drivers/scsi/lpfc/lpfc_hbadisc.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2017-2023 Broadcom. All Rights Reserved. The term *
   5  * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.     *
   6  * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
   7  * EMULEX and SLI are trademarks of Emulex.                        *
   8  * www.broadcom.com                                                *
   9  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
  10  *                                                                 *
  11  * This program is free software; you can redistribute it and/or   *
  12  * modify it under the terms of version 2 of the GNU General       *
  13  * Public License as published by the Free Software Foundation.    *
  14  * This program is distributed in the hope that it will be useful. *
  15  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  16  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  17  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  18  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  19  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  20  * more details, a copy of which can be found in the file COPYING  *
  21  * included with this package.                                     *
  22  *******************************************************************/
  23
  24 #include <linux/blkdev.h>
  25 #include <linux/delay.h>
  26 #include <linux/slab.h>
  27 #include <linux/pci.h>
  28 #include <linux/kthread.h>
  29 #include <linux/interrupt.h>
  30 #include <linux/lockdep.h>
  31 #include <linux/utsname.h>
  32
  33 #include <scsi/scsi.h>
  34 #include <scsi/scsi_device.h>
  35 #include <scsi/scsi_host.h>
  36 #include <scsi/scsi_transport_fc.h>
  37 #include <scsi/fc/fc_fs.h>
  38
  39 #include "lpfc_hw4.h"
  40 #include "lpfc_hw.h"
  41 #include "lpfc_nl.h"
  42 #include "lpfc_disc.h"
  43 #include "lpfc_sli.h"
  44 #include "lpfc_sli4.h"
  45 #include "lpfc.h"
  46 #include "lpfc_scsi.h"
  47 #include "lpfc_nvme.h"
  48 #include "lpfc_logmsg.h"
  49 #include "lpfc_crtn.h"
  50 #include "lpfc_vport.h"
  51 #include "lpfc_debugfs.h"
  52
  53 /* AlpaArray for assignment of scsid for scan-down and bind_method */
  54 static uint8_t lpfcAlpaArray[] = {
  55         0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
  56         0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
  57         0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
  58         0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
  59         0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
  60         0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
  61         0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
  62         0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
  63         0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
  64         0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
  65         0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
  66         0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
  67         0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
  68 };
  69
  70 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
  71 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
  72 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
  73 static int lpfc_fcf_inuse(struct lpfc_hba *);
  74 static void lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *, LPFC_MBOXQ_t *);
  75 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba);
  76 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba);
  77
  78 static int
  79 lpfc_valid_xpt_node(struct lpfc_nodelist *ndlp)
  80 {
  81         if (ndlp->nlp_fc4_type ||
  82             ndlp->nlp_type & NLP_FABRIC)
  83                 return 1;
  84         return 0;
  85 }
  86 /* The source of a terminate rport I/O is either a dev_loss_tmo
  87  * event or a call to fc_remove_host.  While the rport should be
  88  * valid during these downcalls, the transport can call twice
  89  * in a single event.  This routine provides somoe protection
  90  * as the NDLP isn't really free, just released to the pool.
  91  */
  92 static int
  93 lpfc_rport_invalid(struct fc_rport *rport)
  94 {
  95         struct lpfc_rport_data *rdata;
  96         struct lpfc_nodelist *ndlp;
  97
  98         if (!rport) {
  99                 pr_err("**** %s: NULL rport, exit.\n", __func__);
 100                 return -EINVAL;
 101         }
 102
 103         rdata = rport->dd_data;
 104         if (!rdata) {
 105                 pr_err("**** %s: NULL dd_data on rport x%px SID x%x\n",
 106                        __func__, rport, rport->scsi_target_id);
 107                 return -EINVAL;
 108         }
 109
 110         ndlp = rdata->pnode;
 111         if (!rdata->pnode) {
 112                 pr_info("**** %s: NULL ndlp on rport x%px SID x%x\n",
 113                         __func__, rport, rport->scsi_target_id);
 114                 return -EINVAL;
 115         }
 116
 117         if (!ndlp->vport) {
 118                 pr_err("**** %s: Null vport on ndlp x%px, DID x%x rport x%px "
 119                        "SID x%x\n", __func__, ndlp, ndlp->nlp_DID, rport,
 120                        rport->scsi_target_id);
 121                 return -EINVAL;
 122         }
 123         return 0;
 124 }
 125
 126 void
 127 lpfc_terminate_rport_io(struct fc_rport *rport)
 128 {
 129         struct lpfc_rport_data *rdata;
 130         struct lpfc_nodelist *ndlp;
 131         struct lpfc_vport *vport;
 132
 133         if (lpfc_rport_invalid(rport))
 134                 return;
 135
 136         rdata = rport->dd_data;
 137         ndlp = rdata->pnode;
 138         vport = ndlp->vport;
 139         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 140                               "rport terminate: sid:x%x did:x%x flg:x%x",
 141                               ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 142
 143         if (ndlp->nlp_sid != NLP_NO_SID)
 144                 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 145 }
 146
 147 /*
 148  * This function will be called when dev_loss_tmo fire.
 149  */
 150 void
 151 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
 152 {
 153         struct lpfc_nodelist *ndlp;
 154         struct lpfc_vport *vport;
 155         struct lpfc_hba   *phba;
 156         struct lpfc_work_evt *evtp;
 157         unsigned long iflags;
 158
 159         ndlp = ((struct lpfc_rport_data *)rport->dd_data)->pnode;
 160         if (!ndlp)
 161                 return;
 162
 163         vport = ndlp->vport;
 164         phba  = vport->phba;
 165
 166         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 167                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
 168                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 169
 170         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 171                          "3181 dev_loss_callbk x%06x, rport x%px flg x%x "
 172                          "load_flag x%x refcnt %u state %d xpt x%x\n",
 173                          ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag,
 174                          vport->load_flag, kref_read(&ndlp->kref),
 175                          ndlp->nlp_state, ndlp->fc4_xpt_flags);
 176
 177         /* Don't schedule a worker thread event if the vport is going down. */
 178         if (vport->load_flag & FC_UNLOADING) {
 179                 spin_lock_irqsave(&ndlp->lock, iflags);
 180                 ndlp->rport = NULL;
 181
 182                 /* The scsi_transport is done with the rport so lpfc cannot
 183                  * call to unregister. Remove the scsi transport reference
 184                  * and clean up the SCSI transport node details.
 185                  */
 186                 if (ndlp->fc4_xpt_flags & (NLP_XPT_REGD | SCSI_XPT_REGD)) {
 187                         ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD;
 188
 189                         /* NVME transport-registered rports need the
 190                          * NLP_XPT_REGD flag to complete an unregister.
 191                          */
 192                         if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD))
 193                                 ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD;
 194                         spin_unlock_irqrestore(&ndlp->lock, iflags);
 195                         lpfc_nlp_put(ndlp);
 196                         spin_lock_irqsave(&ndlp->lock, iflags);
 197                 }
 198
 199                 /* Only 1 thread can drop the initial node reference.  If
 200                  * another thread has set NLP_DROPPED, this thread is done.
 201                  */
 202                 if (!(ndlp->nlp_flag & NLP_DROPPED)) {
 203                         ndlp->nlp_flag |= NLP_DROPPED;
 204                         spin_unlock_irqrestore(&ndlp->lock, iflags);
 205                         lpfc_nlp_put(ndlp);
 206                         spin_lock_irqsave(&ndlp->lock, iflags);
 207                 }
 208
 209                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 210                 return;
 211         }
 212
 213         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 214                 return;
 215
 216         if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn))
 217                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 218                                  "6789 rport name %llx != node port name %llx",
 219                                  rport->port_name,
 220                                  wwn_to_u64(ndlp->nlp_portname.u.wwn));
 221
 222         evtp = &ndlp->dev_loss_evt;
 223
 224         if (!list_empty(&evtp->evt_listp)) {
 225                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 226                                  "6790 rport name %llx dev_loss_evt pending\n",
 227                                  rport->port_name);
 228                 return;
 229         }
 230
 231         spin_lock_irqsave(&ndlp->lock, iflags);
 232         ndlp->nlp_flag |= NLP_IN_DEV_LOSS;
 233
 234         /* If there is a PLOGI in progress, and we are in a
 235          * NLP_NPR_2B_DISC state, don't turn off the flag.
 236          */
 237         if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE)
 238                 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 239
 240         /*
 241          * The backend does not expect any more calls associated with this
 242          * rport. Remove the association between rport and ndlp.
 243          */
 244         ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD;
 245         ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL;
 246         ndlp->rport = NULL;
 247         spin_unlock_irqrestore(&ndlp->lock, iflags);
 248
 249         if (phba->worker_thread) {
 250                 /* We need to hold the node by incrementing the reference
 251                  * count until this queued work is done
 252                  */
 253                 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
 254
 255                 spin_lock_irqsave(&phba->hbalock, iflags);
 256                 if (evtp->evt_arg1) {
 257                         evtp->evt = LPFC_EVT_DEV_LOSS;
 258                         list_add_tail(&evtp->evt_listp, &phba->work_list);
 259                         lpfc_worker_wake_up(phba);
 260                 }
 261                 spin_unlock_irqrestore(&phba->hbalock, iflags);
 262         } else {
 263                 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 264                                  "3188 worker thread is stopped %s x%06x, "
 265                                  " rport x%px flg x%x load_flag x%x refcnt "
 266                                  "%d\n", __func__, ndlp->nlp_DID,
 267                                  ndlp->rport, ndlp->nlp_flag,
 268                                  vport->load_flag, kref_read(&ndlp->kref));
 269                 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) {
 270                         spin_lock_irqsave(&ndlp->lock, iflags);
 271                         /* Node is in dev loss.  No further transaction. */
 272                         ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
 273                         spin_unlock_irqrestore(&ndlp->lock, iflags);
 274                         lpfc_disc_state_machine(vport, ndlp, NULL,
 275                                                 NLP_EVT_DEVICE_RM);
 276                 }
 277
 278         }
 279
 280         return;
 281 }
 282
 283 /**
 284  * lpfc_check_inactive_vmid_one - VMID inactivity checker for a vport
 285  * @vport: Pointer to vport context object.
 286  *
 287  * This function checks for idle VMID entries related to a particular vport. If
 288  * found unused/idle, free them accordingly.
 289  **/
 290 static void lpfc_check_inactive_vmid_one(struct lpfc_vport *vport)
 291 {
 292         u16 keep;
 293         u32 difftime = 0, r, bucket;
 294         u64 *lta;
 295         int cpu;
 296         struct lpfc_vmid *vmp;
 297
 298         write_lock(&vport->vmid_lock);
 299
 300         if (!vport->cur_vmid_cnt)
 301                 goto out;
 302
 303         /* iterate through the table */
 304         hash_for_each(vport->hash_table, bucket, vmp, hnode) {
 305                 keep = 0;
 306                 if (vmp->flag & LPFC_VMID_REGISTERED) {
 307                         /* check if the particular VMID is in use */
 308                         /* for all available per cpu variable */
 309                         for_each_possible_cpu(cpu) {
 310                                 /* if last access time is less than timeout */
 311                                 lta = per_cpu_ptr(vmp->last_io_time, cpu);
 312                                 if (!lta)
 313                                         continue;
 314                                 difftime = (jiffies) - (*lta);
 315                                 if ((vport->vmid_inactivity_timeout *
 316                                      JIFFIES_PER_HR) > difftime) {
 317                                         keep = 1;
 318                                         break;
 319                                 }
 320                         }
 321
 322                         /* if none of the cpus have been used by the vm, */
 323                         /*  remove the entry if already registered */
 324                         if (!keep) {
 325                                 /* mark the entry for deregistration */
 326                                 vmp->flag = LPFC_VMID_DE_REGISTER;
 327                                 write_unlock(&vport->vmid_lock);
 328                                 if (vport->vmid_priority_tagging)
 329                                         r = lpfc_vmid_uvem(vport, vmp, false);
 330                                 else
 331                                         r = lpfc_vmid_cmd(vport,
 332                                                           SLI_CTAS_DAPP_IDENT,
 333                                                           vmp);
 334
 335                                 /* decrement number of active vms and mark */
 336                                 /* entry in slot as free */
 337                                 write_lock(&vport->vmid_lock);
 338                                 if (!r) {
 339                                         struct lpfc_vmid *ht = vmp;
 340
 341                                         vport->cur_vmid_cnt--;
 342                                         ht->flag = LPFC_VMID_SLOT_FREE;
 343                                         free_percpu(ht->last_io_time);
 344                                         ht->last_io_time = NULL;
 345                                         hash_del(&ht->hnode);
 346                                 }
 347                         }
 348                 }
 349         }
 350  out:
 351         write_unlock(&vport->vmid_lock);
 352 }
 353
 354 /**
 355  * lpfc_check_inactive_vmid - VMID inactivity checker
 356  * @phba: Pointer to hba context object.
 357  *
 358  * This function is called from the worker thread to determine if an entry in
 359  * the VMID table can be released since there was no I/O activity seen from that
 360  * particular VM for the specified time. When this happens, the entry in the
 361  * table is released and also the resources on the switch cleared.
 362  **/
 363
 364 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba)
 365 {
 366         struct lpfc_vport *vport;
 367         struct lpfc_vport **vports;
 368         int i;
 369
 370         vports = lpfc_create_vport_work_array(phba);
 371         if (!vports)
 372                 return;
 373
 374         for (i = 0; i <= phba->max_vports; i++) {
 375                 if ((!vports[i]) && (i == 0))
 376                         vport = phba->pport;
 377                 else
 378                         vport = vports[i];
 379                 if (!vport)
 380                         break;
 381
 382                 lpfc_check_inactive_vmid_one(vport);
 383         }
 384         lpfc_destroy_vport_work_array(phba, vports);
 385 }
 386
 387 /**
 388  * lpfc_check_nlp_post_devloss - Check to restore ndlp refcnt after devloss
 389  * @vport: Pointer to vport object.
 390  * @ndlp: Pointer to remote node object.
 391  *
 392  * If NLP_IN_RECOV_POST_DEV_LOSS flag was set due to outstanding recovery of
 393  * node during dev_loss_tmo processing, then this function restores the nlp_put
 394  * kref decrement from lpfc_dev_loss_tmo_handler.
 395  **/
 396 void
 397 lpfc_check_nlp_post_devloss(struct lpfc_vport *vport,
 398                             struct lpfc_nodelist *ndlp)
 399 {
 400         unsigned long iflags;
 401
 402         spin_lock_irqsave(&ndlp->lock, iflags);
 403         if (ndlp->save_flags & NLP_IN_RECOV_POST_DEV_LOSS) {
 404                 ndlp->save_flags &= ~NLP_IN_RECOV_POST_DEV_LOSS;
 405                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 406                 lpfc_nlp_get(ndlp);
 407                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY | LOG_NODE,
 408                                  "8438 Devloss timeout reversed on DID x%x "
 409                                  "refcnt %d ndlp %p flag x%x "
 410                                  "port_state = x%x\n",
 411                                  ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp,
 412                                  ndlp->nlp_flag, vport->port_state);
 413                 spin_lock_irqsave(&ndlp->lock, iflags);
 414         }
 415         spin_unlock_irqrestore(&ndlp->lock, iflags);
 416 }
 417
 418 /**
 419  * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler
 420  * @ndlp: Pointer to remote node object.
 421  *
 422  * This function is called from the worker thread when devloss timeout timer
 423  * expires. For SLI4 host, this routine shall return 1 when at lease one
 424  * remote node, including this @ndlp, is still in use of FCF; otherwise, this
 425  * routine shall return 0 when there is no remote node is still in use of FCF
 426  * when devloss timeout happened to this @ndlp.
 427  **/
 428 static int
 429 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 430 {
 431         struct lpfc_vport *vport;
 432         struct lpfc_hba   *phba;
 433         uint8_t *name;
 434         int warn_on = 0;
 435         int fcf_inuse = 0;
 436         bool recovering = false;
 437         struct fc_vport *fc_vport = NULL;
 438         unsigned long iflags;
 439
 440         vport = ndlp->vport;
 441         name = (uint8_t *)&ndlp->nlp_portname;
 442         phba = vport->phba;
 443
 444         if (phba->sli_rev == LPFC_SLI_REV4)
 445                 fcf_inuse = lpfc_fcf_inuse(phba);
 446
 447         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 448                               "rport devlosstmo:did:x%x type:x%x id:x%x",
 449                               ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_sid);
 450
 451         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 452                          "3182 %s x%06x, nflag x%x xflags x%x refcnt %d\n",
 453                          __func__, ndlp->nlp_DID, ndlp->nlp_flag,
 454                          ndlp->fc4_xpt_flags, kref_read(&ndlp->kref));
 455
 456         /* If the driver is recovering the rport, ignore devloss. */
 457         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
 458                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 459                                  "0284 Devloss timeout Ignored on "
 460                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 461                                  "NPort x%x\n",
 462                                  *name, *(name+1), *(name+2), *(name+3),
 463                                  *(name+4), *(name+5), *(name+6), *(name+7),
 464                                  ndlp->nlp_DID);
 465
 466                 spin_lock_irqsave(&ndlp->lock, iflags);
 467                 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
 468                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 469                 return fcf_inuse;
 470         }
 471
 472         /* Fabric nodes are done. */
 473         if (ndlp->nlp_type & NLP_FABRIC) {
 474                 spin_lock_irqsave(&ndlp->lock, iflags);
 475
 476                 /* The driver has to account for a race between any fabric
 477                  * node that's in recovery when dev_loss_tmo expires. When this
 478                  * happens, the driver has to allow node recovery.
 479                  */
 480                 switch (ndlp->nlp_DID) {
 481                 case Fabric_DID:
 482                         fc_vport = vport->fc_vport;
 483                         if (fc_vport) {
 484                                 /* NPIV path. */
 485                                 if (fc_vport->vport_state ==
 486                                     FC_VPORT_INITIALIZING)
 487                                         recovering = true;
 488                         } else {
 489                                 /* Physical port path. */
 490                                 if (phba->hba_flag & HBA_FLOGI_OUTSTANDING)
 491                                         recovering = true;
 492                         }
 493                         break;
 494                 case Fabric_Cntl_DID:
 495                         if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
 496                                 recovering = true;
 497                         break;
 498                 case FDMI_DID:
 499                         fallthrough;
 500                 case NameServer_DID:
 501                         if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
 502                             ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE)
 503                                 recovering = true;
 504                         break;
 505                 default:
 506                         /* Ensure the nlp_DID at least has the correct prefix.
 507                          * The fabric domain controller's last three nibbles
 508                          * vary so we handle it in the default case.
 509                          */
 510                         if (ndlp->nlp_DID & Fabric_DID_MASK) {
 511                                 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
 512                                     ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE)
 513                                         recovering = true;
 514                         }
 515                         break;
 516                 }
 517                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 518
 519                 /* Mark an NLP_IN_RECOV_POST_DEV_LOSS flag to know if reversing
 520                  * the following lpfc_nlp_put is necessary after fabric node is
 521                  * recovered.
 522                  */
 523                 if (recovering) {
 524                         lpfc_printf_vlog(vport, KERN_INFO,
 525                                          LOG_DISCOVERY | LOG_NODE,
 526                                          "8436 Devloss timeout marked on "
 527                                          "DID x%x refcnt %d ndlp %p "
 528                                          "flag x%x port_state = x%x\n",
 529                                          ndlp->nlp_DID, kref_read(&ndlp->kref),
 530                                          ndlp, ndlp->nlp_flag,
 531                                          vport->port_state);
 532                         spin_lock_irqsave(&ndlp->lock, iflags);
 533                         ndlp->save_flags |= NLP_IN_RECOV_POST_DEV_LOSS;
 534                         spin_unlock_irqrestore(&ndlp->lock, iflags);
 535                 } else if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
 536                         /* Fabric node fully recovered before this dev_loss_tmo
 537                          * queue work is processed.  Thus, ignore the
 538                          * dev_loss_tmo event.
 539                          */
 540                         lpfc_printf_vlog(vport, KERN_INFO,
 541                                          LOG_DISCOVERY | LOG_NODE,
 542                                          "8437 Devloss timeout ignored on "
 543                                          "DID x%x refcnt %d ndlp %p "
 544                                          "flag x%x port_state = x%x\n",
 545                                          ndlp->nlp_DID, kref_read(&ndlp->kref),
 546                                          ndlp, ndlp->nlp_flag,
 547                                          vport->port_state);
 548                         return fcf_inuse;
 549                 }
 550
 551                 spin_lock_irqsave(&ndlp->lock, iflags);
 552                 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
 553                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 554                 lpfc_nlp_put(ndlp);
 555                 return fcf_inuse;
 556         }
 557
 558         if (ndlp->nlp_sid != NLP_NO_SID) {
 559                 warn_on = 1;
 560                 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 561         }
 562
 563         if (warn_on) {
 564                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 565                                  "0203 Devloss timeout on "
 566                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 567                                  "NPort x%06x Data: x%x x%x x%x refcnt %d\n",
 568                                  *name, *(name+1), *(name+2), *(name+3),
 569                                  *(name+4), *(name+5), *(name+6), *(name+7),
 570                                  ndlp->nlp_DID, ndlp->nlp_flag,
 571                                  ndlp->nlp_state, ndlp->nlp_rpi,
 572                                  kref_read(&ndlp->kref));
 573         } else {
 574                 lpfc_printf_vlog(vport, KERN_INFO, LOG_TRACE_EVENT,
 575                                  "0204 Devloss timeout on "
 576                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 577                                  "NPort x%06x Data: x%x x%x x%x\n",
 578                                  *name, *(name+1), *(name+2), *(name+3),
 579                                  *(name+4), *(name+5), *(name+6), *(name+7),
 580                                  ndlp->nlp_DID, ndlp->nlp_flag,
 581                                  ndlp->nlp_state, ndlp->nlp_rpi);
 582         }
 583         spin_lock_irqsave(&ndlp->lock, iflags);
 584         ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
 585         spin_unlock_irqrestore(&ndlp->lock, iflags);
 586
 587         /* If we are devloss, but we are in the process of rediscovering the
 588          * ndlp, don't issue a NLP_EVT_DEVICE_RM event.
 589          */
 590         if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
 591             ndlp->nlp_state <= NLP_STE_PRLI_ISSUE) {
 592                 return fcf_inuse;
 593         }
 594
 595         if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD))
 596                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 597
 598         return fcf_inuse;
 599 }
 600
 601 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba)
 602 {
 603         struct lpfc_vport *vport;
 604         struct lpfc_vport **vports;
 605         int i;
 606
 607         vports = lpfc_create_vport_work_array(phba);
 608         if (!vports)
 609                 return;
 610
 611         for (i = 0; i <= phba->max_vports; i++) {
 612                 if ((!vports[i]) && (i == 0))
 613                         vport = phba->pport;
 614                 else
 615                         vport = vports[i];
 616                 if (!vport)
 617                         break;
 618
 619                 if (vport->vmid_flag & LPFC_VMID_ISSUE_QFPA) {
 620                         if (!lpfc_issue_els_qfpa(vport))
 621                                 vport->vmid_flag &= ~LPFC_VMID_ISSUE_QFPA;
 622                 }
 623         }
 624         lpfc_destroy_vport_work_array(phba, vports);
 625 }
 626
 627 /**
 628  * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler
 629  * @phba: Pointer to hba context object.
 630  * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler.
 631  * @nlp_did: remote node identifer with devloss timeout.
 632  *
 633  * This function is called from the worker thread after invoking devloss
 634  * timeout handler and releasing the reference count for the ndlp with
 635  * which the devloss timeout was handled for SLI4 host. For the devloss
 636  * timeout of the last remote node which had been in use of FCF, when this
 637  * routine is invoked, it shall be guaranteed that none of the remote are
 638  * in-use of FCF. When devloss timeout to the last remote using the FCF,
 639  * if the FIP engine is neither in FCF table scan process nor roundrobin
 640  * failover process, the in-use FCF shall be unregistered. If the FIP
 641  * engine is in FCF discovery process, the devloss timeout state shall
 642  * be set for either the FCF table scan process or roundrobin failover
 643  * process to unregister the in-use FCF.
 644  **/
 645 static void
 646 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse,
 647                                     uint32_t nlp_did)
 648 {
 649         /* If devloss timeout happened to a remote node when FCF had no
 650          * longer been in-use, do nothing.
 651          */
 652         if (!fcf_inuse)
 653                 return;
 654
 655         if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) {
 656                 spin_lock_irq(&phba->hbalock);
 657                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
 658                         if (phba->hba_flag & HBA_DEVLOSS_TMO) {
 659                                 spin_unlock_irq(&phba->hbalock);
 660                                 return;
 661                         }
 662                         phba->hba_flag |= HBA_DEVLOSS_TMO;
 663                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 664                                         "2847 Last remote node (x%x) using "
 665                                         "FCF devloss tmo\n", nlp_did);
 666                 }
 667                 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) {
 668                         spin_unlock_irq(&phba->hbalock);
 669                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 670                                         "2868 Devloss tmo to FCF rediscovery "
 671                                         "in progress\n");
 672                         return;
 673                 }
 674                 if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) {
 675                         spin_unlock_irq(&phba->hbalock);
 676                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 677                                         "2869 Devloss tmo to idle FIP engine, "
 678                                         "unreg in-use FCF and rescan.\n");
 679                         /* Unregister in-use FCF and rescan */
 680                         lpfc_unregister_fcf_rescan(phba);
 681                         return;
 682                 }
 683                 spin_unlock_irq(&phba->hbalock);
 684                 if (phba->hba_flag & FCF_TS_INPROG)
 685                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 686                                         "2870 FCF table scan in progress\n");
 687                 if (phba->hba_flag & FCF_RR_INPROG)
 688                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 689                                         "2871 FLOGI roundrobin FCF failover "
 690                                         "in progress\n");
 691         }
 692         lpfc_unregister_unused_fcf(phba);
 693 }
 694
 695 /**
 696  * lpfc_alloc_fast_evt - Allocates data structure for posting event
 697  * @phba: Pointer to hba context object.
 698  *
 699  * This function is called from the functions which need to post
 700  * events from interrupt context. This function allocates data
 701  * structure required for posting event. It also keeps track of
 702  * number of events pending and prevent event storm when there are
 703  * too many events.
 704  **/
 705 struct lpfc_fast_path_event *
 706 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
 707         struct lpfc_fast_path_event *ret;
 708
 709         /* If there are lot of fast event do not exhaust memory due to this */
 710         if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
 711                 return NULL;
 712
 713         ret = kzalloc(sizeof(struct lpfc_fast_path_event),
 714                         GFP_ATOMIC);
 715         if (ret) {
 716                 atomic_inc(&phba->fast_event_count);
 717                 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
 718                 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
 719         }
 720         return ret;
 721 }
 722
 723 /**
 724  * lpfc_free_fast_evt - Frees event data structure
 725  * @phba: Pointer to hba context object.
 726  * @evt:  Event object which need to be freed.
 727  *
 728  * This function frees the data structure required for posting
 729  * events.
 730  **/
 731 void
 732 lpfc_free_fast_evt(struct lpfc_hba *phba,
 733                 struct lpfc_fast_path_event *evt) {
 734
 735         atomic_dec(&phba->fast_event_count);
 736         kfree(evt);
 737 }
 738
 739 /**
 740  * lpfc_send_fastpath_evt - Posts events generated from fast path
 741  * @phba: Pointer to hba context object.
 742  * @evtp: Event data structure.
 743  *
 744  * This function is called from worker thread, when the interrupt
 745  * context need to post an event. This function posts the event
 746  * to fc transport netlink interface.
 747  **/
 748 static void
 749 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
 750                 struct lpfc_work_evt *evtp)
 751 {
 752         unsigned long evt_category, evt_sub_category;
 753         struct lpfc_fast_path_event *fast_evt_data;
 754         char *evt_data;
 755         uint32_t evt_data_size;
 756         struct Scsi_Host *shost;
 757
 758         fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
 759                 work_evt);
 760
 761         evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
 762         evt_sub_category = (unsigned long) fast_evt_data->un.
 763                         fabric_evt.subcategory;
 764         shost = lpfc_shost_from_vport(fast_evt_data->vport);
 765         if (evt_category == FC_REG_FABRIC_EVENT) {
 766                 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
 767                         evt_data = (char *) &fast_evt_data->un.read_check_error;
 768                         evt_data_size = sizeof(fast_evt_data->un.
 769                                 read_check_error);
 770                 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
 771                         (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
 772                         evt_data = (char *) &fast_evt_data->un.fabric_evt;
 773                         evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
 774                 } else {
 775                         lpfc_free_fast_evt(phba, fast_evt_data);
 776                         return;
 777                 }
 778         } else if (evt_category == FC_REG_SCSI_EVENT) {
 779                 switch (evt_sub_category) {
 780                 case LPFC_EVENT_QFULL:
 781                 case LPFC_EVENT_DEVBSY:
 782                         evt_data = (char *) &fast_evt_data->un.scsi_evt;
 783                         evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
 784                         break;
 785                 case LPFC_EVENT_CHECK_COND:
 786                         evt_data = (char *) &fast_evt_data->un.check_cond_evt;
 787                         evt_data_size =  sizeof(fast_evt_data->un.
 788                                 check_cond_evt);
 789                         break;
 790                 case LPFC_EVENT_VARQUEDEPTH:
 791                         evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
 792                         evt_data_size = sizeof(fast_evt_data->un.
 793                                 queue_depth_evt);
 794                         break;
 795                 default:
 796                         lpfc_free_fast_evt(phba, fast_evt_data);
 797                         return;
 798                 }
 799         } else {
 800                 lpfc_free_fast_evt(phba, fast_evt_data);
 801                 return;
 802         }
 803
 804         if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
 805                 fc_host_post_vendor_event(shost,
 806                         fc_get_event_number(),
 807                         evt_data_size,
 808                         evt_data,
 809                         LPFC_NL_VENDOR_ID);
 810
 811         lpfc_free_fast_evt(phba, fast_evt_data);
 812         return;
 813 }
 814
 815 static void
 816 lpfc_work_list_done(struct lpfc_hba *phba)
 817 {
 818         struct lpfc_work_evt  *evtp = NULL;
 819         struct lpfc_nodelist  *ndlp;
 820         int free_evt;
 821         int fcf_inuse;
 822         uint32_t nlp_did;
 823         bool hba_pci_err;
 824
 825         spin_lock_irq(&phba->hbalock);
 826         while (!list_empty(&phba->work_list)) {
 827                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 828                                  evt_listp);
 829                 spin_unlock_irq(&phba->hbalock);
 830                 hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags);
 831                 free_evt = 1;
 832                 switch (evtp->evt) {
 833                 case LPFC_EVT_ELS_RETRY:
 834                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 835                         if (!hba_pci_err) {
 836                                 lpfc_els_retry_delay_handler(ndlp);
 837                                 free_evt = 0; /* evt is part of ndlp */
 838                         }
 839                         /* decrement the node reference count held
 840                          * for this queued work
 841                          */
 842                         lpfc_nlp_put(ndlp);
 843                         break;
 844                 case LPFC_EVT_DEV_LOSS:
 845                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 846                         fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp);
 847                         free_evt = 0;
 848                         /* decrement the node reference count held for
 849                          * this queued work
 850                          */
 851                         nlp_did = ndlp->nlp_DID;
 852                         lpfc_nlp_put(ndlp);
 853                         if (phba->sli_rev == LPFC_SLI_REV4)
 854                                 lpfc_sli4_post_dev_loss_tmo_handler(phba,
 855                                                                     fcf_inuse,
 856                                                                     nlp_did);
 857                         break;
 858                 case LPFC_EVT_RECOVER_PORT:
 859                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 860                         if (!hba_pci_err) {
 861                                 lpfc_sli_abts_recover_port(ndlp->vport, ndlp);
 862                                 free_evt = 0;
 863                         }
 864                         /* decrement the node reference count held for
 865                          * this queued work
 866                          */
 867                         lpfc_nlp_put(ndlp);
 868                         break;
 869                 case LPFC_EVT_ONLINE:
 870                         if (phba->link_state < LPFC_LINK_DOWN)
 871                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 872                         else
 873                                 *(int *) (evtp->evt_arg1) = 0;
 874                         complete((struct completion *)(evtp->evt_arg2));
 875                         break;
 876                 case LPFC_EVT_OFFLINE_PREP:
 877                         if (phba->link_state >= LPFC_LINK_DOWN)
 878                                 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
 879                         *(int *)(evtp->evt_arg1) = 0;
 880                         complete((struct completion *)(evtp->evt_arg2));
 881                         break;
 882                 case LPFC_EVT_OFFLINE:
 883                         lpfc_offline(phba);
 884                         lpfc_sli_brdrestart(phba);
 885                         *(int *)(evtp->evt_arg1) =
 886                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 887                         lpfc_unblock_mgmt_io(phba);
 888                         complete((struct completion *)(evtp->evt_arg2));
 889                         break;
 890                 case LPFC_EVT_WARM_START:
 891                         lpfc_offline(phba);
 892                         lpfc_reset_barrier(phba);
 893                         lpfc_sli_brdreset(phba);
 894                         lpfc_hba_down_post(phba);
 895                         *(int *)(evtp->evt_arg1) =
 896                                 lpfc_sli_brdready(phba, HS_MBRDY);
 897                         lpfc_unblock_mgmt_io(phba);
 898                         complete((struct completion *)(evtp->evt_arg2));
 899                         break;
 900                 case LPFC_EVT_KILL:
 901                         lpfc_offline(phba);
 902                         *(int *)(evtp->evt_arg1)
 903                                 = (phba->pport->stopped)
 904                                         ? 0 : lpfc_sli_brdkill(phba);
 905                         lpfc_unblock_mgmt_io(phba);
 906                         complete((struct completion *)(evtp->evt_arg2));
 907                         break;
 908                 case LPFC_EVT_FASTPATH_MGMT_EVT:
 909                         lpfc_send_fastpath_evt(phba, evtp);
 910                         free_evt = 0;
 911                         break;
 912                 case LPFC_EVT_RESET_HBA:
 913                         if (!(phba->pport->load_flag & FC_UNLOADING))
 914                                 lpfc_reset_hba(phba);
 915                         break;
 916                 }
 917                 if (free_evt)
 918                         kfree(evtp);
 919                 spin_lock_irq(&phba->hbalock);
 920         }
 921         spin_unlock_irq(&phba->hbalock);
 922
 923 }
 924
 925 static void
 926 lpfc_work_done(struct lpfc_hba *phba)
 927 {
 928         struct lpfc_sli_ring *pring;
 929         uint32_t ha_copy, status, control, work_port_events;
 930         struct lpfc_vport **vports;
 931         struct lpfc_vport *vport;
 932         int i;
 933         bool hba_pci_err;
 934
 935         hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags);
 936         spin_lock_irq(&phba->hbalock);
 937         ha_copy = phba->work_ha;
 938         phba->work_ha = 0;
 939         spin_unlock_irq(&phba->hbalock);
 940         if (hba_pci_err)
 941                 ha_copy = 0;
 942
 943         /* First, try to post the next mailbox command to SLI4 device */
 944         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC && !hba_pci_err)
 945                 lpfc_sli4_post_async_mbox(phba);
 946
 947         if (ha_copy & HA_ERATT) {
 948                 /* Handle the error attention event */
 949                 lpfc_handle_eratt(phba);
 950
 951                 if (phba->fw_dump_cmpl) {
 952                         complete(phba->fw_dump_cmpl);
 953                         phba->fw_dump_cmpl = NULL;
 954                 }
 955         }
 956
 957         if (ha_copy & HA_MBATT)
 958                 lpfc_sli_handle_mb_event(phba);
 959
 960         if (ha_copy & HA_LATT)
 961                 lpfc_handle_latt(phba);
 962
 963         /* Handle VMID Events */
 964         if (lpfc_is_vmid_enabled(phba) && !hba_pci_err) {
 965                 if (phba->pport->work_port_events &
 966                     WORKER_CHECK_VMID_ISSUE_QFPA) {
 967                         lpfc_check_vmid_qfpa_issue(phba);
 968                         phba->pport->work_port_events &=
 969                                 ~WORKER_CHECK_VMID_ISSUE_QFPA;
 970                 }
 971                 if (phba->pport->work_port_events &
 972                     WORKER_CHECK_INACTIVE_VMID) {
 973                         lpfc_check_inactive_vmid(phba);
 974                         phba->pport->work_port_events &=
 975                             ~WORKER_CHECK_INACTIVE_VMID;
 976                 }
 977         }
 978
 979         /* Process SLI4 events */
 980         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
 981                 if (phba->hba_flag & HBA_RRQ_ACTIVE)
 982                         lpfc_handle_rrq_active(phba);
 983                 if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
 984                         lpfc_sli4_els_xri_abort_event_proc(phba);
 985                 if (phba->hba_flag & ASYNC_EVENT)
 986                         lpfc_sli4_async_event_proc(phba);
 987                 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
 988                         spin_lock_irq(&phba->hbalock);
 989                         phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
 990                         spin_unlock_irq(&phba->hbalock);
 991                         lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
 992                 }
 993                 if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
 994                         lpfc_sli4_fcf_redisc_event_proc(phba);
 995         }
 996
 997         vports = lpfc_create_vport_work_array(phba);
 998         if (vports != NULL)
 999                 for (i = 0; i <= phba->max_vports; i++) {
1000                         /*
1001                          * We could have no vports in array if unloading, so if
1002                          * this happens then just use the pport
1003                          */
1004                         if (vports[i] == NULL && i == 0)
1005                                 vport = phba->pport;
1006                         else
1007                                 vport = vports[i];
1008                         if (vport == NULL)
1009                                 break;
1010                         spin_lock_irq(&vport->work_port_lock);
1011                         work_port_events = vport->work_port_events;
1012                         vport->work_port_events &= ~work_port_events;
1013                         spin_unlock_irq(&vport->work_port_lock);
1014                         if (hba_pci_err)
1015                                 continue;
1016                         if (work_port_events & WORKER_DISC_TMO)
1017                                 lpfc_disc_timeout_handler(vport);
1018                         if (work_port_events & WORKER_ELS_TMO)
1019                                 lpfc_els_timeout_handler(vport);
1020                         if (work_port_events & WORKER_HB_TMO)
1021                                 lpfc_hb_timeout_handler(phba);
1022                         if (work_port_events & WORKER_MBOX_TMO)
1023                                 lpfc_mbox_timeout_handler(phba);
1024                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
1025                                 lpfc_unblock_fabric_iocbs(phba);
1026                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
1027                                 lpfc_ramp_down_queue_handler(phba);
1028                         if (work_port_events & WORKER_DELAYED_DISC_TMO)
1029                                 lpfc_delayed_disc_timeout_handler(vport);
1030                 }
1031         lpfc_destroy_vport_work_array(phba, vports);
1032
1033         pring = lpfc_phba_elsring(phba);
1034         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
1035         status >>= (4*LPFC_ELS_RING);
1036         if (pring && (status & HA_RXMASK ||
1037                       pring->flag & LPFC_DEFERRED_RING_EVENT ||
1038                       phba->hba_flag & HBA_SP_QUEUE_EVT)) {
1039                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
1040                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
1041                         /* Preserve legacy behavior. */
1042                         if (!(phba->hba_flag & HBA_SP_QUEUE_EVT))
1043                                 set_bit(LPFC_DATA_READY, &phba->data_flags);
1044                 } else {
1045                         /* Driver could have abort request completed in queue
1046                          * when link goes down.  Allow for this transition.
1047                          */
1048                         if (phba->link_state >= LPFC_LINK_DOWN ||
1049                             phba->link_flag & LS_MDS_LOOPBACK) {
1050                                 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
1051                                 lpfc_sli_handle_slow_ring_event(phba, pring,
1052                                                                 (status &
1053                                                                 HA_RXMASK));
1054                         }
1055                 }
1056                 if (phba->sli_rev == LPFC_SLI_REV4)
1057                         lpfc_drain_txq(phba);
1058                 /*
1059                  * Turn on Ring interrupts
1060                  */
1061                 if (phba->sli_rev <= LPFC_SLI_REV3) {
1062                         spin_lock_irq(&phba->hbalock);
1063                         control = readl(phba->HCregaddr);
1064                         if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
1065                                 lpfc_debugfs_slow_ring_trc(phba,
1066                                         "WRK Enable ring: cntl:x%x hacopy:x%x",
1067                                         control, ha_copy, 0);
1068
1069                                 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
1070                                 writel(control, phba->HCregaddr);
1071                                 readl(phba->HCregaddr); /* flush */
1072                         } else {
1073                                 lpfc_debugfs_slow_ring_trc(phba,
1074                                         "WRK Ring ok:     cntl:x%x hacopy:x%x",
1075                                         control, ha_copy, 0);
1076                         }
1077                         spin_unlock_irq(&phba->hbalock);
1078                 }
1079         }
1080         lpfc_work_list_done(phba);
1081 }
1082
1083 int
1084 lpfc_do_work(void *p)
1085 {
1086         struct lpfc_hba *phba = p;
1087         int rc;
1088
1089         set_user_nice(current, MIN_NICE);
1090         current->flags |= PF_NOFREEZE;
1091         phba->data_flags = 0;
1092
1093         while (!kthread_should_stop()) {
1094                 /* wait and check worker queue activities */
1095                 rc = wait_event_interruptible(phba->work_waitq,
1096                                         (test_and_clear_bit(LPFC_DATA_READY,
1097                                                             &phba->data_flags)
1098                                          || kthread_should_stop()));
1099                 /* Signal wakeup shall terminate the worker thread */
1100                 if (rc) {
1101                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1102                                         "0433 Wakeup on signal: rc=x%x\n", rc);
1103                         break;
1104                 }
1105
1106                 /* Attend pending lpfc data processing */
1107                 lpfc_work_done(phba);
1108         }
1109         phba->worker_thread = NULL;
1110         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1111                         "0432 Worker thread stopped.\n");
1112         return 0;
1113 }
1114
1115 /*
1116  * This is only called to handle FC worker events. Since this a rare
1117  * occurrence, we allocate a struct lpfc_work_evt structure here instead of
1118  * embedding it in the IOCB.
1119  */
1120 int
1121 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
1122                       uint32_t evt)
1123 {
1124         struct lpfc_work_evt  *evtp;
1125         unsigned long flags;
1126
1127         /*
1128          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
1129          * be queued to worker thread for processing
1130          */
1131         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
1132         if (!evtp)
1133                 return 0;
1134
1135         evtp->evt_arg1  = arg1;
1136         evtp->evt_arg2  = arg2;
1137         evtp->evt       = evt;
1138
1139         spin_lock_irqsave(&phba->hbalock, flags);
1140         list_add_tail(&evtp->evt_listp, &phba->work_list);
1141         spin_unlock_irqrestore(&phba->hbalock, flags);
1142
1143         lpfc_worker_wake_up(phba);
1144
1145         return 1;
1146 }
1147
1148 void
1149 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
1150 {
1151         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1152         struct lpfc_hba  *phba = vport->phba;
1153         struct lpfc_nodelist *ndlp, *next_ndlp;
1154
1155         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
1156                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
1157                     ((vport->port_type == LPFC_NPIV_PORT) &&
1158                      ((ndlp->nlp_DID == NameServer_DID) ||
1159                       (ndlp->nlp_DID == FDMI_DID) ||
1160                       (ndlp->nlp_DID == Fabric_Cntl_DID))))
1161                         lpfc_unreg_rpi(vport, ndlp);
1162
1163                 /* Leave Fabric nodes alone on link down */
1164                 if ((phba->sli_rev < LPFC_SLI_REV4) &&
1165                     (!remove && ndlp->nlp_type & NLP_FABRIC))
1166                         continue;
1167
1168                 /* Notify transport of connectivity loss to trigger cleanup. */
1169                 if (phba->nvmet_support &&
1170                     ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
1171                         lpfc_nvmet_invalidate_host(phba, ndlp);
1172
1173                 lpfc_disc_state_machine(vport, ndlp, NULL,
1174                                         remove
1175                                         ? NLP_EVT_DEVICE_RM
1176                                         : NLP_EVT_DEVICE_RECOVERY);
1177         }
1178         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
1179                 if (phba->sli_rev == LPFC_SLI_REV4)
1180                         lpfc_sli4_unreg_all_rpis(vport);
1181                 lpfc_mbx_unreg_vpi(vport);
1182                 spin_lock_irq(shost->host_lock);
1183                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
1184                 spin_unlock_irq(shost->host_lock);
1185         }
1186 }
1187
1188 void
1189 lpfc_port_link_failure(struct lpfc_vport *vport)
1190 {
1191         lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
1192
1193         /* Cleanup any outstanding received buffers */
1194         lpfc_cleanup_rcv_buffers(vport);
1195
1196         /* Cleanup any outstanding RSCN activity */
1197         lpfc_els_flush_rscn(vport);
1198
1199         /* Cleanup any outstanding ELS commands */
1200         lpfc_els_flush_cmd(vport);
1201
1202         lpfc_cleanup_rpis(vport, 0);
1203
1204         /* Turn off discovery timer if its running */
1205         lpfc_can_disctmo(vport);
1206 }
1207
1208 void
1209 lpfc_linkdown_port(struct lpfc_vport *vport)
1210 {
1211         struct lpfc_hba *phba = vport->phba;
1212         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1213
1214         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1215                 fc_host_post_event(shost, fc_get_event_number(),
1216                                    FCH_EVT_LINKDOWN, 0);
1217
1218         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1219                 "Link Down:       state:x%x rtry:x%x flg:x%x",
1220                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1221
1222         lpfc_port_link_failure(vport);
1223
1224         /* Stop delayed Nport discovery */
1225         spin_lock_irq(shost->host_lock);
1226         vport->fc_flag &= ~FC_DISC_DELAYED;
1227         spin_unlock_irq(shost->host_lock);
1228         del_timer_sync(&vport->delayed_disc_tmo);
1229
1230         if (phba->sli_rev == LPFC_SLI_REV4 &&
1231             vport->port_type == LPFC_PHYSICAL_PORT &&
1232             phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_CONFIG) {
1233                 /* Assume success on link up */
1234                 phba->sli4_hba.fawwpn_flag |= LPFC_FAWWPN_FABRIC;
1235         }
1236 }
1237
1238 int
1239 lpfc_linkdown(struct lpfc_hba *phba)
1240 {
1241         struct lpfc_vport *vport = phba->pport;
1242         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1243         struct lpfc_vport **vports;
1244         LPFC_MBOXQ_t          *mb;
1245         int i;
1246         int offline;
1247
1248         if (phba->link_state == LPFC_LINK_DOWN)
1249                 return 0;
1250
1251         /* Block all SCSI stack I/Os */
1252         lpfc_scsi_dev_block(phba);
1253         offline = pci_channel_offline(phba->pcidev);
1254
1255         phba->defer_flogi_acc_flag = false;
1256
1257         /* Clear external loopback plug detected flag */
1258         phba->link_flag &= ~LS_EXTERNAL_LOOPBACK;
1259
1260         spin_lock_irq(&phba->hbalock);
1261         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
1262         spin_unlock_irq(&phba->hbalock);
1263         if (phba->link_state > LPFC_LINK_DOWN) {
1264                 phba->link_state = LPFC_LINK_DOWN;
1265                 if (phba->sli4_hba.conf_trunk) {
1266                         phba->trunk_link.link0.state = 0;
1267                         phba->trunk_link.link1.state = 0;
1268                         phba->trunk_link.link2.state = 0;
1269                         phba->trunk_link.link3.state = 0;
1270                         phba->trunk_link.phy_lnk_speed =
1271                                                 LPFC_LINK_SPEED_UNKNOWN;
1272                         phba->sli4_hba.link_state.logical_speed =
1273                                                 LPFC_LINK_SPEED_UNKNOWN;
1274                 }
1275                 spin_lock_irq(shost->host_lock);
1276                 phba->pport->fc_flag &= ~FC_LBIT;
1277                 spin_unlock_irq(shost->host_lock);
1278         }
1279         vports = lpfc_create_vport_work_array(phba);
1280         if (vports != NULL) {
1281                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
1282                         /* Issue a LINK DOWN event to all nodes */
1283                         lpfc_linkdown_port(vports[i]);
1284
1285                         vports[i]->fc_myDID = 0;
1286
1287                         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
1288                             (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1289                                 if (phba->nvmet_support)
1290                                         lpfc_nvmet_update_targetport(phba);
1291                                 else
1292                                         lpfc_nvme_update_localport(vports[i]);
1293                         }
1294                 }
1295         }
1296         lpfc_destroy_vport_work_array(phba, vports);
1297
1298         /* Clean up any SLI3 firmware default rpi's */
1299         if (phba->sli_rev > LPFC_SLI_REV3 || offline)
1300                 goto skip_unreg_did;
1301
1302         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1303         if (mb) {
1304                 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb);
1305                 mb->vport = vport;
1306                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1307                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
1308                     == MBX_NOT_FINISHED) {
1309                         mempool_free(mb, phba->mbox_mem_pool);
1310                 }
1311         }
1312
1313  skip_unreg_did:
1314         /* Setup myDID for link up if we are in pt2pt mode */
1315         if (phba->pport->fc_flag & FC_PT2PT) {
1316                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1317                 if (mb) {
1318                         lpfc_config_link(phba, mb);
1319                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1320                         mb->vport = vport;
1321                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
1322                             == MBX_NOT_FINISHED) {
1323                                 mempool_free(mb, phba->mbox_mem_pool);
1324                         }
1325                 }
1326                 spin_lock_irq(shost->host_lock);
1327                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
1328                 phba->pport->rcv_flogi_cnt = 0;
1329                 spin_unlock_irq(shost->host_lock);
1330         }
1331         return 0;
1332 }
1333
1334 static void
1335 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
1336 {
1337         struct lpfc_nodelist *ndlp;
1338
1339         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
1340                 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
1341
1342                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
1343                         continue;
1344                 if (ndlp->nlp_type & NLP_FABRIC) {
1345                         /* On Linkup its safe to clean up the ndlp
1346                          * from Fabric connections.
1347                          */
1348                         if (ndlp->nlp_DID != Fabric_DID)
1349                                 lpfc_unreg_rpi(vport, ndlp);
1350                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1351                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
1352                         /* Fail outstanding IO now since device is
1353                          * marked for PLOGI.
1354                          */
1355                         lpfc_unreg_rpi(vport, ndlp);
1356                 }
1357         }
1358 }
1359
1360 static void
1361 lpfc_linkup_port(struct lpfc_vport *vport)
1362 {
1363         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1364         struct lpfc_hba  *phba = vport->phba;
1365
1366         if ((vport->load_flag & FC_UNLOADING) != 0)
1367                 return;
1368
1369         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1370                 "Link Up:         top:x%x speed:x%x flg:x%x",
1371                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
1372
1373         /* If NPIV is not enabled, only bring the physical port up */
1374         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
1375                 (vport != phba->pport))
1376                 return;
1377
1378         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1379                 fc_host_post_event(shost, fc_get_event_number(),
1380                                    FCH_EVT_LINKUP, 0);
1381
1382         spin_lock_irq(shost->host_lock);
1383         if (phba->defer_flogi_acc_flag)
1384                 vport->fc_flag &= ~(FC_ABORT_DISCOVERY | FC_RSCN_MODE |
1385                                     FC_NLP_MORE | FC_RSCN_DISCOVERY);
1386         else
1387                 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI |
1388                                     FC_ABORT_DISCOVERY | FC_RSCN_MODE |
1389                                     FC_NLP_MORE | FC_RSCN_DISCOVERY);
1390         vport->fc_flag |= FC_NDISC_ACTIVE;
1391         vport->fc_ns_retry = 0;
1392         spin_unlock_irq(shost->host_lock);
1393         lpfc_setup_fdmi_mask(vport);
1394
1395         lpfc_linkup_cleanup_nodes(vport);
1396 }
1397
1398 static int
1399 lpfc_linkup(struct lpfc_hba *phba)
1400 {
1401         struct lpfc_vport **vports;
1402         int i;
1403         struct Scsi_Host  *shost = lpfc_shost_from_vport(phba->pport);
1404
1405         phba->link_state = LPFC_LINK_UP;
1406
1407         /* Unblock fabric iocbs if they are blocked */
1408         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
1409         del_timer_sync(&phba->fabric_block_timer);
1410
1411         vports = lpfc_create_vport_work_array(phba);
1412         if (vports != NULL)
1413                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
1414                         lpfc_linkup_port(vports[i]);
1415         lpfc_destroy_vport_work_array(phba, vports);
1416
1417         /* Clear the pport flogi counter in case the link down was
1418          * absorbed without an ACQE. No lock here - in worker thread
1419          * and discovery is synchronized.
1420          */
1421         spin_lock_irq(shost->host_lock);
1422         phba->pport->rcv_flogi_cnt = 0;
1423         spin_unlock_irq(shost->host_lock);
1424
1425         /* reinitialize initial HBA flag */
1426         phba->hba_flag &= ~(HBA_FLOGI_ISSUED | HBA_RHBA_CMPL);
1427
1428         return 0;
1429 }
1430
1431 /*
1432  * This routine handles processing a CLEAR_LA mailbox
1433  * command upon completion. It is setup in the LPFC_MBOXQ
1434  * as the completion routine when the command is
1435  * handed off to the SLI layer. SLI3 only.
1436  */
1437 static void
1438 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1439 {
1440         struct lpfc_vport *vport = pmb->vport;
1441         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1442         struct lpfc_sli   *psli = &phba->sli;
1443         MAILBOX_t *mb = &pmb->u.mb;
1444         uint32_t control;
1445
1446         /* Since we don't do discovery right now, turn these off here */
1447         psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1448         psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1449
1450         /* Check for error */
1451         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
1452                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
1453                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1454                                  "0320 CLEAR_LA mbxStatus error x%x hba "
1455                                  "state x%x\n",
1456                                  mb->mbxStatus, vport->port_state);
1457                 phba->link_state = LPFC_HBA_ERROR;
1458                 goto out;
1459         }
1460
1461         if (vport->port_type == LPFC_PHYSICAL_PORT)
1462                 phba->link_state = LPFC_HBA_READY;
1463
1464         spin_lock_irq(&phba->hbalock);
1465         psli->sli_flag |= LPFC_PROCESS_LA;
1466         control = readl(phba->HCregaddr);
1467         control |= HC_LAINT_ENA;
1468         writel(control, phba->HCregaddr);
1469         readl(phba->HCregaddr); /* flush */
1470         spin_unlock_irq(&phba->hbalock);
1471         mempool_free(pmb, phba->mbox_mem_pool);
1472         return;
1473
1474 out:
1475         /* Device Discovery completes */
1476         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1477                          "0225 Device Discovery completes\n");
1478         mempool_free(pmb, phba->mbox_mem_pool);
1479
1480         spin_lock_irq(shost->host_lock);
1481         vport->fc_flag &= ~FC_ABORT_DISCOVERY;
1482         spin_unlock_irq(shost->host_lock);
1483
1484         lpfc_can_disctmo(vport);
1485
1486         /* turn on Link Attention interrupts */
1487
1488         spin_lock_irq(&phba->hbalock);
1489         psli->sli_flag |= LPFC_PROCESS_LA;
1490         control = readl(phba->HCregaddr);
1491         control |= HC_LAINT_ENA;
1492         writel(control, phba->HCregaddr);
1493         readl(phba->HCregaddr); /* flush */
1494         spin_unlock_irq(&phba->hbalock);
1495
1496         return;
1497 }
1498
1499 void
1500 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1501 {
1502         struct lpfc_vport *vport = pmb->vport;
1503         LPFC_MBOXQ_t *sparam_mb;
1504         u16 status = pmb->u.mb.mbxStatus;
1505         int rc;
1506
1507         mempool_free(pmb, phba->mbox_mem_pool);
1508
1509         if (status)
1510                 goto out;
1511
1512         /* don't perform discovery for SLI4 loopback diagnostic test */
1513         if ((phba->sli_rev == LPFC_SLI_REV4) &&
1514             !(phba->hba_flag & HBA_FCOE_MODE) &&
1515             (phba->link_flag & LS_LOOPBACK_MODE))
1516                 return;
1517
1518         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
1519             vport->fc_flag & FC_PUBLIC_LOOP &&
1520             !(vport->fc_flag & FC_LBIT)) {
1521                         /* Need to wait for FAN - use discovery timer
1522                          * for timeout.  port_state is identically
1523                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
1524                          */
1525                         lpfc_set_disctmo(vport);
1526                         return;
1527         }
1528
1529         /* Start discovery by sending a FLOGI. port_state is identically
1530          * LPFC_FLOGI while waiting for FLOGI cmpl.
1531          */
1532         if (vport->port_state != LPFC_FLOGI) {
1533                 /* Issue MBX_READ_SPARAM to update CSPs before FLOGI if
1534                  * bb-credit recovery is in place.
1535                  */
1536                 if (phba->bbcredit_support && phba->cfg_enable_bbcr &&
1537                     !(phba->link_flag & LS_LOOPBACK_MODE)) {
1538                         sparam_mb = mempool_alloc(phba->mbox_mem_pool,
1539                                                   GFP_KERNEL);
1540                         if (!sparam_mb)
1541                                 goto sparam_out;
1542
1543                         rc = lpfc_read_sparam(phba, sparam_mb, 0);
1544                         if (rc) {
1545                                 mempool_free(sparam_mb, phba->mbox_mem_pool);
1546                                 goto sparam_out;
1547                         }
1548                         sparam_mb->vport = vport;
1549                         sparam_mb->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1550                         rc = lpfc_sli_issue_mbox(phba, sparam_mb, MBX_NOWAIT);
1551                         if (rc == MBX_NOT_FINISHED) {
1552                                 lpfc_mbox_rsrc_cleanup(phba, sparam_mb,
1553                                                        MBOX_THD_UNLOCKED);
1554                                 goto sparam_out;
1555                         }
1556
1557                         phba->hba_flag |= HBA_DEFER_FLOGI;
1558                 }  else {
1559                         lpfc_initial_flogi(vport);
1560                 }
1561         } else {
1562                 if (vport->fc_flag & FC_PT2PT)
1563                         lpfc_disc_start(vport);
1564         }
1565         return;
1566
1567 out:
1568         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1569                          "0306 CONFIG_LINK mbxStatus error x%x HBA state x%x\n",
1570                          status, vport->port_state);
1571
1572 sparam_out:
1573         lpfc_linkdown(phba);
1574
1575         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1576                          "0200 CONFIG_LINK bad hba state x%x\n",
1577                          vport->port_state);
1578
1579         lpfc_issue_clear_la(phba, vport);
1580         return;
1581 }
1582
1583 /**
1584  * lpfc_sli4_clear_fcf_rr_bmask
1585  * @phba: pointer to the struct lpfc_hba for this port.
1586  * This fucnction resets the round robin bit mask and clears the
1587  * fcf priority list. The list deletions are done while holding the
1588  * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared
1589  * from the lpfc_fcf_pri record.
1590  **/
1591 void
1592 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba)
1593 {
1594         struct lpfc_fcf_pri *fcf_pri;
1595         struct lpfc_fcf_pri *next_fcf_pri;
1596         memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask));
1597         spin_lock_irq(&phba->hbalock);
1598         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
1599                                 &phba->fcf.fcf_pri_list, list) {
1600                 list_del_init(&fcf_pri->list);
1601                 fcf_pri->fcf_rec.flag = 0;
1602         }
1603         spin_unlock_irq(&phba->hbalock);
1604 }
1605 static void
1606 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1607 {
1608         struct lpfc_vport *vport = mboxq->vport;
1609
1610         if (mboxq->u.mb.mbxStatus) {
1611                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1612                                  "2017 REG_FCFI mbxStatus error x%x "
1613                                  "HBA state x%x\n", mboxq->u.mb.mbxStatus,
1614                                  vport->port_state);
1615                 goto fail_out;
1616         }
1617
1618         /* Start FCoE discovery by sending a FLOGI. */
1619         phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1620         /* Set the FCFI registered flag */
1621         spin_lock_irq(&phba->hbalock);
1622         phba->fcf.fcf_flag |= FCF_REGISTERED;
1623         spin_unlock_irq(&phba->hbalock);
1624
1625         /* If there is a pending FCoE event, restart FCF table scan. */
1626         if ((!(phba->hba_flag & FCF_RR_INPROG)) &&
1627                 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF))
1628                 goto fail_out;
1629
1630         /* Mark successful completion of FCF table scan */
1631         spin_lock_irq(&phba->hbalock);
1632         phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1633         phba->hba_flag &= ~FCF_TS_INPROG;
1634         if (vport->port_state != LPFC_FLOGI) {
1635                 phba->hba_flag |= FCF_RR_INPROG;
1636                 spin_unlock_irq(&phba->hbalock);
1637                 lpfc_issue_init_vfi(vport);
1638                 goto out;
1639         }
1640         spin_unlock_irq(&phba->hbalock);
1641         goto out;
1642
1643 fail_out:
1644         spin_lock_irq(&phba->hbalock);
1645         phba->hba_flag &= ~FCF_RR_INPROG;
1646         spin_unlock_irq(&phba->hbalock);
1647 out:
1648         mempool_free(mboxq, phba->mbox_mem_pool);
1649 }
1650
1651 /**
1652  * lpfc_fab_name_match - Check if the fcf fabric name match.
1653  * @fab_name: pointer to fabric name.
1654  * @new_fcf_record: pointer to fcf record.
1655  *
1656  * This routine compare the fcf record's fabric name with provided
1657  * fabric name. If the fabric name are identical this function
1658  * returns 1 else return 0.
1659  **/
1660 static uint32_t
1661 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1662 {
1663         if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1664                 return 0;
1665         if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1666                 return 0;
1667         if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1668                 return 0;
1669         if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1670                 return 0;
1671         if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1672                 return 0;
1673         if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1674                 return 0;
1675         if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1676                 return 0;
1677         if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1678                 return 0;
1679         return 1;
1680 }
1681
1682 /**
1683  * lpfc_sw_name_match - Check if the fcf switch name match.
1684  * @sw_name: pointer to switch name.
1685  * @new_fcf_record: pointer to fcf record.
1686  *
1687  * This routine compare the fcf record's switch name with provided
1688  * switch name. If the switch name are identical this function
1689  * returns 1 else return 0.
1690  **/
1691 static uint32_t
1692 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1693 {
1694         if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1695                 return 0;
1696         if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1697                 return 0;
1698         if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1699                 return 0;
1700         if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1701                 return 0;
1702         if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1703                 return 0;
1704         if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1705                 return 0;
1706         if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1707                 return 0;
1708         if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1709                 return 0;
1710         return 1;
1711 }
1712
1713 /**
1714  * lpfc_mac_addr_match - Check if the fcf mac address match.
1715  * @mac_addr: pointer to mac address.
1716  * @new_fcf_record: pointer to fcf record.
1717  *
1718  * This routine compare the fcf record's mac address with HBA's
1719  * FCF mac address. If the mac addresses are identical this function
1720  * returns 1 else return 0.
1721  **/
1722 static uint32_t
1723 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1724 {
1725         if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1726                 return 0;
1727         if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1728                 return 0;
1729         if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1730                 return 0;
1731         if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1732                 return 0;
1733         if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1734                 return 0;
1735         if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1736                 return 0;
1737         return 1;
1738 }
1739
1740 static bool
1741 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1742 {
1743         return (curr_vlan_id == new_vlan_id);
1744 }
1745
1746 /**
1747  * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record.
1748  * @phba: pointer to lpfc hba data structure.
1749  * @fcf_index: Index for the lpfc_fcf_record.
1750  * @new_fcf_record: pointer to hba fcf record.
1751  *
1752  * This routine updates the driver FCF priority record from the new HBA FCF
1753  * record. The hbalock is asserted held in the code path calling this
1754  * routine.
1755  **/
1756 static void
1757 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index,
1758                                  struct fcf_record *new_fcf_record
1759                                  )
1760 {
1761         struct lpfc_fcf_pri *fcf_pri;
1762
1763         fcf_pri = &phba->fcf.fcf_pri[fcf_index];
1764         fcf_pri->fcf_rec.fcf_index = fcf_index;
1765         /* FCF record priority */
1766         fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
1767
1768 }
1769
1770 /**
1771  * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1772  * @fcf_rec: pointer to driver fcf record.
1773  * @new_fcf_record: pointer to fcf record.
1774  *
1775  * This routine copies the FCF information from the FCF
1776  * record to lpfc_hba data structure.
1777  **/
1778 static void
1779 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1780                      struct fcf_record *new_fcf_record)
1781 {
1782         /* Fabric name */
1783         fcf_rec->fabric_name[0] =
1784                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1785         fcf_rec->fabric_name[1] =
1786                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1787         fcf_rec->fabric_name[2] =
1788                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1789         fcf_rec->fabric_name[3] =
1790                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1791         fcf_rec->fabric_name[4] =
1792                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1793         fcf_rec->fabric_name[5] =
1794                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1795         fcf_rec->fabric_name[6] =
1796                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1797         fcf_rec->fabric_name[7] =
1798                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1799         /* Mac address */
1800         fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1801         fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1802         fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1803         fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1804         fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1805         fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1806         /* FCF record index */
1807         fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1808         /* FCF record priority */
1809         fcf_rec->priority = new_fcf_record->fip_priority;
1810         /* Switch name */
1811         fcf_rec->switch_name[0] =
1812                 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1813         fcf_rec->switch_name[1] =
1814                 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1815         fcf_rec->switch_name[2] =
1816                 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1817         fcf_rec->switch_name[3] =
1818                 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1819         fcf_rec->switch_name[4] =
1820                 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1821         fcf_rec->switch_name[5] =
1822                 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1823         fcf_rec->switch_name[6] =
1824                 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1825         fcf_rec->switch_name[7] =
1826                 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1827 }
1828
1829 /**
1830  * __lpfc_update_fcf_record - Update driver fcf record
1831  * @phba: pointer to lpfc hba data structure.
1832  * @fcf_rec: pointer to driver fcf record.
1833  * @new_fcf_record: pointer to hba fcf record.
1834  * @addr_mode: address mode to be set to the driver fcf record.
1835  * @vlan_id: vlan tag to be set to the driver fcf record.
1836  * @flag: flag bits to be set to the driver fcf record.
1837  *
1838  * This routine updates the driver FCF record from the new HBA FCF record
1839  * together with the address mode, vlan_id, and other informations. This
1840  * routine is called with the hbalock held.
1841  **/
1842 static void
1843 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1844                        struct fcf_record *new_fcf_record, uint32_t addr_mode,
1845                        uint16_t vlan_id, uint32_t flag)
1846 {
1847         lockdep_assert_held(&phba->hbalock);
1848
1849         /* Copy the fields from the HBA's FCF record */
1850         lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1851         /* Update other fields of driver FCF record */
1852         fcf_rec->addr_mode = addr_mode;
1853         fcf_rec->vlan_id = vlan_id;
1854         fcf_rec->flag |= (flag | RECORD_VALID);
1855         __lpfc_update_fcf_record_pri(phba,
1856                 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record),
1857                                  new_fcf_record);
1858 }
1859
1860 /**
1861  * lpfc_register_fcf - Register the FCF with hba.
1862  * @phba: pointer to lpfc hba data structure.
1863  *
1864  * This routine issues a register fcfi mailbox command to register
1865  * the fcf with HBA.
1866  **/
1867 static void
1868 lpfc_register_fcf(struct lpfc_hba *phba)
1869 {
1870         LPFC_MBOXQ_t *fcf_mbxq;
1871         int rc;
1872
1873         spin_lock_irq(&phba->hbalock);
1874         /* If the FCF is not available do nothing. */
1875         if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1876                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1877                 spin_unlock_irq(&phba->hbalock);
1878                 return;
1879         }
1880
1881         /* The FCF is already registered, start discovery */
1882         if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1883                 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1884                 phba->hba_flag &= ~FCF_TS_INPROG;
1885                 if (phba->pport->port_state != LPFC_FLOGI &&
1886                     phba->pport->fc_flag & FC_FABRIC) {
1887                         phba->hba_flag |= FCF_RR_INPROG;
1888                         spin_unlock_irq(&phba->hbalock);
1889                         lpfc_initial_flogi(phba->pport);
1890                         return;
1891                 }
1892                 spin_unlock_irq(&phba->hbalock);
1893                 return;
1894         }
1895         spin_unlock_irq(&phba->hbalock);
1896
1897         fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1898         if (!fcf_mbxq) {
1899                 spin_lock_irq(&phba->hbalock);
1900                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1901                 spin_unlock_irq(&phba->hbalock);
1902                 return;
1903         }
1904
1905         lpfc_reg_fcfi(phba, fcf_mbxq);
1906         fcf_mbxq->vport = phba->pport;
1907         fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1908         rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1909         if (rc == MBX_NOT_FINISHED) {
1910                 spin_lock_irq(&phba->hbalock);
1911                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1912                 spin_unlock_irq(&phba->hbalock);
1913                 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1914         }
1915
1916         return;
1917 }
1918
1919 /**
1920  * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1921  * @phba: pointer to lpfc hba data structure.
1922  * @new_fcf_record: pointer to fcf record.
1923  * @boot_flag: Indicates if this record used by boot bios.
1924  * @addr_mode: The address mode to be used by this FCF
1925  * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1926  *
1927  * This routine compare the fcf record with connect list obtained from the
1928  * config region to decide if this FCF can be used for SAN discovery. It returns
1929  * 1 if this record can be used for SAN discovery else return zero. If this FCF
1930  * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1931  * is used by boot bios and addr_mode will indicate the addressing mode to be
1932  * used for this FCF when the function returns.
1933  * If the FCF record need to be used with a particular vlan id, the vlan is
1934  * set in the vlan_id on return of the function. If not VLAN tagging need to
1935  * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
1936  **/
1937 static int
1938 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1939                         struct fcf_record *new_fcf_record,
1940                         uint32_t *boot_flag, uint32_t *addr_mode,
1941                         uint16_t *vlan_id)
1942 {
1943         struct lpfc_fcf_conn_entry *conn_entry;
1944         int i, j, fcf_vlan_id = 0;
1945
1946         /* Find the lowest VLAN id in the FCF record */
1947         for (i = 0; i < 512; i++) {
1948                 if (new_fcf_record->vlan_bitmap[i]) {
1949                         fcf_vlan_id = i * 8;
1950                         j = 0;
1951                         while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1952                                 j++;
1953                                 fcf_vlan_id++;
1954                         }
1955                         break;
1956                 }
1957         }
1958
1959         /* FCF not valid/available or solicitation in progress */
1960         if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1961             !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) ||
1962             bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record))
1963                 return 0;
1964
1965         if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1966                 *boot_flag = 0;
1967                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1968                                 new_fcf_record);
1969                 if (phba->valid_vlan)
1970                         *vlan_id = phba->vlan_id;
1971                 else
1972                         *vlan_id = LPFC_FCOE_NULL_VID;
1973                 return 1;
1974         }
1975
1976         /*
1977          * If there are no FCF connection table entry, driver connect to all
1978          * FCFs.
1979          */
1980         if (list_empty(&phba->fcf_conn_rec_list)) {
1981                 *boot_flag = 0;
1982                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1983                         new_fcf_record);
1984
1985                 /*
1986                  * When there are no FCF connect entries, use driver's default
1987                  * addressing mode - FPMA.
1988                  */
1989                 if (*addr_mode & LPFC_FCF_FPMA)
1990                         *addr_mode = LPFC_FCF_FPMA;
1991
1992                 /* If FCF record report a vlan id use that vlan id */
1993                 if (fcf_vlan_id)
1994                         *vlan_id = fcf_vlan_id;
1995                 else
1996                         *vlan_id = LPFC_FCOE_NULL_VID;
1997                 return 1;
1998         }
1999
2000         list_for_each_entry(conn_entry,
2001                             &phba->fcf_conn_rec_list, list) {
2002                 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
2003                         continue;
2004
2005                 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
2006                         !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
2007                                              new_fcf_record))
2008                         continue;
2009                 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
2010                         !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
2011                                             new_fcf_record))
2012                         continue;
2013                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
2014                         /*
2015                          * If the vlan bit map does not have the bit set for the
2016                          * vlan id to be used, then it is not a match.
2017                          */
2018                         if (!(new_fcf_record->vlan_bitmap
2019                                 [conn_entry->conn_rec.vlan_tag / 8] &
2020                                 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
2021                                 continue;
2022                 }
2023
2024                 /*
2025                  * If connection record does not support any addressing mode,
2026                  * skip the FCF record.
2027                  */
2028                 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
2029                         & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
2030                         continue;
2031
2032                 /*
2033                  * Check if the connection record specifies a required
2034                  * addressing mode.
2035                  */
2036                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2037                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
2038
2039                         /*
2040                          * If SPMA required but FCF not support this continue.
2041                          */
2042                         if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2043                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
2044                                         new_fcf_record) & LPFC_FCF_SPMA))
2045                                 continue;
2046
2047                         /*
2048                          * If FPMA required but FCF not support this continue.
2049                          */
2050                         if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2051                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
2052                                 new_fcf_record) & LPFC_FCF_FPMA))
2053                                 continue;
2054                 }
2055
2056                 /*
2057                  * This fcf record matches filtering criteria.
2058                  */
2059                 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
2060                         *boot_flag = 1;
2061                 else
2062                         *boot_flag = 0;
2063
2064                 /*
2065                  * If user did not specify any addressing mode, or if the
2066                  * preferred addressing mode specified by user is not supported
2067                  * by FCF, allow fabric to pick the addressing mode.
2068                  */
2069                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
2070                                 new_fcf_record);
2071                 /*
2072                  * If the user specified a required address mode, assign that
2073                  * address mode
2074                  */
2075                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2076                         (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
2077                         *addr_mode = (conn_entry->conn_rec.flags &
2078                                 FCFCNCT_AM_SPMA) ?
2079                                 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
2080                 /*
2081                  * If the user specified a preferred address mode, use the
2082                  * addr mode only if FCF support the addr_mode.
2083                  */
2084                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2085                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
2086                         (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2087                         (*addr_mode & LPFC_FCF_SPMA))
2088                                 *addr_mode = LPFC_FCF_SPMA;
2089                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2090                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
2091                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2092                         (*addr_mode & LPFC_FCF_FPMA))
2093                                 *addr_mode = LPFC_FCF_FPMA;
2094
2095                 /* If matching connect list has a vlan id, use it */
2096                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
2097                         *vlan_id = conn_entry->conn_rec.vlan_tag;
2098                 /*
2099                  * If no vlan id is specified in connect list, use the vlan id
2100                  * in the FCF record
2101                  */
2102                 else if (fcf_vlan_id)
2103                         *vlan_id = fcf_vlan_id;
2104                 else
2105                         *vlan_id = LPFC_FCOE_NULL_VID;
2106
2107                 return 1;
2108         }
2109
2110         return 0;
2111 }
2112
2113 /**
2114  * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
2115  * @phba: pointer to lpfc hba data structure.
2116  * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
2117  *
2118  * This function check if there is any fcoe event pending while driver
2119  * scan FCF entries. If there is any pending event, it will restart the
2120  * FCF saning and return 1 else return 0.
2121  */
2122 int
2123 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
2124 {
2125         /*
2126          * If the Link is up and no FCoE events while in the
2127          * FCF discovery, no need to restart FCF discovery.
2128          */
2129         if ((phba->link_state  >= LPFC_LINK_UP) &&
2130             (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
2131                 return 0;
2132
2133         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2134                         "2768 Pending link or FCF event during current "
2135                         "handling of the previous event: link_state:x%x, "
2136                         "evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
2137                         phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
2138                         phba->fcoe_eventtag);
2139
2140         spin_lock_irq(&phba->hbalock);
2141         phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
2142         spin_unlock_irq(&phba->hbalock);
2143
2144         if (phba->link_state >= LPFC_LINK_UP) {
2145                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
2146                                 "2780 Restart FCF table scan due to "
2147                                 "pending FCF event:evt_tag_at_scan:x%x, "
2148                                 "evt_tag_current:x%x\n",
2149                                 phba->fcoe_eventtag_at_fcf_scan,
2150                                 phba->fcoe_eventtag);
2151                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
2152         } else {
2153                 /*
2154                  * Do not continue FCF discovery and clear FCF_TS_INPROG
2155                  * flag
2156                  */
2157                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
2158                                 "2833 Stop FCF discovery process due to link "
2159                                 "state change (x%x)\n", phba->link_state);
2160                 spin_lock_irq(&phba->hbalock);
2161                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
2162                 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
2163                 spin_unlock_irq(&phba->hbalock);
2164         }
2165
2166         /* Unregister the currently registered FCF if required */
2167         if (unreg_fcf) {
2168                 spin_lock_irq(&phba->hbalock);
2169                 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
2170                 spin_unlock_irq(&phba->hbalock);
2171                 lpfc_sli4_unregister_fcf(phba);
2172         }
2173         return 1;
2174 }
2175
2176 /**
2177  * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
2178  * @phba: pointer to lpfc hba data structure.
2179  * @fcf_cnt: number of eligible fcf record seen so far.
2180  *
2181  * This function makes an running random selection decision on FCF record to
2182  * use through a sequence of @fcf_cnt eligible FCF records with equal
2183  * probability. To perform integer manunipulation of random numbers with
2184  * size unit32_t, a 16-bit random number returned from get_random_u16() is
2185  * taken as the random random number generated.
2186  *
2187  * Returns true when outcome is for the newly read FCF record should be
2188  * chosen; otherwise, return false when outcome is for keeping the previously
2189  * chosen FCF record.
2190  **/
2191 static bool
2192 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
2193 {
2194         uint32_t rand_num;
2195
2196         /* Get 16-bit uniform random number */
2197         rand_num = get_random_u16();
2198
2199         /* Decision with probability 1/fcf_cnt */
2200         if ((fcf_cnt * rand_num) < 0xFFFF)
2201                 return true;
2202         else
2203                 return false;
2204 }
2205
2206 /**
2207  * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
2208  * @phba: pointer to lpfc hba data structure.
2209  * @mboxq: pointer to mailbox object.
2210  * @next_fcf_index: pointer to holder of next fcf index.
2211  *
2212  * This routine parses the non-embedded fcf mailbox command by performing the
2213  * necessarily error checking, non-embedded read FCF record mailbox command
2214  * SGE parsing, and endianness swapping.
2215  *
2216  * Returns the pointer to the new FCF record in the non-embedded mailbox
2217  * command DMA memory if successfully, other NULL.
2218  */
2219 static struct fcf_record *
2220 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
2221                              uint16_t *next_fcf_index)
2222 {
2223         void *virt_addr;
2224         struct lpfc_mbx_sge sge;
2225         struct lpfc_mbx_read_fcf_tbl *read_fcf;
2226         uint32_t shdr_status, shdr_add_status, if_type;
2227         union lpfc_sli4_cfg_shdr *shdr;
2228         struct fcf_record *new_fcf_record;
2229
2230         /* Get the first SGE entry from the non-embedded DMA memory. This
2231          * routine only uses a single SGE.
2232          */
2233         lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
2234         if (unlikely(!mboxq->sge_array)) {
2235                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2236                                 "2524 Failed to get the non-embedded SGE "
2237                                 "virtual address\n");
2238                 return NULL;
2239         }
2240         virt_addr = mboxq->sge_array->addr[0];
2241
2242         shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
2243         lpfc_sli_pcimem_bcopy(shdr, shdr,
2244                               sizeof(union lpfc_sli4_cfg_shdr));
2245         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
2246         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
2247         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
2248         if (shdr_status || shdr_add_status) {
2249                 if (shdr_status == STATUS_FCF_TABLE_EMPTY ||
2250                                         if_type == LPFC_SLI_INTF_IF_TYPE_2)
2251                         lpfc_printf_log(phba, KERN_ERR,
2252                                         LOG_TRACE_EVENT,
2253                                         "2726 READ_FCF_RECORD Indicates empty "
2254                                         "FCF table.\n");
2255                 else
2256                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2257                                         "2521 READ_FCF_RECORD mailbox failed "
2258                                         "with status x%x add_status x%x, "
2259                                         "mbx\n", shdr_status, shdr_add_status);
2260                 return NULL;
2261         }
2262
2263         /* Interpreting the returned information of the FCF record */
2264         read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
2265         lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
2266                               sizeof(struct lpfc_mbx_read_fcf_tbl));
2267         *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
2268         new_fcf_record = (struct fcf_record *)(virt_addr +
2269                           sizeof(struct lpfc_mbx_read_fcf_tbl));
2270         lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
2271                                 offsetof(struct fcf_record, vlan_bitmap));
2272         new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
2273         new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
2274
2275         return new_fcf_record;
2276 }
2277
2278 /**
2279  * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
2280  * @phba: pointer to lpfc hba data structure.
2281  * @fcf_record: pointer to the fcf record.
2282  * @vlan_id: the lowest vlan identifier associated to this fcf record.
2283  * @next_fcf_index: the index to the next fcf record in hba's fcf table.
2284  *
2285  * This routine logs the detailed FCF record if the LOG_FIP loggin is
2286  * enabled.
2287  **/
2288 static void
2289 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
2290                               struct fcf_record *fcf_record,
2291                               uint16_t vlan_id,
2292                               uint16_t next_fcf_index)
2293 {
2294         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2295                         "2764 READ_FCF_RECORD:\n"
2296                         "\tFCF_Index     : x%x\n"
2297                         "\tFCF_Avail     : x%x\n"
2298                         "\tFCF_Valid     : x%x\n"
2299                         "\tFCF_SOL       : x%x\n"
2300                         "\tFIP_Priority  : x%x\n"
2301                         "\tMAC_Provider  : x%x\n"
2302                         "\tLowest VLANID : x%x\n"
2303                         "\tFCF_MAC Addr  : x%x:%x:%x:%x:%x:%x\n"
2304                         "\tFabric_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
2305                         "\tSwitch_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
2306                         "\tNext_FCF_Index: x%x\n",
2307                         bf_get(lpfc_fcf_record_fcf_index, fcf_record),
2308                         bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
2309                         bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
2310                         bf_get(lpfc_fcf_record_fcf_sol, fcf_record),
2311                         fcf_record->fip_priority,
2312                         bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
2313                         vlan_id,
2314                         bf_get(lpfc_fcf_record_mac_0, fcf_record),
2315                         bf_get(lpfc_fcf_record_mac_1, fcf_record),
2316                         bf_get(lpfc_fcf_record_mac_2, fcf_record),
2317                         bf_get(lpfc_fcf_record_mac_3, fcf_record),
2318                         bf_get(lpfc_fcf_record_mac_4, fcf_record),
2319                         bf_get(lpfc_fcf_record_mac_5, fcf_record),
2320                         bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
2321                         bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
2322                         bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
2323                         bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
2324                         bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
2325                         bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
2326                         bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
2327                         bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
2328                         bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
2329                         bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
2330                         bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
2331                         bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
2332                         bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
2333                         bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
2334                         bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
2335                         bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
2336                         next_fcf_index);
2337 }
2338
2339 /**
2340  * lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
2341  * @phba: pointer to lpfc hba data structure.
2342  * @fcf_rec: pointer to an existing FCF record.
2343  * @new_fcf_record: pointer to a new FCF record.
2344  * @new_vlan_id: vlan id from the new FCF record.
2345  *
2346  * This function performs matching test of a new FCF record against an existing
2347  * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
2348  * will not be used as part of the FCF record matching criteria.
2349  *
2350  * Returns true if all the fields matching, otherwise returns false.
2351  */
2352 static bool
2353 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
2354                            struct lpfc_fcf_rec *fcf_rec,
2355                            struct fcf_record *new_fcf_record,
2356                            uint16_t new_vlan_id)
2357 {
2358         if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
2359                 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
2360                         return false;
2361         if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
2362                 return false;
2363         if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
2364                 return false;
2365         if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
2366                 return false;
2367         if (fcf_rec->priority != new_fcf_record->fip_priority)
2368                 return false;
2369         return true;
2370 }
2371
2372 /**
2373  * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf
2374  * @vport: Pointer to vport object.
2375  * @fcf_index: index to next fcf.
2376  *
2377  * This function processing the roundrobin fcf failover to next fcf index.
2378  * When this function is invoked, there will be a current fcf registered
2379  * for flogi.
2380  * Return: 0 for continue retrying flogi on currently registered fcf;
2381  *         1 for stop flogi on currently registered fcf;
2382  */
2383 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index)
2384 {
2385         struct lpfc_hba *phba = vport->phba;
2386         int rc;
2387
2388         if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
2389                 spin_lock_irq(&phba->hbalock);
2390                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2391                         spin_unlock_irq(&phba->hbalock);
2392                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2393                                         "2872 Devloss tmo with no eligible "
2394                                         "FCF, unregister in-use FCF (x%x) "
2395                                         "and rescan FCF table\n",
2396                                         phba->fcf.current_rec.fcf_indx);
2397                         lpfc_unregister_fcf_rescan(phba);
2398                         goto stop_flogi_current_fcf;
2399                 }
2400                 /* Mark the end to FLOGI roundrobin failover */
2401                 phba->hba_flag &= ~FCF_RR_INPROG;
2402                 /* Allow action to new fcf asynchronous event */
2403                 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
2404                 spin_unlock_irq(&phba->hbalock);
2405                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2406                                 "2865 No FCF available, stop roundrobin FCF "
2407                                 "failover and change port state:x%x/x%x\n",
2408                                 phba->pport->port_state, LPFC_VPORT_UNKNOWN);
2409                 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
2410
2411                 if (!phba->fcf.fcf_redisc_attempted) {
2412                         lpfc_unregister_fcf(phba);
2413
2414                         rc = lpfc_sli4_redisc_fcf_table(phba);
2415                         if (!rc) {
2416                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2417                                                 "3195 Rediscover FCF table\n");
2418                                 phba->fcf.fcf_redisc_attempted = 1;
2419                                 lpfc_sli4_clear_fcf_rr_bmask(phba);
2420                         } else {
2421                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2422                                                 "3196 Rediscover FCF table "
2423                                                 "failed. Status:x%x\n", rc);
2424                         }
2425                 } else {
2426                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2427                                         "3197 Already rediscover FCF table "
2428                                         "attempted. No more retry\n");
2429                 }
2430                 goto stop_flogi_current_fcf;
2431         } else {
2432                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS,
2433                                 "2794 Try FLOGI roundrobin FCF failover to "
2434                                 "(x%x)\n", fcf_index);
2435                 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index);
2436                 if (rc)
2437                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
2438                                         "2761 FLOGI roundrobin FCF failover "
2439                                         "failed (rc:x%x) to read FCF (x%x)\n",
2440                                         rc, phba->fcf.current_rec.fcf_indx);
2441                 else
2442                         goto stop_flogi_current_fcf;
2443         }
2444         return 0;
2445
2446 stop_flogi_current_fcf:
2447         lpfc_can_disctmo(vport);
2448         return 1;
2449 }
2450
2451 /**
2452  * lpfc_sli4_fcf_pri_list_del
2453  * @phba: pointer to lpfc hba data structure.
2454  * @fcf_index: the index of the fcf record to delete
2455  * This routine checks the on list flag of the fcf_index to be deleted.
2456  * If it is one the list then it is removed from the list, and the flag
2457  * is cleared. This routine grab the hbalock before removing the fcf
2458  * record from the list.
2459  **/
2460 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba,
2461                         uint16_t fcf_index)
2462 {
2463         struct lpfc_fcf_pri *new_fcf_pri;
2464
2465         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2466         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2467                 "3058 deleting idx x%x pri x%x flg x%x\n",
2468                 fcf_index, new_fcf_pri->fcf_rec.priority,
2469                  new_fcf_pri->fcf_rec.flag);
2470         spin_lock_irq(&phba->hbalock);
2471         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) {
2472                 if (phba->fcf.current_rec.priority ==
2473                                 new_fcf_pri->fcf_rec.priority)
2474                         phba->fcf.eligible_fcf_cnt--;
2475                 list_del_init(&new_fcf_pri->list);
2476                 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST;
2477         }
2478         spin_unlock_irq(&phba->hbalock);
2479 }
2480
2481 /**
2482  * lpfc_sli4_set_fcf_flogi_fail
2483  * @phba: pointer to lpfc hba data structure.
2484  * @fcf_index: the index of the fcf record to update
2485  * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED
2486  * flag so the round robin selection for the particular priority level
2487  * will try a different fcf record that does not have this bit set.
2488  * If the fcf record is re-read for any reason this flag is cleared brfore
2489  * adding it to the priority list.
2490  **/
2491 void
2492 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index)
2493 {
2494         struct lpfc_fcf_pri *new_fcf_pri;
2495         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2496         spin_lock_irq(&phba->hbalock);
2497         new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED;
2498         spin_unlock_irq(&phba->hbalock);
2499 }
2500
2501 /**
2502  * lpfc_sli4_fcf_pri_list_add
2503  * @phba: pointer to lpfc hba data structure.
2504  * @fcf_index: the index of the fcf record to add
2505  * @new_fcf_record: pointer to a new FCF record.
2506  * This routine checks the priority of the fcf_index to be added.
2507  * If it is a lower priority than the current head of the fcf_pri list
2508  * then it is added to the list in the right order.
2509  * If it is the same priority as the current head of the list then it
2510  * is added to the head of the list and its bit in the rr_bmask is set.
2511  * If the fcf_index to be added is of a higher priority than the current
2512  * head of the list then the rr_bmask is cleared, its bit is set in the
2513  * rr_bmask and it is added to the head of the list.
2514  * returns:
2515  * 0=success 1=failure
2516  **/
2517 static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba,
2518         uint16_t fcf_index,
2519         struct fcf_record *new_fcf_record)
2520 {
2521         uint16_t current_fcf_pri;
2522         uint16_t last_index;
2523         struct lpfc_fcf_pri *fcf_pri;
2524         struct lpfc_fcf_pri *next_fcf_pri;
2525         struct lpfc_fcf_pri *new_fcf_pri;
2526         int ret;
2527
2528         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2529         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2530                 "3059 adding idx x%x pri x%x flg x%x\n",
2531                 fcf_index, new_fcf_record->fip_priority,
2532                  new_fcf_pri->fcf_rec.flag);
2533         spin_lock_irq(&phba->hbalock);
2534         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST)
2535                 list_del_init(&new_fcf_pri->list);
2536         new_fcf_pri->fcf_rec.fcf_index = fcf_index;
2537         new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
2538         if (list_empty(&phba->fcf.fcf_pri_list)) {
2539                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2540                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2541                                 new_fcf_pri->fcf_rec.fcf_index);
2542                 goto out;
2543         }
2544
2545         last_index = find_first_bit(phba->fcf.fcf_rr_bmask,
2546                                 LPFC_SLI4_FCF_TBL_INDX_MAX);
2547         if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
2548                 ret = 0; /* Empty rr list */
2549                 goto out;
2550         }
2551         current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority;
2552         if (new_fcf_pri->fcf_rec.priority <=  current_fcf_pri) {
2553                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2554                 if (new_fcf_pri->fcf_rec.priority <  current_fcf_pri) {
2555                         memset(phba->fcf.fcf_rr_bmask, 0,
2556                                 sizeof(*phba->fcf.fcf_rr_bmask));
2557                         /* fcfs_at_this_priority_level = 1; */
2558                         phba->fcf.eligible_fcf_cnt = 1;
2559                 } else
2560                         /* fcfs_at_this_priority_level++; */
2561                         phba->fcf.eligible_fcf_cnt++;
2562                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2563                                 new_fcf_pri->fcf_rec.fcf_index);
2564                 goto out;
2565         }
2566
2567         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
2568                                 &phba->fcf.fcf_pri_list, list) {
2569                 if (new_fcf_pri->fcf_rec.priority <=
2570                                 fcf_pri->fcf_rec.priority) {
2571                         if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list)
2572                                 list_add(&new_fcf_pri->list,
2573                                                 &phba->fcf.fcf_pri_list);
2574                         else
2575                                 list_add(&new_fcf_pri->list,
2576                                          &((struct lpfc_fcf_pri *)
2577                                         fcf_pri->list.prev)->list);
2578                         ret = 0;
2579                         goto out;
2580                 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list
2581                         || new_fcf_pri->fcf_rec.priority <
2582                                 next_fcf_pri->fcf_rec.priority) {
2583                         list_add(&new_fcf_pri->list, &fcf_pri->list);
2584                         ret = 0;
2585                         goto out;
2586                 }
2587                 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority)
2588                         continue;
2589
2590         }
2591         ret = 1;
2592 out:
2593         /* we use = instead of |= to clear the FLOGI_FAILED flag. */
2594         new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST;
2595         spin_unlock_irq(&phba->hbalock);
2596         return ret;
2597 }
2598
2599 /**
2600  * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
2601  * @phba: pointer to lpfc hba data structure.
2602  * @mboxq: pointer to mailbox object.
2603  *
2604  * This function iterates through all the fcf records available in
2605  * HBA and chooses the optimal FCF record for discovery. After finding
2606  * the FCF for discovery it registers the FCF record and kicks start
2607  * discovery.
2608  * If FCF_IN_USE flag is set in currently used FCF, the routine tries to
2609  * use an FCF record which matches fabric name and mac address of the
2610  * currently used FCF record.
2611  * If the driver supports only one FCF, it will try to use the FCF record
2612  * used by BOOT_BIOS.
2613  */
2614 void
2615 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2616 {
2617         struct fcf_record *new_fcf_record;
2618         uint32_t boot_flag, addr_mode;
2619         uint16_t fcf_index, next_fcf_index;
2620         struct lpfc_fcf_rec *fcf_rec = NULL;
2621         uint16_t vlan_id = LPFC_FCOE_NULL_VID;
2622         bool select_new_fcf;
2623         int rc;
2624
2625         /* If there is pending FCoE event restart FCF table scan */
2626         if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) {
2627                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2628                 return;
2629         }
2630
2631         /* Parse the FCF record from the non-embedded mailbox command */
2632         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2633                                                       &next_fcf_index);
2634         if (!new_fcf_record) {
2635                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2636                                 "2765 Mailbox command READ_FCF_RECORD "
2637                                 "failed to retrieve a FCF record.\n");
2638                 /* Let next new FCF event trigger fast failover */
2639                 spin_lock_irq(&phba->hbalock);
2640                 phba->hba_flag &= ~FCF_TS_INPROG;
2641                 spin_unlock_irq(&phba->hbalock);
2642                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2643                 return;
2644         }
2645
2646         /* Check the FCF record against the connection list */
2647         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2648                                       &addr_mode, &vlan_id);
2649
2650         /* Log the FCF record information if turned on */
2651         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2652                                       next_fcf_index);
2653
2654         /*
2655          * If the fcf record does not match with connect list entries
2656          * read the next entry; otherwise, this is an eligible FCF
2657          * record for roundrobin FCF failover.
2658          */
2659         if (!rc) {
2660                 lpfc_sli4_fcf_pri_list_del(phba,
2661                                         bf_get(lpfc_fcf_record_fcf_index,
2662                                                new_fcf_record));
2663                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2664                                 "2781 FCF (x%x) failed connection "
2665                                 "list check: (x%x/x%x/%x)\n",
2666                                 bf_get(lpfc_fcf_record_fcf_index,
2667                                        new_fcf_record),
2668                                 bf_get(lpfc_fcf_record_fcf_avail,
2669                                        new_fcf_record),
2670                                 bf_get(lpfc_fcf_record_fcf_valid,
2671                                        new_fcf_record),
2672                                 bf_get(lpfc_fcf_record_fcf_sol,
2673                                        new_fcf_record));
2674                 if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
2675                     lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2676                     new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
2677                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) !=
2678                             phba->fcf.current_rec.fcf_indx) {
2679                                 lpfc_printf_log(phba, KERN_ERR,
2680                                                 LOG_TRACE_EVENT,
2681                                         "2862 FCF (x%x) matches property "
2682                                         "of in-use FCF (x%x)\n",
2683                                         bf_get(lpfc_fcf_record_fcf_index,
2684                                                new_fcf_record),
2685                                         phba->fcf.current_rec.fcf_indx);
2686                                 goto read_next_fcf;
2687                         }
2688                         /*
2689                          * In case the current in-use FCF record becomes
2690                          * invalid/unavailable during FCF discovery that
2691                          * was not triggered by fast FCF failover process,
2692                          * treat it as fast FCF failover.
2693                          */
2694                         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
2695                             !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2696                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2697                                                 "2835 Invalid in-use FCF "
2698                                                 "(x%x), enter FCF failover "
2699                                                 "table scan.\n",
2700                                                 phba->fcf.current_rec.fcf_indx);
2701                                 spin_lock_irq(&phba->hbalock);
2702                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2703                                 spin_unlock_irq(&phba->hbalock);
2704                                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2705                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2706                                                 LPFC_FCOE_FCF_GET_FIRST);
2707                                 return;
2708                         }
2709                 }
2710                 goto read_next_fcf;
2711         } else {
2712                 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2713                 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index,
2714                                                         new_fcf_record);
2715                 if (rc)
2716                         goto read_next_fcf;
2717         }
2718
2719         /*
2720          * If this is not the first FCF discovery of the HBA, use last
2721          * FCF record for the discovery. The condition that a rescan
2722          * matches the in-use FCF record: fabric name, switch name, mac
2723          * address, and vlan_id.
2724          */
2725         spin_lock_irq(&phba->hbalock);
2726         if (phba->fcf.fcf_flag & FCF_IN_USE) {
2727                 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2728                         lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2729                     new_fcf_record, vlan_id)) {
2730                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) ==
2731                             phba->fcf.current_rec.fcf_indx) {
2732                                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2733                                 if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
2734                                         /* Stop FCF redisc wait timer */
2735                                         __lpfc_sli4_stop_fcf_redisc_wait_timer(
2736                                                                         phba);
2737                                 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2738                                         /* Fast failover, mark completed */
2739                                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2740                                 spin_unlock_irq(&phba->hbalock);
2741                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2742                                                 "2836 New FCF matches in-use "
2743                                                 "FCF (x%x), port_state:x%x, "
2744                                                 "fc_flag:x%x\n",
2745                                                 phba->fcf.current_rec.fcf_indx,
2746                                                 phba->pport->port_state,
2747                                                 phba->pport->fc_flag);
2748                                 goto out;
2749                         } else
2750                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2751                                         "2863 New FCF (x%x) matches "
2752                                         "property of in-use FCF (x%x)\n",
2753                                         bf_get(lpfc_fcf_record_fcf_index,
2754                                                new_fcf_record),
2755                                         phba->fcf.current_rec.fcf_indx);
2756                 }
2757                 /*
2758                  * Read next FCF record from HBA searching for the matching
2759                  * with in-use record only if not during the fast failover
2760                  * period. In case of fast failover period, it shall try to
2761                  * determine whether the FCF record just read should be the
2762                  * next candidate.
2763                  */
2764                 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2765                         spin_unlock_irq(&phba->hbalock);
2766                         goto read_next_fcf;
2767                 }
2768         }
2769         /*
2770          * Update on failover FCF record only if it's in FCF fast-failover
2771          * period; otherwise, update on current FCF record.
2772          */
2773         if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2774                 fcf_rec = &phba->fcf.failover_rec;
2775         else
2776                 fcf_rec = &phba->fcf.current_rec;
2777
2778         if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
2779                 /*
2780                  * If the driver FCF record does not have boot flag
2781                  * set and new hba fcf record has boot flag set, use
2782                  * the new hba fcf record.
2783                  */
2784                 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
2785                         /* Choose this FCF record */
2786                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2787                                         "2837 Update current FCF record "
2788                                         "(x%x) with new FCF record (x%x)\n",
2789                                         fcf_rec->fcf_indx,
2790                                         bf_get(lpfc_fcf_record_fcf_index,
2791                                         new_fcf_record));
2792                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2793                                         addr_mode, vlan_id, BOOT_ENABLE);
2794                         spin_unlock_irq(&phba->hbalock);
2795                         goto read_next_fcf;
2796                 }
2797                 /*
2798                  * If the driver FCF record has boot flag set and the
2799                  * new hba FCF record does not have boot flag, read
2800                  * the next FCF record.
2801                  */
2802                 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
2803                         spin_unlock_irq(&phba->hbalock);
2804                         goto read_next_fcf;
2805                 }
2806                 /*
2807                  * If the new hba FCF record has lower priority value
2808                  * than the driver FCF record, use the new record.
2809                  */
2810                 if (new_fcf_record->fip_priority < fcf_rec->priority) {
2811                         /* Choose the new FCF record with lower priority */
2812                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2813                                         "2838 Update current FCF record "
2814                                         "(x%x) with new FCF record (x%x)\n",
2815                                         fcf_rec->fcf_indx,
2816                                         bf_get(lpfc_fcf_record_fcf_index,
2817                                                new_fcf_record));
2818                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2819                                         addr_mode, vlan_id, 0);
2820                         /* Reset running random FCF selection count */
2821                         phba->fcf.eligible_fcf_cnt = 1;
2822                 } else if (new_fcf_record->fip_priority == fcf_rec->priority) {
2823                         /* Update running random FCF selection count */
2824                         phba->fcf.eligible_fcf_cnt++;
2825                         select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
2826                                                 phba->fcf.eligible_fcf_cnt);
2827                         if (select_new_fcf) {
2828                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2829                                         "2839 Update current FCF record "
2830                                         "(x%x) with new FCF record (x%x)\n",
2831                                         fcf_rec->fcf_indx,
2832                                         bf_get(lpfc_fcf_record_fcf_index,
2833                                                new_fcf_record));
2834                                 /* Choose the new FCF by random selection */
2835                                 __lpfc_update_fcf_record(phba, fcf_rec,
2836                                                          new_fcf_record,
2837                                                          addr_mode, vlan_id, 0);
2838                         }
2839                 }
2840                 spin_unlock_irq(&phba->hbalock);
2841                 goto read_next_fcf;
2842         }
2843         /*
2844          * This is the first suitable FCF record, choose this record for
2845          * initial best-fit FCF.
2846          */
2847         if (fcf_rec) {
2848                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2849                                 "2840 Update initial FCF candidate "
2850                                 "with FCF (x%x)\n",
2851                                 bf_get(lpfc_fcf_record_fcf_index,
2852                                        new_fcf_record));
2853                 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2854                                          addr_mode, vlan_id, (boot_flag ?
2855                                          BOOT_ENABLE : 0));
2856                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2857                 /* Setup initial running random FCF selection count */
2858                 phba->fcf.eligible_fcf_cnt = 1;
2859         }
2860         spin_unlock_irq(&phba->hbalock);
2861         goto read_next_fcf;
2862
2863 read_next_fcf:
2864         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2865         if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
2866                 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
2867                         /*
2868                          * Case of FCF fast failover scan
2869                          */
2870
2871                         /*
2872                          * It has not found any suitable FCF record, cancel
2873                          * FCF scan inprogress, and do nothing
2874                          */
2875                         if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
2876                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2877                                                "2782 No suitable FCF found: "
2878                                                "(x%x/x%x)\n",
2879                                                phba->fcoe_eventtag_at_fcf_scan,
2880                                                bf_get(lpfc_fcf_record_fcf_index,
2881                                                       new_fcf_record));
2882                                 spin_lock_irq(&phba->hbalock);
2883                                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2884                                         phba->hba_flag &= ~FCF_TS_INPROG;
2885                                         spin_unlock_irq(&phba->hbalock);
2886                                         /* Unregister in-use FCF and rescan */
2887                                         lpfc_printf_log(phba, KERN_INFO,
2888                                                         LOG_FIP,
2889                                                         "2864 On devloss tmo "
2890                                                         "unreg in-use FCF and "
2891                                                         "rescan FCF table\n");
2892                                         lpfc_unregister_fcf_rescan(phba);
2893                                         return;
2894                                 }
2895                                 /*
2896                                  * Let next new FCF event trigger fast failover
2897                                  */
2898                                 phba->hba_flag &= ~FCF_TS_INPROG;
2899                                 spin_unlock_irq(&phba->hbalock);
2900                                 return;
2901                         }
2902                         /*
2903                          * It has found a suitable FCF record that is not
2904                          * the same as in-use FCF record, unregister the
2905                          * in-use FCF record, replace the in-use FCF record
2906                          * with the new FCF record, mark FCF fast failover
2907                          * completed, and then start register the new FCF
2908                          * record.
2909                          */
2910
2911                         /* Unregister the current in-use FCF record */
2912                         lpfc_unregister_fcf(phba);
2913
2914                         /* Replace in-use record with the new record */
2915                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2916                                         "2842 Replace in-use FCF (x%x) "
2917                                         "with failover FCF (x%x)\n",
2918                                         phba->fcf.current_rec.fcf_indx,
2919                                         phba->fcf.failover_rec.fcf_indx);
2920                         memcpy(&phba->fcf.current_rec,
2921                                &phba->fcf.failover_rec,
2922                                sizeof(struct lpfc_fcf_rec));
2923                         /*
2924                          * Mark the fast FCF failover rediscovery completed
2925                          * and the start of the first round of the roundrobin
2926                          * FCF failover.
2927                          */
2928                         spin_lock_irq(&phba->hbalock);
2929                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2930                         spin_unlock_irq(&phba->hbalock);
2931                         /* Register to the new FCF record */
2932                         lpfc_register_fcf(phba);
2933                 } else {
2934                         /*
2935                          * In case of transaction period to fast FCF failover,
2936                          * do nothing when search to the end of the FCF table.
2937                          */
2938                         if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
2939                             (phba->fcf.fcf_flag & FCF_REDISC_PEND))
2940                                 return;
2941
2942                         if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2943                                 phba->fcf.fcf_flag & FCF_IN_USE) {
2944                                 /*
2945                                  * In case the current in-use FCF record no
2946                                  * longer existed during FCF discovery that
2947                                  * was not triggered by fast FCF failover
2948                                  * process, treat it as fast FCF failover.
2949                                  */
2950                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2951                                                 "2841 In-use FCF record (x%x) "
2952                                                 "not reported, entering fast "
2953                                                 "FCF failover mode scanning.\n",
2954                                                 phba->fcf.current_rec.fcf_indx);
2955                                 spin_lock_irq(&phba->hbalock);
2956                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2957                                 spin_unlock_irq(&phba->hbalock);
2958                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2959                                                 LPFC_FCOE_FCF_GET_FIRST);
2960                                 return;
2961                         }
2962                         /* Register to the new FCF record */
2963                         lpfc_register_fcf(phba);
2964                 }
2965         } else
2966                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
2967         return;
2968
2969 out:
2970         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2971         lpfc_register_fcf(phba);
2972
2973         return;
2974 }
2975
2976 /**
2977  * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler
2978  * @phba: pointer to lpfc hba data structure.
2979  * @mboxq: pointer to mailbox object.
2980  *
2981  * This is the callback function for FLOGI failure roundrobin FCF failover
2982  * read FCF record mailbox command from the eligible FCF record bmask for
2983  * performing the failover. If the FCF read back is not valid/available, it
2984  * fails through to retrying FLOGI to the currently registered FCF again.
2985  * Otherwise, if the FCF read back is valid and available, it will set the
2986  * newly read FCF record to the failover FCF record, unregister currently
2987  * registered FCF record, copy the failover FCF record to the current
2988  * FCF record, and then register the current FCF record before proceeding
2989  * to trying FLOGI on the new failover FCF.
2990  */
2991 void
2992 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2993 {
2994         struct fcf_record *new_fcf_record;
2995         uint32_t boot_flag, addr_mode;
2996         uint16_t next_fcf_index, fcf_index;
2997         uint16_t current_fcf_index;
2998         uint16_t vlan_id = LPFC_FCOE_NULL_VID;
2999         int rc;
3000
3001         /* If link state is not up, stop the roundrobin failover process */
3002         if (phba->link_state < LPFC_LINK_UP) {
3003                 spin_lock_irq(&phba->hbalock);
3004                 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
3005                 phba->hba_flag &= ~FCF_RR_INPROG;
3006                 spin_unlock_irq(&phba->hbalock);
3007                 goto out;
3008         }
3009
3010         /* Parse the FCF record from the non-embedded mailbox command */
3011         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
3012                                                       &next_fcf_index);
3013         if (!new_fcf_record) {
3014                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
3015                                 "2766 Mailbox command READ_FCF_RECORD "
3016                                 "failed to retrieve a FCF record. "
3017                                 "hba_flg x%x fcf_flg x%x\n", phba->hba_flag,
3018                                 phba->fcf.fcf_flag);
3019                 lpfc_unregister_fcf_rescan(phba);
3020                 goto out;
3021         }
3022
3023         /* Get the needed parameters from FCF record */
3024         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
3025                                       &addr_mode, &vlan_id);
3026
3027         /* Log the FCF record information if turned on */
3028         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
3029                                       next_fcf_index);
3030
3031         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
3032         if (!rc) {
3033                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3034                                 "2848 Remove ineligible FCF (x%x) from "
3035                                 "from roundrobin bmask\n", fcf_index);
3036                 /* Clear roundrobin bmask bit for ineligible FCF */
3037                 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index);
3038                 /* Perform next round of roundrobin FCF failover */
3039                 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
3040                 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index);
3041                 if (rc)
3042                         goto out;
3043                 goto error_out;
3044         }
3045
3046         if (fcf_index == phba->fcf.current_rec.fcf_indx) {
3047                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3048                                 "2760 Perform FLOGI roundrobin FCF failover: "
3049                                 "FCF (x%x) back to FCF (x%x)\n",
3050                                 phba->fcf.current_rec.fcf_indx, fcf_index);
3051                 /* Wait 500 ms before retrying FLOGI to current FCF */
3052                 msleep(500);
3053                 lpfc_issue_init_vfi(phba->pport);
3054                 goto out;
3055         }
3056
3057         /* Upload new FCF record to the failover FCF record */
3058         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3059                         "2834 Update current FCF (x%x) with new FCF (x%x)\n",
3060                         phba->fcf.failover_rec.fcf_indx, fcf_index);
3061         spin_lock_irq(&phba->hbalock);
3062         __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
3063                                  new_fcf_record, addr_mode, vlan_id,
3064                                  (boot_flag ? BOOT_ENABLE : 0));
3065         spin_unlock_irq(&phba->hbalock);
3066
3067         current_fcf_index = phba->fcf.current_rec.fcf_indx;
3068
3069         /* Unregister the current in-use FCF record */
3070         lpfc_unregister_fcf(phba);
3071
3072         /* Replace in-use record with the new record */
3073         memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
3074                sizeof(struct lpfc_fcf_rec));
3075
3076         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3077                         "2783 Perform FLOGI roundrobin FCF failover: FCF "
3078                         "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index);
3079
3080 error_out:
3081         lpfc_register_fcf(phba);
3082 out:
3083         lpfc_sli4_mbox_cmd_free(phba, mboxq);
3084 }
3085
3086 /**
3087  * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
3088  * @phba: pointer to lpfc hba data structure.
3089  * @mboxq: pointer to mailbox object.
3090  *
3091  * This is the callback function of read FCF record mailbox command for
3092  * updating the eligible FCF bmask for FLOGI failure roundrobin FCF
3093  * failover when a new FCF event happened. If the FCF read back is
3094  * valid/available and it passes the connection list check, it updates
3095  * the bmask for the eligible FCF record for roundrobin failover.
3096  */
3097 void
3098 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3099 {
3100         struct fcf_record *new_fcf_record;
3101         uint32_t boot_flag, addr_mode;
3102         uint16_t fcf_index, next_fcf_index;
3103         uint16_t vlan_id =  LPFC_FCOE_NULL_VID;
3104         int rc;
3105
3106         /* If link state is not up, no need to proceed */
3107         if (phba->link_state < LPFC_LINK_UP)
3108                 goto out;
3109
3110         /* If FCF discovery period is over, no need to proceed */
3111         if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
3112                 goto out;
3113
3114         /* Parse the FCF record from the non-embedded mailbox command */
3115         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
3116                                                       &next_fcf_index);
3117         if (!new_fcf_record) {
3118                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3119                                 "2767 Mailbox command READ_FCF_RECORD "
3120                                 "failed to retrieve a FCF record.\n");
3121                 goto out;
3122         }
3123
3124         /* Check the connection list for eligibility */
3125         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
3126                                       &addr_mode, &vlan_id);
3127
3128         /* Log the FCF record information if turned on */
3129         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
3130                                       next_fcf_index);
3131
3132         if (!rc)
3133                 goto out;
3134
3135         /* Update the eligible FCF record index bmask */
3136         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
3137
3138         rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record);
3139
3140 out:
3141         lpfc_sli4_mbox_cmd_free(phba, mboxq);
3142 }
3143
3144 /**
3145  * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command.
3146  * @phba: pointer to lpfc hba data structure.
3147  * @mboxq: pointer to mailbox data structure.
3148  *
3149  * This function handles completion of init vfi mailbox command.
3150  */
3151 static void
3152 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3153 {
3154         struct lpfc_vport *vport = mboxq->vport;
3155
3156         /*
3157          * VFI not supported on interface type 0, just do the flogi
3158          * Also continue if the VFI is in use - just use the same one.
3159          */
3160         if (mboxq->u.mb.mbxStatus &&
3161             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
3162                         LPFC_SLI_INTF_IF_TYPE_0) &&
3163             mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
3164                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3165                                  "2891 Init VFI mailbox failed 0x%x\n",
3166                                  mboxq->u.mb.mbxStatus);
3167                 mempool_free(mboxq, phba->mbox_mem_pool);
3168                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3169                 return;
3170         }
3171
3172         lpfc_initial_flogi(vport);
3173         mempool_free(mboxq, phba->mbox_mem_pool);
3174         return;
3175 }
3176
3177 /**
3178  * lpfc_issue_init_vfi - Issue init_vfi mailbox command.
3179  * @vport: pointer to lpfc_vport data structure.
3180  *
3181  * This function issue a init_vfi mailbox command to initialize the VFI and
3182  * VPI for the physical port.
3183  */
3184 void
3185 lpfc_issue_init_vfi(struct lpfc_vport *vport)
3186 {
3187         LPFC_MBOXQ_t *mboxq;
3188         int rc;
3189         struct lpfc_hba *phba = vport->phba;
3190
3191         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3192         if (!mboxq) {
3193                 lpfc_printf_vlog(vport, KERN_ERR,
3194                         LOG_TRACE_EVENT, "2892 Failed to allocate "
3195                         "init_vfi mailbox\n");
3196                 return;
3197         }
3198         lpfc_init_vfi(mboxq, vport);
3199         mboxq->mbox_cmpl = lpfc_init_vfi_cmpl;
3200         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
3201         if (rc == MBX_NOT_FINISHED) {
3202                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3203                                  "2893 Failed to issue init_vfi mailbox\n");
3204                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
3205         }
3206 }
3207
3208 /**
3209  * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
3210  * @phba: pointer to lpfc hba data structure.
3211  * @mboxq: pointer to mailbox data structure.
3212  *
3213  * This function handles completion of init vpi mailbox command.
3214  */
3215 void
3216 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3217 {
3218         struct lpfc_vport *vport = mboxq->vport;
3219         struct lpfc_nodelist *ndlp;
3220         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3221
3222         if (mboxq->u.mb.mbxStatus) {
3223                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3224                                  "2609 Init VPI mailbox failed 0x%x\n",
3225                                  mboxq->u.mb.mbxStatus);
3226                 mempool_free(mboxq, phba->mbox_mem_pool);
3227                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3228                 return;
3229         }
3230         spin_lock_irq(shost->host_lock);
3231         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
3232         spin_unlock_irq(shost->host_lock);
3233
3234         /* If this port is physical port or FDISC is done, do reg_vpi */
3235         if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
3236                         ndlp = lpfc_findnode_did(vport, Fabric_DID);
3237                         if (!ndlp)
3238                                 lpfc_printf_vlog(vport, KERN_ERR,
3239                                         LOG_TRACE_EVENT,
3240                                         "2731 Cannot find fabric "
3241                                         "controller node\n");
3242                         else
3243                                 lpfc_register_new_vport(phba, vport, ndlp);
3244                         mempool_free(mboxq, phba->mbox_mem_pool);
3245                         return;
3246         }
3247
3248         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
3249                 lpfc_initial_fdisc(vport);
3250         else {
3251                 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
3252                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3253                                  "2606 No NPIV Fabric support\n");
3254         }
3255         mempool_free(mboxq, phba->mbox_mem_pool);
3256         return;
3257 }
3258
3259 /**
3260  * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
3261  * @vport: pointer to lpfc_vport data structure.
3262  *
3263  * This function issue a init_vpi mailbox command to initialize
3264  * VPI for the vport.
3265  */
3266 void
3267 lpfc_issue_init_vpi(struct lpfc_vport *vport)
3268 {
3269         LPFC_MBOXQ_t *mboxq;
3270         int rc, vpi;
3271
3272         if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) {
3273                 vpi = lpfc_alloc_vpi(vport->phba);
3274                 if (!vpi) {
3275                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3276                                          "3303 Failed to obtain vport vpi\n");
3277                         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3278                         return;
3279                 }
3280                 vport->vpi = vpi;
3281         }
3282
3283         mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
3284         if (!mboxq) {
3285                 lpfc_printf_vlog(vport, KERN_ERR,
3286                         LOG_TRACE_EVENT, "2607 Failed to allocate "
3287                         "init_vpi mailbox\n");
3288                 return;
3289         }
3290         lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
3291         mboxq->vport = vport;
3292         mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
3293         rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
3294         if (rc == MBX_NOT_FINISHED) {
3295                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3296                                  "2608 Failed to issue init_vpi mailbox\n");
3297                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
3298         }
3299 }
3300
3301 /**
3302  * lpfc_start_fdiscs - send fdiscs for each vports on this port.
3303  * @phba: pointer to lpfc hba data structure.
3304  *
3305  * This function loops through the list of vports on the @phba and issues an
3306  * FDISC if possible.
3307  */
3308 void
3309 lpfc_start_fdiscs(struct lpfc_hba *phba)
3310 {
3311         struct lpfc_vport **vports;
3312         int i;
3313
3314         vports = lpfc_create_vport_work_array(phba);
3315         if (vports != NULL) {
3316                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3317                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
3318                                 continue;
3319                         /* There are no vpi for this vport */
3320                         if (vports[i]->vpi > phba->max_vpi) {
3321                                 lpfc_vport_set_state(vports[i],
3322                                                      FC_VPORT_FAILED);
3323                                 continue;
3324                         }
3325                         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3326                                 lpfc_vport_set_state(vports[i],
3327                                                      FC_VPORT_LINKDOWN);
3328                                 continue;
3329                         }
3330                         if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
3331                                 lpfc_issue_init_vpi(vports[i]);
3332                                 continue;
3333                         }
3334                         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
3335                                 lpfc_initial_fdisc(vports[i]);
3336                         else {
3337                                 lpfc_vport_set_state(vports[i],
3338                                                      FC_VPORT_NO_FABRIC_SUPP);
3339                                 lpfc_printf_vlog(vports[i], KERN_ERR,
3340                                                  LOG_TRACE_EVENT,
3341                                                  "0259 No NPIV "
3342                                                  "Fabric support\n");
3343                         }
3344                 }
3345         }
3346         lpfc_destroy_vport_work_array(phba, vports);
3347 }
3348
3349 void
3350 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3351 {
3352         struct lpfc_vport *vport = mboxq->vport;
3353         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3354
3355         /*
3356          * VFI not supported for interface type 0, so ignore any mailbox
3357          * error (except VFI in use) and continue with the discovery.
3358          */
3359         if (mboxq->u.mb.mbxStatus &&
3360             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
3361                         LPFC_SLI_INTF_IF_TYPE_0) &&
3362             mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
3363                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3364                                  "2018 REG_VFI mbxStatus error x%x "
3365                                  "HBA state x%x\n",
3366                                  mboxq->u.mb.mbxStatus, vport->port_state);
3367                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3368                         /* FLOGI failed, use loop map to make discovery list */
3369                         lpfc_disc_list_loopmap(vport);
3370                         /* Start discovery */
3371                         lpfc_disc_start(vport);
3372                         goto out_free_mem;
3373                 }
3374                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3375                 goto out_free_mem;
3376         }
3377
3378         /* If the VFI is already registered, there is nothing else to do
3379          * Unless this was a VFI update and we are in PT2PT mode, then
3380          * we should drop through to set the port state to ready.
3381          */
3382         if (vport->fc_flag & FC_VFI_REGISTERED)
3383                 if (!(phba->sli_rev == LPFC_SLI_REV4 &&
3384                       vport->fc_flag & FC_PT2PT))
3385                         goto out_free_mem;
3386
3387         /* The VPI is implicitly registered when the VFI is registered */
3388         spin_lock_irq(shost->host_lock);
3389         vport->vpi_state |= LPFC_VPI_REGISTERED;
3390         vport->fc_flag |= FC_VFI_REGISTERED;
3391         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3392         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
3393         spin_unlock_irq(shost->host_lock);
3394
3395         /* In case SLI4 FC loopback test, we are ready */
3396         if ((phba->sli_rev == LPFC_SLI_REV4) &&
3397             (phba->link_flag & LS_LOOPBACK_MODE)) {
3398                 phba->link_state = LPFC_HBA_READY;
3399                 goto out_free_mem;
3400         }
3401
3402         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3403                          "3313 cmpl reg vfi  port_state:%x fc_flag:%x myDid:%x "
3404                          "alpacnt:%d LinkState:%x topology:%x\n",
3405                          vport->port_state, vport->fc_flag, vport->fc_myDID,
3406                          vport->phba->alpa_map[0],
3407                          phba->link_state, phba->fc_topology);
3408
3409         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3410                 /*
3411                  * For private loop or for NPort pt2pt,
3412                  * just start discovery and we are done.
3413                  */
3414                 if ((vport->fc_flag & FC_PT2PT) ||
3415                     ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) &&
3416                     !(vport->fc_flag & FC_PUBLIC_LOOP))) {
3417
3418                         /* Use loop map to make discovery list */
3419                         lpfc_disc_list_loopmap(vport);
3420                         /* Start discovery */
3421                         if (vport->fc_flag & FC_PT2PT)
3422                                 vport->port_state = LPFC_VPORT_READY;
3423                         else
3424                                 lpfc_disc_start(vport);
3425                 } else {
3426                         lpfc_start_fdiscs(phba);
3427                         lpfc_do_scr_ns_plogi(phba, vport);
3428                 }
3429         }
3430
3431 out_free_mem:
3432         lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED);
3433 }
3434
3435 static void
3436 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3437 {
3438         MAILBOX_t *mb = &pmb->u.mb;
3439         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3440         struct lpfc_vport  *vport = pmb->vport;
3441         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3442         struct serv_parm *sp = &vport->fc_sparam;
3443         uint32_t ed_tov;
3444
3445         /* Check for error */
3446         if (mb->mbxStatus) {
3447                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
3448                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3449                                  "0319 READ_SPARAM mbxStatus error x%x "
3450                                  "hba state x%x>\n",
3451                                  mb->mbxStatus, vport->port_state);
3452                 lpfc_linkdown(phba);
3453                 goto out;
3454         }
3455
3456         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
3457                sizeof (struct serv_parm));
3458
3459         ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
3460         if (sp->cmn.edtovResolution)    /* E_D_TOV ticks are in nanoseconds */
3461                 ed_tov = (ed_tov + 999999) / 1000000;
3462
3463         phba->fc_edtov = ed_tov;
3464         phba->fc_ratov = (2 * ed_tov) / 1000;
3465         if (phba->fc_ratov < FF_DEF_RATOV) {
3466                 /* RA_TOV should be atleast 10sec for initial flogi */
3467                 phba->fc_ratov = FF_DEF_RATOV;
3468         }
3469
3470         lpfc_update_vport_wwn(vport);
3471         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
3472         if (vport->port_type == LPFC_PHYSICAL_PORT) {
3473                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
3474                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
3475         }
3476
3477         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
3478
3479         /* Check if sending the FLOGI is being deferred to after we get
3480          * up to date CSPs from MBX_READ_SPARAM.
3481          */
3482         if (phba->hba_flag & HBA_DEFER_FLOGI) {
3483                 lpfc_initial_flogi(vport);
3484                 phba->hba_flag &= ~HBA_DEFER_FLOGI;
3485         }
3486         return;
3487
3488 out:
3489         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
3490         lpfc_issue_clear_la(phba, vport);
3491 }
3492
3493 static void
3494 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
3495 {
3496         struct lpfc_vport *vport = phba->pport;
3497         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
3498         struct Scsi_Host *shost;
3499         int i;
3500         int rc;
3501         struct fcf_record *fcf_record;
3502         uint32_t fc_flags = 0;
3503         unsigned long iflags;
3504
3505         spin_lock_irqsave(&phba->hbalock, iflags);
3506         phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la);
3507
3508         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3509                 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) {
3510                 case LPFC_LINK_SPEED_1GHZ:
3511                 case LPFC_LINK_SPEED_2GHZ:
3512                 case LPFC_LINK_SPEED_4GHZ:
3513                 case LPFC_LINK_SPEED_8GHZ:
3514                 case LPFC_LINK_SPEED_10GHZ:
3515                 case LPFC_LINK_SPEED_16GHZ:
3516                 case LPFC_LINK_SPEED_32GHZ:
3517                 case LPFC_LINK_SPEED_64GHZ:
3518                 case LPFC_LINK_SPEED_128GHZ:
3519                 case LPFC_LINK_SPEED_256GHZ:
3520                         break;
3521                 default:
3522                         phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN;
3523                         break;
3524                 }
3525         }
3526
3527         if (phba->fc_topology &&
3528             phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) {
3529                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
3530                                 "3314 Toplogy changed was 0x%x is 0x%x\n",
3531                                 phba->fc_topology,
3532                                 bf_get(lpfc_mbx_read_top_topology, la));
3533                 phba->fc_topology_changed = 1;
3534         }
3535
3536         phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la);
3537         phba->link_flag &= ~(LS_NPIV_FAB_SUPPORTED | LS_CT_VEN_RPA);
3538
3539         shost = lpfc_shost_from_vport(vport);
3540         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3541                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
3542
3543                 /* if npiv is enabled and this adapter supports npiv log
3544                  * a message that npiv is not supported in this topology
3545                  */
3546                 if (phba->cfg_enable_npiv && phba->max_vpi)
3547                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3548                                 "1309 Link Up Event npiv not supported in loop "
3549                                 "topology\n");
3550                                 /* Get Loop Map information */
3551                 if (bf_get(lpfc_mbx_read_top_il, la))
3552                         fc_flags |= FC_LBIT;
3553
3554                 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la);
3555                 i = la->lilpBde64.tus.f.bdeSize;
3556
3557                 if (i == 0) {
3558                         phba->alpa_map[0] = 0;
3559                 } else {
3560                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
3561                                 int numalpa, j, k;
3562                                 union {
3563                                         uint8_t pamap[16];
3564                                         struct {
3565                                                 uint32_t wd1;
3566                                                 uint32_t wd2;
3567                                                 uint32_t wd3;
3568                                                 uint32_t wd4;
3569                                         } pa;
3570                                 } un;
3571                                 numalpa = phba->alpa_map[0];
3572                                 j = 0;
3573                                 while (j < numalpa) {
3574                                         memset(un.pamap, 0, 16);
3575                                         for (k = 1; j < numalpa; k++) {
3576                                                 un.pamap[k - 1] =
3577                                                         phba->alpa_map[j + 1];
3578                                                 j++;
3579                                                 if (k == 16)
3580                                                         break;
3581                                         }
3582                                         /* Link Up Event ALPA map */
3583                                         lpfc_printf_log(phba,
3584                                                         KERN_WARNING,
3585                                                         LOG_LINK_EVENT,
3586                                                         "1304 Link Up Event "
3587                                                         "ALPA map Data: x%x "
3588                                                         "x%x x%x x%x\n",
3589                                                         un.pa.wd1, un.pa.wd2,
3590                                                         un.pa.wd3, un.pa.wd4);
3591                                 }
3592                         }
3593                 }
3594         } else {
3595                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
3596                         if (phba->max_vpi && phba->cfg_enable_npiv &&
3597                            (phba->sli_rev >= LPFC_SLI_REV3))
3598                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
3599                 }
3600                 vport->fc_myDID = phba->fc_pref_DID;
3601                 fc_flags |= FC_LBIT;
3602         }
3603         spin_unlock_irqrestore(&phba->hbalock, iflags);
3604
3605         if (fc_flags) {
3606                 spin_lock_irqsave(shost->host_lock, iflags);
3607                 vport->fc_flag |= fc_flags;
3608                 spin_unlock_irqrestore(shost->host_lock, iflags);
3609         }
3610
3611         lpfc_linkup(phba);
3612         sparam_mbox = NULL;
3613
3614         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3615         if (!sparam_mbox)
3616                 goto out;
3617
3618         rc = lpfc_read_sparam(phba, sparam_mbox, 0);
3619         if (rc) {
3620                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3621                 goto out;
3622         }
3623         sparam_mbox->vport = vport;
3624         sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
3625         rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
3626         if (rc == MBX_NOT_FINISHED) {
3627                 lpfc_mbox_rsrc_cleanup(phba, sparam_mbox, MBOX_THD_UNLOCKED);
3628                 goto out;
3629         }
3630
3631         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3632                 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3633                 if (!cfglink_mbox)
3634                         goto out;
3635                 vport->port_state = LPFC_LOCAL_CFG_LINK;
3636                 lpfc_config_link(phba, cfglink_mbox);
3637                 cfglink_mbox->vport = vport;
3638                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
3639                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
3640                 if (rc == MBX_NOT_FINISHED) {
3641                         mempool_free(cfglink_mbox, phba->mbox_mem_pool);
3642                         goto out;
3643                 }
3644         } else {
3645                 vport->port_state = LPFC_VPORT_UNKNOWN;
3646                 /*
3647                  * Add the driver's default FCF record at FCF index 0 now. This
3648                  * is phase 1 implementation that support FCF index 0 and driver
3649                  * defaults.
3650                  */
3651                 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
3652                         fcf_record = kzalloc(sizeof(struct fcf_record),
3653                                         GFP_KERNEL);
3654                         if (unlikely(!fcf_record)) {
3655                                 lpfc_printf_log(phba, KERN_ERR,
3656                                         LOG_TRACE_EVENT,
3657                                         "2554 Could not allocate memory for "
3658                                         "fcf record\n");
3659                                 rc = -ENODEV;
3660                                 goto out;
3661                         }
3662
3663                         lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
3664                                                 LPFC_FCOE_FCF_DEF_INDEX);
3665                         rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
3666                         if (unlikely(rc)) {
3667                                 lpfc_printf_log(phba, KERN_ERR,
3668                                         LOG_TRACE_EVENT,
3669                                         "2013 Could not manually add FCF "
3670                                         "record 0, status %d\n", rc);
3671                                 rc = -ENODEV;
3672                                 kfree(fcf_record);
3673                                 goto out;
3674                         }
3675                         kfree(fcf_record);
3676                 }
3677                 /*
3678                  * The driver is expected to do FIP/FCF. Call the port
3679                  * and get the FCF Table.
3680                  */
3681                 spin_lock_irqsave(&phba->hbalock, iflags);
3682                 if (phba->hba_flag & FCF_TS_INPROG) {
3683                         spin_unlock_irqrestore(&phba->hbalock, iflags);
3684                         return;
3685                 }
3686                 /* This is the initial FCF discovery scan */
3687                 phba->fcf.fcf_flag |= FCF_INIT_DISC;
3688                 spin_unlock_irqrestore(&phba->hbalock, iflags);
3689                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3690                                 "2778 Start FCF table scan at linkup\n");
3691                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
3692                                                      LPFC_FCOE_FCF_GET_FIRST);
3693                 if (rc) {
3694                         spin_lock_irqsave(&phba->hbalock, iflags);
3695                         phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
3696                         spin_unlock_irqrestore(&phba->hbalock, iflags);
3697                         goto out;
3698                 }
3699                 /* Reset FCF roundrobin bmask for new discovery */
3700                 lpfc_sli4_clear_fcf_rr_bmask(phba);
3701         }
3702
3703         /* Prepare for LINK up registrations */
3704         memset(phba->os_host_name, 0, sizeof(phba->os_host_name));
3705         scnprintf(phba->os_host_name, sizeof(phba->os_host_name), "%s",
3706                   init_utsname()->nodename);
3707         return;
3708 out:
3709         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3710         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3711                          "0263 Discovery Mailbox error: state: 0x%x : x%px x%px\n",
3712                          vport->port_state, sparam_mbox, cfglink_mbox);
3713         lpfc_issue_clear_la(phba, vport);
3714         return;
3715 }
3716
3717 static void
3718 lpfc_enable_la(struct lpfc_hba *phba)
3719 {
3720         uint32_t control;
3721         struct lpfc_sli *psli = &phba->sli;
3722         spin_lock_irq(&phba->hbalock);
3723         psli->sli_flag |= LPFC_PROCESS_LA;
3724         if (phba->sli_rev <= LPFC_SLI_REV3) {
3725                 control = readl(phba->HCregaddr);
3726                 control |= HC_LAINT_ENA;
3727                 writel(control, phba->HCregaddr);
3728                 readl(phba->HCregaddr); /* flush */
3729         }
3730         spin_unlock_irq(&phba->hbalock);
3731 }
3732
3733 static void
3734 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
3735 {
3736         lpfc_linkdown(phba);
3737         lpfc_enable_la(phba);
3738         lpfc_unregister_unused_fcf(phba);
3739         /* turn on Link Attention interrupts - no CLEAR_LA needed */
3740 }
3741
3742
3743 /*
3744  * This routine handles processing a READ_TOPOLOGY mailbox
3745  * command upon completion. It is setup in the LPFC_MBOXQ
3746  * as the completion routine when the command is
3747  * handed off to the SLI layer. SLI4 only.
3748  */
3749 void
3750 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3751 {
3752         struct lpfc_vport *vport = pmb->vport;
3753         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3754         struct lpfc_mbx_read_top *la;
3755         struct lpfc_sli_ring *pring;
3756         MAILBOX_t *mb = &pmb->u.mb;
3757         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
3758         uint8_t attn_type;
3759         unsigned long iflags;
3760
3761         /* Unblock ELS traffic */
3762         pring = lpfc_phba_elsring(phba);
3763         if (pring)
3764                 pring->flag &= ~LPFC_STOP_IOCB_EVENT;
3765
3766         /* Check for error */
3767         if (mb->mbxStatus) {
3768                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3769                                 "1307 READ_LA mbox error x%x state x%x\n",
3770                                 mb->mbxStatus, vport->port_state);
3771                 lpfc_mbx_issue_link_down(phba);
3772                 phba->link_state = LPFC_HBA_ERROR;
3773                 goto lpfc_mbx_cmpl_read_topology_free_mbuf;
3774         }
3775
3776         la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
3777         attn_type = bf_get(lpfc_mbx_read_top_att_type, la);
3778
3779         memcpy(&phba->alpa_map[0], mp->virt, 128);
3780
3781         spin_lock_irqsave(shost->host_lock, iflags);
3782         if (bf_get(lpfc_mbx_read_top_pb, la))
3783                 vport->fc_flag |= FC_BYPASSED_MODE;
3784         else
3785                 vport->fc_flag &= ~FC_BYPASSED_MODE;
3786         spin_unlock_irqrestore(shost->host_lock, iflags);
3787
3788         if (phba->fc_eventTag <= la->eventTag) {
3789                 phba->fc_stat.LinkMultiEvent++;
3790                 if (attn_type == LPFC_ATT_LINK_UP)
3791                         if (phba->fc_eventTag != 0)
3792                                 lpfc_linkdown(phba);
3793         }
3794
3795         phba->fc_eventTag = la->eventTag;
3796         phba->link_events++;
3797         if (attn_type == LPFC_ATT_LINK_UP) {
3798                 phba->fc_stat.LinkUp++;
3799                 if (phba->link_flag & LS_LOOPBACK_MODE) {
3800                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3801                                         "1306 Link Up Event in loop back mode "
3802                                         "x%x received Data: x%x x%x x%x x%x\n",
3803                                         la->eventTag, phba->fc_eventTag,
3804                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3805                                                la),
3806                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3807                                         phba->alpa_map[0]);
3808                 } else {
3809                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3810                                         "1303 Link Up Event x%x received "
3811                                         "Data: x%x x%x x%x x%x x%x\n",
3812                                         la->eventTag, phba->fc_eventTag,
3813                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3814                                                la),
3815                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3816                                         phba->alpa_map[0],
3817                                         bf_get(lpfc_mbx_read_top_fa, la));
3818                 }
3819                 lpfc_mbx_process_link_up(phba, la);
3820
3821                 if (phba->cmf_active_mode != LPFC_CFG_OFF)
3822                         lpfc_cmf_signal_init(phba);
3823
3824                 if (phba->lmt & LMT_64Gb)
3825                         lpfc_read_lds_params(phba);
3826
3827         } else if (attn_type == LPFC_ATT_LINK_DOWN ||
3828                    attn_type == LPFC_ATT_UNEXP_WWPN) {
3829                 phba->fc_stat.LinkDown++;
3830                 if (phba->link_flag & LS_LOOPBACK_MODE)
3831                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3832                                 "1308 Link Down Event in loop back mode "
3833                                 "x%x received "
3834                                 "Data: x%x x%x x%x\n",
3835                                 la->eventTag, phba->fc_eventTag,
3836                                 phba->pport->port_state, vport->fc_flag);
3837                 else if (attn_type == LPFC_ATT_UNEXP_WWPN)
3838                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3839                                 "1313 Link Down Unexpected FA WWPN Event x%x "
3840                                 "received Data: x%x x%x x%x x%x\n",
3841                                 la->eventTag, phba->fc_eventTag,
3842                                 phba->pport->port_state, vport->fc_flag,
3843                                 bf_get(lpfc_mbx_read_top_fa, la));
3844                 else
3845                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3846                                 "1305 Link Down Event x%x received "
3847                                 "Data: x%x x%x x%x x%x\n",
3848                                 la->eventTag, phba->fc_eventTag,
3849                                 phba->pport->port_state, vport->fc_flag,
3850                                 bf_get(lpfc_mbx_read_top_fa, la));
3851                 lpfc_mbx_issue_link_down(phba);
3852         }
3853
3854         if ((phba->sli_rev < LPFC_SLI_REV4) &&
3855             bf_get(lpfc_mbx_read_top_fa, la))
3856                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3857                                 "1311 fa %d\n",
3858                                 bf_get(lpfc_mbx_read_top_fa, la));
3859
3860 lpfc_mbx_cmpl_read_topology_free_mbuf:
3861         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
3862 }
3863
3864 /*
3865  * This routine handles processing a REG_LOGIN mailbox
3866  * command upon completion. It is setup in the LPFC_MBOXQ
3867  * as the completion routine when the command is
3868  * handed off to the SLI layer.
3869  */
3870 void
3871 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3872 {
3873         struct lpfc_vport  *vport = pmb->vport;
3874         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3875         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
3876
3877         /* The driver calls the state machine with the pmb pointer
3878          * but wants to make sure a stale ctx_buf isn't acted on.
3879          * The ctx_buf is restored later and cleaned up.
3880          */
3881         pmb->ctx_buf = NULL;
3882         pmb->ctx_ndlp = NULL;
3883
3884         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI | LOG_NODE | LOG_DISCOVERY,
3885                          "0002 rpi:%x DID:%x flg:%x %d x%px\n",
3886                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
3887                          kref_read(&ndlp->kref),
3888                          ndlp);
3889         if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
3890                 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
3891
3892         if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL ||
3893             ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
3894                 /* We rcvd a rscn after issuing this
3895                  * mbox reg login, we may have cycled
3896                  * back through the state and be
3897                  * back at reg login state so this
3898                  * mbox needs to be ignored becase
3899                  * there is another reg login in
3900                  * process.
3901                  */
3902                 spin_lock_irq(&ndlp->lock);
3903                 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
3904                 spin_unlock_irq(&ndlp->lock);
3905
3906                 /*
3907                  * We cannot leave the RPI registered because
3908                  * if we go thru discovery again for this ndlp
3909                  * a subsequent REG_RPI will fail.
3910                  */
3911                 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3912                 lpfc_unreg_rpi(vport, ndlp);
3913         }
3914
3915         /* Call state machine */
3916         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
3917         pmb->ctx_buf = mp;
3918         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
3919
3920         /* decrement the node reference count held for this callback
3921          * function.
3922          */
3923         lpfc_nlp_put(ndlp);
3924
3925         return;
3926 }
3927
3928 static void
3929 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3930 {
3931         MAILBOX_t *mb = &pmb->u.mb;
3932         struct lpfc_vport *vport = pmb->vport;
3933         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3934
3935         switch (mb->mbxStatus) {
3936         case 0x0011:
3937         case 0x0020:
3938                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3939                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
3940                                  mb->mbxStatus);
3941                 break;
3942         /* If VPI is busy, reset the HBA */
3943         case 0x9700:
3944                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3945                         "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n",
3946                         vport->vpi, mb->mbxStatus);
3947                 if (!(phba->pport->load_flag & FC_UNLOADING))
3948                         lpfc_workq_post_event(phba, NULL, NULL,
3949                                 LPFC_EVT_RESET_HBA);
3950         }
3951         spin_lock_irq(shost->host_lock);
3952         vport->vpi_state &= ~LPFC_VPI_REGISTERED;
3953         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3954         spin_unlock_irq(shost->host_lock);
3955         mempool_free(pmb, phba->mbox_mem_pool);
3956         lpfc_cleanup_vports_rrqs(vport, NULL);
3957         /*
3958          * This shost reference might have been taken at the beginning of
3959          * lpfc_vport_delete()
3960          */
3961         if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
3962                 scsi_host_put(shost);
3963 }
3964
3965 int
3966 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
3967 {
3968         struct lpfc_hba  *phba = vport->phba;
3969         LPFC_MBOXQ_t *mbox;
3970         int rc;
3971
3972         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3973         if (!mbox)
3974                 return 1;
3975
3976         lpfc_unreg_vpi(phba, vport->vpi, mbox);
3977         mbox->vport = vport;
3978         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
3979         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3980         if (rc == MBX_NOT_FINISHED) {
3981                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3982                                  "1800 Could not issue unreg_vpi\n");
3983                 mempool_free(mbox, phba->mbox_mem_pool);
3984                 return rc;
3985         }
3986         return 0;
3987 }
3988
3989 static void
3990 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3991 {
3992         struct lpfc_vport *vport = pmb->vport;
3993         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3994         MAILBOX_t *mb = &pmb->u.mb;
3995
3996         switch (mb->mbxStatus) {
3997         case 0x0011:
3998         case 0x9601:
3999         case 0x9602:
4000                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4001                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
4002                                  mb->mbxStatus);
4003                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
4004                 spin_lock_irq(shost->host_lock);
4005                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
4006                 spin_unlock_irq(shost->host_lock);
4007                 vport->fc_myDID = 0;
4008
4009                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4010                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
4011                         if (phba->nvmet_support)
4012                                 lpfc_nvmet_update_targetport(phba);
4013                         else
4014                                 lpfc_nvme_update_localport(vport);
4015                 }
4016                 goto out;
4017         }
4018
4019         spin_lock_irq(shost->host_lock);
4020         vport->vpi_state |= LPFC_VPI_REGISTERED;
4021         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
4022         spin_unlock_irq(shost->host_lock);
4023         vport->num_disc_nodes = 0;
4024         /* go thru NPR list and issue ELS PLOGIs */
4025         if (vport->fc_npr_cnt)
4026                 lpfc_els_disc_plogi(vport);
4027
4028         if (!vport->num_disc_nodes) {
4029                 spin_lock_irq(shost->host_lock);
4030                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
4031                 spin_unlock_irq(shost->host_lock);
4032                 lpfc_can_disctmo(vport);
4033         }
4034         vport->port_state = LPFC_VPORT_READY;
4035
4036 out:
4037         mempool_free(pmb, phba->mbox_mem_pool);
4038         return;
4039 }
4040
4041 /**
4042  * lpfc_create_static_vport - Read HBA config region to create static vports.
4043  * @phba: pointer to lpfc hba data structure.
4044  *
4045  * This routine issue a DUMP mailbox command for config region 22 to get
4046  * the list of static vports to be created. The function create vports
4047  * based on the information returned from the HBA.
4048  **/
4049 void
4050 lpfc_create_static_vport(struct lpfc_hba *phba)
4051 {
4052         LPFC_MBOXQ_t *pmb = NULL;
4053         MAILBOX_t *mb;
4054         struct static_vport_info *vport_info;
4055         int mbx_wait_rc = 0, i;
4056         struct fc_vport_identifiers vport_id;
4057         struct fc_vport *new_fc_vport;
4058         struct Scsi_Host *shost;
4059         struct lpfc_vport *vport;
4060         uint16_t offset = 0;
4061         uint8_t *vport_buff;
4062         struct lpfc_dmabuf *mp;
4063         uint32_t byte_count = 0;
4064
4065         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4066         if (!pmb) {
4067                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4068                                 "0542 lpfc_create_static_vport failed to"
4069                                 " allocate mailbox memory\n");
4070                 return;
4071         }
4072         memset(pmb, 0, sizeof(LPFC_MBOXQ_t));
4073         mb = &pmb->u.mb;
4074
4075         vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
4076         if (!vport_info) {
4077                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4078                                 "0543 lpfc_create_static_vport failed to"
4079                                 " allocate vport_info\n");
4080                 mempool_free(pmb, phba->mbox_mem_pool);
4081                 return;
4082         }
4083
4084         vport_buff = (uint8_t *) vport_info;
4085         do {
4086                 /* While loop iteration forces a free dma buffer from
4087                  * the previous loop because the mbox is reused and
4088                  * the dump routine is a single-use construct.
4089                  */
4090                 if (pmb->ctx_buf) {
4091                         mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
4092                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
4093                         kfree(mp);
4094                         pmb->ctx_buf = NULL;
4095                 }
4096                 if (lpfc_dump_static_vport(phba, pmb, offset))
4097                         goto out;
4098
4099                 pmb->vport = phba->pport;
4100                 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb,
4101                                                         LPFC_MBOX_TMO);
4102
4103                 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) {
4104                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4105                                 "0544 lpfc_create_static_vport failed to"
4106                                 " issue dump mailbox command ret 0x%x "
4107                                 "status 0x%x\n",
4108                                 mbx_wait_rc, mb->mbxStatus);
4109                         goto out;
4110                 }
4111
4112                 if (phba->sli_rev == LPFC_SLI_REV4) {
4113                         byte_count = pmb->u.mqe.un.mb_words[5];
4114                         mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
4115                         if (byte_count > sizeof(struct static_vport_info) -
4116                                         offset)
4117                                 byte_count = sizeof(struct static_vport_info)
4118                                         - offset;
4119                         memcpy(vport_buff + offset, mp->virt, byte_count);
4120                         offset += byte_count;
4121                 } else {
4122                         if (mb->un.varDmp.word_cnt >
4123                                 sizeof(struct static_vport_info) - offset)
4124                                 mb->un.varDmp.word_cnt =
4125                                         sizeof(struct static_vport_info)
4126                                                 - offset;
4127                         byte_count = mb->un.varDmp.word_cnt;
4128                         lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
4129                                 vport_buff + offset,
4130                                 byte_count);
4131
4132                         offset += byte_count;
4133                 }
4134
4135         } while (byte_count &&
4136                 offset < sizeof(struct static_vport_info));
4137
4138
4139         if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
4140                 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
4141                         != VPORT_INFO_REV)) {
4142                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4143                                 "0545 lpfc_create_static_vport bad"
4144                                 " information header 0x%x 0x%x\n",
4145                                 le32_to_cpu(vport_info->signature),
4146                                 le32_to_cpu(vport_info->rev) &
4147                                 VPORT_INFO_REV_MASK);
4148
4149                 goto out;
4150         }
4151
4152         shost = lpfc_shost_from_vport(phba->pport);
4153
4154         for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
4155                 memset(&vport_id, 0, sizeof(vport_id));
4156                 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
4157                 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
4158                 if (!vport_id.port_name || !vport_id.node_name)
4159                         continue;
4160
4161                 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
4162                 vport_id.vport_type = FC_PORTTYPE_NPIV;
4163                 vport_id.disable = false;
4164                 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
4165
4166                 if (!new_fc_vport) {
4167                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4168                                 "0546 lpfc_create_static_vport failed to"
4169                                 " create vport\n");
4170                         continue;
4171                 }
4172
4173                 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
4174                 vport->vport_flag |= STATIC_VPORT;
4175         }
4176
4177 out:
4178         kfree(vport_info);
4179         if (mbx_wait_rc != MBX_TIMEOUT)
4180                 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4181 }
4182
4183 /*
4184  * This routine handles processing a Fabric REG_LOGIN mailbox
4185  * command upon completion. It is setup in the LPFC_MBOXQ
4186  * as the completion routine when the command is
4187  * handed off to the SLI layer.
4188  */
4189 void
4190 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4191 {
4192         struct lpfc_vport *vport = pmb->vport;
4193         MAILBOX_t *mb = &pmb->u.mb;
4194         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4195         struct Scsi_Host *shost;
4196
4197         pmb->ctx_ndlp = NULL;
4198
4199         if (mb->mbxStatus) {
4200                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4201                                  "0258 Register Fabric login error: 0x%x\n",
4202                                  mb->mbxStatus);
4203                 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4204                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4205                         /* FLOGI failed, use loop map to make discovery list */
4206                         lpfc_disc_list_loopmap(vport);
4207
4208                         /* Start discovery */
4209                         lpfc_disc_start(vport);
4210                         /* Decrement the reference count to ndlp after the
4211                          * reference to the ndlp are done.
4212                          */
4213                         lpfc_nlp_put(ndlp);
4214                         return;
4215                 }
4216
4217                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
4218                 /* Decrement the reference count to ndlp after the reference
4219                  * to the ndlp are done.
4220                  */
4221                 lpfc_nlp_put(ndlp);
4222                 return;
4223         }
4224
4225         if (phba->sli_rev < LPFC_SLI_REV4)
4226                 ndlp->nlp_rpi = mb->un.varWords[0];
4227         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4228         ndlp->nlp_type |= NLP_FABRIC;
4229         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4230
4231         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
4232                 /* when physical port receive logo donot start
4233                  * vport discovery */
4234                 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
4235                         lpfc_start_fdiscs(phba);
4236                 else {
4237                         shost = lpfc_shost_from_vport(vport);
4238                         spin_lock_irq(shost->host_lock);
4239                         vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ;
4240                         spin_unlock_irq(shost->host_lock);
4241                 }
4242                 lpfc_do_scr_ns_plogi(phba, vport);
4243         }
4244
4245         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4246
4247         /* Drop the reference count from the mbox at the end after
4248          * all the current reference to the ndlp have been done.
4249          */
4250         lpfc_nlp_put(ndlp);
4251         return;
4252 }
4253
4254  /*
4255   * This routine will issue a GID_FT for each FC4 Type supported
4256   * by the driver. ALL GID_FTs must complete before discovery is started.
4257   */
4258 int
4259 lpfc_issue_gidft(struct lpfc_vport *vport)
4260 {
4261         /* Good status, issue CT Request to NameServer */
4262         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4263             (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) {
4264                 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_FCP)) {
4265                         /* Cannot issue NameServer FCP Query, so finish up
4266                          * discovery
4267                          */
4268                         lpfc_printf_vlog(vport, KERN_ERR,
4269                                          LOG_TRACE_EVENT,
4270                                          "0604 %s FC TYPE %x %s\n",
4271                                          "Failed to issue GID_FT to ",
4272                                          FC_TYPE_FCP,
4273                                          "Finishing discovery.");
4274                         return 0;
4275                 }
4276                 vport->gidft_inp++;
4277         }
4278
4279         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4280             (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
4281                 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_NVME)) {
4282                         /* Cannot issue NameServer NVME Query, so finish up
4283                          * discovery
4284                          */
4285                         lpfc_printf_vlog(vport, KERN_ERR,
4286                                          LOG_TRACE_EVENT,
4287                                          "0605 %s FC_TYPE %x %s %d\n",
4288                                          "Failed to issue GID_FT to ",
4289                                          FC_TYPE_NVME,
4290                                          "Finishing discovery: gidftinp ",
4291                                          vport->gidft_inp);
4292                         if (vport->gidft_inp == 0)
4293                                 return 0;
4294                 } else
4295                         vport->gidft_inp++;
4296         }
4297         return vport->gidft_inp;
4298 }
4299
4300 /**
4301  * lpfc_issue_gidpt - issue a GID_PT for all N_Ports
4302  * @vport: The virtual port for which this call is being executed.
4303  *
4304  * This routine will issue a GID_PT to get a list of all N_Ports
4305  *
4306  * Return value :
4307  *   0 - Failure to issue a GID_PT
4308  *   1 - GID_PT issued
4309  **/
4310 int
4311 lpfc_issue_gidpt(struct lpfc_vport *vport)
4312 {
4313         /* Good status, issue CT Request to NameServer */
4314         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) {
4315                 /* Cannot issue NameServer FCP Query, so finish up
4316                  * discovery
4317                  */
4318                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4319                                  "0606 %s Port TYPE %x %s\n",
4320                                  "Failed to issue GID_PT to ",
4321                                  GID_PT_N_PORT,
4322                                  "Finishing discovery.");
4323                 return 0;
4324         }
4325         vport->gidft_inp++;
4326         return 1;
4327 }
4328
4329 /*
4330  * This routine handles processing a NameServer REG_LOGIN mailbox
4331  * command upon completion. It is setup in the LPFC_MBOXQ
4332  * as the completion routine when the command is
4333  * handed off to the SLI layer.
4334  */
4335 void
4336 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4337 {
4338         MAILBOX_t *mb = &pmb->u.mb;
4339         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4340         struct lpfc_vport *vport = pmb->vport;
4341         int rc;
4342
4343         pmb->ctx_ndlp = NULL;
4344         vport->gidft_inp = 0;
4345
4346         if (mb->mbxStatus) {
4347                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4348                                  "0260 Register NameServer error: 0x%x\n",
4349                                  mb->mbxStatus);
4350
4351 out:
4352                 /* decrement the node reference count held for this
4353                  * callback function.
4354                  */
4355                 lpfc_nlp_put(ndlp);
4356                 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4357
4358                 /* If the node is not registered with the scsi or nvme
4359                  * transport, remove the fabric node.  The failed reg_login
4360                  * is terminal and forces the removal of the last node
4361                  * reference.
4362                  */
4363                 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
4364                         spin_lock_irq(&ndlp->lock);
4365                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
4366                         spin_unlock_irq(&ndlp->lock);
4367                         lpfc_nlp_put(ndlp);
4368                 }
4369
4370                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4371                         /*
4372                          * RegLogin failed, use loop map to make discovery
4373                          * list
4374                          */
4375                         lpfc_disc_list_loopmap(vport);
4376
4377                         /* Start discovery */
4378                         lpfc_disc_start(vport);
4379                         return;
4380                 }
4381                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
4382                 return;
4383         }
4384
4385         if (phba->sli_rev < LPFC_SLI_REV4)
4386                 ndlp->nlp_rpi = mb->un.varWords[0];
4387         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4388         ndlp->nlp_type |= NLP_FABRIC;
4389         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4390         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
4391                          "0003 rpi:%x DID:%x flg:%x %d x%px\n",
4392                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
4393                          kref_read(&ndlp->kref),
4394                          ndlp);
4395
4396         if (vport->port_state < LPFC_VPORT_READY) {
4397                 /* Link up discovery requires Fabric registration. */
4398                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
4399                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
4400                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
4401                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
4402
4403                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4404                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP))
4405                         lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, FC_TYPE_FCP);
4406
4407                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4408                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME))
4409                         lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0,
4410                                     FC_TYPE_NVME);
4411
4412                 /* Issue SCR just before NameServer GID_FT Query */
4413                 lpfc_issue_els_scr(vport, 0);
4414
4415                 /* Link was bounced or a Fabric LOGO occurred.  Start EDC
4416                  * with initial FW values provided the congestion mode is
4417                  * not off.  Note that signals may or may not be supported
4418                  * by the adapter but FPIN is provided by default for 1
4419                  * or both missing signals support.
4420                  */
4421                 if (phba->cmf_active_mode != LPFC_CFG_OFF) {
4422                         phba->cgn_reg_fpin = phba->cgn_init_reg_fpin;
4423                         phba->cgn_reg_signal = phba->cgn_init_reg_signal;
4424                         rc = lpfc_issue_els_edc(vport, 0);
4425                         lpfc_printf_log(phba, KERN_INFO,
4426                                         LOG_INIT | LOG_ELS | LOG_DISCOVERY,
4427                                         "4220 Issue EDC status x%x Data x%x\n",
4428                                         rc, phba->cgn_init_reg_signal);
4429                 } else if (phba->lmt & LMT_64Gb) {
4430                         /* may send link fault capability descriptor */
4431                         lpfc_issue_els_edc(vport, 0);
4432                 } else {
4433                         lpfc_issue_els_rdf(vport, 0);
4434                 }
4435         }
4436
4437         vport->fc_ns_retry = 0;
4438         if (lpfc_issue_gidft(vport) == 0)
4439                 goto out;
4440
4441         /*
4442          * At this point in time we may need to wait for multiple
4443          * SLI_CTNS_GID_FT CT commands to complete before we start discovery.
4444          *
4445          * decrement the node reference count held for this
4446          * callback function.
4447          */
4448         lpfc_nlp_put(ndlp);
4449         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4450         return;
4451 }
4452
4453 /*
4454  * This routine handles processing a Fabric Controller REG_LOGIN mailbox
4455  * command upon completion. It is setup in the LPFC_MBOXQ
4456  * as the completion routine when the command is handed off to the SLI layer.
4457  */
4458 void
4459 lpfc_mbx_cmpl_fc_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4460 {
4461         struct lpfc_vport *vport = pmb->vport;
4462         MAILBOX_t *mb = &pmb->u.mb;
4463         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4464
4465         pmb->ctx_ndlp = NULL;
4466         if (mb->mbxStatus) {
4467                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4468                                  "0933 %s: Register FC login error: 0x%x\n",
4469                                  __func__, mb->mbxStatus);
4470                 goto out;
4471         }
4472
4473         lpfc_check_nlp_post_devloss(vport, ndlp);
4474
4475         if (phba->sli_rev < LPFC_SLI_REV4)
4476                 ndlp->nlp_rpi = mb->un.varWords[0];
4477
4478         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4479                          "0934 %s: Complete FC x%x RegLogin rpi x%x ste x%x\n",
4480                          __func__, ndlp->nlp_DID, ndlp->nlp_rpi,
4481                          ndlp->nlp_state);
4482
4483         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4484         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
4485         ndlp->nlp_type |= NLP_FABRIC;
4486         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4487
4488  out:
4489         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4490
4491         /* Drop the reference count from the mbox at the end after
4492          * all the current reference to the ndlp have been done.
4493          */
4494         lpfc_nlp_put(ndlp);
4495 }
4496
4497 static void
4498 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4499 {
4500         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4501         struct fc_rport  *rport;
4502         struct lpfc_rport_data *rdata;
4503         struct fc_rport_identifiers rport_ids;
4504         struct lpfc_hba  *phba = vport->phba;
4505         unsigned long flags;
4506
4507         if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4508                 return;
4509
4510         /* Remote port has reappeared. Re-register w/ FC transport */
4511         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
4512         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
4513         rport_ids.port_id = ndlp->nlp_DID;
4514         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
4515
4516
4517         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4518                               "rport add:       did:x%x flg:x%x type x%x",
4519                               ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4520
4521         /* Don't add the remote port if unloading. */
4522         if (vport->load_flag & FC_UNLOADING)
4523                 return;
4524
4525         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
4526         if (!rport) {
4527                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
4528                            "Warning: fc_remote_port_add failed\n");
4529                 return;
4530         }
4531
4532         /* Successful port add.  Complete initializing node data */
4533         rport->maxframe_size = ndlp->nlp_maxframe;
4534         rport->supported_classes = ndlp->nlp_class_sup;
4535         rdata = rport->dd_data;
4536         rdata->pnode = lpfc_nlp_get(ndlp);
4537         if (!rdata->pnode) {
4538                 dev_warn(&phba->pcidev->dev,
4539                          "Warning - node ref failed. Unreg rport\n");
4540                 fc_remote_port_delete(rport);
4541                 ndlp->rport = NULL;
4542                 return;
4543         }
4544
4545         spin_lock_irqsave(&ndlp->lock, flags);
4546         ndlp->fc4_xpt_flags |= SCSI_XPT_REGD;
4547         spin_unlock_irqrestore(&ndlp->lock, flags);
4548
4549         if (ndlp->nlp_type & NLP_FCP_TARGET)
4550                 rport_ids.roles |= FC_PORT_ROLE_FCP_TARGET;
4551         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
4552                 rport_ids.roles |= FC_PORT_ROLE_FCP_INITIATOR;
4553         if (ndlp->nlp_type & NLP_NVME_INITIATOR)
4554                 rport_ids.roles |= FC_PORT_ROLE_NVME_INITIATOR;
4555         if (ndlp->nlp_type & NLP_NVME_TARGET)
4556                 rport_ids.roles |= FC_PORT_ROLE_NVME_TARGET;
4557         if (ndlp->nlp_type & NLP_NVME_DISCOVERY)
4558                 rport_ids.roles |= FC_PORT_ROLE_NVME_DISCOVERY;
4559
4560         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
4561                 fc_remote_port_rolechg(rport, rport_ids.roles);
4562
4563         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
4564                          "3183 %s rport x%px DID x%x, role x%x refcnt %d\n",
4565                          __func__, rport, rport->port_id, rport->roles,
4566                          kref_read(&ndlp->kref));
4567
4568         if ((rport->scsi_target_id != -1) &&
4569             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
4570                 ndlp->nlp_sid = rport->scsi_target_id;
4571         }
4572
4573         return;
4574 }
4575
4576 static void
4577 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
4578 {
4579         struct fc_rport *rport = ndlp->rport;
4580         struct lpfc_vport *vport = ndlp->vport;
4581
4582         if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4583                 return;
4584
4585         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4586                 "rport delete:    did:x%x flg:x%x type x%x",
4587                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4588
4589         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4590                          "3184 rport unregister x%06x, rport x%px "
4591                          "xptflg x%x refcnt %d\n",
4592                          ndlp->nlp_DID, rport, ndlp->fc4_xpt_flags,
4593                          kref_read(&ndlp->kref));
4594
4595         fc_remote_port_delete(rport);
4596         lpfc_nlp_put(ndlp);
4597 }
4598
4599 static void
4600 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
4601 {
4602         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4603         unsigned long iflags;
4604
4605         spin_lock_irqsave(shost->host_lock, iflags);
4606         switch (state) {
4607         case NLP_STE_UNUSED_NODE:
4608                 vport->fc_unused_cnt += count;
4609                 break;
4610         case NLP_STE_PLOGI_ISSUE:
4611                 vport->fc_plogi_cnt += count;
4612                 break;
4613         case NLP_STE_ADISC_ISSUE:
4614                 vport->fc_adisc_cnt += count;
4615                 break;
4616         case NLP_STE_REG_LOGIN_ISSUE:
4617                 vport->fc_reglogin_cnt += count;
4618                 break;
4619         case NLP_STE_PRLI_ISSUE:
4620                 vport->fc_prli_cnt += count;
4621                 break;
4622         case NLP_STE_UNMAPPED_NODE:
4623                 vport->fc_unmap_cnt += count;
4624                 break;
4625         case NLP_STE_MAPPED_NODE:
4626                 vport->fc_map_cnt += count;
4627                 break;
4628         case NLP_STE_NPR_NODE:
4629                 if (vport->fc_npr_cnt == 0 && count == -1)
4630                         vport->fc_npr_cnt = 0;
4631                 else
4632                         vport->fc_npr_cnt += count;
4633                 break;
4634         }
4635         spin_unlock_irqrestore(shost->host_lock, iflags);
4636 }
4637
4638 /* Register a node with backend if not already done */
4639 void
4640 lpfc_nlp_reg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4641 {
4642         unsigned long iflags;
4643
4644         lpfc_check_nlp_post_devloss(vport, ndlp);
4645
4646         spin_lock_irqsave(&ndlp->lock, iflags);
4647         if (ndlp->fc4_xpt_flags & NLP_XPT_REGD) {
4648                 /* Already registered with backend, trigger rescan */
4649                 spin_unlock_irqrestore(&ndlp->lock, iflags);
4650
4651                 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD &&
4652                     ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY)) {
4653                         lpfc_nvme_rescan_port(vport, ndlp);
4654                 }
4655                 return;
4656         }
4657
4658         ndlp->fc4_xpt_flags |= NLP_XPT_REGD;
4659         spin_unlock_irqrestore(&ndlp->lock, iflags);
4660
4661         if (lpfc_valid_xpt_node(ndlp)) {
4662                 vport->phba->nport_event_cnt++;
4663                 /*
4664                  * Tell the fc transport about the port, if we haven't
4665                  * already. If we have, and it's a scsi entity, be
4666                  */
4667                 lpfc_register_remote_port(vport, ndlp);
4668         }
4669
4670         /* We are done if we do not have any NVME remote node */
4671         if (!(ndlp->nlp_fc4_type & NLP_FC4_NVME))
4672                 return;
4673
4674         /* Notify the NVME transport of this new rport. */
4675         if (vport->phba->sli_rev >= LPFC_SLI_REV4 &&
4676                         ndlp->nlp_fc4_type & NLP_FC4_NVME) {
4677                 if (vport->phba->nvmet_support == 0) {
4678                         /* Register this rport with the transport.
4679                          * Only NVME Target Rports are registered with
4680                          * the transport.
4681                          */
4682                         if (ndlp->nlp_type & NLP_NVME_TARGET) {
4683                                 vport->phba->nport_event_cnt++;
4684                                 lpfc_nvme_register_port(vport, ndlp);
4685                         }
4686                 } else {
4687                         /* Just take an NDLP ref count since the
4688                          * target does not register rports.
4689                          */
4690                         lpfc_nlp_get(ndlp);
4691                 }
4692         }
4693 }
4694
4695 /* Unregister a node with backend if not already done */
4696 void
4697 lpfc_nlp_unreg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4698 {
4699         unsigned long iflags;
4700
4701         spin_lock_irqsave(&ndlp->lock, iflags);
4702         if (!(ndlp->fc4_xpt_flags & NLP_XPT_REGD)) {
4703                 spin_unlock_irqrestore(&ndlp->lock, iflags);
4704                 lpfc_printf_vlog(vport, KERN_INFO,
4705                                  LOG_ELS | LOG_NODE | LOG_DISCOVERY,
4706                                  "0999 %s Not regd: ndlp x%px rport x%px DID "
4707                                  "x%x FLG x%x XPT x%x\n",
4708                                   __func__, ndlp, ndlp->rport, ndlp->nlp_DID,
4709                                   ndlp->nlp_flag, ndlp->fc4_xpt_flags);
4710                 return;
4711         }
4712
4713         ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD;
4714         spin_unlock_irqrestore(&ndlp->lock, iflags);
4715
4716         if (ndlp->rport &&
4717             ndlp->fc4_xpt_flags & SCSI_XPT_REGD) {
4718                 vport->phba->nport_event_cnt++;
4719                 lpfc_unregister_remote_port(ndlp);
4720         } else if (!ndlp->rport) {
4721                 lpfc_printf_vlog(vport, KERN_INFO,
4722                                  LOG_ELS | LOG_NODE | LOG_DISCOVERY,
4723                                  "1999 %s NDLP in devloss x%px DID x%x FLG x%x"
4724                                  " XPT x%x refcnt %u\n",
4725                                  __func__, ndlp, ndlp->nlp_DID, ndlp->nlp_flag,
4726                                  ndlp->fc4_xpt_flags,
4727                                  kref_read(&ndlp->kref));
4728         }
4729
4730         if (ndlp->fc4_xpt_flags & NVME_XPT_REGD) {
4731                 vport->phba->nport_event_cnt++;
4732                 if (vport->phba->nvmet_support == 0) {
4733                         /* Start devloss if target. */
4734                         if (ndlp->nlp_type & NLP_NVME_TARGET)
4735                                 lpfc_nvme_unregister_port(vport, ndlp);
4736                 } else {
4737                         /* NVMET has no upcall. */
4738                         lpfc_nlp_put(ndlp);
4739                 }
4740         }
4741
4742 }
4743
4744 /*
4745  * Adisc state change handling
4746  */
4747 static void
4748 lpfc_handle_adisc_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4749                 int new_state)
4750 {
4751         switch (new_state) {
4752         /*
4753          * Any state to ADISC_ISSUE
4754          * Do nothing, adisc cmpl handling will trigger state changes
4755          */
4756         case NLP_STE_ADISC_ISSUE:
4757                 break;
4758
4759         /*
4760          * ADISC_ISSUE to mapped states
4761          * Trigger a registration with backend, it will be nop if
4762          * already registered
4763          */
4764         case NLP_STE_UNMAPPED_NODE:
4765                 ndlp->nlp_type |= NLP_FC_NODE;
4766                 fallthrough;
4767         case NLP_STE_MAPPED_NODE:
4768                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4769                 lpfc_nlp_reg_node(vport, ndlp);
4770                 break;
4771
4772         /*
4773          * ADISC_ISSUE to non-mapped states
4774          * We are moving from ADISC_ISSUE to a non-mapped state because
4775          * ADISC failed, we would have skipped unregistering with
4776          * backend, attempt it now
4777          */
4778         case NLP_STE_NPR_NODE:
4779                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
4780                 fallthrough;
4781         default:
4782                 lpfc_nlp_unreg_node(vport, ndlp);
4783                 break;
4784         }
4785
4786 }
4787
4788 static void
4789 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4790                        int old_state, int new_state)
4791 {
4792         /* Trap ADISC changes here */
4793         if (new_state == NLP_STE_ADISC_ISSUE ||
4794             old_state == NLP_STE_ADISC_ISSUE) {
4795                 lpfc_handle_adisc_state(vport, ndlp, new_state);
4796                 return;
4797         }
4798
4799         if (new_state == NLP_STE_UNMAPPED_NODE) {
4800                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4801                 ndlp->nlp_type |= NLP_FC_NODE;
4802         }
4803         if (new_state == NLP_STE_MAPPED_NODE)
4804                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4805         if (new_state == NLP_STE_NPR_NODE)
4806                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
4807
4808         /* Reg/Unreg for FCP and NVME Transport interface */
4809         if ((old_state == NLP_STE_MAPPED_NODE ||
4810              old_state == NLP_STE_UNMAPPED_NODE)) {
4811                 /* For nodes marked for ADISC, Handle unreg in ADISC cmpl
4812                  * if linkup. In linkdown do unreg_node
4813                  */
4814                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC) ||
4815                     !lpfc_is_link_up(vport->phba))
4816                         lpfc_nlp_unreg_node(vport, ndlp);
4817         }
4818
4819         if (new_state ==  NLP_STE_MAPPED_NODE ||
4820             new_state == NLP_STE_UNMAPPED_NODE)
4821                 lpfc_nlp_reg_node(vport, ndlp);
4822
4823         /*
4824          * If the node just added to Mapped list was an FCP target,
4825          * but the remote port registration failed or assigned a target
4826          * id outside the presentable range - move the node to the
4827          * Unmapped List.
4828          */
4829         if ((new_state == NLP_STE_MAPPED_NODE) &&
4830             (ndlp->nlp_type & NLP_FCP_TARGET) &&
4831             (!ndlp->rport ||
4832              ndlp->rport->scsi_target_id == -1 ||
4833              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
4834                 spin_lock_irq(&ndlp->lock);
4835                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
4836                 spin_unlock_irq(&ndlp->lock);
4837                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4838         }
4839 }
4840
4841 static char *
4842 lpfc_nlp_state_name(char *buffer, size_t size, int state)
4843 {
4844         static char *states[] = {
4845                 [NLP_STE_UNUSED_NODE] = "UNUSED",
4846                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
4847                 [NLP_STE_ADISC_ISSUE] = "ADISC",
4848                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
4849                 [NLP_STE_PRLI_ISSUE] = "PRLI",
4850                 [NLP_STE_LOGO_ISSUE] = "LOGO",
4851                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
4852                 [NLP_STE_MAPPED_NODE] = "MAPPED",
4853                 [NLP_STE_NPR_NODE] = "NPR",
4854         };
4855
4856         if (state < NLP_STE_MAX_STATE && states[state])
4857                 strscpy(buffer, states[state], size);
4858         else
4859                 snprintf(buffer, size, "unknown (%d)", state);
4860         return buffer;
4861 }
4862
4863 void
4864 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4865                    int state)
4866 {
4867         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4868         int  old_state = ndlp->nlp_state;
4869         int node_dropped = ndlp->nlp_flag & NLP_DROPPED;
4870         char name1[16], name2[16];
4871
4872         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4873                          "0904 NPort state transition x%06x, %s -> %s\n",
4874                          ndlp->nlp_DID,
4875                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
4876                          lpfc_nlp_state_name(name2, sizeof(name2), state));
4877
4878         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4879                 "node statechg    did:x%x old:%d ste:%d",
4880                 ndlp->nlp_DID, old_state, state);
4881
4882         if (node_dropped && old_state == NLP_STE_UNUSED_NODE &&
4883             state != NLP_STE_UNUSED_NODE) {
4884                 ndlp->nlp_flag &= ~NLP_DROPPED;
4885                 lpfc_nlp_get(ndlp);
4886         }
4887
4888         if (old_state == NLP_STE_NPR_NODE &&
4889             state != NLP_STE_NPR_NODE)
4890                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4891         if (old_state == NLP_STE_UNMAPPED_NODE) {
4892                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
4893                 ndlp->nlp_type &= ~NLP_FC_NODE;
4894         }
4895
4896         if (list_empty(&ndlp->nlp_listp)) {
4897                 spin_lock_irq(shost->host_lock);
4898                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4899                 spin_unlock_irq(shost->host_lock);
4900         } else if (old_state)
4901                 lpfc_nlp_counters(vport, old_state, -1);
4902
4903         ndlp->nlp_state = state;
4904         lpfc_nlp_counters(vport, state, 1);
4905         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
4906 }
4907
4908 void
4909 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4910 {
4911         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4912
4913         if (list_empty(&ndlp->nlp_listp)) {
4914                 spin_lock_irq(shost->host_lock);
4915                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4916                 spin_unlock_irq(shost->host_lock);
4917         }
4918 }
4919
4920 void
4921 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4922 {
4923         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4924
4925         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4926         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4927                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4928         spin_lock_irq(shost->host_lock);
4929         list_del_init(&ndlp->nlp_listp);
4930         spin_unlock_irq(shost->host_lock);
4931         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4932                                 NLP_STE_UNUSED_NODE);
4933 }
4934
4935 /**
4936  * lpfc_initialize_node - Initialize all fields of node object
4937  * @vport: Pointer to Virtual Port object.
4938  * @ndlp: Pointer to FC node object.
4939  * @did: FC_ID of the node.
4940  *
4941  * This function is always called when node object need to be initialized.
4942  * It initializes all the fields of the node object. Although the reference
4943  * to phba from @ndlp can be obtained indirectly through it's reference to
4944  * @vport, a direct reference to phba is taken here by @ndlp. This is due
4945  * to the life-span of the @ndlp might go beyond the existence of @vport as
4946  * the final release of ndlp is determined by its reference count. And, the
4947  * operation on @ndlp needs the reference to phba.
4948  **/
4949 static inline void
4950 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4951         uint32_t did)
4952 {
4953         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
4954         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
4955         timer_setup(&ndlp->nlp_delayfunc, lpfc_els_retry_delay, 0);
4956         INIT_LIST_HEAD(&ndlp->recovery_evt.evt_listp);
4957
4958         ndlp->nlp_DID = did;
4959         ndlp->vport = vport;
4960         ndlp->phba = vport->phba;
4961         ndlp->nlp_sid = NLP_NO_SID;
4962         ndlp->nlp_fc4_type = NLP_FC4_NONE;
4963         kref_init(&ndlp->kref);
4964         atomic_set(&ndlp->cmd_pending, 0);
4965         ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
4966         ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
4967 }
4968
4969 void
4970 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4971 {
4972         /*
4973          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
4974          * be used when lpfc wants to remove the "last" lpfc_nlp_put() to
4975          * release the ndlp from the vport when conditions are correct.
4976          */
4977         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
4978                 return;
4979         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
4980         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4981                 lpfc_cleanup_vports_rrqs(vport, ndlp);
4982                 lpfc_unreg_rpi(vport, ndlp);
4983         }
4984
4985         /* NLP_DROPPED means another thread already removed the initial
4986          * reference from lpfc_nlp_init.  If set, don't drop it again and
4987          * introduce an imbalance.
4988          */
4989         spin_lock_irq(&ndlp->lock);
4990         if (!(ndlp->nlp_flag & NLP_DROPPED)) {
4991                 ndlp->nlp_flag |= NLP_DROPPED;
4992                 spin_unlock_irq(&ndlp->lock);
4993                 lpfc_nlp_put(ndlp);
4994                 return;
4995         }
4996         spin_unlock_irq(&ndlp->lock);
4997 }
4998
4999 /*
5000  * Start / ReStart rescue timer for Discovery / RSCN handling
5001  */
5002 void
5003 lpfc_set_disctmo(struct lpfc_vport *vport)
5004 {
5005         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5006         struct lpfc_hba  *phba = vport->phba;
5007         uint32_t tmo;
5008
5009         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
5010                 /* For FAN, timeout should be greater than edtov */
5011                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
5012         } else {
5013                 /* Normal discovery timeout should be > than ELS/CT timeout
5014                  * FC spec states we need 3 * ratov for CT requests
5015                  */
5016                 tmo = ((phba->fc_ratov * 3) + 3);
5017         }
5018
5019
5020         if (!timer_pending(&vport->fc_disctmo)) {
5021                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
5022                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
5023                         tmo, vport->port_state, vport->fc_flag);
5024         }
5025
5026         mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo));
5027         spin_lock_irq(shost->host_lock);
5028         vport->fc_flag |= FC_DISC_TMO;
5029         spin_unlock_irq(shost->host_lock);
5030
5031         /* Start Discovery Timer state <hba_state> */
5032         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5033                          "0247 Start Discovery Timer state x%x "
5034                          "Data: x%x x%lx x%x x%x\n",
5035                          vport->port_state, tmo,
5036                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
5037                          vport->fc_adisc_cnt);
5038
5039         return;
5040 }
5041
5042 /*
5043  * Cancel rescue timer for Discovery / RSCN handling
5044  */
5045 int
5046 lpfc_can_disctmo(struct lpfc_vport *vport)
5047 {
5048         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5049         unsigned long iflags;
5050
5051         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
5052                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
5053                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
5054
5055         /* Turn off discovery timer if its running */
5056         if (vport->fc_flag & FC_DISC_TMO ||
5057             timer_pending(&vport->fc_disctmo)) {
5058                 spin_lock_irqsave(shost->host_lock, iflags);
5059                 vport->fc_flag &= ~FC_DISC_TMO;
5060                 spin_unlock_irqrestore(shost->host_lock, iflags);
5061                 del_timer_sync(&vport->fc_disctmo);
5062                 spin_lock_irqsave(&vport->work_port_lock, iflags);
5063                 vport->work_port_events &= ~WORKER_DISC_TMO;
5064                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
5065         }
5066
5067         /* Cancel Discovery Timer state <hba_state> */
5068         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5069                          "0248 Cancel Discovery Timer state x%x "
5070                          "Data: x%x x%x x%x\n",
5071                          vport->port_state, vport->fc_flag,
5072                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
5073         return 0;
5074 }
5075
5076 /*
5077  * Check specified ring for outstanding IOCB on the SLI queue
5078  * Return true if iocb matches the specified nport
5079  */
5080 int
5081 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
5082                     struct lpfc_sli_ring *pring,
5083                     struct lpfc_iocbq *iocb,
5084                     struct lpfc_nodelist *ndlp)
5085 {
5086         struct lpfc_vport *vport = ndlp->vport;
5087         u8 ulp_command;
5088         u16 ulp_context;
5089         u32 remote_id;
5090
5091         if (iocb->vport != vport)
5092                 return 0;
5093
5094         ulp_command = get_job_cmnd(phba, iocb);
5095         ulp_context = get_job_ulpcontext(phba, iocb);
5096         remote_id = get_job_els_rsp64_did(phba, iocb);
5097
5098         if (pring->ringno == LPFC_ELS_RING) {
5099                 switch (ulp_command) {
5100                 case CMD_GEN_REQUEST64_CR:
5101                         if (iocb->ndlp == ndlp)
5102                                 return 1;
5103                         fallthrough;
5104                 case CMD_ELS_REQUEST64_CR:
5105                         if (remote_id == ndlp->nlp_DID)
5106                                 return 1;
5107                         fallthrough;
5108                 case CMD_XMIT_ELS_RSP64_CX:
5109                         if (iocb->ndlp == ndlp)
5110                                 return 1;
5111                 }
5112         } else if (pring->ringno == LPFC_FCP_RING) {
5113                 /* Skip match check if waiting to relogin to FCP target */
5114                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
5115                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
5116                         return 0;
5117                 }
5118                 if (ulp_context == ndlp->nlp_rpi)
5119                         return 1;
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
5220         /* Check to see if there are any deferred events to process */
5221         if ((ndlp->nlp_flag & NLP_UNREG_INP) &&
5222             (ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING)) {
5223                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5224                                  "1434 UNREG cmpl deferred logo x%x "
5225                                  "on NPort x%x Data: x%x x%px\n",
5226                                  ndlp->nlp_rpi, ndlp->nlp_DID,
5227                                  ndlp->nlp_defer_did, ndlp);
5228
5229                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5230                 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
5231                 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
5232         } else {
5233                 /* NLP_RELEASE_RPI is only set for SLI4 ports. */
5234                 if (ndlp->nlp_flag & NLP_RELEASE_RPI) {
5235                         lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi);
5236                         spin_lock_irq(&ndlp->lock);
5237                         ndlp->nlp_flag &= ~NLP_RELEASE_RPI;
5238                         ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
5239                         spin_unlock_irq(&ndlp->lock);
5240                 }
5241                 spin_lock_irq(&ndlp->lock);
5242                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5243                 spin_unlock_irq(&ndlp->lock);
5244         }
5245
5246         /* The node has an outstanding reference for the unreg. Now
5247          * that the LOGO action and cleanup are finished, release
5248          * resources.
5249          */
5250         lpfc_nlp_put(ndlp);
5251         mempool_free(pmb, phba->mbox_mem_pool);
5252 }
5253
5254 /*
5255  * Sets the mailbox completion handler to be used for the
5256  * unreg_rpi command. The handler varies based on the state of
5257  * the port and what will be happening to the rpi next.
5258  */
5259 static void
5260 lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba *phba, struct lpfc_vport *vport,
5261         struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox)
5262 {
5263         unsigned long iflags;
5264
5265         /* Driver always gets a reference on the mailbox job
5266          * in support of async jobs.
5267          */
5268         mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
5269         if (!mbox->ctx_ndlp)
5270                 return;
5271
5272         if (ndlp->nlp_flag & NLP_ISSUE_LOGO) {
5273                 mbox->mbox_cmpl = lpfc_nlp_logo_unreg;
5274
5275         } else if (phba->sli_rev == LPFC_SLI_REV4 &&
5276                    (!(vport->load_flag & FC_UNLOADING)) &&
5277                     (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
5278                                       LPFC_SLI_INTF_IF_TYPE_2) &&
5279                     (kref_read(&ndlp->kref) > 0)) {
5280                 mbox->mbox_cmpl = lpfc_sli4_unreg_rpi_cmpl_clr;
5281         } else {
5282                 if (vport->load_flag & FC_UNLOADING) {
5283                         if (phba->sli_rev == LPFC_SLI_REV4) {
5284                                 spin_lock_irqsave(&ndlp->lock, iflags);
5285                                 ndlp->nlp_flag |= NLP_RELEASE_RPI;
5286                                 spin_unlock_irqrestore(&ndlp->lock, iflags);
5287                         }
5288                 }
5289                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5290         }
5291 }
5292
5293 /*
5294  * Free rpi associated with LPFC_NODELIST entry.
5295  * This routine is called from lpfc_freenode(), when we are removing
5296  * a LPFC_NODELIST entry. It is also called if the driver initiates a
5297  * LOGO that completes successfully, and we are waiting to PLOGI back
5298  * to the remote NPort. In addition, it is called after we receive
5299  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
5300  * we are waiting to PLOGI back to the remote NPort.
5301  */
5302 int
5303 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5304 {
5305         struct lpfc_hba *phba = vport->phba;
5306         LPFC_MBOXQ_t    *mbox;
5307         int rc, acc_plogi = 1;
5308         uint16_t rpi;
5309
5310         if (ndlp->nlp_flag & NLP_RPI_REGISTERED ||
5311             ndlp->nlp_flag & NLP_REG_LOGIN_SEND) {
5312                 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
5313                         lpfc_printf_vlog(vport, KERN_INFO,
5314                                          LOG_NODE | LOG_DISCOVERY,
5315                                          "3366 RPI x%x needs to be "
5316                                          "unregistered nlp_flag x%x "
5317                                          "did x%x\n",
5318                                          ndlp->nlp_rpi, ndlp->nlp_flag,
5319                                          ndlp->nlp_DID);
5320
5321                 /* If there is already an UNREG in progress for this ndlp,
5322                  * no need to queue up another one.
5323                  */
5324                 if (ndlp->nlp_flag & NLP_UNREG_INP) {
5325                         lpfc_printf_vlog(vport, KERN_INFO,
5326                                          LOG_NODE | LOG_DISCOVERY,
5327                                          "1436 unreg_rpi SKIP UNREG x%x on "
5328                                          "NPort x%x deferred x%x  flg x%x "
5329                                          "Data: x%px\n",
5330                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5331                                          ndlp->nlp_defer_did,
5332                                          ndlp->nlp_flag, ndlp);
5333                         goto out;
5334                 }
5335
5336                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5337                 if (mbox) {
5338                         /* SLI4 ports require the physical rpi value. */
5339                         rpi = ndlp->nlp_rpi;
5340                         if (phba->sli_rev == LPFC_SLI_REV4)
5341                                 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
5342
5343                         lpfc_unreg_login(phba, vport->vpi, rpi, mbox);
5344                         mbox->vport = vport;
5345                         lpfc_set_unreg_login_mbx_cmpl(phba, vport, ndlp, mbox);
5346                         if (!mbox->ctx_ndlp) {
5347                                 mempool_free(mbox, phba->mbox_mem_pool);
5348                                 return 1;
5349                         }
5350
5351                         if (mbox->mbox_cmpl == lpfc_sli4_unreg_rpi_cmpl_clr)
5352                                 /*
5353                                  * accept PLOGIs after unreg_rpi_cmpl
5354                                  */
5355                                 acc_plogi = 0;
5356                         if (((ndlp->nlp_DID & Fabric_DID_MASK) !=
5357                             Fabric_DID_MASK) &&
5358                             (!(vport->fc_flag & FC_OFFLINE_MODE)))
5359                                 ndlp->nlp_flag |= NLP_UNREG_INP;
5360
5361                         lpfc_printf_vlog(vport, KERN_INFO,
5362                                          LOG_NODE | LOG_DISCOVERY,
5363                                          "1433 unreg_rpi UNREG x%x on "
5364                                          "NPort x%x deferred flg x%x "
5365                                          "Data:x%px\n",
5366                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5367                                          ndlp->nlp_flag, ndlp);
5368
5369                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5370                         if (rc == MBX_NOT_FINISHED) {
5371                                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5372                                 mempool_free(mbox, phba->mbox_mem_pool);
5373                                 acc_plogi = 1;
5374                                 lpfc_nlp_put(ndlp);
5375                         }
5376                 } else {
5377                         lpfc_printf_vlog(vport, KERN_INFO,
5378                                          LOG_NODE | LOG_DISCOVERY,
5379                                          "1444 Failed to allocate mempool "
5380                                          "unreg_rpi UNREG x%x, "
5381                                          "DID x%x, flag x%x, "
5382                                          "ndlp x%px\n",
5383                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5384                                          ndlp->nlp_flag, ndlp);
5385
5386                         /* Because mempool_alloc failed, we
5387                          * will issue a LOGO here and keep the rpi alive if
5388                          * not unloading.
5389                          */
5390                         if (!(vport->load_flag & FC_UNLOADING)) {
5391                                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5392                                 lpfc_issue_els_logo(vport, ndlp, 0);
5393                                 ndlp->nlp_prev_state = ndlp->nlp_state;
5394                                 lpfc_nlp_set_state(vport, ndlp,
5395                                                    NLP_STE_NPR_NODE);
5396                         }
5397
5398                         return 1;
5399                 }
5400                 lpfc_no_rpi(phba, ndlp);
5401 out:
5402                 if (phba->sli_rev != LPFC_SLI_REV4)
5403                         ndlp->nlp_rpi = 0;
5404                 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
5405                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
5406                 if (acc_plogi)
5407                         ndlp->nlp_flag &= ~NLP_LOGO_ACC;
5408                 return 1;
5409         }
5410         ndlp->nlp_flag &= ~NLP_LOGO_ACC;
5411         return 0;
5412 }
5413
5414 /**
5415  * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
5416  * @phba: pointer to lpfc hba data structure.
5417  *
5418  * This routine is invoked to unregister all the currently registered RPIs
5419  * to the HBA.
5420  **/
5421 void
5422 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
5423 {
5424         struct lpfc_vport **vports;
5425         struct lpfc_nodelist *ndlp;
5426         struct Scsi_Host *shost;
5427         int i;
5428
5429         vports = lpfc_create_vport_work_array(phba);
5430         if (!vports) {
5431                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5432                                 "2884 Vport array allocation failed \n");
5433                 return;
5434         }
5435         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5436                 shost = lpfc_shost_from_vport(vports[i]);
5437                 spin_lock_irq(shost->host_lock);
5438                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
5439                         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
5440                                 /* The mempool_alloc might sleep */
5441                                 spin_unlock_irq(shost->host_lock);
5442                                 lpfc_unreg_rpi(vports[i], ndlp);
5443                                 spin_lock_irq(shost->host_lock);
5444                         }
5445                 }
5446                 spin_unlock_irq(shost->host_lock);
5447         }
5448         lpfc_destroy_vport_work_array(phba, vports);
5449 }
5450
5451 void
5452 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
5453 {
5454         struct lpfc_hba  *phba  = vport->phba;
5455         LPFC_MBOXQ_t     *mbox;
5456         int rc;
5457
5458         if (phba->sli_rev == LPFC_SLI_REV4) {
5459                 lpfc_sli4_unreg_all_rpis(vport);
5460                 return;
5461         }
5462
5463         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5464         if (mbox) {
5465                 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT,
5466                                  mbox);
5467                 mbox->vport = vport;
5468                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5469                 mbox->ctx_ndlp = NULL;
5470                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5471                 if (rc != MBX_TIMEOUT)
5472                         mempool_free(mbox, phba->mbox_mem_pool);
5473
5474                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5475                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5476                                          "1836 Could not issue "
5477                                          "unreg_login(all_rpis) status %d\n",
5478                                          rc);
5479         }
5480 }
5481
5482 void
5483 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
5484 {
5485         struct lpfc_hba  *phba  = vport->phba;
5486         LPFC_MBOXQ_t     *mbox;
5487         int rc;
5488
5489         /* Unreg DID is an SLI3 operation. */
5490         if (phba->sli_rev > LPFC_SLI_REV3)
5491                 return;
5492
5493         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5494         if (mbox) {
5495                 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS,
5496                                mbox);
5497                 mbox->vport = vport;
5498                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5499                 mbox->ctx_ndlp = NULL;
5500                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5501                 if (rc != MBX_TIMEOUT)
5502                         mempool_free(mbox, phba->mbox_mem_pool);
5503
5504                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5505                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5506                                          "1815 Could not issue "
5507                                          "unreg_did (default rpis) status %d\n",
5508                                          rc);
5509         }
5510 }
5511
5512 /*
5513  * Free resources associated with LPFC_NODELIST entry
5514  * so it can be freed.
5515  */
5516 static int
5517 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5518 {
5519         struct lpfc_hba  *phba = vport->phba;
5520         LPFC_MBOXQ_t *mb, *nextmb;
5521
5522         /* Cleanup node for NPort <nlp_DID> */
5523         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5524                          "0900 Cleanup node for NPort x%x "
5525                          "Data: x%x x%x x%x\n",
5526                          ndlp->nlp_DID, ndlp->nlp_flag,
5527                          ndlp->nlp_state, ndlp->nlp_rpi);
5528         lpfc_dequeue_node(vport, ndlp);
5529
5530         /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */
5531
5532         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
5533         if ((mb = phba->sli.mbox_active)) {
5534                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5535                    !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5536                    (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
5537                         mb->ctx_ndlp = NULL;
5538                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5539                 }
5540         }
5541
5542         spin_lock_irq(&phba->hbalock);
5543         /* Cleanup REG_LOGIN completions which are not yet processed */
5544         list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
5545                 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) ||
5546                         (mb->mbox_flag & LPFC_MBX_IMED_UNREG) ||
5547                         (ndlp != (struct lpfc_nodelist *)mb->ctx_ndlp))
5548                         continue;
5549
5550                 mb->ctx_ndlp = NULL;
5551                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5552         }
5553
5554         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
5555                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5556                    !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5557                     (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
5558                         list_del(&mb->list);
5559                         lpfc_mbox_rsrc_cleanup(phba, mb, MBOX_THD_LOCKED);
5560
5561                         /* Don't invoke lpfc_nlp_put. The driver is in
5562                          * lpfc_nlp_release context.
5563                          */
5564                 }
5565         }
5566         spin_unlock_irq(&phba->hbalock);
5567
5568         lpfc_els_abort(phba, ndlp);
5569
5570         spin_lock_irq(&ndlp->lock);
5571         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
5572         spin_unlock_irq(&ndlp->lock);
5573
5574         ndlp->nlp_last_elscmd = 0;
5575         del_timer_sync(&ndlp->nlp_delayfunc);
5576
5577         list_del_init(&ndlp->els_retry_evt.evt_listp);
5578         list_del_init(&ndlp->dev_loss_evt.evt_listp);
5579         list_del_init(&ndlp->recovery_evt.evt_listp);
5580         lpfc_cleanup_vports_rrqs(vport, ndlp);
5581
5582         if (phba->sli_rev == LPFC_SLI_REV4)
5583                 ndlp->nlp_flag |= NLP_RELEASE_RPI;
5584
5585         return 0;
5586 }
5587
5588 static int
5589 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
5590               uint32_t did)
5591 {
5592         D_ID mydid, ndlpdid, matchdid;
5593
5594         if (did == Bcast_DID)
5595                 return 0;
5596
5597         /* First check for Direct match */
5598         if (ndlp->nlp_DID == did)
5599                 return 1;
5600
5601         /* Next check for area/domain identically equals 0 match */
5602         mydid.un.word = vport->fc_myDID;
5603         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
5604                 return 0;
5605         }
5606
5607         matchdid.un.word = did;
5608         ndlpdid.un.word = ndlp->nlp_DID;
5609         if (matchdid.un.b.id == ndlpdid.un.b.id) {
5610                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
5611                     (mydid.un.b.area == matchdid.un.b.area)) {
5612                         /* This code is supposed to match the ID
5613                          * for a private loop device that is
5614                          * connect to fl_port. But we need to
5615                          * check that the port did not just go
5616                          * from pt2pt to fabric or we could end
5617                          * up matching ndlp->nlp_DID 000001 to
5618                          * fabric DID 0x20101
5619                          */
5620                         if ((ndlpdid.un.b.domain == 0) &&
5621                             (ndlpdid.un.b.area == 0)) {
5622                                 if (ndlpdid.un.b.id &&
5623                                     vport->phba->fc_topology ==
5624                                     LPFC_TOPOLOGY_LOOP)
5625                                         return 1;
5626                         }
5627                         return 0;
5628                 }
5629
5630                 matchdid.un.word = ndlp->nlp_DID;
5631                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
5632                     (mydid.un.b.area == ndlpdid.un.b.area)) {
5633                         if ((matchdid.un.b.domain == 0) &&
5634                             (matchdid.un.b.area == 0)) {
5635                                 if (matchdid.un.b.id)
5636                                         return 1;
5637                         }
5638                 }
5639         }
5640         return 0;
5641 }
5642
5643 /* Search for a nodelist entry */
5644 static struct lpfc_nodelist *
5645 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5646 {
5647         struct lpfc_nodelist *ndlp;
5648         uint32_t data1;
5649
5650         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5651                 if (lpfc_matchdid(vport, ndlp, did)) {
5652                         data1 = (((uint32_t)ndlp->nlp_state << 24) |
5653                                  ((uint32_t)ndlp->nlp_xri << 16) |
5654                                  ((uint32_t)ndlp->nlp_type << 8)
5655                                  );
5656                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5657                                          "0929 FIND node DID "
5658                                          "Data: x%px x%x x%x x%x x%x x%px\n",
5659                                          ndlp, ndlp->nlp_DID,
5660                                          ndlp->nlp_flag, data1, ndlp->nlp_rpi,
5661                                          ndlp->active_rrqs_xri_bitmap);
5662                         return ndlp;
5663                 }
5664         }
5665
5666         /* FIND node did <did> NOT FOUND */
5667         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5668                          "0932 FIND node did x%x NOT FOUND.\n", did);
5669         return NULL;
5670 }
5671
5672 struct lpfc_nodelist *
5673 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5674 {
5675         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5676         struct lpfc_nodelist *ndlp;
5677         unsigned long iflags;
5678
5679         spin_lock_irqsave(shost->host_lock, iflags);
5680         ndlp = __lpfc_findnode_did(vport, did);
5681         spin_unlock_irqrestore(shost->host_lock, iflags);
5682         return ndlp;
5683 }
5684
5685 struct lpfc_nodelist *
5686 lpfc_findnode_mapped(struct lpfc_vport *vport)
5687 {
5688         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5689         struct lpfc_nodelist *ndlp;
5690         uint32_t data1;
5691         unsigned long iflags;
5692
5693         spin_lock_irqsave(shost->host_lock, iflags);
5694
5695         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5696                 if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE ||
5697                     ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
5698                         data1 = (((uint32_t)ndlp->nlp_state << 24) |
5699                                  ((uint32_t)ndlp->nlp_xri << 16) |
5700                                  ((uint32_t)ndlp->nlp_type << 8) |
5701                                  ((uint32_t)ndlp->nlp_rpi & 0xff));
5702                         spin_unlock_irqrestore(shost->host_lock, iflags);
5703                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5704                                          "2025 FIND node DID "
5705                                          "Data: x%px x%x x%x x%x x%px\n",
5706                                          ndlp, ndlp->nlp_DID,
5707                                          ndlp->nlp_flag, data1,
5708                                          ndlp->active_rrqs_xri_bitmap);
5709                         return ndlp;
5710                 }
5711         }
5712         spin_unlock_irqrestore(shost->host_lock, iflags);
5713
5714         /* FIND node did <did> NOT FOUND */
5715         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5716                          "2026 FIND mapped did NOT FOUND.\n");
5717         return NULL;
5718 }
5719
5720 struct lpfc_nodelist *
5721 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
5722 {
5723         struct lpfc_nodelist *ndlp;
5724
5725         ndlp = lpfc_findnode_did(vport, did);
5726         if (!ndlp) {
5727                 if (vport->phba->nvmet_support)
5728                         return NULL;
5729                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
5730                     lpfc_rscn_payload_check(vport, did) == 0)
5731                         return NULL;
5732                 ndlp = lpfc_nlp_init(vport, did);
5733                 if (!ndlp)
5734                         return NULL;
5735                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5736
5737                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5738                                  "6453 Setup New Node 2B_DISC x%x "
5739                                  "Data:x%x x%x x%x\n",
5740                                  ndlp->nlp_DID, ndlp->nlp_flag,
5741                                  ndlp->nlp_state, vport->fc_flag);
5742
5743                 spin_lock_irq(&ndlp->lock);
5744                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5745                 spin_unlock_irq(&ndlp->lock);
5746                 return ndlp;
5747         }
5748
5749         /* The NVME Target does not want to actively manage an rport.
5750          * The goal is to allow the target to reset its state and clear
5751          * pending IO in preparation for the initiator to recover.
5752          */
5753         if ((vport->fc_flag & FC_RSCN_MODE) &&
5754             !(vport->fc_flag & FC_NDISC_ACTIVE)) {
5755                 if (lpfc_rscn_payload_check(vport, did)) {
5756
5757                         /* Since this node is marked for discovery,
5758                          * delay timeout is not needed.
5759                          */
5760                         lpfc_cancel_retry_delay_tmo(vport, ndlp);
5761
5762                         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5763                                          "6455 Setup RSCN Node 2B_DISC x%x "
5764                                          "Data:x%x x%x x%x\n",
5765                                          ndlp->nlp_DID, ndlp->nlp_flag,
5766                                          ndlp->nlp_state, vport->fc_flag);
5767
5768                         /* NVME Target mode waits until rport is known to be
5769                          * impacted by the RSCN before it transitions.  No
5770                          * active management - just go to NPR provided the
5771                          * node had a valid login.
5772                          */
5773                         if (vport->phba->nvmet_support)
5774                                 return ndlp;
5775
5776                         /* If we've already received a PLOGI from this NPort
5777                          * we don't need to try to discover it again.
5778                          */
5779                         if (ndlp->nlp_flag & NLP_RCV_PLOGI &&
5780                             !(ndlp->nlp_type &
5781                              (NLP_FCP_TARGET | NLP_NVME_TARGET)))
5782                                 return NULL;
5783
5784                         if (ndlp->nlp_state > NLP_STE_UNUSED_NODE &&
5785                             ndlp->nlp_state < NLP_STE_PRLI_ISSUE) {
5786                                 lpfc_disc_state_machine(vport, ndlp, NULL,
5787                                                         NLP_EVT_DEVICE_RECOVERY);
5788                         }
5789
5790                         spin_lock_irq(&ndlp->lock);
5791                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5792                         spin_unlock_irq(&ndlp->lock);
5793                 } else {
5794                         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5795                                          "6456 Skip Setup RSCN Node x%x "
5796                                          "Data:x%x x%x x%x\n",
5797                                          ndlp->nlp_DID, ndlp->nlp_flag,
5798                                          ndlp->nlp_state, vport->fc_flag);
5799                         ndlp = NULL;
5800                 }
5801         } else {
5802                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5803                                  "6457 Setup Active Node 2B_DISC x%x "
5804                                  "Data:x%x x%x x%x\n",
5805                                  ndlp->nlp_DID, ndlp->nlp_flag,
5806                                  ndlp->nlp_state, vport->fc_flag);
5807
5808                 /* If the initiator received a PLOGI from this NPort or if the
5809                  * initiator is already in the process of discovery on it,
5810                  * there's no need to try to discover it again.
5811                  */
5812                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
5813                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5814                     (!vport->phba->nvmet_support &&
5815                      ndlp->nlp_flag & NLP_RCV_PLOGI))
5816                         return NULL;
5817
5818                 if (vport->phba->nvmet_support)
5819                         return ndlp;
5820
5821                 /* Moving to NPR state clears unsolicited flags and
5822                  * allows for rediscovery
5823                  */
5824                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5825
5826                 spin_lock_irq(&ndlp->lock);
5827                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5828                 spin_unlock_irq(&ndlp->lock);
5829         }
5830         return ndlp;
5831 }
5832
5833 /* Build a list of nodes to discover based on the loopmap */
5834 void
5835 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
5836 {
5837         struct lpfc_hba  *phba = vport->phba;
5838         int j;
5839         uint32_t alpa, index;
5840
5841         if (!lpfc_is_link_up(phba))
5842                 return;
5843
5844         if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
5845                 return;
5846
5847         /* Check for loop map present or not */
5848         if (phba->alpa_map[0]) {
5849                 for (j = 1; j <= phba->alpa_map[0]; j++) {
5850                         alpa = phba->alpa_map[j];
5851                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
5852                                 continue;
5853                         lpfc_setup_disc_node(vport, alpa);
5854                 }
5855         } else {
5856                 /* No alpamap, so try all alpa's */
5857                 for (j = 0; j < FC_MAXLOOP; j++) {
5858                         /* If cfg_scan_down is set, start from highest
5859                          * ALPA (0xef) to lowest (0x1).
5860                          */
5861                         if (vport->cfg_scan_down)
5862                                 index = j;
5863                         else
5864                                 index = FC_MAXLOOP - j - 1;
5865                         alpa = lpfcAlpaArray[index];
5866                         if ((vport->fc_myDID & 0xff) == alpa)
5867                                 continue;
5868                         lpfc_setup_disc_node(vport, alpa);
5869                 }
5870         }
5871         return;
5872 }
5873
5874 /* SLI3 only */
5875 void
5876 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
5877 {
5878         LPFC_MBOXQ_t *mbox;
5879         struct lpfc_sli *psli = &phba->sli;
5880         struct lpfc_sli_ring *extra_ring = &psli->sli3_ring[LPFC_EXTRA_RING];
5881         struct lpfc_sli_ring *fcp_ring   = &psli->sli3_ring[LPFC_FCP_RING];
5882         int  rc;
5883
5884         /*
5885          * if it's not a physical port or if we already send
5886          * clear_la then don't send it.
5887          */
5888         if ((phba->link_state >= LPFC_CLEAR_LA) ||
5889             (vport->port_type != LPFC_PHYSICAL_PORT) ||
5890                 (phba->sli_rev == LPFC_SLI_REV4))
5891                 return;
5892
5893                         /* Link up discovery */
5894         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
5895                 phba->link_state = LPFC_CLEAR_LA;
5896                 lpfc_clear_la(phba, mbox);
5897                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
5898                 mbox->vport = vport;
5899                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5900                 if (rc == MBX_NOT_FINISHED) {
5901                         mempool_free(mbox, phba->mbox_mem_pool);
5902                         lpfc_disc_flush_list(vport);
5903                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5904                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5905                         phba->link_state = LPFC_HBA_ERROR;
5906                 }
5907         }
5908 }
5909
5910 /* Reg_vpi to tell firmware to resume normal operations */
5911 void
5912 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
5913 {
5914         LPFC_MBOXQ_t *regvpimbox;
5915
5916         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5917         if (regvpimbox) {
5918                 lpfc_reg_vpi(vport, regvpimbox);
5919                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
5920                 regvpimbox->vport = vport;
5921                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
5922                                         == MBX_NOT_FINISHED) {
5923                         mempool_free(regvpimbox, phba->mbox_mem_pool);
5924                 }
5925         }
5926 }
5927
5928 /* Start Link up / RSCN discovery on NPR nodes */
5929 void
5930 lpfc_disc_start(struct lpfc_vport *vport)
5931 {
5932         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5933         struct lpfc_hba  *phba = vport->phba;
5934         uint32_t num_sent;
5935         uint32_t clear_la_pending;
5936
5937         if (!lpfc_is_link_up(phba)) {
5938                 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
5939                                  "3315 Link is not up %x\n",
5940                                  phba->link_state);
5941                 return;
5942         }
5943
5944         if (phba->link_state == LPFC_CLEAR_LA)
5945                 clear_la_pending = 1;
5946         else
5947                 clear_la_pending = 0;
5948
5949         if (vport->port_state < LPFC_VPORT_READY)
5950                 vport->port_state = LPFC_DISC_AUTH;
5951
5952         lpfc_set_disctmo(vport);
5953
5954         vport->fc_prevDID = vport->fc_myDID;
5955         vport->num_disc_nodes = 0;
5956
5957         /* Start Discovery state <hba_state> */
5958         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5959                          "0202 Start Discovery port state x%x "
5960                          "flg x%x Data: x%x x%x x%x\n",
5961                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
5962                          vport->fc_adisc_cnt, vport->fc_npr_cnt);
5963
5964         /* First do ADISCs - if any */
5965         num_sent = lpfc_els_disc_adisc(vport);
5966
5967         if (num_sent)
5968                 return;
5969
5970         /* Register the VPI for SLI3, NPIV only. */
5971         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
5972             !(vport->fc_flag & FC_PT2PT) &&
5973             !(vport->fc_flag & FC_RSCN_MODE) &&
5974             (phba->sli_rev < LPFC_SLI_REV4)) {
5975                 lpfc_issue_clear_la(phba, vport);
5976                 lpfc_issue_reg_vpi(phba, vport);
5977                 return;
5978         }
5979
5980         /*
5981          * For SLI2, we need to set port_state to READY and continue
5982          * discovery.
5983          */
5984         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
5985                 /* If we get here, there is nothing to ADISC */
5986                 lpfc_issue_clear_la(phba, vport);
5987
5988                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
5989                         vport->num_disc_nodes = 0;
5990                         /* go thru NPR nodes and issue ELS PLOGIs */
5991                         if (vport->fc_npr_cnt)
5992                                 lpfc_els_disc_plogi(vport);
5993
5994                         if (!vport->num_disc_nodes) {
5995                                 spin_lock_irq(shost->host_lock);
5996                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
5997                                 spin_unlock_irq(shost->host_lock);
5998                                 lpfc_can_disctmo(vport);
5999                         }
6000                 }
6001                 vport->port_state = LPFC_VPORT_READY;
6002         } else {
6003                 /* Next do PLOGIs - if any */
6004                 num_sent = lpfc_els_disc_plogi(vport);
6005
6006                 if (num_sent)
6007                         return;
6008
6009                 if (vport->fc_flag & FC_RSCN_MODE) {
6010                         /* Check to see if more RSCNs came in while we
6011                          * were processing this one.
6012                          */
6013                         if ((vport->fc_rscn_id_cnt == 0) &&
6014                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
6015                                 spin_lock_irq(shost->host_lock);
6016                                 vport->fc_flag &= ~FC_RSCN_MODE;
6017                                 spin_unlock_irq(shost->host_lock);
6018                                 lpfc_can_disctmo(vport);
6019                         } else
6020                                 lpfc_els_handle_rscn(vport);
6021                 }
6022         }
6023         return;
6024 }
6025
6026 /*
6027  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
6028  *  ring the match the sppecified nodelist.
6029  */
6030 static void
6031 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
6032 {
6033         LIST_HEAD(completions);
6034         struct lpfc_iocbq    *iocb, *next_iocb;
6035         struct lpfc_sli_ring *pring;
6036         u32 ulp_command;
6037
6038         pring = lpfc_phba_elsring(phba);
6039         if (unlikely(!pring))
6040                 return;
6041
6042         /* Error matching iocb on txq or txcmplq
6043          * First check the txq.
6044          */
6045         spin_lock_irq(&phba->hbalock);
6046         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
6047                 if (iocb->ndlp != ndlp)
6048                         continue;
6049
6050                 ulp_command = get_job_cmnd(phba, iocb);
6051
6052                 if (ulp_command == CMD_ELS_REQUEST64_CR ||
6053                     ulp_command == CMD_XMIT_ELS_RSP64_CX) {
6054
6055                         list_move_tail(&iocb->list, &completions);
6056                 }
6057         }
6058
6059         /* Next check the txcmplq */
6060         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
6061                 if (iocb->ndlp != ndlp)
6062                         continue;
6063
6064                 ulp_command = get_job_cmnd(phba, iocb);
6065
6066                 if (ulp_command == CMD_ELS_REQUEST64_CR ||
6067                     ulp_command == CMD_XMIT_ELS_RSP64_CX) {
6068                         lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL);
6069                 }
6070         }
6071         spin_unlock_irq(&phba->hbalock);
6072
6073         /* Make sure HBA is alive */
6074         lpfc_issue_hb_tmo(phba);
6075
6076         /* Cancel all the IOCBs from the completions list */
6077         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
6078                               IOERR_SLI_ABORTED);
6079 }
6080
6081 static void
6082 lpfc_disc_flush_list(struct lpfc_vport *vport)
6083 {
6084         struct lpfc_nodelist *ndlp, *next_ndlp;
6085         struct lpfc_hba *phba = vport->phba;
6086
6087         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
6088                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6089                                          nlp_listp) {
6090                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
6091                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
6092                                 lpfc_free_tx(phba, ndlp);
6093                         }
6094                 }
6095         }
6096 }
6097
6098 /*
6099  * lpfc_notify_xport_npr - notifies xport of node disappearance
6100  * @vport: Pointer to Virtual Port object.
6101  *
6102  * Transitions all ndlps to NPR state.  When lpfc_nlp_set_state
6103  * calls lpfc_nlp_state_cleanup, the ndlp->rport is unregistered
6104  * and transport notified that the node is gone.
6105  * Return Code:
6106  *      none
6107  */
6108 static void
6109 lpfc_notify_xport_npr(struct lpfc_vport *vport)
6110 {
6111         struct lpfc_nodelist *ndlp, *next_ndlp;
6112
6113         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6114                                  nlp_listp) {
6115                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
6116         }
6117 }
6118 void
6119 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
6120 {
6121         lpfc_els_flush_rscn(vport);
6122         lpfc_els_flush_cmd(vport);
6123         lpfc_disc_flush_list(vport);
6124         if (pci_channel_offline(vport->phba->pcidev))
6125                 lpfc_notify_xport_npr(vport);
6126 }
6127
6128 /*****************************************************************************/
6129 /*
6130  * NAME:     lpfc_disc_timeout
6131  *
6132  * FUNCTION: Fibre Channel driver discovery timeout routine.
6133  *
6134  * EXECUTION ENVIRONMENT: interrupt only
6135  *
6136  * CALLED FROM:
6137  *      Timer function
6138  *
6139  * RETURNS:
6140  *      none
6141  */
6142 /*****************************************************************************/
6143 void
6144 lpfc_disc_timeout(struct timer_list *t)
6145 {
6146         struct lpfc_vport *vport = from_timer(vport, t, fc_disctmo);
6147         struct lpfc_hba   *phba = vport->phba;
6148         uint32_t tmo_posted;
6149         unsigned long flags = 0;
6150
6151         if (unlikely(!phba))
6152                 return;
6153
6154         spin_lock_irqsave(&vport->work_port_lock, flags);
6155         tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
6156         if (!tmo_posted)
6157                 vport->work_port_events |= WORKER_DISC_TMO;
6158         spin_unlock_irqrestore(&vport->work_port_lock, flags);
6159
6160         if (!tmo_posted)
6161                 lpfc_worker_wake_up(phba);
6162         return;
6163 }
6164
6165 static void
6166 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
6167 {
6168         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6169         struct lpfc_hba  *phba = vport->phba;
6170         struct lpfc_sli  *psli = &phba->sli;
6171         struct lpfc_nodelist *ndlp, *next_ndlp;
6172         LPFC_MBOXQ_t *initlinkmbox;
6173         int rc, clrlaerr = 0;
6174
6175         if (!(vport->fc_flag & FC_DISC_TMO))
6176                 return;
6177
6178         spin_lock_irq(shost->host_lock);
6179         vport->fc_flag &= ~FC_DISC_TMO;
6180         spin_unlock_irq(shost->host_lock);
6181
6182         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6183                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
6184                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
6185
6186         switch (vport->port_state) {
6187
6188         case LPFC_LOCAL_CFG_LINK:
6189                 /*
6190                  * port_state is identically  LPFC_LOCAL_CFG_LINK while
6191                  * waiting for FAN timeout
6192                  */
6193                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
6194                                  "0221 FAN timeout\n");
6195
6196                 /* Start discovery by sending FLOGI, clean up old rpis */
6197                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6198                                          nlp_listp) {
6199                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
6200                                 continue;
6201                         if (ndlp->nlp_type & NLP_FABRIC) {
6202                                 /* Clean up the ndlp on Fabric connections */
6203                                 lpfc_drop_node(vport, ndlp);
6204
6205                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
6206                                 /* Fail outstanding IO now since device
6207                                  * is marked for PLOGI.
6208                                  */
6209                                 lpfc_unreg_rpi(vport, ndlp);
6210                         }
6211                 }
6212                 if (vport->port_state != LPFC_FLOGI) {
6213                         if (phba->sli_rev <= LPFC_SLI_REV3)
6214                                 lpfc_initial_flogi(vport);
6215                         else
6216                                 lpfc_issue_init_vfi(vport);
6217                         return;
6218                 }
6219                 break;
6220
6221         case LPFC_FDISC:
6222         case LPFC_FLOGI:
6223         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
6224                 /* Initial FLOGI timeout */
6225                 lpfc_printf_vlog(vport, KERN_ERR,
6226                                  LOG_TRACE_EVENT,
6227                                  "0222 Initial %s timeout\n",
6228                                  vport->vpi ? "FDISC" : "FLOGI");
6229
6230                 /* Assume no Fabric and go on with discovery.
6231                  * Check for outstanding ELS FLOGI to abort.
6232                  */
6233
6234                 /* FLOGI failed, so just use loop map to make discovery list */
6235                 lpfc_disc_list_loopmap(vport);
6236
6237                 /* Start discovery */
6238                 lpfc_disc_start(vport);
6239                 break;
6240
6241         case LPFC_FABRIC_CFG_LINK:
6242         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
6243            NameServer login */
6244                 lpfc_printf_vlog(vport, KERN_ERR,
6245                                  LOG_TRACE_EVENT,
6246                                  "0223 Timeout while waiting for "
6247                                  "NameServer login\n");
6248                 /* Next look for NameServer ndlp */
6249                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
6250                 if (ndlp)
6251                         lpfc_els_abort(phba, ndlp);
6252
6253                 /* ReStart discovery */
6254                 goto restart_disc;
6255
6256         case LPFC_NS_QRY:
6257         /* Check for wait for NameServer Rsp timeout */
6258                 lpfc_printf_vlog(vport, KERN_ERR,
6259                                  LOG_TRACE_EVENT,
6260                                  "0224 NameServer Query timeout "
6261                                  "Data: x%x x%x\n",
6262                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
6263
6264                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
6265                         /* Try it one more time */
6266                         vport->fc_ns_retry++;
6267                         vport->gidft_inp = 0;
6268                         rc = lpfc_issue_gidft(vport);
6269                         if (rc == 0)
6270                                 break;
6271                 }
6272                 vport->fc_ns_retry = 0;
6273
6274 restart_disc:
6275                 /*
6276                  * Discovery is over.
6277                  * set port_state to PORT_READY if SLI2.
6278                  * cmpl_reg_vpi will set port_state to READY for SLI3.
6279                  */
6280                 if (phba->sli_rev < LPFC_SLI_REV4) {
6281                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
6282                                 lpfc_issue_reg_vpi(phba, vport);
6283                         else  {
6284                                 lpfc_issue_clear_la(phba, vport);
6285                                 vport->port_state = LPFC_VPORT_READY;
6286                         }
6287                 }
6288
6289                 /* Setup and issue mailbox INITIALIZE LINK command */
6290                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6291                 if (!initlinkmbox) {
6292                         lpfc_printf_vlog(vport, KERN_ERR,
6293                                          LOG_TRACE_EVENT,
6294                                          "0206 Device Discovery "
6295                                          "completion error\n");
6296                         phba->link_state = LPFC_HBA_ERROR;
6297                         break;
6298                 }
6299
6300                 lpfc_linkdown(phba);
6301                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
6302                                phba->cfg_link_speed);
6303                 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
6304                 initlinkmbox->vport = vport;
6305                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
6306                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
6307                 lpfc_set_loopback_flag(phba);
6308                 if (rc == MBX_NOT_FINISHED)
6309                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
6310
6311                 break;
6312
6313         case LPFC_DISC_AUTH:
6314         /* Node Authentication timeout */
6315                 lpfc_printf_vlog(vport, KERN_ERR,
6316                                  LOG_TRACE_EVENT,
6317                                  "0227 Node Authentication timeout\n");
6318                 lpfc_disc_flush_list(vport);
6319
6320                 /*
6321                  * set port_state to PORT_READY if SLI2.
6322                  * cmpl_reg_vpi will set port_state to READY for SLI3.
6323                  */
6324                 if (phba->sli_rev < LPFC_SLI_REV4) {
6325                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
6326                                 lpfc_issue_reg_vpi(phba, vport);
6327                         else  { /* NPIV Not enabled */
6328                                 lpfc_issue_clear_la(phba, vport);
6329                                 vport->port_state = LPFC_VPORT_READY;
6330                         }
6331                 }
6332                 break;
6333
6334         case LPFC_VPORT_READY:
6335                 if (vport->fc_flag & FC_RSCN_MODE) {
6336                         lpfc_printf_vlog(vport, KERN_ERR,
6337                                          LOG_TRACE_EVENT,
6338                                          "0231 RSCN timeout Data: x%x "
6339                                          "x%x x%x x%x\n",
6340                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY,
6341                                          vport->port_state, vport->gidft_inp);
6342
6343                         /* Cleanup any outstanding ELS commands */
6344                         lpfc_els_flush_cmd(vport);
6345
6346                         lpfc_els_flush_rscn(vport);
6347                         lpfc_disc_flush_list(vport);
6348                 }
6349                 break;
6350
6351         default:
6352                 lpfc_printf_vlog(vport, KERN_ERR,
6353                                  LOG_TRACE_EVENT,
6354                                  "0273 Unexpected discovery timeout, "
6355                                  "vport State x%x\n", vport->port_state);
6356                 break;
6357         }
6358
6359         switch (phba->link_state) {
6360         case LPFC_CLEAR_LA:
6361                                 /* CLEAR LA timeout */
6362                 lpfc_printf_vlog(vport, KERN_ERR,
6363                                  LOG_TRACE_EVENT,
6364                                  "0228 CLEAR LA timeout\n");
6365                 clrlaerr = 1;
6366                 break;
6367
6368         case LPFC_LINK_UP:
6369                 lpfc_issue_clear_la(phba, vport);
6370                 fallthrough;
6371         case LPFC_LINK_UNKNOWN:
6372         case LPFC_WARM_START:
6373         case LPFC_INIT_START:
6374         case LPFC_INIT_MBX_CMDS:
6375         case LPFC_LINK_DOWN:
6376         case LPFC_HBA_ERROR:
6377                 lpfc_printf_vlog(vport, KERN_ERR,
6378                                  LOG_TRACE_EVENT,
6379                                  "0230 Unexpected timeout, hba link "
6380                                  "state x%x\n", phba->link_state);
6381                 clrlaerr = 1;
6382                 break;
6383
6384         case LPFC_HBA_READY:
6385                 break;
6386         }
6387
6388         if (clrlaerr) {
6389                 lpfc_disc_flush_list(vport);
6390                 if (phba->sli_rev != LPFC_SLI_REV4) {
6391                         psli->sli3_ring[(LPFC_EXTRA_RING)].flag &=
6392                                 ~LPFC_STOP_IOCB_EVENT;
6393                         psli->sli3_ring[LPFC_FCP_RING].flag &=
6394                                 ~LPFC_STOP_IOCB_EVENT;
6395                 }
6396                 vport->port_state = LPFC_VPORT_READY;
6397         }
6398         return;
6399 }
6400
6401 /*
6402  * This routine handles processing a NameServer REG_LOGIN mailbox
6403  * command upon completion. It is setup in the LPFC_MBOXQ
6404  * as the completion routine when the command is
6405  * handed off to the SLI layer.
6406  */
6407 void
6408 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
6409 {
6410         MAILBOX_t *mb = &pmb->u.mb;
6411         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
6412         struct lpfc_vport    *vport = pmb->vport;
6413
6414         pmb->ctx_ndlp = NULL;
6415
6416         if (phba->sli_rev < LPFC_SLI_REV4)
6417                 ndlp->nlp_rpi = mb->un.varWords[0];
6418         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
6419         ndlp->nlp_type |= NLP_FABRIC;
6420         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
6421         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
6422                          "0004 rpi:%x DID:%x flg:%x %d x%px\n",
6423                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
6424                          kref_read(&ndlp->kref),
6425                          ndlp);
6426         /*
6427          * Start issuing Fabric-Device Management Interface (FDMI) command to
6428          * 0xfffffa (FDMI well known port).
6429          * DHBA -> DPRT -> RHBA -> RPA  (physical port)
6430          * DPRT -> RPRT (vports)
6431          */
6432         if (vport->port_type == LPFC_PHYSICAL_PORT) {
6433                 phba->link_flag &= ~LS_CT_VEN_RPA; /* For extra Vendor RPA */
6434                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA, 0);
6435         } else {
6436                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DPRT, 0);
6437         }
6438
6439
6440         /* decrement the node reference count held for this callback
6441          * function.
6442          */
6443         lpfc_nlp_put(ndlp);
6444         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
6445         return;
6446 }
6447
6448 static int
6449 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
6450 {
6451         uint16_t *rpi = param;
6452
6453         return ndlp->nlp_rpi == *rpi;
6454 }
6455
6456 static int
6457 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
6458 {
6459         return memcmp(&ndlp->nlp_portname, param,
6460                       sizeof(ndlp->nlp_portname)) == 0;
6461 }
6462
6463 static struct lpfc_nodelist *
6464 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
6465 {
6466         struct lpfc_nodelist *ndlp;
6467
6468         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
6469                 if (filter(ndlp, param)) {
6470                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6471                                          "3185 FIND node filter %ps DID "
6472                                          "ndlp x%px did x%x flg x%x st x%x "
6473                                          "xri x%x type x%x rpi x%x\n",
6474                                          filter, ndlp, ndlp->nlp_DID,
6475                                          ndlp->nlp_flag, ndlp->nlp_state,
6476                                          ndlp->nlp_xri, ndlp->nlp_type,
6477                                          ndlp->nlp_rpi);
6478                         return ndlp;
6479                 }
6480         }
6481         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6482                          "3186 FIND node filter %ps NOT FOUND.\n", filter);
6483         return NULL;
6484 }
6485
6486 /*
6487  * This routine looks up the ndlp lists for the given RPI. If rpi found it
6488  * returns the node list element pointer else return NULL.
6489  */
6490 struct lpfc_nodelist *
6491 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6492 {
6493         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
6494 }
6495
6496 /*
6497  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
6498  * returns the node element list pointer else return NULL.
6499  */
6500 struct lpfc_nodelist *
6501 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
6502 {
6503         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6504         struct lpfc_nodelist *ndlp;
6505
6506         spin_lock_irq(shost->host_lock);
6507         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
6508         spin_unlock_irq(shost->host_lock);
6509         return ndlp;
6510 }
6511
6512 /*
6513  * This routine looks up the ndlp lists for the given RPI. If the rpi
6514  * is found, the routine returns the node element list pointer else
6515  * return NULL.
6516  */
6517 struct lpfc_nodelist *
6518 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6519 {
6520         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6521         struct lpfc_nodelist *ndlp;
6522         unsigned long flags;
6523
6524         spin_lock_irqsave(shost->host_lock, flags);
6525         ndlp = __lpfc_findnode_rpi(vport, rpi);
6526         spin_unlock_irqrestore(shost->host_lock, flags);
6527         return ndlp;
6528 }
6529
6530 /**
6531  * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
6532  * @phba: pointer to lpfc hba data structure.
6533  * @vpi: the physical host virtual N_Port identifier.
6534  *
6535  * This routine finds a vport on a HBA (referred by @phba) through a
6536  * @vpi. The function walks the HBA's vport list and returns the address
6537  * of the vport with the matching @vpi.
6538  *
6539  * Return code
6540  *    NULL - No vport with the matching @vpi found
6541  *    Otherwise - Address to the vport with the matching @vpi.
6542  **/
6543 struct lpfc_vport *
6544 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
6545 {
6546         struct lpfc_vport *vport;
6547         unsigned long flags;
6548         int i = 0;
6549
6550         /* The physical ports are always vpi 0 - translate is unnecessary. */
6551         if (vpi > 0) {
6552                 /*
6553                  * Translate the physical vpi to the logical vpi.  The
6554                  * vport stores the logical vpi.
6555                  */
6556                 for (i = 0; i <= phba->max_vpi; i++) {
6557                         if (vpi == phba->vpi_ids[i])
6558                                 break;
6559                 }
6560
6561                 if (i > phba->max_vpi) {
6562                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6563                                         "2936 Could not find Vport mapped "
6564                                         "to vpi %d\n", vpi);
6565                         return NULL;
6566                 }
6567         }
6568
6569         spin_lock_irqsave(&phba->port_list_lock, flags);
6570         list_for_each_entry(vport, &phba->port_list, listentry) {
6571                 if (vport->vpi == i) {
6572                         spin_unlock_irqrestore(&phba->port_list_lock, flags);
6573                         return vport;
6574                 }
6575         }
6576         spin_unlock_irqrestore(&phba->port_list_lock, flags);
6577         return NULL;
6578 }
6579
6580 struct lpfc_nodelist *
6581 lpfc_nlp_init(struct lpfc_vport *vport, uint32_t did)
6582 {
6583         struct lpfc_nodelist *ndlp;
6584         int rpi = LPFC_RPI_ALLOC_ERROR;
6585
6586         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6587                 rpi = lpfc_sli4_alloc_rpi(vport->phba);
6588                 if (rpi == LPFC_RPI_ALLOC_ERROR)
6589                         return NULL;
6590         }
6591
6592         ndlp = mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
6593         if (!ndlp) {
6594                 if (vport->phba->sli_rev == LPFC_SLI_REV4)
6595                         lpfc_sli4_free_rpi(vport->phba, rpi);
6596                 return NULL;
6597         }
6598
6599         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
6600
6601         spin_lock_init(&ndlp->lock);
6602
6603         lpfc_initialize_node(vport, ndlp, did);
6604         INIT_LIST_HEAD(&ndlp->nlp_listp);
6605         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6606                 ndlp->nlp_rpi = rpi;
6607                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
6608                                  "0007 Init New ndlp x%px, rpi:x%x DID:%x "
6609                                  "flg:x%x refcnt:%d\n",
6610                                  ndlp, ndlp->nlp_rpi, ndlp->nlp_DID,
6611                                  ndlp->nlp_flag, kref_read(&ndlp->kref));
6612
6613                 ndlp->active_rrqs_xri_bitmap =
6614                                 mempool_alloc(vport->phba->active_rrq_pool,
6615                                               GFP_KERNEL);
6616                 if (ndlp->active_rrqs_xri_bitmap)
6617                         memset(ndlp->active_rrqs_xri_bitmap, 0,
6618                                ndlp->phba->cfg_rrq_xri_bitmap_sz);
6619         }
6620
6621
6622
6623         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
6624                 "node init:       did:x%x",
6625                 ndlp->nlp_DID, 0, 0);
6626
6627         return ndlp;
6628 }
6629
6630 /* This routine releases all resources associated with a specifc NPort's ndlp
6631  * and mempool_free's the nodelist.
6632  */
6633 static void
6634 lpfc_nlp_release(struct kref *kref)
6635 {
6636         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
6637                                                   kref);
6638         struct lpfc_vport *vport = ndlp->vport;
6639
6640         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6641                 "node release:    did:x%x flg:x%x type:x%x",
6642                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
6643
6644         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6645                          "0279 %s: ndlp: x%px did %x refcnt:%d rpi:%x\n",
6646                          __func__, ndlp, ndlp->nlp_DID,
6647                          kref_read(&ndlp->kref), ndlp->nlp_rpi);
6648
6649         /* remove ndlp from action. */
6650         lpfc_cancel_retry_delay_tmo(vport, ndlp);
6651         lpfc_cleanup_node(vport, ndlp);
6652
6653         /* Not all ELS transactions have registered the RPI with the port.
6654          * In these cases the rpi usage is temporary and the node is
6655          * released when the WQE is completed.  Catch this case to free the
6656          * RPI to the pool.  Because this node is in the release path, a lock
6657          * is unnecessary.  All references are gone and the node has been
6658          * dequeued.
6659          */
6660         if (ndlp->nlp_flag & NLP_RELEASE_RPI) {
6661                 if (ndlp->nlp_rpi != LPFC_RPI_ALLOC_ERROR &&
6662                     !(ndlp->nlp_flag & (NLP_RPI_REGISTERED | NLP_UNREG_INP))) {
6663                         lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi);
6664                         ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
6665                 }
6666         }
6667
6668         /* The node is not freed back to memory, it is released to a pool so
6669          * the node fields need to be cleaned up.
6670          */
6671         ndlp->vport = NULL;
6672         ndlp->nlp_state = NLP_STE_FREED_NODE;
6673         ndlp->nlp_flag = 0;
6674         ndlp->fc4_xpt_flags = 0;
6675
6676         /* free ndlp memory for final ndlp release */
6677         if (ndlp->phba->sli_rev == LPFC_SLI_REV4)
6678                 mempool_free(ndlp->active_rrqs_xri_bitmap,
6679                                 ndlp->phba->active_rrq_pool);
6680         mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
6681 }
6682
6683 /* This routine bumps the reference count for a ndlp structure to ensure
6684  * that one discovery thread won't free a ndlp while another discovery thread
6685  * is using it.
6686  */
6687 struct lpfc_nodelist *
6688 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
6689 {
6690         unsigned long flags;
6691
6692         if (ndlp) {
6693                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6694                         "node get:        did:x%x flg:x%x refcnt:x%x",
6695                         ndlp->nlp_DID, ndlp->nlp_flag,
6696                         kref_read(&ndlp->kref));
6697
6698                 /* The check of ndlp usage to prevent incrementing the
6699                  * ndlp reference count that is in the process of being
6700                  * released.
6701                  */
6702                 spin_lock_irqsave(&ndlp->lock, flags);
6703                 if (!kref_get_unless_zero(&ndlp->kref)) {
6704                         spin_unlock_irqrestore(&ndlp->lock, flags);
6705                         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
6706                                 "0276 %s: ndlp:x%px refcnt:%d\n",
6707                                 __func__, (void *)ndlp, kref_read(&ndlp->kref));
6708                         return NULL;
6709                 }
6710                 spin_unlock_irqrestore(&ndlp->lock, flags);
6711         } else {
6712                 WARN_ONCE(!ndlp, "**** %s, get ref on NULL ndlp!", __func__);
6713         }
6714
6715         return ndlp;
6716 }
6717
6718 /* This routine decrements the reference count for a ndlp structure. If the
6719  * count goes to 0, this indicates the associated nodelist should be freed.
6720  */
6721 int
6722 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
6723 {
6724         if (ndlp) {
6725                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6726                                 "node put:        did:x%x flg:x%x refcnt:x%x",
6727                                 ndlp->nlp_DID, ndlp->nlp_flag,
6728                                 kref_read(&ndlp->kref));
6729         } else {
6730                 WARN_ONCE(!ndlp, "**** %s, put ref on NULL ndlp!", __func__);
6731         }
6732
6733         return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0;
6734 }
6735
6736 /**
6737  * lpfc_fcf_inuse - Check if FCF can be unregistered.
6738  * @phba: Pointer to hba context object.
6739  *
6740  * This function iterate through all FC nodes associated
6741  * will all vports to check if there is any node with
6742  * fc_rports associated with it. If there is an fc_rport
6743  * associated with the node, then the node is either in
6744  * discovered state or its devloss_timer is pending.
6745  */
6746 static int
6747 lpfc_fcf_inuse(struct lpfc_hba *phba)
6748 {
6749         struct lpfc_vport **vports;
6750         int i, ret = 0;
6751         struct lpfc_nodelist *ndlp;
6752         struct Scsi_Host  *shost;
6753
6754         vports = lpfc_create_vport_work_array(phba);
6755
6756         /* If driver cannot allocate memory, indicate fcf is in use */
6757         if (!vports)
6758                 return 1;
6759
6760         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6761                 shost = lpfc_shost_from_vport(vports[i]);
6762                 spin_lock_irq(shost->host_lock);
6763                 /*
6764                  * IF the CVL_RCVD bit is not set then we have sent the
6765                  * flogi.
6766                  * If dev_loss fires while we are waiting we do not want to
6767                  * unreg the fcf.
6768                  */
6769                 if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) {
6770                         spin_unlock_irq(shost->host_lock);
6771                         ret =  1;
6772                         goto out;
6773                 }
6774                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
6775                         if (ndlp->rport &&
6776                           (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
6777                                 ret = 1;
6778                                 spin_unlock_irq(shost->host_lock);
6779                                 goto out;
6780                         } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
6781                                 ret = 1;
6782                                 lpfc_printf_log(phba, KERN_INFO,
6783                                                 LOG_NODE | LOG_DISCOVERY,
6784                                                 "2624 RPI %x DID %x flag %x "
6785                                                 "still logged in\n",
6786                                                 ndlp->nlp_rpi, ndlp->nlp_DID,
6787                                                 ndlp->nlp_flag);
6788                         }
6789                 }
6790                 spin_unlock_irq(shost->host_lock);
6791         }
6792 out:
6793         lpfc_destroy_vport_work_array(phba, vports);
6794         return ret;
6795 }
6796
6797 /**
6798  * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
6799  * @phba: Pointer to hba context object.
6800  * @mboxq: Pointer to mailbox object.
6801  *
6802  * This function frees memory associated with the mailbox command.
6803  */
6804 void
6805 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6806 {
6807         struct lpfc_vport *vport = mboxq->vport;
6808         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6809
6810         if (mboxq->u.mb.mbxStatus) {
6811                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6812                                 "2555 UNREG_VFI mbxStatus error x%x "
6813                                 "HBA state x%x\n",
6814                                 mboxq->u.mb.mbxStatus, vport->port_state);
6815         }
6816         spin_lock_irq(shost->host_lock);
6817         phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
6818         spin_unlock_irq(shost->host_lock);
6819         mempool_free(mboxq, phba->mbox_mem_pool);
6820         return;
6821 }
6822
6823 /**
6824  * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
6825  * @phba: Pointer to hba context object.
6826  * @mboxq: Pointer to mailbox object.
6827  *
6828  * This function frees memory associated with the mailbox command.
6829  */
6830 static void
6831 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6832 {
6833         struct lpfc_vport *vport = mboxq->vport;
6834
6835         if (mboxq->u.mb.mbxStatus) {
6836                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6837                                 "2550 UNREG_FCFI mbxStatus error x%x "
6838                                 "HBA state x%x\n",
6839                                 mboxq->u.mb.mbxStatus, vport->port_state);
6840         }
6841         mempool_free(mboxq, phba->mbox_mem_pool);
6842         return;
6843 }
6844
6845 /**
6846  * lpfc_unregister_fcf_prep - Unregister fcf record preparation
6847  * @phba: Pointer to hba context object.
6848  *
6849  * This function prepare the HBA for unregistering the currently registered
6850  * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
6851  * VFIs.
6852  */
6853 int
6854 lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
6855 {
6856         struct lpfc_vport **vports;
6857         struct lpfc_nodelist *ndlp;
6858         struct Scsi_Host *shost;
6859         int i = 0, rc;
6860
6861         /* Unregister RPIs */
6862         if (lpfc_fcf_inuse(phba))
6863                 lpfc_unreg_hba_rpis(phba);
6864
6865         /* At this point, all discovery is aborted */
6866         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
6867
6868         /* Unregister VPIs */
6869         vports = lpfc_create_vport_work_array(phba);
6870         if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
6871                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6872                         /* Stop FLOGI/FDISC retries */
6873                         ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
6874                         if (ndlp)
6875                                 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
6876                         lpfc_cleanup_pending_mbox(vports[i]);
6877                         if (phba->sli_rev == LPFC_SLI_REV4)
6878                                 lpfc_sli4_unreg_all_rpis(vports[i]);
6879                         lpfc_mbx_unreg_vpi(vports[i]);
6880                         shost = lpfc_shost_from_vport(vports[i]);
6881                         spin_lock_irq(shost->host_lock);
6882                         vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6883                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
6884                         spin_unlock_irq(shost->host_lock);
6885                 }
6886         lpfc_destroy_vport_work_array(phba, vports);
6887         if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) {
6888                 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
6889                 if (ndlp)
6890                         lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
6891                 lpfc_cleanup_pending_mbox(phba->pport);
6892                 if (phba->sli_rev == LPFC_SLI_REV4)
6893                         lpfc_sli4_unreg_all_rpis(phba->pport);
6894                 lpfc_mbx_unreg_vpi(phba->pport);
6895                 shost = lpfc_shost_from_vport(phba->pport);
6896                 spin_lock_irq(shost->host_lock);
6897                 phba->pport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6898                 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED;
6899                 spin_unlock_irq(shost->host_lock);
6900         }
6901
6902         /* Cleanup any outstanding ELS commands */
6903         lpfc_els_flush_all_cmd(phba);
6904
6905         /* Unregister the physical port VFI */
6906         rc = lpfc_issue_unreg_vfi(phba->pport);
6907         return rc;
6908 }
6909
6910 /**
6911  * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
6912  * @phba: Pointer to hba context object.
6913  *
6914  * This function issues synchronous unregister FCF mailbox command to HBA to
6915  * unregister the currently registered FCF record. The driver does not reset
6916  * the driver FCF usage state flags.
6917  *
6918  * Return 0 if successfully issued, none-zero otherwise.
6919  */
6920 int
6921 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
6922 {
6923         LPFC_MBOXQ_t *mbox;
6924         int rc;
6925
6926         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6927         if (!mbox) {
6928                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6929                                 "2551 UNREG_FCFI mbox allocation failed"
6930                                 "HBA state x%x\n", phba->pport->port_state);
6931                 return -ENOMEM;
6932         }
6933         lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
6934         mbox->vport = phba->pport;
6935         mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
6936         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
6937
6938         if (rc == MBX_NOT_FINISHED) {
6939                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6940                                 "2552 Unregister FCFI command failed rc x%x "
6941                                 "HBA state x%x\n",
6942                                 rc, phba->pport->port_state);
6943                 return -EINVAL;
6944         }
6945         return 0;
6946 }
6947
6948 /**
6949  * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
6950  * @phba: Pointer to hba context object.
6951  *
6952  * This function unregisters the currently reigstered FCF. This function
6953  * also tries to find another FCF for discovery by rescan the HBA FCF table.
6954  */
6955 void
6956 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
6957 {
6958         int rc;
6959
6960         /* Preparation for unregistering fcf */
6961         rc = lpfc_unregister_fcf_prep(phba);
6962         if (rc) {
6963                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6964                                 "2748 Failed to prepare for unregistering "
6965                                 "HBA's FCF record: rc=%d\n", rc);
6966                 return;
6967         }
6968
6969         /* Now, unregister FCF record and reset HBA FCF state */
6970         rc = lpfc_sli4_unregister_fcf(phba);
6971         if (rc)
6972                 return;
6973         /* Reset HBA FCF states after successful unregister FCF */
6974         spin_lock_irq(&phba->hbalock);
6975         phba->fcf.fcf_flag = 0;
6976         spin_unlock_irq(&phba->hbalock);
6977         phba->fcf.current_rec.flag = 0;
6978
6979         /*
6980          * If driver is not unloading, check if there is any other
6981          * FCF record that can be used for discovery.
6982          */
6983         if ((phba->pport->load_flag & FC_UNLOADING) ||
6984             (phba->link_state < LPFC_LINK_UP))
6985                 return;
6986
6987         /* This is considered as the initial FCF discovery scan */
6988         spin_lock_irq(&phba->hbalock);
6989         phba->fcf.fcf_flag |= FCF_INIT_DISC;
6990         spin_unlock_irq(&phba->hbalock);
6991
6992         /* Reset FCF roundrobin bmask for new discovery */
6993         lpfc_sli4_clear_fcf_rr_bmask(phba);
6994
6995         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
6996
6997         if (rc) {
6998                 spin_lock_irq(&phba->hbalock);
6999                 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
7000                 spin_unlock_irq(&phba->hbalock);
7001                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7002                                 "2553 lpfc_unregister_unused_fcf failed "
7003                                 "to read FCF record HBA state x%x\n",
7004                                 phba->pport->port_state);
7005         }
7006 }
7007
7008 /**
7009  * lpfc_unregister_fcf - Unregister the currently registered fcf record
7010  * @phba: Pointer to hba context object.
7011  *
7012  * This function just unregisters the currently reigstered FCF. It does not
7013  * try to find another FCF for discovery.
7014  */
7015 void
7016 lpfc_unregister_fcf(struct lpfc_hba *phba)
7017 {
7018         int rc;
7019
7020         /* Preparation for unregistering fcf */
7021         rc = lpfc_unregister_fcf_prep(phba);
7022         if (rc) {
7023                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7024                                 "2749 Failed to prepare for unregistering "
7025                                 "HBA's FCF record: rc=%d\n", rc);
7026                 return;
7027         }
7028
7029         /* Now, unregister FCF record and reset HBA FCF state */
7030         rc = lpfc_sli4_unregister_fcf(phba);
7031         if (rc)
7032                 return;
7033         /* Set proper HBA FCF states after successful unregister FCF */
7034         spin_lock_irq(&phba->hbalock);
7035         phba->fcf.fcf_flag &= ~FCF_REGISTERED;
7036         spin_unlock_irq(&phba->hbalock);
7037 }
7038
7039 /**
7040  * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
7041  * @phba: Pointer to hba context object.
7042  *
7043  * This function check if there are any connected remote port for the FCF and
7044  * if all the devices are disconnected, this function unregister FCFI.
7045  * This function also tries to use another FCF for discovery.
7046  */
7047 void
7048 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
7049 {
7050         /*
7051          * If HBA is not running in FIP mode, if HBA does not support
7052          * FCoE, if FCF discovery is ongoing, or if FCF has not been
7053          * registered, do nothing.
7054          */
7055         spin_lock_irq(&phba->hbalock);
7056         if (!(phba->hba_flag & HBA_FCOE_MODE) ||
7057             !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
7058             !(phba->hba_flag & HBA_FIP_SUPPORT) ||
7059             (phba->fcf.fcf_flag & FCF_DISCOVERY) ||
7060             (phba->pport->port_state == LPFC_FLOGI)) {
7061                 spin_unlock_irq(&phba->hbalock);
7062                 return;
7063         }
7064         spin_unlock_irq(&phba->hbalock);
7065
7066         if (lpfc_fcf_inuse(phba))
7067                 return;
7068
7069         lpfc_unregister_fcf_rescan(phba);
7070 }
7071
7072 /**
7073  * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
7074  * @phba: Pointer to hba context object.
7075  * @buff: Buffer containing the FCF connection table as in the config
7076  *         region.
7077  * This function create driver data structure for the FCF connection
7078  * record table read from config region 23.
7079  */
7080 static void
7081 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
7082         uint8_t *buff)
7083 {
7084         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
7085         struct lpfc_fcf_conn_hdr *conn_hdr;
7086         struct lpfc_fcf_conn_rec *conn_rec;
7087         uint32_t record_count;
7088         int i;
7089
7090         /* Free the current connect table */
7091         list_for_each_entry_safe(conn_entry, next_conn_entry,
7092                 &phba->fcf_conn_rec_list, list) {
7093                 list_del_init(&conn_entry->list);
7094                 kfree(conn_entry);
7095         }
7096
7097         conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
7098         record_count = conn_hdr->length * sizeof(uint32_t)/
7099                 sizeof(struct lpfc_fcf_conn_rec);
7100
7101         conn_rec = (struct lpfc_fcf_conn_rec *)
7102                 (buff + sizeof(struct lpfc_fcf_conn_hdr));
7103
7104         for (i = 0; i < record_count; i++) {
7105                 if (!(conn_rec[i].flags & FCFCNCT_VALID))
7106                         continue;
7107                 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
7108                         GFP_KERNEL);
7109                 if (!conn_entry) {
7110                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7111                                         "2566 Failed to allocate connection"
7112                                         " table entry\n");
7113                         return;
7114                 }
7115
7116                 memcpy(&conn_entry->conn_rec, &conn_rec[i],
7117                         sizeof(struct lpfc_fcf_conn_rec));
7118                 list_add_tail(&conn_entry->list,
7119                         &phba->fcf_conn_rec_list);
7120         }
7121
7122         if (!list_empty(&phba->fcf_conn_rec_list)) {
7123                 i = 0;
7124                 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list,
7125                                     list) {
7126                         conn_rec = &conn_entry->conn_rec;
7127                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7128                                         "3345 FCF connection list rec[%02d]: "
7129                                         "flags:x%04x, vtag:x%04x, "
7130                                         "fabric_name:x%02x:%02x:%02x:%02x:"
7131                                         "%02x:%02x:%02x:%02x, "
7132                                         "switch_name:x%02x:%02x:%02x:%02x:"
7133                                         "%02x:%02x:%02x:%02x\n", i++,
7134                                         conn_rec->flags, conn_rec->vlan_tag,
7135                                         conn_rec->fabric_name[0],
7136                                         conn_rec->fabric_name[1],
7137                                         conn_rec->fabric_name[2],
7138                                         conn_rec->fabric_name[3],
7139                                         conn_rec->fabric_name[4],
7140                                         conn_rec->fabric_name[5],
7141                                         conn_rec->fabric_name[6],
7142                                         conn_rec->fabric_name[7],
7143                                         conn_rec->switch_name[0],
7144                                         conn_rec->switch_name[1],
7145                                         conn_rec->switch_name[2],
7146                                         conn_rec->switch_name[3],
7147                                         conn_rec->switch_name[4],
7148                                         conn_rec->switch_name[5],
7149                                         conn_rec->switch_name[6],
7150                                         conn_rec->switch_name[7]);
7151                 }
7152         }
7153 }
7154
7155 /**
7156  * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
7157  * @phba: Pointer to hba context object.
7158  * @buff: Buffer containing the FCoE parameter data structure.
7159  *
7160  *  This function update driver data structure with config
7161  *  parameters read from config region 23.
7162  */
7163 static void
7164 lpfc_read_fcoe_param(struct lpfc_hba *phba,
7165                         uint8_t *buff)
7166 {
7167         struct lpfc_fip_param_hdr *fcoe_param_hdr;
7168         struct lpfc_fcoe_params *fcoe_param;
7169
7170         fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
7171                 buff;
7172         fcoe_param = (struct lpfc_fcoe_params *)
7173                 (buff + sizeof(struct lpfc_fip_param_hdr));
7174
7175         if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
7176                 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
7177                 return;
7178
7179         if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
7180                 phba->valid_vlan = 1;
7181                 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
7182                         0xFFF;
7183         }
7184
7185         phba->fc_map[0] = fcoe_param->fc_map[0];
7186         phba->fc_map[1] = fcoe_param->fc_map[1];
7187         phba->fc_map[2] = fcoe_param->fc_map[2];
7188         return;
7189 }
7190
7191 /**
7192  * lpfc_get_rec_conf23 - Get a record type in config region data.
7193  * @buff: Buffer containing config region 23 data.
7194  * @size: Size of the data buffer.
7195  * @rec_type: Record type to be searched.
7196  *
7197  * This function searches config region data to find the beginning
7198  * of the record specified by record_type. If record found, this
7199  * function return pointer to the record else return NULL.
7200  */
7201 static uint8_t *
7202 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
7203 {
7204         uint32_t offset = 0, rec_length;
7205
7206         if ((buff[0] == LPFC_REGION23_LAST_REC) ||
7207                 (size < sizeof(uint32_t)))
7208                 return NULL;
7209
7210         rec_length = buff[offset + 1];
7211
7212         /*
7213          * One TLV record has one word header and number of data words
7214          * specified in the rec_length field of the record header.
7215          */
7216         while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
7217                 <= size) {
7218                 if (buff[offset] == rec_type)
7219                         return &buff[offset];
7220
7221                 if (buff[offset] == LPFC_REGION23_LAST_REC)
7222                         return NULL;
7223
7224                 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
7225                 rec_length = buff[offset + 1];
7226         }
7227         return NULL;
7228 }
7229
7230 /**
7231  * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
7232  * @phba: Pointer to lpfc_hba data structure.
7233  * @buff: Buffer containing config region 23 data.
7234  * @size: Size of the data buffer.
7235  *
7236  * This function parses the FCoE config parameters in config region 23 and
7237  * populate driver data structure with the parameters.
7238  */
7239 void
7240 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
7241                 uint8_t *buff,
7242                 uint32_t size)
7243 {
7244         uint32_t offset = 0;
7245         uint8_t *rec_ptr;
7246
7247         /*
7248          * If data size is less than 2 words signature and version cannot be
7249          * verified.
7250          */
7251         if (size < 2*sizeof(uint32_t))
7252                 return;
7253
7254         /* Check the region signature first */
7255         if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
7256                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7257                         "2567 Config region 23 has bad signature\n");
7258                 return;
7259         }
7260
7261         offset += 4;
7262
7263         /* Check the data structure version */
7264         if (buff[offset] != LPFC_REGION23_VERSION) {
7265                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7266                                 "2568 Config region 23 has bad version\n");
7267                 return;
7268         }
7269         offset += 4;
7270
7271         /* Read FCoE param record */
7272         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
7273                         size - offset, FCOE_PARAM_TYPE);
7274         if (rec_ptr)
7275                 lpfc_read_fcoe_param(phba, rec_ptr);
7276
7277         /* Read FCF connection table */
7278         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
7279                 size - offset, FCOE_CONN_TBL_TYPE);
7280         if (rec_ptr)
7281                 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
7282
7283 }
7284
7285 /*
7286  * lpfc_error_lost_link - IO failure from link event or FW reset check.
7287  *
7288  * @vport: Pointer to lpfc_vport data structure.
7289  * @ulp_status: IO completion status.
7290  * @ulp_word4: Reason code for the ulp_status.
7291  *
7292  * This function evaluates the ulp_status and ulp_word4 values
7293  * for specific error values that indicate an internal link fault
7294  * or fw reset event for the completing IO.  Callers require this
7295  * common data to decide next steps on the IO.
7296  *
7297  * Return:
7298  * false - No link or reset error occurred.
7299  * true - A link or reset error occurred.
7300  */
7301 bool
7302 lpfc_error_lost_link(struct lpfc_vport *vport, u32 ulp_status, u32 ulp_word4)
7303 {
7304         /* Mask off the extra port data to get just the reason code. */
7305         u32 rsn_code = IOERR_PARAM_MASK & ulp_word4;
7306
7307         if (ulp_status == IOSTAT_LOCAL_REJECT &&
7308             (rsn_code == IOERR_SLI_ABORTED ||
7309              rsn_code == IOERR_LINK_DOWN ||
7310              rsn_code == IOERR_SLI_DOWN)) {
7311                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI | LOG_ELS,
7312                                  "0408 Report link error true: <x%x:x%x>\n",
7313                                  ulp_status, ulp_word4);
7314                 return true;
7315         }
7316
7317         return false;
7318 }