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) 2017-2024 Broadcom. All Rights Reserved. The term *
   5  * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.     *
   6  * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
   7  * EMULEX and SLI are trademarks of Emulex.                        *
   8  * www.broadcom.com                                                *
   9  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
  10  *                                                                 *
  11  * This program is free software; you can redistribute it and/or   *
  12  * modify it under the terms of version 2 of the GNU General       *
  13  * Public License as published by the Free Software Foundation.    *
  14  * This program is distributed in the hope that it will be useful. *
  15  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  16  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  17  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  18  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  19  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  20  * more details, a copy of which can be found in the file COPYING  *
  21  * included with this package.                                     *
  22  *******************************************************************/
  23
  24 #include <linux/blkdev.h>
  25 #include <linux/delay.h>
  26 #include <linux/dma-mapping.h>
  27 #include <linux/idr.h>
  28 #include <linux/interrupt.h>
  29 #include <linux/kthread.h>
  30 #include <linux/pci.h>
  31 #include <linux/slab.h>
  32 #include <linux/spinlock.h>
  33 #include <linux/sched/signal.h>
  34
  35 #include <scsi/scsi.h>
  36 #include <scsi/scsi_device.h>
  37 #include <scsi/scsi_host.h>
  38 #include <scsi/scsi_transport_fc.h>
  39
  40 #include "lpfc_hw4.h"
  41 #include "lpfc_hw.h"
  42 #include "lpfc_sli.h"
  43 #include "lpfc_sli4.h"
  44 #include "lpfc_nl.h"
  45 #include "lpfc_disc.h"
  46 #include "lpfc_scsi.h"
  47 #include "lpfc.h"
  48 #include "lpfc_logmsg.h"
  49 #include "lpfc_crtn.h"
  50 #include "lpfc_version.h"
  51 #include "lpfc_vport.h"
  52
  53 inline void lpfc_vport_set_state(struct lpfc_vport *vport,
  54                                  enum fc_vport_state new_state)
  55 {
  56         struct fc_vport *fc_vport = vport->fc_vport;
  57
  58         if (fc_vport) {
  59                 /*
  60                  * When the transport defines fc_vport_set state we will replace
  61                  * this code with the following line
  62                  */
  63                 /* fc_vport_set_state(fc_vport, new_state); */
  64                 if (new_state != FC_VPORT_INITIALIZING)
  65                         fc_vport->vport_last_state = fc_vport->vport_state;
  66                 fc_vport->vport_state = new_state;
  67         }
  68
  69         /* for all the error states we will set the invternal state to FAILED */
  70         switch (new_state) {
  71         case FC_VPORT_NO_FABRIC_SUPP:
  72         case FC_VPORT_NO_FABRIC_RSCS:
  73         case FC_VPORT_FABRIC_LOGOUT:
  74         case FC_VPORT_FABRIC_REJ_WWN:
  75         case FC_VPORT_FAILED:
  76                 vport->port_state = LPFC_VPORT_FAILED;
  77                 break;
  78         case FC_VPORT_LINKDOWN:
  79                 vport->port_state = LPFC_VPORT_UNKNOWN;
  80                 break;
  81         default:
  82                 /* do nothing */
  83                 break;
  84         }
  85 }
  86
  87 int
  88 lpfc_alloc_vpi(struct lpfc_hba *phba)
  89 {
  90         unsigned long vpi;
  91
  92         spin_lock_irq(&phba->hbalock);
  93         /* Start at bit 1 because vpi zero is reserved for the physical port */
  94         vpi = find_next_zero_bit(phba->vpi_bmask, (phba->max_vpi + 1), 1);
  95         if (vpi > phba->max_vpi)
  96                 vpi = 0;
  97         else
  98                 set_bit(vpi, phba->vpi_bmask);
  99         if (phba->sli_rev == LPFC_SLI_REV4)
 100                 phba->sli4_hba.max_cfg_param.vpi_used++;
 101         spin_unlock_irq(&phba->hbalock);
 102         return vpi;
 103 }
 104
 105 static void
 106 lpfc_free_vpi(struct lpfc_hba *phba, int vpi)
 107 {
 108         if (vpi == 0)
 109                 return;
 110         spin_lock_irq(&phba->hbalock);
 111         clear_bit(vpi, phba->vpi_bmask);
 112         if (phba->sli_rev == LPFC_SLI_REV4)
 113                 phba->sli4_hba.max_cfg_param.vpi_used--;
 114         spin_unlock_irq(&phba->hbalock);
 115 }
 116
 117 static int
 118 lpfc_vport_sparm(struct lpfc_hba *phba, struct lpfc_vport *vport)
 119 {
 120         LPFC_MBOXQ_t *pmb;
 121         MAILBOX_t *mb;
 122         struct lpfc_dmabuf *mp;
 123         int  rc;
 124
 125         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 126         if (!pmb) {
 127                 return -ENOMEM;
 128         }
 129         mb = &pmb->u.mb;
 130
 131         rc = lpfc_read_sparam(phba, pmb, vport->vpi);
 132         if (rc) {
 133                 mempool_free(pmb, phba->mbox_mem_pool);
 134                 return -ENOMEM;
 135         }
 136
 137         /*
 138          * Wait for the read_sparams mailbox to complete.  Driver needs
 139          * this per vport to start the FDISC.  If the mailbox fails,
 140          * just cleanup and return an error unless the failure is a
 141          * mailbox timeout.  For MBX_TIMEOUT, allow the default
 142          * mbox completion handler to take care of the cleanup.  This
 143          * is safe as the mailbox command isn't one that triggers
 144          * another mailbox.
 145          */
 146         pmb->vport = vport;
 147         rc = lpfc_sli_issue_mbox_wait(phba, pmb, phba->fc_ratov * 2);
 148         if (rc != MBX_SUCCESS) {
 149                 if (signal_pending(current)) {
 150                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 151                                          "1830 Signal aborted mbxCmd x%x\n",
 152                                          mb->mbxCommand);
 153                         if (rc != MBX_TIMEOUT)
 154                                 lpfc_mbox_rsrc_cleanup(phba, pmb,
 155                                                        MBOX_THD_UNLOCKED);
 156                         return -EINTR;
 157                 } else {
 158                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 159                                          "1818 VPort failed init, mbxCmd x%x "
 160                                          "READ_SPARM mbxStatus x%x, rc = x%x\n",
 161                                          mb->mbxCommand, mb->mbxStatus, rc);
 162                         if (rc != MBX_TIMEOUT)
 163                                 lpfc_mbox_rsrc_cleanup(phba, pmb,
 164                                                        MBOX_THD_UNLOCKED);
 165                         return -EIO;
 166                 }
 167         }
 168
 169         mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
 170         memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
 171         memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
 172                sizeof (struct lpfc_name));
 173         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
 174                sizeof (struct lpfc_name));
 175         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
 176         return 0;
 177 }
 178
 179 static int
 180 lpfc_valid_wwn_format(struct lpfc_hba *phba, struct lpfc_name *wwn,
 181                       const char *name_type)
 182 {
 183                                 /* ensure that IEEE format 1 addresses
 184                                  * contain zeros in bits 59-48
 185                                  */
 186         if (!((wwn->u.wwn[0] >> 4) == 1 &&
 187               ((wwn->u.wwn[0] & 0xf) != 0 || (wwn->u.wwn[1] & 0xf) != 0)))
 188                 return 1;
 189
 190         lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
 191                         "1822 Invalid %s: %02x:%02x:%02x:%02x:"
 192                         "%02x:%02x:%02x:%02x\n",
 193                         name_type,
 194                         wwn->u.wwn[0], wwn->u.wwn[1],
 195                         wwn->u.wwn[2], wwn->u.wwn[3],
 196                         wwn->u.wwn[4], wwn->u.wwn[5],
 197                         wwn->u.wwn[6], wwn->u.wwn[7]);
 198         return 0;
 199 }
 200
 201 static int
 202 lpfc_unique_wwpn(struct lpfc_hba *phba, struct lpfc_vport *new_vport)
 203 {
 204         struct lpfc_vport *vport;
 205         unsigned long flags;
 206
 207         spin_lock_irqsave(&phba->port_list_lock, flags);
 208         list_for_each_entry(vport, &phba->port_list, listentry) {
 209                 if (vport == new_vport)
 210                         continue;
 211                 /* If they match, return not unique */
 212                 if (memcmp(&vport->fc_sparam.portName,
 213                            &new_vport->fc_sparam.portName,
 214                            sizeof(struct lpfc_name)) == 0) {
 215                         spin_unlock_irqrestore(&phba->port_list_lock, flags);
 216                         return 0;
 217                 }
 218         }
 219         spin_unlock_irqrestore(&phba->port_list_lock, flags);
 220         return 1;
 221 }
 222
 223 /**
 224  * lpfc_discovery_wait - Wait for driver discovery to quiesce
 225  * @vport: The virtual port for which this call is being executed.
 226  *
 227  * This driver calls this routine specifically from lpfc_vport_delete
 228  * to enforce a synchronous execution of vport
 229  * delete relative to discovery activities.  The
 230  * lpfc_vport_delete routine should not return until it
 231  * can reasonably guarantee that discovery has quiesced.
 232  * Post FDISC LOGO, the driver must wait until its SAN teardown is
 233  * complete and all resources recovered before allowing
 234  * cleanup.
 235  *
 236  * This routine does not require any locks held.
 237  **/
 238 static void lpfc_discovery_wait(struct lpfc_vport *vport)
 239 {
 240         struct lpfc_hba *phba = vport->phba;
 241         unsigned long wait_time_max;
 242         unsigned long start_time;
 243
 244         /*
 245          * The time constraint on this loop is a balance between the
 246          * fabric RA_TOV value and dev_loss tmo.  The driver's
 247          * devloss_tmo is 10 giving this loop a 3x multiplier minimally.
 248          */
 249         wait_time_max = msecs_to_jiffies(((phba->fc_ratov * 3) + 3) * 1000);
 250         wait_time_max += jiffies;
 251         start_time = jiffies;
 252         while (time_before(jiffies, wait_time_max)) {
 253                 if ((vport->num_disc_nodes > 0)    ||
 254                     test_bit(FC_RSCN_MODE, &vport->fc_flag) ||
 255                     test_bit(FC_RSCN_DISCOVERY, &vport->fc_flag) ||
 256                     test_bit(FC_NLP_MORE, &vport->fc_flag) ||
 257                     test_bit(FC_RSCN_DEFERRED, &vport->fc_flag) ||
 258                     test_bit(FC_NDISC_ACTIVE, &vport->fc_flag) ||
 259                     test_bit(FC_DISC_TMO, &vport->fc_flag) ||
 260                     ((vport->port_state > LPFC_VPORT_FAILED) &&
 261                      (vport->port_state < LPFC_VPORT_READY))) {
 262                         lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT,
 263                                         "1833 Vport discovery quiesce Wait: "
 264                                         "state x%x fc_flags x%lx "
 265                                         "num_nodes x%x, waiting 1000 msecs "
 266                                         "total wait msecs x%x\n",
 267                                         vport->port_state, vport->fc_flag,
 268                                         vport->num_disc_nodes,
 269                                         jiffies_to_msecs(jiffies - start_time));
 270                         msleep(1000);
 271                 } else {
 272                         /* Base case.  Wait variants satisfied.  Break out */
 273                         lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT,
 274                                          "1834 Vport discovery quiesced: "
 275                                          "state x%x fc_flags x%lx "
 276                                          "wait msecs x%x\n",
 277                                          vport->port_state, vport->fc_flag,
 278                                          jiffies_to_msecs(jiffies
 279                                                 - start_time));
 280                         break;
 281                 }
 282         }
 283
 284         if (time_after(jiffies, wait_time_max))
 285                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 286                                  "1835 Vport discovery quiesce failed:"
 287                                  " state x%x fc_flags x%lx wait msecs x%x\n",
 288                                  vport->port_state, vport->fc_flag,
 289                                  jiffies_to_msecs(jiffies - start_time));
 290 }
 291
 292 int
 293 lpfc_vport_create(struct fc_vport *fc_vport, bool disable)
 294 {
 295         struct lpfc_nodelist *ndlp;
 296         struct Scsi_Host *shost = fc_vport->shost;
 297         struct lpfc_vport *pport = (struct lpfc_vport *) shost->hostdata;
 298         struct lpfc_hba   *phba = pport->phba;
 299         struct lpfc_vport *vport = NULL;
 300         int instance;
 301         int vpi;
 302         int rc = VPORT_ERROR;
 303         int status;
 304
 305         if ((phba->sli_rev < 3) || !(phba->cfg_enable_npiv)) {
 306                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 307                                 "1808 Create VPORT failed: "
 308                                 "NPIV is not enabled: SLImode:%d\n",
 309                                 phba->sli_rev);
 310                 rc = VPORT_INVAL;
 311                 goto error_out;
 312         }
 313
 314         /* NPIV is not supported if HBA has NVME Target enabled */
 315         if (phba->nvmet_support) {
 316                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 317                                 "3189 Create VPORT failed: "
 318                                 "NPIV is not supported on NVME Target\n");
 319                 rc = VPORT_INVAL;
 320                 goto error_out;
 321         }
 322
 323         vpi = lpfc_alloc_vpi(phba);
 324         if (vpi == 0) {
 325                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 326                                 "1809 Create VPORT failed: "
 327                                 "Max VPORTs (%d) exceeded\n",
 328                                 phba->max_vpi);
 329                 rc = VPORT_NORESOURCES;
 330                 goto error_out;
 331         }
 332
 333         /* Assign an unused board number */
 334         if ((instance = lpfc_get_instance()) < 0) {
 335                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 336                                 "1810 Create VPORT failed: Cannot get "
 337                                 "instance number\n");
 338                 lpfc_free_vpi(phba, vpi);
 339                 rc = VPORT_NORESOURCES;
 340                 goto error_out;
 341         }
 342
 343         vport = lpfc_create_port(phba, instance, &fc_vport->dev);
 344         if (!vport) {
 345                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 346                                 "1811 Create VPORT failed: vpi x%x\n", vpi);
 347                 lpfc_free_vpi(phba, vpi);
 348                 rc = VPORT_NORESOURCES;
 349                 goto error_out;
 350         }
 351
 352         vport->vpi = vpi;
 353         lpfc_debugfs_initialize(vport);
 354
 355         if ((status = lpfc_vport_sparm(phba, vport))) {
 356                 if (status == -EINTR) {
 357                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 358                                          "1831 Create VPORT Interrupted.\n");
 359                         rc = VPORT_ERROR;
 360                 } else {
 361                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 362                                          "1813 Create VPORT failed. "
 363                                          "Cannot get sparam\n");
 364                         rc = VPORT_NORESOURCES;
 365                 }
 366                 lpfc_free_vpi(phba, vpi);
 367                 destroy_port(vport);
 368                 goto error_out;
 369         }
 370
 371         u64_to_wwn(fc_vport->node_name, vport->fc_nodename.u.wwn);
 372         u64_to_wwn(fc_vport->port_name, vport->fc_portname.u.wwn);
 373
 374         memcpy(&vport->fc_sparam.portName, vport->fc_portname.u.wwn, 8);
 375         memcpy(&vport->fc_sparam.nodeName, vport->fc_nodename.u.wwn, 8);
 376
 377         if (!lpfc_valid_wwn_format(phba, &vport->fc_sparam.nodeName, "WWNN") ||
 378             !lpfc_valid_wwn_format(phba, &vport->fc_sparam.portName, "WWPN")) {
 379                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 380                                  "1821 Create VPORT failed. "
 381                                  "Invalid WWN format\n");
 382                 lpfc_free_vpi(phba, vpi);
 383                 destroy_port(vport);
 384                 rc = VPORT_INVAL;
 385                 goto error_out;
 386         }
 387
 388         if (!lpfc_unique_wwpn(phba, vport)) {
 389                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 390                                  "1823 Create VPORT failed. "
 391                                  "Duplicate WWN on HBA\n");
 392                 lpfc_free_vpi(phba, vpi);
 393                 destroy_port(vport);
 394                 rc = VPORT_INVAL;
 395                 goto error_out;
 396         }
 397
 398         /* Create binary sysfs attribute for vport */
 399         lpfc_alloc_sysfs_attr(vport);
 400
 401         /* Set the DFT_LUN_Q_DEPTH accordingly */
 402         vport->cfg_lun_queue_depth  = phba->pport->cfg_lun_queue_depth;
 403
 404         /* Only the physical port can support NVME for now */
 405         vport->cfg_enable_fc4_type = LPFC_ENABLE_FCP;
 406
 407         *(struct lpfc_vport **)fc_vport->dd_data = vport;
 408         vport->fc_vport = fc_vport;
 409
 410         /* At this point we are fully registered with SCSI Layer.  */
 411         set_bit(FC_ALLOW_FDMI, &vport->load_flag);
 412         if (phba->cfg_enable_SmartSAN ||
 413             (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) {
 414                 /* Setup appropriate attribute masks */
 415                 vport->fdmi_hba_mask = phba->pport->fdmi_hba_mask;
 416                 vport->fdmi_port_mask = phba->pport->fdmi_port_mask;
 417         }
 418
 419         /*
 420          * In SLI4, the vpi must be activated before it can be used
 421          * by the port.
 422          */
 423         if ((phba->sli_rev == LPFC_SLI_REV4) &&
 424             test_bit(FC_VFI_REGISTERED, &pport->fc_flag)) {
 425                 rc = lpfc_sli4_init_vpi(vport);
 426                 if (rc) {
 427                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 428                                         "1838 Failed to INIT_VPI on vpi %d "
 429                                         "status %d\n", vpi, rc);
 430                         rc = VPORT_NORESOURCES;
 431                         lpfc_free_vpi(phba, vpi);
 432                         goto error_out;
 433                 }
 434         } else if (phba->sli_rev == LPFC_SLI_REV4) {
 435                 /*
 436                  * Driver cannot INIT_VPI now. Set the flags to
 437                  * init_vpi when reg_vfi complete.
 438                  */
 439                 set_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag);
 440                 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
 441                 rc = VPORT_OK;
 442                 goto out;
 443         }
 444
 445         if ((phba->link_state < LPFC_LINK_UP) ||
 446             (pport->port_state < LPFC_FABRIC_CFG_LINK) ||
 447             (phba->fc_topology == LPFC_TOPOLOGY_LOOP)) {
 448                 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
 449                 rc = VPORT_OK;
 450                 goto out;
 451         }
 452
 453         if (disable) {
 454                 lpfc_vport_set_state(vport, FC_VPORT_DISABLED);
 455                 rc = VPORT_OK;
 456                 goto out;
 457         }
 458
 459         /* Use the Physical nodes Fabric NDLP to determine if the link is
 460          * up and ready to FDISC.
 461          */
 462         ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
 463         if (ndlp &&
 464             ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
 465                 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
 466                         lpfc_set_disctmo(vport);
 467                         lpfc_initial_fdisc(vport);
 468                 } else {
 469                         lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
 470                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 471                                          "0262 No NPIV Fabric support\n");
 472                 }
 473         } else {
 474                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
 475         }
 476         rc = VPORT_OK;
 477
 478 out:
 479         lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 480                          "1825 Vport Created.\n");
 481         lpfc_host_attrib_init(lpfc_shost_from_vport(vport));
 482 error_out:
 483         return rc;
 484 }
 485
 486 static int
 487 lpfc_send_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 488 {
 489         int rc;
 490         struct lpfc_hba *phba = vport->phba;
 491
 492         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq);
 493
 494         spin_lock_irq(&ndlp->lock);
 495         if (!(ndlp->save_flags & NLP_WAIT_FOR_LOGO) &&
 496             !ndlp->logo_waitq) {
 497                 ndlp->logo_waitq = &waitq;
 498                 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 499                 ndlp->nlp_flag |= NLP_ISSUE_LOGO;
 500                 ndlp->save_flags |= NLP_WAIT_FOR_LOGO;
 501         }
 502         spin_unlock_irq(&ndlp->lock);
 503         rc = lpfc_issue_els_npiv_logo(vport, ndlp);
 504         if (!rc) {
 505                 wait_event_timeout(waitq,
 506                                    (!(ndlp->save_flags & NLP_WAIT_FOR_LOGO)),
 507                                    msecs_to_jiffies(phba->fc_ratov * 2000));
 508
 509                 if (!(ndlp->save_flags & NLP_WAIT_FOR_LOGO))
 510                         goto logo_cmpl;
 511                 /* LOGO wait failed.  Correct status. */
 512                 rc = -EINTR;
 513         } else {
 514                 rc = -EIO;
 515         }
 516
 517         /* Error - clean up node flags. */
 518         spin_lock_irq(&ndlp->lock);
 519         ndlp->nlp_flag &= ~NLP_ISSUE_LOGO;
 520         ndlp->save_flags &= ~NLP_WAIT_FOR_LOGO;
 521         spin_unlock_irq(&ndlp->lock);
 522
 523  logo_cmpl:
 524         lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT,
 525                          "1824 Issue LOGO completes with status %d\n",
 526                          rc);
 527         spin_lock_irq(&ndlp->lock);
 528         ndlp->logo_waitq = NULL;
 529         spin_unlock_irq(&ndlp->lock);
 530         return rc;
 531 }
 532
 533 static int
 534 disable_vport(struct fc_vport *fc_vport)
 535 {
 536         struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
 537         struct lpfc_hba   *phba = vport->phba;
 538         struct lpfc_nodelist *ndlp = NULL;
 539
 540         /* Can't disable during an outstanding delete. */
 541         if (test_bit(FC_UNLOADING, &vport->load_flag))
 542                 return 0;
 543
 544         ndlp = lpfc_findnode_did(vport, Fabric_DID);
 545         if (ndlp && phba->link_state >= LPFC_LINK_UP)
 546                 (void)lpfc_send_npiv_logo(vport, ndlp);
 547
 548         lpfc_sli_host_down(vport);
 549         lpfc_cleanup_rpis(vport, 0);
 550
 551         lpfc_stop_vport_timers(vport);
 552         lpfc_unreg_all_rpis(vport);
 553         lpfc_unreg_default_rpis(vport);
 554         /*
 555          * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi) does the
 556          * scsi_host_put() to release the vport.
 557          */
 558         lpfc_mbx_unreg_vpi(vport);
 559         if (phba->sli_rev == LPFC_SLI_REV4)
 560                 set_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag);
 561
 562         lpfc_vport_set_state(vport, FC_VPORT_DISABLED);
 563         lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 564                          "1826 Vport Disabled.\n");
 565         return VPORT_OK;
 566 }
 567
 568 static int
 569 enable_vport(struct fc_vport *fc_vport)
 570 {
 571         struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
 572         struct lpfc_hba   *phba = vport->phba;
 573         struct lpfc_nodelist *ndlp = NULL;
 574
 575         if ((phba->link_state < LPFC_LINK_UP) ||
 576             (phba->fc_topology == LPFC_TOPOLOGY_LOOP)) {
 577                 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
 578                 return VPORT_OK;
 579         }
 580
 581         set_bit(FC_LOADING, &vport->load_flag);
 582         if (test_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag)) {
 583                 lpfc_issue_init_vpi(vport);
 584                 goto out;
 585         }
 586
 587         set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
 588
 589         /* Use the Physical nodes Fabric NDLP to determine if the link is
 590          * up and ready to FDISC.
 591          */
 592         ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
 593         if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
 594                 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
 595                         lpfc_set_disctmo(vport);
 596                         lpfc_initial_fdisc(vport);
 597                 } else {
 598                         lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
 599                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 600                                          "0264 No NPIV Fabric support\n");
 601                 }
 602         } else {
 603                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
 604         }
 605
 606 out:
 607         lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 608                          "1827 Vport Enabled.\n");
 609         return VPORT_OK;
 610 }
 611
 612 int
 613 lpfc_vport_disable(struct fc_vport *fc_vport, bool disable)
 614 {
 615         if (disable)
 616                 return disable_vport(fc_vport);
 617         else
 618                 return enable_vport(fc_vport);
 619 }
 620
 621 int
 622 lpfc_vport_delete(struct fc_vport *fc_vport)
 623 {
 624         struct lpfc_nodelist *ndlp = NULL;
 625         struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
 626         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 627         struct lpfc_hba  *phba = vport->phba;
 628         int rc;
 629
 630         if (vport->port_type == LPFC_PHYSICAL_PORT) {
 631                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 632                                  "1812 vport_delete failed: Cannot delete "
 633                                  "physical host\n");
 634                 return VPORT_ERROR;
 635         }
 636
 637         /* If the vport is a static vport fail the deletion. */
 638         if ((vport->vport_flag & STATIC_VPORT) &&
 639                 !test_bit(FC_UNLOADING, &phba->pport->load_flag)) {
 640                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 641                                  "1837 vport_delete failed: Cannot delete "
 642                                  "static vport.\n");
 643                 return VPORT_ERROR;
 644         }
 645
 646         set_bit(FC_UNLOADING, &vport->load_flag);
 647
 648         /*
 649          * If we are not unloading the driver then prevent the vport_delete
 650          * from happening until after this vport's discovery is finished.
 651          */
 652         if (!test_bit(FC_UNLOADING, &phba->pport->load_flag)) {
 653                 int check_count = 0;
 654                 while (check_count < ((phba->fc_ratov * 3) + 3) &&
 655                        vport->port_state > LPFC_VPORT_FAILED &&
 656                        vport->port_state < LPFC_VPORT_READY) {
 657                         check_count++;
 658                         msleep(1000);
 659                 }
 660                 if (vport->port_state > LPFC_VPORT_FAILED &&
 661                     vport->port_state < LPFC_VPORT_READY)
 662                         return -EAGAIN;
 663         }
 664
 665         /*
 666          * Take early refcount for outstanding I/O requests we schedule during
 667          * delete processing for unreg_vpi.  Always keep this before
 668          * scsi_remove_host() as we can no longer obtain a reference through
 669          * scsi_host_get() after scsi_host_remove as shost is set to SHOST_DEL.
 670          */
 671         if (!scsi_host_get(shost))
 672                 return VPORT_INVAL;
 673
 674         lpfc_free_sysfs_attr(vport);
 675         lpfc_debugfs_terminate(vport);
 676
 677         /* Remove FC host to break driver binding. */
 678         fc_remove_host(shost);
 679         scsi_remove_host(shost);
 680
 681         /* Send the DA_ID and Fabric LOGO to cleanup Nameserver entries. */
 682         ndlp = lpfc_findnode_did(vport, Fabric_DID);
 683         if (!ndlp)
 684                 goto skip_logo;
 685
 686         if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE &&
 687             phba->link_state >= LPFC_LINK_UP &&
 688             phba->fc_topology != LPFC_TOPOLOGY_LOOP) {
 689                 if (vport->cfg_enable_da_id) {
 690                         /* Send DA_ID and wait for a completion. */
 691                         rc = lpfc_ns_cmd(vport, SLI_CTNS_DA_ID, 0, 0);
 692                         if (rc) {
 693                                 lpfc_printf_log(vport->phba, KERN_WARNING,
 694                                                 LOG_VPORT,
 695                                                 "1829 CT command failed to "
 696                                                 "delete objects on fabric, "
 697                                                 "rc %d\n", rc);
 698                         }
 699                 }
 700
 701                 /*
 702                  * If the vpi is not registered, then a valid FDISC doesn't
 703                  * exist and there is no need for a ELS LOGO.  Just cleanup
 704                  * the ndlp.
 705                  */
 706                 if (!(vport->vpi_state & LPFC_VPI_REGISTERED))
 707                         goto skip_logo;
 708
 709                 /* Issue a Fabric LOGO to cleanup fabric resources. */
 710                 ndlp = lpfc_findnode_did(vport, Fabric_DID);
 711                 if (!ndlp)
 712                         goto skip_logo;
 713
 714                 rc = lpfc_send_npiv_logo(vport, ndlp);
 715                 if (rc)
 716                         goto skip_logo;
 717         }
 718
 719         if (!test_bit(FC_UNLOADING, &phba->pport->load_flag))
 720                 lpfc_discovery_wait(vport);
 721
 722 skip_logo:
 723
 724         lpfc_cleanup(vport);
 725
 726         /* Remove scsi host now.  The nodes are cleaned up. */
 727         lpfc_sli_host_down(vport);
 728         lpfc_stop_vport_timers(vport);
 729
 730         if (!test_bit(FC_UNLOADING, &phba->pport->load_flag)) {
 731                 lpfc_unreg_all_rpis(vport);
 732                 lpfc_unreg_default_rpis(vport);
 733                 /*
 734                  * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi)
 735                  * does the scsi_host_put() to release the vport.
 736                  */
 737                 if (!(vport->vpi_state & LPFC_VPI_REGISTERED) ||
 738                                 lpfc_mbx_unreg_vpi(vport))
 739                         scsi_host_put(shost);
 740         } else {
 741                 scsi_host_put(shost);
 742         }
 743
 744         lpfc_free_vpi(phba, vport->vpi);
 745         vport->work_port_events = 0;
 746         spin_lock_irq(&phba->port_list_lock);
 747         list_del_init(&vport->listentry);
 748         spin_unlock_irq(&phba->port_list_lock);
 749         lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
 750                          "1828 Vport Deleted.\n");
 751         scsi_host_put(shost);
 752         return VPORT_OK;
 753 }
 754
 755 struct lpfc_vport **
 756 lpfc_create_vport_work_array(struct lpfc_hba *phba)
 757 {
 758         struct lpfc_vport *port_iterator;
 759         struct lpfc_vport **vports;
 760         int index = 0;
 761         vports = kcalloc(phba->max_vports + 1, sizeof(struct lpfc_vport *),
 762                          GFP_KERNEL);
 763         if (vports == NULL)
 764                 return NULL;
 765         spin_lock_irq(&phba->port_list_lock);
 766         list_for_each_entry(port_iterator, &phba->port_list, listentry) {
 767                 if (test_bit(FC_UNLOADING, &port_iterator->load_flag))
 768                         continue;
 769                 if (!scsi_host_get(lpfc_shost_from_vport(port_iterator))) {
 770                         lpfc_printf_vlog(port_iterator, KERN_ERR,
 771                                          LOG_TRACE_EVENT,
 772                                          "1801 Create vport work array FAILED: "
 773                                          "cannot do scsi_host_get\n");
 774                         continue;
 775                 }
 776                 vports[index++] = port_iterator;
 777         }
 778         spin_unlock_irq(&phba->port_list_lock);
 779         return vports;
 780 }
 781
 782 void
 783 lpfc_destroy_vport_work_array(struct lpfc_hba *phba, struct lpfc_vport **vports)
 784 {
 785         int i;
 786         if (vports == NULL)
 787                 return;
 788         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
 789                 scsi_host_put(lpfc_shost_from_vport(vports[i]));
 790         kfree(vports);
 791 }
 792