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) 2004-2006 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
 220         if ((phba->sli_rev < 3) ||
 221                 !(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
 222                 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
 223                                 "1808 Create VPORT failed: "
 224                                 "NPIV is not enabled: SLImode:%d\n",
 225                                 phba->sli_rev);
 226                 rc = VPORT_INVAL;
 227                 goto error_out;
 228         }
 229
 230         vpi = lpfc_alloc_vpi(phba);
 231         if (vpi == 0) {
 232                 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
 233                                 "1809 Create VPORT failed: "
 234                                 "Max VPORTs (%d) exceeded\n",
 235                                 phba->max_vpi);
 236                 rc = VPORT_NORESOURCES;
 237                 goto error_out;
 238         }
 239
 240
 241         /* Assign an unused board number */
 242         if ((instance = lpfc_get_instance()) < 0) {
 243                 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
 244                                 "1810 Create VPORT failed: Cannot get "
 245                                 "instance number\n");
 246                 lpfc_free_vpi(phba, vpi);
 247                 rc = VPORT_NORESOURCES;
 248                 goto error_out;
 249         }
 250
 251         vport = lpfc_create_port(phba, instance, &fc_vport->dev);
 252         if (!vport) {
 253                 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
 254                                 "1811 Create VPORT failed: vpi x%x\n", vpi);
 255                 lpfc_free_vpi(phba, vpi);
 256                 rc = VPORT_NORESOURCES;
 257                 goto error_out;
 258         }
 259
 260         vport->vpi = vpi;
 261         lpfc_debugfs_initialize(vport);
 262
 263         if ((status = lpfc_vport_sparm(phba, vport))) {
 264                 if (status == -EINTR) {
 265                         lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 266                                          "1831 Create VPORT Interrupted.\n");
 267                         rc = VPORT_ERROR;
 268                 } else {
 269                         lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 270                                          "1813 Create VPORT failed. "
 271                                          "Cannot get sparam\n");
 272                         rc = VPORT_NORESOURCES;
 273                 }
 274                 lpfc_free_vpi(phba, vpi);
 275                 destroy_port(vport);
 276                 goto error_out;
 277         }
 278
 279         memcpy(vport->fc_portname.u.wwn, vport->fc_sparam.portName.u.wwn, 8);
 280         memcpy(vport->fc_nodename.u.wwn, vport->fc_sparam.nodeName.u.wwn, 8);
 281
 282         if (fc_vport->node_name != 0)
 283                 u64_to_wwn(fc_vport->node_name, vport->fc_nodename.u.wwn);
 284         if (fc_vport->port_name != 0)
 285                 u64_to_wwn(fc_vport->port_name, vport->fc_portname.u.wwn);
 286
 287         memcpy(&vport->fc_sparam.portName, vport->fc_portname.u.wwn, 8);
 288         memcpy(&vport->fc_sparam.nodeName, vport->fc_nodename.u.wwn, 8);
 289
 290         if (!lpfc_valid_wwn_format(phba, &vport->fc_sparam.nodeName, "WWNN") ||
 291             !lpfc_valid_wwn_format(phba, &vport->fc_sparam.portName, "WWPN")) {
 292                 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 293                                  "1821 Create VPORT failed. "
 294                                  "Invalid WWN format\n");
 295                 lpfc_free_vpi(phba, vpi);
 296                 destroy_port(vport);
 297                 rc = VPORT_INVAL;
 298                 goto error_out;
 299         }
 300
 301         if (!lpfc_unique_wwpn(phba, vport)) {
 302                 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 303                                  "1823 Create VPORT failed. "
 304                                  "Duplicate WWN on HBA\n");
 305                 lpfc_free_vpi(phba, vpi);
 306                 destroy_port(vport);
 307                 rc = VPORT_INVAL;
 308                 goto error_out;
 309         }
 310
 311         *(struct lpfc_vport **)fc_vport->dd_data = vport;
 312         vport->fc_vport = fc_vport;
 313
 314         if ((phba->link_state < LPFC_LINK_UP) ||
 315             (phba->fc_topology == TOPOLOGY_LOOP)) {
 316                 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
 317                 rc = VPORT_OK;
 318                 goto out;
 319         }
 320
 321         if (disable) {
 322                 rc = VPORT_OK;
 323                 goto out;
 324         }
 325
 326         /* Use the Physical nodes Fabric NDLP to determine if the link is
 327          * up and ready to FDISC.
 328          */
 329         ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
 330         if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
 331                 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
 332                         lpfc_set_disctmo(vport);
 333                         lpfc_initial_fdisc(vport);
 334                 } else {
 335                         lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
 336                         lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 337                                          "0262 No NPIV Fabric support\n");
 338                 }
 339         } else {
 340                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
 341         }
 342         rc = VPORT_OK;
 343
 344 out:
 345         lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 346                         "1825 Vport Created.\n");
 347         lpfc_host_attrib_init(lpfc_shost_from_vport(vport));
 348 error_out:
 349         return rc;
 350 }
 351
 352 static int
 353 disable_vport(struct fc_vport *fc_vport)
 354 {
 355         struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
 356         struct lpfc_hba   *phba = vport->phba;
 357         struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
 358         long timeout;
 359
 360         ndlp = lpfc_findnode_did(vport, Fabric_DID);
 361         if (ndlp && phba->link_state >= LPFC_LINK_UP) {
 362                 vport->unreg_vpi_cmpl = VPORT_INVAL;
 363                 timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
 364                 if (!lpfc_issue_els_npiv_logo(vport, ndlp))
 365                         while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout)
 366                                 timeout = schedule_timeout(timeout);
 367         }
 368
 369         lpfc_sli_host_down(vport);
 370
 371         /* Mark all nodes for discovery so we can remove them by
 372          * calling lpfc_cleanup_rpis(vport, 1)
 373          */
 374         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
 375                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 376                         continue;
 377                 lpfc_disc_state_machine(vport, ndlp, NULL,
 378                                         NLP_EVT_DEVICE_RECOVERY);
 379         }
 380         lpfc_cleanup_rpis(vport, 1);
 381
 382         lpfc_stop_vport_timers(vport);
 383         lpfc_unreg_all_rpis(vport);
 384         lpfc_unreg_default_rpis(vport);
 385         /*
 386          * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi) does the
 387          * scsi_host_put() to release the vport.
 388          */
 389         lpfc_mbx_unreg_vpi(vport);
 390
 391         lpfc_vport_set_state(vport, FC_VPORT_DISABLED);
 392         lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 393                          "1826 Vport Disabled.\n");
 394         return VPORT_OK;
 395 }
 396
 397 static int
 398 enable_vport(struct fc_vport *fc_vport)
 399 {
 400         struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
 401         struct lpfc_hba   *phba = vport->phba;
 402         struct lpfc_nodelist *ndlp = NULL;
 403
 404         if ((phba->link_state < LPFC_LINK_UP) ||
 405             (phba->fc_topology == TOPOLOGY_LOOP)) {
 406                 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
 407                 return VPORT_OK;
 408         }
 409
 410         vport->load_flag |= FC_LOADING;
 411         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
 412
 413         /* Use the Physical nodes Fabric NDLP to determine if the link is
 414          * up and ready to FDISC.
 415          */
 416         ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
 417         if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
 418                 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
 419                         lpfc_set_disctmo(vport);
 420                         lpfc_initial_fdisc(vport);
 421                 } else {
 422                         lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
 423                         lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 424                                          "0264 No NPIV Fabric support\n");
 425                 }
 426         } else {
 427                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
 428         }
 429         lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 430                          "1827 Vport Enabled.\n");
 431         return VPORT_OK;
 432 }
 433
 434 int
 435 lpfc_vport_disable(struct fc_vport *fc_vport, bool disable)
 436 {
 437         if (disable)
 438                 return disable_vport(fc_vport);
 439         else
 440                 return enable_vport(fc_vport);
 441 }
 442
 443
 444 int
 445 lpfc_vport_delete(struct fc_vport *fc_vport)
 446 {
 447         struct lpfc_nodelist *ndlp = NULL;
 448         struct Scsi_Host *shost = (struct Scsi_Host *) fc_vport->shost;
 449         struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
 450         struct lpfc_hba   *phba = vport->phba;
 451         long timeout;
 452
 453         if (vport->port_type == LPFC_PHYSICAL_PORT) {
 454                 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 455                                  "1812 vport_delete failed: Cannot delete "
 456                                  "physical host\n");
 457                 return VPORT_ERROR;
 458         }
 459         /*
 460          * If we are not unloading the driver then prevent the vport_delete
 461          * from happening until after this vport's discovery is finished.
 462          */
 463         if (!(phba->pport->load_flag & FC_UNLOADING)) {
 464                 int check_count = 0;
 465                 while (check_count < ((phba->fc_ratov * 3) + 3) &&
 466                        vport->port_state > LPFC_VPORT_FAILED &&
 467                        vport->port_state < LPFC_VPORT_READY) {
 468                         check_count++;
 469                         msleep(1000);
 470                 }
 471                 if (vport->port_state > LPFC_VPORT_FAILED &&
 472                     vport->port_state < LPFC_VPORT_READY)
 473                         return -EAGAIN;
 474         }
 475         /*
 476          * This is a bit of a mess.  We want to ensure the shost doesn't get
 477          * torn down until we're done with the embedded lpfc_vport structure.
 478          *
 479          * Beyond holding a reference for this function, we also need a
 480          * reference for outstanding I/O requests we schedule during delete
 481          * processing.  But once we scsi_remove_host() we can no longer obtain
 482          * a reference through scsi_host_get().
 483          *
 484          * So we take two references here.  We release one reference at the
 485          * bottom of the function -- after delinking the vport.  And we
 486          * release the other at the completion of the unreg_vpi that get's
 487          * initiated after we've disposed of all other resources associated
 488          * with the port.
 489          */
 490         if (!scsi_host_get(shost) || !scsi_host_get(shost))
 491                 return VPORT_INVAL;
 492         spin_lock_irq(&phba->hbalock);
 493         vport->load_flag |= FC_UNLOADING;
 494         spin_unlock_irq(&phba->hbalock);
 495         kfree(vport->vname);
 496         lpfc_debugfs_terminate(vport);
 497         fc_remove_host(lpfc_shost_from_vport(vport));
 498         scsi_remove_host(lpfc_shost_from_vport(vport));
 499
 500         ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
 501         if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE &&
 502             phba->link_state >= LPFC_LINK_UP) {
 503                 if (vport->cfg_enable_da_id) {
 504                         timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
 505                         if (!lpfc_ns_cmd(vport, SLI_CTNS_DA_ID, 0, 0))
 506                                 while (vport->ct_flags && timeout)
 507                                         timeout = schedule_timeout(timeout);
 508                         else
 509                                 lpfc_printf_log(vport->phba, KERN_WARNING,
 510                                                 LOG_VPORT,
 511                                                 "1829 CT command failed to "
 512                                                 "delete objects on fabric. \n");
 513                 }
 514                 /* First look for the Fabric ndlp */
 515                 ndlp = lpfc_findnode_did(vport, Fabric_DID);
 516                 if (!ndlp) {
 517                         /* Cannot find existing Fabric ndlp, allocate one */
 518                         ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
 519                         if (!ndlp)
 520                                 goto skip_logo;
 521                         lpfc_nlp_init(vport, ndlp, Fabric_DID);
 522                 } else {
 523                         lpfc_dequeue_node(vport, ndlp);
 524                 }
 525                 vport->unreg_vpi_cmpl = VPORT_INVAL;
 526                 timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
 527                 if (!lpfc_issue_els_npiv_logo(vport, ndlp))
 528                         while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout)
 529                                 timeout = schedule_timeout(timeout);
 530         }
 531
 532 skip_logo:
 533         lpfc_cleanup(vport);
 534         lpfc_sli_host_down(vport);
 535
 536         lpfc_stop_vport_timers(vport);
 537         lpfc_unreg_all_rpis(vport);
 538
 539         if (!(phba->pport->load_flag & FC_UNLOADING)) {
 540                 lpfc_unreg_default_rpis(vport);
 541                 /*
 542                  * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi)
 543                  * does the scsi_host_put() to release the vport.
 544                  */
 545                 lpfc_mbx_unreg_vpi(vport);
 546         }
 547
 548         lpfc_free_vpi(phba, vport->vpi);
 549         vport->work_port_events = 0;
 550         spin_lock_irq(&phba->hbalock);
 551         list_del_init(&vport->listentry);
 552         spin_unlock_irq(&phba->hbalock);
 553         lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 554                          "1828 Vport Deleted.\n");
 555         scsi_host_put(shost);
 556         return VPORT_OK;
 557 }
 558
 559 struct lpfc_vport **
 560 lpfc_create_vport_work_array(struct lpfc_hba *phba)
 561 {
 562         struct lpfc_vport *port_iterator;
 563         struct lpfc_vport **vports;
 564         int index = 0;
 565         vports = kzalloc((phba->max_vpi + 1) * sizeof(struct lpfc_vport *),
 566                          GFP_KERNEL);
 567         if (vports == NULL)
 568                 return NULL;
 569         spin_lock_irq(&phba->hbalock);
 570         list_for_each_entry(port_iterator, &phba->port_list, listentry) {
 571                 if (!scsi_host_get(lpfc_shost_from_vport(port_iterator))) {
 572                         lpfc_printf_vlog(port_iterator, KERN_WARNING, LOG_VPORT,
 573                                          "1801 Create vport work array FAILED: "
 574                                          "cannot do scsi_host_get\n");
 575                         continue;
 576                 }
 577                 vports[index++] = port_iterator;
 578         }
 579         spin_unlock_irq(&phba->hbalock);
 580         return vports;
 581 }
 582
 583 void
 584 lpfc_destroy_vport_work_array(struct lpfc_hba *phba, struct lpfc_vport **vports)
 585 {
 586         int i;
 587         if (vports == NULL)
 588                 return;
 589         for (i=0; vports[i] != NULL && i <= phba->max_vpi; i++)
 590                 scsi_host_put(lpfc_shost_from_vport(vports[i]));
 591         kfree(vports);
 592 }