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6938 STMF kstat free is using an improper size for kmem_free().
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--- old/usr/src/uts/common/io/comstar/stmf/stmf.c
+++ new/usr/src/uts/common/io/comstar/stmf/stmf.c
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21 /*
22 22 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
23 23 */
24 24 /*
25 25 * Copyright 2012, Nexenta Systems, Inc. All rights reserved.
26 26 * Copyright (c) 2013 by Delphix. All rights reserved.
27 27 * Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
28 28 */
29 29
30 30 #include <sys/conf.h>
31 31 #include <sys/file.h>
32 32 #include <sys/ddi.h>
33 33 #include <sys/sunddi.h>
34 34 #include <sys/modctl.h>
35 35 #include <sys/scsi/scsi.h>
36 36 #include <sys/scsi/generic/persist.h>
37 37 #include <sys/scsi/impl/scsi_reset_notify.h>
38 38 #include <sys/disp.h>
39 39 #include <sys/byteorder.h>
40 40 #include <sys/atomic.h>
41 41 #include <sys/ethernet.h>
42 42 #include <sys/sdt.h>
43 43 #include <sys/nvpair.h>
44 44 #include <sys/zone.h>
45 45 #include <sys/id_space.h>
46 46
47 47 #include <sys/stmf.h>
48 48 #include <sys/lpif.h>
49 49 #include <sys/portif.h>
50 50 #include <sys/stmf_ioctl.h>
51 51 #include <sys/pppt_ic_if.h>
52 52
53 53 #include "stmf_impl.h"
54 54 #include "lun_map.h"
55 55 #include "stmf_state.h"
56 56 #include "stmf_stats.h"
57 57
58 58 /*
59 59 * Lock order:
60 60 * stmf_state_lock --> ilport_lock/iss_lockp --> ilu_task_lock
61 61 */
62 62
63 63 static uint64_t stmf_session_counter = 0;
64 64 static uint16_t stmf_rtpid_counter = 0;
65 65 /* start messages at 1 */
66 66 static uint64_t stmf_proxy_msg_id = 1;
67 67 #define MSG_ID_TM_BIT 0x8000000000000000
68 68 #define ALIGNED_TO_8BYTE_BOUNDARY(i) (((i) + 7) & ~7)
69 69
70 70 /*
71 71 * When stmf_io_deadman_enabled is set to B_TRUE, we check that finishing up
72 72 * I/O operations on an offlining LU doesn't take longer than stmf_io_deadman
73 73 * seconds. If it does, we trigger a panic to inform the user of hung I/O
74 74 * blocking us for too long.
75 75 */
76 76 boolean_t stmf_io_deadman_enabled = B_TRUE;
77 77 int stmf_io_deadman = 1000; /* seconds */
78 78
79 79 struct stmf_svc_clocks;
80 80
81 81 static int stmf_attach(dev_info_t *dip, ddi_attach_cmd_t cmd);
82 82 static int stmf_detach(dev_info_t *dip, ddi_detach_cmd_t cmd);
83 83 static int stmf_getinfo(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg,
84 84 void **result);
85 85 static int stmf_open(dev_t *devp, int flag, int otype, cred_t *credp);
86 86 static int stmf_close(dev_t dev, int flag, int otype, cred_t *credp);
87 87 static int stmf_ioctl(dev_t dev, int cmd, intptr_t data, int mode,
88 88 cred_t *credp, int *rval);
89 89 static int stmf_get_stmf_state(stmf_state_desc_t *std);
90 90 static int stmf_set_stmf_state(stmf_state_desc_t *std);
91 91 static void stmf_abort_task_offline(scsi_task_t *task, int offline_lu,
92 92 char *info);
93 93 static int stmf_set_alua_state(stmf_alua_state_desc_t *alua_state);
94 94 static void stmf_get_alua_state(stmf_alua_state_desc_t *alua_state);
95 95
96 96 static void stmf_task_audit(stmf_i_scsi_task_t *itask,
97 97 task_audit_event_t te, uint32_t cmd_or_iof, stmf_data_buf_t *dbuf);
98 98
99 99 static boolean_t stmf_base16_str_to_binary(char *c, int dplen, uint8_t *dp);
100 100 static char stmf_ctoi(char c);
101 101 stmf_xfer_data_t *stmf_prepare_tpgs_data(uint8_t ilu_alua);
102 102 void stmf_svc_init();
103 103 stmf_status_t stmf_svc_fini();
104 104 void stmf_svc(void *arg);
105 105 static void stmf_wait_ilu_tasks_finish(stmf_i_lu_t *ilu);
106 106 void stmf_svc_queue(int cmd, void *obj, stmf_state_change_info_t *info);
107 107 static void stmf_svc_kill_obj_requests(void *obj);
108 108 static void stmf_svc_timeout(struct stmf_svc_clocks *);
109 109 void stmf_check_freetask();
110 110 void stmf_abort_target_reset(scsi_task_t *task);
111 111 stmf_status_t stmf_lun_reset_poll(stmf_lu_t *lu, struct scsi_task *task,
112 112 int target_reset);
113 113 void stmf_target_reset_poll(struct scsi_task *task);
114 114 void stmf_handle_lun_reset(scsi_task_t *task);
115 115 void stmf_handle_target_reset(scsi_task_t *task);
116 116 void stmf_xd_to_dbuf(stmf_data_buf_t *dbuf, int set_rel_off);
117 117 int stmf_load_ppd_ioctl(stmf_ppioctl_data_t *ppi, uint64_t *ppi_token,
118 118 uint32_t *err_ret);
119 119 int stmf_delete_ppd_ioctl(stmf_ppioctl_data_t *ppi);
120 120 int stmf_get_ppd_ioctl(stmf_ppioctl_data_t *ppi, stmf_ppioctl_data_t *ppi_out,
121 121 uint32_t *err_ret);
122 122 void stmf_delete_ppd(stmf_pp_data_t *ppd);
123 123 void stmf_delete_all_ppds();
124 124 void stmf_trace_clear();
125 125 void stmf_worker_init();
126 126 stmf_status_t stmf_worker_fini();
127 127 void stmf_worker_mgmt();
128 128 void stmf_worker_task(void *arg);
129 129 static void stmf_task_lu_free(scsi_task_t *task, stmf_i_scsi_session_t *iss);
130 130 static stmf_status_t stmf_ic_lu_reg(stmf_ic_reg_dereg_lun_msg_t *msg,
131 131 uint32_t type);
132 132 static stmf_status_t stmf_ic_lu_dereg(stmf_ic_reg_dereg_lun_msg_t *msg);
133 133 static stmf_status_t stmf_ic_rx_scsi_status(stmf_ic_scsi_status_msg_t *msg);
134 134 static stmf_status_t stmf_ic_rx_status(stmf_ic_status_msg_t *msg);
135 135 static stmf_status_t stmf_ic_rx_scsi_data(stmf_ic_scsi_data_msg_t *msg);
136 136 void stmf_task_lu_killall(stmf_lu_t *lu, scsi_task_t *tm_task, stmf_status_t s);
137 137
138 138 /* pppt modhandle */
139 139 ddi_modhandle_t pppt_mod;
140 140
141 141 /* pppt modload imported functions */
142 142 stmf_ic_reg_port_msg_alloc_func_t ic_reg_port_msg_alloc;
143 143 stmf_ic_dereg_port_msg_alloc_func_t ic_dereg_port_msg_alloc;
144 144 stmf_ic_reg_lun_msg_alloc_func_t ic_reg_lun_msg_alloc;
145 145 stmf_ic_dereg_lun_msg_alloc_func_t ic_dereg_lun_msg_alloc;
146 146 stmf_ic_lun_active_msg_alloc_func_t ic_lun_active_msg_alloc;
147 147 stmf_ic_scsi_cmd_msg_alloc_func_t ic_scsi_cmd_msg_alloc;
148 148 stmf_ic_scsi_data_xfer_done_msg_alloc_func_t ic_scsi_data_xfer_done_msg_alloc;
149 149 stmf_ic_session_create_msg_alloc_func_t ic_session_reg_msg_alloc;
150 150 stmf_ic_session_destroy_msg_alloc_func_t ic_session_dereg_msg_alloc;
151 151 stmf_ic_tx_msg_func_t ic_tx_msg;
152 152 stmf_ic_msg_free_func_t ic_msg_free;
153 153
154 154 static void stmf_itl_task_start(stmf_i_scsi_task_t *itask);
155 155 static void stmf_itl_lu_new_task(stmf_i_scsi_task_t *itask);
156 156 static void stmf_itl_task_done(stmf_i_scsi_task_t *itask);
157 157
158 158 static void stmf_lport_xfer_start(stmf_i_scsi_task_t *itask,
159 159 stmf_data_buf_t *dbuf);
160 160 static void stmf_lport_xfer_done(stmf_i_scsi_task_t *itask,
161 161 stmf_data_buf_t *dbuf);
162 162
163 163 static void stmf_update_kstat_lu_q(scsi_task_t *, void());
164 164 static void stmf_update_kstat_lport_q(scsi_task_t *, void());
165 165 static void stmf_update_kstat_lu_io(scsi_task_t *, stmf_data_buf_t *);
166 166 static void stmf_update_kstat_lport_io(scsi_task_t *, stmf_data_buf_t *);
167 167
168 168 static int stmf_irport_compare(const void *void_irport1,
169 169 const void *void_irport2);
170 170 static stmf_i_remote_port_t *stmf_irport_create(scsi_devid_desc_t *rport_devid);
171 171 static void stmf_irport_destroy(stmf_i_remote_port_t *irport);
172 172 static stmf_i_remote_port_t *stmf_irport_register(
173 173 scsi_devid_desc_t *rport_devid);
174 174 static stmf_i_remote_port_t *stmf_irport_lookup_locked(
175 175 scsi_devid_desc_t *rport_devid);
176 176 static void stmf_irport_deregister(stmf_i_remote_port_t *irport);
177 177
178 178 extern struct mod_ops mod_driverops;
179 179
180 180 /* =====[ Tunables ]===== */
181 181 /* Internal tracing */
182 182 volatile int stmf_trace_on = 1;
183 183 volatile int stmf_trace_buf_size = (1 * 1024 * 1024);
184 184 /*
185 185 * The reason default task timeout is 75 is because we want the
186 186 * host to timeout 1st and mostly host timeout is 60 seconds.
187 187 */
188 188 volatile int stmf_default_task_timeout = 75;
189 189 /*
190 190 * Setting this to one means, you are responsible for config load and keeping
191 191 * things in sync with persistent database.
192 192 */
193 193 volatile int stmf_allow_modunload = 0;
194 194
195 195 volatile int stmf_max_nworkers = 256;
196 196 volatile int stmf_min_nworkers = 4;
197 197 volatile int stmf_worker_scale_down_delay = 20;
198 198
199 199 /* === [ Debugging and fault injection ] === */
200 200 #ifdef DEBUG
201 201 volatile uint32_t stmf_drop_task_counter = 0;
202 202 volatile uint32_t stmf_drop_buf_counter = 0;
203 203
204 204 #endif
205 205
206 206 stmf_state_t stmf_state;
207 207 static stmf_lu_t *dlun0;
208 208
209 209 static uint8_t stmf_first_zero[] =
210 210 { 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 0xff };
211 211 static uint8_t stmf_first_one[] =
212 212 { 0xff, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0 };
213 213
214 214 static kmutex_t trace_buf_lock;
215 215 static int trace_buf_size;
216 216 static int trace_buf_curndx;
217 217 caddr_t stmf_trace_buf;
218 218
219 219 static enum {
220 220 STMF_WORKERS_DISABLED = 0,
221 221 STMF_WORKERS_ENABLING,
222 222 STMF_WORKERS_ENABLED
223 223 } stmf_workers_state = STMF_WORKERS_DISABLED;
224 224 static int stmf_i_max_nworkers;
225 225 static int stmf_i_min_nworkers;
226 226 static int stmf_nworkers_cur; /* # of workers currently running */
227 227 static int stmf_nworkers_needed; /* # of workers need to be running */
228 228 static int stmf_worker_sel_counter = 0;
229 229 static uint32_t stmf_cur_ntasks = 0;
230 230 static clock_t stmf_wm_last = 0;
231 231 /*
232 232 * This is equal to stmf_nworkers_cur while we are increasing # workers and
233 233 * stmf_nworkers_needed while we are decreasing the worker count.
234 234 */
235 235 static int stmf_nworkers_accepting_cmds;
236 236 static stmf_worker_t *stmf_workers = NULL;
237 237 static clock_t stmf_worker_mgmt_delay = 2;
238 238 static clock_t stmf_worker_scale_down_timer = 0;
239 239 static int stmf_worker_scale_down_qd = 0;
240 240
241 241 static struct cb_ops stmf_cb_ops = {
242 242 stmf_open, /* open */
243 243 stmf_close, /* close */
244 244 nodev, /* strategy */
245 245 nodev, /* print */
246 246 nodev, /* dump */
247 247 nodev, /* read */
248 248 nodev, /* write */
249 249 stmf_ioctl, /* ioctl */
250 250 nodev, /* devmap */
251 251 nodev, /* mmap */
252 252 nodev, /* segmap */
253 253 nochpoll, /* chpoll */
254 254 ddi_prop_op, /* cb_prop_op */
255 255 0, /* streamtab */
256 256 D_NEW | D_MP, /* cb_flag */
257 257 CB_REV, /* rev */
258 258 nodev, /* aread */
259 259 nodev /* awrite */
260 260 };
261 261
262 262 static struct dev_ops stmf_ops = {
263 263 DEVO_REV,
264 264 0,
265 265 stmf_getinfo,
266 266 nulldev, /* identify */
267 267 nulldev, /* probe */
268 268 stmf_attach,
269 269 stmf_detach,
270 270 nodev, /* reset */
271 271 &stmf_cb_ops,
272 272 NULL, /* bus_ops */
273 273 NULL /* power */
274 274 };
275 275
276 276 #define STMF_NAME "COMSTAR STMF"
277 277 #define STMF_MODULE_NAME "stmf"
278 278
279 279 static struct modldrv modldrv = {
280 280 &mod_driverops,
281 281 STMF_NAME,
282 282 &stmf_ops
283 283 };
284 284
285 285 static struct modlinkage modlinkage = {
286 286 MODREV_1,
287 287 &modldrv,
288 288 NULL
289 289 };
290 290
291 291 int
292 292 _init(void)
293 293 {
294 294 int ret;
295 295
296 296 ret = mod_install(&modlinkage);
297 297 if (ret)
298 298 return (ret);
299 299 stmf_trace_buf = kmem_zalloc(stmf_trace_buf_size, KM_SLEEP);
300 300 trace_buf_size = stmf_trace_buf_size;
301 301 trace_buf_curndx = 0;
302 302 mutex_init(&trace_buf_lock, NULL, MUTEX_DRIVER, 0);
303 303 bzero(&stmf_state, sizeof (stmf_state_t));
304 304 /* STMF service is off by default */
305 305 stmf_state.stmf_service_running = 0;
306 306 /* default lu/lport states are online */
307 307 stmf_state.stmf_default_lu_state = STMF_STATE_ONLINE;
308 308 stmf_state.stmf_default_lport_state = STMF_STATE_ONLINE;
309 309 mutex_init(&stmf_state.stmf_lock, NULL, MUTEX_DRIVER, NULL);
310 310 cv_init(&stmf_state.stmf_cv, NULL, CV_DRIVER, NULL);
311 311 stmf_session_counter = (uint64_t)ddi_get_lbolt();
312 312 avl_create(&stmf_state.stmf_irportlist,
313 313 stmf_irport_compare, sizeof (stmf_i_remote_port_t),
314 314 offsetof(stmf_i_remote_port_t, irport_ln));
315 315 stmf_state.stmf_ilport_inst_space =
316 316 id_space_create("lport-instances", 0, MAX_ILPORT);
317 317 stmf_state.stmf_irport_inst_space =
318 318 id_space_create("rport-instances", 0, MAX_IRPORT);
319 319 stmf_view_init();
320 320 stmf_svc_init();
321 321 stmf_dlun_init();
322 322 return (ret);
323 323 }
324 324
325 325 int
326 326 _fini(void)
327 327 {
328 328 int ret;
329 329 stmf_i_remote_port_t *irport;
330 330 void *avl_dest_cookie = NULL;
331 331
332 332 if (stmf_state.stmf_service_running)
333 333 return (EBUSY);
334 334 if ((!stmf_allow_modunload) &&
335 335 (stmf_state.stmf_config_state != STMF_CONFIG_NONE)) {
336 336 return (EBUSY);
337 337 }
338 338 if (stmf_state.stmf_nlps || stmf_state.stmf_npps) {
339 339 return (EBUSY);
340 340 }
341 341 if (stmf_dlun_fini() != STMF_SUCCESS)
342 342 return (EBUSY);
343 343 if (stmf_worker_fini() != STMF_SUCCESS) {
344 344 stmf_dlun_init();
345 345 return (EBUSY);
346 346 }
347 347 if (stmf_svc_fini() != STMF_SUCCESS) {
348 348 stmf_dlun_init();
349 349 stmf_worker_init();
350 350 return (EBUSY);
351 351 }
352 352
353 353 ret = mod_remove(&modlinkage);
354 354 if (ret) {
355 355 stmf_svc_init();
356 356 stmf_dlun_init();
357 357 stmf_worker_init();
358 358 return (ret);
359 359 }
360 360
361 361 stmf_view_clear_config();
362 362
363 363 while ((irport = avl_destroy_nodes(&stmf_state.stmf_irportlist,
364 364 &avl_dest_cookie)) != NULL)
365 365 stmf_irport_destroy(irport);
366 366 avl_destroy(&stmf_state.stmf_irportlist);
367 367 id_space_destroy(stmf_state.stmf_ilport_inst_space);
368 368 id_space_destroy(stmf_state.stmf_irport_inst_space);
369 369
370 370 kmem_free(stmf_trace_buf, stmf_trace_buf_size);
371 371 mutex_destroy(&trace_buf_lock);
372 372 mutex_destroy(&stmf_state.stmf_lock);
373 373 cv_destroy(&stmf_state.stmf_cv);
374 374 return (ret);
375 375 }
376 376
377 377 int
378 378 _info(struct modinfo *modinfop)
379 379 {
380 380 return (mod_info(&modlinkage, modinfop));
381 381 }
382 382
383 383 /* ARGSUSED */
384 384 static int
385 385 stmf_getinfo(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg, void **result)
386 386 {
387 387 switch (cmd) {
388 388 case DDI_INFO_DEVT2DEVINFO:
389 389 *result = stmf_state.stmf_dip;
390 390 break;
391 391 case DDI_INFO_DEVT2INSTANCE:
392 392 *result =
393 393 (void *)(uintptr_t)ddi_get_instance(stmf_state.stmf_dip);
394 394 break;
395 395 default:
396 396 return (DDI_FAILURE);
397 397 }
398 398
399 399 return (DDI_SUCCESS);
400 400 }
401 401
402 402 static int
403 403 stmf_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
404 404 {
405 405 switch (cmd) {
406 406 case DDI_ATTACH:
407 407 stmf_state.stmf_dip = dip;
408 408
409 409 if (ddi_create_minor_node(dip, "admin", S_IFCHR, 0,
410 410 DDI_NT_STMF, 0) != DDI_SUCCESS) {
411 411 break;
412 412 }
413 413 ddi_report_dev(dip);
414 414 return (DDI_SUCCESS);
415 415 }
416 416
417 417 return (DDI_FAILURE);
418 418 }
419 419
420 420 static int
421 421 stmf_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
422 422 {
423 423 switch (cmd) {
424 424 case DDI_DETACH:
425 425 ddi_remove_minor_node(dip, 0);
426 426 return (DDI_SUCCESS);
427 427 }
428 428
429 429 return (DDI_FAILURE);
430 430 }
431 431
432 432 /* ARGSUSED */
433 433 static int
434 434 stmf_open(dev_t *devp, int flag, int otype, cred_t *credp)
435 435 {
436 436 mutex_enter(&stmf_state.stmf_lock);
437 437 if (stmf_state.stmf_exclusive_open) {
438 438 mutex_exit(&stmf_state.stmf_lock);
439 439 return (EBUSY);
440 440 }
441 441 if (flag & FEXCL) {
442 442 if (stmf_state.stmf_opened) {
443 443 mutex_exit(&stmf_state.stmf_lock);
444 444 return (EBUSY);
445 445 }
446 446 stmf_state.stmf_exclusive_open = 1;
447 447 }
448 448 stmf_state.stmf_opened = 1;
449 449 mutex_exit(&stmf_state.stmf_lock);
450 450 return (0);
451 451 }
452 452
453 453 /* ARGSUSED */
454 454 static int
455 455 stmf_close(dev_t dev, int flag, int otype, cred_t *credp)
456 456 {
457 457 mutex_enter(&stmf_state.stmf_lock);
458 458 stmf_state.stmf_opened = 0;
459 459 if (stmf_state.stmf_exclusive_open &&
460 460 (stmf_state.stmf_config_state != STMF_CONFIG_INIT_DONE)) {
461 461 stmf_state.stmf_config_state = STMF_CONFIG_NONE;
462 462 stmf_delete_all_ppds();
463 463 stmf_view_clear_config();
464 464 stmf_view_init();
465 465 }
466 466 stmf_state.stmf_exclusive_open = 0;
467 467 mutex_exit(&stmf_state.stmf_lock);
468 468 return (0);
469 469 }
470 470
471 471 int
472 472 stmf_copyin_iocdata(intptr_t data, int mode, stmf_iocdata_t **iocd,
473 473 void **ibuf, void **obuf)
474 474 {
475 475 int ret;
476 476
477 477 *ibuf = NULL;
478 478 *obuf = NULL;
479 479 *iocd = kmem_zalloc(sizeof (stmf_iocdata_t), KM_SLEEP);
480 480
481 481 ret = ddi_copyin((void *)data, *iocd, sizeof (stmf_iocdata_t), mode);
482 482 if (ret)
483 483 return (EFAULT);
484 484 if ((*iocd)->stmf_version != STMF_VERSION_1) {
485 485 ret = EINVAL;
486 486 goto copyin_iocdata_done;
487 487 }
488 488 if ((*iocd)->stmf_ibuf_size) {
489 489 *ibuf = kmem_zalloc((*iocd)->stmf_ibuf_size, KM_SLEEP);
490 490 ret = ddi_copyin((void *)((unsigned long)(*iocd)->stmf_ibuf),
491 491 *ibuf, (*iocd)->stmf_ibuf_size, mode);
492 492 }
493 493 if ((*iocd)->stmf_obuf_size)
494 494 *obuf = kmem_zalloc((*iocd)->stmf_obuf_size, KM_SLEEP);
495 495
496 496 if (ret == 0)
497 497 return (0);
498 498 ret = EFAULT;
499 499 copyin_iocdata_done:;
500 500 if (*obuf) {
501 501 kmem_free(*obuf, (*iocd)->stmf_obuf_size);
502 502 *obuf = NULL;
503 503 }
504 504 if (*ibuf) {
505 505 kmem_free(*ibuf, (*iocd)->stmf_ibuf_size);
506 506 *ibuf = NULL;
507 507 }
508 508 kmem_free(*iocd, sizeof (stmf_iocdata_t));
509 509 return (ret);
510 510 }
511 511
512 512 int
513 513 stmf_copyout_iocdata(intptr_t data, int mode, stmf_iocdata_t *iocd, void *obuf)
514 514 {
515 515 int ret;
516 516
517 517 if (iocd->stmf_obuf_size) {
518 518 ret = ddi_copyout(obuf, (void *)(unsigned long)iocd->stmf_obuf,
519 519 iocd->stmf_obuf_size, mode);
520 520 if (ret)
521 521 return (EFAULT);
522 522 }
523 523 ret = ddi_copyout(iocd, (void *)data, sizeof (stmf_iocdata_t), mode);
524 524 if (ret)
525 525 return (EFAULT);
526 526 return (0);
527 527 }
528 528
529 529 /* ARGSUSED */
530 530 static int
531 531 stmf_ioctl(dev_t dev, int cmd, intptr_t data, int mode,
532 532 cred_t *credp, int *rval)
533 533 {
534 534 stmf_iocdata_t *iocd;
535 535 void *ibuf = NULL, *obuf = NULL;
536 536 slist_lu_t *luid_list;
537 537 slist_target_port_t *lportid_list;
538 538 stmf_i_lu_t *ilu;
539 539 stmf_i_local_port_t *ilport;
540 540 stmf_i_scsi_session_t *iss;
541 541 slist_scsi_session_t *iss_list;
542 542 sioc_lu_props_t *lup;
543 543 sioc_target_port_props_t *lportp;
544 544 stmf_ppioctl_data_t *ppi, *ppi_out = NULL;
545 545 uint64_t *ppi_token = NULL;
546 546 uint8_t *p_id, *id;
547 547 stmf_state_desc_t *std;
548 548 stmf_status_t ctl_ret;
549 549 stmf_state_change_info_t ssi;
550 550 int ret = 0;
551 551 uint32_t n;
552 552 int i;
553 553 stmf_group_op_data_t *grp_entry;
554 554 stmf_group_name_t *grpname;
555 555 stmf_view_op_entry_t *ve;
556 556 stmf_id_type_t idtype;
557 557 stmf_id_data_t *id_entry;
558 558 stmf_id_list_t *id_list;
559 559 stmf_view_entry_t *view_entry;
560 560 stmf_set_props_t *stmf_set_props;
561 561 uint32_t veid;
562 562 if ((cmd & 0xff000000) != STMF_IOCTL) {
563 563 return (ENOTTY);
564 564 }
565 565
566 566 if (drv_priv(credp) != 0) {
567 567 return (EPERM);
568 568 }
569 569
570 570 ret = stmf_copyin_iocdata(data, mode, &iocd, &ibuf, &obuf);
571 571 if (ret)
572 572 return (ret);
573 573 iocd->stmf_error = 0;
574 574
575 575 switch (cmd) {
576 576 case STMF_IOCTL_LU_LIST:
577 577 /* retrieves both registered/unregistered */
578 578 mutex_enter(&stmf_state.stmf_lock);
579 579 id_list = &stmf_state.stmf_luid_list;
580 580 n = min(id_list->id_count,
581 581 (iocd->stmf_obuf_size)/sizeof (slist_lu_t));
582 582 iocd->stmf_obuf_max_nentries = id_list->id_count;
583 583 luid_list = (slist_lu_t *)obuf;
584 584 id_entry = id_list->idl_head;
585 585 for (i = 0; i < n; i++) {
586 586 bcopy(id_entry->id_data, luid_list[i].lu_guid, 16);
587 587 id_entry = id_entry->id_next;
588 588 }
589 589
590 590 n = iocd->stmf_obuf_size/sizeof (slist_lu_t);
591 591 for (ilu = stmf_state.stmf_ilulist; ilu; ilu = ilu->ilu_next) {
592 592 id = (uint8_t *)ilu->ilu_lu->lu_id;
593 593 if (stmf_lookup_id(id_list, 16, id + 4) == NULL) {
594 594 iocd->stmf_obuf_max_nentries++;
595 595 if (i < n) {
596 596 bcopy(id + 4, luid_list[i].lu_guid,
597 597 sizeof (slist_lu_t));
598 598 i++;
599 599 }
600 600 }
601 601 }
602 602 iocd->stmf_obuf_nentries = i;
603 603 mutex_exit(&stmf_state.stmf_lock);
604 604 break;
605 605
606 606 case STMF_IOCTL_REG_LU_LIST:
607 607 mutex_enter(&stmf_state.stmf_lock);
608 608 iocd->stmf_obuf_max_nentries = stmf_state.stmf_nlus;
609 609 n = min(stmf_state.stmf_nlus,
610 610 (iocd->stmf_obuf_size)/sizeof (slist_lu_t));
611 611 iocd->stmf_obuf_nentries = n;
612 612 ilu = stmf_state.stmf_ilulist;
613 613 luid_list = (slist_lu_t *)obuf;
614 614 for (i = 0; i < n; i++) {
615 615 uint8_t *id;
616 616 id = (uint8_t *)ilu->ilu_lu->lu_id;
617 617 bcopy(id + 4, luid_list[i].lu_guid, 16);
618 618 ilu = ilu->ilu_next;
619 619 }
620 620 mutex_exit(&stmf_state.stmf_lock);
621 621 break;
622 622
623 623 case STMF_IOCTL_VE_LU_LIST:
624 624 mutex_enter(&stmf_state.stmf_lock);
625 625 id_list = &stmf_state.stmf_luid_list;
626 626 n = min(id_list->id_count,
627 627 (iocd->stmf_obuf_size)/sizeof (slist_lu_t));
628 628 iocd->stmf_obuf_max_nentries = id_list->id_count;
629 629 iocd->stmf_obuf_nentries = n;
630 630 luid_list = (slist_lu_t *)obuf;
631 631 id_entry = id_list->idl_head;
632 632 for (i = 0; i < n; i++) {
633 633 bcopy(id_entry->id_data, luid_list[i].lu_guid, 16);
634 634 id_entry = id_entry->id_next;
635 635 }
636 636 mutex_exit(&stmf_state.stmf_lock);
637 637 break;
638 638
639 639 case STMF_IOCTL_TARGET_PORT_LIST:
640 640 mutex_enter(&stmf_state.stmf_lock);
641 641 iocd->stmf_obuf_max_nentries = stmf_state.stmf_nlports;
642 642 n = min(stmf_state.stmf_nlports,
643 643 (iocd->stmf_obuf_size)/sizeof (slist_target_port_t));
644 644 iocd->stmf_obuf_nentries = n;
645 645 ilport = stmf_state.stmf_ilportlist;
646 646 lportid_list = (slist_target_port_t *)obuf;
647 647 for (i = 0; i < n; i++) {
648 648 uint8_t *id;
649 649 id = (uint8_t *)ilport->ilport_lport->lport_id;
650 650 bcopy(id, lportid_list[i].target, id[3] + 4);
651 651 ilport = ilport->ilport_next;
652 652 }
653 653 mutex_exit(&stmf_state.stmf_lock);
654 654 break;
655 655
656 656 case STMF_IOCTL_SESSION_LIST:
657 657 p_id = (uint8_t *)ibuf;
658 658 if ((p_id == NULL) || (iocd->stmf_ibuf_size < 4) ||
659 659 (iocd->stmf_ibuf_size < (p_id[3] + 4))) {
660 660 ret = EINVAL;
661 661 break;
662 662 }
663 663 mutex_enter(&stmf_state.stmf_lock);
664 664 for (ilport = stmf_state.stmf_ilportlist; ilport; ilport =
665 665 ilport->ilport_next) {
666 666 uint8_t *id;
667 667 id = (uint8_t *)ilport->ilport_lport->lport_id;
668 668 if ((p_id[3] == id[3]) &&
669 669 (bcmp(p_id + 4, id + 4, id[3]) == 0)) {
670 670 break;
671 671 }
672 672 }
673 673 if (ilport == NULL) {
674 674 mutex_exit(&stmf_state.stmf_lock);
675 675 ret = ENOENT;
676 676 break;
677 677 }
678 678 iocd->stmf_obuf_max_nentries = ilport->ilport_nsessions;
679 679 n = min(ilport->ilport_nsessions,
680 680 (iocd->stmf_obuf_size)/sizeof (slist_scsi_session_t));
681 681 iocd->stmf_obuf_nentries = n;
682 682 iss = ilport->ilport_ss_list;
683 683 iss_list = (slist_scsi_session_t *)obuf;
684 684 for (i = 0; i < n; i++) {
685 685 uint8_t *id;
686 686 id = (uint8_t *)iss->iss_ss->ss_rport_id;
687 687 bcopy(id, iss_list[i].initiator, id[3] + 4);
688 688 iss_list[i].creation_time = (uint32_t)
689 689 iss->iss_creation_time;
690 690 if (iss->iss_ss->ss_rport_alias) {
691 691 (void) strncpy(iss_list[i].alias,
692 692 iss->iss_ss->ss_rport_alias, 255);
693 693 iss_list[i].alias[255] = 0;
694 694 } else {
695 695 iss_list[i].alias[0] = 0;
696 696 }
697 697 iss = iss->iss_next;
698 698 }
699 699 mutex_exit(&stmf_state.stmf_lock);
700 700 break;
701 701
702 702 case STMF_IOCTL_GET_LU_PROPERTIES:
703 703 p_id = (uint8_t *)ibuf;
704 704 if ((iocd->stmf_ibuf_size < 16) ||
705 705 (iocd->stmf_obuf_size < sizeof (sioc_lu_props_t)) ||
706 706 (p_id[0] == 0)) {
707 707 ret = EINVAL;
708 708 break;
709 709 }
710 710 mutex_enter(&stmf_state.stmf_lock);
711 711 for (ilu = stmf_state.stmf_ilulist; ilu; ilu = ilu->ilu_next) {
712 712 if (bcmp(p_id, ilu->ilu_lu->lu_id->ident, 16) == 0)
713 713 break;
714 714 }
715 715 if (ilu == NULL) {
716 716 mutex_exit(&stmf_state.stmf_lock);
717 717 ret = ENOENT;
718 718 break;
719 719 }
720 720 lup = (sioc_lu_props_t *)obuf;
721 721 bcopy(ilu->ilu_lu->lu_id->ident, lup->lu_guid, 16);
722 722 lup->lu_state = ilu->ilu_state & 0x0f;
723 723 lup->lu_present = 1; /* XXX */
724 724 (void) strncpy(lup->lu_provider_name,
725 725 ilu->ilu_lu->lu_lp->lp_name, 255);
726 726 lup->lu_provider_name[254] = 0;
727 727 if (ilu->ilu_lu->lu_alias) {
728 728 (void) strncpy(lup->lu_alias,
729 729 ilu->ilu_lu->lu_alias, 255);
730 730 lup->lu_alias[255] = 0;
731 731 } else {
732 732 lup->lu_alias[0] = 0;
733 733 }
734 734 mutex_exit(&stmf_state.stmf_lock);
735 735 break;
736 736
737 737 case STMF_IOCTL_GET_TARGET_PORT_PROPERTIES:
738 738 p_id = (uint8_t *)ibuf;
739 739 if ((p_id == NULL) ||
740 740 (iocd->stmf_ibuf_size < (p_id[3] + 4)) ||
741 741 (iocd->stmf_obuf_size <
742 742 sizeof (sioc_target_port_props_t))) {
743 743 ret = EINVAL;
744 744 break;
745 745 }
746 746 mutex_enter(&stmf_state.stmf_lock);
747 747 for (ilport = stmf_state.stmf_ilportlist; ilport;
748 748 ilport = ilport->ilport_next) {
749 749 uint8_t *id;
750 750 id = (uint8_t *)ilport->ilport_lport->lport_id;
751 751 if ((p_id[3] == id[3]) &&
752 752 (bcmp(p_id+4, id+4, id[3]) == 0))
753 753 break;
754 754 }
755 755 if (ilport == NULL) {
756 756 mutex_exit(&stmf_state.stmf_lock);
757 757 ret = ENOENT;
758 758 break;
759 759 }
760 760 lportp = (sioc_target_port_props_t *)obuf;
761 761 bcopy(ilport->ilport_lport->lport_id, lportp->tgt_id,
762 762 ilport->ilport_lport->lport_id->ident_length + 4);
763 763 lportp->tgt_state = ilport->ilport_state & 0x0f;
764 764 lportp->tgt_present = 1; /* XXX */
765 765 (void) strncpy(lportp->tgt_provider_name,
766 766 ilport->ilport_lport->lport_pp->pp_name, 255);
767 767 lportp->tgt_provider_name[254] = 0;
768 768 if (ilport->ilport_lport->lport_alias) {
769 769 (void) strncpy(lportp->tgt_alias,
770 770 ilport->ilport_lport->lport_alias, 255);
771 771 lportp->tgt_alias[255] = 0;
772 772 } else {
773 773 lportp->tgt_alias[0] = 0;
774 774 }
775 775 mutex_exit(&stmf_state.stmf_lock);
776 776 break;
777 777
778 778 case STMF_IOCTL_SET_STMF_STATE:
779 779 if ((ibuf == NULL) ||
780 780 (iocd->stmf_ibuf_size < sizeof (stmf_state_desc_t))) {
781 781 ret = EINVAL;
782 782 break;
783 783 }
784 784 ret = stmf_set_stmf_state((stmf_state_desc_t *)ibuf);
785 785 break;
786 786
787 787 case STMF_IOCTL_GET_STMF_STATE:
788 788 if ((obuf == NULL) ||
789 789 (iocd->stmf_obuf_size < sizeof (stmf_state_desc_t))) {
790 790 ret = EINVAL;
791 791 break;
792 792 }
793 793 ret = stmf_get_stmf_state((stmf_state_desc_t *)obuf);
794 794 break;
795 795
796 796 case STMF_IOCTL_SET_ALUA_STATE:
797 797 if ((ibuf == NULL) ||
798 798 (iocd->stmf_ibuf_size < sizeof (stmf_alua_state_desc_t))) {
799 799 ret = EINVAL;
800 800 break;
801 801 }
802 802 ret = stmf_set_alua_state((stmf_alua_state_desc_t *)ibuf);
803 803 break;
804 804
805 805 case STMF_IOCTL_GET_ALUA_STATE:
806 806 if ((obuf == NULL) ||
807 807 (iocd->stmf_obuf_size < sizeof (stmf_alua_state_desc_t))) {
808 808 ret = EINVAL;
809 809 break;
810 810 }
811 811 stmf_get_alua_state((stmf_alua_state_desc_t *)obuf);
812 812 break;
813 813
814 814 case STMF_IOCTL_SET_LU_STATE:
815 815 ssi.st_rflags = STMF_RFLAG_USER_REQUEST;
816 816 ssi.st_additional_info = NULL;
817 817 std = (stmf_state_desc_t *)ibuf;
818 818 if ((ibuf == NULL) ||
819 819 (iocd->stmf_ibuf_size < sizeof (stmf_state_desc_t))) {
820 820 ret = EINVAL;
821 821 break;
822 822 }
823 823 p_id = std->ident;
824 824 mutex_enter(&stmf_state.stmf_lock);
825 825 if (stmf_state.stmf_inventory_locked) {
826 826 mutex_exit(&stmf_state.stmf_lock);
827 827 ret = EBUSY;
828 828 break;
829 829 }
830 830 for (ilu = stmf_state.stmf_ilulist; ilu; ilu = ilu->ilu_next) {
831 831 if (bcmp(p_id, ilu->ilu_lu->lu_id->ident, 16) == 0)
832 832 break;
833 833 }
834 834 if (ilu == NULL) {
835 835 mutex_exit(&stmf_state.stmf_lock);
836 836 ret = ENOENT;
837 837 break;
838 838 }
839 839 stmf_state.stmf_inventory_locked = 1;
840 840 mutex_exit(&stmf_state.stmf_lock);
841 841 cmd = (std->state == STMF_STATE_ONLINE) ? STMF_CMD_LU_ONLINE :
842 842 STMF_CMD_LU_OFFLINE;
843 843 ctl_ret = stmf_ctl(cmd, (void *)ilu->ilu_lu, &ssi);
844 844 if (ctl_ret == STMF_ALREADY)
845 845 ret = 0;
846 846 else if (ctl_ret == STMF_BUSY)
847 847 ret = EBUSY;
848 848 else if (ctl_ret != STMF_SUCCESS)
849 849 ret = EIO;
850 850 mutex_enter(&stmf_state.stmf_lock);
851 851 stmf_state.stmf_inventory_locked = 0;
852 852 mutex_exit(&stmf_state.stmf_lock);
853 853 break;
854 854
855 855 case STMF_IOCTL_SET_STMF_PROPS:
856 856 if ((ibuf == NULL) ||
857 857 (iocd->stmf_ibuf_size < sizeof (stmf_set_props_t))) {
858 858 ret = EINVAL;
859 859 break;
860 860 }
861 861 stmf_set_props = (stmf_set_props_t *)ibuf;
862 862 mutex_enter(&stmf_state.stmf_lock);
863 863 if ((stmf_set_props->default_lu_state_value ==
864 864 STMF_STATE_OFFLINE) ||
865 865 (stmf_set_props->default_lu_state_value ==
866 866 STMF_STATE_ONLINE)) {
867 867 stmf_state.stmf_default_lu_state =
868 868 stmf_set_props->default_lu_state_value;
869 869 }
870 870 if ((stmf_set_props->default_target_state_value ==
871 871 STMF_STATE_OFFLINE) ||
872 872 (stmf_set_props->default_target_state_value ==
873 873 STMF_STATE_ONLINE)) {
874 874 stmf_state.stmf_default_lport_state =
875 875 stmf_set_props->default_target_state_value;
876 876 }
877 877
878 878 mutex_exit(&stmf_state.stmf_lock);
879 879 break;
880 880
881 881 case STMF_IOCTL_SET_TARGET_PORT_STATE:
882 882 ssi.st_rflags = STMF_RFLAG_USER_REQUEST;
883 883 ssi.st_additional_info = NULL;
884 884 std = (stmf_state_desc_t *)ibuf;
885 885 if ((ibuf == NULL) ||
886 886 (iocd->stmf_ibuf_size < sizeof (stmf_state_desc_t))) {
887 887 ret = EINVAL;
888 888 break;
889 889 }
890 890 p_id = std->ident;
891 891 mutex_enter(&stmf_state.stmf_lock);
892 892 if (stmf_state.stmf_inventory_locked) {
893 893 mutex_exit(&stmf_state.stmf_lock);
894 894 ret = EBUSY;
895 895 break;
896 896 }
897 897 for (ilport = stmf_state.stmf_ilportlist; ilport;
898 898 ilport = ilport->ilport_next) {
899 899 uint8_t *id;
900 900 id = (uint8_t *)ilport->ilport_lport->lport_id;
901 901 if ((id[3] == p_id[3]) &&
902 902 (bcmp(id+4, p_id+4, id[3]) == 0)) {
903 903 break;
904 904 }
905 905 }
906 906 if (ilport == NULL) {
907 907 mutex_exit(&stmf_state.stmf_lock);
908 908 ret = ENOENT;
909 909 break;
910 910 }
911 911 stmf_state.stmf_inventory_locked = 1;
912 912 mutex_exit(&stmf_state.stmf_lock);
913 913 cmd = (std->state == STMF_STATE_ONLINE) ?
914 914 STMF_CMD_LPORT_ONLINE : STMF_CMD_LPORT_OFFLINE;
915 915 ctl_ret = stmf_ctl(cmd, (void *)ilport->ilport_lport, &ssi);
916 916 if (ctl_ret == STMF_ALREADY)
917 917 ret = 0;
918 918 else if (ctl_ret == STMF_BUSY)
919 919 ret = EBUSY;
920 920 else if (ctl_ret != STMF_SUCCESS)
921 921 ret = EIO;
922 922 mutex_enter(&stmf_state.stmf_lock);
923 923 stmf_state.stmf_inventory_locked = 0;
924 924 mutex_exit(&stmf_state.stmf_lock);
925 925 break;
926 926
927 927 case STMF_IOCTL_ADD_HG_ENTRY:
928 928 idtype = STMF_ID_TYPE_HOST;
929 929 /* FALLTHROUGH */
930 930 case STMF_IOCTL_ADD_TG_ENTRY:
931 931 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) {
932 932 ret = EACCES;
933 933 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT;
934 934 break;
935 935 }
936 936 if (cmd == STMF_IOCTL_ADD_TG_ENTRY) {
937 937 idtype = STMF_ID_TYPE_TARGET;
938 938 }
939 939 grp_entry = (stmf_group_op_data_t *)ibuf;
940 940 if ((ibuf == NULL) ||
941 941 (iocd->stmf_ibuf_size < sizeof (stmf_group_op_data_t))) {
942 942 ret = EINVAL;
943 943 break;
944 944 }
945 945 if (grp_entry->group.name[0] == '*') {
946 946 ret = EINVAL;
947 947 break; /* not allowed */
948 948 }
949 949 mutex_enter(&stmf_state.stmf_lock);
950 950 ret = stmf_add_group_member(grp_entry->group.name,
951 951 grp_entry->group.name_size,
952 952 grp_entry->ident + 4,
953 953 grp_entry->ident[3],
954 954 idtype,
955 955 &iocd->stmf_error);
956 956 mutex_exit(&stmf_state.stmf_lock);
957 957 break;
958 958 case STMF_IOCTL_REMOVE_HG_ENTRY:
959 959 idtype = STMF_ID_TYPE_HOST;
960 960 /* FALLTHROUGH */
961 961 case STMF_IOCTL_REMOVE_TG_ENTRY:
962 962 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) {
963 963 ret = EACCES;
964 964 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT;
965 965 break;
966 966 }
967 967 if (cmd == STMF_IOCTL_REMOVE_TG_ENTRY) {
968 968 idtype = STMF_ID_TYPE_TARGET;
969 969 }
970 970 grp_entry = (stmf_group_op_data_t *)ibuf;
971 971 if ((ibuf == NULL) ||
972 972 (iocd->stmf_ibuf_size < sizeof (stmf_group_op_data_t))) {
973 973 ret = EINVAL;
974 974 break;
975 975 }
976 976 if (grp_entry->group.name[0] == '*') {
977 977 ret = EINVAL;
978 978 break; /* not allowed */
979 979 }
980 980 mutex_enter(&stmf_state.stmf_lock);
981 981 ret = stmf_remove_group_member(grp_entry->group.name,
982 982 grp_entry->group.name_size,
983 983 grp_entry->ident + 4,
984 984 grp_entry->ident[3],
985 985 idtype,
986 986 &iocd->stmf_error);
987 987 mutex_exit(&stmf_state.stmf_lock);
988 988 break;
989 989 case STMF_IOCTL_CREATE_HOST_GROUP:
990 990 idtype = STMF_ID_TYPE_HOST_GROUP;
991 991 /* FALLTHROUGH */
992 992 case STMF_IOCTL_CREATE_TARGET_GROUP:
993 993 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) {
994 994 ret = EACCES;
995 995 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT;
996 996 break;
997 997 }
998 998 grpname = (stmf_group_name_t *)ibuf;
999 999
1000 1000 if (cmd == STMF_IOCTL_CREATE_TARGET_GROUP)
1001 1001 idtype = STMF_ID_TYPE_TARGET_GROUP;
1002 1002 if ((ibuf == NULL) ||
1003 1003 (iocd->stmf_ibuf_size < sizeof (stmf_group_name_t))) {
1004 1004 ret = EINVAL;
1005 1005 break;
1006 1006 }
1007 1007 if (grpname->name[0] == '*') {
1008 1008 ret = EINVAL;
1009 1009 break; /* not allowed */
1010 1010 }
1011 1011 mutex_enter(&stmf_state.stmf_lock);
1012 1012 ret = stmf_add_group(grpname->name,
1013 1013 grpname->name_size, idtype, &iocd->stmf_error);
1014 1014 mutex_exit(&stmf_state.stmf_lock);
1015 1015 break;
1016 1016 case STMF_IOCTL_REMOVE_HOST_GROUP:
1017 1017 idtype = STMF_ID_TYPE_HOST_GROUP;
1018 1018 /* FALLTHROUGH */
1019 1019 case STMF_IOCTL_REMOVE_TARGET_GROUP:
1020 1020 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) {
1021 1021 ret = EACCES;
1022 1022 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT;
1023 1023 break;
1024 1024 }
1025 1025 grpname = (stmf_group_name_t *)ibuf;
1026 1026 if (cmd == STMF_IOCTL_REMOVE_TARGET_GROUP)
1027 1027 idtype = STMF_ID_TYPE_TARGET_GROUP;
1028 1028 if ((ibuf == NULL) ||
1029 1029 (iocd->stmf_ibuf_size < sizeof (stmf_group_name_t))) {
1030 1030 ret = EINVAL;
1031 1031 break;
1032 1032 }
1033 1033 if (grpname->name[0] == '*') {
1034 1034 ret = EINVAL;
1035 1035 break; /* not allowed */
1036 1036 }
1037 1037 mutex_enter(&stmf_state.stmf_lock);
1038 1038 ret = stmf_remove_group(grpname->name,
1039 1039 grpname->name_size, idtype, &iocd->stmf_error);
1040 1040 mutex_exit(&stmf_state.stmf_lock);
1041 1041 break;
1042 1042 case STMF_IOCTL_VALIDATE_VIEW:
1043 1043 case STMF_IOCTL_ADD_VIEW_ENTRY:
1044 1044 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) {
1045 1045 ret = EACCES;
1046 1046 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT;
1047 1047 break;
1048 1048 }
1049 1049 ve = (stmf_view_op_entry_t *)ibuf;
1050 1050 if ((ibuf == NULL) ||
1051 1051 (iocd->stmf_ibuf_size < sizeof (stmf_view_op_entry_t))) {
1052 1052 ret = EINVAL;
1053 1053 break;
1054 1054 }
1055 1055 if (!ve->ve_lu_number_valid)
1056 1056 ve->ve_lu_nbr[2] = 0xFF;
1057 1057 if (ve->ve_all_hosts) {
1058 1058 ve->ve_host_group.name[0] = '*';
1059 1059 ve->ve_host_group.name_size = 1;
1060 1060 }
1061 1061 if (ve->ve_all_targets) {
1062 1062 ve->ve_target_group.name[0] = '*';
1063 1063 ve->ve_target_group.name_size = 1;
1064 1064 }
1065 1065 if (ve->ve_ndx_valid)
1066 1066 veid = ve->ve_ndx;
1067 1067 else
1068 1068 veid = 0xffffffff;
1069 1069 mutex_enter(&stmf_state.stmf_lock);
1070 1070 if (cmd == STMF_IOCTL_ADD_VIEW_ENTRY) {
1071 1071 ret = stmf_add_ve(ve->ve_host_group.name,
1072 1072 ve->ve_host_group.name_size,
1073 1073 ve->ve_target_group.name,
1074 1074 ve->ve_target_group.name_size,
1075 1075 ve->ve_guid,
1076 1076 &veid,
1077 1077 ve->ve_lu_nbr,
1078 1078 &iocd->stmf_error);
1079 1079 } else { /* STMF_IOCTL_VALIDATE_VIEW */
1080 1080 ret = stmf_validate_lun_ve(ve->ve_host_group.name,
1081 1081 ve->ve_host_group.name_size,
1082 1082 ve->ve_target_group.name,
1083 1083 ve->ve_target_group.name_size,
1084 1084 ve->ve_lu_nbr,
1085 1085 &iocd->stmf_error);
1086 1086 }
1087 1087 mutex_exit(&stmf_state.stmf_lock);
1088 1088 if (ret == 0 &&
1089 1089 (!ve->ve_ndx_valid || !ve->ve_lu_number_valid) &&
1090 1090 iocd->stmf_obuf_size >= sizeof (stmf_view_op_entry_t)) {
1091 1091 stmf_view_op_entry_t *ve_ret =
1092 1092 (stmf_view_op_entry_t *)obuf;
1093 1093 iocd->stmf_obuf_nentries = 1;
1094 1094 iocd->stmf_obuf_max_nentries = 1;
1095 1095 if (!ve->ve_ndx_valid) {
1096 1096 ve_ret->ve_ndx = veid;
1097 1097 ve_ret->ve_ndx_valid = 1;
1098 1098 }
1099 1099 if (!ve->ve_lu_number_valid) {
1100 1100 ve_ret->ve_lu_number_valid = 1;
1101 1101 bcopy(ve->ve_lu_nbr, ve_ret->ve_lu_nbr, 8);
1102 1102 }
1103 1103 }
1104 1104 break;
1105 1105 case STMF_IOCTL_REMOVE_VIEW_ENTRY:
1106 1106 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) {
1107 1107 ret = EACCES;
1108 1108 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT;
1109 1109 break;
1110 1110 }
1111 1111 ve = (stmf_view_op_entry_t *)ibuf;
1112 1112 if ((ibuf == NULL) ||
1113 1113 (iocd->stmf_ibuf_size < sizeof (stmf_view_op_entry_t))) {
1114 1114 ret = EINVAL;
1115 1115 break;
1116 1116 }
1117 1117 if (!ve->ve_ndx_valid) {
1118 1118 ret = EINVAL;
1119 1119 break;
1120 1120 }
1121 1121 mutex_enter(&stmf_state.stmf_lock);
1122 1122 ret = stmf_remove_ve_by_id(ve->ve_guid, ve->ve_ndx,
1123 1123 &iocd->stmf_error);
1124 1124 mutex_exit(&stmf_state.stmf_lock);
1125 1125 break;
1126 1126 case STMF_IOCTL_GET_HG_LIST:
1127 1127 id_list = &stmf_state.stmf_hg_list;
1128 1128 /* FALLTHROUGH */
1129 1129 case STMF_IOCTL_GET_TG_LIST:
1130 1130 if (cmd == STMF_IOCTL_GET_TG_LIST)
1131 1131 id_list = &stmf_state.stmf_tg_list;
1132 1132 mutex_enter(&stmf_state.stmf_lock);
1133 1133 iocd->stmf_obuf_max_nentries = id_list->id_count;
1134 1134 n = min(id_list->id_count,
1135 1135 (iocd->stmf_obuf_size)/sizeof (stmf_group_name_t));
1136 1136 iocd->stmf_obuf_nentries = n;
1137 1137 id_entry = id_list->idl_head;
1138 1138 grpname = (stmf_group_name_t *)obuf;
1139 1139 for (i = 0; i < n; i++) {
1140 1140 if (id_entry->id_data[0] == '*') {
1141 1141 if (iocd->stmf_obuf_nentries > 0) {
1142 1142 iocd->stmf_obuf_nentries--;
1143 1143 }
1144 1144 id_entry = id_entry->id_next;
1145 1145 continue;
1146 1146 }
1147 1147 grpname->name_size = id_entry->id_data_size;
1148 1148 bcopy(id_entry->id_data, grpname->name,
1149 1149 id_entry->id_data_size);
1150 1150 grpname++;
1151 1151 id_entry = id_entry->id_next;
1152 1152 }
1153 1153 mutex_exit(&stmf_state.stmf_lock);
1154 1154 break;
1155 1155 case STMF_IOCTL_GET_HG_ENTRIES:
1156 1156 id_list = &stmf_state.stmf_hg_list;
1157 1157 /* FALLTHROUGH */
1158 1158 case STMF_IOCTL_GET_TG_ENTRIES:
1159 1159 grpname = (stmf_group_name_t *)ibuf;
1160 1160 if ((ibuf == NULL) ||
1161 1161 (iocd->stmf_ibuf_size < sizeof (stmf_group_name_t))) {
1162 1162 ret = EINVAL;
1163 1163 break;
1164 1164 }
1165 1165 if (cmd == STMF_IOCTL_GET_TG_ENTRIES) {
1166 1166 id_list = &stmf_state.stmf_tg_list;
1167 1167 }
1168 1168 mutex_enter(&stmf_state.stmf_lock);
1169 1169 id_entry = stmf_lookup_id(id_list, grpname->name_size,
1170 1170 grpname->name);
1171 1171 if (!id_entry)
1172 1172 ret = ENODEV;
1173 1173 else {
1174 1174 stmf_ge_ident_t *grp_entry;
1175 1175 id_list = (stmf_id_list_t *)id_entry->id_impl_specific;
1176 1176 iocd->stmf_obuf_max_nentries = id_list->id_count;
1177 1177 n = min(id_list->id_count,
1178 1178 iocd->stmf_obuf_size/sizeof (stmf_ge_ident_t));
1179 1179 iocd->stmf_obuf_nentries = n;
1180 1180 id_entry = id_list->idl_head;
1181 1181 grp_entry = (stmf_ge_ident_t *)obuf;
1182 1182 for (i = 0; i < n; i++) {
1183 1183 bcopy(id_entry->id_data, grp_entry->ident,
1184 1184 id_entry->id_data_size);
1185 1185 grp_entry->ident_size = id_entry->id_data_size;
1186 1186 id_entry = id_entry->id_next;
1187 1187 grp_entry++;
1188 1188 }
1189 1189 }
1190 1190 mutex_exit(&stmf_state.stmf_lock);
1191 1191 break;
1192 1192
1193 1193 case STMF_IOCTL_GET_VE_LIST:
1194 1194 n = iocd->stmf_obuf_size/sizeof (stmf_view_op_entry_t);
1195 1195 mutex_enter(&stmf_state.stmf_lock);
1196 1196 ve = (stmf_view_op_entry_t *)obuf;
1197 1197 for (id_entry = stmf_state.stmf_luid_list.idl_head;
1198 1198 id_entry; id_entry = id_entry->id_next) {
1199 1199 for (view_entry = (stmf_view_entry_t *)
1200 1200 id_entry->id_impl_specific; view_entry;
1201 1201 view_entry = view_entry->ve_next) {
1202 1202 iocd->stmf_obuf_max_nentries++;
1203 1203 if (iocd->stmf_obuf_nentries >= n)
1204 1204 continue;
1205 1205 ve->ve_ndx_valid = 1;
1206 1206 ve->ve_ndx = view_entry->ve_id;
1207 1207 ve->ve_lu_number_valid = 1;
1208 1208 bcopy(view_entry->ve_lun, ve->ve_lu_nbr, 8);
1209 1209 bcopy(view_entry->ve_luid->id_data, ve->ve_guid,
1210 1210 view_entry->ve_luid->id_data_size);
1211 1211 if (view_entry->ve_hg->id_data[0] == '*') {
1212 1212 ve->ve_all_hosts = 1;
1213 1213 } else {
1214 1214 bcopy(view_entry->ve_hg->id_data,
1215 1215 ve->ve_host_group.name,
1216 1216 view_entry->ve_hg->id_data_size);
1217 1217 ve->ve_host_group.name_size =
1218 1218 view_entry->ve_hg->id_data_size;
1219 1219 }
1220 1220
1221 1221 if (view_entry->ve_tg->id_data[0] == '*') {
1222 1222 ve->ve_all_targets = 1;
1223 1223 } else {
1224 1224 bcopy(view_entry->ve_tg->id_data,
1225 1225 ve->ve_target_group.name,
1226 1226 view_entry->ve_tg->id_data_size);
1227 1227 ve->ve_target_group.name_size =
1228 1228 view_entry->ve_tg->id_data_size;
1229 1229 }
1230 1230 ve++;
1231 1231 iocd->stmf_obuf_nentries++;
1232 1232 }
1233 1233 }
1234 1234 mutex_exit(&stmf_state.stmf_lock);
1235 1235 break;
1236 1236
1237 1237 case STMF_IOCTL_LU_VE_LIST:
1238 1238 p_id = (uint8_t *)ibuf;
1239 1239 if ((iocd->stmf_ibuf_size != 16) ||
1240 1240 (iocd->stmf_obuf_size < sizeof (stmf_view_op_entry_t))) {
1241 1241 ret = EINVAL;
1242 1242 break;
1243 1243 }
1244 1244
1245 1245 n = iocd->stmf_obuf_size/sizeof (stmf_view_op_entry_t);
1246 1246 mutex_enter(&stmf_state.stmf_lock);
1247 1247 ve = (stmf_view_op_entry_t *)obuf;
1248 1248 for (id_entry = stmf_state.stmf_luid_list.idl_head;
1249 1249 id_entry; id_entry = id_entry->id_next) {
1250 1250 if (bcmp(id_entry->id_data, p_id, 16) != 0)
1251 1251 continue;
1252 1252 for (view_entry = (stmf_view_entry_t *)
1253 1253 id_entry->id_impl_specific; view_entry;
1254 1254 view_entry = view_entry->ve_next) {
1255 1255 iocd->stmf_obuf_max_nentries++;
1256 1256 if (iocd->stmf_obuf_nentries >= n)
1257 1257 continue;
1258 1258 ve->ve_ndx_valid = 1;
1259 1259 ve->ve_ndx = view_entry->ve_id;
1260 1260 ve->ve_lu_number_valid = 1;
1261 1261 bcopy(view_entry->ve_lun, ve->ve_lu_nbr, 8);
1262 1262 bcopy(view_entry->ve_luid->id_data, ve->ve_guid,
1263 1263 view_entry->ve_luid->id_data_size);
1264 1264 if (view_entry->ve_hg->id_data[0] == '*') {
1265 1265 ve->ve_all_hosts = 1;
1266 1266 } else {
1267 1267 bcopy(view_entry->ve_hg->id_data,
1268 1268 ve->ve_host_group.name,
1269 1269 view_entry->ve_hg->id_data_size);
1270 1270 ve->ve_host_group.name_size =
1271 1271 view_entry->ve_hg->id_data_size;
1272 1272 }
1273 1273
1274 1274 if (view_entry->ve_tg->id_data[0] == '*') {
1275 1275 ve->ve_all_targets = 1;
1276 1276 } else {
1277 1277 bcopy(view_entry->ve_tg->id_data,
1278 1278 ve->ve_target_group.name,
1279 1279 view_entry->ve_tg->id_data_size);
1280 1280 ve->ve_target_group.name_size =
1281 1281 view_entry->ve_tg->id_data_size;
1282 1282 }
1283 1283 ve++;
1284 1284 iocd->stmf_obuf_nentries++;
1285 1285 }
1286 1286 break;
1287 1287 }
1288 1288 mutex_exit(&stmf_state.stmf_lock);
1289 1289 break;
1290 1290
1291 1291 case STMF_IOCTL_LOAD_PP_DATA:
1292 1292 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) {
1293 1293 ret = EACCES;
1294 1294 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT;
1295 1295 break;
1296 1296 }
1297 1297 ppi = (stmf_ppioctl_data_t *)ibuf;
1298 1298 if ((ppi == NULL) ||
1299 1299 (iocd->stmf_ibuf_size < sizeof (stmf_ppioctl_data_t))) {
1300 1300 ret = EINVAL;
1301 1301 break;
1302 1302 }
1303 1303 /* returned token */
1304 1304 ppi_token = (uint64_t *)obuf;
1305 1305 if ((ppi_token == NULL) ||
1306 1306 (iocd->stmf_obuf_size < sizeof (uint64_t))) {
1307 1307 ret = EINVAL;
1308 1308 break;
1309 1309 }
1310 1310 ret = stmf_load_ppd_ioctl(ppi, ppi_token, &iocd->stmf_error);
1311 1311 break;
1312 1312
1313 1313 case STMF_IOCTL_GET_PP_DATA:
1314 1314 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) {
1315 1315 ret = EACCES;
1316 1316 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT;
1317 1317 break;
1318 1318 }
1319 1319 ppi = (stmf_ppioctl_data_t *)ibuf;
1320 1320 if (ppi == NULL ||
1321 1321 (iocd->stmf_ibuf_size < sizeof (stmf_ppioctl_data_t))) {
1322 1322 ret = EINVAL;
1323 1323 break;
1324 1324 }
1325 1325 ppi_out = (stmf_ppioctl_data_t *)obuf;
1326 1326 if ((ppi_out == NULL) ||
1327 1327 (iocd->stmf_obuf_size < sizeof (stmf_ppioctl_data_t))) {
1328 1328 ret = EINVAL;
1329 1329 break;
1330 1330 }
1331 1331 ret = stmf_get_ppd_ioctl(ppi, ppi_out, &iocd->stmf_error);
1332 1332 break;
1333 1333
1334 1334 case STMF_IOCTL_CLEAR_PP_DATA:
1335 1335 if (stmf_state.stmf_config_state == STMF_CONFIG_NONE) {
1336 1336 ret = EACCES;
1337 1337 iocd->stmf_error = STMF_IOCERR_UPDATE_NEED_CFG_INIT;
1338 1338 break;
1339 1339 }
1340 1340 ppi = (stmf_ppioctl_data_t *)ibuf;
1341 1341 if ((ppi == NULL) ||
1342 1342 (iocd->stmf_ibuf_size < sizeof (stmf_ppioctl_data_t))) {
1343 1343 ret = EINVAL;
1344 1344 break;
1345 1345 }
1346 1346 ret = stmf_delete_ppd_ioctl(ppi);
1347 1347 break;
1348 1348
1349 1349 case STMF_IOCTL_CLEAR_TRACE:
1350 1350 stmf_trace_clear();
1351 1351 break;
1352 1352
1353 1353 case STMF_IOCTL_ADD_TRACE:
1354 1354 if (iocd->stmf_ibuf_size && ibuf) {
1355 1355 ((uint8_t *)ibuf)[iocd->stmf_ibuf_size - 1] = 0;
1356 1356 stmf_trace("\nstradm", "%s\n", ibuf);
1357 1357 }
1358 1358 break;
1359 1359
1360 1360 case STMF_IOCTL_GET_TRACE_POSITION:
1361 1361 if (obuf && (iocd->stmf_obuf_size > 3)) {
1362 1362 mutex_enter(&trace_buf_lock);
1363 1363 *((int *)obuf) = trace_buf_curndx;
1364 1364 mutex_exit(&trace_buf_lock);
1365 1365 } else {
1366 1366 ret = EINVAL;
1367 1367 }
1368 1368 break;
1369 1369
1370 1370 case STMF_IOCTL_GET_TRACE:
1371 1371 if ((iocd->stmf_obuf_size == 0) || (iocd->stmf_ibuf_size < 4)) {
1372 1372 ret = EINVAL;
1373 1373 break;
1374 1374 }
1375 1375 i = *((int *)ibuf);
1376 1376 if ((i > trace_buf_size) || ((i + iocd->stmf_obuf_size) >
1377 1377 trace_buf_size)) {
1378 1378 ret = EINVAL;
1379 1379 break;
1380 1380 }
1381 1381 mutex_enter(&trace_buf_lock);
1382 1382 bcopy(stmf_trace_buf + i, obuf, iocd->stmf_obuf_size);
1383 1383 mutex_exit(&trace_buf_lock);
1384 1384 break;
1385 1385
1386 1386 default:
1387 1387 ret = ENOTTY;
1388 1388 }
1389 1389
1390 1390 if (ret == 0) {
1391 1391 ret = stmf_copyout_iocdata(data, mode, iocd, obuf);
1392 1392 } else if (iocd->stmf_error) {
1393 1393 (void) stmf_copyout_iocdata(data, mode, iocd, obuf);
1394 1394 }
1395 1395 if (obuf) {
1396 1396 kmem_free(obuf, iocd->stmf_obuf_size);
1397 1397 obuf = NULL;
1398 1398 }
1399 1399 if (ibuf) {
1400 1400 kmem_free(ibuf, iocd->stmf_ibuf_size);
1401 1401 ibuf = NULL;
1402 1402 }
1403 1403 kmem_free(iocd, sizeof (stmf_iocdata_t));
1404 1404 return (ret);
1405 1405 }
1406 1406
1407 1407 static int
1408 1408 stmf_get_service_state()
1409 1409 {
1410 1410 stmf_i_local_port_t *ilport;
1411 1411 stmf_i_lu_t *ilu;
1412 1412 int online = 0;
1413 1413 int offline = 0;
1414 1414 int onlining = 0;
1415 1415 int offlining = 0;
1416 1416
1417 1417 ASSERT(mutex_owned(&stmf_state.stmf_lock));
1418 1418 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL;
1419 1419 ilport = ilport->ilport_next) {
1420 1420 if (ilport->ilport_state == STMF_STATE_OFFLINE)
1421 1421 offline++;
1422 1422 else if (ilport->ilport_state == STMF_STATE_ONLINE)
1423 1423 online++;
1424 1424 else if (ilport->ilport_state == STMF_STATE_ONLINING)
1425 1425 onlining++;
1426 1426 else if (ilport->ilport_state == STMF_STATE_OFFLINING)
1427 1427 offlining++;
1428 1428 }
1429 1429
1430 1430 for (ilu = stmf_state.stmf_ilulist; ilu != NULL;
1431 1431 ilu = ilu->ilu_next) {
1432 1432 if (ilu->ilu_state == STMF_STATE_OFFLINE)
1433 1433 offline++;
1434 1434 else if (ilu->ilu_state == STMF_STATE_ONLINE)
1435 1435 online++;
1436 1436 else if (ilu->ilu_state == STMF_STATE_ONLINING)
1437 1437 onlining++;
1438 1438 else if (ilu->ilu_state == STMF_STATE_OFFLINING)
1439 1439 offlining++;
1440 1440 }
1441 1441
1442 1442 if (stmf_state.stmf_service_running) {
1443 1443 if (onlining)
1444 1444 return (STMF_STATE_ONLINING);
1445 1445 else
1446 1446 return (STMF_STATE_ONLINE);
1447 1447 }
1448 1448
1449 1449 if (offlining) {
1450 1450 return (STMF_STATE_OFFLINING);
1451 1451 }
1452 1452
1453 1453 return (STMF_STATE_OFFLINE);
1454 1454 }
1455 1455
1456 1456 static int
1457 1457 stmf_set_stmf_state(stmf_state_desc_t *std)
1458 1458 {
1459 1459 stmf_i_local_port_t *ilport;
1460 1460 stmf_i_lu_t *ilu;
1461 1461 stmf_state_change_info_t ssi;
1462 1462 int svc_state;
1463 1463
1464 1464 ssi.st_rflags = STMF_RFLAG_USER_REQUEST;
1465 1465 ssi.st_additional_info = NULL;
1466 1466
1467 1467 mutex_enter(&stmf_state.stmf_lock);
1468 1468 if (!stmf_state.stmf_exclusive_open) {
1469 1469 mutex_exit(&stmf_state.stmf_lock);
1470 1470 return (EACCES);
1471 1471 }
1472 1472
1473 1473 if (stmf_state.stmf_inventory_locked) {
1474 1474 mutex_exit(&stmf_state.stmf_lock);
1475 1475 return (EBUSY);
1476 1476 }
1477 1477
1478 1478 if ((std->state != STMF_STATE_ONLINE) &&
1479 1479 (std->state != STMF_STATE_OFFLINE)) {
1480 1480 mutex_exit(&stmf_state.stmf_lock);
1481 1481 return (EINVAL);
1482 1482 }
1483 1483
1484 1484 svc_state = stmf_get_service_state();
1485 1485 if ((svc_state == STMF_STATE_OFFLINING) ||
1486 1486 (svc_state == STMF_STATE_ONLINING)) {
1487 1487 mutex_exit(&stmf_state.stmf_lock);
1488 1488 return (EBUSY);
1489 1489 }
1490 1490
1491 1491 if (svc_state == STMF_STATE_OFFLINE) {
1492 1492 if (std->config_state == STMF_CONFIG_INIT) {
1493 1493 if (std->state != STMF_STATE_OFFLINE) {
1494 1494 mutex_exit(&stmf_state.stmf_lock);
1495 1495 return (EINVAL);
1496 1496 }
1497 1497 stmf_state.stmf_config_state = STMF_CONFIG_INIT;
1498 1498 stmf_delete_all_ppds();
1499 1499 stmf_view_clear_config();
1500 1500 stmf_view_init();
1501 1501 mutex_exit(&stmf_state.stmf_lock);
1502 1502 return (0);
1503 1503 }
1504 1504 if ((stmf_state.stmf_config_state == STMF_CONFIG_INIT) ||
1505 1505 (stmf_state.stmf_config_state == STMF_CONFIG_NONE)) {
1506 1506 if (std->config_state != STMF_CONFIG_INIT_DONE) {
1507 1507 mutex_exit(&stmf_state.stmf_lock);
1508 1508 return (EINVAL);
1509 1509 }
1510 1510 stmf_state.stmf_config_state = STMF_CONFIG_INIT_DONE;
1511 1511 }
1512 1512 if (std->state == STMF_STATE_OFFLINE) {
1513 1513 mutex_exit(&stmf_state.stmf_lock);
1514 1514 return (0);
1515 1515 }
1516 1516 if (stmf_state.stmf_config_state == STMF_CONFIG_INIT) {
1517 1517 mutex_exit(&stmf_state.stmf_lock);
1518 1518 return (EINVAL);
1519 1519 }
1520 1520 stmf_state.stmf_inventory_locked = 1;
1521 1521 stmf_state.stmf_service_running = 1;
1522 1522 mutex_exit(&stmf_state.stmf_lock);
1523 1523
1524 1524 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL;
1525 1525 ilport = ilport->ilport_next) {
1526 1526 if (stmf_state.stmf_default_lport_state !=
1527 1527 STMF_STATE_ONLINE)
1528 1528 continue;
1529 1529 (void) stmf_ctl(STMF_CMD_LPORT_ONLINE,
1530 1530 ilport->ilport_lport, &ssi);
1531 1531 }
1532 1532
1533 1533 for (ilu = stmf_state.stmf_ilulist; ilu != NULL;
1534 1534 ilu = ilu->ilu_next) {
1535 1535 if (stmf_state.stmf_default_lu_state !=
1536 1536 STMF_STATE_ONLINE)
1537 1537 continue;
1538 1538 (void) stmf_ctl(STMF_CMD_LU_ONLINE, ilu->ilu_lu, &ssi);
1539 1539 }
1540 1540 mutex_enter(&stmf_state.stmf_lock);
1541 1541 stmf_state.stmf_inventory_locked = 0;
1542 1542 mutex_exit(&stmf_state.stmf_lock);
1543 1543 return (0);
1544 1544 }
1545 1545
1546 1546 /* svc_state is STMF_STATE_ONLINE here */
1547 1547 if ((std->state != STMF_STATE_OFFLINE) ||
1548 1548 (std->config_state == STMF_CONFIG_INIT)) {
1549 1549 mutex_exit(&stmf_state.stmf_lock);
1550 1550 return (EACCES);
1551 1551 }
1552 1552
1553 1553 stmf_state.stmf_inventory_locked = 1;
1554 1554 stmf_state.stmf_service_running = 0;
1555 1555
1556 1556 mutex_exit(&stmf_state.stmf_lock);
1557 1557 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL;
1558 1558 ilport = ilport->ilport_next) {
1559 1559 if (ilport->ilport_state != STMF_STATE_ONLINE)
1560 1560 continue;
1561 1561 (void) stmf_ctl(STMF_CMD_LPORT_OFFLINE,
1562 1562 ilport->ilport_lport, &ssi);
1563 1563 }
1564 1564
1565 1565 for (ilu = stmf_state.stmf_ilulist; ilu != NULL;
1566 1566 ilu = ilu->ilu_next) {
1567 1567 if (ilu->ilu_state != STMF_STATE_ONLINE)
1568 1568 continue;
1569 1569 (void) stmf_ctl(STMF_CMD_LU_OFFLINE, ilu->ilu_lu, &ssi);
1570 1570 }
1571 1571 mutex_enter(&stmf_state.stmf_lock);
1572 1572 stmf_state.stmf_inventory_locked = 0;
1573 1573 mutex_exit(&stmf_state.stmf_lock);
1574 1574 return (0);
1575 1575 }
1576 1576
1577 1577 static int
1578 1578 stmf_get_stmf_state(stmf_state_desc_t *std)
1579 1579 {
1580 1580 mutex_enter(&stmf_state.stmf_lock);
1581 1581 std->state = stmf_get_service_state();
1582 1582 std->config_state = stmf_state.stmf_config_state;
1583 1583 mutex_exit(&stmf_state.stmf_lock);
1584 1584
1585 1585 return (0);
1586 1586 }
1587 1587
1588 1588 /*
1589 1589 * handles registration message from pppt for a logical unit
1590 1590 */
1591 1591 stmf_status_t
1592 1592 stmf_ic_lu_reg(stmf_ic_reg_dereg_lun_msg_t *msg, uint32_t type)
1593 1593 {
1594 1594 stmf_i_lu_provider_t *ilp;
1595 1595 stmf_lu_provider_t *lp;
1596 1596 mutex_enter(&stmf_state.stmf_lock);
1597 1597 for (ilp = stmf_state.stmf_ilplist; ilp != NULL; ilp = ilp->ilp_next) {
1598 1598 if (strcmp(msg->icrl_lu_provider_name,
1599 1599 ilp->ilp_lp->lp_name) == 0) {
1600 1600 lp = ilp->ilp_lp;
1601 1601 mutex_exit(&stmf_state.stmf_lock);
1602 1602 lp->lp_proxy_msg(msg->icrl_lun_id, msg->icrl_cb_arg,
1603 1603 msg->icrl_cb_arg_len, type);
1604 1604 return (STMF_SUCCESS);
1605 1605 }
1606 1606 }
1607 1607 mutex_exit(&stmf_state.stmf_lock);
1608 1608 return (STMF_SUCCESS);
1609 1609 }
1610 1610
1611 1611 /*
1612 1612 * handles de-registration message from pppt for a logical unit
1613 1613 */
1614 1614 stmf_status_t
1615 1615 stmf_ic_lu_dereg(stmf_ic_reg_dereg_lun_msg_t *msg)
1616 1616 {
1617 1617 stmf_i_lu_provider_t *ilp;
1618 1618 stmf_lu_provider_t *lp;
1619 1619 mutex_enter(&stmf_state.stmf_lock);
1620 1620 for (ilp = stmf_state.stmf_ilplist; ilp != NULL; ilp = ilp->ilp_next) {
1621 1621 if (strcmp(msg->icrl_lu_provider_name,
1622 1622 ilp->ilp_lp->lp_name) == 0) {
1623 1623 lp = ilp->ilp_lp;
1624 1624 mutex_exit(&stmf_state.stmf_lock);
1625 1625 lp->lp_proxy_msg(msg->icrl_lun_id, NULL, 0,
1626 1626 STMF_MSG_LU_DEREGISTER);
1627 1627 return (STMF_SUCCESS);
1628 1628 }
1629 1629 }
1630 1630 mutex_exit(&stmf_state.stmf_lock);
1631 1631 return (STMF_SUCCESS);
1632 1632 }
1633 1633
1634 1634 /*
1635 1635 * helper function to find a task that matches a task_msgid
1636 1636 */
1637 1637 scsi_task_t *
1638 1638 find_task_from_msgid(uint8_t *lu_id, stmf_ic_msgid_t task_msgid)
1639 1639 {
1640 1640 stmf_i_lu_t *ilu;
1641 1641 stmf_i_scsi_task_t *itask;
1642 1642
1643 1643 mutex_enter(&stmf_state.stmf_lock);
1644 1644 for (ilu = stmf_state.stmf_ilulist; ilu != NULL; ilu = ilu->ilu_next) {
1645 1645 if (bcmp(lu_id, ilu->ilu_lu->lu_id->ident, 16) == 0) {
1646 1646 break;
1647 1647 }
1648 1648 }
1649 1649
1650 1650 if (ilu == NULL) {
1651 1651 mutex_exit(&stmf_state.stmf_lock);
1652 1652 return (NULL);
1653 1653 }
1654 1654
1655 1655 mutex_enter(&ilu->ilu_task_lock);
1656 1656 for (itask = ilu->ilu_tasks; itask != NULL;
1657 1657 itask = itask->itask_lu_next) {
1658 1658 if (itask->itask_flags & (ITASK_IN_FREE_LIST |
1659 1659 ITASK_BEING_ABORTED)) {
1660 1660 continue;
1661 1661 }
1662 1662 if (itask->itask_proxy_msg_id == task_msgid) {
1663 1663 break;
1664 1664 }
1665 1665 }
1666 1666 mutex_exit(&ilu->ilu_task_lock);
1667 1667 mutex_exit(&stmf_state.stmf_lock);
1668 1668
1669 1669 if (itask != NULL) {
1670 1670 return (itask->itask_task);
1671 1671 } else {
1672 1672 /* task not found. Likely already aborted. */
1673 1673 return (NULL);
1674 1674 }
1675 1675 }
1676 1676
1677 1677 /*
1678 1678 * message received from pppt/ic
1679 1679 */
1680 1680 stmf_status_t
1681 1681 stmf_msg_rx(stmf_ic_msg_t *msg)
1682 1682 {
1683 1683 mutex_enter(&stmf_state.stmf_lock);
1684 1684 if (stmf_state.stmf_alua_state != 1) {
1685 1685 mutex_exit(&stmf_state.stmf_lock);
1686 1686 cmn_err(CE_WARN, "stmf alua state is disabled");
1687 1687 ic_msg_free(msg);
1688 1688 return (STMF_FAILURE);
1689 1689 }
1690 1690 mutex_exit(&stmf_state.stmf_lock);
1691 1691
1692 1692 switch (msg->icm_msg_type) {
1693 1693 case STMF_ICM_REGISTER_LUN:
1694 1694 (void) stmf_ic_lu_reg(
1695 1695 (stmf_ic_reg_dereg_lun_msg_t *)msg->icm_msg,
1696 1696 STMF_MSG_LU_REGISTER);
1697 1697 break;
1698 1698 case STMF_ICM_LUN_ACTIVE:
1699 1699 (void) stmf_ic_lu_reg(
1700 1700 (stmf_ic_reg_dereg_lun_msg_t *)msg->icm_msg,
1701 1701 STMF_MSG_LU_ACTIVE);
1702 1702 break;
1703 1703 case STMF_ICM_DEREGISTER_LUN:
1704 1704 (void) stmf_ic_lu_dereg(
1705 1705 (stmf_ic_reg_dereg_lun_msg_t *)msg->icm_msg);
1706 1706 break;
1707 1707 case STMF_ICM_SCSI_DATA:
1708 1708 (void) stmf_ic_rx_scsi_data(
1709 1709 (stmf_ic_scsi_data_msg_t *)msg->icm_msg);
1710 1710 break;
1711 1711 case STMF_ICM_SCSI_STATUS:
1712 1712 (void) stmf_ic_rx_scsi_status(
1713 1713 (stmf_ic_scsi_status_msg_t *)msg->icm_msg);
1714 1714 break;
1715 1715 case STMF_ICM_STATUS:
1716 1716 (void) stmf_ic_rx_status(
1717 1717 (stmf_ic_status_msg_t *)msg->icm_msg);
1718 1718 break;
1719 1719 default:
1720 1720 cmn_err(CE_WARN, "unknown message received %d",
1721 1721 msg->icm_msg_type);
1722 1722 ic_msg_free(msg);
1723 1723 return (STMF_FAILURE);
1724 1724 }
1725 1725 ic_msg_free(msg);
1726 1726 return (STMF_SUCCESS);
1727 1727 }
1728 1728
1729 1729 stmf_status_t
1730 1730 stmf_ic_rx_status(stmf_ic_status_msg_t *msg)
1731 1731 {
1732 1732 stmf_i_local_port_t *ilport;
1733 1733
1734 1734 if (msg->ics_msg_type != STMF_ICM_REGISTER_PROXY_PORT) {
1735 1735 /* for now, ignore other message status */
1736 1736 return (STMF_SUCCESS);
1737 1737 }
1738 1738
1739 1739 if (msg->ics_status != STMF_SUCCESS) {
1740 1740 return (STMF_SUCCESS);
1741 1741 }
1742 1742
1743 1743 mutex_enter(&stmf_state.stmf_lock);
1744 1744 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL;
1745 1745 ilport = ilport->ilport_next) {
1746 1746 if (msg->ics_msgid == ilport->ilport_reg_msgid) {
1747 1747 ilport->ilport_proxy_registered = 1;
1748 1748 break;
1749 1749 }
1750 1750 }
1751 1751 mutex_exit(&stmf_state.stmf_lock);
1752 1752 return (STMF_SUCCESS);
1753 1753 }
1754 1754
1755 1755 /*
1756 1756 * handles scsi status message from pppt
1757 1757 */
1758 1758 stmf_status_t
1759 1759 stmf_ic_rx_scsi_status(stmf_ic_scsi_status_msg_t *msg)
1760 1760 {
1761 1761 scsi_task_t *task;
1762 1762
1763 1763 /* is this a task management command */
1764 1764 if (msg->icss_task_msgid & MSG_ID_TM_BIT) {
1765 1765 return (STMF_SUCCESS);
1766 1766 }
1767 1767
1768 1768 task = find_task_from_msgid(msg->icss_lun_id, msg->icss_task_msgid);
1769 1769
1770 1770 if (task == NULL) {
1771 1771 return (STMF_SUCCESS);
1772 1772 }
1773 1773
1774 1774 task->task_scsi_status = msg->icss_status;
1775 1775 task->task_sense_data = msg->icss_sense;
1776 1776 task->task_sense_length = msg->icss_sense_len;
1777 1777 (void) stmf_send_scsi_status(task, STMF_IOF_LU_DONE);
1778 1778
1779 1779 return (STMF_SUCCESS);
1780 1780 }
1781 1781
1782 1782 /*
1783 1783 * handles scsi data message from pppt
1784 1784 */
1785 1785 stmf_status_t
1786 1786 stmf_ic_rx_scsi_data(stmf_ic_scsi_data_msg_t *msg)
1787 1787 {
1788 1788 stmf_i_scsi_task_t *itask;
1789 1789 scsi_task_t *task;
1790 1790 stmf_xfer_data_t *xd = NULL;
1791 1791 stmf_data_buf_t *dbuf;
1792 1792 uint32_t sz, minsz, xd_sz, asz;
1793 1793
1794 1794 /* is this a task management command */
1795 1795 if (msg->icsd_task_msgid & MSG_ID_TM_BIT) {
1796 1796 return (STMF_SUCCESS);
1797 1797 }
1798 1798
1799 1799 task = find_task_from_msgid(msg->icsd_lun_id, msg->icsd_task_msgid);
1800 1800 if (task == NULL) {
1801 1801 stmf_ic_msg_t *ic_xfer_done_msg = NULL;
1802 1802 static uint64_t data_msg_id;
1803 1803 stmf_status_t ic_ret = STMF_FAILURE;
1804 1804 mutex_enter(&stmf_state.stmf_lock);
1805 1805 data_msg_id = stmf_proxy_msg_id++;
1806 1806 mutex_exit(&stmf_state.stmf_lock);
1807 1807 /*
1808 1808 * send xfer done status to pppt
1809 1809 * for now, set the session id to 0 as we cannot
1810 1810 * ascertain it since we cannot find the task
1811 1811 */
1812 1812 ic_xfer_done_msg = ic_scsi_data_xfer_done_msg_alloc(
1813 1813 msg->icsd_task_msgid, 0, STMF_FAILURE, data_msg_id);
1814 1814 if (ic_xfer_done_msg) {
1815 1815 ic_ret = ic_tx_msg(ic_xfer_done_msg);
1816 1816 if (ic_ret != STMF_IC_MSG_SUCCESS) {
1817 1817 cmn_err(CE_WARN, "unable to xmit proxy msg");
1818 1818 }
1819 1819 }
1820 1820 return (STMF_FAILURE);
1821 1821 }
1822 1822
1823 1823 itask = (stmf_i_scsi_task_t *)task->task_stmf_private;
1824 1824 dbuf = itask->itask_proxy_dbuf;
1825 1825
1826 1826 task->task_cmd_xfer_length += msg->icsd_data_len;
1827 1827
1828 1828 if (task->task_additional_flags &
1829 1829 TASK_AF_NO_EXPECTED_XFER_LENGTH) {
1830 1830 task->task_expected_xfer_length =
1831 1831 task->task_cmd_xfer_length;
1832 1832 }
1833 1833
1834 1834 sz = min(task->task_expected_xfer_length,
1835 1835 task->task_cmd_xfer_length);
1836 1836
1837 1837 xd_sz = msg->icsd_data_len;
1838 1838 asz = xd_sz + sizeof (*xd) - 4;
1839 1839 xd = (stmf_xfer_data_t *)kmem_zalloc(asz, KM_NOSLEEP);
1840 1840
1841 1841 if (xd == NULL) {
1842 1842 stmf_abort(STMF_QUEUE_TASK_ABORT, task,
1843 1843 STMF_ALLOC_FAILURE, NULL);
1844 1844 return (STMF_FAILURE);
1845 1845 }
1846 1846
1847 1847 xd->alloc_size = asz;
1848 1848 xd->size_left = xd_sz;
1849 1849 bcopy(msg->icsd_data, xd->buf, xd_sz);
1850 1850
1851 1851 sz = min(sz, xd->size_left);
1852 1852 xd->size_left = sz;
1853 1853 minsz = min(512, sz);
1854 1854
1855 1855 if (dbuf == NULL)
1856 1856 dbuf = stmf_alloc_dbuf(task, sz, &minsz, 0);
1857 1857 if (dbuf == NULL) {
1858 1858 kmem_free(xd, xd->alloc_size);
1859 1859 stmf_abort(STMF_QUEUE_TASK_ABORT, task,
1860 1860 STMF_ALLOC_FAILURE, NULL);
1861 1861 return (STMF_FAILURE);
1862 1862 }
1863 1863 dbuf->db_lu_private = xd;
1864 1864 dbuf->db_relative_offset = task->task_nbytes_transferred;
1865 1865 stmf_xd_to_dbuf(dbuf, 0);
1866 1866
1867 1867 dbuf->db_flags = DB_DIRECTION_TO_RPORT;
1868 1868 (void) stmf_xfer_data(task, dbuf, 0);
1869 1869 return (STMF_SUCCESS);
1870 1870 }
1871 1871
1872 1872 stmf_status_t
1873 1873 stmf_proxy_scsi_cmd(scsi_task_t *task, stmf_data_buf_t *dbuf)
1874 1874 {
1875 1875 stmf_i_scsi_task_t *itask =
1876 1876 (stmf_i_scsi_task_t *)task->task_stmf_private;
1877 1877 stmf_i_local_port_t *ilport =
1878 1878 (stmf_i_local_port_t *)task->task_lport->lport_stmf_private;
1879 1879 stmf_ic_msg_t *ic_cmd_msg;
1880 1880 stmf_ic_msg_status_t ic_ret;
1881 1881 stmf_status_t ret = STMF_FAILURE;
1882 1882
1883 1883 if (stmf_state.stmf_alua_state != 1) {
1884 1884 cmn_err(CE_WARN, "stmf alua state is disabled");
1885 1885 return (STMF_FAILURE);
1886 1886 }
1887 1887
1888 1888 if (ilport->ilport_proxy_registered == 0) {
1889 1889 return (STMF_FAILURE);
1890 1890 }
1891 1891
1892 1892 mutex_enter(&stmf_state.stmf_lock);
1893 1893 itask->itask_proxy_msg_id = stmf_proxy_msg_id++;
1894 1894 mutex_exit(&stmf_state.stmf_lock);
1895 1895 itask->itask_proxy_dbuf = dbuf;
1896 1896
1897 1897 /*
1898 1898 * stmf will now take over the task handling for this task
1899 1899 * but it still needs to be treated differently from other
1900 1900 * default handled tasks, hence the ITASK_PROXY_TASK.
1901 1901 * If this is a task management function, we're really just
1902 1902 * duping the command to the peer. Set the TM bit so that
1903 1903 * we can recognize this on return since we won't be completing
1904 1904 * the proxied task in that case.
1905 1905 */
1906 1906 if (task->task_mgmt_function) {
1907 1907 itask->itask_proxy_msg_id |= MSG_ID_TM_BIT;
1908 1908 } else {
1909 1909 uint32_t new, old;
1910 1910 do {
1911 1911 new = old = itask->itask_flags;
1912 1912 if (new & ITASK_BEING_ABORTED)
1913 1913 return (STMF_FAILURE);
1914 1914 new |= ITASK_DEFAULT_HANDLING | ITASK_PROXY_TASK;
1915 1915 } while (atomic_cas_32(&itask->itask_flags, old, new) != old);
1916 1916 }
1917 1917 if (dbuf) {
1918 1918 ic_cmd_msg = ic_scsi_cmd_msg_alloc(itask->itask_proxy_msg_id,
1919 1919 task, dbuf->db_data_size, dbuf->db_sglist[0].seg_addr,
1920 1920 itask->itask_proxy_msg_id);
1921 1921 } else {
1922 1922 ic_cmd_msg = ic_scsi_cmd_msg_alloc(itask->itask_proxy_msg_id,
1923 1923 task, 0, NULL, itask->itask_proxy_msg_id);
1924 1924 }
1925 1925 if (ic_cmd_msg) {
1926 1926 ic_ret = ic_tx_msg(ic_cmd_msg);
1927 1927 if (ic_ret == STMF_IC_MSG_SUCCESS) {
1928 1928 ret = STMF_SUCCESS;
1929 1929 }
1930 1930 }
1931 1931 return (ret);
1932 1932 }
1933 1933
1934 1934
1935 1935 stmf_status_t
1936 1936 pppt_modload()
1937 1937 {
1938 1938 int error;
1939 1939
1940 1940 if (pppt_mod == NULL && ((pppt_mod =
1941 1941 ddi_modopen("drv/pppt", KRTLD_MODE_FIRST, &error)) == NULL)) {
1942 1942 cmn_err(CE_WARN, "Unable to load pppt");
1943 1943 return (STMF_FAILURE);
1944 1944 }
1945 1945
1946 1946 if (ic_reg_port_msg_alloc == NULL && ((ic_reg_port_msg_alloc =
1947 1947 (stmf_ic_reg_port_msg_alloc_func_t)
1948 1948 ddi_modsym(pppt_mod, "stmf_ic_reg_port_msg_alloc",
1949 1949 &error)) == NULL)) {
1950 1950 cmn_err(CE_WARN,
1951 1951 "Unable to find symbol - stmf_ic_reg_port_msg_alloc");
1952 1952 return (STMF_FAILURE);
1953 1953 }
1954 1954
1955 1955
1956 1956 if (ic_dereg_port_msg_alloc == NULL && ((ic_dereg_port_msg_alloc =
1957 1957 (stmf_ic_dereg_port_msg_alloc_func_t)
1958 1958 ddi_modsym(pppt_mod, "stmf_ic_dereg_port_msg_alloc",
1959 1959 &error)) == NULL)) {
1960 1960 cmn_err(CE_WARN,
1961 1961 "Unable to find symbol - stmf_ic_dereg_port_msg_alloc");
1962 1962 return (STMF_FAILURE);
1963 1963 }
1964 1964
1965 1965 if (ic_reg_lun_msg_alloc == NULL && ((ic_reg_lun_msg_alloc =
1966 1966 (stmf_ic_reg_lun_msg_alloc_func_t)
1967 1967 ddi_modsym(pppt_mod, "stmf_ic_reg_lun_msg_alloc",
1968 1968 &error)) == NULL)) {
1969 1969 cmn_err(CE_WARN,
1970 1970 "Unable to find symbol - stmf_ic_reg_lun_msg_alloc");
1971 1971 return (STMF_FAILURE);
1972 1972 }
1973 1973
1974 1974 if (ic_lun_active_msg_alloc == NULL && ((ic_lun_active_msg_alloc =
1975 1975 (stmf_ic_lun_active_msg_alloc_func_t)
1976 1976 ddi_modsym(pppt_mod, "stmf_ic_lun_active_msg_alloc",
1977 1977 &error)) == NULL)) {
1978 1978 cmn_err(CE_WARN,
1979 1979 "Unable to find symbol - stmf_ic_lun_active_msg_alloc");
1980 1980 return (STMF_FAILURE);
1981 1981 }
1982 1982
1983 1983 if (ic_dereg_lun_msg_alloc == NULL && ((ic_dereg_lun_msg_alloc =
1984 1984 (stmf_ic_dereg_lun_msg_alloc_func_t)
1985 1985 ddi_modsym(pppt_mod, "stmf_ic_dereg_lun_msg_alloc",
1986 1986 &error)) == NULL)) {
1987 1987 cmn_err(CE_WARN,
1988 1988 "Unable to find symbol - stmf_ic_dereg_lun_msg_alloc");
1989 1989 return (STMF_FAILURE);
1990 1990 }
1991 1991
1992 1992 if (ic_scsi_cmd_msg_alloc == NULL && ((ic_scsi_cmd_msg_alloc =
1993 1993 (stmf_ic_scsi_cmd_msg_alloc_func_t)
1994 1994 ddi_modsym(pppt_mod, "stmf_ic_scsi_cmd_msg_alloc",
1995 1995 &error)) == NULL)) {
1996 1996 cmn_err(CE_WARN,
1997 1997 "Unable to find symbol - stmf_ic_scsi_cmd_msg_alloc");
1998 1998 return (STMF_FAILURE);
1999 1999 }
2000 2000
2001 2001 if (ic_scsi_data_xfer_done_msg_alloc == NULL &&
2002 2002 ((ic_scsi_data_xfer_done_msg_alloc =
2003 2003 (stmf_ic_scsi_data_xfer_done_msg_alloc_func_t)
2004 2004 ddi_modsym(pppt_mod, "stmf_ic_scsi_data_xfer_done_msg_alloc",
2005 2005 &error)) == NULL)) {
2006 2006 cmn_err(CE_WARN,
2007 2007 "Unable to find symbol -"
2008 2008 "stmf_ic_scsi_data_xfer_done_msg_alloc");
2009 2009 return (STMF_FAILURE);
2010 2010 }
2011 2011
2012 2012 if (ic_session_reg_msg_alloc == NULL &&
2013 2013 ((ic_session_reg_msg_alloc =
2014 2014 (stmf_ic_session_create_msg_alloc_func_t)
2015 2015 ddi_modsym(pppt_mod, "stmf_ic_session_create_msg_alloc",
2016 2016 &error)) == NULL)) {
2017 2017 cmn_err(CE_WARN,
2018 2018 "Unable to find symbol -"
2019 2019 "stmf_ic_session_create_msg_alloc");
2020 2020 return (STMF_FAILURE);
2021 2021 }
2022 2022
2023 2023 if (ic_session_dereg_msg_alloc == NULL &&
2024 2024 ((ic_session_dereg_msg_alloc =
2025 2025 (stmf_ic_session_destroy_msg_alloc_func_t)
2026 2026 ddi_modsym(pppt_mod, "stmf_ic_session_destroy_msg_alloc",
2027 2027 &error)) == NULL)) {
2028 2028 cmn_err(CE_WARN,
2029 2029 "Unable to find symbol -"
2030 2030 "stmf_ic_session_destroy_msg_alloc");
2031 2031 return (STMF_FAILURE);
2032 2032 }
2033 2033
2034 2034 if (ic_tx_msg == NULL && ((ic_tx_msg =
2035 2035 (stmf_ic_tx_msg_func_t)ddi_modsym(pppt_mod, "stmf_ic_tx_msg",
2036 2036 &error)) == NULL)) {
2037 2037 cmn_err(CE_WARN, "Unable to find symbol - stmf_ic_tx_msg");
2038 2038 return (STMF_FAILURE);
2039 2039 }
2040 2040
2041 2041 if (ic_msg_free == NULL && ((ic_msg_free =
2042 2042 (stmf_ic_msg_free_func_t)ddi_modsym(pppt_mod, "stmf_ic_msg_free",
2043 2043 &error)) == NULL)) {
2044 2044 cmn_err(CE_WARN, "Unable to find symbol - stmf_ic_msg_free");
2045 2045 return (STMF_FAILURE);
2046 2046 }
2047 2047 return (STMF_SUCCESS);
2048 2048 }
2049 2049
2050 2050 static void
2051 2051 stmf_get_alua_state(stmf_alua_state_desc_t *alua_state)
2052 2052 {
2053 2053 mutex_enter(&stmf_state.stmf_lock);
2054 2054 alua_state->alua_node = stmf_state.stmf_alua_node;
2055 2055 alua_state->alua_state = stmf_state.stmf_alua_state;
2056 2056 mutex_exit(&stmf_state.stmf_lock);
2057 2057 }
2058 2058
2059 2059
2060 2060 static int
2061 2061 stmf_set_alua_state(stmf_alua_state_desc_t *alua_state)
2062 2062 {
2063 2063 stmf_i_local_port_t *ilport;
2064 2064 stmf_i_lu_t *ilu;
2065 2065 stmf_lu_t *lu;
2066 2066 stmf_ic_msg_status_t ic_ret;
2067 2067 stmf_ic_msg_t *ic_reg_lun, *ic_reg_port;
2068 2068 stmf_local_port_t *lport;
2069 2069 int ret = 0;
2070 2070
2071 2071 if (alua_state->alua_state > 1 || alua_state->alua_node > 1) {
2072 2072 return (EINVAL);
2073 2073 }
2074 2074
2075 2075 mutex_enter(&stmf_state.stmf_lock);
2076 2076 if (alua_state->alua_state == 1) {
2077 2077 if (pppt_modload() == STMF_FAILURE) {
2078 2078 ret = EIO;
2079 2079 goto err;
2080 2080 }
2081 2081 if (alua_state->alua_node != 0) {
2082 2082 /* reset existing rtpids to new base */
2083 2083 stmf_rtpid_counter = 255;
2084 2084 }
2085 2085 stmf_state.stmf_alua_node = alua_state->alua_node;
2086 2086 stmf_state.stmf_alua_state = 1;
2087 2087 /* register existing local ports with ppp */
2088 2088 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL;
2089 2089 ilport = ilport->ilport_next) {
2090 2090 /* skip standby ports and non-alua participants */
2091 2091 if (ilport->ilport_standby == 1 ||
2092 2092 ilport->ilport_alua == 0) {
2093 2093 continue;
2094 2094 }
2095 2095 if (alua_state->alua_node != 0) {
2096 2096 ilport->ilport_rtpid =
2097 2097 atomic_inc_16_nv(&stmf_rtpid_counter);
2098 2098 }
2099 2099 lport = ilport->ilport_lport;
2100 2100 ic_reg_port = ic_reg_port_msg_alloc(
2101 2101 lport->lport_id, ilport->ilport_rtpid,
2102 2102 0, NULL, stmf_proxy_msg_id);
2103 2103 if (ic_reg_port) {
2104 2104 ic_ret = ic_tx_msg(ic_reg_port);
2105 2105 if (ic_ret == STMF_IC_MSG_SUCCESS) {
2106 2106 ilport->ilport_reg_msgid =
2107 2107 stmf_proxy_msg_id++;
2108 2108 } else {
2109 2109 cmn_err(CE_WARN,
2110 2110 "error on port registration "
2111 2111 "port - %s",
2112 2112 ilport->ilport_kstat_tgt_name);
2113 2113 }
2114 2114 }
2115 2115 }
2116 2116 /* register existing logical units */
2117 2117 for (ilu = stmf_state.stmf_ilulist; ilu != NULL;
2118 2118 ilu = ilu->ilu_next) {
2119 2119 if (ilu->ilu_access != STMF_LU_ACTIVE) {
2120 2120 continue;
2121 2121 }
2122 2122 /* register with proxy module */
2123 2123 lu = ilu->ilu_lu;
2124 2124 if (lu->lu_lp && lu->lu_lp->lp_lpif_rev == LPIF_REV_2 &&
2125 2125 lu->lu_lp->lp_alua_support) {
2126 2126 ilu->ilu_alua = 1;
2127 2127 /* allocate the register message */
2128 2128 ic_reg_lun = ic_reg_lun_msg_alloc(
2129 2129 lu->lu_id->ident, lu->lu_lp->lp_name,
2130 2130 lu->lu_proxy_reg_arg_len,
2131 2131 (uint8_t *)lu->lu_proxy_reg_arg,
2132 2132 stmf_proxy_msg_id);
2133 2133 /* send the message */
2134 2134 if (ic_reg_lun) {
2135 2135 ic_ret = ic_tx_msg(ic_reg_lun);
2136 2136 if (ic_ret == STMF_IC_MSG_SUCCESS) {
2137 2137 stmf_proxy_msg_id++;
2138 2138 }
2139 2139 }
2140 2140 }
2141 2141 }
2142 2142 } else {
2143 2143 stmf_state.stmf_alua_state = 0;
2144 2144 }
2145 2145
2146 2146 err:
2147 2147 mutex_exit(&stmf_state.stmf_lock);
2148 2148 return (ret);
2149 2149 }
2150 2150
2151 2151
2152 2152 typedef struct {
2153 2153 void *bp; /* back pointer from internal struct to main struct */
2154 2154 int alloc_size;
2155 2155 } __istmf_t;
2156 2156
2157 2157 typedef struct {
2158 2158 __istmf_t *fp; /* Framework private */
2159 2159 void *cp; /* Caller private */
2160 2160 void *ss; /* struct specific */
2161 2161 } __stmf_t;
2162 2162
2163 2163 static struct {
2164 2164 int shared;
2165 2165 int fw_private;
2166 2166 } stmf_sizes[] = { { 0, 0 },
2167 2167 { GET_STRUCT_SIZE(stmf_lu_provider_t),
2168 2168 GET_STRUCT_SIZE(stmf_i_lu_provider_t) },
2169 2169 { GET_STRUCT_SIZE(stmf_port_provider_t),
2170 2170 GET_STRUCT_SIZE(stmf_i_port_provider_t) },
2171 2171 { GET_STRUCT_SIZE(stmf_local_port_t),
2172 2172 GET_STRUCT_SIZE(stmf_i_local_port_t) },
2173 2173 { GET_STRUCT_SIZE(stmf_lu_t),
2174 2174 GET_STRUCT_SIZE(stmf_i_lu_t) },
2175 2175 { GET_STRUCT_SIZE(stmf_scsi_session_t),
2176 2176 GET_STRUCT_SIZE(stmf_i_scsi_session_t) },
2177 2177 { GET_STRUCT_SIZE(scsi_task_t),
2178 2178 GET_STRUCT_SIZE(stmf_i_scsi_task_t) },
2179 2179 { GET_STRUCT_SIZE(stmf_data_buf_t),
2180 2180 GET_STRUCT_SIZE(__istmf_t) },
2181 2181 { GET_STRUCT_SIZE(stmf_dbuf_store_t),
2182 2182 GET_STRUCT_SIZE(__istmf_t) }
2183 2183
2184 2184 };
2185 2185
2186 2186 void *
2187 2187 stmf_alloc(stmf_struct_id_t struct_id, int additional_size, int flags)
2188 2188 {
2189 2189 int stmf_size;
2190 2190 int kmem_flag;
2191 2191 __stmf_t *sh;
2192 2192
2193 2193 if ((struct_id == 0) || (struct_id >= STMF_MAX_STRUCT_IDS))
2194 2194 return (NULL);
2195 2195
2196 2196 if ((curthread->t_flag & T_INTR_THREAD) || (flags & AF_FORCE_NOSLEEP)) {
2197 2197 kmem_flag = KM_NOSLEEP;
2198 2198 } else {
2199 2199 kmem_flag = KM_SLEEP;
2200 2200 }
2201 2201
2202 2202 additional_size = (additional_size + 7) & (~7);
2203 2203 stmf_size = stmf_sizes[struct_id].shared +
2204 2204 stmf_sizes[struct_id].fw_private + additional_size;
2205 2205
2206 2206 if (flags & AF_DONTZERO)
2207 2207 sh = (__stmf_t *)kmem_alloc(stmf_size, kmem_flag);
2208 2208 else
2209 2209 sh = (__stmf_t *)kmem_zalloc(stmf_size, kmem_flag);
2210 2210
2211 2211 if (sh == NULL)
2212 2212 return (NULL);
2213 2213
2214 2214 /*
2215 2215 * In principle, the implementation inside stmf_alloc should not
2216 2216 * be changed anyway. But the original order of framework private
2217 2217 * data and caller private data does not support sglist in the caller
2218 2218 * private data.
2219 2219 * To work around this, the memory segments of framework private
2220 2220 * data and caller private data are re-ordered here.
2221 2221 * A better solution is to provide a specific interface to allocate
2222 2222 * the sglist, then we will not need this workaround any more.
2223 2223 * But before the new interface is available, the memory segment
2224 2224 * ordering should be kept as is.
2225 2225 */
2226 2226 sh->cp = GET_BYTE_OFFSET(sh, stmf_sizes[struct_id].shared);
2227 2227 sh->fp = (__istmf_t *)GET_BYTE_OFFSET(sh,
2228 2228 stmf_sizes[struct_id].shared + additional_size);
2229 2229
2230 2230 sh->fp->bp = sh;
2231 2231 /* Just store the total size instead of storing additional size */
2232 2232 sh->fp->alloc_size = stmf_size;
2233 2233
2234 2234 return (sh);
2235 2235 }
2236 2236
2237 2237 void
2238 2238 stmf_free(void *ptr)
2239 2239 {
2240 2240 __stmf_t *sh = (__stmf_t *)ptr;
2241 2241
2242 2242 /*
2243 2243 * So far we dont need any struct specific processing. If such
2244 2244 * a need ever arises, then store the struct id in the framework
2245 2245 * private section and get it here as sh->fp->struct_id.
2246 2246 */
2247 2247 kmem_free(ptr, sh->fp->alloc_size);
2248 2248 }
2249 2249
2250 2250 /*
2251 2251 * Given a pointer to stmf_lu_t, verifies if this lu is registered with the
2252 2252 * framework and returns a pointer to framework private data for the lu.
2253 2253 * Returns NULL if the lu was not found.
2254 2254 */
2255 2255 stmf_i_lu_t *
2256 2256 stmf_lookup_lu(stmf_lu_t *lu)
2257 2257 {
2258 2258 stmf_i_lu_t *ilu;
2259 2259 ASSERT(mutex_owned(&stmf_state.stmf_lock));
2260 2260
2261 2261 for (ilu = stmf_state.stmf_ilulist; ilu != NULL; ilu = ilu->ilu_next) {
2262 2262 if (ilu->ilu_lu == lu)
2263 2263 return (ilu);
2264 2264 }
2265 2265 return (NULL);
2266 2266 }
2267 2267
2268 2268 /*
2269 2269 * Given a pointer to stmf_local_port_t, verifies if this lport is registered
2270 2270 * with the framework and returns a pointer to framework private data for
2271 2271 * the lport.
2272 2272 * Returns NULL if the lport was not found.
2273 2273 */
2274 2274 stmf_i_local_port_t *
2275 2275 stmf_lookup_lport(stmf_local_port_t *lport)
2276 2276 {
2277 2277 stmf_i_local_port_t *ilport;
2278 2278 ASSERT(mutex_owned(&stmf_state.stmf_lock));
2279 2279
2280 2280 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL;
2281 2281 ilport = ilport->ilport_next) {
2282 2282 if (ilport->ilport_lport == lport)
2283 2283 return (ilport);
2284 2284 }
2285 2285 return (NULL);
2286 2286 }
2287 2287
2288 2288 stmf_status_t
2289 2289 stmf_register_lu_provider(stmf_lu_provider_t *lp)
2290 2290 {
2291 2291 stmf_i_lu_provider_t *ilp = (stmf_i_lu_provider_t *)lp->lp_stmf_private;
2292 2292 stmf_pp_data_t *ppd;
2293 2293 uint32_t cb_flags;
2294 2294
2295 2295 if (lp->lp_lpif_rev != LPIF_REV_1 && lp->lp_lpif_rev != LPIF_REV_2)
2296 2296 return (STMF_FAILURE);
2297 2297
2298 2298 mutex_enter(&stmf_state.stmf_lock);
2299 2299 ilp->ilp_next = stmf_state.stmf_ilplist;
2300 2300 stmf_state.stmf_ilplist = ilp;
2301 2301 stmf_state.stmf_nlps++;
2302 2302
2303 2303 /* See if we need to do a callback */
2304 2304 for (ppd = stmf_state.stmf_ppdlist; ppd != NULL; ppd = ppd->ppd_next) {
2305 2305 if (strcmp(ppd->ppd_name, lp->lp_name) == 0) {
2306 2306 break;
2307 2307 }
2308 2308 }
2309 2309 if ((ppd == NULL) || (ppd->ppd_nv == NULL)) {
2310 2310 goto rlp_bail_out;
2311 2311 }
2312 2312 ilp->ilp_ppd = ppd;
2313 2313 ppd->ppd_provider = ilp;
2314 2314 if (lp->lp_cb == NULL)
2315 2315 goto rlp_bail_out;
2316 2316 ilp->ilp_cb_in_progress = 1;
2317 2317 cb_flags = STMF_PCB_PREG_COMPLETE;
2318 2318 if (stmf_state.stmf_config_state == STMF_CONFIG_INIT)
2319 2319 cb_flags |= STMF_PCB_STMF_ONLINING;
2320 2320 mutex_exit(&stmf_state.stmf_lock);
2321 2321 lp->lp_cb(lp, STMF_PROVIDER_DATA_UPDATED, ppd->ppd_nv, cb_flags);
2322 2322 mutex_enter(&stmf_state.stmf_lock);
2323 2323 ilp->ilp_cb_in_progress = 0;
2324 2324
2325 2325 rlp_bail_out:
2326 2326 mutex_exit(&stmf_state.stmf_lock);
2327 2327
2328 2328 return (STMF_SUCCESS);
2329 2329 }
2330 2330
2331 2331 stmf_status_t
2332 2332 stmf_deregister_lu_provider(stmf_lu_provider_t *lp)
2333 2333 {
2334 2334 stmf_i_lu_provider_t **ppilp;
2335 2335 stmf_i_lu_provider_t *ilp = (stmf_i_lu_provider_t *)lp->lp_stmf_private;
2336 2336
2337 2337 mutex_enter(&stmf_state.stmf_lock);
2338 2338 if (ilp->ilp_nlus || ilp->ilp_cb_in_progress) {
2339 2339 mutex_exit(&stmf_state.stmf_lock);
2340 2340 return (STMF_BUSY);
2341 2341 }
2342 2342 for (ppilp = &stmf_state.stmf_ilplist; *ppilp != NULL;
2343 2343 ppilp = &((*ppilp)->ilp_next)) {
2344 2344 if (*ppilp == ilp) {
2345 2345 *ppilp = ilp->ilp_next;
2346 2346 stmf_state.stmf_nlps--;
2347 2347 if (ilp->ilp_ppd) {
2348 2348 ilp->ilp_ppd->ppd_provider = NULL;
2349 2349 ilp->ilp_ppd = NULL;
2350 2350 }
2351 2351 mutex_exit(&stmf_state.stmf_lock);
2352 2352 return (STMF_SUCCESS);
2353 2353 }
2354 2354 }
2355 2355 mutex_exit(&stmf_state.stmf_lock);
2356 2356 return (STMF_NOT_FOUND);
2357 2357 }
2358 2358
2359 2359 stmf_status_t
2360 2360 stmf_register_port_provider(stmf_port_provider_t *pp)
2361 2361 {
2362 2362 stmf_i_port_provider_t *ipp =
2363 2363 (stmf_i_port_provider_t *)pp->pp_stmf_private;
2364 2364 stmf_pp_data_t *ppd;
2365 2365 uint32_t cb_flags;
2366 2366
2367 2367 if (pp->pp_portif_rev != PORTIF_REV_1)
2368 2368 return (STMF_FAILURE);
2369 2369
2370 2370 mutex_enter(&stmf_state.stmf_lock);
2371 2371 ipp->ipp_next = stmf_state.stmf_ipplist;
2372 2372 stmf_state.stmf_ipplist = ipp;
2373 2373 stmf_state.stmf_npps++;
2374 2374 /* See if we need to do a callback */
2375 2375 for (ppd = stmf_state.stmf_ppdlist; ppd != NULL; ppd = ppd->ppd_next) {
2376 2376 if (strcmp(ppd->ppd_name, pp->pp_name) == 0) {
2377 2377 break;
2378 2378 }
2379 2379 }
2380 2380 if ((ppd == NULL) || (ppd->ppd_nv == NULL)) {
2381 2381 goto rpp_bail_out;
2382 2382 }
2383 2383 ipp->ipp_ppd = ppd;
2384 2384 ppd->ppd_provider = ipp;
2385 2385 if (pp->pp_cb == NULL)
2386 2386 goto rpp_bail_out;
2387 2387 ipp->ipp_cb_in_progress = 1;
2388 2388 cb_flags = STMF_PCB_PREG_COMPLETE;
2389 2389 if (stmf_state.stmf_config_state == STMF_CONFIG_INIT)
2390 2390 cb_flags |= STMF_PCB_STMF_ONLINING;
2391 2391 mutex_exit(&stmf_state.stmf_lock);
2392 2392 pp->pp_cb(pp, STMF_PROVIDER_DATA_UPDATED, ppd->ppd_nv, cb_flags);
2393 2393 mutex_enter(&stmf_state.stmf_lock);
2394 2394 ipp->ipp_cb_in_progress = 0;
2395 2395
2396 2396 rpp_bail_out:
2397 2397 mutex_exit(&stmf_state.stmf_lock);
2398 2398
2399 2399 return (STMF_SUCCESS);
2400 2400 }
2401 2401
2402 2402 stmf_status_t
2403 2403 stmf_deregister_port_provider(stmf_port_provider_t *pp)
2404 2404 {
2405 2405 stmf_i_port_provider_t *ipp =
2406 2406 (stmf_i_port_provider_t *)pp->pp_stmf_private;
2407 2407 stmf_i_port_provider_t **ppipp;
2408 2408
2409 2409 mutex_enter(&stmf_state.stmf_lock);
2410 2410 if (ipp->ipp_npps || ipp->ipp_cb_in_progress) {
2411 2411 mutex_exit(&stmf_state.stmf_lock);
2412 2412 return (STMF_BUSY);
2413 2413 }
2414 2414 for (ppipp = &stmf_state.stmf_ipplist; *ppipp != NULL;
2415 2415 ppipp = &((*ppipp)->ipp_next)) {
2416 2416 if (*ppipp == ipp) {
2417 2417 *ppipp = ipp->ipp_next;
2418 2418 stmf_state.stmf_npps--;
2419 2419 if (ipp->ipp_ppd) {
2420 2420 ipp->ipp_ppd->ppd_provider = NULL;
2421 2421 ipp->ipp_ppd = NULL;
2422 2422 }
2423 2423 mutex_exit(&stmf_state.stmf_lock);
2424 2424 return (STMF_SUCCESS);
2425 2425 }
2426 2426 }
2427 2427 mutex_exit(&stmf_state.stmf_lock);
2428 2428 return (STMF_NOT_FOUND);
2429 2429 }
2430 2430
2431 2431 int
2432 2432 stmf_load_ppd_ioctl(stmf_ppioctl_data_t *ppi, uint64_t *ppi_token,
2433 2433 uint32_t *err_ret)
2434 2434 {
2435 2435 stmf_i_port_provider_t *ipp;
2436 2436 stmf_i_lu_provider_t *ilp;
2437 2437 stmf_pp_data_t *ppd;
2438 2438 nvlist_t *nv;
2439 2439 int s;
2440 2440 int ret;
2441 2441
2442 2442 *err_ret = 0;
2443 2443
2444 2444 if ((ppi->ppi_lu_provider + ppi->ppi_port_provider) != 1) {
2445 2445 return (EINVAL);
2446 2446 }
2447 2447
2448 2448 mutex_enter(&stmf_state.stmf_lock);
2449 2449 for (ppd = stmf_state.stmf_ppdlist; ppd != NULL; ppd = ppd->ppd_next) {
2450 2450 if (ppi->ppi_lu_provider) {
2451 2451 if (!ppd->ppd_lu_provider)
2452 2452 continue;
2453 2453 } else if (ppi->ppi_port_provider) {
2454 2454 if (!ppd->ppd_port_provider)
2455 2455 continue;
2456 2456 }
2457 2457 if (strncmp(ppi->ppi_name, ppd->ppd_name, 254) == 0)
2458 2458 break;
2459 2459 }
2460 2460
2461 2461 if (ppd == NULL) {
2462 2462 /* New provider */
2463 2463 s = strlen(ppi->ppi_name);
2464 2464 if (s > 254) {
2465 2465 mutex_exit(&stmf_state.stmf_lock);
2466 2466 return (EINVAL);
2467 2467 }
2468 2468 s += sizeof (stmf_pp_data_t) - 7;
2469 2469
2470 2470 ppd = kmem_zalloc(s, KM_NOSLEEP);
2471 2471 if (ppd == NULL) {
2472 2472 mutex_exit(&stmf_state.stmf_lock);
2473 2473 return (ENOMEM);
2474 2474 }
2475 2475 ppd->ppd_alloc_size = s;
2476 2476 (void) strcpy(ppd->ppd_name, ppi->ppi_name);
2477 2477
2478 2478 /* See if this provider already exists */
2479 2479 if (ppi->ppi_lu_provider) {
2480 2480 ppd->ppd_lu_provider = 1;
2481 2481 for (ilp = stmf_state.stmf_ilplist; ilp != NULL;
2482 2482 ilp = ilp->ilp_next) {
2483 2483 if (strcmp(ppi->ppi_name,
2484 2484 ilp->ilp_lp->lp_name) == 0) {
2485 2485 ppd->ppd_provider = ilp;
2486 2486 ilp->ilp_ppd = ppd;
2487 2487 break;
2488 2488 }
2489 2489 }
2490 2490 } else {
2491 2491 ppd->ppd_port_provider = 1;
2492 2492 for (ipp = stmf_state.stmf_ipplist; ipp != NULL;
2493 2493 ipp = ipp->ipp_next) {
2494 2494 if (strcmp(ppi->ppi_name,
2495 2495 ipp->ipp_pp->pp_name) == 0) {
2496 2496 ppd->ppd_provider = ipp;
2497 2497 ipp->ipp_ppd = ppd;
2498 2498 break;
2499 2499 }
2500 2500 }
2501 2501 }
2502 2502
2503 2503 /* Link this ppd in */
2504 2504 ppd->ppd_next = stmf_state.stmf_ppdlist;
2505 2505 stmf_state.stmf_ppdlist = ppd;
2506 2506 }
2507 2507
2508 2508 /*
2509 2509 * User is requesting that the token be checked.
2510 2510 * If there was another set after the user's get
2511 2511 * it's an error
2512 2512 */
2513 2513 if (ppi->ppi_token_valid) {
2514 2514 if (ppi->ppi_token != ppd->ppd_token) {
2515 2515 *err_ret = STMF_IOCERR_PPD_UPDATED;
2516 2516 mutex_exit(&stmf_state.stmf_lock);
2517 2517 return (EINVAL);
2518 2518 }
2519 2519 }
2520 2520
2521 2521 if ((ret = nvlist_unpack((char *)ppi->ppi_data,
2522 2522 (size_t)ppi->ppi_data_size, &nv, KM_NOSLEEP)) != 0) {
2523 2523 mutex_exit(&stmf_state.stmf_lock);
2524 2524 return (ret);
2525 2525 }
2526 2526
2527 2527 /* Free any existing lists and add this one to the ppd */
2528 2528 nvlist_free(ppd->ppd_nv);
2529 2529 ppd->ppd_nv = nv;
2530 2530
2531 2531 /* set the token for writes */
2532 2532 ppd->ppd_token++;
2533 2533 /* return token to caller */
2534 2534 if (ppi_token) {
2535 2535 *ppi_token = ppd->ppd_token;
2536 2536 }
2537 2537
2538 2538 /* If there is a provider registered, do the notifications */
2539 2539 if (ppd->ppd_provider) {
2540 2540 uint32_t cb_flags = 0;
2541 2541
2542 2542 if (stmf_state.stmf_config_state == STMF_CONFIG_INIT)
2543 2543 cb_flags |= STMF_PCB_STMF_ONLINING;
2544 2544 if (ppi->ppi_lu_provider) {
2545 2545 ilp = (stmf_i_lu_provider_t *)ppd->ppd_provider;
2546 2546 if (ilp->ilp_lp->lp_cb == NULL)
2547 2547 goto bail_out;
2548 2548 ilp->ilp_cb_in_progress = 1;
2549 2549 mutex_exit(&stmf_state.stmf_lock);
2550 2550 ilp->ilp_lp->lp_cb(ilp->ilp_lp,
2551 2551 STMF_PROVIDER_DATA_UPDATED, ppd->ppd_nv, cb_flags);
2552 2552 mutex_enter(&stmf_state.stmf_lock);
2553 2553 ilp->ilp_cb_in_progress = 0;
2554 2554 } else {
2555 2555 ipp = (stmf_i_port_provider_t *)ppd->ppd_provider;
2556 2556 if (ipp->ipp_pp->pp_cb == NULL)
2557 2557 goto bail_out;
2558 2558 ipp->ipp_cb_in_progress = 1;
2559 2559 mutex_exit(&stmf_state.stmf_lock);
2560 2560 ipp->ipp_pp->pp_cb(ipp->ipp_pp,
2561 2561 STMF_PROVIDER_DATA_UPDATED, ppd->ppd_nv, cb_flags);
2562 2562 mutex_enter(&stmf_state.stmf_lock);
2563 2563 ipp->ipp_cb_in_progress = 0;
2564 2564 }
2565 2565 }
2566 2566
2567 2567 bail_out:
2568 2568 mutex_exit(&stmf_state.stmf_lock);
2569 2569
2570 2570 return (0);
2571 2571 }
2572 2572
2573 2573 void
2574 2574 stmf_delete_ppd(stmf_pp_data_t *ppd)
2575 2575 {
2576 2576 stmf_pp_data_t **pppd;
2577 2577
2578 2578 ASSERT(mutex_owned(&stmf_state.stmf_lock));
2579 2579 if (ppd->ppd_provider) {
2580 2580 if (ppd->ppd_lu_provider) {
2581 2581 ((stmf_i_lu_provider_t *)
2582 2582 ppd->ppd_provider)->ilp_ppd = NULL;
2583 2583 } else {
2584 2584 ((stmf_i_port_provider_t *)
2585 2585 ppd->ppd_provider)->ipp_ppd = NULL;
2586 2586 }
2587 2587 ppd->ppd_provider = NULL;
2588 2588 }
2589 2589
2590 2590 for (pppd = &stmf_state.stmf_ppdlist; *pppd != NULL;
2591 2591 pppd = &((*pppd)->ppd_next)) {
2592 2592 if (*pppd == ppd)
2593 2593 break;
2594 2594 }
2595 2595
2596 2596 if (*pppd == NULL)
2597 2597 return;
2598 2598
2599 2599 *pppd = ppd->ppd_next;
2600 2600 nvlist_free(ppd->ppd_nv);
2601 2601
2602 2602 kmem_free(ppd, ppd->ppd_alloc_size);
2603 2603 }
2604 2604
2605 2605 int
2606 2606 stmf_delete_ppd_ioctl(stmf_ppioctl_data_t *ppi)
2607 2607 {
2608 2608 stmf_pp_data_t *ppd;
2609 2609 int ret = ENOENT;
2610 2610
2611 2611 if ((ppi->ppi_lu_provider + ppi->ppi_port_provider) != 1) {
2612 2612 return (EINVAL);
2613 2613 }
2614 2614
2615 2615 mutex_enter(&stmf_state.stmf_lock);
2616 2616
2617 2617 for (ppd = stmf_state.stmf_ppdlist; ppd != NULL; ppd = ppd->ppd_next) {
2618 2618 if (ppi->ppi_lu_provider) {
2619 2619 if (!ppd->ppd_lu_provider)
2620 2620 continue;
2621 2621 } else if (ppi->ppi_port_provider) {
2622 2622 if (!ppd->ppd_port_provider)
2623 2623 continue;
2624 2624 }
2625 2625 if (strncmp(ppi->ppi_name, ppd->ppd_name, 254) == 0)
2626 2626 break;
2627 2627 }
2628 2628
2629 2629 if (ppd) {
2630 2630 ret = 0;
2631 2631 stmf_delete_ppd(ppd);
2632 2632 }
2633 2633 mutex_exit(&stmf_state.stmf_lock);
2634 2634
2635 2635 return (ret);
2636 2636 }
2637 2637
2638 2638 int
2639 2639 stmf_get_ppd_ioctl(stmf_ppioctl_data_t *ppi, stmf_ppioctl_data_t *ppi_out,
2640 2640 uint32_t *err_ret)
2641 2641 {
2642 2642 stmf_pp_data_t *ppd;
2643 2643 size_t req_size;
2644 2644 int ret = ENOENT;
2645 2645 char *bufp = (char *)ppi_out->ppi_data;
2646 2646
2647 2647 if ((ppi->ppi_lu_provider + ppi->ppi_port_provider) != 1) {
2648 2648 return (EINVAL);
2649 2649 }
2650 2650
2651 2651 mutex_enter(&stmf_state.stmf_lock);
2652 2652
2653 2653 for (ppd = stmf_state.stmf_ppdlist; ppd != NULL; ppd = ppd->ppd_next) {
2654 2654 if (ppi->ppi_lu_provider) {
2655 2655 if (!ppd->ppd_lu_provider)
2656 2656 continue;
2657 2657 } else if (ppi->ppi_port_provider) {
2658 2658 if (!ppd->ppd_port_provider)
2659 2659 continue;
2660 2660 }
2661 2661 if (strncmp(ppi->ppi_name, ppd->ppd_name, 254) == 0)
2662 2662 break;
2663 2663 }
2664 2664
2665 2665 if (ppd && ppd->ppd_nv) {
2666 2666 ppi_out->ppi_token = ppd->ppd_token;
2667 2667 if ((ret = nvlist_size(ppd->ppd_nv, &req_size,
2668 2668 NV_ENCODE_XDR)) != 0) {
2669 2669 goto done;
2670 2670 }
2671 2671 ppi_out->ppi_data_size = req_size;
2672 2672 if (req_size > ppi->ppi_data_size) {
2673 2673 *err_ret = STMF_IOCERR_INSUFFICIENT_BUF;
2674 2674 ret = EINVAL;
2675 2675 goto done;
2676 2676 }
2677 2677
2678 2678 if ((ret = nvlist_pack(ppd->ppd_nv, &bufp, &req_size,
2679 2679 NV_ENCODE_XDR, 0)) != 0) {
2680 2680 goto done;
2681 2681 }
2682 2682 ret = 0;
2683 2683 }
2684 2684
2685 2685 done:
2686 2686 mutex_exit(&stmf_state.stmf_lock);
2687 2687
2688 2688 return (ret);
2689 2689 }
2690 2690
2691 2691 void
2692 2692 stmf_delete_all_ppds()
2693 2693 {
2694 2694 stmf_pp_data_t *ppd, *nppd;
2695 2695
2696 2696 ASSERT(mutex_owned(&stmf_state.stmf_lock));
2697 2697 for (ppd = stmf_state.stmf_ppdlist; ppd != NULL; ppd = nppd) {
2698 2698 nppd = ppd->ppd_next;
2699 2699 stmf_delete_ppd(ppd);
2700 2700 }
2701 2701 }
2702 2702
2703 2703 /*
2704 2704 * 16 is the max string length of a protocol_ident, increase
2705 2705 * the size if needed.
2706 2706 */
2707 2707 #define STMF_KSTAT_LU_SZ (STMF_GUID_INPUT + 1 + 256)
2708 2708 #define STMF_KSTAT_TGT_SZ (256 * 2 + 16)
2709 2709
2710 2710 /*
2711 2711 * This array matches the Protocol Identifier in stmf_ioctl.h
2712 2712 */
2713 2713 #define MAX_PROTO_STR_LEN 32
2714 2714
2715 2715 char *protocol_ident[PROTOCOL_ANY] = {
2716 2716 "Fibre Channel",
2717 2717 "Parallel SCSI",
2718 2718 "SSA",
2719 2719 "IEEE_1394",
2720 2720 "SRP",
2721 2721 "iSCSI",
2722 2722 "SAS",
2723 2723 "ADT",
2724 2724 "ATAPI",
2725 2725 "UNKNOWN", "UNKNOWN", "UNKNOWN", "UNKNOWN", "UNKNOWN", "UNKNOWN"
2726 2726 };
2727 2727
2728 2728 /*
2729 2729 * Update the lun wait/run queue count
2730 2730 */
2731 2731 static void
2732 2732 stmf_update_kstat_lu_q(scsi_task_t *task, void func())
2733 2733 {
2734 2734 stmf_i_lu_t *ilu;
2735 2735 kstat_io_t *kip;
2736 2736
2737 2737 if (task->task_lu == dlun0)
2738 2738 return;
2739 2739 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private;
2740 2740 if (ilu != NULL && ilu->ilu_kstat_io != NULL) {
2741 2741 kip = KSTAT_IO_PTR(ilu->ilu_kstat_io);
2742 2742 if (kip != NULL) {
2743 2743 func(kip);
2744 2744 }
2745 2745 }
2746 2746 }
2747 2747
2748 2748 /*
2749 2749 * Update the target(lport) wait/run queue count
2750 2750 */
2751 2751 static void
2752 2752 stmf_update_kstat_lport_q(scsi_task_t *task, void func())
2753 2753 {
2754 2754 stmf_i_local_port_t *ilp;
2755 2755 kstat_io_t *kip;
2756 2756
2757 2757 ilp = (stmf_i_local_port_t *)task->task_lport->lport_stmf_private;
2758 2758 if (ilp != NULL && ilp->ilport_kstat_io != NULL) {
2759 2759 kip = KSTAT_IO_PTR(ilp->ilport_kstat_io);
2760 2760 if (kip != NULL) {
2761 2761 mutex_enter(ilp->ilport_kstat_io->ks_lock);
2762 2762 func(kip);
2763 2763 mutex_exit(ilp->ilport_kstat_io->ks_lock);
2764 2764 }
2765 2765 }
2766 2766 }
2767 2767
2768 2768 static void
2769 2769 stmf_update_kstat_lport_io(scsi_task_t *task, stmf_data_buf_t *dbuf)
2770 2770 {
2771 2771 stmf_i_local_port_t *ilp;
2772 2772 kstat_io_t *kip;
2773 2773
2774 2774 ilp = (stmf_i_local_port_t *)task->task_lport->lport_stmf_private;
2775 2775 if (ilp != NULL && ilp->ilport_kstat_io != NULL) {
2776 2776 kip = KSTAT_IO_PTR(ilp->ilport_kstat_io);
2777 2777 if (kip != NULL) {
2778 2778 mutex_enter(ilp->ilport_kstat_io->ks_lock);
2779 2779 STMF_UPDATE_KSTAT_IO(kip, dbuf);
2780 2780 mutex_exit(ilp->ilport_kstat_io->ks_lock);
2781 2781 }
2782 2782 }
2783 2783 }
2784 2784
2785 2785 static void
2786 2786 stmf_update_kstat_lu_io(scsi_task_t *task, stmf_data_buf_t *dbuf)
2787 2787 {
2788 2788 stmf_i_lu_t *ilu;
2789 2789 kstat_io_t *kip;
2790 2790
2791 2791 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private;
2792 2792 if (ilu != NULL && ilu->ilu_kstat_io != NULL) {
2793 2793 kip = KSTAT_IO_PTR(ilu->ilu_kstat_io);
2794 2794 if (kip != NULL) {
2795 2795 mutex_enter(ilu->ilu_kstat_io->ks_lock);
2796 2796 STMF_UPDATE_KSTAT_IO(kip, dbuf);
2797 2797 mutex_exit(ilu->ilu_kstat_io->ks_lock);
2798 2798 }
2799 2799 }
2800 2800 }
2801 2801
2802 2802 static void
2803 2803 stmf_create_kstat_lu(stmf_i_lu_t *ilu)
2804 2804 {
2805 2805 char ks_nm[KSTAT_STRLEN];
2806 2806 stmf_kstat_lu_info_t *ks_lu;
2807 2807
2808 2808 /* create kstat lun info */
2809 2809 ks_lu = (stmf_kstat_lu_info_t *)kmem_zalloc(STMF_KSTAT_LU_SZ,
2810 2810 KM_NOSLEEP);
2811 2811 if (ks_lu == NULL) {
2812 2812 cmn_err(CE_WARN, "STMF: kmem_zalloc failed");
2813 2813 return;
2814 2814 }
2815 2815
2816 2816 bzero(ks_nm, sizeof (ks_nm));
2817 2817 (void) sprintf(ks_nm, "stmf_lu_%"PRIxPTR"", (uintptr_t)ilu);
2818 2818 if ((ilu->ilu_kstat_info = kstat_create(STMF_MODULE_NAME, 0,
2819 2819 ks_nm, "misc", KSTAT_TYPE_NAMED,
2820 2820 sizeof (stmf_kstat_lu_info_t) / sizeof (kstat_named_t),
2821 2821 KSTAT_FLAG_VIRTUAL)) == NULL) {
2822 2822 kmem_free(ks_lu, STMF_KSTAT_LU_SZ);
2823 2823 cmn_err(CE_WARN, "STMF: kstat_create lu failed");
2824 2824 return;
2825 2825 }
2826 2826
2827 2827 ilu->ilu_kstat_info->ks_data_size = STMF_KSTAT_LU_SZ;
2828 2828 ilu->ilu_kstat_info->ks_data = ks_lu;
2829 2829
2830 2830 kstat_named_init(&ks_lu->i_lun_guid, "lun-guid",
2831 2831 KSTAT_DATA_STRING);
2832 2832 kstat_named_init(&ks_lu->i_lun_alias, "lun-alias",
2833 2833 KSTAT_DATA_STRING);
2834 2834
2835 2835 /* convert guid to hex string */
2836 2836 int i;
2837 2837 uint8_t *p = ilu->ilu_lu->lu_id->ident;
2838 2838 bzero(ilu->ilu_ascii_hex_guid, sizeof (ilu->ilu_ascii_hex_guid));
2839 2839 for (i = 0; i < STMF_GUID_INPUT / 2; i++) {
2840 2840 (void) sprintf(&ilu->ilu_ascii_hex_guid[i * 2], "%02x", p[i]);
2841 2841 }
2842 2842 kstat_named_setstr(&ks_lu->i_lun_guid,
2843 2843 (const char *)ilu->ilu_ascii_hex_guid);
2844 2844 kstat_named_setstr(&ks_lu->i_lun_alias,
2845 2845 (const char *)ilu->ilu_lu->lu_alias);
2846 2846 kstat_install(ilu->ilu_kstat_info);
2847 2847
2848 2848 /* create kstat lun io */
2849 2849 bzero(ks_nm, sizeof (ks_nm));
2850 2850 (void) sprintf(ks_nm, "stmf_lu_io_%"PRIxPTR"", (uintptr_t)ilu);
2851 2851 if ((ilu->ilu_kstat_io = kstat_create(STMF_MODULE_NAME, 0,
2852 2852 ks_nm, "io", KSTAT_TYPE_IO, 1, 0)) == NULL) {
2853 2853 cmn_err(CE_WARN, "STMF: kstat_create lu_io failed");
2854 2854 return;
2855 2855 }
2856 2856 mutex_init(&ilu->ilu_kstat_lock, NULL, MUTEX_DRIVER, 0);
2857 2857 ilu->ilu_kstat_io->ks_lock = &ilu->ilu_kstat_lock;
2858 2858 kstat_install(ilu->ilu_kstat_io);
2859 2859 }
2860 2860
2861 2861 static void
2862 2862 stmf_create_kstat_lport(stmf_i_local_port_t *ilport)
2863 2863 {
2864 2864 char ks_nm[KSTAT_STRLEN];
2865 2865 stmf_kstat_tgt_info_t *ks_tgt;
2866 2866 int id, len;
2867 2867
2868 2868 /* create kstat lport info */
2869 2869 ks_tgt = (stmf_kstat_tgt_info_t *)kmem_zalloc(STMF_KSTAT_TGT_SZ,
2870 2870 KM_NOSLEEP);
2871 2871 if (ks_tgt == NULL) {
2872 2872 cmn_err(CE_WARN, "STMF: kmem_zalloc failed");
2873 2873 return;
2874 2874 }
2875 2875
2876 2876 bzero(ks_nm, sizeof (ks_nm));
2877 2877 (void) sprintf(ks_nm, "stmf_tgt_%"PRIxPTR"", (uintptr_t)ilport);
2878 2878 if ((ilport->ilport_kstat_info = kstat_create(STMF_MODULE_NAME,
2879 2879 0, ks_nm, "misc", KSTAT_TYPE_NAMED,
2880 2880 sizeof (stmf_kstat_tgt_info_t) / sizeof (kstat_named_t),
2881 2881 KSTAT_FLAG_VIRTUAL)) == NULL) {
2882 2882 kmem_free(ks_tgt, STMF_KSTAT_TGT_SZ);
2883 2883 cmn_err(CE_WARN, "STMF: kstat_create target failed");
2884 2884 return;
2885 2885 }
2886 2886
2887 2887 ilport->ilport_kstat_info->ks_data_size = STMF_KSTAT_TGT_SZ;
2888 2888 ilport->ilport_kstat_info->ks_data = ks_tgt;
2889 2889
2890 2890 kstat_named_init(&ks_tgt->i_tgt_name, "target-name",
2891 2891 KSTAT_DATA_STRING);
2892 2892 kstat_named_init(&ks_tgt->i_tgt_alias, "target-alias",
2893 2893 KSTAT_DATA_STRING);
2894 2894 kstat_named_init(&ks_tgt->i_protocol, "protocol",
2895 2895 KSTAT_DATA_STRING);
2896 2896
2897 2897 /* ident might not be null terminated */
2898 2898 len = ilport->ilport_lport->lport_id->ident_length;
2899 2899 bcopy(ilport->ilport_lport->lport_id->ident,
2900 2900 ilport->ilport_kstat_tgt_name, len);
2901 2901 ilport->ilport_kstat_tgt_name[len + 1] = NULL;
2902 2902 kstat_named_setstr(&ks_tgt->i_tgt_name,
2903 2903 (const char *)ilport->ilport_kstat_tgt_name);
2904 2904 kstat_named_setstr(&ks_tgt->i_tgt_alias,
2905 2905 (const char *)ilport->ilport_lport->lport_alias);
2906 2906 /* protocol */
2907 2907 if ((id = ilport->ilport_lport->lport_id->protocol_id) > PROTOCOL_ANY) {
2908 2908 cmn_err(CE_WARN, "STMF: protocol_id out of bound");
2909 2909 id = PROTOCOL_ANY;
2910 2910 }
2911 2911 kstat_named_setstr(&ks_tgt->i_protocol, protocol_ident[id]);
2912 2912 kstat_install(ilport->ilport_kstat_info);
2913 2913
2914 2914 /* create kstat lport io */
2915 2915 bzero(ks_nm, sizeof (ks_nm));
2916 2916 (void) sprintf(ks_nm, "stmf_tgt_io_%"PRIxPTR"", (uintptr_t)ilport);
2917 2917 if ((ilport->ilport_kstat_io = kstat_create(STMF_MODULE_NAME, 0,
2918 2918 ks_nm, "io", KSTAT_TYPE_IO, 1, 0)) == NULL) {
2919 2919 cmn_err(CE_WARN, "STMF: kstat_create target_io failed");
2920 2920 return;
2921 2921 }
2922 2922 mutex_init(&ilport->ilport_kstat_lock, NULL, MUTEX_DRIVER, 0);
2923 2923 ilport->ilport_kstat_io->ks_lock = &ilport->ilport_kstat_lock;
2924 2924 kstat_install(ilport->ilport_kstat_io);
2925 2925 }
2926 2926
2927 2927 /*
2928 2928 * set the asymmetric access state for a logical unit
2929 2929 * caller is responsible for establishing SCSI unit attention on
2930 2930 * state change
2931 2931 */
2932 2932 stmf_status_t
2933 2933 stmf_set_lu_access(stmf_lu_t *lu, uint8_t access_state)
2934 2934 {
2935 2935 stmf_i_lu_t *ilu;
2936 2936 uint8_t *p1, *p2;
2937 2937
2938 2938 if ((access_state != STMF_LU_STANDBY) &&
2939 2939 (access_state != STMF_LU_ACTIVE)) {
2940 2940 return (STMF_INVALID_ARG);
2941 2941 }
2942 2942
2943 2943 p1 = &lu->lu_id->ident[0];
2944 2944 mutex_enter(&stmf_state.stmf_lock);
2945 2945 if (stmf_state.stmf_inventory_locked) {
2946 2946 mutex_exit(&stmf_state.stmf_lock);
2947 2947 return (STMF_BUSY);
2948 2948 }
2949 2949
2950 2950 for (ilu = stmf_state.stmf_ilulist; ilu != NULL; ilu = ilu->ilu_next) {
2951 2951 p2 = &ilu->ilu_lu->lu_id->ident[0];
2952 2952 if (bcmp(p1, p2, 16) == 0) {
2953 2953 break;
2954 2954 }
2955 2955 }
2956 2956
2957 2957 if (!ilu) {
2958 2958 ilu = (stmf_i_lu_t *)lu->lu_stmf_private;
2959 2959 } else {
2960 2960 /*
2961 2961 * We're changing access state on an existing logical unit
2962 2962 * Send the proxy registration message for this logical unit
2963 2963 * if we're in alua mode.
2964 2964 * If the requested state is STMF_LU_ACTIVE, we want to register
2965 2965 * this logical unit.
2966 2966 * If the requested state is STMF_LU_STANDBY, we're going to
2967 2967 * abort all tasks for this logical unit.
2968 2968 */
2969 2969 if (stmf_state.stmf_alua_state == 1 &&
2970 2970 access_state == STMF_LU_ACTIVE) {
2971 2971 stmf_ic_msg_status_t ic_ret = STMF_IC_MSG_SUCCESS;
2972 2972 stmf_ic_msg_t *ic_reg_lun;
2973 2973 if (lu->lu_lp && lu->lu_lp->lp_lpif_rev == LPIF_REV_2 &&
2974 2974 lu->lu_lp->lp_alua_support) {
2975 2975 ilu->ilu_alua = 1;
2976 2976 /* allocate the register message */
2977 2977 ic_reg_lun = ic_lun_active_msg_alloc(p1,
2978 2978 lu->lu_lp->lp_name,
2979 2979 lu->lu_proxy_reg_arg_len,
2980 2980 (uint8_t *)lu->lu_proxy_reg_arg,
2981 2981 stmf_proxy_msg_id);
2982 2982 /* send the message */
2983 2983 if (ic_reg_lun) {
2984 2984 ic_ret = ic_tx_msg(ic_reg_lun);
2985 2985 if (ic_ret == STMF_IC_MSG_SUCCESS) {
2986 2986 stmf_proxy_msg_id++;
2987 2987 }
2988 2988 }
2989 2989 }
2990 2990 } else if (stmf_state.stmf_alua_state == 1 &&
2991 2991 access_state == STMF_LU_STANDBY) {
2992 2992 /* abort all tasks for this lu */
2993 2993 stmf_task_lu_killall(lu, NULL, STMF_ABORTED);
2994 2994 }
2995 2995 }
2996 2996
2997 2997 ilu->ilu_access = access_state;
2998 2998
2999 2999 mutex_exit(&stmf_state.stmf_lock);
3000 3000 return (STMF_SUCCESS);
3001 3001 }
3002 3002
3003 3003
3004 3004 stmf_status_t
3005 3005 stmf_register_lu(stmf_lu_t *lu)
3006 3006 {
3007 3007 stmf_i_lu_t *ilu;
3008 3008 uint8_t *p1, *p2;
3009 3009 stmf_state_change_info_t ssci;
3010 3010 stmf_id_data_t *luid;
3011 3011
3012 3012 if ((lu->lu_id->ident_type != ID_TYPE_NAA) ||
3013 3013 (lu->lu_id->ident_length != 16) ||
3014 3014 ((lu->lu_id->ident[0] & 0xf0) != 0x60)) {
3015 3015 return (STMF_INVALID_ARG);
3016 3016 }
3017 3017 p1 = &lu->lu_id->ident[0];
3018 3018 mutex_enter(&stmf_state.stmf_lock);
3019 3019 if (stmf_state.stmf_inventory_locked) {
3020 3020 mutex_exit(&stmf_state.stmf_lock);
3021 3021 return (STMF_BUSY);
3022 3022 }
3023 3023
3024 3024 for (ilu = stmf_state.stmf_ilulist; ilu != NULL; ilu = ilu->ilu_next) {
3025 3025 p2 = &ilu->ilu_lu->lu_id->ident[0];
3026 3026 if (bcmp(p1, p2, 16) == 0) {
3027 3027 mutex_exit(&stmf_state.stmf_lock);
3028 3028 return (STMF_ALREADY);
3029 3029 }
3030 3030 }
3031 3031
3032 3032 ilu = (stmf_i_lu_t *)lu->lu_stmf_private;
3033 3033 luid = stmf_lookup_id(&stmf_state.stmf_luid_list,
3034 3034 lu->lu_id->ident_length, lu->lu_id->ident);
3035 3035 if (luid) {
3036 3036 luid->id_pt_to_object = (void *)ilu;
3037 3037 ilu->ilu_luid = luid;
3038 3038 }
3039 3039 ilu->ilu_alias = NULL;
3040 3040
3041 3041 ilu->ilu_next = stmf_state.stmf_ilulist;
3042 3042 ilu->ilu_prev = NULL;
3043 3043 if (ilu->ilu_next)
3044 3044 ilu->ilu_next->ilu_prev = ilu;
3045 3045 stmf_state.stmf_ilulist = ilu;
3046 3046 stmf_state.stmf_nlus++;
3047 3047 if (lu->lu_lp) {
3048 3048 ((stmf_i_lu_provider_t *)
3049 3049 (lu->lu_lp->lp_stmf_private))->ilp_nlus++;
3050 3050 }
3051 3051 ilu->ilu_cur_task_cntr = &ilu->ilu_task_cntr1;
3052 3052 STMF_EVENT_ALLOC_HANDLE(ilu->ilu_event_hdl);
3053 3053 cv_init(&ilu->ilu_offline_pending_cv, NULL, CV_DRIVER, NULL);
3054 3054 stmf_create_kstat_lu(ilu);
3055 3055 /*
3056 3056 * register with proxy module if available and logical unit
3057 3057 * is in active state
3058 3058 */
3059 3059 if (stmf_state.stmf_alua_state == 1 &&
3060 3060 ilu->ilu_access == STMF_LU_ACTIVE) {
3061 3061 stmf_ic_msg_status_t ic_ret = STMF_IC_MSG_SUCCESS;
3062 3062 stmf_ic_msg_t *ic_reg_lun;
3063 3063 if (lu->lu_lp && lu->lu_lp->lp_lpif_rev == LPIF_REV_2 &&
3064 3064 lu->lu_lp->lp_alua_support) {
3065 3065 ilu->ilu_alua = 1;
3066 3066 /* allocate the register message */
3067 3067 ic_reg_lun = ic_reg_lun_msg_alloc(p1,
3068 3068 lu->lu_lp->lp_name, lu->lu_proxy_reg_arg_len,
3069 3069 (uint8_t *)lu->lu_proxy_reg_arg, stmf_proxy_msg_id);
3070 3070 /* send the message */
3071 3071 if (ic_reg_lun) {
3072 3072 ic_ret = ic_tx_msg(ic_reg_lun);
3073 3073 if (ic_ret == STMF_IC_MSG_SUCCESS) {
3074 3074 stmf_proxy_msg_id++;
3075 3075 }
3076 3076 }
3077 3077 }
3078 3078 }
3079 3079 mutex_exit(&stmf_state.stmf_lock);
3080 3080
3081 3081 /* check the default state for lu */
3082 3082 if (stmf_state.stmf_default_lu_state == STMF_STATE_OFFLINE) {
3083 3083 ilu->ilu_prev_state = STMF_STATE_OFFLINE;
3084 3084 } else {
3085 3085 ilu->ilu_prev_state = STMF_STATE_ONLINE;
3086 3086 if (stmf_state.stmf_service_running) {
3087 3087 ssci.st_rflags = 0;
3088 3088 ssci.st_additional_info = NULL;
3089 3089 (void) stmf_ctl(STMF_CMD_LU_ONLINE, lu, &ssci);
3090 3090 }
3091 3091 }
3092 3092
3093 3093 /* XXX: Generate event */
3094 3094 return (STMF_SUCCESS);
3095 3095 }
3096 3096
3097 3097 stmf_status_t
3098 3098 stmf_deregister_lu(stmf_lu_t *lu)
3099 3099 {
3100 3100 stmf_i_lu_t *ilu;
3101 3101
3102 3102 mutex_enter(&stmf_state.stmf_lock);
3103 3103 if (stmf_state.stmf_inventory_locked) {
3104 3104 mutex_exit(&stmf_state.stmf_lock);
3105 3105 return (STMF_BUSY);
3106 3106 }
3107 3107 ilu = stmf_lookup_lu(lu);
3108 3108 if (ilu == NULL) {
3109 3109 mutex_exit(&stmf_state.stmf_lock);
3110 3110 return (STMF_INVALID_ARG);
3111 3111 }
3112 3112 if (ilu->ilu_state == STMF_STATE_OFFLINE) {
3113 3113 ASSERT(ilu->ilu_ntasks == ilu->ilu_ntasks_free);
3114 3114 while (ilu->ilu_flags & ILU_STALL_DEREGISTER) {
3115 3115 cv_wait(&stmf_state.stmf_cv, &stmf_state.stmf_lock);
3116 3116 }
3117 3117 if (ilu->ilu_ntasks) {
3118 3118 stmf_i_scsi_task_t *itask, *nitask;
3119 3119
3120 3120 nitask = ilu->ilu_tasks;
3121 3121 do {
3122 3122 itask = nitask;
3123 3123 nitask = itask->itask_lu_next;
3124 3124 lu->lu_task_free(itask->itask_task);
3125 3125 stmf_free(itask->itask_task);
3126 3126 } while (nitask != NULL);
3127 3127
3128 3128 ilu->ilu_tasks = ilu->ilu_free_tasks = NULL;
3129 3129 ilu->ilu_ntasks = ilu->ilu_ntasks_free = 0;
3130 3130 }
3131 3131 /* de-register with proxy if available */
3132 3132 if (ilu->ilu_access == STMF_LU_ACTIVE &&
3133 3133 stmf_state.stmf_alua_state == 1) {
3134 3134 /* de-register with proxy module */
3135 3135 stmf_ic_msg_status_t ic_ret = STMF_IC_MSG_SUCCESS;
3136 3136 stmf_ic_msg_t *ic_dereg_lun;
3137 3137 if (lu->lu_lp && lu->lu_lp->lp_lpif_rev == LPIF_REV_2 &&
3138 3138 lu->lu_lp->lp_alua_support) {
3139 3139 ilu->ilu_alua = 1;
3140 3140 /* allocate the de-register message */
3141 3141 ic_dereg_lun = ic_dereg_lun_msg_alloc(
3142 3142 lu->lu_id->ident, lu->lu_lp->lp_name, 0,
3143 3143 NULL, stmf_proxy_msg_id);
3144 3144 /* send the message */
3145 3145 if (ic_dereg_lun) {
3146 3146 ic_ret = ic_tx_msg(ic_dereg_lun);
3147 3147 if (ic_ret == STMF_IC_MSG_SUCCESS) {
3148 3148 stmf_proxy_msg_id++;
3149 3149 }
3150 3150 }
3151 3151 }
3152 3152 }
3153 3153
3154 3154 if (ilu->ilu_next)
3155 3155 ilu->ilu_next->ilu_prev = ilu->ilu_prev;
3156 3156 if (ilu->ilu_prev)
3157 3157 ilu->ilu_prev->ilu_next = ilu->ilu_next;
3158 3158 else
3159 3159 stmf_state.stmf_ilulist = ilu->ilu_next;
3160 3160 stmf_state.stmf_nlus--;
3161 3161
3162 3162 if (ilu == stmf_state.stmf_svc_ilu_draining) {
3163 3163 stmf_state.stmf_svc_ilu_draining = ilu->ilu_next;
3164 3164 }
3165 3165 if (ilu == stmf_state.stmf_svc_ilu_timing) {
3166 3166 stmf_state.stmf_svc_ilu_timing = ilu->ilu_next;
3167 3167 }
3168 3168 if (lu->lu_lp) {
3169 3169 ((stmf_i_lu_provider_t *)
3170 3170 (lu->lu_lp->lp_stmf_private))->ilp_nlus--;
3171 3171 }
3172 3172 if (ilu->ilu_luid) {
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3172 lines elided |
↑ open up ↑ |
3173 3173 ((stmf_id_data_t *)ilu->ilu_luid)->id_pt_to_object =
3174 3174 NULL;
3175 3175 ilu->ilu_luid = NULL;
3176 3176 }
3177 3177 STMF_EVENT_FREE_HANDLE(ilu->ilu_event_hdl);
3178 3178 } else {
3179 3179 mutex_exit(&stmf_state.stmf_lock);
3180 3180 return (STMF_BUSY);
3181 3181 }
3182 3182 if (ilu->ilu_kstat_info) {
3183 - kmem_free(ilu->ilu_kstat_info->ks_data,
3184 - ilu->ilu_kstat_info->ks_data_size);
3183 + kmem_free(ilu->ilu_kstat_info->ks_data, STMF_KSTAT_LU_SZ);
3185 3184 kstat_delete(ilu->ilu_kstat_info);
3186 3185 }
3187 3186 if (ilu->ilu_kstat_io) {
3188 3187 kstat_delete(ilu->ilu_kstat_io);
3189 3188 mutex_destroy(&ilu->ilu_kstat_lock);
3190 3189 }
3191 3190 cv_destroy(&ilu->ilu_offline_pending_cv);
3192 3191 mutex_exit(&stmf_state.stmf_lock);
3193 3192 return (STMF_SUCCESS);
3194 3193 }
3195 3194
3196 3195 void
3197 3196 stmf_set_port_standby(stmf_local_port_t *lport, uint16_t rtpid)
3198 3197 {
3199 3198 stmf_i_local_port_t *ilport =
3200 3199 (stmf_i_local_port_t *)lport->lport_stmf_private;
3201 3200 ilport->ilport_rtpid = rtpid;
3202 3201 ilport->ilport_standby = 1;
3203 3202 }
3204 3203
3205 3204 void
3206 3205 stmf_set_port_alua(stmf_local_port_t *lport)
3207 3206 {
3208 3207 stmf_i_local_port_t *ilport =
3209 3208 (stmf_i_local_port_t *)lport->lport_stmf_private;
3210 3209 ilport->ilport_alua = 1;
3211 3210 }
3212 3211
3213 3212 stmf_status_t
3214 3213 stmf_register_local_port(stmf_local_port_t *lport)
3215 3214 {
3216 3215 stmf_i_local_port_t *ilport;
3217 3216 stmf_state_change_info_t ssci;
3218 3217 int start_workers = 0;
3219 3218
3220 3219 mutex_enter(&stmf_state.stmf_lock);
3221 3220 if (stmf_state.stmf_inventory_locked) {
3222 3221 mutex_exit(&stmf_state.stmf_lock);
3223 3222 return (STMF_BUSY);
3224 3223 }
3225 3224 ilport = (stmf_i_local_port_t *)lport->lport_stmf_private;
3226 3225 rw_init(&ilport->ilport_lock, NULL, RW_DRIVER, NULL);
3227 3226
3228 3227 ilport->ilport_instance =
3229 3228 id_alloc_nosleep(stmf_state.stmf_ilport_inst_space);
3230 3229 if (ilport->ilport_instance == -1) {
3231 3230 mutex_exit(&stmf_state.stmf_lock);
3232 3231 return (STMF_FAILURE);
3233 3232 }
3234 3233 ilport->ilport_next = stmf_state.stmf_ilportlist;
3235 3234 ilport->ilport_prev = NULL;
3236 3235 if (ilport->ilport_next)
3237 3236 ilport->ilport_next->ilport_prev = ilport;
3238 3237 stmf_state.stmf_ilportlist = ilport;
3239 3238 stmf_state.stmf_nlports++;
3240 3239 if (lport->lport_pp) {
3241 3240 ((stmf_i_port_provider_t *)
3242 3241 (lport->lport_pp->pp_stmf_private))->ipp_npps++;
3243 3242 }
3244 3243 ilport->ilport_tg =
3245 3244 stmf_lookup_group_for_target(lport->lport_id->ident,
3246 3245 lport->lport_id->ident_length);
3247 3246
3248 3247 /*
3249 3248 * rtpid will/must be set if this is a standby port
3250 3249 * only register ports that are not standby (proxy) ports
3251 3250 * and ports that are alua participants (ilport_alua == 1)
3252 3251 */
3253 3252 if (ilport->ilport_standby == 0) {
3254 3253 ilport->ilport_rtpid = atomic_inc_16_nv(&stmf_rtpid_counter);
3255 3254 }
3256 3255
3257 3256 if (stmf_state.stmf_alua_state == 1 &&
3258 3257 ilport->ilport_standby == 0 &&
3259 3258 ilport->ilport_alua == 1) {
3260 3259 stmf_ic_msg_t *ic_reg_port;
3261 3260 stmf_ic_msg_status_t ic_ret;
3262 3261 stmf_local_port_t *lport;
3263 3262 lport = ilport->ilport_lport;
3264 3263 ic_reg_port = ic_reg_port_msg_alloc(
3265 3264 lport->lport_id, ilport->ilport_rtpid,
3266 3265 0, NULL, stmf_proxy_msg_id);
3267 3266 if (ic_reg_port) {
3268 3267 ic_ret = ic_tx_msg(ic_reg_port);
3269 3268 if (ic_ret == STMF_IC_MSG_SUCCESS) {
3270 3269 ilport->ilport_reg_msgid = stmf_proxy_msg_id++;
3271 3270 } else {
3272 3271 cmn_err(CE_WARN, "error on port registration "
3273 3272 "port - %s", ilport->ilport_kstat_tgt_name);
3274 3273 }
3275 3274 }
3276 3275 }
3277 3276 STMF_EVENT_ALLOC_HANDLE(ilport->ilport_event_hdl);
3278 3277 stmf_create_kstat_lport(ilport);
3279 3278 if (stmf_workers_state == STMF_WORKERS_DISABLED) {
3280 3279 stmf_workers_state = STMF_WORKERS_ENABLING;
3281 3280 start_workers = 1;
3282 3281 }
3283 3282 mutex_exit(&stmf_state.stmf_lock);
3284 3283
3285 3284 if (start_workers)
3286 3285 stmf_worker_init();
3287 3286
3288 3287 /* the default state of LPORT */
3289 3288
3290 3289 if (stmf_state.stmf_default_lport_state == STMF_STATE_OFFLINE) {
3291 3290 ilport->ilport_prev_state = STMF_STATE_OFFLINE;
3292 3291 } else {
3293 3292 ilport->ilport_prev_state = STMF_STATE_ONLINE;
3294 3293 if (stmf_state.stmf_service_running) {
3295 3294 ssci.st_rflags = 0;
3296 3295 ssci.st_additional_info = NULL;
3297 3296 (void) stmf_ctl(STMF_CMD_LPORT_ONLINE, lport, &ssci);
3298 3297 }
3299 3298 }
3300 3299
3301 3300 /* XXX: Generate event */
3302 3301 return (STMF_SUCCESS);
3303 3302 }
3304 3303
3305 3304 stmf_status_t
3306 3305 stmf_deregister_local_port(stmf_local_port_t *lport)
3307 3306 {
3308 3307 stmf_i_local_port_t *ilport;
3309 3308
3310 3309 mutex_enter(&stmf_state.stmf_lock);
3311 3310 if (stmf_state.stmf_inventory_locked) {
3312 3311 mutex_exit(&stmf_state.stmf_lock);
3313 3312 return (STMF_BUSY);
3314 3313 }
3315 3314
3316 3315 /* dequeue all object requests from active queue */
3317 3316 stmf_svc_kill_obj_requests(lport);
3318 3317
3319 3318 ilport = (stmf_i_local_port_t *)lport->lport_stmf_private;
3320 3319
3321 3320 /*
3322 3321 * deregister ports that are not standby (proxy)
3323 3322 */
3324 3323 if (stmf_state.stmf_alua_state == 1 &&
3325 3324 ilport->ilport_standby == 0 &&
3326 3325 ilport->ilport_alua == 1) {
3327 3326 stmf_ic_msg_t *ic_dereg_port;
3328 3327 stmf_ic_msg_status_t ic_ret;
3329 3328 ic_dereg_port = ic_dereg_port_msg_alloc(
3330 3329 lport->lport_id, 0, NULL, stmf_proxy_msg_id);
3331 3330 if (ic_dereg_port) {
3332 3331 ic_ret = ic_tx_msg(ic_dereg_port);
3333 3332 if (ic_ret == STMF_IC_MSG_SUCCESS) {
3334 3333 stmf_proxy_msg_id++;
3335 3334 }
3336 3335 }
3337 3336 }
3338 3337
3339 3338 if (ilport->ilport_nsessions == 0) {
3340 3339 if (ilport->ilport_next)
3341 3340 ilport->ilport_next->ilport_prev = ilport->ilport_prev;
3342 3341 if (ilport->ilport_prev)
3343 3342 ilport->ilport_prev->ilport_next = ilport->ilport_next;
3344 3343 else
3345 3344 stmf_state.stmf_ilportlist = ilport->ilport_next;
3346 3345 id_free(stmf_state.stmf_ilport_inst_space,
3347 3346 ilport->ilport_instance);
3348 3347 rw_destroy(&ilport->ilport_lock);
3349 3348 stmf_state.stmf_nlports--;
3350 3349 if (lport->lport_pp) {
3351 3350 ((stmf_i_port_provider_t *)
|
↓ open down ↓ |
157 lines elided |
↑ open up ↑ |
3352 3351 (lport->lport_pp->pp_stmf_private))->ipp_npps--;
3353 3352 }
3354 3353 ilport->ilport_tg = NULL;
3355 3354 STMF_EVENT_FREE_HANDLE(ilport->ilport_event_hdl);
3356 3355 } else {
3357 3356 mutex_exit(&stmf_state.stmf_lock);
3358 3357 return (STMF_BUSY);
3359 3358 }
3360 3359 if (ilport->ilport_kstat_info) {
3361 3360 kmem_free(ilport->ilport_kstat_info->ks_data,
3362 - ilport->ilport_kstat_info->ks_data_size);
3361 + STMF_KSTAT_TGT_SZ);
3363 3362 kstat_delete(ilport->ilport_kstat_info);
3364 3363 }
3365 3364 if (ilport->ilport_kstat_io) {
3366 3365 kstat_delete(ilport->ilport_kstat_io);
3367 3366 mutex_destroy(&ilport->ilport_kstat_lock);
3368 3367 }
3369 3368 mutex_exit(&stmf_state.stmf_lock);
3370 3369 return (STMF_SUCCESS);
3371 3370 }
3372 3371
3373 3372 /*
3374 3373 * Rport id/instance mappings remain valid until STMF is unloaded
3375 3374 */
3376 3375 static int
3377 3376 stmf_irport_compare(const void *void_irport1, const void *void_irport2)
3378 3377 {
3379 3378 const stmf_i_remote_port_t *irport1 = void_irport1;
3380 3379 const stmf_i_remote_port_t *irport2 = void_irport2;
3381 3380 int result;
3382 3381
3383 3382 /* Sort by code set then ident */
3384 3383 if (irport1->irport_id->code_set <
3385 3384 irport2->irport_id->code_set) {
3386 3385 return (-1);
3387 3386 } else if (irport1->irport_id->code_set >
3388 3387 irport2->irport_id->code_set) {
3389 3388 return (1);
3390 3389 }
3391 3390
3392 3391 /* Next by ident length */
3393 3392 if (irport1->irport_id->ident_length <
3394 3393 irport2->irport_id->ident_length) {
3395 3394 return (-1);
3396 3395 } else if (irport1->irport_id->ident_length >
3397 3396 irport2->irport_id->ident_length) {
3398 3397 return (1);
3399 3398 }
3400 3399
3401 3400 /* Code set and ident length both match, now compare idents */
3402 3401 result = memcmp(irport1->irport_id->ident,
3403 3402 irport2->irport_id->ident,
3404 3403 irport1->irport_id->ident_length);
3405 3404
3406 3405 if (result < 0) {
3407 3406 return (-1);
3408 3407 } else if (result > 0) {
3409 3408 return (1);
3410 3409 }
3411 3410
3412 3411 return (0);
3413 3412 }
3414 3413
3415 3414 static stmf_i_remote_port_t *
3416 3415 stmf_irport_create(scsi_devid_desc_t *rport_devid)
3417 3416 {
3418 3417 int alloc_len;
3419 3418 stmf_i_remote_port_t *irport;
3420 3419
3421 3420 /*
3422 3421 * Lookup will bump the refcnt if there's an existing rport
3423 3422 * context for this identifier.
3424 3423 */
3425 3424 ASSERT(mutex_owned(&stmf_state.stmf_lock));
3426 3425
3427 3426 alloc_len = sizeof (*irport) + sizeof (scsi_devid_desc_t) +
3428 3427 rport_devid->ident_length - 1;
3429 3428 irport = kmem_zalloc(alloc_len, KM_NOSLEEP);
3430 3429 if (irport == NULL) {
3431 3430 return (NULL);
3432 3431 }
3433 3432
3434 3433 irport->irport_instance =
3435 3434 id_alloc_nosleep(stmf_state.stmf_irport_inst_space);
3436 3435 if (irport->irport_instance == -1) {
3437 3436 kmem_free(irport, alloc_len);
3438 3437 return (NULL);
3439 3438 }
3440 3439
3441 3440 irport->irport_id =
3442 3441 (struct scsi_devid_desc *)(irport + 1); /* Ptr. Arith. */
3443 3442 bcopy(rport_devid, irport->irport_id,
3444 3443 sizeof (scsi_devid_desc_t) + rport_devid->ident_length - 1);
3445 3444 irport->irport_refcnt = 1;
3446 3445 mutex_init(&irport->irport_mutex, NULL, MUTEX_DEFAULT, NULL);
3447 3446
3448 3447 return (irport);
3449 3448 }
3450 3449
3451 3450 static void
3452 3451 stmf_irport_destroy(stmf_i_remote_port_t *irport)
3453 3452 {
3454 3453 id_free(stmf_state.stmf_irport_inst_space, irport->irport_instance);
3455 3454 mutex_destroy(&irport->irport_mutex);
3456 3455 kmem_free(irport, sizeof (*irport) + sizeof (scsi_devid_desc_t) +
3457 3456 irport->irport_id->ident_length - 1);
3458 3457 }
3459 3458
3460 3459 static stmf_i_remote_port_t *
3461 3460 stmf_irport_register(scsi_devid_desc_t *rport_devid)
3462 3461 {
3463 3462 stmf_i_remote_port_t *irport;
3464 3463
3465 3464 mutex_enter(&stmf_state.stmf_lock);
3466 3465
3467 3466 /*
3468 3467 * Lookup will bump the refcnt if there's an existing rport
3469 3468 * context for this identifier.
3470 3469 */
3471 3470 if ((irport = stmf_irport_lookup_locked(rport_devid)) != NULL) {
3472 3471 mutex_exit(&stmf_state.stmf_lock);
3473 3472 return (irport);
3474 3473 }
3475 3474
3476 3475 irport = stmf_irport_create(rport_devid);
3477 3476 if (irport == NULL) {
3478 3477 mutex_exit(&stmf_state.stmf_lock);
3479 3478 return (NULL);
3480 3479 }
3481 3480
3482 3481 avl_add(&stmf_state.stmf_irportlist, irport);
3483 3482 mutex_exit(&stmf_state.stmf_lock);
3484 3483
3485 3484 return (irport);
3486 3485 }
3487 3486
3488 3487 static stmf_i_remote_port_t *
3489 3488 stmf_irport_lookup_locked(scsi_devid_desc_t *rport_devid)
3490 3489 {
3491 3490 stmf_i_remote_port_t *irport;
3492 3491 stmf_i_remote_port_t tmp_irport;
3493 3492
3494 3493 ASSERT(mutex_owned(&stmf_state.stmf_lock));
3495 3494 tmp_irport.irport_id = rport_devid;
3496 3495 irport = avl_find(&stmf_state.stmf_irportlist, &tmp_irport, NULL);
3497 3496 if (irport != NULL) {
3498 3497 mutex_enter(&irport->irport_mutex);
3499 3498 irport->irport_refcnt++;
3500 3499 mutex_exit(&irport->irport_mutex);
3501 3500 }
3502 3501
3503 3502 return (irport);
3504 3503 }
3505 3504
3506 3505 static void
3507 3506 stmf_irport_deregister(stmf_i_remote_port_t *irport)
3508 3507 {
3509 3508 /*
3510 3509 * If we were actually going to remove unreferenced remote ports
3511 3510 * we would want to acquire stmf_state.stmf_lock before getting
3512 3511 * the irport mutex.
3513 3512 *
3514 3513 * Instead we're just going to leave it there even if unreferenced.
3515 3514 */
3516 3515 mutex_enter(&irport->irport_mutex);
3517 3516 irport->irport_refcnt--;
3518 3517 mutex_exit(&irport->irport_mutex);
3519 3518 }
3520 3519
3521 3520 /*
3522 3521 * Port provider has to make sure that register/deregister session and
3523 3522 * port are serialized calls.
3524 3523 */
3525 3524 stmf_status_t
3526 3525 stmf_register_scsi_session(stmf_local_port_t *lport, stmf_scsi_session_t *ss)
3527 3526 {
3528 3527 stmf_i_scsi_session_t *iss;
3529 3528 stmf_i_local_port_t *ilport = (stmf_i_local_port_t *)
3530 3529 lport->lport_stmf_private;
3531 3530 uint8_t lun[8];
3532 3531
3533 3532 /*
3534 3533 * Port state has to be online to register a scsi session. It is
3535 3534 * possible that we started an offline operation and a new SCSI
3536 3535 * session started at the same time (in that case also we are going
3537 3536 * to fail the registeration). But any other state is simply
3538 3537 * a bad port provider implementation.
3539 3538 */
3540 3539 if (ilport->ilport_state != STMF_STATE_ONLINE) {
3541 3540 if (ilport->ilport_state != STMF_STATE_OFFLINING) {
3542 3541 stmf_trace(lport->lport_alias, "Port is trying to "
3543 3542 "register a session while the state is neither "
3544 3543 "online nor offlining");
3545 3544 }
3546 3545 return (STMF_FAILURE);
3547 3546 }
3548 3547 bzero(lun, 8);
3549 3548 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private;
3550 3549 if ((iss->iss_irport = stmf_irport_register(ss->ss_rport_id)) == NULL) {
3551 3550 stmf_trace(lport->lport_alias, "Could not register "
3552 3551 "remote port during session registration");
3553 3552 return (STMF_FAILURE);
3554 3553 }
3555 3554
3556 3555 iss->iss_flags |= ISS_BEING_CREATED;
3557 3556
3558 3557 if (ss->ss_rport == NULL) {
3559 3558 iss->iss_flags |= ISS_NULL_TPTID;
3560 3559 ss->ss_rport = stmf_scsilib_devid_to_remote_port(
3561 3560 ss->ss_rport_id);
3562 3561 if (ss->ss_rport == NULL) {
3563 3562 iss->iss_flags &= ~(ISS_NULL_TPTID | ISS_BEING_CREATED);
3564 3563 stmf_trace(lport->lport_alias, "Device id to "
3565 3564 "remote port conversion failed");
3566 3565 return (STMF_FAILURE);
3567 3566 }
3568 3567 } else {
3569 3568 if (!stmf_scsilib_tptid_validate(ss->ss_rport->rport_tptid,
3570 3569 ss->ss_rport->rport_tptid_sz, NULL)) {
3571 3570 iss->iss_flags &= ~ISS_BEING_CREATED;
3572 3571 stmf_trace(lport->lport_alias, "Remote port "
3573 3572 "transport id validation failed");
3574 3573 return (STMF_FAILURE);
3575 3574 }
3576 3575 }
3577 3576
3578 3577 /* sessions use the ilport_lock. No separate lock is required */
3579 3578 iss->iss_lockp = &ilport->ilport_lock;
3580 3579
3581 3580 if (iss->iss_sm != NULL)
3582 3581 cmn_err(CE_PANIC, "create lun map called with non NULL map");
3583 3582 iss->iss_sm = (stmf_lun_map_t *)kmem_zalloc(sizeof (stmf_lun_map_t),
3584 3583 KM_SLEEP);
3585 3584
3586 3585 mutex_enter(&stmf_state.stmf_lock);
3587 3586 rw_enter(&ilport->ilport_lock, RW_WRITER);
3588 3587 (void) stmf_session_create_lun_map(ilport, iss);
3589 3588 ilport->ilport_nsessions++;
3590 3589 iss->iss_next = ilport->ilport_ss_list;
3591 3590 ilport->ilport_ss_list = iss;
3592 3591 rw_exit(&ilport->ilport_lock);
3593 3592 mutex_exit(&stmf_state.stmf_lock);
3594 3593
3595 3594 iss->iss_creation_time = ddi_get_time();
3596 3595 ss->ss_session_id = atomic_inc_64_nv(&stmf_session_counter);
3597 3596 iss->iss_flags &= ~ISS_BEING_CREATED;
3598 3597 /* XXX should we remove ISS_LUN_INVENTORY_CHANGED on new session? */
3599 3598 iss->iss_flags &= ~ISS_LUN_INVENTORY_CHANGED;
3600 3599 DTRACE_PROBE2(session__online, stmf_local_port_t *, lport,
3601 3600 stmf_scsi_session_t *, ss);
3602 3601 return (STMF_SUCCESS);
3603 3602 }
3604 3603
3605 3604 void
3606 3605 stmf_deregister_scsi_session(stmf_local_port_t *lport, stmf_scsi_session_t *ss)
3607 3606 {
3608 3607 stmf_i_local_port_t *ilport = (stmf_i_local_port_t *)
3609 3608 lport->lport_stmf_private;
3610 3609 stmf_i_scsi_session_t *iss, **ppss;
3611 3610 int found = 0;
3612 3611 stmf_ic_msg_t *ic_session_dereg;
3613 3612 stmf_status_t ic_ret = STMF_FAILURE;
3614 3613
3615 3614 DTRACE_PROBE2(session__offline, stmf_local_port_t *, lport,
3616 3615 stmf_scsi_session_t *, ss);
3617 3616
3618 3617 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private;
3619 3618 if (ss->ss_rport_alias) {
3620 3619 ss->ss_rport_alias = NULL;
3621 3620 }
3622 3621
3623 3622 try_dereg_ss_again:
3624 3623 mutex_enter(&stmf_state.stmf_lock);
3625 3624 atomic_and_32(&iss->iss_flags,
3626 3625 ~(ISS_LUN_INVENTORY_CHANGED | ISS_GOT_INITIAL_LUNS));
3627 3626 if (iss->iss_flags & ISS_EVENT_ACTIVE) {
3628 3627 mutex_exit(&stmf_state.stmf_lock);
3629 3628 delay(1);
3630 3629 goto try_dereg_ss_again;
3631 3630 }
3632 3631
3633 3632 /* dereg proxy session if not standby port */
3634 3633 if (stmf_state.stmf_alua_state == 1 &&
3635 3634 ilport->ilport_standby == 0 &&
3636 3635 ilport->ilport_alua == 1) {
3637 3636 ic_session_dereg = ic_session_dereg_msg_alloc(
3638 3637 ss, stmf_proxy_msg_id);
3639 3638 if (ic_session_dereg) {
3640 3639 ic_ret = ic_tx_msg(ic_session_dereg);
3641 3640 if (ic_ret == STMF_IC_MSG_SUCCESS) {
3642 3641 stmf_proxy_msg_id++;
3643 3642 }
3644 3643 }
3645 3644 }
3646 3645
3647 3646 rw_enter(&ilport->ilport_lock, RW_WRITER);
3648 3647 for (ppss = &ilport->ilport_ss_list; *ppss != NULL;
3649 3648 ppss = &((*ppss)->iss_next)) {
3650 3649 if (iss == (*ppss)) {
3651 3650 *ppss = (*ppss)->iss_next;
3652 3651 found = 1;
3653 3652 break;
3654 3653 }
3655 3654 }
3656 3655 if (!found) {
3657 3656 cmn_err(CE_PANIC, "Deregister session called for non existent"
3658 3657 " session");
3659 3658 }
3660 3659 ilport->ilport_nsessions--;
3661 3660
3662 3661 stmf_irport_deregister(iss->iss_irport);
3663 3662 (void) stmf_session_destroy_lun_map(ilport, iss);
3664 3663 rw_exit(&ilport->ilport_lock);
3665 3664 mutex_exit(&stmf_state.stmf_lock);
3666 3665
3667 3666 if (iss->iss_flags & ISS_NULL_TPTID) {
3668 3667 stmf_remote_port_free(ss->ss_rport);
3669 3668 }
3670 3669 }
3671 3670
3672 3671 stmf_i_scsi_session_t *
3673 3672 stmf_session_id_to_issptr(uint64_t session_id, int stay_locked)
3674 3673 {
3675 3674 stmf_i_local_port_t *ilport;
3676 3675 stmf_i_scsi_session_t *iss;
3677 3676
3678 3677 mutex_enter(&stmf_state.stmf_lock);
3679 3678 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL;
3680 3679 ilport = ilport->ilport_next) {
3681 3680 rw_enter(&ilport->ilport_lock, RW_WRITER);
3682 3681 for (iss = ilport->ilport_ss_list; iss != NULL;
3683 3682 iss = iss->iss_next) {
3684 3683 if (iss->iss_ss->ss_session_id == session_id) {
3685 3684 if (!stay_locked)
3686 3685 rw_exit(&ilport->ilport_lock);
3687 3686 mutex_exit(&stmf_state.stmf_lock);
3688 3687 return (iss);
3689 3688 }
3690 3689 }
3691 3690 rw_exit(&ilport->ilport_lock);
3692 3691 }
3693 3692 mutex_exit(&stmf_state.stmf_lock);
3694 3693 return (NULL);
3695 3694 }
3696 3695
3697 3696 void
3698 3697 stmf_release_itl_handle(stmf_lu_t *lu, stmf_itl_data_t *itl)
3699 3698 {
3700 3699 stmf_itl_data_t **itlpp;
3701 3700 stmf_i_lu_t *ilu;
3702 3701
3703 3702 ASSERT(itl->itl_flags & STMF_ITL_BEING_TERMINATED);
3704 3703
3705 3704 ilu = (stmf_i_lu_t *)lu->lu_stmf_private;
3706 3705 mutex_enter(&ilu->ilu_task_lock);
3707 3706 for (itlpp = &ilu->ilu_itl_list; (*itlpp) != NULL;
3708 3707 itlpp = &(*itlpp)->itl_next) {
3709 3708 if ((*itlpp) == itl)
3710 3709 break;
3711 3710 }
3712 3711 ASSERT((*itlpp) != NULL);
3713 3712 *itlpp = itl->itl_next;
3714 3713 mutex_exit(&ilu->ilu_task_lock);
3715 3714 lu->lu_abort(lu, STMF_LU_ITL_HANDLE_REMOVED, itl->itl_handle,
3716 3715 (uint32_t)itl->itl_hdlrm_reason);
3717 3716
3718 3717 kmem_free(itl, sizeof (*itl));
3719 3718 }
3720 3719
3721 3720 stmf_status_t
3722 3721 stmf_register_itl_handle(stmf_lu_t *lu, uint8_t *lun,
3723 3722 stmf_scsi_session_t *ss, uint64_t session_id, void *itl_handle)
3724 3723 {
3725 3724 stmf_itl_data_t *itl;
3726 3725 stmf_i_scsi_session_t *iss;
3727 3726 stmf_lun_map_ent_t *lun_map_ent;
3728 3727 stmf_i_lu_t *ilu;
3729 3728 uint16_t n;
3730 3729
3731 3730 ilu = (stmf_i_lu_t *)lu->lu_stmf_private;
3732 3731 if (ss == NULL) {
3733 3732 iss = stmf_session_id_to_issptr(session_id, 1);
3734 3733 if (iss == NULL)
3735 3734 return (STMF_NOT_FOUND);
3736 3735 } else {
3737 3736 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private;
3738 3737 }
3739 3738
3740 3739 mutex_enter(&stmf_state.stmf_lock);
3741 3740 rw_enter(iss->iss_lockp, RW_WRITER);
3742 3741 n = ((uint16_t)lun[1] | (((uint16_t)(lun[0] & 0x3F)) << 8));
3743 3742 lun_map_ent = (stmf_lun_map_ent_t *)
3744 3743 stmf_get_ent_from_map(iss->iss_sm, n);
3745 3744 if ((lun_map_ent == NULL) || (lun_map_ent->ent_lu != lu)) {
3746 3745 rw_exit(iss->iss_lockp);
3747 3746 mutex_exit(&stmf_state.stmf_lock);
3748 3747 return (STMF_NOT_FOUND);
3749 3748 }
3750 3749 if (lun_map_ent->ent_itl_datap != NULL) {
3751 3750 rw_exit(iss->iss_lockp);
3752 3751 mutex_exit(&stmf_state.stmf_lock);
3753 3752 return (STMF_ALREADY);
3754 3753 }
3755 3754
3756 3755 itl = (stmf_itl_data_t *)kmem_zalloc(sizeof (*itl), KM_NOSLEEP);
3757 3756 if (itl == NULL) {
3758 3757 rw_exit(iss->iss_lockp);
3759 3758 mutex_exit(&stmf_state.stmf_lock);
3760 3759 return (STMF_ALLOC_FAILURE);
3761 3760 }
3762 3761
3763 3762 itl->itl_ilu = ilu;
3764 3763 itl->itl_session = iss;
3765 3764 itl->itl_counter = 1;
3766 3765 itl->itl_lun = n;
3767 3766 itl->itl_handle = itl_handle;
3768 3767
3769 3768 mutex_enter(&ilu->ilu_task_lock);
3770 3769 itl->itl_next = ilu->ilu_itl_list;
3771 3770 ilu->ilu_itl_list = itl;
3772 3771 mutex_exit(&ilu->ilu_task_lock);
3773 3772 lun_map_ent->ent_itl_datap = itl;
3774 3773 rw_exit(iss->iss_lockp);
3775 3774 mutex_exit(&stmf_state.stmf_lock);
3776 3775
3777 3776 return (STMF_SUCCESS);
3778 3777 }
3779 3778
3780 3779 void
3781 3780 stmf_do_itl_dereg(stmf_lu_t *lu, stmf_itl_data_t *itl, uint8_t hdlrm_reason)
3782 3781 {
3783 3782 uint8_t old, new;
3784 3783
3785 3784 do {
3786 3785 old = new = itl->itl_flags;
3787 3786 if (old & STMF_ITL_BEING_TERMINATED)
3788 3787 return;
3789 3788 new |= STMF_ITL_BEING_TERMINATED;
3790 3789 } while (atomic_cas_8(&itl->itl_flags, old, new) != old);
3791 3790 itl->itl_hdlrm_reason = hdlrm_reason;
3792 3791
3793 3792 ASSERT(itl->itl_counter);
3794 3793
3795 3794 if (atomic_dec_32_nv(&itl->itl_counter))
3796 3795 return;
3797 3796
3798 3797 stmf_release_itl_handle(lu, itl);
3799 3798 }
3800 3799
3801 3800 stmf_status_t
3802 3801 stmf_deregister_all_lu_itl_handles(stmf_lu_t *lu)
3803 3802 {
3804 3803 stmf_i_lu_t *ilu;
3805 3804 stmf_i_local_port_t *ilport;
3806 3805 stmf_i_scsi_session_t *iss;
3807 3806 stmf_lun_map_t *lm;
3808 3807 stmf_lun_map_ent_t *ent;
3809 3808 uint32_t nmaps, nu;
3810 3809 stmf_itl_data_t **itl_list;
3811 3810 int i;
3812 3811
3813 3812 ilu = (stmf_i_lu_t *)lu->lu_stmf_private;
3814 3813
3815 3814 dereg_itl_start:;
3816 3815 nmaps = ilu->ilu_ref_cnt;
3817 3816 if (nmaps == 0)
3818 3817 return (STMF_NOT_FOUND);
3819 3818 itl_list = (stmf_itl_data_t **)kmem_zalloc(
3820 3819 nmaps * sizeof (stmf_itl_data_t *), KM_SLEEP);
3821 3820 mutex_enter(&stmf_state.stmf_lock);
3822 3821 if (nmaps != ilu->ilu_ref_cnt) {
3823 3822 /* Something changed, start all over */
3824 3823 mutex_exit(&stmf_state.stmf_lock);
3825 3824 kmem_free(itl_list, nmaps * sizeof (stmf_itl_data_t *));
3826 3825 goto dereg_itl_start;
3827 3826 }
3828 3827 nu = 0;
3829 3828 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL;
3830 3829 ilport = ilport->ilport_next) {
3831 3830 rw_enter(&ilport->ilport_lock, RW_WRITER);
3832 3831 for (iss = ilport->ilport_ss_list; iss != NULL;
3833 3832 iss = iss->iss_next) {
3834 3833 lm = iss->iss_sm;
3835 3834 if (!lm)
3836 3835 continue;
3837 3836 for (i = 0; i < lm->lm_nentries; i++) {
3838 3837 if (lm->lm_plus[i] == NULL)
3839 3838 continue;
3840 3839 ent = (stmf_lun_map_ent_t *)lm->lm_plus[i];
3841 3840 if ((ent->ent_lu == lu) &&
3842 3841 (ent->ent_itl_datap)) {
3843 3842 itl_list[nu++] = ent->ent_itl_datap;
3844 3843 ent->ent_itl_datap = NULL;
3845 3844 if (nu == nmaps) {
3846 3845 rw_exit(&ilport->ilport_lock);
3847 3846 goto dai_scan_done;
3848 3847 }
3849 3848 }
3850 3849 } /* lun table for a session */
3851 3850 } /* sessions */
3852 3851 rw_exit(&ilport->ilport_lock);
3853 3852 } /* ports */
3854 3853
3855 3854 dai_scan_done:
3856 3855 mutex_exit(&stmf_state.stmf_lock);
3857 3856
3858 3857 for (i = 0; i < nu; i++) {
3859 3858 stmf_do_itl_dereg(lu, itl_list[i],
3860 3859 STMF_ITL_REASON_DEREG_REQUEST);
3861 3860 }
3862 3861 kmem_free(itl_list, nmaps * sizeof (stmf_itl_data_t *));
3863 3862
3864 3863 return (STMF_SUCCESS);
3865 3864 }
3866 3865
3867 3866 stmf_status_t
3868 3867 stmf_get_itl_handle(stmf_lu_t *lu, uint8_t *lun, stmf_scsi_session_t *ss,
3869 3868 uint64_t session_id, void **itl_handle_retp)
3870 3869 {
3871 3870 stmf_i_scsi_session_t *iss;
3872 3871 stmf_lun_map_ent_t *ent;
3873 3872 stmf_lun_map_t *lm;
3874 3873 stmf_status_t ret;
3875 3874 int i;
3876 3875 uint16_t n;
3877 3876
3878 3877 if (ss == NULL) {
3879 3878 iss = stmf_session_id_to_issptr(session_id, 1);
3880 3879 if (iss == NULL)
3881 3880 return (STMF_NOT_FOUND);
3882 3881 } else {
3883 3882 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private;
3884 3883 rw_enter(iss->iss_lockp, RW_WRITER);
3885 3884 }
3886 3885
3887 3886 ent = NULL;
3888 3887 if (lun == NULL) {
3889 3888 lm = iss->iss_sm;
3890 3889 for (i = 0; i < lm->lm_nentries; i++) {
3891 3890 if (lm->lm_plus[i] == NULL)
3892 3891 continue;
3893 3892 ent = (stmf_lun_map_ent_t *)lm->lm_plus[i];
3894 3893 if (ent->ent_lu == lu)
3895 3894 break;
3896 3895 }
3897 3896 } else {
3898 3897 n = ((uint16_t)lun[1] | (((uint16_t)(lun[0] & 0x3F)) << 8));
3899 3898 ent = (stmf_lun_map_ent_t *)
3900 3899 stmf_get_ent_from_map(iss->iss_sm, n);
3901 3900 if (lu && (ent->ent_lu != lu))
3902 3901 ent = NULL;
3903 3902 }
3904 3903 if (ent && ent->ent_itl_datap) {
3905 3904 *itl_handle_retp = ent->ent_itl_datap->itl_handle;
3906 3905 ret = STMF_SUCCESS;
3907 3906 } else {
3908 3907 ret = STMF_NOT_FOUND;
3909 3908 }
3910 3909
3911 3910 rw_exit(iss->iss_lockp);
3912 3911 return (ret);
3913 3912 }
3914 3913
3915 3914 stmf_data_buf_t *
3916 3915 stmf_alloc_dbuf(scsi_task_t *task, uint32_t size, uint32_t *pminsize,
3917 3916 uint32_t flags)
3918 3917 {
3919 3918 stmf_i_scsi_task_t *itask =
3920 3919 (stmf_i_scsi_task_t *)task->task_stmf_private;
3921 3920 stmf_local_port_t *lport = task->task_lport;
3922 3921 stmf_data_buf_t *dbuf;
3923 3922 uint8_t ndx;
3924 3923
3925 3924 ndx = stmf_first_zero[itask->itask_allocated_buf_map];
3926 3925 if (ndx == 0xff)
3927 3926 return (NULL);
3928 3927 dbuf = itask->itask_dbufs[ndx] = lport->lport_ds->ds_alloc_data_buf(
3929 3928 task, size, pminsize, flags);
3930 3929 if (dbuf) {
3931 3930 task->task_cur_nbufs++;
3932 3931 itask->itask_allocated_buf_map |= (1 << ndx);
3933 3932 dbuf->db_flags &= ~DB_LPORT_XFER_ACTIVE;
3934 3933 dbuf->db_handle = ndx;
3935 3934 return (dbuf);
3936 3935 }
3937 3936
3938 3937 return (NULL);
3939 3938 }
3940 3939
3941 3940 stmf_status_t
3942 3941 stmf_setup_dbuf(scsi_task_t *task, stmf_data_buf_t *dbuf, uint32_t flags)
3943 3942 {
3944 3943 stmf_i_scsi_task_t *itask =
3945 3944 (stmf_i_scsi_task_t *)task->task_stmf_private;
3946 3945 stmf_local_port_t *lport = task->task_lport;
3947 3946 uint8_t ndx;
3948 3947 stmf_status_t ret;
3949 3948
3950 3949 ASSERT(task->task_additional_flags & TASK_AF_ACCEPT_LU_DBUF);
3951 3950 ASSERT(lport->lport_ds->ds_setup_dbuf != NULL);
3952 3951 ASSERT(dbuf->db_flags & DB_LU_DATA_BUF);
3953 3952
3954 3953 if ((task->task_additional_flags & TASK_AF_ACCEPT_LU_DBUF) == 0)
3955 3954 return (STMF_FAILURE);
3956 3955 if (lport->lport_ds->ds_setup_dbuf == NULL)
3957 3956 return (STMF_FAILURE);
3958 3957
3959 3958 ndx = stmf_first_zero[itask->itask_allocated_buf_map];
3960 3959 if (ndx == 0xff)
3961 3960 return (STMF_FAILURE);
3962 3961 ret = lport->lport_ds->ds_setup_dbuf(task, dbuf, flags);
3963 3962 if (ret == STMF_FAILURE)
3964 3963 return (STMF_FAILURE);
3965 3964 itask->itask_dbufs[ndx] = dbuf;
3966 3965 task->task_cur_nbufs++;
3967 3966 itask->itask_allocated_buf_map |= (1 << ndx);
3968 3967 dbuf->db_handle = ndx;
3969 3968
3970 3969 return (STMF_SUCCESS);
3971 3970 }
3972 3971
3973 3972 void
3974 3973 stmf_teardown_dbuf(scsi_task_t *task, stmf_data_buf_t *dbuf)
3975 3974 {
3976 3975 stmf_i_scsi_task_t *itask =
3977 3976 (stmf_i_scsi_task_t *)task->task_stmf_private;
3978 3977 stmf_local_port_t *lport = task->task_lport;
3979 3978
3980 3979 ASSERT(task->task_additional_flags & TASK_AF_ACCEPT_LU_DBUF);
3981 3980 ASSERT(lport->lport_ds->ds_teardown_dbuf != NULL);
3982 3981 ASSERT(dbuf->db_flags & DB_LU_DATA_BUF);
3983 3982
3984 3983 itask->itask_allocated_buf_map &= ~(1 << dbuf->db_handle);
3985 3984 task->task_cur_nbufs--;
3986 3985 lport->lport_ds->ds_teardown_dbuf(lport->lport_ds, dbuf);
3987 3986 }
3988 3987
3989 3988 void
3990 3989 stmf_free_dbuf(scsi_task_t *task, stmf_data_buf_t *dbuf)
3991 3990 {
3992 3991 stmf_i_scsi_task_t *itask =
3993 3992 (stmf_i_scsi_task_t *)task->task_stmf_private;
3994 3993 stmf_local_port_t *lport = task->task_lport;
3995 3994
3996 3995 itask->itask_allocated_buf_map &= ~(1 << dbuf->db_handle);
3997 3996 task->task_cur_nbufs--;
3998 3997 lport->lport_ds->ds_free_data_buf(lport->lport_ds, dbuf);
3999 3998 }
4000 3999
4001 4000 stmf_data_buf_t *
4002 4001 stmf_handle_to_buf(scsi_task_t *task, uint8_t h)
4003 4002 {
4004 4003 stmf_i_scsi_task_t *itask;
4005 4004
4006 4005 itask = (stmf_i_scsi_task_t *)task->task_stmf_private;
4007 4006 if (h > 3)
4008 4007 return (NULL);
4009 4008 return (itask->itask_dbufs[h]);
4010 4009 }
4011 4010
4012 4011 /* ARGSUSED */
4013 4012 struct scsi_task *
4014 4013 stmf_task_alloc(struct stmf_local_port *lport, stmf_scsi_session_t *ss,
4015 4014 uint8_t *lun, uint16_t cdb_length_in, uint16_t ext_id)
4016 4015 {
4017 4016 stmf_lu_t *lu;
4018 4017 stmf_i_scsi_session_t *iss;
4019 4018 stmf_i_lu_t *ilu;
4020 4019 stmf_i_scsi_task_t *itask;
4021 4020 stmf_i_scsi_task_t **ppitask;
4022 4021 scsi_task_t *task;
4023 4022 uint8_t *l;
4024 4023 stmf_lun_map_ent_t *lun_map_ent;
4025 4024 uint16_t cdb_length;
4026 4025 uint16_t luNbr;
4027 4026 uint8_t new_task = 0;
4028 4027
4029 4028 /*
4030 4029 * We allocate 7 extra bytes for CDB to provide a cdb pointer which
4031 4030 * is guaranteed to be 8 byte aligned. Some LU providers like OSD
4032 4031 * depend upon this alignment.
4033 4032 */
4034 4033 if (cdb_length_in >= 16)
4035 4034 cdb_length = cdb_length_in + 7;
4036 4035 else
4037 4036 cdb_length = 16 + 7;
4038 4037 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private;
4039 4038 luNbr = ((uint16_t)lun[1] | (((uint16_t)(lun[0] & 0x3F)) << 8));
4040 4039 rw_enter(iss->iss_lockp, RW_READER);
4041 4040 lun_map_ent =
4042 4041 (stmf_lun_map_ent_t *)stmf_get_ent_from_map(iss->iss_sm, luNbr);
4043 4042 if (!lun_map_ent) {
4044 4043 lu = dlun0;
4045 4044 } else {
4046 4045 lu = lun_map_ent->ent_lu;
4047 4046 }
4048 4047 ilu = lu->lu_stmf_private;
4049 4048 if (ilu->ilu_flags & ILU_RESET_ACTIVE) {
4050 4049 rw_exit(iss->iss_lockp);
4051 4050 return (NULL);
4052 4051 }
4053 4052 ASSERT(lu == dlun0 || (ilu->ilu_state != STMF_STATE_OFFLINING &&
4054 4053 ilu->ilu_state != STMF_STATE_OFFLINE));
4055 4054 do {
4056 4055 if (ilu->ilu_free_tasks == NULL) {
4057 4056 new_task = 1;
4058 4057 break;
4059 4058 }
4060 4059 mutex_enter(&ilu->ilu_task_lock);
4061 4060 for (ppitask = &ilu->ilu_free_tasks; (*ppitask != NULL) &&
4062 4061 ((*ppitask)->itask_cdb_buf_size < cdb_length);
4063 4062 ppitask = &((*ppitask)->itask_lu_free_next))
4064 4063 ;
4065 4064 if (*ppitask) {
4066 4065 itask = *ppitask;
4067 4066 *ppitask = (*ppitask)->itask_lu_free_next;
4068 4067 ilu->ilu_ntasks_free--;
4069 4068 if (ilu->ilu_ntasks_free < ilu->ilu_ntasks_min_free)
4070 4069 ilu->ilu_ntasks_min_free = ilu->ilu_ntasks_free;
4071 4070 } else {
4072 4071 new_task = 1;
4073 4072 }
4074 4073 mutex_exit(&ilu->ilu_task_lock);
4075 4074 /* CONSTCOND */
4076 4075 } while (0);
4077 4076
4078 4077 if (!new_task) {
4079 4078 /*
4080 4079 * Save the task_cdb pointer and zero per cmd fields.
4081 4080 * We know the task_cdb_length is large enough by task
4082 4081 * selection process above.
4083 4082 */
4084 4083 uint8_t *save_cdb;
4085 4084 uintptr_t t_start, t_end;
4086 4085
4087 4086 task = itask->itask_task;
4088 4087 save_cdb = task->task_cdb; /* save */
4089 4088 t_start = (uintptr_t)&task->task_flags;
4090 4089 t_end = (uintptr_t)&task->task_extended_cmd;
4091 4090 bzero((void *)t_start, (size_t)(t_end - t_start));
4092 4091 task->task_cdb = save_cdb; /* restore */
4093 4092 itask->itask_ncmds = 0;
4094 4093 } else {
4095 4094 task = (scsi_task_t *)stmf_alloc(STMF_STRUCT_SCSI_TASK,
4096 4095 cdb_length, AF_FORCE_NOSLEEP);
4097 4096 if (task == NULL) {
4098 4097 rw_exit(iss->iss_lockp);
4099 4098 return (NULL);
4100 4099 }
4101 4100 task->task_lu = lu;
4102 4101 l = task->task_lun_no;
4103 4102 l[0] = lun[0];
4104 4103 l[1] = lun[1];
4105 4104 l[2] = lun[2];
4106 4105 l[3] = lun[3];
4107 4106 l[4] = lun[4];
4108 4107 l[5] = lun[5];
4109 4108 l[6] = lun[6];
4110 4109 l[7] = lun[7];
4111 4110 task->task_cdb = (uint8_t *)task->task_port_private;
4112 4111 if ((ulong_t)(task->task_cdb) & 7ul) {
4113 4112 task->task_cdb = (uint8_t *)(((ulong_t)
4114 4113 (task->task_cdb) + 7ul) & ~(7ul));
4115 4114 }
4116 4115 itask = (stmf_i_scsi_task_t *)task->task_stmf_private;
4117 4116 itask->itask_cdb_buf_size = cdb_length;
4118 4117 mutex_init(&itask->itask_audit_mutex, NULL, MUTEX_DRIVER, NULL);
4119 4118 }
4120 4119 task->task_session = ss;
4121 4120 task->task_lport = lport;
4122 4121 task->task_cdb_length = cdb_length_in;
4123 4122 itask->itask_flags = ITASK_IN_TRANSITION;
4124 4123 itask->itask_waitq_time = 0;
4125 4124 itask->itask_lu_read_time = itask->itask_lu_write_time = 0;
4126 4125 itask->itask_lport_read_time = itask->itask_lport_write_time = 0;
4127 4126 itask->itask_read_xfer = itask->itask_write_xfer = 0;
4128 4127 itask->itask_audit_index = 0;
4129 4128
4130 4129 if (new_task) {
4131 4130 if (lu->lu_task_alloc(task) != STMF_SUCCESS) {
4132 4131 rw_exit(iss->iss_lockp);
4133 4132 stmf_free(task);
4134 4133 return (NULL);
4135 4134 }
4136 4135 mutex_enter(&ilu->ilu_task_lock);
4137 4136 if (ilu->ilu_flags & ILU_RESET_ACTIVE) {
4138 4137 mutex_exit(&ilu->ilu_task_lock);
4139 4138 rw_exit(iss->iss_lockp);
4140 4139 stmf_free(task);
4141 4140 return (NULL);
4142 4141 }
4143 4142 itask->itask_lu_next = ilu->ilu_tasks;
4144 4143 if (ilu->ilu_tasks)
4145 4144 ilu->ilu_tasks->itask_lu_prev = itask;
4146 4145 ilu->ilu_tasks = itask;
4147 4146 /* kmem_zalloc automatically makes itask->itask_lu_prev NULL */
4148 4147 ilu->ilu_ntasks++;
4149 4148 mutex_exit(&ilu->ilu_task_lock);
4150 4149 }
4151 4150
4152 4151 itask->itask_ilu_task_cntr = ilu->ilu_cur_task_cntr;
4153 4152 atomic_inc_32(itask->itask_ilu_task_cntr);
4154 4153 itask->itask_start_time = ddi_get_lbolt();
4155 4154
4156 4155 if ((lun_map_ent != NULL) && ((itask->itask_itl_datap =
4157 4156 lun_map_ent->ent_itl_datap) != NULL)) {
4158 4157 atomic_inc_32(&itask->itask_itl_datap->itl_counter);
4159 4158 task->task_lu_itl_handle = itask->itask_itl_datap->itl_handle;
4160 4159 } else {
4161 4160 itask->itask_itl_datap = NULL;
4162 4161 task->task_lu_itl_handle = NULL;
4163 4162 }
4164 4163
4165 4164 rw_exit(iss->iss_lockp);
4166 4165 return (task);
4167 4166 }
4168 4167
4169 4168 static void
4170 4169 stmf_task_lu_free(scsi_task_t *task, stmf_i_scsi_session_t *iss)
4171 4170 {
4172 4171 stmf_i_scsi_task_t *itask =
4173 4172 (stmf_i_scsi_task_t *)task->task_stmf_private;
4174 4173 stmf_i_lu_t *ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private;
4175 4174
4176 4175 ASSERT(rw_lock_held(iss->iss_lockp));
4177 4176 itask->itask_flags = ITASK_IN_FREE_LIST;
4178 4177 itask->itask_proxy_msg_id = 0;
4179 4178 mutex_enter(&ilu->ilu_task_lock);
4180 4179 itask->itask_lu_free_next = ilu->ilu_free_tasks;
4181 4180 ilu->ilu_free_tasks = itask;
4182 4181 ilu->ilu_ntasks_free++;
4183 4182 if (ilu->ilu_ntasks == ilu->ilu_ntasks_free)
4184 4183 cv_signal(&ilu->ilu_offline_pending_cv);
4185 4184 mutex_exit(&ilu->ilu_task_lock);
4186 4185 atomic_dec_32(itask->itask_ilu_task_cntr);
4187 4186 }
4188 4187
4189 4188 void
4190 4189 stmf_task_lu_check_freelist(stmf_i_lu_t *ilu)
4191 4190 {
4192 4191 uint32_t num_to_release, ndx;
4193 4192 stmf_i_scsi_task_t *itask;
4194 4193 stmf_lu_t *lu = ilu->ilu_lu;
4195 4194
4196 4195 ASSERT(ilu->ilu_ntasks_min_free <= ilu->ilu_ntasks_free);
4197 4196
4198 4197 /* free half of the minimal free of the free tasks */
4199 4198 num_to_release = (ilu->ilu_ntasks_min_free + 1) / 2;
4200 4199 if (!num_to_release) {
4201 4200 return;
4202 4201 }
4203 4202 for (ndx = 0; ndx < num_to_release; ndx++) {
4204 4203 mutex_enter(&ilu->ilu_task_lock);
4205 4204 itask = ilu->ilu_free_tasks;
4206 4205 if (itask == NULL) {
4207 4206 mutex_exit(&ilu->ilu_task_lock);
4208 4207 break;
4209 4208 }
4210 4209 ilu->ilu_free_tasks = itask->itask_lu_free_next;
4211 4210 ilu->ilu_ntasks_free--;
4212 4211 mutex_exit(&ilu->ilu_task_lock);
4213 4212
4214 4213 lu->lu_task_free(itask->itask_task);
4215 4214 mutex_enter(&ilu->ilu_task_lock);
4216 4215 if (itask->itask_lu_next)
4217 4216 itask->itask_lu_next->itask_lu_prev =
4218 4217 itask->itask_lu_prev;
4219 4218 if (itask->itask_lu_prev)
4220 4219 itask->itask_lu_prev->itask_lu_next =
4221 4220 itask->itask_lu_next;
4222 4221 else
4223 4222 ilu->ilu_tasks = itask->itask_lu_next;
4224 4223
4225 4224 ilu->ilu_ntasks--;
4226 4225 mutex_exit(&ilu->ilu_task_lock);
4227 4226 stmf_free(itask->itask_task);
4228 4227 }
4229 4228 }
4230 4229
4231 4230 /*
4232 4231 * Called with stmf_lock held
4233 4232 */
4234 4233 void
4235 4234 stmf_check_freetask()
4236 4235 {
4237 4236 stmf_i_lu_t *ilu;
4238 4237 clock_t endtime = ddi_get_lbolt() + drv_usectohz(10000);
4239 4238
4240 4239 /* stmf_svc_ilu_draining may get changed after stmf_lock is released */
4241 4240 while ((ilu = stmf_state.stmf_svc_ilu_draining) != NULL) {
4242 4241 stmf_state.stmf_svc_ilu_draining = ilu->ilu_next;
4243 4242 if (!ilu->ilu_ntasks_min_free) {
4244 4243 ilu->ilu_ntasks_min_free = ilu->ilu_ntasks_free;
4245 4244 continue;
4246 4245 }
4247 4246 ilu->ilu_flags |= ILU_STALL_DEREGISTER;
4248 4247 mutex_exit(&stmf_state.stmf_lock);
4249 4248 stmf_task_lu_check_freelist(ilu);
4250 4249 /*
4251 4250 * we do not care about the accuracy of
4252 4251 * ilu_ntasks_min_free, so we don't lock here
4253 4252 */
4254 4253 ilu->ilu_ntasks_min_free = ilu->ilu_ntasks_free;
4255 4254 mutex_enter(&stmf_state.stmf_lock);
4256 4255 ilu->ilu_flags &= ~ILU_STALL_DEREGISTER;
4257 4256 cv_broadcast(&stmf_state.stmf_cv);
4258 4257 if (ddi_get_lbolt() >= endtime)
4259 4258 break;
4260 4259 }
4261 4260 }
4262 4261
4263 4262 void
4264 4263 stmf_do_ilu_timeouts(stmf_i_lu_t *ilu)
4265 4264 {
4266 4265 clock_t l = ddi_get_lbolt();
4267 4266 clock_t ps = drv_usectohz(1000000);
4268 4267 stmf_i_scsi_task_t *itask;
4269 4268 scsi_task_t *task;
4270 4269 uint32_t to;
4271 4270
4272 4271 mutex_enter(&ilu->ilu_task_lock);
4273 4272 for (itask = ilu->ilu_tasks; itask != NULL;
4274 4273 itask = itask->itask_lu_next) {
4275 4274 if (itask->itask_flags & (ITASK_IN_FREE_LIST |
4276 4275 ITASK_BEING_ABORTED)) {
4277 4276 continue;
4278 4277 }
4279 4278 task = itask->itask_task;
4280 4279 if (task->task_timeout == 0)
4281 4280 to = stmf_default_task_timeout;
4282 4281 else
4283 4282 to = task->task_timeout;
4284 4283 if ((itask->itask_start_time + (to * ps)) > l)
4285 4284 continue;
4286 4285 stmf_abort(STMF_QUEUE_TASK_ABORT, task,
4287 4286 STMF_TIMEOUT, NULL);
4288 4287 }
4289 4288 mutex_exit(&ilu->ilu_task_lock);
4290 4289 }
4291 4290
4292 4291 /*
4293 4292 * Called with stmf_lock held
4294 4293 */
4295 4294 void
4296 4295 stmf_check_ilu_timing()
4297 4296 {
4298 4297 stmf_i_lu_t *ilu;
4299 4298 clock_t endtime = ddi_get_lbolt() + drv_usectohz(10000);
4300 4299
4301 4300 /* stmf_svc_ilu_timing may get changed after stmf_lock is released */
4302 4301 while ((ilu = stmf_state.stmf_svc_ilu_timing) != NULL) {
4303 4302 stmf_state.stmf_svc_ilu_timing = ilu->ilu_next;
4304 4303 if (ilu->ilu_cur_task_cntr == (&ilu->ilu_task_cntr1)) {
4305 4304 if (ilu->ilu_task_cntr2 == 0) {
4306 4305 ilu->ilu_cur_task_cntr = &ilu->ilu_task_cntr2;
4307 4306 continue;
4308 4307 }
4309 4308 } else {
4310 4309 if (ilu->ilu_task_cntr1 == 0) {
4311 4310 ilu->ilu_cur_task_cntr = &ilu->ilu_task_cntr1;
4312 4311 continue;
4313 4312 }
4314 4313 }
4315 4314 /*
4316 4315 * If we are here then it means that there is some slowdown
4317 4316 * in tasks on this lu. We need to check.
4318 4317 */
4319 4318 ilu->ilu_flags |= ILU_STALL_DEREGISTER;
4320 4319 mutex_exit(&stmf_state.stmf_lock);
4321 4320 stmf_do_ilu_timeouts(ilu);
4322 4321 mutex_enter(&stmf_state.stmf_lock);
4323 4322 ilu->ilu_flags &= ~ILU_STALL_DEREGISTER;
4324 4323 cv_broadcast(&stmf_state.stmf_cv);
4325 4324 if (ddi_get_lbolt() >= endtime)
4326 4325 break;
4327 4326 }
4328 4327 }
4329 4328
4330 4329 /*
4331 4330 * Kills all tasks on a lu except tm_task
4332 4331 */
4333 4332 void
4334 4333 stmf_task_lu_killall(stmf_lu_t *lu, scsi_task_t *tm_task, stmf_status_t s)
4335 4334 {
4336 4335 stmf_i_lu_t *ilu = (stmf_i_lu_t *)lu->lu_stmf_private;
4337 4336 stmf_i_scsi_task_t *itask;
4338 4337
4339 4338 mutex_enter(&ilu->ilu_task_lock);
4340 4339
4341 4340 for (itask = ilu->ilu_tasks; itask != NULL;
4342 4341 itask = itask->itask_lu_next) {
4343 4342 if (itask->itask_flags & ITASK_IN_FREE_LIST)
4344 4343 continue;
4345 4344 if (itask->itask_task == tm_task)
4346 4345 continue;
4347 4346 stmf_abort(STMF_QUEUE_TASK_ABORT, itask->itask_task, s, NULL);
4348 4347 }
4349 4348 mutex_exit(&ilu->ilu_task_lock);
4350 4349 }
4351 4350
4352 4351 void
4353 4352 stmf_free_task_bufs(stmf_i_scsi_task_t *itask, stmf_local_port_t *lport)
4354 4353 {
4355 4354 int i;
4356 4355 uint8_t map;
4357 4356
4358 4357 if ((map = itask->itask_allocated_buf_map) == 0)
4359 4358 return;
4360 4359 for (i = 0; i < 4; i++) {
4361 4360 if (map & 1) {
4362 4361 stmf_data_buf_t *dbuf;
4363 4362
4364 4363 dbuf = itask->itask_dbufs[i];
4365 4364 if (dbuf->db_xfer_start_timestamp) {
4366 4365 stmf_lport_xfer_done(itask, dbuf);
4367 4366 }
4368 4367 if (dbuf->db_flags & DB_LU_DATA_BUF) {
4369 4368 /*
4370 4369 * LU needs to clean up buffer.
4371 4370 * LU is required to free the buffer
4372 4371 * in the xfer_done handler.
4373 4372 */
4374 4373 scsi_task_t *task = itask->itask_task;
4375 4374 stmf_lu_t *lu = task->task_lu;
4376 4375
4377 4376 lu->lu_dbuf_free(task, dbuf);
4378 4377 ASSERT(((itask->itask_allocated_buf_map>>i)
4379 4378 & 1) == 0); /* must be gone */
4380 4379 } else {
4381 4380 ASSERT(dbuf->db_lu_private == NULL);
4382 4381 dbuf->db_lu_private = NULL;
4383 4382 lport->lport_ds->ds_free_data_buf(
4384 4383 lport->lport_ds, dbuf);
4385 4384 }
4386 4385 }
4387 4386 map >>= 1;
4388 4387 }
4389 4388 itask->itask_allocated_buf_map = 0;
4390 4389 }
4391 4390
4392 4391 void
4393 4392 stmf_task_free(scsi_task_t *task)
4394 4393 {
4395 4394 stmf_local_port_t *lport = task->task_lport;
4396 4395 stmf_i_scsi_task_t *itask = (stmf_i_scsi_task_t *)
4397 4396 task->task_stmf_private;
4398 4397 stmf_i_scsi_session_t *iss = (stmf_i_scsi_session_t *)
4399 4398 task->task_session->ss_stmf_private;
4400 4399
4401 4400 stmf_task_audit(itask, TE_TASK_FREE, CMD_OR_IOF_NA, NULL);
4402 4401
4403 4402 stmf_free_task_bufs(itask, lport);
4404 4403 stmf_itl_task_done(itask);
4405 4404 DTRACE_PROBE2(stmf__task__end, scsi_task_t *, task,
4406 4405 hrtime_t,
4407 4406 itask->itask_done_timestamp - itask->itask_start_timestamp);
4408 4407 if (itask->itask_itl_datap) {
4409 4408 if (atomic_dec_32_nv(&itask->itask_itl_datap->itl_counter) ==
4410 4409 0) {
4411 4410 stmf_release_itl_handle(task->task_lu,
4412 4411 itask->itask_itl_datap);
4413 4412 }
4414 4413 }
4415 4414
4416 4415 rw_enter(iss->iss_lockp, RW_READER);
4417 4416 lport->lport_task_free(task);
4418 4417 if (itask->itask_worker) {
4419 4418 atomic_dec_32(&stmf_cur_ntasks);
4420 4419 atomic_dec_32(&itask->itask_worker->worker_ref_count);
4421 4420 }
4422 4421 /*
4423 4422 * After calling stmf_task_lu_free, the task pointer can no longer
4424 4423 * be trusted.
4425 4424 */
4426 4425 stmf_task_lu_free(task, iss);
4427 4426 rw_exit(iss->iss_lockp);
4428 4427 }
4429 4428
4430 4429 void
4431 4430 stmf_post_task(scsi_task_t *task, stmf_data_buf_t *dbuf)
4432 4431 {
4433 4432 stmf_i_scsi_task_t *itask = (stmf_i_scsi_task_t *)
4434 4433 task->task_stmf_private;
4435 4434 stmf_i_lu_t *ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private;
4436 4435 int nv;
4437 4436 uint32_t old, new;
4438 4437 uint32_t ct;
4439 4438 stmf_worker_t *w, *w1;
4440 4439 uint8_t tm;
4441 4440
4442 4441 if (task->task_max_nbufs > 4)
4443 4442 task->task_max_nbufs = 4;
4444 4443 task->task_cur_nbufs = 0;
4445 4444 /* Latest value of currently running tasks */
4446 4445 ct = atomic_inc_32_nv(&stmf_cur_ntasks);
4447 4446
4448 4447 /* Select the next worker using round robin */
4449 4448 nv = (int)atomic_inc_32_nv((uint32_t *)&stmf_worker_sel_counter);
4450 4449 if (nv >= stmf_nworkers_accepting_cmds) {
4451 4450 int s = nv;
4452 4451 do {
4453 4452 nv -= stmf_nworkers_accepting_cmds;
4454 4453 } while (nv >= stmf_nworkers_accepting_cmds);
4455 4454 if (nv < 0)
4456 4455 nv = 0;
4457 4456 /* Its ok if this cas fails */
4458 4457 (void) atomic_cas_32((uint32_t *)&stmf_worker_sel_counter,
4459 4458 s, nv);
4460 4459 }
4461 4460 w = &stmf_workers[nv];
4462 4461
4463 4462 /*
4464 4463 * A worker can be pinned by interrupt. So select the next one
4465 4464 * if it has lower load.
4466 4465 */
4467 4466 if ((nv + 1) >= stmf_nworkers_accepting_cmds) {
4468 4467 w1 = stmf_workers;
4469 4468 } else {
4470 4469 w1 = &stmf_workers[nv + 1];
4471 4470 }
4472 4471 if (w1->worker_queue_depth < w->worker_queue_depth)
4473 4472 w = w1;
4474 4473
4475 4474 mutex_enter(&w->worker_lock);
4476 4475 if (((w->worker_flags & STMF_WORKER_STARTED) == 0) ||
4477 4476 (w->worker_flags & STMF_WORKER_TERMINATE)) {
4478 4477 /*
4479 4478 * Maybe we are in the middle of a change. Just go to
4480 4479 * the 1st worker.
4481 4480 */
4482 4481 mutex_exit(&w->worker_lock);
4483 4482 w = stmf_workers;
4484 4483 mutex_enter(&w->worker_lock);
4485 4484 }
4486 4485 itask->itask_worker = w;
4487 4486 /*
4488 4487 * Track max system load inside the worker as we already have the
4489 4488 * worker lock (no point implementing another lock). The service
4490 4489 * thread will do the comparisons and figure out the max overall
4491 4490 * system load.
4492 4491 */
4493 4492 if (w->worker_max_sys_qdepth_pu < ct)
4494 4493 w->worker_max_sys_qdepth_pu = ct;
4495 4494
4496 4495 do {
4497 4496 old = new = itask->itask_flags;
4498 4497 new |= ITASK_KNOWN_TO_TGT_PORT | ITASK_IN_WORKER_QUEUE;
4499 4498 if (task->task_mgmt_function) {
4500 4499 tm = task->task_mgmt_function;
4501 4500 if ((tm == TM_TARGET_RESET) ||
4502 4501 (tm == TM_TARGET_COLD_RESET) ||
4503 4502 (tm == TM_TARGET_WARM_RESET)) {
4504 4503 new |= ITASK_DEFAULT_HANDLING;
4505 4504 }
4506 4505 } else if (task->task_cdb[0] == SCMD_REPORT_LUNS) {
4507 4506 new |= ITASK_DEFAULT_HANDLING;
4508 4507 }
4509 4508 new &= ~ITASK_IN_TRANSITION;
4510 4509 } while (atomic_cas_32(&itask->itask_flags, old, new) != old);
4511 4510
4512 4511 stmf_itl_task_start(itask);
4513 4512
4514 4513 itask->itask_worker_next = NULL;
4515 4514 if (w->worker_task_tail) {
4516 4515 w->worker_task_tail->itask_worker_next = itask;
4517 4516 } else {
4518 4517 w->worker_task_head = itask;
4519 4518 }
4520 4519 w->worker_task_tail = itask;
4521 4520 if (++(w->worker_queue_depth) > w->worker_max_qdepth_pu) {
4522 4521 w->worker_max_qdepth_pu = w->worker_queue_depth;
4523 4522 }
4524 4523 /* Measure task waitq time */
4525 4524 itask->itask_waitq_enter_timestamp = gethrtime();
4526 4525 atomic_inc_32(&w->worker_ref_count);
4527 4526 itask->itask_cmd_stack[0] = ITASK_CMD_NEW_TASK;
4528 4527 itask->itask_ncmds = 1;
4529 4528 stmf_task_audit(itask, TE_TASK_START, CMD_OR_IOF_NA, dbuf);
4530 4529 if (dbuf) {
4531 4530 itask->itask_allocated_buf_map = 1;
4532 4531 itask->itask_dbufs[0] = dbuf;
4533 4532 dbuf->db_handle = 0;
4534 4533 } else {
4535 4534 itask->itask_allocated_buf_map = 0;
4536 4535 itask->itask_dbufs[0] = NULL;
4537 4536 }
4538 4537
4539 4538 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0) {
4540 4539 w->worker_signal_timestamp = gethrtime();
4541 4540 DTRACE_PROBE2(worker__signal, stmf_worker_t *, w,
4542 4541 scsi_task_t *, task);
4543 4542 cv_signal(&w->worker_cv);
4544 4543 }
4545 4544 mutex_exit(&w->worker_lock);
4546 4545
4547 4546 /*
4548 4547 * This can only happen if during stmf_task_alloc(), ILU_RESET_ACTIVE
4549 4548 * was set between checking of ILU_RESET_ACTIVE and clearing of the
4550 4549 * ITASK_IN_FREE_LIST flag. Take care of these "sneaked-in" tasks here.
4551 4550 */
4552 4551 if (ilu->ilu_flags & ILU_RESET_ACTIVE) {
4553 4552 stmf_abort(STMF_QUEUE_TASK_ABORT, task, STMF_ABORTED, NULL);
4554 4553 }
4555 4554 }
4556 4555
4557 4556 static void
4558 4557 stmf_task_audit(stmf_i_scsi_task_t *itask,
4559 4558 task_audit_event_t te, uint32_t cmd_or_iof, stmf_data_buf_t *dbuf)
4560 4559 {
4561 4560 stmf_task_audit_rec_t *ar;
4562 4561
4563 4562 mutex_enter(&itask->itask_audit_mutex);
4564 4563 ar = &itask->itask_audit_records[itask->itask_audit_index++];
4565 4564 itask->itask_audit_index &= (ITASK_TASK_AUDIT_DEPTH - 1);
4566 4565 ar->ta_event = te;
4567 4566 ar->ta_cmd_or_iof = cmd_or_iof;
4568 4567 ar->ta_itask_flags = itask->itask_flags;
4569 4568 ar->ta_dbuf = dbuf;
4570 4569 gethrestime(&ar->ta_timestamp);
4571 4570 mutex_exit(&itask->itask_audit_mutex);
4572 4571 }
4573 4572
4574 4573
4575 4574 /*
4576 4575 * ++++++++++++++ ABORT LOGIC ++++++++++++++++++++
4577 4576 * Once ITASK_BEING_ABORTED is set, ITASK_KNOWN_TO_LU can be reset already
4578 4577 * i.e. before ITASK_BEING_ABORTED being set. But if it was not, it cannot
4579 4578 * be reset until the LU explicitly calls stmf_task_lu_aborted(). Of course
4580 4579 * the LU will make this call only if we call the LU's abort entry point.
4581 4580 * we will only call that entry point if ITASK_KNOWN_TO_LU was set.
4582 4581 *
4583 4582 * Same logic applies for the port.
4584 4583 *
4585 4584 * Also ITASK_BEING_ABORTED will not be allowed to set if both KNOWN_TO_LU
4586 4585 * and KNOWN_TO_TGT_PORT are reset.
4587 4586 *
4588 4587 * +++++++++++++++++++++++++++++++++++++++++++++++
4589 4588 */
4590 4589
4591 4590 stmf_status_t
4592 4591 stmf_xfer_data(scsi_task_t *task, stmf_data_buf_t *dbuf, uint32_t ioflags)
4593 4592 {
4594 4593 stmf_status_t ret = STMF_SUCCESS;
4595 4594
4596 4595 stmf_i_scsi_task_t *itask =
4597 4596 (stmf_i_scsi_task_t *)task->task_stmf_private;
4598 4597
4599 4598 stmf_task_audit(itask, TE_XFER_START, ioflags, dbuf);
4600 4599
4601 4600 if (ioflags & STMF_IOF_LU_DONE) {
4602 4601 uint32_t new, old;
4603 4602 do {
4604 4603 new = old = itask->itask_flags;
4605 4604 if (new & ITASK_BEING_ABORTED)
4606 4605 return (STMF_ABORTED);
4607 4606 new &= ~ITASK_KNOWN_TO_LU;
4608 4607 } while (atomic_cas_32(&itask->itask_flags, old, new) != old);
4609 4608 }
4610 4609 if (itask->itask_flags & ITASK_BEING_ABORTED)
4611 4610 return (STMF_ABORTED);
4612 4611 #ifdef DEBUG
4613 4612 if (!(ioflags & STMF_IOF_STATS_ONLY) && stmf_drop_buf_counter > 0) {
4614 4613 if (atomic_dec_32_nv(&stmf_drop_buf_counter) == 1)
4615 4614 return (STMF_SUCCESS);
4616 4615 }
4617 4616 #endif
4618 4617
4619 4618 stmf_update_kstat_lu_io(task, dbuf);
4620 4619 stmf_update_kstat_lport_io(task, dbuf);
4621 4620 stmf_lport_xfer_start(itask, dbuf);
4622 4621 if (ioflags & STMF_IOF_STATS_ONLY) {
4623 4622 stmf_lport_xfer_done(itask, dbuf);
4624 4623 return (STMF_SUCCESS);
4625 4624 }
4626 4625
4627 4626 dbuf->db_flags |= DB_LPORT_XFER_ACTIVE;
4628 4627 ret = task->task_lport->lport_xfer_data(task, dbuf, ioflags);
4629 4628
4630 4629 /*
4631 4630 * Port provider may have already called the buffer callback in
4632 4631 * which case dbuf->db_xfer_start_timestamp will be 0.
4633 4632 */
4634 4633 if (ret != STMF_SUCCESS) {
4635 4634 dbuf->db_flags &= ~DB_LPORT_XFER_ACTIVE;
4636 4635 if (dbuf->db_xfer_start_timestamp != 0)
4637 4636 stmf_lport_xfer_done(itask, dbuf);
4638 4637 }
4639 4638
4640 4639 return (ret);
4641 4640 }
4642 4641
4643 4642 void
4644 4643 stmf_data_xfer_done(scsi_task_t *task, stmf_data_buf_t *dbuf, uint32_t iof)
4645 4644 {
4646 4645 stmf_i_scsi_task_t *itask =
4647 4646 (stmf_i_scsi_task_t *)task->task_stmf_private;
4648 4647 stmf_i_local_port_t *ilport;
4649 4648 stmf_worker_t *w = itask->itask_worker;
4650 4649 uint32_t new, old;
4651 4650 uint8_t update_queue_flags, free_it, queue_it;
4652 4651
4653 4652 stmf_lport_xfer_done(itask, dbuf);
4654 4653
4655 4654 stmf_task_audit(itask, TE_XFER_DONE, iof, dbuf);
4656 4655
4657 4656 /* Guard against unexpected completions from the lport */
4658 4657 if (dbuf->db_flags & DB_LPORT_XFER_ACTIVE) {
4659 4658 dbuf->db_flags &= ~DB_LPORT_XFER_ACTIVE;
4660 4659 } else {
4661 4660 /*
4662 4661 * This should never happen.
4663 4662 */
4664 4663 ilport = task->task_lport->lport_stmf_private;
4665 4664 ilport->ilport_unexpected_comp++;
4666 4665 cmn_err(CE_PANIC, "Unexpected xfer completion task %p dbuf %p",
4667 4666 (void *)task, (void *)dbuf);
4668 4667 return;
4669 4668 }
4670 4669
4671 4670 mutex_enter(&w->worker_lock);
4672 4671 do {
4673 4672 new = old = itask->itask_flags;
4674 4673 if (old & ITASK_BEING_ABORTED) {
4675 4674 mutex_exit(&w->worker_lock);
4676 4675 return;
4677 4676 }
4678 4677 free_it = 0;
4679 4678 if (iof & STMF_IOF_LPORT_DONE) {
4680 4679 new &= ~ITASK_KNOWN_TO_TGT_PORT;
4681 4680 task->task_completion_status = dbuf->db_xfer_status;
4682 4681 free_it = 1;
4683 4682 }
4684 4683 /*
4685 4684 * If the task is known to LU then queue it. But if
4686 4685 * it is already queued (multiple completions) then
4687 4686 * just update the buffer information by grabbing the
4688 4687 * worker lock. If the task is not known to LU,
4689 4688 * completed/aborted, then see if we need to
4690 4689 * free this task.
4691 4690 */
4692 4691 if (old & ITASK_KNOWN_TO_LU) {
4693 4692 free_it = 0;
4694 4693 update_queue_flags = 1;
4695 4694 if (old & ITASK_IN_WORKER_QUEUE) {
4696 4695 queue_it = 0;
4697 4696 } else {
4698 4697 queue_it = 1;
4699 4698 new |= ITASK_IN_WORKER_QUEUE;
4700 4699 }
4701 4700 } else {
4702 4701 update_queue_flags = 0;
4703 4702 queue_it = 0;
4704 4703 }
4705 4704 } while (atomic_cas_32(&itask->itask_flags, old, new) != old);
4706 4705
4707 4706 if (update_queue_flags) {
4708 4707 uint8_t cmd = (dbuf->db_handle << 5) | ITASK_CMD_DATA_XFER_DONE;
4709 4708
4710 4709 ASSERT(itask->itask_ncmds < ITASK_MAX_NCMDS);
4711 4710 itask->itask_cmd_stack[itask->itask_ncmds++] = cmd;
4712 4711 if (queue_it) {
4713 4712 itask->itask_worker_next = NULL;
4714 4713 if (w->worker_task_tail) {
4715 4714 w->worker_task_tail->itask_worker_next = itask;
4716 4715 } else {
4717 4716 w->worker_task_head = itask;
4718 4717 }
4719 4718 w->worker_task_tail = itask;
4720 4719 /* Measure task waitq time */
4721 4720 itask->itask_waitq_enter_timestamp = gethrtime();
4722 4721 if (++(w->worker_queue_depth) >
4723 4722 w->worker_max_qdepth_pu) {
4724 4723 w->worker_max_qdepth_pu = w->worker_queue_depth;
4725 4724 }
4726 4725 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0)
4727 4726 cv_signal(&w->worker_cv);
4728 4727 }
4729 4728 }
4730 4729 mutex_exit(&w->worker_lock);
4731 4730
4732 4731 if (free_it) {
4733 4732 if ((itask->itask_flags & (ITASK_KNOWN_TO_LU |
4734 4733 ITASK_KNOWN_TO_TGT_PORT | ITASK_IN_WORKER_QUEUE |
4735 4734 ITASK_BEING_ABORTED)) == 0) {
4736 4735 stmf_task_free(task);
4737 4736 }
4738 4737 }
4739 4738 }
4740 4739
4741 4740 stmf_status_t
4742 4741 stmf_send_scsi_status(scsi_task_t *task, uint32_t ioflags)
4743 4742 {
4744 4743 DTRACE_PROBE1(scsi__send__status, scsi_task_t *, task);
4745 4744
4746 4745 stmf_i_scsi_task_t *itask =
4747 4746 (stmf_i_scsi_task_t *)task->task_stmf_private;
4748 4747
4749 4748 stmf_task_audit(itask, TE_SEND_STATUS, ioflags, NULL);
4750 4749
4751 4750 if (ioflags & STMF_IOF_LU_DONE) {
4752 4751 uint32_t new, old;
4753 4752 do {
4754 4753 new = old = itask->itask_flags;
4755 4754 if (new & ITASK_BEING_ABORTED)
4756 4755 return (STMF_ABORTED);
4757 4756 new &= ~ITASK_KNOWN_TO_LU;
4758 4757 } while (atomic_cas_32(&itask->itask_flags, old, new) != old);
4759 4758 }
4760 4759
4761 4760 if (!(itask->itask_flags & ITASK_KNOWN_TO_TGT_PORT)) {
4762 4761 return (STMF_SUCCESS);
4763 4762 }
4764 4763
4765 4764 if (itask->itask_flags & ITASK_BEING_ABORTED)
4766 4765 return (STMF_ABORTED);
4767 4766
4768 4767 if (task->task_additional_flags & TASK_AF_NO_EXPECTED_XFER_LENGTH) {
4769 4768 task->task_status_ctrl = 0;
4770 4769 task->task_resid = 0;
4771 4770 } else if (task->task_cmd_xfer_length >
4772 4771 task->task_expected_xfer_length) {
4773 4772 task->task_status_ctrl = TASK_SCTRL_OVER;
4774 4773 task->task_resid = task->task_cmd_xfer_length -
4775 4774 task->task_expected_xfer_length;
4776 4775 } else if (task->task_nbytes_transferred <
4777 4776 task->task_expected_xfer_length) {
4778 4777 task->task_status_ctrl = TASK_SCTRL_UNDER;
4779 4778 task->task_resid = task->task_expected_xfer_length -
4780 4779 task->task_nbytes_transferred;
4781 4780 } else {
4782 4781 task->task_status_ctrl = 0;
4783 4782 task->task_resid = 0;
4784 4783 }
4785 4784 return (task->task_lport->lport_send_status(task, ioflags));
4786 4785 }
4787 4786
4788 4787 void
4789 4788 stmf_send_status_done(scsi_task_t *task, stmf_status_t s, uint32_t iof)
4790 4789 {
4791 4790 stmf_i_scsi_task_t *itask =
4792 4791 (stmf_i_scsi_task_t *)task->task_stmf_private;
4793 4792 stmf_worker_t *w = itask->itask_worker;
4794 4793 uint32_t new, old;
4795 4794 uint8_t free_it, queue_it;
4796 4795
4797 4796 stmf_task_audit(itask, TE_SEND_STATUS_DONE, iof, NULL);
4798 4797
4799 4798 mutex_enter(&w->worker_lock);
4800 4799 do {
4801 4800 new = old = itask->itask_flags;
4802 4801 if (old & ITASK_BEING_ABORTED) {
4803 4802 mutex_exit(&w->worker_lock);
4804 4803 return;
4805 4804 }
4806 4805 free_it = 0;
4807 4806 if (iof & STMF_IOF_LPORT_DONE) {
4808 4807 new &= ~ITASK_KNOWN_TO_TGT_PORT;
4809 4808 free_it = 1;
4810 4809 }
4811 4810 /*
4812 4811 * If the task is known to LU then queue it. But if
4813 4812 * it is already queued (multiple completions) then
4814 4813 * just update the buffer information by grabbing the
4815 4814 * worker lock. If the task is not known to LU,
4816 4815 * completed/aborted, then see if we need to
4817 4816 * free this task.
4818 4817 */
4819 4818 if (old & ITASK_KNOWN_TO_LU) {
4820 4819 free_it = 0;
4821 4820 queue_it = 1;
4822 4821 if (old & ITASK_IN_WORKER_QUEUE) {
4823 4822 cmn_err(CE_PANIC, "status completion received"
4824 4823 " when task is already in worker queue "
4825 4824 " task = %p", (void *)task);
4826 4825 }
4827 4826 new |= ITASK_IN_WORKER_QUEUE;
4828 4827 } else {
4829 4828 queue_it = 0;
4830 4829 }
4831 4830 } while (atomic_cas_32(&itask->itask_flags, old, new) != old);
4832 4831 task->task_completion_status = s;
4833 4832
4834 4833
4835 4834 if (queue_it) {
4836 4835 ASSERT(itask->itask_ncmds < ITASK_MAX_NCMDS);
4837 4836 itask->itask_cmd_stack[itask->itask_ncmds++] =
4838 4837 ITASK_CMD_STATUS_DONE;
4839 4838 itask->itask_worker_next = NULL;
4840 4839 if (w->worker_task_tail) {
4841 4840 w->worker_task_tail->itask_worker_next = itask;
4842 4841 } else {
4843 4842 w->worker_task_head = itask;
4844 4843 }
4845 4844 w->worker_task_tail = itask;
4846 4845 /* Measure task waitq time */
4847 4846 itask->itask_waitq_enter_timestamp = gethrtime();
4848 4847 if (++(w->worker_queue_depth) > w->worker_max_qdepth_pu) {
4849 4848 w->worker_max_qdepth_pu = w->worker_queue_depth;
4850 4849 }
4851 4850 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0)
4852 4851 cv_signal(&w->worker_cv);
4853 4852 }
4854 4853 mutex_exit(&w->worker_lock);
4855 4854
4856 4855 if (free_it) {
4857 4856 if ((itask->itask_flags & (ITASK_KNOWN_TO_LU |
4858 4857 ITASK_KNOWN_TO_TGT_PORT | ITASK_IN_WORKER_QUEUE |
4859 4858 ITASK_BEING_ABORTED)) == 0) {
4860 4859 stmf_task_free(task);
4861 4860 } else {
4862 4861 cmn_err(CE_PANIC, "LU is done with the task but LPORT "
4863 4862 " is not done, itask %p itask_flags %x",
4864 4863 (void *)itask, itask->itask_flags);
4865 4864 }
4866 4865 }
4867 4866 }
4868 4867
4869 4868 void
4870 4869 stmf_task_lu_done(scsi_task_t *task)
4871 4870 {
4872 4871 stmf_i_scsi_task_t *itask =
4873 4872 (stmf_i_scsi_task_t *)task->task_stmf_private;
4874 4873 stmf_worker_t *w = itask->itask_worker;
4875 4874 uint32_t new, old;
4876 4875
4877 4876 mutex_enter(&w->worker_lock);
4878 4877 do {
4879 4878 new = old = itask->itask_flags;
4880 4879 if (old & ITASK_BEING_ABORTED) {
4881 4880 mutex_exit(&w->worker_lock);
4882 4881 return;
4883 4882 }
4884 4883 if (old & ITASK_IN_WORKER_QUEUE) {
4885 4884 cmn_err(CE_PANIC, "task_lu_done received"
4886 4885 " when task is in worker queue "
4887 4886 " task = %p", (void *)task);
4888 4887 }
4889 4888 new &= ~ITASK_KNOWN_TO_LU;
4890 4889 } while (atomic_cas_32(&itask->itask_flags, old, new) != old);
4891 4890
4892 4891 mutex_exit(&w->worker_lock);
4893 4892
4894 4893 if ((itask->itask_flags & (ITASK_KNOWN_TO_LU |
4895 4894 ITASK_KNOWN_TO_TGT_PORT | ITASK_IN_WORKER_QUEUE |
4896 4895 ITASK_BEING_ABORTED)) == 0) {
4897 4896 stmf_task_free(task);
4898 4897 } else {
4899 4898 cmn_err(CE_PANIC, "stmf_lu_done should be the last stage but "
4900 4899 " the task is still not done, task = %p", (void *)task);
4901 4900 }
4902 4901 }
4903 4902
4904 4903 void
4905 4904 stmf_queue_task_for_abort(scsi_task_t *task, stmf_status_t s)
4906 4905 {
4907 4906 stmf_i_scsi_task_t *itask =
4908 4907 (stmf_i_scsi_task_t *)task->task_stmf_private;
4909 4908 stmf_worker_t *w;
4910 4909 uint32_t old, new;
4911 4910
4912 4911 stmf_task_audit(itask, TE_TASK_ABORT, CMD_OR_IOF_NA, NULL);
4913 4912
4914 4913 do {
4915 4914 old = new = itask->itask_flags;
4916 4915 if ((old & ITASK_BEING_ABORTED) ||
4917 4916 ((old & (ITASK_KNOWN_TO_TGT_PORT |
4918 4917 ITASK_KNOWN_TO_LU)) == 0)) {
4919 4918 return;
4920 4919 }
4921 4920 new |= ITASK_BEING_ABORTED;
4922 4921 } while (atomic_cas_32(&itask->itask_flags, old, new) != old);
4923 4922 task->task_completion_status = s;
4924 4923 itask->itask_start_time = ddi_get_lbolt();
4925 4924
4926 4925 if (((w = itask->itask_worker) == NULL) ||
4927 4926 (itask->itask_flags & ITASK_IN_TRANSITION)) {
4928 4927 return;
4929 4928 }
4930 4929
4931 4930 /* Queue it and get out */
4932 4931 mutex_enter(&w->worker_lock);
4933 4932 if (itask->itask_flags & ITASK_IN_WORKER_QUEUE) {
4934 4933 mutex_exit(&w->worker_lock);
4935 4934 return;
4936 4935 }
4937 4936 atomic_or_32(&itask->itask_flags, ITASK_IN_WORKER_QUEUE);
4938 4937 itask->itask_worker_next = NULL;
4939 4938 if (w->worker_task_tail) {
4940 4939 w->worker_task_tail->itask_worker_next = itask;
4941 4940 } else {
4942 4941 w->worker_task_head = itask;
4943 4942 }
4944 4943 w->worker_task_tail = itask;
4945 4944 if (++(w->worker_queue_depth) > w->worker_max_qdepth_pu) {
4946 4945 w->worker_max_qdepth_pu = w->worker_queue_depth;
4947 4946 }
4948 4947 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0)
4949 4948 cv_signal(&w->worker_cv);
4950 4949 mutex_exit(&w->worker_lock);
4951 4950 }
4952 4951
4953 4952 void
4954 4953 stmf_abort(int abort_cmd, scsi_task_t *task, stmf_status_t s, void *arg)
4955 4954 {
4956 4955 stmf_i_scsi_task_t *itask = NULL;
4957 4956 uint32_t old, new, f, rf;
4958 4957
4959 4958 DTRACE_PROBE2(scsi__task__abort, scsi_task_t *, task,
4960 4959 stmf_status_t, s);
4961 4960
4962 4961 switch (abort_cmd) {
4963 4962 case STMF_QUEUE_ABORT_LU:
4964 4963 stmf_task_lu_killall((stmf_lu_t *)arg, task, s);
4965 4964 return;
4966 4965 case STMF_QUEUE_TASK_ABORT:
4967 4966 stmf_queue_task_for_abort(task, s);
4968 4967 return;
4969 4968 case STMF_REQUEUE_TASK_ABORT_LPORT:
4970 4969 rf = ITASK_TGT_PORT_ABORT_CALLED;
4971 4970 f = ITASK_KNOWN_TO_TGT_PORT;
4972 4971 break;
4973 4972 case STMF_REQUEUE_TASK_ABORT_LU:
4974 4973 rf = ITASK_LU_ABORT_CALLED;
4975 4974 f = ITASK_KNOWN_TO_LU;
4976 4975 break;
4977 4976 default:
4978 4977 return;
4979 4978 }
4980 4979 itask = (stmf_i_scsi_task_t *)task->task_stmf_private;
4981 4980 f |= ITASK_BEING_ABORTED | rf;
4982 4981 do {
4983 4982 old = new = itask->itask_flags;
4984 4983 if ((old & f) != f) {
4985 4984 return;
4986 4985 }
4987 4986 new &= ~rf;
4988 4987 } while (atomic_cas_32(&itask->itask_flags, old, new) != old);
4989 4988 }
4990 4989
4991 4990 void
4992 4991 stmf_task_lu_aborted(scsi_task_t *task, stmf_status_t s, uint32_t iof)
4993 4992 {
4994 4993 char info[STMF_CHANGE_INFO_LEN];
4995 4994 stmf_i_scsi_task_t *itask = TASK_TO_ITASK(task);
4996 4995 unsigned long long st;
4997 4996
4998 4997 stmf_task_audit(itask, TE_TASK_LU_ABORTED, iof, NULL);
4999 4998
5000 4999 st = s; /* gcc fix */
5001 5000 if ((s != STMF_ABORT_SUCCESS) && (s != STMF_NOT_FOUND)) {
5002 5001 (void) snprintf(info, sizeof (info),
5003 5002 "task %p, lu failed to abort ret=%llx", (void *)task, st);
5004 5003 } else if ((iof & STMF_IOF_LU_DONE) == 0) {
5005 5004 (void) snprintf(info, sizeof (info),
5006 5005 "Task aborted but LU is not finished, task ="
5007 5006 "%p, s=%llx, iof=%x", (void *)task, st, iof);
5008 5007 } else {
5009 5008 /*
5010 5009 * LU abort successfully
5011 5010 */
5012 5011 atomic_and_32(&itask->itask_flags, ~ITASK_KNOWN_TO_LU);
5013 5012 return;
5014 5013 }
5015 5014
5016 5015 stmf_abort_task_offline(task, 1, info);
5017 5016 }
5018 5017
5019 5018 void
5020 5019 stmf_task_lport_aborted(scsi_task_t *task, stmf_status_t s, uint32_t iof)
5021 5020 {
5022 5021 char info[STMF_CHANGE_INFO_LEN];
5023 5022 stmf_i_scsi_task_t *itask = TASK_TO_ITASK(task);
5024 5023 unsigned long long st;
5025 5024 uint32_t old, new;
5026 5025
5027 5026 stmf_task_audit(itask, TE_TASK_LPORT_ABORTED, iof, NULL);
5028 5027
5029 5028 st = s;
5030 5029 if ((s != STMF_ABORT_SUCCESS) && (s != STMF_NOT_FOUND)) {
5031 5030 (void) snprintf(info, sizeof (info),
5032 5031 "task %p, tgt port failed to abort ret=%llx", (void *)task,
5033 5032 st);
5034 5033 } else if ((iof & STMF_IOF_LPORT_DONE) == 0) {
5035 5034 (void) snprintf(info, sizeof (info),
5036 5035 "Task aborted but tgt port is not finished, "
5037 5036 "task=%p, s=%llx, iof=%x", (void *)task, st, iof);
5038 5037 } else {
5039 5038 /*
5040 5039 * LPORT abort successfully
5041 5040 */
5042 5041 do {
5043 5042 old = new = itask->itask_flags;
5044 5043 if (!(old & ITASK_KNOWN_TO_TGT_PORT))
5045 5044 return;
5046 5045 new &= ~ITASK_KNOWN_TO_TGT_PORT;
5047 5046 } while (atomic_cas_32(&itask->itask_flags, old, new) != old);
5048 5047 return;
5049 5048 }
5050 5049
5051 5050 stmf_abort_task_offline(task, 0, info);
5052 5051 }
5053 5052
5054 5053 stmf_status_t
5055 5054 stmf_task_poll_lu(scsi_task_t *task, uint32_t timeout)
5056 5055 {
5057 5056 stmf_i_scsi_task_t *itask = (stmf_i_scsi_task_t *)
5058 5057 task->task_stmf_private;
5059 5058 stmf_worker_t *w = itask->itask_worker;
5060 5059 int i;
5061 5060
5062 5061 ASSERT(itask->itask_flags & ITASK_KNOWN_TO_LU);
5063 5062 mutex_enter(&w->worker_lock);
5064 5063 if (itask->itask_ncmds >= ITASK_MAX_NCMDS) {
5065 5064 mutex_exit(&w->worker_lock);
5066 5065 return (STMF_BUSY);
5067 5066 }
5068 5067 for (i = 0; i < itask->itask_ncmds; i++) {
5069 5068 if (itask->itask_cmd_stack[i] == ITASK_CMD_POLL_LU) {
5070 5069 mutex_exit(&w->worker_lock);
5071 5070 return (STMF_SUCCESS);
5072 5071 }
5073 5072 }
5074 5073 itask->itask_cmd_stack[itask->itask_ncmds++] = ITASK_CMD_POLL_LU;
5075 5074 if (timeout == ITASK_DEFAULT_POLL_TIMEOUT) {
5076 5075 itask->itask_poll_timeout = ddi_get_lbolt() + 1;
5077 5076 } else {
5078 5077 clock_t t = drv_usectohz(timeout * 1000);
5079 5078 if (t == 0)
5080 5079 t = 1;
5081 5080 itask->itask_poll_timeout = ddi_get_lbolt() + t;
5082 5081 }
5083 5082 if ((itask->itask_flags & ITASK_IN_WORKER_QUEUE) == 0) {
5084 5083 itask->itask_worker_next = NULL;
5085 5084 if (w->worker_task_tail) {
5086 5085 w->worker_task_tail->itask_worker_next = itask;
5087 5086 } else {
5088 5087 w->worker_task_head = itask;
5089 5088 }
5090 5089 w->worker_task_tail = itask;
5091 5090 if (++(w->worker_queue_depth) > w->worker_max_qdepth_pu) {
5092 5091 w->worker_max_qdepth_pu = w->worker_queue_depth;
5093 5092 }
5094 5093 atomic_or_32(&itask->itask_flags, ITASK_IN_WORKER_QUEUE);
5095 5094 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0)
5096 5095 cv_signal(&w->worker_cv);
5097 5096 }
5098 5097 mutex_exit(&w->worker_lock);
5099 5098 return (STMF_SUCCESS);
5100 5099 }
5101 5100
5102 5101 stmf_status_t
5103 5102 stmf_task_poll_lport(scsi_task_t *task, uint32_t timeout)
5104 5103 {
5105 5104 stmf_i_scsi_task_t *itask = (stmf_i_scsi_task_t *)
5106 5105 task->task_stmf_private;
5107 5106 stmf_worker_t *w = itask->itask_worker;
5108 5107 int i;
5109 5108
5110 5109 ASSERT(itask->itask_flags & ITASK_KNOWN_TO_TGT_PORT);
5111 5110 mutex_enter(&w->worker_lock);
5112 5111 if (itask->itask_ncmds >= ITASK_MAX_NCMDS) {
5113 5112 mutex_exit(&w->worker_lock);
5114 5113 return (STMF_BUSY);
5115 5114 }
5116 5115 for (i = 0; i < itask->itask_ncmds; i++) {
5117 5116 if (itask->itask_cmd_stack[i] == ITASK_CMD_POLL_LPORT) {
5118 5117 mutex_exit(&w->worker_lock);
5119 5118 return (STMF_SUCCESS);
5120 5119 }
5121 5120 }
5122 5121 itask->itask_cmd_stack[itask->itask_ncmds++] = ITASK_CMD_POLL_LPORT;
5123 5122 if (timeout == ITASK_DEFAULT_POLL_TIMEOUT) {
5124 5123 itask->itask_poll_timeout = ddi_get_lbolt() + 1;
5125 5124 } else {
5126 5125 clock_t t = drv_usectohz(timeout * 1000);
5127 5126 if (t == 0)
5128 5127 t = 1;
5129 5128 itask->itask_poll_timeout = ddi_get_lbolt() + t;
5130 5129 }
5131 5130 if ((itask->itask_flags & ITASK_IN_WORKER_QUEUE) == 0) {
5132 5131 itask->itask_worker_next = NULL;
5133 5132 if (w->worker_task_tail) {
5134 5133 w->worker_task_tail->itask_worker_next = itask;
5135 5134 } else {
5136 5135 w->worker_task_head = itask;
5137 5136 }
5138 5137 w->worker_task_tail = itask;
5139 5138 if (++(w->worker_queue_depth) > w->worker_max_qdepth_pu) {
5140 5139 w->worker_max_qdepth_pu = w->worker_queue_depth;
5141 5140 }
5142 5141 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0)
5143 5142 cv_signal(&w->worker_cv);
5144 5143 }
5145 5144 mutex_exit(&w->worker_lock);
5146 5145 return (STMF_SUCCESS);
5147 5146 }
5148 5147
5149 5148 void
5150 5149 stmf_do_task_abort(scsi_task_t *task)
5151 5150 {
5152 5151 stmf_i_scsi_task_t *itask = TASK_TO_ITASK(task);
5153 5152 stmf_lu_t *lu;
5154 5153 stmf_local_port_t *lport;
5155 5154 unsigned long long ret;
5156 5155 uint32_t old, new;
5157 5156 uint8_t call_lu_abort, call_port_abort;
5158 5157 char info[STMF_CHANGE_INFO_LEN];
5159 5158
5160 5159 lu = task->task_lu;
5161 5160 lport = task->task_lport;
5162 5161 do {
5163 5162 old = new = itask->itask_flags;
5164 5163 if ((old & (ITASK_KNOWN_TO_LU | ITASK_LU_ABORT_CALLED)) ==
5165 5164 ITASK_KNOWN_TO_LU) {
5166 5165 new |= ITASK_LU_ABORT_CALLED;
5167 5166 call_lu_abort = 1;
5168 5167 } else {
5169 5168 call_lu_abort = 0;
5170 5169 }
5171 5170 } while (atomic_cas_32(&itask->itask_flags, old, new) != old);
5172 5171
5173 5172 if (call_lu_abort) {
5174 5173 if ((itask->itask_flags & ITASK_DEFAULT_HANDLING) == 0) {
5175 5174 ret = lu->lu_abort(lu, STMF_LU_ABORT_TASK, task, 0);
5176 5175 } else {
5177 5176 ret = dlun0->lu_abort(lu, STMF_LU_ABORT_TASK, task, 0);
5178 5177 }
5179 5178 if ((ret == STMF_ABORT_SUCCESS) || (ret == STMF_NOT_FOUND)) {
5180 5179 stmf_task_lu_aborted(task, ret, STMF_IOF_LU_DONE);
5181 5180 } else if (ret == STMF_BUSY) {
5182 5181 atomic_and_32(&itask->itask_flags,
5183 5182 ~ITASK_LU_ABORT_CALLED);
5184 5183 } else if (ret != STMF_SUCCESS) {
5185 5184 (void) snprintf(info, sizeof (info),
5186 5185 "Abort failed by LU %p, ret %llx", (void *)lu, ret);
5187 5186 stmf_abort_task_offline(task, 1, info);
5188 5187 }
5189 5188 } else if (itask->itask_flags & ITASK_KNOWN_TO_LU) {
5190 5189 if (ddi_get_lbolt() > (itask->itask_start_time +
5191 5190 STMF_SEC2TICK(lu->lu_abort_timeout?
5192 5191 lu->lu_abort_timeout : ITASK_DEFAULT_ABORT_TIMEOUT))) {
5193 5192 (void) snprintf(info, sizeof (info),
5194 5193 "lu abort timed out");
5195 5194 stmf_abort_task_offline(itask->itask_task, 1, info);
5196 5195 }
5197 5196 }
5198 5197
5199 5198 do {
5200 5199 old = new = itask->itask_flags;
5201 5200 if ((old & (ITASK_KNOWN_TO_TGT_PORT |
5202 5201 ITASK_TGT_PORT_ABORT_CALLED)) == ITASK_KNOWN_TO_TGT_PORT) {
5203 5202 new |= ITASK_TGT_PORT_ABORT_CALLED;
5204 5203 call_port_abort = 1;
5205 5204 } else {
5206 5205 call_port_abort = 0;
5207 5206 }
5208 5207 } while (atomic_cas_32(&itask->itask_flags, old, new) != old);
5209 5208 if (call_port_abort) {
5210 5209 ret = lport->lport_abort(lport, STMF_LPORT_ABORT_TASK, task, 0);
5211 5210 if ((ret == STMF_ABORT_SUCCESS) || (ret == STMF_NOT_FOUND)) {
5212 5211 stmf_task_lport_aborted(task, ret, STMF_IOF_LPORT_DONE);
5213 5212 } else if (ret == STMF_BUSY) {
5214 5213 atomic_and_32(&itask->itask_flags,
5215 5214 ~ITASK_TGT_PORT_ABORT_CALLED);
5216 5215 } else if (ret != STMF_SUCCESS) {
5217 5216 (void) snprintf(info, sizeof (info),
5218 5217 "Abort failed by tgt port %p ret %llx",
5219 5218 (void *)lport, ret);
5220 5219 stmf_abort_task_offline(task, 0, info);
5221 5220 }
5222 5221 } else if (itask->itask_flags & ITASK_KNOWN_TO_TGT_PORT) {
5223 5222 if (ddi_get_lbolt() > (itask->itask_start_time +
5224 5223 STMF_SEC2TICK(lport->lport_abort_timeout?
5225 5224 lport->lport_abort_timeout :
5226 5225 ITASK_DEFAULT_ABORT_TIMEOUT))) {
5227 5226 (void) snprintf(info, sizeof (info),
5228 5227 "lport abort timed out");
5229 5228 stmf_abort_task_offline(itask->itask_task, 0, info);
5230 5229 }
5231 5230 }
5232 5231 }
5233 5232
5234 5233 stmf_status_t
5235 5234 stmf_ctl(int cmd, void *obj, void *arg)
5236 5235 {
5237 5236 stmf_status_t ret;
5238 5237 stmf_i_lu_t *ilu;
5239 5238 stmf_i_local_port_t *ilport;
5240 5239 stmf_state_change_info_t *ssci = (stmf_state_change_info_t *)arg;
5241 5240
5242 5241 mutex_enter(&stmf_state.stmf_lock);
5243 5242 ret = STMF_INVALID_ARG;
5244 5243 if (cmd & STMF_CMD_LU_OP) {
5245 5244 ilu = stmf_lookup_lu((stmf_lu_t *)obj);
5246 5245 if (ilu == NULL) {
5247 5246 goto stmf_ctl_lock_exit;
5248 5247 }
5249 5248 DTRACE_PROBE3(lu__state__change,
5250 5249 stmf_lu_t *, ilu->ilu_lu,
5251 5250 int, cmd, stmf_state_change_info_t *, ssci);
5252 5251 } else if (cmd & STMF_CMD_LPORT_OP) {
5253 5252 ilport = stmf_lookup_lport((stmf_local_port_t *)obj);
5254 5253 if (ilport == NULL) {
5255 5254 goto stmf_ctl_lock_exit;
5256 5255 }
5257 5256 DTRACE_PROBE3(lport__state__change,
5258 5257 stmf_local_port_t *, ilport->ilport_lport,
5259 5258 int, cmd, stmf_state_change_info_t *, ssci);
5260 5259 } else {
5261 5260 goto stmf_ctl_lock_exit;
5262 5261 }
5263 5262
5264 5263 switch (cmd) {
5265 5264 case STMF_CMD_LU_ONLINE:
5266 5265 switch (ilu->ilu_state) {
5267 5266 case STMF_STATE_OFFLINE:
5268 5267 ret = STMF_SUCCESS;
5269 5268 break;
5270 5269 case STMF_STATE_ONLINE:
5271 5270 case STMF_STATE_ONLINING:
5272 5271 ret = STMF_ALREADY;
5273 5272 break;
5274 5273 case STMF_STATE_OFFLINING:
5275 5274 ret = STMF_BUSY;
5276 5275 break;
5277 5276 default:
5278 5277 ret = STMF_BADSTATE;
5279 5278 break;
5280 5279 }
5281 5280 if (ret != STMF_SUCCESS)
5282 5281 goto stmf_ctl_lock_exit;
5283 5282
5284 5283 ilu->ilu_state = STMF_STATE_ONLINING;
5285 5284 mutex_exit(&stmf_state.stmf_lock);
5286 5285 stmf_svc_queue(cmd, obj, (stmf_state_change_info_t *)arg);
5287 5286 break;
5288 5287
5289 5288 case STMF_CMD_LU_ONLINE_COMPLETE:
5290 5289 if (ilu->ilu_state != STMF_STATE_ONLINING) {
5291 5290 ret = STMF_BADSTATE;
5292 5291 goto stmf_ctl_lock_exit;
5293 5292 }
5294 5293 if (((stmf_change_status_t *)arg)->st_completion_status ==
5295 5294 STMF_SUCCESS) {
5296 5295 ilu->ilu_state = STMF_STATE_ONLINE;
5297 5296 mutex_exit(&stmf_state.stmf_lock);
5298 5297 ((stmf_lu_t *)obj)->lu_ctl((stmf_lu_t *)obj,
5299 5298 STMF_ACK_LU_ONLINE_COMPLETE, arg);
5300 5299 mutex_enter(&stmf_state.stmf_lock);
5301 5300 stmf_add_lu_to_active_sessions((stmf_lu_t *)obj);
5302 5301 } else {
5303 5302 /* XXX: should throw a meesage an record more data */
5304 5303 ilu->ilu_state = STMF_STATE_OFFLINE;
5305 5304 }
5306 5305 ret = STMF_SUCCESS;
5307 5306 goto stmf_ctl_lock_exit;
5308 5307
5309 5308 case STMF_CMD_LU_OFFLINE:
5310 5309 switch (ilu->ilu_state) {
5311 5310 case STMF_STATE_ONLINE:
5312 5311 ret = STMF_SUCCESS;
5313 5312 break;
5314 5313 case STMF_STATE_OFFLINE:
5315 5314 case STMF_STATE_OFFLINING:
5316 5315 ret = STMF_ALREADY;
5317 5316 break;
5318 5317 case STMF_STATE_ONLINING:
5319 5318 ret = STMF_BUSY;
5320 5319 break;
5321 5320 default:
5322 5321 ret = STMF_BADSTATE;
5323 5322 break;
5324 5323 }
5325 5324 if (ret != STMF_SUCCESS)
5326 5325 goto stmf_ctl_lock_exit;
5327 5326 ilu->ilu_state = STMF_STATE_OFFLINING;
5328 5327 mutex_exit(&stmf_state.stmf_lock);
5329 5328 stmf_svc_queue(cmd, obj, (stmf_state_change_info_t *)arg);
5330 5329 break;
5331 5330
5332 5331 case STMF_CMD_LU_OFFLINE_COMPLETE:
5333 5332 if (ilu->ilu_state != STMF_STATE_OFFLINING) {
5334 5333 ret = STMF_BADSTATE;
5335 5334 goto stmf_ctl_lock_exit;
5336 5335 }
5337 5336 if (((stmf_change_status_t *)arg)->st_completion_status ==
5338 5337 STMF_SUCCESS) {
5339 5338 ilu->ilu_state = STMF_STATE_OFFLINE;
5340 5339 mutex_exit(&stmf_state.stmf_lock);
5341 5340 ((stmf_lu_t *)obj)->lu_ctl((stmf_lu_t *)obj,
5342 5341 STMF_ACK_LU_OFFLINE_COMPLETE, arg);
5343 5342 mutex_enter(&stmf_state.stmf_lock);
5344 5343 } else {
5345 5344 ilu->ilu_state = STMF_STATE_ONLINE;
5346 5345 stmf_add_lu_to_active_sessions((stmf_lu_t *)obj);
5347 5346 }
5348 5347 mutex_exit(&stmf_state.stmf_lock);
5349 5348 break;
5350 5349
5351 5350 /*
5352 5351 * LPORT_ONLINE/OFFLINE has nothing to do with link offline/online.
5353 5352 * It's related with hardware disable/enable.
5354 5353 */
5355 5354 case STMF_CMD_LPORT_ONLINE:
5356 5355 switch (ilport->ilport_state) {
5357 5356 case STMF_STATE_OFFLINE:
5358 5357 ret = STMF_SUCCESS;
5359 5358 break;
5360 5359 case STMF_STATE_ONLINE:
5361 5360 case STMF_STATE_ONLINING:
5362 5361 ret = STMF_ALREADY;
5363 5362 break;
5364 5363 case STMF_STATE_OFFLINING:
5365 5364 ret = STMF_BUSY;
5366 5365 break;
5367 5366 default:
5368 5367 ret = STMF_BADSTATE;
5369 5368 break;
5370 5369 }
5371 5370 if (ret != STMF_SUCCESS)
5372 5371 goto stmf_ctl_lock_exit;
5373 5372
5374 5373 /*
5375 5374 * Only user request can recover the port from the
5376 5375 * FORCED_OFFLINE state
5377 5376 */
5378 5377 if (ilport->ilport_flags & ILPORT_FORCED_OFFLINE) {
5379 5378 if (!(ssci->st_rflags & STMF_RFLAG_USER_REQUEST)) {
5380 5379 ret = STMF_FAILURE;
5381 5380 goto stmf_ctl_lock_exit;
5382 5381 }
5383 5382 }
5384 5383
5385 5384 /*
5386 5385 * Avoid too frequent request to online
5387 5386 */
5388 5387 if (ssci->st_rflags & STMF_RFLAG_USER_REQUEST) {
5389 5388 ilport->ilport_online_times = 0;
5390 5389 ilport->ilport_avg_interval = 0;
5391 5390 }
5392 5391 if ((ilport->ilport_avg_interval < STMF_AVG_ONLINE_INTERVAL) &&
5393 5392 (ilport->ilport_online_times >= 4)) {
5394 5393 ret = STMF_FAILURE;
5395 5394 ilport->ilport_flags |= ILPORT_FORCED_OFFLINE;
5396 5395 stmf_trace(NULL, "stmf_ctl: too frequent request to "
5397 5396 "online the port");
5398 5397 cmn_err(CE_WARN, "stmf_ctl: too frequent request to "
5399 5398 "online the port, set FORCED_OFFLINE now");
5400 5399 goto stmf_ctl_lock_exit;
5401 5400 }
5402 5401 if (ilport->ilport_online_times > 0) {
5403 5402 if (ilport->ilport_online_times == 1) {
5404 5403 ilport->ilport_avg_interval = ddi_get_lbolt() -
5405 5404 ilport->ilport_last_online_clock;
5406 5405 } else {
5407 5406 ilport->ilport_avg_interval =
5408 5407 (ilport->ilport_avg_interval +
5409 5408 ddi_get_lbolt() -
5410 5409 ilport->ilport_last_online_clock) >> 1;
5411 5410 }
5412 5411 }
5413 5412 ilport->ilport_last_online_clock = ddi_get_lbolt();
5414 5413 ilport->ilport_online_times++;
5415 5414
5416 5415 /*
5417 5416 * Submit online service request
5418 5417 */
5419 5418 ilport->ilport_flags &= ~ILPORT_FORCED_OFFLINE;
5420 5419 ilport->ilport_state = STMF_STATE_ONLINING;
5421 5420 mutex_exit(&stmf_state.stmf_lock);
5422 5421 stmf_svc_queue(cmd, obj, (stmf_state_change_info_t *)arg);
5423 5422 break;
5424 5423
5425 5424 case STMF_CMD_LPORT_ONLINE_COMPLETE:
5426 5425 if (ilport->ilport_state != STMF_STATE_ONLINING) {
5427 5426 ret = STMF_BADSTATE;
5428 5427 goto stmf_ctl_lock_exit;
5429 5428 }
5430 5429 if (((stmf_change_status_t *)arg)->st_completion_status ==
5431 5430 STMF_SUCCESS) {
5432 5431 ilport->ilport_state = STMF_STATE_ONLINE;
5433 5432 mutex_exit(&stmf_state.stmf_lock);
5434 5433 ((stmf_local_port_t *)obj)->lport_ctl(
5435 5434 (stmf_local_port_t *)obj,
5436 5435 STMF_ACK_LPORT_ONLINE_COMPLETE, arg);
5437 5436 mutex_enter(&stmf_state.stmf_lock);
5438 5437 } else {
5439 5438 ilport->ilport_state = STMF_STATE_OFFLINE;
5440 5439 }
5441 5440 ret = STMF_SUCCESS;
5442 5441 goto stmf_ctl_lock_exit;
5443 5442
5444 5443 case STMF_CMD_LPORT_OFFLINE:
5445 5444 switch (ilport->ilport_state) {
5446 5445 case STMF_STATE_ONLINE:
5447 5446 ret = STMF_SUCCESS;
5448 5447 break;
5449 5448 case STMF_STATE_OFFLINE:
5450 5449 case STMF_STATE_OFFLINING:
5451 5450 ret = STMF_ALREADY;
5452 5451 break;
5453 5452 case STMF_STATE_ONLINING:
5454 5453 ret = STMF_BUSY;
5455 5454 break;
5456 5455 default:
5457 5456 ret = STMF_BADSTATE;
5458 5457 break;
5459 5458 }
5460 5459 if (ret != STMF_SUCCESS)
5461 5460 goto stmf_ctl_lock_exit;
5462 5461
5463 5462 ilport->ilport_state = STMF_STATE_OFFLINING;
5464 5463 mutex_exit(&stmf_state.stmf_lock);
5465 5464 stmf_svc_queue(cmd, obj, (stmf_state_change_info_t *)arg);
5466 5465 break;
5467 5466
5468 5467 case STMF_CMD_LPORT_OFFLINE_COMPLETE:
5469 5468 if (ilport->ilport_state != STMF_STATE_OFFLINING) {
5470 5469 ret = STMF_BADSTATE;
5471 5470 goto stmf_ctl_lock_exit;
5472 5471 }
5473 5472 if (((stmf_change_status_t *)arg)->st_completion_status ==
5474 5473 STMF_SUCCESS) {
5475 5474 ilport->ilport_state = STMF_STATE_OFFLINE;
5476 5475 mutex_exit(&stmf_state.stmf_lock);
5477 5476 ((stmf_local_port_t *)obj)->lport_ctl(
5478 5477 (stmf_local_port_t *)obj,
5479 5478 STMF_ACK_LPORT_OFFLINE_COMPLETE, arg);
5480 5479 mutex_enter(&stmf_state.stmf_lock);
5481 5480 } else {
5482 5481 ilport->ilport_state = STMF_STATE_ONLINE;
5483 5482 }
5484 5483 mutex_exit(&stmf_state.stmf_lock);
5485 5484 break;
5486 5485
5487 5486 default:
5488 5487 cmn_err(CE_WARN, "Invalid ctl cmd received %x", cmd);
5489 5488 ret = STMF_INVALID_ARG;
5490 5489 goto stmf_ctl_lock_exit;
5491 5490 }
5492 5491
5493 5492 return (STMF_SUCCESS);
5494 5493
5495 5494 stmf_ctl_lock_exit:;
5496 5495 mutex_exit(&stmf_state.stmf_lock);
5497 5496 return (ret);
5498 5497 }
5499 5498
5500 5499 /* ARGSUSED */
5501 5500 stmf_status_t
5502 5501 stmf_info_impl(uint32_t cmd, void *arg1, void *arg2, uint8_t *buf,
5503 5502 uint32_t *bufsizep)
5504 5503 {
5505 5504 return (STMF_NOT_SUPPORTED);
5506 5505 }
5507 5506
5508 5507 /* ARGSUSED */
5509 5508 stmf_status_t
5510 5509 stmf_info(uint32_t cmd, void *arg1, void *arg2, uint8_t *buf,
5511 5510 uint32_t *bufsizep)
5512 5511 {
5513 5512 uint32_t cl = SI_GET_CLASS(cmd);
5514 5513
5515 5514 if (cl == SI_STMF) {
5516 5515 return (stmf_info_impl(cmd, arg1, arg2, buf, bufsizep));
5517 5516 }
5518 5517 if (cl == SI_LPORT) {
5519 5518 return (((stmf_local_port_t *)arg1)->lport_info(cmd, arg1,
5520 5519 arg2, buf, bufsizep));
5521 5520 } else if (cl == SI_LU) {
5522 5521 return (((stmf_lu_t *)arg1)->lu_info(cmd, arg1, arg2, buf,
5523 5522 bufsizep));
5524 5523 }
5525 5524
5526 5525 return (STMF_NOT_SUPPORTED);
5527 5526 }
5528 5527
5529 5528 /*
5530 5529 * Used by port providers. pwwn is 8 byte wwn, sdid is the devid used by
5531 5530 * stmf to register local ports. The ident should have 20 bytes in buffer
5532 5531 * space to convert the wwn to "wwn.xxxxxxxxxxxxxxxx" string.
5533 5532 */
5534 5533 void
5535 5534 stmf_wwn_to_devid_desc(scsi_devid_desc_t *sdid, uint8_t *wwn,
5536 5535 uint8_t protocol_id)
5537 5536 {
5538 5537 char wwn_str[20+1];
5539 5538
5540 5539 sdid->protocol_id = protocol_id;
5541 5540 sdid->piv = 1;
5542 5541 sdid->code_set = CODE_SET_ASCII;
5543 5542 sdid->association = ID_IS_TARGET_PORT;
5544 5543 sdid->ident_length = 20;
5545 5544 /* Convert wwn value to "wwn.XXXXXXXXXXXXXXXX" format */
5546 5545 (void) snprintf(wwn_str, sizeof (wwn_str),
5547 5546 "wwn.%02X%02X%02X%02X%02X%02X%02X%02X",
5548 5547 wwn[0], wwn[1], wwn[2], wwn[3], wwn[4], wwn[5], wwn[6], wwn[7]);
5549 5548 bcopy(wwn_str, (char *)sdid->ident, 20);
5550 5549 }
5551 5550
5552 5551
5553 5552 stmf_xfer_data_t *
5554 5553 stmf_prepare_tpgs_data(uint8_t ilu_alua)
5555 5554 {
5556 5555 stmf_xfer_data_t *xd;
5557 5556 stmf_i_local_port_t *ilport;
5558 5557 uint8_t *p;
5559 5558 uint32_t sz, asz, nports = 0, nports_standby = 0;
5560 5559
5561 5560 mutex_enter(&stmf_state.stmf_lock);
5562 5561 /* check if any ports are standby and create second group */
5563 5562 for (ilport = stmf_state.stmf_ilportlist; ilport;
5564 5563 ilport = ilport->ilport_next) {
5565 5564 if (ilport->ilport_standby == 1) {
5566 5565 nports_standby++;
5567 5566 } else {
5568 5567 nports++;
5569 5568 }
5570 5569 }
5571 5570
5572 5571 /* The spec only allows for 255 ports to be reported per group */
5573 5572 nports = min(nports, 255);
5574 5573 nports_standby = min(nports_standby, 255);
5575 5574 sz = (nports * 4) + 12;
5576 5575 if (nports_standby && ilu_alua) {
5577 5576 sz += (nports_standby * 4) + 8;
5578 5577 }
5579 5578 asz = sz + sizeof (*xd) - 4;
5580 5579 xd = (stmf_xfer_data_t *)kmem_zalloc(asz, KM_NOSLEEP);
5581 5580 if (xd == NULL) {
5582 5581 mutex_exit(&stmf_state.stmf_lock);
5583 5582 return (NULL);
5584 5583 }
5585 5584 xd->alloc_size = asz;
5586 5585 xd->size_left = sz;
5587 5586
5588 5587 p = xd->buf;
5589 5588
5590 5589 *((uint32_t *)p) = BE_32(sz - 4);
5591 5590 p += 4;
5592 5591 p[0] = 0x80; /* PREF */
5593 5592 p[1] = 5; /* AO_SUP, S_SUP */
5594 5593 if (stmf_state.stmf_alua_node == 1) {
5595 5594 p[3] = 1; /* Group 1 */
5596 5595 } else {
5597 5596 p[3] = 0; /* Group 0 */
5598 5597 }
5599 5598 p[7] = nports & 0xff;
5600 5599 p += 8;
5601 5600 for (ilport = stmf_state.stmf_ilportlist; ilport;
5602 5601 ilport = ilport->ilport_next) {
5603 5602 if (ilport->ilport_standby == 1) {
5604 5603 continue;
5605 5604 }
5606 5605 ((uint16_t *)p)[1] = BE_16(ilport->ilport_rtpid);
5607 5606 p += 4;
5608 5607 }
5609 5608 if (nports_standby && ilu_alua) {
5610 5609 p[0] = 0x02; /* Non PREF, Standby */
5611 5610 p[1] = 5; /* AO_SUP, S_SUP */
5612 5611 if (stmf_state.stmf_alua_node == 1) {
5613 5612 p[3] = 0; /* Group 0 */
5614 5613 } else {
5615 5614 p[3] = 1; /* Group 1 */
5616 5615 }
5617 5616 p[7] = nports_standby & 0xff;
5618 5617 p += 8;
5619 5618 for (ilport = stmf_state.stmf_ilportlist; ilport;
5620 5619 ilport = ilport->ilport_next) {
5621 5620 if (ilport->ilport_standby == 0) {
5622 5621 continue;
5623 5622 }
5624 5623 ((uint16_t *)p)[1] = BE_16(ilport->ilport_rtpid);
5625 5624 p += 4;
5626 5625 }
5627 5626 }
5628 5627
5629 5628 mutex_exit(&stmf_state.stmf_lock);
5630 5629
5631 5630 return (xd);
5632 5631 }
5633 5632
5634 5633 struct scsi_devid_desc *
5635 5634 stmf_scsilib_get_devid_desc(uint16_t rtpid)
5636 5635 {
5637 5636 scsi_devid_desc_t *devid = NULL;
5638 5637 stmf_i_local_port_t *ilport;
5639 5638
5640 5639 mutex_enter(&stmf_state.stmf_lock);
5641 5640
5642 5641 for (ilport = stmf_state.stmf_ilportlist; ilport;
5643 5642 ilport = ilport->ilport_next) {
5644 5643 if (ilport->ilport_rtpid == rtpid) {
5645 5644 scsi_devid_desc_t *id = ilport->ilport_lport->lport_id;
5646 5645 uint32_t id_sz = sizeof (scsi_devid_desc_t) +
5647 5646 id->ident_length;
5648 5647 devid = (scsi_devid_desc_t *)kmem_zalloc(id_sz,
5649 5648 KM_NOSLEEP);
5650 5649 if (devid != NULL) {
5651 5650 bcopy(id, devid, id_sz);
5652 5651 }
5653 5652 break;
5654 5653 }
5655 5654 }
5656 5655
5657 5656 mutex_exit(&stmf_state.stmf_lock);
5658 5657 return (devid);
5659 5658 }
5660 5659
5661 5660 uint16_t
5662 5661 stmf_scsilib_get_lport_rtid(struct scsi_devid_desc *devid)
5663 5662 {
5664 5663 stmf_i_local_port_t *ilport;
5665 5664 scsi_devid_desc_t *id;
5666 5665 uint16_t rtpid = 0;
5667 5666
5668 5667 mutex_enter(&stmf_state.stmf_lock);
5669 5668 for (ilport = stmf_state.stmf_ilportlist; ilport;
5670 5669 ilport = ilport->ilport_next) {
5671 5670 id = ilport->ilport_lport->lport_id;
5672 5671 if ((devid->ident_length == id->ident_length) &&
5673 5672 (memcmp(devid->ident, id->ident, id->ident_length) == 0)) {
5674 5673 rtpid = ilport->ilport_rtpid;
5675 5674 break;
5676 5675 }
5677 5676 }
5678 5677 mutex_exit(&stmf_state.stmf_lock);
5679 5678 return (rtpid);
5680 5679 }
5681 5680
5682 5681 static uint16_t stmf_lu_id_gen_number = 0;
5683 5682
5684 5683 stmf_status_t
5685 5684 stmf_scsilib_uniq_lu_id(uint32_t company_id, scsi_devid_desc_t *lu_id)
5686 5685 {
5687 5686 return (stmf_scsilib_uniq_lu_id2(company_id, 0, lu_id));
5688 5687 }
5689 5688
5690 5689 stmf_status_t
5691 5690 stmf_scsilib_uniq_lu_id2(uint32_t company_id, uint32_t host_id,
5692 5691 scsi_devid_desc_t *lu_id)
5693 5692 {
5694 5693 uint8_t *p;
5695 5694 struct timeval32 timestamp32;
5696 5695 uint32_t *t = (uint32_t *)×tamp32;
5697 5696 struct ether_addr mac;
5698 5697 uint8_t *e = (uint8_t *)&mac;
5699 5698 int hid = (int)host_id;
5700 5699 uint16_t gen_number;
5701 5700
5702 5701 if (company_id == COMPANY_ID_NONE)
5703 5702 company_id = COMPANY_ID_SUN;
5704 5703
5705 5704 if (lu_id->ident_length != 0x10)
5706 5705 return (STMF_INVALID_ARG);
5707 5706
5708 5707 p = (uint8_t *)lu_id;
5709 5708
5710 5709 gen_number = atomic_inc_16_nv(&stmf_lu_id_gen_number);
5711 5710
5712 5711 p[0] = 0xf1; p[1] = 3; p[2] = 0; p[3] = 0x10;
5713 5712 p[4] = ((company_id >> 20) & 0xf) | 0x60;
5714 5713 p[5] = (company_id >> 12) & 0xff;
5715 5714 p[6] = (company_id >> 4) & 0xff;
5716 5715 p[7] = (company_id << 4) & 0xf0;
5717 5716 if (hid == 0 && !localetheraddr((struct ether_addr *)NULL, &mac)) {
5718 5717 hid = BE_32((int)zone_get_hostid(NULL));
5719 5718 }
5720 5719 if (hid != 0) {
5721 5720 e[0] = (hid >> 24) & 0xff;
5722 5721 e[1] = (hid >> 16) & 0xff;
5723 5722 e[2] = (hid >> 8) & 0xff;
5724 5723 e[3] = hid & 0xff;
5725 5724 e[4] = e[5] = 0;
5726 5725 }
5727 5726 bcopy(e, p+8, 6);
5728 5727 uniqtime32(×tamp32);
5729 5728 *t = BE_32(*t);
5730 5729 bcopy(t, p+14, 4);
5731 5730 p[18] = (gen_number >> 8) & 0xff;
5732 5731 p[19] = gen_number & 0xff;
5733 5732
5734 5733 return (STMF_SUCCESS);
5735 5734 }
5736 5735
5737 5736 /*
5738 5737 * saa is sense key, ASC, ASCQ
5739 5738 */
5740 5739 void
5741 5740 stmf_scsilib_send_status(scsi_task_t *task, uint8_t st, uint32_t saa)
5742 5741 {
5743 5742 uint8_t sd[18];
5744 5743 task->task_scsi_status = st;
5745 5744 if (st == 2) {
5746 5745 bzero(sd, 18);
5747 5746 sd[0] = 0x70;
5748 5747 sd[2] = (saa >> 16) & 0xf;
5749 5748 sd[7] = 10;
5750 5749 sd[12] = (saa >> 8) & 0xff;
5751 5750 sd[13] = saa & 0xff;
5752 5751 task->task_sense_data = sd;
5753 5752 task->task_sense_length = 18;
5754 5753 } else {
5755 5754 task->task_sense_data = NULL;
5756 5755 task->task_sense_length = 0;
5757 5756 }
5758 5757 (void) stmf_send_scsi_status(task, STMF_IOF_LU_DONE);
5759 5758 }
5760 5759
5761 5760 uint32_t
5762 5761 stmf_scsilib_prepare_vpd_page83(scsi_task_t *task, uint8_t *page,
5763 5762 uint32_t page_len, uint8_t byte0, uint32_t vpd_mask)
5764 5763 {
5765 5764 uint8_t *p = NULL;
5766 5765 uint8_t small_buf[32];
5767 5766 uint32_t sz = 0;
5768 5767 uint32_t n = 4;
5769 5768 uint32_t m = 0;
5770 5769 uint32_t last_bit = 0;
5771 5770
5772 5771 if (page_len < 4)
5773 5772 return (0);
5774 5773 if (page_len > 65535)
5775 5774 page_len = 65535;
5776 5775
5777 5776 page[0] = byte0;
5778 5777 page[1] = 0x83;
5779 5778
5780 5779 /* CONSTCOND */
5781 5780 while (1) {
5782 5781 m += sz;
5783 5782 if (sz && (page_len > n)) {
5784 5783 uint32_t copysz;
5785 5784 copysz = page_len > (n + sz) ? sz : page_len - n;
5786 5785 bcopy(p, page + n, copysz);
5787 5786 n += copysz;
5788 5787 }
5789 5788 vpd_mask &= ~last_bit;
5790 5789 if (vpd_mask == 0)
5791 5790 break;
5792 5791
5793 5792 if (vpd_mask & STMF_VPD_LU_ID) {
5794 5793 last_bit = STMF_VPD_LU_ID;
5795 5794 sz = task->task_lu->lu_id->ident_length + 4;
5796 5795 p = (uint8_t *)task->task_lu->lu_id;
5797 5796 continue;
5798 5797 } else if (vpd_mask & STMF_VPD_TARGET_ID) {
5799 5798 last_bit = STMF_VPD_TARGET_ID;
5800 5799 sz = task->task_lport->lport_id->ident_length + 4;
5801 5800 p = (uint8_t *)task->task_lport->lport_id;
5802 5801 continue;
5803 5802 } else if (vpd_mask & STMF_VPD_TP_GROUP) {
5804 5803 stmf_i_local_port_t *ilport;
5805 5804 last_bit = STMF_VPD_TP_GROUP;
5806 5805 p = small_buf;
5807 5806 bzero(p, 8);
5808 5807 p[0] = 1;
5809 5808 p[1] = 0x15;
5810 5809 p[3] = 4;
5811 5810 ilport = (stmf_i_local_port_t *)
5812 5811 task->task_lport->lport_stmf_private;
5813 5812 /*
5814 5813 * If we're in alua mode, group 1 contains all alua
5815 5814 * participating ports and all standby ports
5816 5815 * > 255. Otherwise, if we're in alua mode, any local
5817 5816 * ports (non standby/pppt) are also in group 1 if the
5818 5817 * alua node is 1. Otherwise the group is 0.
5819 5818 */
5820 5819 if ((stmf_state.stmf_alua_state &&
5821 5820 (ilport->ilport_alua || ilport->ilport_standby) &&
5822 5821 ilport->ilport_rtpid > 255) ||
5823 5822 (stmf_state.stmf_alua_node == 1 &&
5824 5823 ilport->ilport_standby != 1)) {
5825 5824 p[7] = 1; /* Group 1 */
5826 5825 }
5827 5826 sz = 8;
5828 5827 continue;
5829 5828 } else if (vpd_mask & STMF_VPD_RELATIVE_TP_ID) {
5830 5829 stmf_i_local_port_t *ilport;
5831 5830
5832 5831 last_bit = STMF_VPD_RELATIVE_TP_ID;
5833 5832 p = small_buf;
5834 5833 bzero(p, 8);
5835 5834 p[0] = 1;
5836 5835 p[1] = 0x14;
5837 5836 p[3] = 4;
5838 5837 ilport = (stmf_i_local_port_t *)
5839 5838 task->task_lport->lport_stmf_private;
5840 5839 p[6] = (ilport->ilport_rtpid >> 8) & 0xff;
5841 5840 p[7] = ilport->ilport_rtpid & 0xff;
5842 5841 sz = 8;
5843 5842 continue;
5844 5843 } else {
5845 5844 cmn_err(CE_WARN, "Invalid vpd_mask");
5846 5845 break;
5847 5846 }
5848 5847 }
5849 5848
5850 5849 page[2] = (m >> 8) & 0xff;
5851 5850 page[3] = m & 0xff;
5852 5851
5853 5852 return (n);
5854 5853 }
5855 5854
5856 5855 void
5857 5856 stmf_scsilib_handle_report_tpgs(scsi_task_t *task, stmf_data_buf_t *dbuf)
5858 5857 {
5859 5858 stmf_i_scsi_task_t *itask =
5860 5859 (stmf_i_scsi_task_t *)task->task_stmf_private;
5861 5860 stmf_i_lu_t *ilu =
5862 5861 (stmf_i_lu_t *)task->task_lu->lu_stmf_private;
5863 5862 stmf_xfer_data_t *xd;
5864 5863 uint32_t sz, minsz;
5865 5864
5866 5865 itask->itask_flags |= ITASK_DEFAULT_HANDLING;
5867 5866 task->task_cmd_xfer_length =
5868 5867 ((((uint32_t)task->task_cdb[6]) << 24) |
5869 5868 (((uint32_t)task->task_cdb[7]) << 16) |
5870 5869 (((uint32_t)task->task_cdb[8]) << 8) |
5871 5870 ((uint32_t)task->task_cdb[9]));
5872 5871
5873 5872 if (task->task_additional_flags &
5874 5873 TASK_AF_NO_EXPECTED_XFER_LENGTH) {
5875 5874 task->task_expected_xfer_length =
5876 5875 task->task_cmd_xfer_length;
5877 5876 }
5878 5877
5879 5878 if (task->task_cmd_xfer_length == 0) {
5880 5879 stmf_scsilib_send_status(task, STATUS_GOOD, 0);
5881 5880 return;
5882 5881 }
5883 5882 if (task->task_cmd_xfer_length < 4) {
5884 5883 stmf_scsilib_send_status(task, STATUS_CHECK,
5885 5884 STMF_SAA_INVALID_FIELD_IN_CDB);
5886 5885 return;
5887 5886 }
5888 5887
5889 5888 sz = min(task->task_expected_xfer_length,
5890 5889 task->task_cmd_xfer_length);
5891 5890
5892 5891 xd = stmf_prepare_tpgs_data(ilu->ilu_alua);
5893 5892
5894 5893 if (xd == NULL) {
5895 5894 stmf_abort(STMF_QUEUE_TASK_ABORT, task,
5896 5895 STMF_ALLOC_FAILURE, NULL);
5897 5896 return;
5898 5897 }
5899 5898
5900 5899 sz = min(sz, xd->size_left);
5901 5900 xd->size_left = sz;
5902 5901 minsz = min(512, sz);
5903 5902
5904 5903 if (dbuf == NULL)
5905 5904 dbuf = stmf_alloc_dbuf(task, sz, &minsz, 0);
5906 5905 if (dbuf == NULL) {
5907 5906 kmem_free(xd, xd->alloc_size);
5908 5907 stmf_abort(STMF_QUEUE_TASK_ABORT, task,
5909 5908 STMF_ALLOC_FAILURE, NULL);
5910 5909 return;
5911 5910 }
5912 5911 dbuf->db_lu_private = xd;
5913 5912 stmf_xd_to_dbuf(dbuf, 1);
5914 5913
5915 5914 dbuf->db_flags = DB_DIRECTION_TO_RPORT;
5916 5915 (void) stmf_xfer_data(task, dbuf, 0);
5917 5916
5918 5917 }
5919 5918
5920 5919 void
5921 5920 stmf_scsilib_handle_task_mgmt(scsi_task_t *task)
5922 5921 {
5923 5922
5924 5923 switch (task->task_mgmt_function) {
5925 5924 /*
5926 5925 * For now we will abort all I/Os on the LU in case of ABORT_TASK_SET
5927 5926 * and ABORT_TASK. But unlike LUN_RESET we will not reset LU state
5928 5927 * in these cases. This needs to be changed to abort only the required
5929 5928 * set.
5930 5929 */
5931 5930 case TM_ABORT_TASK:
5932 5931 case TM_ABORT_TASK_SET:
5933 5932 case TM_CLEAR_TASK_SET:
5934 5933 case TM_LUN_RESET:
5935 5934 stmf_handle_lun_reset(task);
5936 5935 /* issue the reset to the proxy node as well */
5937 5936 if (stmf_state.stmf_alua_state == 1) {
5938 5937 (void) stmf_proxy_scsi_cmd(task, NULL);
5939 5938 }
5940 5939 return;
5941 5940 case TM_TARGET_RESET:
5942 5941 case TM_TARGET_COLD_RESET:
5943 5942 case TM_TARGET_WARM_RESET:
5944 5943 stmf_handle_target_reset(task);
5945 5944 return;
5946 5945 default:
5947 5946 /* We dont support this task mgmt function */
5948 5947 stmf_scsilib_send_status(task, STATUS_CHECK,
5949 5948 STMF_SAA_INVALID_FIELD_IN_CMD_IU);
5950 5949 return;
5951 5950 }
5952 5951 }
5953 5952
5954 5953 void
5955 5954 stmf_handle_lun_reset(scsi_task_t *task)
5956 5955 {
5957 5956 stmf_i_scsi_task_t *itask;
5958 5957 stmf_i_lu_t *ilu;
5959 5958
5960 5959 itask = (stmf_i_scsi_task_t *)task->task_stmf_private;
5961 5960 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private;
5962 5961
5963 5962 /*
5964 5963 * To sync with target reset, grab this lock. The LU is not going
5965 5964 * anywhere as there is atleast one task pending (this task).
5966 5965 */
5967 5966 mutex_enter(&stmf_state.stmf_lock);
5968 5967
5969 5968 if (ilu->ilu_flags & ILU_RESET_ACTIVE) {
5970 5969 mutex_exit(&stmf_state.stmf_lock);
5971 5970 stmf_scsilib_send_status(task, STATUS_CHECK,
5972 5971 STMF_SAA_OPERATION_IN_PROGRESS);
5973 5972 return;
5974 5973 }
5975 5974 atomic_or_32(&ilu->ilu_flags, ILU_RESET_ACTIVE);
5976 5975 mutex_exit(&stmf_state.stmf_lock);
5977 5976
5978 5977 /*
5979 5978 * Mark this task as the one causing LU reset so that we know who
5980 5979 * was responsible for setting the ILU_RESET_ACTIVE. In case this
5981 5980 * task itself gets aborted, we will clear ILU_RESET_ACTIVE.
5982 5981 */
5983 5982 itask->itask_flags |= ITASK_DEFAULT_HANDLING | ITASK_CAUSING_LU_RESET;
5984 5983
5985 5984 /* Initiatiate abort on all commands on this LU except this one */
5986 5985 stmf_abort(STMF_QUEUE_ABORT_LU, task, STMF_ABORTED, task->task_lu);
5987 5986
5988 5987 /* Start polling on this task */
5989 5988 if (stmf_task_poll_lu(task, ITASK_DEFAULT_POLL_TIMEOUT)
5990 5989 != STMF_SUCCESS) {
5991 5990 stmf_abort(STMF_QUEUE_TASK_ABORT, task, STMF_ALLOC_FAILURE,
5992 5991 NULL);
5993 5992 return;
5994 5993 }
5995 5994 }
5996 5995
5997 5996 void
5998 5997 stmf_handle_target_reset(scsi_task_t *task)
5999 5998 {
6000 5999 stmf_i_scsi_task_t *itask;
6001 6000 stmf_i_lu_t *ilu;
6002 6001 stmf_i_scsi_session_t *iss;
6003 6002 stmf_lun_map_t *lm;
6004 6003 stmf_lun_map_ent_t *lm_ent;
6005 6004 int i, lf;
6006 6005
6007 6006 itask = (stmf_i_scsi_task_t *)task->task_stmf_private;
6008 6007 iss = (stmf_i_scsi_session_t *)task->task_session->ss_stmf_private;
6009 6008 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private;
6010 6009
6011 6010 /*
6012 6011 * To sync with LUN reset, grab this lock. The session is not going
6013 6012 * anywhere as there is atleast one task pending (this task).
6014 6013 */
6015 6014 mutex_enter(&stmf_state.stmf_lock);
6016 6015
6017 6016 /* Grab the session lock as a writer to prevent any changes in it */
6018 6017 rw_enter(iss->iss_lockp, RW_WRITER);
6019 6018
6020 6019 if (iss->iss_flags & ISS_RESET_ACTIVE) {
6021 6020 rw_exit(iss->iss_lockp);
6022 6021 mutex_exit(&stmf_state.stmf_lock);
6023 6022 stmf_scsilib_send_status(task, STATUS_CHECK,
6024 6023 STMF_SAA_OPERATION_IN_PROGRESS);
6025 6024 return;
6026 6025 }
6027 6026 atomic_or_32(&iss->iss_flags, ISS_RESET_ACTIVE);
6028 6027
6029 6028 /*
6030 6029 * Now go through each LUN in this session and make sure all of them
6031 6030 * can be reset.
6032 6031 */
6033 6032 lm = iss->iss_sm;
6034 6033 for (i = 0, lf = 0; i < lm->lm_nentries; i++) {
6035 6034 if (lm->lm_plus[i] == NULL)
6036 6035 continue;
6037 6036 lf++;
6038 6037 lm_ent = (stmf_lun_map_ent_t *)lm->lm_plus[i];
6039 6038 ilu = (stmf_i_lu_t *)(lm_ent->ent_lu->lu_stmf_private);
6040 6039 if (ilu->ilu_flags & ILU_RESET_ACTIVE) {
6041 6040 atomic_and_32(&iss->iss_flags, ~ISS_RESET_ACTIVE);
6042 6041 rw_exit(iss->iss_lockp);
6043 6042 mutex_exit(&stmf_state.stmf_lock);
6044 6043 stmf_scsilib_send_status(task, STATUS_CHECK,
6045 6044 STMF_SAA_OPERATION_IN_PROGRESS);
6046 6045 return;
6047 6046 }
6048 6047 }
6049 6048 if (lf == 0) {
6050 6049 /* No luns in this session */
6051 6050 atomic_and_32(&iss->iss_flags, ~ISS_RESET_ACTIVE);
6052 6051 rw_exit(iss->iss_lockp);
6053 6052 mutex_exit(&stmf_state.stmf_lock);
6054 6053 stmf_scsilib_send_status(task, STATUS_GOOD, 0);
6055 6054 return;
6056 6055 }
6057 6056
6058 6057 /* ok, start the damage */
6059 6058 itask->itask_flags |= ITASK_DEFAULT_HANDLING |
6060 6059 ITASK_CAUSING_TARGET_RESET;
6061 6060 for (i = 0; i < lm->lm_nentries; i++) {
6062 6061 if (lm->lm_plus[i] == NULL)
6063 6062 continue;
6064 6063 lm_ent = (stmf_lun_map_ent_t *)lm->lm_plus[i];
6065 6064 ilu = (stmf_i_lu_t *)(lm_ent->ent_lu->lu_stmf_private);
6066 6065 atomic_or_32(&ilu->ilu_flags, ILU_RESET_ACTIVE);
6067 6066 }
6068 6067
6069 6068 for (i = 0; i < lm->lm_nentries; i++) {
6070 6069 if (lm->lm_plus[i] == NULL)
6071 6070 continue;
6072 6071 lm_ent = (stmf_lun_map_ent_t *)lm->lm_plus[i];
6073 6072 stmf_abort(STMF_QUEUE_ABORT_LU, task, STMF_ABORTED,
6074 6073 lm_ent->ent_lu);
6075 6074 }
6076 6075
6077 6076 rw_exit(iss->iss_lockp);
6078 6077 mutex_exit(&stmf_state.stmf_lock);
6079 6078
6080 6079 /* Start polling on this task */
6081 6080 if (stmf_task_poll_lu(task, ITASK_DEFAULT_POLL_TIMEOUT)
6082 6081 != STMF_SUCCESS) {
6083 6082 stmf_abort(STMF_QUEUE_TASK_ABORT, task, STMF_ALLOC_FAILURE,
6084 6083 NULL);
6085 6084 return;
6086 6085 }
6087 6086 }
6088 6087
6089 6088 int
6090 6089 stmf_handle_cmd_during_ic(stmf_i_scsi_task_t *itask)
6091 6090 {
6092 6091 scsi_task_t *task = itask->itask_task;
6093 6092 stmf_i_scsi_session_t *iss = (stmf_i_scsi_session_t *)
6094 6093 task->task_session->ss_stmf_private;
6095 6094
6096 6095 rw_enter(iss->iss_lockp, RW_WRITER);
6097 6096 if (((iss->iss_flags & ISS_LUN_INVENTORY_CHANGED) == 0) ||
6098 6097 (task->task_cdb[0] == SCMD_INQUIRY)) {
6099 6098 rw_exit(iss->iss_lockp);
6100 6099 return (0);
6101 6100 }
6102 6101 atomic_and_32(&iss->iss_flags,
6103 6102 ~(ISS_LUN_INVENTORY_CHANGED | ISS_GOT_INITIAL_LUNS));
6104 6103 rw_exit(iss->iss_lockp);
6105 6104
6106 6105 if (task->task_cdb[0] == SCMD_REPORT_LUNS) {
6107 6106 return (0);
6108 6107 }
6109 6108 stmf_scsilib_send_status(task, STATUS_CHECK,
6110 6109 STMF_SAA_REPORT_LUN_DATA_HAS_CHANGED);
6111 6110 return (1);
6112 6111 }
6113 6112
6114 6113 void
6115 6114 stmf_worker_init()
6116 6115 {
6117 6116 uint32_t i;
6118 6117
6119 6118 /* Make local copy of global tunables */
6120 6119 stmf_i_max_nworkers = stmf_max_nworkers;
6121 6120 stmf_i_min_nworkers = stmf_min_nworkers;
6122 6121
6123 6122 ASSERT(stmf_workers == NULL);
6124 6123 if (stmf_i_min_nworkers < 4) {
6125 6124 stmf_i_min_nworkers = 4;
6126 6125 }
6127 6126 if (stmf_i_max_nworkers < stmf_i_min_nworkers) {
6128 6127 stmf_i_max_nworkers = stmf_i_min_nworkers;
6129 6128 }
6130 6129 stmf_workers = (stmf_worker_t *)kmem_zalloc(
6131 6130 sizeof (stmf_worker_t) * stmf_i_max_nworkers, KM_SLEEP);
6132 6131 for (i = 0; i < stmf_i_max_nworkers; i++) {
6133 6132 stmf_worker_t *w = &stmf_workers[i];
6134 6133 mutex_init(&w->worker_lock, NULL, MUTEX_DRIVER, NULL);
6135 6134 cv_init(&w->worker_cv, NULL, CV_DRIVER, NULL);
6136 6135 }
6137 6136 stmf_worker_mgmt_delay = drv_usectohz(20 * 1000);
6138 6137 stmf_workers_state = STMF_WORKERS_ENABLED;
6139 6138
6140 6139 /* Workers will be started by stmf_worker_mgmt() */
6141 6140
6142 6141 /* Lets wait for atleast one worker to start */
6143 6142 while (stmf_nworkers_cur == 0)
6144 6143 delay(drv_usectohz(20 * 1000));
6145 6144 stmf_worker_mgmt_delay = drv_usectohz(3 * 1000 * 1000);
6146 6145 }
6147 6146
6148 6147 stmf_status_t
6149 6148 stmf_worker_fini()
6150 6149 {
6151 6150 int i;
6152 6151 clock_t sb;
6153 6152
6154 6153 if (stmf_workers_state == STMF_WORKERS_DISABLED)
6155 6154 return (STMF_SUCCESS);
6156 6155 ASSERT(stmf_workers);
6157 6156 stmf_workers_state = STMF_WORKERS_DISABLED;
6158 6157 stmf_worker_mgmt_delay = drv_usectohz(20 * 1000);
6159 6158 cv_signal(&stmf_state.stmf_cv);
6160 6159
6161 6160 sb = ddi_get_lbolt() + drv_usectohz(10 * 1000 * 1000);
6162 6161 /* Wait for all the threads to die */
6163 6162 while (stmf_nworkers_cur != 0) {
6164 6163 if (ddi_get_lbolt() > sb) {
6165 6164 stmf_workers_state = STMF_WORKERS_ENABLED;
6166 6165 return (STMF_BUSY);
6167 6166 }
6168 6167 delay(drv_usectohz(100 * 1000));
6169 6168 }
6170 6169 for (i = 0; i < stmf_i_max_nworkers; i++) {
6171 6170 stmf_worker_t *w = &stmf_workers[i];
6172 6171 mutex_destroy(&w->worker_lock);
6173 6172 cv_destroy(&w->worker_cv);
6174 6173 }
6175 6174 kmem_free(stmf_workers, sizeof (stmf_worker_t) * stmf_i_max_nworkers);
6176 6175 stmf_workers = NULL;
6177 6176
6178 6177 return (STMF_SUCCESS);
6179 6178 }
6180 6179
6181 6180 void
6182 6181 stmf_worker_task(void *arg)
6183 6182 {
6184 6183 stmf_worker_t *w;
6185 6184 stmf_i_scsi_session_t *iss;
6186 6185 scsi_task_t *task;
6187 6186 stmf_i_scsi_task_t *itask;
6188 6187 stmf_data_buf_t *dbuf;
6189 6188 stmf_lu_t *lu;
6190 6189 clock_t wait_timer = 0;
6191 6190 clock_t wait_ticks, wait_delta = 0;
6192 6191 uint32_t old, new;
6193 6192 uint8_t curcmd;
6194 6193 uint8_t abort_free;
6195 6194 uint8_t wait_queue;
6196 6195 uint8_t dec_qdepth;
6197 6196
6198 6197 w = (stmf_worker_t *)arg;
6199 6198 wait_ticks = drv_usectohz(10000);
6200 6199
6201 6200 DTRACE_PROBE1(worker__create, stmf_worker_t, w);
6202 6201 mutex_enter(&w->worker_lock);
6203 6202 w->worker_flags |= STMF_WORKER_STARTED | STMF_WORKER_ACTIVE;
6204 6203 stmf_worker_loop:;
6205 6204 if ((w->worker_ref_count == 0) &&
6206 6205 (w->worker_flags & STMF_WORKER_TERMINATE)) {
6207 6206 w->worker_flags &= ~(STMF_WORKER_STARTED |
6208 6207 STMF_WORKER_ACTIVE | STMF_WORKER_TERMINATE);
6209 6208 w->worker_tid = NULL;
6210 6209 mutex_exit(&w->worker_lock);
6211 6210 DTRACE_PROBE1(worker__destroy, stmf_worker_t, w);
6212 6211 thread_exit();
6213 6212 }
6214 6213 /* CONSTCOND */
6215 6214 while (1) {
6216 6215 dec_qdepth = 0;
6217 6216 if (wait_timer && (ddi_get_lbolt() >= wait_timer)) {
6218 6217 wait_timer = 0;
6219 6218 wait_delta = 0;
6220 6219 if (w->worker_wait_head) {
6221 6220 ASSERT(w->worker_wait_tail);
6222 6221 if (w->worker_task_head == NULL)
6223 6222 w->worker_task_head =
6224 6223 w->worker_wait_head;
6225 6224 else
6226 6225 w->worker_task_tail->itask_worker_next =
6227 6226 w->worker_wait_head;
6228 6227 w->worker_task_tail = w->worker_wait_tail;
6229 6228 w->worker_wait_head = w->worker_wait_tail =
6230 6229 NULL;
6231 6230 }
6232 6231 }
6233 6232 if ((itask = w->worker_task_head) == NULL) {
6234 6233 break;
6235 6234 }
6236 6235 task = itask->itask_task;
6237 6236 DTRACE_PROBE2(worker__active, stmf_worker_t, w,
6238 6237 scsi_task_t *, task);
6239 6238 w->worker_task_head = itask->itask_worker_next;
6240 6239 if (w->worker_task_head == NULL)
6241 6240 w->worker_task_tail = NULL;
6242 6241
6243 6242 wait_queue = 0;
6244 6243 abort_free = 0;
6245 6244 if (itask->itask_ncmds > 0) {
6246 6245 curcmd = itask->itask_cmd_stack[itask->itask_ncmds - 1];
6247 6246 } else {
6248 6247 ASSERT(itask->itask_flags & ITASK_BEING_ABORTED);
6249 6248 }
6250 6249 do {
6251 6250 old = itask->itask_flags;
6252 6251 if (old & ITASK_BEING_ABORTED) {
6253 6252 itask->itask_ncmds = 1;
6254 6253 curcmd = itask->itask_cmd_stack[0] =
6255 6254 ITASK_CMD_ABORT;
6256 6255 goto out_itask_flag_loop;
6257 6256 } else if ((curcmd & ITASK_CMD_MASK) ==
6258 6257 ITASK_CMD_NEW_TASK) {
6259 6258 /*
6260 6259 * set ITASK_KSTAT_IN_RUNQ, this flag
6261 6260 * will not reset until task completed
6262 6261 */
6263 6262 new = old | ITASK_KNOWN_TO_LU |
6264 6263 ITASK_KSTAT_IN_RUNQ;
6265 6264 } else {
6266 6265 goto out_itask_flag_loop;
6267 6266 }
6268 6267 } while (atomic_cas_32(&itask->itask_flags, old, new) != old);
6269 6268
6270 6269 out_itask_flag_loop:
6271 6270
6272 6271 /*
6273 6272 * Decide if this task needs to go to a queue and/or if
6274 6273 * we can decrement the itask_cmd_stack.
6275 6274 */
6276 6275 if (curcmd == ITASK_CMD_ABORT) {
6277 6276 if (itask->itask_flags & (ITASK_KNOWN_TO_LU |
6278 6277 ITASK_KNOWN_TO_TGT_PORT)) {
6279 6278 wait_queue = 1;
6280 6279 } else {
6281 6280 abort_free = 1;
6282 6281 }
6283 6282 } else if ((curcmd & ITASK_CMD_POLL) &&
6284 6283 (itask->itask_poll_timeout > ddi_get_lbolt())) {
6285 6284 wait_queue = 1;
6286 6285 }
6287 6286
6288 6287 if (wait_queue) {
6289 6288 itask->itask_worker_next = NULL;
6290 6289 if (w->worker_wait_tail) {
6291 6290 w->worker_wait_tail->itask_worker_next = itask;
6292 6291 } else {
6293 6292 w->worker_wait_head = itask;
6294 6293 }
6295 6294 w->worker_wait_tail = itask;
6296 6295 if (wait_timer == 0) {
6297 6296 wait_timer = ddi_get_lbolt() + wait_ticks;
6298 6297 wait_delta = wait_ticks;
6299 6298 }
6300 6299 } else if ((--(itask->itask_ncmds)) != 0) {
6301 6300 itask->itask_worker_next = NULL;
6302 6301 if (w->worker_task_tail) {
6303 6302 w->worker_task_tail->itask_worker_next = itask;
6304 6303 } else {
6305 6304 w->worker_task_head = itask;
6306 6305 }
6307 6306 w->worker_task_tail = itask;
6308 6307 } else {
6309 6308 atomic_and_32(&itask->itask_flags,
6310 6309 ~ITASK_IN_WORKER_QUEUE);
6311 6310 /*
6312 6311 * This is where the queue depth should go down by
6313 6312 * one but we delay that on purpose to account for
6314 6313 * the call into the provider. The actual decrement
6315 6314 * happens after the worker has done its job.
6316 6315 */
6317 6316 dec_qdepth = 1;
6318 6317 itask->itask_waitq_time +=
6319 6318 gethrtime() - itask->itask_waitq_enter_timestamp;
6320 6319 }
6321 6320
6322 6321 /* We made it here means we are going to call LU */
6323 6322 if ((itask->itask_flags & ITASK_DEFAULT_HANDLING) == 0)
6324 6323 lu = task->task_lu;
6325 6324 else
6326 6325 lu = dlun0;
6327 6326 dbuf = itask->itask_dbufs[ITASK_CMD_BUF_NDX(curcmd)];
6328 6327 mutex_exit(&w->worker_lock);
6329 6328 curcmd &= ITASK_CMD_MASK;
6330 6329 stmf_task_audit(itask, TE_PROCESS_CMD, curcmd, dbuf);
6331 6330 switch (curcmd) {
6332 6331 case ITASK_CMD_NEW_TASK:
6333 6332 iss = (stmf_i_scsi_session_t *)
6334 6333 task->task_session->ss_stmf_private;
6335 6334 stmf_itl_lu_new_task(itask);
6336 6335 if (iss->iss_flags & ISS_LUN_INVENTORY_CHANGED) {
6337 6336 if (stmf_handle_cmd_during_ic(itask))
6338 6337 break;
6339 6338 }
6340 6339 #ifdef DEBUG
6341 6340 if (stmf_drop_task_counter > 0) {
6342 6341 if (atomic_dec_32_nv(&stmf_drop_task_counter)
6343 6342 == 1)
6344 6343 break;
6345 6344 }
6346 6345 #endif
6347 6346 DTRACE_PROBE1(scsi__task__start, scsi_task_t *, task);
6348 6347 lu->lu_new_task(task, dbuf);
6349 6348 break;
6350 6349 case ITASK_CMD_DATA_XFER_DONE:
6351 6350 lu->lu_dbuf_xfer_done(task, dbuf);
6352 6351 break;
6353 6352 case ITASK_CMD_STATUS_DONE:
6354 6353 lu->lu_send_status_done(task);
6355 6354 break;
6356 6355 case ITASK_CMD_ABORT:
6357 6356 if (abort_free) {
6358 6357 stmf_task_free(task);
6359 6358 } else {
6360 6359 stmf_do_task_abort(task);
6361 6360 }
6362 6361 break;
6363 6362 case ITASK_CMD_POLL_LU:
6364 6363 if (!wait_queue) {
6365 6364 lu->lu_task_poll(task);
6366 6365 }
6367 6366 break;
6368 6367 case ITASK_CMD_POLL_LPORT:
6369 6368 if (!wait_queue)
6370 6369 task->task_lport->lport_task_poll(task);
6371 6370 break;
6372 6371 case ITASK_CMD_SEND_STATUS:
6373 6372 /* case ITASK_CMD_XFER_DATA: */
6374 6373 break;
6375 6374 }
6376 6375 mutex_enter(&w->worker_lock);
6377 6376 if (dec_qdepth) {
6378 6377 w->worker_queue_depth--;
6379 6378 }
6380 6379 }
6381 6380 if ((w->worker_flags & STMF_WORKER_TERMINATE) && (wait_timer == 0)) {
6382 6381 if (w->worker_ref_count == 0)
6383 6382 goto stmf_worker_loop;
6384 6383 else {
6385 6384 wait_timer = ddi_get_lbolt() + 1;
6386 6385 wait_delta = 1;
6387 6386 }
6388 6387 }
6389 6388 w->worker_flags &= ~STMF_WORKER_ACTIVE;
6390 6389 if (wait_timer) {
6391 6390 DTRACE_PROBE1(worker__timed__sleep, stmf_worker_t, w);
6392 6391 (void) cv_reltimedwait(&w->worker_cv, &w->worker_lock,
6393 6392 wait_delta, TR_CLOCK_TICK);
6394 6393 } else {
6395 6394 DTRACE_PROBE1(worker__sleep, stmf_worker_t, w);
6396 6395 cv_wait(&w->worker_cv, &w->worker_lock);
6397 6396 }
6398 6397 DTRACE_PROBE1(worker__wakeup, stmf_worker_t, w);
6399 6398 w->worker_flags |= STMF_WORKER_ACTIVE;
6400 6399 goto stmf_worker_loop;
6401 6400 }
6402 6401
6403 6402 void
6404 6403 stmf_worker_mgmt()
6405 6404 {
6406 6405 int i;
6407 6406 int workers_needed;
6408 6407 uint32_t qd;
6409 6408 clock_t tps, d = 0;
6410 6409 uint32_t cur_max_ntasks = 0;
6411 6410 stmf_worker_t *w;
6412 6411
6413 6412 /* Check if we are trying to increase the # of threads */
6414 6413 for (i = stmf_nworkers_cur; i < stmf_nworkers_needed; i++) {
6415 6414 if (stmf_workers[i].worker_flags & STMF_WORKER_STARTED) {
6416 6415 stmf_nworkers_cur++;
6417 6416 stmf_nworkers_accepting_cmds++;
6418 6417 } else {
6419 6418 /* Wait for transition to complete */
6420 6419 return;
6421 6420 }
6422 6421 }
6423 6422 /* Check if we are trying to decrease the # of workers */
6424 6423 for (i = (stmf_nworkers_cur - 1); i >= stmf_nworkers_needed; i--) {
6425 6424 if ((stmf_workers[i].worker_flags & STMF_WORKER_STARTED) == 0) {
6426 6425 stmf_nworkers_cur--;
6427 6426 /*
6428 6427 * stmf_nworkers_accepting_cmds has already been
6429 6428 * updated by the request to reduce the # of workers.
6430 6429 */
6431 6430 } else {
6432 6431 /* Wait for transition to complete */
6433 6432 return;
6434 6433 }
6435 6434 }
6436 6435 /* Check if we are being asked to quit */
6437 6436 if (stmf_workers_state != STMF_WORKERS_ENABLED) {
6438 6437 if (stmf_nworkers_cur) {
6439 6438 workers_needed = 0;
6440 6439 goto worker_mgmt_trigger_change;
6441 6440 }
6442 6441 return;
6443 6442 }
6444 6443 /* Check if we are starting */
6445 6444 if (stmf_nworkers_cur < stmf_i_min_nworkers) {
6446 6445 workers_needed = stmf_i_min_nworkers;
6447 6446 goto worker_mgmt_trigger_change;
6448 6447 }
6449 6448
6450 6449 tps = drv_usectohz(1 * 1000 * 1000);
6451 6450 if ((stmf_wm_last != 0) &&
6452 6451 ((d = ddi_get_lbolt() - stmf_wm_last) > tps)) {
6453 6452 qd = 0;
6454 6453 for (i = 0; i < stmf_nworkers_accepting_cmds; i++) {
6455 6454 qd += stmf_workers[i].worker_max_qdepth_pu;
6456 6455 stmf_workers[i].worker_max_qdepth_pu = 0;
6457 6456 if (stmf_workers[i].worker_max_sys_qdepth_pu >
6458 6457 cur_max_ntasks) {
6459 6458 cur_max_ntasks =
6460 6459 stmf_workers[i].worker_max_sys_qdepth_pu;
6461 6460 }
6462 6461 stmf_workers[i].worker_max_sys_qdepth_pu = 0;
6463 6462 }
6464 6463 }
6465 6464 stmf_wm_last = ddi_get_lbolt();
6466 6465 if (d <= tps) {
6467 6466 /* still ramping up */
6468 6467 return;
6469 6468 }
6470 6469 /* max qdepth cannot be more than max tasks */
6471 6470 if (qd > cur_max_ntasks)
6472 6471 qd = cur_max_ntasks;
6473 6472
6474 6473 /* See if we have more workers */
6475 6474 if (qd < stmf_nworkers_accepting_cmds) {
6476 6475 /*
6477 6476 * Since we dont reduce the worker count right away, monitor
6478 6477 * the highest load during the scale_down_delay.
6479 6478 */
6480 6479 if (qd > stmf_worker_scale_down_qd)
6481 6480 stmf_worker_scale_down_qd = qd;
6482 6481 if (stmf_worker_scale_down_timer == 0) {
6483 6482 stmf_worker_scale_down_timer = ddi_get_lbolt() +
6484 6483 drv_usectohz(stmf_worker_scale_down_delay *
6485 6484 1000 * 1000);
6486 6485 return;
6487 6486 }
6488 6487 if (ddi_get_lbolt() < stmf_worker_scale_down_timer) {
6489 6488 return;
6490 6489 }
6491 6490 /* Its time to reduce the workers */
6492 6491 if (stmf_worker_scale_down_qd < stmf_i_min_nworkers)
6493 6492 stmf_worker_scale_down_qd = stmf_i_min_nworkers;
6494 6493 if (stmf_worker_scale_down_qd > stmf_i_max_nworkers)
6495 6494 stmf_worker_scale_down_qd = stmf_i_max_nworkers;
6496 6495 if (stmf_worker_scale_down_qd == stmf_nworkers_cur)
6497 6496 return;
6498 6497 workers_needed = stmf_worker_scale_down_qd;
6499 6498 stmf_worker_scale_down_qd = 0;
6500 6499 goto worker_mgmt_trigger_change;
6501 6500 }
6502 6501 stmf_worker_scale_down_qd = 0;
6503 6502 stmf_worker_scale_down_timer = 0;
6504 6503 if (qd > stmf_i_max_nworkers)
6505 6504 qd = stmf_i_max_nworkers;
6506 6505 if (qd < stmf_i_min_nworkers)
6507 6506 qd = stmf_i_min_nworkers;
6508 6507 if (qd == stmf_nworkers_cur)
6509 6508 return;
6510 6509 workers_needed = qd;
6511 6510 goto worker_mgmt_trigger_change;
6512 6511
6513 6512 /* NOTREACHED */
6514 6513 return;
6515 6514
6516 6515 worker_mgmt_trigger_change:
6517 6516 ASSERT(workers_needed != stmf_nworkers_cur);
6518 6517 if (workers_needed > stmf_nworkers_cur) {
6519 6518 stmf_nworkers_needed = workers_needed;
6520 6519 for (i = stmf_nworkers_cur; i < workers_needed; i++) {
6521 6520 w = &stmf_workers[i];
6522 6521 w->worker_tid = thread_create(NULL, 0, stmf_worker_task,
6523 6522 (void *)&stmf_workers[i], 0, &p0, TS_RUN,
6524 6523 minclsyspri);
6525 6524 }
6526 6525 return;
6527 6526 }
6528 6527 /* At this point we know that we are decreasing the # of workers */
6529 6528 stmf_nworkers_accepting_cmds = workers_needed;
6530 6529 stmf_nworkers_needed = workers_needed;
6531 6530 /* Signal the workers that its time to quit */
6532 6531 for (i = (stmf_nworkers_cur - 1); i >= stmf_nworkers_needed; i--) {
6533 6532 w = &stmf_workers[i];
6534 6533 ASSERT(w && (w->worker_flags & STMF_WORKER_STARTED));
6535 6534 mutex_enter(&w->worker_lock);
6536 6535 w->worker_flags |= STMF_WORKER_TERMINATE;
6537 6536 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0)
6538 6537 cv_signal(&w->worker_cv);
6539 6538 mutex_exit(&w->worker_lock);
6540 6539 }
6541 6540 }
6542 6541
6543 6542 /*
6544 6543 * Fills out a dbuf from stmf_xfer_data_t (contained in the db_lu_private).
6545 6544 * If all the data has been filled out, frees the xd and makes
6546 6545 * db_lu_private NULL.
6547 6546 */
6548 6547 void
6549 6548 stmf_xd_to_dbuf(stmf_data_buf_t *dbuf, int set_rel_off)
6550 6549 {
6551 6550 stmf_xfer_data_t *xd;
6552 6551 uint8_t *p;
6553 6552 int i;
6554 6553 uint32_t s;
6555 6554
6556 6555 xd = (stmf_xfer_data_t *)dbuf->db_lu_private;
6557 6556 dbuf->db_data_size = 0;
6558 6557 if (set_rel_off)
6559 6558 dbuf->db_relative_offset = xd->size_done;
6560 6559 for (i = 0; i < dbuf->db_sglist_length; i++) {
6561 6560 s = min(xd->size_left, dbuf->db_sglist[i].seg_length);
6562 6561 p = &xd->buf[xd->size_done];
6563 6562 bcopy(p, dbuf->db_sglist[i].seg_addr, s);
6564 6563 xd->size_left -= s;
6565 6564 xd->size_done += s;
6566 6565 dbuf->db_data_size += s;
6567 6566 if (xd->size_left == 0) {
6568 6567 kmem_free(xd, xd->alloc_size);
6569 6568 dbuf->db_lu_private = NULL;
6570 6569 return;
6571 6570 }
6572 6571 }
6573 6572 }
6574 6573
6575 6574 /* ARGSUSED */
6576 6575 stmf_status_t
6577 6576 stmf_dlun0_task_alloc(scsi_task_t *task)
6578 6577 {
6579 6578 return (STMF_SUCCESS);
6580 6579 }
6581 6580
6582 6581 void
6583 6582 stmf_dlun0_new_task(scsi_task_t *task, stmf_data_buf_t *dbuf)
6584 6583 {
6585 6584 uint8_t *cdbp = (uint8_t *)&task->task_cdb[0];
6586 6585 stmf_i_scsi_session_t *iss;
6587 6586 uint32_t sz, minsz;
6588 6587 uint8_t *p;
6589 6588 stmf_xfer_data_t *xd;
6590 6589 uint8_t inq_page_length = 31;
6591 6590
6592 6591 if (task->task_mgmt_function) {
6593 6592 stmf_scsilib_handle_task_mgmt(task);
6594 6593 return;
6595 6594 }
6596 6595
6597 6596 switch (cdbp[0]) {
6598 6597 case SCMD_INQUIRY:
6599 6598 /*
6600 6599 * Basic protocol checks. In addition, only reply to
6601 6600 * standard inquiry. Otherwise, the LU provider needs
6602 6601 * to respond.
6603 6602 */
6604 6603
6605 6604 if (cdbp[2] || (cdbp[1] & 1) || cdbp[5]) {
6606 6605 stmf_scsilib_send_status(task, STATUS_CHECK,
6607 6606 STMF_SAA_INVALID_FIELD_IN_CDB);
6608 6607 return;
6609 6608 }
6610 6609
6611 6610 task->task_cmd_xfer_length =
6612 6611 (((uint32_t)cdbp[3]) << 8) | cdbp[4];
6613 6612
6614 6613 if (task->task_additional_flags &
6615 6614 TASK_AF_NO_EXPECTED_XFER_LENGTH) {
6616 6615 task->task_expected_xfer_length =
6617 6616 task->task_cmd_xfer_length;
6618 6617 }
6619 6618
6620 6619 sz = min(task->task_expected_xfer_length,
6621 6620 min(36, task->task_cmd_xfer_length));
6622 6621 minsz = 36;
6623 6622
6624 6623 if (sz == 0) {
6625 6624 stmf_scsilib_send_status(task, STATUS_GOOD, 0);
6626 6625 return;
6627 6626 }
6628 6627
6629 6628 if (dbuf && (dbuf->db_sglist[0].seg_length < 36)) {
6630 6629 /*
6631 6630 * Ignore any preallocated dbuf if the size is less
6632 6631 * than 36. It will be freed during the task_free.
6633 6632 */
6634 6633 dbuf = NULL;
6635 6634 }
6636 6635 if (dbuf == NULL)
6637 6636 dbuf = stmf_alloc_dbuf(task, minsz, &minsz, 0);
6638 6637 if ((dbuf == NULL) || (dbuf->db_sglist[0].seg_length < sz)) {
6639 6638 stmf_abort(STMF_QUEUE_TASK_ABORT, task,
6640 6639 STMF_ALLOC_FAILURE, NULL);
6641 6640 return;
6642 6641 }
6643 6642 dbuf->db_lu_private = NULL;
6644 6643
6645 6644 p = dbuf->db_sglist[0].seg_addr;
6646 6645
6647 6646 /*
6648 6647 * Standard inquiry handling only.
6649 6648 */
6650 6649
6651 6650 bzero(p, inq_page_length + 5);
6652 6651
6653 6652 p[0] = DPQ_SUPPORTED | DTYPE_UNKNOWN;
6654 6653 p[2] = 5;
6655 6654 p[3] = 0x12;
6656 6655 p[4] = inq_page_length;
6657 6656 p[6] = 0x80;
6658 6657
6659 6658 (void) strncpy((char *)p+8, "SUN ", 8);
6660 6659 (void) strncpy((char *)p+16, "COMSTAR ", 16);
6661 6660 (void) strncpy((char *)p+32, "1.0 ", 4);
6662 6661
6663 6662 dbuf->db_data_size = sz;
6664 6663 dbuf->db_relative_offset = 0;
6665 6664 dbuf->db_flags = DB_DIRECTION_TO_RPORT;
6666 6665 (void) stmf_xfer_data(task, dbuf, 0);
6667 6666
6668 6667 return;
6669 6668
6670 6669 case SCMD_REPORT_LUNS:
6671 6670 task->task_cmd_xfer_length =
6672 6671 ((((uint32_t)task->task_cdb[6]) << 24) |
6673 6672 (((uint32_t)task->task_cdb[7]) << 16) |
6674 6673 (((uint32_t)task->task_cdb[8]) << 8) |
6675 6674 ((uint32_t)task->task_cdb[9]));
6676 6675
6677 6676 if (task->task_additional_flags &
6678 6677 TASK_AF_NO_EXPECTED_XFER_LENGTH) {
6679 6678 task->task_expected_xfer_length =
6680 6679 task->task_cmd_xfer_length;
6681 6680 }
6682 6681
6683 6682 sz = min(task->task_expected_xfer_length,
6684 6683 task->task_cmd_xfer_length);
6685 6684
6686 6685 if (sz < 16) {
6687 6686 stmf_scsilib_send_status(task, STATUS_CHECK,
6688 6687 STMF_SAA_INVALID_FIELD_IN_CDB);
6689 6688 return;
6690 6689 }
6691 6690
6692 6691 iss = (stmf_i_scsi_session_t *)
6693 6692 task->task_session->ss_stmf_private;
6694 6693 rw_enter(iss->iss_lockp, RW_WRITER);
6695 6694 xd = stmf_session_prepare_report_lun_data(iss->iss_sm);
6696 6695 rw_exit(iss->iss_lockp);
6697 6696
6698 6697 if (xd == NULL) {
6699 6698 stmf_abort(STMF_QUEUE_TASK_ABORT, task,
6700 6699 STMF_ALLOC_FAILURE, NULL);
6701 6700 return;
6702 6701 }
6703 6702
6704 6703 sz = min(sz, xd->size_left);
6705 6704 xd->size_left = sz;
6706 6705 minsz = min(512, sz);
6707 6706
6708 6707 if (dbuf == NULL)
6709 6708 dbuf = stmf_alloc_dbuf(task, sz, &minsz, 0);
6710 6709 if (dbuf == NULL) {
6711 6710 kmem_free(xd, xd->alloc_size);
6712 6711 stmf_abort(STMF_QUEUE_TASK_ABORT, task,
6713 6712 STMF_ALLOC_FAILURE, NULL);
6714 6713 return;
6715 6714 }
6716 6715 dbuf->db_lu_private = xd;
6717 6716 stmf_xd_to_dbuf(dbuf, 1);
6718 6717
6719 6718 atomic_and_32(&iss->iss_flags,
6720 6719 ~(ISS_LUN_INVENTORY_CHANGED | ISS_GOT_INITIAL_LUNS));
6721 6720 dbuf->db_flags = DB_DIRECTION_TO_RPORT;
6722 6721 (void) stmf_xfer_data(task, dbuf, 0);
6723 6722 return;
6724 6723 }
6725 6724
6726 6725 stmf_scsilib_send_status(task, STATUS_CHECK, STMF_SAA_INVALID_OPCODE);
6727 6726 }
6728 6727
6729 6728 void
6730 6729 stmf_dlun0_dbuf_done(scsi_task_t *task, stmf_data_buf_t *dbuf)
6731 6730 {
6732 6731 stmf_i_scsi_task_t *itask =
6733 6732 (stmf_i_scsi_task_t *)task->task_stmf_private;
6734 6733
6735 6734 if (dbuf->db_xfer_status != STMF_SUCCESS) {
6736 6735 stmf_abort(STMF_QUEUE_TASK_ABORT, task,
6737 6736 dbuf->db_xfer_status, NULL);
6738 6737 return;
6739 6738 }
6740 6739 task->task_nbytes_transferred += dbuf->db_data_size;
6741 6740 if (dbuf->db_lu_private) {
6742 6741 /* There is more */
6743 6742 stmf_xd_to_dbuf(dbuf, 1);
6744 6743 (void) stmf_xfer_data(task, dbuf, 0);
6745 6744 return;
6746 6745 }
6747 6746
6748 6747 stmf_free_dbuf(task, dbuf);
6749 6748 /*
6750 6749 * If this is a proxy task, it will need to be completed from the
6751 6750 * proxy port provider. This message lets pppt know that the xfer
6752 6751 * is complete. When we receive the status from pppt, we will
6753 6752 * then relay that status back to the lport.
6754 6753 */
6755 6754 if (itask->itask_flags & ITASK_PROXY_TASK) {
6756 6755 stmf_ic_msg_t *ic_xfer_done_msg = NULL;
6757 6756 stmf_status_t ic_ret = STMF_FAILURE;
6758 6757 uint64_t session_msg_id;
6759 6758 mutex_enter(&stmf_state.stmf_lock);
6760 6759 session_msg_id = stmf_proxy_msg_id++;
6761 6760 mutex_exit(&stmf_state.stmf_lock);
6762 6761 /* send xfer done status to pppt */
6763 6762 ic_xfer_done_msg = ic_scsi_data_xfer_done_msg_alloc(
6764 6763 itask->itask_proxy_msg_id,
6765 6764 task->task_session->ss_session_id,
6766 6765 STMF_SUCCESS, session_msg_id);
6767 6766 if (ic_xfer_done_msg) {
6768 6767 ic_ret = ic_tx_msg(ic_xfer_done_msg);
6769 6768 if (ic_ret != STMF_IC_MSG_SUCCESS) {
6770 6769 cmn_err(CE_WARN, "unable to xmit session msg");
6771 6770 }
6772 6771 }
6773 6772 /* task will be completed from pppt */
6774 6773 return;
6775 6774 }
6776 6775 stmf_scsilib_send_status(task, STATUS_GOOD, 0);
6777 6776 }
6778 6777
6779 6778 /* ARGSUSED */
6780 6779 void
6781 6780 stmf_dlun0_status_done(scsi_task_t *task)
6782 6781 {
6783 6782 }
6784 6783
6785 6784 /* ARGSUSED */
6786 6785 void
6787 6786 stmf_dlun0_task_free(scsi_task_t *task)
6788 6787 {
6789 6788 }
6790 6789
6791 6790 /* ARGSUSED */
6792 6791 stmf_status_t
6793 6792 stmf_dlun0_abort(struct stmf_lu *lu, int abort_cmd, void *arg, uint32_t flags)
6794 6793 {
6795 6794 scsi_task_t *task = (scsi_task_t *)arg;
6796 6795 stmf_i_scsi_task_t *itask =
6797 6796 (stmf_i_scsi_task_t *)task->task_stmf_private;
6798 6797 stmf_i_lu_t *ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private;
6799 6798 int i;
6800 6799 uint8_t map;
6801 6800
6802 6801 if ((task->task_mgmt_function) && (itask->itask_flags &
6803 6802 (ITASK_CAUSING_LU_RESET | ITASK_CAUSING_TARGET_RESET))) {
6804 6803 switch (task->task_mgmt_function) {
6805 6804 case TM_ABORT_TASK:
6806 6805 case TM_ABORT_TASK_SET:
6807 6806 case TM_CLEAR_TASK_SET:
6808 6807 case TM_LUN_RESET:
6809 6808 atomic_and_32(&ilu->ilu_flags, ~ILU_RESET_ACTIVE);
6810 6809 break;
6811 6810 case TM_TARGET_RESET:
6812 6811 case TM_TARGET_COLD_RESET:
6813 6812 case TM_TARGET_WARM_RESET:
6814 6813 stmf_abort_target_reset(task);
6815 6814 break;
6816 6815 }
6817 6816 return (STMF_ABORT_SUCCESS);
6818 6817 }
6819 6818
6820 6819 /*
6821 6820 * OK so its not a task mgmt. Make sure we free any xd sitting
6822 6821 * inside any dbuf.
6823 6822 */
6824 6823 if ((map = itask->itask_allocated_buf_map) != 0) {
6825 6824 for (i = 0; i < 4; i++) {
6826 6825 if ((map & 1) &&
6827 6826 ((itask->itask_dbufs[i])->db_lu_private)) {
6828 6827 stmf_xfer_data_t *xd;
6829 6828 stmf_data_buf_t *dbuf;
6830 6829
6831 6830 dbuf = itask->itask_dbufs[i];
6832 6831 xd = (stmf_xfer_data_t *)dbuf->db_lu_private;
6833 6832 dbuf->db_lu_private = NULL;
6834 6833 kmem_free(xd, xd->alloc_size);
6835 6834 }
6836 6835 map >>= 1;
6837 6836 }
6838 6837 }
6839 6838 return (STMF_ABORT_SUCCESS);
6840 6839 }
6841 6840
6842 6841 void
6843 6842 stmf_dlun0_task_poll(struct scsi_task *task)
6844 6843 {
6845 6844 /* Right now we only do this for handling task management functions */
6846 6845 ASSERT(task->task_mgmt_function);
6847 6846
6848 6847 switch (task->task_mgmt_function) {
6849 6848 case TM_ABORT_TASK:
6850 6849 case TM_ABORT_TASK_SET:
6851 6850 case TM_CLEAR_TASK_SET:
6852 6851 case TM_LUN_RESET:
6853 6852 (void) stmf_lun_reset_poll(task->task_lu, task, 0);
6854 6853 return;
6855 6854 case TM_TARGET_RESET:
6856 6855 case TM_TARGET_COLD_RESET:
6857 6856 case TM_TARGET_WARM_RESET:
6858 6857 stmf_target_reset_poll(task);
6859 6858 return;
6860 6859 }
6861 6860 }
6862 6861
6863 6862 /* ARGSUSED */
6864 6863 void
6865 6864 stmf_dlun0_ctl(struct stmf_lu *lu, int cmd, void *arg)
6866 6865 {
6867 6866 /* This function will never be called */
6868 6867 cmn_err(CE_WARN, "stmf_dlun0_ctl called with cmd %x", cmd);
6869 6868 }
6870 6869
6871 6870 void
6872 6871 stmf_dlun_init()
6873 6872 {
6874 6873 stmf_i_lu_t *ilu;
6875 6874
6876 6875 dlun0 = stmf_alloc(STMF_STRUCT_STMF_LU, 0, 0);
6877 6876 dlun0->lu_task_alloc = stmf_dlun0_task_alloc;
6878 6877 dlun0->lu_new_task = stmf_dlun0_new_task;
6879 6878 dlun0->lu_dbuf_xfer_done = stmf_dlun0_dbuf_done;
6880 6879 dlun0->lu_send_status_done = stmf_dlun0_status_done;
6881 6880 dlun0->lu_task_free = stmf_dlun0_task_free;
6882 6881 dlun0->lu_abort = stmf_dlun0_abort;
6883 6882 dlun0->lu_task_poll = stmf_dlun0_task_poll;
6884 6883 dlun0->lu_ctl = stmf_dlun0_ctl;
6885 6884
6886 6885 ilu = (stmf_i_lu_t *)dlun0->lu_stmf_private;
6887 6886 ilu->ilu_cur_task_cntr = &ilu->ilu_task_cntr1;
6888 6887 }
6889 6888
6890 6889 stmf_status_t
6891 6890 stmf_dlun_fini()
6892 6891 {
6893 6892 stmf_i_lu_t *ilu;
6894 6893
6895 6894 ilu = (stmf_i_lu_t *)dlun0->lu_stmf_private;
6896 6895
6897 6896 ASSERT(ilu->ilu_ntasks == ilu->ilu_ntasks_free);
6898 6897 if (ilu->ilu_ntasks) {
6899 6898 stmf_i_scsi_task_t *itask, *nitask;
6900 6899
6901 6900 nitask = ilu->ilu_tasks;
6902 6901 do {
6903 6902 itask = nitask;
6904 6903 nitask = itask->itask_lu_next;
6905 6904 dlun0->lu_task_free(itask->itask_task);
6906 6905 stmf_free(itask->itask_task);
6907 6906 } while (nitask != NULL);
6908 6907
6909 6908 }
6910 6909 stmf_free(dlun0);
6911 6910 return (STMF_SUCCESS);
6912 6911 }
6913 6912
6914 6913 void
6915 6914 stmf_abort_target_reset(scsi_task_t *task)
6916 6915 {
6917 6916 stmf_i_scsi_session_t *iss = (stmf_i_scsi_session_t *)
6918 6917 task->task_session->ss_stmf_private;
6919 6918 stmf_lun_map_t *lm;
6920 6919 stmf_lun_map_ent_t *lm_ent;
6921 6920 stmf_i_lu_t *ilu;
6922 6921 int i;
6923 6922
6924 6923 rw_enter(iss->iss_lockp, RW_READER);
6925 6924 lm = iss->iss_sm;
6926 6925 for (i = 0; i < lm->lm_nentries; i++) {
6927 6926 if (lm->lm_plus[i] == NULL)
6928 6927 continue;
6929 6928 lm_ent = (stmf_lun_map_ent_t *)lm->lm_plus[i];
6930 6929 ilu = (stmf_i_lu_t *)lm_ent->ent_lu->lu_stmf_private;
6931 6930 if (ilu->ilu_flags & ILU_RESET_ACTIVE) {
6932 6931 atomic_and_32(&ilu->ilu_flags, ~ILU_RESET_ACTIVE);
6933 6932 }
6934 6933 }
6935 6934 atomic_and_32(&iss->iss_flags, ~ISS_RESET_ACTIVE);
6936 6935 rw_exit(iss->iss_lockp);
6937 6936 }
6938 6937
6939 6938 /*
6940 6939 * The return value is only used by function managing target reset.
6941 6940 */
6942 6941 stmf_status_t
6943 6942 stmf_lun_reset_poll(stmf_lu_t *lu, struct scsi_task *task, int target_reset)
6944 6943 {
6945 6944 stmf_i_lu_t *ilu = (stmf_i_lu_t *)lu->lu_stmf_private;
6946 6945 int ntasks_pending;
6947 6946
6948 6947 ntasks_pending = ilu->ilu_ntasks - ilu->ilu_ntasks_free;
6949 6948 /*
6950 6949 * This function is also used during Target reset. The idea is that
6951 6950 * once all the commands are aborted, call the LU's reset entry
6952 6951 * point (abort entry point with a reset flag). But if this Task
6953 6952 * mgmt is running on this LU then all the tasks cannot be aborted.
6954 6953 * one task (this task) will still be running which is OK.
6955 6954 */
6956 6955 if ((ntasks_pending == 0) || ((task->task_lu == lu) &&
6957 6956 (ntasks_pending == 1))) {
6958 6957 stmf_status_t ret;
6959 6958
6960 6959 if ((task->task_mgmt_function == TM_LUN_RESET) ||
6961 6960 (task->task_mgmt_function == TM_TARGET_RESET) ||
6962 6961 (task->task_mgmt_function == TM_TARGET_WARM_RESET) ||
6963 6962 (task->task_mgmt_function == TM_TARGET_COLD_RESET)) {
6964 6963 ret = lu->lu_abort(lu, STMF_LU_RESET_STATE, task, 0);
6965 6964 } else {
6966 6965 ret = STMF_SUCCESS;
6967 6966 }
6968 6967 if (ret == STMF_SUCCESS) {
6969 6968 atomic_and_32(&ilu->ilu_flags, ~ILU_RESET_ACTIVE);
6970 6969 }
6971 6970 if (target_reset) {
6972 6971 return (ret);
6973 6972 }
6974 6973 if (ret == STMF_SUCCESS) {
6975 6974 stmf_scsilib_send_status(task, STATUS_GOOD, 0);
6976 6975 return (ret);
6977 6976 }
6978 6977 if (ret != STMF_BUSY) {
6979 6978 stmf_abort(STMF_QUEUE_TASK_ABORT, task, ret, NULL);
6980 6979 return (ret);
6981 6980 }
6982 6981 }
6983 6982
6984 6983 if (target_reset) {
6985 6984 /* Tell target reset polling code that we are not done */
6986 6985 return (STMF_BUSY);
6987 6986 }
6988 6987
6989 6988 if (stmf_task_poll_lu(task, ITASK_DEFAULT_POLL_TIMEOUT)
6990 6989 != STMF_SUCCESS) {
6991 6990 stmf_abort(STMF_QUEUE_TASK_ABORT, task,
6992 6991 STMF_ALLOC_FAILURE, NULL);
6993 6992 return (STMF_SUCCESS);
6994 6993 }
6995 6994
6996 6995 return (STMF_SUCCESS);
6997 6996 }
6998 6997
6999 6998 void
7000 6999 stmf_target_reset_poll(struct scsi_task *task)
7001 7000 {
7002 7001 stmf_i_scsi_session_t *iss = (stmf_i_scsi_session_t *)
7003 7002 task->task_session->ss_stmf_private;
7004 7003 stmf_lun_map_t *lm;
7005 7004 stmf_lun_map_ent_t *lm_ent;
7006 7005 stmf_i_lu_t *ilu;
7007 7006 stmf_status_t ret;
7008 7007 int i;
7009 7008 int not_done = 0;
7010 7009
7011 7010 ASSERT(iss->iss_flags & ISS_RESET_ACTIVE);
7012 7011
7013 7012 rw_enter(iss->iss_lockp, RW_READER);
7014 7013 lm = iss->iss_sm;
7015 7014 for (i = 0; i < lm->lm_nentries; i++) {
7016 7015 if (lm->lm_plus[i] == NULL)
7017 7016 continue;
7018 7017 lm_ent = (stmf_lun_map_ent_t *)lm->lm_plus[i];
7019 7018 ilu = (stmf_i_lu_t *)lm_ent->ent_lu->lu_stmf_private;
7020 7019 if (ilu->ilu_flags & ILU_RESET_ACTIVE) {
7021 7020 rw_exit(iss->iss_lockp);
7022 7021 ret = stmf_lun_reset_poll(lm_ent->ent_lu, task, 1);
7023 7022 rw_enter(iss->iss_lockp, RW_READER);
7024 7023 if (ret == STMF_SUCCESS)
7025 7024 continue;
7026 7025 not_done = 1;
7027 7026 if (ret != STMF_BUSY) {
7028 7027 rw_exit(iss->iss_lockp);
7029 7028 stmf_abort(STMF_QUEUE_TASK_ABORT, task,
7030 7029 STMF_ABORTED, NULL);
7031 7030 return;
7032 7031 }
7033 7032 }
7034 7033 }
7035 7034 rw_exit(iss->iss_lockp);
7036 7035
7037 7036 if (not_done) {
7038 7037 if (stmf_task_poll_lu(task, ITASK_DEFAULT_POLL_TIMEOUT)
7039 7038 != STMF_SUCCESS) {
7040 7039 stmf_abort(STMF_QUEUE_TASK_ABORT, task,
7041 7040 STMF_ALLOC_FAILURE, NULL);
7042 7041 return;
7043 7042 }
7044 7043 return;
7045 7044 }
7046 7045
7047 7046 atomic_and_32(&iss->iss_flags, ~ISS_RESET_ACTIVE);
7048 7047
7049 7048 stmf_scsilib_send_status(task, STATUS_GOOD, 0);
7050 7049 }
7051 7050
7052 7051 stmf_status_t
7053 7052 stmf_lu_add_event(stmf_lu_t *lu, int eventid)
7054 7053 {
7055 7054 stmf_i_lu_t *ilu = (stmf_i_lu_t *)lu->lu_stmf_private;
7056 7055
7057 7056 if ((eventid < 0) || (eventid >= STMF_MAX_NUM_EVENTS)) {
7058 7057 return (STMF_INVALID_ARG);
7059 7058 }
7060 7059
7061 7060 STMF_EVENT_ADD(ilu->ilu_event_hdl, eventid);
7062 7061 return (STMF_SUCCESS);
7063 7062 }
7064 7063
7065 7064 stmf_status_t
7066 7065 stmf_lu_remove_event(stmf_lu_t *lu, int eventid)
7067 7066 {
7068 7067 stmf_i_lu_t *ilu = (stmf_i_lu_t *)lu->lu_stmf_private;
7069 7068
7070 7069 if (eventid == STMF_EVENT_ALL) {
7071 7070 STMF_EVENT_CLEAR_ALL(ilu->ilu_event_hdl);
7072 7071 return (STMF_SUCCESS);
7073 7072 }
7074 7073
7075 7074 if ((eventid < 0) || (eventid >= STMF_MAX_NUM_EVENTS)) {
7076 7075 return (STMF_INVALID_ARG);
7077 7076 }
7078 7077
7079 7078 STMF_EVENT_REMOVE(ilu->ilu_event_hdl, eventid);
7080 7079 return (STMF_SUCCESS);
7081 7080 }
7082 7081
7083 7082 stmf_status_t
7084 7083 stmf_lport_add_event(stmf_local_port_t *lport, int eventid)
7085 7084 {
7086 7085 stmf_i_local_port_t *ilport =
7087 7086 (stmf_i_local_port_t *)lport->lport_stmf_private;
7088 7087
7089 7088 if ((eventid < 0) || (eventid >= STMF_MAX_NUM_EVENTS)) {
7090 7089 return (STMF_INVALID_ARG);
7091 7090 }
7092 7091
7093 7092 STMF_EVENT_ADD(ilport->ilport_event_hdl, eventid);
7094 7093 return (STMF_SUCCESS);
7095 7094 }
7096 7095
7097 7096 stmf_status_t
7098 7097 stmf_lport_remove_event(stmf_local_port_t *lport, int eventid)
7099 7098 {
7100 7099 stmf_i_local_port_t *ilport =
7101 7100 (stmf_i_local_port_t *)lport->lport_stmf_private;
7102 7101
7103 7102 if (eventid == STMF_EVENT_ALL) {
7104 7103 STMF_EVENT_CLEAR_ALL(ilport->ilport_event_hdl);
7105 7104 return (STMF_SUCCESS);
7106 7105 }
7107 7106
7108 7107 if ((eventid < 0) || (eventid >= STMF_MAX_NUM_EVENTS)) {
7109 7108 return (STMF_INVALID_ARG);
7110 7109 }
7111 7110
7112 7111 STMF_EVENT_REMOVE(ilport->ilport_event_hdl, eventid);
7113 7112 return (STMF_SUCCESS);
7114 7113 }
7115 7114
7116 7115 void
7117 7116 stmf_generate_lu_event(stmf_i_lu_t *ilu, int eventid, void *arg, uint32_t flags)
7118 7117 {
7119 7118 if (STMF_EVENT_ENABLED(ilu->ilu_event_hdl, eventid) &&
7120 7119 (ilu->ilu_lu->lu_event_handler != NULL)) {
7121 7120 ilu->ilu_lu->lu_event_handler(ilu->ilu_lu, eventid, arg, flags);
7122 7121 }
7123 7122 }
7124 7123
7125 7124 void
7126 7125 stmf_generate_lport_event(stmf_i_local_port_t *ilport, int eventid, void *arg,
7127 7126 uint32_t flags)
7128 7127 {
7129 7128 if (STMF_EVENT_ENABLED(ilport->ilport_event_hdl, eventid) &&
7130 7129 (ilport->ilport_lport->lport_event_handler != NULL)) {
7131 7130 ilport->ilport_lport->lport_event_handler(
7132 7131 ilport->ilport_lport, eventid, arg, flags);
7133 7132 }
7134 7133 }
7135 7134
7136 7135 /*
7137 7136 * With the possibility of having multiple itl sessions pointing to the
7138 7137 * same itl_kstat_info, the ilu_kstat_lock mutex is used to synchronize
7139 7138 * the kstat update of the ilu_kstat_io, itl_kstat_taskq and itl_kstat_lu_xfer
7140 7139 * statistics.
7141 7140 */
7142 7141 void
7143 7142 stmf_itl_task_start(stmf_i_scsi_task_t *itask)
7144 7143 {
7145 7144 stmf_itl_data_t *itl = itask->itask_itl_datap;
7146 7145 scsi_task_t *task = itask->itask_task;
7147 7146 stmf_i_lu_t *ilu;
7148 7147
7149 7148 if (itl == NULL || task->task_lu == dlun0)
7150 7149 return;
7151 7150 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private;
7152 7151 itask->itask_start_timestamp = gethrtime();
7153 7152 if (ilu->ilu_kstat_io != NULL) {
7154 7153 mutex_enter(ilu->ilu_kstat_io->ks_lock);
7155 7154 stmf_update_kstat_lu_q(itask->itask_task, kstat_waitq_enter);
7156 7155 mutex_exit(ilu->ilu_kstat_io->ks_lock);
7157 7156 }
7158 7157
7159 7158 stmf_update_kstat_lport_q(itask->itask_task, kstat_waitq_enter);
7160 7159 }
7161 7160
7162 7161 void
7163 7162 stmf_itl_lu_new_task(stmf_i_scsi_task_t *itask)
7164 7163 {
7165 7164 stmf_itl_data_t *itl = itask->itask_itl_datap;
7166 7165 scsi_task_t *task = itask->itask_task;
7167 7166 stmf_i_lu_t *ilu;
7168 7167
7169 7168 if (itl == NULL || task->task_lu == dlun0)
7170 7169 return;
7171 7170 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private;
7172 7171 if (ilu->ilu_kstat_io != NULL) {
7173 7172 mutex_enter(ilu->ilu_kstat_io->ks_lock);
7174 7173 stmf_update_kstat_lu_q(itask->itask_task, kstat_waitq_to_runq);
7175 7174 mutex_exit(ilu->ilu_kstat_io->ks_lock);
7176 7175 }
7177 7176
7178 7177 stmf_update_kstat_lport_q(itask->itask_task, kstat_waitq_to_runq);
7179 7178 }
7180 7179
7181 7180 void
7182 7181 stmf_itl_task_done(stmf_i_scsi_task_t *itask)
7183 7182 {
7184 7183 stmf_itl_data_t *itl = itask->itask_itl_datap;
7185 7184 scsi_task_t *task = itask->itask_task;
7186 7185 stmf_i_lu_t *ilu;
7187 7186
7188 7187 itask->itask_done_timestamp = gethrtime();
7189 7188
7190 7189 if (itl == NULL || task->task_lu == dlun0)
7191 7190 return;
7192 7191 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private;
7193 7192
7194 7193 if (ilu->ilu_kstat_io == NULL)
7195 7194 return;
7196 7195
7197 7196 mutex_enter(ilu->ilu_kstat_io->ks_lock);
7198 7197
7199 7198 if (itask->itask_flags & ITASK_KSTAT_IN_RUNQ) {
7200 7199 stmf_update_kstat_lu_q(task, kstat_runq_exit);
7201 7200 mutex_exit(ilu->ilu_kstat_io->ks_lock);
7202 7201 stmf_update_kstat_lport_q(task, kstat_runq_exit);
7203 7202 } else {
7204 7203 stmf_update_kstat_lu_q(task, kstat_waitq_exit);
7205 7204 mutex_exit(ilu->ilu_kstat_io->ks_lock);
7206 7205 stmf_update_kstat_lport_q(task, kstat_waitq_exit);
7207 7206 }
7208 7207 }
7209 7208
7210 7209 static void
7211 7210 stmf_lport_xfer_start(stmf_i_scsi_task_t *itask, stmf_data_buf_t *dbuf)
7212 7211 {
7213 7212 stmf_itl_data_t *itl = itask->itask_itl_datap;
7214 7213
7215 7214 if (itl == NULL)
7216 7215 return;
7217 7216
7218 7217 DTRACE_PROBE2(scsi__xfer__start, scsi_task_t *, itask->itask_task,
7219 7218 stmf_data_buf_t *, dbuf);
7220 7219
7221 7220 dbuf->db_xfer_start_timestamp = gethrtime();
7222 7221 }
7223 7222
7224 7223 static void
7225 7224 stmf_lport_xfer_done(stmf_i_scsi_task_t *itask, stmf_data_buf_t *dbuf)
7226 7225 {
7227 7226 stmf_itl_data_t *itl = itask->itask_itl_datap;
7228 7227 hrtime_t elapsed_time;
7229 7228 uint64_t xfer_size;
7230 7229
7231 7230 if (itl == NULL)
7232 7231 return;
7233 7232
7234 7233 xfer_size = (dbuf->db_xfer_status == STMF_SUCCESS) ?
7235 7234 dbuf->db_data_size : 0;
7236 7235
7237 7236 elapsed_time = gethrtime() - dbuf->db_xfer_start_timestamp;
7238 7237 if (dbuf->db_flags & DB_DIRECTION_TO_RPORT) {
7239 7238 atomic_add_64((uint64_t *)&itask->itask_lport_read_time,
7240 7239 elapsed_time);
7241 7240 atomic_add_64((uint64_t *)&itask->itask_read_xfer,
7242 7241 xfer_size);
7243 7242 } else {
7244 7243 atomic_add_64((uint64_t *)&itask->itask_lport_write_time,
7245 7244 elapsed_time);
7246 7245 atomic_add_64((uint64_t *)&itask->itask_write_xfer,
7247 7246 xfer_size);
7248 7247 }
7249 7248
7250 7249 DTRACE_PROBE3(scsi__xfer__end, scsi_task_t *, itask->itask_task,
7251 7250 stmf_data_buf_t *, dbuf, hrtime_t, elapsed_time);
7252 7251
7253 7252 dbuf->db_xfer_start_timestamp = 0;
7254 7253 }
7255 7254
7256 7255 void
7257 7256 stmf_svc_init()
7258 7257 {
7259 7258 if (stmf_state.stmf_svc_flags & STMF_SVC_STARTED)
7260 7259 return;
7261 7260 stmf_state.stmf_svc_tailp = &stmf_state.stmf_svc_active;
7262 7261 stmf_state.stmf_svc_taskq = ddi_taskq_create(0, "STMF_SVC_TASKQ", 1,
7263 7262 TASKQ_DEFAULTPRI, 0);
7264 7263 (void) ddi_taskq_dispatch(stmf_state.stmf_svc_taskq,
7265 7264 stmf_svc, 0, DDI_SLEEP);
7266 7265 }
7267 7266
7268 7267 stmf_status_t
7269 7268 stmf_svc_fini()
7270 7269 {
7271 7270 uint32_t i;
7272 7271
7273 7272 mutex_enter(&stmf_state.stmf_lock);
7274 7273 if (stmf_state.stmf_svc_flags & STMF_SVC_STARTED) {
7275 7274 stmf_state.stmf_svc_flags |= STMF_SVC_TERMINATE;
7276 7275 cv_signal(&stmf_state.stmf_cv);
7277 7276 }
7278 7277 mutex_exit(&stmf_state.stmf_lock);
7279 7278
7280 7279 /* Wait for 5 seconds */
7281 7280 for (i = 0; i < 500; i++) {
7282 7281 if (stmf_state.stmf_svc_flags & STMF_SVC_STARTED)
7283 7282 delay(drv_usectohz(10000));
7284 7283 else
7285 7284 break;
7286 7285 }
7287 7286 if (i == 500)
7288 7287 return (STMF_BUSY);
7289 7288
7290 7289 ddi_taskq_destroy(stmf_state.stmf_svc_taskq);
7291 7290
7292 7291 return (STMF_SUCCESS);
7293 7292 }
7294 7293
7295 7294 struct stmf_svc_clocks {
7296 7295 clock_t drain_start, drain_next;
7297 7296 clock_t timing_start, timing_next;
7298 7297 clock_t worker_delay;
7299 7298 };
7300 7299
7301 7300 /* ARGSUSED */
7302 7301 void
7303 7302 stmf_svc(void *arg)
7304 7303 {
7305 7304 stmf_svc_req_t *req;
7306 7305 stmf_lu_t *lu;
7307 7306 stmf_i_lu_t *ilu;
7308 7307 stmf_local_port_t *lport;
7309 7308 struct stmf_svc_clocks clks = { 0 };
7310 7309
7311 7310 mutex_enter(&stmf_state.stmf_lock);
7312 7311 stmf_state.stmf_svc_flags |= STMF_SVC_STARTED | STMF_SVC_ACTIVE;
7313 7312
7314 7313 while (!(stmf_state.stmf_svc_flags & STMF_SVC_TERMINATE)) {
7315 7314 if (stmf_state.stmf_svc_active == NULL) {
7316 7315 stmf_svc_timeout(&clks);
7317 7316 continue;
7318 7317 }
7319 7318
7320 7319 /*
7321 7320 * Pop the front request from the active list. After this,
7322 7321 * the request will no longer be referenced by global state,
7323 7322 * so it should be safe to access it without holding the
7324 7323 * stmf state lock.
7325 7324 */
7326 7325 req = stmf_state.stmf_svc_active;
7327 7326 stmf_state.stmf_svc_active = req->svc_next;
7328 7327
7329 7328 if (stmf_state.stmf_svc_active == NULL)
7330 7329 stmf_state.stmf_svc_tailp = &stmf_state.stmf_svc_active;
7331 7330
7332 7331 switch (req->svc_cmd) {
7333 7332 case STMF_CMD_LPORT_ONLINE:
7334 7333 /* Fallthrough */
7335 7334 case STMF_CMD_LPORT_OFFLINE:
7336 7335 mutex_exit(&stmf_state.stmf_lock);
7337 7336 lport = (stmf_local_port_t *)req->svc_obj;
7338 7337 lport->lport_ctl(lport, req->svc_cmd, &req->svc_info);
7339 7338 break;
7340 7339 case STMF_CMD_LU_ONLINE:
7341 7340 mutex_exit(&stmf_state.stmf_lock);
7342 7341 lu = (stmf_lu_t *)req->svc_obj;
7343 7342 lu->lu_ctl(lu, req->svc_cmd, &req->svc_info);
7344 7343 break;
7345 7344 case STMF_CMD_LU_OFFLINE:
7346 7345 /* Remove all mappings of this LU */
7347 7346 stmf_session_lu_unmapall((stmf_lu_t *)req->svc_obj);
7348 7347 /* Kill all the pending I/Os for this LU */
7349 7348 mutex_exit(&stmf_state.stmf_lock);
7350 7349 stmf_task_lu_killall((stmf_lu_t *)req->svc_obj, NULL,
7351 7350 STMF_ABORTED);
7352 7351 lu = (stmf_lu_t *)req->svc_obj;
7353 7352 ilu = (stmf_i_lu_t *)lu->lu_stmf_private;
7354 7353 stmf_wait_ilu_tasks_finish(ilu);
7355 7354 lu->lu_ctl(lu, req->svc_cmd, &req->svc_info);
7356 7355 break;
7357 7356 default:
7358 7357 cmn_err(CE_PANIC, "stmf_svc: unknown cmd %d",
7359 7358 req->svc_cmd);
7360 7359 }
7361 7360
7362 7361 kmem_free(req, req->svc_req_alloc_size);
7363 7362 mutex_enter(&stmf_state.stmf_lock);
7364 7363 }
7365 7364
7366 7365 stmf_state.stmf_svc_flags &= ~(STMF_SVC_STARTED | STMF_SVC_ACTIVE);
7367 7366 mutex_exit(&stmf_state.stmf_lock);
7368 7367 }
7369 7368
7370 7369 static void
7371 7370 stmf_svc_timeout(struct stmf_svc_clocks *clks)
7372 7371 {
7373 7372 clock_t td;
7374 7373 stmf_i_local_port_t *ilport, *next_ilport;
7375 7374 stmf_i_scsi_session_t *iss;
7376 7375
7377 7376 ASSERT(mutex_owned(&stmf_state.stmf_lock));
7378 7377
7379 7378 td = drv_usectohz(20000);
7380 7379
7381 7380 /* Do timeouts */
7382 7381 if (stmf_state.stmf_nlus &&
7383 7382 ((!clks->timing_next) || (ddi_get_lbolt() >= clks->timing_next))) {
7384 7383 if (!stmf_state.stmf_svc_ilu_timing) {
7385 7384 /* we are starting a new round */
7386 7385 stmf_state.stmf_svc_ilu_timing =
7387 7386 stmf_state.stmf_ilulist;
7388 7387 clks->timing_start = ddi_get_lbolt();
7389 7388 }
7390 7389
7391 7390 stmf_check_ilu_timing();
7392 7391 if (!stmf_state.stmf_svc_ilu_timing) {
7393 7392 /* we finished a complete round */
7394 7393 clks->timing_next =
7395 7394 clks->timing_start + drv_usectohz(5*1000*1000);
7396 7395 } else {
7397 7396 /* we still have some ilu items to check */
7398 7397 clks->timing_next =
7399 7398 ddi_get_lbolt() + drv_usectohz(1*1000*1000);
7400 7399 }
7401 7400
7402 7401 if (stmf_state.stmf_svc_active)
7403 7402 return;
7404 7403 }
7405 7404
7406 7405 /* Check if there are free tasks to clear */
7407 7406 if (stmf_state.stmf_nlus &&
7408 7407 ((!clks->drain_next) || (ddi_get_lbolt() >= clks->drain_next))) {
7409 7408 if (!stmf_state.stmf_svc_ilu_draining) {
7410 7409 /* we are starting a new round */
7411 7410 stmf_state.stmf_svc_ilu_draining =
7412 7411 stmf_state.stmf_ilulist;
7413 7412 clks->drain_start = ddi_get_lbolt();
7414 7413 }
7415 7414
7416 7415 stmf_check_freetask();
7417 7416 if (!stmf_state.stmf_svc_ilu_draining) {
7418 7417 /* we finished a complete round */
7419 7418 clks->drain_next =
7420 7419 clks->drain_start + drv_usectohz(10*1000*1000);
7421 7420 } else {
7422 7421 /* we still have some ilu items to check */
7423 7422 clks->drain_next =
7424 7423 ddi_get_lbolt() + drv_usectohz(1*1000*1000);
7425 7424 }
7426 7425
7427 7426 if (stmf_state.stmf_svc_active)
7428 7427 return;
7429 7428 }
7430 7429
7431 7430 /* Check if we need to run worker_mgmt */
7432 7431 if (ddi_get_lbolt() > clks->worker_delay) {
7433 7432 stmf_worker_mgmt();
7434 7433 clks->worker_delay = ddi_get_lbolt() +
7435 7434 stmf_worker_mgmt_delay;
7436 7435 }
7437 7436
7438 7437 /* Check if any active session got its 1st LUN */
7439 7438 if (stmf_state.stmf_process_initial_luns) {
7440 7439 int stmf_level = 0;
7441 7440 int port_level;
7442 7441
7443 7442 for (ilport = stmf_state.stmf_ilportlist; ilport;
7444 7443 ilport = next_ilport) {
7445 7444 int ilport_lock_held;
7446 7445 next_ilport = ilport->ilport_next;
7447 7446
7448 7447 if ((ilport->ilport_flags &
7449 7448 ILPORT_SS_GOT_INITIAL_LUNS) == 0)
7450 7449 continue;
7451 7450
7452 7451 port_level = 0;
7453 7452 rw_enter(&ilport->ilport_lock, RW_READER);
7454 7453 ilport_lock_held = 1;
7455 7454
7456 7455 for (iss = ilport->ilport_ss_list; iss;
7457 7456 iss = iss->iss_next) {
7458 7457 if ((iss->iss_flags &
7459 7458 ISS_GOT_INITIAL_LUNS) == 0)
7460 7459 continue;
7461 7460
7462 7461 port_level++;
7463 7462 stmf_level++;
7464 7463 atomic_and_32(&iss->iss_flags,
7465 7464 ~ISS_GOT_INITIAL_LUNS);
7466 7465 atomic_or_32(&iss->iss_flags,
7467 7466 ISS_EVENT_ACTIVE);
7468 7467 rw_exit(&ilport->ilport_lock);
7469 7468 ilport_lock_held = 0;
7470 7469 mutex_exit(&stmf_state.stmf_lock);
7471 7470 stmf_generate_lport_event(ilport,
7472 7471 LPORT_EVENT_INITIAL_LUN_MAPPED,
7473 7472 iss->iss_ss, 0);
7474 7473 atomic_and_32(&iss->iss_flags,
7475 7474 ~ISS_EVENT_ACTIVE);
7476 7475 mutex_enter(&stmf_state.stmf_lock);
7477 7476 /*
7478 7477 * scan all the ilports again as the
7479 7478 * ilport list might have changed.
7480 7479 */
7481 7480 next_ilport = stmf_state.stmf_ilportlist;
7482 7481 break;
7483 7482 }
7484 7483
7485 7484 if (port_level == 0)
7486 7485 atomic_and_32(&ilport->ilport_flags,
7487 7486 ~ILPORT_SS_GOT_INITIAL_LUNS);
7488 7487 /* drop the lock if we are holding it. */
7489 7488 if (ilport_lock_held == 1)
7490 7489 rw_exit(&ilport->ilport_lock);
7491 7490
7492 7491 /* Max 4 session at a time */
7493 7492 if (stmf_level >= 4)
7494 7493 break;
7495 7494 }
7496 7495
7497 7496 if (stmf_level == 0)
7498 7497 stmf_state.stmf_process_initial_luns = 0;
7499 7498 }
7500 7499
7501 7500 stmf_state.stmf_svc_flags &= ~STMF_SVC_ACTIVE;
7502 7501 (void) cv_reltimedwait(&stmf_state.stmf_cv,
7503 7502 &stmf_state.stmf_lock, td, TR_CLOCK_TICK);
7504 7503 stmf_state.stmf_svc_flags |= STMF_SVC_ACTIVE;
7505 7504 }
7506 7505
7507 7506 /*
7508 7507 * Waits for ongoing I/O tasks to finish on an LU in preparation for
7509 7508 * the LU's offlining. The LU should already be in an Offlining state
7510 7509 * (otherwise I/O to the LU might never end). There is an additional
7511 7510 * enforcement of this via a deadman timer check.
7512 7511 */
7513 7512 static void
7514 7513 stmf_wait_ilu_tasks_finish(stmf_i_lu_t *ilu)
7515 7514 {
7516 7515 clock_t start, now, deadline;
7517 7516
7518 7517 start = now = ddi_get_lbolt();
7519 7518 deadline = start + drv_usectohz(stmf_io_deadman * 1000000llu);
7520 7519 mutex_enter(&ilu->ilu_task_lock);
7521 7520 while (ilu->ilu_ntasks != ilu->ilu_ntasks_free) {
7522 7521 (void) cv_timedwait(&ilu->ilu_offline_pending_cv,
7523 7522 &ilu->ilu_task_lock, deadline);
7524 7523 now = ddi_get_lbolt();
7525 7524 if (now > deadline) {
7526 7525 if (stmf_io_deadman_enabled) {
7527 7526 cmn_err(CE_PANIC, "stmf_svc: I/O deadman hit "
7528 7527 "on STMF_CMD_LU_OFFLINE after %d seconds",
7529 7528 stmf_io_deadman);
7530 7529 } else {
7531 7530 /* keep on spinning */
7532 7531 deadline = now + drv_usectohz(stmf_io_deadman *
7533 7532 1000000llu);
7534 7533 }
7535 7534 }
7536 7535 }
7537 7536 mutex_exit(&ilu->ilu_task_lock);
7538 7537 DTRACE_PROBE1(deadman__timeout__wait, clock_t, now - start);
7539 7538 }
7540 7539
7541 7540 void
7542 7541 stmf_svc_queue(int cmd, void *obj, stmf_state_change_info_t *info)
7543 7542 {
7544 7543 stmf_svc_req_t *req;
7545 7544 int s;
7546 7545
7547 7546 ASSERT(!mutex_owned(&stmf_state.stmf_lock));
7548 7547 s = sizeof (stmf_svc_req_t);
7549 7548 if (info->st_additional_info) {
7550 7549 s += strlen(info->st_additional_info) + 1;
7551 7550 }
7552 7551 req = kmem_zalloc(s, KM_SLEEP);
7553 7552
7554 7553 req->svc_cmd = cmd;
7555 7554 req->svc_obj = obj;
7556 7555 req->svc_info.st_rflags = info->st_rflags;
7557 7556 if (info->st_additional_info) {
7558 7557 req->svc_info.st_additional_info = (char *)(GET_BYTE_OFFSET(req,
7559 7558 sizeof (stmf_svc_req_t)));
7560 7559 (void) strcpy(req->svc_info.st_additional_info,
7561 7560 info->st_additional_info);
7562 7561 }
7563 7562 req->svc_req_alloc_size = s;
7564 7563 req->svc_next = NULL;
7565 7564
7566 7565 mutex_enter(&stmf_state.stmf_lock);
7567 7566 *stmf_state.stmf_svc_tailp = req;
7568 7567 stmf_state.stmf_svc_tailp = &req->svc_next;
7569 7568 if ((stmf_state.stmf_svc_flags & STMF_SVC_ACTIVE) == 0) {
7570 7569 cv_signal(&stmf_state.stmf_cv);
7571 7570 }
7572 7571 mutex_exit(&stmf_state.stmf_lock);
7573 7572 }
7574 7573
7575 7574 static void
7576 7575 stmf_svc_kill_obj_requests(void *obj)
7577 7576 {
7578 7577 stmf_svc_req_t *prev_req = NULL;
7579 7578 stmf_svc_req_t *next_req;
7580 7579 stmf_svc_req_t *req;
7581 7580
7582 7581 ASSERT(mutex_owned(&stmf_state.stmf_lock));
7583 7582
7584 7583 for (req = stmf_state.stmf_svc_active; req != NULL; req = next_req) {
7585 7584 next_req = req->svc_next;
7586 7585
7587 7586 if (req->svc_obj == obj) {
7588 7587 if (prev_req != NULL)
7589 7588 prev_req->svc_next = next_req;
7590 7589 else
7591 7590 stmf_state.stmf_svc_active = next_req;
7592 7591
7593 7592 if (next_req == NULL)
7594 7593 stmf_state.stmf_svc_tailp = (prev_req != NULL) ?
7595 7594 &prev_req->svc_next :
7596 7595 &stmf_state.stmf_svc_active;
7597 7596
7598 7597 kmem_free(req, req->svc_req_alloc_size);
7599 7598 } else {
7600 7599 prev_req = req;
7601 7600 }
7602 7601 }
7603 7602 }
7604 7603
7605 7604 void
7606 7605 stmf_trace(caddr_t ident, const char *fmt, ...)
7607 7606 {
7608 7607 va_list args;
7609 7608 char tbuf[160];
7610 7609 int len;
7611 7610
7612 7611 if (!stmf_trace_on)
7613 7612 return;
7614 7613 len = snprintf(tbuf, 158, "%s:%07lu: ", ident ? ident : "",
7615 7614 ddi_get_lbolt());
7616 7615 va_start(args, fmt);
7617 7616 len += vsnprintf(tbuf + len, 158 - len, fmt, args);
7618 7617 va_end(args);
7619 7618
7620 7619 if (len > 158) {
7621 7620 len = 158;
7622 7621 }
7623 7622 tbuf[len++] = '\n';
7624 7623 tbuf[len] = 0;
7625 7624
7626 7625 mutex_enter(&trace_buf_lock);
7627 7626 bcopy(tbuf, &stmf_trace_buf[trace_buf_curndx], len+1);
7628 7627 trace_buf_curndx += len;
7629 7628 if (trace_buf_curndx > (trace_buf_size - 320))
7630 7629 trace_buf_curndx = 0;
7631 7630 mutex_exit(&trace_buf_lock);
7632 7631 }
7633 7632
7634 7633 void
7635 7634 stmf_trace_clear()
7636 7635 {
7637 7636 if (!stmf_trace_on)
7638 7637 return;
7639 7638 mutex_enter(&trace_buf_lock);
7640 7639 trace_buf_curndx = 0;
7641 7640 if (trace_buf_size > 0)
7642 7641 stmf_trace_buf[0] = 0;
7643 7642 mutex_exit(&trace_buf_lock);
7644 7643 }
7645 7644
7646 7645 static void
7647 7646 stmf_abort_task_offline(scsi_task_t *task, int offline_lu, char *info)
7648 7647 {
7649 7648 stmf_state_change_info_t change_info;
7650 7649 void *ctl_private;
7651 7650 uint32_t ctl_cmd;
7652 7651 int msg = 0;
7653 7652
7654 7653 stmf_trace("FROM STMF", "abort_task_offline called for %s: %s",
7655 7654 offline_lu ? "LU" : "LPORT", info ? info : "no additional info");
7656 7655 change_info.st_additional_info = info;
7657 7656 if (offline_lu) {
7658 7657 change_info.st_rflags = STMF_RFLAG_RESET |
7659 7658 STMF_RFLAG_LU_ABORT;
7660 7659 ctl_private = task->task_lu;
7661 7660 if (((stmf_i_lu_t *)
7662 7661 task->task_lu->lu_stmf_private)->ilu_state ==
7663 7662 STMF_STATE_ONLINE) {
7664 7663 msg = 1;
7665 7664 }
7666 7665 ctl_cmd = STMF_CMD_LU_OFFLINE;
7667 7666 } else {
7668 7667 change_info.st_rflags = STMF_RFLAG_RESET |
7669 7668 STMF_RFLAG_LPORT_ABORT;
7670 7669 ctl_private = task->task_lport;
7671 7670 if (((stmf_i_local_port_t *)
7672 7671 task->task_lport->lport_stmf_private)->ilport_state ==
7673 7672 STMF_STATE_ONLINE) {
7674 7673 msg = 1;
7675 7674 }
7676 7675 ctl_cmd = STMF_CMD_LPORT_OFFLINE;
7677 7676 }
7678 7677
7679 7678 if (msg) {
7680 7679 stmf_trace(0, "Calling stmf_ctl to offline %s : %s",
7681 7680 offline_lu ? "LU" : "LPORT", info ? info :
7682 7681 "<no additional info>");
7683 7682 }
7684 7683 (void) stmf_ctl(ctl_cmd, ctl_private, &change_info);
7685 7684 }
7686 7685
7687 7686 static char
7688 7687 stmf_ctoi(char c)
7689 7688 {
7690 7689 if ((c >= '0') && (c <= '9'))
7691 7690 c -= '0';
7692 7691 else if ((c >= 'A') && (c <= 'F'))
7693 7692 c = c - 'A' + 10;
7694 7693 else if ((c >= 'a') && (c <= 'f'))
7695 7694 c = c - 'a' + 10;
7696 7695 else
7697 7696 c = -1;
7698 7697 return (c);
7699 7698 }
7700 7699
7701 7700 /* Convert from Hex value in ASCII format to the equivalent bytes */
7702 7701 static boolean_t
7703 7702 stmf_base16_str_to_binary(char *c, int dplen, uint8_t *dp)
7704 7703 {
7705 7704 int ii;
7706 7705
7707 7706 for (ii = 0; ii < dplen; ii++) {
7708 7707 char nibble1, nibble2;
7709 7708 char enc_char = *c++;
7710 7709 nibble1 = stmf_ctoi(enc_char);
7711 7710
7712 7711 enc_char = *c++;
7713 7712 nibble2 = stmf_ctoi(enc_char);
7714 7713 if (nibble1 == -1 || nibble2 == -1)
7715 7714 return (B_FALSE);
7716 7715
7717 7716 dp[ii] = (nibble1 << 4) | nibble2;
7718 7717 }
7719 7718 return (B_TRUE);
7720 7719 }
7721 7720
7722 7721 boolean_t
7723 7722 stmf_scsilib_tptid_validate(scsi_transport_id_t *tptid, uint32_t total_sz,
7724 7723 uint16_t *tptid_sz)
7725 7724 {
7726 7725 uint16_t tpd_len = SCSI_TPTID_SIZE;
7727 7726
7728 7727 if (tptid_sz)
7729 7728 *tptid_sz = 0;
7730 7729 if (total_sz < sizeof (scsi_transport_id_t))
7731 7730 return (B_FALSE);
7732 7731
7733 7732 switch (tptid->protocol_id) {
7734 7733
7735 7734 case PROTOCOL_FIBRE_CHANNEL:
7736 7735 /* FC Transport ID validation checks. SPC3 rev23, Table 284 */
7737 7736 if (total_sz < tpd_len || tptid->format_code != 0)
7738 7737 return (B_FALSE);
7739 7738 break;
7740 7739
7741 7740 case PROTOCOL_iSCSI:
7742 7741 {
7743 7742 iscsi_transport_id_t *iscsiid;
7744 7743 uint16_t adn_len, name_len;
7745 7744
7746 7745 /* Check for valid format code, SPC3 rev 23 Table 288 */
7747 7746 if ((total_sz < tpd_len) ||
7748 7747 (tptid->format_code != 0 && tptid->format_code != 1))
7749 7748 return (B_FALSE);
7750 7749
7751 7750 iscsiid = (iscsi_transport_id_t *)tptid;
7752 7751 adn_len = READ_SCSI16(iscsiid->add_len, uint16_t);
7753 7752 tpd_len = sizeof (iscsi_transport_id_t) + adn_len - 1;
7754 7753
7755 7754 /*
7756 7755 * iSCSI Transport ID validation checks.
7757 7756 * As per SPC3 rev 23 Section 7.5.4.6 and Table 289 & Table 290
7758 7757 */
7759 7758 if (adn_len < 20 || (adn_len % 4 != 0))
7760 7759 return (B_FALSE);
7761 7760
7762 7761 name_len = strnlen(iscsiid->iscsi_name, adn_len);
7763 7762 if (name_len == 0 || name_len >= adn_len)
7764 7763 return (B_FALSE);
7765 7764
7766 7765 /* If the format_code is 1 check for ISID seperator */
7767 7766 if ((tptid->format_code == 1) && (strstr(iscsiid->iscsi_name,
7768 7767 SCSI_TPTID_ISCSI_ISID_SEPERATOR) == NULL))
7769 7768 return (B_FALSE);
7770 7769
7771 7770 }
7772 7771 break;
7773 7772
7774 7773 case PROTOCOL_SRP:
7775 7774 /* SRP Transport ID validation checks. SPC3 rev23, Table 287 */
7776 7775 if (total_sz < tpd_len || tptid->format_code != 0)
7777 7776 return (B_FALSE);
7778 7777 break;
7779 7778
7780 7779 case PROTOCOL_PARALLEL_SCSI:
7781 7780 case PROTOCOL_SSA:
7782 7781 case PROTOCOL_IEEE_1394:
7783 7782 case PROTOCOL_SAS:
7784 7783 case PROTOCOL_ADT:
7785 7784 case PROTOCOL_ATAPI:
7786 7785 default:
7787 7786 {
7788 7787 stmf_dflt_scsi_tptid_t *dflttpd;
7789 7788
7790 7789 tpd_len = sizeof (stmf_dflt_scsi_tptid_t);
7791 7790 if (total_sz < tpd_len)
7792 7791 return (B_FALSE);
7793 7792 dflttpd = (stmf_dflt_scsi_tptid_t *)tptid;
7794 7793 tpd_len = tpd_len + SCSI_READ16(&dflttpd->ident_len) - 1;
7795 7794 if (total_sz < tpd_len)
7796 7795 return (B_FALSE);
7797 7796 }
7798 7797 break;
7799 7798 }
7800 7799 if (tptid_sz)
7801 7800 *tptid_sz = tpd_len;
7802 7801 return (B_TRUE);
7803 7802 }
7804 7803
7805 7804 boolean_t
7806 7805 stmf_scsilib_tptid_compare(scsi_transport_id_t *tpd1,
7807 7806 scsi_transport_id_t *tpd2)
7808 7807 {
7809 7808 if ((tpd1->protocol_id != tpd2->protocol_id) ||
7810 7809 (tpd1->format_code != tpd2->format_code))
7811 7810 return (B_FALSE);
7812 7811
7813 7812 switch (tpd1->protocol_id) {
7814 7813
7815 7814 case PROTOCOL_iSCSI:
7816 7815 {
7817 7816 iscsi_transport_id_t *iscsitpd1, *iscsitpd2;
7818 7817 uint16_t len;
7819 7818
7820 7819 iscsitpd1 = (iscsi_transport_id_t *)tpd1;
7821 7820 iscsitpd2 = (iscsi_transport_id_t *)tpd2;
7822 7821 len = SCSI_READ16(&iscsitpd1->add_len);
7823 7822 if ((memcmp(iscsitpd1->add_len, iscsitpd2->add_len, 2) != 0) ||
7824 7823 (memcmp(iscsitpd1->iscsi_name, iscsitpd2->iscsi_name, len)
7825 7824 != 0))
7826 7825 return (B_FALSE);
7827 7826 }
7828 7827 break;
7829 7828
7830 7829 case PROTOCOL_SRP:
7831 7830 {
7832 7831 scsi_srp_transport_id_t *srptpd1, *srptpd2;
7833 7832
7834 7833 srptpd1 = (scsi_srp_transport_id_t *)tpd1;
7835 7834 srptpd2 = (scsi_srp_transport_id_t *)tpd2;
7836 7835 if (memcmp(srptpd1->srp_name, srptpd2->srp_name,
7837 7836 sizeof (srptpd1->srp_name)) != 0)
7838 7837 return (B_FALSE);
7839 7838 }
7840 7839 break;
7841 7840
7842 7841 case PROTOCOL_FIBRE_CHANNEL:
7843 7842 {
7844 7843 scsi_fc_transport_id_t *fctpd1, *fctpd2;
7845 7844
7846 7845 fctpd1 = (scsi_fc_transport_id_t *)tpd1;
7847 7846 fctpd2 = (scsi_fc_transport_id_t *)tpd2;
7848 7847 if (memcmp(fctpd1->port_name, fctpd2->port_name,
7849 7848 sizeof (fctpd1->port_name)) != 0)
7850 7849 return (B_FALSE);
7851 7850 }
7852 7851 break;
7853 7852
7854 7853 case PROTOCOL_PARALLEL_SCSI:
7855 7854 case PROTOCOL_SSA:
7856 7855 case PROTOCOL_IEEE_1394:
7857 7856 case PROTOCOL_SAS:
7858 7857 case PROTOCOL_ADT:
7859 7858 case PROTOCOL_ATAPI:
7860 7859 default:
7861 7860 {
7862 7861 stmf_dflt_scsi_tptid_t *dflt1, *dflt2;
7863 7862 uint16_t len;
7864 7863
7865 7864 dflt1 = (stmf_dflt_scsi_tptid_t *)tpd1;
7866 7865 dflt2 = (stmf_dflt_scsi_tptid_t *)tpd2;
7867 7866 len = SCSI_READ16(&dflt1->ident_len);
7868 7867 if ((memcmp(dflt1->ident_len, dflt2->ident_len, 2) != 0) ||
7869 7868 (memcmp(dflt1->ident, dflt2->ident, len) != 0))
7870 7869 return (B_FALSE);
7871 7870 }
7872 7871 break;
7873 7872 }
7874 7873 return (B_TRUE);
7875 7874 }
7876 7875
7877 7876 /*
7878 7877 * Changes devid_desc to corresponding TransportID format
7879 7878 * Returns :- pointer to stmf_remote_port_t
7880 7879 * Note :- Allocates continous memory for stmf_remote_port_t and TransportID,
7881 7880 * This memory need to be freed when this remote_port is no longer
7882 7881 * used.
7883 7882 */
7884 7883 stmf_remote_port_t *
7885 7884 stmf_scsilib_devid_to_remote_port(scsi_devid_desc_t *devid)
7886 7885 {
7887 7886 struct scsi_fc_transport_id *fc_tpd;
7888 7887 struct iscsi_transport_id *iscsi_tpd;
7889 7888 struct scsi_srp_transport_id *srp_tpd;
7890 7889 struct stmf_dflt_scsi_tptid *dflt_tpd;
7891 7890 uint16_t ident_len, sz = 0;
7892 7891 stmf_remote_port_t *rpt = NULL;
7893 7892
7894 7893 ident_len = devid->ident_length;
7895 7894 ASSERT(ident_len);
7896 7895 switch (devid->protocol_id) {
7897 7896 case PROTOCOL_FIBRE_CHANNEL:
7898 7897 sz = sizeof (scsi_fc_transport_id_t);
7899 7898 rpt = stmf_remote_port_alloc(sz);
7900 7899 rpt->rport_tptid->format_code = 0;
7901 7900 rpt->rport_tptid->protocol_id = devid->protocol_id;
7902 7901 fc_tpd = (scsi_fc_transport_id_t *)rpt->rport_tptid;
7903 7902 /*
7904 7903 * convert from "wwn.xxxxxxxxxxxxxxxx" to 8-byte binary
7905 7904 * skip first 4 byte for "wwn."
7906 7905 */
7907 7906 ASSERT(strncmp("wwn.", (char *)devid->ident, 4) == 0);
7908 7907 if ((ident_len < SCSI_TPTID_FC_PORT_NAME_SIZE * 2 + 4) ||
7909 7908 !stmf_base16_str_to_binary((char *)devid->ident + 4,
7910 7909 SCSI_TPTID_FC_PORT_NAME_SIZE, fc_tpd->port_name))
7911 7910 goto devid_to_remote_port_fail;
7912 7911 break;
7913 7912
7914 7913 case PROTOCOL_iSCSI:
7915 7914 sz = ALIGNED_TO_8BYTE_BOUNDARY(sizeof (iscsi_transport_id_t) +
7916 7915 ident_len - 1);
7917 7916 rpt = stmf_remote_port_alloc(sz);
7918 7917 rpt->rport_tptid->format_code = 0;
7919 7918 rpt->rport_tptid->protocol_id = devid->protocol_id;
7920 7919 iscsi_tpd = (iscsi_transport_id_t *)rpt->rport_tptid;
7921 7920 SCSI_WRITE16(iscsi_tpd->add_len, ident_len);
7922 7921 (void) memcpy(iscsi_tpd->iscsi_name, devid->ident, ident_len);
7923 7922 break;
7924 7923
7925 7924 case PROTOCOL_SRP:
7926 7925 sz = sizeof (scsi_srp_transport_id_t);
7927 7926 rpt = stmf_remote_port_alloc(sz);
7928 7927 rpt->rport_tptid->format_code = 0;
7929 7928 rpt->rport_tptid->protocol_id = devid->protocol_id;
7930 7929 srp_tpd = (scsi_srp_transport_id_t *)rpt->rport_tptid;
7931 7930 /*
7932 7931 * convert from "eui.xxxxxxxxxxxxxxx" to 8-byte binary
7933 7932 * skip first 4 byte for "eui."
7934 7933 * Assume 8-byte initiator-extension part of srp_name is NOT
7935 7934 * stored in devid and hence will be set as zero
7936 7935 */
7937 7936 ASSERT(strncmp("eui.", (char *)devid->ident, 4) == 0);
7938 7937 if ((ident_len < (SCSI_TPTID_SRP_PORT_NAME_LEN - 8) * 2 + 4) ||
7939 7938 !stmf_base16_str_to_binary((char *)devid->ident+4,
7940 7939 SCSI_TPTID_SRP_PORT_NAME_LEN, srp_tpd->srp_name))
7941 7940 goto devid_to_remote_port_fail;
7942 7941 break;
7943 7942
7944 7943 case PROTOCOL_PARALLEL_SCSI:
7945 7944 case PROTOCOL_SSA:
7946 7945 case PROTOCOL_IEEE_1394:
7947 7946 case PROTOCOL_SAS:
7948 7947 case PROTOCOL_ADT:
7949 7948 case PROTOCOL_ATAPI:
7950 7949 default :
7951 7950 ident_len = devid->ident_length;
7952 7951 sz = ALIGNED_TO_8BYTE_BOUNDARY(sizeof (stmf_dflt_scsi_tptid_t) +
7953 7952 ident_len - 1);
7954 7953 rpt = stmf_remote_port_alloc(sz);
7955 7954 rpt->rport_tptid->format_code = 0;
7956 7955 rpt->rport_tptid->protocol_id = devid->protocol_id;
7957 7956 dflt_tpd = (stmf_dflt_scsi_tptid_t *)rpt->rport_tptid;
7958 7957 SCSI_WRITE16(dflt_tpd->ident_len, ident_len);
7959 7958 (void) memcpy(dflt_tpd->ident, devid->ident, ident_len);
7960 7959 break;
7961 7960 }
7962 7961 return (rpt);
7963 7962
7964 7963 devid_to_remote_port_fail:
7965 7964 stmf_remote_port_free(rpt);
7966 7965 return (NULL);
7967 7966
7968 7967 }
7969 7968
7970 7969 stmf_remote_port_t *
7971 7970 stmf_remote_port_alloc(uint16_t tptid_sz) {
7972 7971 stmf_remote_port_t *rpt;
7973 7972 rpt = (stmf_remote_port_t *)kmem_zalloc(
7974 7973 sizeof (stmf_remote_port_t) + tptid_sz, KM_SLEEP);
7975 7974 rpt->rport_tptid_sz = tptid_sz;
7976 7975 rpt->rport_tptid = (scsi_transport_id_t *)(rpt + 1);
7977 7976 return (rpt);
7978 7977 }
7979 7978
7980 7979 void
7981 7980 stmf_remote_port_free(stmf_remote_port_t *rpt)
7982 7981 {
7983 7982 /*
7984 7983 * Note: stmf_scsilib_devid_to_remote_port() function allocates
7985 7984 * remote port structures for all transports in the same way, So
7986 7985 * it is safe to deallocate it in a protocol independent manner.
7987 7986 * If any of the allocation method changes, corresponding changes
7988 7987 * need to be made here too.
7989 7988 */
7990 7989 kmem_free(rpt, sizeof (stmf_remote_port_t) + rpt->rport_tptid_sz);
7991 7990 }
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