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                 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT | LOG_VPORT,
 129                                  "1818 VPort failed init, mbxCmd x%x "
 130                                  "READ_SPARM mbxStatus x%x, rc = x%x\n",
 131                                  mb->mbxCommand, mb->mbxStatus, rc);
 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 -EIO;
 137         }
 138
 139         memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
 140         memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
 141                sizeof (struct lpfc_name));
 142         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
 143                sizeof (struct lpfc_name));
 144
 145         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 146         kfree(mp);
 147         mempool_free(pmb, phba->mbox_mem_pool);
 148
 149         return 0;
 150 }
 151
 152 static int
 153 lpfc_valid_wwn_format(struct lpfc_hba *phba, struct lpfc_name *wwn,
 154                       const char *name_type)
 155 {
 156                                 /* ensure that IEEE format 1 addresses
 157                                  * contain zeros in bits 59-48
 158                                  */
 159         if (!((wwn->u.wwn[0] >> 4) == 1 &&
 160               ((wwn->u.wwn[0] & 0xf) != 0 || (wwn->u.wwn[1] & 0xf) != 0)))
 161                 return 1;
 162
 163         lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
 164                         "1822 Invalid %s: %02x:%02x:%02x:%02x:"
 165                         "%02x:%02x:%02x:%02x\n",
 166                         name_type,
 167                         wwn->u.wwn[0], wwn->u.wwn[1],
 168                         wwn->u.wwn[2], wwn->u.wwn[3],
 169                         wwn->u.wwn[4], wwn->u.wwn[5],
 170                         wwn->u.wwn[6], wwn->u.wwn[7]);
 171         return 0;
 172 }
 173
 174 static int
 175 lpfc_unique_wwpn(struct lpfc_hba *phba, struct lpfc_vport *new_vport)
 176 {
 177         struct lpfc_vport *vport;
 178         unsigned long flags;
 179
 180         spin_lock_irqsave(&phba->hbalock, flags);
 181         list_for_each_entry(vport, &phba->port_list, listentry) {
 182                 if (vport == new_vport)
 183                         continue;
 184                 /* If they match, return not unique */
 185                 if (memcmp(&vport->fc_sparam.portName,
 186                            &new_vport->fc_sparam.portName,
 187                            sizeof(struct lpfc_name)) == 0) {
 188                         spin_unlock_irqrestore(&phba->hbalock, flags);
 189                         return 0;
 190                 }
 191         }
 192         spin_unlock_irqrestore(&phba->hbalock, flags);
 193         return 1;
 194 }
 195
 196 int
 197 lpfc_vport_create(struct fc_vport *fc_vport, bool disable)
 198 {
 199         struct lpfc_nodelist *ndlp;
 200         struct Scsi_Host *shost = fc_vport->shost;
 201         struct lpfc_vport *pport = (struct lpfc_vport *) shost->hostdata;
 202         struct lpfc_hba   *phba = pport->phba;
 203         struct lpfc_vport *vport = NULL;
 204         int instance;
 205         int vpi;
 206         int rc = VPORT_ERROR;
 207
 208         if ((phba->sli_rev < 3) ||
 209                 !(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
 210                 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
 211                                 "1808 Create VPORT failed: "
 212                                 "NPIV is not enabled: SLImode:%d\n",
 213                                 phba->sli_rev);
 214                 rc = VPORT_INVAL;
 215                 goto error_out;
 216         }
 217
 218         vpi = lpfc_alloc_vpi(phba);
 219         if (vpi == 0) {
 220                 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
 221                                 "1809 Create VPORT failed: "
 222                                 "Max VPORTs (%d) exceeded\n",
 223                                 phba->max_vpi);
 224                 rc = VPORT_NORESOURCES;
 225                 goto error_out;
 226         }
 227
 228
 229         /* Assign an unused board number */
 230         if ((instance = lpfc_get_instance()) < 0) {
 231                 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
 232                                 "1810 Create VPORT failed: Cannot get "
 233                                 "instance number\n");
 234                 lpfc_free_vpi(phba, vpi);
 235                 rc = VPORT_NORESOURCES;
 236                 goto error_out;
 237         }
 238
 239         vport = lpfc_create_port(phba, instance, &fc_vport->dev);
 240         if (!vport) {
 241                 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
 242                                 "1811 Create VPORT failed: vpi x%x\n", vpi);
 243                 lpfc_free_vpi(phba, vpi);
 244                 rc = VPORT_NORESOURCES;
 245                 goto error_out;
 246         }
 247
 248         vport->vpi = vpi;
 249         lpfc_debugfs_initialize(vport);
 250
 251         if (lpfc_vport_sparm(phba, vport)) {
 252                 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 253                                  "1813 Create VPORT failed. "
 254                                  "Cannot get sparam\n");
 255                 lpfc_free_vpi(phba, vpi);
 256                 destroy_port(vport);
 257                 rc = VPORT_NORESOURCES;
 258                 goto error_out;
 259         }
 260
 261         memcpy(vport->fc_portname.u.wwn, vport->fc_sparam.portName.u.wwn, 8);
 262         memcpy(vport->fc_nodename.u.wwn, vport->fc_sparam.nodeName.u.wwn, 8);
 263
 264         if (fc_vport->node_name != 0)
 265                 u64_to_wwn(fc_vport->node_name, vport->fc_nodename.u.wwn);
 266         if (fc_vport->port_name != 0)
 267                 u64_to_wwn(fc_vport->port_name, vport->fc_portname.u.wwn);
 268
 269         memcpy(&vport->fc_sparam.portName, vport->fc_portname.u.wwn, 8);
 270         memcpy(&vport->fc_sparam.nodeName, vport->fc_nodename.u.wwn, 8);
 271
 272         if (!lpfc_valid_wwn_format(phba, &vport->fc_sparam.nodeName, "WWNN") ||
 273             !lpfc_valid_wwn_format(phba, &vport->fc_sparam.portName, "WWPN")) {
 274                 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 275                                  "1821 Create VPORT failed. "
 276                                  "Invalid WWN format\n");
 277                 lpfc_free_vpi(phba, vpi);
 278                 destroy_port(vport);
 279                 rc = VPORT_INVAL;
 280                 goto error_out;
 281         }
 282
 283         if (!lpfc_unique_wwpn(phba, vport)) {
 284                 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 285                                  "1823 Create VPORT failed. "
 286                                  "Duplicate WWN on HBA\n");
 287                 lpfc_free_vpi(phba, vpi);
 288                 destroy_port(vport);
 289                 rc = VPORT_INVAL;
 290                 goto error_out;
 291         }
 292
 293         *(struct lpfc_vport **)fc_vport->dd_data = vport;
 294         vport->fc_vport = fc_vport;
 295
 296         if ((phba->link_state < LPFC_LINK_UP) ||
 297             (phba->fc_topology == TOPOLOGY_LOOP)) {
 298                 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
 299                 rc = VPORT_OK;
 300                 goto out;
 301         }
 302
 303         if (disable) {
 304                 rc = VPORT_OK;
 305                 goto out;
 306         }
 307
 308         /* Use the Physical nodes Fabric NDLP to determine if the link is
 309          * up and ready to FDISC.
 310          */
 311         ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
 312         if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
 313                 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
 314                         lpfc_set_disctmo(vport);
 315                         lpfc_initial_fdisc(vport);
 316                 } else {
 317                         lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
 318                         lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 319                                          "0262 No NPIV Fabric support\n");
 320                 }
 321         } else {
 322                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
 323         }
 324         rc = VPORT_OK;
 325
 326 out:
 327         lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 328                         "1825 Vport Created.\n");
 329         lpfc_host_attrib_init(lpfc_shost_from_vport(vport));
 330 error_out:
 331         return rc;
 332 }
 333
 334 static int
 335 disable_vport(struct fc_vport *fc_vport)
 336 {
 337         struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
 338         struct lpfc_hba   *phba = vport->phba;
 339         struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
 340         long timeout;
 341
 342         ndlp = lpfc_findnode_did(vport, Fabric_DID);
 343         if (ndlp && phba->link_state >= LPFC_LINK_UP) {
 344                 vport->unreg_vpi_cmpl = VPORT_INVAL;
 345                 timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
 346                 if (!lpfc_issue_els_npiv_logo(vport, ndlp))
 347                         while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout)
 348                                 timeout = schedule_timeout(timeout);
 349         }
 350
 351         lpfc_sli_host_down(vport);
 352
 353         /* Mark all nodes for discovery so we can remove them by
 354          * calling lpfc_cleanup_rpis(vport, 1)
 355          */
 356         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
 357                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 358                         continue;
 359                 lpfc_disc_state_machine(vport, ndlp, NULL,
 360                                         NLP_EVT_DEVICE_RECOVERY);
 361         }
 362         lpfc_cleanup_rpis(vport, 1);
 363
 364         lpfc_stop_vport_timers(vport);
 365         lpfc_unreg_all_rpis(vport);
 366         lpfc_unreg_default_rpis(vport);
 367         /*
 368          * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi) does the
 369          * scsi_host_put() to release the vport.
 370          */
 371         lpfc_mbx_unreg_vpi(vport);
 372
 373         lpfc_vport_set_state(vport, FC_VPORT_DISABLED);
 374         lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 375                          "1826 Vport Disabled.\n");
 376         return VPORT_OK;
 377 }
 378
 379 static int
 380 enable_vport(struct fc_vport *fc_vport)
 381 {
 382         struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
 383         struct lpfc_hba   *phba = vport->phba;
 384         struct lpfc_nodelist *ndlp = NULL;
 385
 386         if ((phba->link_state < LPFC_LINK_UP) ||
 387             (phba->fc_topology == TOPOLOGY_LOOP)) {
 388                 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
 389                 return VPORT_OK;
 390         }
 391
 392         vport->load_flag |= FC_LOADING;
 393         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
 394
 395         /* Use the Physical nodes Fabric NDLP to determine if the link is
 396          * up and ready to FDISC.
 397          */
 398         ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
 399         if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
 400                 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
 401                         lpfc_set_disctmo(vport);
 402                         lpfc_initial_fdisc(vport);
 403                 } else {
 404                         lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
 405                         lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 406                                          "0264 No NPIV Fabric support\n");
 407                 }
 408         } else {
 409                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
 410         }
 411         lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 412                          "1827 Vport Enabled.\n");
 413         return VPORT_OK;
 414 }
 415
 416 int
 417 lpfc_vport_disable(struct fc_vport *fc_vport, bool disable)
 418 {
 419         if (disable)
 420                 return disable_vport(fc_vport);
 421         else
 422                 return enable_vport(fc_vport);
 423 }
 424
 425
 426 int
 427 lpfc_vport_delete(struct fc_vport *fc_vport)
 428 {
 429         struct lpfc_nodelist *ndlp = NULL;
 430         struct lpfc_nodelist *next_ndlp;
 431         struct Scsi_Host *shost = (struct Scsi_Host *) fc_vport->shost;
 432         struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
 433         struct lpfc_hba   *phba = vport->phba;
 434         long timeout;
 435
 436         if (vport->port_type == LPFC_PHYSICAL_PORT) {
 437                 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 438                                  "1812 vport_delete failed: Cannot delete "
 439                                  "physical host\n");
 440                 return VPORT_ERROR;
 441         }
 442         /*
 443          * If we are not unloading the driver then prevent the vport_delete
 444          * from happening until after this vport's discovery is finished.
 445          */
 446         if (!(phba->pport->load_flag & FC_UNLOADING)) {
 447                 int check_count = 0;
 448                 while (check_count < ((phba->fc_ratov * 3) + 3) &&
 449                        vport->port_state > LPFC_VPORT_FAILED &&
 450                        vport->port_state < LPFC_VPORT_READY) {
 451                         check_count++;
 452                         msleep(1000);
 453                 }
 454                 if (vport->port_state > LPFC_VPORT_FAILED &&
 455                     vport->port_state < LPFC_VPORT_READY)
 456                         return -EAGAIN;
 457         }
 458         /*
 459          * This is a bit of a mess.  We want to ensure the shost doesn't get
 460          * torn down until we're done with the embedded lpfc_vport structure.
 461          *
 462          * Beyond holding a reference for this function, we also need a
 463          * reference for outstanding I/O requests we schedule during delete
 464          * processing.  But once we scsi_remove_host() we can no longer obtain
 465          * a reference through scsi_host_get().
 466          *
 467          * So we take two references here.  We release one reference at the
 468          * bottom of the function -- after delinking the vport.  And we
 469          * release the other at the completion of the unreg_vpi that get's
 470          * initiated after we've disposed of all other resources associated
 471          * with the port.
 472          */
 473         if (!scsi_host_get(shost) || !scsi_host_get(shost))
 474                 return VPORT_INVAL;
 475         spin_lock_irq(&phba->hbalock);
 476         vport->load_flag |= FC_UNLOADING;
 477         spin_unlock_irq(&phba->hbalock);
 478         kfree(vport->vname);
 479         lpfc_debugfs_terminate(vport);
 480         fc_remove_host(lpfc_shost_from_vport(vport));
 481         scsi_remove_host(lpfc_shost_from_vport(vport));
 482
 483         ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
 484         if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE &&
 485             phba->link_state >= LPFC_LINK_UP) {
 486                 if (vport->cfg_enable_da_id) {
 487                         timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
 488                         if (!lpfc_ns_cmd(vport, SLI_CTNS_DA_ID, 0, 0))
 489                                 while (vport->ct_flags && timeout)
 490                                         timeout = schedule_timeout(timeout);
 491                         else
 492                                 lpfc_printf_log(vport->phba, KERN_WARNING,
 493                                                 LOG_VPORT,
 494                                                 "1829 CT command failed to "
 495                                                 "delete objects on fabric. \n");
 496                 }
 497                 /* First look for the Fabric ndlp */
 498                 ndlp = lpfc_findnode_did(vport, Fabric_DID);
 499                 if (!ndlp) {
 500                         /* Cannot find existing Fabric ndlp, allocate one */
 501                         ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
 502                         if (!ndlp)
 503                                 goto skip_logo;
 504                         lpfc_nlp_init(vport, ndlp, Fabric_DID);
 505                 } else {
 506                         lpfc_dequeue_node(vport, ndlp);
 507                 }
 508                 vport->unreg_vpi_cmpl = VPORT_INVAL;
 509                 timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
 510                 if (!lpfc_issue_els_npiv_logo(vport, ndlp))
 511                         while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout)
 512                                 timeout = schedule_timeout(timeout);
 513         }
 514
 515 skip_logo:
 516         lpfc_sli_host_down(vport);
 517
 518         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
 519                 lpfc_disc_state_machine(vport, ndlp, NULL,
 520                                              NLP_EVT_DEVICE_RECOVERY);
 521                 lpfc_disc_state_machine(vport, ndlp, NULL,
 522                                              NLP_EVT_DEVICE_RM);
 523         }
 524
 525         lpfc_stop_vport_timers(vport);
 526         lpfc_unreg_all_rpis(vport);
 527         lpfc_unreg_default_rpis(vport);
 528         /*
 529          * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi) does the
 530          * scsi_host_put() to release the vport.
 531          */
 532         lpfc_mbx_unreg_vpi(vport);
 533
 534         lpfc_free_vpi(phba, vport->vpi);
 535         vport->work_port_events = 0;
 536         spin_lock_irq(&phba->hbalock);
 537         list_del_init(&vport->listentry);
 538         spin_unlock_irq(&phba->hbalock);
 539         lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 540                          "1828 Vport Deleted.\n");
 541         scsi_host_put(shost);
 542         return VPORT_OK;
 543 }
 544
 545 EXPORT_SYMBOL(lpfc_vport_create);
 546 EXPORT_SYMBOL(lpfc_vport_delete);
 547
 548 struct lpfc_vport **
 549 lpfc_create_vport_work_array(struct lpfc_hba *phba)
 550 {
 551         struct lpfc_vport *port_iterator;
 552         struct lpfc_vport **vports;
 553         int index = 0;
 554         vports = kzalloc(LPFC_MAX_VPORTS * sizeof(struct lpfc_vport *),
 555                          GFP_KERNEL);
 556         if (vports == NULL)
 557                 return NULL;
 558         spin_lock_irq(&phba->hbalock);
 559         list_for_each_entry(port_iterator, &phba->port_list, listentry) {
 560                 if (!scsi_host_get(lpfc_shost_from_vport(port_iterator))) {
 561                         lpfc_printf_vlog(port_iterator, KERN_WARNING, LOG_VPORT,
 562                                          "1801 Create vport work array FAILED: "
 563                                          "cannot do scsi_host_get\n");
 564                         continue;
 565                 }
 566                 vports[index++] = port_iterator;
 567         }
 568         spin_unlock_irq(&phba->hbalock);
 569         return vports;
 570 }
 571
 572 void
 573 lpfc_destroy_vport_work_array(struct lpfc_vport **vports)
 574 {
 575         int i;
 576         if (vports == NULL)
 577                 return;
 578         for (i=0; vports[i] != NULL && i < LPFC_MAX_VPORTS; i++)
 579                 scsi_host_put(lpfc_shost_from_vport(vports[i]));
 580         kfree(vports);
 581 }