1/*******************************************************************
  2 * This file is part of the Emulex Linux Device Driver for         *
  3 * Fibre Channel Host Bus Adapters.                                *
  4 * Copyright (C) 2017-2023 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
 53inline 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
 87int
 88lpfc_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
105static void
106lpfc_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
117static int
118lpfc_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 = (struct lpfc_dmabuf *)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
179static int
180lpfc_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
201static int
202lpfc_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 **/
238static void lpfc_discovery_wait(struct lpfc_vport *vport)
239{
240	struct lpfc_hba *phba = vport->phba;
241	uint32_t wait_flags = 0;
242	unsigned long wait_time_max;
243	unsigned long start_time;
244
245	wait_flags = FC_RSCN_MODE | FC_RSCN_DISCOVERY | FC_NLP_MORE |
246		     FC_RSCN_DEFERRED | FC_NDISC_ACTIVE | FC_DISC_TMO;
247
248	/*
249	 * The time constraint on this loop is a balance between the
250	 * fabric RA_TOV value and dev_loss tmo.  The driver's
251	 * devloss_tmo is 10 giving this loop a 3x multiplier minimally.
252	 */
253	wait_time_max = msecs_to_jiffies(((phba->fc_ratov * 3) + 3) * 1000);
254	wait_time_max += jiffies;
255	start_time = jiffies;
256	while (time_before(jiffies, wait_time_max)) {
257		if ((vport->num_disc_nodes > 0)    ||
258		    (vport->fc_flag & wait_flags)  ||
259		    ((vport->port_state > LPFC_VPORT_FAILED) &&
260		     (vport->port_state < LPFC_VPORT_READY))) {
261			lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT,
262					"1833 Vport discovery quiesce Wait:"
263					" state x%x fc_flags x%x"
264					" num_nodes x%x, waiting 1000 msecs"
265					" total wait msecs x%x\n",
266					vport->port_state, vport->fc_flag,
267					vport->num_disc_nodes,
268					jiffies_to_msecs(jiffies - start_time));
269			msleep(1000);
270		} else {
271			/* Base case.  Wait variants satisfied.  Break out */
272			lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT,
273					 "1834 Vport discovery quiesced:"
274					 " state x%x fc_flags x%x"
275					 " wait msecs x%x\n",
276					 vport->port_state, vport->fc_flag,
277					 jiffies_to_msecs(jiffies
278						- start_time));
279			break;
280		}
281	}
282
283	if (time_after(jiffies, wait_time_max))
284		lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
285				 "1835 Vport discovery quiesce failed:"
286				 " state x%x fc_flags x%x wait msecs x%x\n",
287				 vport->port_state, vport->fc_flag,
288				 jiffies_to_msecs(jiffies - start_time));
289}
290
291int
292lpfc_vport_create(struct fc_vport *fc_vport, bool disable)
293{
294	struct lpfc_nodelist *ndlp;
295	struct Scsi_Host *shost = fc_vport->shost;
296	struct lpfc_vport *pport = (struct lpfc_vport *) shost->hostdata;
297	struct lpfc_hba   *phba = pport->phba;
298	struct lpfc_vport *vport = NULL;
299	int instance;
300	int vpi;
301	int rc = VPORT_ERROR;
302	int status;
303
304	if ((phba->sli_rev < 3) || !(phba->cfg_enable_npiv)) {
305		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
306				"1808 Create VPORT failed: "
307				"NPIV is not enabled: SLImode:%d\n",
308				phba->sli_rev);
309		rc = VPORT_INVAL;
310		goto error_out;
311	}
312
313	/* NPIV is not supported if HBA has NVME Target enabled */
314	if (phba->nvmet_support) {
315		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
316				"3189 Create VPORT failed: "
317				"NPIV is not supported on NVME Target\n");
318		rc = VPORT_INVAL;
319		goto error_out;
320	}
321
322	vpi = lpfc_alloc_vpi(phba);
323	if (vpi == 0) {
324		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
325				"1809 Create VPORT failed: "
326				"Max VPORTs (%d) exceeded\n",
327				phba->max_vpi);
328		rc = VPORT_NORESOURCES;
329		goto error_out;
330	}
331
332	/* Assign an unused board number */
333	if ((instance = lpfc_get_instance()) < 0) {
334		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
335				"1810 Create VPORT failed: Cannot get "
336				"instance number\n");
337		lpfc_free_vpi(phba, vpi);
338		rc = VPORT_NORESOURCES;
339		goto error_out;
340	}
341
342	vport = lpfc_create_port(phba, instance, &fc_vport->dev);
343	if (!vport) {
344		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
345				"1811 Create VPORT failed: vpi x%x\n", vpi);
346		lpfc_free_vpi(phba, vpi);
347		rc = VPORT_NORESOURCES;
348		goto error_out;
349	}
350
351	vport->vpi = vpi;
352	lpfc_debugfs_initialize(vport);
353
354	if ((status = lpfc_vport_sparm(phba, vport))) {
355		if (status == -EINTR) {
356			lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
357					 "1831 Create VPORT Interrupted.\n");
358			rc = VPORT_ERROR;
359		} else {
360			lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
361					 "1813 Create VPORT failed. "
362					 "Cannot get sparam\n");
363			rc = VPORT_NORESOURCES;
364		}
365		lpfc_free_vpi(phba, vpi);
366		destroy_port(vport);
367		goto error_out;
368	}
369
370	u64_to_wwn(fc_vport->node_name, vport->fc_nodename.u.wwn);
371	u64_to_wwn(fc_vport->port_name, vport->fc_portname.u.wwn);
372
373	memcpy(&vport->fc_sparam.portName, vport->fc_portname.u.wwn, 8);
374	memcpy(&vport->fc_sparam.nodeName, vport->fc_nodename.u.wwn, 8);
375
376	if (!lpfc_valid_wwn_format(phba, &vport->fc_sparam.nodeName, "WWNN") ||
377	    !lpfc_valid_wwn_format(phba, &vport->fc_sparam.portName, "WWPN")) {
378		lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
379				 "1821 Create VPORT failed. "
380				 "Invalid WWN format\n");
381		lpfc_free_vpi(phba, vpi);
382		destroy_port(vport);
383		rc = VPORT_INVAL;
384		goto error_out;
385	}
386
387	if (!lpfc_unique_wwpn(phba, vport)) {
388		lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
389				 "1823 Create VPORT failed. "
390				 "Duplicate WWN on HBA\n");
391		lpfc_free_vpi(phba, vpi);
392		destroy_port(vport);
393		rc = VPORT_INVAL;
394		goto error_out;
395	}
396
397	/* Create binary sysfs attribute for vport */
398	lpfc_alloc_sysfs_attr(vport);
399
400	/* Set the DFT_LUN_Q_DEPTH accordingly */
401	vport->cfg_lun_queue_depth  = phba->pport->cfg_lun_queue_depth;
402
403	/* Only the physical port can support NVME for now */
404	vport->cfg_enable_fc4_type = LPFC_ENABLE_FCP;
405
406	*(struct lpfc_vport **)fc_vport->dd_data = vport;
407	vport->fc_vport = fc_vport;
408
409	/* At this point we are fully registered with SCSI Layer.  */
410	vport->load_flag |= FC_ALLOW_FDMI;
411	if (phba->cfg_enable_SmartSAN ||
412	    (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) {
413		/* Setup appropriate attribute masks */
414		vport->fdmi_hba_mask = phba->pport->fdmi_hba_mask;
415		vport->fdmi_port_mask = phba->pport->fdmi_port_mask;
416	}
417
418	/*
419	 * In SLI4, the vpi must be activated before it can be used
420	 * by the port.
421	 */
422	if ((phba->sli_rev == LPFC_SLI_REV4) &&
423	    (pport->fc_flag & FC_VFI_REGISTERED)) {
424		rc = lpfc_sli4_init_vpi(vport);
425		if (rc) {
426			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
427					"1838 Failed to INIT_VPI on vpi %d "
428					"status %d\n", vpi, rc);
429			rc = VPORT_NORESOURCES;
430			lpfc_free_vpi(phba, vpi);
431			goto error_out;
432		}
433	} else if (phba->sli_rev == LPFC_SLI_REV4) {
434		/*
435		 * Driver cannot INIT_VPI now. Set the flags to
436		 * init_vpi when reg_vfi complete.
437		 */
438		vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
439		lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
440		rc = VPORT_OK;
441		goto out;
442	}
443
444	if ((phba->link_state < LPFC_LINK_UP) ||
445	    (pport->port_state < LPFC_FABRIC_CFG_LINK) ||
446	    (phba->fc_topology == LPFC_TOPOLOGY_LOOP)) {
447		lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
448		rc = VPORT_OK;
449		goto out;
450	}
451
452	if (disable) {
453		lpfc_vport_set_state(vport, FC_VPORT_DISABLED);
454		rc = VPORT_OK;
455		goto out;
456	}
457
458	/* Use the Physical nodes Fabric NDLP to determine if the link is
459	 * up and ready to FDISC.
460	 */
461	ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
462	if (ndlp &&
463	    ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
464		if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
465			lpfc_set_disctmo(vport);
466			lpfc_initial_fdisc(vport);
467		} else {
468			lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
469			lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
470					 "0262 No NPIV Fabric support\n");
471		}
472	} else {
473		lpfc_vport_set_state(vport, FC_VPORT_FAILED);
474	}
475	rc = VPORT_OK;
476
477out:
478	lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
479			 "1825 Vport Created.\n");
480	lpfc_host_attrib_init(lpfc_shost_from_vport(vport));
481error_out:
482	return rc;
483}
484
485static int
486lpfc_send_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
487{
488	int rc;
489	struct lpfc_hba *phba = vport->phba;
490
491	DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq);
492
493	spin_lock_irq(&ndlp->lock);
494	if (!(ndlp->save_flags & NLP_WAIT_FOR_LOGO) &&
495	    !ndlp->logo_waitq) {
496		ndlp->logo_waitq = &waitq;
497		ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
498		ndlp->nlp_flag |= NLP_ISSUE_LOGO;
499		ndlp->save_flags |= NLP_WAIT_FOR_LOGO;
500	}
501	spin_unlock_irq(&ndlp->lock);
502	rc = lpfc_issue_els_npiv_logo(vport, ndlp);
503	if (!rc) {
504		wait_event_timeout(waitq,
505				   (!(ndlp->save_flags & NLP_WAIT_FOR_LOGO)),
506				   msecs_to_jiffies(phba->fc_ratov * 2000));
507
508		if (!(ndlp->save_flags & NLP_WAIT_FOR_LOGO))
509			goto logo_cmpl;
510		/* LOGO wait failed.  Correct status. */
511		rc = -EINTR;
512	} else {
513		rc = -EIO;
514	}
515
516	/* Error - clean up node flags. */
517	spin_lock_irq(&ndlp->lock);
518	ndlp->nlp_flag &= ~NLP_ISSUE_LOGO;
519	ndlp->save_flags &= ~NLP_WAIT_FOR_LOGO;
520	spin_unlock_irq(&ndlp->lock);
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
532static int
533disable_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	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
539
540	/* Can't disable during an outstanding delete. */
541	if (vport->load_flag & FC_UNLOADING)
542		return 0;
543
544	ndlp = lpfc_findnode_did(vport, Fabric_DID);
545	if (ndlp && phba->link_state >= LPFC_LINK_UP)
546		(void)lpfc_send_npiv_logo(vport, ndlp);
547
548	lpfc_sli_host_down(vport);
549	lpfc_cleanup_rpis(vport, 0);
 
 
 
 
 
 
 
 
 
 
550
551	lpfc_stop_vport_timers(vport);
552	lpfc_unreg_all_rpis(vport);
553	lpfc_unreg_default_rpis(vport);
554	/*
555	 * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi) does the
556	 * scsi_host_put() to release the vport.
557	 */
558	lpfc_mbx_unreg_vpi(vport);
559	if (phba->sli_rev == LPFC_SLI_REV4) {
560		spin_lock_irq(shost->host_lock);
561		vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
562		spin_unlock_irq(shost->host_lock);
563	}
564
565	lpfc_vport_set_state(vport, FC_VPORT_DISABLED);
566	lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
567			 "1826 Vport Disabled.\n");
568	return VPORT_OK;
569}
570
571static int
572enable_vport(struct fc_vport *fc_vport)
573{
574	struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
575	struct lpfc_hba   *phba = vport->phba;
576	struct lpfc_nodelist *ndlp = NULL;
577	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
578
579	if ((phba->link_state < LPFC_LINK_UP) ||
580	    (phba->fc_topology == LPFC_TOPOLOGY_LOOP)) {
581		lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
582		return VPORT_OK;
583	}
584
585	spin_lock_irq(shost->host_lock);
586	vport->load_flag |= FC_LOADING;
587	if (vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
588		spin_unlock_irq(shost->host_lock);
589		lpfc_issue_init_vpi(vport);
590		goto out;
591	}
592
593	vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
594	spin_unlock_irq(shost->host_lock);
595
596	/* Use the Physical nodes Fabric NDLP to determine if the link is
597	 * up and ready to FDISC.
598	 */
599	ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
600	if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
601		if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
602			lpfc_set_disctmo(vport);
603			lpfc_initial_fdisc(vport);
604		} else {
605			lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
606			lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
607					 "0264 No NPIV Fabric support\n");
608		}
609	} else {
610		lpfc_vport_set_state(vport, FC_VPORT_FAILED);
611	}
612
613out:
614	lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
615			 "1827 Vport Enabled.\n");
616	return VPORT_OK;
617}
618
619int
620lpfc_vport_disable(struct fc_vport *fc_vport, bool disable)
621{
622	if (disable)
623		return disable_vport(fc_vport);
624	else
625		return enable_vport(fc_vport);
626}
627
628int
629lpfc_vport_delete(struct fc_vport *fc_vport)
630{
631	struct lpfc_nodelist *ndlp = NULL;
632	struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
633	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
634	struct lpfc_hba  *phba = vport->phba;
635	int rc;
636
637	if (vport->port_type == LPFC_PHYSICAL_PORT) {
638		lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
639				 "1812 vport_delete failed: Cannot delete "
640				 "physical host\n");
641		return VPORT_ERROR;
642	}
643
644	/* If the vport is a static vport fail the deletion. */
645	if ((vport->vport_flag & STATIC_VPORT) &&
646		!(phba->pport->load_flag & FC_UNLOADING)) {
647		lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
648				 "1837 vport_delete failed: Cannot delete "
649				 "static vport.\n");
650		return VPORT_ERROR;
651	}
652
653	spin_lock_irq(&phba->hbalock);
654	vport->load_flag |= FC_UNLOADING;
655	spin_unlock_irq(&phba->hbalock);
656
657	/*
658	 * If we are not unloading the driver then prevent the vport_delete
659	 * from happening until after this vport's discovery is finished.
660	 */
661	if (!(phba->pport->load_flag & FC_UNLOADING)) {
662		int check_count = 0;
663		while (check_count < ((phba->fc_ratov * 3) + 3) &&
664		       vport->port_state > LPFC_VPORT_FAILED &&
665		       vport->port_state < LPFC_VPORT_READY) {
666			check_count++;
667			msleep(1000);
668		}
669		if (vport->port_state > LPFC_VPORT_FAILED &&
670		    vport->port_state < LPFC_VPORT_READY)
671			return -EAGAIN;
672	}
673
674	/*
675	 * Take early refcount for outstanding I/O requests we schedule during
676	 * delete processing for unreg_vpi.  Always keep this before
677	 * scsi_remove_host() as we can no longer obtain a reference through
678	 * scsi_host_get() after scsi_host_remove as shost is set to SHOST_DEL.
679	 */
680	if (!scsi_host_get(shost))
681		return VPORT_INVAL;
682
683	lpfc_free_sysfs_attr(vport);
684	lpfc_debugfs_terminate(vport);
685
686	/* Remove FC host to break driver binding. */
687	fc_remove_host(shost);
688	scsi_remove_host(shost);
689
690	/* Send the DA_ID and Fabric LOGO to cleanup Nameserver entries. */
691	ndlp = lpfc_findnode_did(vport, Fabric_DID);
692	if (!ndlp)
693		goto skip_logo;
694
695	if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE &&
696	    phba->link_state >= LPFC_LINK_UP &&
697	    phba->fc_topology != LPFC_TOPOLOGY_LOOP) {
698		if (vport->cfg_enable_da_id) {
699			/* Send DA_ID and wait for a completion. */
700			rc = lpfc_ns_cmd(vport, SLI_CTNS_DA_ID, 0, 0);
701			if (rc) {
702				lpfc_printf_log(vport->phba, KERN_WARNING,
703						LOG_VPORT,
704						"1829 CT command failed to "
705						"delete objects on fabric, "
706						"rc %d\n", rc);
707			}
708		}
709
710		/*
711		 * If the vpi is not registered, then a valid FDISC doesn't
712		 * exist and there is no need for a ELS LOGO.  Just cleanup
713		 * the ndlp.
714		 */
715		if (!(vport->vpi_state & LPFC_VPI_REGISTERED))
716			goto skip_logo;
717
718		/* Issue a Fabric LOGO to cleanup fabric resources. */
719		ndlp = lpfc_findnode_did(vport, Fabric_DID);
720		if (!ndlp)
721			goto skip_logo;
722
723		rc = lpfc_send_npiv_logo(vport, ndlp);
724		if (rc)
725			goto skip_logo;
726	}
727
728	if (!(phba->pport->load_flag & FC_UNLOADING))
729		lpfc_discovery_wait(vport);
730
731skip_logo:
732
733	lpfc_cleanup(vport);
734
735	/* Remove scsi host now.  The nodes are cleaned up. */
736	lpfc_sli_host_down(vport);
737	lpfc_stop_vport_timers(vport);
738
739	if (!(phba->pport->load_flag & FC_UNLOADING)) {
740		lpfc_unreg_all_rpis(vport);
741		lpfc_unreg_default_rpis(vport);
742		/*
743		 * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi)
744		 * does the scsi_host_put() to release the vport.
745		 */
746		if (!(vport->vpi_state & LPFC_VPI_REGISTERED) ||
747				lpfc_mbx_unreg_vpi(vport))
748			scsi_host_put(shost);
749	} else {
750		scsi_host_put(shost);
751	}
752
753	lpfc_free_vpi(phba, vport->vpi);
754	vport->work_port_events = 0;
755	spin_lock_irq(&phba->port_list_lock);
756	list_del_init(&vport->listentry);
757	spin_unlock_irq(&phba->port_list_lock);
758	lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
759			 "1828 Vport Deleted.\n");
760	scsi_host_put(shost);
761	return VPORT_OK;
762}
763
764struct lpfc_vport **
765lpfc_create_vport_work_array(struct lpfc_hba *phba)
766{
767	struct lpfc_vport *port_iterator;
768	struct lpfc_vport **vports;
769	int index = 0;
770	vports = kcalloc(phba->max_vports + 1, sizeof(struct lpfc_vport *),
771			 GFP_KERNEL);
772	if (vports == NULL)
773		return NULL;
774	spin_lock_irq(&phba->port_list_lock);
775	list_for_each_entry(port_iterator, &phba->port_list, listentry) {
776		if (port_iterator->load_flag & FC_UNLOADING)
777			continue;
778		if (!scsi_host_get(lpfc_shost_from_vport(port_iterator))) {
779			lpfc_printf_vlog(port_iterator, KERN_ERR,
780					 LOG_TRACE_EVENT,
781					 "1801 Create vport work array FAILED: "
782					 "cannot do scsi_host_get\n");
783			continue;
784		}
785		vports[index++] = port_iterator;
786	}
787	spin_unlock_irq(&phba->port_list_lock);
788	return vports;
789}
790
791void
792lpfc_destroy_vport_work_array(struct lpfc_hba *phba, struct lpfc_vport **vports)
793{
794	int i;
795	if (vports == NULL)
796		return;
797	for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
798		scsi_host_put(lpfc_shost_from_vport(vports[i]));
799	kfree(vports);
800}
801