Merge branch 'for-2.6.27' of git://linux-nfs.org/~bfields/linux
[linux-2.6] / drivers / scsi / lpfc / lpfc_vport.c
1 /*******************************************************************
2  * This file is part of the Emulex Linux Device Driver for         *
3  * Fibre Channel Host Bus Adapters.                                *
4  * Copyright (C) 2004-2008 Emulex.  All rights reserved.           *
5  * EMULEX and SLI are trademarks of Emulex.                        *
6  * www.emulex.com                                                  *
7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
8  *                                                                 *
9  * This program is free software; you can redistribute it and/or   *
10  * modify it under the terms of version 2 of the GNU General       *
11  * Public License as published by the Free Software Foundation.    *
12  * This program is distributed in the hope that it will be useful. *
13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
18  * more details, a copy of which can be found in the file COPYING  *
19  * included with this package.                                     *
20  *******************************************************************/
21
22 #include <linux/blkdev.h>
23 #include <linux/delay.h>
24 #include <linux/dma-mapping.h>
25 #include <linux/idr.h>
26 #include <linux/interrupt.h>
27 #include <linux/kthread.h>
28 #include <linux/pci.h>
29 #include <linux/spinlock.h>
30
31 #include <scsi/scsi.h>
32 #include <scsi/scsi_device.h>
33 #include <scsi/scsi_host.h>
34 #include <scsi/scsi_transport_fc.h>
35 #include "lpfc_hw.h"
36 #include "lpfc_sli.h"
37 #include "lpfc_disc.h"
38 #include "lpfc_scsi.h"
39 #include "lpfc.h"
40 #include "lpfc_logmsg.h"
41 #include "lpfc_crtn.h"
42 #include "lpfc_version.h"
43 #include "lpfc_vport.h"
44
45 inline void lpfc_vport_set_state(struct lpfc_vport *vport,
46                                  enum fc_vport_state new_state)
47 {
48         struct fc_vport *fc_vport = vport->fc_vport;
49
50         if (fc_vport) {
51                 /*
52                  * When the transport defines fc_vport_set state we will replace
53                  * this code with the following line
54                  */
55                 /* fc_vport_set_state(fc_vport, new_state); */
56                 if (new_state != FC_VPORT_INITIALIZING)
57                         fc_vport->vport_last_state = fc_vport->vport_state;
58                 fc_vport->vport_state = new_state;
59         }
60
61         /* for all the error states we will set the invternal state to FAILED */
62         switch (new_state) {
63         case FC_VPORT_NO_FABRIC_SUPP:
64         case FC_VPORT_NO_FABRIC_RSCS:
65         case FC_VPORT_FABRIC_LOGOUT:
66         case FC_VPORT_FABRIC_REJ_WWN:
67         case FC_VPORT_FAILED:
68                 vport->port_state = LPFC_VPORT_FAILED;
69                 break;
70         case FC_VPORT_LINKDOWN:
71                 vport->port_state = LPFC_VPORT_UNKNOWN;
72                 break;
73         default:
74                 /* do nothing */
75                 break;
76         }
77 }
78
79 static int
80 lpfc_alloc_vpi(struct lpfc_hba *phba)
81 {
82         int  vpi;
83
84         spin_lock_irq(&phba->hbalock);
85         /* Start at bit 1 because vpi zero is reserved for the physical port */
86         vpi = find_next_zero_bit(phba->vpi_bmask, (phba->max_vpi + 1), 1);
87         if (vpi > phba->max_vpi)
88                 vpi = 0;
89         else
90                 set_bit(vpi, phba->vpi_bmask);
91         spin_unlock_irq(&phba->hbalock);
92         return vpi;
93 }
94
95 static void
96 lpfc_free_vpi(struct lpfc_hba *phba, int vpi)
97 {
98         spin_lock_irq(&phba->hbalock);
99         clear_bit(vpi, phba->vpi_bmask);
100         spin_unlock_irq(&phba->hbalock);
101 }
102
103 static int
104 lpfc_vport_sparm(struct lpfc_hba *phba, struct lpfc_vport *vport)
105 {
106         LPFC_MBOXQ_t *pmb;
107         MAILBOX_t *mb;
108         struct lpfc_dmabuf *mp;
109         int  rc;
110
111         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
112         if (!pmb) {
113                 return -ENOMEM;
114         }
115         mb = &pmb->mb;
116
117         lpfc_read_sparam(phba, pmb, vport->vpi);
118         /*
119          * Grab buffer pointer and clear context1 so we can use
120          * lpfc_sli_issue_box_wait
121          */
122         mp = (struct lpfc_dmabuf *) pmb->context1;
123         pmb->context1 = NULL;
124
125         pmb->vport = vport;
126         rc = lpfc_sli_issue_mbox_wait(phba, pmb, phba->fc_ratov * 2);
127         if (rc != MBX_SUCCESS) {
128                 if (signal_pending(current)) {
129                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT | LOG_VPORT,
130                                          "1830 Signal aborted mbxCmd x%x\n",
131                                          mb->mbxCommand);
132                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
133                         kfree(mp);
134                         if (rc != MBX_TIMEOUT)
135                                 mempool_free(pmb, phba->mbox_mem_pool);
136                         return -EINTR;
137                 } else {
138                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT | LOG_VPORT,
139                                          "1818 VPort failed init, mbxCmd x%x "
140                                          "READ_SPARM mbxStatus x%x, rc = x%x\n",
141                                          mb->mbxCommand, mb->mbxStatus, rc);
142                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
143                         kfree(mp);
144                         if (rc != MBX_TIMEOUT)
145                                 mempool_free(pmb, phba->mbox_mem_pool);
146                         return -EIO;
147                 }
148         }
149
150         memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
151         memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
152                sizeof (struct lpfc_name));
153         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
154                sizeof (struct lpfc_name));
155
156         lpfc_mbuf_free(phba, mp->virt, mp->phys);
157         kfree(mp);
158         mempool_free(pmb, phba->mbox_mem_pool);
159
160         return 0;
161 }
162
163 static int
164 lpfc_valid_wwn_format(struct lpfc_hba *phba, struct lpfc_name *wwn,
165                       const char *name_type)
166 {
167                                 /* ensure that IEEE format 1 addresses
168                                  * contain zeros in bits 59-48
169                                  */
170         if (!((wwn->u.wwn[0] >> 4) == 1 &&
171               ((wwn->u.wwn[0] & 0xf) != 0 || (wwn->u.wwn[1] & 0xf) != 0)))
172                 return 1;
173
174         lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
175                         "1822 Invalid %s: %02x:%02x:%02x:%02x:"
176                         "%02x:%02x:%02x:%02x\n",
177                         name_type,
178                         wwn->u.wwn[0], wwn->u.wwn[1],
179                         wwn->u.wwn[2], wwn->u.wwn[3],
180                         wwn->u.wwn[4], wwn->u.wwn[5],
181                         wwn->u.wwn[6], wwn->u.wwn[7]);
182         return 0;
183 }
184
185 static int
186 lpfc_unique_wwpn(struct lpfc_hba *phba, struct lpfc_vport *new_vport)
187 {
188         struct lpfc_vport *vport;
189         unsigned long flags;
190
191         spin_lock_irqsave(&phba->hbalock, flags);
192         list_for_each_entry(vport, &phba->port_list, listentry) {
193                 if (vport == new_vport)
194                         continue;
195                 /* If they match, return not unique */
196                 if (memcmp(&vport->fc_sparam.portName,
197                            &new_vport->fc_sparam.portName,
198                            sizeof(struct lpfc_name)) == 0) {
199                         spin_unlock_irqrestore(&phba->hbalock, flags);
200                         return 0;
201                 }
202         }
203         spin_unlock_irqrestore(&phba->hbalock, flags);
204         return 1;
205 }
206
207 int
208 lpfc_vport_create(struct fc_vport *fc_vport, bool disable)
209 {
210         struct lpfc_nodelist *ndlp;
211         struct Scsi_Host *shost = fc_vport->shost;
212         struct lpfc_vport *pport = (struct lpfc_vport *) shost->hostdata;
213         struct lpfc_hba   *phba = pport->phba;
214         struct lpfc_vport *vport = NULL;
215         int instance;
216         int vpi;
217         int rc = VPORT_ERROR;
218         int status;
219         int size;
220
221         if ((phba->sli_rev < 3) ||
222                 !(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
223                 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
224                                 "1808 Create VPORT failed: "
225                                 "NPIV is not enabled: SLImode:%d\n",
226                                 phba->sli_rev);
227                 rc = VPORT_INVAL;
228                 goto error_out;
229         }
230
231         vpi = lpfc_alloc_vpi(phba);
232         if (vpi == 0) {
233                 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
234                                 "1809 Create VPORT failed: "
235                                 "Max VPORTs (%d) exceeded\n",
236                                 phba->max_vpi);
237                 rc = VPORT_NORESOURCES;
238                 goto error_out;
239         }
240
241
242         /* Assign an unused board number */
243         if ((instance = lpfc_get_instance()) < 0) {
244                 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
245                                 "1810 Create VPORT failed: Cannot get "
246                                 "instance number\n");
247                 lpfc_free_vpi(phba, vpi);
248                 rc = VPORT_NORESOURCES;
249                 goto error_out;
250         }
251
252         vport = lpfc_create_port(phba, instance, &fc_vport->dev);
253         if (!vport) {
254                 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
255                                 "1811 Create VPORT failed: vpi x%x\n", vpi);
256                 lpfc_free_vpi(phba, vpi);
257                 rc = VPORT_NORESOURCES;
258                 goto error_out;
259         }
260
261         vport->vpi = vpi;
262         lpfc_debugfs_initialize(vport);
263
264         if ((status = lpfc_vport_sparm(phba, vport))) {
265                 if (status == -EINTR) {
266                         lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
267                                          "1831 Create VPORT Interrupted.\n");
268                         rc = VPORT_ERROR;
269                 } else {
270                         lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
271                                          "1813 Create VPORT failed. "
272                                          "Cannot get sparam\n");
273                         rc = VPORT_NORESOURCES;
274                 }
275                 lpfc_free_vpi(phba, vpi);
276                 destroy_port(vport);
277                 goto error_out;
278         }
279
280         memcpy(vport->fc_portname.u.wwn, vport->fc_sparam.portName.u.wwn, 8);
281         memcpy(vport->fc_nodename.u.wwn, vport->fc_sparam.nodeName.u.wwn, 8);
282         size = strnlen(fc_vport->symbolic_name, LPFC_VNAME_LEN);
283         if (size) {
284                 vport->vname = kzalloc(size+1, GFP_KERNEL);
285                 if (!vport->vname) {
286                         lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
287                                          "1814 Create VPORT failed. "
288                                          "vname allocation failed.\n");
289                         rc = VPORT_ERROR;
290                         lpfc_free_vpi(phba, vpi);
291                         destroy_port(vport);
292                         goto error_out;
293                 }
294                 memcpy(vport->vname, fc_vport->symbolic_name, size+1);
295         }
296         if (fc_vport->node_name != 0)
297                 u64_to_wwn(fc_vport->node_name, vport->fc_nodename.u.wwn);
298         if (fc_vport->port_name != 0)
299                 u64_to_wwn(fc_vport->port_name, vport->fc_portname.u.wwn);
300
301         memcpy(&vport->fc_sparam.portName, vport->fc_portname.u.wwn, 8);
302         memcpy(&vport->fc_sparam.nodeName, vport->fc_nodename.u.wwn, 8);
303
304         if (!lpfc_valid_wwn_format(phba, &vport->fc_sparam.nodeName, "WWNN") ||
305             !lpfc_valid_wwn_format(phba, &vport->fc_sparam.portName, "WWPN")) {
306                 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
307                                  "1821 Create VPORT failed. "
308                                  "Invalid WWN format\n");
309                 lpfc_free_vpi(phba, vpi);
310                 destroy_port(vport);
311                 rc = VPORT_INVAL;
312                 goto error_out;
313         }
314
315         if (!lpfc_unique_wwpn(phba, vport)) {
316                 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
317                                  "1823 Create VPORT failed. "
318                                  "Duplicate WWN on HBA\n");
319                 lpfc_free_vpi(phba, vpi);
320                 destroy_port(vport);
321                 rc = VPORT_INVAL;
322                 goto error_out;
323         }
324
325         *(struct lpfc_vport **)fc_vport->dd_data = vport;
326         vport->fc_vport = fc_vport;
327
328         if ((phba->link_state < LPFC_LINK_UP) ||
329             (phba->fc_topology == TOPOLOGY_LOOP)) {
330                 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
331                 rc = VPORT_OK;
332                 goto out;
333         }
334
335         if (disable) {
336                 rc = VPORT_OK;
337                 goto out;
338         }
339
340         /* Use the Physical nodes Fabric NDLP to determine if the link is
341          * up and ready to FDISC.
342          */
343         ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
344         if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
345             ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
346                 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
347                         lpfc_set_disctmo(vport);
348                         lpfc_initial_fdisc(vport);
349                 } else {
350                         lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
351                         lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
352                                          "0262 No NPIV Fabric support\n");
353                 }
354         } else {
355                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
356         }
357         rc = VPORT_OK;
358
359 out:
360         lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
361                         "1825 Vport Created.\n");
362         lpfc_host_attrib_init(lpfc_shost_from_vport(vport));
363 error_out:
364         return rc;
365 }
366
367 static int
368 disable_vport(struct fc_vport *fc_vport)
369 {
370         struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
371         struct lpfc_hba   *phba = vport->phba;
372         struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
373         long timeout;
374
375         ndlp = lpfc_findnode_did(vport, Fabric_DID);
376         if (ndlp && NLP_CHK_NODE_ACT(ndlp)
377             && phba->link_state >= LPFC_LINK_UP) {
378                 vport->unreg_vpi_cmpl = VPORT_INVAL;
379                 timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
380                 if (!lpfc_issue_els_npiv_logo(vport, ndlp))
381                         while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout)
382                                 timeout = schedule_timeout(timeout);
383         }
384
385         lpfc_sli_host_down(vport);
386
387         /* Mark all nodes for discovery so we can remove them by
388          * calling lpfc_cleanup_rpis(vport, 1)
389          */
390         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
391                 if (!NLP_CHK_NODE_ACT(ndlp))
392                         continue;
393                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
394                         continue;
395                 lpfc_disc_state_machine(vport, ndlp, NULL,
396                                         NLP_EVT_DEVICE_RECOVERY);
397         }
398         lpfc_cleanup_rpis(vport, 1);
399
400         lpfc_stop_vport_timers(vport);
401         lpfc_unreg_all_rpis(vport);
402         lpfc_unreg_default_rpis(vport);
403         /*
404          * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi) does the
405          * scsi_host_put() to release the vport.
406          */
407         lpfc_mbx_unreg_vpi(vport);
408
409         lpfc_vport_set_state(vport, FC_VPORT_DISABLED);
410         lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
411                          "1826 Vport Disabled.\n");
412         return VPORT_OK;
413 }
414
415 static int
416 enable_vport(struct fc_vport *fc_vport)
417 {
418         struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
419         struct lpfc_hba   *phba = vport->phba;
420         struct lpfc_nodelist *ndlp = NULL;
421
422         if ((phba->link_state < LPFC_LINK_UP) ||
423             (phba->fc_topology == TOPOLOGY_LOOP)) {
424                 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
425                 return VPORT_OK;
426         }
427
428         vport->load_flag |= FC_LOADING;
429         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
430
431         /* Use the Physical nodes Fabric NDLP to determine if the link is
432          * up and ready to FDISC.
433          */
434         ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
435         if (ndlp && NLP_CHK_NODE_ACT(ndlp)
436             && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
437                 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
438                         lpfc_set_disctmo(vport);
439                         lpfc_initial_fdisc(vport);
440                 } else {
441                         lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
442                         lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
443                                          "0264 No NPIV Fabric support\n");
444                 }
445         } else {
446                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
447         }
448         lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
449                          "1827 Vport Enabled.\n");
450         return VPORT_OK;
451 }
452
453 int
454 lpfc_vport_disable(struct fc_vport *fc_vport, bool disable)
455 {
456         if (disable)
457                 return disable_vport(fc_vport);
458         else
459                 return enable_vport(fc_vport);
460 }
461
462
463 int
464 lpfc_vport_delete(struct fc_vport *fc_vport)
465 {
466         struct lpfc_nodelist *ndlp = NULL;
467         struct Scsi_Host *shost = (struct Scsi_Host *) fc_vport->shost;
468         struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
469         struct lpfc_hba   *phba = vport->phba;
470         long timeout;
471
472         if (vport->port_type == LPFC_PHYSICAL_PORT) {
473                 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
474                                  "1812 vport_delete failed: Cannot delete "
475                                  "physical host\n");
476                 return VPORT_ERROR;
477         }
478         /*
479          * If we are not unloading the driver then prevent the vport_delete
480          * from happening until after this vport's discovery is finished.
481          */
482         if (!(phba->pport->load_flag & FC_UNLOADING)) {
483                 int check_count = 0;
484                 while (check_count < ((phba->fc_ratov * 3) + 3) &&
485                        vport->port_state > LPFC_VPORT_FAILED &&
486                        vport->port_state < LPFC_VPORT_READY) {
487                         check_count++;
488                         msleep(1000);
489                 }
490                 if (vport->port_state > LPFC_VPORT_FAILED &&
491                     vport->port_state < LPFC_VPORT_READY)
492                         return -EAGAIN;
493         }
494         /*
495          * This is a bit of a mess.  We want to ensure the shost doesn't get
496          * torn down until we're done with the embedded lpfc_vport structure.
497          *
498          * Beyond holding a reference for this function, we also need a
499          * reference for outstanding I/O requests we schedule during delete
500          * processing.  But once we scsi_remove_host() we can no longer obtain
501          * a reference through scsi_host_get().
502          *
503          * So we take two references here.  We release one reference at the
504          * bottom of the function -- after delinking the vport.  And we
505          * release the other at the completion of the unreg_vpi that get's
506          * initiated after we've disposed of all other resources associated
507          * with the port.
508          */
509         if (!scsi_host_get(shost) || !scsi_host_get(shost))
510                 return VPORT_INVAL;
511         spin_lock_irq(&phba->hbalock);
512         vport->load_flag |= FC_UNLOADING;
513         spin_unlock_irq(&phba->hbalock);
514         kfree(vport->vname);
515         lpfc_debugfs_terminate(vport);
516         fc_remove_host(lpfc_shost_from_vport(vport));
517         scsi_remove_host(lpfc_shost_from_vport(vport));
518
519         ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
520
521         /* In case of driver unload, we shall not perform fabric logo as the
522          * worker thread already stopped at this stage and, in this case, we
523          * can safely skip the fabric logo.
524          */
525         if (phba->pport->load_flag & FC_UNLOADING) {
526                 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
527                     ndlp->nlp_state == NLP_STE_UNMAPPED_NODE &&
528                     phba->link_state >= LPFC_LINK_UP) {
529                         /* First look for the Fabric ndlp */
530                         ndlp = lpfc_findnode_did(vport, Fabric_DID);
531                         if (!ndlp)
532                                 goto skip_logo;
533                         else if (!NLP_CHK_NODE_ACT(ndlp)) {
534                                 ndlp = lpfc_enable_node(vport, ndlp,
535                                                         NLP_STE_UNUSED_NODE);
536                                 if (!ndlp)
537                                         goto skip_logo;
538                         }
539                         /* Remove ndlp from vport npld list */
540                         lpfc_dequeue_node(vport, ndlp);
541
542                         /* Indicate free memory when release */
543                         spin_lock_irq(&phba->ndlp_lock);
544                         NLP_SET_FREE_REQ(ndlp);
545                         spin_unlock_irq(&phba->ndlp_lock);
546                         /* Kick off release ndlp when it can be safely done */
547                         lpfc_nlp_put(ndlp);
548                 }
549                 goto skip_logo;
550         }
551
552         /* Otherwise, we will perform fabric logo as needed */
553         if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
554             ndlp->nlp_state == NLP_STE_UNMAPPED_NODE &&
555             phba->link_state >= LPFC_LINK_UP &&
556             phba->fc_topology != TOPOLOGY_LOOP) {
557                 if (vport->cfg_enable_da_id) {
558                         timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
559                         if (!lpfc_ns_cmd(vport, SLI_CTNS_DA_ID, 0, 0))
560                                 while (vport->ct_flags && timeout)
561                                         timeout = schedule_timeout(timeout);
562                         else
563                                 lpfc_printf_log(vport->phba, KERN_WARNING,
564                                                 LOG_VPORT,
565                                                 "1829 CT command failed to "
566                                                 "delete objects on fabric. \n");
567                 }
568                 /* First look for the Fabric ndlp */
569                 ndlp = lpfc_findnode_did(vport, Fabric_DID);
570                 if (!ndlp) {
571                         /* Cannot find existing Fabric ndlp, allocate one */
572                         ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
573                         if (!ndlp)
574                                 goto skip_logo;
575                         lpfc_nlp_init(vport, ndlp, Fabric_DID);
576                         /* Indicate free memory when release */
577                         NLP_SET_FREE_REQ(ndlp);
578                 } else {
579                         if (!NLP_CHK_NODE_ACT(ndlp))
580                                 ndlp = lpfc_enable_node(vport, ndlp,
581                                                 NLP_STE_UNUSED_NODE);
582                                 if (!ndlp)
583                                         goto skip_logo;
584
585                         /* Remove ndlp from vport npld list */
586                         lpfc_dequeue_node(vport, ndlp);
587                         spin_lock_irq(&phba->ndlp_lock);
588                         if (!NLP_CHK_FREE_REQ(ndlp))
589                                 /* Indicate free memory when release */
590                                 NLP_SET_FREE_REQ(ndlp);
591                         else {
592                                 /* Skip this if ndlp is already in free mode */
593                                 spin_unlock_irq(&phba->ndlp_lock);
594                                 goto skip_logo;
595                         }
596                         spin_unlock_irq(&phba->ndlp_lock);
597                 }
598                 vport->unreg_vpi_cmpl = VPORT_INVAL;
599                 timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
600                 if (!lpfc_issue_els_npiv_logo(vport, ndlp))
601                         while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout)
602                                 timeout = schedule_timeout(timeout);
603         }
604
605 skip_logo:
606         lpfc_cleanup(vport);
607         lpfc_sli_host_down(vport);
608
609         lpfc_stop_vport_timers(vport);
610
611         if (!(phba->pport->load_flag & FC_UNLOADING)) {
612                 lpfc_unreg_all_rpis(vport);
613                 lpfc_unreg_default_rpis(vport);
614                 /*
615                  * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi)
616                  * does the scsi_host_put() to release the vport.
617                  */
618                 lpfc_mbx_unreg_vpi(vport);
619         }
620
621         lpfc_free_vpi(phba, vport->vpi);
622         vport->work_port_events = 0;
623         spin_lock_irq(&phba->hbalock);
624         list_del_init(&vport->listentry);
625         spin_unlock_irq(&phba->hbalock);
626         lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
627                          "1828 Vport Deleted.\n");
628         scsi_host_put(shost);
629         return VPORT_OK;
630 }
631
632 struct lpfc_vport **
633 lpfc_create_vport_work_array(struct lpfc_hba *phba)
634 {
635         struct lpfc_vport *port_iterator;
636         struct lpfc_vport **vports;
637         int index = 0;
638         vports = kzalloc((phba->max_vpi + 1) * sizeof(struct lpfc_vport *),
639                          GFP_KERNEL);
640         if (vports == NULL)
641                 return NULL;
642         spin_lock_irq(&phba->hbalock);
643         list_for_each_entry(port_iterator, &phba->port_list, listentry) {
644                 if (!scsi_host_get(lpfc_shost_from_vport(port_iterator))) {
645                         lpfc_printf_vlog(port_iterator, KERN_WARNING, LOG_VPORT,
646                                          "1801 Create vport work array FAILED: "
647                                          "cannot do scsi_host_get\n");
648                         continue;
649                 }
650                 vports[index++] = port_iterator;
651         }
652         spin_unlock_irq(&phba->hbalock);
653         return vports;
654 }
655
656 void
657 lpfc_destroy_vport_work_array(struct lpfc_hba *phba, struct lpfc_vport **vports)
658 {
659         int i;
660         if (vports == NULL)
661                 return;
662         for (i=0; vports[i] != NULL && i <= phba->max_vpi; i++)
663                 scsi_host_put(lpfc_shost_from_vport(vports[i]));
664         kfree(vports);
665 }