drivers/scsi/lpfc/lpfc_hbadisc.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/slab.h>
  27 #include <linux/pci.h>
  28 #include <linux/kthread.h>
  29 #include <linux/interrupt.h>
  30 #include <linux/lockdep.h>
  31 #include <linux/utsname.h>
  32
  33 #include <scsi/scsi.h>
  34 #include <scsi/scsi_device.h>
  35 #include <scsi/scsi_host.h>
  36 #include <scsi/scsi_transport_fc.h>
  37 #include <scsi/fc/fc_fs.h>
  38
  39 #include "lpfc_hw4.h"
  40 #include "lpfc_hw.h"
  41 #include "lpfc_nl.h"
  42 #include "lpfc_disc.h"
  43 #include "lpfc_sli.h"
  44 #include "lpfc_sli4.h"
  45 #include "lpfc.h"
  46 #include "lpfc_scsi.h"
  47 #include "lpfc_nvme.h"
  48 #include "lpfc_logmsg.h"
  49 #include "lpfc_crtn.h"
  50 #include "lpfc_vport.h"
  51 #include "lpfc_debugfs.h"
  52
  53 /* AlpaArray for assignment of scsid for scan-down and bind_method */
  54 static uint8_t lpfcAlpaArray[] = {
  55         0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
  56         0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
  57         0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
  58         0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
  59         0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
  60         0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
  61         0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
  62         0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
  63         0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
  64         0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
  65         0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
  66         0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
  67         0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
  68 };
  69
  70 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
  71 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
  72 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
  73 static int lpfc_fcf_inuse(struct lpfc_hba *);
  74 static void lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *, LPFC_MBOXQ_t *);
  75 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba);
  76 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba);
  77
  78 static int
  79 lpfc_valid_xpt_node(struct lpfc_nodelist *ndlp)
  80 {
  81         if (ndlp->nlp_fc4_type ||
  82             ndlp->nlp_type & NLP_FABRIC)
  83                 return 1;
  84         return 0;
  85 }
  86 /* The source of a terminate rport I/O is either a dev_loss_tmo
  87  * event or a call to fc_remove_host.  While the rport should be
  88  * valid during these downcalls, the transport can call twice
  89  * in a single event.  This routine provides somoe protection
  90  * as the NDLP isn't really free, just released to the pool.
  91  */
  92 static int
  93 lpfc_rport_invalid(struct fc_rport *rport)
  94 {
  95         struct lpfc_rport_data *rdata;
  96         struct lpfc_nodelist *ndlp;
  97
  98         if (!rport) {
  99                 pr_err("**** %s: NULL rport, exit.\n", __func__);
 100                 return -EINVAL;
 101         }
 102
 103         if (rport->flags & FC_RPORT_DEVLOSS_CALLBK_DONE) {
 104                 pr_info("**** %s: devloss_callbk_done rport x%px SID x%x\n",
 105                         __func__, rport, rport->scsi_target_id);
 106                 return -EINVAL;
 107         }
 108
 109         rdata = rport->dd_data;
 110         if (!rdata) {
 111                 pr_err("**** %s: NULL dd_data on rport x%px SID x%x\n",
 112                        __func__, rport, rport->scsi_target_id);
 113                 return -EINVAL;
 114         }
 115
 116         ndlp = rdata->pnode;
 117         if (!rdata->pnode) {
 118                 pr_info("**** %s: NULL ndlp on rport x%px SID x%x\n",
 119                         __func__, rport, rport->scsi_target_id);
 120                 return -EINVAL;
 121         }
 122
 123         if (!ndlp->vport) {
 124                 pr_err("**** %s: Null vport on ndlp x%px, DID x%x rport x%px "
 125                        "SID x%x\n", __func__, ndlp, ndlp->nlp_DID, rport,
 126                        rport->scsi_target_id);
 127                 return -EINVAL;
 128         }
 129         return 0;
 130 }
 131
 132 void
 133 lpfc_terminate_rport_io(struct fc_rport *rport)
 134 {
 135         struct lpfc_rport_data *rdata;
 136         struct lpfc_nodelist *ndlp;
 137         struct lpfc_vport *vport;
 138
 139         if (lpfc_rport_invalid(rport))
 140                 return;
 141
 142         rdata = rport->dd_data;
 143         ndlp = rdata->pnode;
 144         vport = ndlp->vport;
 145         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 146                               "rport terminate: sid:x%x did:x%x flg:x%lx",
 147                               ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 148
 149         if (ndlp->nlp_sid != NLP_NO_SID)
 150                 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 151 }
 152
 153 /*
 154  * This function will be called when dev_loss_tmo fire.
 155  */
 156 void
 157 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
 158 {
 159         struct lpfc_nodelist *ndlp;
 160         struct lpfc_vport *vport;
 161         struct lpfc_hba   *phba;
 162         struct lpfc_work_evt *evtp;
 163         unsigned long iflags;
 164         bool nvme_reg = false;
 165
 166         ndlp = ((struct lpfc_rport_data *)rport->dd_data)->pnode;
 167         if (!ndlp)
 168                 return;
 169
 170         vport = ndlp->vport;
 171         phba  = vport->phba;
 172
 173         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 174                 "rport devlosscb: sid:x%x did:x%x flg:x%lx",
 175                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 176
 177         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 178                          "3181 dev_loss_callbk x%06x, rport x%px flg x%lx "
 179                          "load_flag x%lx refcnt %u state %d xpt x%x\n",
 180                          ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag,
 181                          vport->load_flag, kref_read(&ndlp->kref),
 182                          ndlp->nlp_state, ndlp->fc4_xpt_flags);
 183
 184         /* Don't schedule a worker thread event if the vport is going down. */
 185         if (test_bit(FC_UNLOADING, &vport->load_flag) ||
 186             !test_bit(HBA_SETUP, &phba->hba_flag)) {
 187
 188                 spin_lock_irqsave(&ndlp->lock, iflags);
 189                 ndlp->rport = NULL;
 190
 191                 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD)
 192                         nvme_reg = true;
 193
 194                 /* The scsi_transport is done with the rport so lpfc cannot
 195                  * call to unregister.
 196                  */
 197                 if (ndlp->fc4_xpt_flags & SCSI_XPT_REGD) {
 198                         ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD;
 199
 200                         /* If NLP_XPT_REGD was cleared in lpfc_nlp_unreg_node,
 201                          * unregister calls were made to the scsi and nvme
 202                          * transports and refcnt was already decremented. Clear
 203                          * the NLP_XPT_REGD flag only if the NVME Rport is
 204                          * confirmed unregistered.
 205                          */
 206                         if (!nvme_reg && ndlp->fc4_xpt_flags & NLP_XPT_REGD) {
 207                                 ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD;
 208                                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 209                                 lpfc_nlp_put(ndlp); /* may free ndlp */
 210                         } else {
 211                                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 212                         }
 213                 } else {
 214                         spin_unlock_irqrestore(&ndlp->lock, iflags);
 215                 }
 216
 217                 /* Only 1 thread can drop the initial node reference.  If
 218                  * another thread has set NLP_DROPPED, this thread is done.
 219                  */
 220                 if (nvme_reg || test_bit(NLP_DROPPED, &ndlp->nlp_flag))
 221                         return;
 222
 223                 set_bit(NLP_DROPPED, &ndlp->nlp_flag);
 224                 lpfc_nlp_put(ndlp);
 225                 return;
 226         }
 227
 228         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 229                 return;
 230
 231         /* check for recovered fabric node */
 232         if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE &&
 233             ndlp->nlp_DID == Fabric_DID)
 234                 return;
 235
 236         if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn))
 237                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 238                                  "6789 rport name %llx != node port name %llx",
 239                                  rport->port_name,
 240                                  wwn_to_u64(ndlp->nlp_portname.u.wwn));
 241
 242         evtp = &ndlp->dev_loss_evt;
 243
 244         if (!list_empty(&evtp->evt_listp)) {
 245                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 246                                  "6790 rport name %llx dev_loss_evt pending\n",
 247                                  rport->port_name);
 248                 return;
 249         }
 250
 251         set_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag);
 252
 253         spin_lock_irqsave(&ndlp->lock, iflags);
 254         /* If there is a PLOGI in progress, and we are in a
 255          * NLP_NPR_2B_DISC state, don't turn off the flag.
 256          */
 257         if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE)
 258                 clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
 259
 260         /*
 261          * The backend does not expect any more calls associated with this
 262          * rport. Remove the association between rport and ndlp.
 263          */
 264         ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD;
 265         ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL;
 266         ndlp->rport = NULL;
 267         spin_unlock_irqrestore(&ndlp->lock, iflags);
 268
 269         if (phba->worker_thread) {
 270                 /* We need to hold the node by incrementing the reference
 271                  * count until this queued work is done
 272                  */
 273                 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
 274
 275                 spin_lock_irqsave(&phba->hbalock, iflags);
 276                 if (evtp->evt_arg1) {
 277                         evtp->evt = LPFC_EVT_DEV_LOSS;
 278                         list_add_tail(&evtp->evt_listp, &phba->work_list);
 279                         spin_unlock_irqrestore(&phba->hbalock, iflags);
 280                         lpfc_worker_wake_up(phba);
 281                         return;
 282                 }
 283                 spin_unlock_irqrestore(&phba->hbalock, iflags);
 284         } else {
 285                 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 286                                  "3188 worker thread is stopped %s x%06x, "
 287                                  " rport x%px flg x%lx load_flag x%lx refcnt "
 288                                  "%d\n", __func__, ndlp->nlp_DID,
 289                                  ndlp->rport, ndlp->nlp_flag,
 290                                  vport->load_flag, kref_read(&ndlp->kref));
 291                 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) {
 292                         /* Node is in dev loss.  No further transaction. */
 293                         clear_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag);
 294                         lpfc_disc_state_machine(vport, ndlp, NULL,
 295                                                 NLP_EVT_DEVICE_RM);
 296                 }
 297         }
 298 }
 299
 300 /**
 301  * lpfc_check_inactive_vmid_one - VMID inactivity checker for a vport
 302  * @vport: Pointer to vport context object.
 303  *
 304  * This function checks for idle VMID entries related to a particular vport. If
 305  * found unused/idle, free them accordingly.
 306  **/
 307 static void lpfc_check_inactive_vmid_one(struct lpfc_vport *vport)
 308 {
 309         u16 keep;
 310         u32 difftime = 0, r, bucket;
 311         u64 *lta;
 312         int cpu;
 313         struct lpfc_vmid *vmp;
 314
 315         write_lock(&vport->vmid_lock);
 316
 317         if (!vport->cur_vmid_cnt)
 318                 goto out;
 319
 320         /* iterate through the table */
 321         hash_for_each(vport->hash_table, bucket, vmp, hnode) {
 322                 keep = 0;
 323                 if (vmp->flag & LPFC_VMID_REGISTERED) {
 324                         /* check if the particular VMID is in use */
 325                         /* for all available per cpu variable */
 326                         for_each_possible_cpu(cpu) {
 327                                 /* if last access time is less than timeout */
 328                                 lta = per_cpu_ptr(vmp->last_io_time, cpu);
 329                                 if (!lta)
 330                                         continue;
 331                                 difftime = (jiffies) - (*lta);
 332                                 if ((vport->vmid_inactivity_timeout *
 333                                      JIFFIES_PER_HR) > difftime) {
 334                                         keep = 1;
 335                                         break;
 336                                 }
 337                         }
 338
 339                         /* if none of the cpus have been used by the vm, */
 340                         /*  remove the entry if already registered */
 341                         if (!keep) {
 342                                 /* mark the entry for deregistration */
 343                                 vmp->flag = LPFC_VMID_DE_REGISTER;
 344                                 write_unlock(&vport->vmid_lock);
 345                                 if (vport->vmid_priority_tagging)
 346                                         r = lpfc_vmid_uvem(vport, vmp, false);
 347                                 else
 348                                         r = lpfc_vmid_cmd(vport,
 349                                                           SLI_CTAS_DAPP_IDENT,
 350                                                           vmp);
 351
 352                                 /* decrement number of active vms and mark */
 353                                 /* entry in slot as free */
 354                                 write_lock(&vport->vmid_lock);
 355                                 if (!r) {
 356                                         struct lpfc_vmid *ht = vmp;
 357
 358                                         vport->cur_vmid_cnt--;
 359                                         ht->flag = LPFC_VMID_SLOT_FREE;
 360                                         free_percpu(ht->last_io_time);
 361                                         ht->last_io_time = NULL;
 362                                         hash_del(&ht->hnode);
 363                                 }
 364                         }
 365                 }
 366         }
 367  out:
 368         write_unlock(&vport->vmid_lock);
 369 }
 370
 371 /**
 372  * lpfc_check_inactive_vmid - VMID inactivity checker
 373  * @phba: Pointer to hba context object.
 374  *
 375  * This function is called from the worker thread to determine if an entry in
 376  * the VMID table can be released since there was no I/O activity seen from that
 377  * particular VM for the specified time. When this happens, the entry in the
 378  * table is released and also the resources on the switch cleared.
 379  **/
 380
 381 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba)
 382 {
 383         struct lpfc_vport *vport;
 384         struct lpfc_vport **vports;
 385         int i;
 386
 387         vports = lpfc_create_vport_work_array(phba);
 388         if (!vports)
 389                 return;
 390
 391         for (i = 0; i <= phba->max_vports; i++) {
 392                 if ((!vports[i]) && (i == 0))
 393                         vport = phba->pport;
 394                 else
 395                         vport = vports[i];
 396                 if (!vport)
 397                         break;
 398
 399                 lpfc_check_inactive_vmid_one(vport);
 400         }
 401         lpfc_destroy_vport_work_array(phba, vports);
 402 }
 403
 404 /**
 405  * lpfc_check_nlp_post_devloss - Check to restore ndlp refcnt after devloss
 406  * @vport: Pointer to vport object.
 407  * @ndlp: Pointer to remote node object.
 408  *
 409  * If NLP_IN_RECOV_POST_DEV_LOSS flag was set due to outstanding recovery of
 410  * node during dev_loss_tmo processing, then this function restores the nlp_put
 411  * kref decrement from lpfc_dev_loss_tmo_handler.
 412  **/
 413 void
 414 lpfc_check_nlp_post_devloss(struct lpfc_vport *vport,
 415                             struct lpfc_nodelist *ndlp)
 416 {
 417         unsigned long iflags;
 418
 419         spin_lock_irqsave(&ndlp->lock, iflags);
 420         if (ndlp->save_flags & NLP_IN_RECOV_POST_DEV_LOSS) {
 421                 ndlp->save_flags &= ~NLP_IN_RECOV_POST_DEV_LOSS;
 422                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 423                 lpfc_nlp_get(ndlp);
 424                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY | LOG_NODE,
 425                                  "8438 Devloss timeout reversed on DID x%x "
 426                                  "refcnt %d ndlp %p flag x%lx "
 427                                  "port_state = x%x\n",
 428                                  ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp,
 429                                  ndlp->nlp_flag, vport->port_state);
 430                 return;
 431         }
 432         spin_unlock_irqrestore(&ndlp->lock, iflags);
 433 }
 434
 435 /**
 436  * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler
 437  * @ndlp: Pointer to remote node object.
 438  *
 439  * This function is called from the worker thread when devloss timeout timer
 440  * expires. For SLI4 host, this routine shall return 1 when at lease one
 441  * remote node, including this @ndlp, is still in use of FCF; otherwise, this
 442  * routine shall return 0 when there is no remote node is still in use of FCF
 443  * when devloss timeout happened to this @ndlp.
 444  **/
 445 static int
 446 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 447 {
 448         struct lpfc_vport *vport;
 449         struct lpfc_hba   *phba;
 450         uint8_t *name;
 451         int warn_on = 0;
 452         int fcf_inuse = 0;
 453         bool recovering = false;
 454         struct fc_vport *fc_vport = NULL;
 455         unsigned long iflags;
 456
 457         vport = ndlp->vport;
 458         name = (uint8_t *)&ndlp->nlp_portname;
 459         phba = vport->phba;
 460
 461         if (phba->sli_rev == LPFC_SLI_REV4)
 462                 fcf_inuse = lpfc_fcf_inuse(phba);
 463
 464         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 465                               "rport devlosstmo:did:x%x type:x%x id:x%x",
 466                               ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_sid);
 467
 468         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 469                          "3182 %s x%06x, nflag x%lx xflags x%x refcnt %d\n",
 470                          __func__, ndlp->nlp_DID, ndlp->nlp_flag,
 471                          ndlp->fc4_xpt_flags, kref_read(&ndlp->kref));
 472
 473         /* If the driver is recovering the rport, ignore devloss. */
 474         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
 475                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 476                                  "0284 Devloss timeout Ignored on "
 477                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 478                                  "NPort x%x\n",
 479                                  *name, *(name+1), *(name+2), *(name+3),
 480                                  *(name+4), *(name+5), *(name+6), *(name+7),
 481                                  ndlp->nlp_DID);
 482
 483                 clear_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag);
 484                 return fcf_inuse;
 485         }
 486
 487         /* Fabric nodes are done. */
 488         if (ndlp->nlp_type & NLP_FABRIC) {
 489                 spin_lock_irqsave(&ndlp->lock, iflags);
 490
 491                 /* The driver has to account for a race between any fabric
 492                  * node that's in recovery when dev_loss_tmo expires. When this
 493                  * happens, the driver has to allow node recovery.
 494                  */
 495                 switch (ndlp->nlp_DID) {
 496                 case Fabric_DID:
 497                         fc_vport = vport->fc_vport;
 498                         if (fc_vport) {
 499                                 /* NPIV path. */
 500                                 if (fc_vport->vport_state ==
 501                                     FC_VPORT_INITIALIZING)
 502                                         recovering = true;
 503                         } else {
 504                                 /* Physical port path. */
 505                                 if (test_bit(HBA_FLOGI_OUTSTANDING,
 506                                              &phba->hba_flag))
 507                                         recovering = true;
 508                         }
 509                         break;
 510                 case Fabric_Cntl_DID:
 511                         if (test_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag))
 512                                 recovering = true;
 513                         break;
 514                 case FDMI_DID:
 515                         fallthrough;
 516                 case NameServer_DID:
 517                         if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
 518                             ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE)
 519                                 recovering = true;
 520                         break;
 521                 default:
 522                         /* Ensure the nlp_DID at least has the correct prefix.
 523                          * The fabric domain controller's last three nibbles
 524                          * vary so we handle it in the default case.
 525                          */
 526                         if (ndlp->nlp_DID & Fabric_DID_MASK) {
 527                                 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
 528                                     ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE)
 529                                         recovering = true;
 530                         }
 531                         break;
 532                 }
 533                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 534
 535                 /* Mark an NLP_IN_RECOV_POST_DEV_LOSS flag to know if reversing
 536                  * the following lpfc_nlp_put is necessary after fabric node is
 537                  * recovered.
 538                  */
 539                 clear_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag);
 540                 if (recovering) {
 541                         lpfc_printf_vlog(vport, KERN_INFO,
 542                                          LOG_DISCOVERY | LOG_NODE,
 543                                          "8436 Devloss timeout marked on "
 544                                          "DID x%x refcnt %d ndlp %p "
 545                                          "flag x%lx port_state = x%x\n",
 546                                          ndlp->nlp_DID, kref_read(&ndlp->kref),
 547                                          ndlp, ndlp->nlp_flag,
 548                                          vport->port_state);
 549                         spin_lock_irqsave(&ndlp->lock, iflags);
 550                         ndlp->save_flags |= NLP_IN_RECOV_POST_DEV_LOSS;
 551                         spin_unlock_irqrestore(&ndlp->lock, iflags);
 552                         return fcf_inuse;
 553                 } else if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
 554                         /* Fabric node fully recovered before this dev_loss_tmo
 555                          * queue work is processed.  Thus, ignore the
 556                          * dev_loss_tmo event.
 557                          */
 558                         lpfc_printf_vlog(vport, KERN_INFO,
 559                                          LOG_DISCOVERY | LOG_NODE,
 560                                          "8437 Devloss timeout ignored on "
 561                                          "DID x%x refcnt %d ndlp %p "
 562                                          "flag x%lx port_state = x%x\n",
 563                                          ndlp->nlp_DID, kref_read(&ndlp->kref),
 564                                          ndlp, ndlp->nlp_flag,
 565                                          vport->port_state);
 566                         return fcf_inuse;
 567                 }
 568
 569                 lpfc_nlp_put(ndlp);
 570                 return fcf_inuse;
 571         }
 572
 573         if (ndlp->nlp_sid != NLP_NO_SID) {
 574                 warn_on = 1;
 575                 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 576         }
 577
 578         if (warn_on) {
 579                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 580                                  "0203 Devloss timeout on "
 581                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 582                                  "NPort x%06x Data: x%lx x%x x%x refcnt %d\n",
 583                                  *name, *(name+1), *(name+2), *(name+3),
 584                                  *(name+4), *(name+5), *(name+6), *(name+7),
 585                                  ndlp->nlp_DID, ndlp->nlp_flag,
 586                                  ndlp->nlp_state, ndlp->nlp_rpi,
 587                                  kref_read(&ndlp->kref));
 588         } else {
 589                 lpfc_printf_vlog(vport, KERN_INFO, LOG_TRACE_EVENT,
 590                                  "0204 Devloss timeout on "
 591                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 592                                  "NPort x%06x Data: x%lx x%x x%x\n",
 593                                  *name, *(name+1), *(name+2), *(name+3),
 594                                  *(name+4), *(name+5), *(name+6), *(name+7),
 595                                  ndlp->nlp_DID, ndlp->nlp_flag,
 596                                  ndlp->nlp_state, ndlp->nlp_rpi);
 597         }
 598         clear_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag);
 599
 600         /* If we are devloss, but we are in the process of rediscovering the
 601          * ndlp, don't issue a NLP_EVT_DEVICE_RM event.
 602          */
 603         if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
 604             ndlp->nlp_state <= NLP_STE_PRLI_ISSUE) {
 605                 return fcf_inuse;
 606         }
 607
 608         if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD))
 609                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 610
 611         return fcf_inuse;
 612 }
 613
 614 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba)
 615 {
 616         struct lpfc_vport *vport;
 617         struct lpfc_vport **vports;
 618         int i;
 619
 620         vports = lpfc_create_vport_work_array(phba);
 621         if (!vports)
 622                 return;
 623
 624         for (i = 0; i <= phba->max_vports; i++) {
 625                 if ((!vports[i]) && (i == 0))
 626                         vport = phba->pport;
 627                 else
 628                         vport = vports[i];
 629                 if (!vport)
 630                         break;
 631
 632                 if (vport->vmid_flag & LPFC_VMID_ISSUE_QFPA) {
 633                         if (!lpfc_issue_els_qfpa(vport))
 634                                 vport->vmid_flag &= ~LPFC_VMID_ISSUE_QFPA;
 635                 }
 636         }
 637         lpfc_destroy_vport_work_array(phba, vports);
 638 }
 639
 640 /**
 641  * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler
 642  * @phba: Pointer to hba context object.
 643  * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler.
 644  * @nlp_did: remote node identifer with devloss timeout.
 645  *
 646  * This function is called from the worker thread after invoking devloss
 647  * timeout handler and releasing the reference count for the ndlp with
 648  * which the devloss timeout was handled for SLI4 host. For the devloss
 649  * timeout of the last remote node which had been in use of FCF, when this
 650  * routine is invoked, it shall be guaranteed that none of the remote are
 651  * in-use of FCF. When devloss timeout to the last remote using the FCF,
 652  * if the FIP engine is neither in FCF table scan process nor roundrobin
 653  * failover process, the in-use FCF shall be unregistered. If the FIP
 654  * engine is in FCF discovery process, the devloss timeout state shall
 655  * be set for either the FCF table scan process or roundrobin failover
 656  * process to unregister the in-use FCF.
 657  **/
 658 static void
 659 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse,
 660                                     uint32_t nlp_did)
 661 {
 662         /* If devloss timeout happened to a remote node when FCF had no
 663          * longer been in-use, do nothing.
 664          */
 665         if (!fcf_inuse)
 666                 return;
 667
 668         if (test_bit(HBA_FIP_SUPPORT, &phba->hba_flag) &&
 669             !lpfc_fcf_inuse(phba)) {
 670                 spin_lock_irq(&phba->hbalock);
 671                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
 672                         if (test_and_set_bit(HBA_DEVLOSS_TMO,
 673                                              &phba->hba_flag)) {
 674                                 spin_unlock_irq(&phba->hbalock);
 675                                 return;
 676                         }
 677                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 678                                         "2847 Last remote node (x%x) using "
 679                                         "FCF devloss tmo\n", nlp_did);
 680                 }
 681                 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) {
 682                         spin_unlock_irq(&phba->hbalock);
 683                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 684                                         "2868 Devloss tmo to FCF rediscovery "
 685                                         "in progress\n");
 686                         return;
 687                 }
 688                 spin_unlock_irq(&phba->hbalock);
 689                 if (!test_bit(FCF_TS_INPROG, &phba->hba_flag) &&
 690                     !test_bit(FCF_RR_INPROG, &phba->hba_flag)) {
 691                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 692                                         "2869 Devloss tmo to idle FIP engine, "
 693                                         "unreg in-use FCF and rescan.\n");
 694                         /* Unregister in-use FCF and rescan */
 695                         lpfc_unregister_fcf_rescan(phba);
 696                         return;
 697                 }
 698                 if (test_bit(FCF_TS_INPROG, &phba->hba_flag))
 699                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 700                                         "2870 FCF table scan in progress\n");
 701                 if (test_bit(FCF_RR_INPROG, &phba->hba_flag))
 702                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 703                                         "2871 FLOGI roundrobin FCF failover "
 704                                         "in progress\n");
 705         }
 706         lpfc_unregister_unused_fcf(phba);
 707 }
 708
 709 /**
 710  * lpfc_alloc_fast_evt - Allocates data structure for posting event
 711  * @phba: Pointer to hba context object.
 712  *
 713  * This function is called from the functions which need to post
 714  * events from interrupt context. This function allocates data
 715  * structure required for posting event. It also keeps track of
 716  * number of events pending and prevent event storm when there are
 717  * too many events.
 718  **/
 719 struct lpfc_fast_path_event *
 720 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
 721         struct lpfc_fast_path_event *ret;
 722
 723         /* If there are lot of fast event do not exhaust memory due to this */
 724         if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
 725                 return NULL;
 726
 727         ret = kzalloc(sizeof(struct lpfc_fast_path_event),
 728                         GFP_ATOMIC);
 729         if (ret) {
 730                 atomic_inc(&phba->fast_event_count);
 731                 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
 732                 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
 733         }
 734         return ret;
 735 }
 736
 737 /**
 738  * lpfc_free_fast_evt - Frees event data structure
 739  * @phba: Pointer to hba context object.
 740  * @evt:  Event object which need to be freed.
 741  *
 742  * This function frees the data structure required for posting
 743  * events.
 744  **/
 745 void
 746 lpfc_free_fast_evt(struct lpfc_hba *phba,
 747                 struct lpfc_fast_path_event *evt) {
 748
 749         atomic_dec(&phba->fast_event_count);
 750         kfree(evt);
 751 }
 752
 753 /**
 754  * lpfc_send_fastpath_evt - Posts events generated from fast path
 755  * @phba: Pointer to hba context object.
 756  * @evtp: Event data structure.
 757  *
 758  * This function is called from worker thread, when the interrupt
 759  * context need to post an event. This function posts the event
 760  * to fc transport netlink interface.
 761  **/
 762 static void
 763 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
 764                 struct lpfc_work_evt *evtp)
 765 {
 766         unsigned long evt_category, evt_sub_category;
 767         struct lpfc_fast_path_event *fast_evt_data;
 768         char *evt_data;
 769         uint32_t evt_data_size;
 770         struct Scsi_Host *shost;
 771
 772         fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
 773                 work_evt);
 774
 775         evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
 776         evt_sub_category = (unsigned long) fast_evt_data->un.
 777                         fabric_evt.subcategory;
 778         shost = lpfc_shost_from_vport(fast_evt_data->vport);
 779         if (evt_category == FC_REG_FABRIC_EVENT) {
 780                 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
 781                         evt_data = (char *) &fast_evt_data->un.read_check_error;
 782                         evt_data_size = sizeof(fast_evt_data->un.
 783                                 read_check_error);
 784                 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
 785                         (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
 786                         evt_data = (char *) &fast_evt_data->un.fabric_evt;
 787                         evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
 788                 } else {
 789                         lpfc_free_fast_evt(phba, fast_evt_data);
 790                         return;
 791                 }
 792         } else if (evt_category == FC_REG_SCSI_EVENT) {
 793                 switch (evt_sub_category) {
 794                 case LPFC_EVENT_QFULL:
 795                 case LPFC_EVENT_DEVBSY:
 796                         evt_data = (char *) &fast_evt_data->un.scsi_evt;
 797                         evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
 798                         break;
 799                 case LPFC_EVENT_CHECK_COND:
 800                         evt_data = (char *) &fast_evt_data->un.check_cond_evt;
 801                         evt_data_size =  sizeof(fast_evt_data->un.
 802                                 check_cond_evt);
 803                         break;
 804                 case LPFC_EVENT_VARQUEDEPTH:
 805                         evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
 806                         evt_data_size = sizeof(fast_evt_data->un.
 807                                 queue_depth_evt);
 808                         break;
 809                 default:
 810                         lpfc_free_fast_evt(phba, fast_evt_data);
 811                         return;
 812                 }
 813         } else {
 814                 lpfc_free_fast_evt(phba, fast_evt_data);
 815                 return;
 816         }
 817
 818         if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
 819                 fc_host_post_vendor_event(shost,
 820                         fc_get_event_number(),
 821                         evt_data_size,
 822                         evt_data,
 823                         LPFC_NL_VENDOR_ID);
 824
 825         lpfc_free_fast_evt(phba, fast_evt_data);
 826         return;
 827 }
 828
 829 static void
 830 lpfc_work_list_done(struct lpfc_hba *phba)
 831 {
 832         struct lpfc_work_evt  *evtp = NULL;
 833         struct lpfc_nodelist  *ndlp;
 834         int free_evt;
 835         int fcf_inuse;
 836         uint32_t nlp_did;
 837         bool hba_pci_err;
 838
 839         spin_lock_irq(&phba->hbalock);
 840         while (!list_empty(&phba->work_list)) {
 841                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 842                                  evt_listp);
 843                 spin_unlock_irq(&phba->hbalock);
 844                 hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags);
 845                 free_evt = 1;
 846                 switch (evtp->evt) {
 847                 case LPFC_EVT_ELS_RETRY:
 848                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 849                         if (!hba_pci_err) {
 850                                 lpfc_els_retry_delay_handler(ndlp);
 851                                 free_evt = 0; /* evt is part of ndlp */
 852                         }
 853                         /* decrement the node reference count held
 854                          * for this queued work
 855                          */
 856                         lpfc_nlp_put(ndlp);
 857                         break;
 858                 case LPFC_EVT_DEV_LOSS:
 859                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 860                         fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp);
 861                         free_evt = 0;
 862                         /* decrement the node reference count held for
 863                          * this queued work
 864                          */
 865                         nlp_did = ndlp->nlp_DID;
 866                         lpfc_nlp_put(ndlp);
 867                         if (phba->sli_rev == LPFC_SLI_REV4)
 868                                 lpfc_sli4_post_dev_loss_tmo_handler(phba,
 869                                                                     fcf_inuse,
 870                                                                     nlp_did);
 871                         break;
 872                 case LPFC_EVT_RECOVER_PORT:
 873                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 874                         if (!hba_pci_err) {
 875                                 lpfc_sli_abts_recover_port(ndlp->vport, ndlp);
 876                                 free_evt = 0;
 877                         }
 878                         /* decrement the node reference count held for
 879                          * this queued work
 880                          */
 881                         lpfc_nlp_put(ndlp);
 882                         break;
 883                 case LPFC_EVT_ONLINE:
 884                         if (phba->link_state < LPFC_LINK_DOWN)
 885                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 886                         else
 887                                 *(int *) (evtp->evt_arg1) = 0;
 888                         complete((struct completion *)(evtp->evt_arg2));
 889                         break;
 890                 case LPFC_EVT_OFFLINE_PREP:
 891                         if (phba->link_state >= LPFC_LINK_DOWN)
 892                                 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
 893                         *(int *)(evtp->evt_arg1) = 0;
 894                         complete((struct completion *)(evtp->evt_arg2));
 895                         break;
 896                 case LPFC_EVT_OFFLINE:
 897                         lpfc_offline(phba);
 898                         lpfc_sli_brdrestart(phba);
 899                         *(int *)(evtp->evt_arg1) =
 900                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 901                         lpfc_unblock_mgmt_io(phba);
 902                         complete((struct completion *)(evtp->evt_arg2));
 903                         break;
 904                 case LPFC_EVT_WARM_START:
 905                         lpfc_offline(phba);
 906                         lpfc_reset_barrier(phba);
 907                         lpfc_sli_brdreset(phba);
 908                         lpfc_hba_down_post(phba);
 909                         *(int *)(evtp->evt_arg1) =
 910                                 lpfc_sli_brdready(phba, HS_MBRDY);
 911                         lpfc_unblock_mgmt_io(phba);
 912                         complete((struct completion *)(evtp->evt_arg2));
 913                         break;
 914                 case LPFC_EVT_KILL:
 915                         lpfc_offline(phba);
 916                         *(int *)(evtp->evt_arg1)
 917                                 = (phba->pport->stopped)
 918                                         ? 0 : lpfc_sli_brdkill(phba);
 919                         lpfc_unblock_mgmt_io(phba);
 920                         complete((struct completion *)(evtp->evt_arg2));
 921                         break;
 922                 case LPFC_EVT_FASTPATH_MGMT_EVT:
 923                         lpfc_send_fastpath_evt(phba, evtp);
 924                         free_evt = 0;
 925                         break;
 926                 case LPFC_EVT_RESET_HBA:
 927                         if (!test_bit(FC_UNLOADING, &phba->pport->load_flag))
 928                                 lpfc_reset_hba(phba);
 929                         break;
 930                 }
 931                 if (free_evt)
 932                         kfree(evtp);
 933                 spin_lock_irq(&phba->hbalock);
 934         }
 935         spin_unlock_irq(&phba->hbalock);
 936
 937 }
 938
 939 static void
 940 lpfc_work_done(struct lpfc_hba *phba)
 941 {
 942         struct lpfc_sli_ring *pring;
 943         uint32_t ha_copy, status, control, work_port_events;
 944         struct lpfc_vport **vports;
 945         struct lpfc_vport *vport;
 946         int i;
 947         bool hba_pci_err;
 948
 949         hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags);
 950         spin_lock_irq(&phba->hbalock);
 951         ha_copy = phba->work_ha;
 952         phba->work_ha = 0;
 953         spin_unlock_irq(&phba->hbalock);
 954         if (hba_pci_err)
 955                 ha_copy = 0;
 956
 957         /* First, try to post the next mailbox command to SLI4 device */
 958         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC && !hba_pci_err)
 959                 lpfc_sli4_post_async_mbox(phba);
 960
 961         if (ha_copy & HA_ERATT) {
 962                 /* Handle the error attention event */
 963                 lpfc_handle_eratt(phba);
 964
 965                 if (phba->fw_dump_cmpl) {
 966                         complete(phba->fw_dump_cmpl);
 967                         phba->fw_dump_cmpl = NULL;
 968                 }
 969         }
 970
 971         if (ha_copy & HA_MBATT)
 972                 lpfc_sli_handle_mb_event(phba);
 973
 974         if (ha_copy & HA_LATT)
 975                 lpfc_handle_latt(phba);
 976
 977         /* Handle VMID Events */
 978         if (lpfc_is_vmid_enabled(phba) && !hba_pci_err) {
 979                 if (phba->pport->work_port_events &
 980                     WORKER_CHECK_VMID_ISSUE_QFPA) {
 981                         lpfc_check_vmid_qfpa_issue(phba);
 982                         phba->pport->work_port_events &=
 983                                 ~WORKER_CHECK_VMID_ISSUE_QFPA;
 984                 }
 985                 if (phba->pport->work_port_events &
 986                     WORKER_CHECK_INACTIVE_VMID) {
 987                         lpfc_check_inactive_vmid(phba);
 988                         phba->pport->work_port_events &=
 989                             ~WORKER_CHECK_INACTIVE_VMID;
 990                 }
 991         }
 992
 993         /* Process SLI4 events */
 994         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
 995                 if (test_bit(HBA_RRQ_ACTIVE, &phba->hba_flag))
 996                         lpfc_handle_rrq_active(phba);
 997                 if (test_bit(ELS_XRI_ABORT_EVENT, &phba->hba_flag))
 998                         lpfc_sli4_els_xri_abort_event_proc(phba);
 999                 if (test_bit(ASYNC_EVENT, &phba->hba_flag))
1000                         lpfc_sli4_async_event_proc(phba);
1001                 if (test_and_clear_bit(HBA_POST_RECEIVE_BUFFER,
1002                                        &phba->hba_flag))
1003                         lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
1004                 if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
1005                         lpfc_sli4_fcf_redisc_event_proc(phba);
1006         }
1007
1008         vports = lpfc_create_vport_work_array(phba);
1009         if (vports != NULL)
1010                 for (i = 0; i <= phba->max_vports; i++) {
1011                         /*
1012                          * We could have no vports in array if unloading, so if
1013                          * this happens then just use the pport
1014                          */
1015                         if (vports[i] == NULL && i == 0)
1016                                 vport = phba->pport;
1017                         else
1018                                 vport = vports[i];
1019                         if (vport == NULL)
1020                                 break;
1021                         spin_lock_irq(&vport->work_port_lock);
1022                         work_port_events = vport->work_port_events;
1023                         vport->work_port_events &= ~work_port_events;
1024                         spin_unlock_irq(&vport->work_port_lock);
1025                         if (hba_pci_err)
1026                                 continue;
1027                         if (work_port_events & WORKER_DISC_TMO)
1028                                 lpfc_disc_timeout_handler(vport);
1029                         if (work_port_events & WORKER_ELS_TMO)
1030                                 lpfc_els_timeout_handler(vport);
1031                         if (work_port_events & WORKER_HB_TMO)
1032                                 lpfc_hb_timeout_handler(phba);
1033                         if (work_port_events & WORKER_MBOX_TMO)
1034                                 lpfc_mbox_timeout_handler(phba);
1035                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
1036                                 lpfc_unblock_fabric_iocbs(phba);
1037                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
1038                                 lpfc_ramp_down_queue_handler(phba);
1039                         if (work_port_events & WORKER_DELAYED_DISC_TMO)
1040                                 lpfc_delayed_disc_timeout_handler(vport);
1041                 }
1042         lpfc_destroy_vport_work_array(phba, vports);
1043
1044         pring = lpfc_phba_elsring(phba);
1045         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
1046         status >>= (4*LPFC_ELS_RING);
1047         if (pring && (status & HA_RXMASK ||
1048                       pring->flag & LPFC_DEFERRED_RING_EVENT ||
1049                       test_bit(HBA_SP_QUEUE_EVT, &phba->hba_flag))) {
1050                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
1051                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
1052                         /* Preserve legacy behavior. */
1053                         if (!test_bit(HBA_SP_QUEUE_EVT, &phba->hba_flag))
1054                                 set_bit(LPFC_DATA_READY, &phba->data_flags);
1055                 } else {
1056                         /* Driver could have abort request completed in queue
1057                          * when link goes down.  Allow for this transition.
1058                          */
1059                         if (phba->link_state >= LPFC_LINK_DOWN ||
1060                             phba->link_flag & LS_MDS_LOOPBACK) {
1061                                 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
1062                                 lpfc_sli_handle_slow_ring_event(phba, pring,
1063                                                                 (status &
1064                                                                 HA_RXMASK));
1065                         }
1066                 }
1067                 if (phba->sli_rev == LPFC_SLI_REV4)
1068                         lpfc_drain_txq(phba);
1069                 /*
1070                  * Turn on Ring interrupts
1071                  */
1072                 if (phba->sli_rev <= LPFC_SLI_REV3) {
1073                         spin_lock_irq(&phba->hbalock);
1074                         control = readl(phba->HCregaddr);
1075                         if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
1076                                 lpfc_debugfs_slow_ring_trc(phba,
1077                                         "WRK Enable ring: cntl:x%x hacopy:x%x",
1078                                         control, ha_copy, 0);
1079
1080                                 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
1081                                 writel(control, phba->HCregaddr);
1082                                 readl(phba->HCregaddr); /* flush */
1083                         } else {
1084                                 lpfc_debugfs_slow_ring_trc(phba,
1085                                         "WRK Ring ok:     cntl:x%x hacopy:x%x",
1086                                         control, ha_copy, 0);
1087                         }
1088                         spin_unlock_irq(&phba->hbalock);
1089                 }
1090         }
1091         lpfc_work_list_done(phba);
1092 }
1093
1094 int
1095 lpfc_do_work(void *p)
1096 {
1097         struct lpfc_hba *phba = p;
1098         int rc;
1099
1100         set_user_nice(current, MIN_NICE);
1101         current->flags |= PF_NOFREEZE;
1102         phba->data_flags = 0;
1103
1104         while (!kthread_should_stop()) {
1105                 /* wait and check worker queue activities */
1106                 rc = wait_event_interruptible(phba->work_waitq,
1107                                         (test_and_clear_bit(LPFC_DATA_READY,
1108                                                             &phba->data_flags)
1109                                          || kthread_should_stop()));
1110                 /* Signal wakeup shall terminate the worker thread */
1111                 if (rc) {
1112                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1113                                         "0433 Wakeup on signal: rc=x%x\n", rc);
1114                         break;
1115                 }
1116
1117                 /* Attend pending lpfc data processing */
1118                 lpfc_work_done(phba);
1119         }
1120         phba->worker_thread = NULL;
1121         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1122                         "0432 Worker thread stopped.\n");
1123         return 0;
1124 }
1125
1126 /*
1127  * This is only called to handle FC worker events. Since this a rare
1128  * occurrence, we allocate a struct lpfc_work_evt structure here instead of
1129  * embedding it in the IOCB.
1130  */
1131 int
1132 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
1133                       uint32_t evt)
1134 {
1135         struct lpfc_work_evt  *evtp;
1136         unsigned long flags;
1137
1138         /*
1139          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
1140          * be queued to worker thread for processing
1141          */
1142         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
1143         if (!evtp)
1144                 return 0;
1145
1146         evtp->evt_arg1  = arg1;
1147         evtp->evt_arg2  = arg2;
1148         evtp->evt       = evt;
1149
1150         spin_lock_irqsave(&phba->hbalock, flags);
1151         list_add_tail(&evtp->evt_listp, &phba->work_list);
1152         spin_unlock_irqrestore(&phba->hbalock, flags);
1153
1154         lpfc_worker_wake_up(phba);
1155
1156         return 1;
1157 }
1158
1159 void
1160 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
1161 {
1162         struct lpfc_hba  *phba = vport->phba;
1163         struct lpfc_nodelist *ndlp, *next_ndlp;
1164
1165         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
1166                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
1167                     ((vport->port_type == LPFC_NPIV_PORT) &&
1168                      ((ndlp->nlp_DID == NameServer_DID) ||
1169                       (ndlp->nlp_DID == FDMI_DID) ||
1170                       (ndlp->nlp_DID == Fabric_Cntl_DID))))
1171                         lpfc_unreg_rpi(vport, ndlp);
1172
1173                 /* Leave Fabric nodes alone on link down */
1174                 if ((phba->sli_rev < LPFC_SLI_REV4) &&
1175                     (!remove && ndlp->nlp_type & NLP_FABRIC))
1176                         continue;
1177
1178                 /* Notify transport of connectivity loss to trigger cleanup. */
1179                 if (phba->nvmet_support &&
1180                     ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
1181                         lpfc_nvmet_invalidate_host(phba, ndlp);
1182
1183                 lpfc_disc_state_machine(vport, ndlp, NULL,
1184                                         remove
1185                                         ? NLP_EVT_DEVICE_RM
1186                                         : NLP_EVT_DEVICE_RECOVERY);
1187         }
1188         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
1189                 if (phba->sli_rev == LPFC_SLI_REV4)
1190                         lpfc_sli4_unreg_all_rpis(vport);
1191                 lpfc_mbx_unreg_vpi(vport);
1192                 set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
1193         }
1194 }
1195
1196 void
1197 lpfc_port_link_failure(struct lpfc_vport *vport)
1198 {
1199         lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
1200
1201         /* Cleanup any outstanding received buffers */
1202         lpfc_cleanup_rcv_buffers(vport);
1203
1204         /* Cleanup any outstanding RSCN activity */
1205         lpfc_els_flush_rscn(vport);
1206
1207         /* Cleanup any outstanding ELS commands */
1208         lpfc_els_flush_cmd(vport);
1209
1210         lpfc_cleanup_rpis(vport, 0);
1211
1212         /* Turn off discovery timer if its running */
1213         lpfc_can_disctmo(vport);
1214 }
1215
1216 void
1217 lpfc_linkdown_port(struct lpfc_vport *vport)
1218 {
1219         struct lpfc_hba *phba = vport->phba;
1220         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1221
1222         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1223                 fc_host_post_event(shost, fc_get_event_number(),
1224                                    FCH_EVT_LINKDOWN, 0);
1225
1226         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1227                 "Link Down:       state:x%x rtry:x%x flg:x%x",
1228                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1229
1230         lpfc_port_link_failure(vport);
1231
1232         /* Stop delayed Nport discovery */
1233         clear_bit(FC_DISC_DELAYED, &vport->fc_flag);
1234         del_timer_sync(&vport->delayed_disc_tmo);
1235
1236         if (phba->sli_rev == LPFC_SLI_REV4 &&
1237             vport->port_type == LPFC_PHYSICAL_PORT &&
1238             phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_CONFIG) {
1239                 /* Assume success on link up */
1240                 phba->sli4_hba.fawwpn_flag |= LPFC_FAWWPN_FABRIC;
1241         }
1242 }
1243
1244 int
1245 lpfc_linkdown(struct lpfc_hba *phba)
1246 {
1247         struct lpfc_vport *vport = phba->pport;
1248         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1249         struct lpfc_vport **vports;
1250         LPFC_MBOXQ_t          *mb;
1251         int i;
1252         int offline;
1253
1254         if (phba->link_state == LPFC_LINK_DOWN)
1255                 return 0;
1256
1257         /* Block all SCSI stack I/Os */
1258         lpfc_scsi_dev_block(phba);
1259         offline = pci_channel_offline(phba->pcidev);
1260
1261         /* Decrement the held ndlp if there is a deferred flogi acc */
1262         if (phba->defer_flogi_acc.flag) {
1263                 if (phba->defer_flogi_acc.ndlp) {
1264                         lpfc_nlp_put(phba->defer_flogi_acc.ndlp);
1265                         phba->defer_flogi_acc.ndlp = NULL;
1266                 }
1267         }
1268         phba->defer_flogi_acc.flag = false;
1269
1270         /* Clear external loopback plug detected flag */
1271         phba->link_flag &= ~LS_EXTERNAL_LOOPBACK;
1272
1273         spin_lock_irq(&phba->hbalock);
1274         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
1275         spin_unlock_irq(&phba->hbalock);
1276         if (phba->link_state > LPFC_LINK_DOWN) {
1277                 phba->link_state = LPFC_LINK_DOWN;
1278                 if (phba->sli4_hba.conf_trunk) {
1279                         phba->trunk_link.link0.state = 0;
1280                         phba->trunk_link.link1.state = 0;
1281                         phba->trunk_link.link2.state = 0;
1282                         phba->trunk_link.link3.state = 0;
1283                         phba->trunk_link.phy_lnk_speed =
1284                                                 LPFC_LINK_SPEED_UNKNOWN;
1285                         phba->sli4_hba.link_state.logical_speed =
1286                                                 LPFC_LINK_SPEED_UNKNOWN;
1287                 }
1288                 clear_bit(FC_LBIT, &phba->pport->fc_flag);
1289         }
1290         vports = lpfc_create_vport_work_array(phba);
1291         if (vports != NULL) {
1292                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
1293                         /* Issue a LINK DOWN event to all nodes */
1294                         lpfc_linkdown_port(vports[i]);
1295
1296                         vports[i]->fc_myDID = 0;
1297
1298                         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
1299                             (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1300                                 if (phba->nvmet_support)
1301                                         lpfc_nvmet_update_targetport(phba);
1302                                 else
1303                                         lpfc_nvme_update_localport(vports[i]);
1304                         }
1305                 }
1306         }
1307         lpfc_destroy_vport_work_array(phba, vports);
1308
1309         /* Clean up any SLI3 firmware default rpi's */
1310         if (phba->sli_rev > LPFC_SLI_REV3 || offline)
1311                 goto skip_unreg_did;
1312
1313         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1314         if (mb) {
1315                 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb);
1316                 mb->vport = vport;
1317                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1318                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
1319                     == MBX_NOT_FINISHED) {
1320                         mempool_free(mb, phba->mbox_mem_pool);
1321                 }
1322         }
1323
1324  skip_unreg_did:
1325         /* Setup myDID for link up if we are in pt2pt mode */
1326         if (test_bit(FC_PT2PT, &phba->pport->fc_flag)) {
1327                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1328                 if (mb) {
1329                         lpfc_config_link(phba, mb);
1330                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1331                         mb->vport = vport;
1332                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
1333                             == MBX_NOT_FINISHED) {
1334                                 mempool_free(mb, phba->mbox_mem_pool);
1335                         }
1336                 }
1337                 clear_bit(FC_PT2PT, &phba->pport->fc_flag);
1338                 clear_bit(FC_PT2PT_PLOGI, &phba->pport->fc_flag);
1339                 spin_lock_irq(shost->host_lock);
1340                 phba->pport->rcv_flogi_cnt = 0;
1341                 spin_unlock_irq(shost->host_lock);
1342         }
1343         return 0;
1344 }
1345
1346 static void
1347 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
1348 {
1349         struct lpfc_nodelist *ndlp;
1350
1351         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
1352                 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
1353
1354                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
1355                         continue;
1356                 if (ndlp->nlp_type & NLP_FABRIC) {
1357                         /* On Linkup its safe to clean up the ndlp
1358                          * from Fabric connections.
1359                          */
1360                         if (ndlp->nlp_DID != Fabric_DID)
1361                                 lpfc_unreg_rpi(vport, ndlp);
1362                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1363                 } else if (!test_bit(NLP_NPR_ADISC, &ndlp->nlp_flag)) {
1364                         /* Fail outstanding IO now since device is
1365                          * marked for PLOGI.
1366                          */
1367                         lpfc_unreg_rpi(vport, ndlp);
1368                 }
1369         }
1370 }
1371
1372 static void
1373 lpfc_linkup_port(struct lpfc_vport *vport)
1374 {
1375         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1376         struct lpfc_hba  *phba = vport->phba;
1377
1378         if (test_bit(FC_UNLOADING, &vport->load_flag))
1379                 return;
1380
1381         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1382                 "Link Up:         top:x%x speed:x%x flg:x%x",
1383                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
1384
1385         /* If NPIV is not enabled, only bring the physical port up */
1386         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
1387                 (vport != phba->pport))
1388                 return;
1389
1390         if (phba->defer_flogi_acc.flag) {
1391                 clear_bit(FC_ABORT_DISCOVERY, &vport->fc_flag);
1392                 clear_bit(FC_RSCN_MODE, &vport->fc_flag);
1393                 clear_bit(FC_NLP_MORE, &vport->fc_flag);
1394                 clear_bit(FC_RSCN_DISCOVERY, &vport->fc_flag);
1395         } else {
1396                 clear_bit(FC_PT2PT, &vport->fc_flag);
1397                 clear_bit(FC_PT2PT_PLOGI, &vport->fc_flag);
1398                 clear_bit(FC_ABORT_DISCOVERY, &vport->fc_flag);
1399                 clear_bit(FC_RSCN_MODE, &vport->fc_flag);
1400                 clear_bit(FC_NLP_MORE, &vport->fc_flag);
1401                 clear_bit(FC_RSCN_DISCOVERY, &vport->fc_flag);
1402         }
1403         set_bit(FC_NDISC_ACTIVE, &vport->fc_flag);
1404
1405         spin_lock_irq(shost->host_lock);
1406         vport->fc_ns_retry = 0;
1407         spin_unlock_irq(shost->host_lock);
1408         lpfc_setup_fdmi_mask(vport);
1409
1410         lpfc_linkup_cleanup_nodes(vport);
1411 }
1412
1413 static int
1414 lpfc_linkup(struct lpfc_hba *phba)
1415 {
1416         struct lpfc_vport **vports;
1417         int i;
1418         struct Scsi_Host  *shost = lpfc_shost_from_vport(phba->pport);
1419
1420         phba->link_state = LPFC_LINK_UP;
1421
1422         /* Unblock fabric iocbs if they are blocked */
1423         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
1424         del_timer_sync(&phba->fabric_block_timer);
1425
1426         vports = lpfc_create_vport_work_array(phba);
1427         if (vports != NULL)
1428                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
1429                         lpfc_linkup_port(vports[i]);
1430         lpfc_destroy_vport_work_array(phba, vports);
1431
1432         /* Clear the pport flogi counter in case the link down was
1433          * absorbed without an ACQE. No lock here - in worker thread
1434          * and discovery is synchronized.
1435          */
1436         spin_lock_irq(shost->host_lock);
1437         phba->pport->rcv_flogi_cnt = 0;
1438         spin_unlock_irq(shost->host_lock);
1439
1440         /* reinitialize initial HBA flag */
1441         clear_bit(HBA_FLOGI_ISSUED, &phba->hba_flag);
1442         clear_bit(HBA_RHBA_CMPL, &phba->hba_flag);
1443
1444         return 0;
1445 }
1446
1447 /*
1448  * This routine handles processing a CLEAR_LA mailbox
1449  * command upon completion. It is setup in the LPFC_MBOXQ
1450  * as the completion routine when the command is
1451  * handed off to the SLI layer. SLI3 only.
1452  */
1453 static void
1454 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1455 {
1456         struct lpfc_vport *vport = pmb->vport;
1457         struct lpfc_sli   *psli = &phba->sli;
1458         MAILBOX_t *mb = &pmb->u.mb;
1459         uint32_t control;
1460
1461         /* Since we don't do discovery right now, turn these off here */
1462         psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1463         psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1464
1465         /* Check for error */
1466         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
1467                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
1468                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1469                                  "0320 CLEAR_LA mbxStatus error x%x hba "
1470                                  "state x%x\n",
1471                                  mb->mbxStatus, vport->port_state);
1472                 phba->link_state = LPFC_HBA_ERROR;
1473                 goto out;
1474         }
1475
1476         if (vport->port_type == LPFC_PHYSICAL_PORT)
1477                 phba->link_state = LPFC_HBA_READY;
1478
1479         spin_lock_irq(&phba->hbalock);
1480         psli->sli_flag |= LPFC_PROCESS_LA;
1481         control = readl(phba->HCregaddr);
1482         control |= HC_LAINT_ENA;
1483         writel(control, phba->HCregaddr);
1484         readl(phba->HCregaddr); /* flush */
1485         spin_unlock_irq(&phba->hbalock);
1486         mempool_free(pmb, phba->mbox_mem_pool);
1487         return;
1488
1489 out:
1490         /* Device Discovery completes */
1491         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1492                          "0225 Device Discovery completes\n");
1493         mempool_free(pmb, phba->mbox_mem_pool);
1494
1495         clear_bit(FC_ABORT_DISCOVERY, &vport->fc_flag);
1496
1497         lpfc_can_disctmo(vport);
1498
1499         /* turn on Link Attention interrupts */
1500
1501         spin_lock_irq(&phba->hbalock);
1502         psli->sli_flag |= LPFC_PROCESS_LA;
1503         control = readl(phba->HCregaddr);
1504         control |= HC_LAINT_ENA;
1505         writel(control, phba->HCregaddr);
1506         readl(phba->HCregaddr); /* flush */
1507         spin_unlock_irq(&phba->hbalock);
1508
1509         return;
1510 }
1511
1512 void
1513 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1514 {
1515         struct lpfc_vport *vport = pmb->vport;
1516         LPFC_MBOXQ_t *sparam_mb;
1517         u16 status = pmb->u.mb.mbxStatus;
1518         int rc;
1519
1520         mempool_free(pmb, phba->mbox_mem_pool);
1521
1522         if (status)
1523                 goto out;
1524
1525         /* don't perform discovery for SLI4 loopback diagnostic test */
1526         if ((phba->sli_rev == LPFC_SLI_REV4) &&
1527             !test_bit(HBA_FCOE_MODE, &phba->hba_flag) &&
1528             (phba->link_flag & LS_LOOPBACK_MODE))
1529                 return;
1530
1531         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
1532             test_bit(FC_PUBLIC_LOOP, &vport->fc_flag) &&
1533             !test_bit(FC_LBIT, &vport->fc_flag)) {
1534                         /* Need to wait for FAN - use discovery timer
1535                          * for timeout.  port_state is identically
1536                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
1537                          */
1538                         lpfc_set_disctmo(vport);
1539                         return;
1540         }
1541
1542         /* Start discovery by sending a FLOGI. port_state is identically
1543          * LPFC_FLOGI while waiting for FLOGI cmpl.
1544          */
1545         if (vport->port_state != LPFC_FLOGI) {
1546                 /* Issue MBX_READ_SPARAM to update CSPs before FLOGI if
1547                  * bb-credit recovery is in place.
1548                  */
1549                 if (phba->bbcredit_support && phba->cfg_enable_bbcr &&
1550                     !(phba->link_flag & LS_LOOPBACK_MODE)) {
1551                         sparam_mb = mempool_alloc(phba->mbox_mem_pool,
1552                                                   GFP_KERNEL);
1553                         if (!sparam_mb)
1554                                 goto sparam_out;
1555
1556                         rc = lpfc_read_sparam(phba, sparam_mb, 0);
1557                         if (rc) {
1558                                 mempool_free(sparam_mb, phba->mbox_mem_pool);
1559                                 goto sparam_out;
1560                         }
1561                         sparam_mb->vport = vport;
1562                         sparam_mb->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1563                         rc = lpfc_sli_issue_mbox(phba, sparam_mb, MBX_NOWAIT);
1564                         if (rc == MBX_NOT_FINISHED) {
1565                                 lpfc_mbox_rsrc_cleanup(phba, sparam_mb,
1566                                                        MBOX_THD_UNLOCKED);
1567                                 goto sparam_out;
1568                         }
1569
1570                         set_bit(HBA_DEFER_FLOGI, &phba->hba_flag);
1571                 }  else {
1572                         lpfc_initial_flogi(vport);
1573                 }
1574         } else {
1575                 if (test_bit(FC_PT2PT, &vport->fc_flag))
1576                         lpfc_disc_start(vport);
1577         }
1578         return;
1579
1580 out:
1581         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1582                          "0306 CONFIG_LINK mbxStatus error x%x HBA state x%x\n",
1583                          status, vport->port_state);
1584
1585 sparam_out:
1586         lpfc_linkdown(phba);
1587
1588         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1589                          "0200 CONFIG_LINK bad hba state x%x\n",
1590                          vport->port_state);
1591
1592         lpfc_issue_clear_la(phba, vport);
1593         return;
1594 }
1595
1596 /**
1597  * lpfc_sli4_clear_fcf_rr_bmask
1598  * @phba: pointer to the struct lpfc_hba for this port.
1599  * This fucnction resets the round robin bit mask and clears the
1600  * fcf priority list. The list deletions are done while holding the
1601  * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared
1602  * from the lpfc_fcf_pri record.
1603  **/
1604 void
1605 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba)
1606 {
1607         struct lpfc_fcf_pri *fcf_pri;
1608         struct lpfc_fcf_pri *next_fcf_pri;
1609         memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask));
1610         spin_lock_irq(&phba->hbalock);
1611         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
1612                                 &phba->fcf.fcf_pri_list, list) {
1613                 list_del_init(&fcf_pri->list);
1614                 fcf_pri->fcf_rec.flag = 0;
1615         }
1616         spin_unlock_irq(&phba->hbalock);
1617 }
1618 static void
1619 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1620 {
1621         struct lpfc_vport *vport = mboxq->vport;
1622
1623         if (mboxq->u.mb.mbxStatus) {
1624                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1625                                  "2017 REG_FCFI mbxStatus error x%x "
1626                                  "HBA state x%x\n", mboxq->u.mb.mbxStatus,
1627                                  vport->port_state);
1628                 goto fail_out;
1629         }
1630
1631         /* Start FCoE discovery by sending a FLOGI. */
1632         phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1633         /* Set the FCFI registered flag */
1634         spin_lock_irq(&phba->hbalock);
1635         phba->fcf.fcf_flag |= FCF_REGISTERED;
1636         spin_unlock_irq(&phba->hbalock);
1637
1638         /* If there is a pending FCoE event, restart FCF table scan. */
1639         if (!test_bit(FCF_RR_INPROG, &phba->hba_flag) &&
1640             lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF))
1641                 goto fail_out;
1642
1643         /* Mark successful completion of FCF table scan */
1644         spin_lock_irq(&phba->hbalock);
1645         phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1646         spin_unlock_irq(&phba->hbalock);
1647         clear_bit(FCF_TS_INPROG, &phba->hba_flag);
1648         if (vport->port_state != LPFC_FLOGI) {
1649                 set_bit(FCF_RR_INPROG, &phba->hba_flag);
1650                 lpfc_issue_init_vfi(vport);
1651         }
1652         goto out;
1653
1654 fail_out:
1655         clear_bit(FCF_RR_INPROG, &phba->hba_flag);
1656 out:
1657         mempool_free(mboxq, phba->mbox_mem_pool);
1658 }
1659
1660 /**
1661  * lpfc_fab_name_match - Check if the fcf fabric name match.
1662  * @fab_name: pointer to fabric name.
1663  * @new_fcf_record: pointer to fcf record.
1664  *
1665  * This routine compare the fcf record's fabric name with provided
1666  * fabric name. If the fabric name are identical this function
1667  * returns 1 else return 0.
1668  **/
1669 static uint32_t
1670 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1671 {
1672         if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1673                 return 0;
1674         if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1675                 return 0;
1676         if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1677                 return 0;
1678         if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1679                 return 0;
1680         if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1681                 return 0;
1682         if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1683                 return 0;
1684         if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1685                 return 0;
1686         if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1687                 return 0;
1688         return 1;
1689 }
1690
1691 /**
1692  * lpfc_sw_name_match - Check if the fcf switch name match.
1693  * @sw_name: pointer to switch name.
1694  * @new_fcf_record: pointer to fcf record.
1695  *
1696  * This routine compare the fcf record's switch name with provided
1697  * switch name. If the switch name are identical this function
1698  * returns 1 else return 0.
1699  **/
1700 static uint32_t
1701 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1702 {
1703         if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1704                 return 0;
1705         if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1706                 return 0;
1707         if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1708                 return 0;
1709         if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1710                 return 0;
1711         if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1712                 return 0;
1713         if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1714                 return 0;
1715         if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1716                 return 0;
1717         if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1718                 return 0;
1719         return 1;
1720 }
1721
1722 /**
1723  * lpfc_mac_addr_match - Check if the fcf mac address match.
1724  * @mac_addr: pointer to mac address.
1725  * @new_fcf_record: pointer to fcf record.
1726  *
1727  * This routine compare the fcf record's mac address with HBA's
1728  * FCF mac address. If the mac addresses are identical this function
1729  * returns 1 else return 0.
1730  **/
1731 static uint32_t
1732 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1733 {
1734         if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1735                 return 0;
1736         if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1737                 return 0;
1738         if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1739                 return 0;
1740         if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1741                 return 0;
1742         if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1743                 return 0;
1744         if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1745                 return 0;
1746         return 1;
1747 }
1748
1749 static bool
1750 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1751 {
1752         return (curr_vlan_id == new_vlan_id);
1753 }
1754
1755 /**
1756  * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record.
1757  * @phba: pointer to lpfc hba data structure.
1758  * @fcf_index: Index for the lpfc_fcf_record.
1759  * @new_fcf_record: pointer to hba fcf record.
1760  *
1761  * This routine updates the driver FCF priority record from the new HBA FCF
1762  * record. The hbalock is asserted held in the code path calling this
1763  * routine.
1764  **/
1765 static void
1766 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index,
1767                                  struct fcf_record *new_fcf_record
1768                                  )
1769 {
1770         struct lpfc_fcf_pri *fcf_pri;
1771
1772         fcf_pri = &phba->fcf.fcf_pri[fcf_index];
1773         fcf_pri->fcf_rec.fcf_index = fcf_index;
1774         /* FCF record priority */
1775         fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
1776
1777 }
1778
1779 /**
1780  * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1781  * @fcf_rec: pointer to driver fcf record.
1782  * @new_fcf_record: pointer to fcf record.
1783  *
1784  * This routine copies the FCF information from the FCF
1785  * record to lpfc_hba data structure.
1786  **/
1787 static void
1788 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1789                      struct fcf_record *new_fcf_record)
1790 {
1791         /* Fabric name */
1792         fcf_rec->fabric_name[0] =
1793                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1794         fcf_rec->fabric_name[1] =
1795                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1796         fcf_rec->fabric_name[2] =
1797                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1798         fcf_rec->fabric_name[3] =
1799                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1800         fcf_rec->fabric_name[4] =
1801                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1802         fcf_rec->fabric_name[5] =
1803                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1804         fcf_rec->fabric_name[6] =
1805                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1806         fcf_rec->fabric_name[7] =
1807                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1808         /* Mac address */
1809         fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1810         fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1811         fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1812         fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1813         fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1814         fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1815         /* FCF record index */
1816         fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1817         /* FCF record priority */
1818         fcf_rec->priority = new_fcf_record->fip_priority;
1819         /* Switch name */
1820         fcf_rec->switch_name[0] =
1821                 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1822         fcf_rec->switch_name[1] =
1823                 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1824         fcf_rec->switch_name[2] =
1825                 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1826         fcf_rec->switch_name[3] =
1827                 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1828         fcf_rec->switch_name[4] =
1829                 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1830         fcf_rec->switch_name[5] =
1831                 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1832         fcf_rec->switch_name[6] =
1833                 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1834         fcf_rec->switch_name[7] =
1835                 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1836 }
1837
1838 /**
1839  * __lpfc_update_fcf_record - Update driver fcf record
1840  * @phba: pointer to lpfc hba data structure.
1841  * @fcf_rec: pointer to driver fcf record.
1842  * @new_fcf_record: pointer to hba fcf record.
1843  * @addr_mode: address mode to be set to the driver fcf record.
1844  * @vlan_id: vlan tag to be set to the driver fcf record.
1845  * @flag: flag bits to be set to the driver fcf record.
1846  *
1847  * This routine updates the driver FCF record from the new HBA FCF record
1848  * together with the address mode, vlan_id, and other informations. This
1849  * routine is called with the hbalock held.
1850  **/
1851 static void
1852 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1853                        struct fcf_record *new_fcf_record, uint32_t addr_mode,
1854                        uint16_t vlan_id, uint32_t flag)
1855 {
1856         lockdep_assert_held(&phba->hbalock);
1857
1858         /* Copy the fields from the HBA's FCF record */
1859         lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1860         /* Update other fields of driver FCF record */
1861         fcf_rec->addr_mode = addr_mode;
1862         fcf_rec->vlan_id = vlan_id;
1863         fcf_rec->flag |= (flag | RECORD_VALID);
1864         __lpfc_update_fcf_record_pri(phba,
1865                 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record),
1866                                  new_fcf_record);
1867 }
1868
1869 /**
1870  * lpfc_register_fcf - Register the FCF with hba.
1871  * @phba: pointer to lpfc hba data structure.
1872  *
1873  * This routine issues a register fcfi mailbox command to register
1874  * the fcf with HBA.
1875  **/
1876 static void
1877 lpfc_register_fcf(struct lpfc_hba *phba)
1878 {
1879         LPFC_MBOXQ_t *fcf_mbxq;
1880         int rc;
1881
1882         spin_lock_irq(&phba->hbalock);
1883         /* If the FCF is not available do nothing. */
1884         if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1885                 spin_unlock_irq(&phba->hbalock);
1886                 clear_bit(FCF_TS_INPROG, &phba->hba_flag);
1887                 clear_bit(FCF_RR_INPROG, &phba->hba_flag);
1888                 return;
1889         }
1890
1891         /* The FCF is already registered, start discovery */
1892         if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1893                 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1894                 spin_unlock_irq(&phba->hbalock);
1895                 clear_bit(FCF_TS_INPROG, &phba->hba_flag);
1896                 if (phba->pport->port_state != LPFC_FLOGI &&
1897                     test_bit(FC_FABRIC, &phba->pport->fc_flag)) {
1898                         set_bit(FCF_RR_INPROG, &phba->hba_flag);
1899                         lpfc_initial_flogi(phba->pport);
1900                         return;
1901                 }
1902                 return;
1903         }
1904         spin_unlock_irq(&phba->hbalock);
1905
1906         fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1907         if (!fcf_mbxq) {
1908                 clear_bit(FCF_TS_INPROG, &phba->hba_flag);
1909                 clear_bit(FCF_RR_INPROG, &phba->hba_flag);
1910                 return;
1911         }
1912
1913         lpfc_reg_fcfi(phba, fcf_mbxq);
1914         fcf_mbxq->vport = phba->pport;
1915         fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1916         rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1917         if (rc == MBX_NOT_FINISHED) {
1918                 clear_bit(FCF_TS_INPROG, &phba->hba_flag);
1919                 clear_bit(FCF_RR_INPROG, &phba->hba_flag);
1920                 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1921         }
1922
1923         return;
1924 }
1925
1926 /**
1927  * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1928  * @phba: pointer to lpfc hba data structure.
1929  * @new_fcf_record: pointer to fcf record.
1930  * @boot_flag: Indicates if this record used by boot bios.
1931  * @addr_mode: The address mode to be used by this FCF
1932  * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1933  *
1934  * This routine compare the fcf record with connect list obtained from the
1935  * config region to decide if this FCF can be used for SAN discovery. It returns
1936  * 1 if this record can be used for SAN discovery else return zero. If this FCF
1937  * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1938  * is used by boot bios and addr_mode will indicate the addressing mode to be
1939  * used for this FCF when the function returns.
1940  * If the FCF record need to be used with a particular vlan id, the vlan is
1941  * set in the vlan_id on return of the function. If not VLAN tagging need to
1942  * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
1943  **/
1944 static int
1945 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1946                         struct fcf_record *new_fcf_record,
1947                         uint32_t *boot_flag, uint32_t *addr_mode,
1948                         uint16_t *vlan_id)
1949 {
1950         struct lpfc_fcf_conn_entry *conn_entry;
1951         int i, j, fcf_vlan_id = 0;
1952
1953         /* Find the lowest VLAN id in the FCF record */
1954         for (i = 0; i < 512; i++) {
1955                 if (new_fcf_record->vlan_bitmap[i]) {
1956                         fcf_vlan_id = i * 8;
1957                         j = 0;
1958                         while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1959                                 j++;
1960                                 fcf_vlan_id++;
1961                         }
1962                         break;
1963                 }
1964         }
1965
1966         /* FCF not valid/available or solicitation in progress */
1967         if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1968             !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) ||
1969             bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record))
1970                 return 0;
1971
1972         if (!test_bit(HBA_FIP_SUPPORT, &phba->hba_flag)) {
1973                 *boot_flag = 0;
1974                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1975                                 new_fcf_record);
1976                 if (phba->valid_vlan)
1977                         *vlan_id = phba->vlan_id;
1978                 else
1979                         *vlan_id = LPFC_FCOE_NULL_VID;
1980                 return 1;
1981         }
1982
1983         /*
1984          * If there are no FCF connection table entry, driver connect to all
1985          * FCFs.
1986          */
1987         if (list_empty(&phba->fcf_conn_rec_list)) {
1988                 *boot_flag = 0;
1989                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1990                         new_fcf_record);
1991
1992                 /*
1993                  * When there are no FCF connect entries, use driver's default
1994                  * addressing mode - FPMA.
1995                  */
1996                 if (*addr_mode & LPFC_FCF_FPMA)
1997                         *addr_mode = LPFC_FCF_FPMA;
1998
1999                 /* If FCF record report a vlan id use that vlan id */
2000                 if (fcf_vlan_id)
2001                         *vlan_id = fcf_vlan_id;
2002                 else
2003                         *vlan_id = LPFC_FCOE_NULL_VID;
2004                 return 1;
2005         }
2006
2007         list_for_each_entry(conn_entry,
2008                             &phba->fcf_conn_rec_list, list) {
2009                 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
2010                         continue;
2011
2012                 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
2013                         !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
2014                                              new_fcf_record))
2015                         continue;
2016                 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
2017                         !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
2018                                             new_fcf_record))
2019                         continue;
2020                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
2021                         /*
2022                          * If the vlan bit map does not have the bit set for the
2023                          * vlan id to be used, then it is not a match.
2024                          */
2025                         if (!(new_fcf_record->vlan_bitmap
2026                                 [conn_entry->conn_rec.vlan_tag / 8] &
2027                                 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
2028                                 continue;
2029                 }
2030
2031                 /*
2032                  * If connection record does not support any addressing mode,
2033                  * skip the FCF record.
2034                  */
2035                 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
2036                         & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
2037                         continue;
2038
2039                 /*
2040                  * Check if the connection record specifies a required
2041                  * addressing mode.
2042                  */
2043                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2044                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
2045
2046                         /*
2047                          * If SPMA required but FCF not support this continue.
2048                          */
2049                         if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2050                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
2051                                         new_fcf_record) & LPFC_FCF_SPMA))
2052                                 continue;
2053
2054                         /*
2055                          * If FPMA required but FCF not support this continue.
2056                          */
2057                         if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2058                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
2059                                 new_fcf_record) & LPFC_FCF_FPMA))
2060                                 continue;
2061                 }
2062
2063                 /*
2064                  * This fcf record matches filtering criteria.
2065                  */
2066                 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
2067                         *boot_flag = 1;
2068                 else
2069                         *boot_flag = 0;
2070
2071                 /*
2072                  * If user did not specify any addressing mode, or if the
2073                  * preferred addressing mode specified by user is not supported
2074                  * by FCF, allow fabric to pick the addressing mode.
2075                  */
2076                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
2077                                 new_fcf_record);
2078                 /*
2079                  * If the user specified a required address mode, assign that
2080                  * address mode
2081                  */
2082                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2083                         (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
2084                         *addr_mode = (conn_entry->conn_rec.flags &
2085                                 FCFCNCT_AM_SPMA) ?
2086                                 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
2087                 /*
2088                  * If the user specified a preferred address mode, use the
2089                  * addr mode only if FCF support the addr_mode.
2090                  */
2091                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2092                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
2093                         (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2094                         (*addr_mode & LPFC_FCF_SPMA))
2095                                 *addr_mode = LPFC_FCF_SPMA;
2096                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2097                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
2098                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2099                         (*addr_mode & LPFC_FCF_FPMA))
2100                                 *addr_mode = LPFC_FCF_FPMA;
2101
2102                 /* If matching connect list has a vlan id, use it */
2103                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
2104                         *vlan_id = conn_entry->conn_rec.vlan_tag;
2105                 /*
2106                  * If no vlan id is specified in connect list, use the vlan id
2107                  * in the FCF record
2108                  */
2109                 else if (fcf_vlan_id)
2110                         *vlan_id = fcf_vlan_id;
2111                 else
2112                         *vlan_id = LPFC_FCOE_NULL_VID;
2113
2114                 return 1;
2115         }
2116
2117         return 0;
2118 }
2119
2120 /**
2121  * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
2122  * @phba: pointer to lpfc hba data structure.
2123  * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
2124  *
2125  * This function check if there is any fcoe event pending while driver
2126  * scan FCF entries. If there is any pending event, it will restart the
2127  * FCF saning and return 1 else return 0.
2128  */
2129 int
2130 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
2131 {
2132         /*
2133          * If the Link is up and no FCoE events while in the
2134          * FCF discovery, no need to restart FCF discovery.
2135          */
2136         if ((phba->link_state  >= LPFC_LINK_UP) &&
2137             (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
2138                 return 0;
2139
2140         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2141                         "2768 Pending link or FCF event during current "
2142                         "handling of the previous event: link_state:x%x, "
2143                         "evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
2144                         phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
2145                         phba->fcoe_eventtag);
2146
2147         spin_lock_irq(&phba->hbalock);
2148         phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
2149         spin_unlock_irq(&phba->hbalock);
2150
2151         if (phba->link_state >= LPFC_LINK_UP) {
2152                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
2153                                 "2780 Restart FCF table scan due to "
2154                                 "pending FCF event:evt_tag_at_scan:x%x, "
2155                                 "evt_tag_current:x%x\n",
2156                                 phba->fcoe_eventtag_at_fcf_scan,
2157                                 phba->fcoe_eventtag);
2158                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
2159         } else {
2160                 /*
2161                  * Do not continue FCF discovery and clear FCF_TS_INPROG
2162                  * flag
2163                  */
2164                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
2165                                 "2833 Stop FCF discovery process due to link "
2166                                 "state change (x%x)\n", phba->link_state);
2167                 clear_bit(FCF_TS_INPROG, &phba->hba_flag);
2168                 clear_bit(FCF_RR_INPROG, &phba->hba_flag);
2169                 spin_lock_irq(&phba->hbalock);
2170                 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
2171                 spin_unlock_irq(&phba->hbalock);
2172         }
2173
2174         /* Unregister the currently registered FCF if required */
2175         if (unreg_fcf) {
2176                 spin_lock_irq(&phba->hbalock);
2177                 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
2178                 spin_unlock_irq(&phba->hbalock);
2179                 lpfc_sli4_unregister_fcf(phba);
2180         }
2181         return 1;
2182 }
2183
2184 /**
2185  * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
2186  * @phba: pointer to lpfc hba data structure.
2187  * @fcf_cnt: number of eligible fcf record seen so far.
2188  *
2189  * This function makes an running random selection decision on FCF record to
2190  * use through a sequence of @fcf_cnt eligible FCF records with equal
2191  * probability. To perform integer manunipulation of random numbers with
2192  * size unit32_t, a 16-bit random number returned from get_random_u16() is
2193  * taken as the random random number generated.
2194  *
2195  * Returns true when outcome is for the newly read FCF record should be
2196  * chosen; otherwise, return false when outcome is for keeping the previously
2197  * chosen FCF record.
2198  **/
2199 static bool
2200 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
2201 {
2202         uint32_t rand_num;
2203
2204         /* Get 16-bit uniform random number */
2205         rand_num = get_random_u16();
2206
2207         /* Decision with probability 1/fcf_cnt */
2208         if ((fcf_cnt * rand_num) < 0xFFFF)
2209                 return true;
2210         else
2211                 return false;
2212 }
2213
2214 /**
2215  * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
2216  * @phba: pointer to lpfc hba data structure.
2217  * @mboxq: pointer to mailbox object.
2218  * @next_fcf_index: pointer to holder of next fcf index.
2219  *
2220  * This routine parses the non-embedded fcf mailbox command by performing the
2221  * necessarily error checking, non-embedded read FCF record mailbox command
2222  * SGE parsing, and endianness swapping.
2223  *
2224  * Returns the pointer to the new FCF record in the non-embedded mailbox
2225  * command DMA memory if successfully, other NULL.
2226  */
2227 static struct fcf_record *
2228 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
2229                              uint16_t *next_fcf_index)
2230 {
2231         void *virt_addr;
2232         struct lpfc_mbx_sge sge;
2233         struct lpfc_mbx_read_fcf_tbl *read_fcf;
2234         uint32_t shdr_status, shdr_add_status, if_type;
2235         union lpfc_sli4_cfg_shdr *shdr;
2236         struct fcf_record *new_fcf_record;
2237
2238         /* Get the first SGE entry from the non-embedded DMA memory. This
2239          * routine only uses a single SGE.
2240          */
2241         lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
2242         if (unlikely(!mboxq->sge_array)) {
2243                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2244                                 "2524 Failed to get the non-embedded SGE "
2245                                 "virtual address\n");
2246                 return NULL;
2247         }
2248         virt_addr = mboxq->sge_array->addr[0];
2249
2250         shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
2251         lpfc_sli_pcimem_bcopy(shdr, shdr,
2252                               sizeof(union lpfc_sli4_cfg_shdr));
2253         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
2254         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
2255         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
2256         if (shdr_status || shdr_add_status) {
2257                 if (shdr_status == STATUS_FCF_TABLE_EMPTY ||
2258                                         if_type == LPFC_SLI_INTF_IF_TYPE_2)
2259                         lpfc_printf_log(phba, KERN_ERR,
2260                                         LOG_TRACE_EVENT,
2261                                         "2726 READ_FCF_RECORD Indicates empty "
2262                                         "FCF table.\n");
2263                 else
2264                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2265                                         "2521 READ_FCF_RECORD mailbox failed "
2266                                         "with status x%x add_status x%x, "
2267                                         "mbx\n", shdr_status, shdr_add_status);
2268                 return NULL;
2269         }
2270
2271         /* Interpreting the returned information of the FCF record */
2272         read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
2273         lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
2274                               sizeof(struct lpfc_mbx_read_fcf_tbl));
2275         *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
2276         new_fcf_record = (struct fcf_record *)(virt_addr +
2277                           sizeof(struct lpfc_mbx_read_fcf_tbl));
2278         lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
2279                                 offsetof(struct fcf_record, vlan_bitmap));
2280         new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
2281         new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
2282
2283         return new_fcf_record;
2284 }
2285
2286 /**
2287  * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
2288  * @phba: pointer to lpfc hba data structure.
2289  * @fcf_record: pointer to the fcf record.
2290  * @vlan_id: the lowest vlan identifier associated to this fcf record.
2291  * @next_fcf_index: the index to the next fcf record in hba's fcf table.
2292  *
2293  * This routine logs the detailed FCF record if the LOG_FIP loggin is
2294  * enabled.
2295  **/
2296 static void
2297 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
2298                               struct fcf_record *fcf_record,
2299                               uint16_t vlan_id,
2300                               uint16_t next_fcf_index)
2301 {
2302         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2303                         "2764 READ_FCF_RECORD:\n"
2304                         "\tFCF_Index     : x%x\n"
2305                         "\tFCF_Avail     : x%x\n"
2306                         "\tFCF_Valid     : x%x\n"
2307                         "\tFCF_SOL       : x%x\n"
2308                         "\tFIP_Priority  : x%x\n"
2309                         "\tMAC_Provider  : x%x\n"
2310                         "\tLowest VLANID : x%x\n"
2311                         "\tFCF_MAC Addr  : x%x:%x:%x:%x:%x:%x\n"
2312                         "\tFabric_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
2313                         "\tSwitch_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
2314                         "\tNext_FCF_Index: x%x\n",
2315                         bf_get(lpfc_fcf_record_fcf_index, fcf_record),
2316                         bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
2317                         bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
2318                         bf_get(lpfc_fcf_record_fcf_sol, fcf_record),
2319                         fcf_record->fip_priority,
2320                         bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
2321                         vlan_id,
2322                         bf_get(lpfc_fcf_record_mac_0, fcf_record),
2323                         bf_get(lpfc_fcf_record_mac_1, fcf_record),
2324                         bf_get(lpfc_fcf_record_mac_2, fcf_record),
2325                         bf_get(lpfc_fcf_record_mac_3, fcf_record),
2326                         bf_get(lpfc_fcf_record_mac_4, fcf_record),
2327                         bf_get(lpfc_fcf_record_mac_5, fcf_record),
2328                         bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
2329                         bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
2330                         bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
2331                         bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
2332                         bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
2333                         bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
2334                         bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
2335                         bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
2336                         bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
2337                         bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
2338                         bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
2339                         bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
2340                         bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
2341                         bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
2342                         bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
2343                         bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
2344                         next_fcf_index);
2345 }
2346
2347 /**
2348  * lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
2349  * @phba: pointer to lpfc hba data structure.
2350  * @fcf_rec: pointer to an existing FCF record.
2351  * @new_fcf_record: pointer to a new FCF record.
2352  * @new_vlan_id: vlan id from the new FCF record.
2353  *
2354  * This function performs matching test of a new FCF record against an existing
2355  * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
2356  * will not be used as part of the FCF record matching criteria.
2357  *
2358  * Returns true if all the fields matching, otherwise returns false.
2359  */
2360 static bool
2361 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
2362                            struct lpfc_fcf_rec *fcf_rec,
2363                            struct fcf_record *new_fcf_record,
2364                            uint16_t new_vlan_id)
2365 {
2366         if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
2367                 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
2368                         return false;
2369         if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
2370                 return false;
2371         if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
2372                 return false;
2373         if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
2374                 return false;
2375         if (fcf_rec->priority != new_fcf_record->fip_priority)
2376                 return false;
2377         return true;
2378 }
2379
2380 /**
2381  * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf
2382  * @vport: Pointer to vport object.
2383  * @fcf_index: index to next fcf.
2384  *
2385  * This function processing the roundrobin fcf failover to next fcf index.
2386  * When this function is invoked, there will be a current fcf registered
2387  * for flogi.
2388  * Return: 0 for continue retrying flogi on currently registered fcf;
2389  *         1 for stop flogi on currently registered fcf;
2390  */
2391 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index)
2392 {
2393         struct lpfc_hba *phba = vport->phba;
2394         int rc;
2395
2396         if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
2397                 if (test_bit(HBA_DEVLOSS_TMO, &phba->hba_flag)) {
2398                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2399                                         "2872 Devloss tmo with no eligible "
2400                                         "FCF, unregister in-use FCF (x%x) "
2401                                         "and rescan FCF table\n",
2402                                         phba->fcf.current_rec.fcf_indx);
2403                         lpfc_unregister_fcf_rescan(phba);
2404                         goto stop_flogi_current_fcf;
2405                 }
2406                 /* Mark the end to FLOGI roundrobin failover */
2407                 clear_bit(FCF_RR_INPROG, &phba->hba_flag);
2408                 /* Allow action to new fcf asynchronous event */
2409                 spin_lock_irq(&phba->hbalock);
2410                 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
2411                 spin_unlock_irq(&phba->hbalock);
2412                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2413                                 "2865 No FCF available, stop roundrobin FCF "
2414                                 "failover and change port state:x%x/x%x\n",
2415                                 phba->pport->port_state, LPFC_VPORT_UNKNOWN);
2416                 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
2417
2418                 if (!phba->fcf.fcf_redisc_attempted) {
2419                         lpfc_unregister_fcf(phba);
2420
2421                         rc = lpfc_sli4_redisc_fcf_table(phba);
2422                         if (!rc) {
2423                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2424                                                 "3195 Rediscover FCF table\n");
2425                                 phba->fcf.fcf_redisc_attempted = 1;
2426                                 lpfc_sli4_clear_fcf_rr_bmask(phba);
2427                         } else {
2428                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2429                                                 "3196 Rediscover FCF table "
2430                                                 "failed. Status:x%x\n", rc);
2431                         }
2432                 } else {
2433                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2434                                         "3197 Already rediscover FCF table "
2435                                         "attempted. No more retry\n");
2436                 }
2437                 goto stop_flogi_current_fcf;
2438         } else {
2439                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS,
2440                                 "2794 Try FLOGI roundrobin FCF failover to "
2441                                 "(x%x)\n", fcf_index);
2442                 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index);
2443                 if (rc)
2444                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
2445                                         "2761 FLOGI roundrobin FCF failover "
2446                                         "failed (rc:x%x) to read FCF (x%x)\n",
2447                                         rc, phba->fcf.current_rec.fcf_indx);
2448                 else
2449                         goto stop_flogi_current_fcf;
2450         }
2451         return 0;
2452
2453 stop_flogi_current_fcf:
2454         lpfc_can_disctmo(vport);
2455         return 1;
2456 }
2457
2458 /**
2459  * lpfc_sli4_fcf_pri_list_del
2460  * @phba: pointer to lpfc hba data structure.
2461  * @fcf_index: the index of the fcf record to delete
2462  * This routine checks the on list flag of the fcf_index to be deleted.
2463  * If it is one the list then it is removed from the list, and the flag
2464  * is cleared. This routine grab the hbalock before removing the fcf
2465  * record from the list.
2466  **/
2467 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba,
2468                         uint16_t fcf_index)
2469 {
2470         struct lpfc_fcf_pri *new_fcf_pri;
2471
2472         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2473         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2474                 "3058 deleting idx x%x pri x%x flg x%x\n",
2475                 fcf_index, new_fcf_pri->fcf_rec.priority,
2476                  new_fcf_pri->fcf_rec.flag);
2477         spin_lock_irq(&phba->hbalock);
2478         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) {
2479                 if (phba->fcf.current_rec.priority ==
2480                                 new_fcf_pri->fcf_rec.priority)
2481                         phba->fcf.eligible_fcf_cnt--;
2482                 list_del_init(&new_fcf_pri->list);
2483                 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST;
2484         }
2485         spin_unlock_irq(&phba->hbalock);
2486 }
2487
2488 /**
2489  * lpfc_sli4_set_fcf_flogi_fail
2490  * @phba: pointer to lpfc hba data structure.
2491  * @fcf_index: the index of the fcf record to update
2492  * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED
2493  * flag so the round robin selection for the particular priority level
2494  * will try a different fcf record that does not have this bit set.
2495  * If the fcf record is re-read for any reason this flag is cleared brfore
2496  * adding it to the priority list.
2497  **/
2498 void
2499 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index)
2500 {
2501         struct lpfc_fcf_pri *new_fcf_pri;
2502         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2503         spin_lock_irq(&phba->hbalock);
2504         new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED;
2505         spin_unlock_irq(&phba->hbalock);
2506 }
2507
2508 /**
2509  * lpfc_sli4_fcf_pri_list_add
2510  * @phba: pointer to lpfc hba data structure.
2511  * @fcf_index: the index of the fcf record to add
2512  * @new_fcf_record: pointer to a new FCF record.
2513  * This routine checks the priority of the fcf_index to be added.
2514  * If it is a lower priority than the current head of the fcf_pri list
2515  * then it is added to the list in the right order.
2516  * If it is the same priority as the current head of the list then it
2517  * is added to the head of the list and its bit in the rr_bmask is set.
2518  * If the fcf_index to be added is of a higher priority than the current
2519  * head of the list then the rr_bmask is cleared, its bit is set in the
2520  * rr_bmask and it is added to the head of the list.
2521  * returns:
2522  * 0=success 1=failure
2523  **/
2524 static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba,
2525         uint16_t fcf_index,
2526         struct fcf_record *new_fcf_record)
2527 {
2528         uint16_t current_fcf_pri;
2529         uint16_t last_index;
2530         struct lpfc_fcf_pri *fcf_pri;
2531         struct lpfc_fcf_pri *next_fcf_pri;
2532         struct lpfc_fcf_pri *new_fcf_pri;
2533         int ret;
2534
2535         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2536         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2537                 "3059 adding idx x%x pri x%x flg x%x\n",
2538                 fcf_index, new_fcf_record->fip_priority,
2539                  new_fcf_pri->fcf_rec.flag);
2540         spin_lock_irq(&phba->hbalock);
2541         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST)
2542                 list_del_init(&new_fcf_pri->list);
2543         new_fcf_pri->fcf_rec.fcf_index = fcf_index;
2544         new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
2545         if (list_empty(&phba->fcf.fcf_pri_list)) {
2546                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2547                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2548                                 new_fcf_pri->fcf_rec.fcf_index);
2549                 goto out;
2550         }
2551
2552         last_index = find_first_bit(phba->fcf.fcf_rr_bmask,
2553                                 LPFC_SLI4_FCF_TBL_INDX_MAX);
2554         if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
2555                 ret = 0; /* Empty rr list */
2556                 goto out;
2557         }
2558         current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority;
2559         if (new_fcf_pri->fcf_rec.priority <=  current_fcf_pri) {
2560                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2561                 if (new_fcf_pri->fcf_rec.priority <  current_fcf_pri) {
2562                         memset(phba->fcf.fcf_rr_bmask, 0,
2563                                 sizeof(*phba->fcf.fcf_rr_bmask));
2564                         /* fcfs_at_this_priority_level = 1; */
2565                         phba->fcf.eligible_fcf_cnt = 1;
2566                 } else
2567                         /* fcfs_at_this_priority_level++; */
2568                         phba->fcf.eligible_fcf_cnt++;
2569                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2570                                 new_fcf_pri->fcf_rec.fcf_index);
2571                 goto out;
2572         }
2573
2574         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
2575                                 &phba->fcf.fcf_pri_list, list) {
2576                 if (new_fcf_pri->fcf_rec.priority <=
2577                                 fcf_pri->fcf_rec.priority) {
2578                         if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list)
2579                                 list_add(&new_fcf_pri->list,
2580                                                 &phba->fcf.fcf_pri_list);
2581                         else
2582                                 list_add(&new_fcf_pri->list,
2583                                          &((struct lpfc_fcf_pri *)
2584                                         fcf_pri->list.prev)->list);
2585                         ret = 0;
2586                         goto out;
2587                 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list
2588                         || new_fcf_pri->fcf_rec.priority <
2589                                 next_fcf_pri->fcf_rec.priority) {
2590                         list_add(&new_fcf_pri->list, &fcf_pri->list);
2591                         ret = 0;
2592                         goto out;
2593                 }
2594                 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority)
2595                         continue;
2596
2597         }
2598         ret = 1;
2599 out:
2600         /* we use = instead of |= to clear the FLOGI_FAILED flag. */
2601         new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST;
2602         spin_unlock_irq(&phba->hbalock);
2603         return ret;
2604 }
2605
2606 /**
2607  * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
2608  * @phba: pointer to lpfc hba data structure.
2609  * @mboxq: pointer to mailbox object.
2610  *
2611  * This function iterates through all the fcf records available in
2612  * HBA and chooses the optimal FCF record for discovery. After finding
2613  * the FCF for discovery it registers the FCF record and kicks start
2614  * discovery.
2615  * If FCF_IN_USE flag is set in currently used FCF, the routine tries to
2616  * use an FCF record which matches fabric name and mac address of the
2617  * currently used FCF record.
2618  * If the driver supports only one FCF, it will try to use the FCF record
2619  * used by BOOT_BIOS.
2620  */
2621 void
2622 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2623 {
2624         struct fcf_record *new_fcf_record;
2625         uint32_t boot_flag, addr_mode;
2626         uint16_t fcf_index, next_fcf_index;
2627         struct lpfc_fcf_rec *fcf_rec = NULL;
2628         uint16_t vlan_id = LPFC_FCOE_NULL_VID;
2629         bool select_new_fcf;
2630         int rc;
2631
2632         /* If there is pending FCoE event restart FCF table scan */
2633         if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) {
2634                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2635                 return;
2636         }
2637
2638         /* Parse the FCF record from the non-embedded mailbox command */
2639         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2640                                                       &next_fcf_index);
2641         if (!new_fcf_record) {
2642                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2643                                 "2765 Mailbox command READ_FCF_RECORD "
2644                                 "failed to retrieve a FCF record.\n");
2645                 /* Let next new FCF event trigger fast failover */
2646                 clear_bit(FCF_TS_INPROG, &phba->hba_flag);
2647                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2648                 return;
2649         }
2650
2651         /* Check the FCF record against the connection list */
2652         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2653                                       &addr_mode, &vlan_id);
2654
2655         /* Log the FCF record information if turned on */
2656         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2657                                       next_fcf_index);
2658
2659         /*
2660          * If the fcf record does not match with connect list entries
2661          * read the next entry; otherwise, this is an eligible FCF
2662          * record for roundrobin FCF failover.
2663          */
2664         if (!rc) {
2665                 lpfc_sli4_fcf_pri_list_del(phba,
2666                                         bf_get(lpfc_fcf_record_fcf_index,
2667                                                new_fcf_record));
2668                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2669                                 "2781 FCF (x%x) failed connection "
2670                                 "list check: (x%x/x%x/%x)\n",
2671                                 bf_get(lpfc_fcf_record_fcf_index,
2672                                        new_fcf_record),
2673                                 bf_get(lpfc_fcf_record_fcf_avail,
2674                                        new_fcf_record),
2675                                 bf_get(lpfc_fcf_record_fcf_valid,
2676                                        new_fcf_record),
2677                                 bf_get(lpfc_fcf_record_fcf_sol,
2678                                        new_fcf_record));
2679                 if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
2680                     lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2681                     new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
2682                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) !=
2683                             phba->fcf.current_rec.fcf_indx) {
2684                                 lpfc_printf_log(phba, KERN_ERR,
2685                                                 LOG_TRACE_EVENT,
2686                                         "2862 FCF (x%x) matches property "
2687                                         "of in-use FCF (x%x)\n",
2688                                         bf_get(lpfc_fcf_record_fcf_index,
2689                                                new_fcf_record),
2690                                         phba->fcf.current_rec.fcf_indx);
2691                                 goto read_next_fcf;
2692                         }
2693                         /*
2694                          * In case the current in-use FCF record becomes
2695                          * invalid/unavailable during FCF discovery that
2696                          * was not triggered by fast FCF failover process,
2697                          * treat it as fast FCF failover.
2698                          */
2699                         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
2700                             !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2701                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2702                                                 "2835 Invalid in-use FCF "
2703                                                 "(x%x), enter FCF failover "
2704                                                 "table scan.\n",
2705                                                 phba->fcf.current_rec.fcf_indx);
2706                                 spin_lock_irq(&phba->hbalock);
2707                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2708                                 spin_unlock_irq(&phba->hbalock);
2709                                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2710                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2711                                                 LPFC_FCOE_FCF_GET_FIRST);
2712                                 return;
2713                         }
2714                 }
2715                 goto read_next_fcf;
2716         } else {
2717                 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2718                 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index,
2719                                                         new_fcf_record);
2720                 if (rc)
2721                         goto read_next_fcf;
2722         }
2723
2724         /*
2725          * If this is not the first FCF discovery of the HBA, use last
2726          * FCF record for the discovery. The condition that a rescan
2727          * matches the in-use FCF record: fabric name, switch name, mac
2728          * address, and vlan_id.
2729          */
2730         spin_lock_irq(&phba->hbalock);
2731         if (phba->fcf.fcf_flag & FCF_IN_USE) {
2732                 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2733                         lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2734                     new_fcf_record, vlan_id)) {
2735                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) ==
2736                             phba->fcf.current_rec.fcf_indx) {
2737                                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2738                                 if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
2739                                         /* Stop FCF redisc wait timer */
2740                                         __lpfc_sli4_stop_fcf_redisc_wait_timer(
2741                                                                         phba);
2742                                 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2743                                         /* Fast failover, mark completed */
2744                                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2745                                 spin_unlock_irq(&phba->hbalock);
2746                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2747                                                 "2836 New FCF matches in-use "
2748                                                 "FCF (x%x), port_state:x%x, "
2749                                                 "fc_flag:x%lx\n",
2750                                                 phba->fcf.current_rec.fcf_indx,
2751                                                 phba->pport->port_state,
2752                                                 phba->pport->fc_flag);
2753                                 goto out;
2754                         } else
2755                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2756                                         "2863 New FCF (x%x) matches "
2757                                         "property of in-use FCF (x%x)\n",
2758                                         bf_get(lpfc_fcf_record_fcf_index,
2759                                                new_fcf_record),
2760                                         phba->fcf.current_rec.fcf_indx);
2761                 }
2762                 /*
2763                  * Read next FCF record from HBA searching for the matching
2764                  * with in-use record only if not during the fast failover
2765                  * period. In case of fast failover period, it shall try to
2766                  * determine whether the FCF record just read should be the
2767                  * next candidate.
2768                  */
2769                 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2770                         spin_unlock_irq(&phba->hbalock);
2771                         goto read_next_fcf;
2772                 }
2773         }
2774         /*
2775          * Update on failover FCF record only if it's in FCF fast-failover
2776          * period; otherwise, update on current FCF record.
2777          */
2778         if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2779                 fcf_rec = &phba->fcf.failover_rec;
2780         else
2781                 fcf_rec = &phba->fcf.current_rec;
2782
2783         if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
2784                 /*
2785                  * If the driver FCF record does not have boot flag
2786                  * set and new hba fcf record has boot flag set, use
2787                  * the new hba fcf record.
2788                  */
2789                 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
2790                         /* Choose this FCF record */
2791                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2792                                         "2837 Update current FCF record "
2793                                         "(x%x) with new FCF record (x%x)\n",
2794                                         fcf_rec->fcf_indx,
2795                                         bf_get(lpfc_fcf_record_fcf_index,
2796                                         new_fcf_record));
2797                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2798                                         addr_mode, vlan_id, BOOT_ENABLE);
2799                         spin_unlock_irq(&phba->hbalock);
2800                         goto read_next_fcf;
2801                 }
2802                 /*
2803                  * If the driver FCF record has boot flag set and the
2804                  * new hba FCF record does not have boot flag, read
2805                  * the next FCF record.
2806                  */
2807                 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
2808                         spin_unlock_irq(&phba->hbalock);
2809                         goto read_next_fcf;
2810                 }
2811                 /*
2812                  * If the new hba FCF record has lower priority value
2813                  * than the driver FCF record, use the new record.
2814                  */
2815                 if (new_fcf_record->fip_priority < fcf_rec->priority) {
2816                         /* Choose the new FCF record with lower priority */
2817                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2818                                         "2838 Update current FCF record "
2819                                         "(x%x) with new FCF record (x%x)\n",
2820                                         fcf_rec->fcf_indx,
2821                                         bf_get(lpfc_fcf_record_fcf_index,
2822                                                new_fcf_record));
2823                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2824                                         addr_mode, vlan_id, 0);
2825                         /* Reset running random FCF selection count */
2826                         phba->fcf.eligible_fcf_cnt = 1;
2827                 } else if (new_fcf_record->fip_priority == fcf_rec->priority) {
2828                         /* Update running random FCF selection count */
2829                         phba->fcf.eligible_fcf_cnt++;
2830                         select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
2831                                                 phba->fcf.eligible_fcf_cnt);
2832                         if (select_new_fcf) {
2833                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2834                                         "2839 Update current FCF record "
2835                                         "(x%x) with new FCF record (x%x)\n",
2836                                         fcf_rec->fcf_indx,
2837                                         bf_get(lpfc_fcf_record_fcf_index,
2838                                                new_fcf_record));
2839                                 /* Choose the new FCF by random selection */
2840                                 __lpfc_update_fcf_record(phba, fcf_rec,
2841                                                          new_fcf_record,
2842                                                          addr_mode, vlan_id, 0);
2843                         }
2844                 }
2845                 spin_unlock_irq(&phba->hbalock);
2846                 goto read_next_fcf;
2847         }
2848         /*
2849          * This is the first suitable FCF record, choose this record for
2850          * initial best-fit FCF.
2851          */
2852         if (fcf_rec) {
2853                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2854                                 "2840 Update initial FCF candidate "
2855                                 "with FCF (x%x)\n",
2856                                 bf_get(lpfc_fcf_record_fcf_index,
2857                                        new_fcf_record));
2858                 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2859                                          addr_mode, vlan_id, (boot_flag ?
2860                                          BOOT_ENABLE : 0));
2861                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2862                 /* Setup initial running random FCF selection count */
2863                 phba->fcf.eligible_fcf_cnt = 1;
2864         }
2865         spin_unlock_irq(&phba->hbalock);
2866         goto read_next_fcf;
2867
2868 read_next_fcf:
2869         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2870         if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
2871                 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
2872                         /*
2873                          * Case of FCF fast failover scan
2874                          */
2875
2876                         /*
2877                          * It has not found any suitable FCF record, cancel
2878                          * FCF scan inprogress, and do nothing
2879                          */
2880                         if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
2881                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2882                                                "2782 No suitable FCF found: "
2883                                                "(x%x/x%x)\n",
2884                                                phba->fcoe_eventtag_at_fcf_scan,
2885                                                bf_get(lpfc_fcf_record_fcf_index,
2886                                                       new_fcf_record));
2887                                 if (test_bit(HBA_DEVLOSS_TMO,
2888                                              &phba->hba_flag)) {
2889                                         clear_bit(FCF_TS_INPROG,
2890                                                   &phba->hba_flag);
2891                                         /* Unregister in-use FCF and rescan */
2892                                         lpfc_printf_log(phba, KERN_INFO,
2893                                                         LOG_FIP,
2894                                                         "2864 On devloss tmo "
2895                                                         "unreg in-use FCF and "
2896                                                         "rescan FCF table\n");
2897                                         lpfc_unregister_fcf_rescan(phba);
2898                                         return;
2899                                 }
2900                                 /*
2901                                  * Let next new FCF event trigger fast failover
2902                                  */
2903                                 clear_bit(FCF_TS_INPROG, &phba->hba_flag);
2904                                 return;
2905                         }
2906                         /*
2907                          * It has found a suitable FCF record that is not
2908                          * the same as in-use FCF record, unregister the
2909                          * in-use FCF record, replace the in-use FCF record
2910                          * with the new FCF record, mark FCF fast failover
2911                          * completed, and then start register the new FCF
2912                          * record.
2913                          */
2914
2915                         /* Unregister the current in-use FCF record */
2916                         lpfc_unregister_fcf(phba);
2917
2918                         /* Replace in-use record with the new record */
2919                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2920                                         "2842 Replace in-use FCF (x%x) "
2921                                         "with failover FCF (x%x)\n",
2922                                         phba->fcf.current_rec.fcf_indx,
2923                                         phba->fcf.failover_rec.fcf_indx);
2924                         memcpy(&phba->fcf.current_rec,
2925                                &phba->fcf.failover_rec,
2926                                sizeof(struct lpfc_fcf_rec));
2927                         /*
2928                          * Mark the fast FCF failover rediscovery completed
2929                          * and the start of the first round of the roundrobin
2930                          * FCF failover.
2931                          */
2932                         spin_lock_irq(&phba->hbalock);
2933                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2934                         spin_unlock_irq(&phba->hbalock);
2935                         /* Register to the new FCF record */
2936                         lpfc_register_fcf(phba);
2937                 } else {
2938                         /*
2939                          * In case of transaction period to fast FCF failover,
2940                          * do nothing when search to the end of the FCF table.
2941                          */
2942                         if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
2943                             (phba->fcf.fcf_flag & FCF_REDISC_PEND))
2944                                 return;
2945
2946                         if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2947                                 phba->fcf.fcf_flag & FCF_IN_USE) {
2948                                 /*
2949                                  * In case the current in-use FCF record no
2950                                  * longer existed during FCF discovery that
2951                                  * was not triggered by fast FCF failover
2952                                  * process, treat it as fast FCF failover.
2953                                  */
2954                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2955                                                 "2841 In-use FCF record (x%x) "
2956                                                 "not reported, entering fast "
2957                                                 "FCF failover mode scanning.\n",
2958                                                 phba->fcf.current_rec.fcf_indx);
2959                                 spin_lock_irq(&phba->hbalock);
2960                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2961                                 spin_unlock_irq(&phba->hbalock);
2962                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2963                                                 LPFC_FCOE_FCF_GET_FIRST);
2964                                 return;
2965                         }
2966                         /* Register to the new FCF record */
2967                         lpfc_register_fcf(phba);
2968                 }
2969         } else
2970                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
2971         return;
2972
2973 out:
2974         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2975         lpfc_register_fcf(phba);
2976
2977         return;
2978 }
2979
2980 /**
2981  * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler
2982  * @phba: pointer to lpfc hba data structure.
2983  * @mboxq: pointer to mailbox object.
2984  *
2985  * This is the callback function for FLOGI failure roundrobin FCF failover
2986  * read FCF record mailbox command from the eligible FCF record bmask for
2987  * performing the failover. If the FCF read back is not valid/available, it
2988  * fails through to retrying FLOGI to the currently registered FCF again.
2989  * Otherwise, if the FCF read back is valid and available, it will set the
2990  * newly read FCF record to the failover FCF record, unregister currently
2991  * registered FCF record, copy the failover FCF record to the current
2992  * FCF record, and then register the current FCF record before proceeding
2993  * to trying FLOGI on the new failover FCF.
2994  */
2995 void
2996 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2997 {
2998         struct fcf_record *new_fcf_record;
2999         uint32_t boot_flag, addr_mode;
3000         uint16_t next_fcf_index, fcf_index;
3001         uint16_t current_fcf_index;
3002         uint16_t vlan_id = LPFC_FCOE_NULL_VID;
3003         int rc;
3004
3005         /* If link state is not up, stop the roundrobin failover process */
3006         if (phba->link_state < LPFC_LINK_UP) {
3007                 spin_lock_irq(&phba->hbalock);
3008                 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
3009                 spin_unlock_irq(&phba->hbalock);
3010                 clear_bit(FCF_RR_INPROG, &phba->hba_flag);
3011                 goto out;
3012         }
3013
3014         /* Parse the FCF record from the non-embedded mailbox command */
3015         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
3016                                                       &next_fcf_index);
3017         if (!new_fcf_record) {
3018                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
3019                                 "2766 Mailbox command READ_FCF_RECORD "
3020                                 "failed to retrieve a FCF record. "
3021                                 "hba_flg x%lx fcf_flg x%x\n", phba->hba_flag,
3022                                 phba->fcf.fcf_flag);
3023                 lpfc_unregister_fcf_rescan(phba);
3024                 goto out;
3025         }
3026
3027         /* Get the needed parameters from FCF record */
3028         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
3029                                       &addr_mode, &vlan_id);
3030
3031         /* Log the FCF record information if turned on */
3032         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
3033                                       next_fcf_index);
3034
3035         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
3036         if (!rc) {
3037                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3038                                 "2848 Remove ineligible FCF (x%x) from "
3039                                 "from roundrobin bmask\n", fcf_index);
3040                 /* Clear roundrobin bmask bit for ineligible FCF */
3041                 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index);
3042                 /* Perform next round of roundrobin FCF failover */
3043                 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
3044                 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index);
3045                 if (rc)
3046                         goto out;
3047                 goto error_out;
3048         }
3049
3050         if (fcf_index == phba->fcf.current_rec.fcf_indx) {
3051                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3052                                 "2760 Perform FLOGI roundrobin FCF failover: "
3053                                 "FCF (x%x) back to FCF (x%x)\n",
3054                                 phba->fcf.current_rec.fcf_indx, fcf_index);
3055                 /* Wait 500 ms before retrying FLOGI to current FCF */
3056                 msleep(500);
3057                 lpfc_issue_init_vfi(phba->pport);
3058                 goto out;
3059         }
3060
3061         /* Upload new FCF record to the failover FCF record */
3062         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3063                         "2834 Update current FCF (x%x) with new FCF (x%x)\n",
3064                         phba->fcf.failover_rec.fcf_indx, fcf_index);
3065         spin_lock_irq(&phba->hbalock);
3066         __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
3067                                  new_fcf_record, addr_mode, vlan_id,
3068                                  (boot_flag ? BOOT_ENABLE : 0));
3069         spin_unlock_irq(&phba->hbalock);
3070
3071         current_fcf_index = phba->fcf.current_rec.fcf_indx;
3072
3073         /* Unregister the current in-use FCF record */
3074         lpfc_unregister_fcf(phba);
3075
3076         /* Replace in-use record with the new record */
3077         memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
3078                sizeof(struct lpfc_fcf_rec));
3079
3080         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3081                         "2783 Perform FLOGI roundrobin FCF failover: FCF "
3082                         "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index);
3083
3084 error_out:
3085         lpfc_register_fcf(phba);
3086 out:
3087         lpfc_sli4_mbox_cmd_free(phba, mboxq);
3088 }
3089
3090 /**
3091  * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
3092  * @phba: pointer to lpfc hba data structure.
3093  * @mboxq: pointer to mailbox object.
3094  *
3095  * This is the callback function of read FCF record mailbox command for
3096  * updating the eligible FCF bmask for FLOGI failure roundrobin FCF
3097  * failover when a new FCF event happened. If the FCF read back is
3098  * valid/available and it passes the connection list check, it updates
3099  * the bmask for the eligible FCF record for roundrobin failover.
3100  */
3101 void
3102 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3103 {
3104         struct fcf_record *new_fcf_record;
3105         uint32_t boot_flag, addr_mode;
3106         uint16_t fcf_index, next_fcf_index;
3107         uint16_t vlan_id =  LPFC_FCOE_NULL_VID;
3108         int rc;
3109
3110         /* If link state is not up, no need to proceed */
3111         if (phba->link_state < LPFC_LINK_UP)
3112                 goto out;
3113
3114         /* If FCF discovery period is over, no need to proceed */
3115         if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
3116                 goto out;
3117
3118         /* Parse the FCF record from the non-embedded mailbox command */
3119         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
3120                                                       &next_fcf_index);
3121         if (!new_fcf_record) {
3122                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3123                                 "2767 Mailbox command READ_FCF_RECORD "
3124                                 "failed to retrieve a FCF record.\n");
3125                 goto out;
3126         }
3127
3128         /* Check the connection list for eligibility */
3129         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
3130                                       &addr_mode, &vlan_id);
3131
3132         /* Log the FCF record information if turned on */
3133         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
3134                                       next_fcf_index);
3135
3136         if (!rc)
3137                 goto out;
3138
3139         /* Update the eligible FCF record index bmask */
3140         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
3141
3142         rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record);
3143
3144 out:
3145         lpfc_sli4_mbox_cmd_free(phba, mboxq);
3146 }
3147
3148 /**
3149  * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command.
3150  * @phba: pointer to lpfc hba data structure.
3151  * @mboxq: pointer to mailbox data structure.
3152  *
3153  * This function handles completion of init vfi mailbox command.
3154  */
3155 static void
3156 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3157 {
3158         struct lpfc_vport *vport = mboxq->vport;
3159
3160         /*
3161          * VFI not supported on interface type 0, just do the flogi
3162          * Also continue if the VFI is in use - just use the same one.
3163          */
3164         if (mboxq->u.mb.mbxStatus &&
3165             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
3166                         LPFC_SLI_INTF_IF_TYPE_0) &&
3167             mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
3168                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3169                                  "2891 Init VFI mailbox failed 0x%x\n",
3170                                  mboxq->u.mb.mbxStatus);
3171                 mempool_free(mboxq, phba->mbox_mem_pool);
3172                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3173                 return;
3174         }
3175
3176         lpfc_initial_flogi(vport);
3177         mempool_free(mboxq, phba->mbox_mem_pool);
3178         return;
3179 }
3180
3181 /**
3182  * lpfc_issue_init_vfi - Issue init_vfi mailbox command.
3183  * @vport: pointer to lpfc_vport data structure.
3184  *
3185  * This function issue a init_vfi mailbox command to initialize the VFI and
3186  * VPI for the physical port.
3187  */
3188 void
3189 lpfc_issue_init_vfi(struct lpfc_vport *vport)
3190 {
3191         LPFC_MBOXQ_t *mboxq;
3192         int rc;
3193         struct lpfc_hba *phba = vport->phba;
3194
3195         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3196         if (!mboxq) {
3197                 lpfc_printf_vlog(vport, KERN_ERR,
3198                         LOG_TRACE_EVENT, "2892 Failed to allocate "
3199                         "init_vfi mailbox\n");
3200                 return;
3201         }
3202         lpfc_init_vfi(mboxq, vport);
3203         mboxq->mbox_cmpl = lpfc_init_vfi_cmpl;
3204         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
3205         if (rc == MBX_NOT_FINISHED) {
3206                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3207                                  "2893 Failed to issue init_vfi mailbox\n");
3208                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
3209         }
3210 }
3211
3212 /**
3213  * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
3214  * @phba: pointer to lpfc hba data structure.
3215  * @mboxq: pointer to mailbox data structure.
3216  *
3217  * This function handles completion of init vpi mailbox command.
3218  */
3219 void
3220 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3221 {
3222         struct lpfc_vport *vport = mboxq->vport;
3223         struct lpfc_nodelist *ndlp;
3224
3225         if (mboxq->u.mb.mbxStatus) {
3226                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3227                                  "2609 Init VPI mailbox failed 0x%x\n",
3228                                  mboxq->u.mb.mbxStatus);
3229                 mempool_free(mboxq, phba->mbox_mem_pool);
3230                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3231                 return;
3232         }
3233         clear_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag);
3234
3235         /* If this port is physical port or FDISC is done, do reg_vpi */
3236         if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
3237                         ndlp = lpfc_findnode_did(vport, Fabric_DID);
3238                         if (!ndlp)
3239                                 lpfc_printf_vlog(vport, KERN_ERR,
3240                                         LOG_TRACE_EVENT,
3241                                         "2731 Cannot find fabric "
3242                                         "controller node\n");
3243                         else
3244                                 lpfc_register_new_vport(phba, vport, ndlp);
3245                         mempool_free(mboxq, phba->mbox_mem_pool);
3246                         return;
3247         }
3248
3249         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
3250                 lpfc_initial_fdisc(vport);
3251         else {
3252                 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
3253                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3254                                  "2606 No NPIV Fabric support\n");
3255         }
3256         mempool_free(mboxq, phba->mbox_mem_pool);
3257         return;
3258 }
3259
3260 /**
3261  * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
3262  * @vport: pointer to lpfc_vport data structure.
3263  *
3264  * This function issue a init_vpi mailbox command to initialize
3265  * VPI for the vport.
3266  */
3267 void
3268 lpfc_issue_init_vpi(struct lpfc_vport *vport)
3269 {
3270         LPFC_MBOXQ_t *mboxq;
3271         int rc, vpi;
3272
3273         if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) {
3274                 vpi = lpfc_alloc_vpi(vport->phba);
3275                 if (!vpi) {
3276                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3277                                          "3303 Failed to obtain vport vpi\n");
3278                         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3279                         return;
3280                 }
3281                 vport->vpi = vpi;
3282         }
3283
3284         mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
3285         if (!mboxq) {
3286                 lpfc_printf_vlog(vport, KERN_ERR,
3287                         LOG_TRACE_EVENT, "2607 Failed to allocate "
3288                         "init_vpi mailbox\n");
3289                 return;
3290         }
3291         lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
3292         mboxq->vport = vport;
3293         mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
3294         rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
3295         if (rc == MBX_NOT_FINISHED) {
3296                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3297                                  "2608 Failed to issue init_vpi mailbox\n");
3298                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
3299         }
3300 }
3301
3302 /**
3303  * lpfc_start_fdiscs - send fdiscs for each vports on this port.
3304  * @phba: pointer to lpfc hba data structure.
3305  *
3306  * This function loops through the list of vports on the @phba and issues an
3307  * FDISC if possible.
3308  */
3309 void
3310 lpfc_start_fdiscs(struct lpfc_hba *phba)
3311 {
3312         struct lpfc_vport **vports;
3313         int i;
3314
3315         vports = lpfc_create_vport_work_array(phba);
3316         if (vports != NULL) {
3317                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3318                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
3319                                 continue;
3320                         /* There are no vpi for this vport */
3321                         if (vports[i]->vpi > phba->max_vpi) {
3322                                 lpfc_vport_set_state(vports[i],
3323                                                      FC_VPORT_FAILED);
3324                                 continue;
3325                         }
3326                         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3327                                 lpfc_vport_set_state(vports[i],
3328                                                      FC_VPORT_LINKDOWN);
3329                                 continue;
3330                         }
3331                         if (test_bit(FC_VPORT_NEEDS_INIT_VPI,
3332                                      &vports[i]->fc_flag)) {
3333                                 lpfc_issue_init_vpi(vports[i]);
3334                                 continue;
3335                         }
3336                         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
3337                                 lpfc_initial_fdisc(vports[i]);
3338                         else {
3339                                 lpfc_vport_set_state(vports[i],
3340                                                      FC_VPORT_NO_FABRIC_SUPP);
3341                                 lpfc_printf_vlog(vports[i], KERN_ERR,
3342                                                  LOG_TRACE_EVENT,
3343                                                  "0259 No NPIV "
3344                                                  "Fabric support\n");
3345                         }
3346                 }
3347         }
3348         lpfc_destroy_vport_work_array(phba, vports);
3349 }
3350
3351 void
3352 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3353 {
3354         struct lpfc_vport *vport = mboxq->vport;
3355         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3356
3357         /*
3358          * VFI not supported for interface type 0, so ignore any mailbox
3359          * error (except VFI in use) and continue with the discovery.
3360          */
3361         if (mboxq->u.mb.mbxStatus &&
3362             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
3363                         LPFC_SLI_INTF_IF_TYPE_0) &&
3364             mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
3365                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3366                                  "2018 REG_VFI mbxStatus error x%x "
3367                                  "HBA state x%x\n",
3368                                  mboxq->u.mb.mbxStatus, vport->port_state);
3369                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3370                         /* FLOGI failed, use loop map to make discovery list */
3371                         lpfc_disc_list_loopmap(vport);
3372                         /* Start discovery */
3373                         lpfc_disc_start(vport);
3374                         goto out_free_mem;
3375                 }
3376                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3377                 goto out_free_mem;
3378         }
3379
3380         /* If the VFI is already registered, there is nothing else to do
3381          * Unless this was a VFI update and we are in PT2PT mode, then
3382          * we should drop through to set the port state to ready.
3383          */
3384         if (test_bit(FC_VFI_REGISTERED, &vport->fc_flag))
3385                 if (!(phba->sli_rev == LPFC_SLI_REV4 &&
3386                       test_bit(FC_PT2PT, &vport->fc_flag)))
3387                         goto out_free_mem;
3388
3389         /* The VPI is implicitly registered when the VFI is registered */
3390         set_bit(FC_VFI_REGISTERED, &vport->fc_flag);
3391         clear_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
3392         clear_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag);
3393         spin_lock_irq(shost->host_lock);
3394         vport->vpi_state |= LPFC_VPI_REGISTERED;
3395         spin_unlock_irq(shost->host_lock);
3396
3397         /* In case SLI4 FC loopback test, we are ready */
3398         if ((phba->sli_rev == LPFC_SLI_REV4) &&
3399             (phba->link_flag & LS_LOOPBACK_MODE)) {
3400                 phba->link_state = LPFC_HBA_READY;
3401                 goto out_free_mem;
3402         }
3403
3404         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3405                          "3313 cmpl reg vfi  port_state:%x fc_flag:%lx "
3406                          "myDid:%x alpacnt:%d LinkState:%x topology:%x\n",
3407                          vport->port_state, vport->fc_flag, vport->fc_myDID,
3408                          vport->phba->alpa_map[0],
3409                          phba->link_state, phba->fc_topology);
3410
3411         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3412                 /*
3413                  * For private loop or for NPort pt2pt,
3414                  * just start discovery and we are done.
3415                  */
3416                 if (test_bit(FC_PT2PT, &vport->fc_flag) ||
3417                     (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
3418                     !test_bit(FC_PUBLIC_LOOP, &vport->fc_flag))) {
3419
3420                         /* Use loop map to make discovery list */
3421                         lpfc_disc_list_loopmap(vport);
3422                         /* Start discovery */
3423                         if (test_bit(FC_PT2PT, &vport->fc_flag))
3424                                 vport->port_state = LPFC_VPORT_READY;
3425                         else
3426                                 lpfc_disc_start(vport);
3427                 } else {
3428                         lpfc_start_fdiscs(phba);
3429                         lpfc_do_scr_ns_plogi(phba, vport);
3430                 }
3431         }
3432
3433 out_free_mem:
3434         lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED);
3435 }
3436
3437 static void
3438 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3439 {
3440         MAILBOX_t *mb = &pmb->u.mb;
3441         struct lpfc_dmabuf *mp = pmb->ctx_buf;
3442         struct lpfc_vport  *vport = pmb->vport;
3443         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3444         struct serv_parm *sp = &vport->fc_sparam;
3445         uint32_t ed_tov;
3446
3447         /* Check for error */
3448         if (mb->mbxStatus) {
3449                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
3450                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3451                                  "0319 READ_SPARAM mbxStatus error x%x "
3452                                  "hba state x%x>\n",
3453                                  mb->mbxStatus, vport->port_state);
3454                 lpfc_linkdown(phba);
3455                 goto out;
3456         }
3457
3458         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
3459                sizeof (struct serv_parm));
3460
3461         ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
3462         if (sp->cmn.edtovResolution)    /* E_D_TOV ticks are in nanoseconds */
3463                 ed_tov = (ed_tov + 999999) / 1000000;
3464
3465         phba->fc_edtov = ed_tov;
3466         phba->fc_ratov = (2 * ed_tov) / 1000;
3467         if (phba->fc_ratov < FF_DEF_RATOV) {
3468                 /* RA_TOV should be atleast 10sec for initial flogi */
3469                 phba->fc_ratov = FF_DEF_RATOV;
3470         }
3471
3472         lpfc_update_vport_wwn(vport);
3473         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
3474         if (vport->port_type == LPFC_PHYSICAL_PORT) {
3475                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
3476                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
3477         }
3478
3479         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
3480
3481         /* Check if sending the FLOGI is being deferred to after we get
3482          * up to date CSPs from MBX_READ_SPARAM.
3483          */
3484         if (test_bit(HBA_DEFER_FLOGI, &phba->hba_flag)) {
3485                 lpfc_initial_flogi(vport);
3486                 clear_bit(HBA_DEFER_FLOGI, &phba->hba_flag);
3487         }
3488         return;
3489
3490 out:
3491         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
3492         lpfc_issue_clear_la(phba, vport);
3493 }
3494
3495 static void
3496 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
3497 {
3498         struct lpfc_vport *vport = phba->pport;
3499         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
3500         int i;
3501         int rc;
3502         struct fcf_record *fcf_record;
3503         unsigned long iflags;
3504
3505         spin_lock_irqsave(&phba->hbalock, iflags);
3506         phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la);
3507
3508         if (!test_bit(HBA_FCOE_MODE, &phba->hba_flag)) {
3509                 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) {
3510                 case LPFC_LINK_SPEED_1GHZ:
3511                 case LPFC_LINK_SPEED_2GHZ:
3512                 case LPFC_LINK_SPEED_4GHZ:
3513                 case LPFC_LINK_SPEED_8GHZ:
3514                 case LPFC_LINK_SPEED_10GHZ:
3515                 case LPFC_LINK_SPEED_16GHZ:
3516                 case LPFC_LINK_SPEED_32GHZ:
3517                 case LPFC_LINK_SPEED_64GHZ:
3518                 case LPFC_LINK_SPEED_128GHZ:
3519                 case LPFC_LINK_SPEED_256GHZ:
3520                         break;
3521                 default:
3522                         phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN;
3523                         break;
3524                 }
3525         }
3526
3527         if (phba->fc_topology &&
3528             phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) {
3529                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
3530                                 "3314 Toplogy changed was 0x%x is 0x%x\n",
3531                                 phba->fc_topology,
3532                                 bf_get(lpfc_mbx_read_top_topology, la));
3533                 phba->fc_topology_changed = 1;
3534         }
3535
3536         phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la);
3537         phba->link_flag &= ~(LS_NPIV_FAB_SUPPORTED | LS_CT_VEN_RPA);
3538
3539         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3540                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
3541
3542                 /* if npiv is enabled and this adapter supports npiv log
3543                  * a message that npiv is not supported in this topology
3544                  */
3545                 if (phba->cfg_enable_npiv && phba->max_vpi)
3546                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3547                                 "1309 Link Up Event npiv not supported in loop "
3548                                 "topology\n");
3549                                 /* Get Loop Map information */
3550                 if (bf_get(lpfc_mbx_read_top_il, la))
3551                         set_bit(FC_LBIT, &vport->fc_flag);
3552
3553                 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la);
3554                 i = la->lilpBde64.tus.f.bdeSize;
3555
3556                 if (i == 0) {
3557                         phba->alpa_map[0] = 0;
3558                 } else {
3559                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
3560                                 int numalpa, j, k;
3561                                 union {
3562                                         uint8_t pamap[16];
3563                                         struct {
3564                                                 uint32_t wd1;
3565                                                 uint32_t wd2;
3566                                                 uint32_t wd3;
3567                                                 uint32_t wd4;
3568                                         } pa;
3569                                 } un;
3570                                 numalpa = phba->alpa_map[0];
3571                                 j = 0;
3572                                 while (j < numalpa) {
3573                                         memset(un.pamap, 0, 16);
3574                                         for (k = 1; j < numalpa; k++) {
3575                                                 un.pamap[k - 1] =
3576                                                         phba->alpa_map[j + 1];
3577                                                 j++;
3578                                                 if (k == 16)
3579                                                         break;
3580                                         }
3581                                         /* Link Up Event ALPA map */
3582                                         lpfc_printf_log(phba,
3583                                                         KERN_WARNING,
3584                                                         LOG_LINK_EVENT,
3585                                                         "1304 Link Up Event "
3586                                                         "ALPA map Data: x%x "
3587                                                         "x%x x%x x%x\n",
3588                                                         un.pa.wd1, un.pa.wd2,
3589                                                         un.pa.wd3, un.pa.wd4);
3590                                 }
3591                         }
3592                 }
3593         } else {
3594                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
3595                         if (phba->max_vpi && phba->cfg_enable_npiv &&
3596                            (phba->sli_rev >= LPFC_SLI_REV3))
3597                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
3598                 }
3599                 vport->fc_myDID = phba->fc_pref_DID;
3600                 set_bit(FC_LBIT, &vport->fc_flag);
3601         }
3602         spin_unlock_irqrestore(&phba->hbalock, iflags);
3603
3604         lpfc_linkup(phba);
3605         sparam_mbox = NULL;
3606
3607         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3608         if (!sparam_mbox)
3609                 goto out;
3610
3611         rc = lpfc_read_sparam(phba, sparam_mbox, 0);
3612         if (rc) {
3613                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3614                 goto out;
3615         }
3616         sparam_mbox->vport = vport;
3617         sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
3618         rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
3619         if (rc == MBX_NOT_FINISHED) {
3620                 lpfc_mbox_rsrc_cleanup(phba, sparam_mbox, MBOX_THD_UNLOCKED);
3621                 goto out;
3622         }
3623
3624         if (!test_bit(HBA_FCOE_MODE, &phba->hba_flag)) {
3625                 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3626                 if (!cfglink_mbox)
3627                         goto out;
3628                 vport->port_state = LPFC_LOCAL_CFG_LINK;
3629                 lpfc_config_link(phba, cfglink_mbox);
3630                 cfglink_mbox->vport = vport;
3631                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
3632                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
3633                 if (rc == MBX_NOT_FINISHED) {
3634                         mempool_free(cfglink_mbox, phba->mbox_mem_pool);
3635                         goto out;
3636                 }
3637         } else {
3638                 vport->port_state = LPFC_VPORT_UNKNOWN;
3639                 /*
3640                  * Add the driver's default FCF record at FCF index 0 now. This
3641                  * is phase 1 implementation that support FCF index 0 and driver
3642                  * defaults.
3643                  */
3644                 if (!test_bit(HBA_FIP_SUPPORT, &phba->hba_flag)) {
3645                         fcf_record = kzalloc(sizeof(struct fcf_record),
3646                                         GFP_KERNEL);
3647                         if (unlikely(!fcf_record)) {
3648                                 lpfc_printf_log(phba, KERN_ERR,
3649                                         LOG_TRACE_EVENT,
3650                                         "2554 Could not allocate memory for "
3651                                         "fcf record\n");
3652                                 rc = -ENODEV;
3653                                 goto out;
3654                         }
3655
3656                         lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
3657                                                 LPFC_FCOE_FCF_DEF_INDEX);
3658                         rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
3659                         if (unlikely(rc)) {
3660                                 lpfc_printf_log(phba, KERN_ERR,
3661                                         LOG_TRACE_EVENT,
3662                                         "2013 Could not manually add FCF "
3663                                         "record 0, status %d\n", rc);
3664                                 rc = -ENODEV;
3665                                 kfree(fcf_record);
3666                                 goto out;
3667                         }
3668                         kfree(fcf_record);
3669                 }
3670                 /*
3671                  * The driver is expected to do FIP/FCF. Call the port
3672                  * and get the FCF Table.
3673                  */
3674                 if (test_bit(FCF_TS_INPROG, &phba->hba_flag))
3675                         return;
3676                 /* This is the initial FCF discovery scan */
3677                 spin_lock_irqsave(&phba->hbalock, iflags);
3678                 phba->fcf.fcf_flag |= FCF_INIT_DISC;
3679                 spin_unlock_irqrestore(&phba->hbalock, iflags);
3680                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3681                                 "2778 Start FCF table scan at linkup\n");
3682                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
3683                                                      LPFC_FCOE_FCF_GET_FIRST);
3684                 if (rc) {
3685                         spin_lock_irqsave(&phba->hbalock, iflags);
3686                         phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
3687                         spin_unlock_irqrestore(&phba->hbalock, iflags);
3688                         goto out;
3689                 }
3690                 /* Reset FCF roundrobin bmask for new discovery */
3691                 lpfc_sli4_clear_fcf_rr_bmask(phba);
3692         }
3693
3694         /* Prepare for LINK up registrations */
3695         memset(phba->os_host_name, 0, sizeof(phba->os_host_name));
3696         scnprintf(phba->os_host_name, sizeof(phba->os_host_name), "%s",
3697                   init_utsname()->nodename);
3698         return;
3699 out:
3700         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3701         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3702                          "0263 Discovery Mailbox error: state: 0x%x : x%px x%px\n",
3703                          vport->port_state, sparam_mbox, cfglink_mbox);
3704         lpfc_issue_clear_la(phba, vport);
3705         return;
3706 }
3707
3708 static void
3709 lpfc_enable_la(struct lpfc_hba *phba)
3710 {
3711         uint32_t control;
3712         struct lpfc_sli *psli = &phba->sli;
3713         spin_lock_irq(&phba->hbalock);
3714         psli->sli_flag |= LPFC_PROCESS_LA;
3715         if (phba->sli_rev <= LPFC_SLI_REV3) {
3716                 control = readl(phba->HCregaddr);
3717                 control |= HC_LAINT_ENA;
3718                 writel(control, phba->HCregaddr);
3719                 readl(phba->HCregaddr); /* flush */
3720         }
3721         spin_unlock_irq(&phba->hbalock);
3722 }
3723
3724 static void
3725 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
3726 {
3727         lpfc_linkdown(phba);
3728         lpfc_enable_la(phba);
3729         lpfc_unregister_unused_fcf(phba);
3730         /* turn on Link Attention interrupts - no CLEAR_LA needed */
3731 }
3732
3733
3734 /*
3735  * This routine handles processing a READ_TOPOLOGY mailbox
3736  * command upon completion. It is setup in the LPFC_MBOXQ
3737  * as the completion routine when the command is
3738  * handed off to the SLI layer. SLI4 only.
3739  */
3740 void
3741 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3742 {
3743         struct lpfc_vport *vport = pmb->vport;
3744         struct lpfc_mbx_read_top *la;
3745         struct lpfc_sli_ring *pring;
3746         MAILBOX_t *mb = &pmb->u.mb;
3747         struct lpfc_dmabuf *mp = pmb->ctx_buf;
3748         uint8_t attn_type;
3749
3750         /* Unblock ELS traffic */
3751         pring = lpfc_phba_elsring(phba);
3752         if (pring)
3753                 pring->flag &= ~LPFC_STOP_IOCB_EVENT;
3754
3755         /* Check for error */
3756         if (mb->mbxStatus) {
3757                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3758                                 "1307 READ_LA mbox error x%x state x%x\n",
3759                                 mb->mbxStatus, vport->port_state);
3760                 lpfc_mbx_issue_link_down(phba);
3761                 phba->link_state = LPFC_HBA_ERROR;
3762                 goto lpfc_mbx_cmpl_read_topology_free_mbuf;
3763         }
3764
3765         la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
3766         attn_type = bf_get(lpfc_mbx_read_top_att_type, la);
3767
3768         memcpy(&phba->alpa_map[0], mp->virt, 128);
3769
3770         if (bf_get(lpfc_mbx_read_top_pb, la))
3771                 set_bit(FC_BYPASSED_MODE, &vport->fc_flag);
3772         else
3773                 clear_bit(FC_BYPASSED_MODE, &vport->fc_flag);
3774
3775         if (phba->fc_eventTag <= la->eventTag) {
3776                 phba->fc_stat.LinkMultiEvent++;
3777                 if (attn_type == LPFC_ATT_LINK_UP)
3778                         if (phba->fc_eventTag != 0)
3779                                 lpfc_linkdown(phba);
3780         }
3781
3782         phba->fc_eventTag = la->eventTag;
3783         phba->link_events++;
3784         if (attn_type == LPFC_ATT_LINK_UP) {
3785                 phba->fc_stat.LinkUp++;
3786                 if (phba->link_flag & LS_LOOPBACK_MODE) {
3787                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3788                                         "1306 Link Up Event in loop back mode "
3789                                         "x%x received Data: x%x x%x x%x x%x\n",
3790                                         la->eventTag, phba->fc_eventTag,
3791                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3792                                                la),
3793                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3794                                         phba->alpa_map[0]);
3795                 } else {
3796                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3797                                         "1303 Link Up Event x%x received "
3798                                         "Data: x%x x%x x%x x%x x%x\n",
3799                                         la->eventTag, phba->fc_eventTag,
3800                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3801                                                la),
3802                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3803                                         phba->alpa_map[0],
3804                                         bf_get(lpfc_mbx_read_top_fa, la));
3805                 }
3806                 lpfc_mbx_process_link_up(phba, la);
3807
3808                 if (phba->cmf_active_mode != LPFC_CFG_OFF)
3809                         lpfc_cmf_signal_init(phba);
3810
3811                 if (phba->lmt & LMT_64Gb)
3812                         lpfc_read_lds_params(phba);
3813
3814         } else if (attn_type == LPFC_ATT_LINK_DOWN ||
3815                    attn_type == LPFC_ATT_UNEXP_WWPN) {
3816                 phba->fc_stat.LinkDown++;
3817                 if (phba->link_flag & LS_LOOPBACK_MODE)
3818                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3819                                 "1308 Link Down Event in loop back mode "
3820                                 "x%x received "
3821                                 "Data: x%x x%x x%lx\n",
3822                                 la->eventTag, phba->fc_eventTag,
3823                                 phba->pport->port_state, vport->fc_flag);
3824                 else if (attn_type == LPFC_ATT_UNEXP_WWPN)
3825                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3826                                 "1313 Link Down Unexpected FA WWPN Event x%x "
3827                                 "received Data: x%x x%x x%lx x%x\n",
3828                                 la->eventTag, phba->fc_eventTag,
3829                                 phba->pport->port_state, vport->fc_flag,
3830                                 bf_get(lpfc_mbx_read_top_fa, la));
3831                 else
3832                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3833                                 "1305 Link Down Event x%x received "
3834                                 "Data: x%x x%x x%lx x%x\n",
3835                                 la->eventTag, phba->fc_eventTag,
3836                                 phba->pport->port_state, vport->fc_flag,
3837                                 bf_get(lpfc_mbx_read_top_fa, la));
3838                 lpfc_mbx_issue_link_down(phba);
3839         }
3840
3841         if ((phba->sli_rev < LPFC_SLI_REV4) &&
3842             bf_get(lpfc_mbx_read_top_fa, la))
3843                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3844                                 "1311 fa %d\n",
3845                                 bf_get(lpfc_mbx_read_top_fa, la));
3846
3847 lpfc_mbx_cmpl_read_topology_free_mbuf:
3848         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
3849 }
3850
3851 /*
3852  * This routine handles processing a REG_LOGIN mailbox
3853  * command upon completion. It is setup in the LPFC_MBOXQ
3854  * as the completion routine when the command is
3855  * handed off to the SLI layer.
3856  */
3857 void
3858 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3859 {
3860         struct lpfc_vport  *vport = pmb->vport;
3861         struct lpfc_dmabuf *mp = pmb->ctx_buf;
3862         struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
3863
3864         /* The driver calls the state machine with the pmb pointer
3865          * but wants to make sure a stale ctx_buf isn't acted on.
3866          * The ctx_buf is restored later and cleaned up.
3867          */
3868         pmb->ctx_buf = NULL;
3869         pmb->ctx_ndlp = NULL;
3870
3871         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI | LOG_NODE | LOG_DISCOVERY,
3872                          "0002 rpi:%x DID:%x flg:%lx %d x%px\n",
3873                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
3874                          kref_read(&ndlp->kref),
3875                          ndlp);
3876         clear_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag);
3877
3878         if (test_bit(NLP_IGNR_REG_CMPL, &ndlp->nlp_flag) ||
3879             ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
3880                 /* We rcvd a rscn after issuing this
3881                  * mbox reg login, we may have cycled
3882                  * back through the state and be
3883                  * back at reg login state so this
3884                  * mbox needs to be ignored becase
3885                  * there is another reg login in
3886                  * process.
3887                  */
3888                 clear_bit(NLP_IGNR_REG_CMPL, &ndlp->nlp_flag);
3889
3890                 /*
3891                  * We cannot leave the RPI registered because
3892                  * if we go thru discovery again for this ndlp
3893                  * a subsequent REG_RPI will fail.
3894                  */
3895                 set_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag);
3896                 lpfc_unreg_rpi(vport, ndlp);
3897         }
3898
3899         /* Call state machine */
3900         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
3901         pmb->ctx_buf = mp;
3902         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
3903
3904         /* decrement the node reference count held for this callback
3905          * function.
3906          */
3907         lpfc_nlp_put(ndlp);
3908
3909         return;
3910 }
3911
3912 static void
3913 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3914 {
3915         MAILBOX_t *mb = &pmb->u.mb;
3916         struct lpfc_vport *vport = pmb->vport;
3917         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3918
3919         switch (mb->mbxStatus) {
3920         case 0x0011:
3921         case 0x0020:
3922                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3923                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
3924                                  mb->mbxStatus);
3925                 break;
3926         /* If VPI is busy, reset the HBA */
3927         case 0x9700:
3928                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3929                         "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n",
3930                         vport->vpi, mb->mbxStatus);
3931                 if (!test_bit(FC_UNLOADING, &phba->pport->load_flag))
3932                         lpfc_workq_post_event(phba, NULL, NULL,
3933                                 LPFC_EVT_RESET_HBA);
3934         }
3935
3936         set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
3937         spin_lock_irq(shost->host_lock);
3938         vport->vpi_state &= ~LPFC_VPI_REGISTERED;
3939         spin_unlock_irq(shost->host_lock);
3940         mempool_free(pmb, phba->mbox_mem_pool);
3941         lpfc_cleanup_vports_rrqs(vport, NULL);
3942         /*
3943          * This shost reference might have been taken at the beginning of
3944          * lpfc_vport_delete()
3945          */
3946         if (test_bit(FC_UNLOADING, &vport->load_flag) && vport != phba->pport)
3947                 scsi_host_put(shost);
3948 }
3949
3950 int
3951 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
3952 {
3953         struct lpfc_hba  *phba = vport->phba;
3954         LPFC_MBOXQ_t *mbox;
3955         int rc;
3956
3957         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3958         if (!mbox)
3959                 return 1;
3960
3961         lpfc_unreg_vpi(phba, vport->vpi, mbox);
3962         mbox->vport = vport;
3963         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
3964         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3965         if (rc == MBX_NOT_FINISHED) {
3966                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3967                                  "1800 Could not issue unreg_vpi\n");
3968                 mempool_free(mbox, phba->mbox_mem_pool);
3969                 return rc;
3970         }
3971         return 0;
3972 }
3973
3974 static void
3975 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3976 {
3977         struct lpfc_vport *vport = pmb->vport;
3978         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3979         MAILBOX_t *mb = &pmb->u.mb;
3980
3981         switch (mb->mbxStatus) {
3982         case 0x0011:
3983         case 0x9601:
3984         case 0x9602:
3985                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3986                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
3987                                  mb->mbxStatus);
3988                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3989                 clear_bit(FC_FABRIC, &vport->fc_flag);
3990                 clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
3991                 vport->fc_myDID = 0;
3992
3993                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
3994                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
3995                         if (phba->nvmet_support)
3996                                 lpfc_nvmet_update_targetport(phba);
3997                         else
3998                                 lpfc_nvme_update_localport(vport);
3999                 }
4000                 goto out;
4001         }
4002
4003         clear_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
4004         spin_lock_irq(shost->host_lock);
4005         vport->vpi_state |= LPFC_VPI_REGISTERED;
4006         spin_unlock_irq(shost->host_lock);
4007         vport->num_disc_nodes = 0;
4008         /* go thru NPR list and issue ELS PLOGIs */
4009         if (atomic_read(&vport->fc_npr_cnt))
4010                 lpfc_els_disc_plogi(vport);
4011
4012         if (!vport->num_disc_nodes) {
4013                 clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag);
4014                 lpfc_can_disctmo(vport);
4015         }
4016         vport->port_state = LPFC_VPORT_READY;
4017
4018 out:
4019         mempool_free(pmb, phba->mbox_mem_pool);
4020         return;
4021 }
4022
4023 /**
4024  * lpfc_create_static_vport - Read HBA config region to create static vports.
4025  * @phba: pointer to lpfc hba data structure.
4026  *
4027  * This routine issue a DUMP mailbox command for config region 22 to get
4028  * the list of static vports to be created. The function create vports
4029  * based on the information returned from the HBA.
4030  **/
4031 void
4032 lpfc_create_static_vport(struct lpfc_hba *phba)
4033 {
4034         LPFC_MBOXQ_t *pmb = NULL;
4035         MAILBOX_t *mb;
4036         struct static_vport_info *vport_info;
4037         int mbx_wait_rc = 0, i;
4038         struct fc_vport_identifiers vport_id;
4039         struct fc_vport *new_fc_vport;
4040         struct Scsi_Host *shost;
4041         struct lpfc_vport *vport;
4042         uint16_t offset = 0;
4043         uint8_t *vport_buff;
4044         struct lpfc_dmabuf *mp;
4045         uint32_t byte_count = 0;
4046
4047         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4048         if (!pmb) {
4049                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4050                                 "0542 lpfc_create_static_vport failed to"
4051                                 " allocate mailbox memory\n");
4052                 return;
4053         }
4054         memset(pmb, 0, sizeof(LPFC_MBOXQ_t));
4055         mb = &pmb->u.mb;
4056
4057         vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
4058         if (!vport_info) {
4059                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4060                                 "0543 lpfc_create_static_vport failed to"
4061                                 " allocate vport_info\n");
4062                 mempool_free(pmb, phba->mbox_mem_pool);
4063                 return;
4064         }
4065
4066         vport_buff = (uint8_t *) vport_info;
4067         do {
4068                 /* While loop iteration forces a free dma buffer from
4069                  * the previous loop because the mbox is reused and
4070                  * the dump routine is a single-use construct.
4071                  */
4072                 if (pmb->ctx_buf) {
4073                         mp = pmb->ctx_buf;
4074                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
4075                         kfree(mp);
4076                         pmb->ctx_buf = NULL;
4077                 }
4078                 if (lpfc_dump_static_vport(phba, pmb, offset))
4079                         goto out;
4080
4081                 pmb->vport = phba->pport;
4082                 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb,
4083                                                         LPFC_MBOX_TMO);
4084
4085                 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) {
4086                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4087                                 "0544 lpfc_create_static_vport failed to"
4088                                 " issue dump mailbox command ret 0x%x "
4089                                 "status 0x%x\n",
4090                                 mbx_wait_rc, mb->mbxStatus);
4091                         goto out;
4092                 }
4093
4094                 if (phba->sli_rev == LPFC_SLI_REV4) {
4095                         byte_count = pmb->u.mqe.un.mb_words[5];
4096                         mp = pmb->ctx_buf;
4097                         if (byte_count > sizeof(struct static_vport_info) -
4098                                         offset)
4099                                 byte_count = sizeof(struct static_vport_info)
4100                                         - offset;
4101                         memcpy(vport_buff + offset, mp->virt, byte_count);
4102                         offset += byte_count;
4103                 } else {
4104                         if (mb->un.varDmp.word_cnt >
4105                                 sizeof(struct static_vport_info) - offset)
4106                                 mb->un.varDmp.word_cnt =
4107                                         sizeof(struct static_vport_info)
4108                                                 - offset;
4109                         byte_count = mb->un.varDmp.word_cnt;
4110                         lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
4111                                 vport_buff + offset,
4112                                 byte_count);
4113
4114                         offset += byte_count;
4115                 }
4116
4117         } while (byte_count &&
4118                 offset < sizeof(struct static_vport_info));
4119
4120
4121         if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
4122                 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
4123                         != VPORT_INFO_REV)) {
4124                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4125                                 "0545 lpfc_create_static_vport bad"
4126                                 " information header 0x%x 0x%x\n",
4127                                 le32_to_cpu(vport_info->signature),
4128                                 le32_to_cpu(vport_info->rev) &
4129                                 VPORT_INFO_REV_MASK);
4130
4131                 goto out;
4132         }
4133
4134         shost = lpfc_shost_from_vport(phba->pport);
4135
4136         for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
4137                 memset(&vport_id, 0, sizeof(vport_id));
4138                 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
4139                 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
4140                 if (!vport_id.port_name || !vport_id.node_name)
4141                         continue;
4142
4143                 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
4144                 vport_id.vport_type = FC_PORTTYPE_NPIV;
4145                 vport_id.disable = false;
4146                 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
4147
4148                 if (!new_fc_vport) {
4149                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4150                                 "0546 lpfc_create_static_vport failed to"
4151                                 " create vport\n");
4152                         continue;
4153                 }
4154
4155                 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
4156                 vport->vport_flag |= STATIC_VPORT;
4157         }
4158
4159 out:
4160         kfree(vport_info);
4161         if (mbx_wait_rc != MBX_TIMEOUT)
4162                 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4163 }
4164
4165 /*
4166  * This routine handles processing a Fabric REG_LOGIN mailbox
4167  * command upon completion. It is setup in the LPFC_MBOXQ
4168  * as the completion routine when the command is
4169  * handed off to the SLI layer.
4170  */
4171 void
4172 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4173 {
4174         struct lpfc_vport *vport = pmb->vport;
4175         MAILBOX_t *mb = &pmb->u.mb;
4176         struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
4177
4178         pmb->ctx_ndlp = NULL;
4179
4180         if (mb->mbxStatus) {
4181                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4182                                  "0258 Register Fabric login error: 0x%x\n",
4183                                  mb->mbxStatus);
4184                 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4185                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4186                         /* FLOGI failed, use loop map to make discovery list */
4187                         lpfc_disc_list_loopmap(vport);
4188
4189                         /* Start discovery */
4190                         lpfc_disc_start(vport);
4191                         /* Decrement the reference count to ndlp after the
4192                          * reference to the ndlp are done.
4193                          */
4194                         lpfc_nlp_put(ndlp);
4195                         return;
4196                 }
4197
4198                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
4199                 /* Decrement the reference count to ndlp after the reference
4200                  * to the ndlp are done.
4201                  */
4202                 lpfc_nlp_put(ndlp);
4203                 return;
4204         }
4205
4206         if (phba->sli_rev < LPFC_SLI_REV4)
4207                 ndlp->nlp_rpi = mb->un.varWords[0];
4208         set_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag);
4209         ndlp->nlp_type |= NLP_FABRIC;
4210         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4211
4212         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
4213                 /* when physical port receive logo donot start
4214                  * vport discovery */
4215                 if (!test_and_clear_bit(FC_LOGO_RCVD_DID_CHNG, &vport->fc_flag))
4216                         lpfc_start_fdiscs(phba);
4217                 lpfc_do_scr_ns_plogi(phba, vport);
4218         }
4219
4220         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4221
4222         /* Drop the reference count from the mbox at the end after
4223          * all the current reference to the ndlp have been done.
4224          */
4225         lpfc_nlp_put(ndlp);
4226         return;
4227 }
4228
4229  /*
4230   * This routine will issue a GID_FT for each FC4 Type supported
4231   * by the driver. ALL GID_FTs must complete before discovery is started.
4232   */
4233 int
4234 lpfc_issue_gidft(struct lpfc_vport *vport)
4235 {
4236         /* Good status, issue CT Request to NameServer */
4237         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4238             (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) {
4239                 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_FCP)) {
4240                         /* Cannot issue NameServer FCP Query, so finish up
4241                          * discovery
4242                          */
4243                         lpfc_printf_vlog(vport, KERN_ERR,
4244                                          LOG_TRACE_EVENT,
4245                                          "0604 %s FC TYPE %x %s\n",
4246                                          "Failed to issue GID_FT to ",
4247                                          FC_TYPE_FCP,
4248                                          "Finishing discovery.");
4249                         return 0;
4250                 }
4251                 vport->gidft_inp++;
4252         }
4253
4254         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4255             (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
4256                 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_NVME)) {
4257                         /* Cannot issue NameServer NVME Query, so finish up
4258                          * discovery
4259                          */
4260                         lpfc_printf_vlog(vport, KERN_ERR,
4261                                          LOG_TRACE_EVENT,
4262                                          "0605 %s FC_TYPE %x %s %d\n",
4263                                          "Failed to issue GID_FT to ",
4264                                          FC_TYPE_NVME,
4265                                          "Finishing discovery: gidftinp ",
4266                                          vport->gidft_inp);
4267                         if (vport->gidft_inp == 0)
4268                                 return 0;
4269                 } else
4270                         vport->gidft_inp++;
4271         }
4272         return vport->gidft_inp;
4273 }
4274
4275 /**
4276  * lpfc_issue_gidpt - issue a GID_PT for all N_Ports
4277  * @vport: The virtual port for which this call is being executed.
4278  *
4279  * This routine will issue a GID_PT to get a list of all N_Ports
4280  *
4281  * Return value :
4282  *   0 - Failure to issue a GID_PT
4283  *   1 - GID_PT issued
4284  **/
4285 int
4286 lpfc_issue_gidpt(struct lpfc_vport *vport)
4287 {
4288         /* Good status, issue CT Request to NameServer */
4289         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) {
4290                 /* Cannot issue NameServer FCP Query, so finish up
4291                  * discovery
4292                  */
4293                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4294                                  "0606 %s Port TYPE %x %s\n",
4295                                  "Failed to issue GID_PT to ",
4296                                  GID_PT_N_PORT,
4297                                  "Finishing discovery.");
4298                 return 0;
4299         }
4300         vport->gidft_inp++;
4301         return 1;
4302 }
4303
4304 /*
4305  * This routine handles processing a NameServer REG_LOGIN mailbox
4306  * command upon completion. It is setup in the LPFC_MBOXQ
4307  * as the completion routine when the command is
4308  * handed off to the SLI layer.
4309  */
4310 void
4311 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4312 {
4313         MAILBOX_t *mb = &pmb->u.mb;
4314         struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
4315         struct lpfc_vport *vport = pmb->vport;
4316         int rc;
4317
4318         pmb->ctx_ndlp = NULL;
4319         vport->gidft_inp = 0;
4320
4321         if (mb->mbxStatus) {
4322                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4323                                  "0260 Register NameServer error: 0x%x\n",
4324                                  mb->mbxStatus);
4325
4326 out:
4327                 /* decrement the node reference count held for this
4328                  * callback function.
4329                  */
4330                 lpfc_nlp_put(ndlp);
4331                 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4332
4333                 /* If the node is not registered with the scsi or nvme
4334                  * transport, remove the fabric node.  The failed reg_login
4335                  * is terminal and forces the removal of the last node
4336                  * reference.
4337                  */
4338                 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
4339                         clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
4340                         lpfc_nlp_put(ndlp);
4341                 }
4342
4343                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4344                         /*
4345                          * RegLogin failed, use loop map to make discovery
4346                          * list
4347                          */
4348                         lpfc_disc_list_loopmap(vport);
4349
4350                         /* Start discovery */
4351                         lpfc_disc_start(vport);
4352                         return;
4353                 }
4354                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
4355                 return;
4356         }
4357
4358         if (phba->sli_rev < LPFC_SLI_REV4)
4359                 ndlp->nlp_rpi = mb->un.varWords[0];
4360         set_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag);
4361         ndlp->nlp_type |= NLP_FABRIC;
4362         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4363         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
4364                          "0003 rpi:%x DID:%x flg:%lx %d x%px\n",
4365                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
4366                          kref_read(&ndlp->kref),
4367                          ndlp);
4368
4369         if (vport->port_state < LPFC_VPORT_READY) {
4370                 /* Link up discovery requires Fabric registration. */
4371                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
4372                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
4373                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
4374                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
4375
4376                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4377                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP))
4378                         lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, FC_TYPE_FCP);
4379
4380                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4381                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME))
4382                         lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0,
4383                                     FC_TYPE_NVME);
4384
4385                 /* Issue SCR just before NameServer GID_FT Query */
4386                 lpfc_issue_els_scr(vport, 0);
4387
4388                 /* Link was bounced or a Fabric LOGO occurred.  Start EDC
4389                  * with initial FW values provided the congestion mode is
4390                  * not off.  Note that signals may or may not be supported
4391                  * by the adapter but FPIN is provided by default for 1
4392                  * or both missing signals support.
4393                  */
4394                 if (phba->cmf_active_mode != LPFC_CFG_OFF) {
4395                         phba->cgn_reg_fpin = phba->cgn_init_reg_fpin;
4396                         phba->cgn_reg_signal = phba->cgn_init_reg_signal;
4397                         rc = lpfc_issue_els_edc(vport, 0);
4398                         lpfc_printf_log(phba, KERN_INFO,
4399                                         LOG_INIT | LOG_ELS | LOG_DISCOVERY,
4400                                         "4220 Issue EDC status x%x Data x%x\n",
4401                                         rc, phba->cgn_init_reg_signal);
4402                 } else if (phba->lmt & LMT_64Gb) {
4403                         /* may send link fault capability descriptor */
4404                         lpfc_issue_els_edc(vport, 0);
4405                 } else {
4406                         lpfc_issue_els_rdf(vport, 0);
4407                 }
4408         }
4409
4410         vport->fc_ns_retry = 0;
4411         if (lpfc_issue_gidft(vport) == 0)
4412                 goto out;
4413
4414         /*
4415          * At this point in time we may need to wait for multiple
4416          * SLI_CTNS_GID_FT CT commands to complete before we start discovery.
4417          *
4418          * decrement the node reference count held for this
4419          * callback function.
4420          */
4421         lpfc_nlp_put(ndlp);
4422         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4423         return;
4424 }
4425
4426 /*
4427  * This routine handles processing a Fabric Controller REG_LOGIN mailbox
4428  * command upon completion. It is setup in the LPFC_MBOXQ
4429  * as the completion routine when the command is handed off to the SLI layer.
4430  */
4431 void
4432 lpfc_mbx_cmpl_fc_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4433 {
4434         struct lpfc_vport *vport = pmb->vport;
4435         MAILBOX_t *mb = &pmb->u.mb;
4436         struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
4437
4438         pmb->ctx_ndlp = NULL;
4439         if (mb->mbxStatus) {
4440                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4441                                  "0933 %s: Register FC login error: 0x%x\n",
4442                                  __func__, mb->mbxStatus);
4443                 goto out;
4444         }
4445
4446         lpfc_check_nlp_post_devloss(vport, ndlp);
4447
4448         if (phba->sli_rev < LPFC_SLI_REV4)
4449                 ndlp->nlp_rpi = mb->un.varWords[0];
4450
4451         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4452                          "0934 %s: Complete FC x%x RegLogin rpi x%x ste x%x\n",
4453                          __func__, ndlp->nlp_DID, ndlp->nlp_rpi,
4454                          ndlp->nlp_state);
4455
4456         set_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag);
4457         clear_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag);
4458         ndlp->nlp_type |= NLP_FABRIC;
4459         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4460
4461  out:
4462         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4463
4464         /* Drop the reference count from the mbox at the end after
4465          * all the current reference to the ndlp have been done.
4466          */
4467         lpfc_nlp_put(ndlp);
4468 }
4469
4470 static void
4471 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4472 {
4473         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4474         struct fc_rport  *rport;
4475         struct lpfc_rport_data *rdata;
4476         struct fc_rport_identifiers rport_ids;
4477         struct lpfc_hba  *phba = vport->phba;
4478         unsigned long flags;
4479
4480         if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4481                 return;
4482
4483         /* Remote port has reappeared. Re-register w/ FC transport */
4484         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
4485         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
4486         rport_ids.port_id = ndlp->nlp_DID;
4487         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
4488
4489
4490         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4491                               "rport add:       did:x%x flg:x%lx type x%x",
4492                               ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4493
4494         /* Don't add the remote port if unloading. */
4495         if (test_bit(FC_UNLOADING, &vport->load_flag))
4496                 return;
4497
4498         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
4499         if (!rport) {
4500                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
4501                            "Warning: fc_remote_port_add failed\n");
4502                 return;
4503         }
4504
4505         /* Successful port add.  Complete initializing node data */
4506         rport->maxframe_size = ndlp->nlp_maxframe;
4507         rport->supported_classes = ndlp->nlp_class_sup;
4508         rdata = rport->dd_data;
4509         rdata->pnode = lpfc_nlp_get(ndlp);
4510         if (!rdata->pnode) {
4511                 dev_warn(&phba->pcidev->dev,
4512                          "Warning - node ref failed. Unreg rport\n");
4513                 fc_remote_port_delete(rport);
4514                 ndlp->rport = NULL;
4515                 return;
4516         }
4517
4518         spin_lock_irqsave(&ndlp->lock, flags);
4519         ndlp->fc4_xpt_flags |= SCSI_XPT_REGD;
4520         spin_unlock_irqrestore(&ndlp->lock, flags);
4521
4522         if (ndlp->nlp_type & NLP_FCP_TARGET)
4523                 rport_ids.roles |= FC_PORT_ROLE_FCP_TARGET;
4524         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
4525                 rport_ids.roles |= FC_PORT_ROLE_FCP_INITIATOR;
4526         if (ndlp->nlp_type & NLP_NVME_INITIATOR)
4527                 rport_ids.roles |= FC_PORT_ROLE_NVME_INITIATOR;
4528         if (ndlp->nlp_type & NLP_NVME_TARGET)
4529                 rport_ids.roles |= FC_PORT_ROLE_NVME_TARGET;
4530         if (ndlp->nlp_type & NLP_NVME_DISCOVERY)
4531                 rport_ids.roles |= FC_PORT_ROLE_NVME_DISCOVERY;
4532
4533         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
4534                 fc_remote_port_rolechg(rport, rport_ids.roles);
4535
4536         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
4537                          "3183 %s rport x%px DID x%x, role x%x refcnt %d\n",
4538                          __func__, rport, rport->port_id, rport->roles,
4539                          kref_read(&ndlp->kref));
4540
4541         if ((rport->scsi_target_id != -1) &&
4542             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
4543                 ndlp->nlp_sid = rport->scsi_target_id;
4544         }
4545
4546         return;
4547 }
4548
4549 static void
4550 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
4551 {
4552         struct fc_rport *rport = ndlp->rport;
4553         struct lpfc_vport *vport = ndlp->vport;
4554
4555         if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4556                 return;
4557
4558         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4559                 "rport delete:    did:x%x flg:x%lx type x%x",
4560                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4561
4562         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4563                          "3184 rport unregister x%06x, rport x%px "
4564                          "xptflg x%x refcnt %d\n",
4565                          ndlp->nlp_DID, rport, ndlp->fc4_xpt_flags,
4566                          kref_read(&ndlp->kref));
4567
4568         fc_remote_port_delete(rport);
4569         lpfc_nlp_put(ndlp);
4570 }
4571
4572 static void
4573 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
4574 {
4575         switch (state) {
4576         case NLP_STE_UNUSED_NODE:
4577                 atomic_add(count, &vport->fc_unused_cnt);
4578                 break;
4579         case NLP_STE_PLOGI_ISSUE:
4580                 atomic_add(count, &vport->fc_plogi_cnt);
4581                 break;
4582         case NLP_STE_ADISC_ISSUE:
4583                 atomic_add(count, &vport->fc_adisc_cnt);
4584                 break;
4585         case NLP_STE_REG_LOGIN_ISSUE:
4586                 atomic_add(count, &vport->fc_reglogin_cnt);
4587                 break;
4588         case NLP_STE_PRLI_ISSUE:
4589                 atomic_add(count, &vport->fc_prli_cnt);
4590                 break;
4591         case NLP_STE_UNMAPPED_NODE:
4592                 atomic_add(count, &vport->fc_unmap_cnt);
4593                 break;
4594         case NLP_STE_MAPPED_NODE:
4595                 atomic_add(count, &vport->fc_map_cnt);
4596                 break;
4597         case NLP_STE_NPR_NODE:
4598                 if (!atomic_read(&vport->fc_npr_cnt) && count == -1)
4599                         atomic_set(&vport->fc_npr_cnt, 0);
4600                 else
4601                         atomic_add(count, &vport->fc_npr_cnt);
4602                 break;
4603         }
4604 }
4605
4606 /* Register a node with backend if not already done */
4607 void
4608 lpfc_nlp_reg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4609 {
4610         unsigned long iflags;
4611
4612         lpfc_check_nlp_post_devloss(vport, ndlp);
4613
4614         spin_lock_irqsave(&ndlp->lock, iflags);
4615         if (ndlp->fc4_xpt_flags & NLP_XPT_REGD) {
4616                 /* Already registered with backend, trigger rescan */
4617                 spin_unlock_irqrestore(&ndlp->lock, iflags);
4618
4619                 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD &&
4620                     ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY)) {
4621                         lpfc_nvme_rescan_port(vport, ndlp);
4622                 }
4623                 return;
4624         }
4625
4626         ndlp->fc4_xpt_flags |= NLP_XPT_REGD;
4627         spin_unlock_irqrestore(&ndlp->lock, iflags);
4628
4629         if (lpfc_valid_xpt_node(ndlp)) {
4630                 vport->phba->nport_event_cnt++;
4631                 /*
4632                  * Tell the fc transport about the port, if we haven't
4633                  * already. If we have, and it's a scsi entity, be
4634                  */
4635                 lpfc_register_remote_port(vport, ndlp);
4636         }
4637
4638         /* We are done if we do not have any NVME remote node */
4639         if (!(ndlp->nlp_fc4_type & NLP_FC4_NVME))
4640                 return;
4641
4642         /* Notify the NVME transport of this new rport. */
4643         if (vport->phba->sli_rev >= LPFC_SLI_REV4 &&
4644                         ndlp->nlp_fc4_type & NLP_FC4_NVME) {
4645                 if (vport->phba->nvmet_support == 0) {
4646                         /* Register this rport with the transport.
4647                          * Only NVME Target Rports are registered with
4648                          * the transport.
4649                          */
4650                         if (ndlp->nlp_type & NLP_NVME_TARGET) {
4651                                 vport->phba->nport_event_cnt++;
4652                                 lpfc_nvme_register_port(vport, ndlp);
4653                         }
4654                 } else {
4655                         /* Just take an NDLP ref count since the
4656                          * target does not register rports.
4657                          */
4658                         lpfc_nlp_get(ndlp);
4659                 }
4660         }
4661 }
4662
4663 /* Unregister a node with backend if not already done */
4664 void
4665 lpfc_nlp_unreg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4666 {
4667         unsigned long iflags;
4668
4669         spin_lock_irqsave(&ndlp->lock, iflags);
4670         if (!(ndlp->fc4_xpt_flags & NLP_XPT_REGD)) {
4671                 spin_unlock_irqrestore(&ndlp->lock, iflags);
4672                 lpfc_printf_vlog(vport, KERN_INFO,
4673                                  LOG_ELS | LOG_NODE | LOG_DISCOVERY,
4674                                  "0999 %s Not regd: ndlp x%px rport x%px DID "
4675                                  "x%x FLG x%lx XPT x%x\n",
4676                                   __func__, ndlp, ndlp->rport, ndlp->nlp_DID,
4677                                   ndlp->nlp_flag, ndlp->fc4_xpt_flags);
4678                 return;
4679         }
4680
4681         ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD;
4682         spin_unlock_irqrestore(&ndlp->lock, iflags);
4683
4684         if (ndlp->rport &&
4685             ndlp->fc4_xpt_flags & SCSI_XPT_REGD) {
4686                 vport->phba->nport_event_cnt++;
4687                 lpfc_unregister_remote_port(ndlp);
4688         } else if (!ndlp->rport) {
4689                 lpfc_printf_vlog(vport, KERN_INFO,
4690                                  LOG_ELS | LOG_NODE | LOG_DISCOVERY,
4691                                  "1999 %s NDLP in devloss x%px DID x%x FLG x%lx"
4692                                  " XPT x%x refcnt %u\n",
4693                                  __func__, ndlp, ndlp->nlp_DID, ndlp->nlp_flag,
4694                                  ndlp->fc4_xpt_flags,
4695                                  kref_read(&ndlp->kref));
4696         }
4697
4698         if (ndlp->fc4_xpt_flags & NVME_XPT_REGD) {
4699                 vport->phba->nport_event_cnt++;
4700                 if (vport->phba->nvmet_support == 0) {
4701                         /* Start devloss if target. */
4702                         if (ndlp->nlp_type & NLP_NVME_TARGET)
4703                                 lpfc_nvme_unregister_port(vport, ndlp);
4704                 } else {
4705                         /* NVMET has no upcall. */
4706                         lpfc_nlp_put(ndlp);
4707                 }
4708         }
4709
4710 }
4711
4712 /*
4713  * Adisc state change handling
4714  */
4715 static void
4716 lpfc_handle_adisc_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4717                 int new_state)
4718 {
4719         switch (new_state) {
4720         /*
4721          * Any state to ADISC_ISSUE
4722          * Do nothing, adisc cmpl handling will trigger state changes
4723          */
4724         case NLP_STE_ADISC_ISSUE:
4725                 break;
4726
4727         /*
4728          * ADISC_ISSUE to mapped states
4729          * Trigger a registration with backend, it will be nop if
4730          * already registered
4731          */
4732         case NLP_STE_UNMAPPED_NODE:
4733                 ndlp->nlp_type |= NLP_FC_NODE;
4734                 fallthrough;
4735         case NLP_STE_MAPPED_NODE:
4736                 clear_bit(NLP_NODEV_REMOVE, &ndlp->nlp_flag);
4737                 lpfc_nlp_reg_node(vport, ndlp);
4738                 break;
4739
4740         /*
4741          * ADISC_ISSUE to non-mapped states
4742          * We are moving from ADISC_ISSUE to a non-mapped state because
4743          * ADISC failed, we would have skipped unregistering with
4744          * backend, attempt it now
4745          */
4746         case NLP_STE_NPR_NODE:
4747                 clear_bit(NLP_RCV_PLOGI, &ndlp->nlp_flag);
4748                 fallthrough;
4749         default:
4750                 lpfc_nlp_unreg_node(vport, ndlp);
4751                 break;
4752         }
4753
4754 }
4755
4756 static void
4757 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4758                        int old_state, int new_state)
4759 {
4760         /* Trap ADISC changes here */
4761         if (new_state == NLP_STE_ADISC_ISSUE ||
4762             old_state == NLP_STE_ADISC_ISSUE) {
4763                 lpfc_handle_adisc_state(vport, ndlp, new_state);
4764                 return;
4765         }
4766
4767         if (new_state == NLP_STE_UNMAPPED_NODE) {
4768                 clear_bit(NLP_NODEV_REMOVE, &ndlp->nlp_flag);
4769                 ndlp->nlp_type |= NLP_FC_NODE;
4770         }
4771         if (new_state == NLP_STE_MAPPED_NODE)
4772                 clear_bit(NLP_NODEV_REMOVE, &ndlp->nlp_flag);
4773         if (new_state == NLP_STE_NPR_NODE)
4774                 clear_bit(NLP_RCV_PLOGI, &ndlp->nlp_flag);
4775
4776         /* Reg/Unreg for FCP and NVME Transport interface */
4777         if ((old_state == NLP_STE_MAPPED_NODE ||
4778              old_state == NLP_STE_UNMAPPED_NODE)) {
4779                 /* For nodes marked for ADISC, Handle unreg in ADISC cmpl
4780                  * if linkup. In linkdown do unreg_node
4781                  */
4782                 if (!test_bit(NLP_NPR_ADISC, &ndlp->nlp_flag) ||
4783                     !lpfc_is_link_up(vport->phba))
4784                         lpfc_nlp_unreg_node(vport, ndlp);
4785         }
4786
4787         if (new_state ==  NLP_STE_MAPPED_NODE ||
4788             new_state == NLP_STE_UNMAPPED_NODE)
4789                 lpfc_nlp_reg_node(vport, ndlp);
4790
4791         /*
4792          * If the node just added to Mapped list was an FCP target,
4793          * but the remote port registration failed or assigned a target
4794          * id outside the presentable range - move the node to the
4795          * Unmapped List.
4796          */
4797         if ((new_state == NLP_STE_MAPPED_NODE) &&
4798             (ndlp->nlp_type & NLP_FCP_TARGET) &&
4799             (!ndlp->rport ||
4800              ndlp->rport->scsi_target_id == -1 ||
4801              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
4802                 set_bit(NLP_TGT_NO_SCSIID, &ndlp->nlp_flag);
4803                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4804         }
4805 }
4806
4807 static char *
4808 lpfc_nlp_state_name(char *buffer, size_t size, int state)
4809 {
4810         static char *states[] = {
4811                 [NLP_STE_UNUSED_NODE] = "UNUSED",
4812                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
4813                 [NLP_STE_ADISC_ISSUE] = "ADISC",
4814                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
4815                 [NLP_STE_PRLI_ISSUE] = "PRLI",
4816                 [NLP_STE_LOGO_ISSUE] = "LOGO",
4817                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
4818                 [NLP_STE_MAPPED_NODE] = "MAPPED",
4819                 [NLP_STE_NPR_NODE] = "NPR",
4820         };
4821
4822         if (state < NLP_STE_MAX_STATE && states[state])
4823                 strscpy(buffer, states[state], size);
4824         else
4825                 snprintf(buffer, size, "unknown (%d)", state);
4826         return buffer;
4827 }
4828
4829 void
4830 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4831                    int state)
4832 {
4833         int  old_state = ndlp->nlp_state;
4834         bool node_dropped = test_bit(NLP_DROPPED, &ndlp->nlp_flag);
4835         char name1[16], name2[16];
4836         unsigned long iflags;
4837
4838         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4839                          "0904 NPort state transition x%06x, %s -> %s\n",
4840                          ndlp->nlp_DID,
4841                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
4842                          lpfc_nlp_state_name(name2, sizeof(name2), state));
4843
4844         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4845                 "node statechg    did:x%x old:%d ste:%d",
4846                 ndlp->nlp_DID, old_state, state);
4847
4848         if (node_dropped && old_state == NLP_STE_UNUSED_NODE &&
4849             state != NLP_STE_UNUSED_NODE) {
4850                 clear_bit(NLP_DROPPED, &ndlp->nlp_flag);
4851                 lpfc_nlp_get(ndlp);
4852         }
4853
4854         if (old_state == NLP_STE_NPR_NODE &&
4855             state != NLP_STE_NPR_NODE)
4856                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4857         if (old_state == NLP_STE_UNMAPPED_NODE) {
4858                 clear_bit(NLP_TGT_NO_SCSIID, &ndlp->nlp_flag);
4859                 ndlp->nlp_type &= ~NLP_FC_NODE;
4860         }
4861
4862         if (list_empty(&ndlp->nlp_listp)) {
4863                 spin_lock_irqsave(&vport->fc_nodes_list_lock, iflags);
4864                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4865                 spin_unlock_irqrestore(&vport->fc_nodes_list_lock, iflags);
4866         } else if (old_state)
4867                 lpfc_nlp_counters(vport, old_state, -1);
4868
4869         ndlp->nlp_state = state;
4870         lpfc_nlp_counters(vport, state, 1);
4871         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
4872 }
4873
4874 void
4875 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4876 {
4877         unsigned long iflags;
4878
4879         if (list_empty(&ndlp->nlp_listp)) {
4880                 spin_lock_irqsave(&vport->fc_nodes_list_lock, iflags);
4881                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4882                 spin_unlock_irqrestore(&vport->fc_nodes_list_lock, iflags);
4883         }
4884 }
4885
4886 void
4887 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4888 {
4889         unsigned long iflags;
4890
4891         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4892         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4893                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4894         spin_lock_irqsave(&vport->fc_nodes_list_lock, iflags);
4895         list_del_init(&ndlp->nlp_listp);
4896         spin_unlock_irqrestore(&vport->fc_nodes_list_lock, iflags);
4897         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4898                                 NLP_STE_UNUSED_NODE);
4899 }
4900
4901 /**
4902  * lpfc_initialize_node - Initialize all fields of node object
4903  * @vport: Pointer to Virtual Port object.
4904  * @ndlp: Pointer to FC node object.
4905  * @did: FC_ID of the node.
4906  *
4907  * This function is always called when node object need to be initialized.
4908  * It initializes all the fields of the node object. Although the reference
4909  * to phba from @ndlp can be obtained indirectly through it's reference to
4910  * @vport, a direct reference to phba is taken here by @ndlp. This is due
4911  * to the life-span of the @ndlp might go beyond the existence of @vport as
4912  * the final release of ndlp is determined by its reference count. And, the
4913  * operation on @ndlp needs the reference to phba.
4914  **/
4915 static inline void
4916 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4917         uint32_t did)
4918 {
4919         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
4920         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
4921         timer_setup(&ndlp->nlp_delayfunc, lpfc_els_retry_delay, 0);
4922         INIT_LIST_HEAD(&ndlp->recovery_evt.evt_listp);
4923
4924         ndlp->nlp_DID = did;
4925         ndlp->vport = vport;
4926         ndlp->phba = vport->phba;
4927         ndlp->nlp_sid = NLP_NO_SID;
4928         ndlp->nlp_fc4_type = NLP_FC4_NONE;
4929         kref_init(&ndlp->kref);
4930         atomic_set(&ndlp->cmd_pending, 0);
4931         ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
4932         ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
4933 }
4934
4935 void
4936 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4937 {
4938         /*
4939          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
4940          * be used when lpfc wants to remove the "last" lpfc_nlp_put() to
4941          * release the ndlp from the vport when conditions are correct.
4942          */
4943         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
4944                 return;
4945         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
4946         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4947                 lpfc_cleanup_vports_rrqs(vport, ndlp);
4948                 lpfc_unreg_rpi(vport, ndlp);
4949         }
4950
4951         /* NLP_DROPPED means another thread already removed the initial
4952          * reference from lpfc_nlp_init.  If set, don't drop it again and
4953          * introduce an imbalance.
4954          */
4955         if (!test_and_set_bit(NLP_DROPPED, &ndlp->nlp_flag))
4956                 lpfc_nlp_put(ndlp);
4957 }
4958
4959 /*
4960  * Start / ReStart rescue timer for Discovery / RSCN handling
4961  */
4962 void
4963 lpfc_set_disctmo(struct lpfc_vport *vport)
4964 {
4965         struct lpfc_hba  *phba = vport->phba;
4966         uint32_t tmo;
4967
4968         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
4969                 /* For FAN, timeout should be greater than edtov */
4970                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
4971         } else {
4972                 /* Normal discovery timeout should be > than ELS/CT timeout
4973                  * FC spec states we need 3 * ratov for CT requests
4974                  */
4975                 tmo = ((phba->fc_ratov * 3) + 3);
4976         }
4977
4978
4979         if (!timer_pending(&vport->fc_disctmo)) {
4980                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4981                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
4982                         tmo, vport->port_state, vport->fc_flag);
4983         }
4984
4985         mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo));
4986         set_bit(FC_DISC_TMO, &vport->fc_flag);
4987
4988         /* Start Discovery Timer state <hba_state> */
4989         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4990                          "0247 Start Discovery Timer state x%x "
4991                          "Data: x%x x%lx x%x x%x\n",
4992                          vport->port_state, tmo,
4993                          (unsigned long)&vport->fc_disctmo,
4994                          atomic_read(&vport->fc_plogi_cnt),
4995                          atomic_read(&vport->fc_adisc_cnt));
4996
4997         return;
4998 }
4999
5000 /*
5001  * Cancel rescue timer for Discovery / RSCN handling
5002  */
5003 int
5004 lpfc_can_disctmo(struct lpfc_vport *vport)
5005 {
5006         unsigned long iflags;
5007
5008         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
5009                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
5010                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
5011
5012         /* Turn off discovery timer if its running */
5013         if (test_bit(FC_DISC_TMO, &vport->fc_flag) ||
5014             timer_pending(&vport->fc_disctmo)) {
5015                 clear_bit(FC_DISC_TMO, &vport->fc_flag);
5016                 del_timer_sync(&vport->fc_disctmo);
5017                 spin_lock_irqsave(&vport->work_port_lock, iflags);
5018                 vport->work_port_events &= ~WORKER_DISC_TMO;
5019                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
5020         }
5021
5022         /* Cancel Discovery Timer state <hba_state> */
5023         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5024                          "0248 Cancel Discovery Timer state x%x "
5025                          "Data: x%lx x%x x%x\n",
5026                          vport->port_state, vport->fc_flag,
5027                          atomic_read(&vport->fc_plogi_cnt),
5028                          atomic_read(&vport->fc_adisc_cnt));
5029         return 0;
5030 }
5031
5032 /*
5033  * Check specified ring for outstanding IOCB on the SLI queue
5034  * Return true if iocb matches the specified nport
5035  */
5036 int
5037 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
5038                     struct lpfc_sli_ring *pring,
5039                     struct lpfc_iocbq *iocb,
5040                     struct lpfc_nodelist *ndlp)
5041 {
5042         struct lpfc_vport *vport = ndlp->vport;
5043         u8 ulp_command;
5044         u16 ulp_context;
5045         u32 remote_id;
5046
5047         if (iocb->vport != vport)
5048                 return 0;
5049
5050         ulp_command = get_job_cmnd(phba, iocb);
5051         ulp_context = get_job_ulpcontext(phba, iocb);
5052         remote_id = get_job_els_rsp64_did(phba, iocb);
5053
5054         if (pring->ringno == LPFC_ELS_RING) {
5055                 switch (ulp_command) {
5056                 case CMD_GEN_REQUEST64_CR:
5057                         if (iocb->ndlp == ndlp)
5058                                 return 1;
5059                         fallthrough;
5060                 case CMD_ELS_REQUEST64_CR:
5061                         if (remote_id == ndlp->nlp_DID)
5062                                 return 1;
5063                         fallthrough;
5064                 case CMD_XMIT_ELS_RSP64_CX:
5065                         if (iocb->ndlp == ndlp)
5066                                 return 1;
5067                 }
5068         } else if (pring->ringno == LPFC_FCP_RING) {
5069                 /* Skip match check if waiting to relogin to FCP target */
5070                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
5071                     test_bit(NLP_DELAY_TMO, &ndlp->nlp_flag))
5072                         return 0;
5073
5074                 if (ulp_context == ndlp->nlp_rpi)
5075                         return 1;
5076         }
5077         return 0;
5078 }
5079
5080 static void
5081 __lpfc_dequeue_nport_iocbs(struct lpfc_hba *phba,
5082                 struct lpfc_nodelist *ndlp, struct lpfc_sli_ring *pring,
5083                 struct list_head *dequeue_list)
5084 {
5085         struct lpfc_iocbq *iocb, *next_iocb;
5086
5087         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
5088                 /* Check to see if iocb matches the nport */
5089                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
5090                         /* match, dequeue */
5091                         list_move_tail(&iocb->list, dequeue_list);
5092         }
5093 }
5094
5095 static void
5096 lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba *phba,
5097                 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
5098 {
5099         struct lpfc_sli *psli = &phba->sli;
5100         uint32_t i;
5101
5102         spin_lock_irq(&phba->hbalock);
5103         for (i = 0; i < psli->num_rings; i++)
5104                 __lpfc_dequeue_nport_iocbs(phba, ndlp, &psli->sli3_ring[i],
5105                                                 dequeue_list);
5106         spin_unlock_irq(&phba->hbalock);
5107 }
5108
5109 static void
5110 lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba *phba,
5111                 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
5112 {
5113         struct lpfc_sli_ring *pring;
5114         struct lpfc_queue *qp = NULL;
5115
5116         spin_lock_irq(&phba->hbalock);
5117         list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
5118                 pring = qp->pring;
5119                 if (!pring)
5120                         continue;
5121                 spin_lock(&pring->ring_lock);
5122                 __lpfc_dequeue_nport_iocbs(phba, ndlp, pring, dequeue_list);
5123                 spin_unlock(&pring->ring_lock);
5124         }
5125         spin_unlock_irq(&phba->hbalock);
5126 }
5127
5128 /*
5129  * Free resources / clean up outstanding I/Os
5130  * associated with nlp_rpi in the LPFC_NODELIST entry.
5131  */
5132 static int
5133 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
5134 {
5135         LIST_HEAD(completions);
5136
5137         lpfc_fabric_abort_nport(ndlp);
5138
5139         /*
5140          * Everything that matches on txcmplq will be returned
5141          * by firmware with a no rpi error.
5142          */
5143         if (test_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag)) {
5144                 if (phba->sli_rev != LPFC_SLI_REV4)
5145                         lpfc_sli3_dequeue_nport_iocbs(phba, ndlp, &completions);
5146                 else
5147                         lpfc_sli4_dequeue_nport_iocbs(phba, ndlp, &completions);
5148         }
5149
5150         /* Cancel all the IOCBs from the completions list */
5151         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5152                               IOERR_SLI_ABORTED);
5153
5154         return 0;
5155 }
5156
5157 /**
5158  * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO
5159  * @phba: Pointer to HBA context object.
5160  * @pmb: Pointer to mailbox object.
5161  *
5162  * This function will issue an ELS LOGO command after completing
5163  * the UNREG_RPI.
5164  **/
5165 static void
5166 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5167 {
5168         struct lpfc_vport  *vport = pmb->vport;
5169         struct lpfc_nodelist *ndlp;
5170
5171         ndlp = pmb->ctx_ndlp;
5172         if (!ndlp)
5173                 return;
5174         lpfc_issue_els_logo(vport, ndlp, 0);
5175
5176         /* Check to see if there are any deferred events to process */
5177         if (test_bit(NLP_UNREG_INP, &ndlp->nlp_flag) &&
5178             ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING) {
5179                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5180                                  "1434 UNREG cmpl deferred logo x%x "
5181                                  "on NPort x%x Data: x%x x%px\n",
5182                                  ndlp->nlp_rpi, ndlp->nlp_DID,
5183                                  ndlp->nlp_defer_did, ndlp);
5184
5185                 clear_bit(NLP_UNREG_INP, &ndlp->nlp_flag);
5186                 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
5187                 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
5188         } else {
5189                 clear_bit(NLP_UNREG_INP, &ndlp->nlp_flag);
5190         }
5191
5192         /* The node has an outstanding reference for the unreg. Now
5193          * that the LOGO action and cleanup are finished, release
5194          * resources.
5195          */
5196         lpfc_nlp_put(ndlp);
5197         mempool_free(pmb, phba->mbox_mem_pool);
5198 }
5199
5200 /*
5201  * Sets the mailbox completion handler to be used for the
5202  * unreg_rpi command. The handler varies based on the state of
5203  * the port and what will be happening to the rpi next.
5204  */
5205 static void
5206 lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba *phba, struct lpfc_vport *vport,
5207         struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox)
5208 {
5209         /* Driver always gets a reference on the mailbox job
5210          * in support of async jobs.
5211          */
5212         mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
5213         if (!mbox->ctx_ndlp)
5214                 return;
5215
5216         if (test_bit(NLP_ISSUE_LOGO, &ndlp->nlp_flag)) {
5217                 mbox->mbox_cmpl = lpfc_nlp_logo_unreg;
5218         } else if (phba->sli_rev == LPFC_SLI_REV4 &&
5219                    !test_bit(FC_UNLOADING, &vport->load_flag) &&
5220                     (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
5221                                       LPFC_SLI_INTF_IF_TYPE_2) &&
5222                     (kref_read(&ndlp->kref) > 0)) {
5223                 mbox->mbox_cmpl = lpfc_sli4_unreg_rpi_cmpl_clr;
5224         } else {
5225                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5226         }
5227 }
5228
5229 /*
5230  * Free rpi associated with LPFC_NODELIST entry.
5231  * This routine is called from lpfc_freenode(), when we are removing
5232  * a LPFC_NODELIST entry. It is also called if the driver initiates a
5233  * LOGO that completes successfully, and we are waiting to PLOGI back
5234  * to the remote NPort. In addition, it is called after we receive
5235  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
5236  * we are waiting to PLOGI back to the remote NPort.
5237  */
5238 int
5239 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5240 {
5241         struct lpfc_hba *phba = vport->phba;
5242         LPFC_MBOXQ_t    *mbox;
5243         int rc, acc_plogi = 1;
5244         uint16_t rpi;
5245
5246         if (test_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag) ||
5247             test_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag)) {
5248                 if (test_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag))
5249                         lpfc_printf_vlog(vport, KERN_INFO,
5250                                          LOG_NODE | LOG_DISCOVERY,
5251                                          "3366 RPI x%x needs to be "
5252                                          "unregistered nlp_flag x%lx "
5253                                          "did x%x\n",
5254                                          ndlp->nlp_rpi, ndlp->nlp_flag,
5255                                          ndlp->nlp_DID);
5256
5257                 /* If there is already an UNREG in progress for this ndlp,
5258                  * no need to queue up another one.
5259                  */
5260                 if (test_bit(NLP_UNREG_INP, &ndlp->nlp_flag)) {
5261                         lpfc_printf_vlog(vport, KERN_INFO,
5262                                          LOG_NODE | LOG_DISCOVERY,
5263                                          "1436 unreg_rpi SKIP UNREG x%x on "
5264                                          "NPort x%x deferred x%x flg x%lx "
5265                                          "Data: x%px\n",
5266                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5267                                          ndlp->nlp_defer_did,
5268                                          ndlp->nlp_flag, ndlp);
5269                         goto out;
5270                 }
5271
5272                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5273                 if (mbox) {
5274                         /* SLI4 ports require the physical rpi value. */
5275                         rpi = ndlp->nlp_rpi;
5276                         if (phba->sli_rev == LPFC_SLI_REV4)
5277                                 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
5278
5279                         lpfc_unreg_login(phba, vport->vpi, rpi, mbox);
5280                         mbox->vport = vport;
5281                         lpfc_set_unreg_login_mbx_cmpl(phba, vport, ndlp, mbox);
5282                         if (!mbox->ctx_ndlp) {
5283                                 mempool_free(mbox, phba->mbox_mem_pool);
5284                                 return 1;
5285                         }
5286
5287                         /* Accept PLOGIs after unreg_rpi_cmpl. */
5288                         if (mbox->mbox_cmpl == lpfc_sli4_unreg_rpi_cmpl_clr)
5289                                 acc_plogi = 0;
5290
5291                         if (!test_bit(FC_OFFLINE_MODE, &vport->fc_flag))
5292                                 set_bit(NLP_UNREG_INP, &ndlp->nlp_flag);
5293
5294                         lpfc_printf_vlog(vport, KERN_INFO,
5295                                          LOG_NODE | LOG_DISCOVERY,
5296                                          "1433 unreg_rpi UNREG x%x on "
5297                                          "NPort x%x deferred flg x%lx "
5298                                          "Data:x%px\n",
5299                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5300                                          ndlp->nlp_flag, ndlp);
5301
5302                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5303                         if (rc == MBX_NOT_FINISHED) {
5304                                 clear_bit(NLP_UNREG_INP, &ndlp->nlp_flag);
5305                                 mempool_free(mbox, phba->mbox_mem_pool);
5306                                 acc_plogi = 1;
5307                                 lpfc_nlp_put(ndlp);
5308                         }
5309                 } else {
5310                         lpfc_printf_vlog(vport, KERN_INFO,
5311                                          LOG_NODE | LOG_DISCOVERY,
5312                                          "1444 Failed to allocate mempool "
5313                                          "unreg_rpi UNREG x%x, "
5314                                          "DID x%x, flag x%lx, "
5315                                          "ndlp x%px\n",
5316                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5317                                          ndlp->nlp_flag, ndlp);
5318
5319                         /* Because mempool_alloc failed, we
5320                          * will issue a LOGO here and keep the rpi alive if
5321                          * not unloading.
5322                          */
5323                         if (!test_bit(FC_UNLOADING, &vport->load_flag)) {
5324                                 clear_bit(NLP_UNREG_INP, &ndlp->nlp_flag);
5325                                 lpfc_issue_els_logo(vport, ndlp, 0);
5326                                 ndlp->nlp_prev_state = ndlp->nlp_state;
5327                                 lpfc_nlp_set_state(vport, ndlp,
5328                                                    NLP_STE_NPR_NODE);
5329                         }
5330
5331                         return 1;
5332                 }
5333                 lpfc_no_rpi(phba, ndlp);
5334 out:
5335                 if (phba->sli_rev != LPFC_SLI_REV4)
5336                         ndlp->nlp_rpi = 0;
5337                 clear_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag);
5338                 clear_bit(NLP_NPR_ADISC, &ndlp->nlp_flag);
5339                 if (acc_plogi)
5340                         clear_bit(NLP_LOGO_ACC, &ndlp->nlp_flag);
5341                 return 1;
5342         }
5343         clear_bit(NLP_LOGO_ACC, &ndlp->nlp_flag);
5344         return 0;
5345 }
5346
5347 /**
5348  * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
5349  * @phba: pointer to lpfc hba data structure.
5350  *
5351  * This routine is invoked to unregister all the currently registered RPIs
5352  * to the HBA.
5353  **/
5354 void
5355 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
5356 {
5357         struct lpfc_vport **vports;
5358         struct lpfc_nodelist *ndlp;
5359         int i;
5360         unsigned long iflags;
5361
5362         vports = lpfc_create_vport_work_array(phba);
5363         if (!vports) {
5364                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5365                                 "2884 Vport array allocation failed \n");
5366                 return;
5367         }
5368         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5369                 spin_lock_irqsave(&vports[i]->fc_nodes_list_lock, iflags);
5370                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
5371                         if (test_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag)) {
5372                                 /* The mempool_alloc might sleep */
5373                                 spin_unlock_irqrestore(&vports[i]->fc_nodes_list_lock,
5374                                                        iflags);
5375                                 lpfc_unreg_rpi(vports[i], ndlp);
5376                                 spin_lock_irqsave(&vports[i]->fc_nodes_list_lock,
5377                                                   iflags);
5378                         }
5379                 }
5380                 spin_unlock_irqrestore(&vports[i]->fc_nodes_list_lock, iflags);
5381         }
5382         lpfc_destroy_vport_work_array(phba, vports);
5383 }
5384
5385 void
5386 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
5387 {
5388         struct lpfc_hba  *phba  = vport->phba;
5389         LPFC_MBOXQ_t     *mbox;
5390         int rc;
5391
5392         if (phba->sli_rev == LPFC_SLI_REV4) {
5393                 lpfc_sli4_unreg_all_rpis(vport);
5394                 return;
5395         }
5396
5397         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5398         if (mbox) {
5399                 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT,
5400                                  mbox);
5401                 mbox->vport = vport;
5402                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5403                 mbox->ctx_ndlp = NULL;
5404                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5405                 if (rc != MBX_TIMEOUT)
5406                         mempool_free(mbox, phba->mbox_mem_pool);
5407
5408                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5409                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5410                                          "1836 Could not issue "
5411                                          "unreg_login(all_rpis) status %d\n",
5412                                          rc);
5413         }
5414 }
5415
5416 void
5417 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
5418 {
5419         struct lpfc_hba  *phba  = vport->phba;
5420         LPFC_MBOXQ_t     *mbox;
5421         int rc;
5422
5423         /* Unreg DID is an SLI3 operation. */
5424         if (phba->sli_rev > LPFC_SLI_REV3)
5425                 return;
5426
5427         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5428         if (mbox) {
5429                 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS,
5430                                mbox);
5431                 mbox->vport = vport;
5432                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5433                 mbox->ctx_ndlp = NULL;
5434                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5435                 if (rc != MBX_TIMEOUT)
5436                         mempool_free(mbox, phba->mbox_mem_pool);
5437
5438                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5439                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5440                                          "1815 Could not issue "
5441                                          "unreg_did (default rpis) status %d\n",
5442                                          rc);
5443         }
5444 }
5445
5446 /*
5447  * Free resources associated with LPFC_NODELIST entry
5448  * so it can be freed.
5449  */
5450 static int
5451 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5452 {
5453         struct lpfc_hba  *phba = vport->phba;
5454         LPFC_MBOXQ_t *mb, *nextmb;
5455
5456         /* Cleanup node for NPort <nlp_DID> */
5457         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5458                          "0900 Cleanup node for NPort x%x "
5459                          "Data: x%lx x%x x%x\n",
5460                          ndlp->nlp_DID, ndlp->nlp_flag,
5461                          ndlp->nlp_state, ndlp->nlp_rpi);
5462         lpfc_dequeue_node(vport, ndlp);
5463
5464         /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */
5465
5466         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
5467         if ((mb = phba->sli.mbox_active)) {
5468                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5469                    !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5470                    (ndlp == mb->ctx_ndlp)) {
5471                         mb->ctx_ndlp = NULL;
5472                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5473                 }
5474         }
5475
5476         spin_lock_irq(&phba->hbalock);
5477         /* Cleanup REG_LOGIN completions which are not yet processed */
5478         list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
5479                 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) ||
5480                         (mb->mbox_flag & LPFC_MBX_IMED_UNREG) ||
5481                         (ndlp != mb->ctx_ndlp))
5482                         continue;
5483
5484                 mb->ctx_ndlp = NULL;
5485                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5486         }
5487
5488         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
5489                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5490                    !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5491                     (ndlp == mb->ctx_ndlp)) {
5492                         list_del(&mb->list);
5493                         lpfc_mbox_rsrc_cleanup(phba, mb, MBOX_THD_LOCKED);
5494
5495                         /* Don't invoke lpfc_nlp_put. The driver is in
5496                          * lpfc_nlp_release context.
5497                          */
5498                 }
5499         }
5500         spin_unlock_irq(&phba->hbalock);
5501
5502         lpfc_els_abort(phba, ndlp);
5503
5504         clear_bit(NLP_DELAY_TMO, &ndlp->nlp_flag);
5505
5506         ndlp->nlp_last_elscmd = 0;
5507         del_timer_sync(&ndlp->nlp_delayfunc);
5508
5509         list_del_init(&ndlp->els_retry_evt.evt_listp);
5510         list_del_init(&ndlp->dev_loss_evt.evt_listp);
5511         list_del_init(&ndlp->recovery_evt.evt_listp);
5512         lpfc_cleanup_vports_rrqs(vport, ndlp);
5513         return 0;
5514 }
5515
5516 static int
5517 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
5518               uint32_t did)
5519 {
5520         D_ID mydid, ndlpdid, matchdid;
5521
5522         if (did == Bcast_DID)
5523                 return 0;
5524
5525         /* First check for Direct match */
5526         if (ndlp->nlp_DID == did)
5527                 return 1;
5528
5529         /* Next check for area/domain identically equals 0 match */
5530         mydid.un.word = vport->fc_myDID;
5531         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
5532                 return 0;
5533         }
5534
5535         matchdid.un.word = did;
5536         ndlpdid.un.word = ndlp->nlp_DID;
5537         if (matchdid.un.b.id == ndlpdid.un.b.id) {
5538                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
5539                     (mydid.un.b.area == matchdid.un.b.area)) {
5540                         /* This code is supposed to match the ID
5541                          * for a private loop device that is
5542                          * connect to fl_port. But we need to
5543                          * check that the port did not just go
5544                          * from pt2pt to fabric or we could end
5545                          * up matching ndlp->nlp_DID 000001 to
5546                          * fabric DID 0x20101
5547                          */
5548                         if ((ndlpdid.un.b.domain == 0) &&
5549                             (ndlpdid.un.b.area == 0)) {
5550                                 if (ndlpdid.un.b.id &&
5551                                     vport->phba->fc_topology ==
5552                                     LPFC_TOPOLOGY_LOOP)
5553                                         return 1;
5554                         }
5555                         return 0;
5556                 }
5557
5558                 matchdid.un.word = ndlp->nlp_DID;
5559                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
5560                     (mydid.un.b.area == ndlpdid.un.b.area)) {
5561                         if ((matchdid.un.b.domain == 0) &&
5562                             (matchdid.un.b.area == 0)) {
5563                                 if (matchdid.un.b.id)
5564                                         return 1;
5565                         }
5566                 }
5567         }
5568         return 0;
5569 }
5570
5571 /* Search for a nodelist entry */
5572 static struct lpfc_nodelist *
5573 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5574 {
5575         struct lpfc_nodelist *ndlp;
5576         uint32_t data1;
5577
5578         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5579                 if (lpfc_matchdid(vport, ndlp, did)) {
5580                         data1 = (((uint32_t)ndlp->nlp_state << 24) |
5581                                  ((uint32_t)ndlp->nlp_xri << 16) |
5582                                  ((uint32_t)ndlp->nlp_type << 8)
5583                                  );
5584                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE_VERBOSE,
5585                                          "0929 FIND node DID "
5586                                          "Data: x%px x%x x%lx x%x x%x x%px\n",
5587                                          ndlp, ndlp->nlp_DID,
5588                                          ndlp->nlp_flag, data1, ndlp->nlp_rpi,
5589                                          ndlp->active_rrqs_xri_bitmap);
5590                         return ndlp;
5591                 }
5592         }
5593
5594         /* FIND node did <did> NOT FOUND */
5595         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5596                          "0932 FIND node did x%x NOT FOUND.\n", did);
5597         return NULL;
5598 }
5599
5600 struct lpfc_nodelist *
5601 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5602 {
5603         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5604         struct lpfc_nodelist *ndlp;
5605         unsigned long iflags;
5606
5607         spin_lock_irqsave(shost->host_lock, iflags);
5608         ndlp = __lpfc_findnode_did(vport, did);
5609         spin_unlock_irqrestore(shost->host_lock, iflags);
5610         return ndlp;
5611 }
5612
5613 struct lpfc_nodelist *
5614 lpfc_findnode_mapped(struct lpfc_vport *vport)
5615 {
5616         struct lpfc_nodelist *ndlp;
5617         uint32_t data1;
5618         unsigned long iflags;
5619
5620         spin_lock_irqsave(&vport->fc_nodes_list_lock, iflags);
5621
5622         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5623                 if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE ||
5624                     ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
5625                         data1 = (((uint32_t)ndlp->nlp_state << 24) |
5626                                  ((uint32_t)ndlp->nlp_xri << 16) |
5627                                  ((uint32_t)ndlp->nlp_type << 8) |
5628                                  ((uint32_t)ndlp->nlp_rpi & 0xff));
5629                         spin_unlock_irqrestore(&vport->fc_nodes_list_lock,
5630                                                iflags);
5631                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE_VERBOSE,
5632                                          "2025 FIND node DID MAPPED "
5633                                          "Data: x%px x%x x%lx x%x x%px\n",
5634                                          ndlp, ndlp->nlp_DID,
5635                                          ndlp->nlp_flag, data1,
5636                                          ndlp->active_rrqs_xri_bitmap);
5637                         return ndlp;
5638                 }
5639         }
5640         spin_unlock_irqrestore(&vport->fc_nodes_list_lock, iflags);
5641
5642         /* FIND node did <did> NOT FOUND */
5643         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5644                          "2026 FIND mapped did NOT FOUND.\n");
5645         return NULL;
5646 }
5647
5648 struct lpfc_nodelist *
5649 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
5650 {
5651         struct lpfc_nodelist *ndlp;
5652
5653         ndlp = lpfc_findnode_did(vport, did);
5654         if (!ndlp) {
5655                 if (vport->phba->nvmet_support)
5656                         return NULL;
5657                 if (test_bit(FC_RSCN_MODE, &vport->fc_flag) &&
5658                     lpfc_rscn_payload_check(vport, did) == 0)
5659                         return NULL;
5660                 ndlp = lpfc_nlp_init(vport, did);
5661                 if (!ndlp)
5662                         return NULL;
5663                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5664
5665                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5666                                  "6453 Setup New Node 2B_DISC x%x "
5667                                  "Data:x%lx x%x x%lx\n",
5668                                  ndlp->nlp_DID, ndlp->nlp_flag,
5669                                  ndlp->nlp_state, vport->fc_flag);
5670
5671                 set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
5672                 return ndlp;
5673         }
5674
5675         /* The NVME Target does not want to actively manage an rport.
5676          * The goal is to allow the target to reset its state and clear
5677          * pending IO in preparation for the initiator to recover.
5678          */
5679         if (test_bit(FC_RSCN_MODE, &vport->fc_flag) &&
5680             !test_bit(FC_NDISC_ACTIVE, &vport->fc_flag)) {
5681                 if (lpfc_rscn_payload_check(vport, did)) {
5682
5683                         /* Since this node is marked for discovery,
5684                          * delay timeout is not needed.
5685                          */
5686                         lpfc_cancel_retry_delay_tmo(vport, ndlp);
5687
5688                         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5689                                          "6455 Setup RSCN Node 2B_DISC x%x "
5690                                          "Data:x%lx x%x x%lx\n",
5691                                          ndlp->nlp_DID, ndlp->nlp_flag,
5692                                          ndlp->nlp_state, vport->fc_flag);
5693
5694                         /* NVME Target mode waits until rport is known to be
5695                          * impacted by the RSCN before it transitions.  No
5696                          * active management - just go to NPR provided the
5697                          * node had a valid login.
5698                          */
5699                         if (vport->phba->nvmet_support)
5700                                 return ndlp;
5701
5702                         if (ndlp->nlp_state > NLP_STE_UNUSED_NODE &&
5703                             ndlp->nlp_state <= NLP_STE_PRLI_ISSUE) {
5704                                 lpfc_disc_state_machine(vport, ndlp, NULL,
5705                                                         NLP_EVT_DEVICE_RECOVERY);
5706                         }
5707
5708                         set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
5709                 } else {
5710                         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5711                                          "6456 Skip Setup RSCN Node x%x "
5712                                          "Data:x%lx x%x x%lx\n",
5713                                          ndlp->nlp_DID, ndlp->nlp_flag,
5714                                          ndlp->nlp_state, vport->fc_flag);
5715                         ndlp = NULL;
5716                 }
5717         } else {
5718                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5719                                  "6457 Setup Active Node 2B_DISC x%x "
5720                                  "Data:x%lx x%x x%lx\n",
5721                                  ndlp->nlp_DID, ndlp->nlp_flag,
5722                                  ndlp->nlp_state, vport->fc_flag);
5723
5724                 /* If the initiator received a PLOGI from this NPort or if the
5725                  * initiator is already in the process of discovery on it,
5726                  * there's no need to try to discover it again.
5727                  */
5728                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
5729                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5730                     (!vport->phba->nvmet_support &&
5731                      test_bit(NLP_RCV_PLOGI, &ndlp->nlp_flag)))
5732                         return NULL;
5733
5734                 if (vport->phba->nvmet_support)
5735                         return ndlp;
5736
5737                 /* Moving to NPR state clears unsolicited flags and
5738                  * allows for rediscovery
5739                  */
5740                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5741                 set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
5742         }
5743         return ndlp;
5744 }
5745
5746 /* Build a list of nodes to discover based on the loopmap */
5747 void
5748 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
5749 {
5750         struct lpfc_hba  *phba = vport->phba;
5751         int j;
5752         uint32_t alpa, index;
5753
5754         if (!lpfc_is_link_up(phba))
5755                 return;
5756
5757         if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
5758                 return;
5759
5760         /* Check for loop map present or not */
5761         if (phba->alpa_map[0]) {
5762                 for (j = 1; j <= phba->alpa_map[0]; j++) {
5763                         alpa = phba->alpa_map[j];
5764                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
5765                                 continue;
5766                         lpfc_setup_disc_node(vport, alpa);
5767                 }
5768         } else {
5769                 /* No alpamap, so try all alpa's */
5770                 for (j = 0; j < FC_MAXLOOP; j++) {
5771                         /* If cfg_scan_down is set, start from highest
5772                          * ALPA (0xef) to lowest (0x1).
5773                          */
5774                         if (vport->cfg_scan_down)
5775                                 index = j;
5776                         else
5777                                 index = FC_MAXLOOP - j - 1;
5778                         alpa = lpfcAlpaArray[index];
5779                         if ((vport->fc_myDID & 0xff) == alpa)
5780                                 continue;
5781                         lpfc_setup_disc_node(vport, alpa);
5782                 }
5783         }
5784         return;
5785 }
5786
5787 /* SLI3 only */
5788 void
5789 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
5790 {
5791         LPFC_MBOXQ_t *mbox;
5792         struct lpfc_sli *psli = &phba->sli;
5793         struct lpfc_sli_ring *extra_ring = &psli->sli3_ring[LPFC_EXTRA_RING];
5794         struct lpfc_sli_ring *fcp_ring   = &psli->sli3_ring[LPFC_FCP_RING];
5795         int  rc;
5796
5797         /*
5798          * if it's not a physical port or if we already send
5799          * clear_la then don't send it.
5800          */
5801         if ((phba->link_state >= LPFC_CLEAR_LA) ||
5802             (vport->port_type != LPFC_PHYSICAL_PORT) ||
5803                 (phba->sli_rev == LPFC_SLI_REV4))
5804                 return;
5805
5806                         /* Link up discovery */
5807         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
5808                 phba->link_state = LPFC_CLEAR_LA;
5809                 lpfc_clear_la(phba, mbox);
5810                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
5811                 mbox->vport = vport;
5812                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5813                 if (rc == MBX_NOT_FINISHED) {
5814                         mempool_free(mbox, phba->mbox_mem_pool);
5815                         lpfc_disc_flush_list(vport);
5816                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5817                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5818                         phba->link_state = LPFC_HBA_ERROR;
5819                 }
5820         }
5821 }
5822
5823 /* Reg_vpi to tell firmware to resume normal operations */
5824 void
5825 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
5826 {
5827         LPFC_MBOXQ_t *regvpimbox;
5828
5829         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5830         if (regvpimbox) {
5831                 lpfc_reg_vpi(vport, regvpimbox);
5832                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
5833                 regvpimbox->vport = vport;
5834                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
5835                                         == MBX_NOT_FINISHED) {
5836                         mempool_free(regvpimbox, phba->mbox_mem_pool);
5837                 }
5838         }
5839 }
5840
5841 /* Start Link up / RSCN discovery on NPR nodes */
5842 void
5843 lpfc_disc_start(struct lpfc_vport *vport)
5844 {
5845         struct lpfc_hba  *phba = vport->phba;
5846         uint32_t num_sent;
5847         uint32_t clear_la_pending;
5848
5849         if (!lpfc_is_link_up(phba)) {
5850                 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
5851                                  "3315 Link is not up %x\n",
5852                                  phba->link_state);
5853                 return;
5854         }
5855
5856         if (phba->link_state == LPFC_CLEAR_LA)
5857                 clear_la_pending = 1;
5858         else
5859                 clear_la_pending = 0;
5860
5861         if (vport->port_state < LPFC_VPORT_READY)
5862                 vport->port_state = LPFC_DISC_AUTH;
5863
5864         lpfc_set_disctmo(vport);
5865
5866         vport->fc_prevDID = vport->fc_myDID;
5867         vport->num_disc_nodes = 0;
5868
5869         /* Start Discovery state <hba_state> */
5870         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5871                          "0202 Start Discovery port state x%x "
5872                          "flg x%lx Data: x%x x%x x%x\n",
5873                          vport->port_state, vport->fc_flag,
5874                          atomic_read(&vport->fc_plogi_cnt),
5875                          atomic_read(&vport->fc_adisc_cnt),
5876                          atomic_read(&vport->fc_npr_cnt));
5877
5878         /* First do ADISCs - if any */
5879         num_sent = lpfc_els_disc_adisc(vport);
5880
5881         if (num_sent)
5882                 return;
5883
5884         /* Register the VPI for SLI3, NPIV only. */
5885         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
5886             !test_bit(FC_PT2PT, &vport->fc_flag) &&
5887             !test_bit(FC_RSCN_MODE, &vport->fc_flag) &&
5888             (phba->sli_rev < LPFC_SLI_REV4)) {
5889                 lpfc_issue_clear_la(phba, vport);
5890                 lpfc_issue_reg_vpi(phba, vport);
5891                 return;
5892         }
5893
5894         /*
5895          * For SLI2, we need to set port_state to READY and continue
5896          * discovery.
5897          */
5898         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
5899                 /* If we get here, there is nothing to ADISC */
5900                 lpfc_issue_clear_la(phba, vport);
5901
5902                 if (!test_bit(FC_ABORT_DISCOVERY, &vport->fc_flag)) {
5903                         vport->num_disc_nodes = 0;
5904                         /* go thru NPR nodes and issue ELS PLOGIs */
5905                         if (atomic_read(&vport->fc_npr_cnt))
5906                                 lpfc_els_disc_plogi(vport);
5907
5908                         if (!vport->num_disc_nodes) {
5909                                 clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag);
5910                                 lpfc_can_disctmo(vport);
5911                         }
5912                 }
5913                 vport->port_state = LPFC_VPORT_READY;
5914         } else {
5915                 /* Next do PLOGIs - if any */
5916                 num_sent = lpfc_els_disc_plogi(vport);
5917
5918                 if (num_sent)
5919                         return;
5920
5921                 if (test_bit(FC_RSCN_MODE, &vport->fc_flag)) {
5922                         /* Check to see if more RSCNs came in while we
5923                          * were processing this one.
5924                          */
5925                         if (vport->fc_rscn_id_cnt == 0 &&
5926                             !test_bit(FC_RSCN_DISCOVERY, &vport->fc_flag)) {
5927                                 clear_bit(FC_RSCN_MODE, &vport->fc_flag);
5928                                 lpfc_can_disctmo(vport);
5929                         } else {
5930                                 lpfc_els_handle_rscn(vport);
5931                         }
5932                 }
5933         }
5934         return;
5935 }
5936
5937 /*
5938  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
5939  *  ring the match the sppecified nodelist.
5940  */
5941 static void
5942 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
5943 {
5944         LIST_HEAD(completions);
5945         struct lpfc_iocbq    *iocb, *next_iocb;
5946         struct lpfc_sli_ring *pring;
5947         u32 ulp_command;
5948
5949         pring = lpfc_phba_elsring(phba);
5950         if (unlikely(!pring))
5951                 return;
5952
5953         /* Error matching iocb on txq or txcmplq
5954          * First check the txq.
5955          */
5956         spin_lock_irq(&phba->hbalock);
5957         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
5958                 if (iocb->ndlp != ndlp)
5959                         continue;
5960
5961                 ulp_command = get_job_cmnd(phba, iocb);
5962
5963                 if (ulp_command == CMD_ELS_REQUEST64_CR ||
5964                     ulp_command == CMD_XMIT_ELS_RSP64_CX) {
5965
5966                         list_move_tail(&iocb->list, &completions);
5967                 }
5968         }
5969
5970         /* Next check the txcmplq */
5971         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
5972                 if (iocb->ndlp != ndlp)
5973                         continue;
5974
5975                 ulp_command = get_job_cmnd(phba, iocb);
5976
5977                 if (ulp_command == CMD_ELS_REQUEST64_CR ||
5978                     ulp_command == CMD_XMIT_ELS_RSP64_CX) {
5979                         lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL);
5980                 }
5981         }
5982         spin_unlock_irq(&phba->hbalock);
5983
5984         /* Make sure HBA is alive */
5985         lpfc_issue_hb_tmo(phba);
5986
5987         /* Cancel all the IOCBs from the completions list */
5988         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5989                               IOERR_SLI_ABORTED);
5990 }
5991
5992 static void
5993 lpfc_disc_flush_list(struct lpfc_vport *vport)
5994 {
5995         struct lpfc_nodelist *ndlp, *next_ndlp;
5996         struct lpfc_hba *phba = vport->phba;
5997
5998         if (atomic_read(&vport->fc_plogi_cnt) ||
5999             atomic_read(&vport->fc_adisc_cnt)) {
6000                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6001                                          nlp_listp) {
6002                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
6003                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
6004                                 lpfc_free_tx(phba, ndlp);
6005                         }
6006                 }
6007         }
6008 }
6009
6010 /*
6011  * lpfc_notify_xport_npr - notifies xport of node disappearance
6012  * @vport: Pointer to Virtual Port object.
6013  *
6014  * Transitions all ndlps to NPR state.  When lpfc_nlp_set_state
6015  * calls lpfc_nlp_state_cleanup, the ndlp->rport is unregistered
6016  * and transport notified that the node is gone.
6017  * Return Code:
6018  *      none
6019  */
6020 static void
6021 lpfc_notify_xport_npr(struct lpfc_vport *vport)
6022 {
6023         struct lpfc_nodelist *ndlp, *next_ndlp;
6024
6025         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6026                                  nlp_listp) {
6027                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
6028         }
6029 }
6030 void
6031 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
6032 {
6033         lpfc_els_flush_rscn(vport);
6034         lpfc_els_flush_cmd(vport);
6035         lpfc_disc_flush_list(vport);
6036         if (pci_channel_offline(vport->phba->pcidev))
6037                 lpfc_notify_xport_npr(vport);
6038 }
6039
6040 /*****************************************************************************/
6041 /*
6042  * NAME:     lpfc_disc_timeout
6043  *
6044  * FUNCTION: Fibre Channel driver discovery timeout routine.
6045  *
6046  * EXECUTION ENVIRONMENT: interrupt only
6047  *
6048  * CALLED FROM:
6049  *      Timer function
6050  *
6051  * RETURNS:
6052  *      none
6053  */
6054 /*****************************************************************************/
6055 void
6056 lpfc_disc_timeout(struct timer_list *t)
6057 {
6058         struct lpfc_vport *vport = from_timer(vport, t, fc_disctmo);
6059         struct lpfc_hba   *phba = vport->phba;
6060         uint32_t tmo_posted;
6061         unsigned long flags = 0;
6062
6063         if (unlikely(!phba))
6064                 return;
6065
6066         spin_lock_irqsave(&vport->work_port_lock, flags);
6067         tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
6068         if (!tmo_posted)
6069                 vport->work_port_events |= WORKER_DISC_TMO;
6070         spin_unlock_irqrestore(&vport->work_port_lock, flags);
6071
6072         if (!tmo_posted)
6073                 lpfc_worker_wake_up(phba);
6074         return;
6075 }
6076
6077 static void
6078 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
6079 {
6080         struct lpfc_hba  *phba = vport->phba;
6081         struct lpfc_sli  *psli = &phba->sli;
6082         struct lpfc_nodelist *ndlp, *next_ndlp;
6083         LPFC_MBOXQ_t *initlinkmbox;
6084         int rc, clrlaerr = 0;
6085
6086         if (!test_and_clear_bit(FC_DISC_TMO, &vport->fc_flag))
6087                 return;
6088
6089         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6090                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
6091                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
6092
6093         switch (vport->port_state) {
6094
6095         case LPFC_LOCAL_CFG_LINK:
6096                 /*
6097                  * port_state is identically  LPFC_LOCAL_CFG_LINK while
6098                  * waiting for FAN timeout
6099                  */
6100                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
6101                                  "0221 FAN timeout\n");
6102
6103                 /* Start discovery by sending FLOGI, clean up old rpis */
6104                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6105                                          nlp_listp) {
6106                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
6107                                 continue;
6108                         if (ndlp->nlp_type & NLP_FABRIC) {
6109                                 /* Clean up the ndlp on Fabric connections */
6110                                 lpfc_drop_node(vport, ndlp);
6111
6112                         } else if (!test_bit(NLP_NPR_ADISC, &ndlp->nlp_flag)) {
6113                                 /* Fail outstanding IO now since device
6114                                  * is marked for PLOGI.
6115                                  */
6116                                 lpfc_unreg_rpi(vport, ndlp);
6117                         }
6118                 }
6119                 if (vport->port_state != LPFC_FLOGI) {
6120                         if (phba->sli_rev <= LPFC_SLI_REV3)
6121                                 lpfc_initial_flogi(vport);
6122                         else
6123                                 lpfc_issue_init_vfi(vport);
6124                         return;
6125                 }
6126                 break;
6127
6128         case LPFC_FDISC:
6129         case LPFC_FLOGI:
6130         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
6131                 /* Initial FLOGI timeout */
6132                 lpfc_printf_vlog(vport, KERN_ERR,
6133                                  LOG_TRACE_EVENT,
6134                                  "0222 Initial %s timeout\n",
6135                                  vport->vpi ? "FDISC" : "FLOGI");
6136
6137                 /* Assume no Fabric and go on with discovery.
6138                  * Check for outstanding ELS FLOGI to abort.
6139                  */
6140
6141                 /* FLOGI failed, so just use loop map to make discovery list */
6142                 lpfc_disc_list_loopmap(vport);
6143
6144                 /* Start discovery */
6145                 lpfc_disc_start(vport);
6146                 break;
6147
6148         case LPFC_FABRIC_CFG_LINK:
6149         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
6150            NameServer login */
6151                 lpfc_printf_vlog(vport, KERN_ERR,
6152                                  LOG_TRACE_EVENT,
6153                                  "0223 Timeout while waiting for "
6154                                  "NameServer login\n");
6155                 /* Next look for NameServer ndlp */
6156                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
6157                 if (ndlp)
6158                         lpfc_els_abort(phba, ndlp);
6159
6160                 /* ReStart discovery */
6161                 goto restart_disc;
6162
6163         case LPFC_NS_QRY:
6164         /* Check for wait for NameServer Rsp timeout */
6165                 lpfc_printf_vlog(vport, KERN_ERR,
6166                                  LOG_TRACE_EVENT,
6167                                  "0224 NameServer Query timeout "
6168                                  "Data: x%x x%x\n",
6169                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
6170
6171                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
6172                         /* Try it one more time */
6173                         vport->fc_ns_retry++;
6174                         vport->gidft_inp = 0;
6175                         rc = lpfc_issue_gidft(vport);
6176                         if (rc == 0)
6177                                 break;
6178                 }
6179                 vport->fc_ns_retry = 0;
6180
6181 restart_disc:
6182                 /*
6183                  * Discovery is over.
6184                  * set port_state to PORT_READY if SLI2.
6185                  * cmpl_reg_vpi will set port_state to READY for SLI3.
6186                  */
6187                 if (phba->sli_rev < LPFC_SLI_REV4) {
6188                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
6189                                 lpfc_issue_reg_vpi(phba, vport);
6190                         else  {
6191                                 lpfc_issue_clear_la(phba, vport);
6192                                 vport->port_state = LPFC_VPORT_READY;
6193                         }
6194                 }
6195
6196                 /* Setup and issue mailbox INITIALIZE LINK command */
6197                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6198                 if (!initlinkmbox) {
6199                         lpfc_printf_vlog(vport, KERN_ERR,
6200                                          LOG_TRACE_EVENT,
6201                                          "0206 Device Discovery "
6202                                          "completion error\n");
6203                         phba->link_state = LPFC_HBA_ERROR;
6204                         break;
6205                 }
6206
6207                 lpfc_linkdown(phba);
6208                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
6209                                phba->cfg_link_speed);
6210                 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
6211                 initlinkmbox->vport = vport;
6212                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
6213                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
6214                 lpfc_set_loopback_flag(phba);
6215                 if (rc == MBX_NOT_FINISHED)
6216                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
6217
6218                 break;
6219
6220         case LPFC_DISC_AUTH:
6221         /* Node Authentication timeout */
6222                 lpfc_printf_vlog(vport, KERN_ERR,
6223                                  LOG_TRACE_EVENT,
6224                                  "0227 Node Authentication timeout\n");
6225                 lpfc_disc_flush_list(vport);
6226
6227                 /*
6228                  * set port_state to PORT_READY if SLI2.
6229                  * cmpl_reg_vpi will set port_state to READY for SLI3.
6230                  */
6231                 if (phba->sli_rev < LPFC_SLI_REV4) {
6232                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
6233                                 lpfc_issue_reg_vpi(phba, vport);
6234                         else  { /* NPIV Not enabled */
6235                                 lpfc_issue_clear_la(phba, vport);
6236                                 vport->port_state = LPFC_VPORT_READY;
6237                         }
6238                 }
6239                 break;
6240
6241         case LPFC_VPORT_READY:
6242                 if (test_bit(FC_RSCN_MODE, &vport->fc_flag)) {
6243                         lpfc_printf_vlog(vport, KERN_ERR,
6244                                          LOG_TRACE_EVENT,
6245                                          "0231 RSCN timeout Data: x%x "
6246                                          "x%x x%x x%x\n",
6247                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY,
6248                                          vport->port_state, vport->gidft_inp);
6249
6250                         /* Cleanup any outstanding ELS commands */
6251                         lpfc_els_flush_cmd(vport);
6252
6253                         lpfc_els_flush_rscn(vport);
6254                         lpfc_disc_flush_list(vport);
6255                 }
6256                 break;
6257
6258         default:
6259                 lpfc_printf_vlog(vport, KERN_ERR,
6260                                  LOG_TRACE_EVENT,
6261                                  "0273 Unexpected discovery timeout, "
6262                                  "vport State x%x\n", vport->port_state);
6263                 break;
6264         }
6265
6266         switch (phba->link_state) {
6267         case LPFC_CLEAR_LA:
6268                                 /* CLEAR LA timeout */
6269                 lpfc_printf_vlog(vport, KERN_ERR,
6270                                  LOG_TRACE_EVENT,
6271                                  "0228 CLEAR LA timeout\n");
6272                 clrlaerr = 1;
6273                 break;
6274
6275         case LPFC_LINK_UP:
6276                 lpfc_issue_clear_la(phba, vport);
6277                 fallthrough;
6278         case LPFC_LINK_UNKNOWN:
6279         case LPFC_WARM_START:
6280         case LPFC_INIT_START:
6281         case LPFC_INIT_MBX_CMDS:
6282         case LPFC_LINK_DOWN:
6283         case LPFC_HBA_ERROR:
6284                 lpfc_printf_vlog(vport, KERN_ERR,
6285                                  LOG_TRACE_EVENT,
6286                                  "0230 Unexpected timeout, hba link "
6287                                  "state x%x\n", phba->link_state);
6288                 clrlaerr = 1;
6289                 break;
6290
6291         case LPFC_HBA_READY:
6292                 break;
6293         }
6294
6295         if (clrlaerr) {
6296                 lpfc_disc_flush_list(vport);
6297                 if (phba->sli_rev != LPFC_SLI_REV4) {
6298                         psli->sli3_ring[(LPFC_EXTRA_RING)].flag &=
6299                                 ~LPFC_STOP_IOCB_EVENT;
6300                         psli->sli3_ring[LPFC_FCP_RING].flag &=
6301                                 ~LPFC_STOP_IOCB_EVENT;
6302                 }
6303                 vport->port_state = LPFC_VPORT_READY;
6304         }
6305         return;
6306 }
6307
6308 /*
6309  * This routine handles processing a NameServer REG_LOGIN mailbox
6310  * command upon completion. It is setup in the LPFC_MBOXQ
6311  * as the completion routine when the command is
6312  * handed off to the SLI layer.
6313  */
6314 void
6315 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
6316 {
6317         MAILBOX_t *mb = &pmb->u.mb;
6318         struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
6319         struct lpfc_vport    *vport = pmb->vport;
6320
6321         pmb->ctx_ndlp = NULL;
6322
6323         if (phba->sli_rev < LPFC_SLI_REV4)
6324                 ndlp->nlp_rpi = mb->un.varWords[0];
6325         set_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag);
6326         ndlp->nlp_type |= NLP_FABRIC;
6327         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
6328         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
6329                          "0004 rpi:%x DID:%x flg:%lx %d x%px\n",
6330                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
6331                          kref_read(&ndlp->kref),
6332                          ndlp);
6333         /*
6334          * Start issuing Fabric-Device Management Interface (FDMI) command to
6335          * 0xfffffa (FDMI well known port).
6336          * DHBA -> DPRT -> RHBA -> RPA  (physical port)
6337          * DPRT -> RPRT (vports)
6338          */
6339         if (vport->port_type == LPFC_PHYSICAL_PORT) {
6340                 phba->link_flag &= ~LS_CT_VEN_RPA; /* For extra Vendor RPA */
6341                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA, 0);
6342         } else {
6343                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DPRT, 0);
6344         }
6345
6346
6347         /* decrement the node reference count held for this callback
6348          * function.
6349          */
6350         lpfc_nlp_put(ndlp);
6351         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
6352         return;
6353 }
6354
6355 static int
6356 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
6357 {
6358         uint16_t *rpi = param;
6359
6360         return ndlp->nlp_rpi == *rpi;
6361 }
6362
6363 static int
6364 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
6365 {
6366         return memcmp(&ndlp->nlp_portname, param,
6367                       sizeof(ndlp->nlp_portname)) == 0;
6368 }
6369
6370 static struct lpfc_nodelist *
6371 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
6372 {
6373         struct lpfc_nodelist *ndlp;
6374
6375         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
6376                 if (filter(ndlp, param)) {
6377                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE_VERBOSE,
6378                                          "3185 FIND node filter %ps DID "
6379                                          "ndlp x%px did x%x flg x%lx st x%x "
6380                                          "xri x%x type x%x rpi x%x\n",
6381                                          filter, ndlp, ndlp->nlp_DID,
6382                                          ndlp->nlp_flag, ndlp->nlp_state,
6383                                          ndlp->nlp_xri, ndlp->nlp_type,
6384                                          ndlp->nlp_rpi);
6385                         return ndlp;
6386                 }
6387         }
6388         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6389                          "3186 FIND node filter %ps NOT FOUND.\n", filter);
6390         return NULL;
6391 }
6392
6393 /*
6394  * This routine looks up the ndlp lists for the given RPI. If rpi found it
6395  * returns the node list element pointer else return NULL.
6396  */
6397 struct lpfc_nodelist *
6398 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6399 {
6400         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
6401 }
6402
6403 /*
6404  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
6405  * returns the node element list pointer else return NULL.
6406  */
6407 struct lpfc_nodelist *
6408 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
6409 {
6410         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6411         struct lpfc_nodelist *ndlp;
6412
6413         spin_lock_irq(shost->host_lock);
6414         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
6415         spin_unlock_irq(shost->host_lock);
6416         return ndlp;
6417 }
6418
6419 /*
6420  * This routine looks up the ndlp lists for the given RPI. If the rpi
6421  * is found, the routine returns the node element list pointer else
6422  * return NULL.
6423  */
6424 struct lpfc_nodelist *
6425 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6426 {
6427         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6428         struct lpfc_nodelist *ndlp;
6429         unsigned long flags;
6430
6431         spin_lock_irqsave(shost->host_lock, flags);
6432         ndlp = __lpfc_findnode_rpi(vport, rpi);
6433         spin_unlock_irqrestore(shost->host_lock, flags);
6434         return ndlp;
6435 }
6436
6437 /**
6438  * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
6439  * @phba: pointer to lpfc hba data structure.
6440  * @vpi: the physical host virtual N_Port identifier.
6441  *
6442  * This routine finds a vport on a HBA (referred by @phba) through a
6443  * @vpi. The function walks the HBA's vport list and returns the address
6444  * of the vport with the matching @vpi.
6445  *
6446  * Return code
6447  *    NULL - No vport with the matching @vpi found
6448  *    Otherwise - Address to the vport with the matching @vpi.
6449  **/
6450 struct lpfc_vport *
6451 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
6452 {
6453         struct lpfc_vport *vport;
6454         unsigned long flags;
6455         int i = 0;
6456
6457         /* The physical ports are always vpi 0 - translate is unnecessary. */
6458         if (vpi > 0) {
6459                 /*
6460                  * Translate the physical vpi to the logical vpi.  The
6461                  * vport stores the logical vpi.
6462                  */
6463                 for (i = 0; i <= phba->max_vpi; i++) {
6464                         if (vpi == phba->vpi_ids[i])
6465                                 break;
6466                 }
6467
6468                 if (i > phba->max_vpi) {
6469                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6470                                         "2936 Could not find Vport mapped "
6471                                         "to vpi %d\n", vpi);
6472                         return NULL;
6473                 }
6474         }
6475
6476         spin_lock_irqsave(&phba->port_list_lock, flags);
6477         list_for_each_entry(vport, &phba->port_list, listentry) {
6478                 if (vport->vpi == i) {
6479                         spin_unlock_irqrestore(&phba->port_list_lock, flags);
6480                         return vport;
6481                 }
6482         }
6483         spin_unlock_irqrestore(&phba->port_list_lock, flags);
6484         return NULL;
6485 }
6486
6487 struct lpfc_nodelist *
6488 lpfc_nlp_init(struct lpfc_vport *vport, uint32_t did)
6489 {
6490         struct lpfc_nodelist *ndlp;
6491         int rpi = LPFC_RPI_ALLOC_ERROR;
6492
6493         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6494                 rpi = lpfc_sli4_alloc_rpi(vport->phba);
6495                 if (rpi == LPFC_RPI_ALLOC_ERROR)
6496                         return NULL;
6497         }
6498
6499         ndlp = mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
6500         if (!ndlp) {
6501                 if (vport->phba->sli_rev == LPFC_SLI_REV4)
6502                         lpfc_sli4_free_rpi(vport->phba, rpi);
6503                 return NULL;
6504         }
6505
6506         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
6507
6508         spin_lock_init(&ndlp->lock);
6509
6510         lpfc_initialize_node(vport, ndlp, did);
6511         INIT_LIST_HEAD(&ndlp->nlp_listp);
6512         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6513                 ndlp->nlp_rpi = rpi;
6514                 lpfc_printf_vlog(vport, KERN_INFO,
6515                                  LOG_ELS | LOG_NODE | LOG_DISCOVERY,
6516                                  "0007 Init New ndlp x%px, rpi:x%x DID:x%x "
6517                                  "flg:x%lx refcnt:%d\n",
6518                                  ndlp, ndlp->nlp_rpi, ndlp->nlp_DID,
6519                                  ndlp->nlp_flag, kref_read(&ndlp->kref));
6520
6521                 ndlp->active_rrqs_xri_bitmap =
6522                                 mempool_alloc(vport->phba->active_rrq_pool,
6523                                               GFP_KERNEL);
6524                 if (ndlp->active_rrqs_xri_bitmap)
6525                         memset(ndlp->active_rrqs_xri_bitmap, 0,
6526                                ndlp->phba->cfg_rrq_xri_bitmap_sz);
6527         }
6528
6529
6530
6531         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
6532                 "node init:       did:x%x",
6533                 ndlp->nlp_DID, 0, 0);
6534
6535         return ndlp;
6536 }
6537
6538 /* This routine releases all resources associated with a specifc NPort's ndlp
6539  * and mempool_free's the nodelist.
6540  */
6541 static void
6542 lpfc_nlp_release(struct kref *kref)
6543 {
6544         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
6545                                                   kref);
6546         struct lpfc_vport *vport = ndlp->vport;
6547
6548         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6549                 "node release:    did:x%x flg:x%lx type:x%x",
6550                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
6551
6552         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6553                          "0279 %s: ndlp: x%px did %x refcnt:%d rpi:%x\n",
6554                          __func__, ndlp, ndlp->nlp_DID,
6555                          kref_read(&ndlp->kref), ndlp->nlp_rpi);
6556
6557         /* remove ndlp from action. */
6558         lpfc_cancel_retry_delay_tmo(vport, ndlp);
6559         lpfc_cleanup_node(vport, ndlp);
6560
6561         /* All nodes are initialized with an RPI that needs to be released
6562          * now. All references are gone and the node has been dequeued.
6563          */
6564         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6565                 lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi);
6566                 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
6567         }
6568
6569         /* The node is not freed back to memory, it is released to a pool so
6570          * the node fields need to be cleaned up.
6571          */
6572         ndlp->vport = NULL;
6573         ndlp->nlp_state = NLP_STE_FREED_NODE;
6574         ndlp->nlp_flag = 0;
6575         ndlp->fc4_xpt_flags = 0;
6576
6577         /* free ndlp memory for final ndlp release */
6578         if (ndlp->phba->sli_rev == LPFC_SLI_REV4)
6579                 mempool_free(ndlp->active_rrqs_xri_bitmap,
6580                                 ndlp->phba->active_rrq_pool);
6581         mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
6582 }
6583
6584 /* This routine bumps the reference count for a ndlp structure to ensure
6585  * that one discovery thread won't free a ndlp while another discovery thread
6586  * is using it.
6587  */
6588 struct lpfc_nodelist *
6589 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
6590 {
6591         unsigned long flags;
6592
6593         if (ndlp) {
6594                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6595                         "node get:        did:x%x flg:x%lx refcnt:x%x",
6596                         ndlp->nlp_DID, ndlp->nlp_flag,
6597                         kref_read(&ndlp->kref));
6598
6599                 /* The check of ndlp usage to prevent incrementing the
6600                  * ndlp reference count that is in the process of being
6601                  * released.
6602                  */
6603                 spin_lock_irqsave(&ndlp->lock, flags);
6604                 if (!kref_get_unless_zero(&ndlp->kref)) {
6605                         spin_unlock_irqrestore(&ndlp->lock, flags);
6606                         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
6607                                 "0276 %s: ndlp:x%px refcnt:%d\n",
6608                                 __func__, (void *)ndlp, kref_read(&ndlp->kref));
6609                         return NULL;
6610                 }
6611                 spin_unlock_irqrestore(&ndlp->lock, flags);
6612         } else {
6613                 WARN_ONCE(!ndlp, "**** %s, get ref on NULL ndlp!", __func__);
6614         }
6615
6616         return ndlp;
6617 }
6618
6619 /* This routine decrements the reference count for a ndlp structure. If the
6620  * count goes to 0, this indicates the associated nodelist should be freed.
6621  */
6622 int
6623 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
6624 {
6625         if (ndlp) {
6626                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6627                                 "node put:        did:x%x flg:x%lx refcnt:x%x",
6628                                 ndlp->nlp_DID, ndlp->nlp_flag,
6629                                 kref_read(&ndlp->kref));
6630         } else {
6631                 WARN_ONCE(!ndlp, "**** %s, put ref on NULL ndlp!", __func__);
6632         }
6633
6634         return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0;
6635 }
6636
6637 /**
6638  * lpfc_fcf_inuse - Check if FCF can be unregistered.
6639  * @phba: Pointer to hba context object.
6640  *
6641  * This function iterate through all FC nodes associated
6642  * will all vports to check if there is any node with
6643  * fc_rports associated with it. If there is an fc_rport
6644  * associated with the node, then the node is either in
6645  * discovered state or its devloss_timer is pending.
6646  */
6647 static int
6648 lpfc_fcf_inuse(struct lpfc_hba *phba)
6649 {
6650         struct lpfc_vport **vports;
6651         int i, ret = 0;
6652         struct lpfc_nodelist *ndlp;
6653         unsigned long iflags;
6654
6655         vports = lpfc_create_vport_work_array(phba);
6656
6657         /* If driver cannot allocate memory, indicate fcf is in use */
6658         if (!vports)
6659                 return 1;
6660
6661         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6662                 /*
6663                  * IF the CVL_RCVD bit is not set then we have sent the
6664                  * flogi.
6665                  * If dev_loss fires while we are waiting we do not want to
6666                  * unreg the fcf.
6667                  */
6668                 if (!test_bit(FC_VPORT_CVL_RCVD, &vports[i]->fc_flag)) {
6669                         ret =  1;
6670                         goto out;
6671                 }
6672                 spin_lock_irqsave(&vports[i]->fc_nodes_list_lock, iflags);
6673                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
6674                         if (ndlp->rport &&
6675                           (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
6676                                 ret = 1;
6677                                 spin_unlock_irqrestore(&vports[i]->fc_nodes_list_lock,
6678                                                        iflags);
6679                                 goto out;
6680                         } else if (test_bit(NLP_RPI_REGISTERED,
6681                                             &ndlp->nlp_flag)) {
6682                                 ret = 1;
6683                                 lpfc_printf_log(phba, KERN_INFO,
6684                                                 LOG_NODE | LOG_DISCOVERY,
6685                                                 "2624 RPI %x DID %x flag %lx "
6686                                                 "still logged in\n",
6687                                                 ndlp->nlp_rpi, ndlp->nlp_DID,
6688                                                 ndlp->nlp_flag);
6689                         }
6690                 }
6691                 spin_unlock_irqrestore(&vports[i]->fc_nodes_list_lock, iflags);
6692         }
6693 out:
6694         lpfc_destroy_vport_work_array(phba, vports);
6695         return ret;
6696 }
6697
6698 /**
6699  * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
6700  * @phba: Pointer to hba context object.
6701  * @mboxq: Pointer to mailbox object.
6702  *
6703  * This function frees memory associated with the mailbox command.
6704  */
6705 void
6706 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6707 {
6708         struct lpfc_vport *vport = mboxq->vport;
6709
6710         if (mboxq->u.mb.mbxStatus) {
6711                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6712                                 "2555 UNREG_VFI mbxStatus error x%x "
6713                                 "HBA state x%x\n",
6714                                 mboxq->u.mb.mbxStatus, vport->port_state);
6715         }
6716         clear_bit(FC_VFI_REGISTERED, &phba->pport->fc_flag);
6717         mempool_free(mboxq, phba->mbox_mem_pool);
6718         return;
6719 }
6720
6721 /**
6722  * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
6723  * @phba: Pointer to hba context object.
6724  * @mboxq: Pointer to mailbox object.
6725  *
6726  * This function frees memory associated with the mailbox command.
6727  */
6728 static void
6729 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6730 {
6731         struct lpfc_vport *vport = mboxq->vport;
6732
6733         if (mboxq->u.mb.mbxStatus) {
6734                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6735                                 "2550 UNREG_FCFI mbxStatus error x%x "
6736                                 "HBA state x%x\n",
6737                                 mboxq->u.mb.mbxStatus, vport->port_state);
6738         }
6739         mempool_free(mboxq, phba->mbox_mem_pool);
6740         return;
6741 }
6742
6743 /**
6744  * lpfc_unregister_fcf_prep - Unregister fcf record preparation
6745  * @phba: Pointer to hba context object.
6746  *
6747  * This function prepare the HBA for unregistering the currently registered
6748  * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
6749  * VFIs.
6750  */
6751 int
6752 lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
6753 {
6754         struct lpfc_vport **vports;
6755         struct lpfc_nodelist *ndlp;
6756         struct Scsi_Host *shost;
6757         int i = 0, rc;
6758
6759         /* Unregister RPIs */
6760         if (lpfc_fcf_inuse(phba))
6761                 lpfc_unreg_hba_rpis(phba);
6762
6763         /* At this point, all discovery is aborted */
6764         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
6765
6766         /* Unregister VPIs */
6767         vports = lpfc_create_vport_work_array(phba);
6768         if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
6769                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6770                         /* Stop FLOGI/FDISC retries */
6771                         ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
6772                         if (ndlp)
6773                                 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
6774                         lpfc_cleanup_pending_mbox(vports[i]);
6775                         if (phba->sli_rev == LPFC_SLI_REV4)
6776                                 lpfc_sli4_unreg_all_rpis(vports[i]);
6777                         lpfc_mbx_unreg_vpi(vports[i]);
6778                         shost = lpfc_shost_from_vport(vports[i]);
6779                         spin_lock_irq(shost->host_lock);
6780                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
6781                         spin_unlock_irq(shost->host_lock);
6782                         set_bit(FC_VPORT_NEEDS_INIT_VPI, &vports[i]->fc_flag);
6783                 }
6784         lpfc_destroy_vport_work_array(phba, vports);
6785         if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) {
6786                 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
6787                 if (ndlp)
6788                         lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
6789                 lpfc_cleanup_pending_mbox(phba->pport);
6790                 if (phba->sli_rev == LPFC_SLI_REV4)
6791                         lpfc_sli4_unreg_all_rpis(phba->pport);
6792                 lpfc_mbx_unreg_vpi(phba->pport);
6793                 shost = lpfc_shost_from_vport(phba->pport);
6794                 spin_lock_irq(shost->host_lock);
6795                 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED;
6796                 spin_unlock_irq(shost->host_lock);
6797                 set_bit(FC_VPORT_NEEDS_INIT_VPI, &phba->pport->fc_flag);
6798         }
6799
6800         /* Cleanup any outstanding ELS commands */
6801         lpfc_els_flush_all_cmd(phba);
6802
6803         /* Unregister the physical port VFI */
6804         rc = lpfc_issue_unreg_vfi(phba->pport);
6805         return rc;
6806 }
6807
6808 /**
6809  * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
6810  * @phba: Pointer to hba context object.
6811  *
6812  * This function issues synchronous unregister FCF mailbox command to HBA to
6813  * unregister the currently registered FCF record. The driver does not reset
6814  * the driver FCF usage state flags.
6815  *
6816  * Return 0 if successfully issued, none-zero otherwise.
6817  */
6818 int
6819 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
6820 {
6821         LPFC_MBOXQ_t *mbox;
6822         int rc;
6823
6824         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6825         if (!mbox) {
6826                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6827                                 "2551 UNREG_FCFI mbox allocation failed"
6828                                 "HBA state x%x\n", phba->pport->port_state);
6829                 return -ENOMEM;
6830         }
6831         lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
6832         mbox->vport = phba->pport;
6833         mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
6834         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
6835
6836         if (rc == MBX_NOT_FINISHED) {
6837                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6838                                 "2552 Unregister FCFI command failed rc x%x "
6839                                 "HBA state x%x\n",
6840                                 rc, phba->pport->port_state);
6841                 return -EINVAL;
6842         }
6843         return 0;
6844 }
6845
6846 /**
6847  * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
6848  * @phba: Pointer to hba context object.
6849  *
6850  * This function unregisters the currently reigstered FCF. This function
6851  * also tries to find another FCF for discovery by rescan the HBA FCF table.
6852  */
6853 void
6854 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
6855 {
6856         int rc;
6857
6858         /* Preparation for unregistering fcf */
6859         rc = lpfc_unregister_fcf_prep(phba);
6860         if (rc) {
6861                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6862                                 "2748 Failed to prepare for unregistering "
6863                                 "HBA's FCF record: rc=%d\n", rc);
6864                 return;
6865         }
6866
6867         /* Now, unregister FCF record and reset HBA FCF state */
6868         rc = lpfc_sli4_unregister_fcf(phba);
6869         if (rc)
6870                 return;
6871         /* Reset HBA FCF states after successful unregister FCF */
6872         spin_lock_irq(&phba->hbalock);
6873         phba->fcf.fcf_flag = 0;
6874         spin_unlock_irq(&phba->hbalock);
6875         phba->fcf.current_rec.flag = 0;
6876
6877         /*
6878          * If driver is not unloading, check if there is any other
6879          * FCF record that can be used for discovery.
6880          */
6881         if (test_bit(FC_UNLOADING, &phba->pport->load_flag) ||
6882             phba->link_state < LPFC_LINK_UP)
6883                 return;
6884
6885         /* This is considered as the initial FCF discovery scan */
6886         spin_lock_irq(&phba->hbalock);
6887         phba->fcf.fcf_flag |= FCF_INIT_DISC;
6888         spin_unlock_irq(&phba->hbalock);
6889
6890         /* Reset FCF roundrobin bmask for new discovery */
6891         lpfc_sli4_clear_fcf_rr_bmask(phba);
6892
6893         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
6894
6895         if (rc) {
6896                 spin_lock_irq(&phba->hbalock);
6897                 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
6898                 spin_unlock_irq(&phba->hbalock);
6899                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6900                                 "2553 lpfc_unregister_unused_fcf failed "
6901                                 "to read FCF record HBA state x%x\n",
6902                                 phba->pport->port_state);
6903         }
6904 }
6905
6906 /**
6907  * lpfc_unregister_fcf - Unregister the currently registered fcf record
6908  * @phba: Pointer to hba context object.
6909  *
6910  * This function just unregisters the currently reigstered FCF. It does not
6911  * try to find another FCF for discovery.
6912  */
6913 void
6914 lpfc_unregister_fcf(struct lpfc_hba *phba)
6915 {
6916         int rc;
6917
6918         /* Preparation for unregistering fcf */
6919         rc = lpfc_unregister_fcf_prep(phba);
6920         if (rc) {
6921                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6922                                 "2749 Failed to prepare for unregistering "
6923                                 "HBA's FCF record: rc=%d\n", rc);
6924                 return;
6925         }
6926
6927         /* Now, unregister FCF record and reset HBA FCF state */
6928         rc = lpfc_sli4_unregister_fcf(phba);
6929         if (rc)
6930                 return;
6931         /* Set proper HBA FCF states after successful unregister FCF */
6932         spin_lock_irq(&phba->hbalock);
6933         phba->fcf.fcf_flag &= ~FCF_REGISTERED;
6934         spin_unlock_irq(&phba->hbalock);
6935 }
6936
6937 /**
6938  * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
6939  * @phba: Pointer to hba context object.
6940  *
6941  * This function check if there are any connected remote port for the FCF and
6942  * if all the devices are disconnected, this function unregister FCFI.
6943  * This function also tries to use another FCF for discovery.
6944  */
6945 void
6946 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
6947 {
6948         /*
6949          * If HBA is not running in FIP mode, if HBA does not support
6950          * FCoE, if FCF discovery is ongoing, or if FCF has not been
6951          * registered, do nothing.
6952          */
6953         spin_lock_irq(&phba->hbalock);
6954         if (!test_bit(HBA_FCOE_MODE, &phba->hba_flag) ||
6955             !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
6956             !test_bit(HBA_FIP_SUPPORT, &phba->hba_flag) ||
6957             (phba->fcf.fcf_flag & FCF_DISCOVERY) ||
6958             phba->pport->port_state == LPFC_FLOGI) {
6959                 spin_unlock_irq(&phba->hbalock);
6960                 return;
6961         }
6962         spin_unlock_irq(&phba->hbalock);
6963
6964         if (lpfc_fcf_inuse(phba))
6965                 return;
6966
6967         lpfc_unregister_fcf_rescan(phba);
6968 }
6969
6970 /**
6971  * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
6972  * @phba: Pointer to hba context object.
6973  * @buff: Buffer containing the FCF connection table as in the config
6974  *         region.
6975  * This function create driver data structure for the FCF connection
6976  * record table read from config region 23.
6977  */
6978 static void
6979 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
6980         uint8_t *buff)
6981 {
6982         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
6983         struct lpfc_fcf_conn_hdr *conn_hdr;
6984         struct lpfc_fcf_conn_rec *conn_rec;
6985         uint32_t record_count;
6986         int i;
6987
6988         /* Free the current connect table */
6989         list_for_each_entry_safe(conn_entry, next_conn_entry,
6990                 &phba->fcf_conn_rec_list, list) {
6991                 list_del_init(&conn_entry->list);
6992                 kfree(conn_entry);
6993         }
6994
6995         conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
6996         record_count = conn_hdr->length * sizeof(uint32_t)/
6997                 sizeof(struct lpfc_fcf_conn_rec);
6998
6999         conn_rec = (struct lpfc_fcf_conn_rec *)
7000                 (buff + sizeof(struct lpfc_fcf_conn_hdr));
7001
7002         for (i = 0; i < record_count; i++) {
7003                 if (!(conn_rec[i].flags & FCFCNCT_VALID))
7004                         continue;
7005                 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
7006                         GFP_KERNEL);
7007                 if (!conn_entry) {
7008                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7009                                         "2566 Failed to allocate connection"
7010                                         " table entry\n");
7011                         return;
7012                 }
7013
7014                 memcpy(&conn_entry->conn_rec, &conn_rec[i],
7015                         sizeof(struct lpfc_fcf_conn_rec));
7016                 list_add_tail(&conn_entry->list,
7017                         &phba->fcf_conn_rec_list);
7018         }
7019
7020         if (!list_empty(&phba->fcf_conn_rec_list)) {
7021                 i = 0;
7022                 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list,
7023                                     list) {
7024                         conn_rec = &conn_entry->conn_rec;
7025                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7026                                         "3345 FCF connection list rec[%02d]: "
7027                                         "flags:x%04x, vtag:x%04x, "
7028                                         "fabric_name:x%02x:%02x:%02x:%02x:"
7029                                         "%02x:%02x:%02x:%02x, "
7030                                         "switch_name:x%02x:%02x:%02x:%02x:"
7031                                         "%02x:%02x:%02x:%02x\n", i++,
7032                                         conn_rec->flags, conn_rec->vlan_tag,
7033                                         conn_rec->fabric_name[0],
7034                                         conn_rec->fabric_name[1],
7035                                         conn_rec->fabric_name[2],
7036                                         conn_rec->fabric_name[3],
7037                                         conn_rec->fabric_name[4],
7038                                         conn_rec->fabric_name[5],
7039                                         conn_rec->fabric_name[6],
7040                                         conn_rec->fabric_name[7],
7041                                         conn_rec->switch_name[0],
7042                                         conn_rec->switch_name[1],
7043                                         conn_rec->switch_name[2],
7044                                         conn_rec->switch_name[3],
7045                                         conn_rec->switch_name[4],
7046                                         conn_rec->switch_name[5],
7047                                         conn_rec->switch_name[6],
7048                                         conn_rec->switch_name[7]);
7049                 }
7050         }
7051 }
7052
7053 /**
7054  * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
7055  * @phba: Pointer to hba context object.
7056  * @buff: Buffer containing the FCoE parameter data structure.
7057  *
7058  *  This function update driver data structure with config
7059  *  parameters read from config region 23.
7060  */
7061 static void
7062 lpfc_read_fcoe_param(struct lpfc_hba *phba,
7063                         uint8_t *buff)
7064 {
7065         struct lpfc_fip_param_hdr *fcoe_param_hdr;
7066         struct lpfc_fcoe_params *fcoe_param;
7067
7068         fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
7069                 buff;
7070         fcoe_param = (struct lpfc_fcoe_params *)
7071                 (buff + sizeof(struct lpfc_fip_param_hdr));
7072
7073         if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
7074                 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
7075                 return;
7076
7077         if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
7078                 phba->valid_vlan = 1;
7079                 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
7080                         0xFFF;
7081         }
7082
7083         phba->fc_map[0] = fcoe_param->fc_map[0];
7084         phba->fc_map[1] = fcoe_param->fc_map[1];
7085         phba->fc_map[2] = fcoe_param->fc_map[2];
7086         return;
7087 }
7088
7089 /**
7090  * lpfc_get_rec_conf23 - Get a record type in config region data.
7091  * @buff: Buffer containing config region 23 data.
7092  * @size: Size of the data buffer.
7093  * @rec_type: Record type to be searched.
7094  *
7095  * This function searches config region data to find the beginning
7096  * of the record specified by record_type. If record found, this
7097  * function return pointer to the record else return NULL.
7098  */
7099 static uint8_t *
7100 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
7101 {
7102         uint32_t offset = 0, rec_length;
7103
7104         if ((buff[0] == LPFC_REGION23_LAST_REC) ||
7105                 (size < sizeof(uint32_t)))
7106                 return NULL;
7107
7108         rec_length = buff[offset + 1];
7109
7110         /*
7111          * One TLV record has one word header and number of data words
7112          * specified in the rec_length field of the record header.
7113          */
7114         while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
7115                 <= size) {
7116                 if (buff[offset] == rec_type)
7117                         return &buff[offset];
7118
7119                 if (buff[offset] == LPFC_REGION23_LAST_REC)
7120                         return NULL;
7121
7122                 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
7123                 rec_length = buff[offset + 1];
7124         }
7125         return NULL;
7126 }
7127
7128 /**
7129  * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
7130  * @phba: Pointer to lpfc_hba data structure.
7131  * @buff: Buffer containing config region 23 data.
7132  * @size: Size of the data buffer.
7133  *
7134  * This function parses the FCoE config parameters in config region 23 and
7135  * populate driver data structure with the parameters.
7136  */
7137 void
7138 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
7139                 uint8_t *buff,
7140                 uint32_t size)
7141 {
7142         uint32_t offset = 0;
7143         uint8_t *rec_ptr;
7144
7145         /*
7146          * If data size is less than 2 words signature and version cannot be
7147          * verified.
7148          */
7149         if (size < 2*sizeof(uint32_t))
7150                 return;
7151
7152         /* Check the region signature first */
7153         if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
7154                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7155                         "2567 Config region 23 has bad signature\n");
7156                 return;
7157         }
7158
7159         offset += 4;
7160
7161         /* Check the data structure version */
7162         if (buff[offset] != LPFC_REGION23_VERSION) {
7163                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7164                                 "2568 Config region 23 has bad version\n");
7165                 return;
7166         }
7167         offset += 4;
7168
7169         /* Read FCoE param record */
7170         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
7171                         size - offset, FCOE_PARAM_TYPE);
7172         if (rec_ptr)
7173                 lpfc_read_fcoe_param(phba, rec_ptr);
7174
7175         /* Read FCF connection table */
7176         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
7177                 size - offset, FCOE_CONN_TBL_TYPE);
7178         if (rec_ptr)
7179                 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
7180
7181 }
7182
7183 /*
7184  * lpfc_error_lost_link - IO failure from link event or FW reset check.
7185  *
7186  * @vport: Pointer to lpfc_vport data structure.
7187  * @ulp_status: IO completion status.
7188  * @ulp_word4: Reason code for the ulp_status.
7189  *
7190  * This function evaluates the ulp_status and ulp_word4 values
7191  * for specific error values that indicate an internal link fault
7192  * or fw reset event for the completing IO.  Callers require this
7193  * common data to decide next steps on the IO.
7194  *
7195  * Return:
7196  * false - No link or reset error occurred.
7197  * true - A link or reset error occurred.
7198  */
7199 bool
7200 lpfc_error_lost_link(struct lpfc_vport *vport, u32 ulp_status, u32 ulp_word4)
7201 {
7202         /* Mask off the extra port data to get just the reason code. */
7203         u32 rsn_code = IOERR_PARAM_MASK & ulp_word4;
7204
7205         if (ulp_status == IOSTAT_LOCAL_REJECT &&
7206             (rsn_code == IOERR_SLI_ABORTED ||
7207              rsn_code == IOERR_LINK_DOWN ||
7208              rsn_code == IOERR_SLI_DOWN)) {
7209                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI | LOG_ELS,
7210                                  "0408 Report link error true: <x%x:x%x>\n",
7211                                  ulp_status, ulp_word4);
7212                 return true;
7213         }
7214
7215         return false;
7216 }