drivers/scsi/lpfc/lpfc_hbadisc.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2017-2021 Broadcom. All Rights Reserved. The term *
   5  * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.     *
   6  * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
   7  * EMULEX and SLI are trademarks of Emulex.                        *
   8  * www.broadcom.com                                                *
   9  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
  10  *                                                                 *
  11  * This program is free software; you can redistribute it and/or   *
  12  * modify it under the terms of version 2 of the GNU General       *
  13  * Public License as published by the Free Software Foundation.    *
  14  * This program is distributed in the hope that it will be useful. *
  15  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  16  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  17  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  18  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  19  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  20  * more details, a copy of which can be found in the file COPYING  *
  21  * included with this package.                                     *
  22  *******************************************************************/
  23
  24 #include <linux/blkdev.h>
  25 #include <linux/delay.h>
  26 #include <linux/slab.h>
  27 #include <linux/pci.h>
  28 #include <linux/kthread.h>
  29 #include <linux/interrupt.h>
  30 #include <linux/lockdep.h>
  31 #include <linux/utsname.h>
  32
  33 #include <scsi/scsi.h>
  34 #include <scsi/scsi_device.h>
  35 #include <scsi/scsi_host.h>
  36 #include <scsi/scsi_transport_fc.h>
  37 #include <scsi/fc/fc_fs.h>
  38
  39 #include "lpfc_hw4.h"
  40 #include "lpfc_hw.h"
  41 #include "lpfc_nl.h"
  42 #include "lpfc_disc.h"
  43 #include "lpfc_sli.h"
  44 #include "lpfc_sli4.h"
  45 #include "lpfc.h"
  46 #include "lpfc_scsi.h"
  47 #include "lpfc_nvme.h"
  48 #include "lpfc_logmsg.h"
  49 #include "lpfc_crtn.h"
  50 #include "lpfc_vport.h"
  51 #include "lpfc_debugfs.h"
  52
  53 /* AlpaArray for assignment of scsid for scan-down and bind_method */
  54 static uint8_t lpfcAlpaArray[] = {
  55         0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
  56         0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
  57         0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
  58         0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
  59         0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
  60         0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
  61         0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
  62         0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
  63         0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
  64         0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
  65         0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
  66         0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
  67         0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
  68 };
  69
  70 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
  71 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
  72 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
  73 static int lpfc_fcf_inuse(struct lpfc_hba *);
  74 static void lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *, LPFC_MBOXQ_t *);
  75 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba);
  76 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba);
  77
  78 static int
  79 lpfc_valid_xpt_node(struct lpfc_nodelist *ndlp)
  80 {
  81         if (ndlp->nlp_fc4_type ||
  82             ndlp->nlp_type & NLP_FABRIC)
  83                 return 1;
  84         return 0;
  85 }
  86 /* The source of a terminate rport I/O is either a dev_loss_tmo
  87  * event or a call to fc_remove_host.  While the rport should be
  88  * valid during these downcalls, the transport can call twice
  89  * in a single event.  This routine provides somoe protection
  90  * as the NDLP isn't really free, just released to the pool.
  91  */
  92 static int
  93 lpfc_rport_invalid(struct fc_rport *rport)
  94 {
  95         struct lpfc_rport_data *rdata;
  96         struct lpfc_nodelist *ndlp;
  97
  98         if (!rport) {
  99                 pr_err("**** %s: NULL rport, exit.\n", __func__);
 100                 return -EINVAL;
 101         }
 102
 103         rdata = rport->dd_data;
 104         if (!rdata) {
 105                 pr_err("**** %s: NULL dd_data on rport x%px SID x%x\n",
 106                        __func__, rport, rport->scsi_target_id);
 107                 return -EINVAL;
 108         }
 109
 110         ndlp = rdata->pnode;
 111         if (!rdata->pnode) {
 112                 pr_err("**** %s: NULL ndlp on rport x%px SID x%x\n",
 113                        __func__, rport, rport->scsi_target_id);
 114                 return -EINVAL;
 115         }
 116
 117         if (!ndlp->vport) {
 118                 pr_err("**** %s: Null vport on ndlp x%px, DID x%x rport x%px "
 119                        "SID x%x\n", __func__, ndlp, ndlp->nlp_DID, rport,
 120                        rport->scsi_target_id);
 121                 return -EINVAL;
 122         }
 123         return 0;
 124 }
 125
 126 void
 127 lpfc_terminate_rport_io(struct fc_rport *rport)
 128 {
 129         struct lpfc_rport_data *rdata;
 130         struct lpfc_nodelist *ndlp;
 131         struct lpfc_vport *vport;
 132
 133         if (lpfc_rport_invalid(rport))
 134                 return;
 135
 136         rdata = rport->dd_data;
 137         ndlp = rdata->pnode;
 138         vport = ndlp->vport;
 139         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 140                               "rport terminate: sid:x%x did:x%x flg:x%x",
 141                               ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 142
 143         if (ndlp->nlp_sid != NLP_NO_SID)
 144                 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 145 }
 146
 147 /*
 148  * This function will be called when dev_loss_tmo fire.
 149  */
 150 void
 151 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
 152 {
 153         struct lpfc_nodelist *ndlp;
 154         struct lpfc_vport *vport;
 155         struct lpfc_hba   *phba;
 156         struct lpfc_work_evt *evtp;
 157         unsigned long iflags;
 158
 159         ndlp = ((struct lpfc_rport_data *)rport->dd_data)->pnode;
 160         if (!ndlp)
 161                 return;
 162
 163         vport = ndlp->vport;
 164         phba  = vport->phba;
 165
 166         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 167                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
 168                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 169
 170         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 171                          "3181 dev_loss_callbk x%06x, rport x%px flg x%x "
 172                          "load_flag x%x refcnt %d\n",
 173                          ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag,
 174                          vport->load_flag, kref_read(&ndlp->kref));
 175
 176         /* Don't schedule a worker thread event if the vport is going down.
 177          * The teardown process cleans up the node via lpfc_drop_node.
 178          */
 179         if (vport->load_flag & FC_UNLOADING) {
 180                 ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL;
 181                 ndlp->rport = NULL;
 182
 183                 ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD;
 184
 185                 /* Remove the node reference from remote_port_add now.
 186                  * The driver will not call remote_port_delete.
 187                  */
 188                 lpfc_nlp_put(ndlp);
 189                 return;
 190         }
 191
 192         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 193                 return;
 194
 195         if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn))
 196                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 197                                  "6789 rport name %llx != node port name %llx",
 198                                  rport->port_name,
 199                                  wwn_to_u64(ndlp->nlp_portname.u.wwn));
 200
 201         evtp = &ndlp->dev_loss_evt;
 202
 203         if (!list_empty(&evtp->evt_listp)) {
 204                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 205                                  "6790 rport name %llx dev_loss_evt pending\n",
 206                                  rport->port_name);
 207                 return;
 208         }
 209
 210         spin_lock_irqsave(&ndlp->lock, iflags);
 211         ndlp->nlp_flag |= NLP_IN_DEV_LOSS;
 212         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 213
 214         /*
 215          * The backend does not expect any more calls associated with this
 216          * rport. Remove the association between rport and ndlp.
 217          */
 218         ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD;
 219         ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL;
 220         ndlp->rport = NULL;
 221         spin_unlock_irqrestore(&ndlp->lock, iflags);
 222
 223         /* We need to hold the node by incrementing the reference
 224          * count until this queued work is done
 225          */
 226         evtp->evt_arg1 = lpfc_nlp_get(ndlp);
 227
 228         spin_lock_irqsave(&phba->hbalock, iflags);
 229         if (evtp->evt_arg1) {
 230                 evtp->evt = LPFC_EVT_DEV_LOSS;
 231                 list_add_tail(&evtp->evt_listp, &phba->work_list);
 232                 lpfc_worker_wake_up(phba);
 233         }
 234         spin_unlock_irqrestore(&phba->hbalock, iflags);
 235
 236         return;
 237 }
 238
 239 /**
 240  * lpfc_check_inactive_vmid_one - VMID inactivity checker for a vport
 241  * @vport: Pointer to vport context object.
 242  *
 243  * This function checks for idle VMID entries related to a particular vport. If
 244  * found unused/idle, free them accordingly.
 245  **/
 246 static void lpfc_check_inactive_vmid_one(struct lpfc_vport *vport)
 247 {
 248         u16 keep;
 249         u32 difftime = 0, r, bucket;
 250         u64 *lta;
 251         int cpu;
 252         struct lpfc_vmid *vmp;
 253
 254         write_lock(&vport->vmid_lock);
 255
 256         if (!vport->cur_vmid_cnt)
 257                 goto out;
 258
 259         /* iterate through the table */
 260         hash_for_each(vport->hash_table, bucket, vmp, hnode) {
 261                 keep = 0;
 262                 if (vmp->flag & LPFC_VMID_REGISTERED) {
 263                         /* check if the particular VMID is in use */
 264                         /* for all available per cpu variable */
 265                         for_each_possible_cpu(cpu) {
 266                                 /* if last access time is less than timeout */
 267                                 lta = per_cpu_ptr(vmp->last_io_time, cpu);
 268                                 if (!lta)
 269                                         continue;
 270                                 difftime = (jiffies) - (*lta);
 271                                 if ((vport->vmid_inactivity_timeout *
 272                                      JIFFIES_PER_HR) > difftime) {
 273                                         keep = 1;
 274                                         break;
 275                                 }
 276                         }
 277
 278                         /* if none of the cpus have been used by the vm, */
 279                         /*  remove the entry if already registered */
 280                         if (!keep) {
 281                                 /* mark the entry for deregistration */
 282                                 vmp->flag = LPFC_VMID_DE_REGISTER;
 283                                 write_unlock(&vport->vmid_lock);
 284                                 if (vport->vmid_priority_tagging)
 285                                         r = lpfc_vmid_uvem(vport, vmp, false);
 286                                 else
 287                                         r = lpfc_vmid_cmd(vport,
 288                                                           SLI_CTAS_DAPP_IDENT,
 289                                                           vmp);
 290
 291                                 /* decrement number of active vms and mark */
 292                                 /* entry in slot as free */
 293                                 write_lock(&vport->vmid_lock);
 294                                 if (!r) {
 295                                         struct lpfc_vmid *ht = vmp;
 296
 297                                         vport->cur_vmid_cnt--;
 298                                         ht->flag = LPFC_VMID_SLOT_FREE;
 299                                         free_percpu(ht->last_io_time);
 300                                         ht->last_io_time = NULL;
 301                                         hash_del(&ht->hnode);
 302                                 }
 303                         }
 304                 }
 305         }
 306  out:
 307         write_unlock(&vport->vmid_lock);
 308 }
 309
 310 /**
 311  * lpfc_check_inactive_vmid - VMID inactivity checker
 312  * @phba: Pointer to hba context object.
 313  *
 314  * This function is called from the worker thread to determine if an entry in
 315  * the VMID table can be released since there was no I/O activity seen from that
 316  * particular VM for the specified time. When this happens, the entry in the
 317  * table is released and also the resources on the switch cleared.
 318  **/
 319
 320 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba)
 321 {
 322         struct lpfc_vport *vport;
 323         struct lpfc_vport **vports;
 324         int i;
 325
 326         vports = lpfc_create_vport_work_array(phba);
 327         if (!vports)
 328                 return;
 329
 330         for (i = 0; i <= phba->max_vports; i++) {
 331                 if ((!vports[i]) && (i == 0))
 332                         vport = phba->pport;
 333                 else
 334                         vport = vports[i];
 335                 if (!vport)
 336                         break;
 337
 338                 lpfc_check_inactive_vmid_one(vport);
 339         }
 340         lpfc_destroy_vport_work_array(phba, vports);
 341 }
 342
 343 /**
 344  * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler
 345  * @ndlp: Pointer to remote node object.
 346  *
 347  * This function is called from the worker thread when devloss timeout timer
 348  * expires. For SLI4 host, this routine shall return 1 when at lease one
 349  * remote node, including this @ndlp, is still in use of FCF; otherwise, this
 350  * routine shall return 0 when there is no remote node is still in use of FCF
 351  * when devloss timeout happened to this @ndlp.
 352  **/
 353 static int
 354 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 355 {
 356         struct lpfc_vport *vport;
 357         struct lpfc_hba   *phba;
 358         uint8_t *name;
 359         int warn_on = 0;
 360         int fcf_inuse = 0;
 361         unsigned long iflags;
 362
 363         vport = ndlp->vport;
 364         name = (uint8_t *)&ndlp->nlp_portname;
 365         phba = vport->phba;
 366
 367         spin_lock_irqsave(&ndlp->lock, iflags);
 368         ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
 369         spin_unlock_irqrestore(&ndlp->lock, iflags);
 370
 371         if (phba->sli_rev == LPFC_SLI_REV4)
 372                 fcf_inuse = lpfc_fcf_inuse(phba);
 373
 374         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 375                               "rport devlosstmo:did:x%x type:x%x id:x%x",
 376                               ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_sid);
 377
 378         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 379                          "3182 %s x%06x, nflag x%x xflags x%x refcnt %d\n",
 380                          __func__, ndlp->nlp_DID, ndlp->nlp_flag,
 381                          ndlp->fc4_xpt_flags, kref_read(&ndlp->kref));
 382
 383         /* If the driver is recovering the rport, ignore devloss. */
 384         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
 385                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 386                                  "0284 Devloss timeout Ignored on "
 387                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 388                                  "NPort x%x\n",
 389                                  *name, *(name+1), *(name+2), *(name+3),
 390                                  *(name+4), *(name+5), *(name+6), *(name+7),
 391                                  ndlp->nlp_DID);
 392                 return fcf_inuse;
 393         }
 394
 395         /* Fabric nodes are done. */
 396         if (ndlp->nlp_type & NLP_FABRIC) {
 397                 lpfc_nlp_put(ndlp);
 398                 return fcf_inuse;
 399         }
 400
 401         if (ndlp->nlp_sid != NLP_NO_SID) {
 402                 warn_on = 1;
 403                 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 404         }
 405
 406         if (warn_on) {
 407                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 408                                  "0203 Devloss timeout on "
 409                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 410                                  "NPort x%06x Data: x%x x%x x%x\n",
 411                                  *name, *(name+1), *(name+2), *(name+3),
 412                                  *(name+4), *(name+5), *(name+6), *(name+7),
 413                                  ndlp->nlp_DID, ndlp->nlp_flag,
 414                                  ndlp->nlp_state, ndlp->nlp_rpi);
 415         } else {
 416                 lpfc_printf_vlog(vport, KERN_INFO, LOG_TRACE_EVENT,
 417                                  "0204 Devloss timeout on "
 418                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 419                                  "NPort x%06x Data: x%x x%x x%x\n",
 420                                  *name, *(name+1), *(name+2), *(name+3),
 421                                  *(name+4), *(name+5), *(name+6), *(name+7),
 422                                  ndlp->nlp_DID, ndlp->nlp_flag,
 423                                  ndlp->nlp_state, ndlp->nlp_rpi);
 424         }
 425
 426         if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD))
 427                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 428
 429         return fcf_inuse;
 430 }
 431
 432 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba)
 433 {
 434         struct lpfc_vport *vport;
 435         struct lpfc_vport **vports;
 436         int i;
 437
 438         vports = lpfc_create_vport_work_array(phba);
 439         if (!vports)
 440                 return;
 441
 442         for (i = 0; i <= phba->max_vports; i++) {
 443                 if ((!vports[i]) && (i == 0))
 444                         vport = phba->pport;
 445                 else
 446                         vport = vports[i];
 447                 if (!vport)
 448                         break;
 449
 450                 if (vport->vmid_flag & LPFC_VMID_ISSUE_QFPA) {
 451                         if (!lpfc_issue_els_qfpa(vport))
 452                                 vport->vmid_flag &= ~LPFC_VMID_ISSUE_QFPA;
 453                 }
 454         }
 455         lpfc_destroy_vport_work_array(phba, vports);
 456 }
 457
 458 /**
 459  * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler
 460  * @phba: Pointer to hba context object.
 461  * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler.
 462  * @nlp_did: remote node identifer with devloss timeout.
 463  *
 464  * This function is called from the worker thread after invoking devloss
 465  * timeout handler and releasing the reference count for the ndlp with
 466  * which the devloss timeout was handled for SLI4 host. For the devloss
 467  * timeout of the last remote node which had been in use of FCF, when this
 468  * routine is invoked, it shall be guaranteed that none of the remote are
 469  * in-use of FCF. When devloss timeout to the last remote using the FCF,
 470  * if the FIP engine is neither in FCF table scan process nor roundrobin
 471  * failover process, the in-use FCF shall be unregistered. If the FIP
 472  * engine is in FCF discovery process, the devloss timeout state shall
 473  * be set for either the FCF table scan process or roundrobin failover
 474  * process to unregister the in-use FCF.
 475  **/
 476 static void
 477 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse,
 478                                     uint32_t nlp_did)
 479 {
 480         /* If devloss timeout happened to a remote node when FCF had no
 481          * longer been in-use, do nothing.
 482          */
 483         if (!fcf_inuse)
 484                 return;
 485
 486         if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) {
 487                 spin_lock_irq(&phba->hbalock);
 488                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
 489                         if (phba->hba_flag & HBA_DEVLOSS_TMO) {
 490                                 spin_unlock_irq(&phba->hbalock);
 491                                 return;
 492                         }
 493                         phba->hba_flag |= HBA_DEVLOSS_TMO;
 494                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 495                                         "2847 Last remote node (x%x) using "
 496                                         "FCF devloss tmo\n", nlp_did);
 497                 }
 498                 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) {
 499                         spin_unlock_irq(&phba->hbalock);
 500                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 501                                         "2868 Devloss tmo to FCF rediscovery "
 502                                         "in progress\n");
 503                         return;
 504                 }
 505                 if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) {
 506                         spin_unlock_irq(&phba->hbalock);
 507                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 508                                         "2869 Devloss tmo to idle FIP engine, "
 509                                         "unreg in-use FCF and rescan.\n");
 510                         /* Unregister in-use FCF and rescan */
 511                         lpfc_unregister_fcf_rescan(phba);
 512                         return;
 513                 }
 514                 spin_unlock_irq(&phba->hbalock);
 515                 if (phba->hba_flag & FCF_TS_INPROG)
 516                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 517                                         "2870 FCF table scan in progress\n");
 518                 if (phba->hba_flag & FCF_RR_INPROG)
 519                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 520                                         "2871 FLOGI roundrobin FCF failover "
 521                                         "in progress\n");
 522         }
 523         lpfc_unregister_unused_fcf(phba);
 524 }
 525
 526 /**
 527  * lpfc_alloc_fast_evt - Allocates data structure for posting event
 528  * @phba: Pointer to hba context object.
 529  *
 530  * This function is called from the functions which need to post
 531  * events from interrupt context. This function allocates data
 532  * structure required for posting event. It also keeps track of
 533  * number of events pending and prevent event storm when there are
 534  * too many events.
 535  **/
 536 struct lpfc_fast_path_event *
 537 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
 538         struct lpfc_fast_path_event *ret;
 539
 540         /* If there are lot of fast event do not exhaust memory due to this */
 541         if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
 542                 return NULL;
 543
 544         ret = kzalloc(sizeof(struct lpfc_fast_path_event),
 545                         GFP_ATOMIC);
 546         if (ret) {
 547                 atomic_inc(&phba->fast_event_count);
 548                 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
 549                 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
 550         }
 551         return ret;
 552 }
 553
 554 /**
 555  * lpfc_free_fast_evt - Frees event data structure
 556  * @phba: Pointer to hba context object.
 557  * @evt:  Event object which need to be freed.
 558  *
 559  * This function frees the data structure required for posting
 560  * events.
 561  **/
 562 void
 563 lpfc_free_fast_evt(struct lpfc_hba *phba,
 564                 struct lpfc_fast_path_event *evt) {
 565
 566         atomic_dec(&phba->fast_event_count);
 567         kfree(evt);
 568 }
 569
 570 /**
 571  * lpfc_send_fastpath_evt - Posts events generated from fast path
 572  * @phba: Pointer to hba context object.
 573  * @evtp: Event data structure.
 574  *
 575  * This function is called from worker thread, when the interrupt
 576  * context need to post an event. This function posts the event
 577  * to fc transport netlink interface.
 578  **/
 579 static void
 580 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
 581                 struct lpfc_work_evt *evtp)
 582 {
 583         unsigned long evt_category, evt_sub_category;
 584         struct lpfc_fast_path_event *fast_evt_data;
 585         char *evt_data;
 586         uint32_t evt_data_size;
 587         struct Scsi_Host *shost;
 588
 589         fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
 590                 work_evt);
 591
 592         evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
 593         evt_sub_category = (unsigned long) fast_evt_data->un.
 594                         fabric_evt.subcategory;
 595         shost = lpfc_shost_from_vport(fast_evt_data->vport);
 596         if (evt_category == FC_REG_FABRIC_EVENT) {
 597                 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
 598                         evt_data = (char *) &fast_evt_data->un.read_check_error;
 599                         evt_data_size = sizeof(fast_evt_data->un.
 600                                 read_check_error);
 601                 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
 602                         (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
 603                         evt_data = (char *) &fast_evt_data->un.fabric_evt;
 604                         evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
 605                 } else {
 606                         lpfc_free_fast_evt(phba, fast_evt_data);
 607                         return;
 608                 }
 609         } else if (evt_category == FC_REG_SCSI_EVENT) {
 610                 switch (evt_sub_category) {
 611                 case LPFC_EVENT_QFULL:
 612                 case LPFC_EVENT_DEVBSY:
 613                         evt_data = (char *) &fast_evt_data->un.scsi_evt;
 614                         evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
 615                         break;
 616                 case LPFC_EVENT_CHECK_COND:
 617                         evt_data = (char *) &fast_evt_data->un.check_cond_evt;
 618                         evt_data_size =  sizeof(fast_evt_data->un.
 619                                 check_cond_evt);
 620                         break;
 621                 case LPFC_EVENT_VARQUEDEPTH:
 622                         evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
 623                         evt_data_size = sizeof(fast_evt_data->un.
 624                                 queue_depth_evt);
 625                         break;
 626                 default:
 627                         lpfc_free_fast_evt(phba, fast_evt_data);
 628                         return;
 629                 }
 630         } else {
 631                 lpfc_free_fast_evt(phba, fast_evt_data);
 632                 return;
 633         }
 634
 635         if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
 636                 fc_host_post_vendor_event(shost,
 637                         fc_get_event_number(),
 638                         evt_data_size,
 639                         evt_data,
 640                         LPFC_NL_VENDOR_ID);
 641
 642         lpfc_free_fast_evt(phba, fast_evt_data);
 643         return;
 644 }
 645
 646 static void
 647 lpfc_work_list_done(struct lpfc_hba *phba)
 648 {
 649         struct lpfc_work_evt  *evtp = NULL;
 650         struct lpfc_nodelist  *ndlp;
 651         int free_evt;
 652         int fcf_inuse;
 653         uint32_t nlp_did;
 654
 655         spin_lock_irq(&phba->hbalock);
 656         while (!list_empty(&phba->work_list)) {
 657                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 658                                  evt_listp);
 659                 spin_unlock_irq(&phba->hbalock);
 660                 free_evt = 1;
 661                 switch (evtp->evt) {
 662                 case LPFC_EVT_ELS_RETRY:
 663                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 664                         lpfc_els_retry_delay_handler(ndlp);
 665                         free_evt = 0; /* evt is part of ndlp */
 666                         /* decrement the node reference count held
 667                          * for this queued work
 668                          */
 669                         lpfc_nlp_put(ndlp);
 670                         break;
 671                 case LPFC_EVT_DEV_LOSS:
 672                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 673                         fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp);
 674                         free_evt = 0;
 675                         /* decrement the node reference count held for
 676                          * this queued work
 677                          */
 678                         nlp_did = ndlp->nlp_DID;
 679                         lpfc_nlp_put(ndlp);
 680                         if (phba->sli_rev == LPFC_SLI_REV4)
 681                                 lpfc_sli4_post_dev_loss_tmo_handler(phba,
 682                                                                     fcf_inuse,
 683                                                                     nlp_did);
 684                         break;
 685                 case LPFC_EVT_RECOVER_PORT:
 686                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 687                         lpfc_sli_abts_recover_port(ndlp->vport, ndlp);
 688                         free_evt = 0;
 689                         /* decrement the node reference count held for
 690                          * this queued work
 691                          */
 692                         lpfc_nlp_put(ndlp);
 693                         break;
 694                 case LPFC_EVT_ONLINE:
 695                         if (phba->link_state < LPFC_LINK_DOWN)
 696                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 697                         else
 698                                 *(int *) (evtp->evt_arg1) = 0;
 699                         complete((struct completion *)(evtp->evt_arg2));
 700                         break;
 701                 case LPFC_EVT_OFFLINE_PREP:
 702                         if (phba->link_state >= LPFC_LINK_DOWN)
 703                                 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
 704                         *(int *)(evtp->evt_arg1) = 0;
 705                         complete((struct completion *)(evtp->evt_arg2));
 706                         break;
 707                 case LPFC_EVT_OFFLINE:
 708                         lpfc_offline(phba);
 709                         lpfc_sli_brdrestart(phba);
 710                         *(int *)(evtp->evt_arg1) =
 711                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 712                         lpfc_unblock_mgmt_io(phba);
 713                         complete((struct completion *)(evtp->evt_arg2));
 714                         break;
 715                 case LPFC_EVT_WARM_START:
 716                         lpfc_offline(phba);
 717                         lpfc_reset_barrier(phba);
 718                         lpfc_sli_brdreset(phba);
 719                         lpfc_hba_down_post(phba);
 720                         *(int *)(evtp->evt_arg1) =
 721                                 lpfc_sli_brdready(phba, HS_MBRDY);
 722                         lpfc_unblock_mgmt_io(phba);
 723                         complete((struct completion *)(evtp->evt_arg2));
 724                         break;
 725                 case LPFC_EVT_KILL:
 726                         lpfc_offline(phba);
 727                         *(int *)(evtp->evt_arg1)
 728                                 = (phba->pport->stopped)
 729                                         ? 0 : lpfc_sli_brdkill(phba);
 730                         lpfc_unblock_mgmt_io(phba);
 731                         complete((struct completion *)(evtp->evt_arg2));
 732                         break;
 733                 case LPFC_EVT_FASTPATH_MGMT_EVT:
 734                         lpfc_send_fastpath_evt(phba, evtp);
 735                         free_evt = 0;
 736                         break;
 737                 case LPFC_EVT_RESET_HBA:
 738                         if (!(phba->pport->load_flag & FC_UNLOADING))
 739                                 lpfc_reset_hba(phba);
 740                         break;
 741                 }
 742                 if (free_evt)
 743                         kfree(evtp);
 744                 spin_lock_irq(&phba->hbalock);
 745         }
 746         spin_unlock_irq(&phba->hbalock);
 747
 748 }
 749
 750 static void
 751 lpfc_work_done(struct lpfc_hba *phba)
 752 {
 753         struct lpfc_sli_ring *pring;
 754         uint32_t ha_copy, status, control, work_port_events;
 755         struct lpfc_vport **vports;
 756         struct lpfc_vport *vport;
 757         int i;
 758
 759         spin_lock_irq(&phba->hbalock);
 760         ha_copy = phba->work_ha;
 761         phba->work_ha = 0;
 762         spin_unlock_irq(&phba->hbalock);
 763
 764         /* First, try to post the next mailbox command to SLI4 device */
 765         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
 766                 lpfc_sli4_post_async_mbox(phba);
 767
 768         if (ha_copy & HA_ERATT)
 769                 /* Handle the error attention event */
 770                 lpfc_handle_eratt(phba);
 771
 772         if (ha_copy & HA_MBATT)
 773                 lpfc_sli_handle_mb_event(phba);
 774
 775         if (ha_copy & HA_LATT)
 776                 lpfc_handle_latt(phba);
 777
 778         /* Handle VMID Events */
 779         if (lpfc_is_vmid_enabled(phba)) {
 780                 if (phba->pport->work_port_events &
 781                     WORKER_CHECK_VMID_ISSUE_QFPA) {
 782                         lpfc_check_vmid_qfpa_issue(phba);
 783                         phba->pport->work_port_events &=
 784                                 ~WORKER_CHECK_VMID_ISSUE_QFPA;
 785                 }
 786                 if (phba->pport->work_port_events &
 787                     WORKER_CHECK_INACTIVE_VMID) {
 788                         lpfc_check_inactive_vmid(phba);
 789                         phba->pport->work_port_events &=
 790                             ~WORKER_CHECK_INACTIVE_VMID;
 791                 }
 792         }
 793
 794         /* Process SLI4 events */
 795         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
 796                 if (phba->hba_flag & HBA_RRQ_ACTIVE)
 797                         lpfc_handle_rrq_active(phba);
 798                 if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
 799                         lpfc_sli4_els_xri_abort_event_proc(phba);
 800                 if (phba->hba_flag & ASYNC_EVENT)
 801                         lpfc_sli4_async_event_proc(phba);
 802                 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
 803                         spin_lock_irq(&phba->hbalock);
 804                         phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
 805                         spin_unlock_irq(&phba->hbalock);
 806                         lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
 807                 }
 808                 if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
 809                         lpfc_sli4_fcf_redisc_event_proc(phba);
 810         }
 811
 812         vports = lpfc_create_vport_work_array(phba);
 813         if (vports != NULL)
 814                 for (i = 0; i <= phba->max_vports; i++) {
 815                         /*
 816                          * We could have no vports in array if unloading, so if
 817                          * this happens then just use the pport
 818                          */
 819                         if (vports[i] == NULL && i == 0)
 820                                 vport = phba->pport;
 821                         else
 822                                 vport = vports[i];
 823                         if (vport == NULL)
 824                                 break;
 825                         spin_lock_irq(&vport->work_port_lock);
 826                         work_port_events = vport->work_port_events;
 827                         vport->work_port_events &= ~work_port_events;
 828                         spin_unlock_irq(&vport->work_port_lock);
 829                         if (work_port_events & WORKER_DISC_TMO)
 830                                 lpfc_disc_timeout_handler(vport);
 831                         if (work_port_events & WORKER_ELS_TMO)
 832                                 lpfc_els_timeout_handler(vport);
 833                         if (work_port_events & WORKER_HB_TMO)
 834                                 lpfc_hb_timeout_handler(phba);
 835                         if (work_port_events & WORKER_MBOX_TMO)
 836                                 lpfc_mbox_timeout_handler(phba);
 837                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
 838                                 lpfc_unblock_fabric_iocbs(phba);
 839                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
 840                                 lpfc_ramp_down_queue_handler(phba);
 841                         if (work_port_events & WORKER_DELAYED_DISC_TMO)
 842                                 lpfc_delayed_disc_timeout_handler(vport);
 843                 }
 844         lpfc_destroy_vport_work_array(phba, vports);
 845
 846         pring = lpfc_phba_elsring(phba);
 847         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
 848         status >>= (4*LPFC_ELS_RING);
 849         if (pring && (status & HA_RXMASK ||
 850                       pring->flag & LPFC_DEFERRED_RING_EVENT ||
 851                       phba->hba_flag & HBA_SP_QUEUE_EVT)) {
 852                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
 853                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
 854                         /* Preserve legacy behavior. */
 855                         if (!(phba->hba_flag & HBA_SP_QUEUE_EVT))
 856                                 set_bit(LPFC_DATA_READY, &phba->data_flags);
 857                 } else {
 858                         /* Driver could have abort request completed in queue
 859                          * when link goes down.  Allow for this transition.
 860                          */
 861                         if (phba->link_state >= LPFC_LINK_DOWN ||
 862                             phba->link_flag & LS_MDS_LOOPBACK) {
 863                                 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
 864                                 lpfc_sli_handle_slow_ring_event(phba, pring,
 865                                                                 (status &
 866                                                                 HA_RXMASK));
 867                         }
 868                 }
 869                 if (phba->sli_rev == LPFC_SLI_REV4)
 870                         lpfc_drain_txq(phba);
 871                 /*
 872                  * Turn on Ring interrupts
 873                  */
 874                 if (phba->sli_rev <= LPFC_SLI_REV3) {
 875                         spin_lock_irq(&phba->hbalock);
 876                         control = readl(phba->HCregaddr);
 877                         if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
 878                                 lpfc_debugfs_slow_ring_trc(phba,
 879                                         "WRK Enable ring: cntl:x%x hacopy:x%x",
 880                                         control, ha_copy, 0);
 881
 882                                 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
 883                                 writel(control, phba->HCregaddr);
 884                                 readl(phba->HCregaddr); /* flush */
 885                         } else {
 886                                 lpfc_debugfs_slow_ring_trc(phba,
 887                                         "WRK Ring ok:     cntl:x%x hacopy:x%x",
 888                                         control, ha_copy, 0);
 889                         }
 890                         spin_unlock_irq(&phba->hbalock);
 891                 }
 892         }
 893         lpfc_work_list_done(phba);
 894 }
 895
 896 int
 897 lpfc_do_work(void *p)
 898 {
 899         struct lpfc_hba *phba = p;
 900         int rc;
 901
 902         set_user_nice(current, MIN_NICE);
 903         current->flags |= PF_NOFREEZE;
 904         phba->data_flags = 0;
 905
 906         while (!kthread_should_stop()) {
 907                 /* wait and check worker queue activities */
 908                 rc = wait_event_interruptible(phba->work_waitq,
 909                                         (test_and_clear_bit(LPFC_DATA_READY,
 910                                                             &phba->data_flags)
 911                                          || kthread_should_stop()));
 912                 /* Signal wakeup shall terminate the worker thread */
 913                 if (rc) {
 914                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 915                                         "0433 Wakeup on signal: rc=x%x\n", rc);
 916                         break;
 917                 }
 918
 919                 /* Attend pending lpfc data processing */
 920                 lpfc_work_done(phba);
 921         }
 922         phba->worker_thread = NULL;
 923         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
 924                         "0432 Worker thread stopped.\n");
 925         return 0;
 926 }
 927
 928 /*
 929  * This is only called to handle FC worker events. Since this a rare
 930  * occurrence, we allocate a struct lpfc_work_evt structure here instead of
 931  * embedding it in the IOCB.
 932  */
 933 int
 934 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
 935                       uint32_t evt)
 936 {
 937         struct lpfc_work_evt  *evtp;
 938         unsigned long flags;
 939
 940         /*
 941          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
 942          * be queued to worker thread for processing
 943          */
 944         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
 945         if (!evtp)
 946                 return 0;
 947
 948         evtp->evt_arg1  = arg1;
 949         evtp->evt_arg2  = arg2;
 950         evtp->evt       = evt;
 951
 952         spin_lock_irqsave(&phba->hbalock, flags);
 953         list_add_tail(&evtp->evt_listp, &phba->work_list);
 954         spin_unlock_irqrestore(&phba->hbalock, flags);
 955
 956         lpfc_worker_wake_up(phba);
 957
 958         return 1;
 959 }
 960
 961 void
 962 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
 963 {
 964         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 965         struct lpfc_hba  *phba = vport->phba;
 966         struct lpfc_nodelist *ndlp, *next_ndlp;
 967
 968         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
 969                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 970                         continue;
 971
 972                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
 973                     ((vport->port_type == LPFC_NPIV_PORT) &&
 974                      ((ndlp->nlp_DID == NameServer_DID) ||
 975                       (ndlp->nlp_DID == FDMI_DID) ||
 976                       (ndlp->nlp_DID == Fabric_Cntl_DID))))
 977                         lpfc_unreg_rpi(vport, ndlp);
 978
 979                 /* Leave Fabric nodes alone on link down */
 980                 if ((phba->sli_rev < LPFC_SLI_REV4) &&
 981                     (!remove && ndlp->nlp_type & NLP_FABRIC))
 982                         continue;
 983
 984                 /* Notify transport of connectivity loss to trigger cleanup. */
 985                 if (phba->nvmet_support &&
 986                     ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
 987                         lpfc_nvmet_invalidate_host(phba, ndlp);
 988
 989                 lpfc_disc_state_machine(vport, ndlp, NULL,
 990                                         remove
 991                                         ? NLP_EVT_DEVICE_RM
 992                                         : NLP_EVT_DEVICE_RECOVERY);
 993         }
 994         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
 995                 if (phba->sli_rev == LPFC_SLI_REV4)
 996                         lpfc_sli4_unreg_all_rpis(vport);
 997                 lpfc_mbx_unreg_vpi(vport);
 998                 spin_lock_irq(shost->host_lock);
 999                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
1000                 spin_unlock_irq(shost->host_lock);
1001         }
1002 }
1003
1004 void
1005 lpfc_port_link_failure(struct lpfc_vport *vport)
1006 {
1007         lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
1008
1009         /* Cleanup any outstanding received buffers */
1010         lpfc_cleanup_rcv_buffers(vport);
1011
1012         /* Cleanup any outstanding RSCN activity */
1013         lpfc_els_flush_rscn(vport);
1014
1015         /* Cleanup any outstanding ELS commands */
1016         lpfc_els_flush_cmd(vport);
1017
1018         lpfc_cleanup_rpis(vport, 0);
1019
1020         /* Turn off discovery timer if its running */
1021         lpfc_can_disctmo(vport);
1022 }
1023
1024 void
1025 lpfc_linkdown_port(struct lpfc_vport *vport)
1026 {
1027         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1028
1029         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1030                 fc_host_post_event(shost, fc_get_event_number(),
1031                                    FCH_EVT_LINKDOWN, 0);
1032
1033         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1034                 "Link Down:       state:x%x rtry:x%x flg:x%x",
1035                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1036
1037         lpfc_port_link_failure(vport);
1038
1039         /* Stop delayed Nport discovery */
1040         spin_lock_irq(shost->host_lock);
1041         vport->fc_flag &= ~FC_DISC_DELAYED;
1042         spin_unlock_irq(shost->host_lock);
1043         del_timer_sync(&vport->delayed_disc_tmo);
1044 }
1045
1046 int
1047 lpfc_linkdown(struct lpfc_hba *phba)
1048 {
1049         struct lpfc_vport *vport = phba->pport;
1050         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1051         struct lpfc_vport **vports;
1052         LPFC_MBOXQ_t          *mb;
1053         int i;
1054
1055         if (phba->link_state == LPFC_LINK_DOWN)
1056                 return 0;
1057
1058         /* Block all SCSI stack I/Os */
1059         lpfc_scsi_dev_block(phba);
1060
1061         phba->defer_flogi_acc_flag = false;
1062
1063         spin_lock_irq(&phba->hbalock);
1064         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
1065         spin_unlock_irq(&phba->hbalock);
1066         if (phba->link_state > LPFC_LINK_DOWN) {
1067                 phba->link_state = LPFC_LINK_DOWN;
1068                 if (phba->sli4_hba.conf_trunk) {
1069                         phba->trunk_link.link0.state = 0;
1070                         phba->trunk_link.link1.state = 0;
1071                         phba->trunk_link.link2.state = 0;
1072                         phba->trunk_link.link3.state = 0;
1073                         phba->sli4_hba.link_state.logical_speed =
1074                                                 LPFC_LINK_SPEED_UNKNOWN;
1075                 }
1076                 spin_lock_irq(shost->host_lock);
1077                 phba->pport->fc_flag &= ~FC_LBIT;
1078                 spin_unlock_irq(shost->host_lock);
1079         }
1080         vports = lpfc_create_vport_work_array(phba);
1081         if (vports != NULL) {
1082                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
1083                         /* Issue a LINK DOWN event to all nodes */
1084                         lpfc_linkdown_port(vports[i]);
1085
1086                         vports[i]->fc_myDID = 0;
1087
1088                         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
1089                             (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1090                                 if (phba->nvmet_support)
1091                                         lpfc_nvmet_update_targetport(phba);
1092                                 else
1093                                         lpfc_nvme_update_localport(vports[i]);
1094                         }
1095                 }
1096         }
1097         lpfc_destroy_vport_work_array(phba, vports);
1098
1099         /* Clean up any SLI3 firmware default rpi's */
1100         if (phba->sli_rev > LPFC_SLI_REV3)
1101                 goto skip_unreg_did;
1102
1103         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1104         if (mb) {
1105                 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb);
1106                 mb->vport = vport;
1107                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1108                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
1109                     == MBX_NOT_FINISHED) {
1110                         mempool_free(mb, phba->mbox_mem_pool);
1111                 }
1112         }
1113
1114  skip_unreg_did:
1115         /* Setup myDID for link up if we are in pt2pt mode */
1116         if (phba->pport->fc_flag & FC_PT2PT) {
1117                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1118                 if (mb) {
1119                         lpfc_config_link(phba, mb);
1120                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1121                         mb->vport = vport;
1122                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
1123                             == MBX_NOT_FINISHED) {
1124                                 mempool_free(mb, phba->mbox_mem_pool);
1125                         }
1126                 }
1127                 spin_lock_irq(shost->host_lock);
1128                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
1129                 phba->pport->rcv_flogi_cnt = 0;
1130                 spin_unlock_irq(shost->host_lock);
1131         }
1132         return 0;
1133 }
1134
1135 static void
1136 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
1137 {
1138         struct lpfc_nodelist *ndlp;
1139
1140         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
1141                 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
1142
1143                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
1144                         continue;
1145                 if (ndlp->nlp_type & NLP_FABRIC) {
1146                         /* On Linkup its safe to clean up the ndlp
1147                          * from Fabric connections.
1148                          */
1149                         if (ndlp->nlp_DID != Fabric_DID)
1150                                 lpfc_unreg_rpi(vport, ndlp);
1151                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1152                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
1153                         /* Fail outstanding IO now since device is
1154                          * marked for PLOGI.
1155                          */
1156                         lpfc_unreg_rpi(vport, ndlp);
1157                 }
1158         }
1159 }
1160
1161 static void
1162 lpfc_linkup_port(struct lpfc_vport *vport)
1163 {
1164         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1165         struct lpfc_hba  *phba = vport->phba;
1166
1167         if ((vport->load_flag & FC_UNLOADING) != 0)
1168                 return;
1169
1170         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1171                 "Link Up:         top:x%x speed:x%x flg:x%x",
1172                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
1173
1174         /* If NPIV is not enabled, only bring the physical port up */
1175         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
1176                 (vport != phba->pport))
1177                 return;
1178
1179         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1180                 fc_host_post_event(shost, fc_get_event_number(),
1181                                    FCH_EVT_LINKUP, 0);
1182
1183         spin_lock_irq(shost->host_lock);
1184         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
1185                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
1186         vport->fc_flag |= FC_NDISC_ACTIVE;
1187         vport->fc_ns_retry = 0;
1188         spin_unlock_irq(shost->host_lock);
1189
1190         lpfc_linkup_cleanup_nodes(vport);
1191 }
1192
1193 static int
1194 lpfc_linkup(struct lpfc_hba *phba)
1195 {
1196         struct lpfc_vport **vports;
1197         int i;
1198         struct Scsi_Host  *shost = lpfc_shost_from_vport(phba->pport);
1199
1200         phba->link_state = LPFC_LINK_UP;
1201
1202         /* Unblock fabric iocbs if they are blocked */
1203         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
1204         del_timer_sync(&phba->fabric_block_timer);
1205
1206         vports = lpfc_create_vport_work_array(phba);
1207         if (vports != NULL)
1208                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
1209                         lpfc_linkup_port(vports[i]);
1210         lpfc_destroy_vport_work_array(phba, vports);
1211
1212         /* Clear the pport flogi counter in case the link down was
1213          * absorbed without an ACQE. No lock here - in worker thread
1214          * and discovery is synchronized.
1215          */
1216         spin_lock_irq(shost->host_lock);
1217         phba->pport->rcv_flogi_cnt = 0;
1218         spin_unlock_irq(shost->host_lock);
1219
1220         /* reinitialize initial FLOGI flag */
1221         phba->hba_flag &= ~(HBA_FLOGI_ISSUED);
1222         phba->defer_flogi_acc_flag = false;
1223
1224         return 0;
1225 }
1226
1227 /*
1228  * This routine handles processing a CLEAR_LA mailbox
1229  * command upon completion. It is setup in the LPFC_MBOXQ
1230  * as the completion routine when the command is
1231  * handed off to the SLI layer. SLI3 only.
1232  */
1233 static void
1234 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1235 {
1236         struct lpfc_vport *vport = pmb->vport;
1237         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1238         struct lpfc_sli   *psli = &phba->sli;
1239         MAILBOX_t *mb = &pmb->u.mb;
1240         uint32_t control;
1241
1242         /* Since we don't do discovery right now, turn these off here */
1243         psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1244         psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1245
1246         /* Check for error */
1247         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
1248                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
1249                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1250                                  "0320 CLEAR_LA mbxStatus error x%x hba "
1251                                  "state x%x\n",
1252                                  mb->mbxStatus, vport->port_state);
1253                 phba->link_state = LPFC_HBA_ERROR;
1254                 goto out;
1255         }
1256
1257         if (vport->port_type == LPFC_PHYSICAL_PORT)
1258                 phba->link_state = LPFC_HBA_READY;
1259
1260         spin_lock_irq(&phba->hbalock);
1261         psli->sli_flag |= LPFC_PROCESS_LA;
1262         control = readl(phba->HCregaddr);
1263         control |= HC_LAINT_ENA;
1264         writel(control, phba->HCregaddr);
1265         readl(phba->HCregaddr); /* flush */
1266         spin_unlock_irq(&phba->hbalock);
1267         mempool_free(pmb, phba->mbox_mem_pool);
1268         return;
1269
1270 out:
1271         /* Device Discovery completes */
1272         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1273                          "0225 Device Discovery completes\n");
1274         mempool_free(pmb, phba->mbox_mem_pool);
1275
1276         spin_lock_irq(shost->host_lock);
1277         vport->fc_flag &= ~FC_ABORT_DISCOVERY;
1278         spin_unlock_irq(shost->host_lock);
1279
1280         lpfc_can_disctmo(vport);
1281
1282         /* turn on Link Attention interrupts */
1283
1284         spin_lock_irq(&phba->hbalock);
1285         psli->sli_flag |= LPFC_PROCESS_LA;
1286         control = readl(phba->HCregaddr);
1287         control |= HC_LAINT_ENA;
1288         writel(control, phba->HCregaddr);
1289         readl(phba->HCregaddr); /* flush */
1290         spin_unlock_irq(&phba->hbalock);
1291
1292         return;
1293 }
1294
1295 void
1296 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1297 {
1298         struct lpfc_vport *vport = pmb->vport;
1299         LPFC_MBOXQ_t *sparam_mb;
1300         struct lpfc_dmabuf *sparam_mp;
1301         u16 status = pmb->u.mb.mbxStatus;
1302         int rc;
1303
1304         mempool_free(pmb, phba->mbox_mem_pool);
1305
1306         if (status)
1307                 goto out;
1308
1309         /* don't perform discovery for SLI4 loopback diagnostic test */
1310         if ((phba->sli_rev == LPFC_SLI_REV4) &&
1311             !(phba->hba_flag & HBA_FCOE_MODE) &&
1312             (phba->link_flag & LS_LOOPBACK_MODE))
1313                 return;
1314
1315         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
1316             vport->fc_flag & FC_PUBLIC_LOOP &&
1317             !(vport->fc_flag & FC_LBIT)) {
1318                         /* Need to wait for FAN - use discovery timer
1319                          * for timeout.  port_state is identically
1320                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
1321                          */
1322                         lpfc_set_disctmo(vport);
1323                         return;
1324         }
1325
1326         /* Start discovery by sending a FLOGI. port_state is identically
1327          * LPFC_FLOGI while waiting for FLOGI cmpl.
1328          */
1329         if (vport->port_state != LPFC_FLOGI) {
1330                 /* Issue MBX_READ_SPARAM to update CSPs before FLOGI if
1331                  * bb-credit recovery is in place.
1332                  */
1333                 if (phba->bbcredit_support && phba->cfg_enable_bbcr &&
1334                     !(phba->link_flag & LS_LOOPBACK_MODE)) {
1335                         sparam_mb = mempool_alloc(phba->mbox_mem_pool,
1336                                                   GFP_KERNEL);
1337                         if (!sparam_mb)
1338                                 goto sparam_out;
1339
1340                         rc = lpfc_read_sparam(phba, sparam_mb, 0);
1341                         if (rc) {
1342                                 mempool_free(sparam_mb, phba->mbox_mem_pool);
1343                                 goto sparam_out;
1344                         }
1345                         sparam_mb->vport = vport;
1346                         sparam_mb->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1347                         rc = lpfc_sli_issue_mbox(phba, sparam_mb, MBX_NOWAIT);
1348                         if (rc == MBX_NOT_FINISHED) {
1349                                 sparam_mp = (struct lpfc_dmabuf *)
1350                                                 sparam_mb->ctx_buf;
1351                                 lpfc_mbuf_free(phba, sparam_mp->virt,
1352                                                sparam_mp->phys);
1353                                 kfree(sparam_mp);
1354                                 sparam_mb->ctx_buf = NULL;
1355                                 mempool_free(sparam_mb, phba->mbox_mem_pool);
1356                                 goto sparam_out;
1357                         }
1358
1359                         phba->hba_flag |= HBA_DEFER_FLOGI;
1360                 }  else {
1361                         lpfc_initial_flogi(vport);
1362                 }
1363         } else {
1364                 if (vport->fc_flag & FC_PT2PT)
1365                         lpfc_disc_start(vport);
1366         }
1367         return;
1368
1369 out:
1370         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1371                          "0306 CONFIG_LINK mbxStatus error x%x HBA state x%x\n",
1372                          status, vport->port_state);
1373
1374 sparam_out:
1375         lpfc_linkdown(phba);
1376
1377         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1378                          "0200 CONFIG_LINK bad hba state x%x\n",
1379                          vport->port_state);
1380
1381         lpfc_issue_clear_la(phba, vport);
1382         return;
1383 }
1384
1385 /**
1386  * lpfc_sli4_clear_fcf_rr_bmask
1387  * @phba: pointer to the struct lpfc_hba for this port.
1388  * This fucnction resets the round robin bit mask and clears the
1389  * fcf priority list. The list deletions are done while holding the
1390  * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared
1391  * from the lpfc_fcf_pri record.
1392  **/
1393 void
1394 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba)
1395 {
1396         struct lpfc_fcf_pri *fcf_pri;
1397         struct lpfc_fcf_pri *next_fcf_pri;
1398         memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask));
1399         spin_lock_irq(&phba->hbalock);
1400         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
1401                                 &phba->fcf.fcf_pri_list, list) {
1402                 list_del_init(&fcf_pri->list);
1403                 fcf_pri->fcf_rec.flag = 0;
1404         }
1405         spin_unlock_irq(&phba->hbalock);
1406 }
1407 static void
1408 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1409 {
1410         struct lpfc_vport *vport = mboxq->vport;
1411
1412         if (mboxq->u.mb.mbxStatus) {
1413                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1414                                  "2017 REG_FCFI mbxStatus error x%x "
1415                                  "HBA state x%x\n", mboxq->u.mb.mbxStatus,
1416                                  vport->port_state);
1417                 goto fail_out;
1418         }
1419
1420         /* Start FCoE discovery by sending a FLOGI. */
1421         phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1422         /* Set the FCFI registered flag */
1423         spin_lock_irq(&phba->hbalock);
1424         phba->fcf.fcf_flag |= FCF_REGISTERED;
1425         spin_unlock_irq(&phba->hbalock);
1426
1427         /* If there is a pending FCoE event, restart FCF table scan. */
1428         if ((!(phba->hba_flag & FCF_RR_INPROG)) &&
1429                 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF))
1430                 goto fail_out;
1431
1432         /* Mark successful completion of FCF table scan */
1433         spin_lock_irq(&phba->hbalock);
1434         phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1435         phba->hba_flag &= ~FCF_TS_INPROG;
1436         if (vport->port_state != LPFC_FLOGI) {
1437                 phba->hba_flag |= FCF_RR_INPROG;
1438                 spin_unlock_irq(&phba->hbalock);
1439                 lpfc_issue_init_vfi(vport);
1440                 goto out;
1441         }
1442         spin_unlock_irq(&phba->hbalock);
1443         goto out;
1444
1445 fail_out:
1446         spin_lock_irq(&phba->hbalock);
1447         phba->hba_flag &= ~FCF_RR_INPROG;
1448         spin_unlock_irq(&phba->hbalock);
1449 out:
1450         mempool_free(mboxq, phba->mbox_mem_pool);
1451 }
1452
1453 /**
1454  * lpfc_fab_name_match - Check if the fcf fabric name match.
1455  * @fab_name: pointer to fabric name.
1456  * @new_fcf_record: pointer to fcf record.
1457  *
1458  * This routine compare the fcf record's fabric name with provided
1459  * fabric name. If the fabric name are identical this function
1460  * returns 1 else return 0.
1461  **/
1462 static uint32_t
1463 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1464 {
1465         if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1466                 return 0;
1467         if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1468                 return 0;
1469         if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1470                 return 0;
1471         if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1472                 return 0;
1473         if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1474                 return 0;
1475         if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1476                 return 0;
1477         if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1478                 return 0;
1479         if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1480                 return 0;
1481         return 1;
1482 }
1483
1484 /**
1485  * lpfc_sw_name_match - Check if the fcf switch name match.
1486  * @sw_name: pointer to switch name.
1487  * @new_fcf_record: pointer to fcf record.
1488  *
1489  * This routine compare the fcf record's switch name with provided
1490  * switch name. If the switch name are identical this function
1491  * returns 1 else return 0.
1492  **/
1493 static uint32_t
1494 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1495 {
1496         if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1497                 return 0;
1498         if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1499                 return 0;
1500         if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1501                 return 0;
1502         if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1503                 return 0;
1504         if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1505                 return 0;
1506         if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1507                 return 0;
1508         if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1509                 return 0;
1510         if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1511                 return 0;
1512         return 1;
1513 }
1514
1515 /**
1516  * lpfc_mac_addr_match - Check if the fcf mac address match.
1517  * @mac_addr: pointer to mac address.
1518  * @new_fcf_record: pointer to fcf record.
1519  *
1520  * This routine compare the fcf record's mac address with HBA's
1521  * FCF mac address. If the mac addresses are identical this function
1522  * returns 1 else return 0.
1523  **/
1524 static uint32_t
1525 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1526 {
1527         if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1528                 return 0;
1529         if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1530                 return 0;
1531         if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1532                 return 0;
1533         if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1534                 return 0;
1535         if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1536                 return 0;
1537         if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1538                 return 0;
1539         return 1;
1540 }
1541
1542 static bool
1543 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1544 {
1545         return (curr_vlan_id == new_vlan_id);
1546 }
1547
1548 /**
1549  * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record.
1550  * @phba: pointer to lpfc hba data structure.
1551  * @fcf_index: Index for the lpfc_fcf_record.
1552  * @new_fcf_record: pointer to hba fcf record.
1553  *
1554  * This routine updates the driver FCF priority record from the new HBA FCF
1555  * record. The hbalock is asserted held in the code path calling this
1556  * routine.
1557  **/
1558 static void
1559 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index,
1560                                  struct fcf_record *new_fcf_record
1561                                  )
1562 {
1563         struct lpfc_fcf_pri *fcf_pri;
1564
1565         fcf_pri = &phba->fcf.fcf_pri[fcf_index];
1566         fcf_pri->fcf_rec.fcf_index = fcf_index;
1567         /* FCF record priority */
1568         fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
1569
1570 }
1571
1572 /**
1573  * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1574  * @fcf_rec: pointer to driver fcf record.
1575  * @new_fcf_record: pointer to fcf record.
1576  *
1577  * This routine copies the FCF information from the FCF
1578  * record to lpfc_hba data structure.
1579  **/
1580 static void
1581 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1582                      struct fcf_record *new_fcf_record)
1583 {
1584         /* Fabric name */
1585         fcf_rec->fabric_name[0] =
1586                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1587         fcf_rec->fabric_name[1] =
1588                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1589         fcf_rec->fabric_name[2] =
1590                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1591         fcf_rec->fabric_name[3] =
1592                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1593         fcf_rec->fabric_name[4] =
1594                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1595         fcf_rec->fabric_name[5] =
1596                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1597         fcf_rec->fabric_name[6] =
1598                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1599         fcf_rec->fabric_name[7] =
1600                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1601         /* Mac address */
1602         fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1603         fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1604         fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1605         fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1606         fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1607         fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1608         /* FCF record index */
1609         fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1610         /* FCF record priority */
1611         fcf_rec->priority = new_fcf_record->fip_priority;
1612         /* Switch name */
1613         fcf_rec->switch_name[0] =
1614                 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1615         fcf_rec->switch_name[1] =
1616                 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1617         fcf_rec->switch_name[2] =
1618                 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1619         fcf_rec->switch_name[3] =
1620                 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1621         fcf_rec->switch_name[4] =
1622                 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1623         fcf_rec->switch_name[5] =
1624                 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1625         fcf_rec->switch_name[6] =
1626                 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1627         fcf_rec->switch_name[7] =
1628                 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1629 }
1630
1631 /**
1632  * __lpfc_update_fcf_record - Update driver fcf record
1633  * @phba: pointer to lpfc hba data structure.
1634  * @fcf_rec: pointer to driver fcf record.
1635  * @new_fcf_record: pointer to hba fcf record.
1636  * @addr_mode: address mode to be set to the driver fcf record.
1637  * @vlan_id: vlan tag to be set to the driver fcf record.
1638  * @flag: flag bits to be set to the driver fcf record.
1639  *
1640  * This routine updates the driver FCF record from the new HBA FCF record
1641  * together with the address mode, vlan_id, and other informations. This
1642  * routine is called with the hbalock held.
1643  **/
1644 static void
1645 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1646                        struct fcf_record *new_fcf_record, uint32_t addr_mode,
1647                        uint16_t vlan_id, uint32_t flag)
1648 {
1649         lockdep_assert_held(&phba->hbalock);
1650
1651         /* Copy the fields from the HBA's FCF record */
1652         lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1653         /* Update other fields of driver FCF record */
1654         fcf_rec->addr_mode = addr_mode;
1655         fcf_rec->vlan_id = vlan_id;
1656         fcf_rec->flag |= (flag | RECORD_VALID);
1657         __lpfc_update_fcf_record_pri(phba,
1658                 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record),
1659                                  new_fcf_record);
1660 }
1661
1662 /**
1663  * lpfc_register_fcf - Register the FCF with hba.
1664  * @phba: pointer to lpfc hba data structure.
1665  *
1666  * This routine issues a register fcfi mailbox command to register
1667  * the fcf with HBA.
1668  **/
1669 static void
1670 lpfc_register_fcf(struct lpfc_hba *phba)
1671 {
1672         LPFC_MBOXQ_t *fcf_mbxq;
1673         int rc;
1674
1675         spin_lock_irq(&phba->hbalock);
1676         /* If the FCF is not available do nothing. */
1677         if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1678                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1679                 spin_unlock_irq(&phba->hbalock);
1680                 return;
1681         }
1682
1683         /* The FCF is already registered, start discovery */
1684         if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1685                 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1686                 phba->hba_flag &= ~FCF_TS_INPROG;
1687                 if (phba->pport->port_state != LPFC_FLOGI &&
1688                     phba->pport->fc_flag & FC_FABRIC) {
1689                         phba->hba_flag |= FCF_RR_INPROG;
1690                         spin_unlock_irq(&phba->hbalock);
1691                         lpfc_initial_flogi(phba->pport);
1692                         return;
1693                 }
1694                 spin_unlock_irq(&phba->hbalock);
1695                 return;
1696         }
1697         spin_unlock_irq(&phba->hbalock);
1698
1699         fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1700         if (!fcf_mbxq) {
1701                 spin_lock_irq(&phba->hbalock);
1702                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1703                 spin_unlock_irq(&phba->hbalock);
1704                 return;
1705         }
1706
1707         lpfc_reg_fcfi(phba, fcf_mbxq);
1708         fcf_mbxq->vport = phba->pport;
1709         fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1710         rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1711         if (rc == MBX_NOT_FINISHED) {
1712                 spin_lock_irq(&phba->hbalock);
1713                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1714                 spin_unlock_irq(&phba->hbalock);
1715                 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1716         }
1717
1718         return;
1719 }
1720
1721 /**
1722  * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1723  * @phba: pointer to lpfc hba data structure.
1724  * @new_fcf_record: pointer to fcf record.
1725  * @boot_flag: Indicates if this record used by boot bios.
1726  * @addr_mode: The address mode to be used by this FCF
1727  * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1728  *
1729  * This routine compare the fcf record with connect list obtained from the
1730  * config region to decide if this FCF can be used for SAN discovery. It returns
1731  * 1 if this record can be used for SAN discovery else return zero. If this FCF
1732  * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1733  * is used by boot bios and addr_mode will indicate the addressing mode to be
1734  * used for this FCF when the function returns.
1735  * If the FCF record need to be used with a particular vlan id, the vlan is
1736  * set in the vlan_id on return of the function. If not VLAN tagging need to
1737  * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
1738  **/
1739 static int
1740 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1741                         struct fcf_record *new_fcf_record,
1742                         uint32_t *boot_flag, uint32_t *addr_mode,
1743                         uint16_t *vlan_id)
1744 {
1745         struct lpfc_fcf_conn_entry *conn_entry;
1746         int i, j, fcf_vlan_id = 0;
1747
1748         /* Find the lowest VLAN id in the FCF record */
1749         for (i = 0; i < 512; i++) {
1750                 if (new_fcf_record->vlan_bitmap[i]) {
1751                         fcf_vlan_id = i * 8;
1752                         j = 0;
1753                         while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1754                                 j++;
1755                                 fcf_vlan_id++;
1756                         }
1757                         break;
1758                 }
1759         }
1760
1761         /* FCF not valid/available or solicitation in progress */
1762         if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1763             !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) ||
1764             bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record))
1765                 return 0;
1766
1767         if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1768                 *boot_flag = 0;
1769                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1770                                 new_fcf_record);
1771                 if (phba->valid_vlan)
1772                         *vlan_id = phba->vlan_id;
1773                 else
1774                         *vlan_id = LPFC_FCOE_NULL_VID;
1775                 return 1;
1776         }
1777
1778         /*
1779          * If there are no FCF connection table entry, driver connect to all
1780          * FCFs.
1781          */
1782         if (list_empty(&phba->fcf_conn_rec_list)) {
1783                 *boot_flag = 0;
1784                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1785                         new_fcf_record);
1786
1787                 /*
1788                  * When there are no FCF connect entries, use driver's default
1789                  * addressing mode - FPMA.
1790                  */
1791                 if (*addr_mode & LPFC_FCF_FPMA)
1792                         *addr_mode = LPFC_FCF_FPMA;
1793
1794                 /* If FCF record report a vlan id use that vlan id */
1795                 if (fcf_vlan_id)
1796                         *vlan_id = fcf_vlan_id;
1797                 else
1798                         *vlan_id = LPFC_FCOE_NULL_VID;
1799                 return 1;
1800         }
1801
1802         list_for_each_entry(conn_entry,
1803                             &phba->fcf_conn_rec_list, list) {
1804                 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1805                         continue;
1806
1807                 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1808                         !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1809                                              new_fcf_record))
1810                         continue;
1811                 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
1812                         !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
1813                                             new_fcf_record))
1814                         continue;
1815                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1816                         /*
1817                          * If the vlan bit map does not have the bit set for the
1818                          * vlan id to be used, then it is not a match.
1819                          */
1820                         if (!(new_fcf_record->vlan_bitmap
1821                                 [conn_entry->conn_rec.vlan_tag / 8] &
1822                                 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
1823                                 continue;
1824                 }
1825
1826                 /*
1827                  * If connection record does not support any addressing mode,
1828                  * skip the FCF record.
1829                  */
1830                 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
1831                         & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
1832                         continue;
1833
1834                 /*
1835                  * Check if the connection record specifies a required
1836                  * addressing mode.
1837                  */
1838                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1839                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
1840
1841                         /*
1842                          * If SPMA required but FCF not support this continue.
1843                          */
1844                         if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1845                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1846                                         new_fcf_record) & LPFC_FCF_SPMA))
1847                                 continue;
1848
1849                         /*
1850                          * If FPMA required but FCF not support this continue.
1851                          */
1852                         if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1853                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1854                                 new_fcf_record) & LPFC_FCF_FPMA))
1855                                 continue;
1856                 }
1857
1858                 /*
1859                  * This fcf record matches filtering criteria.
1860                  */
1861                 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
1862                         *boot_flag = 1;
1863                 else
1864                         *boot_flag = 0;
1865
1866                 /*
1867                  * If user did not specify any addressing mode, or if the
1868                  * preferred addressing mode specified by user is not supported
1869                  * by FCF, allow fabric to pick the addressing mode.
1870                  */
1871                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1872                                 new_fcf_record);
1873                 /*
1874                  * If the user specified a required address mode, assign that
1875                  * address mode
1876                  */
1877                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1878                         (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
1879                         *addr_mode = (conn_entry->conn_rec.flags &
1880                                 FCFCNCT_AM_SPMA) ?
1881                                 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
1882                 /*
1883                  * If the user specified a preferred address mode, use the
1884                  * addr mode only if FCF support the addr_mode.
1885                  */
1886                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1887                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1888                         (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1889                         (*addr_mode & LPFC_FCF_SPMA))
1890                                 *addr_mode = LPFC_FCF_SPMA;
1891                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1892                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1893                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1894                         (*addr_mode & LPFC_FCF_FPMA))
1895                                 *addr_mode = LPFC_FCF_FPMA;
1896
1897                 /* If matching connect list has a vlan id, use it */
1898                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
1899                         *vlan_id = conn_entry->conn_rec.vlan_tag;
1900                 /*
1901                  * If no vlan id is specified in connect list, use the vlan id
1902                  * in the FCF record
1903                  */
1904                 else if (fcf_vlan_id)
1905                         *vlan_id = fcf_vlan_id;
1906                 else
1907                         *vlan_id = LPFC_FCOE_NULL_VID;
1908
1909                 return 1;
1910         }
1911
1912         return 0;
1913 }
1914
1915 /**
1916  * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
1917  * @phba: pointer to lpfc hba data structure.
1918  * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
1919  *
1920  * This function check if there is any fcoe event pending while driver
1921  * scan FCF entries. If there is any pending event, it will restart the
1922  * FCF saning and return 1 else return 0.
1923  */
1924 int
1925 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
1926 {
1927         /*
1928          * If the Link is up and no FCoE events while in the
1929          * FCF discovery, no need to restart FCF discovery.
1930          */
1931         if ((phba->link_state  >= LPFC_LINK_UP) &&
1932             (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
1933                 return 0;
1934
1935         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1936                         "2768 Pending link or FCF event during current "
1937                         "handling of the previous event: link_state:x%x, "
1938                         "evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
1939                         phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
1940                         phba->fcoe_eventtag);
1941
1942         spin_lock_irq(&phba->hbalock);
1943         phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
1944         spin_unlock_irq(&phba->hbalock);
1945
1946         if (phba->link_state >= LPFC_LINK_UP) {
1947                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1948                                 "2780 Restart FCF table scan due to "
1949                                 "pending FCF event:evt_tag_at_scan:x%x, "
1950                                 "evt_tag_current:x%x\n",
1951                                 phba->fcoe_eventtag_at_fcf_scan,
1952                                 phba->fcoe_eventtag);
1953                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
1954         } else {
1955                 /*
1956                  * Do not continue FCF discovery and clear FCF_TS_INPROG
1957                  * flag
1958                  */
1959                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1960                                 "2833 Stop FCF discovery process due to link "
1961                                 "state change (x%x)\n", phba->link_state);
1962                 spin_lock_irq(&phba->hbalock);
1963                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1964                 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
1965                 spin_unlock_irq(&phba->hbalock);
1966         }
1967
1968         /* Unregister the currently registered FCF if required */
1969         if (unreg_fcf) {
1970                 spin_lock_irq(&phba->hbalock);
1971                 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
1972                 spin_unlock_irq(&phba->hbalock);
1973                 lpfc_sli4_unregister_fcf(phba);
1974         }
1975         return 1;
1976 }
1977
1978 /**
1979  * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
1980  * @phba: pointer to lpfc hba data structure.
1981  * @fcf_cnt: number of eligible fcf record seen so far.
1982  *
1983  * This function makes an running random selection decision on FCF record to
1984  * use through a sequence of @fcf_cnt eligible FCF records with equal
1985  * probability. To perform integer manunipulation of random numbers with
1986  * size unit32_t, the lower 16 bits of the 32-bit random number returned
1987  * from prandom_u32() are taken as the random random number generated.
1988  *
1989  * Returns true when outcome is for the newly read FCF record should be
1990  * chosen; otherwise, return false when outcome is for keeping the previously
1991  * chosen FCF record.
1992  **/
1993 static bool
1994 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
1995 {
1996         uint32_t rand_num;
1997
1998         /* Get 16-bit uniform random number */
1999         rand_num = 0xFFFF & prandom_u32();
2000
2001         /* Decision with probability 1/fcf_cnt */
2002         if ((fcf_cnt * rand_num) < 0xFFFF)
2003                 return true;
2004         else
2005                 return false;
2006 }
2007
2008 /**
2009  * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
2010  * @phba: pointer to lpfc hba data structure.
2011  * @mboxq: pointer to mailbox object.
2012  * @next_fcf_index: pointer to holder of next fcf index.
2013  *
2014  * This routine parses the non-embedded fcf mailbox command by performing the
2015  * necessarily error checking, non-embedded read FCF record mailbox command
2016  * SGE parsing, and endianness swapping.
2017  *
2018  * Returns the pointer to the new FCF record in the non-embedded mailbox
2019  * command DMA memory if successfully, other NULL.
2020  */
2021 static struct fcf_record *
2022 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
2023                              uint16_t *next_fcf_index)
2024 {
2025         void *virt_addr;
2026         struct lpfc_mbx_sge sge;
2027         struct lpfc_mbx_read_fcf_tbl *read_fcf;
2028         uint32_t shdr_status, shdr_add_status, if_type;
2029         union lpfc_sli4_cfg_shdr *shdr;
2030         struct fcf_record *new_fcf_record;
2031
2032         /* Get the first SGE entry from the non-embedded DMA memory. This
2033          * routine only uses a single SGE.
2034          */
2035         lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
2036         if (unlikely(!mboxq->sge_array)) {
2037                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2038                                 "2524 Failed to get the non-embedded SGE "
2039                                 "virtual address\n");
2040                 return NULL;
2041         }
2042         virt_addr = mboxq->sge_array->addr[0];
2043
2044         shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
2045         lpfc_sli_pcimem_bcopy(shdr, shdr,
2046                               sizeof(union lpfc_sli4_cfg_shdr));
2047         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
2048         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
2049         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
2050         if (shdr_status || shdr_add_status) {
2051                 if (shdr_status == STATUS_FCF_TABLE_EMPTY ||
2052                                         if_type == LPFC_SLI_INTF_IF_TYPE_2)
2053                         lpfc_printf_log(phba, KERN_ERR,
2054                                         LOG_TRACE_EVENT,
2055                                         "2726 READ_FCF_RECORD Indicates empty "
2056                                         "FCF table.\n");
2057                 else
2058                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2059                                         "2521 READ_FCF_RECORD mailbox failed "
2060                                         "with status x%x add_status x%x, "
2061                                         "mbx\n", shdr_status, shdr_add_status);
2062                 return NULL;
2063         }
2064
2065         /* Interpreting the returned information of the FCF record */
2066         read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
2067         lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
2068                               sizeof(struct lpfc_mbx_read_fcf_tbl));
2069         *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
2070         new_fcf_record = (struct fcf_record *)(virt_addr +
2071                           sizeof(struct lpfc_mbx_read_fcf_tbl));
2072         lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
2073                                 offsetof(struct fcf_record, vlan_bitmap));
2074         new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
2075         new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
2076
2077         return new_fcf_record;
2078 }
2079
2080 /**
2081  * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
2082  * @phba: pointer to lpfc hba data structure.
2083  * @fcf_record: pointer to the fcf record.
2084  * @vlan_id: the lowest vlan identifier associated to this fcf record.
2085  * @next_fcf_index: the index to the next fcf record in hba's fcf table.
2086  *
2087  * This routine logs the detailed FCF record if the LOG_FIP loggin is
2088  * enabled.
2089  **/
2090 static void
2091 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
2092                               struct fcf_record *fcf_record,
2093                               uint16_t vlan_id,
2094                               uint16_t next_fcf_index)
2095 {
2096         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2097                         "2764 READ_FCF_RECORD:\n"
2098                         "\tFCF_Index     : x%x\n"
2099                         "\tFCF_Avail     : x%x\n"
2100                         "\tFCF_Valid     : x%x\n"
2101                         "\tFCF_SOL       : x%x\n"
2102                         "\tFIP_Priority  : x%x\n"
2103                         "\tMAC_Provider  : x%x\n"
2104                         "\tLowest VLANID : x%x\n"
2105                         "\tFCF_MAC Addr  : x%x:%x:%x:%x:%x:%x\n"
2106                         "\tFabric_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
2107                         "\tSwitch_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
2108                         "\tNext_FCF_Index: x%x\n",
2109                         bf_get(lpfc_fcf_record_fcf_index, fcf_record),
2110                         bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
2111                         bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
2112                         bf_get(lpfc_fcf_record_fcf_sol, fcf_record),
2113                         fcf_record->fip_priority,
2114                         bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
2115                         vlan_id,
2116                         bf_get(lpfc_fcf_record_mac_0, fcf_record),
2117                         bf_get(lpfc_fcf_record_mac_1, fcf_record),
2118                         bf_get(lpfc_fcf_record_mac_2, fcf_record),
2119                         bf_get(lpfc_fcf_record_mac_3, fcf_record),
2120                         bf_get(lpfc_fcf_record_mac_4, fcf_record),
2121                         bf_get(lpfc_fcf_record_mac_5, fcf_record),
2122                         bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
2123                         bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
2124                         bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
2125                         bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
2126                         bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
2127                         bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
2128                         bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
2129                         bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
2130                         bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
2131                         bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
2132                         bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
2133                         bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
2134                         bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
2135                         bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
2136                         bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
2137                         bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
2138                         next_fcf_index);
2139 }
2140
2141 /**
2142  * lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
2143  * @phba: pointer to lpfc hba data structure.
2144  * @fcf_rec: pointer to an existing FCF record.
2145  * @new_fcf_record: pointer to a new FCF record.
2146  * @new_vlan_id: vlan id from the new FCF record.
2147  *
2148  * This function performs matching test of a new FCF record against an existing
2149  * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
2150  * will not be used as part of the FCF record matching criteria.
2151  *
2152  * Returns true if all the fields matching, otherwise returns false.
2153  */
2154 static bool
2155 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
2156                            struct lpfc_fcf_rec *fcf_rec,
2157                            struct fcf_record *new_fcf_record,
2158                            uint16_t new_vlan_id)
2159 {
2160         if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
2161                 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
2162                         return false;
2163         if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
2164                 return false;
2165         if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
2166                 return false;
2167         if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
2168                 return false;
2169         if (fcf_rec->priority != new_fcf_record->fip_priority)
2170                 return false;
2171         return true;
2172 }
2173
2174 /**
2175  * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf
2176  * @vport: Pointer to vport object.
2177  * @fcf_index: index to next fcf.
2178  *
2179  * This function processing the roundrobin fcf failover to next fcf index.
2180  * When this function is invoked, there will be a current fcf registered
2181  * for flogi.
2182  * Return: 0 for continue retrying flogi on currently registered fcf;
2183  *         1 for stop flogi on currently registered fcf;
2184  */
2185 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index)
2186 {
2187         struct lpfc_hba *phba = vport->phba;
2188         int rc;
2189
2190         if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
2191                 spin_lock_irq(&phba->hbalock);
2192                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2193                         spin_unlock_irq(&phba->hbalock);
2194                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2195                                         "2872 Devloss tmo with no eligible "
2196                                         "FCF, unregister in-use FCF (x%x) "
2197                                         "and rescan FCF table\n",
2198                                         phba->fcf.current_rec.fcf_indx);
2199                         lpfc_unregister_fcf_rescan(phba);
2200                         goto stop_flogi_current_fcf;
2201                 }
2202                 /* Mark the end to FLOGI roundrobin failover */
2203                 phba->hba_flag &= ~FCF_RR_INPROG;
2204                 /* Allow action to new fcf asynchronous event */
2205                 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
2206                 spin_unlock_irq(&phba->hbalock);
2207                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2208                                 "2865 No FCF available, stop roundrobin FCF "
2209                                 "failover and change port state:x%x/x%x\n",
2210                                 phba->pport->port_state, LPFC_VPORT_UNKNOWN);
2211                 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
2212
2213                 if (!phba->fcf.fcf_redisc_attempted) {
2214                         lpfc_unregister_fcf(phba);
2215
2216                         rc = lpfc_sli4_redisc_fcf_table(phba);
2217                         if (!rc) {
2218                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2219                                                 "3195 Rediscover FCF table\n");
2220                                 phba->fcf.fcf_redisc_attempted = 1;
2221                                 lpfc_sli4_clear_fcf_rr_bmask(phba);
2222                         } else {
2223                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2224                                                 "3196 Rediscover FCF table "
2225                                                 "failed. Status:x%x\n", rc);
2226                         }
2227                 } else {
2228                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2229                                         "3197 Already rediscover FCF table "
2230                                         "attempted. No more retry\n");
2231                 }
2232                 goto stop_flogi_current_fcf;
2233         } else {
2234                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS,
2235                                 "2794 Try FLOGI roundrobin FCF failover to "
2236                                 "(x%x)\n", fcf_index);
2237                 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index);
2238                 if (rc)
2239                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
2240                                         "2761 FLOGI roundrobin FCF failover "
2241                                         "failed (rc:x%x) to read FCF (x%x)\n",
2242                                         rc, phba->fcf.current_rec.fcf_indx);
2243                 else
2244                         goto stop_flogi_current_fcf;
2245         }
2246         return 0;
2247
2248 stop_flogi_current_fcf:
2249         lpfc_can_disctmo(vport);
2250         return 1;
2251 }
2252
2253 /**
2254  * lpfc_sli4_fcf_pri_list_del
2255  * @phba: pointer to lpfc hba data structure.
2256  * @fcf_index: the index of the fcf record to delete
2257  * This routine checks the on list flag of the fcf_index to be deleted.
2258  * If it is one the list then it is removed from the list, and the flag
2259  * is cleared. This routine grab the hbalock before removing the fcf
2260  * record from the list.
2261  **/
2262 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba,
2263                         uint16_t fcf_index)
2264 {
2265         struct lpfc_fcf_pri *new_fcf_pri;
2266
2267         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2268         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2269                 "3058 deleting idx x%x pri x%x flg x%x\n",
2270                 fcf_index, new_fcf_pri->fcf_rec.priority,
2271                  new_fcf_pri->fcf_rec.flag);
2272         spin_lock_irq(&phba->hbalock);
2273         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) {
2274                 if (phba->fcf.current_rec.priority ==
2275                                 new_fcf_pri->fcf_rec.priority)
2276                         phba->fcf.eligible_fcf_cnt--;
2277                 list_del_init(&new_fcf_pri->list);
2278                 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST;
2279         }
2280         spin_unlock_irq(&phba->hbalock);
2281 }
2282
2283 /**
2284  * lpfc_sli4_set_fcf_flogi_fail
2285  * @phba: pointer to lpfc hba data structure.
2286  * @fcf_index: the index of the fcf record to update
2287  * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED
2288  * flag so the the round robin slection for the particular priority level
2289  * will try a different fcf record that does not have this bit set.
2290  * If the fcf record is re-read for any reason this flag is cleared brfore
2291  * adding it to the priority list.
2292  **/
2293 void
2294 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index)
2295 {
2296         struct lpfc_fcf_pri *new_fcf_pri;
2297         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2298         spin_lock_irq(&phba->hbalock);
2299         new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED;
2300         spin_unlock_irq(&phba->hbalock);
2301 }
2302
2303 /**
2304  * lpfc_sli4_fcf_pri_list_add
2305  * @phba: pointer to lpfc hba data structure.
2306  * @fcf_index: the index of the fcf record to add
2307  * @new_fcf_record: pointer to a new FCF record.
2308  * This routine checks the priority of the fcf_index to be added.
2309  * If it is a lower priority than the current head of the fcf_pri list
2310  * then it is added to the list in the right order.
2311  * If it is the same priority as the current head of the list then it
2312  * is added to the head of the list and its bit in the rr_bmask is set.
2313  * If the fcf_index to be added is of a higher priority than the current
2314  * head of the list then the rr_bmask is cleared, its bit is set in the
2315  * rr_bmask and it is added to the head of the list.
2316  * returns:
2317  * 0=success 1=failure
2318  **/
2319 static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba,
2320         uint16_t fcf_index,
2321         struct fcf_record *new_fcf_record)
2322 {
2323         uint16_t current_fcf_pri;
2324         uint16_t last_index;
2325         struct lpfc_fcf_pri *fcf_pri;
2326         struct lpfc_fcf_pri *next_fcf_pri;
2327         struct lpfc_fcf_pri *new_fcf_pri;
2328         int ret;
2329
2330         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2331         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2332                 "3059 adding idx x%x pri x%x flg x%x\n",
2333                 fcf_index, new_fcf_record->fip_priority,
2334                  new_fcf_pri->fcf_rec.flag);
2335         spin_lock_irq(&phba->hbalock);
2336         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST)
2337                 list_del_init(&new_fcf_pri->list);
2338         new_fcf_pri->fcf_rec.fcf_index = fcf_index;
2339         new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
2340         if (list_empty(&phba->fcf.fcf_pri_list)) {
2341                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2342                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2343                                 new_fcf_pri->fcf_rec.fcf_index);
2344                 goto out;
2345         }
2346
2347         last_index = find_first_bit(phba->fcf.fcf_rr_bmask,
2348                                 LPFC_SLI4_FCF_TBL_INDX_MAX);
2349         if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
2350                 ret = 0; /* Empty rr list */
2351                 goto out;
2352         }
2353         current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority;
2354         if (new_fcf_pri->fcf_rec.priority <=  current_fcf_pri) {
2355                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2356                 if (new_fcf_pri->fcf_rec.priority <  current_fcf_pri) {
2357                         memset(phba->fcf.fcf_rr_bmask, 0,
2358                                 sizeof(*phba->fcf.fcf_rr_bmask));
2359                         /* fcfs_at_this_priority_level = 1; */
2360                         phba->fcf.eligible_fcf_cnt = 1;
2361                 } else
2362                         /* fcfs_at_this_priority_level++; */
2363                         phba->fcf.eligible_fcf_cnt++;
2364                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2365                                 new_fcf_pri->fcf_rec.fcf_index);
2366                 goto out;
2367         }
2368
2369         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
2370                                 &phba->fcf.fcf_pri_list, list) {
2371                 if (new_fcf_pri->fcf_rec.priority <=
2372                                 fcf_pri->fcf_rec.priority) {
2373                         if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list)
2374                                 list_add(&new_fcf_pri->list,
2375                                                 &phba->fcf.fcf_pri_list);
2376                         else
2377                                 list_add(&new_fcf_pri->list,
2378                                          &((struct lpfc_fcf_pri *)
2379                                         fcf_pri->list.prev)->list);
2380                         ret = 0;
2381                         goto out;
2382                 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list
2383                         || new_fcf_pri->fcf_rec.priority <
2384                                 next_fcf_pri->fcf_rec.priority) {
2385                         list_add(&new_fcf_pri->list, &fcf_pri->list);
2386                         ret = 0;
2387                         goto out;
2388                 }
2389                 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority)
2390                         continue;
2391
2392         }
2393         ret = 1;
2394 out:
2395         /* we use = instead of |= to clear the FLOGI_FAILED flag. */
2396         new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST;
2397         spin_unlock_irq(&phba->hbalock);
2398         return ret;
2399 }
2400
2401 /**
2402  * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
2403  * @phba: pointer to lpfc hba data structure.
2404  * @mboxq: pointer to mailbox object.
2405  *
2406  * This function iterates through all the fcf records available in
2407  * HBA and chooses the optimal FCF record for discovery. After finding
2408  * the FCF for discovery it registers the FCF record and kicks start
2409  * discovery.
2410  * If FCF_IN_USE flag is set in currently used FCF, the routine tries to
2411  * use an FCF record which matches fabric name and mac address of the
2412  * currently used FCF record.
2413  * If the driver supports only one FCF, it will try to use the FCF record
2414  * used by BOOT_BIOS.
2415  */
2416 void
2417 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2418 {
2419         struct fcf_record *new_fcf_record;
2420         uint32_t boot_flag, addr_mode;
2421         uint16_t fcf_index, next_fcf_index;
2422         struct lpfc_fcf_rec *fcf_rec = NULL;
2423         uint16_t vlan_id = LPFC_FCOE_NULL_VID;
2424         bool select_new_fcf;
2425         int rc;
2426
2427         /* If there is pending FCoE event restart FCF table scan */
2428         if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) {
2429                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2430                 return;
2431         }
2432
2433         /* Parse the FCF record from the non-embedded mailbox command */
2434         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2435                                                       &next_fcf_index);
2436         if (!new_fcf_record) {
2437                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2438                                 "2765 Mailbox command READ_FCF_RECORD "
2439                                 "failed to retrieve a FCF record.\n");
2440                 /* Let next new FCF event trigger fast failover */
2441                 spin_lock_irq(&phba->hbalock);
2442                 phba->hba_flag &= ~FCF_TS_INPROG;
2443                 spin_unlock_irq(&phba->hbalock);
2444                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2445                 return;
2446         }
2447
2448         /* Check the FCF record against the connection list */
2449         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2450                                       &addr_mode, &vlan_id);
2451
2452         /* Log the FCF record information if turned on */
2453         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2454                                       next_fcf_index);
2455
2456         /*
2457          * If the fcf record does not match with connect list entries
2458          * read the next entry; otherwise, this is an eligible FCF
2459          * record for roundrobin FCF failover.
2460          */
2461         if (!rc) {
2462                 lpfc_sli4_fcf_pri_list_del(phba,
2463                                         bf_get(lpfc_fcf_record_fcf_index,
2464                                                new_fcf_record));
2465                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2466                                 "2781 FCF (x%x) failed connection "
2467                                 "list check: (x%x/x%x/%x)\n",
2468                                 bf_get(lpfc_fcf_record_fcf_index,
2469                                        new_fcf_record),
2470                                 bf_get(lpfc_fcf_record_fcf_avail,
2471                                        new_fcf_record),
2472                                 bf_get(lpfc_fcf_record_fcf_valid,
2473                                        new_fcf_record),
2474                                 bf_get(lpfc_fcf_record_fcf_sol,
2475                                        new_fcf_record));
2476                 if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
2477                     lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2478                     new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
2479                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) !=
2480                             phba->fcf.current_rec.fcf_indx) {
2481                                 lpfc_printf_log(phba, KERN_ERR,
2482                                                 LOG_TRACE_EVENT,
2483                                         "2862 FCF (x%x) matches property "
2484                                         "of in-use FCF (x%x)\n",
2485                                         bf_get(lpfc_fcf_record_fcf_index,
2486                                                new_fcf_record),
2487                                         phba->fcf.current_rec.fcf_indx);
2488                                 goto read_next_fcf;
2489                         }
2490                         /*
2491                          * In case the current in-use FCF record becomes
2492                          * invalid/unavailable during FCF discovery that
2493                          * was not triggered by fast FCF failover process,
2494                          * treat it as fast FCF failover.
2495                          */
2496                         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
2497                             !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2498                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2499                                                 "2835 Invalid in-use FCF "
2500                                                 "(x%x), enter FCF failover "
2501                                                 "table scan.\n",
2502                                                 phba->fcf.current_rec.fcf_indx);
2503                                 spin_lock_irq(&phba->hbalock);
2504                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2505                                 spin_unlock_irq(&phba->hbalock);
2506                                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2507                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2508                                                 LPFC_FCOE_FCF_GET_FIRST);
2509                                 return;
2510                         }
2511                 }
2512                 goto read_next_fcf;
2513         } else {
2514                 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2515                 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index,
2516                                                         new_fcf_record);
2517                 if (rc)
2518                         goto read_next_fcf;
2519         }
2520
2521         /*
2522          * If this is not the first FCF discovery of the HBA, use last
2523          * FCF record for the discovery. The condition that a rescan
2524          * matches the in-use FCF record: fabric name, switch name, mac
2525          * address, and vlan_id.
2526          */
2527         spin_lock_irq(&phba->hbalock);
2528         if (phba->fcf.fcf_flag & FCF_IN_USE) {
2529                 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2530                         lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2531                     new_fcf_record, vlan_id)) {
2532                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) ==
2533                             phba->fcf.current_rec.fcf_indx) {
2534                                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2535                                 if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
2536                                         /* Stop FCF redisc wait timer */
2537                                         __lpfc_sli4_stop_fcf_redisc_wait_timer(
2538                                                                         phba);
2539                                 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2540                                         /* Fast failover, mark completed */
2541                                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2542                                 spin_unlock_irq(&phba->hbalock);
2543                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2544                                                 "2836 New FCF matches in-use "
2545                                                 "FCF (x%x), port_state:x%x, "
2546                                                 "fc_flag:x%x\n",
2547                                                 phba->fcf.current_rec.fcf_indx,
2548                                                 phba->pport->port_state,
2549                                                 phba->pport->fc_flag);
2550                                 goto out;
2551                         } else
2552                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2553                                         "2863 New FCF (x%x) matches "
2554                                         "property of in-use FCF (x%x)\n",
2555                                         bf_get(lpfc_fcf_record_fcf_index,
2556                                                new_fcf_record),
2557                                         phba->fcf.current_rec.fcf_indx);
2558                 }
2559                 /*
2560                  * Read next FCF record from HBA searching for the matching
2561                  * with in-use record only if not during the fast failover
2562                  * period. In case of fast failover period, it shall try to
2563                  * determine whether the FCF record just read should be the
2564                  * next candidate.
2565                  */
2566                 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2567                         spin_unlock_irq(&phba->hbalock);
2568                         goto read_next_fcf;
2569                 }
2570         }
2571         /*
2572          * Update on failover FCF record only if it's in FCF fast-failover
2573          * period; otherwise, update on current FCF record.
2574          */
2575         if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2576                 fcf_rec = &phba->fcf.failover_rec;
2577         else
2578                 fcf_rec = &phba->fcf.current_rec;
2579
2580         if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
2581                 /*
2582                  * If the driver FCF record does not have boot flag
2583                  * set and new hba fcf record has boot flag set, use
2584                  * the new hba fcf record.
2585                  */
2586                 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
2587                         /* Choose this FCF record */
2588                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2589                                         "2837 Update current FCF record "
2590                                         "(x%x) with new FCF record (x%x)\n",
2591                                         fcf_rec->fcf_indx,
2592                                         bf_get(lpfc_fcf_record_fcf_index,
2593                                         new_fcf_record));
2594                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2595                                         addr_mode, vlan_id, BOOT_ENABLE);
2596                         spin_unlock_irq(&phba->hbalock);
2597                         goto read_next_fcf;
2598                 }
2599                 /*
2600                  * If the driver FCF record has boot flag set and the
2601                  * new hba FCF record does not have boot flag, read
2602                  * the next FCF record.
2603                  */
2604                 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
2605                         spin_unlock_irq(&phba->hbalock);
2606                         goto read_next_fcf;
2607                 }
2608                 /*
2609                  * If the new hba FCF record has lower priority value
2610                  * than the driver FCF record, use the new record.
2611                  */
2612                 if (new_fcf_record->fip_priority < fcf_rec->priority) {
2613                         /* Choose the new FCF record with lower priority */
2614                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2615                                         "2838 Update current FCF record "
2616                                         "(x%x) with new FCF record (x%x)\n",
2617                                         fcf_rec->fcf_indx,
2618                                         bf_get(lpfc_fcf_record_fcf_index,
2619                                                new_fcf_record));
2620                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2621                                         addr_mode, vlan_id, 0);
2622                         /* Reset running random FCF selection count */
2623                         phba->fcf.eligible_fcf_cnt = 1;
2624                 } else if (new_fcf_record->fip_priority == fcf_rec->priority) {
2625                         /* Update running random FCF selection count */
2626                         phba->fcf.eligible_fcf_cnt++;
2627                         select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
2628                                                 phba->fcf.eligible_fcf_cnt);
2629                         if (select_new_fcf) {
2630                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2631                                         "2839 Update current FCF record "
2632                                         "(x%x) with new FCF record (x%x)\n",
2633                                         fcf_rec->fcf_indx,
2634                                         bf_get(lpfc_fcf_record_fcf_index,
2635                                                new_fcf_record));
2636                                 /* Choose the new FCF by random selection */
2637                                 __lpfc_update_fcf_record(phba, fcf_rec,
2638                                                          new_fcf_record,
2639                                                          addr_mode, vlan_id, 0);
2640                         }
2641                 }
2642                 spin_unlock_irq(&phba->hbalock);
2643                 goto read_next_fcf;
2644         }
2645         /*
2646          * This is the first suitable FCF record, choose this record for
2647          * initial best-fit FCF.
2648          */
2649         if (fcf_rec) {
2650                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2651                                 "2840 Update initial FCF candidate "
2652                                 "with FCF (x%x)\n",
2653                                 bf_get(lpfc_fcf_record_fcf_index,
2654                                        new_fcf_record));
2655                 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2656                                          addr_mode, vlan_id, (boot_flag ?
2657                                          BOOT_ENABLE : 0));
2658                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2659                 /* Setup initial running random FCF selection count */
2660                 phba->fcf.eligible_fcf_cnt = 1;
2661         }
2662         spin_unlock_irq(&phba->hbalock);
2663         goto read_next_fcf;
2664
2665 read_next_fcf:
2666         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2667         if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
2668                 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
2669                         /*
2670                          * Case of FCF fast failover scan
2671                          */
2672
2673                         /*
2674                          * It has not found any suitable FCF record, cancel
2675                          * FCF scan inprogress, and do nothing
2676                          */
2677                         if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
2678                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2679                                                "2782 No suitable FCF found: "
2680                                                "(x%x/x%x)\n",
2681                                                phba->fcoe_eventtag_at_fcf_scan,
2682                                                bf_get(lpfc_fcf_record_fcf_index,
2683                                                       new_fcf_record));
2684                                 spin_lock_irq(&phba->hbalock);
2685                                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2686                                         phba->hba_flag &= ~FCF_TS_INPROG;
2687                                         spin_unlock_irq(&phba->hbalock);
2688                                         /* Unregister in-use FCF and rescan */
2689                                         lpfc_printf_log(phba, KERN_INFO,
2690                                                         LOG_FIP,
2691                                                         "2864 On devloss tmo "
2692                                                         "unreg in-use FCF and "
2693                                                         "rescan FCF table\n");
2694                                         lpfc_unregister_fcf_rescan(phba);
2695                                         return;
2696                                 }
2697                                 /*
2698                                  * Let next new FCF event trigger fast failover
2699                                  */
2700                                 phba->hba_flag &= ~FCF_TS_INPROG;
2701                                 spin_unlock_irq(&phba->hbalock);
2702                                 return;
2703                         }
2704                         /*
2705                          * It has found a suitable FCF record that is not
2706                          * the same as in-use FCF record, unregister the
2707                          * in-use FCF record, replace the in-use FCF record
2708                          * with the new FCF record, mark FCF fast failover
2709                          * completed, and then start register the new FCF
2710                          * record.
2711                          */
2712
2713                         /* Unregister the current in-use FCF record */
2714                         lpfc_unregister_fcf(phba);
2715
2716                         /* Replace in-use record with the new record */
2717                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2718                                         "2842 Replace in-use FCF (x%x) "
2719                                         "with failover FCF (x%x)\n",
2720                                         phba->fcf.current_rec.fcf_indx,
2721                                         phba->fcf.failover_rec.fcf_indx);
2722                         memcpy(&phba->fcf.current_rec,
2723                                &phba->fcf.failover_rec,
2724                                sizeof(struct lpfc_fcf_rec));
2725                         /*
2726                          * Mark the fast FCF failover rediscovery completed
2727                          * and the start of the first round of the roundrobin
2728                          * FCF failover.
2729                          */
2730                         spin_lock_irq(&phba->hbalock);
2731                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2732                         spin_unlock_irq(&phba->hbalock);
2733                         /* Register to the new FCF record */
2734                         lpfc_register_fcf(phba);
2735                 } else {
2736                         /*
2737                          * In case of transaction period to fast FCF failover,
2738                          * do nothing when search to the end of the FCF table.
2739                          */
2740                         if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
2741                             (phba->fcf.fcf_flag & FCF_REDISC_PEND))
2742                                 return;
2743
2744                         if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2745                                 phba->fcf.fcf_flag & FCF_IN_USE) {
2746                                 /*
2747                                  * In case the current in-use FCF record no
2748                                  * longer existed during FCF discovery that
2749                                  * was not triggered by fast FCF failover
2750                                  * process, treat it as fast FCF failover.
2751                                  */
2752                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2753                                                 "2841 In-use FCF record (x%x) "
2754                                                 "not reported, entering fast "
2755                                                 "FCF failover mode scanning.\n",
2756                                                 phba->fcf.current_rec.fcf_indx);
2757                                 spin_lock_irq(&phba->hbalock);
2758                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2759                                 spin_unlock_irq(&phba->hbalock);
2760                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2761                                                 LPFC_FCOE_FCF_GET_FIRST);
2762                                 return;
2763                         }
2764                         /* Register to the new FCF record */
2765                         lpfc_register_fcf(phba);
2766                 }
2767         } else
2768                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
2769         return;
2770
2771 out:
2772         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2773         lpfc_register_fcf(phba);
2774
2775         return;
2776 }
2777
2778 /**
2779  * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler
2780  * @phba: pointer to lpfc hba data structure.
2781  * @mboxq: pointer to mailbox object.
2782  *
2783  * This is the callback function for FLOGI failure roundrobin FCF failover
2784  * read FCF record mailbox command from the eligible FCF record bmask for
2785  * performing the failover. If the FCF read back is not valid/available, it
2786  * fails through to retrying FLOGI to the currently registered FCF again.
2787  * Otherwise, if the FCF read back is valid and available, it will set the
2788  * newly read FCF record to the failover FCF record, unregister currently
2789  * registered FCF record, copy the failover FCF record to the current
2790  * FCF record, and then register the current FCF record before proceeding
2791  * to trying FLOGI on the new failover FCF.
2792  */
2793 void
2794 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2795 {
2796         struct fcf_record *new_fcf_record;
2797         uint32_t boot_flag, addr_mode;
2798         uint16_t next_fcf_index, fcf_index;
2799         uint16_t current_fcf_index;
2800         uint16_t vlan_id;
2801         int rc;
2802
2803         /* If link state is not up, stop the roundrobin failover process */
2804         if (phba->link_state < LPFC_LINK_UP) {
2805                 spin_lock_irq(&phba->hbalock);
2806                 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
2807                 phba->hba_flag &= ~FCF_RR_INPROG;
2808                 spin_unlock_irq(&phba->hbalock);
2809                 goto out;
2810         }
2811
2812         /* Parse the FCF record from the non-embedded mailbox command */
2813         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2814                                                       &next_fcf_index);
2815         if (!new_fcf_record) {
2816                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2817                                 "2766 Mailbox command READ_FCF_RECORD "
2818                                 "failed to retrieve a FCF record. "
2819                                 "hba_flg x%x fcf_flg x%x\n", phba->hba_flag,
2820                                 phba->fcf.fcf_flag);
2821                 lpfc_unregister_fcf_rescan(phba);
2822                 goto out;
2823         }
2824
2825         /* Get the needed parameters from FCF record */
2826         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2827                                       &addr_mode, &vlan_id);
2828
2829         /* Log the FCF record information if turned on */
2830         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2831                                       next_fcf_index);
2832
2833         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2834         if (!rc) {
2835                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2836                                 "2848 Remove ineligible FCF (x%x) from "
2837                                 "from roundrobin bmask\n", fcf_index);
2838                 /* Clear roundrobin bmask bit for ineligible FCF */
2839                 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index);
2840                 /* Perform next round of roundrobin FCF failover */
2841                 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
2842                 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index);
2843                 if (rc)
2844                         goto out;
2845                 goto error_out;
2846         }
2847
2848         if (fcf_index == phba->fcf.current_rec.fcf_indx) {
2849                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2850                                 "2760 Perform FLOGI roundrobin FCF failover: "
2851                                 "FCF (x%x) back to FCF (x%x)\n",
2852                                 phba->fcf.current_rec.fcf_indx, fcf_index);
2853                 /* Wait 500 ms before retrying FLOGI to current FCF */
2854                 msleep(500);
2855                 lpfc_issue_init_vfi(phba->pport);
2856                 goto out;
2857         }
2858
2859         /* Upload new FCF record to the failover FCF record */
2860         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2861                         "2834 Update current FCF (x%x) with new FCF (x%x)\n",
2862                         phba->fcf.failover_rec.fcf_indx, fcf_index);
2863         spin_lock_irq(&phba->hbalock);
2864         __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
2865                                  new_fcf_record, addr_mode, vlan_id,
2866                                  (boot_flag ? BOOT_ENABLE : 0));
2867         spin_unlock_irq(&phba->hbalock);
2868
2869         current_fcf_index = phba->fcf.current_rec.fcf_indx;
2870
2871         /* Unregister the current in-use FCF record */
2872         lpfc_unregister_fcf(phba);
2873
2874         /* Replace in-use record with the new record */
2875         memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
2876                sizeof(struct lpfc_fcf_rec));
2877
2878         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2879                         "2783 Perform FLOGI roundrobin FCF failover: FCF "
2880                         "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index);
2881
2882 error_out:
2883         lpfc_register_fcf(phba);
2884 out:
2885         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2886 }
2887
2888 /**
2889  * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
2890  * @phba: pointer to lpfc hba data structure.
2891  * @mboxq: pointer to mailbox object.
2892  *
2893  * This is the callback function of read FCF record mailbox command for
2894  * updating the eligible FCF bmask for FLOGI failure roundrobin FCF
2895  * failover when a new FCF event happened. If the FCF read back is
2896  * valid/available and it passes the connection list check, it updates
2897  * the bmask for the eligible FCF record for roundrobin failover.
2898  */
2899 void
2900 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2901 {
2902         struct fcf_record *new_fcf_record;
2903         uint32_t boot_flag, addr_mode;
2904         uint16_t fcf_index, next_fcf_index;
2905         uint16_t vlan_id;
2906         int rc;
2907
2908         /* If link state is not up, no need to proceed */
2909         if (phba->link_state < LPFC_LINK_UP)
2910                 goto out;
2911
2912         /* If FCF discovery period is over, no need to proceed */
2913         if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
2914                 goto out;
2915
2916         /* Parse the FCF record from the non-embedded mailbox command */
2917         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2918                                                       &next_fcf_index);
2919         if (!new_fcf_record) {
2920                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2921                                 "2767 Mailbox command READ_FCF_RECORD "
2922                                 "failed to retrieve a FCF record.\n");
2923                 goto out;
2924         }
2925
2926         /* Check the connection list for eligibility */
2927         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2928                                       &addr_mode, &vlan_id);
2929
2930         /* Log the FCF record information if turned on */
2931         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2932                                       next_fcf_index);
2933
2934         if (!rc)
2935                 goto out;
2936
2937         /* Update the eligible FCF record index bmask */
2938         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2939
2940         rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record);
2941
2942 out:
2943         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2944 }
2945
2946 /**
2947  * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command.
2948  * @phba: pointer to lpfc hba data structure.
2949  * @mboxq: pointer to mailbox data structure.
2950  *
2951  * This function handles completion of init vfi mailbox command.
2952  */
2953 static void
2954 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2955 {
2956         struct lpfc_vport *vport = mboxq->vport;
2957
2958         /*
2959          * VFI not supported on interface type 0, just do the flogi
2960          * Also continue if the VFI is in use - just use the same one.
2961          */
2962         if (mboxq->u.mb.mbxStatus &&
2963             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
2964                         LPFC_SLI_INTF_IF_TYPE_0) &&
2965             mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
2966                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
2967                                  "2891 Init VFI mailbox failed 0x%x\n",
2968                                  mboxq->u.mb.mbxStatus);
2969                 mempool_free(mboxq, phba->mbox_mem_pool);
2970                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2971                 return;
2972         }
2973
2974         lpfc_initial_flogi(vport);
2975         mempool_free(mboxq, phba->mbox_mem_pool);
2976         return;
2977 }
2978
2979 /**
2980  * lpfc_issue_init_vfi - Issue init_vfi mailbox command.
2981  * @vport: pointer to lpfc_vport data structure.
2982  *
2983  * This function issue a init_vfi mailbox command to initialize the VFI and
2984  * VPI for the physical port.
2985  */
2986 void
2987 lpfc_issue_init_vfi(struct lpfc_vport *vport)
2988 {
2989         LPFC_MBOXQ_t *mboxq;
2990         int rc;
2991         struct lpfc_hba *phba = vport->phba;
2992
2993         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2994         if (!mboxq) {
2995                 lpfc_printf_vlog(vport, KERN_ERR,
2996                         LOG_TRACE_EVENT, "2892 Failed to allocate "
2997                         "init_vfi mailbox\n");
2998                 return;
2999         }
3000         lpfc_init_vfi(mboxq, vport);
3001         mboxq->mbox_cmpl = lpfc_init_vfi_cmpl;
3002         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
3003         if (rc == MBX_NOT_FINISHED) {
3004                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3005                                  "2893 Failed to issue init_vfi mailbox\n");
3006                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
3007         }
3008 }
3009
3010 /**
3011  * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
3012  * @phba: pointer to lpfc hba data structure.
3013  * @mboxq: pointer to mailbox data structure.
3014  *
3015  * This function handles completion of init vpi mailbox command.
3016  */
3017 void
3018 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3019 {
3020         struct lpfc_vport *vport = mboxq->vport;
3021         struct lpfc_nodelist *ndlp;
3022         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3023
3024         if (mboxq->u.mb.mbxStatus) {
3025                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3026                                  "2609 Init VPI mailbox failed 0x%x\n",
3027                                  mboxq->u.mb.mbxStatus);
3028                 mempool_free(mboxq, phba->mbox_mem_pool);
3029                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3030                 return;
3031         }
3032         spin_lock_irq(shost->host_lock);
3033         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
3034         spin_unlock_irq(shost->host_lock);
3035
3036         /* If this port is physical port or FDISC is done, do reg_vpi */
3037         if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
3038                         ndlp = lpfc_findnode_did(vport, Fabric_DID);
3039                         if (!ndlp)
3040                                 lpfc_printf_vlog(vport, KERN_ERR,
3041                                         LOG_TRACE_EVENT,
3042                                         "2731 Cannot find fabric "
3043                                         "controller node\n");
3044                         else
3045                                 lpfc_register_new_vport(phba, vport, ndlp);
3046                         mempool_free(mboxq, phba->mbox_mem_pool);
3047                         return;
3048         }
3049
3050         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
3051                 lpfc_initial_fdisc(vport);
3052         else {
3053                 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
3054                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3055                                  "2606 No NPIV Fabric support\n");
3056         }
3057         mempool_free(mboxq, phba->mbox_mem_pool);
3058         return;
3059 }
3060
3061 /**
3062  * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
3063  * @vport: pointer to lpfc_vport data structure.
3064  *
3065  * This function issue a init_vpi mailbox command to initialize
3066  * VPI for the vport.
3067  */
3068 void
3069 lpfc_issue_init_vpi(struct lpfc_vport *vport)
3070 {
3071         LPFC_MBOXQ_t *mboxq;
3072         int rc, vpi;
3073
3074         if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) {
3075                 vpi = lpfc_alloc_vpi(vport->phba);
3076                 if (!vpi) {
3077                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3078                                          "3303 Failed to obtain vport vpi\n");
3079                         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3080                         return;
3081                 }
3082                 vport->vpi = vpi;
3083         }
3084
3085         mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
3086         if (!mboxq) {
3087                 lpfc_printf_vlog(vport, KERN_ERR,
3088                         LOG_TRACE_EVENT, "2607 Failed to allocate "
3089                         "init_vpi mailbox\n");
3090                 return;
3091         }
3092         lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
3093         mboxq->vport = vport;
3094         mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
3095         rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
3096         if (rc == MBX_NOT_FINISHED) {
3097                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3098                                  "2608 Failed to issue init_vpi mailbox\n");
3099                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
3100         }
3101 }
3102
3103 /**
3104  * lpfc_start_fdiscs - send fdiscs for each vports on this port.
3105  * @phba: pointer to lpfc hba data structure.
3106  *
3107  * This function loops through the list of vports on the @phba and issues an
3108  * FDISC if possible.
3109  */
3110 void
3111 lpfc_start_fdiscs(struct lpfc_hba *phba)
3112 {
3113         struct lpfc_vport **vports;
3114         int i;
3115
3116         vports = lpfc_create_vport_work_array(phba);
3117         if (vports != NULL) {
3118                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3119                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
3120                                 continue;
3121                         /* There are no vpi for this vport */
3122                         if (vports[i]->vpi > phba->max_vpi) {
3123                                 lpfc_vport_set_state(vports[i],
3124                                                      FC_VPORT_FAILED);
3125                                 continue;
3126                         }
3127                         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3128                                 lpfc_vport_set_state(vports[i],
3129                                                      FC_VPORT_LINKDOWN);
3130                                 continue;
3131                         }
3132                         if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
3133                                 lpfc_issue_init_vpi(vports[i]);
3134                                 continue;
3135                         }
3136                         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
3137                                 lpfc_initial_fdisc(vports[i]);
3138                         else {
3139                                 lpfc_vport_set_state(vports[i],
3140                                                      FC_VPORT_NO_FABRIC_SUPP);
3141                                 lpfc_printf_vlog(vports[i], KERN_ERR,
3142                                                  LOG_TRACE_EVENT,
3143                                                  "0259 No NPIV "
3144                                                  "Fabric support\n");
3145                         }
3146                 }
3147         }
3148         lpfc_destroy_vport_work_array(phba, vports);
3149 }
3150
3151 void
3152 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3153 {
3154         struct lpfc_dmabuf *dmabuf = mboxq->ctx_buf;
3155         struct lpfc_vport *vport = mboxq->vport;
3156         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3157
3158         /*
3159          * VFI not supported for interface type 0, so ignore any mailbox
3160          * error (except VFI in use) and continue with the discovery.
3161          */
3162         if (mboxq->u.mb.mbxStatus &&
3163             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
3164                         LPFC_SLI_INTF_IF_TYPE_0) &&
3165             mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
3166                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3167                                  "2018 REG_VFI mbxStatus error x%x "
3168                                  "HBA state x%x\n",
3169                                  mboxq->u.mb.mbxStatus, vport->port_state);
3170                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3171                         /* FLOGI failed, use loop map to make discovery list */
3172                         lpfc_disc_list_loopmap(vport);
3173                         /* Start discovery */
3174                         lpfc_disc_start(vport);
3175                         goto out_free_mem;
3176                 }
3177                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3178                 goto out_free_mem;
3179         }
3180
3181         /* If the VFI is already registered, there is nothing else to do
3182          * Unless this was a VFI update and we are in PT2PT mode, then
3183          * we should drop through to set the port state to ready.
3184          */
3185         if (vport->fc_flag & FC_VFI_REGISTERED)
3186                 if (!(phba->sli_rev == LPFC_SLI_REV4 &&
3187                       vport->fc_flag & FC_PT2PT))
3188                         goto out_free_mem;
3189
3190         /* The VPI is implicitly registered when the VFI is registered */
3191         spin_lock_irq(shost->host_lock);
3192         vport->vpi_state |= LPFC_VPI_REGISTERED;
3193         vport->fc_flag |= FC_VFI_REGISTERED;
3194         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3195         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
3196         spin_unlock_irq(shost->host_lock);
3197
3198         /* In case SLI4 FC loopback test, we are ready */
3199         if ((phba->sli_rev == LPFC_SLI_REV4) &&
3200             (phba->link_flag & LS_LOOPBACK_MODE)) {
3201                 phba->link_state = LPFC_HBA_READY;
3202                 goto out_free_mem;
3203         }
3204
3205         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3206                          "3313 cmpl reg vfi  port_state:%x fc_flag:%x myDid:%x "
3207                          "alpacnt:%d LinkState:%x topology:%x\n",
3208                          vport->port_state, vport->fc_flag, vport->fc_myDID,
3209                          vport->phba->alpa_map[0],
3210                          phba->link_state, phba->fc_topology);
3211
3212         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3213                 /*
3214                  * For private loop or for NPort pt2pt,
3215                  * just start discovery and we are done.
3216                  */
3217                 if ((vport->fc_flag & FC_PT2PT) ||
3218                     ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) &&
3219                     !(vport->fc_flag & FC_PUBLIC_LOOP))) {
3220
3221                         /* Use loop map to make discovery list */
3222                         lpfc_disc_list_loopmap(vport);
3223                         /* Start discovery */
3224                         if (vport->fc_flag & FC_PT2PT)
3225                                 vport->port_state = LPFC_VPORT_READY;
3226                         else
3227                                 lpfc_disc_start(vport);
3228                 } else {
3229                         lpfc_start_fdiscs(phba);
3230                         lpfc_do_scr_ns_plogi(phba, vport);
3231                 }
3232         }
3233
3234 out_free_mem:
3235         mempool_free(mboxq, phba->mbox_mem_pool);
3236         if (dmabuf) {
3237                 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
3238                 kfree(dmabuf);
3239         }
3240         return;
3241 }
3242
3243 static void
3244 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3245 {
3246         MAILBOX_t *mb = &pmb->u.mb;
3247         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3248         struct lpfc_vport  *vport = pmb->vport;
3249         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3250         struct serv_parm *sp = &vport->fc_sparam;
3251         uint32_t ed_tov;
3252
3253         /* Check for error */
3254         if (mb->mbxStatus) {
3255                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
3256                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3257                                  "0319 READ_SPARAM mbxStatus error x%x "
3258                                  "hba state x%x>\n",
3259                                  mb->mbxStatus, vport->port_state);
3260                 lpfc_linkdown(phba);
3261                 goto out;
3262         }
3263
3264         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
3265                sizeof (struct serv_parm));
3266
3267         ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
3268         if (sp->cmn.edtovResolution)    /* E_D_TOV ticks are in nanoseconds */
3269                 ed_tov = (ed_tov + 999999) / 1000000;
3270
3271         phba->fc_edtov = ed_tov;
3272         phba->fc_ratov = (2 * ed_tov) / 1000;
3273         if (phba->fc_ratov < FF_DEF_RATOV) {
3274                 /* RA_TOV should be atleast 10sec for initial flogi */
3275                 phba->fc_ratov = FF_DEF_RATOV;
3276         }
3277
3278         lpfc_update_vport_wwn(vport);
3279         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
3280         if (vport->port_type == LPFC_PHYSICAL_PORT) {
3281                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
3282                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
3283         }
3284
3285         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3286         kfree(mp);
3287         mempool_free(pmb, phba->mbox_mem_pool);
3288
3289         /* Check if sending the FLOGI is being deferred to after we get
3290          * up to date CSPs from MBX_READ_SPARAM.
3291          */
3292         if (phba->hba_flag & HBA_DEFER_FLOGI) {
3293                 lpfc_initial_flogi(vport);
3294                 phba->hba_flag &= ~HBA_DEFER_FLOGI;
3295         }
3296         return;
3297
3298 out:
3299         pmb->ctx_buf = NULL;
3300         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3301         kfree(mp);
3302         lpfc_issue_clear_la(phba, vport);
3303         mempool_free(pmb, phba->mbox_mem_pool);
3304         return;
3305 }
3306
3307 static void
3308 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
3309 {
3310         struct lpfc_vport *vport = phba->pport;
3311         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
3312         struct Scsi_Host *shost;
3313         int i;
3314         struct lpfc_dmabuf *mp;
3315         int rc;
3316         struct fcf_record *fcf_record;
3317         uint32_t fc_flags = 0;
3318         unsigned long iflags;
3319
3320         spin_lock_irqsave(&phba->hbalock, iflags);
3321         phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la);
3322
3323         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3324                 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) {
3325                 case LPFC_LINK_SPEED_1GHZ:
3326                 case LPFC_LINK_SPEED_2GHZ:
3327                 case LPFC_LINK_SPEED_4GHZ:
3328                 case LPFC_LINK_SPEED_8GHZ:
3329                 case LPFC_LINK_SPEED_10GHZ:
3330                 case LPFC_LINK_SPEED_16GHZ:
3331                 case LPFC_LINK_SPEED_32GHZ:
3332                 case LPFC_LINK_SPEED_64GHZ:
3333                 case LPFC_LINK_SPEED_128GHZ:
3334                 case LPFC_LINK_SPEED_256GHZ:
3335                         break;
3336                 default:
3337                         phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN;
3338                         break;
3339                 }
3340         }
3341
3342         if (phba->fc_topology &&
3343             phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) {
3344                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
3345                                 "3314 Toplogy changed was 0x%x is 0x%x\n",
3346                                 phba->fc_topology,
3347                                 bf_get(lpfc_mbx_read_top_topology, la));
3348                 phba->fc_topology_changed = 1;
3349         }
3350
3351         phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la);
3352         phba->link_flag &= ~(LS_NPIV_FAB_SUPPORTED | LS_CT_VEN_RPA);
3353
3354         shost = lpfc_shost_from_vport(vport);
3355         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3356                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
3357
3358                 /* if npiv is enabled and this adapter supports npiv log
3359                  * a message that npiv is not supported in this topology
3360                  */
3361                 if (phba->cfg_enable_npiv && phba->max_vpi)
3362                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3363                                 "1309 Link Up Event npiv not supported in loop "
3364                                 "topology\n");
3365                                 /* Get Loop Map information */
3366                 if (bf_get(lpfc_mbx_read_top_il, la))
3367                         fc_flags |= FC_LBIT;
3368
3369                 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la);
3370                 i = la->lilpBde64.tus.f.bdeSize;
3371
3372                 if (i == 0) {
3373                         phba->alpa_map[0] = 0;
3374                 } else {
3375                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
3376                                 int numalpa, j, k;
3377                                 union {
3378                                         uint8_t pamap[16];
3379                                         struct {
3380                                                 uint32_t wd1;
3381                                                 uint32_t wd2;
3382                                                 uint32_t wd3;
3383                                                 uint32_t wd4;
3384                                         } pa;
3385                                 } un;
3386                                 numalpa = phba->alpa_map[0];
3387                                 j = 0;
3388                                 while (j < numalpa) {
3389                                         memset(un.pamap, 0, 16);
3390                                         for (k = 1; j < numalpa; k++) {
3391                                                 un.pamap[k - 1] =
3392                                                         phba->alpa_map[j + 1];
3393                                                 j++;
3394                                                 if (k == 16)
3395                                                         break;
3396                                         }
3397                                         /* Link Up Event ALPA map */
3398                                         lpfc_printf_log(phba,
3399                                                         KERN_WARNING,
3400                                                         LOG_LINK_EVENT,
3401                                                         "1304 Link Up Event "
3402                                                         "ALPA map Data: x%x "
3403                                                         "x%x x%x x%x\n",
3404                                                         un.pa.wd1, un.pa.wd2,
3405                                                         un.pa.wd3, un.pa.wd4);
3406                                 }
3407                         }
3408                 }
3409         } else {
3410                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
3411                         if (phba->max_vpi && phba->cfg_enable_npiv &&
3412                            (phba->sli_rev >= LPFC_SLI_REV3))
3413                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
3414                 }
3415                 vport->fc_myDID = phba->fc_pref_DID;
3416                 fc_flags |= FC_LBIT;
3417         }
3418         spin_unlock_irqrestore(&phba->hbalock, iflags);
3419
3420         if (fc_flags) {
3421                 spin_lock_irqsave(shost->host_lock, iflags);
3422                 vport->fc_flag |= fc_flags;
3423                 spin_unlock_irqrestore(shost->host_lock, iflags);
3424         }
3425
3426         lpfc_linkup(phba);
3427         sparam_mbox = NULL;
3428
3429         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3430         if (!sparam_mbox)
3431                 goto out;
3432
3433         rc = lpfc_read_sparam(phba, sparam_mbox, 0);
3434         if (rc) {
3435                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3436                 goto out;
3437         }
3438         sparam_mbox->vport = vport;
3439         sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
3440         rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
3441         if (rc == MBX_NOT_FINISHED) {
3442                 mp = (struct lpfc_dmabuf *)sparam_mbox->ctx_buf;
3443                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3444                 kfree(mp);
3445                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3446                 goto out;
3447         }
3448
3449         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3450                 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3451                 if (!cfglink_mbox)
3452                         goto out;
3453                 vport->port_state = LPFC_LOCAL_CFG_LINK;
3454                 lpfc_config_link(phba, cfglink_mbox);
3455                 cfglink_mbox->vport = vport;
3456                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
3457                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
3458                 if (rc == MBX_NOT_FINISHED) {
3459                         mempool_free(cfglink_mbox, phba->mbox_mem_pool);
3460                         goto out;
3461                 }
3462         } else {
3463                 vport->port_state = LPFC_VPORT_UNKNOWN;
3464                 /*
3465                  * Add the driver's default FCF record at FCF index 0 now. This
3466                  * is phase 1 implementation that support FCF index 0 and driver
3467                  * defaults.
3468                  */
3469                 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
3470                         fcf_record = kzalloc(sizeof(struct fcf_record),
3471                                         GFP_KERNEL);
3472                         if (unlikely(!fcf_record)) {
3473                                 lpfc_printf_log(phba, KERN_ERR,
3474                                         LOG_TRACE_EVENT,
3475                                         "2554 Could not allocate memory for "
3476                                         "fcf record\n");
3477                                 rc = -ENODEV;
3478                                 goto out;
3479                         }
3480
3481                         lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
3482                                                 LPFC_FCOE_FCF_DEF_INDEX);
3483                         rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
3484                         if (unlikely(rc)) {
3485                                 lpfc_printf_log(phba, KERN_ERR,
3486                                         LOG_TRACE_EVENT,
3487                                         "2013 Could not manually add FCF "
3488                                         "record 0, status %d\n", rc);
3489                                 rc = -ENODEV;
3490                                 kfree(fcf_record);
3491                                 goto out;
3492                         }
3493                         kfree(fcf_record);
3494                 }
3495                 /*
3496                  * The driver is expected to do FIP/FCF. Call the port
3497                  * and get the FCF Table.
3498                  */
3499                 spin_lock_irqsave(&phba->hbalock, iflags);
3500                 if (phba->hba_flag & FCF_TS_INPROG) {
3501                         spin_unlock_irqrestore(&phba->hbalock, iflags);
3502                         return;
3503                 }
3504                 /* This is the initial FCF discovery scan */
3505                 phba->fcf.fcf_flag |= FCF_INIT_DISC;
3506                 spin_unlock_irqrestore(&phba->hbalock, iflags);
3507                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3508                                 "2778 Start FCF table scan at linkup\n");
3509                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
3510                                                      LPFC_FCOE_FCF_GET_FIRST);
3511                 if (rc) {
3512                         spin_lock_irqsave(&phba->hbalock, iflags);
3513                         phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
3514                         spin_unlock_irqrestore(&phba->hbalock, iflags);
3515                         goto out;
3516                 }
3517                 /* Reset FCF roundrobin bmask for new discovery */
3518                 lpfc_sli4_clear_fcf_rr_bmask(phba);
3519         }
3520
3521         /* Prepare for LINK up registrations */
3522         memset(phba->os_host_name, 0, sizeof(phba->os_host_name));
3523         scnprintf(phba->os_host_name, sizeof(phba->os_host_name), "%s",
3524                   init_utsname()->nodename);
3525         return;
3526 out:
3527         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3528         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3529                          "0263 Discovery Mailbox error: state: 0x%x : x%px x%px\n",
3530                          vport->port_state, sparam_mbox, cfglink_mbox);
3531         lpfc_issue_clear_la(phba, vport);
3532         return;
3533 }
3534
3535 static void
3536 lpfc_enable_la(struct lpfc_hba *phba)
3537 {
3538         uint32_t control;
3539         struct lpfc_sli *psli = &phba->sli;
3540         spin_lock_irq(&phba->hbalock);
3541         psli->sli_flag |= LPFC_PROCESS_LA;
3542         if (phba->sli_rev <= LPFC_SLI_REV3) {
3543                 control = readl(phba->HCregaddr);
3544                 control |= HC_LAINT_ENA;
3545                 writel(control, phba->HCregaddr);
3546                 readl(phba->HCregaddr); /* flush */
3547         }
3548         spin_unlock_irq(&phba->hbalock);
3549 }
3550
3551 static void
3552 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
3553 {
3554         lpfc_linkdown(phba);
3555         lpfc_enable_la(phba);
3556         lpfc_unregister_unused_fcf(phba);
3557         /* turn on Link Attention interrupts - no CLEAR_LA needed */
3558 }
3559
3560
3561 /*
3562  * This routine handles processing a READ_TOPOLOGY mailbox
3563  * command upon completion. It is setup in the LPFC_MBOXQ
3564  * as the completion routine when the command is
3565  * handed off to the SLI layer. SLI4 only.
3566  */
3567 void
3568 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3569 {
3570         struct lpfc_vport *vport = pmb->vport;
3571         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3572         struct lpfc_mbx_read_top *la;
3573         struct lpfc_sli_ring *pring;
3574         MAILBOX_t *mb = &pmb->u.mb;
3575         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
3576         uint8_t attn_type;
3577         unsigned long iflags;
3578
3579         /* Unblock ELS traffic */
3580         pring = lpfc_phba_elsring(phba);
3581         if (pring)
3582                 pring->flag &= ~LPFC_STOP_IOCB_EVENT;
3583
3584         /* Check for error */
3585         if (mb->mbxStatus) {
3586                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3587                                 "1307 READ_LA mbox error x%x state x%x\n",
3588                                 mb->mbxStatus, vport->port_state);
3589                 lpfc_mbx_issue_link_down(phba);
3590                 phba->link_state = LPFC_HBA_ERROR;
3591                 goto lpfc_mbx_cmpl_read_topology_free_mbuf;
3592         }
3593
3594         la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
3595         attn_type = bf_get(lpfc_mbx_read_top_att_type, la);
3596
3597         memcpy(&phba->alpa_map[0], mp->virt, 128);
3598
3599         spin_lock_irqsave(shost->host_lock, iflags);
3600         if (bf_get(lpfc_mbx_read_top_pb, la))
3601                 vport->fc_flag |= FC_BYPASSED_MODE;
3602         else
3603                 vport->fc_flag &= ~FC_BYPASSED_MODE;
3604         spin_unlock_irqrestore(shost->host_lock, iflags);
3605
3606         if (phba->fc_eventTag <= la->eventTag) {
3607                 phba->fc_stat.LinkMultiEvent++;
3608                 if (attn_type == LPFC_ATT_LINK_UP)
3609                         if (phba->fc_eventTag != 0)
3610                                 lpfc_linkdown(phba);
3611         }
3612
3613         phba->fc_eventTag = la->eventTag;
3614         if (phba->sli_rev < LPFC_SLI_REV4) {
3615                 spin_lock_irqsave(&phba->hbalock, iflags);
3616                 if (bf_get(lpfc_mbx_read_top_mm, la))
3617                         phba->sli.sli_flag |= LPFC_MENLO_MAINT;
3618                 else
3619                         phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
3620                 spin_unlock_irqrestore(&phba->hbalock, iflags);
3621         }
3622
3623         phba->link_events++;
3624         if ((attn_type == LPFC_ATT_LINK_UP) &&
3625             !(phba->sli.sli_flag & LPFC_MENLO_MAINT)) {
3626                 phba->fc_stat.LinkUp++;
3627                 if (phba->link_flag & LS_LOOPBACK_MODE) {
3628                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3629                                         "1306 Link Up Event in loop back mode "
3630                                         "x%x received Data: x%x x%x x%x x%x\n",
3631                                         la->eventTag, phba->fc_eventTag,
3632                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3633                                                la),
3634                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3635                                         phba->alpa_map[0]);
3636                 } else {
3637                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3638                                         "1303 Link Up Event x%x received "
3639                                         "Data: x%x x%x x%x x%x x%x x%x %d\n",
3640                                         la->eventTag, phba->fc_eventTag,
3641                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3642                                                la),
3643                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3644                                         phba->alpa_map[0],
3645                                         bf_get(lpfc_mbx_read_top_mm, la),
3646                                         bf_get(lpfc_mbx_read_top_fa, la),
3647                                         phba->wait_4_mlo_maint_flg);
3648                 }
3649                 lpfc_mbx_process_link_up(phba, la);
3650
3651                 if (phba->cmf_active_mode != LPFC_CFG_OFF)
3652                         lpfc_cmf_signal_init(phba);
3653
3654         } else if (attn_type == LPFC_ATT_LINK_DOWN ||
3655                    attn_type == LPFC_ATT_UNEXP_WWPN) {
3656                 phba->fc_stat.LinkDown++;
3657                 if (phba->link_flag & LS_LOOPBACK_MODE)
3658                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3659                                 "1308 Link Down Event in loop back mode "
3660                                 "x%x received "
3661                                 "Data: x%x x%x x%x\n",
3662                                 la->eventTag, phba->fc_eventTag,
3663                                 phba->pport->port_state, vport->fc_flag);
3664                 else if (attn_type == LPFC_ATT_UNEXP_WWPN)
3665                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3666                                 "1313 Link Down Unexpected FA WWPN Event x%x "
3667                                 "received Data: x%x x%x x%x x%x x%x\n",
3668                                 la->eventTag, phba->fc_eventTag,
3669                                 phba->pport->port_state, vport->fc_flag,
3670                                 bf_get(lpfc_mbx_read_top_mm, la),
3671                                 bf_get(lpfc_mbx_read_top_fa, la));
3672                 else
3673                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3674                                 "1305 Link Down Event x%x received "
3675                                 "Data: x%x x%x x%x x%x x%x\n",
3676                                 la->eventTag, phba->fc_eventTag,
3677                                 phba->pport->port_state, vport->fc_flag,
3678                                 bf_get(lpfc_mbx_read_top_mm, la),
3679                                 bf_get(lpfc_mbx_read_top_fa, la));
3680                 lpfc_mbx_issue_link_down(phba);
3681         }
3682         if (phba->sli.sli_flag & LPFC_MENLO_MAINT &&
3683             attn_type == LPFC_ATT_LINK_UP) {
3684                 if (phba->link_state != LPFC_LINK_DOWN) {
3685                         phba->fc_stat.LinkDown++;
3686                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3687                                 "1312 Link Down Event x%x received "
3688                                 "Data: x%x x%x x%x\n",
3689                                 la->eventTag, phba->fc_eventTag,
3690                                 phba->pport->port_state, vport->fc_flag);
3691                         lpfc_mbx_issue_link_down(phba);
3692                 } else
3693                         lpfc_enable_la(phba);
3694
3695                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3696                                 "1310 Menlo Maint Mode Link up Event x%x rcvd "
3697                                 "Data: x%x x%x x%x\n",
3698                                 la->eventTag, phba->fc_eventTag,
3699                                 phba->pport->port_state, vport->fc_flag);
3700                 /*
3701                  * The cmnd that triggered this will be waiting for this
3702                  * signal.
3703                  */
3704                 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
3705                 if (phba->wait_4_mlo_maint_flg) {
3706                         phba->wait_4_mlo_maint_flg = 0;
3707                         wake_up_interruptible(&phba->wait_4_mlo_m_q);
3708                 }
3709         }
3710
3711         if ((phba->sli_rev < LPFC_SLI_REV4) &&
3712             bf_get(lpfc_mbx_read_top_fa, la)) {
3713                 if (phba->sli.sli_flag & LPFC_MENLO_MAINT)
3714                         lpfc_issue_clear_la(phba, vport);
3715                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3716                                 "1311 fa %d\n",
3717                                 bf_get(lpfc_mbx_read_top_fa, la));
3718         }
3719
3720 lpfc_mbx_cmpl_read_topology_free_mbuf:
3721         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3722         kfree(mp);
3723         mempool_free(pmb, phba->mbox_mem_pool);
3724         return;
3725 }
3726
3727 /*
3728  * This routine handles processing a REG_LOGIN mailbox
3729  * command upon completion. It is setup in the LPFC_MBOXQ
3730  * as the completion routine when the command is
3731  * handed off to the SLI layer.
3732  */
3733 void
3734 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3735 {
3736         struct lpfc_vport  *vport = pmb->vport;
3737         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
3738         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
3739
3740         pmb->ctx_buf = NULL;
3741         pmb->ctx_ndlp = NULL;
3742
3743         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI | LOG_NODE | LOG_DISCOVERY,
3744                          "0002 rpi:%x DID:%x flg:%x %d x%px\n",
3745                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
3746                          kref_read(&ndlp->kref),
3747                          ndlp);
3748         if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
3749                 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
3750
3751         if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL ||
3752             ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
3753                 /* We rcvd a rscn after issuing this
3754                  * mbox reg login, we may have cycled
3755                  * back through the state and be
3756                  * back at reg login state so this
3757                  * mbox needs to be ignored becase
3758                  * there is another reg login in
3759                  * process.
3760                  */
3761                 spin_lock_irq(&ndlp->lock);
3762                 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
3763                 spin_unlock_irq(&ndlp->lock);
3764
3765                 /*
3766                  * We cannot leave the RPI registered because
3767                  * if we go thru discovery again for this ndlp
3768                  * a subsequent REG_RPI will fail.
3769                  */
3770                 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3771                 lpfc_unreg_rpi(vport, ndlp);
3772         }
3773
3774         /* Call state machine */
3775         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
3776
3777         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3778         kfree(mp);
3779         mempool_free(pmb, phba->mbox_mem_pool);
3780         /* decrement the node reference count held for this callback
3781          * function.
3782          */
3783         lpfc_nlp_put(ndlp);
3784
3785         return;
3786 }
3787
3788 static void
3789 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3790 {
3791         MAILBOX_t *mb = &pmb->u.mb;
3792         struct lpfc_vport *vport = pmb->vport;
3793         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3794
3795         switch (mb->mbxStatus) {
3796         case 0x0011:
3797         case 0x0020:
3798                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3799                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
3800                                  mb->mbxStatus);
3801                 break;
3802         /* If VPI is busy, reset the HBA */
3803         case 0x9700:
3804                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3805                         "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n",
3806                         vport->vpi, mb->mbxStatus);
3807                 if (!(phba->pport->load_flag & FC_UNLOADING))
3808                         lpfc_workq_post_event(phba, NULL, NULL,
3809                                 LPFC_EVT_RESET_HBA);
3810         }
3811         spin_lock_irq(shost->host_lock);
3812         vport->vpi_state &= ~LPFC_VPI_REGISTERED;
3813         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3814         spin_unlock_irq(shost->host_lock);
3815         vport->unreg_vpi_cmpl = VPORT_OK;
3816         mempool_free(pmb, phba->mbox_mem_pool);
3817         lpfc_cleanup_vports_rrqs(vport, NULL);
3818         /*
3819          * This shost reference might have been taken at the beginning of
3820          * lpfc_vport_delete()
3821          */
3822         if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
3823                 scsi_host_put(shost);
3824 }
3825
3826 int
3827 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
3828 {
3829         struct lpfc_hba  *phba = vport->phba;
3830         LPFC_MBOXQ_t *mbox;
3831         int rc;
3832
3833         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3834         if (!mbox)
3835                 return 1;
3836
3837         lpfc_unreg_vpi(phba, vport->vpi, mbox);
3838         mbox->vport = vport;
3839         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
3840         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3841         if (rc == MBX_NOT_FINISHED) {
3842                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3843                                  "1800 Could not issue unreg_vpi\n");
3844                 mempool_free(mbox, phba->mbox_mem_pool);
3845                 vport->unreg_vpi_cmpl = VPORT_ERROR;
3846                 return rc;
3847         }
3848         return 0;
3849 }
3850
3851 static void
3852 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3853 {
3854         struct lpfc_vport *vport = pmb->vport;
3855         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3856         MAILBOX_t *mb = &pmb->u.mb;
3857
3858         switch (mb->mbxStatus) {
3859         case 0x0011:
3860         case 0x9601:
3861         case 0x9602:
3862                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3863                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
3864                                  mb->mbxStatus);
3865                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3866                 spin_lock_irq(shost->host_lock);
3867                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
3868                 spin_unlock_irq(shost->host_lock);
3869                 vport->fc_myDID = 0;
3870
3871                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
3872                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
3873                         if (phba->nvmet_support)
3874                                 lpfc_nvmet_update_targetport(phba);
3875                         else
3876                                 lpfc_nvme_update_localport(vport);
3877                 }
3878                 goto out;
3879         }
3880
3881         spin_lock_irq(shost->host_lock);
3882         vport->vpi_state |= LPFC_VPI_REGISTERED;
3883         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3884         spin_unlock_irq(shost->host_lock);
3885         vport->num_disc_nodes = 0;
3886         /* go thru NPR list and issue ELS PLOGIs */
3887         if (vport->fc_npr_cnt)
3888                 lpfc_els_disc_plogi(vport);
3889
3890         if (!vport->num_disc_nodes) {
3891                 spin_lock_irq(shost->host_lock);
3892                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
3893                 spin_unlock_irq(shost->host_lock);
3894                 lpfc_can_disctmo(vport);
3895         }
3896         vport->port_state = LPFC_VPORT_READY;
3897
3898 out:
3899         mempool_free(pmb, phba->mbox_mem_pool);
3900         return;
3901 }
3902
3903 /**
3904  * lpfc_create_static_vport - Read HBA config region to create static vports.
3905  * @phba: pointer to lpfc hba data structure.
3906  *
3907  * This routine issue a DUMP mailbox command for config region 22 to get
3908  * the list of static vports to be created. The function create vports
3909  * based on the information returned from the HBA.
3910  **/
3911 void
3912 lpfc_create_static_vport(struct lpfc_hba *phba)
3913 {
3914         LPFC_MBOXQ_t *pmb = NULL;
3915         MAILBOX_t *mb;
3916         struct static_vport_info *vport_info;
3917         int mbx_wait_rc = 0, i;
3918         struct fc_vport_identifiers vport_id;
3919         struct fc_vport *new_fc_vport;
3920         struct Scsi_Host *shost;
3921         struct lpfc_vport *vport;
3922         uint16_t offset = 0;
3923         uint8_t *vport_buff;
3924         struct lpfc_dmabuf *mp;
3925         uint32_t byte_count = 0;
3926
3927         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3928         if (!pmb) {
3929                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3930                                 "0542 lpfc_create_static_vport failed to"
3931                                 " allocate mailbox memory\n");
3932                 return;
3933         }
3934         memset(pmb, 0, sizeof(LPFC_MBOXQ_t));
3935         mb = &pmb->u.mb;
3936
3937         vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
3938         if (!vport_info) {
3939                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3940                                 "0543 lpfc_create_static_vport failed to"
3941                                 " allocate vport_info\n");
3942                 mempool_free(pmb, phba->mbox_mem_pool);
3943                 return;
3944         }
3945
3946         vport_buff = (uint8_t *) vport_info;
3947         do {
3948                 /* free dma buffer from previous round */
3949                 if (pmb->ctx_buf) {
3950                         mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3951                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3952                         kfree(mp);
3953                 }
3954                 if (lpfc_dump_static_vport(phba, pmb, offset))
3955                         goto out;
3956
3957                 pmb->vport = phba->pport;
3958                 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb,
3959                                                         LPFC_MBOX_TMO);
3960
3961                 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) {
3962                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3963                                 "0544 lpfc_create_static_vport failed to"
3964                                 " issue dump mailbox command ret 0x%x "
3965                                 "status 0x%x\n",
3966                                 mbx_wait_rc, mb->mbxStatus);
3967                         goto out;
3968                 }
3969
3970                 if (phba->sli_rev == LPFC_SLI_REV4) {
3971                         byte_count = pmb->u.mqe.un.mb_words[5];
3972                         mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3973                         if (byte_count > sizeof(struct static_vport_info) -
3974                                         offset)
3975                                 byte_count = sizeof(struct static_vport_info)
3976                                         - offset;
3977                         memcpy(vport_buff + offset, mp->virt, byte_count);
3978                         offset += byte_count;
3979                 } else {
3980                         if (mb->un.varDmp.word_cnt >
3981                                 sizeof(struct static_vport_info) - offset)
3982                                 mb->un.varDmp.word_cnt =
3983                                         sizeof(struct static_vport_info)
3984                                                 - offset;
3985                         byte_count = mb->un.varDmp.word_cnt;
3986                         lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
3987                                 vport_buff + offset,
3988                                 byte_count);
3989
3990                         offset += byte_count;
3991                 }
3992
3993         } while (byte_count &&
3994                 offset < sizeof(struct static_vport_info));
3995
3996
3997         if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
3998                 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
3999                         != VPORT_INFO_REV)) {
4000                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4001                                 "0545 lpfc_create_static_vport bad"
4002                                 " information header 0x%x 0x%x\n",
4003                                 le32_to_cpu(vport_info->signature),
4004                                 le32_to_cpu(vport_info->rev) &
4005                                 VPORT_INFO_REV_MASK);
4006
4007                 goto out;
4008         }
4009
4010         shost = lpfc_shost_from_vport(phba->pport);
4011
4012         for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
4013                 memset(&vport_id, 0, sizeof(vport_id));
4014                 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
4015                 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
4016                 if (!vport_id.port_name || !vport_id.node_name)
4017                         continue;
4018
4019                 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
4020                 vport_id.vport_type = FC_PORTTYPE_NPIV;
4021                 vport_id.disable = false;
4022                 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
4023
4024                 if (!new_fc_vport) {
4025                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4026                                 "0546 lpfc_create_static_vport failed to"
4027                                 " create vport\n");
4028                         continue;
4029                 }
4030
4031                 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
4032                 vport->vport_flag |= STATIC_VPORT;
4033         }
4034
4035 out:
4036         kfree(vport_info);
4037         if (mbx_wait_rc != MBX_TIMEOUT) {
4038                 if (pmb->ctx_buf) {
4039                         mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
4040                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
4041                         kfree(mp);
4042                 }
4043                 mempool_free(pmb, phba->mbox_mem_pool);
4044         }
4045
4046         return;
4047 }
4048
4049 /*
4050  * This routine handles processing a Fabric REG_LOGIN mailbox
4051  * command upon completion. It is setup in the LPFC_MBOXQ
4052  * as the completion routine when the command is
4053  * handed off to the SLI layer.
4054  */
4055 void
4056 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4057 {
4058         struct lpfc_vport *vport = pmb->vport;
4059         MAILBOX_t *mb = &pmb->u.mb;
4060         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
4061         struct lpfc_nodelist *ndlp;
4062         struct Scsi_Host *shost;
4063
4064         ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4065         pmb->ctx_ndlp = NULL;
4066         pmb->ctx_buf = NULL;
4067
4068         if (mb->mbxStatus) {
4069                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4070                                  "0258 Register Fabric login error: 0x%x\n",
4071                                  mb->mbxStatus);
4072                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
4073                 kfree(mp);
4074                 mempool_free(pmb, phba->mbox_mem_pool);
4075
4076                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4077                         /* FLOGI failed, use loop map to make discovery list */
4078                         lpfc_disc_list_loopmap(vport);
4079
4080                         /* Start discovery */
4081                         lpfc_disc_start(vport);
4082                         /* Decrement the reference count to ndlp after the
4083                          * reference to the ndlp are done.
4084                          */
4085                         lpfc_nlp_put(ndlp);
4086                         return;
4087                 }
4088
4089                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
4090                 /* Decrement the reference count to ndlp after the reference
4091                  * to the ndlp are done.
4092                  */
4093                 lpfc_nlp_put(ndlp);
4094                 return;
4095         }
4096
4097         if (phba->sli_rev < LPFC_SLI_REV4)
4098                 ndlp->nlp_rpi = mb->un.varWords[0];
4099         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4100         ndlp->nlp_type |= NLP_FABRIC;
4101         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4102
4103         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
4104                 /* when physical port receive logo donot start
4105                  * vport discovery */
4106                 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
4107                         lpfc_start_fdiscs(phba);
4108                 else {
4109                         shost = lpfc_shost_from_vport(vport);
4110                         spin_lock_irq(shost->host_lock);
4111                         vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ;
4112                         spin_unlock_irq(shost->host_lock);
4113                 }
4114                 lpfc_do_scr_ns_plogi(phba, vport);
4115         }
4116
4117         lpfc_mbuf_free(phba, mp->virt, mp->phys);
4118         kfree(mp);
4119         mempool_free(pmb, phba->mbox_mem_pool);
4120
4121         /* Drop the reference count from the mbox at the end after
4122          * all the current reference to the ndlp have been done.
4123          */
4124         lpfc_nlp_put(ndlp);
4125         return;
4126 }
4127
4128  /*
4129   * This routine will issue a GID_FT for each FC4 Type supported
4130   * by the driver. ALL GID_FTs must complete before discovery is started.
4131   */
4132 int
4133 lpfc_issue_gidft(struct lpfc_vport *vport)
4134 {
4135         /* Good status, issue CT Request to NameServer */
4136         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4137             (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) {
4138                 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_FCP)) {
4139                         /* Cannot issue NameServer FCP Query, so finish up
4140                          * discovery
4141                          */
4142                         lpfc_printf_vlog(vport, KERN_ERR,
4143                                          LOG_TRACE_EVENT,
4144                                          "0604 %s FC TYPE %x %s\n",
4145                                          "Failed to issue GID_FT to ",
4146                                          FC_TYPE_FCP,
4147                                          "Finishing discovery.");
4148                         return 0;
4149                 }
4150                 vport->gidft_inp++;
4151         }
4152
4153         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4154             (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
4155                 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_NVME)) {
4156                         /* Cannot issue NameServer NVME Query, so finish up
4157                          * discovery
4158                          */
4159                         lpfc_printf_vlog(vport, KERN_ERR,
4160                                          LOG_TRACE_EVENT,
4161                                          "0605 %s FC_TYPE %x %s %d\n",
4162                                          "Failed to issue GID_FT to ",
4163                                          FC_TYPE_NVME,
4164                                          "Finishing discovery: gidftinp ",
4165                                          vport->gidft_inp);
4166                         if (vport->gidft_inp == 0)
4167                                 return 0;
4168                 } else
4169                         vport->gidft_inp++;
4170         }
4171         return vport->gidft_inp;
4172 }
4173
4174 /**
4175  * lpfc_issue_gidpt - issue a GID_PT for all N_Ports
4176  * @vport: The virtual port for which this call is being executed.
4177  *
4178  * This routine will issue a GID_PT to get a list of all N_Ports
4179  *
4180  * Return value :
4181  *   0 - Failure to issue a GID_PT
4182  *   1 - GID_PT issued
4183  **/
4184 int
4185 lpfc_issue_gidpt(struct lpfc_vport *vport)
4186 {
4187         /* Good status, issue CT Request to NameServer */
4188         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) {
4189                 /* Cannot issue NameServer FCP Query, so finish up
4190                  * discovery
4191                  */
4192                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4193                                  "0606 %s Port TYPE %x %s\n",
4194                                  "Failed to issue GID_PT to ",
4195                                  GID_PT_N_PORT,
4196                                  "Finishing discovery.");
4197                 return 0;
4198         }
4199         vport->gidft_inp++;
4200         return 1;
4201 }
4202
4203 /*
4204  * This routine handles processing a NameServer REG_LOGIN mailbox
4205  * command upon completion. It is setup in the LPFC_MBOXQ
4206  * as the completion routine when the command is
4207  * handed off to the SLI layer.
4208  */
4209 void
4210 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4211 {
4212         MAILBOX_t *mb = &pmb->u.mb;
4213         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
4214         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4215         struct lpfc_vport *vport = pmb->vport;
4216         int rc;
4217
4218         pmb->ctx_buf = NULL;
4219         pmb->ctx_ndlp = NULL;
4220         vport->gidft_inp = 0;
4221
4222         if (mb->mbxStatus) {
4223                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4224                                  "0260 Register NameServer error: 0x%x\n",
4225                                  mb->mbxStatus);
4226
4227 out:
4228                 /* decrement the node reference count held for this
4229                  * callback function.
4230                  */
4231                 lpfc_nlp_put(ndlp);
4232                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
4233                 kfree(mp);
4234                 mempool_free(pmb, phba->mbox_mem_pool);
4235
4236                 /* If the node is not registered with the scsi or nvme
4237                  * transport, remove the fabric node.  The failed reg_login
4238                  * is terminal.
4239                  */
4240                 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
4241                         spin_lock_irq(&ndlp->lock);
4242                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
4243                         spin_unlock_irq(&ndlp->lock);
4244                         lpfc_nlp_not_used(ndlp);
4245                 }
4246
4247                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4248                         /*
4249                          * RegLogin failed, use loop map to make discovery
4250                          * list
4251                          */
4252                         lpfc_disc_list_loopmap(vport);
4253
4254                         /* Start discovery */
4255                         lpfc_disc_start(vport);
4256                         return;
4257                 }
4258                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
4259                 return;
4260         }
4261
4262         if (phba->sli_rev < LPFC_SLI_REV4)
4263                 ndlp->nlp_rpi = mb->un.varWords[0];
4264         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4265         ndlp->nlp_type |= NLP_FABRIC;
4266         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4267         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
4268                          "0003 rpi:%x DID:%x flg:%x %d x%px\n",
4269                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
4270                          kref_read(&ndlp->kref),
4271                          ndlp);
4272
4273         if (vport->port_state < LPFC_VPORT_READY) {
4274                 /* Link up discovery requires Fabric registration. */
4275                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
4276                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
4277                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
4278                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
4279
4280                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4281                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP))
4282                         lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, FC_TYPE_FCP);
4283
4284                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4285                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME))
4286                         lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0,
4287                                     FC_TYPE_NVME);
4288
4289                 /* Issue SCR just before NameServer GID_FT Query */
4290                 lpfc_issue_els_scr(vport, 0);
4291
4292                 /* Link was bounced or a Fabric LOGO occurred.  Start EDC
4293                  * with initial FW values provided the congestion mode is
4294                  * not off.  Note that signals may or may not be supported
4295                  * by the adapter but FPIN is provided by default for 1
4296                  * or both missing signals support.
4297                  */
4298                 if (phba->cmf_active_mode != LPFC_CFG_OFF) {
4299                         phba->cgn_reg_fpin = phba->cgn_init_reg_fpin;
4300                         phba->cgn_reg_signal = phba->cgn_init_reg_signal;
4301                         rc = lpfc_issue_els_edc(vport, 0);
4302                         lpfc_printf_log(phba, KERN_INFO,
4303                                         LOG_INIT | LOG_ELS | LOG_DISCOVERY,
4304                                         "4220 EDC issue error x%x, Data: x%x\n",
4305                                         rc, phba->cgn_init_reg_signal);
4306                 } else {
4307                         lpfc_issue_els_rdf(vport, 0);
4308                 }
4309         }
4310
4311         vport->fc_ns_retry = 0;
4312         if (lpfc_issue_gidft(vport) == 0)
4313                 goto out;
4314
4315         /*
4316          * At this point in time we may need to wait for multiple
4317          * SLI_CTNS_GID_FT CT commands to complete before we start discovery.
4318          *
4319          * decrement the node reference count held for this
4320          * callback function.
4321          */
4322         lpfc_nlp_put(ndlp);
4323         lpfc_mbuf_free(phba, mp->virt, mp->phys);
4324         kfree(mp);
4325         mempool_free(pmb, phba->mbox_mem_pool);
4326
4327         return;
4328 }
4329
4330 /*
4331  * This routine handles processing a Fabric Controller REG_LOGIN mailbox
4332  * command upon completion. It is setup in the LPFC_MBOXQ
4333  * as the completion routine when the command is handed off to the SLI layer.
4334  */
4335 void
4336 lpfc_mbx_cmpl_fc_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4337 {
4338         struct lpfc_vport *vport = pmb->vport;
4339         MAILBOX_t *mb = &pmb->u.mb;
4340         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
4341         struct lpfc_nodelist *ndlp;
4342
4343         ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4344         pmb->ctx_ndlp = NULL;
4345         pmb->ctx_buf = NULL;
4346
4347         if (mb->mbxStatus) {
4348                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4349                                  "0933 %s: Register FC login error: 0x%x\n",
4350                                  __func__, mb->mbxStatus);
4351                 goto out;
4352         }
4353
4354         if (phba->sli_rev < LPFC_SLI_REV4)
4355                 ndlp->nlp_rpi = mb->un.varWords[0];
4356
4357         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4358                          "0934 %s: Complete FC x%x RegLogin rpi x%x ste x%x\n",
4359                          __func__, ndlp->nlp_DID, ndlp->nlp_rpi,
4360                          ndlp->nlp_state);
4361
4362         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4363         ndlp->nlp_type |= NLP_FABRIC;
4364         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4365
4366  out:
4367         lpfc_mbuf_free(phba, mp->virt, mp->phys);
4368         kfree(mp);
4369         mempool_free(pmb, phba->mbox_mem_pool);
4370
4371         /* Drop the reference count from the mbox at the end after
4372          * all the current reference to the ndlp have been done.
4373          */
4374         lpfc_nlp_put(ndlp);
4375 }
4376
4377 static void
4378 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4379 {
4380         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4381         struct fc_rport  *rport;
4382         struct lpfc_rport_data *rdata;
4383         struct fc_rport_identifiers rport_ids;
4384         struct lpfc_hba  *phba = vport->phba;
4385         unsigned long flags;
4386
4387         if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4388                 return;
4389
4390         /* Remote port has reappeared. Re-register w/ FC transport */
4391         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
4392         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
4393         rport_ids.port_id = ndlp->nlp_DID;
4394         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
4395
4396
4397         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4398                               "rport add:       did:x%x flg:x%x type x%x",
4399                               ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4400
4401         /* Don't add the remote port if unloading. */
4402         if (vport->load_flag & FC_UNLOADING)
4403                 return;
4404
4405         /*
4406          * Disassociate any older association between this ndlp and rport
4407          */
4408         if (ndlp->rport) {
4409                 rdata = ndlp->rport->dd_data;
4410                 rdata->pnode = NULL;
4411         }
4412
4413         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
4414         if (!rport) {
4415                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
4416                            "Warning: fc_remote_port_add failed\n");
4417                 return;
4418         }
4419
4420         /* Successful port add.  Complete initializing node data */
4421         rport->maxframe_size = ndlp->nlp_maxframe;
4422         rport->supported_classes = ndlp->nlp_class_sup;
4423         rdata = rport->dd_data;
4424         rdata->pnode = lpfc_nlp_get(ndlp);
4425         if (!rdata->pnode) {
4426                 dev_warn(&phba->pcidev->dev,
4427                          "Warning - node ref failed. Unreg rport\n");
4428                 fc_remote_port_delete(rport);
4429                 ndlp->rport = NULL;
4430                 return;
4431         }
4432
4433         spin_lock_irqsave(&ndlp->lock, flags);
4434         ndlp->fc4_xpt_flags |= SCSI_XPT_REGD;
4435         spin_unlock_irqrestore(&ndlp->lock, flags);
4436
4437         if (ndlp->nlp_type & NLP_FCP_TARGET)
4438                 rport_ids.roles |= FC_PORT_ROLE_FCP_TARGET;
4439         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
4440                 rport_ids.roles |= FC_PORT_ROLE_FCP_INITIATOR;
4441         if (ndlp->nlp_type & NLP_NVME_INITIATOR)
4442                 rport_ids.roles |= FC_PORT_ROLE_NVME_INITIATOR;
4443         if (ndlp->nlp_type & NLP_NVME_TARGET)
4444                 rport_ids.roles |= FC_PORT_ROLE_NVME_TARGET;
4445         if (ndlp->nlp_type & NLP_NVME_DISCOVERY)
4446                 rport_ids.roles |= FC_PORT_ROLE_NVME_DISCOVERY;
4447
4448         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
4449                 fc_remote_port_rolechg(rport, rport_ids.roles);
4450
4451         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
4452                          "3183 %s rport x%px DID x%x, role x%x\n",
4453                          __func__, rport, rport->port_id, rport->roles);
4454
4455         if ((rport->scsi_target_id != -1) &&
4456             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
4457                 ndlp->nlp_sid = rport->scsi_target_id;
4458         }
4459
4460         return;
4461 }
4462
4463 static void
4464 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
4465 {
4466         struct fc_rport *rport = ndlp->rport;
4467         struct lpfc_vport *vport = ndlp->vport;
4468
4469         if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4470                 return;
4471
4472         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4473                 "rport delete:    did:x%x flg:x%x type x%x",
4474                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4475
4476         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4477                          "3184 rport unregister x%06x, rport x%px "
4478                          "xptflg x%x\n",
4479                          ndlp->nlp_DID, rport, ndlp->fc4_xpt_flags);
4480
4481         fc_remote_port_delete(rport);
4482         lpfc_nlp_put(ndlp);
4483 }
4484
4485 static void
4486 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
4487 {
4488         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4489         unsigned long iflags;
4490
4491         spin_lock_irqsave(shost->host_lock, iflags);
4492         switch (state) {
4493         case NLP_STE_UNUSED_NODE:
4494                 vport->fc_unused_cnt += count;
4495                 break;
4496         case NLP_STE_PLOGI_ISSUE:
4497                 vport->fc_plogi_cnt += count;
4498                 break;
4499         case NLP_STE_ADISC_ISSUE:
4500                 vport->fc_adisc_cnt += count;
4501                 break;
4502         case NLP_STE_REG_LOGIN_ISSUE:
4503                 vport->fc_reglogin_cnt += count;
4504                 break;
4505         case NLP_STE_PRLI_ISSUE:
4506                 vport->fc_prli_cnt += count;
4507                 break;
4508         case NLP_STE_UNMAPPED_NODE:
4509                 vport->fc_unmap_cnt += count;
4510                 break;
4511         case NLP_STE_MAPPED_NODE:
4512                 vport->fc_map_cnt += count;
4513                 break;
4514         case NLP_STE_NPR_NODE:
4515                 if (vport->fc_npr_cnt == 0 && count == -1)
4516                         vport->fc_npr_cnt = 0;
4517                 else
4518                         vport->fc_npr_cnt += count;
4519                 break;
4520         }
4521         spin_unlock_irqrestore(shost->host_lock, iflags);
4522 }
4523
4524 /* Register a node with backend if not already done */
4525 void
4526 lpfc_nlp_reg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4527 {
4528
4529         unsigned long iflags;
4530
4531         spin_lock_irqsave(&ndlp->lock, iflags);
4532         if (ndlp->fc4_xpt_flags & NLP_XPT_REGD) {
4533                 /* Already registered with backend, trigger rescan */
4534                 spin_unlock_irqrestore(&ndlp->lock, iflags);
4535
4536                 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD &&
4537                     ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY)) {
4538                         lpfc_nvme_rescan_port(vport, ndlp);
4539                 }
4540                 return;
4541         }
4542
4543         ndlp->fc4_xpt_flags |= NLP_XPT_REGD;
4544         spin_unlock_irqrestore(&ndlp->lock, iflags);
4545
4546         if (lpfc_valid_xpt_node(ndlp)) {
4547                 vport->phba->nport_event_cnt++;
4548                 /*
4549                  * Tell the fc transport about the port, if we haven't
4550                  * already. If we have, and it's a scsi entity, be
4551                  */
4552                 lpfc_register_remote_port(vport, ndlp);
4553         }
4554
4555         /* We are done if we do not have any NVME remote node */
4556         if (!(ndlp->nlp_fc4_type & NLP_FC4_NVME))
4557                 return;
4558
4559         /* Notify the NVME transport of this new rport. */
4560         if (vport->phba->sli_rev >= LPFC_SLI_REV4 &&
4561                         ndlp->nlp_fc4_type & NLP_FC4_NVME) {
4562                 if (vport->phba->nvmet_support == 0) {
4563                         /* Register this rport with the transport.
4564                          * Only NVME Target Rports are registered with
4565                          * the transport.
4566                          */
4567                         if (ndlp->nlp_type & NLP_NVME_TARGET) {
4568                                 vport->phba->nport_event_cnt++;
4569                                 lpfc_nvme_register_port(vport, ndlp);
4570                         }
4571                 } else {
4572                         /* Just take an NDLP ref count since the
4573                          * target does not register rports.
4574                          */
4575                         lpfc_nlp_get(ndlp);
4576                 }
4577         }
4578 }
4579
4580 /* Unregister a node with backend if not already done */
4581 void
4582 lpfc_nlp_unreg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4583 {
4584         unsigned long iflags;
4585
4586         spin_lock_irqsave(&ndlp->lock, iflags);
4587         if (!(ndlp->fc4_xpt_flags & NLP_XPT_REGD)) {
4588                 spin_unlock_irqrestore(&ndlp->lock, iflags);
4589                 return;
4590         }
4591
4592         ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD;
4593         spin_unlock_irqrestore(&ndlp->lock, iflags);
4594
4595         if (ndlp->rport &&
4596             ndlp->fc4_xpt_flags & SCSI_XPT_REGD) {
4597                 vport->phba->nport_event_cnt++;
4598                 lpfc_unregister_remote_port(ndlp);
4599         }
4600
4601         if (ndlp->fc4_xpt_flags & NVME_XPT_REGD) {
4602                 vport->phba->nport_event_cnt++;
4603                 if (vport->phba->nvmet_support == 0) {
4604                         /* Start devloss if target. */
4605                         if (ndlp->nlp_type & NLP_NVME_TARGET)
4606                                 lpfc_nvme_unregister_port(vport, ndlp);
4607                 } else {
4608                         /* NVMET has no upcall. */
4609                         lpfc_nlp_put(ndlp);
4610                 }
4611         }
4612
4613 }
4614
4615 /*
4616  * Adisc state change handling
4617  */
4618 static void
4619 lpfc_handle_adisc_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4620                 int new_state)
4621 {
4622         switch (new_state) {
4623         /*
4624          * Any state to ADISC_ISSUE
4625          * Do nothing, adisc cmpl handling will trigger state changes
4626          */
4627         case NLP_STE_ADISC_ISSUE:
4628                 break;
4629
4630         /*
4631          * ADISC_ISSUE to mapped states
4632          * Trigger a registration with backend, it will be nop if
4633          * already registered
4634          */
4635         case NLP_STE_UNMAPPED_NODE:
4636                 ndlp->nlp_type |= NLP_FC_NODE;
4637                 fallthrough;
4638         case NLP_STE_MAPPED_NODE:
4639                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4640                 lpfc_nlp_reg_node(vport, ndlp);
4641                 break;
4642
4643         /*
4644          * ADISC_ISSUE to non-mapped states
4645          * We are moving from ADISC_ISSUE to a non-mapped state because
4646          * ADISC failed, we would have skipped unregistering with
4647          * backend, attempt it now
4648          */
4649         case NLP_STE_NPR_NODE:
4650                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
4651                 fallthrough;
4652         default:
4653                 lpfc_nlp_unreg_node(vport, ndlp);
4654                 break;
4655         }
4656
4657 }
4658
4659 static void
4660 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4661                        int old_state, int new_state)
4662 {
4663         /* Trap ADISC changes here */
4664         if (new_state == NLP_STE_ADISC_ISSUE ||
4665             old_state == NLP_STE_ADISC_ISSUE) {
4666                 lpfc_handle_adisc_state(vport, ndlp, new_state);
4667                 return;
4668         }
4669
4670         if (new_state == NLP_STE_UNMAPPED_NODE) {
4671                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4672                 ndlp->nlp_type |= NLP_FC_NODE;
4673         }
4674         if (new_state == NLP_STE_MAPPED_NODE)
4675                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4676         if (new_state == NLP_STE_NPR_NODE)
4677                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
4678
4679         /* Reg/Unreg for FCP and NVME Transport interface */
4680         if ((old_state == NLP_STE_MAPPED_NODE ||
4681              old_state == NLP_STE_UNMAPPED_NODE)) {
4682                 /* For nodes marked for ADISC, Handle unreg in ADISC cmpl */
4683                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
4684                         lpfc_nlp_unreg_node(vport, ndlp);
4685         }
4686
4687         if (new_state ==  NLP_STE_MAPPED_NODE ||
4688             new_state == NLP_STE_UNMAPPED_NODE)
4689                 lpfc_nlp_reg_node(vport, ndlp);
4690
4691         if ((new_state ==  NLP_STE_MAPPED_NODE) &&
4692                 (vport->stat_data_enabled)) {
4693                 /*
4694                  * A new target is discovered, if there is no buffer for
4695                  * statistical data collection allocate buffer.
4696                  */
4697                 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
4698                                          sizeof(struct lpfc_scsicmd_bkt),
4699                                          GFP_KERNEL);
4700
4701                 if (!ndlp->lat_data)
4702                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4703                                 "0286 lpfc_nlp_state_cleanup failed to "
4704                                 "allocate statistical data buffer DID "
4705                                 "0x%x\n", ndlp->nlp_DID);
4706         }
4707         /*
4708          * If the node just added to Mapped list was an FCP target,
4709          * but the remote port registration failed or assigned a target
4710          * id outside the presentable range - move the node to the
4711          * Unmapped List.
4712          */
4713         if ((new_state == NLP_STE_MAPPED_NODE) &&
4714             (ndlp->nlp_type & NLP_FCP_TARGET) &&
4715             (!ndlp->rport ||
4716              ndlp->rport->scsi_target_id == -1 ||
4717              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
4718                 spin_lock_irq(&ndlp->lock);
4719                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
4720                 spin_unlock_irq(&ndlp->lock);
4721                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4722         }
4723 }
4724
4725 static char *
4726 lpfc_nlp_state_name(char *buffer, size_t size, int state)
4727 {
4728         static char *states[] = {
4729                 [NLP_STE_UNUSED_NODE] = "UNUSED",
4730                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
4731                 [NLP_STE_ADISC_ISSUE] = "ADISC",
4732                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
4733                 [NLP_STE_PRLI_ISSUE] = "PRLI",
4734                 [NLP_STE_LOGO_ISSUE] = "LOGO",
4735                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
4736                 [NLP_STE_MAPPED_NODE] = "MAPPED",
4737                 [NLP_STE_NPR_NODE] = "NPR",
4738         };
4739
4740         if (state < NLP_STE_MAX_STATE && states[state])
4741                 strlcpy(buffer, states[state], size);
4742         else
4743                 snprintf(buffer, size, "unknown (%d)", state);
4744         return buffer;
4745 }
4746
4747 void
4748 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4749                    int state)
4750 {
4751         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4752         int  old_state = ndlp->nlp_state;
4753         int node_dropped = ndlp->nlp_flag & NLP_DROPPED;
4754         char name1[16], name2[16];
4755
4756         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4757                          "0904 NPort state transition x%06x, %s -> %s\n",
4758                          ndlp->nlp_DID,
4759                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
4760                          lpfc_nlp_state_name(name2, sizeof(name2), state));
4761
4762         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4763                 "node statechg    did:x%x old:%d ste:%d",
4764                 ndlp->nlp_DID, old_state, state);
4765
4766         if (node_dropped && old_state == NLP_STE_UNUSED_NODE &&
4767             state != NLP_STE_UNUSED_NODE) {
4768                 ndlp->nlp_flag &= ~NLP_DROPPED;
4769                 lpfc_nlp_get(ndlp);
4770         }
4771
4772         if (old_state == NLP_STE_NPR_NODE &&
4773             state != NLP_STE_NPR_NODE)
4774                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4775         if (old_state == NLP_STE_UNMAPPED_NODE) {
4776                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
4777                 ndlp->nlp_type &= ~NLP_FC_NODE;
4778         }
4779
4780         if (list_empty(&ndlp->nlp_listp)) {
4781                 spin_lock_irq(shost->host_lock);
4782                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4783                 spin_unlock_irq(shost->host_lock);
4784         } else if (old_state)
4785                 lpfc_nlp_counters(vport, old_state, -1);
4786
4787         ndlp->nlp_state = state;
4788         lpfc_nlp_counters(vport, state, 1);
4789         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
4790 }
4791
4792 void
4793 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4794 {
4795         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4796
4797         if (list_empty(&ndlp->nlp_listp)) {
4798                 spin_lock_irq(shost->host_lock);
4799                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4800                 spin_unlock_irq(shost->host_lock);
4801         }
4802 }
4803
4804 void
4805 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4806 {
4807         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4808
4809         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4810         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4811                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4812         spin_lock_irq(shost->host_lock);
4813         list_del_init(&ndlp->nlp_listp);
4814         spin_unlock_irq(shost->host_lock);
4815         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4816                                 NLP_STE_UNUSED_NODE);
4817 }
4818
4819 /**
4820  * lpfc_initialize_node - Initialize all fields of node object
4821  * @vport: Pointer to Virtual Port object.
4822  * @ndlp: Pointer to FC node object.
4823  * @did: FC_ID of the node.
4824  *
4825  * This function is always called when node object need to be initialized.
4826  * It initializes all the fields of the node object. Although the reference
4827  * to phba from @ndlp can be obtained indirectly through it's reference to
4828  * @vport, a direct reference to phba is taken here by @ndlp. This is due
4829  * to the life-span of the @ndlp might go beyond the existence of @vport as
4830  * the final release of ndlp is determined by its reference count. And, the
4831  * operation on @ndlp needs the reference to phba.
4832  **/
4833 static inline void
4834 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4835         uint32_t did)
4836 {
4837         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
4838         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
4839         timer_setup(&ndlp->nlp_delayfunc, lpfc_els_retry_delay, 0);
4840         INIT_LIST_HEAD(&ndlp->recovery_evt.evt_listp);
4841
4842         ndlp->nlp_DID = did;
4843         ndlp->vport = vport;
4844         ndlp->phba = vport->phba;
4845         ndlp->nlp_sid = NLP_NO_SID;
4846         ndlp->nlp_fc4_type = NLP_FC4_NONE;
4847         kref_init(&ndlp->kref);
4848         atomic_set(&ndlp->cmd_pending, 0);
4849         ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
4850         ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
4851 }
4852
4853 void
4854 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4855 {
4856         /*
4857          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
4858          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
4859          * the ndlp from the vport. The ndlp marked as UNUSED on the list
4860          * until ALL other outstanding threads have completed. We check
4861          * that the ndlp not already in the UNUSED state before we proceed.
4862          */
4863         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
4864                 return;
4865         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
4866         ndlp->nlp_flag |= NLP_DROPPED;
4867         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4868                 lpfc_cleanup_vports_rrqs(vport, ndlp);
4869                 lpfc_unreg_rpi(vport, ndlp);
4870         }
4871
4872         lpfc_nlp_put(ndlp);
4873         return;
4874 }
4875
4876 /*
4877  * Start / ReStart rescue timer for Discovery / RSCN handling
4878  */
4879 void
4880 lpfc_set_disctmo(struct lpfc_vport *vport)
4881 {
4882         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4883         struct lpfc_hba  *phba = vport->phba;
4884         uint32_t tmo;
4885
4886         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
4887                 /* For FAN, timeout should be greater than edtov */
4888                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
4889         } else {
4890                 /* Normal discovery timeout should be > than ELS/CT timeout
4891                  * FC spec states we need 3 * ratov for CT requests
4892                  */
4893                 tmo = ((phba->fc_ratov * 3) + 3);
4894         }
4895
4896
4897         if (!timer_pending(&vport->fc_disctmo)) {
4898                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4899                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
4900                         tmo, vport->port_state, vport->fc_flag);
4901         }
4902
4903         mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo));
4904         spin_lock_irq(shost->host_lock);
4905         vport->fc_flag |= FC_DISC_TMO;
4906         spin_unlock_irq(shost->host_lock);
4907
4908         /* Start Discovery Timer state <hba_state> */
4909         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4910                          "0247 Start Discovery Timer state x%x "
4911                          "Data: x%x x%lx x%x x%x\n",
4912                          vport->port_state, tmo,
4913                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
4914                          vport->fc_adisc_cnt);
4915
4916         return;
4917 }
4918
4919 /*
4920  * Cancel rescue timer for Discovery / RSCN handling
4921  */
4922 int
4923 lpfc_can_disctmo(struct lpfc_vport *vport)
4924 {
4925         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4926         unsigned long iflags;
4927
4928         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4929                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
4930                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
4931
4932         /* Turn off discovery timer if its running */
4933         if (vport->fc_flag & FC_DISC_TMO) {
4934                 spin_lock_irqsave(shost->host_lock, iflags);
4935                 vport->fc_flag &= ~FC_DISC_TMO;
4936                 spin_unlock_irqrestore(shost->host_lock, iflags);
4937                 del_timer_sync(&vport->fc_disctmo);
4938                 spin_lock_irqsave(&vport->work_port_lock, iflags);
4939                 vport->work_port_events &= ~WORKER_DISC_TMO;
4940                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
4941         }
4942
4943         /* Cancel Discovery Timer state <hba_state> */
4944         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4945                          "0248 Cancel Discovery Timer state x%x "
4946                          "Data: x%x x%x x%x\n",
4947                          vport->port_state, vport->fc_flag,
4948                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
4949         return 0;
4950 }
4951
4952 /*
4953  * Check specified ring for outstanding IOCB on the SLI queue
4954  * Return true if iocb matches the specified nport
4955  */
4956 int
4957 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
4958                     struct lpfc_sli_ring *pring,
4959                     struct lpfc_iocbq *iocb,
4960                     struct lpfc_nodelist *ndlp)
4961 {
4962         IOCB_t *icmd = &iocb->iocb;
4963         struct lpfc_vport    *vport = ndlp->vport;
4964
4965         if (iocb->vport != vport)
4966                 return 0;
4967
4968         if (pring->ringno == LPFC_ELS_RING) {
4969                 switch (icmd->ulpCommand) {
4970                 case CMD_GEN_REQUEST64_CR:
4971                         if (iocb->context_un.ndlp == ndlp)
4972                                 return 1;
4973                         fallthrough;
4974                 case CMD_ELS_REQUEST64_CR:
4975                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
4976                                 return 1;
4977                         fallthrough;
4978                 case CMD_XMIT_ELS_RSP64_CX:
4979                         if (iocb->context1 == (uint8_t *) ndlp)
4980                                 return 1;
4981                 }
4982         } else if (pring->ringno == LPFC_FCP_RING) {
4983                 /* Skip match check if waiting to relogin to FCP target */
4984                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
4985                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
4986                         return 0;
4987                 }
4988                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
4989                         return 1;
4990                 }
4991         }
4992         return 0;
4993 }
4994
4995 static void
4996 __lpfc_dequeue_nport_iocbs(struct lpfc_hba *phba,
4997                 struct lpfc_nodelist *ndlp, struct lpfc_sli_ring *pring,
4998                 struct list_head *dequeue_list)
4999 {
5000         struct lpfc_iocbq *iocb, *next_iocb;
5001
5002         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
5003                 /* Check to see if iocb matches the nport */
5004                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
5005                         /* match, dequeue */
5006                         list_move_tail(&iocb->list, dequeue_list);
5007         }
5008 }
5009
5010 static void
5011 lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba *phba,
5012                 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
5013 {
5014         struct lpfc_sli *psli = &phba->sli;
5015         uint32_t i;
5016
5017         spin_lock_irq(&phba->hbalock);
5018         for (i = 0; i < psli->num_rings; i++)
5019                 __lpfc_dequeue_nport_iocbs(phba, ndlp, &psli->sli3_ring[i],
5020                                                 dequeue_list);
5021         spin_unlock_irq(&phba->hbalock);
5022 }
5023
5024 static void
5025 lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba *phba,
5026                 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
5027 {
5028         struct lpfc_sli_ring *pring;
5029         struct lpfc_queue *qp = NULL;
5030
5031         spin_lock_irq(&phba->hbalock);
5032         list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
5033                 pring = qp->pring;
5034                 if (!pring)
5035                         continue;
5036                 spin_lock(&pring->ring_lock);
5037                 __lpfc_dequeue_nport_iocbs(phba, ndlp, pring, dequeue_list);
5038                 spin_unlock(&pring->ring_lock);
5039         }
5040         spin_unlock_irq(&phba->hbalock);
5041 }
5042
5043 /*
5044  * Free resources / clean up outstanding I/Os
5045  * associated with nlp_rpi in the LPFC_NODELIST entry.
5046  */
5047 static int
5048 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
5049 {
5050         LIST_HEAD(completions);
5051
5052         lpfc_fabric_abort_nport(ndlp);
5053
5054         /*
5055          * Everything that matches on txcmplq will be returned
5056          * by firmware with a no rpi error.
5057          */
5058         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
5059                 if (phba->sli_rev != LPFC_SLI_REV4)
5060                         lpfc_sli3_dequeue_nport_iocbs(phba, ndlp, &completions);
5061                 else
5062                         lpfc_sli4_dequeue_nport_iocbs(phba, ndlp, &completions);
5063         }
5064
5065         /* Cancel all the IOCBs from the completions list */
5066         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5067                               IOERR_SLI_ABORTED);
5068
5069         return 0;
5070 }
5071
5072 /**
5073  * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO
5074  * @phba: Pointer to HBA context object.
5075  * @pmb: Pointer to mailbox object.
5076  *
5077  * This function will issue an ELS LOGO command after completing
5078  * the UNREG_RPI.
5079  **/
5080 static void
5081 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5082 {
5083         struct lpfc_vport  *vport = pmb->vport;
5084         struct lpfc_nodelist *ndlp;
5085
5086         ndlp = (struct lpfc_nodelist *)(pmb->ctx_ndlp);
5087         if (!ndlp)
5088                 return;
5089         lpfc_issue_els_logo(vport, ndlp, 0);
5090         mempool_free(pmb, phba->mbox_mem_pool);
5091
5092         /* Check to see if there are any deferred events to process */
5093         if ((ndlp->nlp_flag & NLP_UNREG_INP) &&
5094             (ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING)) {
5095                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5096                                  "1434 UNREG cmpl deferred logo x%x "
5097                                  "on NPort x%x Data: x%x x%px\n",
5098                                  ndlp->nlp_rpi, ndlp->nlp_DID,
5099                                  ndlp->nlp_defer_did, ndlp);
5100
5101                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5102                 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
5103                 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
5104         } else {
5105                 /* NLP_RELEASE_RPI is only set for SLI4 ports. */
5106                 if (ndlp->nlp_flag & NLP_RELEASE_RPI) {
5107                         lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi);
5108                         spin_lock_irq(&ndlp->lock);
5109                         ndlp->nlp_flag &= ~NLP_RELEASE_RPI;
5110                         ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
5111                         spin_unlock_irq(&ndlp->lock);
5112                 }
5113                 spin_lock_irq(&ndlp->lock);
5114                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5115                 spin_unlock_irq(&ndlp->lock);
5116         }
5117 }
5118
5119 /*
5120  * Sets the mailbox completion handler to be used for the
5121  * unreg_rpi command. The handler varies based on the state of
5122  * the port and what will be happening to the rpi next.
5123  */
5124 static void
5125 lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba *phba, struct lpfc_vport *vport,
5126         struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox)
5127 {
5128         unsigned long iflags;
5129
5130         /* Driver always gets a reference on the mailbox job
5131          * in support of async jobs.
5132          */
5133         mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
5134         if (!mbox->ctx_ndlp)
5135                 return;
5136
5137         if (ndlp->nlp_flag & NLP_ISSUE_LOGO) {
5138                 mbox->mbox_cmpl = lpfc_nlp_logo_unreg;
5139
5140         } else if (phba->sli_rev == LPFC_SLI_REV4 &&
5141                    (!(vport->load_flag & FC_UNLOADING)) &&
5142                     (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
5143                                       LPFC_SLI_INTF_IF_TYPE_2) &&
5144                     (kref_read(&ndlp->kref) > 0)) {
5145                 mbox->mbox_cmpl = lpfc_sli4_unreg_rpi_cmpl_clr;
5146         } else {
5147                 if (vport->load_flag & FC_UNLOADING) {
5148                         if (phba->sli_rev == LPFC_SLI_REV4) {
5149                                 spin_lock_irqsave(&ndlp->lock, iflags);
5150                                 ndlp->nlp_flag |= NLP_RELEASE_RPI;
5151                                 spin_unlock_irqrestore(&ndlp->lock, iflags);
5152                         }
5153                 }
5154                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5155         }
5156 }
5157
5158 /*
5159  * Free rpi associated with LPFC_NODELIST entry.
5160  * This routine is called from lpfc_freenode(), when we are removing
5161  * a LPFC_NODELIST entry. It is also called if the driver initiates a
5162  * LOGO that completes successfully, and we are waiting to PLOGI back
5163  * to the remote NPort. In addition, it is called after we receive
5164  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
5165  * we are waiting to PLOGI back to the remote NPort.
5166  */
5167 int
5168 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5169 {
5170         struct lpfc_hba *phba = vport->phba;
5171         LPFC_MBOXQ_t    *mbox;
5172         int rc, acc_plogi = 1;
5173         uint16_t rpi;
5174
5175         if (ndlp->nlp_flag & NLP_RPI_REGISTERED ||
5176             ndlp->nlp_flag & NLP_REG_LOGIN_SEND) {
5177                 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
5178                         lpfc_printf_vlog(vport, KERN_INFO,
5179                                          LOG_NODE | LOG_DISCOVERY,
5180                                          "3366 RPI x%x needs to be "
5181                                          "unregistered nlp_flag x%x "
5182                                          "did x%x\n",
5183                                          ndlp->nlp_rpi, ndlp->nlp_flag,
5184                                          ndlp->nlp_DID);
5185
5186                 /* If there is already an UNREG in progress for this ndlp,
5187                  * no need to queue up another one.
5188                  */
5189                 if (ndlp->nlp_flag & NLP_UNREG_INP) {
5190                         lpfc_printf_vlog(vport, KERN_INFO,
5191                                          LOG_NODE | LOG_DISCOVERY,
5192                                          "1436 unreg_rpi SKIP UNREG x%x on "
5193                                          "NPort x%x deferred x%x  flg x%x "
5194                                          "Data: x%px\n",
5195                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5196                                          ndlp->nlp_defer_did,
5197                                          ndlp->nlp_flag, ndlp);
5198                         goto out;
5199                 }
5200
5201                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5202                 if (mbox) {
5203                         /* SLI4 ports require the physical rpi value. */
5204                         rpi = ndlp->nlp_rpi;
5205                         if (phba->sli_rev == LPFC_SLI_REV4)
5206                                 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
5207
5208                         lpfc_unreg_login(phba, vport->vpi, rpi, mbox);
5209                         mbox->vport = vport;
5210                         lpfc_set_unreg_login_mbx_cmpl(phba, vport, ndlp, mbox);
5211                         if (!mbox->ctx_ndlp) {
5212                                 mempool_free(mbox, phba->mbox_mem_pool);
5213                                 return 1;
5214                         }
5215
5216                         if (mbox->mbox_cmpl == lpfc_sli4_unreg_rpi_cmpl_clr)
5217                                 /*
5218                                  * accept PLOGIs after unreg_rpi_cmpl
5219                                  */
5220                                 acc_plogi = 0;
5221                         if (((ndlp->nlp_DID & Fabric_DID_MASK) !=
5222                             Fabric_DID_MASK) &&
5223                             (!(vport->fc_flag & FC_OFFLINE_MODE)))
5224                                 ndlp->nlp_flag |= NLP_UNREG_INP;
5225
5226                         lpfc_printf_vlog(vport, KERN_INFO,
5227                                          LOG_NODE | LOG_DISCOVERY,
5228                                          "1433 unreg_rpi UNREG x%x on "
5229                                          "NPort x%x deferred flg x%x "
5230                                          "Data:x%px\n",
5231                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5232                                          ndlp->nlp_flag, ndlp);
5233
5234                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5235                         if (rc == MBX_NOT_FINISHED) {
5236                                 mempool_free(mbox, phba->mbox_mem_pool);
5237                                 acc_plogi = 1;
5238                         }
5239                 } else {
5240                         lpfc_printf_vlog(vport, KERN_INFO,
5241                                          LOG_NODE | LOG_DISCOVERY,
5242                                          "1444 Failed to allocate mempool "
5243                                          "unreg_rpi UNREG x%x, "
5244                                          "DID x%x, flag x%x, "
5245                                          "ndlp x%px\n",
5246                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5247                                          ndlp->nlp_flag, ndlp);
5248
5249                         /* Because mempool_alloc failed, we
5250                          * will issue a LOGO here and keep the rpi alive if
5251                          * not unloading.
5252                          */
5253                         if (!(vport->load_flag & FC_UNLOADING)) {
5254                                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5255                                 lpfc_issue_els_logo(vport, ndlp, 0);
5256                                 ndlp->nlp_prev_state = ndlp->nlp_state;
5257                                 lpfc_nlp_set_state(vport, ndlp,
5258                                                    NLP_STE_NPR_NODE);
5259                         }
5260
5261                         return 1;
5262                 }
5263                 lpfc_no_rpi(phba, ndlp);
5264 out:
5265                 if (phba->sli_rev != LPFC_SLI_REV4)
5266                         ndlp->nlp_rpi = 0;
5267                 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
5268                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
5269                 if (acc_plogi)
5270                         ndlp->nlp_flag &= ~NLP_LOGO_ACC;
5271                 return 1;
5272         }
5273         ndlp->nlp_flag &= ~NLP_LOGO_ACC;
5274         return 0;
5275 }
5276
5277 /**
5278  * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
5279  * @phba: pointer to lpfc hba data structure.
5280  *
5281  * This routine is invoked to unregister all the currently registered RPIs
5282  * to the HBA.
5283  **/
5284 void
5285 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
5286 {
5287         struct lpfc_vport **vports;
5288         struct lpfc_nodelist *ndlp;
5289         struct Scsi_Host *shost;
5290         int i;
5291
5292         vports = lpfc_create_vport_work_array(phba);
5293         if (!vports) {
5294                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5295                                 "2884 Vport array allocation failed \n");
5296                 return;
5297         }
5298         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5299                 shost = lpfc_shost_from_vport(vports[i]);
5300                 spin_lock_irq(shost->host_lock);
5301                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
5302                         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
5303                                 /* The mempool_alloc might sleep */
5304                                 spin_unlock_irq(shost->host_lock);
5305                                 lpfc_unreg_rpi(vports[i], ndlp);
5306                                 spin_lock_irq(shost->host_lock);
5307                         }
5308                 }
5309                 spin_unlock_irq(shost->host_lock);
5310         }
5311         lpfc_destroy_vport_work_array(phba, vports);
5312 }
5313
5314 void
5315 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
5316 {
5317         struct lpfc_hba  *phba  = vport->phba;
5318         LPFC_MBOXQ_t     *mbox;
5319         int rc;
5320
5321         if (phba->sli_rev == LPFC_SLI_REV4) {
5322                 lpfc_sli4_unreg_all_rpis(vport);
5323                 return;
5324         }
5325
5326         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5327         if (mbox) {
5328                 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT,
5329                                  mbox);
5330                 mbox->vport = vport;
5331                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5332                 mbox->ctx_ndlp = NULL;
5333                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5334                 if (rc != MBX_TIMEOUT)
5335                         mempool_free(mbox, phba->mbox_mem_pool);
5336
5337                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5338                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5339                                          "1836 Could not issue "
5340                                          "unreg_login(all_rpis) status %d\n",
5341                                          rc);
5342         }
5343 }
5344
5345 void
5346 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
5347 {
5348         struct lpfc_hba  *phba  = vport->phba;
5349         LPFC_MBOXQ_t     *mbox;
5350         int rc;
5351
5352         /* Unreg DID is an SLI3 operation. */
5353         if (phba->sli_rev > LPFC_SLI_REV3)
5354                 return;
5355
5356         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5357         if (mbox) {
5358                 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS,
5359                                mbox);
5360                 mbox->vport = vport;
5361                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5362                 mbox->ctx_ndlp = NULL;
5363                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5364                 if (rc != MBX_TIMEOUT)
5365                         mempool_free(mbox, phba->mbox_mem_pool);
5366
5367                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5368                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5369                                          "1815 Could not issue "
5370                                          "unreg_did (default rpis) status %d\n",
5371                                          rc);
5372         }
5373 }
5374
5375 /*
5376  * Free resources associated with LPFC_NODELIST entry
5377  * so it can be freed.
5378  */
5379 static int
5380 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5381 {
5382         struct lpfc_hba  *phba = vport->phba;
5383         LPFC_MBOXQ_t *mb, *nextmb;
5384         struct lpfc_dmabuf *mp;
5385
5386         /* Cleanup node for NPort <nlp_DID> */
5387         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5388                          "0900 Cleanup node for NPort x%x "
5389                          "Data: x%x x%x x%x\n",
5390                          ndlp->nlp_DID, ndlp->nlp_flag,
5391                          ndlp->nlp_state, ndlp->nlp_rpi);
5392         lpfc_dequeue_node(vport, ndlp);
5393
5394         /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */
5395
5396         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
5397         if ((mb = phba->sli.mbox_active)) {
5398                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5399                    !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5400                    (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
5401                         mb->ctx_ndlp = NULL;
5402                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5403                 }
5404         }
5405
5406         spin_lock_irq(&phba->hbalock);
5407         /* Cleanup REG_LOGIN completions which are not yet processed */
5408         list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
5409                 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) ||
5410                         (mb->mbox_flag & LPFC_MBX_IMED_UNREG) ||
5411                         (ndlp != (struct lpfc_nodelist *)mb->ctx_ndlp))
5412                         continue;
5413
5414                 mb->ctx_ndlp = NULL;
5415                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5416         }
5417
5418         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
5419                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5420                    !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5421                     (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
5422                         mp = (struct lpfc_dmabuf *)(mb->ctx_buf);
5423                         if (mp) {
5424                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
5425                                 kfree(mp);
5426                         }
5427                         list_del(&mb->list);
5428                         mempool_free(mb, phba->mbox_mem_pool);
5429                         /* We shall not invoke the lpfc_nlp_put to decrement
5430                          * the ndlp reference count as we are in the process
5431                          * of lpfc_nlp_release.
5432                          */
5433                 }
5434         }
5435         spin_unlock_irq(&phba->hbalock);
5436
5437         lpfc_els_abort(phba, ndlp);
5438
5439         spin_lock_irq(&ndlp->lock);
5440         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
5441         spin_unlock_irq(&ndlp->lock);
5442
5443         ndlp->nlp_last_elscmd = 0;
5444         del_timer_sync(&ndlp->nlp_delayfunc);
5445
5446         list_del_init(&ndlp->els_retry_evt.evt_listp);
5447         list_del_init(&ndlp->dev_loss_evt.evt_listp);
5448         list_del_init(&ndlp->recovery_evt.evt_listp);
5449         lpfc_cleanup_vports_rrqs(vport, ndlp);
5450
5451         if (phba->sli_rev == LPFC_SLI_REV4)
5452                 ndlp->nlp_flag |= NLP_RELEASE_RPI;
5453
5454         return 0;
5455 }
5456
5457 static int
5458 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
5459               uint32_t did)
5460 {
5461         D_ID mydid, ndlpdid, matchdid;
5462
5463         if (did == Bcast_DID)
5464                 return 0;
5465
5466         /* First check for Direct match */
5467         if (ndlp->nlp_DID == did)
5468                 return 1;
5469
5470         /* Next check for area/domain identically equals 0 match */
5471         mydid.un.word = vport->fc_myDID;
5472         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
5473                 return 0;
5474         }
5475
5476         matchdid.un.word = did;
5477         ndlpdid.un.word = ndlp->nlp_DID;
5478         if (matchdid.un.b.id == ndlpdid.un.b.id) {
5479                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
5480                     (mydid.un.b.area == matchdid.un.b.area)) {
5481                         /* This code is supposed to match the ID
5482                          * for a private loop device that is
5483                          * connect to fl_port. But we need to
5484                          * check that the port did not just go
5485                          * from pt2pt to fabric or we could end
5486                          * up matching ndlp->nlp_DID 000001 to
5487                          * fabric DID 0x20101
5488                          */
5489                         if ((ndlpdid.un.b.domain == 0) &&
5490                             (ndlpdid.un.b.area == 0)) {
5491                                 if (ndlpdid.un.b.id &&
5492                                     vport->phba->fc_topology ==
5493                                     LPFC_TOPOLOGY_LOOP)
5494                                         return 1;
5495                         }
5496                         return 0;
5497                 }
5498
5499                 matchdid.un.word = ndlp->nlp_DID;
5500                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
5501                     (mydid.un.b.area == ndlpdid.un.b.area)) {
5502                         if ((matchdid.un.b.domain == 0) &&
5503                             (matchdid.un.b.area == 0)) {
5504                                 if (matchdid.un.b.id)
5505                                         return 1;
5506                         }
5507                 }
5508         }
5509         return 0;
5510 }
5511
5512 /* Search for a nodelist entry */
5513 static struct lpfc_nodelist *
5514 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5515 {
5516         struct lpfc_nodelist *ndlp;
5517         uint32_t data1;
5518
5519         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5520                 if (lpfc_matchdid(vport, ndlp, did)) {
5521                         data1 = (((uint32_t)ndlp->nlp_state << 24) |
5522                                  ((uint32_t)ndlp->nlp_xri << 16) |
5523                                  ((uint32_t)ndlp->nlp_type << 8)
5524                                  );
5525                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5526                                          "0929 FIND node DID "
5527                                          "Data: x%px x%x x%x x%x x%x x%px\n",
5528                                          ndlp, ndlp->nlp_DID,
5529                                          ndlp->nlp_flag, data1, ndlp->nlp_rpi,
5530                                          ndlp->active_rrqs_xri_bitmap);
5531                         return ndlp;
5532                 }
5533         }
5534
5535         /* FIND node did <did> NOT FOUND */
5536         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5537                          "0932 FIND node did x%x NOT FOUND.\n", did);
5538         return NULL;
5539 }
5540
5541 struct lpfc_nodelist *
5542 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5543 {
5544         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5545         struct lpfc_nodelist *ndlp;
5546         unsigned long iflags;
5547
5548         spin_lock_irqsave(shost->host_lock, iflags);
5549         ndlp = __lpfc_findnode_did(vport, did);
5550         spin_unlock_irqrestore(shost->host_lock, iflags);
5551         return ndlp;
5552 }
5553
5554 struct lpfc_nodelist *
5555 lpfc_findnode_mapped(struct lpfc_vport *vport)
5556 {
5557         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5558         struct lpfc_nodelist *ndlp;
5559         uint32_t data1;
5560         unsigned long iflags;
5561
5562         spin_lock_irqsave(shost->host_lock, iflags);
5563
5564         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5565                 if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE ||
5566                     ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
5567                         data1 = (((uint32_t)ndlp->nlp_state << 24) |
5568                                  ((uint32_t)ndlp->nlp_xri << 16) |
5569                                  ((uint32_t)ndlp->nlp_type << 8) |
5570                                  ((uint32_t)ndlp->nlp_rpi & 0xff));
5571                         spin_unlock_irqrestore(shost->host_lock, iflags);
5572                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5573                                          "2025 FIND node DID "
5574                                          "Data: x%px x%x x%x x%x x%px\n",
5575                                          ndlp, ndlp->nlp_DID,
5576                                          ndlp->nlp_flag, data1,
5577                                          ndlp->active_rrqs_xri_bitmap);
5578                         return ndlp;
5579                 }
5580         }
5581         spin_unlock_irqrestore(shost->host_lock, iflags);
5582
5583         /* FIND node did <did> NOT FOUND */
5584         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5585                          "2026 FIND mapped did NOT FOUND.\n");
5586         return NULL;
5587 }
5588
5589 struct lpfc_nodelist *
5590 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
5591 {
5592         struct lpfc_nodelist *ndlp;
5593
5594         ndlp = lpfc_findnode_did(vport, did);
5595         if (!ndlp) {
5596                 if (vport->phba->nvmet_support)
5597                         return NULL;
5598                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
5599                     lpfc_rscn_payload_check(vport, did) == 0)
5600                         return NULL;
5601                 ndlp = lpfc_nlp_init(vport, did);
5602                 if (!ndlp)
5603                         return NULL;
5604                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5605
5606                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5607                                  "6453 Setup New Node 2B_DISC x%x "
5608                                  "Data:x%x x%x x%x\n",
5609                                  ndlp->nlp_DID, ndlp->nlp_flag,
5610                                  ndlp->nlp_state, vport->fc_flag);
5611
5612                 spin_lock_irq(&ndlp->lock);
5613                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5614                 spin_unlock_irq(&ndlp->lock);
5615                 return ndlp;
5616         }
5617
5618         /* The NVME Target does not want to actively manage an rport.
5619          * The goal is to allow the target to reset its state and clear
5620          * pending IO in preparation for the initiator to recover.
5621          */
5622         if ((vport->fc_flag & FC_RSCN_MODE) &&
5623             !(vport->fc_flag & FC_NDISC_ACTIVE)) {
5624                 if (lpfc_rscn_payload_check(vport, did)) {
5625
5626                         /* Since this node is marked for discovery,
5627                          * delay timeout is not needed.
5628                          */
5629                         lpfc_cancel_retry_delay_tmo(vport, ndlp);
5630
5631                         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5632                                          "6455 Setup RSCN Node 2B_DISC x%x "
5633                                          "Data:x%x x%x x%x\n",
5634                                          ndlp->nlp_DID, ndlp->nlp_flag,
5635                                          ndlp->nlp_state, vport->fc_flag);
5636
5637                         /* NVME Target mode waits until rport is known to be
5638                          * impacted by the RSCN before it transitions.  No
5639                          * active management - just go to NPR provided the
5640                          * node had a valid login.
5641                          */
5642                         if (vport->phba->nvmet_support)
5643                                 return ndlp;
5644
5645                         /* If we've already received a PLOGI from this NPort
5646                          * we don't need to try to discover it again.
5647                          */
5648                         if (ndlp->nlp_flag & NLP_RCV_PLOGI &&
5649                             !(ndlp->nlp_type &
5650                              (NLP_FCP_TARGET | NLP_NVME_TARGET)))
5651                                 return NULL;
5652
5653                         ndlp->nlp_prev_state = ndlp->nlp_state;
5654                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5655
5656                         spin_lock_irq(&ndlp->lock);
5657                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5658                         spin_unlock_irq(&ndlp->lock);
5659                 } else {
5660                         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5661                                          "6456 Skip Setup RSCN Node x%x "
5662                                          "Data:x%x x%x x%x\n",
5663                                          ndlp->nlp_DID, ndlp->nlp_flag,
5664                                          ndlp->nlp_state, vport->fc_flag);
5665                         ndlp = NULL;
5666                 }
5667         } else {
5668                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5669                                  "6457 Setup Active Node 2B_DISC x%x "
5670                                  "Data:x%x x%x x%x\n",
5671                                  ndlp->nlp_DID, ndlp->nlp_flag,
5672                                  ndlp->nlp_state, vport->fc_flag);
5673
5674                 /* If the initiator received a PLOGI from this NPort or if the
5675                  * initiator is already in the process of discovery on it,
5676                  * there's no need to try to discover it again.
5677                  */
5678                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
5679                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5680                     (!vport->phba->nvmet_support &&
5681                      ndlp->nlp_flag & NLP_RCV_PLOGI))
5682                         return NULL;
5683
5684                 if (vport->phba->nvmet_support)
5685                         return ndlp;
5686
5687                 /* Moving to NPR state clears unsolicited flags and
5688                  * allows for rediscovery
5689                  */
5690                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5691
5692                 spin_lock_irq(&ndlp->lock);
5693                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5694                 spin_unlock_irq(&ndlp->lock);
5695         }
5696         return ndlp;
5697 }
5698
5699 /* Build a list of nodes to discover based on the loopmap */
5700 void
5701 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
5702 {
5703         struct lpfc_hba  *phba = vport->phba;
5704         int j;
5705         uint32_t alpa, index;
5706
5707         if (!lpfc_is_link_up(phba))
5708                 return;
5709
5710         if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
5711                 return;
5712
5713         /* Check for loop map present or not */
5714         if (phba->alpa_map[0]) {
5715                 for (j = 1; j <= phba->alpa_map[0]; j++) {
5716                         alpa = phba->alpa_map[j];
5717                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
5718                                 continue;
5719                         lpfc_setup_disc_node(vport, alpa);
5720                 }
5721         } else {
5722                 /* No alpamap, so try all alpa's */
5723                 for (j = 0; j < FC_MAXLOOP; j++) {
5724                         /* If cfg_scan_down is set, start from highest
5725                          * ALPA (0xef) to lowest (0x1).
5726                          */
5727                         if (vport->cfg_scan_down)
5728                                 index = j;
5729                         else
5730                                 index = FC_MAXLOOP - j - 1;
5731                         alpa = lpfcAlpaArray[index];
5732                         if ((vport->fc_myDID & 0xff) == alpa)
5733                                 continue;
5734                         lpfc_setup_disc_node(vport, alpa);
5735                 }
5736         }
5737         return;
5738 }
5739
5740 /* SLI3 only */
5741 void
5742 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
5743 {
5744         LPFC_MBOXQ_t *mbox;
5745         struct lpfc_sli *psli = &phba->sli;
5746         struct lpfc_sli_ring *extra_ring = &psli->sli3_ring[LPFC_EXTRA_RING];
5747         struct lpfc_sli_ring *fcp_ring   = &psli->sli3_ring[LPFC_FCP_RING];
5748         int  rc;
5749
5750         /*
5751          * if it's not a physical port or if we already send
5752          * clear_la then don't send it.
5753          */
5754         if ((phba->link_state >= LPFC_CLEAR_LA) ||
5755             (vport->port_type != LPFC_PHYSICAL_PORT) ||
5756                 (phba->sli_rev == LPFC_SLI_REV4))
5757                 return;
5758
5759                         /* Link up discovery */
5760         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
5761                 phba->link_state = LPFC_CLEAR_LA;
5762                 lpfc_clear_la(phba, mbox);
5763                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
5764                 mbox->vport = vport;
5765                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5766                 if (rc == MBX_NOT_FINISHED) {
5767                         mempool_free(mbox, phba->mbox_mem_pool);
5768                         lpfc_disc_flush_list(vport);
5769                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5770                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5771                         phba->link_state = LPFC_HBA_ERROR;
5772                 }
5773         }
5774 }
5775
5776 /* Reg_vpi to tell firmware to resume normal operations */
5777 void
5778 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
5779 {
5780         LPFC_MBOXQ_t *regvpimbox;
5781
5782         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5783         if (regvpimbox) {
5784                 lpfc_reg_vpi(vport, regvpimbox);
5785                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
5786                 regvpimbox->vport = vport;
5787                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
5788                                         == MBX_NOT_FINISHED) {
5789                         mempool_free(regvpimbox, phba->mbox_mem_pool);
5790                 }
5791         }
5792 }
5793
5794 /* Start Link up / RSCN discovery on NPR nodes */
5795 void
5796 lpfc_disc_start(struct lpfc_vport *vport)
5797 {
5798         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5799         struct lpfc_hba  *phba = vport->phba;
5800         uint32_t num_sent;
5801         uint32_t clear_la_pending;
5802
5803         if (!lpfc_is_link_up(phba)) {
5804                 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
5805                                  "3315 Link is not up %x\n",
5806                                  phba->link_state);
5807                 return;
5808         }
5809
5810         if (phba->link_state == LPFC_CLEAR_LA)
5811                 clear_la_pending = 1;
5812         else
5813                 clear_la_pending = 0;
5814
5815         if (vport->port_state < LPFC_VPORT_READY)
5816                 vport->port_state = LPFC_DISC_AUTH;
5817
5818         lpfc_set_disctmo(vport);
5819
5820         vport->fc_prevDID = vport->fc_myDID;
5821         vport->num_disc_nodes = 0;
5822
5823         /* Start Discovery state <hba_state> */
5824         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5825                          "0202 Start Discovery port state x%x "
5826                          "flg x%x Data: x%x x%x x%x\n",
5827                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
5828                          vport->fc_adisc_cnt, vport->fc_npr_cnt);
5829
5830         /* First do ADISCs - if any */
5831         num_sent = lpfc_els_disc_adisc(vport);
5832
5833         if (num_sent)
5834                 return;
5835
5836         /* Register the VPI for SLI3, NPIV only. */
5837         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
5838             !(vport->fc_flag & FC_PT2PT) &&
5839             !(vport->fc_flag & FC_RSCN_MODE) &&
5840             (phba->sli_rev < LPFC_SLI_REV4)) {
5841                 lpfc_issue_clear_la(phba, vport);
5842                 lpfc_issue_reg_vpi(phba, vport);
5843                 return;
5844         }
5845
5846         /*
5847          * For SLI2, we need to set port_state to READY and continue
5848          * discovery.
5849          */
5850         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
5851                 /* If we get here, there is nothing to ADISC */
5852                 lpfc_issue_clear_la(phba, vport);
5853
5854                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
5855                         vport->num_disc_nodes = 0;
5856                         /* go thru NPR nodes and issue ELS PLOGIs */
5857                         if (vport->fc_npr_cnt)
5858                                 lpfc_els_disc_plogi(vport);
5859
5860                         if (!vport->num_disc_nodes) {
5861                                 spin_lock_irq(shost->host_lock);
5862                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
5863                                 spin_unlock_irq(shost->host_lock);
5864                                 lpfc_can_disctmo(vport);
5865                         }
5866                 }
5867                 vport->port_state = LPFC_VPORT_READY;
5868         } else {
5869                 /* Next do PLOGIs - if any */
5870                 num_sent = lpfc_els_disc_plogi(vport);
5871
5872                 if (num_sent)
5873                         return;
5874
5875                 if (vport->fc_flag & FC_RSCN_MODE) {
5876                         /* Check to see if more RSCNs came in while we
5877                          * were processing this one.
5878                          */
5879                         if ((vport->fc_rscn_id_cnt == 0) &&
5880                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
5881                                 spin_lock_irq(shost->host_lock);
5882                                 vport->fc_flag &= ~FC_RSCN_MODE;
5883                                 spin_unlock_irq(shost->host_lock);
5884                                 lpfc_can_disctmo(vport);
5885                         } else
5886                                 lpfc_els_handle_rscn(vport);
5887                 }
5888         }
5889         return;
5890 }
5891
5892 /*
5893  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
5894  *  ring the match the sppecified nodelist.
5895  */
5896 static void
5897 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
5898 {
5899         LIST_HEAD(completions);
5900         IOCB_t     *icmd;
5901         struct lpfc_iocbq    *iocb, *next_iocb;
5902         struct lpfc_sli_ring *pring;
5903
5904         pring = lpfc_phba_elsring(phba);
5905         if (unlikely(!pring))
5906                 return;
5907
5908         /* Error matching iocb on txq or txcmplq
5909          * First check the txq.
5910          */
5911         spin_lock_irq(&phba->hbalock);
5912         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
5913                 if (iocb->context1 != ndlp) {
5914                         continue;
5915                 }
5916                 icmd = &iocb->iocb;
5917                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
5918                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
5919
5920                         list_move_tail(&iocb->list, &completions);
5921                 }
5922         }
5923
5924         /* Next check the txcmplq */
5925         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
5926                 if (iocb->context1 != ndlp) {
5927                         continue;
5928                 }
5929                 icmd = &iocb->iocb;
5930                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
5931                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
5932                         lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL);
5933                 }
5934         }
5935         spin_unlock_irq(&phba->hbalock);
5936
5937         /* Make sure HBA is alive */
5938         lpfc_issue_hb_tmo(phba);
5939
5940         /* Cancel all the IOCBs from the completions list */
5941         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5942                               IOERR_SLI_ABORTED);
5943 }
5944
5945 static void
5946 lpfc_disc_flush_list(struct lpfc_vport *vport)
5947 {
5948         struct lpfc_nodelist *ndlp, *next_ndlp;
5949         struct lpfc_hba *phba = vport->phba;
5950
5951         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
5952                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
5953                                          nlp_listp) {
5954                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5955                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
5956                                 lpfc_free_tx(phba, ndlp);
5957                         }
5958                 }
5959         }
5960 }
5961
5962 void
5963 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
5964 {
5965         lpfc_els_flush_rscn(vport);
5966         lpfc_els_flush_cmd(vport);
5967         lpfc_disc_flush_list(vport);
5968 }
5969
5970 /*****************************************************************************/
5971 /*
5972  * NAME:     lpfc_disc_timeout
5973  *
5974  * FUNCTION: Fibre Channel driver discovery timeout routine.
5975  *
5976  * EXECUTION ENVIRONMENT: interrupt only
5977  *
5978  * CALLED FROM:
5979  *      Timer function
5980  *
5981  * RETURNS:
5982  *      none
5983  */
5984 /*****************************************************************************/
5985 void
5986 lpfc_disc_timeout(struct timer_list *t)
5987 {
5988         struct lpfc_vport *vport = from_timer(vport, t, fc_disctmo);
5989         struct lpfc_hba   *phba = vport->phba;
5990         uint32_t tmo_posted;
5991         unsigned long flags = 0;
5992
5993         if (unlikely(!phba))
5994                 return;
5995
5996         spin_lock_irqsave(&vport->work_port_lock, flags);
5997         tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
5998         if (!tmo_posted)
5999                 vport->work_port_events |= WORKER_DISC_TMO;
6000         spin_unlock_irqrestore(&vport->work_port_lock, flags);
6001
6002         if (!tmo_posted)
6003                 lpfc_worker_wake_up(phba);
6004         return;
6005 }
6006
6007 static void
6008 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
6009 {
6010         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6011         struct lpfc_hba  *phba = vport->phba;
6012         struct lpfc_sli  *psli = &phba->sli;
6013         struct lpfc_nodelist *ndlp, *next_ndlp;
6014         LPFC_MBOXQ_t *initlinkmbox;
6015         int rc, clrlaerr = 0;
6016
6017         if (!(vport->fc_flag & FC_DISC_TMO))
6018                 return;
6019
6020         spin_lock_irq(shost->host_lock);
6021         vport->fc_flag &= ~FC_DISC_TMO;
6022         spin_unlock_irq(shost->host_lock);
6023
6024         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6025                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
6026                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
6027
6028         switch (vport->port_state) {
6029
6030         case LPFC_LOCAL_CFG_LINK:
6031                 /*
6032                  * port_state is identically  LPFC_LOCAL_CFG_LINK while
6033                  * waiting for FAN timeout
6034                  */
6035                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
6036                                  "0221 FAN timeout\n");
6037
6038                 /* Start discovery by sending FLOGI, clean up old rpis */
6039                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6040                                          nlp_listp) {
6041                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
6042                                 continue;
6043                         if (ndlp->nlp_type & NLP_FABRIC) {
6044                                 /* Clean up the ndlp on Fabric connections */
6045                                 lpfc_drop_node(vport, ndlp);
6046
6047                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
6048                                 /* Fail outstanding IO now since device
6049                                  * is marked for PLOGI.
6050                                  */
6051                                 lpfc_unreg_rpi(vport, ndlp);
6052                         }
6053                 }
6054                 if (vport->port_state != LPFC_FLOGI) {
6055                         if (phba->sli_rev <= LPFC_SLI_REV3)
6056                                 lpfc_initial_flogi(vport);
6057                         else
6058                                 lpfc_issue_init_vfi(vport);
6059                         return;
6060                 }
6061                 break;
6062
6063         case LPFC_FDISC:
6064         case LPFC_FLOGI:
6065         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
6066                 /* Initial FLOGI timeout */
6067                 lpfc_printf_vlog(vport, KERN_ERR,
6068                                  LOG_TRACE_EVENT,
6069                                  "0222 Initial %s timeout\n",
6070                                  vport->vpi ? "FDISC" : "FLOGI");
6071
6072                 /* Assume no Fabric and go on with discovery.
6073                  * Check for outstanding ELS FLOGI to abort.
6074                  */
6075
6076                 /* FLOGI failed, so just use loop map to make discovery list */
6077                 lpfc_disc_list_loopmap(vport);
6078
6079                 /* Start discovery */
6080                 lpfc_disc_start(vport);
6081                 break;
6082
6083         case LPFC_FABRIC_CFG_LINK:
6084         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
6085            NameServer login */
6086                 lpfc_printf_vlog(vport, KERN_ERR,
6087                                  LOG_TRACE_EVENT,
6088                                  "0223 Timeout while waiting for "
6089                                  "NameServer login\n");
6090                 /* Next look for NameServer ndlp */
6091                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
6092                 if (ndlp)
6093                         lpfc_els_abort(phba, ndlp);
6094
6095                 /* ReStart discovery */
6096                 goto restart_disc;
6097
6098         case LPFC_NS_QRY:
6099         /* Check for wait for NameServer Rsp timeout */
6100                 lpfc_printf_vlog(vport, KERN_ERR,
6101                                  LOG_TRACE_EVENT,
6102                                  "0224 NameServer Query timeout "
6103                                  "Data: x%x x%x\n",
6104                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
6105
6106                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
6107                         /* Try it one more time */
6108                         vport->fc_ns_retry++;
6109                         vport->gidft_inp = 0;
6110                         rc = lpfc_issue_gidft(vport);
6111                         if (rc == 0)
6112                                 break;
6113                 }
6114                 vport->fc_ns_retry = 0;
6115
6116 restart_disc:
6117                 /*
6118                  * Discovery is over.
6119                  * set port_state to PORT_READY if SLI2.
6120                  * cmpl_reg_vpi will set port_state to READY for SLI3.
6121                  */
6122                 if (phba->sli_rev < LPFC_SLI_REV4) {
6123                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
6124                                 lpfc_issue_reg_vpi(phba, vport);
6125                         else  {
6126                                 lpfc_issue_clear_la(phba, vport);
6127                                 vport->port_state = LPFC_VPORT_READY;
6128                         }
6129                 }
6130
6131                 /* Setup and issue mailbox INITIALIZE LINK command */
6132                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6133                 if (!initlinkmbox) {
6134                         lpfc_printf_vlog(vport, KERN_ERR,
6135                                          LOG_TRACE_EVENT,
6136                                          "0206 Device Discovery "
6137                                          "completion error\n");
6138                         phba->link_state = LPFC_HBA_ERROR;
6139                         break;
6140                 }
6141
6142                 lpfc_linkdown(phba);
6143                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
6144                                phba->cfg_link_speed);
6145                 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
6146                 initlinkmbox->vport = vport;
6147                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
6148                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
6149                 lpfc_set_loopback_flag(phba);
6150                 if (rc == MBX_NOT_FINISHED)
6151                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
6152
6153                 break;
6154
6155         case LPFC_DISC_AUTH:
6156         /* Node Authentication timeout */
6157                 lpfc_printf_vlog(vport, KERN_ERR,
6158                                  LOG_TRACE_EVENT,
6159                                  "0227 Node Authentication timeout\n");
6160                 lpfc_disc_flush_list(vport);
6161
6162                 /*
6163                  * set port_state to PORT_READY if SLI2.
6164                  * cmpl_reg_vpi will set port_state to READY for SLI3.
6165                  */
6166                 if (phba->sli_rev < LPFC_SLI_REV4) {
6167                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
6168                                 lpfc_issue_reg_vpi(phba, vport);
6169                         else  { /* NPIV Not enabled */
6170                                 lpfc_issue_clear_la(phba, vport);
6171                                 vport->port_state = LPFC_VPORT_READY;
6172                         }
6173                 }
6174                 break;
6175
6176         case LPFC_VPORT_READY:
6177                 if (vport->fc_flag & FC_RSCN_MODE) {
6178                         lpfc_printf_vlog(vport, KERN_ERR,
6179                                          LOG_TRACE_EVENT,
6180                                          "0231 RSCN timeout Data: x%x "
6181                                          "x%x\n",
6182                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
6183
6184                         /* Cleanup any outstanding ELS commands */
6185                         lpfc_els_flush_cmd(vport);
6186
6187                         lpfc_els_flush_rscn(vport);
6188                         lpfc_disc_flush_list(vport);
6189                 }
6190                 break;
6191
6192         default:
6193                 lpfc_printf_vlog(vport, KERN_ERR,
6194                                  LOG_TRACE_EVENT,
6195                                  "0273 Unexpected discovery timeout, "
6196                                  "vport State x%x\n", vport->port_state);
6197                 break;
6198         }
6199
6200         switch (phba->link_state) {
6201         case LPFC_CLEAR_LA:
6202                                 /* CLEAR LA timeout */
6203                 lpfc_printf_vlog(vport, KERN_ERR,
6204                                  LOG_TRACE_EVENT,
6205                                  "0228 CLEAR LA timeout\n");
6206                 clrlaerr = 1;
6207                 break;
6208
6209         case LPFC_LINK_UP:
6210                 lpfc_issue_clear_la(phba, vport);
6211                 fallthrough;
6212         case LPFC_LINK_UNKNOWN:
6213         case LPFC_WARM_START:
6214         case LPFC_INIT_START:
6215         case LPFC_INIT_MBX_CMDS:
6216         case LPFC_LINK_DOWN:
6217         case LPFC_HBA_ERROR:
6218                 lpfc_printf_vlog(vport, KERN_ERR,
6219                                  LOG_TRACE_EVENT,
6220                                  "0230 Unexpected timeout, hba link "
6221                                  "state x%x\n", phba->link_state);
6222                 clrlaerr = 1;
6223                 break;
6224
6225         case LPFC_HBA_READY:
6226                 break;
6227         }
6228
6229         if (clrlaerr) {
6230                 lpfc_disc_flush_list(vport);
6231                 if (phba->sli_rev != LPFC_SLI_REV4) {
6232                         psli->sli3_ring[(LPFC_EXTRA_RING)].flag &=
6233                                 ~LPFC_STOP_IOCB_EVENT;
6234                         psli->sli3_ring[LPFC_FCP_RING].flag &=
6235                                 ~LPFC_STOP_IOCB_EVENT;
6236                 }
6237                 vport->port_state = LPFC_VPORT_READY;
6238         }
6239         return;
6240 }
6241
6242 /*
6243  * This routine handles processing a NameServer REG_LOGIN mailbox
6244  * command upon completion. It is setup in the LPFC_MBOXQ
6245  * as the completion routine when the command is
6246  * handed off to the SLI layer.
6247  */
6248 void
6249 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
6250 {
6251         MAILBOX_t *mb = &pmb->u.mb;
6252         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
6253         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
6254         struct lpfc_vport    *vport = pmb->vport;
6255
6256         pmb->ctx_buf = NULL;
6257         pmb->ctx_ndlp = NULL;
6258
6259         if (phba->sli_rev < LPFC_SLI_REV4)
6260                 ndlp->nlp_rpi = mb->un.varWords[0];
6261         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
6262         ndlp->nlp_type |= NLP_FABRIC;
6263         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
6264         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
6265                          "0004 rpi:%x DID:%x flg:%x %d x%px\n",
6266                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
6267                          kref_read(&ndlp->kref),
6268                          ndlp);
6269         /*
6270          * Start issuing Fabric-Device Management Interface (FDMI) command to
6271          * 0xfffffa (FDMI well known port).
6272          * DHBA -> DPRT -> RHBA -> RPA  (physical port)
6273          * DPRT -> RPRT (vports)
6274          */
6275         if (vport->port_type == LPFC_PHYSICAL_PORT) {
6276                 phba->link_flag &= ~LS_CT_VEN_RPA; /* For extra Vendor RPA */
6277                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA, 0);
6278         } else {
6279                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DPRT, 0);
6280         }
6281
6282
6283         /* decrement the node reference count held for this callback
6284          * function.
6285          */
6286         lpfc_nlp_put(ndlp);
6287         lpfc_mbuf_free(phba, mp->virt, mp->phys);
6288         kfree(mp);
6289         mempool_free(pmb, phba->mbox_mem_pool);
6290
6291         return;
6292 }
6293
6294 static int
6295 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
6296 {
6297         uint16_t *rpi = param;
6298
6299         return ndlp->nlp_rpi == *rpi;
6300 }
6301
6302 static int
6303 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
6304 {
6305         return memcmp(&ndlp->nlp_portname, param,
6306                       sizeof(ndlp->nlp_portname)) == 0;
6307 }
6308
6309 static struct lpfc_nodelist *
6310 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
6311 {
6312         struct lpfc_nodelist *ndlp;
6313
6314         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
6315                 if (filter(ndlp, param)) {
6316                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6317                                          "3185 FIND node filter %ps DID "
6318                                          "ndlp x%px did x%x flg x%x st x%x "
6319                                          "xri x%x type x%x rpi x%x\n",
6320                                          filter, ndlp, ndlp->nlp_DID,
6321                                          ndlp->nlp_flag, ndlp->nlp_state,
6322                                          ndlp->nlp_xri, ndlp->nlp_type,
6323                                          ndlp->nlp_rpi);
6324                         return ndlp;
6325                 }
6326         }
6327         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6328                          "3186 FIND node filter %ps NOT FOUND.\n", filter);
6329         return NULL;
6330 }
6331
6332 /*
6333  * This routine looks up the ndlp lists for the given RPI. If rpi found it
6334  * returns the node list element pointer else return NULL.
6335  */
6336 struct lpfc_nodelist *
6337 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6338 {
6339         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
6340 }
6341
6342 /*
6343  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
6344  * returns the node element list pointer else return NULL.
6345  */
6346 struct lpfc_nodelist *
6347 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
6348 {
6349         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6350         struct lpfc_nodelist *ndlp;
6351
6352         spin_lock_irq(shost->host_lock);
6353         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
6354         spin_unlock_irq(shost->host_lock);
6355         return ndlp;
6356 }
6357
6358 /*
6359  * This routine looks up the ndlp lists for the given RPI. If the rpi
6360  * is found, the routine returns the node element list pointer else
6361  * return NULL.
6362  */
6363 struct lpfc_nodelist *
6364 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6365 {
6366         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6367         struct lpfc_nodelist *ndlp;
6368         unsigned long flags;
6369
6370         spin_lock_irqsave(shost->host_lock, flags);
6371         ndlp = __lpfc_findnode_rpi(vport, rpi);
6372         spin_unlock_irqrestore(shost->host_lock, flags);
6373         return ndlp;
6374 }
6375
6376 /**
6377  * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
6378  * @phba: pointer to lpfc hba data structure.
6379  * @vpi: the physical host virtual N_Port identifier.
6380  *
6381  * This routine finds a vport on a HBA (referred by @phba) through a
6382  * @vpi. The function walks the HBA's vport list and returns the address
6383  * of the vport with the matching @vpi.
6384  *
6385  * Return code
6386  *    NULL - No vport with the matching @vpi found
6387  *    Otherwise - Address to the vport with the matching @vpi.
6388  **/
6389 struct lpfc_vport *
6390 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
6391 {
6392         struct lpfc_vport *vport;
6393         unsigned long flags;
6394         int i = 0;
6395
6396         /* The physical ports are always vpi 0 - translate is unnecessary. */
6397         if (vpi > 0) {
6398                 /*
6399                  * Translate the physical vpi to the logical vpi.  The
6400                  * vport stores the logical vpi.
6401                  */
6402                 for (i = 0; i <= phba->max_vpi; i++) {
6403                         if (vpi == phba->vpi_ids[i])
6404                                 break;
6405                 }
6406
6407                 if (i > phba->max_vpi) {
6408                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6409                                         "2936 Could not find Vport mapped "
6410                                         "to vpi %d\n", vpi);
6411                         return NULL;
6412                 }
6413         }
6414
6415         spin_lock_irqsave(&phba->port_list_lock, flags);
6416         list_for_each_entry(vport, &phba->port_list, listentry) {
6417                 if (vport->vpi == i) {
6418                         spin_unlock_irqrestore(&phba->port_list_lock, flags);
6419                         return vport;
6420                 }
6421         }
6422         spin_unlock_irqrestore(&phba->port_list_lock, flags);
6423         return NULL;
6424 }
6425
6426 struct lpfc_nodelist *
6427 lpfc_nlp_init(struct lpfc_vport *vport, uint32_t did)
6428 {
6429         struct lpfc_nodelist *ndlp;
6430         int rpi = LPFC_RPI_ALLOC_ERROR;
6431
6432         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6433                 rpi = lpfc_sli4_alloc_rpi(vport->phba);
6434                 if (rpi == LPFC_RPI_ALLOC_ERROR)
6435                         return NULL;
6436         }
6437
6438         ndlp = mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
6439         if (!ndlp) {
6440                 if (vport->phba->sli_rev == LPFC_SLI_REV4)
6441                         lpfc_sli4_free_rpi(vport->phba, rpi);
6442                 return NULL;
6443         }
6444
6445         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
6446
6447         spin_lock_init(&ndlp->lock);
6448
6449         lpfc_initialize_node(vport, ndlp, did);
6450         INIT_LIST_HEAD(&ndlp->nlp_listp);
6451         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6452                 ndlp->nlp_rpi = rpi;
6453                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
6454                                  "0007 Init New ndlp x%px, rpi:x%x DID:%x "
6455                                  "flg:x%x refcnt:%d\n",
6456                                  ndlp, ndlp->nlp_rpi, ndlp->nlp_DID,
6457                                  ndlp->nlp_flag, kref_read(&ndlp->kref));
6458
6459                 ndlp->active_rrqs_xri_bitmap =
6460                                 mempool_alloc(vport->phba->active_rrq_pool,
6461                                               GFP_KERNEL);
6462                 if (ndlp->active_rrqs_xri_bitmap)
6463                         memset(ndlp->active_rrqs_xri_bitmap, 0,
6464                                ndlp->phba->cfg_rrq_xri_bitmap_sz);
6465         }
6466
6467
6468
6469         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
6470                 "node init:       did:x%x",
6471                 ndlp->nlp_DID, 0, 0);
6472
6473         return ndlp;
6474 }
6475
6476 /* This routine releases all resources associated with a specifc NPort's ndlp
6477  * and mempool_free's the nodelist.
6478  */
6479 static void
6480 lpfc_nlp_release(struct kref *kref)
6481 {
6482         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
6483                                                   kref);
6484         struct lpfc_vport *vport = ndlp->vport;
6485
6486         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6487                 "node release:    did:x%x flg:x%x type:x%x",
6488                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
6489
6490         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6491                          "0279 %s: ndlp: x%px did %x refcnt:%d rpi:%x\n",
6492                          __func__, ndlp, ndlp->nlp_DID,
6493                          kref_read(&ndlp->kref), ndlp->nlp_rpi);
6494
6495         /* remove ndlp from action. */
6496         lpfc_cancel_retry_delay_tmo(vport, ndlp);
6497         lpfc_cleanup_node(vport, ndlp);
6498
6499         /* Not all ELS transactions have registered the RPI with the port.
6500          * In these cases the rpi usage is temporary and the node is
6501          * released when the WQE is completed.  Catch this case to free the
6502          * RPI to the pool.  Because this node is in the release path, a lock
6503          * is unnecessary.  All references are gone and the node has been
6504          * dequeued.
6505          */
6506         if (ndlp->nlp_flag & NLP_RELEASE_RPI) {
6507                 if (ndlp->nlp_rpi != LPFC_RPI_ALLOC_ERROR &&
6508                     !(ndlp->nlp_flag & (NLP_RPI_REGISTERED | NLP_UNREG_INP))) {
6509                         lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi);
6510                         ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
6511                 }
6512         }
6513
6514         /* The node is not freed back to memory, it is released to a pool so
6515          * the node fields need to be cleaned up.
6516          */
6517         ndlp->vport = NULL;
6518         ndlp->nlp_state = NLP_STE_FREED_NODE;
6519         ndlp->nlp_flag = 0;
6520         ndlp->fc4_xpt_flags = 0;
6521
6522         /* free ndlp memory for final ndlp release */
6523         kfree(ndlp->lat_data);
6524         if (ndlp->phba->sli_rev == LPFC_SLI_REV4)
6525                 mempool_free(ndlp->active_rrqs_xri_bitmap,
6526                                 ndlp->phba->active_rrq_pool);
6527         mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
6528 }
6529
6530 /* This routine bumps the reference count for a ndlp structure to ensure
6531  * that one discovery thread won't free a ndlp while another discovery thread
6532  * is using it.
6533  */
6534 struct lpfc_nodelist *
6535 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
6536 {
6537         unsigned long flags;
6538
6539         if (ndlp) {
6540                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6541                         "node get:        did:x%x flg:x%x refcnt:x%x",
6542                         ndlp->nlp_DID, ndlp->nlp_flag,
6543                         kref_read(&ndlp->kref));
6544
6545                 /* The check of ndlp usage to prevent incrementing the
6546                  * ndlp reference count that is in the process of being
6547                  * released.
6548                  */
6549                 spin_lock_irqsave(&ndlp->lock, flags);
6550                 if (!kref_get_unless_zero(&ndlp->kref)) {
6551                         spin_unlock_irqrestore(&ndlp->lock, flags);
6552                         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
6553                                 "0276 %s: ndlp:x%px refcnt:%d\n",
6554                                 __func__, (void *)ndlp, kref_read(&ndlp->kref));
6555                         return NULL;
6556                 }
6557                 spin_unlock_irqrestore(&ndlp->lock, flags);
6558         } else {
6559                 WARN_ONCE(!ndlp, "**** %s, get ref on NULL ndlp!", __func__);
6560         }
6561
6562         return ndlp;
6563 }
6564
6565 /* This routine decrements the reference count for a ndlp structure. If the
6566  * count goes to 0, this indicates the associated nodelist should be freed.
6567  */
6568 int
6569 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
6570 {
6571         if (ndlp) {
6572                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6573                                 "node put:        did:x%x flg:x%x refcnt:x%x",
6574                                 ndlp->nlp_DID, ndlp->nlp_flag,
6575                                 kref_read(&ndlp->kref));
6576         } else {
6577                 WARN_ONCE(!ndlp, "**** %s, put ref on NULL ndlp!", __func__);
6578         }
6579
6580         return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0;
6581 }
6582
6583 /* This routine free's the specified nodelist if it is not in use
6584  * by any other discovery thread. This routine returns 1 if the
6585  * ndlp has been freed. A return value of 0 indicates the ndlp is
6586  * not yet been released.
6587  */
6588 int
6589 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
6590 {
6591         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6592                 "node not used:   did:x%x flg:x%x refcnt:x%x",
6593                 ndlp->nlp_DID, ndlp->nlp_flag,
6594                 kref_read(&ndlp->kref));
6595
6596         if (kref_read(&ndlp->kref) == 1)
6597                 if (lpfc_nlp_put(ndlp))
6598                         return 1;
6599         return 0;
6600 }
6601
6602 /**
6603  * lpfc_fcf_inuse - Check if FCF can be unregistered.
6604  * @phba: Pointer to hba context object.
6605  *
6606  * This function iterate through all FC nodes associated
6607  * will all vports to check if there is any node with
6608  * fc_rports associated with it. If there is an fc_rport
6609  * associated with the node, then the node is either in
6610  * discovered state or its devloss_timer is pending.
6611  */
6612 static int
6613 lpfc_fcf_inuse(struct lpfc_hba *phba)
6614 {
6615         struct lpfc_vport **vports;
6616         int i, ret = 0;
6617         struct lpfc_nodelist *ndlp;
6618         struct Scsi_Host  *shost;
6619
6620         vports = lpfc_create_vport_work_array(phba);
6621
6622         /* If driver cannot allocate memory, indicate fcf is in use */
6623         if (!vports)
6624                 return 1;
6625
6626         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6627                 shost = lpfc_shost_from_vport(vports[i]);
6628                 spin_lock_irq(shost->host_lock);
6629                 /*
6630                  * IF the CVL_RCVD bit is not set then we have sent the
6631                  * flogi.
6632                  * If dev_loss fires while we are waiting we do not want to
6633                  * unreg the fcf.
6634                  */
6635                 if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) {
6636                         spin_unlock_irq(shost->host_lock);
6637                         ret =  1;
6638                         goto out;
6639                 }
6640                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
6641                         if (ndlp->rport &&
6642                           (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
6643                                 ret = 1;
6644                                 spin_unlock_irq(shost->host_lock);
6645                                 goto out;
6646                         } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
6647                                 ret = 1;
6648                                 lpfc_printf_log(phba, KERN_INFO,
6649                                                 LOG_NODE | LOG_DISCOVERY,
6650                                                 "2624 RPI %x DID %x flag %x "
6651                                                 "still logged in\n",
6652                                                 ndlp->nlp_rpi, ndlp->nlp_DID,
6653                                                 ndlp->nlp_flag);
6654                         }
6655                 }
6656                 spin_unlock_irq(shost->host_lock);
6657         }
6658 out:
6659         lpfc_destroy_vport_work_array(phba, vports);
6660         return ret;
6661 }
6662
6663 /**
6664  * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
6665  * @phba: Pointer to hba context object.
6666  * @mboxq: Pointer to mailbox object.
6667  *
6668  * This function frees memory associated with the mailbox command.
6669  */
6670 void
6671 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6672 {
6673         struct lpfc_vport *vport = mboxq->vport;
6674         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6675
6676         if (mboxq->u.mb.mbxStatus) {
6677                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6678                                 "2555 UNREG_VFI mbxStatus error x%x "
6679                                 "HBA state x%x\n",
6680                                 mboxq->u.mb.mbxStatus, vport->port_state);
6681         }
6682         spin_lock_irq(shost->host_lock);
6683         phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
6684         spin_unlock_irq(shost->host_lock);
6685         mempool_free(mboxq, phba->mbox_mem_pool);
6686         return;
6687 }
6688
6689 /**
6690  * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
6691  * @phba: Pointer to hba context object.
6692  * @mboxq: Pointer to mailbox object.
6693  *
6694  * This function frees memory associated with the mailbox command.
6695  */
6696 static void
6697 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6698 {
6699         struct lpfc_vport *vport = mboxq->vport;
6700
6701         if (mboxq->u.mb.mbxStatus) {
6702                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6703                                 "2550 UNREG_FCFI mbxStatus error x%x "
6704                                 "HBA state x%x\n",
6705                                 mboxq->u.mb.mbxStatus, vport->port_state);
6706         }
6707         mempool_free(mboxq, phba->mbox_mem_pool);
6708         return;
6709 }
6710
6711 /**
6712  * lpfc_unregister_fcf_prep - Unregister fcf record preparation
6713  * @phba: Pointer to hba context object.
6714  *
6715  * This function prepare the HBA for unregistering the currently registered
6716  * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
6717  * VFIs.
6718  */
6719 int
6720 lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
6721 {
6722         struct lpfc_vport **vports;
6723         struct lpfc_nodelist *ndlp;
6724         struct Scsi_Host *shost;
6725         int i = 0, rc;
6726
6727         /* Unregister RPIs */
6728         if (lpfc_fcf_inuse(phba))
6729                 lpfc_unreg_hba_rpis(phba);
6730
6731         /* At this point, all discovery is aborted */
6732         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
6733
6734         /* Unregister VPIs */
6735         vports = lpfc_create_vport_work_array(phba);
6736         if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
6737                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6738                         /* Stop FLOGI/FDISC retries */
6739                         ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
6740                         if (ndlp)
6741                                 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
6742                         lpfc_cleanup_pending_mbox(vports[i]);
6743                         if (phba->sli_rev == LPFC_SLI_REV4)
6744                                 lpfc_sli4_unreg_all_rpis(vports[i]);
6745                         lpfc_mbx_unreg_vpi(vports[i]);
6746                         shost = lpfc_shost_from_vport(vports[i]);
6747                         spin_lock_irq(shost->host_lock);
6748                         vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6749                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
6750                         spin_unlock_irq(shost->host_lock);
6751                 }
6752         lpfc_destroy_vport_work_array(phba, vports);
6753         if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) {
6754                 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
6755                 if (ndlp)
6756                         lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
6757                 lpfc_cleanup_pending_mbox(phba->pport);
6758                 if (phba->sli_rev == LPFC_SLI_REV4)
6759                         lpfc_sli4_unreg_all_rpis(phba->pport);
6760                 lpfc_mbx_unreg_vpi(phba->pport);
6761                 shost = lpfc_shost_from_vport(phba->pport);
6762                 spin_lock_irq(shost->host_lock);
6763                 phba->pport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6764                 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED;
6765                 spin_unlock_irq(shost->host_lock);
6766         }
6767
6768         /* Cleanup any outstanding ELS commands */
6769         lpfc_els_flush_all_cmd(phba);
6770
6771         /* Unregister the physical port VFI */
6772         rc = lpfc_issue_unreg_vfi(phba->pport);
6773         return rc;
6774 }
6775
6776 /**
6777  * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
6778  * @phba: Pointer to hba context object.
6779  *
6780  * This function issues synchronous unregister FCF mailbox command to HBA to
6781  * unregister the currently registered FCF record. The driver does not reset
6782  * the driver FCF usage state flags.
6783  *
6784  * Return 0 if successfully issued, none-zero otherwise.
6785  */
6786 int
6787 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
6788 {
6789         LPFC_MBOXQ_t *mbox;
6790         int rc;
6791
6792         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6793         if (!mbox) {
6794                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6795                                 "2551 UNREG_FCFI mbox allocation failed"
6796                                 "HBA state x%x\n", phba->pport->port_state);
6797                 return -ENOMEM;
6798         }
6799         lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
6800         mbox->vport = phba->pport;
6801         mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
6802         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
6803
6804         if (rc == MBX_NOT_FINISHED) {
6805                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6806                                 "2552 Unregister FCFI command failed rc x%x "
6807                                 "HBA state x%x\n",
6808                                 rc, phba->pport->port_state);
6809                 return -EINVAL;
6810         }
6811         return 0;
6812 }
6813
6814 /**
6815  * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
6816  * @phba: Pointer to hba context object.
6817  *
6818  * This function unregisters the currently reigstered FCF. This function
6819  * also tries to find another FCF for discovery by rescan the HBA FCF table.
6820  */
6821 void
6822 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
6823 {
6824         int rc;
6825
6826         /* Preparation for unregistering fcf */
6827         rc = lpfc_unregister_fcf_prep(phba);
6828         if (rc) {
6829                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6830                                 "2748 Failed to prepare for unregistering "
6831                                 "HBA's FCF record: rc=%d\n", rc);
6832                 return;
6833         }
6834
6835         /* Now, unregister FCF record and reset HBA FCF state */
6836         rc = lpfc_sli4_unregister_fcf(phba);
6837         if (rc)
6838                 return;
6839         /* Reset HBA FCF states after successful unregister FCF */
6840         phba->fcf.fcf_flag = 0;
6841         phba->fcf.current_rec.flag = 0;
6842
6843         /*
6844          * If driver is not unloading, check if there is any other
6845          * FCF record that can be used for discovery.
6846          */
6847         if ((phba->pport->load_flag & FC_UNLOADING) ||
6848             (phba->link_state < LPFC_LINK_UP))
6849                 return;
6850
6851         /* This is considered as the initial FCF discovery scan */
6852         spin_lock_irq(&phba->hbalock);
6853         phba->fcf.fcf_flag |= FCF_INIT_DISC;
6854         spin_unlock_irq(&phba->hbalock);
6855
6856         /* Reset FCF roundrobin bmask for new discovery */
6857         lpfc_sli4_clear_fcf_rr_bmask(phba);
6858
6859         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
6860
6861         if (rc) {
6862                 spin_lock_irq(&phba->hbalock);
6863                 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
6864                 spin_unlock_irq(&phba->hbalock);
6865                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6866                                 "2553 lpfc_unregister_unused_fcf failed "
6867                                 "to read FCF record HBA state x%x\n",
6868                                 phba->pport->port_state);
6869         }
6870 }
6871
6872 /**
6873  * lpfc_unregister_fcf - Unregister the currently registered fcf record
6874  * @phba: Pointer to hba context object.
6875  *
6876  * This function just unregisters the currently reigstered FCF. It does not
6877  * try to find another FCF for discovery.
6878  */
6879 void
6880 lpfc_unregister_fcf(struct lpfc_hba *phba)
6881 {
6882         int rc;
6883
6884         /* Preparation for unregistering fcf */
6885         rc = lpfc_unregister_fcf_prep(phba);
6886         if (rc) {
6887                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6888                                 "2749 Failed to prepare for unregistering "
6889                                 "HBA's FCF record: rc=%d\n", rc);
6890                 return;
6891         }
6892
6893         /* Now, unregister FCF record and reset HBA FCF state */
6894         rc = lpfc_sli4_unregister_fcf(phba);
6895         if (rc)
6896                 return;
6897         /* Set proper HBA FCF states after successful unregister FCF */
6898         spin_lock_irq(&phba->hbalock);
6899         phba->fcf.fcf_flag &= ~FCF_REGISTERED;
6900         spin_unlock_irq(&phba->hbalock);
6901 }
6902
6903 /**
6904  * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
6905  * @phba: Pointer to hba context object.
6906  *
6907  * This function check if there are any connected remote port for the FCF and
6908  * if all the devices are disconnected, this function unregister FCFI.
6909  * This function also tries to use another FCF for discovery.
6910  */
6911 void
6912 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
6913 {
6914         /*
6915          * If HBA is not running in FIP mode, if HBA does not support
6916          * FCoE, if FCF discovery is ongoing, or if FCF has not been
6917          * registered, do nothing.
6918          */
6919         spin_lock_irq(&phba->hbalock);
6920         if (!(phba->hba_flag & HBA_FCOE_MODE) ||
6921             !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
6922             !(phba->hba_flag & HBA_FIP_SUPPORT) ||
6923             (phba->fcf.fcf_flag & FCF_DISCOVERY) ||
6924             (phba->pport->port_state == LPFC_FLOGI)) {
6925                 spin_unlock_irq(&phba->hbalock);
6926                 return;
6927         }
6928         spin_unlock_irq(&phba->hbalock);
6929
6930         if (lpfc_fcf_inuse(phba))
6931                 return;
6932
6933         lpfc_unregister_fcf_rescan(phba);
6934 }
6935
6936 /**
6937  * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
6938  * @phba: Pointer to hba context object.
6939  * @buff: Buffer containing the FCF connection table as in the config
6940  *         region.
6941  * This function create driver data structure for the FCF connection
6942  * record table read from config region 23.
6943  */
6944 static void
6945 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
6946         uint8_t *buff)
6947 {
6948         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
6949         struct lpfc_fcf_conn_hdr *conn_hdr;
6950         struct lpfc_fcf_conn_rec *conn_rec;
6951         uint32_t record_count;
6952         int i;
6953
6954         /* Free the current connect table */
6955         list_for_each_entry_safe(conn_entry, next_conn_entry,
6956                 &phba->fcf_conn_rec_list, list) {
6957                 list_del_init(&conn_entry->list);
6958                 kfree(conn_entry);
6959         }
6960
6961         conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
6962         record_count = conn_hdr->length * sizeof(uint32_t)/
6963                 sizeof(struct lpfc_fcf_conn_rec);
6964
6965         conn_rec = (struct lpfc_fcf_conn_rec *)
6966                 (buff + sizeof(struct lpfc_fcf_conn_hdr));
6967
6968         for (i = 0; i < record_count; i++) {
6969                 if (!(conn_rec[i].flags & FCFCNCT_VALID))
6970                         continue;
6971                 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
6972                         GFP_KERNEL);
6973                 if (!conn_entry) {
6974                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6975                                         "2566 Failed to allocate connection"
6976                                         " table entry\n");
6977                         return;
6978                 }
6979
6980                 memcpy(&conn_entry->conn_rec, &conn_rec[i],
6981                         sizeof(struct lpfc_fcf_conn_rec));
6982                 list_add_tail(&conn_entry->list,
6983                         &phba->fcf_conn_rec_list);
6984         }
6985
6986         if (!list_empty(&phba->fcf_conn_rec_list)) {
6987                 i = 0;
6988                 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list,
6989                                     list) {
6990                         conn_rec = &conn_entry->conn_rec;
6991                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6992                                         "3345 FCF connection list rec[%02d]: "
6993                                         "flags:x%04x, vtag:x%04x, "
6994                                         "fabric_name:x%02x:%02x:%02x:%02x:"
6995                                         "%02x:%02x:%02x:%02x, "
6996                                         "switch_name:x%02x:%02x:%02x:%02x:"
6997                                         "%02x:%02x:%02x:%02x\n", i++,
6998                                         conn_rec->flags, conn_rec->vlan_tag,
6999                                         conn_rec->fabric_name[0],
7000                                         conn_rec->fabric_name[1],
7001                                         conn_rec->fabric_name[2],
7002                                         conn_rec->fabric_name[3],
7003                                         conn_rec->fabric_name[4],
7004                                         conn_rec->fabric_name[5],
7005                                         conn_rec->fabric_name[6],
7006                                         conn_rec->fabric_name[7],
7007                                         conn_rec->switch_name[0],
7008                                         conn_rec->switch_name[1],
7009                                         conn_rec->switch_name[2],
7010                                         conn_rec->switch_name[3],
7011                                         conn_rec->switch_name[4],
7012                                         conn_rec->switch_name[5],
7013                                         conn_rec->switch_name[6],
7014                                         conn_rec->switch_name[7]);
7015                 }
7016         }
7017 }
7018
7019 /**
7020  * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
7021  * @phba: Pointer to hba context object.
7022  * @buff: Buffer containing the FCoE parameter data structure.
7023  *
7024  *  This function update driver data structure with config
7025  *  parameters read from config region 23.
7026  */
7027 static void
7028 lpfc_read_fcoe_param(struct lpfc_hba *phba,
7029                         uint8_t *buff)
7030 {
7031         struct lpfc_fip_param_hdr *fcoe_param_hdr;
7032         struct lpfc_fcoe_params *fcoe_param;
7033
7034         fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
7035                 buff;
7036         fcoe_param = (struct lpfc_fcoe_params *)
7037                 (buff + sizeof(struct lpfc_fip_param_hdr));
7038
7039         if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
7040                 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
7041                 return;
7042
7043         if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
7044                 phba->valid_vlan = 1;
7045                 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
7046                         0xFFF;
7047         }
7048
7049         phba->fc_map[0] = fcoe_param->fc_map[0];
7050         phba->fc_map[1] = fcoe_param->fc_map[1];
7051         phba->fc_map[2] = fcoe_param->fc_map[2];
7052         return;
7053 }
7054
7055 /**
7056  * lpfc_get_rec_conf23 - Get a record type in config region data.
7057  * @buff: Buffer containing config region 23 data.
7058  * @size: Size of the data buffer.
7059  * @rec_type: Record type to be searched.
7060  *
7061  * This function searches config region data to find the beginning
7062  * of the record specified by record_type. If record found, this
7063  * function return pointer to the record else return NULL.
7064  */
7065 static uint8_t *
7066 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
7067 {
7068         uint32_t offset = 0, rec_length;
7069
7070         if ((buff[0] == LPFC_REGION23_LAST_REC) ||
7071                 (size < sizeof(uint32_t)))
7072                 return NULL;
7073
7074         rec_length = buff[offset + 1];
7075
7076         /*
7077          * One TLV record has one word header and number of data words
7078          * specified in the rec_length field of the record header.
7079          */
7080         while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
7081                 <= size) {
7082                 if (buff[offset] == rec_type)
7083                         return &buff[offset];
7084
7085                 if (buff[offset] == LPFC_REGION23_LAST_REC)
7086                         return NULL;
7087
7088                 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
7089                 rec_length = buff[offset + 1];
7090         }
7091         return NULL;
7092 }
7093
7094 /**
7095  * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
7096  * @phba: Pointer to lpfc_hba data structure.
7097  * @buff: Buffer containing config region 23 data.
7098  * @size: Size of the data buffer.
7099  *
7100  * This function parses the FCoE config parameters in config region 23 and
7101  * populate driver data structure with the parameters.
7102  */
7103 void
7104 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
7105                 uint8_t *buff,
7106                 uint32_t size)
7107 {
7108         uint32_t offset = 0;
7109         uint8_t *rec_ptr;
7110
7111         /*
7112          * If data size is less than 2 words signature and version cannot be
7113          * verified.
7114          */
7115         if (size < 2*sizeof(uint32_t))
7116                 return;
7117
7118         /* Check the region signature first */
7119         if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
7120                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7121                         "2567 Config region 23 has bad signature\n");
7122                 return;
7123         }
7124
7125         offset += 4;
7126
7127         /* Check the data structure version */
7128         if (buff[offset] != LPFC_REGION23_VERSION) {
7129                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7130                                 "2568 Config region 23 has bad version\n");
7131                 return;
7132         }
7133         offset += 4;
7134
7135         /* Read FCoE param record */
7136         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
7137                         size - offset, FCOE_PARAM_TYPE);
7138         if (rec_ptr)
7139                 lpfc_read_fcoe_param(phba, rec_ptr);
7140
7141         /* Read FCF connection table */
7142         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
7143                 size - offset, FCOE_CONN_TBL_TYPE);
7144         if (rec_ptr)
7145                 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
7146
7147 }