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 }