1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. 23 * Copyright (c) 2013 by Delphix. All rights reserved. 24 */ 25 #ifndef _STMF_IMPL_H 26 #define _STMF_IMPL_H 27 28 #include <sys/stmf_defines.h> 29 #include <sys/stmf_ioctl.h> 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 typedef uint32_t stmf_event_handle_t; 36 #define STMF_MAX_NUM_EVENTS (sizeof (stmf_event_handle_t) * 8) 37 #define STMF_EVENT_ADD(h, e) (atomic_or_32(&(h), \ 38 ((uint32_t)1) << (e))) 39 #define STMF_EVENT_REMOVE(h, e) (atomic_and_32(&(h), \ 40 ~(((uint32_t)1) << (e)))) 41 #define STMF_EVENT_ENABLED(h, e) (((h) & ((uint32_t)1) << (e)) != 0) 42 #define STMF_EVENT_CLEAR_ALL(h) ((h) = 0) 43 #define STMF_EVENT_ALLOC_HANDLE(h) ((h) = 0) 44 #define STMF_EVENT_FREE_HANDLE(h) ((h) = 0) 45 46 #define STMF_TGT_NAME_LEN 256 47 #define STMF_GUID_INPUT 32 48 49 #define STMF_UPDATE_KSTAT_IO(kip, dbuf) \ 50 if (dbuf->db_flags & DB_DIRECTION_TO_RPORT) { \ 51 kip->reads++; \ 52 kip->nread += dbuf->db_data_size; \ 53 } else { \ 54 kip->writes++; \ 55 kip->nwritten += dbuf->db_data_size; \ 56 } 57 58 struct stmf_i_scsi_task; 59 struct stmf_itl_data; 60 61 typedef struct stmf_i_lu_provider { 62 stmf_lu_provider_t *ilp_lp; 63 uint32_t ilp_alloc_size; 64 uint32_t ilp_nlus; /* # LUNs being exported */ 65 uint32_t ilp_cb_in_progress:1, 66 ilp_rsvd:31; 67 struct stmf_i_lu_provider *ilp_next; 68 struct stmf_pp_data *ilp_ppd; 69 } stmf_i_lu_provider_t; 70 71 typedef struct stmf_i_lu { 72 stmf_lu_t *ilu_lu; 73 uint32_t ilu_alloc_size; 74 uint32_t ilu_flags; 75 uint32_t ilu_ref_cnt; 76 uint8_t ilu_state; 77 uint8_t ilu_prev_state; 78 uint8_t ilu_access; 79 uint8_t ilu_alua; 80 stmf_event_handle_t ilu_event_hdl; 81 struct stmf_i_lu *ilu_next; 82 struct stmf_i_lu *ilu_prev; 83 char *ilu_alias; 84 char ilu_ascii_hex_guid[STMF_GUID_INPUT + 1]; 85 kmutex_t ilu_task_lock; 86 uint32_t ilu_task_cntr1; 87 uint32_t ilu_task_cntr2; 88 uint32_t *ilu_cur_task_cntr; 89 uint32_t ilu_ntasks; /* # of tasks in the ilu_task list */ 90 uint32_t ilu_ntasks_free; /* # of tasks that are free */ 91 uint32_t ilu_ntasks_min_free; /* # minimal free tasks */ 92 uint32_t rsvd1; 93 uint32_t ilu_proxy_registered; 94 uint64_t ilu_reg_msgid; 95 struct stmf_i_scsi_task *ilu_tasks; 96 struct stmf_i_scsi_task *ilu_free_tasks; 97 struct stmf_itl_data *ilu_itl_list; 98 kstat_t *ilu_kstat_info; 99 kstat_t *ilu_kstat_io; 100 kmutex_t ilu_kstat_lock; 101 kcondvar_t ilu_offline_pending_cv; 102 103 /* point to the luid entry in stmf_state.stmf_luid_list */ 104 void *ilu_luid; 105 } stmf_i_lu_t; 106 107 /* 108 * ilu_flags 109 */ 110 #define ILU_STALL_DEREGISTER 0x0001 111 #define ILU_RESET_ACTIVE 0x0002 112 113 typedef struct stmf_i_port_provider { 114 stmf_port_provider_t *ipp_pp; 115 uint32_t ipp_alloc_size; 116 uint32_t ipp_npps; 117 uint32_t ipp_cb_in_progress:1, 118 ipp_rsvd:31; 119 struct stmf_i_port_provider *ipp_next; 120 struct stmf_pp_data *ipp_ppd; 121 } stmf_i_port_provider_t; 122 123 #define MAX_ILPORT 0x10000 124 125 typedef struct stmf_i_local_port { 126 stmf_local_port_t *ilport_lport; 127 uint32_t ilport_alloc_size; 128 uint32_t ilport_nsessions; 129 struct stmf_i_scsi_session *ilport_ss_list; 130 krwlock_t ilport_lock; 131 struct stmf_i_local_port *ilport_next; 132 struct stmf_i_local_port *ilport_prev; 133 uint8_t ilport_state; 134 uint8_t ilport_prev_state; 135 uint8_t ilport_standby; 136 uint8_t ilport_alua; 137 uint16_t ilport_rtpid; /* relative tpid */ 138 uint16_t ilport_proxy_registered; 139 uint64_t ilport_reg_msgid; 140 uint8_t ilport_no_standby_lu; 141 uint32_t ilport_unexpected_comp; 142 stmf_event_handle_t ilport_event_hdl; 143 clock_t ilport_last_online_clock; 144 clock_t ilport_avg_interval; 145 uint32_t ilport_online_times; 146 uint32_t ilport_flags; 147 kstat_t *ilport_kstat_info; 148 kstat_t *ilport_kstat_io; 149 kmutex_t ilport_kstat_lock; 150 char ilport_kstat_tgt_name[STMF_TGT_NAME_LEN]; 151 /* which target group this port belongs to in stmf_state.stmf_tg_list */ 152 void *ilport_tg; 153 id_t ilport_instance; 154 /* XXX Need something to track all the remote ports also */ 155 } stmf_i_local_port_t; 156 157 #define STMF_AVG_ONLINE_INTERVAL (30 * drv_usectohz(1000000)) 158 159 #define MAX_IRPORT 0x10000 160 161 typedef struct stmf_i_remote_port { 162 struct scsi_devid_desc *irport_id; 163 kmutex_t irport_mutex; 164 int irport_refcnt; 165 id_t irport_instance; 166 avl_node_t irport_ln; 167 } stmf_i_remote_port_t; 168 169 /* 170 * ilport flags 171 */ 172 #define ILPORT_FORCED_OFFLINE 0x01 173 #define ILPORT_SS_GOT_INITIAL_LUNS 0x02 174 175 typedef struct stmf_i_scsi_session { 176 stmf_scsi_session_t *iss_ss; 177 uint32_t iss_alloc_size; 178 uint32_t iss_flags; 179 stmf_i_remote_port_t *iss_irport; 180 struct stmf_i_scsi_session *iss_next; 181 /* 182 * Ideally we should maintain 2 maps. One would indicate a new map 183 * which will become available only upon receipt of a REPORT LUN 184 * cmd. 185 */ 186 struct stmf_lun_map *iss_sm; 187 /* 188 * which host group the host of this session belongs to in 189 * stmf_state.stmf_hg_list 190 */ 191 void *iss_hg; 192 krwlock_t *iss_lockp; 193 time_t iss_creation_time; 194 } stmf_i_scsi_session_t; 195 196 /* 197 * iss flags 198 */ 199 #define ISS_LUN_INVENTORY_CHANGED 0x0001 200 #define ISS_RESET_ACTIVE 0x0002 201 #define ISS_BEING_CREATED 0x0004 202 #define ISS_GOT_INITIAL_LUNS 0x0008 203 #define ISS_EVENT_ACTIVE 0x0010 204 #define ISS_NULL_TPTID 0x0020 205 206 #define ITASK_MAX_NCMDS 14 207 #define ITASK_DEFAULT_POLL_TIMEOUT 0 208 209 #define ITASK_TASK_AUDIT_DEPTH 32 /* Must be a power of 2 */ 210 211 typedef enum { 212 TE_UNDEFINED, 213 TE_TASK_START, 214 TE_XFER_START, 215 TE_XFER_DONE, 216 TE_SEND_STATUS, 217 TE_SEND_STATUS_DONE, 218 TE_TASK_FREE, 219 TE_TASK_ABORT, 220 TE_TASK_LPORT_ABORTED, 221 TE_TASK_LU_ABORTED, 222 TE_PROCESS_CMD 223 } task_audit_event_t; 224 225 #define CMD_OR_IOF_NA 0xffffffff 226 227 typedef struct stmf_task_audit_rec { 228 task_audit_event_t ta_event; 229 uint32_t ta_cmd_or_iof; 230 uint32_t ta_itask_flags; 231 stmf_data_buf_t *ta_dbuf; 232 timespec_t ta_timestamp; 233 } stmf_task_audit_rec_t; 234 235 struct stmf_worker; 236 typedef struct stmf_i_scsi_task { 237 scsi_task_t *itask_task; 238 uint32_t itask_alloc_size; 239 uint32_t itask_flags; 240 uint64_t itask_proxy_msg_id; 241 stmf_data_buf_t *itask_proxy_dbuf; 242 struct stmf_worker *itask_worker; 243 uint32_t *itask_ilu_task_cntr; 244 struct stmf_i_scsi_task *itask_worker_next; 245 struct stmf_i_scsi_task *itask_lu_next; 246 struct stmf_i_scsi_task *itask_lu_prev; 247 struct stmf_i_scsi_task *itask_lu_free_next; 248 struct stmf_i_scsi_task *itask_abort_next; 249 struct stmf_itl_data *itask_itl_datap; 250 clock_t itask_start_time; /* abort and normal */ 251 /* For now we only support 4 parallel buffers. Should be enough. */ 252 stmf_data_buf_t *itask_dbufs[4]; 253 clock_t itask_poll_timeout; 254 uint8_t itask_cmd_stack[ITASK_MAX_NCMDS]; 255 uint8_t itask_ncmds; 256 uint8_t itask_allocated_buf_map; 257 uint16_t itask_cdb_buf_size; 258 259 /* Task profile data */ 260 hrtime_t itask_start_timestamp; 261 hrtime_t itask_done_timestamp; 262 hrtime_t itask_waitq_enter_timestamp; 263 hrtime_t itask_waitq_time; 264 hrtime_t itask_lu_read_time; 265 hrtime_t itask_lu_write_time; 266 hrtime_t itask_lport_read_time; 267 hrtime_t itask_lport_write_time; 268 uint64_t itask_read_xfer; 269 uint64_t itask_write_xfer; 270 kmutex_t itask_audit_mutex; 271 uint8_t itask_audit_index; 272 stmf_task_audit_rec_t itask_audit_records[ITASK_TASK_AUDIT_DEPTH]; 273 } stmf_i_scsi_task_t; 274 275 #define ITASK_DEFAULT_ABORT_TIMEOUT 5 276 277 /* 278 * itask_flags 279 */ 280 #define ITASK_IN_FREE_LIST 0x0001 281 #define ITASK_IN_TRANSITION 0x0002 282 #define ITASK_IN_WORKER_QUEUE 0x0004 283 #define ITASK_BEING_ABORTED 0x0008 284 #define ITASK_BEING_COMPLETED 0x0010 285 #define ITASK_KNOWN_TO_TGT_PORT 0x0020 286 #define ITASK_KNOWN_TO_LU 0x0040 287 #define ITASK_LU_ABORT_CALLED 0x0080 288 #define ITASK_TGT_PORT_ABORT_CALLED 0x0100 289 #define ITASK_DEFAULT_HANDLING 0x0200 290 #define ITASK_CAUSING_LU_RESET 0x0400 291 #define ITASK_CAUSING_TARGET_RESET 0x0800 292 #define ITASK_KSTAT_IN_RUNQ 0x1000 293 #define ITASK_PROXY_TASK 0x2000 294 295 /* 296 * itask cmds. 297 */ 298 #define ITASK_CMD_MASK 0x1F 299 #define ITASK_CMD_BUF_NDX(cmd) (((uint8_t)(cmd)) >> 5) 300 #define ITASK_CMD_NEW_TASK 0x1 301 #define ITASK_CMD_DATA_XFER_DONE 0x2 302 #define ITASK_CMD_STATUS_DONE 0x3 303 #define ITASK_CMD_ABORT 0x4 304 #define ITASK_CMD_SEND_STATUS 0x5 305 #define ITASK_CMD_POLL 0x10 306 #define ITASK_CMD_POLL_LU (ITASK_CMD_POLL | 1) 307 #define ITASK_CMD_POLL_LPORT (ITASK_CMD_POLL | 2) 308 309 /* 310 * struct maintained on a per itl basis when the lu registers ITL handle. 311 */ 312 typedef struct stmf_itl_data { 313 uint32_t itl_counter; 314 uint8_t itl_flags; 315 uint8_t itl_hdlrm_reason; 316 uint16_t itl_lun; 317 void *itl_handle; 318 struct stmf_i_lu *itl_ilu; 319 struct stmf_i_scsi_session *itl_session; 320 struct stmf_itl_data *itl_next; 321 } stmf_itl_data_t; 322 323 /* 324 * itl flags 325 */ 326 #define STMF_ITL_BEING_TERMINATED 0x01 327 328 /* 329 * data structures to maintain provider private data. 330 */ 331 typedef struct stmf_pp_data { 332 struct stmf_pp_data *ppd_next; 333 void *ppd_provider; 334 nvlist_t *ppd_nv; 335 uint32_t ppd_lu_provider:1, 336 ppd_port_provider:1, 337 ppd_rsvd:30; 338 uint32_t ppd_alloc_size; 339 uint64_t ppd_token; 340 char ppd_name[8]; 341 } stmf_pp_data_t; 342 343 typedef struct stmf_worker { 344 kthread_t *worker_tid; 345 stmf_i_scsi_task_t *worker_task_head; 346 stmf_i_scsi_task_t *worker_task_tail; 347 stmf_i_scsi_task_t *worker_wait_head; 348 stmf_i_scsi_task_t *worker_wait_tail; 349 kmutex_t worker_lock; 350 kcondvar_t worker_cv; 351 uint32_t worker_flags; 352 uint32_t worker_queue_depth; /* ntasks cur queued */ 353 uint32_t worker_max_qdepth_pu; /* maxqd / unit time */ 354 uint32_t worker_max_sys_qdepth_pu; /* for all workers */ 355 uint32_t worker_ref_count; /* # IOs referencing */ 356 hrtime_t worker_signal_timestamp; 357 } stmf_worker_t; 358 359 /* 360 * worker flags 361 */ 362 #define STMF_WORKER_STARTED 1 363 #define STMF_WORKER_ACTIVE 2 364 #define STMF_WORKER_TERMINATE 4 365 366 /* 367 * data struct for managing transfers. 368 */ 369 typedef struct stmf_xfer_data { 370 uint32_t alloc_size; /* Including this struct */ 371 uint32_t size_done; 372 uint32_t size_left; 373 uint8_t buf[4]; 374 } stmf_xfer_data_t; 375 376 /* 377 * Define frequently used macros 378 */ 379 #define TASK_TO_ITASK(x_task) \ 380 ((stmf_i_scsi_task_t *)(x_task)->task_stmf_private) 381 382 void stmf_dlun_init(); 383 stmf_status_t stmf_dlun_fini(); 384 void stmf_worker_init(); 385 stmf_status_t stmf_worker_fini(); 386 void stmf_task_free(scsi_task_t *task); 387 void stmf_do_task_abort(scsi_task_t *task); 388 void stmf_do_itl_dereg(stmf_lu_t *lu, stmf_itl_data_t *itl, 389 uint8_t hdlrm_reason); 390 void stmf_generate_lu_event(stmf_i_lu_t *ilu, int eventid, 391 void *arg, uint32_t flags); 392 void stmf_generate_lport_event(stmf_i_local_port_t *ilport, int eventid, 393 void *arg, uint32_t flags); 394 395 #ifdef __cplusplus 396 } 397 #endif 398 399 #endif /* _STMF_IMPL_H */ 400