 3668 for (; ks_itl != NULL; ks_itl = next) { 3669 next = AVL_NEXT(&stmf_state.stmf_itl_kstat_list, ks_itl); 3670 if (strcmp(ks_itl->iitl_kstat_guid, guid) == 0) { 3671 stmf_teardown_itl_kstats(ks_itl); 3672 avl_remove(&stmf_state.stmf_itl_kstat_list, ks_itl); 3673 kmem_free(ks_itl, sizeof (stmf_i_itl_kstat_t)); 3674 } 3675 } 3676 } 3677 3678 static stmf_i_itl_kstat_t * 3679 stmf_itl_kstat_create(stmf_itl_data_t *itl, char *nm, 3680 scsi_devid_desc_t *lport, scsi_devid_desc_t *lun) 3681 { 3682 stmf_i_itl_kstat_t *ks_itl; 3683 int i, len; 3684 3685 ASSERT(mutex_owned(&stmf_state.stmf_lock)); 3686 if ((ks_itl = stmf_itl_kstat_lookup(nm)) != NULL) 3687 return (ks_itl); 3688 3689 len = sizeof (stmf_i_itl_kstat_t); 3690 ks_itl = kmem_zalloc(len, KM_NOSLEEP); 3691 if (ks_itl == NULL) 3692 return (NULL); 3693 3694 (void) strcpy(ks_itl->iitl_kstat_nm, nm); 3695 bcopy(lport->ident, ks_itl->iitl_kstat_lport, lport->ident_length); 3696 ks_itl->iitl_kstat_lport[lport->ident_length] = '\0'; 3697 for (i = 0; i < STMF_GUID_INPUT / 2; i++) { 3698 (void) sprintf(&ks_itl->iitl_kstat_guid[i * 2], "%02x", 3699 lun->ident[i]); 3700 } 3701 ks_itl->iitl_kstat_strbuf = itl->itl_kstat_strbuf; 3702 ks_itl->iitl_kstat_strbuflen = itl->itl_kstat_strbuflen; 3703 ks_itl->iitl_kstat_info = itl->itl_kstat_info; 3704 ks_itl->iitl_kstat_taskq = itl->itl_kstat_taskq; 3705 ks_itl->iitl_kstat_lu_xfer = itl->itl_kstat_lu_xfer; 3706 ks_itl->iitl_kstat_lport_xfer = itl->itl_kstat_lport_xfer; 3707 avl_add(&stmf_state.stmf_itl_kstat_list, ks_itl); 3708 3709 return (ks_itl); 3710 } 3711 3712 stmf_status_t 3713 stmf_setup_itl_kstats(stmf_itl_data_t *itl) 3714 { 3715 char ks_itl_id[32]; 3716 char ks_nm[KSTAT_STRLEN]; 3717 char ks_itl_nm[KSTAT_STRLEN]; 3718 stmf_kstat_itl_info_t *ks_itl; 3719 stmf_scsi_session_t *ss; 3720 stmf_i_scsi_session_t *iss; 3721 stmf_i_local_port_t *ilport; 3722 char *strbuf; 3723 int id, len, i; 3724 char *rport_alias; 3725 char *lport_alias; 3726 char *lu_alias; 3727 stmf_i_itl_kstat_t *tmp_kstat; 3728 3729 /* 3730 * Allocate enough memory in the ITL to hold the relevant 3731 * identifiers. 3732 * rport and lport identifiers come from the stmf_scsi_session_t. 3733 * ident might not be null terminated. 3734 */ 3735 ss = itl->itl_session->iss_ss; 3736 iss = ss->ss_stmf_private; 3737 ilport = ss->ss_lport->lport_stmf_private; 3738 (void) snprintf(ks_itl_id, 32, "%d.%d.%d", 3739 iss->iss_irport->irport_instance, ilport->ilport_instance, 3740 itl->itl_lun); 3741 3742 (void) snprintf(ks_itl_nm, KSTAT_STRLEN, "itl_%s", ks_itl_id); 3743 /* 3744 * let's verify this itl_kstat already exist 3745 */ 3746 if ((tmp_kstat = stmf_itl_kstat_lookup(ks_itl_nm)) != NULL) { 3747 itl->itl_kstat_strbuf = tmp_kstat->iitl_kstat_strbuf; 3748 itl->itl_kstat_strbuflen = tmp_kstat->iitl_kstat_strbuflen; 3749 itl->itl_kstat_info = tmp_kstat->iitl_kstat_info; 3750 itl->itl_kstat_taskq = tmp_kstat->iitl_kstat_taskq; 3751 itl->itl_kstat_lu_xfer = tmp_kstat->iitl_kstat_lu_xfer; 3752 itl->itl_kstat_lport_xfer = tmp_kstat->iitl_kstat_lport_xfer; 3753 return (STMF_SUCCESS); 3754 } 3755 3756 /* New itl_kstat */ 3757 rport_alias = (ss->ss_rport_alias == NULL) ? 3758 "" : ss->ss_rport_alias; 3759 lport_alias = (ss->ss_lport->lport_alias == NULL) ? 3760 "" : ss->ss_lport->lport_alias; 3761 lu_alias = (itl->itl_ilu->ilu_lu->lu_alias == NULL) ? 3762 "" : itl->itl_ilu->ilu_lu->lu_alias; 3763 3764 itl->itl_kstat_strbuflen = (ss->ss_rport_id->ident_length + 1) + 3765 (strnlen(rport_alias, MAX_ALIAS) + 1) + 3766 (ss->ss_lport->lport_id->ident_length + 1) + 3767 (strnlen(lport_alias, MAX_ALIAS) + 1) + 3768 (STMF_GUID_INPUT + 1) + 3769 (strnlen(lu_alias, MAX_ALIAS) + 1) + 3770 MAX_PROTO_STR_LEN; 3771 itl->itl_kstat_strbuf = kmem_zalloc(itl->itl_kstat_strbuflen, 3772 KM_NOSLEEP); 3773 if (itl->itl_kstat_strbuf == NULL) { 3774 return (STMF_ALLOC_FAILURE); 3775 } 3776 3777 ks_itl = (stmf_kstat_itl_info_t *)kmem_zalloc(sizeof (*ks_itl), 3778 KM_NOSLEEP); 3779 if (ks_itl == NULL) { 3780 kmem_free(itl->itl_kstat_strbuf, itl->itl_kstat_strbuflen); 3781 return (STMF_ALLOC_FAILURE); 3782 } 3783 3784 if ((itl->itl_kstat_info = kstat_create(STMF_MODULE_NAME, 3785 0, ks_itl_nm, "misc", KSTAT_TYPE_NAMED, 3786 sizeof (stmf_kstat_itl_info_t) / sizeof (kstat_named_t), 3787 KSTAT_FLAG_VIRTUAL)) == NULL) { 3788 goto itl_kstat_cleanup; 3789 } 3790 3791 itl->itl_kstat_info->ks_data_size += itl->itl_kstat_strbuflen; 3792 itl->itl_kstat_info->ks_data = ks_itl; 3793 3794 kstat_named_init(&ks_itl->i_rport_name, "rport-name", 3795 KSTAT_DATA_STRING); 3796 kstat_named_init(&ks_itl->i_rport_alias, "rport-alias", 3797 KSTAT_DATA_STRING); 3798 kstat_named_init(&ks_itl->i_lport_name, "lport-name", 3799 KSTAT_DATA_STRING); 3800 kstat_named_init(&ks_itl->i_lport_alias, "lport-alias", 3801 KSTAT_DATA_STRING); 3802 kstat_named_init(&ks_itl->i_protocol, "protocol", 3803 KSTAT_DATA_STRING); 3804 kstat_named_init(&ks_itl->i_lu_guid, "lu-guid", 3805 KSTAT_DATA_STRING); 3806 kstat_named_init(&ks_itl->i_lu_alias, "lu-alias", 3807 KSTAT_DATA_STRING); 3808 kstat_named_init(&ks_itl->i_lu_number, "lu-number", 3809 KSTAT_DATA_UINT64); 3810 kstat_named_init(&ks_itl->i_task_waitq_elapsed, "task-waitq-elapsed", 3811 KSTAT_DATA_UINT64); 3812 kstat_named_init(&ks_itl->i_task_read_elapsed, "task-read-elapsed", 3813 KSTAT_DATA_UINT64); 3814 kstat_named_init(&ks_itl->i_task_write_elapsed, "task-write-elapsed", 3815 KSTAT_DATA_UINT64); 3816 kstat_named_init(&ks_itl->i_lu_read_elapsed, "lu-read-elapsed", 3817 KSTAT_DATA_UINT64); 3818 kstat_named_init(&ks_itl->i_lu_write_elapsed, "lu-write-elapsed", 3819 KSTAT_DATA_UINT64); 3820 kstat_named_init(&ks_itl->i_lport_read_elapsed, "lport-read-elapsed", 3821 KSTAT_DATA_UINT64); 3822 kstat_named_init(&ks_itl->i_lport_write_elapsed, "lport-write-elapsed", 3823 KSTAT_DATA_UINT64); 3824 3825 strbuf = itl->itl_kstat_strbuf; 3826 3827 /* Rport */ 3828 len = ss->ss_rport_id->ident_length; 3829 bcopy(ss->ss_rport_id->ident, strbuf, len); 3830 strbuf += len; 3831 *strbuf = '\0'; 3832 kstat_named_setstr(&ks_itl->i_rport_name, strbuf - len); 3833 strbuf++; 3834 3835 len = strnlen(rport_alias, MAX_ALIAS); 3836 (void) strncpy(strbuf, rport_alias, len + 1); 3837 kstat_named_setstr(&ks_itl->i_rport_alias, strbuf); 3838 strbuf += len + 1; 3839 3840 /* Lport */ 3841 len = ss->ss_lport->lport_id->ident_length; 3842 bcopy(ss->ss_lport->lport_id->ident, strbuf, len); 3843 strbuf += len; 3844 *strbuf = '\0'; 3845 kstat_named_setstr(&ks_itl->i_lport_name, strbuf - len); 3846 strbuf++; 3847 3848 len = strnlen(lport_alias, MAX_ALIAS); 3849 (void) strncpy(strbuf, lport_alias, len + 1); 3850 kstat_named_setstr(&ks_itl->i_lport_alias, strbuf); 3851 strbuf += len + 1; 3852 3853 id = (ss->ss_lport->lport_id->protocol_id > PROTOCOL_ANY) ? 3854 PROTOCOL_ANY : ss->ss_lport->lport_id->protocol_id; 3855 kstat_named_setstr(&ks_itl->i_protocol, protocol_ident[id]); 3856 3857 /* LU */ 3858 for (i = 0; i < STMF_GUID_INPUT / 2; i++) { 3859 (void) sprintf(&strbuf[i * 2], "%02x", 3860 itl->itl_ilu->ilu_lu->lu_id->ident[i]); 3861 } 3862 kstat_named_setstr(&ks_itl->i_lu_guid, strbuf); 3863 strbuf += STMF_GUID_INPUT + 1; 3864 3865 len = strnlen(lu_alias, MAX_ALIAS); 3866 (void) strncpy(strbuf, lu_alias, len + 1); 3867 kstat_named_setstr(&ks_itl->i_lu_alias, strbuf); 3868 strbuf += len + 1; 3869 3870 ks_itl->i_lu_number.value.ui64 = itl->itl_lun; 3871 3872 /* Now create the I/O kstats */ 3873 (void) snprintf(ks_nm, KSTAT_STRLEN, "itl_tasks_%s", ks_itl_id); 3874 if ((itl->itl_kstat_taskq = kstat_create(STMF_MODULE_NAME, 0, 3875 ks_nm, "io", KSTAT_TYPE_IO, 1, 0)) == NULL) { 3876 goto itl_kstat_cleanup; 3877 } 3878 3879 (void) snprintf(ks_nm, KSTAT_STRLEN, "itl_lu_%s", ks_itl_id); 3880 if ((itl->itl_kstat_lu_xfer = kstat_create(STMF_MODULE_NAME, 0, 3881 ks_nm, "io", KSTAT_TYPE_IO, 1, 0)) == NULL) { 3882 goto itl_kstat_cleanup; 3883 } 3884 3885 (void) snprintf(ks_nm, KSTAT_STRLEN, "itl_lport_%s", ks_itl_id); 3886 if ((itl->itl_kstat_lport_xfer = kstat_create(STMF_MODULE_NAME, 0, 3887 ks_nm, "io", KSTAT_TYPE_IO, 1, 0)) == NULL) { 3888 goto itl_kstat_cleanup; 3889 } 3890 3891 /* Install all the kstats */ 3892 kstat_install(itl->itl_kstat_info); 3893 kstat_install(itl->itl_kstat_taskq); 3894 kstat_install(itl->itl_kstat_lu_xfer); 3895 kstat_install(itl->itl_kstat_lport_xfer); 3896 3897 /* Add new itl_kstat to stmf_itl_kstat_list */ 3898 if (stmf_itl_kstat_create(itl, ks_itl_nm, ss->ss_lport->lport_id, 3899 itl->itl_ilu->ilu_lu->lu_id) != NULL) 3900 return (STMF_SUCCESS); 3901 3902 itl_kstat_cleanup: 3903 if (itl->itl_kstat_taskq) 3904 kstat_delete(itl->itl_kstat_taskq); 3905 if (itl->itl_kstat_lu_xfer) 3906 kstat_delete(itl->itl_kstat_lu_xfer); 3907 if (itl->itl_kstat_lport_xfer) 3908 kstat_delete(itl->itl_kstat_lport_xfer); 3909 if (itl->itl_kstat_info) 3910 kstat_delete(itl->itl_kstat_info); 3911 kmem_free(ks_itl, sizeof (*ks_itl)); 3912 kmem_free(itl->itl_kstat_strbuf, itl->itl_kstat_strbuflen); 3913 cmn_err(CE_WARN, "STMF: kstat_create itl failed"); 3914 return (STMF_ALLOC_FAILURE); 3915 } 3916 3917 static void 3918 stmf_teardown_itl_kstats(stmf_i_itl_kstat_t *ks) 3919 { 3920 kstat_delete(ks->iitl_kstat_lport_xfer); 3921 kstat_delete(ks->iitl_kstat_lu_xfer); 3922 kstat_delete(ks->iitl_kstat_taskq); 3923 kmem_free(ks->iitl_kstat_info->ks_data, sizeof (stmf_kstat_itl_info_t)); 3924 kstat_delete(ks->iitl_kstat_info); 3925 kmem_free(ks->iitl_kstat_strbuf, ks->iitl_kstat_strbuflen); 3926 } 3927 3928 void 3929 stmf_release_itl_handle(stmf_lu_t *lu, stmf_itl_data_t *itl) 3930 { 3931 stmf_itl_data_t **itlpp; 3932 stmf_i_lu_t *ilu; 3933 3934 ASSERT(itl->itl_flags & STMF_ITL_BEING_TERMINATED); 3935 3936 ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 3937 mutex_enter(&ilu->ilu_task_lock); 3938 for (itlpp = &ilu->ilu_itl_list; (*itlpp) != NULL; 3939 itlpp = &(*itlpp)->itl_next) { 3940 if ((*itlpp) == itl) 3941 break; 3942 } 3943 ASSERT((*itlpp) != NULL); 3944 *itlpp = itl->itl_next; 3945 mutex_exit(&ilu->ilu_task_lock); 3946 lu->lu_abort(lu, STMF_LU_ITL_HANDLE_REMOVED, itl->itl_handle, 3947 (uint32_t)itl->itl_hdlrm_reason); 3948 3949 kmem_free(itl, sizeof (*itl)); 3950 } 3951 3952 stmf_status_t 3953 stmf_register_itl_handle(stmf_lu_t *lu, uint8_t *lun, 3954 stmf_scsi_session_t *ss, uint64_t session_id, void *itl_handle) 3955 { 3956 stmf_itl_data_t *itl; 3957 stmf_i_scsi_session_t *iss; 3958 stmf_lun_map_ent_t *lun_map_ent; 3959 stmf_i_lu_t *ilu; 3960 uint16_t n; 3961 3962 ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 3963 if (ss == NULL) { 3964 iss = stmf_session_id_to_issptr(session_id, 1); 3965 if (iss == NULL) 3966 return (STMF_NOT_FOUND); 3967 } else { 3968 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private; 3969 } 3970 3971 /* 3972 * Acquire stmf_lock for stmf_itl_kstat_lookup. 3973 */ 3974 mutex_enter(&stmf_state.stmf_lock); 3975 rw_enter(iss->iss_lockp, RW_WRITER); 3976 n = ((uint16_t)lun[1] | (((uint16_t)(lun[0] & 0x3F)) << 8)); 3977 lun_map_ent = (stmf_lun_map_ent_t *) 3978 stmf_get_ent_from_map(iss->iss_sm, n); 3979 if ((lun_map_ent == NULL) || (lun_map_ent->ent_lu != lu)) { 3980 rw_exit(iss->iss_lockp); 3981 mutex_exit(&stmf_state.stmf_lock); 3982 return (STMF_NOT_FOUND); 3983 } 3984 if (lun_map_ent->ent_itl_datap != NULL) { 3985 rw_exit(iss->iss_lockp); 3986 mutex_exit(&stmf_state.stmf_lock); 3987 return (STMF_ALREADY); 3988 } 3989 3990 itl = (stmf_itl_data_t *)kmem_zalloc(sizeof (*itl), KM_NOSLEEP); 3991 if (itl == NULL) { 3992 rw_exit(iss->iss_lockp); 3993 mutex_exit(&stmf_state.stmf_lock); 3994 return (STMF_ALLOC_FAILURE); 3995 } 3996 3997 itl->itl_ilu = ilu; 3998 itl->itl_session = iss; 3999 itl->itl_counter = 1; 4000 itl->itl_lun = n; 4001 itl->itl_handle = itl_handle; 4002 4003 if (stmf_setup_itl_kstats(itl) != STMF_SUCCESS) { 4004 kmem_free(itl, sizeof (*itl)); 4005 rw_exit(iss->iss_lockp); 4006 mutex_exit(&stmf_state.stmf_lock); 4007 return (STMF_ALLOC_FAILURE); 4008 } 4009 4010 mutex_enter(&ilu->ilu_task_lock); 4011 itl->itl_next = ilu->ilu_itl_list; 4012 ilu->ilu_itl_list = itl; 4013 mutex_exit(&ilu->ilu_task_lock); 4014 lun_map_ent->ent_itl_datap = itl; 4015 rw_exit(iss->iss_lockp); 4016 mutex_exit(&stmf_state.stmf_lock); 4017 4018 return (STMF_SUCCESS); 4019 } 4020 4021 void 4022 stmf_do_itl_dereg(stmf_lu_t *lu, stmf_itl_data_t *itl, uint8_t hdlrm_reason) 4023 { 4024 uint8_t old, new; 4025 4026 do { 4027 old = new = itl->itl_flags; 4028 if (old & STMF_ITL_BEING_TERMINATED) 4029 return; 4030 new |= STMF_ITL_BEING_TERMINATED; 4031 } while (atomic_cas_8(&itl->itl_flags, old, new) != old); 4032 itl->itl_hdlrm_reason = hdlrm_reason; 4033 4034 ASSERT(itl->itl_counter); 4035 4036 if (atomic_add_32_nv(&itl->itl_counter, -1)) 4037 return; 4038 4039 drv_usecwait(10); 4040 if (itl->itl_counter) 4041 return; 4042 4043 stmf_release_itl_handle(lu, itl); 4044 } 4045 4046 stmf_status_t 4047 stmf_deregister_all_lu_itl_handles(stmf_lu_t *lu) 4048 { 4049 stmf_i_lu_t *ilu; 4050 stmf_i_local_port_t *ilport; 4051 stmf_i_scsi_session_t *iss; 4052 stmf_lun_map_t *lm; 4053 stmf_lun_map_ent_t *ent; 4054 uint32_t nmaps, nu; 4055 stmf_itl_data_t **itl_list; 4056 int i; 4057 4058 ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 4059 4060 dereg_itl_start:; 4061 nmaps = ilu->ilu_ref_cnt; 4062 if (nmaps == 0) 4063 return (STMF_NOT_FOUND); 4064 itl_list = (stmf_itl_data_t **)kmem_zalloc( 4065 nmaps * sizeof (stmf_itl_data_t *), KM_SLEEP); 4066 mutex_enter(&stmf_state.stmf_lock); 4067 if (nmaps != ilu->ilu_ref_cnt) { 4068 /* Something changed, start all over */ 4069 mutex_exit(&stmf_state.stmf_lock); 4070 kmem_free(itl_list, nmaps * sizeof (stmf_itl_data_t *)); 4071 goto dereg_itl_start; 4072 } 4073 nu = 0; 4074 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL; 4075 ilport = ilport->ilport_next) { 4076 rw_enter(&ilport->ilport_lock, RW_WRITER); 4077 for (iss = ilport->ilport_ss_list; iss != NULL; 4078 iss = iss->iss_next) { 4079 lm = iss->iss_sm; 4080 if (!lm) 4081 continue; 4082 for (i = 0; i < lm->lm_nentries; i++) { 4083 if (lm->lm_plus[i] == NULL) 4084 continue; 4085 ent = (stmf_lun_map_ent_t *)lm->lm_plus[i]; 4086 if ((ent->ent_lu == lu) && 4087 (ent->ent_itl_datap)) { 4088 itl_list[nu++] = ent->ent_itl_datap; 4089 ent->ent_itl_datap = NULL; 4090 if (nu == nmaps) { 4091 rw_exit(&ilport->ilport_lock); 4092 goto dai_scan_done; 4093 } 4094 } 4095 } /* lun table for a session */ 4096 } /* sessions */ 4097 rw_exit(&ilport->ilport_lock); 4098 } /* ports */ 4099 4100 dai_scan_done: 4101 mutex_exit(&stmf_state.stmf_lock); 4102 4103 for (i = 0; i < nu; i++) { 4104 stmf_do_itl_dereg(lu, itl_list[i], 4105 STMF_ITL_REASON_DEREG_REQUEST); 4106 } 4107 kmem_free(itl_list, nmaps * sizeof (stmf_itl_data_t *)); 4108 4109 return (STMF_SUCCESS); 4110 } 4111 4112 stmf_status_t 4113 stmf_deregister_itl_handle(stmf_lu_t *lu, uint8_t *lun, 4114 stmf_scsi_session_t *ss, uint64_t session_id, void *itl_handle) 4115 { 4116 stmf_i_scsi_session_t *iss; 4117 stmf_itl_data_t *itl; 4118 stmf_lun_map_ent_t *ent; 4119 stmf_lun_map_t *lm; 4120 int i; 4121 uint16_t n; 4122 4123 if (ss == NULL) { 4124 if (session_id == STMF_SESSION_ID_NONE) 4125 return (STMF_INVALID_ARG); 4126 iss = stmf_session_id_to_issptr(session_id, 1); 4127 if (iss == NULL) 4128 return (STMF_NOT_FOUND); 4129 } else { 4130 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private; 4131 rw_enter(iss->iss_lockp, RW_WRITER); 4132 } 4133 lm = iss->iss_sm; 4134 if (lm == NULL) { 4135 rw_exit(iss->iss_lockp); 4136 return (STMF_NOT_FOUND); 4137 } 4138 4139 if (lun) { 4140 n = ((uint16_t)lun[1] | (((uint16_t)(lun[0] & 0x3F)) << 8)); 4141 ent = (stmf_lun_map_ent_t *) 4142 stmf_get_ent_from_map(iss->iss_sm, n); 4143 } else { 4144 if (itl_handle == NULL) { 4145 rw_exit(iss->iss_lockp); 4146 return (STMF_INVALID_ARG); 4147 } 4148 ent = NULL; 4149 for (i = 0; i < lm->lm_nentries; i++) { 4150 if (lm->lm_plus[i] == NULL) 4151 continue; 4152 ent = (stmf_lun_map_ent_t *)lm->lm_plus[i]; 4153 if (ent->ent_itl_datap && 4154 (ent->ent_itl_datap->itl_handle == itl_handle)) { 4155 break; 4156 } 4157 } 4158 } 4159 if ((ent == NULL) || (ent->ent_lu != lu) || 4160 (ent->ent_itl_datap == NULL)) { 4161 rw_exit(iss->iss_lockp); 4162 return (STMF_NOT_FOUND); 4163 } 4164 itl = ent->ent_itl_datap; 4165 ent->ent_itl_datap = NULL; 4166 rw_exit(iss->iss_lockp); 4167 stmf_do_itl_dereg(lu, itl, STMF_ITL_REASON_DEREG_REQUEST); 4168 4169 return (STMF_SUCCESS); 4170 } 4171 4172 stmf_status_t 4173 stmf_get_itl_handle(stmf_lu_t *lu, uint8_t *lun, stmf_scsi_session_t *ss, 4174 uint64_t session_id, void **itl_handle_retp) 4175 { 4176 stmf_i_scsi_session_t *iss; 4177 stmf_lun_map_ent_t *ent; 4178 stmf_lun_map_t *lm; 4179 stmf_status_t ret; 4180 int i; 4181 uint16_t n; 4182 4183 if (ss == NULL) { 4184 iss = stmf_session_id_to_issptr(session_id, 1); 4185 if (iss == NULL) 4186 return (STMF_NOT_FOUND); 4187 } else { 4188 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private; 4189 rw_enter(iss->iss_lockp, RW_WRITER); 4190 } 4191 4192 ent = NULL; 4193 if (lun == NULL) { 4194 lm = iss->iss_sm; 4195 for (i = 0; i < lm->lm_nentries; i++) { 4196 if (lm->lm_plus[i] == NULL) 4197 continue; 4198 ent = (stmf_lun_map_ent_t *)lm->lm_plus[i]; 4199 if (ent->ent_lu == lu) 4200 break; 4201 } 4202 } else { 4203 n = ((uint16_t)lun[1] | (((uint16_t)(lun[0] & 0x3F)) << 8)); 4204 ent = (stmf_lun_map_ent_t *) 4205 stmf_get_ent_from_map(iss->iss_sm, n); 4206 if (lu && (ent->ent_lu != lu)) 4207 ent = NULL; 4208 } 4209 if (ent && ent->ent_itl_datap) { 4210 *itl_handle_retp = ent->ent_itl_datap->itl_handle; 4211 ret = STMF_SUCCESS; 4212 } else { 4213 ret = STMF_NOT_FOUND; 4214 } 4215 4216 rw_exit(iss->iss_lockp); 4217 return (ret); 4218 } 4219 4220 stmf_data_buf_t * 4221 stmf_alloc_dbuf(scsi_task_t *task, uint32_t size, uint32_t *pminsize, 4222 uint32_t flags) 4223 { 4224 stmf_i_scsi_task_t *itask = 4225 (stmf_i_scsi_task_t *)task->task_stmf_private; 4226 stmf_local_port_t *lport = task->task_lport; 4227 stmf_data_buf_t *dbuf; 4228 uint8_t ndx; 4229 4230 ndx = stmf_first_zero[itask->itask_allocated_buf_map]; 4231 if (ndx == 0xff) 4232 return (NULL); 4233 dbuf = itask->itask_dbufs[ndx] = lport->lport_ds->ds_alloc_data_buf( 4234 task, size, pminsize, flags); 4235 if (dbuf) { 4236 task->task_cur_nbufs++; 4237 itask->itask_allocated_buf_map |= (1 << ndx); 4238 dbuf->db_handle = ndx; 4239 return (dbuf); 4240 } 4241 4242 return (NULL); 4243 } 4244 4245 void 4246 stmf_free_dbuf(scsi_task_t *task, stmf_data_buf_t *dbuf) 4247 { 4248 stmf_i_scsi_task_t *itask = 4249 (stmf_i_scsi_task_t *)task->task_stmf_private; 4250 stmf_local_port_t *lport = task->task_lport; 4251 4252 itask->itask_allocated_buf_map &= ~(1 << dbuf->db_handle); 4253 task->task_cur_nbufs--; 4254 lport->lport_ds->ds_free_data_buf(lport->lport_ds, dbuf); 4255 } 4256 4257 stmf_data_buf_t * 4258 stmf_handle_to_buf(scsi_task_t *task, uint8_t h) 4259 { 4260 stmf_i_scsi_task_t *itask; 4261 4262 itask = (stmf_i_scsi_task_t *)task->task_stmf_private; 4263 if (h > 3) 4264 return (NULL); 4265 return (itask->itask_dbufs[h]); 4266 } 4267 4268 /* ARGSUSED */ 4269 struct scsi_task * 4270 stmf_task_alloc(struct stmf_local_port *lport, stmf_scsi_session_t *ss, 4271 uint8_t *lun, uint16_t cdb_length_in, uint16_t ext_id) 4272 { 4273 stmf_lu_t *lu; 4274 stmf_i_scsi_session_t *iss; 4275 stmf_i_lu_t *ilu; 4276 stmf_i_scsi_task_t *itask; 4277 stmf_i_scsi_task_t **ppitask; 4278 scsi_task_t *task; 4279 uint64_t *p; 4280 uint8_t *l; 4281 stmf_lun_map_ent_t *lun_map_ent; 4282 uint16_t cdb_length; 4283 uint16_t luNbr; 4284 uint8_t new_task = 0; 4285 4286 /* 4287 * We allocate 7 extra bytes for CDB to provide a cdb pointer which 4288 * is guaranteed to be 8 byte aligned. Some LU providers like OSD 4289 * depend upon this alignment. 4290 */ 4291 if (cdb_length_in >= 16) 4292 cdb_length = cdb_length_in + 7; 4293 else 4294 cdb_length = 16 + 7; 4295 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private; 4296 luNbr = ((uint16_t)lun[1] | (((uint16_t)(lun[0] & 0x3F)) << 8)); 4297 rw_enter(iss->iss_lockp, RW_READER); 4298 lun_map_ent = 4299 (stmf_lun_map_ent_t *)stmf_get_ent_from_map(iss->iss_sm, luNbr); 4300 if (!lun_map_ent) { 4301 lu = dlun0; 4302 } else { 4303 lu = lun_map_ent->ent_lu; 4304 } 4305 ilu = lu->lu_stmf_private; 4306 if (ilu->ilu_flags & ILU_RESET_ACTIVE) { 4307 rw_exit(iss->iss_lockp); 4308 return (NULL); 4309 } 4310 do { 4311 if (ilu->ilu_free_tasks == NULL) { 4312 new_task = 1; 4313 break; 4314 } 4315 mutex_enter(&ilu->ilu_task_lock); 4316 for (ppitask = &ilu->ilu_free_tasks; (*ppitask != NULL) && 4317 ((*ppitask)->itask_cdb_buf_size < cdb_length); 4318 ppitask = &((*ppitask)->itask_lu_free_next)) 4319 ; 4320 if (*ppitask) { 4321 itask = *ppitask; 4322 *ppitask = (*ppitask)->itask_lu_free_next; 4323 ilu->ilu_ntasks_free--; 4324 if (ilu->ilu_ntasks_free < ilu->ilu_ntasks_min_free) 4325 ilu->ilu_ntasks_min_free = ilu->ilu_ntasks_free; 4326 } else { 4327 new_task = 1; 4328 } 4329 mutex_exit(&ilu->ilu_task_lock); 4330 /* CONSTCOND */ 4331 } while (0); 4332 4333 if (!new_task) { 4334 task = itask->itask_task; 4335 task->task_timeout = 0; 4336 p = (uint64_t *)&task->task_flags; 4337 *p++ = 0; *p++ = 0; p++; p++; *p++ = 0; *p++ = 0; *p = 0; 4338 itask->itask_ncmds = 0; 4339 } else { 4340 task = (scsi_task_t *)stmf_alloc(STMF_STRUCT_SCSI_TASK, 4341 cdb_length, AF_FORCE_NOSLEEP); 4342 if (task == NULL) { 4343 rw_exit(iss->iss_lockp); 4344 return (NULL); 4345 } 4346 task->task_lu = lu; 4347 l = task->task_lun_no; 4348 l[0] = lun[0]; 4349 l[1] = lun[1]; 4350 l[2] = lun[2]; 4351 l[3] = lun[3]; 4352 l[4] = lun[4]; 4353 l[5] = lun[5]; 4354 l[6] = lun[6]; 4355 l[7] = lun[7]; 4356 task->task_cdb = (uint8_t *)task->task_port_private; 4357 if ((ulong_t)(task->task_cdb) & 7ul) { 4358 task->task_cdb = (uint8_t *)(((ulong_t) 4359 (task->task_cdb) + 7ul) & ~(7ul)); 4360 } 4361 itask = (stmf_i_scsi_task_t *)task->task_stmf_private; 4362 itask->itask_cdb_buf_size = cdb_length; 4363 } 4364 task->task_session = ss; 4365 task->task_lport = lport; 4366 task->task_cdb_length = cdb_length_in; 4367 itask->itask_flags = ITASK_IN_TRANSITION; 4368 itask->itask_waitq_time = 0; 4369 itask->itask_lu_read_time = itask->itask_lu_write_time = 0; 4370 itask->itask_lport_read_time = itask->itask_lport_write_time = 0; 4371 itask->itask_read_xfer = itask->itask_write_xfer = 0; 4372 4373 if (new_task) { 4374 if (lu->lu_task_alloc(task) != STMF_SUCCESS) { 4375 rw_exit(iss->iss_lockp); 4376 stmf_free(task); 4377 return (NULL); 4378 } 4379 mutex_enter(&ilu->ilu_task_lock); 4380 if (ilu->ilu_flags & ILU_RESET_ACTIVE) { 4381 mutex_exit(&ilu->ilu_task_lock); 4382 rw_exit(iss->iss_lockp); 4383 stmf_free(task); 4384 return (NULL); 4385 } 4386 itask->itask_lu_next = ilu->ilu_tasks; 4387 if (ilu->ilu_tasks) 4388 ilu->ilu_tasks->itask_lu_prev = itask; 4389 ilu->ilu_tasks = itask; 4390 /* kmem_zalloc automatically makes itask->itask_lu_prev NULL */ 4391 ilu->ilu_ntasks++; 4392 mutex_exit(&ilu->ilu_task_lock); 4393 } 4394 4395 itask->itask_ilu_task_cntr = ilu->ilu_cur_task_cntr; 4396 atomic_add_32(itask->itask_ilu_task_cntr, 1); 4397 itask->itask_start_time = ddi_get_lbolt(); 4398 4399 if ((lun_map_ent != NULL) && ((itask->itask_itl_datap = 4400 lun_map_ent->ent_itl_datap) != NULL)) { 4401 atomic_add_32(&itask->itask_itl_datap->itl_counter, 1); 4402 task->task_lu_itl_handle = itask->itask_itl_datap->itl_handle; 4403 } else { 4404 itask->itask_itl_datap = NULL; 4405 task->task_lu_itl_handle = NULL; 4406 } 4407 4408 rw_exit(iss->iss_lockp); 4409 return (task); 4410 } 4411 4412 static void 4413 stmf_task_lu_free(scsi_task_t *task, stmf_i_scsi_session_t *iss) 4414 { 4415 stmf_i_scsi_task_t *itask = 4416 (stmf_i_scsi_task_t *)task->task_stmf_private; 4417 stmf_i_lu_t *ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 4418 4419 ASSERT(rw_lock_held(iss->iss_lockp)); 4420 itask->itask_flags = ITASK_IN_FREE_LIST; 4421 itask->itask_proxy_msg_id = 0; 4422 mutex_enter(&ilu->ilu_task_lock); 4423 itask->itask_lu_free_next = ilu->ilu_free_tasks; 4424 ilu->ilu_free_tasks = itask; 4425 ilu->ilu_ntasks_free++; 4426 mutex_exit(&ilu->ilu_task_lock); 4427 atomic_add_32(itask->itask_ilu_task_cntr, -1); 4428 } 4429 4430 void 4431 stmf_task_lu_check_freelist(stmf_i_lu_t *ilu) 4432 { 4433 uint32_t num_to_release, ndx; 4434 stmf_i_scsi_task_t *itask; 4435 stmf_lu_t *lu = ilu->ilu_lu; 4436 4437 ASSERT(ilu->ilu_ntasks_min_free <= ilu->ilu_ntasks_free); 4438 4439 /* free half of the minimal free of the free tasks */ 4440 num_to_release = (ilu->ilu_ntasks_min_free + 1) / 2; 4441 if (!num_to_release) { 4442 return; 4443 } 4444 for (ndx = 0; ndx < num_to_release; ndx++) { 4445 mutex_enter(&ilu->ilu_task_lock); 4446 itask = ilu->ilu_free_tasks; 4447 if (itask == NULL) { 4448 mutex_exit(&ilu->ilu_task_lock); 4449 break; 4450 } 4451 ilu->ilu_free_tasks = itask->itask_lu_free_next; 4452 ilu->ilu_ntasks_free--; 4453 mutex_exit(&ilu->ilu_task_lock); 4454 4455 lu->lu_task_free(itask->itask_task); 4456 mutex_enter(&ilu->ilu_task_lock); 4457 if (itask->itask_lu_next) 4458 itask->itask_lu_next->itask_lu_prev = 4459 itask->itask_lu_prev; 4460 if (itask->itask_lu_prev) 4461 itask->itask_lu_prev->itask_lu_next = 4462 itask->itask_lu_next; 4463 else 4464 ilu->ilu_tasks = itask->itask_lu_next; 4465 4466 ilu->ilu_ntasks--; 4467 mutex_exit(&ilu->ilu_task_lock); 4468 stmf_free(itask->itask_task); 4469 } 4470 } 4471 4472 /* 4473 * Called with stmf_lock held 4474 */ 4475 void 4476 stmf_check_freetask() 4477 { 4478 stmf_i_lu_t *ilu; 4479 clock_t endtime = ddi_get_lbolt() + drv_usectohz(10000); 4480 4481 /* stmf_svc_ilu_draining may get changed after stmf_lock is released */ 4482 while ((ilu = stmf_state.stmf_svc_ilu_draining) != NULL) { 4483 stmf_state.stmf_svc_ilu_draining = ilu->ilu_next; 4484 if (!ilu->ilu_ntasks_min_free) { 4485 ilu->ilu_ntasks_min_free = ilu->ilu_ntasks_free; 4486 continue; 4487 } 4488 ilu->ilu_flags |= ILU_STALL_DEREGISTER; 4489 mutex_exit(&stmf_state.stmf_lock); 4490 stmf_task_lu_check_freelist(ilu); 4491 /* 4492 * we do not care about the accuracy of 4493 * ilu_ntasks_min_free, so we don't lock here 4494 */ 4495 ilu->ilu_ntasks_min_free = ilu->ilu_ntasks_free; 4496 mutex_enter(&stmf_state.stmf_lock); 4497 ilu->ilu_flags &= ~ILU_STALL_DEREGISTER; 4498 cv_broadcast(&stmf_state.stmf_cv); 4499 if (ddi_get_lbolt() >= endtime) 4500 break; 4501 } 4502 } 4503 4504 void 4505 stmf_do_ilu_timeouts(stmf_i_lu_t *ilu) 4506 { 4507 clock_t l = ddi_get_lbolt(); 4508 clock_t ps = drv_usectohz(1000000); 4509 stmf_i_scsi_task_t *itask; 4510 scsi_task_t *task; 4511 uint32_t to; 4512 4513 mutex_enter(&ilu->ilu_task_lock); 4514 for (itask = ilu->ilu_tasks; itask != NULL; 4515 itask = itask->itask_lu_next) { 4516 if (itask->itask_flags & (ITASK_IN_FREE_LIST | 4517 ITASK_BEING_ABORTED)) { 4518 continue; 4519 } 4520 task = itask->itask_task; 4521 if (task->task_timeout == 0) 4522 to = stmf_default_task_timeout; 4523 else 4524 to = task->task_timeout; 4525 if ((itask->itask_start_time + (to * ps)) > l) 4526 continue; 4527 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 4528 STMF_TIMEOUT, NULL); 4529 } 4530 mutex_exit(&ilu->ilu_task_lock); 4531 } 4532 4533 /* 4534 * Called with stmf_lock held 4535 */ 4536 void 4537 stmf_check_ilu_timing() 4538 { 4539 stmf_i_lu_t *ilu; 4540 clock_t endtime = ddi_get_lbolt() + drv_usectohz(10000); 4541 4542 /* stmf_svc_ilu_timing may get changed after stmf_lock is released */ 4543 while ((ilu = stmf_state.stmf_svc_ilu_timing) != NULL) { 4544 stmf_state.stmf_svc_ilu_timing = ilu->ilu_next; 4545 if (ilu->ilu_cur_task_cntr == (&ilu->ilu_task_cntr1)) { 4546 if (ilu->ilu_task_cntr2 == 0) { 4547 ilu->ilu_cur_task_cntr = &ilu->ilu_task_cntr2; 4548 continue; 4549 } 4550 } else { 4551 if (ilu->ilu_task_cntr1 == 0) { 4552 ilu->ilu_cur_task_cntr = &ilu->ilu_task_cntr1; 4553 continue; 4554 } 4555 } 4556 /* 4557 * If we are here then it means that there is some slowdown 4558 * in tasks on this lu. We need to check. 4559 */ 4560 ilu->ilu_flags |= ILU_STALL_DEREGISTER; 4561 mutex_exit(&stmf_state.stmf_lock); 4562 stmf_do_ilu_timeouts(ilu); 4563 mutex_enter(&stmf_state.stmf_lock); 4564 ilu->ilu_flags &= ~ILU_STALL_DEREGISTER; 4565 cv_broadcast(&stmf_state.stmf_cv); 4566 if (ddi_get_lbolt() >= endtime) 4567 break; 4568 } 4569 } 4570 4571 /* 4572 * Kills all tasks on a lu except tm_task 4573 */ 4574 void 4575 stmf_task_lu_killall(stmf_lu_t *lu, scsi_task_t *tm_task, stmf_status_t s) 4576 { 4577 stmf_i_lu_t *ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 4578 stmf_i_scsi_task_t *itask; 4579 4580 mutex_enter(&ilu->ilu_task_lock); 4581 4582 for (itask = ilu->ilu_tasks; itask != NULL; 4583 itask = itask->itask_lu_next) { 4584 if (itask->itask_flags & ITASK_IN_FREE_LIST) 4585 continue; 4586 if (itask->itask_task == tm_task) 4587 continue; 4588 stmf_abort(STMF_QUEUE_TASK_ABORT, itask->itask_task, s, NULL); 4589 } 4590 mutex_exit(&ilu->ilu_task_lock); 4591 } 4592 4593 void 4594 stmf_free_task_bufs(stmf_i_scsi_task_t *itask, stmf_local_port_t *lport) 4595 { 4596 int i; 4597 uint8_t map; 4598 4599 if ((map = itask->itask_allocated_buf_map) != 0) { 4600 for (i = 0; i < 4; i++) { 4601 if (map & 1) { 4602 stmf_data_buf_t *dbuf; 4603 4604 dbuf = itask->itask_dbufs[i]; 4605 if (dbuf->db_lu_private) { 4606 dbuf->db_lu_private = NULL; 4607 } 4608 if (dbuf->db_xfer_start_timestamp != NULL) { 4609 stmf_lport_xfer_done(itask, dbuf); 4610 } 4611 lport->lport_ds->ds_free_data_buf( 4612 lport->lport_ds, dbuf); 4613 } 4614 map >>= 1; 4615 } 4616 itask->itask_allocated_buf_map = 0; 4617 } 4618 } 4619 4620 void 4621 stmf_task_free(scsi_task_t *task) 4622 { 4623 stmf_local_port_t *lport = task->task_lport; 4624 stmf_i_scsi_task_t *itask = (stmf_i_scsi_task_t *) 4625 task->task_stmf_private; 4626 stmf_i_scsi_session_t *iss = (stmf_i_scsi_session_t *) 4627 task->task_session->ss_stmf_private; 4628 4629 stmf_free_task_bufs(itask, lport); 4630 stmf_itl_task_done(itask); 4631 DTRACE_PROBE2(stmf__task__end, scsi_task_t *, task, 4632 hrtime_t, 4633 itask->itask_done_timestamp - itask->itask_start_timestamp); 4634 if (itask->itask_itl_datap) { 4635 if (atomic_add_32_nv(&itask->itask_itl_datap->itl_counter, 4636 -1) == 0) { 4637 stmf_release_itl_handle(task->task_lu, 4638 itask->itask_itl_datap); 4639 } 4640 } 4641 4642 rw_enter(iss->iss_lockp, RW_READER); 4643 lport->lport_task_free(task); 4644 if (itask->itask_worker) { 4645 atomic_add_32(&stmf_cur_ntasks, -1); 4646 atomic_add_32(&itask->itask_worker->worker_ref_count, -1); 4647 } 4648 /* 4649 * After calling stmf_task_lu_free, the task pointer can no longer 4650 * be trusted. 4651 */ 4652 stmf_task_lu_free(task, iss); 4653 rw_exit(iss->iss_lockp); 4654 } 4655 4656 void 4657 stmf_post_task(scsi_task_t *task, stmf_data_buf_t *dbuf) 4658 { 4659 stmf_i_scsi_task_t *itask = (stmf_i_scsi_task_t *) 4660 task->task_stmf_private; 4661 stmf_i_lu_t *ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 4662 int nv; 4663 uint32_t old, new; 4664 uint32_t ct; 4665 stmf_worker_t *w, *w1; 4666 uint8_t tm; 4667 4668 if (task->task_max_nbufs > 4) 4669 task->task_max_nbufs = 4; 4670 task->task_cur_nbufs = 0; 4671 /* Latest value of currently running tasks */ 4672 ct = atomic_add_32_nv(&stmf_cur_ntasks, 1); 4673 4674 /* Select the next worker using round robin */ 4675 nv = (int)atomic_add_32_nv((uint32_t *)&stmf_worker_sel_counter, 1); 4676 if (nv >= stmf_nworkers_accepting_cmds) { 4677 int s = nv; 4678 do { 4679 nv -= stmf_nworkers_accepting_cmds; 4680 } while (nv >= stmf_nworkers_accepting_cmds); 4681 if (nv < 0) 4682 nv = 0; 4683 /* Its ok if this cas fails */ 4684 (void) atomic_cas_32((uint32_t *)&stmf_worker_sel_counter, 4685 s, nv); 4686 } 4687 w = &stmf_workers[nv]; 4688 4689 /* 4690 * A worker can be pinned by interrupt. So select the next one 4691 * if it has lower load. 4692 */ 4693 if ((nv + 1) >= stmf_nworkers_accepting_cmds) { 4694 w1 = stmf_workers; 4695 } else { 4696 w1 = &stmf_workers[nv + 1]; 4697 } 4698 if (w1->worker_queue_depth < w->worker_queue_depth) 4699 w = w1; 4700 4701 mutex_enter(&w->worker_lock); 4702 if (((w->worker_flags & STMF_WORKER_STARTED) == 0) || 4703 (w->worker_flags & STMF_WORKER_TERMINATE)) { 4704 /* 4705 * Maybe we are in the middle of a change. Just go to 4706 * the 1st worker. 4707 */ 4708 mutex_exit(&w->worker_lock); 4709 w = stmf_workers; 4710 mutex_enter(&w->worker_lock); 4711 } 4712 itask->itask_worker = w; 4713 /* 4714 * Track max system load inside the worker as we already have the 4715 * worker lock (no point implementing another lock). The service 4716 * thread will do the comparisons and figure out the max overall 4717 * system load. 4718 */ 4719 if (w->worker_max_sys_qdepth_pu < ct) 4720 w->worker_max_sys_qdepth_pu = ct; 4721 4722 do { 4723 old = new = itask->itask_flags; 4724 new |= ITASK_KNOWN_TO_TGT_PORT | ITASK_IN_WORKER_QUEUE; 4725 if (task->task_mgmt_function) { 4726 tm = task->task_mgmt_function; 4727 if ((tm == TM_TARGET_RESET) || 4728 (tm == TM_TARGET_COLD_RESET) || 4729 (tm == TM_TARGET_WARM_RESET)) { 4730 new |= ITASK_DEFAULT_HANDLING; 4731 } 4732 } else if (task->task_cdb[0] == SCMD_REPORT_LUNS) { 4733 new |= ITASK_DEFAULT_HANDLING; 4734 } 4735 new &= ~ITASK_IN_TRANSITION; 4736 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 4737 4738 stmf_itl_task_start(itask); 4739 4740 itask->itask_worker_next = NULL; 4741 if (w->worker_task_tail) { 4742 w->worker_task_tail->itask_worker_next = itask; 4743 } else { 4744 w->worker_task_head = itask; 4745 } 4746 w->worker_task_tail = itask; 4747 if (++(w->worker_queue_depth) > w->worker_max_qdepth_pu) { 4748 w->worker_max_qdepth_pu = w->worker_queue_depth; 4749 } 4750 /* Measure task waitq time */ 4751 itask->itask_waitq_enter_timestamp = gethrtime(); 4752 atomic_add_32(&w->worker_ref_count, 1); 4753 itask->itask_cmd_stack[0] = ITASK_CMD_NEW_TASK; 4754 itask->itask_ncmds = 1; 4755 if (dbuf) { 4756 itask->itask_allocated_buf_map = 1; 4757 itask->itask_dbufs[0] = dbuf; 4758 dbuf->db_handle = 0; 4759 } else { 4760 itask->itask_allocated_buf_map = 0; 4761 itask->itask_dbufs[0] = NULL; 4762 } 4763 4764 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0) { 4765 w->worker_signal_timestamp = gethrtime(); 4766 DTRACE_PROBE2(worker__signal, stmf_worker_t *, w, 4767 scsi_task_t *, task); 4768 cv_signal(&w->worker_cv); 4769 } 4770 mutex_exit(&w->worker_lock); 4771 4772 /* 4773 * This can only happen if during stmf_task_alloc(), ILU_RESET_ACTIVE 4774 * was set between checking of ILU_RESET_ACTIVE and clearing of the 4775 * ITASK_IN_FREE_LIST flag. Take care of these "sneaked-in" tasks here. 4776 */ 4777 if (ilu->ilu_flags & ILU_RESET_ACTIVE) { 4778 stmf_abort(STMF_QUEUE_TASK_ABORT, task, STMF_ABORTED, NULL); 4779 } 4780 } 4781 4782 /* 4783 * ++++++++++++++ ABORT LOGIC ++++++++++++++++++++ 4784 * Once ITASK_BEING_ABORTED is set, ITASK_KNOWN_TO_LU can be reset already 4785 * i.e. before ITASK_BEING_ABORTED being set. But if it was not, it cannot 4786 * be reset until the LU explicitly calls stmf_task_lu_aborted(). Of course 4787 * the LU will make this call only if we call the LU's abort entry point. 4788 * we will only call that entry point if ITASK_KNOWN_TO_LU was set. 4789 * 4790 * Same logic applies for the port. 4791 * 4792 * Also ITASK_BEING_ABORTED will not be allowed to set if both KNOWN_TO_LU 4793 * and KNOWN_TO_TGT_PORT are reset. 4794 * 4795 * +++++++++++++++++++++++++++++++++++++++++++++++ 4796 */ 4797 4798 stmf_status_t 4799 stmf_xfer_data(scsi_task_t *task, stmf_data_buf_t *dbuf, uint32_t ioflags) 4800 { 4801 stmf_status_t ret; 4802 4803 stmf_i_scsi_task_t *itask = 4804 (stmf_i_scsi_task_t *)task->task_stmf_private; 4805 4806 if (ioflags & STMF_IOF_LU_DONE) { 4807 uint32_t new, old; 4808 do { 4809 new = old = itask->itask_flags; 4810 if (new & ITASK_BEING_ABORTED) 4811 return (STMF_ABORTED); 4812 new &= ~ITASK_KNOWN_TO_LU; 4813 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 4814 } 4815 if (itask->itask_flags & ITASK_BEING_ABORTED) 4816 return (STMF_ABORTED); 4817 #ifdef DEBUG 4818 if (!(ioflags & STMF_IOF_STATS_ONLY) && stmf_drop_buf_counter > 0) { 4819 if (atomic_add_32_nv((uint32_t *)&stmf_drop_buf_counter, -1) == 4820 1) 4821 return (STMF_SUCCESS); 4822 } 4823 #endif 4824 4825 stmf_update_kstat_lu_io(task, dbuf); 4826 stmf_update_kstat_lport_io(task, dbuf); 4827 stmf_lport_xfer_start(itask, dbuf); 4828 if (ioflags & STMF_IOF_STATS_ONLY) { 4829 stmf_lport_xfer_done(itask, dbuf); 4830 return (STMF_SUCCESS); 4831 } 4832 4833 ret = task->task_lport->lport_xfer_data(task, dbuf, ioflags); 4834 4835 /* 4836 * Port provider may have already called the buffer callback in 4837 * which case dbuf->db_xfer_start_timestamp will be 0. 4838 */ 4839 if ((ret != STMF_SUCCESS) && (dbuf->db_xfer_start_timestamp != 0)) { 4840 stmf_lport_xfer_done(itask, dbuf); 4841 } 4842 4843 return (ret); 4844 } 4845 4846 void 4847 stmf_data_xfer_done(scsi_task_t *task, stmf_data_buf_t *dbuf, uint32_t iof) 4848 { 4849 stmf_i_scsi_task_t *itask = 4850 (stmf_i_scsi_task_t *)task->task_stmf_private; 4851 stmf_worker_t *w = itask->itask_worker; 4852 uint32_t new, old; 4853 uint8_t update_queue_flags, free_it, queue_it; 4854 4855 stmf_lport_xfer_done(itask, dbuf); 4856 4857 mutex_enter(&w->worker_lock); 4858 do { 4859 new = old = itask->itask_flags; 4860 if (old & ITASK_BEING_ABORTED) { 4861 mutex_exit(&w->worker_lock); 4862 return; 4863 } 4864 free_it = 0; 4865 if (iof & STMF_IOF_LPORT_DONE) { 4866 new &= ~ITASK_KNOWN_TO_TGT_PORT; 4867 task->task_completion_status = dbuf->db_xfer_status; 4868 free_it = 1; 4869 } 4870 /* 4871 * If the task is known to LU then queue it. But if 4872 * it is already queued (multiple completions) then 4873 * just update the buffer information by grabbing the 4874 * worker lock. If the task is not known to LU, 4875 * completed/aborted, then see if we need to 4876 * free this task. 4877 */ 4878 if (old & ITASK_KNOWN_TO_LU) { 4879 free_it = 0; 4880 update_queue_flags = 1; 4881 if (old & ITASK_IN_WORKER_QUEUE) { 4882 queue_it = 0; 4883 } else { 4884 queue_it = 1; 4885 new |= ITASK_IN_WORKER_QUEUE; 4886 } 4887 } else { 4888 update_queue_flags = 0; 4889 queue_it = 0; 4890 } 4891 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 4892 4893 if (update_queue_flags) { 4894 uint8_t cmd = (dbuf->db_handle << 5) | ITASK_CMD_DATA_XFER_DONE; 4895 4896 ASSERT(itask->itask_ncmds < ITASK_MAX_NCMDS); 4897 itask->itask_cmd_stack[itask->itask_ncmds++] = cmd; 4898 if (queue_it) { 4899 itask->itask_worker_next = NULL; 4900 if (w->worker_task_tail) { 4901 w->worker_task_tail->itask_worker_next = itask; 4902 } else { 4903 w->worker_task_head = itask; 4904 } 4905 w->worker_task_tail = itask; 4906 /* Measure task waitq time */ 4907 itask->itask_waitq_enter_timestamp = gethrtime(); 4908 if (++(w->worker_queue_depth) > 4909 w->worker_max_qdepth_pu) { 4910 w->worker_max_qdepth_pu = w->worker_queue_depth; 4911 } 4912 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0) 4913 cv_signal(&w->worker_cv); 4914 } 4915 } 4916 mutex_exit(&w->worker_lock); 4917 4918 if (free_it) { 4919 if ((itask->itask_flags & (ITASK_KNOWN_TO_LU | 4920 ITASK_KNOWN_TO_TGT_PORT | ITASK_IN_WORKER_QUEUE | 4921 ITASK_BEING_ABORTED)) == 0) { 4922 stmf_task_free(task); 4923 } 4924 } 4925 } 4926 4927 stmf_status_t 4928 stmf_send_scsi_status(scsi_task_t *task, uint32_t ioflags) 4929 { 4930 DTRACE_PROBE1(scsi__send__status, scsi_task_t *, task); 4931 4932 stmf_i_scsi_task_t *itask = 4933 (stmf_i_scsi_task_t *)task->task_stmf_private; 4934 if (ioflags & STMF_IOF_LU_DONE) { 4935 uint32_t new, old; 4936 do { 4937 new = old = itask->itask_flags; 4938 if (new & ITASK_BEING_ABORTED) 4939 return (STMF_ABORTED); 4940 new &= ~ITASK_KNOWN_TO_LU; 4941 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 4942 } 4943 4944 if (!(itask->itask_flags & ITASK_KNOWN_TO_TGT_PORT)) { 4945 return (STMF_SUCCESS); 4946 } 4947 4948 if (itask->itask_flags & ITASK_BEING_ABORTED) 4949 return (STMF_ABORTED); 4950 4951 if (task->task_additional_flags & TASK_AF_NO_EXPECTED_XFER_LENGTH) { 4952 task->task_status_ctrl = 0; 4953 task->task_resid = 0; 4954 } else if (task->task_cmd_xfer_length > 4955 task->task_expected_xfer_length) { 4956 task->task_status_ctrl = TASK_SCTRL_OVER; 4957 task->task_resid = task->task_cmd_xfer_length - 4958 task->task_expected_xfer_length; 4959 } else if (task->task_nbytes_transferred < 4960 task->task_expected_xfer_length) { 4961 task->task_status_ctrl = TASK_SCTRL_UNDER; 4962 task->task_resid = task->task_expected_xfer_length - 4963 task->task_nbytes_transferred; 4964 } else { 4965 task->task_status_ctrl = 0; 4966 task->task_resid = 0; 4967 } 4968 return (task->task_lport->lport_send_status(task, ioflags)); 4969 } 4970 4971 void 4972 stmf_send_status_done(scsi_task_t *task, stmf_status_t s, uint32_t iof) 4973 { 4974 stmf_i_scsi_task_t *itask = 4975 (stmf_i_scsi_task_t *)task->task_stmf_private; 4976 stmf_worker_t *w = itask->itask_worker; 4977 uint32_t new, old; 4978 uint8_t free_it, queue_it; 4979 4980 mutex_enter(&w->worker_lock); 4981 do { 4982 new = old = itask->itask_flags; 4983 if (old & ITASK_BEING_ABORTED) { 4984 mutex_exit(&w->worker_lock); 4985 return; 4986 } 4987 free_it = 0; 4988 if (iof & STMF_IOF_LPORT_DONE) { 4989 new &= ~ITASK_KNOWN_TO_TGT_PORT; 4990 free_it = 1; 4991 } 4992 /* 4993 * If the task is known to LU then queue it. But if 4994 * it is already queued (multiple completions) then 4995 * just update the buffer information by grabbing the 4996 * worker lock. If the task is not known to LU, 4997 * completed/aborted, then see if we need to 4998 * free this task. 4999 */ 5000 if (old & ITASK_KNOWN_TO_LU) { 5001 free_it = 0; 5002 queue_it = 1; 5003 if (old & ITASK_IN_WORKER_QUEUE) { 5004 cmn_err(CE_PANIC, "status completion received" 5005 " when task is already in worker queue " 5006 " task = %p", (void *)task); 5007 } 5008 new |= ITASK_IN_WORKER_QUEUE; 5009 } else { 5010 queue_it = 0; 5011 } 5012 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 5013 task->task_completion_status = s; 5014 5015 5016 if (queue_it) { 5017 ASSERT(itask->itask_ncmds < ITASK_MAX_NCMDS); 5018 itask->itask_cmd_stack[itask->itask_ncmds++] = 5019 ITASK_CMD_STATUS_DONE; 5020 itask->itask_worker_next = NULL; 5021 if (w->worker_task_tail) { 5022 w->worker_task_tail->itask_worker_next = itask; 5023 } else { 5024 w->worker_task_head = itask; 5025 } 5026 w->worker_task_tail = itask; 5027 /* Measure task waitq time */ 5028 itask->itask_waitq_enter_timestamp = gethrtime(); 5029 if (++(w->worker_queue_depth) > w->worker_max_qdepth_pu) { 5030 w->worker_max_qdepth_pu = w->worker_queue_depth; 5031 } 5032 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0) 5033 cv_signal(&w->worker_cv); 5034 } 5035 mutex_exit(&w->worker_lock); 5036 5037 if (free_it) { 5038 if ((itask->itask_flags & (ITASK_KNOWN_TO_LU | 5039 ITASK_KNOWN_TO_TGT_PORT | ITASK_IN_WORKER_QUEUE | 5040 ITASK_BEING_ABORTED)) == 0) { 5041 stmf_task_free(task); 5042 } else { 5043 cmn_err(CE_PANIC, "LU is done with the task but LPORT " 5044 " is not done, itask %p itask_flags %x", 5045 (void *)itask, itask->itask_flags); 5046 } 5047 } 5048 } 5049 5050 void 5051 stmf_task_lu_done(scsi_task_t *task) 5052 { 5053 stmf_i_scsi_task_t *itask = 5054 (stmf_i_scsi_task_t *)task->task_stmf_private; 5055 stmf_worker_t *w = itask->itask_worker; 5056 uint32_t new, old; 5057 5058 mutex_enter(&w->worker_lock); 5059 do { 5060 new = old = itask->itask_flags; 5061 if (old & ITASK_BEING_ABORTED) { 5062 mutex_exit(&w->worker_lock); 5063 return; 5064 } 5065 if (old & ITASK_IN_WORKER_QUEUE) { 5066 cmn_err(CE_PANIC, "task_lu_done received" 5067 " when task is in worker queue " 5068 " task = %p", (void *)task); 5069 } 5070 new &= ~ITASK_KNOWN_TO_LU; 5071 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 5072 5073 mutex_exit(&w->worker_lock); 5074 5075 if ((itask->itask_flags & (ITASK_KNOWN_TO_LU | 5076 ITASK_KNOWN_TO_TGT_PORT | ITASK_IN_WORKER_QUEUE | 5077 ITASK_BEING_ABORTED)) == 0) { 5078 stmf_task_free(task); 5079 } else { 5080 cmn_err(CE_PANIC, "stmf_lu_done should be the last stage but " 5081 " the task is still not done, task = %p", (void *)task); 5082 } 5083 } 5084 5085 void 5086 stmf_queue_task_for_abort(scsi_task_t *task, stmf_status_t s) 5087 { 5088 stmf_i_scsi_task_t *itask = 5089 (stmf_i_scsi_task_t *)task->task_stmf_private; 5090 stmf_worker_t *w; 5091 uint32_t old, new; 5092 5093 do { 5094 old = new = itask->itask_flags; 5095 if ((old & ITASK_BEING_ABORTED) || 5096 ((old & (ITASK_KNOWN_TO_TGT_PORT | 5097 ITASK_KNOWN_TO_LU)) == 0)) { 5098 return; 5099 } 5100 new |= ITASK_BEING_ABORTED; 5101 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 5102 task->task_completion_status = s; 5103 itask->itask_start_time = ddi_get_lbolt(); 5104 5105 if (((w = itask->itask_worker) == NULL) || 5106 (itask->itask_flags & ITASK_IN_TRANSITION)) { 5107 return; 5108 } 5109 5110 /* Queue it and get out */ 5111 mutex_enter(&w->worker_lock); 5112 if (itask->itask_flags & ITASK_IN_WORKER_QUEUE) { 5113 mutex_exit(&w->worker_lock); 5114 return; 5115 } 5116 atomic_or_32(&itask->itask_flags, ITASK_IN_WORKER_QUEUE); 5117 itask->itask_worker_next = NULL; 5118 if (w->worker_task_tail) { 5119 w->worker_task_tail->itask_worker_next = itask; 5120 } else { 5121 w->worker_task_head = itask; 5122 } 5123 w->worker_task_tail = itask; 5124 if (++(w->worker_queue_depth) > w->worker_max_qdepth_pu) { 5125 w->worker_max_qdepth_pu = w->worker_queue_depth; 5126 } 5127 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0) 5128 cv_signal(&w->worker_cv); 5129 mutex_exit(&w->worker_lock); 5130 } 5131 5132 void 5133 stmf_abort(int abort_cmd, scsi_task_t *task, stmf_status_t s, void *arg) 5134 { 5135 stmf_i_scsi_task_t *itask = NULL; 5136 uint32_t old, new, f, rf; 5137 5138 DTRACE_PROBE2(scsi__task__abort, scsi_task_t *, task, 5139 stmf_status_t, s); 5140 5141 switch (abort_cmd) { 5142 case STMF_QUEUE_ABORT_LU: 5143 stmf_task_lu_killall((stmf_lu_t *)arg, task, s); 5144 return; 5145 case STMF_QUEUE_TASK_ABORT: 5146 stmf_queue_task_for_abort(task, s); 5147 return; 5148 case STMF_REQUEUE_TASK_ABORT_LPORT: 5149 rf = ITASK_TGT_PORT_ABORT_CALLED; 5150 f = ITASK_KNOWN_TO_TGT_PORT; 5151 break; 5152 case STMF_REQUEUE_TASK_ABORT_LU: 5153 rf = ITASK_LU_ABORT_CALLED; 5154 f = ITASK_KNOWN_TO_LU; 5155 break; 5156 default: 5157 return; 5158 } 5159 itask = (stmf_i_scsi_task_t *)task->task_stmf_private; 5160 f |= ITASK_BEING_ABORTED | rf; 5161 do { 5162 old = new = itask->itask_flags; 5163 if ((old & f) != f) { 5164 return; 5165 } 5166 new &= ~rf; 5167 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 5168 } 5169 5170 void 5171 stmf_task_lu_aborted(scsi_task_t *task, stmf_status_t s, uint32_t iof) 5172 { 5173 char info[STMF_CHANGE_INFO_LEN]; 5174 stmf_i_scsi_task_t *itask = TASK_TO_ITASK(task); 5175 unsigned long long st; 5176 5177 st = s; /* gcc fix */ 5178 if ((s != STMF_ABORT_SUCCESS) && (s != STMF_NOT_FOUND)) { 5179 (void) snprintf(info, STMF_CHANGE_INFO_LEN, 5180 "task %p, lu failed to abort ret=%llx", (void *)task, st); 5181 } else if ((iof & STMF_IOF_LU_DONE) == 0) { 5182 (void) snprintf(info, STMF_CHANGE_INFO_LEN, 5183 "Task aborted but LU is not finished, task =" 5184 "%p, s=%llx, iof=%x", (void *)task, st, iof); 5185 } else { 5186 /* 5187 * LU abort successfully 5188 */ 5189 atomic_and_32(&itask->itask_flags, ~ITASK_KNOWN_TO_LU); 5190 return; 5191 } 5192 5193 info[STMF_CHANGE_INFO_LEN - 1] = 0; 5194 stmf_abort_task_offline(task, 1, info); 5195 } 5196 5197 void 5198 stmf_task_lport_aborted(scsi_task_t *task, stmf_status_t s, uint32_t iof) 5199 { 5200 char info[STMF_CHANGE_INFO_LEN]; 5201 stmf_i_scsi_task_t *itask = TASK_TO_ITASK(task); 5202 unsigned long long st; 5203 uint32_t old, new; 5204 5205 st = s; 5206 if ((s != STMF_ABORT_SUCCESS) && (s != STMF_NOT_FOUND)) { 5207 (void) snprintf(info, STMF_CHANGE_INFO_LEN, 5208 "task %p, tgt port failed to abort ret=%llx", (void *)task, 5209 st); 5210 } else if ((iof & STMF_IOF_LPORT_DONE) == 0) { 5211 (void) snprintf(info, STMF_CHANGE_INFO_LEN, 5212 "Task aborted but tgt port is not finished, " 5213 "task=%p, s=%llx, iof=%x", (void *)task, st, iof); 5214 } else { 5215 /* 5216 * LPORT abort successfully 5217 */ 5218 do { 5219 old = new = itask->itask_flags; 5220 if (!(old & ITASK_KNOWN_TO_TGT_PORT)) 5221 return; 5222 new &= ~ITASK_KNOWN_TO_TGT_PORT; 5223 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 5224 return; 5225 } 5226 5227 info[STMF_CHANGE_INFO_LEN - 1] = 0; 5228 stmf_abort_task_offline(task, 0, info); 5229 } 5230 5231 stmf_status_t 5232 stmf_task_poll_lu(scsi_task_t *task, uint32_t timeout) 5233 { 5234 stmf_i_scsi_task_t *itask = (stmf_i_scsi_task_t *) 5235 task->task_stmf_private; 5236 stmf_worker_t *w = itask->itask_worker; 5237 int i; 5238 5239 ASSERT(itask->itask_flags & ITASK_KNOWN_TO_LU); 5240 mutex_enter(&w->worker_lock); 5241 if (itask->itask_ncmds >= ITASK_MAX_NCMDS) { 5242 mutex_exit(&w->worker_lock); 5243 return (STMF_BUSY); 5244 } 5245 for (i = 0; i < itask->itask_ncmds; i++) { 5246 if (itask->itask_cmd_stack[i] == ITASK_CMD_POLL_LU) { 5247 mutex_exit(&w->worker_lock); 5248 return (STMF_SUCCESS); 5249 } 5250 } 5251 itask->itask_cmd_stack[itask->itask_ncmds++] = ITASK_CMD_POLL_LU; 5252 if (timeout == ITASK_DEFAULT_POLL_TIMEOUT) { 5253 itask->itask_poll_timeout = ddi_get_lbolt() + 1; 5254 } else { 5255 clock_t t = drv_usectohz(timeout * 1000); 5256 if (t == 0) 5257 t = 1; 5258 itask->itask_poll_timeout = ddi_get_lbolt() + t; 5259 } 5260 if ((itask->itask_flags & ITASK_IN_WORKER_QUEUE) == 0) { 5261 itask->itask_worker_next = NULL; 5262 if (w->worker_task_tail) { 5263 w->worker_task_tail->itask_worker_next = itask; 5264 } else { 5265 w->worker_task_head = itask; 5266 } 5267 w->worker_task_tail = itask; 5268 if (++(w->worker_queue_depth) > w->worker_max_qdepth_pu) { 5269 w->worker_max_qdepth_pu = w->worker_queue_depth; 5270 } 5271 atomic_or_32(&itask->itask_flags, ITASK_IN_WORKER_QUEUE); 5272 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0) 5273 cv_signal(&w->worker_cv); 5274 } 5275 mutex_exit(&w->worker_lock); 5276 return (STMF_SUCCESS); 5277 } 5278 5279 stmf_status_t 5280 stmf_task_poll_lport(scsi_task_t *task, uint32_t timeout) 5281 { 5282 stmf_i_scsi_task_t *itask = (stmf_i_scsi_task_t *) 5283 task->task_stmf_private; 5284 stmf_worker_t *w = itask->itask_worker; 5285 int i; 5286 5287 ASSERT(itask->itask_flags & ITASK_KNOWN_TO_TGT_PORT); 5288 mutex_enter(&w->worker_lock); 5289 if (itask->itask_ncmds >= ITASK_MAX_NCMDS) { 5290 mutex_exit(&w->worker_lock); 5291 return (STMF_BUSY); 5292 } 5293 for (i = 0; i < itask->itask_ncmds; i++) { 5294 if (itask->itask_cmd_stack[i] == ITASK_CMD_POLL_LPORT) { 5295 mutex_exit(&w->worker_lock); 5296 return (STMF_SUCCESS); 5297 } 5298 } 5299 itask->itask_cmd_stack[itask->itask_ncmds++] = ITASK_CMD_POLL_LPORT; 5300 if (timeout == ITASK_DEFAULT_POLL_TIMEOUT) { 5301 itask->itask_poll_timeout = ddi_get_lbolt() + 1; 5302 } else { 5303 clock_t t = drv_usectohz(timeout * 1000); 5304 if (t == 0) 5305 t = 1; 5306 itask->itask_poll_timeout = ddi_get_lbolt() + t; 5307 } 5308 if ((itask->itask_flags & ITASK_IN_WORKER_QUEUE) == 0) { 5309 itask->itask_worker_next = NULL; 5310 if (w->worker_task_tail) { 5311 w->worker_task_tail->itask_worker_next = itask; 5312 } else { 5313 w->worker_task_head = itask; 5314 } 5315 w->worker_task_tail = itask; 5316 if (++(w->worker_queue_depth) > w->worker_max_qdepth_pu) { 5317 w->worker_max_qdepth_pu = w->worker_queue_depth; 5318 } 5319 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0) 5320 cv_signal(&w->worker_cv); 5321 } 5322 mutex_exit(&w->worker_lock); 5323 return (STMF_SUCCESS); 5324 } 5325 5326 void 5327 stmf_do_task_abort(scsi_task_t *task) 5328 { 5329 stmf_i_scsi_task_t *itask = TASK_TO_ITASK(task); 5330 stmf_lu_t *lu; 5331 stmf_local_port_t *lport; 5332 unsigned long long ret; 5333 uint32_t old, new; 5334 uint8_t call_lu_abort, call_port_abort; 5335 char info[STMF_CHANGE_INFO_LEN]; 5336 5337 lu = task->task_lu; 5338 lport = task->task_lport; 5339 do { 5340 old = new = itask->itask_flags; 5341 if ((old & (ITASK_KNOWN_TO_LU | ITASK_LU_ABORT_CALLED)) == 5342 ITASK_KNOWN_TO_LU) { 5343 new |= ITASK_LU_ABORT_CALLED; 5344 call_lu_abort = 1; 5345 } else { 5346 call_lu_abort = 0; 5347 } 5348 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 5349 5350 if (call_lu_abort) { 5351 if ((itask->itask_flags & ITASK_DEFAULT_HANDLING) == 0) { 5352 ret = lu->lu_abort(lu, STMF_LU_ABORT_TASK, task, 0); 5353 } else { 5354 ret = dlun0->lu_abort(lu, STMF_LU_ABORT_TASK, task, 0); 5355 } 5356 if ((ret == STMF_ABORT_SUCCESS) || (ret == STMF_NOT_FOUND)) { 5357 stmf_task_lu_aborted(task, ret, STMF_IOF_LU_DONE); 5358 } else if (ret == STMF_BUSY) { 5359 atomic_and_32(&itask->itask_flags, 5360 ~ITASK_LU_ABORT_CALLED); 5361 } else if (ret != STMF_SUCCESS) { 5362 (void) snprintf(info, STMF_CHANGE_INFO_LEN, 5363 "Abort failed by LU %p, ret %llx", (void *)lu, ret); 5364 info[STMF_CHANGE_INFO_LEN - 1] = 0; 5365 stmf_abort_task_offline(task, 1, info); 5366 } 5367 } else if (itask->itask_flags & ITASK_KNOWN_TO_LU) { 5368 if (ddi_get_lbolt() > (itask->itask_start_time + 5369 STMF_SEC2TICK(lu->lu_abort_timeout? 5370 lu->lu_abort_timeout : ITASK_DEFAULT_ABORT_TIMEOUT))) { 5371 (void) snprintf(info, STMF_CHANGE_INFO_LEN, 5372 "lu abort timed out"); 5373 info[STMF_CHANGE_INFO_LEN - 1] = 0; 5374 stmf_abort_task_offline(itask->itask_task, 1, info); 5375 } 5376 } 5377 5378 do { 5379 old = new = itask->itask_flags; 5380 if ((old & (ITASK_KNOWN_TO_TGT_PORT | 5381 ITASK_TGT_PORT_ABORT_CALLED)) == ITASK_KNOWN_TO_TGT_PORT) { 5382 new |= ITASK_TGT_PORT_ABORT_CALLED; 5383 call_port_abort = 1; 5384 } else { 5385 call_port_abort = 0; 5386 } 5387 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 5388 if (call_port_abort) { 5389 ret = lport->lport_abort(lport, STMF_LPORT_ABORT_TASK, task, 0); 5390 if ((ret == STMF_ABORT_SUCCESS) || (ret == STMF_NOT_FOUND)) { 5391 stmf_task_lport_aborted(task, ret, STMF_IOF_LPORT_DONE); 5392 } else if (ret == STMF_BUSY) { 5393 atomic_and_32(&itask->itask_flags, 5394 ~ITASK_TGT_PORT_ABORT_CALLED); 5395 } else if (ret != STMF_SUCCESS) { 5396 (void) snprintf(info, STMF_CHANGE_INFO_LEN, 5397 "Abort failed by tgt port %p ret %llx", 5398 (void *)lport, ret); 5399 info[STMF_CHANGE_INFO_LEN - 1] = 0; 5400 stmf_abort_task_offline(task, 0, info); 5401 } 5402 } else if (itask->itask_flags & ITASK_KNOWN_TO_TGT_PORT) { 5403 if (ddi_get_lbolt() > (itask->itask_start_time + 5404 STMF_SEC2TICK(lport->lport_abort_timeout? 5405 lport->lport_abort_timeout : 5406 ITASK_DEFAULT_ABORT_TIMEOUT))) { 5407 (void) snprintf(info, STMF_CHANGE_INFO_LEN, 5408 "lport abort timed out"); 5409 info[STMF_CHANGE_INFO_LEN - 1] = 0; 5410 stmf_abort_task_offline(itask->itask_task, 0, info); 5411 } 5412 } 5413 } 5414 5415 stmf_status_t 5416 stmf_ctl(int cmd, void *obj, void *arg) 5417 { 5418 stmf_status_t ret; 5419 stmf_i_lu_t *ilu; 5420 stmf_i_local_port_t *ilport; 5421 stmf_state_change_info_t *ssci = (stmf_state_change_info_t *)arg; 5422 5423 mutex_enter(&stmf_state.stmf_lock); 5424 ret = STMF_INVALID_ARG; 5425 if (cmd & STMF_CMD_LU_OP) { 5426 ilu = stmf_lookup_lu((stmf_lu_t *)obj); 5427 if (ilu == NULL) { 5428 goto stmf_ctl_lock_exit; 5429 } 5430 DTRACE_PROBE3(lu__state__change, 5431 stmf_lu_t *, ilu->ilu_lu, 5432 int, cmd, stmf_state_change_info_t *, ssci); 5433 } else if (cmd & STMF_CMD_LPORT_OP) { 5434 ilport = stmf_lookup_lport((stmf_local_port_t *)obj); 5435 if (ilport == NULL) { 5436 goto stmf_ctl_lock_exit; 5437 } 5438 DTRACE_PROBE3(lport__state__change, 5439 stmf_local_port_t *, ilport->ilport_lport, 5440 int, cmd, stmf_state_change_info_t *, ssci); 5441 } else { 5442 goto stmf_ctl_lock_exit; 5443 } 5444 5445 switch (cmd) { 5446 case STMF_CMD_LU_ONLINE: 5447 switch (ilu->ilu_state) { 5448 case STMF_STATE_OFFLINE: 5449 ret = STMF_SUCCESS; 5450 break; 5451 case STMF_STATE_ONLINE: 5452 case STMF_STATE_ONLINING: 5453 ret = STMF_ALREADY; 5454 break; 5455 case STMF_STATE_OFFLINING: 5456 ret = STMF_BUSY; 5457 break; 5458 default: 5459 ret = STMF_BADSTATE; 5460 break; 5461 } 5462 if (ret != STMF_SUCCESS) 5463 goto stmf_ctl_lock_exit; 5464 5465 ilu->ilu_state = STMF_STATE_ONLINING; 5466 mutex_exit(&stmf_state.stmf_lock); 5467 stmf_svc_queue(cmd, obj, (stmf_state_change_info_t *)arg); 5468 break; 5469 5470 case STMF_CMD_LU_ONLINE_COMPLETE: 5471 if (ilu->ilu_state != STMF_STATE_ONLINING) { 5472 ret = STMF_BADSTATE; 5473 goto stmf_ctl_lock_exit; 5474 } 5475 if (((stmf_change_status_t *)arg)->st_completion_status == 5476 STMF_SUCCESS) { 5477 ilu->ilu_state = STMF_STATE_ONLINE; 5478 mutex_exit(&stmf_state.stmf_lock); 5479 ((stmf_lu_t *)obj)->lu_ctl((stmf_lu_t *)obj, 5480 STMF_ACK_LU_ONLINE_COMPLETE, arg); 5481 mutex_enter(&stmf_state.stmf_lock); 5482 stmf_add_lu_to_active_sessions((stmf_lu_t *)obj); 5483 } else { 5484 /* XXX: should throw a meesage an record more data */ 5485 ilu->ilu_state = STMF_STATE_OFFLINE; 5486 } 5487 ret = STMF_SUCCESS; 5488 goto stmf_ctl_lock_exit; 5489 5490 case STMF_CMD_LU_OFFLINE: 5491 switch (ilu->ilu_state) { 5492 case STMF_STATE_ONLINE: 5493 ret = STMF_SUCCESS; 5494 break; 5495 case STMF_STATE_OFFLINE: 5496 case STMF_STATE_OFFLINING: 5497 ret = STMF_ALREADY; 5498 break; 5499 case STMF_STATE_ONLINING: 5500 ret = STMF_BUSY; 5501 break; 5502 default: 5503 ret = STMF_BADSTATE; 5504 break; 5505 } 5506 if (ret != STMF_SUCCESS) 5507 goto stmf_ctl_lock_exit; 5508 ilu->ilu_state = STMF_STATE_OFFLINING; 5509 mutex_exit(&stmf_state.stmf_lock); 5510 stmf_svc_queue(cmd, obj, (stmf_state_change_info_t *)arg); 5511 break; 5512 5513 case STMF_CMD_LU_OFFLINE_COMPLETE: 5514 if (ilu->ilu_state != STMF_STATE_OFFLINING) { 5515 ret = STMF_BADSTATE; 5516 goto stmf_ctl_lock_exit; 5517 } 5518 if (((stmf_change_status_t *)arg)->st_completion_status == 5519 STMF_SUCCESS) { 5520 ilu->ilu_state = STMF_STATE_OFFLINE; 5521 mutex_exit(&stmf_state.stmf_lock); 5522 ((stmf_lu_t *)obj)->lu_ctl((stmf_lu_t *)obj, 5523 STMF_ACK_LU_OFFLINE_COMPLETE, arg); 5524 mutex_enter(&stmf_state.stmf_lock); 5525 } else { 5526 ilu->ilu_state = STMF_STATE_ONLINE; 5527 stmf_add_lu_to_active_sessions((stmf_lu_t *)obj); 5528 } 5529 mutex_exit(&stmf_state.stmf_lock); 5530 break; 5531 5532 /* 5533 * LPORT_ONLINE/OFFLINE has nothing to do with link offline/online. 5534 * It's related with hardware disable/enable. 5535 */ 5536 case STMF_CMD_LPORT_ONLINE: 5537 switch (ilport->ilport_state) { 5538 case STMF_STATE_OFFLINE: 5539 ret = STMF_SUCCESS; 5540 break; 5541 case STMF_STATE_ONLINE: 5542 case STMF_STATE_ONLINING: 5543 ret = STMF_ALREADY; 5544 break; 5545 case STMF_STATE_OFFLINING: 5546 ret = STMF_BUSY; 5547 break; 5548 default: 5549 ret = STMF_BADSTATE; 5550 break; 5551 } 5552 if (ret != STMF_SUCCESS) 5553 goto stmf_ctl_lock_exit; 5554 5555 /* 5556 * Only user request can recover the port from the 5557 * FORCED_OFFLINE state 5558 */ 5559 if (ilport->ilport_flags & ILPORT_FORCED_OFFLINE) { 5560 if (!(ssci->st_rflags & STMF_RFLAG_USER_REQUEST)) { 5561 ret = STMF_FAILURE; 5562 goto stmf_ctl_lock_exit; 5563 } 5564 } 5565 5566 /* 5567 * Avoid too frequent request to online 5568 */ 5569 if (ssci->st_rflags & STMF_RFLAG_USER_REQUEST) { 5570 ilport->ilport_online_times = 0; 5571 ilport->ilport_avg_interval = 0; 5572 } 5573 if ((ilport->ilport_avg_interval < STMF_AVG_ONLINE_INTERVAL) && 5574 (ilport->ilport_online_times >= 4)) { 5575 ret = STMF_FAILURE; 5576 ilport->ilport_flags |= ILPORT_FORCED_OFFLINE; 5577 stmf_trace(NULL, "stmf_ctl: too frequent request to " 5578 "online the port"); 5579 cmn_err(CE_WARN, "stmf_ctl: too frequent request to " 5580 "online the port, set FORCED_OFFLINE now"); 5581 goto stmf_ctl_lock_exit; 5582 } 5583 if (ilport->ilport_online_times > 0) { 5584 if (ilport->ilport_online_times == 1) { 5585 ilport->ilport_avg_interval = ddi_get_lbolt() - 5586 ilport->ilport_last_online_clock; 5587 } else { 5588 ilport->ilport_avg_interval = 5589 (ilport->ilport_avg_interval + 5590 ddi_get_lbolt() - 5591 ilport->ilport_last_online_clock) >> 1; 5592 } 5593 } 5594 ilport->ilport_last_online_clock = ddi_get_lbolt(); 5595 ilport->ilport_online_times++; 5596 5597 /* 5598 * Submit online service request 5599 */ 5600 ilport->ilport_flags &= ~ILPORT_FORCED_OFFLINE; 5601 ilport->ilport_state = STMF_STATE_ONLINING; 5602 mutex_exit(&stmf_state.stmf_lock); 5603 stmf_svc_queue(cmd, obj, (stmf_state_change_info_t *)arg); 5604 break; 5605 5606 case STMF_CMD_LPORT_ONLINE_COMPLETE: 5607 if (ilport->ilport_state != STMF_STATE_ONLINING) { 5608 ret = STMF_BADSTATE; 5609 goto stmf_ctl_lock_exit; 5610 } 5611 if (((stmf_change_status_t *)arg)->st_completion_status == 5612 STMF_SUCCESS) { 5613 ilport->ilport_state = STMF_STATE_ONLINE; 5614 mutex_exit(&stmf_state.stmf_lock); 5615 ((stmf_local_port_t *)obj)->lport_ctl( 5616 (stmf_local_port_t *)obj, 5617 STMF_ACK_LPORT_ONLINE_COMPLETE, arg); 5618 mutex_enter(&stmf_state.stmf_lock); 5619 } else { 5620 ilport->ilport_state = STMF_STATE_OFFLINE; 5621 } 5622 ret = STMF_SUCCESS; 5623 goto stmf_ctl_lock_exit; 5624 5625 case STMF_CMD_LPORT_OFFLINE: 5626 switch (ilport->ilport_state) { 5627 case STMF_STATE_ONLINE: 5628 ret = STMF_SUCCESS; 5629 break; 5630 case STMF_STATE_OFFLINE: 5631 case STMF_STATE_OFFLINING: 5632 ret = STMF_ALREADY; 5633 break; 5634 case STMF_STATE_ONLINING: 5635 ret = STMF_BUSY; 5636 break; 5637 default: 5638 ret = STMF_BADSTATE; 5639 break; 5640 } 5641 if (ret != STMF_SUCCESS) 5642 goto stmf_ctl_lock_exit; 5643 5644 ilport->ilport_state = STMF_STATE_OFFLINING; 5645 mutex_exit(&stmf_state.stmf_lock); 5646 stmf_svc_queue(cmd, obj, (stmf_state_change_info_t *)arg); 5647 break; 5648 5649 case STMF_CMD_LPORT_OFFLINE_COMPLETE: 5650 if (ilport->ilport_state != STMF_STATE_OFFLINING) { 5651 ret = STMF_BADSTATE; 5652 goto stmf_ctl_lock_exit; 5653 } 5654 if (((stmf_change_status_t *)arg)->st_completion_status == 5655 STMF_SUCCESS) { 5656 ilport->ilport_state = STMF_STATE_OFFLINE; 5657 mutex_exit(&stmf_state.stmf_lock); 5658 ((stmf_local_port_t *)obj)->lport_ctl( 5659 (stmf_local_port_t *)obj, 5660 STMF_ACK_LPORT_OFFLINE_COMPLETE, arg); 5661 mutex_enter(&stmf_state.stmf_lock); 5662 } else { 5663 ilport->ilport_state = STMF_STATE_ONLINE; 5664 } 5665 mutex_exit(&stmf_state.stmf_lock); 5666 break; 5667 5668 default: 5669 cmn_err(CE_WARN, "Invalid ctl cmd received %x", cmd); 5670 ret = STMF_INVALID_ARG; 5671 goto stmf_ctl_lock_exit; 5672 } 5673 5674 return (STMF_SUCCESS); 5675 5676 stmf_ctl_lock_exit:; 5677 mutex_exit(&stmf_state.stmf_lock); 5678 return (ret); 5679 } 5680 5681 /* ARGSUSED */ 5682 stmf_status_t 5683 stmf_info_impl(uint32_t cmd, void *arg1, void *arg2, uint8_t *buf, 5684 uint32_t *bufsizep) 5685 { 5686 return (STMF_NOT_SUPPORTED); 5687 } 5688 5689 /* ARGSUSED */ 5690 stmf_status_t 5691 stmf_info(uint32_t cmd, void *arg1, void *arg2, uint8_t *buf, 5692 uint32_t *bufsizep) 5693 { 5694 uint32_t cl = SI_GET_CLASS(cmd); 5695 5696 if (cl == SI_STMF) { 5697 return (stmf_info_impl(cmd, arg1, arg2, buf, bufsizep)); 5698 } 5699 if (cl == SI_LPORT) { 5700 return (((stmf_local_port_t *)arg1)->lport_info(cmd, arg1, 5701 arg2, buf, bufsizep)); 5702 } else if (cl == SI_LU) { 5703 return (((stmf_lu_t *)arg1)->lu_info(cmd, arg1, arg2, buf, 5704 bufsizep)); 5705 } 5706 5707 return (STMF_NOT_SUPPORTED); 5708 } 5709 5710 /* 5711 * Used by port providers. pwwn is 8 byte wwn, sdid is the devid used by 5712 * stmf to register local ports. The ident should have 20 bytes in buffer 5713 * space to convert the wwn to "wwn.xxxxxxxxxxxxxxxx" string. 5714 */ 5715 void 5716 stmf_wwn_to_devid_desc(scsi_devid_desc_t *sdid, uint8_t *wwn, 5717 uint8_t protocol_id) 5718 { 5719 char wwn_str[20+1]; 5720 5721 sdid->protocol_id = protocol_id; 5722 sdid->piv = 1; 5723 sdid->code_set = CODE_SET_ASCII; 5724 sdid->association = ID_IS_TARGET_PORT; 5725 sdid->ident_length = 20; 5726 /* Convert wwn value to "wwn.XXXXXXXXXXXXXXXX" format */ 5727 (void) snprintf(wwn_str, sizeof (wwn_str), 5728 "wwn.%02X%02X%02X%02X%02X%02X%02X%02X", 5729 wwn[0], wwn[1], wwn[2], wwn[3], wwn[4], wwn[5], wwn[6], wwn[7]); 5730 bcopy(wwn_str, (char *)sdid->ident, 20); 5731 } 5732 5733 5734 stmf_xfer_data_t * 5735 stmf_prepare_tpgs_data(uint8_t ilu_alua) 5736 { 5737 stmf_xfer_data_t *xd; 5738 stmf_i_local_port_t *ilport; 5739 uint8_t *p; 5740 uint32_t sz, asz, nports = 0, nports_standby = 0; 5741 5742 mutex_enter(&stmf_state.stmf_lock); 5743 /* check if any ports are standby and create second group */ 5744 for (ilport = stmf_state.stmf_ilportlist; ilport; 5745 ilport = ilport->ilport_next) { 5746 if (ilport->ilport_standby == 1) { 5747 nports_standby++; 5748 } else { 5749 nports++; 5750 } 5751 } 5752 5753 /* The spec only allows for 255 ports to be reported per group */ 5754 nports = min(nports, 255); 5755 nports_standby = min(nports_standby, 255); 5756 sz = (nports * 4) + 12; 5757 if (nports_standby && ilu_alua) { 5758 sz += (nports_standby * 4) + 8; 5759 } 5760 asz = sz + sizeof (*xd) - 4; 5761 xd = (stmf_xfer_data_t *)kmem_zalloc(asz, KM_NOSLEEP); 5762 if (xd == NULL) { 5763 mutex_exit(&stmf_state.stmf_lock); 5764 return (NULL); 5765 } 5766 xd->alloc_size = asz; 5767 xd->size_left = sz; 5768 5769 p = xd->buf; 5770 5771 *((uint32_t *)p) = BE_32(sz - 4); 5772 p += 4; 5773 p[0] = 0x80; /* PREF */ 5774 p[1] = 5; /* AO_SUP, S_SUP */ 5775 if (stmf_state.stmf_alua_node == 1) { 5776 p[3] = 1; /* Group 1 */ 5777 } else { 5778 p[3] = 0; /* Group 0 */ 5779 } 5780 p[7] = nports & 0xff; 5781 p += 8; 5782 for (ilport = stmf_state.stmf_ilportlist; ilport; 5783 ilport = ilport->ilport_next) { 5784 if (ilport->ilport_standby == 1) { 5785 continue; 5786 } 5787 ((uint16_t *)p)[1] = BE_16(ilport->ilport_rtpid); 5788 p += 4; 5789 } 5790 if (nports_standby && ilu_alua) { 5791 p[0] = 0x02; /* Non PREF, Standby */ 5792 p[1] = 5; /* AO_SUP, S_SUP */ 5793 if (stmf_state.stmf_alua_node == 1) { 5794 p[3] = 0; /* Group 0 */ 5795 } else { 5796 p[3] = 1; /* Group 1 */ 5797 } 5798 p[7] = nports_standby & 0xff; 5799 p += 8; 5800 for (ilport = stmf_state.stmf_ilportlist; ilport; 5801 ilport = ilport->ilport_next) { 5802 if (ilport->ilport_standby == 0) { 5803 continue; 5804 } 5805 ((uint16_t *)p)[1] = BE_16(ilport->ilport_rtpid); 5806 p += 4; 5807 } 5808 } 5809 5810 mutex_exit(&stmf_state.stmf_lock); 5811 5812 return (xd); 5813 } 5814 5815 struct scsi_devid_desc * 5816 stmf_scsilib_get_devid_desc(uint16_t rtpid) 5817 { 5818 scsi_devid_desc_t *devid = NULL; 5819 stmf_i_local_port_t *ilport; 5820 5821 mutex_enter(&stmf_state.stmf_lock); 5822 5823 for (ilport = stmf_state.stmf_ilportlist; ilport; 5824 ilport = ilport->ilport_next) { 5825 if (ilport->ilport_rtpid == rtpid) { 5826 scsi_devid_desc_t *id = ilport->ilport_lport->lport_id; 5827 uint32_t id_sz = sizeof (scsi_devid_desc_t) - 1 + 5828 id->ident_length; 5829 devid = (scsi_devid_desc_t *)kmem_zalloc(id_sz, 5830 KM_NOSLEEP); 5831 if (devid != NULL) { 5832 bcopy(id, devid, id_sz); 5833 } 5834 break; 5835 } 5836 } 5837 5838 mutex_exit(&stmf_state.stmf_lock); 5839 return (devid); 5840 } 5841 5842 uint16_t 5843 stmf_scsilib_get_lport_rtid(struct scsi_devid_desc *devid) 5844 { 5845 stmf_i_local_port_t *ilport; 5846 scsi_devid_desc_t *id; 5847 uint16_t rtpid = 0; 5848 5849 mutex_enter(&stmf_state.stmf_lock); 5850 for (ilport = stmf_state.stmf_ilportlist; ilport; 5851 ilport = ilport->ilport_next) { 5852 id = ilport->ilport_lport->lport_id; 5853 if ((devid->ident_length == id->ident_length) && 5854 (memcmp(devid->ident, id->ident, id->ident_length) == 0)) { 5855 rtpid = ilport->ilport_rtpid; 5856 break; 5857 } 5858 } 5859 mutex_exit(&stmf_state.stmf_lock); 5860 return (rtpid); 5861 } 5862 5863 static uint16_t stmf_lu_id_gen_number = 0; 5864 5865 stmf_status_t 5866 stmf_scsilib_uniq_lu_id(uint32_t company_id, scsi_devid_desc_t *lu_id) 5867 { 5868 return (stmf_scsilib_uniq_lu_id2(company_id, 0, lu_id)); 5869 } 5870 5871 stmf_status_t 5872 stmf_scsilib_uniq_lu_id2(uint32_t company_id, uint32_t host_id, 5873 scsi_devid_desc_t *lu_id) 5874 { 5875 uint8_t *p; 5876 struct timeval32 timestamp32; 5877 uint32_t *t = (uint32_t *)×tamp32; 5878 struct ether_addr mac; 5879 uint8_t *e = (uint8_t *)&mac; 5880 int hid = (int)host_id; 5881 5882 if (company_id == COMPANY_ID_NONE) 5883 company_id = COMPANY_ID_SUN; 5884 5885 if (lu_id->ident_length != 0x10) 5886 return (STMF_INVALID_ARG); 5887 5888 p = (uint8_t *)lu_id; 5889 5890 atomic_add_16(&stmf_lu_id_gen_number, 1); 5891 5892 p[0] = 0xf1; p[1] = 3; p[2] = 0; p[3] = 0x10; 5893 p[4] = ((company_id >> 20) & 0xf) | 0x60; 5894 p[5] = (company_id >> 12) & 0xff; 5895 p[6] = (company_id >> 4) & 0xff; 5896 p[7] = (company_id << 4) & 0xf0; 5897 if (hid == 0 && !localetheraddr((struct ether_addr *)NULL, &mac)) { 5898 hid = BE_32((int)zone_get_hostid(NULL)); 5899 } 5900 if (hid != 0) { 5901 e[0] = (hid >> 24) & 0xff; 5902 e[1] = (hid >> 16) & 0xff; 5903 e[2] = (hid >> 8) & 0xff; 5904 e[3] = hid & 0xff; 5905 e[4] = e[5] = 0; 5906 } 5907 bcopy(e, p+8, 6); 5908 uniqtime32(×tamp32); 5909 *t = BE_32(*t); 5910 bcopy(t, p+14, 4); 5911 p[18] = (stmf_lu_id_gen_number >> 8) & 0xff; 5912 p[19] = stmf_lu_id_gen_number & 0xff; 5913 5914 return (STMF_SUCCESS); 5915 } 5916 5917 /* 5918 * saa is sense key, ASC, ASCQ 5919 */ 5920 void 5921 stmf_scsilib_send_status(scsi_task_t *task, uint8_t st, uint32_t saa) 5922 { 5923 uint8_t sd[18]; 5924 task->task_scsi_status = st; 5925 if (st == 2) { 5926 bzero(sd, 18); 5927 sd[0] = 0x70; 5928 sd[2] = (saa >> 16) & 0xf; 5929 sd[7] = 10; 5930 sd[12] = (saa >> 8) & 0xff; 5931 sd[13] = saa & 0xff; 5932 task->task_sense_data = sd; 5933 task->task_sense_length = 18; 5934 } else { 5935 task->task_sense_data = NULL; 5936 task->task_sense_length = 0; 5937 } 5938 (void) stmf_send_scsi_status(task, STMF_IOF_LU_DONE); 5939 } 5940 5941 uint32_t 5942 stmf_scsilib_prepare_vpd_page83(scsi_task_t *task, uint8_t *page, 5943 uint32_t page_len, uint8_t byte0, uint32_t vpd_mask) 5944 { 5945 uint8_t *p = NULL; 5946 uint8_t small_buf[32]; 5947 uint32_t sz = 0; 5948 uint32_t n = 4; 5949 uint32_t m = 0; 5950 uint32_t last_bit = 0; 5951 5952 if (page_len < 4) 5953 return (0); 5954 if (page_len > 65535) 5955 page_len = 65535; 5956 5957 page[0] = byte0; 5958 page[1] = 0x83; 5959 5960 /* CONSTCOND */ 5961 while (1) { 5962 m += sz; 5963 if (sz && (page_len > n)) { 5964 uint32_t copysz; 5965 copysz = page_len > (n + sz) ? sz : page_len - n; 5966 bcopy(p, page + n, copysz); 5967 n += copysz; 5968 } 5969 vpd_mask &= ~last_bit; 5970 if (vpd_mask == 0) 5971 break; 5972 5973 if (vpd_mask & STMF_VPD_LU_ID) { 5974 last_bit = STMF_VPD_LU_ID; 5975 sz = task->task_lu->lu_id->ident_length + 4; 5976 p = (uint8_t *)task->task_lu->lu_id; 5977 continue; 5978 } else if (vpd_mask & STMF_VPD_TARGET_ID) { 5979 last_bit = STMF_VPD_TARGET_ID; 5980 sz = task->task_lport->lport_id->ident_length + 4; 5981 p = (uint8_t *)task->task_lport->lport_id; 5982 continue; 5983 } else if (vpd_mask & STMF_VPD_TP_GROUP) { 5984 stmf_i_local_port_t *ilport; 5985 last_bit = STMF_VPD_TP_GROUP; 5986 p = small_buf; 5987 bzero(p, 8); 5988 p[0] = 1; 5989 p[1] = 0x15; 5990 p[3] = 4; 5991 ilport = (stmf_i_local_port_t *) 5992 task->task_lport->lport_stmf_private; 5993 /* 5994 * If we're in alua mode, group 1 contains all alua 5995 * participating ports and all standby ports 5996 * > 255. Otherwise, if we're in alua mode, any local 5997 * ports (non standby/pppt) are also in group 1 if the 5998 * alua node is 1. Otherwise the group is 0. 5999 */ 6000 if ((stmf_state.stmf_alua_state && 6001 (ilport->ilport_alua || ilport->ilport_standby) && 6002 ilport->ilport_rtpid > 255) || 6003 (stmf_state.stmf_alua_node == 1 && 6004 ilport->ilport_standby != 1)) { 6005 p[7] = 1; /* Group 1 */ 6006 } 6007 sz = 8; 6008 continue; 6009 } else if (vpd_mask & STMF_VPD_RELATIVE_TP_ID) { 6010 stmf_i_local_port_t *ilport; 6011 6012 last_bit = STMF_VPD_RELATIVE_TP_ID; 6013 p = small_buf; 6014 bzero(p, 8); 6015 p[0] = 1; 6016 p[1] = 0x14; 6017 p[3] = 4; 6018 ilport = (stmf_i_local_port_t *) 6019 task->task_lport->lport_stmf_private; 6020 p[6] = (ilport->ilport_rtpid >> 8) & 0xff; 6021 p[7] = ilport->ilport_rtpid & 0xff; 6022 sz = 8; 6023 continue; 6024 } else { 6025 cmn_err(CE_WARN, "Invalid vpd_mask"); 6026 break; 6027 } 6028 } 6029 6030 page[2] = (m >> 8) & 0xff; 6031 page[3] = m & 0xff; 6032 6033 return (n); 6034 } 6035 6036 void 6037 stmf_scsilib_handle_report_tpgs(scsi_task_t *task, stmf_data_buf_t *dbuf) 6038 { 6039 stmf_i_scsi_task_t *itask = 6040 (stmf_i_scsi_task_t *)task->task_stmf_private; 6041 stmf_i_lu_t *ilu = 6042 (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 6043 stmf_xfer_data_t *xd; 6044 uint32_t sz, minsz; 6045 6046 itask->itask_flags |= ITASK_DEFAULT_HANDLING; 6047 task->task_cmd_xfer_length = 6048 ((((uint32_t)task->task_cdb[6]) << 24) | 6049 (((uint32_t)task->task_cdb[7]) << 16) | 6050 (((uint32_t)task->task_cdb[8]) << 8) | 6051 ((uint32_t)task->task_cdb[9])); 6052 6053 if (task->task_additional_flags & 6054 TASK_AF_NO_EXPECTED_XFER_LENGTH) { 6055 task->task_expected_xfer_length = 6056 task->task_cmd_xfer_length; 6057 } 6058 6059 if (task->task_cmd_xfer_length == 0) { 6060 stmf_scsilib_send_status(task, STATUS_GOOD, 0); 6061 return; 6062 } 6063 if (task->task_cmd_xfer_length < 4) { 6064 stmf_scsilib_send_status(task, STATUS_CHECK, 6065 STMF_SAA_INVALID_FIELD_IN_CDB); 6066 return; 6067 } 6068 6069 sz = min(task->task_expected_xfer_length, 6070 task->task_cmd_xfer_length); 6071 6072 xd = stmf_prepare_tpgs_data(ilu->ilu_alua); 6073 6074 if (xd == NULL) { 6075 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 6076 STMF_ALLOC_FAILURE, NULL); 6077 return; 6078 } 6079 6080 sz = min(sz, xd->size_left); 6081 xd->size_left = sz; 6082 minsz = min(512, sz); 6083 6084 if (dbuf == NULL) 6085 dbuf = stmf_alloc_dbuf(task, sz, &minsz, 0); 6086 if (dbuf == NULL) { 6087 kmem_free(xd, xd->alloc_size); 6088 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 6089 STMF_ALLOC_FAILURE, NULL); 6090 return; 6091 } 6092 dbuf->db_lu_private = xd; 6093 stmf_xd_to_dbuf(dbuf); 6094 6095 dbuf->db_flags = DB_DIRECTION_TO_RPORT; 6096 (void) stmf_xfer_data(task, dbuf, 0); 6097 6098 } 6099 6100 void 6101 stmf_scsilib_handle_task_mgmt(scsi_task_t *task) 6102 { 6103 6104 switch (task->task_mgmt_function) { 6105 /* 6106 * For now we will abort all I/Os on the LU in case of ABORT_TASK_SET 6107 * and ABORT_TASK. But unlike LUN_RESET we will not reset LU state 6108 * in these cases. This needs to be changed to abort only the required 6109 * set. 6110 */ 6111 case TM_ABORT_TASK: 6112 case TM_ABORT_TASK_SET: 6113 case TM_CLEAR_TASK_SET: 6114 case TM_LUN_RESET: 6115 stmf_handle_lun_reset(task); 6116 /* issue the reset to the proxy node as well */ 6117 if (stmf_state.stmf_alua_state == 1) { 6118 (void) stmf_proxy_scsi_cmd(task, NULL); 6119 } 6120 return; 6121 case TM_TARGET_RESET: 6122 case TM_TARGET_COLD_RESET: 6123 case TM_TARGET_WARM_RESET: 6124 stmf_handle_target_reset(task); 6125 return; 6126 default: 6127 /* We dont support this task mgmt function */ 6128 stmf_scsilib_send_status(task, STATUS_CHECK, 6129 STMF_SAA_INVALID_FIELD_IN_CMD_IU); 6130 return; 6131 } 6132 } 6133 6134 void 6135 stmf_handle_lun_reset(scsi_task_t *task) 6136 { 6137 stmf_i_scsi_task_t *itask; 6138 stmf_i_lu_t *ilu; 6139 6140 itask = (stmf_i_scsi_task_t *)task->task_stmf_private; 6141 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 6142 6143 /* 6144 * To sync with target reset, grab this lock. The LU is not going 6145 * anywhere as there is atleast one task pending (this task). 6146 */ 6147 mutex_enter(&stmf_state.stmf_lock); 6148 6149 if (ilu->ilu_flags & ILU_RESET_ACTIVE) { 6150 mutex_exit(&stmf_state.stmf_lock); 6151 stmf_scsilib_send_status(task, STATUS_CHECK, 6152 STMF_SAA_OPERATION_IN_PROGRESS); 6153 return; 6154 } 6155 atomic_or_32(&ilu->ilu_flags, ILU_RESET_ACTIVE); 6156 mutex_exit(&stmf_state.stmf_lock); 6157 6158 /* 6159 * Mark this task as the one causing LU reset so that we know who 6160 * was responsible for setting the ILU_RESET_ACTIVE. In case this 6161 * task itself gets aborted, we will clear ILU_RESET_ACTIVE. 6162 */ 6163 itask->itask_flags |= ITASK_DEFAULT_HANDLING | ITASK_CAUSING_LU_RESET; 6164 6165 /* Initiatiate abort on all commands on this LU except this one */ 6166 stmf_abort(STMF_QUEUE_ABORT_LU, task, STMF_ABORTED, task->task_lu); 6167 6168 /* Start polling on this task */ 6169 if (stmf_task_poll_lu(task, ITASK_DEFAULT_POLL_TIMEOUT) 6170 != STMF_SUCCESS) { 6171 stmf_abort(STMF_QUEUE_TASK_ABORT, task, STMF_ALLOC_FAILURE, 6172 NULL); 6173 return; 6174 } 6175 } 6176 6177 void 6178 stmf_handle_target_reset(scsi_task_t *task) 6179 { 6180 stmf_i_scsi_task_t *itask; 6181 stmf_i_lu_t *ilu; 6182 stmf_i_scsi_session_t *iss; 6183 stmf_lun_map_t *lm; 6184 stmf_lun_map_ent_t *lm_ent; 6185 int i, lf; 6186 6187 itask = (stmf_i_scsi_task_t *)task->task_stmf_private; 6188 iss = (stmf_i_scsi_session_t *)task->task_session->ss_stmf_private; 6189 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 6190 6191 /* 6192 * To sync with LUN reset, grab this lock. The session is not going 6193 * anywhere as there is atleast one task pending (this task). 6194 */ 6195 mutex_enter(&stmf_state.stmf_lock); 6196 6197 /* Grab the session lock as a writer to prevent any changes in it */ 6198 rw_enter(iss->iss_lockp, RW_WRITER); 6199 6200 if (iss->iss_flags & ISS_RESET_ACTIVE) { 6201 rw_exit(iss->iss_lockp); 6202 mutex_exit(&stmf_state.stmf_lock); 6203 stmf_scsilib_send_status(task, STATUS_CHECK, 6204 STMF_SAA_OPERATION_IN_PROGRESS); 6205 return; 6206 } 6207 atomic_or_32(&iss->iss_flags, ISS_RESET_ACTIVE); 6208 6209 /* 6210 * Now go through each LUN in this session and make sure all of them 6211 * can be reset. 6212 */ 6213 lm = iss->iss_sm; 6214 for (i = 0, lf = 0; i < lm->lm_nentries; i++) { 6215 if (lm->lm_plus[i] == NULL) 6216 continue; 6217 lf++; 6218 lm_ent = (stmf_lun_map_ent_t *)lm->lm_plus[i]; 6219 ilu = (stmf_i_lu_t *)(lm_ent->ent_lu->lu_stmf_private); 6220 if (ilu->ilu_flags & ILU_RESET_ACTIVE) { 6221 atomic_and_32(&iss->iss_flags, ~ISS_RESET_ACTIVE); 6222 rw_exit(iss->iss_lockp); 6223 mutex_exit(&stmf_state.stmf_lock); 6224 stmf_scsilib_send_status(task, STATUS_CHECK, 6225 STMF_SAA_OPERATION_IN_PROGRESS); 6226 return; 6227 } 6228 } 6229 if (lf == 0) { 6230 /* No luns in this session */ 6231 atomic_and_32(&iss->iss_flags, ~ISS_RESET_ACTIVE); 6232 rw_exit(iss->iss_lockp); 6233 mutex_exit(&stmf_state.stmf_lock); 6234 stmf_scsilib_send_status(task, STATUS_GOOD, 0); 6235 return; 6236 } 6237 6238 /* ok, start the damage */ 6239 itask->itask_flags |= ITASK_DEFAULT_HANDLING | 6240 ITASK_CAUSING_TARGET_RESET; 6241 for (i = 0; i < lm->lm_nentries; i++) { 6242 if (lm->lm_plus[i] == NULL) 6243 continue; 6244 lm_ent = (stmf_lun_map_ent_t *)lm->lm_plus[i]; 6245 ilu = (stmf_i_lu_t *)(lm_ent->ent_lu->lu_stmf_private); 6246 atomic_or_32(&ilu->ilu_flags, ILU_RESET_ACTIVE); 6247 } 6248 6249 for (i = 0; i < lm->lm_nentries; i++) { 6250 if (lm->lm_plus[i] == NULL) 6251 continue; 6252 lm_ent = (stmf_lun_map_ent_t *)lm->lm_plus[i]; 6253 stmf_abort(STMF_QUEUE_ABORT_LU, task, STMF_ABORTED, 6254 lm_ent->ent_lu); 6255 } 6256 6257 rw_exit(iss->iss_lockp); 6258 mutex_exit(&stmf_state.stmf_lock); 6259 6260 /* Start polling on this task */ 6261 if (stmf_task_poll_lu(task, ITASK_DEFAULT_POLL_TIMEOUT) 6262 != STMF_SUCCESS) { 6263 stmf_abort(STMF_QUEUE_TASK_ABORT, task, STMF_ALLOC_FAILURE, 6264 NULL); 6265 return; 6266 } 6267 } 6268 6269 int 6270 stmf_handle_cmd_during_ic(stmf_i_scsi_task_t *itask) 6271 { 6272 scsi_task_t *task = itask->itask_task; 6273 stmf_i_scsi_session_t *iss = (stmf_i_scsi_session_t *) 6274 task->task_session->ss_stmf_private; 6275 6276 rw_enter(iss->iss_lockp, RW_WRITER); 6277 if (((iss->iss_flags & ISS_LUN_INVENTORY_CHANGED) == 0) || 6278 (task->task_cdb[0] == SCMD_INQUIRY)) { 6279 rw_exit(iss->iss_lockp); 6280 return (0); 6281 } 6282 atomic_and_32(&iss->iss_flags, 6283 ~(ISS_LUN_INVENTORY_CHANGED | ISS_GOT_INITIAL_LUNS)); 6284 rw_exit(iss->iss_lockp); 6285 6286 if (task->task_cdb[0] == SCMD_REPORT_LUNS) { 6287 return (0); 6288 } 6289 stmf_scsilib_send_status(task, STATUS_CHECK, 6290 STMF_SAA_REPORT_LUN_DATA_HAS_CHANGED); 6291 return (1); 6292 } 6293 6294 void 6295 stmf_worker_init() 6296 { 6297 uint32_t i; 6298 6299 /* Make local copy of global tunables */ 6300 stmf_i_max_nworkers = stmf_max_nworkers; 6301 stmf_i_min_nworkers = stmf_min_nworkers; 6302 6303 ASSERT(stmf_workers == NULL); 6304 if (stmf_i_min_nworkers < 4) { 6305 stmf_i_min_nworkers = 4; 6306 } 6307 if (stmf_i_max_nworkers < stmf_i_min_nworkers) { 6308 stmf_i_max_nworkers = stmf_i_min_nworkers; 6309 } 6310 stmf_workers = (stmf_worker_t *)kmem_zalloc( 6311 sizeof (stmf_worker_t) * stmf_i_max_nworkers, KM_SLEEP); 6312 for (i = 0; i < stmf_i_max_nworkers; i++) { 6313 stmf_worker_t *w = &stmf_workers[i]; 6314 mutex_init(&w->worker_lock, NULL, MUTEX_DRIVER, NULL); 6315 cv_init(&w->worker_cv, NULL, CV_DRIVER, NULL); 6316 } 6317 stmf_worker_mgmt_delay = drv_usectohz(20 * 1000); 6318 stmf_workers_state = STMF_WORKERS_ENABLED; 6319 6320 /* Workers will be started by stmf_worker_mgmt() */ 6321 6322 /* Lets wait for atleast one worker to start */ 6323 while (stmf_nworkers_cur == 0) 6324 delay(drv_usectohz(20 * 1000)); 6325 stmf_worker_mgmt_delay = drv_usectohz(3 * 1000 * 1000); 6326 } 6327 6328 stmf_status_t 6329 stmf_worker_fini() 6330 { 6331 int i; 6332 clock_t sb; 6333 6334 if (stmf_workers_state == STMF_WORKERS_DISABLED) 6335 return (STMF_SUCCESS); 6336 ASSERT(stmf_workers); 6337 stmf_workers_state = STMF_WORKERS_DISABLED; 6338 stmf_worker_mgmt_delay = drv_usectohz(20 * 1000); 6339 cv_signal(&stmf_state.stmf_cv); 6340 6341 sb = ddi_get_lbolt() + drv_usectohz(10 * 1000 * 1000); 6342 /* Wait for all the threads to die */ 6343 while (stmf_nworkers_cur != 0) { 6344 if (ddi_get_lbolt() > sb) { 6345 stmf_workers_state = STMF_WORKERS_ENABLED; 6346 return (STMF_BUSY); 6347 } 6348 delay(drv_usectohz(100 * 1000)); 6349 } 6350 for (i = 0; i < stmf_i_max_nworkers; i++) { 6351 stmf_worker_t *w = &stmf_workers[i]; 6352 mutex_destroy(&w->worker_lock); 6353 cv_destroy(&w->worker_cv); 6354 } 6355 kmem_free(stmf_workers, sizeof (stmf_worker_t) * stmf_i_max_nworkers); 6356 stmf_workers = NULL; 6357 6358 return (STMF_SUCCESS); 6359 } 6360 6361 void 6362 stmf_worker_task(void *arg) 6363 { 6364 stmf_worker_t *w; 6365 stmf_i_scsi_session_t *iss; 6366 scsi_task_t *task; 6367 stmf_i_scsi_task_t *itask; 6368 stmf_data_buf_t *dbuf; 6369 stmf_lu_t *lu; 6370 clock_t wait_timer = 0; 6371 clock_t wait_ticks, wait_delta = 0; 6372 uint32_t old, new; 6373 uint8_t curcmd; 6374 uint8_t abort_free; 6375 uint8_t wait_queue; 6376 uint8_t dec_qdepth; 6377 6378 w = (stmf_worker_t *)arg; 6379 wait_ticks = drv_usectohz(10000); 6380 6381 DTRACE_PROBE1(worker__create, stmf_worker_t, w); 6382 mutex_enter(&w->worker_lock); 6383 w->worker_flags |= STMF_WORKER_STARTED | STMF_WORKER_ACTIVE; 6384 stmf_worker_loop:; 6385 if ((w->worker_ref_count == 0) && 6386 (w->worker_flags & STMF_WORKER_TERMINATE)) { 6387 w->worker_flags &= ~(STMF_WORKER_STARTED | 6388 STMF_WORKER_ACTIVE | STMF_WORKER_TERMINATE); 6389 w->worker_tid = NULL; 6390 mutex_exit(&w->worker_lock); 6391 DTRACE_PROBE1(worker__destroy, stmf_worker_t, w); 6392 thread_exit(); 6393 } 6394 /* CONSTCOND */ 6395 while (1) { 6396 dec_qdepth = 0; 6397 if (wait_timer && (ddi_get_lbolt() >= wait_timer)) { 6398 wait_timer = 0; 6399 wait_delta = 0; 6400 if (w->worker_wait_head) { 6401 ASSERT(w->worker_wait_tail); 6402 if (w->worker_task_head == NULL) 6403 w->worker_task_head = 6404 w->worker_wait_head; 6405 else 6406 w->worker_task_tail->itask_worker_next = 6407 w->worker_wait_head; 6408 w->worker_task_tail = w->worker_wait_tail; 6409 w->worker_wait_head = w->worker_wait_tail = 6410 NULL; 6411 } 6412 } 6413 if ((itask = w->worker_task_head) == NULL) { 6414 break; 6415 } 6416 task = itask->itask_task; 6417 DTRACE_PROBE2(worker__active, stmf_worker_t, w, 6418 scsi_task_t *, task); 6419 w->worker_task_head = itask->itask_worker_next; 6420 if (w->worker_task_head == NULL) 6421 w->worker_task_tail = NULL; 6422 6423 wait_queue = 0; 6424 abort_free = 0; 6425 if (itask->itask_ncmds > 0) { 6426 curcmd = itask->itask_cmd_stack[itask->itask_ncmds - 1]; 6427 } else { 6428 ASSERT(itask->itask_flags & ITASK_BEING_ABORTED); 6429 } 6430 do { 6431 old = itask->itask_flags; 6432 if (old & ITASK_BEING_ABORTED) { 6433 itask->itask_ncmds = 1; 6434 curcmd = itask->itask_cmd_stack[0] = 6435 ITASK_CMD_ABORT; 6436 goto out_itask_flag_loop; 6437 } else if ((curcmd & ITASK_CMD_MASK) == 6438 ITASK_CMD_NEW_TASK) { 6439 /* 6440 * set ITASK_KSTAT_IN_RUNQ, this flag 6441 * will not reset until task completed 6442 */ 6443 new = old | ITASK_KNOWN_TO_LU | 6444 ITASK_KSTAT_IN_RUNQ; 6445 } else { 6446 goto out_itask_flag_loop; 6447 } 6448 } while (atomic_cas_32(&itask->itask_flags, old, new) != old); 6449 6450 out_itask_flag_loop: 6451 6452 /* 6453 * Decide if this task needs to go to a queue and/or if 6454 * we can decrement the itask_cmd_stack. 6455 */ 6456 if (curcmd == ITASK_CMD_ABORT) { 6457 if (itask->itask_flags & (ITASK_KNOWN_TO_LU | 6458 ITASK_KNOWN_TO_TGT_PORT)) { 6459 wait_queue = 1; 6460 } else { 6461 abort_free = 1; 6462 } 6463 } else if ((curcmd & ITASK_CMD_POLL) && 6464 (itask->itask_poll_timeout > ddi_get_lbolt())) { 6465 wait_queue = 1; 6466 } 6467 6468 if (wait_queue) { 6469 itask->itask_worker_next = NULL; 6470 if (w->worker_wait_tail) { 6471 w->worker_wait_tail->itask_worker_next = itask; 6472 } else { 6473 w->worker_wait_head = itask; 6474 } 6475 w->worker_wait_tail = itask; 6476 if (wait_timer == 0) { 6477 wait_timer = ddi_get_lbolt() + wait_ticks; 6478 wait_delta = wait_ticks; 6479 } 6480 } else if ((--(itask->itask_ncmds)) != 0) { 6481 itask->itask_worker_next = NULL; 6482 if (w->worker_task_tail) { 6483 w->worker_task_tail->itask_worker_next = itask; 6484 } else { 6485 w->worker_task_head = itask; 6486 } 6487 w->worker_task_tail = itask; 6488 } else { 6489 atomic_and_32(&itask->itask_flags, 6490 ~ITASK_IN_WORKER_QUEUE); 6491 /* 6492 * This is where the queue depth should go down by 6493 * one but we delay that on purpose to account for 6494 * the call into the provider. The actual decrement 6495 * happens after the worker has done its job. 6496 */ 6497 dec_qdepth = 1; 6498 itask->itask_waitq_time += 6499 gethrtime() - itask->itask_waitq_enter_timestamp; 6500 } 6501 6502 /* We made it here means we are going to call LU */ 6503 if ((itask->itask_flags & ITASK_DEFAULT_HANDLING) == 0) 6504 lu = task->task_lu; 6505 else 6506 lu = dlun0; 6507 dbuf = itask->itask_dbufs[ITASK_CMD_BUF_NDX(curcmd)]; 6508 mutex_exit(&w->worker_lock); 6509 curcmd &= ITASK_CMD_MASK; 6510 switch (curcmd) { 6511 case ITASK_CMD_NEW_TASK: 6512 iss = (stmf_i_scsi_session_t *) 6513 task->task_session->ss_stmf_private; 6514 stmf_itl_lu_new_task(itask); 6515 if (iss->iss_flags & ISS_LUN_INVENTORY_CHANGED) { 6516 if (stmf_handle_cmd_during_ic(itask)) 6517 break; 6518 } 6519 #ifdef DEBUG 6520 if (stmf_drop_task_counter > 0) { 6521 if (atomic_add_32_nv( 6522 (uint32_t *)&stmf_drop_task_counter, 6523 -1) == 1) { 6524 break; 6525 } 6526 } 6527 #endif 6528 DTRACE_PROBE1(scsi__task__start, scsi_task_t *, task); 6529 lu->lu_new_task(task, dbuf); 6530 break; 6531 case ITASK_CMD_DATA_XFER_DONE: 6532 lu->lu_dbuf_xfer_done(task, dbuf); 6533 break; 6534 case ITASK_CMD_STATUS_DONE: 6535 lu->lu_send_status_done(task); 6536 break; 6537 case ITASK_CMD_ABORT: 6538 if (abort_free) { 6539 stmf_task_free(task); 6540 } else { 6541 stmf_do_task_abort(task); 6542 } 6543 break; 6544 case ITASK_CMD_POLL_LU: 6545 if (!wait_queue) { 6546 lu->lu_task_poll(task); 6547 } 6548 break; 6549 case ITASK_CMD_POLL_LPORT: 6550 if (!wait_queue) 6551 task->task_lport->lport_task_poll(task); 6552 break; 6553 case ITASK_CMD_SEND_STATUS: 6554 /* case ITASK_CMD_XFER_DATA: */ 6555 break; 6556 } 6557 mutex_enter(&w->worker_lock); 6558 if (dec_qdepth) { 6559 w->worker_queue_depth--; 6560 } 6561 } 6562 if ((w->worker_flags & STMF_WORKER_TERMINATE) && (wait_timer == 0)) { 6563 if (w->worker_ref_count == 0) 6564 goto stmf_worker_loop; 6565 else { 6566 wait_timer = ddi_get_lbolt() + 1; 6567 wait_delta = 1; 6568 } 6569 } 6570 w->worker_flags &= ~STMF_WORKER_ACTIVE; 6571 if (wait_timer) { 6572 DTRACE_PROBE1(worker__timed__sleep, stmf_worker_t, w); 6573 (void) cv_reltimedwait(&w->worker_cv, &w->worker_lock, 6574 wait_delta, TR_CLOCK_TICK); 6575 } else { 6576 DTRACE_PROBE1(worker__sleep, stmf_worker_t, w); 6577 cv_wait(&w->worker_cv, &w->worker_lock); 6578 } 6579 DTRACE_PROBE1(worker__wakeup, stmf_worker_t, w); 6580 w->worker_flags |= STMF_WORKER_ACTIVE; 6581 goto stmf_worker_loop; 6582 } 6583 6584 void 6585 stmf_worker_mgmt() 6586 { 6587 int i; 6588 int workers_needed; 6589 uint32_t qd; 6590 clock_t tps, d = 0; 6591 uint32_t cur_max_ntasks = 0; 6592 stmf_worker_t *w; 6593 6594 /* Check if we are trying to increase the # of threads */ 6595 for (i = stmf_nworkers_cur; i < stmf_nworkers_needed; i++) { 6596 if (stmf_workers[i].worker_flags & STMF_WORKER_STARTED) { 6597 stmf_nworkers_cur++; 6598 stmf_nworkers_accepting_cmds++; 6599 } else { 6600 /* Wait for transition to complete */ 6601 return; 6602 } 6603 } 6604 /* Check if we are trying to decrease the # of workers */ 6605 for (i = (stmf_nworkers_cur - 1); i >= stmf_nworkers_needed; i--) { 6606 if ((stmf_workers[i].worker_flags & STMF_WORKER_STARTED) == 0) { 6607 stmf_nworkers_cur--; 6608 /* 6609 * stmf_nworkers_accepting_cmds has already been 6610 * updated by the request to reduce the # of workers. 6611 */ 6612 } else { 6613 /* Wait for transition to complete */ 6614 return; 6615 } 6616 } 6617 /* Check if we are being asked to quit */ 6618 if (stmf_workers_state != STMF_WORKERS_ENABLED) { 6619 if (stmf_nworkers_cur) { 6620 workers_needed = 0; 6621 goto worker_mgmt_trigger_change; 6622 } 6623 return; 6624 } 6625 /* Check if we are starting */ 6626 if (stmf_nworkers_cur < stmf_i_min_nworkers) { 6627 workers_needed = stmf_i_min_nworkers; 6628 goto worker_mgmt_trigger_change; 6629 } 6630 6631 tps = drv_usectohz(1 * 1000 * 1000); 6632 if ((stmf_wm_last != 0) && 6633 ((d = ddi_get_lbolt() - stmf_wm_last) > tps)) { 6634 qd = 0; 6635 for (i = 0; i < stmf_nworkers_accepting_cmds; i++) { 6636 qd += stmf_workers[i].worker_max_qdepth_pu; 6637 stmf_workers[i].worker_max_qdepth_pu = 0; 6638 if (stmf_workers[i].worker_max_sys_qdepth_pu > 6639 cur_max_ntasks) { 6640 cur_max_ntasks = 6641 stmf_workers[i].worker_max_sys_qdepth_pu; 6642 } 6643 stmf_workers[i].worker_max_sys_qdepth_pu = 0; 6644 } 6645 } 6646 stmf_wm_last = ddi_get_lbolt(); 6647 if (d <= tps) { 6648 /* still ramping up */ 6649 return; 6650 } 6651 /* max qdepth cannot be more than max tasks */ 6652 if (qd > cur_max_ntasks) 6653 qd = cur_max_ntasks; 6654 6655 /* See if we have more workers */ 6656 if (qd < stmf_nworkers_accepting_cmds) { 6657 /* 6658 * Since we dont reduce the worker count right away, monitor 6659 * the highest load during the scale_down_delay. 6660 */ 6661 if (qd > stmf_worker_scale_down_qd) 6662 stmf_worker_scale_down_qd = qd; 6663 if (stmf_worker_scale_down_timer == 0) { 6664 stmf_worker_scale_down_timer = ddi_get_lbolt() + 6665 drv_usectohz(stmf_worker_scale_down_delay * 6666 1000 * 1000); 6667 return; 6668 } 6669 if (ddi_get_lbolt() < stmf_worker_scale_down_timer) { 6670 return; 6671 } 6672 /* Its time to reduce the workers */ 6673 if (stmf_worker_scale_down_qd < stmf_i_min_nworkers) 6674 stmf_worker_scale_down_qd = stmf_i_min_nworkers; 6675 if (stmf_worker_scale_down_qd > stmf_i_max_nworkers) 6676 stmf_worker_scale_down_qd = stmf_i_max_nworkers; 6677 if (stmf_worker_scale_down_qd == stmf_nworkers_cur) 6678 return; 6679 workers_needed = stmf_worker_scale_down_qd; 6680 stmf_worker_scale_down_qd = 0; 6681 goto worker_mgmt_trigger_change; 6682 } 6683 stmf_worker_scale_down_qd = 0; 6684 stmf_worker_scale_down_timer = 0; 6685 if (qd > stmf_i_max_nworkers) 6686 qd = stmf_i_max_nworkers; 6687 if (qd < stmf_i_min_nworkers) 6688 qd = stmf_i_min_nworkers; 6689 if (qd == stmf_nworkers_cur) 6690 return; 6691 workers_needed = qd; 6692 goto worker_mgmt_trigger_change; 6693 6694 /* NOTREACHED */ 6695 return; 6696 6697 worker_mgmt_trigger_change: 6698 ASSERT(workers_needed != stmf_nworkers_cur); 6699 if (workers_needed > stmf_nworkers_cur) { 6700 stmf_nworkers_needed = workers_needed; 6701 for (i = stmf_nworkers_cur; i < workers_needed; i++) { 6702 w = &stmf_workers[i]; 6703 w->worker_tid = thread_create(NULL, 0, stmf_worker_task, 6704 (void *)&stmf_workers[i], 0, &p0, TS_RUN, 6705 minclsyspri); 6706 } 6707 return; 6708 } 6709 /* At this point we know that we are decreasing the # of workers */ 6710 stmf_nworkers_accepting_cmds = workers_needed; 6711 stmf_nworkers_needed = workers_needed; 6712 /* Signal the workers that its time to quit */ 6713 for (i = (stmf_nworkers_cur - 1); i >= stmf_nworkers_needed; i--) { 6714 w = &stmf_workers[i]; 6715 ASSERT(w && (w->worker_flags & STMF_WORKER_STARTED)); 6716 mutex_enter(&w->worker_lock); 6717 w->worker_flags |= STMF_WORKER_TERMINATE; 6718 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0) 6719 cv_signal(&w->worker_cv); 6720 mutex_exit(&w->worker_lock); 6721 } 6722 } 6723 6724 /* 6725 * Fills out a dbuf from stmf_xfer_data_t (contained in the db_lu_private). 6726 * If all the data has been filled out, frees the xd and makes 6727 * db_lu_private NULL. 6728 */ 6729 void 6730 stmf_xd_to_dbuf(stmf_data_buf_t *dbuf) 6731 { 6732 stmf_xfer_data_t *xd; 6733 uint8_t *p; 6734 int i; 6735 uint32_t s; 6736 6737 xd = (stmf_xfer_data_t *)dbuf->db_lu_private; 6738 dbuf->db_data_size = 0; 6739 dbuf->db_relative_offset = xd->size_done; 6740 for (i = 0; i < dbuf->db_sglist_length; i++) { 6741 s = min(xd->size_left, dbuf->db_sglist[i].seg_length); 6742 p = &xd->buf[xd->size_done]; 6743 bcopy(p, dbuf->db_sglist[i].seg_addr, s); 6744 xd->size_left -= s; 6745 xd->size_done += s; 6746 dbuf->db_data_size += s; 6747 if (xd->size_left == 0) { 6748 kmem_free(xd, xd->alloc_size); 6749 dbuf->db_lu_private = NULL; 6750 return; 6751 } 6752 } 6753 } 6754 6755 /* ARGSUSED */ 6756 stmf_status_t 6757 stmf_dlun0_task_alloc(scsi_task_t *task) 6758 { 6759 return (STMF_SUCCESS); 6760 } 6761 6762 void 6763 stmf_dlun0_new_task(scsi_task_t *task, stmf_data_buf_t *dbuf) 6764 { 6765 uint8_t *cdbp = (uint8_t *)&task->task_cdb[0]; 6766 stmf_i_scsi_session_t *iss; 6767 uint32_t sz, minsz; 6768 uint8_t *p; 6769 stmf_xfer_data_t *xd; 6770 uint8_t inq_page_length = 31; 6771 6772 if (task->task_mgmt_function) { 6773 stmf_scsilib_handle_task_mgmt(task); 6774 return; 6775 } 6776 6777 switch (cdbp[0]) { 6778 case SCMD_INQUIRY: 6779 /* 6780 * Basic protocol checks. In addition, only reply to 6781 * standard inquiry. Otherwise, the LU provider needs 6782 * to respond. 6783 */ 6784 6785 if (cdbp[2] || (cdbp[1] & 1) || cdbp[5]) { 6786 stmf_scsilib_send_status(task, STATUS_CHECK, 6787 STMF_SAA_INVALID_FIELD_IN_CDB); 6788 return; 6789 } 6790 6791 task->task_cmd_xfer_length = 6792 (((uint32_t)cdbp[3]) << 8) | cdbp[4]; 6793 6794 if (task->task_additional_flags & 6795 TASK_AF_NO_EXPECTED_XFER_LENGTH) { 6796 task->task_expected_xfer_length = 6797 task->task_cmd_xfer_length; 6798 } 6799 6800 sz = min(task->task_expected_xfer_length, 6801 min(36, task->task_cmd_xfer_length)); 6802 minsz = 36; 6803 6804 if (sz == 0) { 6805 stmf_scsilib_send_status(task, STATUS_GOOD, 0); 6806 return; 6807 } 6808 6809 if (dbuf && (dbuf->db_sglist[0].seg_length < 36)) { 6810 /* 6811 * Ignore any preallocated dbuf if the size is less 6812 * than 36. It will be freed during the task_free. 6813 */ 6814 dbuf = NULL; 6815 } 6816 if (dbuf == NULL) 6817 dbuf = stmf_alloc_dbuf(task, minsz, &minsz, 0); 6818 if ((dbuf == NULL) || (dbuf->db_sglist[0].seg_length < sz)) { 6819 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 6820 STMF_ALLOC_FAILURE, NULL); 6821 return; 6822 } 6823 dbuf->db_lu_private = NULL; 6824 6825 p = dbuf->db_sglist[0].seg_addr; 6826 6827 /* 6828 * Standard inquiry handling only. 6829 */ 6830 6831 bzero(p, inq_page_length + 5); 6832 6833 p[0] = DPQ_SUPPORTED | DTYPE_UNKNOWN; 6834 p[2] = 5; 6835 p[3] = 0x12; 6836 p[4] = inq_page_length; 6837 p[6] = 0x80; 6838 6839 (void) strncpy((char *)p+8, "SUN ", 8); 6840 (void) strncpy((char *)p+16, "COMSTAR ", 16); 6841 (void) strncpy((char *)p+32, "1.0 ", 4); 6842 6843 dbuf->db_data_size = sz; 6844 dbuf->db_relative_offset = 0; 6845 dbuf->db_flags = DB_DIRECTION_TO_RPORT; 6846 (void) stmf_xfer_data(task, dbuf, 0); 6847 6848 return; 6849 6850 case SCMD_REPORT_LUNS: 6851 task->task_cmd_xfer_length = 6852 ((((uint32_t)task->task_cdb[6]) << 24) | 6853 (((uint32_t)task->task_cdb[7]) << 16) | 6854 (((uint32_t)task->task_cdb[8]) << 8) | 6855 ((uint32_t)task->task_cdb[9])); 6856 6857 if (task->task_additional_flags & 6858 TASK_AF_NO_EXPECTED_XFER_LENGTH) { 6859 task->task_expected_xfer_length = 6860 task->task_cmd_xfer_length; 6861 } 6862 6863 sz = min(task->task_expected_xfer_length, 6864 task->task_cmd_xfer_length); 6865 6866 if (sz < 16) { 6867 stmf_scsilib_send_status(task, STATUS_CHECK, 6868 STMF_SAA_INVALID_FIELD_IN_CDB); 6869 return; 6870 } 6871 6872 iss = (stmf_i_scsi_session_t *) 6873 task->task_session->ss_stmf_private; 6874 rw_enter(iss->iss_lockp, RW_WRITER); 6875 xd = stmf_session_prepare_report_lun_data(iss->iss_sm); 6876 rw_exit(iss->iss_lockp); 6877 6878 if (xd == NULL) { 6879 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 6880 STMF_ALLOC_FAILURE, NULL); 6881 return; 6882 } 6883 6884 sz = min(sz, xd->size_left); 6885 xd->size_left = sz; 6886 minsz = min(512, sz); 6887 6888 if (dbuf == NULL) 6889 dbuf = stmf_alloc_dbuf(task, sz, &minsz, 0); 6890 if (dbuf == NULL) { 6891 kmem_free(xd, xd->alloc_size); 6892 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 6893 STMF_ALLOC_FAILURE, NULL); 6894 return; 6895 } 6896 dbuf->db_lu_private = xd; 6897 stmf_xd_to_dbuf(dbuf); 6898 6899 atomic_and_32(&iss->iss_flags, 6900 ~(ISS_LUN_INVENTORY_CHANGED | ISS_GOT_INITIAL_LUNS)); 6901 dbuf->db_flags = DB_DIRECTION_TO_RPORT; 6902 (void) stmf_xfer_data(task, dbuf, 0); 6903 return; 6904 } 6905 6906 stmf_scsilib_send_status(task, STATUS_CHECK, STMF_SAA_INVALID_OPCODE); 6907 } 6908 6909 void 6910 stmf_dlun0_dbuf_done(scsi_task_t *task, stmf_data_buf_t *dbuf) 6911 { 6912 stmf_i_scsi_task_t *itask = 6913 (stmf_i_scsi_task_t *)task->task_stmf_private; 6914 6915 if (dbuf->db_xfer_status != STMF_SUCCESS) { 6916 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 6917 dbuf->db_xfer_status, NULL); 6918 return; 6919 } 6920 task->task_nbytes_transferred = dbuf->db_data_size; 6921 if (dbuf->db_lu_private) { 6922 /* There is more */ 6923 stmf_xd_to_dbuf(dbuf); 6924 (void) stmf_xfer_data(task, dbuf, 0); 6925 return; 6926 } 6927 /* 6928 * If this is a proxy task, it will need to be completed from the 6929 * proxy port provider. This message lets pppt know that the xfer 6930 * is complete. When we receive the status from pppt, we will 6931 * then relay that status back to the lport. 6932 */ 6933 if (itask->itask_flags & ITASK_PROXY_TASK) { 6934 stmf_ic_msg_t *ic_xfer_done_msg = NULL; 6935 stmf_status_t ic_ret = STMF_FAILURE; 6936 uint64_t session_msg_id; 6937 mutex_enter(&stmf_state.stmf_lock); 6938 session_msg_id = stmf_proxy_msg_id++; 6939 mutex_exit(&stmf_state.stmf_lock); 6940 /* send xfer done status to pppt */ 6941 ic_xfer_done_msg = ic_scsi_data_xfer_done_msg_alloc( 6942 itask->itask_proxy_msg_id, 6943 task->task_session->ss_session_id, 6944 STMF_SUCCESS, session_msg_id); 6945 if (ic_xfer_done_msg) { 6946 ic_ret = ic_tx_msg(ic_xfer_done_msg); 6947 if (ic_ret != STMF_IC_MSG_SUCCESS) { 6948 cmn_err(CE_WARN, "unable to xmit session msg"); 6949 } 6950 } 6951 /* task will be completed from pppt */ 6952 return; 6953 } 6954 stmf_scsilib_send_status(task, STATUS_GOOD, 0); 6955 } 6956 6957 /* ARGSUSED */ 6958 void 6959 stmf_dlun0_status_done(scsi_task_t *task) 6960 { 6961 } 6962 6963 /* ARGSUSED */ 6964 void 6965 stmf_dlun0_task_free(scsi_task_t *task) 6966 { 6967 } 6968 6969 /* ARGSUSED */ 6970 stmf_status_t 6971 stmf_dlun0_abort(struct stmf_lu *lu, int abort_cmd, void *arg, uint32_t flags) 6972 { 6973 scsi_task_t *task = (scsi_task_t *)arg; 6974 stmf_i_scsi_task_t *itask = 6975 (stmf_i_scsi_task_t *)task->task_stmf_private; 6976 stmf_i_lu_t *ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 6977 int i; 6978 uint8_t map; 6979 6980 if ((task->task_mgmt_function) && (itask->itask_flags & 6981 (ITASK_CAUSING_LU_RESET | ITASK_CAUSING_TARGET_RESET))) { 6982 switch (task->task_mgmt_function) { 6983 case TM_ABORT_TASK: 6984 case TM_ABORT_TASK_SET: 6985 case TM_CLEAR_TASK_SET: 6986 case TM_LUN_RESET: 6987 atomic_and_32(&ilu->ilu_flags, ~ILU_RESET_ACTIVE); 6988 break; 6989 case TM_TARGET_RESET: 6990 case TM_TARGET_COLD_RESET: 6991 case TM_TARGET_WARM_RESET: 6992 stmf_abort_target_reset(task); 6993 break; 6994 } 6995 return (STMF_ABORT_SUCCESS); 6996 } 6997 6998 /* 6999 * OK so its not a task mgmt. Make sure we free any xd sitting 7000 * inside any dbuf. 7001 */ 7002 if ((map = itask->itask_allocated_buf_map) != 0) { 7003 for (i = 0; i < 4; i++) { 7004 if ((map & 1) && 7005 ((itask->itask_dbufs[i])->db_lu_private)) { 7006 stmf_xfer_data_t *xd; 7007 stmf_data_buf_t *dbuf; 7008 7009 dbuf = itask->itask_dbufs[i]; 7010 xd = (stmf_xfer_data_t *)dbuf->db_lu_private; 7011 dbuf->db_lu_private = NULL; 7012 kmem_free(xd, xd->alloc_size); 7013 } 7014 map >>= 1; 7015 } 7016 } 7017 return (STMF_ABORT_SUCCESS); 7018 } 7019 7020 void 7021 stmf_dlun0_task_poll(struct scsi_task *task) 7022 { 7023 /* Right now we only do this for handling task management functions */ 7024 ASSERT(task->task_mgmt_function); 7025 7026 switch (task->task_mgmt_function) { 7027 case TM_ABORT_TASK: 7028 case TM_ABORT_TASK_SET: 7029 case TM_CLEAR_TASK_SET: 7030 case TM_LUN_RESET: 7031 (void) stmf_lun_reset_poll(task->task_lu, task, 0); 7032 return; 7033 case TM_TARGET_RESET: 7034 case TM_TARGET_COLD_RESET: 7035 case TM_TARGET_WARM_RESET: 7036 stmf_target_reset_poll(task); 7037 return; 7038 } 7039 } 7040 7041 /* ARGSUSED */ 7042 void 7043 stmf_dlun0_ctl(struct stmf_lu *lu, int cmd, void *arg) 7044 { 7045 /* This function will never be called */ 7046 cmn_err(CE_WARN, "stmf_dlun0_ctl called with cmd %x", cmd); 7047 } 7048 7049 void 7050 stmf_dlun_init() 7051 { 7052 stmf_i_lu_t *ilu; 7053 7054 dlun0 = stmf_alloc(STMF_STRUCT_STMF_LU, 0, 0); 7055 dlun0->lu_task_alloc = stmf_dlun0_task_alloc; 7056 dlun0->lu_new_task = stmf_dlun0_new_task; 7057 dlun0->lu_dbuf_xfer_done = stmf_dlun0_dbuf_done; 7058 dlun0->lu_send_status_done = stmf_dlun0_status_done; 7059 dlun0->lu_task_free = stmf_dlun0_task_free; 7060 dlun0->lu_abort = stmf_dlun0_abort; 7061 dlun0->lu_task_poll = stmf_dlun0_task_poll; 7062 dlun0->lu_ctl = stmf_dlun0_ctl; 7063 7064 ilu = (stmf_i_lu_t *)dlun0->lu_stmf_private; 7065 ilu->ilu_cur_task_cntr = &ilu->ilu_task_cntr1; 7066 } 7067 7068 stmf_status_t 7069 stmf_dlun_fini() 7070 { 7071 stmf_i_lu_t *ilu; 7072 7073 ilu = (stmf_i_lu_t *)dlun0->lu_stmf_private; 7074 7075 ASSERT(ilu->ilu_ntasks == ilu->ilu_ntasks_free); 7076 if (ilu->ilu_ntasks) { 7077 stmf_i_scsi_task_t *itask, *nitask; 7078 7079 nitask = ilu->ilu_tasks; 7080 do { 7081 itask = nitask; 7082 nitask = itask->itask_lu_next; 7083 dlun0->lu_task_free(itask->itask_task); 7084 stmf_free(itask->itask_task); 7085 } while (nitask != NULL); 7086 7087 } 7088 stmf_free(dlun0); 7089 return (STMF_SUCCESS); 7090 } 7091 7092 void 7093 stmf_abort_target_reset(scsi_task_t *task) 7094 { 7095 stmf_i_scsi_session_t *iss = (stmf_i_scsi_session_t *) 7096 task->task_session->ss_stmf_private; 7097 stmf_lun_map_t *lm; 7098 stmf_lun_map_ent_t *lm_ent; 7099 stmf_i_lu_t *ilu; 7100 int i; 7101 7102 rw_enter(iss->iss_lockp, RW_READER); 7103 lm = iss->iss_sm; 7104 for (i = 0; i < lm->lm_nentries; i++) { 7105 if (lm->lm_plus[i] == NULL) 7106 continue; 7107 lm_ent = (stmf_lun_map_ent_t *)lm->lm_plus[i]; 7108 ilu = (stmf_i_lu_t *)lm_ent->ent_lu->lu_stmf_private; 7109 if (ilu->ilu_flags & ILU_RESET_ACTIVE) { 7110 atomic_and_32(&ilu->ilu_flags, ~ILU_RESET_ACTIVE); 7111 } 7112 } 7113 atomic_and_32(&iss->iss_flags, ~ISS_RESET_ACTIVE); 7114 rw_exit(iss->iss_lockp); 7115 } 7116 7117 /* 7118 * The return value is only used by function managing target reset. 7119 */ 7120 stmf_status_t 7121 stmf_lun_reset_poll(stmf_lu_t *lu, struct scsi_task *task, int target_reset) 7122 { 7123 stmf_i_lu_t *ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 7124 int ntasks_pending; 7125 7126 ntasks_pending = ilu->ilu_ntasks - ilu->ilu_ntasks_free; 7127 /* 7128 * This function is also used during Target reset. The idea is that 7129 * once all the commands are aborted, call the LU's reset entry 7130 * point (abort entry point with a reset flag). But if this Task 7131 * mgmt is running on this LU then all the tasks cannot be aborted. 7132 * one task (this task) will still be running which is OK. 7133 */ 7134 if ((ntasks_pending == 0) || ((task->task_lu == lu) && 7135 (ntasks_pending == 1))) { 7136 stmf_status_t ret; 7137 7138 if ((task->task_mgmt_function == TM_LUN_RESET) || 7139 (task->task_mgmt_function == TM_TARGET_RESET) || 7140 (task->task_mgmt_function == TM_TARGET_WARM_RESET) || 7141 (task->task_mgmt_function == TM_TARGET_COLD_RESET)) { 7142 ret = lu->lu_abort(lu, STMF_LU_RESET_STATE, task, 0); 7143 } else { 7144 ret = STMF_SUCCESS; 7145 } 7146 if (ret == STMF_SUCCESS) { 7147 atomic_and_32(&ilu->ilu_flags, ~ILU_RESET_ACTIVE); 7148 } 7149 if (target_reset) { 7150 return (ret); 7151 } 7152 if (ret == STMF_SUCCESS) { 7153 stmf_scsilib_send_status(task, STATUS_GOOD, 0); 7154 return (ret); 7155 } 7156 if (ret != STMF_BUSY) { 7157 stmf_abort(STMF_QUEUE_TASK_ABORT, task, ret, NULL); 7158 return (ret); 7159 } 7160 } 7161 7162 if (target_reset) { 7163 /* Tell target reset polling code that we are not done */ 7164 return (STMF_BUSY); 7165 } 7166 7167 if (stmf_task_poll_lu(task, ITASK_DEFAULT_POLL_TIMEOUT) 7168 != STMF_SUCCESS) { 7169 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 7170 STMF_ALLOC_FAILURE, NULL); 7171 return (STMF_SUCCESS); 7172 } 7173 7174 return (STMF_SUCCESS); 7175 } 7176 7177 void 7178 stmf_target_reset_poll(struct scsi_task *task) 7179 { 7180 stmf_i_scsi_session_t *iss = (stmf_i_scsi_session_t *) 7181 task->task_session->ss_stmf_private; 7182 stmf_lun_map_t *lm; 7183 stmf_lun_map_ent_t *lm_ent; 7184 stmf_i_lu_t *ilu; 7185 stmf_status_t ret; 7186 int i; 7187 int not_done = 0; 7188 7189 ASSERT(iss->iss_flags & ISS_RESET_ACTIVE); 7190 7191 rw_enter(iss->iss_lockp, RW_READER); 7192 lm = iss->iss_sm; 7193 for (i = 0; i < lm->lm_nentries; i++) { 7194 if (lm->lm_plus[i] == NULL) 7195 continue; 7196 lm_ent = (stmf_lun_map_ent_t *)lm->lm_plus[i]; 7197 ilu = (stmf_i_lu_t *)lm_ent->ent_lu->lu_stmf_private; 7198 if (ilu->ilu_flags & ILU_RESET_ACTIVE) { 7199 rw_exit(iss->iss_lockp); 7200 ret = stmf_lun_reset_poll(lm_ent->ent_lu, task, 1); 7201 rw_enter(iss->iss_lockp, RW_READER); 7202 if (ret == STMF_SUCCESS) 7203 continue; 7204 not_done = 1; 7205 if (ret != STMF_BUSY) { 7206 rw_exit(iss->iss_lockp); 7207 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 7208 STMF_ABORTED, NULL); 7209 return; 7210 } 7211 } 7212 } 7213 rw_exit(iss->iss_lockp); 7214 7215 if (not_done) { 7216 if (stmf_task_poll_lu(task, ITASK_DEFAULT_POLL_TIMEOUT) 7217 != STMF_SUCCESS) { 7218 stmf_abort(STMF_QUEUE_TASK_ABORT, task, 7219 STMF_ALLOC_FAILURE, NULL); 7220 return; 7221 } 7222 return; 7223 } 7224 7225 atomic_and_32(&iss->iss_flags, ~ISS_RESET_ACTIVE); 7226 7227 stmf_scsilib_send_status(task, STATUS_GOOD, 0); 7228 } 7229 7230 stmf_status_t 7231 stmf_lu_add_event(stmf_lu_t *lu, int eventid) 7232 { 7233 stmf_i_lu_t *ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 7234 7235 if ((eventid < 0) || (eventid >= STMF_MAX_NUM_EVENTS)) { 7236 return (STMF_INVALID_ARG); 7237 } 7238 7239 STMF_EVENT_ADD(ilu->ilu_event_hdl, eventid); 7240 return (STMF_SUCCESS); 7241 } 7242 7243 stmf_status_t 7244 stmf_lu_remove_event(stmf_lu_t *lu, int eventid) 7245 { 7246 stmf_i_lu_t *ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 7247 7248 if (eventid == STMF_EVENT_ALL) { 7249 STMF_EVENT_CLEAR_ALL(ilu->ilu_event_hdl); 7250 return (STMF_SUCCESS); 7251 } 7252 7253 if ((eventid < 0) || (eventid >= STMF_MAX_NUM_EVENTS)) { 7254 return (STMF_INVALID_ARG); 7255 } 7256 7257 STMF_EVENT_REMOVE(ilu->ilu_event_hdl, eventid); 7258 return (STMF_SUCCESS); 7259 } 7260 7261 stmf_status_t 7262 stmf_lport_add_event(stmf_local_port_t *lport, int eventid) 7263 { 7264 stmf_i_local_port_t *ilport = 7265 (stmf_i_local_port_t *)lport->lport_stmf_private; 7266 7267 if ((eventid < 0) || (eventid >= STMF_MAX_NUM_EVENTS)) { 7268 return (STMF_INVALID_ARG); 7269 } 7270 7271 STMF_EVENT_ADD(ilport->ilport_event_hdl, eventid); 7272 return (STMF_SUCCESS); 7273 } 7274 7275 stmf_status_t 7276 stmf_lport_remove_event(stmf_local_port_t *lport, int eventid) 7277 { 7278 stmf_i_local_port_t *ilport = 7279 (stmf_i_local_port_t *)lport->lport_stmf_private; 7280 7281 if (eventid == STMF_EVENT_ALL) { 7282 STMF_EVENT_CLEAR_ALL(ilport->ilport_event_hdl); 7283 return (STMF_SUCCESS); 7284 } 7285 7286 if ((eventid < 0) || (eventid >= STMF_MAX_NUM_EVENTS)) { 7287 return (STMF_INVALID_ARG); 7288 } 7289 7290 STMF_EVENT_REMOVE(ilport->ilport_event_hdl, eventid); 7291 return (STMF_SUCCESS); 7292 } 7293 7294 void 7295 stmf_generate_lu_event(stmf_i_lu_t *ilu, int eventid, void *arg, uint32_t flags) 7296 { 7297 if (STMF_EVENT_ENABLED(ilu->ilu_event_hdl, eventid) && 7298 (ilu->ilu_lu->lu_event_handler != NULL)) { 7299 ilu->ilu_lu->lu_event_handler(ilu->ilu_lu, eventid, arg, flags); 7300 } 7301 } 7302 7303 void 7304 stmf_generate_lport_event(stmf_i_local_port_t *ilport, int eventid, void *arg, 7305 uint32_t flags) 7306 { 7307 if (STMF_EVENT_ENABLED(ilport->ilport_event_hdl, eventid) && 7308 (ilport->ilport_lport->lport_event_handler != NULL)) { 7309 ilport->ilport_lport->lport_event_handler( 7310 ilport->ilport_lport, eventid, arg, flags); 7311 } 7312 } 7313 7314 /* 7315 * With the possibility of having multiple itl sessions pointing to the 7316 * same itl_kstat_info, the ilu_kstat_lock mutex is used to synchronize 7317 * the kstat update of the ilu_kstat_io, itl_kstat_taskq and itl_kstat_lu_xfer 7318 * statistics. 7319 */ 7320 void 7321 stmf_itl_task_start(stmf_i_scsi_task_t *itask) 7322 { 7323 stmf_itl_data_t *itl = itask->itask_itl_datap; 7324 scsi_task_t *task = itask->itask_task; 7325 stmf_i_lu_t *ilu; 7326 7327 if (itl == NULL || task->task_lu == dlun0) 7328 return; 7329 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 7330 mutex_enter(ilu->ilu_kstat_io->ks_lock); 7331 itask->itask_start_timestamp = gethrtime(); 7332 kstat_waitq_enter(KSTAT_IO_PTR(itl->itl_kstat_taskq)); 7333 stmf_update_kstat_lu_q(itask->itask_task, kstat_waitq_enter); 7334 mutex_exit(ilu->ilu_kstat_io->ks_lock); 7335 7336 stmf_update_kstat_lport_q(itask->itask_task, kstat_waitq_enter); 7337 } 7338 7339 void 7340 stmf_itl_lu_new_task(stmf_i_scsi_task_t *itask) 7341 { 7342 stmf_itl_data_t *itl = itask->itask_itl_datap; 7343 scsi_task_t *task = itask->itask_task; 7344 stmf_i_lu_t *ilu; 7345 7346 if (itl == NULL || task->task_lu == dlun0) 7347 return; 7348 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 7349 mutex_enter(ilu->ilu_kstat_io->ks_lock); 7350 kstat_waitq_to_runq(KSTAT_IO_PTR(itl->itl_kstat_taskq)); 7351 stmf_update_kstat_lu_q(itask->itask_task, kstat_waitq_to_runq); 7352 mutex_exit(ilu->ilu_kstat_io->ks_lock); 7353 7354 stmf_update_kstat_lport_q(itask->itask_task, kstat_waitq_to_runq); 7355 } 7356 7357 void 7358 stmf_itl_task_done(stmf_i_scsi_task_t *itask) 7359 { 7360 stmf_itl_data_t *itl = itask->itask_itl_datap; 7361 scsi_task_t *task = itask->itask_task; 7362 kstat_io_t *kip; 7363 hrtime_t elapsed_time; 7364 stmf_kstat_itl_info_t *itli; 7365 stmf_i_lu_t *ilu; 7366 7367 if (itl == NULL || task->task_lu == dlun0) 7368 return; 7369 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 7370 7371 mutex_enter(ilu->ilu_kstat_io->ks_lock); 7372 itli = (stmf_kstat_itl_info_t *)KSTAT_NAMED_PTR(itl->itl_kstat_info); 7373 kip = KSTAT_IO_PTR(itl->itl_kstat_taskq); 7374 7375 itli->i_task_waitq_elapsed.value.ui64 += itask->itask_waitq_time; 7376 7377 itask->itask_done_timestamp = gethrtime(); 7378 elapsed_time = 7379 itask->itask_done_timestamp - itask->itask_start_timestamp; 7380 7381 if (task->task_flags & TF_READ_DATA) { 7382 kip->reads++; 7383 kip->nread += itask->itask_read_xfer; 7384 itli->i_task_read_elapsed.value.ui64 += elapsed_time; 7385 itli->i_lu_read_elapsed.value.ui64 += 7386 itask->itask_lu_read_time; 7387 itli->i_lport_read_elapsed.value.ui64 += 7388 itask->itask_lport_read_time; 7389 } 7390 7391 if (task->task_flags & TF_WRITE_DATA) { 7392 kip->writes++; 7393 kip->nwritten += itask->itask_write_xfer; 7394 itli->i_task_write_elapsed.value.ui64 += elapsed_time; 7395 itli->i_lu_write_elapsed.value.ui64 += 7396 itask->itask_lu_write_time; 7397 itli->i_lport_write_elapsed.value.ui64 += 7398 itask->itask_lport_write_time; 7399 } 7400 7401 if (itask->itask_flags & ITASK_KSTAT_IN_RUNQ) { 7402 kstat_runq_exit(kip); 7403 stmf_update_kstat_lu_q(task, kstat_runq_exit); 7404 mutex_exit(ilu->ilu_kstat_io->ks_lock); 7405 stmf_update_kstat_lport_q(task, kstat_runq_exit); 7406 } else { 7407 kstat_waitq_exit(kip); 7408 stmf_update_kstat_lu_q(task, kstat_waitq_exit); 7409 mutex_exit(ilu->ilu_kstat_io->ks_lock); 7410 stmf_update_kstat_lport_q(task, kstat_waitq_exit); 7411 } 7412 } 7413 7414 void 7415 stmf_lu_xfer_start(scsi_task_t *task) 7416 { 7417 stmf_i_scsi_task_t *itask = task->task_stmf_private; 7418 stmf_itl_data_t *itl = itask->itask_itl_datap; 7419 stmf_i_lu_t *ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 7420 kstat_io_t *kip; 7421 7422 if (itl == NULL || task->task_lu == dlun0) 7423 return; 7424 7425 kip = KSTAT_IO_PTR(itl->itl_kstat_lu_xfer); 7426 mutex_enter(ilu->ilu_kstat_io->ks_lock); 7427 kstat_runq_enter(kip); 7428 mutex_exit(ilu->ilu_kstat_io->ks_lock); 7429 } 7430 7431 void 7432 stmf_lu_xfer_done(scsi_task_t *task, boolean_t read, uint64_t xfer_bytes, 7433 hrtime_t elapsed_time) 7434 { 7435 stmf_i_scsi_task_t *itask = task->task_stmf_private; 7436 stmf_itl_data_t *itl = itask->itask_itl_datap; 7437 stmf_i_lu_t *ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private; 7438 kstat_io_t *kip; 7439 7440 if (itl == NULL || task->task_lu == dlun0) 7441 return; 7442 7443 if (read) { 7444 atomic_add_64((uint64_t *)&itask->itask_lu_read_time, 7445 elapsed_time); 7446 } else { 7447 atomic_add_64((uint64_t *)&itask->itask_lu_write_time, 7448 elapsed_time); 7449 } 7450 7451 kip = KSTAT_IO_PTR(itl->itl_kstat_lu_xfer); 7452 mutex_enter(ilu->ilu_kstat_io->ks_lock); 7453 kstat_runq_exit(kip); 7454 if (read) { 7455 kip->reads++; 7456 kip->nread += xfer_bytes; 7457 } else { 7458 kip->writes++; 7459 kip->nwritten += xfer_bytes; 7460 } 7461 mutex_exit(ilu->ilu_kstat_io->ks_lock); 7462 } 7463 7464 static void 7465 stmf_lport_xfer_start(stmf_i_scsi_task_t *itask, stmf_data_buf_t *dbuf) 7466 { 7467 stmf_itl_data_t *itl = itask->itask_itl_datap; 7468 7469 if (itl == NULL) 7470 return; 7471 7472 DTRACE_PROBE2(scsi__xfer__start, scsi_task_t *, itask->itask_task, 7473 stmf_data_buf_t *, dbuf); 7474 7475 dbuf->db_xfer_start_timestamp = gethrtime(); 7476 } 7477 7478 static void 7479 stmf_lport_xfer_done(stmf_i_scsi_task_t *itask, stmf_data_buf_t *dbuf) 7480 { 7481 stmf_itl_data_t *itl = itask->itask_itl_datap; 7482 scsi_task_t *task; 7483 stmf_i_local_port_t *ilp; 7484 kstat_io_t *kip; 7485 hrtime_t elapsed_time; 7486 uint64_t xfer_size; 7487 7488 if (itl == NULL) 7489 return; 7490 7491 task = (scsi_task_t *)itask->itask_task; 7492 ilp = (stmf_i_local_port_t *)task->task_lport->lport_stmf_private; 7493 xfer_size = (dbuf->db_xfer_status == STMF_SUCCESS) ? 7494 dbuf->db_data_size : 0; 7495 7496 elapsed_time = gethrtime() - dbuf->db_xfer_start_timestamp; 7497 if (dbuf->db_flags & DB_DIRECTION_TO_RPORT) { 7498 atomic_add_64((uint64_t *)&itask->itask_lport_read_time, 7499 elapsed_time); 7500 atomic_add_64((uint64_t *)&itask->itask_read_xfer, 7501 xfer_size); 7502 } else { 7503 atomic_add_64((uint64_t *)&itask->itask_lport_write_time, 7504 elapsed_time); 7505 atomic_add_64((uint64_t *)&itask->itask_write_xfer, 7506 xfer_size); 7507 } 7508 7509 DTRACE_PROBE3(scsi__xfer__end, scsi_task_t *, itask->itask_task, 7510 stmf_data_buf_t *, dbuf, hrtime_t, elapsed_time); 7511 7512 kip = KSTAT_IO_PTR(itl->itl_kstat_lport_xfer); 7513 mutex_enter(ilp->ilport_kstat_io->ks_lock); 7514 if (dbuf->db_flags & DB_DIRECTION_TO_RPORT) { 7515 kip->reads++; 7516 kip->nread += xfer_size; 7517 } else { 7518 kip->writes++; 7519 kip->nwritten += xfer_size; 7520 } 7521 mutex_exit(ilp->ilport_kstat_io->ks_lock); 7522 7523 dbuf->db_xfer_start_timestamp = 0; 7524 } 7525 7526 void 7527 stmf_svc_init() 7528 { 7529 if (stmf_state.stmf_svc_flags & STMF_SVC_STARTED) 7530 return; 7531 stmf_state.stmf_svc_taskq = ddi_taskq_create(0, "STMF_SVC_TASKQ", 1, 7532 TASKQ_DEFAULTPRI, 0); 7533 (void) ddi_taskq_dispatch(stmf_state.stmf_svc_taskq, 7534 stmf_svc, 0, DDI_SLEEP); 7535 } 7536 7537 stmf_status_t 7538 stmf_svc_fini() 7539 { 7540 uint32_t i; 7541 7542 mutex_enter(&stmf_state.stmf_lock); 7543 if (stmf_state.stmf_svc_flags & STMF_SVC_STARTED) { 7544 stmf_state.stmf_svc_flags |= STMF_SVC_TERMINATE; 7545 cv_signal(&stmf_state.stmf_cv); 7546 } 7547 mutex_exit(&stmf_state.stmf_lock); 7548 7549 /* Wait for 5 seconds */ 7550 for (i = 0; i < 500; i++) { 7551 if (stmf_state.stmf_svc_flags & STMF_SVC_STARTED) 7552 delay(drv_usectohz(10000)); 7553 else 7554 break; 7555 } 7556 if (i == 500) 7557 return (STMF_BUSY); 7558 7559 ddi_taskq_destroy(stmf_state.stmf_svc_taskq); 7560 7561 return (STMF_SUCCESS); 7562 } 7563 7564 /* ARGSUSED */ 7565 void 7566 stmf_svc(void *arg) 7567 { 7568 stmf_svc_req_t *req, **preq; 7569 clock_t td; 7570 clock_t drain_start, drain_next = 0; 7571 clock_t timing_start, timing_next = 0; 7572 clock_t worker_delay = 0; 7573 int deq; 7574 stmf_lu_t *lu; 7575 stmf_i_lu_t *ilu; 7576 stmf_local_port_t *lport; 7577 stmf_i_local_port_t *ilport, *next_ilport; 7578 stmf_i_scsi_session_t *iss; 7579 7580 td = drv_usectohz(20000); 7581 7582 mutex_enter(&stmf_state.stmf_lock); 7583 stmf_state.stmf_svc_flags |= STMF_SVC_STARTED | STMF_SVC_ACTIVE; 7584 7585 stmf_svc_loop: 7586 if (stmf_state.stmf_svc_flags & STMF_SVC_TERMINATE) { 7587 stmf_state.stmf_svc_flags &= 7588 ~(STMF_SVC_STARTED | STMF_SVC_ACTIVE); 7589 mutex_exit(&stmf_state.stmf_lock); 7590 return; 7591 } 7592 7593 if (stmf_state.stmf_svc_active) { 7594 int waitq_add = 0; 7595 req = stmf_state.stmf_svc_active; 7596 stmf_state.stmf_svc_active = req->svc_next; 7597 7598 switch (req->svc_cmd) { 7599 case STMF_CMD_LPORT_ONLINE: 7600 /* Fallthrough */ 7601 case STMF_CMD_LPORT_OFFLINE: 7602 /* Fallthrough */ 7603 case STMF_CMD_LU_ONLINE: 7604 /* Nothing to do */ 7605 waitq_add = 1; 7606 break; 7607 7608 case STMF_CMD_LU_OFFLINE: 7609 /* Remove all mappings of this LU */ 7610 stmf_session_lu_unmapall((stmf_lu_t *)req->svc_obj); 7611 /* Kill all the pending I/Os for this LU */ 7612 mutex_exit(&stmf_state.stmf_lock); 7613 stmf_task_lu_killall((stmf_lu_t *)req->svc_obj, NULL, 7614 STMF_ABORTED); 7615 mutex_enter(&stmf_state.stmf_lock); 7616 waitq_add = 1; 7617 break; 7618 default: 7619 cmn_err(CE_PANIC, "stmf_svc: unknown cmd %d", 7620 req->svc_cmd); 7621 } 7622 7623 if (waitq_add) { 7624 /* Put it in the wait queue */ 7625 req->svc_next = stmf_state.stmf_svc_waiting; 7626 stmf_state.stmf_svc_waiting = req; 7627 } 7628 } 7629 7630 /* The waiting list is not going to be modified by anybody else */ 7631 mutex_exit(&stmf_state.stmf_lock); 7632 7633 for (preq = &stmf_state.stmf_svc_waiting; (*preq) != NULL; ) { 7634 req = *preq; 7635 deq = 0; 7636 7637 switch (req->svc_cmd) { 7638 case STMF_CMD_LU_ONLINE: 7639 lu = (stmf_lu_t *)req->svc_obj; 7640 deq = 1; 7641 lu->lu_ctl(lu, req->svc_cmd, &req->svc_info); 7642 break; 7643 7644 case STMF_CMD_LU_OFFLINE: 7645 lu = (stmf_lu_t *)req->svc_obj; 7646 ilu = (stmf_i_lu_t *)lu->lu_stmf_private; 7647 if (ilu->ilu_ntasks != ilu->ilu_ntasks_free) 7648 break; 7649 deq = 1; 7650 lu->lu_ctl(lu, req->svc_cmd, &req->svc_info); 7651 break; 7652 7653 case STMF_CMD_LPORT_OFFLINE: 7654 /* Fallthrough */ 7655 case STMF_CMD_LPORT_ONLINE: 7656 lport = (stmf_local_port_t *)req->svc_obj; 7657 deq = 1; 7658 lport->lport_ctl(lport, req->svc_cmd, &req->svc_info); 7659 break; 7660 } 7661 if (deq) { 7662 *preq = req->svc_next; 7663 kmem_free(req, req->svc_req_alloc_size); 7664 } else { 7665 preq = &req->svc_next; 7666 } 7667 } 7668 7669 mutex_enter(&stmf_state.stmf_lock); 7670 if (stmf_state.stmf_svc_active == NULL) { 7671 /* Do timeouts */ 7672 if (stmf_state.stmf_nlus && 7673 ((!timing_next) || (ddi_get_lbolt() >= timing_next))) { 7674 if (!stmf_state.stmf_svc_ilu_timing) { 7675 /* we are starting a new round */ 7676 stmf_state.stmf_svc_ilu_timing = 7677 stmf_state.stmf_ilulist; 7678 timing_start = ddi_get_lbolt(); 7679 } 7680 stmf_check_ilu_timing(); 7681 if (!stmf_state.stmf_svc_ilu_timing) { 7682 /* we finished a complete round */ 7683 timing_next = 7684 timing_start + drv_usectohz(5*1000*1000); 7685 } else { 7686 /* we still have some ilu items to check */ 7687 timing_next = 7688 ddi_get_lbolt() + drv_usectohz(1*1000*1000); 7689 } 7690 if (stmf_state.stmf_svc_active) 7691 goto stmf_svc_loop; 7692 } 7693 /* Check if there are free tasks to clear */ 7694 if (stmf_state.stmf_nlus && 7695 ((!drain_next) || (ddi_get_lbolt() >= drain_next))) { 7696 if (!stmf_state.stmf_svc_ilu_draining) { 7697 /* we are starting a new round */ 7698 stmf_state.stmf_svc_ilu_draining = 7699 stmf_state.stmf_ilulist; 7700 drain_start = ddi_get_lbolt(); 7701 } 7702 stmf_check_freetask(); 7703 if (!stmf_state.stmf_svc_ilu_draining) { 7704 /* we finished a complete round */ 7705 drain_next = 7706 drain_start + drv_usectohz(10*1000*1000); 7707 } else { 7708 /* we still have some ilu items to check */ 7709 drain_next = 7710 ddi_get_lbolt() + drv_usectohz(1*1000*1000); 7711 } 7712 if (stmf_state.stmf_svc_active) 7713 goto stmf_svc_loop; 7714 } 7715 7716 /* Check if we need to run worker_mgmt */ 7717 if (ddi_get_lbolt() > worker_delay) { 7718 stmf_worker_mgmt(); 7719 worker_delay = ddi_get_lbolt() + 7720 stmf_worker_mgmt_delay; 7721 } 7722 7723 /* Check if any active session got its 1st LUN */ 7724 if (stmf_state.stmf_process_initial_luns) { 7725 int stmf_level = 0; 7726 int port_level; 7727 for (ilport = stmf_state.stmf_ilportlist; ilport; 7728 ilport = next_ilport) { 7729 int ilport_lock_held; 7730 next_ilport = ilport->ilport_next; 7731 if ((ilport->ilport_flags & 7732 ILPORT_SS_GOT_INITIAL_LUNS) == 0) { 7733 continue; 7734 } 7735 port_level = 0; 7736 rw_enter(&ilport->ilport_lock, RW_READER); 7737 ilport_lock_held = 1; 7738 for (iss = ilport->ilport_ss_list; iss; 7739 iss = iss->iss_next) { 7740 if ((iss->iss_flags & 7741 ISS_GOT_INITIAL_LUNS) == 0) { 7742 continue; 7743 } 7744 port_level++; 7745 stmf_level++; 7746 atomic_and_32(&iss->iss_flags, 7747 ~ISS_GOT_INITIAL_LUNS); 7748 atomic_or_32(&iss->iss_flags, 7749 ISS_EVENT_ACTIVE); 7750 rw_exit(&ilport->ilport_lock); 7751 ilport_lock_held = 0; 7752 mutex_exit(&stmf_state.stmf_lock); 7753 stmf_generate_lport_event(ilport, 7754 LPORT_EVENT_INITIAL_LUN_MAPPED, 7755 iss->iss_ss, 0); 7756 atomic_and_32(&iss->iss_flags, 7757 ~ISS_EVENT_ACTIVE); 7758 mutex_enter(&stmf_state.stmf_lock); 7759 /* 7760 * scan all the ilports again as the 7761 * ilport list might have changed. 7762 */ 7763 next_ilport = 7764 stmf_state.stmf_ilportlist; 7765 break; 7766 } 7767 if (port_level == 0) { 7768 atomic_and_32(&ilport->ilport_flags, 7769 ~ILPORT_SS_GOT_INITIAL_LUNS); 7770 } 7771 /* drop the lock if we are holding it. */ 7772 if (ilport_lock_held == 1) 7773 rw_exit(&ilport->ilport_lock); 7774 7775 /* Max 4 session at a time */ 7776 if (stmf_level >= 4) { 7777 break; 7778 } 7779 } 7780 if (stmf_level == 0) { 7781 stmf_state.stmf_process_initial_luns = 0; 7782 } 7783 } 7784 7785 stmf_state.stmf_svc_flags &= ~STMF_SVC_ACTIVE; 7786 (void) cv_reltimedwait(&stmf_state.stmf_cv, 7787 &stmf_state.stmf_lock, td, TR_CLOCK_TICK); 7788 stmf_state.stmf_svc_flags |= STMF_SVC_ACTIVE; 7789 } 7790 goto stmf_svc_loop; 7791 } 7792 7793 void 7794 stmf_svc_queue(int cmd, void *obj, stmf_state_change_info_t *info) 7795 { 7796 stmf_svc_req_t *req; 7797 int s; 7798 7799 ASSERT(!mutex_owned(&stmf_state.stmf_lock)); 7800 s = sizeof (stmf_svc_req_t); 7801 if (info->st_additional_info) { 7802 s += strlen(info->st_additional_info) + 1; 7803 } 7804 req = kmem_zalloc(s, KM_SLEEP); 7805 7806 req->svc_cmd = cmd; 7807 req->svc_obj = obj; 7808 req->svc_info.st_rflags = info->st_rflags; 7809 if (info->st_additional_info) { 7810 req->svc_info.st_additional_info = (char *)(GET_BYTE_OFFSET(req, 7811 sizeof (stmf_svc_req_t))); 7812 (void) strcpy(req->svc_info.st_additional_info, 7813 info->st_additional_info); 7814 } 7815 req->svc_req_alloc_size = s; 7816 7817 mutex_enter(&stmf_state.stmf_lock); 7818 req->svc_next = stmf_state.stmf_svc_active; 7819 stmf_state.stmf_svc_active = req; 7820 if ((stmf_state.stmf_svc_flags & STMF_SVC_ACTIVE) == 0) { 7821 cv_signal(&stmf_state.stmf_cv); 7822 } 7823 mutex_exit(&stmf_state.stmf_lock); 7824 } 7825 7826 void 7827 stmf_trace(caddr_t ident, const char *fmt, ...) 7828 { 7829 va_list args; 7830 char tbuf[160]; 7831 int len; 7832 7833 if (!stmf_trace_on) 7834 return; 7835 len = snprintf(tbuf, 158, "%s:%07lu: ", ident ? ident : "", 7836 ddi_get_lbolt()); 7837 va_start(args, fmt); 7838 len += vsnprintf(tbuf + len, 158 - len, fmt, args); 7839 va_end(args); 7840 7841 if (len > 158) { 7842 len = 158; 7843 } 7844 tbuf[len++] = '\n'; 7845 tbuf[len] = 0; 7846 7847 mutex_enter(&trace_buf_lock); 7848 bcopy(tbuf, &stmf_trace_buf[trace_buf_curndx], len+1); 7849 trace_buf_curndx += len; 7850 if (trace_buf_curndx > (trace_buf_size - 320)) 7851 trace_buf_curndx = 0; 7852 mutex_exit(&trace_buf_lock); 7853 } 7854 7855 void 7856 stmf_trace_clear() 7857 { 7858 if (!stmf_trace_on) 7859 return; 7860 mutex_enter(&trace_buf_lock); 7861 trace_buf_curndx = 0; 7862 if (trace_buf_size > 0) 7863 stmf_trace_buf[0] = 0; 7864 mutex_exit(&trace_buf_lock); 7865 } 7866 7867 static void 7868 stmf_abort_task_offline(scsi_task_t *task, int offline_lu, char *info) 7869 { 7870 stmf_state_change_info_t change_info; 7871 void *ctl_private; 7872 uint32_t ctl_cmd; 7873 int msg = 0; 7874 7875 stmf_trace("FROM STMF", "abort_task_offline called for %s: %s", 7876 offline_lu ? "LU" : "LPORT", info ? info : "no additional info"); 7877 change_info.st_additional_info = info; 7878 if (offline_lu) { 7879 change_info.st_rflags = STMF_RFLAG_RESET | 7880 STMF_RFLAG_LU_ABORT; 7881 ctl_private = task->task_lu; 7882 if (((stmf_i_lu_t *) 7883 task->task_lu->lu_stmf_private)->ilu_state == 7884 STMF_STATE_ONLINE) { 7885 msg = 1; 7886 } 7887 ctl_cmd = STMF_CMD_LU_OFFLINE; 7888 } else { 7889 change_info.st_rflags = STMF_RFLAG_RESET | 7890 STMF_RFLAG_LPORT_ABORT; 7891 ctl_private = task->task_lport; 7892 if (((stmf_i_local_port_t *) 7893 task->task_lport->lport_stmf_private)->ilport_state == 7894 STMF_STATE_ONLINE) { 7895 msg = 1; 7896 } 7897 ctl_cmd = STMF_CMD_LPORT_OFFLINE; 7898 } 7899 7900 if (msg) { 7901 stmf_trace(0, "Calling stmf_ctl to offline %s : %s", 7902 offline_lu ? "LU" : "LPORT", info ? info : 7903 "<no additional info>"); 7904 } 7905 (void) stmf_ctl(ctl_cmd, ctl_private, &change_info); 7906 } 7907