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 %u 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         if (vport->load_flag & FC_UNLOADING) {
 179                 spin_lock_irqsave(&ndlp->lock, iflags);
 180                 ndlp->rport = NULL;
 181
 182                 /* The scsi_transport is done with the rport so lpfc cannot
 183                  * call to unregister. Remove the scsi transport reference
 184                  * and clean up the SCSI transport node details.
 185                  */
 186                 if (ndlp->fc4_xpt_flags & (NLP_XPT_REGD | SCSI_XPT_REGD)) {
 187                         ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD;
 188
 189                         /* NVME transport-registered rports need the
 190                          * NLP_XPT_REGD flag to complete an unregister.
 191                          */
 192                         if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD))
 193                                 ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD;
 194                         spin_unlock_irqrestore(&ndlp->lock, iflags);
 195                         lpfc_nlp_put(ndlp);
 196                         spin_lock_irqsave(&ndlp->lock, iflags);
 197                 }
 198
 199                 /* Only 1 thread can drop the initial node reference.  If
 200                  * another thread has set NLP_DROPPED, this thread is done.
 201                  */
 202                 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD) &&
 203                     !(ndlp->nlp_flag & NLP_DROPPED)) {
 204                         ndlp->nlp_flag |= NLP_DROPPED;
 205                         spin_unlock_irqrestore(&ndlp->lock, iflags);
 206                         lpfc_nlp_put(ndlp);
 207                         return;
 208                 }
 209
 210                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 211                 return;
 212         }
 213
 214         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 215                 return;
 216
 217         if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn))
 218                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 219                                  "6789 rport name %llx != node port name %llx",
 220                                  rport->port_name,
 221                                  wwn_to_u64(ndlp->nlp_portname.u.wwn));
 222
 223         evtp = &ndlp->dev_loss_evt;
 224
 225         if (!list_empty(&evtp->evt_listp)) {
 226                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 227                                  "6790 rport name %llx dev_loss_evt pending\n",
 228                                  rport->port_name);
 229                 return;
 230         }
 231
 232         spin_lock_irqsave(&ndlp->lock, iflags);
 233         ndlp->nlp_flag |= NLP_IN_DEV_LOSS;
 234
 235         /* If there is a PLOGI in progress, and we are in a
 236          * NLP_NPR_2B_DISC state, don't turn off the flag.
 237          */
 238         if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE)
 239                 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 240
 241         /*
 242          * The backend does not expect any more calls associated with this
 243          * rport. Remove the association between rport and ndlp.
 244          */
 245         ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD;
 246         ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL;
 247         ndlp->rport = NULL;
 248         spin_unlock_irqrestore(&ndlp->lock, iflags);
 249
 250         if (phba->worker_thread) {
 251                 /* We need to hold the node by incrementing the reference
 252                  * count until this queued work is done
 253                  */
 254                 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
 255
 256                 spin_lock_irqsave(&phba->hbalock, iflags);
 257                 if (evtp->evt_arg1) {
 258                         evtp->evt = LPFC_EVT_DEV_LOSS;
 259                         list_add_tail(&evtp->evt_listp, &phba->work_list);
 260                         lpfc_worker_wake_up(phba);
 261                 }
 262                 spin_unlock_irqrestore(&phba->hbalock, iflags);
 263         } else {
 264                 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 265                                  "3188 worker thread is stopped %s x%06x, "
 266                                  " rport x%px flg x%x load_flag x%x refcnt "
 267                                  "%d\n", __func__, ndlp->nlp_DID,
 268                                  ndlp->rport, ndlp->nlp_flag,
 269                                  vport->load_flag, kref_read(&ndlp->kref));
 270                 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) {
 271                         spin_lock_irqsave(&ndlp->lock, iflags);
 272                         /* Node is in dev loss.  No further transaction. */
 273                         ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
 274                         spin_unlock_irqrestore(&ndlp->lock, iflags);
 275                         lpfc_disc_state_machine(vport, ndlp, NULL,
 276                                                 NLP_EVT_DEVICE_RM);
 277                 }
 278
 279         }
 280
 281         return;
 282 }
 283
 284 /**
 285  * lpfc_check_inactive_vmid_one - VMID inactivity checker for a vport
 286  * @vport: Pointer to vport context object.
 287  *
 288  * This function checks for idle VMID entries related to a particular vport. If
 289  * found unused/idle, free them accordingly.
 290  **/
 291 static void lpfc_check_inactive_vmid_one(struct lpfc_vport *vport)
 292 {
 293         u16 keep;
 294         u32 difftime = 0, r, bucket;
 295         u64 *lta;
 296         int cpu;
 297         struct lpfc_vmid *vmp;
 298
 299         write_lock(&vport->vmid_lock);
 300
 301         if (!vport->cur_vmid_cnt)
 302                 goto out;
 303
 304         /* iterate through the table */
 305         hash_for_each(vport->hash_table, bucket, vmp, hnode) {
 306                 keep = 0;
 307                 if (vmp->flag & LPFC_VMID_REGISTERED) {
 308                         /* check if the particular VMID is in use */
 309                         /* for all available per cpu variable */
 310                         for_each_possible_cpu(cpu) {
 311                                 /* if last access time is less than timeout */
 312                                 lta = per_cpu_ptr(vmp->last_io_time, cpu);
 313                                 if (!lta)
 314                                         continue;
 315                                 difftime = (jiffies) - (*lta);
 316                                 if ((vport->vmid_inactivity_timeout *
 317                                      JIFFIES_PER_HR) > difftime) {
 318                                         keep = 1;
 319                                         break;
 320                                 }
 321                         }
 322
 323                         /* if none of the cpus have been used by the vm, */
 324                         /*  remove the entry if already registered */
 325                         if (!keep) {
 326                                 /* mark the entry for deregistration */
 327                                 vmp->flag = LPFC_VMID_DE_REGISTER;
 328                                 write_unlock(&vport->vmid_lock);
 329                                 if (vport->vmid_priority_tagging)
 330                                         r = lpfc_vmid_uvem(vport, vmp, false);
 331                                 else
 332                                         r = lpfc_vmid_cmd(vport,
 333                                                           SLI_CTAS_DAPP_IDENT,
 334                                                           vmp);
 335
 336                                 /* decrement number of active vms and mark */
 337                                 /* entry in slot as free */
 338                                 write_lock(&vport->vmid_lock);
 339                                 if (!r) {
 340                                         struct lpfc_vmid *ht = vmp;
 341
 342                                         vport->cur_vmid_cnt--;
 343                                         ht->flag = LPFC_VMID_SLOT_FREE;
 344                                         free_percpu(ht->last_io_time);
 345                                         ht->last_io_time = NULL;
 346                                         hash_del(&ht->hnode);
 347                                 }
 348                         }
 349                 }
 350         }
 351  out:
 352         write_unlock(&vport->vmid_lock);
 353 }
 354
 355 /**
 356  * lpfc_check_inactive_vmid - VMID inactivity checker
 357  * @phba: Pointer to hba context object.
 358  *
 359  * This function is called from the worker thread to determine if an entry in
 360  * the VMID table can be released since there was no I/O activity seen from that
 361  * particular VM for the specified time. When this happens, the entry in the
 362  * table is released and also the resources on the switch cleared.
 363  **/
 364
 365 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba)
 366 {
 367         struct lpfc_vport *vport;
 368         struct lpfc_vport **vports;
 369         int i;
 370
 371         vports = lpfc_create_vport_work_array(phba);
 372         if (!vports)
 373                 return;
 374
 375         for (i = 0; i <= phba->max_vports; i++) {
 376                 if ((!vports[i]) && (i == 0))
 377                         vport = phba->pport;
 378                 else
 379                         vport = vports[i];
 380                 if (!vport)
 381                         break;
 382
 383                 lpfc_check_inactive_vmid_one(vport);
 384         }
 385         lpfc_destroy_vport_work_array(phba, vports);
 386 }
 387
 388 /**
 389  * lpfc_check_nlp_post_devloss - Check to restore ndlp refcnt after devloss
 390  * @vport: Pointer to vport object.
 391  * @ndlp: Pointer to remote node object.
 392  *
 393  * If NLP_IN_RECOV_POST_DEV_LOSS flag was set due to outstanding recovery of
 394  * node during dev_loss_tmo processing, then this function restores the nlp_put
 395  * kref decrement from lpfc_dev_loss_tmo_handler.
 396  **/
 397 void
 398 lpfc_check_nlp_post_devloss(struct lpfc_vport *vport,
 399                             struct lpfc_nodelist *ndlp)
 400 {
 401         unsigned long iflags;
 402
 403         spin_lock_irqsave(&ndlp->lock, iflags);
 404         if (ndlp->save_flags & NLP_IN_RECOV_POST_DEV_LOSS) {
 405                 ndlp->save_flags &= ~NLP_IN_RECOV_POST_DEV_LOSS;
 406                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 407                 lpfc_nlp_get(ndlp);
 408                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY | LOG_NODE,
 409                                  "8438 Devloss timeout reversed on DID x%x "
 410                                  "refcnt %d ndlp %p flag x%x "
 411                                  "port_state = x%x\n",
 412                                  ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp,
 413                                  ndlp->nlp_flag, vport->port_state);
 414                 spin_lock_irqsave(&ndlp->lock, iflags);
 415         }
 416         spin_unlock_irqrestore(&ndlp->lock, iflags);
 417 }
 418
 419 /**
 420  * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler
 421  * @ndlp: Pointer to remote node object.
 422  *
 423  * This function is called from the worker thread when devloss timeout timer
 424  * expires. For SLI4 host, this routine shall return 1 when at lease one
 425  * remote node, including this @ndlp, is still in use of FCF; otherwise, this
 426  * routine shall return 0 when there is no remote node is still in use of FCF
 427  * when devloss timeout happened to this @ndlp.
 428  **/
 429 static int
 430 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 431 {
 432         struct lpfc_vport *vport;
 433         struct lpfc_hba   *phba;
 434         uint8_t *name;
 435         int warn_on = 0;
 436         int fcf_inuse = 0;
 437         bool recovering = false;
 438         struct fc_vport *fc_vport = NULL;
 439         unsigned long iflags;
 440
 441         vport = ndlp->vport;
 442         name = (uint8_t *)&ndlp->nlp_portname;
 443         phba = vport->phba;
 444
 445         if (phba->sli_rev == LPFC_SLI_REV4)
 446                 fcf_inuse = lpfc_fcf_inuse(phba);
 447
 448         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 449                               "rport devlosstmo:did:x%x type:x%x id:x%x",
 450                               ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_sid);
 451
 452         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 453                          "3182 %s x%06x, nflag x%x xflags x%x refcnt %d\n",
 454                          __func__, ndlp->nlp_DID, ndlp->nlp_flag,
 455                          ndlp->fc4_xpt_flags, kref_read(&ndlp->kref));
 456
 457         /* If the driver is recovering the rport, ignore devloss. */
 458         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
 459                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 460                                  "0284 Devloss timeout Ignored on "
 461                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 462                                  "NPort x%x\n",
 463                                  *name, *(name+1), *(name+2), *(name+3),
 464                                  *(name+4), *(name+5), *(name+6), *(name+7),
 465                                  ndlp->nlp_DID);
 466
 467                 spin_lock_irqsave(&ndlp->lock, iflags);
 468                 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
 469                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 470                 return fcf_inuse;
 471         }
 472
 473         /* Fabric nodes are done. */
 474         if (ndlp->nlp_type & NLP_FABRIC) {
 475                 spin_lock_irqsave(&ndlp->lock, iflags);
 476
 477                 /* The driver has to account for a race between any fabric
 478                  * node that's in recovery when dev_loss_tmo expires. When this
 479                  * happens, the driver has to allow node recovery.
 480                  */
 481                 switch (ndlp->nlp_DID) {
 482                 case Fabric_DID:
 483                         fc_vport = vport->fc_vport;
 484                         if (fc_vport) {
 485                                 /* NPIV path. */
 486                                 if (fc_vport->vport_state ==
 487                                     FC_VPORT_INITIALIZING)
 488                                         recovering = true;
 489                         } else {
 490                                 /* Physical port path. */
 491                                 if (phba->hba_flag & HBA_FLOGI_OUTSTANDING)
 492                                         recovering = true;
 493                         }
 494                         break;
 495                 case Fabric_Cntl_DID:
 496                         if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
 497                                 recovering = true;
 498                         break;
 499                 case FDMI_DID:
 500                         fallthrough;
 501                 case NameServer_DID:
 502                         if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
 503                             ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE)
 504                                 recovering = true;
 505                         break;
 506                 default:
 507                         /* Ensure the nlp_DID at least has the correct prefix.
 508                          * The fabric domain controller's last three nibbles
 509                          * vary so we handle it in the default case.
 510                          */
 511                         if (ndlp->nlp_DID & Fabric_DID_MASK) {
 512                                 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
 513                                     ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE)
 514                                         recovering = true;
 515                         }
 516                         break;
 517                 }
 518                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 519
 520                 /* Mark an NLP_IN_RECOV_POST_DEV_LOSS flag to know if reversing
 521                  * the following lpfc_nlp_put is necessary after fabric node is
 522                  * recovered.
 523                  */
 524                 if (recovering) {
 525                         lpfc_printf_vlog(vport, KERN_INFO,
 526                                          LOG_DISCOVERY | LOG_NODE,
 527                                          "8436 Devloss timeout marked on "
 528                                          "DID x%x refcnt %d ndlp %p "
 529                                          "flag x%x port_state = x%x\n",
 530                                          ndlp->nlp_DID, kref_read(&ndlp->kref),
 531                                          ndlp, ndlp->nlp_flag,
 532                                          vport->port_state);
 533                         spin_lock_irqsave(&ndlp->lock, iflags);
 534                         ndlp->save_flags |= NLP_IN_RECOV_POST_DEV_LOSS;
 535                         spin_unlock_irqrestore(&ndlp->lock, iflags);
 536                 } else if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
 537                         /* Fabric node fully recovered before this dev_loss_tmo
 538                          * queue work is processed.  Thus, ignore the
 539                          * dev_loss_tmo event.
 540                          */
 541                         lpfc_printf_vlog(vport, KERN_INFO,
 542                                          LOG_DISCOVERY | LOG_NODE,
 543                                          "8437 Devloss timeout ignored on "
 544                                          "DID x%x refcnt %d ndlp %p "
 545                                          "flag x%x port_state = x%x\n",
 546                                          ndlp->nlp_DID, kref_read(&ndlp->kref),
 547                                          ndlp, ndlp->nlp_flag,
 548                                          vport->port_state);
 549                         return fcf_inuse;
 550                 }
 551
 552                 spin_lock_irqsave(&ndlp->lock, iflags);
 553                 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
 554                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 555                 lpfc_nlp_put(ndlp);
 556                 return fcf_inuse;
 557         }
 558
 559         if (ndlp->nlp_sid != NLP_NO_SID) {
 560                 warn_on = 1;
 561                 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 562         }
 563
 564         if (warn_on) {
 565                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 566                                  "0203 Devloss timeout on "
 567                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 568                                  "NPort x%06x Data: x%x x%x x%x refcnt %d\n",
 569                                  *name, *(name+1), *(name+2), *(name+3),
 570                                  *(name+4), *(name+5), *(name+6), *(name+7),
 571                                  ndlp->nlp_DID, ndlp->nlp_flag,
 572                                  ndlp->nlp_state, ndlp->nlp_rpi,
 573                                  kref_read(&ndlp->kref));
 574         } else {
 575                 lpfc_printf_vlog(vport, KERN_INFO, LOG_TRACE_EVENT,
 576                                  "0204 Devloss timeout on "
 577                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 578                                  "NPort x%06x Data: x%x x%x x%x\n",
 579                                  *name, *(name+1), *(name+2), *(name+3),
 580                                  *(name+4), *(name+5), *(name+6), *(name+7),
 581                                  ndlp->nlp_DID, ndlp->nlp_flag,
 582                                  ndlp->nlp_state, ndlp->nlp_rpi);
 583         }
 584         spin_lock_irqsave(&ndlp->lock, iflags);
 585         ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
 586         spin_unlock_irqrestore(&ndlp->lock, iflags);
 587
 588         /* If we are devloss, but we are in the process of rediscovering the
 589          * ndlp, don't issue a NLP_EVT_DEVICE_RM event.
 590          */
 591         if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
 592             ndlp->nlp_state <= NLP_STE_PRLI_ISSUE) {
 593                 return fcf_inuse;
 594         }
 595
 596         if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD))
 597                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 598
 599         return fcf_inuse;
 600 }
 601
 602 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba)
 603 {
 604         struct lpfc_vport *vport;
 605         struct lpfc_vport **vports;
 606         int i;
 607
 608         vports = lpfc_create_vport_work_array(phba);
 609         if (!vports)
 610                 return;
 611
 612         for (i = 0; i <= phba->max_vports; i++) {
 613                 if ((!vports[i]) && (i == 0))
 614                         vport = phba->pport;
 615                 else
 616                         vport = vports[i];
 617                 if (!vport)
 618                         break;
 619
 620                 if (vport->vmid_flag & LPFC_VMID_ISSUE_QFPA) {
 621                         if (!lpfc_issue_els_qfpa(vport))
 622                                 vport->vmid_flag &= ~LPFC_VMID_ISSUE_QFPA;
 623                 }
 624         }
 625         lpfc_destroy_vport_work_array(phba, vports);
 626 }
 627
 628 /**
 629  * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler
 630  * @phba: Pointer to hba context object.
 631  * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler.
 632  * @nlp_did: remote node identifer with devloss timeout.
 633  *
 634  * This function is called from the worker thread after invoking devloss
 635  * timeout handler and releasing the reference count for the ndlp with
 636  * which the devloss timeout was handled for SLI4 host. For the devloss
 637  * timeout of the last remote node which had been in use of FCF, when this
 638  * routine is invoked, it shall be guaranteed that none of the remote are
 639  * in-use of FCF. When devloss timeout to the last remote using the FCF,
 640  * if the FIP engine is neither in FCF table scan process nor roundrobin
 641  * failover process, the in-use FCF shall be unregistered. If the FIP
 642  * engine is in FCF discovery process, the devloss timeout state shall
 643  * be set for either the FCF table scan process or roundrobin failover
 644  * process to unregister the in-use FCF.
 645  **/
 646 static void
 647 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse,
 648                                     uint32_t nlp_did)
 649 {
 650         /* If devloss timeout happened to a remote node when FCF had no
 651          * longer been in-use, do nothing.
 652          */
 653         if (!fcf_inuse)
 654                 return;
 655
 656         if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) {
 657                 spin_lock_irq(&phba->hbalock);
 658                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
 659                         if (phba->hba_flag & HBA_DEVLOSS_TMO) {
 660                                 spin_unlock_irq(&phba->hbalock);
 661                                 return;
 662                         }
 663                         phba->hba_flag |= HBA_DEVLOSS_TMO;
 664                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 665                                         "2847 Last remote node (x%x) using "
 666                                         "FCF devloss tmo\n", nlp_did);
 667                 }
 668                 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) {
 669                         spin_unlock_irq(&phba->hbalock);
 670                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 671                                         "2868 Devloss tmo to FCF rediscovery "
 672                                         "in progress\n");
 673                         return;
 674                 }
 675                 if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) {
 676                         spin_unlock_irq(&phba->hbalock);
 677                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 678                                         "2869 Devloss tmo to idle FIP engine, "
 679                                         "unreg in-use FCF and rescan.\n");
 680                         /* Unregister in-use FCF and rescan */
 681                         lpfc_unregister_fcf_rescan(phba);
 682                         return;
 683                 }
 684                 spin_unlock_irq(&phba->hbalock);
 685                 if (phba->hba_flag & FCF_TS_INPROG)
 686                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 687                                         "2870 FCF table scan in progress\n");
 688                 if (phba->hba_flag & FCF_RR_INPROG)
 689                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 690                                         "2871 FLOGI roundrobin FCF failover "
 691                                         "in progress\n");
 692         }
 693         lpfc_unregister_unused_fcf(phba);
 694 }
 695
 696 /**
 697  * lpfc_alloc_fast_evt - Allocates data structure for posting event
 698  * @phba: Pointer to hba context object.
 699  *
 700  * This function is called from the functions which need to post
 701  * events from interrupt context. This function allocates data
 702  * structure required for posting event. It also keeps track of
 703  * number of events pending and prevent event storm when there are
 704  * too many events.
 705  **/
 706 struct lpfc_fast_path_event *
 707 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
 708         struct lpfc_fast_path_event *ret;
 709
 710         /* If there are lot of fast event do not exhaust memory due to this */
 711         if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
 712                 return NULL;
 713
 714         ret = kzalloc(sizeof(struct lpfc_fast_path_event),
 715                         GFP_ATOMIC);
 716         if (ret) {
 717                 atomic_inc(&phba->fast_event_count);
 718                 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
 719                 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
 720         }
 721         return ret;
 722 }
 723
 724 /**
 725  * lpfc_free_fast_evt - Frees event data structure
 726  * @phba: Pointer to hba context object.
 727  * @evt:  Event object which need to be freed.
 728  *
 729  * This function frees the data structure required for posting
 730  * events.
 731  **/
 732 void
 733 lpfc_free_fast_evt(struct lpfc_hba *phba,
 734                 struct lpfc_fast_path_event *evt) {
 735
 736         atomic_dec(&phba->fast_event_count);
 737         kfree(evt);
 738 }
 739
 740 /**
 741  * lpfc_send_fastpath_evt - Posts events generated from fast path
 742  * @phba: Pointer to hba context object.
 743  * @evtp: Event data structure.
 744  *
 745  * This function is called from worker thread, when the interrupt
 746  * context need to post an event. This function posts the event
 747  * to fc transport netlink interface.
 748  **/
 749 static void
 750 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
 751                 struct lpfc_work_evt *evtp)
 752 {
 753         unsigned long evt_category, evt_sub_category;
 754         struct lpfc_fast_path_event *fast_evt_data;
 755         char *evt_data;
 756         uint32_t evt_data_size;
 757         struct Scsi_Host *shost;
 758
 759         fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
 760                 work_evt);
 761
 762         evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
 763         evt_sub_category = (unsigned long) fast_evt_data->un.
 764                         fabric_evt.subcategory;
 765         shost = lpfc_shost_from_vport(fast_evt_data->vport);
 766         if (evt_category == FC_REG_FABRIC_EVENT) {
 767                 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
 768                         evt_data = (char *) &fast_evt_data->un.read_check_error;
 769                         evt_data_size = sizeof(fast_evt_data->un.
 770                                 read_check_error);
 771                 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
 772                         (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
 773                         evt_data = (char *) &fast_evt_data->un.fabric_evt;
 774                         evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
 775                 } else {
 776                         lpfc_free_fast_evt(phba, fast_evt_data);
 777                         return;
 778                 }
 779         } else if (evt_category == FC_REG_SCSI_EVENT) {
 780                 switch (evt_sub_category) {
 781                 case LPFC_EVENT_QFULL:
 782                 case LPFC_EVENT_DEVBSY:
 783                         evt_data = (char *) &fast_evt_data->un.scsi_evt;
 784                         evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
 785                         break;
 786                 case LPFC_EVENT_CHECK_COND:
 787                         evt_data = (char *) &fast_evt_data->un.check_cond_evt;
 788                         evt_data_size =  sizeof(fast_evt_data->un.
 789                                 check_cond_evt);
 790                         break;
 791                 case LPFC_EVENT_VARQUEDEPTH:
 792                         evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
 793                         evt_data_size = sizeof(fast_evt_data->un.
 794                                 queue_depth_evt);
 795                         break;
 796                 default:
 797                         lpfc_free_fast_evt(phba, fast_evt_data);
 798                         return;
 799                 }
 800         } else {
 801                 lpfc_free_fast_evt(phba, fast_evt_data);
 802                 return;
 803         }
 804
 805         if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
 806                 fc_host_post_vendor_event(shost,
 807                         fc_get_event_number(),
 808                         evt_data_size,
 809                         evt_data,
 810                         LPFC_NL_VENDOR_ID);
 811
 812         lpfc_free_fast_evt(phba, fast_evt_data);
 813         return;
 814 }
 815
 816 static void
 817 lpfc_work_list_done(struct lpfc_hba *phba)
 818 {
 819         struct lpfc_work_evt  *evtp = NULL;
 820         struct lpfc_nodelist  *ndlp;
 821         int free_evt;
 822         int fcf_inuse;
 823         uint32_t nlp_did;
 824         bool hba_pci_err;
 825
 826         spin_lock_irq(&phba->hbalock);
 827         while (!list_empty(&phba->work_list)) {
 828                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 829                                  evt_listp);
 830                 spin_unlock_irq(&phba->hbalock);
 831                 hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags);
 832                 free_evt = 1;
 833                 switch (evtp->evt) {
 834                 case LPFC_EVT_ELS_RETRY:
 835                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 836                         if (!hba_pci_err) {
 837                                 lpfc_els_retry_delay_handler(ndlp);
 838                                 free_evt = 0; /* evt is part of ndlp */
 839                         }
 840                         /* decrement the node reference count held
 841                          * for this queued work
 842                          */
 843                         lpfc_nlp_put(ndlp);
 844                         break;
 845                 case LPFC_EVT_DEV_LOSS:
 846                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 847                         fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp);
 848                         free_evt = 0;
 849                         /* decrement the node reference count held for
 850                          * this queued work
 851                          */
 852                         nlp_did = ndlp->nlp_DID;
 853                         lpfc_nlp_put(ndlp);
 854                         if (phba->sli_rev == LPFC_SLI_REV4)
 855                                 lpfc_sli4_post_dev_loss_tmo_handler(phba,
 856                                                                     fcf_inuse,
 857                                                                     nlp_did);
 858                         break;
 859                 case LPFC_EVT_RECOVER_PORT:
 860                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 861                         if (!hba_pci_err) {
 862                                 lpfc_sli_abts_recover_port(ndlp->vport, ndlp);
 863                                 free_evt = 0;
 864                         }
 865                         /* decrement the node reference count held for
 866                          * this queued work
 867                          */
 868                         lpfc_nlp_put(ndlp);
 869                         break;
 870                 case LPFC_EVT_ONLINE:
 871                         if (phba->link_state < LPFC_LINK_DOWN)
 872                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 873                         else
 874                                 *(int *) (evtp->evt_arg1) = 0;
 875                         complete((struct completion *)(evtp->evt_arg2));
 876                         break;
 877                 case LPFC_EVT_OFFLINE_PREP:
 878                         if (phba->link_state >= LPFC_LINK_DOWN)
 879                                 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
 880                         *(int *)(evtp->evt_arg1) = 0;
 881                         complete((struct completion *)(evtp->evt_arg2));
 882                         break;
 883                 case LPFC_EVT_OFFLINE:
 884                         lpfc_offline(phba);
 885                         lpfc_sli_brdrestart(phba);
 886                         *(int *)(evtp->evt_arg1) =
 887                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 888                         lpfc_unblock_mgmt_io(phba);
 889                         complete((struct completion *)(evtp->evt_arg2));
 890                         break;
 891                 case LPFC_EVT_WARM_START:
 892                         lpfc_offline(phba);
 893                         lpfc_reset_barrier(phba);
 894                         lpfc_sli_brdreset(phba);
 895                         lpfc_hba_down_post(phba);
 896                         *(int *)(evtp->evt_arg1) =
 897                                 lpfc_sli_brdready(phba, HS_MBRDY);
 898                         lpfc_unblock_mgmt_io(phba);
 899                         complete((struct completion *)(evtp->evt_arg2));
 900                         break;
 901                 case LPFC_EVT_KILL:
 902                         lpfc_offline(phba);
 903                         *(int *)(evtp->evt_arg1)
 904                                 = (phba->pport->stopped)
 905                                         ? 0 : lpfc_sli_brdkill(phba);
 906                         lpfc_unblock_mgmt_io(phba);
 907                         complete((struct completion *)(evtp->evt_arg2));
 908                         break;
 909                 case LPFC_EVT_FASTPATH_MGMT_EVT:
 910                         lpfc_send_fastpath_evt(phba, evtp);
 911                         free_evt = 0;
 912                         break;
 913                 case LPFC_EVT_RESET_HBA:
 914                         if (!(phba->pport->load_flag & FC_UNLOADING))
 915                                 lpfc_reset_hba(phba);
 916                         break;
 917                 }
 918                 if (free_evt)
 919                         kfree(evtp);
 920                 spin_lock_irq(&phba->hbalock);
 921         }
 922         spin_unlock_irq(&phba->hbalock);
 923
 924 }
 925
 926 static void
 927 lpfc_work_done(struct lpfc_hba *phba)
 928 {
 929         struct lpfc_sli_ring *pring;
 930         uint32_t ha_copy, status, control, work_port_events;
 931         struct lpfc_vport **vports;
 932         struct lpfc_vport *vport;
 933         int i;
 934         bool hba_pci_err;
 935
 936         hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags);
 937         spin_lock_irq(&phba->hbalock);
 938         ha_copy = phba->work_ha;
 939         phba->work_ha = 0;
 940         spin_unlock_irq(&phba->hbalock);
 941         if (hba_pci_err)
 942                 ha_copy = 0;
 943
 944         /* First, try to post the next mailbox command to SLI4 device */
 945         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC && !hba_pci_err)
 946                 lpfc_sli4_post_async_mbox(phba);
 947
 948         if (ha_copy & HA_ERATT) {
 949                 /* Handle the error attention event */
 950                 lpfc_handle_eratt(phba);
 951
 952                 if (phba->fw_dump_cmpl) {
 953                         complete(phba->fw_dump_cmpl);
 954                         phba->fw_dump_cmpl = NULL;
 955                 }
 956         }
 957
 958         if (ha_copy & HA_MBATT)
 959                 lpfc_sli_handle_mb_event(phba);
 960
 961         if (ha_copy & HA_LATT)
 962                 lpfc_handle_latt(phba);
 963
 964         /* Handle VMID Events */
 965         if (lpfc_is_vmid_enabled(phba) && !hba_pci_err) {
 966                 if (phba->pport->work_port_events &
 967                     WORKER_CHECK_VMID_ISSUE_QFPA) {
 968                         lpfc_check_vmid_qfpa_issue(phba);
 969                         phba->pport->work_port_events &=
 970                                 ~WORKER_CHECK_VMID_ISSUE_QFPA;
 971                 }
 972                 if (phba->pport->work_port_events &
 973                     WORKER_CHECK_INACTIVE_VMID) {
 974                         lpfc_check_inactive_vmid(phba);
 975                         phba->pport->work_port_events &=
 976                             ~WORKER_CHECK_INACTIVE_VMID;
 977                 }
 978         }
 979
 980         /* Process SLI4 events */
 981         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
 982                 if (phba->hba_flag & HBA_RRQ_ACTIVE)
 983                         lpfc_handle_rrq_active(phba);
 984                 if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
 985                         lpfc_sli4_els_xri_abort_event_proc(phba);
 986                 if (phba->hba_flag & ASYNC_EVENT)
 987                         lpfc_sli4_async_event_proc(phba);
 988                 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
 989                         spin_lock_irq(&phba->hbalock);
 990                         phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
 991                         spin_unlock_irq(&phba->hbalock);
 992                         lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
 993                 }
 994                 if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
 995                         lpfc_sli4_fcf_redisc_event_proc(phba);
 996         }
 997
 998         vports = lpfc_create_vport_work_array(phba);
 999         if (vports != NULL)
1000                 for (i = 0; i <= phba->max_vports; i++) {
1001                         /*
1002                          * We could have no vports in array if unloading, so if
1003                          * this happens then just use the pport
1004                          */
1005                         if (vports[i] == NULL && i == 0)
1006                                 vport = phba->pport;
1007                         else
1008                                 vport = vports[i];
1009                         if (vport == NULL)
1010                                 break;
1011                         spin_lock_irq(&vport->work_port_lock);
1012                         work_port_events = vport->work_port_events;
1013                         vport->work_port_events &= ~work_port_events;
1014                         spin_unlock_irq(&vport->work_port_lock);
1015                         if (hba_pci_err)
1016                                 continue;
1017                         if (work_port_events & WORKER_DISC_TMO)
1018                                 lpfc_disc_timeout_handler(vport);
1019                         if (work_port_events & WORKER_ELS_TMO)
1020                                 lpfc_els_timeout_handler(vport);
1021                         if (work_port_events & WORKER_HB_TMO)
1022                                 lpfc_hb_timeout_handler(phba);
1023                         if (work_port_events & WORKER_MBOX_TMO)
1024                                 lpfc_mbox_timeout_handler(phba);
1025                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
1026                                 lpfc_unblock_fabric_iocbs(phba);
1027                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
1028                                 lpfc_ramp_down_queue_handler(phba);
1029                         if (work_port_events & WORKER_DELAYED_DISC_TMO)
1030                                 lpfc_delayed_disc_timeout_handler(vport);
1031                 }
1032         lpfc_destroy_vport_work_array(phba, vports);
1033
1034         pring = lpfc_phba_elsring(phba);
1035         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
1036         status >>= (4*LPFC_ELS_RING);
1037         if (pring && (status & HA_RXMASK ||
1038                       pring->flag & LPFC_DEFERRED_RING_EVENT ||
1039                       phba->hba_flag & HBA_SP_QUEUE_EVT)) {
1040                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
1041                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
1042                         /* Preserve legacy behavior. */
1043                         if (!(phba->hba_flag & HBA_SP_QUEUE_EVT))
1044                                 set_bit(LPFC_DATA_READY, &phba->data_flags);
1045                 } else {
1046                         /* Driver could have abort request completed in queue
1047                          * when link goes down.  Allow for this transition.
1048                          */
1049                         if (phba->link_state >= LPFC_LINK_DOWN ||
1050                             phba->link_flag & LS_MDS_LOOPBACK) {
1051                                 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
1052                                 lpfc_sli_handle_slow_ring_event(phba, pring,
1053                                                                 (status &
1054                                                                 HA_RXMASK));
1055                         }
1056                 }
1057                 if (phba->sli_rev == LPFC_SLI_REV4)
1058                         lpfc_drain_txq(phba);
1059                 /*
1060                  * Turn on Ring interrupts
1061                  */
1062                 if (phba->sli_rev <= LPFC_SLI_REV3) {
1063                         spin_lock_irq(&phba->hbalock);
1064                         control = readl(phba->HCregaddr);
1065                         if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
1066                                 lpfc_debugfs_slow_ring_trc(phba,
1067                                         "WRK Enable ring: cntl:x%x hacopy:x%x",
1068                                         control, ha_copy, 0);
1069
1070                                 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
1071                                 writel(control, phba->HCregaddr);
1072                                 readl(phba->HCregaddr); /* flush */
1073                         } else {
1074                                 lpfc_debugfs_slow_ring_trc(phba,
1075                                         "WRK Ring ok:     cntl:x%x hacopy:x%x",
1076                                         control, ha_copy, 0);
1077                         }
1078                         spin_unlock_irq(&phba->hbalock);
1079                 }
1080         }
1081         lpfc_work_list_done(phba);
1082 }
1083
1084 int
1085 lpfc_do_work(void *p)
1086 {
1087         struct lpfc_hba *phba = p;
1088         int rc;
1089
1090         set_user_nice(current, MIN_NICE);
1091         current->flags |= PF_NOFREEZE;
1092         phba->data_flags = 0;
1093
1094         while (!kthread_should_stop()) {
1095                 /* wait and check worker queue activities */
1096                 rc = wait_event_interruptible(phba->work_waitq,
1097                                         (test_and_clear_bit(LPFC_DATA_READY,
1098                                                             &phba->data_flags)
1099                                          || kthread_should_stop()));
1100                 /* Signal wakeup shall terminate the worker thread */
1101                 if (rc) {
1102                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1103                                         "0433 Wakeup on signal: rc=x%x\n", rc);
1104                         break;
1105                 }
1106
1107                 /* Attend pending lpfc data processing */
1108                 lpfc_work_done(phba);
1109         }
1110         phba->worker_thread = NULL;
1111         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1112                         "0432 Worker thread stopped.\n");
1113         return 0;
1114 }
1115
1116 /*
1117  * This is only called to handle FC worker events. Since this a rare
1118  * occurrence, we allocate a struct lpfc_work_evt structure here instead of
1119  * embedding it in the IOCB.
1120  */
1121 int
1122 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
1123                       uint32_t evt)
1124 {
1125         struct lpfc_work_evt  *evtp;
1126         unsigned long flags;
1127
1128         /*
1129          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
1130          * be queued to worker thread for processing
1131          */
1132         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
1133         if (!evtp)
1134                 return 0;
1135
1136         evtp->evt_arg1  = arg1;
1137         evtp->evt_arg2  = arg2;
1138         evtp->evt       = evt;
1139
1140         spin_lock_irqsave(&phba->hbalock, flags);
1141         list_add_tail(&evtp->evt_listp, &phba->work_list);
1142         spin_unlock_irqrestore(&phba->hbalock, flags);
1143
1144         lpfc_worker_wake_up(phba);
1145
1146         return 1;
1147 }
1148
1149 void
1150 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
1151 {
1152         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1153         struct lpfc_hba  *phba = vport->phba;
1154         struct lpfc_nodelist *ndlp, *next_ndlp;
1155
1156         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
1157                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
1158                     ((vport->port_type == LPFC_NPIV_PORT) &&
1159                      ((ndlp->nlp_DID == NameServer_DID) ||
1160                       (ndlp->nlp_DID == FDMI_DID) ||
1161                       (ndlp->nlp_DID == Fabric_Cntl_DID))))
1162                         lpfc_unreg_rpi(vport, ndlp);
1163
1164                 /* Leave Fabric nodes alone on link down */
1165                 if ((phba->sli_rev < LPFC_SLI_REV4) &&
1166                     (!remove && ndlp->nlp_type & NLP_FABRIC))
1167                         continue;
1168
1169                 /* Notify transport of connectivity loss to trigger cleanup. */
1170                 if (phba->nvmet_support &&
1171                     ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
1172                         lpfc_nvmet_invalidate_host(phba, ndlp);
1173
1174                 lpfc_disc_state_machine(vport, ndlp, NULL,
1175                                         remove
1176                                         ? NLP_EVT_DEVICE_RM
1177                                         : NLP_EVT_DEVICE_RECOVERY);
1178         }
1179         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
1180                 if (phba->sli_rev == LPFC_SLI_REV4)
1181                         lpfc_sli4_unreg_all_rpis(vport);
1182                 lpfc_mbx_unreg_vpi(vport);
1183                 spin_lock_irq(shost->host_lock);
1184                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
1185                 spin_unlock_irq(shost->host_lock);
1186         }
1187 }
1188
1189 void
1190 lpfc_port_link_failure(struct lpfc_vport *vport)
1191 {
1192         lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
1193
1194         /* Cleanup any outstanding received buffers */
1195         lpfc_cleanup_rcv_buffers(vport);
1196
1197         /* Cleanup any outstanding RSCN activity */
1198         lpfc_els_flush_rscn(vport);
1199
1200         /* Cleanup any outstanding ELS commands */
1201         lpfc_els_flush_cmd(vport);
1202
1203         lpfc_cleanup_rpis(vport, 0);
1204
1205         /* Turn off discovery timer if its running */
1206         lpfc_can_disctmo(vport);
1207 }
1208
1209 void
1210 lpfc_linkdown_port(struct lpfc_vport *vport)
1211 {
1212         struct lpfc_hba *phba = vport->phba;
1213         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1214
1215         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1216                 fc_host_post_event(shost, fc_get_event_number(),
1217                                    FCH_EVT_LINKDOWN, 0);
1218
1219         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1220                 "Link Down:       state:x%x rtry:x%x flg:x%x",
1221                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1222
1223         lpfc_port_link_failure(vport);
1224
1225         /* Stop delayed Nport discovery */
1226         spin_lock_irq(shost->host_lock);
1227         vport->fc_flag &= ~FC_DISC_DELAYED;
1228         spin_unlock_irq(shost->host_lock);
1229         del_timer_sync(&vport->delayed_disc_tmo);
1230
1231         if (phba->sli_rev == LPFC_SLI_REV4 &&
1232             vport->port_type == LPFC_PHYSICAL_PORT &&
1233             phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_CONFIG) {
1234                 /* Assume success on link up */
1235                 phba->sli4_hba.fawwpn_flag |= LPFC_FAWWPN_FABRIC;
1236         }
1237 }
1238
1239 int
1240 lpfc_linkdown(struct lpfc_hba *phba)
1241 {
1242         struct lpfc_vport *vport = phba->pport;
1243         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1244         struct lpfc_vport **vports;
1245         LPFC_MBOXQ_t          *mb;
1246         int i;
1247         int offline;
1248
1249         if (phba->link_state == LPFC_LINK_DOWN)
1250                 return 0;
1251
1252         /* Block all SCSI stack I/Os */
1253         lpfc_scsi_dev_block(phba);
1254         offline = pci_channel_offline(phba->pcidev);
1255
1256         phba->defer_flogi_acc_flag = false;
1257
1258         /* Clear external loopback plug detected flag */
1259         phba->link_flag &= ~LS_EXTERNAL_LOOPBACK;
1260
1261         spin_lock_irq(&phba->hbalock);
1262         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
1263         spin_unlock_irq(&phba->hbalock);
1264         if (phba->link_state > LPFC_LINK_DOWN) {
1265                 phba->link_state = LPFC_LINK_DOWN;
1266                 if (phba->sli4_hba.conf_trunk) {
1267                         phba->trunk_link.link0.state = 0;
1268                         phba->trunk_link.link1.state = 0;
1269                         phba->trunk_link.link2.state = 0;
1270                         phba->trunk_link.link3.state = 0;
1271                         phba->trunk_link.phy_lnk_speed =
1272                                                 LPFC_LINK_SPEED_UNKNOWN;
1273                         phba->sli4_hba.link_state.logical_speed =
1274                                                 LPFC_LINK_SPEED_UNKNOWN;
1275                 }
1276                 spin_lock_irq(shost->host_lock);
1277                 phba->pport->fc_flag &= ~FC_LBIT;
1278                 spin_unlock_irq(shost->host_lock);
1279         }
1280         vports = lpfc_create_vport_work_array(phba);
1281         if (vports != NULL) {
1282                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
1283                         /* Issue a LINK DOWN event to all nodes */
1284                         lpfc_linkdown_port(vports[i]);
1285
1286                         vports[i]->fc_myDID = 0;
1287
1288                         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
1289                             (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1290                                 if (phba->nvmet_support)
1291                                         lpfc_nvmet_update_targetport(phba);
1292                                 else
1293                                         lpfc_nvme_update_localport(vports[i]);
1294                         }
1295                 }
1296         }
1297         lpfc_destroy_vport_work_array(phba, vports);
1298
1299         /* Clean up any SLI3 firmware default rpi's */
1300         if (phba->sli_rev > LPFC_SLI_REV3 || offline)
1301                 goto skip_unreg_did;
1302
1303         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1304         if (mb) {
1305                 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb);
1306                 mb->vport = vport;
1307                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1308                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
1309                     == MBX_NOT_FINISHED) {
1310                         mempool_free(mb, phba->mbox_mem_pool);
1311                 }
1312         }
1313
1314  skip_unreg_did:
1315         /* Setup myDID for link up if we are in pt2pt mode */
1316         if (phba->pport->fc_flag & FC_PT2PT) {
1317                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1318                 if (mb) {
1319                         lpfc_config_link(phba, mb);
1320                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1321                         mb->vport = vport;
1322                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
1323                             == MBX_NOT_FINISHED) {
1324                                 mempool_free(mb, phba->mbox_mem_pool);
1325                         }
1326                 }
1327                 spin_lock_irq(shost->host_lock);
1328                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
1329                 phba->pport->rcv_flogi_cnt = 0;
1330                 spin_unlock_irq(shost->host_lock);
1331         }
1332         return 0;
1333 }
1334
1335 static void
1336 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
1337 {
1338         struct lpfc_nodelist *ndlp;
1339
1340         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
1341                 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
1342
1343                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
1344                         continue;
1345                 if (ndlp->nlp_type & NLP_FABRIC) {
1346                         /* On Linkup its safe to clean up the ndlp
1347                          * from Fabric connections.
1348                          */
1349                         if (ndlp->nlp_DID != Fabric_DID)
1350                                 lpfc_unreg_rpi(vport, ndlp);
1351                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1352                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
1353                         /* Fail outstanding IO now since device is
1354                          * marked for PLOGI.
1355                          */
1356                         lpfc_unreg_rpi(vport, ndlp);
1357                 }
1358         }
1359 }
1360
1361 static void
1362 lpfc_linkup_port(struct lpfc_vport *vport)
1363 {
1364         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1365         struct lpfc_hba  *phba = vport->phba;
1366
1367         if ((vport->load_flag & FC_UNLOADING) != 0)
1368                 return;
1369
1370         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1371                 "Link Up:         top:x%x speed:x%x flg:x%x",
1372                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
1373
1374         /* If NPIV is not enabled, only bring the physical port up */
1375         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
1376                 (vport != phba->pport))
1377                 return;
1378
1379         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1380                 fc_host_post_event(shost, fc_get_event_number(),
1381                                    FCH_EVT_LINKUP, 0);
1382
1383         spin_lock_irq(shost->host_lock);
1384         if (phba->defer_flogi_acc_flag)
1385                 vport->fc_flag &= ~(FC_ABORT_DISCOVERY | FC_RSCN_MODE |
1386                                     FC_NLP_MORE | FC_RSCN_DISCOVERY);
1387         else
1388                 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI |
1389                                     FC_ABORT_DISCOVERY | FC_RSCN_MODE |
1390                                     FC_NLP_MORE | FC_RSCN_DISCOVERY);
1391         vport->fc_flag |= FC_NDISC_ACTIVE;
1392         vport->fc_ns_retry = 0;
1393         spin_unlock_irq(shost->host_lock);
1394         lpfc_setup_fdmi_mask(vport);
1395
1396         lpfc_linkup_cleanup_nodes(vport);
1397 }
1398
1399 static int
1400 lpfc_linkup(struct lpfc_hba *phba)
1401 {
1402         struct lpfc_vport **vports;
1403         int i;
1404         struct Scsi_Host  *shost = lpfc_shost_from_vport(phba->pport);
1405
1406         phba->link_state = LPFC_LINK_UP;
1407
1408         /* Unblock fabric iocbs if they are blocked */
1409         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
1410         del_timer_sync(&phba->fabric_block_timer);
1411
1412         vports = lpfc_create_vport_work_array(phba);
1413         if (vports != NULL)
1414                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
1415                         lpfc_linkup_port(vports[i]);
1416         lpfc_destroy_vport_work_array(phba, vports);
1417
1418         /* Clear the pport flogi counter in case the link down was
1419          * absorbed without an ACQE. No lock here - in worker thread
1420          * and discovery is synchronized.
1421          */
1422         spin_lock_irq(shost->host_lock);
1423         phba->pport->rcv_flogi_cnt = 0;
1424         spin_unlock_irq(shost->host_lock);
1425
1426         /* reinitialize initial HBA flag */
1427         phba->hba_flag &= ~(HBA_FLOGI_ISSUED | HBA_RHBA_CMPL);
1428
1429         return 0;
1430 }
1431
1432 /*
1433  * This routine handles processing a CLEAR_LA mailbox
1434  * command upon completion. It is setup in the LPFC_MBOXQ
1435  * as the completion routine when the command is
1436  * handed off to the SLI layer. SLI3 only.
1437  */
1438 static void
1439 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1440 {
1441         struct lpfc_vport *vport = pmb->vport;
1442         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1443         struct lpfc_sli   *psli = &phba->sli;
1444         MAILBOX_t *mb = &pmb->u.mb;
1445         uint32_t control;
1446
1447         /* Since we don't do discovery right now, turn these off here */
1448         psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1449         psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1450
1451         /* Check for error */
1452         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
1453                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
1454                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1455                                  "0320 CLEAR_LA mbxStatus error x%x hba "
1456                                  "state x%x\n",
1457                                  mb->mbxStatus, vport->port_state);
1458                 phba->link_state = LPFC_HBA_ERROR;
1459                 goto out;
1460         }
1461
1462         if (vport->port_type == LPFC_PHYSICAL_PORT)
1463                 phba->link_state = LPFC_HBA_READY;
1464
1465         spin_lock_irq(&phba->hbalock);
1466         psli->sli_flag |= LPFC_PROCESS_LA;
1467         control = readl(phba->HCregaddr);
1468         control |= HC_LAINT_ENA;
1469         writel(control, phba->HCregaddr);
1470         readl(phba->HCregaddr); /* flush */
1471         spin_unlock_irq(&phba->hbalock);
1472         mempool_free(pmb, phba->mbox_mem_pool);
1473         return;
1474
1475 out:
1476         /* Device Discovery completes */
1477         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1478                          "0225 Device Discovery completes\n");
1479         mempool_free(pmb, phba->mbox_mem_pool);
1480
1481         spin_lock_irq(shost->host_lock);
1482         vport->fc_flag &= ~FC_ABORT_DISCOVERY;
1483         spin_unlock_irq(shost->host_lock);
1484
1485         lpfc_can_disctmo(vport);
1486
1487         /* turn on Link Attention interrupts */
1488
1489         spin_lock_irq(&phba->hbalock);
1490         psli->sli_flag |= LPFC_PROCESS_LA;
1491         control = readl(phba->HCregaddr);
1492         control |= HC_LAINT_ENA;
1493         writel(control, phba->HCregaddr);
1494         readl(phba->HCregaddr); /* flush */
1495         spin_unlock_irq(&phba->hbalock);
1496
1497         return;
1498 }
1499
1500 void
1501 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1502 {
1503         struct lpfc_vport *vport = pmb->vport;
1504         LPFC_MBOXQ_t *sparam_mb;
1505         u16 status = pmb->u.mb.mbxStatus;
1506         int rc;
1507
1508         mempool_free(pmb, phba->mbox_mem_pool);
1509
1510         if (status)
1511                 goto out;
1512
1513         /* don't perform discovery for SLI4 loopback diagnostic test */
1514         if ((phba->sli_rev == LPFC_SLI_REV4) &&
1515             !(phba->hba_flag & HBA_FCOE_MODE) &&
1516             (phba->link_flag & LS_LOOPBACK_MODE))
1517                 return;
1518
1519         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
1520             vport->fc_flag & FC_PUBLIC_LOOP &&
1521             !(vport->fc_flag & FC_LBIT)) {
1522                         /* Need to wait for FAN - use discovery timer
1523                          * for timeout.  port_state is identically
1524                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
1525                          */
1526                         lpfc_set_disctmo(vport);
1527                         return;
1528         }
1529
1530         /* Start discovery by sending a FLOGI. port_state is identically
1531          * LPFC_FLOGI while waiting for FLOGI cmpl.
1532          */
1533         if (vport->port_state != LPFC_FLOGI) {
1534                 /* Issue MBX_READ_SPARAM to update CSPs before FLOGI if
1535                  * bb-credit recovery is in place.
1536                  */
1537                 if (phba->bbcredit_support && phba->cfg_enable_bbcr &&
1538                     !(phba->link_flag & LS_LOOPBACK_MODE)) {
1539                         sparam_mb = mempool_alloc(phba->mbox_mem_pool,
1540                                                   GFP_KERNEL);
1541                         if (!sparam_mb)
1542                                 goto sparam_out;
1543
1544                         rc = lpfc_read_sparam(phba, sparam_mb, 0);
1545                         if (rc) {
1546                                 mempool_free(sparam_mb, phba->mbox_mem_pool);
1547                                 goto sparam_out;
1548                         }
1549                         sparam_mb->vport = vport;
1550                         sparam_mb->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1551                         rc = lpfc_sli_issue_mbox(phba, sparam_mb, MBX_NOWAIT);
1552                         if (rc == MBX_NOT_FINISHED) {
1553                                 lpfc_mbox_rsrc_cleanup(phba, sparam_mb,
1554                                                        MBOX_THD_UNLOCKED);
1555                                 goto sparam_out;
1556                         }
1557
1558                         phba->hba_flag |= HBA_DEFER_FLOGI;
1559                 }  else {
1560                         lpfc_initial_flogi(vport);
1561                 }
1562         } else {
1563                 if (vport->fc_flag & FC_PT2PT)
1564                         lpfc_disc_start(vport);
1565         }
1566         return;
1567
1568 out:
1569         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1570                          "0306 CONFIG_LINK mbxStatus error x%x HBA state x%x\n",
1571                          status, vport->port_state);
1572
1573 sparam_out:
1574         lpfc_linkdown(phba);
1575
1576         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1577                          "0200 CONFIG_LINK bad hba state x%x\n",
1578                          vport->port_state);
1579
1580         lpfc_issue_clear_la(phba, vport);
1581         return;
1582 }
1583
1584 /**
1585  * lpfc_sli4_clear_fcf_rr_bmask
1586  * @phba: pointer to the struct lpfc_hba for this port.
1587  * This fucnction resets the round robin bit mask and clears the
1588  * fcf priority list. The list deletions are done while holding the
1589  * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared
1590  * from the lpfc_fcf_pri record.
1591  **/
1592 void
1593 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba)
1594 {
1595         struct lpfc_fcf_pri *fcf_pri;
1596         struct lpfc_fcf_pri *next_fcf_pri;
1597         memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask));
1598         spin_lock_irq(&phba->hbalock);
1599         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
1600                                 &phba->fcf.fcf_pri_list, list) {
1601                 list_del_init(&fcf_pri->list);
1602                 fcf_pri->fcf_rec.flag = 0;
1603         }
1604         spin_unlock_irq(&phba->hbalock);
1605 }
1606 static void
1607 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1608 {
1609         struct lpfc_vport *vport = mboxq->vport;
1610
1611         if (mboxq->u.mb.mbxStatus) {
1612                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1613                                  "2017 REG_FCFI mbxStatus error x%x "
1614                                  "HBA state x%x\n", mboxq->u.mb.mbxStatus,
1615                                  vport->port_state);
1616                 goto fail_out;
1617         }
1618
1619         /* Start FCoE discovery by sending a FLOGI. */
1620         phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1621         /* Set the FCFI registered flag */
1622         spin_lock_irq(&phba->hbalock);
1623         phba->fcf.fcf_flag |= FCF_REGISTERED;
1624         spin_unlock_irq(&phba->hbalock);
1625
1626         /* If there is a pending FCoE event, restart FCF table scan. */
1627         if ((!(phba->hba_flag & FCF_RR_INPROG)) &&
1628                 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF))
1629                 goto fail_out;
1630
1631         /* Mark successful completion of FCF table scan */
1632         spin_lock_irq(&phba->hbalock);
1633         phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1634         phba->hba_flag &= ~FCF_TS_INPROG;
1635         if (vport->port_state != LPFC_FLOGI) {
1636                 phba->hba_flag |= FCF_RR_INPROG;
1637                 spin_unlock_irq(&phba->hbalock);
1638                 lpfc_issue_init_vfi(vport);
1639                 goto out;
1640         }
1641         spin_unlock_irq(&phba->hbalock);
1642         goto out;
1643
1644 fail_out:
1645         spin_lock_irq(&phba->hbalock);
1646         phba->hba_flag &= ~FCF_RR_INPROG;
1647         spin_unlock_irq(&phba->hbalock);
1648 out:
1649         mempool_free(mboxq, phba->mbox_mem_pool);
1650 }
1651
1652 /**
1653  * lpfc_fab_name_match - Check if the fcf fabric name match.
1654  * @fab_name: pointer to fabric name.
1655  * @new_fcf_record: pointer to fcf record.
1656  *
1657  * This routine compare the fcf record's fabric name with provided
1658  * fabric name. If the fabric name are identical this function
1659  * returns 1 else return 0.
1660  **/
1661 static uint32_t
1662 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1663 {
1664         if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1665                 return 0;
1666         if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1667                 return 0;
1668         if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1669                 return 0;
1670         if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1671                 return 0;
1672         if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1673                 return 0;
1674         if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1675                 return 0;
1676         if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1677                 return 0;
1678         if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1679                 return 0;
1680         return 1;
1681 }
1682
1683 /**
1684  * lpfc_sw_name_match - Check if the fcf switch name match.
1685  * @sw_name: pointer to switch name.
1686  * @new_fcf_record: pointer to fcf record.
1687  *
1688  * This routine compare the fcf record's switch name with provided
1689  * switch name. If the switch name are identical this function
1690  * returns 1 else return 0.
1691  **/
1692 static uint32_t
1693 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1694 {
1695         if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1696                 return 0;
1697         if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1698                 return 0;
1699         if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1700                 return 0;
1701         if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1702                 return 0;
1703         if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1704                 return 0;
1705         if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1706                 return 0;
1707         if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1708                 return 0;
1709         if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1710                 return 0;
1711         return 1;
1712 }
1713
1714 /**
1715  * lpfc_mac_addr_match - Check if the fcf mac address match.
1716  * @mac_addr: pointer to mac address.
1717  * @new_fcf_record: pointer to fcf record.
1718  *
1719  * This routine compare the fcf record's mac address with HBA's
1720  * FCF mac address. If the mac addresses are identical this function
1721  * returns 1 else return 0.
1722  **/
1723 static uint32_t
1724 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1725 {
1726         if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1727                 return 0;
1728         if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1729                 return 0;
1730         if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1731                 return 0;
1732         if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1733                 return 0;
1734         if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1735                 return 0;
1736         if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1737                 return 0;
1738         return 1;
1739 }
1740
1741 static bool
1742 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1743 {
1744         return (curr_vlan_id == new_vlan_id);
1745 }
1746
1747 /**
1748  * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record.
1749  * @phba: pointer to lpfc hba data structure.
1750  * @fcf_index: Index for the lpfc_fcf_record.
1751  * @new_fcf_record: pointer to hba fcf record.
1752  *
1753  * This routine updates the driver FCF priority record from the new HBA FCF
1754  * record. The hbalock is asserted held in the code path calling this
1755  * routine.
1756  **/
1757 static void
1758 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index,
1759                                  struct fcf_record *new_fcf_record
1760                                  )
1761 {
1762         struct lpfc_fcf_pri *fcf_pri;
1763
1764         fcf_pri = &phba->fcf.fcf_pri[fcf_index];
1765         fcf_pri->fcf_rec.fcf_index = fcf_index;
1766         /* FCF record priority */
1767         fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
1768
1769 }
1770
1771 /**
1772  * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1773  * @fcf_rec: pointer to driver fcf record.
1774  * @new_fcf_record: pointer to fcf record.
1775  *
1776  * This routine copies the FCF information from the FCF
1777  * record to lpfc_hba data structure.
1778  **/
1779 static void
1780 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1781                      struct fcf_record *new_fcf_record)
1782 {
1783         /* Fabric name */
1784         fcf_rec->fabric_name[0] =
1785                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1786         fcf_rec->fabric_name[1] =
1787                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1788         fcf_rec->fabric_name[2] =
1789                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1790         fcf_rec->fabric_name[3] =
1791                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1792         fcf_rec->fabric_name[4] =
1793                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1794         fcf_rec->fabric_name[5] =
1795                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1796         fcf_rec->fabric_name[6] =
1797                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1798         fcf_rec->fabric_name[7] =
1799                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1800         /* Mac address */
1801         fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1802         fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1803         fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1804         fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1805         fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1806         fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1807         /* FCF record index */
1808         fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1809         /* FCF record priority */
1810         fcf_rec->priority = new_fcf_record->fip_priority;
1811         /* Switch name */
1812         fcf_rec->switch_name[0] =
1813                 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1814         fcf_rec->switch_name[1] =
1815                 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1816         fcf_rec->switch_name[2] =
1817                 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1818         fcf_rec->switch_name[3] =
1819                 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1820         fcf_rec->switch_name[4] =
1821                 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1822         fcf_rec->switch_name[5] =
1823                 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1824         fcf_rec->switch_name[6] =
1825                 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1826         fcf_rec->switch_name[7] =
1827                 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1828 }
1829
1830 /**
1831  * __lpfc_update_fcf_record - Update driver fcf record
1832  * @phba: pointer to lpfc hba data structure.
1833  * @fcf_rec: pointer to driver fcf record.
1834  * @new_fcf_record: pointer to hba fcf record.
1835  * @addr_mode: address mode to be set to the driver fcf record.
1836  * @vlan_id: vlan tag to be set to the driver fcf record.
1837  * @flag: flag bits to be set to the driver fcf record.
1838  *
1839  * This routine updates the driver FCF record from the new HBA FCF record
1840  * together with the address mode, vlan_id, and other informations. This
1841  * routine is called with the hbalock held.
1842  **/
1843 static void
1844 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1845                        struct fcf_record *new_fcf_record, uint32_t addr_mode,
1846                        uint16_t vlan_id, uint32_t flag)
1847 {
1848         lockdep_assert_held(&phba->hbalock);
1849
1850         /* Copy the fields from the HBA's FCF record */
1851         lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1852         /* Update other fields of driver FCF record */
1853         fcf_rec->addr_mode = addr_mode;
1854         fcf_rec->vlan_id = vlan_id;
1855         fcf_rec->flag |= (flag | RECORD_VALID);
1856         __lpfc_update_fcf_record_pri(phba,
1857                 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record),
1858                                  new_fcf_record);
1859 }
1860
1861 /**
1862  * lpfc_register_fcf - Register the FCF with hba.
1863  * @phba: pointer to lpfc hba data structure.
1864  *
1865  * This routine issues a register fcfi mailbox command to register
1866  * the fcf with HBA.
1867  **/
1868 static void
1869 lpfc_register_fcf(struct lpfc_hba *phba)
1870 {
1871         LPFC_MBOXQ_t *fcf_mbxq;
1872         int rc;
1873
1874         spin_lock_irq(&phba->hbalock);
1875         /* If the FCF is not available do nothing. */
1876         if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1877                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1878                 spin_unlock_irq(&phba->hbalock);
1879                 return;
1880         }
1881
1882         /* The FCF is already registered, start discovery */
1883         if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1884                 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1885                 phba->hba_flag &= ~FCF_TS_INPROG;
1886                 if (phba->pport->port_state != LPFC_FLOGI &&
1887                     phba->pport->fc_flag & FC_FABRIC) {
1888                         phba->hba_flag |= FCF_RR_INPROG;
1889                         spin_unlock_irq(&phba->hbalock);
1890                         lpfc_initial_flogi(phba->pport);
1891                         return;
1892                 }
1893                 spin_unlock_irq(&phba->hbalock);
1894                 return;
1895         }
1896         spin_unlock_irq(&phba->hbalock);
1897
1898         fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1899         if (!fcf_mbxq) {
1900                 spin_lock_irq(&phba->hbalock);
1901                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1902                 spin_unlock_irq(&phba->hbalock);
1903                 return;
1904         }
1905
1906         lpfc_reg_fcfi(phba, fcf_mbxq);
1907         fcf_mbxq->vport = phba->pport;
1908         fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1909         rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1910         if (rc == MBX_NOT_FINISHED) {
1911                 spin_lock_irq(&phba->hbalock);
1912                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1913                 spin_unlock_irq(&phba->hbalock);
1914                 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1915         }
1916
1917         return;
1918 }
1919
1920 /**
1921  * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1922  * @phba: pointer to lpfc hba data structure.
1923  * @new_fcf_record: pointer to fcf record.
1924  * @boot_flag: Indicates if this record used by boot bios.
1925  * @addr_mode: The address mode to be used by this FCF
1926  * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1927  *
1928  * This routine compare the fcf record with connect list obtained from the
1929  * config region to decide if this FCF can be used for SAN discovery. It returns
1930  * 1 if this record can be used for SAN discovery else return zero. If this FCF
1931  * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1932  * is used by boot bios and addr_mode will indicate the addressing mode to be
1933  * used for this FCF when the function returns.
1934  * If the FCF record need to be used with a particular vlan id, the vlan is
1935  * set in the vlan_id on return of the function. If not VLAN tagging need to
1936  * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
1937  **/
1938 static int
1939 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1940                         struct fcf_record *new_fcf_record,
1941                         uint32_t *boot_flag, uint32_t *addr_mode,
1942                         uint16_t *vlan_id)
1943 {
1944         struct lpfc_fcf_conn_entry *conn_entry;
1945         int i, j, fcf_vlan_id = 0;
1946
1947         /* Find the lowest VLAN id in the FCF record */
1948         for (i = 0; i < 512; i++) {
1949                 if (new_fcf_record->vlan_bitmap[i]) {
1950                         fcf_vlan_id = i * 8;
1951                         j = 0;
1952                         while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1953                                 j++;
1954                                 fcf_vlan_id++;
1955                         }
1956                         break;
1957                 }
1958         }
1959
1960         /* FCF not valid/available or solicitation in progress */
1961         if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1962             !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) ||
1963             bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record))
1964                 return 0;
1965
1966         if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1967                 *boot_flag = 0;
1968                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1969                                 new_fcf_record);
1970                 if (phba->valid_vlan)
1971                         *vlan_id = phba->vlan_id;
1972                 else
1973                         *vlan_id = LPFC_FCOE_NULL_VID;
1974                 return 1;
1975         }
1976
1977         /*
1978          * If there are no FCF connection table entry, driver connect to all
1979          * FCFs.
1980          */
1981         if (list_empty(&phba->fcf_conn_rec_list)) {
1982                 *boot_flag = 0;
1983                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1984                         new_fcf_record);
1985
1986                 /*
1987                  * When there are no FCF connect entries, use driver's default
1988                  * addressing mode - FPMA.
1989                  */
1990                 if (*addr_mode & LPFC_FCF_FPMA)
1991                         *addr_mode = LPFC_FCF_FPMA;
1992
1993                 /* If FCF record report a vlan id use that vlan id */
1994                 if (fcf_vlan_id)
1995                         *vlan_id = fcf_vlan_id;
1996                 else
1997                         *vlan_id = LPFC_FCOE_NULL_VID;
1998                 return 1;
1999         }
2000
2001         list_for_each_entry(conn_entry,
2002                             &phba->fcf_conn_rec_list, list) {
2003                 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
2004                         continue;
2005
2006                 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
2007                         !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
2008                                              new_fcf_record))
2009                         continue;
2010                 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
2011                         !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
2012                                             new_fcf_record))
2013                         continue;
2014                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
2015                         /*
2016                          * If the vlan bit map does not have the bit set for the
2017                          * vlan id to be used, then it is not a match.
2018                          */
2019                         if (!(new_fcf_record->vlan_bitmap
2020                                 [conn_entry->conn_rec.vlan_tag / 8] &
2021                                 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
2022                                 continue;
2023                 }
2024
2025                 /*
2026                  * If connection record does not support any addressing mode,
2027                  * skip the FCF record.
2028                  */
2029                 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
2030                         & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
2031                         continue;
2032
2033                 /*
2034                  * Check if the connection record specifies a required
2035                  * addressing mode.
2036                  */
2037                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2038                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
2039
2040                         /*
2041                          * If SPMA required but FCF not support this continue.
2042                          */
2043                         if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2044                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
2045                                         new_fcf_record) & LPFC_FCF_SPMA))
2046                                 continue;
2047
2048                         /*
2049                          * If FPMA required but FCF not support this continue.
2050                          */
2051                         if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2052                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
2053                                 new_fcf_record) & LPFC_FCF_FPMA))
2054                                 continue;
2055                 }
2056
2057                 /*
2058                  * This fcf record matches filtering criteria.
2059                  */
2060                 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
2061                         *boot_flag = 1;
2062                 else
2063                         *boot_flag = 0;
2064
2065                 /*
2066                  * If user did not specify any addressing mode, or if the
2067                  * preferred addressing mode specified by user is not supported
2068                  * by FCF, allow fabric to pick the addressing mode.
2069                  */
2070                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
2071                                 new_fcf_record);
2072                 /*
2073                  * If the user specified a required address mode, assign that
2074                  * address mode
2075                  */
2076                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2077                         (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
2078                         *addr_mode = (conn_entry->conn_rec.flags &
2079                                 FCFCNCT_AM_SPMA) ?
2080                                 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
2081                 /*
2082                  * If the user specified a preferred address mode, use the
2083                  * addr mode only if FCF support the addr_mode.
2084                  */
2085                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2086                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
2087                         (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2088                         (*addr_mode & LPFC_FCF_SPMA))
2089                                 *addr_mode = LPFC_FCF_SPMA;
2090                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2091                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
2092                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2093                         (*addr_mode & LPFC_FCF_FPMA))
2094                                 *addr_mode = LPFC_FCF_FPMA;
2095
2096                 /* If matching connect list has a vlan id, use it */
2097                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
2098                         *vlan_id = conn_entry->conn_rec.vlan_tag;
2099                 /*
2100                  * If no vlan id is specified in connect list, use the vlan id
2101                  * in the FCF record
2102                  */
2103                 else if (fcf_vlan_id)
2104                         *vlan_id = fcf_vlan_id;
2105                 else
2106                         *vlan_id = LPFC_FCOE_NULL_VID;
2107
2108                 return 1;
2109         }
2110
2111         return 0;
2112 }
2113
2114 /**
2115  * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
2116  * @phba: pointer to lpfc hba data structure.
2117  * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
2118  *
2119  * This function check if there is any fcoe event pending while driver
2120  * scan FCF entries. If there is any pending event, it will restart the
2121  * FCF saning and return 1 else return 0.
2122  */
2123 int
2124 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
2125 {
2126         /*
2127          * If the Link is up and no FCoE events while in the
2128          * FCF discovery, no need to restart FCF discovery.
2129          */
2130         if ((phba->link_state  >= LPFC_LINK_UP) &&
2131             (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
2132                 return 0;
2133
2134         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2135                         "2768 Pending link or FCF event during current "
2136                         "handling of the previous event: link_state:x%x, "
2137                         "evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
2138                         phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
2139                         phba->fcoe_eventtag);
2140
2141         spin_lock_irq(&phba->hbalock);
2142         phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
2143         spin_unlock_irq(&phba->hbalock);
2144
2145         if (phba->link_state >= LPFC_LINK_UP) {
2146                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
2147                                 "2780 Restart FCF table scan due to "
2148                                 "pending FCF event:evt_tag_at_scan:x%x, "
2149                                 "evt_tag_current:x%x\n",
2150                                 phba->fcoe_eventtag_at_fcf_scan,
2151                                 phba->fcoe_eventtag);
2152                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
2153         } else {
2154                 /*
2155                  * Do not continue FCF discovery and clear FCF_TS_INPROG
2156                  * flag
2157                  */
2158                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
2159                                 "2833 Stop FCF discovery process due to link "
2160                                 "state change (x%x)\n", phba->link_state);
2161                 spin_lock_irq(&phba->hbalock);
2162                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
2163                 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
2164                 spin_unlock_irq(&phba->hbalock);
2165         }
2166
2167         /* Unregister the currently registered FCF if required */
2168         if (unreg_fcf) {
2169                 spin_lock_irq(&phba->hbalock);
2170                 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
2171                 spin_unlock_irq(&phba->hbalock);
2172                 lpfc_sli4_unregister_fcf(phba);
2173         }
2174         return 1;
2175 }
2176
2177 /**
2178  * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
2179  * @phba: pointer to lpfc hba data structure.
2180  * @fcf_cnt: number of eligible fcf record seen so far.
2181  *
2182  * This function makes an running random selection decision on FCF record to
2183  * use through a sequence of @fcf_cnt eligible FCF records with equal
2184  * probability. To perform integer manunipulation of random numbers with
2185  * size unit32_t, a 16-bit random number returned from get_random_u16() is
2186  * taken as the random random number generated.
2187  *
2188  * Returns true when outcome is for the newly read FCF record should be
2189  * chosen; otherwise, return false when outcome is for keeping the previously
2190  * chosen FCF record.
2191  **/
2192 static bool
2193 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
2194 {
2195         uint32_t rand_num;
2196
2197         /* Get 16-bit uniform random number */
2198         rand_num = get_random_u16();
2199
2200         /* Decision with probability 1/fcf_cnt */
2201         if ((fcf_cnt * rand_num) < 0xFFFF)
2202                 return true;
2203         else
2204                 return false;
2205 }
2206
2207 /**
2208  * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
2209  * @phba: pointer to lpfc hba data structure.
2210  * @mboxq: pointer to mailbox object.
2211  * @next_fcf_index: pointer to holder of next fcf index.
2212  *
2213  * This routine parses the non-embedded fcf mailbox command by performing the
2214  * necessarily error checking, non-embedded read FCF record mailbox command
2215  * SGE parsing, and endianness swapping.
2216  *
2217  * Returns the pointer to the new FCF record in the non-embedded mailbox
2218  * command DMA memory if successfully, other NULL.
2219  */
2220 static struct fcf_record *
2221 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
2222                              uint16_t *next_fcf_index)
2223 {
2224         void *virt_addr;
2225         struct lpfc_mbx_sge sge;
2226         struct lpfc_mbx_read_fcf_tbl *read_fcf;
2227         uint32_t shdr_status, shdr_add_status, if_type;
2228         union lpfc_sli4_cfg_shdr *shdr;
2229         struct fcf_record *new_fcf_record;
2230
2231         /* Get the first SGE entry from the non-embedded DMA memory. This
2232          * routine only uses a single SGE.
2233          */
2234         lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
2235         if (unlikely(!mboxq->sge_array)) {
2236                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2237                                 "2524 Failed to get the non-embedded SGE "
2238                                 "virtual address\n");
2239                 return NULL;
2240         }
2241         virt_addr = mboxq->sge_array->addr[0];
2242
2243         shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
2244         lpfc_sli_pcimem_bcopy(shdr, shdr,
2245                               sizeof(union lpfc_sli4_cfg_shdr));
2246         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
2247         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
2248         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
2249         if (shdr_status || shdr_add_status) {
2250                 if (shdr_status == STATUS_FCF_TABLE_EMPTY ||
2251                                         if_type == LPFC_SLI_INTF_IF_TYPE_2)
2252                         lpfc_printf_log(phba, KERN_ERR,
2253                                         LOG_TRACE_EVENT,
2254                                         "2726 READ_FCF_RECORD Indicates empty "
2255                                         "FCF table.\n");
2256                 else
2257                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2258                                         "2521 READ_FCF_RECORD mailbox failed "
2259                                         "with status x%x add_status x%x, "
2260                                         "mbx\n", shdr_status, shdr_add_status);
2261                 return NULL;
2262         }
2263
2264         /* Interpreting the returned information of the FCF record */
2265         read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
2266         lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
2267                               sizeof(struct lpfc_mbx_read_fcf_tbl));
2268         *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
2269         new_fcf_record = (struct fcf_record *)(virt_addr +
2270                           sizeof(struct lpfc_mbx_read_fcf_tbl));
2271         lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
2272                                 offsetof(struct fcf_record, vlan_bitmap));
2273         new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
2274         new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
2275
2276         return new_fcf_record;
2277 }
2278
2279 /**
2280  * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
2281  * @phba: pointer to lpfc hba data structure.
2282  * @fcf_record: pointer to the fcf record.
2283  * @vlan_id: the lowest vlan identifier associated to this fcf record.
2284  * @next_fcf_index: the index to the next fcf record in hba's fcf table.
2285  *
2286  * This routine logs the detailed FCF record if the LOG_FIP loggin is
2287  * enabled.
2288  **/
2289 static void
2290 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
2291                               struct fcf_record *fcf_record,
2292                               uint16_t vlan_id,
2293                               uint16_t next_fcf_index)
2294 {
2295         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2296                         "2764 READ_FCF_RECORD:\n"
2297                         "\tFCF_Index     : x%x\n"
2298                         "\tFCF_Avail     : x%x\n"
2299                         "\tFCF_Valid     : x%x\n"
2300                         "\tFCF_SOL       : x%x\n"
2301                         "\tFIP_Priority  : x%x\n"
2302                         "\tMAC_Provider  : x%x\n"
2303                         "\tLowest VLANID : x%x\n"
2304                         "\tFCF_MAC Addr  : x%x:%x:%x:%x:%x:%x\n"
2305                         "\tFabric_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
2306                         "\tSwitch_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
2307                         "\tNext_FCF_Index: x%x\n",
2308                         bf_get(lpfc_fcf_record_fcf_index, fcf_record),
2309                         bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
2310                         bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
2311                         bf_get(lpfc_fcf_record_fcf_sol, fcf_record),
2312                         fcf_record->fip_priority,
2313                         bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
2314                         vlan_id,
2315                         bf_get(lpfc_fcf_record_mac_0, fcf_record),
2316                         bf_get(lpfc_fcf_record_mac_1, fcf_record),
2317                         bf_get(lpfc_fcf_record_mac_2, fcf_record),
2318                         bf_get(lpfc_fcf_record_mac_3, fcf_record),
2319                         bf_get(lpfc_fcf_record_mac_4, fcf_record),
2320                         bf_get(lpfc_fcf_record_mac_5, fcf_record),
2321                         bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
2322                         bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
2323                         bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
2324                         bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
2325                         bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
2326                         bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
2327                         bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
2328                         bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
2329                         bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
2330                         bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
2331                         bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
2332                         bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
2333                         bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
2334                         bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
2335                         bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
2336                         bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
2337                         next_fcf_index);
2338 }
2339
2340 /**
2341  * lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
2342  * @phba: pointer to lpfc hba data structure.
2343  * @fcf_rec: pointer to an existing FCF record.
2344  * @new_fcf_record: pointer to a new FCF record.
2345  * @new_vlan_id: vlan id from the new FCF record.
2346  *
2347  * This function performs matching test of a new FCF record against an existing
2348  * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
2349  * will not be used as part of the FCF record matching criteria.
2350  *
2351  * Returns true if all the fields matching, otherwise returns false.
2352  */
2353 static bool
2354 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
2355                            struct lpfc_fcf_rec *fcf_rec,
2356                            struct fcf_record *new_fcf_record,
2357                            uint16_t new_vlan_id)
2358 {
2359         if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
2360                 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
2361                         return false;
2362         if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
2363                 return false;
2364         if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
2365                 return false;
2366         if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
2367                 return false;
2368         if (fcf_rec->priority != new_fcf_record->fip_priority)
2369                 return false;
2370         return true;
2371 }
2372
2373 /**
2374  * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf
2375  * @vport: Pointer to vport object.
2376  * @fcf_index: index to next fcf.
2377  *
2378  * This function processing the roundrobin fcf failover to next fcf index.
2379  * When this function is invoked, there will be a current fcf registered
2380  * for flogi.
2381  * Return: 0 for continue retrying flogi on currently registered fcf;
2382  *         1 for stop flogi on currently registered fcf;
2383  */
2384 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index)
2385 {
2386         struct lpfc_hba *phba = vport->phba;
2387         int rc;
2388
2389         if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
2390                 spin_lock_irq(&phba->hbalock);
2391                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2392                         spin_unlock_irq(&phba->hbalock);
2393                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2394                                         "2872 Devloss tmo with no eligible "
2395                                         "FCF, unregister in-use FCF (x%x) "
2396                                         "and rescan FCF table\n",
2397                                         phba->fcf.current_rec.fcf_indx);
2398                         lpfc_unregister_fcf_rescan(phba);
2399                         goto stop_flogi_current_fcf;
2400                 }
2401                 /* Mark the end to FLOGI roundrobin failover */
2402                 phba->hba_flag &= ~FCF_RR_INPROG;
2403                 /* Allow action to new fcf asynchronous event */
2404                 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
2405                 spin_unlock_irq(&phba->hbalock);
2406                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2407                                 "2865 No FCF available, stop roundrobin FCF "
2408                                 "failover and change port state:x%x/x%x\n",
2409                                 phba->pport->port_state, LPFC_VPORT_UNKNOWN);
2410                 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
2411
2412                 if (!phba->fcf.fcf_redisc_attempted) {
2413                         lpfc_unregister_fcf(phba);
2414
2415                         rc = lpfc_sli4_redisc_fcf_table(phba);
2416                         if (!rc) {
2417                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2418                                                 "3195 Rediscover FCF table\n");
2419                                 phba->fcf.fcf_redisc_attempted = 1;
2420                                 lpfc_sli4_clear_fcf_rr_bmask(phba);
2421                         } else {
2422                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2423                                                 "3196 Rediscover FCF table "
2424                                                 "failed. Status:x%x\n", rc);
2425                         }
2426                 } else {
2427                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2428                                         "3197 Already rediscover FCF table "
2429                                         "attempted. No more retry\n");
2430                 }
2431                 goto stop_flogi_current_fcf;
2432         } else {
2433                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS,
2434                                 "2794 Try FLOGI roundrobin FCF failover to "
2435                                 "(x%x)\n", fcf_index);
2436                 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index);
2437                 if (rc)
2438                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
2439                                         "2761 FLOGI roundrobin FCF failover "
2440                                         "failed (rc:x%x) to read FCF (x%x)\n",
2441                                         rc, phba->fcf.current_rec.fcf_indx);
2442                 else
2443                         goto stop_flogi_current_fcf;
2444         }
2445         return 0;
2446
2447 stop_flogi_current_fcf:
2448         lpfc_can_disctmo(vport);
2449         return 1;
2450 }
2451
2452 /**
2453  * lpfc_sli4_fcf_pri_list_del
2454  * @phba: pointer to lpfc hba data structure.
2455  * @fcf_index: the index of the fcf record to delete
2456  * This routine checks the on list flag of the fcf_index to be deleted.
2457  * If it is one the list then it is removed from the list, and the flag
2458  * is cleared. This routine grab the hbalock before removing the fcf
2459  * record from the list.
2460  **/
2461 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba,
2462                         uint16_t fcf_index)
2463 {
2464         struct lpfc_fcf_pri *new_fcf_pri;
2465
2466         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2467         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2468                 "3058 deleting idx x%x pri x%x flg x%x\n",
2469                 fcf_index, new_fcf_pri->fcf_rec.priority,
2470                  new_fcf_pri->fcf_rec.flag);
2471         spin_lock_irq(&phba->hbalock);
2472         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) {
2473                 if (phba->fcf.current_rec.priority ==
2474                                 new_fcf_pri->fcf_rec.priority)
2475                         phba->fcf.eligible_fcf_cnt--;
2476                 list_del_init(&new_fcf_pri->list);
2477                 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST;
2478         }
2479         spin_unlock_irq(&phba->hbalock);
2480 }
2481
2482 /**
2483  * lpfc_sli4_set_fcf_flogi_fail
2484  * @phba: pointer to lpfc hba data structure.
2485  * @fcf_index: the index of the fcf record to update
2486  * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED
2487  * flag so the round robin selection for the particular priority level
2488  * will try a different fcf record that does not have this bit set.
2489  * If the fcf record is re-read for any reason this flag is cleared brfore
2490  * adding it to the priority list.
2491  **/
2492 void
2493 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index)
2494 {
2495         struct lpfc_fcf_pri *new_fcf_pri;
2496         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2497         spin_lock_irq(&phba->hbalock);
2498         new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED;
2499         spin_unlock_irq(&phba->hbalock);
2500 }
2501
2502 /**
2503  * lpfc_sli4_fcf_pri_list_add
2504  * @phba: pointer to lpfc hba data structure.
2505  * @fcf_index: the index of the fcf record to add
2506  * @new_fcf_record: pointer to a new FCF record.
2507  * This routine checks the priority of the fcf_index to be added.
2508  * If it is a lower priority than the current head of the fcf_pri list
2509  * then it is added to the list in the right order.
2510  * If it is the same priority as the current head of the list then it
2511  * is added to the head of the list and its bit in the rr_bmask is set.
2512  * If the fcf_index to be added is of a higher priority than the current
2513  * head of the list then the rr_bmask is cleared, its bit is set in the
2514  * rr_bmask and it is added to the head of the list.
2515  * returns:
2516  * 0=success 1=failure
2517  **/
2518 static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba,
2519         uint16_t fcf_index,
2520         struct fcf_record *new_fcf_record)
2521 {
2522         uint16_t current_fcf_pri;
2523         uint16_t last_index;
2524         struct lpfc_fcf_pri *fcf_pri;
2525         struct lpfc_fcf_pri *next_fcf_pri;
2526         struct lpfc_fcf_pri *new_fcf_pri;
2527         int ret;
2528
2529         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2530         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2531                 "3059 adding idx x%x pri x%x flg x%x\n",
2532                 fcf_index, new_fcf_record->fip_priority,
2533                  new_fcf_pri->fcf_rec.flag);
2534         spin_lock_irq(&phba->hbalock);
2535         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST)
2536                 list_del_init(&new_fcf_pri->list);
2537         new_fcf_pri->fcf_rec.fcf_index = fcf_index;
2538         new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
2539         if (list_empty(&phba->fcf.fcf_pri_list)) {
2540                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2541                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2542                                 new_fcf_pri->fcf_rec.fcf_index);
2543                 goto out;
2544         }
2545
2546         last_index = find_first_bit(phba->fcf.fcf_rr_bmask,
2547                                 LPFC_SLI4_FCF_TBL_INDX_MAX);
2548         if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
2549                 ret = 0; /* Empty rr list */
2550                 goto out;
2551         }
2552         current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority;
2553         if (new_fcf_pri->fcf_rec.priority <=  current_fcf_pri) {
2554                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2555                 if (new_fcf_pri->fcf_rec.priority <  current_fcf_pri) {
2556                         memset(phba->fcf.fcf_rr_bmask, 0,
2557                                 sizeof(*phba->fcf.fcf_rr_bmask));
2558                         /* fcfs_at_this_priority_level = 1; */
2559                         phba->fcf.eligible_fcf_cnt = 1;
2560                 } else
2561                         /* fcfs_at_this_priority_level++; */
2562                         phba->fcf.eligible_fcf_cnt++;
2563                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2564                                 new_fcf_pri->fcf_rec.fcf_index);
2565                 goto out;
2566         }
2567
2568         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
2569                                 &phba->fcf.fcf_pri_list, list) {
2570                 if (new_fcf_pri->fcf_rec.priority <=
2571                                 fcf_pri->fcf_rec.priority) {
2572                         if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list)
2573                                 list_add(&new_fcf_pri->list,
2574                                                 &phba->fcf.fcf_pri_list);
2575                         else
2576                                 list_add(&new_fcf_pri->list,
2577                                          &((struct lpfc_fcf_pri *)
2578                                         fcf_pri->list.prev)->list);
2579                         ret = 0;
2580                         goto out;
2581                 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list
2582                         || new_fcf_pri->fcf_rec.priority <
2583                                 next_fcf_pri->fcf_rec.priority) {
2584                         list_add(&new_fcf_pri->list, &fcf_pri->list);
2585                         ret = 0;
2586                         goto out;
2587                 }
2588                 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority)
2589                         continue;
2590
2591         }
2592         ret = 1;
2593 out:
2594         /* we use = instead of |= to clear the FLOGI_FAILED flag. */
2595         new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST;
2596         spin_unlock_irq(&phba->hbalock);
2597         return ret;
2598 }
2599
2600 /**
2601  * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
2602  * @phba: pointer to lpfc hba data structure.
2603  * @mboxq: pointer to mailbox object.
2604  *
2605  * This function iterates through all the fcf records available in
2606  * HBA and chooses the optimal FCF record for discovery. After finding
2607  * the FCF for discovery it registers the FCF record and kicks start
2608  * discovery.
2609  * If FCF_IN_USE flag is set in currently used FCF, the routine tries to
2610  * use an FCF record which matches fabric name and mac address of the
2611  * currently used FCF record.
2612  * If the driver supports only one FCF, it will try to use the FCF record
2613  * used by BOOT_BIOS.
2614  */
2615 void
2616 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2617 {
2618         struct fcf_record *new_fcf_record;
2619         uint32_t boot_flag, addr_mode;
2620         uint16_t fcf_index, next_fcf_index;
2621         struct lpfc_fcf_rec *fcf_rec = NULL;
2622         uint16_t vlan_id = LPFC_FCOE_NULL_VID;
2623         bool select_new_fcf;
2624         int rc;
2625
2626         /* If there is pending FCoE event restart FCF table scan */
2627         if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) {
2628                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2629                 return;
2630         }
2631
2632         /* Parse the FCF record from the non-embedded mailbox command */
2633         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2634                                                       &next_fcf_index);
2635         if (!new_fcf_record) {
2636                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2637                                 "2765 Mailbox command READ_FCF_RECORD "
2638                                 "failed to retrieve a FCF record.\n");
2639                 /* Let next new FCF event trigger fast failover */
2640                 spin_lock_irq(&phba->hbalock);
2641                 phba->hba_flag &= ~FCF_TS_INPROG;
2642                 spin_unlock_irq(&phba->hbalock);
2643                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2644                 return;
2645         }
2646
2647         /* Check the FCF record against the connection list */
2648         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2649                                       &addr_mode, &vlan_id);
2650
2651         /* Log the FCF record information if turned on */
2652         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2653                                       next_fcf_index);
2654
2655         /*
2656          * If the fcf record does not match with connect list entries
2657          * read the next entry; otherwise, this is an eligible FCF
2658          * record for roundrobin FCF failover.
2659          */
2660         if (!rc) {
2661                 lpfc_sli4_fcf_pri_list_del(phba,
2662                                         bf_get(lpfc_fcf_record_fcf_index,
2663                                                new_fcf_record));
2664                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2665                                 "2781 FCF (x%x) failed connection "
2666                                 "list check: (x%x/x%x/%x)\n",
2667                                 bf_get(lpfc_fcf_record_fcf_index,
2668                                        new_fcf_record),
2669                                 bf_get(lpfc_fcf_record_fcf_avail,
2670                                        new_fcf_record),
2671                                 bf_get(lpfc_fcf_record_fcf_valid,
2672                                        new_fcf_record),
2673                                 bf_get(lpfc_fcf_record_fcf_sol,
2674                                        new_fcf_record));
2675                 if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
2676                     lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2677                     new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
2678                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) !=
2679                             phba->fcf.current_rec.fcf_indx) {
2680                                 lpfc_printf_log(phba, KERN_ERR,
2681                                                 LOG_TRACE_EVENT,
2682                                         "2862 FCF (x%x) matches property "
2683                                         "of in-use FCF (x%x)\n",
2684                                         bf_get(lpfc_fcf_record_fcf_index,
2685                                                new_fcf_record),
2686                                         phba->fcf.current_rec.fcf_indx);
2687                                 goto read_next_fcf;
2688                         }
2689                         /*
2690                          * In case the current in-use FCF record becomes
2691                          * invalid/unavailable during FCF discovery that
2692                          * was not triggered by fast FCF failover process,
2693                          * treat it as fast FCF failover.
2694                          */
2695                         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
2696                             !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2697                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2698                                                 "2835 Invalid in-use FCF "
2699                                                 "(x%x), enter FCF failover "
2700                                                 "table scan.\n",
2701                                                 phba->fcf.current_rec.fcf_indx);
2702                                 spin_lock_irq(&phba->hbalock);
2703                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2704                                 spin_unlock_irq(&phba->hbalock);
2705                                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2706                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2707                                                 LPFC_FCOE_FCF_GET_FIRST);
2708                                 return;
2709                         }
2710                 }
2711                 goto read_next_fcf;
2712         } else {
2713                 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2714                 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index,
2715                                                         new_fcf_record);
2716                 if (rc)
2717                         goto read_next_fcf;
2718         }
2719
2720         /*
2721          * If this is not the first FCF discovery of the HBA, use last
2722          * FCF record for the discovery. The condition that a rescan
2723          * matches the in-use FCF record: fabric name, switch name, mac
2724          * address, and vlan_id.
2725          */
2726         spin_lock_irq(&phba->hbalock);
2727         if (phba->fcf.fcf_flag & FCF_IN_USE) {
2728                 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2729                         lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2730                     new_fcf_record, vlan_id)) {
2731                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) ==
2732                             phba->fcf.current_rec.fcf_indx) {
2733                                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2734                                 if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
2735                                         /* Stop FCF redisc wait timer */
2736                                         __lpfc_sli4_stop_fcf_redisc_wait_timer(
2737                                                                         phba);
2738                                 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2739                                         /* Fast failover, mark completed */
2740                                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2741                                 spin_unlock_irq(&phba->hbalock);
2742                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2743                                                 "2836 New FCF matches in-use "
2744                                                 "FCF (x%x), port_state:x%x, "
2745                                                 "fc_flag:x%x\n",
2746                                                 phba->fcf.current_rec.fcf_indx,
2747                                                 phba->pport->port_state,
2748                                                 phba->pport->fc_flag);
2749                                 goto out;
2750                         } else
2751                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2752                                         "2863 New FCF (x%x) matches "
2753                                         "property of in-use FCF (x%x)\n",
2754                                         bf_get(lpfc_fcf_record_fcf_index,
2755                                                new_fcf_record),
2756                                         phba->fcf.current_rec.fcf_indx);
2757                 }
2758                 /*
2759                  * Read next FCF record from HBA searching for the matching
2760                  * with in-use record only if not during the fast failover
2761                  * period. In case of fast failover period, it shall try to
2762                  * determine whether the FCF record just read should be the
2763                  * next candidate.
2764                  */
2765                 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2766                         spin_unlock_irq(&phba->hbalock);
2767                         goto read_next_fcf;
2768                 }
2769         }
2770         /*
2771          * Update on failover FCF record only if it's in FCF fast-failover
2772          * period; otherwise, update on current FCF record.
2773          */
2774         if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2775                 fcf_rec = &phba->fcf.failover_rec;
2776         else
2777                 fcf_rec = &phba->fcf.current_rec;
2778
2779         if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
2780                 /*
2781                  * If the driver FCF record does not have boot flag
2782                  * set and new hba fcf record has boot flag set, use
2783                  * the new hba fcf record.
2784                  */
2785                 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
2786                         /* Choose this FCF record */
2787                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2788                                         "2837 Update current FCF record "
2789                                         "(x%x) with new FCF record (x%x)\n",
2790                                         fcf_rec->fcf_indx,
2791                                         bf_get(lpfc_fcf_record_fcf_index,
2792                                         new_fcf_record));
2793                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2794                                         addr_mode, vlan_id, BOOT_ENABLE);
2795                         spin_unlock_irq(&phba->hbalock);
2796                         goto read_next_fcf;
2797                 }
2798                 /*
2799                  * If the driver FCF record has boot flag set and the
2800                  * new hba FCF record does not have boot flag, read
2801                  * the next FCF record.
2802                  */
2803                 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
2804                         spin_unlock_irq(&phba->hbalock);
2805                         goto read_next_fcf;
2806                 }
2807                 /*
2808                  * If the new hba FCF record has lower priority value
2809                  * than the driver FCF record, use the new record.
2810                  */
2811                 if (new_fcf_record->fip_priority < fcf_rec->priority) {
2812                         /* Choose the new FCF record with lower priority */
2813                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2814                                         "2838 Update current FCF record "
2815                                         "(x%x) with new FCF record (x%x)\n",
2816                                         fcf_rec->fcf_indx,
2817                                         bf_get(lpfc_fcf_record_fcf_index,
2818                                                new_fcf_record));
2819                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2820                                         addr_mode, vlan_id, 0);
2821                         /* Reset running random FCF selection count */
2822                         phba->fcf.eligible_fcf_cnt = 1;
2823                 } else if (new_fcf_record->fip_priority == fcf_rec->priority) {
2824                         /* Update running random FCF selection count */
2825                         phba->fcf.eligible_fcf_cnt++;
2826                         select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
2827                                                 phba->fcf.eligible_fcf_cnt);
2828                         if (select_new_fcf) {
2829                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2830                                         "2839 Update current FCF record "
2831                                         "(x%x) with new FCF record (x%x)\n",
2832                                         fcf_rec->fcf_indx,
2833                                         bf_get(lpfc_fcf_record_fcf_index,
2834                                                new_fcf_record));
2835                                 /* Choose the new FCF by random selection */
2836                                 __lpfc_update_fcf_record(phba, fcf_rec,
2837                                                          new_fcf_record,
2838                                                          addr_mode, vlan_id, 0);
2839                         }
2840                 }
2841                 spin_unlock_irq(&phba->hbalock);
2842                 goto read_next_fcf;
2843         }
2844         /*
2845          * This is the first suitable FCF record, choose this record for
2846          * initial best-fit FCF.
2847          */
2848         if (fcf_rec) {
2849                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2850                                 "2840 Update initial FCF candidate "
2851                                 "with FCF (x%x)\n",
2852                                 bf_get(lpfc_fcf_record_fcf_index,
2853                                        new_fcf_record));
2854                 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2855                                          addr_mode, vlan_id, (boot_flag ?
2856                                          BOOT_ENABLE : 0));
2857                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2858                 /* Setup initial running random FCF selection count */
2859                 phba->fcf.eligible_fcf_cnt = 1;
2860         }
2861         spin_unlock_irq(&phba->hbalock);
2862         goto read_next_fcf;
2863
2864 read_next_fcf:
2865         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2866         if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
2867                 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
2868                         /*
2869                          * Case of FCF fast failover scan
2870                          */
2871
2872                         /*
2873                          * It has not found any suitable FCF record, cancel
2874                          * FCF scan inprogress, and do nothing
2875                          */
2876                         if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
2877                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2878                                                "2782 No suitable FCF found: "
2879                                                "(x%x/x%x)\n",
2880                                                phba->fcoe_eventtag_at_fcf_scan,
2881                                                bf_get(lpfc_fcf_record_fcf_index,
2882                                                       new_fcf_record));
2883                                 spin_lock_irq(&phba->hbalock);
2884                                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2885                                         phba->hba_flag &= ~FCF_TS_INPROG;
2886                                         spin_unlock_irq(&phba->hbalock);
2887                                         /* Unregister in-use FCF and rescan */
2888                                         lpfc_printf_log(phba, KERN_INFO,
2889                                                         LOG_FIP,
2890                                                         "2864 On devloss tmo "
2891                                                         "unreg in-use FCF and "
2892                                                         "rescan FCF table\n");
2893                                         lpfc_unregister_fcf_rescan(phba);
2894                                         return;
2895                                 }
2896                                 /*
2897                                  * Let next new FCF event trigger fast failover
2898                                  */
2899                                 phba->hba_flag &= ~FCF_TS_INPROG;
2900                                 spin_unlock_irq(&phba->hbalock);
2901                                 return;
2902                         }
2903                         /*
2904                          * It has found a suitable FCF record that is not
2905                          * the same as in-use FCF record, unregister the
2906                          * in-use FCF record, replace the in-use FCF record
2907                          * with the new FCF record, mark FCF fast failover
2908                          * completed, and then start register the new FCF
2909                          * record.
2910                          */
2911
2912                         /* Unregister the current in-use FCF record */
2913                         lpfc_unregister_fcf(phba);
2914
2915                         /* Replace in-use record with the new record */
2916                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2917                                         "2842 Replace in-use FCF (x%x) "
2918                                         "with failover FCF (x%x)\n",
2919                                         phba->fcf.current_rec.fcf_indx,
2920                                         phba->fcf.failover_rec.fcf_indx);
2921                         memcpy(&phba->fcf.current_rec,
2922                                &phba->fcf.failover_rec,
2923                                sizeof(struct lpfc_fcf_rec));
2924                         /*
2925                          * Mark the fast FCF failover rediscovery completed
2926                          * and the start of the first round of the roundrobin
2927                          * FCF failover.
2928                          */
2929                         spin_lock_irq(&phba->hbalock);
2930                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2931                         spin_unlock_irq(&phba->hbalock);
2932                         /* Register to the new FCF record */
2933                         lpfc_register_fcf(phba);
2934                 } else {
2935                         /*
2936                          * In case of transaction period to fast FCF failover,
2937                          * do nothing when search to the end of the FCF table.
2938                          */
2939                         if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
2940                             (phba->fcf.fcf_flag & FCF_REDISC_PEND))
2941                                 return;
2942
2943                         if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2944                                 phba->fcf.fcf_flag & FCF_IN_USE) {
2945                                 /*
2946                                  * In case the current in-use FCF record no
2947                                  * longer existed during FCF discovery that
2948                                  * was not triggered by fast FCF failover
2949                                  * process, treat it as fast FCF failover.
2950                                  */
2951                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2952                                                 "2841 In-use FCF record (x%x) "
2953                                                 "not reported, entering fast "
2954                                                 "FCF failover mode scanning.\n",
2955                                                 phba->fcf.current_rec.fcf_indx);
2956                                 spin_lock_irq(&phba->hbalock);
2957                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2958                                 spin_unlock_irq(&phba->hbalock);
2959                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2960                                                 LPFC_FCOE_FCF_GET_FIRST);
2961                                 return;
2962                         }
2963                         /* Register to the new FCF record */
2964                         lpfc_register_fcf(phba);
2965                 }
2966         } else
2967                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
2968         return;
2969
2970 out:
2971         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2972         lpfc_register_fcf(phba);
2973
2974         return;
2975 }
2976
2977 /**
2978  * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler
2979  * @phba: pointer to lpfc hba data structure.
2980  * @mboxq: pointer to mailbox object.
2981  *
2982  * This is the callback function for FLOGI failure roundrobin FCF failover
2983  * read FCF record mailbox command from the eligible FCF record bmask for
2984  * performing the failover. If the FCF read back is not valid/available, it
2985  * fails through to retrying FLOGI to the currently registered FCF again.
2986  * Otherwise, if the FCF read back is valid and available, it will set the
2987  * newly read FCF record to the failover FCF record, unregister currently
2988  * registered FCF record, copy the failover FCF record to the current
2989  * FCF record, and then register the current FCF record before proceeding
2990  * to trying FLOGI on the new failover FCF.
2991  */
2992 void
2993 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2994 {
2995         struct fcf_record *new_fcf_record;
2996         uint32_t boot_flag, addr_mode;
2997         uint16_t next_fcf_index, fcf_index;
2998         uint16_t current_fcf_index;
2999         uint16_t vlan_id = LPFC_FCOE_NULL_VID;
3000         int rc;
3001
3002         /* If link state is not up, stop the roundrobin failover process */
3003         if (phba->link_state < LPFC_LINK_UP) {
3004                 spin_lock_irq(&phba->hbalock);
3005                 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
3006                 phba->hba_flag &= ~FCF_RR_INPROG;
3007                 spin_unlock_irq(&phba->hbalock);
3008                 goto out;
3009         }
3010
3011         /* Parse the FCF record from the non-embedded mailbox command */
3012         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
3013                                                       &next_fcf_index);
3014         if (!new_fcf_record) {
3015                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
3016                                 "2766 Mailbox command READ_FCF_RECORD "
3017                                 "failed to retrieve a FCF record. "
3018                                 "hba_flg x%x fcf_flg x%x\n", phba->hba_flag,
3019                                 phba->fcf.fcf_flag);
3020                 lpfc_unregister_fcf_rescan(phba);
3021                 goto out;
3022         }
3023
3024         /* Get the needed parameters from FCF record */
3025         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
3026                                       &addr_mode, &vlan_id);
3027
3028         /* Log the FCF record information if turned on */
3029         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
3030                                       next_fcf_index);
3031
3032         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
3033         if (!rc) {
3034                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3035                                 "2848 Remove ineligible FCF (x%x) from "
3036                                 "from roundrobin bmask\n", fcf_index);
3037                 /* Clear roundrobin bmask bit for ineligible FCF */
3038                 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index);
3039                 /* Perform next round of roundrobin FCF failover */
3040                 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
3041                 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index);
3042                 if (rc)
3043                         goto out;
3044                 goto error_out;
3045         }
3046
3047         if (fcf_index == phba->fcf.current_rec.fcf_indx) {
3048                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3049                                 "2760 Perform FLOGI roundrobin FCF failover: "
3050                                 "FCF (x%x) back to FCF (x%x)\n",
3051                                 phba->fcf.current_rec.fcf_indx, fcf_index);
3052                 /* Wait 500 ms before retrying FLOGI to current FCF */
3053                 msleep(500);
3054                 lpfc_issue_init_vfi(phba->pport);
3055                 goto out;
3056         }
3057
3058         /* Upload new FCF record to the failover FCF record */
3059         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3060                         "2834 Update current FCF (x%x) with new FCF (x%x)\n",
3061                         phba->fcf.failover_rec.fcf_indx, fcf_index);
3062         spin_lock_irq(&phba->hbalock);
3063         __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
3064                                  new_fcf_record, addr_mode, vlan_id,
3065                                  (boot_flag ? BOOT_ENABLE : 0));
3066         spin_unlock_irq(&phba->hbalock);
3067
3068         current_fcf_index = phba->fcf.current_rec.fcf_indx;
3069
3070         /* Unregister the current in-use FCF record */
3071         lpfc_unregister_fcf(phba);
3072
3073         /* Replace in-use record with the new record */
3074         memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
3075                sizeof(struct lpfc_fcf_rec));
3076
3077         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3078                         "2783 Perform FLOGI roundrobin FCF failover: FCF "
3079                         "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index);
3080
3081 error_out:
3082         lpfc_register_fcf(phba);
3083 out:
3084         lpfc_sli4_mbox_cmd_free(phba, mboxq);
3085 }
3086
3087 /**
3088  * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
3089  * @phba: pointer to lpfc hba data structure.
3090  * @mboxq: pointer to mailbox object.
3091  *
3092  * This is the callback function of read FCF record mailbox command for
3093  * updating the eligible FCF bmask for FLOGI failure roundrobin FCF
3094  * failover when a new FCF event happened. If the FCF read back is
3095  * valid/available and it passes the connection list check, it updates
3096  * the bmask for the eligible FCF record for roundrobin failover.
3097  */
3098 void
3099 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3100 {
3101         struct fcf_record *new_fcf_record;
3102         uint32_t boot_flag, addr_mode;
3103         uint16_t fcf_index, next_fcf_index;
3104         uint16_t vlan_id =  LPFC_FCOE_NULL_VID;
3105         int rc;
3106
3107         /* If link state is not up, no need to proceed */
3108         if (phba->link_state < LPFC_LINK_UP)
3109                 goto out;
3110
3111         /* If FCF discovery period is over, no need to proceed */
3112         if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
3113                 goto out;
3114
3115         /* Parse the FCF record from the non-embedded mailbox command */
3116         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
3117                                                       &next_fcf_index);
3118         if (!new_fcf_record) {
3119                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3120                                 "2767 Mailbox command READ_FCF_RECORD "
3121                                 "failed to retrieve a FCF record.\n");
3122                 goto out;
3123         }
3124
3125         /* Check the connection list for eligibility */
3126         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
3127                                       &addr_mode, &vlan_id);
3128
3129         /* Log the FCF record information if turned on */
3130         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
3131                                       next_fcf_index);
3132
3133         if (!rc)
3134                 goto out;
3135
3136         /* Update the eligible FCF record index bmask */
3137         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
3138
3139         rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record);
3140
3141 out:
3142         lpfc_sli4_mbox_cmd_free(phba, mboxq);
3143 }
3144
3145 /**
3146  * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command.
3147  * @phba: pointer to lpfc hba data structure.
3148  * @mboxq: pointer to mailbox data structure.
3149  *
3150  * This function handles completion of init vfi mailbox command.
3151  */
3152 static void
3153 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3154 {
3155         struct lpfc_vport *vport = mboxq->vport;
3156
3157         /*
3158          * VFI not supported on interface type 0, just do the flogi
3159          * Also continue if the VFI is in use - just use the same one.
3160          */
3161         if (mboxq->u.mb.mbxStatus &&
3162             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
3163                         LPFC_SLI_INTF_IF_TYPE_0) &&
3164             mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
3165                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3166                                  "2891 Init VFI mailbox failed 0x%x\n",
3167                                  mboxq->u.mb.mbxStatus);
3168                 mempool_free(mboxq, phba->mbox_mem_pool);
3169                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3170                 return;
3171         }
3172
3173         lpfc_initial_flogi(vport);
3174         mempool_free(mboxq, phba->mbox_mem_pool);
3175         return;
3176 }
3177
3178 /**
3179  * lpfc_issue_init_vfi - Issue init_vfi mailbox command.
3180  * @vport: pointer to lpfc_vport data structure.
3181  *
3182  * This function issue a init_vfi mailbox command to initialize the VFI and
3183  * VPI for the physical port.
3184  */
3185 void
3186 lpfc_issue_init_vfi(struct lpfc_vport *vport)
3187 {
3188         LPFC_MBOXQ_t *mboxq;
3189         int rc;
3190         struct lpfc_hba *phba = vport->phba;
3191
3192         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3193         if (!mboxq) {
3194                 lpfc_printf_vlog(vport, KERN_ERR,
3195                         LOG_TRACE_EVENT, "2892 Failed to allocate "
3196                         "init_vfi mailbox\n");
3197                 return;
3198         }
3199         lpfc_init_vfi(mboxq, vport);
3200         mboxq->mbox_cmpl = lpfc_init_vfi_cmpl;
3201         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
3202         if (rc == MBX_NOT_FINISHED) {
3203                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3204                                  "2893 Failed to issue init_vfi mailbox\n");
3205                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
3206         }
3207 }
3208
3209 /**
3210  * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
3211  * @phba: pointer to lpfc hba data structure.
3212  * @mboxq: pointer to mailbox data structure.
3213  *
3214  * This function handles completion of init vpi mailbox command.
3215  */
3216 void
3217 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3218 {
3219         struct lpfc_vport *vport = mboxq->vport;
3220         struct lpfc_nodelist *ndlp;
3221         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3222
3223         if (mboxq->u.mb.mbxStatus) {
3224                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3225                                  "2609 Init VPI mailbox failed 0x%x\n",
3226                                  mboxq->u.mb.mbxStatus);
3227                 mempool_free(mboxq, phba->mbox_mem_pool);
3228                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3229                 return;
3230         }
3231         spin_lock_irq(shost->host_lock);
3232         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
3233         spin_unlock_irq(shost->host_lock);
3234
3235         /* If this port is physical port or FDISC is done, do reg_vpi */
3236         if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
3237                         ndlp = lpfc_findnode_did(vport, Fabric_DID);
3238                         if (!ndlp)
3239                                 lpfc_printf_vlog(vport, KERN_ERR,
3240                                         LOG_TRACE_EVENT,
3241                                         "2731 Cannot find fabric "
3242                                         "controller node\n");
3243                         else
3244                                 lpfc_register_new_vport(phba, vport, ndlp);
3245                         mempool_free(mboxq, phba->mbox_mem_pool);
3246                         return;
3247         }
3248
3249         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
3250                 lpfc_initial_fdisc(vport);
3251         else {
3252                 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
3253                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3254                                  "2606 No NPIV Fabric support\n");
3255         }
3256         mempool_free(mboxq, phba->mbox_mem_pool);
3257         return;
3258 }
3259
3260 /**
3261  * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
3262  * @vport: pointer to lpfc_vport data structure.
3263  *
3264  * This function issue a init_vpi mailbox command to initialize
3265  * VPI for the vport.
3266  */
3267 void
3268 lpfc_issue_init_vpi(struct lpfc_vport *vport)
3269 {
3270         LPFC_MBOXQ_t *mboxq;
3271         int rc, vpi;
3272
3273         if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) {
3274                 vpi = lpfc_alloc_vpi(vport->phba);
3275                 if (!vpi) {
3276                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3277                                          "3303 Failed to obtain vport vpi\n");
3278                         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3279                         return;
3280                 }
3281                 vport->vpi = vpi;
3282         }
3283
3284         mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
3285         if (!mboxq) {
3286                 lpfc_printf_vlog(vport, KERN_ERR,
3287                         LOG_TRACE_EVENT, "2607 Failed to allocate "
3288                         "init_vpi mailbox\n");
3289                 return;
3290         }
3291         lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
3292         mboxq->vport = vport;
3293         mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
3294         rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
3295         if (rc == MBX_NOT_FINISHED) {
3296                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3297                                  "2608 Failed to issue init_vpi mailbox\n");
3298                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
3299         }
3300 }
3301
3302 /**
3303  * lpfc_start_fdiscs - send fdiscs for each vports on this port.
3304  * @phba: pointer to lpfc hba data structure.
3305  *
3306  * This function loops through the list of vports on the @phba and issues an
3307  * FDISC if possible.
3308  */
3309 void
3310 lpfc_start_fdiscs(struct lpfc_hba *phba)
3311 {
3312         struct lpfc_vport **vports;
3313         int i;
3314
3315         vports = lpfc_create_vport_work_array(phba);
3316         if (vports != NULL) {
3317                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3318                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
3319                                 continue;
3320                         /* There are no vpi for this vport */
3321                         if (vports[i]->vpi > phba->max_vpi) {
3322                                 lpfc_vport_set_state(vports[i],
3323                                                      FC_VPORT_FAILED);
3324                                 continue;
3325                         }
3326                         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3327                                 lpfc_vport_set_state(vports[i],
3328                                                      FC_VPORT_LINKDOWN);
3329                                 continue;
3330                         }
3331                         if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
3332                                 lpfc_issue_init_vpi(vports[i]);
3333                                 continue;
3334                         }
3335                         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
3336                                 lpfc_initial_fdisc(vports[i]);
3337                         else {
3338                                 lpfc_vport_set_state(vports[i],
3339                                                      FC_VPORT_NO_FABRIC_SUPP);
3340                                 lpfc_printf_vlog(vports[i], KERN_ERR,
3341                                                  LOG_TRACE_EVENT,
3342                                                  "0259 No NPIV "
3343                                                  "Fabric support\n");
3344                         }
3345                 }
3346         }
3347         lpfc_destroy_vport_work_array(phba, vports);
3348 }
3349
3350 void
3351 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3352 {
3353         struct lpfc_vport *vport = mboxq->vport;
3354         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3355
3356         /*
3357          * VFI not supported for interface type 0, so ignore any mailbox
3358          * error (except VFI in use) and continue with the discovery.
3359          */
3360         if (mboxq->u.mb.mbxStatus &&
3361             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
3362                         LPFC_SLI_INTF_IF_TYPE_0) &&
3363             mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
3364                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3365                                  "2018 REG_VFI mbxStatus error x%x "
3366                                  "HBA state x%x\n",
3367                                  mboxq->u.mb.mbxStatus, vport->port_state);
3368                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3369                         /* FLOGI failed, use loop map to make discovery list */
3370                         lpfc_disc_list_loopmap(vport);
3371                         /* Start discovery */
3372                         lpfc_disc_start(vport);
3373                         goto out_free_mem;
3374                 }
3375                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3376                 goto out_free_mem;
3377         }
3378
3379         /* If the VFI is already registered, there is nothing else to do
3380          * Unless this was a VFI update and we are in PT2PT mode, then
3381          * we should drop through to set the port state to ready.
3382          */
3383         if (vport->fc_flag & FC_VFI_REGISTERED)
3384                 if (!(phba->sli_rev == LPFC_SLI_REV4 &&
3385                       vport->fc_flag & FC_PT2PT))
3386                         goto out_free_mem;
3387
3388         /* The VPI is implicitly registered when the VFI is registered */
3389         spin_lock_irq(shost->host_lock);
3390         vport->vpi_state |= LPFC_VPI_REGISTERED;
3391         vport->fc_flag |= FC_VFI_REGISTERED;
3392         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3393         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
3394         spin_unlock_irq(shost->host_lock);
3395
3396         /* In case SLI4 FC loopback test, we are ready */
3397         if ((phba->sli_rev == LPFC_SLI_REV4) &&
3398             (phba->link_flag & LS_LOOPBACK_MODE)) {
3399                 phba->link_state = LPFC_HBA_READY;
3400                 goto out_free_mem;
3401         }
3402
3403         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3404                          "3313 cmpl reg vfi  port_state:%x fc_flag:%x myDid:%x "
3405                          "alpacnt:%d LinkState:%x topology:%x\n",
3406                          vport->port_state, vport->fc_flag, vport->fc_myDID,
3407                          vport->phba->alpa_map[0],
3408                          phba->link_state, phba->fc_topology);
3409
3410         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3411                 /*
3412                  * For private loop or for NPort pt2pt,
3413                  * just start discovery and we are done.
3414                  */
3415                 if ((vport->fc_flag & FC_PT2PT) ||
3416                     ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) &&
3417                     !(vport->fc_flag & FC_PUBLIC_LOOP))) {
3418
3419                         /* Use loop map to make discovery list */
3420                         lpfc_disc_list_loopmap(vport);
3421                         /* Start discovery */
3422                         if (vport->fc_flag & FC_PT2PT)
3423                                 vport->port_state = LPFC_VPORT_READY;
3424                         else
3425                                 lpfc_disc_start(vport);
3426                 } else {
3427                         lpfc_start_fdiscs(phba);
3428                         lpfc_do_scr_ns_plogi(phba, vport);
3429                 }
3430         }
3431
3432 out_free_mem:
3433         lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED);
3434 }
3435
3436 static void
3437 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3438 {
3439         MAILBOX_t *mb = &pmb->u.mb;
3440         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3441         struct lpfc_vport  *vport = pmb->vport;
3442         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3443         struct serv_parm *sp = &vport->fc_sparam;
3444         uint32_t ed_tov;
3445
3446         /* Check for error */
3447         if (mb->mbxStatus) {
3448                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
3449                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3450                                  "0319 READ_SPARAM mbxStatus error x%x "
3451                                  "hba state x%x>\n",
3452                                  mb->mbxStatus, vport->port_state);
3453                 lpfc_linkdown(phba);
3454                 goto out;
3455         }
3456
3457         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
3458                sizeof (struct serv_parm));
3459
3460         ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
3461         if (sp->cmn.edtovResolution)    /* E_D_TOV ticks are in nanoseconds */
3462                 ed_tov = (ed_tov + 999999) / 1000000;
3463
3464         phba->fc_edtov = ed_tov;
3465         phba->fc_ratov = (2 * ed_tov) / 1000;
3466         if (phba->fc_ratov < FF_DEF_RATOV) {
3467                 /* RA_TOV should be atleast 10sec for initial flogi */
3468                 phba->fc_ratov = FF_DEF_RATOV;
3469         }
3470
3471         lpfc_update_vport_wwn(vport);
3472         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
3473         if (vport->port_type == LPFC_PHYSICAL_PORT) {
3474                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
3475                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
3476         }
3477
3478         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
3479
3480         /* Check if sending the FLOGI is being deferred to after we get
3481          * up to date CSPs from MBX_READ_SPARAM.
3482          */
3483         if (phba->hba_flag & HBA_DEFER_FLOGI) {
3484                 lpfc_initial_flogi(vport);
3485                 phba->hba_flag &= ~HBA_DEFER_FLOGI;
3486         }
3487         return;
3488
3489 out:
3490         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
3491         lpfc_issue_clear_la(phba, vport);
3492 }
3493
3494 static void
3495 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
3496 {
3497         struct lpfc_vport *vport = phba->pport;
3498         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
3499         struct Scsi_Host *shost;
3500         int i;
3501         int rc;
3502         struct fcf_record *fcf_record;
3503         uint32_t fc_flags = 0;
3504         unsigned long iflags;
3505
3506         spin_lock_irqsave(&phba->hbalock, iflags);
3507         phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la);
3508
3509         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3510                 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) {
3511                 case LPFC_LINK_SPEED_1GHZ:
3512                 case LPFC_LINK_SPEED_2GHZ:
3513                 case LPFC_LINK_SPEED_4GHZ:
3514                 case LPFC_LINK_SPEED_8GHZ:
3515                 case LPFC_LINK_SPEED_10GHZ:
3516                 case LPFC_LINK_SPEED_16GHZ:
3517                 case LPFC_LINK_SPEED_32GHZ:
3518                 case LPFC_LINK_SPEED_64GHZ:
3519                 case LPFC_LINK_SPEED_128GHZ:
3520                 case LPFC_LINK_SPEED_256GHZ:
3521                         break;
3522                 default:
3523                         phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN;
3524                         break;
3525                 }
3526         }
3527
3528         if (phba->fc_topology &&
3529             phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) {
3530                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
3531                                 "3314 Toplogy changed was 0x%x is 0x%x\n",
3532                                 phba->fc_topology,
3533                                 bf_get(lpfc_mbx_read_top_topology, la));
3534                 phba->fc_topology_changed = 1;
3535         }
3536
3537         phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la);
3538         phba->link_flag &= ~(LS_NPIV_FAB_SUPPORTED | LS_CT_VEN_RPA);
3539
3540         shost = lpfc_shost_from_vport(vport);
3541         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3542                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
3543
3544                 /* if npiv is enabled and this adapter supports npiv log
3545                  * a message that npiv is not supported in this topology
3546                  */
3547                 if (phba->cfg_enable_npiv && phba->max_vpi)
3548                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3549                                 "1309 Link Up Event npiv not supported in loop "
3550                                 "topology\n");
3551                                 /* Get Loop Map information */
3552                 if (bf_get(lpfc_mbx_read_top_il, la))
3553                         fc_flags |= FC_LBIT;
3554
3555                 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la);
3556                 i = la->lilpBde64.tus.f.bdeSize;
3557
3558                 if (i == 0) {
3559                         phba->alpa_map[0] = 0;
3560                 } else {
3561                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
3562                                 int numalpa, j, k;
3563                                 union {
3564                                         uint8_t pamap[16];
3565                                         struct {
3566                                                 uint32_t wd1;
3567                                                 uint32_t wd2;
3568                                                 uint32_t wd3;
3569                                                 uint32_t wd4;
3570                                         } pa;
3571                                 } un;
3572                                 numalpa = phba->alpa_map[0];
3573                                 j = 0;
3574                                 while (j < numalpa) {
3575                                         memset(un.pamap, 0, 16);
3576                                         for (k = 1; j < numalpa; k++) {
3577                                                 un.pamap[k - 1] =
3578                                                         phba->alpa_map[j + 1];
3579                                                 j++;
3580                                                 if (k == 16)
3581                                                         break;
3582                                         }
3583                                         /* Link Up Event ALPA map */
3584                                         lpfc_printf_log(phba,
3585                                                         KERN_WARNING,
3586                                                         LOG_LINK_EVENT,
3587                                                         "1304 Link Up Event "
3588                                                         "ALPA map Data: x%x "
3589                                                         "x%x x%x x%x\n",
3590                                                         un.pa.wd1, un.pa.wd2,
3591                                                         un.pa.wd3, un.pa.wd4);
3592                                 }
3593                         }
3594                 }
3595         } else {
3596                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
3597                         if (phba->max_vpi && phba->cfg_enable_npiv &&
3598                            (phba->sli_rev >= LPFC_SLI_REV3))
3599                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
3600                 }
3601                 vport->fc_myDID = phba->fc_pref_DID;
3602                 fc_flags |= FC_LBIT;
3603         }
3604         spin_unlock_irqrestore(&phba->hbalock, iflags);
3605
3606         if (fc_flags) {
3607                 spin_lock_irqsave(shost->host_lock, iflags);
3608                 vport->fc_flag |= fc_flags;
3609                 spin_unlock_irqrestore(shost->host_lock, iflags);
3610         }
3611
3612         lpfc_linkup(phba);
3613         sparam_mbox = NULL;
3614
3615         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3616         if (!sparam_mbox)
3617                 goto out;
3618
3619         rc = lpfc_read_sparam(phba, sparam_mbox, 0);
3620         if (rc) {
3621                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3622                 goto out;
3623         }
3624         sparam_mbox->vport = vport;
3625         sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
3626         rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
3627         if (rc == MBX_NOT_FINISHED) {
3628                 lpfc_mbox_rsrc_cleanup(phba, sparam_mbox, MBOX_THD_UNLOCKED);
3629                 goto out;
3630         }
3631
3632         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3633                 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3634                 if (!cfglink_mbox)
3635                         goto out;
3636                 vport->port_state = LPFC_LOCAL_CFG_LINK;
3637                 lpfc_config_link(phba, cfglink_mbox);
3638                 cfglink_mbox->vport = vport;
3639                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
3640                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
3641                 if (rc == MBX_NOT_FINISHED) {
3642                         mempool_free(cfglink_mbox, phba->mbox_mem_pool);
3643                         goto out;
3644                 }
3645         } else {
3646                 vport->port_state = LPFC_VPORT_UNKNOWN;
3647                 /*
3648                  * Add the driver's default FCF record at FCF index 0 now. This
3649                  * is phase 1 implementation that support FCF index 0 and driver
3650                  * defaults.
3651                  */
3652                 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
3653                         fcf_record = kzalloc(sizeof(struct fcf_record),
3654                                         GFP_KERNEL);
3655                         if (unlikely(!fcf_record)) {
3656                                 lpfc_printf_log(phba, KERN_ERR,
3657                                         LOG_TRACE_EVENT,
3658                                         "2554 Could not allocate memory for "
3659                                         "fcf record\n");
3660                                 rc = -ENODEV;
3661                                 goto out;
3662                         }
3663
3664                         lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
3665                                                 LPFC_FCOE_FCF_DEF_INDEX);
3666                         rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
3667                         if (unlikely(rc)) {
3668                                 lpfc_printf_log(phba, KERN_ERR,
3669                                         LOG_TRACE_EVENT,
3670                                         "2013 Could not manually add FCF "
3671                                         "record 0, status %d\n", rc);
3672                                 rc = -ENODEV;
3673                                 kfree(fcf_record);
3674                                 goto out;
3675                         }
3676                         kfree(fcf_record);
3677                 }
3678                 /*
3679                  * The driver is expected to do FIP/FCF. Call the port
3680                  * and get the FCF Table.
3681                  */
3682                 spin_lock_irqsave(&phba->hbalock, iflags);
3683                 if (phba->hba_flag & FCF_TS_INPROG) {
3684                         spin_unlock_irqrestore(&phba->hbalock, iflags);
3685                         return;
3686                 }
3687                 /* This is the initial FCF discovery scan */
3688                 phba->fcf.fcf_flag |= FCF_INIT_DISC;
3689                 spin_unlock_irqrestore(&phba->hbalock, iflags);
3690                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3691                                 "2778 Start FCF table scan at linkup\n");
3692                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
3693                                                      LPFC_FCOE_FCF_GET_FIRST);
3694                 if (rc) {
3695                         spin_lock_irqsave(&phba->hbalock, iflags);
3696                         phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
3697                         spin_unlock_irqrestore(&phba->hbalock, iflags);
3698                         goto out;
3699                 }
3700                 /* Reset FCF roundrobin bmask for new discovery */
3701                 lpfc_sli4_clear_fcf_rr_bmask(phba);
3702         }
3703
3704         /* Prepare for LINK up registrations */
3705         memset(phba->os_host_name, 0, sizeof(phba->os_host_name));
3706         scnprintf(phba->os_host_name, sizeof(phba->os_host_name), "%s",
3707                   init_utsname()->nodename);
3708         return;
3709 out:
3710         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3711         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3712                          "0263 Discovery Mailbox error: state: 0x%x : x%px x%px\n",
3713                          vport->port_state, sparam_mbox, cfglink_mbox);
3714         lpfc_issue_clear_la(phba, vport);
3715         return;
3716 }
3717
3718 static void
3719 lpfc_enable_la(struct lpfc_hba *phba)
3720 {
3721         uint32_t control;
3722         struct lpfc_sli *psli = &phba->sli;
3723         spin_lock_irq(&phba->hbalock);
3724         psli->sli_flag |= LPFC_PROCESS_LA;
3725         if (phba->sli_rev <= LPFC_SLI_REV3) {
3726                 control = readl(phba->HCregaddr);
3727                 control |= HC_LAINT_ENA;
3728                 writel(control, phba->HCregaddr);
3729                 readl(phba->HCregaddr); /* flush */
3730         }
3731         spin_unlock_irq(&phba->hbalock);
3732 }
3733
3734 static void
3735 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
3736 {
3737         lpfc_linkdown(phba);
3738         lpfc_enable_la(phba);
3739         lpfc_unregister_unused_fcf(phba);
3740         /* turn on Link Attention interrupts - no CLEAR_LA needed */
3741 }
3742
3743
3744 /*
3745  * This routine handles processing a READ_TOPOLOGY mailbox
3746  * command upon completion. It is setup in the LPFC_MBOXQ
3747  * as the completion routine when the command is
3748  * handed off to the SLI layer. SLI4 only.
3749  */
3750 void
3751 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3752 {
3753         struct lpfc_vport *vport = pmb->vport;
3754         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3755         struct lpfc_mbx_read_top *la;
3756         struct lpfc_sli_ring *pring;
3757         MAILBOX_t *mb = &pmb->u.mb;
3758         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
3759         uint8_t attn_type;
3760         unsigned long iflags;
3761
3762         /* Unblock ELS traffic */
3763         pring = lpfc_phba_elsring(phba);
3764         if (pring)
3765                 pring->flag &= ~LPFC_STOP_IOCB_EVENT;
3766
3767         /* Check for error */
3768         if (mb->mbxStatus) {
3769                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3770                                 "1307 READ_LA mbox error x%x state x%x\n",
3771                                 mb->mbxStatus, vport->port_state);
3772                 lpfc_mbx_issue_link_down(phba);
3773                 phba->link_state = LPFC_HBA_ERROR;
3774                 goto lpfc_mbx_cmpl_read_topology_free_mbuf;
3775         }
3776
3777         la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
3778         attn_type = bf_get(lpfc_mbx_read_top_att_type, la);
3779
3780         memcpy(&phba->alpa_map[0], mp->virt, 128);
3781
3782         spin_lock_irqsave(shost->host_lock, iflags);
3783         if (bf_get(lpfc_mbx_read_top_pb, la))
3784                 vport->fc_flag |= FC_BYPASSED_MODE;
3785         else
3786                 vport->fc_flag &= ~FC_BYPASSED_MODE;
3787         spin_unlock_irqrestore(shost->host_lock, iflags);
3788
3789         if (phba->fc_eventTag <= la->eventTag) {
3790                 phba->fc_stat.LinkMultiEvent++;
3791                 if (attn_type == LPFC_ATT_LINK_UP)
3792                         if (phba->fc_eventTag != 0)
3793                                 lpfc_linkdown(phba);
3794         }
3795
3796         phba->fc_eventTag = la->eventTag;
3797         phba->link_events++;
3798         if (attn_type == LPFC_ATT_LINK_UP) {
3799                 phba->fc_stat.LinkUp++;
3800                 if (phba->link_flag & LS_LOOPBACK_MODE) {
3801                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3802                                         "1306 Link Up Event in loop back mode "
3803                                         "x%x received Data: x%x x%x x%x x%x\n",
3804                                         la->eventTag, phba->fc_eventTag,
3805                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3806                                                la),
3807                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3808                                         phba->alpa_map[0]);
3809                 } else {
3810                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3811                                         "1303 Link Up Event x%x received "
3812                                         "Data: x%x x%x x%x x%x x%x\n",
3813                                         la->eventTag, phba->fc_eventTag,
3814                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3815                                                la),
3816                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3817                                         phba->alpa_map[0],
3818                                         bf_get(lpfc_mbx_read_top_fa, la));
3819                 }
3820                 lpfc_mbx_process_link_up(phba, la);
3821
3822                 if (phba->cmf_active_mode != LPFC_CFG_OFF)
3823                         lpfc_cmf_signal_init(phba);
3824
3825                 if (phba->lmt & LMT_64Gb)
3826                         lpfc_read_lds_params(phba);
3827
3828         } else if (attn_type == LPFC_ATT_LINK_DOWN ||
3829                    attn_type == LPFC_ATT_UNEXP_WWPN) {
3830                 phba->fc_stat.LinkDown++;
3831                 if (phba->link_flag & LS_LOOPBACK_MODE)
3832                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3833                                 "1308 Link Down Event in loop back mode "
3834                                 "x%x received "
3835                                 "Data: x%x x%x x%x\n",
3836                                 la->eventTag, phba->fc_eventTag,
3837                                 phba->pport->port_state, vport->fc_flag);
3838                 else if (attn_type == LPFC_ATT_UNEXP_WWPN)
3839                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3840                                 "1313 Link Down Unexpected FA WWPN Event x%x "
3841                                 "received Data: x%x x%x x%x x%x\n",
3842                                 la->eventTag, phba->fc_eventTag,
3843                                 phba->pport->port_state, vport->fc_flag,
3844                                 bf_get(lpfc_mbx_read_top_fa, la));
3845                 else
3846                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3847                                 "1305 Link Down Event x%x received "
3848                                 "Data: x%x x%x x%x x%x\n",
3849                                 la->eventTag, phba->fc_eventTag,
3850                                 phba->pport->port_state, vport->fc_flag,
3851                                 bf_get(lpfc_mbx_read_top_fa, la));
3852                 lpfc_mbx_issue_link_down(phba);
3853         }
3854
3855         if ((phba->sli_rev < LPFC_SLI_REV4) &&
3856             bf_get(lpfc_mbx_read_top_fa, la))
3857                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3858                                 "1311 fa %d\n",
3859                                 bf_get(lpfc_mbx_read_top_fa, la));
3860
3861 lpfc_mbx_cmpl_read_topology_free_mbuf:
3862         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
3863 }
3864
3865 /*
3866  * This routine handles processing a REG_LOGIN mailbox
3867  * command upon completion. It is setup in the LPFC_MBOXQ
3868  * as the completion routine when the command is
3869  * handed off to the SLI layer.
3870  */
3871 void
3872 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3873 {
3874         struct lpfc_vport  *vport = pmb->vport;
3875         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3876         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
3877
3878         /* The driver calls the state machine with the pmb pointer
3879          * but wants to make sure a stale ctx_buf isn't acted on.
3880          * The ctx_buf is restored later and cleaned up.
3881          */
3882         pmb->ctx_buf = NULL;
3883         pmb->ctx_ndlp = NULL;
3884
3885         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI | LOG_NODE | LOG_DISCOVERY,
3886                          "0002 rpi:%x DID:%x flg:%x %d x%px\n",
3887                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
3888                          kref_read(&ndlp->kref),
3889                          ndlp);
3890         if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
3891                 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
3892
3893         if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL ||
3894             ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
3895                 /* We rcvd a rscn after issuing this
3896                  * mbox reg login, we may have cycled
3897                  * back through the state and be
3898                  * back at reg login state so this
3899                  * mbox needs to be ignored becase
3900                  * there is another reg login in
3901                  * process.
3902                  */
3903                 spin_lock_irq(&ndlp->lock);
3904                 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
3905                 spin_unlock_irq(&ndlp->lock);
3906
3907                 /*
3908                  * We cannot leave the RPI registered because
3909                  * if we go thru discovery again for this ndlp
3910                  * a subsequent REG_RPI will fail.
3911                  */
3912                 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3913                 lpfc_unreg_rpi(vport, ndlp);
3914         }
3915
3916         /* Call state machine */
3917         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
3918         pmb->ctx_buf = mp;
3919         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
3920
3921         /* decrement the node reference count held for this callback
3922          * function.
3923          */
3924         lpfc_nlp_put(ndlp);
3925
3926         return;
3927 }
3928
3929 static void
3930 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3931 {
3932         MAILBOX_t *mb = &pmb->u.mb;
3933         struct lpfc_vport *vport = pmb->vport;
3934         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3935
3936         switch (mb->mbxStatus) {
3937         case 0x0011:
3938         case 0x0020:
3939                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3940                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
3941                                  mb->mbxStatus);
3942                 break;
3943         /* If VPI is busy, reset the HBA */
3944         case 0x9700:
3945                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3946                         "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n",
3947                         vport->vpi, mb->mbxStatus);
3948                 if (!(phba->pport->load_flag & FC_UNLOADING))
3949                         lpfc_workq_post_event(phba, NULL, NULL,
3950                                 LPFC_EVT_RESET_HBA);
3951         }
3952         spin_lock_irq(shost->host_lock);
3953         vport->vpi_state &= ~LPFC_VPI_REGISTERED;
3954         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3955         spin_unlock_irq(shost->host_lock);
3956         mempool_free(pmb, phba->mbox_mem_pool);
3957         lpfc_cleanup_vports_rrqs(vport, NULL);
3958         /*
3959          * This shost reference might have been taken at the beginning of
3960          * lpfc_vport_delete()
3961          */
3962         if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
3963                 scsi_host_put(shost);
3964 }
3965
3966 int
3967 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
3968 {
3969         struct lpfc_hba  *phba = vport->phba;
3970         LPFC_MBOXQ_t *mbox;
3971         int rc;
3972
3973         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3974         if (!mbox)
3975                 return 1;
3976
3977         lpfc_unreg_vpi(phba, vport->vpi, mbox);
3978         mbox->vport = vport;
3979         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
3980         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3981         if (rc == MBX_NOT_FINISHED) {
3982                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3983                                  "1800 Could not issue unreg_vpi\n");
3984                 mempool_free(mbox, phba->mbox_mem_pool);
3985                 return rc;
3986         }
3987         return 0;
3988 }
3989
3990 static void
3991 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3992 {
3993         struct lpfc_vport *vport = pmb->vport;
3994         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3995         MAILBOX_t *mb = &pmb->u.mb;
3996
3997         switch (mb->mbxStatus) {
3998         case 0x0011:
3999         case 0x9601:
4000         case 0x9602:
4001                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4002                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
4003                                  mb->mbxStatus);
4004                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
4005                 spin_lock_irq(shost->host_lock);
4006                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
4007                 spin_unlock_irq(shost->host_lock);
4008                 vport->fc_myDID = 0;
4009
4010                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4011                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
4012                         if (phba->nvmet_support)
4013                                 lpfc_nvmet_update_targetport(phba);
4014                         else
4015                                 lpfc_nvme_update_localport(vport);
4016                 }
4017                 goto out;
4018         }
4019
4020         spin_lock_irq(shost->host_lock);
4021         vport->vpi_state |= LPFC_VPI_REGISTERED;
4022         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
4023         spin_unlock_irq(shost->host_lock);
4024         vport->num_disc_nodes = 0;
4025         /* go thru NPR list and issue ELS PLOGIs */
4026         if (vport->fc_npr_cnt)
4027                 lpfc_els_disc_plogi(vport);
4028
4029         if (!vport->num_disc_nodes) {
4030                 spin_lock_irq(shost->host_lock);
4031                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
4032                 spin_unlock_irq(shost->host_lock);
4033                 lpfc_can_disctmo(vport);
4034         }
4035         vport->port_state = LPFC_VPORT_READY;
4036
4037 out:
4038         mempool_free(pmb, phba->mbox_mem_pool);
4039         return;
4040 }
4041
4042 /**
4043  * lpfc_create_static_vport - Read HBA config region to create static vports.
4044  * @phba: pointer to lpfc hba data structure.
4045  *
4046  * This routine issue a DUMP mailbox command for config region 22 to get
4047  * the list of static vports to be created. The function create vports
4048  * based on the information returned from the HBA.
4049  **/
4050 void
4051 lpfc_create_static_vport(struct lpfc_hba *phba)
4052 {
4053         LPFC_MBOXQ_t *pmb = NULL;
4054         MAILBOX_t *mb;
4055         struct static_vport_info *vport_info;
4056         int mbx_wait_rc = 0, i;
4057         struct fc_vport_identifiers vport_id;
4058         struct fc_vport *new_fc_vport;
4059         struct Scsi_Host *shost;
4060         struct lpfc_vport *vport;
4061         uint16_t offset = 0;
4062         uint8_t *vport_buff;
4063         struct lpfc_dmabuf *mp;
4064         uint32_t byte_count = 0;
4065
4066         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4067         if (!pmb) {
4068                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4069                                 "0542 lpfc_create_static_vport failed to"
4070                                 " allocate mailbox memory\n");
4071                 return;
4072         }
4073         memset(pmb, 0, sizeof(LPFC_MBOXQ_t));
4074         mb = &pmb->u.mb;
4075
4076         vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
4077         if (!vport_info) {
4078                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4079                                 "0543 lpfc_create_static_vport failed to"
4080                                 " allocate vport_info\n");
4081                 mempool_free(pmb, phba->mbox_mem_pool);
4082                 return;
4083         }
4084
4085         vport_buff = (uint8_t *) vport_info;
4086         do {
4087                 /* While loop iteration forces a free dma buffer from
4088                  * the previous loop because the mbox is reused and
4089                  * the dump routine is a single-use construct.
4090                  */
4091                 if (pmb->ctx_buf) {
4092                         mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
4093                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
4094                         kfree(mp);
4095                         pmb->ctx_buf = NULL;
4096                 }
4097                 if (lpfc_dump_static_vport(phba, pmb, offset))
4098                         goto out;
4099
4100                 pmb->vport = phba->pport;
4101                 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb,
4102                                                         LPFC_MBOX_TMO);
4103
4104                 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) {
4105                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4106                                 "0544 lpfc_create_static_vport failed to"
4107                                 " issue dump mailbox command ret 0x%x "
4108                                 "status 0x%x\n",
4109                                 mbx_wait_rc, mb->mbxStatus);
4110                         goto out;
4111                 }
4112
4113                 if (phba->sli_rev == LPFC_SLI_REV4) {
4114                         byte_count = pmb->u.mqe.un.mb_words[5];
4115                         mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
4116                         if (byte_count > sizeof(struct static_vport_info) -
4117                                         offset)
4118                                 byte_count = sizeof(struct static_vport_info)
4119                                         - offset;
4120                         memcpy(vport_buff + offset, mp->virt, byte_count);
4121                         offset += byte_count;
4122                 } else {
4123                         if (mb->un.varDmp.word_cnt >
4124                                 sizeof(struct static_vport_info) - offset)
4125                                 mb->un.varDmp.word_cnt =
4126                                         sizeof(struct static_vport_info)
4127                                                 - offset;
4128                         byte_count = mb->un.varDmp.word_cnt;
4129                         lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
4130                                 vport_buff + offset,
4131                                 byte_count);
4132
4133                         offset += byte_count;
4134                 }
4135
4136         } while (byte_count &&
4137                 offset < sizeof(struct static_vport_info));
4138
4139
4140         if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
4141                 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
4142                         != VPORT_INFO_REV)) {
4143                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4144                                 "0545 lpfc_create_static_vport bad"
4145                                 " information header 0x%x 0x%x\n",
4146                                 le32_to_cpu(vport_info->signature),
4147                                 le32_to_cpu(vport_info->rev) &
4148                                 VPORT_INFO_REV_MASK);
4149
4150                 goto out;
4151         }
4152
4153         shost = lpfc_shost_from_vport(phba->pport);
4154
4155         for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
4156                 memset(&vport_id, 0, sizeof(vport_id));
4157                 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
4158                 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
4159                 if (!vport_id.port_name || !vport_id.node_name)
4160                         continue;
4161
4162                 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
4163                 vport_id.vport_type = FC_PORTTYPE_NPIV;
4164                 vport_id.disable = false;
4165                 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
4166
4167                 if (!new_fc_vport) {
4168                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4169                                 "0546 lpfc_create_static_vport failed to"
4170                                 " create vport\n");
4171                         continue;
4172                 }
4173
4174                 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
4175                 vport->vport_flag |= STATIC_VPORT;
4176         }
4177
4178 out:
4179         kfree(vport_info);
4180         if (mbx_wait_rc != MBX_TIMEOUT)
4181                 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4182 }
4183
4184 /*
4185  * This routine handles processing a Fabric REG_LOGIN mailbox
4186  * command upon completion. It is setup in the LPFC_MBOXQ
4187  * as the completion routine when the command is
4188  * handed off to the SLI layer.
4189  */
4190 void
4191 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4192 {
4193         struct lpfc_vport *vport = pmb->vport;
4194         MAILBOX_t *mb = &pmb->u.mb;
4195         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4196         struct Scsi_Host *shost;
4197
4198         pmb->ctx_ndlp = NULL;
4199
4200         if (mb->mbxStatus) {
4201                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4202                                  "0258 Register Fabric login error: 0x%x\n",
4203                                  mb->mbxStatus);
4204                 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4205                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4206                         /* FLOGI failed, use loop map to make discovery list */
4207                         lpfc_disc_list_loopmap(vport);
4208
4209                         /* Start discovery */
4210                         lpfc_disc_start(vport);
4211                         /* Decrement the reference count to ndlp after the
4212                          * reference to the ndlp are done.
4213                          */
4214                         lpfc_nlp_put(ndlp);
4215                         return;
4216                 }
4217
4218                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
4219                 /* Decrement the reference count to ndlp after the reference
4220                  * to the ndlp are done.
4221                  */
4222                 lpfc_nlp_put(ndlp);
4223                 return;
4224         }
4225
4226         if (phba->sli_rev < LPFC_SLI_REV4)
4227                 ndlp->nlp_rpi = mb->un.varWords[0];
4228         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4229         ndlp->nlp_type |= NLP_FABRIC;
4230         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4231
4232         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
4233                 /* when physical port receive logo donot start
4234                  * vport discovery */
4235                 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
4236                         lpfc_start_fdiscs(phba);
4237                 else {
4238                         shost = lpfc_shost_from_vport(vport);
4239                         spin_lock_irq(shost->host_lock);
4240                         vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ;
4241                         spin_unlock_irq(shost->host_lock);
4242                 }
4243                 lpfc_do_scr_ns_plogi(phba, vport);
4244         }
4245
4246         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4247
4248         /* Drop the reference count from the mbox at the end after
4249          * all the current reference to the ndlp have been done.
4250          */
4251         lpfc_nlp_put(ndlp);
4252         return;
4253 }
4254
4255  /*
4256   * This routine will issue a GID_FT for each FC4 Type supported
4257   * by the driver. ALL GID_FTs must complete before discovery is started.
4258   */
4259 int
4260 lpfc_issue_gidft(struct lpfc_vport *vport)
4261 {
4262         /* Good status, issue CT Request to NameServer */
4263         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4264             (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) {
4265                 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_FCP)) {
4266                         /* Cannot issue NameServer FCP Query, so finish up
4267                          * discovery
4268                          */
4269                         lpfc_printf_vlog(vport, KERN_ERR,
4270                                          LOG_TRACE_EVENT,
4271                                          "0604 %s FC TYPE %x %s\n",
4272                                          "Failed to issue GID_FT to ",
4273                                          FC_TYPE_FCP,
4274                                          "Finishing discovery.");
4275                         return 0;
4276                 }
4277                 vport->gidft_inp++;
4278         }
4279
4280         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4281             (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
4282                 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_NVME)) {
4283                         /* Cannot issue NameServer NVME Query, so finish up
4284                          * discovery
4285                          */
4286                         lpfc_printf_vlog(vport, KERN_ERR,
4287                                          LOG_TRACE_EVENT,
4288                                          "0605 %s FC_TYPE %x %s %d\n",
4289                                          "Failed to issue GID_FT to ",
4290                                          FC_TYPE_NVME,
4291                                          "Finishing discovery: gidftinp ",
4292                                          vport->gidft_inp);
4293                         if (vport->gidft_inp == 0)
4294                                 return 0;
4295                 } else
4296                         vport->gidft_inp++;
4297         }
4298         return vport->gidft_inp;
4299 }
4300
4301 /**
4302  * lpfc_issue_gidpt - issue a GID_PT for all N_Ports
4303  * @vport: The virtual port for which this call is being executed.
4304  *
4305  * This routine will issue a GID_PT to get a list of all N_Ports
4306  *
4307  * Return value :
4308  *   0 - Failure to issue a GID_PT
4309  *   1 - GID_PT issued
4310  **/
4311 int
4312 lpfc_issue_gidpt(struct lpfc_vport *vport)
4313 {
4314         /* Good status, issue CT Request to NameServer */
4315         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) {
4316                 /* Cannot issue NameServer FCP Query, so finish up
4317                  * discovery
4318                  */
4319                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4320                                  "0606 %s Port TYPE %x %s\n",
4321                                  "Failed to issue GID_PT to ",
4322                                  GID_PT_N_PORT,
4323                                  "Finishing discovery.");
4324                 return 0;
4325         }
4326         vport->gidft_inp++;
4327         return 1;
4328 }
4329
4330 /*
4331  * This routine handles processing a NameServer REG_LOGIN mailbox
4332  * command upon completion. It is setup in the LPFC_MBOXQ
4333  * as the completion routine when the command is
4334  * handed off to the SLI layer.
4335  */
4336 void
4337 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4338 {
4339         MAILBOX_t *mb = &pmb->u.mb;
4340         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4341         struct lpfc_vport *vport = pmb->vport;
4342         int rc;
4343
4344         pmb->ctx_ndlp = NULL;
4345         vport->gidft_inp = 0;
4346
4347         if (mb->mbxStatus) {
4348                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4349                                  "0260 Register NameServer error: 0x%x\n",
4350                                  mb->mbxStatus);
4351
4352 out:
4353                 /* decrement the node reference count held for this
4354                  * callback function.
4355                  */
4356                 lpfc_nlp_put(ndlp);
4357                 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4358
4359                 /* If the node is not registered with the scsi or nvme
4360                  * transport, remove the fabric node.  The failed reg_login
4361                  * is terminal and forces the removal of the last node
4362                  * reference.
4363                  */
4364                 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
4365                         spin_lock_irq(&ndlp->lock);
4366                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
4367                         spin_unlock_irq(&ndlp->lock);
4368                         lpfc_nlp_put(ndlp);
4369                 }
4370
4371                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4372                         /*
4373                          * RegLogin failed, use loop map to make discovery
4374                          * list
4375                          */
4376                         lpfc_disc_list_loopmap(vport);
4377
4378                         /* Start discovery */
4379                         lpfc_disc_start(vport);
4380                         return;
4381                 }
4382                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
4383                 return;
4384         }
4385
4386         if (phba->sli_rev < LPFC_SLI_REV4)
4387                 ndlp->nlp_rpi = mb->un.varWords[0];
4388         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4389         ndlp->nlp_type |= NLP_FABRIC;
4390         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4391         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
4392                          "0003 rpi:%x DID:%x flg:%x %d x%px\n",
4393                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
4394                          kref_read(&ndlp->kref),
4395                          ndlp);
4396
4397         if (vport->port_state < LPFC_VPORT_READY) {
4398                 /* Link up discovery requires Fabric registration. */
4399                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
4400                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
4401                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
4402                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
4403
4404                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4405                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP))
4406                         lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, FC_TYPE_FCP);
4407
4408                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4409                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME))
4410                         lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0,
4411                                     FC_TYPE_NVME);
4412
4413                 /* Issue SCR just before NameServer GID_FT Query */
4414                 lpfc_issue_els_scr(vport, 0);
4415
4416                 /* Link was bounced or a Fabric LOGO occurred.  Start EDC
4417                  * with initial FW values provided the congestion mode is
4418                  * not off.  Note that signals may or may not be supported
4419                  * by the adapter but FPIN is provided by default for 1
4420                  * or both missing signals support.
4421                  */
4422                 if (phba->cmf_active_mode != LPFC_CFG_OFF) {
4423                         phba->cgn_reg_fpin = phba->cgn_init_reg_fpin;
4424                         phba->cgn_reg_signal = phba->cgn_init_reg_signal;
4425                         rc = lpfc_issue_els_edc(vport, 0);
4426                         lpfc_printf_log(phba, KERN_INFO,
4427                                         LOG_INIT | LOG_ELS | LOG_DISCOVERY,
4428                                         "4220 Issue EDC status x%x Data x%x\n",
4429                                         rc, phba->cgn_init_reg_signal);
4430                 } else if (phba->lmt & LMT_64Gb) {
4431                         /* may send link fault capability descriptor */
4432                         lpfc_issue_els_edc(vport, 0);
4433                 } else {
4434                         lpfc_issue_els_rdf(vport, 0);
4435                 }
4436         }
4437
4438         vport->fc_ns_retry = 0;
4439         if (lpfc_issue_gidft(vport) == 0)
4440                 goto out;
4441
4442         /*
4443          * At this point in time we may need to wait for multiple
4444          * SLI_CTNS_GID_FT CT commands to complete before we start discovery.
4445          *
4446          * decrement the node reference count held for this
4447          * callback function.
4448          */
4449         lpfc_nlp_put(ndlp);
4450         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4451         return;
4452 }
4453
4454 /*
4455  * This routine handles processing a Fabric Controller REG_LOGIN mailbox
4456  * command upon completion. It is setup in the LPFC_MBOXQ
4457  * as the completion routine when the command is handed off to the SLI layer.
4458  */
4459 void
4460 lpfc_mbx_cmpl_fc_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4461 {
4462         struct lpfc_vport *vport = pmb->vport;
4463         MAILBOX_t *mb = &pmb->u.mb;
4464         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4465
4466         pmb->ctx_ndlp = NULL;
4467         if (mb->mbxStatus) {
4468                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4469                                  "0933 %s: Register FC login error: 0x%x\n",
4470                                  __func__, mb->mbxStatus);
4471                 goto out;
4472         }
4473
4474         lpfc_check_nlp_post_devloss(vport, ndlp);
4475
4476         if (phba->sli_rev < LPFC_SLI_REV4)
4477                 ndlp->nlp_rpi = mb->un.varWords[0];
4478
4479         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4480                          "0934 %s: Complete FC x%x RegLogin rpi x%x ste x%x\n",
4481                          __func__, ndlp->nlp_DID, ndlp->nlp_rpi,
4482                          ndlp->nlp_state);
4483
4484         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4485         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
4486         ndlp->nlp_type |= NLP_FABRIC;
4487         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4488
4489  out:
4490         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4491
4492         /* Drop the reference count from the mbox at the end after
4493          * all the current reference to the ndlp have been done.
4494          */
4495         lpfc_nlp_put(ndlp);
4496 }
4497
4498 static void
4499 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4500 {
4501         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4502         struct fc_rport  *rport;
4503         struct lpfc_rport_data *rdata;
4504         struct fc_rport_identifiers rport_ids;
4505         struct lpfc_hba  *phba = vport->phba;
4506         unsigned long flags;
4507
4508         if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4509                 return;
4510
4511         /* Remote port has reappeared. Re-register w/ FC transport */
4512         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
4513         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
4514         rport_ids.port_id = ndlp->nlp_DID;
4515         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
4516
4517
4518         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4519                               "rport add:       did:x%x flg:x%x type x%x",
4520                               ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4521
4522         /* Don't add the remote port if unloading. */
4523         if (vport->load_flag & FC_UNLOADING)
4524                 return;
4525
4526         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
4527         if (!rport) {
4528                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
4529                            "Warning: fc_remote_port_add failed\n");
4530                 return;
4531         }
4532
4533         /* Successful port add.  Complete initializing node data */
4534         rport->maxframe_size = ndlp->nlp_maxframe;
4535         rport->supported_classes = ndlp->nlp_class_sup;
4536         rdata = rport->dd_data;
4537         rdata->pnode = lpfc_nlp_get(ndlp);
4538         if (!rdata->pnode) {
4539                 dev_warn(&phba->pcidev->dev,
4540                          "Warning - node ref failed. Unreg rport\n");
4541                 fc_remote_port_delete(rport);
4542                 ndlp->rport = NULL;
4543                 return;
4544         }
4545
4546         spin_lock_irqsave(&ndlp->lock, flags);
4547         ndlp->fc4_xpt_flags |= SCSI_XPT_REGD;
4548         spin_unlock_irqrestore(&ndlp->lock, flags);
4549
4550         if (ndlp->nlp_type & NLP_FCP_TARGET)
4551                 rport_ids.roles |= FC_PORT_ROLE_FCP_TARGET;
4552         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
4553                 rport_ids.roles |= FC_PORT_ROLE_FCP_INITIATOR;
4554         if (ndlp->nlp_type & NLP_NVME_INITIATOR)
4555                 rport_ids.roles |= FC_PORT_ROLE_NVME_INITIATOR;
4556         if (ndlp->nlp_type & NLP_NVME_TARGET)
4557                 rport_ids.roles |= FC_PORT_ROLE_NVME_TARGET;
4558         if (ndlp->nlp_type & NLP_NVME_DISCOVERY)
4559                 rport_ids.roles |= FC_PORT_ROLE_NVME_DISCOVERY;
4560
4561         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
4562                 fc_remote_port_rolechg(rport, rport_ids.roles);
4563
4564         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
4565                          "3183 %s rport x%px DID x%x, role x%x refcnt %d\n",
4566                          __func__, rport, rport->port_id, rport->roles,
4567                          kref_read(&ndlp->kref));
4568
4569         if ((rport->scsi_target_id != -1) &&
4570             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
4571                 ndlp->nlp_sid = rport->scsi_target_id;
4572         }
4573
4574         return;
4575 }
4576
4577 static void
4578 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
4579 {
4580         struct fc_rport *rport = ndlp->rport;
4581         struct lpfc_vport *vport = ndlp->vport;
4582
4583         if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4584                 return;
4585
4586         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4587                 "rport delete:    did:x%x flg:x%x type x%x",
4588                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4589
4590         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4591                          "3184 rport unregister x%06x, rport x%px "
4592                          "xptflg x%x refcnt %d\n",
4593                          ndlp->nlp_DID, rport, ndlp->fc4_xpt_flags,
4594                          kref_read(&ndlp->kref));
4595
4596         fc_remote_port_delete(rport);
4597         lpfc_nlp_put(ndlp);
4598 }
4599
4600 static void
4601 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
4602 {
4603         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4604         unsigned long iflags;
4605
4606         spin_lock_irqsave(shost->host_lock, iflags);
4607         switch (state) {
4608         case NLP_STE_UNUSED_NODE:
4609                 vport->fc_unused_cnt += count;
4610                 break;
4611         case NLP_STE_PLOGI_ISSUE:
4612                 vport->fc_plogi_cnt += count;
4613                 break;
4614         case NLP_STE_ADISC_ISSUE:
4615                 vport->fc_adisc_cnt += count;
4616                 break;
4617         case NLP_STE_REG_LOGIN_ISSUE:
4618                 vport->fc_reglogin_cnt += count;
4619                 break;
4620         case NLP_STE_PRLI_ISSUE:
4621                 vport->fc_prli_cnt += count;
4622                 break;
4623         case NLP_STE_UNMAPPED_NODE:
4624                 vport->fc_unmap_cnt += count;
4625                 break;
4626         case NLP_STE_MAPPED_NODE:
4627                 vport->fc_map_cnt += count;
4628                 break;
4629         case NLP_STE_NPR_NODE:
4630                 if (vport->fc_npr_cnt == 0 && count == -1)
4631                         vport->fc_npr_cnt = 0;
4632                 else
4633                         vport->fc_npr_cnt += count;
4634                 break;
4635         }
4636         spin_unlock_irqrestore(shost->host_lock, iflags);
4637 }
4638
4639 /* Register a node with backend if not already done */
4640 void
4641 lpfc_nlp_reg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4642 {
4643         unsigned long iflags;
4644
4645         lpfc_check_nlp_post_devloss(vport, ndlp);
4646
4647         spin_lock_irqsave(&ndlp->lock, iflags);
4648         if (ndlp->fc4_xpt_flags & NLP_XPT_REGD) {
4649                 /* Already registered with backend, trigger rescan */
4650                 spin_unlock_irqrestore(&ndlp->lock, iflags);
4651
4652                 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD &&
4653                     ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY)) {
4654                         lpfc_nvme_rescan_port(vport, ndlp);
4655                 }
4656                 return;
4657         }
4658
4659         ndlp->fc4_xpt_flags |= NLP_XPT_REGD;
4660         spin_unlock_irqrestore(&ndlp->lock, iflags);
4661
4662         if (lpfc_valid_xpt_node(ndlp)) {
4663                 vport->phba->nport_event_cnt++;
4664                 /*
4665                  * Tell the fc transport about the port, if we haven't
4666                  * already. If we have, and it's a scsi entity, be
4667                  */
4668                 lpfc_register_remote_port(vport, ndlp);
4669         }
4670
4671         /* We are done if we do not have any NVME remote node */
4672         if (!(ndlp->nlp_fc4_type & NLP_FC4_NVME))
4673                 return;
4674
4675         /* Notify the NVME transport of this new rport. */
4676         if (vport->phba->sli_rev >= LPFC_SLI_REV4 &&
4677                         ndlp->nlp_fc4_type & NLP_FC4_NVME) {
4678                 if (vport->phba->nvmet_support == 0) {
4679                         /* Register this rport with the transport.
4680                          * Only NVME Target Rports are registered with
4681                          * the transport.
4682                          */
4683                         if (ndlp->nlp_type & NLP_NVME_TARGET) {
4684                                 vport->phba->nport_event_cnt++;
4685                                 lpfc_nvme_register_port(vport, ndlp);
4686                         }
4687                 } else {
4688                         /* Just take an NDLP ref count since the
4689                          * target does not register rports.
4690                          */
4691                         lpfc_nlp_get(ndlp);
4692                 }
4693         }
4694 }
4695
4696 /* Unregister a node with backend if not already done */
4697 void
4698 lpfc_nlp_unreg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4699 {
4700         unsigned long iflags;
4701
4702         spin_lock_irqsave(&ndlp->lock, iflags);
4703         if (!(ndlp->fc4_xpt_flags & NLP_XPT_REGD)) {
4704                 spin_unlock_irqrestore(&ndlp->lock, iflags);
4705                 lpfc_printf_vlog(vport, KERN_INFO,
4706                                  LOG_ELS | LOG_NODE | LOG_DISCOVERY,
4707                                  "0999 %s Not regd: ndlp x%px rport x%px DID "
4708                                  "x%x FLG x%x XPT x%x\n",
4709                                   __func__, ndlp, ndlp->rport, ndlp->nlp_DID,
4710                                   ndlp->nlp_flag, ndlp->fc4_xpt_flags);
4711                 return;
4712         }
4713
4714         ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD;
4715         spin_unlock_irqrestore(&ndlp->lock, iflags);
4716
4717         if (ndlp->rport &&
4718             ndlp->fc4_xpt_flags & SCSI_XPT_REGD) {
4719                 vport->phba->nport_event_cnt++;
4720                 lpfc_unregister_remote_port(ndlp);
4721         } else if (!ndlp->rport) {
4722                 lpfc_printf_vlog(vport, KERN_INFO,
4723                                  LOG_ELS | LOG_NODE | LOG_DISCOVERY,
4724                                  "1999 %s NDLP in devloss x%px DID x%x FLG x%x"
4725                                  " XPT x%x refcnt %u\n",
4726                                  __func__, ndlp, ndlp->nlp_DID, ndlp->nlp_flag,
4727                                  ndlp->fc4_xpt_flags,
4728                                  kref_read(&ndlp->kref));
4729         }
4730
4731         if (ndlp->fc4_xpt_flags & NVME_XPT_REGD) {
4732                 vport->phba->nport_event_cnt++;
4733                 if (vport->phba->nvmet_support == 0) {
4734                         /* Start devloss if target. */
4735                         if (ndlp->nlp_type & NLP_NVME_TARGET)
4736                                 lpfc_nvme_unregister_port(vport, ndlp);
4737                 } else {
4738                         /* NVMET has no upcall. */
4739                         lpfc_nlp_put(ndlp);
4740                 }
4741         }
4742
4743 }
4744
4745 /*
4746  * Adisc state change handling
4747  */
4748 static void
4749 lpfc_handle_adisc_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4750                 int new_state)
4751 {
4752         switch (new_state) {
4753         /*
4754          * Any state to ADISC_ISSUE
4755          * Do nothing, adisc cmpl handling will trigger state changes
4756          */
4757         case NLP_STE_ADISC_ISSUE:
4758                 break;
4759
4760         /*
4761          * ADISC_ISSUE to mapped states
4762          * Trigger a registration with backend, it will be nop if
4763          * already registered
4764          */
4765         case NLP_STE_UNMAPPED_NODE:
4766                 ndlp->nlp_type |= NLP_FC_NODE;
4767                 fallthrough;
4768         case NLP_STE_MAPPED_NODE:
4769                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4770                 lpfc_nlp_reg_node(vport, ndlp);
4771                 break;
4772
4773         /*
4774          * ADISC_ISSUE to non-mapped states
4775          * We are moving from ADISC_ISSUE to a non-mapped state because
4776          * ADISC failed, we would have skipped unregistering with
4777          * backend, attempt it now
4778          */
4779         case NLP_STE_NPR_NODE:
4780                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
4781                 fallthrough;
4782         default:
4783                 lpfc_nlp_unreg_node(vport, ndlp);
4784                 break;
4785         }
4786
4787 }
4788
4789 static void
4790 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4791                        int old_state, int new_state)
4792 {
4793         /* Trap ADISC changes here */
4794         if (new_state == NLP_STE_ADISC_ISSUE ||
4795             old_state == NLP_STE_ADISC_ISSUE) {
4796                 lpfc_handle_adisc_state(vport, ndlp, new_state);
4797                 return;
4798         }
4799
4800         if (new_state == NLP_STE_UNMAPPED_NODE) {
4801                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4802                 ndlp->nlp_type |= NLP_FC_NODE;
4803         }
4804         if (new_state == NLP_STE_MAPPED_NODE)
4805                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4806         if (new_state == NLP_STE_NPR_NODE)
4807                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
4808
4809         /* Reg/Unreg for FCP and NVME Transport interface */
4810         if ((old_state == NLP_STE_MAPPED_NODE ||
4811              old_state == NLP_STE_UNMAPPED_NODE)) {
4812                 /* For nodes marked for ADISC, Handle unreg in ADISC cmpl
4813                  * if linkup. In linkdown do unreg_node
4814                  */
4815                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC) ||
4816                     !lpfc_is_link_up(vport->phba))
4817                         lpfc_nlp_unreg_node(vport, ndlp);
4818         }
4819
4820         if (new_state ==  NLP_STE_MAPPED_NODE ||
4821             new_state == NLP_STE_UNMAPPED_NODE)
4822                 lpfc_nlp_reg_node(vport, ndlp);
4823
4824         /*
4825          * If the node just added to Mapped list was an FCP target,
4826          * but the remote port registration failed or assigned a target
4827          * id outside the presentable range - move the node to the
4828          * Unmapped List.
4829          */
4830         if ((new_state == NLP_STE_MAPPED_NODE) &&
4831             (ndlp->nlp_type & NLP_FCP_TARGET) &&
4832             (!ndlp->rport ||
4833              ndlp->rport->scsi_target_id == -1 ||
4834              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
4835                 spin_lock_irq(&ndlp->lock);
4836                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
4837                 spin_unlock_irq(&ndlp->lock);
4838                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4839         }
4840 }
4841
4842 static char *
4843 lpfc_nlp_state_name(char *buffer, size_t size, int state)
4844 {
4845         static char *states[] = {
4846                 [NLP_STE_UNUSED_NODE] = "UNUSED",
4847                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
4848                 [NLP_STE_ADISC_ISSUE] = "ADISC",
4849                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
4850                 [NLP_STE_PRLI_ISSUE] = "PRLI",
4851                 [NLP_STE_LOGO_ISSUE] = "LOGO",
4852                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
4853                 [NLP_STE_MAPPED_NODE] = "MAPPED",
4854                 [NLP_STE_NPR_NODE] = "NPR",
4855         };
4856
4857         if (state < NLP_STE_MAX_STATE && states[state])
4858                 strscpy(buffer, states[state], size);
4859         else
4860                 snprintf(buffer, size, "unknown (%d)", state);
4861         return buffer;
4862 }
4863
4864 void
4865 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4866                    int state)
4867 {
4868         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4869         int  old_state = ndlp->nlp_state;
4870         int node_dropped = ndlp->nlp_flag & NLP_DROPPED;
4871         char name1[16], name2[16];
4872
4873         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4874                          "0904 NPort state transition x%06x, %s -> %s\n",
4875                          ndlp->nlp_DID,
4876                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
4877                          lpfc_nlp_state_name(name2, sizeof(name2), state));
4878
4879         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4880                 "node statechg    did:x%x old:%d ste:%d",
4881                 ndlp->nlp_DID, old_state, state);
4882
4883         if (node_dropped && old_state == NLP_STE_UNUSED_NODE &&
4884             state != NLP_STE_UNUSED_NODE) {
4885                 ndlp->nlp_flag &= ~NLP_DROPPED;
4886                 lpfc_nlp_get(ndlp);
4887         }
4888
4889         if (old_state == NLP_STE_NPR_NODE &&
4890             state != NLP_STE_NPR_NODE)
4891                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4892         if (old_state == NLP_STE_UNMAPPED_NODE) {
4893                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
4894                 ndlp->nlp_type &= ~NLP_FC_NODE;
4895         }
4896
4897         if (list_empty(&ndlp->nlp_listp)) {
4898                 spin_lock_irq(shost->host_lock);
4899                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4900                 spin_unlock_irq(shost->host_lock);
4901         } else if (old_state)
4902                 lpfc_nlp_counters(vport, old_state, -1);
4903
4904         ndlp->nlp_state = state;
4905         lpfc_nlp_counters(vport, state, 1);
4906         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
4907 }
4908
4909 void
4910 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4911 {
4912         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4913
4914         if (list_empty(&ndlp->nlp_listp)) {
4915                 spin_lock_irq(shost->host_lock);
4916                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4917                 spin_unlock_irq(shost->host_lock);
4918         }
4919 }
4920
4921 void
4922 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4923 {
4924         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4925
4926         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4927         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4928                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4929         spin_lock_irq(shost->host_lock);
4930         list_del_init(&ndlp->nlp_listp);
4931         spin_unlock_irq(shost->host_lock);
4932         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4933                                 NLP_STE_UNUSED_NODE);
4934 }
4935
4936 /**
4937  * lpfc_initialize_node - Initialize all fields of node object
4938  * @vport: Pointer to Virtual Port object.
4939  * @ndlp: Pointer to FC node object.
4940  * @did: FC_ID of the node.
4941  *
4942  * This function is always called when node object need to be initialized.
4943  * It initializes all the fields of the node object. Although the reference
4944  * to phba from @ndlp can be obtained indirectly through it's reference to
4945  * @vport, a direct reference to phba is taken here by @ndlp. This is due
4946  * to the life-span of the @ndlp might go beyond the existence of @vport as
4947  * the final release of ndlp is determined by its reference count. And, the
4948  * operation on @ndlp needs the reference to phba.
4949  **/
4950 static inline void
4951 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4952         uint32_t did)
4953 {
4954         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
4955         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
4956         timer_setup(&ndlp->nlp_delayfunc, lpfc_els_retry_delay, 0);
4957         INIT_LIST_HEAD(&ndlp->recovery_evt.evt_listp);
4958
4959         ndlp->nlp_DID = did;
4960         ndlp->vport = vport;
4961         ndlp->phba = vport->phba;
4962         ndlp->nlp_sid = NLP_NO_SID;
4963         ndlp->nlp_fc4_type = NLP_FC4_NONE;
4964         kref_init(&ndlp->kref);
4965         atomic_set(&ndlp->cmd_pending, 0);
4966         ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
4967         ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
4968 }
4969
4970 void
4971 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4972 {
4973         /*
4974          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
4975          * be used when lpfc wants to remove the "last" lpfc_nlp_put() to
4976          * release the ndlp from the vport when conditions are correct.
4977          */
4978         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
4979                 return;
4980         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
4981         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4982                 lpfc_cleanup_vports_rrqs(vport, ndlp);
4983                 lpfc_unreg_rpi(vport, ndlp);
4984         }
4985
4986         /* NLP_DROPPED means another thread already removed the initial
4987          * reference from lpfc_nlp_init.  If set, don't drop it again and
4988          * introduce an imbalance.
4989          */
4990         spin_lock_irq(&ndlp->lock);
4991         if (!(ndlp->nlp_flag & NLP_DROPPED)) {
4992                 ndlp->nlp_flag |= NLP_DROPPED;
4993                 spin_unlock_irq(&ndlp->lock);
4994                 lpfc_nlp_put(ndlp);
4995                 return;
4996         }
4997         spin_unlock_irq(&ndlp->lock);
4998 }
4999
5000 /*
5001  * Start / ReStart rescue timer for Discovery / RSCN handling
5002  */
5003 void
5004 lpfc_set_disctmo(struct lpfc_vport *vport)
5005 {
5006         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5007         struct lpfc_hba  *phba = vport->phba;
5008         uint32_t tmo;
5009
5010         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
5011                 /* For FAN, timeout should be greater than edtov */
5012                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
5013         } else {
5014                 /* Normal discovery timeout should be > than ELS/CT timeout
5015                  * FC spec states we need 3 * ratov for CT requests
5016                  */
5017                 tmo = ((phba->fc_ratov * 3) + 3);
5018         }
5019
5020
5021         if (!timer_pending(&vport->fc_disctmo)) {
5022                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
5023                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
5024                         tmo, vport->port_state, vport->fc_flag);
5025         }
5026
5027         mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo));
5028         spin_lock_irq(shost->host_lock);
5029         vport->fc_flag |= FC_DISC_TMO;
5030         spin_unlock_irq(shost->host_lock);
5031
5032         /* Start Discovery Timer state <hba_state> */
5033         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5034                          "0247 Start Discovery Timer state x%x "
5035                          "Data: x%x x%lx x%x x%x\n",
5036                          vport->port_state, tmo,
5037                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
5038                          vport->fc_adisc_cnt);
5039
5040         return;
5041 }
5042
5043 /*
5044  * Cancel rescue timer for Discovery / RSCN handling
5045  */
5046 int
5047 lpfc_can_disctmo(struct lpfc_vport *vport)
5048 {
5049         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5050         unsigned long iflags;
5051
5052         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
5053                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
5054                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
5055
5056         /* Turn off discovery timer if its running */
5057         if (vport->fc_flag & FC_DISC_TMO ||
5058             timer_pending(&vport->fc_disctmo)) {
5059                 spin_lock_irqsave(shost->host_lock, iflags);
5060                 vport->fc_flag &= ~FC_DISC_TMO;
5061                 spin_unlock_irqrestore(shost->host_lock, iflags);
5062                 del_timer_sync(&vport->fc_disctmo);
5063                 spin_lock_irqsave(&vport->work_port_lock, iflags);
5064                 vport->work_port_events &= ~WORKER_DISC_TMO;
5065                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
5066         }
5067
5068         /* Cancel Discovery Timer state <hba_state> */
5069         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5070                          "0248 Cancel Discovery Timer state x%x "
5071                          "Data: x%x x%x x%x\n",
5072                          vport->port_state, vport->fc_flag,
5073                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
5074         return 0;
5075 }
5076
5077 /*
5078  * Check specified ring for outstanding IOCB on the SLI queue
5079  * Return true if iocb matches the specified nport
5080  */
5081 int
5082 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
5083                     struct lpfc_sli_ring *pring,
5084                     struct lpfc_iocbq *iocb,
5085                     struct lpfc_nodelist *ndlp)
5086 {
5087         struct lpfc_vport *vport = ndlp->vport;
5088         u8 ulp_command;
5089         u16 ulp_context;
5090         u32 remote_id;
5091
5092         if (iocb->vport != vport)
5093                 return 0;
5094
5095         ulp_command = get_job_cmnd(phba, iocb);
5096         ulp_context = get_job_ulpcontext(phba, iocb);
5097         remote_id = get_job_els_rsp64_did(phba, iocb);
5098
5099         if (pring->ringno == LPFC_ELS_RING) {
5100                 switch (ulp_command) {
5101                 case CMD_GEN_REQUEST64_CR:
5102                         if (iocb->ndlp == ndlp)
5103                                 return 1;
5104                         fallthrough;
5105                 case CMD_ELS_REQUEST64_CR:
5106                         if (remote_id == ndlp->nlp_DID)
5107                                 return 1;
5108                         fallthrough;
5109                 case CMD_XMIT_ELS_RSP64_CX:
5110                         if (iocb->ndlp == ndlp)
5111                                 return 1;
5112                 }
5113         } else if (pring->ringno == LPFC_FCP_RING) {
5114                 /* Skip match check if waiting to relogin to FCP target */
5115                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
5116                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
5117                         return 0;
5118                 }
5119                 if (ulp_context == ndlp->nlp_rpi)
5120                         return 1;
5121         }
5122         return 0;
5123 }
5124
5125 static void
5126 __lpfc_dequeue_nport_iocbs(struct lpfc_hba *phba,
5127                 struct lpfc_nodelist *ndlp, struct lpfc_sli_ring *pring,
5128                 struct list_head *dequeue_list)
5129 {
5130         struct lpfc_iocbq *iocb, *next_iocb;
5131
5132         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
5133                 /* Check to see if iocb matches the nport */
5134                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
5135                         /* match, dequeue */
5136                         list_move_tail(&iocb->list, dequeue_list);
5137         }
5138 }
5139
5140 static void
5141 lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba *phba,
5142                 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
5143 {
5144         struct lpfc_sli *psli = &phba->sli;
5145         uint32_t i;
5146
5147         spin_lock_irq(&phba->hbalock);
5148         for (i = 0; i < psli->num_rings; i++)
5149                 __lpfc_dequeue_nport_iocbs(phba, ndlp, &psli->sli3_ring[i],
5150                                                 dequeue_list);
5151         spin_unlock_irq(&phba->hbalock);
5152 }
5153
5154 static void
5155 lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba *phba,
5156                 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
5157 {
5158         struct lpfc_sli_ring *pring;
5159         struct lpfc_queue *qp = NULL;
5160
5161         spin_lock_irq(&phba->hbalock);
5162         list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
5163                 pring = qp->pring;
5164                 if (!pring)
5165                         continue;
5166                 spin_lock(&pring->ring_lock);
5167                 __lpfc_dequeue_nport_iocbs(phba, ndlp, pring, dequeue_list);
5168                 spin_unlock(&pring->ring_lock);
5169         }
5170         spin_unlock_irq(&phba->hbalock);
5171 }
5172
5173 /*
5174  * Free resources / clean up outstanding I/Os
5175  * associated with nlp_rpi in the LPFC_NODELIST entry.
5176  */
5177 static int
5178 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
5179 {
5180         LIST_HEAD(completions);
5181
5182         lpfc_fabric_abort_nport(ndlp);
5183
5184         /*
5185          * Everything that matches on txcmplq will be returned
5186          * by firmware with a no rpi error.
5187          */
5188         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
5189                 if (phba->sli_rev != LPFC_SLI_REV4)
5190                         lpfc_sli3_dequeue_nport_iocbs(phba, ndlp, &completions);
5191                 else
5192                         lpfc_sli4_dequeue_nport_iocbs(phba, ndlp, &completions);
5193         }
5194
5195         /* Cancel all the IOCBs from the completions list */
5196         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5197                               IOERR_SLI_ABORTED);
5198
5199         return 0;
5200 }
5201
5202 /**
5203  * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO
5204  * @phba: Pointer to HBA context object.
5205  * @pmb: Pointer to mailbox object.
5206  *
5207  * This function will issue an ELS LOGO command after completing
5208  * the UNREG_RPI.
5209  **/
5210 static void
5211 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5212 {
5213         struct lpfc_vport  *vport = pmb->vport;
5214         struct lpfc_nodelist *ndlp;
5215
5216         ndlp = (struct lpfc_nodelist *)(pmb->ctx_ndlp);
5217         if (!ndlp)
5218                 return;
5219         lpfc_issue_els_logo(vport, ndlp, 0);
5220
5221         /* Check to see if there are any deferred events to process */
5222         if ((ndlp->nlp_flag & NLP_UNREG_INP) &&
5223             (ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING)) {
5224                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5225                                  "1434 UNREG cmpl deferred logo x%x "
5226                                  "on NPort x%x Data: x%x x%px\n",
5227                                  ndlp->nlp_rpi, ndlp->nlp_DID,
5228                                  ndlp->nlp_defer_did, ndlp);
5229
5230                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5231                 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
5232                 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
5233         } else {
5234                 /* NLP_RELEASE_RPI is only set for SLI4 ports. */
5235                 if (ndlp->nlp_flag & NLP_RELEASE_RPI) {
5236                         lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi);
5237                         spin_lock_irq(&ndlp->lock);
5238                         ndlp->nlp_flag &= ~NLP_RELEASE_RPI;
5239                         ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
5240                         spin_unlock_irq(&ndlp->lock);
5241                 }
5242                 spin_lock_irq(&ndlp->lock);
5243                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5244                 spin_unlock_irq(&ndlp->lock);
5245         }
5246
5247         /* The node has an outstanding reference for the unreg. Now
5248          * that the LOGO action and cleanup are finished, release
5249          * resources.
5250          */
5251         lpfc_nlp_put(ndlp);
5252         mempool_free(pmb, phba->mbox_mem_pool);
5253 }
5254
5255 /*
5256  * Sets the mailbox completion handler to be used for the
5257  * unreg_rpi command. The handler varies based on the state of
5258  * the port and what will be happening to the rpi next.
5259  */
5260 static void
5261 lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba *phba, struct lpfc_vport *vport,
5262         struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox)
5263 {
5264         unsigned long iflags;
5265
5266         /* Driver always gets a reference on the mailbox job
5267          * in support of async jobs.
5268          */
5269         mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
5270         if (!mbox->ctx_ndlp)
5271                 return;
5272
5273         if (ndlp->nlp_flag & NLP_ISSUE_LOGO) {
5274                 mbox->mbox_cmpl = lpfc_nlp_logo_unreg;
5275
5276         } else if (phba->sli_rev == LPFC_SLI_REV4 &&
5277                    (!(vport->load_flag & FC_UNLOADING)) &&
5278                     (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
5279                                       LPFC_SLI_INTF_IF_TYPE_2) &&
5280                     (kref_read(&ndlp->kref) > 0)) {
5281                 mbox->mbox_cmpl = lpfc_sli4_unreg_rpi_cmpl_clr;
5282         } else {
5283                 if (vport->load_flag & FC_UNLOADING) {
5284                         if (phba->sli_rev == LPFC_SLI_REV4) {
5285                                 spin_lock_irqsave(&ndlp->lock, iflags);
5286                                 ndlp->nlp_flag |= NLP_RELEASE_RPI;
5287                                 spin_unlock_irqrestore(&ndlp->lock, iflags);
5288                         }
5289                 }
5290                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5291         }
5292 }
5293
5294 /*
5295  * Free rpi associated with LPFC_NODELIST entry.
5296  * This routine is called from lpfc_freenode(), when we are removing
5297  * a LPFC_NODELIST entry. It is also called if the driver initiates a
5298  * LOGO that completes successfully, and we are waiting to PLOGI back
5299  * to the remote NPort. In addition, it is called after we receive
5300  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
5301  * we are waiting to PLOGI back to the remote NPort.
5302  */
5303 int
5304 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5305 {
5306         struct lpfc_hba *phba = vport->phba;
5307         LPFC_MBOXQ_t    *mbox;
5308         int rc, acc_plogi = 1;
5309         uint16_t rpi;
5310
5311         if (ndlp->nlp_flag & NLP_RPI_REGISTERED ||
5312             ndlp->nlp_flag & NLP_REG_LOGIN_SEND) {
5313                 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
5314                         lpfc_printf_vlog(vport, KERN_INFO,
5315                                          LOG_NODE | LOG_DISCOVERY,
5316                                          "3366 RPI x%x needs to be "
5317                                          "unregistered nlp_flag x%x "
5318                                          "did x%x\n",
5319                                          ndlp->nlp_rpi, ndlp->nlp_flag,
5320                                          ndlp->nlp_DID);
5321
5322                 /* If there is already an UNREG in progress for this ndlp,
5323                  * no need to queue up another one.
5324                  */
5325                 if (ndlp->nlp_flag & NLP_UNREG_INP) {
5326                         lpfc_printf_vlog(vport, KERN_INFO,
5327                                          LOG_NODE | LOG_DISCOVERY,
5328                                          "1436 unreg_rpi SKIP UNREG x%x on "
5329                                          "NPort x%x deferred x%x  flg x%x "
5330                                          "Data: x%px\n",
5331                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5332                                          ndlp->nlp_defer_did,
5333                                          ndlp->nlp_flag, ndlp);
5334                         goto out;
5335                 }
5336
5337                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5338                 if (mbox) {
5339                         /* SLI4 ports require the physical rpi value. */
5340                         rpi = ndlp->nlp_rpi;
5341                         if (phba->sli_rev == LPFC_SLI_REV4)
5342                                 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
5343
5344                         lpfc_unreg_login(phba, vport->vpi, rpi, mbox);
5345                         mbox->vport = vport;
5346                         lpfc_set_unreg_login_mbx_cmpl(phba, vport, ndlp, mbox);
5347                         if (!mbox->ctx_ndlp) {
5348                                 mempool_free(mbox, phba->mbox_mem_pool);
5349                                 return 1;
5350                         }
5351
5352                         if (mbox->mbox_cmpl == lpfc_sli4_unreg_rpi_cmpl_clr)
5353                                 /*
5354                                  * accept PLOGIs after unreg_rpi_cmpl
5355                                  */
5356                                 acc_plogi = 0;
5357                         if (((ndlp->nlp_DID & Fabric_DID_MASK) !=
5358                             Fabric_DID_MASK) &&
5359                             (!(vport->fc_flag & FC_OFFLINE_MODE)))
5360                                 ndlp->nlp_flag |= NLP_UNREG_INP;
5361
5362                         lpfc_printf_vlog(vport, KERN_INFO,
5363                                          LOG_NODE | LOG_DISCOVERY,
5364                                          "1433 unreg_rpi UNREG x%x on "
5365                                          "NPort x%x deferred flg x%x "
5366                                          "Data:x%px\n",
5367                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5368                                          ndlp->nlp_flag, ndlp);
5369
5370                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5371                         if (rc == MBX_NOT_FINISHED) {
5372                                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5373                                 mempool_free(mbox, phba->mbox_mem_pool);
5374                                 acc_plogi = 1;
5375                                 lpfc_nlp_put(ndlp);
5376                         }
5377                 } else {
5378                         lpfc_printf_vlog(vport, KERN_INFO,
5379                                          LOG_NODE | LOG_DISCOVERY,
5380                                          "1444 Failed to allocate mempool "
5381                                          "unreg_rpi UNREG x%x, "
5382                                          "DID x%x, flag x%x, "
5383                                          "ndlp x%px\n",
5384                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5385                                          ndlp->nlp_flag, ndlp);
5386
5387                         /* Because mempool_alloc failed, we
5388                          * will issue a LOGO here and keep the rpi alive if
5389                          * not unloading.
5390                          */
5391                         if (!(vport->load_flag & FC_UNLOADING)) {
5392                                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5393                                 lpfc_issue_els_logo(vport, ndlp, 0);
5394                                 ndlp->nlp_prev_state = ndlp->nlp_state;
5395                                 lpfc_nlp_set_state(vport, ndlp,
5396                                                    NLP_STE_NPR_NODE);
5397                         }
5398
5399                         return 1;
5400                 }
5401                 lpfc_no_rpi(phba, ndlp);
5402 out:
5403                 if (phba->sli_rev != LPFC_SLI_REV4)
5404                         ndlp->nlp_rpi = 0;
5405                 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
5406                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
5407                 if (acc_plogi)
5408                         ndlp->nlp_flag &= ~NLP_LOGO_ACC;
5409                 return 1;
5410         }
5411         ndlp->nlp_flag &= ~NLP_LOGO_ACC;
5412         return 0;
5413 }
5414
5415 /**
5416  * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
5417  * @phba: pointer to lpfc hba data structure.
5418  *
5419  * This routine is invoked to unregister all the currently registered RPIs
5420  * to the HBA.
5421  **/
5422 void
5423 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
5424 {
5425         struct lpfc_vport **vports;
5426         struct lpfc_nodelist *ndlp;
5427         struct Scsi_Host *shost;
5428         int i;
5429
5430         vports = lpfc_create_vport_work_array(phba);
5431         if (!vports) {
5432                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5433                                 "2884 Vport array allocation failed \n");
5434                 return;
5435         }
5436         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5437                 shost = lpfc_shost_from_vport(vports[i]);
5438                 spin_lock_irq(shost->host_lock);
5439                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
5440                         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
5441                                 /* The mempool_alloc might sleep */
5442                                 spin_unlock_irq(shost->host_lock);
5443                                 lpfc_unreg_rpi(vports[i], ndlp);
5444                                 spin_lock_irq(shost->host_lock);
5445                         }
5446                 }
5447                 spin_unlock_irq(shost->host_lock);
5448         }
5449         lpfc_destroy_vport_work_array(phba, vports);
5450 }
5451
5452 void
5453 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
5454 {
5455         struct lpfc_hba  *phba  = vport->phba;
5456         LPFC_MBOXQ_t     *mbox;
5457         int rc;
5458
5459         if (phba->sli_rev == LPFC_SLI_REV4) {
5460                 lpfc_sli4_unreg_all_rpis(vport);
5461                 return;
5462         }
5463
5464         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5465         if (mbox) {
5466                 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT,
5467                                  mbox);
5468                 mbox->vport = vport;
5469                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5470                 mbox->ctx_ndlp = NULL;
5471                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5472                 if (rc != MBX_TIMEOUT)
5473                         mempool_free(mbox, phba->mbox_mem_pool);
5474
5475                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5476                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5477                                          "1836 Could not issue "
5478                                          "unreg_login(all_rpis) status %d\n",
5479                                          rc);
5480         }
5481 }
5482
5483 void
5484 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
5485 {
5486         struct lpfc_hba  *phba  = vport->phba;
5487         LPFC_MBOXQ_t     *mbox;
5488         int rc;
5489
5490         /* Unreg DID is an SLI3 operation. */
5491         if (phba->sli_rev > LPFC_SLI_REV3)
5492                 return;
5493
5494         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5495         if (mbox) {
5496                 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS,
5497                                mbox);
5498                 mbox->vport = vport;
5499                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5500                 mbox->ctx_ndlp = NULL;
5501                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5502                 if (rc != MBX_TIMEOUT)
5503                         mempool_free(mbox, phba->mbox_mem_pool);
5504
5505                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5506                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5507                                          "1815 Could not issue "
5508                                          "unreg_did (default rpis) status %d\n",
5509                                          rc);
5510         }
5511 }
5512
5513 /*
5514  * Free resources associated with LPFC_NODELIST entry
5515  * so it can be freed.
5516  */
5517 static int
5518 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5519 {
5520         struct lpfc_hba  *phba = vport->phba;
5521         LPFC_MBOXQ_t *mb, *nextmb;
5522
5523         /* Cleanup node for NPort <nlp_DID> */
5524         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5525                          "0900 Cleanup node for NPort x%x "
5526                          "Data: x%x x%x x%x\n",
5527                          ndlp->nlp_DID, ndlp->nlp_flag,
5528                          ndlp->nlp_state, ndlp->nlp_rpi);
5529         lpfc_dequeue_node(vport, ndlp);
5530
5531         /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */
5532
5533         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
5534         if ((mb = phba->sli.mbox_active)) {
5535                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5536                    !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5537                    (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
5538                         mb->ctx_ndlp = NULL;
5539                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5540                 }
5541         }
5542
5543         spin_lock_irq(&phba->hbalock);
5544         /* Cleanup REG_LOGIN completions which are not yet processed */
5545         list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
5546                 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) ||
5547                         (mb->mbox_flag & LPFC_MBX_IMED_UNREG) ||
5548                         (ndlp != (struct lpfc_nodelist *)mb->ctx_ndlp))
5549                         continue;
5550
5551                 mb->ctx_ndlp = NULL;
5552                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5553         }
5554
5555         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
5556                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5557                    !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5558                     (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
5559                         list_del(&mb->list);
5560                         lpfc_mbox_rsrc_cleanup(phba, mb, MBOX_THD_LOCKED);
5561
5562                         /* Don't invoke lpfc_nlp_put. The driver is in
5563                          * lpfc_nlp_release context.
5564                          */
5565                 }
5566         }
5567         spin_unlock_irq(&phba->hbalock);
5568
5569         lpfc_els_abort(phba, ndlp);
5570
5571         spin_lock_irq(&ndlp->lock);
5572         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
5573         spin_unlock_irq(&ndlp->lock);
5574
5575         ndlp->nlp_last_elscmd = 0;
5576         del_timer_sync(&ndlp->nlp_delayfunc);
5577
5578         list_del_init(&ndlp->els_retry_evt.evt_listp);
5579         list_del_init(&ndlp->dev_loss_evt.evt_listp);
5580         list_del_init(&ndlp->recovery_evt.evt_listp);
5581         lpfc_cleanup_vports_rrqs(vport, ndlp);
5582
5583         if (phba->sli_rev == LPFC_SLI_REV4)
5584                 ndlp->nlp_flag |= NLP_RELEASE_RPI;
5585
5586         return 0;
5587 }
5588
5589 static int
5590 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
5591               uint32_t did)
5592 {
5593         D_ID mydid, ndlpdid, matchdid;
5594
5595         if (did == Bcast_DID)
5596                 return 0;
5597
5598         /* First check for Direct match */
5599         if (ndlp->nlp_DID == did)
5600                 return 1;
5601
5602         /* Next check for area/domain identically equals 0 match */
5603         mydid.un.word = vport->fc_myDID;
5604         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
5605                 return 0;
5606         }
5607
5608         matchdid.un.word = did;
5609         ndlpdid.un.word = ndlp->nlp_DID;
5610         if (matchdid.un.b.id == ndlpdid.un.b.id) {
5611                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
5612                     (mydid.un.b.area == matchdid.un.b.area)) {
5613                         /* This code is supposed to match the ID
5614                          * for a private loop device that is
5615                          * connect to fl_port. But we need to
5616                          * check that the port did not just go
5617                          * from pt2pt to fabric or we could end
5618                          * up matching ndlp->nlp_DID 000001 to
5619                          * fabric DID 0x20101
5620                          */
5621                         if ((ndlpdid.un.b.domain == 0) &&
5622                             (ndlpdid.un.b.area == 0)) {
5623                                 if (ndlpdid.un.b.id &&
5624                                     vport->phba->fc_topology ==
5625                                     LPFC_TOPOLOGY_LOOP)
5626                                         return 1;
5627                         }
5628                         return 0;
5629                 }
5630
5631                 matchdid.un.word = ndlp->nlp_DID;
5632                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
5633                     (mydid.un.b.area == ndlpdid.un.b.area)) {
5634                         if ((matchdid.un.b.domain == 0) &&
5635                             (matchdid.un.b.area == 0)) {
5636                                 if (matchdid.un.b.id)
5637                                         return 1;
5638                         }
5639                 }
5640         }
5641         return 0;
5642 }
5643
5644 /* Search for a nodelist entry */
5645 static struct lpfc_nodelist *
5646 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5647 {
5648         struct lpfc_nodelist *ndlp;
5649         uint32_t data1;
5650
5651         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5652                 if (lpfc_matchdid(vport, ndlp, did)) {
5653                         data1 = (((uint32_t)ndlp->nlp_state << 24) |
5654                                  ((uint32_t)ndlp->nlp_xri << 16) |
5655                                  ((uint32_t)ndlp->nlp_type << 8)
5656                                  );
5657                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5658                                          "0929 FIND node DID "
5659                                          "Data: x%px x%x x%x x%x x%x x%px\n",
5660                                          ndlp, ndlp->nlp_DID,
5661                                          ndlp->nlp_flag, data1, ndlp->nlp_rpi,
5662                                          ndlp->active_rrqs_xri_bitmap);
5663                         return ndlp;
5664                 }
5665         }
5666
5667         /* FIND node did <did> NOT FOUND */
5668         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5669                          "0932 FIND node did x%x NOT FOUND.\n", did);
5670         return NULL;
5671 }
5672
5673 struct lpfc_nodelist *
5674 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5675 {
5676         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5677         struct lpfc_nodelist *ndlp;
5678         unsigned long iflags;
5679
5680         spin_lock_irqsave(shost->host_lock, iflags);
5681         ndlp = __lpfc_findnode_did(vport, did);
5682         spin_unlock_irqrestore(shost->host_lock, iflags);
5683         return ndlp;
5684 }
5685
5686 struct lpfc_nodelist *
5687 lpfc_findnode_mapped(struct lpfc_vport *vport)
5688 {
5689         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5690         struct lpfc_nodelist *ndlp;
5691         uint32_t data1;
5692         unsigned long iflags;
5693
5694         spin_lock_irqsave(shost->host_lock, iflags);
5695
5696         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5697                 if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE ||
5698                     ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
5699                         data1 = (((uint32_t)ndlp->nlp_state << 24) |
5700                                  ((uint32_t)ndlp->nlp_xri << 16) |
5701                                  ((uint32_t)ndlp->nlp_type << 8) |
5702                                  ((uint32_t)ndlp->nlp_rpi & 0xff));
5703                         spin_unlock_irqrestore(shost->host_lock, iflags);
5704                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5705                                          "2025 FIND node DID "
5706                                          "Data: x%px x%x x%x x%x x%px\n",
5707                                          ndlp, ndlp->nlp_DID,
5708                                          ndlp->nlp_flag, data1,
5709                                          ndlp->active_rrqs_xri_bitmap);
5710                         return ndlp;
5711                 }
5712         }
5713         spin_unlock_irqrestore(shost->host_lock, iflags);
5714
5715         /* FIND node did <did> NOT FOUND */
5716         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5717                          "2026 FIND mapped did NOT FOUND.\n");
5718         return NULL;
5719 }
5720
5721 struct lpfc_nodelist *
5722 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
5723 {
5724         struct lpfc_nodelist *ndlp;
5725
5726         ndlp = lpfc_findnode_did(vport, did);
5727         if (!ndlp) {
5728                 if (vport->phba->nvmet_support)
5729                         return NULL;
5730                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
5731                     lpfc_rscn_payload_check(vport, did) == 0)
5732                         return NULL;
5733                 ndlp = lpfc_nlp_init(vport, did);
5734                 if (!ndlp)
5735                         return NULL;
5736                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5737
5738                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5739                                  "6453 Setup New Node 2B_DISC x%x "
5740                                  "Data:x%x x%x x%x\n",
5741                                  ndlp->nlp_DID, ndlp->nlp_flag,
5742                                  ndlp->nlp_state, vport->fc_flag);
5743
5744                 spin_lock_irq(&ndlp->lock);
5745                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5746                 spin_unlock_irq(&ndlp->lock);
5747                 return ndlp;
5748         }
5749
5750         /* The NVME Target does not want to actively manage an rport.
5751          * The goal is to allow the target to reset its state and clear
5752          * pending IO in preparation for the initiator to recover.
5753          */
5754         if ((vport->fc_flag & FC_RSCN_MODE) &&
5755             !(vport->fc_flag & FC_NDISC_ACTIVE)) {
5756                 if (lpfc_rscn_payload_check(vport, did)) {
5757
5758                         /* Since this node is marked for discovery,
5759                          * delay timeout is not needed.
5760                          */
5761                         lpfc_cancel_retry_delay_tmo(vport, ndlp);
5762
5763                         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5764                                          "6455 Setup RSCN Node 2B_DISC x%x "
5765                                          "Data:x%x x%x x%x\n",
5766                                          ndlp->nlp_DID, ndlp->nlp_flag,
5767                                          ndlp->nlp_state, vport->fc_flag);
5768
5769                         /* NVME Target mode waits until rport is known to be
5770                          * impacted by the RSCN before it transitions.  No
5771                          * active management - just go to NPR provided the
5772                          * node had a valid login.
5773                          */
5774                         if (vport->phba->nvmet_support)
5775                                 return ndlp;
5776
5777                         /* If we've already received a PLOGI from this NPort
5778                          * we don't need to try to discover it again.
5779                          */
5780                         if (ndlp->nlp_flag & NLP_RCV_PLOGI &&
5781                             !(ndlp->nlp_type &
5782                              (NLP_FCP_TARGET | NLP_NVME_TARGET)))
5783                                 return NULL;
5784
5785                         if (ndlp->nlp_state > NLP_STE_UNUSED_NODE &&
5786                             ndlp->nlp_state < NLP_STE_PRLI_ISSUE) {
5787                                 lpfc_disc_state_machine(vport, ndlp, NULL,
5788                                                         NLP_EVT_DEVICE_RECOVERY);
5789                         }
5790
5791                         spin_lock_irq(&ndlp->lock);
5792                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5793                         spin_unlock_irq(&ndlp->lock);
5794                 } else {
5795                         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5796                                          "6456 Skip Setup RSCN Node x%x "
5797                                          "Data:x%x x%x x%x\n",
5798                                          ndlp->nlp_DID, ndlp->nlp_flag,
5799                                          ndlp->nlp_state, vport->fc_flag);
5800                         ndlp = NULL;
5801                 }
5802         } else {
5803                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5804                                  "6457 Setup Active Node 2B_DISC x%x "
5805                                  "Data:x%x x%x x%x\n",
5806                                  ndlp->nlp_DID, ndlp->nlp_flag,
5807                                  ndlp->nlp_state, vport->fc_flag);
5808
5809                 /* If the initiator received a PLOGI from this NPort or if the
5810                  * initiator is already in the process of discovery on it,
5811                  * there's no need to try to discover it again.
5812                  */
5813                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
5814                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5815                     (!vport->phba->nvmet_support &&
5816                      ndlp->nlp_flag & NLP_RCV_PLOGI))
5817                         return NULL;
5818
5819                 if (vport->phba->nvmet_support)
5820                         return ndlp;
5821
5822                 /* Moving to NPR state clears unsolicited flags and
5823                  * allows for rediscovery
5824                  */
5825                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5826
5827                 spin_lock_irq(&ndlp->lock);
5828                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5829                 spin_unlock_irq(&ndlp->lock);
5830         }
5831         return ndlp;
5832 }
5833
5834 /* Build a list of nodes to discover based on the loopmap */
5835 void
5836 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
5837 {
5838         struct lpfc_hba  *phba = vport->phba;
5839         int j;
5840         uint32_t alpa, index;
5841
5842         if (!lpfc_is_link_up(phba))
5843                 return;
5844
5845         if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
5846                 return;
5847
5848         /* Check for loop map present or not */
5849         if (phba->alpa_map[0]) {
5850                 for (j = 1; j <= phba->alpa_map[0]; j++) {
5851                         alpa = phba->alpa_map[j];
5852                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
5853                                 continue;
5854                         lpfc_setup_disc_node(vport, alpa);
5855                 }
5856         } else {
5857                 /* No alpamap, so try all alpa's */
5858                 for (j = 0; j < FC_MAXLOOP; j++) {
5859                         /* If cfg_scan_down is set, start from highest
5860                          * ALPA (0xef) to lowest (0x1).
5861                          */
5862                         if (vport->cfg_scan_down)
5863                                 index = j;
5864                         else
5865                                 index = FC_MAXLOOP - j - 1;
5866                         alpa = lpfcAlpaArray[index];
5867                         if ((vport->fc_myDID & 0xff) == alpa)
5868                                 continue;
5869                         lpfc_setup_disc_node(vport, alpa);
5870                 }
5871         }
5872         return;
5873 }
5874
5875 /* SLI3 only */
5876 void
5877 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
5878 {
5879         LPFC_MBOXQ_t *mbox;
5880         struct lpfc_sli *psli = &phba->sli;
5881         struct lpfc_sli_ring *extra_ring = &psli->sli3_ring[LPFC_EXTRA_RING];
5882         struct lpfc_sli_ring *fcp_ring   = &psli->sli3_ring[LPFC_FCP_RING];
5883         int  rc;
5884
5885         /*
5886          * if it's not a physical port or if we already send
5887          * clear_la then don't send it.
5888          */
5889         if ((phba->link_state >= LPFC_CLEAR_LA) ||
5890             (vport->port_type != LPFC_PHYSICAL_PORT) ||
5891                 (phba->sli_rev == LPFC_SLI_REV4))
5892                 return;
5893
5894                         /* Link up discovery */
5895         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
5896                 phba->link_state = LPFC_CLEAR_LA;
5897                 lpfc_clear_la(phba, mbox);
5898                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
5899                 mbox->vport = vport;
5900                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5901                 if (rc == MBX_NOT_FINISHED) {
5902                         mempool_free(mbox, phba->mbox_mem_pool);
5903                         lpfc_disc_flush_list(vport);
5904                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5905                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5906                         phba->link_state = LPFC_HBA_ERROR;
5907                 }
5908         }
5909 }
5910
5911 /* Reg_vpi to tell firmware to resume normal operations */
5912 void
5913 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
5914 {
5915         LPFC_MBOXQ_t *regvpimbox;
5916
5917         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5918         if (regvpimbox) {
5919                 lpfc_reg_vpi(vport, regvpimbox);
5920                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
5921                 regvpimbox->vport = vport;
5922                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
5923                                         == MBX_NOT_FINISHED) {
5924                         mempool_free(regvpimbox, phba->mbox_mem_pool);
5925                 }
5926         }
5927 }
5928
5929 /* Start Link up / RSCN discovery on NPR nodes */
5930 void
5931 lpfc_disc_start(struct lpfc_vport *vport)
5932 {
5933         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5934         struct lpfc_hba  *phba = vport->phba;
5935         uint32_t num_sent;
5936         uint32_t clear_la_pending;
5937
5938         if (!lpfc_is_link_up(phba)) {
5939                 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
5940                                  "3315 Link is not up %x\n",
5941                                  phba->link_state);
5942                 return;
5943         }
5944
5945         if (phba->link_state == LPFC_CLEAR_LA)
5946                 clear_la_pending = 1;
5947         else
5948                 clear_la_pending = 0;
5949
5950         if (vport->port_state < LPFC_VPORT_READY)
5951                 vport->port_state = LPFC_DISC_AUTH;
5952
5953         lpfc_set_disctmo(vport);
5954
5955         vport->fc_prevDID = vport->fc_myDID;
5956         vport->num_disc_nodes = 0;
5957
5958         /* Start Discovery state <hba_state> */
5959         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5960                          "0202 Start Discovery port state x%x "
5961                          "flg x%x Data: x%x x%x x%x\n",
5962                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
5963                          vport->fc_adisc_cnt, vport->fc_npr_cnt);
5964
5965         /* First do ADISCs - if any */
5966         num_sent = lpfc_els_disc_adisc(vport);
5967
5968         if (num_sent)
5969                 return;
5970
5971         /* Register the VPI for SLI3, NPIV only. */
5972         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
5973             !(vport->fc_flag & FC_PT2PT) &&
5974             !(vport->fc_flag & FC_RSCN_MODE) &&
5975             (phba->sli_rev < LPFC_SLI_REV4)) {
5976                 lpfc_issue_clear_la(phba, vport);
5977                 lpfc_issue_reg_vpi(phba, vport);
5978                 return;
5979         }
5980
5981         /*
5982          * For SLI2, we need to set port_state to READY and continue
5983          * discovery.
5984          */
5985         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
5986                 /* If we get here, there is nothing to ADISC */
5987                 lpfc_issue_clear_la(phba, vport);
5988
5989                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
5990                         vport->num_disc_nodes = 0;
5991                         /* go thru NPR nodes and issue ELS PLOGIs */
5992                         if (vport->fc_npr_cnt)
5993                                 lpfc_els_disc_plogi(vport);
5994
5995                         if (!vport->num_disc_nodes) {
5996                                 spin_lock_irq(shost->host_lock);
5997                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
5998                                 spin_unlock_irq(shost->host_lock);
5999                                 lpfc_can_disctmo(vport);
6000                         }
6001                 }
6002                 vport->port_state = LPFC_VPORT_READY;
6003         } else {
6004                 /* Next do PLOGIs - if any */
6005                 num_sent = lpfc_els_disc_plogi(vport);
6006
6007                 if (num_sent)
6008                         return;
6009
6010                 if (vport->fc_flag & FC_RSCN_MODE) {
6011                         /* Check to see if more RSCNs came in while we
6012                          * were processing this one.
6013                          */
6014                         if ((vport->fc_rscn_id_cnt == 0) &&
6015                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
6016                                 spin_lock_irq(shost->host_lock);
6017                                 vport->fc_flag &= ~FC_RSCN_MODE;
6018                                 spin_unlock_irq(shost->host_lock);
6019                                 lpfc_can_disctmo(vport);
6020                         } else
6021                                 lpfc_els_handle_rscn(vport);
6022                 }
6023         }
6024         return;
6025 }
6026
6027 /*
6028  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
6029  *  ring the match the sppecified nodelist.
6030  */
6031 static void
6032 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
6033 {
6034         LIST_HEAD(completions);
6035         struct lpfc_iocbq    *iocb, *next_iocb;
6036         struct lpfc_sli_ring *pring;
6037         u32 ulp_command;
6038
6039         pring = lpfc_phba_elsring(phba);
6040         if (unlikely(!pring))
6041                 return;
6042
6043         /* Error matching iocb on txq or txcmplq
6044          * First check the txq.
6045          */
6046         spin_lock_irq(&phba->hbalock);
6047         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
6048                 if (iocb->ndlp != ndlp)
6049                         continue;
6050
6051                 ulp_command = get_job_cmnd(phba, iocb);
6052
6053                 if (ulp_command == CMD_ELS_REQUEST64_CR ||
6054                     ulp_command == CMD_XMIT_ELS_RSP64_CX) {
6055
6056                         list_move_tail(&iocb->list, &completions);
6057                 }
6058         }
6059
6060         /* Next check the txcmplq */
6061         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
6062                 if (iocb->ndlp != ndlp)
6063                         continue;
6064
6065                 ulp_command = get_job_cmnd(phba, iocb);
6066
6067                 if (ulp_command == CMD_ELS_REQUEST64_CR ||
6068                     ulp_command == CMD_XMIT_ELS_RSP64_CX) {
6069                         lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL);
6070                 }
6071         }
6072         spin_unlock_irq(&phba->hbalock);
6073
6074         /* Make sure HBA is alive */
6075         lpfc_issue_hb_tmo(phba);
6076
6077         /* Cancel all the IOCBs from the completions list */
6078         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
6079                               IOERR_SLI_ABORTED);
6080 }
6081
6082 static void
6083 lpfc_disc_flush_list(struct lpfc_vport *vport)
6084 {
6085         struct lpfc_nodelist *ndlp, *next_ndlp;
6086         struct lpfc_hba *phba = vport->phba;
6087
6088         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
6089                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6090                                          nlp_listp) {
6091                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
6092                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
6093                                 lpfc_free_tx(phba, ndlp);
6094                         }
6095                 }
6096         }
6097 }
6098
6099 /*
6100  * lpfc_notify_xport_npr - notifies xport of node disappearance
6101  * @vport: Pointer to Virtual Port object.
6102  *
6103  * Transitions all ndlps to NPR state.  When lpfc_nlp_set_state
6104  * calls lpfc_nlp_state_cleanup, the ndlp->rport is unregistered
6105  * and transport notified that the node is gone.
6106  * Return Code:
6107  *      none
6108  */
6109 static void
6110 lpfc_notify_xport_npr(struct lpfc_vport *vport)
6111 {
6112         struct lpfc_nodelist *ndlp, *next_ndlp;
6113
6114         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6115                                  nlp_listp) {
6116                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
6117         }
6118 }
6119 void
6120 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
6121 {
6122         lpfc_els_flush_rscn(vport);
6123         lpfc_els_flush_cmd(vport);
6124         lpfc_disc_flush_list(vport);
6125         if (pci_channel_offline(vport->phba->pcidev))
6126                 lpfc_notify_xport_npr(vport);
6127 }
6128
6129 /*****************************************************************************/
6130 /*
6131  * NAME:     lpfc_disc_timeout
6132  *
6133  * FUNCTION: Fibre Channel driver discovery timeout routine.
6134  *
6135  * EXECUTION ENVIRONMENT: interrupt only
6136  *
6137  * CALLED FROM:
6138  *      Timer function
6139  *
6140  * RETURNS:
6141  *      none
6142  */
6143 /*****************************************************************************/
6144 void
6145 lpfc_disc_timeout(struct timer_list *t)
6146 {
6147         struct lpfc_vport *vport = from_timer(vport, t, fc_disctmo);
6148         struct lpfc_hba   *phba = vport->phba;
6149         uint32_t tmo_posted;
6150         unsigned long flags = 0;
6151
6152         if (unlikely(!phba))
6153                 return;
6154
6155         spin_lock_irqsave(&vport->work_port_lock, flags);
6156         tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
6157         if (!tmo_posted)
6158                 vport->work_port_events |= WORKER_DISC_TMO;
6159         spin_unlock_irqrestore(&vport->work_port_lock, flags);
6160
6161         if (!tmo_posted)
6162                 lpfc_worker_wake_up(phba);
6163         return;
6164 }
6165
6166 static void
6167 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
6168 {
6169         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6170         struct lpfc_hba  *phba = vport->phba;
6171         struct lpfc_sli  *psli = &phba->sli;
6172         struct lpfc_nodelist *ndlp, *next_ndlp;
6173         LPFC_MBOXQ_t *initlinkmbox;
6174         int rc, clrlaerr = 0;
6175
6176         if (!(vport->fc_flag & FC_DISC_TMO))
6177                 return;
6178
6179         spin_lock_irq(shost->host_lock);
6180         vport->fc_flag &= ~FC_DISC_TMO;
6181         spin_unlock_irq(shost->host_lock);
6182
6183         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6184                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
6185                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
6186
6187         switch (vport->port_state) {
6188
6189         case LPFC_LOCAL_CFG_LINK:
6190                 /*
6191                  * port_state is identically  LPFC_LOCAL_CFG_LINK while
6192                  * waiting for FAN timeout
6193                  */
6194                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
6195                                  "0221 FAN timeout\n");
6196
6197                 /* Start discovery by sending FLOGI, clean up old rpis */
6198                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6199                                          nlp_listp) {
6200                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
6201                                 continue;
6202                         if (ndlp->nlp_type & NLP_FABRIC) {
6203                                 /* Clean up the ndlp on Fabric connections */
6204                                 lpfc_drop_node(vport, ndlp);
6205
6206                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
6207                                 /* Fail outstanding IO now since device
6208                                  * is marked for PLOGI.
6209                                  */
6210                                 lpfc_unreg_rpi(vport, ndlp);
6211                         }
6212                 }
6213                 if (vport->port_state != LPFC_FLOGI) {
6214                         if (phba->sli_rev <= LPFC_SLI_REV3)
6215                                 lpfc_initial_flogi(vport);
6216                         else
6217                                 lpfc_issue_init_vfi(vport);
6218                         return;
6219                 }
6220                 break;
6221
6222         case LPFC_FDISC:
6223         case LPFC_FLOGI:
6224         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
6225                 /* Initial FLOGI timeout */
6226                 lpfc_printf_vlog(vport, KERN_ERR,
6227                                  LOG_TRACE_EVENT,
6228                                  "0222 Initial %s timeout\n",
6229                                  vport->vpi ? "FDISC" : "FLOGI");
6230
6231                 /* Assume no Fabric and go on with discovery.
6232                  * Check for outstanding ELS FLOGI to abort.
6233                  */
6234
6235                 /* FLOGI failed, so just use loop map to make discovery list */
6236                 lpfc_disc_list_loopmap(vport);
6237
6238                 /* Start discovery */
6239                 lpfc_disc_start(vport);
6240                 break;
6241
6242         case LPFC_FABRIC_CFG_LINK:
6243         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
6244            NameServer login */
6245                 lpfc_printf_vlog(vport, KERN_ERR,
6246                                  LOG_TRACE_EVENT,
6247                                  "0223 Timeout while waiting for "
6248                                  "NameServer login\n");
6249                 /* Next look for NameServer ndlp */
6250                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
6251                 if (ndlp)
6252                         lpfc_els_abort(phba, ndlp);
6253
6254                 /* ReStart discovery */
6255                 goto restart_disc;
6256
6257         case LPFC_NS_QRY:
6258         /* Check for wait for NameServer Rsp timeout */
6259                 lpfc_printf_vlog(vport, KERN_ERR,
6260                                  LOG_TRACE_EVENT,
6261                                  "0224 NameServer Query timeout "
6262                                  "Data: x%x x%x\n",
6263                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
6264
6265                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
6266                         /* Try it one more time */
6267                         vport->fc_ns_retry++;
6268                         vport->gidft_inp = 0;
6269                         rc = lpfc_issue_gidft(vport);
6270                         if (rc == 0)
6271                                 break;
6272                 }
6273                 vport->fc_ns_retry = 0;
6274
6275 restart_disc:
6276                 /*
6277                  * Discovery is over.
6278                  * set port_state to PORT_READY if SLI2.
6279                  * cmpl_reg_vpi will set port_state to READY for SLI3.
6280                  */
6281                 if (phba->sli_rev < LPFC_SLI_REV4) {
6282                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
6283                                 lpfc_issue_reg_vpi(phba, vport);
6284                         else  {
6285                                 lpfc_issue_clear_la(phba, vport);
6286                                 vport->port_state = LPFC_VPORT_READY;
6287                         }
6288                 }
6289
6290                 /* Setup and issue mailbox INITIALIZE LINK command */
6291                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6292                 if (!initlinkmbox) {
6293                         lpfc_printf_vlog(vport, KERN_ERR,
6294                                          LOG_TRACE_EVENT,
6295                                          "0206 Device Discovery "
6296                                          "completion error\n");
6297                         phba->link_state = LPFC_HBA_ERROR;
6298                         break;
6299                 }
6300
6301                 lpfc_linkdown(phba);
6302                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
6303                                phba->cfg_link_speed);
6304                 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
6305                 initlinkmbox->vport = vport;
6306                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
6307                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
6308                 lpfc_set_loopback_flag(phba);
6309                 if (rc == MBX_NOT_FINISHED)
6310                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
6311
6312                 break;
6313
6314         case LPFC_DISC_AUTH:
6315         /* Node Authentication timeout */
6316                 lpfc_printf_vlog(vport, KERN_ERR,
6317                                  LOG_TRACE_EVENT,
6318                                  "0227 Node Authentication timeout\n");
6319                 lpfc_disc_flush_list(vport);
6320
6321                 /*
6322                  * set port_state to PORT_READY if SLI2.
6323                  * cmpl_reg_vpi will set port_state to READY for SLI3.
6324                  */
6325                 if (phba->sli_rev < LPFC_SLI_REV4) {
6326                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
6327                                 lpfc_issue_reg_vpi(phba, vport);
6328                         else  { /* NPIV Not enabled */
6329                                 lpfc_issue_clear_la(phba, vport);
6330                                 vport->port_state = LPFC_VPORT_READY;
6331                         }
6332                 }
6333                 break;
6334
6335         case LPFC_VPORT_READY:
6336                 if (vport->fc_flag & FC_RSCN_MODE) {
6337                         lpfc_printf_vlog(vport, KERN_ERR,
6338                                          LOG_TRACE_EVENT,
6339                                          "0231 RSCN timeout Data: x%x "
6340                                          "x%x x%x x%x\n",
6341                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY,
6342                                          vport->port_state, vport->gidft_inp);
6343
6344                         /* Cleanup any outstanding ELS commands */
6345                         lpfc_els_flush_cmd(vport);
6346
6347                         lpfc_els_flush_rscn(vport);
6348                         lpfc_disc_flush_list(vport);
6349                 }
6350                 break;
6351
6352         default:
6353                 lpfc_printf_vlog(vport, KERN_ERR,
6354                                  LOG_TRACE_EVENT,
6355                                  "0273 Unexpected discovery timeout, "
6356                                  "vport State x%x\n", vport->port_state);
6357                 break;
6358         }
6359
6360         switch (phba->link_state) {
6361         case LPFC_CLEAR_LA:
6362                                 /* CLEAR LA timeout */
6363                 lpfc_printf_vlog(vport, KERN_ERR,
6364                                  LOG_TRACE_EVENT,
6365                                  "0228 CLEAR LA timeout\n");
6366                 clrlaerr = 1;
6367                 break;
6368
6369         case LPFC_LINK_UP:
6370                 lpfc_issue_clear_la(phba, vport);
6371                 fallthrough;
6372         case LPFC_LINK_UNKNOWN:
6373         case LPFC_WARM_START:
6374         case LPFC_INIT_START:
6375         case LPFC_INIT_MBX_CMDS:
6376         case LPFC_LINK_DOWN:
6377         case LPFC_HBA_ERROR:
6378                 lpfc_printf_vlog(vport, KERN_ERR,
6379                                  LOG_TRACE_EVENT,
6380                                  "0230 Unexpected timeout, hba link "
6381                                  "state x%x\n", phba->link_state);
6382                 clrlaerr = 1;
6383                 break;
6384
6385         case LPFC_HBA_READY:
6386                 break;
6387         }
6388
6389         if (clrlaerr) {
6390                 lpfc_disc_flush_list(vport);
6391                 if (phba->sli_rev != LPFC_SLI_REV4) {
6392                         psli->sli3_ring[(LPFC_EXTRA_RING)].flag &=
6393                                 ~LPFC_STOP_IOCB_EVENT;
6394                         psli->sli3_ring[LPFC_FCP_RING].flag &=
6395                                 ~LPFC_STOP_IOCB_EVENT;
6396                 }
6397                 vport->port_state = LPFC_VPORT_READY;
6398         }
6399         return;
6400 }
6401
6402 /*
6403  * This routine handles processing a NameServer REG_LOGIN mailbox
6404  * command upon completion. It is setup in the LPFC_MBOXQ
6405  * as the completion routine when the command is
6406  * handed off to the SLI layer.
6407  */
6408 void
6409 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
6410 {
6411         MAILBOX_t *mb = &pmb->u.mb;
6412         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
6413         struct lpfc_vport    *vport = pmb->vport;
6414
6415         pmb->ctx_ndlp = NULL;
6416
6417         if (phba->sli_rev < LPFC_SLI_REV4)
6418                 ndlp->nlp_rpi = mb->un.varWords[0];
6419         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
6420         ndlp->nlp_type |= NLP_FABRIC;
6421         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
6422         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
6423                          "0004 rpi:%x DID:%x flg:%x %d x%px\n",
6424                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
6425                          kref_read(&ndlp->kref),
6426                          ndlp);
6427         /*
6428          * Start issuing Fabric-Device Management Interface (FDMI) command to
6429          * 0xfffffa (FDMI well known port).
6430          * DHBA -> DPRT -> RHBA -> RPA  (physical port)
6431          * DPRT -> RPRT (vports)
6432          */
6433         if (vport->port_type == LPFC_PHYSICAL_PORT) {
6434                 phba->link_flag &= ~LS_CT_VEN_RPA; /* For extra Vendor RPA */
6435                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA, 0);
6436         } else {
6437                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DPRT, 0);
6438         }
6439
6440
6441         /* decrement the node reference count held for this callback
6442          * function.
6443          */
6444         lpfc_nlp_put(ndlp);
6445         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
6446         return;
6447 }
6448
6449 static int
6450 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
6451 {
6452         uint16_t *rpi = param;
6453
6454         return ndlp->nlp_rpi == *rpi;
6455 }
6456
6457 static int
6458 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
6459 {
6460         return memcmp(&ndlp->nlp_portname, param,
6461                       sizeof(ndlp->nlp_portname)) == 0;
6462 }
6463
6464 static struct lpfc_nodelist *
6465 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
6466 {
6467         struct lpfc_nodelist *ndlp;
6468
6469         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
6470                 if (filter(ndlp, param)) {
6471                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6472                                          "3185 FIND node filter %ps DID "
6473                                          "ndlp x%px did x%x flg x%x st x%x "
6474                                          "xri x%x type x%x rpi x%x\n",
6475                                          filter, ndlp, ndlp->nlp_DID,
6476                                          ndlp->nlp_flag, ndlp->nlp_state,
6477                                          ndlp->nlp_xri, ndlp->nlp_type,
6478                                          ndlp->nlp_rpi);
6479                         return ndlp;
6480                 }
6481         }
6482         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6483                          "3186 FIND node filter %ps NOT FOUND.\n", filter);
6484         return NULL;
6485 }
6486
6487 /*
6488  * This routine looks up the ndlp lists for the given RPI. If rpi found it
6489  * returns the node list element pointer else return NULL.
6490  */
6491 struct lpfc_nodelist *
6492 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6493 {
6494         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
6495 }
6496
6497 /*
6498  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
6499  * returns the node element list pointer else return NULL.
6500  */
6501 struct lpfc_nodelist *
6502 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
6503 {
6504         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6505         struct lpfc_nodelist *ndlp;
6506
6507         spin_lock_irq(shost->host_lock);
6508         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
6509         spin_unlock_irq(shost->host_lock);
6510         return ndlp;
6511 }
6512
6513 /*
6514  * This routine looks up the ndlp lists for the given RPI. If the rpi
6515  * is found, the routine returns the node element list pointer else
6516  * return NULL.
6517  */
6518 struct lpfc_nodelist *
6519 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6520 {
6521         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6522         struct lpfc_nodelist *ndlp;
6523         unsigned long flags;
6524
6525         spin_lock_irqsave(shost->host_lock, flags);
6526         ndlp = __lpfc_findnode_rpi(vport, rpi);
6527         spin_unlock_irqrestore(shost->host_lock, flags);
6528         return ndlp;
6529 }
6530
6531 /**
6532  * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
6533  * @phba: pointer to lpfc hba data structure.
6534  * @vpi: the physical host virtual N_Port identifier.
6535  *
6536  * This routine finds a vport on a HBA (referred by @phba) through a
6537  * @vpi. The function walks the HBA's vport list and returns the address
6538  * of the vport with the matching @vpi.
6539  *
6540  * Return code
6541  *    NULL - No vport with the matching @vpi found
6542  *    Otherwise - Address to the vport with the matching @vpi.
6543  **/
6544 struct lpfc_vport *
6545 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
6546 {
6547         struct lpfc_vport *vport;
6548         unsigned long flags;
6549         int i = 0;
6550
6551         /* The physical ports are always vpi 0 - translate is unnecessary. */
6552         if (vpi > 0) {
6553                 /*
6554                  * Translate the physical vpi to the logical vpi.  The
6555                  * vport stores the logical vpi.
6556                  */
6557                 for (i = 0; i <= phba->max_vpi; i++) {
6558                         if (vpi == phba->vpi_ids[i])
6559                                 break;
6560                 }
6561
6562                 if (i > phba->max_vpi) {
6563                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6564                                         "2936 Could not find Vport mapped "
6565                                         "to vpi %d\n", vpi);
6566                         return NULL;
6567                 }
6568         }
6569
6570         spin_lock_irqsave(&phba->port_list_lock, flags);
6571         list_for_each_entry(vport, &phba->port_list, listentry) {
6572                 if (vport->vpi == i) {
6573                         spin_unlock_irqrestore(&phba->port_list_lock, flags);
6574                         return vport;
6575                 }
6576         }
6577         spin_unlock_irqrestore(&phba->port_list_lock, flags);
6578         return NULL;
6579 }
6580
6581 struct lpfc_nodelist *
6582 lpfc_nlp_init(struct lpfc_vport *vport, uint32_t did)
6583 {
6584         struct lpfc_nodelist *ndlp;
6585         int rpi = LPFC_RPI_ALLOC_ERROR;
6586
6587         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6588                 rpi = lpfc_sli4_alloc_rpi(vport->phba);
6589                 if (rpi == LPFC_RPI_ALLOC_ERROR)
6590                         return NULL;
6591         }
6592
6593         ndlp = mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
6594         if (!ndlp) {
6595                 if (vport->phba->sli_rev == LPFC_SLI_REV4)
6596                         lpfc_sli4_free_rpi(vport->phba, rpi);
6597                 return NULL;
6598         }
6599
6600         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
6601
6602         spin_lock_init(&ndlp->lock);
6603
6604         lpfc_initialize_node(vport, ndlp, did);
6605         INIT_LIST_HEAD(&ndlp->nlp_listp);
6606         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6607                 ndlp->nlp_rpi = rpi;
6608                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
6609                                  "0007 Init New ndlp x%px, rpi:x%x DID:%x "
6610                                  "flg:x%x refcnt:%d\n",
6611                                  ndlp, ndlp->nlp_rpi, ndlp->nlp_DID,
6612                                  ndlp->nlp_flag, kref_read(&ndlp->kref));
6613
6614                 ndlp->active_rrqs_xri_bitmap =
6615                                 mempool_alloc(vport->phba->active_rrq_pool,
6616                                               GFP_KERNEL);
6617                 if (ndlp->active_rrqs_xri_bitmap)
6618                         memset(ndlp->active_rrqs_xri_bitmap, 0,
6619                                ndlp->phba->cfg_rrq_xri_bitmap_sz);
6620         }
6621
6622
6623
6624         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
6625                 "node init:       did:x%x",
6626                 ndlp->nlp_DID, 0, 0);
6627
6628         return ndlp;
6629 }
6630
6631 /* This routine releases all resources associated with a specifc NPort's ndlp
6632  * and mempool_free's the nodelist.
6633  */
6634 static void
6635 lpfc_nlp_release(struct kref *kref)
6636 {
6637         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
6638                                                   kref);
6639         struct lpfc_vport *vport = ndlp->vport;
6640
6641         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6642                 "node release:    did:x%x flg:x%x type:x%x",
6643                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
6644
6645         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6646                          "0279 %s: ndlp: x%px did %x refcnt:%d rpi:%x\n",
6647                          __func__, ndlp, ndlp->nlp_DID,
6648                          kref_read(&ndlp->kref), ndlp->nlp_rpi);
6649
6650         /* remove ndlp from action. */
6651         lpfc_cancel_retry_delay_tmo(vport, ndlp);
6652         lpfc_cleanup_node(vport, ndlp);
6653
6654         /* Not all ELS transactions have registered the RPI with the port.
6655          * In these cases the rpi usage is temporary and the node is
6656          * released when the WQE is completed.  Catch this case to free the
6657          * RPI to the pool.  Because this node is in the release path, a lock
6658          * is unnecessary.  All references are gone and the node has been
6659          * dequeued.
6660          */
6661         if (ndlp->nlp_flag & NLP_RELEASE_RPI) {
6662                 if (ndlp->nlp_rpi != LPFC_RPI_ALLOC_ERROR &&
6663                     !(ndlp->nlp_flag & (NLP_RPI_REGISTERED | NLP_UNREG_INP))) {
6664                         lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi);
6665                         ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
6666                 }
6667         }
6668
6669         /* The node is not freed back to memory, it is released to a pool so
6670          * the node fields need to be cleaned up.
6671          */
6672         ndlp->vport = NULL;
6673         ndlp->nlp_state = NLP_STE_FREED_NODE;
6674         ndlp->nlp_flag = 0;
6675         ndlp->fc4_xpt_flags = 0;
6676
6677         /* free ndlp memory for final ndlp release */
6678         if (ndlp->phba->sli_rev == LPFC_SLI_REV4)
6679                 mempool_free(ndlp->active_rrqs_xri_bitmap,
6680                                 ndlp->phba->active_rrq_pool);
6681         mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
6682 }
6683
6684 /* This routine bumps the reference count for a ndlp structure to ensure
6685  * that one discovery thread won't free a ndlp while another discovery thread
6686  * is using it.
6687  */
6688 struct lpfc_nodelist *
6689 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
6690 {
6691         unsigned long flags;
6692
6693         if (ndlp) {
6694                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6695                         "node get:        did:x%x flg:x%x refcnt:x%x",
6696                         ndlp->nlp_DID, ndlp->nlp_flag,
6697                         kref_read(&ndlp->kref));
6698
6699                 /* The check of ndlp usage to prevent incrementing the
6700                  * ndlp reference count that is in the process of being
6701                  * released.
6702                  */
6703                 spin_lock_irqsave(&ndlp->lock, flags);
6704                 if (!kref_get_unless_zero(&ndlp->kref)) {
6705                         spin_unlock_irqrestore(&ndlp->lock, flags);
6706                         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
6707                                 "0276 %s: ndlp:x%px refcnt:%d\n",
6708                                 __func__, (void *)ndlp, kref_read(&ndlp->kref));
6709                         return NULL;
6710                 }
6711                 spin_unlock_irqrestore(&ndlp->lock, flags);
6712         } else {
6713                 WARN_ONCE(!ndlp, "**** %s, get ref on NULL ndlp!", __func__);
6714         }
6715
6716         return ndlp;
6717 }
6718
6719 /* This routine decrements the reference count for a ndlp structure. If the
6720  * count goes to 0, this indicates the associated nodelist should be freed.
6721  */
6722 int
6723 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
6724 {
6725         if (ndlp) {
6726                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6727                                 "node put:        did:x%x flg:x%x refcnt:x%x",
6728                                 ndlp->nlp_DID, ndlp->nlp_flag,
6729                                 kref_read(&ndlp->kref));
6730         } else {
6731                 WARN_ONCE(!ndlp, "**** %s, put ref on NULL ndlp!", __func__);
6732         }
6733
6734         return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0;
6735 }
6736
6737 /**
6738  * lpfc_fcf_inuse - Check if FCF can be unregistered.
6739  * @phba: Pointer to hba context object.
6740  *
6741  * This function iterate through all FC nodes associated
6742  * will all vports to check if there is any node with
6743  * fc_rports associated with it. If there is an fc_rport
6744  * associated with the node, then the node is either in
6745  * discovered state or its devloss_timer is pending.
6746  */
6747 static int
6748 lpfc_fcf_inuse(struct lpfc_hba *phba)
6749 {
6750         struct lpfc_vport **vports;
6751         int i, ret = 0;
6752         struct lpfc_nodelist *ndlp;
6753         struct Scsi_Host  *shost;
6754
6755         vports = lpfc_create_vport_work_array(phba);
6756
6757         /* If driver cannot allocate memory, indicate fcf is in use */
6758         if (!vports)
6759                 return 1;
6760
6761         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6762                 shost = lpfc_shost_from_vport(vports[i]);
6763                 spin_lock_irq(shost->host_lock);
6764                 /*
6765                  * IF the CVL_RCVD bit is not set then we have sent the
6766                  * flogi.
6767                  * If dev_loss fires while we are waiting we do not want to
6768                  * unreg the fcf.
6769                  */
6770                 if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) {
6771                         spin_unlock_irq(shost->host_lock);
6772                         ret =  1;
6773                         goto out;
6774                 }
6775                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
6776                         if (ndlp->rport &&
6777                           (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
6778                                 ret = 1;
6779                                 spin_unlock_irq(shost->host_lock);
6780                                 goto out;
6781                         } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
6782                                 ret = 1;
6783                                 lpfc_printf_log(phba, KERN_INFO,
6784                                                 LOG_NODE | LOG_DISCOVERY,
6785                                                 "2624 RPI %x DID %x flag %x "
6786                                                 "still logged in\n",
6787                                                 ndlp->nlp_rpi, ndlp->nlp_DID,
6788                                                 ndlp->nlp_flag);
6789                         }
6790                 }
6791                 spin_unlock_irq(shost->host_lock);
6792         }
6793 out:
6794         lpfc_destroy_vport_work_array(phba, vports);
6795         return ret;
6796 }
6797
6798 /**
6799  * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
6800  * @phba: Pointer to hba context object.
6801  * @mboxq: Pointer to mailbox object.
6802  *
6803  * This function frees memory associated with the mailbox command.
6804  */
6805 void
6806 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6807 {
6808         struct lpfc_vport *vport = mboxq->vport;
6809         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6810
6811         if (mboxq->u.mb.mbxStatus) {
6812                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6813                                 "2555 UNREG_VFI mbxStatus error x%x "
6814                                 "HBA state x%x\n",
6815                                 mboxq->u.mb.mbxStatus, vport->port_state);
6816         }
6817         spin_lock_irq(shost->host_lock);
6818         phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
6819         spin_unlock_irq(shost->host_lock);
6820         mempool_free(mboxq, phba->mbox_mem_pool);
6821         return;
6822 }
6823
6824 /**
6825  * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
6826  * @phba: Pointer to hba context object.
6827  * @mboxq: Pointer to mailbox object.
6828  *
6829  * This function frees memory associated with the mailbox command.
6830  */
6831 static void
6832 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6833 {
6834         struct lpfc_vport *vport = mboxq->vport;
6835
6836         if (mboxq->u.mb.mbxStatus) {
6837                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6838                                 "2550 UNREG_FCFI mbxStatus error x%x "
6839                                 "HBA state x%x\n",
6840                                 mboxq->u.mb.mbxStatus, vport->port_state);
6841         }
6842         mempool_free(mboxq, phba->mbox_mem_pool);
6843         return;
6844 }
6845
6846 /**
6847  * lpfc_unregister_fcf_prep - Unregister fcf record preparation
6848  * @phba: Pointer to hba context object.
6849  *
6850  * This function prepare the HBA for unregistering the currently registered
6851  * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
6852  * VFIs.
6853  */
6854 int
6855 lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
6856 {
6857         struct lpfc_vport **vports;
6858         struct lpfc_nodelist *ndlp;
6859         struct Scsi_Host *shost;
6860         int i = 0, rc;
6861
6862         /* Unregister RPIs */
6863         if (lpfc_fcf_inuse(phba))
6864                 lpfc_unreg_hba_rpis(phba);
6865
6866         /* At this point, all discovery is aborted */
6867         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
6868
6869         /* Unregister VPIs */
6870         vports = lpfc_create_vport_work_array(phba);
6871         if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
6872                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6873                         /* Stop FLOGI/FDISC retries */
6874                         ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
6875                         if (ndlp)
6876                                 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
6877                         lpfc_cleanup_pending_mbox(vports[i]);
6878                         if (phba->sli_rev == LPFC_SLI_REV4)
6879                                 lpfc_sli4_unreg_all_rpis(vports[i]);
6880                         lpfc_mbx_unreg_vpi(vports[i]);
6881                         shost = lpfc_shost_from_vport(vports[i]);
6882                         spin_lock_irq(shost->host_lock);
6883                         vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6884                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
6885                         spin_unlock_irq(shost->host_lock);
6886                 }
6887         lpfc_destroy_vport_work_array(phba, vports);
6888         if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) {
6889                 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
6890                 if (ndlp)
6891                         lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
6892                 lpfc_cleanup_pending_mbox(phba->pport);
6893                 if (phba->sli_rev == LPFC_SLI_REV4)
6894                         lpfc_sli4_unreg_all_rpis(phba->pport);
6895                 lpfc_mbx_unreg_vpi(phba->pport);
6896                 shost = lpfc_shost_from_vport(phba->pport);
6897                 spin_lock_irq(shost->host_lock);
6898                 phba->pport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6899                 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED;
6900                 spin_unlock_irq(shost->host_lock);
6901         }
6902
6903         /* Cleanup any outstanding ELS commands */
6904         lpfc_els_flush_all_cmd(phba);
6905
6906         /* Unregister the physical port VFI */
6907         rc = lpfc_issue_unreg_vfi(phba->pport);
6908         return rc;
6909 }
6910
6911 /**
6912  * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
6913  * @phba: Pointer to hba context object.
6914  *
6915  * This function issues synchronous unregister FCF mailbox command to HBA to
6916  * unregister the currently registered FCF record. The driver does not reset
6917  * the driver FCF usage state flags.
6918  *
6919  * Return 0 if successfully issued, none-zero otherwise.
6920  */
6921 int
6922 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
6923 {
6924         LPFC_MBOXQ_t *mbox;
6925         int rc;
6926
6927         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6928         if (!mbox) {
6929                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6930                                 "2551 UNREG_FCFI mbox allocation failed"
6931                                 "HBA state x%x\n", phba->pport->port_state);
6932                 return -ENOMEM;
6933         }
6934         lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
6935         mbox->vport = phba->pport;
6936         mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
6937         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
6938
6939         if (rc == MBX_NOT_FINISHED) {
6940                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6941                                 "2552 Unregister FCFI command failed rc x%x "
6942                                 "HBA state x%x\n",
6943                                 rc, phba->pport->port_state);
6944                 return -EINVAL;
6945         }
6946         return 0;
6947 }
6948
6949 /**
6950  * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
6951  * @phba: Pointer to hba context object.
6952  *
6953  * This function unregisters the currently reigstered FCF. This function
6954  * also tries to find another FCF for discovery by rescan the HBA FCF table.
6955  */
6956 void
6957 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
6958 {
6959         int rc;
6960
6961         /* Preparation for unregistering fcf */
6962         rc = lpfc_unregister_fcf_prep(phba);
6963         if (rc) {
6964                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6965                                 "2748 Failed to prepare for unregistering "
6966                                 "HBA's FCF record: rc=%d\n", rc);
6967                 return;
6968         }
6969
6970         /* Now, unregister FCF record and reset HBA FCF state */
6971         rc = lpfc_sli4_unregister_fcf(phba);
6972         if (rc)
6973                 return;
6974         /* Reset HBA FCF states after successful unregister FCF */
6975         spin_lock_irq(&phba->hbalock);
6976         phba->fcf.fcf_flag = 0;
6977         spin_unlock_irq(&phba->hbalock);
6978         phba->fcf.current_rec.flag = 0;
6979
6980         /*
6981          * If driver is not unloading, check if there is any other
6982          * FCF record that can be used for discovery.
6983          */
6984         if ((phba->pport->load_flag & FC_UNLOADING) ||
6985             (phba->link_state < LPFC_LINK_UP))
6986                 return;
6987
6988         /* This is considered as the initial FCF discovery scan */
6989         spin_lock_irq(&phba->hbalock);
6990         phba->fcf.fcf_flag |= FCF_INIT_DISC;
6991         spin_unlock_irq(&phba->hbalock);
6992
6993         /* Reset FCF roundrobin bmask for new discovery */
6994         lpfc_sli4_clear_fcf_rr_bmask(phba);
6995
6996         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
6997
6998         if (rc) {
6999                 spin_lock_irq(&phba->hbalock);
7000                 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
7001                 spin_unlock_irq(&phba->hbalock);
7002                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7003                                 "2553 lpfc_unregister_unused_fcf failed "
7004                                 "to read FCF record HBA state x%x\n",
7005                                 phba->pport->port_state);
7006         }
7007 }
7008
7009 /**
7010  * lpfc_unregister_fcf - Unregister the currently registered fcf record
7011  * @phba: Pointer to hba context object.
7012  *
7013  * This function just unregisters the currently reigstered FCF. It does not
7014  * try to find another FCF for discovery.
7015  */
7016 void
7017 lpfc_unregister_fcf(struct lpfc_hba *phba)
7018 {
7019         int rc;
7020
7021         /* Preparation for unregistering fcf */
7022         rc = lpfc_unregister_fcf_prep(phba);
7023         if (rc) {
7024                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7025                                 "2749 Failed to prepare for unregistering "
7026                                 "HBA's FCF record: rc=%d\n", rc);
7027                 return;
7028         }
7029
7030         /* Now, unregister FCF record and reset HBA FCF state */
7031         rc = lpfc_sli4_unregister_fcf(phba);
7032         if (rc)
7033                 return;
7034         /* Set proper HBA FCF states after successful unregister FCF */
7035         spin_lock_irq(&phba->hbalock);
7036         phba->fcf.fcf_flag &= ~FCF_REGISTERED;
7037         spin_unlock_irq(&phba->hbalock);
7038 }
7039
7040 /**
7041  * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
7042  * @phba: Pointer to hba context object.
7043  *
7044  * This function check if there are any connected remote port for the FCF and
7045  * if all the devices are disconnected, this function unregister FCFI.
7046  * This function also tries to use another FCF for discovery.
7047  */
7048 void
7049 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
7050 {
7051         /*
7052          * If HBA is not running in FIP mode, if HBA does not support
7053          * FCoE, if FCF discovery is ongoing, or if FCF has not been
7054          * registered, do nothing.
7055          */
7056         spin_lock_irq(&phba->hbalock);
7057         if (!(phba->hba_flag & HBA_FCOE_MODE) ||
7058             !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
7059             !(phba->hba_flag & HBA_FIP_SUPPORT) ||
7060             (phba->fcf.fcf_flag & FCF_DISCOVERY) ||
7061             (phba->pport->port_state == LPFC_FLOGI)) {
7062                 spin_unlock_irq(&phba->hbalock);
7063                 return;
7064         }
7065         spin_unlock_irq(&phba->hbalock);
7066
7067         if (lpfc_fcf_inuse(phba))
7068                 return;
7069
7070         lpfc_unregister_fcf_rescan(phba);
7071 }
7072
7073 /**
7074  * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
7075  * @phba: Pointer to hba context object.
7076  * @buff: Buffer containing the FCF connection table as in the config
7077  *         region.
7078  * This function create driver data structure for the FCF connection
7079  * record table read from config region 23.
7080  */
7081 static void
7082 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
7083         uint8_t *buff)
7084 {
7085         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
7086         struct lpfc_fcf_conn_hdr *conn_hdr;
7087         struct lpfc_fcf_conn_rec *conn_rec;
7088         uint32_t record_count;
7089         int i;
7090
7091         /* Free the current connect table */
7092         list_for_each_entry_safe(conn_entry, next_conn_entry,
7093                 &phba->fcf_conn_rec_list, list) {
7094                 list_del_init(&conn_entry->list);
7095                 kfree(conn_entry);
7096         }
7097
7098         conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
7099         record_count = conn_hdr->length * sizeof(uint32_t)/
7100                 sizeof(struct lpfc_fcf_conn_rec);
7101
7102         conn_rec = (struct lpfc_fcf_conn_rec *)
7103                 (buff + sizeof(struct lpfc_fcf_conn_hdr));
7104
7105         for (i = 0; i < record_count; i++) {
7106                 if (!(conn_rec[i].flags & FCFCNCT_VALID))
7107                         continue;
7108                 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
7109                         GFP_KERNEL);
7110                 if (!conn_entry) {
7111                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7112                                         "2566 Failed to allocate connection"
7113                                         " table entry\n");
7114                         return;
7115                 }
7116
7117                 memcpy(&conn_entry->conn_rec, &conn_rec[i],
7118                         sizeof(struct lpfc_fcf_conn_rec));
7119                 list_add_tail(&conn_entry->list,
7120                         &phba->fcf_conn_rec_list);
7121         }
7122
7123         if (!list_empty(&phba->fcf_conn_rec_list)) {
7124                 i = 0;
7125                 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list,
7126                                     list) {
7127                         conn_rec = &conn_entry->conn_rec;
7128                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7129                                         "3345 FCF connection list rec[%02d]: "
7130                                         "flags:x%04x, vtag:x%04x, "
7131                                         "fabric_name:x%02x:%02x:%02x:%02x:"
7132                                         "%02x:%02x:%02x:%02x, "
7133                                         "switch_name:x%02x:%02x:%02x:%02x:"
7134                                         "%02x:%02x:%02x:%02x\n", i++,
7135                                         conn_rec->flags, conn_rec->vlan_tag,
7136                                         conn_rec->fabric_name[0],
7137                                         conn_rec->fabric_name[1],
7138                                         conn_rec->fabric_name[2],
7139                                         conn_rec->fabric_name[3],
7140                                         conn_rec->fabric_name[4],
7141                                         conn_rec->fabric_name[5],
7142                                         conn_rec->fabric_name[6],
7143                                         conn_rec->fabric_name[7],
7144                                         conn_rec->switch_name[0],
7145                                         conn_rec->switch_name[1],
7146                                         conn_rec->switch_name[2],
7147                                         conn_rec->switch_name[3],
7148                                         conn_rec->switch_name[4],
7149                                         conn_rec->switch_name[5],
7150                                         conn_rec->switch_name[6],
7151                                         conn_rec->switch_name[7]);
7152                 }
7153         }
7154 }
7155
7156 /**
7157  * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
7158  * @phba: Pointer to hba context object.
7159  * @buff: Buffer containing the FCoE parameter data structure.
7160  *
7161  *  This function update driver data structure with config
7162  *  parameters read from config region 23.
7163  */
7164 static void
7165 lpfc_read_fcoe_param(struct lpfc_hba *phba,
7166                         uint8_t *buff)
7167 {
7168         struct lpfc_fip_param_hdr *fcoe_param_hdr;
7169         struct lpfc_fcoe_params *fcoe_param;
7170
7171         fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
7172                 buff;
7173         fcoe_param = (struct lpfc_fcoe_params *)
7174                 (buff + sizeof(struct lpfc_fip_param_hdr));
7175
7176         if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
7177                 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
7178                 return;
7179
7180         if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
7181                 phba->valid_vlan = 1;
7182                 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
7183                         0xFFF;
7184         }
7185
7186         phba->fc_map[0] = fcoe_param->fc_map[0];
7187         phba->fc_map[1] = fcoe_param->fc_map[1];
7188         phba->fc_map[2] = fcoe_param->fc_map[2];
7189         return;
7190 }
7191
7192 /**
7193  * lpfc_get_rec_conf23 - Get a record type in config region data.
7194  * @buff: Buffer containing config region 23 data.
7195  * @size: Size of the data buffer.
7196  * @rec_type: Record type to be searched.
7197  *
7198  * This function searches config region data to find the beginning
7199  * of the record specified by record_type. If record found, this
7200  * function return pointer to the record else return NULL.
7201  */
7202 static uint8_t *
7203 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
7204 {
7205         uint32_t offset = 0, rec_length;
7206
7207         if ((buff[0] == LPFC_REGION23_LAST_REC) ||
7208                 (size < sizeof(uint32_t)))
7209                 return NULL;
7210
7211         rec_length = buff[offset + 1];
7212
7213         /*
7214          * One TLV record has one word header and number of data words
7215          * specified in the rec_length field of the record header.
7216          */
7217         while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
7218                 <= size) {
7219                 if (buff[offset] == rec_type)
7220                         return &buff[offset];
7221
7222                 if (buff[offset] == LPFC_REGION23_LAST_REC)
7223                         return NULL;
7224
7225                 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
7226                 rec_length = buff[offset + 1];
7227         }
7228         return NULL;
7229 }
7230
7231 /**
7232  * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
7233  * @phba: Pointer to lpfc_hba data structure.
7234  * @buff: Buffer containing config region 23 data.
7235  * @size: Size of the data buffer.
7236  *
7237  * This function parses the FCoE config parameters in config region 23 and
7238  * populate driver data structure with the parameters.
7239  */
7240 void
7241 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
7242                 uint8_t *buff,
7243                 uint32_t size)
7244 {
7245         uint32_t offset = 0;
7246         uint8_t *rec_ptr;
7247
7248         /*
7249          * If data size is less than 2 words signature and version cannot be
7250          * verified.
7251          */
7252         if (size < 2*sizeof(uint32_t))
7253                 return;
7254
7255         /* Check the region signature first */
7256         if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
7257                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7258                         "2567 Config region 23 has bad signature\n");
7259                 return;
7260         }
7261
7262         offset += 4;
7263
7264         /* Check the data structure version */
7265         if (buff[offset] != LPFC_REGION23_VERSION) {
7266                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7267                                 "2568 Config region 23 has bad version\n");
7268                 return;
7269         }
7270         offset += 4;
7271
7272         /* Read FCoE param record */
7273         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
7274                         size - offset, FCOE_PARAM_TYPE);
7275         if (rec_ptr)
7276                 lpfc_read_fcoe_param(phba, rec_ptr);
7277
7278         /* Read FCF connection table */
7279         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
7280                 size - offset, FCOE_CONN_TBL_TYPE);
7281         if (rec_ptr)
7282                 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
7283
7284 }
7285
7286 /*
7287  * lpfc_error_lost_link - IO failure from link event or FW reset check.
7288  *
7289  * @vport: Pointer to lpfc_vport data structure.
7290  * @ulp_status: IO completion status.
7291  * @ulp_word4: Reason code for the ulp_status.
7292  *
7293  * This function evaluates the ulp_status and ulp_word4 values
7294  * for specific error values that indicate an internal link fault
7295  * or fw reset event for the completing IO.  Callers require this
7296  * common data to decide next steps on the IO.
7297  *
7298  * Return:
7299  * false - No link or reset error occurred.
7300  * true - A link or reset error occurred.
7301  */
7302 bool
7303 lpfc_error_lost_link(struct lpfc_vport *vport, u32 ulp_status, u32 ulp_word4)
7304 {
7305         /* Mask off the extra port data to get just the reason code. */
7306         u32 rsn_code = IOERR_PARAM_MASK & ulp_word4;
7307
7308         if (ulp_status == IOSTAT_LOCAL_REJECT &&
7309             (rsn_code == IOERR_SLI_ABORTED ||
7310              rsn_code == IOERR_LINK_DOWN ||
7311              rsn_code == IOERR_SLI_DOWN)) {
7312                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI | LOG_ELS,
7313                                  "0408 Report link error true: <x%x:x%x>\n",
7314                                  ulp_status, ulp_word4);
7315                 return true;
7316         }
7317
7318         return false;
7319 }