1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017-2019 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 * Grab buffer pointer and clear context1 so we can use
139 * lpfc_sli_issue_box_wait
140 */
141 mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
142 pmb->ctx_buf = NULL;
143
144 pmb->vport = vport;
145 rc = lpfc_sli_issue_mbox_wait(phba, pmb, phba->fc_ratov * 2);
146 if (rc != MBX_SUCCESS) {
147 if (signal_pending(current)) {
148 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
149 "1830 Signal aborted mbxCmd x%x\n",
150 mb->mbxCommand);
151 lpfc_mbuf_free(phba, mp->virt, mp->phys);
152 kfree(mp);
153 if (rc != MBX_TIMEOUT)
154 mempool_free(pmb, phba->mbox_mem_pool);
155 return -EINTR;
156 } else {
157 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
158 "1818 VPort failed init, mbxCmd x%x "
159 "READ_SPARM mbxStatus x%x, rc = x%x\n",
160 mb->mbxCommand, mb->mbxStatus, rc);
161 lpfc_mbuf_free(phba, mp->virt, mp->phys);
162 kfree(mp);
163 if (rc != MBX_TIMEOUT)
164 mempool_free(pmb, phba->mbox_mem_pool);
165 return -EIO;
166 }
167 }
168
169 memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
170 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
171 sizeof (struct lpfc_name));
172 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
173 sizeof (struct lpfc_name));
174
175 lpfc_mbuf_free(phba, mp->virt, mp->phys);
176 kfree(mp);
177 mempool_free(pmb, phba->mbox_mem_pool);
178
179 return 0;
180 }
181
182 static int
lpfc_valid_wwn_format(struct lpfc_hba * phba,struct lpfc_name * wwn,const char * name_type)183 lpfc_valid_wwn_format(struct lpfc_hba *phba, struct lpfc_name *wwn,
184 const char *name_type)
185 {
186 /* ensure that IEEE format 1 addresses
187 * contain zeros in bits 59-48
188 */
189 if (!((wwn->u.wwn[0] >> 4) == 1 &&
190 ((wwn->u.wwn[0] & 0xf) != 0 || (wwn->u.wwn[1] & 0xf) != 0)))
191 return 1;
192
193 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
194 "1822 Invalid %s: %02x:%02x:%02x:%02x:"
195 "%02x:%02x:%02x:%02x\n",
196 name_type,
197 wwn->u.wwn[0], wwn->u.wwn[1],
198 wwn->u.wwn[2], wwn->u.wwn[3],
199 wwn->u.wwn[4], wwn->u.wwn[5],
200 wwn->u.wwn[6], wwn->u.wwn[7]);
201 return 0;
202 }
203
204 static int
lpfc_unique_wwpn(struct lpfc_hba * phba,struct lpfc_vport * new_vport)205 lpfc_unique_wwpn(struct lpfc_hba *phba, struct lpfc_vport *new_vport)
206 {
207 struct lpfc_vport *vport;
208 unsigned long flags;
209
210 spin_lock_irqsave(&phba->port_list_lock, flags);
211 list_for_each_entry(vport, &phba->port_list, listentry) {
212 if (vport == new_vport)
213 continue;
214 /* If they match, return not unique */
215 if (memcmp(&vport->fc_sparam.portName,
216 &new_vport->fc_sparam.portName,
217 sizeof(struct lpfc_name)) == 0) {
218 spin_unlock_irqrestore(&phba->port_list_lock, flags);
219 return 0;
220 }
221 }
222 spin_unlock_irqrestore(&phba->port_list_lock, flags);
223 return 1;
224 }
225
226 /**
227 * lpfc_discovery_wait - Wait for driver discovery to quiesce
228 * @vport: The virtual port for which this call is being executed.
229 *
230 * This driver calls this routine specifically from lpfc_vport_delete
231 * to enforce a synchronous execution of vport
232 * delete relative to discovery activities. The
233 * lpfc_vport_delete routine should not return until it
234 * can reasonably guarantee that discovery has quiesced.
235 * Post FDISC LOGO, the driver must wait until its SAN teardown is
236 * complete and all resources recovered before allowing
237 * cleanup.
238 *
239 * This routine does not require any locks held.
240 **/
lpfc_discovery_wait(struct lpfc_vport * vport)241 static void lpfc_discovery_wait(struct lpfc_vport *vport)
242 {
243 struct lpfc_hba *phba = vport->phba;
244 uint32_t wait_flags = 0;
245 unsigned long wait_time_max;
246 unsigned long start_time;
247
248 wait_flags = FC_RSCN_MODE | FC_RSCN_DISCOVERY | FC_NLP_MORE |
249 FC_RSCN_DEFERRED | FC_NDISC_ACTIVE | FC_DISC_TMO;
250
251 /*
252 * The time constraint on this loop is a balance between the
253 * fabric RA_TOV value and dev_loss tmo. The driver's
254 * devloss_tmo is 10 giving this loop a 3x multiplier minimally.
255 */
256 wait_time_max = msecs_to_jiffies(((phba->fc_ratov * 3) + 3) * 1000);
257 wait_time_max += jiffies;
258 start_time = jiffies;
259 while (time_before(jiffies, wait_time_max)) {
260 if ((vport->num_disc_nodes > 0) ||
261 (vport->fc_flag & wait_flags) ||
262 ((vport->port_state > LPFC_VPORT_FAILED) &&
263 (vport->port_state < LPFC_VPORT_READY))) {
264 lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT,
265 "1833 Vport discovery quiesce Wait:"
266 " state x%x fc_flags x%x"
267 " num_nodes x%x, waiting 1000 msecs"
268 " total wait msecs x%x\n",
269 vport->port_state, vport->fc_flag,
270 vport->num_disc_nodes,
271 jiffies_to_msecs(jiffies - start_time));
272 msleep(1000);
273 } else {
274 /* Base case. Wait variants satisfied. Break out */
275 lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT,
276 "1834 Vport discovery quiesced:"
277 " state x%x fc_flags x%x"
278 " wait msecs x%x\n",
279 vport->port_state, vport->fc_flag,
280 jiffies_to_msecs(jiffies
281 - start_time));
282 break;
283 }
284 }
285
286 if (time_after(jiffies, wait_time_max))
287 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
288 "1835 Vport discovery quiesce failed:"
289 " state x%x fc_flags x%x wait msecs x%x\n",
290 vport->port_state, vport->fc_flag,
291 jiffies_to_msecs(jiffies - start_time));
292 }
293
294 int
lpfc_vport_create(struct fc_vport * fc_vport,bool disable)295 lpfc_vport_create(struct fc_vport *fc_vport, bool disable)
296 {
297 struct lpfc_nodelist *ndlp;
298 struct Scsi_Host *shost = fc_vport->shost;
299 struct lpfc_vport *pport = (struct lpfc_vport *) shost->hostdata;
300 struct lpfc_hba *phba = pport->phba;
301 struct lpfc_vport *vport = NULL;
302 int instance;
303 int vpi;
304 int rc = VPORT_ERROR;
305 int status;
306
307 if ((phba->sli_rev < 3) || !(phba->cfg_enable_npiv)) {
308 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
309 "1808 Create VPORT failed: "
310 "NPIV is not enabled: SLImode:%d\n",
311 phba->sli_rev);
312 rc = VPORT_INVAL;
313 goto error_out;
314 }
315
316 /* NPIV is not supported if HBA has NVME Target enabled */
317 if (phba->nvmet_support) {
318 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
319 "3189 Create VPORT failed: "
320 "NPIV is not supported on NVME Target\n");
321 rc = VPORT_INVAL;
322 goto error_out;
323 }
324
325 vpi = lpfc_alloc_vpi(phba);
326 if (vpi == 0) {
327 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
328 "1809 Create VPORT failed: "
329 "Max VPORTs (%d) exceeded\n",
330 phba->max_vpi);
331 rc = VPORT_NORESOURCES;
332 goto error_out;
333 }
334
335 /* Assign an unused board number */
336 if ((instance = lpfc_get_instance()) < 0) {
337 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
338 "1810 Create VPORT failed: Cannot get "
339 "instance number\n");
340 lpfc_free_vpi(phba, vpi);
341 rc = VPORT_NORESOURCES;
342 goto error_out;
343 }
344
345 vport = lpfc_create_port(phba, instance, &fc_vport->dev);
346 if (!vport) {
347 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
348 "1811 Create VPORT failed: vpi x%x\n", vpi);
349 lpfc_free_vpi(phba, vpi);
350 rc = VPORT_NORESOURCES;
351 goto error_out;
352 }
353
354 vport->vpi = vpi;
355 lpfc_debugfs_initialize(vport);
356
357 if ((status = lpfc_vport_sparm(phba, vport))) {
358 if (status == -EINTR) {
359 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
360 "1831 Create VPORT Interrupted.\n");
361 rc = VPORT_ERROR;
362 } else {
363 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
364 "1813 Create VPORT failed. "
365 "Cannot get sparam\n");
366 rc = VPORT_NORESOURCES;
367 }
368 lpfc_free_vpi(phba, vpi);
369 destroy_port(vport);
370 goto error_out;
371 }
372
373 u64_to_wwn(fc_vport->node_name, vport->fc_nodename.u.wwn);
374 u64_to_wwn(fc_vport->port_name, vport->fc_portname.u.wwn);
375
376 memcpy(&vport->fc_sparam.portName, vport->fc_portname.u.wwn, 8);
377 memcpy(&vport->fc_sparam.nodeName, vport->fc_nodename.u.wwn, 8);
378
379 if (!lpfc_valid_wwn_format(phba, &vport->fc_sparam.nodeName, "WWNN") ||
380 !lpfc_valid_wwn_format(phba, &vport->fc_sparam.portName, "WWPN")) {
381 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
382 "1821 Create VPORT failed. "
383 "Invalid WWN format\n");
384 lpfc_free_vpi(phba, vpi);
385 destroy_port(vport);
386 rc = VPORT_INVAL;
387 goto error_out;
388 }
389
390 if (!lpfc_unique_wwpn(phba, vport)) {
391 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
392 "1823 Create VPORT failed. "
393 "Duplicate WWN on HBA\n");
394 lpfc_free_vpi(phba, vpi);
395 destroy_port(vport);
396 rc = VPORT_INVAL;
397 goto error_out;
398 }
399
400 /* Create binary sysfs attribute for vport */
401 lpfc_alloc_sysfs_attr(vport);
402
403 /* Set the DFT_LUN_Q_DEPTH accordingly */
404 vport->cfg_lun_queue_depth = phba->pport->cfg_lun_queue_depth;
405
406 /* Only the physical port can support NVME for now */
407 vport->cfg_enable_fc4_type = LPFC_ENABLE_FCP;
408
409 *(struct lpfc_vport **)fc_vport->dd_data = vport;
410 vport->fc_vport = fc_vport;
411
412 /* At this point we are fully registered with SCSI Layer. */
413 vport->load_flag |= FC_ALLOW_FDMI;
414 if (phba->cfg_enable_SmartSAN ||
415 (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) {
416 /* Setup appropriate attribute masks */
417 vport->fdmi_hba_mask = phba->pport->fdmi_hba_mask;
418 vport->fdmi_port_mask = phba->pport->fdmi_port_mask;
419 }
420
421 /*
422 * In SLI4, the vpi must be activated before it can be used
423 * by the port.
424 */
425 if ((phba->sli_rev == LPFC_SLI_REV4) &&
426 (pport->fc_flag & FC_VFI_REGISTERED)) {
427 rc = lpfc_sli4_init_vpi(vport);
428 if (rc) {
429 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
430 "1838 Failed to INIT_VPI on vpi %d "
431 "status %d\n", vpi, rc);
432 rc = VPORT_NORESOURCES;
433 lpfc_free_vpi(phba, vpi);
434 goto error_out;
435 }
436 } else if (phba->sli_rev == LPFC_SLI_REV4) {
437 /*
438 * Driver cannot INIT_VPI now. Set the flags to
439 * init_vpi when reg_vfi complete.
440 */
441 vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
442 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
443 rc = VPORT_OK;
444 goto out;
445 }
446
447 if ((phba->link_state < LPFC_LINK_UP) ||
448 (pport->port_state < LPFC_FABRIC_CFG_LINK) ||
449 (phba->fc_topology == LPFC_TOPOLOGY_LOOP)) {
450 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
451 rc = VPORT_OK;
452 goto out;
453 }
454
455 if (disable) {
456 lpfc_vport_set_state(vport, FC_VPORT_DISABLED);
457 rc = VPORT_OK;
458 goto out;
459 }
460
461 /* Use the Physical nodes Fabric NDLP to determine if the link is
462 * up and ready to FDISC.
463 */
464 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
465 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
466 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
467 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
468 lpfc_set_disctmo(vport);
469 lpfc_initial_fdisc(vport);
470 } else {
471 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
472 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
473 "0262 No NPIV Fabric support\n");
474 }
475 } else {
476 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
477 }
478 rc = VPORT_OK;
479
480 out:
481 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
482 "1825 Vport Created.\n");
483 lpfc_host_attrib_init(lpfc_shost_from_vport(vport));
484 error_out:
485 return rc;
486 }
487
488 static int
disable_vport(struct fc_vport * fc_vport)489 disable_vport(struct fc_vport *fc_vport)
490 {
491 struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
492 struct lpfc_hba *phba = vport->phba;
493 struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
494 long timeout;
495 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
496
497 ndlp = lpfc_findnode_did(vport, Fabric_DID);
498 if (ndlp && NLP_CHK_NODE_ACT(ndlp)
499 && phba->link_state >= LPFC_LINK_UP) {
500 vport->unreg_vpi_cmpl = VPORT_INVAL;
501 timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
502 if (!lpfc_issue_els_npiv_logo(vport, ndlp))
503 while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout)
504 timeout = schedule_timeout(timeout);
505 }
506
507 lpfc_sli_host_down(vport);
508
509 /* Mark all nodes for discovery so we can remove them by
510 * calling lpfc_cleanup_rpis(vport, 1)
511 */
512 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
513 if (!NLP_CHK_NODE_ACT(ndlp))
514 continue;
515 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
516 continue;
517 lpfc_disc_state_machine(vport, ndlp, NULL,
518 NLP_EVT_DEVICE_RECOVERY);
519 }
520 lpfc_cleanup_rpis(vport, 1);
521
522 lpfc_stop_vport_timers(vport);
523 lpfc_unreg_all_rpis(vport);
524 lpfc_unreg_default_rpis(vport);
525 /*
526 * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi) does the
527 * scsi_host_put() to release the vport.
528 */
529 lpfc_mbx_unreg_vpi(vport);
530 if (phba->sli_rev == LPFC_SLI_REV4) {
531 spin_lock_irq(shost->host_lock);
532 vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
533 spin_unlock_irq(shost->host_lock);
534 }
535
536 lpfc_vport_set_state(vport, FC_VPORT_DISABLED);
537 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
538 "1826 Vport Disabled.\n");
539 return VPORT_OK;
540 }
541
542 static int
enable_vport(struct fc_vport * fc_vport)543 enable_vport(struct fc_vport *fc_vport)
544 {
545 struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
546 struct lpfc_hba *phba = vport->phba;
547 struct lpfc_nodelist *ndlp = NULL;
548 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
549
550 if ((phba->link_state < LPFC_LINK_UP) ||
551 (phba->fc_topology == LPFC_TOPOLOGY_LOOP)) {
552 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
553 return VPORT_OK;
554 }
555
556 spin_lock_irq(shost->host_lock);
557 vport->load_flag |= FC_LOADING;
558 if (vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
559 spin_unlock_irq(shost->host_lock);
560 lpfc_issue_init_vpi(vport);
561 goto out;
562 }
563
564 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
565 spin_unlock_irq(shost->host_lock);
566
567 /* Use the Physical nodes Fabric NDLP to determine if the link is
568 * up and ready to FDISC.
569 */
570 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
571 if (ndlp && NLP_CHK_NODE_ACT(ndlp)
572 && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
573 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
574 lpfc_set_disctmo(vport);
575 lpfc_initial_fdisc(vport);
576 } else {
577 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
578 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
579 "0264 No NPIV Fabric support\n");
580 }
581 } else {
582 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
583 }
584
585 out:
586 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
587 "1827 Vport Enabled.\n");
588 return VPORT_OK;
589 }
590
591 int
lpfc_vport_disable(struct fc_vport * fc_vport,bool disable)592 lpfc_vport_disable(struct fc_vport *fc_vport, bool disable)
593 {
594 if (disable)
595 return disable_vport(fc_vport);
596 else
597 return enable_vport(fc_vport);
598 }
599
600
601 int
lpfc_vport_delete(struct fc_vport * fc_vport)602 lpfc_vport_delete(struct fc_vport *fc_vport)
603 {
604 struct lpfc_nodelist *ndlp = NULL;
605 struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
606 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
607 struct lpfc_hba *phba = vport->phba;
608 long timeout;
609 bool ns_ndlp_referenced = false;
610
611 if (vport->port_type == LPFC_PHYSICAL_PORT) {
612 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
613 "1812 vport_delete failed: Cannot delete "
614 "physical host\n");
615 return VPORT_ERROR;
616 }
617
618 /* If the vport is a static vport fail the deletion. */
619 if ((vport->vport_flag & STATIC_VPORT) &&
620 !(phba->pport->load_flag & FC_UNLOADING)) {
621 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
622 "1837 vport_delete failed: Cannot delete "
623 "static vport.\n");
624 return VPORT_ERROR;
625 }
626 spin_lock_irq(&phba->hbalock);
627 vport->load_flag |= FC_UNLOADING;
628 spin_unlock_irq(&phba->hbalock);
629 /*
630 * If we are not unloading the driver then prevent the vport_delete
631 * from happening until after this vport's discovery is finished.
632 */
633 if (!(phba->pport->load_flag & FC_UNLOADING)) {
634 int check_count = 0;
635 while (check_count < ((phba->fc_ratov * 3) + 3) &&
636 vport->port_state > LPFC_VPORT_FAILED &&
637 vport->port_state < LPFC_VPORT_READY) {
638 check_count++;
639 msleep(1000);
640 }
641 if (vport->port_state > LPFC_VPORT_FAILED &&
642 vport->port_state < LPFC_VPORT_READY)
643 return -EAGAIN;
644 }
645
646 /*
647 * Take early refcount for outstanding I/O requests we schedule during
648 * delete processing for unreg_vpi. Always keep this before
649 * scsi_remove_host() as we can no longer obtain a reference through
650 * scsi_host_get() after scsi_host_remove as shost is set to SHOST_DEL.
651 */
652 if (!scsi_host_get(shost))
653 return VPORT_INVAL;
654
655 lpfc_free_sysfs_attr(vport);
656
657 lpfc_debugfs_terminate(vport);
658
659 /*
660 * The call to fc_remove_host might release the NameServer ndlp. Since
661 * we might need to use the ndlp to send the DA_ID CT command,
662 * increment the reference for the NameServer ndlp to prevent it from
663 * being released.
664 */
665 ndlp = lpfc_findnode_did(vport, NameServer_DID);
666 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
667 lpfc_nlp_get(ndlp);
668 ns_ndlp_referenced = true;
669 }
670
671 /* Remove FC host and then SCSI host with the vport */
672 fc_remove_host(shost);
673 scsi_remove_host(shost);
674
675 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
676
677 /* In case of driver unload, we shall not perform fabric logo as the
678 * worker thread already stopped at this stage and, in this case, we
679 * can safely skip the fabric logo.
680 */
681 if (phba->pport->load_flag & FC_UNLOADING) {
682 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
683 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE &&
684 phba->link_state >= LPFC_LINK_UP) {
685 /* First look for the Fabric ndlp */
686 ndlp = lpfc_findnode_did(vport, Fabric_DID);
687 if (!ndlp)
688 goto skip_logo;
689 else if (!NLP_CHK_NODE_ACT(ndlp)) {
690 ndlp = lpfc_enable_node(vport, ndlp,
691 NLP_STE_UNUSED_NODE);
692 if (!ndlp)
693 goto skip_logo;
694 }
695 /* Remove ndlp from vport npld list */
696 lpfc_dequeue_node(vport, ndlp);
697
698 /* Indicate free memory when release */
699 spin_lock_irq(&phba->ndlp_lock);
700 NLP_SET_FREE_REQ(ndlp);
701 spin_unlock_irq(&phba->ndlp_lock);
702 /* Kick off release ndlp when it can be safely done */
703 lpfc_nlp_put(ndlp);
704 }
705 goto skip_logo;
706 }
707
708 /* Otherwise, we will perform fabric logo as needed */
709 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
710 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE &&
711 phba->link_state >= LPFC_LINK_UP &&
712 phba->fc_topology != LPFC_TOPOLOGY_LOOP) {
713 if (vport->cfg_enable_da_id) {
714 timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
715 if (!lpfc_ns_cmd(vport, SLI_CTNS_DA_ID, 0, 0))
716 while (vport->ct_flags && timeout)
717 timeout = schedule_timeout(timeout);
718 else
719 lpfc_printf_log(vport->phba, KERN_WARNING,
720 LOG_VPORT,
721 "1829 CT command failed to "
722 "delete objects on fabric\n");
723 }
724 /* First look for the Fabric ndlp */
725 ndlp = lpfc_findnode_did(vport, Fabric_DID);
726 if (!ndlp) {
727 /* Cannot find existing Fabric ndlp, allocate one */
728 ndlp = lpfc_nlp_init(vport, Fabric_DID);
729 if (!ndlp)
730 goto skip_logo;
731 /* Indicate free memory when release */
732 NLP_SET_FREE_REQ(ndlp);
733 } else {
734 if (!NLP_CHK_NODE_ACT(ndlp)) {
735 ndlp = lpfc_enable_node(vport, ndlp,
736 NLP_STE_UNUSED_NODE);
737 if (!ndlp)
738 goto skip_logo;
739 }
740
741 /* Remove ndlp from vport list */
742 lpfc_dequeue_node(vport, ndlp);
743 spin_lock_irq(&phba->ndlp_lock);
744 if (!NLP_CHK_FREE_REQ(ndlp))
745 /* Indicate free memory when release */
746 NLP_SET_FREE_REQ(ndlp);
747 else {
748 /* Skip this if ndlp is already in free mode */
749 spin_unlock_irq(&phba->ndlp_lock);
750 goto skip_logo;
751 }
752 spin_unlock_irq(&phba->ndlp_lock);
753 }
754
755 /*
756 * If the vpi is not registered, then a valid FDISC doesn't
757 * exist and there is no need for a ELS LOGO. Just cleanup
758 * the ndlp.
759 */
760 if (!(vport->vpi_state & LPFC_VPI_REGISTERED)) {
761 lpfc_nlp_put(ndlp);
762 goto skip_logo;
763 }
764
765 vport->unreg_vpi_cmpl = VPORT_INVAL;
766 timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
767 if (!lpfc_issue_els_npiv_logo(vport, ndlp))
768 while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout)
769 timeout = schedule_timeout(timeout);
770 }
771
772 if (!(phba->pport->load_flag & FC_UNLOADING))
773 lpfc_discovery_wait(vport);
774
775 skip_logo:
776
777 /*
778 * If the NameServer ndlp has been incremented to allow the DA_ID CT
779 * command to be sent, decrement the ndlp now.
780 */
781 if (ns_ndlp_referenced) {
782 ndlp = lpfc_findnode_did(vport, NameServer_DID);
783 lpfc_nlp_put(ndlp);
784 }
785
786 lpfc_cleanup(vport);
787 lpfc_sli_host_down(vport);
788
789 lpfc_stop_vport_timers(vport);
790
791 if (!(phba->pport->load_flag & FC_UNLOADING)) {
792 lpfc_unreg_all_rpis(vport);
793 lpfc_unreg_default_rpis(vport);
794 /*
795 * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi)
796 * does the scsi_host_put() to release the vport.
797 */
798 if (!(vport->vpi_state & LPFC_VPI_REGISTERED) ||
799 lpfc_mbx_unreg_vpi(vport))
800 scsi_host_put(shost);
801 } else {
802 scsi_host_put(shost);
803 }
804
805 lpfc_free_vpi(phba, vport->vpi);
806 vport->work_port_events = 0;
807 spin_lock_irq(&phba->port_list_lock);
808 list_del_init(&vport->listentry);
809 spin_unlock_irq(&phba->port_list_lock);
810 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
811 "1828 Vport Deleted.\n");
812 scsi_host_put(shost);
813 return VPORT_OK;
814 }
815
816 struct lpfc_vport **
lpfc_create_vport_work_array(struct lpfc_hba * phba)817 lpfc_create_vport_work_array(struct lpfc_hba *phba)
818 {
819 struct lpfc_vport *port_iterator;
820 struct lpfc_vport **vports;
821 int index = 0;
822 vports = kcalloc(phba->max_vports + 1, sizeof(struct lpfc_vport *),
823 GFP_KERNEL);
824 if (vports == NULL)
825 return NULL;
826 spin_lock_irq(&phba->port_list_lock);
827 list_for_each_entry(port_iterator, &phba->port_list, listentry) {
828 if (port_iterator->load_flag & FC_UNLOADING)
829 continue;
830 if (!scsi_host_get(lpfc_shost_from_vport(port_iterator))) {
831 lpfc_printf_vlog(port_iterator, KERN_ERR,
832 LOG_TRACE_EVENT,
833 "1801 Create vport work array FAILED: "
834 "cannot do scsi_host_get\n");
835 continue;
836 }
837 vports[index++] = port_iterator;
838 }
839 spin_unlock_irq(&phba->port_list_lock);
840 return vports;
841 }
842
843 void
lpfc_destroy_vport_work_array(struct lpfc_hba * phba,struct lpfc_vport ** vports)844 lpfc_destroy_vport_work_array(struct lpfc_hba *phba, struct lpfc_vport **vports)
845 {
846 int i;
847 if (vports == NULL)
848 return;
849 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
850 scsi_host_put(lpfc_shost_from_vport(vports[i]));
851 kfree(vports);
852 }
853
854
855 /**
856 * lpfc_vport_reset_stat_data - Reset the statistical data for the vport
857 * @vport: Pointer to vport object.
858 *
859 * This function resets the statistical data for the vport. This function
860 * is called with the host_lock held
861 **/
862 void
lpfc_vport_reset_stat_data(struct lpfc_vport * vport)863 lpfc_vport_reset_stat_data(struct lpfc_vport *vport)
864 {
865 struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
866
867 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
868 if (!NLP_CHK_NODE_ACT(ndlp))
869 continue;
870 if (ndlp->lat_data)
871 memset(ndlp->lat_data, 0, LPFC_MAX_BUCKET_COUNT *
872 sizeof(struct lpfc_scsicmd_bkt));
873 }
874 }
875
876
877 /**
878 * lpfc_alloc_bucket - Allocate data buffer required for statistical data
879 * @vport: Pointer to vport object.
880 *
881 * This function allocates data buffer required for all the FC
882 * nodes of the vport to collect statistical data.
883 **/
884 void
lpfc_alloc_bucket(struct lpfc_vport * vport)885 lpfc_alloc_bucket(struct lpfc_vport *vport)
886 {
887 struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
888
889 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
890 if (!NLP_CHK_NODE_ACT(ndlp))
891 continue;
892
893 kfree(ndlp->lat_data);
894 ndlp->lat_data = NULL;
895
896 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
897 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
898 sizeof(struct lpfc_scsicmd_bkt),
899 GFP_ATOMIC);
900
901 if (!ndlp->lat_data)
902 lpfc_printf_vlog(vport, KERN_ERR,
903 LOG_TRACE_EVENT,
904 "0287 lpfc_alloc_bucket failed to "
905 "allocate statistical data buffer DID "
906 "0x%x\n", ndlp->nlp_DID);
907 }
908 }
909 }
910
911 /**
912 * lpfc_free_bucket - Free data buffer required for statistical data
913 * @vport: Pointer to vport object.
914 *
915 * Th function frees statistical data buffer of all the FC
916 * nodes of the vport.
917 **/
918 void
lpfc_free_bucket(struct lpfc_vport * vport)919 lpfc_free_bucket(struct lpfc_vport *vport)
920 {
921 struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
922
923 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
924 if (!NLP_CHK_NODE_ACT(ndlp))
925 continue;
926
927 kfree(ndlp->lat_data);
928 ndlp->lat_data = NULL;
929 }
930 }
931
