1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017-2024 Broadcom. All Rights Reserved. The term *
5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. *
6 * Copyright (C) 2004-2016 Emulex. All rights reserved. *
7 * EMULEX and SLI are trademarks of Emulex. *
8 * www.broadcom.com *
9 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
10 * *
11 * This program is free software; you can redistribute it and/or *
12 * modify it under the terms of version 2 of the GNU General *
13 * Public License as published by the Free Software Foundation. *
14 * This program is distributed in the hope that it will be useful. *
15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
19 * TO BE LEGALLY INVALID. See the GNU General Public License for *
20 * more details, a copy of which can be found in the file COPYING *
21 * included with this package. *
22 *******************************************************************/
23
24 #include <linux/blkdev.h>
25 #include <linux/delay.h>
26 #include <linux/dma-mapping.h>
27 #include <linux/idr.h>
28 #include <linux/interrupt.h>
29 #include <linux/kthread.h>
30 #include <linux/pci.h>
31 #include <linux/slab.h>
32 #include <linux/spinlock.h>
33 #include <linux/sched/signal.h>
34
35 #include <scsi/scsi.h>
36 #include <scsi/scsi_device.h>
37 #include <scsi/scsi_host.h>
38 #include <scsi/scsi_transport_fc.h>
39
40 #include "lpfc_hw4.h"
41 #include "lpfc_hw.h"
42 #include "lpfc_sli.h"
43 #include "lpfc_sli4.h"
44 #include "lpfc_nl.h"
45 #include "lpfc_disc.h"
46 #include "lpfc_scsi.h"
47 #include "lpfc.h"
48 #include "lpfc_logmsg.h"
49 #include "lpfc_crtn.h"
50 #include "lpfc_version.h"
51 #include "lpfc_vport.h"
52
lpfc_vport_set_state(struct lpfc_vport * vport,enum fc_vport_state new_state)53 inline void lpfc_vport_set_state(struct lpfc_vport *vport,
54 enum fc_vport_state new_state)
55 {
56 struct fc_vport *fc_vport = vport->fc_vport;
57
58 if (fc_vport) {
59 /*
60 * When the transport defines fc_vport_set state we will replace
61 * this code with the following line
62 */
63 /* fc_vport_set_state(fc_vport, new_state); */
64 if (new_state != FC_VPORT_INITIALIZING)
65 fc_vport->vport_last_state = fc_vport->vport_state;
66 fc_vport->vport_state = new_state;
67 }
68
69 /* for all the error states we will set the invternal state to FAILED */
70 switch (new_state) {
71 case FC_VPORT_NO_FABRIC_SUPP:
72 case FC_VPORT_NO_FABRIC_RSCS:
73 case FC_VPORT_FABRIC_LOGOUT:
74 case FC_VPORT_FABRIC_REJ_WWN:
75 case FC_VPORT_FAILED:
76 vport->port_state = LPFC_VPORT_FAILED;
77 break;
78 case FC_VPORT_LINKDOWN:
79 vport->port_state = LPFC_VPORT_UNKNOWN;
80 break;
81 default:
82 /* do nothing */
83 break;
84 }
85 }
86
87 int
lpfc_alloc_vpi(struct lpfc_hba * phba)88 lpfc_alloc_vpi(struct lpfc_hba *phba)
89 {
90 unsigned long vpi;
91
92 spin_lock_irq(&phba->hbalock);
93 /* Start at bit 1 because vpi zero is reserved for the physical port */
94 vpi = find_next_zero_bit(phba->vpi_bmask, (phba->max_vpi + 1), 1);
95 if (vpi > phba->max_vpi)
96 vpi = 0;
97 else
98 set_bit(vpi, phba->vpi_bmask);
99 if (phba->sli_rev == LPFC_SLI_REV4)
100 phba->sli4_hba.max_cfg_param.vpi_used++;
101 spin_unlock_irq(&phba->hbalock);
102 return vpi;
103 }
104
105 static void
lpfc_free_vpi(struct lpfc_hba * phba,int vpi)106 lpfc_free_vpi(struct lpfc_hba *phba, int vpi)
107 {
108 if (vpi == 0)
109 return;
110 spin_lock_irq(&phba->hbalock);
111 clear_bit(vpi, phba->vpi_bmask);
112 if (phba->sli_rev == LPFC_SLI_REV4)
113 phba->sli4_hba.max_cfg_param.vpi_used--;
114 spin_unlock_irq(&phba->hbalock);
115 }
116
117 static int
lpfc_vport_sparm(struct lpfc_hba * phba,struct lpfc_vport * vport)118 lpfc_vport_sparm(struct lpfc_hba *phba, struct lpfc_vport *vport)
119 {
120 LPFC_MBOXQ_t *pmb;
121 MAILBOX_t *mb;
122 struct lpfc_dmabuf *mp;
123 int rc;
124
125 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
126 if (!pmb) {
127 return -ENOMEM;
128 }
129 mb = &pmb->u.mb;
130
131 rc = lpfc_read_sparam(phba, pmb, vport->vpi);
132 if (rc) {
133 mempool_free(pmb, phba->mbox_mem_pool);
134 return -ENOMEM;
135 }
136
137 /*
138 * Wait for the read_sparams mailbox to complete. Driver needs
139 * this per vport to start the FDISC. If the mailbox fails,
140 * just cleanup and return an error unless the failure is a
141 * mailbox timeout. For MBX_TIMEOUT, allow the default
142 * mbox completion handler to take care of the cleanup. This
143 * is safe as the mailbox command isn't one that triggers
144 * another mailbox.
145 */
146 pmb->vport = vport;
147 rc = lpfc_sli_issue_mbox_wait(phba, pmb, phba->fc_ratov * 2);
148 if (rc != MBX_SUCCESS) {
149 if (signal_pending(current)) {
150 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
151 "1830 Signal aborted mbxCmd x%x\n",
152 mb->mbxCommand);
153 if (rc != MBX_TIMEOUT)
154 lpfc_mbox_rsrc_cleanup(phba, pmb,
155 MBOX_THD_UNLOCKED);
156 return -EINTR;
157 } else {
158 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
159 "1818 VPort failed init, mbxCmd x%x "
160 "READ_SPARM mbxStatus x%x, rc = x%x\n",
161 mb->mbxCommand, mb->mbxStatus, rc);
162 if (rc != MBX_TIMEOUT)
163 lpfc_mbox_rsrc_cleanup(phba, pmb,
164 MBOX_THD_UNLOCKED);
165 return -EIO;
166 }
167 }
168
169 mp = pmb->ctx_buf;
170 memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
171 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
172 sizeof (struct lpfc_name));
173 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
174 sizeof (struct lpfc_name));
175 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
176 return 0;
177 }
178
179 static int
lpfc_valid_wwn_format(struct lpfc_hba * phba,struct lpfc_name * wwn,const char * name_type)180 lpfc_valid_wwn_format(struct lpfc_hba *phba, struct lpfc_name *wwn,
181 const char *name_type)
182 {
183 /* ensure that IEEE format 1 addresses
184 * contain zeros in bits 59-48
185 */
186 if (!((wwn->u.wwn[0] >> 4) == 1 &&
187 ((wwn->u.wwn[0] & 0xf) != 0 || (wwn->u.wwn[1] & 0xf) != 0)))
188 return 1;
189
190 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
191 "1822 Invalid %s: %02x:%02x:%02x:%02x:"
192 "%02x:%02x:%02x:%02x\n",
193 name_type,
194 wwn->u.wwn[0], wwn->u.wwn[1],
195 wwn->u.wwn[2], wwn->u.wwn[3],
196 wwn->u.wwn[4], wwn->u.wwn[5],
197 wwn->u.wwn[6], wwn->u.wwn[7]);
198 return 0;
199 }
200
201 static int
lpfc_unique_wwpn(struct lpfc_hba * phba,struct lpfc_vport * new_vport)202 lpfc_unique_wwpn(struct lpfc_hba *phba, struct lpfc_vport *new_vport)
203 {
204 struct lpfc_vport *vport;
205 unsigned long flags;
206
207 spin_lock_irqsave(&phba->port_list_lock, flags);
208 list_for_each_entry(vport, &phba->port_list, listentry) {
209 if (vport == new_vport)
210 continue;
211 /* If they match, return not unique */
212 if (memcmp(&vport->fc_sparam.portName,
213 &new_vport->fc_sparam.portName,
214 sizeof(struct lpfc_name)) == 0) {
215 spin_unlock_irqrestore(&phba->port_list_lock, flags);
216 return 0;
217 }
218 }
219 spin_unlock_irqrestore(&phba->port_list_lock, flags);
220 return 1;
221 }
222
223 /**
224 * lpfc_discovery_wait - Wait for driver discovery to quiesce
225 * @vport: The virtual port for which this call is being executed.
226 *
227 * This driver calls this routine specifically from lpfc_vport_delete
228 * to enforce a synchronous execution of vport
229 * delete relative to discovery activities. The
230 * lpfc_vport_delete routine should not return until it
231 * can reasonably guarantee that discovery has quiesced.
232 * Post FDISC LOGO, the driver must wait until its SAN teardown is
233 * complete and all resources recovered before allowing
234 * cleanup.
235 *
236 * This routine does not require any locks held.
237 **/
lpfc_discovery_wait(struct lpfc_vport * vport)238 static void lpfc_discovery_wait(struct lpfc_vport *vport)
239 {
240 struct lpfc_hba *phba = vport->phba;
241 unsigned long wait_time_max;
242 unsigned long start_time;
243
244 /*
245 * The time constraint on this loop is a balance between the
246 * fabric RA_TOV value and dev_loss tmo. The driver's
247 * devloss_tmo is 10 giving this loop a 3x multiplier minimally.
248 */
249 wait_time_max = secs_to_jiffies((phba->fc_ratov * 3) + 3);
250 wait_time_max += jiffies;
251 start_time = jiffies;
252 while (time_before(jiffies, wait_time_max)) {
253 if ((vport->num_disc_nodes > 0) ||
254 test_bit(FC_RSCN_MODE, &vport->fc_flag) ||
255 test_bit(FC_RSCN_DISCOVERY, &vport->fc_flag) ||
256 test_bit(FC_NLP_MORE, &vport->fc_flag) ||
257 test_bit(FC_RSCN_DEFERRED, &vport->fc_flag) ||
258 test_bit(FC_NDISC_ACTIVE, &vport->fc_flag) ||
259 test_bit(FC_DISC_TMO, &vport->fc_flag) ||
260 ((vport->port_state > LPFC_VPORT_FAILED) &&
261 (vport->port_state < LPFC_VPORT_READY))) {
262 lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT,
263 "1833 Vport discovery quiesce Wait: "
264 "state x%x fc_flags x%lx "
265 "num_nodes x%x, waiting 1000 msecs "
266 "total wait msecs x%x\n",
267 vport->port_state, vport->fc_flag,
268 vport->num_disc_nodes,
269 jiffies_to_msecs(jiffies - start_time));
270 msleep(1000);
271 } else {
272 /* Base case. Wait variants satisfied. Break out */
273 lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT,
274 "1834 Vport discovery quiesced: "
275 "state x%x fc_flags x%lx "
276 "wait msecs x%x\n",
277 vport->port_state, vport->fc_flag,
278 jiffies_to_msecs(jiffies
279 - start_time));
280 break;
281 }
282 }
283
284 if (time_after(jiffies, wait_time_max))
285 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
286 "1835 Vport discovery quiesce failed:"
287 " state x%x fc_flags x%lx wait msecs x%x\n",
288 vport->port_state, vport->fc_flag,
289 jiffies_to_msecs(jiffies - start_time));
290 }
291
292 int
lpfc_vport_create(struct fc_vport * fc_vport,bool disable)293 lpfc_vport_create(struct fc_vport *fc_vport, bool disable)
294 {
295 struct lpfc_nodelist *ndlp;
296 struct Scsi_Host *shost = fc_vport->shost;
297 struct lpfc_vport *pport = (struct lpfc_vport *) shost->hostdata;
298 struct lpfc_hba *phba = pport->phba;
299 struct lpfc_vport *vport = NULL;
300 int instance;
301 int vpi;
302 int rc = VPORT_ERROR;
303 int status;
304
305 if ((phba->sli_rev < 3) || !(phba->cfg_enable_npiv)) {
306 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
307 "1808 Create VPORT failed: "
308 "NPIV is not enabled: SLImode:%d\n",
309 phba->sli_rev);
310 rc = VPORT_INVAL;
311 goto error_out;
312 }
313
314 /* NPIV is not supported if HBA has NVME Target enabled */
315 if (phba->nvmet_support) {
316 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
317 "3189 Create VPORT failed: "
318 "NPIV is not supported on NVME Target\n");
319 rc = VPORT_INVAL;
320 goto error_out;
321 }
322
323 vpi = lpfc_alloc_vpi(phba);
324 if (vpi == 0) {
325 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
326 "1809 Create VPORT failed: "
327 "Max VPORTs (%d) exceeded\n",
328 phba->max_vpi);
329 rc = VPORT_NORESOURCES;
330 goto error_out;
331 }
332
333 /* Assign an unused board number */
334 if ((instance = lpfc_get_instance()) < 0) {
335 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
336 "1810 Create VPORT failed: Cannot get "
337 "instance number\n");
338 lpfc_free_vpi(phba, vpi);
339 rc = VPORT_NORESOURCES;
340 goto error_out;
341 }
342
343 vport = lpfc_create_port(phba, instance, &fc_vport->dev);
344 if (!vport) {
345 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
346 "1811 Create VPORT failed: vpi x%x\n", vpi);
347 lpfc_free_vpi(phba, vpi);
348 rc = VPORT_NORESOURCES;
349 goto error_out;
350 }
351
352 vport->vpi = vpi;
353 lpfc_debugfs_initialize(vport);
354
355 if ((status = lpfc_vport_sparm(phba, vport))) {
356 if (status == -EINTR) {
357 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
358 "1831 Create VPORT Interrupted.\n");
359 rc = VPORT_ERROR;
360 } else {
361 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
362 "1813 Create VPORT failed. "
363 "Cannot get sparam\n");
364 rc = VPORT_NORESOURCES;
365 }
366 lpfc_free_vpi(phba, vpi);
367 destroy_port(vport);
368 goto error_out;
369 }
370
371 u64_to_wwn(fc_vport->node_name, vport->fc_nodename.u.wwn);
372 u64_to_wwn(fc_vport->port_name, vport->fc_portname.u.wwn);
373
374 memcpy(&vport->fc_sparam.portName, vport->fc_portname.u.wwn, 8);
375 memcpy(&vport->fc_sparam.nodeName, vport->fc_nodename.u.wwn, 8);
376
377 if (!lpfc_valid_wwn_format(phba, &vport->fc_sparam.nodeName, "WWNN") ||
378 !lpfc_valid_wwn_format(phba, &vport->fc_sparam.portName, "WWPN")) {
379 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
380 "1821 Create VPORT failed. "
381 "Invalid WWN format\n");
382 lpfc_free_vpi(phba, vpi);
383 destroy_port(vport);
384 rc = VPORT_INVAL;
385 goto error_out;
386 }
387
388 if (!lpfc_unique_wwpn(phba, vport)) {
389 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
390 "1823 Create VPORT failed. "
391 "Duplicate WWN on HBA\n");
392 lpfc_free_vpi(phba, vpi);
393 destroy_port(vport);
394 rc = VPORT_INVAL;
395 goto error_out;
396 }
397
398 /* Create binary sysfs attribute for vport */
399 lpfc_alloc_sysfs_attr(vport);
400
401 /* Set the DFT_LUN_Q_DEPTH accordingly */
402 vport->cfg_lun_queue_depth = phba->pport->cfg_lun_queue_depth;
403
404 /* Only the physical port can support NVME for now */
405 vport->cfg_enable_fc4_type = LPFC_ENABLE_FCP;
406
407 *(struct lpfc_vport **)fc_vport->dd_data = vport;
408 vport->fc_vport = fc_vport;
409
410 /* At this point we are fully registered with SCSI Layer. */
411 set_bit(FC_ALLOW_FDMI, &vport->load_flag);
412 if (phba->cfg_enable_SmartSAN ||
413 (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) {
414 /* Setup appropriate attribute masks */
415 vport->fdmi_hba_mask = phba->pport->fdmi_hba_mask;
416 vport->fdmi_port_mask = phba->pport->fdmi_port_mask;
417 }
418
419 /*
420 * In SLI4, the vpi must be activated before it can be used
421 * by the port.
422 */
423 if ((phba->sli_rev == LPFC_SLI_REV4) &&
424 test_bit(FC_VFI_REGISTERED, &pport->fc_flag)) {
425 rc = lpfc_sli4_init_vpi(vport);
426 if (rc) {
427 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
428 "1838 Failed to INIT_VPI on vpi %d "
429 "status %d\n", vpi, rc);
430 rc = VPORT_NORESOURCES;
431 lpfc_free_vpi(phba, vpi);
432 goto error_out;
433 }
434 } else if (phba->sli_rev == LPFC_SLI_REV4) {
435 /*
436 * Driver cannot INIT_VPI now. Set the flags to
437 * init_vpi when reg_vfi complete.
438 */
439 set_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag);
440 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
441 rc = VPORT_OK;
442 goto out;
443 }
444
445 if ((phba->link_state < LPFC_LINK_UP) ||
446 (pport->port_state < LPFC_FABRIC_CFG_LINK) ||
447 (phba->fc_topology == LPFC_TOPOLOGY_LOOP)) {
448 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
449 rc = VPORT_OK;
450 goto out;
451 }
452
453 if (disable) {
454 lpfc_vport_set_state(vport, FC_VPORT_DISABLED);
455 rc = VPORT_OK;
456 goto out;
457 }
458
459 /* Use the Physical nodes Fabric NDLP to determine if the link is
460 * up and ready to FDISC.
461 */
462 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
463 if (ndlp &&
464 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
465 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
466 lpfc_set_disctmo(vport);
467 lpfc_initial_fdisc(vport);
468 } else {
469 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
470 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
471 "0262 No NPIV Fabric support\n");
472 }
473 } else {
474 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
475 }
476 rc = VPORT_OK;
477
478 out:
479 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
480 "1825 Vport Created.\n");
481 lpfc_host_attrib_init(lpfc_shost_from_vport(vport));
482 error_out:
483 return rc;
484 }
485
486 static int
lpfc_send_npiv_logo(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)487 lpfc_send_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
488 {
489 int rc;
490 struct lpfc_hba *phba = vport->phba;
491
492 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq);
493
494 spin_lock_irq(&ndlp->lock);
495 if (!test_bit(NLP_WAIT_FOR_LOGO, &ndlp->save_flags) &&
496 !ndlp->logo_waitq) {
497 ndlp->logo_waitq = &waitq;
498 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
499 set_bit(NLP_ISSUE_LOGO, &ndlp->nlp_flag);
500 set_bit(NLP_WAIT_FOR_LOGO, &ndlp->save_flags);
501 }
502 spin_unlock_irq(&ndlp->lock);
503 rc = lpfc_issue_els_npiv_logo(vport, ndlp);
504 if (!rc) {
505 wait_event_timeout(waitq,
506 !test_bit(NLP_WAIT_FOR_LOGO,
507 &ndlp->save_flags),
508 msecs_to_jiffies(phba->fc_ratov * 2000));
509
510 if (!test_bit(NLP_WAIT_FOR_LOGO, &ndlp->save_flags))
511 goto logo_cmpl;
512 /* LOGO wait failed. Correct status. */
513 rc = -EINTR;
514 } else {
515 rc = -EIO;
516 }
517
518 /* Error - clean up node flags. */
519 clear_bit(NLP_ISSUE_LOGO, &ndlp->nlp_flag);
520 clear_bit(NLP_WAIT_FOR_LOGO, &ndlp->save_flags);
521
522 logo_cmpl:
523 lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT,
524 "1824 Issue LOGO completes with status %d\n",
525 rc);
526 spin_lock_irq(&ndlp->lock);
527 ndlp->logo_waitq = NULL;
528 spin_unlock_irq(&ndlp->lock);
529 return rc;
530 }
531
532 static int
disable_vport(struct fc_vport * fc_vport)533 disable_vport(struct fc_vport *fc_vport)
534 {
535 struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
536 struct lpfc_hba *phba = vport->phba;
537 struct lpfc_nodelist *ndlp = NULL;
538
539 /* Can't disable during an outstanding delete. */
540 if (test_bit(FC_UNLOADING, &vport->load_flag))
541 return 0;
542
543 ndlp = lpfc_findnode_did(vport, Fabric_DID);
544 if (ndlp && phba->link_state >= LPFC_LINK_UP)
545 (void)lpfc_send_npiv_logo(vport, ndlp);
546
547 lpfc_sli_host_down(vport);
548 lpfc_cleanup_rpis(vport, 0);
549
550 lpfc_stop_vport_timers(vport);
551 lpfc_unreg_all_rpis(vport);
552 lpfc_unreg_default_rpis(vport);
553 /*
554 * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi) does the
555 * scsi_host_put() to release the vport.
556 */
557 lpfc_mbx_unreg_vpi(vport);
558 if (phba->sli_rev == LPFC_SLI_REV4)
559 set_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag);
560
561 lpfc_vport_set_state(vport, FC_VPORT_DISABLED);
562 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
563 "1826 Vport Disabled.\n");
564 return VPORT_OK;
565 }
566
567 static int
enable_vport(struct fc_vport * fc_vport)568 enable_vport(struct fc_vport *fc_vport)
569 {
570 struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
571 struct lpfc_hba *phba = vport->phba;
572 struct lpfc_nodelist *ndlp = NULL;
573
574 if ((phba->link_state < LPFC_LINK_UP) ||
575 (phba->fc_topology == LPFC_TOPOLOGY_LOOP)) {
576 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
577 return VPORT_OK;
578 }
579
580 set_bit(FC_LOADING, &vport->load_flag);
581 if (test_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag)) {
582 lpfc_issue_init_vpi(vport);
583 goto out;
584 }
585
586 set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
587
588 /* Use the Physical nodes Fabric NDLP to determine if the link is
589 * up and ready to FDISC.
590 */
591 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
592 if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
593 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
594 lpfc_set_disctmo(vport);
595 lpfc_initial_fdisc(vport);
596 } else {
597 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
598 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
599 "0264 No NPIV Fabric support\n");
600 }
601 } else {
602 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
603 }
604
605 out:
606 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
607 "1827 Vport Enabled.\n");
608 return VPORT_OK;
609 }
610
611 int
lpfc_vport_disable(struct fc_vport * fc_vport,bool disable)612 lpfc_vport_disable(struct fc_vport *fc_vport, bool disable)
613 {
614 if (disable)
615 return disable_vport(fc_vport);
616 else
617 return enable_vport(fc_vport);
618 }
619
620 int
lpfc_vport_delete(struct fc_vport * fc_vport)621 lpfc_vport_delete(struct fc_vport *fc_vport)
622 {
623 struct lpfc_nodelist *ndlp = NULL;
624 struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
625 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
626 struct lpfc_hba *phba = vport->phba;
627 int rc;
628 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq);
629
630 if (vport->port_type == LPFC_PHYSICAL_PORT) {
631 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
632 "1812 vport_delete failed: Cannot delete "
633 "physical host\n");
634 return VPORT_ERROR;
635 }
636
637 /* If the vport is a static vport fail the deletion. */
638 if ((vport->vport_flag & STATIC_VPORT) &&
639 !test_bit(FC_UNLOADING, &phba->pport->load_flag)) {
640 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
641 "1837 vport_delete failed: Cannot delete "
642 "static vport.\n");
643 return VPORT_ERROR;
644 }
645
646 set_bit(FC_UNLOADING, &vport->load_flag);
647
648 /*
649 * If we are not unloading the driver then prevent the vport_delete
650 * from happening until after this vport's discovery is finished.
651 */
652 if (!test_bit(FC_UNLOADING, &phba->pport->load_flag)) {
653 int check_count = 0;
654 while (check_count < ((phba->fc_ratov * 3) + 3) &&
655 vport->port_state > LPFC_VPORT_FAILED &&
656 vport->port_state < LPFC_VPORT_READY) {
657 check_count++;
658 msleep(1000);
659 }
660 if (vport->port_state > LPFC_VPORT_FAILED &&
661 vport->port_state < LPFC_VPORT_READY)
662 return -EAGAIN;
663 }
664
665 /*
666 * Take early refcount for outstanding I/O requests we schedule during
667 * delete processing for unreg_vpi. Always keep this before
668 * scsi_remove_host() as we can no longer obtain a reference through
669 * scsi_host_get() after scsi_host_remove as shost is set to SHOST_DEL.
670 */
671 if (!scsi_host_get(shost))
672 return VPORT_INVAL;
673
674 lpfc_free_sysfs_attr(vport);
675 lpfc_debugfs_terminate(vport);
676
677 /* Send the DA_ID and Fabric LOGO to cleanup Nameserver entries. */
678 ndlp = lpfc_findnode_did(vport, Fabric_DID);
679 if (!ndlp)
680 goto skip_logo;
681
682 /* Send the DA_ID and Fabric LOGO to cleanup the NPIV fabric entries. */
683 if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE &&
684 phba->link_state >= LPFC_LINK_UP &&
685 phba->fc_topology != LPFC_TOPOLOGY_LOOP) {
686 if (vport->cfg_enable_da_id) {
687 /* Send DA_ID and wait for a completion. This is best
688 * effort. If the DA_ID fails, likely the fabric will
689 * "leak" NportIDs but at least the driver issued the
690 * command.
691 */
692 ndlp = lpfc_findnode_did(vport, NameServer_DID);
693 if (!ndlp)
694 goto issue_logo;
695
696 spin_lock_irq(&ndlp->lock);
697 ndlp->da_id_waitq = &waitq;
698 spin_unlock_irq(&ndlp->lock);
699 set_bit(NLP_WAIT_FOR_DA_ID, &ndlp->save_flags);
700
701 rc = lpfc_ns_cmd(vport, SLI_CTNS_DA_ID, 0, 0);
702 if (!rc) {
703 wait_event_timeout(waitq,
704 !test_bit(NLP_WAIT_FOR_DA_ID,
705 &ndlp->save_flags),
706 msecs_to_jiffies(phba->fc_ratov * 2000));
707 }
708
709 lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT | LOG_ELS,
710 "1829 DA_ID issue status %d. "
711 "SFlag x%lx NState x%x, NFlag x%lx "
712 "Rpi x%x\n",
713 rc, ndlp->save_flags, ndlp->nlp_state,
714 ndlp->nlp_flag, ndlp->nlp_rpi);
715
716 /* Remove the waitq and save_flags. It no
717 * longer matters if the wake happened.
718 */
719 spin_lock_irq(&ndlp->lock);
720 ndlp->da_id_waitq = NULL;
721 spin_unlock_irq(&ndlp->lock);
722 clear_bit(NLP_WAIT_FOR_DA_ID, &ndlp->save_flags);
723 }
724
725 issue_logo:
726 /*
727 * If the vpi is not registered, then a valid FDISC doesn't
728 * exist and there is no need for a ELS LOGO. Just cleanup
729 * the ndlp.
730 */
731 if (!(vport->vpi_state & LPFC_VPI_REGISTERED))
732 goto skip_logo;
733
734 /* Issue a Fabric LOGO to cleanup fabric resources. */
735 ndlp = lpfc_findnode_did(vport, Fabric_DID);
736 if (!ndlp)
737 goto skip_logo;
738
739 rc = lpfc_send_npiv_logo(vport, ndlp);
740 if (rc)
741 goto skip_logo;
742 }
743
744 if (!test_bit(FC_UNLOADING, &phba->pport->load_flag))
745 lpfc_discovery_wait(vport);
746
747 skip_logo:
748
749 /* Remove FC host to break driver binding. */
750 fc_remove_host(shost);
751 scsi_remove_host(shost);
752
753 lpfc_cleanup(vport);
754
755 /* Remove scsi host now. The nodes are cleaned up. */
756 lpfc_sli_host_down(vport);
757 lpfc_stop_vport_timers(vport);
758
759 if (!test_bit(FC_UNLOADING, &phba->pport->load_flag)) {
760 lpfc_unreg_all_rpis(vport);
761 lpfc_unreg_default_rpis(vport);
762 /*
763 * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi)
764 * does the scsi_host_put() to release the vport.
765 */
766 if (!(vport->vpi_state & LPFC_VPI_REGISTERED) ||
767 lpfc_mbx_unreg_vpi(vport))
768 scsi_host_put(shost);
769 } else {
770 scsi_host_put(shost);
771 }
772
773 lpfc_free_vpi(phba, vport->vpi);
774 vport->work_port_events = 0;
775 spin_lock_irq(&phba->port_list_lock);
776 list_del_init(&vport->listentry);
777 spin_unlock_irq(&phba->port_list_lock);
778 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
779 "1828 Vport Deleted.\n");
780 scsi_host_put(shost);
781 return VPORT_OK;
782 }
783
784 struct lpfc_vport **
lpfc_create_vport_work_array(struct lpfc_hba * phba)785 lpfc_create_vport_work_array(struct lpfc_hba *phba)
786 {
787 struct lpfc_vport *port_iterator;
788 struct lpfc_vport **vports;
789 int index = 0;
790 vports = kcalloc(phba->max_vports + 1, sizeof(struct lpfc_vport *),
791 GFP_KERNEL);
792 if (vports == NULL)
793 return NULL;
794 spin_lock_irq(&phba->port_list_lock);
795 list_for_each_entry(port_iterator, &phba->port_list, listentry) {
796 if (test_bit(FC_UNLOADING, &port_iterator->load_flag))
797 continue;
798 if (!scsi_host_get(lpfc_shost_from_vport(port_iterator))) {
799 lpfc_printf_vlog(port_iterator, KERN_ERR,
800 LOG_TRACE_EVENT,
801 "1801 Create vport work array FAILED: "
802 "cannot do scsi_host_get\n");
803 continue;
804 }
805 vports[index++] = port_iterator;
806 }
807 spin_unlock_irq(&phba->port_list_lock);
808 return vports;
809 }
810
811 void
lpfc_destroy_vport_work_array(struct lpfc_hba * phba,struct lpfc_vport ** vports)812 lpfc_destroy_vport_work_array(struct lpfc_hba *phba, struct lpfc_vport **vports)
813 {
814 int i;
815 if (vports == NULL)
816 return;
817 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
818 scsi_host_put(lpfc_shost_from_vport(vports[i]));
819 kfree(vports);
820 }
821
822