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6659 nvlist_free(NULL) is a no-op
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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);
↓ open down ↓ |
2517 lines elided |
↑ open up ↑ |
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 - if (ppd->ppd_nv)
2529 - nvlist_free(ppd->ppd_nv);
2528 + nvlist_free(ppd->ppd_nv);
2530 2529 ppd->ppd_nv = nv;
2531 2530
2532 2531 /* set the token for writes */
2533 2532 ppd->ppd_token++;
2534 2533 /* return token to caller */
2535 2534 if (ppi_token) {
2536 2535 *ppi_token = ppd->ppd_token;
2537 2536 }
2538 2537
2539 2538 /* If there is a provider registered, do the notifications */
2540 2539 if (ppd->ppd_provider) {
2541 2540 uint32_t cb_flags = 0;
2542 2541
2543 2542 if (stmf_state.stmf_config_state == STMF_CONFIG_INIT)
2544 2543 cb_flags |= STMF_PCB_STMF_ONLINING;
2545 2544 if (ppi->ppi_lu_provider) {
2546 2545 ilp = (stmf_i_lu_provider_t *)ppd->ppd_provider;
2547 2546 if (ilp->ilp_lp->lp_cb == NULL)
2548 2547 goto bail_out;
2549 2548 ilp->ilp_cb_in_progress = 1;
2550 2549 mutex_exit(&stmf_state.stmf_lock);
2551 2550 ilp->ilp_lp->lp_cb(ilp->ilp_lp,
2552 2551 STMF_PROVIDER_DATA_UPDATED, ppd->ppd_nv, cb_flags);
2553 2552 mutex_enter(&stmf_state.stmf_lock);
2554 2553 ilp->ilp_cb_in_progress = 0;
2555 2554 } else {
2556 2555 ipp = (stmf_i_port_provider_t *)ppd->ppd_provider;
2557 2556 if (ipp->ipp_pp->pp_cb == NULL)
2558 2557 goto bail_out;
2559 2558 ipp->ipp_cb_in_progress = 1;
2560 2559 mutex_exit(&stmf_state.stmf_lock);
2561 2560 ipp->ipp_pp->pp_cb(ipp->ipp_pp,
2562 2561 STMF_PROVIDER_DATA_UPDATED, ppd->ppd_nv, cb_flags);
2563 2562 mutex_enter(&stmf_state.stmf_lock);
2564 2563 ipp->ipp_cb_in_progress = 0;
2565 2564 }
2566 2565 }
2567 2566
2568 2567 bail_out:
2569 2568 mutex_exit(&stmf_state.stmf_lock);
2570 2569
2571 2570 return (0);
2572 2571 }
2573 2572
2574 2573 void
2575 2574 stmf_delete_ppd(stmf_pp_data_t *ppd)
2576 2575 {
2577 2576 stmf_pp_data_t **pppd;
2578 2577
2579 2578 ASSERT(mutex_owned(&stmf_state.stmf_lock));
2580 2579 if (ppd->ppd_provider) {
2581 2580 if (ppd->ppd_lu_provider) {
2582 2581 ((stmf_i_lu_provider_t *)
2583 2582 ppd->ppd_provider)->ilp_ppd = NULL;
2584 2583 } else {
2585 2584 ((stmf_i_port_provider_t *)
2586 2585 ppd->ppd_provider)->ipp_ppd = NULL;
2587 2586 }
2588 2587 ppd->ppd_provider = NULL;
2589 2588 }
2590 2589
↓ open down ↓ |
51 lines elided |
↑ open up ↑ |
2591 2590 for (pppd = &stmf_state.stmf_ppdlist; *pppd != NULL;
2592 2591 pppd = &((*pppd)->ppd_next)) {
2593 2592 if (*pppd == ppd)
2594 2593 break;
2595 2594 }
2596 2595
2597 2596 if (*pppd == NULL)
2598 2597 return;
2599 2598
2600 2599 *pppd = ppd->ppd_next;
2601 - if (ppd->ppd_nv)
2602 - nvlist_free(ppd->ppd_nv);
2600 + nvlist_free(ppd->ppd_nv);
2603 2601
2604 2602 kmem_free(ppd, ppd->ppd_alloc_size);
2605 2603 }
2606 2604
2607 2605 int
2608 2606 stmf_delete_ppd_ioctl(stmf_ppioctl_data_t *ppi)
2609 2607 {
2610 2608 stmf_pp_data_t *ppd;
2611 2609 int ret = ENOENT;
2612 2610
2613 2611 if ((ppi->ppi_lu_provider + ppi->ppi_port_provider) != 1) {
2614 2612 return (EINVAL);
2615 2613 }
2616 2614
2617 2615 mutex_enter(&stmf_state.stmf_lock);
2618 2616
2619 2617 for (ppd = stmf_state.stmf_ppdlist; ppd != NULL; ppd = ppd->ppd_next) {
2620 2618 if (ppi->ppi_lu_provider) {
2621 2619 if (!ppd->ppd_lu_provider)
2622 2620 continue;
2623 2621 } else if (ppi->ppi_port_provider) {
2624 2622 if (!ppd->ppd_port_provider)
2625 2623 continue;
2626 2624 }
2627 2625 if (strncmp(ppi->ppi_name, ppd->ppd_name, 254) == 0)
2628 2626 break;
2629 2627 }
2630 2628
2631 2629 if (ppd) {
2632 2630 ret = 0;
2633 2631 stmf_delete_ppd(ppd);
2634 2632 }
2635 2633 mutex_exit(&stmf_state.stmf_lock);
2636 2634
2637 2635 return (ret);
2638 2636 }
2639 2637
2640 2638 int
2641 2639 stmf_get_ppd_ioctl(stmf_ppioctl_data_t *ppi, stmf_ppioctl_data_t *ppi_out,
2642 2640 uint32_t *err_ret)
2643 2641 {
2644 2642 stmf_pp_data_t *ppd;
2645 2643 size_t req_size;
2646 2644 int ret = ENOENT;
2647 2645 char *bufp = (char *)ppi_out->ppi_data;
2648 2646
2649 2647 if ((ppi->ppi_lu_provider + ppi->ppi_port_provider) != 1) {
2650 2648 return (EINVAL);
2651 2649 }
2652 2650
2653 2651 mutex_enter(&stmf_state.stmf_lock);
2654 2652
2655 2653 for (ppd = stmf_state.stmf_ppdlist; ppd != NULL; ppd = ppd->ppd_next) {
2656 2654 if (ppi->ppi_lu_provider) {
2657 2655 if (!ppd->ppd_lu_provider)
2658 2656 continue;
2659 2657 } else if (ppi->ppi_port_provider) {
2660 2658 if (!ppd->ppd_port_provider)
2661 2659 continue;
2662 2660 }
2663 2661 if (strncmp(ppi->ppi_name, ppd->ppd_name, 254) == 0)
2664 2662 break;
2665 2663 }
2666 2664
2667 2665 if (ppd && ppd->ppd_nv) {
2668 2666 ppi_out->ppi_token = ppd->ppd_token;
2669 2667 if ((ret = nvlist_size(ppd->ppd_nv, &req_size,
2670 2668 NV_ENCODE_XDR)) != 0) {
2671 2669 goto done;
2672 2670 }
2673 2671 ppi_out->ppi_data_size = req_size;
2674 2672 if (req_size > ppi->ppi_data_size) {
2675 2673 *err_ret = STMF_IOCERR_INSUFFICIENT_BUF;
2676 2674 ret = EINVAL;
2677 2675 goto done;
2678 2676 }
2679 2677
2680 2678 if ((ret = nvlist_pack(ppd->ppd_nv, &bufp, &req_size,
2681 2679 NV_ENCODE_XDR, 0)) != 0) {
2682 2680 goto done;
2683 2681 }
2684 2682 ret = 0;
2685 2683 }
2686 2684
2687 2685 done:
2688 2686 mutex_exit(&stmf_state.stmf_lock);
2689 2687
2690 2688 return (ret);
2691 2689 }
2692 2690
2693 2691 void
2694 2692 stmf_delete_all_ppds()
2695 2693 {
2696 2694 stmf_pp_data_t *ppd, *nppd;
2697 2695
2698 2696 ASSERT(mutex_owned(&stmf_state.stmf_lock));
2699 2697 for (ppd = stmf_state.stmf_ppdlist; ppd != NULL; ppd = nppd) {
2700 2698 nppd = ppd->ppd_next;
2701 2699 stmf_delete_ppd(ppd);
2702 2700 }
2703 2701 }
2704 2702
2705 2703 /*
2706 2704 * 16 is the max string length of a protocol_ident, increase
2707 2705 * the size if needed.
2708 2706 */
2709 2707 #define STMF_KSTAT_LU_SZ (STMF_GUID_INPUT + 1 + 256)
2710 2708 #define STMF_KSTAT_TGT_SZ (256 * 2 + 16)
2711 2709
2712 2710 /*
2713 2711 * This array matches the Protocol Identifier in stmf_ioctl.h
2714 2712 */
2715 2713 #define MAX_PROTO_STR_LEN 32
2716 2714
2717 2715 char *protocol_ident[PROTOCOL_ANY] = {
2718 2716 "Fibre Channel",
2719 2717 "Parallel SCSI",
2720 2718 "SSA",
2721 2719 "IEEE_1394",
2722 2720 "SRP",
2723 2721 "iSCSI",
2724 2722 "SAS",
2725 2723 "ADT",
2726 2724 "ATAPI",
2727 2725 "UNKNOWN", "UNKNOWN", "UNKNOWN", "UNKNOWN", "UNKNOWN", "UNKNOWN"
2728 2726 };
2729 2727
2730 2728 /*
2731 2729 * Update the lun wait/run queue count
2732 2730 */
2733 2731 static void
2734 2732 stmf_update_kstat_lu_q(scsi_task_t *task, void func())
2735 2733 {
2736 2734 stmf_i_lu_t *ilu;
2737 2735 kstat_io_t *kip;
2738 2736
2739 2737 if (task->task_lu == dlun0)
2740 2738 return;
2741 2739 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private;
2742 2740 if (ilu != NULL && ilu->ilu_kstat_io != NULL) {
2743 2741 kip = KSTAT_IO_PTR(ilu->ilu_kstat_io);
2744 2742 if (kip != NULL) {
2745 2743 func(kip);
2746 2744 }
2747 2745 }
2748 2746 }
2749 2747
2750 2748 /*
2751 2749 * Update the target(lport) wait/run queue count
2752 2750 */
2753 2751 static void
2754 2752 stmf_update_kstat_lport_q(scsi_task_t *task, void func())
2755 2753 {
2756 2754 stmf_i_local_port_t *ilp;
2757 2755 kstat_io_t *kip;
2758 2756
2759 2757 ilp = (stmf_i_local_port_t *)task->task_lport->lport_stmf_private;
2760 2758 if (ilp != NULL && ilp->ilport_kstat_io != NULL) {
2761 2759 kip = KSTAT_IO_PTR(ilp->ilport_kstat_io);
2762 2760 if (kip != NULL) {
2763 2761 mutex_enter(ilp->ilport_kstat_io->ks_lock);
2764 2762 func(kip);
2765 2763 mutex_exit(ilp->ilport_kstat_io->ks_lock);
2766 2764 }
2767 2765 }
2768 2766 }
2769 2767
2770 2768 static void
2771 2769 stmf_update_kstat_lport_io(scsi_task_t *task, stmf_data_buf_t *dbuf)
2772 2770 {
2773 2771 stmf_i_local_port_t *ilp;
2774 2772 kstat_io_t *kip;
2775 2773
2776 2774 ilp = (stmf_i_local_port_t *)task->task_lport->lport_stmf_private;
2777 2775 if (ilp != NULL && ilp->ilport_kstat_io != NULL) {
2778 2776 kip = KSTAT_IO_PTR(ilp->ilport_kstat_io);
2779 2777 if (kip != NULL) {
2780 2778 mutex_enter(ilp->ilport_kstat_io->ks_lock);
2781 2779 STMF_UPDATE_KSTAT_IO(kip, dbuf);
2782 2780 mutex_exit(ilp->ilport_kstat_io->ks_lock);
2783 2781 }
2784 2782 }
2785 2783 }
2786 2784
2787 2785 static void
2788 2786 stmf_update_kstat_lu_io(scsi_task_t *task, stmf_data_buf_t *dbuf)
2789 2787 {
2790 2788 stmf_i_lu_t *ilu;
2791 2789 kstat_io_t *kip;
2792 2790
2793 2791 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private;
2794 2792 if (ilu != NULL && ilu->ilu_kstat_io != NULL) {
2795 2793 kip = KSTAT_IO_PTR(ilu->ilu_kstat_io);
2796 2794 if (kip != NULL) {
2797 2795 mutex_enter(ilu->ilu_kstat_io->ks_lock);
2798 2796 STMF_UPDATE_KSTAT_IO(kip, dbuf);
2799 2797 mutex_exit(ilu->ilu_kstat_io->ks_lock);
2800 2798 }
2801 2799 }
2802 2800 }
2803 2801
2804 2802 static void
2805 2803 stmf_create_kstat_lu(stmf_i_lu_t *ilu)
2806 2804 {
2807 2805 char ks_nm[KSTAT_STRLEN];
2808 2806 stmf_kstat_lu_info_t *ks_lu;
2809 2807
2810 2808 /* create kstat lun info */
2811 2809 ks_lu = (stmf_kstat_lu_info_t *)kmem_zalloc(STMF_KSTAT_LU_SZ,
2812 2810 KM_NOSLEEP);
2813 2811 if (ks_lu == NULL) {
2814 2812 cmn_err(CE_WARN, "STMF: kmem_zalloc failed");
2815 2813 return;
2816 2814 }
2817 2815
2818 2816 bzero(ks_nm, sizeof (ks_nm));
2819 2817 (void) sprintf(ks_nm, "stmf_lu_%"PRIxPTR"", (uintptr_t)ilu);
2820 2818 if ((ilu->ilu_kstat_info = kstat_create(STMF_MODULE_NAME, 0,
2821 2819 ks_nm, "misc", KSTAT_TYPE_NAMED,
2822 2820 sizeof (stmf_kstat_lu_info_t) / sizeof (kstat_named_t),
2823 2821 KSTAT_FLAG_VIRTUAL)) == NULL) {
2824 2822 kmem_free(ks_lu, STMF_KSTAT_LU_SZ);
2825 2823 cmn_err(CE_WARN, "STMF: kstat_create lu failed");
2826 2824 return;
2827 2825 }
2828 2826
2829 2827 ilu->ilu_kstat_info->ks_data_size = STMF_KSTAT_LU_SZ;
2830 2828 ilu->ilu_kstat_info->ks_data = ks_lu;
2831 2829
2832 2830 kstat_named_init(&ks_lu->i_lun_guid, "lun-guid",
2833 2831 KSTAT_DATA_STRING);
2834 2832 kstat_named_init(&ks_lu->i_lun_alias, "lun-alias",
2835 2833 KSTAT_DATA_STRING);
2836 2834
2837 2835 /* convert guid to hex string */
2838 2836 int i;
2839 2837 uint8_t *p = ilu->ilu_lu->lu_id->ident;
2840 2838 bzero(ilu->ilu_ascii_hex_guid, sizeof (ilu->ilu_ascii_hex_guid));
2841 2839 for (i = 0; i < STMF_GUID_INPUT / 2; i++) {
2842 2840 (void) sprintf(&ilu->ilu_ascii_hex_guid[i * 2], "%02x", p[i]);
2843 2841 }
2844 2842 kstat_named_setstr(&ks_lu->i_lun_guid,
2845 2843 (const char *)ilu->ilu_ascii_hex_guid);
2846 2844 kstat_named_setstr(&ks_lu->i_lun_alias,
2847 2845 (const char *)ilu->ilu_lu->lu_alias);
2848 2846 kstat_install(ilu->ilu_kstat_info);
2849 2847
2850 2848 /* create kstat lun io */
2851 2849 bzero(ks_nm, sizeof (ks_nm));
2852 2850 (void) sprintf(ks_nm, "stmf_lu_io_%"PRIxPTR"", (uintptr_t)ilu);
2853 2851 if ((ilu->ilu_kstat_io = kstat_create(STMF_MODULE_NAME, 0,
2854 2852 ks_nm, "io", KSTAT_TYPE_IO, 1, 0)) == NULL) {
2855 2853 cmn_err(CE_WARN, "STMF: kstat_create lu_io failed");
2856 2854 return;
2857 2855 }
2858 2856 mutex_init(&ilu->ilu_kstat_lock, NULL, MUTEX_DRIVER, 0);
2859 2857 ilu->ilu_kstat_io->ks_lock = &ilu->ilu_kstat_lock;
2860 2858 kstat_install(ilu->ilu_kstat_io);
2861 2859 }
2862 2860
2863 2861 static void
2864 2862 stmf_create_kstat_lport(stmf_i_local_port_t *ilport)
2865 2863 {
2866 2864 char ks_nm[KSTAT_STRLEN];
2867 2865 stmf_kstat_tgt_info_t *ks_tgt;
2868 2866 int id, len;
2869 2867
2870 2868 /* create kstat lport info */
2871 2869 ks_tgt = (stmf_kstat_tgt_info_t *)kmem_zalloc(STMF_KSTAT_TGT_SZ,
2872 2870 KM_NOSLEEP);
2873 2871 if (ks_tgt == NULL) {
2874 2872 cmn_err(CE_WARN, "STMF: kmem_zalloc failed");
2875 2873 return;
2876 2874 }
2877 2875
2878 2876 bzero(ks_nm, sizeof (ks_nm));
2879 2877 (void) sprintf(ks_nm, "stmf_tgt_%"PRIxPTR"", (uintptr_t)ilport);
2880 2878 if ((ilport->ilport_kstat_info = kstat_create(STMF_MODULE_NAME,
2881 2879 0, ks_nm, "misc", KSTAT_TYPE_NAMED,
2882 2880 sizeof (stmf_kstat_tgt_info_t) / sizeof (kstat_named_t),
2883 2881 KSTAT_FLAG_VIRTUAL)) == NULL) {
2884 2882 kmem_free(ks_tgt, STMF_KSTAT_TGT_SZ);
2885 2883 cmn_err(CE_WARN, "STMF: kstat_create target failed");
2886 2884 return;
2887 2885 }
2888 2886
2889 2887 ilport->ilport_kstat_info->ks_data_size = STMF_KSTAT_TGT_SZ;
2890 2888 ilport->ilport_kstat_info->ks_data = ks_tgt;
2891 2889
2892 2890 kstat_named_init(&ks_tgt->i_tgt_name, "target-name",
2893 2891 KSTAT_DATA_STRING);
2894 2892 kstat_named_init(&ks_tgt->i_tgt_alias, "target-alias",
2895 2893 KSTAT_DATA_STRING);
2896 2894 kstat_named_init(&ks_tgt->i_protocol, "protocol",
2897 2895 KSTAT_DATA_STRING);
2898 2896
2899 2897 /* ident might not be null terminated */
2900 2898 len = ilport->ilport_lport->lport_id->ident_length;
2901 2899 bcopy(ilport->ilport_lport->lport_id->ident,
2902 2900 ilport->ilport_kstat_tgt_name, len);
2903 2901 ilport->ilport_kstat_tgt_name[len + 1] = NULL;
2904 2902 kstat_named_setstr(&ks_tgt->i_tgt_name,
2905 2903 (const char *)ilport->ilport_kstat_tgt_name);
2906 2904 kstat_named_setstr(&ks_tgt->i_tgt_alias,
2907 2905 (const char *)ilport->ilport_lport->lport_alias);
2908 2906 /* protocol */
2909 2907 if ((id = ilport->ilport_lport->lport_id->protocol_id) > PROTOCOL_ANY) {
2910 2908 cmn_err(CE_WARN, "STMF: protocol_id out of bound");
2911 2909 id = PROTOCOL_ANY;
2912 2910 }
2913 2911 kstat_named_setstr(&ks_tgt->i_protocol, protocol_ident[id]);
2914 2912 kstat_install(ilport->ilport_kstat_info);
2915 2913
2916 2914 /* create kstat lport io */
2917 2915 bzero(ks_nm, sizeof (ks_nm));
2918 2916 (void) sprintf(ks_nm, "stmf_tgt_io_%"PRIxPTR"", (uintptr_t)ilport);
2919 2917 if ((ilport->ilport_kstat_io = kstat_create(STMF_MODULE_NAME, 0,
2920 2918 ks_nm, "io", KSTAT_TYPE_IO, 1, 0)) == NULL) {
2921 2919 cmn_err(CE_WARN, "STMF: kstat_create target_io failed");
2922 2920 return;
2923 2921 }
2924 2922 mutex_init(&ilport->ilport_kstat_lock, NULL, MUTEX_DRIVER, 0);
2925 2923 ilport->ilport_kstat_io->ks_lock = &ilport->ilport_kstat_lock;
2926 2924 kstat_install(ilport->ilport_kstat_io);
2927 2925 }
2928 2926
2929 2927 /*
2930 2928 * set the asymmetric access state for a logical unit
2931 2929 * caller is responsible for establishing SCSI unit attention on
2932 2930 * state change
2933 2931 */
2934 2932 stmf_status_t
2935 2933 stmf_set_lu_access(stmf_lu_t *lu, uint8_t access_state)
2936 2934 {
2937 2935 stmf_i_lu_t *ilu;
2938 2936 uint8_t *p1, *p2;
2939 2937
2940 2938 if ((access_state != STMF_LU_STANDBY) &&
2941 2939 (access_state != STMF_LU_ACTIVE)) {
2942 2940 return (STMF_INVALID_ARG);
2943 2941 }
2944 2942
2945 2943 p1 = &lu->lu_id->ident[0];
2946 2944 mutex_enter(&stmf_state.stmf_lock);
2947 2945 if (stmf_state.stmf_inventory_locked) {
2948 2946 mutex_exit(&stmf_state.stmf_lock);
2949 2947 return (STMF_BUSY);
2950 2948 }
2951 2949
2952 2950 for (ilu = stmf_state.stmf_ilulist; ilu != NULL; ilu = ilu->ilu_next) {
2953 2951 p2 = &ilu->ilu_lu->lu_id->ident[0];
2954 2952 if (bcmp(p1, p2, 16) == 0) {
2955 2953 break;
2956 2954 }
2957 2955 }
2958 2956
2959 2957 if (!ilu) {
2960 2958 ilu = (stmf_i_lu_t *)lu->lu_stmf_private;
2961 2959 } else {
2962 2960 /*
2963 2961 * We're changing access state on an existing logical unit
2964 2962 * Send the proxy registration message for this logical unit
2965 2963 * if we're in alua mode.
2966 2964 * If the requested state is STMF_LU_ACTIVE, we want to register
2967 2965 * this logical unit.
2968 2966 * If the requested state is STMF_LU_STANDBY, we're going to
2969 2967 * abort all tasks for this logical unit.
2970 2968 */
2971 2969 if (stmf_state.stmf_alua_state == 1 &&
2972 2970 access_state == STMF_LU_ACTIVE) {
2973 2971 stmf_ic_msg_status_t ic_ret = STMF_IC_MSG_SUCCESS;
2974 2972 stmf_ic_msg_t *ic_reg_lun;
2975 2973 if (lu->lu_lp && lu->lu_lp->lp_lpif_rev == LPIF_REV_2 &&
2976 2974 lu->lu_lp->lp_alua_support) {
2977 2975 ilu->ilu_alua = 1;
2978 2976 /* allocate the register message */
2979 2977 ic_reg_lun = ic_lun_active_msg_alloc(p1,
2980 2978 lu->lu_lp->lp_name,
2981 2979 lu->lu_proxy_reg_arg_len,
2982 2980 (uint8_t *)lu->lu_proxy_reg_arg,
2983 2981 stmf_proxy_msg_id);
2984 2982 /* send the message */
2985 2983 if (ic_reg_lun) {
2986 2984 ic_ret = ic_tx_msg(ic_reg_lun);
2987 2985 if (ic_ret == STMF_IC_MSG_SUCCESS) {
2988 2986 stmf_proxy_msg_id++;
2989 2987 }
2990 2988 }
2991 2989 }
2992 2990 } else if (stmf_state.stmf_alua_state == 1 &&
2993 2991 access_state == STMF_LU_STANDBY) {
2994 2992 /* abort all tasks for this lu */
2995 2993 stmf_task_lu_killall(lu, NULL, STMF_ABORTED);
2996 2994 }
2997 2995 }
2998 2996
2999 2997 ilu->ilu_access = access_state;
3000 2998
3001 2999 mutex_exit(&stmf_state.stmf_lock);
3002 3000 return (STMF_SUCCESS);
3003 3001 }
3004 3002
3005 3003
3006 3004 stmf_status_t
3007 3005 stmf_register_lu(stmf_lu_t *lu)
3008 3006 {
3009 3007 stmf_i_lu_t *ilu;
3010 3008 uint8_t *p1, *p2;
3011 3009 stmf_state_change_info_t ssci;
3012 3010 stmf_id_data_t *luid;
3013 3011
3014 3012 if ((lu->lu_id->ident_type != ID_TYPE_NAA) ||
3015 3013 (lu->lu_id->ident_length != 16) ||
3016 3014 ((lu->lu_id->ident[0] & 0xf0) != 0x60)) {
3017 3015 return (STMF_INVALID_ARG);
3018 3016 }
3019 3017 p1 = &lu->lu_id->ident[0];
3020 3018 mutex_enter(&stmf_state.stmf_lock);
3021 3019 if (stmf_state.stmf_inventory_locked) {
3022 3020 mutex_exit(&stmf_state.stmf_lock);
3023 3021 return (STMF_BUSY);
3024 3022 }
3025 3023
3026 3024 for (ilu = stmf_state.stmf_ilulist; ilu != NULL; ilu = ilu->ilu_next) {
3027 3025 p2 = &ilu->ilu_lu->lu_id->ident[0];
3028 3026 if (bcmp(p1, p2, 16) == 0) {
3029 3027 mutex_exit(&stmf_state.stmf_lock);
3030 3028 return (STMF_ALREADY);
3031 3029 }
3032 3030 }
3033 3031
3034 3032 ilu = (stmf_i_lu_t *)lu->lu_stmf_private;
3035 3033 luid = stmf_lookup_id(&stmf_state.stmf_luid_list,
3036 3034 lu->lu_id->ident_length, lu->lu_id->ident);
3037 3035 if (luid) {
3038 3036 luid->id_pt_to_object = (void *)ilu;
3039 3037 ilu->ilu_luid = luid;
3040 3038 }
3041 3039 ilu->ilu_alias = NULL;
3042 3040
3043 3041 ilu->ilu_next = stmf_state.stmf_ilulist;
3044 3042 ilu->ilu_prev = NULL;
3045 3043 if (ilu->ilu_next)
3046 3044 ilu->ilu_next->ilu_prev = ilu;
3047 3045 stmf_state.stmf_ilulist = ilu;
3048 3046 stmf_state.stmf_nlus++;
3049 3047 if (lu->lu_lp) {
3050 3048 ((stmf_i_lu_provider_t *)
3051 3049 (lu->lu_lp->lp_stmf_private))->ilp_nlus++;
3052 3050 }
3053 3051 ilu->ilu_cur_task_cntr = &ilu->ilu_task_cntr1;
3054 3052 STMF_EVENT_ALLOC_HANDLE(ilu->ilu_event_hdl);
3055 3053 cv_init(&ilu->ilu_offline_pending_cv, NULL, CV_DRIVER, NULL);
3056 3054 stmf_create_kstat_lu(ilu);
3057 3055 /*
3058 3056 * register with proxy module if available and logical unit
3059 3057 * is in active state
3060 3058 */
3061 3059 if (stmf_state.stmf_alua_state == 1 &&
3062 3060 ilu->ilu_access == STMF_LU_ACTIVE) {
3063 3061 stmf_ic_msg_status_t ic_ret = STMF_IC_MSG_SUCCESS;
3064 3062 stmf_ic_msg_t *ic_reg_lun;
3065 3063 if (lu->lu_lp && lu->lu_lp->lp_lpif_rev == LPIF_REV_2 &&
3066 3064 lu->lu_lp->lp_alua_support) {
3067 3065 ilu->ilu_alua = 1;
3068 3066 /* allocate the register message */
3069 3067 ic_reg_lun = ic_reg_lun_msg_alloc(p1,
3070 3068 lu->lu_lp->lp_name, lu->lu_proxy_reg_arg_len,
3071 3069 (uint8_t *)lu->lu_proxy_reg_arg, stmf_proxy_msg_id);
3072 3070 /* send the message */
3073 3071 if (ic_reg_lun) {
3074 3072 ic_ret = ic_tx_msg(ic_reg_lun);
3075 3073 if (ic_ret == STMF_IC_MSG_SUCCESS) {
3076 3074 stmf_proxy_msg_id++;
3077 3075 }
3078 3076 }
3079 3077 }
3080 3078 }
3081 3079 mutex_exit(&stmf_state.stmf_lock);
3082 3080
3083 3081 /* check the default state for lu */
3084 3082 if (stmf_state.stmf_default_lu_state == STMF_STATE_OFFLINE) {
3085 3083 ilu->ilu_prev_state = STMF_STATE_OFFLINE;
3086 3084 } else {
3087 3085 ilu->ilu_prev_state = STMF_STATE_ONLINE;
3088 3086 if (stmf_state.stmf_service_running) {
3089 3087 ssci.st_rflags = 0;
3090 3088 ssci.st_additional_info = NULL;
3091 3089 (void) stmf_ctl(STMF_CMD_LU_ONLINE, lu, &ssci);
3092 3090 }
3093 3091 }
3094 3092
3095 3093 /* XXX: Generate event */
3096 3094 return (STMF_SUCCESS);
3097 3095 }
3098 3096
3099 3097 stmf_status_t
3100 3098 stmf_deregister_lu(stmf_lu_t *lu)
3101 3099 {
3102 3100 stmf_i_lu_t *ilu;
3103 3101
3104 3102 mutex_enter(&stmf_state.stmf_lock);
3105 3103 if (stmf_state.stmf_inventory_locked) {
3106 3104 mutex_exit(&stmf_state.stmf_lock);
3107 3105 return (STMF_BUSY);
3108 3106 }
3109 3107 ilu = stmf_lookup_lu(lu);
3110 3108 if (ilu == NULL) {
3111 3109 mutex_exit(&stmf_state.stmf_lock);
3112 3110 return (STMF_INVALID_ARG);
3113 3111 }
3114 3112 if (ilu->ilu_state == STMF_STATE_OFFLINE) {
3115 3113 ASSERT(ilu->ilu_ntasks == ilu->ilu_ntasks_free);
3116 3114 while (ilu->ilu_flags & ILU_STALL_DEREGISTER) {
3117 3115 cv_wait(&stmf_state.stmf_cv, &stmf_state.stmf_lock);
3118 3116 }
3119 3117 if (ilu->ilu_ntasks) {
3120 3118 stmf_i_scsi_task_t *itask, *nitask;
3121 3119
3122 3120 nitask = ilu->ilu_tasks;
3123 3121 do {
3124 3122 itask = nitask;
3125 3123 nitask = itask->itask_lu_next;
3126 3124 lu->lu_task_free(itask->itask_task);
3127 3125 stmf_free(itask->itask_task);
3128 3126 } while (nitask != NULL);
3129 3127
3130 3128 ilu->ilu_tasks = ilu->ilu_free_tasks = NULL;
3131 3129 ilu->ilu_ntasks = ilu->ilu_ntasks_free = 0;
3132 3130 }
3133 3131 /* de-register with proxy if available */
3134 3132 if (ilu->ilu_access == STMF_LU_ACTIVE &&
3135 3133 stmf_state.stmf_alua_state == 1) {
3136 3134 /* de-register with proxy module */
3137 3135 stmf_ic_msg_status_t ic_ret = STMF_IC_MSG_SUCCESS;
3138 3136 stmf_ic_msg_t *ic_dereg_lun;
3139 3137 if (lu->lu_lp && lu->lu_lp->lp_lpif_rev == LPIF_REV_2 &&
3140 3138 lu->lu_lp->lp_alua_support) {
3141 3139 ilu->ilu_alua = 1;
3142 3140 /* allocate the de-register message */
3143 3141 ic_dereg_lun = ic_dereg_lun_msg_alloc(
3144 3142 lu->lu_id->ident, lu->lu_lp->lp_name, 0,
3145 3143 NULL, stmf_proxy_msg_id);
3146 3144 /* send the message */
3147 3145 if (ic_dereg_lun) {
3148 3146 ic_ret = ic_tx_msg(ic_dereg_lun);
3149 3147 if (ic_ret == STMF_IC_MSG_SUCCESS) {
3150 3148 stmf_proxy_msg_id++;
3151 3149 }
3152 3150 }
3153 3151 }
3154 3152 }
3155 3153
3156 3154 if (ilu->ilu_next)
3157 3155 ilu->ilu_next->ilu_prev = ilu->ilu_prev;
3158 3156 if (ilu->ilu_prev)
3159 3157 ilu->ilu_prev->ilu_next = ilu->ilu_next;
3160 3158 else
3161 3159 stmf_state.stmf_ilulist = ilu->ilu_next;
3162 3160 stmf_state.stmf_nlus--;
3163 3161
3164 3162 if (ilu == stmf_state.stmf_svc_ilu_draining) {
3165 3163 stmf_state.stmf_svc_ilu_draining = ilu->ilu_next;
3166 3164 }
3167 3165 if (ilu == stmf_state.stmf_svc_ilu_timing) {
3168 3166 stmf_state.stmf_svc_ilu_timing = ilu->ilu_next;
3169 3167 }
3170 3168 if (lu->lu_lp) {
3171 3169 ((stmf_i_lu_provider_t *)
3172 3170 (lu->lu_lp->lp_stmf_private))->ilp_nlus--;
3173 3171 }
3174 3172 if (ilu->ilu_luid) {
3175 3173 ((stmf_id_data_t *)ilu->ilu_luid)->id_pt_to_object =
3176 3174 NULL;
3177 3175 ilu->ilu_luid = NULL;
3178 3176 }
3179 3177 STMF_EVENT_FREE_HANDLE(ilu->ilu_event_hdl);
3180 3178 } else {
3181 3179 mutex_exit(&stmf_state.stmf_lock);
3182 3180 return (STMF_BUSY);
3183 3181 }
3184 3182 if (ilu->ilu_kstat_info) {
3185 3183 kmem_free(ilu->ilu_kstat_info->ks_data,
3186 3184 ilu->ilu_kstat_info->ks_data_size);
3187 3185 kstat_delete(ilu->ilu_kstat_info);
3188 3186 }
3189 3187 if (ilu->ilu_kstat_io) {
3190 3188 kstat_delete(ilu->ilu_kstat_io);
3191 3189 mutex_destroy(&ilu->ilu_kstat_lock);
3192 3190 }
3193 3191 cv_destroy(&ilu->ilu_offline_pending_cv);
3194 3192 mutex_exit(&stmf_state.stmf_lock);
3195 3193 return (STMF_SUCCESS);
3196 3194 }
3197 3195
3198 3196 void
3199 3197 stmf_set_port_standby(stmf_local_port_t *lport, uint16_t rtpid)
3200 3198 {
3201 3199 stmf_i_local_port_t *ilport =
3202 3200 (stmf_i_local_port_t *)lport->lport_stmf_private;
3203 3201 ilport->ilport_rtpid = rtpid;
3204 3202 ilport->ilport_standby = 1;
3205 3203 }
3206 3204
3207 3205 void
3208 3206 stmf_set_port_alua(stmf_local_port_t *lport)
3209 3207 {
3210 3208 stmf_i_local_port_t *ilport =
3211 3209 (stmf_i_local_port_t *)lport->lport_stmf_private;
3212 3210 ilport->ilport_alua = 1;
3213 3211 }
3214 3212
3215 3213 stmf_status_t
3216 3214 stmf_register_local_port(stmf_local_port_t *lport)
3217 3215 {
3218 3216 stmf_i_local_port_t *ilport;
3219 3217 stmf_state_change_info_t ssci;
3220 3218 int start_workers = 0;
3221 3219
3222 3220 mutex_enter(&stmf_state.stmf_lock);
3223 3221 if (stmf_state.stmf_inventory_locked) {
3224 3222 mutex_exit(&stmf_state.stmf_lock);
3225 3223 return (STMF_BUSY);
3226 3224 }
3227 3225 ilport = (stmf_i_local_port_t *)lport->lport_stmf_private;
3228 3226 rw_init(&ilport->ilport_lock, NULL, RW_DRIVER, NULL);
3229 3227
3230 3228 ilport->ilport_instance =
3231 3229 id_alloc_nosleep(stmf_state.stmf_ilport_inst_space);
3232 3230 if (ilport->ilport_instance == -1) {
3233 3231 mutex_exit(&stmf_state.stmf_lock);
3234 3232 return (STMF_FAILURE);
3235 3233 }
3236 3234 ilport->ilport_next = stmf_state.stmf_ilportlist;
3237 3235 ilport->ilport_prev = NULL;
3238 3236 if (ilport->ilport_next)
3239 3237 ilport->ilport_next->ilport_prev = ilport;
3240 3238 stmf_state.stmf_ilportlist = ilport;
3241 3239 stmf_state.stmf_nlports++;
3242 3240 if (lport->lport_pp) {
3243 3241 ((stmf_i_port_provider_t *)
3244 3242 (lport->lport_pp->pp_stmf_private))->ipp_npps++;
3245 3243 }
3246 3244 ilport->ilport_tg =
3247 3245 stmf_lookup_group_for_target(lport->lport_id->ident,
3248 3246 lport->lport_id->ident_length);
3249 3247
3250 3248 /*
3251 3249 * rtpid will/must be set if this is a standby port
3252 3250 * only register ports that are not standby (proxy) ports
3253 3251 * and ports that are alua participants (ilport_alua == 1)
3254 3252 */
3255 3253 if (ilport->ilport_standby == 0) {
3256 3254 ilport->ilport_rtpid = atomic_inc_16_nv(&stmf_rtpid_counter);
3257 3255 }
3258 3256
3259 3257 if (stmf_state.stmf_alua_state == 1 &&
3260 3258 ilport->ilport_standby == 0 &&
3261 3259 ilport->ilport_alua == 1) {
3262 3260 stmf_ic_msg_t *ic_reg_port;
3263 3261 stmf_ic_msg_status_t ic_ret;
3264 3262 stmf_local_port_t *lport;
3265 3263 lport = ilport->ilport_lport;
3266 3264 ic_reg_port = ic_reg_port_msg_alloc(
3267 3265 lport->lport_id, ilport->ilport_rtpid,
3268 3266 0, NULL, stmf_proxy_msg_id);
3269 3267 if (ic_reg_port) {
3270 3268 ic_ret = ic_tx_msg(ic_reg_port);
3271 3269 if (ic_ret == STMF_IC_MSG_SUCCESS) {
3272 3270 ilport->ilport_reg_msgid = stmf_proxy_msg_id++;
3273 3271 } else {
3274 3272 cmn_err(CE_WARN, "error on port registration "
3275 3273 "port - %s", ilport->ilport_kstat_tgt_name);
3276 3274 }
3277 3275 }
3278 3276 }
3279 3277 STMF_EVENT_ALLOC_HANDLE(ilport->ilport_event_hdl);
3280 3278 stmf_create_kstat_lport(ilport);
3281 3279 if (stmf_workers_state == STMF_WORKERS_DISABLED) {
3282 3280 stmf_workers_state = STMF_WORKERS_ENABLING;
3283 3281 start_workers = 1;
3284 3282 }
3285 3283 mutex_exit(&stmf_state.stmf_lock);
3286 3284
3287 3285 if (start_workers)
3288 3286 stmf_worker_init();
3289 3287
3290 3288 /* the default state of LPORT */
3291 3289
3292 3290 if (stmf_state.stmf_default_lport_state == STMF_STATE_OFFLINE) {
3293 3291 ilport->ilport_prev_state = STMF_STATE_OFFLINE;
3294 3292 } else {
3295 3293 ilport->ilport_prev_state = STMF_STATE_ONLINE;
3296 3294 if (stmf_state.stmf_service_running) {
3297 3295 ssci.st_rflags = 0;
3298 3296 ssci.st_additional_info = NULL;
3299 3297 (void) stmf_ctl(STMF_CMD_LPORT_ONLINE, lport, &ssci);
3300 3298 }
3301 3299 }
3302 3300
3303 3301 /* XXX: Generate event */
3304 3302 return (STMF_SUCCESS);
3305 3303 }
3306 3304
3307 3305 stmf_status_t
3308 3306 stmf_deregister_local_port(stmf_local_port_t *lport)
3309 3307 {
3310 3308 stmf_i_local_port_t *ilport;
3311 3309
3312 3310 mutex_enter(&stmf_state.stmf_lock);
3313 3311 if (stmf_state.stmf_inventory_locked) {
3314 3312 mutex_exit(&stmf_state.stmf_lock);
3315 3313 return (STMF_BUSY);
3316 3314 }
3317 3315
3318 3316 /* dequeue all object requests from active queue */
3319 3317 stmf_svc_kill_obj_requests(lport);
3320 3318
3321 3319 ilport = (stmf_i_local_port_t *)lport->lport_stmf_private;
3322 3320
3323 3321 /*
3324 3322 * deregister ports that are not standby (proxy)
3325 3323 */
3326 3324 if (stmf_state.stmf_alua_state == 1 &&
3327 3325 ilport->ilport_standby == 0 &&
3328 3326 ilport->ilport_alua == 1) {
3329 3327 stmf_ic_msg_t *ic_dereg_port;
3330 3328 stmf_ic_msg_status_t ic_ret;
3331 3329 ic_dereg_port = ic_dereg_port_msg_alloc(
3332 3330 lport->lport_id, 0, NULL, stmf_proxy_msg_id);
3333 3331 if (ic_dereg_port) {
3334 3332 ic_ret = ic_tx_msg(ic_dereg_port);
3335 3333 if (ic_ret == STMF_IC_MSG_SUCCESS) {
3336 3334 stmf_proxy_msg_id++;
3337 3335 }
3338 3336 }
3339 3337 }
3340 3338
3341 3339 if (ilport->ilport_nsessions == 0) {
3342 3340 if (ilport->ilport_next)
3343 3341 ilport->ilport_next->ilport_prev = ilport->ilport_prev;
3344 3342 if (ilport->ilport_prev)
3345 3343 ilport->ilport_prev->ilport_next = ilport->ilport_next;
3346 3344 else
3347 3345 stmf_state.stmf_ilportlist = ilport->ilport_next;
3348 3346 id_free(stmf_state.stmf_ilport_inst_space,
3349 3347 ilport->ilport_instance);
3350 3348 rw_destroy(&ilport->ilport_lock);
3351 3349 stmf_state.stmf_nlports--;
3352 3350 if (lport->lport_pp) {
3353 3351 ((stmf_i_port_provider_t *)
3354 3352 (lport->lport_pp->pp_stmf_private))->ipp_npps--;
3355 3353 }
3356 3354 ilport->ilport_tg = NULL;
3357 3355 STMF_EVENT_FREE_HANDLE(ilport->ilport_event_hdl);
3358 3356 } else {
3359 3357 mutex_exit(&stmf_state.stmf_lock);
3360 3358 return (STMF_BUSY);
3361 3359 }
3362 3360 if (ilport->ilport_kstat_info) {
3363 3361 kmem_free(ilport->ilport_kstat_info->ks_data,
3364 3362 ilport->ilport_kstat_info->ks_data_size);
3365 3363 kstat_delete(ilport->ilport_kstat_info);
3366 3364 }
3367 3365 if (ilport->ilport_kstat_io) {
3368 3366 kstat_delete(ilport->ilport_kstat_io);
3369 3367 mutex_destroy(&ilport->ilport_kstat_lock);
3370 3368 }
3371 3369 mutex_exit(&stmf_state.stmf_lock);
3372 3370 return (STMF_SUCCESS);
3373 3371 }
3374 3372
3375 3373 /*
3376 3374 * Rport id/instance mappings remain valid until STMF is unloaded
3377 3375 */
3378 3376 static int
3379 3377 stmf_irport_compare(const void *void_irport1, const void *void_irport2)
3380 3378 {
3381 3379 const stmf_i_remote_port_t *irport1 = void_irport1;
3382 3380 const stmf_i_remote_port_t *irport2 = void_irport2;
3383 3381 int result;
3384 3382
3385 3383 /* Sort by code set then ident */
3386 3384 if (irport1->irport_id->code_set <
3387 3385 irport2->irport_id->code_set) {
3388 3386 return (-1);
3389 3387 } else if (irport1->irport_id->code_set >
3390 3388 irport2->irport_id->code_set) {
3391 3389 return (1);
3392 3390 }
3393 3391
3394 3392 /* Next by ident length */
3395 3393 if (irport1->irport_id->ident_length <
3396 3394 irport2->irport_id->ident_length) {
3397 3395 return (-1);
3398 3396 } else if (irport1->irport_id->ident_length >
3399 3397 irport2->irport_id->ident_length) {
3400 3398 return (1);
3401 3399 }
3402 3400
3403 3401 /* Code set and ident length both match, now compare idents */
3404 3402 result = memcmp(irport1->irport_id->ident,
3405 3403 irport2->irport_id->ident,
3406 3404 irport1->irport_id->ident_length);
3407 3405
3408 3406 if (result < 0) {
3409 3407 return (-1);
3410 3408 } else if (result > 0) {
3411 3409 return (1);
3412 3410 }
3413 3411
3414 3412 return (0);
3415 3413 }
3416 3414
3417 3415 static stmf_i_remote_port_t *
3418 3416 stmf_irport_create(scsi_devid_desc_t *rport_devid)
3419 3417 {
3420 3418 int alloc_len;
3421 3419 stmf_i_remote_port_t *irport;
3422 3420
3423 3421 /*
3424 3422 * Lookup will bump the refcnt if there's an existing rport
3425 3423 * context for this identifier.
3426 3424 */
3427 3425 ASSERT(mutex_owned(&stmf_state.stmf_lock));
3428 3426
3429 3427 alloc_len = sizeof (*irport) + sizeof (scsi_devid_desc_t) +
3430 3428 rport_devid->ident_length - 1;
3431 3429 irport = kmem_zalloc(alloc_len, KM_NOSLEEP);
3432 3430 if (irport == NULL) {
3433 3431 return (NULL);
3434 3432 }
3435 3433
3436 3434 irport->irport_instance =
3437 3435 id_alloc_nosleep(stmf_state.stmf_irport_inst_space);
3438 3436 if (irport->irport_instance == -1) {
3439 3437 kmem_free(irport, alloc_len);
3440 3438 return (NULL);
3441 3439 }
3442 3440
3443 3441 irport->irport_id =
3444 3442 (struct scsi_devid_desc *)(irport + 1); /* Ptr. Arith. */
3445 3443 bcopy(rport_devid, irport->irport_id,
3446 3444 sizeof (scsi_devid_desc_t) + rport_devid->ident_length - 1);
3447 3445 irport->irport_refcnt = 1;
3448 3446 mutex_init(&irport->irport_mutex, NULL, MUTEX_DEFAULT, NULL);
3449 3447
3450 3448 return (irport);
3451 3449 }
3452 3450
3453 3451 static void
3454 3452 stmf_irport_destroy(stmf_i_remote_port_t *irport)
3455 3453 {
3456 3454 id_free(stmf_state.stmf_irport_inst_space, irport->irport_instance);
3457 3455 mutex_destroy(&irport->irport_mutex);
3458 3456 kmem_free(irport, sizeof (*irport) + sizeof (scsi_devid_desc_t) +
3459 3457 irport->irport_id->ident_length - 1);
3460 3458 }
3461 3459
3462 3460 static stmf_i_remote_port_t *
3463 3461 stmf_irport_register(scsi_devid_desc_t *rport_devid)
3464 3462 {
3465 3463 stmf_i_remote_port_t *irport;
3466 3464
3467 3465 mutex_enter(&stmf_state.stmf_lock);
3468 3466
3469 3467 /*
3470 3468 * Lookup will bump the refcnt if there's an existing rport
3471 3469 * context for this identifier.
3472 3470 */
3473 3471 if ((irport = stmf_irport_lookup_locked(rport_devid)) != NULL) {
3474 3472 mutex_exit(&stmf_state.stmf_lock);
3475 3473 return (irport);
3476 3474 }
3477 3475
3478 3476 irport = stmf_irport_create(rport_devid);
3479 3477 if (irport == NULL) {
3480 3478 mutex_exit(&stmf_state.stmf_lock);
3481 3479 return (NULL);
3482 3480 }
3483 3481
3484 3482 avl_add(&stmf_state.stmf_irportlist, irport);
3485 3483 mutex_exit(&stmf_state.stmf_lock);
3486 3484
3487 3485 return (irport);
3488 3486 }
3489 3487
3490 3488 static stmf_i_remote_port_t *
3491 3489 stmf_irport_lookup_locked(scsi_devid_desc_t *rport_devid)
3492 3490 {
3493 3491 stmf_i_remote_port_t *irport;
3494 3492 stmf_i_remote_port_t tmp_irport;
3495 3493
3496 3494 ASSERT(mutex_owned(&stmf_state.stmf_lock));
3497 3495 tmp_irport.irport_id = rport_devid;
3498 3496 irport = avl_find(&stmf_state.stmf_irportlist, &tmp_irport, NULL);
3499 3497 if (irport != NULL) {
3500 3498 mutex_enter(&irport->irport_mutex);
3501 3499 irport->irport_refcnt++;
3502 3500 mutex_exit(&irport->irport_mutex);
3503 3501 }
3504 3502
3505 3503 return (irport);
3506 3504 }
3507 3505
3508 3506 static void
3509 3507 stmf_irport_deregister(stmf_i_remote_port_t *irport)
3510 3508 {
3511 3509 /*
3512 3510 * If we were actually going to remove unreferenced remote ports
3513 3511 * we would want to acquire stmf_state.stmf_lock before getting
3514 3512 * the irport mutex.
3515 3513 *
3516 3514 * Instead we're just going to leave it there even if unreferenced.
3517 3515 */
3518 3516 mutex_enter(&irport->irport_mutex);
3519 3517 irport->irport_refcnt--;
3520 3518 mutex_exit(&irport->irport_mutex);
3521 3519 }
3522 3520
3523 3521 /*
3524 3522 * Port provider has to make sure that register/deregister session and
3525 3523 * port are serialized calls.
3526 3524 */
3527 3525 stmf_status_t
3528 3526 stmf_register_scsi_session(stmf_local_port_t *lport, stmf_scsi_session_t *ss)
3529 3527 {
3530 3528 stmf_i_scsi_session_t *iss;
3531 3529 stmf_i_local_port_t *ilport = (stmf_i_local_port_t *)
3532 3530 lport->lport_stmf_private;
3533 3531 uint8_t lun[8];
3534 3532
3535 3533 /*
3536 3534 * Port state has to be online to register a scsi session. It is
3537 3535 * possible that we started an offline operation and a new SCSI
3538 3536 * session started at the same time (in that case also we are going
3539 3537 * to fail the registeration). But any other state is simply
3540 3538 * a bad port provider implementation.
3541 3539 */
3542 3540 if (ilport->ilport_state != STMF_STATE_ONLINE) {
3543 3541 if (ilport->ilport_state != STMF_STATE_OFFLINING) {
3544 3542 stmf_trace(lport->lport_alias, "Port is trying to "
3545 3543 "register a session while the state is neither "
3546 3544 "online nor offlining");
3547 3545 }
3548 3546 return (STMF_FAILURE);
3549 3547 }
3550 3548 bzero(lun, 8);
3551 3549 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private;
3552 3550 if ((iss->iss_irport = stmf_irport_register(ss->ss_rport_id)) == NULL) {
3553 3551 stmf_trace(lport->lport_alias, "Could not register "
3554 3552 "remote port during session registration");
3555 3553 return (STMF_FAILURE);
3556 3554 }
3557 3555
3558 3556 iss->iss_flags |= ISS_BEING_CREATED;
3559 3557
3560 3558 if (ss->ss_rport == NULL) {
3561 3559 iss->iss_flags |= ISS_NULL_TPTID;
3562 3560 ss->ss_rport = stmf_scsilib_devid_to_remote_port(
3563 3561 ss->ss_rport_id);
3564 3562 if (ss->ss_rport == NULL) {
3565 3563 iss->iss_flags &= ~(ISS_NULL_TPTID | ISS_BEING_CREATED);
3566 3564 stmf_trace(lport->lport_alias, "Device id to "
3567 3565 "remote port conversion failed");
3568 3566 return (STMF_FAILURE);
3569 3567 }
3570 3568 } else {
3571 3569 if (!stmf_scsilib_tptid_validate(ss->ss_rport->rport_tptid,
3572 3570 ss->ss_rport->rport_tptid_sz, NULL)) {
3573 3571 iss->iss_flags &= ~ISS_BEING_CREATED;
3574 3572 stmf_trace(lport->lport_alias, "Remote port "
3575 3573 "transport id validation failed");
3576 3574 return (STMF_FAILURE);
3577 3575 }
3578 3576 }
3579 3577
3580 3578 /* sessions use the ilport_lock. No separate lock is required */
3581 3579 iss->iss_lockp = &ilport->ilport_lock;
3582 3580
3583 3581 if (iss->iss_sm != NULL)
3584 3582 cmn_err(CE_PANIC, "create lun map called with non NULL map");
3585 3583 iss->iss_sm = (stmf_lun_map_t *)kmem_zalloc(sizeof (stmf_lun_map_t),
3586 3584 KM_SLEEP);
3587 3585
3588 3586 mutex_enter(&stmf_state.stmf_lock);
3589 3587 rw_enter(&ilport->ilport_lock, RW_WRITER);
3590 3588 (void) stmf_session_create_lun_map(ilport, iss);
3591 3589 ilport->ilport_nsessions++;
3592 3590 iss->iss_next = ilport->ilport_ss_list;
3593 3591 ilport->ilport_ss_list = iss;
3594 3592 rw_exit(&ilport->ilport_lock);
3595 3593 mutex_exit(&stmf_state.stmf_lock);
3596 3594
3597 3595 iss->iss_creation_time = ddi_get_time();
3598 3596 ss->ss_session_id = atomic_inc_64_nv(&stmf_session_counter);
3599 3597 iss->iss_flags &= ~ISS_BEING_CREATED;
3600 3598 /* XXX should we remove ISS_LUN_INVENTORY_CHANGED on new session? */
3601 3599 iss->iss_flags &= ~ISS_LUN_INVENTORY_CHANGED;
3602 3600 DTRACE_PROBE2(session__online, stmf_local_port_t *, lport,
3603 3601 stmf_scsi_session_t *, ss);
3604 3602 return (STMF_SUCCESS);
3605 3603 }
3606 3604
3607 3605 void
3608 3606 stmf_deregister_scsi_session(stmf_local_port_t *lport, stmf_scsi_session_t *ss)
3609 3607 {
3610 3608 stmf_i_local_port_t *ilport = (stmf_i_local_port_t *)
3611 3609 lport->lport_stmf_private;
3612 3610 stmf_i_scsi_session_t *iss, **ppss;
3613 3611 int found = 0;
3614 3612 stmf_ic_msg_t *ic_session_dereg;
3615 3613 stmf_status_t ic_ret = STMF_FAILURE;
3616 3614
3617 3615 DTRACE_PROBE2(session__offline, stmf_local_port_t *, lport,
3618 3616 stmf_scsi_session_t *, ss);
3619 3617
3620 3618 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private;
3621 3619 if (ss->ss_rport_alias) {
3622 3620 ss->ss_rport_alias = NULL;
3623 3621 }
3624 3622
3625 3623 try_dereg_ss_again:
3626 3624 mutex_enter(&stmf_state.stmf_lock);
3627 3625 atomic_and_32(&iss->iss_flags,
3628 3626 ~(ISS_LUN_INVENTORY_CHANGED | ISS_GOT_INITIAL_LUNS));
3629 3627 if (iss->iss_flags & ISS_EVENT_ACTIVE) {
3630 3628 mutex_exit(&stmf_state.stmf_lock);
3631 3629 delay(1);
3632 3630 goto try_dereg_ss_again;
3633 3631 }
3634 3632
3635 3633 /* dereg proxy session if not standby port */
3636 3634 if (stmf_state.stmf_alua_state == 1 &&
3637 3635 ilport->ilport_standby == 0 &&
3638 3636 ilport->ilport_alua == 1) {
3639 3637 ic_session_dereg = ic_session_dereg_msg_alloc(
3640 3638 ss, stmf_proxy_msg_id);
3641 3639 if (ic_session_dereg) {
3642 3640 ic_ret = ic_tx_msg(ic_session_dereg);
3643 3641 if (ic_ret == STMF_IC_MSG_SUCCESS) {
3644 3642 stmf_proxy_msg_id++;
3645 3643 }
3646 3644 }
3647 3645 }
3648 3646
3649 3647 rw_enter(&ilport->ilport_lock, RW_WRITER);
3650 3648 for (ppss = &ilport->ilport_ss_list; *ppss != NULL;
3651 3649 ppss = &((*ppss)->iss_next)) {
3652 3650 if (iss == (*ppss)) {
3653 3651 *ppss = (*ppss)->iss_next;
3654 3652 found = 1;
3655 3653 break;
3656 3654 }
3657 3655 }
3658 3656 if (!found) {
3659 3657 cmn_err(CE_PANIC, "Deregister session called for non existent"
3660 3658 " session");
3661 3659 }
3662 3660 ilport->ilport_nsessions--;
3663 3661
3664 3662 stmf_irport_deregister(iss->iss_irport);
3665 3663 (void) stmf_session_destroy_lun_map(ilport, iss);
3666 3664 rw_exit(&ilport->ilport_lock);
3667 3665 mutex_exit(&stmf_state.stmf_lock);
3668 3666
3669 3667 if (iss->iss_flags & ISS_NULL_TPTID) {
3670 3668 stmf_remote_port_free(ss->ss_rport);
3671 3669 }
3672 3670 }
3673 3671
3674 3672 stmf_i_scsi_session_t *
3675 3673 stmf_session_id_to_issptr(uint64_t session_id, int stay_locked)
3676 3674 {
3677 3675 stmf_i_local_port_t *ilport;
3678 3676 stmf_i_scsi_session_t *iss;
3679 3677
3680 3678 mutex_enter(&stmf_state.stmf_lock);
3681 3679 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL;
3682 3680 ilport = ilport->ilport_next) {
3683 3681 rw_enter(&ilport->ilport_lock, RW_WRITER);
3684 3682 for (iss = ilport->ilport_ss_list; iss != NULL;
3685 3683 iss = iss->iss_next) {
3686 3684 if (iss->iss_ss->ss_session_id == session_id) {
3687 3685 if (!stay_locked)
3688 3686 rw_exit(&ilport->ilport_lock);
3689 3687 mutex_exit(&stmf_state.stmf_lock);
3690 3688 return (iss);
3691 3689 }
3692 3690 }
3693 3691 rw_exit(&ilport->ilport_lock);
3694 3692 }
3695 3693 mutex_exit(&stmf_state.stmf_lock);
3696 3694 return (NULL);
3697 3695 }
3698 3696
3699 3697 void
3700 3698 stmf_release_itl_handle(stmf_lu_t *lu, stmf_itl_data_t *itl)
3701 3699 {
3702 3700 stmf_itl_data_t **itlpp;
3703 3701 stmf_i_lu_t *ilu;
3704 3702
3705 3703 ASSERT(itl->itl_flags & STMF_ITL_BEING_TERMINATED);
3706 3704
3707 3705 ilu = (stmf_i_lu_t *)lu->lu_stmf_private;
3708 3706 mutex_enter(&ilu->ilu_task_lock);
3709 3707 for (itlpp = &ilu->ilu_itl_list; (*itlpp) != NULL;
3710 3708 itlpp = &(*itlpp)->itl_next) {
3711 3709 if ((*itlpp) == itl)
3712 3710 break;
3713 3711 }
3714 3712 ASSERT((*itlpp) != NULL);
3715 3713 *itlpp = itl->itl_next;
3716 3714 mutex_exit(&ilu->ilu_task_lock);
3717 3715 lu->lu_abort(lu, STMF_LU_ITL_HANDLE_REMOVED, itl->itl_handle,
3718 3716 (uint32_t)itl->itl_hdlrm_reason);
3719 3717
3720 3718 kmem_free(itl, sizeof (*itl));
3721 3719 }
3722 3720
3723 3721 stmf_status_t
3724 3722 stmf_register_itl_handle(stmf_lu_t *lu, uint8_t *lun,
3725 3723 stmf_scsi_session_t *ss, uint64_t session_id, void *itl_handle)
3726 3724 {
3727 3725 stmf_itl_data_t *itl;
3728 3726 stmf_i_scsi_session_t *iss;
3729 3727 stmf_lun_map_ent_t *lun_map_ent;
3730 3728 stmf_i_lu_t *ilu;
3731 3729 uint16_t n;
3732 3730
3733 3731 ilu = (stmf_i_lu_t *)lu->lu_stmf_private;
3734 3732 if (ss == NULL) {
3735 3733 iss = stmf_session_id_to_issptr(session_id, 1);
3736 3734 if (iss == NULL)
3737 3735 return (STMF_NOT_FOUND);
3738 3736 } else {
3739 3737 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private;
3740 3738 }
3741 3739
3742 3740 mutex_enter(&stmf_state.stmf_lock);
3743 3741 rw_enter(iss->iss_lockp, RW_WRITER);
3744 3742 n = ((uint16_t)lun[1] | (((uint16_t)(lun[0] & 0x3F)) << 8));
3745 3743 lun_map_ent = (stmf_lun_map_ent_t *)
3746 3744 stmf_get_ent_from_map(iss->iss_sm, n);
3747 3745 if ((lun_map_ent == NULL) || (lun_map_ent->ent_lu != lu)) {
3748 3746 rw_exit(iss->iss_lockp);
3749 3747 mutex_exit(&stmf_state.stmf_lock);
3750 3748 return (STMF_NOT_FOUND);
3751 3749 }
3752 3750 if (lun_map_ent->ent_itl_datap != NULL) {
3753 3751 rw_exit(iss->iss_lockp);
3754 3752 mutex_exit(&stmf_state.stmf_lock);
3755 3753 return (STMF_ALREADY);
3756 3754 }
3757 3755
3758 3756 itl = (stmf_itl_data_t *)kmem_zalloc(sizeof (*itl), KM_NOSLEEP);
3759 3757 if (itl == NULL) {
3760 3758 rw_exit(iss->iss_lockp);
3761 3759 mutex_exit(&stmf_state.stmf_lock);
3762 3760 return (STMF_ALLOC_FAILURE);
3763 3761 }
3764 3762
3765 3763 itl->itl_ilu = ilu;
3766 3764 itl->itl_session = iss;
3767 3765 itl->itl_counter = 1;
3768 3766 itl->itl_lun = n;
3769 3767 itl->itl_handle = itl_handle;
3770 3768
3771 3769 mutex_enter(&ilu->ilu_task_lock);
3772 3770 itl->itl_next = ilu->ilu_itl_list;
3773 3771 ilu->ilu_itl_list = itl;
3774 3772 mutex_exit(&ilu->ilu_task_lock);
3775 3773 lun_map_ent->ent_itl_datap = itl;
3776 3774 rw_exit(iss->iss_lockp);
3777 3775 mutex_exit(&stmf_state.stmf_lock);
3778 3776
3779 3777 return (STMF_SUCCESS);
3780 3778 }
3781 3779
3782 3780 void
3783 3781 stmf_do_itl_dereg(stmf_lu_t *lu, stmf_itl_data_t *itl, uint8_t hdlrm_reason)
3784 3782 {
3785 3783 uint8_t old, new;
3786 3784
3787 3785 do {
3788 3786 old = new = itl->itl_flags;
3789 3787 if (old & STMF_ITL_BEING_TERMINATED)
3790 3788 return;
3791 3789 new |= STMF_ITL_BEING_TERMINATED;
3792 3790 } while (atomic_cas_8(&itl->itl_flags, old, new) != old);
3793 3791 itl->itl_hdlrm_reason = hdlrm_reason;
3794 3792
3795 3793 ASSERT(itl->itl_counter);
3796 3794
3797 3795 if (atomic_dec_32_nv(&itl->itl_counter))
3798 3796 return;
3799 3797
3800 3798 stmf_release_itl_handle(lu, itl);
3801 3799 }
3802 3800
3803 3801 stmf_status_t
3804 3802 stmf_deregister_all_lu_itl_handles(stmf_lu_t *lu)
3805 3803 {
3806 3804 stmf_i_lu_t *ilu;
3807 3805 stmf_i_local_port_t *ilport;
3808 3806 stmf_i_scsi_session_t *iss;
3809 3807 stmf_lun_map_t *lm;
3810 3808 stmf_lun_map_ent_t *ent;
3811 3809 uint32_t nmaps, nu;
3812 3810 stmf_itl_data_t **itl_list;
3813 3811 int i;
3814 3812
3815 3813 ilu = (stmf_i_lu_t *)lu->lu_stmf_private;
3816 3814
3817 3815 dereg_itl_start:;
3818 3816 nmaps = ilu->ilu_ref_cnt;
3819 3817 if (nmaps == 0)
3820 3818 return (STMF_NOT_FOUND);
3821 3819 itl_list = (stmf_itl_data_t **)kmem_zalloc(
3822 3820 nmaps * sizeof (stmf_itl_data_t *), KM_SLEEP);
3823 3821 mutex_enter(&stmf_state.stmf_lock);
3824 3822 if (nmaps != ilu->ilu_ref_cnt) {
3825 3823 /* Something changed, start all over */
3826 3824 mutex_exit(&stmf_state.stmf_lock);
3827 3825 kmem_free(itl_list, nmaps * sizeof (stmf_itl_data_t *));
3828 3826 goto dereg_itl_start;
3829 3827 }
3830 3828 nu = 0;
3831 3829 for (ilport = stmf_state.stmf_ilportlist; ilport != NULL;
3832 3830 ilport = ilport->ilport_next) {
3833 3831 rw_enter(&ilport->ilport_lock, RW_WRITER);
3834 3832 for (iss = ilport->ilport_ss_list; iss != NULL;
3835 3833 iss = iss->iss_next) {
3836 3834 lm = iss->iss_sm;
3837 3835 if (!lm)
3838 3836 continue;
3839 3837 for (i = 0; i < lm->lm_nentries; i++) {
3840 3838 if (lm->lm_plus[i] == NULL)
3841 3839 continue;
3842 3840 ent = (stmf_lun_map_ent_t *)lm->lm_plus[i];
3843 3841 if ((ent->ent_lu == lu) &&
3844 3842 (ent->ent_itl_datap)) {
3845 3843 itl_list[nu++] = ent->ent_itl_datap;
3846 3844 ent->ent_itl_datap = NULL;
3847 3845 if (nu == nmaps) {
3848 3846 rw_exit(&ilport->ilport_lock);
3849 3847 goto dai_scan_done;
3850 3848 }
3851 3849 }
3852 3850 } /* lun table for a session */
3853 3851 } /* sessions */
3854 3852 rw_exit(&ilport->ilport_lock);
3855 3853 } /* ports */
3856 3854
3857 3855 dai_scan_done:
3858 3856 mutex_exit(&stmf_state.stmf_lock);
3859 3857
3860 3858 for (i = 0; i < nu; i++) {
3861 3859 stmf_do_itl_dereg(lu, itl_list[i],
3862 3860 STMF_ITL_REASON_DEREG_REQUEST);
3863 3861 }
3864 3862 kmem_free(itl_list, nmaps * sizeof (stmf_itl_data_t *));
3865 3863
3866 3864 return (STMF_SUCCESS);
3867 3865 }
3868 3866
3869 3867 stmf_status_t
3870 3868 stmf_get_itl_handle(stmf_lu_t *lu, uint8_t *lun, stmf_scsi_session_t *ss,
3871 3869 uint64_t session_id, void **itl_handle_retp)
3872 3870 {
3873 3871 stmf_i_scsi_session_t *iss;
3874 3872 stmf_lun_map_ent_t *ent;
3875 3873 stmf_lun_map_t *lm;
3876 3874 stmf_status_t ret;
3877 3875 int i;
3878 3876 uint16_t n;
3879 3877
3880 3878 if (ss == NULL) {
3881 3879 iss = stmf_session_id_to_issptr(session_id, 1);
3882 3880 if (iss == NULL)
3883 3881 return (STMF_NOT_FOUND);
3884 3882 } else {
3885 3883 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private;
3886 3884 rw_enter(iss->iss_lockp, RW_WRITER);
3887 3885 }
3888 3886
3889 3887 ent = NULL;
3890 3888 if (lun == NULL) {
3891 3889 lm = iss->iss_sm;
3892 3890 for (i = 0; i < lm->lm_nentries; i++) {
3893 3891 if (lm->lm_plus[i] == NULL)
3894 3892 continue;
3895 3893 ent = (stmf_lun_map_ent_t *)lm->lm_plus[i];
3896 3894 if (ent->ent_lu == lu)
3897 3895 break;
3898 3896 }
3899 3897 } else {
3900 3898 n = ((uint16_t)lun[1] | (((uint16_t)(lun[0] & 0x3F)) << 8));
3901 3899 ent = (stmf_lun_map_ent_t *)
3902 3900 stmf_get_ent_from_map(iss->iss_sm, n);
3903 3901 if (lu && (ent->ent_lu != lu))
3904 3902 ent = NULL;
3905 3903 }
3906 3904 if (ent && ent->ent_itl_datap) {
3907 3905 *itl_handle_retp = ent->ent_itl_datap->itl_handle;
3908 3906 ret = STMF_SUCCESS;
3909 3907 } else {
3910 3908 ret = STMF_NOT_FOUND;
3911 3909 }
3912 3910
3913 3911 rw_exit(iss->iss_lockp);
3914 3912 return (ret);
3915 3913 }
3916 3914
3917 3915 stmf_data_buf_t *
3918 3916 stmf_alloc_dbuf(scsi_task_t *task, uint32_t size, uint32_t *pminsize,
3919 3917 uint32_t flags)
3920 3918 {
3921 3919 stmf_i_scsi_task_t *itask =
3922 3920 (stmf_i_scsi_task_t *)task->task_stmf_private;
3923 3921 stmf_local_port_t *lport = task->task_lport;
3924 3922 stmf_data_buf_t *dbuf;
3925 3923 uint8_t ndx;
3926 3924
3927 3925 ndx = stmf_first_zero[itask->itask_allocated_buf_map];
3928 3926 if (ndx == 0xff)
3929 3927 return (NULL);
3930 3928 dbuf = itask->itask_dbufs[ndx] = lport->lport_ds->ds_alloc_data_buf(
3931 3929 task, size, pminsize, flags);
3932 3930 if (dbuf) {
3933 3931 task->task_cur_nbufs++;
3934 3932 itask->itask_allocated_buf_map |= (1 << ndx);
3935 3933 dbuf->db_flags &= ~DB_LPORT_XFER_ACTIVE;
3936 3934 dbuf->db_handle = ndx;
3937 3935 return (dbuf);
3938 3936 }
3939 3937
3940 3938 return (NULL);
3941 3939 }
3942 3940
3943 3941 stmf_status_t
3944 3942 stmf_setup_dbuf(scsi_task_t *task, stmf_data_buf_t *dbuf, uint32_t flags)
3945 3943 {
3946 3944 stmf_i_scsi_task_t *itask =
3947 3945 (stmf_i_scsi_task_t *)task->task_stmf_private;
3948 3946 stmf_local_port_t *lport = task->task_lport;
3949 3947 uint8_t ndx;
3950 3948 stmf_status_t ret;
3951 3949
3952 3950 ASSERT(task->task_additional_flags & TASK_AF_ACCEPT_LU_DBUF);
3953 3951 ASSERT(lport->lport_ds->ds_setup_dbuf != NULL);
3954 3952 ASSERT(dbuf->db_flags & DB_LU_DATA_BUF);
3955 3953
3956 3954 if ((task->task_additional_flags & TASK_AF_ACCEPT_LU_DBUF) == 0)
3957 3955 return (STMF_FAILURE);
3958 3956 if (lport->lport_ds->ds_setup_dbuf == NULL)
3959 3957 return (STMF_FAILURE);
3960 3958
3961 3959 ndx = stmf_first_zero[itask->itask_allocated_buf_map];
3962 3960 if (ndx == 0xff)
3963 3961 return (STMF_FAILURE);
3964 3962 ret = lport->lport_ds->ds_setup_dbuf(task, dbuf, flags);
3965 3963 if (ret == STMF_FAILURE)
3966 3964 return (STMF_FAILURE);
3967 3965 itask->itask_dbufs[ndx] = dbuf;
3968 3966 task->task_cur_nbufs++;
3969 3967 itask->itask_allocated_buf_map |= (1 << ndx);
3970 3968 dbuf->db_handle = ndx;
3971 3969
3972 3970 return (STMF_SUCCESS);
3973 3971 }
3974 3972
3975 3973 void
3976 3974 stmf_teardown_dbuf(scsi_task_t *task, stmf_data_buf_t *dbuf)
3977 3975 {
3978 3976 stmf_i_scsi_task_t *itask =
3979 3977 (stmf_i_scsi_task_t *)task->task_stmf_private;
3980 3978 stmf_local_port_t *lport = task->task_lport;
3981 3979
3982 3980 ASSERT(task->task_additional_flags & TASK_AF_ACCEPT_LU_DBUF);
3983 3981 ASSERT(lport->lport_ds->ds_teardown_dbuf != NULL);
3984 3982 ASSERT(dbuf->db_flags & DB_LU_DATA_BUF);
3985 3983
3986 3984 itask->itask_allocated_buf_map &= ~(1 << dbuf->db_handle);
3987 3985 task->task_cur_nbufs--;
3988 3986 lport->lport_ds->ds_teardown_dbuf(lport->lport_ds, dbuf);
3989 3987 }
3990 3988
3991 3989 void
3992 3990 stmf_free_dbuf(scsi_task_t *task, stmf_data_buf_t *dbuf)
3993 3991 {
3994 3992 stmf_i_scsi_task_t *itask =
3995 3993 (stmf_i_scsi_task_t *)task->task_stmf_private;
3996 3994 stmf_local_port_t *lport = task->task_lport;
3997 3995
3998 3996 itask->itask_allocated_buf_map &= ~(1 << dbuf->db_handle);
3999 3997 task->task_cur_nbufs--;
4000 3998 lport->lport_ds->ds_free_data_buf(lport->lport_ds, dbuf);
4001 3999 }
4002 4000
4003 4001 stmf_data_buf_t *
4004 4002 stmf_handle_to_buf(scsi_task_t *task, uint8_t h)
4005 4003 {
4006 4004 stmf_i_scsi_task_t *itask;
4007 4005
4008 4006 itask = (stmf_i_scsi_task_t *)task->task_stmf_private;
4009 4007 if (h > 3)
4010 4008 return (NULL);
4011 4009 return (itask->itask_dbufs[h]);
4012 4010 }
4013 4011
4014 4012 /* ARGSUSED */
4015 4013 struct scsi_task *
4016 4014 stmf_task_alloc(struct stmf_local_port *lport, stmf_scsi_session_t *ss,
4017 4015 uint8_t *lun, uint16_t cdb_length_in, uint16_t ext_id)
4018 4016 {
4019 4017 stmf_lu_t *lu;
4020 4018 stmf_i_scsi_session_t *iss;
4021 4019 stmf_i_lu_t *ilu;
4022 4020 stmf_i_scsi_task_t *itask;
4023 4021 stmf_i_scsi_task_t **ppitask;
4024 4022 scsi_task_t *task;
4025 4023 uint8_t *l;
4026 4024 stmf_lun_map_ent_t *lun_map_ent;
4027 4025 uint16_t cdb_length;
4028 4026 uint16_t luNbr;
4029 4027 uint8_t new_task = 0;
4030 4028
4031 4029 /*
4032 4030 * We allocate 7 extra bytes for CDB to provide a cdb pointer which
4033 4031 * is guaranteed to be 8 byte aligned. Some LU providers like OSD
4034 4032 * depend upon this alignment.
4035 4033 */
4036 4034 if (cdb_length_in >= 16)
4037 4035 cdb_length = cdb_length_in + 7;
4038 4036 else
4039 4037 cdb_length = 16 + 7;
4040 4038 iss = (stmf_i_scsi_session_t *)ss->ss_stmf_private;
4041 4039 luNbr = ((uint16_t)lun[1] | (((uint16_t)(lun[0] & 0x3F)) << 8));
4042 4040 rw_enter(iss->iss_lockp, RW_READER);
4043 4041 lun_map_ent =
4044 4042 (stmf_lun_map_ent_t *)stmf_get_ent_from_map(iss->iss_sm, luNbr);
4045 4043 if (!lun_map_ent) {
4046 4044 lu = dlun0;
4047 4045 } else {
4048 4046 lu = lun_map_ent->ent_lu;
4049 4047 }
4050 4048 ilu = lu->lu_stmf_private;
4051 4049 if (ilu->ilu_flags & ILU_RESET_ACTIVE) {
4052 4050 rw_exit(iss->iss_lockp);
4053 4051 return (NULL);
4054 4052 }
4055 4053 ASSERT(lu == dlun0 || (ilu->ilu_state != STMF_STATE_OFFLINING &&
4056 4054 ilu->ilu_state != STMF_STATE_OFFLINE));
4057 4055 do {
4058 4056 if (ilu->ilu_free_tasks == NULL) {
4059 4057 new_task = 1;
4060 4058 break;
4061 4059 }
4062 4060 mutex_enter(&ilu->ilu_task_lock);
4063 4061 for (ppitask = &ilu->ilu_free_tasks; (*ppitask != NULL) &&
4064 4062 ((*ppitask)->itask_cdb_buf_size < cdb_length);
4065 4063 ppitask = &((*ppitask)->itask_lu_free_next))
4066 4064 ;
4067 4065 if (*ppitask) {
4068 4066 itask = *ppitask;
4069 4067 *ppitask = (*ppitask)->itask_lu_free_next;
4070 4068 ilu->ilu_ntasks_free--;
4071 4069 if (ilu->ilu_ntasks_free < ilu->ilu_ntasks_min_free)
4072 4070 ilu->ilu_ntasks_min_free = ilu->ilu_ntasks_free;
4073 4071 } else {
4074 4072 new_task = 1;
4075 4073 }
4076 4074 mutex_exit(&ilu->ilu_task_lock);
4077 4075 /* CONSTCOND */
4078 4076 } while (0);
4079 4077
4080 4078 if (!new_task) {
4081 4079 /*
4082 4080 * Save the task_cdb pointer and zero per cmd fields.
4083 4081 * We know the task_cdb_length is large enough by task
4084 4082 * selection process above.
4085 4083 */
4086 4084 uint8_t *save_cdb;
4087 4085 uintptr_t t_start, t_end;
4088 4086
4089 4087 task = itask->itask_task;
4090 4088 save_cdb = task->task_cdb; /* save */
4091 4089 t_start = (uintptr_t)&task->task_flags;
4092 4090 t_end = (uintptr_t)&task->task_extended_cmd;
4093 4091 bzero((void *)t_start, (size_t)(t_end - t_start));
4094 4092 task->task_cdb = save_cdb; /* restore */
4095 4093 itask->itask_ncmds = 0;
4096 4094 } else {
4097 4095 task = (scsi_task_t *)stmf_alloc(STMF_STRUCT_SCSI_TASK,
4098 4096 cdb_length, AF_FORCE_NOSLEEP);
4099 4097 if (task == NULL) {
4100 4098 rw_exit(iss->iss_lockp);
4101 4099 return (NULL);
4102 4100 }
4103 4101 task->task_lu = lu;
4104 4102 l = task->task_lun_no;
4105 4103 l[0] = lun[0];
4106 4104 l[1] = lun[1];
4107 4105 l[2] = lun[2];
4108 4106 l[3] = lun[3];
4109 4107 l[4] = lun[4];
4110 4108 l[5] = lun[5];
4111 4109 l[6] = lun[6];
4112 4110 l[7] = lun[7];
4113 4111 task->task_cdb = (uint8_t *)task->task_port_private;
4114 4112 if ((ulong_t)(task->task_cdb) & 7ul) {
4115 4113 task->task_cdb = (uint8_t *)(((ulong_t)
4116 4114 (task->task_cdb) + 7ul) & ~(7ul));
4117 4115 }
4118 4116 itask = (stmf_i_scsi_task_t *)task->task_stmf_private;
4119 4117 itask->itask_cdb_buf_size = cdb_length;
4120 4118 mutex_init(&itask->itask_audit_mutex, NULL, MUTEX_DRIVER, NULL);
4121 4119 }
4122 4120 task->task_session = ss;
4123 4121 task->task_lport = lport;
4124 4122 task->task_cdb_length = cdb_length_in;
4125 4123 itask->itask_flags = ITASK_IN_TRANSITION;
4126 4124 itask->itask_waitq_time = 0;
4127 4125 itask->itask_lu_read_time = itask->itask_lu_write_time = 0;
4128 4126 itask->itask_lport_read_time = itask->itask_lport_write_time = 0;
4129 4127 itask->itask_read_xfer = itask->itask_write_xfer = 0;
4130 4128 itask->itask_audit_index = 0;
4131 4129
4132 4130 if (new_task) {
4133 4131 if (lu->lu_task_alloc(task) != STMF_SUCCESS) {
4134 4132 rw_exit(iss->iss_lockp);
4135 4133 stmf_free(task);
4136 4134 return (NULL);
4137 4135 }
4138 4136 mutex_enter(&ilu->ilu_task_lock);
4139 4137 if (ilu->ilu_flags & ILU_RESET_ACTIVE) {
4140 4138 mutex_exit(&ilu->ilu_task_lock);
4141 4139 rw_exit(iss->iss_lockp);
4142 4140 stmf_free(task);
4143 4141 return (NULL);
4144 4142 }
4145 4143 itask->itask_lu_next = ilu->ilu_tasks;
4146 4144 if (ilu->ilu_tasks)
4147 4145 ilu->ilu_tasks->itask_lu_prev = itask;
4148 4146 ilu->ilu_tasks = itask;
4149 4147 /* kmem_zalloc automatically makes itask->itask_lu_prev NULL */
4150 4148 ilu->ilu_ntasks++;
4151 4149 mutex_exit(&ilu->ilu_task_lock);
4152 4150 }
4153 4151
4154 4152 itask->itask_ilu_task_cntr = ilu->ilu_cur_task_cntr;
4155 4153 atomic_inc_32(itask->itask_ilu_task_cntr);
4156 4154 itask->itask_start_time = ddi_get_lbolt();
4157 4155
4158 4156 if ((lun_map_ent != NULL) && ((itask->itask_itl_datap =
4159 4157 lun_map_ent->ent_itl_datap) != NULL)) {
4160 4158 atomic_inc_32(&itask->itask_itl_datap->itl_counter);
4161 4159 task->task_lu_itl_handle = itask->itask_itl_datap->itl_handle;
4162 4160 } else {
4163 4161 itask->itask_itl_datap = NULL;
4164 4162 task->task_lu_itl_handle = NULL;
4165 4163 }
4166 4164
4167 4165 rw_exit(iss->iss_lockp);
4168 4166 return (task);
4169 4167 }
4170 4168
4171 4169 static void
4172 4170 stmf_task_lu_free(scsi_task_t *task, stmf_i_scsi_session_t *iss)
4173 4171 {
4174 4172 stmf_i_scsi_task_t *itask =
4175 4173 (stmf_i_scsi_task_t *)task->task_stmf_private;
4176 4174 stmf_i_lu_t *ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private;
4177 4175
4178 4176 ASSERT(rw_lock_held(iss->iss_lockp));
4179 4177 itask->itask_flags = ITASK_IN_FREE_LIST;
4180 4178 itask->itask_proxy_msg_id = 0;
4181 4179 mutex_enter(&ilu->ilu_task_lock);
4182 4180 itask->itask_lu_free_next = ilu->ilu_free_tasks;
4183 4181 ilu->ilu_free_tasks = itask;
4184 4182 ilu->ilu_ntasks_free++;
4185 4183 if (ilu->ilu_ntasks == ilu->ilu_ntasks_free)
4186 4184 cv_signal(&ilu->ilu_offline_pending_cv);
4187 4185 mutex_exit(&ilu->ilu_task_lock);
4188 4186 atomic_dec_32(itask->itask_ilu_task_cntr);
4189 4187 }
4190 4188
4191 4189 void
4192 4190 stmf_task_lu_check_freelist(stmf_i_lu_t *ilu)
4193 4191 {
4194 4192 uint32_t num_to_release, ndx;
4195 4193 stmf_i_scsi_task_t *itask;
4196 4194 stmf_lu_t *lu = ilu->ilu_lu;
4197 4195
4198 4196 ASSERT(ilu->ilu_ntasks_min_free <= ilu->ilu_ntasks_free);
4199 4197
4200 4198 /* free half of the minimal free of the free tasks */
4201 4199 num_to_release = (ilu->ilu_ntasks_min_free + 1) / 2;
4202 4200 if (!num_to_release) {
4203 4201 return;
4204 4202 }
4205 4203 for (ndx = 0; ndx < num_to_release; ndx++) {
4206 4204 mutex_enter(&ilu->ilu_task_lock);
4207 4205 itask = ilu->ilu_free_tasks;
4208 4206 if (itask == NULL) {
4209 4207 mutex_exit(&ilu->ilu_task_lock);
4210 4208 break;
4211 4209 }
4212 4210 ilu->ilu_free_tasks = itask->itask_lu_free_next;
4213 4211 ilu->ilu_ntasks_free--;
4214 4212 mutex_exit(&ilu->ilu_task_lock);
4215 4213
4216 4214 lu->lu_task_free(itask->itask_task);
4217 4215 mutex_enter(&ilu->ilu_task_lock);
4218 4216 if (itask->itask_lu_next)
4219 4217 itask->itask_lu_next->itask_lu_prev =
4220 4218 itask->itask_lu_prev;
4221 4219 if (itask->itask_lu_prev)
4222 4220 itask->itask_lu_prev->itask_lu_next =
4223 4221 itask->itask_lu_next;
4224 4222 else
4225 4223 ilu->ilu_tasks = itask->itask_lu_next;
4226 4224
4227 4225 ilu->ilu_ntasks--;
4228 4226 mutex_exit(&ilu->ilu_task_lock);
4229 4227 stmf_free(itask->itask_task);
4230 4228 }
4231 4229 }
4232 4230
4233 4231 /*
4234 4232 * Called with stmf_lock held
4235 4233 */
4236 4234 void
4237 4235 stmf_check_freetask()
4238 4236 {
4239 4237 stmf_i_lu_t *ilu;
4240 4238 clock_t endtime = ddi_get_lbolt() + drv_usectohz(10000);
4241 4239
4242 4240 /* stmf_svc_ilu_draining may get changed after stmf_lock is released */
4243 4241 while ((ilu = stmf_state.stmf_svc_ilu_draining) != NULL) {
4244 4242 stmf_state.stmf_svc_ilu_draining = ilu->ilu_next;
4245 4243 if (!ilu->ilu_ntasks_min_free) {
4246 4244 ilu->ilu_ntasks_min_free = ilu->ilu_ntasks_free;
4247 4245 continue;
4248 4246 }
4249 4247 ilu->ilu_flags |= ILU_STALL_DEREGISTER;
4250 4248 mutex_exit(&stmf_state.stmf_lock);
4251 4249 stmf_task_lu_check_freelist(ilu);
4252 4250 /*
4253 4251 * we do not care about the accuracy of
4254 4252 * ilu_ntasks_min_free, so we don't lock here
4255 4253 */
4256 4254 ilu->ilu_ntasks_min_free = ilu->ilu_ntasks_free;
4257 4255 mutex_enter(&stmf_state.stmf_lock);
4258 4256 ilu->ilu_flags &= ~ILU_STALL_DEREGISTER;
4259 4257 cv_broadcast(&stmf_state.stmf_cv);
4260 4258 if (ddi_get_lbolt() >= endtime)
4261 4259 break;
4262 4260 }
4263 4261 }
4264 4262
4265 4263 void
4266 4264 stmf_do_ilu_timeouts(stmf_i_lu_t *ilu)
4267 4265 {
4268 4266 clock_t l = ddi_get_lbolt();
4269 4267 clock_t ps = drv_usectohz(1000000);
4270 4268 stmf_i_scsi_task_t *itask;
4271 4269 scsi_task_t *task;
4272 4270 uint32_t to;
4273 4271
4274 4272 mutex_enter(&ilu->ilu_task_lock);
4275 4273 for (itask = ilu->ilu_tasks; itask != NULL;
4276 4274 itask = itask->itask_lu_next) {
4277 4275 if (itask->itask_flags & (ITASK_IN_FREE_LIST |
4278 4276 ITASK_BEING_ABORTED)) {
4279 4277 continue;
4280 4278 }
4281 4279 task = itask->itask_task;
4282 4280 if (task->task_timeout == 0)
4283 4281 to = stmf_default_task_timeout;
4284 4282 else
4285 4283 to = task->task_timeout;
4286 4284 if ((itask->itask_start_time + (to * ps)) > l)
4287 4285 continue;
4288 4286 stmf_abort(STMF_QUEUE_TASK_ABORT, task,
4289 4287 STMF_TIMEOUT, NULL);
4290 4288 }
4291 4289 mutex_exit(&ilu->ilu_task_lock);
4292 4290 }
4293 4291
4294 4292 /*
4295 4293 * Called with stmf_lock held
4296 4294 */
4297 4295 void
4298 4296 stmf_check_ilu_timing()
4299 4297 {
4300 4298 stmf_i_lu_t *ilu;
4301 4299 clock_t endtime = ddi_get_lbolt() + drv_usectohz(10000);
4302 4300
4303 4301 /* stmf_svc_ilu_timing may get changed after stmf_lock is released */
4304 4302 while ((ilu = stmf_state.stmf_svc_ilu_timing) != NULL) {
4305 4303 stmf_state.stmf_svc_ilu_timing = ilu->ilu_next;
4306 4304 if (ilu->ilu_cur_task_cntr == (&ilu->ilu_task_cntr1)) {
4307 4305 if (ilu->ilu_task_cntr2 == 0) {
4308 4306 ilu->ilu_cur_task_cntr = &ilu->ilu_task_cntr2;
4309 4307 continue;
4310 4308 }
4311 4309 } else {
4312 4310 if (ilu->ilu_task_cntr1 == 0) {
4313 4311 ilu->ilu_cur_task_cntr = &ilu->ilu_task_cntr1;
4314 4312 continue;
4315 4313 }
4316 4314 }
4317 4315 /*
4318 4316 * If we are here then it means that there is some slowdown
4319 4317 * in tasks on this lu. We need to check.
4320 4318 */
4321 4319 ilu->ilu_flags |= ILU_STALL_DEREGISTER;
4322 4320 mutex_exit(&stmf_state.stmf_lock);
4323 4321 stmf_do_ilu_timeouts(ilu);
4324 4322 mutex_enter(&stmf_state.stmf_lock);
4325 4323 ilu->ilu_flags &= ~ILU_STALL_DEREGISTER;
4326 4324 cv_broadcast(&stmf_state.stmf_cv);
4327 4325 if (ddi_get_lbolt() >= endtime)
4328 4326 break;
4329 4327 }
4330 4328 }
4331 4329
4332 4330 /*
4333 4331 * Kills all tasks on a lu except tm_task
4334 4332 */
4335 4333 void
4336 4334 stmf_task_lu_killall(stmf_lu_t *lu, scsi_task_t *tm_task, stmf_status_t s)
4337 4335 {
4338 4336 stmf_i_lu_t *ilu = (stmf_i_lu_t *)lu->lu_stmf_private;
4339 4337 stmf_i_scsi_task_t *itask;
4340 4338
4341 4339 mutex_enter(&ilu->ilu_task_lock);
4342 4340
4343 4341 for (itask = ilu->ilu_tasks; itask != NULL;
4344 4342 itask = itask->itask_lu_next) {
4345 4343 if (itask->itask_flags & ITASK_IN_FREE_LIST)
4346 4344 continue;
4347 4345 if (itask->itask_task == tm_task)
4348 4346 continue;
4349 4347 stmf_abort(STMF_QUEUE_TASK_ABORT, itask->itask_task, s, NULL);
4350 4348 }
4351 4349 mutex_exit(&ilu->ilu_task_lock);
4352 4350 }
4353 4351
4354 4352 void
4355 4353 stmf_free_task_bufs(stmf_i_scsi_task_t *itask, stmf_local_port_t *lport)
4356 4354 {
4357 4355 int i;
4358 4356 uint8_t map;
4359 4357
4360 4358 if ((map = itask->itask_allocated_buf_map) == 0)
4361 4359 return;
4362 4360 for (i = 0; i < 4; i++) {
4363 4361 if (map & 1) {
4364 4362 stmf_data_buf_t *dbuf;
4365 4363
4366 4364 dbuf = itask->itask_dbufs[i];
4367 4365 if (dbuf->db_xfer_start_timestamp) {
4368 4366 stmf_lport_xfer_done(itask, dbuf);
4369 4367 }
4370 4368 if (dbuf->db_flags & DB_LU_DATA_BUF) {
4371 4369 /*
4372 4370 * LU needs to clean up buffer.
4373 4371 * LU is required to free the buffer
4374 4372 * in the xfer_done handler.
4375 4373 */
4376 4374 scsi_task_t *task = itask->itask_task;
4377 4375 stmf_lu_t *lu = task->task_lu;
4378 4376
4379 4377 lu->lu_dbuf_free(task, dbuf);
4380 4378 ASSERT(((itask->itask_allocated_buf_map>>i)
4381 4379 & 1) == 0); /* must be gone */
4382 4380 } else {
4383 4381 ASSERT(dbuf->db_lu_private == NULL);
4384 4382 dbuf->db_lu_private = NULL;
4385 4383 lport->lport_ds->ds_free_data_buf(
4386 4384 lport->lport_ds, dbuf);
4387 4385 }
4388 4386 }
4389 4387 map >>= 1;
4390 4388 }
4391 4389 itask->itask_allocated_buf_map = 0;
4392 4390 }
4393 4391
4394 4392 void
4395 4393 stmf_task_free(scsi_task_t *task)
4396 4394 {
4397 4395 stmf_local_port_t *lport = task->task_lport;
4398 4396 stmf_i_scsi_task_t *itask = (stmf_i_scsi_task_t *)
4399 4397 task->task_stmf_private;
4400 4398 stmf_i_scsi_session_t *iss = (stmf_i_scsi_session_t *)
4401 4399 task->task_session->ss_stmf_private;
4402 4400
4403 4401 stmf_task_audit(itask, TE_TASK_FREE, CMD_OR_IOF_NA, NULL);
4404 4402
4405 4403 stmf_free_task_bufs(itask, lport);
4406 4404 stmf_itl_task_done(itask);
4407 4405 DTRACE_PROBE2(stmf__task__end, scsi_task_t *, task,
4408 4406 hrtime_t,
4409 4407 itask->itask_done_timestamp - itask->itask_start_timestamp);
4410 4408 if (itask->itask_itl_datap) {
4411 4409 if (atomic_dec_32_nv(&itask->itask_itl_datap->itl_counter) ==
4412 4410 0) {
4413 4411 stmf_release_itl_handle(task->task_lu,
4414 4412 itask->itask_itl_datap);
4415 4413 }
4416 4414 }
4417 4415
4418 4416 rw_enter(iss->iss_lockp, RW_READER);
4419 4417 lport->lport_task_free(task);
4420 4418 if (itask->itask_worker) {
4421 4419 atomic_dec_32(&stmf_cur_ntasks);
4422 4420 atomic_dec_32(&itask->itask_worker->worker_ref_count);
4423 4421 }
4424 4422 /*
4425 4423 * After calling stmf_task_lu_free, the task pointer can no longer
4426 4424 * be trusted.
4427 4425 */
4428 4426 stmf_task_lu_free(task, iss);
4429 4427 rw_exit(iss->iss_lockp);
4430 4428 }
4431 4429
4432 4430 void
4433 4431 stmf_post_task(scsi_task_t *task, stmf_data_buf_t *dbuf)
4434 4432 {
4435 4433 stmf_i_scsi_task_t *itask = (stmf_i_scsi_task_t *)
4436 4434 task->task_stmf_private;
4437 4435 stmf_i_lu_t *ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private;
4438 4436 int nv;
4439 4437 uint32_t old, new;
4440 4438 uint32_t ct;
4441 4439 stmf_worker_t *w, *w1;
4442 4440 uint8_t tm;
4443 4441
4444 4442 if (task->task_max_nbufs > 4)
4445 4443 task->task_max_nbufs = 4;
4446 4444 task->task_cur_nbufs = 0;
4447 4445 /* Latest value of currently running tasks */
4448 4446 ct = atomic_inc_32_nv(&stmf_cur_ntasks);
4449 4447
4450 4448 /* Select the next worker using round robin */
4451 4449 nv = (int)atomic_inc_32_nv((uint32_t *)&stmf_worker_sel_counter);
4452 4450 if (nv >= stmf_nworkers_accepting_cmds) {
4453 4451 int s = nv;
4454 4452 do {
4455 4453 nv -= stmf_nworkers_accepting_cmds;
4456 4454 } while (nv >= stmf_nworkers_accepting_cmds);
4457 4455 if (nv < 0)
4458 4456 nv = 0;
4459 4457 /* Its ok if this cas fails */
4460 4458 (void) atomic_cas_32((uint32_t *)&stmf_worker_sel_counter,
4461 4459 s, nv);
4462 4460 }
4463 4461 w = &stmf_workers[nv];
4464 4462
4465 4463 /*
4466 4464 * A worker can be pinned by interrupt. So select the next one
4467 4465 * if it has lower load.
4468 4466 */
4469 4467 if ((nv + 1) >= stmf_nworkers_accepting_cmds) {
4470 4468 w1 = stmf_workers;
4471 4469 } else {
4472 4470 w1 = &stmf_workers[nv + 1];
4473 4471 }
4474 4472 if (w1->worker_queue_depth < w->worker_queue_depth)
4475 4473 w = w1;
4476 4474
4477 4475 mutex_enter(&w->worker_lock);
4478 4476 if (((w->worker_flags & STMF_WORKER_STARTED) == 0) ||
4479 4477 (w->worker_flags & STMF_WORKER_TERMINATE)) {
4480 4478 /*
4481 4479 * Maybe we are in the middle of a change. Just go to
4482 4480 * the 1st worker.
4483 4481 */
4484 4482 mutex_exit(&w->worker_lock);
4485 4483 w = stmf_workers;
4486 4484 mutex_enter(&w->worker_lock);
4487 4485 }
4488 4486 itask->itask_worker = w;
4489 4487 /*
4490 4488 * Track max system load inside the worker as we already have the
4491 4489 * worker lock (no point implementing another lock). The service
4492 4490 * thread will do the comparisons and figure out the max overall
4493 4491 * system load.
4494 4492 */
4495 4493 if (w->worker_max_sys_qdepth_pu < ct)
4496 4494 w->worker_max_sys_qdepth_pu = ct;
4497 4495
4498 4496 do {
4499 4497 old = new = itask->itask_flags;
4500 4498 new |= ITASK_KNOWN_TO_TGT_PORT | ITASK_IN_WORKER_QUEUE;
4501 4499 if (task->task_mgmt_function) {
4502 4500 tm = task->task_mgmt_function;
4503 4501 if ((tm == TM_TARGET_RESET) ||
4504 4502 (tm == TM_TARGET_COLD_RESET) ||
4505 4503 (tm == TM_TARGET_WARM_RESET)) {
4506 4504 new |= ITASK_DEFAULT_HANDLING;
4507 4505 }
4508 4506 } else if (task->task_cdb[0] == SCMD_REPORT_LUNS) {
4509 4507 new |= ITASK_DEFAULT_HANDLING;
4510 4508 }
4511 4509 new &= ~ITASK_IN_TRANSITION;
4512 4510 } while (atomic_cas_32(&itask->itask_flags, old, new) != old);
4513 4511
4514 4512 stmf_itl_task_start(itask);
4515 4513
4516 4514 itask->itask_worker_next = NULL;
4517 4515 if (w->worker_task_tail) {
4518 4516 w->worker_task_tail->itask_worker_next = itask;
4519 4517 } else {
4520 4518 w->worker_task_head = itask;
4521 4519 }
4522 4520 w->worker_task_tail = itask;
4523 4521 if (++(w->worker_queue_depth) > w->worker_max_qdepth_pu) {
4524 4522 w->worker_max_qdepth_pu = w->worker_queue_depth;
4525 4523 }
4526 4524 /* Measure task waitq time */
4527 4525 itask->itask_waitq_enter_timestamp = gethrtime();
4528 4526 atomic_inc_32(&w->worker_ref_count);
4529 4527 itask->itask_cmd_stack[0] = ITASK_CMD_NEW_TASK;
4530 4528 itask->itask_ncmds = 1;
4531 4529 stmf_task_audit(itask, TE_TASK_START, CMD_OR_IOF_NA, dbuf);
4532 4530 if (dbuf) {
4533 4531 itask->itask_allocated_buf_map = 1;
4534 4532 itask->itask_dbufs[0] = dbuf;
4535 4533 dbuf->db_handle = 0;
4536 4534 } else {
4537 4535 itask->itask_allocated_buf_map = 0;
4538 4536 itask->itask_dbufs[0] = NULL;
4539 4537 }
4540 4538
4541 4539 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0) {
4542 4540 w->worker_signal_timestamp = gethrtime();
4543 4541 DTRACE_PROBE2(worker__signal, stmf_worker_t *, w,
4544 4542 scsi_task_t *, task);
4545 4543 cv_signal(&w->worker_cv);
4546 4544 }
4547 4545 mutex_exit(&w->worker_lock);
4548 4546
4549 4547 /*
4550 4548 * This can only happen if during stmf_task_alloc(), ILU_RESET_ACTIVE
4551 4549 * was set between checking of ILU_RESET_ACTIVE and clearing of the
4552 4550 * ITASK_IN_FREE_LIST flag. Take care of these "sneaked-in" tasks here.
4553 4551 */
4554 4552 if (ilu->ilu_flags & ILU_RESET_ACTIVE) {
4555 4553 stmf_abort(STMF_QUEUE_TASK_ABORT, task, STMF_ABORTED, NULL);
4556 4554 }
4557 4555 }
4558 4556
4559 4557 static void
4560 4558 stmf_task_audit(stmf_i_scsi_task_t *itask,
4561 4559 task_audit_event_t te, uint32_t cmd_or_iof, stmf_data_buf_t *dbuf)
4562 4560 {
4563 4561 stmf_task_audit_rec_t *ar;
4564 4562
4565 4563 mutex_enter(&itask->itask_audit_mutex);
4566 4564 ar = &itask->itask_audit_records[itask->itask_audit_index++];
4567 4565 itask->itask_audit_index &= (ITASK_TASK_AUDIT_DEPTH - 1);
4568 4566 ar->ta_event = te;
4569 4567 ar->ta_cmd_or_iof = cmd_or_iof;
4570 4568 ar->ta_itask_flags = itask->itask_flags;
4571 4569 ar->ta_dbuf = dbuf;
4572 4570 gethrestime(&ar->ta_timestamp);
4573 4571 mutex_exit(&itask->itask_audit_mutex);
4574 4572 }
4575 4573
4576 4574
4577 4575 /*
4578 4576 * ++++++++++++++ ABORT LOGIC ++++++++++++++++++++
4579 4577 * Once ITASK_BEING_ABORTED is set, ITASK_KNOWN_TO_LU can be reset already
4580 4578 * i.e. before ITASK_BEING_ABORTED being set. But if it was not, it cannot
4581 4579 * be reset until the LU explicitly calls stmf_task_lu_aborted(). Of course
4582 4580 * the LU will make this call only if we call the LU's abort entry point.
4583 4581 * we will only call that entry point if ITASK_KNOWN_TO_LU was set.
4584 4582 *
4585 4583 * Same logic applies for the port.
4586 4584 *
4587 4585 * Also ITASK_BEING_ABORTED will not be allowed to set if both KNOWN_TO_LU
4588 4586 * and KNOWN_TO_TGT_PORT are reset.
4589 4587 *
4590 4588 * +++++++++++++++++++++++++++++++++++++++++++++++
4591 4589 */
4592 4590
4593 4591 stmf_status_t
4594 4592 stmf_xfer_data(scsi_task_t *task, stmf_data_buf_t *dbuf, uint32_t ioflags)
4595 4593 {
4596 4594 stmf_status_t ret = STMF_SUCCESS;
4597 4595
4598 4596 stmf_i_scsi_task_t *itask =
4599 4597 (stmf_i_scsi_task_t *)task->task_stmf_private;
4600 4598
4601 4599 stmf_task_audit(itask, TE_XFER_START, ioflags, dbuf);
4602 4600
4603 4601 if (ioflags & STMF_IOF_LU_DONE) {
4604 4602 uint32_t new, old;
4605 4603 do {
4606 4604 new = old = itask->itask_flags;
4607 4605 if (new & ITASK_BEING_ABORTED)
4608 4606 return (STMF_ABORTED);
4609 4607 new &= ~ITASK_KNOWN_TO_LU;
4610 4608 } while (atomic_cas_32(&itask->itask_flags, old, new) != old);
4611 4609 }
4612 4610 if (itask->itask_flags & ITASK_BEING_ABORTED)
4613 4611 return (STMF_ABORTED);
4614 4612 #ifdef DEBUG
4615 4613 if (!(ioflags & STMF_IOF_STATS_ONLY) && stmf_drop_buf_counter > 0) {
4616 4614 if (atomic_dec_32_nv(&stmf_drop_buf_counter) == 1)
4617 4615 return (STMF_SUCCESS);
4618 4616 }
4619 4617 #endif
4620 4618
4621 4619 stmf_update_kstat_lu_io(task, dbuf);
4622 4620 stmf_update_kstat_lport_io(task, dbuf);
4623 4621 stmf_lport_xfer_start(itask, dbuf);
4624 4622 if (ioflags & STMF_IOF_STATS_ONLY) {
4625 4623 stmf_lport_xfer_done(itask, dbuf);
4626 4624 return (STMF_SUCCESS);
4627 4625 }
4628 4626
4629 4627 dbuf->db_flags |= DB_LPORT_XFER_ACTIVE;
4630 4628 ret = task->task_lport->lport_xfer_data(task, dbuf, ioflags);
4631 4629
4632 4630 /*
4633 4631 * Port provider may have already called the buffer callback in
4634 4632 * which case dbuf->db_xfer_start_timestamp will be 0.
4635 4633 */
4636 4634 if (ret != STMF_SUCCESS) {
4637 4635 dbuf->db_flags &= ~DB_LPORT_XFER_ACTIVE;
4638 4636 if (dbuf->db_xfer_start_timestamp != 0)
4639 4637 stmf_lport_xfer_done(itask, dbuf);
4640 4638 }
4641 4639
4642 4640 return (ret);
4643 4641 }
4644 4642
4645 4643 void
4646 4644 stmf_data_xfer_done(scsi_task_t *task, stmf_data_buf_t *dbuf, uint32_t iof)
4647 4645 {
4648 4646 stmf_i_scsi_task_t *itask =
4649 4647 (stmf_i_scsi_task_t *)task->task_stmf_private;
4650 4648 stmf_i_local_port_t *ilport;
4651 4649 stmf_worker_t *w = itask->itask_worker;
4652 4650 uint32_t new, old;
4653 4651 uint8_t update_queue_flags, free_it, queue_it;
4654 4652
4655 4653 stmf_lport_xfer_done(itask, dbuf);
4656 4654
4657 4655 stmf_task_audit(itask, TE_XFER_DONE, iof, dbuf);
4658 4656
4659 4657 /* Guard against unexpected completions from the lport */
4660 4658 if (dbuf->db_flags & DB_LPORT_XFER_ACTIVE) {
4661 4659 dbuf->db_flags &= ~DB_LPORT_XFER_ACTIVE;
4662 4660 } else {
4663 4661 /*
4664 4662 * This should never happen.
4665 4663 */
4666 4664 ilport = task->task_lport->lport_stmf_private;
4667 4665 ilport->ilport_unexpected_comp++;
4668 4666 cmn_err(CE_PANIC, "Unexpected xfer completion task %p dbuf %p",
4669 4667 (void *)task, (void *)dbuf);
4670 4668 return;
4671 4669 }
4672 4670
4673 4671 mutex_enter(&w->worker_lock);
4674 4672 do {
4675 4673 new = old = itask->itask_flags;
4676 4674 if (old & ITASK_BEING_ABORTED) {
4677 4675 mutex_exit(&w->worker_lock);
4678 4676 return;
4679 4677 }
4680 4678 free_it = 0;
4681 4679 if (iof & STMF_IOF_LPORT_DONE) {
4682 4680 new &= ~ITASK_KNOWN_TO_TGT_PORT;
4683 4681 task->task_completion_status = dbuf->db_xfer_status;
4684 4682 free_it = 1;
4685 4683 }
4686 4684 /*
4687 4685 * If the task is known to LU then queue it. But if
4688 4686 * it is already queued (multiple completions) then
4689 4687 * just update the buffer information by grabbing the
4690 4688 * worker lock. If the task is not known to LU,
4691 4689 * completed/aborted, then see if we need to
4692 4690 * free this task.
4693 4691 */
4694 4692 if (old & ITASK_KNOWN_TO_LU) {
4695 4693 free_it = 0;
4696 4694 update_queue_flags = 1;
4697 4695 if (old & ITASK_IN_WORKER_QUEUE) {
4698 4696 queue_it = 0;
4699 4697 } else {
4700 4698 queue_it = 1;
4701 4699 new |= ITASK_IN_WORKER_QUEUE;
4702 4700 }
4703 4701 } else {
4704 4702 update_queue_flags = 0;
4705 4703 queue_it = 0;
4706 4704 }
4707 4705 } while (atomic_cas_32(&itask->itask_flags, old, new) != old);
4708 4706
4709 4707 if (update_queue_flags) {
4710 4708 uint8_t cmd = (dbuf->db_handle << 5) | ITASK_CMD_DATA_XFER_DONE;
4711 4709
4712 4710 ASSERT(itask->itask_ncmds < ITASK_MAX_NCMDS);
4713 4711 itask->itask_cmd_stack[itask->itask_ncmds++] = cmd;
4714 4712 if (queue_it) {
4715 4713 itask->itask_worker_next = NULL;
4716 4714 if (w->worker_task_tail) {
4717 4715 w->worker_task_tail->itask_worker_next = itask;
4718 4716 } else {
4719 4717 w->worker_task_head = itask;
4720 4718 }
4721 4719 w->worker_task_tail = itask;
4722 4720 /* Measure task waitq time */
4723 4721 itask->itask_waitq_enter_timestamp = gethrtime();
4724 4722 if (++(w->worker_queue_depth) >
4725 4723 w->worker_max_qdepth_pu) {
4726 4724 w->worker_max_qdepth_pu = w->worker_queue_depth;
4727 4725 }
4728 4726 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0)
4729 4727 cv_signal(&w->worker_cv);
4730 4728 }
4731 4729 }
4732 4730 mutex_exit(&w->worker_lock);
4733 4731
4734 4732 if (free_it) {
4735 4733 if ((itask->itask_flags & (ITASK_KNOWN_TO_LU |
4736 4734 ITASK_KNOWN_TO_TGT_PORT | ITASK_IN_WORKER_QUEUE |
4737 4735 ITASK_BEING_ABORTED)) == 0) {
4738 4736 stmf_task_free(task);
4739 4737 }
4740 4738 }
4741 4739 }
4742 4740
4743 4741 stmf_status_t
4744 4742 stmf_send_scsi_status(scsi_task_t *task, uint32_t ioflags)
4745 4743 {
4746 4744 DTRACE_PROBE1(scsi__send__status, scsi_task_t *, task);
4747 4745
4748 4746 stmf_i_scsi_task_t *itask =
4749 4747 (stmf_i_scsi_task_t *)task->task_stmf_private;
4750 4748
4751 4749 stmf_task_audit(itask, TE_SEND_STATUS, ioflags, NULL);
4752 4750
4753 4751 if (ioflags & STMF_IOF_LU_DONE) {
4754 4752 uint32_t new, old;
4755 4753 do {
4756 4754 new = old = itask->itask_flags;
4757 4755 if (new & ITASK_BEING_ABORTED)
4758 4756 return (STMF_ABORTED);
4759 4757 new &= ~ITASK_KNOWN_TO_LU;
4760 4758 } while (atomic_cas_32(&itask->itask_flags, old, new) != old);
4761 4759 }
4762 4760
4763 4761 if (!(itask->itask_flags & ITASK_KNOWN_TO_TGT_PORT)) {
4764 4762 return (STMF_SUCCESS);
4765 4763 }
4766 4764
4767 4765 if (itask->itask_flags & ITASK_BEING_ABORTED)
4768 4766 return (STMF_ABORTED);
4769 4767
4770 4768 if (task->task_additional_flags & TASK_AF_NO_EXPECTED_XFER_LENGTH) {
4771 4769 task->task_status_ctrl = 0;
4772 4770 task->task_resid = 0;
4773 4771 } else if (task->task_cmd_xfer_length >
4774 4772 task->task_expected_xfer_length) {
4775 4773 task->task_status_ctrl = TASK_SCTRL_OVER;
4776 4774 task->task_resid = task->task_cmd_xfer_length -
4777 4775 task->task_expected_xfer_length;
4778 4776 } else if (task->task_nbytes_transferred <
4779 4777 task->task_expected_xfer_length) {
4780 4778 task->task_status_ctrl = TASK_SCTRL_UNDER;
4781 4779 task->task_resid = task->task_expected_xfer_length -
4782 4780 task->task_nbytes_transferred;
4783 4781 } else {
4784 4782 task->task_status_ctrl = 0;
4785 4783 task->task_resid = 0;
4786 4784 }
4787 4785 return (task->task_lport->lport_send_status(task, ioflags));
4788 4786 }
4789 4787
4790 4788 void
4791 4789 stmf_send_status_done(scsi_task_t *task, stmf_status_t s, uint32_t iof)
4792 4790 {
4793 4791 stmf_i_scsi_task_t *itask =
4794 4792 (stmf_i_scsi_task_t *)task->task_stmf_private;
4795 4793 stmf_worker_t *w = itask->itask_worker;
4796 4794 uint32_t new, old;
4797 4795 uint8_t free_it, queue_it;
4798 4796
4799 4797 stmf_task_audit(itask, TE_SEND_STATUS_DONE, iof, NULL);
4800 4798
4801 4799 mutex_enter(&w->worker_lock);
4802 4800 do {
4803 4801 new = old = itask->itask_flags;
4804 4802 if (old & ITASK_BEING_ABORTED) {
4805 4803 mutex_exit(&w->worker_lock);
4806 4804 return;
4807 4805 }
4808 4806 free_it = 0;
4809 4807 if (iof & STMF_IOF_LPORT_DONE) {
4810 4808 new &= ~ITASK_KNOWN_TO_TGT_PORT;
4811 4809 free_it = 1;
4812 4810 }
4813 4811 /*
4814 4812 * If the task is known to LU then queue it. But if
4815 4813 * it is already queued (multiple completions) then
4816 4814 * just update the buffer information by grabbing the
4817 4815 * worker lock. If the task is not known to LU,
4818 4816 * completed/aborted, then see if we need to
4819 4817 * free this task.
4820 4818 */
4821 4819 if (old & ITASK_KNOWN_TO_LU) {
4822 4820 free_it = 0;
4823 4821 queue_it = 1;
4824 4822 if (old & ITASK_IN_WORKER_QUEUE) {
4825 4823 cmn_err(CE_PANIC, "status completion received"
4826 4824 " when task is already in worker queue "
4827 4825 " task = %p", (void *)task);
4828 4826 }
4829 4827 new |= ITASK_IN_WORKER_QUEUE;
4830 4828 } else {
4831 4829 queue_it = 0;
4832 4830 }
4833 4831 } while (atomic_cas_32(&itask->itask_flags, old, new) != old);
4834 4832 task->task_completion_status = s;
4835 4833
4836 4834
4837 4835 if (queue_it) {
4838 4836 ASSERT(itask->itask_ncmds < ITASK_MAX_NCMDS);
4839 4837 itask->itask_cmd_stack[itask->itask_ncmds++] =
4840 4838 ITASK_CMD_STATUS_DONE;
4841 4839 itask->itask_worker_next = NULL;
4842 4840 if (w->worker_task_tail) {
4843 4841 w->worker_task_tail->itask_worker_next = itask;
4844 4842 } else {
4845 4843 w->worker_task_head = itask;
4846 4844 }
4847 4845 w->worker_task_tail = itask;
4848 4846 /* Measure task waitq time */
4849 4847 itask->itask_waitq_enter_timestamp = gethrtime();
4850 4848 if (++(w->worker_queue_depth) > w->worker_max_qdepth_pu) {
4851 4849 w->worker_max_qdepth_pu = w->worker_queue_depth;
4852 4850 }
4853 4851 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0)
4854 4852 cv_signal(&w->worker_cv);
4855 4853 }
4856 4854 mutex_exit(&w->worker_lock);
4857 4855
4858 4856 if (free_it) {
4859 4857 if ((itask->itask_flags & (ITASK_KNOWN_TO_LU |
4860 4858 ITASK_KNOWN_TO_TGT_PORT | ITASK_IN_WORKER_QUEUE |
4861 4859 ITASK_BEING_ABORTED)) == 0) {
4862 4860 stmf_task_free(task);
4863 4861 } else {
4864 4862 cmn_err(CE_PANIC, "LU is done with the task but LPORT "
4865 4863 " is not done, itask %p itask_flags %x",
4866 4864 (void *)itask, itask->itask_flags);
4867 4865 }
4868 4866 }
4869 4867 }
4870 4868
4871 4869 void
4872 4870 stmf_task_lu_done(scsi_task_t *task)
4873 4871 {
4874 4872 stmf_i_scsi_task_t *itask =
4875 4873 (stmf_i_scsi_task_t *)task->task_stmf_private;
4876 4874 stmf_worker_t *w = itask->itask_worker;
4877 4875 uint32_t new, old;
4878 4876
4879 4877 mutex_enter(&w->worker_lock);
4880 4878 do {
4881 4879 new = old = itask->itask_flags;
4882 4880 if (old & ITASK_BEING_ABORTED) {
4883 4881 mutex_exit(&w->worker_lock);
4884 4882 return;
4885 4883 }
4886 4884 if (old & ITASK_IN_WORKER_QUEUE) {
4887 4885 cmn_err(CE_PANIC, "task_lu_done received"
4888 4886 " when task is in worker queue "
4889 4887 " task = %p", (void *)task);
4890 4888 }
4891 4889 new &= ~ITASK_KNOWN_TO_LU;
4892 4890 } while (atomic_cas_32(&itask->itask_flags, old, new) != old);
4893 4891
4894 4892 mutex_exit(&w->worker_lock);
4895 4893
4896 4894 if ((itask->itask_flags & (ITASK_KNOWN_TO_LU |
4897 4895 ITASK_KNOWN_TO_TGT_PORT | ITASK_IN_WORKER_QUEUE |
4898 4896 ITASK_BEING_ABORTED)) == 0) {
4899 4897 stmf_task_free(task);
4900 4898 } else {
4901 4899 cmn_err(CE_PANIC, "stmf_lu_done should be the last stage but "
4902 4900 " the task is still not done, task = %p", (void *)task);
4903 4901 }
4904 4902 }
4905 4903
4906 4904 void
4907 4905 stmf_queue_task_for_abort(scsi_task_t *task, stmf_status_t s)
4908 4906 {
4909 4907 stmf_i_scsi_task_t *itask =
4910 4908 (stmf_i_scsi_task_t *)task->task_stmf_private;
4911 4909 stmf_worker_t *w;
4912 4910 uint32_t old, new;
4913 4911
4914 4912 stmf_task_audit(itask, TE_TASK_ABORT, CMD_OR_IOF_NA, NULL);
4915 4913
4916 4914 do {
4917 4915 old = new = itask->itask_flags;
4918 4916 if ((old & ITASK_BEING_ABORTED) ||
4919 4917 ((old & (ITASK_KNOWN_TO_TGT_PORT |
4920 4918 ITASK_KNOWN_TO_LU)) == 0)) {
4921 4919 return;
4922 4920 }
4923 4921 new |= ITASK_BEING_ABORTED;
4924 4922 } while (atomic_cas_32(&itask->itask_flags, old, new) != old);
4925 4923 task->task_completion_status = s;
4926 4924 itask->itask_start_time = ddi_get_lbolt();
4927 4925
4928 4926 if (((w = itask->itask_worker) == NULL) ||
4929 4927 (itask->itask_flags & ITASK_IN_TRANSITION)) {
4930 4928 return;
4931 4929 }
4932 4930
4933 4931 /* Queue it and get out */
4934 4932 mutex_enter(&w->worker_lock);
4935 4933 if (itask->itask_flags & ITASK_IN_WORKER_QUEUE) {
4936 4934 mutex_exit(&w->worker_lock);
4937 4935 return;
4938 4936 }
4939 4937 atomic_or_32(&itask->itask_flags, ITASK_IN_WORKER_QUEUE);
4940 4938 itask->itask_worker_next = NULL;
4941 4939 if (w->worker_task_tail) {
4942 4940 w->worker_task_tail->itask_worker_next = itask;
4943 4941 } else {
4944 4942 w->worker_task_head = itask;
4945 4943 }
4946 4944 w->worker_task_tail = itask;
4947 4945 if (++(w->worker_queue_depth) > w->worker_max_qdepth_pu) {
4948 4946 w->worker_max_qdepth_pu = w->worker_queue_depth;
4949 4947 }
4950 4948 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0)
4951 4949 cv_signal(&w->worker_cv);
4952 4950 mutex_exit(&w->worker_lock);
4953 4951 }
4954 4952
4955 4953 void
4956 4954 stmf_abort(int abort_cmd, scsi_task_t *task, stmf_status_t s, void *arg)
4957 4955 {
4958 4956 stmf_i_scsi_task_t *itask = NULL;
4959 4957 uint32_t old, new, f, rf;
4960 4958
4961 4959 DTRACE_PROBE2(scsi__task__abort, scsi_task_t *, task,
4962 4960 stmf_status_t, s);
4963 4961
4964 4962 switch (abort_cmd) {
4965 4963 case STMF_QUEUE_ABORT_LU:
4966 4964 stmf_task_lu_killall((stmf_lu_t *)arg, task, s);
4967 4965 return;
4968 4966 case STMF_QUEUE_TASK_ABORT:
4969 4967 stmf_queue_task_for_abort(task, s);
4970 4968 return;
4971 4969 case STMF_REQUEUE_TASK_ABORT_LPORT:
4972 4970 rf = ITASK_TGT_PORT_ABORT_CALLED;
4973 4971 f = ITASK_KNOWN_TO_TGT_PORT;
4974 4972 break;
4975 4973 case STMF_REQUEUE_TASK_ABORT_LU:
4976 4974 rf = ITASK_LU_ABORT_CALLED;
4977 4975 f = ITASK_KNOWN_TO_LU;
4978 4976 break;
4979 4977 default:
4980 4978 return;
4981 4979 }
4982 4980 itask = (stmf_i_scsi_task_t *)task->task_stmf_private;
4983 4981 f |= ITASK_BEING_ABORTED | rf;
4984 4982 do {
4985 4983 old = new = itask->itask_flags;
4986 4984 if ((old & f) != f) {
4987 4985 return;
4988 4986 }
4989 4987 new &= ~rf;
4990 4988 } while (atomic_cas_32(&itask->itask_flags, old, new) != old);
4991 4989 }
4992 4990
4993 4991 void
4994 4992 stmf_task_lu_aborted(scsi_task_t *task, stmf_status_t s, uint32_t iof)
4995 4993 {
4996 4994 char info[STMF_CHANGE_INFO_LEN];
4997 4995 stmf_i_scsi_task_t *itask = TASK_TO_ITASK(task);
4998 4996 unsigned long long st;
4999 4997
5000 4998 stmf_task_audit(itask, TE_TASK_LU_ABORTED, iof, NULL);
5001 4999
5002 5000 st = s; /* gcc fix */
5003 5001 if ((s != STMF_ABORT_SUCCESS) && (s != STMF_NOT_FOUND)) {
5004 5002 (void) snprintf(info, sizeof (info),
5005 5003 "task %p, lu failed to abort ret=%llx", (void *)task, st);
5006 5004 } else if ((iof & STMF_IOF_LU_DONE) == 0) {
5007 5005 (void) snprintf(info, sizeof (info),
5008 5006 "Task aborted but LU is not finished, task ="
5009 5007 "%p, s=%llx, iof=%x", (void *)task, st, iof);
5010 5008 } else {
5011 5009 /*
5012 5010 * LU abort successfully
5013 5011 */
5014 5012 atomic_and_32(&itask->itask_flags, ~ITASK_KNOWN_TO_LU);
5015 5013 return;
5016 5014 }
5017 5015
5018 5016 stmf_abort_task_offline(task, 1, info);
5019 5017 }
5020 5018
5021 5019 void
5022 5020 stmf_task_lport_aborted(scsi_task_t *task, stmf_status_t s, uint32_t iof)
5023 5021 {
5024 5022 char info[STMF_CHANGE_INFO_LEN];
5025 5023 stmf_i_scsi_task_t *itask = TASK_TO_ITASK(task);
5026 5024 unsigned long long st;
5027 5025 uint32_t old, new;
5028 5026
5029 5027 stmf_task_audit(itask, TE_TASK_LPORT_ABORTED, iof, NULL);
5030 5028
5031 5029 st = s;
5032 5030 if ((s != STMF_ABORT_SUCCESS) && (s != STMF_NOT_FOUND)) {
5033 5031 (void) snprintf(info, sizeof (info),
5034 5032 "task %p, tgt port failed to abort ret=%llx", (void *)task,
5035 5033 st);
5036 5034 } else if ((iof & STMF_IOF_LPORT_DONE) == 0) {
5037 5035 (void) snprintf(info, sizeof (info),
5038 5036 "Task aborted but tgt port is not finished, "
5039 5037 "task=%p, s=%llx, iof=%x", (void *)task, st, iof);
5040 5038 } else {
5041 5039 /*
5042 5040 * LPORT abort successfully
5043 5041 */
5044 5042 do {
5045 5043 old = new = itask->itask_flags;
5046 5044 if (!(old & ITASK_KNOWN_TO_TGT_PORT))
5047 5045 return;
5048 5046 new &= ~ITASK_KNOWN_TO_TGT_PORT;
5049 5047 } while (atomic_cas_32(&itask->itask_flags, old, new) != old);
5050 5048 return;
5051 5049 }
5052 5050
5053 5051 stmf_abort_task_offline(task, 0, info);
5054 5052 }
5055 5053
5056 5054 stmf_status_t
5057 5055 stmf_task_poll_lu(scsi_task_t *task, uint32_t timeout)
5058 5056 {
5059 5057 stmf_i_scsi_task_t *itask = (stmf_i_scsi_task_t *)
5060 5058 task->task_stmf_private;
5061 5059 stmf_worker_t *w = itask->itask_worker;
5062 5060 int i;
5063 5061
5064 5062 ASSERT(itask->itask_flags & ITASK_KNOWN_TO_LU);
5065 5063 mutex_enter(&w->worker_lock);
5066 5064 if (itask->itask_ncmds >= ITASK_MAX_NCMDS) {
5067 5065 mutex_exit(&w->worker_lock);
5068 5066 return (STMF_BUSY);
5069 5067 }
5070 5068 for (i = 0; i < itask->itask_ncmds; i++) {
5071 5069 if (itask->itask_cmd_stack[i] == ITASK_CMD_POLL_LU) {
5072 5070 mutex_exit(&w->worker_lock);
5073 5071 return (STMF_SUCCESS);
5074 5072 }
5075 5073 }
5076 5074 itask->itask_cmd_stack[itask->itask_ncmds++] = ITASK_CMD_POLL_LU;
5077 5075 if (timeout == ITASK_DEFAULT_POLL_TIMEOUT) {
5078 5076 itask->itask_poll_timeout = ddi_get_lbolt() + 1;
5079 5077 } else {
5080 5078 clock_t t = drv_usectohz(timeout * 1000);
5081 5079 if (t == 0)
5082 5080 t = 1;
5083 5081 itask->itask_poll_timeout = ddi_get_lbolt() + t;
5084 5082 }
5085 5083 if ((itask->itask_flags & ITASK_IN_WORKER_QUEUE) == 0) {
5086 5084 itask->itask_worker_next = NULL;
5087 5085 if (w->worker_task_tail) {
5088 5086 w->worker_task_tail->itask_worker_next = itask;
5089 5087 } else {
5090 5088 w->worker_task_head = itask;
5091 5089 }
5092 5090 w->worker_task_tail = itask;
5093 5091 if (++(w->worker_queue_depth) > w->worker_max_qdepth_pu) {
5094 5092 w->worker_max_qdepth_pu = w->worker_queue_depth;
5095 5093 }
5096 5094 atomic_or_32(&itask->itask_flags, ITASK_IN_WORKER_QUEUE);
5097 5095 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0)
5098 5096 cv_signal(&w->worker_cv);
5099 5097 }
5100 5098 mutex_exit(&w->worker_lock);
5101 5099 return (STMF_SUCCESS);
5102 5100 }
5103 5101
5104 5102 stmf_status_t
5105 5103 stmf_task_poll_lport(scsi_task_t *task, uint32_t timeout)
5106 5104 {
5107 5105 stmf_i_scsi_task_t *itask = (stmf_i_scsi_task_t *)
5108 5106 task->task_stmf_private;
5109 5107 stmf_worker_t *w = itask->itask_worker;
5110 5108 int i;
5111 5109
5112 5110 ASSERT(itask->itask_flags & ITASK_KNOWN_TO_TGT_PORT);
5113 5111 mutex_enter(&w->worker_lock);
5114 5112 if (itask->itask_ncmds >= ITASK_MAX_NCMDS) {
5115 5113 mutex_exit(&w->worker_lock);
5116 5114 return (STMF_BUSY);
5117 5115 }
5118 5116 for (i = 0; i < itask->itask_ncmds; i++) {
5119 5117 if (itask->itask_cmd_stack[i] == ITASK_CMD_POLL_LPORT) {
5120 5118 mutex_exit(&w->worker_lock);
5121 5119 return (STMF_SUCCESS);
5122 5120 }
5123 5121 }
5124 5122 itask->itask_cmd_stack[itask->itask_ncmds++] = ITASK_CMD_POLL_LPORT;
5125 5123 if (timeout == ITASK_DEFAULT_POLL_TIMEOUT) {
5126 5124 itask->itask_poll_timeout = ddi_get_lbolt() + 1;
5127 5125 } else {
5128 5126 clock_t t = drv_usectohz(timeout * 1000);
5129 5127 if (t == 0)
5130 5128 t = 1;
5131 5129 itask->itask_poll_timeout = ddi_get_lbolt() + t;
5132 5130 }
5133 5131 if ((itask->itask_flags & ITASK_IN_WORKER_QUEUE) == 0) {
5134 5132 itask->itask_worker_next = NULL;
5135 5133 if (w->worker_task_tail) {
5136 5134 w->worker_task_tail->itask_worker_next = itask;
5137 5135 } else {
5138 5136 w->worker_task_head = itask;
5139 5137 }
5140 5138 w->worker_task_tail = itask;
5141 5139 if (++(w->worker_queue_depth) > w->worker_max_qdepth_pu) {
5142 5140 w->worker_max_qdepth_pu = w->worker_queue_depth;
5143 5141 }
5144 5142 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0)
5145 5143 cv_signal(&w->worker_cv);
5146 5144 }
5147 5145 mutex_exit(&w->worker_lock);
5148 5146 return (STMF_SUCCESS);
5149 5147 }
5150 5148
5151 5149 void
5152 5150 stmf_do_task_abort(scsi_task_t *task)
5153 5151 {
5154 5152 stmf_i_scsi_task_t *itask = TASK_TO_ITASK(task);
5155 5153 stmf_lu_t *lu;
5156 5154 stmf_local_port_t *lport;
5157 5155 unsigned long long ret;
5158 5156 uint32_t old, new;
5159 5157 uint8_t call_lu_abort, call_port_abort;
5160 5158 char info[STMF_CHANGE_INFO_LEN];
5161 5159
5162 5160 lu = task->task_lu;
5163 5161 lport = task->task_lport;
5164 5162 do {
5165 5163 old = new = itask->itask_flags;
5166 5164 if ((old & (ITASK_KNOWN_TO_LU | ITASK_LU_ABORT_CALLED)) ==
5167 5165 ITASK_KNOWN_TO_LU) {
5168 5166 new |= ITASK_LU_ABORT_CALLED;
5169 5167 call_lu_abort = 1;
5170 5168 } else {
5171 5169 call_lu_abort = 0;
5172 5170 }
5173 5171 } while (atomic_cas_32(&itask->itask_flags, old, new) != old);
5174 5172
5175 5173 if (call_lu_abort) {
5176 5174 if ((itask->itask_flags & ITASK_DEFAULT_HANDLING) == 0) {
5177 5175 ret = lu->lu_abort(lu, STMF_LU_ABORT_TASK, task, 0);
5178 5176 } else {
5179 5177 ret = dlun0->lu_abort(lu, STMF_LU_ABORT_TASK, task, 0);
5180 5178 }
5181 5179 if ((ret == STMF_ABORT_SUCCESS) || (ret == STMF_NOT_FOUND)) {
5182 5180 stmf_task_lu_aborted(task, ret, STMF_IOF_LU_DONE);
5183 5181 } else if (ret == STMF_BUSY) {
5184 5182 atomic_and_32(&itask->itask_flags,
5185 5183 ~ITASK_LU_ABORT_CALLED);
5186 5184 } else if (ret != STMF_SUCCESS) {
5187 5185 (void) snprintf(info, sizeof (info),
5188 5186 "Abort failed by LU %p, ret %llx", (void *)lu, ret);
5189 5187 stmf_abort_task_offline(task, 1, info);
5190 5188 }
5191 5189 } else if (itask->itask_flags & ITASK_KNOWN_TO_LU) {
5192 5190 if (ddi_get_lbolt() > (itask->itask_start_time +
5193 5191 STMF_SEC2TICK(lu->lu_abort_timeout?
5194 5192 lu->lu_abort_timeout : ITASK_DEFAULT_ABORT_TIMEOUT))) {
5195 5193 (void) snprintf(info, sizeof (info),
5196 5194 "lu abort timed out");
5197 5195 stmf_abort_task_offline(itask->itask_task, 1, info);
5198 5196 }
5199 5197 }
5200 5198
5201 5199 do {
5202 5200 old = new = itask->itask_flags;
5203 5201 if ((old & (ITASK_KNOWN_TO_TGT_PORT |
5204 5202 ITASK_TGT_PORT_ABORT_CALLED)) == ITASK_KNOWN_TO_TGT_PORT) {
5205 5203 new |= ITASK_TGT_PORT_ABORT_CALLED;
5206 5204 call_port_abort = 1;
5207 5205 } else {
5208 5206 call_port_abort = 0;
5209 5207 }
5210 5208 } while (atomic_cas_32(&itask->itask_flags, old, new) != old);
5211 5209 if (call_port_abort) {
5212 5210 ret = lport->lport_abort(lport, STMF_LPORT_ABORT_TASK, task, 0);
5213 5211 if ((ret == STMF_ABORT_SUCCESS) || (ret == STMF_NOT_FOUND)) {
5214 5212 stmf_task_lport_aborted(task, ret, STMF_IOF_LPORT_DONE);
5215 5213 } else if (ret == STMF_BUSY) {
5216 5214 atomic_and_32(&itask->itask_flags,
5217 5215 ~ITASK_TGT_PORT_ABORT_CALLED);
5218 5216 } else if (ret != STMF_SUCCESS) {
5219 5217 (void) snprintf(info, sizeof (info),
5220 5218 "Abort failed by tgt port %p ret %llx",
5221 5219 (void *)lport, ret);
5222 5220 stmf_abort_task_offline(task, 0, info);
5223 5221 }
5224 5222 } else if (itask->itask_flags & ITASK_KNOWN_TO_TGT_PORT) {
5225 5223 if (ddi_get_lbolt() > (itask->itask_start_time +
5226 5224 STMF_SEC2TICK(lport->lport_abort_timeout?
5227 5225 lport->lport_abort_timeout :
5228 5226 ITASK_DEFAULT_ABORT_TIMEOUT))) {
5229 5227 (void) snprintf(info, sizeof (info),
5230 5228 "lport abort timed out");
5231 5229 stmf_abort_task_offline(itask->itask_task, 0, info);
5232 5230 }
5233 5231 }
5234 5232 }
5235 5233
5236 5234 stmf_status_t
5237 5235 stmf_ctl(int cmd, void *obj, void *arg)
5238 5236 {
5239 5237 stmf_status_t ret;
5240 5238 stmf_i_lu_t *ilu;
5241 5239 stmf_i_local_port_t *ilport;
5242 5240 stmf_state_change_info_t *ssci = (stmf_state_change_info_t *)arg;
5243 5241
5244 5242 mutex_enter(&stmf_state.stmf_lock);
5245 5243 ret = STMF_INVALID_ARG;
5246 5244 if (cmd & STMF_CMD_LU_OP) {
5247 5245 ilu = stmf_lookup_lu((stmf_lu_t *)obj);
5248 5246 if (ilu == NULL) {
5249 5247 goto stmf_ctl_lock_exit;
5250 5248 }
5251 5249 DTRACE_PROBE3(lu__state__change,
5252 5250 stmf_lu_t *, ilu->ilu_lu,
5253 5251 int, cmd, stmf_state_change_info_t *, ssci);
5254 5252 } else if (cmd & STMF_CMD_LPORT_OP) {
5255 5253 ilport = stmf_lookup_lport((stmf_local_port_t *)obj);
5256 5254 if (ilport == NULL) {
5257 5255 goto stmf_ctl_lock_exit;
5258 5256 }
5259 5257 DTRACE_PROBE3(lport__state__change,
5260 5258 stmf_local_port_t *, ilport->ilport_lport,
5261 5259 int, cmd, stmf_state_change_info_t *, ssci);
5262 5260 } else {
5263 5261 goto stmf_ctl_lock_exit;
5264 5262 }
5265 5263
5266 5264 switch (cmd) {
5267 5265 case STMF_CMD_LU_ONLINE:
5268 5266 switch (ilu->ilu_state) {
5269 5267 case STMF_STATE_OFFLINE:
5270 5268 ret = STMF_SUCCESS;
5271 5269 break;
5272 5270 case STMF_STATE_ONLINE:
5273 5271 case STMF_STATE_ONLINING:
5274 5272 ret = STMF_ALREADY;
5275 5273 break;
5276 5274 case STMF_STATE_OFFLINING:
5277 5275 ret = STMF_BUSY;
5278 5276 break;
5279 5277 default:
5280 5278 ret = STMF_BADSTATE;
5281 5279 break;
5282 5280 }
5283 5281 if (ret != STMF_SUCCESS)
5284 5282 goto stmf_ctl_lock_exit;
5285 5283
5286 5284 ilu->ilu_state = STMF_STATE_ONLINING;
5287 5285 mutex_exit(&stmf_state.stmf_lock);
5288 5286 stmf_svc_queue(cmd, obj, (stmf_state_change_info_t *)arg);
5289 5287 break;
5290 5288
5291 5289 case STMF_CMD_LU_ONLINE_COMPLETE:
5292 5290 if (ilu->ilu_state != STMF_STATE_ONLINING) {
5293 5291 ret = STMF_BADSTATE;
5294 5292 goto stmf_ctl_lock_exit;
5295 5293 }
5296 5294 if (((stmf_change_status_t *)arg)->st_completion_status ==
5297 5295 STMF_SUCCESS) {
5298 5296 ilu->ilu_state = STMF_STATE_ONLINE;
5299 5297 mutex_exit(&stmf_state.stmf_lock);
5300 5298 ((stmf_lu_t *)obj)->lu_ctl((stmf_lu_t *)obj,
5301 5299 STMF_ACK_LU_ONLINE_COMPLETE, arg);
5302 5300 mutex_enter(&stmf_state.stmf_lock);
5303 5301 stmf_add_lu_to_active_sessions((stmf_lu_t *)obj);
5304 5302 } else {
5305 5303 /* XXX: should throw a meesage an record more data */
5306 5304 ilu->ilu_state = STMF_STATE_OFFLINE;
5307 5305 }
5308 5306 ret = STMF_SUCCESS;
5309 5307 goto stmf_ctl_lock_exit;
5310 5308
5311 5309 case STMF_CMD_LU_OFFLINE:
5312 5310 switch (ilu->ilu_state) {
5313 5311 case STMF_STATE_ONLINE:
5314 5312 ret = STMF_SUCCESS;
5315 5313 break;
5316 5314 case STMF_STATE_OFFLINE:
5317 5315 case STMF_STATE_OFFLINING:
5318 5316 ret = STMF_ALREADY;
5319 5317 break;
5320 5318 case STMF_STATE_ONLINING:
5321 5319 ret = STMF_BUSY;
5322 5320 break;
5323 5321 default:
5324 5322 ret = STMF_BADSTATE;
5325 5323 break;
5326 5324 }
5327 5325 if (ret != STMF_SUCCESS)
5328 5326 goto stmf_ctl_lock_exit;
5329 5327 ilu->ilu_state = STMF_STATE_OFFLINING;
5330 5328 mutex_exit(&stmf_state.stmf_lock);
5331 5329 stmf_svc_queue(cmd, obj, (stmf_state_change_info_t *)arg);
5332 5330 break;
5333 5331
5334 5332 case STMF_CMD_LU_OFFLINE_COMPLETE:
5335 5333 if (ilu->ilu_state != STMF_STATE_OFFLINING) {
5336 5334 ret = STMF_BADSTATE;
5337 5335 goto stmf_ctl_lock_exit;
5338 5336 }
5339 5337 if (((stmf_change_status_t *)arg)->st_completion_status ==
5340 5338 STMF_SUCCESS) {
5341 5339 ilu->ilu_state = STMF_STATE_OFFLINE;
5342 5340 mutex_exit(&stmf_state.stmf_lock);
5343 5341 ((stmf_lu_t *)obj)->lu_ctl((stmf_lu_t *)obj,
5344 5342 STMF_ACK_LU_OFFLINE_COMPLETE, arg);
5345 5343 mutex_enter(&stmf_state.stmf_lock);
5346 5344 } else {
5347 5345 ilu->ilu_state = STMF_STATE_ONLINE;
5348 5346 stmf_add_lu_to_active_sessions((stmf_lu_t *)obj);
5349 5347 }
5350 5348 mutex_exit(&stmf_state.stmf_lock);
5351 5349 break;
5352 5350
5353 5351 /*
5354 5352 * LPORT_ONLINE/OFFLINE has nothing to do with link offline/online.
5355 5353 * It's related with hardware disable/enable.
5356 5354 */
5357 5355 case STMF_CMD_LPORT_ONLINE:
5358 5356 switch (ilport->ilport_state) {
5359 5357 case STMF_STATE_OFFLINE:
5360 5358 ret = STMF_SUCCESS;
5361 5359 break;
5362 5360 case STMF_STATE_ONLINE:
5363 5361 case STMF_STATE_ONLINING:
5364 5362 ret = STMF_ALREADY;
5365 5363 break;
5366 5364 case STMF_STATE_OFFLINING:
5367 5365 ret = STMF_BUSY;
5368 5366 break;
5369 5367 default:
5370 5368 ret = STMF_BADSTATE;
5371 5369 break;
5372 5370 }
5373 5371 if (ret != STMF_SUCCESS)
5374 5372 goto stmf_ctl_lock_exit;
5375 5373
5376 5374 /*
5377 5375 * Only user request can recover the port from the
5378 5376 * FORCED_OFFLINE state
5379 5377 */
5380 5378 if (ilport->ilport_flags & ILPORT_FORCED_OFFLINE) {
5381 5379 if (!(ssci->st_rflags & STMF_RFLAG_USER_REQUEST)) {
5382 5380 ret = STMF_FAILURE;
5383 5381 goto stmf_ctl_lock_exit;
5384 5382 }
5385 5383 }
5386 5384
5387 5385 /*
5388 5386 * Avoid too frequent request to online
5389 5387 */
5390 5388 if (ssci->st_rflags & STMF_RFLAG_USER_REQUEST) {
5391 5389 ilport->ilport_online_times = 0;
5392 5390 ilport->ilport_avg_interval = 0;
5393 5391 }
5394 5392 if ((ilport->ilport_avg_interval < STMF_AVG_ONLINE_INTERVAL) &&
5395 5393 (ilport->ilport_online_times >= 4)) {
5396 5394 ret = STMF_FAILURE;
5397 5395 ilport->ilport_flags |= ILPORT_FORCED_OFFLINE;
5398 5396 stmf_trace(NULL, "stmf_ctl: too frequent request to "
5399 5397 "online the port");
5400 5398 cmn_err(CE_WARN, "stmf_ctl: too frequent request to "
5401 5399 "online the port, set FORCED_OFFLINE now");
5402 5400 goto stmf_ctl_lock_exit;
5403 5401 }
5404 5402 if (ilport->ilport_online_times > 0) {
5405 5403 if (ilport->ilport_online_times == 1) {
5406 5404 ilport->ilport_avg_interval = ddi_get_lbolt() -
5407 5405 ilport->ilport_last_online_clock;
5408 5406 } else {
5409 5407 ilport->ilport_avg_interval =
5410 5408 (ilport->ilport_avg_interval +
5411 5409 ddi_get_lbolt() -
5412 5410 ilport->ilport_last_online_clock) >> 1;
5413 5411 }
5414 5412 }
5415 5413 ilport->ilport_last_online_clock = ddi_get_lbolt();
5416 5414 ilport->ilport_online_times++;
5417 5415
5418 5416 /*
5419 5417 * Submit online service request
5420 5418 */
5421 5419 ilport->ilport_flags &= ~ILPORT_FORCED_OFFLINE;
5422 5420 ilport->ilport_state = STMF_STATE_ONLINING;
5423 5421 mutex_exit(&stmf_state.stmf_lock);
5424 5422 stmf_svc_queue(cmd, obj, (stmf_state_change_info_t *)arg);
5425 5423 break;
5426 5424
5427 5425 case STMF_CMD_LPORT_ONLINE_COMPLETE:
5428 5426 if (ilport->ilport_state != STMF_STATE_ONLINING) {
5429 5427 ret = STMF_BADSTATE;
5430 5428 goto stmf_ctl_lock_exit;
5431 5429 }
5432 5430 if (((stmf_change_status_t *)arg)->st_completion_status ==
5433 5431 STMF_SUCCESS) {
5434 5432 ilport->ilport_state = STMF_STATE_ONLINE;
5435 5433 mutex_exit(&stmf_state.stmf_lock);
5436 5434 ((stmf_local_port_t *)obj)->lport_ctl(
5437 5435 (stmf_local_port_t *)obj,
5438 5436 STMF_ACK_LPORT_ONLINE_COMPLETE, arg);
5439 5437 mutex_enter(&stmf_state.stmf_lock);
5440 5438 } else {
5441 5439 ilport->ilport_state = STMF_STATE_OFFLINE;
5442 5440 }
5443 5441 ret = STMF_SUCCESS;
5444 5442 goto stmf_ctl_lock_exit;
5445 5443
5446 5444 case STMF_CMD_LPORT_OFFLINE:
5447 5445 switch (ilport->ilport_state) {
5448 5446 case STMF_STATE_ONLINE:
5449 5447 ret = STMF_SUCCESS;
5450 5448 break;
5451 5449 case STMF_STATE_OFFLINE:
5452 5450 case STMF_STATE_OFFLINING:
5453 5451 ret = STMF_ALREADY;
5454 5452 break;
5455 5453 case STMF_STATE_ONLINING:
5456 5454 ret = STMF_BUSY;
5457 5455 break;
5458 5456 default:
5459 5457 ret = STMF_BADSTATE;
5460 5458 break;
5461 5459 }
5462 5460 if (ret != STMF_SUCCESS)
5463 5461 goto stmf_ctl_lock_exit;
5464 5462
5465 5463 ilport->ilport_state = STMF_STATE_OFFLINING;
5466 5464 mutex_exit(&stmf_state.stmf_lock);
5467 5465 stmf_svc_queue(cmd, obj, (stmf_state_change_info_t *)arg);
5468 5466 break;
5469 5467
5470 5468 case STMF_CMD_LPORT_OFFLINE_COMPLETE:
5471 5469 if (ilport->ilport_state != STMF_STATE_OFFLINING) {
5472 5470 ret = STMF_BADSTATE;
5473 5471 goto stmf_ctl_lock_exit;
5474 5472 }
5475 5473 if (((stmf_change_status_t *)arg)->st_completion_status ==
5476 5474 STMF_SUCCESS) {
5477 5475 ilport->ilport_state = STMF_STATE_OFFLINE;
5478 5476 mutex_exit(&stmf_state.stmf_lock);
5479 5477 ((stmf_local_port_t *)obj)->lport_ctl(
5480 5478 (stmf_local_port_t *)obj,
5481 5479 STMF_ACK_LPORT_OFFLINE_COMPLETE, arg);
5482 5480 mutex_enter(&stmf_state.stmf_lock);
5483 5481 } else {
5484 5482 ilport->ilport_state = STMF_STATE_ONLINE;
5485 5483 }
5486 5484 mutex_exit(&stmf_state.stmf_lock);
5487 5485 break;
5488 5486
5489 5487 default:
5490 5488 cmn_err(CE_WARN, "Invalid ctl cmd received %x", cmd);
5491 5489 ret = STMF_INVALID_ARG;
5492 5490 goto stmf_ctl_lock_exit;
5493 5491 }
5494 5492
5495 5493 return (STMF_SUCCESS);
5496 5494
5497 5495 stmf_ctl_lock_exit:;
5498 5496 mutex_exit(&stmf_state.stmf_lock);
5499 5497 return (ret);
5500 5498 }
5501 5499
5502 5500 /* ARGSUSED */
5503 5501 stmf_status_t
5504 5502 stmf_info_impl(uint32_t cmd, void *arg1, void *arg2, uint8_t *buf,
5505 5503 uint32_t *bufsizep)
5506 5504 {
5507 5505 return (STMF_NOT_SUPPORTED);
5508 5506 }
5509 5507
5510 5508 /* ARGSUSED */
5511 5509 stmf_status_t
5512 5510 stmf_info(uint32_t cmd, void *arg1, void *arg2, uint8_t *buf,
5513 5511 uint32_t *bufsizep)
5514 5512 {
5515 5513 uint32_t cl = SI_GET_CLASS(cmd);
5516 5514
5517 5515 if (cl == SI_STMF) {
5518 5516 return (stmf_info_impl(cmd, arg1, arg2, buf, bufsizep));
5519 5517 }
5520 5518 if (cl == SI_LPORT) {
5521 5519 return (((stmf_local_port_t *)arg1)->lport_info(cmd, arg1,
5522 5520 arg2, buf, bufsizep));
5523 5521 } else if (cl == SI_LU) {
5524 5522 return (((stmf_lu_t *)arg1)->lu_info(cmd, arg1, arg2, buf,
5525 5523 bufsizep));
5526 5524 }
5527 5525
5528 5526 return (STMF_NOT_SUPPORTED);
5529 5527 }
5530 5528
5531 5529 /*
5532 5530 * Used by port providers. pwwn is 8 byte wwn, sdid is the devid used by
5533 5531 * stmf to register local ports. The ident should have 20 bytes in buffer
5534 5532 * space to convert the wwn to "wwn.xxxxxxxxxxxxxxxx" string.
5535 5533 */
5536 5534 void
5537 5535 stmf_wwn_to_devid_desc(scsi_devid_desc_t *sdid, uint8_t *wwn,
5538 5536 uint8_t protocol_id)
5539 5537 {
5540 5538 char wwn_str[20+1];
5541 5539
5542 5540 sdid->protocol_id = protocol_id;
5543 5541 sdid->piv = 1;
5544 5542 sdid->code_set = CODE_SET_ASCII;
5545 5543 sdid->association = ID_IS_TARGET_PORT;
5546 5544 sdid->ident_length = 20;
5547 5545 /* Convert wwn value to "wwn.XXXXXXXXXXXXXXXX" format */
5548 5546 (void) snprintf(wwn_str, sizeof (wwn_str),
5549 5547 "wwn.%02X%02X%02X%02X%02X%02X%02X%02X",
5550 5548 wwn[0], wwn[1], wwn[2], wwn[3], wwn[4], wwn[5], wwn[6], wwn[7]);
5551 5549 bcopy(wwn_str, (char *)sdid->ident, 20);
5552 5550 }
5553 5551
5554 5552
5555 5553 stmf_xfer_data_t *
5556 5554 stmf_prepare_tpgs_data(uint8_t ilu_alua)
5557 5555 {
5558 5556 stmf_xfer_data_t *xd;
5559 5557 stmf_i_local_port_t *ilport;
5560 5558 uint8_t *p;
5561 5559 uint32_t sz, asz, nports = 0, nports_standby = 0;
5562 5560
5563 5561 mutex_enter(&stmf_state.stmf_lock);
5564 5562 /* check if any ports are standby and create second group */
5565 5563 for (ilport = stmf_state.stmf_ilportlist; ilport;
5566 5564 ilport = ilport->ilport_next) {
5567 5565 if (ilport->ilport_standby == 1) {
5568 5566 nports_standby++;
5569 5567 } else {
5570 5568 nports++;
5571 5569 }
5572 5570 }
5573 5571
5574 5572 /* The spec only allows for 255 ports to be reported per group */
5575 5573 nports = min(nports, 255);
5576 5574 nports_standby = min(nports_standby, 255);
5577 5575 sz = (nports * 4) + 12;
5578 5576 if (nports_standby && ilu_alua) {
5579 5577 sz += (nports_standby * 4) + 8;
5580 5578 }
5581 5579 asz = sz + sizeof (*xd) - 4;
5582 5580 xd = (stmf_xfer_data_t *)kmem_zalloc(asz, KM_NOSLEEP);
5583 5581 if (xd == NULL) {
5584 5582 mutex_exit(&stmf_state.stmf_lock);
5585 5583 return (NULL);
5586 5584 }
5587 5585 xd->alloc_size = asz;
5588 5586 xd->size_left = sz;
5589 5587
5590 5588 p = xd->buf;
5591 5589
5592 5590 *((uint32_t *)p) = BE_32(sz - 4);
5593 5591 p += 4;
5594 5592 p[0] = 0x80; /* PREF */
5595 5593 p[1] = 5; /* AO_SUP, S_SUP */
5596 5594 if (stmf_state.stmf_alua_node == 1) {
5597 5595 p[3] = 1; /* Group 1 */
5598 5596 } else {
5599 5597 p[3] = 0; /* Group 0 */
5600 5598 }
5601 5599 p[7] = nports & 0xff;
5602 5600 p += 8;
5603 5601 for (ilport = stmf_state.stmf_ilportlist; ilport;
5604 5602 ilport = ilport->ilport_next) {
5605 5603 if (ilport->ilport_standby == 1) {
5606 5604 continue;
5607 5605 }
5608 5606 ((uint16_t *)p)[1] = BE_16(ilport->ilport_rtpid);
5609 5607 p += 4;
5610 5608 }
5611 5609 if (nports_standby && ilu_alua) {
5612 5610 p[0] = 0x02; /* Non PREF, Standby */
5613 5611 p[1] = 5; /* AO_SUP, S_SUP */
5614 5612 if (stmf_state.stmf_alua_node == 1) {
5615 5613 p[3] = 0; /* Group 0 */
5616 5614 } else {
5617 5615 p[3] = 1; /* Group 1 */
5618 5616 }
5619 5617 p[7] = nports_standby & 0xff;
5620 5618 p += 8;
5621 5619 for (ilport = stmf_state.stmf_ilportlist; ilport;
5622 5620 ilport = ilport->ilport_next) {
5623 5621 if (ilport->ilport_standby == 0) {
5624 5622 continue;
5625 5623 }
5626 5624 ((uint16_t *)p)[1] = BE_16(ilport->ilport_rtpid);
5627 5625 p += 4;
5628 5626 }
5629 5627 }
5630 5628
5631 5629 mutex_exit(&stmf_state.stmf_lock);
5632 5630
5633 5631 return (xd);
5634 5632 }
5635 5633
5636 5634 struct scsi_devid_desc *
5637 5635 stmf_scsilib_get_devid_desc(uint16_t rtpid)
5638 5636 {
5639 5637 scsi_devid_desc_t *devid = NULL;
5640 5638 stmf_i_local_port_t *ilport;
5641 5639
5642 5640 mutex_enter(&stmf_state.stmf_lock);
5643 5641
5644 5642 for (ilport = stmf_state.stmf_ilportlist; ilport;
5645 5643 ilport = ilport->ilport_next) {
5646 5644 if (ilport->ilport_rtpid == rtpid) {
5647 5645 scsi_devid_desc_t *id = ilport->ilport_lport->lport_id;
5648 5646 uint32_t id_sz = sizeof (scsi_devid_desc_t) +
5649 5647 id->ident_length;
5650 5648 devid = (scsi_devid_desc_t *)kmem_zalloc(id_sz,
5651 5649 KM_NOSLEEP);
5652 5650 if (devid != NULL) {
5653 5651 bcopy(id, devid, id_sz);
5654 5652 }
5655 5653 break;
5656 5654 }
5657 5655 }
5658 5656
5659 5657 mutex_exit(&stmf_state.stmf_lock);
5660 5658 return (devid);
5661 5659 }
5662 5660
5663 5661 uint16_t
5664 5662 stmf_scsilib_get_lport_rtid(struct scsi_devid_desc *devid)
5665 5663 {
5666 5664 stmf_i_local_port_t *ilport;
5667 5665 scsi_devid_desc_t *id;
5668 5666 uint16_t rtpid = 0;
5669 5667
5670 5668 mutex_enter(&stmf_state.stmf_lock);
5671 5669 for (ilport = stmf_state.stmf_ilportlist; ilport;
5672 5670 ilport = ilport->ilport_next) {
5673 5671 id = ilport->ilport_lport->lport_id;
5674 5672 if ((devid->ident_length == id->ident_length) &&
5675 5673 (memcmp(devid->ident, id->ident, id->ident_length) == 0)) {
5676 5674 rtpid = ilport->ilport_rtpid;
5677 5675 break;
5678 5676 }
5679 5677 }
5680 5678 mutex_exit(&stmf_state.stmf_lock);
5681 5679 return (rtpid);
5682 5680 }
5683 5681
5684 5682 static uint16_t stmf_lu_id_gen_number = 0;
5685 5683
5686 5684 stmf_status_t
5687 5685 stmf_scsilib_uniq_lu_id(uint32_t company_id, scsi_devid_desc_t *lu_id)
5688 5686 {
5689 5687 return (stmf_scsilib_uniq_lu_id2(company_id, 0, lu_id));
5690 5688 }
5691 5689
5692 5690 stmf_status_t
5693 5691 stmf_scsilib_uniq_lu_id2(uint32_t company_id, uint32_t host_id,
5694 5692 scsi_devid_desc_t *lu_id)
5695 5693 {
5696 5694 uint8_t *p;
5697 5695 struct timeval32 timestamp32;
5698 5696 uint32_t *t = (uint32_t *)×tamp32;
5699 5697 struct ether_addr mac;
5700 5698 uint8_t *e = (uint8_t *)&mac;
5701 5699 int hid = (int)host_id;
5702 5700 uint16_t gen_number;
5703 5701
5704 5702 if (company_id == COMPANY_ID_NONE)
5705 5703 company_id = COMPANY_ID_SUN;
5706 5704
5707 5705 if (lu_id->ident_length != 0x10)
5708 5706 return (STMF_INVALID_ARG);
5709 5707
5710 5708 p = (uint8_t *)lu_id;
5711 5709
5712 5710 gen_number = atomic_inc_16_nv(&stmf_lu_id_gen_number);
5713 5711
5714 5712 p[0] = 0xf1; p[1] = 3; p[2] = 0; p[3] = 0x10;
5715 5713 p[4] = ((company_id >> 20) & 0xf) | 0x60;
5716 5714 p[5] = (company_id >> 12) & 0xff;
5717 5715 p[6] = (company_id >> 4) & 0xff;
5718 5716 p[7] = (company_id << 4) & 0xf0;
5719 5717 if (hid == 0 && !localetheraddr((struct ether_addr *)NULL, &mac)) {
5720 5718 hid = BE_32((int)zone_get_hostid(NULL));
5721 5719 }
5722 5720 if (hid != 0) {
5723 5721 e[0] = (hid >> 24) & 0xff;
5724 5722 e[1] = (hid >> 16) & 0xff;
5725 5723 e[2] = (hid >> 8) & 0xff;
5726 5724 e[3] = hid & 0xff;
5727 5725 e[4] = e[5] = 0;
5728 5726 }
5729 5727 bcopy(e, p+8, 6);
5730 5728 uniqtime32(×tamp32);
5731 5729 *t = BE_32(*t);
5732 5730 bcopy(t, p+14, 4);
5733 5731 p[18] = (gen_number >> 8) & 0xff;
5734 5732 p[19] = gen_number & 0xff;
5735 5733
5736 5734 return (STMF_SUCCESS);
5737 5735 }
5738 5736
5739 5737 /*
5740 5738 * saa is sense key, ASC, ASCQ
5741 5739 */
5742 5740 void
5743 5741 stmf_scsilib_send_status(scsi_task_t *task, uint8_t st, uint32_t saa)
5744 5742 {
5745 5743 uint8_t sd[18];
5746 5744 task->task_scsi_status = st;
5747 5745 if (st == 2) {
5748 5746 bzero(sd, 18);
5749 5747 sd[0] = 0x70;
5750 5748 sd[2] = (saa >> 16) & 0xf;
5751 5749 sd[7] = 10;
5752 5750 sd[12] = (saa >> 8) & 0xff;
5753 5751 sd[13] = saa & 0xff;
5754 5752 task->task_sense_data = sd;
5755 5753 task->task_sense_length = 18;
5756 5754 } else {
5757 5755 task->task_sense_data = NULL;
5758 5756 task->task_sense_length = 0;
5759 5757 }
5760 5758 (void) stmf_send_scsi_status(task, STMF_IOF_LU_DONE);
5761 5759 }
5762 5760
5763 5761 uint32_t
5764 5762 stmf_scsilib_prepare_vpd_page83(scsi_task_t *task, uint8_t *page,
5765 5763 uint32_t page_len, uint8_t byte0, uint32_t vpd_mask)
5766 5764 {
5767 5765 uint8_t *p = NULL;
5768 5766 uint8_t small_buf[32];
5769 5767 uint32_t sz = 0;
5770 5768 uint32_t n = 4;
5771 5769 uint32_t m = 0;
5772 5770 uint32_t last_bit = 0;
5773 5771
5774 5772 if (page_len < 4)
5775 5773 return (0);
5776 5774 if (page_len > 65535)
5777 5775 page_len = 65535;
5778 5776
5779 5777 page[0] = byte0;
5780 5778 page[1] = 0x83;
5781 5779
5782 5780 /* CONSTCOND */
5783 5781 while (1) {
5784 5782 m += sz;
5785 5783 if (sz && (page_len > n)) {
5786 5784 uint32_t copysz;
5787 5785 copysz = page_len > (n + sz) ? sz : page_len - n;
5788 5786 bcopy(p, page + n, copysz);
5789 5787 n += copysz;
5790 5788 }
5791 5789 vpd_mask &= ~last_bit;
5792 5790 if (vpd_mask == 0)
5793 5791 break;
5794 5792
5795 5793 if (vpd_mask & STMF_VPD_LU_ID) {
5796 5794 last_bit = STMF_VPD_LU_ID;
5797 5795 sz = task->task_lu->lu_id->ident_length + 4;
5798 5796 p = (uint8_t *)task->task_lu->lu_id;
5799 5797 continue;
5800 5798 } else if (vpd_mask & STMF_VPD_TARGET_ID) {
5801 5799 last_bit = STMF_VPD_TARGET_ID;
5802 5800 sz = task->task_lport->lport_id->ident_length + 4;
5803 5801 p = (uint8_t *)task->task_lport->lport_id;
5804 5802 continue;
5805 5803 } else if (vpd_mask & STMF_VPD_TP_GROUP) {
5806 5804 stmf_i_local_port_t *ilport;
5807 5805 last_bit = STMF_VPD_TP_GROUP;
5808 5806 p = small_buf;
5809 5807 bzero(p, 8);
5810 5808 p[0] = 1;
5811 5809 p[1] = 0x15;
5812 5810 p[3] = 4;
5813 5811 ilport = (stmf_i_local_port_t *)
5814 5812 task->task_lport->lport_stmf_private;
5815 5813 /*
5816 5814 * If we're in alua mode, group 1 contains all alua
5817 5815 * participating ports and all standby ports
5818 5816 * > 255. Otherwise, if we're in alua mode, any local
5819 5817 * ports (non standby/pppt) are also in group 1 if the
5820 5818 * alua node is 1. Otherwise the group is 0.
5821 5819 */
5822 5820 if ((stmf_state.stmf_alua_state &&
5823 5821 (ilport->ilport_alua || ilport->ilport_standby) &&
5824 5822 ilport->ilport_rtpid > 255) ||
5825 5823 (stmf_state.stmf_alua_node == 1 &&
5826 5824 ilport->ilport_standby != 1)) {
5827 5825 p[7] = 1; /* Group 1 */
5828 5826 }
5829 5827 sz = 8;
5830 5828 continue;
5831 5829 } else if (vpd_mask & STMF_VPD_RELATIVE_TP_ID) {
5832 5830 stmf_i_local_port_t *ilport;
5833 5831
5834 5832 last_bit = STMF_VPD_RELATIVE_TP_ID;
5835 5833 p = small_buf;
5836 5834 bzero(p, 8);
5837 5835 p[0] = 1;
5838 5836 p[1] = 0x14;
5839 5837 p[3] = 4;
5840 5838 ilport = (stmf_i_local_port_t *)
5841 5839 task->task_lport->lport_stmf_private;
5842 5840 p[6] = (ilport->ilport_rtpid >> 8) & 0xff;
5843 5841 p[7] = ilport->ilport_rtpid & 0xff;
5844 5842 sz = 8;
5845 5843 continue;
5846 5844 } else {
5847 5845 cmn_err(CE_WARN, "Invalid vpd_mask");
5848 5846 break;
5849 5847 }
5850 5848 }
5851 5849
5852 5850 page[2] = (m >> 8) & 0xff;
5853 5851 page[3] = m & 0xff;
5854 5852
5855 5853 return (n);
5856 5854 }
5857 5855
5858 5856 void
5859 5857 stmf_scsilib_handle_report_tpgs(scsi_task_t *task, stmf_data_buf_t *dbuf)
5860 5858 {
5861 5859 stmf_i_scsi_task_t *itask =
5862 5860 (stmf_i_scsi_task_t *)task->task_stmf_private;
5863 5861 stmf_i_lu_t *ilu =
5864 5862 (stmf_i_lu_t *)task->task_lu->lu_stmf_private;
5865 5863 stmf_xfer_data_t *xd;
5866 5864 uint32_t sz, minsz;
5867 5865
5868 5866 itask->itask_flags |= ITASK_DEFAULT_HANDLING;
5869 5867 task->task_cmd_xfer_length =
5870 5868 ((((uint32_t)task->task_cdb[6]) << 24) |
5871 5869 (((uint32_t)task->task_cdb[7]) << 16) |
5872 5870 (((uint32_t)task->task_cdb[8]) << 8) |
5873 5871 ((uint32_t)task->task_cdb[9]));
5874 5872
5875 5873 if (task->task_additional_flags &
5876 5874 TASK_AF_NO_EXPECTED_XFER_LENGTH) {
5877 5875 task->task_expected_xfer_length =
5878 5876 task->task_cmd_xfer_length;
5879 5877 }
5880 5878
5881 5879 if (task->task_cmd_xfer_length == 0) {
5882 5880 stmf_scsilib_send_status(task, STATUS_GOOD, 0);
5883 5881 return;
5884 5882 }
5885 5883 if (task->task_cmd_xfer_length < 4) {
5886 5884 stmf_scsilib_send_status(task, STATUS_CHECK,
5887 5885 STMF_SAA_INVALID_FIELD_IN_CDB);
5888 5886 return;
5889 5887 }
5890 5888
5891 5889 sz = min(task->task_expected_xfer_length,
5892 5890 task->task_cmd_xfer_length);
5893 5891
5894 5892 xd = stmf_prepare_tpgs_data(ilu->ilu_alua);
5895 5893
5896 5894 if (xd == NULL) {
5897 5895 stmf_abort(STMF_QUEUE_TASK_ABORT, task,
5898 5896 STMF_ALLOC_FAILURE, NULL);
5899 5897 return;
5900 5898 }
5901 5899
5902 5900 sz = min(sz, xd->size_left);
5903 5901 xd->size_left = sz;
5904 5902 minsz = min(512, sz);
5905 5903
5906 5904 if (dbuf == NULL)
5907 5905 dbuf = stmf_alloc_dbuf(task, sz, &minsz, 0);
5908 5906 if (dbuf == NULL) {
5909 5907 kmem_free(xd, xd->alloc_size);
5910 5908 stmf_abort(STMF_QUEUE_TASK_ABORT, task,
5911 5909 STMF_ALLOC_FAILURE, NULL);
5912 5910 return;
5913 5911 }
5914 5912 dbuf->db_lu_private = xd;
5915 5913 stmf_xd_to_dbuf(dbuf, 1);
5916 5914
5917 5915 dbuf->db_flags = DB_DIRECTION_TO_RPORT;
5918 5916 (void) stmf_xfer_data(task, dbuf, 0);
5919 5917
5920 5918 }
5921 5919
5922 5920 void
5923 5921 stmf_scsilib_handle_task_mgmt(scsi_task_t *task)
5924 5922 {
5925 5923
5926 5924 switch (task->task_mgmt_function) {
5927 5925 /*
5928 5926 * For now we will abort all I/Os on the LU in case of ABORT_TASK_SET
5929 5927 * and ABORT_TASK. But unlike LUN_RESET we will not reset LU state
5930 5928 * in these cases. This needs to be changed to abort only the required
5931 5929 * set.
5932 5930 */
5933 5931 case TM_ABORT_TASK:
5934 5932 case TM_ABORT_TASK_SET:
5935 5933 case TM_CLEAR_TASK_SET:
5936 5934 case TM_LUN_RESET:
5937 5935 stmf_handle_lun_reset(task);
5938 5936 /* issue the reset to the proxy node as well */
5939 5937 if (stmf_state.stmf_alua_state == 1) {
5940 5938 (void) stmf_proxy_scsi_cmd(task, NULL);
5941 5939 }
5942 5940 return;
5943 5941 case TM_TARGET_RESET:
5944 5942 case TM_TARGET_COLD_RESET:
5945 5943 case TM_TARGET_WARM_RESET:
5946 5944 stmf_handle_target_reset(task);
5947 5945 return;
5948 5946 default:
5949 5947 /* We dont support this task mgmt function */
5950 5948 stmf_scsilib_send_status(task, STATUS_CHECK,
5951 5949 STMF_SAA_INVALID_FIELD_IN_CMD_IU);
5952 5950 return;
5953 5951 }
5954 5952 }
5955 5953
5956 5954 void
5957 5955 stmf_handle_lun_reset(scsi_task_t *task)
5958 5956 {
5959 5957 stmf_i_scsi_task_t *itask;
5960 5958 stmf_i_lu_t *ilu;
5961 5959
5962 5960 itask = (stmf_i_scsi_task_t *)task->task_stmf_private;
5963 5961 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private;
5964 5962
5965 5963 /*
5966 5964 * To sync with target reset, grab this lock. The LU is not going
5967 5965 * anywhere as there is atleast one task pending (this task).
5968 5966 */
5969 5967 mutex_enter(&stmf_state.stmf_lock);
5970 5968
5971 5969 if (ilu->ilu_flags & ILU_RESET_ACTIVE) {
5972 5970 mutex_exit(&stmf_state.stmf_lock);
5973 5971 stmf_scsilib_send_status(task, STATUS_CHECK,
5974 5972 STMF_SAA_OPERATION_IN_PROGRESS);
5975 5973 return;
5976 5974 }
5977 5975 atomic_or_32(&ilu->ilu_flags, ILU_RESET_ACTIVE);
5978 5976 mutex_exit(&stmf_state.stmf_lock);
5979 5977
5980 5978 /*
5981 5979 * Mark this task as the one causing LU reset so that we know who
5982 5980 * was responsible for setting the ILU_RESET_ACTIVE. In case this
5983 5981 * task itself gets aborted, we will clear ILU_RESET_ACTIVE.
5984 5982 */
5985 5983 itask->itask_flags |= ITASK_DEFAULT_HANDLING | ITASK_CAUSING_LU_RESET;
5986 5984
5987 5985 /* Initiatiate abort on all commands on this LU except this one */
5988 5986 stmf_abort(STMF_QUEUE_ABORT_LU, task, STMF_ABORTED, task->task_lu);
5989 5987
5990 5988 /* Start polling on this task */
5991 5989 if (stmf_task_poll_lu(task, ITASK_DEFAULT_POLL_TIMEOUT)
5992 5990 != STMF_SUCCESS) {
5993 5991 stmf_abort(STMF_QUEUE_TASK_ABORT, task, STMF_ALLOC_FAILURE,
5994 5992 NULL);
5995 5993 return;
5996 5994 }
5997 5995 }
5998 5996
5999 5997 void
6000 5998 stmf_handle_target_reset(scsi_task_t *task)
6001 5999 {
6002 6000 stmf_i_scsi_task_t *itask;
6003 6001 stmf_i_lu_t *ilu;
6004 6002 stmf_i_scsi_session_t *iss;
6005 6003 stmf_lun_map_t *lm;
6006 6004 stmf_lun_map_ent_t *lm_ent;
6007 6005 int i, lf;
6008 6006
6009 6007 itask = (stmf_i_scsi_task_t *)task->task_stmf_private;
6010 6008 iss = (stmf_i_scsi_session_t *)task->task_session->ss_stmf_private;
6011 6009 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private;
6012 6010
6013 6011 /*
6014 6012 * To sync with LUN reset, grab this lock. The session is not going
6015 6013 * anywhere as there is atleast one task pending (this task).
6016 6014 */
6017 6015 mutex_enter(&stmf_state.stmf_lock);
6018 6016
6019 6017 /* Grab the session lock as a writer to prevent any changes in it */
6020 6018 rw_enter(iss->iss_lockp, RW_WRITER);
6021 6019
6022 6020 if (iss->iss_flags & ISS_RESET_ACTIVE) {
6023 6021 rw_exit(iss->iss_lockp);
6024 6022 mutex_exit(&stmf_state.stmf_lock);
6025 6023 stmf_scsilib_send_status(task, STATUS_CHECK,
6026 6024 STMF_SAA_OPERATION_IN_PROGRESS);
6027 6025 return;
6028 6026 }
6029 6027 atomic_or_32(&iss->iss_flags, ISS_RESET_ACTIVE);
6030 6028
6031 6029 /*
6032 6030 * Now go through each LUN in this session and make sure all of them
6033 6031 * can be reset.
6034 6032 */
6035 6033 lm = iss->iss_sm;
6036 6034 for (i = 0, lf = 0; i < lm->lm_nentries; i++) {
6037 6035 if (lm->lm_plus[i] == NULL)
6038 6036 continue;
6039 6037 lf++;
6040 6038 lm_ent = (stmf_lun_map_ent_t *)lm->lm_plus[i];
6041 6039 ilu = (stmf_i_lu_t *)(lm_ent->ent_lu->lu_stmf_private);
6042 6040 if (ilu->ilu_flags & ILU_RESET_ACTIVE) {
6043 6041 atomic_and_32(&iss->iss_flags, ~ISS_RESET_ACTIVE);
6044 6042 rw_exit(iss->iss_lockp);
6045 6043 mutex_exit(&stmf_state.stmf_lock);
6046 6044 stmf_scsilib_send_status(task, STATUS_CHECK,
6047 6045 STMF_SAA_OPERATION_IN_PROGRESS);
6048 6046 return;
6049 6047 }
6050 6048 }
6051 6049 if (lf == 0) {
6052 6050 /* No luns in this session */
6053 6051 atomic_and_32(&iss->iss_flags, ~ISS_RESET_ACTIVE);
6054 6052 rw_exit(iss->iss_lockp);
6055 6053 mutex_exit(&stmf_state.stmf_lock);
6056 6054 stmf_scsilib_send_status(task, STATUS_GOOD, 0);
6057 6055 return;
6058 6056 }
6059 6057
6060 6058 /* ok, start the damage */
6061 6059 itask->itask_flags |= ITASK_DEFAULT_HANDLING |
6062 6060 ITASK_CAUSING_TARGET_RESET;
6063 6061 for (i = 0; i < lm->lm_nentries; i++) {
6064 6062 if (lm->lm_plus[i] == NULL)
6065 6063 continue;
6066 6064 lm_ent = (stmf_lun_map_ent_t *)lm->lm_plus[i];
6067 6065 ilu = (stmf_i_lu_t *)(lm_ent->ent_lu->lu_stmf_private);
6068 6066 atomic_or_32(&ilu->ilu_flags, ILU_RESET_ACTIVE);
6069 6067 }
6070 6068
6071 6069 for (i = 0; i < lm->lm_nentries; i++) {
6072 6070 if (lm->lm_plus[i] == NULL)
6073 6071 continue;
6074 6072 lm_ent = (stmf_lun_map_ent_t *)lm->lm_plus[i];
6075 6073 stmf_abort(STMF_QUEUE_ABORT_LU, task, STMF_ABORTED,
6076 6074 lm_ent->ent_lu);
6077 6075 }
6078 6076
6079 6077 rw_exit(iss->iss_lockp);
6080 6078 mutex_exit(&stmf_state.stmf_lock);
6081 6079
6082 6080 /* Start polling on this task */
6083 6081 if (stmf_task_poll_lu(task, ITASK_DEFAULT_POLL_TIMEOUT)
6084 6082 != STMF_SUCCESS) {
6085 6083 stmf_abort(STMF_QUEUE_TASK_ABORT, task, STMF_ALLOC_FAILURE,
6086 6084 NULL);
6087 6085 return;
6088 6086 }
6089 6087 }
6090 6088
6091 6089 int
6092 6090 stmf_handle_cmd_during_ic(stmf_i_scsi_task_t *itask)
6093 6091 {
6094 6092 scsi_task_t *task = itask->itask_task;
6095 6093 stmf_i_scsi_session_t *iss = (stmf_i_scsi_session_t *)
6096 6094 task->task_session->ss_stmf_private;
6097 6095
6098 6096 rw_enter(iss->iss_lockp, RW_WRITER);
6099 6097 if (((iss->iss_flags & ISS_LUN_INVENTORY_CHANGED) == 0) ||
6100 6098 (task->task_cdb[0] == SCMD_INQUIRY)) {
6101 6099 rw_exit(iss->iss_lockp);
6102 6100 return (0);
6103 6101 }
6104 6102 atomic_and_32(&iss->iss_flags,
6105 6103 ~(ISS_LUN_INVENTORY_CHANGED | ISS_GOT_INITIAL_LUNS));
6106 6104 rw_exit(iss->iss_lockp);
6107 6105
6108 6106 if (task->task_cdb[0] == SCMD_REPORT_LUNS) {
6109 6107 return (0);
6110 6108 }
6111 6109 stmf_scsilib_send_status(task, STATUS_CHECK,
6112 6110 STMF_SAA_REPORT_LUN_DATA_HAS_CHANGED);
6113 6111 return (1);
6114 6112 }
6115 6113
6116 6114 void
6117 6115 stmf_worker_init()
6118 6116 {
6119 6117 uint32_t i;
6120 6118
6121 6119 /* Make local copy of global tunables */
6122 6120 stmf_i_max_nworkers = stmf_max_nworkers;
6123 6121 stmf_i_min_nworkers = stmf_min_nworkers;
6124 6122
6125 6123 ASSERT(stmf_workers == NULL);
6126 6124 if (stmf_i_min_nworkers < 4) {
6127 6125 stmf_i_min_nworkers = 4;
6128 6126 }
6129 6127 if (stmf_i_max_nworkers < stmf_i_min_nworkers) {
6130 6128 stmf_i_max_nworkers = stmf_i_min_nworkers;
6131 6129 }
6132 6130 stmf_workers = (stmf_worker_t *)kmem_zalloc(
6133 6131 sizeof (stmf_worker_t) * stmf_i_max_nworkers, KM_SLEEP);
6134 6132 for (i = 0; i < stmf_i_max_nworkers; i++) {
6135 6133 stmf_worker_t *w = &stmf_workers[i];
6136 6134 mutex_init(&w->worker_lock, NULL, MUTEX_DRIVER, NULL);
6137 6135 cv_init(&w->worker_cv, NULL, CV_DRIVER, NULL);
6138 6136 }
6139 6137 stmf_worker_mgmt_delay = drv_usectohz(20 * 1000);
6140 6138 stmf_workers_state = STMF_WORKERS_ENABLED;
6141 6139
6142 6140 /* Workers will be started by stmf_worker_mgmt() */
6143 6141
6144 6142 /* Lets wait for atleast one worker to start */
6145 6143 while (stmf_nworkers_cur == 0)
6146 6144 delay(drv_usectohz(20 * 1000));
6147 6145 stmf_worker_mgmt_delay = drv_usectohz(3 * 1000 * 1000);
6148 6146 }
6149 6147
6150 6148 stmf_status_t
6151 6149 stmf_worker_fini()
6152 6150 {
6153 6151 int i;
6154 6152 clock_t sb;
6155 6153
6156 6154 if (stmf_workers_state == STMF_WORKERS_DISABLED)
6157 6155 return (STMF_SUCCESS);
6158 6156 ASSERT(stmf_workers);
6159 6157 stmf_workers_state = STMF_WORKERS_DISABLED;
6160 6158 stmf_worker_mgmt_delay = drv_usectohz(20 * 1000);
6161 6159 cv_signal(&stmf_state.stmf_cv);
6162 6160
6163 6161 sb = ddi_get_lbolt() + drv_usectohz(10 * 1000 * 1000);
6164 6162 /* Wait for all the threads to die */
6165 6163 while (stmf_nworkers_cur != 0) {
6166 6164 if (ddi_get_lbolt() > sb) {
6167 6165 stmf_workers_state = STMF_WORKERS_ENABLED;
6168 6166 return (STMF_BUSY);
6169 6167 }
6170 6168 delay(drv_usectohz(100 * 1000));
6171 6169 }
6172 6170 for (i = 0; i < stmf_i_max_nworkers; i++) {
6173 6171 stmf_worker_t *w = &stmf_workers[i];
6174 6172 mutex_destroy(&w->worker_lock);
6175 6173 cv_destroy(&w->worker_cv);
6176 6174 }
6177 6175 kmem_free(stmf_workers, sizeof (stmf_worker_t) * stmf_i_max_nworkers);
6178 6176 stmf_workers = NULL;
6179 6177
6180 6178 return (STMF_SUCCESS);
6181 6179 }
6182 6180
6183 6181 void
6184 6182 stmf_worker_task(void *arg)
6185 6183 {
6186 6184 stmf_worker_t *w;
6187 6185 stmf_i_scsi_session_t *iss;
6188 6186 scsi_task_t *task;
6189 6187 stmf_i_scsi_task_t *itask;
6190 6188 stmf_data_buf_t *dbuf;
6191 6189 stmf_lu_t *lu;
6192 6190 clock_t wait_timer = 0;
6193 6191 clock_t wait_ticks, wait_delta = 0;
6194 6192 uint32_t old, new;
6195 6193 uint8_t curcmd;
6196 6194 uint8_t abort_free;
6197 6195 uint8_t wait_queue;
6198 6196 uint8_t dec_qdepth;
6199 6197
6200 6198 w = (stmf_worker_t *)arg;
6201 6199 wait_ticks = drv_usectohz(10000);
6202 6200
6203 6201 DTRACE_PROBE1(worker__create, stmf_worker_t, w);
6204 6202 mutex_enter(&w->worker_lock);
6205 6203 w->worker_flags |= STMF_WORKER_STARTED | STMF_WORKER_ACTIVE;
6206 6204 stmf_worker_loop:;
6207 6205 if ((w->worker_ref_count == 0) &&
6208 6206 (w->worker_flags & STMF_WORKER_TERMINATE)) {
6209 6207 w->worker_flags &= ~(STMF_WORKER_STARTED |
6210 6208 STMF_WORKER_ACTIVE | STMF_WORKER_TERMINATE);
6211 6209 w->worker_tid = NULL;
6212 6210 mutex_exit(&w->worker_lock);
6213 6211 DTRACE_PROBE1(worker__destroy, stmf_worker_t, w);
6214 6212 thread_exit();
6215 6213 }
6216 6214 /* CONSTCOND */
6217 6215 while (1) {
6218 6216 dec_qdepth = 0;
6219 6217 if (wait_timer && (ddi_get_lbolt() >= wait_timer)) {
6220 6218 wait_timer = 0;
6221 6219 wait_delta = 0;
6222 6220 if (w->worker_wait_head) {
6223 6221 ASSERT(w->worker_wait_tail);
6224 6222 if (w->worker_task_head == NULL)
6225 6223 w->worker_task_head =
6226 6224 w->worker_wait_head;
6227 6225 else
6228 6226 w->worker_task_tail->itask_worker_next =
6229 6227 w->worker_wait_head;
6230 6228 w->worker_task_tail = w->worker_wait_tail;
6231 6229 w->worker_wait_head = w->worker_wait_tail =
6232 6230 NULL;
6233 6231 }
6234 6232 }
6235 6233 if ((itask = w->worker_task_head) == NULL) {
6236 6234 break;
6237 6235 }
6238 6236 task = itask->itask_task;
6239 6237 DTRACE_PROBE2(worker__active, stmf_worker_t, w,
6240 6238 scsi_task_t *, task);
6241 6239 w->worker_task_head = itask->itask_worker_next;
6242 6240 if (w->worker_task_head == NULL)
6243 6241 w->worker_task_tail = NULL;
6244 6242
6245 6243 wait_queue = 0;
6246 6244 abort_free = 0;
6247 6245 if (itask->itask_ncmds > 0) {
6248 6246 curcmd = itask->itask_cmd_stack[itask->itask_ncmds - 1];
6249 6247 } else {
6250 6248 ASSERT(itask->itask_flags & ITASK_BEING_ABORTED);
6251 6249 }
6252 6250 do {
6253 6251 old = itask->itask_flags;
6254 6252 if (old & ITASK_BEING_ABORTED) {
6255 6253 itask->itask_ncmds = 1;
6256 6254 curcmd = itask->itask_cmd_stack[0] =
6257 6255 ITASK_CMD_ABORT;
6258 6256 goto out_itask_flag_loop;
6259 6257 } else if ((curcmd & ITASK_CMD_MASK) ==
6260 6258 ITASK_CMD_NEW_TASK) {
6261 6259 /*
6262 6260 * set ITASK_KSTAT_IN_RUNQ, this flag
6263 6261 * will not reset until task completed
6264 6262 */
6265 6263 new = old | ITASK_KNOWN_TO_LU |
6266 6264 ITASK_KSTAT_IN_RUNQ;
6267 6265 } else {
6268 6266 goto out_itask_flag_loop;
6269 6267 }
6270 6268 } while (atomic_cas_32(&itask->itask_flags, old, new) != old);
6271 6269
6272 6270 out_itask_flag_loop:
6273 6271
6274 6272 /*
6275 6273 * Decide if this task needs to go to a queue and/or if
6276 6274 * we can decrement the itask_cmd_stack.
6277 6275 */
6278 6276 if (curcmd == ITASK_CMD_ABORT) {
6279 6277 if (itask->itask_flags & (ITASK_KNOWN_TO_LU |
6280 6278 ITASK_KNOWN_TO_TGT_PORT)) {
6281 6279 wait_queue = 1;
6282 6280 } else {
6283 6281 abort_free = 1;
6284 6282 }
6285 6283 } else if ((curcmd & ITASK_CMD_POLL) &&
6286 6284 (itask->itask_poll_timeout > ddi_get_lbolt())) {
6287 6285 wait_queue = 1;
6288 6286 }
6289 6287
6290 6288 if (wait_queue) {
6291 6289 itask->itask_worker_next = NULL;
6292 6290 if (w->worker_wait_tail) {
6293 6291 w->worker_wait_tail->itask_worker_next = itask;
6294 6292 } else {
6295 6293 w->worker_wait_head = itask;
6296 6294 }
6297 6295 w->worker_wait_tail = itask;
6298 6296 if (wait_timer == 0) {
6299 6297 wait_timer = ddi_get_lbolt() + wait_ticks;
6300 6298 wait_delta = wait_ticks;
6301 6299 }
6302 6300 } else if ((--(itask->itask_ncmds)) != 0) {
6303 6301 itask->itask_worker_next = NULL;
6304 6302 if (w->worker_task_tail) {
6305 6303 w->worker_task_tail->itask_worker_next = itask;
6306 6304 } else {
6307 6305 w->worker_task_head = itask;
6308 6306 }
6309 6307 w->worker_task_tail = itask;
6310 6308 } else {
6311 6309 atomic_and_32(&itask->itask_flags,
6312 6310 ~ITASK_IN_WORKER_QUEUE);
6313 6311 /*
6314 6312 * This is where the queue depth should go down by
6315 6313 * one but we delay that on purpose to account for
6316 6314 * the call into the provider. The actual decrement
6317 6315 * happens after the worker has done its job.
6318 6316 */
6319 6317 dec_qdepth = 1;
6320 6318 itask->itask_waitq_time +=
6321 6319 gethrtime() - itask->itask_waitq_enter_timestamp;
6322 6320 }
6323 6321
6324 6322 /* We made it here means we are going to call LU */
6325 6323 if ((itask->itask_flags & ITASK_DEFAULT_HANDLING) == 0)
6326 6324 lu = task->task_lu;
6327 6325 else
6328 6326 lu = dlun0;
6329 6327 dbuf = itask->itask_dbufs[ITASK_CMD_BUF_NDX(curcmd)];
6330 6328 mutex_exit(&w->worker_lock);
6331 6329 curcmd &= ITASK_CMD_MASK;
6332 6330 stmf_task_audit(itask, TE_PROCESS_CMD, curcmd, dbuf);
6333 6331 switch (curcmd) {
6334 6332 case ITASK_CMD_NEW_TASK:
6335 6333 iss = (stmf_i_scsi_session_t *)
6336 6334 task->task_session->ss_stmf_private;
6337 6335 stmf_itl_lu_new_task(itask);
6338 6336 if (iss->iss_flags & ISS_LUN_INVENTORY_CHANGED) {
6339 6337 if (stmf_handle_cmd_during_ic(itask))
6340 6338 break;
6341 6339 }
6342 6340 #ifdef DEBUG
6343 6341 if (stmf_drop_task_counter > 0) {
6344 6342 if (atomic_dec_32_nv(&stmf_drop_task_counter)
6345 6343 == 1)
6346 6344 break;
6347 6345 }
6348 6346 #endif
6349 6347 DTRACE_PROBE1(scsi__task__start, scsi_task_t *, task);
6350 6348 lu->lu_new_task(task, dbuf);
6351 6349 break;
6352 6350 case ITASK_CMD_DATA_XFER_DONE:
6353 6351 lu->lu_dbuf_xfer_done(task, dbuf);
6354 6352 break;
6355 6353 case ITASK_CMD_STATUS_DONE:
6356 6354 lu->lu_send_status_done(task);
6357 6355 break;
6358 6356 case ITASK_CMD_ABORT:
6359 6357 if (abort_free) {
6360 6358 stmf_task_free(task);
6361 6359 } else {
6362 6360 stmf_do_task_abort(task);
6363 6361 }
6364 6362 break;
6365 6363 case ITASK_CMD_POLL_LU:
6366 6364 if (!wait_queue) {
6367 6365 lu->lu_task_poll(task);
6368 6366 }
6369 6367 break;
6370 6368 case ITASK_CMD_POLL_LPORT:
6371 6369 if (!wait_queue)
6372 6370 task->task_lport->lport_task_poll(task);
6373 6371 break;
6374 6372 case ITASK_CMD_SEND_STATUS:
6375 6373 /* case ITASK_CMD_XFER_DATA: */
6376 6374 break;
6377 6375 }
6378 6376 mutex_enter(&w->worker_lock);
6379 6377 if (dec_qdepth) {
6380 6378 w->worker_queue_depth--;
6381 6379 }
6382 6380 }
6383 6381 if ((w->worker_flags & STMF_WORKER_TERMINATE) && (wait_timer == 0)) {
6384 6382 if (w->worker_ref_count == 0)
6385 6383 goto stmf_worker_loop;
6386 6384 else {
6387 6385 wait_timer = ddi_get_lbolt() + 1;
6388 6386 wait_delta = 1;
6389 6387 }
6390 6388 }
6391 6389 w->worker_flags &= ~STMF_WORKER_ACTIVE;
6392 6390 if (wait_timer) {
6393 6391 DTRACE_PROBE1(worker__timed__sleep, stmf_worker_t, w);
6394 6392 (void) cv_reltimedwait(&w->worker_cv, &w->worker_lock,
6395 6393 wait_delta, TR_CLOCK_TICK);
6396 6394 } else {
6397 6395 DTRACE_PROBE1(worker__sleep, stmf_worker_t, w);
6398 6396 cv_wait(&w->worker_cv, &w->worker_lock);
6399 6397 }
6400 6398 DTRACE_PROBE1(worker__wakeup, stmf_worker_t, w);
6401 6399 w->worker_flags |= STMF_WORKER_ACTIVE;
6402 6400 goto stmf_worker_loop;
6403 6401 }
6404 6402
6405 6403 void
6406 6404 stmf_worker_mgmt()
6407 6405 {
6408 6406 int i;
6409 6407 int workers_needed;
6410 6408 uint32_t qd;
6411 6409 clock_t tps, d = 0;
6412 6410 uint32_t cur_max_ntasks = 0;
6413 6411 stmf_worker_t *w;
6414 6412
6415 6413 /* Check if we are trying to increase the # of threads */
6416 6414 for (i = stmf_nworkers_cur; i < stmf_nworkers_needed; i++) {
6417 6415 if (stmf_workers[i].worker_flags & STMF_WORKER_STARTED) {
6418 6416 stmf_nworkers_cur++;
6419 6417 stmf_nworkers_accepting_cmds++;
6420 6418 } else {
6421 6419 /* Wait for transition to complete */
6422 6420 return;
6423 6421 }
6424 6422 }
6425 6423 /* Check if we are trying to decrease the # of workers */
6426 6424 for (i = (stmf_nworkers_cur - 1); i >= stmf_nworkers_needed; i--) {
6427 6425 if ((stmf_workers[i].worker_flags & STMF_WORKER_STARTED) == 0) {
6428 6426 stmf_nworkers_cur--;
6429 6427 /*
6430 6428 * stmf_nworkers_accepting_cmds has already been
6431 6429 * updated by the request to reduce the # of workers.
6432 6430 */
6433 6431 } else {
6434 6432 /* Wait for transition to complete */
6435 6433 return;
6436 6434 }
6437 6435 }
6438 6436 /* Check if we are being asked to quit */
6439 6437 if (stmf_workers_state != STMF_WORKERS_ENABLED) {
6440 6438 if (stmf_nworkers_cur) {
6441 6439 workers_needed = 0;
6442 6440 goto worker_mgmt_trigger_change;
6443 6441 }
6444 6442 return;
6445 6443 }
6446 6444 /* Check if we are starting */
6447 6445 if (stmf_nworkers_cur < stmf_i_min_nworkers) {
6448 6446 workers_needed = stmf_i_min_nworkers;
6449 6447 goto worker_mgmt_trigger_change;
6450 6448 }
6451 6449
6452 6450 tps = drv_usectohz(1 * 1000 * 1000);
6453 6451 if ((stmf_wm_last != 0) &&
6454 6452 ((d = ddi_get_lbolt() - stmf_wm_last) > tps)) {
6455 6453 qd = 0;
6456 6454 for (i = 0; i < stmf_nworkers_accepting_cmds; i++) {
6457 6455 qd += stmf_workers[i].worker_max_qdepth_pu;
6458 6456 stmf_workers[i].worker_max_qdepth_pu = 0;
6459 6457 if (stmf_workers[i].worker_max_sys_qdepth_pu >
6460 6458 cur_max_ntasks) {
6461 6459 cur_max_ntasks =
6462 6460 stmf_workers[i].worker_max_sys_qdepth_pu;
6463 6461 }
6464 6462 stmf_workers[i].worker_max_sys_qdepth_pu = 0;
6465 6463 }
6466 6464 }
6467 6465 stmf_wm_last = ddi_get_lbolt();
6468 6466 if (d <= tps) {
6469 6467 /* still ramping up */
6470 6468 return;
6471 6469 }
6472 6470 /* max qdepth cannot be more than max tasks */
6473 6471 if (qd > cur_max_ntasks)
6474 6472 qd = cur_max_ntasks;
6475 6473
6476 6474 /* See if we have more workers */
6477 6475 if (qd < stmf_nworkers_accepting_cmds) {
6478 6476 /*
6479 6477 * Since we dont reduce the worker count right away, monitor
6480 6478 * the highest load during the scale_down_delay.
6481 6479 */
6482 6480 if (qd > stmf_worker_scale_down_qd)
6483 6481 stmf_worker_scale_down_qd = qd;
6484 6482 if (stmf_worker_scale_down_timer == 0) {
6485 6483 stmf_worker_scale_down_timer = ddi_get_lbolt() +
6486 6484 drv_usectohz(stmf_worker_scale_down_delay *
6487 6485 1000 * 1000);
6488 6486 return;
6489 6487 }
6490 6488 if (ddi_get_lbolt() < stmf_worker_scale_down_timer) {
6491 6489 return;
6492 6490 }
6493 6491 /* Its time to reduce the workers */
6494 6492 if (stmf_worker_scale_down_qd < stmf_i_min_nworkers)
6495 6493 stmf_worker_scale_down_qd = stmf_i_min_nworkers;
6496 6494 if (stmf_worker_scale_down_qd > stmf_i_max_nworkers)
6497 6495 stmf_worker_scale_down_qd = stmf_i_max_nworkers;
6498 6496 if (stmf_worker_scale_down_qd == stmf_nworkers_cur)
6499 6497 return;
6500 6498 workers_needed = stmf_worker_scale_down_qd;
6501 6499 stmf_worker_scale_down_qd = 0;
6502 6500 goto worker_mgmt_trigger_change;
6503 6501 }
6504 6502 stmf_worker_scale_down_qd = 0;
6505 6503 stmf_worker_scale_down_timer = 0;
6506 6504 if (qd > stmf_i_max_nworkers)
6507 6505 qd = stmf_i_max_nworkers;
6508 6506 if (qd < stmf_i_min_nworkers)
6509 6507 qd = stmf_i_min_nworkers;
6510 6508 if (qd == stmf_nworkers_cur)
6511 6509 return;
6512 6510 workers_needed = qd;
6513 6511 goto worker_mgmt_trigger_change;
6514 6512
6515 6513 /* NOTREACHED */
6516 6514 return;
6517 6515
6518 6516 worker_mgmt_trigger_change:
6519 6517 ASSERT(workers_needed != stmf_nworkers_cur);
6520 6518 if (workers_needed > stmf_nworkers_cur) {
6521 6519 stmf_nworkers_needed = workers_needed;
6522 6520 for (i = stmf_nworkers_cur; i < workers_needed; i++) {
6523 6521 w = &stmf_workers[i];
6524 6522 w->worker_tid = thread_create(NULL, 0, stmf_worker_task,
6525 6523 (void *)&stmf_workers[i], 0, &p0, TS_RUN,
6526 6524 minclsyspri);
6527 6525 }
6528 6526 return;
6529 6527 }
6530 6528 /* At this point we know that we are decreasing the # of workers */
6531 6529 stmf_nworkers_accepting_cmds = workers_needed;
6532 6530 stmf_nworkers_needed = workers_needed;
6533 6531 /* Signal the workers that its time to quit */
6534 6532 for (i = (stmf_nworkers_cur - 1); i >= stmf_nworkers_needed; i--) {
6535 6533 w = &stmf_workers[i];
6536 6534 ASSERT(w && (w->worker_flags & STMF_WORKER_STARTED));
6537 6535 mutex_enter(&w->worker_lock);
6538 6536 w->worker_flags |= STMF_WORKER_TERMINATE;
6539 6537 if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0)
6540 6538 cv_signal(&w->worker_cv);
6541 6539 mutex_exit(&w->worker_lock);
6542 6540 }
6543 6541 }
6544 6542
6545 6543 /*
6546 6544 * Fills out a dbuf from stmf_xfer_data_t (contained in the db_lu_private).
6547 6545 * If all the data has been filled out, frees the xd and makes
6548 6546 * db_lu_private NULL.
6549 6547 */
6550 6548 void
6551 6549 stmf_xd_to_dbuf(stmf_data_buf_t *dbuf, int set_rel_off)
6552 6550 {
6553 6551 stmf_xfer_data_t *xd;
6554 6552 uint8_t *p;
6555 6553 int i;
6556 6554 uint32_t s;
6557 6555
6558 6556 xd = (stmf_xfer_data_t *)dbuf->db_lu_private;
6559 6557 dbuf->db_data_size = 0;
6560 6558 if (set_rel_off)
6561 6559 dbuf->db_relative_offset = xd->size_done;
6562 6560 for (i = 0; i < dbuf->db_sglist_length; i++) {
6563 6561 s = min(xd->size_left, dbuf->db_sglist[i].seg_length);
6564 6562 p = &xd->buf[xd->size_done];
6565 6563 bcopy(p, dbuf->db_sglist[i].seg_addr, s);
6566 6564 xd->size_left -= s;
6567 6565 xd->size_done += s;
6568 6566 dbuf->db_data_size += s;
6569 6567 if (xd->size_left == 0) {
6570 6568 kmem_free(xd, xd->alloc_size);
6571 6569 dbuf->db_lu_private = NULL;
6572 6570 return;
6573 6571 }
6574 6572 }
6575 6573 }
6576 6574
6577 6575 /* ARGSUSED */
6578 6576 stmf_status_t
6579 6577 stmf_dlun0_task_alloc(scsi_task_t *task)
6580 6578 {
6581 6579 return (STMF_SUCCESS);
6582 6580 }
6583 6581
6584 6582 void
6585 6583 stmf_dlun0_new_task(scsi_task_t *task, stmf_data_buf_t *dbuf)
6586 6584 {
6587 6585 uint8_t *cdbp = (uint8_t *)&task->task_cdb[0];
6588 6586 stmf_i_scsi_session_t *iss;
6589 6587 uint32_t sz, minsz;
6590 6588 uint8_t *p;
6591 6589 stmf_xfer_data_t *xd;
6592 6590 uint8_t inq_page_length = 31;
6593 6591
6594 6592 if (task->task_mgmt_function) {
6595 6593 stmf_scsilib_handle_task_mgmt(task);
6596 6594 return;
6597 6595 }
6598 6596
6599 6597 switch (cdbp[0]) {
6600 6598 case SCMD_INQUIRY:
6601 6599 /*
6602 6600 * Basic protocol checks. In addition, only reply to
6603 6601 * standard inquiry. Otherwise, the LU provider needs
6604 6602 * to respond.
6605 6603 */
6606 6604
6607 6605 if (cdbp[2] || (cdbp[1] & 1) || cdbp[5]) {
6608 6606 stmf_scsilib_send_status(task, STATUS_CHECK,
6609 6607 STMF_SAA_INVALID_FIELD_IN_CDB);
6610 6608 return;
6611 6609 }
6612 6610
6613 6611 task->task_cmd_xfer_length =
6614 6612 (((uint32_t)cdbp[3]) << 8) | cdbp[4];
6615 6613
6616 6614 if (task->task_additional_flags &
6617 6615 TASK_AF_NO_EXPECTED_XFER_LENGTH) {
6618 6616 task->task_expected_xfer_length =
6619 6617 task->task_cmd_xfer_length;
6620 6618 }
6621 6619
6622 6620 sz = min(task->task_expected_xfer_length,
6623 6621 min(36, task->task_cmd_xfer_length));
6624 6622 minsz = 36;
6625 6623
6626 6624 if (sz == 0) {
6627 6625 stmf_scsilib_send_status(task, STATUS_GOOD, 0);
6628 6626 return;
6629 6627 }
6630 6628
6631 6629 if (dbuf && (dbuf->db_sglist[0].seg_length < 36)) {
6632 6630 /*
6633 6631 * Ignore any preallocated dbuf if the size is less
6634 6632 * than 36. It will be freed during the task_free.
6635 6633 */
6636 6634 dbuf = NULL;
6637 6635 }
6638 6636 if (dbuf == NULL)
6639 6637 dbuf = stmf_alloc_dbuf(task, minsz, &minsz, 0);
6640 6638 if ((dbuf == NULL) || (dbuf->db_sglist[0].seg_length < sz)) {
6641 6639 stmf_abort(STMF_QUEUE_TASK_ABORT, task,
6642 6640 STMF_ALLOC_FAILURE, NULL);
6643 6641 return;
6644 6642 }
6645 6643 dbuf->db_lu_private = NULL;
6646 6644
6647 6645 p = dbuf->db_sglist[0].seg_addr;
6648 6646
6649 6647 /*
6650 6648 * Standard inquiry handling only.
6651 6649 */
6652 6650
6653 6651 bzero(p, inq_page_length + 5);
6654 6652
6655 6653 p[0] = DPQ_SUPPORTED | DTYPE_UNKNOWN;
6656 6654 p[2] = 5;
6657 6655 p[3] = 0x12;
6658 6656 p[4] = inq_page_length;
6659 6657 p[6] = 0x80;
6660 6658
6661 6659 (void) strncpy((char *)p+8, "SUN ", 8);
6662 6660 (void) strncpy((char *)p+16, "COMSTAR ", 16);
6663 6661 (void) strncpy((char *)p+32, "1.0 ", 4);
6664 6662
6665 6663 dbuf->db_data_size = sz;
6666 6664 dbuf->db_relative_offset = 0;
6667 6665 dbuf->db_flags = DB_DIRECTION_TO_RPORT;
6668 6666 (void) stmf_xfer_data(task, dbuf, 0);
6669 6667
6670 6668 return;
6671 6669
6672 6670 case SCMD_REPORT_LUNS:
6673 6671 task->task_cmd_xfer_length =
6674 6672 ((((uint32_t)task->task_cdb[6]) << 24) |
6675 6673 (((uint32_t)task->task_cdb[7]) << 16) |
6676 6674 (((uint32_t)task->task_cdb[8]) << 8) |
6677 6675 ((uint32_t)task->task_cdb[9]));
6678 6676
6679 6677 if (task->task_additional_flags &
6680 6678 TASK_AF_NO_EXPECTED_XFER_LENGTH) {
6681 6679 task->task_expected_xfer_length =
6682 6680 task->task_cmd_xfer_length;
6683 6681 }
6684 6682
6685 6683 sz = min(task->task_expected_xfer_length,
6686 6684 task->task_cmd_xfer_length);
6687 6685
6688 6686 if (sz < 16) {
6689 6687 stmf_scsilib_send_status(task, STATUS_CHECK,
6690 6688 STMF_SAA_INVALID_FIELD_IN_CDB);
6691 6689 return;
6692 6690 }
6693 6691
6694 6692 iss = (stmf_i_scsi_session_t *)
6695 6693 task->task_session->ss_stmf_private;
6696 6694 rw_enter(iss->iss_lockp, RW_WRITER);
6697 6695 xd = stmf_session_prepare_report_lun_data(iss->iss_sm);
6698 6696 rw_exit(iss->iss_lockp);
6699 6697
6700 6698 if (xd == NULL) {
6701 6699 stmf_abort(STMF_QUEUE_TASK_ABORT, task,
6702 6700 STMF_ALLOC_FAILURE, NULL);
6703 6701 return;
6704 6702 }
6705 6703
6706 6704 sz = min(sz, xd->size_left);
6707 6705 xd->size_left = sz;
6708 6706 minsz = min(512, sz);
6709 6707
6710 6708 if (dbuf == NULL)
6711 6709 dbuf = stmf_alloc_dbuf(task, sz, &minsz, 0);
6712 6710 if (dbuf == NULL) {
6713 6711 kmem_free(xd, xd->alloc_size);
6714 6712 stmf_abort(STMF_QUEUE_TASK_ABORT, task,
6715 6713 STMF_ALLOC_FAILURE, NULL);
6716 6714 return;
6717 6715 }
6718 6716 dbuf->db_lu_private = xd;
6719 6717 stmf_xd_to_dbuf(dbuf, 1);
6720 6718
6721 6719 atomic_and_32(&iss->iss_flags,
6722 6720 ~(ISS_LUN_INVENTORY_CHANGED | ISS_GOT_INITIAL_LUNS));
6723 6721 dbuf->db_flags = DB_DIRECTION_TO_RPORT;
6724 6722 (void) stmf_xfer_data(task, dbuf, 0);
6725 6723 return;
6726 6724 }
6727 6725
6728 6726 stmf_scsilib_send_status(task, STATUS_CHECK, STMF_SAA_INVALID_OPCODE);
6729 6727 }
6730 6728
6731 6729 void
6732 6730 stmf_dlun0_dbuf_done(scsi_task_t *task, stmf_data_buf_t *dbuf)
6733 6731 {
6734 6732 stmf_i_scsi_task_t *itask =
6735 6733 (stmf_i_scsi_task_t *)task->task_stmf_private;
6736 6734
6737 6735 if (dbuf->db_xfer_status != STMF_SUCCESS) {
6738 6736 stmf_abort(STMF_QUEUE_TASK_ABORT, task,
6739 6737 dbuf->db_xfer_status, NULL);
6740 6738 return;
6741 6739 }
6742 6740 task->task_nbytes_transferred += dbuf->db_data_size;
6743 6741 if (dbuf->db_lu_private) {
6744 6742 /* There is more */
6745 6743 stmf_xd_to_dbuf(dbuf, 1);
6746 6744 (void) stmf_xfer_data(task, dbuf, 0);
6747 6745 return;
6748 6746 }
6749 6747
6750 6748 stmf_free_dbuf(task, dbuf);
6751 6749 /*
6752 6750 * If this is a proxy task, it will need to be completed from the
6753 6751 * proxy port provider. This message lets pppt know that the xfer
6754 6752 * is complete. When we receive the status from pppt, we will
6755 6753 * then relay that status back to the lport.
6756 6754 */
6757 6755 if (itask->itask_flags & ITASK_PROXY_TASK) {
6758 6756 stmf_ic_msg_t *ic_xfer_done_msg = NULL;
6759 6757 stmf_status_t ic_ret = STMF_FAILURE;
6760 6758 uint64_t session_msg_id;
6761 6759 mutex_enter(&stmf_state.stmf_lock);
6762 6760 session_msg_id = stmf_proxy_msg_id++;
6763 6761 mutex_exit(&stmf_state.stmf_lock);
6764 6762 /* send xfer done status to pppt */
6765 6763 ic_xfer_done_msg = ic_scsi_data_xfer_done_msg_alloc(
6766 6764 itask->itask_proxy_msg_id,
6767 6765 task->task_session->ss_session_id,
6768 6766 STMF_SUCCESS, session_msg_id);
6769 6767 if (ic_xfer_done_msg) {
6770 6768 ic_ret = ic_tx_msg(ic_xfer_done_msg);
6771 6769 if (ic_ret != STMF_IC_MSG_SUCCESS) {
6772 6770 cmn_err(CE_WARN, "unable to xmit session msg");
6773 6771 }
6774 6772 }
6775 6773 /* task will be completed from pppt */
6776 6774 return;
6777 6775 }
6778 6776 stmf_scsilib_send_status(task, STATUS_GOOD, 0);
6779 6777 }
6780 6778
6781 6779 /* ARGSUSED */
6782 6780 void
6783 6781 stmf_dlun0_status_done(scsi_task_t *task)
6784 6782 {
6785 6783 }
6786 6784
6787 6785 /* ARGSUSED */
6788 6786 void
6789 6787 stmf_dlun0_task_free(scsi_task_t *task)
6790 6788 {
6791 6789 }
6792 6790
6793 6791 /* ARGSUSED */
6794 6792 stmf_status_t
6795 6793 stmf_dlun0_abort(struct stmf_lu *lu, int abort_cmd, void *arg, uint32_t flags)
6796 6794 {
6797 6795 scsi_task_t *task = (scsi_task_t *)arg;
6798 6796 stmf_i_scsi_task_t *itask =
6799 6797 (stmf_i_scsi_task_t *)task->task_stmf_private;
6800 6798 stmf_i_lu_t *ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private;
6801 6799 int i;
6802 6800 uint8_t map;
6803 6801
6804 6802 if ((task->task_mgmt_function) && (itask->itask_flags &
6805 6803 (ITASK_CAUSING_LU_RESET | ITASK_CAUSING_TARGET_RESET))) {
6806 6804 switch (task->task_mgmt_function) {
6807 6805 case TM_ABORT_TASK:
6808 6806 case TM_ABORT_TASK_SET:
6809 6807 case TM_CLEAR_TASK_SET:
6810 6808 case TM_LUN_RESET:
6811 6809 atomic_and_32(&ilu->ilu_flags, ~ILU_RESET_ACTIVE);
6812 6810 break;
6813 6811 case TM_TARGET_RESET:
6814 6812 case TM_TARGET_COLD_RESET:
6815 6813 case TM_TARGET_WARM_RESET:
6816 6814 stmf_abort_target_reset(task);
6817 6815 break;
6818 6816 }
6819 6817 return (STMF_ABORT_SUCCESS);
6820 6818 }
6821 6819
6822 6820 /*
6823 6821 * OK so its not a task mgmt. Make sure we free any xd sitting
6824 6822 * inside any dbuf.
6825 6823 */
6826 6824 if ((map = itask->itask_allocated_buf_map) != 0) {
6827 6825 for (i = 0; i < 4; i++) {
6828 6826 if ((map & 1) &&
6829 6827 ((itask->itask_dbufs[i])->db_lu_private)) {
6830 6828 stmf_xfer_data_t *xd;
6831 6829 stmf_data_buf_t *dbuf;
6832 6830
6833 6831 dbuf = itask->itask_dbufs[i];
6834 6832 xd = (stmf_xfer_data_t *)dbuf->db_lu_private;
6835 6833 dbuf->db_lu_private = NULL;
6836 6834 kmem_free(xd, xd->alloc_size);
6837 6835 }
6838 6836 map >>= 1;
6839 6837 }
6840 6838 }
6841 6839 return (STMF_ABORT_SUCCESS);
6842 6840 }
6843 6841
6844 6842 void
6845 6843 stmf_dlun0_task_poll(struct scsi_task *task)
6846 6844 {
6847 6845 /* Right now we only do this for handling task management functions */
6848 6846 ASSERT(task->task_mgmt_function);
6849 6847
6850 6848 switch (task->task_mgmt_function) {
6851 6849 case TM_ABORT_TASK:
6852 6850 case TM_ABORT_TASK_SET:
6853 6851 case TM_CLEAR_TASK_SET:
6854 6852 case TM_LUN_RESET:
6855 6853 (void) stmf_lun_reset_poll(task->task_lu, task, 0);
6856 6854 return;
6857 6855 case TM_TARGET_RESET:
6858 6856 case TM_TARGET_COLD_RESET:
6859 6857 case TM_TARGET_WARM_RESET:
6860 6858 stmf_target_reset_poll(task);
6861 6859 return;
6862 6860 }
6863 6861 }
6864 6862
6865 6863 /* ARGSUSED */
6866 6864 void
6867 6865 stmf_dlun0_ctl(struct stmf_lu *lu, int cmd, void *arg)
6868 6866 {
6869 6867 /* This function will never be called */
6870 6868 cmn_err(CE_WARN, "stmf_dlun0_ctl called with cmd %x", cmd);
6871 6869 }
6872 6870
6873 6871 void
6874 6872 stmf_dlun_init()
6875 6873 {
6876 6874 stmf_i_lu_t *ilu;
6877 6875
6878 6876 dlun0 = stmf_alloc(STMF_STRUCT_STMF_LU, 0, 0);
6879 6877 dlun0->lu_task_alloc = stmf_dlun0_task_alloc;
6880 6878 dlun0->lu_new_task = stmf_dlun0_new_task;
6881 6879 dlun0->lu_dbuf_xfer_done = stmf_dlun0_dbuf_done;
6882 6880 dlun0->lu_send_status_done = stmf_dlun0_status_done;
6883 6881 dlun0->lu_task_free = stmf_dlun0_task_free;
6884 6882 dlun0->lu_abort = stmf_dlun0_abort;
6885 6883 dlun0->lu_task_poll = stmf_dlun0_task_poll;
6886 6884 dlun0->lu_ctl = stmf_dlun0_ctl;
6887 6885
6888 6886 ilu = (stmf_i_lu_t *)dlun0->lu_stmf_private;
6889 6887 ilu->ilu_cur_task_cntr = &ilu->ilu_task_cntr1;
6890 6888 }
6891 6889
6892 6890 stmf_status_t
6893 6891 stmf_dlun_fini()
6894 6892 {
6895 6893 stmf_i_lu_t *ilu;
6896 6894
6897 6895 ilu = (stmf_i_lu_t *)dlun0->lu_stmf_private;
6898 6896
6899 6897 ASSERT(ilu->ilu_ntasks == ilu->ilu_ntasks_free);
6900 6898 if (ilu->ilu_ntasks) {
6901 6899 stmf_i_scsi_task_t *itask, *nitask;
6902 6900
6903 6901 nitask = ilu->ilu_tasks;
6904 6902 do {
6905 6903 itask = nitask;
6906 6904 nitask = itask->itask_lu_next;
6907 6905 dlun0->lu_task_free(itask->itask_task);
6908 6906 stmf_free(itask->itask_task);
6909 6907 } while (nitask != NULL);
6910 6908
6911 6909 }
6912 6910 stmf_free(dlun0);
6913 6911 return (STMF_SUCCESS);
6914 6912 }
6915 6913
6916 6914 void
6917 6915 stmf_abort_target_reset(scsi_task_t *task)
6918 6916 {
6919 6917 stmf_i_scsi_session_t *iss = (stmf_i_scsi_session_t *)
6920 6918 task->task_session->ss_stmf_private;
6921 6919 stmf_lun_map_t *lm;
6922 6920 stmf_lun_map_ent_t *lm_ent;
6923 6921 stmf_i_lu_t *ilu;
6924 6922 int i;
6925 6923
6926 6924 rw_enter(iss->iss_lockp, RW_READER);
6927 6925 lm = iss->iss_sm;
6928 6926 for (i = 0; i < lm->lm_nentries; i++) {
6929 6927 if (lm->lm_plus[i] == NULL)
6930 6928 continue;
6931 6929 lm_ent = (stmf_lun_map_ent_t *)lm->lm_plus[i];
6932 6930 ilu = (stmf_i_lu_t *)lm_ent->ent_lu->lu_stmf_private;
6933 6931 if (ilu->ilu_flags & ILU_RESET_ACTIVE) {
6934 6932 atomic_and_32(&ilu->ilu_flags, ~ILU_RESET_ACTIVE);
6935 6933 }
6936 6934 }
6937 6935 atomic_and_32(&iss->iss_flags, ~ISS_RESET_ACTIVE);
6938 6936 rw_exit(iss->iss_lockp);
6939 6937 }
6940 6938
6941 6939 /*
6942 6940 * The return value is only used by function managing target reset.
6943 6941 */
6944 6942 stmf_status_t
6945 6943 stmf_lun_reset_poll(stmf_lu_t *lu, struct scsi_task *task, int target_reset)
6946 6944 {
6947 6945 stmf_i_lu_t *ilu = (stmf_i_lu_t *)lu->lu_stmf_private;
6948 6946 int ntasks_pending;
6949 6947
6950 6948 ntasks_pending = ilu->ilu_ntasks - ilu->ilu_ntasks_free;
6951 6949 /*
6952 6950 * This function is also used during Target reset. The idea is that
6953 6951 * once all the commands are aborted, call the LU's reset entry
6954 6952 * point (abort entry point with a reset flag). But if this Task
6955 6953 * mgmt is running on this LU then all the tasks cannot be aborted.
6956 6954 * one task (this task) will still be running which is OK.
6957 6955 */
6958 6956 if ((ntasks_pending == 0) || ((task->task_lu == lu) &&
6959 6957 (ntasks_pending == 1))) {
6960 6958 stmf_status_t ret;
6961 6959
6962 6960 if ((task->task_mgmt_function == TM_LUN_RESET) ||
6963 6961 (task->task_mgmt_function == TM_TARGET_RESET) ||
6964 6962 (task->task_mgmt_function == TM_TARGET_WARM_RESET) ||
6965 6963 (task->task_mgmt_function == TM_TARGET_COLD_RESET)) {
6966 6964 ret = lu->lu_abort(lu, STMF_LU_RESET_STATE, task, 0);
6967 6965 } else {
6968 6966 ret = STMF_SUCCESS;
6969 6967 }
6970 6968 if (ret == STMF_SUCCESS) {
6971 6969 atomic_and_32(&ilu->ilu_flags, ~ILU_RESET_ACTIVE);
6972 6970 }
6973 6971 if (target_reset) {
6974 6972 return (ret);
6975 6973 }
6976 6974 if (ret == STMF_SUCCESS) {
6977 6975 stmf_scsilib_send_status(task, STATUS_GOOD, 0);
6978 6976 return (ret);
6979 6977 }
6980 6978 if (ret != STMF_BUSY) {
6981 6979 stmf_abort(STMF_QUEUE_TASK_ABORT, task, ret, NULL);
6982 6980 return (ret);
6983 6981 }
6984 6982 }
6985 6983
6986 6984 if (target_reset) {
6987 6985 /* Tell target reset polling code that we are not done */
6988 6986 return (STMF_BUSY);
6989 6987 }
6990 6988
6991 6989 if (stmf_task_poll_lu(task, ITASK_DEFAULT_POLL_TIMEOUT)
6992 6990 != STMF_SUCCESS) {
6993 6991 stmf_abort(STMF_QUEUE_TASK_ABORT, task,
6994 6992 STMF_ALLOC_FAILURE, NULL);
6995 6993 return (STMF_SUCCESS);
6996 6994 }
6997 6995
6998 6996 return (STMF_SUCCESS);
6999 6997 }
7000 6998
7001 6999 void
7002 7000 stmf_target_reset_poll(struct scsi_task *task)
7003 7001 {
7004 7002 stmf_i_scsi_session_t *iss = (stmf_i_scsi_session_t *)
7005 7003 task->task_session->ss_stmf_private;
7006 7004 stmf_lun_map_t *lm;
7007 7005 stmf_lun_map_ent_t *lm_ent;
7008 7006 stmf_i_lu_t *ilu;
7009 7007 stmf_status_t ret;
7010 7008 int i;
7011 7009 int not_done = 0;
7012 7010
7013 7011 ASSERT(iss->iss_flags & ISS_RESET_ACTIVE);
7014 7012
7015 7013 rw_enter(iss->iss_lockp, RW_READER);
7016 7014 lm = iss->iss_sm;
7017 7015 for (i = 0; i < lm->lm_nentries; i++) {
7018 7016 if (lm->lm_plus[i] == NULL)
7019 7017 continue;
7020 7018 lm_ent = (stmf_lun_map_ent_t *)lm->lm_plus[i];
7021 7019 ilu = (stmf_i_lu_t *)lm_ent->ent_lu->lu_stmf_private;
7022 7020 if (ilu->ilu_flags & ILU_RESET_ACTIVE) {
7023 7021 rw_exit(iss->iss_lockp);
7024 7022 ret = stmf_lun_reset_poll(lm_ent->ent_lu, task, 1);
7025 7023 rw_enter(iss->iss_lockp, RW_READER);
7026 7024 if (ret == STMF_SUCCESS)
7027 7025 continue;
7028 7026 not_done = 1;
7029 7027 if (ret != STMF_BUSY) {
7030 7028 rw_exit(iss->iss_lockp);
7031 7029 stmf_abort(STMF_QUEUE_TASK_ABORT, task,
7032 7030 STMF_ABORTED, NULL);
7033 7031 return;
7034 7032 }
7035 7033 }
7036 7034 }
7037 7035 rw_exit(iss->iss_lockp);
7038 7036
7039 7037 if (not_done) {
7040 7038 if (stmf_task_poll_lu(task, ITASK_DEFAULT_POLL_TIMEOUT)
7041 7039 != STMF_SUCCESS) {
7042 7040 stmf_abort(STMF_QUEUE_TASK_ABORT, task,
7043 7041 STMF_ALLOC_FAILURE, NULL);
7044 7042 return;
7045 7043 }
7046 7044 return;
7047 7045 }
7048 7046
7049 7047 atomic_and_32(&iss->iss_flags, ~ISS_RESET_ACTIVE);
7050 7048
7051 7049 stmf_scsilib_send_status(task, STATUS_GOOD, 0);
7052 7050 }
7053 7051
7054 7052 stmf_status_t
7055 7053 stmf_lu_add_event(stmf_lu_t *lu, int eventid)
7056 7054 {
7057 7055 stmf_i_lu_t *ilu = (stmf_i_lu_t *)lu->lu_stmf_private;
7058 7056
7059 7057 if ((eventid < 0) || (eventid >= STMF_MAX_NUM_EVENTS)) {
7060 7058 return (STMF_INVALID_ARG);
7061 7059 }
7062 7060
7063 7061 STMF_EVENT_ADD(ilu->ilu_event_hdl, eventid);
7064 7062 return (STMF_SUCCESS);
7065 7063 }
7066 7064
7067 7065 stmf_status_t
7068 7066 stmf_lu_remove_event(stmf_lu_t *lu, int eventid)
7069 7067 {
7070 7068 stmf_i_lu_t *ilu = (stmf_i_lu_t *)lu->lu_stmf_private;
7071 7069
7072 7070 if (eventid == STMF_EVENT_ALL) {
7073 7071 STMF_EVENT_CLEAR_ALL(ilu->ilu_event_hdl);
7074 7072 return (STMF_SUCCESS);
7075 7073 }
7076 7074
7077 7075 if ((eventid < 0) || (eventid >= STMF_MAX_NUM_EVENTS)) {
7078 7076 return (STMF_INVALID_ARG);
7079 7077 }
7080 7078
7081 7079 STMF_EVENT_REMOVE(ilu->ilu_event_hdl, eventid);
7082 7080 return (STMF_SUCCESS);
7083 7081 }
7084 7082
7085 7083 stmf_status_t
7086 7084 stmf_lport_add_event(stmf_local_port_t *lport, int eventid)
7087 7085 {
7088 7086 stmf_i_local_port_t *ilport =
7089 7087 (stmf_i_local_port_t *)lport->lport_stmf_private;
7090 7088
7091 7089 if ((eventid < 0) || (eventid >= STMF_MAX_NUM_EVENTS)) {
7092 7090 return (STMF_INVALID_ARG);
7093 7091 }
7094 7092
7095 7093 STMF_EVENT_ADD(ilport->ilport_event_hdl, eventid);
7096 7094 return (STMF_SUCCESS);
7097 7095 }
7098 7096
7099 7097 stmf_status_t
7100 7098 stmf_lport_remove_event(stmf_local_port_t *lport, int eventid)
7101 7099 {
7102 7100 stmf_i_local_port_t *ilport =
7103 7101 (stmf_i_local_port_t *)lport->lport_stmf_private;
7104 7102
7105 7103 if (eventid == STMF_EVENT_ALL) {
7106 7104 STMF_EVENT_CLEAR_ALL(ilport->ilport_event_hdl);
7107 7105 return (STMF_SUCCESS);
7108 7106 }
7109 7107
7110 7108 if ((eventid < 0) || (eventid >= STMF_MAX_NUM_EVENTS)) {
7111 7109 return (STMF_INVALID_ARG);
7112 7110 }
7113 7111
7114 7112 STMF_EVENT_REMOVE(ilport->ilport_event_hdl, eventid);
7115 7113 return (STMF_SUCCESS);
7116 7114 }
7117 7115
7118 7116 void
7119 7117 stmf_generate_lu_event(stmf_i_lu_t *ilu, int eventid, void *arg, uint32_t flags)
7120 7118 {
7121 7119 if (STMF_EVENT_ENABLED(ilu->ilu_event_hdl, eventid) &&
7122 7120 (ilu->ilu_lu->lu_event_handler != NULL)) {
7123 7121 ilu->ilu_lu->lu_event_handler(ilu->ilu_lu, eventid, arg, flags);
7124 7122 }
7125 7123 }
7126 7124
7127 7125 void
7128 7126 stmf_generate_lport_event(stmf_i_local_port_t *ilport, int eventid, void *arg,
7129 7127 uint32_t flags)
7130 7128 {
7131 7129 if (STMF_EVENT_ENABLED(ilport->ilport_event_hdl, eventid) &&
7132 7130 (ilport->ilport_lport->lport_event_handler != NULL)) {
7133 7131 ilport->ilport_lport->lport_event_handler(
7134 7132 ilport->ilport_lport, eventid, arg, flags);
7135 7133 }
7136 7134 }
7137 7135
7138 7136 /*
7139 7137 * With the possibility of having multiple itl sessions pointing to the
7140 7138 * same itl_kstat_info, the ilu_kstat_lock mutex is used to synchronize
7141 7139 * the kstat update of the ilu_kstat_io, itl_kstat_taskq and itl_kstat_lu_xfer
7142 7140 * statistics.
7143 7141 */
7144 7142 void
7145 7143 stmf_itl_task_start(stmf_i_scsi_task_t *itask)
7146 7144 {
7147 7145 stmf_itl_data_t *itl = itask->itask_itl_datap;
7148 7146 scsi_task_t *task = itask->itask_task;
7149 7147 stmf_i_lu_t *ilu;
7150 7148
7151 7149 if (itl == NULL || task->task_lu == dlun0)
7152 7150 return;
7153 7151 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private;
7154 7152 itask->itask_start_timestamp = gethrtime();
7155 7153 if (ilu->ilu_kstat_io != NULL) {
7156 7154 mutex_enter(ilu->ilu_kstat_io->ks_lock);
7157 7155 stmf_update_kstat_lu_q(itask->itask_task, kstat_waitq_enter);
7158 7156 mutex_exit(ilu->ilu_kstat_io->ks_lock);
7159 7157 }
7160 7158
7161 7159 stmf_update_kstat_lport_q(itask->itask_task, kstat_waitq_enter);
7162 7160 }
7163 7161
7164 7162 void
7165 7163 stmf_itl_lu_new_task(stmf_i_scsi_task_t *itask)
7166 7164 {
7167 7165 stmf_itl_data_t *itl = itask->itask_itl_datap;
7168 7166 scsi_task_t *task = itask->itask_task;
7169 7167 stmf_i_lu_t *ilu;
7170 7168
7171 7169 if (itl == NULL || task->task_lu == dlun0)
7172 7170 return;
7173 7171 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private;
7174 7172 if (ilu->ilu_kstat_io != NULL) {
7175 7173 mutex_enter(ilu->ilu_kstat_io->ks_lock);
7176 7174 stmf_update_kstat_lu_q(itask->itask_task, kstat_waitq_to_runq);
7177 7175 mutex_exit(ilu->ilu_kstat_io->ks_lock);
7178 7176 }
7179 7177
7180 7178 stmf_update_kstat_lport_q(itask->itask_task, kstat_waitq_to_runq);
7181 7179 }
7182 7180
7183 7181 void
7184 7182 stmf_itl_task_done(stmf_i_scsi_task_t *itask)
7185 7183 {
7186 7184 stmf_itl_data_t *itl = itask->itask_itl_datap;
7187 7185 scsi_task_t *task = itask->itask_task;
7188 7186 stmf_i_lu_t *ilu;
7189 7187
7190 7188 itask->itask_done_timestamp = gethrtime();
7191 7189
7192 7190 if (itl == NULL || task->task_lu == dlun0)
7193 7191 return;
7194 7192 ilu = (stmf_i_lu_t *)task->task_lu->lu_stmf_private;
7195 7193
7196 7194 if (ilu->ilu_kstat_io == NULL)
7197 7195 return;
7198 7196
7199 7197 mutex_enter(ilu->ilu_kstat_io->ks_lock);
7200 7198
7201 7199 if (itask->itask_flags & ITASK_KSTAT_IN_RUNQ) {
7202 7200 stmf_update_kstat_lu_q(task, kstat_runq_exit);
7203 7201 mutex_exit(ilu->ilu_kstat_io->ks_lock);
7204 7202 stmf_update_kstat_lport_q(task, kstat_runq_exit);
7205 7203 } else {
7206 7204 stmf_update_kstat_lu_q(task, kstat_waitq_exit);
7207 7205 mutex_exit(ilu->ilu_kstat_io->ks_lock);
7208 7206 stmf_update_kstat_lport_q(task, kstat_waitq_exit);
7209 7207 }
7210 7208 }
7211 7209
7212 7210 static void
7213 7211 stmf_lport_xfer_start(stmf_i_scsi_task_t *itask, stmf_data_buf_t *dbuf)
7214 7212 {
7215 7213 stmf_itl_data_t *itl = itask->itask_itl_datap;
7216 7214
7217 7215 if (itl == NULL)
7218 7216 return;
7219 7217
7220 7218 DTRACE_PROBE2(scsi__xfer__start, scsi_task_t *, itask->itask_task,
7221 7219 stmf_data_buf_t *, dbuf);
7222 7220
7223 7221 dbuf->db_xfer_start_timestamp = gethrtime();
7224 7222 }
7225 7223
7226 7224 static void
7227 7225 stmf_lport_xfer_done(stmf_i_scsi_task_t *itask, stmf_data_buf_t *dbuf)
7228 7226 {
7229 7227 stmf_itl_data_t *itl = itask->itask_itl_datap;
7230 7228 hrtime_t elapsed_time;
7231 7229 uint64_t xfer_size;
7232 7230
7233 7231 if (itl == NULL)
7234 7232 return;
7235 7233
7236 7234 xfer_size = (dbuf->db_xfer_status == STMF_SUCCESS) ?
7237 7235 dbuf->db_data_size : 0;
7238 7236
7239 7237 elapsed_time = gethrtime() - dbuf->db_xfer_start_timestamp;
7240 7238 if (dbuf->db_flags & DB_DIRECTION_TO_RPORT) {
7241 7239 atomic_add_64((uint64_t *)&itask->itask_lport_read_time,
7242 7240 elapsed_time);
7243 7241 atomic_add_64((uint64_t *)&itask->itask_read_xfer,
7244 7242 xfer_size);
7245 7243 } else {
7246 7244 atomic_add_64((uint64_t *)&itask->itask_lport_write_time,
7247 7245 elapsed_time);
7248 7246 atomic_add_64((uint64_t *)&itask->itask_write_xfer,
7249 7247 xfer_size);
7250 7248 }
7251 7249
7252 7250 DTRACE_PROBE3(scsi__xfer__end, scsi_task_t *, itask->itask_task,
7253 7251 stmf_data_buf_t *, dbuf, hrtime_t, elapsed_time);
7254 7252
7255 7253 dbuf->db_xfer_start_timestamp = 0;
7256 7254 }
7257 7255
7258 7256 void
7259 7257 stmf_svc_init()
7260 7258 {
7261 7259 if (stmf_state.stmf_svc_flags & STMF_SVC_STARTED)
7262 7260 return;
7263 7261 stmf_state.stmf_svc_tailp = &stmf_state.stmf_svc_active;
7264 7262 stmf_state.stmf_svc_taskq = ddi_taskq_create(0, "STMF_SVC_TASKQ", 1,
7265 7263 TASKQ_DEFAULTPRI, 0);
7266 7264 (void) ddi_taskq_dispatch(stmf_state.stmf_svc_taskq,
7267 7265 stmf_svc, 0, DDI_SLEEP);
7268 7266 }
7269 7267
7270 7268 stmf_status_t
7271 7269 stmf_svc_fini()
7272 7270 {
7273 7271 uint32_t i;
7274 7272
7275 7273 mutex_enter(&stmf_state.stmf_lock);
7276 7274 if (stmf_state.stmf_svc_flags & STMF_SVC_STARTED) {
7277 7275 stmf_state.stmf_svc_flags |= STMF_SVC_TERMINATE;
7278 7276 cv_signal(&stmf_state.stmf_cv);
7279 7277 }
7280 7278 mutex_exit(&stmf_state.stmf_lock);
7281 7279
7282 7280 /* Wait for 5 seconds */
7283 7281 for (i = 0; i < 500; i++) {
7284 7282 if (stmf_state.stmf_svc_flags & STMF_SVC_STARTED)
7285 7283 delay(drv_usectohz(10000));
7286 7284 else
7287 7285 break;
7288 7286 }
7289 7287 if (i == 500)
7290 7288 return (STMF_BUSY);
7291 7289
7292 7290 ddi_taskq_destroy(stmf_state.stmf_svc_taskq);
7293 7291
7294 7292 return (STMF_SUCCESS);
7295 7293 }
7296 7294
7297 7295 struct stmf_svc_clocks {
7298 7296 clock_t drain_start, drain_next;
7299 7297 clock_t timing_start, timing_next;
7300 7298 clock_t worker_delay;
7301 7299 };
7302 7300
7303 7301 /* ARGSUSED */
7304 7302 void
7305 7303 stmf_svc(void *arg)
7306 7304 {
7307 7305 stmf_svc_req_t *req;
7308 7306 stmf_lu_t *lu;
7309 7307 stmf_i_lu_t *ilu;
7310 7308 stmf_local_port_t *lport;
7311 7309 struct stmf_svc_clocks clks = { 0 };
7312 7310
7313 7311 mutex_enter(&stmf_state.stmf_lock);
7314 7312 stmf_state.stmf_svc_flags |= STMF_SVC_STARTED | STMF_SVC_ACTIVE;
7315 7313
7316 7314 while (!(stmf_state.stmf_svc_flags & STMF_SVC_TERMINATE)) {
7317 7315 if (stmf_state.stmf_svc_active == NULL) {
7318 7316 stmf_svc_timeout(&clks);
7319 7317 continue;
7320 7318 }
7321 7319
7322 7320 /*
7323 7321 * Pop the front request from the active list. After this,
7324 7322 * the request will no longer be referenced by global state,
7325 7323 * so it should be safe to access it without holding the
7326 7324 * stmf state lock.
7327 7325 */
7328 7326 req = stmf_state.stmf_svc_active;
7329 7327 stmf_state.stmf_svc_active = req->svc_next;
7330 7328
7331 7329 if (stmf_state.stmf_svc_active == NULL)
7332 7330 stmf_state.stmf_svc_tailp = &stmf_state.stmf_svc_active;
7333 7331
7334 7332 switch (req->svc_cmd) {
7335 7333 case STMF_CMD_LPORT_ONLINE:
7336 7334 /* Fallthrough */
7337 7335 case STMF_CMD_LPORT_OFFLINE:
7338 7336 mutex_exit(&stmf_state.stmf_lock);
7339 7337 lport = (stmf_local_port_t *)req->svc_obj;
7340 7338 lport->lport_ctl(lport, req->svc_cmd, &req->svc_info);
7341 7339 break;
7342 7340 case STMF_CMD_LU_ONLINE:
7343 7341 mutex_exit(&stmf_state.stmf_lock);
7344 7342 lu = (stmf_lu_t *)req->svc_obj;
7345 7343 lu->lu_ctl(lu, req->svc_cmd, &req->svc_info);
7346 7344 break;
7347 7345 case STMF_CMD_LU_OFFLINE:
7348 7346 /* Remove all mappings of this LU */
7349 7347 stmf_session_lu_unmapall((stmf_lu_t *)req->svc_obj);
7350 7348 /* Kill all the pending I/Os for this LU */
7351 7349 mutex_exit(&stmf_state.stmf_lock);
7352 7350 stmf_task_lu_killall((stmf_lu_t *)req->svc_obj, NULL,
7353 7351 STMF_ABORTED);
7354 7352 lu = (stmf_lu_t *)req->svc_obj;
7355 7353 ilu = (stmf_i_lu_t *)lu->lu_stmf_private;
7356 7354 stmf_wait_ilu_tasks_finish(ilu);
7357 7355 lu->lu_ctl(lu, req->svc_cmd, &req->svc_info);
7358 7356 break;
7359 7357 default:
7360 7358 cmn_err(CE_PANIC, "stmf_svc: unknown cmd %d",
7361 7359 req->svc_cmd);
7362 7360 }
7363 7361
7364 7362 kmem_free(req, req->svc_req_alloc_size);
7365 7363 mutex_enter(&stmf_state.stmf_lock);
7366 7364 }
7367 7365
7368 7366 stmf_state.stmf_svc_flags &= ~(STMF_SVC_STARTED | STMF_SVC_ACTIVE);
7369 7367 mutex_exit(&stmf_state.stmf_lock);
7370 7368 }
7371 7369
7372 7370 static void
7373 7371 stmf_svc_timeout(struct stmf_svc_clocks *clks)
7374 7372 {
7375 7373 clock_t td;
7376 7374 stmf_i_local_port_t *ilport, *next_ilport;
7377 7375 stmf_i_scsi_session_t *iss;
7378 7376
7379 7377 ASSERT(mutex_owned(&stmf_state.stmf_lock));
7380 7378
7381 7379 td = drv_usectohz(20000);
7382 7380
7383 7381 /* Do timeouts */
7384 7382 if (stmf_state.stmf_nlus &&
7385 7383 ((!clks->timing_next) || (ddi_get_lbolt() >= clks->timing_next))) {
7386 7384 if (!stmf_state.stmf_svc_ilu_timing) {
7387 7385 /* we are starting a new round */
7388 7386 stmf_state.stmf_svc_ilu_timing =
7389 7387 stmf_state.stmf_ilulist;
7390 7388 clks->timing_start = ddi_get_lbolt();
7391 7389 }
7392 7390
7393 7391 stmf_check_ilu_timing();
7394 7392 if (!stmf_state.stmf_svc_ilu_timing) {
7395 7393 /* we finished a complete round */
7396 7394 clks->timing_next =
7397 7395 clks->timing_start + drv_usectohz(5*1000*1000);
7398 7396 } else {
7399 7397 /* we still have some ilu items to check */
7400 7398 clks->timing_next =
7401 7399 ddi_get_lbolt() + drv_usectohz(1*1000*1000);
7402 7400 }
7403 7401
7404 7402 if (stmf_state.stmf_svc_active)
7405 7403 return;
7406 7404 }
7407 7405
7408 7406 /* Check if there are free tasks to clear */
7409 7407 if (stmf_state.stmf_nlus &&
7410 7408 ((!clks->drain_next) || (ddi_get_lbolt() >= clks->drain_next))) {
7411 7409 if (!stmf_state.stmf_svc_ilu_draining) {
7412 7410 /* we are starting a new round */
7413 7411 stmf_state.stmf_svc_ilu_draining =
7414 7412 stmf_state.stmf_ilulist;
7415 7413 clks->drain_start = ddi_get_lbolt();
7416 7414 }
7417 7415
7418 7416 stmf_check_freetask();
7419 7417 if (!stmf_state.stmf_svc_ilu_draining) {
7420 7418 /* we finished a complete round */
7421 7419 clks->drain_next =
7422 7420 clks->drain_start + drv_usectohz(10*1000*1000);
7423 7421 } else {
7424 7422 /* we still have some ilu items to check */
7425 7423 clks->drain_next =
7426 7424 ddi_get_lbolt() + drv_usectohz(1*1000*1000);
7427 7425 }
7428 7426
7429 7427 if (stmf_state.stmf_svc_active)
7430 7428 return;
7431 7429 }
7432 7430
7433 7431 /* Check if we need to run worker_mgmt */
7434 7432 if (ddi_get_lbolt() > clks->worker_delay) {
7435 7433 stmf_worker_mgmt();
7436 7434 clks->worker_delay = ddi_get_lbolt() +
7437 7435 stmf_worker_mgmt_delay;
7438 7436 }
7439 7437
7440 7438 /* Check if any active session got its 1st LUN */
7441 7439 if (stmf_state.stmf_process_initial_luns) {
7442 7440 int stmf_level = 0;
7443 7441 int port_level;
7444 7442
7445 7443 for (ilport = stmf_state.stmf_ilportlist; ilport;
7446 7444 ilport = next_ilport) {
7447 7445 int ilport_lock_held;
7448 7446 next_ilport = ilport->ilport_next;
7449 7447
7450 7448 if ((ilport->ilport_flags &
7451 7449 ILPORT_SS_GOT_INITIAL_LUNS) == 0)
7452 7450 continue;
7453 7451
7454 7452 port_level = 0;
7455 7453 rw_enter(&ilport->ilport_lock, RW_READER);
7456 7454 ilport_lock_held = 1;
7457 7455
7458 7456 for (iss = ilport->ilport_ss_list; iss;
7459 7457 iss = iss->iss_next) {
7460 7458 if ((iss->iss_flags &
7461 7459 ISS_GOT_INITIAL_LUNS) == 0)
7462 7460 continue;
7463 7461
7464 7462 port_level++;
7465 7463 stmf_level++;
7466 7464 atomic_and_32(&iss->iss_flags,
7467 7465 ~ISS_GOT_INITIAL_LUNS);
7468 7466 atomic_or_32(&iss->iss_flags,
7469 7467 ISS_EVENT_ACTIVE);
7470 7468 rw_exit(&ilport->ilport_lock);
7471 7469 ilport_lock_held = 0;
7472 7470 mutex_exit(&stmf_state.stmf_lock);
7473 7471 stmf_generate_lport_event(ilport,
7474 7472 LPORT_EVENT_INITIAL_LUN_MAPPED,
7475 7473 iss->iss_ss, 0);
7476 7474 atomic_and_32(&iss->iss_flags,
7477 7475 ~ISS_EVENT_ACTIVE);
7478 7476 mutex_enter(&stmf_state.stmf_lock);
7479 7477 /*
7480 7478 * scan all the ilports again as the
7481 7479 * ilport list might have changed.
7482 7480 */
7483 7481 next_ilport = stmf_state.stmf_ilportlist;
7484 7482 break;
7485 7483 }
7486 7484
7487 7485 if (port_level == 0)
7488 7486 atomic_and_32(&ilport->ilport_flags,
7489 7487 ~ILPORT_SS_GOT_INITIAL_LUNS);
7490 7488 /* drop the lock if we are holding it. */
7491 7489 if (ilport_lock_held == 1)
7492 7490 rw_exit(&ilport->ilport_lock);
7493 7491
7494 7492 /* Max 4 session at a time */
7495 7493 if (stmf_level >= 4)
7496 7494 break;
7497 7495 }
7498 7496
7499 7497 if (stmf_level == 0)
7500 7498 stmf_state.stmf_process_initial_luns = 0;
7501 7499 }
7502 7500
7503 7501 stmf_state.stmf_svc_flags &= ~STMF_SVC_ACTIVE;
7504 7502 (void) cv_reltimedwait(&stmf_state.stmf_cv,
7505 7503 &stmf_state.stmf_lock, td, TR_CLOCK_TICK);
7506 7504 stmf_state.stmf_svc_flags |= STMF_SVC_ACTIVE;
7507 7505 }
7508 7506
7509 7507 /*
7510 7508 * Waits for ongoing I/O tasks to finish on an LU in preparation for
7511 7509 * the LU's offlining. The LU should already be in an Offlining state
7512 7510 * (otherwise I/O to the LU might never end). There is an additional
7513 7511 * enforcement of this via a deadman timer check.
7514 7512 */
7515 7513 static void
7516 7514 stmf_wait_ilu_tasks_finish(stmf_i_lu_t *ilu)
7517 7515 {
7518 7516 clock_t start, now, deadline;
7519 7517
7520 7518 start = now = ddi_get_lbolt();
7521 7519 deadline = start + drv_usectohz(stmf_io_deadman * 1000000llu);
7522 7520 mutex_enter(&ilu->ilu_task_lock);
7523 7521 while (ilu->ilu_ntasks != ilu->ilu_ntasks_free) {
7524 7522 (void) cv_timedwait(&ilu->ilu_offline_pending_cv,
7525 7523 &ilu->ilu_task_lock, deadline);
7526 7524 now = ddi_get_lbolt();
7527 7525 if (now > deadline) {
7528 7526 if (stmf_io_deadman_enabled) {
7529 7527 cmn_err(CE_PANIC, "stmf_svc: I/O deadman hit "
7530 7528 "on STMF_CMD_LU_OFFLINE after %d seconds",
7531 7529 stmf_io_deadman);
7532 7530 } else {
7533 7531 /* keep on spinning */
7534 7532 deadline = now + drv_usectohz(stmf_io_deadman *
7535 7533 1000000llu);
7536 7534 }
7537 7535 }
7538 7536 }
7539 7537 mutex_exit(&ilu->ilu_task_lock);
7540 7538 DTRACE_PROBE1(deadman__timeout__wait, clock_t, now - start);
7541 7539 }
7542 7540
7543 7541 void
7544 7542 stmf_svc_queue(int cmd, void *obj, stmf_state_change_info_t *info)
7545 7543 {
7546 7544 stmf_svc_req_t *req;
7547 7545 int s;
7548 7546
7549 7547 ASSERT(!mutex_owned(&stmf_state.stmf_lock));
7550 7548 s = sizeof (stmf_svc_req_t);
7551 7549 if (info->st_additional_info) {
7552 7550 s += strlen(info->st_additional_info) + 1;
7553 7551 }
7554 7552 req = kmem_zalloc(s, KM_SLEEP);
7555 7553
7556 7554 req->svc_cmd = cmd;
7557 7555 req->svc_obj = obj;
7558 7556 req->svc_info.st_rflags = info->st_rflags;
7559 7557 if (info->st_additional_info) {
7560 7558 req->svc_info.st_additional_info = (char *)(GET_BYTE_OFFSET(req,
7561 7559 sizeof (stmf_svc_req_t)));
7562 7560 (void) strcpy(req->svc_info.st_additional_info,
7563 7561 info->st_additional_info);
7564 7562 }
7565 7563 req->svc_req_alloc_size = s;
7566 7564 req->svc_next = NULL;
7567 7565
7568 7566 mutex_enter(&stmf_state.stmf_lock);
7569 7567 *stmf_state.stmf_svc_tailp = req;
7570 7568 stmf_state.stmf_svc_tailp = &req->svc_next;
7571 7569 if ((stmf_state.stmf_svc_flags & STMF_SVC_ACTIVE) == 0) {
7572 7570 cv_signal(&stmf_state.stmf_cv);
7573 7571 }
7574 7572 mutex_exit(&stmf_state.stmf_lock);
7575 7573 }
7576 7574
7577 7575 static void
7578 7576 stmf_svc_kill_obj_requests(void *obj)
7579 7577 {
7580 7578 stmf_svc_req_t *prev_req = NULL;
7581 7579 stmf_svc_req_t *next_req;
7582 7580 stmf_svc_req_t *req;
7583 7581
7584 7582 ASSERT(mutex_owned(&stmf_state.stmf_lock));
7585 7583
7586 7584 for (req = stmf_state.stmf_svc_active; req != NULL; req = next_req) {
7587 7585 next_req = req->svc_next;
7588 7586
7589 7587 if (req->svc_obj == obj) {
7590 7588 if (prev_req != NULL)
7591 7589 prev_req->svc_next = next_req;
7592 7590 else
7593 7591 stmf_state.stmf_svc_active = next_req;
7594 7592
7595 7593 if (next_req == NULL)
7596 7594 stmf_state.stmf_svc_tailp = (prev_req != NULL) ?
7597 7595 &prev_req->svc_next :
7598 7596 &stmf_state.stmf_svc_active;
7599 7597
7600 7598 kmem_free(req, req->svc_req_alloc_size);
7601 7599 } else {
7602 7600 prev_req = req;
7603 7601 }
7604 7602 }
7605 7603 }
7606 7604
7607 7605 void
7608 7606 stmf_trace(caddr_t ident, const char *fmt, ...)
7609 7607 {
7610 7608 va_list args;
7611 7609 char tbuf[160];
7612 7610 int len;
7613 7611
7614 7612 if (!stmf_trace_on)
7615 7613 return;
7616 7614 len = snprintf(tbuf, 158, "%s:%07lu: ", ident ? ident : "",
7617 7615 ddi_get_lbolt());
7618 7616 va_start(args, fmt);
7619 7617 len += vsnprintf(tbuf + len, 158 - len, fmt, args);
7620 7618 va_end(args);
7621 7619
7622 7620 if (len > 158) {
7623 7621 len = 158;
7624 7622 }
7625 7623 tbuf[len++] = '\n';
7626 7624 tbuf[len] = 0;
7627 7625
7628 7626 mutex_enter(&trace_buf_lock);
7629 7627 bcopy(tbuf, &stmf_trace_buf[trace_buf_curndx], len+1);
7630 7628 trace_buf_curndx += len;
7631 7629 if (trace_buf_curndx > (trace_buf_size - 320))
7632 7630 trace_buf_curndx = 0;
7633 7631 mutex_exit(&trace_buf_lock);
7634 7632 }
7635 7633
7636 7634 void
7637 7635 stmf_trace_clear()
7638 7636 {
7639 7637 if (!stmf_trace_on)
7640 7638 return;
7641 7639 mutex_enter(&trace_buf_lock);
7642 7640 trace_buf_curndx = 0;
7643 7641 if (trace_buf_size > 0)
7644 7642 stmf_trace_buf[0] = 0;
7645 7643 mutex_exit(&trace_buf_lock);
7646 7644 }
7647 7645
7648 7646 static void
7649 7647 stmf_abort_task_offline(scsi_task_t *task, int offline_lu, char *info)
7650 7648 {
7651 7649 stmf_state_change_info_t change_info;
7652 7650 void *ctl_private;
7653 7651 uint32_t ctl_cmd;
7654 7652 int msg = 0;
7655 7653
7656 7654 stmf_trace("FROM STMF", "abort_task_offline called for %s: %s",
7657 7655 offline_lu ? "LU" : "LPORT", info ? info : "no additional info");
7658 7656 change_info.st_additional_info = info;
7659 7657 if (offline_lu) {
7660 7658 change_info.st_rflags = STMF_RFLAG_RESET |
7661 7659 STMF_RFLAG_LU_ABORT;
7662 7660 ctl_private = task->task_lu;
7663 7661 if (((stmf_i_lu_t *)
7664 7662 task->task_lu->lu_stmf_private)->ilu_state ==
7665 7663 STMF_STATE_ONLINE) {
7666 7664 msg = 1;
7667 7665 }
7668 7666 ctl_cmd = STMF_CMD_LU_OFFLINE;
7669 7667 } else {
7670 7668 change_info.st_rflags = STMF_RFLAG_RESET |
7671 7669 STMF_RFLAG_LPORT_ABORT;
7672 7670 ctl_private = task->task_lport;
7673 7671 if (((stmf_i_local_port_t *)
7674 7672 task->task_lport->lport_stmf_private)->ilport_state ==
7675 7673 STMF_STATE_ONLINE) {
7676 7674 msg = 1;
7677 7675 }
7678 7676 ctl_cmd = STMF_CMD_LPORT_OFFLINE;
7679 7677 }
7680 7678
7681 7679 if (msg) {
7682 7680 stmf_trace(0, "Calling stmf_ctl to offline %s : %s",
7683 7681 offline_lu ? "LU" : "LPORT", info ? info :
7684 7682 "<no additional info>");
7685 7683 }
7686 7684 (void) stmf_ctl(ctl_cmd, ctl_private, &change_info);
7687 7685 }
7688 7686
7689 7687 static char
7690 7688 stmf_ctoi(char c)
7691 7689 {
7692 7690 if ((c >= '0') && (c <= '9'))
7693 7691 c -= '0';
7694 7692 else if ((c >= 'A') && (c <= 'F'))
7695 7693 c = c - 'A' + 10;
7696 7694 else if ((c >= 'a') && (c <= 'f'))
7697 7695 c = c - 'a' + 10;
7698 7696 else
7699 7697 c = -1;
7700 7698 return (c);
7701 7699 }
7702 7700
7703 7701 /* Convert from Hex value in ASCII format to the equivalent bytes */
7704 7702 static boolean_t
7705 7703 stmf_base16_str_to_binary(char *c, int dplen, uint8_t *dp)
7706 7704 {
7707 7705 int ii;
7708 7706
7709 7707 for (ii = 0; ii < dplen; ii++) {
7710 7708 char nibble1, nibble2;
7711 7709 char enc_char = *c++;
7712 7710 nibble1 = stmf_ctoi(enc_char);
7713 7711
7714 7712 enc_char = *c++;
7715 7713 nibble2 = stmf_ctoi(enc_char);
7716 7714 if (nibble1 == -1 || nibble2 == -1)
7717 7715 return (B_FALSE);
7718 7716
7719 7717 dp[ii] = (nibble1 << 4) | nibble2;
7720 7718 }
7721 7719 return (B_TRUE);
7722 7720 }
7723 7721
7724 7722 boolean_t
7725 7723 stmf_scsilib_tptid_validate(scsi_transport_id_t *tptid, uint32_t total_sz,
7726 7724 uint16_t *tptid_sz)
7727 7725 {
7728 7726 uint16_t tpd_len = SCSI_TPTID_SIZE;
7729 7727
7730 7728 if (tptid_sz)
7731 7729 *tptid_sz = 0;
7732 7730 if (total_sz < sizeof (scsi_transport_id_t))
7733 7731 return (B_FALSE);
7734 7732
7735 7733 switch (tptid->protocol_id) {
7736 7734
7737 7735 case PROTOCOL_FIBRE_CHANNEL:
7738 7736 /* FC Transport ID validation checks. SPC3 rev23, Table 284 */
7739 7737 if (total_sz < tpd_len || tptid->format_code != 0)
7740 7738 return (B_FALSE);
7741 7739 break;
7742 7740
7743 7741 case PROTOCOL_iSCSI:
7744 7742 {
7745 7743 iscsi_transport_id_t *iscsiid;
7746 7744 uint16_t adn_len, name_len;
7747 7745
7748 7746 /* Check for valid format code, SPC3 rev 23 Table 288 */
7749 7747 if ((total_sz < tpd_len) ||
7750 7748 (tptid->format_code != 0 && tptid->format_code != 1))
7751 7749 return (B_FALSE);
7752 7750
7753 7751 iscsiid = (iscsi_transport_id_t *)tptid;
7754 7752 adn_len = READ_SCSI16(iscsiid->add_len, uint16_t);
7755 7753 tpd_len = sizeof (iscsi_transport_id_t) + adn_len - 1;
7756 7754
7757 7755 /*
7758 7756 * iSCSI Transport ID validation checks.
7759 7757 * As per SPC3 rev 23 Section 7.5.4.6 and Table 289 & Table 290
7760 7758 */
7761 7759 if (adn_len < 20 || (adn_len % 4 != 0))
7762 7760 return (B_FALSE);
7763 7761
7764 7762 name_len = strnlen(iscsiid->iscsi_name, adn_len);
7765 7763 if (name_len == 0 || name_len >= adn_len)
7766 7764 return (B_FALSE);
7767 7765
7768 7766 /* If the format_code is 1 check for ISID seperator */
7769 7767 if ((tptid->format_code == 1) && (strstr(iscsiid->iscsi_name,
7770 7768 SCSI_TPTID_ISCSI_ISID_SEPERATOR) == NULL))
7771 7769 return (B_FALSE);
7772 7770
7773 7771 }
7774 7772 break;
7775 7773
7776 7774 case PROTOCOL_SRP:
7777 7775 /* SRP Transport ID validation checks. SPC3 rev23, Table 287 */
7778 7776 if (total_sz < tpd_len || tptid->format_code != 0)
7779 7777 return (B_FALSE);
7780 7778 break;
7781 7779
7782 7780 case PROTOCOL_PARALLEL_SCSI:
7783 7781 case PROTOCOL_SSA:
7784 7782 case PROTOCOL_IEEE_1394:
7785 7783 case PROTOCOL_SAS:
7786 7784 case PROTOCOL_ADT:
7787 7785 case PROTOCOL_ATAPI:
7788 7786 default:
7789 7787 {
7790 7788 stmf_dflt_scsi_tptid_t *dflttpd;
7791 7789
7792 7790 tpd_len = sizeof (stmf_dflt_scsi_tptid_t);
7793 7791 if (total_sz < tpd_len)
7794 7792 return (B_FALSE);
7795 7793 dflttpd = (stmf_dflt_scsi_tptid_t *)tptid;
7796 7794 tpd_len = tpd_len + SCSI_READ16(&dflttpd->ident_len) - 1;
7797 7795 if (total_sz < tpd_len)
7798 7796 return (B_FALSE);
7799 7797 }
7800 7798 break;
7801 7799 }
7802 7800 if (tptid_sz)
7803 7801 *tptid_sz = tpd_len;
7804 7802 return (B_TRUE);
7805 7803 }
7806 7804
7807 7805 boolean_t
7808 7806 stmf_scsilib_tptid_compare(scsi_transport_id_t *tpd1,
7809 7807 scsi_transport_id_t *tpd2)
7810 7808 {
7811 7809 if ((tpd1->protocol_id != tpd2->protocol_id) ||
7812 7810 (tpd1->format_code != tpd2->format_code))
7813 7811 return (B_FALSE);
7814 7812
7815 7813 switch (tpd1->protocol_id) {
7816 7814
7817 7815 case PROTOCOL_iSCSI:
7818 7816 {
7819 7817 iscsi_transport_id_t *iscsitpd1, *iscsitpd2;
7820 7818 uint16_t len;
7821 7819
7822 7820 iscsitpd1 = (iscsi_transport_id_t *)tpd1;
7823 7821 iscsitpd2 = (iscsi_transport_id_t *)tpd2;
7824 7822 len = SCSI_READ16(&iscsitpd1->add_len);
7825 7823 if ((memcmp(iscsitpd1->add_len, iscsitpd2->add_len, 2) != 0) ||
7826 7824 (memcmp(iscsitpd1->iscsi_name, iscsitpd2->iscsi_name, len)
7827 7825 != 0))
7828 7826 return (B_FALSE);
7829 7827 }
7830 7828 break;
7831 7829
7832 7830 case PROTOCOL_SRP:
7833 7831 {
7834 7832 scsi_srp_transport_id_t *srptpd1, *srptpd2;
7835 7833
7836 7834 srptpd1 = (scsi_srp_transport_id_t *)tpd1;
7837 7835 srptpd2 = (scsi_srp_transport_id_t *)tpd2;
7838 7836 if (memcmp(srptpd1->srp_name, srptpd2->srp_name,
7839 7837 sizeof (srptpd1->srp_name)) != 0)
7840 7838 return (B_FALSE);
7841 7839 }
7842 7840 break;
7843 7841
7844 7842 case PROTOCOL_FIBRE_CHANNEL:
7845 7843 {
7846 7844 scsi_fc_transport_id_t *fctpd1, *fctpd2;
7847 7845
7848 7846 fctpd1 = (scsi_fc_transport_id_t *)tpd1;
7849 7847 fctpd2 = (scsi_fc_transport_id_t *)tpd2;
7850 7848 if (memcmp(fctpd1->port_name, fctpd2->port_name,
7851 7849 sizeof (fctpd1->port_name)) != 0)
7852 7850 return (B_FALSE);
7853 7851 }
7854 7852 break;
7855 7853
7856 7854 case PROTOCOL_PARALLEL_SCSI:
7857 7855 case PROTOCOL_SSA:
7858 7856 case PROTOCOL_IEEE_1394:
7859 7857 case PROTOCOL_SAS:
7860 7858 case PROTOCOL_ADT:
7861 7859 case PROTOCOL_ATAPI:
7862 7860 default:
7863 7861 {
7864 7862 stmf_dflt_scsi_tptid_t *dflt1, *dflt2;
7865 7863 uint16_t len;
7866 7864
7867 7865 dflt1 = (stmf_dflt_scsi_tptid_t *)tpd1;
7868 7866 dflt2 = (stmf_dflt_scsi_tptid_t *)tpd2;
7869 7867 len = SCSI_READ16(&dflt1->ident_len);
7870 7868 if ((memcmp(dflt1->ident_len, dflt2->ident_len, 2) != 0) ||
7871 7869 (memcmp(dflt1->ident, dflt2->ident, len) != 0))
7872 7870 return (B_FALSE);
7873 7871 }
7874 7872 break;
7875 7873 }
7876 7874 return (B_TRUE);
7877 7875 }
7878 7876
7879 7877 /*
7880 7878 * Changes devid_desc to corresponding TransportID format
7881 7879 * Returns :- pointer to stmf_remote_port_t
7882 7880 * Note :- Allocates continous memory for stmf_remote_port_t and TransportID,
7883 7881 * This memory need to be freed when this remote_port is no longer
7884 7882 * used.
7885 7883 */
7886 7884 stmf_remote_port_t *
7887 7885 stmf_scsilib_devid_to_remote_port(scsi_devid_desc_t *devid)
7888 7886 {
7889 7887 struct scsi_fc_transport_id *fc_tpd;
7890 7888 struct iscsi_transport_id *iscsi_tpd;
7891 7889 struct scsi_srp_transport_id *srp_tpd;
7892 7890 struct stmf_dflt_scsi_tptid *dflt_tpd;
7893 7891 uint16_t ident_len, sz = 0;
7894 7892 stmf_remote_port_t *rpt = NULL;
7895 7893
7896 7894 ident_len = devid->ident_length;
7897 7895 ASSERT(ident_len);
7898 7896 switch (devid->protocol_id) {
7899 7897 case PROTOCOL_FIBRE_CHANNEL:
7900 7898 sz = sizeof (scsi_fc_transport_id_t);
7901 7899 rpt = stmf_remote_port_alloc(sz);
7902 7900 rpt->rport_tptid->format_code = 0;
7903 7901 rpt->rport_tptid->protocol_id = devid->protocol_id;
7904 7902 fc_tpd = (scsi_fc_transport_id_t *)rpt->rport_tptid;
7905 7903 /*
7906 7904 * convert from "wwn.xxxxxxxxxxxxxxxx" to 8-byte binary
7907 7905 * skip first 4 byte for "wwn."
7908 7906 */
7909 7907 ASSERT(strncmp("wwn.", (char *)devid->ident, 4) == 0);
7910 7908 if ((ident_len < SCSI_TPTID_FC_PORT_NAME_SIZE * 2 + 4) ||
7911 7909 !stmf_base16_str_to_binary((char *)devid->ident + 4,
7912 7910 SCSI_TPTID_FC_PORT_NAME_SIZE, fc_tpd->port_name))
7913 7911 goto devid_to_remote_port_fail;
7914 7912 break;
7915 7913
7916 7914 case PROTOCOL_iSCSI:
7917 7915 sz = ALIGNED_TO_8BYTE_BOUNDARY(sizeof (iscsi_transport_id_t) +
7918 7916 ident_len - 1);
7919 7917 rpt = stmf_remote_port_alloc(sz);
7920 7918 rpt->rport_tptid->format_code = 0;
7921 7919 rpt->rport_tptid->protocol_id = devid->protocol_id;
7922 7920 iscsi_tpd = (iscsi_transport_id_t *)rpt->rport_tptid;
7923 7921 SCSI_WRITE16(iscsi_tpd->add_len, ident_len);
7924 7922 (void) memcpy(iscsi_tpd->iscsi_name, devid->ident, ident_len);
7925 7923 break;
7926 7924
7927 7925 case PROTOCOL_SRP:
7928 7926 sz = sizeof (scsi_srp_transport_id_t);
7929 7927 rpt = stmf_remote_port_alloc(sz);
7930 7928 rpt->rport_tptid->format_code = 0;
7931 7929 rpt->rport_tptid->protocol_id = devid->protocol_id;
7932 7930 srp_tpd = (scsi_srp_transport_id_t *)rpt->rport_tptid;
7933 7931 /*
7934 7932 * convert from "eui.xxxxxxxxxxxxxxx" to 8-byte binary
7935 7933 * skip first 4 byte for "eui."
7936 7934 * Assume 8-byte initiator-extension part of srp_name is NOT
7937 7935 * stored in devid and hence will be set as zero
7938 7936 */
7939 7937 ASSERT(strncmp("eui.", (char *)devid->ident, 4) == 0);
7940 7938 if ((ident_len < (SCSI_TPTID_SRP_PORT_NAME_LEN - 8) * 2 + 4) ||
7941 7939 !stmf_base16_str_to_binary((char *)devid->ident+4,
7942 7940 SCSI_TPTID_SRP_PORT_NAME_LEN, srp_tpd->srp_name))
7943 7941 goto devid_to_remote_port_fail;
7944 7942 break;
7945 7943
7946 7944 case PROTOCOL_PARALLEL_SCSI:
7947 7945 case PROTOCOL_SSA:
7948 7946 case PROTOCOL_IEEE_1394:
7949 7947 case PROTOCOL_SAS:
7950 7948 case PROTOCOL_ADT:
7951 7949 case PROTOCOL_ATAPI:
7952 7950 default :
7953 7951 ident_len = devid->ident_length;
7954 7952 sz = ALIGNED_TO_8BYTE_BOUNDARY(sizeof (stmf_dflt_scsi_tptid_t) +
7955 7953 ident_len - 1);
7956 7954 rpt = stmf_remote_port_alloc(sz);
7957 7955 rpt->rport_tptid->format_code = 0;
7958 7956 rpt->rport_tptid->protocol_id = devid->protocol_id;
7959 7957 dflt_tpd = (stmf_dflt_scsi_tptid_t *)rpt->rport_tptid;
7960 7958 SCSI_WRITE16(dflt_tpd->ident_len, ident_len);
7961 7959 (void) memcpy(dflt_tpd->ident, devid->ident, ident_len);
7962 7960 break;
7963 7961 }
7964 7962 return (rpt);
7965 7963
7966 7964 devid_to_remote_port_fail:
7967 7965 stmf_remote_port_free(rpt);
7968 7966 return (NULL);
7969 7967
7970 7968 }
7971 7969
7972 7970 stmf_remote_port_t *
7973 7971 stmf_remote_port_alloc(uint16_t tptid_sz) {
7974 7972 stmf_remote_port_t *rpt;
7975 7973 rpt = (stmf_remote_port_t *)kmem_zalloc(
7976 7974 sizeof (stmf_remote_port_t) + tptid_sz, KM_SLEEP);
7977 7975 rpt->rport_tptid_sz = tptid_sz;
7978 7976 rpt->rport_tptid = (scsi_transport_id_t *)(rpt + 1);
7979 7977 return (rpt);
7980 7978 }
7981 7979
7982 7980 void
7983 7981 stmf_remote_port_free(stmf_remote_port_t *rpt)
7984 7982 {
7985 7983 /*
7986 7984 * Note: stmf_scsilib_devid_to_remote_port() function allocates
7987 7985 * remote port structures for all transports in the same way, So
7988 7986 * it is safe to deallocate it in a protocol independent manner.
7989 7987 * If any of the allocation method changes, corresponding changes
7990 7988 * need to be made here too.
7991 7989 */
7992 7990 kmem_free(rpt, sizeof (stmf_remote_port_t) + rpt->rport_tptid_sz);
7993 7991 }
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