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5045 use atomic_{inc,dec}_* instead of atomic_add_*
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--- old/usr/src/uts/common/io/fibre-channel/fca/fcoei/fcoei.c
+++ new/usr/src/uts/common/io/fibre-channel/fca/fcoei/fcoei.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 /*
23 23 * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
24 24 */
25 25
26 26 #include <sys/conf.h>
27 27 #include <sys/ddi.h>
28 28 #include <sys/stat.h>
29 29 #include <sys/pci.h>
30 30 #include <sys/sunddi.h>
31 31 #include <sys/modctl.h>
32 32 #include <sys/file.h>
33 33 #include <sys/cred.h>
34 34 #include <sys/byteorder.h>
35 35 #include <sys/atomic.h>
36 36 #include <sys/scsi/scsi.h>
37 37 #include <sys/mac_client.h>
38 38 #include <sys/modhash.h>
39 39
40 40 /*
41 41 * leadville header files
42 42 */
43 43 #include <sys/fibre-channel/fc.h>
44 44 #include <sys/fibre-channel/impl/fc_fcaif.h>
45 45
46 46 /*
47 47 * fcoe header files
48 48 */
49 49 #include <sys/fcoe/fcoe_common.h>
50 50
51 51 /*
52 52 * fcoei header files
53 53 */
54 54 #include <fcoei.h>
55 55
56 56 /*
57 57 * forward declaration of stack functions
58 58 */
59 59 static uint32_t fcoei_xch_check(
60 60 mod_hash_key_t key, mod_hash_val_t *val, void *arg);
61 61 static int fcoei_attach(dev_info_t *dip, ddi_attach_cmd_t cmd);
62 62 static int fcoei_detach(dev_info_t *dip, ddi_detach_cmd_t cmd);
63 63 static int fcoei_open(dev_t *devp, int flag, int otype, cred_t *credp);
64 64 static int fcoei_close(dev_t dev, int flag, int otype, cred_t *credp);
65 65 static int fcoei_ioctl(
66 66 dev_t dev, int cmd, intptr_t data, int mode, cred_t *credp, int *rval);
67 67 static int fcoei_attach_init(fcoei_soft_state_t *ss);
68 68 static int fcoei_detach_uninit(fcoei_soft_state_t *ss);
69 69 static void fcoei_watchdog(void *arg);
70 70 static void fcoei_process_events(fcoei_soft_state_t *ss);
71 71 static void fcoei_trigger_fp_attach(void *arg);
72 72 static void fcoei_abts_exchange(fcoei_exchange_t *xch);
73 73 static void fcoei_clear_watchdog_jobs(fcoei_soft_state_t *ss);
74 74
75 75 /*
76 76 * Driver identificaton stuff
77 77 */
78 78 static struct cb_ops fcoei_cb_ops = {
79 79 fcoei_open,
80 80 fcoei_close,
81 81 nodev,
82 82 nodev,
83 83 nodev,
84 84 nodev,
85 85 nodev,
86 86 fcoei_ioctl,
87 87 nodev,
88 88 nodev,
89 89 nodev,
90 90 nochpoll,
91 91 ddi_prop_op,
92 92 0,
93 93 D_MP | D_NEW | D_HOTPLUG,
94 94 CB_REV,
95 95 nodev,
96 96 nodev
97 97 };
98 98
99 99 static struct dev_ops fcoei_ops = {
100 100 DEVO_REV,
101 101 0,
102 102 nodev,
103 103 nulldev,
104 104 nulldev,
105 105 fcoei_attach,
106 106 fcoei_detach,
107 107 nodev,
108 108 &fcoei_cb_ops,
109 109 NULL,
110 110 ddi_power,
111 111 ddi_quiesce_not_needed
112 112 };
113 113
114 114 static struct modldrv modldrv = {
115 115 &mod_driverops,
116 116 FCOEI_NAME_VERSION,
117 117 &fcoei_ops,
118 118 };
119 119
120 120 static struct modlinkage modlinkage = {
121 121 MODREV_1,
122 122 &modldrv,
123 123 NULL
124 124 };
125 125
126 126 /*
127 127 * Driver's global variables
128 128 */
129 129 void *fcoei_state = NULL;
130 130 int fcoei_use_ext_log = 0;
131 131
132 132 /*
133 133 * Common loadable module entry points _init, _fini, _info
134 134 */
135 135 int
136 136 _init(void)
137 137 {
138 138 int ret;
139 139
140 140 ret = ddi_soft_state_init(&fcoei_state, sizeof (fcoei_soft_state_t), 0);
141 141 if (ret != DDI_SUCCESS) {
142 142 FCOEI_LOG(__FUNCTION__, "soft state init failed: %x", ret);
143 143 return (ret);
144 144 }
145 145
146 146 ret = mod_install(&modlinkage);
147 147 if (ret != 0) {
148 148 ddi_soft_state_fini(&fcoei_state);
149 149 FCOEI_LOG(__FUNCTION__, "fcoei mod_install failed: %x", ret);
150 150 return (ret);
151 151 }
152 152
153 153 /*
154 154 * Let FCTL initialize devo_bus_ops
155 155 */
156 156 fc_fca_init(&fcoei_ops);
157 157
158 158 FCOEI_LOG(__FUNCTION__, "fcoei _init succeeded");
159 159 return (ret);
160 160 }
161 161
162 162 int
163 163 _fini(void)
164 164 {
165 165 int ret;
166 166
167 167 ret = mod_remove(&modlinkage);
168 168 if (ret != 0) {
169 169 FCOEI_EXT_LOG(__FUNCTION__, "fcoei mod_remove failed: %x", ret);
170 170 return (ret);
171 171 }
172 172
173 173 ddi_soft_state_fini(&fcoei_state);
174 174 FCOEI_LOG(__FUNCTION__, "fcoei _fini succeeded");
175 175 return (ret);
176 176 }
177 177
178 178 int
179 179 _info(struct modinfo *modinfop)
180 180 {
181 181 return (mod_info(&modlinkage, modinfop));
182 182 }
183 183
184 184 /*
185 185 * Autoconfiguration entry points: attach, detach, getinfo
186 186 */
187 187
188 188 static int
189 189 fcoei_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
190 190 {
191 191 int ret;
192 192 int fcoe_ret;
193 193 int instance;
194 194 fcoei_soft_state_t *ss;
195 195
196 196 instance = ddi_get_instance(dip);
197 197 FCOEI_LOG(__FUNCTION__, "instance is %d", instance);
198 198 switch (cmd) {
199 199 case DDI_ATTACH:
200 200 ret = ddi_soft_state_zalloc(fcoei_state, instance);
201 201 if (ret != DDI_SUCCESS) {
202 202 FCOEI_LOG(__FUNCTION__, "ss zalloc failed: %x", ret);
203 203 return (ret);
204 204 }
205 205
206 206 /*
207 207 * Get the soft state, and do basic initialization with dip
208 208 */
209 209 ss = ddi_get_soft_state(fcoei_state, instance);
210 210 ss->ss_dip = dip;
211 211
212 212 fcoe_ret = fcoei_attach_init(ss);
213 213 if (fcoe_ret != FCOE_SUCCESS) {
214 214 ddi_soft_state_free(fcoei_state, instance);
215 215 FCOEI_LOG(__FUNCTION__, "fcoei_attach_init failed: "
216 216 "%x", fcoe_ret);
217 217 return (DDI_FAILURE);
218 218 }
219 219
220 220 ss->ss_flags |= SS_FLAG_TRIGGER_FP_ATTACH;
221 221 (void) timeout(fcoei_trigger_fp_attach, ss, FCOE_SEC2TICK(1));
222 222 FCOEI_LOG(__FUNCTION__, "fcoei_attach succeeded: dip-%p, "
223 223 "cmd-%x", dip, cmd);
224 224 return (DDI_SUCCESS);
225 225
226 226 case DDI_RESUME:
227 227 return (DDI_SUCCESS);
228 228
229 229 default:
230 230 FCOEI_LOG(__FUNCTION__, "unsupported attach cmd-%X", cmd);
231 231 return (DDI_FAILURE);
232 232 }
233 233 }
234 234
235 235 static int
236 236 fcoei_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
237 237 {
238 238 int fcoe_ret;
239 239 int instance;
240 240 fcoei_soft_state_t *ss;
241 241
242 242 instance = ddi_get_instance(dip);
243 243 ss = ddi_get_soft_state(fcoei_state, instance);
244 244 if (ss == NULL) {
245 245 FCOEI_LOG(__FUNCTION__, "get ss failed: dip-%p", dip);
246 246 return (DDI_FAILURE);
247 247 }
248 248
249 249 switch (cmd) {
250 250 case DDI_DETACH:
251 251 if (ss->ss_flags & SS_FLAG_TRIGGER_FP_ATTACH) {
252 252 FCOEI_LOG(__FUNCTION__, "still await fp attach");
253 253 return (DDI_FAILURE);
254 254 }
255 255
256 256 if (ss->ss_flags & SS_FLAG_LV_BOUND) {
257 257 FCOEI_LOG(__FUNCTION__, "fp is not detached yet");
258 258 return (DDI_FAILURE);
259 259 }
260 260
261 261 fcoe_ret = fcoei_detach_uninit(ss);
262 262 if (fcoe_ret != FCOE_SUCCESS) {
263 263 FCOEI_LOG(__FUNCTION__, "fcoei_detach_uninit failed:"
264 264 " dip-%p, fcoe_ret-%d", dip, fcoe_ret);
265 265 return (DDI_FAILURE);
266 266 }
267 267
268 268 FCOEI_LOG(__FUNCTION__, "succeeded: dip-%p, cmd-%x", dip, cmd);
269 269 return (DDI_SUCCESS);
270 270
271 271 case DDI_SUSPEND:
272 272 return (DDI_SUCCESS);
273 273
274 274 default:
275 275 FCOEI_LOG(__FUNCTION__, "unspported detach cmd-%X", cmd);
276 276 return (DDI_FAILURE);
277 277 }
278 278 }
279 279
280 280 /*
281 281 * Device access entry points: open, close, ioctl
282 282 */
283 283
284 284 static int
285 285 fcoei_open(dev_t *devp, int flag, int otype, cred_t *credp)
286 286 {
287 287 fcoei_soft_state_t *ss;
288 288
289 289 if (otype != OTYP_CHR) {
290 290 FCOEI_LOG(__FUNCTION__, "flag: %x", flag);
291 291 return (EINVAL);
292 292 }
293 293
294 294 if (drv_priv(credp)) {
295 295 return (EPERM);
296 296 }
297 297
298 298 /*
299 299 * First of all, get related soft state
300 300 */
301 301 ss = ddi_get_soft_state(fcoei_state, (int)getminor(*devp));
302 302 if (ss == NULL) {
303 303 return (ENXIO);
304 304 }
305 305
306 306 mutex_enter(&ss->ss_ioctl_mutex);
307 307 if (ss->ss_ioctl_flags & FCOEI_IOCTL_FLAG_OPEN) {
308 308 /*
309 309 * We don't support concurrent open
310 310 */
311 311 mutex_exit(&ss->ss_ioctl_mutex);
312 312 return (EBUSY);
313 313 }
314 314
315 315 ss->ss_ioctl_flags |= FCOEI_IOCTL_FLAG_OPEN;
316 316 mutex_exit(&ss->ss_ioctl_mutex);
317 317
318 318 return (0);
319 319 }
320 320
321 321 static int
322 322 fcoei_close(dev_t dev, int flag, int otype, cred_t *credp)
323 323 {
324 324 fcoei_soft_state_t *ss;
325 325
326 326 if (otype != OTYP_CHR) {
327 327 FCOEI_LOG(__FUNCTION__, "flag: %x, %p", flag, credp);
328 328 return (EINVAL);
329 329 }
330 330
331 331 /*
332 332 * First of all, get related soft state
333 333 */
334 334 ss = ddi_get_soft_state(fcoei_state, (int)getminor(dev));
335 335 if (ss == NULL) {
336 336 return (ENXIO);
337 337 }
338 338
339 339 mutex_enter(&ss->ss_ioctl_mutex);
340 340 if (!(ss->ss_ioctl_flags & FCOEI_IOCTL_FLAG_OPEN)) {
341 341 /*
342 342 * If it's not open, we can exit
343 343 */
344 344
345 345 mutex_exit(&ss->ss_ioctl_mutex);
346 346 return (ENODEV);
347 347 }
348 348
349 349 ss->ss_ioctl_flags &= ~FCOEI_IOCTL_FLAG_OPEN;
350 350 mutex_exit(&ss->ss_ioctl_mutex);
351 351
352 352 return (0);
353 353 }
354 354
355 355 static int
356 356 fcoei_ioctl(dev_t dev, int cmd, intptr_t data, int mode,
357 357 cred_t *credp, int *rval)
358 358 {
359 359 fcoei_soft_state_t *ss;
360 360 int ret = 0;
361 361
362 362 if (drv_priv(credp) != 0) {
363 363 FCOEI_LOG(__FUNCTION__, "data: %p, %x", data, mode);
364 364 return (EPERM);
365 365 }
366 366
367 367 /*
368 368 * Get related soft state
369 369 */
370 370 ss = ddi_get_soft_state(fcoei_state, (int32_t)getminor(dev));
371 371 if (!ss) {
372 372 return (ENXIO);
373 373 }
374 374
375 375 /*
376 376 * Process ioctl
377 377 */
378 378 switch (cmd) {
379 379
380 380 default:
381 381 FCOEI_LOG(__FUNCTION__, "ioctl-0x%02X", cmd);
382 382 ret = ENOTTY;
383 383 }
384 384
385 385 /*
386 386 * Set return value
387 387 */
388 388 *rval = ret;
389 389 return (ret);
390 390 }
391 391
392 392 /*
393 393 * fcoei_attach_init
394 394 * init related stuff of the soft state
395 395 *
396 396 * Input:
397 397 * ss = the soft state that will be processed
398 398 *
399 399 * Return:
400 400 * if it succeeded or not
401 401 *
402 402 * Comment:
403 403 * N/A
404 404 */
405 405 static int
406 406 fcoei_attach_init(fcoei_soft_state_t *ss)
407 407 {
408 408 fcoe_port_t *eport;
409 409 fcoe_client_t client_fcoei;
410 410 char taskq_name[32];
411 411 int ret;
412 412 la_els_logi_t *els = &ss->ss_els_logi;
413 413 svc_param_t *class3_param;
414 414
415 415 /*
416 416 * Register fcoei to FCOE as its client
417 417 */
418 418 client_fcoei.ect_eport_flags = EPORT_FLAG_INI_MODE |
419 419 EPORT_FLAG_IS_DIRECT_P2P;
420 420 client_fcoei.ect_max_fc_frame_size = FCOE_MAX_FC_FRAME_SIZE;
421 421 client_fcoei.ect_private_frame_struct_size = sizeof (fcoei_frame_t);
422 422 fcoei_init_ect_vectors(&client_fcoei);
423 423 client_fcoei.ect_client_port_struct = ss;
424 424 client_fcoei.ect_fcoe_ver = FCOE_VER_NOW;
425 425 FCOEI_LOG(__FUNCTION__, "version: %x %x", FCOE_VER_NOW, fcoe_ver_now);
426 426 ret = ddi_prop_get_int(DDI_DEV_T_ANY, ss->ss_dip,
427 427 DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, "mac_id", -1);
428 428 if (ret == -1) {
429 429 FCOEI_LOG(__FUNCTION__, "get mac_id failed");
430 430 return (DDI_FAILURE);
431 431 } else {
432 432 client_fcoei.ect_channelid = ret;
433 433 }
434 434
435 435 /*
436 436 * It's fcoe's responsiblity to initialize eport's all elements,
437 437 * so we needn't do eport initialization
438 438 */
439 439 eport = fcoe_register_client(&client_fcoei);
440 440 if (eport == NULL) {
441 441 goto fail_register_client;
442 442 } else {
443 443 ss->ss_eport = eport;
444 444 FCOE_SET_DEFAULT_FPORT_ADDR(eport->eport_efh_dst);
445 445 }
446 446
447 447 /*
448 448 * Now it's time to register fca_tran to FCTL
449 449 * Remember fc_local_port is transparent to FCA (fcoei)
450 450 */
451 451 ss->ss_fca_tran.fca_version = FCTL_FCA_MODREV_5;
452 452 ss->ss_fca_tran.fca_numports = 1;
453 453 ss->ss_fca_tran.fca_pkt_size = sizeof (fcoei_exchange_t);
454 454 ss->ss_fca_tran.fca_cmd_max = 2048;
455 455
456 456 /*
457 457 * scsi_tran_hba_setup could need these stuff
458 458 */
459 459 ss->ss_fca_tran.fca_dma_lim = NULL;
460 460 ss->ss_fca_tran.fca_iblock = NULL;
461 461 ss->ss_fca_tran.fca_dma_attr = NULL;
462 462 ss->ss_fca_tran.fca_acc_attr = NULL;
463 463
464 464 /*
465 465 * Initialize vectors
466 466 */
467 467 fcoei_init_fcatran_vectors(&ss->ss_fca_tran);
468 468
469 469 /*
470 470 * fc_fca_attach only sets driver's private, it has nothing to with
471 471 * common port object between fcoei and leadville.
472 472 * After this attach, fp_attach will be triggered, and it will call
473 473 * fca_bind_port to let fcoei to know about common port object.
474 474 */
475 475 if (fc_fca_attach(ss->ss_dip, &ss->ss_fca_tran) != DDI_SUCCESS) {
476 476 goto fail_fca_attach;
477 477 }
478 478
479 479 /*
480 480 * It's time to do ss initialization
481 481 */
482 482 ret = ddi_create_minor_node(ss->ss_dip, "admin",
483 483 S_IFCHR, ddi_get_instance(ss->ss_dip), DDI_NT_NEXUS, 0);
484 484 if (ret != DDI_SUCCESS) {
485 485 goto fail_minor_node;
486 486 }
487 487
488 488 ss->ss_flags = 0;
489 489 ss->ss_port = NULL;
490 490 /*
491 491 * ss->ss_eport has been initialized
492 492 */
493 493
494 494 ss->ss_sol_oxid_hash = mod_hash_create_idhash(
495 495 "fcoei_sol_oxid_hash", FCOEI_SOL_HASH_SIZE,
496 496 mod_hash_null_valdtor);
497 497 ss->ss_unsol_rxid_hash = mod_hash_create_idhash(
498 498 "fcoei_unsol_rxid_hash", FCOEI_UNSOL_HASH_SIZE,
499 499 mod_hash_null_valdtor);
500 500 list_create(&ss->ss_comp_xch_list, sizeof (fcoei_exchange_t),
501 501 offsetof(fcoei_exchange_t, xch_comp_node));
502 502 ss->ss_next_sol_oxid = 0xFFFF;
503 503 ss->ss_next_unsol_rxid = 0xFFFF;
504 504
505 505 mutex_init(&ss->ss_watchdog_mutex, 0, MUTEX_DRIVER, 0);
506 506 cv_init(&ss->ss_watchdog_cv, NULL, CV_DRIVER, NULL);
507 507 (void) snprintf(taskq_name, 32, "leadville_fcoei_%d_taskq",
508 508 ddi_get_instance(ss->ss_dip));
509 509 taskq_name[31] = 0;
510 510 ss->ss_taskq = ddi_taskq_create(ss->ss_dip,
511 511 taskq_name, 64, TASKQ_DEFAULTPRI, DDI_SLEEP);
512 512
513 513 ss->ss_link_state = FC_STATE_OFFLINE;
514 514 ss->ss_link_speed = 0;
515 515 ss->ss_port_event_counter = 0;
516 516
517 517 list_create(&ss->ss_event_list, sizeof (fcoei_event_t),
518 518 offsetof(fcoei_event_t, ae_node));
519 519
520 520 ss->ss_sol_cnt1 = 0;
521 521 ss->ss_sol_cnt2 = 0;
522 522 ss->ss_sol_cnt = &ss->ss_sol_cnt1;
523 523 ss->ss_unsol_cnt1 = 0;
524 524 ss->ss_unsol_cnt2 = 0;
525 525 ss->ss_unsol_cnt = &ss->ss_unsol_cnt1;
526 526 ss->ss_ioctl_flags = 0;
527 527
528 528 mutex_init(&ss->ss_ioctl_mutex, 0, MUTEX_DRIVER, 0);
529 529
530 530 bcopy(eport->eport_portwwn, els->nport_ww_name.raw_wwn, 8);
531 531 bcopy(eport->eport_nodewwn, els->node_ww_name.raw_wwn, 8);
532 532 els->common_service.fcph_version = 0x2008;
533 533 els->common_service.btob_credit = 3;
534 534 els->common_service.cmn_features = 0x8800;
535 535 els->common_service.conc_sequences = 0xff;
536 536 els->common_service.relative_offset = 3;
537 537 els->common_service.e_d_tov = 0x07d0;
538 538 class3_param = (svc_param_t *)&els->class_3;
539 539 class3_param->class_opt = 0x8800;
540 540 class3_param->rcv_size = els->common_service.rx_bufsize = 2048;
541 541 class3_param->conc_sequences = 0xff;
542 542 class3_param->open_seq_per_xchng = 1;
543 543
544 544 /*
545 545 * Fill out RNID Management Information
546 546 */
547 547 bcopy(ss->ss_eport->eport_portwwn, ss->ss_rnid.global_id, 8);
548 548 ss->ss_rnid.unit_type = FCOEI_RNID_HBA;
549 549 ss->ss_rnid.ip_version = FCOEI_RNID_IPV4;
550 550
551 551 /*
552 552 * Start our watchdog
553 553 */
554 554 (void) ddi_taskq_dispatch(ss->ss_taskq,
555 555 fcoei_watchdog, ss, DDI_SLEEP);
556 556 while (!(ss->ss_flags & SS_FLAG_WATCHDOG_RUNNING)) {
557 557 delay(50);
558 558 }
559 559
560 560 /*
561 561 * Report the device to the system
562 562 */
563 563 ddi_report_dev(ss->ss_dip);
564 564 return (DDI_SUCCESS);
565 565
566 566
567 567 fail_minor_node:
568 568 FCOEI_LOG(__FUNCTION__, "fail_minor_node");
569 569 (void) fc_fca_detach(ss->ss_dip);
570 570
571 571 fail_fca_attach:
572 572 eport->eport_deregister_client(eport);
573 573 FCOEI_LOG(__FUNCTION__, "fail_fca_attach");
574 574
575 575 fail_register_client:
576 576 FCOEI_LOG(__FUNCTION__, "fail_register_client");
577 577 return (DDI_FAILURE);
578 578 }
579 579
580 580 /*
581 581 * fcoei_detach_uninit
582 582 * uninit related stuff of the soft state
583 583 *
584 584 * Input:
585 585 * ss = the soft state that will be processed
586 586 *
587 587 * Return:
588 588 * if it succeeded or not
589 589 *
590 590 * Comment:
591 591 * N/A
592 592 */
593 593 int
594 594 fcoei_detach_uninit(fcoei_soft_state_t *ss)
595 595 {
596 596 /*
597 597 * Stop watchdog first
598 598 */
599 599 if (ss->ss_flags & SS_FLAG_WATCHDOG_RUNNING) {
600 600 ss->ss_flags |= SS_FLAG_TERMINATE_WATCHDOG;
601 601 cv_broadcast(&ss->ss_watchdog_cv);
602 602 }
603 603
604 604 /*
605 605 * Destroy the taskq
606 606 */
607 607 ddi_taskq_wait(ss->ss_taskq);
608 608 ddi_taskq_destroy(ss->ss_taskq);
609 609
610 610 /*
611 611 * Release all allocated resources
612 612 */
613 613 mutex_destroy(&ss->ss_ioctl_mutex);
614 614 mutex_destroy(&ss->ss_watchdog_mutex);
615 615 cv_destroy(&ss->ss_watchdog_cv);
616 616 mod_hash_destroy_idhash(ss->ss_sol_oxid_hash);
617 617 mod_hash_destroy_idhash(ss->ss_unsol_rxid_hash);
618 618 list_destroy(&ss->ss_event_list);
619 619 ss->ss_eport->eport_deregister_client(ss->ss_eport);
620 620 ddi_remove_minor_node(ss->ss_dip, NULL);
621 621
622 622 /*
623 623 * Release itself
624 624 */
625 625 ddi_soft_state_free(fcoei_state, ddi_get_instance(ss->ss_dip));
626 626 return (FCOE_SUCCESS);
627 627 }
628 628
629 629 /*
630 630 * fcoei_watchdog
631 631 * Perform periodic checking and routine tasks
632 632 *
633 633 * Input:
634 634 * arg = the soft state that will be processed
635 635 *
636 636 * Return:
637 637 * N/A
638 638 *
639 639 * Comment:
640 640 * N/A
641 641 */
642 642 static void
643 643 fcoei_watchdog(void *arg)
644 644 {
645 645 fcoei_soft_state_t *ss;
646 646 clock_t tmp_delay;
647 647 clock_t start_clock;
648 648 clock_t last_clock;
649 649
650 650 /*
651 651 * For debugging
652 652 */
653 653 ss = (fcoei_soft_state_t *)arg;
654 654 FCOEI_LOG(__FUNCTION__, "ss %p", ss);
655 655 FCOEI_LOG(__FUNCTION__, "sol_hash %p", ss->ss_sol_oxid_hash);
656 656 FCOEI_LOG(__FUNCTION__, "unsol_hash %p", ss->ss_unsol_rxid_hash);
657 657 ss->ss_flags |= SS_FLAG_WATCHDOG_RUNNING;
658 658 tmp_delay = FCOE_SEC2TICK(1) / 2;
659 659 last_clock = CURRENT_CLOCK;
660 660
661 661 /*
662 662 * If nobody reqeusts to terminate the watchdog, we will work forever
663 663 */
664 664 while (!(ss->ss_flags & SS_FLAG_TERMINATE_WATCHDOG)) {
665 665 /*
666 666 * We handle all asynchronous events serially
667 667 */
668 668 fcoei_process_events(ss);
669 669
670 670 /*
671 671 * To avoid to check timing too freqently, we check
672 672 * if we need skip timing stuff.
673 673 */
674 674 start_clock = CURRENT_CLOCK;
675 675 if ((start_clock - last_clock) < tmp_delay) {
676 676 goto end_timing;
677 677 } else {
678 678 last_clock = start_clock;
679 679 }
680 680
681 681 /*
682 682 * It's time to do timeout checking of solicited exchanges
683 683 */
684 684 if (ss->ss_sol_cnt == (&ss->ss_sol_cnt1)) {
685 685 if (ss->ss_sol_cnt2 == 0) {
686 686 ss->ss_sol_cnt = &ss->ss_sol_cnt2;
687 687 } else {
688 688 mod_hash_walk(ss->ss_sol_oxid_hash,
689 689 fcoei_xch_check, ss);
690 690 }
691 691 } else {
692 692 if (ss->ss_sol_cnt1 == 0) {
693 693 ss->ss_sol_cnt = &ss->ss_sol_cnt1;
694 694 } else {
695 695 mod_hash_walk(ss->ss_sol_oxid_hash,
696 696 fcoei_xch_check, ss);
697 697 }
698 698 }
699 699
700 700 /*
701 701 * It's time to do timeout checking of unsolicited exchange
702 702 */
703 703 if (ss->ss_unsol_cnt == (&ss->ss_unsol_cnt1)) {
704 704 if (ss->ss_unsol_cnt2 == 0) {
705 705 ss->ss_unsol_cnt = &ss->ss_unsol_cnt2;
706 706 } else {
707 707 mod_hash_walk(ss->ss_unsol_rxid_hash,
708 708 fcoei_xch_check, ss);
709 709 }
710 710 } else {
711 711 if (ss->ss_unsol_cnt1 == 0) {
712 712 ss->ss_unsol_cnt = &ss->ss_unsol_cnt1;
713 713 } else {
714 714 mod_hash_walk(ss->ss_unsol_rxid_hash,
715 715 fcoei_xch_check, ss);
716 716 }
717 717 }
718 718
719 719 /*
720 720 * Check if there are exchanges which are ready to complete
721 721 */
722 722 fcoei_handle_comp_xch_list(ss);
723 723
724 724 end_timing:
725 725 /*
726 726 * Wait for next cycle
727 727 */
728 728 mutex_enter(&ss->ss_watchdog_mutex);
729 729 ss->ss_flags |= SS_FLAG_WATCHDOG_IDLE;
730 730 if (!list_is_empty(&ss->ss_event_list)) {
731 731 goto skip_wait;
732 732 }
733 733
734 734 (void) cv_timedwait(&ss->ss_watchdog_cv,
735 735 &ss->ss_watchdog_mutex, CURRENT_CLOCK +
736 736 (clock_t)tmp_delay);
737 737 skip_wait:
738 738 ss->ss_flags &= ~SS_FLAG_WATCHDOG_IDLE;
739 739 mutex_exit(&ss->ss_watchdog_mutex);
740 740 }
741 741
742 742 /*
743 743 * Do clear work before exit
744 744 */
745 745 fcoei_clear_watchdog_jobs(ss);
746 746
747 747 /*
748 748 * Watchdog has stopped
749 749 */
750 750 ss->ss_flags &= ~SS_FLAG_WATCHDOG_RUNNING;
751 751 }
752 752
753 753 static void
754 754 fcoei_clear_watchdog_jobs(fcoei_soft_state_t *ss)
755 755 {
756 756 fcoei_event_t *ae;
757 757 fcoe_frame_t *frm;
758 758
759 759 mutex_enter(&ss->ss_watchdog_mutex);
760 760 while (!list_is_empty(&ss->ss_event_list)) {
761 761 ae = (fcoei_event_t *)list_head(&ss->ss_event_list);
762 762 list_remove(&ss->ss_event_list, ae);
763 763 switch (ae->ae_type) {
764 764 case AE_EVENT_SOL_FRAME:
765 765 frm = (fcoe_frame_t *)ae->ae_obj;
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766 766 frm->frm_eport->eport_release_frame(frm);
767 767 break;
768 768
769 769 case AE_EVENT_UNSOL_FRAME:
770 770 frm = (fcoe_frame_t *)ae->ae_obj;
771 771 frm->frm_eport->eport_free_netb(frm->frm_netb);
772 772 frm->frm_eport->eport_release_frame(frm);
773 773 break;
774 774
775 775 case AE_EVENT_PORT:
776 - atomic_add_32(&ss->ss_port_event_counter, -1);
776 + atomic_dec_32(&ss->ss_port_event_counter);
777 777 /* FALLTHROUGH */
778 778
779 779 case AE_EVENT_RESET:
780 780 kmem_free(ae, sizeof (fcoei_event_t));
781 781 break;
782 782
783 783 case AE_EVENT_EXCHANGE:
784 784 /* FALLTHROUGH */
785 785
786 786 default:
787 787 break;
788 788 }
789 789 }
790 790
791 791 mod_hash_clear(ss->ss_unsol_rxid_hash);
792 792 mod_hash_clear(ss->ss_sol_oxid_hash);
793 793
794 794 while (!list_is_empty(&ss->ss_comp_xch_list)) {
795 795 (void) list_remove_head(&ss->ss_comp_xch_list);
796 796 }
797 797 mutex_exit(&ss->ss_watchdog_mutex);
798 798 }
799 799
800 800 /*
801 801 * fcoei_process_events
802 802 * Process the events one by one
803 803 *
804 804 * Input:
805 805 * ss = the soft state that will be processed
806 806 *
807 807 * Return:
808 808 * N/A
809 809 *
810 810 * Comment:
811 811 * N/A
812 812 */
813 813 static void
814 814 fcoei_process_events(fcoei_soft_state_t *ss)
815 815 {
816 816 fcoei_event_t *ae = NULL;
817 817
818 818 /*
819 819 * It's the only place to delete node from ss_event_list, so we needn't
820 820 * hold mutex to check if the list is empty.
821 821 */
822 822 ASSERT(!MUTEX_HELD(&ss->ss_watchdog_mutex));
823 823 while (list_is_empty(&ss->ss_event_list) == B_FALSE) {
824 824 mutex_enter(&ss->ss_watchdog_mutex);
825 825 ae = (fcoei_event_t *)list_remove_head(&ss->ss_event_list);
826 826 mutex_exit(&ss->ss_watchdog_mutex);
827 827
828 828 switch (ae->ae_type) {
829 829 case AE_EVENT_SOL_FRAME:
830 830 fcoei_handle_sol_frame_done((fcoe_frame_t *)ae->ae_obj);
831 831 break;
832 832
833 833 case AE_EVENT_UNSOL_FRAME:
834 834 fcoei_process_unsol_frame((fcoe_frame_t *)ae->ae_obj);
835 835 break;
836 836
837 837 case AE_EVENT_EXCHANGE:
838 838 fcoei_process_event_exchange(ae);
839 839 break;
840 840
841 841 case AE_EVENT_PORT:
842 842 fcoei_process_event_port(ae);
843 843 break;
844 844
845 845 case AE_EVENT_RESET:
846 846 fcoei_process_event_reset(ae);
847 847 break;
848 848
849 849 default:
850 850 FCOEI_LOG(__FUNCTION__, "unsupported events");
851 851 }
852 852
853 853 }
854 854 }
855 855
856 856 /*
857 857 * fcoei_handle_tmout_xch_list
858 858 * Complete every exchange in the timed-out xch list of the soft state
859 859 *
860 860 * Input:
861 861 * ss = the soft state that need be handled
862 862 *
863 863 * Return:
864 864 * N/A
865 865 *
866 866 * Comment:
867 867 * When mod_hash_walk is in progress, we can't change the hashtable.
868 868 * This is post-walk handling of exchange timing
869 869 */
870 870 void
871 871 fcoei_handle_comp_xch_list(fcoei_soft_state_t *ss)
872 872 {
873 873 fcoei_exchange_t *xch = NULL;
874 874
875 875 while ((xch = list_remove_head(&ss->ss_comp_xch_list)) != NULL) {
876 876 fcoei_complete_xch(xch, NULL, xch->xch_fpkt->pkt_state,
877 877 xch->xch_fpkt->pkt_reason);
878 878 }
879 879 }
880 880
881 881 /*
882 882 * fcoei_xch_check
883 883 * Check if the exchange timed out or link is down
884 884 *
885 885 * Input:
886 886 * key = rxid of the unsolicited exchange
887 887 * val = the unsolicited exchange
888 888 * arg = the soft state
889 889 *
890 890 * Return:
891 891 * MH_WALK_CONTINUE = continue to walk
892 892 *
893 893 * Comment:
894 894 * We need send ABTS for timed-out for solicited exchange
895 895 * If it's solicited FLOGI, we need set SS_FLAG_FLOGI_FAILED
896 896 * If the link is down, we think it has timed out too.
897 897 */
898 898 /* ARGSUSED */
899 899 static uint32_t
900 900 fcoei_xch_check(mod_hash_key_t key, mod_hash_val_t *val, void *arg)
901 901 {
902 902 fcoei_exchange_t *xch = (fcoei_exchange_t *)val;
903 903
904 904 ASSERT(xch->xch_ss == arg);
905 905 if ((xch->xch_end_tick < CURRENT_CLOCK) &&
906 906 (xch->xch_ss->ss_link_state != FC_STATE_OFFLINE)) {
907 907 if (xch->xch_flags & XCH_FLAG_IN_SOL_HASH) {
908 908 ASSERT(xch->xch_oxid == CMHK(key));
909 909 /*
910 910 * It's solicited exchange
911 911 */
912 912 fcoei_abts_exchange(xch);
913 913 if (LA_ELS_FLOGI == ((ls_code_t *)(void *)
914 914 xch->xch_fpkt->pkt_cmd)->ls_code) {
915 915 /*
916 916 * It's solicited FLOGI
917 917 */
918 918 xch->xch_ss->ss_flags |= SS_FLAG_FLOGI_FAILED;
919 919 }
920 920 }
921 921
922 922 FCOEI_LOG(__FUNCTION__, "oxid-%x/rxid-%x timed out",
923 923 xch->xch_oxid, xch->xch_rxid);
924 924 xch->xch_flags |= XCH_FLAG_TMOUT;
925 925 xch->xch_fpkt->pkt_state = FC_PKT_TIMEOUT;
926 926 xch->xch_fpkt->pkt_reason = FC_REASON_ABORTED;
927 927 list_insert_tail(&xch->xch_ss->ss_comp_xch_list, xch);
928 928 } else if (xch->xch_ss->ss_link_state == FC_STATE_OFFLINE) {
929 929 FCOEI_LOG(__FUNCTION__, "oxid-%x/rxid-%x offline complete",
930 930 xch->xch_oxid, xch->xch_rxid);
931 931 xch->xch_flags |= XCH_FLAG_TMOUT;
932 932 xch->xch_fpkt->pkt_state = FC_PKT_PORT_OFFLINE;
933 933 xch->xch_fpkt->pkt_reason = FC_REASON_OFFLINE;
934 934 list_insert_tail(&xch->xch_ss->ss_comp_xch_list, xch);
935 935 }
936 936
937 937 return (MH_WALK_CONTINUE);
938 938 }
939 939
940 940 /*
941 941 * fcoei_init_ifm
942 942 * initialize fcoei_frame
943 943 *
944 944 * Input:
945 945 * frm = the frame that ifm need link to
946 946 * xch = the exchange that ifm need link to
947 947 *
948 948 * Return:
949 949 * N/A
950 950 *
951 951 * Comment:
952 952 * For solicited frames, it's called after FC frame header initialization
953 953 * For unsolicited frames, it's called just after the frame enters fcoei
954 954 */
955 955 void
956 956 fcoei_init_ifm(fcoe_frame_t *frm, fcoei_exchange_t *xch)
957 957 {
958 958 FRM2IFM(frm)->ifm_frm = frm;
959 959 FRM2IFM(frm)->ifm_xch = xch;
960 960 FRM2IFM(frm)->ifm_rctl = FRM_R_CTL(frm);
961 961 }
962 962
963 963 /*
964 964 * fcoei_trigger_fp_attach
965 965 * Trigger fp_attach for this fcoei port
966 966 *
967 967 * Input:
968 968 * arg = the soft state that fp will attach
969 969 *
970 970 * Return:
971 971 * N/A
972 972 *
973 973 * Comment:
974 974 * N/A
975 975 */
976 976 static void
977 977 fcoei_trigger_fp_attach(void * arg)
978 978 {
979 979 fcoei_soft_state_t *ss = (fcoei_soft_state_t *)arg;
980 980 dev_info_t *child = NULL;
981 981 int rval = NDI_FAILURE;
982 982
983 983 ndi_devi_alloc_sleep(ss->ss_dip, "fp", DEVI_PSEUDO_NODEID, &child);
984 984 if (child == NULL) {
985 985 FCOEI_LOG(__FUNCTION__, "can't alloc dev_info");
986 986 return;
987 987 }
988 988
989 989 /*
990 990 * fp/fctl need this property
991 991 */
992 992 if (ddi_prop_update_string(DDI_DEV_T_NONE, child,
993 993 "bus-addr", "0,0") != DDI_PROP_SUCCESS) {
994 994 FCOEI_LOG(__FUNCTION__, "update bus-addr failed");
995 995 (void) ndi_devi_free(child);
996 996 return;
997 997 }
998 998
999 999 /*
1000 1000 * If it's physical HBA, fp.conf will register the property.
1001 1001 * fcoei is one software HBA, so we need register it manually
1002 1002 */
1003 1003 if (ddi_prop_update_int(DDI_DEV_T_NONE, child,
1004 1004 "port", 0) != DDI_PROP_SUCCESS) {
1005 1005 FCOEI_LOG(__FUNCTION__, "update port failed");
1006 1006 (void) ndi_devi_free(child);
1007 1007 return;
1008 1008 }
1009 1009
1010 1010 /*
1011 1011 * It will call fp_attach eventually
1012 1012 */
1013 1013 rval = ndi_devi_online(child, NDI_ONLINE_ATTACH);
1014 1014 ss->ss_flags &= ~SS_FLAG_TRIGGER_FP_ATTACH;
1015 1015 if (rval != NDI_SUCCESS) {
1016 1016 FCOEI_LOG(__FUNCTION__, "devi_online: %d", rval);
1017 1017 } else {
1018 1018 FCOEI_LOG(__FUNCTION__, "triggered successfully");
1019 1019 }
1020 1020 }
1021 1021
1022 1022 /*
1023 1023 * fcoei_abts_exchange
1024 1024 * Send ABTS to abort solicited exchange
1025 1025 *
1026 1026 * Input:
1027 1027 * xch = the exchange that will be aborted
1028 1028 *
1029 1029 * Return:
1030 1030 * N/A
1031 1031 *
1032 1032 * Comment:
1033 1033 * ABTS frame uses the same oxid as the exchange
1034 1034 */
1035 1035 static void
1036 1036 fcoei_abts_exchange(fcoei_exchange_t *xch)
1037 1037 {
1038 1038 fc_packet_t *fpkt = xch->xch_fpkt;
1039 1039 fcoe_frame_t *frm = NULL;
1040 1040
1041 1041 /*
1042 1042 * BLS_ABTS doesn't contain any other payload except FCFH
1043 1043 */
1044 1044 frm = xch->xch_ss->ss_eport->eport_alloc_frame(xch->xch_ss->ss_eport,
1045 1045 FCFH_SIZE, NULL);
1046 1046 if (frm == NULL) {
1047 1047 FCOEI_LOG(__FUNCTION__, "can't alloc frame: %p", xch);
1048 1048 return;
1049 1049 }
1050 1050
1051 1051 FFM_R_CTL(0x81, frm);
1052 1052 FFM_D_ID(fpkt->pkt_cmd_fhdr.d_id, frm);
1053 1053 FFM_S_ID(fpkt->pkt_cmd_fhdr.s_id, frm);
1054 1054 FFM_F_CTL(0x090000, frm);
1055 1055 FFM_SEQ_ID(0x01, frm);
1056 1056 FFM_OXID(xch->xch_oxid, frm);
1057 1057 FFM_RXID(xch->xch_rxid, frm);
1058 1058 fcoei_init_ifm(frm, xch);
1059 1059 xch->xch_ss->ss_eport->eport_tx_frame(frm);
1060 1060 }
1061 1061
1062 1062 /*
1063 1063 * fcoei_complete_xch
1064 1064 * Complete the exchange
1065 1065 *
1066 1066 * Input:
1067 1067 * xch = the exchange that will be completed
1068 1068 * frm = newly-allocated frame that has not been submitted
1069 1069 * pkt_state = LV fpkt state
1070 1070 * pkt_reason = LV fpkt reason
1071 1071 *
1072 1072 * Return:
1073 1073 * N/A
1074 1074 *
1075 1075 * Comment:
1076 1076 * N/A
1077 1077 */
1078 1078 void
1079 1079 fcoei_complete_xch(fcoei_exchange_t *xch, fcoe_frame_t *frm,
1080 1080 uint8_t pkt_state, uint8_t pkt_reason)
1081 1081 {
1082 1082 mod_hash_val_t val;
1083 1083
1084 1084 if (pkt_state != FC_PKT_SUCCESS) {
1085 1085 FCOEI_LOG(__FUNCTION__, "FHDR: %x/%x/%x, %x/%x/%x",
1086 1086 xch->xch_fpkt->pkt_cmd_fhdr.r_ctl,
1087 1087 xch->xch_fpkt->pkt_cmd_fhdr.f_ctl,
1088 1088 xch->xch_fpkt->pkt_cmd_fhdr.type,
1089 1089 xch->xch_fpkt->pkt_resp_fhdr.r_ctl,
1090 1090 xch->xch_fpkt->pkt_resp_fhdr.f_ctl,
1091 1091 xch->xch_fpkt->pkt_resp_fhdr.type);
1092 1092 FCOEI_LOG(__FUNCTION__, "%p/%p/%x/%x",
1093 1093 xch, frm, pkt_state, pkt_reason);
1094 1094 }
1095 1095
1096 1096 if (frm != NULL) {
1097 1097 /*
1098 1098 * It's newly-allocated frame , which we haven't sent out
1099 1099 */
1100 1100 xch->xch_ss->ss_eport->eport_free_netb(frm->frm_netb);
1101 1101 xch->xch_ss->ss_eport->eport_release_frame(frm);
1102 1102 FCOEI_LOG(__FUNCTION__, "xch: %p, not submitted", xch);
1103 1103 }
1104 1104
1105 1105 /*
1106 1106 * If xch is in hash table, we need remove it
1107 1107 */
1108 1108 if (xch->xch_flags & XCH_FLAG_IN_SOL_HASH) {
1109 1109 (void) mod_hash_remove(xch->xch_ss->ss_sol_oxid_hash,
1110 1110 FMHK(xch->xch_oxid), &val);
1111 1111 ASSERT((fcoei_exchange_t *)val == xch);
1112 1112 xch->xch_flags &= ~XCH_FLAG_IN_SOL_HASH;
1113 1113 } else if (xch->xch_flags & XCH_FLAG_IN_UNSOL_HASH) {
1114 1114 (void) mod_hash_remove(xch->xch_ss->ss_unsol_rxid_hash,
1115 1115 FMHK(xch->xch_rxid), &val);
1116 1116 ASSERT((fcoei_exchange_t *)val == xch);
1117 1117 xch->xch_flags &= ~XCH_FLAG_IN_UNSOL_HASH;
1118 1118 } else {
1119 1119 FCOEI_LOG(__FUNCTION__, "xch not in any hash: %p", xch);
1120 1120 }
1121 1121
1122 1122 xch->xch_fpkt->pkt_state = pkt_state;
1123 1123 xch->xch_fpkt->pkt_reason = pkt_reason;
1124 1124 if (xch->xch_fpkt->pkt_tran_flags & FC_TRAN_NO_INTR) {
1125 1125 FCOEI_LOG(__FUNCTION__, "polled xch is done: %p", xch);
1126 1126 sema_v(&xch->xch_sema);
1127 1127 } else {
1128 1128 xch->xch_fpkt->pkt_comp(xch->xch_fpkt);
1129 1129 }
1130 1130 }
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