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) 2017-2021 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_err("**** %s: NULL ndlp on rport x%px SID x%x\n",
 113                        __func__, rport, rport->scsi_target_id);
 114                 return -EINVAL;
 115         }
 116
 117         if (!ndlp->vport) {
 118                 pr_err("**** %s: Null vport on ndlp x%px, DID x%x rport x%px "
 119                        "SID x%x\n", __func__, ndlp, ndlp->nlp_DID, rport,
 120                        rport->scsi_target_id);
 121                 return -EINVAL;
 122         }
 123         return 0;
 124 }
 125
 126 void
 127 lpfc_terminate_rport_io(struct fc_rport *rport)
 128 {
 129         struct lpfc_rport_data *rdata;
 130         struct lpfc_nodelist *ndlp;
 131         struct lpfc_vport *vport;
 132
 133         if (lpfc_rport_invalid(rport))
 134                 return;
 135
 136         rdata = rport->dd_data;
 137         ndlp = rdata->pnode;
 138         vport = ndlp->vport;
 139         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 140                               "rport terminate: sid:x%x did:x%x flg:x%x",
 141                               ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 142
 143         if (ndlp->nlp_sid != NLP_NO_SID)
 144                 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 145 }
 146
 147 /*
 148  * This function will be called when dev_loss_tmo fire.
 149  */
 150 void
 151 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
 152 {
 153         struct lpfc_nodelist *ndlp;
 154         struct lpfc_vport *vport;
 155         struct lpfc_hba   *phba;
 156         struct lpfc_work_evt *evtp;
 157         unsigned long iflags;
 158
 159         ndlp = ((struct lpfc_rport_data *)rport->dd_data)->pnode;
 160         if (!ndlp)
 161                 return;
 162
 163         vport = ndlp->vport;
 164         phba  = vport->phba;
 165
 166         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 167                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
 168                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 169
 170         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 171                          "3181 dev_loss_callbk x%06x, rport x%px flg x%x "
 172                          "load_flag x%x refcnt %d\n",
 173                          ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag,
 174                          vport->load_flag, kref_read(&ndlp->kref));
 175
 176         /* Don't schedule a worker thread event if the vport is going down.
 177          * The teardown process cleans up the node via lpfc_drop_node.
 178          */
 179         if (vport->load_flag & FC_UNLOADING) {
 180                 ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL;
 181                 ndlp->rport = NULL;
 182
 183                 ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD;
 184
 185                 /* Remove the node reference from remote_port_add now.
 186                  * The driver will not call remote_port_delete.
 187                  */
 188                 lpfc_nlp_put(ndlp);
 189                 return;
 190         }
 191
 192         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 193                 return;
 194
 195         if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn))
 196                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 197                                  "6789 rport name %llx != node port name %llx",
 198                                  rport->port_name,
 199                                  wwn_to_u64(ndlp->nlp_portname.u.wwn));
 200
 201         evtp = &ndlp->dev_loss_evt;
 202
 203         if (!list_empty(&evtp->evt_listp)) {
 204                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 205                                  "6790 rport name %llx dev_loss_evt pending\n",
 206                                  rport->port_name);
 207                 return;
 208         }
 209
 210         spin_lock_irqsave(&ndlp->lock, iflags);
 211         ndlp->nlp_flag |= NLP_IN_DEV_LOSS;
 212
 213         /* If there is a PLOGI in progress, and we are in a
 214          * NLP_NPR_2B_DISC state, don't turn off the flag.
 215          */
 216         if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE)
 217                 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 218
 219         /*
 220          * The backend does not expect any more calls associated with this
 221          * rport. Remove the association between rport and ndlp.
 222          */
 223         ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD;
 224         ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL;
 225         ndlp->rport = NULL;
 226         spin_unlock_irqrestore(&ndlp->lock, iflags);
 227
 228         /* We need to hold the node by incrementing the reference
 229          * count until this queued work is done
 230          */
 231         evtp->evt_arg1 = lpfc_nlp_get(ndlp);
 232
 233         spin_lock_irqsave(&phba->hbalock, iflags);
 234         if (evtp->evt_arg1) {
 235                 evtp->evt = LPFC_EVT_DEV_LOSS;
 236                 list_add_tail(&evtp->evt_listp, &phba->work_list);
 237                 lpfc_worker_wake_up(phba);
 238         }
 239         spin_unlock_irqrestore(&phba->hbalock, iflags);
 240
 241         return;
 242 }
 243
 244 /**
 245  * lpfc_check_inactive_vmid_one - VMID inactivity checker for a vport
 246  * @vport: Pointer to vport context object.
 247  *
 248  * This function checks for idle VMID entries related to a particular vport. If
 249  * found unused/idle, free them accordingly.
 250  **/
 251 static void lpfc_check_inactive_vmid_one(struct lpfc_vport *vport)
 252 {
 253         u16 keep;
 254         u32 difftime = 0, r, bucket;
 255         u64 *lta;
 256         int cpu;
 257         struct lpfc_vmid *vmp;
 258
 259         write_lock(&vport->vmid_lock);
 260
 261         if (!vport->cur_vmid_cnt)
 262                 goto out;
 263
 264         /* iterate through the table */
 265         hash_for_each(vport->hash_table, bucket, vmp, hnode) {
 266                 keep = 0;
 267                 if (vmp->flag & LPFC_VMID_REGISTERED) {
 268                         /* check if the particular VMID is in use */
 269                         /* for all available per cpu variable */
 270                         for_each_possible_cpu(cpu) {
 271                                 /* if last access time is less than timeout */
 272                                 lta = per_cpu_ptr(vmp->last_io_time, cpu);
 273                                 if (!lta)
 274                                         continue;
 275                                 difftime = (jiffies) - (*lta);
 276                                 if ((vport->vmid_inactivity_timeout *
 277                                      JIFFIES_PER_HR) > difftime) {
 278                                         keep = 1;
 279                                         break;
 280                                 }
 281                         }
 282
 283                         /* if none of the cpus have been used by the vm, */
 284                         /*  remove the entry if already registered */
 285                         if (!keep) {
 286                                 /* mark the entry for deregistration */
 287                                 vmp->flag = LPFC_VMID_DE_REGISTER;
 288                                 write_unlock(&vport->vmid_lock);
 289                                 if (vport->vmid_priority_tagging)
 290                                         r = lpfc_vmid_uvem(vport, vmp, false);
 291                                 else
 292                                         r = lpfc_vmid_cmd(vport,
 293                                                           SLI_CTAS_DAPP_IDENT,
 294                                                           vmp);
 295
 296                                 /* decrement number of active vms and mark */
 297                                 /* entry in slot as free */
 298                                 write_lock(&vport->vmid_lock);
 299                                 if (!r) {
 300                                         struct lpfc_vmid *ht = vmp;
 301
 302                                         vport->cur_vmid_cnt--;
 303                                         ht->flag = LPFC_VMID_SLOT_FREE;
 304                                         free_percpu(ht->last_io_time);
 305                                         ht->last_io_time = NULL;
 306                                         hash_del(&ht->hnode);
 307                                 }
 308                         }
 309                 }
 310         }
 311  out:
 312         write_unlock(&vport->vmid_lock);
 313 }
 314
 315 /**
 316  * lpfc_check_inactive_vmid - VMID inactivity checker
 317  * @phba: Pointer to hba context object.
 318  *
 319  * This function is called from the worker thread to determine if an entry in
 320  * the VMID table can be released since there was no I/O activity seen from that
 321  * particular VM for the specified time. When this happens, the entry in the
 322  * table is released and also the resources on the switch cleared.
 323  **/
 324
 325 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba)
 326 {
 327         struct lpfc_vport *vport;
 328         struct lpfc_vport **vports;
 329         int i;
 330
 331         vports = lpfc_create_vport_work_array(phba);
 332         if (!vports)
 333                 return;
 334
 335         for (i = 0; i <= phba->max_vports; i++) {
 336                 if ((!vports[i]) && (i == 0))
 337                         vport = phba->pport;
 338                 else
 339                         vport = vports[i];
 340                 if (!vport)
 341                         break;
 342
 343                 lpfc_check_inactive_vmid_one(vport);
 344         }
 345         lpfc_destroy_vport_work_array(phba, vports);
 346 }
 347
 348 /**
 349  * lpfc_check_nlp_post_devloss - Check to restore ndlp refcnt after devloss
 350  * @vport: Pointer to vport object.
 351  * @ndlp: Pointer to remote node object.
 352  *
 353  * If NLP_IN_RECOV_POST_DEV_LOSS flag was set due to outstanding recovery of
 354  * node during dev_loss_tmo processing, then this function restores the nlp_put
 355  * kref decrement from lpfc_dev_loss_tmo_handler.
 356  **/
 357 void
 358 lpfc_check_nlp_post_devloss(struct lpfc_vport *vport,
 359                             struct lpfc_nodelist *ndlp)
 360 {
 361         unsigned long iflags;
 362
 363         spin_lock_irqsave(&ndlp->lock, iflags);
 364         if (ndlp->save_flags & NLP_IN_RECOV_POST_DEV_LOSS) {
 365                 ndlp->save_flags &= ~NLP_IN_RECOV_POST_DEV_LOSS;
 366                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 367                 lpfc_nlp_get(ndlp);
 368                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY | LOG_NODE,
 369                                  "8438 Devloss timeout reversed on DID x%x "
 370                                  "refcnt %d ndlp %p flag x%x "
 371                                  "port_state = x%x\n",
 372                                  ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp,
 373                                  ndlp->nlp_flag, vport->port_state);
 374                 spin_lock_irqsave(&ndlp->lock, iflags);
 375         }
 376         spin_unlock_irqrestore(&ndlp->lock, iflags);
 377 }
 378
 379 /**
 380  * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler
 381  * @ndlp: Pointer to remote node object.
 382  *
 383  * This function is called from the worker thread when devloss timeout timer
 384  * expires. For SLI4 host, this routine shall return 1 when at lease one
 385  * remote node, including this @ndlp, is still in use of FCF; otherwise, this
 386  * routine shall return 0 when there is no remote node is still in use of FCF
 387  * when devloss timeout happened to this @ndlp.
 388  **/
 389 static int
 390 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 391 {
 392         struct lpfc_vport *vport;
 393         struct lpfc_hba   *phba;
 394         uint8_t *name;
 395         int warn_on = 0;
 396         int fcf_inuse = 0;
 397         bool recovering = false;
 398         struct fc_vport *fc_vport = NULL;
 399         unsigned long iflags;
 400
 401         vport = ndlp->vport;
 402         name = (uint8_t *)&ndlp->nlp_portname;
 403         phba = vport->phba;
 404
 405         spin_lock_irqsave(&ndlp->lock, iflags);
 406         ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
 407         spin_unlock_irqrestore(&ndlp->lock, iflags);
 408
 409         if (phba->sli_rev == LPFC_SLI_REV4)
 410                 fcf_inuse = lpfc_fcf_inuse(phba);
 411
 412         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 413                               "rport devlosstmo:did:x%x type:x%x id:x%x",
 414                               ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_sid);
 415
 416         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 417                          "3182 %s x%06x, nflag x%x xflags x%x refcnt %d\n",
 418                          __func__, ndlp->nlp_DID, ndlp->nlp_flag,
 419                          ndlp->fc4_xpt_flags, kref_read(&ndlp->kref));
 420
 421         /* If the driver is recovering the rport, ignore devloss. */
 422         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
 423                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 424                                  "0284 Devloss timeout Ignored on "
 425                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 426                                  "NPort x%x\n",
 427                                  *name, *(name+1), *(name+2), *(name+3),
 428                                  *(name+4), *(name+5), *(name+6), *(name+7),
 429                                  ndlp->nlp_DID);
 430                 return fcf_inuse;
 431         }
 432
 433         /* Fabric nodes are done. */
 434         if (ndlp->nlp_type & NLP_FABRIC) {
 435                 spin_lock_irqsave(&ndlp->lock, iflags);
 436                 /* In massive vport configuration settings, it's possible
 437                  * dev_loss_tmo fired during node recovery.  So, check if
 438                  * fabric nodes are in discovery states outstanding.
 439                  */
 440                 switch (ndlp->nlp_DID) {
 441                 case Fabric_DID:
 442                         fc_vport = vport->fc_vport;
 443                         if (fc_vport &&
 444                             fc_vport->vport_state == FC_VPORT_INITIALIZING)
 445                                 recovering = true;
 446                         break;
 447                 case Fabric_Cntl_DID:
 448                         if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
 449                                 recovering = true;
 450                         break;
 451                 case FDMI_DID:
 452                         fallthrough;
 453                 case NameServer_DID:
 454                         if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
 455                             ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE)
 456                                 recovering = true;
 457                         break;
 458                 }
 459                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 460
 461                 /* Mark an NLP_IN_RECOV_POST_DEV_LOSS flag to know if reversing
 462                  * the following lpfc_nlp_put is necessary after fabric node is
 463                  * recovered.
 464                  */
 465                 if (recovering) {
 466                         lpfc_printf_vlog(vport, KERN_INFO,
 467                                          LOG_DISCOVERY | LOG_NODE,
 468                                          "8436 Devloss timeout marked on "
 469                                          "DID x%x refcnt %d ndlp %p "
 470                                          "flag x%x port_state = x%x\n",
 471                                          ndlp->nlp_DID, kref_read(&ndlp->kref),
 472                                          ndlp, ndlp->nlp_flag,
 473                                          vport->port_state);
 474                         spin_lock_irqsave(&ndlp->lock, iflags);
 475                         ndlp->save_flags |= NLP_IN_RECOV_POST_DEV_LOSS;
 476                         spin_unlock_irqrestore(&ndlp->lock, iflags);
 477                 } else if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
 478                         /* Fabric node fully recovered before this dev_loss_tmo
 479                          * queue work is processed.  Thus, ignore the
 480                          * dev_loss_tmo event.
 481                          */
 482                         lpfc_printf_vlog(vport, KERN_INFO,
 483                                          LOG_DISCOVERY | LOG_NODE,
 484                                          "8437 Devloss timeout ignored on "
 485                                          "DID x%x refcnt %d ndlp %p "
 486                                          "flag x%x port_state = x%x\n",
 487                                          ndlp->nlp_DID, kref_read(&ndlp->kref),
 488                                          ndlp, ndlp->nlp_flag,
 489                                          vport->port_state);
 490                         return fcf_inuse;
 491                 }
 492
 493                 lpfc_nlp_put(ndlp);
 494                 return fcf_inuse;
 495         }
 496
 497         if (ndlp->nlp_sid != NLP_NO_SID) {
 498                 warn_on = 1;
 499                 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 500         }
 501
 502         if (warn_on) {
 503                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 504                                  "0203 Devloss timeout on "
 505                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 506                                  "NPort x%06x Data: x%x x%x x%x\n",
 507                                  *name, *(name+1), *(name+2), *(name+3),
 508                                  *(name+4), *(name+5), *(name+6), *(name+7),
 509                                  ndlp->nlp_DID, ndlp->nlp_flag,
 510                                  ndlp->nlp_state, ndlp->nlp_rpi);
 511         } else {
 512                 lpfc_printf_vlog(vport, KERN_INFO, LOG_TRACE_EVENT,
 513                                  "0204 Devloss timeout on "
 514                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 515                                  "NPort x%06x Data: x%x x%x x%x\n",
 516                                  *name, *(name+1), *(name+2), *(name+3),
 517                                  *(name+4), *(name+5), *(name+6), *(name+7),
 518                                  ndlp->nlp_DID, ndlp->nlp_flag,
 519                                  ndlp->nlp_state, ndlp->nlp_rpi);
 520         }
 521
 522         /* If we are devloss, but we are in the process of rediscovering the
 523          * ndlp, don't issue a NLP_EVT_DEVICE_RM event.
 524          */
 525         if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
 526             ndlp->nlp_state <= NLP_STE_PRLI_ISSUE) {
 527                 return fcf_inuse;
 528         }
 529
 530         if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD))
 531                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 532
 533         return fcf_inuse;
 534 }
 535
 536 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba)
 537 {
 538         struct lpfc_vport *vport;
 539         struct lpfc_vport **vports;
 540         int i;
 541
 542         vports = lpfc_create_vport_work_array(phba);
 543         if (!vports)
 544                 return;
 545
 546         for (i = 0; i <= phba->max_vports; i++) {
 547                 if ((!vports[i]) && (i == 0))
 548                         vport = phba->pport;
 549                 else
 550                         vport = vports[i];
 551                 if (!vport)
 552                         break;
 553
 554                 if (vport->vmid_flag & LPFC_VMID_ISSUE_QFPA) {
 555                         if (!lpfc_issue_els_qfpa(vport))
 556                                 vport->vmid_flag &= ~LPFC_VMID_ISSUE_QFPA;
 557                 }
 558         }
 559         lpfc_destroy_vport_work_array(phba, vports);
 560 }
 561
 562 /**
 563  * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler
 564  * @phba: Pointer to hba context object.
 565  * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler.
 566  * @nlp_did: remote node identifer with devloss timeout.
 567  *
 568  * This function is called from the worker thread after invoking devloss
 569  * timeout handler and releasing the reference count for the ndlp with
 570  * which the devloss timeout was handled for SLI4 host. For the devloss
 571  * timeout of the last remote node which had been in use of FCF, when this
 572  * routine is invoked, it shall be guaranteed that none of the remote are
 573  * in-use of FCF. When devloss timeout to the last remote using the FCF,
 574  * if the FIP engine is neither in FCF table scan process nor roundrobin
 575  * failover process, the in-use FCF shall be unregistered. If the FIP
 576  * engine is in FCF discovery process, the devloss timeout state shall
 577  * be set for either the FCF table scan process or roundrobin failover
 578  * process to unregister the in-use FCF.
 579  **/
 580 static void
 581 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse,
 582                                     uint32_t nlp_did)
 583 {
 584         /* If devloss timeout happened to a remote node when FCF had no
 585          * longer been in-use, do nothing.
 586          */
 587         if (!fcf_inuse)
 588                 return;
 589
 590         if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) {
 591                 spin_lock_irq(&phba->hbalock);
 592                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
 593                         if (phba->hba_flag & HBA_DEVLOSS_TMO) {
 594                                 spin_unlock_irq(&phba->hbalock);
 595                                 return;
 596                         }
 597                         phba->hba_flag |= HBA_DEVLOSS_TMO;
 598                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 599                                         "2847 Last remote node (x%x) using "
 600                                         "FCF devloss tmo\n", nlp_did);
 601                 }
 602                 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) {
 603                         spin_unlock_irq(&phba->hbalock);
 604                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 605                                         "2868 Devloss tmo to FCF rediscovery "
 606                                         "in progress\n");
 607                         return;
 608                 }
 609                 if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) {
 610                         spin_unlock_irq(&phba->hbalock);
 611                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 612                                         "2869 Devloss tmo to idle FIP engine, "
 613                                         "unreg in-use FCF and rescan.\n");
 614                         /* Unregister in-use FCF and rescan */
 615                         lpfc_unregister_fcf_rescan(phba);
 616                         return;
 617                 }
 618                 spin_unlock_irq(&phba->hbalock);
 619                 if (phba->hba_flag & FCF_TS_INPROG)
 620                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 621                                         "2870 FCF table scan in progress\n");
 622                 if (phba->hba_flag & FCF_RR_INPROG)
 623                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 624                                         "2871 FLOGI roundrobin FCF failover "
 625                                         "in progress\n");
 626         }
 627         lpfc_unregister_unused_fcf(phba);
 628 }
 629
 630 /**
 631  * lpfc_alloc_fast_evt - Allocates data structure for posting event
 632  * @phba: Pointer to hba context object.
 633  *
 634  * This function is called from the functions which need to post
 635  * events from interrupt context. This function allocates data
 636  * structure required for posting event. It also keeps track of
 637  * number of events pending and prevent event storm when there are
 638  * too many events.
 639  **/
 640 struct lpfc_fast_path_event *
 641 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
 642         struct lpfc_fast_path_event *ret;
 643
 644         /* If there are lot of fast event do not exhaust memory due to this */
 645         if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
 646                 return NULL;
 647
 648         ret = kzalloc(sizeof(struct lpfc_fast_path_event),
 649                         GFP_ATOMIC);
 650         if (ret) {
 651                 atomic_inc(&phba->fast_event_count);
 652                 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
 653                 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
 654         }
 655         return ret;
 656 }
 657
 658 /**
 659  * lpfc_free_fast_evt - Frees event data structure
 660  * @phba: Pointer to hba context object.
 661  * @evt:  Event object which need to be freed.
 662  *
 663  * This function frees the data structure required for posting
 664  * events.
 665  **/
 666 void
 667 lpfc_free_fast_evt(struct lpfc_hba *phba,
 668                 struct lpfc_fast_path_event *evt) {
 669
 670         atomic_dec(&phba->fast_event_count);
 671         kfree(evt);
 672 }
 673
 674 /**
 675  * lpfc_send_fastpath_evt - Posts events generated from fast path
 676  * @phba: Pointer to hba context object.
 677  * @evtp: Event data structure.
 678  *
 679  * This function is called from worker thread, when the interrupt
 680  * context need to post an event. This function posts the event
 681  * to fc transport netlink interface.
 682  **/
 683 static void
 684 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
 685                 struct lpfc_work_evt *evtp)
 686 {
 687         unsigned long evt_category, evt_sub_category;
 688         struct lpfc_fast_path_event *fast_evt_data;
 689         char *evt_data;
 690         uint32_t evt_data_size;
 691         struct Scsi_Host *shost;
 692
 693         fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
 694                 work_evt);
 695
 696         evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
 697         evt_sub_category = (unsigned long) fast_evt_data->un.
 698                         fabric_evt.subcategory;
 699         shost = lpfc_shost_from_vport(fast_evt_data->vport);
 700         if (evt_category == FC_REG_FABRIC_EVENT) {
 701                 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
 702                         evt_data = (char *) &fast_evt_data->un.read_check_error;
 703                         evt_data_size = sizeof(fast_evt_data->un.
 704                                 read_check_error);
 705                 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
 706                         (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
 707                         evt_data = (char *) &fast_evt_data->un.fabric_evt;
 708                         evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
 709                 } else {
 710                         lpfc_free_fast_evt(phba, fast_evt_data);
 711                         return;
 712                 }
 713         } else if (evt_category == FC_REG_SCSI_EVENT) {
 714                 switch (evt_sub_category) {
 715                 case LPFC_EVENT_QFULL:
 716                 case LPFC_EVENT_DEVBSY:
 717                         evt_data = (char *) &fast_evt_data->un.scsi_evt;
 718                         evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
 719                         break;
 720                 case LPFC_EVENT_CHECK_COND:
 721                         evt_data = (char *) &fast_evt_data->un.check_cond_evt;
 722                         evt_data_size =  sizeof(fast_evt_data->un.
 723                                 check_cond_evt);
 724                         break;
 725                 case LPFC_EVENT_VARQUEDEPTH:
 726                         evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
 727                         evt_data_size = sizeof(fast_evt_data->un.
 728                                 queue_depth_evt);
 729                         break;
 730                 default:
 731                         lpfc_free_fast_evt(phba, fast_evt_data);
 732                         return;
 733                 }
 734         } else {
 735                 lpfc_free_fast_evt(phba, fast_evt_data);
 736                 return;
 737         }
 738
 739         if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
 740                 fc_host_post_vendor_event(shost,
 741                         fc_get_event_number(),
 742                         evt_data_size,
 743                         evt_data,
 744                         LPFC_NL_VENDOR_ID);
 745
 746         lpfc_free_fast_evt(phba, fast_evt_data);
 747         return;
 748 }
 749
 750 static void
 751 lpfc_work_list_done(struct lpfc_hba *phba)
 752 {
 753         struct lpfc_work_evt  *evtp = NULL;
 754         struct lpfc_nodelist  *ndlp;
 755         int free_evt;
 756         int fcf_inuse;
 757         uint32_t nlp_did;
 758
 759         spin_lock_irq(&phba->hbalock);
 760         while (!list_empty(&phba->work_list)) {
 761                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 762                                  evt_listp);
 763                 spin_unlock_irq(&phba->hbalock);
 764                 free_evt = 1;
 765                 switch (evtp->evt) {
 766                 case LPFC_EVT_ELS_RETRY:
 767                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 768                         lpfc_els_retry_delay_handler(ndlp);
 769                         free_evt = 0; /* evt is part of ndlp */
 770                         /* decrement the node reference count held
 771                          * for this queued work
 772                          */
 773                         lpfc_nlp_put(ndlp);
 774                         break;
 775                 case LPFC_EVT_DEV_LOSS:
 776                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 777                         fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp);
 778                         free_evt = 0;
 779                         /* decrement the node reference count held for
 780                          * this queued work
 781                          */
 782                         nlp_did = ndlp->nlp_DID;
 783                         lpfc_nlp_put(ndlp);
 784                         if (phba->sli_rev == LPFC_SLI_REV4)
 785                                 lpfc_sli4_post_dev_loss_tmo_handler(phba,
 786                                                                     fcf_inuse,
 787                                                                     nlp_did);
 788                         break;
 789                 case LPFC_EVT_RECOVER_PORT:
 790                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 791                         lpfc_sli_abts_recover_port(ndlp->vport, ndlp);
 792                         free_evt = 0;
 793                         /* decrement the node reference count held for
 794                          * this queued work
 795                          */
 796                         lpfc_nlp_put(ndlp);
 797                         break;
 798                 case LPFC_EVT_ONLINE:
 799                         if (phba->link_state < LPFC_LINK_DOWN)
 800                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 801                         else
 802                                 *(int *) (evtp->evt_arg1) = 0;
 803                         complete((struct completion *)(evtp->evt_arg2));
 804                         break;
 805                 case LPFC_EVT_OFFLINE_PREP:
 806                         if (phba->link_state >= LPFC_LINK_DOWN)
 807                                 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
 808                         *(int *)(evtp->evt_arg1) = 0;
 809                         complete((struct completion *)(evtp->evt_arg2));
 810                         break;
 811                 case LPFC_EVT_OFFLINE:
 812                         lpfc_offline(phba);
 813                         lpfc_sli_brdrestart(phba);
 814                         *(int *)(evtp->evt_arg1) =
 815                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 816                         lpfc_unblock_mgmt_io(phba);
 817                         complete((struct completion *)(evtp->evt_arg2));
 818                         break;
 819                 case LPFC_EVT_WARM_START:
 820                         lpfc_offline(phba);
 821                         lpfc_reset_barrier(phba);
 822                         lpfc_sli_brdreset(phba);
 823                         lpfc_hba_down_post(phba);
 824                         *(int *)(evtp->evt_arg1) =
 825                                 lpfc_sli_brdready(phba, HS_MBRDY);
 826                         lpfc_unblock_mgmt_io(phba);
 827                         complete((struct completion *)(evtp->evt_arg2));
 828                         break;
 829                 case LPFC_EVT_KILL:
 830                         lpfc_offline(phba);
 831                         *(int *)(evtp->evt_arg1)
 832                                 = (phba->pport->stopped)
 833                                         ? 0 : lpfc_sli_brdkill(phba);
 834                         lpfc_unblock_mgmt_io(phba);
 835                         complete((struct completion *)(evtp->evt_arg2));
 836                         break;
 837                 case LPFC_EVT_FASTPATH_MGMT_EVT:
 838                         lpfc_send_fastpath_evt(phba, evtp);
 839                         free_evt = 0;
 840                         break;
 841                 case LPFC_EVT_RESET_HBA:
 842                         if (!(phba->pport->load_flag & FC_UNLOADING))
 843                                 lpfc_reset_hba(phba);
 844                         break;
 845                 }
 846                 if (free_evt)
 847                         kfree(evtp);
 848                 spin_lock_irq(&phba->hbalock);
 849         }
 850         spin_unlock_irq(&phba->hbalock);
 851
 852 }
 853
 854 static void
 855 lpfc_work_done(struct lpfc_hba *phba)
 856 {
 857         struct lpfc_sli_ring *pring;
 858         uint32_t ha_copy, status, control, work_port_events;
 859         struct lpfc_vport **vports;
 860         struct lpfc_vport *vport;
 861         int i;
 862
 863         spin_lock_irq(&phba->hbalock);
 864         ha_copy = phba->work_ha;
 865         phba->work_ha = 0;
 866         spin_unlock_irq(&phba->hbalock);
 867
 868         /* First, try to post the next mailbox command to SLI4 device */
 869         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
 870                 lpfc_sli4_post_async_mbox(phba);
 871
 872         if (ha_copy & HA_ERATT) {
 873                 /* Handle the error attention event */
 874                 lpfc_handle_eratt(phba);
 875
 876                 if (phba->fw_dump_cmpl) {
 877                         complete(phba->fw_dump_cmpl);
 878                         phba->fw_dump_cmpl = NULL;
 879                 }
 880         }
 881
 882         if (ha_copy & HA_MBATT)
 883                 lpfc_sli_handle_mb_event(phba);
 884
 885         if (ha_copy & HA_LATT)
 886                 lpfc_handle_latt(phba);
 887
 888         /* Handle VMID Events */
 889         if (lpfc_is_vmid_enabled(phba)) {
 890                 if (phba->pport->work_port_events &
 891                     WORKER_CHECK_VMID_ISSUE_QFPA) {
 892                         lpfc_check_vmid_qfpa_issue(phba);
 893                         phba->pport->work_port_events &=
 894                                 ~WORKER_CHECK_VMID_ISSUE_QFPA;
 895                 }
 896                 if (phba->pport->work_port_events &
 897                     WORKER_CHECK_INACTIVE_VMID) {
 898                         lpfc_check_inactive_vmid(phba);
 899                         phba->pport->work_port_events &=
 900                             ~WORKER_CHECK_INACTIVE_VMID;
 901                 }
 902         }
 903
 904         /* Process SLI4 events */
 905         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
 906                 if (phba->hba_flag & HBA_RRQ_ACTIVE)
 907                         lpfc_handle_rrq_active(phba);
 908                 if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
 909                         lpfc_sli4_els_xri_abort_event_proc(phba);
 910                 if (phba->hba_flag & ASYNC_EVENT)
 911                         lpfc_sli4_async_event_proc(phba);
 912                 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
 913                         spin_lock_irq(&phba->hbalock);
 914                         phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
 915                         spin_unlock_irq(&phba->hbalock);
 916                         lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
 917                 }
 918                 if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
 919                         lpfc_sli4_fcf_redisc_event_proc(phba);
 920         }
 921
 922         vports = lpfc_create_vport_work_array(phba);
 923         if (vports != NULL)
 924                 for (i = 0; i <= phba->max_vports; i++) {
 925                         /*
 926                          * We could have no vports in array if unloading, so if
 927                          * this happens then just use the pport
 928                          */
 929                         if (vports[i] == NULL && i == 0)
 930                                 vport = phba->pport;
 931                         else
 932                                 vport = vports[i];
 933                         if (vport == NULL)
 934                                 break;
 935                         spin_lock_irq(&vport->work_port_lock);
 936                         work_port_events = vport->work_port_events;
 937                         vport->work_port_events &= ~work_port_events;
 938                         spin_unlock_irq(&vport->work_port_lock);
 939                         if (work_port_events & WORKER_DISC_TMO)
 940                                 lpfc_disc_timeout_handler(vport);
 941                         if (work_port_events & WORKER_ELS_TMO)
 942                                 lpfc_els_timeout_handler(vport);
 943                         if (work_port_events & WORKER_HB_TMO)
 944                                 lpfc_hb_timeout_handler(phba);
 945                         if (work_port_events & WORKER_MBOX_TMO)
 946                                 lpfc_mbox_timeout_handler(phba);
 947                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
 948                                 lpfc_unblock_fabric_iocbs(phba);
 949                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
 950                                 lpfc_ramp_down_queue_handler(phba);
 951                         if (work_port_events & WORKER_DELAYED_DISC_TMO)
 952                                 lpfc_delayed_disc_timeout_handler(vport);
 953                 }
 954         lpfc_destroy_vport_work_array(phba, vports);
 955
 956         pring = lpfc_phba_elsring(phba);
 957         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
 958         status >>= (4*LPFC_ELS_RING);
 959         if (pring && (status & HA_RXMASK ||
 960                       pring->flag & LPFC_DEFERRED_RING_EVENT ||
 961                       phba->hba_flag & HBA_SP_QUEUE_EVT)) {
 962                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
 963                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
 964                         /* Preserve legacy behavior. */
 965                         if (!(phba->hba_flag & HBA_SP_QUEUE_EVT))
 966                                 set_bit(LPFC_DATA_READY, &phba->data_flags);
 967                 } else {
 968                         /* Driver could have abort request completed in queue
 969                          * when link goes down.  Allow for this transition.
 970                          */
 971                         if (phba->link_state >= LPFC_LINK_DOWN ||
 972                             phba->link_flag & LS_MDS_LOOPBACK) {
 973                                 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
 974                                 lpfc_sli_handle_slow_ring_event(phba, pring,
 975                                                                 (status &
 976                                                                 HA_RXMASK));
 977                         }
 978                 }
 979                 if (phba->sli_rev == LPFC_SLI_REV4)
 980                         lpfc_drain_txq(phba);
 981                 /*
 982                  * Turn on Ring interrupts
 983                  */
 984                 if (phba->sli_rev <= LPFC_SLI_REV3) {
 985                         spin_lock_irq(&phba->hbalock);
 986                         control = readl(phba->HCregaddr);
 987                         if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
 988                                 lpfc_debugfs_slow_ring_trc(phba,
 989                                         "WRK Enable ring: cntl:x%x hacopy:x%x",
 990                                         control, ha_copy, 0);
 991
 992                                 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
 993                                 writel(control, phba->HCregaddr);
 994                                 readl(phba->HCregaddr); /* flush */
 995                         } else {
 996                                 lpfc_debugfs_slow_ring_trc(phba,
 997                                         "WRK Ring ok:     cntl:x%x hacopy:x%x",
 998                                         control, ha_copy, 0);
 999                         }
1000                         spin_unlock_irq(&phba->hbalock);
1001                 }
1002         }
1003         lpfc_work_list_done(phba);
1004 }
1005
1006 int
1007 lpfc_do_work(void *p)
1008 {
1009         struct lpfc_hba *phba = p;
1010         int rc;
1011
1012         set_user_nice(current, MIN_NICE);
1013         current->flags |= PF_NOFREEZE;
1014         phba->data_flags = 0;
1015
1016         while (!kthread_should_stop()) {
1017                 /* wait and check worker queue activities */
1018                 rc = wait_event_interruptible(phba->work_waitq,
1019                                         (test_and_clear_bit(LPFC_DATA_READY,
1020                                                             &phba->data_flags)
1021                                          || kthread_should_stop()));
1022                 /* Signal wakeup shall terminate the worker thread */
1023                 if (rc) {
1024                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1025                                         "0433 Wakeup on signal: rc=x%x\n", rc);
1026                         break;
1027                 }
1028
1029                 /* Attend pending lpfc data processing */
1030                 lpfc_work_done(phba);
1031         }
1032         phba->worker_thread = NULL;
1033         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1034                         "0432 Worker thread stopped.\n");
1035         return 0;
1036 }
1037
1038 /*
1039  * This is only called to handle FC worker events. Since this a rare
1040  * occurrence, we allocate a struct lpfc_work_evt structure here instead of
1041  * embedding it in the IOCB.
1042  */
1043 int
1044 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
1045                       uint32_t evt)
1046 {
1047         struct lpfc_work_evt  *evtp;
1048         unsigned long flags;
1049
1050         /*
1051          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
1052          * be queued to worker thread for processing
1053          */
1054         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
1055         if (!evtp)
1056                 return 0;
1057
1058         evtp->evt_arg1  = arg1;
1059         evtp->evt_arg2  = arg2;
1060         evtp->evt       = evt;
1061
1062         spin_lock_irqsave(&phba->hbalock, flags);
1063         list_add_tail(&evtp->evt_listp, &phba->work_list);
1064         spin_unlock_irqrestore(&phba->hbalock, flags);
1065
1066         lpfc_worker_wake_up(phba);
1067
1068         return 1;
1069 }
1070
1071 void
1072 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
1073 {
1074         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1075         struct lpfc_hba  *phba = vport->phba;
1076         struct lpfc_nodelist *ndlp, *next_ndlp;
1077
1078         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
1079                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
1080                         /* It's possible the FLOGI to the fabric node never
1081                          * successfully completed and never registered with the
1082                          * transport.  In this case there is no way to clean up
1083                          * the node.
1084                          */
1085                         if (ndlp->nlp_DID == Fabric_DID) {
1086                                 if (ndlp->nlp_prev_state ==
1087                                     NLP_STE_UNUSED_NODE &&
1088                                     !ndlp->fc4_xpt_flags)
1089                                         lpfc_nlp_put(ndlp);
1090                         }
1091                         continue;
1092                 }
1093
1094                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
1095                     ((vport->port_type == LPFC_NPIV_PORT) &&
1096                      ((ndlp->nlp_DID == NameServer_DID) ||
1097                       (ndlp->nlp_DID == FDMI_DID) ||
1098                       (ndlp->nlp_DID == Fabric_Cntl_DID))))
1099                         lpfc_unreg_rpi(vport, ndlp);
1100
1101                 /* Leave Fabric nodes alone on link down */
1102                 if ((phba->sli_rev < LPFC_SLI_REV4) &&
1103                     (!remove && ndlp->nlp_type & NLP_FABRIC))
1104                         continue;
1105
1106                 /* Notify transport of connectivity loss to trigger cleanup. */
1107                 if (phba->nvmet_support &&
1108                     ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
1109                         lpfc_nvmet_invalidate_host(phba, ndlp);
1110
1111                 lpfc_disc_state_machine(vport, ndlp, NULL,
1112                                         remove
1113                                         ? NLP_EVT_DEVICE_RM
1114                                         : NLP_EVT_DEVICE_RECOVERY);
1115         }
1116         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
1117                 if (phba->sli_rev == LPFC_SLI_REV4)
1118                         lpfc_sli4_unreg_all_rpis(vport);
1119                 lpfc_mbx_unreg_vpi(vport);
1120                 spin_lock_irq(shost->host_lock);
1121                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
1122                 spin_unlock_irq(shost->host_lock);
1123         }
1124 }
1125
1126 void
1127 lpfc_port_link_failure(struct lpfc_vport *vport)
1128 {
1129         lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
1130
1131         /* Cleanup any outstanding received buffers */
1132         lpfc_cleanup_rcv_buffers(vport);
1133
1134         /* Cleanup any outstanding RSCN activity */
1135         lpfc_els_flush_rscn(vport);
1136
1137         /* Cleanup any outstanding ELS commands */
1138         lpfc_els_flush_cmd(vport);
1139
1140         lpfc_cleanup_rpis(vport, 0);
1141
1142         /* Turn off discovery timer if its running */
1143         lpfc_can_disctmo(vport);
1144 }
1145
1146 void
1147 lpfc_linkdown_port(struct lpfc_vport *vport)
1148 {
1149         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1150
1151         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1152                 fc_host_post_event(shost, fc_get_event_number(),
1153                                    FCH_EVT_LINKDOWN, 0);
1154
1155         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1156                 "Link Down:       state:x%x rtry:x%x flg:x%x",
1157                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1158
1159         lpfc_port_link_failure(vport);
1160
1161         /* Stop delayed Nport discovery */
1162         spin_lock_irq(shost->host_lock);
1163         vport->fc_flag &= ~FC_DISC_DELAYED;
1164         spin_unlock_irq(shost->host_lock);
1165         del_timer_sync(&vport->delayed_disc_tmo);
1166 }
1167
1168 int
1169 lpfc_linkdown(struct lpfc_hba *phba)
1170 {
1171         struct lpfc_vport *vport = phba->pport;
1172         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1173         struct lpfc_vport **vports;
1174         LPFC_MBOXQ_t          *mb;
1175         int i;
1176
1177         if (phba->link_state == LPFC_LINK_DOWN)
1178                 return 0;
1179
1180         /* Block all SCSI stack I/Os */
1181         lpfc_scsi_dev_block(phba);
1182
1183         phba->defer_flogi_acc_flag = false;
1184
1185         spin_lock_irq(&phba->hbalock);
1186         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
1187         spin_unlock_irq(&phba->hbalock);
1188         if (phba->link_state > LPFC_LINK_DOWN) {
1189                 phba->link_state = LPFC_LINK_DOWN;
1190                 if (phba->sli4_hba.conf_trunk) {
1191                         phba->trunk_link.link0.state = 0;
1192                         phba->trunk_link.link1.state = 0;
1193                         phba->trunk_link.link2.state = 0;
1194                         phba->trunk_link.link3.state = 0;
1195                         phba->sli4_hba.link_state.logical_speed =
1196                                                 LPFC_LINK_SPEED_UNKNOWN;
1197                 }
1198                 spin_lock_irq(shost->host_lock);
1199                 phba->pport->fc_flag &= ~FC_LBIT;
1200                 spin_unlock_irq(shost->host_lock);
1201         }
1202         vports = lpfc_create_vport_work_array(phba);
1203         if (vports != NULL) {
1204                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
1205                         /* Issue a LINK DOWN event to all nodes */
1206                         lpfc_linkdown_port(vports[i]);
1207
1208                         vports[i]->fc_myDID = 0;
1209
1210                         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
1211                             (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1212                                 if (phba->nvmet_support)
1213                                         lpfc_nvmet_update_targetport(phba);
1214                                 else
1215                                         lpfc_nvme_update_localport(vports[i]);
1216                         }
1217                 }
1218         }
1219         lpfc_destroy_vport_work_array(phba, vports);
1220
1221         /* Clean up any SLI3 firmware default rpi's */
1222         if (phba->sli_rev > LPFC_SLI_REV3)
1223                 goto skip_unreg_did;
1224
1225         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1226         if (mb) {
1227                 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb);
1228                 mb->vport = vport;
1229                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1230                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
1231                     == MBX_NOT_FINISHED) {
1232                         mempool_free(mb, phba->mbox_mem_pool);
1233                 }
1234         }
1235
1236  skip_unreg_did:
1237         /* Setup myDID for link up if we are in pt2pt mode */
1238         if (phba->pport->fc_flag & FC_PT2PT) {
1239                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1240                 if (mb) {
1241                         lpfc_config_link(phba, mb);
1242                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1243                         mb->vport = vport;
1244                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
1245                             == MBX_NOT_FINISHED) {
1246                                 mempool_free(mb, phba->mbox_mem_pool);
1247                         }
1248                 }
1249                 spin_lock_irq(shost->host_lock);
1250                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
1251                 phba->pport->rcv_flogi_cnt = 0;
1252                 spin_unlock_irq(shost->host_lock);
1253         }
1254         return 0;
1255 }
1256
1257 static void
1258 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
1259 {
1260         struct lpfc_nodelist *ndlp;
1261
1262         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
1263                 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
1264
1265                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
1266                         continue;
1267                 if (ndlp->nlp_type & NLP_FABRIC) {
1268                         /* On Linkup its safe to clean up the ndlp
1269                          * from Fabric connections.
1270                          */
1271                         if (ndlp->nlp_DID != Fabric_DID)
1272                                 lpfc_unreg_rpi(vport, ndlp);
1273                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1274                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
1275                         /* Fail outstanding IO now since device is
1276                          * marked for PLOGI.
1277                          */
1278                         lpfc_unreg_rpi(vport, ndlp);
1279                 }
1280         }
1281 }
1282
1283 static void
1284 lpfc_linkup_port(struct lpfc_vport *vport)
1285 {
1286         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1287         struct lpfc_hba  *phba = vport->phba;
1288
1289         if ((vport->load_flag & FC_UNLOADING) != 0)
1290                 return;
1291
1292         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1293                 "Link Up:         top:x%x speed:x%x flg:x%x",
1294                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
1295
1296         /* If NPIV is not enabled, only bring the physical port up */
1297         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
1298                 (vport != phba->pport))
1299                 return;
1300
1301         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1302                 fc_host_post_event(shost, fc_get_event_number(),
1303                                    FCH_EVT_LINKUP, 0);
1304
1305         spin_lock_irq(shost->host_lock);
1306         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
1307                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
1308         vport->fc_flag |= FC_NDISC_ACTIVE;
1309         vport->fc_ns_retry = 0;
1310         spin_unlock_irq(shost->host_lock);
1311
1312         lpfc_linkup_cleanup_nodes(vport);
1313 }
1314
1315 static int
1316 lpfc_linkup(struct lpfc_hba *phba)
1317 {
1318         struct lpfc_vport **vports;
1319         int i;
1320         struct Scsi_Host  *shost = lpfc_shost_from_vport(phba->pport);
1321
1322         phba->link_state = LPFC_LINK_UP;
1323
1324         /* Unblock fabric iocbs if they are blocked */
1325         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
1326         del_timer_sync(&phba->fabric_block_timer);
1327
1328         vports = lpfc_create_vport_work_array(phba);
1329         if (vports != NULL)
1330                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
1331                         lpfc_linkup_port(vports[i]);
1332         lpfc_destroy_vport_work_array(phba, vports);
1333
1334         /* Clear the pport flogi counter in case the link down was
1335          * absorbed without an ACQE. No lock here - in worker thread
1336          * and discovery is synchronized.
1337          */
1338         spin_lock_irq(shost->host_lock);
1339         phba->pport->rcv_flogi_cnt = 0;
1340         spin_unlock_irq(shost->host_lock);
1341
1342         /* reinitialize initial FLOGI flag */
1343         phba->hba_flag &= ~(HBA_FLOGI_ISSUED);
1344         phba->defer_flogi_acc_flag = false;
1345
1346         return 0;
1347 }
1348
1349 /*
1350  * This routine handles processing a CLEAR_LA mailbox
1351  * command upon completion. It is setup in the LPFC_MBOXQ
1352  * as the completion routine when the command is
1353  * handed off to the SLI layer. SLI3 only.
1354  */
1355 static void
1356 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1357 {
1358         struct lpfc_vport *vport = pmb->vport;
1359         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1360         struct lpfc_sli   *psli = &phba->sli;
1361         MAILBOX_t *mb = &pmb->u.mb;
1362         uint32_t control;
1363
1364         /* Since we don't do discovery right now, turn these off here */
1365         psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1366         psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1367
1368         /* Check for error */
1369         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
1370                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
1371                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1372                                  "0320 CLEAR_LA mbxStatus error x%x hba "
1373                                  "state x%x\n",
1374                                  mb->mbxStatus, vport->port_state);
1375                 phba->link_state = LPFC_HBA_ERROR;
1376                 goto out;
1377         }
1378
1379         if (vport->port_type == LPFC_PHYSICAL_PORT)
1380                 phba->link_state = LPFC_HBA_READY;
1381
1382         spin_lock_irq(&phba->hbalock);
1383         psli->sli_flag |= LPFC_PROCESS_LA;
1384         control = readl(phba->HCregaddr);
1385         control |= HC_LAINT_ENA;
1386         writel(control, phba->HCregaddr);
1387         readl(phba->HCregaddr); /* flush */
1388         spin_unlock_irq(&phba->hbalock);
1389         mempool_free(pmb, phba->mbox_mem_pool);
1390         return;
1391
1392 out:
1393         /* Device Discovery completes */
1394         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1395                          "0225 Device Discovery completes\n");
1396         mempool_free(pmb, phba->mbox_mem_pool);
1397
1398         spin_lock_irq(shost->host_lock);
1399         vport->fc_flag &= ~FC_ABORT_DISCOVERY;
1400         spin_unlock_irq(shost->host_lock);
1401
1402         lpfc_can_disctmo(vport);
1403
1404         /* turn on Link Attention interrupts */
1405
1406         spin_lock_irq(&phba->hbalock);
1407         psli->sli_flag |= LPFC_PROCESS_LA;
1408         control = readl(phba->HCregaddr);
1409         control |= HC_LAINT_ENA;
1410         writel(control, phba->HCregaddr);
1411         readl(phba->HCregaddr); /* flush */
1412         spin_unlock_irq(&phba->hbalock);
1413
1414         return;
1415 }
1416
1417 void
1418 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1419 {
1420         struct lpfc_vport *vport = pmb->vport;
1421         LPFC_MBOXQ_t *sparam_mb;
1422         struct lpfc_dmabuf *sparam_mp;
1423         u16 status = pmb->u.mb.mbxStatus;
1424         int rc;
1425
1426         mempool_free(pmb, phba->mbox_mem_pool);
1427
1428         if (status)
1429                 goto out;
1430
1431         /* don't perform discovery for SLI4 loopback diagnostic test */
1432         if ((phba->sli_rev == LPFC_SLI_REV4) &&
1433             !(phba->hba_flag & HBA_FCOE_MODE) &&
1434             (phba->link_flag & LS_LOOPBACK_MODE))
1435                 return;
1436
1437         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
1438             vport->fc_flag & FC_PUBLIC_LOOP &&
1439             !(vport->fc_flag & FC_LBIT)) {
1440                         /* Need to wait for FAN - use discovery timer
1441                          * for timeout.  port_state is identically
1442                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
1443                          */
1444                         lpfc_set_disctmo(vport);
1445                         return;
1446         }
1447
1448         /* Start discovery by sending a FLOGI. port_state is identically
1449          * LPFC_FLOGI while waiting for FLOGI cmpl.
1450          */
1451         if (vport->port_state != LPFC_FLOGI) {
1452                 /* Issue MBX_READ_SPARAM to update CSPs before FLOGI if
1453                  * bb-credit recovery is in place.
1454                  */
1455                 if (phba->bbcredit_support && phba->cfg_enable_bbcr &&
1456                     !(phba->link_flag & LS_LOOPBACK_MODE)) {
1457                         sparam_mb = mempool_alloc(phba->mbox_mem_pool,
1458                                                   GFP_KERNEL);
1459                         if (!sparam_mb)
1460                                 goto sparam_out;
1461
1462                         rc = lpfc_read_sparam(phba, sparam_mb, 0);
1463                         if (rc) {
1464                                 mempool_free(sparam_mb, phba->mbox_mem_pool);
1465                                 goto sparam_out;
1466                         }
1467                         sparam_mb->vport = vport;
1468                         sparam_mb->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1469                         rc = lpfc_sli_issue_mbox(phba, sparam_mb, MBX_NOWAIT);
1470                         if (rc == MBX_NOT_FINISHED) {
1471                                 sparam_mp = (struct lpfc_dmabuf *)
1472                                                 sparam_mb->ctx_buf;
1473                                 lpfc_mbuf_free(phba, sparam_mp->virt,
1474                                                sparam_mp->phys);
1475                                 kfree(sparam_mp);
1476                                 sparam_mb->ctx_buf = NULL;
1477                                 mempool_free(sparam_mb, phba->mbox_mem_pool);
1478                                 goto sparam_out;
1479                         }
1480
1481                         phba->hba_flag |= HBA_DEFER_FLOGI;
1482                 }  else {
1483                         lpfc_initial_flogi(vport);
1484                 }
1485         } else {
1486                 if (vport->fc_flag & FC_PT2PT)
1487                         lpfc_disc_start(vport);
1488         }
1489         return;
1490
1491 out:
1492         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1493                          "0306 CONFIG_LINK mbxStatus error x%x HBA state x%x\n",
1494                          status, vport->port_state);
1495
1496 sparam_out:
1497         lpfc_linkdown(phba);
1498
1499         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1500                          "0200 CONFIG_LINK bad hba state x%x\n",
1501                          vport->port_state);
1502
1503         lpfc_issue_clear_la(phba, vport);
1504         return;
1505 }
1506
1507 /**
1508  * lpfc_sli4_clear_fcf_rr_bmask
1509  * @phba: pointer to the struct lpfc_hba for this port.
1510  * This fucnction resets the round robin bit mask and clears the
1511  * fcf priority list. The list deletions are done while holding the
1512  * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared
1513  * from the lpfc_fcf_pri record.
1514  **/
1515 void
1516 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba)
1517 {
1518         struct lpfc_fcf_pri *fcf_pri;
1519         struct lpfc_fcf_pri *next_fcf_pri;
1520         memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask));
1521         spin_lock_irq(&phba->hbalock);
1522         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
1523                                 &phba->fcf.fcf_pri_list, list) {
1524                 list_del_init(&fcf_pri->list);
1525                 fcf_pri->fcf_rec.flag = 0;
1526         }
1527         spin_unlock_irq(&phba->hbalock);
1528 }
1529 static void
1530 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1531 {
1532         struct lpfc_vport *vport = mboxq->vport;
1533
1534         if (mboxq->u.mb.mbxStatus) {
1535                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1536                                  "2017 REG_FCFI mbxStatus error x%x "
1537                                  "HBA state x%x\n", mboxq->u.mb.mbxStatus,
1538                                  vport->port_state);
1539                 goto fail_out;
1540         }
1541
1542         /* Start FCoE discovery by sending a FLOGI. */
1543         phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1544         /* Set the FCFI registered flag */
1545         spin_lock_irq(&phba->hbalock);
1546         phba->fcf.fcf_flag |= FCF_REGISTERED;
1547         spin_unlock_irq(&phba->hbalock);
1548
1549         /* If there is a pending FCoE event, restart FCF table scan. */
1550         if ((!(phba->hba_flag & FCF_RR_INPROG)) &&
1551                 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF))
1552                 goto fail_out;
1553
1554         /* Mark successful completion of FCF table scan */
1555         spin_lock_irq(&phba->hbalock);
1556         phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1557         phba->hba_flag &= ~FCF_TS_INPROG;
1558         if (vport->port_state != LPFC_FLOGI) {
1559                 phba->hba_flag |= FCF_RR_INPROG;
1560                 spin_unlock_irq(&phba->hbalock);
1561                 lpfc_issue_init_vfi(vport);
1562                 goto out;
1563         }
1564         spin_unlock_irq(&phba->hbalock);
1565         goto out;
1566
1567 fail_out:
1568         spin_lock_irq(&phba->hbalock);
1569         phba->hba_flag &= ~FCF_RR_INPROG;
1570         spin_unlock_irq(&phba->hbalock);
1571 out:
1572         mempool_free(mboxq, phba->mbox_mem_pool);
1573 }
1574
1575 /**
1576  * lpfc_fab_name_match - Check if the fcf fabric name match.
1577  * @fab_name: pointer to fabric name.
1578  * @new_fcf_record: pointer to fcf record.
1579  *
1580  * This routine compare the fcf record's fabric name with provided
1581  * fabric name. If the fabric name are identical this function
1582  * returns 1 else return 0.
1583  **/
1584 static uint32_t
1585 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1586 {
1587         if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1588                 return 0;
1589         if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1590                 return 0;
1591         if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1592                 return 0;
1593         if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1594                 return 0;
1595         if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1596                 return 0;
1597         if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1598                 return 0;
1599         if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1600                 return 0;
1601         if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1602                 return 0;
1603         return 1;
1604 }
1605
1606 /**
1607  * lpfc_sw_name_match - Check if the fcf switch name match.
1608  * @sw_name: pointer to switch name.
1609  * @new_fcf_record: pointer to fcf record.
1610  *
1611  * This routine compare the fcf record's switch name with provided
1612  * switch name. If the switch name are identical this function
1613  * returns 1 else return 0.
1614  **/
1615 static uint32_t
1616 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1617 {
1618         if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1619                 return 0;
1620         if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1621                 return 0;
1622         if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1623                 return 0;
1624         if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1625                 return 0;
1626         if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1627                 return 0;
1628         if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1629                 return 0;
1630         if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1631                 return 0;
1632         if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1633                 return 0;
1634         return 1;
1635 }
1636
1637 /**
1638  * lpfc_mac_addr_match - Check if the fcf mac address match.
1639  * @mac_addr: pointer to mac address.
1640  * @new_fcf_record: pointer to fcf record.
1641  *
1642  * This routine compare the fcf record's mac address with HBA's
1643  * FCF mac address. If the mac addresses are identical this function
1644  * returns 1 else return 0.
1645  **/
1646 static uint32_t
1647 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1648 {
1649         if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1650                 return 0;
1651         if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1652                 return 0;
1653         if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1654                 return 0;
1655         if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1656                 return 0;
1657         if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1658                 return 0;
1659         if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1660                 return 0;
1661         return 1;
1662 }
1663
1664 static bool
1665 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1666 {
1667         return (curr_vlan_id == new_vlan_id);
1668 }
1669
1670 /**
1671  * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record.
1672  * @phba: pointer to lpfc hba data structure.
1673  * @fcf_index: Index for the lpfc_fcf_record.
1674  * @new_fcf_record: pointer to hba fcf record.
1675  *
1676  * This routine updates the driver FCF priority record from the new HBA FCF
1677  * record. The hbalock is asserted held in the code path calling this
1678  * routine.
1679  **/
1680 static void
1681 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index,
1682                                  struct fcf_record *new_fcf_record
1683                                  )
1684 {
1685         struct lpfc_fcf_pri *fcf_pri;
1686
1687         fcf_pri = &phba->fcf.fcf_pri[fcf_index];
1688         fcf_pri->fcf_rec.fcf_index = fcf_index;
1689         /* FCF record priority */
1690         fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
1691
1692 }
1693
1694 /**
1695  * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1696  * @fcf_rec: pointer to driver fcf record.
1697  * @new_fcf_record: pointer to fcf record.
1698  *
1699  * This routine copies the FCF information from the FCF
1700  * record to lpfc_hba data structure.
1701  **/
1702 static void
1703 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1704                      struct fcf_record *new_fcf_record)
1705 {
1706         /* Fabric name */
1707         fcf_rec->fabric_name[0] =
1708                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1709         fcf_rec->fabric_name[1] =
1710                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1711         fcf_rec->fabric_name[2] =
1712                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1713         fcf_rec->fabric_name[3] =
1714                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1715         fcf_rec->fabric_name[4] =
1716                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1717         fcf_rec->fabric_name[5] =
1718                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1719         fcf_rec->fabric_name[6] =
1720                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1721         fcf_rec->fabric_name[7] =
1722                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1723         /* Mac address */
1724         fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1725         fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1726         fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1727         fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1728         fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1729         fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1730         /* FCF record index */
1731         fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1732         /* FCF record priority */
1733         fcf_rec->priority = new_fcf_record->fip_priority;
1734         /* Switch name */
1735         fcf_rec->switch_name[0] =
1736                 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1737         fcf_rec->switch_name[1] =
1738                 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1739         fcf_rec->switch_name[2] =
1740                 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1741         fcf_rec->switch_name[3] =
1742                 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1743         fcf_rec->switch_name[4] =
1744                 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1745         fcf_rec->switch_name[5] =
1746                 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1747         fcf_rec->switch_name[6] =
1748                 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1749         fcf_rec->switch_name[7] =
1750                 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1751 }
1752
1753 /**
1754  * __lpfc_update_fcf_record - Update driver fcf record
1755  * @phba: pointer to lpfc hba data structure.
1756  * @fcf_rec: pointer to driver fcf record.
1757  * @new_fcf_record: pointer to hba fcf record.
1758  * @addr_mode: address mode to be set to the driver fcf record.
1759  * @vlan_id: vlan tag to be set to the driver fcf record.
1760  * @flag: flag bits to be set to the driver fcf record.
1761  *
1762  * This routine updates the driver FCF record from the new HBA FCF record
1763  * together with the address mode, vlan_id, and other informations. This
1764  * routine is called with the hbalock held.
1765  **/
1766 static void
1767 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1768                        struct fcf_record *new_fcf_record, uint32_t addr_mode,
1769                        uint16_t vlan_id, uint32_t flag)
1770 {
1771         lockdep_assert_held(&phba->hbalock);
1772
1773         /* Copy the fields from the HBA's FCF record */
1774         lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1775         /* Update other fields of driver FCF record */
1776         fcf_rec->addr_mode = addr_mode;
1777         fcf_rec->vlan_id = vlan_id;
1778         fcf_rec->flag |= (flag | RECORD_VALID);
1779         __lpfc_update_fcf_record_pri(phba,
1780                 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record),
1781                                  new_fcf_record);
1782 }
1783
1784 /**
1785  * lpfc_register_fcf - Register the FCF with hba.
1786  * @phba: pointer to lpfc hba data structure.
1787  *
1788  * This routine issues a register fcfi mailbox command to register
1789  * the fcf with HBA.
1790  **/
1791 static void
1792 lpfc_register_fcf(struct lpfc_hba *phba)
1793 {
1794         LPFC_MBOXQ_t *fcf_mbxq;
1795         int rc;
1796
1797         spin_lock_irq(&phba->hbalock);
1798         /* If the FCF is not available do nothing. */
1799         if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1800                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1801                 spin_unlock_irq(&phba->hbalock);
1802                 return;
1803         }
1804
1805         /* The FCF is already registered, start discovery */
1806         if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1807                 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1808                 phba->hba_flag &= ~FCF_TS_INPROG;
1809                 if (phba->pport->port_state != LPFC_FLOGI &&
1810                     phba->pport->fc_flag & FC_FABRIC) {
1811                         phba->hba_flag |= FCF_RR_INPROG;
1812                         spin_unlock_irq(&phba->hbalock);
1813                         lpfc_initial_flogi(phba->pport);
1814                         return;
1815                 }
1816                 spin_unlock_irq(&phba->hbalock);
1817                 return;
1818         }
1819         spin_unlock_irq(&phba->hbalock);
1820
1821         fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1822         if (!fcf_mbxq) {
1823                 spin_lock_irq(&phba->hbalock);
1824                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1825                 spin_unlock_irq(&phba->hbalock);
1826                 return;
1827         }
1828
1829         lpfc_reg_fcfi(phba, fcf_mbxq);
1830         fcf_mbxq->vport = phba->pport;
1831         fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1832         rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1833         if (rc == MBX_NOT_FINISHED) {
1834                 spin_lock_irq(&phba->hbalock);
1835                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1836                 spin_unlock_irq(&phba->hbalock);
1837                 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1838         }
1839
1840         return;
1841 }
1842
1843 /**
1844  * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1845  * @phba: pointer to lpfc hba data structure.
1846  * @new_fcf_record: pointer to fcf record.
1847  * @boot_flag: Indicates if this record used by boot bios.
1848  * @addr_mode: The address mode to be used by this FCF
1849  * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1850  *
1851  * This routine compare the fcf record with connect list obtained from the
1852  * config region to decide if this FCF can be used for SAN discovery. It returns
1853  * 1 if this record can be used for SAN discovery else return zero. If this FCF
1854  * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1855  * is used by boot bios and addr_mode will indicate the addressing mode to be
1856  * used for this FCF when the function returns.
1857  * If the FCF record need to be used with a particular vlan id, the vlan is
1858  * set in the vlan_id on return of the function. If not VLAN tagging need to
1859  * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
1860  **/
1861 static int
1862 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1863                         struct fcf_record *new_fcf_record,
1864                         uint32_t *boot_flag, uint32_t *addr_mode,
1865                         uint16_t *vlan_id)
1866 {
1867         struct lpfc_fcf_conn_entry *conn_entry;
1868         int i, j, fcf_vlan_id = 0;
1869
1870         /* Find the lowest VLAN id in the FCF record */
1871         for (i = 0; i < 512; i++) {
1872                 if (new_fcf_record->vlan_bitmap[i]) {
1873                         fcf_vlan_id = i * 8;
1874                         j = 0;
1875                         while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1876                                 j++;
1877                                 fcf_vlan_id++;
1878                         }
1879                         break;
1880                 }
1881         }
1882
1883         /* FCF not valid/available or solicitation in progress */
1884         if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1885             !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) ||
1886             bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record))
1887                 return 0;
1888
1889         if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1890                 *boot_flag = 0;
1891                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1892                                 new_fcf_record);
1893                 if (phba->valid_vlan)
1894                         *vlan_id = phba->vlan_id;
1895                 else
1896                         *vlan_id = LPFC_FCOE_NULL_VID;
1897                 return 1;
1898         }
1899
1900         /*
1901          * If there are no FCF connection table entry, driver connect to all
1902          * FCFs.
1903          */
1904         if (list_empty(&phba->fcf_conn_rec_list)) {
1905                 *boot_flag = 0;
1906                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1907                         new_fcf_record);
1908
1909                 /*
1910                  * When there are no FCF connect entries, use driver's default
1911                  * addressing mode - FPMA.
1912                  */
1913                 if (*addr_mode & LPFC_FCF_FPMA)
1914                         *addr_mode = LPFC_FCF_FPMA;
1915
1916                 /* If FCF record report a vlan id use that vlan id */
1917                 if (fcf_vlan_id)
1918                         *vlan_id = fcf_vlan_id;
1919                 else
1920                         *vlan_id = LPFC_FCOE_NULL_VID;
1921                 return 1;
1922         }
1923
1924         list_for_each_entry(conn_entry,
1925                             &phba->fcf_conn_rec_list, list) {
1926                 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1927                         continue;
1928
1929                 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1930                         !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1931                                              new_fcf_record))
1932                         continue;
1933                 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
1934                         !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
1935                                             new_fcf_record))
1936                         continue;
1937                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1938                         /*
1939                          * If the vlan bit map does not have the bit set for the
1940                          * vlan id to be used, then it is not a match.
1941                          */
1942                         if (!(new_fcf_record->vlan_bitmap
1943                                 [conn_entry->conn_rec.vlan_tag / 8] &
1944                                 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
1945                                 continue;
1946                 }
1947
1948                 /*
1949                  * If connection record does not support any addressing mode,
1950                  * skip the FCF record.
1951                  */
1952                 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
1953                         & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
1954                         continue;
1955
1956                 /*
1957                  * Check if the connection record specifies a required
1958                  * addressing mode.
1959                  */
1960                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1961                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
1962
1963                         /*
1964                          * If SPMA required but FCF not support this continue.
1965                          */
1966                         if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1967                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1968                                         new_fcf_record) & LPFC_FCF_SPMA))
1969                                 continue;
1970
1971                         /*
1972                          * If FPMA required but FCF not support this continue.
1973                          */
1974                         if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1975                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1976                                 new_fcf_record) & LPFC_FCF_FPMA))
1977                                 continue;
1978                 }
1979
1980                 /*
1981                  * This fcf record matches filtering criteria.
1982                  */
1983                 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
1984                         *boot_flag = 1;
1985                 else
1986                         *boot_flag = 0;
1987
1988                 /*
1989                  * If user did not specify any addressing mode, or if the
1990                  * preferred addressing mode specified by user is not supported
1991                  * by FCF, allow fabric to pick the addressing mode.
1992                  */
1993                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1994                                 new_fcf_record);
1995                 /*
1996                  * If the user specified a required address mode, assign that
1997                  * address mode
1998                  */
1999                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2000                         (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
2001                         *addr_mode = (conn_entry->conn_rec.flags &
2002                                 FCFCNCT_AM_SPMA) ?
2003                                 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
2004                 /*
2005                  * If the user specified a preferred address mode, use the
2006                  * addr mode only if FCF support the addr_mode.
2007                  */
2008                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2009                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
2010                         (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2011                         (*addr_mode & LPFC_FCF_SPMA))
2012                                 *addr_mode = LPFC_FCF_SPMA;
2013                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2014                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
2015                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2016                         (*addr_mode & LPFC_FCF_FPMA))
2017                                 *addr_mode = LPFC_FCF_FPMA;
2018
2019                 /* If matching connect list has a vlan id, use it */
2020                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
2021                         *vlan_id = conn_entry->conn_rec.vlan_tag;
2022                 /*
2023                  * If no vlan id is specified in connect list, use the vlan id
2024                  * in the FCF record
2025                  */
2026                 else if (fcf_vlan_id)
2027                         *vlan_id = fcf_vlan_id;
2028                 else
2029                         *vlan_id = LPFC_FCOE_NULL_VID;
2030
2031                 return 1;
2032         }
2033
2034         return 0;
2035 }
2036
2037 /**
2038  * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
2039  * @phba: pointer to lpfc hba data structure.
2040  * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
2041  *
2042  * This function check if there is any fcoe event pending while driver
2043  * scan FCF entries. If there is any pending event, it will restart the
2044  * FCF saning and return 1 else return 0.
2045  */
2046 int
2047 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
2048 {
2049         /*
2050          * If the Link is up and no FCoE events while in the
2051          * FCF discovery, no need to restart FCF discovery.
2052          */
2053         if ((phba->link_state  >= LPFC_LINK_UP) &&
2054             (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
2055                 return 0;
2056
2057         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2058                         "2768 Pending link or FCF event during current "
2059                         "handling of the previous event: link_state:x%x, "
2060                         "evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
2061                         phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
2062                         phba->fcoe_eventtag);
2063
2064         spin_lock_irq(&phba->hbalock);
2065         phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
2066         spin_unlock_irq(&phba->hbalock);
2067
2068         if (phba->link_state >= LPFC_LINK_UP) {
2069                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
2070                                 "2780 Restart FCF table scan due to "
2071                                 "pending FCF event:evt_tag_at_scan:x%x, "
2072                                 "evt_tag_current:x%x\n",
2073                                 phba->fcoe_eventtag_at_fcf_scan,
2074                                 phba->fcoe_eventtag);
2075                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
2076         } else {
2077                 /*
2078                  * Do not continue FCF discovery and clear FCF_TS_INPROG
2079                  * flag
2080                  */
2081                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
2082                                 "2833 Stop FCF discovery process due to link "
2083                                 "state change (x%x)\n", phba->link_state);
2084                 spin_lock_irq(&phba->hbalock);
2085                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
2086                 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
2087                 spin_unlock_irq(&phba->hbalock);
2088         }
2089
2090         /* Unregister the currently registered FCF if required */
2091         if (unreg_fcf) {
2092                 spin_lock_irq(&phba->hbalock);
2093                 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
2094                 spin_unlock_irq(&phba->hbalock);
2095                 lpfc_sli4_unregister_fcf(phba);
2096         }
2097         return 1;
2098 }
2099
2100 /**
2101  * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
2102  * @phba: pointer to lpfc hba data structure.
2103  * @fcf_cnt: number of eligible fcf record seen so far.
2104  *
2105  * This function makes an running random selection decision on FCF record to
2106  * use through a sequence of @fcf_cnt eligible FCF records with equal
2107  * probability. To perform integer manunipulation of random numbers with
2108  * size unit32_t, the lower 16 bits of the 32-bit random number returned
2109  * from prandom_u32() are taken as the random random number generated.
2110  *
2111  * Returns true when outcome is for the newly read FCF record should be
2112  * chosen; otherwise, return false when outcome is for keeping the previously
2113  * chosen FCF record.
2114  **/
2115 static bool
2116 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
2117 {
2118         uint32_t rand_num;
2119
2120         /* Get 16-bit uniform random number */
2121         rand_num = 0xFFFF & prandom_u32();
2122
2123         /* Decision with probability 1/fcf_cnt */
2124         if ((fcf_cnt * rand_num) < 0xFFFF)
2125                 return true;
2126         else
2127                 return false;
2128 }
2129
2130 /**
2131  * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
2132  * @phba: pointer to lpfc hba data structure.
2133  * @mboxq: pointer to mailbox object.
2134  * @next_fcf_index: pointer to holder of next fcf index.
2135  *
2136  * This routine parses the non-embedded fcf mailbox command by performing the
2137  * necessarily error checking, non-embedded read FCF record mailbox command
2138  * SGE parsing, and endianness swapping.
2139  *
2140  * Returns the pointer to the new FCF record in the non-embedded mailbox
2141  * command DMA memory if successfully, other NULL.
2142  */
2143 static struct fcf_record *
2144 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
2145                              uint16_t *next_fcf_index)
2146 {
2147         void *virt_addr;
2148         struct lpfc_mbx_sge sge;
2149         struct lpfc_mbx_read_fcf_tbl *read_fcf;
2150         uint32_t shdr_status, shdr_add_status, if_type;
2151         union lpfc_sli4_cfg_shdr *shdr;
2152         struct fcf_record *new_fcf_record;
2153
2154         /* Get the first SGE entry from the non-embedded DMA memory. This
2155          * routine only uses a single SGE.
2156          */
2157         lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
2158         if (unlikely(!mboxq->sge_array)) {
2159                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2160                                 "2524 Failed to get the non-embedded SGE "
2161                                 "virtual address\n");
2162                 return NULL;
2163         }
2164         virt_addr = mboxq->sge_array->addr[0];
2165
2166         shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
2167         lpfc_sli_pcimem_bcopy(shdr, shdr,
2168                               sizeof(union lpfc_sli4_cfg_shdr));
2169         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
2170         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
2171         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
2172         if (shdr_status || shdr_add_status) {
2173                 if (shdr_status == STATUS_FCF_TABLE_EMPTY ||
2174                                         if_type == LPFC_SLI_INTF_IF_TYPE_2)
2175                         lpfc_printf_log(phba, KERN_ERR,
2176                                         LOG_TRACE_EVENT,
2177                                         "2726 READ_FCF_RECORD Indicates empty "
2178                                         "FCF table.\n");
2179                 else
2180                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2181                                         "2521 READ_FCF_RECORD mailbox failed "
2182                                         "with status x%x add_status x%x, "
2183                                         "mbx\n", shdr_status, shdr_add_status);
2184                 return NULL;
2185         }
2186
2187         /* Interpreting the returned information of the FCF record */
2188         read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
2189         lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
2190                               sizeof(struct lpfc_mbx_read_fcf_tbl));
2191         *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
2192         new_fcf_record = (struct fcf_record *)(virt_addr +
2193                           sizeof(struct lpfc_mbx_read_fcf_tbl));
2194         lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
2195                                 offsetof(struct fcf_record, vlan_bitmap));
2196         new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
2197         new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
2198
2199         return new_fcf_record;
2200 }
2201
2202 /**
2203  * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
2204  * @phba: pointer to lpfc hba data structure.
2205  * @fcf_record: pointer to the fcf record.
2206  * @vlan_id: the lowest vlan identifier associated to this fcf record.
2207  * @next_fcf_index: the index to the next fcf record in hba's fcf table.
2208  *
2209  * This routine logs the detailed FCF record if the LOG_FIP loggin is
2210  * enabled.
2211  **/
2212 static void
2213 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
2214                               struct fcf_record *fcf_record,
2215                               uint16_t vlan_id,
2216                               uint16_t next_fcf_index)
2217 {
2218         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2219                         "2764 READ_FCF_RECORD:\n"
2220                         "\tFCF_Index     : x%x\n"
2221                         "\tFCF_Avail     : x%x\n"
2222                         "\tFCF_Valid     : x%x\n"
2223                         "\tFCF_SOL       : x%x\n"
2224                         "\tFIP_Priority  : x%x\n"
2225                         "\tMAC_Provider  : x%x\n"
2226                         "\tLowest VLANID : x%x\n"
2227                         "\tFCF_MAC Addr  : x%x:%x:%x:%x:%x:%x\n"
2228                         "\tFabric_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
2229                         "\tSwitch_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
2230                         "\tNext_FCF_Index: x%x\n",
2231                         bf_get(lpfc_fcf_record_fcf_index, fcf_record),
2232                         bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
2233                         bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
2234                         bf_get(lpfc_fcf_record_fcf_sol, fcf_record),
2235                         fcf_record->fip_priority,
2236                         bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
2237                         vlan_id,
2238                         bf_get(lpfc_fcf_record_mac_0, fcf_record),
2239                         bf_get(lpfc_fcf_record_mac_1, fcf_record),
2240                         bf_get(lpfc_fcf_record_mac_2, fcf_record),
2241                         bf_get(lpfc_fcf_record_mac_3, fcf_record),
2242                         bf_get(lpfc_fcf_record_mac_4, fcf_record),
2243                         bf_get(lpfc_fcf_record_mac_5, fcf_record),
2244                         bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
2245                         bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
2246                         bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
2247                         bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
2248                         bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
2249                         bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
2250                         bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
2251                         bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
2252                         bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
2253                         bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
2254                         bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
2255                         bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
2256                         bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
2257                         bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
2258                         bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
2259                         bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
2260                         next_fcf_index);
2261 }
2262
2263 /**
2264  * lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
2265  * @phba: pointer to lpfc hba data structure.
2266  * @fcf_rec: pointer to an existing FCF record.
2267  * @new_fcf_record: pointer to a new FCF record.
2268  * @new_vlan_id: vlan id from the new FCF record.
2269  *
2270  * This function performs matching test of a new FCF record against an existing
2271  * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
2272  * will not be used as part of the FCF record matching criteria.
2273  *
2274  * Returns true if all the fields matching, otherwise returns false.
2275  */
2276 static bool
2277 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
2278                            struct lpfc_fcf_rec *fcf_rec,
2279                            struct fcf_record *new_fcf_record,
2280                            uint16_t new_vlan_id)
2281 {
2282         if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
2283                 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
2284                         return false;
2285         if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
2286                 return false;
2287         if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
2288                 return false;
2289         if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
2290                 return false;
2291         if (fcf_rec->priority != new_fcf_record->fip_priority)
2292                 return false;
2293         return true;
2294 }
2295
2296 /**
2297  * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf
2298  * @vport: Pointer to vport object.
2299  * @fcf_index: index to next fcf.
2300  *
2301  * This function processing the roundrobin fcf failover to next fcf index.
2302  * When this function is invoked, there will be a current fcf registered
2303  * for flogi.
2304  * Return: 0 for continue retrying flogi on currently registered fcf;
2305  *         1 for stop flogi on currently registered fcf;
2306  */
2307 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index)
2308 {
2309         struct lpfc_hba *phba = vport->phba;
2310         int rc;
2311
2312         if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
2313                 spin_lock_irq(&phba->hbalock);
2314                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2315                         spin_unlock_irq(&phba->hbalock);
2316                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2317                                         "2872 Devloss tmo with no eligible "
2318                                         "FCF, unregister in-use FCF (x%x) "
2319                                         "and rescan FCF table\n",
2320                                         phba->fcf.current_rec.fcf_indx);
2321                         lpfc_unregister_fcf_rescan(phba);
2322                         goto stop_flogi_current_fcf;
2323                 }
2324                 /* Mark the end to FLOGI roundrobin failover */
2325                 phba->hba_flag &= ~FCF_RR_INPROG;
2326                 /* Allow action to new fcf asynchronous event */
2327                 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
2328                 spin_unlock_irq(&phba->hbalock);
2329                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2330                                 "2865 No FCF available, stop roundrobin FCF "
2331                                 "failover and change port state:x%x/x%x\n",
2332                                 phba->pport->port_state, LPFC_VPORT_UNKNOWN);
2333                 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
2334
2335                 if (!phba->fcf.fcf_redisc_attempted) {
2336                         lpfc_unregister_fcf(phba);
2337
2338                         rc = lpfc_sli4_redisc_fcf_table(phba);
2339                         if (!rc) {
2340                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2341                                                 "3195 Rediscover FCF table\n");
2342                                 phba->fcf.fcf_redisc_attempted = 1;
2343                                 lpfc_sli4_clear_fcf_rr_bmask(phba);
2344                         } else {
2345                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2346                                                 "3196 Rediscover FCF table "
2347                                                 "failed. Status:x%x\n", rc);
2348                         }
2349                 } else {
2350                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2351                                         "3197 Already rediscover FCF table "
2352                                         "attempted. No more retry\n");
2353                 }
2354                 goto stop_flogi_current_fcf;
2355         } else {
2356                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS,
2357                                 "2794 Try FLOGI roundrobin FCF failover to "
2358                                 "(x%x)\n", fcf_index);
2359                 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index);
2360                 if (rc)
2361                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
2362                                         "2761 FLOGI roundrobin FCF failover "
2363                                         "failed (rc:x%x) to read FCF (x%x)\n",
2364                                         rc, phba->fcf.current_rec.fcf_indx);
2365                 else
2366                         goto stop_flogi_current_fcf;
2367         }
2368         return 0;
2369
2370 stop_flogi_current_fcf:
2371         lpfc_can_disctmo(vport);
2372         return 1;
2373 }
2374
2375 /**
2376  * lpfc_sli4_fcf_pri_list_del
2377  * @phba: pointer to lpfc hba data structure.
2378  * @fcf_index: the index of the fcf record to delete
2379  * This routine checks the on list flag of the fcf_index to be deleted.
2380  * If it is one the list then it is removed from the list, and the flag
2381  * is cleared. This routine grab the hbalock before removing the fcf
2382  * record from the list.
2383  **/
2384 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba,
2385                         uint16_t fcf_index)
2386 {
2387         struct lpfc_fcf_pri *new_fcf_pri;
2388
2389         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2390         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2391                 "3058 deleting idx x%x pri x%x flg x%x\n",
2392                 fcf_index, new_fcf_pri->fcf_rec.priority,
2393                  new_fcf_pri->fcf_rec.flag);
2394         spin_lock_irq(&phba->hbalock);
2395         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) {
2396                 if (phba->fcf.current_rec.priority ==
2397                                 new_fcf_pri->fcf_rec.priority)
2398                         phba->fcf.eligible_fcf_cnt--;
2399                 list_del_init(&new_fcf_pri->list);
2400                 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST;
2401         }
2402         spin_unlock_irq(&phba->hbalock);
2403 }
2404
2405 /**
2406  * lpfc_sli4_set_fcf_flogi_fail
2407  * @phba: pointer to lpfc hba data structure.
2408  * @fcf_index: the index of the fcf record to update
2409  * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED
2410  * flag so the the round robin slection for the particular priority level
2411  * will try a different fcf record that does not have this bit set.
2412  * If the fcf record is re-read for any reason this flag is cleared brfore
2413  * adding it to the priority list.
2414  **/
2415 void
2416 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index)
2417 {
2418         struct lpfc_fcf_pri *new_fcf_pri;
2419         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2420         spin_lock_irq(&phba->hbalock);
2421         new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED;
2422         spin_unlock_irq(&phba->hbalock);
2423 }
2424
2425 /**
2426  * lpfc_sli4_fcf_pri_list_add
2427  * @phba: pointer to lpfc hba data structure.
2428  * @fcf_index: the index of the fcf record to add
2429  * @new_fcf_record: pointer to a new FCF record.
2430  * This routine checks the priority of the fcf_index to be added.
2431  * If it is a lower priority than the current head of the fcf_pri list
2432  * then it is added to the list in the right order.
2433  * If it is the same priority as the current head of the list then it
2434  * is added to the head of the list and its bit in the rr_bmask is set.
2435  * If the fcf_index to be added is of a higher priority than the current
2436  * head of the list then the rr_bmask is cleared, its bit is set in the
2437  * rr_bmask and it is added to the head of the list.
2438  * returns:
2439  * 0=success 1=failure
2440  **/
2441 static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba,
2442         uint16_t fcf_index,
2443         struct fcf_record *new_fcf_record)
2444 {
2445         uint16_t current_fcf_pri;
2446         uint16_t last_index;
2447         struct lpfc_fcf_pri *fcf_pri;
2448         struct lpfc_fcf_pri *next_fcf_pri;
2449         struct lpfc_fcf_pri *new_fcf_pri;
2450         int ret;
2451
2452         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2453         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2454                 "3059 adding idx x%x pri x%x flg x%x\n",
2455                 fcf_index, new_fcf_record->fip_priority,
2456                  new_fcf_pri->fcf_rec.flag);
2457         spin_lock_irq(&phba->hbalock);
2458         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST)
2459                 list_del_init(&new_fcf_pri->list);
2460         new_fcf_pri->fcf_rec.fcf_index = fcf_index;
2461         new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
2462         if (list_empty(&phba->fcf.fcf_pri_list)) {
2463                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2464                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2465                                 new_fcf_pri->fcf_rec.fcf_index);
2466                 goto out;
2467         }
2468
2469         last_index = find_first_bit(phba->fcf.fcf_rr_bmask,
2470                                 LPFC_SLI4_FCF_TBL_INDX_MAX);
2471         if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
2472                 ret = 0; /* Empty rr list */
2473                 goto out;
2474         }
2475         current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority;
2476         if (new_fcf_pri->fcf_rec.priority <=  current_fcf_pri) {
2477                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2478                 if (new_fcf_pri->fcf_rec.priority <  current_fcf_pri) {
2479                         memset(phba->fcf.fcf_rr_bmask, 0,
2480                                 sizeof(*phba->fcf.fcf_rr_bmask));
2481                         /* fcfs_at_this_priority_level = 1; */
2482                         phba->fcf.eligible_fcf_cnt = 1;
2483                 } else
2484                         /* fcfs_at_this_priority_level++; */
2485                         phba->fcf.eligible_fcf_cnt++;
2486                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2487                                 new_fcf_pri->fcf_rec.fcf_index);
2488                 goto out;
2489         }
2490
2491         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
2492                                 &phba->fcf.fcf_pri_list, list) {
2493                 if (new_fcf_pri->fcf_rec.priority <=
2494                                 fcf_pri->fcf_rec.priority) {
2495                         if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list)
2496                                 list_add(&new_fcf_pri->list,
2497                                                 &phba->fcf.fcf_pri_list);
2498                         else
2499                                 list_add(&new_fcf_pri->list,
2500                                          &((struct lpfc_fcf_pri *)
2501                                         fcf_pri->list.prev)->list);
2502                         ret = 0;
2503                         goto out;
2504                 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list
2505                         || new_fcf_pri->fcf_rec.priority <
2506                                 next_fcf_pri->fcf_rec.priority) {
2507                         list_add(&new_fcf_pri->list, &fcf_pri->list);
2508                         ret = 0;
2509                         goto out;
2510                 }
2511                 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority)
2512                         continue;
2513
2514         }
2515         ret = 1;
2516 out:
2517         /* we use = instead of |= to clear the FLOGI_FAILED flag. */
2518         new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST;
2519         spin_unlock_irq(&phba->hbalock);
2520         return ret;
2521 }
2522
2523 /**
2524  * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
2525  * @phba: pointer to lpfc hba data structure.
2526  * @mboxq: pointer to mailbox object.
2527  *
2528  * This function iterates through all the fcf records available in
2529  * HBA and chooses the optimal FCF record for discovery. After finding
2530  * the FCF for discovery it registers the FCF record and kicks start
2531  * discovery.
2532  * If FCF_IN_USE flag is set in currently used FCF, the routine tries to
2533  * use an FCF record which matches fabric name and mac address of the
2534  * currently used FCF record.
2535  * If the driver supports only one FCF, it will try to use the FCF record
2536  * used by BOOT_BIOS.
2537  */
2538 void
2539 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2540 {
2541         struct fcf_record *new_fcf_record;
2542         uint32_t boot_flag, addr_mode;
2543         uint16_t fcf_index, next_fcf_index;
2544         struct lpfc_fcf_rec *fcf_rec = NULL;
2545         uint16_t vlan_id = LPFC_FCOE_NULL_VID;
2546         bool select_new_fcf;
2547         int rc;
2548
2549         /* If there is pending FCoE event restart FCF table scan */
2550         if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) {
2551                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2552                 return;
2553         }
2554
2555         /* Parse the FCF record from the non-embedded mailbox command */
2556         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2557                                                       &next_fcf_index);
2558         if (!new_fcf_record) {
2559                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2560                                 "2765 Mailbox command READ_FCF_RECORD "
2561                                 "failed to retrieve a FCF record.\n");
2562                 /* Let next new FCF event trigger fast failover */
2563                 spin_lock_irq(&phba->hbalock);
2564                 phba->hba_flag &= ~FCF_TS_INPROG;
2565                 spin_unlock_irq(&phba->hbalock);
2566                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2567                 return;
2568         }
2569
2570         /* Check the FCF record against the connection list */
2571         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2572                                       &addr_mode, &vlan_id);
2573
2574         /* Log the FCF record information if turned on */
2575         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2576                                       next_fcf_index);
2577
2578         /*
2579          * If the fcf record does not match with connect list entries
2580          * read the next entry; otherwise, this is an eligible FCF
2581          * record for roundrobin FCF failover.
2582          */
2583         if (!rc) {
2584                 lpfc_sli4_fcf_pri_list_del(phba,
2585                                         bf_get(lpfc_fcf_record_fcf_index,
2586                                                new_fcf_record));
2587                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2588                                 "2781 FCF (x%x) failed connection "
2589                                 "list check: (x%x/x%x/%x)\n",
2590                                 bf_get(lpfc_fcf_record_fcf_index,
2591                                        new_fcf_record),
2592                                 bf_get(lpfc_fcf_record_fcf_avail,
2593                                        new_fcf_record),
2594                                 bf_get(lpfc_fcf_record_fcf_valid,
2595                                        new_fcf_record),
2596                                 bf_get(lpfc_fcf_record_fcf_sol,
2597                                        new_fcf_record));
2598                 if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
2599                     lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2600                     new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
2601                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) !=
2602                             phba->fcf.current_rec.fcf_indx) {
2603                                 lpfc_printf_log(phba, KERN_ERR,
2604                                                 LOG_TRACE_EVENT,
2605                                         "2862 FCF (x%x) matches property "
2606                                         "of in-use FCF (x%x)\n",
2607                                         bf_get(lpfc_fcf_record_fcf_index,
2608                                                new_fcf_record),
2609                                         phba->fcf.current_rec.fcf_indx);
2610                                 goto read_next_fcf;
2611                         }
2612                         /*
2613                          * In case the current in-use FCF record becomes
2614                          * invalid/unavailable during FCF discovery that
2615                          * was not triggered by fast FCF failover process,
2616                          * treat it as fast FCF failover.
2617                          */
2618                         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
2619                             !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2620                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2621                                                 "2835 Invalid in-use FCF "
2622                                                 "(x%x), enter FCF failover "
2623                                                 "table scan.\n",
2624                                                 phba->fcf.current_rec.fcf_indx);
2625                                 spin_lock_irq(&phba->hbalock);
2626                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2627                                 spin_unlock_irq(&phba->hbalock);
2628                                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2629                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2630                                                 LPFC_FCOE_FCF_GET_FIRST);
2631                                 return;
2632                         }
2633                 }
2634                 goto read_next_fcf;
2635         } else {
2636                 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2637                 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index,
2638                                                         new_fcf_record);
2639                 if (rc)
2640                         goto read_next_fcf;
2641         }
2642
2643         /*
2644          * If this is not the first FCF discovery of the HBA, use last
2645          * FCF record for the discovery. The condition that a rescan
2646          * matches the in-use FCF record: fabric name, switch name, mac
2647          * address, and vlan_id.
2648          */
2649         spin_lock_irq(&phba->hbalock);
2650         if (phba->fcf.fcf_flag & FCF_IN_USE) {
2651                 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2652                         lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2653                     new_fcf_record, vlan_id)) {
2654                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) ==
2655                             phba->fcf.current_rec.fcf_indx) {
2656                                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2657                                 if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
2658                                         /* Stop FCF redisc wait timer */
2659                                         __lpfc_sli4_stop_fcf_redisc_wait_timer(
2660                                                                         phba);
2661                                 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2662                                         /* Fast failover, mark completed */
2663                                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2664                                 spin_unlock_irq(&phba->hbalock);
2665                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2666                                                 "2836 New FCF matches in-use "
2667                                                 "FCF (x%x), port_state:x%x, "
2668                                                 "fc_flag:x%x\n",
2669                                                 phba->fcf.current_rec.fcf_indx,
2670                                                 phba->pport->port_state,
2671                                                 phba->pport->fc_flag);
2672                                 goto out;
2673                         } else
2674                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2675                                         "2863 New FCF (x%x) matches "
2676                                         "property of in-use FCF (x%x)\n",
2677                                         bf_get(lpfc_fcf_record_fcf_index,
2678                                                new_fcf_record),
2679                                         phba->fcf.current_rec.fcf_indx);
2680                 }
2681                 /*
2682                  * Read next FCF record from HBA searching for the matching
2683                  * with in-use record only if not during the fast failover
2684                  * period. In case of fast failover period, it shall try to
2685                  * determine whether the FCF record just read should be the
2686                  * next candidate.
2687                  */
2688                 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2689                         spin_unlock_irq(&phba->hbalock);
2690                         goto read_next_fcf;
2691                 }
2692         }
2693         /*
2694          * Update on failover FCF record only if it's in FCF fast-failover
2695          * period; otherwise, update on current FCF record.
2696          */
2697         if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2698                 fcf_rec = &phba->fcf.failover_rec;
2699         else
2700                 fcf_rec = &phba->fcf.current_rec;
2701
2702         if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
2703                 /*
2704                  * If the driver FCF record does not have boot flag
2705                  * set and new hba fcf record has boot flag set, use
2706                  * the new hba fcf record.
2707                  */
2708                 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
2709                         /* Choose this FCF record */
2710                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2711                                         "2837 Update current FCF record "
2712                                         "(x%x) with new FCF record (x%x)\n",
2713                                         fcf_rec->fcf_indx,
2714                                         bf_get(lpfc_fcf_record_fcf_index,
2715                                         new_fcf_record));
2716                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2717                                         addr_mode, vlan_id, BOOT_ENABLE);
2718                         spin_unlock_irq(&phba->hbalock);
2719                         goto read_next_fcf;
2720                 }
2721                 /*
2722                  * If the driver FCF record has boot flag set and the
2723                  * new hba FCF record does not have boot flag, read
2724                  * the next FCF record.
2725                  */
2726                 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
2727                         spin_unlock_irq(&phba->hbalock);
2728                         goto read_next_fcf;
2729                 }
2730                 /*
2731                  * If the new hba FCF record has lower priority value
2732                  * than the driver FCF record, use the new record.
2733                  */
2734                 if (new_fcf_record->fip_priority < fcf_rec->priority) {
2735                         /* Choose the new FCF record with lower priority */
2736                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2737                                         "2838 Update current FCF record "
2738                                         "(x%x) with new FCF record (x%x)\n",
2739                                         fcf_rec->fcf_indx,
2740                                         bf_get(lpfc_fcf_record_fcf_index,
2741                                                new_fcf_record));
2742                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2743                                         addr_mode, vlan_id, 0);
2744                         /* Reset running random FCF selection count */
2745                         phba->fcf.eligible_fcf_cnt = 1;
2746                 } else if (new_fcf_record->fip_priority == fcf_rec->priority) {
2747                         /* Update running random FCF selection count */
2748                         phba->fcf.eligible_fcf_cnt++;
2749                         select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
2750                                                 phba->fcf.eligible_fcf_cnt);
2751                         if (select_new_fcf) {
2752                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2753                                         "2839 Update current FCF record "
2754                                         "(x%x) with new FCF record (x%x)\n",
2755                                         fcf_rec->fcf_indx,
2756                                         bf_get(lpfc_fcf_record_fcf_index,
2757                                                new_fcf_record));
2758                                 /* Choose the new FCF by random selection */
2759                                 __lpfc_update_fcf_record(phba, fcf_rec,
2760                                                          new_fcf_record,
2761                                                          addr_mode, vlan_id, 0);
2762                         }
2763                 }
2764                 spin_unlock_irq(&phba->hbalock);
2765                 goto read_next_fcf;
2766         }
2767         /*
2768          * This is the first suitable FCF record, choose this record for
2769          * initial best-fit FCF.
2770          */
2771         if (fcf_rec) {
2772                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2773                                 "2840 Update initial FCF candidate "
2774                                 "with FCF (x%x)\n",
2775                                 bf_get(lpfc_fcf_record_fcf_index,
2776                                        new_fcf_record));
2777                 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2778                                          addr_mode, vlan_id, (boot_flag ?
2779                                          BOOT_ENABLE : 0));
2780                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2781                 /* Setup initial running random FCF selection count */
2782                 phba->fcf.eligible_fcf_cnt = 1;
2783         }
2784         spin_unlock_irq(&phba->hbalock);
2785         goto read_next_fcf;
2786
2787 read_next_fcf:
2788         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2789         if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
2790                 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
2791                         /*
2792                          * Case of FCF fast failover scan
2793                          */
2794
2795                         /*
2796                          * It has not found any suitable FCF record, cancel
2797                          * FCF scan inprogress, and do nothing
2798                          */
2799                         if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
2800                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2801                                                "2782 No suitable FCF found: "
2802                                                "(x%x/x%x)\n",
2803                                                phba->fcoe_eventtag_at_fcf_scan,
2804                                                bf_get(lpfc_fcf_record_fcf_index,
2805                                                       new_fcf_record));
2806                                 spin_lock_irq(&phba->hbalock);
2807                                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2808                                         phba->hba_flag &= ~FCF_TS_INPROG;
2809                                         spin_unlock_irq(&phba->hbalock);
2810                                         /* Unregister in-use FCF and rescan */
2811                                         lpfc_printf_log(phba, KERN_INFO,
2812                                                         LOG_FIP,
2813                                                         "2864 On devloss tmo "
2814                                                         "unreg in-use FCF and "
2815                                                         "rescan FCF table\n");
2816                                         lpfc_unregister_fcf_rescan(phba);
2817                                         return;
2818                                 }
2819                                 /*
2820                                  * Let next new FCF event trigger fast failover
2821                                  */
2822                                 phba->hba_flag &= ~FCF_TS_INPROG;
2823                                 spin_unlock_irq(&phba->hbalock);
2824                                 return;
2825                         }
2826                         /*
2827                          * It has found a suitable FCF record that is not
2828                          * the same as in-use FCF record, unregister the
2829                          * in-use FCF record, replace the in-use FCF record
2830                          * with the new FCF record, mark FCF fast failover
2831                          * completed, and then start register the new FCF
2832                          * record.
2833                          */
2834
2835                         /* Unregister the current in-use FCF record */
2836                         lpfc_unregister_fcf(phba);
2837
2838                         /* Replace in-use record with the new record */
2839                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2840                                         "2842 Replace in-use FCF (x%x) "
2841                                         "with failover FCF (x%x)\n",
2842                                         phba->fcf.current_rec.fcf_indx,
2843                                         phba->fcf.failover_rec.fcf_indx);
2844                         memcpy(&phba->fcf.current_rec,
2845                                &phba->fcf.failover_rec,
2846                                sizeof(struct lpfc_fcf_rec));
2847                         /*
2848                          * Mark the fast FCF failover rediscovery completed
2849                          * and the start of the first round of the roundrobin
2850                          * FCF failover.
2851                          */
2852                         spin_lock_irq(&phba->hbalock);
2853                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2854                         spin_unlock_irq(&phba->hbalock);
2855                         /* Register to the new FCF record */
2856                         lpfc_register_fcf(phba);
2857                 } else {
2858                         /*
2859                          * In case of transaction period to fast FCF failover,
2860                          * do nothing when search to the end of the FCF table.
2861                          */
2862                         if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
2863                             (phba->fcf.fcf_flag & FCF_REDISC_PEND))
2864                                 return;
2865
2866                         if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2867                                 phba->fcf.fcf_flag & FCF_IN_USE) {
2868                                 /*
2869                                  * In case the current in-use FCF record no
2870                                  * longer existed during FCF discovery that
2871                                  * was not triggered by fast FCF failover
2872                                  * process, treat it as fast FCF failover.
2873                                  */
2874                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2875                                                 "2841 In-use FCF record (x%x) "
2876                                                 "not reported, entering fast "
2877                                                 "FCF failover mode scanning.\n",
2878                                                 phba->fcf.current_rec.fcf_indx);
2879                                 spin_lock_irq(&phba->hbalock);
2880                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2881                                 spin_unlock_irq(&phba->hbalock);
2882                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2883                                                 LPFC_FCOE_FCF_GET_FIRST);
2884                                 return;
2885                         }
2886                         /* Register to the new FCF record */
2887                         lpfc_register_fcf(phba);
2888                 }
2889         } else
2890                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
2891         return;
2892
2893 out:
2894         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2895         lpfc_register_fcf(phba);
2896
2897         return;
2898 }
2899
2900 /**
2901  * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler
2902  * @phba: pointer to lpfc hba data structure.
2903  * @mboxq: pointer to mailbox object.
2904  *
2905  * This is the callback function for FLOGI failure roundrobin FCF failover
2906  * read FCF record mailbox command from the eligible FCF record bmask for
2907  * performing the failover. If the FCF read back is not valid/available, it
2908  * fails through to retrying FLOGI to the currently registered FCF again.
2909  * Otherwise, if the FCF read back is valid and available, it will set the
2910  * newly read FCF record to the failover FCF record, unregister currently
2911  * registered FCF record, copy the failover FCF record to the current
2912  * FCF record, and then register the current FCF record before proceeding
2913  * to trying FLOGI on the new failover FCF.
2914  */
2915 void
2916 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2917 {
2918         struct fcf_record *new_fcf_record;
2919         uint32_t boot_flag, addr_mode;
2920         uint16_t next_fcf_index, fcf_index;
2921         uint16_t current_fcf_index;
2922         uint16_t vlan_id;
2923         int rc;
2924
2925         /* If link state is not up, stop the roundrobin failover process */
2926         if (phba->link_state < LPFC_LINK_UP) {
2927                 spin_lock_irq(&phba->hbalock);
2928                 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
2929                 phba->hba_flag &= ~FCF_RR_INPROG;
2930                 spin_unlock_irq(&phba->hbalock);
2931                 goto out;
2932         }
2933
2934         /* Parse the FCF record from the non-embedded mailbox command */
2935         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2936                                                       &next_fcf_index);
2937         if (!new_fcf_record) {
2938                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2939                                 "2766 Mailbox command READ_FCF_RECORD "
2940                                 "failed to retrieve a FCF record. "
2941                                 "hba_flg x%x fcf_flg x%x\n", phba->hba_flag,
2942                                 phba->fcf.fcf_flag);
2943                 lpfc_unregister_fcf_rescan(phba);
2944                 goto out;
2945         }
2946
2947         /* Get the needed parameters from FCF record */
2948         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2949                                       &addr_mode, &vlan_id);
2950
2951         /* Log the FCF record information if turned on */
2952         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2953                                       next_fcf_index);
2954
2955         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2956         if (!rc) {
2957                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2958                                 "2848 Remove ineligible FCF (x%x) from "
2959                                 "from roundrobin bmask\n", fcf_index);
2960                 /* Clear roundrobin bmask bit for ineligible FCF */
2961                 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index);
2962                 /* Perform next round of roundrobin FCF failover */
2963                 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
2964                 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index);
2965                 if (rc)
2966                         goto out;
2967                 goto error_out;
2968         }
2969
2970         if (fcf_index == phba->fcf.current_rec.fcf_indx) {
2971                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2972                                 "2760 Perform FLOGI roundrobin FCF failover: "
2973                                 "FCF (x%x) back to FCF (x%x)\n",
2974                                 phba->fcf.current_rec.fcf_indx, fcf_index);
2975                 /* Wait 500 ms before retrying FLOGI to current FCF */
2976                 msleep(500);
2977                 lpfc_issue_init_vfi(phba->pport);
2978                 goto out;
2979         }
2980
2981         /* Upload new FCF record to the failover FCF record */
2982         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2983                         "2834 Update current FCF (x%x) with new FCF (x%x)\n",
2984                         phba->fcf.failover_rec.fcf_indx, fcf_index);
2985         spin_lock_irq(&phba->hbalock);
2986         __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
2987                                  new_fcf_record, addr_mode, vlan_id,
2988                                  (boot_flag ? BOOT_ENABLE : 0));
2989         spin_unlock_irq(&phba->hbalock);
2990
2991         current_fcf_index = phba->fcf.current_rec.fcf_indx;
2992
2993         /* Unregister the current in-use FCF record */
2994         lpfc_unregister_fcf(phba);
2995
2996         /* Replace in-use record with the new record */
2997         memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
2998                sizeof(struct lpfc_fcf_rec));
2999
3000         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3001                         "2783 Perform FLOGI roundrobin FCF failover: FCF "
3002                         "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index);
3003
3004 error_out:
3005         lpfc_register_fcf(phba);
3006 out:
3007         lpfc_sli4_mbox_cmd_free(phba, mboxq);
3008 }
3009
3010 /**
3011  * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
3012  * @phba: pointer to lpfc hba data structure.
3013  * @mboxq: pointer to mailbox object.
3014  *
3015  * This is the callback function of read FCF record mailbox command for
3016  * updating the eligible FCF bmask for FLOGI failure roundrobin FCF
3017  * failover when a new FCF event happened. If the FCF read back is
3018  * valid/available and it passes the connection list check, it updates
3019  * the bmask for the eligible FCF record for roundrobin failover.
3020  */
3021 void
3022 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3023 {
3024         struct fcf_record *new_fcf_record;
3025         uint32_t boot_flag, addr_mode;
3026         uint16_t fcf_index, next_fcf_index;
3027         uint16_t vlan_id;
3028         int rc;
3029
3030         /* If link state is not up, no need to proceed */
3031         if (phba->link_state < LPFC_LINK_UP)
3032                 goto out;
3033
3034         /* If FCF discovery period is over, no need to proceed */
3035         if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
3036                 goto out;
3037
3038         /* Parse the FCF record from the non-embedded mailbox command */
3039         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
3040                                                       &next_fcf_index);
3041         if (!new_fcf_record) {
3042                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3043                                 "2767 Mailbox command READ_FCF_RECORD "
3044                                 "failed to retrieve a FCF record.\n");
3045                 goto out;
3046         }
3047
3048         /* Check the connection list for eligibility */
3049         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
3050                                       &addr_mode, &vlan_id);
3051
3052         /* Log the FCF record information if turned on */
3053         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
3054                                       next_fcf_index);
3055
3056         if (!rc)
3057                 goto out;
3058
3059         /* Update the eligible FCF record index bmask */
3060         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
3061
3062         rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record);
3063
3064 out:
3065         lpfc_sli4_mbox_cmd_free(phba, mboxq);
3066 }
3067
3068 /**
3069  * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command.
3070  * @phba: pointer to lpfc hba data structure.
3071  * @mboxq: pointer to mailbox data structure.
3072  *
3073  * This function handles completion of init vfi mailbox command.
3074  */
3075 static void
3076 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3077 {
3078         struct lpfc_vport *vport = mboxq->vport;
3079
3080         /*
3081          * VFI not supported on interface type 0, just do the flogi
3082          * Also continue if the VFI is in use - just use the same one.
3083          */
3084         if (mboxq->u.mb.mbxStatus &&
3085             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
3086                         LPFC_SLI_INTF_IF_TYPE_0) &&
3087             mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
3088                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3089                                  "2891 Init VFI mailbox failed 0x%x\n",
3090                                  mboxq->u.mb.mbxStatus);
3091                 mempool_free(mboxq, phba->mbox_mem_pool);
3092                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3093                 return;
3094         }
3095
3096         lpfc_initial_flogi(vport);
3097         mempool_free(mboxq, phba->mbox_mem_pool);
3098         return;
3099 }
3100
3101 /**
3102  * lpfc_issue_init_vfi - Issue init_vfi mailbox command.
3103  * @vport: pointer to lpfc_vport data structure.
3104  *
3105  * This function issue a init_vfi mailbox command to initialize the VFI and
3106  * VPI for the physical port.
3107  */
3108 void
3109 lpfc_issue_init_vfi(struct lpfc_vport *vport)
3110 {
3111         LPFC_MBOXQ_t *mboxq;
3112         int rc;
3113         struct lpfc_hba *phba = vport->phba;
3114
3115         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3116         if (!mboxq) {
3117                 lpfc_printf_vlog(vport, KERN_ERR,
3118                         LOG_TRACE_EVENT, "2892 Failed to allocate "
3119                         "init_vfi mailbox\n");
3120                 return;
3121         }
3122         lpfc_init_vfi(mboxq, vport);
3123         mboxq->mbox_cmpl = lpfc_init_vfi_cmpl;
3124         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
3125         if (rc == MBX_NOT_FINISHED) {
3126                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3127                                  "2893 Failed to issue init_vfi mailbox\n");
3128                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
3129         }
3130 }
3131
3132 /**
3133  * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
3134  * @phba: pointer to lpfc hba data structure.
3135  * @mboxq: pointer to mailbox data structure.
3136  *
3137  * This function handles completion of init vpi mailbox command.
3138  */
3139 void
3140 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3141 {
3142         struct lpfc_vport *vport = mboxq->vport;
3143         struct lpfc_nodelist *ndlp;
3144         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3145
3146         if (mboxq->u.mb.mbxStatus) {
3147                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3148                                  "2609 Init VPI mailbox failed 0x%x\n",
3149                                  mboxq->u.mb.mbxStatus);
3150                 mempool_free(mboxq, phba->mbox_mem_pool);
3151                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3152                 return;
3153         }
3154         spin_lock_irq(shost->host_lock);
3155         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
3156         spin_unlock_irq(shost->host_lock);
3157
3158         /* If this port is physical port or FDISC is done, do reg_vpi */
3159         if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
3160                         ndlp = lpfc_findnode_did(vport, Fabric_DID);
3161                         if (!ndlp)
3162                                 lpfc_printf_vlog(vport, KERN_ERR,
3163                                         LOG_TRACE_EVENT,
3164                                         "2731 Cannot find fabric "
3165                                         "controller node\n");
3166                         else
3167                                 lpfc_register_new_vport(phba, vport, ndlp);
3168                         mempool_free(mboxq, phba->mbox_mem_pool);
3169                         return;
3170         }
3171
3172         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
3173                 lpfc_initial_fdisc(vport);
3174         else {
3175                 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
3176                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3177                                  "2606 No NPIV Fabric support\n");
3178         }
3179         mempool_free(mboxq, phba->mbox_mem_pool);
3180         return;
3181 }
3182
3183 /**
3184  * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
3185  * @vport: pointer to lpfc_vport data structure.
3186  *
3187  * This function issue a init_vpi mailbox command to initialize
3188  * VPI for the vport.
3189  */
3190 void
3191 lpfc_issue_init_vpi(struct lpfc_vport *vport)
3192 {
3193         LPFC_MBOXQ_t *mboxq;
3194         int rc, vpi;
3195
3196         if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) {
3197                 vpi = lpfc_alloc_vpi(vport->phba);
3198                 if (!vpi) {
3199                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3200                                          "3303 Failed to obtain vport vpi\n");
3201                         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3202                         return;
3203                 }
3204                 vport->vpi = vpi;
3205         }
3206
3207         mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
3208         if (!mboxq) {
3209                 lpfc_printf_vlog(vport, KERN_ERR,
3210                         LOG_TRACE_EVENT, "2607 Failed to allocate "
3211                         "init_vpi mailbox\n");
3212                 return;
3213         }
3214         lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
3215         mboxq->vport = vport;
3216         mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
3217         rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
3218         if (rc == MBX_NOT_FINISHED) {
3219                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3220                                  "2608 Failed to issue init_vpi mailbox\n");
3221                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
3222         }
3223 }
3224
3225 /**
3226  * lpfc_start_fdiscs - send fdiscs for each vports on this port.
3227  * @phba: pointer to lpfc hba data structure.
3228  *
3229  * This function loops through the list of vports on the @phba and issues an
3230  * FDISC if possible.
3231  */
3232 void
3233 lpfc_start_fdiscs(struct lpfc_hba *phba)
3234 {
3235         struct lpfc_vport **vports;
3236         int i;
3237
3238         vports = lpfc_create_vport_work_array(phba);
3239         if (vports != NULL) {
3240                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3241                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
3242                                 continue;
3243                         /* There are no vpi for this vport */
3244                         if (vports[i]->vpi > phba->max_vpi) {
3245                                 lpfc_vport_set_state(vports[i],
3246                                                      FC_VPORT_FAILED);
3247                                 continue;
3248                         }
3249                         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3250                                 lpfc_vport_set_state(vports[i],
3251                                                      FC_VPORT_LINKDOWN);
3252                                 continue;
3253                         }
3254                         if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
3255                                 lpfc_issue_init_vpi(vports[i]);
3256                                 continue;
3257                         }
3258                         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
3259                                 lpfc_initial_fdisc(vports[i]);
3260                         else {
3261                                 lpfc_vport_set_state(vports[i],
3262                                                      FC_VPORT_NO_FABRIC_SUPP);
3263                                 lpfc_printf_vlog(vports[i], KERN_ERR,
3264                                                  LOG_TRACE_EVENT,
3265                                                  "0259 No NPIV "
3266                                                  "Fabric support\n");
3267                         }
3268                 }
3269         }
3270         lpfc_destroy_vport_work_array(phba, vports);
3271 }
3272
3273 void
3274 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3275 {
3276         struct lpfc_dmabuf *dmabuf = mboxq->ctx_buf;
3277         struct lpfc_vport *vport = mboxq->vport;
3278         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3279
3280         /*
3281          * VFI not supported for interface type 0, so ignore any mailbox
3282          * error (except VFI in use) and continue with the discovery.
3283          */
3284         if (mboxq->u.mb.mbxStatus &&
3285             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
3286                         LPFC_SLI_INTF_IF_TYPE_0) &&
3287             mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
3288                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3289                                  "2018 REG_VFI mbxStatus error x%x "
3290                                  "HBA state x%x\n",
3291                                  mboxq->u.mb.mbxStatus, vport->port_state);
3292                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3293                         /* FLOGI failed, use loop map to make discovery list */
3294                         lpfc_disc_list_loopmap(vport);
3295                         /* Start discovery */
3296                         lpfc_disc_start(vport);
3297                         goto out_free_mem;
3298                 }
3299                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3300                 goto out_free_mem;
3301         }
3302
3303         /* If the VFI is already registered, there is nothing else to do
3304          * Unless this was a VFI update and we are in PT2PT mode, then
3305          * we should drop through to set the port state to ready.
3306          */
3307         if (vport->fc_flag & FC_VFI_REGISTERED)
3308                 if (!(phba->sli_rev == LPFC_SLI_REV4 &&
3309                       vport->fc_flag & FC_PT2PT))
3310                         goto out_free_mem;
3311
3312         /* The VPI is implicitly registered when the VFI is registered */
3313         spin_lock_irq(shost->host_lock);
3314         vport->vpi_state |= LPFC_VPI_REGISTERED;
3315         vport->fc_flag |= FC_VFI_REGISTERED;
3316         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3317         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
3318         spin_unlock_irq(shost->host_lock);
3319
3320         /* In case SLI4 FC loopback test, we are ready */
3321         if ((phba->sli_rev == LPFC_SLI_REV4) &&
3322             (phba->link_flag & LS_LOOPBACK_MODE)) {
3323                 phba->link_state = LPFC_HBA_READY;
3324                 goto out_free_mem;
3325         }
3326
3327         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3328                          "3313 cmpl reg vfi  port_state:%x fc_flag:%x myDid:%x "
3329                          "alpacnt:%d LinkState:%x topology:%x\n",
3330                          vport->port_state, vport->fc_flag, vport->fc_myDID,
3331                          vport->phba->alpa_map[0],
3332                          phba->link_state, phba->fc_topology);
3333
3334         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3335                 /*
3336                  * For private loop or for NPort pt2pt,
3337                  * just start discovery and we are done.
3338                  */
3339                 if ((vport->fc_flag & FC_PT2PT) ||
3340                     ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) &&
3341                     !(vport->fc_flag & FC_PUBLIC_LOOP))) {
3342
3343                         /* Use loop map to make discovery list */
3344                         lpfc_disc_list_loopmap(vport);
3345                         /* Start discovery */
3346                         if (vport->fc_flag & FC_PT2PT)
3347                                 vport->port_state = LPFC_VPORT_READY;
3348                         else
3349                                 lpfc_disc_start(vport);
3350                 } else {
3351                         lpfc_start_fdiscs(phba);
3352                         lpfc_do_scr_ns_plogi(phba, vport);
3353                 }
3354         }
3355
3356 out_free_mem:
3357         mempool_free(mboxq, phba->mbox_mem_pool);
3358         if (dmabuf) {
3359                 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
3360                 kfree(dmabuf);
3361         }
3362         return;
3363 }
3364
3365 static void
3366 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3367 {
3368         MAILBOX_t *mb = &pmb->u.mb;
3369         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3370         struct lpfc_vport  *vport = pmb->vport;
3371         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3372         struct serv_parm *sp = &vport->fc_sparam;
3373         uint32_t ed_tov;
3374
3375         /* Check for error */
3376         if (mb->mbxStatus) {
3377                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
3378                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3379                                  "0319 READ_SPARAM mbxStatus error x%x "
3380                                  "hba state x%x>\n",
3381                                  mb->mbxStatus, vport->port_state);
3382                 lpfc_linkdown(phba);
3383                 goto out;
3384         }
3385
3386         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
3387                sizeof (struct serv_parm));
3388
3389         ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
3390         if (sp->cmn.edtovResolution)    /* E_D_TOV ticks are in nanoseconds */
3391                 ed_tov = (ed_tov + 999999) / 1000000;
3392
3393         phba->fc_edtov = ed_tov;
3394         phba->fc_ratov = (2 * ed_tov) / 1000;
3395         if (phba->fc_ratov < FF_DEF_RATOV) {
3396                 /* RA_TOV should be atleast 10sec for initial flogi */
3397                 phba->fc_ratov = FF_DEF_RATOV;
3398         }
3399
3400         lpfc_update_vport_wwn(vport);
3401         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
3402         if (vport->port_type == LPFC_PHYSICAL_PORT) {
3403                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
3404                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
3405         }
3406
3407         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3408         kfree(mp);
3409         mempool_free(pmb, phba->mbox_mem_pool);
3410
3411         /* Check if sending the FLOGI is being deferred to after we get
3412          * up to date CSPs from MBX_READ_SPARAM.
3413          */
3414         if (phba->hba_flag & HBA_DEFER_FLOGI) {
3415                 lpfc_initial_flogi(vport);
3416                 phba->hba_flag &= ~HBA_DEFER_FLOGI;
3417         }
3418         return;
3419
3420 out:
3421         pmb->ctx_buf = NULL;
3422         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3423         kfree(mp);
3424         lpfc_issue_clear_la(phba, vport);
3425         mempool_free(pmb, phba->mbox_mem_pool);
3426         return;
3427 }
3428
3429 static void
3430 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
3431 {
3432         struct lpfc_vport *vport = phba->pport;
3433         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
3434         struct Scsi_Host *shost;
3435         int i;
3436         struct lpfc_dmabuf *mp;
3437         int rc;
3438         struct fcf_record *fcf_record;
3439         uint32_t fc_flags = 0;
3440         unsigned long iflags;
3441
3442         spin_lock_irqsave(&phba->hbalock, iflags);
3443         phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la);
3444
3445         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3446                 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) {
3447                 case LPFC_LINK_SPEED_1GHZ:
3448                 case LPFC_LINK_SPEED_2GHZ:
3449                 case LPFC_LINK_SPEED_4GHZ:
3450                 case LPFC_LINK_SPEED_8GHZ:
3451                 case LPFC_LINK_SPEED_10GHZ:
3452                 case LPFC_LINK_SPEED_16GHZ:
3453                 case LPFC_LINK_SPEED_32GHZ:
3454                 case LPFC_LINK_SPEED_64GHZ:
3455                 case LPFC_LINK_SPEED_128GHZ:
3456                 case LPFC_LINK_SPEED_256GHZ:
3457                         break;
3458                 default:
3459                         phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN;
3460                         break;
3461                 }
3462         }
3463
3464         if (phba->fc_topology &&
3465             phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) {
3466                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
3467                                 "3314 Toplogy changed was 0x%x is 0x%x\n",
3468                                 phba->fc_topology,
3469                                 bf_get(lpfc_mbx_read_top_topology, la));
3470                 phba->fc_topology_changed = 1;
3471         }
3472
3473         phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la);
3474         phba->link_flag &= ~(LS_NPIV_FAB_SUPPORTED | LS_CT_VEN_RPA);
3475
3476         shost = lpfc_shost_from_vport(vport);
3477         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3478                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
3479
3480                 /* if npiv is enabled and this adapter supports npiv log
3481                  * a message that npiv is not supported in this topology
3482                  */
3483                 if (phba->cfg_enable_npiv && phba->max_vpi)
3484                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3485                                 "1309 Link Up Event npiv not supported in loop "
3486                                 "topology\n");
3487                                 /* Get Loop Map information */
3488                 if (bf_get(lpfc_mbx_read_top_il, la))
3489                         fc_flags |= FC_LBIT;
3490
3491                 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la);
3492                 i = la->lilpBde64.tus.f.bdeSize;
3493
3494                 if (i == 0) {
3495                         phba->alpa_map[0] = 0;
3496                 } else {
3497                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
3498                                 int numalpa, j, k;
3499                                 union {
3500                                         uint8_t pamap[16];
3501                                         struct {
3502                                                 uint32_t wd1;
3503                                                 uint32_t wd2;
3504                                                 uint32_t wd3;
3505                                                 uint32_t wd4;
3506                                         } pa;
3507                                 } un;
3508                                 numalpa = phba->alpa_map[0];
3509                                 j = 0;
3510                                 while (j < numalpa) {
3511                                         memset(un.pamap, 0, 16);
3512                                         for (k = 1; j < numalpa; k++) {
3513                                                 un.pamap[k - 1] =
3514                                                         phba->alpa_map[j + 1];
3515                                                 j++;
3516                                                 if (k == 16)
3517                                                         break;
3518                                         }
3519                                         /* Link Up Event ALPA map */
3520                                         lpfc_printf_log(phba,
3521                                                         KERN_WARNING,
3522                                                         LOG_LINK_EVENT,
3523                                                         "1304 Link Up Event "
3524                                                         "ALPA map Data: x%x "
3525                                                         "x%x x%x x%x\n",
3526                                                         un.pa.wd1, un.pa.wd2,
3527                                                         un.pa.wd3, un.pa.wd4);
3528                                 }
3529                         }
3530                 }
3531         } else {
3532                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
3533                         if (phba->max_vpi && phba->cfg_enable_npiv &&
3534                            (phba->sli_rev >= LPFC_SLI_REV3))
3535                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
3536                 }
3537                 vport->fc_myDID = phba->fc_pref_DID;
3538                 fc_flags |= FC_LBIT;
3539         }
3540         spin_unlock_irqrestore(&phba->hbalock, iflags);
3541
3542         if (fc_flags) {
3543                 spin_lock_irqsave(shost->host_lock, iflags);
3544                 vport->fc_flag |= fc_flags;
3545                 spin_unlock_irqrestore(shost->host_lock, iflags);
3546         }
3547
3548         lpfc_linkup(phba);
3549         sparam_mbox = NULL;
3550
3551         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3552         if (!sparam_mbox)
3553                 goto out;
3554
3555         rc = lpfc_read_sparam(phba, sparam_mbox, 0);
3556         if (rc) {
3557                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3558                 goto out;
3559         }
3560         sparam_mbox->vport = vport;
3561         sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
3562         rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
3563         if (rc == MBX_NOT_FINISHED) {
3564                 mp = (struct lpfc_dmabuf *)sparam_mbox->ctx_buf;
3565                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3566                 kfree(mp);
3567                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3568                 goto out;
3569         }
3570
3571         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3572                 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3573                 if (!cfglink_mbox)
3574                         goto out;
3575                 vport->port_state = LPFC_LOCAL_CFG_LINK;
3576                 lpfc_config_link(phba, cfglink_mbox);
3577                 cfglink_mbox->vport = vport;
3578                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
3579                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
3580                 if (rc == MBX_NOT_FINISHED) {
3581                         mempool_free(cfglink_mbox, phba->mbox_mem_pool);
3582                         goto out;
3583                 }
3584         } else {
3585                 vport->port_state = LPFC_VPORT_UNKNOWN;
3586                 /*
3587                  * Add the driver's default FCF record at FCF index 0 now. This
3588                  * is phase 1 implementation that support FCF index 0 and driver
3589                  * defaults.
3590                  */
3591                 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
3592                         fcf_record = kzalloc(sizeof(struct fcf_record),
3593                                         GFP_KERNEL);
3594                         if (unlikely(!fcf_record)) {
3595                                 lpfc_printf_log(phba, KERN_ERR,
3596                                         LOG_TRACE_EVENT,
3597                                         "2554 Could not allocate memory for "
3598                                         "fcf record\n");
3599                                 rc = -ENODEV;
3600                                 goto out;
3601                         }
3602
3603                         lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
3604                                                 LPFC_FCOE_FCF_DEF_INDEX);
3605                         rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
3606                         if (unlikely(rc)) {
3607                                 lpfc_printf_log(phba, KERN_ERR,
3608                                         LOG_TRACE_EVENT,
3609                                         "2013 Could not manually add FCF "
3610                                         "record 0, status %d\n", rc);
3611                                 rc = -ENODEV;
3612                                 kfree(fcf_record);
3613                                 goto out;
3614                         }
3615                         kfree(fcf_record);
3616                 }
3617                 /*
3618                  * The driver is expected to do FIP/FCF. Call the port
3619                  * and get the FCF Table.
3620                  */
3621                 spin_lock_irqsave(&phba->hbalock, iflags);
3622                 if (phba->hba_flag & FCF_TS_INPROG) {
3623                         spin_unlock_irqrestore(&phba->hbalock, iflags);
3624                         return;
3625                 }
3626                 /* This is the initial FCF discovery scan */
3627                 phba->fcf.fcf_flag |= FCF_INIT_DISC;
3628                 spin_unlock_irqrestore(&phba->hbalock, iflags);
3629                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3630                                 "2778 Start FCF table scan at linkup\n");
3631                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
3632                                                      LPFC_FCOE_FCF_GET_FIRST);
3633                 if (rc) {
3634                         spin_lock_irqsave(&phba->hbalock, iflags);
3635                         phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
3636                         spin_unlock_irqrestore(&phba->hbalock, iflags);
3637                         goto out;
3638                 }
3639                 /* Reset FCF roundrobin bmask for new discovery */
3640                 lpfc_sli4_clear_fcf_rr_bmask(phba);
3641         }
3642
3643         /* Prepare for LINK up registrations */
3644         memset(phba->os_host_name, 0, sizeof(phba->os_host_name));
3645         scnprintf(phba->os_host_name, sizeof(phba->os_host_name), "%s",
3646                   init_utsname()->nodename);
3647         return;
3648 out:
3649         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3650         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3651                          "0263 Discovery Mailbox error: state: 0x%x : x%px x%px\n",
3652                          vport->port_state, sparam_mbox, cfglink_mbox);
3653         lpfc_issue_clear_la(phba, vport);
3654         return;
3655 }
3656
3657 static void
3658 lpfc_enable_la(struct lpfc_hba *phba)
3659 {
3660         uint32_t control;
3661         struct lpfc_sli *psli = &phba->sli;
3662         spin_lock_irq(&phba->hbalock);
3663         psli->sli_flag |= LPFC_PROCESS_LA;
3664         if (phba->sli_rev <= LPFC_SLI_REV3) {
3665                 control = readl(phba->HCregaddr);
3666                 control |= HC_LAINT_ENA;
3667                 writel(control, phba->HCregaddr);
3668                 readl(phba->HCregaddr); /* flush */
3669         }
3670         spin_unlock_irq(&phba->hbalock);
3671 }
3672
3673 static void
3674 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
3675 {
3676         lpfc_linkdown(phba);
3677         lpfc_enable_la(phba);
3678         lpfc_unregister_unused_fcf(phba);
3679         /* turn on Link Attention interrupts - no CLEAR_LA needed */
3680 }
3681
3682
3683 /*
3684  * This routine handles processing a READ_TOPOLOGY mailbox
3685  * command upon completion. It is setup in the LPFC_MBOXQ
3686  * as the completion routine when the command is
3687  * handed off to the SLI layer. SLI4 only.
3688  */
3689 void
3690 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3691 {
3692         struct lpfc_vport *vport = pmb->vport;
3693         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3694         struct lpfc_mbx_read_top *la;
3695         struct lpfc_sli_ring *pring;
3696         MAILBOX_t *mb = &pmb->u.mb;
3697         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
3698         uint8_t attn_type;
3699         unsigned long iflags;
3700
3701         /* Unblock ELS traffic */
3702         pring = lpfc_phba_elsring(phba);
3703         if (pring)
3704                 pring->flag &= ~LPFC_STOP_IOCB_EVENT;
3705
3706         /* Check for error */
3707         if (mb->mbxStatus) {
3708                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3709                                 "1307 READ_LA mbox error x%x state x%x\n",
3710                                 mb->mbxStatus, vport->port_state);
3711                 lpfc_mbx_issue_link_down(phba);
3712                 phba->link_state = LPFC_HBA_ERROR;
3713                 goto lpfc_mbx_cmpl_read_topology_free_mbuf;
3714         }
3715
3716         la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
3717         attn_type = bf_get(lpfc_mbx_read_top_att_type, la);
3718
3719         memcpy(&phba->alpa_map[0], mp->virt, 128);
3720
3721         spin_lock_irqsave(shost->host_lock, iflags);
3722         if (bf_get(lpfc_mbx_read_top_pb, la))
3723                 vport->fc_flag |= FC_BYPASSED_MODE;
3724         else
3725                 vport->fc_flag &= ~FC_BYPASSED_MODE;
3726         spin_unlock_irqrestore(shost->host_lock, iflags);
3727
3728         if (phba->fc_eventTag <= la->eventTag) {
3729                 phba->fc_stat.LinkMultiEvent++;
3730                 if (attn_type == LPFC_ATT_LINK_UP)
3731                         if (phba->fc_eventTag != 0)
3732                                 lpfc_linkdown(phba);
3733         }
3734
3735         phba->fc_eventTag = la->eventTag;
3736         if (phba->sli_rev < LPFC_SLI_REV4) {
3737                 spin_lock_irqsave(&phba->hbalock, iflags);
3738                 if (bf_get(lpfc_mbx_read_top_mm, la))
3739                         phba->sli.sli_flag |= LPFC_MENLO_MAINT;
3740                 else
3741                         phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
3742                 spin_unlock_irqrestore(&phba->hbalock, iflags);
3743         }
3744
3745         phba->link_events++;
3746         if ((attn_type == LPFC_ATT_LINK_UP) &&
3747             !(phba->sli.sli_flag & LPFC_MENLO_MAINT)) {
3748                 phba->fc_stat.LinkUp++;
3749                 if (phba->link_flag & LS_LOOPBACK_MODE) {
3750                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3751                                         "1306 Link Up Event in loop back mode "
3752                                         "x%x received Data: x%x x%x x%x x%x\n",
3753                                         la->eventTag, phba->fc_eventTag,
3754                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3755                                                la),
3756                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3757                                         phba->alpa_map[0]);
3758                 } else {
3759                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3760                                         "1303 Link Up Event x%x received "
3761                                         "Data: x%x x%x x%x x%x x%x x%x %d\n",
3762                                         la->eventTag, phba->fc_eventTag,
3763                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3764                                                la),
3765                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3766                                         phba->alpa_map[0],
3767                                         bf_get(lpfc_mbx_read_top_mm, la),
3768                                         bf_get(lpfc_mbx_read_top_fa, la),
3769                                         phba->wait_4_mlo_maint_flg);
3770                 }
3771                 lpfc_mbx_process_link_up(phba, la);
3772
3773                 if (phba->cmf_active_mode != LPFC_CFG_OFF)
3774                         lpfc_cmf_signal_init(phba);
3775
3776         } else if (attn_type == LPFC_ATT_LINK_DOWN ||
3777                    attn_type == LPFC_ATT_UNEXP_WWPN) {
3778                 phba->fc_stat.LinkDown++;
3779                 if (phba->link_flag & LS_LOOPBACK_MODE)
3780                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3781                                 "1308 Link Down Event in loop back mode "
3782                                 "x%x received "
3783                                 "Data: x%x x%x x%x\n",
3784                                 la->eventTag, phba->fc_eventTag,
3785                                 phba->pport->port_state, vport->fc_flag);
3786                 else if (attn_type == LPFC_ATT_UNEXP_WWPN)
3787                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3788                                 "1313 Link Down Unexpected FA WWPN Event x%x "
3789                                 "received Data: x%x x%x x%x x%x x%x\n",
3790                                 la->eventTag, phba->fc_eventTag,
3791                                 phba->pport->port_state, vport->fc_flag,
3792                                 bf_get(lpfc_mbx_read_top_mm, la),
3793                                 bf_get(lpfc_mbx_read_top_fa, la));
3794                 else
3795                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3796                                 "1305 Link Down Event x%x received "
3797                                 "Data: x%x x%x x%x x%x x%x\n",
3798                                 la->eventTag, phba->fc_eventTag,
3799                                 phba->pport->port_state, vport->fc_flag,
3800                                 bf_get(lpfc_mbx_read_top_mm, la),
3801                                 bf_get(lpfc_mbx_read_top_fa, la));
3802                 lpfc_mbx_issue_link_down(phba);
3803         }
3804         if (phba->sli.sli_flag & LPFC_MENLO_MAINT &&
3805             attn_type == LPFC_ATT_LINK_UP) {
3806                 if (phba->link_state != LPFC_LINK_DOWN) {
3807                         phba->fc_stat.LinkDown++;
3808                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3809                                 "1312 Link Down Event x%x received "
3810                                 "Data: x%x x%x x%x\n",
3811                                 la->eventTag, phba->fc_eventTag,
3812                                 phba->pport->port_state, vport->fc_flag);
3813                         lpfc_mbx_issue_link_down(phba);
3814                 } else
3815                         lpfc_enable_la(phba);
3816
3817                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3818                                 "1310 Menlo Maint Mode Link up Event x%x rcvd "
3819                                 "Data: x%x x%x x%x\n",
3820                                 la->eventTag, phba->fc_eventTag,
3821                                 phba->pport->port_state, vport->fc_flag);
3822                 /*
3823                  * The cmnd that triggered this will be waiting for this
3824                  * signal.
3825                  */
3826                 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
3827                 if (phba->wait_4_mlo_maint_flg) {
3828                         phba->wait_4_mlo_maint_flg = 0;
3829                         wake_up_interruptible(&phba->wait_4_mlo_m_q);
3830                 }
3831         }
3832
3833         if ((phba->sli_rev < LPFC_SLI_REV4) &&
3834             bf_get(lpfc_mbx_read_top_fa, la)) {
3835                 if (phba->sli.sli_flag & LPFC_MENLO_MAINT)
3836                         lpfc_issue_clear_la(phba, vport);
3837                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3838                                 "1311 fa %d\n",
3839                                 bf_get(lpfc_mbx_read_top_fa, la));
3840         }
3841
3842 lpfc_mbx_cmpl_read_topology_free_mbuf:
3843         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3844         kfree(mp);
3845         mempool_free(pmb, phba->mbox_mem_pool);
3846         return;
3847 }
3848
3849 /*
3850  * This routine handles processing a REG_LOGIN mailbox
3851  * command upon completion. It is setup in the LPFC_MBOXQ
3852  * as the completion routine when the command is
3853  * handed off to the SLI layer.
3854  */
3855 void
3856 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3857 {
3858         struct lpfc_vport  *vport = pmb->vport;
3859         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
3860         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
3861
3862         pmb->ctx_buf = NULL;
3863         pmb->ctx_ndlp = NULL;
3864
3865         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI | LOG_NODE | LOG_DISCOVERY,
3866                          "0002 rpi:%x DID:%x flg:%x %d x%px\n",
3867                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
3868                          kref_read(&ndlp->kref),
3869                          ndlp);
3870         if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
3871                 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
3872
3873         if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL ||
3874             ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
3875                 /* We rcvd a rscn after issuing this
3876                  * mbox reg login, we may have cycled
3877                  * back through the state and be
3878                  * back at reg login state so this
3879                  * mbox needs to be ignored becase
3880                  * there is another reg login in
3881                  * process.
3882                  */
3883                 spin_lock_irq(&ndlp->lock);
3884                 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
3885                 spin_unlock_irq(&ndlp->lock);
3886
3887                 /*
3888                  * We cannot leave the RPI registered because
3889                  * if we go thru discovery again for this ndlp
3890                  * a subsequent REG_RPI will fail.
3891                  */
3892                 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3893                 lpfc_unreg_rpi(vport, ndlp);
3894         }
3895
3896         /* Call state machine */
3897         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
3898
3899         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3900         kfree(mp);
3901         mempool_free(pmb, phba->mbox_mem_pool);
3902         /* decrement the node reference count held for this callback
3903          * function.
3904          */
3905         lpfc_nlp_put(ndlp);
3906
3907         return;
3908 }
3909
3910 static void
3911 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3912 {
3913         MAILBOX_t *mb = &pmb->u.mb;
3914         struct lpfc_vport *vport = pmb->vport;
3915         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3916
3917         switch (mb->mbxStatus) {
3918         case 0x0011:
3919         case 0x0020:
3920                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3921                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
3922                                  mb->mbxStatus);
3923                 break;
3924         /* If VPI is busy, reset the HBA */
3925         case 0x9700:
3926                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3927                         "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n",
3928                         vport->vpi, mb->mbxStatus);
3929                 if (!(phba->pport->load_flag & FC_UNLOADING))
3930                         lpfc_workq_post_event(phba, NULL, NULL,
3931                                 LPFC_EVT_RESET_HBA);
3932         }
3933         spin_lock_irq(shost->host_lock);
3934         vport->vpi_state &= ~LPFC_VPI_REGISTERED;
3935         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3936         spin_unlock_irq(shost->host_lock);
3937         mempool_free(pmb, phba->mbox_mem_pool);
3938         lpfc_cleanup_vports_rrqs(vport, NULL);
3939         /*
3940          * This shost reference might have been taken at the beginning of
3941          * lpfc_vport_delete()
3942          */
3943         if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
3944                 scsi_host_put(shost);
3945 }
3946
3947 int
3948 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
3949 {
3950         struct lpfc_hba  *phba = vport->phba;
3951         LPFC_MBOXQ_t *mbox;
3952         int rc;
3953
3954         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3955         if (!mbox)
3956                 return 1;
3957
3958         lpfc_unreg_vpi(phba, vport->vpi, mbox);
3959         mbox->vport = vport;
3960         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
3961         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3962         if (rc == MBX_NOT_FINISHED) {
3963                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3964                                  "1800 Could not issue unreg_vpi\n");
3965                 mempool_free(mbox, phba->mbox_mem_pool);
3966                 return rc;
3967         }
3968         return 0;
3969 }
3970
3971 static void
3972 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3973 {
3974         struct lpfc_vport *vport = pmb->vport;
3975         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3976         MAILBOX_t *mb = &pmb->u.mb;
3977
3978         switch (mb->mbxStatus) {
3979         case 0x0011:
3980         case 0x9601:
3981         case 0x9602:
3982                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3983                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
3984                                  mb->mbxStatus);
3985                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3986                 spin_lock_irq(shost->host_lock);
3987                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
3988                 spin_unlock_irq(shost->host_lock);
3989                 vport->fc_myDID = 0;
3990
3991                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
3992                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
3993                         if (phba->nvmet_support)
3994                                 lpfc_nvmet_update_targetport(phba);
3995                         else
3996                                 lpfc_nvme_update_localport(vport);
3997                 }
3998                 goto out;
3999         }
4000
4001         spin_lock_irq(shost->host_lock);
4002         vport->vpi_state |= LPFC_VPI_REGISTERED;
4003         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
4004         spin_unlock_irq(shost->host_lock);
4005         vport->num_disc_nodes = 0;
4006         /* go thru NPR list and issue ELS PLOGIs */
4007         if (vport->fc_npr_cnt)
4008                 lpfc_els_disc_plogi(vport);
4009
4010         if (!vport->num_disc_nodes) {
4011                 spin_lock_irq(shost->host_lock);
4012                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
4013                 spin_unlock_irq(shost->host_lock);
4014                 lpfc_can_disctmo(vport);
4015         }
4016         vport->port_state = LPFC_VPORT_READY;
4017
4018 out:
4019         mempool_free(pmb, phba->mbox_mem_pool);
4020         return;
4021 }
4022
4023 /**
4024  * lpfc_create_static_vport - Read HBA config region to create static vports.
4025  * @phba: pointer to lpfc hba data structure.
4026  *
4027  * This routine issue a DUMP mailbox command for config region 22 to get
4028  * the list of static vports to be created. The function create vports
4029  * based on the information returned from the HBA.
4030  **/
4031 void
4032 lpfc_create_static_vport(struct lpfc_hba *phba)
4033 {
4034         LPFC_MBOXQ_t *pmb = NULL;
4035         MAILBOX_t *mb;
4036         struct static_vport_info *vport_info;
4037         int mbx_wait_rc = 0, i;
4038         struct fc_vport_identifiers vport_id;
4039         struct fc_vport *new_fc_vport;
4040         struct Scsi_Host *shost;
4041         struct lpfc_vport *vport;
4042         uint16_t offset = 0;
4043         uint8_t *vport_buff;
4044         struct lpfc_dmabuf *mp;
4045         uint32_t byte_count = 0;
4046
4047         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4048         if (!pmb) {
4049                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4050                                 "0542 lpfc_create_static_vport failed to"
4051                                 " allocate mailbox memory\n");
4052                 return;
4053         }
4054         memset(pmb, 0, sizeof(LPFC_MBOXQ_t));
4055         mb = &pmb->u.mb;
4056
4057         vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
4058         if (!vport_info) {
4059                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4060                                 "0543 lpfc_create_static_vport failed to"
4061                                 " allocate vport_info\n");
4062                 mempool_free(pmb, phba->mbox_mem_pool);
4063                 return;
4064         }
4065
4066         vport_buff = (uint8_t *) vport_info;
4067         do {
4068                 /* free dma buffer from previous round */
4069                 if (pmb->ctx_buf) {
4070                         mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
4071                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
4072                         kfree(mp);
4073                 }
4074                 if (lpfc_dump_static_vport(phba, pmb, offset))
4075                         goto out;
4076
4077                 pmb->vport = phba->pport;
4078                 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb,
4079                                                         LPFC_MBOX_TMO);
4080
4081                 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) {
4082                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4083                                 "0544 lpfc_create_static_vport failed to"
4084                                 " issue dump mailbox command ret 0x%x "
4085                                 "status 0x%x\n",
4086                                 mbx_wait_rc, mb->mbxStatus);
4087                         goto out;
4088                 }
4089
4090                 if (phba->sli_rev == LPFC_SLI_REV4) {
4091                         byte_count = pmb->u.mqe.un.mb_words[5];
4092                         mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
4093                         if (byte_count > sizeof(struct static_vport_info) -
4094                                         offset)
4095                                 byte_count = sizeof(struct static_vport_info)
4096                                         - offset;
4097                         memcpy(vport_buff + offset, mp->virt, byte_count);
4098                         offset += byte_count;
4099                 } else {
4100                         if (mb->un.varDmp.word_cnt >
4101                                 sizeof(struct static_vport_info) - offset)
4102                                 mb->un.varDmp.word_cnt =
4103                                         sizeof(struct static_vport_info)
4104                                                 - offset;
4105                         byte_count = mb->un.varDmp.word_cnt;
4106                         lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
4107                                 vport_buff + offset,
4108                                 byte_count);
4109
4110                         offset += byte_count;
4111                 }
4112
4113         } while (byte_count &&
4114                 offset < sizeof(struct static_vport_info));
4115
4116
4117         if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
4118                 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
4119                         != VPORT_INFO_REV)) {
4120                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4121                                 "0545 lpfc_create_static_vport bad"
4122                                 " information header 0x%x 0x%x\n",
4123                                 le32_to_cpu(vport_info->signature),
4124                                 le32_to_cpu(vport_info->rev) &
4125                                 VPORT_INFO_REV_MASK);
4126
4127                 goto out;
4128         }
4129
4130         shost = lpfc_shost_from_vport(phba->pport);
4131
4132         for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
4133                 memset(&vport_id, 0, sizeof(vport_id));
4134                 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
4135                 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
4136                 if (!vport_id.port_name || !vport_id.node_name)
4137                         continue;
4138
4139                 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
4140                 vport_id.vport_type = FC_PORTTYPE_NPIV;
4141                 vport_id.disable = false;
4142                 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
4143
4144                 if (!new_fc_vport) {
4145                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4146                                 "0546 lpfc_create_static_vport failed to"
4147                                 " create vport\n");
4148                         continue;
4149                 }
4150
4151                 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
4152                 vport->vport_flag |= STATIC_VPORT;
4153         }
4154
4155 out:
4156         kfree(vport_info);
4157         if (mbx_wait_rc != MBX_TIMEOUT) {
4158                 if (pmb->ctx_buf) {
4159                         mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
4160                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
4161                         kfree(mp);
4162                 }
4163                 mempool_free(pmb, phba->mbox_mem_pool);
4164         }
4165
4166         return;
4167 }
4168
4169 /*
4170  * This routine handles processing a Fabric REG_LOGIN mailbox
4171  * command upon completion. It is setup in the LPFC_MBOXQ
4172  * as the completion routine when the command is
4173  * handed off to the SLI layer.
4174  */
4175 void
4176 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4177 {
4178         struct lpfc_vport *vport = pmb->vport;
4179         MAILBOX_t *mb = &pmb->u.mb;
4180         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
4181         struct lpfc_nodelist *ndlp;
4182         struct Scsi_Host *shost;
4183
4184         ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4185         pmb->ctx_ndlp = NULL;
4186         pmb->ctx_buf = NULL;
4187
4188         if (mb->mbxStatus) {
4189                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4190                                  "0258 Register Fabric login error: 0x%x\n",
4191                                  mb->mbxStatus);
4192                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
4193                 kfree(mp);
4194                 mempool_free(pmb, phba->mbox_mem_pool);
4195
4196                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4197                         /* FLOGI failed, use loop map to make discovery list */
4198                         lpfc_disc_list_loopmap(vport);
4199
4200                         /* Start discovery */
4201                         lpfc_disc_start(vport);
4202                         /* Decrement the reference count to ndlp after the
4203                          * reference to the ndlp are done.
4204                          */
4205                         lpfc_nlp_put(ndlp);
4206                         return;
4207                 }
4208
4209                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
4210                 /* Decrement the reference count to ndlp after the reference
4211                  * to the ndlp are done.
4212                  */
4213                 lpfc_nlp_put(ndlp);
4214                 return;
4215         }
4216
4217         if (phba->sli_rev < LPFC_SLI_REV4)
4218                 ndlp->nlp_rpi = mb->un.varWords[0];
4219         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4220         ndlp->nlp_type |= NLP_FABRIC;
4221         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4222
4223         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
4224                 /* when physical port receive logo donot start
4225                  * vport discovery */
4226                 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
4227                         lpfc_start_fdiscs(phba);
4228                 else {
4229                         shost = lpfc_shost_from_vport(vport);
4230                         spin_lock_irq(shost->host_lock);
4231                         vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ;
4232                         spin_unlock_irq(shost->host_lock);
4233                 }
4234                 lpfc_do_scr_ns_plogi(phba, vport);
4235         }
4236
4237         lpfc_mbuf_free(phba, mp->virt, mp->phys);
4238         kfree(mp);
4239         mempool_free(pmb, phba->mbox_mem_pool);
4240
4241         /* Drop the reference count from the mbox at the end after
4242          * all the current reference to the ndlp have been done.
4243          */
4244         lpfc_nlp_put(ndlp);
4245         return;
4246 }
4247
4248  /*
4249   * This routine will issue a GID_FT for each FC4 Type supported
4250   * by the driver. ALL GID_FTs must complete before discovery is started.
4251   */
4252 int
4253 lpfc_issue_gidft(struct lpfc_vport *vport)
4254 {
4255         /* Good status, issue CT Request to NameServer */
4256         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4257             (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) {
4258                 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_FCP)) {
4259                         /* Cannot issue NameServer FCP Query, so finish up
4260                          * discovery
4261                          */
4262                         lpfc_printf_vlog(vport, KERN_ERR,
4263                                          LOG_TRACE_EVENT,
4264                                          "0604 %s FC TYPE %x %s\n",
4265                                          "Failed to issue GID_FT to ",
4266                                          FC_TYPE_FCP,
4267                                          "Finishing discovery.");
4268                         return 0;
4269                 }
4270                 vport->gidft_inp++;
4271         }
4272
4273         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4274             (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
4275                 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_NVME)) {
4276                         /* Cannot issue NameServer NVME Query, so finish up
4277                          * discovery
4278                          */
4279                         lpfc_printf_vlog(vport, KERN_ERR,
4280                                          LOG_TRACE_EVENT,
4281                                          "0605 %s FC_TYPE %x %s %d\n",
4282                                          "Failed to issue GID_FT to ",
4283                                          FC_TYPE_NVME,
4284                                          "Finishing discovery: gidftinp ",
4285                                          vport->gidft_inp);
4286                         if (vport->gidft_inp == 0)
4287                                 return 0;
4288                 } else
4289                         vport->gidft_inp++;
4290         }
4291         return vport->gidft_inp;
4292 }
4293
4294 /**
4295  * lpfc_issue_gidpt - issue a GID_PT for all N_Ports
4296  * @vport: The virtual port for which this call is being executed.
4297  *
4298  * This routine will issue a GID_PT to get a list of all N_Ports
4299  *
4300  * Return value :
4301  *   0 - Failure to issue a GID_PT
4302  *   1 - GID_PT issued
4303  **/
4304 int
4305 lpfc_issue_gidpt(struct lpfc_vport *vport)
4306 {
4307         /* Good status, issue CT Request to NameServer */
4308         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) {
4309                 /* Cannot issue NameServer FCP Query, so finish up
4310                  * discovery
4311                  */
4312                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4313                                  "0606 %s Port TYPE %x %s\n",
4314                                  "Failed to issue GID_PT to ",
4315                                  GID_PT_N_PORT,
4316                                  "Finishing discovery.");
4317                 return 0;
4318         }
4319         vport->gidft_inp++;
4320         return 1;
4321 }
4322
4323 /*
4324  * This routine handles processing a NameServer REG_LOGIN mailbox
4325  * command upon completion. It is setup in the LPFC_MBOXQ
4326  * as the completion routine when the command is
4327  * handed off to the SLI layer.
4328  */
4329 void
4330 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4331 {
4332         MAILBOX_t *mb = &pmb->u.mb;
4333         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
4334         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4335         struct lpfc_vport *vport = pmb->vport;
4336         int rc;
4337
4338         pmb->ctx_buf = NULL;
4339         pmb->ctx_ndlp = NULL;
4340         vport->gidft_inp = 0;
4341
4342         if (mb->mbxStatus) {
4343                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4344                                  "0260 Register NameServer error: 0x%x\n",
4345                                  mb->mbxStatus);
4346
4347 out:
4348                 /* decrement the node reference count held for this
4349                  * callback function.
4350                  */
4351                 lpfc_nlp_put(ndlp);
4352                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
4353                 kfree(mp);
4354                 mempool_free(pmb, phba->mbox_mem_pool);
4355
4356                 /* If the node is not registered with the scsi or nvme
4357                  * transport, remove the fabric node.  The failed reg_login
4358                  * is terminal.
4359                  */
4360                 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
4361                         spin_lock_irq(&ndlp->lock);
4362                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
4363                         spin_unlock_irq(&ndlp->lock);
4364                         lpfc_nlp_not_used(ndlp);
4365                 }
4366
4367                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4368                         /*
4369                          * RegLogin failed, use loop map to make discovery
4370                          * list
4371                          */
4372                         lpfc_disc_list_loopmap(vport);
4373
4374                         /* Start discovery */
4375                         lpfc_disc_start(vport);
4376                         return;
4377                 }
4378                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
4379                 return;
4380         }
4381
4382         if (phba->sli_rev < LPFC_SLI_REV4)
4383                 ndlp->nlp_rpi = mb->un.varWords[0];
4384         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4385         ndlp->nlp_type |= NLP_FABRIC;
4386         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4387         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
4388                          "0003 rpi:%x DID:%x flg:%x %d x%px\n",
4389                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
4390                          kref_read(&ndlp->kref),
4391                          ndlp);
4392
4393         if (vport->port_state < LPFC_VPORT_READY) {
4394                 /* Link up discovery requires Fabric registration. */
4395                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
4396                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
4397                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
4398                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
4399
4400                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4401                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP))
4402                         lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, FC_TYPE_FCP);
4403
4404                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4405                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME))
4406                         lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0,
4407                                     FC_TYPE_NVME);
4408
4409                 /* Issue SCR just before NameServer GID_FT Query */
4410                 lpfc_issue_els_scr(vport, 0);
4411
4412                 /* Link was bounced or a Fabric LOGO occurred.  Start EDC
4413                  * with initial FW values provided the congestion mode is
4414                  * not off.  Note that signals may or may not be supported
4415                  * by the adapter but FPIN is provided by default for 1
4416                  * or both missing signals support.
4417                  */
4418                 if (phba->cmf_active_mode != LPFC_CFG_OFF) {
4419                         phba->cgn_reg_fpin = phba->cgn_init_reg_fpin;
4420                         phba->cgn_reg_signal = phba->cgn_init_reg_signal;
4421                         rc = lpfc_issue_els_edc(vport, 0);
4422                         lpfc_printf_log(phba, KERN_INFO,
4423                                         LOG_INIT | LOG_ELS | LOG_DISCOVERY,
4424                                         "4220 EDC issue error x%x, Data: x%x\n",
4425                                         rc, phba->cgn_init_reg_signal);
4426                 } else {
4427                         lpfc_issue_els_rdf(vport, 0);
4428                 }
4429         }
4430
4431         vport->fc_ns_retry = 0;
4432         if (lpfc_issue_gidft(vport) == 0)
4433                 goto out;
4434
4435         /*
4436          * At this point in time we may need to wait for multiple
4437          * SLI_CTNS_GID_FT CT commands to complete before we start discovery.
4438          *
4439          * decrement the node reference count held for this
4440          * callback function.
4441          */
4442         lpfc_nlp_put(ndlp);
4443         lpfc_mbuf_free(phba, mp->virt, mp->phys);
4444         kfree(mp);
4445         mempool_free(pmb, phba->mbox_mem_pool);
4446
4447         return;
4448 }
4449
4450 /*
4451  * This routine handles processing a Fabric Controller REG_LOGIN mailbox
4452  * command upon completion. It is setup in the LPFC_MBOXQ
4453  * as the completion routine when the command is handed off to the SLI layer.
4454  */
4455 void
4456 lpfc_mbx_cmpl_fc_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4457 {
4458         struct lpfc_vport *vport = pmb->vport;
4459         MAILBOX_t *mb = &pmb->u.mb;
4460         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
4461         struct lpfc_nodelist *ndlp;
4462
4463         ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4464         pmb->ctx_ndlp = NULL;
4465         pmb->ctx_buf = NULL;
4466
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_mbuf_free(phba, mp->virt, mp->phys);
4491         kfree(mp);
4492         mempool_free(pmb, phba->mbox_mem_pool);
4493
4494         /* Drop the reference count from the mbox at the end after
4495          * all the current reference to the ndlp have been done.
4496          */
4497         lpfc_nlp_put(ndlp);
4498 }
4499
4500 static void
4501 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4502 {
4503         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4504         struct fc_rport  *rport;
4505         struct lpfc_rport_data *rdata;
4506         struct fc_rport_identifiers rport_ids;
4507         struct lpfc_hba  *phba = vport->phba;
4508         unsigned long flags;
4509
4510         if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4511                 return;
4512
4513         /* Remote port has reappeared. Re-register w/ FC transport */
4514         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
4515         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
4516         rport_ids.port_id = ndlp->nlp_DID;
4517         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
4518
4519
4520         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4521                               "rport add:       did:x%x flg:x%x type x%x",
4522                               ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4523
4524         /* Don't add the remote port if unloading. */
4525         if (vport->load_flag & FC_UNLOADING)
4526                 return;
4527
4528         /*
4529          * Disassociate any older association between this ndlp and rport
4530          */
4531         if (ndlp->rport) {
4532                 rdata = ndlp->rport->dd_data;
4533                 rdata->pnode = NULL;
4534         }
4535
4536         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
4537         if (!rport) {
4538                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
4539                            "Warning: fc_remote_port_add failed\n");
4540                 return;
4541         }
4542
4543         /* Successful port add.  Complete initializing node data */
4544         rport->maxframe_size = ndlp->nlp_maxframe;
4545         rport->supported_classes = ndlp->nlp_class_sup;
4546         rdata = rport->dd_data;
4547         rdata->pnode = lpfc_nlp_get(ndlp);
4548         if (!rdata->pnode) {
4549                 dev_warn(&phba->pcidev->dev,
4550                          "Warning - node ref failed. Unreg rport\n");
4551                 fc_remote_port_delete(rport);
4552                 ndlp->rport = NULL;
4553                 return;
4554         }
4555
4556         spin_lock_irqsave(&ndlp->lock, flags);
4557         ndlp->fc4_xpt_flags |= SCSI_XPT_REGD;
4558         spin_unlock_irqrestore(&ndlp->lock, flags);
4559
4560         if (ndlp->nlp_type & NLP_FCP_TARGET)
4561                 rport_ids.roles |= FC_PORT_ROLE_FCP_TARGET;
4562         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
4563                 rport_ids.roles |= FC_PORT_ROLE_FCP_INITIATOR;
4564         if (ndlp->nlp_type & NLP_NVME_INITIATOR)
4565                 rport_ids.roles |= FC_PORT_ROLE_NVME_INITIATOR;
4566         if (ndlp->nlp_type & NLP_NVME_TARGET)
4567                 rport_ids.roles |= FC_PORT_ROLE_NVME_TARGET;
4568         if (ndlp->nlp_type & NLP_NVME_DISCOVERY)
4569                 rport_ids.roles |= FC_PORT_ROLE_NVME_DISCOVERY;
4570
4571         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
4572                 fc_remote_port_rolechg(rport, rport_ids.roles);
4573
4574         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
4575                          "3183 %s rport x%px DID x%x, role x%x refcnt %d\n",
4576                          __func__, rport, rport->port_id, rport->roles,
4577                          kref_read(&ndlp->kref));
4578
4579         if ((rport->scsi_target_id != -1) &&
4580             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
4581                 ndlp->nlp_sid = rport->scsi_target_id;
4582         }
4583
4584         return;
4585 }
4586
4587 static void
4588 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
4589 {
4590         struct fc_rport *rport = ndlp->rport;
4591         struct lpfc_vport *vport = ndlp->vport;
4592
4593         if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4594                 return;
4595
4596         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4597                 "rport delete:    did:x%x flg:x%x type x%x",
4598                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4599
4600         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4601                          "3184 rport unregister x%06x, rport x%px "
4602                          "xptflg x%x refcnt %d\n",
4603                          ndlp->nlp_DID, rport, ndlp->fc4_xpt_flags,
4604                          kref_read(&ndlp->kref));
4605
4606         fc_remote_port_delete(rport);
4607         lpfc_nlp_put(ndlp);
4608 }
4609
4610 static void
4611 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
4612 {
4613         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4614         unsigned long iflags;
4615
4616         spin_lock_irqsave(shost->host_lock, iflags);
4617         switch (state) {
4618         case NLP_STE_UNUSED_NODE:
4619                 vport->fc_unused_cnt += count;
4620                 break;
4621         case NLP_STE_PLOGI_ISSUE:
4622                 vport->fc_plogi_cnt += count;
4623                 break;
4624         case NLP_STE_ADISC_ISSUE:
4625                 vport->fc_adisc_cnt += count;
4626                 break;
4627         case NLP_STE_REG_LOGIN_ISSUE:
4628                 vport->fc_reglogin_cnt += count;
4629                 break;
4630         case NLP_STE_PRLI_ISSUE:
4631                 vport->fc_prli_cnt += count;
4632                 break;
4633         case NLP_STE_UNMAPPED_NODE:
4634                 vport->fc_unmap_cnt += count;
4635                 break;
4636         case NLP_STE_MAPPED_NODE:
4637                 vport->fc_map_cnt += count;
4638                 break;
4639         case NLP_STE_NPR_NODE:
4640                 if (vport->fc_npr_cnt == 0 && count == -1)
4641                         vport->fc_npr_cnt = 0;
4642                 else
4643                         vport->fc_npr_cnt += count;
4644                 break;
4645         }
4646         spin_unlock_irqrestore(shost->host_lock, iflags);
4647 }
4648
4649 /* Register a node with backend if not already done */
4650 void
4651 lpfc_nlp_reg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4652 {
4653         unsigned long iflags;
4654
4655         lpfc_check_nlp_post_devloss(vport, ndlp);
4656
4657         spin_lock_irqsave(&ndlp->lock, iflags);
4658         if (ndlp->fc4_xpt_flags & NLP_XPT_REGD) {
4659                 /* Already registered with backend, trigger rescan */
4660                 spin_unlock_irqrestore(&ndlp->lock, iflags);
4661
4662                 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD &&
4663                     ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY)) {
4664                         lpfc_nvme_rescan_port(vport, ndlp);
4665                 }
4666                 return;
4667         }
4668
4669         ndlp->fc4_xpt_flags |= NLP_XPT_REGD;
4670         spin_unlock_irqrestore(&ndlp->lock, iflags);
4671
4672         if (lpfc_valid_xpt_node(ndlp)) {
4673                 vport->phba->nport_event_cnt++;
4674                 /*
4675                  * Tell the fc transport about the port, if we haven't
4676                  * already. If we have, and it's a scsi entity, be
4677                  */
4678                 lpfc_register_remote_port(vport, ndlp);
4679         }
4680
4681         /* We are done if we do not have any NVME remote node */
4682         if (!(ndlp->nlp_fc4_type & NLP_FC4_NVME))
4683                 return;
4684
4685         /* Notify the NVME transport of this new rport. */
4686         if (vport->phba->sli_rev >= LPFC_SLI_REV4 &&
4687                         ndlp->nlp_fc4_type & NLP_FC4_NVME) {
4688                 if (vport->phba->nvmet_support == 0) {
4689                         /* Register this rport with the transport.
4690                          * Only NVME Target Rports are registered with
4691                          * the transport.
4692                          */
4693                         if (ndlp->nlp_type & NLP_NVME_TARGET) {
4694                                 vport->phba->nport_event_cnt++;
4695                                 lpfc_nvme_register_port(vport, ndlp);
4696                         }
4697                 } else {
4698                         /* Just take an NDLP ref count since the
4699                          * target does not register rports.
4700                          */
4701                         lpfc_nlp_get(ndlp);
4702                 }
4703         }
4704 }
4705
4706 /* Unregister a node with backend if not already done */
4707 void
4708 lpfc_nlp_unreg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4709 {
4710         unsigned long iflags;
4711
4712         spin_lock_irqsave(&ndlp->lock, iflags);
4713         if (!(ndlp->fc4_xpt_flags & NLP_XPT_REGD)) {
4714                 spin_unlock_irqrestore(&ndlp->lock, iflags);
4715                 return;
4716         }
4717
4718         ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD;
4719         spin_unlock_irqrestore(&ndlp->lock, iflags);
4720
4721         if (ndlp->rport &&
4722             ndlp->fc4_xpt_flags & SCSI_XPT_REGD) {
4723                 vport->phba->nport_event_cnt++;
4724                 lpfc_unregister_remote_port(ndlp);
4725         }
4726
4727         if (ndlp->fc4_xpt_flags & NVME_XPT_REGD) {
4728                 vport->phba->nport_event_cnt++;
4729                 if (vport->phba->nvmet_support == 0) {
4730                         /* Start devloss if target. */
4731                         if (ndlp->nlp_type & NLP_NVME_TARGET)
4732                                 lpfc_nvme_unregister_port(vport, ndlp);
4733                 } else {
4734                         /* NVMET has no upcall. */
4735                         lpfc_nlp_put(ndlp);
4736                 }
4737         }
4738
4739 }
4740
4741 /*
4742  * Adisc state change handling
4743  */
4744 static void
4745 lpfc_handle_adisc_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4746                 int new_state)
4747 {
4748         switch (new_state) {
4749         /*
4750          * Any state to ADISC_ISSUE
4751          * Do nothing, adisc cmpl handling will trigger state changes
4752          */
4753         case NLP_STE_ADISC_ISSUE:
4754                 break;
4755
4756         /*
4757          * ADISC_ISSUE to mapped states
4758          * Trigger a registration with backend, it will be nop if
4759          * already registered
4760          */
4761         case NLP_STE_UNMAPPED_NODE:
4762                 ndlp->nlp_type |= NLP_FC_NODE;
4763                 fallthrough;
4764         case NLP_STE_MAPPED_NODE:
4765                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4766                 lpfc_nlp_reg_node(vport, ndlp);
4767                 break;
4768
4769         /*
4770          * ADISC_ISSUE to non-mapped states
4771          * We are moving from ADISC_ISSUE to a non-mapped state because
4772          * ADISC failed, we would have skipped unregistering with
4773          * backend, attempt it now
4774          */
4775         case NLP_STE_NPR_NODE:
4776                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
4777                 fallthrough;
4778         default:
4779                 lpfc_nlp_unreg_node(vport, ndlp);
4780                 break;
4781         }
4782
4783 }
4784
4785 static void
4786 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4787                        int old_state, int new_state)
4788 {
4789         /* Trap ADISC changes here */
4790         if (new_state == NLP_STE_ADISC_ISSUE ||
4791             old_state == NLP_STE_ADISC_ISSUE) {
4792                 lpfc_handle_adisc_state(vport, ndlp, new_state);
4793                 return;
4794         }
4795
4796         if (new_state == NLP_STE_UNMAPPED_NODE) {
4797                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4798                 ndlp->nlp_type |= NLP_FC_NODE;
4799         }
4800         if (new_state == NLP_STE_MAPPED_NODE)
4801                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4802         if (new_state == NLP_STE_NPR_NODE)
4803                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
4804
4805         /* Reg/Unreg for FCP and NVME Transport interface */
4806         if ((old_state == NLP_STE_MAPPED_NODE ||
4807              old_state == NLP_STE_UNMAPPED_NODE)) {
4808                 /* For nodes marked for ADISC, Handle unreg in ADISC cmpl
4809                  * if linkup. In linkdown do unreg_node
4810                  */
4811                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC) ||
4812                     !lpfc_is_link_up(vport->phba))
4813                         lpfc_nlp_unreg_node(vport, ndlp);
4814         }
4815
4816         if (new_state ==  NLP_STE_MAPPED_NODE ||
4817             new_state == NLP_STE_UNMAPPED_NODE)
4818                 lpfc_nlp_reg_node(vport, ndlp);
4819
4820         if ((new_state ==  NLP_STE_MAPPED_NODE) &&
4821                 (vport->stat_data_enabled)) {
4822                 /*
4823                  * A new target is discovered, if there is no buffer for
4824                  * statistical data collection allocate buffer.
4825                  */
4826                 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
4827                                          sizeof(struct lpfc_scsicmd_bkt),
4828                                          GFP_KERNEL);
4829
4830                 if (!ndlp->lat_data)
4831                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4832                                 "0286 lpfc_nlp_state_cleanup failed to "
4833                                 "allocate statistical data buffer DID "
4834                                 "0x%x\n", ndlp->nlp_DID);
4835         }
4836         /*
4837          * If the node just added to Mapped list was an FCP target,
4838          * but the remote port registration failed or assigned a target
4839          * id outside the presentable range - move the node to the
4840          * Unmapped List.
4841          */
4842         if ((new_state == NLP_STE_MAPPED_NODE) &&
4843             (ndlp->nlp_type & NLP_FCP_TARGET) &&
4844             (!ndlp->rport ||
4845              ndlp->rport->scsi_target_id == -1 ||
4846              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
4847                 spin_lock_irq(&ndlp->lock);
4848                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
4849                 spin_unlock_irq(&ndlp->lock);
4850                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4851         }
4852 }
4853
4854 static char *
4855 lpfc_nlp_state_name(char *buffer, size_t size, int state)
4856 {
4857         static char *states[] = {
4858                 [NLP_STE_UNUSED_NODE] = "UNUSED",
4859                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
4860                 [NLP_STE_ADISC_ISSUE] = "ADISC",
4861                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
4862                 [NLP_STE_PRLI_ISSUE] = "PRLI",
4863                 [NLP_STE_LOGO_ISSUE] = "LOGO",
4864                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
4865                 [NLP_STE_MAPPED_NODE] = "MAPPED",
4866                 [NLP_STE_NPR_NODE] = "NPR",
4867         };
4868
4869         if (state < NLP_STE_MAX_STATE && states[state])
4870                 strlcpy(buffer, states[state], size);
4871         else
4872                 snprintf(buffer, size, "unknown (%d)", state);
4873         return buffer;
4874 }
4875
4876 void
4877 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4878                    int state)
4879 {
4880         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4881         int  old_state = ndlp->nlp_state;
4882         int node_dropped = ndlp->nlp_flag & NLP_DROPPED;
4883         char name1[16], name2[16];
4884
4885         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4886                          "0904 NPort state transition x%06x, %s -> %s\n",
4887                          ndlp->nlp_DID,
4888                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
4889                          lpfc_nlp_state_name(name2, sizeof(name2), state));
4890
4891         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4892                 "node statechg    did:x%x old:%d ste:%d",
4893                 ndlp->nlp_DID, old_state, state);
4894
4895         if (node_dropped && old_state == NLP_STE_UNUSED_NODE &&
4896             state != NLP_STE_UNUSED_NODE) {
4897                 ndlp->nlp_flag &= ~NLP_DROPPED;
4898                 lpfc_nlp_get(ndlp);
4899         }
4900
4901         if (old_state == NLP_STE_NPR_NODE &&
4902             state != NLP_STE_NPR_NODE)
4903                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4904         if (old_state == NLP_STE_UNMAPPED_NODE) {
4905                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
4906                 ndlp->nlp_type &= ~NLP_FC_NODE;
4907         }
4908
4909         if (list_empty(&ndlp->nlp_listp)) {
4910                 spin_lock_irq(shost->host_lock);
4911                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4912                 spin_unlock_irq(shost->host_lock);
4913         } else if (old_state)
4914                 lpfc_nlp_counters(vport, old_state, -1);
4915
4916         ndlp->nlp_state = state;
4917         lpfc_nlp_counters(vport, state, 1);
4918         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
4919 }
4920
4921 void
4922 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4923 {
4924         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4925
4926         if (list_empty(&ndlp->nlp_listp)) {
4927                 spin_lock_irq(shost->host_lock);
4928                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4929                 spin_unlock_irq(shost->host_lock);
4930         }
4931 }
4932
4933 void
4934 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4935 {
4936         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4937
4938         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4939         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4940                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4941         spin_lock_irq(shost->host_lock);
4942         list_del_init(&ndlp->nlp_listp);
4943         spin_unlock_irq(shost->host_lock);
4944         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4945                                 NLP_STE_UNUSED_NODE);
4946 }
4947
4948 /**
4949  * lpfc_initialize_node - Initialize all fields of node object
4950  * @vport: Pointer to Virtual Port object.
4951  * @ndlp: Pointer to FC node object.
4952  * @did: FC_ID of the node.
4953  *
4954  * This function is always called when node object need to be initialized.
4955  * It initializes all the fields of the node object. Although the reference
4956  * to phba from @ndlp can be obtained indirectly through it's reference to
4957  * @vport, a direct reference to phba is taken here by @ndlp. This is due
4958  * to the life-span of the @ndlp might go beyond the existence of @vport as
4959  * the final release of ndlp is determined by its reference count. And, the
4960  * operation on @ndlp needs the reference to phba.
4961  **/
4962 static inline void
4963 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4964         uint32_t did)
4965 {
4966         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
4967         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
4968         timer_setup(&ndlp->nlp_delayfunc, lpfc_els_retry_delay, 0);
4969         INIT_LIST_HEAD(&ndlp->recovery_evt.evt_listp);
4970
4971         ndlp->nlp_DID = did;
4972         ndlp->vport = vport;
4973         ndlp->phba = vport->phba;
4974         ndlp->nlp_sid = NLP_NO_SID;
4975         ndlp->nlp_fc4_type = NLP_FC4_NONE;
4976         kref_init(&ndlp->kref);
4977         atomic_set(&ndlp->cmd_pending, 0);
4978         ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
4979         ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
4980 }
4981
4982 void
4983 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4984 {
4985         /*
4986          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
4987          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
4988          * the ndlp from the vport. The ndlp marked as UNUSED on the list
4989          * until ALL other outstanding threads have completed. We check
4990          * that the ndlp not already in the UNUSED state before we proceed.
4991          */
4992         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
4993                 return;
4994         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
4995         ndlp->nlp_flag |= NLP_DROPPED;
4996         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4997                 lpfc_cleanup_vports_rrqs(vport, ndlp);
4998                 lpfc_unreg_rpi(vport, ndlp);
4999         }
5000
5001         lpfc_nlp_put(ndlp);
5002         return;
5003 }
5004
5005 /*
5006  * Start / ReStart rescue timer for Discovery / RSCN handling
5007  */
5008 void
5009 lpfc_set_disctmo(struct lpfc_vport *vport)
5010 {
5011         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5012         struct lpfc_hba  *phba = vport->phba;
5013         uint32_t tmo;
5014
5015         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
5016                 /* For FAN, timeout should be greater than edtov */
5017                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
5018         } else {
5019                 /* Normal discovery timeout should be > than ELS/CT timeout
5020                  * FC spec states we need 3 * ratov for CT requests
5021                  */
5022                 tmo = ((phba->fc_ratov * 3) + 3);
5023         }
5024
5025
5026         if (!timer_pending(&vport->fc_disctmo)) {
5027                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
5028                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
5029                         tmo, vport->port_state, vport->fc_flag);
5030         }
5031
5032         mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo));
5033         spin_lock_irq(shost->host_lock);
5034         vport->fc_flag |= FC_DISC_TMO;
5035         spin_unlock_irq(shost->host_lock);
5036
5037         /* Start Discovery Timer state <hba_state> */
5038         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5039                          "0247 Start Discovery Timer state x%x "
5040                          "Data: x%x x%lx x%x x%x\n",
5041                          vport->port_state, tmo,
5042                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
5043                          vport->fc_adisc_cnt);
5044
5045         return;
5046 }
5047
5048 /*
5049  * Cancel rescue timer for Discovery / RSCN handling
5050  */
5051 int
5052 lpfc_can_disctmo(struct lpfc_vport *vport)
5053 {
5054         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5055         unsigned long iflags;
5056
5057         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
5058                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
5059                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
5060
5061         /* Turn off discovery timer if its running */
5062         if (vport->fc_flag & FC_DISC_TMO) {
5063                 spin_lock_irqsave(shost->host_lock, iflags);
5064                 vport->fc_flag &= ~FC_DISC_TMO;
5065                 spin_unlock_irqrestore(shost->host_lock, iflags);
5066                 del_timer_sync(&vport->fc_disctmo);
5067                 spin_lock_irqsave(&vport->work_port_lock, iflags);
5068                 vport->work_port_events &= ~WORKER_DISC_TMO;
5069                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
5070         }
5071
5072         /* Cancel Discovery Timer state <hba_state> */
5073         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5074                          "0248 Cancel Discovery Timer state x%x "
5075                          "Data: x%x x%x x%x\n",
5076                          vport->port_state, vport->fc_flag,
5077                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
5078         return 0;
5079 }
5080
5081 /*
5082  * Check specified ring for outstanding IOCB on the SLI queue
5083  * Return true if iocb matches the specified nport
5084  */
5085 int
5086 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
5087                     struct lpfc_sli_ring *pring,
5088                     struct lpfc_iocbq *iocb,
5089                     struct lpfc_nodelist *ndlp)
5090 {
5091         IOCB_t *icmd = &iocb->iocb;
5092         struct lpfc_vport    *vport = ndlp->vport;
5093
5094         if (iocb->vport != vport)
5095                 return 0;
5096
5097         if (pring->ringno == LPFC_ELS_RING) {
5098                 switch (icmd->ulpCommand) {
5099                 case CMD_GEN_REQUEST64_CR:
5100                         if (iocb->context_un.ndlp == ndlp)
5101                                 return 1;
5102                         fallthrough;
5103                 case CMD_ELS_REQUEST64_CR:
5104                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
5105                                 return 1;
5106                         fallthrough;
5107                 case CMD_XMIT_ELS_RSP64_CX:
5108                         if (iocb->context1 == (uint8_t *) ndlp)
5109                                 return 1;
5110                 }
5111         } else if (pring->ringno == LPFC_FCP_RING) {
5112                 /* Skip match check if waiting to relogin to FCP target */
5113                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
5114                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
5115                         return 0;
5116                 }
5117                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
5118                         return 1;
5119                 }
5120         }
5121         return 0;
5122 }
5123
5124 static void
5125 __lpfc_dequeue_nport_iocbs(struct lpfc_hba *phba,
5126                 struct lpfc_nodelist *ndlp, struct lpfc_sli_ring *pring,
5127                 struct list_head *dequeue_list)
5128 {
5129         struct lpfc_iocbq *iocb, *next_iocb;
5130
5131         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
5132                 /* Check to see if iocb matches the nport */
5133                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
5134                         /* match, dequeue */
5135                         list_move_tail(&iocb->list, dequeue_list);
5136         }
5137 }
5138
5139 static void
5140 lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba *phba,
5141                 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
5142 {
5143         struct lpfc_sli *psli = &phba->sli;
5144         uint32_t i;
5145
5146         spin_lock_irq(&phba->hbalock);
5147         for (i = 0; i < psli->num_rings; i++)
5148                 __lpfc_dequeue_nport_iocbs(phba, ndlp, &psli->sli3_ring[i],
5149                                                 dequeue_list);
5150         spin_unlock_irq(&phba->hbalock);
5151 }
5152
5153 static void
5154 lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba *phba,
5155                 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
5156 {
5157         struct lpfc_sli_ring *pring;
5158         struct lpfc_queue *qp = NULL;
5159
5160         spin_lock_irq(&phba->hbalock);
5161         list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
5162                 pring = qp->pring;
5163                 if (!pring)
5164                         continue;
5165                 spin_lock(&pring->ring_lock);
5166                 __lpfc_dequeue_nport_iocbs(phba, ndlp, pring, dequeue_list);
5167                 spin_unlock(&pring->ring_lock);
5168         }
5169         spin_unlock_irq(&phba->hbalock);
5170 }
5171
5172 /*
5173  * Free resources / clean up outstanding I/Os
5174  * associated with nlp_rpi in the LPFC_NODELIST entry.
5175  */
5176 static int
5177 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
5178 {
5179         LIST_HEAD(completions);
5180
5181         lpfc_fabric_abort_nport(ndlp);
5182
5183         /*
5184          * Everything that matches on txcmplq will be returned
5185          * by firmware with a no rpi error.
5186          */
5187         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
5188                 if (phba->sli_rev != LPFC_SLI_REV4)
5189                         lpfc_sli3_dequeue_nport_iocbs(phba, ndlp, &completions);
5190                 else
5191                         lpfc_sli4_dequeue_nport_iocbs(phba, ndlp, &completions);
5192         }
5193
5194         /* Cancel all the IOCBs from the completions list */
5195         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5196                               IOERR_SLI_ABORTED);
5197
5198         return 0;
5199 }
5200
5201 /**
5202  * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO
5203  * @phba: Pointer to HBA context object.
5204  * @pmb: Pointer to mailbox object.
5205  *
5206  * This function will issue an ELS LOGO command after completing
5207  * the UNREG_RPI.
5208  **/
5209 static void
5210 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5211 {
5212         struct lpfc_vport  *vport = pmb->vport;
5213         struct lpfc_nodelist *ndlp;
5214
5215         ndlp = (struct lpfc_nodelist *)(pmb->ctx_ndlp);
5216         if (!ndlp)
5217                 return;
5218         lpfc_issue_els_logo(vport, ndlp, 0);
5219         mempool_free(pmb, phba->mbox_mem_pool);
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
5248 /*
5249  * Sets the mailbox completion handler to be used for the
5250  * unreg_rpi command. The handler varies based on the state of
5251  * the port and what will be happening to the rpi next.
5252  */
5253 static void
5254 lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba *phba, struct lpfc_vport *vport,
5255         struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox)
5256 {
5257         unsigned long iflags;
5258
5259         /* Driver always gets a reference on the mailbox job
5260          * in support of async jobs.
5261          */
5262         mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
5263         if (!mbox->ctx_ndlp)
5264                 return;
5265
5266         if (ndlp->nlp_flag & NLP_ISSUE_LOGO) {
5267                 mbox->mbox_cmpl = lpfc_nlp_logo_unreg;
5268
5269         } else if (phba->sli_rev == LPFC_SLI_REV4 &&
5270                    (!(vport->load_flag & FC_UNLOADING)) &&
5271                     (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
5272                                       LPFC_SLI_INTF_IF_TYPE_2) &&
5273                     (kref_read(&ndlp->kref) > 0)) {
5274                 mbox->mbox_cmpl = lpfc_sli4_unreg_rpi_cmpl_clr;
5275         } else {
5276                 if (vport->load_flag & FC_UNLOADING) {
5277                         if (phba->sli_rev == LPFC_SLI_REV4) {
5278                                 spin_lock_irqsave(&ndlp->lock, iflags);
5279                                 ndlp->nlp_flag |= NLP_RELEASE_RPI;
5280                                 spin_unlock_irqrestore(&ndlp->lock, iflags);
5281                         }
5282                 }
5283                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5284         }
5285 }
5286
5287 /*
5288  * Free rpi associated with LPFC_NODELIST entry.
5289  * This routine is called from lpfc_freenode(), when we are removing
5290  * a LPFC_NODELIST entry. It is also called if the driver initiates a
5291  * LOGO that completes successfully, and we are waiting to PLOGI back
5292  * to the remote NPort. In addition, it is called after we receive
5293  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
5294  * we are waiting to PLOGI back to the remote NPort.
5295  */
5296 int
5297 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5298 {
5299         struct lpfc_hba *phba = vport->phba;
5300         LPFC_MBOXQ_t    *mbox;
5301         int rc, acc_plogi = 1;
5302         uint16_t rpi;
5303
5304         if (ndlp->nlp_flag & NLP_RPI_REGISTERED ||
5305             ndlp->nlp_flag & NLP_REG_LOGIN_SEND) {
5306                 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
5307                         lpfc_printf_vlog(vport, KERN_INFO,
5308                                          LOG_NODE | LOG_DISCOVERY,
5309                                          "3366 RPI x%x needs to be "
5310                                          "unregistered nlp_flag x%x "
5311                                          "did x%x\n",
5312                                          ndlp->nlp_rpi, ndlp->nlp_flag,
5313                                          ndlp->nlp_DID);
5314
5315                 /* If there is already an UNREG in progress for this ndlp,
5316                  * no need to queue up another one.
5317                  */
5318                 if (ndlp->nlp_flag & NLP_UNREG_INP) {
5319                         lpfc_printf_vlog(vport, KERN_INFO,
5320                                          LOG_NODE | LOG_DISCOVERY,
5321                                          "1436 unreg_rpi SKIP UNREG x%x on "
5322                                          "NPort x%x deferred x%x  flg x%x "
5323                                          "Data: x%px\n",
5324                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5325                                          ndlp->nlp_defer_did,
5326                                          ndlp->nlp_flag, ndlp);
5327                         goto out;
5328                 }
5329
5330                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5331                 if (mbox) {
5332                         /* SLI4 ports require the physical rpi value. */
5333                         rpi = ndlp->nlp_rpi;
5334                         if (phba->sli_rev == LPFC_SLI_REV4)
5335                                 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
5336
5337                         lpfc_unreg_login(phba, vport->vpi, rpi, mbox);
5338                         mbox->vport = vport;
5339                         lpfc_set_unreg_login_mbx_cmpl(phba, vport, ndlp, mbox);
5340                         if (!mbox->ctx_ndlp) {
5341                                 mempool_free(mbox, phba->mbox_mem_pool);
5342                                 return 1;
5343                         }
5344
5345                         if (mbox->mbox_cmpl == lpfc_sli4_unreg_rpi_cmpl_clr)
5346                                 /*
5347                                  * accept PLOGIs after unreg_rpi_cmpl
5348                                  */
5349                                 acc_plogi = 0;
5350                         if (((ndlp->nlp_DID & Fabric_DID_MASK) !=
5351                             Fabric_DID_MASK) &&
5352                             (!(vport->fc_flag & FC_OFFLINE_MODE)))
5353                                 ndlp->nlp_flag |= NLP_UNREG_INP;
5354
5355                         lpfc_printf_vlog(vport, KERN_INFO,
5356                                          LOG_NODE | LOG_DISCOVERY,
5357                                          "1433 unreg_rpi UNREG x%x on "
5358                                          "NPort x%x deferred flg x%x "
5359                                          "Data:x%px\n",
5360                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5361                                          ndlp->nlp_flag, ndlp);
5362
5363                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5364                         if (rc == MBX_NOT_FINISHED) {
5365                                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5366                                 mempool_free(mbox, phba->mbox_mem_pool);
5367                                 acc_plogi = 1;
5368                         }
5369                 } else {
5370                         lpfc_printf_vlog(vport, KERN_INFO,
5371                                          LOG_NODE | LOG_DISCOVERY,
5372                                          "1444 Failed to allocate mempool "
5373                                          "unreg_rpi UNREG x%x, "
5374                                          "DID x%x, flag x%x, "
5375                                          "ndlp x%px\n",
5376                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5377                                          ndlp->nlp_flag, ndlp);
5378
5379                         /* Because mempool_alloc failed, we
5380                          * will issue a LOGO here and keep the rpi alive if
5381                          * not unloading.
5382                          */
5383                         if (!(vport->load_flag & FC_UNLOADING)) {
5384                                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5385                                 lpfc_issue_els_logo(vport, ndlp, 0);
5386                                 ndlp->nlp_prev_state = ndlp->nlp_state;
5387                                 lpfc_nlp_set_state(vport, ndlp,
5388                                                    NLP_STE_NPR_NODE);
5389                         }
5390
5391                         return 1;
5392                 }
5393                 lpfc_no_rpi(phba, ndlp);
5394 out:
5395                 if (phba->sli_rev != LPFC_SLI_REV4)
5396                         ndlp->nlp_rpi = 0;
5397                 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
5398                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
5399                 if (acc_plogi)
5400                         ndlp->nlp_flag &= ~NLP_LOGO_ACC;
5401                 return 1;
5402         }
5403         ndlp->nlp_flag &= ~NLP_LOGO_ACC;
5404         return 0;
5405 }
5406
5407 /**
5408  * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
5409  * @phba: pointer to lpfc hba data structure.
5410  *
5411  * This routine is invoked to unregister all the currently registered RPIs
5412  * to the HBA.
5413  **/
5414 void
5415 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
5416 {
5417         struct lpfc_vport **vports;
5418         struct lpfc_nodelist *ndlp;
5419         struct Scsi_Host *shost;
5420         int i;
5421
5422         vports = lpfc_create_vport_work_array(phba);
5423         if (!vports) {
5424                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5425                                 "2884 Vport array allocation failed \n");
5426                 return;
5427         }
5428         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5429                 shost = lpfc_shost_from_vport(vports[i]);
5430                 spin_lock_irq(shost->host_lock);
5431                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
5432                         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
5433                                 /* The mempool_alloc might sleep */
5434                                 spin_unlock_irq(shost->host_lock);
5435                                 lpfc_unreg_rpi(vports[i], ndlp);
5436                                 spin_lock_irq(shost->host_lock);
5437                         }
5438                 }
5439                 spin_unlock_irq(shost->host_lock);
5440         }
5441         lpfc_destroy_vport_work_array(phba, vports);
5442 }
5443
5444 void
5445 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
5446 {
5447         struct lpfc_hba  *phba  = vport->phba;
5448         LPFC_MBOXQ_t     *mbox;
5449         int rc;
5450
5451         if (phba->sli_rev == LPFC_SLI_REV4) {
5452                 lpfc_sli4_unreg_all_rpis(vport);
5453                 return;
5454         }
5455
5456         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5457         if (mbox) {
5458                 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT,
5459                                  mbox);
5460                 mbox->vport = vport;
5461                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5462                 mbox->ctx_ndlp = NULL;
5463                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5464                 if (rc != MBX_TIMEOUT)
5465                         mempool_free(mbox, phba->mbox_mem_pool);
5466
5467                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5468                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5469                                          "1836 Could not issue "
5470                                          "unreg_login(all_rpis) status %d\n",
5471                                          rc);
5472         }
5473 }
5474
5475 void
5476 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
5477 {
5478         struct lpfc_hba  *phba  = vport->phba;
5479         LPFC_MBOXQ_t     *mbox;
5480         int rc;
5481
5482         /* Unreg DID is an SLI3 operation. */
5483         if (phba->sli_rev > LPFC_SLI_REV3)
5484                 return;
5485
5486         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5487         if (mbox) {
5488                 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS,
5489                                mbox);
5490                 mbox->vport = vport;
5491                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5492                 mbox->ctx_ndlp = NULL;
5493                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5494                 if (rc != MBX_TIMEOUT)
5495                         mempool_free(mbox, phba->mbox_mem_pool);
5496
5497                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5498                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5499                                          "1815 Could not issue "
5500                                          "unreg_did (default rpis) status %d\n",
5501                                          rc);
5502         }
5503 }
5504
5505 /*
5506  * Free resources associated with LPFC_NODELIST entry
5507  * so it can be freed.
5508  */
5509 static int
5510 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5511 {
5512         struct lpfc_hba  *phba = vport->phba;
5513         LPFC_MBOXQ_t *mb, *nextmb;
5514         struct lpfc_dmabuf *mp;
5515
5516         /* Cleanup node for NPort <nlp_DID> */
5517         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5518                          "0900 Cleanup node for NPort x%x "
5519                          "Data: x%x x%x x%x\n",
5520                          ndlp->nlp_DID, ndlp->nlp_flag,
5521                          ndlp->nlp_state, ndlp->nlp_rpi);
5522         lpfc_dequeue_node(vport, ndlp);
5523
5524         /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */
5525
5526         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
5527         if ((mb = phba->sli.mbox_active)) {
5528                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5529                    !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5530                    (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
5531                         mb->ctx_ndlp = NULL;
5532                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5533                 }
5534         }
5535
5536         spin_lock_irq(&phba->hbalock);
5537         /* Cleanup REG_LOGIN completions which are not yet processed */
5538         list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
5539                 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) ||
5540                         (mb->mbox_flag & LPFC_MBX_IMED_UNREG) ||
5541                         (ndlp != (struct lpfc_nodelist *)mb->ctx_ndlp))
5542                         continue;
5543
5544                 mb->ctx_ndlp = NULL;
5545                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5546         }
5547
5548         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
5549                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5550                    !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5551                     (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
5552                         mp = (struct lpfc_dmabuf *)(mb->ctx_buf);
5553                         if (mp) {
5554                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
5555                                 kfree(mp);
5556                         }
5557                         list_del(&mb->list);
5558                         mempool_free(mb, phba->mbox_mem_pool);
5559                         /* We shall not invoke the lpfc_nlp_put to decrement
5560                          * the ndlp reference count as we are in the process
5561                          * of lpfc_nlp_release.
5562                          */
5563                 }
5564         }
5565         spin_unlock_irq(&phba->hbalock);
5566
5567         lpfc_els_abort(phba, ndlp);
5568
5569         spin_lock_irq(&ndlp->lock);
5570         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
5571         spin_unlock_irq(&ndlp->lock);
5572
5573         ndlp->nlp_last_elscmd = 0;
5574         del_timer_sync(&ndlp->nlp_delayfunc);
5575
5576         list_del_init(&ndlp->els_retry_evt.evt_listp);
5577         list_del_init(&ndlp->dev_loss_evt.evt_listp);
5578         list_del_init(&ndlp->recovery_evt.evt_listp);
5579         lpfc_cleanup_vports_rrqs(vport, ndlp);
5580
5581         if (phba->sli_rev == LPFC_SLI_REV4)
5582                 ndlp->nlp_flag |= NLP_RELEASE_RPI;
5583
5584         return 0;
5585 }
5586
5587 static int
5588 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
5589               uint32_t did)
5590 {
5591         D_ID mydid, ndlpdid, matchdid;
5592
5593         if (did == Bcast_DID)
5594                 return 0;
5595
5596         /* First check for Direct match */
5597         if (ndlp->nlp_DID == did)
5598                 return 1;
5599
5600         /* Next check for area/domain identically equals 0 match */
5601         mydid.un.word = vport->fc_myDID;
5602         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
5603                 return 0;
5604         }
5605
5606         matchdid.un.word = did;
5607         ndlpdid.un.word = ndlp->nlp_DID;
5608         if (matchdid.un.b.id == ndlpdid.un.b.id) {
5609                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
5610                     (mydid.un.b.area == matchdid.un.b.area)) {
5611                         /* This code is supposed to match the ID
5612                          * for a private loop device that is
5613                          * connect to fl_port. But we need to
5614                          * check that the port did not just go
5615                          * from pt2pt to fabric or we could end
5616                          * up matching ndlp->nlp_DID 000001 to
5617                          * fabric DID 0x20101
5618                          */
5619                         if ((ndlpdid.un.b.domain == 0) &&
5620                             (ndlpdid.un.b.area == 0)) {
5621                                 if (ndlpdid.un.b.id &&
5622                                     vport->phba->fc_topology ==
5623                                     LPFC_TOPOLOGY_LOOP)
5624                                         return 1;
5625                         }
5626                         return 0;
5627                 }
5628
5629                 matchdid.un.word = ndlp->nlp_DID;
5630                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
5631                     (mydid.un.b.area == ndlpdid.un.b.area)) {
5632                         if ((matchdid.un.b.domain == 0) &&
5633                             (matchdid.un.b.area == 0)) {
5634                                 if (matchdid.un.b.id)
5635                                         return 1;
5636                         }
5637                 }
5638         }
5639         return 0;
5640 }
5641
5642 /* Search for a nodelist entry */
5643 static struct lpfc_nodelist *
5644 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5645 {
5646         struct lpfc_nodelist *ndlp;
5647         uint32_t data1;
5648
5649         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5650                 if (lpfc_matchdid(vport, ndlp, did)) {
5651                         data1 = (((uint32_t)ndlp->nlp_state << 24) |
5652                                  ((uint32_t)ndlp->nlp_xri << 16) |
5653                                  ((uint32_t)ndlp->nlp_type << 8)
5654                                  );
5655                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5656                                          "0929 FIND node DID "
5657                                          "Data: x%px x%x x%x x%x x%x x%px\n",
5658                                          ndlp, ndlp->nlp_DID,
5659                                          ndlp->nlp_flag, data1, ndlp->nlp_rpi,
5660                                          ndlp->active_rrqs_xri_bitmap);
5661                         return ndlp;
5662                 }
5663         }
5664
5665         /* FIND node did <did> NOT FOUND */
5666         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5667                          "0932 FIND node did x%x NOT FOUND.\n", did);
5668         return NULL;
5669 }
5670
5671 struct lpfc_nodelist *
5672 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5673 {
5674         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5675         struct lpfc_nodelist *ndlp;
5676         unsigned long iflags;
5677
5678         spin_lock_irqsave(shost->host_lock, iflags);
5679         ndlp = __lpfc_findnode_did(vport, did);
5680         spin_unlock_irqrestore(shost->host_lock, iflags);
5681         return ndlp;
5682 }
5683
5684 struct lpfc_nodelist *
5685 lpfc_findnode_mapped(struct lpfc_vport *vport)
5686 {
5687         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5688         struct lpfc_nodelist *ndlp;
5689         uint32_t data1;
5690         unsigned long iflags;
5691
5692         spin_lock_irqsave(shost->host_lock, iflags);
5693
5694         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5695                 if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE ||
5696                     ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
5697                         data1 = (((uint32_t)ndlp->nlp_state << 24) |
5698                                  ((uint32_t)ndlp->nlp_xri << 16) |
5699                                  ((uint32_t)ndlp->nlp_type << 8) |
5700                                  ((uint32_t)ndlp->nlp_rpi & 0xff));
5701                         spin_unlock_irqrestore(shost->host_lock, iflags);
5702                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5703                                          "2025 FIND node DID "
5704                                          "Data: x%px x%x x%x x%x x%px\n",
5705                                          ndlp, ndlp->nlp_DID,
5706                                          ndlp->nlp_flag, data1,
5707                                          ndlp->active_rrqs_xri_bitmap);
5708                         return ndlp;
5709                 }
5710         }
5711         spin_unlock_irqrestore(shost->host_lock, iflags);
5712
5713         /* FIND node did <did> NOT FOUND */
5714         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5715                          "2026 FIND mapped did NOT FOUND.\n");
5716         return NULL;
5717 }
5718
5719 struct lpfc_nodelist *
5720 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
5721 {
5722         struct lpfc_nodelist *ndlp;
5723
5724         ndlp = lpfc_findnode_did(vport, did);
5725         if (!ndlp) {
5726                 if (vport->phba->nvmet_support)
5727                         return NULL;
5728                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
5729                     lpfc_rscn_payload_check(vport, did) == 0)
5730                         return NULL;
5731                 ndlp = lpfc_nlp_init(vport, did);
5732                 if (!ndlp)
5733                         return NULL;
5734                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5735
5736                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5737                                  "6453 Setup New Node 2B_DISC x%x "
5738                                  "Data:x%x x%x x%x\n",
5739                                  ndlp->nlp_DID, ndlp->nlp_flag,
5740                                  ndlp->nlp_state, vport->fc_flag);
5741
5742                 spin_lock_irq(&ndlp->lock);
5743                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5744                 spin_unlock_irq(&ndlp->lock);
5745                 return ndlp;
5746         }
5747
5748         /* The NVME Target does not want to actively manage an rport.
5749          * The goal is to allow the target to reset its state and clear
5750          * pending IO in preparation for the initiator to recover.
5751          */
5752         if ((vport->fc_flag & FC_RSCN_MODE) &&
5753             !(vport->fc_flag & FC_NDISC_ACTIVE)) {
5754                 if (lpfc_rscn_payload_check(vport, did)) {
5755
5756                         /* Since this node is marked for discovery,
5757                          * delay timeout is not needed.
5758                          */
5759                         lpfc_cancel_retry_delay_tmo(vport, ndlp);
5760
5761                         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5762                                          "6455 Setup RSCN Node 2B_DISC x%x "
5763                                          "Data:x%x x%x x%x\n",
5764                                          ndlp->nlp_DID, ndlp->nlp_flag,
5765                                          ndlp->nlp_state, vport->fc_flag);
5766
5767                         /* NVME Target mode waits until rport is known to be
5768                          * impacted by the RSCN before it transitions.  No
5769                          * active management - just go to NPR provided the
5770                          * node had a valid login.
5771                          */
5772                         if (vport->phba->nvmet_support)
5773                                 return ndlp;
5774
5775                         /* If we've already received a PLOGI from this NPort
5776                          * we don't need to try to discover it again.
5777                          */
5778                         if (ndlp->nlp_flag & NLP_RCV_PLOGI &&
5779                             !(ndlp->nlp_type &
5780                              (NLP_FCP_TARGET | NLP_NVME_TARGET)))
5781                                 return NULL;
5782
5783                         ndlp->nlp_prev_state = ndlp->nlp_state;
5784                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5785
5786                         spin_lock_irq(&ndlp->lock);
5787                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5788                         spin_unlock_irq(&ndlp->lock);
5789                 } else {
5790                         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5791                                          "6456 Skip Setup RSCN Node x%x "
5792                                          "Data:x%x x%x x%x\n",
5793                                          ndlp->nlp_DID, ndlp->nlp_flag,
5794                                          ndlp->nlp_state, vport->fc_flag);
5795                         ndlp = NULL;
5796                 }
5797         } else {
5798                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5799                                  "6457 Setup Active Node 2B_DISC x%x "
5800                                  "Data:x%x x%x x%x\n",
5801                                  ndlp->nlp_DID, ndlp->nlp_flag,
5802                                  ndlp->nlp_state, vport->fc_flag);
5803
5804                 /* If the initiator received a PLOGI from this NPort or if the
5805                  * initiator is already in the process of discovery on it,
5806                  * there's no need to try to discover it again.
5807                  */
5808                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
5809                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5810                     (!vport->phba->nvmet_support &&
5811                      ndlp->nlp_flag & NLP_RCV_PLOGI))
5812                         return NULL;
5813
5814                 if (vport->phba->nvmet_support)
5815                         return ndlp;
5816
5817                 /* Moving to NPR state clears unsolicited flags and
5818                  * allows for rediscovery
5819                  */
5820                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5821
5822                 spin_lock_irq(&ndlp->lock);
5823                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5824                 spin_unlock_irq(&ndlp->lock);
5825         }
5826         return ndlp;
5827 }
5828
5829 /* Build a list of nodes to discover based on the loopmap */
5830 void
5831 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
5832 {
5833         struct lpfc_hba  *phba = vport->phba;
5834         int j;
5835         uint32_t alpa, index;
5836
5837         if (!lpfc_is_link_up(phba))
5838                 return;
5839
5840         if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
5841                 return;
5842
5843         /* Check for loop map present or not */
5844         if (phba->alpa_map[0]) {
5845                 for (j = 1; j <= phba->alpa_map[0]; j++) {
5846                         alpa = phba->alpa_map[j];
5847                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
5848                                 continue;
5849                         lpfc_setup_disc_node(vport, alpa);
5850                 }
5851         } else {
5852                 /* No alpamap, so try all alpa's */
5853                 for (j = 0; j < FC_MAXLOOP; j++) {
5854                         /* If cfg_scan_down is set, start from highest
5855                          * ALPA (0xef) to lowest (0x1).
5856                          */
5857                         if (vport->cfg_scan_down)
5858                                 index = j;
5859                         else
5860                                 index = FC_MAXLOOP - j - 1;
5861                         alpa = lpfcAlpaArray[index];
5862                         if ((vport->fc_myDID & 0xff) == alpa)
5863                                 continue;
5864                         lpfc_setup_disc_node(vport, alpa);
5865                 }
5866         }
5867         return;
5868 }
5869
5870 /* SLI3 only */
5871 void
5872 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
5873 {
5874         LPFC_MBOXQ_t *mbox;
5875         struct lpfc_sli *psli = &phba->sli;
5876         struct lpfc_sli_ring *extra_ring = &psli->sli3_ring[LPFC_EXTRA_RING];
5877         struct lpfc_sli_ring *fcp_ring   = &psli->sli3_ring[LPFC_FCP_RING];
5878         int  rc;
5879
5880         /*
5881          * if it's not a physical port or if we already send
5882          * clear_la then don't send it.
5883          */
5884         if ((phba->link_state >= LPFC_CLEAR_LA) ||
5885             (vport->port_type != LPFC_PHYSICAL_PORT) ||
5886                 (phba->sli_rev == LPFC_SLI_REV4))
5887                 return;
5888
5889                         /* Link up discovery */
5890         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
5891                 phba->link_state = LPFC_CLEAR_LA;
5892                 lpfc_clear_la(phba, mbox);
5893                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
5894                 mbox->vport = vport;
5895                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5896                 if (rc == MBX_NOT_FINISHED) {
5897                         mempool_free(mbox, phba->mbox_mem_pool);
5898                         lpfc_disc_flush_list(vport);
5899                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5900                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5901                         phba->link_state = LPFC_HBA_ERROR;
5902                 }
5903         }
5904 }
5905
5906 /* Reg_vpi to tell firmware to resume normal operations */
5907 void
5908 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
5909 {
5910         LPFC_MBOXQ_t *regvpimbox;
5911
5912         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5913         if (regvpimbox) {
5914                 lpfc_reg_vpi(vport, regvpimbox);
5915                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
5916                 regvpimbox->vport = vport;
5917                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
5918                                         == MBX_NOT_FINISHED) {
5919                         mempool_free(regvpimbox, phba->mbox_mem_pool);
5920                 }
5921         }
5922 }
5923
5924 /* Start Link up / RSCN discovery on NPR nodes */
5925 void
5926 lpfc_disc_start(struct lpfc_vport *vport)
5927 {
5928         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5929         struct lpfc_hba  *phba = vport->phba;
5930         uint32_t num_sent;
5931         uint32_t clear_la_pending;
5932
5933         if (!lpfc_is_link_up(phba)) {
5934                 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
5935                                  "3315 Link is not up %x\n",
5936                                  phba->link_state);
5937                 return;
5938         }
5939
5940         if (phba->link_state == LPFC_CLEAR_LA)
5941                 clear_la_pending = 1;
5942         else
5943                 clear_la_pending = 0;
5944
5945         if (vport->port_state < LPFC_VPORT_READY)
5946                 vport->port_state = LPFC_DISC_AUTH;
5947
5948         lpfc_set_disctmo(vport);
5949
5950         vport->fc_prevDID = vport->fc_myDID;
5951         vport->num_disc_nodes = 0;
5952
5953         /* Start Discovery state <hba_state> */
5954         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5955                          "0202 Start Discovery port state x%x "
5956                          "flg x%x Data: x%x x%x x%x\n",
5957                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
5958                          vport->fc_adisc_cnt, vport->fc_npr_cnt);
5959
5960         /* First do ADISCs - if any */
5961         num_sent = lpfc_els_disc_adisc(vport);
5962
5963         if (num_sent)
5964                 return;
5965
5966         /* Register the VPI for SLI3, NPIV only. */
5967         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
5968             !(vport->fc_flag & FC_PT2PT) &&
5969             !(vport->fc_flag & FC_RSCN_MODE) &&
5970             (phba->sli_rev < LPFC_SLI_REV4)) {
5971                 lpfc_issue_clear_la(phba, vport);
5972                 lpfc_issue_reg_vpi(phba, vport);
5973                 return;
5974         }
5975
5976         /*
5977          * For SLI2, we need to set port_state to READY and continue
5978          * discovery.
5979          */
5980         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
5981                 /* If we get here, there is nothing to ADISC */
5982                 lpfc_issue_clear_la(phba, vport);
5983
5984                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
5985                         vport->num_disc_nodes = 0;
5986                         /* go thru NPR nodes and issue ELS PLOGIs */
5987                         if (vport->fc_npr_cnt)
5988                                 lpfc_els_disc_plogi(vport);
5989
5990                         if (!vport->num_disc_nodes) {
5991                                 spin_lock_irq(shost->host_lock);
5992                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
5993                                 spin_unlock_irq(shost->host_lock);
5994                                 lpfc_can_disctmo(vport);
5995                         }
5996                 }
5997                 vport->port_state = LPFC_VPORT_READY;
5998         } else {
5999                 /* Next do PLOGIs - if any */
6000                 num_sent = lpfc_els_disc_plogi(vport);
6001
6002                 if (num_sent)
6003                         return;
6004
6005                 if (vport->fc_flag & FC_RSCN_MODE) {
6006                         /* Check to see if more RSCNs came in while we
6007                          * were processing this one.
6008                          */
6009                         if ((vport->fc_rscn_id_cnt == 0) &&
6010                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
6011                                 spin_lock_irq(shost->host_lock);
6012                                 vport->fc_flag &= ~FC_RSCN_MODE;
6013                                 spin_unlock_irq(shost->host_lock);
6014                                 lpfc_can_disctmo(vport);
6015                         } else
6016                                 lpfc_els_handle_rscn(vport);
6017                 }
6018         }
6019         return;
6020 }
6021
6022 /*
6023  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
6024  *  ring the match the sppecified nodelist.
6025  */
6026 static void
6027 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
6028 {
6029         LIST_HEAD(completions);
6030         IOCB_t     *icmd;
6031         struct lpfc_iocbq    *iocb, *next_iocb;
6032         struct lpfc_sli_ring *pring;
6033
6034         pring = lpfc_phba_elsring(phba);
6035         if (unlikely(!pring))
6036                 return;
6037
6038         /* Error matching iocb on txq or txcmplq
6039          * First check the txq.
6040          */
6041         spin_lock_irq(&phba->hbalock);
6042         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
6043                 if (iocb->context1 != ndlp) {
6044                         continue;
6045                 }
6046                 icmd = &iocb->iocb;
6047                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
6048                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
6049
6050                         list_move_tail(&iocb->list, &completions);
6051                 }
6052         }
6053
6054         /* Next check the txcmplq */
6055         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
6056                 if (iocb->context1 != ndlp) {
6057                         continue;
6058                 }
6059                 icmd = &iocb->iocb;
6060                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
6061                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
6062                         lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL);
6063                 }
6064         }
6065         spin_unlock_irq(&phba->hbalock);
6066
6067         /* Make sure HBA is alive */
6068         lpfc_issue_hb_tmo(phba);
6069
6070         /* Cancel all the IOCBs from the completions list */
6071         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
6072                               IOERR_SLI_ABORTED);
6073 }
6074
6075 static void
6076 lpfc_disc_flush_list(struct lpfc_vport *vport)
6077 {
6078         struct lpfc_nodelist *ndlp, *next_ndlp;
6079         struct lpfc_hba *phba = vport->phba;
6080
6081         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
6082                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6083                                          nlp_listp) {
6084                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
6085                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
6086                                 lpfc_free_tx(phba, ndlp);
6087                         }
6088                 }
6089         }
6090 }
6091
6092 void
6093 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
6094 {
6095         lpfc_els_flush_rscn(vport);
6096         lpfc_els_flush_cmd(vport);
6097         lpfc_disc_flush_list(vport);
6098 }
6099
6100 /*****************************************************************************/
6101 /*
6102  * NAME:     lpfc_disc_timeout
6103  *
6104  * FUNCTION: Fibre Channel driver discovery timeout routine.
6105  *
6106  * EXECUTION ENVIRONMENT: interrupt only
6107  *
6108  * CALLED FROM:
6109  *      Timer function
6110  *
6111  * RETURNS:
6112  *      none
6113  */
6114 /*****************************************************************************/
6115 void
6116 lpfc_disc_timeout(struct timer_list *t)
6117 {
6118         struct lpfc_vport *vport = from_timer(vport, t, fc_disctmo);
6119         struct lpfc_hba   *phba = vport->phba;
6120         uint32_t tmo_posted;
6121         unsigned long flags = 0;
6122
6123         if (unlikely(!phba))
6124                 return;
6125
6126         spin_lock_irqsave(&vport->work_port_lock, flags);
6127         tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
6128         if (!tmo_posted)
6129                 vport->work_port_events |= WORKER_DISC_TMO;
6130         spin_unlock_irqrestore(&vport->work_port_lock, flags);
6131
6132         if (!tmo_posted)
6133                 lpfc_worker_wake_up(phba);
6134         return;
6135 }
6136
6137 static void
6138 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
6139 {
6140         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6141         struct lpfc_hba  *phba = vport->phba;
6142         struct lpfc_sli  *psli = &phba->sli;
6143         struct lpfc_nodelist *ndlp, *next_ndlp;
6144         LPFC_MBOXQ_t *initlinkmbox;
6145         int rc, clrlaerr = 0;
6146
6147         if (!(vport->fc_flag & FC_DISC_TMO))
6148                 return;
6149
6150         spin_lock_irq(shost->host_lock);
6151         vport->fc_flag &= ~FC_DISC_TMO;
6152         spin_unlock_irq(shost->host_lock);
6153
6154         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6155                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
6156                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
6157
6158         switch (vport->port_state) {
6159
6160         case LPFC_LOCAL_CFG_LINK:
6161                 /*
6162                  * port_state is identically  LPFC_LOCAL_CFG_LINK while
6163                  * waiting for FAN timeout
6164                  */
6165                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
6166                                  "0221 FAN timeout\n");
6167
6168                 /* Start discovery by sending FLOGI, clean up old rpis */
6169                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6170                                          nlp_listp) {
6171                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
6172                                 continue;
6173                         if (ndlp->nlp_type & NLP_FABRIC) {
6174                                 /* Clean up the ndlp on Fabric connections */
6175                                 lpfc_drop_node(vport, ndlp);
6176
6177                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
6178                                 /* Fail outstanding IO now since device
6179                                  * is marked for PLOGI.
6180                                  */
6181                                 lpfc_unreg_rpi(vport, ndlp);
6182                         }
6183                 }
6184                 if (vport->port_state != LPFC_FLOGI) {
6185                         if (phba->sli_rev <= LPFC_SLI_REV3)
6186                                 lpfc_initial_flogi(vport);
6187                         else
6188                                 lpfc_issue_init_vfi(vport);
6189                         return;
6190                 }
6191                 break;
6192
6193         case LPFC_FDISC:
6194         case LPFC_FLOGI:
6195         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
6196                 /* Initial FLOGI timeout */
6197                 lpfc_printf_vlog(vport, KERN_ERR,
6198                                  LOG_TRACE_EVENT,
6199                                  "0222 Initial %s timeout\n",
6200                                  vport->vpi ? "FDISC" : "FLOGI");
6201
6202                 /* Assume no Fabric and go on with discovery.
6203                  * Check for outstanding ELS FLOGI to abort.
6204                  */
6205
6206                 /* FLOGI failed, so just use loop map to make discovery list */
6207                 lpfc_disc_list_loopmap(vport);
6208
6209                 /* Start discovery */
6210                 lpfc_disc_start(vport);
6211                 break;
6212
6213         case LPFC_FABRIC_CFG_LINK:
6214         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
6215            NameServer login */
6216                 lpfc_printf_vlog(vport, KERN_ERR,
6217                                  LOG_TRACE_EVENT,
6218                                  "0223 Timeout while waiting for "
6219                                  "NameServer login\n");
6220                 /* Next look for NameServer ndlp */
6221                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
6222                 if (ndlp)
6223                         lpfc_els_abort(phba, ndlp);
6224
6225                 /* ReStart discovery */
6226                 goto restart_disc;
6227
6228         case LPFC_NS_QRY:
6229         /* Check for wait for NameServer Rsp timeout */
6230                 lpfc_printf_vlog(vport, KERN_ERR,
6231                                  LOG_TRACE_EVENT,
6232                                  "0224 NameServer Query timeout "
6233                                  "Data: x%x x%x\n",
6234                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
6235
6236                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
6237                         /* Try it one more time */
6238                         vport->fc_ns_retry++;
6239                         vport->gidft_inp = 0;
6240                         rc = lpfc_issue_gidft(vport);
6241                         if (rc == 0)
6242                                 break;
6243                 }
6244                 vport->fc_ns_retry = 0;
6245
6246 restart_disc:
6247                 /*
6248                  * Discovery is over.
6249                  * set port_state to PORT_READY if SLI2.
6250                  * cmpl_reg_vpi will set port_state to READY for SLI3.
6251                  */
6252                 if (phba->sli_rev < LPFC_SLI_REV4) {
6253                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
6254                                 lpfc_issue_reg_vpi(phba, vport);
6255                         else  {
6256                                 lpfc_issue_clear_la(phba, vport);
6257                                 vport->port_state = LPFC_VPORT_READY;
6258                         }
6259                 }
6260
6261                 /* Setup and issue mailbox INITIALIZE LINK command */
6262                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6263                 if (!initlinkmbox) {
6264                         lpfc_printf_vlog(vport, KERN_ERR,
6265                                          LOG_TRACE_EVENT,
6266                                          "0206 Device Discovery "
6267                                          "completion error\n");
6268                         phba->link_state = LPFC_HBA_ERROR;
6269                         break;
6270                 }
6271
6272                 lpfc_linkdown(phba);
6273                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
6274                                phba->cfg_link_speed);
6275                 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
6276                 initlinkmbox->vport = vport;
6277                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
6278                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
6279                 lpfc_set_loopback_flag(phba);
6280                 if (rc == MBX_NOT_FINISHED)
6281                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
6282
6283                 break;
6284
6285         case LPFC_DISC_AUTH:
6286         /* Node Authentication timeout */
6287                 lpfc_printf_vlog(vport, KERN_ERR,
6288                                  LOG_TRACE_EVENT,
6289                                  "0227 Node Authentication timeout\n");
6290                 lpfc_disc_flush_list(vport);
6291
6292                 /*
6293                  * set port_state to PORT_READY if SLI2.
6294                  * cmpl_reg_vpi will set port_state to READY for SLI3.
6295                  */
6296                 if (phba->sli_rev < LPFC_SLI_REV4) {
6297                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
6298                                 lpfc_issue_reg_vpi(phba, vport);
6299                         else  { /* NPIV Not enabled */
6300                                 lpfc_issue_clear_la(phba, vport);
6301                                 vport->port_state = LPFC_VPORT_READY;
6302                         }
6303                 }
6304                 break;
6305
6306         case LPFC_VPORT_READY:
6307                 if (vport->fc_flag & FC_RSCN_MODE) {
6308                         lpfc_printf_vlog(vport, KERN_ERR,
6309                                          LOG_TRACE_EVENT,
6310                                          "0231 RSCN timeout Data: x%x "
6311                                          "x%x\n",
6312                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
6313
6314                         /* Cleanup any outstanding ELS commands */
6315                         lpfc_els_flush_cmd(vport);
6316
6317                         lpfc_els_flush_rscn(vport);
6318                         lpfc_disc_flush_list(vport);
6319                 }
6320                 break;
6321
6322         default:
6323                 lpfc_printf_vlog(vport, KERN_ERR,
6324                                  LOG_TRACE_EVENT,
6325                                  "0273 Unexpected discovery timeout, "
6326                                  "vport State x%x\n", vport->port_state);
6327                 break;
6328         }
6329
6330         switch (phba->link_state) {
6331         case LPFC_CLEAR_LA:
6332                                 /* CLEAR LA timeout */
6333                 lpfc_printf_vlog(vport, KERN_ERR,
6334                                  LOG_TRACE_EVENT,
6335                                  "0228 CLEAR LA timeout\n");
6336                 clrlaerr = 1;
6337                 break;
6338
6339         case LPFC_LINK_UP:
6340                 lpfc_issue_clear_la(phba, vport);
6341                 fallthrough;
6342         case LPFC_LINK_UNKNOWN:
6343         case LPFC_WARM_START:
6344         case LPFC_INIT_START:
6345         case LPFC_INIT_MBX_CMDS:
6346         case LPFC_LINK_DOWN:
6347         case LPFC_HBA_ERROR:
6348                 lpfc_printf_vlog(vport, KERN_ERR,
6349                                  LOG_TRACE_EVENT,
6350                                  "0230 Unexpected timeout, hba link "
6351                                  "state x%x\n", phba->link_state);
6352                 clrlaerr = 1;
6353                 break;
6354
6355         case LPFC_HBA_READY:
6356                 break;
6357         }
6358
6359         if (clrlaerr) {
6360                 lpfc_disc_flush_list(vport);
6361                 if (phba->sli_rev != LPFC_SLI_REV4) {
6362                         psli->sli3_ring[(LPFC_EXTRA_RING)].flag &=
6363                                 ~LPFC_STOP_IOCB_EVENT;
6364                         psli->sli3_ring[LPFC_FCP_RING].flag &=
6365                                 ~LPFC_STOP_IOCB_EVENT;
6366                 }
6367                 vport->port_state = LPFC_VPORT_READY;
6368         }
6369         return;
6370 }
6371
6372 /*
6373  * This routine handles processing a NameServer REG_LOGIN mailbox
6374  * command upon completion. It is setup in the LPFC_MBOXQ
6375  * as the completion routine when the command is
6376  * handed off to the SLI layer.
6377  */
6378 void
6379 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
6380 {
6381         MAILBOX_t *mb = &pmb->u.mb;
6382         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
6383         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
6384         struct lpfc_vport    *vport = pmb->vport;
6385
6386         pmb->ctx_buf = NULL;
6387         pmb->ctx_ndlp = NULL;
6388
6389         if (phba->sli_rev < LPFC_SLI_REV4)
6390                 ndlp->nlp_rpi = mb->un.varWords[0];
6391         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
6392         ndlp->nlp_type |= NLP_FABRIC;
6393         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
6394         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
6395                          "0004 rpi:%x DID:%x flg:%x %d x%px\n",
6396                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
6397                          kref_read(&ndlp->kref),
6398                          ndlp);
6399         /*
6400          * Start issuing Fabric-Device Management Interface (FDMI) command to
6401          * 0xfffffa (FDMI well known port).
6402          * DHBA -> DPRT -> RHBA -> RPA  (physical port)
6403          * DPRT -> RPRT (vports)
6404          */
6405         if (vport->port_type == LPFC_PHYSICAL_PORT) {
6406                 phba->link_flag &= ~LS_CT_VEN_RPA; /* For extra Vendor RPA */
6407                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA, 0);
6408         } else {
6409                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DPRT, 0);
6410         }
6411
6412
6413         /* decrement the node reference count held for this callback
6414          * function.
6415          */
6416         lpfc_nlp_put(ndlp);
6417         lpfc_mbuf_free(phba, mp->virt, mp->phys);
6418         kfree(mp);
6419         mempool_free(pmb, phba->mbox_mem_pool);
6420
6421         return;
6422 }
6423
6424 static int
6425 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
6426 {
6427         uint16_t *rpi = param;
6428
6429         return ndlp->nlp_rpi == *rpi;
6430 }
6431
6432 static int
6433 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
6434 {
6435         return memcmp(&ndlp->nlp_portname, param,
6436                       sizeof(ndlp->nlp_portname)) == 0;
6437 }
6438
6439 static struct lpfc_nodelist *
6440 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
6441 {
6442         struct lpfc_nodelist *ndlp;
6443
6444         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
6445                 if (filter(ndlp, param)) {
6446                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6447                                          "3185 FIND node filter %ps DID "
6448                                          "ndlp x%px did x%x flg x%x st x%x "
6449                                          "xri x%x type x%x rpi x%x\n",
6450                                          filter, ndlp, ndlp->nlp_DID,
6451                                          ndlp->nlp_flag, ndlp->nlp_state,
6452                                          ndlp->nlp_xri, ndlp->nlp_type,
6453                                          ndlp->nlp_rpi);
6454                         return ndlp;
6455                 }
6456         }
6457         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6458                          "3186 FIND node filter %ps NOT FOUND.\n", filter);
6459         return NULL;
6460 }
6461
6462 /*
6463  * This routine looks up the ndlp lists for the given RPI. If rpi found it
6464  * returns the node list element pointer else return NULL.
6465  */
6466 struct lpfc_nodelist *
6467 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6468 {
6469         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
6470 }
6471
6472 /*
6473  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
6474  * returns the node element list pointer else return NULL.
6475  */
6476 struct lpfc_nodelist *
6477 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
6478 {
6479         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6480         struct lpfc_nodelist *ndlp;
6481
6482         spin_lock_irq(shost->host_lock);
6483         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
6484         spin_unlock_irq(shost->host_lock);
6485         return ndlp;
6486 }
6487
6488 /*
6489  * This routine looks up the ndlp lists for the given RPI. If the rpi
6490  * is found, the routine returns the node element list pointer else
6491  * return NULL.
6492  */
6493 struct lpfc_nodelist *
6494 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6495 {
6496         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6497         struct lpfc_nodelist *ndlp;
6498         unsigned long flags;
6499
6500         spin_lock_irqsave(shost->host_lock, flags);
6501         ndlp = __lpfc_findnode_rpi(vport, rpi);
6502         spin_unlock_irqrestore(shost->host_lock, flags);
6503         return ndlp;
6504 }
6505
6506 /**
6507  * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
6508  * @phba: pointer to lpfc hba data structure.
6509  * @vpi: the physical host virtual N_Port identifier.
6510  *
6511  * This routine finds a vport on a HBA (referred by @phba) through a
6512  * @vpi. The function walks the HBA's vport list and returns the address
6513  * of the vport with the matching @vpi.
6514  *
6515  * Return code
6516  *    NULL - No vport with the matching @vpi found
6517  *    Otherwise - Address to the vport with the matching @vpi.
6518  **/
6519 struct lpfc_vport *
6520 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
6521 {
6522         struct lpfc_vport *vport;
6523         unsigned long flags;
6524         int i = 0;
6525
6526         /* The physical ports are always vpi 0 - translate is unnecessary. */
6527         if (vpi > 0) {
6528                 /*
6529                  * Translate the physical vpi to the logical vpi.  The
6530                  * vport stores the logical vpi.
6531                  */
6532                 for (i = 0; i <= phba->max_vpi; i++) {
6533                         if (vpi == phba->vpi_ids[i])
6534                                 break;
6535                 }
6536
6537                 if (i > phba->max_vpi) {
6538                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6539                                         "2936 Could not find Vport mapped "
6540                                         "to vpi %d\n", vpi);
6541                         return NULL;
6542                 }
6543         }
6544
6545         spin_lock_irqsave(&phba->port_list_lock, flags);
6546         list_for_each_entry(vport, &phba->port_list, listentry) {
6547                 if (vport->vpi == i) {
6548                         spin_unlock_irqrestore(&phba->port_list_lock, flags);
6549                         return vport;
6550                 }
6551         }
6552         spin_unlock_irqrestore(&phba->port_list_lock, flags);
6553         return NULL;
6554 }
6555
6556 struct lpfc_nodelist *
6557 lpfc_nlp_init(struct lpfc_vport *vport, uint32_t did)
6558 {
6559         struct lpfc_nodelist *ndlp;
6560         int rpi = LPFC_RPI_ALLOC_ERROR;
6561
6562         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6563                 rpi = lpfc_sli4_alloc_rpi(vport->phba);
6564                 if (rpi == LPFC_RPI_ALLOC_ERROR)
6565                         return NULL;
6566         }
6567
6568         ndlp = mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
6569         if (!ndlp) {
6570                 if (vport->phba->sli_rev == LPFC_SLI_REV4)
6571                         lpfc_sli4_free_rpi(vport->phba, rpi);
6572                 return NULL;
6573         }
6574
6575         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
6576
6577         spin_lock_init(&ndlp->lock);
6578
6579         lpfc_initialize_node(vport, ndlp, did);
6580         INIT_LIST_HEAD(&ndlp->nlp_listp);
6581         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6582                 ndlp->nlp_rpi = rpi;
6583                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
6584                                  "0007 Init New ndlp x%px, rpi:x%x DID:%x "
6585                                  "flg:x%x refcnt:%d\n",
6586                                  ndlp, ndlp->nlp_rpi, ndlp->nlp_DID,
6587                                  ndlp->nlp_flag, kref_read(&ndlp->kref));
6588
6589                 ndlp->active_rrqs_xri_bitmap =
6590                                 mempool_alloc(vport->phba->active_rrq_pool,
6591                                               GFP_KERNEL);
6592                 if (ndlp->active_rrqs_xri_bitmap)
6593                         memset(ndlp->active_rrqs_xri_bitmap, 0,
6594                                ndlp->phba->cfg_rrq_xri_bitmap_sz);
6595         }
6596
6597
6598
6599         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
6600                 "node init:       did:x%x",
6601                 ndlp->nlp_DID, 0, 0);
6602
6603         return ndlp;
6604 }
6605
6606 /* This routine releases all resources associated with a specifc NPort's ndlp
6607  * and mempool_free's the nodelist.
6608  */
6609 static void
6610 lpfc_nlp_release(struct kref *kref)
6611 {
6612         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
6613                                                   kref);
6614         struct lpfc_vport *vport = ndlp->vport;
6615
6616         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6617                 "node release:    did:x%x flg:x%x type:x%x",
6618                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
6619
6620         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6621                          "0279 %s: ndlp: x%px did %x refcnt:%d rpi:%x\n",
6622                          __func__, ndlp, ndlp->nlp_DID,
6623                          kref_read(&ndlp->kref), ndlp->nlp_rpi);
6624
6625         /* remove ndlp from action. */
6626         lpfc_cancel_retry_delay_tmo(vport, ndlp);
6627         lpfc_cleanup_node(vport, ndlp);
6628
6629         /* Not all ELS transactions have registered the RPI with the port.
6630          * In these cases the rpi usage is temporary and the node is
6631          * released when the WQE is completed.  Catch this case to free the
6632          * RPI to the pool.  Because this node is in the release path, a lock
6633          * is unnecessary.  All references are gone and the node has been
6634          * dequeued.
6635          */
6636         if (ndlp->nlp_flag & NLP_RELEASE_RPI) {
6637                 if (ndlp->nlp_rpi != LPFC_RPI_ALLOC_ERROR &&
6638                     !(ndlp->nlp_flag & (NLP_RPI_REGISTERED | NLP_UNREG_INP))) {
6639                         lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi);
6640                         ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
6641                 }
6642         }
6643
6644         /* The node is not freed back to memory, it is released to a pool so
6645          * the node fields need to be cleaned up.
6646          */
6647         ndlp->vport = NULL;
6648         ndlp->nlp_state = NLP_STE_FREED_NODE;
6649         ndlp->nlp_flag = 0;
6650         ndlp->fc4_xpt_flags = 0;
6651
6652         /* free ndlp memory for final ndlp release */
6653         kfree(ndlp->lat_data);
6654         if (ndlp->phba->sli_rev == LPFC_SLI_REV4)
6655                 mempool_free(ndlp->active_rrqs_xri_bitmap,
6656                                 ndlp->phba->active_rrq_pool);
6657         mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
6658 }
6659
6660 /* This routine bumps the reference count for a ndlp structure to ensure
6661  * that one discovery thread won't free a ndlp while another discovery thread
6662  * is using it.
6663  */
6664 struct lpfc_nodelist *
6665 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
6666 {
6667         unsigned long flags;
6668
6669         if (ndlp) {
6670                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6671                         "node get:        did:x%x flg:x%x refcnt:x%x",
6672                         ndlp->nlp_DID, ndlp->nlp_flag,
6673                         kref_read(&ndlp->kref));
6674
6675                 /* The check of ndlp usage to prevent incrementing the
6676                  * ndlp reference count that is in the process of being
6677                  * released.
6678                  */
6679                 spin_lock_irqsave(&ndlp->lock, flags);
6680                 if (!kref_get_unless_zero(&ndlp->kref)) {
6681                         spin_unlock_irqrestore(&ndlp->lock, flags);
6682                         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
6683                                 "0276 %s: ndlp:x%px refcnt:%d\n",
6684                                 __func__, (void *)ndlp, kref_read(&ndlp->kref));
6685                         return NULL;
6686                 }
6687                 spin_unlock_irqrestore(&ndlp->lock, flags);
6688         } else {
6689                 WARN_ONCE(!ndlp, "**** %s, get ref on NULL ndlp!", __func__);
6690         }
6691
6692         return ndlp;
6693 }
6694
6695 /* This routine decrements the reference count for a ndlp structure. If the
6696  * count goes to 0, this indicates the associated nodelist should be freed.
6697  */
6698 int
6699 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
6700 {
6701         if (ndlp) {
6702                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6703                                 "node put:        did:x%x flg:x%x refcnt:x%x",
6704                                 ndlp->nlp_DID, ndlp->nlp_flag,
6705                                 kref_read(&ndlp->kref));
6706         } else {
6707                 WARN_ONCE(!ndlp, "**** %s, put ref on NULL ndlp!", __func__);
6708         }
6709
6710         return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0;
6711 }
6712
6713 /* This routine free's the specified nodelist if it is not in use
6714  * by any other discovery thread. This routine returns 1 if the
6715  * ndlp has been freed. A return value of 0 indicates the ndlp is
6716  * not yet been released.
6717  */
6718 int
6719 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
6720 {
6721         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6722                 "node not used:   did:x%x flg:x%x refcnt:x%x",
6723                 ndlp->nlp_DID, ndlp->nlp_flag,
6724                 kref_read(&ndlp->kref));
6725
6726         if (kref_read(&ndlp->kref) == 1)
6727                 if (lpfc_nlp_put(ndlp))
6728                         return 1;
6729         return 0;
6730 }
6731
6732 /**
6733  * lpfc_fcf_inuse - Check if FCF can be unregistered.
6734  * @phba: Pointer to hba context object.
6735  *
6736  * This function iterate through all FC nodes associated
6737  * will all vports to check if there is any node with
6738  * fc_rports associated with it. If there is an fc_rport
6739  * associated with the node, then the node is either in
6740  * discovered state or its devloss_timer is pending.
6741  */
6742 static int
6743 lpfc_fcf_inuse(struct lpfc_hba *phba)
6744 {
6745         struct lpfc_vport **vports;
6746         int i, ret = 0;
6747         struct lpfc_nodelist *ndlp;
6748         struct Scsi_Host  *shost;
6749
6750         vports = lpfc_create_vport_work_array(phba);
6751
6752         /* If driver cannot allocate memory, indicate fcf is in use */
6753         if (!vports)
6754                 return 1;
6755
6756         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6757                 shost = lpfc_shost_from_vport(vports[i]);
6758                 spin_lock_irq(shost->host_lock);
6759                 /*
6760                  * IF the CVL_RCVD bit is not set then we have sent the
6761                  * flogi.
6762                  * If dev_loss fires while we are waiting we do not want to
6763                  * unreg the fcf.
6764                  */
6765                 if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) {
6766                         spin_unlock_irq(shost->host_lock);
6767                         ret =  1;
6768                         goto out;
6769                 }
6770                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
6771                         if (ndlp->rport &&
6772                           (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
6773                                 ret = 1;
6774                                 spin_unlock_irq(shost->host_lock);
6775                                 goto out;
6776                         } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
6777                                 ret = 1;
6778                                 lpfc_printf_log(phba, KERN_INFO,
6779                                                 LOG_NODE | LOG_DISCOVERY,
6780                                                 "2624 RPI %x DID %x flag %x "
6781                                                 "still logged in\n",
6782                                                 ndlp->nlp_rpi, ndlp->nlp_DID,
6783                                                 ndlp->nlp_flag);
6784                         }
6785                 }
6786                 spin_unlock_irq(shost->host_lock);
6787         }
6788 out:
6789         lpfc_destroy_vport_work_array(phba, vports);
6790         return ret;
6791 }
6792
6793 /**
6794  * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
6795  * @phba: Pointer to hba context object.
6796  * @mboxq: Pointer to mailbox object.
6797  *
6798  * This function frees memory associated with the mailbox command.
6799  */
6800 void
6801 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6802 {
6803         struct lpfc_vport *vport = mboxq->vport;
6804         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6805
6806         if (mboxq->u.mb.mbxStatus) {
6807                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6808                                 "2555 UNREG_VFI mbxStatus error x%x "
6809                                 "HBA state x%x\n",
6810                                 mboxq->u.mb.mbxStatus, vport->port_state);
6811         }
6812         spin_lock_irq(shost->host_lock);
6813         phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
6814         spin_unlock_irq(shost->host_lock);
6815         mempool_free(mboxq, phba->mbox_mem_pool);
6816         return;
6817 }
6818
6819 /**
6820  * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
6821  * @phba: Pointer to hba context object.
6822  * @mboxq: Pointer to mailbox object.
6823  *
6824  * This function frees memory associated with the mailbox command.
6825  */
6826 static void
6827 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6828 {
6829         struct lpfc_vport *vport = mboxq->vport;
6830
6831         if (mboxq->u.mb.mbxStatus) {
6832                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6833                                 "2550 UNREG_FCFI mbxStatus error x%x "
6834                                 "HBA state x%x\n",
6835                                 mboxq->u.mb.mbxStatus, vport->port_state);
6836         }
6837         mempool_free(mboxq, phba->mbox_mem_pool);
6838         return;
6839 }
6840
6841 /**
6842  * lpfc_unregister_fcf_prep - Unregister fcf record preparation
6843  * @phba: Pointer to hba context object.
6844  *
6845  * This function prepare the HBA for unregistering the currently registered
6846  * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
6847  * VFIs.
6848  */
6849 int
6850 lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
6851 {
6852         struct lpfc_vport **vports;
6853         struct lpfc_nodelist *ndlp;
6854         struct Scsi_Host *shost;
6855         int i = 0, rc;
6856
6857         /* Unregister RPIs */
6858         if (lpfc_fcf_inuse(phba))
6859                 lpfc_unreg_hba_rpis(phba);
6860
6861         /* At this point, all discovery is aborted */
6862         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
6863
6864         /* Unregister VPIs */
6865         vports = lpfc_create_vport_work_array(phba);
6866         if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
6867                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6868                         /* Stop FLOGI/FDISC retries */
6869                         ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
6870                         if (ndlp)
6871                                 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
6872                         lpfc_cleanup_pending_mbox(vports[i]);
6873                         if (phba->sli_rev == LPFC_SLI_REV4)
6874                                 lpfc_sli4_unreg_all_rpis(vports[i]);
6875                         lpfc_mbx_unreg_vpi(vports[i]);
6876                         shost = lpfc_shost_from_vport(vports[i]);
6877                         spin_lock_irq(shost->host_lock);
6878                         vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6879                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
6880                         spin_unlock_irq(shost->host_lock);
6881                 }
6882         lpfc_destroy_vport_work_array(phba, vports);
6883         if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) {
6884                 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
6885                 if (ndlp)
6886                         lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
6887                 lpfc_cleanup_pending_mbox(phba->pport);
6888                 if (phba->sli_rev == LPFC_SLI_REV4)
6889                         lpfc_sli4_unreg_all_rpis(phba->pport);
6890                 lpfc_mbx_unreg_vpi(phba->pport);
6891                 shost = lpfc_shost_from_vport(phba->pport);
6892                 spin_lock_irq(shost->host_lock);
6893                 phba->pport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6894                 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED;
6895                 spin_unlock_irq(shost->host_lock);
6896         }
6897
6898         /* Cleanup any outstanding ELS commands */
6899         lpfc_els_flush_all_cmd(phba);
6900
6901         /* Unregister the physical port VFI */
6902         rc = lpfc_issue_unreg_vfi(phba->pport);
6903         return rc;
6904 }
6905
6906 /**
6907  * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
6908  * @phba: Pointer to hba context object.
6909  *
6910  * This function issues synchronous unregister FCF mailbox command to HBA to
6911  * unregister the currently registered FCF record. The driver does not reset
6912  * the driver FCF usage state flags.
6913  *
6914  * Return 0 if successfully issued, none-zero otherwise.
6915  */
6916 int
6917 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
6918 {
6919         LPFC_MBOXQ_t *mbox;
6920         int rc;
6921
6922         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6923         if (!mbox) {
6924                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6925                                 "2551 UNREG_FCFI mbox allocation failed"
6926                                 "HBA state x%x\n", phba->pport->port_state);
6927                 return -ENOMEM;
6928         }
6929         lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
6930         mbox->vport = phba->pport;
6931         mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
6932         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
6933
6934         if (rc == MBX_NOT_FINISHED) {
6935                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6936                                 "2552 Unregister FCFI command failed rc x%x "
6937                                 "HBA state x%x\n",
6938                                 rc, phba->pport->port_state);
6939                 return -EINVAL;
6940         }
6941         return 0;
6942 }
6943
6944 /**
6945  * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
6946  * @phba: Pointer to hba context object.
6947  *
6948  * This function unregisters the currently reigstered FCF. This function
6949  * also tries to find another FCF for discovery by rescan the HBA FCF table.
6950  */
6951 void
6952 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
6953 {
6954         int rc;
6955
6956         /* Preparation for unregistering fcf */
6957         rc = lpfc_unregister_fcf_prep(phba);
6958         if (rc) {
6959                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6960                                 "2748 Failed to prepare for unregistering "
6961                                 "HBA's FCF record: rc=%d\n", rc);
6962                 return;
6963         }
6964
6965         /* Now, unregister FCF record and reset HBA FCF state */
6966         rc = lpfc_sli4_unregister_fcf(phba);
6967         if (rc)
6968                 return;
6969         /* Reset HBA FCF states after successful unregister FCF */
6970         phba->fcf.fcf_flag = 0;
6971         phba->fcf.current_rec.flag = 0;
6972
6973         /*
6974          * If driver is not unloading, check if there is any other
6975          * FCF record that can be used for discovery.
6976          */
6977         if ((phba->pport->load_flag & FC_UNLOADING) ||
6978             (phba->link_state < LPFC_LINK_UP))
6979                 return;
6980
6981         /* This is considered as the initial FCF discovery scan */
6982         spin_lock_irq(&phba->hbalock);
6983         phba->fcf.fcf_flag |= FCF_INIT_DISC;
6984         spin_unlock_irq(&phba->hbalock);
6985
6986         /* Reset FCF roundrobin bmask for new discovery */
6987         lpfc_sli4_clear_fcf_rr_bmask(phba);
6988
6989         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
6990
6991         if (rc) {
6992                 spin_lock_irq(&phba->hbalock);
6993                 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
6994                 spin_unlock_irq(&phba->hbalock);
6995                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6996                                 "2553 lpfc_unregister_unused_fcf failed "
6997                                 "to read FCF record HBA state x%x\n",
6998                                 phba->pport->port_state);
6999         }
7000 }
7001
7002 /**
7003  * lpfc_unregister_fcf - Unregister the currently registered fcf record
7004  * @phba: Pointer to hba context object.
7005  *
7006  * This function just unregisters the currently reigstered FCF. It does not
7007  * try to find another FCF for discovery.
7008  */
7009 void
7010 lpfc_unregister_fcf(struct lpfc_hba *phba)
7011 {
7012         int rc;
7013
7014         /* Preparation for unregistering fcf */
7015         rc = lpfc_unregister_fcf_prep(phba);
7016         if (rc) {
7017                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7018                                 "2749 Failed to prepare for unregistering "
7019                                 "HBA's FCF record: rc=%d\n", rc);
7020                 return;
7021         }
7022
7023         /* Now, unregister FCF record and reset HBA FCF state */
7024         rc = lpfc_sli4_unregister_fcf(phba);
7025         if (rc)
7026                 return;
7027         /* Set proper HBA FCF states after successful unregister FCF */
7028         spin_lock_irq(&phba->hbalock);
7029         phba->fcf.fcf_flag &= ~FCF_REGISTERED;
7030         spin_unlock_irq(&phba->hbalock);
7031 }
7032
7033 /**
7034  * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
7035  * @phba: Pointer to hba context object.
7036  *
7037  * This function check if there are any connected remote port for the FCF and
7038  * if all the devices are disconnected, this function unregister FCFI.
7039  * This function also tries to use another FCF for discovery.
7040  */
7041 void
7042 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
7043 {
7044         /*
7045          * If HBA is not running in FIP mode, if HBA does not support
7046          * FCoE, if FCF discovery is ongoing, or if FCF has not been
7047          * registered, do nothing.
7048          */
7049         spin_lock_irq(&phba->hbalock);
7050         if (!(phba->hba_flag & HBA_FCOE_MODE) ||
7051             !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
7052             !(phba->hba_flag & HBA_FIP_SUPPORT) ||
7053             (phba->fcf.fcf_flag & FCF_DISCOVERY) ||
7054             (phba->pport->port_state == LPFC_FLOGI)) {
7055                 spin_unlock_irq(&phba->hbalock);
7056                 return;
7057         }
7058         spin_unlock_irq(&phba->hbalock);
7059
7060         if (lpfc_fcf_inuse(phba))
7061                 return;
7062
7063         lpfc_unregister_fcf_rescan(phba);
7064 }
7065
7066 /**
7067  * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
7068  * @phba: Pointer to hba context object.
7069  * @buff: Buffer containing the FCF connection table as in the config
7070  *         region.
7071  * This function create driver data structure for the FCF connection
7072  * record table read from config region 23.
7073  */
7074 static void
7075 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
7076         uint8_t *buff)
7077 {
7078         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
7079         struct lpfc_fcf_conn_hdr *conn_hdr;
7080         struct lpfc_fcf_conn_rec *conn_rec;
7081         uint32_t record_count;
7082         int i;
7083
7084         /* Free the current connect table */
7085         list_for_each_entry_safe(conn_entry, next_conn_entry,
7086                 &phba->fcf_conn_rec_list, list) {
7087                 list_del_init(&conn_entry->list);
7088                 kfree(conn_entry);
7089         }
7090
7091         conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
7092         record_count = conn_hdr->length * sizeof(uint32_t)/
7093                 sizeof(struct lpfc_fcf_conn_rec);
7094
7095         conn_rec = (struct lpfc_fcf_conn_rec *)
7096                 (buff + sizeof(struct lpfc_fcf_conn_hdr));
7097
7098         for (i = 0; i < record_count; i++) {
7099                 if (!(conn_rec[i].flags & FCFCNCT_VALID))
7100                         continue;
7101                 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
7102                         GFP_KERNEL);
7103                 if (!conn_entry) {
7104                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7105                                         "2566 Failed to allocate connection"
7106                                         " table entry\n");
7107                         return;
7108                 }
7109
7110                 memcpy(&conn_entry->conn_rec, &conn_rec[i],
7111                         sizeof(struct lpfc_fcf_conn_rec));
7112                 list_add_tail(&conn_entry->list,
7113                         &phba->fcf_conn_rec_list);
7114         }
7115
7116         if (!list_empty(&phba->fcf_conn_rec_list)) {
7117                 i = 0;
7118                 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list,
7119                                     list) {
7120                         conn_rec = &conn_entry->conn_rec;
7121                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7122                                         "3345 FCF connection list rec[%02d]: "
7123                                         "flags:x%04x, vtag:x%04x, "
7124                                         "fabric_name:x%02x:%02x:%02x:%02x:"
7125                                         "%02x:%02x:%02x:%02x, "
7126                                         "switch_name:x%02x:%02x:%02x:%02x:"
7127                                         "%02x:%02x:%02x:%02x\n", i++,
7128                                         conn_rec->flags, conn_rec->vlan_tag,
7129                                         conn_rec->fabric_name[0],
7130                                         conn_rec->fabric_name[1],
7131                                         conn_rec->fabric_name[2],
7132                                         conn_rec->fabric_name[3],
7133                                         conn_rec->fabric_name[4],
7134                                         conn_rec->fabric_name[5],
7135                                         conn_rec->fabric_name[6],
7136                                         conn_rec->fabric_name[7],
7137                                         conn_rec->switch_name[0],
7138                                         conn_rec->switch_name[1],
7139                                         conn_rec->switch_name[2],
7140                                         conn_rec->switch_name[3],
7141                                         conn_rec->switch_name[4],
7142                                         conn_rec->switch_name[5],
7143                                         conn_rec->switch_name[6],
7144                                         conn_rec->switch_name[7]);
7145                 }
7146         }
7147 }
7148
7149 /**
7150  * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
7151  * @phba: Pointer to hba context object.
7152  * @buff: Buffer containing the FCoE parameter data structure.
7153  *
7154  *  This function update driver data structure with config
7155  *  parameters read from config region 23.
7156  */
7157 static void
7158 lpfc_read_fcoe_param(struct lpfc_hba *phba,
7159                         uint8_t *buff)
7160 {
7161         struct lpfc_fip_param_hdr *fcoe_param_hdr;
7162         struct lpfc_fcoe_params *fcoe_param;
7163
7164         fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
7165                 buff;
7166         fcoe_param = (struct lpfc_fcoe_params *)
7167                 (buff + sizeof(struct lpfc_fip_param_hdr));
7168
7169         if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
7170                 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
7171                 return;
7172
7173         if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
7174                 phba->valid_vlan = 1;
7175                 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
7176                         0xFFF;
7177         }
7178
7179         phba->fc_map[0] = fcoe_param->fc_map[0];
7180         phba->fc_map[1] = fcoe_param->fc_map[1];
7181         phba->fc_map[2] = fcoe_param->fc_map[2];
7182         return;
7183 }
7184
7185 /**
7186  * lpfc_get_rec_conf23 - Get a record type in config region data.
7187  * @buff: Buffer containing config region 23 data.
7188  * @size: Size of the data buffer.
7189  * @rec_type: Record type to be searched.
7190  *
7191  * This function searches config region data to find the beginning
7192  * of the record specified by record_type. If record found, this
7193  * function return pointer to the record else return NULL.
7194  */
7195 static uint8_t *
7196 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
7197 {
7198         uint32_t offset = 0, rec_length;
7199
7200         if ((buff[0] == LPFC_REGION23_LAST_REC) ||
7201                 (size < sizeof(uint32_t)))
7202                 return NULL;
7203
7204         rec_length = buff[offset + 1];
7205
7206         /*
7207          * One TLV record has one word header and number of data words
7208          * specified in the rec_length field of the record header.
7209          */
7210         while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
7211                 <= size) {
7212                 if (buff[offset] == rec_type)
7213                         return &buff[offset];
7214
7215                 if (buff[offset] == LPFC_REGION23_LAST_REC)
7216                         return NULL;
7217
7218                 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
7219                 rec_length = buff[offset + 1];
7220         }
7221         return NULL;
7222 }
7223
7224 /**
7225  * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
7226  * @phba: Pointer to lpfc_hba data structure.
7227  * @buff: Buffer containing config region 23 data.
7228  * @size: Size of the data buffer.
7229  *
7230  * This function parses the FCoE config parameters in config region 23 and
7231  * populate driver data structure with the parameters.
7232  */
7233 void
7234 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
7235                 uint8_t *buff,
7236                 uint32_t size)
7237 {
7238         uint32_t offset = 0;
7239         uint8_t *rec_ptr;
7240
7241         /*
7242          * If data size is less than 2 words signature and version cannot be
7243          * verified.
7244          */
7245         if (size < 2*sizeof(uint32_t))
7246                 return;
7247
7248         /* Check the region signature first */
7249         if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
7250                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7251                         "2567 Config region 23 has bad signature\n");
7252                 return;
7253         }
7254
7255         offset += 4;
7256
7257         /* Check the data structure version */
7258         if (buff[offset] != LPFC_REGION23_VERSION) {
7259                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7260                                 "2568 Config region 23 has bad version\n");
7261                 return;
7262         }
7263         offset += 4;
7264
7265         /* Read FCoE param record */
7266         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
7267                         size - offset, FCOE_PARAM_TYPE);
7268         if (rec_ptr)
7269                 lpfc_read_fcoe_param(phba, rec_ptr);
7270
7271         /* Read FCF connection table */
7272         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
7273                 size - offset, FCOE_CONN_TBL_TYPE);
7274         if (rec_ptr)
7275                 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
7276
7277 }