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) 2017-2023 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         rdata = rport->dd_data;
 104         if (!rdata) {
 105                 pr_err("**** %s: NULL dd_data on rport x%px SID x%x\n",
 106                        __func__, rport, rport->scsi_target_id);
 107                 return -EINVAL;
 108         }
 109
 110         ndlp = rdata->pnode;
 111         if (!rdata->pnode) {
 112                 pr_info("**** %s: NULL ndlp on rport x%px SID x%x\n",
 113                         __func__, rport, rport->scsi_target_id);
 114                 return -EINVAL;
 115         }
 116
 117         if (!ndlp->vport) {
 118                 pr_err("**** %s: Null vport on ndlp x%px, DID x%x rport x%px "
 119                        "SID x%x\n", __func__, ndlp, ndlp->nlp_DID, rport,
 120                        rport->scsi_target_id);
 121                 return -EINVAL;
 122         }
 123         return 0;
 124 }
 125
 126 void
 127 lpfc_terminate_rport_io(struct fc_rport *rport)
 128 {
 129         struct lpfc_rport_data *rdata;
 130         struct lpfc_nodelist *ndlp;
 131         struct lpfc_vport *vport;
 132
 133         if (lpfc_rport_invalid(rport))
 134                 return;
 135
 136         rdata = rport->dd_data;
 137         ndlp = rdata->pnode;
 138         vport = ndlp->vport;
 139         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 140                               "rport terminate: sid:x%x did:x%x flg:x%x",
 141                               ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 142
 143         if (ndlp->nlp_sid != NLP_NO_SID)
 144                 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 145 }
 146
 147 /*
 148  * This function will be called when dev_loss_tmo fire.
 149  */
 150 void
 151 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
 152 {
 153         struct lpfc_nodelist *ndlp;
 154         struct lpfc_vport *vport;
 155         struct lpfc_hba   *phba;
 156         struct lpfc_work_evt *evtp;
 157         unsigned long iflags;
 158
 159         ndlp = ((struct lpfc_rport_data *)rport->dd_data)->pnode;
 160         if (!ndlp)
 161                 return;
 162
 163         vport = ndlp->vport;
 164         phba  = vport->phba;
 165
 166         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 167                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
 168                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 169
 170         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 171                          "3181 dev_loss_callbk x%06x, rport x%px flg x%x "
 172                          "load_flag x%x refcnt %d state %d xpt x%x\n",
 173                          ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag,
 174                          vport->load_flag, kref_read(&ndlp->kref),
 175                          ndlp->nlp_state, ndlp->fc4_xpt_flags);
 176
 177         /* Don't schedule a worker thread event if the vport is going down.
 178          * The teardown process cleans up the node via lpfc_drop_node.
 179          */
 180         if (vport->load_flag & FC_UNLOADING) {
 181                 ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL;
 182                 ndlp->rport = NULL;
 183
 184                 ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD;
 185                 /* clear the NLP_XPT_REGD if the node is not registered
 186                  * with nvme-fc
 187                  */
 188                 if (ndlp->fc4_xpt_flags == NLP_XPT_REGD)
 189                         ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD;
 190
 191                 /* Remove the node reference from remote_port_add now.
 192                  * The driver will not call remote_port_delete.
 193                  */
 194                 lpfc_nlp_put(ndlp);
 195                 return;
 196         }
 197
 198         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 199                 return;
 200
 201         if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn))
 202                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 203                                  "6789 rport name %llx != node port name %llx",
 204                                  rport->port_name,
 205                                  wwn_to_u64(ndlp->nlp_portname.u.wwn));
 206
 207         evtp = &ndlp->dev_loss_evt;
 208
 209         if (!list_empty(&evtp->evt_listp)) {
 210                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 211                                  "6790 rport name %llx dev_loss_evt pending\n",
 212                                  rport->port_name);
 213                 return;
 214         }
 215
 216         spin_lock_irqsave(&ndlp->lock, iflags);
 217         ndlp->nlp_flag |= NLP_IN_DEV_LOSS;
 218
 219         /* If there is a PLOGI in progress, and we are in a
 220          * NLP_NPR_2B_DISC state, don't turn off the flag.
 221          */
 222         if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE)
 223                 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 224
 225         /*
 226          * The backend does not expect any more calls associated with this
 227          * rport. Remove the association between rport and ndlp.
 228          */
 229         ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD;
 230         ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL;
 231         ndlp->rport = NULL;
 232         spin_unlock_irqrestore(&ndlp->lock, iflags);
 233
 234         if (phba->worker_thread) {
 235                 /* We need to hold the node by incrementing the reference
 236                  * count until this queued work is done
 237                  */
 238                 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
 239
 240                 spin_lock_irqsave(&phba->hbalock, iflags);
 241                 if (evtp->evt_arg1) {
 242                         evtp->evt = LPFC_EVT_DEV_LOSS;
 243                         list_add_tail(&evtp->evt_listp, &phba->work_list);
 244                         lpfc_worker_wake_up(phba);
 245                 }
 246                 spin_unlock_irqrestore(&phba->hbalock, iflags);
 247         } else {
 248                 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 249                                  "3188 worker thread is stopped %s x%06x, "
 250                                  " rport x%px flg x%x load_flag x%x refcnt "
 251                                  "%d\n", __func__, ndlp->nlp_DID,
 252                                  ndlp->rport, ndlp->nlp_flag,
 253                                  vport->load_flag, kref_read(&ndlp->kref));
 254                 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) {
 255                         spin_lock_irqsave(&ndlp->lock, iflags);
 256                         /* Node is in dev loss.  No further transaction. */
 257                         ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
 258                         spin_unlock_irqrestore(&ndlp->lock, iflags);
 259                         lpfc_disc_state_machine(vport, ndlp, NULL,
 260                                                 NLP_EVT_DEVICE_RM);
 261                 }
 262
 263         }
 264
 265         return;
 266 }
 267
 268 /**
 269  * lpfc_check_inactive_vmid_one - VMID inactivity checker for a vport
 270  * @vport: Pointer to vport context object.
 271  *
 272  * This function checks for idle VMID entries related to a particular vport. If
 273  * found unused/idle, free them accordingly.
 274  **/
 275 static void lpfc_check_inactive_vmid_one(struct lpfc_vport *vport)
 276 {
 277         u16 keep;
 278         u32 difftime = 0, r, bucket;
 279         u64 *lta;
 280         int cpu;
 281         struct lpfc_vmid *vmp;
 282
 283         write_lock(&vport->vmid_lock);
 284
 285         if (!vport->cur_vmid_cnt)
 286                 goto out;
 287
 288         /* iterate through the table */
 289         hash_for_each(vport->hash_table, bucket, vmp, hnode) {
 290                 keep = 0;
 291                 if (vmp->flag & LPFC_VMID_REGISTERED) {
 292                         /* check if the particular VMID is in use */
 293                         /* for all available per cpu variable */
 294                         for_each_possible_cpu(cpu) {
 295                                 /* if last access time is less than timeout */
 296                                 lta = per_cpu_ptr(vmp->last_io_time, cpu);
 297                                 if (!lta)
 298                                         continue;
 299                                 difftime = (jiffies) - (*lta);
 300                                 if ((vport->vmid_inactivity_timeout *
 301                                      JIFFIES_PER_HR) > difftime) {
 302                                         keep = 1;
 303                                         break;
 304                                 }
 305                         }
 306
 307                         /* if none of the cpus have been used by the vm, */
 308                         /*  remove the entry if already registered */
 309                         if (!keep) {
 310                                 /* mark the entry for deregistration */
 311                                 vmp->flag = LPFC_VMID_DE_REGISTER;
 312                                 write_unlock(&vport->vmid_lock);
 313                                 if (vport->vmid_priority_tagging)
 314                                         r = lpfc_vmid_uvem(vport, vmp, false);
 315                                 else
 316                                         r = lpfc_vmid_cmd(vport,
 317                                                           SLI_CTAS_DAPP_IDENT,
 318                                                           vmp);
 319
 320                                 /* decrement number of active vms and mark */
 321                                 /* entry in slot as free */
 322                                 write_lock(&vport->vmid_lock);
 323                                 if (!r) {
 324                                         struct lpfc_vmid *ht = vmp;
 325
 326                                         vport->cur_vmid_cnt--;
 327                                         ht->flag = LPFC_VMID_SLOT_FREE;
 328                                         free_percpu(ht->last_io_time);
 329                                         ht->last_io_time = NULL;
 330                                         hash_del(&ht->hnode);
 331                                 }
 332                         }
 333                 }
 334         }
 335  out:
 336         write_unlock(&vport->vmid_lock);
 337 }
 338
 339 /**
 340  * lpfc_check_inactive_vmid - VMID inactivity checker
 341  * @phba: Pointer to hba context object.
 342  *
 343  * This function is called from the worker thread to determine if an entry in
 344  * the VMID table can be released since there was no I/O activity seen from that
 345  * particular VM for the specified time. When this happens, the entry in the
 346  * table is released and also the resources on the switch cleared.
 347  **/
 348
 349 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba)
 350 {
 351         struct lpfc_vport *vport;
 352         struct lpfc_vport **vports;
 353         int i;
 354
 355         vports = lpfc_create_vport_work_array(phba);
 356         if (!vports)
 357                 return;
 358
 359         for (i = 0; i <= phba->max_vports; i++) {
 360                 if ((!vports[i]) && (i == 0))
 361                         vport = phba->pport;
 362                 else
 363                         vport = vports[i];
 364                 if (!vport)
 365                         break;
 366
 367                 lpfc_check_inactive_vmid_one(vport);
 368         }
 369         lpfc_destroy_vport_work_array(phba, vports);
 370 }
 371
 372 /**
 373  * lpfc_check_nlp_post_devloss - Check to restore ndlp refcnt after devloss
 374  * @vport: Pointer to vport object.
 375  * @ndlp: Pointer to remote node object.
 376  *
 377  * If NLP_IN_RECOV_POST_DEV_LOSS flag was set due to outstanding recovery of
 378  * node during dev_loss_tmo processing, then this function restores the nlp_put
 379  * kref decrement from lpfc_dev_loss_tmo_handler.
 380  **/
 381 void
 382 lpfc_check_nlp_post_devloss(struct lpfc_vport *vport,
 383                             struct lpfc_nodelist *ndlp)
 384 {
 385         unsigned long iflags;
 386
 387         spin_lock_irqsave(&ndlp->lock, iflags);
 388         if (ndlp->save_flags & NLP_IN_RECOV_POST_DEV_LOSS) {
 389                 ndlp->save_flags &= ~NLP_IN_RECOV_POST_DEV_LOSS;
 390                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 391                 lpfc_nlp_get(ndlp);
 392                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY | LOG_NODE,
 393                                  "8438 Devloss timeout reversed on DID x%x "
 394                                  "refcnt %d ndlp %p flag x%x "
 395                                  "port_state = x%x\n",
 396                                  ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp,
 397                                  ndlp->nlp_flag, vport->port_state);
 398                 spin_lock_irqsave(&ndlp->lock, iflags);
 399         }
 400         spin_unlock_irqrestore(&ndlp->lock, iflags);
 401 }
 402
 403 /**
 404  * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler
 405  * @ndlp: Pointer to remote node object.
 406  *
 407  * This function is called from the worker thread when devloss timeout timer
 408  * expires. For SLI4 host, this routine shall return 1 when at lease one
 409  * remote node, including this @ndlp, is still in use of FCF; otherwise, this
 410  * routine shall return 0 when there is no remote node is still in use of FCF
 411  * when devloss timeout happened to this @ndlp.
 412  **/
 413 static int
 414 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 415 {
 416         struct lpfc_vport *vport;
 417         struct lpfc_hba   *phba;
 418         uint8_t *name;
 419         int warn_on = 0;
 420         int fcf_inuse = 0;
 421         bool recovering = false;
 422         struct fc_vport *fc_vport = NULL;
 423         unsigned long iflags;
 424
 425         vport = ndlp->vport;
 426         name = (uint8_t *)&ndlp->nlp_portname;
 427         phba = vport->phba;
 428
 429         if (phba->sli_rev == LPFC_SLI_REV4)
 430                 fcf_inuse = lpfc_fcf_inuse(phba);
 431
 432         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 433                               "rport devlosstmo:did:x%x type:x%x id:x%x",
 434                               ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_sid);
 435
 436         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 437                          "3182 %s x%06x, nflag x%x xflags x%x refcnt %d\n",
 438                          __func__, ndlp->nlp_DID, ndlp->nlp_flag,
 439                          ndlp->fc4_xpt_flags, kref_read(&ndlp->kref));
 440
 441         /* If the driver is recovering the rport, ignore devloss. */
 442         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
 443                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 444                                  "0284 Devloss timeout Ignored on "
 445                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 446                                  "NPort x%x\n",
 447                                  *name, *(name+1), *(name+2), *(name+3),
 448                                  *(name+4), *(name+5), *(name+6), *(name+7),
 449                                  ndlp->nlp_DID);
 450
 451                 spin_lock_irqsave(&ndlp->lock, iflags);
 452                 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
 453                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 454                 return fcf_inuse;
 455         }
 456
 457         /* Fabric nodes are done. */
 458         if (ndlp->nlp_type & NLP_FABRIC) {
 459                 spin_lock_irqsave(&ndlp->lock, iflags);
 460
 461                 /* In massive vport configuration settings or when the FLOGI
 462                  * completes with a sequence timeout, it's possible
 463                  * dev_loss_tmo fired during node recovery.  The driver has to
 464                  * account for this race to allow for recovery and keep
 465                  * the reference counting correct.
 466                  */
 467                 switch (ndlp->nlp_DID) {
 468                 case Fabric_DID:
 469                         fc_vport = vport->fc_vport;
 470                         if (fc_vport) {
 471                                 /* NPIV path. */
 472                                 if (fc_vport->vport_state ==
 473                                     FC_VPORT_INITIALIZING)
 474                                         recovering = true;
 475                         } else {
 476                                 /* Physical port path. */
 477                                 if (phba->hba_flag & HBA_FLOGI_OUTSTANDING)
 478                                         recovering = true;
 479                         }
 480                         break;
 481                 case Fabric_Cntl_DID:
 482                         if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
 483                                 recovering = true;
 484                         break;
 485                 case FDMI_DID:
 486                         fallthrough;
 487                 case NameServer_DID:
 488                         if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
 489                             ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE)
 490                                 recovering = true;
 491                         break;
 492                 }
 493                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 494
 495                 /* Mark an NLP_IN_RECOV_POST_DEV_LOSS flag to know if reversing
 496                  * the following lpfc_nlp_put is necessary after fabric node is
 497                  * recovered.
 498                  */
 499                 if (recovering) {
 500                         lpfc_printf_vlog(vport, KERN_INFO,
 501                                          LOG_DISCOVERY | LOG_NODE,
 502                                          "8436 Devloss timeout marked on "
 503                                          "DID x%x refcnt %d ndlp %p "
 504                                          "flag x%x port_state = x%x\n",
 505                                          ndlp->nlp_DID, kref_read(&ndlp->kref),
 506                                          ndlp, ndlp->nlp_flag,
 507                                          vport->port_state);
 508                         spin_lock_irqsave(&ndlp->lock, iflags);
 509                         ndlp->save_flags |= NLP_IN_RECOV_POST_DEV_LOSS;
 510                         spin_unlock_irqrestore(&ndlp->lock, iflags);
 511                 } else if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
 512                         /* Fabric node fully recovered before this dev_loss_tmo
 513                          * queue work is processed.  Thus, ignore the
 514                          * dev_loss_tmo event.
 515                          */
 516                         lpfc_printf_vlog(vport, KERN_INFO,
 517                                          LOG_DISCOVERY | LOG_NODE,
 518                                          "8437 Devloss timeout ignored on "
 519                                          "DID x%x refcnt %d ndlp %p "
 520                                          "flag x%x port_state = x%x\n",
 521                                          ndlp->nlp_DID, kref_read(&ndlp->kref),
 522                                          ndlp, ndlp->nlp_flag,
 523                                          vport->port_state);
 524                         return fcf_inuse;
 525                 }
 526
 527                 spin_lock_irqsave(&ndlp->lock, iflags);
 528                 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
 529                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 530                 lpfc_nlp_put(ndlp);
 531                 return fcf_inuse;
 532         }
 533
 534         if (ndlp->nlp_sid != NLP_NO_SID) {
 535                 warn_on = 1;
 536                 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 537         }
 538
 539         if (warn_on) {
 540                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 541                                  "0203 Devloss timeout on "
 542                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 543                                  "NPort x%06x Data: x%x x%x x%x refcnt %d\n",
 544                                  *name, *(name+1), *(name+2), *(name+3),
 545                                  *(name+4), *(name+5), *(name+6), *(name+7),
 546                                  ndlp->nlp_DID, ndlp->nlp_flag,
 547                                  ndlp->nlp_state, ndlp->nlp_rpi,
 548                                  kref_read(&ndlp->kref));
 549         } else {
 550                 lpfc_printf_vlog(vport, KERN_INFO, LOG_TRACE_EVENT,
 551                                  "0204 Devloss timeout on "
 552                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 553                                  "NPort x%06x Data: x%x x%x x%x\n",
 554                                  *name, *(name+1), *(name+2), *(name+3),
 555                                  *(name+4), *(name+5), *(name+6), *(name+7),
 556                                  ndlp->nlp_DID, ndlp->nlp_flag,
 557                                  ndlp->nlp_state, ndlp->nlp_rpi);
 558         }
 559
 560         /* If we are devloss, but we are in the process of rediscovering the
 561          * ndlp, don't issue a NLP_EVT_DEVICE_RM event.
 562          */
 563         if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
 564             ndlp->nlp_state <= NLP_STE_PRLI_ISSUE) {
 565                 return fcf_inuse;
 566         }
 567
 568         spin_lock_irqsave(&ndlp->lock, iflags);
 569         ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
 570         spin_unlock_irqrestore(&ndlp->lock, iflags);
 571         if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD))
 572                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 573
 574         return fcf_inuse;
 575 }
 576
 577 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba)
 578 {
 579         struct lpfc_vport *vport;
 580         struct lpfc_vport **vports;
 581         int i;
 582
 583         vports = lpfc_create_vport_work_array(phba);
 584         if (!vports)
 585                 return;
 586
 587         for (i = 0; i <= phba->max_vports; i++) {
 588                 if ((!vports[i]) && (i == 0))
 589                         vport = phba->pport;
 590                 else
 591                         vport = vports[i];
 592                 if (!vport)
 593                         break;
 594
 595                 if (vport->vmid_flag & LPFC_VMID_ISSUE_QFPA) {
 596                         if (!lpfc_issue_els_qfpa(vport))
 597                                 vport->vmid_flag &= ~LPFC_VMID_ISSUE_QFPA;
 598                 }
 599         }
 600         lpfc_destroy_vport_work_array(phba, vports);
 601 }
 602
 603 /**
 604  * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler
 605  * @phba: Pointer to hba context object.
 606  * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler.
 607  * @nlp_did: remote node identifer with devloss timeout.
 608  *
 609  * This function is called from the worker thread after invoking devloss
 610  * timeout handler and releasing the reference count for the ndlp with
 611  * which the devloss timeout was handled for SLI4 host. For the devloss
 612  * timeout of the last remote node which had been in use of FCF, when this
 613  * routine is invoked, it shall be guaranteed that none of the remote are
 614  * in-use of FCF. When devloss timeout to the last remote using the FCF,
 615  * if the FIP engine is neither in FCF table scan process nor roundrobin
 616  * failover process, the in-use FCF shall be unregistered. If the FIP
 617  * engine is in FCF discovery process, the devloss timeout state shall
 618  * be set for either the FCF table scan process or roundrobin failover
 619  * process to unregister the in-use FCF.
 620  **/
 621 static void
 622 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse,
 623                                     uint32_t nlp_did)
 624 {
 625         /* If devloss timeout happened to a remote node when FCF had no
 626          * longer been in-use, do nothing.
 627          */
 628         if (!fcf_inuse)
 629                 return;
 630
 631         if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) {
 632                 spin_lock_irq(&phba->hbalock);
 633                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
 634                         if (phba->hba_flag & HBA_DEVLOSS_TMO) {
 635                                 spin_unlock_irq(&phba->hbalock);
 636                                 return;
 637                         }
 638                         phba->hba_flag |= HBA_DEVLOSS_TMO;
 639                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 640                                         "2847 Last remote node (x%x) using "
 641                                         "FCF devloss tmo\n", nlp_did);
 642                 }
 643                 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) {
 644                         spin_unlock_irq(&phba->hbalock);
 645                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 646                                         "2868 Devloss tmo to FCF rediscovery "
 647                                         "in progress\n");
 648                         return;
 649                 }
 650                 if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) {
 651                         spin_unlock_irq(&phba->hbalock);
 652                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 653                                         "2869 Devloss tmo to idle FIP engine, "
 654                                         "unreg in-use FCF and rescan.\n");
 655                         /* Unregister in-use FCF and rescan */
 656                         lpfc_unregister_fcf_rescan(phba);
 657                         return;
 658                 }
 659                 spin_unlock_irq(&phba->hbalock);
 660                 if (phba->hba_flag & FCF_TS_INPROG)
 661                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 662                                         "2870 FCF table scan in progress\n");
 663                 if (phba->hba_flag & FCF_RR_INPROG)
 664                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 665                                         "2871 FLOGI roundrobin FCF failover "
 666                                         "in progress\n");
 667         }
 668         lpfc_unregister_unused_fcf(phba);
 669 }
 670
 671 /**
 672  * lpfc_alloc_fast_evt - Allocates data structure for posting event
 673  * @phba: Pointer to hba context object.
 674  *
 675  * This function is called from the functions which need to post
 676  * events from interrupt context. This function allocates data
 677  * structure required for posting event. It also keeps track of
 678  * number of events pending and prevent event storm when there are
 679  * too many events.
 680  **/
 681 struct lpfc_fast_path_event *
 682 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
 683         struct lpfc_fast_path_event *ret;
 684
 685         /* If there are lot of fast event do not exhaust memory due to this */
 686         if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
 687                 return NULL;
 688
 689         ret = kzalloc(sizeof(struct lpfc_fast_path_event),
 690                         GFP_ATOMIC);
 691         if (ret) {
 692                 atomic_inc(&phba->fast_event_count);
 693                 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
 694                 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
 695         }
 696         return ret;
 697 }
 698
 699 /**
 700  * lpfc_free_fast_evt - Frees event data structure
 701  * @phba: Pointer to hba context object.
 702  * @evt:  Event object which need to be freed.
 703  *
 704  * This function frees the data structure required for posting
 705  * events.
 706  **/
 707 void
 708 lpfc_free_fast_evt(struct lpfc_hba *phba,
 709                 struct lpfc_fast_path_event *evt) {
 710
 711         atomic_dec(&phba->fast_event_count);
 712         kfree(evt);
 713 }
 714
 715 /**
 716  * lpfc_send_fastpath_evt - Posts events generated from fast path
 717  * @phba: Pointer to hba context object.
 718  * @evtp: Event data structure.
 719  *
 720  * This function is called from worker thread, when the interrupt
 721  * context need to post an event. This function posts the event
 722  * to fc transport netlink interface.
 723  **/
 724 static void
 725 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
 726                 struct lpfc_work_evt *evtp)
 727 {
 728         unsigned long evt_category, evt_sub_category;
 729         struct lpfc_fast_path_event *fast_evt_data;
 730         char *evt_data;
 731         uint32_t evt_data_size;
 732         struct Scsi_Host *shost;
 733
 734         fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
 735                 work_evt);
 736
 737         evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
 738         evt_sub_category = (unsigned long) fast_evt_data->un.
 739                         fabric_evt.subcategory;
 740         shost = lpfc_shost_from_vport(fast_evt_data->vport);
 741         if (evt_category == FC_REG_FABRIC_EVENT) {
 742                 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
 743                         evt_data = (char *) &fast_evt_data->un.read_check_error;
 744                         evt_data_size = sizeof(fast_evt_data->un.
 745                                 read_check_error);
 746                 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
 747                         (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
 748                         evt_data = (char *) &fast_evt_data->un.fabric_evt;
 749                         evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
 750                 } else {
 751                         lpfc_free_fast_evt(phba, fast_evt_data);
 752                         return;
 753                 }
 754         } else if (evt_category == FC_REG_SCSI_EVENT) {
 755                 switch (evt_sub_category) {
 756                 case LPFC_EVENT_QFULL:
 757                 case LPFC_EVENT_DEVBSY:
 758                         evt_data = (char *) &fast_evt_data->un.scsi_evt;
 759                         evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
 760                         break;
 761                 case LPFC_EVENT_CHECK_COND:
 762                         evt_data = (char *) &fast_evt_data->un.check_cond_evt;
 763                         evt_data_size =  sizeof(fast_evt_data->un.
 764                                 check_cond_evt);
 765                         break;
 766                 case LPFC_EVENT_VARQUEDEPTH:
 767                         evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
 768                         evt_data_size = sizeof(fast_evt_data->un.
 769                                 queue_depth_evt);
 770                         break;
 771                 default:
 772                         lpfc_free_fast_evt(phba, fast_evt_data);
 773                         return;
 774                 }
 775         } else {
 776                 lpfc_free_fast_evt(phba, fast_evt_data);
 777                 return;
 778         }
 779
 780         if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
 781                 fc_host_post_vendor_event(shost,
 782                         fc_get_event_number(),
 783                         evt_data_size,
 784                         evt_data,
 785                         LPFC_NL_VENDOR_ID);
 786
 787         lpfc_free_fast_evt(phba, fast_evt_data);
 788         return;
 789 }
 790
 791 static void
 792 lpfc_work_list_done(struct lpfc_hba *phba)
 793 {
 794         struct lpfc_work_evt  *evtp = NULL;
 795         struct lpfc_nodelist  *ndlp;
 796         int free_evt;
 797         int fcf_inuse;
 798         uint32_t nlp_did;
 799         bool hba_pci_err;
 800
 801         spin_lock_irq(&phba->hbalock);
 802         while (!list_empty(&phba->work_list)) {
 803                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 804                                  evt_listp);
 805                 spin_unlock_irq(&phba->hbalock);
 806                 hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags);
 807                 free_evt = 1;
 808                 switch (evtp->evt) {
 809                 case LPFC_EVT_ELS_RETRY:
 810                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 811                         if (!hba_pci_err) {
 812                                 lpfc_els_retry_delay_handler(ndlp);
 813                                 free_evt = 0; /* evt is part of ndlp */
 814                         }
 815                         /* decrement the node reference count held
 816                          * for this queued work
 817                          */
 818                         lpfc_nlp_put(ndlp);
 819                         break;
 820                 case LPFC_EVT_DEV_LOSS:
 821                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 822                         fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp);
 823                         free_evt = 0;
 824                         /* decrement the node reference count held for
 825                          * this queued work
 826                          */
 827                         nlp_did = ndlp->nlp_DID;
 828                         lpfc_nlp_put(ndlp);
 829                         if (phba->sli_rev == LPFC_SLI_REV4)
 830                                 lpfc_sli4_post_dev_loss_tmo_handler(phba,
 831                                                                     fcf_inuse,
 832                                                                     nlp_did);
 833                         break;
 834                 case LPFC_EVT_RECOVER_PORT:
 835                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 836                         if (!hba_pci_err) {
 837                                 lpfc_sli_abts_recover_port(ndlp->vport, ndlp);
 838                                 free_evt = 0;
 839                         }
 840                         /* decrement the node reference count held for
 841                          * this queued work
 842                          */
 843                         lpfc_nlp_put(ndlp);
 844                         break;
 845                 case LPFC_EVT_ONLINE:
 846                         if (phba->link_state < LPFC_LINK_DOWN)
 847                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 848                         else
 849                                 *(int *) (evtp->evt_arg1) = 0;
 850                         complete((struct completion *)(evtp->evt_arg2));
 851                         break;
 852                 case LPFC_EVT_OFFLINE_PREP:
 853                         if (phba->link_state >= LPFC_LINK_DOWN)
 854                                 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
 855                         *(int *)(evtp->evt_arg1) = 0;
 856                         complete((struct completion *)(evtp->evt_arg2));
 857                         break;
 858                 case LPFC_EVT_OFFLINE:
 859                         lpfc_offline(phba);
 860                         lpfc_sli_brdrestart(phba);
 861                         *(int *)(evtp->evt_arg1) =
 862                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 863                         lpfc_unblock_mgmt_io(phba);
 864                         complete((struct completion *)(evtp->evt_arg2));
 865                         break;
 866                 case LPFC_EVT_WARM_START:
 867                         lpfc_offline(phba);
 868                         lpfc_reset_barrier(phba);
 869                         lpfc_sli_brdreset(phba);
 870                         lpfc_hba_down_post(phba);
 871                         *(int *)(evtp->evt_arg1) =
 872                                 lpfc_sli_brdready(phba, HS_MBRDY);
 873                         lpfc_unblock_mgmt_io(phba);
 874                         complete((struct completion *)(evtp->evt_arg2));
 875                         break;
 876                 case LPFC_EVT_KILL:
 877                         lpfc_offline(phba);
 878                         *(int *)(evtp->evt_arg1)
 879                                 = (phba->pport->stopped)
 880                                         ? 0 : lpfc_sli_brdkill(phba);
 881                         lpfc_unblock_mgmt_io(phba);
 882                         complete((struct completion *)(evtp->evt_arg2));
 883                         break;
 884                 case LPFC_EVT_FASTPATH_MGMT_EVT:
 885                         lpfc_send_fastpath_evt(phba, evtp);
 886                         free_evt = 0;
 887                         break;
 888                 case LPFC_EVT_RESET_HBA:
 889                         if (!(phba->pport->load_flag & FC_UNLOADING))
 890                                 lpfc_reset_hba(phba);
 891                         break;
 892                 }
 893                 if (free_evt)
 894                         kfree(evtp);
 895                 spin_lock_irq(&phba->hbalock);
 896         }
 897         spin_unlock_irq(&phba->hbalock);
 898
 899 }
 900
 901 static void
 902 lpfc_work_done(struct lpfc_hba *phba)
 903 {
 904         struct lpfc_sli_ring *pring;
 905         uint32_t ha_copy, status, control, work_port_events;
 906         struct lpfc_vport **vports;
 907         struct lpfc_vport *vport;
 908         int i;
 909         bool hba_pci_err;
 910
 911         hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags);
 912         spin_lock_irq(&phba->hbalock);
 913         ha_copy = phba->work_ha;
 914         phba->work_ha = 0;
 915         spin_unlock_irq(&phba->hbalock);
 916         if (hba_pci_err)
 917                 ha_copy = 0;
 918
 919         /* First, try to post the next mailbox command to SLI4 device */
 920         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC && !hba_pci_err)
 921                 lpfc_sli4_post_async_mbox(phba);
 922
 923         if (ha_copy & HA_ERATT) {
 924                 /* Handle the error attention event */
 925                 lpfc_handle_eratt(phba);
 926
 927                 if (phba->fw_dump_cmpl) {
 928                         complete(phba->fw_dump_cmpl);
 929                         phba->fw_dump_cmpl = NULL;
 930                 }
 931         }
 932
 933         if (ha_copy & HA_MBATT)
 934                 lpfc_sli_handle_mb_event(phba);
 935
 936         if (ha_copy & HA_LATT)
 937                 lpfc_handle_latt(phba);
 938
 939         /* Handle VMID Events */
 940         if (lpfc_is_vmid_enabled(phba) && !hba_pci_err) {
 941                 if (phba->pport->work_port_events &
 942                     WORKER_CHECK_VMID_ISSUE_QFPA) {
 943                         lpfc_check_vmid_qfpa_issue(phba);
 944                         phba->pport->work_port_events &=
 945                                 ~WORKER_CHECK_VMID_ISSUE_QFPA;
 946                 }
 947                 if (phba->pport->work_port_events &
 948                     WORKER_CHECK_INACTIVE_VMID) {
 949                         lpfc_check_inactive_vmid(phba);
 950                         phba->pport->work_port_events &=
 951                             ~WORKER_CHECK_INACTIVE_VMID;
 952                 }
 953         }
 954
 955         /* Process SLI4 events */
 956         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
 957                 if (phba->hba_flag & HBA_RRQ_ACTIVE)
 958                         lpfc_handle_rrq_active(phba);
 959                 if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
 960                         lpfc_sli4_els_xri_abort_event_proc(phba);
 961                 if (phba->hba_flag & ASYNC_EVENT)
 962                         lpfc_sli4_async_event_proc(phba);
 963                 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
 964                         spin_lock_irq(&phba->hbalock);
 965                         phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
 966                         spin_unlock_irq(&phba->hbalock);
 967                         lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
 968                 }
 969                 if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
 970                         lpfc_sli4_fcf_redisc_event_proc(phba);
 971         }
 972
 973         vports = lpfc_create_vport_work_array(phba);
 974         if (vports != NULL)
 975                 for (i = 0; i <= phba->max_vports; i++) {
 976                         /*
 977                          * We could have no vports in array if unloading, so if
 978                          * this happens then just use the pport
 979                          */
 980                         if (vports[i] == NULL && i == 0)
 981                                 vport = phba->pport;
 982                         else
 983                                 vport = vports[i];
 984                         if (vport == NULL)
 985                                 break;
 986                         spin_lock_irq(&vport->work_port_lock);
 987                         work_port_events = vport->work_port_events;
 988                         vport->work_port_events &= ~work_port_events;
 989                         spin_unlock_irq(&vport->work_port_lock);
 990                         if (hba_pci_err)
 991                                 continue;
 992                         if (work_port_events & WORKER_DISC_TMO)
 993                                 lpfc_disc_timeout_handler(vport);
 994                         if (work_port_events & WORKER_ELS_TMO)
 995                                 lpfc_els_timeout_handler(vport);
 996                         if (work_port_events & WORKER_HB_TMO)
 997                                 lpfc_hb_timeout_handler(phba);
 998                         if (work_port_events & WORKER_MBOX_TMO)
 999                                 lpfc_mbox_timeout_handler(phba);
1000                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
1001                                 lpfc_unblock_fabric_iocbs(phba);
1002                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
1003                                 lpfc_ramp_down_queue_handler(phba);
1004                         if (work_port_events & WORKER_DELAYED_DISC_TMO)
1005                                 lpfc_delayed_disc_timeout_handler(vport);
1006                 }
1007         lpfc_destroy_vport_work_array(phba, vports);
1008
1009         pring = lpfc_phba_elsring(phba);
1010         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
1011         status >>= (4*LPFC_ELS_RING);
1012         if (pring && (status & HA_RXMASK ||
1013                       pring->flag & LPFC_DEFERRED_RING_EVENT ||
1014                       phba->hba_flag & HBA_SP_QUEUE_EVT)) {
1015                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
1016                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
1017                         /* Preserve legacy behavior. */
1018                         if (!(phba->hba_flag & HBA_SP_QUEUE_EVT))
1019                                 set_bit(LPFC_DATA_READY, &phba->data_flags);
1020                 } else {
1021                         /* Driver could have abort request completed in queue
1022                          * when link goes down.  Allow for this transition.
1023                          */
1024                         if (phba->link_state >= LPFC_LINK_DOWN ||
1025                             phba->link_flag & LS_MDS_LOOPBACK) {
1026                                 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
1027                                 lpfc_sli_handle_slow_ring_event(phba, pring,
1028                                                                 (status &
1029                                                                 HA_RXMASK));
1030                         }
1031                 }
1032                 if (phba->sli_rev == LPFC_SLI_REV4)
1033                         lpfc_drain_txq(phba);
1034                 /*
1035                  * Turn on Ring interrupts
1036                  */
1037                 if (phba->sli_rev <= LPFC_SLI_REV3) {
1038                         spin_lock_irq(&phba->hbalock);
1039                         control = readl(phba->HCregaddr);
1040                         if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
1041                                 lpfc_debugfs_slow_ring_trc(phba,
1042                                         "WRK Enable ring: cntl:x%x hacopy:x%x",
1043                                         control, ha_copy, 0);
1044
1045                                 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
1046                                 writel(control, phba->HCregaddr);
1047                                 readl(phba->HCregaddr); /* flush */
1048                         } else {
1049                                 lpfc_debugfs_slow_ring_trc(phba,
1050                                         "WRK Ring ok:     cntl:x%x hacopy:x%x",
1051                                         control, ha_copy, 0);
1052                         }
1053                         spin_unlock_irq(&phba->hbalock);
1054                 }
1055         }
1056         lpfc_work_list_done(phba);
1057 }
1058
1059 int
1060 lpfc_do_work(void *p)
1061 {
1062         struct lpfc_hba *phba = p;
1063         int rc;
1064
1065         set_user_nice(current, MIN_NICE);
1066         current->flags |= PF_NOFREEZE;
1067         phba->data_flags = 0;
1068
1069         while (!kthread_should_stop()) {
1070                 /* wait and check worker queue activities */
1071                 rc = wait_event_interruptible(phba->work_waitq,
1072                                         (test_and_clear_bit(LPFC_DATA_READY,
1073                                                             &phba->data_flags)
1074                                          || kthread_should_stop()));
1075                 /* Signal wakeup shall terminate the worker thread */
1076                 if (rc) {
1077                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1078                                         "0433 Wakeup on signal: rc=x%x\n", rc);
1079                         break;
1080                 }
1081
1082                 /* Attend pending lpfc data processing */
1083                 lpfc_work_done(phba);
1084         }
1085         phba->worker_thread = NULL;
1086         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1087                         "0432 Worker thread stopped.\n");
1088         return 0;
1089 }
1090
1091 /*
1092  * This is only called to handle FC worker events. Since this a rare
1093  * occurrence, we allocate a struct lpfc_work_evt structure here instead of
1094  * embedding it in the IOCB.
1095  */
1096 int
1097 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
1098                       uint32_t evt)
1099 {
1100         struct lpfc_work_evt  *evtp;
1101         unsigned long flags;
1102
1103         /*
1104          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
1105          * be queued to worker thread for processing
1106          */
1107         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
1108         if (!evtp)
1109                 return 0;
1110
1111         evtp->evt_arg1  = arg1;
1112         evtp->evt_arg2  = arg2;
1113         evtp->evt       = evt;
1114
1115         spin_lock_irqsave(&phba->hbalock, flags);
1116         list_add_tail(&evtp->evt_listp, &phba->work_list);
1117         spin_unlock_irqrestore(&phba->hbalock, flags);
1118
1119         lpfc_worker_wake_up(phba);
1120
1121         return 1;
1122 }
1123
1124 void
1125 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
1126 {
1127         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1128         struct lpfc_hba  *phba = vport->phba;
1129         struct lpfc_nodelist *ndlp, *next_ndlp;
1130
1131         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
1132                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
1133                     ((vport->port_type == LPFC_NPIV_PORT) &&
1134                      ((ndlp->nlp_DID == NameServer_DID) ||
1135                       (ndlp->nlp_DID == FDMI_DID) ||
1136                       (ndlp->nlp_DID == Fabric_Cntl_DID))))
1137                         lpfc_unreg_rpi(vport, ndlp);
1138
1139                 /* Leave Fabric nodes alone on link down */
1140                 if ((phba->sli_rev < LPFC_SLI_REV4) &&
1141                     (!remove && ndlp->nlp_type & NLP_FABRIC))
1142                         continue;
1143
1144                 /* Notify transport of connectivity loss to trigger cleanup. */
1145                 if (phba->nvmet_support &&
1146                     ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
1147                         lpfc_nvmet_invalidate_host(phba, ndlp);
1148
1149                 lpfc_disc_state_machine(vport, ndlp, NULL,
1150                                         remove
1151                                         ? NLP_EVT_DEVICE_RM
1152                                         : NLP_EVT_DEVICE_RECOVERY);
1153         }
1154         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
1155                 if (phba->sli_rev == LPFC_SLI_REV4)
1156                         lpfc_sli4_unreg_all_rpis(vport);
1157                 lpfc_mbx_unreg_vpi(vport);
1158                 spin_lock_irq(shost->host_lock);
1159                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
1160                 spin_unlock_irq(shost->host_lock);
1161         }
1162 }
1163
1164 void
1165 lpfc_port_link_failure(struct lpfc_vport *vport)
1166 {
1167         lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
1168
1169         /* Cleanup any outstanding received buffers */
1170         lpfc_cleanup_rcv_buffers(vport);
1171
1172         /* Cleanup any outstanding RSCN activity */
1173         lpfc_els_flush_rscn(vport);
1174
1175         /* Cleanup any outstanding ELS commands */
1176         lpfc_els_flush_cmd(vport);
1177
1178         lpfc_cleanup_rpis(vport, 0);
1179
1180         /* Turn off discovery timer if its running */
1181         lpfc_can_disctmo(vport);
1182 }
1183
1184 void
1185 lpfc_linkdown_port(struct lpfc_vport *vport)
1186 {
1187         struct lpfc_hba *phba = vport->phba;
1188         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1189
1190         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1191                 fc_host_post_event(shost, fc_get_event_number(),
1192                                    FCH_EVT_LINKDOWN, 0);
1193
1194         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1195                 "Link Down:       state:x%x rtry:x%x flg:x%x",
1196                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1197
1198         lpfc_port_link_failure(vport);
1199
1200         /* Stop delayed Nport discovery */
1201         spin_lock_irq(shost->host_lock);
1202         vport->fc_flag &= ~FC_DISC_DELAYED;
1203         spin_unlock_irq(shost->host_lock);
1204         del_timer_sync(&vport->delayed_disc_tmo);
1205
1206         if (phba->sli_rev == LPFC_SLI_REV4 &&
1207             vport->port_type == LPFC_PHYSICAL_PORT &&
1208             phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_CONFIG) {
1209                 /* Assume success on link up */
1210                 phba->sli4_hba.fawwpn_flag |= LPFC_FAWWPN_FABRIC;
1211         }
1212 }
1213
1214 int
1215 lpfc_linkdown(struct lpfc_hba *phba)
1216 {
1217         struct lpfc_vport *vport = phba->pport;
1218         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1219         struct lpfc_vport **vports;
1220         LPFC_MBOXQ_t          *mb;
1221         int i;
1222         int offline;
1223
1224         if (phba->link_state == LPFC_LINK_DOWN)
1225                 return 0;
1226
1227         /* Block all SCSI stack I/Os */
1228         lpfc_scsi_dev_block(phba);
1229         offline = pci_channel_offline(phba->pcidev);
1230
1231         phba->defer_flogi_acc_flag = false;
1232
1233         /* Clear external loopback plug detected flag */
1234         phba->link_flag &= ~LS_EXTERNAL_LOOPBACK;
1235
1236         spin_lock_irq(&phba->hbalock);
1237         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
1238         spin_unlock_irq(&phba->hbalock);
1239         if (phba->link_state > LPFC_LINK_DOWN) {
1240                 phba->link_state = LPFC_LINK_DOWN;
1241                 if (phba->sli4_hba.conf_trunk) {
1242                         phba->trunk_link.link0.state = 0;
1243                         phba->trunk_link.link1.state = 0;
1244                         phba->trunk_link.link2.state = 0;
1245                         phba->trunk_link.link3.state = 0;
1246                         phba->trunk_link.phy_lnk_speed =
1247                                                 LPFC_LINK_SPEED_UNKNOWN;
1248                         phba->sli4_hba.link_state.logical_speed =
1249                                                 LPFC_LINK_SPEED_UNKNOWN;
1250                 }
1251                 spin_lock_irq(shost->host_lock);
1252                 phba->pport->fc_flag &= ~FC_LBIT;
1253                 spin_unlock_irq(shost->host_lock);
1254         }
1255         vports = lpfc_create_vport_work_array(phba);
1256         if (vports != NULL) {
1257                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
1258                         /* Issue a LINK DOWN event to all nodes */
1259                         lpfc_linkdown_port(vports[i]);
1260
1261                         vports[i]->fc_myDID = 0;
1262
1263                         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
1264                             (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1265                                 if (phba->nvmet_support)
1266                                         lpfc_nvmet_update_targetport(phba);
1267                                 else
1268                                         lpfc_nvme_update_localport(vports[i]);
1269                         }
1270                 }
1271         }
1272         lpfc_destroy_vport_work_array(phba, vports);
1273
1274         /* Clean up any SLI3 firmware default rpi's */
1275         if (phba->sli_rev > LPFC_SLI_REV3 || offline)
1276                 goto skip_unreg_did;
1277
1278         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1279         if (mb) {
1280                 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb);
1281                 mb->vport = vport;
1282                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1283                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
1284                     == MBX_NOT_FINISHED) {
1285                         mempool_free(mb, phba->mbox_mem_pool);
1286                 }
1287         }
1288
1289  skip_unreg_did:
1290         /* Setup myDID for link up if we are in pt2pt mode */
1291         if (phba->pport->fc_flag & FC_PT2PT) {
1292                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1293                 if (mb) {
1294                         lpfc_config_link(phba, mb);
1295                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1296                         mb->vport = vport;
1297                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
1298                             == MBX_NOT_FINISHED) {
1299                                 mempool_free(mb, phba->mbox_mem_pool);
1300                         }
1301                 }
1302                 spin_lock_irq(shost->host_lock);
1303                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
1304                 phba->pport->rcv_flogi_cnt = 0;
1305                 spin_unlock_irq(shost->host_lock);
1306         }
1307         return 0;
1308 }
1309
1310 static void
1311 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
1312 {
1313         struct lpfc_nodelist *ndlp;
1314
1315         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
1316                 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
1317
1318                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
1319                         continue;
1320                 if (ndlp->nlp_type & NLP_FABRIC) {
1321                         /* On Linkup its safe to clean up the ndlp
1322                          * from Fabric connections.
1323                          */
1324                         if (ndlp->nlp_DID != Fabric_DID)
1325                                 lpfc_unreg_rpi(vport, ndlp);
1326                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1327                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
1328                         /* Fail outstanding IO now since device is
1329                          * marked for PLOGI.
1330                          */
1331                         lpfc_unreg_rpi(vport, ndlp);
1332                 }
1333         }
1334 }
1335
1336 static void
1337 lpfc_linkup_port(struct lpfc_vport *vport)
1338 {
1339         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1340         struct lpfc_hba  *phba = vport->phba;
1341
1342         if ((vport->load_flag & FC_UNLOADING) != 0)
1343                 return;
1344
1345         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1346                 "Link Up:         top:x%x speed:x%x flg:x%x",
1347                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
1348
1349         /* If NPIV is not enabled, only bring the physical port up */
1350         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
1351                 (vport != phba->pport))
1352                 return;
1353
1354         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1355                 fc_host_post_event(shost, fc_get_event_number(),
1356                                    FCH_EVT_LINKUP, 0);
1357
1358         spin_lock_irq(shost->host_lock);
1359         if (phba->defer_flogi_acc_flag)
1360                 vport->fc_flag &= ~(FC_ABORT_DISCOVERY | FC_RSCN_MODE |
1361                                     FC_NLP_MORE | FC_RSCN_DISCOVERY);
1362         else
1363                 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI |
1364                                     FC_ABORT_DISCOVERY | FC_RSCN_MODE |
1365                                     FC_NLP_MORE | FC_RSCN_DISCOVERY);
1366         vport->fc_flag |= FC_NDISC_ACTIVE;
1367         vport->fc_ns_retry = 0;
1368         spin_unlock_irq(shost->host_lock);
1369         lpfc_setup_fdmi_mask(vport);
1370
1371         lpfc_linkup_cleanup_nodes(vport);
1372 }
1373
1374 static int
1375 lpfc_linkup(struct lpfc_hba *phba)
1376 {
1377         struct lpfc_vport **vports;
1378         int i;
1379         struct Scsi_Host  *shost = lpfc_shost_from_vport(phba->pport);
1380
1381         phba->link_state = LPFC_LINK_UP;
1382
1383         /* Unblock fabric iocbs if they are blocked */
1384         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
1385         del_timer_sync(&phba->fabric_block_timer);
1386
1387         vports = lpfc_create_vport_work_array(phba);
1388         if (vports != NULL)
1389                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
1390                         lpfc_linkup_port(vports[i]);
1391         lpfc_destroy_vport_work_array(phba, vports);
1392
1393         /* Clear the pport flogi counter in case the link down was
1394          * absorbed without an ACQE. No lock here - in worker thread
1395          * and discovery is synchronized.
1396          */
1397         spin_lock_irq(shost->host_lock);
1398         phba->pport->rcv_flogi_cnt = 0;
1399         spin_unlock_irq(shost->host_lock);
1400
1401         /* reinitialize initial HBA flag */
1402         phba->hba_flag &= ~(HBA_FLOGI_ISSUED | HBA_RHBA_CMPL);
1403
1404         return 0;
1405 }
1406
1407 /*
1408  * This routine handles processing a CLEAR_LA mailbox
1409  * command upon completion. It is setup in the LPFC_MBOXQ
1410  * as the completion routine when the command is
1411  * handed off to the SLI layer. SLI3 only.
1412  */
1413 static void
1414 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1415 {
1416         struct lpfc_vport *vport = pmb->vport;
1417         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1418         struct lpfc_sli   *psli = &phba->sli;
1419         MAILBOX_t *mb = &pmb->u.mb;
1420         uint32_t control;
1421
1422         /* Since we don't do discovery right now, turn these off here */
1423         psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1424         psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1425
1426         /* Check for error */
1427         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
1428                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
1429                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1430                                  "0320 CLEAR_LA mbxStatus error x%x hba "
1431                                  "state x%x\n",
1432                                  mb->mbxStatus, vport->port_state);
1433                 phba->link_state = LPFC_HBA_ERROR;
1434                 goto out;
1435         }
1436
1437         if (vport->port_type == LPFC_PHYSICAL_PORT)
1438                 phba->link_state = LPFC_HBA_READY;
1439
1440         spin_lock_irq(&phba->hbalock);
1441         psli->sli_flag |= LPFC_PROCESS_LA;
1442         control = readl(phba->HCregaddr);
1443         control |= HC_LAINT_ENA;
1444         writel(control, phba->HCregaddr);
1445         readl(phba->HCregaddr); /* flush */
1446         spin_unlock_irq(&phba->hbalock);
1447         mempool_free(pmb, phba->mbox_mem_pool);
1448         return;
1449
1450 out:
1451         /* Device Discovery completes */
1452         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1453                          "0225 Device Discovery completes\n");
1454         mempool_free(pmb, phba->mbox_mem_pool);
1455
1456         spin_lock_irq(shost->host_lock);
1457         vport->fc_flag &= ~FC_ABORT_DISCOVERY;
1458         spin_unlock_irq(shost->host_lock);
1459
1460         lpfc_can_disctmo(vport);
1461
1462         /* turn on Link Attention interrupts */
1463
1464         spin_lock_irq(&phba->hbalock);
1465         psli->sli_flag |= LPFC_PROCESS_LA;
1466         control = readl(phba->HCregaddr);
1467         control |= HC_LAINT_ENA;
1468         writel(control, phba->HCregaddr);
1469         readl(phba->HCregaddr); /* flush */
1470         spin_unlock_irq(&phba->hbalock);
1471
1472         return;
1473 }
1474
1475 void
1476 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1477 {
1478         struct lpfc_vport *vport = pmb->vport;
1479         LPFC_MBOXQ_t *sparam_mb;
1480         u16 status = pmb->u.mb.mbxStatus;
1481         int rc;
1482
1483         mempool_free(pmb, phba->mbox_mem_pool);
1484
1485         if (status)
1486                 goto out;
1487
1488         /* don't perform discovery for SLI4 loopback diagnostic test */
1489         if ((phba->sli_rev == LPFC_SLI_REV4) &&
1490             !(phba->hba_flag & HBA_FCOE_MODE) &&
1491             (phba->link_flag & LS_LOOPBACK_MODE))
1492                 return;
1493
1494         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
1495             vport->fc_flag & FC_PUBLIC_LOOP &&
1496             !(vport->fc_flag & FC_LBIT)) {
1497                         /* Need to wait for FAN - use discovery timer
1498                          * for timeout.  port_state is identically
1499                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
1500                          */
1501                         lpfc_set_disctmo(vport);
1502                         return;
1503         }
1504
1505         /* Start discovery by sending a FLOGI. port_state is identically
1506          * LPFC_FLOGI while waiting for FLOGI cmpl.
1507          */
1508         if (vport->port_state != LPFC_FLOGI) {
1509                 /* Issue MBX_READ_SPARAM to update CSPs before FLOGI if
1510                  * bb-credit recovery is in place.
1511                  */
1512                 if (phba->bbcredit_support && phba->cfg_enable_bbcr &&
1513                     !(phba->link_flag & LS_LOOPBACK_MODE)) {
1514                         sparam_mb = mempool_alloc(phba->mbox_mem_pool,
1515                                                   GFP_KERNEL);
1516                         if (!sparam_mb)
1517                                 goto sparam_out;
1518
1519                         rc = lpfc_read_sparam(phba, sparam_mb, 0);
1520                         if (rc) {
1521                                 mempool_free(sparam_mb, phba->mbox_mem_pool);
1522                                 goto sparam_out;
1523                         }
1524                         sparam_mb->vport = vport;
1525                         sparam_mb->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1526                         rc = lpfc_sli_issue_mbox(phba, sparam_mb, MBX_NOWAIT);
1527                         if (rc == MBX_NOT_FINISHED) {
1528                                 lpfc_mbox_rsrc_cleanup(phba, sparam_mb,
1529                                                        MBOX_THD_UNLOCKED);
1530                                 goto sparam_out;
1531                         }
1532
1533                         phba->hba_flag |= HBA_DEFER_FLOGI;
1534                 }  else {
1535                         lpfc_initial_flogi(vport);
1536                 }
1537         } else {
1538                 if (vport->fc_flag & FC_PT2PT)
1539                         lpfc_disc_start(vport);
1540         }
1541         return;
1542
1543 out:
1544         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1545                          "0306 CONFIG_LINK mbxStatus error x%x HBA state x%x\n",
1546                          status, vport->port_state);
1547
1548 sparam_out:
1549         lpfc_linkdown(phba);
1550
1551         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1552                          "0200 CONFIG_LINK bad hba state x%x\n",
1553                          vport->port_state);
1554
1555         lpfc_issue_clear_la(phba, vport);
1556         return;
1557 }
1558
1559 /**
1560  * lpfc_sli4_clear_fcf_rr_bmask
1561  * @phba: pointer to the struct lpfc_hba for this port.
1562  * This fucnction resets the round robin bit mask and clears the
1563  * fcf priority list. The list deletions are done while holding the
1564  * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared
1565  * from the lpfc_fcf_pri record.
1566  **/
1567 void
1568 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba)
1569 {
1570         struct lpfc_fcf_pri *fcf_pri;
1571         struct lpfc_fcf_pri *next_fcf_pri;
1572         memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask));
1573         spin_lock_irq(&phba->hbalock);
1574         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
1575                                 &phba->fcf.fcf_pri_list, list) {
1576                 list_del_init(&fcf_pri->list);
1577                 fcf_pri->fcf_rec.flag = 0;
1578         }
1579         spin_unlock_irq(&phba->hbalock);
1580 }
1581 static void
1582 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1583 {
1584         struct lpfc_vport *vport = mboxq->vport;
1585
1586         if (mboxq->u.mb.mbxStatus) {
1587                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1588                                  "2017 REG_FCFI mbxStatus error x%x "
1589                                  "HBA state x%x\n", mboxq->u.mb.mbxStatus,
1590                                  vport->port_state);
1591                 goto fail_out;
1592         }
1593
1594         /* Start FCoE discovery by sending a FLOGI. */
1595         phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1596         /* Set the FCFI registered flag */
1597         spin_lock_irq(&phba->hbalock);
1598         phba->fcf.fcf_flag |= FCF_REGISTERED;
1599         spin_unlock_irq(&phba->hbalock);
1600
1601         /* If there is a pending FCoE event, restart FCF table scan. */
1602         if ((!(phba->hba_flag & FCF_RR_INPROG)) &&
1603                 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF))
1604                 goto fail_out;
1605
1606         /* Mark successful completion of FCF table scan */
1607         spin_lock_irq(&phba->hbalock);
1608         phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1609         phba->hba_flag &= ~FCF_TS_INPROG;
1610         if (vport->port_state != LPFC_FLOGI) {
1611                 phba->hba_flag |= FCF_RR_INPROG;
1612                 spin_unlock_irq(&phba->hbalock);
1613                 lpfc_issue_init_vfi(vport);
1614                 goto out;
1615         }
1616         spin_unlock_irq(&phba->hbalock);
1617         goto out;
1618
1619 fail_out:
1620         spin_lock_irq(&phba->hbalock);
1621         phba->hba_flag &= ~FCF_RR_INPROG;
1622         spin_unlock_irq(&phba->hbalock);
1623 out:
1624         mempool_free(mboxq, phba->mbox_mem_pool);
1625 }
1626
1627 /**
1628  * lpfc_fab_name_match - Check if the fcf fabric name match.
1629  * @fab_name: pointer to fabric name.
1630  * @new_fcf_record: pointer to fcf record.
1631  *
1632  * This routine compare the fcf record's fabric name with provided
1633  * fabric name. If the fabric name are identical this function
1634  * returns 1 else return 0.
1635  **/
1636 static uint32_t
1637 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1638 {
1639         if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1640                 return 0;
1641         if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1642                 return 0;
1643         if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1644                 return 0;
1645         if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1646                 return 0;
1647         if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1648                 return 0;
1649         if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1650                 return 0;
1651         if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1652                 return 0;
1653         if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1654                 return 0;
1655         return 1;
1656 }
1657
1658 /**
1659  * lpfc_sw_name_match - Check if the fcf switch name match.
1660  * @sw_name: pointer to switch name.
1661  * @new_fcf_record: pointer to fcf record.
1662  *
1663  * This routine compare the fcf record's switch name with provided
1664  * switch name. If the switch name are identical this function
1665  * returns 1 else return 0.
1666  **/
1667 static uint32_t
1668 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1669 {
1670         if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1671                 return 0;
1672         if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1673                 return 0;
1674         if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1675                 return 0;
1676         if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1677                 return 0;
1678         if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1679                 return 0;
1680         if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1681                 return 0;
1682         if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1683                 return 0;
1684         if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1685                 return 0;
1686         return 1;
1687 }
1688
1689 /**
1690  * lpfc_mac_addr_match - Check if the fcf mac address match.
1691  * @mac_addr: pointer to mac address.
1692  * @new_fcf_record: pointer to fcf record.
1693  *
1694  * This routine compare the fcf record's mac address with HBA's
1695  * FCF mac address. If the mac addresses are identical this function
1696  * returns 1 else return 0.
1697  **/
1698 static uint32_t
1699 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1700 {
1701         if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1702                 return 0;
1703         if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1704                 return 0;
1705         if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1706                 return 0;
1707         if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1708                 return 0;
1709         if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1710                 return 0;
1711         if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1712                 return 0;
1713         return 1;
1714 }
1715
1716 static bool
1717 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1718 {
1719         return (curr_vlan_id == new_vlan_id);
1720 }
1721
1722 /**
1723  * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record.
1724  * @phba: pointer to lpfc hba data structure.
1725  * @fcf_index: Index for the lpfc_fcf_record.
1726  * @new_fcf_record: pointer to hba fcf record.
1727  *
1728  * This routine updates the driver FCF priority record from the new HBA FCF
1729  * record. The hbalock is asserted held in the code path calling this
1730  * routine.
1731  **/
1732 static void
1733 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index,
1734                                  struct fcf_record *new_fcf_record
1735                                  )
1736 {
1737         struct lpfc_fcf_pri *fcf_pri;
1738
1739         fcf_pri = &phba->fcf.fcf_pri[fcf_index];
1740         fcf_pri->fcf_rec.fcf_index = fcf_index;
1741         /* FCF record priority */
1742         fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
1743
1744 }
1745
1746 /**
1747  * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1748  * @fcf_rec: pointer to driver fcf record.
1749  * @new_fcf_record: pointer to fcf record.
1750  *
1751  * This routine copies the FCF information from the FCF
1752  * record to lpfc_hba data structure.
1753  **/
1754 static void
1755 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1756                      struct fcf_record *new_fcf_record)
1757 {
1758         /* Fabric name */
1759         fcf_rec->fabric_name[0] =
1760                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1761         fcf_rec->fabric_name[1] =
1762                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1763         fcf_rec->fabric_name[2] =
1764                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1765         fcf_rec->fabric_name[3] =
1766                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1767         fcf_rec->fabric_name[4] =
1768                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1769         fcf_rec->fabric_name[5] =
1770                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1771         fcf_rec->fabric_name[6] =
1772                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1773         fcf_rec->fabric_name[7] =
1774                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1775         /* Mac address */
1776         fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1777         fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1778         fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1779         fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1780         fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1781         fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1782         /* FCF record index */
1783         fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1784         /* FCF record priority */
1785         fcf_rec->priority = new_fcf_record->fip_priority;
1786         /* Switch name */
1787         fcf_rec->switch_name[0] =
1788                 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1789         fcf_rec->switch_name[1] =
1790                 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1791         fcf_rec->switch_name[2] =
1792                 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1793         fcf_rec->switch_name[3] =
1794                 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1795         fcf_rec->switch_name[4] =
1796                 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1797         fcf_rec->switch_name[5] =
1798                 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1799         fcf_rec->switch_name[6] =
1800                 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1801         fcf_rec->switch_name[7] =
1802                 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1803 }
1804
1805 /**
1806  * __lpfc_update_fcf_record - Update driver fcf record
1807  * @phba: pointer to lpfc hba data structure.
1808  * @fcf_rec: pointer to driver fcf record.
1809  * @new_fcf_record: pointer to hba fcf record.
1810  * @addr_mode: address mode to be set to the driver fcf record.
1811  * @vlan_id: vlan tag to be set to the driver fcf record.
1812  * @flag: flag bits to be set to the driver fcf record.
1813  *
1814  * This routine updates the driver FCF record from the new HBA FCF record
1815  * together with the address mode, vlan_id, and other informations. This
1816  * routine is called with the hbalock held.
1817  **/
1818 static void
1819 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1820                        struct fcf_record *new_fcf_record, uint32_t addr_mode,
1821                        uint16_t vlan_id, uint32_t flag)
1822 {
1823         lockdep_assert_held(&phba->hbalock);
1824
1825         /* Copy the fields from the HBA's FCF record */
1826         lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1827         /* Update other fields of driver FCF record */
1828         fcf_rec->addr_mode = addr_mode;
1829         fcf_rec->vlan_id = vlan_id;
1830         fcf_rec->flag |= (flag | RECORD_VALID);
1831         __lpfc_update_fcf_record_pri(phba,
1832                 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record),
1833                                  new_fcf_record);
1834 }
1835
1836 /**
1837  * lpfc_register_fcf - Register the FCF with hba.
1838  * @phba: pointer to lpfc hba data structure.
1839  *
1840  * This routine issues a register fcfi mailbox command to register
1841  * the fcf with HBA.
1842  **/
1843 static void
1844 lpfc_register_fcf(struct lpfc_hba *phba)
1845 {
1846         LPFC_MBOXQ_t *fcf_mbxq;
1847         int rc;
1848
1849         spin_lock_irq(&phba->hbalock);
1850         /* If the FCF is not available do nothing. */
1851         if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1852                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1853                 spin_unlock_irq(&phba->hbalock);
1854                 return;
1855         }
1856
1857         /* The FCF is already registered, start discovery */
1858         if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1859                 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1860                 phba->hba_flag &= ~FCF_TS_INPROG;
1861                 if (phba->pport->port_state != LPFC_FLOGI &&
1862                     phba->pport->fc_flag & FC_FABRIC) {
1863                         phba->hba_flag |= FCF_RR_INPROG;
1864                         spin_unlock_irq(&phba->hbalock);
1865                         lpfc_initial_flogi(phba->pport);
1866                         return;
1867                 }
1868                 spin_unlock_irq(&phba->hbalock);
1869                 return;
1870         }
1871         spin_unlock_irq(&phba->hbalock);
1872
1873         fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1874         if (!fcf_mbxq) {
1875                 spin_lock_irq(&phba->hbalock);
1876                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1877                 spin_unlock_irq(&phba->hbalock);
1878                 return;
1879         }
1880
1881         lpfc_reg_fcfi(phba, fcf_mbxq);
1882         fcf_mbxq->vport = phba->pport;
1883         fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1884         rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1885         if (rc == MBX_NOT_FINISHED) {
1886                 spin_lock_irq(&phba->hbalock);
1887                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1888                 spin_unlock_irq(&phba->hbalock);
1889                 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1890         }
1891
1892         return;
1893 }
1894
1895 /**
1896  * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1897  * @phba: pointer to lpfc hba data structure.
1898  * @new_fcf_record: pointer to fcf record.
1899  * @boot_flag: Indicates if this record used by boot bios.
1900  * @addr_mode: The address mode to be used by this FCF
1901  * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1902  *
1903  * This routine compare the fcf record with connect list obtained from the
1904  * config region to decide if this FCF can be used for SAN discovery. It returns
1905  * 1 if this record can be used for SAN discovery else return zero. If this FCF
1906  * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1907  * is used by boot bios and addr_mode will indicate the addressing mode to be
1908  * used for this FCF when the function returns.
1909  * If the FCF record need to be used with a particular vlan id, the vlan is
1910  * set in the vlan_id on return of the function. If not VLAN tagging need to
1911  * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
1912  **/
1913 static int
1914 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1915                         struct fcf_record *new_fcf_record,
1916                         uint32_t *boot_flag, uint32_t *addr_mode,
1917                         uint16_t *vlan_id)
1918 {
1919         struct lpfc_fcf_conn_entry *conn_entry;
1920         int i, j, fcf_vlan_id = 0;
1921
1922         /* Find the lowest VLAN id in the FCF record */
1923         for (i = 0; i < 512; i++) {
1924                 if (new_fcf_record->vlan_bitmap[i]) {
1925                         fcf_vlan_id = i * 8;
1926                         j = 0;
1927                         while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1928                                 j++;
1929                                 fcf_vlan_id++;
1930                         }
1931                         break;
1932                 }
1933         }
1934
1935         /* FCF not valid/available or solicitation in progress */
1936         if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1937             !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) ||
1938             bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record))
1939                 return 0;
1940
1941         if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1942                 *boot_flag = 0;
1943                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1944                                 new_fcf_record);
1945                 if (phba->valid_vlan)
1946                         *vlan_id = phba->vlan_id;
1947                 else
1948                         *vlan_id = LPFC_FCOE_NULL_VID;
1949                 return 1;
1950         }
1951
1952         /*
1953          * If there are no FCF connection table entry, driver connect to all
1954          * FCFs.
1955          */
1956         if (list_empty(&phba->fcf_conn_rec_list)) {
1957                 *boot_flag = 0;
1958                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1959                         new_fcf_record);
1960
1961                 /*
1962                  * When there are no FCF connect entries, use driver's default
1963                  * addressing mode - FPMA.
1964                  */
1965                 if (*addr_mode & LPFC_FCF_FPMA)
1966                         *addr_mode = LPFC_FCF_FPMA;
1967
1968                 /* If FCF record report a vlan id use that vlan id */
1969                 if (fcf_vlan_id)
1970                         *vlan_id = fcf_vlan_id;
1971                 else
1972                         *vlan_id = LPFC_FCOE_NULL_VID;
1973                 return 1;
1974         }
1975
1976         list_for_each_entry(conn_entry,
1977                             &phba->fcf_conn_rec_list, list) {
1978                 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1979                         continue;
1980
1981                 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1982                         !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1983                                              new_fcf_record))
1984                         continue;
1985                 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
1986                         !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
1987                                             new_fcf_record))
1988                         continue;
1989                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1990                         /*
1991                          * If the vlan bit map does not have the bit set for the
1992                          * vlan id to be used, then it is not a match.
1993                          */
1994                         if (!(new_fcf_record->vlan_bitmap
1995                                 [conn_entry->conn_rec.vlan_tag / 8] &
1996                                 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
1997                                 continue;
1998                 }
1999
2000                 /*
2001                  * If connection record does not support any addressing mode,
2002                  * skip the FCF record.
2003                  */
2004                 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
2005                         & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
2006                         continue;
2007
2008                 /*
2009                  * Check if the connection record specifies a required
2010                  * addressing mode.
2011                  */
2012                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2013                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
2014
2015                         /*
2016                          * If SPMA required but FCF not support this continue.
2017                          */
2018                         if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2019                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
2020                                         new_fcf_record) & LPFC_FCF_SPMA))
2021                                 continue;
2022
2023                         /*
2024                          * If FPMA required but FCF not support this continue.
2025                          */
2026                         if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2027                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
2028                                 new_fcf_record) & LPFC_FCF_FPMA))
2029                                 continue;
2030                 }
2031
2032                 /*
2033                  * This fcf record matches filtering criteria.
2034                  */
2035                 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
2036                         *boot_flag = 1;
2037                 else
2038                         *boot_flag = 0;
2039
2040                 /*
2041                  * If user did not specify any addressing mode, or if the
2042                  * preferred addressing mode specified by user is not supported
2043                  * by FCF, allow fabric to pick the addressing mode.
2044                  */
2045                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
2046                                 new_fcf_record);
2047                 /*
2048                  * If the user specified a required address mode, assign that
2049                  * address mode
2050                  */
2051                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2052                         (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
2053                         *addr_mode = (conn_entry->conn_rec.flags &
2054                                 FCFCNCT_AM_SPMA) ?
2055                                 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
2056                 /*
2057                  * If the user specified a preferred address mode, use the
2058                  * addr mode only if FCF support the addr_mode.
2059                  */
2060                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2061                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
2062                         (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2063                         (*addr_mode & LPFC_FCF_SPMA))
2064                                 *addr_mode = LPFC_FCF_SPMA;
2065                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2066                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
2067                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2068                         (*addr_mode & LPFC_FCF_FPMA))
2069                                 *addr_mode = LPFC_FCF_FPMA;
2070
2071                 /* If matching connect list has a vlan id, use it */
2072                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
2073                         *vlan_id = conn_entry->conn_rec.vlan_tag;
2074                 /*
2075                  * If no vlan id is specified in connect list, use the vlan id
2076                  * in the FCF record
2077                  */
2078                 else if (fcf_vlan_id)
2079                         *vlan_id = fcf_vlan_id;
2080                 else
2081                         *vlan_id = LPFC_FCOE_NULL_VID;
2082
2083                 return 1;
2084         }
2085
2086         return 0;
2087 }
2088
2089 /**
2090  * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
2091  * @phba: pointer to lpfc hba data structure.
2092  * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
2093  *
2094  * This function check if there is any fcoe event pending while driver
2095  * scan FCF entries. If there is any pending event, it will restart the
2096  * FCF saning and return 1 else return 0.
2097  */
2098 int
2099 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
2100 {
2101         /*
2102          * If the Link is up and no FCoE events while in the
2103          * FCF discovery, no need to restart FCF discovery.
2104          */
2105         if ((phba->link_state  >= LPFC_LINK_UP) &&
2106             (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
2107                 return 0;
2108
2109         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2110                         "2768 Pending link or FCF event during current "
2111                         "handling of the previous event: link_state:x%x, "
2112                         "evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
2113                         phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
2114                         phba->fcoe_eventtag);
2115
2116         spin_lock_irq(&phba->hbalock);
2117         phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
2118         spin_unlock_irq(&phba->hbalock);
2119
2120         if (phba->link_state >= LPFC_LINK_UP) {
2121                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
2122                                 "2780 Restart FCF table scan due to "
2123                                 "pending FCF event:evt_tag_at_scan:x%x, "
2124                                 "evt_tag_current:x%x\n",
2125                                 phba->fcoe_eventtag_at_fcf_scan,
2126                                 phba->fcoe_eventtag);
2127                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
2128         } else {
2129                 /*
2130                  * Do not continue FCF discovery and clear FCF_TS_INPROG
2131                  * flag
2132                  */
2133                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
2134                                 "2833 Stop FCF discovery process due to link "
2135                                 "state change (x%x)\n", phba->link_state);
2136                 spin_lock_irq(&phba->hbalock);
2137                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
2138                 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
2139                 spin_unlock_irq(&phba->hbalock);
2140         }
2141
2142         /* Unregister the currently registered FCF if required */
2143         if (unreg_fcf) {
2144                 spin_lock_irq(&phba->hbalock);
2145                 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
2146                 spin_unlock_irq(&phba->hbalock);
2147                 lpfc_sli4_unregister_fcf(phba);
2148         }
2149         return 1;
2150 }
2151
2152 /**
2153  * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
2154  * @phba: pointer to lpfc hba data structure.
2155  * @fcf_cnt: number of eligible fcf record seen so far.
2156  *
2157  * This function makes an running random selection decision on FCF record to
2158  * use through a sequence of @fcf_cnt eligible FCF records with equal
2159  * probability. To perform integer manunipulation of random numbers with
2160  * size unit32_t, a 16-bit random number returned from get_random_u16() is
2161  * taken as the random random number generated.
2162  *
2163  * Returns true when outcome is for the newly read FCF record should be
2164  * chosen; otherwise, return false when outcome is for keeping the previously
2165  * chosen FCF record.
2166  **/
2167 static bool
2168 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
2169 {
2170         uint32_t rand_num;
2171
2172         /* Get 16-bit uniform random number */
2173         rand_num = get_random_u16();
2174
2175         /* Decision with probability 1/fcf_cnt */
2176         if ((fcf_cnt * rand_num) < 0xFFFF)
2177                 return true;
2178         else
2179                 return false;
2180 }
2181
2182 /**
2183  * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
2184  * @phba: pointer to lpfc hba data structure.
2185  * @mboxq: pointer to mailbox object.
2186  * @next_fcf_index: pointer to holder of next fcf index.
2187  *
2188  * This routine parses the non-embedded fcf mailbox command by performing the
2189  * necessarily error checking, non-embedded read FCF record mailbox command
2190  * SGE parsing, and endianness swapping.
2191  *
2192  * Returns the pointer to the new FCF record in the non-embedded mailbox
2193  * command DMA memory if successfully, other NULL.
2194  */
2195 static struct fcf_record *
2196 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
2197                              uint16_t *next_fcf_index)
2198 {
2199         void *virt_addr;
2200         struct lpfc_mbx_sge sge;
2201         struct lpfc_mbx_read_fcf_tbl *read_fcf;
2202         uint32_t shdr_status, shdr_add_status, if_type;
2203         union lpfc_sli4_cfg_shdr *shdr;
2204         struct fcf_record *new_fcf_record;
2205
2206         /* Get the first SGE entry from the non-embedded DMA memory. This
2207          * routine only uses a single SGE.
2208          */
2209         lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
2210         if (unlikely(!mboxq->sge_array)) {
2211                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2212                                 "2524 Failed to get the non-embedded SGE "
2213                                 "virtual address\n");
2214                 return NULL;
2215         }
2216         virt_addr = mboxq->sge_array->addr[0];
2217
2218         shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
2219         lpfc_sli_pcimem_bcopy(shdr, shdr,
2220                               sizeof(union lpfc_sli4_cfg_shdr));
2221         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
2222         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
2223         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
2224         if (shdr_status || shdr_add_status) {
2225                 if (shdr_status == STATUS_FCF_TABLE_EMPTY ||
2226                                         if_type == LPFC_SLI_INTF_IF_TYPE_2)
2227                         lpfc_printf_log(phba, KERN_ERR,
2228                                         LOG_TRACE_EVENT,
2229                                         "2726 READ_FCF_RECORD Indicates empty "
2230                                         "FCF table.\n");
2231                 else
2232                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2233                                         "2521 READ_FCF_RECORD mailbox failed "
2234                                         "with status x%x add_status x%x, "
2235                                         "mbx\n", shdr_status, shdr_add_status);
2236                 return NULL;
2237         }
2238
2239         /* Interpreting the returned information of the FCF record */
2240         read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
2241         lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
2242                               sizeof(struct lpfc_mbx_read_fcf_tbl));
2243         *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
2244         new_fcf_record = (struct fcf_record *)(virt_addr +
2245                           sizeof(struct lpfc_mbx_read_fcf_tbl));
2246         lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
2247                                 offsetof(struct fcf_record, vlan_bitmap));
2248         new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
2249         new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
2250
2251         return new_fcf_record;
2252 }
2253
2254 /**
2255  * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
2256  * @phba: pointer to lpfc hba data structure.
2257  * @fcf_record: pointer to the fcf record.
2258  * @vlan_id: the lowest vlan identifier associated to this fcf record.
2259  * @next_fcf_index: the index to the next fcf record in hba's fcf table.
2260  *
2261  * This routine logs the detailed FCF record if the LOG_FIP loggin is
2262  * enabled.
2263  **/
2264 static void
2265 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
2266                               struct fcf_record *fcf_record,
2267                               uint16_t vlan_id,
2268                               uint16_t next_fcf_index)
2269 {
2270         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2271                         "2764 READ_FCF_RECORD:\n"
2272                         "\tFCF_Index     : x%x\n"
2273                         "\tFCF_Avail     : x%x\n"
2274                         "\tFCF_Valid     : x%x\n"
2275                         "\tFCF_SOL       : x%x\n"
2276                         "\tFIP_Priority  : x%x\n"
2277                         "\tMAC_Provider  : x%x\n"
2278                         "\tLowest VLANID : x%x\n"
2279                         "\tFCF_MAC Addr  : x%x:%x:%x:%x:%x:%x\n"
2280                         "\tFabric_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
2281                         "\tSwitch_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
2282                         "\tNext_FCF_Index: x%x\n",
2283                         bf_get(lpfc_fcf_record_fcf_index, fcf_record),
2284                         bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
2285                         bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
2286                         bf_get(lpfc_fcf_record_fcf_sol, fcf_record),
2287                         fcf_record->fip_priority,
2288                         bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
2289                         vlan_id,
2290                         bf_get(lpfc_fcf_record_mac_0, fcf_record),
2291                         bf_get(lpfc_fcf_record_mac_1, fcf_record),
2292                         bf_get(lpfc_fcf_record_mac_2, fcf_record),
2293                         bf_get(lpfc_fcf_record_mac_3, fcf_record),
2294                         bf_get(lpfc_fcf_record_mac_4, fcf_record),
2295                         bf_get(lpfc_fcf_record_mac_5, fcf_record),
2296                         bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
2297                         bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
2298                         bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
2299                         bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
2300                         bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
2301                         bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
2302                         bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
2303                         bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
2304                         bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
2305                         bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
2306                         bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
2307                         bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
2308                         bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
2309                         bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
2310                         bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
2311                         bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
2312                         next_fcf_index);
2313 }
2314
2315 /**
2316  * lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
2317  * @phba: pointer to lpfc hba data structure.
2318  * @fcf_rec: pointer to an existing FCF record.
2319  * @new_fcf_record: pointer to a new FCF record.
2320  * @new_vlan_id: vlan id from the new FCF record.
2321  *
2322  * This function performs matching test of a new FCF record against an existing
2323  * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
2324  * will not be used as part of the FCF record matching criteria.
2325  *
2326  * Returns true if all the fields matching, otherwise returns false.
2327  */
2328 static bool
2329 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
2330                            struct lpfc_fcf_rec *fcf_rec,
2331                            struct fcf_record *new_fcf_record,
2332                            uint16_t new_vlan_id)
2333 {
2334         if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
2335                 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
2336                         return false;
2337         if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
2338                 return false;
2339         if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
2340                 return false;
2341         if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
2342                 return false;
2343         if (fcf_rec->priority != new_fcf_record->fip_priority)
2344                 return false;
2345         return true;
2346 }
2347
2348 /**
2349  * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf
2350  * @vport: Pointer to vport object.
2351  * @fcf_index: index to next fcf.
2352  *
2353  * This function processing the roundrobin fcf failover to next fcf index.
2354  * When this function is invoked, there will be a current fcf registered
2355  * for flogi.
2356  * Return: 0 for continue retrying flogi on currently registered fcf;
2357  *         1 for stop flogi on currently registered fcf;
2358  */
2359 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index)
2360 {
2361         struct lpfc_hba *phba = vport->phba;
2362         int rc;
2363
2364         if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
2365                 spin_lock_irq(&phba->hbalock);
2366                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2367                         spin_unlock_irq(&phba->hbalock);
2368                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2369                                         "2872 Devloss tmo with no eligible "
2370                                         "FCF, unregister in-use FCF (x%x) "
2371                                         "and rescan FCF table\n",
2372                                         phba->fcf.current_rec.fcf_indx);
2373                         lpfc_unregister_fcf_rescan(phba);
2374                         goto stop_flogi_current_fcf;
2375                 }
2376                 /* Mark the end to FLOGI roundrobin failover */
2377                 phba->hba_flag &= ~FCF_RR_INPROG;
2378                 /* Allow action to new fcf asynchronous event */
2379                 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
2380                 spin_unlock_irq(&phba->hbalock);
2381                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2382                                 "2865 No FCF available, stop roundrobin FCF "
2383                                 "failover and change port state:x%x/x%x\n",
2384                                 phba->pport->port_state, LPFC_VPORT_UNKNOWN);
2385                 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
2386
2387                 if (!phba->fcf.fcf_redisc_attempted) {
2388                         lpfc_unregister_fcf(phba);
2389
2390                         rc = lpfc_sli4_redisc_fcf_table(phba);
2391                         if (!rc) {
2392                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2393                                                 "3195 Rediscover FCF table\n");
2394                                 phba->fcf.fcf_redisc_attempted = 1;
2395                                 lpfc_sli4_clear_fcf_rr_bmask(phba);
2396                         } else {
2397                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2398                                                 "3196 Rediscover FCF table "
2399                                                 "failed. Status:x%x\n", rc);
2400                         }
2401                 } else {
2402                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2403                                         "3197 Already rediscover FCF table "
2404                                         "attempted. No more retry\n");
2405                 }
2406                 goto stop_flogi_current_fcf;
2407         } else {
2408                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS,
2409                                 "2794 Try FLOGI roundrobin FCF failover to "
2410                                 "(x%x)\n", fcf_index);
2411                 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index);
2412                 if (rc)
2413                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
2414                                         "2761 FLOGI roundrobin FCF failover "
2415                                         "failed (rc:x%x) to read FCF (x%x)\n",
2416                                         rc, phba->fcf.current_rec.fcf_indx);
2417                 else
2418                         goto stop_flogi_current_fcf;
2419         }
2420         return 0;
2421
2422 stop_flogi_current_fcf:
2423         lpfc_can_disctmo(vport);
2424         return 1;
2425 }
2426
2427 /**
2428  * lpfc_sli4_fcf_pri_list_del
2429  * @phba: pointer to lpfc hba data structure.
2430  * @fcf_index: the index of the fcf record to delete
2431  * This routine checks the on list flag of the fcf_index to be deleted.
2432  * If it is one the list then it is removed from the list, and the flag
2433  * is cleared. This routine grab the hbalock before removing the fcf
2434  * record from the list.
2435  **/
2436 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba,
2437                         uint16_t fcf_index)
2438 {
2439         struct lpfc_fcf_pri *new_fcf_pri;
2440
2441         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2442         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2443                 "3058 deleting idx x%x pri x%x flg x%x\n",
2444                 fcf_index, new_fcf_pri->fcf_rec.priority,
2445                  new_fcf_pri->fcf_rec.flag);
2446         spin_lock_irq(&phba->hbalock);
2447         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) {
2448                 if (phba->fcf.current_rec.priority ==
2449                                 new_fcf_pri->fcf_rec.priority)
2450                         phba->fcf.eligible_fcf_cnt--;
2451                 list_del_init(&new_fcf_pri->list);
2452                 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST;
2453         }
2454         spin_unlock_irq(&phba->hbalock);
2455 }
2456
2457 /**
2458  * lpfc_sli4_set_fcf_flogi_fail
2459  * @phba: pointer to lpfc hba data structure.
2460  * @fcf_index: the index of the fcf record to update
2461  * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED
2462  * flag so the round robin selection for the particular priority level
2463  * will try a different fcf record that does not have this bit set.
2464  * If the fcf record is re-read for any reason this flag is cleared brfore
2465  * adding it to the priority list.
2466  **/
2467 void
2468 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index)
2469 {
2470         struct lpfc_fcf_pri *new_fcf_pri;
2471         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2472         spin_lock_irq(&phba->hbalock);
2473         new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED;
2474         spin_unlock_irq(&phba->hbalock);
2475 }
2476
2477 /**
2478  * lpfc_sli4_fcf_pri_list_add
2479  * @phba: pointer to lpfc hba data structure.
2480  * @fcf_index: the index of the fcf record to add
2481  * @new_fcf_record: pointer to a new FCF record.
2482  * This routine checks the priority of the fcf_index to be added.
2483  * If it is a lower priority than the current head of the fcf_pri list
2484  * then it is added to the list in the right order.
2485  * If it is the same priority as the current head of the list then it
2486  * is added to the head of the list and its bit in the rr_bmask is set.
2487  * If the fcf_index to be added is of a higher priority than the current
2488  * head of the list then the rr_bmask is cleared, its bit is set in the
2489  * rr_bmask and it is added to the head of the list.
2490  * returns:
2491  * 0=success 1=failure
2492  **/
2493 static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba,
2494         uint16_t fcf_index,
2495         struct fcf_record *new_fcf_record)
2496 {
2497         uint16_t current_fcf_pri;
2498         uint16_t last_index;
2499         struct lpfc_fcf_pri *fcf_pri;
2500         struct lpfc_fcf_pri *next_fcf_pri;
2501         struct lpfc_fcf_pri *new_fcf_pri;
2502         int ret;
2503
2504         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2505         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2506                 "3059 adding idx x%x pri x%x flg x%x\n",
2507                 fcf_index, new_fcf_record->fip_priority,
2508                  new_fcf_pri->fcf_rec.flag);
2509         spin_lock_irq(&phba->hbalock);
2510         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST)
2511                 list_del_init(&new_fcf_pri->list);
2512         new_fcf_pri->fcf_rec.fcf_index = fcf_index;
2513         new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
2514         if (list_empty(&phba->fcf.fcf_pri_list)) {
2515                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2516                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2517                                 new_fcf_pri->fcf_rec.fcf_index);
2518                 goto out;
2519         }
2520
2521         last_index = find_first_bit(phba->fcf.fcf_rr_bmask,
2522                                 LPFC_SLI4_FCF_TBL_INDX_MAX);
2523         if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
2524                 ret = 0; /* Empty rr list */
2525                 goto out;
2526         }
2527         current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority;
2528         if (new_fcf_pri->fcf_rec.priority <=  current_fcf_pri) {
2529                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2530                 if (new_fcf_pri->fcf_rec.priority <  current_fcf_pri) {
2531                         memset(phba->fcf.fcf_rr_bmask, 0,
2532                                 sizeof(*phba->fcf.fcf_rr_bmask));
2533                         /* fcfs_at_this_priority_level = 1; */
2534                         phba->fcf.eligible_fcf_cnt = 1;
2535                 } else
2536                         /* fcfs_at_this_priority_level++; */
2537                         phba->fcf.eligible_fcf_cnt++;
2538                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2539                                 new_fcf_pri->fcf_rec.fcf_index);
2540                 goto out;
2541         }
2542
2543         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
2544                                 &phba->fcf.fcf_pri_list, list) {
2545                 if (new_fcf_pri->fcf_rec.priority <=
2546                                 fcf_pri->fcf_rec.priority) {
2547                         if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list)
2548                                 list_add(&new_fcf_pri->list,
2549                                                 &phba->fcf.fcf_pri_list);
2550                         else
2551                                 list_add(&new_fcf_pri->list,
2552                                          &((struct lpfc_fcf_pri *)
2553                                         fcf_pri->list.prev)->list);
2554                         ret = 0;
2555                         goto out;
2556                 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list
2557                         || new_fcf_pri->fcf_rec.priority <
2558                                 next_fcf_pri->fcf_rec.priority) {
2559                         list_add(&new_fcf_pri->list, &fcf_pri->list);
2560                         ret = 0;
2561                         goto out;
2562                 }
2563                 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority)
2564                         continue;
2565
2566         }
2567         ret = 1;
2568 out:
2569         /* we use = instead of |= to clear the FLOGI_FAILED flag. */
2570         new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST;
2571         spin_unlock_irq(&phba->hbalock);
2572         return ret;
2573 }
2574
2575 /**
2576  * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
2577  * @phba: pointer to lpfc hba data structure.
2578  * @mboxq: pointer to mailbox object.
2579  *
2580  * This function iterates through all the fcf records available in
2581  * HBA and chooses the optimal FCF record for discovery. After finding
2582  * the FCF for discovery it registers the FCF record and kicks start
2583  * discovery.
2584  * If FCF_IN_USE flag is set in currently used FCF, the routine tries to
2585  * use an FCF record which matches fabric name and mac address of the
2586  * currently used FCF record.
2587  * If the driver supports only one FCF, it will try to use the FCF record
2588  * used by BOOT_BIOS.
2589  */
2590 void
2591 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2592 {
2593         struct fcf_record *new_fcf_record;
2594         uint32_t boot_flag, addr_mode;
2595         uint16_t fcf_index, next_fcf_index;
2596         struct lpfc_fcf_rec *fcf_rec = NULL;
2597         uint16_t vlan_id = LPFC_FCOE_NULL_VID;
2598         bool select_new_fcf;
2599         int rc;
2600
2601         /* If there is pending FCoE event restart FCF table scan */
2602         if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) {
2603                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2604                 return;
2605         }
2606
2607         /* Parse the FCF record from the non-embedded mailbox command */
2608         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2609                                                       &next_fcf_index);
2610         if (!new_fcf_record) {
2611                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2612                                 "2765 Mailbox command READ_FCF_RECORD "
2613                                 "failed to retrieve a FCF record.\n");
2614                 /* Let next new FCF event trigger fast failover */
2615                 spin_lock_irq(&phba->hbalock);
2616                 phba->hba_flag &= ~FCF_TS_INPROG;
2617                 spin_unlock_irq(&phba->hbalock);
2618                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2619                 return;
2620         }
2621
2622         /* Check the FCF record against the connection list */
2623         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2624                                       &addr_mode, &vlan_id);
2625
2626         /* Log the FCF record information if turned on */
2627         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2628                                       next_fcf_index);
2629
2630         /*
2631          * If the fcf record does not match with connect list entries
2632          * read the next entry; otherwise, this is an eligible FCF
2633          * record for roundrobin FCF failover.
2634          */
2635         if (!rc) {
2636                 lpfc_sli4_fcf_pri_list_del(phba,
2637                                         bf_get(lpfc_fcf_record_fcf_index,
2638                                                new_fcf_record));
2639                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2640                                 "2781 FCF (x%x) failed connection "
2641                                 "list check: (x%x/x%x/%x)\n",
2642                                 bf_get(lpfc_fcf_record_fcf_index,
2643                                        new_fcf_record),
2644                                 bf_get(lpfc_fcf_record_fcf_avail,
2645                                        new_fcf_record),
2646                                 bf_get(lpfc_fcf_record_fcf_valid,
2647                                        new_fcf_record),
2648                                 bf_get(lpfc_fcf_record_fcf_sol,
2649                                        new_fcf_record));
2650                 if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
2651                     lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2652                     new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
2653                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) !=
2654                             phba->fcf.current_rec.fcf_indx) {
2655                                 lpfc_printf_log(phba, KERN_ERR,
2656                                                 LOG_TRACE_EVENT,
2657                                         "2862 FCF (x%x) matches property "
2658                                         "of in-use FCF (x%x)\n",
2659                                         bf_get(lpfc_fcf_record_fcf_index,
2660                                                new_fcf_record),
2661                                         phba->fcf.current_rec.fcf_indx);
2662                                 goto read_next_fcf;
2663                         }
2664                         /*
2665                          * In case the current in-use FCF record becomes
2666                          * invalid/unavailable during FCF discovery that
2667                          * was not triggered by fast FCF failover process,
2668                          * treat it as fast FCF failover.
2669                          */
2670                         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
2671                             !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2672                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2673                                                 "2835 Invalid in-use FCF "
2674                                                 "(x%x), enter FCF failover "
2675                                                 "table scan.\n",
2676                                                 phba->fcf.current_rec.fcf_indx);
2677                                 spin_lock_irq(&phba->hbalock);
2678                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2679                                 spin_unlock_irq(&phba->hbalock);
2680                                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2681                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2682                                                 LPFC_FCOE_FCF_GET_FIRST);
2683                                 return;
2684                         }
2685                 }
2686                 goto read_next_fcf;
2687         } else {
2688                 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2689                 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index,
2690                                                         new_fcf_record);
2691                 if (rc)
2692                         goto read_next_fcf;
2693         }
2694
2695         /*
2696          * If this is not the first FCF discovery of the HBA, use last
2697          * FCF record for the discovery. The condition that a rescan
2698          * matches the in-use FCF record: fabric name, switch name, mac
2699          * address, and vlan_id.
2700          */
2701         spin_lock_irq(&phba->hbalock);
2702         if (phba->fcf.fcf_flag & FCF_IN_USE) {
2703                 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2704                         lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2705                     new_fcf_record, vlan_id)) {
2706                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) ==
2707                             phba->fcf.current_rec.fcf_indx) {
2708                                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2709                                 if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
2710                                         /* Stop FCF redisc wait timer */
2711                                         __lpfc_sli4_stop_fcf_redisc_wait_timer(
2712                                                                         phba);
2713                                 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2714                                         /* Fast failover, mark completed */
2715                                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2716                                 spin_unlock_irq(&phba->hbalock);
2717                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2718                                                 "2836 New FCF matches in-use "
2719                                                 "FCF (x%x), port_state:x%x, "
2720                                                 "fc_flag:x%x\n",
2721                                                 phba->fcf.current_rec.fcf_indx,
2722                                                 phba->pport->port_state,
2723                                                 phba->pport->fc_flag);
2724                                 goto out;
2725                         } else
2726                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2727                                         "2863 New FCF (x%x) matches "
2728                                         "property of in-use FCF (x%x)\n",
2729                                         bf_get(lpfc_fcf_record_fcf_index,
2730                                                new_fcf_record),
2731                                         phba->fcf.current_rec.fcf_indx);
2732                 }
2733                 /*
2734                  * Read next FCF record from HBA searching for the matching
2735                  * with in-use record only if not during the fast failover
2736                  * period. In case of fast failover period, it shall try to
2737                  * determine whether the FCF record just read should be the
2738                  * next candidate.
2739                  */
2740                 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2741                         spin_unlock_irq(&phba->hbalock);
2742                         goto read_next_fcf;
2743                 }
2744         }
2745         /*
2746          * Update on failover FCF record only if it's in FCF fast-failover
2747          * period; otherwise, update on current FCF record.
2748          */
2749         if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2750                 fcf_rec = &phba->fcf.failover_rec;
2751         else
2752                 fcf_rec = &phba->fcf.current_rec;
2753
2754         if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
2755                 /*
2756                  * If the driver FCF record does not have boot flag
2757                  * set and new hba fcf record has boot flag set, use
2758                  * the new hba fcf record.
2759                  */
2760                 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
2761                         /* Choose this FCF record */
2762                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2763                                         "2837 Update current FCF record "
2764                                         "(x%x) with new FCF record (x%x)\n",
2765                                         fcf_rec->fcf_indx,
2766                                         bf_get(lpfc_fcf_record_fcf_index,
2767                                         new_fcf_record));
2768                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2769                                         addr_mode, vlan_id, BOOT_ENABLE);
2770                         spin_unlock_irq(&phba->hbalock);
2771                         goto read_next_fcf;
2772                 }
2773                 /*
2774                  * If the driver FCF record has boot flag set and the
2775                  * new hba FCF record does not have boot flag, read
2776                  * the next FCF record.
2777                  */
2778                 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
2779                         spin_unlock_irq(&phba->hbalock);
2780                         goto read_next_fcf;
2781                 }
2782                 /*
2783                  * If the new hba FCF record has lower priority value
2784                  * than the driver FCF record, use the new record.
2785                  */
2786                 if (new_fcf_record->fip_priority < fcf_rec->priority) {
2787                         /* Choose the new FCF record with lower priority */
2788                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2789                                         "2838 Update current FCF record "
2790                                         "(x%x) with new FCF record (x%x)\n",
2791                                         fcf_rec->fcf_indx,
2792                                         bf_get(lpfc_fcf_record_fcf_index,
2793                                                new_fcf_record));
2794                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2795                                         addr_mode, vlan_id, 0);
2796                         /* Reset running random FCF selection count */
2797                         phba->fcf.eligible_fcf_cnt = 1;
2798                 } else if (new_fcf_record->fip_priority == fcf_rec->priority) {
2799                         /* Update running random FCF selection count */
2800                         phba->fcf.eligible_fcf_cnt++;
2801                         select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
2802                                                 phba->fcf.eligible_fcf_cnt);
2803                         if (select_new_fcf) {
2804                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2805                                         "2839 Update current FCF record "
2806                                         "(x%x) with new FCF record (x%x)\n",
2807                                         fcf_rec->fcf_indx,
2808                                         bf_get(lpfc_fcf_record_fcf_index,
2809                                                new_fcf_record));
2810                                 /* Choose the new FCF by random selection */
2811                                 __lpfc_update_fcf_record(phba, fcf_rec,
2812                                                          new_fcf_record,
2813                                                          addr_mode, vlan_id, 0);
2814                         }
2815                 }
2816                 spin_unlock_irq(&phba->hbalock);
2817                 goto read_next_fcf;
2818         }
2819         /*
2820          * This is the first suitable FCF record, choose this record for
2821          * initial best-fit FCF.
2822          */
2823         if (fcf_rec) {
2824                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2825                                 "2840 Update initial FCF candidate "
2826                                 "with FCF (x%x)\n",
2827                                 bf_get(lpfc_fcf_record_fcf_index,
2828                                        new_fcf_record));
2829                 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2830                                          addr_mode, vlan_id, (boot_flag ?
2831                                          BOOT_ENABLE : 0));
2832                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2833                 /* Setup initial running random FCF selection count */
2834                 phba->fcf.eligible_fcf_cnt = 1;
2835         }
2836         spin_unlock_irq(&phba->hbalock);
2837         goto read_next_fcf;
2838
2839 read_next_fcf:
2840         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2841         if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
2842                 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
2843                         /*
2844                          * Case of FCF fast failover scan
2845                          */
2846
2847                         /*
2848                          * It has not found any suitable FCF record, cancel
2849                          * FCF scan inprogress, and do nothing
2850                          */
2851                         if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
2852                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2853                                                "2782 No suitable FCF found: "
2854                                                "(x%x/x%x)\n",
2855                                                phba->fcoe_eventtag_at_fcf_scan,
2856                                                bf_get(lpfc_fcf_record_fcf_index,
2857                                                       new_fcf_record));
2858                                 spin_lock_irq(&phba->hbalock);
2859                                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2860                                         phba->hba_flag &= ~FCF_TS_INPROG;
2861                                         spin_unlock_irq(&phba->hbalock);
2862                                         /* Unregister in-use FCF and rescan */
2863                                         lpfc_printf_log(phba, KERN_INFO,
2864                                                         LOG_FIP,
2865                                                         "2864 On devloss tmo "
2866                                                         "unreg in-use FCF and "
2867                                                         "rescan FCF table\n");
2868                                         lpfc_unregister_fcf_rescan(phba);
2869                                         return;
2870                                 }
2871                                 /*
2872                                  * Let next new FCF event trigger fast failover
2873                                  */
2874                                 phba->hba_flag &= ~FCF_TS_INPROG;
2875                                 spin_unlock_irq(&phba->hbalock);
2876                                 return;
2877                         }
2878                         /*
2879                          * It has found a suitable FCF record that is not
2880                          * the same as in-use FCF record, unregister the
2881                          * in-use FCF record, replace the in-use FCF record
2882                          * with the new FCF record, mark FCF fast failover
2883                          * completed, and then start register the new FCF
2884                          * record.
2885                          */
2886
2887                         /* Unregister the current in-use FCF record */
2888                         lpfc_unregister_fcf(phba);
2889
2890                         /* Replace in-use record with the new record */
2891                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2892                                         "2842 Replace in-use FCF (x%x) "
2893                                         "with failover FCF (x%x)\n",
2894                                         phba->fcf.current_rec.fcf_indx,
2895                                         phba->fcf.failover_rec.fcf_indx);
2896                         memcpy(&phba->fcf.current_rec,
2897                                &phba->fcf.failover_rec,
2898                                sizeof(struct lpfc_fcf_rec));
2899                         /*
2900                          * Mark the fast FCF failover rediscovery completed
2901                          * and the start of the first round of the roundrobin
2902                          * FCF failover.
2903                          */
2904                         spin_lock_irq(&phba->hbalock);
2905                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2906                         spin_unlock_irq(&phba->hbalock);
2907                         /* Register to the new FCF record */
2908                         lpfc_register_fcf(phba);
2909                 } else {
2910                         /*
2911                          * In case of transaction period to fast FCF failover,
2912                          * do nothing when search to the end of the FCF table.
2913                          */
2914                         if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
2915                             (phba->fcf.fcf_flag & FCF_REDISC_PEND))
2916                                 return;
2917
2918                         if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2919                                 phba->fcf.fcf_flag & FCF_IN_USE) {
2920                                 /*
2921                                  * In case the current in-use FCF record no
2922                                  * longer existed during FCF discovery that
2923                                  * was not triggered by fast FCF failover
2924                                  * process, treat it as fast FCF failover.
2925                                  */
2926                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2927                                                 "2841 In-use FCF record (x%x) "
2928                                                 "not reported, entering fast "
2929                                                 "FCF failover mode scanning.\n",
2930                                                 phba->fcf.current_rec.fcf_indx);
2931                                 spin_lock_irq(&phba->hbalock);
2932                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2933                                 spin_unlock_irq(&phba->hbalock);
2934                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2935                                                 LPFC_FCOE_FCF_GET_FIRST);
2936                                 return;
2937                         }
2938                         /* Register to the new FCF record */
2939                         lpfc_register_fcf(phba);
2940                 }
2941         } else
2942                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
2943         return;
2944
2945 out:
2946         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2947         lpfc_register_fcf(phba);
2948
2949         return;
2950 }
2951
2952 /**
2953  * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler
2954  * @phba: pointer to lpfc hba data structure.
2955  * @mboxq: pointer to mailbox object.
2956  *
2957  * This is the callback function for FLOGI failure roundrobin FCF failover
2958  * read FCF record mailbox command from the eligible FCF record bmask for
2959  * performing the failover. If the FCF read back is not valid/available, it
2960  * fails through to retrying FLOGI to the currently registered FCF again.
2961  * Otherwise, if the FCF read back is valid and available, it will set the
2962  * newly read FCF record to the failover FCF record, unregister currently
2963  * registered FCF record, copy the failover FCF record to the current
2964  * FCF record, and then register the current FCF record before proceeding
2965  * to trying FLOGI on the new failover FCF.
2966  */
2967 void
2968 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2969 {
2970         struct fcf_record *new_fcf_record;
2971         uint32_t boot_flag, addr_mode;
2972         uint16_t next_fcf_index, fcf_index;
2973         uint16_t current_fcf_index;
2974         uint16_t vlan_id = LPFC_FCOE_NULL_VID;
2975         int rc;
2976
2977         /* If link state is not up, stop the roundrobin failover process */
2978         if (phba->link_state < LPFC_LINK_UP) {
2979                 spin_lock_irq(&phba->hbalock);
2980                 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
2981                 phba->hba_flag &= ~FCF_RR_INPROG;
2982                 spin_unlock_irq(&phba->hbalock);
2983                 goto out;
2984         }
2985
2986         /* Parse the FCF record from the non-embedded mailbox command */
2987         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2988                                                       &next_fcf_index);
2989         if (!new_fcf_record) {
2990                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2991                                 "2766 Mailbox command READ_FCF_RECORD "
2992                                 "failed to retrieve a FCF record. "
2993                                 "hba_flg x%x fcf_flg x%x\n", phba->hba_flag,
2994                                 phba->fcf.fcf_flag);
2995                 lpfc_unregister_fcf_rescan(phba);
2996                 goto out;
2997         }
2998
2999         /* Get the needed parameters from FCF record */
3000         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
3001                                       &addr_mode, &vlan_id);
3002
3003         /* Log the FCF record information if turned on */
3004         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
3005                                       next_fcf_index);
3006
3007         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
3008         if (!rc) {
3009                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3010                                 "2848 Remove ineligible FCF (x%x) from "
3011                                 "from roundrobin bmask\n", fcf_index);
3012                 /* Clear roundrobin bmask bit for ineligible FCF */
3013                 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index);
3014                 /* Perform next round of roundrobin FCF failover */
3015                 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
3016                 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index);
3017                 if (rc)
3018                         goto out;
3019                 goto error_out;
3020         }
3021
3022         if (fcf_index == phba->fcf.current_rec.fcf_indx) {
3023                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3024                                 "2760 Perform FLOGI roundrobin FCF failover: "
3025                                 "FCF (x%x) back to FCF (x%x)\n",
3026                                 phba->fcf.current_rec.fcf_indx, fcf_index);
3027                 /* Wait 500 ms before retrying FLOGI to current FCF */
3028                 msleep(500);
3029                 lpfc_issue_init_vfi(phba->pport);
3030                 goto out;
3031         }
3032
3033         /* Upload new FCF record to the failover FCF record */
3034         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3035                         "2834 Update current FCF (x%x) with new FCF (x%x)\n",
3036                         phba->fcf.failover_rec.fcf_indx, fcf_index);
3037         spin_lock_irq(&phba->hbalock);
3038         __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
3039                                  new_fcf_record, addr_mode, vlan_id,
3040                                  (boot_flag ? BOOT_ENABLE : 0));
3041         spin_unlock_irq(&phba->hbalock);
3042
3043         current_fcf_index = phba->fcf.current_rec.fcf_indx;
3044
3045         /* Unregister the current in-use FCF record */
3046         lpfc_unregister_fcf(phba);
3047
3048         /* Replace in-use record with the new record */
3049         memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
3050                sizeof(struct lpfc_fcf_rec));
3051
3052         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3053                         "2783 Perform FLOGI roundrobin FCF failover: FCF "
3054                         "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index);
3055
3056 error_out:
3057         lpfc_register_fcf(phba);
3058 out:
3059         lpfc_sli4_mbox_cmd_free(phba, mboxq);
3060 }
3061
3062 /**
3063  * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
3064  * @phba: pointer to lpfc hba data structure.
3065  * @mboxq: pointer to mailbox object.
3066  *
3067  * This is the callback function of read FCF record mailbox command for
3068  * updating the eligible FCF bmask for FLOGI failure roundrobin FCF
3069  * failover when a new FCF event happened. If the FCF read back is
3070  * valid/available and it passes the connection list check, it updates
3071  * the bmask for the eligible FCF record for roundrobin failover.
3072  */
3073 void
3074 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3075 {
3076         struct fcf_record *new_fcf_record;
3077         uint32_t boot_flag, addr_mode;
3078         uint16_t fcf_index, next_fcf_index;
3079         uint16_t vlan_id =  LPFC_FCOE_NULL_VID;
3080         int rc;
3081
3082         /* If link state is not up, no need to proceed */
3083         if (phba->link_state < LPFC_LINK_UP)
3084                 goto out;
3085
3086         /* If FCF discovery period is over, no need to proceed */
3087         if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
3088                 goto out;
3089
3090         /* Parse the FCF record from the non-embedded mailbox command */
3091         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
3092                                                       &next_fcf_index);
3093         if (!new_fcf_record) {
3094                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3095                                 "2767 Mailbox command READ_FCF_RECORD "
3096                                 "failed to retrieve a FCF record.\n");
3097                 goto out;
3098         }
3099
3100         /* Check the connection list for eligibility */
3101         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
3102                                       &addr_mode, &vlan_id);
3103
3104         /* Log the FCF record information if turned on */
3105         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
3106                                       next_fcf_index);
3107
3108         if (!rc)
3109                 goto out;
3110
3111         /* Update the eligible FCF record index bmask */
3112         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
3113
3114         rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record);
3115
3116 out:
3117         lpfc_sli4_mbox_cmd_free(phba, mboxq);
3118 }
3119
3120 /**
3121  * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command.
3122  * @phba: pointer to lpfc hba data structure.
3123  * @mboxq: pointer to mailbox data structure.
3124  *
3125  * This function handles completion of init vfi mailbox command.
3126  */
3127 static void
3128 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3129 {
3130         struct lpfc_vport *vport = mboxq->vport;
3131
3132         /*
3133          * VFI not supported on interface type 0, just do the flogi
3134          * Also continue if the VFI is in use - just use the same one.
3135          */
3136         if (mboxq->u.mb.mbxStatus &&
3137             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
3138                         LPFC_SLI_INTF_IF_TYPE_0) &&
3139             mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
3140                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3141                                  "2891 Init VFI mailbox failed 0x%x\n",
3142                                  mboxq->u.mb.mbxStatus);
3143                 mempool_free(mboxq, phba->mbox_mem_pool);
3144                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3145                 return;
3146         }
3147
3148         lpfc_initial_flogi(vport);
3149         mempool_free(mboxq, phba->mbox_mem_pool);
3150         return;
3151 }
3152
3153 /**
3154  * lpfc_issue_init_vfi - Issue init_vfi mailbox command.
3155  * @vport: pointer to lpfc_vport data structure.
3156  *
3157  * This function issue a init_vfi mailbox command to initialize the VFI and
3158  * VPI for the physical port.
3159  */
3160 void
3161 lpfc_issue_init_vfi(struct lpfc_vport *vport)
3162 {
3163         LPFC_MBOXQ_t *mboxq;
3164         int rc;
3165         struct lpfc_hba *phba = vport->phba;
3166
3167         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3168         if (!mboxq) {
3169                 lpfc_printf_vlog(vport, KERN_ERR,
3170                         LOG_TRACE_EVENT, "2892 Failed to allocate "
3171                         "init_vfi mailbox\n");
3172                 return;
3173         }
3174         lpfc_init_vfi(mboxq, vport);
3175         mboxq->mbox_cmpl = lpfc_init_vfi_cmpl;
3176         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
3177         if (rc == MBX_NOT_FINISHED) {
3178                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3179                                  "2893 Failed to issue init_vfi mailbox\n");
3180                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
3181         }
3182 }
3183
3184 /**
3185  * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
3186  * @phba: pointer to lpfc hba data structure.
3187  * @mboxq: pointer to mailbox data structure.
3188  *
3189  * This function handles completion of init vpi mailbox command.
3190  */
3191 void
3192 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3193 {
3194         struct lpfc_vport *vport = mboxq->vport;
3195         struct lpfc_nodelist *ndlp;
3196         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3197
3198         if (mboxq->u.mb.mbxStatus) {
3199                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3200                                  "2609 Init VPI mailbox failed 0x%x\n",
3201                                  mboxq->u.mb.mbxStatus);
3202                 mempool_free(mboxq, phba->mbox_mem_pool);
3203                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3204                 return;
3205         }
3206         spin_lock_irq(shost->host_lock);
3207         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
3208         spin_unlock_irq(shost->host_lock);
3209
3210         /* If this port is physical port or FDISC is done, do reg_vpi */
3211         if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
3212                         ndlp = lpfc_findnode_did(vport, Fabric_DID);
3213                         if (!ndlp)
3214                                 lpfc_printf_vlog(vport, KERN_ERR,
3215                                         LOG_TRACE_EVENT,
3216                                         "2731 Cannot find fabric "
3217                                         "controller node\n");
3218                         else
3219                                 lpfc_register_new_vport(phba, vport, ndlp);
3220                         mempool_free(mboxq, phba->mbox_mem_pool);
3221                         return;
3222         }
3223
3224         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
3225                 lpfc_initial_fdisc(vport);
3226         else {
3227                 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
3228                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3229                                  "2606 No NPIV Fabric support\n");
3230         }
3231         mempool_free(mboxq, phba->mbox_mem_pool);
3232         return;
3233 }
3234
3235 /**
3236  * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
3237  * @vport: pointer to lpfc_vport data structure.
3238  *
3239  * This function issue a init_vpi mailbox command to initialize
3240  * VPI for the vport.
3241  */
3242 void
3243 lpfc_issue_init_vpi(struct lpfc_vport *vport)
3244 {
3245         LPFC_MBOXQ_t *mboxq;
3246         int rc, vpi;
3247
3248         if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) {
3249                 vpi = lpfc_alloc_vpi(vport->phba);
3250                 if (!vpi) {
3251                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3252                                          "3303 Failed to obtain vport vpi\n");
3253                         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3254                         return;
3255                 }
3256                 vport->vpi = vpi;
3257         }
3258
3259         mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
3260         if (!mboxq) {
3261                 lpfc_printf_vlog(vport, KERN_ERR,
3262                         LOG_TRACE_EVENT, "2607 Failed to allocate "
3263                         "init_vpi mailbox\n");
3264                 return;
3265         }
3266         lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
3267         mboxq->vport = vport;
3268         mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
3269         rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
3270         if (rc == MBX_NOT_FINISHED) {
3271                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3272                                  "2608 Failed to issue init_vpi mailbox\n");
3273                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
3274         }
3275 }
3276
3277 /**
3278  * lpfc_start_fdiscs - send fdiscs for each vports on this port.
3279  * @phba: pointer to lpfc hba data structure.
3280  *
3281  * This function loops through the list of vports on the @phba and issues an
3282  * FDISC if possible.
3283  */
3284 void
3285 lpfc_start_fdiscs(struct lpfc_hba *phba)
3286 {
3287         struct lpfc_vport **vports;
3288         int i;
3289
3290         vports = lpfc_create_vport_work_array(phba);
3291         if (vports != NULL) {
3292                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3293                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
3294                                 continue;
3295                         /* There are no vpi for this vport */
3296                         if (vports[i]->vpi > phba->max_vpi) {
3297                                 lpfc_vport_set_state(vports[i],
3298                                                      FC_VPORT_FAILED);
3299                                 continue;
3300                         }
3301                         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3302                                 lpfc_vport_set_state(vports[i],
3303                                                      FC_VPORT_LINKDOWN);
3304                                 continue;
3305                         }
3306                         if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
3307                                 lpfc_issue_init_vpi(vports[i]);
3308                                 continue;
3309                         }
3310                         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
3311                                 lpfc_initial_fdisc(vports[i]);
3312                         else {
3313                                 lpfc_vport_set_state(vports[i],
3314                                                      FC_VPORT_NO_FABRIC_SUPP);
3315                                 lpfc_printf_vlog(vports[i], KERN_ERR,
3316                                                  LOG_TRACE_EVENT,
3317                                                  "0259 No NPIV "
3318                                                  "Fabric support\n");
3319                         }
3320                 }
3321         }
3322         lpfc_destroy_vport_work_array(phba, vports);
3323 }
3324
3325 void
3326 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3327 {
3328         struct lpfc_vport *vport = mboxq->vport;
3329         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3330
3331         /*
3332          * VFI not supported for interface type 0, so ignore any mailbox
3333          * error (except VFI in use) and continue with the discovery.
3334          */
3335         if (mboxq->u.mb.mbxStatus &&
3336             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
3337                         LPFC_SLI_INTF_IF_TYPE_0) &&
3338             mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
3339                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3340                                  "2018 REG_VFI mbxStatus error x%x "
3341                                  "HBA state x%x\n",
3342                                  mboxq->u.mb.mbxStatus, vport->port_state);
3343                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3344                         /* FLOGI failed, use loop map to make discovery list */
3345                         lpfc_disc_list_loopmap(vport);
3346                         /* Start discovery */
3347                         lpfc_disc_start(vport);
3348                         goto out_free_mem;
3349                 }
3350                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3351                 goto out_free_mem;
3352         }
3353
3354         /* If the VFI is already registered, there is nothing else to do
3355          * Unless this was a VFI update and we are in PT2PT mode, then
3356          * we should drop through to set the port state to ready.
3357          */
3358         if (vport->fc_flag & FC_VFI_REGISTERED)
3359                 if (!(phba->sli_rev == LPFC_SLI_REV4 &&
3360                       vport->fc_flag & FC_PT2PT))
3361                         goto out_free_mem;
3362
3363         /* The VPI is implicitly registered when the VFI is registered */
3364         spin_lock_irq(shost->host_lock);
3365         vport->vpi_state |= LPFC_VPI_REGISTERED;
3366         vport->fc_flag |= FC_VFI_REGISTERED;
3367         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3368         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
3369         spin_unlock_irq(shost->host_lock);
3370
3371         /* In case SLI4 FC loopback test, we are ready */
3372         if ((phba->sli_rev == LPFC_SLI_REV4) &&
3373             (phba->link_flag & LS_LOOPBACK_MODE)) {
3374                 phba->link_state = LPFC_HBA_READY;
3375                 goto out_free_mem;
3376         }
3377
3378         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3379                          "3313 cmpl reg vfi  port_state:%x fc_flag:%x myDid:%x "
3380                          "alpacnt:%d LinkState:%x topology:%x\n",
3381                          vport->port_state, vport->fc_flag, vport->fc_myDID,
3382                          vport->phba->alpa_map[0],
3383                          phba->link_state, phba->fc_topology);
3384
3385         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3386                 /*
3387                  * For private loop or for NPort pt2pt,
3388                  * just start discovery and we are done.
3389                  */
3390                 if ((vport->fc_flag & FC_PT2PT) ||
3391                     ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) &&
3392                     !(vport->fc_flag & FC_PUBLIC_LOOP))) {
3393
3394                         /* Use loop map to make discovery list */
3395                         lpfc_disc_list_loopmap(vport);
3396                         /* Start discovery */
3397                         if (vport->fc_flag & FC_PT2PT)
3398                                 vport->port_state = LPFC_VPORT_READY;
3399                         else
3400                                 lpfc_disc_start(vport);
3401                 } else {
3402                         lpfc_start_fdiscs(phba);
3403                         lpfc_do_scr_ns_plogi(phba, vport);
3404                 }
3405         }
3406
3407 out_free_mem:
3408         lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED);
3409 }
3410
3411 static void
3412 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3413 {
3414         MAILBOX_t *mb = &pmb->u.mb;
3415         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3416         struct lpfc_vport  *vport = pmb->vport;
3417         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3418         struct serv_parm *sp = &vport->fc_sparam;
3419         uint32_t ed_tov;
3420
3421         /* Check for error */
3422         if (mb->mbxStatus) {
3423                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
3424                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3425                                  "0319 READ_SPARAM mbxStatus error x%x "
3426                                  "hba state x%x>\n",
3427                                  mb->mbxStatus, vport->port_state);
3428                 lpfc_linkdown(phba);
3429                 goto out;
3430         }
3431
3432         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
3433                sizeof (struct serv_parm));
3434
3435         ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
3436         if (sp->cmn.edtovResolution)    /* E_D_TOV ticks are in nanoseconds */
3437                 ed_tov = (ed_tov + 999999) / 1000000;
3438
3439         phba->fc_edtov = ed_tov;
3440         phba->fc_ratov = (2 * ed_tov) / 1000;
3441         if (phba->fc_ratov < FF_DEF_RATOV) {
3442                 /* RA_TOV should be atleast 10sec for initial flogi */
3443                 phba->fc_ratov = FF_DEF_RATOV;
3444         }
3445
3446         lpfc_update_vport_wwn(vport);
3447         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
3448         if (vport->port_type == LPFC_PHYSICAL_PORT) {
3449                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
3450                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
3451         }
3452
3453         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
3454
3455         /* Check if sending the FLOGI is being deferred to after we get
3456          * up to date CSPs from MBX_READ_SPARAM.
3457          */
3458         if (phba->hba_flag & HBA_DEFER_FLOGI) {
3459                 lpfc_initial_flogi(vport);
3460                 phba->hba_flag &= ~HBA_DEFER_FLOGI;
3461         }
3462         return;
3463
3464 out:
3465         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
3466         lpfc_issue_clear_la(phba, vport);
3467 }
3468
3469 static void
3470 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
3471 {
3472         struct lpfc_vport *vport = phba->pport;
3473         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
3474         struct Scsi_Host *shost;
3475         int i;
3476         int rc;
3477         struct fcf_record *fcf_record;
3478         uint32_t fc_flags = 0;
3479         unsigned long iflags;
3480
3481         spin_lock_irqsave(&phba->hbalock, iflags);
3482         phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la);
3483
3484         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3485                 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) {
3486                 case LPFC_LINK_SPEED_1GHZ:
3487                 case LPFC_LINK_SPEED_2GHZ:
3488                 case LPFC_LINK_SPEED_4GHZ:
3489                 case LPFC_LINK_SPEED_8GHZ:
3490                 case LPFC_LINK_SPEED_10GHZ:
3491                 case LPFC_LINK_SPEED_16GHZ:
3492                 case LPFC_LINK_SPEED_32GHZ:
3493                 case LPFC_LINK_SPEED_64GHZ:
3494                 case LPFC_LINK_SPEED_128GHZ:
3495                 case LPFC_LINK_SPEED_256GHZ:
3496                         break;
3497                 default:
3498                         phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN;
3499                         break;
3500                 }
3501         }
3502
3503         if (phba->fc_topology &&
3504             phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) {
3505                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
3506                                 "3314 Toplogy changed was 0x%x is 0x%x\n",
3507                                 phba->fc_topology,
3508                                 bf_get(lpfc_mbx_read_top_topology, la));
3509                 phba->fc_topology_changed = 1;
3510         }
3511
3512         phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la);
3513         phba->link_flag &= ~(LS_NPIV_FAB_SUPPORTED | LS_CT_VEN_RPA);
3514
3515         shost = lpfc_shost_from_vport(vport);
3516         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3517                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
3518
3519                 /* if npiv is enabled and this adapter supports npiv log
3520                  * a message that npiv is not supported in this topology
3521                  */
3522                 if (phba->cfg_enable_npiv && phba->max_vpi)
3523                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3524                                 "1309 Link Up Event npiv not supported in loop "
3525                                 "topology\n");
3526                                 /* Get Loop Map information */
3527                 if (bf_get(lpfc_mbx_read_top_il, la))
3528                         fc_flags |= FC_LBIT;
3529
3530                 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la);
3531                 i = la->lilpBde64.tus.f.bdeSize;
3532
3533                 if (i == 0) {
3534                         phba->alpa_map[0] = 0;
3535                 } else {
3536                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
3537                                 int numalpa, j, k;
3538                                 union {
3539                                         uint8_t pamap[16];
3540                                         struct {
3541                                                 uint32_t wd1;
3542                                                 uint32_t wd2;
3543                                                 uint32_t wd3;
3544                                                 uint32_t wd4;
3545                                         } pa;
3546                                 } un;
3547                                 numalpa = phba->alpa_map[0];
3548                                 j = 0;
3549                                 while (j < numalpa) {
3550                                         memset(un.pamap, 0, 16);
3551                                         for (k = 1; j < numalpa; k++) {
3552                                                 un.pamap[k - 1] =
3553                                                         phba->alpa_map[j + 1];
3554                                                 j++;
3555                                                 if (k == 16)
3556                                                         break;
3557                                         }
3558                                         /* Link Up Event ALPA map */
3559                                         lpfc_printf_log(phba,
3560                                                         KERN_WARNING,
3561                                                         LOG_LINK_EVENT,
3562                                                         "1304 Link Up Event "
3563                                                         "ALPA map Data: x%x "
3564                                                         "x%x x%x x%x\n",
3565                                                         un.pa.wd1, un.pa.wd2,
3566                                                         un.pa.wd3, un.pa.wd4);
3567                                 }
3568                         }
3569                 }
3570         } else {
3571                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
3572                         if (phba->max_vpi && phba->cfg_enable_npiv &&
3573                            (phba->sli_rev >= LPFC_SLI_REV3))
3574                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
3575                 }
3576                 vport->fc_myDID = phba->fc_pref_DID;
3577                 fc_flags |= FC_LBIT;
3578         }
3579         spin_unlock_irqrestore(&phba->hbalock, iflags);
3580
3581         if (fc_flags) {
3582                 spin_lock_irqsave(shost->host_lock, iflags);
3583                 vport->fc_flag |= fc_flags;
3584                 spin_unlock_irqrestore(shost->host_lock, iflags);
3585         }
3586
3587         lpfc_linkup(phba);
3588         sparam_mbox = NULL;
3589
3590         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3591         if (!sparam_mbox)
3592                 goto out;
3593
3594         rc = lpfc_read_sparam(phba, sparam_mbox, 0);
3595         if (rc) {
3596                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3597                 goto out;
3598         }
3599         sparam_mbox->vport = vport;
3600         sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
3601         rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
3602         if (rc == MBX_NOT_FINISHED) {
3603                 lpfc_mbox_rsrc_cleanup(phba, sparam_mbox, MBOX_THD_UNLOCKED);
3604                 goto out;
3605         }
3606
3607         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3608                 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3609                 if (!cfglink_mbox)
3610                         goto out;
3611                 vport->port_state = LPFC_LOCAL_CFG_LINK;
3612                 lpfc_config_link(phba, cfglink_mbox);
3613                 cfglink_mbox->vport = vport;
3614                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
3615                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
3616                 if (rc == MBX_NOT_FINISHED) {
3617                         mempool_free(cfglink_mbox, phba->mbox_mem_pool);
3618                         goto out;
3619                 }
3620         } else {
3621                 vport->port_state = LPFC_VPORT_UNKNOWN;
3622                 /*
3623                  * Add the driver's default FCF record at FCF index 0 now. This
3624                  * is phase 1 implementation that support FCF index 0 and driver
3625                  * defaults.
3626                  */
3627                 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
3628                         fcf_record = kzalloc(sizeof(struct fcf_record),
3629                                         GFP_KERNEL);
3630                         if (unlikely(!fcf_record)) {
3631                                 lpfc_printf_log(phba, KERN_ERR,
3632                                         LOG_TRACE_EVENT,
3633                                         "2554 Could not allocate memory for "
3634                                         "fcf record\n");
3635                                 rc = -ENODEV;
3636                                 goto out;
3637                         }
3638
3639                         lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
3640                                                 LPFC_FCOE_FCF_DEF_INDEX);
3641                         rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
3642                         if (unlikely(rc)) {
3643                                 lpfc_printf_log(phba, KERN_ERR,
3644                                         LOG_TRACE_EVENT,
3645                                         "2013 Could not manually add FCF "
3646                                         "record 0, status %d\n", rc);
3647                                 rc = -ENODEV;
3648                                 kfree(fcf_record);
3649                                 goto out;
3650                         }
3651                         kfree(fcf_record);
3652                 }
3653                 /*
3654                  * The driver is expected to do FIP/FCF. Call the port
3655                  * and get the FCF Table.
3656                  */
3657                 spin_lock_irqsave(&phba->hbalock, iflags);
3658                 if (phba->hba_flag & FCF_TS_INPROG) {
3659                         spin_unlock_irqrestore(&phba->hbalock, iflags);
3660                         return;
3661                 }
3662                 /* This is the initial FCF discovery scan */
3663                 phba->fcf.fcf_flag |= FCF_INIT_DISC;
3664                 spin_unlock_irqrestore(&phba->hbalock, iflags);
3665                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3666                                 "2778 Start FCF table scan at linkup\n");
3667                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
3668                                                      LPFC_FCOE_FCF_GET_FIRST);
3669                 if (rc) {
3670                         spin_lock_irqsave(&phba->hbalock, iflags);
3671                         phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
3672                         spin_unlock_irqrestore(&phba->hbalock, iflags);
3673                         goto out;
3674                 }
3675                 /* Reset FCF roundrobin bmask for new discovery */
3676                 lpfc_sli4_clear_fcf_rr_bmask(phba);
3677         }
3678
3679         /* Prepare for LINK up registrations */
3680         memset(phba->os_host_name, 0, sizeof(phba->os_host_name));
3681         scnprintf(phba->os_host_name, sizeof(phba->os_host_name), "%s",
3682                   init_utsname()->nodename);
3683         return;
3684 out:
3685         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3686         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3687                          "0263 Discovery Mailbox error: state: 0x%x : x%px x%px\n",
3688                          vport->port_state, sparam_mbox, cfglink_mbox);
3689         lpfc_issue_clear_la(phba, vport);
3690         return;
3691 }
3692
3693 static void
3694 lpfc_enable_la(struct lpfc_hba *phba)
3695 {
3696         uint32_t control;
3697         struct lpfc_sli *psli = &phba->sli;
3698         spin_lock_irq(&phba->hbalock);
3699         psli->sli_flag |= LPFC_PROCESS_LA;
3700         if (phba->sli_rev <= LPFC_SLI_REV3) {
3701                 control = readl(phba->HCregaddr);
3702                 control |= HC_LAINT_ENA;
3703                 writel(control, phba->HCregaddr);
3704                 readl(phba->HCregaddr); /* flush */
3705         }
3706         spin_unlock_irq(&phba->hbalock);
3707 }
3708
3709 static void
3710 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
3711 {
3712         lpfc_linkdown(phba);
3713         lpfc_enable_la(phba);
3714         lpfc_unregister_unused_fcf(phba);
3715         /* turn on Link Attention interrupts - no CLEAR_LA needed */
3716 }
3717
3718
3719 /*
3720  * This routine handles processing a READ_TOPOLOGY mailbox
3721  * command upon completion. It is setup in the LPFC_MBOXQ
3722  * as the completion routine when the command is
3723  * handed off to the SLI layer. SLI4 only.
3724  */
3725 void
3726 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3727 {
3728         struct lpfc_vport *vport = pmb->vport;
3729         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3730         struct lpfc_mbx_read_top *la;
3731         struct lpfc_sli_ring *pring;
3732         MAILBOX_t *mb = &pmb->u.mb;
3733         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
3734         uint8_t attn_type;
3735         unsigned long iflags;
3736
3737         /* Unblock ELS traffic */
3738         pring = lpfc_phba_elsring(phba);
3739         if (pring)
3740                 pring->flag &= ~LPFC_STOP_IOCB_EVENT;
3741
3742         /* Check for error */
3743         if (mb->mbxStatus) {
3744                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3745                                 "1307 READ_LA mbox error x%x state x%x\n",
3746                                 mb->mbxStatus, vport->port_state);
3747                 lpfc_mbx_issue_link_down(phba);
3748                 phba->link_state = LPFC_HBA_ERROR;
3749                 goto lpfc_mbx_cmpl_read_topology_free_mbuf;
3750         }
3751
3752         la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
3753         attn_type = bf_get(lpfc_mbx_read_top_att_type, la);
3754
3755         memcpy(&phba->alpa_map[0], mp->virt, 128);
3756
3757         spin_lock_irqsave(shost->host_lock, iflags);
3758         if (bf_get(lpfc_mbx_read_top_pb, la))
3759                 vport->fc_flag |= FC_BYPASSED_MODE;
3760         else
3761                 vport->fc_flag &= ~FC_BYPASSED_MODE;
3762         spin_unlock_irqrestore(shost->host_lock, iflags);
3763
3764         if (phba->fc_eventTag <= la->eventTag) {
3765                 phba->fc_stat.LinkMultiEvent++;
3766                 if (attn_type == LPFC_ATT_LINK_UP)
3767                         if (phba->fc_eventTag != 0)
3768                                 lpfc_linkdown(phba);
3769         }
3770
3771         phba->fc_eventTag = la->eventTag;
3772         phba->link_events++;
3773         if (attn_type == LPFC_ATT_LINK_UP) {
3774                 phba->fc_stat.LinkUp++;
3775                 if (phba->link_flag & LS_LOOPBACK_MODE) {
3776                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3777                                         "1306 Link Up Event in loop back mode "
3778                                         "x%x received Data: x%x x%x x%x x%x\n",
3779                                         la->eventTag, phba->fc_eventTag,
3780                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3781                                                la),
3782                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3783                                         phba->alpa_map[0]);
3784                 } else {
3785                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3786                                         "1303 Link Up Event x%x received "
3787                                         "Data: x%x x%x x%x x%x x%x\n",
3788                                         la->eventTag, phba->fc_eventTag,
3789                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3790                                                la),
3791                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3792                                         phba->alpa_map[0],
3793                                         bf_get(lpfc_mbx_read_top_fa, la));
3794                 }
3795                 lpfc_mbx_process_link_up(phba, la);
3796
3797                 if (phba->cmf_active_mode != LPFC_CFG_OFF)
3798                         lpfc_cmf_signal_init(phba);
3799
3800                 if (phba->lmt & LMT_64Gb)
3801                         lpfc_read_lds_params(phba);
3802
3803         } else if (attn_type == LPFC_ATT_LINK_DOWN ||
3804                    attn_type == LPFC_ATT_UNEXP_WWPN) {
3805                 phba->fc_stat.LinkDown++;
3806                 if (phba->link_flag & LS_LOOPBACK_MODE)
3807                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3808                                 "1308 Link Down Event in loop back mode "
3809                                 "x%x received "
3810                                 "Data: x%x x%x x%x\n",
3811                                 la->eventTag, phba->fc_eventTag,
3812                                 phba->pport->port_state, vport->fc_flag);
3813                 else if (attn_type == LPFC_ATT_UNEXP_WWPN)
3814                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3815                                 "1313 Link Down Unexpected FA WWPN Event x%x "
3816                                 "received Data: x%x x%x x%x x%x\n",
3817                                 la->eventTag, phba->fc_eventTag,
3818                                 phba->pport->port_state, vport->fc_flag,
3819                                 bf_get(lpfc_mbx_read_top_fa, la));
3820                 else
3821                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3822                                 "1305 Link Down Event x%x received "
3823                                 "Data: x%x x%x x%x x%x\n",
3824                                 la->eventTag, phba->fc_eventTag,
3825                                 phba->pport->port_state, vport->fc_flag,
3826                                 bf_get(lpfc_mbx_read_top_fa, la));
3827                 lpfc_mbx_issue_link_down(phba);
3828         }
3829
3830         if ((phba->sli_rev < LPFC_SLI_REV4) &&
3831             bf_get(lpfc_mbx_read_top_fa, la))
3832                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3833                                 "1311 fa %d\n",
3834                                 bf_get(lpfc_mbx_read_top_fa, la));
3835
3836 lpfc_mbx_cmpl_read_topology_free_mbuf:
3837         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
3838 }
3839
3840 /*
3841  * This routine handles processing a REG_LOGIN mailbox
3842  * command upon completion. It is setup in the LPFC_MBOXQ
3843  * as the completion routine when the command is
3844  * handed off to the SLI layer.
3845  */
3846 void
3847 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3848 {
3849         struct lpfc_vport  *vport = pmb->vport;
3850         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3851         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
3852
3853         /* The driver calls the state machine with the pmb pointer
3854          * but wants to make sure a stale ctx_buf isn't acted on.
3855          * The ctx_buf is restored later and cleaned up.
3856          */
3857         pmb->ctx_buf = NULL;
3858         pmb->ctx_ndlp = NULL;
3859
3860         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI | LOG_NODE | LOG_DISCOVERY,
3861                          "0002 rpi:%x DID:%x flg:%x %d x%px\n",
3862                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
3863                          kref_read(&ndlp->kref),
3864                          ndlp);
3865         if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
3866                 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
3867
3868         if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL ||
3869             ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
3870                 /* We rcvd a rscn after issuing this
3871                  * mbox reg login, we may have cycled
3872                  * back through the state and be
3873                  * back at reg login state so this
3874                  * mbox needs to be ignored becase
3875                  * there is another reg login in
3876                  * process.
3877                  */
3878                 spin_lock_irq(&ndlp->lock);
3879                 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
3880                 spin_unlock_irq(&ndlp->lock);
3881
3882                 /*
3883                  * We cannot leave the RPI registered because
3884                  * if we go thru discovery again for this ndlp
3885                  * a subsequent REG_RPI will fail.
3886                  */
3887                 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3888                 lpfc_unreg_rpi(vport, ndlp);
3889         }
3890
3891         /* Call state machine */
3892         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
3893         pmb->ctx_buf = mp;
3894         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
3895
3896         /* decrement the node reference count held for this callback
3897          * function.
3898          */
3899         lpfc_nlp_put(ndlp);
3900
3901         return;
3902 }
3903
3904 static void
3905 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3906 {
3907         MAILBOX_t *mb = &pmb->u.mb;
3908         struct lpfc_vport *vport = pmb->vport;
3909         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3910
3911         switch (mb->mbxStatus) {
3912         case 0x0011:
3913         case 0x0020:
3914                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3915                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
3916                                  mb->mbxStatus);
3917                 break;
3918         /* If VPI is busy, reset the HBA */
3919         case 0x9700:
3920                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3921                         "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n",
3922                         vport->vpi, mb->mbxStatus);
3923                 if (!(phba->pport->load_flag & FC_UNLOADING))
3924                         lpfc_workq_post_event(phba, NULL, NULL,
3925                                 LPFC_EVT_RESET_HBA);
3926         }
3927         spin_lock_irq(shost->host_lock);
3928         vport->vpi_state &= ~LPFC_VPI_REGISTERED;
3929         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3930         spin_unlock_irq(shost->host_lock);
3931         mempool_free(pmb, phba->mbox_mem_pool);
3932         lpfc_cleanup_vports_rrqs(vport, NULL);
3933         /*
3934          * This shost reference might have been taken at the beginning of
3935          * lpfc_vport_delete()
3936          */
3937         if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
3938                 scsi_host_put(shost);
3939 }
3940
3941 int
3942 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
3943 {
3944         struct lpfc_hba  *phba = vport->phba;
3945         LPFC_MBOXQ_t *mbox;
3946         int rc;
3947
3948         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3949         if (!mbox)
3950                 return 1;
3951
3952         lpfc_unreg_vpi(phba, vport->vpi, mbox);
3953         mbox->vport = vport;
3954         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
3955         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3956         if (rc == MBX_NOT_FINISHED) {
3957                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3958                                  "1800 Could not issue unreg_vpi\n");
3959                 mempool_free(mbox, phba->mbox_mem_pool);
3960                 return rc;
3961         }
3962         return 0;
3963 }
3964
3965 static void
3966 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3967 {
3968         struct lpfc_vport *vport = pmb->vport;
3969         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3970         MAILBOX_t *mb = &pmb->u.mb;
3971
3972         switch (mb->mbxStatus) {
3973         case 0x0011:
3974         case 0x9601:
3975         case 0x9602:
3976                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3977                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
3978                                  mb->mbxStatus);
3979                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3980                 spin_lock_irq(shost->host_lock);
3981                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
3982                 spin_unlock_irq(shost->host_lock);
3983                 vport->fc_myDID = 0;
3984
3985                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
3986                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
3987                         if (phba->nvmet_support)
3988                                 lpfc_nvmet_update_targetport(phba);
3989                         else
3990                                 lpfc_nvme_update_localport(vport);
3991                 }
3992                 goto out;
3993         }
3994
3995         spin_lock_irq(shost->host_lock);
3996         vport->vpi_state |= LPFC_VPI_REGISTERED;
3997         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3998         spin_unlock_irq(shost->host_lock);
3999         vport->num_disc_nodes = 0;
4000         /* go thru NPR list and issue ELS PLOGIs */
4001         if (vport->fc_npr_cnt)
4002                 lpfc_els_disc_plogi(vport);
4003
4004         if (!vport->num_disc_nodes) {
4005                 spin_lock_irq(shost->host_lock);
4006                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
4007                 spin_unlock_irq(shost->host_lock);
4008                 lpfc_can_disctmo(vport);
4009         }
4010         vport->port_state = LPFC_VPORT_READY;
4011
4012 out:
4013         mempool_free(pmb, phba->mbox_mem_pool);
4014         return;
4015 }
4016
4017 /**
4018  * lpfc_create_static_vport - Read HBA config region to create static vports.
4019  * @phba: pointer to lpfc hba data structure.
4020  *
4021  * This routine issue a DUMP mailbox command for config region 22 to get
4022  * the list of static vports to be created. The function create vports
4023  * based on the information returned from the HBA.
4024  **/
4025 void
4026 lpfc_create_static_vport(struct lpfc_hba *phba)
4027 {
4028         LPFC_MBOXQ_t *pmb = NULL;
4029         MAILBOX_t *mb;
4030         struct static_vport_info *vport_info;
4031         int mbx_wait_rc = 0, i;
4032         struct fc_vport_identifiers vport_id;
4033         struct fc_vport *new_fc_vport;
4034         struct Scsi_Host *shost;
4035         struct lpfc_vport *vport;
4036         uint16_t offset = 0;
4037         uint8_t *vport_buff;
4038         struct lpfc_dmabuf *mp;
4039         uint32_t byte_count = 0;
4040
4041         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4042         if (!pmb) {
4043                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4044                                 "0542 lpfc_create_static_vport failed to"
4045                                 " allocate mailbox memory\n");
4046                 return;
4047         }
4048         memset(pmb, 0, sizeof(LPFC_MBOXQ_t));
4049         mb = &pmb->u.mb;
4050
4051         vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
4052         if (!vport_info) {
4053                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4054                                 "0543 lpfc_create_static_vport failed to"
4055                                 " allocate vport_info\n");
4056                 mempool_free(pmb, phba->mbox_mem_pool);
4057                 return;
4058         }
4059
4060         vport_buff = (uint8_t *) vport_info;
4061         do {
4062                 /* While loop iteration forces a free dma buffer from
4063                  * the previous loop because the mbox is reused and
4064                  * the dump routine is a single-use construct.
4065                  */
4066                 if (pmb->ctx_buf) {
4067                         mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
4068                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
4069                         kfree(mp);
4070                         pmb->ctx_buf = NULL;
4071                 }
4072                 if (lpfc_dump_static_vport(phba, pmb, offset))
4073                         goto out;
4074
4075                 pmb->vport = phba->pport;
4076                 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb,
4077                                                         LPFC_MBOX_TMO);
4078
4079                 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) {
4080                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4081                                 "0544 lpfc_create_static_vport failed to"
4082                                 " issue dump mailbox command ret 0x%x "
4083                                 "status 0x%x\n",
4084                                 mbx_wait_rc, mb->mbxStatus);
4085                         goto out;
4086                 }
4087
4088                 if (phba->sli_rev == LPFC_SLI_REV4) {
4089                         byte_count = pmb->u.mqe.un.mb_words[5];
4090                         mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
4091                         if (byte_count > sizeof(struct static_vport_info) -
4092                                         offset)
4093                                 byte_count = sizeof(struct static_vport_info)
4094                                         - offset;
4095                         memcpy(vport_buff + offset, mp->virt, byte_count);
4096                         offset += byte_count;
4097                 } else {
4098                         if (mb->un.varDmp.word_cnt >
4099                                 sizeof(struct static_vport_info) - offset)
4100                                 mb->un.varDmp.word_cnt =
4101                                         sizeof(struct static_vport_info)
4102                                                 - offset;
4103                         byte_count = mb->un.varDmp.word_cnt;
4104                         lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
4105                                 vport_buff + offset,
4106                                 byte_count);
4107
4108                         offset += byte_count;
4109                 }
4110
4111         } while (byte_count &&
4112                 offset < sizeof(struct static_vport_info));
4113
4114
4115         if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
4116                 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
4117                         != VPORT_INFO_REV)) {
4118                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4119                                 "0545 lpfc_create_static_vport bad"
4120                                 " information header 0x%x 0x%x\n",
4121                                 le32_to_cpu(vport_info->signature),
4122                                 le32_to_cpu(vport_info->rev) &
4123                                 VPORT_INFO_REV_MASK);
4124
4125                 goto out;
4126         }
4127
4128         shost = lpfc_shost_from_vport(phba->pport);
4129
4130         for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
4131                 memset(&vport_id, 0, sizeof(vport_id));
4132                 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
4133                 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
4134                 if (!vport_id.port_name || !vport_id.node_name)
4135                         continue;
4136
4137                 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
4138                 vport_id.vport_type = FC_PORTTYPE_NPIV;
4139                 vport_id.disable = false;
4140                 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
4141
4142                 if (!new_fc_vport) {
4143                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4144                                 "0546 lpfc_create_static_vport failed to"
4145                                 " create vport\n");
4146                         continue;
4147                 }
4148
4149                 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
4150                 vport->vport_flag |= STATIC_VPORT;
4151         }
4152
4153 out:
4154         kfree(vport_info);
4155         if (mbx_wait_rc != MBX_TIMEOUT)
4156                 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4157 }
4158
4159 /*
4160  * This routine handles processing a Fabric REG_LOGIN mailbox
4161  * command upon completion. It is setup in the LPFC_MBOXQ
4162  * as the completion routine when the command is
4163  * handed off to the SLI layer.
4164  */
4165 void
4166 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4167 {
4168         struct lpfc_vport *vport = pmb->vport;
4169         MAILBOX_t *mb = &pmb->u.mb;
4170         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4171         struct Scsi_Host *shost;
4172
4173         pmb->ctx_ndlp = NULL;
4174
4175         if (mb->mbxStatus) {
4176                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4177                                  "0258 Register Fabric login error: 0x%x\n",
4178                                  mb->mbxStatus);
4179                 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4180                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4181                         /* FLOGI failed, use loop map to make discovery list */
4182                         lpfc_disc_list_loopmap(vport);
4183
4184                         /* Start discovery */
4185                         lpfc_disc_start(vport);
4186                         /* Decrement the reference count to ndlp after the
4187                          * reference to the ndlp are done.
4188                          */
4189                         lpfc_nlp_put(ndlp);
4190                         return;
4191                 }
4192
4193                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
4194                 /* Decrement the reference count to ndlp after the reference
4195                  * to the ndlp are done.
4196                  */
4197                 lpfc_nlp_put(ndlp);
4198                 return;
4199         }
4200
4201         if (phba->sli_rev < LPFC_SLI_REV4)
4202                 ndlp->nlp_rpi = mb->un.varWords[0];
4203         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4204         ndlp->nlp_type |= NLP_FABRIC;
4205         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4206
4207         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
4208                 /* when physical port receive logo donot start
4209                  * vport discovery */
4210                 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
4211                         lpfc_start_fdiscs(phba);
4212                 else {
4213                         shost = lpfc_shost_from_vport(vport);
4214                         spin_lock_irq(shost->host_lock);
4215                         vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ;
4216                         spin_unlock_irq(shost->host_lock);
4217                 }
4218                 lpfc_do_scr_ns_plogi(phba, vport);
4219         }
4220
4221         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4222
4223         /* Drop the reference count from the mbox at the end after
4224          * all the current reference to the ndlp have been done.
4225          */
4226         lpfc_nlp_put(ndlp);
4227         return;
4228 }
4229
4230  /*
4231   * This routine will issue a GID_FT for each FC4 Type supported
4232   * by the driver. ALL GID_FTs must complete before discovery is started.
4233   */
4234 int
4235 lpfc_issue_gidft(struct lpfc_vport *vport)
4236 {
4237         /* Good status, issue CT Request to NameServer */
4238         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4239             (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) {
4240                 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_FCP)) {
4241                         /* Cannot issue NameServer FCP Query, so finish up
4242                          * discovery
4243                          */
4244                         lpfc_printf_vlog(vport, KERN_ERR,
4245                                          LOG_TRACE_EVENT,
4246                                          "0604 %s FC TYPE %x %s\n",
4247                                          "Failed to issue GID_FT to ",
4248                                          FC_TYPE_FCP,
4249                                          "Finishing discovery.");
4250                         return 0;
4251                 }
4252                 vport->gidft_inp++;
4253         }
4254
4255         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4256             (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
4257                 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_NVME)) {
4258                         /* Cannot issue NameServer NVME Query, so finish up
4259                          * discovery
4260                          */
4261                         lpfc_printf_vlog(vport, KERN_ERR,
4262                                          LOG_TRACE_EVENT,
4263                                          "0605 %s FC_TYPE %x %s %d\n",
4264                                          "Failed to issue GID_FT to ",
4265                                          FC_TYPE_NVME,
4266                                          "Finishing discovery: gidftinp ",
4267                                          vport->gidft_inp);
4268                         if (vport->gidft_inp == 0)
4269                                 return 0;
4270                 } else
4271                         vport->gidft_inp++;
4272         }
4273         return vport->gidft_inp;
4274 }
4275
4276 /**
4277  * lpfc_issue_gidpt - issue a GID_PT for all N_Ports
4278  * @vport: The virtual port for which this call is being executed.
4279  *
4280  * This routine will issue a GID_PT to get a list of all N_Ports
4281  *
4282  * Return value :
4283  *   0 - Failure to issue a GID_PT
4284  *   1 - GID_PT issued
4285  **/
4286 int
4287 lpfc_issue_gidpt(struct lpfc_vport *vport)
4288 {
4289         /* Good status, issue CT Request to NameServer */
4290         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) {
4291                 /* Cannot issue NameServer FCP Query, so finish up
4292                  * discovery
4293                  */
4294                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4295                                  "0606 %s Port TYPE %x %s\n",
4296                                  "Failed to issue GID_PT to ",
4297                                  GID_PT_N_PORT,
4298                                  "Finishing discovery.");
4299                 return 0;
4300         }
4301         vport->gidft_inp++;
4302         return 1;
4303 }
4304
4305 /*
4306  * This routine handles processing a NameServer REG_LOGIN mailbox
4307  * command upon completion. It is setup in the LPFC_MBOXQ
4308  * as the completion routine when the command is
4309  * handed off to the SLI layer.
4310  */
4311 void
4312 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4313 {
4314         MAILBOX_t *mb = &pmb->u.mb;
4315         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4316         struct lpfc_vport *vport = pmb->vport;
4317         int rc;
4318
4319         pmb->ctx_ndlp = NULL;
4320         vport->gidft_inp = 0;
4321
4322         if (mb->mbxStatus) {
4323                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4324                                  "0260 Register NameServer error: 0x%x\n",
4325                                  mb->mbxStatus);
4326
4327 out:
4328                 /* decrement the node reference count held for this
4329                  * callback function.
4330                  */
4331                 lpfc_nlp_put(ndlp);
4332                 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4333
4334                 /* If the node is not registered with the scsi or nvme
4335                  * transport, remove the fabric node.  The failed reg_login
4336                  * is terminal.
4337                  */
4338                 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
4339                         spin_lock_irq(&ndlp->lock);
4340                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
4341                         spin_unlock_irq(&ndlp->lock);
4342                         lpfc_nlp_not_used(ndlp);
4343                 }
4344
4345                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4346                         /*
4347                          * RegLogin failed, use loop map to make discovery
4348                          * list
4349                          */
4350                         lpfc_disc_list_loopmap(vport);
4351
4352                         /* Start discovery */
4353                         lpfc_disc_start(vport);
4354                         return;
4355                 }
4356                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
4357                 return;
4358         }
4359
4360         if (phba->sli_rev < LPFC_SLI_REV4)
4361                 ndlp->nlp_rpi = mb->un.varWords[0];
4362         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4363         ndlp->nlp_type |= NLP_FABRIC;
4364         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4365         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
4366                          "0003 rpi:%x DID:%x flg:%x %d x%px\n",
4367                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
4368                          kref_read(&ndlp->kref),
4369                          ndlp);
4370
4371         if (vport->port_state < LPFC_VPORT_READY) {
4372                 /* Link up discovery requires Fabric registration. */
4373                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
4374                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
4375                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
4376                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
4377
4378                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4379                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP))
4380                         lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, FC_TYPE_FCP);
4381
4382                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4383                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME))
4384                         lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0,
4385                                     FC_TYPE_NVME);
4386
4387                 /* Issue SCR just before NameServer GID_FT Query */
4388                 lpfc_issue_els_scr(vport, 0);
4389
4390                 /* Link was bounced or a Fabric LOGO occurred.  Start EDC
4391                  * with initial FW values provided the congestion mode is
4392                  * not off.  Note that signals may or may not be supported
4393                  * by the adapter but FPIN is provided by default for 1
4394                  * or both missing signals support.
4395                  */
4396                 if (phba->cmf_active_mode != LPFC_CFG_OFF) {
4397                         phba->cgn_reg_fpin = phba->cgn_init_reg_fpin;
4398                         phba->cgn_reg_signal = phba->cgn_init_reg_signal;
4399                         rc = lpfc_issue_els_edc(vport, 0);
4400                         lpfc_printf_log(phba, KERN_INFO,
4401                                         LOG_INIT | LOG_ELS | LOG_DISCOVERY,
4402                                         "4220 Issue EDC status x%x Data x%x\n",
4403                                         rc, phba->cgn_init_reg_signal);
4404                 } else if (phba->lmt & LMT_64Gb) {
4405                         /* may send link fault capability descriptor */
4406                         lpfc_issue_els_edc(vport, 0);
4407                 } else {
4408                         lpfc_issue_els_rdf(vport, 0);
4409                 }
4410         }
4411
4412         vport->fc_ns_retry = 0;
4413         if (lpfc_issue_gidft(vport) == 0)
4414                 goto out;
4415
4416         /*
4417          * At this point in time we may need to wait for multiple
4418          * SLI_CTNS_GID_FT CT commands to complete before we start discovery.
4419          *
4420          * decrement the node reference count held for this
4421          * callback function.
4422          */
4423         lpfc_nlp_put(ndlp);
4424         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4425         return;
4426 }
4427
4428 /*
4429  * This routine handles processing a Fabric Controller REG_LOGIN mailbox
4430  * command upon completion. It is setup in the LPFC_MBOXQ
4431  * as the completion routine when the command is handed off to the SLI layer.
4432  */
4433 void
4434 lpfc_mbx_cmpl_fc_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4435 {
4436         struct lpfc_vport *vport = pmb->vport;
4437         MAILBOX_t *mb = &pmb->u.mb;
4438         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4439
4440         pmb->ctx_ndlp = NULL;
4441         if (mb->mbxStatus) {
4442                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4443                                  "0933 %s: Register FC login error: 0x%x\n",
4444                                  __func__, mb->mbxStatus);
4445                 goto out;
4446         }
4447
4448         lpfc_check_nlp_post_devloss(vport, ndlp);
4449
4450         if (phba->sli_rev < LPFC_SLI_REV4)
4451                 ndlp->nlp_rpi = mb->un.varWords[0];
4452
4453         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4454                          "0934 %s: Complete FC x%x RegLogin rpi x%x ste x%x\n",
4455                          __func__, ndlp->nlp_DID, ndlp->nlp_rpi,
4456                          ndlp->nlp_state);
4457
4458         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4459         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
4460         ndlp->nlp_type |= NLP_FABRIC;
4461         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4462
4463  out:
4464         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4465
4466         /* Drop the reference count from the mbox at the end after
4467          * all the current reference to the ndlp have been done.
4468          */
4469         lpfc_nlp_put(ndlp);
4470 }
4471
4472 static void
4473 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4474 {
4475         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4476         struct fc_rport  *rport;
4477         struct lpfc_rport_data *rdata;
4478         struct fc_rport_identifiers rport_ids;
4479         struct lpfc_hba  *phba = vport->phba;
4480         unsigned long flags;
4481
4482         if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4483                 return;
4484
4485         /* Remote port has reappeared. Re-register w/ FC transport */
4486         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
4487         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
4488         rport_ids.port_id = ndlp->nlp_DID;
4489         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
4490
4491
4492         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4493                               "rport add:       did:x%x flg:x%x type x%x",
4494                               ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4495
4496         /* Don't add the remote port if unloading. */
4497         if (vport->load_flag & FC_UNLOADING)
4498                 return;
4499
4500         /*
4501          * Disassociate any older association between this ndlp and rport
4502          */
4503         if (ndlp->rport) {
4504                 rdata = ndlp->rport->dd_data;
4505                 rdata->pnode = NULL;
4506         }
4507
4508         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
4509         if (!rport) {
4510                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
4511                            "Warning: fc_remote_port_add failed\n");
4512                 return;
4513         }
4514
4515         /* Successful port add.  Complete initializing node data */
4516         rport->maxframe_size = ndlp->nlp_maxframe;
4517         rport->supported_classes = ndlp->nlp_class_sup;
4518         rdata = rport->dd_data;
4519         rdata->pnode = lpfc_nlp_get(ndlp);
4520         if (!rdata->pnode) {
4521                 dev_warn(&phba->pcidev->dev,
4522                          "Warning - node ref failed. Unreg rport\n");
4523                 fc_remote_port_delete(rport);
4524                 ndlp->rport = NULL;
4525                 return;
4526         }
4527
4528         spin_lock_irqsave(&ndlp->lock, flags);
4529         ndlp->fc4_xpt_flags |= SCSI_XPT_REGD;
4530         spin_unlock_irqrestore(&ndlp->lock, flags);
4531
4532         if (ndlp->nlp_type & NLP_FCP_TARGET)
4533                 rport_ids.roles |= FC_PORT_ROLE_FCP_TARGET;
4534         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
4535                 rport_ids.roles |= FC_PORT_ROLE_FCP_INITIATOR;
4536         if (ndlp->nlp_type & NLP_NVME_INITIATOR)
4537                 rport_ids.roles |= FC_PORT_ROLE_NVME_INITIATOR;
4538         if (ndlp->nlp_type & NLP_NVME_TARGET)
4539                 rport_ids.roles |= FC_PORT_ROLE_NVME_TARGET;
4540         if (ndlp->nlp_type & NLP_NVME_DISCOVERY)
4541                 rport_ids.roles |= FC_PORT_ROLE_NVME_DISCOVERY;
4542
4543         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
4544                 fc_remote_port_rolechg(rport, rport_ids.roles);
4545
4546         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
4547                          "3183 %s rport x%px DID x%x, role x%x refcnt %d\n",
4548                          __func__, rport, rport->port_id, rport->roles,
4549                          kref_read(&ndlp->kref));
4550
4551         if ((rport->scsi_target_id != -1) &&
4552             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
4553                 ndlp->nlp_sid = rport->scsi_target_id;
4554         }
4555
4556         return;
4557 }
4558
4559 static void
4560 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
4561 {
4562         struct fc_rport *rport = ndlp->rport;
4563         struct lpfc_vport *vport = ndlp->vport;
4564
4565         if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4566                 return;
4567
4568         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4569                 "rport delete:    did:x%x flg:x%x type x%x",
4570                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4571
4572         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4573                          "3184 rport unregister x%06x, rport x%px "
4574                          "xptflg x%x refcnt %d\n",
4575                          ndlp->nlp_DID, rport, ndlp->fc4_xpt_flags,
4576                          kref_read(&ndlp->kref));
4577
4578         fc_remote_port_delete(rport);
4579         lpfc_nlp_put(ndlp);
4580 }
4581
4582 static void
4583 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
4584 {
4585         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4586         unsigned long iflags;
4587
4588         spin_lock_irqsave(shost->host_lock, iflags);
4589         switch (state) {
4590         case NLP_STE_UNUSED_NODE:
4591                 vport->fc_unused_cnt += count;
4592                 break;
4593         case NLP_STE_PLOGI_ISSUE:
4594                 vport->fc_plogi_cnt += count;
4595                 break;
4596         case NLP_STE_ADISC_ISSUE:
4597                 vport->fc_adisc_cnt += count;
4598                 break;
4599         case NLP_STE_REG_LOGIN_ISSUE:
4600                 vport->fc_reglogin_cnt += count;
4601                 break;
4602         case NLP_STE_PRLI_ISSUE:
4603                 vport->fc_prli_cnt += count;
4604                 break;
4605         case NLP_STE_UNMAPPED_NODE:
4606                 vport->fc_unmap_cnt += count;
4607                 break;
4608         case NLP_STE_MAPPED_NODE:
4609                 vport->fc_map_cnt += count;
4610                 break;
4611         case NLP_STE_NPR_NODE:
4612                 if (vport->fc_npr_cnt == 0 && count == -1)
4613                         vport->fc_npr_cnt = 0;
4614                 else
4615                         vport->fc_npr_cnt += count;
4616                 break;
4617         }
4618         spin_unlock_irqrestore(shost->host_lock, iflags);
4619 }
4620
4621 /* Register a node with backend if not already done */
4622 void
4623 lpfc_nlp_reg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4624 {
4625         unsigned long iflags;
4626
4627         lpfc_check_nlp_post_devloss(vport, ndlp);
4628
4629         spin_lock_irqsave(&ndlp->lock, iflags);
4630         if (ndlp->fc4_xpt_flags & NLP_XPT_REGD) {
4631                 /* Already registered with backend, trigger rescan */
4632                 spin_unlock_irqrestore(&ndlp->lock, iflags);
4633
4634                 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD &&
4635                     ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY)) {
4636                         lpfc_nvme_rescan_port(vport, ndlp);
4637                 }
4638                 return;
4639         }
4640
4641         ndlp->fc4_xpt_flags |= NLP_XPT_REGD;
4642         spin_unlock_irqrestore(&ndlp->lock, iflags);
4643
4644         if (lpfc_valid_xpt_node(ndlp)) {
4645                 vport->phba->nport_event_cnt++;
4646                 /*
4647                  * Tell the fc transport about the port, if we haven't
4648                  * already. If we have, and it's a scsi entity, be
4649                  */
4650                 lpfc_register_remote_port(vport, ndlp);
4651         }
4652
4653         /* We are done if we do not have any NVME remote node */
4654         if (!(ndlp->nlp_fc4_type & NLP_FC4_NVME))
4655                 return;
4656
4657         /* Notify the NVME transport of this new rport. */
4658         if (vport->phba->sli_rev >= LPFC_SLI_REV4 &&
4659                         ndlp->nlp_fc4_type & NLP_FC4_NVME) {
4660                 if (vport->phba->nvmet_support == 0) {
4661                         /* Register this rport with the transport.
4662                          * Only NVME Target Rports are registered with
4663                          * the transport.
4664                          */
4665                         if (ndlp->nlp_type & NLP_NVME_TARGET) {
4666                                 vport->phba->nport_event_cnt++;
4667                                 lpfc_nvme_register_port(vport, ndlp);
4668                         }
4669                 } else {
4670                         /* Just take an NDLP ref count since the
4671                          * target does not register rports.
4672                          */
4673                         lpfc_nlp_get(ndlp);
4674                 }
4675         }
4676 }
4677
4678 /* Unregister a node with backend if not already done */
4679 void
4680 lpfc_nlp_unreg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4681 {
4682         unsigned long iflags;
4683
4684         spin_lock_irqsave(&ndlp->lock, iflags);
4685         if (!(ndlp->fc4_xpt_flags & NLP_XPT_REGD)) {
4686                 spin_unlock_irqrestore(&ndlp->lock, iflags);
4687                 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
4688                                  "0999 %s Not regd: ndlp x%px rport x%px DID "
4689                                  "x%x FLG x%x XPT x%x\n",
4690                                   __func__, ndlp, ndlp->rport, ndlp->nlp_DID,
4691                                   ndlp->nlp_flag, ndlp->fc4_xpt_flags);
4692                 return;
4693         }
4694
4695         ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD;
4696         spin_unlock_irqrestore(&ndlp->lock, iflags);
4697
4698         if (ndlp->rport &&
4699             ndlp->fc4_xpt_flags & SCSI_XPT_REGD) {
4700                 vport->phba->nport_event_cnt++;
4701                 lpfc_unregister_remote_port(ndlp);
4702         } else if (!ndlp->rport) {
4703                 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
4704                                  "1999 %s NDLP in devloss x%px DID x%x FLG x%x"
4705                                  " XPT x%x refcnt %d\n",
4706                                  __func__, ndlp, ndlp->nlp_DID, ndlp->nlp_flag,
4707                                  ndlp->fc4_xpt_flags,
4708                                  kref_read(&ndlp->kref));
4709         }
4710
4711         if (ndlp->fc4_xpt_flags & NVME_XPT_REGD) {
4712                 vport->phba->nport_event_cnt++;
4713                 if (vport->phba->nvmet_support == 0) {
4714                         /* Start devloss if target. */
4715                         if (ndlp->nlp_type & NLP_NVME_TARGET)
4716                                 lpfc_nvme_unregister_port(vport, ndlp);
4717                 } else {
4718                         /* NVMET has no upcall. */
4719                         lpfc_nlp_put(ndlp);
4720                 }
4721         }
4722
4723 }
4724
4725 /*
4726  * Adisc state change handling
4727  */
4728 static void
4729 lpfc_handle_adisc_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4730                 int new_state)
4731 {
4732         switch (new_state) {
4733         /*
4734          * Any state to ADISC_ISSUE
4735          * Do nothing, adisc cmpl handling will trigger state changes
4736          */
4737         case NLP_STE_ADISC_ISSUE:
4738                 break;
4739
4740         /*
4741          * ADISC_ISSUE to mapped states
4742          * Trigger a registration with backend, it will be nop if
4743          * already registered
4744          */
4745         case NLP_STE_UNMAPPED_NODE:
4746                 ndlp->nlp_type |= NLP_FC_NODE;
4747                 fallthrough;
4748         case NLP_STE_MAPPED_NODE:
4749                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4750                 lpfc_nlp_reg_node(vport, ndlp);
4751                 break;
4752
4753         /*
4754          * ADISC_ISSUE to non-mapped states
4755          * We are moving from ADISC_ISSUE to a non-mapped state because
4756          * ADISC failed, we would have skipped unregistering with
4757          * backend, attempt it now
4758          */
4759         case NLP_STE_NPR_NODE:
4760                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
4761                 fallthrough;
4762         default:
4763                 lpfc_nlp_unreg_node(vport, ndlp);
4764                 break;
4765         }
4766
4767 }
4768
4769 static void
4770 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4771                        int old_state, int new_state)
4772 {
4773         /* Trap ADISC changes here */
4774         if (new_state == NLP_STE_ADISC_ISSUE ||
4775             old_state == NLP_STE_ADISC_ISSUE) {
4776                 lpfc_handle_adisc_state(vport, ndlp, new_state);
4777                 return;
4778         }
4779
4780         if (new_state == NLP_STE_UNMAPPED_NODE) {
4781                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4782                 ndlp->nlp_type |= NLP_FC_NODE;
4783         }
4784         if (new_state == NLP_STE_MAPPED_NODE)
4785                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4786         if (new_state == NLP_STE_NPR_NODE)
4787                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
4788
4789         /* Reg/Unreg for FCP and NVME Transport interface */
4790         if ((old_state == NLP_STE_MAPPED_NODE ||
4791              old_state == NLP_STE_UNMAPPED_NODE)) {
4792                 /* For nodes marked for ADISC, Handle unreg in ADISC cmpl
4793                  * if linkup. In linkdown do unreg_node
4794                  */
4795                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC) ||
4796                     !lpfc_is_link_up(vport->phba))
4797                         lpfc_nlp_unreg_node(vport, ndlp);
4798         }
4799
4800         if (new_state ==  NLP_STE_MAPPED_NODE ||
4801             new_state == NLP_STE_UNMAPPED_NODE)
4802                 lpfc_nlp_reg_node(vport, ndlp);
4803
4804         /*
4805          * If the node just added to Mapped list was an FCP target,
4806          * but the remote port registration failed or assigned a target
4807          * id outside the presentable range - move the node to the
4808          * Unmapped List.
4809          */
4810         if ((new_state == NLP_STE_MAPPED_NODE) &&
4811             (ndlp->nlp_type & NLP_FCP_TARGET) &&
4812             (!ndlp->rport ||
4813              ndlp->rport->scsi_target_id == -1 ||
4814              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
4815                 spin_lock_irq(&ndlp->lock);
4816                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
4817                 spin_unlock_irq(&ndlp->lock);
4818                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4819         }
4820 }
4821
4822 static char *
4823 lpfc_nlp_state_name(char *buffer, size_t size, int state)
4824 {
4825         static char *states[] = {
4826                 [NLP_STE_UNUSED_NODE] = "UNUSED",
4827                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
4828                 [NLP_STE_ADISC_ISSUE] = "ADISC",
4829                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
4830                 [NLP_STE_PRLI_ISSUE] = "PRLI",
4831                 [NLP_STE_LOGO_ISSUE] = "LOGO",
4832                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
4833                 [NLP_STE_MAPPED_NODE] = "MAPPED",
4834                 [NLP_STE_NPR_NODE] = "NPR",
4835         };
4836
4837         if (state < NLP_STE_MAX_STATE && states[state])
4838                 strlcpy(buffer, states[state], size);
4839         else
4840                 snprintf(buffer, size, "unknown (%d)", state);
4841         return buffer;
4842 }
4843
4844 void
4845 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4846                    int state)
4847 {
4848         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4849         int  old_state = ndlp->nlp_state;
4850         int node_dropped = ndlp->nlp_flag & NLP_DROPPED;
4851         char name1[16], name2[16];
4852
4853         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4854                          "0904 NPort state transition x%06x, %s -> %s\n",
4855                          ndlp->nlp_DID,
4856                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
4857                          lpfc_nlp_state_name(name2, sizeof(name2), state));
4858
4859         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4860                 "node statechg    did:x%x old:%d ste:%d",
4861                 ndlp->nlp_DID, old_state, state);
4862
4863         if (node_dropped && old_state == NLP_STE_UNUSED_NODE &&
4864             state != NLP_STE_UNUSED_NODE) {
4865                 ndlp->nlp_flag &= ~NLP_DROPPED;
4866                 lpfc_nlp_get(ndlp);
4867         }
4868
4869         if (old_state == NLP_STE_NPR_NODE &&
4870             state != NLP_STE_NPR_NODE)
4871                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4872         if (old_state == NLP_STE_UNMAPPED_NODE) {
4873                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
4874                 ndlp->nlp_type &= ~NLP_FC_NODE;
4875         }
4876
4877         if (list_empty(&ndlp->nlp_listp)) {
4878                 spin_lock_irq(shost->host_lock);
4879                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4880                 spin_unlock_irq(shost->host_lock);
4881         } else if (old_state)
4882                 lpfc_nlp_counters(vport, old_state, -1);
4883
4884         ndlp->nlp_state = state;
4885         lpfc_nlp_counters(vport, state, 1);
4886         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
4887 }
4888
4889 void
4890 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4891 {
4892         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4893
4894         if (list_empty(&ndlp->nlp_listp)) {
4895                 spin_lock_irq(shost->host_lock);
4896                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4897                 spin_unlock_irq(shost->host_lock);
4898         }
4899 }
4900
4901 void
4902 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4903 {
4904         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4905
4906         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4907         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4908                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4909         spin_lock_irq(shost->host_lock);
4910         list_del_init(&ndlp->nlp_listp);
4911         spin_unlock_irq(shost->host_lock);
4912         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4913                                 NLP_STE_UNUSED_NODE);
4914 }
4915
4916 /**
4917  * lpfc_initialize_node - Initialize all fields of node object
4918  * @vport: Pointer to Virtual Port object.
4919  * @ndlp: Pointer to FC node object.
4920  * @did: FC_ID of the node.
4921  *
4922  * This function is always called when node object need to be initialized.
4923  * It initializes all the fields of the node object. Although the reference
4924  * to phba from @ndlp can be obtained indirectly through it's reference to
4925  * @vport, a direct reference to phba is taken here by @ndlp. This is due
4926  * to the life-span of the @ndlp might go beyond the existence of @vport as
4927  * the final release of ndlp is determined by its reference count. And, the
4928  * operation on @ndlp needs the reference to phba.
4929  **/
4930 static inline void
4931 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4932         uint32_t did)
4933 {
4934         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
4935         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
4936         timer_setup(&ndlp->nlp_delayfunc, lpfc_els_retry_delay, 0);
4937         INIT_LIST_HEAD(&ndlp->recovery_evt.evt_listp);
4938
4939         ndlp->nlp_DID = did;
4940         ndlp->vport = vport;
4941         ndlp->phba = vport->phba;
4942         ndlp->nlp_sid = NLP_NO_SID;
4943         ndlp->nlp_fc4_type = NLP_FC4_NONE;
4944         kref_init(&ndlp->kref);
4945         atomic_set(&ndlp->cmd_pending, 0);
4946         ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
4947         ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
4948 }
4949
4950 void
4951 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4952 {
4953         /*
4954          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
4955          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
4956          * the ndlp from the vport. The ndlp marked as UNUSED on the list
4957          * until ALL other outstanding threads have completed. We check
4958          * that the ndlp not already in the UNUSED state before we proceed.
4959          */
4960         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
4961                 return;
4962         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
4963         ndlp->nlp_flag |= NLP_DROPPED;
4964         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4965                 lpfc_cleanup_vports_rrqs(vport, ndlp);
4966                 lpfc_unreg_rpi(vport, ndlp);
4967         }
4968
4969         lpfc_nlp_put(ndlp);
4970         return;
4971 }
4972
4973 /*
4974  * Start / ReStart rescue timer for Discovery / RSCN handling
4975  */
4976 void
4977 lpfc_set_disctmo(struct lpfc_vport *vport)
4978 {
4979         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4980         struct lpfc_hba  *phba = vport->phba;
4981         uint32_t tmo;
4982
4983         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
4984                 /* For FAN, timeout should be greater than edtov */
4985                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
4986         } else {
4987                 /* Normal discovery timeout should be > than ELS/CT timeout
4988                  * FC spec states we need 3 * ratov for CT requests
4989                  */
4990                 tmo = ((phba->fc_ratov * 3) + 3);
4991         }
4992
4993
4994         if (!timer_pending(&vport->fc_disctmo)) {
4995                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4996                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
4997                         tmo, vport->port_state, vport->fc_flag);
4998         }
4999
5000         mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo));
5001         spin_lock_irq(shost->host_lock);
5002         vport->fc_flag |= FC_DISC_TMO;
5003         spin_unlock_irq(shost->host_lock);
5004
5005         /* Start Discovery Timer state <hba_state> */
5006         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5007                          "0247 Start Discovery Timer state x%x "
5008                          "Data: x%x x%lx x%x x%x\n",
5009                          vport->port_state, tmo,
5010                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
5011                          vport->fc_adisc_cnt);
5012
5013         return;
5014 }
5015
5016 /*
5017  * Cancel rescue timer for Discovery / RSCN handling
5018  */
5019 int
5020 lpfc_can_disctmo(struct lpfc_vport *vport)
5021 {
5022         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5023         unsigned long iflags;
5024
5025         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
5026                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
5027                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
5028
5029         /* Turn off discovery timer if its running */
5030         if (vport->fc_flag & FC_DISC_TMO ||
5031             timer_pending(&vport->fc_disctmo)) {
5032                 spin_lock_irqsave(shost->host_lock, iflags);
5033                 vport->fc_flag &= ~FC_DISC_TMO;
5034                 spin_unlock_irqrestore(shost->host_lock, iflags);
5035                 del_timer_sync(&vport->fc_disctmo);
5036                 spin_lock_irqsave(&vport->work_port_lock, iflags);
5037                 vport->work_port_events &= ~WORKER_DISC_TMO;
5038                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
5039         }
5040
5041         /* Cancel Discovery Timer state <hba_state> */
5042         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5043                          "0248 Cancel Discovery Timer state x%x "
5044                          "Data: x%x x%x x%x\n",
5045                          vport->port_state, vport->fc_flag,
5046                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
5047         return 0;
5048 }
5049
5050 /*
5051  * Check specified ring for outstanding IOCB on the SLI queue
5052  * Return true if iocb matches the specified nport
5053  */
5054 int
5055 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
5056                     struct lpfc_sli_ring *pring,
5057                     struct lpfc_iocbq *iocb,
5058                     struct lpfc_nodelist *ndlp)
5059 {
5060         struct lpfc_vport *vport = ndlp->vport;
5061         u8 ulp_command;
5062         u16 ulp_context;
5063         u32 remote_id;
5064
5065         if (iocb->vport != vport)
5066                 return 0;
5067
5068         ulp_command = get_job_cmnd(phba, iocb);
5069         ulp_context = get_job_ulpcontext(phba, iocb);
5070         remote_id = get_job_els_rsp64_did(phba, iocb);
5071
5072         if (pring->ringno == LPFC_ELS_RING) {
5073                 switch (ulp_command) {
5074                 case CMD_GEN_REQUEST64_CR:
5075                         if (iocb->ndlp == ndlp)
5076                                 return 1;
5077                         fallthrough;
5078                 case CMD_ELS_REQUEST64_CR:
5079                         if (remote_id == ndlp->nlp_DID)
5080                                 return 1;
5081                         fallthrough;
5082                 case CMD_XMIT_ELS_RSP64_CX:
5083                         if (iocb->ndlp == ndlp)
5084                                 return 1;
5085                 }
5086         } else if (pring->ringno == LPFC_FCP_RING) {
5087                 /* Skip match check if waiting to relogin to FCP target */
5088                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
5089                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
5090                         return 0;
5091                 }
5092                 if (ulp_context == ndlp->nlp_rpi)
5093                         return 1;
5094         }
5095         return 0;
5096 }
5097
5098 static void
5099 __lpfc_dequeue_nport_iocbs(struct lpfc_hba *phba,
5100                 struct lpfc_nodelist *ndlp, struct lpfc_sli_ring *pring,
5101                 struct list_head *dequeue_list)
5102 {
5103         struct lpfc_iocbq *iocb, *next_iocb;
5104
5105         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
5106                 /* Check to see if iocb matches the nport */
5107                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
5108                         /* match, dequeue */
5109                         list_move_tail(&iocb->list, dequeue_list);
5110         }
5111 }
5112
5113 static void
5114 lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba *phba,
5115                 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
5116 {
5117         struct lpfc_sli *psli = &phba->sli;
5118         uint32_t i;
5119
5120         spin_lock_irq(&phba->hbalock);
5121         for (i = 0; i < psli->num_rings; i++)
5122                 __lpfc_dequeue_nport_iocbs(phba, ndlp, &psli->sli3_ring[i],
5123                                                 dequeue_list);
5124         spin_unlock_irq(&phba->hbalock);
5125 }
5126
5127 static void
5128 lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba *phba,
5129                 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
5130 {
5131         struct lpfc_sli_ring *pring;
5132         struct lpfc_queue *qp = NULL;
5133
5134         spin_lock_irq(&phba->hbalock);
5135         list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
5136                 pring = qp->pring;
5137                 if (!pring)
5138                         continue;
5139                 spin_lock(&pring->ring_lock);
5140                 __lpfc_dequeue_nport_iocbs(phba, ndlp, pring, dequeue_list);
5141                 spin_unlock(&pring->ring_lock);
5142         }
5143         spin_unlock_irq(&phba->hbalock);
5144 }
5145
5146 /*
5147  * Free resources / clean up outstanding I/Os
5148  * associated with nlp_rpi in the LPFC_NODELIST entry.
5149  */
5150 static int
5151 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
5152 {
5153         LIST_HEAD(completions);
5154
5155         lpfc_fabric_abort_nport(ndlp);
5156
5157         /*
5158          * Everything that matches on txcmplq will be returned
5159          * by firmware with a no rpi error.
5160          */
5161         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
5162                 if (phba->sli_rev != LPFC_SLI_REV4)
5163                         lpfc_sli3_dequeue_nport_iocbs(phba, ndlp, &completions);
5164                 else
5165                         lpfc_sli4_dequeue_nport_iocbs(phba, ndlp, &completions);
5166         }
5167
5168         /* Cancel all the IOCBs from the completions list */
5169         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5170                               IOERR_SLI_ABORTED);
5171
5172         return 0;
5173 }
5174
5175 /**
5176  * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO
5177  * @phba: Pointer to HBA context object.
5178  * @pmb: Pointer to mailbox object.
5179  *
5180  * This function will issue an ELS LOGO command after completing
5181  * the UNREG_RPI.
5182  **/
5183 static void
5184 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5185 {
5186         struct lpfc_vport  *vport = pmb->vport;
5187         struct lpfc_nodelist *ndlp;
5188
5189         ndlp = (struct lpfc_nodelist *)(pmb->ctx_ndlp);
5190         if (!ndlp)
5191                 return;
5192         lpfc_issue_els_logo(vport, ndlp, 0);
5193
5194         /* Check to see if there are any deferred events to process */
5195         if ((ndlp->nlp_flag & NLP_UNREG_INP) &&
5196             (ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING)) {
5197                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5198                                  "1434 UNREG cmpl deferred logo x%x "
5199                                  "on NPort x%x Data: x%x x%px\n",
5200                                  ndlp->nlp_rpi, ndlp->nlp_DID,
5201                                  ndlp->nlp_defer_did, ndlp);
5202
5203                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5204                 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
5205                 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
5206         } else {
5207                 /* NLP_RELEASE_RPI is only set for SLI4 ports. */
5208                 if (ndlp->nlp_flag & NLP_RELEASE_RPI) {
5209                         lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi);
5210                         spin_lock_irq(&ndlp->lock);
5211                         ndlp->nlp_flag &= ~NLP_RELEASE_RPI;
5212                         ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
5213                         spin_unlock_irq(&ndlp->lock);
5214                 }
5215                 spin_lock_irq(&ndlp->lock);
5216                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5217                 spin_unlock_irq(&ndlp->lock);
5218         }
5219
5220         /* The node has an outstanding reference for the unreg. Now
5221          * that the LOGO action and cleanup are finished, release
5222          * resources.
5223          */
5224         lpfc_nlp_put(ndlp);
5225         mempool_free(pmb, phba->mbox_mem_pool);
5226 }
5227
5228 /*
5229  * Sets the mailbox completion handler to be used for the
5230  * unreg_rpi command. The handler varies based on the state of
5231  * the port and what will be happening to the rpi next.
5232  */
5233 static void
5234 lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba *phba, struct lpfc_vport *vport,
5235         struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox)
5236 {
5237         unsigned long iflags;
5238
5239         /* Driver always gets a reference on the mailbox job
5240          * in support of async jobs.
5241          */
5242         mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
5243         if (!mbox->ctx_ndlp)
5244                 return;
5245
5246         if (ndlp->nlp_flag & NLP_ISSUE_LOGO) {
5247                 mbox->mbox_cmpl = lpfc_nlp_logo_unreg;
5248
5249         } else if (phba->sli_rev == LPFC_SLI_REV4 &&
5250                    (!(vport->load_flag & FC_UNLOADING)) &&
5251                     (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
5252                                       LPFC_SLI_INTF_IF_TYPE_2) &&
5253                     (kref_read(&ndlp->kref) > 0)) {
5254                 mbox->mbox_cmpl = lpfc_sli4_unreg_rpi_cmpl_clr;
5255         } else {
5256                 if (vport->load_flag & FC_UNLOADING) {
5257                         if (phba->sli_rev == LPFC_SLI_REV4) {
5258                                 spin_lock_irqsave(&ndlp->lock, iflags);
5259                                 ndlp->nlp_flag |= NLP_RELEASE_RPI;
5260                                 spin_unlock_irqrestore(&ndlp->lock, iflags);
5261                         }
5262                 }
5263                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5264         }
5265 }
5266
5267 /*
5268  * Free rpi associated with LPFC_NODELIST entry.
5269  * This routine is called from lpfc_freenode(), when we are removing
5270  * a LPFC_NODELIST entry. It is also called if the driver initiates a
5271  * LOGO that completes successfully, and we are waiting to PLOGI back
5272  * to the remote NPort. In addition, it is called after we receive
5273  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
5274  * we are waiting to PLOGI back to the remote NPort.
5275  */
5276 int
5277 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5278 {
5279         struct lpfc_hba *phba = vport->phba;
5280         LPFC_MBOXQ_t    *mbox;
5281         int rc, acc_plogi = 1;
5282         uint16_t rpi;
5283
5284         if (ndlp->nlp_flag & NLP_RPI_REGISTERED ||
5285             ndlp->nlp_flag & NLP_REG_LOGIN_SEND) {
5286                 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
5287                         lpfc_printf_vlog(vport, KERN_INFO,
5288                                          LOG_NODE | LOG_DISCOVERY,
5289                                          "3366 RPI x%x needs to be "
5290                                          "unregistered nlp_flag x%x "
5291                                          "did x%x\n",
5292                                          ndlp->nlp_rpi, ndlp->nlp_flag,
5293                                          ndlp->nlp_DID);
5294
5295                 /* If there is already an UNREG in progress for this ndlp,
5296                  * no need to queue up another one.
5297                  */
5298                 if (ndlp->nlp_flag & NLP_UNREG_INP) {
5299                         lpfc_printf_vlog(vport, KERN_INFO,
5300                                          LOG_NODE | LOG_DISCOVERY,
5301                                          "1436 unreg_rpi SKIP UNREG x%x on "
5302                                          "NPort x%x deferred x%x  flg x%x "
5303                                          "Data: x%px\n",
5304                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5305                                          ndlp->nlp_defer_did,
5306                                          ndlp->nlp_flag, ndlp);
5307                         goto out;
5308                 }
5309
5310                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5311                 if (mbox) {
5312                         /* SLI4 ports require the physical rpi value. */
5313                         rpi = ndlp->nlp_rpi;
5314                         if (phba->sli_rev == LPFC_SLI_REV4)
5315                                 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
5316
5317                         lpfc_unreg_login(phba, vport->vpi, rpi, mbox);
5318                         mbox->vport = vport;
5319                         lpfc_set_unreg_login_mbx_cmpl(phba, vport, ndlp, mbox);
5320                         if (!mbox->ctx_ndlp) {
5321                                 mempool_free(mbox, phba->mbox_mem_pool);
5322                                 return 1;
5323                         }
5324
5325                         if (mbox->mbox_cmpl == lpfc_sli4_unreg_rpi_cmpl_clr)
5326                                 /*
5327                                  * accept PLOGIs after unreg_rpi_cmpl
5328                                  */
5329                                 acc_plogi = 0;
5330                         if (((ndlp->nlp_DID & Fabric_DID_MASK) !=
5331                             Fabric_DID_MASK) &&
5332                             (!(vport->fc_flag & FC_OFFLINE_MODE)))
5333                                 ndlp->nlp_flag |= NLP_UNREG_INP;
5334
5335                         lpfc_printf_vlog(vport, KERN_INFO,
5336                                          LOG_NODE | LOG_DISCOVERY,
5337                                          "1433 unreg_rpi UNREG x%x on "
5338                                          "NPort x%x deferred flg x%x "
5339                                          "Data:x%px\n",
5340                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5341                                          ndlp->nlp_flag, ndlp);
5342
5343                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5344                         if (rc == MBX_NOT_FINISHED) {
5345                                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5346                                 mempool_free(mbox, phba->mbox_mem_pool);
5347                                 acc_plogi = 1;
5348                                 lpfc_nlp_put(ndlp);
5349                         }
5350                 } else {
5351                         lpfc_printf_vlog(vport, KERN_INFO,
5352                                          LOG_NODE | LOG_DISCOVERY,
5353                                          "1444 Failed to allocate mempool "
5354                                          "unreg_rpi UNREG x%x, "
5355                                          "DID x%x, flag x%x, "
5356                                          "ndlp x%px\n",
5357                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5358                                          ndlp->nlp_flag, ndlp);
5359
5360                         /* Because mempool_alloc failed, we
5361                          * will issue a LOGO here and keep the rpi alive if
5362                          * not unloading.
5363                          */
5364                         if (!(vport->load_flag & FC_UNLOADING)) {
5365                                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5366                                 lpfc_issue_els_logo(vport, ndlp, 0);
5367                                 ndlp->nlp_prev_state = ndlp->nlp_state;
5368                                 lpfc_nlp_set_state(vport, ndlp,
5369                                                    NLP_STE_NPR_NODE);
5370                         }
5371
5372                         return 1;
5373                 }
5374                 lpfc_no_rpi(phba, ndlp);
5375 out:
5376                 if (phba->sli_rev != LPFC_SLI_REV4)
5377                         ndlp->nlp_rpi = 0;
5378                 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
5379                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
5380                 if (acc_plogi)
5381                         ndlp->nlp_flag &= ~NLP_LOGO_ACC;
5382                 return 1;
5383         }
5384         ndlp->nlp_flag &= ~NLP_LOGO_ACC;
5385         return 0;
5386 }
5387
5388 /**
5389  * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
5390  * @phba: pointer to lpfc hba data structure.
5391  *
5392  * This routine is invoked to unregister all the currently registered RPIs
5393  * to the HBA.
5394  **/
5395 void
5396 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
5397 {
5398         struct lpfc_vport **vports;
5399         struct lpfc_nodelist *ndlp;
5400         struct Scsi_Host *shost;
5401         int i;
5402
5403         vports = lpfc_create_vport_work_array(phba);
5404         if (!vports) {
5405                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5406                                 "2884 Vport array allocation failed \n");
5407                 return;
5408         }
5409         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5410                 shost = lpfc_shost_from_vport(vports[i]);
5411                 spin_lock_irq(shost->host_lock);
5412                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
5413                         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
5414                                 /* The mempool_alloc might sleep */
5415                                 spin_unlock_irq(shost->host_lock);
5416                                 lpfc_unreg_rpi(vports[i], ndlp);
5417                                 spin_lock_irq(shost->host_lock);
5418                         }
5419                 }
5420                 spin_unlock_irq(shost->host_lock);
5421         }
5422         lpfc_destroy_vport_work_array(phba, vports);
5423 }
5424
5425 void
5426 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
5427 {
5428         struct lpfc_hba  *phba  = vport->phba;
5429         LPFC_MBOXQ_t     *mbox;
5430         int rc;
5431
5432         if (phba->sli_rev == LPFC_SLI_REV4) {
5433                 lpfc_sli4_unreg_all_rpis(vport);
5434                 return;
5435         }
5436
5437         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5438         if (mbox) {
5439                 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT,
5440                                  mbox);
5441                 mbox->vport = vport;
5442                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5443                 mbox->ctx_ndlp = NULL;
5444                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5445                 if (rc != MBX_TIMEOUT)
5446                         mempool_free(mbox, phba->mbox_mem_pool);
5447
5448                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5449                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5450                                          "1836 Could not issue "
5451                                          "unreg_login(all_rpis) status %d\n",
5452                                          rc);
5453         }
5454 }
5455
5456 void
5457 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
5458 {
5459         struct lpfc_hba  *phba  = vport->phba;
5460         LPFC_MBOXQ_t     *mbox;
5461         int rc;
5462
5463         /* Unreg DID is an SLI3 operation. */
5464         if (phba->sli_rev > LPFC_SLI_REV3)
5465                 return;
5466
5467         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5468         if (mbox) {
5469                 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS,
5470                                mbox);
5471                 mbox->vport = vport;
5472                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5473                 mbox->ctx_ndlp = NULL;
5474                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5475                 if (rc != MBX_TIMEOUT)
5476                         mempool_free(mbox, phba->mbox_mem_pool);
5477
5478                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5479                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5480                                          "1815 Could not issue "
5481                                          "unreg_did (default rpis) status %d\n",
5482                                          rc);
5483         }
5484 }
5485
5486 /*
5487  * Free resources associated with LPFC_NODELIST entry
5488  * so it can be freed.
5489  */
5490 static int
5491 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5492 {
5493         struct lpfc_hba  *phba = vport->phba;
5494         LPFC_MBOXQ_t *mb, *nextmb;
5495
5496         /* Cleanup node for NPort <nlp_DID> */
5497         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5498                          "0900 Cleanup node for NPort x%x "
5499                          "Data: x%x x%x x%x\n",
5500                          ndlp->nlp_DID, ndlp->nlp_flag,
5501                          ndlp->nlp_state, ndlp->nlp_rpi);
5502         lpfc_dequeue_node(vport, ndlp);
5503
5504         /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */
5505
5506         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
5507         if ((mb = phba->sli.mbox_active)) {
5508                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5509                    !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5510                    (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
5511                         mb->ctx_ndlp = NULL;
5512                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5513                 }
5514         }
5515
5516         spin_lock_irq(&phba->hbalock);
5517         /* Cleanup REG_LOGIN completions which are not yet processed */
5518         list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
5519                 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) ||
5520                         (mb->mbox_flag & LPFC_MBX_IMED_UNREG) ||
5521                         (ndlp != (struct lpfc_nodelist *)mb->ctx_ndlp))
5522                         continue;
5523
5524                 mb->ctx_ndlp = NULL;
5525                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5526         }
5527
5528         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
5529                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5530                    !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5531                     (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
5532                         list_del(&mb->list);
5533                         lpfc_mbox_rsrc_cleanup(phba, mb, MBOX_THD_LOCKED);
5534
5535                         /* Don't invoke lpfc_nlp_put. The driver is in
5536                          * lpfc_nlp_release context.
5537                          */
5538                 }
5539         }
5540         spin_unlock_irq(&phba->hbalock);
5541
5542         lpfc_els_abort(phba, ndlp);
5543
5544         spin_lock_irq(&ndlp->lock);
5545         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
5546         spin_unlock_irq(&ndlp->lock);
5547
5548         ndlp->nlp_last_elscmd = 0;
5549         del_timer_sync(&ndlp->nlp_delayfunc);
5550
5551         list_del_init(&ndlp->els_retry_evt.evt_listp);
5552         list_del_init(&ndlp->dev_loss_evt.evt_listp);
5553         list_del_init(&ndlp->recovery_evt.evt_listp);
5554         lpfc_cleanup_vports_rrqs(vport, ndlp);
5555
5556         if (phba->sli_rev == LPFC_SLI_REV4)
5557                 ndlp->nlp_flag |= NLP_RELEASE_RPI;
5558
5559         return 0;
5560 }
5561
5562 static int
5563 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
5564               uint32_t did)
5565 {
5566         D_ID mydid, ndlpdid, matchdid;
5567
5568         if (did == Bcast_DID)
5569                 return 0;
5570
5571         /* First check for Direct match */
5572         if (ndlp->nlp_DID == did)
5573                 return 1;
5574
5575         /* Next check for area/domain identically equals 0 match */
5576         mydid.un.word = vport->fc_myDID;
5577         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
5578                 return 0;
5579         }
5580
5581         matchdid.un.word = did;
5582         ndlpdid.un.word = ndlp->nlp_DID;
5583         if (matchdid.un.b.id == ndlpdid.un.b.id) {
5584                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
5585                     (mydid.un.b.area == matchdid.un.b.area)) {
5586                         /* This code is supposed to match the ID
5587                          * for a private loop device that is
5588                          * connect to fl_port. But we need to
5589                          * check that the port did not just go
5590                          * from pt2pt to fabric or we could end
5591                          * up matching ndlp->nlp_DID 000001 to
5592                          * fabric DID 0x20101
5593                          */
5594                         if ((ndlpdid.un.b.domain == 0) &&
5595                             (ndlpdid.un.b.area == 0)) {
5596                                 if (ndlpdid.un.b.id &&
5597                                     vport->phba->fc_topology ==
5598                                     LPFC_TOPOLOGY_LOOP)
5599                                         return 1;
5600                         }
5601                         return 0;
5602                 }
5603
5604                 matchdid.un.word = ndlp->nlp_DID;
5605                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
5606                     (mydid.un.b.area == ndlpdid.un.b.area)) {
5607                         if ((matchdid.un.b.domain == 0) &&
5608                             (matchdid.un.b.area == 0)) {
5609                                 if (matchdid.un.b.id)
5610                                         return 1;
5611                         }
5612                 }
5613         }
5614         return 0;
5615 }
5616
5617 /* Search for a nodelist entry */
5618 static struct lpfc_nodelist *
5619 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5620 {
5621         struct lpfc_nodelist *ndlp;
5622         uint32_t data1;
5623
5624         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5625                 if (lpfc_matchdid(vport, ndlp, did)) {
5626                         data1 = (((uint32_t)ndlp->nlp_state << 24) |
5627                                  ((uint32_t)ndlp->nlp_xri << 16) |
5628                                  ((uint32_t)ndlp->nlp_type << 8)
5629                                  );
5630                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5631                                          "0929 FIND node DID "
5632                                          "Data: x%px x%x x%x x%x x%x x%px\n",
5633                                          ndlp, ndlp->nlp_DID,
5634                                          ndlp->nlp_flag, data1, ndlp->nlp_rpi,
5635                                          ndlp->active_rrqs_xri_bitmap);
5636                         return ndlp;
5637                 }
5638         }
5639
5640         /* FIND node did <did> NOT FOUND */
5641         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5642                          "0932 FIND node did x%x NOT FOUND.\n", did);
5643         return NULL;
5644 }
5645
5646 struct lpfc_nodelist *
5647 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5648 {
5649         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5650         struct lpfc_nodelist *ndlp;
5651         unsigned long iflags;
5652
5653         spin_lock_irqsave(shost->host_lock, iflags);
5654         ndlp = __lpfc_findnode_did(vport, did);
5655         spin_unlock_irqrestore(shost->host_lock, iflags);
5656         return ndlp;
5657 }
5658
5659 struct lpfc_nodelist *
5660 lpfc_findnode_mapped(struct lpfc_vport *vport)
5661 {
5662         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5663         struct lpfc_nodelist *ndlp;
5664         uint32_t data1;
5665         unsigned long iflags;
5666
5667         spin_lock_irqsave(shost->host_lock, iflags);
5668
5669         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5670                 if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE ||
5671                     ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
5672                         data1 = (((uint32_t)ndlp->nlp_state << 24) |
5673                                  ((uint32_t)ndlp->nlp_xri << 16) |
5674                                  ((uint32_t)ndlp->nlp_type << 8) |
5675                                  ((uint32_t)ndlp->nlp_rpi & 0xff));
5676                         spin_unlock_irqrestore(shost->host_lock, iflags);
5677                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5678                                          "2025 FIND node DID "
5679                                          "Data: x%px x%x x%x x%x x%px\n",
5680                                          ndlp, ndlp->nlp_DID,
5681                                          ndlp->nlp_flag, data1,
5682                                          ndlp->active_rrqs_xri_bitmap);
5683                         return ndlp;
5684                 }
5685         }
5686         spin_unlock_irqrestore(shost->host_lock, iflags);
5687
5688         /* FIND node did <did> NOT FOUND */
5689         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5690                          "2026 FIND mapped did NOT FOUND.\n");
5691         return NULL;
5692 }
5693
5694 struct lpfc_nodelist *
5695 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
5696 {
5697         struct lpfc_nodelist *ndlp;
5698
5699         ndlp = lpfc_findnode_did(vport, did);
5700         if (!ndlp) {
5701                 if (vport->phba->nvmet_support)
5702                         return NULL;
5703                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
5704                     lpfc_rscn_payload_check(vport, did) == 0)
5705                         return NULL;
5706                 ndlp = lpfc_nlp_init(vport, did);
5707                 if (!ndlp)
5708                         return NULL;
5709                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5710
5711                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5712                                  "6453 Setup New Node 2B_DISC x%x "
5713                                  "Data:x%x x%x x%x\n",
5714                                  ndlp->nlp_DID, ndlp->nlp_flag,
5715                                  ndlp->nlp_state, vport->fc_flag);
5716
5717                 spin_lock_irq(&ndlp->lock);
5718                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5719                 spin_unlock_irq(&ndlp->lock);
5720                 return ndlp;
5721         }
5722
5723         /* The NVME Target does not want to actively manage an rport.
5724          * The goal is to allow the target to reset its state and clear
5725          * pending IO in preparation for the initiator to recover.
5726          */
5727         if ((vport->fc_flag & FC_RSCN_MODE) &&
5728             !(vport->fc_flag & FC_NDISC_ACTIVE)) {
5729                 if (lpfc_rscn_payload_check(vport, did)) {
5730
5731                         /* Since this node is marked for discovery,
5732                          * delay timeout is not needed.
5733                          */
5734                         lpfc_cancel_retry_delay_tmo(vport, ndlp);
5735
5736                         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5737                                          "6455 Setup RSCN Node 2B_DISC x%x "
5738                                          "Data:x%x x%x x%x\n",
5739                                          ndlp->nlp_DID, ndlp->nlp_flag,
5740                                          ndlp->nlp_state, vport->fc_flag);
5741
5742                         /* NVME Target mode waits until rport is known to be
5743                          * impacted by the RSCN before it transitions.  No
5744                          * active management - just go to NPR provided the
5745                          * node had a valid login.
5746                          */
5747                         if (vport->phba->nvmet_support)
5748                                 return ndlp;
5749
5750                         /* If we've already received a PLOGI from this NPort
5751                          * we don't need to try to discover it again.
5752                          */
5753                         if (ndlp->nlp_flag & NLP_RCV_PLOGI &&
5754                             !(ndlp->nlp_type &
5755                              (NLP_FCP_TARGET | NLP_NVME_TARGET)))
5756                                 return NULL;
5757
5758                         ndlp->nlp_prev_state = ndlp->nlp_state;
5759                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5760
5761                         spin_lock_irq(&ndlp->lock);
5762                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5763                         spin_unlock_irq(&ndlp->lock);
5764                 } else {
5765                         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5766                                          "6456 Skip Setup RSCN Node x%x "
5767                                          "Data:x%x x%x x%x\n",
5768                                          ndlp->nlp_DID, ndlp->nlp_flag,
5769                                          ndlp->nlp_state, vport->fc_flag);
5770                         ndlp = NULL;
5771                 }
5772         } else {
5773                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5774                                  "6457 Setup Active Node 2B_DISC x%x "
5775                                  "Data:x%x x%x x%x\n",
5776                                  ndlp->nlp_DID, ndlp->nlp_flag,
5777                                  ndlp->nlp_state, vport->fc_flag);
5778
5779                 /* If the initiator received a PLOGI from this NPort or if the
5780                  * initiator is already in the process of discovery on it,
5781                  * there's no need to try to discover it again.
5782                  */
5783                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
5784                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5785                     (!vport->phba->nvmet_support &&
5786                      ndlp->nlp_flag & NLP_RCV_PLOGI))
5787                         return NULL;
5788
5789                 if (vport->phba->nvmet_support)
5790                         return ndlp;
5791
5792                 /* Moving to NPR state clears unsolicited flags and
5793                  * allows for rediscovery
5794                  */
5795                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5796
5797                 spin_lock_irq(&ndlp->lock);
5798                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5799                 spin_unlock_irq(&ndlp->lock);
5800         }
5801         return ndlp;
5802 }
5803
5804 /* Build a list of nodes to discover based on the loopmap */
5805 void
5806 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
5807 {
5808         struct lpfc_hba  *phba = vport->phba;
5809         int j;
5810         uint32_t alpa, index;
5811
5812         if (!lpfc_is_link_up(phba))
5813                 return;
5814
5815         if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
5816                 return;
5817
5818         /* Check for loop map present or not */
5819         if (phba->alpa_map[0]) {
5820                 for (j = 1; j <= phba->alpa_map[0]; j++) {
5821                         alpa = phba->alpa_map[j];
5822                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
5823                                 continue;
5824                         lpfc_setup_disc_node(vport, alpa);
5825                 }
5826         } else {
5827                 /* No alpamap, so try all alpa's */
5828                 for (j = 0; j < FC_MAXLOOP; j++) {
5829                         /* If cfg_scan_down is set, start from highest
5830                          * ALPA (0xef) to lowest (0x1).
5831                          */
5832                         if (vport->cfg_scan_down)
5833                                 index = j;
5834                         else
5835                                 index = FC_MAXLOOP - j - 1;
5836                         alpa = lpfcAlpaArray[index];
5837                         if ((vport->fc_myDID & 0xff) == alpa)
5838                                 continue;
5839                         lpfc_setup_disc_node(vport, alpa);
5840                 }
5841         }
5842         return;
5843 }
5844
5845 /* SLI3 only */
5846 void
5847 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
5848 {
5849         LPFC_MBOXQ_t *mbox;
5850         struct lpfc_sli *psli = &phba->sli;
5851         struct lpfc_sli_ring *extra_ring = &psli->sli3_ring[LPFC_EXTRA_RING];
5852         struct lpfc_sli_ring *fcp_ring   = &psli->sli3_ring[LPFC_FCP_RING];
5853         int  rc;
5854
5855         /*
5856          * if it's not a physical port or if we already send
5857          * clear_la then don't send it.
5858          */
5859         if ((phba->link_state >= LPFC_CLEAR_LA) ||
5860             (vport->port_type != LPFC_PHYSICAL_PORT) ||
5861                 (phba->sli_rev == LPFC_SLI_REV4))
5862                 return;
5863
5864                         /* Link up discovery */
5865         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
5866                 phba->link_state = LPFC_CLEAR_LA;
5867                 lpfc_clear_la(phba, mbox);
5868                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
5869                 mbox->vport = vport;
5870                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5871                 if (rc == MBX_NOT_FINISHED) {
5872                         mempool_free(mbox, phba->mbox_mem_pool);
5873                         lpfc_disc_flush_list(vport);
5874                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5875                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5876                         phba->link_state = LPFC_HBA_ERROR;
5877                 }
5878         }
5879 }
5880
5881 /* Reg_vpi to tell firmware to resume normal operations */
5882 void
5883 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
5884 {
5885         LPFC_MBOXQ_t *regvpimbox;
5886
5887         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5888         if (regvpimbox) {
5889                 lpfc_reg_vpi(vport, regvpimbox);
5890                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
5891                 regvpimbox->vport = vport;
5892                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
5893                                         == MBX_NOT_FINISHED) {
5894                         mempool_free(regvpimbox, phba->mbox_mem_pool);
5895                 }
5896         }
5897 }
5898
5899 /* Start Link up / RSCN discovery on NPR nodes */
5900 void
5901 lpfc_disc_start(struct lpfc_vport *vport)
5902 {
5903         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5904         struct lpfc_hba  *phba = vport->phba;
5905         uint32_t num_sent;
5906         uint32_t clear_la_pending;
5907
5908         if (!lpfc_is_link_up(phba)) {
5909                 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
5910                                  "3315 Link is not up %x\n",
5911                                  phba->link_state);
5912                 return;
5913         }
5914
5915         if (phba->link_state == LPFC_CLEAR_LA)
5916                 clear_la_pending = 1;
5917         else
5918                 clear_la_pending = 0;
5919
5920         if (vport->port_state < LPFC_VPORT_READY)
5921                 vport->port_state = LPFC_DISC_AUTH;
5922
5923         lpfc_set_disctmo(vport);
5924
5925         vport->fc_prevDID = vport->fc_myDID;
5926         vport->num_disc_nodes = 0;
5927
5928         /* Start Discovery state <hba_state> */
5929         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5930                          "0202 Start Discovery port state x%x "
5931                          "flg x%x Data: x%x x%x x%x\n",
5932                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
5933                          vport->fc_adisc_cnt, vport->fc_npr_cnt);
5934
5935         /* First do ADISCs - if any */
5936         num_sent = lpfc_els_disc_adisc(vport);
5937
5938         if (num_sent)
5939                 return;
5940
5941         /* Register the VPI for SLI3, NPIV only. */
5942         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
5943             !(vport->fc_flag & FC_PT2PT) &&
5944             !(vport->fc_flag & FC_RSCN_MODE) &&
5945             (phba->sli_rev < LPFC_SLI_REV4)) {
5946                 lpfc_issue_clear_la(phba, vport);
5947                 lpfc_issue_reg_vpi(phba, vport);
5948                 return;
5949         }
5950
5951         /*
5952          * For SLI2, we need to set port_state to READY and continue
5953          * discovery.
5954          */
5955         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
5956                 /* If we get here, there is nothing to ADISC */
5957                 lpfc_issue_clear_la(phba, vport);
5958
5959                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
5960                         vport->num_disc_nodes = 0;
5961                         /* go thru NPR nodes and issue ELS PLOGIs */
5962                         if (vport->fc_npr_cnt)
5963                                 lpfc_els_disc_plogi(vport);
5964
5965                         if (!vport->num_disc_nodes) {
5966                                 spin_lock_irq(shost->host_lock);
5967                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
5968                                 spin_unlock_irq(shost->host_lock);
5969                                 lpfc_can_disctmo(vport);
5970                         }
5971                 }
5972                 vport->port_state = LPFC_VPORT_READY;
5973         } else {
5974                 /* Next do PLOGIs - if any */
5975                 num_sent = lpfc_els_disc_plogi(vport);
5976
5977                 if (num_sent)
5978                         return;
5979
5980                 if (vport->fc_flag & FC_RSCN_MODE) {
5981                         /* Check to see if more RSCNs came in while we
5982                          * were processing this one.
5983                          */
5984                         if ((vport->fc_rscn_id_cnt == 0) &&
5985                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
5986                                 spin_lock_irq(shost->host_lock);
5987                                 vport->fc_flag &= ~FC_RSCN_MODE;
5988                                 spin_unlock_irq(shost->host_lock);
5989                                 lpfc_can_disctmo(vport);
5990                         } else
5991                                 lpfc_els_handle_rscn(vport);
5992                 }
5993         }
5994         return;
5995 }
5996
5997 /*
5998  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
5999  *  ring the match the sppecified nodelist.
6000  */
6001 static void
6002 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
6003 {
6004         LIST_HEAD(completions);
6005         struct lpfc_iocbq    *iocb, *next_iocb;
6006         struct lpfc_sli_ring *pring;
6007         u32 ulp_command;
6008
6009         pring = lpfc_phba_elsring(phba);
6010         if (unlikely(!pring))
6011                 return;
6012
6013         /* Error matching iocb on txq or txcmplq
6014          * First check the txq.
6015          */
6016         spin_lock_irq(&phba->hbalock);
6017         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
6018                 if (iocb->ndlp != ndlp)
6019                         continue;
6020
6021                 ulp_command = get_job_cmnd(phba, iocb);
6022
6023                 if (ulp_command == CMD_ELS_REQUEST64_CR ||
6024                     ulp_command == CMD_XMIT_ELS_RSP64_CX) {
6025
6026                         list_move_tail(&iocb->list, &completions);
6027                 }
6028         }
6029
6030         /* Next check the txcmplq */
6031         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
6032                 if (iocb->ndlp != ndlp)
6033                         continue;
6034
6035                 ulp_command = get_job_cmnd(phba, iocb);
6036
6037                 if (ulp_command == CMD_ELS_REQUEST64_CR ||
6038                     ulp_command == CMD_XMIT_ELS_RSP64_CX) {
6039                         lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL);
6040                 }
6041         }
6042         spin_unlock_irq(&phba->hbalock);
6043
6044         /* Make sure HBA is alive */
6045         lpfc_issue_hb_tmo(phba);
6046
6047         /* Cancel all the IOCBs from the completions list */
6048         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
6049                               IOERR_SLI_ABORTED);
6050 }
6051
6052 static void
6053 lpfc_disc_flush_list(struct lpfc_vport *vport)
6054 {
6055         struct lpfc_nodelist *ndlp, *next_ndlp;
6056         struct lpfc_hba *phba = vport->phba;
6057
6058         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
6059                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6060                                          nlp_listp) {
6061                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
6062                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
6063                                 lpfc_free_tx(phba, ndlp);
6064                         }
6065                 }
6066         }
6067 }
6068
6069 /*
6070  * lpfc_notify_xport_npr - notifies xport of node disappearance
6071  * @vport: Pointer to Virtual Port object.
6072  *
6073  * Transitions all ndlps to NPR state.  When lpfc_nlp_set_state
6074  * calls lpfc_nlp_state_cleanup, the ndlp->rport is unregistered
6075  * and transport notified that the node is gone.
6076  * Return Code:
6077  *      none
6078  */
6079 static void
6080 lpfc_notify_xport_npr(struct lpfc_vport *vport)
6081 {
6082         struct lpfc_nodelist *ndlp, *next_ndlp;
6083
6084         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6085                                  nlp_listp) {
6086                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
6087         }
6088 }
6089 void
6090 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
6091 {
6092         lpfc_els_flush_rscn(vport);
6093         lpfc_els_flush_cmd(vport);
6094         lpfc_disc_flush_list(vport);
6095         if (pci_channel_offline(vport->phba->pcidev))
6096                 lpfc_notify_xport_npr(vport);
6097 }
6098
6099 /*****************************************************************************/
6100 /*
6101  * NAME:     lpfc_disc_timeout
6102  *
6103  * FUNCTION: Fibre Channel driver discovery timeout routine.
6104  *
6105  * EXECUTION ENVIRONMENT: interrupt only
6106  *
6107  * CALLED FROM:
6108  *      Timer function
6109  *
6110  * RETURNS:
6111  *      none
6112  */
6113 /*****************************************************************************/
6114 void
6115 lpfc_disc_timeout(struct timer_list *t)
6116 {
6117         struct lpfc_vport *vport = from_timer(vport, t, fc_disctmo);
6118         struct lpfc_hba   *phba = vport->phba;
6119         uint32_t tmo_posted;
6120         unsigned long flags = 0;
6121
6122         if (unlikely(!phba))
6123                 return;
6124
6125         spin_lock_irqsave(&vport->work_port_lock, flags);
6126         tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
6127         if (!tmo_posted)
6128                 vport->work_port_events |= WORKER_DISC_TMO;
6129         spin_unlock_irqrestore(&vport->work_port_lock, flags);
6130
6131         if (!tmo_posted)
6132                 lpfc_worker_wake_up(phba);
6133         return;
6134 }
6135
6136 static void
6137 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
6138 {
6139         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6140         struct lpfc_hba  *phba = vport->phba;
6141         struct lpfc_sli  *psli = &phba->sli;
6142         struct lpfc_nodelist *ndlp, *next_ndlp;
6143         LPFC_MBOXQ_t *initlinkmbox;
6144         int rc, clrlaerr = 0;
6145
6146         if (!(vport->fc_flag & FC_DISC_TMO))
6147                 return;
6148
6149         spin_lock_irq(shost->host_lock);
6150         vport->fc_flag &= ~FC_DISC_TMO;
6151         spin_unlock_irq(shost->host_lock);
6152
6153         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6154                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
6155                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
6156
6157         switch (vport->port_state) {
6158
6159         case LPFC_LOCAL_CFG_LINK:
6160                 /*
6161                  * port_state is identically  LPFC_LOCAL_CFG_LINK while
6162                  * waiting for FAN timeout
6163                  */
6164                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
6165                                  "0221 FAN timeout\n");
6166
6167                 /* Start discovery by sending FLOGI, clean up old rpis */
6168                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6169                                          nlp_listp) {
6170                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
6171                                 continue;
6172                         if (ndlp->nlp_type & NLP_FABRIC) {
6173                                 /* Clean up the ndlp on Fabric connections */
6174                                 lpfc_drop_node(vport, ndlp);
6175
6176                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
6177                                 /* Fail outstanding IO now since device
6178                                  * is marked for PLOGI.
6179                                  */
6180                                 lpfc_unreg_rpi(vport, ndlp);
6181                         }
6182                 }
6183                 if (vport->port_state != LPFC_FLOGI) {
6184                         if (phba->sli_rev <= LPFC_SLI_REV3)
6185                                 lpfc_initial_flogi(vport);
6186                         else
6187                                 lpfc_issue_init_vfi(vport);
6188                         return;
6189                 }
6190                 break;
6191
6192         case LPFC_FDISC:
6193         case LPFC_FLOGI:
6194         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
6195                 /* Initial FLOGI timeout */
6196                 lpfc_printf_vlog(vport, KERN_ERR,
6197                                  LOG_TRACE_EVENT,
6198                                  "0222 Initial %s timeout\n",
6199                                  vport->vpi ? "FDISC" : "FLOGI");
6200
6201                 /* Assume no Fabric and go on with discovery.
6202                  * Check for outstanding ELS FLOGI to abort.
6203                  */
6204
6205                 /* FLOGI failed, so just use loop map to make discovery list */
6206                 lpfc_disc_list_loopmap(vport);
6207
6208                 /* Start discovery */
6209                 lpfc_disc_start(vport);
6210                 break;
6211
6212         case LPFC_FABRIC_CFG_LINK:
6213         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
6214            NameServer login */
6215                 lpfc_printf_vlog(vport, KERN_ERR,
6216                                  LOG_TRACE_EVENT,
6217                                  "0223 Timeout while waiting for "
6218                                  "NameServer login\n");
6219                 /* Next look for NameServer ndlp */
6220                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
6221                 if (ndlp)
6222                         lpfc_els_abort(phba, ndlp);
6223
6224                 /* ReStart discovery */
6225                 goto restart_disc;
6226
6227         case LPFC_NS_QRY:
6228         /* Check for wait for NameServer Rsp timeout */
6229                 lpfc_printf_vlog(vport, KERN_ERR,
6230                                  LOG_TRACE_EVENT,
6231                                  "0224 NameServer Query timeout "
6232                                  "Data: x%x x%x\n",
6233                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
6234
6235                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
6236                         /* Try it one more time */
6237                         vport->fc_ns_retry++;
6238                         vport->gidft_inp = 0;
6239                         rc = lpfc_issue_gidft(vport);
6240                         if (rc == 0)
6241                                 break;
6242                 }
6243                 vport->fc_ns_retry = 0;
6244
6245 restart_disc:
6246                 /*
6247                  * Discovery is over.
6248                  * set port_state to PORT_READY if SLI2.
6249                  * cmpl_reg_vpi will set port_state to READY for SLI3.
6250                  */
6251                 if (phba->sli_rev < LPFC_SLI_REV4) {
6252                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
6253                                 lpfc_issue_reg_vpi(phba, vport);
6254                         else  {
6255                                 lpfc_issue_clear_la(phba, vport);
6256                                 vport->port_state = LPFC_VPORT_READY;
6257                         }
6258                 }
6259
6260                 /* Setup and issue mailbox INITIALIZE LINK command */
6261                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6262                 if (!initlinkmbox) {
6263                         lpfc_printf_vlog(vport, KERN_ERR,
6264                                          LOG_TRACE_EVENT,
6265                                          "0206 Device Discovery "
6266                                          "completion error\n");
6267                         phba->link_state = LPFC_HBA_ERROR;
6268                         break;
6269                 }
6270
6271                 lpfc_linkdown(phba);
6272                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
6273                                phba->cfg_link_speed);
6274                 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
6275                 initlinkmbox->vport = vport;
6276                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
6277                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
6278                 lpfc_set_loopback_flag(phba);
6279                 if (rc == MBX_NOT_FINISHED)
6280                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
6281
6282                 break;
6283
6284         case LPFC_DISC_AUTH:
6285         /* Node Authentication timeout */
6286                 lpfc_printf_vlog(vport, KERN_ERR,
6287                                  LOG_TRACE_EVENT,
6288                                  "0227 Node Authentication timeout\n");
6289                 lpfc_disc_flush_list(vport);
6290
6291                 /*
6292                  * set port_state to PORT_READY if SLI2.
6293                  * cmpl_reg_vpi will set port_state to READY for SLI3.
6294                  */
6295                 if (phba->sli_rev < LPFC_SLI_REV4) {
6296                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
6297                                 lpfc_issue_reg_vpi(phba, vport);
6298                         else  { /* NPIV Not enabled */
6299                                 lpfc_issue_clear_la(phba, vport);
6300                                 vport->port_state = LPFC_VPORT_READY;
6301                         }
6302                 }
6303                 break;
6304
6305         case LPFC_VPORT_READY:
6306                 if (vport->fc_flag & FC_RSCN_MODE) {
6307                         lpfc_printf_vlog(vport, KERN_ERR,
6308                                          LOG_TRACE_EVENT,
6309                                          "0231 RSCN timeout Data: x%x "
6310                                          "x%x x%x x%x\n",
6311                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY,
6312                                          vport->port_state, vport->gidft_inp);
6313
6314                         /* Cleanup any outstanding ELS commands */
6315                         lpfc_els_flush_cmd(vport);
6316
6317                         lpfc_els_flush_rscn(vport);
6318                         lpfc_disc_flush_list(vport);
6319                 }
6320                 break;
6321
6322         default:
6323                 lpfc_printf_vlog(vport, KERN_ERR,
6324                                  LOG_TRACE_EVENT,
6325                                  "0273 Unexpected discovery timeout, "
6326                                  "vport State x%x\n", vport->port_state);
6327                 break;
6328         }
6329
6330         switch (phba->link_state) {
6331         case LPFC_CLEAR_LA:
6332                                 /* CLEAR LA timeout */
6333                 lpfc_printf_vlog(vport, KERN_ERR,
6334                                  LOG_TRACE_EVENT,
6335                                  "0228 CLEAR LA timeout\n");
6336                 clrlaerr = 1;
6337                 break;
6338
6339         case LPFC_LINK_UP:
6340                 lpfc_issue_clear_la(phba, vport);
6341                 fallthrough;
6342         case LPFC_LINK_UNKNOWN:
6343         case LPFC_WARM_START:
6344         case LPFC_INIT_START:
6345         case LPFC_INIT_MBX_CMDS:
6346         case LPFC_LINK_DOWN:
6347         case LPFC_HBA_ERROR:
6348                 lpfc_printf_vlog(vport, KERN_ERR,
6349                                  LOG_TRACE_EVENT,
6350                                  "0230 Unexpected timeout, hba link "
6351                                  "state x%x\n", phba->link_state);
6352                 clrlaerr = 1;
6353                 break;
6354
6355         case LPFC_HBA_READY:
6356                 break;
6357         }
6358
6359         if (clrlaerr) {
6360                 lpfc_disc_flush_list(vport);
6361                 if (phba->sli_rev != LPFC_SLI_REV4) {
6362                         psli->sli3_ring[(LPFC_EXTRA_RING)].flag &=
6363                                 ~LPFC_STOP_IOCB_EVENT;
6364                         psli->sli3_ring[LPFC_FCP_RING].flag &=
6365                                 ~LPFC_STOP_IOCB_EVENT;
6366                 }
6367                 vport->port_state = LPFC_VPORT_READY;
6368         }
6369         return;
6370 }
6371
6372 /*
6373  * This routine handles processing a NameServer REG_LOGIN mailbox
6374  * command upon completion. It is setup in the LPFC_MBOXQ
6375  * as the completion routine when the command is
6376  * handed off to the SLI layer.
6377  */
6378 void
6379 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
6380 {
6381         MAILBOX_t *mb = &pmb->u.mb;
6382         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
6383         struct lpfc_vport    *vport = pmb->vport;
6384
6385         pmb->ctx_ndlp = NULL;
6386
6387         if (phba->sli_rev < LPFC_SLI_REV4)
6388                 ndlp->nlp_rpi = mb->un.varWords[0];
6389         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
6390         ndlp->nlp_type |= NLP_FABRIC;
6391         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
6392         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
6393                          "0004 rpi:%x DID:%x flg:%x %d x%px\n",
6394                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
6395                          kref_read(&ndlp->kref),
6396                          ndlp);
6397         /*
6398          * Start issuing Fabric-Device Management Interface (FDMI) command to
6399          * 0xfffffa (FDMI well known port).
6400          * DHBA -> DPRT -> RHBA -> RPA  (physical port)
6401          * DPRT -> RPRT (vports)
6402          */
6403         if (vport->port_type == LPFC_PHYSICAL_PORT) {
6404                 phba->link_flag &= ~LS_CT_VEN_RPA; /* For extra Vendor RPA */
6405                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA, 0);
6406         } else {
6407                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DPRT, 0);
6408         }
6409
6410
6411         /* decrement the node reference count held for this callback
6412          * function.
6413          */
6414         lpfc_nlp_put(ndlp);
6415         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
6416         return;
6417 }
6418
6419 static int
6420 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
6421 {
6422         uint16_t *rpi = param;
6423
6424         return ndlp->nlp_rpi == *rpi;
6425 }
6426
6427 static int
6428 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
6429 {
6430         return memcmp(&ndlp->nlp_portname, param,
6431                       sizeof(ndlp->nlp_portname)) == 0;
6432 }
6433
6434 static struct lpfc_nodelist *
6435 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
6436 {
6437         struct lpfc_nodelist *ndlp;
6438
6439         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
6440                 if (filter(ndlp, param)) {
6441                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6442                                          "3185 FIND node filter %ps DID "
6443                                          "ndlp x%px did x%x flg x%x st x%x "
6444                                          "xri x%x type x%x rpi x%x\n",
6445                                          filter, ndlp, ndlp->nlp_DID,
6446                                          ndlp->nlp_flag, ndlp->nlp_state,
6447                                          ndlp->nlp_xri, ndlp->nlp_type,
6448                                          ndlp->nlp_rpi);
6449                         return ndlp;
6450                 }
6451         }
6452         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6453                          "3186 FIND node filter %ps NOT FOUND.\n", filter);
6454         return NULL;
6455 }
6456
6457 /*
6458  * This routine looks up the ndlp lists for the given RPI. If rpi found it
6459  * returns the node list element pointer else return NULL.
6460  */
6461 struct lpfc_nodelist *
6462 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6463 {
6464         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
6465 }
6466
6467 /*
6468  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
6469  * returns the node element list pointer else return NULL.
6470  */
6471 struct lpfc_nodelist *
6472 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
6473 {
6474         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6475         struct lpfc_nodelist *ndlp;
6476
6477         spin_lock_irq(shost->host_lock);
6478         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
6479         spin_unlock_irq(shost->host_lock);
6480         return ndlp;
6481 }
6482
6483 /*
6484  * This routine looks up the ndlp lists for the given RPI. If the rpi
6485  * is found, the routine returns the node element list pointer else
6486  * return NULL.
6487  */
6488 struct lpfc_nodelist *
6489 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6490 {
6491         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6492         struct lpfc_nodelist *ndlp;
6493         unsigned long flags;
6494
6495         spin_lock_irqsave(shost->host_lock, flags);
6496         ndlp = __lpfc_findnode_rpi(vport, rpi);
6497         spin_unlock_irqrestore(shost->host_lock, flags);
6498         return ndlp;
6499 }
6500
6501 /**
6502  * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
6503  * @phba: pointer to lpfc hba data structure.
6504  * @vpi: the physical host virtual N_Port identifier.
6505  *
6506  * This routine finds a vport on a HBA (referred by @phba) through a
6507  * @vpi. The function walks the HBA's vport list and returns the address
6508  * of the vport with the matching @vpi.
6509  *
6510  * Return code
6511  *    NULL - No vport with the matching @vpi found
6512  *    Otherwise - Address to the vport with the matching @vpi.
6513  **/
6514 struct lpfc_vport *
6515 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
6516 {
6517         struct lpfc_vport *vport;
6518         unsigned long flags;
6519         int i = 0;
6520
6521         /* The physical ports are always vpi 0 - translate is unnecessary. */
6522         if (vpi > 0) {
6523                 /*
6524                  * Translate the physical vpi to the logical vpi.  The
6525                  * vport stores the logical vpi.
6526                  */
6527                 for (i = 0; i <= phba->max_vpi; i++) {
6528                         if (vpi == phba->vpi_ids[i])
6529                                 break;
6530                 }
6531
6532                 if (i > phba->max_vpi) {
6533                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6534                                         "2936 Could not find Vport mapped "
6535                                         "to vpi %d\n", vpi);
6536                         return NULL;
6537                 }
6538         }
6539
6540         spin_lock_irqsave(&phba->port_list_lock, flags);
6541         list_for_each_entry(vport, &phba->port_list, listentry) {
6542                 if (vport->vpi == i) {
6543                         spin_unlock_irqrestore(&phba->port_list_lock, flags);
6544                         return vport;
6545                 }
6546         }
6547         spin_unlock_irqrestore(&phba->port_list_lock, flags);
6548         return NULL;
6549 }
6550
6551 struct lpfc_nodelist *
6552 lpfc_nlp_init(struct lpfc_vport *vport, uint32_t did)
6553 {
6554         struct lpfc_nodelist *ndlp;
6555         int rpi = LPFC_RPI_ALLOC_ERROR;
6556
6557         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6558                 rpi = lpfc_sli4_alloc_rpi(vport->phba);
6559                 if (rpi == LPFC_RPI_ALLOC_ERROR)
6560                         return NULL;
6561         }
6562
6563         ndlp = mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
6564         if (!ndlp) {
6565                 if (vport->phba->sli_rev == LPFC_SLI_REV4)
6566                         lpfc_sli4_free_rpi(vport->phba, rpi);
6567                 return NULL;
6568         }
6569
6570         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
6571
6572         spin_lock_init(&ndlp->lock);
6573
6574         lpfc_initialize_node(vport, ndlp, did);
6575         INIT_LIST_HEAD(&ndlp->nlp_listp);
6576         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6577                 ndlp->nlp_rpi = rpi;
6578                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
6579                                  "0007 Init New ndlp x%px, rpi:x%x DID:%x "
6580                                  "flg:x%x refcnt:%d\n",
6581                                  ndlp, ndlp->nlp_rpi, ndlp->nlp_DID,
6582                                  ndlp->nlp_flag, kref_read(&ndlp->kref));
6583
6584                 ndlp->active_rrqs_xri_bitmap =
6585                                 mempool_alloc(vport->phba->active_rrq_pool,
6586                                               GFP_KERNEL);
6587                 if (ndlp->active_rrqs_xri_bitmap)
6588                         memset(ndlp->active_rrqs_xri_bitmap, 0,
6589                                ndlp->phba->cfg_rrq_xri_bitmap_sz);
6590         }
6591
6592
6593
6594         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
6595                 "node init:       did:x%x",
6596                 ndlp->nlp_DID, 0, 0);
6597
6598         return ndlp;
6599 }
6600
6601 /* This routine releases all resources associated with a specifc NPort's ndlp
6602  * and mempool_free's the nodelist.
6603  */
6604 static void
6605 lpfc_nlp_release(struct kref *kref)
6606 {
6607         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
6608                                                   kref);
6609         struct lpfc_vport *vport = ndlp->vport;
6610
6611         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6612                 "node release:    did:x%x flg:x%x type:x%x",
6613                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
6614
6615         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6616                          "0279 %s: ndlp: x%px did %x refcnt:%d rpi:%x\n",
6617                          __func__, ndlp, ndlp->nlp_DID,
6618                          kref_read(&ndlp->kref), ndlp->nlp_rpi);
6619
6620         /* remove ndlp from action. */
6621         lpfc_cancel_retry_delay_tmo(vport, ndlp);
6622         lpfc_cleanup_node(vport, ndlp);
6623
6624         /* Not all ELS transactions have registered the RPI with the port.
6625          * In these cases the rpi usage is temporary and the node is
6626          * released when the WQE is completed.  Catch this case to free the
6627          * RPI to the pool.  Because this node is in the release path, a lock
6628          * is unnecessary.  All references are gone and the node has been
6629          * dequeued.
6630          */
6631         if (ndlp->nlp_flag & NLP_RELEASE_RPI) {
6632                 if (ndlp->nlp_rpi != LPFC_RPI_ALLOC_ERROR &&
6633                     !(ndlp->nlp_flag & (NLP_RPI_REGISTERED | NLP_UNREG_INP))) {
6634                         lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi);
6635                         ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
6636                 }
6637         }
6638
6639         /* The node is not freed back to memory, it is released to a pool so
6640          * the node fields need to be cleaned up.
6641          */
6642         ndlp->vport = NULL;
6643         ndlp->nlp_state = NLP_STE_FREED_NODE;
6644         ndlp->nlp_flag = 0;
6645         ndlp->fc4_xpt_flags = 0;
6646
6647         /* free ndlp memory for final ndlp release */
6648         if (ndlp->phba->sli_rev == LPFC_SLI_REV4)
6649                 mempool_free(ndlp->active_rrqs_xri_bitmap,
6650                                 ndlp->phba->active_rrq_pool);
6651         mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
6652 }
6653
6654 /* This routine bumps the reference count for a ndlp structure to ensure
6655  * that one discovery thread won't free a ndlp while another discovery thread
6656  * is using it.
6657  */
6658 struct lpfc_nodelist *
6659 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
6660 {
6661         unsigned long flags;
6662
6663         if (ndlp) {
6664                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6665                         "node get:        did:x%x flg:x%x refcnt:x%x",
6666                         ndlp->nlp_DID, ndlp->nlp_flag,
6667                         kref_read(&ndlp->kref));
6668
6669                 /* The check of ndlp usage to prevent incrementing the
6670                  * ndlp reference count that is in the process of being
6671                  * released.
6672                  */
6673                 spin_lock_irqsave(&ndlp->lock, flags);
6674                 if (!kref_get_unless_zero(&ndlp->kref)) {
6675                         spin_unlock_irqrestore(&ndlp->lock, flags);
6676                         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
6677                                 "0276 %s: ndlp:x%px refcnt:%d\n",
6678                                 __func__, (void *)ndlp, kref_read(&ndlp->kref));
6679                         return NULL;
6680                 }
6681                 spin_unlock_irqrestore(&ndlp->lock, flags);
6682         } else {
6683                 WARN_ONCE(!ndlp, "**** %s, get ref on NULL ndlp!", __func__);
6684         }
6685
6686         return ndlp;
6687 }
6688
6689 /* This routine decrements the reference count for a ndlp structure. If the
6690  * count goes to 0, this indicates the associated nodelist should be freed.
6691  */
6692 int
6693 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
6694 {
6695         if (ndlp) {
6696                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6697                                 "node put:        did:x%x flg:x%x refcnt:x%x",
6698                                 ndlp->nlp_DID, ndlp->nlp_flag,
6699                                 kref_read(&ndlp->kref));
6700         } else {
6701                 WARN_ONCE(!ndlp, "**** %s, put ref on NULL ndlp!", __func__);
6702         }
6703
6704         return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0;
6705 }
6706
6707 /* This routine free's the specified nodelist if it is not in use
6708  * by any other discovery thread. This routine returns 1 if the
6709  * ndlp has been freed. A return value of 0 indicates the ndlp is
6710  * not yet been released.
6711  */
6712 int
6713 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
6714 {
6715         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6716                 "node not used:   did:x%x flg:x%x refcnt:x%x",
6717                 ndlp->nlp_DID, ndlp->nlp_flag,
6718                 kref_read(&ndlp->kref));
6719
6720         if (kref_read(&ndlp->kref) == 1)
6721                 if (lpfc_nlp_put(ndlp))
6722                         return 1;
6723         return 0;
6724 }
6725
6726 /**
6727  * lpfc_fcf_inuse - Check if FCF can be unregistered.
6728  * @phba: Pointer to hba context object.
6729  *
6730  * This function iterate through all FC nodes associated
6731  * will all vports to check if there is any node with
6732  * fc_rports associated with it. If there is an fc_rport
6733  * associated with the node, then the node is either in
6734  * discovered state or its devloss_timer is pending.
6735  */
6736 static int
6737 lpfc_fcf_inuse(struct lpfc_hba *phba)
6738 {
6739         struct lpfc_vport **vports;
6740         int i, ret = 0;
6741         struct lpfc_nodelist *ndlp;
6742         struct Scsi_Host  *shost;
6743
6744         vports = lpfc_create_vport_work_array(phba);
6745
6746         /* If driver cannot allocate memory, indicate fcf is in use */
6747         if (!vports)
6748                 return 1;
6749
6750         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6751                 shost = lpfc_shost_from_vport(vports[i]);
6752                 spin_lock_irq(shost->host_lock);
6753                 /*
6754                  * IF the CVL_RCVD bit is not set then we have sent the
6755                  * flogi.
6756                  * If dev_loss fires while we are waiting we do not want to
6757                  * unreg the fcf.
6758                  */
6759                 if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) {
6760                         spin_unlock_irq(shost->host_lock);
6761                         ret =  1;
6762                         goto out;
6763                 }
6764                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
6765                         if (ndlp->rport &&
6766                           (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
6767                                 ret = 1;
6768                                 spin_unlock_irq(shost->host_lock);
6769                                 goto out;
6770                         } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
6771                                 ret = 1;
6772                                 lpfc_printf_log(phba, KERN_INFO,
6773                                                 LOG_NODE | LOG_DISCOVERY,
6774                                                 "2624 RPI %x DID %x flag %x "
6775                                                 "still logged in\n",
6776                                                 ndlp->nlp_rpi, ndlp->nlp_DID,
6777                                                 ndlp->nlp_flag);
6778                         }
6779                 }
6780                 spin_unlock_irq(shost->host_lock);
6781         }
6782 out:
6783         lpfc_destroy_vport_work_array(phba, vports);
6784         return ret;
6785 }
6786
6787 /**
6788  * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
6789  * @phba: Pointer to hba context object.
6790  * @mboxq: Pointer to mailbox object.
6791  *
6792  * This function frees memory associated with the mailbox command.
6793  */
6794 void
6795 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6796 {
6797         struct lpfc_vport *vport = mboxq->vport;
6798         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6799
6800         if (mboxq->u.mb.mbxStatus) {
6801                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6802                                 "2555 UNREG_VFI mbxStatus error x%x "
6803                                 "HBA state x%x\n",
6804                                 mboxq->u.mb.mbxStatus, vport->port_state);
6805         }
6806         spin_lock_irq(shost->host_lock);
6807         phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
6808         spin_unlock_irq(shost->host_lock);
6809         mempool_free(mboxq, phba->mbox_mem_pool);
6810         return;
6811 }
6812
6813 /**
6814  * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
6815  * @phba: Pointer to hba context object.
6816  * @mboxq: Pointer to mailbox object.
6817  *
6818  * This function frees memory associated with the mailbox command.
6819  */
6820 static void
6821 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6822 {
6823         struct lpfc_vport *vport = mboxq->vport;
6824
6825         if (mboxq->u.mb.mbxStatus) {
6826                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6827                                 "2550 UNREG_FCFI mbxStatus error x%x "
6828                                 "HBA state x%x\n",
6829                                 mboxq->u.mb.mbxStatus, vport->port_state);
6830         }
6831         mempool_free(mboxq, phba->mbox_mem_pool);
6832         return;
6833 }
6834
6835 /**
6836  * lpfc_unregister_fcf_prep - Unregister fcf record preparation
6837  * @phba: Pointer to hba context object.
6838  *
6839  * This function prepare the HBA for unregistering the currently registered
6840  * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
6841  * VFIs.
6842  */
6843 int
6844 lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
6845 {
6846         struct lpfc_vport **vports;
6847         struct lpfc_nodelist *ndlp;
6848         struct Scsi_Host *shost;
6849         int i = 0, rc;
6850
6851         /* Unregister RPIs */
6852         if (lpfc_fcf_inuse(phba))
6853                 lpfc_unreg_hba_rpis(phba);
6854
6855         /* At this point, all discovery is aborted */
6856         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
6857
6858         /* Unregister VPIs */
6859         vports = lpfc_create_vport_work_array(phba);
6860         if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
6861                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6862                         /* Stop FLOGI/FDISC retries */
6863                         ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
6864                         if (ndlp)
6865                                 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
6866                         lpfc_cleanup_pending_mbox(vports[i]);
6867                         if (phba->sli_rev == LPFC_SLI_REV4)
6868                                 lpfc_sli4_unreg_all_rpis(vports[i]);
6869                         lpfc_mbx_unreg_vpi(vports[i]);
6870                         shost = lpfc_shost_from_vport(vports[i]);
6871                         spin_lock_irq(shost->host_lock);
6872                         vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6873                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
6874                         spin_unlock_irq(shost->host_lock);
6875                 }
6876         lpfc_destroy_vport_work_array(phba, vports);
6877         if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) {
6878                 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
6879                 if (ndlp)
6880                         lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
6881                 lpfc_cleanup_pending_mbox(phba->pport);
6882                 if (phba->sli_rev == LPFC_SLI_REV4)
6883                         lpfc_sli4_unreg_all_rpis(phba->pport);
6884                 lpfc_mbx_unreg_vpi(phba->pport);
6885                 shost = lpfc_shost_from_vport(phba->pport);
6886                 spin_lock_irq(shost->host_lock);
6887                 phba->pport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6888                 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED;
6889                 spin_unlock_irq(shost->host_lock);
6890         }
6891
6892         /* Cleanup any outstanding ELS commands */
6893         lpfc_els_flush_all_cmd(phba);
6894
6895         /* Unregister the physical port VFI */
6896         rc = lpfc_issue_unreg_vfi(phba->pport);
6897         return rc;
6898 }
6899
6900 /**
6901  * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
6902  * @phba: Pointer to hba context object.
6903  *
6904  * This function issues synchronous unregister FCF mailbox command to HBA to
6905  * unregister the currently registered FCF record. The driver does not reset
6906  * the driver FCF usage state flags.
6907  *
6908  * Return 0 if successfully issued, none-zero otherwise.
6909  */
6910 int
6911 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
6912 {
6913         LPFC_MBOXQ_t *mbox;
6914         int rc;
6915
6916         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6917         if (!mbox) {
6918                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6919                                 "2551 UNREG_FCFI mbox allocation failed"
6920                                 "HBA state x%x\n", phba->pport->port_state);
6921                 return -ENOMEM;
6922         }
6923         lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
6924         mbox->vport = phba->pport;
6925         mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
6926         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
6927
6928         if (rc == MBX_NOT_FINISHED) {
6929                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6930                                 "2552 Unregister FCFI command failed rc x%x "
6931                                 "HBA state x%x\n",
6932                                 rc, phba->pport->port_state);
6933                 return -EINVAL;
6934         }
6935         return 0;
6936 }
6937
6938 /**
6939  * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
6940  * @phba: Pointer to hba context object.
6941  *
6942  * This function unregisters the currently reigstered FCF. This function
6943  * also tries to find another FCF for discovery by rescan the HBA FCF table.
6944  */
6945 void
6946 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
6947 {
6948         int rc;
6949
6950         /* Preparation for unregistering fcf */
6951         rc = lpfc_unregister_fcf_prep(phba);
6952         if (rc) {
6953                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6954                                 "2748 Failed to prepare for unregistering "
6955                                 "HBA's FCF record: rc=%d\n", rc);
6956                 return;
6957         }
6958
6959         /* Now, unregister FCF record and reset HBA FCF state */
6960         rc = lpfc_sli4_unregister_fcf(phba);
6961         if (rc)
6962                 return;
6963         /* Reset HBA FCF states after successful unregister FCF */
6964         phba->fcf.fcf_flag = 0;
6965         phba->fcf.current_rec.flag = 0;
6966
6967         /*
6968          * If driver is not unloading, check if there is any other
6969          * FCF record that can be used for discovery.
6970          */
6971         if ((phba->pport->load_flag & FC_UNLOADING) ||
6972             (phba->link_state < LPFC_LINK_UP))
6973                 return;
6974
6975         /* This is considered as the initial FCF discovery scan */
6976         spin_lock_irq(&phba->hbalock);
6977         phba->fcf.fcf_flag |= FCF_INIT_DISC;
6978         spin_unlock_irq(&phba->hbalock);
6979
6980         /* Reset FCF roundrobin bmask for new discovery */
6981         lpfc_sli4_clear_fcf_rr_bmask(phba);
6982
6983         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
6984
6985         if (rc) {
6986                 spin_lock_irq(&phba->hbalock);
6987                 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
6988                 spin_unlock_irq(&phba->hbalock);
6989                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6990                                 "2553 lpfc_unregister_unused_fcf failed "
6991                                 "to read FCF record HBA state x%x\n",
6992                                 phba->pport->port_state);
6993         }
6994 }
6995
6996 /**
6997  * lpfc_unregister_fcf - Unregister the currently registered fcf record
6998  * @phba: Pointer to hba context object.
6999  *
7000  * This function just unregisters the currently reigstered FCF. It does not
7001  * try to find another FCF for discovery.
7002  */
7003 void
7004 lpfc_unregister_fcf(struct lpfc_hba *phba)
7005 {
7006         int rc;
7007
7008         /* Preparation for unregistering fcf */
7009         rc = lpfc_unregister_fcf_prep(phba);
7010         if (rc) {
7011                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7012                                 "2749 Failed to prepare for unregistering "
7013                                 "HBA's FCF record: rc=%d\n", rc);
7014                 return;
7015         }
7016
7017         /* Now, unregister FCF record and reset HBA FCF state */
7018         rc = lpfc_sli4_unregister_fcf(phba);
7019         if (rc)
7020                 return;
7021         /* Set proper HBA FCF states after successful unregister FCF */
7022         spin_lock_irq(&phba->hbalock);
7023         phba->fcf.fcf_flag &= ~FCF_REGISTERED;
7024         spin_unlock_irq(&phba->hbalock);
7025 }
7026
7027 /**
7028  * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
7029  * @phba: Pointer to hba context object.
7030  *
7031  * This function check if there are any connected remote port for the FCF and
7032  * if all the devices are disconnected, this function unregister FCFI.
7033  * This function also tries to use another FCF for discovery.
7034  */
7035 void
7036 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
7037 {
7038         /*
7039          * If HBA is not running in FIP mode, if HBA does not support
7040          * FCoE, if FCF discovery is ongoing, or if FCF has not been
7041          * registered, do nothing.
7042          */
7043         spin_lock_irq(&phba->hbalock);
7044         if (!(phba->hba_flag & HBA_FCOE_MODE) ||
7045             !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
7046             !(phba->hba_flag & HBA_FIP_SUPPORT) ||
7047             (phba->fcf.fcf_flag & FCF_DISCOVERY) ||
7048             (phba->pport->port_state == LPFC_FLOGI)) {
7049                 spin_unlock_irq(&phba->hbalock);
7050                 return;
7051         }
7052         spin_unlock_irq(&phba->hbalock);
7053
7054         if (lpfc_fcf_inuse(phba))
7055                 return;
7056
7057         lpfc_unregister_fcf_rescan(phba);
7058 }
7059
7060 /**
7061  * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
7062  * @phba: Pointer to hba context object.
7063  * @buff: Buffer containing the FCF connection table as in the config
7064  *         region.
7065  * This function create driver data structure for the FCF connection
7066  * record table read from config region 23.
7067  */
7068 static void
7069 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
7070         uint8_t *buff)
7071 {
7072         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
7073         struct lpfc_fcf_conn_hdr *conn_hdr;
7074         struct lpfc_fcf_conn_rec *conn_rec;
7075         uint32_t record_count;
7076         int i;
7077
7078         /* Free the current connect table */
7079         list_for_each_entry_safe(conn_entry, next_conn_entry,
7080                 &phba->fcf_conn_rec_list, list) {
7081                 list_del_init(&conn_entry->list);
7082                 kfree(conn_entry);
7083         }
7084
7085         conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
7086         record_count = conn_hdr->length * sizeof(uint32_t)/
7087                 sizeof(struct lpfc_fcf_conn_rec);
7088
7089         conn_rec = (struct lpfc_fcf_conn_rec *)
7090                 (buff + sizeof(struct lpfc_fcf_conn_hdr));
7091
7092         for (i = 0; i < record_count; i++) {
7093                 if (!(conn_rec[i].flags & FCFCNCT_VALID))
7094                         continue;
7095                 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
7096                         GFP_KERNEL);
7097                 if (!conn_entry) {
7098                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7099                                         "2566 Failed to allocate connection"
7100                                         " table entry\n");
7101                         return;
7102                 }
7103
7104                 memcpy(&conn_entry->conn_rec, &conn_rec[i],
7105                         sizeof(struct lpfc_fcf_conn_rec));
7106                 list_add_tail(&conn_entry->list,
7107                         &phba->fcf_conn_rec_list);
7108         }
7109
7110         if (!list_empty(&phba->fcf_conn_rec_list)) {
7111                 i = 0;
7112                 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list,
7113                                     list) {
7114                         conn_rec = &conn_entry->conn_rec;
7115                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7116                                         "3345 FCF connection list rec[%02d]: "
7117                                         "flags:x%04x, vtag:x%04x, "
7118                                         "fabric_name:x%02x:%02x:%02x:%02x:"
7119                                         "%02x:%02x:%02x:%02x, "
7120                                         "switch_name:x%02x:%02x:%02x:%02x:"
7121                                         "%02x:%02x:%02x:%02x\n", i++,
7122                                         conn_rec->flags, conn_rec->vlan_tag,
7123                                         conn_rec->fabric_name[0],
7124                                         conn_rec->fabric_name[1],
7125                                         conn_rec->fabric_name[2],
7126                                         conn_rec->fabric_name[3],
7127                                         conn_rec->fabric_name[4],
7128                                         conn_rec->fabric_name[5],
7129                                         conn_rec->fabric_name[6],
7130                                         conn_rec->fabric_name[7],
7131                                         conn_rec->switch_name[0],
7132                                         conn_rec->switch_name[1],
7133                                         conn_rec->switch_name[2],
7134                                         conn_rec->switch_name[3],
7135                                         conn_rec->switch_name[4],
7136                                         conn_rec->switch_name[5],
7137                                         conn_rec->switch_name[6],
7138                                         conn_rec->switch_name[7]);
7139                 }
7140         }
7141 }
7142
7143 /**
7144  * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
7145  * @phba: Pointer to hba context object.
7146  * @buff: Buffer containing the FCoE parameter data structure.
7147  *
7148  *  This function update driver data structure with config
7149  *  parameters read from config region 23.
7150  */
7151 static void
7152 lpfc_read_fcoe_param(struct lpfc_hba *phba,
7153                         uint8_t *buff)
7154 {
7155         struct lpfc_fip_param_hdr *fcoe_param_hdr;
7156         struct lpfc_fcoe_params *fcoe_param;
7157
7158         fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
7159                 buff;
7160         fcoe_param = (struct lpfc_fcoe_params *)
7161                 (buff + sizeof(struct lpfc_fip_param_hdr));
7162
7163         if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
7164                 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
7165                 return;
7166
7167         if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
7168                 phba->valid_vlan = 1;
7169                 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
7170                         0xFFF;
7171         }
7172
7173         phba->fc_map[0] = fcoe_param->fc_map[0];
7174         phba->fc_map[1] = fcoe_param->fc_map[1];
7175         phba->fc_map[2] = fcoe_param->fc_map[2];
7176         return;
7177 }
7178
7179 /**
7180  * lpfc_get_rec_conf23 - Get a record type in config region data.
7181  * @buff: Buffer containing config region 23 data.
7182  * @size: Size of the data buffer.
7183  * @rec_type: Record type to be searched.
7184  *
7185  * This function searches config region data to find the beginning
7186  * of the record specified by record_type. If record found, this
7187  * function return pointer to the record else return NULL.
7188  */
7189 static uint8_t *
7190 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
7191 {
7192         uint32_t offset = 0, rec_length;
7193
7194         if ((buff[0] == LPFC_REGION23_LAST_REC) ||
7195                 (size < sizeof(uint32_t)))
7196                 return NULL;
7197
7198         rec_length = buff[offset + 1];
7199
7200         /*
7201          * One TLV record has one word header and number of data words
7202          * specified in the rec_length field of the record header.
7203          */
7204         while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
7205                 <= size) {
7206                 if (buff[offset] == rec_type)
7207                         return &buff[offset];
7208
7209                 if (buff[offset] == LPFC_REGION23_LAST_REC)
7210                         return NULL;
7211
7212                 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
7213                 rec_length = buff[offset + 1];
7214         }
7215         return NULL;
7216 }
7217
7218 /**
7219  * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
7220  * @phba: Pointer to lpfc_hba data structure.
7221  * @buff: Buffer containing config region 23 data.
7222  * @size: Size of the data buffer.
7223  *
7224  * This function parses the FCoE config parameters in config region 23 and
7225  * populate driver data structure with the parameters.
7226  */
7227 void
7228 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
7229                 uint8_t *buff,
7230                 uint32_t size)
7231 {
7232         uint32_t offset = 0;
7233         uint8_t *rec_ptr;
7234
7235         /*
7236          * If data size is less than 2 words signature and version cannot be
7237          * verified.
7238          */
7239         if (size < 2*sizeof(uint32_t))
7240                 return;
7241
7242         /* Check the region signature first */
7243         if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
7244                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7245                         "2567 Config region 23 has bad signature\n");
7246                 return;
7247         }
7248
7249         offset += 4;
7250
7251         /* Check the data structure version */
7252         if (buff[offset] != LPFC_REGION23_VERSION) {
7253                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7254                                 "2568 Config region 23 has bad version\n");
7255                 return;
7256         }
7257         offset += 4;
7258
7259         /* Read FCoE param record */
7260         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
7261                         size - offset, FCOE_PARAM_TYPE);
7262         if (rec_ptr)
7263                 lpfc_read_fcoe_param(phba, rec_ptr);
7264
7265         /* Read FCF connection table */
7266         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
7267                 size - offset, FCOE_CONN_TBL_TYPE);
7268         if (rec_ptr)
7269                 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
7270
7271 }