drivers/scsi/lpfc/lpfc_hbadisc.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2017-2023 Broadcom. All Rights Reserved. The term *
   5  * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.     *
   6  * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
   7  * EMULEX and SLI are trademarks of Emulex.                        *
   8  * www.broadcom.com                                                *
   9  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
  10  *                                                                 *
  11  * This program is free software; you can redistribute it and/or   *
  12  * modify it under the terms of version 2 of the GNU General       *
  13  * Public License as published by the Free Software Foundation.    *
  14  * This program is distributed in the hope that it will be useful. *
  15  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  16  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  17  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  18  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  19  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  20  * more details, a copy of which can be found in the file COPYING  *
  21  * included with this package.                                     *
  22  *******************************************************************/
  23
  24 #include <linux/blkdev.h>
  25 #include <linux/delay.h>
  26 #include <linux/slab.h>
  27 #include <linux/pci.h>
  28 #include <linux/kthread.h>
  29 #include <linux/interrupt.h>
  30 #include <linux/lockdep.h>
  31 #include <linux/utsname.h>
  32
  33 #include <scsi/scsi.h>
  34 #include <scsi/scsi_device.h>
  35 #include <scsi/scsi_host.h>
  36 #include <scsi/scsi_transport_fc.h>
  37 #include <scsi/fc/fc_fs.h>
  38
  39 #include "lpfc_hw4.h"
  40 #include "lpfc_hw.h"
  41 #include "lpfc_nl.h"
  42 #include "lpfc_disc.h"
  43 #include "lpfc_sli.h"
  44 #include "lpfc_sli4.h"
  45 #include "lpfc.h"
  46 #include "lpfc_scsi.h"
  47 #include "lpfc_nvme.h"
  48 #include "lpfc_logmsg.h"
  49 #include "lpfc_crtn.h"
  50 #include "lpfc_vport.h"
  51 #include "lpfc_debugfs.h"
  52
  53 /* AlpaArray for assignment of scsid for scan-down and bind_method */
  54 static uint8_t lpfcAlpaArray[] = {
  55         0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
  56         0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
  57         0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
  58         0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
  59         0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
  60         0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
  61         0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
  62         0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
  63         0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
  64         0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
  65         0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
  66         0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
  67         0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
  68 };
  69
  70 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
  71 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
  72 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
  73 static int lpfc_fcf_inuse(struct lpfc_hba *);
  74 static void lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *, LPFC_MBOXQ_t *);
  75 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba);
  76 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba);
  77
  78 static int
  79 lpfc_valid_xpt_node(struct lpfc_nodelist *ndlp)
  80 {
  81         if (ndlp->nlp_fc4_type ||
  82             ndlp->nlp_type & NLP_FABRIC)
  83                 return 1;
  84         return 0;
  85 }
  86 /* The source of a terminate rport I/O is either a dev_loss_tmo
  87  * event or a call to fc_remove_host.  While the rport should be
  88  * valid during these downcalls, the transport can call twice
  89  * in a single event.  This routine provides somoe protection
  90  * as the NDLP isn't really free, just released to the pool.
  91  */
  92 static int
  93 lpfc_rport_invalid(struct fc_rport *rport)
  94 {
  95         struct lpfc_rport_data *rdata;
  96         struct lpfc_nodelist *ndlp;
  97
  98         if (!rport) {
  99                 pr_err("**** %s: NULL rport, exit.\n", __func__);
 100                 return -EINVAL;
 101         }
 102
 103         rdata = rport->dd_data;
 104         if (!rdata) {
 105                 pr_err("**** %s: NULL dd_data on rport x%px SID x%x\n",
 106                        __func__, rport, rport->scsi_target_id);
 107                 return -EINVAL;
 108         }
 109
 110         ndlp = rdata->pnode;
 111         if (!rdata->pnode) {
 112                 pr_info("**** %s: NULL ndlp on rport x%px SID x%x\n",
 113                         __func__, rport, rport->scsi_target_id);
 114                 return -EINVAL;
 115         }
 116
 117         if (!ndlp->vport) {
 118                 pr_err("**** %s: Null vport on ndlp x%px, DID x%x rport x%px "
 119                        "SID x%x\n", __func__, ndlp, ndlp->nlp_DID, rport,
 120                        rport->scsi_target_id);
 121                 return -EINVAL;
 122         }
 123         return 0;
 124 }
 125
 126 void
 127 lpfc_terminate_rport_io(struct fc_rport *rport)
 128 {
 129         struct lpfc_rport_data *rdata;
 130         struct lpfc_nodelist *ndlp;
 131         struct lpfc_vport *vport;
 132
 133         if (lpfc_rport_invalid(rport))
 134                 return;
 135
 136         rdata = rport->dd_data;
 137         ndlp = rdata->pnode;
 138         vport = ndlp->vport;
 139         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 140                               "rport terminate: sid:x%x did:x%x flg:x%x",
 141                               ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 142
 143         if (ndlp->nlp_sid != NLP_NO_SID)
 144                 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 145 }
 146
 147 /*
 148  * This function will be called when dev_loss_tmo fire.
 149  */
 150 void
 151 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
 152 {
 153         struct lpfc_nodelist *ndlp;
 154         struct lpfc_vport *vport;
 155         struct lpfc_hba   *phba;
 156         struct lpfc_work_evt *evtp;
 157         unsigned long iflags;
 158
 159         ndlp = ((struct lpfc_rport_data *)rport->dd_data)->pnode;
 160         if (!ndlp)
 161                 return;
 162
 163         vport = ndlp->vport;
 164         phba  = vport->phba;
 165
 166         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 167                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
 168                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 169
 170         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 171                          "3181 dev_loss_callbk x%06x, rport x%px flg x%x "
 172                          "load_flag x%x refcnt %d state %d xpt x%x\n",
 173                          ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag,
 174                          vport->load_flag, kref_read(&ndlp->kref),
 175                          ndlp->nlp_state, ndlp->fc4_xpt_flags);
 176
 177         /* Don't schedule a worker thread event if the vport is going down.
 178          * The teardown process cleans up the node via lpfc_drop_node.
 179          */
 180         if (vport->load_flag & FC_UNLOADING) {
 181                 ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL;
 182                 ndlp->rport = NULL;
 183
 184                 ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD;
 185                 /* clear the NLP_XPT_REGD if the node is not registered
 186                  * with nvme-fc
 187                  */
 188                 if (ndlp->fc4_xpt_flags == NLP_XPT_REGD)
 189                         ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD;
 190
 191                 /* Remove the node reference from remote_port_add now.
 192                  * The driver will not call remote_port_delete.
 193                  */
 194                 lpfc_nlp_put(ndlp);
 195                 return;
 196         }
 197
 198         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 199                 return;
 200
 201         if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn))
 202                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 203                                  "6789 rport name %llx != node port name %llx",
 204                                  rport->port_name,
 205                                  wwn_to_u64(ndlp->nlp_portname.u.wwn));
 206
 207         evtp = &ndlp->dev_loss_evt;
 208
 209         if (!list_empty(&evtp->evt_listp)) {
 210                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 211                                  "6790 rport name %llx dev_loss_evt pending\n",
 212                                  rport->port_name);
 213                 return;
 214         }
 215
 216         spin_lock_irqsave(&ndlp->lock, iflags);
 217         ndlp->nlp_flag |= NLP_IN_DEV_LOSS;
 218
 219         /* If there is a PLOGI in progress, and we are in a
 220          * NLP_NPR_2B_DISC state, don't turn off the flag.
 221          */
 222         if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE)
 223                 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 224
 225         /*
 226          * The backend does not expect any more calls associated with this
 227          * rport. Remove the association between rport and ndlp.
 228          */
 229         ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD;
 230         ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL;
 231         ndlp->rport = NULL;
 232         spin_unlock_irqrestore(&ndlp->lock, iflags);
 233
 234         if (phba->worker_thread) {
 235                 /* We need to hold the node by incrementing the reference
 236                  * count until this queued work is done
 237                  */
 238                 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
 239
 240                 spin_lock_irqsave(&phba->hbalock, iflags);
 241                 if (evtp->evt_arg1) {
 242                         evtp->evt = LPFC_EVT_DEV_LOSS;
 243                         list_add_tail(&evtp->evt_listp, &phba->work_list);
 244                         lpfc_worker_wake_up(phba);
 245                 }
 246                 spin_unlock_irqrestore(&phba->hbalock, iflags);
 247         } else {
 248                 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 249                                  "3188 worker thread is stopped %s x%06x, "
 250                                  " rport x%px flg x%x load_flag x%x refcnt "
 251                                  "%d\n", __func__, ndlp->nlp_DID,
 252                                  ndlp->rport, ndlp->nlp_flag,
 253                                  vport->load_flag, kref_read(&ndlp->kref));
 254                 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) {
 255                         spin_lock_irqsave(&ndlp->lock, iflags);
 256                         /* Node is in dev loss.  No further transaction. */
 257                         ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
 258                         spin_unlock_irqrestore(&ndlp->lock, iflags);
 259                         lpfc_disc_state_machine(vport, ndlp, NULL,
 260                                                 NLP_EVT_DEVICE_RM);
 261                 }
 262
 263         }
 264
 265         return;
 266 }
 267
 268 /**
 269  * lpfc_check_inactive_vmid_one - VMID inactivity checker for a vport
 270  * @vport: Pointer to vport context object.
 271  *
 272  * This function checks for idle VMID entries related to a particular vport. If
 273  * found unused/idle, free them accordingly.
 274  **/
 275 static void lpfc_check_inactive_vmid_one(struct lpfc_vport *vport)
 276 {
 277         u16 keep;
 278         u32 difftime = 0, r, bucket;
 279         u64 *lta;
 280         int cpu;
 281         struct lpfc_vmid *vmp;
 282
 283         write_lock(&vport->vmid_lock);
 284
 285         if (!vport->cur_vmid_cnt)
 286                 goto out;
 287
 288         /* iterate through the table */
 289         hash_for_each(vport->hash_table, bucket, vmp, hnode) {
 290                 keep = 0;
 291                 if (vmp->flag & LPFC_VMID_REGISTERED) {
 292                         /* check if the particular VMID is in use */
 293                         /* for all available per cpu variable */
 294                         for_each_possible_cpu(cpu) {
 295                                 /* if last access time is less than timeout */
 296                                 lta = per_cpu_ptr(vmp->last_io_time, cpu);
 297                                 if (!lta)
 298                                         continue;
 299                                 difftime = (jiffies) - (*lta);
 300                                 if ((vport->vmid_inactivity_timeout *
 301                                      JIFFIES_PER_HR) > difftime) {
 302                                         keep = 1;
 303                                         break;
 304                                 }
 305                         }
 306
 307                         /* if none of the cpus have been used by the vm, */
 308                         /*  remove the entry if already registered */
 309                         if (!keep) {
 310                                 /* mark the entry for deregistration */
 311                                 vmp->flag = LPFC_VMID_DE_REGISTER;
 312                                 write_unlock(&vport->vmid_lock);
 313                                 if (vport->vmid_priority_tagging)
 314                                         r = lpfc_vmid_uvem(vport, vmp, false);
 315                                 else
 316                                         r = lpfc_vmid_cmd(vport,
 317                                                           SLI_CTAS_DAPP_IDENT,
 318                                                           vmp);
 319
 320                                 /* decrement number of active vms and mark */
 321                                 /* entry in slot as free */
 322                                 write_lock(&vport->vmid_lock);
 323                                 if (!r) {
 324                                         struct lpfc_vmid *ht = vmp;
 325
 326                                         vport->cur_vmid_cnt--;
 327                                         ht->flag = LPFC_VMID_SLOT_FREE;
 328                                         free_percpu(ht->last_io_time);
 329                                         ht->last_io_time = NULL;
 330                                         hash_del(&ht->hnode);
 331                                 }
 332                         }
 333                 }
 334         }
 335  out:
 336         write_unlock(&vport->vmid_lock);
 337 }
 338
 339 /**
 340  * lpfc_check_inactive_vmid - VMID inactivity checker
 341  * @phba: Pointer to hba context object.
 342  *
 343  * This function is called from the worker thread to determine if an entry in
 344  * the VMID table can be released since there was no I/O activity seen from that
 345  * particular VM for the specified time. When this happens, the entry in the
 346  * table is released and also the resources on the switch cleared.
 347  **/
 348
 349 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba)
 350 {
 351         struct lpfc_vport *vport;
 352         struct lpfc_vport **vports;
 353         int i;
 354
 355         vports = lpfc_create_vport_work_array(phba);
 356         if (!vports)
 357                 return;
 358
 359         for (i = 0; i <= phba->max_vports; i++) {
 360                 if ((!vports[i]) && (i == 0))
 361                         vport = phba->pport;
 362                 else
 363                         vport = vports[i];
 364                 if (!vport)
 365                         break;
 366
 367                 lpfc_check_inactive_vmid_one(vport);
 368         }
 369         lpfc_destroy_vport_work_array(phba, vports);
 370 }
 371
 372 /**
 373  * lpfc_check_nlp_post_devloss - Check to restore ndlp refcnt after devloss
 374  * @vport: Pointer to vport object.
 375  * @ndlp: Pointer to remote node object.
 376  *
 377  * If NLP_IN_RECOV_POST_DEV_LOSS flag was set due to outstanding recovery of
 378  * node during dev_loss_tmo processing, then this function restores the nlp_put
 379  * kref decrement from lpfc_dev_loss_tmo_handler.
 380  **/
 381 void
 382 lpfc_check_nlp_post_devloss(struct lpfc_vport *vport,
 383                             struct lpfc_nodelist *ndlp)
 384 {
 385         unsigned long iflags;
 386
 387         spin_lock_irqsave(&ndlp->lock, iflags);
 388         if (ndlp->save_flags & NLP_IN_RECOV_POST_DEV_LOSS) {
 389                 ndlp->save_flags &= ~NLP_IN_RECOV_POST_DEV_LOSS;
 390                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 391                 lpfc_nlp_get(ndlp);
 392                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY | LOG_NODE,
 393                                  "8438 Devloss timeout reversed on DID x%x "
 394                                  "refcnt %d ndlp %p flag x%x "
 395                                  "port_state = x%x\n",
 396                                  ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp,
 397                                  ndlp->nlp_flag, vport->port_state);
 398                 spin_lock_irqsave(&ndlp->lock, iflags);
 399         }
 400         spin_unlock_irqrestore(&ndlp->lock, iflags);
 401 }
 402
 403 /**
 404  * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler
 405  * @ndlp: Pointer to remote node object.
 406  *
 407  * This function is called from the worker thread when devloss timeout timer
 408  * expires. For SLI4 host, this routine shall return 1 when at lease one
 409  * remote node, including this @ndlp, is still in use of FCF; otherwise, this
 410  * routine shall return 0 when there is no remote node is still in use of FCF
 411  * when devloss timeout happened to this @ndlp.
 412  **/
 413 static int
 414 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 415 {
 416         struct lpfc_vport *vport;
 417         struct lpfc_hba   *phba;
 418         uint8_t *name;
 419         int warn_on = 0;
 420         int fcf_inuse = 0;
 421         bool recovering = false;
 422         struct fc_vport *fc_vport = NULL;
 423         unsigned long iflags;
 424
 425         vport = ndlp->vport;
 426         name = (uint8_t *)&ndlp->nlp_portname;
 427         phba = vport->phba;
 428
 429         if (phba->sli_rev == LPFC_SLI_REV4)
 430                 fcf_inuse = lpfc_fcf_inuse(phba);
 431
 432         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 433                               "rport devlosstmo:did:x%x type:x%x id:x%x",
 434                               ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_sid);
 435
 436         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 437                          "3182 %s x%06x, nflag x%x xflags x%x refcnt %d\n",
 438                          __func__, ndlp->nlp_DID, ndlp->nlp_flag,
 439                          ndlp->fc4_xpt_flags, kref_read(&ndlp->kref));
 440
 441         /* If the driver is recovering the rport, ignore devloss. */
 442         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
 443                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 444                                  "0284 Devloss timeout Ignored on "
 445                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 446                                  "NPort x%x\n",
 447                                  *name, *(name+1), *(name+2), *(name+3),
 448                                  *(name+4), *(name+5), *(name+6), *(name+7),
 449                                  ndlp->nlp_DID);
 450
 451                 spin_lock_irqsave(&ndlp->lock, iflags);
 452                 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
 453                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 454                 return fcf_inuse;
 455         }
 456
 457         /* Fabric nodes are done. */
 458         if (ndlp->nlp_type & NLP_FABRIC) {
 459                 spin_lock_irqsave(&ndlp->lock, iflags);
 460
 461                 /* The driver has to account for a race between any fabric
 462                  * node that's in recovery when dev_loss_tmo expires. When this
 463                  * happens, the driver has to allow node recovery.
 464                  */
 465                 switch (ndlp->nlp_DID) {
 466                 case Fabric_DID:
 467                         fc_vport = vport->fc_vport;
 468                         if (fc_vport) {
 469                                 /* NPIV path. */
 470                                 if (fc_vport->vport_state ==
 471                                     FC_VPORT_INITIALIZING)
 472                                         recovering = true;
 473                         } else {
 474                                 /* Physical port path. */
 475                                 if (phba->hba_flag & HBA_FLOGI_OUTSTANDING)
 476                                         recovering = true;
 477                         }
 478                         break;
 479                 case Fabric_Cntl_DID:
 480                         if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
 481                                 recovering = true;
 482                         break;
 483                 case FDMI_DID:
 484                         fallthrough;
 485                 case NameServer_DID:
 486                         if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
 487                             ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE)
 488                                 recovering = true;
 489                         break;
 490                 default:
 491                         /* Ensure the nlp_DID at least has the correct prefix.
 492                          * The fabric domain controller's last three nibbles
 493                          * vary so we handle it in the default case.
 494                          */
 495                         if (ndlp->nlp_DID & Fabric_DID_MASK) {
 496                                 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
 497                                     ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE)
 498                                         recovering = true;
 499                         }
 500                         break;
 501                 }
 502                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 503
 504                 /* Mark an NLP_IN_RECOV_POST_DEV_LOSS flag to know if reversing
 505                  * the following lpfc_nlp_put is necessary after fabric node is
 506                  * recovered.
 507                  */
 508                 if (recovering) {
 509                         lpfc_printf_vlog(vport, KERN_INFO,
 510                                          LOG_DISCOVERY | LOG_NODE,
 511                                          "8436 Devloss timeout marked on "
 512                                          "DID x%x refcnt %d ndlp %p "
 513                                          "flag x%x port_state = x%x\n",
 514                                          ndlp->nlp_DID, kref_read(&ndlp->kref),
 515                                          ndlp, ndlp->nlp_flag,
 516                                          vport->port_state);
 517                         spin_lock_irqsave(&ndlp->lock, iflags);
 518                         ndlp->save_flags |= NLP_IN_RECOV_POST_DEV_LOSS;
 519                         spin_unlock_irqrestore(&ndlp->lock, iflags);
 520                 } else if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
 521                         /* Fabric node fully recovered before this dev_loss_tmo
 522                          * queue work is processed.  Thus, ignore the
 523                          * dev_loss_tmo event.
 524                          */
 525                         lpfc_printf_vlog(vport, KERN_INFO,
 526                                          LOG_DISCOVERY | LOG_NODE,
 527                                          "8437 Devloss timeout ignored on "
 528                                          "DID x%x refcnt %d ndlp %p "
 529                                          "flag x%x port_state = x%x\n",
 530                                          ndlp->nlp_DID, kref_read(&ndlp->kref),
 531                                          ndlp, ndlp->nlp_flag,
 532                                          vport->port_state);
 533                         return fcf_inuse;
 534                 }
 535
 536                 spin_lock_irqsave(&ndlp->lock, iflags);
 537                 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
 538                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 539                 lpfc_nlp_put(ndlp);
 540                 return fcf_inuse;
 541         }
 542
 543         if (ndlp->nlp_sid != NLP_NO_SID) {
 544                 warn_on = 1;
 545                 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 546         }
 547
 548         if (warn_on) {
 549                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 550                                  "0203 Devloss timeout on "
 551                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 552                                  "NPort x%06x Data: x%x x%x x%x refcnt %d\n",
 553                                  *name, *(name+1), *(name+2), *(name+3),
 554                                  *(name+4), *(name+5), *(name+6), *(name+7),
 555                                  ndlp->nlp_DID, ndlp->nlp_flag,
 556                                  ndlp->nlp_state, ndlp->nlp_rpi,
 557                                  kref_read(&ndlp->kref));
 558         } else {
 559                 lpfc_printf_vlog(vport, KERN_INFO, LOG_TRACE_EVENT,
 560                                  "0204 Devloss timeout on "
 561                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 562                                  "NPort x%06x Data: x%x x%x x%x\n",
 563                                  *name, *(name+1), *(name+2), *(name+3),
 564                                  *(name+4), *(name+5), *(name+6), *(name+7),
 565                                  ndlp->nlp_DID, ndlp->nlp_flag,
 566                                  ndlp->nlp_state, ndlp->nlp_rpi);
 567         }
 568         spin_lock_irqsave(&ndlp->lock, iflags);
 569         ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
 570         spin_unlock_irqrestore(&ndlp->lock, iflags);
 571
 572         /* If we are devloss, but we are in the process of rediscovering the
 573          * ndlp, don't issue a NLP_EVT_DEVICE_RM event.
 574          */
 575         if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
 576             ndlp->nlp_state <= NLP_STE_PRLI_ISSUE) {
 577                 return fcf_inuse;
 578         }
 579
 580         if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD))
 581                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 582
 583         return fcf_inuse;
 584 }
 585
 586 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba)
 587 {
 588         struct lpfc_vport *vport;
 589         struct lpfc_vport **vports;
 590         int i;
 591
 592         vports = lpfc_create_vport_work_array(phba);
 593         if (!vports)
 594                 return;
 595
 596         for (i = 0; i <= phba->max_vports; i++) {
 597                 if ((!vports[i]) && (i == 0))
 598                         vport = phba->pport;
 599                 else
 600                         vport = vports[i];
 601                 if (!vport)
 602                         break;
 603
 604                 if (vport->vmid_flag & LPFC_VMID_ISSUE_QFPA) {
 605                         if (!lpfc_issue_els_qfpa(vport))
 606                                 vport->vmid_flag &= ~LPFC_VMID_ISSUE_QFPA;
 607                 }
 608         }
 609         lpfc_destroy_vport_work_array(phba, vports);
 610 }
 611
 612 /**
 613  * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler
 614  * @phba: Pointer to hba context object.
 615  * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler.
 616  * @nlp_did: remote node identifer with devloss timeout.
 617  *
 618  * This function is called from the worker thread after invoking devloss
 619  * timeout handler and releasing the reference count for the ndlp with
 620  * which the devloss timeout was handled for SLI4 host. For the devloss
 621  * timeout of the last remote node which had been in use of FCF, when this
 622  * routine is invoked, it shall be guaranteed that none of the remote are
 623  * in-use of FCF. When devloss timeout to the last remote using the FCF,
 624  * if the FIP engine is neither in FCF table scan process nor roundrobin
 625  * failover process, the in-use FCF shall be unregistered. If the FIP
 626  * engine is in FCF discovery process, the devloss timeout state shall
 627  * be set for either the FCF table scan process or roundrobin failover
 628  * process to unregister the in-use FCF.
 629  **/
 630 static void
 631 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse,
 632                                     uint32_t nlp_did)
 633 {
 634         /* If devloss timeout happened to a remote node when FCF had no
 635          * longer been in-use, do nothing.
 636          */
 637         if (!fcf_inuse)
 638                 return;
 639
 640         if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) {
 641                 spin_lock_irq(&phba->hbalock);
 642                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
 643                         if (phba->hba_flag & HBA_DEVLOSS_TMO) {
 644                                 spin_unlock_irq(&phba->hbalock);
 645                                 return;
 646                         }
 647                         phba->hba_flag |= HBA_DEVLOSS_TMO;
 648                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 649                                         "2847 Last remote node (x%x) using "
 650                                         "FCF devloss tmo\n", nlp_did);
 651                 }
 652                 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) {
 653                         spin_unlock_irq(&phba->hbalock);
 654                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 655                                         "2868 Devloss tmo to FCF rediscovery "
 656                                         "in progress\n");
 657                         return;
 658                 }
 659                 if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) {
 660                         spin_unlock_irq(&phba->hbalock);
 661                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 662                                         "2869 Devloss tmo to idle FIP engine, "
 663                                         "unreg in-use FCF and rescan.\n");
 664                         /* Unregister in-use FCF and rescan */
 665                         lpfc_unregister_fcf_rescan(phba);
 666                         return;
 667                 }
 668                 spin_unlock_irq(&phba->hbalock);
 669                 if (phba->hba_flag & FCF_TS_INPROG)
 670                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 671                                         "2870 FCF table scan in progress\n");
 672                 if (phba->hba_flag & FCF_RR_INPROG)
 673                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 674                                         "2871 FLOGI roundrobin FCF failover "
 675                                         "in progress\n");
 676         }
 677         lpfc_unregister_unused_fcf(phba);
 678 }
 679
 680 /**
 681  * lpfc_alloc_fast_evt - Allocates data structure for posting event
 682  * @phba: Pointer to hba context object.
 683  *
 684  * This function is called from the functions which need to post
 685  * events from interrupt context. This function allocates data
 686  * structure required for posting event. It also keeps track of
 687  * number of events pending and prevent event storm when there are
 688  * too many events.
 689  **/
 690 struct lpfc_fast_path_event *
 691 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
 692         struct lpfc_fast_path_event *ret;
 693
 694         /* If there are lot of fast event do not exhaust memory due to this */
 695         if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
 696                 return NULL;
 697
 698         ret = kzalloc(sizeof(struct lpfc_fast_path_event),
 699                         GFP_ATOMIC);
 700         if (ret) {
 701                 atomic_inc(&phba->fast_event_count);
 702                 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
 703                 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
 704         }
 705         return ret;
 706 }
 707
 708 /**
 709  * lpfc_free_fast_evt - Frees event data structure
 710  * @phba: Pointer to hba context object.
 711  * @evt:  Event object which need to be freed.
 712  *
 713  * This function frees the data structure required for posting
 714  * events.
 715  **/
 716 void
 717 lpfc_free_fast_evt(struct lpfc_hba *phba,
 718                 struct lpfc_fast_path_event *evt) {
 719
 720         atomic_dec(&phba->fast_event_count);
 721         kfree(evt);
 722 }
 723
 724 /**
 725  * lpfc_send_fastpath_evt - Posts events generated from fast path
 726  * @phba: Pointer to hba context object.
 727  * @evtp: Event data structure.
 728  *
 729  * This function is called from worker thread, when the interrupt
 730  * context need to post an event. This function posts the event
 731  * to fc transport netlink interface.
 732  **/
 733 static void
 734 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
 735                 struct lpfc_work_evt *evtp)
 736 {
 737         unsigned long evt_category, evt_sub_category;
 738         struct lpfc_fast_path_event *fast_evt_data;
 739         char *evt_data;
 740         uint32_t evt_data_size;
 741         struct Scsi_Host *shost;
 742
 743         fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
 744                 work_evt);
 745
 746         evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
 747         evt_sub_category = (unsigned long) fast_evt_data->un.
 748                         fabric_evt.subcategory;
 749         shost = lpfc_shost_from_vport(fast_evt_data->vport);
 750         if (evt_category == FC_REG_FABRIC_EVENT) {
 751                 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
 752                         evt_data = (char *) &fast_evt_data->un.read_check_error;
 753                         evt_data_size = sizeof(fast_evt_data->un.
 754                                 read_check_error);
 755                 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
 756                         (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
 757                         evt_data = (char *) &fast_evt_data->un.fabric_evt;
 758                         evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
 759                 } else {
 760                         lpfc_free_fast_evt(phba, fast_evt_data);
 761                         return;
 762                 }
 763         } else if (evt_category == FC_REG_SCSI_EVENT) {
 764                 switch (evt_sub_category) {
 765                 case LPFC_EVENT_QFULL:
 766                 case LPFC_EVENT_DEVBSY:
 767                         evt_data = (char *) &fast_evt_data->un.scsi_evt;
 768                         evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
 769                         break;
 770                 case LPFC_EVENT_CHECK_COND:
 771                         evt_data = (char *) &fast_evt_data->un.check_cond_evt;
 772                         evt_data_size =  sizeof(fast_evt_data->un.
 773                                 check_cond_evt);
 774                         break;
 775                 case LPFC_EVENT_VARQUEDEPTH:
 776                         evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
 777                         evt_data_size = sizeof(fast_evt_data->un.
 778                                 queue_depth_evt);
 779                         break;
 780                 default:
 781                         lpfc_free_fast_evt(phba, fast_evt_data);
 782                         return;
 783                 }
 784         } else {
 785                 lpfc_free_fast_evt(phba, fast_evt_data);
 786                 return;
 787         }
 788
 789         if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
 790                 fc_host_post_vendor_event(shost,
 791                         fc_get_event_number(),
 792                         evt_data_size,
 793                         evt_data,
 794                         LPFC_NL_VENDOR_ID);
 795
 796         lpfc_free_fast_evt(phba, fast_evt_data);
 797         return;
 798 }
 799
 800 static void
 801 lpfc_work_list_done(struct lpfc_hba *phba)
 802 {
 803         struct lpfc_work_evt  *evtp = NULL;
 804         struct lpfc_nodelist  *ndlp;
 805         int free_evt;
 806         int fcf_inuse;
 807         uint32_t nlp_did;
 808         bool hba_pci_err;
 809
 810         spin_lock_irq(&phba->hbalock);
 811         while (!list_empty(&phba->work_list)) {
 812                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 813                                  evt_listp);
 814                 spin_unlock_irq(&phba->hbalock);
 815                 hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags);
 816                 free_evt = 1;
 817                 switch (evtp->evt) {
 818                 case LPFC_EVT_ELS_RETRY:
 819                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 820                         if (!hba_pci_err) {
 821                                 lpfc_els_retry_delay_handler(ndlp);
 822                                 free_evt = 0; /* evt is part of ndlp */
 823                         }
 824                         /* decrement the node reference count held
 825                          * for this queued work
 826                          */
 827                         lpfc_nlp_put(ndlp);
 828                         break;
 829                 case LPFC_EVT_DEV_LOSS:
 830                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 831                         fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp);
 832                         free_evt = 0;
 833                         /* decrement the node reference count held for
 834                          * this queued work
 835                          */
 836                         nlp_did = ndlp->nlp_DID;
 837                         lpfc_nlp_put(ndlp);
 838                         if (phba->sli_rev == LPFC_SLI_REV4)
 839                                 lpfc_sli4_post_dev_loss_tmo_handler(phba,
 840                                                                     fcf_inuse,
 841                                                                     nlp_did);
 842                         break;
 843                 case LPFC_EVT_RECOVER_PORT:
 844                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 845                         if (!hba_pci_err) {
 846                                 lpfc_sli_abts_recover_port(ndlp->vport, ndlp);
 847                                 free_evt = 0;
 848                         }
 849                         /* decrement the node reference count held for
 850                          * this queued work
 851                          */
 852                         lpfc_nlp_put(ndlp);
 853                         break;
 854                 case LPFC_EVT_ONLINE:
 855                         if (phba->link_state < LPFC_LINK_DOWN)
 856                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 857                         else
 858                                 *(int *) (evtp->evt_arg1) = 0;
 859                         complete((struct completion *)(evtp->evt_arg2));
 860                         break;
 861                 case LPFC_EVT_OFFLINE_PREP:
 862                         if (phba->link_state >= LPFC_LINK_DOWN)
 863                                 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
 864                         *(int *)(evtp->evt_arg1) = 0;
 865                         complete((struct completion *)(evtp->evt_arg2));
 866                         break;
 867                 case LPFC_EVT_OFFLINE:
 868                         lpfc_offline(phba);
 869                         lpfc_sli_brdrestart(phba);
 870                         *(int *)(evtp->evt_arg1) =
 871                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 872                         lpfc_unblock_mgmt_io(phba);
 873                         complete((struct completion *)(evtp->evt_arg2));
 874                         break;
 875                 case LPFC_EVT_WARM_START:
 876                         lpfc_offline(phba);
 877                         lpfc_reset_barrier(phba);
 878                         lpfc_sli_brdreset(phba);
 879                         lpfc_hba_down_post(phba);
 880                         *(int *)(evtp->evt_arg1) =
 881                                 lpfc_sli_brdready(phba, HS_MBRDY);
 882                         lpfc_unblock_mgmt_io(phba);
 883                         complete((struct completion *)(evtp->evt_arg2));
 884                         break;
 885                 case LPFC_EVT_KILL:
 886                         lpfc_offline(phba);
 887                         *(int *)(evtp->evt_arg1)
 888                                 = (phba->pport->stopped)
 889                                         ? 0 : lpfc_sli_brdkill(phba);
 890                         lpfc_unblock_mgmt_io(phba);
 891                         complete((struct completion *)(evtp->evt_arg2));
 892                         break;
 893                 case LPFC_EVT_FASTPATH_MGMT_EVT:
 894                         lpfc_send_fastpath_evt(phba, evtp);
 895                         free_evt = 0;
 896                         break;
 897                 case LPFC_EVT_RESET_HBA:
 898                         if (!(phba->pport->load_flag & FC_UNLOADING))
 899                                 lpfc_reset_hba(phba);
 900                         break;
 901                 }
 902                 if (free_evt)
 903                         kfree(evtp);
 904                 spin_lock_irq(&phba->hbalock);
 905         }
 906         spin_unlock_irq(&phba->hbalock);
 907
 908 }
 909
 910 static void
 911 lpfc_work_done(struct lpfc_hba *phba)
 912 {
 913         struct lpfc_sli_ring *pring;
 914         uint32_t ha_copy, status, control, work_port_events;
 915         struct lpfc_vport **vports;
 916         struct lpfc_vport *vport;
 917         int i;
 918         bool hba_pci_err;
 919
 920         hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags);
 921         spin_lock_irq(&phba->hbalock);
 922         ha_copy = phba->work_ha;
 923         phba->work_ha = 0;
 924         spin_unlock_irq(&phba->hbalock);
 925         if (hba_pci_err)
 926                 ha_copy = 0;
 927
 928         /* First, try to post the next mailbox command to SLI4 device */
 929         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC && !hba_pci_err)
 930                 lpfc_sli4_post_async_mbox(phba);
 931
 932         if (ha_copy & HA_ERATT) {
 933                 /* Handle the error attention event */
 934                 lpfc_handle_eratt(phba);
 935
 936                 if (phba->fw_dump_cmpl) {
 937                         complete(phba->fw_dump_cmpl);
 938                         phba->fw_dump_cmpl = NULL;
 939                 }
 940         }
 941
 942         if (ha_copy & HA_MBATT)
 943                 lpfc_sli_handle_mb_event(phba);
 944
 945         if (ha_copy & HA_LATT)
 946                 lpfc_handle_latt(phba);
 947
 948         /* Handle VMID Events */
 949         if (lpfc_is_vmid_enabled(phba) && !hba_pci_err) {
 950                 if (phba->pport->work_port_events &
 951                     WORKER_CHECK_VMID_ISSUE_QFPA) {
 952                         lpfc_check_vmid_qfpa_issue(phba);
 953                         phba->pport->work_port_events &=
 954                                 ~WORKER_CHECK_VMID_ISSUE_QFPA;
 955                 }
 956                 if (phba->pport->work_port_events &
 957                     WORKER_CHECK_INACTIVE_VMID) {
 958                         lpfc_check_inactive_vmid(phba);
 959                         phba->pport->work_port_events &=
 960                             ~WORKER_CHECK_INACTIVE_VMID;
 961                 }
 962         }
 963
 964         /* Process SLI4 events */
 965         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
 966                 if (phba->hba_flag & HBA_RRQ_ACTIVE)
 967                         lpfc_handle_rrq_active(phba);
 968                 if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
 969                         lpfc_sli4_els_xri_abort_event_proc(phba);
 970                 if (phba->hba_flag & ASYNC_EVENT)
 971                         lpfc_sli4_async_event_proc(phba);
 972                 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
 973                         spin_lock_irq(&phba->hbalock);
 974                         phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
 975                         spin_unlock_irq(&phba->hbalock);
 976                         lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
 977                 }
 978                 if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
 979                         lpfc_sli4_fcf_redisc_event_proc(phba);
 980         }
 981
 982         vports = lpfc_create_vport_work_array(phba);
 983         if (vports != NULL)
 984                 for (i = 0; i <= phba->max_vports; i++) {
 985                         /*
 986                          * We could have no vports in array if unloading, so if
 987                          * this happens then just use the pport
 988                          */
 989                         if (vports[i] == NULL && i == 0)
 990                                 vport = phba->pport;
 991                         else
 992                                 vport = vports[i];
 993                         if (vport == NULL)
 994                                 break;
 995                         spin_lock_irq(&vport->work_port_lock);
 996                         work_port_events = vport->work_port_events;
 997                         vport->work_port_events &= ~work_port_events;
 998                         spin_unlock_irq(&vport->work_port_lock);
 999                         if (hba_pci_err)
1000                                 continue;
1001                         if (work_port_events & WORKER_DISC_TMO)
1002                                 lpfc_disc_timeout_handler(vport);
1003                         if (work_port_events & WORKER_ELS_TMO)
1004                                 lpfc_els_timeout_handler(vport);
1005                         if (work_port_events & WORKER_HB_TMO)
1006                                 lpfc_hb_timeout_handler(phba);
1007                         if (work_port_events & WORKER_MBOX_TMO)
1008                                 lpfc_mbox_timeout_handler(phba);
1009                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
1010                                 lpfc_unblock_fabric_iocbs(phba);
1011                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
1012                                 lpfc_ramp_down_queue_handler(phba);
1013                         if (work_port_events & WORKER_DELAYED_DISC_TMO)
1014                                 lpfc_delayed_disc_timeout_handler(vport);
1015                 }
1016         lpfc_destroy_vport_work_array(phba, vports);
1017
1018         pring = lpfc_phba_elsring(phba);
1019         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
1020         status >>= (4*LPFC_ELS_RING);
1021         if (pring && (status & HA_RXMASK ||
1022                       pring->flag & LPFC_DEFERRED_RING_EVENT ||
1023                       phba->hba_flag & HBA_SP_QUEUE_EVT)) {
1024                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
1025                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
1026                         /* Preserve legacy behavior. */
1027                         if (!(phba->hba_flag & HBA_SP_QUEUE_EVT))
1028                                 set_bit(LPFC_DATA_READY, &phba->data_flags);
1029                 } else {
1030                         /* Driver could have abort request completed in queue
1031                          * when link goes down.  Allow for this transition.
1032                          */
1033                         if (phba->link_state >= LPFC_LINK_DOWN ||
1034                             phba->link_flag & LS_MDS_LOOPBACK) {
1035                                 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
1036                                 lpfc_sli_handle_slow_ring_event(phba, pring,
1037                                                                 (status &
1038                                                                 HA_RXMASK));
1039                         }
1040                 }
1041                 if (phba->sli_rev == LPFC_SLI_REV4)
1042                         lpfc_drain_txq(phba);
1043                 /*
1044                  * Turn on Ring interrupts
1045                  */
1046                 if (phba->sli_rev <= LPFC_SLI_REV3) {
1047                         spin_lock_irq(&phba->hbalock);
1048                         control = readl(phba->HCregaddr);
1049                         if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
1050                                 lpfc_debugfs_slow_ring_trc(phba,
1051                                         "WRK Enable ring: cntl:x%x hacopy:x%x",
1052                                         control, ha_copy, 0);
1053
1054                                 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
1055                                 writel(control, phba->HCregaddr);
1056                                 readl(phba->HCregaddr); /* flush */
1057                         } else {
1058                                 lpfc_debugfs_slow_ring_trc(phba,
1059                                         "WRK Ring ok:     cntl:x%x hacopy:x%x",
1060                                         control, ha_copy, 0);
1061                         }
1062                         spin_unlock_irq(&phba->hbalock);
1063                 }
1064         }
1065         lpfc_work_list_done(phba);
1066 }
1067
1068 int
1069 lpfc_do_work(void *p)
1070 {
1071         struct lpfc_hba *phba = p;
1072         int rc;
1073
1074         set_user_nice(current, MIN_NICE);
1075         current->flags |= PF_NOFREEZE;
1076         phba->data_flags = 0;
1077
1078         while (!kthread_should_stop()) {
1079                 /* wait and check worker queue activities */
1080                 rc = wait_event_interruptible(phba->work_waitq,
1081                                         (test_and_clear_bit(LPFC_DATA_READY,
1082                                                             &phba->data_flags)
1083                                          || kthread_should_stop()));
1084                 /* Signal wakeup shall terminate the worker thread */
1085                 if (rc) {
1086                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1087                                         "0433 Wakeup on signal: rc=x%x\n", rc);
1088                         break;
1089                 }
1090
1091                 /* Attend pending lpfc data processing */
1092                 lpfc_work_done(phba);
1093         }
1094         phba->worker_thread = NULL;
1095         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1096                         "0432 Worker thread stopped.\n");
1097         return 0;
1098 }
1099
1100 /*
1101  * This is only called to handle FC worker events. Since this a rare
1102  * occurrence, we allocate a struct lpfc_work_evt structure here instead of
1103  * embedding it in the IOCB.
1104  */
1105 int
1106 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
1107                       uint32_t evt)
1108 {
1109         struct lpfc_work_evt  *evtp;
1110         unsigned long flags;
1111
1112         /*
1113          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
1114          * be queued to worker thread for processing
1115          */
1116         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
1117         if (!evtp)
1118                 return 0;
1119
1120         evtp->evt_arg1  = arg1;
1121         evtp->evt_arg2  = arg2;
1122         evtp->evt       = evt;
1123
1124         spin_lock_irqsave(&phba->hbalock, flags);
1125         list_add_tail(&evtp->evt_listp, &phba->work_list);
1126         spin_unlock_irqrestore(&phba->hbalock, flags);
1127
1128         lpfc_worker_wake_up(phba);
1129
1130         return 1;
1131 }
1132
1133 void
1134 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
1135 {
1136         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1137         struct lpfc_hba  *phba = vport->phba;
1138         struct lpfc_nodelist *ndlp, *next_ndlp;
1139
1140         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
1141                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
1142                     ((vport->port_type == LPFC_NPIV_PORT) &&
1143                      ((ndlp->nlp_DID == NameServer_DID) ||
1144                       (ndlp->nlp_DID == FDMI_DID) ||
1145                       (ndlp->nlp_DID == Fabric_Cntl_DID))))
1146                         lpfc_unreg_rpi(vport, ndlp);
1147
1148                 /* Leave Fabric nodes alone on link down */
1149                 if ((phba->sli_rev < LPFC_SLI_REV4) &&
1150                     (!remove && ndlp->nlp_type & NLP_FABRIC))
1151                         continue;
1152
1153                 /* Notify transport of connectivity loss to trigger cleanup. */
1154                 if (phba->nvmet_support &&
1155                     ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
1156                         lpfc_nvmet_invalidate_host(phba, ndlp);
1157
1158                 lpfc_disc_state_machine(vport, ndlp, NULL,
1159                                         remove
1160                                         ? NLP_EVT_DEVICE_RM
1161                                         : NLP_EVT_DEVICE_RECOVERY);
1162         }
1163         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
1164                 if (phba->sli_rev == LPFC_SLI_REV4)
1165                         lpfc_sli4_unreg_all_rpis(vport);
1166                 lpfc_mbx_unreg_vpi(vport);
1167                 spin_lock_irq(shost->host_lock);
1168                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
1169                 spin_unlock_irq(shost->host_lock);
1170         }
1171 }
1172
1173 void
1174 lpfc_port_link_failure(struct lpfc_vport *vport)
1175 {
1176         lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
1177
1178         /* Cleanup any outstanding received buffers */
1179         lpfc_cleanup_rcv_buffers(vport);
1180
1181         /* Cleanup any outstanding RSCN activity */
1182         lpfc_els_flush_rscn(vport);
1183
1184         /* Cleanup any outstanding ELS commands */
1185         lpfc_els_flush_cmd(vport);
1186
1187         lpfc_cleanup_rpis(vport, 0);
1188
1189         /* Turn off discovery timer if its running */
1190         lpfc_can_disctmo(vport);
1191 }
1192
1193 void
1194 lpfc_linkdown_port(struct lpfc_vport *vport)
1195 {
1196         struct lpfc_hba *phba = vport->phba;
1197         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1198
1199         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1200                 fc_host_post_event(shost, fc_get_event_number(),
1201                                    FCH_EVT_LINKDOWN, 0);
1202
1203         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1204                 "Link Down:       state:x%x rtry:x%x flg:x%x",
1205                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1206
1207         lpfc_port_link_failure(vport);
1208
1209         /* Stop delayed Nport discovery */
1210         spin_lock_irq(shost->host_lock);
1211         vport->fc_flag &= ~FC_DISC_DELAYED;
1212         spin_unlock_irq(shost->host_lock);
1213         del_timer_sync(&vport->delayed_disc_tmo);
1214
1215         if (phba->sli_rev == LPFC_SLI_REV4 &&
1216             vport->port_type == LPFC_PHYSICAL_PORT &&
1217             phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_CONFIG) {
1218                 /* Assume success on link up */
1219                 phba->sli4_hba.fawwpn_flag |= LPFC_FAWWPN_FABRIC;
1220         }
1221 }
1222
1223 int
1224 lpfc_linkdown(struct lpfc_hba *phba)
1225 {
1226         struct lpfc_vport *vport = phba->pport;
1227         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1228         struct lpfc_vport **vports;
1229         LPFC_MBOXQ_t          *mb;
1230         int i;
1231         int offline;
1232
1233         if (phba->link_state == LPFC_LINK_DOWN)
1234                 return 0;
1235
1236         /* Block all SCSI stack I/Os */
1237         lpfc_scsi_dev_block(phba);
1238         offline = pci_channel_offline(phba->pcidev);
1239
1240         phba->defer_flogi_acc_flag = false;
1241
1242         /* Clear external loopback plug detected flag */
1243         phba->link_flag &= ~LS_EXTERNAL_LOOPBACK;
1244
1245         spin_lock_irq(&phba->hbalock);
1246         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
1247         spin_unlock_irq(&phba->hbalock);
1248         if (phba->link_state > LPFC_LINK_DOWN) {
1249                 phba->link_state = LPFC_LINK_DOWN;
1250                 if (phba->sli4_hba.conf_trunk) {
1251                         phba->trunk_link.link0.state = 0;
1252                         phba->trunk_link.link1.state = 0;
1253                         phba->trunk_link.link2.state = 0;
1254                         phba->trunk_link.link3.state = 0;
1255                         phba->trunk_link.phy_lnk_speed =
1256                                                 LPFC_LINK_SPEED_UNKNOWN;
1257                         phba->sli4_hba.link_state.logical_speed =
1258                                                 LPFC_LINK_SPEED_UNKNOWN;
1259                 }
1260                 spin_lock_irq(shost->host_lock);
1261                 phba->pport->fc_flag &= ~FC_LBIT;
1262                 spin_unlock_irq(shost->host_lock);
1263         }
1264         vports = lpfc_create_vport_work_array(phba);
1265         if (vports != NULL) {
1266                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
1267                         /* Issue a LINK DOWN event to all nodes */
1268                         lpfc_linkdown_port(vports[i]);
1269
1270                         vports[i]->fc_myDID = 0;
1271
1272                         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
1273                             (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1274                                 if (phba->nvmet_support)
1275                                         lpfc_nvmet_update_targetport(phba);
1276                                 else
1277                                         lpfc_nvme_update_localport(vports[i]);
1278                         }
1279                 }
1280         }
1281         lpfc_destroy_vport_work_array(phba, vports);
1282
1283         /* Clean up any SLI3 firmware default rpi's */
1284         if (phba->sli_rev > LPFC_SLI_REV3 || offline)
1285                 goto skip_unreg_did;
1286
1287         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1288         if (mb) {
1289                 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb);
1290                 mb->vport = vport;
1291                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1292                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
1293                     == MBX_NOT_FINISHED) {
1294                         mempool_free(mb, phba->mbox_mem_pool);
1295                 }
1296         }
1297
1298  skip_unreg_did:
1299         /* Setup myDID for link up if we are in pt2pt mode */
1300         if (phba->pport->fc_flag & FC_PT2PT) {
1301                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1302                 if (mb) {
1303                         lpfc_config_link(phba, mb);
1304                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1305                         mb->vport = vport;
1306                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
1307                             == MBX_NOT_FINISHED) {
1308                                 mempool_free(mb, phba->mbox_mem_pool);
1309                         }
1310                 }
1311                 spin_lock_irq(shost->host_lock);
1312                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
1313                 phba->pport->rcv_flogi_cnt = 0;
1314                 spin_unlock_irq(shost->host_lock);
1315         }
1316         return 0;
1317 }
1318
1319 static void
1320 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
1321 {
1322         struct lpfc_nodelist *ndlp;
1323
1324         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
1325                 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
1326
1327                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
1328                         continue;
1329                 if (ndlp->nlp_type & NLP_FABRIC) {
1330                         /* On Linkup its safe to clean up the ndlp
1331                          * from Fabric connections.
1332                          */
1333                         if (ndlp->nlp_DID != Fabric_DID)
1334                                 lpfc_unreg_rpi(vport, ndlp);
1335                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1336                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
1337                         /* Fail outstanding IO now since device is
1338                          * marked for PLOGI.
1339                          */
1340                         lpfc_unreg_rpi(vport, ndlp);
1341                 }
1342         }
1343 }
1344
1345 static void
1346 lpfc_linkup_port(struct lpfc_vport *vport)
1347 {
1348         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1349         struct lpfc_hba  *phba = vport->phba;
1350
1351         if ((vport->load_flag & FC_UNLOADING) != 0)
1352                 return;
1353
1354         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1355                 "Link Up:         top:x%x speed:x%x flg:x%x",
1356                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
1357
1358         /* If NPIV is not enabled, only bring the physical port up */
1359         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
1360                 (vport != phba->pport))
1361                 return;
1362
1363         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1364                 fc_host_post_event(shost, fc_get_event_number(),
1365                                    FCH_EVT_LINKUP, 0);
1366
1367         spin_lock_irq(shost->host_lock);
1368         if (phba->defer_flogi_acc_flag)
1369                 vport->fc_flag &= ~(FC_ABORT_DISCOVERY | FC_RSCN_MODE |
1370                                     FC_NLP_MORE | FC_RSCN_DISCOVERY);
1371         else
1372                 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI |
1373                                     FC_ABORT_DISCOVERY | FC_RSCN_MODE |
1374                                     FC_NLP_MORE | FC_RSCN_DISCOVERY);
1375         vport->fc_flag |= FC_NDISC_ACTIVE;
1376         vport->fc_ns_retry = 0;
1377         spin_unlock_irq(shost->host_lock);
1378         lpfc_setup_fdmi_mask(vport);
1379
1380         lpfc_linkup_cleanup_nodes(vport);
1381 }
1382
1383 static int
1384 lpfc_linkup(struct lpfc_hba *phba)
1385 {
1386         struct lpfc_vport **vports;
1387         int i;
1388         struct Scsi_Host  *shost = lpfc_shost_from_vport(phba->pport);
1389
1390         phba->link_state = LPFC_LINK_UP;
1391
1392         /* Unblock fabric iocbs if they are blocked */
1393         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
1394         del_timer_sync(&phba->fabric_block_timer);
1395
1396         vports = lpfc_create_vport_work_array(phba);
1397         if (vports != NULL)
1398                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
1399                         lpfc_linkup_port(vports[i]);
1400         lpfc_destroy_vport_work_array(phba, vports);
1401
1402         /* Clear the pport flogi counter in case the link down was
1403          * absorbed without an ACQE. No lock here - in worker thread
1404          * and discovery is synchronized.
1405          */
1406         spin_lock_irq(shost->host_lock);
1407         phba->pport->rcv_flogi_cnt = 0;
1408         spin_unlock_irq(shost->host_lock);
1409
1410         /* reinitialize initial HBA flag */
1411         phba->hba_flag &= ~(HBA_FLOGI_ISSUED | HBA_RHBA_CMPL);
1412
1413         return 0;
1414 }
1415
1416 /*
1417  * This routine handles processing a CLEAR_LA mailbox
1418  * command upon completion. It is setup in the LPFC_MBOXQ
1419  * as the completion routine when the command is
1420  * handed off to the SLI layer. SLI3 only.
1421  */
1422 static void
1423 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1424 {
1425         struct lpfc_vport *vport = pmb->vport;
1426         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1427         struct lpfc_sli   *psli = &phba->sli;
1428         MAILBOX_t *mb = &pmb->u.mb;
1429         uint32_t control;
1430
1431         /* Since we don't do discovery right now, turn these off here */
1432         psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1433         psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1434
1435         /* Check for error */
1436         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
1437                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
1438                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1439                                  "0320 CLEAR_LA mbxStatus error x%x hba "
1440                                  "state x%x\n",
1441                                  mb->mbxStatus, vport->port_state);
1442                 phba->link_state = LPFC_HBA_ERROR;
1443                 goto out;
1444         }
1445
1446         if (vport->port_type == LPFC_PHYSICAL_PORT)
1447                 phba->link_state = LPFC_HBA_READY;
1448
1449         spin_lock_irq(&phba->hbalock);
1450         psli->sli_flag |= LPFC_PROCESS_LA;
1451         control = readl(phba->HCregaddr);
1452         control |= HC_LAINT_ENA;
1453         writel(control, phba->HCregaddr);
1454         readl(phba->HCregaddr); /* flush */
1455         spin_unlock_irq(&phba->hbalock);
1456         mempool_free(pmb, phba->mbox_mem_pool);
1457         return;
1458
1459 out:
1460         /* Device Discovery completes */
1461         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1462                          "0225 Device Discovery completes\n");
1463         mempool_free(pmb, phba->mbox_mem_pool);
1464
1465         spin_lock_irq(shost->host_lock);
1466         vport->fc_flag &= ~FC_ABORT_DISCOVERY;
1467         spin_unlock_irq(shost->host_lock);
1468
1469         lpfc_can_disctmo(vport);
1470
1471         /* turn on Link Attention interrupts */
1472
1473         spin_lock_irq(&phba->hbalock);
1474         psli->sli_flag |= LPFC_PROCESS_LA;
1475         control = readl(phba->HCregaddr);
1476         control |= HC_LAINT_ENA;
1477         writel(control, phba->HCregaddr);
1478         readl(phba->HCregaddr); /* flush */
1479         spin_unlock_irq(&phba->hbalock);
1480
1481         return;
1482 }
1483
1484 void
1485 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1486 {
1487         struct lpfc_vport *vport = pmb->vport;
1488         LPFC_MBOXQ_t *sparam_mb;
1489         u16 status = pmb->u.mb.mbxStatus;
1490         int rc;
1491
1492         mempool_free(pmb, phba->mbox_mem_pool);
1493
1494         if (status)
1495                 goto out;
1496
1497         /* don't perform discovery for SLI4 loopback diagnostic test */
1498         if ((phba->sli_rev == LPFC_SLI_REV4) &&
1499             !(phba->hba_flag & HBA_FCOE_MODE) &&
1500             (phba->link_flag & LS_LOOPBACK_MODE))
1501                 return;
1502
1503         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
1504             vport->fc_flag & FC_PUBLIC_LOOP &&
1505             !(vport->fc_flag & FC_LBIT)) {
1506                         /* Need to wait for FAN - use discovery timer
1507                          * for timeout.  port_state is identically
1508                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
1509                          */
1510                         lpfc_set_disctmo(vport);
1511                         return;
1512         }
1513
1514         /* Start discovery by sending a FLOGI. port_state is identically
1515          * LPFC_FLOGI while waiting for FLOGI cmpl.
1516          */
1517         if (vport->port_state != LPFC_FLOGI) {
1518                 /* Issue MBX_READ_SPARAM to update CSPs before FLOGI if
1519                  * bb-credit recovery is in place.
1520                  */
1521                 if (phba->bbcredit_support && phba->cfg_enable_bbcr &&
1522                     !(phba->link_flag & LS_LOOPBACK_MODE)) {
1523                         sparam_mb = mempool_alloc(phba->mbox_mem_pool,
1524                                                   GFP_KERNEL);
1525                         if (!sparam_mb)
1526                                 goto sparam_out;
1527
1528                         rc = lpfc_read_sparam(phba, sparam_mb, 0);
1529                         if (rc) {
1530                                 mempool_free(sparam_mb, phba->mbox_mem_pool);
1531                                 goto sparam_out;
1532                         }
1533                         sparam_mb->vport = vport;
1534                         sparam_mb->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1535                         rc = lpfc_sli_issue_mbox(phba, sparam_mb, MBX_NOWAIT);
1536                         if (rc == MBX_NOT_FINISHED) {
1537                                 lpfc_mbox_rsrc_cleanup(phba, sparam_mb,
1538                                                        MBOX_THD_UNLOCKED);
1539                                 goto sparam_out;
1540                         }
1541
1542                         phba->hba_flag |= HBA_DEFER_FLOGI;
1543                 }  else {
1544                         lpfc_initial_flogi(vport);
1545                 }
1546         } else {
1547                 if (vport->fc_flag & FC_PT2PT)
1548                         lpfc_disc_start(vport);
1549         }
1550         return;
1551
1552 out:
1553         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1554                          "0306 CONFIG_LINK mbxStatus error x%x HBA state x%x\n",
1555                          status, vport->port_state);
1556
1557 sparam_out:
1558         lpfc_linkdown(phba);
1559
1560         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1561                          "0200 CONFIG_LINK bad hba state x%x\n",
1562                          vport->port_state);
1563
1564         lpfc_issue_clear_la(phba, vport);
1565         return;
1566 }
1567
1568 /**
1569  * lpfc_sli4_clear_fcf_rr_bmask
1570  * @phba: pointer to the struct lpfc_hba for this port.
1571  * This fucnction resets the round robin bit mask and clears the
1572  * fcf priority list. The list deletions are done while holding the
1573  * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared
1574  * from the lpfc_fcf_pri record.
1575  **/
1576 void
1577 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba)
1578 {
1579         struct lpfc_fcf_pri *fcf_pri;
1580         struct lpfc_fcf_pri *next_fcf_pri;
1581         memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask));
1582         spin_lock_irq(&phba->hbalock);
1583         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
1584                                 &phba->fcf.fcf_pri_list, list) {
1585                 list_del_init(&fcf_pri->list);
1586                 fcf_pri->fcf_rec.flag = 0;
1587         }
1588         spin_unlock_irq(&phba->hbalock);
1589 }
1590 static void
1591 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1592 {
1593         struct lpfc_vport *vport = mboxq->vport;
1594
1595         if (mboxq->u.mb.mbxStatus) {
1596                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1597                                  "2017 REG_FCFI mbxStatus error x%x "
1598                                  "HBA state x%x\n", mboxq->u.mb.mbxStatus,
1599                                  vport->port_state);
1600                 goto fail_out;
1601         }
1602
1603         /* Start FCoE discovery by sending a FLOGI. */
1604         phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1605         /* Set the FCFI registered flag */
1606         spin_lock_irq(&phba->hbalock);
1607         phba->fcf.fcf_flag |= FCF_REGISTERED;
1608         spin_unlock_irq(&phba->hbalock);
1609
1610         /* If there is a pending FCoE event, restart FCF table scan. */
1611         if ((!(phba->hba_flag & FCF_RR_INPROG)) &&
1612                 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF))
1613                 goto fail_out;
1614
1615         /* Mark successful completion of FCF table scan */
1616         spin_lock_irq(&phba->hbalock);
1617         phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1618         phba->hba_flag &= ~FCF_TS_INPROG;
1619         if (vport->port_state != LPFC_FLOGI) {
1620                 phba->hba_flag |= FCF_RR_INPROG;
1621                 spin_unlock_irq(&phba->hbalock);
1622                 lpfc_issue_init_vfi(vport);
1623                 goto out;
1624         }
1625         spin_unlock_irq(&phba->hbalock);
1626         goto out;
1627
1628 fail_out:
1629         spin_lock_irq(&phba->hbalock);
1630         phba->hba_flag &= ~FCF_RR_INPROG;
1631         spin_unlock_irq(&phba->hbalock);
1632 out:
1633         mempool_free(mboxq, phba->mbox_mem_pool);
1634 }
1635
1636 /**
1637  * lpfc_fab_name_match - Check if the fcf fabric name match.
1638  * @fab_name: pointer to fabric name.
1639  * @new_fcf_record: pointer to fcf record.
1640  *
1641  * This routine compare the fcf record's fabric name with provided
1642  * fabric name. If the fabric name are identical this function
1643  * returns 1 else return 0.
1644  **/
1645 static uint32_t
1646 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1647 {
1648         if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1649                 return 0;
1650         if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1651                 return 0;
1652         if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1653                 return 0;
1654         if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1655                 return 0;
1656         if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1657                 return 0;
1658         if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1659                 return 0;
1660         if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1661                 return 0;
1662         if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1663                 return 0;
1664         return 1;
1665 }
1666
1667 /**
1668  * lpfc_sw_name_match - Check if the fcf switch name match.
1669  * @sw_name: pointer to switch name.
1670  * @new_fcf_record: pointer to fcf record.
1671  *
1672  * This routine compare the fcf record's switch name with provided
1673  * switch name. If the switch name are identical this function
1674  * returns 1 else return 0.
1675  **/
1676 static uint32_t
1677 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1678 {
1679         if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1680                 return 0;
1681         if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1682                 return 0;
1683         if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1684                 return 0;
1685         if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1686                 return 0;
1687         if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1688                 return 0;
1689         if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1690                 return 0;
1691         if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1692                 return 0;
1693         if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1694                 return 0;
1695         return 1;
1696 }
1697
1698 /**
1699  * lpfc_mac_addr_match - Check if the fcf mac address match.
1700  * @mac_addr: pointer to mac address.
1701  * @new_fcf_record: pointer to fcf record.
1702  *
1703  * This routine compare the fcf record's mac address with HBA's
1704  * FCF mac address. If the mac addresses are identical this function
1705  * returns 1 else return 0.
1706  **/
1707 static uint32_t
1708 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1709 {
1710         if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1711                 return 0;
1712         if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1713                 return 0;
1714         if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1715                 return 0;
1716         if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1717                 return 0;
1718         if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1719                 return 0;
1720         if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1721                 return 0;
1722         return 1;
1723 }
1724
1725 static bool
1726 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1727 {
1728         return (curr_vlan_id == new_vlan_id);
1729 }
1730
1731 /**
1732  * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record.
1733  * @phba: pointer to lpfc hba data structure.
1734  * @fcf_index: Index for the lpfc_fcf_record.
1735  * @new_fcf_record: pointer to hba fcf record.
1736  *
1737  * This routine updates the driver FCF priority record from the new HBA FCF
1738  * record. The hbalock is asserted held in the code path calling this
1739  * routine.
1740  **/
1741 static void
1742 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index,
1743                                  struct fcf_record *new_fcf_record
1744                                  )
1745 {
1746         struct lpfc_fcf_pri *fcf_pri;
1747
1748         fcf_pri = &phba->fcf.fcf_pri[fcf_index];
1749         fcf_pri->fcf_rec.fcf_index = fcf_index;
1750         /* FCF record priority */
1751         fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
1752
1753 }
1754
1755 /**
1756  * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1757  * @fcf_rec: pointer to driver fcf record.
1758  * @new_fcf_record: pointer to fcf record.
1759  *
1760  * This routine copies the FCF information from the FCF
1761  * record to lpfc_hba data structure.
1762  **/
1763 static void
1764 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1765                      struct fcf_record *new_fcf_record)
1766 {
1767         /* Fabric name */
1768         fcf_rec->fabric_name[0] =
1769                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1770         fcf_rec->fabric_name[1] =
1771                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1772         fcf_rec->fabric_name[2] =
1773                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1774         fcf_rec->fabric_name[3] =
1775                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1776         fcf_rec->fabric_name[4] =
1777                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1778         fcf_rec->fabric_name[5] =
1779                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1780         fcf_rec->fabric_name[6] =
1781                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1782         fcf_rec->fabric_name[7] =
1783                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1784         /* Mac address */
1785         fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1786         fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1787         fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1788         fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1789         fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1790         fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1791         /* FCF record index */
1792         fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1793         /* FCF record priority */
1794         fcf_rec->priority = new_fcf_record->fip_priority;
1795         /* Switch name */
1796         fcf_rec->switch_name[0] =
1797                 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1798         fcf_rec->switch_name[1] =
1799                 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1800         fcf_rec->switch_name[2] =
1801                 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1802         fcf_rec->switch_name[3] =
1803                 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1804         fcf_rec->switch_name[4] =
1805                 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1806         fcf_rec->switch_name[5] =
1807                 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1808         fcf_rec->switch_name[6] =
1809                 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1810         fcf_rec->switch_name[7] =
1811                 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1812 }
1813
1814 /**
1815  * __lpfc_update_fcf_record - Update driver fcf record
1816  * @phba: pointer to lpfc hba data structure.
1817  * @fcf_rec: pointer to driver fcf record.
1818  * @new_fcf_record: pointer to hba fcf record.
1819  * @addr_mode: address mode to be set to the driver fcf record.
1820  * @vlan_id: vlan tag to be set to the driver fcf record.
1821  * @flag: flag bits to be set to the driver fcf record.
1822  *
1823  * This routine updates the driver FCF record from the new HBA FCF record
1824  * together with the address mode, vlan_id, and other informations. This
1825  * routine is called with the hbalock held.
1826  **/
1827 static void
1828 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1829                        struct fcf_record *new_fcf_record, uint32_t addr_mode,
1830                        uint16_t vlan_id, uint32_t flag)
1831 {
1832         lockdep_assert_held(&phba->hbalock);
1833
1834         /* Copy the fields from the HBA's FCF record */
1835         lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1836         /* Update other fields of driver FCF record */
1837         fcf_rec->addr_mode = addr_mode;
1838         fcf_rec->vlan_id = vlan_id;
1839         fcf_rec->flag |= (flag | RECORD_VALID);
1840         __lpfc_update_fcf_record_pri(phba,
1841                 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record),
1842                                  new_fcf_record);
1843 }
1844
1845 /**
1846  * lpfc_register_fcf - Register the FCF with hba.
1847  * @phba: pointer to lpfc hba data structure.
1848  *
1849  * This routine issues a register fcfi mailbox command to register
1850  * the fcf with HBA.
1851  **/
1852 static void
1853 lpfc_register_fcf(struct lpfc_hba *phba)
1854 {
1855         LPFC_MBOXQ_t *fcf_mbxq;
1856         int rc;
1857
1858         spin_lock_irq(&phba->hbalock);
1859         /* If the FCF is not available do nothing. */
1860         if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1861                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1862                 spin_unlock_irq(&phba->hbalock);
1863                 return;
1864         }
1865
1866         /* The FCF is already registered, start discovery */
1867         if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1868                 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1869                 phba->hba_flag &= ~FCF_TS_INPROG;
1870                 if (phba->pport->port_state != LPFC_FLOGI &&
1871                     phba->pport->fc_flag & FC_FABRIC) {
1872                         phba->hba_flag |= FCF_RR_INPROG;
1873                         spin_unlock_irq(&phba->hbalock);
1874                         lpfc_initial_flogi(phba->pport);
1875                         return;
1876                 }
1877                 spin_unlock_irq(&phba->hbalock);
1878                 return;
1879         }
1880         spin_unlock_irq(&phba->hbalock);
1881
1882         fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1883         if (!fcf_mbxq) {
1884                 spin_lock_irq(&phba->hbalock);
1885                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1886                 spin_unlock_irq(&phba->hbalock);
1887                 return;
1888         }
1889
1890         lpfc_reg_fcfi(phba, fcf_mbxq);
1891         fcf_mbxq->vport = phba->pport;
1892         fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1893         rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1894         if (rc == MBX_NOT_FINISHED) {
1895                 spin_lock_irq(&phba->hbalock);
1896                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1897                 spin_unlock_irq(&phba->hbalock);
1898                 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1899         }
1900
1901         return;
1902 }
1903
1904 /**
1905  * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1906  * @phba: pointer to lpfc hba data structure.
1907  * @new_fcf_record: pointer to fcf record.
1908  * @boot_flag: Indicates if this record used by boot bios.
1909  * @addr_mode: The address mode to be used by this FCF
1910  * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1911  *
1912  * This routine compare the fcf record with connect list obtained from the
1913  * config region to decide if this FCF can be used for SAN discovery. It returns
1914  * 1 if this record can be used for SAN discovery else return zero. If this FCF
1915  * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1916  * is used by boot bios and addr_mode will indicate the addressing mode to be
1917  * used for this FCF when the function returns.
1918  * If the FCF record need to be used with a particular vlan id, the vlan is
1919  * set in the vlan_id on return of the function. If not VLAN tagging need to
1920  * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
1921  **/
1922 static int
1923 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1924                         struct fcf_record *new_fcf_record,
1925                         uint32_t *boot_flag, uint32_t *addr_mode,
1926                         uint16_t *vlan_id)
1927 {
1928         struct lpfc_fcf_conn_entry *conn_entry;
1929         int i, j, fcf_vlan_id = 0;
1930
1931         /* Find the lowest VLAN id in the FCF record */
1932         for (i = 0; i < 512; i++) {
1933                 if (new_fcf_record->vlan_bitmap[i]) {
1934                         fcf_vlan_id = i * 8;
1935                         j = 0;
1936                         while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1937                                 j++;
1938                                 fcf_vlan_id++;
1939                         }
1940                         break;
1941                 }
1942         }
1943
1944         /* FCF not valid/available or solicitation in progress */
1945         if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1946             !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) ||
1947             bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record))
1948                 return 0;
1949
1950         if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1951                 *boot_flag = 0;
1952                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1953                                 new_fcf_record);
1954                 if (phba->valid_vlan)
1955                         *vlan_id = phba->vlan_id;
1956                 else
1957                         *vlan_id = LPFC_FCOE_NULL_VID;
1958                 return 1;
1959         }
1960
1961         /*
1962          * If there are no FCF connection table entry, driver connect to all
1963          * FCFs.
1964          */
1965         if (list_empty(&phba->fcf_conn_rec_list)) {
1966                 *boot_flag = 0;
1967                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1968                         new_fcf_record);
1969
1970                 /*
1971                  * When there are no FCF connect entries, use driver's default
1972                  * addressing mode - FPMA.
1973                  */
1974                 if (*addr_mode & LPFC_FCF_FPMA)
1975                         *addr_mode = LPFC_FCF_FPMA;
1976
1977                 /* If FCF record report a vlan id use that vlan id */
1978                 if (fcf_vlan_id)
1979                         *vlan_id = fcf_vlan_id;
1980                 else
1981                         *vlan_id = LPFC_FCOE_NULL_VID;
1982                 return 1;
1983         }
1984
1985         list_for_each_entry(conn_entry,
1986                             &phba->fcf_conn_rec_list, list) {
1987                 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1988                         continue;
1989
1990                 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1991                         !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1992                                              new_fcf_record))
1993                         continue;
1994                 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
1995                         !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
1996                                             new_fcf_record))
1997                         continue;
1998                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1999                         /*
2000                          * If the vlan bit map does not have the bit set for the
2001                          * vlan id to be used, then it is not a match.
2002                          */
2003                         if (!(new_fcf_record->vlan_bitmap
2004                                 [conn_entry->conn_rec.vlan_tag / 8] &
2005                                 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
2006                                 continue;
2007                 }
2008
2009                 /*
2010                  * If connection record does not support any addressing mode,
2011                  * skip the FCF record.
2012                  */
2013                 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
2014                         & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
2015                         continue;
2016
2017                 /*
2018                  * Check if the connection record specifies a required
2019                  * addressing mode.
2020                  */
2021                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2022                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
2023
2024                         /*
2025                          * If SPMA required but FCF not support this continue.
2026                          */
2027                         if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2028                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
2029                                         new_fcf_record) & LPFC_FCF_SPMA))
2030                                 continue;
2031
2032                         /*
2033                          * If FPMA required but FCF not support this continue.
2034                          */
2035                         if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2036                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
2037                                 new_fcf_record) & LPFC_FCF_FPMA))
2038                                 continue;
2039                 }
2040
2041                 /*
2042                  * This fcf record matches filtering criteria.
2043                  */
2044                 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
2045                         *boot_flag = 1;
2046                 else
2047                         *boot_flag = 0;
2048
2049                 /*
2050                  * If user did not specify any addressing mode, or if the
2051                  * preferred addressing mode specified by user is not supported
2052                  * by FCF, allow fabric to pick the addressing mode.
2053                  */
2054                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
2055                                 new_fcf_record);
2056                 /*
2057                  * If the user specified a required address mode, assign that
2058                  * address mode
2059                  */
2060                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2061                         (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
2062                         *addr_mode = (conn_entry->conn_rec.flags &
2063                                 FCFCNCT_AM_SPMA) ?
2064                                 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
2065                 /*
2066                  * If the user specified a preferred address mode, use the
2067                  * addr mode only if FCF support the addr_mode.
2068                  */
2069                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2070                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
2071                         (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2072                         (*addr_mode & LPFC_FCF_SPMA))
2073                                 *addr_mode = LPFC_FCF_SPMA;
2074                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2075                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
2076                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2077                         (*addr_mode & LPFC_FCF_FPMA))
2078                                 *addr_mode = LPFC_FCF_FPMA;
2079
2080                 /* If matching connect list has a vlan id, use it */
2081                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
2082                         *vlan_id = conn_entry->conn_rec.vlan_tag;
2083                 /*
2084                  * If no vlan id is specified in connect list, use the vlan id
2085                  * in the FCF record
2086                  */
2087                 else if (fcf_vlan_id)
2088                         *vlan_id = fcf_vlan_id;
2089                 else
2090                         *vlan_id = LPFC_FCOE_NULL_VID;
2091
2092                 return 1;
2093         }
2094
2095         return 0;
2096 }
2097
2098 /**
2099  * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
2100  * @phba: pointer to lpfc hba data structure.
2101  * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
2102  *
2103  * This function check if there is any fcoe event pending while driver
2104  * scan FCF entries. If there is any pending event, it will restart the
2105  * FCF saning and return 1 else return 0.
2106  */
2107 int
2108 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
2109 {
2110         /*
2111          * If the Link is up and no FCoE events while in the
2112          * FCF discovery, no need to restart FCF discovery.
2113          */
2114         if ((phba->link_state  >= LPFC_LINK_UP) &&
2115             (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
2116                 return 0;
2117
2118         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2119                         "2768 Pending link or FCF event during current "
2120                         "handling of the previous event: link_state:x%x, "
2121                         "evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
2122                         phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
2123                         phba->fcoe_eventtag);
2124
2125         spin_lock_irq(&phba->hbalock);
2126         phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
2127         spin_unlock_irq(&phba->hbalock);
2128
2129         if (phba->link_state >= LPFC_LINK_UP) {
2130                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
2131                                 "2780 Restart FCF table scan due to "
2132                                 "pending FCF event:evt_tag_at_scan:x%x, "
2133                                 "evt_tag_current:x%x\n",
2134                                 phba->fcoe_eventtag_at_fcf_scan,
2135                                 phba->fcoe_eventtag);
2136                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
2137         } else {
2138                 /*
2139                  * Do not continue FCF discovery and clear FCF_TS_INPROG
2140                  * flag
2141                  */
2142                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
2143                                 "2833 Stop FCF discovery process due to link "
2144                                 "state change (x%x)\n", phba->link_state);
2145                 spin_lock_irq(&phba->hbalock);
2146                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
2147                 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
2148                 spin_unlock_irq(&phba->hbalock);
2149         }
2150
2151         /* Unregister the currently registered FCF if required */
2152         if (unreg_fcf) {
2153                 spin_lock_irq(&phba->hbalock);
2154                 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
2155                 spin_unlock_irq(&phba->hbalock);
2156                 lpfc_sli4_unregister_fcf(phba);
2157         }
2158         return 1;
2159 }
2160
2161 /**
2162  * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
2163  * @phba: pointer to lpfc hba data structure.
2164  * @fcf_cnt: number of eligible fcf record seen so far.
2165  *
2166  * This function makes an running random selection decision on FCF record to
2167  * use through a sequence of @fcf_cnt eligible FCF records with equal
2168  * probability. To perform integer manunipulation of random numbers with
2169  * size unit32_t, a 16-bit random number returned from get_random_u16() is
2170  * taken as the random random number generated.
2171  *
2172  * Returns true when outcome is for the newly read FCF record should be
2173  * chosen; otherwise, return false when outcome is for keeping the previously
2174  * chosen FCF record.
2175  **/
2176 static bool
2177 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
2178 {
2179         uint32_t rand_num;
2180
2181         /* Get 16-bit uniform random number */
2182         rand_num = get_random_u16();
2183
2184         /* Decision with probability 1/fcf_cnt */
2185         if ((fcf_cnt * rand_num) < 0xFFFF)
2186                 return true;
2187         else
2188                 return false;
2189 }
2190
2191 /**
2192  * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
2193  * @phba: pointer to lpfc hba data structure.
2194  * @mboxq: pointer to mailbox object.
2195  * @next_fcf_index: pointer to holder of next fcf index.
2196  *
2197  * This routine parses the non-embedded fcf mailbox command by performing the
2198  * necessarily error checking, non-embedded read FCF record mailbox command
2199  * SGE parsing, and endianness swapping.
2200  *
2201  * Returns the pointer to the new FCF record in the non-embedded mailbox
2202  * command DMA memory if successfully, other NULL.
2203  */
2204 static struct fcf_record *
2205 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
2206                              uint16_t *next_fcf_index)
2207 {
2208         void *virt_addr;
2209         struct lpfc_mbx_sge sge;
2210         struct lpfc_mbx_read_fcf_tbl *read_fcf;
2211         uint32_t shdr_status, shdr_add_status, if_type;
2212         union lpfc_sli4_cfg_shdr *shdr;
2213         struct fcf_record *new_fcf_record;
2214
2215         /* Get the first SGE entry from the non-embedded DMA memory. This
2216          * routine only uses a single SGE.
2217          */
2218         lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
2219         if (unlikely(!mboxq->sge_array)) {
2220                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2221                                 "2524 Failed to get the non-embedded SGE "
2222                                 "virtual address\n");
2223                 return NULL;
2224         }
2225         virt_addr = mboxq->sge_array->addr[0];
2226
2227         shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
2228         lpfc_sli_pcimem_bcopy(shdr, shdr,
2229                               sizeof(union lpfc_sli4_cfg_shdr));
2230         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
2231         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
2232         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
2233         if (shdr_status || shdr_add_status) {
2234                 if (shdr_status == STATUS_FCF_TABLE_EMPTY ||
2235                                         if_type == LPFC_SLI_INTF_IF_TYPE_2)
2236                         lpfc_printf_log(phba, KERN_ERR,
2237                                         LOG_TRACE_EVENT,
2238                                         "2726 READ_FCF_RECORD Indicates empty "
2239                                         "FCF table.\n");
2240                 else
2241                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2242                                         "2521 READ_FCF_RECORD mailbox failed "
2243                                         "with status x%x add_status x%x, "
2244                                         "mbx\n", shdr_status, shdr_add_status);
2245                 return NULL;
2246         }
2247
2248         /* Interpreting the returned information of the FCF record */
2249         read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
2250         lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
2251                               sizeof(struct lpfc_mbx_read_fcf_tbl));
2252         *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
2253         new_fcf_record = (struct fcf_record *)(virt_addr +
2254                           sizeof(struct lpfc_mbx_read_fcf_tbl));
2255         lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
2256                                 offsetof(struct fcf_record, vlan_bitmap));
2257         new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
2258         new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
2259
2260         return new_fcf_record;
2261 }
2262
2263 /**
2264  * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
2265  * @phba: pointer to lpfc hba data structure.
2266  * @fcf_record: pointer to the fcf record.
2267  * @vlan_id: the lowest vlan identifier associated to this fcf record.
2268  * @next_fcf_index: the index to the next fcf record in hba's fcf table.
2269  *
2270  * This routine logs the detailed FCF record if the LOG_FIP loggin is
2271  * enabled.
2272  **/
2273 static void
2274 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
2275                               struct fcf_record *fcf_record,
2276                               uint16_t vlan_id,
2277                               uint16_t next_fcf_index)
2278 {
2279         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2280                         "2764 READ_FCF_RECORD:\n"
2281                         "\tFCF_Index     : x%x\n"
2282                         "\tFCF_Avail     : x%x\n"
2283                         "\tFCF_Valid     : x%x\n"
2284                         "\tFCF_SOL       : x%x\n"
2285                         "\tFIP_Priority  : x%x\n"
2286                         "\tMAC_Provider  : x%x\n"
2287                         "\tLowest VLANID : x%x\n"
2288                         "\tFCF_MAC Addr  : x%x:%x:%x:%x:%x:%x\n"
2289                         "\tFabric_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
2290                         "\tSwitch_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
2291                         "\tNext_FCF_Index: x%x\n",
2292                         bf_get(lpfc_fcf_record_fcf_index, fcf_record),
2293                         bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
2294                         bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
2295                         bf_get(lpfc_fcf_record_fcf_sol, fcf_record),
2296                         fcf_record->fip_priority,
2297                         bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
2298                         vlan_id,
2299                         bf_get(lpfc_fcf_record_mac_0, fcf_record),
2300                         bf_get(lpfc_fcf_record_mac_1, fcf_record),
2301                         bf_get(lpfc_fcf_record_mac_2, fcf_record),
2302                         bf_get(lpfc_fcf_record_mac_3, fcf_record),
2303                         bf_get(lpfc_fcf_record_mac_4, fcf_record),
2304                         bf_get(lpfc_fcf_record_mac_5, fcf_record),
2305                         bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
2306                         bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
2307                         bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
2308                         bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
2309                         bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
2310                         bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
2311                         bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
2312                         bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
2313                         bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
2314                         bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
2315                         bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
2316                         bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
2317                         bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
2318                         bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
2319                         bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
2320                         bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
2321                         next_fcf_index);
2322 }
2323
2324 /**
2325  * lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
2326  * @phba: pointer to lpfc hba data structure.
2327  * @fcf_rec: pointer to an existing FCF record.
2328  * @new_fcf_record: pointer to a new FCF record.
2329  * @new_vlan_id: vlan id from the new FCF record.
2330  *
2331  * This function performs matching test of a new FCF record against an existing
2332  * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
2333  * will not be used as part of the FCF record matching criteria.
2334  *
2335  * Returns true if all the fields matching, otherwise returns false.
2336  */
2337 static bool
2338 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
2339                            struct lpfc_fcf_rec *fcf_rec,
2340                            struct fcf_record *new_fcf_record,
2341                            uint16_t new_vlan_id)
2342 {
2343         if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
2344                 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
2345                         return false;
2346         if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
2347                 return false;
2348         if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
2349                 return false;
2350         if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
2351                 return false;
2352         if (fcf_rec->priority != new_fcf_record->fip_priority)
2353                 return false;
2354         return true;
2355 }
2356
2357 /**
2358  * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf
2359  * @vport: Pointer to vport object.
2360  * @fcf_index: index to next fcf.
2361  *
2362  * This function processing the roundrobin fcf failover to next fcf index.
2363  * When this function is invoked, there will be a current fcf registered
2364  * for flogi.
2365  * Return: 0 for continue retrying flogi on currently registered fcf;
2366  *         1 for stop flogi on currently registered fcf;
2367  */
2368 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index)
2369 {
2370         struct lpfc_hba *phba = vport->phba;
2371         int rc;
2372
2373         if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
2374                 spin_lock_irq(&phba->hbalock);
2375                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2376                         spin_unlock_irq(&phba->hbalock);
2377                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2378                                         "2872 Devloss tmo with no eligible "
2379                                         "FCF, unregister in-use FCF (x%x) "
2380                                         "and rescan FCF table\n",
2381                                         phba->fcf.current_rec.fcf_indx);
2382                         lpfc_unregister_fcf_rescan(phba);
2383                         goto stop_flogi_current_fcf;
2384                 }
2385                 /* Mark the end to FLOGI roundrobin failover */
2386                 phba->hba_flag &= ~FCF_RR_INPROG;
2387                 /* Allow action to new fcf asynchronous event */
2388                 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
2389                 spin_unlock_irq(&phba->hbalock);
2390                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2391                                 "2865 No FCF available, stop roundrobin FCF "
2392                                 "failover and change port state:x%x/x%x\n",
2393                                 phba->pport->port_state, LPFC_VPORT_UNKNOWN);
2394                 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
2395
2396                 if (!phba->fcf.fcf_redisc_attempted) {
2397                         lpfc_unregister_fcf(phba);
2398
2399                         rc = lpfc_sli4_redisc_fcf_table(phba);
2400                         if (!rc) {
2401                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2402                                                 "3195 Rediscover FCF table\n");
2403                                 phba->fcf.fcf_redisc_attempted = 1;
2404                                 lpfc_sli4_clear_fcf_rr_bmask(phba);
2405                         } else {
2406                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2407                                                 "3196 Rediscover FCF table "
2408                                                 "failed. Status:x%x\n", rc);
2409                         }
2410                 } else {
2411                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2412                                         "3197 Already rediscover FCF table "
2413                                         "attempted. No more retry\n");
2414                 }
2415                 goto stop_flogi_current_fcf;
2416         } else {
2417                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS,
2418                                 "2794 Try FLOGI roundrobin FCF failover to "
2419                                 "(x%x)\n", fcf_index);
2420                 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index);
2421                 if (rc)
2422                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
2423                                         "2761 FLOGI roundrobin FCF failover "
2424                                         "failed (rc:x%x) to read FCF (x%x)\n",
2425                                         rc, phba->fcf.current_rec.fcf_indx);
2426                 else
2427                         goto stop_flogi_current_fcf;
2428         }
2429         return 0;
2430
2431 stop_flogi_current_fcf:
2432         lpfc_can_disctmo(vport);
2433         return 1;
2434 }
2435
2436 /**
2437  * lpfc_sli4_fcf_pri_list_del
2438  * @phba: pointer to lpfc hba data structure.
2439  * @fcf_index: the index of the fcf record to delete
2440  * This routine checks the on list flag of the fcf_index to be deleted.
2441  * If it is one the list then it is removed from the list, and the flag
2442  * is cleared. This routine grab the hbalock before removing the fcf
2443  * record from the list.
2444  **/
2445 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba,
2446                         uint16_t fcf_index)
2447 {
2448         struct lpfc_fcf_pri *new_fcf_pri;
2449
2450         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2451         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2452                 "3058 deleting idx x%x pri x%x flg x%x\n",
2453                 fcf_index, new_fcf_pri->fcf_rec.priority,
2454                  new_fcf_pri->fcf_rec.flag);
2455         spin_lock_irq(&phba->hbalock);
2456         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) {
2457                 if (phba->fcf.current_rec.priority ==
2458                                 new_fcf_pri->fcf_rec.priority)
2459                         phba->fcf.eligible_fcf_cnt--;
2460                 list_del_init(&new_fcf_pri->list);
2461                 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST;
2462         }
2463         spin_unlock_irq(&phba->hbalock);
2464 }
2465
2466 /**
2467  * lpfc_sli4_set_fcf_flogi_fail
2468  * @phba: pointer to lpfc hba data structure.
2469  * @fcf_index: the index of the fcf record to update
2470  * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED
2471  * flag so the round robin selection for the particular priority level
2472  * will try a different fcf record that does not have this bit set.
2473  * If the fcf record is re-read for any reason this flag is cleared brfore
2474  * adding it to the priority list.
2475  **/
2476 void
2477 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index)
2478 {
2479         struct lpfc_fcf_pri *new_fcf_pri;
2480         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2481         spin_lock_irq(&phba->hbalock);
2482         new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED;
2483         spin_unlock_irq(&phba->hbalock);
2484 }
2485
2486 /**
2487  * lpfc_sli4_fcf_pri_list_add
2488  * @phba: pointer to lpfc hba data structure.
2489  * @fcf_index: the index of the fcf record to add
2490  * @new_fcf_record: pointer to a new FCF record.
2491  * This routine checks the priority of the fcf_index to be added.
2492  * If it is a lower priority than the current head of the fcf_pri list
2493  * then it is added to the list in the right order.
2494  * If it is the same priority as the current head of the list then it
2495  * is added to the head of the list and its bit in the rr_bmask is set.
2496  * If the fcf_index to be added is of a higher priority than the current
2497  * head of the list then the rr_bmask is cleared, its bit is set in the
2498  * rr_bmask and it is added to the head of the list.
2499  * returns:
2500  * 0=success 1=failure
2501  **/
2502 static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba,
2503         uint16_t fcf_index,
2504         struct fcf_record *new_fcf_record)
2505 {
2506         uint16_t current_fcf_pri;
2507         uint16_t last_index;
2508         struct lpfc_fcf_pri *fcf_pri;
2509         struct lpfc_fcf_pri *next_fcf_pri;
2510         struct lpfc_fcf_pri *new_fcf_pri;
2511         int ret;
2512
2513         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2514         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2515                 "3059 adding idx x%x pri x%x flg x%x\n",
2516                 fcf_index, new_fcf_record->fip_priority,
2517                  new_fcf_pri->fcf_rec.flag);
2518         spin_lock_irq(&phba->hbalock);
2519         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST)
2520                 list_del_init(&new_fcf_pri->list);
2521         new_fcf_pri->fcf_rec.fcf_index = fcf_index;
2522         new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
2523         if (list_empty(&phba->fcf.fcf_pri_list)) {
2524                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2525                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2526                                 new_fcf_pri->fcf_rec.fcf_index);
2527                 goto out;
2528         }
2529
2530         last_index = find_first_bit(phba->fcf.fcf_rr_bmask,
2531                                 LPFC_SLI4_FCF_TBL_INDX_MAX);
2532         if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
2533                 ret = 0; /* Empty rr list */
2534                 goto out;
2535         }
2536         current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority;
2537         if (new_fcf_pri->fcf_rec.priority <=  current_fcf_pri) {
2538                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2539                 if (new_fcf_pri->fcf_rec.priority <  current_fcf_pri) {
2540                         memset(phba->fcf.fcf_rr_bmask, 0,
2541                                 sizeof(*phba->fcf.fcf_rr_bmask));
2542                         /* fcfs_at_this_priority_level = 1; */
2543                         phba->fcf.eligible_fcf_cnt = 1;
2544                 } else
2545                         /* fcfs_at_this_priority_level++; */
2546                         phba->fcf.eligible_fcf_cnt++;
2547                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2548                                 new_fcf_pri->fcf_rec.fcf_index);
2549                 goto out;
2550         }
2551
2552         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
2553                                 &phba->fcf.fcf_pri_list, list) {
2554                 if (new_fcf_pri->fcf_rec.priority <=
2555                                 fcf_pri->fcf_rec.priority) {
2556                         if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list)
2557                                 list_add(&new_fcf_pri->list,
2558                                                 &phba->fcf.fcf_pri_list);
2559                         else
2560                                 list_add(&new_fcf_pri->list,
2561                                          &((struct lpfc_fcf_pri *)
2562                                         fcf_pri->list.prev)->list);
2563                         ret = 0;
2564                         goto out;
2565                 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list
2566                         || new_fcf_pri->fcf_rec.priority <
2567                                 next_fcf_pri->fcf_rec.priority) {
2568                         list_add(&new_fcf_pri->list, &fcf_pri->list);
2569                         ret = 0;
2570                         goto out;
2571                 }
2572                 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority)
2573                         continue;
2574
2575         }
2576         ret = 1;
2577 out:
2578         /* we use = instead of |= to clear the FLOGI_FAILED flag. */
2579         new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST;
2580         spin_unlock_irq(&phba->hbalock);
2581         return ret;
2582 }
2583
2584 /**
2585  * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
2586  * @phba: pointer to lpfc hba data structure.
2587  * @mboxq: pointer to mailbox object.
2588  *
2589  * This function iterates through all the fcf records available in
2590  * HBA and chooses the optimal FCF record for discovery. After finding
2591  * the FCF for discovery it registers the FCF record and kicks start
2592  * discovery.
2593  * If FCF_IN_USE flag is set in currently used FCF, the routine tries to
2594  * use an FCF record which matches fabric name and mac address of the
2595  * currently used FCF record.
2596  * If the driver supports only one FCF, it will try to use the FCF record
2597  * used by BOOT_BIOS.
2598  */
2599 void
2600 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2601 {
2602         struct fcf_record *new_fcf_record;
2603         uint32_t boot_flag, addr_mode;
2604         uint16_t fcf_index, next_fcf_index;
2605         struct lpfc_fcf_rec *fcf_rec = NULL;
2606         uint16_t vlan_id = LPFC_FCOE_NULL_VID;
2607         bool select_new_fcf;
2608         int rc;
2609
2610         /* If there is pending FCoE event restart FCF table scan */
2611         if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) {
2612                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2613                 return;
2614         }
2615
2616         /* Parse the FCF record from the non-embedded mailbox command */
2617         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2618                                                       &next_fcf_index);
2619         if (!new_fcf_record) {
2620                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2621                                 "2765 Mailbox command READ_FCF_RECORD "
2622                                 "failed to retrieve a FCF record.\n");
2623                 /* Let next new FCF event trigger fast failover */
2624                 spin_lock_irq(&phba->hbalock);
2625                 phba->hba_flag &= ~FCF_TS_INPROG;
2626                 spin_unlock_irq(&phba->hbalock);
2627                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2628                 return;
2629         }
2630
2631         /* Check the FCF record against the connection list */
2632         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2633                                       &addr_mode, &vlan_id);
2634
2635         /* Log the FCF record information if turned on */
2636         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2637                                       next_fcf_index);
2638
2639         /*
2640          * If the fcf record does not match with connect list entries
2641          * read the next entry; otherwise, this is an eligible FCF
2642          * record for roundrobin FCF failover.
2643          */
2644         if (!rc) {
2645                 lpfc_sli4_fcf_pri_list_del(phba,
2646                                         bf_get(lpfc_fcf_record_fcf_index,
2647                                                new_fcf_record));
2648                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2649                                 "2781 FCF (x%x) failed connection "
2650                                 "list check: (x%x/x%x/%x)\n",
2651                                 bf_get(lpfc_fcf_record_fcf_index,
2652                                        new_fcf_record),
2653                                 bf_get(lpfc_fcf_record_fcf_avail,
2654                                        new_fcf_record),
2655                                 bf_get(lpfc_fcf_record_fcf_valid,
2656                                        new_fcf_record),
2657                                 bf_get(lpfc_fcf_record_fcf_sol,
2658                                        new_fcf_record));
2659                 if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
2660                     lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2661                     new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
2662                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) !=
2663                             phba->fcf.current_rec.fcf_indx) {
2664                                 lpfc_printf_log(phba, KERN_ERR,
2665                                                 LOG_TRACE_EVENT,
2666                                         "2862 FCF (x%x) matches property "
2667                                         "of in-use FCF (x%x)\n",
2668                                         bf_get(lpfc_fcf_record_fcf_index,
2669                                                new_fcf_record),
2670                                         phba->fcf.current_rec.fcf_indx);
2671                                 goto read_next_fcf;
2672                         }
2673                         /*
2674                          * In case the current in-use FCF record becomes
2675                          * invalid/unavailable during FCF discovery that
2676                          * was not triggered by fast FCF failover process,
2677                          * treat it as fast FCF failover.
2678                          */
2679                         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
2680                             !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2681                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2682                                                 "2835 Invalid in-use FCF "
2683                                                 "(x%x), enter FCF failover "
2684                                                 "table scan.\n",
2685                                                 phba->fcf.current_rec.fcf_indx);
2686                                 spin_lock_irq(&phba->hbalock);
2687                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2688                                 spin_unlock_irq(&phba->hbalock);
2689                                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2690                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2691                                                 LPFC_FCOE_FCF_GET_FIRST);
2692                                 return;
2693                         }
2694                 }
2695                 goto read_next_fcf;
2696         } else {
2697                 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2698                 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index,
2699                                                         new_fcf_record);
2700                 if (rc)
2701                         goto read_next_fcf;
2702         }
2703
2704         /*
2705          * If this is not the first FCF discovery of the HBA, use last
2706          * FCF record for the discovery. The condition that a rescan
2707          * matches the in-use FCF record: fabric name, switch name, mac
2708          * address, and vlan_id.
2709          */
2710         spin_lock_irq(&phba->hbalock);
2711         if (phba->fcf.fcf_flag & FCF_IN_USE) {
2712                 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2713                         lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2714                     new_fcf_record, vlan_id)) {
2715                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) ==
2716                             phba->fcf.current_rec.fcf_indx) {
2717                                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2718                                 if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
2719                                         /* Stop FCF redisc wait timer */
2720                                         __lpfc_sli4_stop_fcf_redisc_wait_timer(
2721                                                                         phba);
2722                                 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2723                                         /* Fast failover, mark completed */
2724                                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2725                                 spin_unlock_irq(&phba->hbalock);
2726                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2727                                                 "2836 New FCF matches in-use "
2728                                                 "FCF (x%x), port_state:x%x, "
2729                                                 "fc_flag:x%x\n",
2730                                                 phba->fcf.current_rec.fcf_indx,
2731                                                 phba->pport->port_state,
2732                                                 phba->pport->fc_flag);
2733                                 goto out;
2734                         } else
2735                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2736                                         "2863 New FCF (x%x) matches "
2737                                         "property of in-use FCF (x%x)\n",
2738                                         bf_get(lpfc_fcf_record_fcf_index,
2739                                                new_fcf_record),
2740                                         phba->fcf.current_rec.fcf_indx);
2741                 }
2742                 /*
2743                  * Read next FCF record from HBA searching for the matching
2744                  * with in-use record only if not during the fast failover
2745                  * period. In case of fast failover period, it shall try to
2746                  * determine whether the FCF record just read should be the
2747                  * next candidate.
2748                  */
2749                 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2750                         spin_unlock_irq(&phba->hbalock);
2751                         goto read_next_fcf;
2752                 }
2753         }
2754         /*
2755          * Update on failover FCF record only if it's in FCF fast-failover
2756          * period; otherwise, update on current FCF record.
2757          */
2758         if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2759                 fcf_rec = &phba->fcf.failover_rec;
2760         else
2761                 fcf_rec = &phba->fcf.current_rec;
2762
2763         if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
2764                 /*
2765                  * If the driver FCF record does not have boot flag
2766                  * set and new hba fcf record has boot flag set, use
2767                  * the new hba fcf record.
2768                  */
2769                 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
2770                         /* Choose this FCF record */
2771                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2772                                         "2837 Update current FCF record "
2773                                         "(x%x) with new FCF record (x%x)\n",
2774                                         fcf_rec->fcf_indx,
2775                                         bf_get(lpfc_fcf_record_fcf_index,
2776                                         new_fcf_record));
2777                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2778                                         addr_mode, vlan_id, BOOT_ENABLE);
2779                         spin_unlock_irq(&phba->hbalock);
2780                         goto read_next_fcf;
2781                 }
2782                 /*
2783                  * If the driver FCF record has boot flag set and the
2784                  * new hba FCF record does not have boot flag, read
2785                  * the next FCF record.
2786                  */
2787                 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
2788                         spin_unlock_irq(&phba->hbalock);
2789                         goto read_next_fcf;
2790                 }
2791                 /*
2792                  * If the new hba FCF record has lower priority value
2793                  * than the driver FCF record, use the new record.
2794                  */
2795                 if (new_fcf_record->fip_priority < fcf_rec->priority) {
2796                         /* Choose the new FCF record with lower priority */
2797                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2798                                         "2838 Update current FCF record "
2799                                         "(x%x) with new FCF record (x%x)\n",
2800                                         fcf_rec->fcf_indx,
2801                                         bf_get(lpfc_fcf_record_fcf_index,
2802                                                new_fcf_record));
2803                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2804                                         addr_mode, vlan_id, 0);
2805                         /* Reset running random FCF selection count */
2806                         phba->fcf.eligible_fcf_cnt = 1;
2807                 } else if (new_fcf_record->fip_priority == fcf_rec->priority) {
2808                         /* Update running random FCF selection count */
2809                         phba->fcf.eligible_fcf_cnt++;
2810                         select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
2811                                                 phba->fcf.eligible_fcf_cnt);
2812                         if (select_new_fcf) {
2813                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2814                                         "2839 Update current FCF record "
2815                                         "(x%x) with new FCF record (x%x)\n",
2816                                         fcf_rec->fcf_indx,
2817                                         bf_get(lpfc_fcf_record_fcf_index,
2818                                                new_fcf_record));
2819                                 /* Choose the new FCF by random selection */
2820                                 __lpfc_update_fcf_record(phba, fcf_rec,
2821                                                          new_fcf_record,
2822                                                          addr_mode, vlan_id, 0);
2823                         }
2824                 }
2825                 spin_unlock_irq(&phba->hbalock);
2826                 goto read_next_fcf;
2827         }
2828         /*
2829          * This is the first suitable FCF record, choose this record for
2830          * initial best-fit FCF.
2831          */
2832         if (fcf_rec) {
2833                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2834                                 "2840 Update initial FCF candidate "
2835                                 "with FCF (x%x)\n",
2836                                 bf_get(lpfc_fcf_record_fcf_index,
2837                                        new_fcf_record));
2838                 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2839                                          addr_mode, vlan_id, (boot_flag ?
2840                                          BOOT_ENABLE : 0));
2841                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2842                 /* Setup initial running random FCF selection count */
2843                 phba->fcf.eligible_fcf_cnt = 1;
2844         }
2845         spin_unlock_irq(&phba->hbalock);
2846         goto read_next_fcf;
2847
2848 read_next_fcf:
2849         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2850         if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
2851                 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
2852                         /*
2853                          * Case of FCF fast failover scan
2854                          */
2855
2856                         /*
2857                          * It has not found any suitable FCF record, cancel
2858                          * FCF scan inprogress, and do nothing
2859                          */
2860                         if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
2861                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2862                                                "2782 No suitable FCF found: "
2863                                                "(x%x/x%x)\n",
2864                                                phba->fcoe_eventtag_at_fcf_scan,
2865                                                bf_get(lpfc_fcf_record_fcf_index,
2866                                                       new_fcf_record));
2867                                 spin_lock_irq(&phba->hbalock);
2868                                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2869                                         phba->hba_flag &= ~FCF_TS_INPROG;
2870                                         spin_unlock_irq(&phba->hbalock);
2871                                         /* Unregister in-use FCF and rescan */
2872                                         lpfc_printf_log(phba, KERN_INFO,
2873                                                         LOG_FIP,
2874                                                         "2864 On devloss tmo "
2875                                                         "unreg in-use FCF and "
2876                                                         "rescan FCF table\n");
2877                                         lpfc_unregister_fcf_rescan(phba);
2878                                         return;
2879                                 }
2880                                 /*
2881                                  * Let next new FCF event trigger fast failover
2882                                  */
2883                                 phba->hba_flag &= ~FCF_TS_INPROG;
2884                                 spin_unlock_irq(&phba->hbalock);
2885                                 return;
2886                         }
2887                         /*
2888                          * It has found a suitable FCF record that is not
2889                          * the same as in-use FCF record, unregister the
2890                          * in-use FCF record, replace the in-use FCF record
2891                          * with the new FCF record, mark FCF fast failover
2892                          * completed, and then start register the new FCF
2893                          * record.
2894                          */
2895
2896                         /* Unregister the current in-use FCF record */
2897                         lpfc_unregister_fcf(phba);
2898
2899                         /* Replace in-use record with the new record */
2900                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2901                                         "2842 Replace in-use FCF (x%x) "
2902                                         "with failover FCF (x%x)\n",
2903                                         phba->fcf.current_rec.fcf_indx,
2904                                         phba->fcf.failover_rec.fcf_indx);
2905                         memcpy(&phba->fcf.current_rec,
2906                                &phba->fcf.failover_rec,
2907                                sizeof(struct lpfc_fcf_rec));
2908                         /*
2909                          * Mark the fast FCF failover rediscovery completed
2910                          * and the start of the first round of the roundrobin
2911                          * FCF failover.
2912                          */
2913                         spin_lock_irq(&phba->hbalock);
2914                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2915                         spin_unlock_irq(&phba->hbalock);
2916                         /* Register to the new FCF record */
2917                         lpfc_register_fcf(phba);
2918                 } else {
2919                         /*
2920                          * In case of transaction period to fast FCF failover,
2921                          * do nothing when search to the end of the FCF table.
2922                          */
2923                         if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
2924                             (phba->fcf.fcf_flag & FCF_REDISC_PEND))
2925                                 return;
2926
2927                         if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2928                                 phba->fcf.fcf_flag & FCF_IN_USE) {
2929                                 /*
2930                                  * In case the current in-use FCF record no
2931                                  * longer existed during FCF discovery that
2932                                  * was not triggered by fast FCF failover
2933                                  * process, treat it as fast FCF failover.
2934                                  */
2935                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2936                                                 "2841 In-use FCF record (x%x) "
2937                                                 "not reported, entering fast "
2938                                                 "FCF failover mode scanning.\n",
2939                                                 phba->fcf.current_rec.fcf_indx);
2940                                 spin_lock_irq(&phba->hbalock);
2941                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2942                                 spin_unlock_irq(&phba->hbalock);
2943                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2944                                                 LPFC_FCOE_FCF_GET_FIRST);
2945                                 return;
2946                         }
2947                         /* Register to the new FCF record */
2948                         lpfc_register_fcf(phba);
2949                 }
2950         } else
2951                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
2952         return;
2953
2954 out:
2955         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2956         lpfc_register_fcf(phba);
2957
2958         return;
2959 }
2960
2961 /**
2962  * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler
2963  * @phba: pointer to lpfc hba data structure.
2964  * @mboxq: pointer to mailbox object.
2965  *
2966  * This is the callback function for FLOGI failure roundrobin FCF failover
2967  * read FCF record mailbox command from the eligible FCF record bmask for
2968  * performing the failover. If the FCF read back is not valid/available, it
2969  * fails through to retrying FLOGI to the currently registered FCF again.
2970  * Otherwise, if the FCF read back is valid and available, it will set the
2971  * newly read FCF record to the failover FCF record, unregister currently
2972  * registered FCF record, copy the failover FCF record to the current
2973  * FCF record, and then register the current FCF record before proceeding
2974  * to trying FLOGI on the new failover FCF.
2975  */
2976 void
2977 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2978 {
2979         struct fcf_record *new_fcf_record;
2980         uint32_t boot_flag, addr_mode;
2981         uint16_t next_fcf_index, fcf_index;
2982         uint16_t current_fcf_index;
2983         uint16_t vlan_id = LPFC_FCOE_NULL_VID;
2984         int rc;
2985
2986         /* If link state is not up, stop the roundrobin failover process */
2987         if (phba->link_state < LPFC_LINK_UP) {
2988                 spin_lock_irq(&phba->hbalock);
2989                 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
2990                 phba->hba_flag &= ~FCF_RR_INPROG;
2991                 spin_unlock_irq(&phba->hbalock);
2992                 goto out;
2993         }
2994
2995         /* Parse the FCF record from the non-embedded mailbox command */
2996         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2997                                                       &next_fcf_index);
2998         if (!new_fcf_record) {
2999                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
3000                                 "2766 Mailbox command READ_FCF_RECORD "
3001                                 "failed to retrieve a FCF record. "
3002                                 "hba_flg x%x fcf_flg x%x\n", phba->hba_flag,
3003                                 phba->fcf.fcf_flag);
3004                 lpfc_unregister_fcf_rescan(phba);
3005                 goto out;
3006         }
3007
3008         /* Get the needed parameters from FCF record */
3009         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
3010                                       &addr_mode, &vlan_id);
3011
3012         /* Log the FCF record information if turned on */
3013         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
3014                                       next_fcf_index);
3015
3016         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
3017         if (!rc) {
3018                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3019                                 "2848 Remove ineligible FCF (x%x) from "
3020                                 "from roundrobin bmask\n", fcf_index);
3021                 /* Clear roundrobin bmask bit for ineligible FCF */
3022                 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index);
3023                 /* Perform next round of roundrobin FCF failover */
3024                 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
3025                 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index);
3026                 if (rc)
3027                         goto out;
3028                 goto error_out;
3029         }
3030
3031         if (fcf_index == phba->fcf.current_rec.fcf_indx) {
3032                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3033                                 "2760 Perform FLOGI roundrobin FCF failover: "
3034                                 "FCF (x%x) back to FCF (x%x)\n",
3035                                 phba->fcf.current_rec.fcf_indx, fcf_index);
3036                 /* Wait 500 ms before retrying FLOGI to current FCF */
3037                 msleep(500);
3038                 lpfc_issue_init_vfi(phba->pport);
3039                 goto out;
3040         }
3041
3042         /* Upload new FCF record to the failover FCF record */
3043         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3044                         "2834 Update current FCF (x%x) with new FCF (x%x)\n",
3045                         phba->fcf.failover_rec.fcf_indx, fcf_index);
3046         spin_lock_irq(&phba->hbalock);
3047         __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
3048                                  new_fcf_record, addr_mode, vlan_id,
3049                                  (boot_flag ? BOOT_ENABLE : 0));
3050         spin_unlock_irq(&phba->hbalock);
3051
3052         current_fcf_index = phba->fcf.current_rec.fcf_indx;
3053
3054         /* Unregister the current in-use FCF record */
3055         lpfc_unregister_fcf(phba);
3056
3057         /* Replace in-use record with the new record */
3058         memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
3059                sizeof(struct lpfc_fcf_rec));
3060
3061         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3062                         "2783 Perform FLOGI roundrobin FCF failover: FCF "
3063                         "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index);
3064
3065 error_out:
3066         lpfc_register_fcf(phba);
3067 out:
3068         lpfc_sli4_mbox_cmd_free(phba, mboxq);
3069 }
3070
3071 /**
3072  * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
3073  * @phba: pointer to lpfc hba data structure.
3074  * @mboxq: pointer to mailbox object.
3075  *
3076  * This is the callback function of read FCF record mailbox command for
3077  * updating the eligible FCF bmask for FLOGI failure roundrobin FCF
3078  * failover when a new FCF event happened. If the FCF read back is
3079  * valid/available and it passes the connection list check, it updates
3080  * the bmask for the eligible FCF record for roundrobin failover.
3081  */
3082 void
3083 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3084 {
3085         struct fcf_record *new_fcf_record;
3086         uint32_t boot_flag, addr_mode;
3087         uint16_t fcf_index, next_fcf_index;
3088         uint16_t vlan_id =  LPFC_FCOE_NULL_VID;
3089         int rc;
3090
3091         /* If link state is not up, no need to proceed */
3092         if (phba->link_state < LPFC_LINK_UP)
3093                 goto out;
3094
3095         /* If FCF discovery period is over, no need to proceed */
3096         if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
3097                 goto out;
3098
3099         /* Parse the FCF record from the non-embedded mailbox command */
3100         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
3101                                                       &next_fcf_index);
3102         if (!new_fcf_record) {
3103                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3104                                 "2767 Mailbox command READ_FCF_RECORD "
3105                                 "failed to retrieve a FCF record.\n");
3106                 goto out;
3107         }
3108
3109         /* Check the connection list for eligibility */
3110         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
3111                                       &addr_mode, &vlan_id);
3112
3113         /* Log the FCF record information if turned on */
3114         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
3115                                       next_fcf_index);
3116
3117         if (!rc)
3118                 goto out;
3119
3120         /* Update the eligible FCF record index bmask */
3121         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
3122
3123         rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record);
3124
3125 out:
3126         lpfc_sli4_mbox_cmd_free(phba, mboxq);
3127 }
3128
3129 /**
3130  * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command.
3131  * @phba: pointer to lpfc hba data structure.
3132  * @mboxq: pointer to mailbox data structure.
3133  *
3134  * This function handles completion of init vfi mailbox command.
3135  */
3136 static void
3137 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3138 {
3139         struct lpfc_vport *vport = mboxq->vport;
3140
3141         /*
3142          * VFI not supported on interface type 0, just do the flogi
3143          * Also continue if the VFI is in use - just use the same one.
3144          */
3145         if (mboxq->u.mb.mbxStatus &&
3146             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
3147                         LPFC_SLI_INTF_IF_TYPE_0) &&
3148             mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
3149                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3150                                  "2891 Init VFI mailbox failed 0x%x\n",
3151                                  mboxq->u.mb.mbxStatus);
3152                 mempool_free(mboxq, phba->mbox_mem_pool);
3153                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3154                 return;
3155         }
3156
3157         lpfc_initial_flogi(vport);
3158         mempool_free(mboxq, phba->mbox_mem_pool);
3159         return;
3160 }
3161
3162 /**
3163  * lpfc_issue_init_vfi - Issue init_vfi mailbox command.
3164  * @vport: pointer to lpfc_vport data structure.
3165  *
3166  * This function issue a init_vfi mailbox command to initialize the VFI and
3167  * VPI for the physical port.
3168  */
3169 void
3170 lpfc_issue_init_vfi(struct lpfc_vport *vport)
3171 {
3172         LPFC_MBOXQ_t *mboxq;
3173         int rc;
3174         struct lpfc_hba *phba = vport->phba;
3175
3176         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3177         if (!mboxq) {
3178                 lpfc_printf_vlog(vport, KERN_ERR,
3179                         LOG_TRACE_EVENT, "2892 Failed to allocate "
3180                         "init_vfi mailbox\n");
3181                 return;
3182         }
3183         lpfc_init_vfi(mboxq, vport);
3184         mboxq->mbox_cmpl = lpfc_init_vfi_cmpl;
3185         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
3186         if (rc == MBX_NOT_FINISHED) {
3187                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3188                                  "2893 Failed to issue init_vfi mailbox\n");
3189                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
3190         }
3191 }
3192
3193 /**
3194  * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
3195  * @phba: pointer to lpfc hba data structure.
3196  * @mboxq: pointer to mailbox data structure.
3197  *
3198  * This function handles completion of init vpi mailbox command.
3199  */
3200 void
3201 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3202 {
3203         struct lpfc_vport *vport = mboxq->vport;
3204         struct lpfc_nodelist *ndlp;
3205         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3206
3207         if (mboxq->u.mb.mbxStatus) {
3208                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3209                                  "2609 Init VPI mailbox failed 0x%x\n",
3210                                  mboxq->u.mb.mbxStatus);
3211                 mempool_free(mboxq, phba->mbox_mem_pool);
3212                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3213                 return;
3214         }
3215         spin_lock_irq(shost->host_lock);
3216         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
3217         spin_unlock_irq(shost->host_lock);
3218
3219         /* If this port is physical port or FDISC is done, do reg_vpi */
3220         if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
3221                         ndlp = lpfc_findnode_did(vport, Fabric_DID);
3222                         if (!ndlp)
3223                                 lpfc_printf_vlog(vport, KERN_ERR,
3224                                         LOG_TRACE_EVENT,
3225                                         "2731 Cannot find fabric "
3226                                         "controller node\n");
3227                         else
3228                                 lpfc_register_new_vport(phba, vport, ndlp);
3229                         mempool_free(mboxq, phba->mbox_mem_pool);
3230                         return;
3231         }
3232
3233         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
3234                 lpfc_initial_fdisc(vport);
3235         else {
3236                 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
3237                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3238                                  "2606 No NPIV Fabric support\n");
3239         }
3240         mempool_free(mboxq, phba->mbox_mem_pool);
3241         return;
3242 }
3243
3244 /**
3245  * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
3246  * @vport: pointer to lpfc_vport data structure.
3247  *
3248  * This function issue a init_vpi mailbox command to initialize
3249  * VPI for the vport.
3250  */
3251 void
3252 lpfc_issue_init_vpi(struct lpfc_vport *vport)
3253 {
3254         LPFC_MBOXQ_t *mboxq;
3255         int rc, vpi;
3256
3257         if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) {
3258                 vpi = lpfc_alloc_vpi(vport->phba);
3259                 if (!vpi) {
3260                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3261                                          "3303 Failed to obtain vport vpi\n");
3262                         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3263                         return;
3264                 }
3265                 vport->vpi = vpi;
3266         }
3267
3268         mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
3269         if (!mboxq) {
3270                 lpfc_printf_vlog(vport, KERN_ERR,
3271                         LOG_TRACE_EVENT, "2607 Failed to allocate "
3272                         "init_vpi mailbox\n");
3273                 return;
3274         }
3275         lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
3276         mboxq->vport = vport;
3277         mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
3278         rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
3279         if (rc == MBX_NOT_FINISHED) {
3280                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3281                                  "2608 Failed to issue init_vpi mailbox\n");
3282                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
3283         }
3284 }
3285
3286 /**
3287  * lpfc_start_fdiscs - send fdiscs for each vports on this port.
3288  * @phba: pointer to lpfc hba data structure.
3289  *
3290  * This function loops through the list of vports on the @phba and issues an
3291  * FDISC if possible.
3292  */
3293 void
3294 lpfc_start_fdiscs(struct lpfc_hba *phba)
3295 {
3296         struct lpfc_vport **vports;
3297         int i;
3298
3299         vports = lpfc_create_vport_work_array(phba);
3300         if (vports != NULL) {
3301                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3302                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
3303                                 continue;
3304                         /* There are no vpi for this vport */
3305                         if (vports[i]->vpi > phba->max_vpi) {
3306                                 lpfc_vport_set_state(vports[i],
3307                                                      FC_VPORT_FAILED);
3308                                 continue;
3309                         }
3310                         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3311                                 lpfc_vport_set_state(vports[i],
3312                                                      FC_VPORT_LINKDOWN);
3313                                 continue;
3314                         }
3315                         if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
3316                                 lpfc_issue_init_vpi(vports[i]);
3317                                 continue;
3318                         }
3319                         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
3320                                 lpfc_initial_fdisc(vports[i]);
3321                         else {
3322                                 lpfc_vport_set_state(vports[i],
3323                                                      FC_VPORT_NO_FABRIC_SUPP);
3324                                 lpfc_printf_vlog(vports[i], KERN_ERR,
3325                                                  LOG_TRACE_EVENT,
3326                                                  "0259 No NPIV "
3327                                                  "Fabric support\n");
3328                         }
3329                 }
3330         }
3331         lpfc_destroy_vport_work_array(phba, vports);
3332 }
3333
3334 void
3335 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3336 {
3337         struct lpfc_vport *vport = mboxq->vport;
3338         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3339
3340         /*
3341          * VFI not supported for interface type 0, so ignore any mailbox
3342          * error (except VFI in use) and continue with the discovery.
3343          */
3344         if (mboxq->u.mb.mbxStatus &&
3345             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
3346                         LPFC_SLI_INTF_IF_TYPE_0) &&
3347             mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
3348                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3349                                  "2018 REG_VFI mbxStatus error x%x "
3350                                  "HBA state x%x\n",
3351                                  mboxq->u.mb.mbxStatus, vport->port_state);
3352                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3353                         /* FLOGI failed, use loop map to make discovery list */
3354                         lpfc_disc_list_loopmap(vport);
3355                         /* Start discovery */
3356                         lpfc_disc_start(vport);
3357                         goto out_free_mem;
3358                 }
3359                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3360                 goto out_free_mem;
3361         }
3362
3363         /* If the VFI is already registered, there is nothing else to do
3364          * Unless this was a VFI update and we are in PT2PT mode, then
3365          * we should drop through to set the port state to ready.
3366          */
3367         if (vport->fc_flag & FC_VFI_REGISTERED)
3368                 if (!(phba->sli_rev == LPFC_SLI_REV4 &&
3369                       vport->fc_flag & FC_PT2PT))
3370                         goto out_free_mem;
3371
3372         /* The VPI is implicitly registered when the VFI is registered */
3373         spin_lock_irq(shost->host_lock);
3374         vport->vpi_state |= LPFC_VPI_REGISTERED;
3375         vport->fc_flag |= FC_VFI_REGISTERED;
3376         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3377         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
3378         spin_unlock_irq(shost->host_lock);
3379
3380         /* In case SLI4 FC loopback test, we are ready */
3381         if ((phba->sli_rev == LPFC_SLI_REV4) &&
3382             (phba->link_flag & LS_LOOPBACK_MODE)) {
3383                 phba->link_state = LPFC_HBA_READY;
3384                 goto out_free_mem;
3385         }
3386
3387         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3388                          "3313 cmpl reg vfi  port_state:%x fc_flag:%x myDid:%x "
3389                          "alpacnt:%d LinkState:%x topology:%x\n",
3390                          vport->port_state, vport->fc_flag, vport->fc_myDID,
3391                          vport->phba->alpa_map[0],
3392                          phba->link_state, phba->fc_topology);
3393
3394         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3395                 /*
3396                  * For private loop or for NPort pt2pt,
3397                  * just start discovery and we are done.
3398                  */
3399                 if ((vport->fc_flag & FC_PT2PT) ||
3400                     ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) &&
3401                     !(vport->fc_flag & FC_PUBLIC_LOOP))) {
3402
3403                         /* Use loop map to make discovery list */
3404                         lpfc_disc_list_loopmap(vport);
3405                         /* Start discovery */
3406                         if (vport->fc_flag & FC_PT2PT)
3407                                 vport->port_state = LPFC_VPORT_READY;
3408                         else
3409                                 lpfc_disc_start(vport);
3410                 } else {
3411                         lpfc_start_fdiscs(phba);
3412                         lpfc_do_scr_ns_plogi(phba, vport);
3413                 }
3414         }
3415
3416 out_free_mem:
3417         lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED);
3418 }
3419
3420 static void
3421 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3422 {
3423         MAILBOX_t *mb = &pmb->u.mb;
3424         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3425         struct lpfc_vport  *vport = pmb->vport;
3426         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3427         struct serv_parm *sp = &vport->fc_sparam;
3428         uint32_t ed_tov;
3429
3430         /* Check for error */
3431         if (mb->mbxStatus) {
3432                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
3433                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3434                                  "0319 READ_SPARAM mbxStatus error x%x "
3435                                  "hba state x%x>\n",
3436                                  mb->mbxStatus, vport->port_state);
3437                 lpfc_linkdown(phba);
3438                 goto out;
3439         }
3440
3441         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
3442                sizeof (struct serv_parm));
3443
3444         ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
3445         if (sp->cmn.edtovResolution)    /* E_D_TOV ticks are in nanoseconds */
3446                 ed_tov = (ed_tov + 999999) / 1000000;
3447
3448         phba->fc_edtov = ed_tov;
3449         phba->fc_ratov = (2 * ed_tov) / 1000;
3450         if (phba->fc_ratov < FF_DEF_RATOV) {
3451                 /* RA_TOV should be atleast 10sec for initial flogi */
3452                 phba->fc_ratov = FF_DEF_RATOV;
3453         }
3454
3455         lpfc_update_vport_wwn(vport);
3456         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
3457         if (vport->port_type == LPFC_PHYSICAL_PORT) {
3458                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
3459                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
3460         }
3461
3462         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
3463
3464         /* Check if sending the FLOGI is being deferred to after we get
3465          * up to date CSPs from MBX_READ_SPARAM.
3466          */
3467         if (phba->hba_flag & HBA_DEFER_FLOGI) {
3468                 lpfc_initial_flogi(vport);
3469                 phba->hba_flag &= ~HBA_DEFER_FLOGI;
3470         }
3471         return;
3472
3473 out:
3474         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
3475         lpfc_issue_clear_la(phba, vport);
3476 }
3477
3478 static void
3479 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
3480 {
3481         struct lpfc_vport *vport = phba->pport;
3482         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
3483         struct Scsi_Host *shost;
3484         int i;
3485         int rc;
3486         struct fcf_record *fcf_record;
3487         uint32_t fc_flags = 0;
3488         unsigned long iflags;
3489
3490         spin_lock_irqsave(&phba->hbalock, iflags);
3491         phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la);
3492
3493         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3494                 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) {
3495                 case LPFC_LINK_SPEED_1GHZ:
3496                 case LPFC_LINK_SPEED_2GHZ:
3497                 case LPFC_LINK_SPEED_4GHZ:
3498                 case LPFC_LINK_SPEED_8GHZ:
3499                 case LPFC_LINK_SPEED_10GHZ:
3500                 case LPFC_LINK_SPEED_16GHZ:
3501                 case LPFC_LINK_SPEED_32GHZ:
3502                 case LPFC_LINK_SPEED_64GHZ:
3503                 case LPFC_LINK_SPEED_128GHZ:
3504                 case LPFC_LINK_SPEED_256GHZ:
3505                         break;
3506                 default:
3507                         phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN;
3508                         break;
3509                 }
3510         }
3511
3512         if (phba->fc_topology &&
3513             phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) {
3514                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
3515                                 "3314 Toplogy changed was 0x%x is 0x%x\n",
3516                                 phba->fc_topology,
3517                                 bf_get(lpfc_mbx_read_top_topology, la));
3518                 phba->fc_topology_changed = 1;
3519         }
3520
3521         phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la);
3522         phba->link_flag &= ~(LS_NPIV_FAB_SUPPORTED | LS_CT_VEN_RPA);
3523
3524         shost = lpfc_shost_from_vport(vport);
3525         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3526                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
3527
3528                 /* if npiv is enabled and this adapter supports npiv log
3529                  * a message that npiv is not supported in this topology
3530                  */
3531                 if (phba->cfg_enable_npiv && phba->max_vpi)
3532                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3533                                 "1309 Link Up Event npiv not supported in loop "
3534                                 "topology\n");
3535                                 /* Get Loop Map information */
3536                 if (bf_get(lpfc_mbx_read_top_il, la))
3537                         fc_flags |= FC_LBIT;
3538
3539                 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la);
3540                 i = la->lilpBde64.tus.f.bdeSize;
3541
3542                 if (i == 0) {
3543                         phba->alpa_map[0] = 0;
3544                 } else {
3545                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
3546                                 int numalpa, j, k;
3547                                 union {
3548                                         uint8_t pamap[16];
3549                                         struct {
3550                                                 uint32_t wd1;
3551                                                 uint32_t wd2;
3552                                                 uint32_t wd3;
3553                                                 uint32_t wd4;
3554                                         } pa;
3555                                 } un;
3556                                 numalpa = phba->alpa_map[0];
3557                                 j = 0;
3558                                 while (j < numalpa) {
3559                                         memset(un.pamap, 0, 16);
3560                                         for (k = 1; j < numalpa; k++) {
3561                                                 un.pamap[k - 1] =
3562                                                         phba->alpa_map[j + 1];
3563                                                 j++;
3564                                                 if (k == 16)
3565                                                         break;
3566                                         }
3567                                         /* Link Up Event ALPA map */
3568                                         lpfc_printf_log(phba,
3569                                                         KERN_WARNING,
3570                                                         LOG_LINK_EVENT,
3571                                                         "1304 Link Up Event "
3572                                                         "ALPA map Data: x%x "
3573                                                         "x%x x%x x%x\n",
3574                                                         un.pa.wd1, un.pa.wd2,
3575                                                         un.pa.wd3, un.pa.wd4);
3576                                 }
3577                         }
3578                 }
3579         } else {
3580                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
3581                         if (phba->max_vpi && phba->cfg_enable_npiv &&
3582                            (phba->sli_rev >= LPFC_SLI_REV3))
3583                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
3584                 }
3585                 vport->fc_myDID = phba->fc_pref_DID;
3586                 fc_flags |= FC_LBIT;
3587         }
3588         spin_unlock_irqrestore(&phba->hbalock, iflags);
3589
3590         if (fc_flags) {
3591                 spin_lock_irqsave(shost->host_lock, iflags);
3592                 vport->fc_flag |= fc_flags;
3593                 spin_unlock_irqrestore(shost->host_lock, iflags);
3594         }
3595
3596         lpfc_linkup(phba);
3597         sparam_mbox = NULL;
3598
3599         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3600         if (!sparam_mbox)
3601                 goto out;
3602
3603         rc = lpfc_read_sparam(phba, sparam_mbox, 0);
3604         if (rc) {
3605                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3606                 goto out;
3607         }
3608         sparam_mbox->vport = vport;
3609         sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
3610         rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
3611         if (rc == MBX_NOT_FINISHED) {
3612                 lpfc_mbox_rsrc_cleanup(phba, sparam_mbox, MBOX_THD_UNLOCKED);
3613                 goto out;
3614         }
3615
3616         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3617                 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3618                 if (!cfglink_mbox)
3619                         goto out;
3620                 vport->port_state = LPFC_LOCAL_CFG_LINK;
3621                 lpfc_config_link(phba, cfglink_mbox);
3622                 cfglink_mbox->vport = vport;
3623                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
3624                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
3625                 if (rc == MBX_NOT_FINISHED) {
3626                         mempool_free(cfglink_mbox, phba->mbox_mem_pool);
3627                         goto out;
3628                 }
3629         } else {
3630                 vport->port_state = LPFC_VPORT_UNKNOWN;
3631                 /*
3632                  * Add the driver's default FCF record at FCF index 0 now. This
3633                  * is phase 1 implementation that support FCF index 0 and driver
3634                  * defaults.
3635                  */
3636                 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
3637                         fcf_record = kzalloc(sizeof(struct fcf_record),
3638                                         GFP_KERNEL);
3639                         if (unlikely(!fcf_record)) {
3640                                 lpfc_printf_log(phba, KERN_ERR,
3641                                         LOG_TRACE_EVENT,
3642                                         "2554 Could not allocate memory for "
3643                                         "fcf record\n");
3644                                 rc = -ENODEV;
3645                                 goto out;
3646                         }
3647
3648                         lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
3649                                                 LPFC_FCOE_FCF_DEF_INDEX);
3650                         rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
3651                         if (unlikely(rc)) {
3652                                 lpfc_printf_log(phba, KERN_ERR,
3653                                         LOG_TRACE_EVENT,
3654                                         "2013 Could not manually add FCF "
3655                                         "record 0, status %d\n", rc);
3656                                 rc = -ENODEV;
3657                                 kfree(fcf_record);
3658                                 goto out;
3659                         }
3660                         kfree(fcf_record);
3661                 }
3662                 /*
3663                  * The driver is expected to do FIP/FCF. Call the port
3664                  * and get the FCF Table.
3665                  */
3666                 spin_lock_irqsave(&phba->hbalock, iflags);
3667                 if (phba->hba_flag & FCF_TS_INPROG) {
3668                         spin_unlock_irqrestore(&phba->hbalock, iflags);
3669                         return;
3670                 }
3671                 /* This is the initial FCF discovery scan */
3672                 phba->fcf.fcf_flag |= FCF_INIT_DISC;
3673                 spin_unlock_irqrestore(&phba->hbalock, iflags);
3674                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3675                                 "2778 Start FCF table scan at linkup\n");
3676                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
3677                                                      LPFC_FCOE_FCF_GET_FIRST);
3678                 if (rc) {
3679                         spin_lock_irqsave(&phba->hbalock, iflags);
3680                         phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
3681                         spin_unlock_irqrestore(&phba->hbalock, iflags);
3682                         goto out;
3683                 }
3684                 /* Reset FCF roundrobin bmask for new discovery */
3685                 lpfc_sli4_clear_fcf_rr_bmask(phba);
3686         }
3687
3688         /* Prepare for LINK up registrations */
3689         memset(phba->os_host_name, 0, sizeof(phba->os_host_name));
3690         scnprintf(phba->os_host_name, sizeof(phba->os_host_name), "%s",
3691                   init_utsname()->nodename);
3692         return;
3693 out:
3694         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3695         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3696                          "0263 Discovery Mailbox error: state: 0x%x : x%px x%px\n",
3697                          vport->port_state, sparam_mbox, cfglink_mbox);
3698         lpfc_issue_clear_la(phba, vport);
3699         return;
3700 }
3701
3702 static void
3703 lpfc_enable_la(struct lpfc_hba *phba)
3704 {
3705         uint32_t control;
3706         struct lpfc_sli *psli = &phba->sli;
3707         spin_lock_irq(&phba->hbalock);
3708         psli->sli_flag |= LPFC_PROCESS_LA;
3709         if (phba->sli_rev <= LPFC_SLI_REV3) {
3710                 control = readl(phba->HCregaddr);
3711                 control |= HC_LAINT_ENA;
3712                 writel(control, phba->HCregaddr);
3713                 readl(phba->HCregaddr); /* flush */
3714         }
3715         spin_unlock_irq(&phba->hbalock);
3716 }
3717
3718 static void
3719 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
3720 {
3721         lpfc_linkdown(phba);
3722         lpfc_enable_la(phba);
3723         lpfc_unregister_unused_fcf(phba);
3724         /* turn on Link Attention interrupts - no CLEAR_LA needed */
3725 }
3726
3727
3728 /*
3729  * This routine handles processing a READ_TOPOLOGY mailbox
3730  * command upon completion. It is setup in the LPFC_MBOXQ
3731  * as the completion routine when the command is
3732  * handed off to the SLI layer. SLI4 only.
3733  */
3734 void
3735 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3736 {
3737         struct lpfc_vport *vport = pmb->vport;
3738         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3739         struct lpfc_mbx_read_top *la;
3740         struct lpfc_sli_ring *pring;
3741         MAILBOX_t *mb = &pmb->u.mb;
3742         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
3743         uint8_t attn_type;
3744         unsigned long iflags;
3745
3746         /* Unblock ELS traffic */
3747         pring = lpfc_phba_elsring(phba);
3748         if (pring)
3749                 pring->flag &= ~LPFC_STOP_IOCB_EVENT;
3750
3751         /* Check for error */
3752         if (mb->mbxStatus) {
3753                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3754                                 "1307 READ_LA mbox error x%x state x%x\n",
3755                                 mb->mbxStatus, vport->port_state);
3756                 lpfc_mbx_issue_link_down(phba);
3757                 phba->link_state = LPFC_HBA_ERROR;
3758                 goto lpfc_mbx_cmpl_read_topology_free_mbuf;
3759         }
3760
3761         la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
3762         attn_type = bf_get(lpfc_mbx_read_top_att_type, la);
3763
3764         memcpy(&phba->alpa_map[0], mp->virt, 128);
3765
3766         spin_lock_irqsave(shost->host_lock, iflags);
3767         if (bf_get(lpfc_mbx_read_top_pb, la))
3768                 vport->fc_flag |= FC_BYPASSED_MODE;
3769         else
3770                 vport->fc_flag &= ~FC_BYPASSED_MODE;
3771         spin_unlock_irqrestore(shost->host_lock, iflags);
3772
3773         if (phba->fc_eventTag <= la->eventTag) {
3774                 phba->fc_stat.LinkMultiEvent++;
3775                 if (attn_type == LPFC_ATT_LINK_UP)
3776                         if (phba->fc_eventTag != 0)
3777                                 lpfc_linkdown(phba);
3778         }
3779
3780         phba->fc_eventTag = la->eventTag;
3781         phba->link_events++;
3782         if (attn_type == LPFC_ATT_LINK_UP) {
3783                 phba->fc_stat.LinkUp++;
3784                 if (phba->link_flag & LS_LOOPBACK_MODE) {
3785                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3786                                         "1306 Link Up Event in loop back mode "
3787                                         "x%x received Data: x%x x%x x%x x%x\n",
3788                                         la->eventTag, phba->fc_eventTag,
3789                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3790                                                la),
3791                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3792                                         phba->alpa_map[0]);
3793                 } else {
3794                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3795                                         "1303 Link Up Event x%x received "
3796                                         "Data: x%x x%x x%x x%x x%x\n",
3797                                         la->eventTag, phba->fc_eventTag,
3798                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3799                                                la),
3800                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3801                                         phba->alpa_map[0],
3802                                         bf_get(lpfc_mbx_read_top_fa, la));
3803                 }
3804                 lpfc_mbx_process_link_up(phba, la);
3805
3806                 if (phba->cmf_active_mode != LPFC_CFG_OFF)
3807                         lpfc_cmf_signal_init(phba);
3808
3809                 if (phba->lmt & LMT_64Gb)
3810                         lpfc_read_lds_params(phba);
3811
3812         } else if (attn_type == LPFC_ATT_LINK_DOWN ||
3813                    attn_type == LPFC_ATT_UNEXP_WWPN) {
3814                 phba->fc_stat.LinkDown++;
3815                 if (phba->link_flag & LS_LOOPBACK_MODE)
3816                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3817                                 "1308 Link Down Event in loop back mode "
3818                                 "x%x received "
3819                                 "Data: x%x x%x x%x\n",
3820                                 la->eventTag, phba->fc_eventTag,
3821                                 phba->pport->port_state, vport->fc_flag);
3822                 else if (attn_type == LPFC_ATT_UNEXP_WWPN)
3823                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3824                                 "1313 Link Down Unexpected FA WWPN Event x%x "
3825                                 "received Data: x%x x%x x%x x%x\n",
3826                                 la->eventTag, phba->fc_eventTag,
3827                                 phba->pport->port_state, vport->fc_flag,
3828                                 bf_get(lpfc_mbx_read_top_fa, la));
3829                 else
3830                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3831                                 "1305 Link Down Event x%x received "
3832                                 "Data: x%x x%x x%x x%x\n",
3833                                 la->eventTag, phba->fc_eventTag,
3834                                 phba->pport->port_state, vport->fc_flag,
3835                                 bf_get(lpfc_mbx_read_top_fa, la));
3836                 lpfc_mbx_issue_link_down(phba);
3837         }
3838
3839         if ((phba->sli_rev < LPFC_SLI_REV4) &&
3840             bf_get(lpfc_mbx_read_top_fa, la))
3841                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3842                                 "1311 fa %d\n",
3843                                 bf_get(lpfc_mbx_read_top_fa, la));
3844
3845 lpfc_mbx_cmpl_read_topology_free_mbuf:
3846         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
3847 }
3848
3849 /*
3850  * This routine handles processing a REG_LOGIN mailbox
3851  * command upon completion. It is setup in the LPFC_MBOXQ
3852  * as the completion routine when the command is
3853  * handed off to the SLI layer.
3854  */
3855 void
3856 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3857 {
3858         struct lpfc_vport  *vport = pmb->vport;
3859         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3860         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
3861
3862         /* The driver calls the state machine with the pmb pointer
3863          * but wants to make sure a stale ctx_buf isn't acted on.
3864          * The ctx_buf is restored later and cleaned up.
3865          */
3866         pmb->ctx_buf = NULL;
3867         pmb->ctx_ndlp = NULL;
3868
3869         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI | LOG_NODE | LOG_DISCOVERY,
3870                          "0002 rpi:%x DID:%x flg:%x %d x%px\n",
3871                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
3872                          kref_read(&ndlp->kref),
3873                          ndlp);
3874         if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
3875                 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
3876
3877         if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL ||
3878             ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
3879                 /* We rcvd a rscn after issuing this
3880                  * mbox reg login, we may have cycled
3881                  * back through the state and be
3882                  * back at reg login state so this
3883                  * mbox needs to be ignored becase
3884                  * there is another reg login in
3885                  * process.
3886                  */
3887                 spin_lock_irq(&ndlp->lock);
3888                 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
3889                 spin_unlock_irq(&ndlp->lock);
3890
3891                 /*
3892                  * We cannot leave the RPI registered because
3893                  * if we go thru discovery again for this ndlp
3894                  * a subsequent REG_RPI will fail.
3895                  */
3896                 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3897                 lpfc_unreg_rpi(vport, ndlp);
3898         }
3899
3900         /* Call state machine */
3901         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
3902         pmb->ctx_buf = mp;
3903         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
3904
3905         /* decrement the node reference count held for this callback
3906          * function.
3907          */
3908         lpfc_nlp_put(ndlp);
3909
3910         return;
3911 }
3912
3913 static void
3914 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3915 {
3916         MAILBOX_t *mb = &pmb->u.mb;
3917         struct lpfc_vport *vport = pmb->vport;
3918         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3919
3920         switch (mb->mbxStatus) {
3921         case 0x0011:
3922         case 0x0020:
3923                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3924                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
3925                                  mb->mbxStatus);
3926                 break;
3927         /* If VPI is busy, reset the HBA */
3928         case 0x9700:
3929                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3930                         "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n",
3931                         vport->vpi, mb->mbxStatus);
3932                 if (!(phba->pport->load_flag & FC_UNLOADING))
3933                         lpfc_workq_post_event(phba, NULL, NULL,
3934                                 LPFC_EVT_RESET_HBA);
3935         }
3936         spin_lock_irq(shost->host_lock);
3937         vport->vpi_state &= ~LPFC_VPI_REGISTERED;
3938         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3939         spin_unlock_irq(shost->host_lock);
3940         mempool_free(pmb, phba->mbox_mem_pool);
3941         lpfc_cleanup_vports_rrqs(vport, NULL);
3942         /*
3943          * This shost reference might have been taken at the beginning of
3944          * lpfc_vport_delete()
3945          */
3946         if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
3947                 scsi_host_put(shost);
3948 }
3949
3950 int
3951 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
3952 {
3953         struct lpfc_hba  *phba = vport->phba;
3954         LPFC_MBOXQ_t *mbox;
3955         int rc;
3956
3957         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3958         if (!mbox)
3959                 return 1;
3960
3961         lpfc_unreg_vpi(phba, vport->vpi, mbox);
3962         mbox->vport = vport;
3963         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
3964         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3965         if (rc == MBX_NOT_FINISHED) {
3966                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3967                                  "1800 Could not issue unreg_vpi\n");
3968                 mempool_free(mbox, phba->mbox_mem_pool);
3969                 return rc;
3970         }
3971         return 0;
3972 }
3973
3974 static void
3975 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3976 {
3977         struct lpfc_vport *vport = pmb->vport;
3978         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3979         MAILBOX_t *mb = &pmb->u.mb;
3980
3981         switch (mb->mbxStatus) {
3982         case 0x0011:
3983         case 0x9601:
3984         case 0x9602:
3985                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3986                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
3987                                  mb->mbxStatus);
3988                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3989                 spin_lock_irq(shost->host_lock);
3990                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
3991                 spin_unlock_irq(shost->host_lock);
3992                 vport->fc_myDID = 0;
3993
3994                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
3995                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
3996                         if (phba->nvmet_support)
3997                                 lpfc_nvmet_update_targetport(phba);
3998                         else
3999                                 lpfc_nvme_update_localport(vport);
4000                 }
4001                 goto out;
4002         }
4003
4004         spin_lock_irq(shost->host_lock);
4005         vport->vpi_state |= LPFC_VPI_REGISTERED;
4006         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
4007         spin_unlock_irq(shost->host_lock);
4008         vport->num_disc_nodes = 0;
4009         /* go thru NPR list and issue ELS PLOGIs */
4010         if (vport->fc_npr_cnt)
4011                 lpfc_els_disc_plogi(vport);
4012
4013         if (!vport->num_disc_nodes) {
4014                 spin_lock_irq(shost->host_lock);
4015                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
4016                 spin_unlock_irq(shost->host_lock);
4017                 lpfc_can_disctmo(vport);
4018         }
4019         vport->port_state = LPFC_VPORT_READY;
4020
4021 out:
4022         mempool_free(pmb, phba->mbox_mem_pool);
4023         return;
4024 }
4025
4026 /**
4027  * lpfc_create_static_vport - Read HBA config region to create static vports.
4028  * @phba: pointer to lpfc hba data structure.
4029  *
4030  * This routine issue a DUMP mailbox command for config region 22 to get
4031  * the list of static vports to be created. The function create vports
4032  * based on the information returned from the HBA.
4033  **/
4034 void
4035 lpfc_create_static_vport(struct lpfc_hba *phba)
4036 {
4037         LPFC_MBOXQ_t *pmb = NULL;
4038         MAILBOX_t *mb;
4039         struct static_vport_info *vport_info;
4040         int mbx_wait_rc = 0, i;
4041         struct fc_vport_identifiers vport_id;
4042         struct fc_vport *new_fc_vport;
4043         struct Scsi_Host *shost;
4044         struct lpfc_vport *vport;
4045         uint16_t offset = 0;
4046         uint8_t *vport_buff;
4047         struct lpfc_dmabuf *mp;
4048         uint32_t byte_count = 0;
4049
4050         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4051         if (!pmb) {
4052                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4053                                 "0542 lpfc_create_static_vport failed to"
4054                                 " allocate mailbox memory\n");
4055                 return;
4056         }
4057         memset(pmb, 0, sizeof(LPFC_MBOXQ_t));
4058         mb = &pmb->u.mb;
4059
4060         vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
4061         if (!vport_info) {
4062                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4063                                 "0543 lpfc_create_static_vport failed to"
4064                                 " allocate vport_info\n");
4065                 mempool_free(pmb, phba->mbox_mem_pool);
4066                 return;
4067         }
4068
4069         vport_buff = (uint8_t *) vport_info;
4070         do {
4071                 /* While loop iteration forces a free dma buffer from
4072                  * the previous loop because the mbox is reused and
4073                  * the dump routine is a single-use construct.
4074                  */
4075                 if (pmb->ctx_buf) {
4076                         mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
4077                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
4078                         kfree(mp);
4079                         pmb->ctx_buf = NULL;
4080                 }
4081                 if (lpfc_dump_static_vport(phba, pmb, offset))
4082                         goto out;
4083
4084                 pmb->vport = phba->pport;
4085                 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb,
4086                                                         LPFC_MBOX_TMO);
4087
4088                 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) {
4089                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4090                                 "0544 lpfc_create_static_vport failed to"
4091                                 " issue dump mailbox command ret 0x%x "
4092                                 "status 0x%x\n",
4093                                 mbx_wait_rc, mb->mbxStatus);
4094                         goto out;
4095                 }
4096
4097                 if (phba->sli_rev == LPFC_SLI_REV4) {
4098                         byte_count = pmb->u.mqe.un.mb_words[5];
4099                         mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
4100                         if (byte_count > sizeof(struct static_vport_info) -
4101                                         offset)
4102                                 byte_count = sizeof(struct static_vport_info)
4103                                         - offset;
4104                         memcpy(vport_buff + offset, mp->virt, byte_count);
4105                         offset += byte_count;
4106                 } else {
4107                         if (mb->un.varDmp.word_cnt >
4108                                 sizeof(struct static_vport_info) - offset)
4109                                 mb->un.varDmp.word_cnt =
4110                                         sizeof(struct static_vport_info)
4111                                                 - offset;
4112                         byte_count = mb->un.varDmp.word_cnt;
4113                         lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
4114                                 vport_buff + offset,
4115                                 byte_count);
4116
4117                         offset += byte_count;
4118                 }
4119
4120         } while (byte_count &&
4121                 offset < sizeof(struct static_vport_info));
4122
4123
4124         if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
4125                 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
4126                         != VPORT_INFO_REV)) {
4127                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4128                                 "0545 lpfc_create_static_vport bad"
4129                                 " information header 0x%x 0x%x\n",
4130                                 le32_to_cpu(vport_info->signature),
4131                                 le32_to_cpu(vport_info->rev) &
4132                                 VPORT_INFO_REV_MASK);
4133
4134                 goto out;
4135         }
4136
4137         shost = lpfc_shost_from_vport(phba->pport);
4138
4139         for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
4140                 memset(&vport_id, 0, sizeof(vport_id));
4141                 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
4142                 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
4143                 if (!vport_id.port_name || !vport_id.node_name)
4144                         continue;
4145
4146                 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
4147                 vport_id.vport_type = FC_PORTTYPE_NPIV;
4148                 vport_id.disable = false;
4149                 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
4150
4151                 if (!new_fc_vport) {
4152                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4153                                 "0546 lpfc_create_static_vport failed to"
4154                                 " create vport\n");
4155                         continue;
4156                 }
4157
4158                 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
4159                 vport->vport_flag |= STATIC_VPORT;
4160         }
4161
4162 out:
4163         kfree(vport_info);
4164         if (mbx_wait_rc != MBX_TIMEOUT)
4165                 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4166 }
4167
4168 /*
4169  * This routine handles processing a Fabric REG_LOGIN mailbox
4170  * command upon completion. It is setup in the LPFC_MBOXQ
4171  * as the completion routine when the command is
4172  * handed off to the SLI layer.
4173  */
4174 void
4175 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4176 {
4177         struct lpfc_vport *vport = pmb->vport;
4178         MAILBOX_t *mb = &pmb->u.mb;
4179         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4180         struct Scsi_Host *shost;
4181
4182         pmb->ctx_ndlp = NULL;
4183
4184         if (mb->mbxStatus) {
4185                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4186                                  "0258 Register Fabric login error: 0x%x\n",
4187                                  mb->mbxStatus);
4188                 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4189                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4190                         /* FLOGI failed, use loop map to make discovery list */
4191                         lpfc_disc_list_loopmap(vport);
4192
4193                         /* Start discovery */
4194                         lpfc_disc_start(vport);
4195                         /* Decrement the reference count to ndlp after the
4196                          * reference to the ndlp are done.
4197                          */
4198                         lpfc_nlp_put(ndlp);
4199                         return;
4200                 }
4201
4202                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
4203                 /* Decrement the reference count to ndlp after the reference
4204                  * to the ndlp are done.
4205                  */
4206                 lpfc_nlp_put(ndlp);
4207                 return;
4208         }
4209
4210         if (phba->sli_rev < LPFC_SLI_REV4)
4211                 ndlp->nlp_rpi = mb->un.varWords[0];
4212         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4213         ndlp->nlp_type |= NLP_FABRIC;
4214         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4215
4216         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
4217                 /* when physical port receive logo donot start
4218                  * vport discovery */
4219                 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
4220                         lpfc_start_fdiscs(phba);
4221                 else {
4222                         shost = lpfc_shost_from_vport(vport);
4223                         spin_lock_irq(shost->host_lock);
4224                         vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ;
4225                         spin_unlock_irq(shost->host_lock);
4226                 }
4227                 lpfc_do_scr_ns_plogi(phba, vport);
4228         }
4229
4230         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4231
4232         /* Drop the reference count from the mbox at the end after
4233          * all the current reference to the ndlp have been done.
4234          */
4235         lpfc_nlp_put(ndlp);
4236         return;
4237 }
4238
4239  /*
4240   * This routine will issue a GID_FT for each FC4 Type supported
4241   * by the driver. ALL GID_FTs must complete before discovery is started.
4242   */
4243 int
4244 lpfc_issue_gidft(struct lpfc_vport *vport)
4245 {
4246         /* Good status, issue CT Request to NameServer */
4247         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4248             (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) {
4249                 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_FCP)) {
4250                         /* Cannot issue NameServer FCP Query, so finish up
4251                          * discovery
4252                          */
4253                         lpfc_printf_vlog(vport, KERN_ERR,
4254                                          LOG_TRACE_EVENT,
4255                                          "0604 %s FC TYPE %x %s\n",
4256                                          "Failed to issue GID_FT to ",
4257                                          FC_TYPE_FCP,
4258                                          "Finishing discovery.");
4259                         return 0;
4260                 }
4261                 vport->gidft_inp++;
4262         }
4263
4264         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4265             (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
4266                 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_NVME)) {
4267                         /* Cannot issue NameServer NVME Query, so finish up
4268                          * discovery
4269                          */
4270                         lpfc_printf_vlog(vport, KERN_ERR,
4271                                          LOG_TRACE_EVENT,
4272                                          "0605 %s FC_TYPE %x %s %d\n",
4273                                          "Failed to issue GID_FT to ",
4274                                          FC_TYPE_NVME,
4275                                          "Finishing discovery: gidftinp ",
4276                                          vport->gidft_inp);
4277                         if (vport->gidft_inp == 0)
4278                                 return 0;
4279                 } else
4280                         vport->gidft_inp++;
4281         }
4282         return vport->gidft_inp;
4283 }
4284
4285 /**
4286  * lpfc_issue_gidpt - issue a GID_PT for all N_Ports
4287  * @vport: The virtual port for which this call is being executed.
4288  *
4289  * This routine will issue a GID_PT to get a list of all N_Ports
4290  *
4291  * Return value :
4292  *   0 - Failure to issue a GID_PT
4293  *   1 - GID_PT issued
4294  **/
4295 int
4296 lpfc_issue_gidpt(struct lpfc_vport *vport)
4297 {
4298         /* Good status, issue CT Request to NameServer */
4299         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) {
4300                 /* Cannot issue NameServer FCP Query, so finish up
4301                  * discovery
4302                  */
4303                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4304                                  "0606 %s Port TYPE %x %s\n",
4305                                  "Failed to issue GID_PT to ",
4306                                  GID_PT_N_PORT,
4307                                  "Finishing discovery.");
4308                 return 0;
4309         }
4310         vport->gidft_inp++;
4311         return 1;
4312 }
4313
4314 /*
4315  * This routine handles processing a NameServer REG_LOGIN mailbox
4316  * command upon completion. It is setup in the LPFC_MBOXQ
4317  * as the completion routine when the command is
4318  * handed off to the SLI layer.
4319  */
4320 void
4321 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4322 {
4323         MAILBOX_t *mb = &pmb->u.mb;
4324         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4325         struct lpfc_vport *vport = pmb->vport;
4326         int rc;
4327
4328         pmb->ctx_ndlp = NULL;
4329         vport->gidft_inp = 0;
4330
4331         if (mb->mbxStatus) {
4332                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4333                                  "0260 Register NameServer error: 0x%x\n",
4334                                  mb->mbxStatus);
4335
4336 out:
4337                 /* decrement the node reference count held for this
4338                  * callback function.
4339                  */
4340                 lpfc_nlp_put(ndlp);
4341                 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4342
4343                 /* If the node is not registered with the scsi or nvme
4344                  * transport, remove the fabric node.  The failed reg_login
4345                  * is terminal and forces the removal of the last node
4346                  * reference.
4347                  */
4348                 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
4349                         spin_lock_irq(&ndlp->lock);
4350                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
4351                         spin_unlock_irq(&ndlp->lock);
4352                         lpfc_nlp_put(ndlp);
4353                 }
4354
4355                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4356                         /*
4357                          * RegLogin failed, use loop map to make discovery
4358                          * list
4359                          */
4360                         lpfc_disc_list_loopmap(vport);
4361
4362                         /* Start discovery */
4363                         lpfc_disc_start(vport);
4364                         return;
4365                 }
4366                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
4367                 return;
4368         }
4369
4370         if (phba->sli_rev < LPFC_SLI_REV4)
4371                 ndlp->nlp_rpi = mb->un.varWords[0];
4372         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4373         ndlp->nlp_type |= NLP_FABRIC;
4374         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4375         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
4376                          "0003 rpi:%x DID:%x flg:%x %d x%px\n",
4377                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
4378                          kref_read(&ndlp->kref),
4379                          ndlp);
4380
4381         if (vport->port_state < LPFC_VPORT_READY) {
4382                 /* Link up discovery requires Fabric registration. */
4383                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
4384                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
4385                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
4386                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
4387
4388                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4389                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP))
4390                         lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, FC_TYPE_FCP);
4391
4392                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4393                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME))
4394                         lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0,
4395                                     FC_TYPE_NVME);
4396
4397                 /* Issue SCR just before NameServer GID_FT Query */
4398                 lpfc_issue_els_scr(vport, 0);
4399
4400                 /* Link was bounced or a Fabric LOGO occurred.  Start EDC
4401                  * with initial FW values provided the congestion mode is
4402                  * not off.  Note that signals may or may not be supported
4403                  * by the adapter but FPIN is provided by default for 1
4404                  * or both missing signals support.
4405                  */
4406                 if (phba->cmf_active_mode != LPFC_CFG_OFF) {
4407                         phba->cgn_reg_fpin = phba->cgn_init_reg_fpin;
4408                         phba->cgn_reg_signal = phba->cgn_init_reg_signal;
4409                         rc = lpfc_issue_els_edc(vport, 0);
4410                         lpfc_printf_log(phba, KERN_INFO,
4411                                         LOG_INIT | LOG_ELS | LOG_DISCOVERY,
4412                                         "4220 Issue EDC status x%x Data x%x\n",
4413                                         rc, phba->cgn_init_reg_signal);
4414                 } else if (phba->lmt & LMT_64Gb) {
4415                         /* may send link fault capability descriptor */
4416                         lpfc_issue_els_edc(vport, 0);
4417                 } else {
4418                         lpfc_issue_els_rdf(vport, 0);
4419                 }
4420         }
4421
4422         vport->fc_ns_retry = 0;
4423         if (lpfc_issue_gidft(vport) == 0)
4424                 goto out;
4425
4426         /*
4427          * At this point in time we may need to wait for multiple
4428          * SLI_CTNS_GID_FT CT commands to complete before we start discovery.
4429          *
4430          * decrement the node reference count held for this
4431          * callback function.
4432          */
4433         lpfc_nlp_put(ndlp);
4434         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4435         return;
4436 }
4437
4438 /*
4439  * This routine handles processing a Fabric Controller REG_LOGIN mailbox
4440  * command upon completion. It is setup in the LPFC_MBOXQ
4441  * as the completion routine when the command is handed off to the SLI layer.
4442  */
4443 void
4444 lpfc_mbx_cmpl_fc_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4445 {
4446         struct lpfc_vport *vport = pmb->vport;
4447         MAILBOX_t *mb = &pmb->u.mb;
4448         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4449
4450         pmb->ctx_ndlp = NULL;
4451         if (mb->mbxStatus) {
4452                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4453                                  "0933 %s: Register FC login error: 0x%x\n",
4454                                  __func__, mb->mbxStatus);
4455                 goto out;
4456         }
4457
4458         lpfc_check_nlp_post_devloss(vport, ndlp);
4459
4460         if (phba->sli_rev < LPFC_SLI_REV4)
4461                 ndlp->nlp_rpi = mb->un.varWords[0];
4462
4463         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4464                          "0934 %s: Complete FC x%x RegLogin rpi x%x ste x%x\n",
4465                          __func__, ndlp->nlp_DID, ndlp->nlp_rpi,
4466                          ndlp->nlp_state);
4467
4468         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4469         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
4470         ndlp->nlp_type |= NLP_FABRIC;
4471         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4472
4473  out:
4474         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4475
4476         /* Drop the reference count from the mbox at the end after
4477          * all the current reference to the ndlp have been done.
4478          */
4479         lpfc_nlp_put(ndlp);
4480 }
4481
4482 static void
4483 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4484 {
4485         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4486         struct fc_rport  *rport;
4487         struct lpfc_rport_data *rdata;
4488         struct fc_rport_identifiers rport_ids;
4489         struct lpfc_hba  *phba = vport->phba;
4490         unsigned long flags;
4491
4492         if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4493                 return;
4494
4495         /* Remote port has reappeared. Re-register w/ FC transport */
4496         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
4497         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
4498         rport_ids.port_id = ndlp->nlp_DID;
4499         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
4500
4501
4502         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4503                               "rport add:       did:x%x flg:x%x type x%x",
4504                               ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4505
4506         /* Don't add the remote port if unloading. */
4507         if (vport->load_flag & FC_UNLOADING)
4508                 return;
4509
4510         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
4511         if (!rport) {
4512                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
4513                            "Warning: fc_remote_port_add failed\n");
4514                 return;
4515         }
4516
4517         /* Successful port add.  Complete initializing node data */
4518         rport->maxframe_size = ndlp->nlp_maxframe;
4519         rport->supported_classes = ndlp->nlp_class_sup;
4520         rdata = rport->dd_data;
4521         rdata->pnode = lpfc_nlp_get(ndlp);
4522         if (!rdata->pnode) {
4523                 dev_warn(&phba->pcidev->dev,
4524                          "Warning - node ref failed. Unreg rport\n");
4525                 fc_remote_port_delete(rport);
4526                 ndlp->rport = NULL;
4527                 return;
4528         }
4529
4530         spin_lock_irqsave(&ndlp->lock, flags);
4531         ndlp->fc4_xpt_flags |= SCSI_XPT_REGD;
4532         spin_unlock_irqrestore(&ndlp->lock, flags);
4533
4534         if (ndlp->nlp_type & NLP_FCP_TARGET)
4535                 rport_ids.roles |= FC_PORT_ROLE_FCP_TARGET;
4536         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
4537                 rport_ids.roles |= FC_PORT_ROLE_FCP_INITIATOR;
4538         if (ndlp->nlp_type & NLP_NVME_INITIATOR)
4539                 rport_ids.roles |= FC_PORT_ROLE_NVME_INITIATOR;
4540         if (ndlp->nlp_type & NLP_NVME_TARGET)
4541                 rport_ids.roles |= FC_PORT_ROLE_NVME_TARGET;
4542         if (ndlp->nlp_type & NLP_NVME_DISCOVERY)
4543                 rport_ids.roles |= FC_PORT_ROLE_NVME_DISCOVERY;
4544
4545         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
4546                 fc_remote_port_rolechg(rport, rport_ids.roles);
4547
4548         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
4549                          "3183 %s rport x%px DID x%x, role x%x refcnt %d\n",
4550                          __func__, rport, rport->port_id, rport->roles,
4551                          kref_read(&ndlp->kref));
4552
4553         if ((rport->scsi_target_id != -1) &&
4554             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
4555                 ndlp->nlp_sid = rport->scsi_target_id;
4556         }
4557
4558         return;
4559 }
4560
4561 static void
4562 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
4563 {
4564         struct fc_rport *rport = ndlp->rport;
4565         struct lpfc_vport *vport = ndlp->vport;
4566
4567         if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4568                 return;
4569
4570         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4571                 "rport delete:    did:x%x flg:x%x type x%x",
4572                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4573
4574         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4575                          "3184 rport unregister x%06x, rport x%px "
4576                          "xptflg x%x refcnt %d\n",
4577                          ndlp->nlp_DID, rport, ndlp->fc4_xpt_flags,
4578                          kref_read(&ndlp->kref));
4579
4580         fc_remote_port_delete(rport);
4581         lpfc_nlp_put(ndlp);
4582 }
4583
4584 static void
4585 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
4586 {
4587         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4588         unsigned long iflags;
4589
4590         spin_lock_irqsave(shost->host_lock, iflags);
4591         switch (state) {
4592         case NLP_STE_UNUSED_NODE:
4593                 vport->fc_unused_cnt += count;
4594                 break;
4595         case NLP_STE_PLOGI_ISSUE:
4596                 vport->fc_plogi_cnt += count;
4597                 break;
4598         case NLP_STE_ADISC_ISSUE:
4599                 vport->fc_adisc_cnt += count;
4600                 break;
4601         case NLP_STE_REG_LOGIN_ISSUE:
4602                 vport->fc_reglogin_cnt += count;
4603                 break;
4604         case NLP_STE_PRLI_ISSUE:
4605                 vport->fc_prli_cnt += count;
4606                 break;
4607         case NLP_STE_UNMAPPED_NODE:
4608                 vport->fc_unmap_cnt += count;
4609                 break;
4610         case NLP_STE_MAPPED_NODE:
4611                 vport->fc_map_cnt += count;
4612                 break;
4613         case NLP_STE_NPR_NODE:
4614                 if (vport->fc_npr_cnt == 0 && count == -1)
4615                         vport->fc_npr_cnt = 0;
4616                 else
4617                         vport->fc_npr_cnt += count;
4618                 break;
4619         }
4620         spin_unlock_irqrestore(shost->host_lock, iflags);
4621 }
4622
4623 /* Register a node with backend if not already done */
4624 void
4625 lpfc_nlp_reg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4626 {
4627         unsigned long iflags;
4628
4629         lpfc_check_nlp_post_devloss(vport, ndlp);
4630
4631         spin_lock_irqsave(&ndlp->lock, iflags);
4632         if (ndlp->fc4_xpt_flags & NLP_XPT_REGD) {
4633                 /* Already registered with backend, trigger rescan */
4634                 spin_unlock_irqrestore(&ndlp->lock, iflags);
4635
4636                 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD &&
4637                     ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY)) {
4638                         lpfc_nvme_rescan_port(vport, ndlp);
4639                 }
4640                 return;
4641         }
4642
4643         ndlp->fc4_xpt_flags |= NLP_XPT_REGD;
4644         spin_unlock_irqrestore(&ndlp->lock, iflags);
4645
4646         if (lpfc_valid_xpt_node(ndlp)) {
4647                 vport->phba->nport_event_cnt++;
4648                 /*
4649                  * Tell the fc transport about the port, if we haven't
4650                  * already. If we have, and it's a scsi entity, be
4651                  */
4652                 lpfc_register_remote_port(vport, ndlp);
4653         }
4654
4655         /* We are done if we do not have any NVME remote node */
4656         if (!(ndlp->nlp_fc4_type & NLP_FC4_NVME))
4657                 return;
4658
4659         /* Notify the NVME transport of this new rport. */
4660         if (vport->phba->sli_rev >= LPFC_SLI_REV4 &&
4661                         ndlp->nlp_fc4_type & NLP_FC4_NVME) {
4662                 if (vport->phba->nvmet_support == 0) {
4663                         /* Register this rport with the transport.
4664                          * Only NVME Target Rports are registered with
4665                          * the transport.
4666                          */
4667                         if (ndlp->nlp_type & NLP_NVME_TARGET) {
4668                                 vport->phba->nport_event_cnt++;
4669                                 lpfc_nvme_register_port(vport, ndlp);
4670                         }
4671                 } else {
4672                         /* Just take an NDLP ref count since the
4673                          * target does not register rports.
4674                          */
4675                         lpfc_nlp_get(ndlp);
4676                 }
4677         }
4678 }
4679
4680 /* Unregister a node with backend if not already done */
4681 void
4682 lpfc_nlp_unreg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4683 {
4684         unsigned long iflags;
4685
4686         spin_lock_irqsave(&ndlp->lock, iflags);
4687         if (!(ndlp->fc4_xpt_flags & NLP_XPT_REGD)) {
4688                 spin_unlock_irqrestore(&ndlp->lock, iflags);
4689                 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
4690                                  "0999 %s Not regd: ndlp x%px rport x%px DID "
4691                                  "x%x FLG x%x XPT x%x\n",
4692                                   __func__, ndlp, ndlp->rport, ndlp->nlp_DID,
4693                                   ndlp->nlp_flag, ndlp->fc4_xpt_flags);
4694                 return;
4695         }
4696
4697         ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD;
4698         spin_unlock_irqrestore(&ndlp->lock, iflags);
4699
4700         if (ndlp->rport &&
4701             ndlp->fc4_xpt_flags & SCSI_XPT_REGD) {
4702                 vport->phba->nport_event_cnt++;
4703                 lpfc_unregister_remote_port(ndlp);
4704         } else if (!ndlp->rport) {
4705                 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
4706                                  "1999 %s NDLP in devloss x%px DID x%x FLG x%x"
4707                                  " XPT x%x refcnt %d\n",
4708                                  __func__, ndlp, ndlp->nlp_DID, ndlp->nlp_flag,
4709                                  ndlp->fc4_xpt_flags,
4710                                  kref_read(&ndlp->kref));
4711         }
4712
4713         if (ndlp->fc4_xpt_flags & NVME_XPT_REGD) {
4714                 vport->phba->nport_event_cnt++;
4715                 if (vport->phba->nvmet_support == 0) {
4716                         /* Start devloss if target. */
4717                         if (ndlp->nlp_type & NLP_NVME_TARGET)
4718                                 lpfc_nvme_unregister_port(vport, ndlp);
4719                 } else {
4720                         /* NVMET has no upcall. */
4721                         lpfc_nlp_put(ndlp);
4722                 }
4723         }
4724
4725 }
4726
4727 /*
4728  * Adisc state change handling
4729  */
4730 static void
4731 lpfc_handle_adisc_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4732                 int new_state)
4733 {
4734         switch (new_state) {
4735         /*
4736          * Any state to ADISC_ISSUE
4737          * Do nothing, adisc cmpl handling will trigger state changes
4738          */
4739         case NLP_STE_ADISC_ISSUE:
4740                 break;
4741
4742         /*
4743          * ADISC_ISSUE to mapped states
4744          * Trigger a registration with backend, it will be nop if
4745          * already registered
4746          */
4747         case NLP_STE_UNMAPPED_NODE:
4748                 ndlp->nlp_type |= NLP_FC_NODE;
4749                 fallthrough;
4750         case NLP_STE_MAPPED_NODE:
4751                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4752                 lpfc_nlp_reg_node(vport, ndlp);
4753                 break;
4754
4755         /*
4756          * ADISC_ISSUE to non-mapped states
4757          * We are moving from ADISC_ISSUE to a non-mapped state because
4758          * ADISC failed, we would have skipped unregistering with
4759          * backend, attempt it now
4760          */
4761         case NLP_STE_NPR_NODE:
4762                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
4763                 fallthrough;
4764         default:
4765                 lpfc_nlp_unreg_node(vport, ndlp);
4766                 break;
4767         }
4768
4769 }
4770
4771 static void
4772 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4773                        int old_state, int new_state)
4774 {
4775         /* Trap ADISC changes here */
4776         if (new_state == NLP_STE_ADISC_ISSUE ||
4777             old_state == NLP_STE_ADISC_ISSUE) {
4778                 lpfc_handle_adisc_state(vport, ndlp, new_state);
4779                 return;
4780         }
4781
4782         if (new_state == NLP_STE_UNMAPPED_NODE) {
4783                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4784                 ndlp->nlp_type |= NLP_FC_NODE;
4785         }
4786         if (new_state == NLP_STE_MAPPED_NODE)
4787                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4788         if (new_state == NLP_STE_NPR_NODE)
4789                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
4790
4791         /* Reg/Unreg for FCP and NVME Transport interface */
4792         if ((old_state == NLP_STE_MAPPED_NODE ||
4793              old_state == NLP_STE_UNMAPPED_NODE)) {
4794                 /* For nodes marked for ADISC, Handle unreg in ADISC cmpl
4795                  * if linkup. In linkdown do unreg_node
4796                  */
4797                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC) ||
4798                     !lpfc_is_link_up(vport->phba))
4799                         lpfc_nlp_unreg_node(vport, ndlp);
4800         }
4801
4802         if (new_state ==  NLP_STE_MAPPED_NODE ||
4803             new_state == NLP_STE_UNMAPPED_NODE)
4804                 lpfc_nlp_reg_node(vport, ndlp);
4805
4806         /*
4807          * If the node just added to Mapped list was an FCP target,
4808          * but the remote port registration failed or assigned a target
4809          * id outside the presentable range - move the node to the
4810          * Unmapped List.
4811          */
4812         if ((new_state == NLP_STE_MAPPED_NODE) &&
4813             (ndlp->nlp_type & NLP_FCP_TARGET) &&
4814             (!ndlp->rport ||
4815              ndlp->rport->scsi_target_id == -1 ||
4816              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
4817                 spin_lock_irq(&ndlp->lock);
4818                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
4819                 spin_unlock_irq(&ndlp->lock);
4820                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4821         }
4822 }
4823
4824 static char *
4825 lpfc_nlp_state_name(char *buffer, size_t size, int state)
4826 {
4827         static char *states[] = {
4828                 [NLP_STE_UNUSED_NODE] = "UNUSED",
4829                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
4830                 [NLP_STE_ADISC_ISSUE] = "ADISC",
4831                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
4832                 [NLP_STE_PRLI_ISSUE] = "PRLI",
4833                 [NLP_STE_LOGO_ISSUE] = "LOGO",
4834                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
4835                 [NLP_STE_MAPPED_NODE] = "MAPPED",
4836                 [NLP_STE_NPR_NODE] = "NPR",
4837         };
4838
4839         if (state < NLP_STE_MAX_STATE && states[state])
4840                 strscpy(buffer, states[state], size);
4841         else
4842                 snprintf(buffer, size, "unknown (%d)", state);
4843         return buffer;
4844 }
4845
4846 void
4847 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4848                    int state)
4849 {
4850         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4851         int  old_state = ndlp->nlp_state;
4852         int node_dropped = ndlp->nlp_flag & NLP_DROPPED;
4853         char name1[16], name2[16];
4854
4855         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4856                          "0904 NPort state transition x%06x, %s -> %s\n",
4857                          ndlp->nlp_DID,
4858                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
4859                          lpfc_nlp_state_name(name2, sizeof(name2), state));
4860
4861         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4862                 "node statechg    did:x%x old:%d ste:%d",
4863                 ndlp->nlp_DID, old_state, state);
4864
4865         if (node_dropped && old_state == NLP_STE_UNUSED_NODE &&
4866             state != NLP_STE_UNUSED_NODE) {
4867                 ndlp->nlp_flag &= ~NLP_DROPPED;
4868                 lpfc_nlp_get(ndlp);
4869         }
4870
4871         if (old_state == NLP_STE_NPR_NODE &&
4872             state != NLP_STE_NPR_NODE)
4873                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4874         if (old_state == NLP_STE_UNMAPPED_NODE) {
4875                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
4876                 ndlp->nlp_type &= ~NLP_FC_NODE;
4877         }
4878
4879         if (list_empty(&ndlp->nlp_listp)) {
4880                 spin_lock_irq(shost->host_lock);
4881                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4882                 spin_unlock_irq(shost->host_lock);
4883         } else if (old_state)
4884                 lpfc_nlp_counters(vport, old_state, -1);
4885
4886         ndlp->nlp_state = state;
4887         lpfc_nlp_counters(vport, state, 1);
4888         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
4889 }
4890
4891 void
4892 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4893 {
4894         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
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         }
4901 }
4902
4903 void
4904 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4905 {
4906         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4907
4908         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4909         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4910                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4911         spin_lock_irq(shost->host_lock);
4912         list_del_init(&ndlp->nlp_listp);
4913         spin_unlock_irq(shost->host_lock);
4914         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4915                                 NLP_STE_UNUSED_NODE);
4916 }
4917
4918 /**
4919  * lpfc_initialize_node - Initialize all fields of node object
4920  * @vport: Pointer to Virtual Port object.
4921  * @ndlp: Pointer to FC node object.
4922  * @did: FC_ID of the node.
4923  *
4924  * This function is always called when node object need to be initialized.
4925  * It initializes all the fields of the node object. Although the reference
4926  * to phba from @ndlp can be obtained indirectly through it's reference to
4927  * @vport, a direct reference to phba is taken here by @ndlp. This is due
4928  * to the life-span of the @ndlp might go beyond the existence of @vport as
4929  * the final release of ndlp is determined by its reference count. And, the
4930  * operation on @ndlp needs the reference to phba.
4931  **/
4932 static inline void
4933 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4934         uint32_t did)
4935 {
4936         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
4937         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
4938         timer_setup(&ndlp->nlp_delayfunc, lpfc_els_retry_delay, 0);
4939         INIT_LIST_HEAD(&ndlp->recovery_evt.evt_listp);
4940
4941         ndlp->nlp_DID = did;
4942         ndlp->vport = vport;
4943         ndlp->phba = vport->phba;
4944         ndlp->nlp_sid = NLP_NO_SID;
4945         ndlp->nlp_fc4_type = NLP_FC4_NONE;
4946         kref_init(&ndlp->kref);
4947         atomic_set(&ndlp->cmd_pending, 0);
4948         ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
4949         ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
4950 }
4951
4952 void
4953 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4954 {
4955         /*
4956          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
4957          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
4958          * the ndlp from the vport. The ndlp marked as UNUSED on the list
4959          * until ALL other outstanding threads have completed. We check
4960          * that the ndlp not already in the UNUSED state before we proceed.
4961          */
4962         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
4963                 return;
4964         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
4965         ndlp->nlp_flag |= NLP_DROPPED;
4966         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4967                 lpfc_cleanup_vports_rrqs(vport, ndlp);
4968                 lpfc_unreg_rpi(vport, ndlp);
4969         }
4970
4971         lpfc_nlp_put(ndlp);
4972         return;
4973 }
4974
4975 /*
4976  * Start / ReStart rescue timer for Discovery / RSCN handling
4977  */
4978 void
4979 lpfc_set_disctmo(struct lpfc_vport *vport)
4980 {
4981         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4982         struct lpfc_hba  *phba = vport->phba;
4983         uint32_t tmo;
4984
4985         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
4986                 /* For FAN, timeout should be greater than edtov */
4987                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
4988         } else {
4989                 /* Normal discovery timeout should be > than ELS/CT timeout
4990                  * FC spec states we need 3 * ratov for CT requests
4991                  */
4992                 tmo = ((phba->fc_ratov * 3) + 3);
4993         }
4994
4995
4996         if (!timer_pending(&vport->fc_disctmo)) {
4997                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4998                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
4999                         tmo, vport->port_state, vport->fc_flag);
5000         }
5001
5002         mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo));
5003         spin_lock_irq(shost->host_lock);
5004         vport->fc_flag |= FC_DISC_TMO;
5005         spin_unlock_irq(shost->host_lock);
5006
5007         /* Start Discovery Timer state <hba_state> */
5008         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5009                          "0247 Start Discovery Timer state x%x "
5010                          "Data: x%x x%lx x%x x%x\n",
5011                          vport->port_state, tmo,
5012                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
5013                          vport->fc_adisc_cnt);
5014
5015         return;
5016 }
5017
5018 /*
5019  * Cancel rescue timer for Discovery / RSCN handling
5020  */
5021 int
5022 lpfc_can_disctmo(struct lpfc_vport *vport)
5023 {
5024         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5025         unsigned long iflags;
5026
5027         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
5028                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
5029                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
5030
5031         /* Turn off discovery timer if its running */
5032         if (vport->fc_flag & FC_DISC_TMO ||
5033             timer_pending(&vport->fc_disctmo)) {
5034                 spin_lock_irqsave(shost->host_lock, iflags);
5035                 vport->fc_flag &= ~FC_DISC_TMO;
5036                 spin_unlock_irqrestore(shost->host_lock, iflags);
5037                 del_timer_sync(&vport->fc_disctmo);
5038                 spin_lock_irqsave(&vport->work_port_lock, iflags);
5039                 vport->work_port_events &= ~WORKER_DISC_TMO;
5040                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
5041         }
5042
5043         /* Cancel Discovery Timer state <hba_state> */
5044         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5045                          "0248 Cancel Discovery Timer state x%x "
5046                          "Data: x%x x%x x%x\n",
5047                          vport->port_state, vport->fc_flag,
5048                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
5049         return 0;
5050 }
5051
5052 /*
5053  * Check specified ring for outstanding IOCB on the SLI queue
5054  * Return true if iocb matches the specified nport
5055  */
5056 int
5057 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
5058                     struct lpfc_sli_ring *pring,
5059                     struct lpfc_iocbq *iocb,
5060                     struct lpfc_nodelist *ndlp)
5061 {
5062         struct lpfc_vport *vport = ndlp->vport;
5063         u8 ulp_command;
5064         u16 ulp_context;
5065         u32 remote_id;
5066
5067         if (iocb->vport != vport)
5068                 return 0;
5069
5070         ulp_command = get_job_cmnd(phba, iocb);
5071         ulp_context = get_job_ulpcontext(phba, iocb);
5072         remote_id = get_job_els_rsp64_did(phba, iocb);
5073
5074         if (pring->ringno == LPFC_ELS_RING) {
5075                 switch (ulp_command) {
5076                 case CMD_GEN_REQUEST64_CR:
5077                         if (iocb->ndlp == ndlp)
5078                                 return 1;
5079                         fallthrough;
5080                 case CMD_ELS_REQUEST64_CR:
5081                         if (remote_id == ndlp->nlp_DID)
5082                                 return 1;
5083                         fallthrough;
5084                 case CMD_XMIT_ELS_RSP64_CX:
5085                         if (iocb->ndlp == ndlp)
5086                                 return 1;
5087                 }
5088         } else if (pring->ringno == LPFC_FCP_RING) {
5089                 /* Skip match check if waiting to relogin to FCP target */
5090                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
5091                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
5092                         return 0;
5093                 }
5094                 if (ulp_context == ndlp->nlp_rpi)
5095                         return 1;
5096         }
5097         return 0;
5098 }
5099
5100 static void
5101 __lpfc_dequeue_nport_iocbs(struct lpfc_hba *phba,
5102                 struct lpfc_nodelist *ndlp, struct lpfc_sli_ring *pring,
5103                 struct list_head *dequeue_list)
5104 {
5105         struct lpfc_iocbq *iocb, *next_iocb;
5106
5107         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
5108                 /* Check to see if iocb matches the nport */
5109                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
5110                         /* match, dequeue */
5111                         list_move_tail(&iocb->list, dequeue_list);
5112         }
5113 }
5114
5115 static void
5116 lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba *phba,
5117                 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
5118 {
5119         struct lpfc_sli *psli = &phba->sli;
5120         uint32_t i;
5121
5122         spin_lock_irq(&phba->hbalock);
5123         for (i = 0; i < psli->num_rings; i++)
5124                 __lpfc_dequeue_nport_iocbs(phba, ndlp, &psli->sli3_ring[i],
5125                                                 dequeue_list);
5126         spin_unlock_irq(&phba->hbalock);
5127 }
5128
5129 static void
5130 lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba *phba,
5131                 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
5132 {
5133         struct lpfc_sli_ring *pring;
5134         struct lpfc_queue *qp = NULL;
5135
5136         spin_lock_irq(&phba->hbalock);
5137         list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
5138                 pring = qp->pring;
5139                 if (!pring)
5140                         continue;
5141                 spin_lock(&pring->ring_lock);
5142                 __lpfc_dequeue_nport_iocbs(phba, ndlp, pring, dequeue_list);
5143                 spin_unlock(&pring->ring_lock);
5144         }
5145         spin_unlock_irq(&phba->hbalock);
5146 }
5147
5148 /*
5149  * Free resources / clean up outstanding I/Os
5150  * associated with nlp_rpi in the LPFC_NODELIST entry.
5151  */
5152 static int
5153 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
5154 {
5155         LIST_HEAD(completions);
5156
5157         lpfc_fabric_abort_nport(ndlp);
5158
5159         /*
5160          * Everything that matches on txcmplq will be returned
5161          * by firmware with a no rpi error.
5162          */
5163         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
5164                 if (phba->sli_rev != LPFC_SLI_REV4)
5165                         lpfc_sli3_dequeue_nport_iocbs(phba, ndlp, &completions);
5166                 else
5167                         lpfc_sli4_dequeue_nport_iocbs(phba, ndlp, &completions);
5168         }
5169
5170         /* Cancel all the IOCBs from the completions list */
5171         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5172                               IOERR_SLI_ABORTED);
5173
5174         return 0;
5175 }
5176
5177 /**
5178  * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO
5179  * @phba: Pointer to HBA context object.
5180  * @pmb: Pointer to mailbox object.
5181  *
5182  * This function will issue an ELS LOGO command after completing
5183  * the UNREG_RPI.
5184  **/
5185 static void
5186 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5187 {
5188         struct lpfc_vport  *vport = pmb->vport;
5189         struct lpfc_nodelist *ndlp;
5190
5191         ndlp = (struct lpfc_nodelist *)(pmb->ctx_ndlp);
5192         if (!ndlp)
5193                 return;
5194         lpfc_issue_els_logo(vport, ndlp, 0);
5195
5196         /* Check to see if there are any deferred events to process */
5197         if ((ndlp->nlp_flag & NLP_UNREG_INP) &&
5198             (ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING)) {
5199                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5200                                  "1434 UNREG cmpl deferred logo x%x "
5201                                  "on NPort x%x Data: x%x x%px\n",
5202                                  ndlp->nlp_rpi, ndlp->nlp_DID,
5203                                  ndlp->nlp_defer_did, ndlp);
5204
5205                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5206                 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
5207                 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
5208         } else {
5209                 /* NLP_RELEASE_RPI is only set for SLI4 ports. */
5210                 if (ndlp->nlp_flag & NLP_RELEASE_RPI) {
5211                         lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi);
5212                         spin_lock_irq(&ndlp->lock);
5213                         ndlp->nlp_flag &= ~NLP_RELEASE_RPI;
5214                         ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
5215                         spin_unlock_irq(&ndlp->lock);
5216                 }
5217                 spin_lock_irq(&ndlp->lock);
5218                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5219                 spin_unlock_irq(&ndlp->lock);
5220         }
5221
5222         /* The node has an outstanding reference for the unreg. Now
5223          * that the LOGO action and cleanup are finished, release
5224          * resources.
5225          */
5226         lpfc_nlp_put(ndlp);
5227         mempool_free(pmb, phba->mbox_mem_pool);
5228 }
5229
5230 /*
5231  * Sets the mailbox completion handler to be used for the
5232  * unreg_rpi command. The handler varies based on the state of
5233  * the port and what will be happening to the rpi next.
5234  */
5235 static void
5236 lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba *phba, struct lpfc_vport *vport,
5237         struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox)
5238 {
5239         unsigned long iflags;
5240
5241         /* Driver always gets a reference on the mailbox job
5242          * in support of async jobs.
5243          */
5244         mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
5245         if (!mbox->ctx_ndlp)
5246                 return;
5247
5248         if (ndlp->nlp_flag & NLP_ISSUE_LOGO) {
5249                 mbox->mbox_cmpl = lpfc_nlp_logo_unreg;
5250
5251         } else if (phba->sli_rev == LPFC_SLI_REV4 &&
5252                    (!(vport->load_flag & FC_UNLOADING)) &&
5253                     (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
5254                                       LPFC_SLI_INTF_IF_TYPE_2) &&
5255                     (kref_read(&ndlp->kref) > 0)) {
5256                 mbox->mbox_cmpl = lpfc_sli4_unreg_rpi_cmpl_clr;
5257         } else {
5258                 if (vport->load_flag & FC_UNLOADING) {
5259                         if (phba->sli_rev == LPFC_SLI_REV4) {
5260                                 spin_lock_irqsave(&ndlp->lock, iflags);
5261                                 ndlp->nlp_flag |= NLP_RELEASE_RPI;
5262                                 spin_unlock_irqrestore(&ndlp->lock, iflags);
5263                         }
5264                 }
5265                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5266         }
5267 }
5268
5269 /*
5270  * Free rpi associated with LPFC_NODELIST entry.
5271  * This routine is called from lpfc_freenode(), when we are removing
5272  * a LPFC_NODELIST entry. It is also called if the driver initiates a
5273  * LOGO that completes successfully, and we are waiting to PLOGI back
5274  * to the remote NPort. In addition, it is called after we receive
5275  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
5276  * we are waiting to PLOGI back to the remote NPort.
5277  */
5278 int
5279 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5280 {
5281         struct lpfc_hba *phba = vport->phba;
5282         LPFC_MBOXQ_t    *mbox;
5283         int rc, acc_plogi = 1;
5284         uint16_t rpi;
5285
5286         if (ndlp->nlp_flag & NLP_RPI_REGISTERED ||
5287             ndlp->nlp_flag & NLP_REG_LOGIN_SEND) {
5288                 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
5289                         lpfc_printf_vlog(vport, KERN_INFO,
5290                                          LOG_NODE | LOG_DISCOVERY,
5291                                          "3366 RPI x%x needs to be "
5292                                          "unregistered nlp_flag x%x "
5293                                          "did x%x\n",
5294                                          ndlp->nlp_rpi, ndlp->nlp_flag,
5295                                          ndlp->nlp_DID);
5296
5297                 /* If there is already an UNREG in progress for this ndlp,
5298                  * no need to queue up another one.
5299                  */
5300                 if (ndlp->nlp_flag & NLP_UNREG_INP) {
5301                         lpfc_printf_vlog(vport, KERN_INFO,
5302                                          LOG_NODE | LOG_DISCOVERY,
5303                                          "1436 unreg_rpi SKIP UNREG x%x on "
5304                                          "NPort x%x deferred x%x  flg x%x "
5305                                          "Data: x%px\n",
5306                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5307                                          ndlp->nlp_defer_did,
5308                                          ndlp->nlp_flag, ndlp);
5309                         goto out;
5310                 }
5311
5312                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5313                 if (mbox) {
5314                         /* SLI4 ports require the physical rpi value. */
5315                         rpi = ndlp->nlp_rpi;
5316                         if (phba->sli_rev == LPFC_SLI_REV4)
5317                                 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
5318
5319                         lpfc_unreg_login(phba, vport->vpi, rpi, mbox);
5320                         mbox->vport = vport;
5321                         lpfc_set_unreg_login_mbx_cmpl(phba, vport, ndlp, mbox);
5322                         if (!mbox->ctx_ndlp) {
5323                                 mempool_free(mbox, phba->mbox_mem_pool);
5324                                 return 1;
5325                         }
5326
5327                         if (mbox->mbox_cmpl == lpfc_sli4_unreg_rpi_cmpl_clr)
5328                                 /*
5329                                  * accept PLOGIs after unreg_rpi_cmpl
5330                                  */
5331                                 acc_plogi = 0;
5332                         if (((ndlp->nlp_DID & Fabric_DID_MASK) !=
5333                             Fabric_DID_MASK) &&
5334                             (!(vport->fc_flag & FC_OFFLINE_MODE)))
5335                                 ndlp->nlp_flag |= NLP_UNREG_INP;
5336
5337                         lpfc_printf_vlog(vport, KERN_INFO,
5338                                          LOG_NODE | LOG_DISCOVERY,
5339                                          "1433 unreg_rpi UNREG x%x on "
5340                                          "NPort x%x deferred flg x%x "
5341                                          "Data:x%px\n",
5342                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5343                                          ndlp->nlp_flag, ndlp);
5344
5345                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5346                         if (rc == MBX_NOT_FINISHED) {
5347                                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5348                                 mempool_free(mbox, phba->mbox_mem_pool);
5349                                 acc_plogi = 1;
5350                                 lpfc_nlp_put(ndlp);
5351                         }
5352                 } else {
5353                         lpfc_printf_vlog(vport, KERN_INFO,
5354                                          LOG_NODE | LOG_DISCOVERY,
5355                                          "1444 Failed to allocate mempool "
5356                                          "unreg_rpi UNREG x%x, "
5357                                          "DID x%x, flag x%x, "
5358                                          "ndlp x%px\n",
5359                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5360                                          ndlp->nlp_flag, ndlp);
5361
5362                         /* Because mempool_alloc failed, we
5363                          * will issue a LOGO here and keep the rpi alive if
5364                          * not unloading.
5365                          */
5366                         if (!(vport->load_flag & FC_UNLOADING)) {
5367                                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5368                                 lpfc_issue_els_logo(vport, ndlp, 0);
5369                                 ndlp->nlp_prev_state = ndlp->nlp_state;
5370                                 lpfc_nlp_set_state(vport, ndlp,
5371                                                    NLP_STE_NPR_NODE);
5372                         }
5373
5374                         return 1;
5375                 }
5376                 lpfc_no_rpi(phba, ndlp);
5377 out:
5378                 if (phba->sli_rev != LPFC_SLI_REV4)
5379                         ndlp->nlp_rpi = 0;
5380                 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
5381                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
5382                 if (acc_plogi)
5383                         ndlp->nlp_flag &= ~NLP_LOGO_ACC;
5384                 return 1;
5385         }
5386         ndlp->nlp_flag &= ~NLP_LOGO_ACC;
5387         return 0;
5388 }
5389
5390 /**
5391  * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
5392  * @phba: pointer to lpfc hba data structure.
5393  *
5394  * This routine is invoked to unregister all the currently registered RPIs
5395  * to the HBA.
5396  **/
5397 void
5398 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
5399 {
5400         struct lpfc_vport **vports;
5401         struct lpfc_nodelist *ndlp;
5402         struct Scsi_Host *shost;
5403         int i;
5404
5405         vports = lpfc_create_vport_work_array(phba);
5406         if (!vports) {
5407                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5408                                 "2884 Vport array allocation failed \n");
5409                 return;
5410         }
5411         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5412                 shost = lpfc_shost_from_vport(vports[i]);
5413                 spin_lock_irq(shost->host_lock);
5414                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
5415                         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
5416                                 /* The mempool_alloc might sleep */
5417                                 spin_unlock_irq(shost->host_lock);
5418                                 lpfc_unreg_rpi(vports[i], ndlp);
5419                                 spin_lock_irq(shost->host_lock);
5420                         }
5421                 }
5422                 spin_unlock_irq(shost->host_lock);
5423         }
5424         lpfc_destroy_vport_work_array(phba, vports);
5425 }
5426
5427 void
5428 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
5429 {
5430         struct lpfc_hba  *phba  = vport->phba;
5431         LPFC_MBOXQ_t     *mbox;
5432         int rc;
5433
5434         if (phba->sli_rev == LPFC_SLI_REV4) {
5435                 lpfc_sli4_unreg_all_rpis(vport);
5436                 return;
5437         }
5438
5439         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5440         if (mbox) {
5441                 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT,
5442                                  mbox);
5443                 mbox->vport = vport;
5444                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5445                 mbox->ctx_ndlp = NULL;
5446                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5447                 if (rc != MBX_TIMEOUT)
5448                         mempool_free(mbox, phba->mbox_mem_pool);
5449
5450                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5451                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5452                                          "1836 Could not issue "
5453                                          "unreg_login(all_rpis) status %d\n",
5454                                          rc);
5455         }
5456 }
5457
5458 void
5459 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
5460 {
5461         struct lpfc_hba  *phba  = vport->phba;
5462         LPFC_MBOXQ_t     *mbox;
5463         int rc;
5464
5465         /* Unreg DID is an SLI3 operation. */
5466         if (phba->sli_rev > LPFC_SLI_REV3)
5467                 return;
5468
5469         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5470         if (mbox) {
5471                 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS,
5472                                mbox);
5473                 mbox->vport = vport;
5474                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5475                 mbox->ctx_ndlp = NULL;
5476                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5477                 if (rc != MBX_TIMEOUT)
5478                         mempool_free(mbox, phba->mbox_mem_pool);
5479
5480                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5481                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5482                                          "1815 Could not issue "
5483                                          "unreg_did (default rpis) status %d\n",
5484                                          rc);
5485         }
5486 }
5487
5488 /*
5489  * Free resources associated with LPFC_NODELIST entry
5490  * so it can be freed.
5491  */
5492 static int
5493 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5494 {
5495         struct lpfc_hba  *phba = vport->phba;
5496         LPFC_MBOXQ_t *mb, *nextmb;
5497
5498         /* Cleanup node for NPort <nlp_DID> */
5499         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5500                          "0900 Cleanup node for NPort x%x "
5501                          "Data: x%x x%x x%x\n",
5502                          ndlp->nlp_DID, ndlp->nlp_flag,
5503                          ndlp->nlp_state, ndlp->nlp_rpi);
5504         lpfc_dequeue_node(vport, ndlp);
5505
5506         /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */
5507
5508         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
5509         if ((mb = phba->sli.mbox_active)) {
5510                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5511                    !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5512                    (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
5513                         mb->ctx_ndlp = NULL;
5514                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5515                 }
5516         }
5517
5518         spin_lock_irq(&phba->hbalock);
5519         /* Cleanup REG_LOGIN completions which are not yet processed */
5520         list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
5521                 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) ||
5522                         (mb->mbox_flag & LPFC_MBX_IMED_UNREG) ||
5523                         (ndlp != (struct lpfc_nodelist *)mb->ctx_ndlp))
5524                         continue;
5525
5526                 mb->ctx_ndlp = NULL;
5527                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5528         }
5529
5530         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
5531                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5532                    !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5533                     (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
5534                         list_del(&mb->list);
5535                         lpfc_mbox_rsrc_cleanup(phba, mb, MBOX_THD_LOCKED);
5536
5537                         /* Don't invoke lpfc_nlp_put. The driver is in
5538                          * lpfc_nlp_release context.
5539                          */
5540                 }
5541         }
5542         spin_unlock_irq(&phba->hbalock);
5543
5544         lpfc_els_abort(phba, ndlp);
5545
5546         spin_lock_irq(&ndlp->lock);
5547         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
5548         spin_unlock_irq(&ndlp->lock);
5549
5550         ndlp->nlp_last_elscmd = 0;
5551         del_timer_sync(&ndlp->nlp_delayfunc);
5552
5553         list_del_init(&ndlp->els_retry_evt.evt_listp);
5554         list_del_init(&ndlp->dev_loss_evt.evt_listp);
5555         list_del_init(&ndlp->recovery_evt.evt_listp);
5556         lpfc_cleanup_vports_rrqs(vport, ndlp);
5557
5558         if (phba->sli_rev == LPFC_SLI_REV4)
5559                 ndlp->nlp_flag |= NLP_RELEASE_RPI;
5560
5561         return 0;
5562 }
5563
5564 static int
5565 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
5566               uint32_t did)
5567 {
5568         D_ID mydid, ndlpdid, matchdid;
5569
5570         if (did == Bcast_DID)
5571                 return 0;
5572
5573         /* First check for Direct match */
5574         if (ndlp->nlp_DID == did)
5575                 return 1;
5576
5577         /* Next check for area/domain identically equals 0 match */
5578         mydid.un.word = vport->fc_myDID;
5579         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
5580                 return 0;
5581         }
5582
5583         matchdid.un.word = did;
5584         ndlpdid.un.word = ndlp->nlp_DID;
5585         if (matchdid.un.b.id == ndlpdid.un.b.id) {
5586                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
5587                     (mydid.un.b.area == matchdid.un.b.area)) {
5588                         /* This code is supposed to match the ID
5589                          * for a private loop device that is
5590                          * connect to fl_port. But we need to
5591                          * check that the port did not just go
5592                          * from pt2pt to fabric or we could end
5593                          * up matching ndlp->nlp_DID 000001 to
5594                          * fabric DID 0x20101
5595                          */
5596                         if ((ndlpdid.un.b.domain == 0) &&
5597                             (ndlpdid.un.b.area == 0)) {
5598                                 if (ndlpdid.un.b.id &&
5599                                     vport->phba->fc_topology ==
5600                                     LPFC_TOPOLOGY_LOOP)
5601                                         return 1;
5602                         }
5603                         return 0;
5604                 }
5605
5606                 matchdid.un.word = ndlp->nlp_DID;
5607                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
5608                     (mydid.un.b.area == ndlpdid.un.b.area)) {
5609                         if ((matchdid.un.b.domain == 0) &&
5610                             (matchdid.un.b.area == 0)) {
5611                                 if (matchdid.un.b.id)
5612                                         return 1;
5613                         }
5614                 }
5615         }
5616         return 0;
5617 }
5618
5619 /* Search for a nodelist entry */
5620 static struct lpfc_nodelist *
5621 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5622 {
5623         struct lpfc_nodelist *ndlp;
5624         uint32_t data1;
5625
5626         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5627                 if (lpfc_matchdid(vport, ndlp, did)) {
5628                         data1 = (((uint32_t)ndlp->nlp_state << 24) |
5629                                  ((uint32_t)ndlp->nlp_xri << 16) |
5630                                  ((uint32_t)ndlp->nlp_type << 8)
5631                                  );
5632                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5633                                          "0929 FIND node DID "
5634                                          "Data: x%px x%x x%x x%x x%x x%px\n",
5635                                          ndlp, ndlp->nlp_DID,
5636                                          ndlp->nlp_flag, data1, ndlp->nlp_rpi,
5637                                          ndlp->active_rrqs_xri_bitmap);
5638                         return ndlp;
5639                 }
5640         }
5641
5642         /* FIND node did <did> NOT FOUND */
5643         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5644                          "0932 FIND node did x%x NOT FOUND.\n", did);
5645         return NULL;
5646 }
5647
5648 struct lpfc_nodelist *
5649 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5650 {
5651         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5652         struct lpfc_nodelist *ndlp;
5653         unsigned long iflags;
5654
5655         spin_lock_irqsave(shost->host_lock, iflags);
5656         ndlp = __lpfc_findnode_did(vport, did);
5657         spin_unlock_irqrestore(shost->host_lock, iflags);
5658         return ndlp;
5659 }
5660
5661 struct lpfc_nodelist *
5662 lpfc_findnode_mapped(struct lpfc_vport *vport)
5663 {
5664         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5665         struct lpfc_nodelist *ndlp;
5666         uint32_t data1;
5667         unsigned long iflags;
5668
5669         spin_lock_irqsave(shost->host_lock, iflags);
5670
5671         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5672                 if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE ||
5673                     ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
5674                         data1 = (((uint32_t)ndlp->nlp_state << 24) |
5675                                  ((uint32_t)ndlp->nlp_xri << 16) |
5676                                  ((uint32_t)ndlp->nlp_type << 8) |
5677                                  ((uint32_t)ndlp->nlp_rpi & 0xff));
5678                         spin_unlock_irqrestore(shost->host_lock, iflags);
5679                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5680                                          "2025 FIND node DID "
5681                                          "Data: x%px x%x x%x x%x x%px\n",
5682                                          ndlp, ndlp->nlp_DID,
5683                                          ndlp->nlp_flag, data1,
5684                                          ndlp->active_rrqs_xri_bitmap);
5685                         return ndlp;
5686                 }
5687         }
5688         spin_unlock_irqrestore(shost->host_lock, iflags);
5689
5690         /* FIND node did <did> NOT FOUND */
5691         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5692                          "2026 FIND mapped did NOT FOUND.\n");
5693         return NULL;
5694 }
5695
5696 struct lpfc_nodelist *
5697 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
5698 {
5699         struct lpfc_nodelist *ndlp;
5700
5701         ndlp = lpfc_findnode_did(vport, did);
5702         if (!ndlp) {
5703                 if (vport->phba->nvmet_support)
5704                         return NULL;
5705                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
5706                     lpfc_rscn_payload_check(vport, did) == 0)
5707                         return NULL;
5708                 ndlp = lpfc_nlp_init(vport, did);
5709                 if (!ndlp)
5710                         return NULL;
5711                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5712
5713                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5714                                  "6453 Setup New Node 2B_DISC x%x "
5715                                  "Data:x%x x%x x%x\n",
5716                                  ndlp->nlp_DID, ndlp->nlp_flag,
5717                                  ndlp->nlp_state, vport->fc_flag);
5718
5719                 spin_lock_irq(&ndlp->lock);
5720                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5721                 spin_unlock_irq(&ndlp->lock);
5722                 return ndlp;
5723         }
5724
5725         /* The NVME Target does not want to actively manage an rport.
5726          * The goal is to allow the target to reset its state and clear
5727          * pending IO in preparation for the initiator to recover.
5728          */
5729         if ((vport->fc_flag & FC_RSCN_MODE) &&
5730             !(vport->fc_flag & FC_NDISC_ACTIVE)) {
5731                 if (lpfc_rscn_payload_check(vport, did)) {
5732
5733                         /* Since this node is marked for discovery,
5734                          * delay timeout is not needed.
5735                          */
5736                         lpfc_cancel_retry_delay_tmo(vport, ndlp);
5737
5738                         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5739                                          "6455 Setup RSCN Node 2B_DISC x%x "
5740                                          "Data:x%x x%x x%x\n",
5741                                          ndlp->nlp_DID, ndlp->nlp_flag,
5742                                          ndlp->nlp_state, vport->fc_flag);
5743
5744                         /* NVME Target mode waits until rport is known to be
5745                          * impacted by the RSCN before it transitions.  No
5746                          * active management - just go to NPR provided the
5747                          * node had a valid login.
5748                          */
5749                         if (vport->phba->nvmet_support)
5750                                 return ndlp;
5751
5752                         /* If we've already received a PLOGI from this NPort
5753                          * we don't need to try to discover it again.
5754                          */
5755                         if (ndlp->nlp_flag & NLP_RCV_PLOGI &&
5756                             !(ndlp->nlp_type &
5757                              (NLP_FCP_TARGET | NLP_NVME_TARGET)))
5758                                 return NULL;
5759
5760                         lpfc_disc_state_machine(vport, ndlp, NULL,
5761                                                 NLP_EVT_DEVICE_RECOVERY);
5762
5763                         spin_lock_irq(&ndlp->lock);
5764                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5765                         spin_unlock_irq(&ndlp->lock);
5766                 } else {
5767                         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5768                                          "6456 Skip Setup RSCN Node x%x "
5769                                          "Data:x%x x%x x%x\n",
5770                                          ndlp->nlp_DID, ndlp->nlp_flag,
5771                                          ndlp->nlp_state, vport->fc_flag);
5772                         ndlp = NULL;
5773                 }
5774         } else {
5775                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5776                                  "6457 Setup Active Node 2B_DISC x%x "
5777                                  "Data:x%x x%x x%x\n",
5778                                  ndlp->nlp_DID, ndlp->nlp_flag,
5779                                  ndlp->nlp_state, vport->fc_flag);
5780
5781                 /* If the initiator received a PLOGI from this NPort or if the
5782                  * initiator is already in the process of discovery on it,
5783                  * there's no need to try to discover it again.
5784                  */
5785                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
5786                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5787                     (!vport->phba->nvmet_support &&
5788                      ndlp->nlp_flag & NLP_RCV_PLOGI))
5789                         return NULL;
5790
5791                 if (vport->phba->nvmet_support)
5792                         return ndlp;
5793
5794                 /* Moving to NPR state clears unsolicited flags and
5795                  * allows for rediscovery
5796                  */
5797                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5798
5799                 spin_lock_irq(&ndlp->lock);
5800                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5801                 spin_unlock_irq(&ndlp->lock);
5802         }
5803         return ndlp;
5804 }
5805
5806 /* Build a list of nodes to discover based on the loopmap */
5807 void
5808 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
5809 {
5810         struct lpfc_hba  *phba = vport->phba;
5811         int j;
5812         uint32_t alpa, index;
5813
5814         if (!lpfc_is_link_up(phba))
5815                 return;
5816
5817         if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
5818                 return;
5819
5820         /* Check for loop map present or not */
5821         if (phba->alpa_map[0]) {
5822                 for (j = 1; j <= phba->alpa_map[0]; j++) {
5823                         alpa = phba->alpa_map[j];
5824                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
5825                                 continue;
5826                         lpfc_setup_disc_node(vport, alpa);
5827                 }
5828         } else {
5829                 /* No alpamap, so try all alpa's */
5830                 for (j = 0; j < FC_MAXLOOP; j++) {
5831                         /* If cfg_scan_down is set, start from highest
5832                          * ALPA (0xef) to lowest (0x1).
5833                          */
5834                         if (vport->cfg_scan_down)
5835                                 index = j;
5836                         else
5837                                 index = FC_MAXLOOP - j - 1;
5838                         alpa = lpfcAlpaArray[index];
5839                         if ((vport->fc_myDID & 0xff) == alpa)
5840                                 continue;
5841                         lpfc_setup_disc_node(vport, alpa);
5842                 }
5843         }
5844         return;
5845 }
5846
5847 /* SLI3 only */
5848 void
5849 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
5850 {
5851         LPFC_MBOXQ_t *mbox;
5852         struct lpfc_sli *psli = &phba->sli;
5853         struct lpfc_sli_ring *extra_ring = &psli->sli3_ring[LPFC_EXTRA_RING];
5854         struct lpfc_sli_ring *fcp_ring   = &psli->sli3_ring[LPFC_FCP_RING];
5855         int  rc;
5856
5857         /*
5858          * if it's not a physical port or if we already send
5859          * clear_la then don't send it.
5860          */
5861         if ((phba->link_state >= LPFC_CLEAR_LA) ||
5862             (vport->port_type != LPFC_PHYSICAL_PORT) ||
5863                 (phba->sli_rev == LPFC_SLI_REV4))
5864                 return;
5865
5866                         /* Link up discovery */
5867         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
5868                 phba->link_state = LPFC_CLEAR_LA;
5869                 lpfc_clear_la(phba, mbox);
5870                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
5871                 mbox->vport = vport;
5872                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5873                 if (rc == MBX_NOT_FINISHED) {
5874                         mempool_free(mbox, phba->mbox_mem_pool);
5875                         lpfc_disc_flush_list(vport);
5876                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5877                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5878                         phba->link_state = LPFC_HBA_ERROR;
5879                 }
5880         }
5881 }
5882
5883 /* Reg_vpi to tell firmware to resume normal operations */
5884 void
5885 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
5886 {
5887         LPFC_MBOXQ_t *regvpimbox;
5888
5889         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5890         if (regvpimbox) {
5891                 lpfc_reg_vpi(vport, regvpimbox);
5892                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
5893                 regvpimbox->vport = vport;
5894                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
5895                                         == MBX_NOT_FINISHED) {
5896                         mempool_free(regvpimbox, phba->mbox_mem_pool);
5897                 }
5898         }
5899 }
5900
5901 /* Start Link up / RSCN discovery on NPR nodes */
5902 void
5903 lpfc_disc_start(struct lpfc_vport *vport)
5904 {
5905         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5906         struct lpfc_hba  *phba = vport->phba;
5907         uint32_t num_sent;
5908         uint32_t clear_la_pending;
5909
5910         if (!lpfc_is_link_up(phba)) {
5911                 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
5912                                  "3315 Link is not up %x\n",
5913                                  phba->link_state);
5914                 return;
5915         }
5916
5917         if (phba->link_state == LPFC_CLEAR_LA)
5918                 clear_la_pending = 1;
5919         else
5920                 clear_la_pending = 0;
5921
5922         if (vport->port_state < LPFC_VPORT_READY)
5923                 vport->port_state = LPFC_DISC_AUTH;
5924
5925         lpfc_set_disctmo(vport);
5926
5927         vport->fc_prevDID = vport->fc_myDID;
5928         vport->num_disc_nodes = 0;
5929
5930         /* Start Discovery state <hba_state> */
5931         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5932                          "0202 Start Discovery port state x%x "
5933                          "flg x%x Data: x%x x%x x%x\n",
5934                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
5935                          vport->fc_adisc_cnt, vport->fc_npr_cnt);
5936
5937         /* First do ADISCs - if any */
5938         num_sent = lpfc_els_disc_adisc(vport);
5939
5940         if (num_sent)
5941                 return;
5942
5943         /* Register the VPI for SLI3, NPIV only. */
5944         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
5945             !(vport->fc_flag & FC_PT2PT) &&
5946             !(vport->fc_flag & FC_RSCN_MODE) &&
5947             (phba->sli_rev < LPFC_SLI_REV4)) {
5948                 lpfc_issue_clear_la(phba, vport);
5949                 lpfc_issue_reg_vpi(phba, vport);
5950                 return;
5951         }
5952
5953         /*
5954          * For SLI2, we need to set port_state to READY and continue
5955          * discovery.
5956          */
5957         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
5958                 /* If we get here, there is nothing to ADISC */
5959                 lpfc_issue_clear_la(phba, vport);
5960
5961                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
5962                         vport->num_disc_nodes = 0;
5963                         /* go thru NPR nodes and issue ELS PLOGIs */
5964                         if (vport->fc_npr_cnt)
5965                                 lpfc_els_disc_plogi(vport);
5966
5967                         if (!vport->num_disc_nodes) {
5968                                 spin_lock_irq(shost->host_lock);
5969                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
5970                                 spin_unlock_irq(shost->host_lock);
5971                                 lpfc_can_disctmo(vport);
5972                         }
5973                 }
5974                 vport->port_state = LPFC_VPORT_READY;
5975         } else {
5976                 /* Next do PLOGIs - if any */
5977                 num_sent = lpfc_els_disc_plogi(vport);
5978
5979                 if (num_sent)
5980                         return;
5981
5982                 if (vport->fc_flag & FC_RSCN_MODE) {
5983                         /* Check to see if more RSCNs came in while we
5984                          * were processing this one.
5985                          */
5986                         if ((vport->fc_rscn_id_cnt == 0) &&
5987                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
5988                                 spin_lock_irq(shost->host_lock);
5989                                 vport->fc_flag &= ~FC_RSCN_MODE;
5990                                 spin_unlock_irq(shost->host_lock);
5991                                 lpfc_can_disctmo(vport);
5992                         } else
5993                                 lpfc_els_handle_rscn(vport);
5994                 }
5995         }
5996         return;
5997 }
5998
5999 /*
6000  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
6001  *  ring the match the sppecified nodelist.
6002  */
6003 static void
6004 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
6005 {
6006         LIST_HEAD(completions);
6007         struct lpfc_iocbq    *iocb, *next_iocb;
6008         struct lpfc_sli_ring *pring;
6009         u32 ulp_command;
6010
6011         pring = lpfc_phba_elsring(phba);
6012         if (unlikely(!pring))
6013                 return;
6014
6015         /* Error matching iocb on txq or txcmplq
6016          * First check the txq.
6017          */
6018         spin_lock_irq(&phba->hbalock);
6019         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
6020                 if (iocb->ndlp != ndlp)
6021                         continue;
6022
6023                 ulp_command = get_job_cmnd(phba, iocb);
6024
6025                 if (ulp_command == CMD_ELS_REQUEST64_CR ||
6026                     ulp_command == CMD_XMIT_ELS_RSP64_CX) {
6027
6028                         list_move_tail(&iocb->list, &completions);
6029                 }
6030         }
6031
6032         /* Next check the txcmplq */
6033         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
6034                 if (iocb->ndlp != ndlp)
6035                         continue;
6036
6037                 ulp_command = get_job_cmnd(phba, iocb);
6038
6039                 if (ulp_command == CMD_ELS_REQUEST64_CR ||
6040                     ulp_command == CMD_XMIT_ELS_RSP64_CX) {
6041                         lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL);
6042                 }
6043         }
6044         spin_unlock_irq(&phba->hbalock);
6045
6046         /* Make sure HBA is alive */
6047         lpfc_issue_hb_tmo(phba);
6048
6049         /* Cancel all the IOCBs from the completions list */
6050         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
6051                               IOERR_SLI_ABORTED);
6052 }
6053
6054 static void
6055 lpfc_disc_flush_list(struct lpfc_vport *vport)
6056 {
6057         struct lpfc_nodelist *ndlp, *next_ndlp;
6058         struct lpfc_hba *phba = vport->phba;
6059
6060         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
6061                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6062                                          nlp_listp) {
6063                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
6064                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
6065                                 lpfc_free_tx(phba, ndlp);
6066                         }
6067                 }
6068         }
6069 }
6070
6071 /*
6072  * lpfc_notify_xport_npr - notifies xport of node disappearance
6073  * @vport: Pointer to Virtual Port object.
6074  *
6075  * Transitions all ndlps to NPR state.  When lpfc_nlp_set_state
6076  * calls lpfc_nlp_state_cleanup, the ndlp->rport is unregistered
6077  * and transport notified that the node is gone.
6078  * Return Code:
6079  *      none
6080  */
6081 static void
6082 lpfc_notify_xport_npr(struct lpfc_vport *vport)
6083 {
6084         struct lpfc_nodelist *ndlp, *next_ndlp;
6085
6086         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6087                                  nlp_listp) {
6088                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
6089         }
6090 }
6091 void
6092 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
6093 {
6094         lpfc_els_flush_rscn(vport);
6095         lpfc_els_flush_cmd(vport);
6096         lpfc_disc_flush_list(vport);
6097         if (pci_channel_offline(vport->phba->pcidev))
6098                 lpfc_notify_xport_npr(vport);
6099 }
6100
6101 /*****************************************************************************/
6102 /*
6103  * NAME:     lpfc_disc_timeout
6104  *
6105  * FUNCTION: Fibre Channel driver discovery timeout routine.
6106  *
6107  * EXECUTION ENVIRONMENT: interrupt only
6108  *
6109  * CALLED FROM:
6110  *      Timer function
6111  *
6112  * RETURNS:
6113  *      none
6114  */
6115 /*****************************************************************************/
6116 void
6117 lpfc_disc_timeout(struct timer_list *t)
6118 {
6119         struct lpfc_vport *vport = from_timer(vport, t, fc_disctmo);
6120         struct lpfc_hba   *phba = vport->phba;
6121         uint32_t tmo_posted;
6122         unsigned long flags = 0;
6123
6124         if (unlikely(!phba))
6125                 return;
6126
6127         spin_lock_irqsave(&vport->work_port_lock, flags);
6128         tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
6129         if (!tmo_posted)
6130                 vport->work_port_events |= WORKER_DISC_TMO;
6131         spin_unlock_irqrestore(&vport->work_port_lock, flags);
6132
6133         if (!tmo_posted)
6134                 lpfc_worker_wake_up(phba);
6135         return;
6136 }
6137
6138 static void
6139 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
6140 {
6141         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6142         struct lpfc_hba  *phba = vport->phba;
6143         struct lpfc_sli  *psli = &phba->sli;
6144         struct lpfc_nodelist *ndlp, *next_ndlp;
6145         LPFC_MBOXQ_t *initlinkmbox;
6146         int rc, clrlaerr = 0;
6147
6148         if (!(vport->fc_flag & FC_DISC_TMO))
6149                 return;
6150
6151         spin_lock_irq(shost->host_lock);
6152         vport->fc_flag &= ~FC_DISC_TMO;
6153         spin_unlock_irq(shost->host_lock);
6154
6155         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6156                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
6157                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
6158
6159         switch (vport->port_state) {
6160
6161         case LPFC_LOCAL_CFG_LINK:
6162                 /*
6163                  * port_state is identically  LPFC_LOCAL_CFG_LINK while
6164                  * waiting for FAN timeout
6165                  */
6166                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
6167                                  "0221 FAN timeout\n");
6168
6169                 /* Start discovery by sending FLOGI, clean up old rpis */
6170                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6171                                          nlp_listp) {
6172                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
6173                                 continue;
6174                         if (ndlp->nlp_type & NLP_FABRIC) {
6175                                 /* Clean up the ndlp on Fabric connections */
6176                                 lpfc_drop_node(vport, ndlp);
6177
6178                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
6179                                 /* Fail outstanding IO now since device
6180                                  * is marked for PLOGI.
6181                                  */
6182                                 lpfc_unreg_rpi(vport, ndlp);
6183                         }
6184                 }
6185                 if (vport->port_state != LPFC_FLOGI) {
6186                         if (phba->sli_rev <= LPFC_SLI_REV3)
6187                                 lpfc_initial_flogi(vport);
6188                         else
6189                                 lpfc_issue_init_vfi(vport);
6190                         return;
6191                 }
6192                 break;
6193
6194         case LPFC_FDISC:
6195         case LPFC_FLOGI:
6196         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
6197                 /* Initial FLOGI timeout */
6198                 lpfc_printf_vlog(vport, KERN_ERR,
6199                                  LOG_TRACE_EVENT,
6200                                  "0222 Initial %s timeout\n",
6201                                  vport->vpi ? "FDISC" : "FLOGI");
6202
6203                 /* Assume no Fabric and go on with discovery.
6204                  * Check for outstanding ELS FLOGI to abort.
6205                  */
6206
6207                 /* FLOGI failed, so just use loop map to make discovery list */
6208                 lpfc_disc_list_loopmap(vport);
6209
6210                 /* Start discovery */
6211                 lpfc_disc_start(vport);
6212                 break;
6213
6214         case LPFC_FABRIC_CFG_LINK:
6215         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
6216            NameServer login */
6217                 lpfc_printf_vlog(vport, KERN_ERR,
6218                                  LOG_TRACE_EVENT,
6219                                  "0223 Timeout while waiting for "
6220                                  "NameServer login\n");
6221                 /* Next look for NameServer ndlp */
6222                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
6223                 if (ndlp)
6224                         lpfc_els_abort(phba, ndlp);
6225
6226                 /* ReStart discovery */
6227                 goto restart_disc;
6228
6229         case LPFC_NS_QRY:
6230         /* Check for wait for NameServer Rsp timeout */
6231                 lpfc_printf_vlog(vport, KERN_ERR,
6232                                  LOG_TRACE_EVENT,
6233                                  "0224 NameServer Query timeout "
6234                                  "Data: x%x x%x\n",
6235                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
6236
6237                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
6238                         /* Try it one more time */
6239                         vport->fc_ns_retry++;
6240                         vport->gidft_inp = 0;
6241                         rc = lpfc_issue_gidft(vport);
6242                         if (rc == 0)
6243                                 break;
6244                 }
6245                 vport->fc_ns_retry = 0;
6246
6247 restart_disc:
6248                 /*
6249                  * Discovery is over.
6250                  * set port_state to PORT_READY if SLI2.
6251                  * cmpl_reg_vpi will set port_state to READY for SLI3.
6252                  */
6253                 if (phba->sli_rev < LPFC_SLI_REV4) {
6254                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
6255                                 lpfc_issue_reg_vpi(phba, vport);
6256                         else  {
6257                                 lpfc_issue_clear_la(phba, vport);
6258                                 vport->port_state = LPFC_VPORT_READY;
6259                         }
6260                 }
6261
6262                 /* Setup and issue mailbox INITIALIZE LINK command */
6263                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6264                 if (!initlinkmbox) {
6265                         lpfc_printf_vlog(vport, KERN_ERR,
6266                                          LOG_TRACE_EVENT,
6267                                          "0206 Device Discovery "
6268                                          "completion error\n");
6269                         phba->link_state = LPFC_HBA_ERROR;
6270                         break;
6271                 }
6272
6273                 lpfc_linkdown(phba);
6274                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
6275                                phba->cfg_link_speed);
6276                 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
6277                 initlinkmbox->vport = vport;
6278                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
6279                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
6280                 lpfc_set_loopback_flag(phba);
6281                 if (rc == MBX_NOT_FINISHED)
6282                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
6283
6284                 break;
6285
6286         case LPFC_DISC_AUTH:
6287         /* Node Authentication timeout */
6288                 lpfc_printf_vlog(vport, KERN_ERR,
6289                                  LOG_TRACE_EVENT,
6290                                  "0227 Node Authentication timeout\n");
6291                 lpfc_disc_flush_list(vport);
6292
6293                 /*
6294                  * set port_state to PORT_READY if SLI2.
6295                  * cmpl_reg_vpi will set port_state to READY for SLI3.
6296                  */
6297                 if (phba->sli_rev < LPFC_SLI_REV4) {
6298                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
6299                                 lpfc_issue_reg_vpi(phba, vport);
6300                         else  { /* NPIV Not enabled */
6301                                 lpfc_issue_clear_la(phba, vport);
6302                                 vport->port_state = LPFC_VPORT_READY;
6303                         }
6304                 }
6305                 break;
6306
6307         case LPFC_VPORT_READY:
6308                 if (vport->fc_flag & FC_RSCN_MODE) {
6309                         lpfc_printf_vlog(vport, KERN_ERR,
6310                                          LOG_TRACE_EVENT,
6311                                          "0231 RSCN timeout Data: x%x "
6312                                          "x%x x%x x%x\n",
6313                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY,
6314                                          vport->port_state, vport->gidft_inp);
6315
6316                         /* Cleanup any outstanding ELS commands */
6317                         lpfc_els_flush_cmd(vport);
6318
6319                         lpfc_els_flush_rscn(vport);
6320                         lpfc_disc_flush_list(vport);
6321                 }
6322                 break;
6323
6324         default:
6325                 lpfc_printf_vlog(vport, KERN_ERR,
6326                                  LOG_TRACE_EVENT,
6327                                  "0273 Unexpected discovery timeout, "
6328                                  "vport State x%x\n", vport->port_state);
6329                 break;
6330         }
6331
6332         switch (phba->link_state) {
6333         case LPFC_CLEAR_LA:
6334                                 /* CLEAR LA timeout */
6335                 lpfc_printf_vlog(vport, KERN_ERR,
6336                                  LOG_TRACE_EVENT,
6337                                  "0228 CLEAR LA timeout\n");
6338                 clrlaerr = 1;
6339                 break;
6340
6341         case LPFC_LINK_UP:
6342                 lpfc_issue_clear_la(phba, vport);
6343                 fallthrough;
6344         case LPFC_LINK_UNKNOWN:
6345         case LPFC_WARM_START:
6346         case LPFC_INIT_START:
6347         case LPFC_INIT_MBX_CMDS:
6348         case LPFC_LINK_DOWN:
6349         case LPFC_HBA_ERROR:
6350                 lpfc_printf_vlog(vport, KERN_ERR,
6351                                  LOG_TRACE_EVENT,
6352                                  "0230 Unexpected timeout, hba link "
6353                                  "state x%x\n", phba->link_state);
6354                 clrlaerr = 1;
6355                 break;
6356
6357         case LPFC_HBA_READY:
6358                 break;
6359         }
6360
6361         if (clrlaerr) {
6362                 lpfc_disc_flush_list(vport);
6363                 if (phba->sli_rev != LPFC_SLI_REV4) {
6364                         psli->sli3_ring[(LPFC_EXTRA_RING)].flag &=
6365                                 ~LPFC_STOP_IOCB_EVENT;
6366                         psli->sli3_ring[LPFC_FCP_RING].flag &=
6367                                 ~LPFC_STOP_IOCB_EVENT;
6368                 }
6369                 vport->port_state = LPFC_VPORT_READY;
6370         }
6371         return;
6372 }
6373
6374 /*
6375  * This routine handles processing a NameServer REG_LOGIN mailbox
6376  * command upon completion. It is setup in the LPFC_MBOXQ
6377  * as the completion routine when the command is
6378  * handed off to the SLI layer.
6379  */
6380 void
6381 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
6382 {
6383         MAILBOX_t *mb = &pmb->u.mb;
6384         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
6385         struct lpfc_vport    *vport = pmb->vport;
6386
6387         pmb->ctx_ndlp = NULL;
6388
6389         if (phba->sli_rev < LPFC_SLI_REV4)
6390                 ndlp->nlp_rpi = mb->un.varWords[0];
6391         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
6392         ndlp->nlp_type |= NLP_FABRIC;
6393         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
6394         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
6395                          "0004 rpi:%x DID:%x flg:%x %d x%px\n",
6396                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
6397                          kref_read(&ndlp->kref),
6398                          ndlp);
6399         /*
6400          * Start issuing Fabric-Device Management Interface (FDMI) command to
6401          * 0xfffffa (FDMI well known port).
6402          * DHBA -> DPRT -> RHBA -> RPA  (physical port)
6403          * DPRT -> RPRT (vports)
6404          */
6405         if (vport->port_type == LPFC_PHYSICAL_PORT) {
6406                 phba->link_flag &= ~LS_CT_VEN_RPA; /* For extra Vendor RPA */
6407                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA, 0);
6408         } else {
6409                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DPRT, 0);
6410         }
6411
6412
6413         /* decrement the node reference count held for this callback
6414          * function.
6415          */
6416         lpfc_nlp_put(ndlp);
6417         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
6418         return;
6419 }
6420
6421 static int
6422 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
6423 {
6424         uint16_t *rpi = param;
6425
6426         return ndlp->nlp_rpi == *rpi;
6427 }
6428
6429 static int
6430 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
6431 {
6432         return memcmp(&ndlp->nlp_portname, param,
6433                       sizeof(ndlp->nlp_portname)) == 0;
6434 }
6435
6436 static struct lpfc_nodelist *
6437 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
6438 {
6439         struct lpfc_nodelist *ndlp;
6440
6441         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
6442                 if (filter(ndlp, param)) {
6443                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6444                                          "3185 FIND node filter %ps DID "
6445                                          "ndlp x%px did x%x flg x%x st x%x "
6446                                          "xri x%x type x%x rpi x%x\n",
6447                                          filter, ndlp, ndlp->nlp_DID,
6448                                          ndlp->nlp_flag, ndlp->nlp_state,
6449                                          ndlp->nlp_xri, ndlp->nlp_type,
6450                                          ndlp->nlp_rpi);
6451                         return ndlp;
6452                 }
6453         }
6454         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6455                          "3186 FIND node filter %ps NOT FOUND.\n", filter);
6456         return NULL;
6457 }
6458
6459 /*
6460  * This routine looks up the ndlp lists for the given RPI. If rpi found it
6461  * returns the node list element pointer else return NULL.
6462  */
6463 struct lpfc_nodelist *
6464 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6465 {
6466         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
6467 }
6468
6469 /*
6470  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
6471  * returns the node element list pointer else return NULL.
6472  */
6473 struct lpfc_nodelist *
6474 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
6475 {
6476         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6477         struct lpfc_nodelist *ndlp;
6478
6479         spin_lock_irq(shost->host_lock);
6480         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
6481         spin_unlock_irq(shost->host_lock);
6482         return ndlp;
6483 }
6484
6485 /*
6486  * This routine looks up the ndlp lists for the given RPI. If the rpi
6487  * is found, the routine returns the node element list pointer else
6488  * return NULL.
6489  */
6490 struct lpfc_nodelist *
6491 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6492 {
6493         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6494         struct lpfc_nodelist *ndlp;
6495         unsigned long flags;
6496
6497         spin_lock_irqsave(shost->host_lock, flags);
6498         ndlp = __lpfc_findnode_rpi(vport, rpi);
6499         spin_unlock_irqrestore(shost->host_lock, flags);
6500         return ndlp;
6501 }
6502
6503 /**
6504  * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
6505  * @phba: pointer to lpfc hba data structure.
6506  * @vpi: the physical host virtual N_Port identifier.
6507  *
6508  * This routine finds a vport on a HBA (referred by @phba) through a
6509  * @vpi. The function walks the HBA's vport list and returns the address
6510  * of the vport with the matching @vpi.
6511  *
6512  * Return code
6513  *    NULL - No vport with the matching @vpi found
6514  *    Otherwise - Address to the vport with the matching @vpi.
6515  **/
6516 struct lpfc_vport *
6517 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
6518 {
6519         struct lpfc_vport *vport;
6520         unsigned long flags;
6521         int i = 0;
6522
6523         /* The physical ports are always vpi 0 - translate is unnecessary. */
6524         if (vpi > 0) {
6525                 /*
6526                  * Translate the physical vpi to the logical vpi.  The
6527                  * vport stores the logical vpi.
6528                  */
6529                 for (i = 0; i <= phba->max_vpi; i++) {
6530                         if (vpi == phba->vpi_ids[i])
6531                                 break;
6532                 }
6533
6534                 if (i > phba->max_vpi) {
6535                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6536                                         "2936 Could not find Vport mapped "
6537                                         "to vpi %d\n", vpi);
6538                         return NULL;
6539                 }
6540         }
6541
6542         spin_lock_irqsave(&phba->port_list_lock, flags);
6543         list_for_each_entry(vport, &phba->port_list, listentry) {
6544                 if (vport->vpi == i) {
6545                         spin_unlock_irqrestore(&phba->port_list_lock, flags);
6546                         return vport;
6547                 }
6548         }
6549         spin_unlock_irqrestore(&phba->port_list_lock, flags);
6550         return NULL;
6551 }
6552
6553 struct lpfc_nodelist *
6554 lpfc_nlp_init(struct lpfc_vport *vport, uint32_t did)
6555 {
6556         struct lpfc_nodelist *ndlp;
6557         int rpi = LPFC_RPI_ALLOC_ERROR;
6558
6559         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6560                 rpi = lpfc_sli4_alloc_rpi(vport->phba);
6561                 if (rpi == LPFC_RPI_ALLOC_ERROR)
6562                         return NULL;
6563         }
6564
6565         ndlp = mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
6566         if (!ndlp) {
6567                 if (vport->phba->sli_rev == LPFC_SLI_REV4)
6568                         lpfc_sli4_free_rpi(vport->phba, rpi);
6569                 return NULL;
6570         }
6571
6572         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
6573
6574         spin_lock_init(&ndlp->lock);
6575
6576         lpfc_initialize_node(vport, ndlp, did);
6577         INIT_LIST_HEAD(&ndlp->nlp_listp);
6578         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6579                 ndlp->nlp_rpi = rpi;
6580                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
6581                                  "0007 Init New ndlp x%px, rpi:x%x DID:%x "
6582                                  "flg:x%x refcnt:%d\n",
6583                                  ndlp, ndlp->nlp_rpi, ndlp->nlp_DID,
6584                                  ndlp->nlp_flag, kref_read(&ndlp->kref));
6585
6586                 ndlp->active_rrqs_xri_bitmap =
6587                                 mempool_alloc(vport->phba->active_rrq_pool,
6588                                               GFP_KERNEL);
6589                 if (ndlp->active_rrqs_xri_bitmap)
6590                         memset(ndlp->active_rrqs_xri_bitmap, 0,
6591                                ndlp->phba->cfg_rrq_xri_bitmap_sz);
6592         }
6593
6594
6595
6596         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
6597                 "node init:       did:x%x",
6598                 ndlp->nlp_DID, 0, 0);
6599
6600         return ndlp;
6601 }
6602
6603 /* This routine releases all resources associated with a specifc NPort's ndlp
6604  * and mempool_free's the nodelist.
6605  */
6606 static void
6607 lpfc_nlp_release(struct kref *kref)
6608 {
6609         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
6610                                                   kref);
6611         struct lpfc_vport *vport = ndlp->vport;
6612
6613         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6614                 "node release:    did:x%x flg:x%x type:x%x",
6615                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
6616
6617         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6618                          "0279 %s: ndlp: x%px did %x refcnt:%d rpi:%x\n",
6619                          __func__, ndlp, ndlp->nlp_DID,
6620                          kref_read(&ndlp->kref), ndlp->nlp_rpi);
6621
6622         /* remove ndlp from action. */
6623         lpfc_cancel_retry_delay_tmo(vport, ndlp);
6624         lpfc_cleanup_node(vport, ndlp);
6625
6626         /* Not all ELS transactions have registered the RPI with the port.
6627          * In these cases the rpi usage is temporary and the node is
6628          * released when the WQE is completed.  Catch this case to free the
6629          * RPI to the pool.  Because this node is in the release path, a lock
6630          * is unnecessary.  All references are gone and the node has been
6631          * dequeued.
6632          */
6633         if (ndlp->nlp_flag & NLP_RELEASE_RPI) {
6634                 if (ndlp->nlp_rpi != LPFC_RPI_ALLOC_ERROR &&
6635                     !(ndlp->nlp_flag & (NLP_RPI_REGISTERED | NLP_UNREG_INP))) {
6636                         lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi);
6637                         ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
6638                 }
6639         }
6640
6641         /* The node is not freed back to memory, it is released to a pool so
6642          * the node fields need to be cleaned up.
6643          */
6644         ndlp->vport = NULL;
6645         ndlp->nlp_state = NLP_STE_FREED_NODE;
6646         ndlp->nlp_flag = 0;
6647         ndlp->fc4_xpt_flags = 0;
6648
6649         /* free ndlp memory for final ndlp release */
6650         if (ndlp->phba->sli_rev == LPFC_SLI_REV4)
6651                 mempool_free(ndlp->active_rrqs_xri_bitmap,
6652                                 ndlp->phba->active_rrq_pool);
6653         mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
6654 }
6655
6656 /* This routine bumps the reference count for a ndlp structure to ensure
6657  * that one discovery thread won't free a ndlp while another discovery thread
6658  * is using it.
6659  */
6660 struct lpfc_nodelist *
6661 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
6662 {
6663         unsigned long flags;
6664
6665         if (ndlp) {
6666                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6667                         "node get:        did:x%x flg:x%x refcnt:x%x",
6668                         ndlp->nlp_DID, ndlp->nlp_flag,
6669                         kref_read(&ndlp->kref));
6670
6671                 /* The check of ndlp usage to prevent incrementing the
6672                  * ndlp reference count that is in the process of being
6673                  * released.
6674                  */
6675                 spin_lock_irqsave(&ndlp->lock, flags);
6676                 if (!kref_get_unless_zero(&ndlp->kref)) {
6677                         spin_unlock_irqrestore(&ndlp->lock, flags);
6678                         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
6679                                 "0276 %s: ndlp:x%px refcnt:%d\n",
6680                                 __func__, (void *)ndlp, kref_read(&ndlp->kref));
6681                         return NULL;
6682                 }
6683                 spin_unlock_irqrestore(&ndlp->lock, flags);
6684         } else {
6685                 WARN_ONCE(!ndlp, "**** %s, get ref on NULL ndlp!", __func__);
6686         }
6687
6688         return ndlp;
6689 }
6690
6691 /* This routine decrements the reference count for a ndlp structure. If the
6692  * count goes to 0, this indicates the associated nodelist should be freed.
6693  */
6694 int
6695 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
6696 {
6697         if (ndlp) {
6698                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6699                                 "node put:        did:x%x flg:x%x refcnt:x%x",
6700                                 ndlp->nlp_DID, ndlp->nlp_flag,
6701                                 kref_read(&ndlp->kref));
6702         } else {
6703                 WARN_ONCE(!ndlp, "**** %s, put ref on NULL ndlp!", __func__);
6704         }
6705
6706         return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0;
6707 }
6708
6709 /**
6710  * lpfc_fcf_inuse - Check if FCF can be unregistered.
6711  * @phba: Pointer to hba context object.
6712  *
6713  * This function iterate through all FC nodes associated
6714  * will all vports to check if there is any node with
6715  * fc_rports associated with it. If there is an fc_rport
6716  * associated with the node, then the node is either in
6717  * discovered state or its devloss_timer is pending.
6718  */
6719 static int
6720 lpfc_fcf_inuse(struct lpfc_hba *phba)
6721 {
6722         struct lpfc_vport **vports;
6723         int i, ret = 0;
6724         struct lpfc_nodelist *ndlp;
6725         struct Scsi_Host  *shost;
6726
6727         vports = lpfc_create_vport_work_array(phba);
6728
6729         /* If driver cannot allocate memory, indicate fcf is in use */
6730         if (!vports)
6731                 return 1;
6732
6733         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6734                 shost = lpfc_shost_from_vport(vports[i]);
6735                 spin_lock_irq(shost->host_lock);
6736                 /*
6737                  * IF the CVL_RCVD bit is not set then we have sent the
6738                  * flogi.
6739                  * If dev_loss fires while we are waiting we do not want to
6740                  * unreg the fcf.
6741                  */
6742                 if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) {
6743                         spin_unlock_irq(shost->host_lock);
6744                         ret =  1;
6745                         goto out;
6746                 }
6747                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
6748                         if (ndlp->rport &&
6749                           (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
6750                                 ret = 1;
6751                                 spin_unlock_irq(shost->host_lock);
6752                                 goto out;
6753                         } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
6754                                 ret = 1;
6755                                 lpfc_printf_log(phba, KERN_INFO,
6756                                                 LOG_NODE | LOG_DISCOVERY,
6757                                                 "2624 RPI %x DID %x flag %x "
6758                                                 "still logged in\n",
6759                                                 ndlp->nlp_rpi, ndlp->nlp_DID,
6760                                                 ndlp->nlp_flag);
6761                         }
6762                 }
6763                 spin_unlock_irq(shost->host_lock);
6764         }
6765 out:
6766         lpfc_destroy_vport_work_array(phba, vports);
6767         return ret;
6768 }
6769
6770 /**
6771  * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
6772  * @phba: Pointer to hba context object.
6773  * @mboxq: Pointer to mailbox object.
6774  *
6775  * This function frees memory associated with the mailbox command.
6776  */
6777 void
6778 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6779 {
6780         struct lpfc_vport *vport = mboxq->vport;
6781         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6782
6783         if (mboxq->u.mb.mbxStatus) {
6784                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6785                                 "2555 UNREG_VFI mbxStatus error x%x "
6786                                 "HBA state x%x\n",
6787                                 mboxq->u.mb.mbxStatus, vport->port_state);
6788         }
6789         spin_lock_irq(shost->host_lock);
6790         phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
6791         spin_unlock_irq(shost->host_lock);
6792         mempool_free(mboxq, phba->mbox_mem_pool);
6793         return;
6794 }
6795
6796 /**
6797  * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
6798  * @phba: Pointer to hba context object.
6799  * @mboxq: Pointer to mailbox object.
6800  *
6801  * This function frees memory associated with the mailbox command.
6802  */
6803 static void
6804 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6805 {
6806         struct lpfc_vport *vport = mboxq->vport;
6807
6808         if (mboxq->u.mb.mbxStatus) {
6809                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6810                                 "2550 UNREG_FCFI mbxStatus error x%x "
6811                                 "HBA state x%x\n",
6812                                 mboxq->u.mb.mbxStatus, vport->port_state);
6813         }
6814         mempool_free(mboxq, phba->mbox_mem_pool);
6815         return;
6816 }
6817
6818 /**
6819  * lpfc_unregister_fcf_prep - Unregister fcf record preparation
6820  * @phba: Pointer to hba context object.
6821  *
6822  * This function prepare the HBA for unregistering the currently registered
6823  * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
6824  * VFIs.
6825  */
6826 int
6827 lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
6828 {
6829         struct lpfc_vport **vports;
6830         struct lpfc_nodelist *ndlp;
6831         struct Scsi_Host *shost;
6832         int i = 0, rc;
6833
6834         /* Unregister RPIs */
6835         if (lpfc_fcf_inuse(phba))
6836                 lpfc_unreg_hba_rpis(phba);
6837
6838         /* At this point, all discovery is aborted */
6839         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
6840
6841         /* Unregister VPIs */
6842         vports = lpfc_create_vport_work_array(phba);
6843         if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
6844                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6845                         /* Stop FLOGI/FDISC retries */
6846                         ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
6847                         if (ndlp)
6848                                 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
6849                         lpfc_cleanup_pending_mbox(vports[i]);
6850                         if (phba->sli_rev == LPFC_SLI_REV4)
6851                                 lpfc_sli4_unreg_all_rpis(vports[i]);
6852                         lpfc_mbx_unreg_vpi(vports[i]);
6853                         shost = lpfc_shost_from_vport(vports[i]);
6854                         spin_lock_irq(shost->host_lock);
6855                         vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6856                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
6857                         spin_unlock_irq(shost->host_lock);
6858                 }
6859         lpfc_destroy_vport_work_array(phba, vports);
6860         if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) {
6861                 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
6862                 if (ndlp)
6863                         lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
6864                 lpfc_cleanup_pending_mbox(phba->pport);
6865                 if (phba->sli_rev == LPFC_SLI_REV4)
6866                         lpfc_sli4_unreg_all_rpis(phba->pport);
6867                 lpfc_mbx_unreg_vpi(phba->pport);
6868                 shost = lpfc_shost_from_vport(phba->pport);
6869                 spin_lock_irq(shost->host_lock);
6870                 phba->pport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6871                 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED;
6872                 spin_unlock_irq(shost->host_lock);
6873         }
6874
6875         /* Cleanup any outstanding ELS commands */
6876         lpfc_els_flush_all_cmd(phba);
6877
6878         /* Unregister the physical port VFI */
6879         rc = lpfc_issue_unreg_vfi(phba->pport);
6880         return rc;
6881 }
6882
6883 /**
6884  * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
6885  * @phba: Pointer to hba context object.
6886  *
6887  * This function issues synchronous unregister FCF mailbox command to HBA to
6888  * unregister the currently registered FCF record. The driver does not reset
6889  * the driver FCF usage state flags.
6890  *
6891  * Return 0 if successfully issued, none-zero otherwise.
6892  */
6893 int
6894 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
6895 {
6896         LPFC_MBOXQ_t *mbox;
6897         int rc;
6898
6899         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6900         if (!mbox) {
6901                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6902                                 "2551 UNREG_FCFI mbox allocation failed"
6903                                 "HBA state x%x\n", phba->pport->port_state);
6904                 return -ENOMEM;
6905         }
6906         lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
6907         mbox->vport = phba->pport;
6908         mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
6909         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
6910
6911         if (rc == MBX_NOT_FINISHED) {
6912                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6913                                 "2552 Unregister FCFI command failed rc x%x "
6914                                 "HBA state x%x\n",
6915                                 rc, phba->pport->port_state);
6916                 return -EINVAL;
6917         }
6918         return 0;
6919 }
6920
6921 /**
6922  * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
6923  * @phba: Pointer to hba context object.
6924  *
6925  * This function unregisters the currently reigstered FCF. This function
6926  * also tries to find another FCF for discovery by rescan the HBA FCF table.
6927  */
6928 void
6929 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
6930 {
6931         int rc;
6932
6933         /* Preparation for unregistering fcf */
6934         rc = lpfc_unregister_fcf_prep(phba);
6935         if (rc) {
6936                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6937                                 "2748 Failed to prepare for unregistering "
6938                                 "HBA's FCF record: rc=%d\n", rc);
6939                 return;
6940         }
6941
6942         /* Now, unregister FCF record and reset HBA FCF state */
6943         rc = lpfc_sli4_unregister_fcf(phba);
6944         if (rc)
6945                 return;
6946         /* Reset HBA FCF states after successful unregister FCF */
6947         spin_lock_irq(&phba->hbalock);
6948         phba->fcf.fcf_flag = 0;
6949         spin_unlock_irq(&phba->hbalock);
6950         phba->fcf.current_rec.flag = 0;
6951
6952         /*
6953          * If driver is not unloading, check if there is any other
6954          * FCF record that can be used for discovery.
6955          */
6956         if ((phba->pport->load_flag & FC_UNLOADING) ||
6957             (phba->link_state < LPFC_LINK_UP))
6958                 return;
6959
6960         /* This is considered as the initial FCF discovery scan */
6961         spin_lock_irq(&phba->hbalock);
6962         phba->fcf.fcf_flag |= FCF_INIT_DISC;
6963         spin_unlock_irq(&phba->hbalock);
6964
6965         /* Reset FCF roundrobin bmask for new discovery */
6966         lpfc_sli4_clear_fcf_rr_bmask(phba);
6967
6968         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
6969
6970         if (rc) {
6971                 spin_lock_irq(&phba->hbalock);
6972                 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
6973                 spin_unlock_irq(&phba->hbalock);
6974                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6975                                 "2553 lpfc_unregister_unused_fcf failed "
6976                                 "to read FCF record HBA state x%x\n",
6977                                 phba->pport->port_state);
6978         }
6979 }
6980
6981 /**
6982  * lpfc_unregister_fcf - Unregister the currently registered fcf record
6983  * @phba: Pointer to hba context object.
6984  *
6985  * This function just unregisters the currently reigstered FCF. It does not
6986  * try to find another FCF for discovery.
6987  */
6988 void
6989 lpfc_unregister_fcf(struct lpfc_hba *phba)
6990 {
6991         int rc;
6992
6993         /* Preparation for unregistering fcf */
6994         rc = lpfc_unregister_fcf_prep(phba);
6995         if (rc) {
6996                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6997                                 "2749 Failed to prepare for unregistering "
6998                                 "HBA's FCF record: rc=%d\n", rc);
6999                 return;
7000         }
7001
7002         /* Now, unregister FCF record and reset HBA FCF state */
7003         rc = lpfc_sli4_unregister_fcf(phba);
7004         if (rc)
7005                 return;
7006         /* Set proper HBA FCF states after successful unregister FCF */
7007         spin_lock_irq(&phba->hbalock);
7008         phba->fcf.fcf_flag &= ~FCF_REGISTERED;
7009         spin_unlock_irq(&phba->hbalock);
7010 }
7011
7012 /**
7013  * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
7014  * @phba: Pointer to hba context object.
7015  *
7016  * This function check if there are any connected remote port for the FCF and
7017  * if all the devices are disconnected, this function unregister FCFI.
7018  * This function also tries to use another FCF for discovery.
7019  */
7020 void
7021 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
7022 {
7023         /*
7024          * If HBA is not running in FIP mode, if HBA does not support
7025          * FCoE, if FCF discovery is ongoing, or if FCF has not been
7026          * registered, do nothing.
7027          */
7028         spin_lock_irq(&phba->hbalock);
7029         if (!(phba->hba_flag & HBA_FCOE_MODE) ||
7030             !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
7031             !(phba->hba_flag & HBA_FIP_SUPPORT) ||
7032             (phba->fcf.fcf_flag & FCF_DISCOVERY) ||
7033             (phba->pport->port_state == LPFC_FLOGI)) {
7034                 spin_unlock_irq(&phba->hbalock);
7035                 return;
7036         }
7037         spin_unlock_irq(&phba->hbalock);
7038
7039         if (lpfc_fcf_inuse(phba))
7040                 return;
7041
7042         lpfc_unregister_fcf_rescan(phba);
7043 }
7044
7045 /**
7046  * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
7047  * @phba: Pointer to hba context object.
7048  * @buff: Buffer containing the FCF connection table as in the config
7049  *         region.
7050  * This function create driver data structure for the FCF connection
7051  * record table read from config region 23.
7052  */
7053 static void
7054 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
7055         uint8_t *buff)
7056 {
7057         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
7058         struct lpfc_fcf_conn_hdr *conn_hdr;
7059         struct lpfc_fcf_conn_rec *conn_rec;
7060         uint32_t record_count;
7061         int i;
7062
7063         /* Free the current connect table */
7064         list_for_each_entry_safe(conn_entry, next_conn_entry,
7065                 &phba->fcf_conn_rec_list, list) {
7066                 list_del_init(&conn_entry->list);
7067                 kfree(conn_entry);
7068         }
7069
7070         conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
7071         record_count = conn_hdr->length * sizeof(uint32_t)/
7072                 sizeof(struct lpfc_fcf_conn_rec);
7073
7074         conn_rec = (struct lpfc_fcf_conn_rec *)
7075                 (buff + sizeof(struct lpfc_fcf_conn_hdr));
7076
7077         for (i = 0; i < record_count; i++) {
7078                 if (!(conn_rec[i].flags & FCFCNCT_VALID))
7079                         continue;
7080                 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
7081                         GFP_KERNEL);
7082                 if (!conn_entry) {
7083                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7084                                         "2566 Failed to allocate connection"
7085                                         " table entry\n");
7086                         return;
7087                 }
7088
7089                 memcpy(&conn_entry->conn_rec, &conn_rec[i],
7090                         sizeof(struct lpfc_fcf_conn_rec));
7091                 list_add_tail(&conn_entry->list,
7092                         &phba->fcf_conn_rec_list);
7093         }
7094
7095         if (!list_empty(&phba->fcf_conn_rec_list)) {
7096                 i = 0;
7097                 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list,
7098                                     list) {
7099                         conn_rec = &conn_entry->conn_rec;
7100                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7101                                         "3345 FCF connection list rec[%02d]: "
7102                                         "flags:x%04x, vtag:x%04x, "
7103                                         "fabric_name:x%02x:%02x:%02x:%02x:"
7104                                         "%02x:%02x:%02x:%02x, "
7105                                         "switch_name:x%02x:%02x:%02x:%02x:"
7106                                         "%02x:%02x:%02x:%02x\n", i++,
7107                                         conn_rec->flags, conn_rec->vlan_tag,
7108                                         conn_rec->fabric_name[0],
7109                                         conn_rec->fabric_name[1],
7110                                         conn_rec->fabric_name[2],
7111                                         conn_rec->fabric_name[3],
7112                                         conn_rec->fabric_name[4],
7113                                         conn_rec->fabric_name[5],
7114                                         conn_rec->fabric_name[6],
7115                                         conn_rec->fabric_name[7],
7116                                         conn_rec->switch_name[0],
7117                                         conn_rec->switch_name[1],
7118                                         conn_rec->switch_name[2],
7119                                         conn_rec->switch_name[3],
7120                                         conn_rec->switch_name[4],
7121                                         conn_rec->switch_name[5],
7122                                         conn_rec->switch_name[6],
7123                                         conn_rec->switch_name[7]);
7124                 }
7125         }
7126 }
7127
7128 /**
7129  * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
7130  * @phba: Pointer to hba context object.
7131  * @buff: Buffer containing the FCoE parameter data structure.
7132  *
7133  *  This function update driver data structure with config
7134  *  parameters read from config region 23.
7135  */
7136 static void
7137 lpfc_read_fcoe_param(struct lpfc_hba *phba,
7138                         uint8_t *buff)
7139 {
7140         struct lpfc_fip_param_hdr *fcoe_param_hdr;
7141         struct lpfc_fcoe_params *fcoe_param;
7142
7143         fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
7144                 buff;
7145         fcoe_param = (struct lpfc_fcoe_params *)
7146                 (buff + sizeof(struct lpfc_fip_param_hdr));
7147
7148         if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
7149                 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
7150                 return;
7151
7152         if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
7153                 phba->valid_vlan = 1;
7154                 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
7155                         0xFFF;
7156         }
7157
7158         phba->fc_map[0] = fcoe_param->fc_map[0];
7159         phba->fc_map[1] = fcoe_param->fc_map[1];
7160         phba->fc_map[2] = fcoe_param->fc_map[2];
7161         return;
7162 }
7163
7164 /**
7165  * lpfc_get_rec_conf23 - Get a record type in config region data.
7166  * @buff: Buffer containing config region 23 data.
7167  * @size: Size of the data buffer.
7168  * @rec_type: Record type to be searched.
7169  *
7170  * This function searches config region data to find the beginning
7171  * of the record specified by record_type. If record found, this
7172  * function return pointer to the record else return NULL.
7173  */
7174 static uint8_t *
7175 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
7176 {
7177         uint32_t offset = 0, rec_length;
7178
7179         if ((buff[0] == LPFC_REGION23_LAST_REC) ||
7180                 (size < sizeof(uint32_t)))
7181                 return NULL;
7182
7183         rec_length = buff[offset + 1];
7184
7185         /*
7186          * One TLV record has one word header and number of data words
7187          * specified in the rec_length field of the record header.
7188          */
7189         while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
7190                 <= size) {
7191                 if (buff[offset] == rec_type)
7192                         return &buff[offset];
7193
7194                 if (buff[offset] == LPFC_REGION23_LAST_REC)
7195                         return NULL;
7196
7197                 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
7198                 rec_length = buff[offset + 1];
7199         }
7200         return NULL;
7201 }
7202
7203 /**
7204  * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
7205  * @phba: Pointer to lpfc_hba data structure.
7206  * @buff: Buffer containing config region 23 data.
7207  * @size: Size of the data buffer.
7208  *
7209  * This function parses the FCoE config parameters in config region 23 and
7210  * populate driver data structure with the parameters.
7211  */
7212 void
7213 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
7214                 uint8_t *buff,
7215                 uint32_t size)
7216 {
7217         uint32_t offset = 0;
7218         uint8_t *rec_ptr;
7219
7220         /*
7221          * If data size is less than 2 words signature and version cannot be
7222          * verified.
7223          */
7224         if (size < 2*sizeof(uint32_t))
7225                 return;
7226
7227         /* Check the region signature first */
7228         if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
7229                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7230                         "2567 Config region 23 has bad signature\n");
7231                 return;
7232         }
7233
7234         offset += 4;
7235
7236         /* Check the data structure version */
7237         if (buff[offset] != LPFC_REGION23_VERSION) {
7238                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7239                                 "2568 Config region 23 has bad version\n");
7240                 return;
7241         }
7242         offset += 4;
7243
7244         /* Read FCoE param record */
7245         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
7246                         size - offset, FCOE_PARAM_TYPE);
7247         if (rec_ptr)
7248                 lpfc_read_fcoe_param(phba, rec_ptr);
7249
7250         /* Read FCF connection table */
7251         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
7252                 size - offset, FCOE_CONN_TBL_TYPE);
7253         if (rec_ptr)
7254                 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
7255
7256 }
7257
7258 /*
7259  * lpfc_error_lost_link - IO failure from link event or FW reset check.
7260  *
7261  * @vport: Pointer to lpfc_vport data structure.
7262  * @ulp_status: IO completion status.
7263  * @ulp_word4: Reason code for the ulp_status.
7264  *
7265  * This function evaluates the ulp_status and ulp_word4 values
7266  * for specific error values that indicate an internal link fault
7267  * or fw reset event for the completing IO.  Callers require this
7268  * common data to decide next steps on the IO.
7269  *
7270  * Return:
7271  * false - No link or reset error occurred.
7272  * true - A link or reset error occurred.
7273  */
7274 bool
7275 lpfc_error_lost_link(struct lpfc_vport *vport, u32 ulp_status, u32 ulp_word4)
7276 {
7277         /* Mask off the extra port data to get just the reason code. */
7278         u32 rsn_code = IOERR_PARAM_MASK & ulp_word4;
7279
7280         if (ulp_status == IOSTAT_LOCAL_REJECT &&
7281             (rsn_code == IOERR_SLI_ABORTED ||
7282              rsn_code == IOERR_LINK_DOWN ||
7283              rsn_code == IOERR_SLI_DOWN)) {
7284                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI | LOG_ELS,
7285                                  "0408 Report link error true: <x%x:x%x>\n",
7286                                  ulp_status, ulp_word4);
7287                 return true;
7288         }
7289
7290         return false;
7291 }