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
 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 && NLP_CHK_NODE_ACT(ndlp) &&
 331             ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
 332                 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
 333                         lpfc_set_disctmo(vport);
 334                         lpfc_initial_fdisc(vport);
 335                 } else {
 336                         lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
 337                         lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 338                                          "0262 No NPIV Fabric support\n");
 339                 }
 340         } else {
 341                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
 342         }
 343         rc = VPORT_OK;
 344
 345 out:
 346         lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 347                         "1825 Vport Created.\n");
 348         lpfc_host_attrib_init(lpfc_shost_from_vport(vport));
 349 error_out:
 350         return rc;
 351 }
 352
 353 static int
 354 disable_vport(struct fc_vport *fc_vport)
 355 {
 356         struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
 357         struct lpfc_hba   *phba = vport->phba;
 358         struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
 359         long timeout;
 360
 361         ndlp = lpfc_findnode_did(vport, Fabric_DID);
 362         if (ndlp && NLP_CHK_NODE_ACT(ndlp)
 363             && phba->link_state >= LPFC_LINK_UP) {
 364                 vport->unreg_vpi_cmpl = VPORT_INVAL;
 365                 timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
 366                 if (!lpfc_issue_els_npiv_logo(vport, ndlp))
 367                         while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout)
 368                                 timeout = schedule_timeout(timeout);
 369         }
 370
 371         lpfc_sli_host_down(vport);
 372
 373         /* Mark all nodes for discovery so we can remove them by
 374          * calling lpfc_cleanup_rpis(vport, 1)
 375          */
 376         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
 377                 if (!NLP_CHK_NODE_ACT(ndlp))
 378                         continue;
 379                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 380                         continue;
 381                 lpfc_disc_state_machine(vport, ndlp, NULL,
 382                                         NLP_EVT_DEVICE_RECOVERY);
 383         }
 384         lpfc_cleanup_rpis(vport, 1);
 385
 386         lpfc_stop_vport_timers(vport);
 387         lpfc_unreg_all_rpis(vport);
 388         lpfc_unreg_default_rpis(vport);
 389         /*
 390          * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi) does the
 391          * scsi_host_put() to release the vport.
 392          */
 393         lpfc_mbx_unreg_vpi(vport);
 394
 395         lpfc_vport_set_state(vport, FC_VPORT_DISABLED);
 396         lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 397                          "1826 Vport Disabled.\n");
 398         return VPORT_OK;
 399 }
 400
 401 static int
 402 enable_vport(struct fc_vport *fc_vport)
 403 {
 404         struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
 405         struct lpfc_hba   *phba = vport->phba;
 406         struct lpfc_nodelist *ndlp = NULL;
 407
 408         if ((phba->link_state < LPFC_LINK_UP) ||
 409             (phba->fc_topology == TOPOLOGY_LOOP)) {
 410                 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
 411                 return VPORT_OK;
 412         }
 413
 414         vport->load_flag |= FC_LOADING;
 415         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
 416
 417         /* Use the Physical nodes Fabric NDLP to determine if the link is
 418          * up and ready to FDISC.
 419          */
 420         ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
 421         if (ndlp && NLP_CHK_NODE_ACT(ndlp)
 422             && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
 423                 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
 424                         lpfc_set_disctmo(vport);
 425                         lpfc_initial_fdisc(vport);
 426                 } else {
 427                         lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
 428                         lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 429                                          "0264 No NPIV Fabric support\n");
 430                 }
 431         } else {
 432                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
 433         }
 434         lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 435                          "1827 Vport Enabled.\n");
 436         return VPORT_OK;
 437 }
 438
 439 int
 440 lpfc_vport_disable(struct fc_vport *fc_vport, bool disable)
 441 {
 442         if (disable)
 443                 return disable_vport(fc_vport);
 444         else
 445                 return enable_vport(fc_vport);
 446 }
 447
 448
 449 int
 450 lpfc_vport_delete(struct fc_vport *fc_vport)
 451 {
 452         struct lpfc_nodelist *ndlp = NULL;
 453         struct Scsi_Host *shost = (struct Scsi_Host *) fc_vport->shost;
 454         struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
 455         struct lpfc_hba   *phba = vport->phba;
 456         long timeout;
 457
 458         if (vport->port_type == LPFC_PHYSICAL_PORT) {
 459                 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 460                                  "1812 vport_delete failed: Cannot delete "
 461                                  "physical host\n");
 462                 return VPORT_ERROR;
 463         }
 464         /*
 465          * If we are not unloading the driver then prevent the vport_delete
 466          * from happening until after this vport's discovery is finished.
 467          */
 468         if (!(phba->pport->load_flag & FC_UNLOADING)) {
 469                 int check_count = 0;
 470                 while (check_count < ((phba->fc_ratov * 3) + 3) &&
 471                        vport->port_state > LPFC_VPORT_FAILED &&
 472                        vport->port_state < LPFC_VPORT_READY) {
 473                         check_count++;
 474                         msleep(1000);
 475                 }
 476                 if (vport->port_state > LPFC_VPORT_FAILED &&
 477                     vport->port_state < LPFC_VPORT_READY)
 478                         return -EAGAIN;
 479         }
 480         /*
 481          * This is a bit of a mess.  We want to ensure the shost doesn't get
 482          * torn down until we're done with the embedded lpfc_vport structure.
 483          *
 484          * Beyond holding a reference for this function, we also need a
 485          * reference for outstanding I/O requests we schedule during delete
 486          * processing.  But once we scsi_remove_host() we can no longer obtain
 487          * a reference through scsi_host_get().
 488          *
 489          * So we take two references here.  We release one reference at the
 490          * bottom of the function -- after delinking the vport.  And we
 491          * release the other at the completion of the unreg_vpi that get's
 492          * initiated after we've disposed of all other resources associated
 493          * with the port.
 494          */
 495         if (!scsi_host_get(shost) || !scsi_host_get(shost))
 496                 return VPORT_INVAL;
 497         spin_lock_irq(&phba->hbalock);
 498         vport->load_flag |= FC_UNLOADING;
 499         spin_unlock_irq(&phba->hbalock);
 500         kfree(vport->vname);
 501         lpfc_debugfs_terminate(vport);
 502         fc_remove_host(lpfc_shost_from_vport(vport));
 503         scsi_remove_host(lpfc_shost_from_vport(vport));
 504
 505         ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
 506
 507         /* In case of driver unload, we shall not perform fabric logo as the
 508          * worker thread already stopped at this stage and, in this case, we
 509          * can safely skip the fabric logo.
 510          */
 511         if (phba->pport->load_flag & FC_UNLOADING) {
 512                 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
 513                     ndlp->nlp_state == NLP_STE_UNMAPPED_NODE &&
 514                     phba->link_state >= LPFC_LINK_UP) {
 515                         /* First look for the Fabric ndlp */
 516                         ndlp = lpfc_findnode_did(vport, Fabric_DID);
 517                         if (!ndlp)
 518                                 goto skip_logo;
 519                         else if (!NLP_CHK_NODE_ACT(ndlp)) {
 520                                 ndlp = lpfc_enable_node(vport, ndlp,
 521                                                         NLP_STE_UNUSED_NODE);
 522                                 if (!ndlp)
 523                                         goto skip_logo;
 524                         }
 525                         /* Remove ndlp from vport npld list */
 526                         lpfc_dequeue_node(vport, ndlp);
 527
 528                         /* Indicate free memory when release */
 529                         spin_lock_irq(&phba->ndlp_lock);
 530                         NLP_SET_FREE_REQ(ndlp);
 531                         spin_unlock_irq(&phba->ndlp_lock);
 532                         /* Kick off release ndlp when it can be safely done */
 533                         lpfc_nlp_put(ndlp);
 534                 }
 535                 goto skip_logo;
 536         }
 537
 538         /* Otherwise, we will perform fabric logo as needed */
 539         if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
 540             ndlp->nlp_state == NLP_STE_UNMAPPED_NODE &&
 541             phba->link_state >= LPFC_LINK_UP) {
 542                 if (vport->cfg_enable_da_id) {
 543                         timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
 544                         if (!lpfc_ns_cmd(vport, SLI_CTNS_DA_ID, 0, 0))
 545                                 while (vport->ct_flags && timeout)
 546                                         timeout = schedule_timeout(timeout);
 547                         else
 548                                 lpfc_printf_log(vport->phba, KERN_WARNING,
 549                                                 LOG_VPORT,
 550                                                 "1829 CT command failed to "
 551                                                 "delete objects on fabric. \n");
 552                 }
 553                 /* First look for the Fabric ndlp */
 554                 ndlp = lpfc_findnode_did(vport, Fabric_DID);
 555                 if (!ndlp) {
 556                         /* Cannot find existing Fabric ndlp, allocate one */
 557                         ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
 558                         if (!ndlp)
 559                                 goto skip_logo;
 560                         lpfc_nlp_init(vport, ndlp, Fabric_DID);
 561                         /* Indicate free memory when release */
 562                         NLP_SET_FREE_REQ(ndlp);
 563                 } else {
 564                         if (!NLP_CHK_NODE_ACT(ndlp))
 565                                 ndlp = lpfc_enable_node(vport, ndlp,
 566                                                 NLP_STE_UNUSED_NODE);
 567                                 if (!ndlp)
 568                                         goto skip_logo;
 569
 570                         /* Remove ndlp from vport npld list */
 571                         lpfc_dequeue_node(vport, ndlp);
 572                         spin_lock_irq(&phba->ndlp_lock);
 573                         if (!NLP_CHK_FREE_REQ(ndlp))
 574                                 /* Indicate free memory when release */
 575                                 NLP_SET_FREE_REQ(ndlp);
 576                         else {
 577                                 /* Skip this if ndlp is already in free mode */
 578                                 spin_unlock_irq(&phba->ndlp_lock);
 579                                 goto skip_logo;
 580                         }
 581                         spin_unlock_irq(&phba->ndlp_lock);
 582                 }
 583                 vport->unreg_vpi_cmpl = VPORT_INVAL;
 584                 timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
 585                 if (!lpfc_issue_els_npiv_logo(vport, ndlp))
 586                         while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout)
 587                                 timeout = schedule_timeout(timeout);
 588         }
 589
 590 skip_logo:
 591         lpfc_cleanup(vport);
 592         lpfc_sli_host_down(vport);
 593
 594         lpfc_stop_vport_timers(vport);
 595
 596         if (!(phba->pport->load_flag & FC_UNLOADING)) {
 597                 lpfc_unreg_all_rpis(vport);
 598                 lpfc_unreg_default_rpis(vport);
 599                 /*
 600                  * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi)
 601                  * does the scsi_host_put() to release the vport.
 602                  */
 603                 lpfc_mbx_unreg_vpi(vport);
 604         }
 605
 606         lpfc_free_vpi(phba, vport->vpi);
 607         vport->work_port_events = 0;
 608         spin_lock_irq(&phba->hbalock);
 609         list_del_init(&vport->listentry);
 610         spin_unlock_irq(&phba->hbalock);
 611         lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 612                          "1828 Vport Deleted.\n");
 613         scsi_host_put(shost);
 614         return VPORT_OK;
 615 }
 616
 617 struct lpfc_vport **
 618 lpfc_create_vport_work_array(struct lpfc_hba *phba)
 619 {
 620         struct lpfc_vport *port_iterator;
 621         struct lpfc_vport **vports;
 622         int index = 0;
 623         vports = kzalloc((phba->max_vpi + 1) * sizeof(struct lpfc_vport *),
 624                          GFP_KERNEL);
 625         if (vports == NULL)
 626                 return NULL;
 627         spin_lock_irq(&phba->hbalock);
 628         list_for_each_entry(port_iterator, &phba->port_list, listentry) {
 629                 if (!scsi_host_get(lpfc_shost_from_vport(port_iterator))) {
 630                         lpfc_printf_vlog(port_iterator, KERN_WARNING, LOG_VPORT,
 631                                          "1801 Create vport work array FAILED: "
 632                                          "cannot do scsi_host_get\n");
 633                         continue;
 634                 }
 635                 vports[index++] = port_iterator;
 636         }
 637         spin_unlock_irq(&phba->hbalock);
 638         return vports;
 639 }
 640
 641 void
 642 lpfc_destroy_vport_work_array(struct lpfc_hba *phba, struct lpfc_vport **vports)
 643 {
 644         int i;
 645         if (vports == NULL)
 646                 return;
 647         for (i=0; vports[i] != NULL && i <= phba->max_vpi; i++)
 648                 scsi_host_put(lpfc_shost_from_vport(vports[i]));
 649         kfree(vports);
 650 }