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) 2017-2022 Broadcom. All Rights Reserved. The term *
   5  * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.     *
   6  * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
   7  * EMULEX and SLI are trademarks of Emulex.                        *
   8  * www.broadcom.com                                                *
   9  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
  10  *                                                                 *
  11  * This program is free software; you can redistribute it and/or   *
  12  * modify it under the terms of version 2 of the GNU General       *
  13  * Public License as published by the Free Software Foundation.    *
  14  * This program is distributed in the hope that it will be useful. *
  15  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  16  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  17  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  18  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  19  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  20  * more details, a copy of which can be found in the file COPYING  *
  21  * included with this package.                                     *
  22  *******************************************************************/
  23
  24 #include <linux/blkdev.h>
  25 #include <linux/delay.h>
  26 #include <linux/slab.h>
  27 #include <linux/pci.h>
  28 #include <linux/kthread.h>
  29 #include <linux/interrupt.h>
  30 #include <linux/lockdep.h>
  31 #include <linux/utsname.h>
  32
  33 #include <scsi/scsi.h>
  34 #include <scsi/scsi_device.h>
  35 #include <scsi/scsi_host.h>
  36 #include <scsi/scsi_transport_fc.h>
  37 #include <scsi/fc/fc_fs.h>
  38
  39 #include "lpfc_hw4.h"
  40 #include "lpfc_hw.h"
  41 #include "lpfc_nl.h"
  42 #include "lpfc_disc.h"
  43 #include "lpfc_sli.h"
  44 #include "lpfc_sli4.h"
  45 #include "lpfc.h"
  46 #include "lpfc_scsi.h"
  47 #include "lpfc_nvme.h"
  48 #include "lpfc_logmsg.h"
  49 #include "lpfc_crtn.h"
  50 #include "lpfc_vport.h"
  51 #include "lpfc_debugfs.h"
  52
  53 /* AlpaArray for assignment of scsid for scan-down and bind_method */
  54 static uint8_t lpfcAlpaArray[] = {
  55         0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
  56         0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
  57         0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
  58         0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
  59         0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
  60         0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
  61         0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
  62         0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
  63         0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
  64         0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
  65         0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
  66         0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
  67         0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
  68 };
  69
  70 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
  71 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
  72 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
  73 static int lpfc_fcf_inuse(struct lpfc_hba *);
  74 static void lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *, LPFC_MBOXQ_t *);
  75 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba);
  76 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba);
  77
  78 static int
  79 lpfc_valid_xpt_node(struct lpfc_nodelist *ndlp)
  80 {
  81         if (ndlp->nlp_fc4_type ||
  82             ndlp->nlp_type & NLP_FABRIC)
  83                 return 1;
  84         return 0;
  85 }
  86 /* The source of a terminate rport I/O is either a dev_loss_tmo
  87  * event or a call to fc_remove_host.  While the rport should be
  88  * valid during these downcalls, the transport can call twice
  89  * in a single event.  This routine provides somoe protection
  90  * as the NDLP isn't really free, just released to the pool.
  91  */
  92 static int
  93 lpfc_rport_invalid(struct fc_rport *rport)
  94 {
  95         struct lpfc_rport_data *rdata;
  96         struct lpfc_nodelist *ndlp;
  97
  98         if (!rport) {
  99                 pr_err("**** %s: NULL rport, exit.\n", __func__);
 100                 return -EINVAL;
 101         }
 102
 103         rdata = rport->dd_data;
 104         if (!rdata) {
 105                 pr_err("**** %s: NULL dd_data on rport x%px SID x%x\n",
 106                        __func__, rport, rport->scsi_target_id);
 107                 return -EINVAL;
 108         }
 109
 110         ndlp = rdata->pnode;
 111         if (!rdata->pnode) {
 112                 pr_info("**** %s: NULL ndlp on rport x%px SID x%x\n",
 113                         __func__, rport, rport->scsi_target_id);
 114                 return -EINVAL;
 115         }
 116
 117         if (!ndlp->vport) {
 118                 pr_err("**** %s: Null vport on ndlp x%px, DID x%x rport x%px "
 119                        "SID x%x\n", __func__, ndlp, ndlp->nlp_DID, rport,
 120                        rport->scsi_target_id);
 121                 return -EINVAL;
 122         }
 123         return 0;
 124 }
 125
 126 void
 127 lpfc_terminate_rport_io(struct fc_rport *rport)
 128 {
 129         struct lpfc_rport_data *rdata;
 130         struct lpfc_nodelist *ndlp;
 131         struct lpfc_vport *vport;
 132
 133         if (lpfc_rport_invalid(rport))
 134                 return;
 135
 136         rdata = rport->dd_data;
 137         ndlp = rdata->pnode;
 138         vport = ndlp->vport;
 139         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 140                               "rport terminate: sid:x%x did:x%x flg:x%x",
 141                               ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 142
 143         if (ndlp->nlp_sid != NLP_NO_SID)
 144                 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 145 }
 146
 147 /*
 148  * This function will be called when dev_loss_tmo fire.
 149  */
 150 void
 151 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
 152 {
 153         struct lpfc_nodelist *ndlp;
 154         struct lpfc_vport *vport;
 155         struct lpfc_hba   *phba;
 156         struct lpfc_work_evt *evtp;
 157         unsigned long iflags;
 158
 159         ndlp = ((struct lpfc_rport_data *)rport->dd_data)->pnode;
 160         if (!ndlp)
 161                 return;
 162
 163         vport = ndlp->vport;
 164         phba  = vport->phba;
 165
 166         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 167                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
 168                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 169
 170         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 171                          "3181 dev_loss_callbk x%06x, rport x%px flg x%x "
 172                          "load_flag x%x refcnt %d state %d xpt x%x\n",
 173                          ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag,
 174                          vport->load_flag, kref_read(&ndlp->kref),
 175                          ndlp->nlp_state, ndlp->fc4_xpt_flags);
 176
 177         /* Don't schedule a worker thread event if the vport is going down.
 178          * The teardown process cleans up the node via lpfc_drop_node.
 179          */
 180         if (vport->load_flag & FC_UNLOADING) {
 181                 ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL;
 182                 ndlp->rport = NULL;
 183
 184                 ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD;
 185                 /* clear the NLP_XPT_REGD if the node is not registered
 186                  * with nvme-fc
 187                  */
 188                 if (ndlp->fc4_xpt_flags == NLP_XPT_REGD)
 189                         ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD;
 190
 191                 /* Remove the node reference from remote_port_add now.
 192                  * The driver will not call remote_port_delete.
 193                  */
 194                 lpfc_nlp_put(ndlp);
 195                 return;
 196         }
 197
 198         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 199                 return;
 200
 201         if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn))
 202                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 203                                  "6789 rport name %llx != node port name %llx",
 204                                  rport->port_name,
 205                                  wwn_to_u64(ndlp->nlp_portname.u.wwn));
 206
 207         evtp = &ndlp->dev_loss_evt;
 208
 209         if (!list_empty(&evtp->evt_listp)) {
 210                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 211                                  "6790 rport name %llx dev_loss_evt pending\n",
 212                                  rport->port_name);
 213                 return;
 214         }
 215
 216         spin_lock_irqsave(&ndlp->lock, iflags);
 217         ndlp->nlp_flag |= NLP_IN_DEV_LOSS;
 218
 219         /* If there is a PLOGI in progress, and we are in a
 220          * NLP_NPR_2B_DISC state, don't turn off the flag.
 221          */
 222         if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE)
 223                 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 224
 225         /*
 226          * The backend does not expect any more calls associated with this
 227          * rport. Remove the association between rport and ndlp.
 228          */
 229         ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD;
 230         ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL;
 231         ndlp->rport = NULL;
 232         spin_unlock_irqrestore(&ndlp->lock, iflags);
 233
 234         if (phba->worker_thread) {
 235                 /* We need to hold the node by incrementing the reference
 236                  * count until this queued work is done
 237                  */
 238                 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
 239
 240                 spin_lock_irqsave(&phba->hbalock, iflags);
 241                 if (evtp->evt_arg1) {
 242                         evtp->evt = LPFC_EVT_DEV_LOSS;
 243                         list_add_tail(&evtp->evt_listp, &phba->work_list);
 244                         lpfc_worker_wake_up(phba);
 245                 }
 246                 spin_unlock_irqrestore(&phba->hbalock, iflags);
 247         } else {
 248                 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 249                                  "3188 worker thread is stopped %s x%06x, "
 250                                  " rport x%px flg x%x load_flag x%x refcnt "
 251                                  "%d\n", __func__, ndlp->nlp_DID,
 252                                  ndlp->rport, ndlp->nlp_flag,
 253                                  vport->load_flag, kref_read(&ndlp->kref));
 254                 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) {
 255                         spin_lock_irqsave(&ndlp->lock, iflags);
 256                         /* Node is in dev loss.  No further transaction. */
 257                         ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
 258                         spin_unlock_irqrestore(&ndlp->lock, iflags);
 259                         lpfc_disc_state_machine(vport, ndlp, NULL,
 260                                                 NLP_EVT_DEVICE_RM);
 261                 }
 262
 263         }
 264
 265         return;
 266 }
 267
 268 /**
 269  * lpfc_check_inactive_vmid_one - VMID inactivity checker for a vport
 270  * @vport: Pointer to vport context object.
 271  *
 272  * This function checks for idle VMID entries related to a particular vport. If
 273  * found unused/idle, free them accordingly.
 274  **/
 275 static void lpfc_check_inactive_vmid_one(struct lpfc_vport *vport)
 276 {
 277         u16 keep;
 278         u32 difftime = 0, r, bucket;
 279         u64 *lta;
 280         int cpu;
 281         struct lpfc_vmid *vmp;
 282
 283         write_lock(&vport->vmid_lock);
 284
 285         if (!vport->cur_vmid_cnt)
 286                 goto out;
 287
 288         /* iterate through the table */
 289         hash_for_each(vport->hash_table, bucket, vmp, hnode) {
 290                 keep = 0;
 291                 if (vmp->flag & LPFC_VMID_REGISTERED) {
 292                         /* check if the particular VMID is in use */
 293                         /* for all available per cpu variable */
 294                         for_each_possible_cpu(cpu) {
 295                                 /* if last access time is less than timeout */
 296                                 lta = per_cpu_ptr(vmp->last_io_time, cpu);
 297                                 if (!lta)
 298                                         continue;
 299                                 difftime = (jiffies) - (*lta);
 300                                 if ((vport->vmid_inactivity_timeout *
 301                                      JIFFIES_PER_HR) > difftime) {
 302                                         keep = 1;
 303                                         break;
 304                                 }
 305                         }
 306
 307                         /* if none of the cpus have been used by the vm, */
 308                         /*  remove the entry if already registered */
 309                         if (!keep) {
 310                                 /* mark the entry for deregistration */
 311                                 vmp->flag = LPFC_VMID_DE_REGISTER;
 312                                 write_unlock(&vport->vmid_lock);
 313                                 if (vport->vmid_priority_tagging)
 314                                         r = lpfc_vmid_uvem(vport, vmp, false);
 315                                 else
 316                                         r = lpfc_vmid_cmd(vport,
 317                                                           SLI_CTAS_DAPP_IDENT,
 318                                                           vmp);
 319
 320                                 /* decrement number of active vms and mark */
 321                                 /* entry in slot as free */
 322                                 write_lock(&vport->vmid_lock);
 323                                 if (!r) {
 324                                         struct lpfc_vmid *ht = vmp;
 325
 326                                         vport->cur_vmid_cnt--;
 327                                         ht->flag = LPFC_VMID_SLOT_FREE;
 328                                         free_percpu(ht->last_io_time);
 329                                         ht->last_io_time = NULL;
 330                                         hash_del(&ht->hnode);
 331                                 }
 332                         }
 333                 }
 334         }
 335  out:
 336         write_unlock(&vport->vmid_lock);
 337 }
 338
 339 /**
 340  * lpfc_check_inactive_vmid - VMID inactivity checker
 341  * @phba: Pointer to hba context object.
 342  *
 343  * This function is called from the worker thread to determine if an entry in
 344  * the VMID table can be released since there was no I/O activity seen from that
 345  * particular VM for the specified time. When this happens, the entry in the
 346  * table is released and also the resources on the switch cleared.
 347  **/
 348
 349 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba)
 350 {
 351         struct lpfc_vport *vport;
 352         struct lpfc_vport **vports;
 353         int i;
 354
 355         vports = lpfc_create_vport_work_array(phba);
 356         if (!vports)
 357                 return;
 358
 359         for (i = 0; i <= phba->max_vports; i++) {
 360                 if ((!vports[i]) && (i == 0))
 361                         vport = phba->pport;
 362                 else
 363                         vport = vports[i];
 364                 if (!vport)
 365                         break;
 366
 367                 lpfc_check_inactive_vmid_one(vport);
 368         }
 369         lpfc_destroy_vport_work_array(phba, vports);
 370 }
 371
 372 /**
 373  * lpfc_check_nlp_post_devloss - Check to restore ndlp refcnt after devloss
 374  * @vport: Pointer to vport object.
 375  * @ndlp: Pointer to remote node object.
 376  *
 377  * If NLP_IN_RECOV_POST_DEV_LOSS flag was set due to outstanding recovery of
 378  * node during dev_loss_tmo processing, then this function restores the nlp_put
 379  * kref decrement from lpfc_dev_loss_tmo_handler.
 380  **/
 381 void
 382 lpfc_check_nlp_post_devloss(struct lpfc_vport *vport,
 383                             struct lpfc_nodelist *ndlp)
 384 {
 385         unsigned long iflags;
 386
 387         spin_lock_irqsave(&ndlp->lock, iflags);
 388         if (ndlp->save_flags & NLP_IN_RECOV_POST_DEV_LOSS) {
 389                 ndlp->save_flags &= ~NLP_IN_RECOV_POST_DEV_LOSS;
 390                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 391                 lpfc_nlp_get(ndlp);
 392                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY | LOG_NODE,
 393                                  "8438 Devloss timeout reversed on DID x%x "
 394                                  "refcnt %d ndlp %p flag x%x "
 395                                  "port_state = x%x\n",
 396                                  ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp,
 397                                  ndlp->nlp_flag, vport->port_state);
 398                 spin_lock_irqsave(&ndlp->lock, iflags);
 399         }
 400         spin_unlock_irqrestore(&ndlp->lock, iflags);
 401 }
 402
 403 /**
 404  * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler
 405  * @ndlp: Pointer to remote node object.
 406  *
 407  * This function is called from the worker thread when devloss timeout timer
 408  * expires. For SLI4 host, this routine shall return 1 when at lease one
 409  * remote node, including this @ndlp, is still in use of FCF; otherwise, this
 410  * routine shall return 0 when there is no remote node is still in use of FCF
 411  * when devloss timeout happened to this @ndlp.
 412  **/
 413 static int
 414 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 415 {
 416         struct lpfc_vport *vport;
 417         struct lpfc_hba   *phba;
 418         uint8_t *name;
 419         int warn_on = 0;
 420         int fcf_inuse = 0;
 421         bool recovering = false;
 422         struct fc_vport *fc_vport = NULL;
 423         unsigned long iflags;
 424
 425         vport = ndlp->vport;
 426         name = (uint8_t *)&ndlp->nlp_portname;
 427         phba = vport->phba;
 428
 429         spin_lock_irqsave(&ndlp->lock, iflags);
 430         ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
 431         spin_unlock_irqrestore(&ndlp->lock, iflags);
 432
 433         if (phba->sli_rev == LPFC_SLI_REV4)
 434                 fcf_inuse = lpfc_fcf_inuse(phba);
 435
 436         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 437                               "rport devlosstmo:did:x%x type:x%x id:x%x",
 438                               ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_sid);
 439
 440         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 441                          "3182 %s x%06x, nflag x%x xflags x%x refcnt %d\n",
 442                          __func__, ndlp->nlp_DID, ndlp->nlp_flag,
 443                          ndlp->fc4_xpt_flags, kref_read(&ndlp->kref));
 444
 445         /* If the driver is recovering the rport, ignore devloss. */
 446         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
 447                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 448                                  "0284 Devloss timeout Ignored on "
 449                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 450                                  "NPort x%x\n",
 451                                  *name, *(name+1), *(name+2), *(name+3),
 452                                  *(name+4), *(name+5), *(name+6), *(name+7),
 453                                  ndlp->nlp_DID);
 454                 return fcf_inuse;
 455         }
 456
 457         /* Fabric nodes are done. */
 458         if (ndlp->nlp_type & NLP_FABRIC) {
 459                 spin_lock_irqsave(&ndlp->lock, iflags);
 460                 /* In massive vport configuration settings, it's possible
 461                  * dev_loss_tmo fired during node recovery.  So, check if
 462                  * fabric nodes are in discovery states outstanding.
 463                  */
 464                 switch (ndlp->nlp_DID) {
 465                 case Fabric_DID:
 466                         fc_vport = vport->fc_vport;
 467                         if (fc_vport &&
 468                             fc_vport->vport_state == FC_VPORT_INITIALIZING)
 469                                 recovering = true;
 470                         break;
 471                 case Fabric_Cntl_DID:
 472                         if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
 473                                 recovering = true;
 474                         break;
 475                 case FDMI_DID:
 476                         fallthrough;
 477                 case NameServer_DID:
 478                         if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
 479                             ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE)
 480                                 recovering = true;
 481                         break;
 482                 }
 483                 spin_unlock_irqrestore(&ndlp->lock, iflags);
 484
 485                 /* Mark an NLP_IN_RECOV_POST_DEV_LOSS flag to know if reversing
 486                  * the following lpfc_nlp_put is necessary after fabric node is
 487                  * recovered.
 488                  */
 489                 if (recovering) {
 490                         lpfc_printf_vlog(vport, KERN_INFO,
 491                                          LOG_DISCOVERY | LOG_NODE,
 492                                          "8436 Devloss timeout marked on "
 493                                          "DID x%x refcnt %d ndlp %p "
 494                                          "flag x%x port_state = x%x\n",
 495                                          ndlp->nlp_DID, kref_read(&ndlp->kref),
 496                                          ndlp, ndlp->nlp_flag,
 497                                          vport->port_state);
 498                         spin_lock_irqsave(&ndlp->lock, iflags);
 499                         ndlp->save_flags |= NLP_IN_RECOV_POST_DEV_LOSS;
 500                         spin_unlock_irqrestore(&ndlp->lock, iflags);
 501                 } else if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
 502                         /* Fabric node fully recovered before this dev_loss_tmo
 503                          * queue work is processed.  Thus, ignore the
 504                          * dev_loss_tmo event.
 505                          */
 506                         lpfc_printf_vlog(vport, KERN_INFO,
 507                                          LOG_DISCOVERY | LOG_NODE,
 508                                          "8437 Devloss timeout ignored on "
 509                                          "DID x%x refcnt %d ndlp %p "
 510                                          "flag x%x port_state = x%x\n",
 511                                          ndlp->nlp_DID, kref_read(&ndlp->kref),
 512                                          ndlp, ndlp->nlp_flag,
 513                                          vport->port_state);
 514                         return fcf_inuse;
 515                 }
 516
 517                 lpfc_nlp_put(ndlp);
 518                 return fcf_inuse;
 519         }
 520
 521         if (ndlp->nlp_sid != NLP_NO_SID) {
 522                 warn_on = 1;
 523                 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 524         }
 525
 526         if (warn_on) {
 527                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 528                                  "0203 Devloss timeout on "
 529                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 530                                  "NPort x%06x Data: x%x x%x x%x refcnt %d\n",
 531                                  *name, *(name+1), *(name+2), *(name+3),
 532                                  *(name+4), *(name+5), *(name+6), *(name+7),
 533                                  ndlp->nlp_DID, ndlp->nlp_flag,
 534                                  ndlp->nlp_state, ndlp->nlp_rpi,
 535                                  kref_read(&ndlp->kref));
 536         } else {
 537                 lpfc_printf_vlog(vport, KERN_INFO, LOG_TRACE_EVENT,
 538                                  "0204 Devloss timeout on "
 539                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 540                                  "NPort x%06x Data: x%x x%x x%x\n",
 541                                  *name, *(name+1), *(name+2), *(name+3),
 542                                  *(name+4), *(name+5), *(name+6), *(name+7),
 543                                  ndlp->nlp_DID, ndlp->nlp_flag,
 544                                  ndlp->nlp_state, ndlp->nlp_rpi);
 545         }
 546
 547         /* If we are devloss, but we are in the process of rediscovering the
 548          * ndlp, don't issue a NLP_EVT_DEVICE_RM event.
 549          */
 550         if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
 551             ndlp->nlp_state <= NLP_STE_PRLI_ISSUE) {
 552                 return fcf_inuse;
 553         }
 554
 555         if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD))
 556                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 557
 558         return fcf_inuse;
 559 }
 560
 561 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba)
 562 {
 563         struct lpfc_vport *vport;
 564         struct lpfc_vport **vports;
 565         int i;
 566
 567         vports = lpfc_create_vport_work_array(phba);
 568         if (!vports)
 569                 return;
 570
 571         for (i = 0; i <= phba->max_vports; i++) {
 572                 if ((!vports[i]) && (i == 0))
 573                         vport = phba->pport;
 574                 else
 575                         vport = vports[i];
 576                 if (!vport)
 577                         break;
 578
 579                 if (vport->vmid_flag & LPFC_VMID_ISSUE_QFPA) {
 580                         if (!lpfc_issue_els_qfpa(vport))
 581                                 vport->vmid_flag &= ~LPFC_VMID_ISSUE_QFPA;
 582                 }
 583         }
 584         lpfc_destroy_vport_work_array(phba, vports);
 585 }
 586
 587 /**
 588  * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler
 589  * @phba: Pointer to hba context object.
 590  * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler.
 591  * @nlp_did: remote node identifer with devloss timeout.
 592  *
 593  * This function is called from the worker thread after invoking devloss
 594  * timeout handler and releasing the reference count for the ndlp with
 595  * which the devloss timeout was handled for SLI4 host. For the devloss
 596  * timeout of the last remote node which had been in use of FCF, when this
 597  * routine is invoked, it shall be guaranteed that none of the remote are
 598  * in-use of FCF. When devloss timeout to the last remote using the FCF,
 599  * if the FIP engine is neither in FCF table scan process nor roundrobin
 600  * failover process, the in-use FCF shall be unregistered. If the FIP
 601  * engine is in FCF discovery process, the devloss timeout state shall
 602  * be set for either the FCF table scan process or roundrobin failover
 603  * process to unregister the in-use FCF.
 604  **/
 605 static void
 606 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse,
 607                                     uint32_t nlp_did)
 608 {
 609         /* If devloss timeout happened to a remote node when FCF had no
 610          * longer been in-use, do nothing.
 611          */
 612         if (!fcf_inuse)
 613                 return;
 614
 615         if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) {
 616                 spin_lock_irq(&phba->hbalock);
 617                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
 618                         if (phba->hba_flag & HBA_DEVLOSS_TMO) {
 619                                 spin_unlock_irq(&phba->hbalock);
 620                                 return;
 621                         }
 622                         phba->hba_flag |= HBA_DEVLOSS_TMO;
 623                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 624                                         "2847 Last remote node (x%x) using "
 625                                         "FCF devloss tmo\n", nlp_did);
 626                 }
 627                 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) {
 628                         spin_unlock_irq(&phba->hbalock);
 629                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 630                                         "2868 Devloss tmo to FCF rediscovery "
 631                                         "in progress\n");
 632                         return;
 633                 }
 634                 if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) {
 635                         spin_unlock_irq(&phba->hbalock);
 636                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 637                                         "2869 Devloss tmo to idle FIP engine, "
 638                                         "unreg in-use FCF and rescan.\n");
 639                         /* Unregister in-use FCF and rescan */
 640                         lpfc_unregister_fcf_rescan(phba);
 641                         return;
 642                 }
 643                 spin_unlock_irq(&phba->hbalock);
 644                 if (phba->hba_flag & FCF_TS_INPROG)
 645                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 646                                         "2870 FCF table scan in progress\n");
 647                 if (phba->hba_flag & FCF_RR_INPROG)
 648                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 649                                         "2871 FLOGI roundrobin FCF failover "
 650                                         "in progress\n");
 651         }
 652         lpfc_unregister_unused_fcf(phba);
 653 }
 654
 655 /**
 656  * lpfc_alloc_fast_evt - Allocates data structure for posting event
 657  * @phba: Pointer to hba context object.
 658  *
 659  * This function is called from the functions which need to post
 660  * events from interrupt context. This function allocates data
 661  * structure required for posting event. It also keeps track of
 662  * number of events pending and prevent event storm when there are
 663  * too many events.
 664  **/
 665 struct lpfc_fast_path_event *
 666 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
 667         struct lpfc_fast_path_event *ret;
 668
 669         /* If there are lot of fast event do not exhaust memory due to this */
 670         if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
 671                 return NULL;
 672
 673         ret = kzalloc(sizeof(struct lpfc_fast_path_event),
 674                         GFP_ATOMIC);
 675         if (ret) {
 676                 atomic_inc(&phba->fast_event_count);
 677                 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
 678                 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
 679         }
 680         return ret;
 681 }
 682
 683 /**
 684  * lpfc_free_fast_evt - Frees event data structure
 685  * @phba: Pointer to hba context object.
 686  * @evt:  Event object which need to be freed.
 687  *
 688  * This function frees the data structure required for posting
 689  * events.
 690  **/
 691 void
 692 lpfc_free_fast_evt(struct lpfc_hba *phba,
 693                 struct lpfc_fast_path_event *evt) {
 694
 695         atomic_dec(&phba->fast_event_count);
 696         kfree(evt);
 697 }
 698
 699 /**
 700  * lpfc_send_fastpath_evt - Posts events generated from fast path
 701  * @phba: Pointer to hba context object.
 702  * @evtp: Event data structure.
 703  *
 704  * This function is called from worker thread, when the interrupt
 705  * context need to post an event. This function posts the event
 706  * to fc transport netlink interface.
 707  **/
 708 static void
 709 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
 710                 struct lpfc_work_evt *evtp)
 711 {
 712         unsigned long evt_category, evt_sub_category;
 713         struct lpfc_fast_path_event *fast_evt_data;
 714         char *evt_data;
 715         uint32_t evt_data_size;
 716         struct Scsi_Host *shost;
 717
 718         fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
 719                 work_evt);
 720
 721         evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
 722         evt_sub_category = (unsigned long) fast_evt_data->un.
 723                         fabric_evt.subcategory;
 724         shost = lpfc_shost_from_vport(fast_evt_data->vport);
 725         if (evt_category == FC_REG_FABRIC_EVENT) {
 726                 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
 727                         evt_data = (char *) &fast_evt_data->un.read_check_error;
 728                         evt_data_size = sizeof(fast_evt_data->un.
 729                                 read_check_error);
 730                 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
 731                         (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
 732                         evt_data = (char *) &fast_evt_data->un.fabric_evt;
 733                         evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
 734                 } else {
 735                         lpfc_free_fast_evt(phba, fast_evt_data);
 736                         return;
 737                 }
 738         } else if (evt_category == FC_REG_SCSI_EVENT) {
 739                 switch (evt_sub_category) {
 740                 case LPFC_EVENT_QFULL:
 741                 case LPFC_EVENT_DEVBSY:
 742                         evt_data = (char *) &fast_evt_data->un.scsi_evt;
 743                         evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
 744                         break;
 745                 case LPFC_EVENT_CHECK_COND:
 746                         evt_data = (char *) &fast_evt_data->un.check_cond_evt;
 747                         evt_data_size =  sizeof(fast_evt_data->un.
 748                                 check_cond_evt);
 749                         break;
 750                 case LPFC_EVENT_VARQUEDEPTH:
 751                         evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
 752                         evt_data_size = sizeof(fast_evt_data->un.
 753                                 queue_depth_evt);
 754                         break;
 755                 default:
 756                         lpfc_free_fast_evt(phba, fast_evt_data);
 757                         return;
 758                 }
 759         } else {
 760                 lpfc_free_fast_evt(phba, fast_evt_data);
 761                 return;
 762         }
 763
 764         if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
 765                 fc_host_post_vendor_event(shost,
 766                         fc_get_event_number(),
 767                         evt_data_size,
 768                         evt_data,
 769                         LPFC_NL_VENDOR_ID);
 770
 771         lpfc_free_fast_evt(phba, fast_evt_data);
 772         return;
 773 }
 774
 775 static void
 776 lpfc_work_list_done(struct lpfc_hba *phba)
 777 {
 778         struct lpfc_work_evt  *evtp = NULL;
 779         struct lpfc_nodelist  *ndlp;
 780         int free_evt;
 781         int fcf_inuse;
 782         uint32_t nlp_did;
 783         bool hba_pci_err;
 784
 785         spin_lock_irq(&phba->hbalock);
 786         while (!list_empty(&phba->work_list)) {
 787                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 788                                  evt_listp);
 789                 spin_unlock_irq(&phba->hbalock);
 790                 hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags);
 791                 free_evt = 1;
 792                 switch (evtp->evt) {
 793                 case LPFC_EVT_ELS_RETRY:
 794                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 795                         if (!hba_pci_err) {
 796                                 lpfc_els_retry_delay_handler(ndlp);
 797                                 free_evt = 0; /* evt is part of ndlp */
 798                         }
 799                         /* decrement the node reference count held
 800                          * for this queued work
 801                          */
 802                         lpfc_nlp_put(ndlp);
 803                         break;
 804                 case LPFC_EVT_DEV_LOSS:
 805                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 806                         fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp);
 807                         free_evt = 0;
 808                         /* decrement the node reference count held for
 809                          * this queued work
 810                          */
 811                         nlp_did = ndlp->nlp_DID;
 812                         lpfc_nlp_put(ndlp);
 813                         if (phba->sli_rev == LPFC_SLI_REV4)
 814                                 lpfc_sli4_post_dev_loss_tmo_handler(phba,
 815                                                                     fcf_inuse,
 816                                                                     nlp_did);
 817                         break;
 818                 case LPFC_EVT_RECOVER_PORT:
 819                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 820                         if (!hba_pci_err) {
 821                                 lpfc_sli_abts_recover_port(ndlp->vport, ndlp);
 822                                 free_evt = 0;
 823                         }
 824                         /* decrement the node reference count held for
 825                          * this queued work
 826                          */
 827                         lpfc_nlp_put(ndlp);
 828                         break;
 829                 case LPFC_EVT_ONLINE:
 830                         if (phba->link_state < LPFC_LINK_DOWN)
 831                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 832                         else
 833                                 *(int *) (evtp->evt_arg1) = 0;
 834                         complete((struct completion *)(evtp->evt_arg2));
 835                         break;
 836                 case LPFC_EVT_OFFLINE_PREP:
 837                         if (phba->link_state >= LPFC_LINK_DOWN)
 838                                 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
 839                         *(int *)(evtp->evt_arg1) = 0;
 840                         complete((struct completion *)(evtp->evt_arg2));
 841                         break;
 842                 case LPFC_EVT_OFFLINE:
 843                         lpfc_offline(phba);
 844                         lpfc_sli_brdrestart(phba);
 845                         *(int *)(evtp->evt_arg1) =
 846                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 847                         lpfc_unblock_mgmt_io(phba);
 848                         complete((struct completion *)(evtp->evt_arg2));
 849                         break;
 850                 case LPFC_EVT_WARM_START:
 851                         lpfc_offline(phba);
 852                         lpfc_reset_barrier(phba);
 853                         lpfc_sli_brdreset(phba);
 854                         lpfc_hba_down_post(phba);
 855                         *(int *)(evtp->evt_arg1) =
 856                                 lpfc_sli_brdready(phba, HS_MBRDY);
 857                         lpfc_unblock_mgmt_io(phba);
 858                         complete((struct completion *)(evtp->evt_arg2));
 859                         break;
 860                 case LPFC_EVT_KILL:
 861                         lpfc_offline(phba);
 862                         *(int *)(evtp->evt_arg1)
 863                                 = (phba->pport->stopped)
 864                                         ? 0 : lpfc_sli_brdkill(phba);
 865                         lpfc_unblock_mgmt_io(phba);
 866                         complete((struct completion *)(evtp->evt_arg2));
 867                         break;
 868                 case LPFC_EVT_FASTPATH_MGMT_EVT:
 869                         lpfc_send_fastpath_evt(phba, evtp);
 870                         free_evt = 0;
 871                         break;
 872                 case LPFC_EVT_RESET_HBA:
 873                         if (!(phba->pport->load_flag & FC_UNLOADING))
 874                                 lpfc_reset_hba(phba);
 875                         break;
 876                 }
 877                 if (free_evt)
 878                         kfree(evtp);
 879                 spin_lock_irq(&phba->hbalock);
 880         }
 881         spin_unlock_irq(&phba->hbalock);
 882
 883 }
 884
 885 static void
 886 lpfc_work_done(struct lpfc_hba *phba)
 887 {
 888         struct lpfc_sli_ring *pring;
 889         uint32_t ha_copy, status, control, work_port_events;
 890         struct lpfc_vport **vports;
 891         struct lpfc_vport *vport;
 892         int i;
 893         bool hba_pci_err;
 894
 895         hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags);
 896         spin_lock_irq(&phba->hbalock);
 897         ha_copy = phba->work_ha;
 898         phba->work_ha = 0;
 899         spin_unlock_irq(&phba->hbalock);
 900         if (hba_pci_err)
 901                 ha_copy = 0;
 902
 903         /* First, try to post the next mailbox command to SLI4 device */
 904         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC && !hba_pci_err)
 905                 lpfc_sli4_post_async_mbox(phba);
 906
 907         if (ha_copy & HA_ERATT) {
 908                 /* Handle the error attention event */
 909                 lpfc_handle_eratt(phba);
 910
 911                 if (phba->fw_dump_cmpl) {
 912                         complete(phba->fw_dump_cmpl);
 913                         phba->fw_dump_cmpl = NULL;
 914                 }
 915         }
 916
 917         if (ha_copy & HA_MBATT)
 918                 lpfc_sli_handle_mb_event(phba);
 919
 920         if (ha_copy & HA_LATT)
 921                 lpfc_handle_latt(phba);
 922
 923         /* Handle VMID Events */
 924         if (lpfc_is_vmid_enabled(phba) && !hba_pci_err) {
 925                 if (phba->pport->work_port_events &
 926                     WORKER_CHECK_VMID_ISSUE_QFPA) {
 927                         lpfc_check_vmid_qfpa_issue(phba);
 928                         phba->pport->work_port_events &=
 929                                 ~WORKER_CHECK_VMID_ISSUE_QFPA;
 930                 }
 931                 if (phba->pport->work_port_events &
 932                     WORKER_CHECK_INACTIVE_VMID) {
 933                         lpfc_check_inactive_vmid(phba);
 934                         phba->pport->work_port_events &=
 935                             ~WORKER_CHECK_INACTIVE_VMID;
 936                 }
 937         }
 938
 939         /* Process SLI4 events */
 940         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
 941                 if (phba->hba_flag & HBA_RRQ_ACTIVE)
 942                         lpfc_handle_rrq_active(phba);
 943                 if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
 944                         lpfc_sli4_els_xri_abort_event_proc(phba);
 945                 if (phba->hba_flag & ASYNC_EVENT)
 946                         lpfc_sli4_async_event_proc(phba);
 947                 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
 948                         spin_lock_irq(&phba->hbalock);
 949                         phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
 950                         spin_unlock_irq(&phba->hbalock);
 951                         lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
 952                 }
 953                 if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
 954                         lpfc_sli4_fcf_redisc_event_proc(phba);
 955         }
 956
 957         vports = lpfc_create_vport_work_array(phba);
 958         if (vports != NULL)
 959                 for (i = 0; i <= phba->max_vports; i++) {
 960                         /*
 961                          * We could have no vports in array if unloading, so if
 962                          * this happens then just use the pport
 963                          */
 964                         if (vports[i] == NULL && i == 0)
 965                                 vport = phba->pport;
 966                         else
 967                                 vport = vports[i];
 968                         if (vport == NULL)
 969                                 break;
 970                         spin_lock_irq(&vport->work_port_lock);
 971                         work_port_events = vport->work_port_events;
 972                         vport->work_port_events &= ~work_port_events;
 973                         spin_unlock_irq(&vport->work_port_lock);
 974                         if (hba_pci_err)
 975                                 continue;
 976                         if (work_port_events & WORKER_DISC_TMO)
 977                                 lpfc_disc_timeout_handler(vport);
 978                         if (work_port_events & WORKER_ELS_TMO)
 979                                 lpfc_els_timeout_handler(vport);
 980                         if (work_port_events & WORKER_HB_TMO)
 981                                 lpfc_hb_timeout_handler(phba);
 982                         if (work_port_events & WORKER_MBOX_TMO)
 983                                 lpfc_mbox_timeout_handler(phba);
 984                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
 985                                 lpfc_unblock_fabric_iocbs(phba);
 986                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
 987                                 lpfc_ramp_down_queue_handler(phba);
 988                         if (work_port_events & WORKER_DELAYED_DISC_TMO)
 989                                 lpfc_delayed_disc_timeout_handler(vport);
 990                 }
 991         lpfc_destroy_vport_work_array(phba, vports);
 992
 993         pring = lpfc_phba_elsring(phba);
 994         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
 995         status >>= (4*LPFC_ELS_RING);
 996         if (pring && (status & HA_RXMASK ||
 997                       pring->flag & LPFC_DEFERRED_RING_EVENT ||
 998                       phba->hba_flag & HBA_SP_QUEUE_EVT)) {
 999                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
1000                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
1001                         /* Preserve legacy behavior. */
1002                         if (!(phba->hba_flag & HBA_SP_QUEUE_EVT))
1003                                 set_bit(LPFC_DATA_READY, &phba->data_flags);
1004                 } else {
1005                         /* Driver could have abort request completed in queue
1006                          * when link goes down.  Allow for this transition.
1007                          */
1008                         if (phba->link_state >= LPFC_LINK_DOWN ||
1009                             phba->link_flag & LS_MDS_LOOPBACK) {
1010                                 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
1011                                 lpfc_sli_handle_slow_ring_event(phba, pring,
1012                                                                 (status &
1013                                                                 HA_RXMASK));
1014                         }
1015                 }
1016                 if (phba->sli_rev == LPFC_SLI_REV4)
1017                         lpfc_drain_txq(phba);
1018                 /*
1019                  * Turn on Ring interrupts
1020                  */
1021                 if (phba->sli_rev <= LPFC_SLI_REV3) {
1022                         spin_lock_irq(&phba->hbalock);
1023                         control = readl(phba->HCregaddr);
1024                         if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
1025                                 lpfc_debugfs_slow_ring_trc(phba,
1026                                         "WRK Enable ring: cntl:x%x hacopy:x%x",
1027                                         control, ha_copy, 0);
1028
1029                                 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
1030                                 writel(control, phba->HCregaddr);
1031                                 readl(phba->HCregaddr); /* flush */
1032                         } else {
1033                                 lpfc_debugfs_slow_ring_trc(phba,
1034                                         "WRK Ring ok:     cntl:x%x hacopy:x%x",
1035                                         control, ha_copy, 0);
1036                         }
1037                         spin_unlock_irq(&phba->hbalock);
1038                 }
1039         }
1040         lpfc_work_list_done(phba);
1041 }
1042
1043 int
1044 lpfc_do_work(void *p)
1045 {
1046         struct lpfc_hba *phba = p;
1047         int rc;
1048
1049         set_user_nice(current, MIN_NICE);
1050         current->flags |= PF_NOFREEZE;
1051         phba->data_flags = 0;
1052
1053         while (!kthread_should_stop()) {
1054                 /* wait and check worker queue activities */
1055                 rc = wait_event_interruptible(phba->work_waitq,
1056                                         (test_and_clear_bit(LPFC_DATA_READY,
1057                                                             &phba->data_flags)
1058                                          || kthread_should_stop()));
1059                 /* Signal wakeup shall terminate the worker thread */
1060                 if (rc) {
1061                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1062                                         "0433 Wakeup on signal: rc=x%x\n", rc);
1063                         break;
1064                 }
1065
1066                 /* Attend pending lpfc data processing */
1067                 lpfc_work_done(phba);
1068         }
1069         phba->worker_thread = NULL;
1070         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1071                         "0432 Worker thread stopped.\n");
1072         return 0;
1073 }
1074
1075 /*
1076  * This is only called to handle FC worker events. Since this a rare
1077  * occurrence, we allocate a struct lpfc_work_evt structure here instead of
1078  * embedding it in the IOCB.
1079  */
1080 int
1081 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
1082                       uint32_t evt)
1083 {
1084         struct lpfc_work_evt  *evtp;
1085         unsigned long flags;
1086
1087         /*
1088          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
1089          * be queued to worker thread for processing
1090          */
1091         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
1092         if (!evtp)
1093                 return 0;
1094
1095         evtp->evt_arg1  = arg1;
1096         evtp->evt_arg2  = arg2;
1097         evtp->evt       = evt;
1098
1099         spin_lock_irqsave(&phba->hbalock, flags);
1100         list_add_tail(&evtp->evt_listp, &phba->work_list);
1101         spin_unlock_irqrestore(&phba->hbalock, flags);
1102
1103         lpfc_worker_wake_up(phba);
1104
1105         return 1;
1106 }
1107
1108 void
1109 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
1110 {
1111         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1112         struct lpfc_hba  *phba = vport->phba;
1113         struct lpfc_nodelist *ndlp, *next_ndlp;
1114
1115         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
1116                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
1117                         /* It's possible the FLOGI to the fabric node never
1118                          * successfully completed and never registered with the
1119                          * transport.  In this case there is no way to clean up
1120                          * the node.
1121                          */
1122                         if (ndlp->nlp_DID == Fabric_DID) {
1123                                 if (ndlp->nlp_prev_state ==
1124                                     NLP_STE_UNUSED_NODE &&
1125                                     !ndlp->fc4_xpt_flags)
1126                                         lpfc_nlp_put(ndlp);
1127                         }
1128                         continue;
1129                 }
1130
1131                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
1132                     ((vport->port_type == LPFC_NPIV_PORT) &&
1133                      ((ndlp->nlp_DID == NameServer_DID) ||
1134                       (ndlp->nlp_DID == FDMI_DID) ||
1135                       (ndlp->nlp_DID == Fabric_Cntl_DID))))
1136                         lpfc_unreg_rpi(vport, ndlp);
1137
1138                 /* Leave Fabric nodes alone on link down */
1139                 if ((phba->sli_rev < LPFC_SLI_REV4) &&
1140                     (!remove && ndlp->nlp_type & NLP_FABRIC))
1141                         continue;
1142
1143                 /* Notify transport of connectivity loss to trigger cleanup. */
1144                 if (phba->nvmet_support &&
1145                     ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
1146                         lpfc_nvmet_invalidate_host(phba, ndlp);
1147
1148                 lpfc_disc_state_machine(vport, ndlp, NULL,
1149                                         remove
1150                                         ? NLP_EVT_DEVICE_RM
1151                                         : NLP_EVT_DEVICE_RECOVERY);
1152         }
1153         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
1154                 if (phba->sli_rev == LPFC_SLI_REV4)
1155                         lpfc_sli4_unreg_all_rpis(vport);
1156                 lpfc_mbx_unreg_vpi(vport);
1157                 spin_lock_irq(shost->host_lock);
1158                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
1159                 spin_unlock_irq(shost->host_lock);
1160         }
1161 }
1162
1163 void
1164 lpfc_port_link_failure(struct lpfc_vport *vport)
1165 {
1166         lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
1167
1168         /* Cleanup any outstanding received buffers */
1169         lpfc_cleanup_rcv_buffers(vport);
1170
1171         /* Cleanup any outstanding RSCN activity */
1172         lpfc_els_flush_rscn(vport);
1173
1174         /* Cleanup any outstanding ELS commands */
1175         lpfc_els_flush_cmd(vport);
1176
1177         lpfc_cleanup_rpis(vport, 0);
1178
1179         /* Turn off discovery timer if its running */
1180         lpfc_can_disctmo(vport);
1181 }
1182
1183 void
1184 lpfc_linkdown_port(struct lpfc_vport *vport)
1185 {
1186         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1187
1188         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1189                 fc_host_post_event(shost, fc_get_event_number(),
1190                                    FCH_EVT_LINKDOWN, 0);
1191
1192         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1193                 "Link Down:       state:x%x rtry:x%x flg:x%x",
1194                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1195
1196         lpfc_port_link_failure(vport);
1197
1198         /* Stop delayed Nport discovery */
1199         spin_lock_irq(shost->host_lock);
1200         vport->fc_flag &= ~FC_DISC_DELAYED;
1201         spin_unlock_irq(shost->host_lock);
1202         del_timer_sync(&vport->delayed_disc_tmo);
1203 }
1204
1205 int
1206 lpfc_linkdown(struct lpfc_hba *phba)
1207 {
1208         struct lpfc_vport *vport = phba->pport;
1209         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1210         struct lpfc_vport **vports;
1211         LPFC_MBOXQ_t          *mb;
1212         int i;
1213         int offline;
1214
1215         if (phba->link_state == LPFC_LINK_DOWN)
1216                 return 0;
1217
1218         /* Block all SCSI stack I/Os */
1219         lpfc_scsi_dev_block(phba);
1220         offline = pci_channel_offline(phba->pcidev);
1221
1222         phba->defer_flogi_acc_flag = false;
1223
1224         spin_lock_irq(&phba->hbalock);
1225         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
1226         spin_unlock_irq(&phba->hbalock);
1227         if (phba->link_state > LPFC_LINK_DOWN) {
1228                 phba->link_state = LPFC_LINK_DOWN;
1229                 if (phba->sli4_hba.conf_trunk) {
1230                         phba->trunk_link.link0.state = 0;
1231                         phba->trunk_link.link1.state = 0;
1232                         phba->trunk_link.link2.state = 0;
1233                         phba->trunk_link.link3.state = 0;
1234                         phba->sli4_hba.link_state.logical_speed =
1235                                                 LPFC_LINK_SPEED_UNKNOWN;
1236                 }
1237                 spin_lock_irq(shost->host_lock);
1238                 phba->pport->fc_flag &= ~FC_LBIT;
1239                 spin_unlock_irq(shost->host_lock);
1240         }
1241         vports = lpfc_create_vport_work_array(phba);
1242         if (vports != NULL) {
1243                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
1244                         /* Issue a LINK DOWN event to all nodes */
1245                         lpfc_linkdown_port(vports[i]);
1246
1247                         vports[i]->fc_myDID = 0;
1248
1249                         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
1250                             (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1251                                 if (phba->nvmet_support)
1252                                         lpfc_nvmet_update_targetport(phba);
1253                                 else
1254                                         lpfc_nvme_update_localport(vports[i]);
1255                         }
1256                 }
1257         }
1258         lpfc_destroy_vport_work_array(phba, vports);
1259
1260         /* Clean up any SLI3 firmware default rpi's */
1261         if (phba->sli_rev > LPFC_SLI_REV3 || offline)
1262                 goto skip_unreg_did;
1263
1264         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1265         if (mb) {
1266                 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb);
1267                 mb->vport = vport;
1268                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1269                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
1270                     == MBX_NOT_FINISHED) {
1271                         mempool_free(mb, phba->mbox_mem_pool);
1272                 }
1273         }
1274
1275  skip_unreg_did:
1276         /* Setup myDID for link up if we are in pt2pt mode */
1277         if (phba->pport->fc_flag & FC_PT2PT) {
1278                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1279                 if (mb) {
1280                         lpfc_config_link(phba, mb);
1281                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1282                         mb->vport = vport;
1283                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
1284                             == MBX_NOT_FINISHED) {
1285                                 mempool_free(mb, phba->mbox_mem_pool);
1286                         }
1287                 }
1288                 spin_lock_irq(shost->host_lock);
1289                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
1290                 phba->pport->rcv_flogi_cnt = 0;
1291                 spin_unlock_irq(shost->host_lock);
1292         }
1293         return 0;
1294 }
1295
1296 static void
1297 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
1298 {
1299         struct lpfc_nodelist *ndlp;
1300
1301         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
1302                 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
1303
1304                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
1305                         continue;
1306                 if (ndlp->nlp_type & NLP_FABRIC) {
1307                         /* On Linkup its safe to clean up the ndlp
1308                          * from Fabric connections.
1309                          */
1310                         if (ndlp->nlp_DID != Fabric_DID)
1311                                 lpfc_unreg_rpi(vport, ndlp);
1312                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1313                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
1314                         /* Fail outstanding IO now since device is
1315                          * marked for PLOGI.
1316                          */
1317                         lpfc_unreg_rpi(vport, ndlp);
1318                 }
1319         }
1320 }
1321
1322 static void
1323 lpfc_linkup_port(struct lpfc_vport *vport)
1324 {
1325         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1326         struct lpfc_hba  *phba = vport->phba;
1327
1328         if ((vport->load_flag & FC_UNLOADING) != 0)
1329                 return;
1330
1331         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1332                 "Link Up:         top:x%x speed:x%x flg:x%x",
1333                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
1334
1335         /* If NPIV is not enabled, only bring the physical port up */
1336         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
1337                 (vport != phba->pport))
1338                 return;
1339
1340         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1341                 fc_host_post_event(shost, fc_get_event_number(),
1342                                    FCH_EVT_LINKUP, 0);
1343
1344         spin_lock_irq(shost->host_lock);
1345         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
1346                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
1347         vport->fc_flag |= FC_NDISC_ACTIVE;
1348         vport->fc_ns_retry = 0;
1349         spin_unlock_irq(shost->host_lock);
1350
1351         lpfc_linkup_cleanup_nodes(vport);
1352 }
1353
1354 static int
1355 lpfc_linkup(struct lpfc_hba *phba)
1356 {
1357         struct lpfc_vport **vports;
1358         int i;
1359         struct Scsi_Host  *shost = lpfc_shost_from_vport(phba->pport);
1360
1361         phba->link_state = LPFC_LINK_UP;
1362
1363         /* Unblock fabric iocbs if they are blocked */
1364         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
1365         del_timer_sync(&phba->fabric_block_timer);
1366
1367         vports = lpfc_create_vport_work_array(phba);
1368         if (vports != NULL)
1369                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
1370                         lpfc_linkup_port(vports[i]);
1371         lpfc_destroy_vport_work_array(phba, vports);
1372
1373         /* Clear the pport flogi counter in case the link down was
1374          * absorbed without an ACQE. No lock here - in worker thread
1375          * and discovery is synchronized.
1376          */
1377         spin_lock_irq(shost->host_lock);
1378         phba->pport->rcv_flogi_cnt = 0;
1379         spin_unlock_irq(shost->host_lock);
1380
1381         /* reinitialize initial FLOGI flag */
1382         phba->hba_flag &= ~(HBA_FLOGI_ISSUED);
1383         phba->defer_flogi_acc_flag = false;
1384
1385         return 0;
1386 }
1387
1388 /*
1389  * This routine handles processing a CLEAR_LA mailbox
1390  * command upon completion. It is setup in the LPFC_MBOXQ
1391  * as the completion routine when the command is
1392  * handed off to the SLI layer. SLI3 only.
1393  */
1394 static void
1395 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1396 {
1397         struct lpfc_vport *vport = pmb->vport;
1398         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1399         struct lpfc_sli   *psli = &phba->sli;
1400         MAILBOX_t *mb = &pmb->u.mb;
1401         uint32_t control;
1402
1403         /* Since we don't do discovery right now, turn these off here */
1404         psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1405         psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1406
1407         /* Check for error */
1408         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
1409                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
1410                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1411                                  "0320 CLEAR_LA mbxStatus error x%x hba "
1412                                  "state x%x\n",
1413                                  mb->mbxStatus, vport->port_state);
1414                 phba->link_state = LPFC_HBA_ERROR;
1415                 goto out;
1416         }
1417
1418         if (vport->port_type == LPFC_PHYSICAL_PORT)
1419                 phba->link_state = LPFC_HBA_READY;
1420
1421         spin_lock_irq(&phba->hbalock);
1422         psli->sli_flag |= LPFC_PROCESS_LA;
1423         control = readl(phba->HCregaddr);
1424         control |= HC_LAINT_ENA;
1425         writel(control, phba->HCregaddr);
1426         readl(phba->HCregaddr); /* flush */
1427         spin_unlock_irq(&phba->hbalock);
1428         mempool_free(pmb, phba->mbox_mem_pool);
1429         return;
1430
1431 out:
1432         /* Device Discovery completes */
1433         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1434                          "0225 Device Discovery completes\n");
1435         mempool_free(pmb, phba->mbox_mem_pool);
1436
1437         spin_lock_irq(shost->host_lock);
1438         vport->fc_flag &= ~FC_ABORT_DISCOVERY;
1439         spin_unlock_irq(shost->host_lock);
1440
1441         lpfc_can_disctmo(vport);
1442
1443         /* turn on Link Attention interrupts */
1444
1445         spin_lock_irq(&phba->hbalock);
1446         psli->sli_flag |= LPFC_PROCESS_LA;
1447         control = readl(phba->HCregaddr);
1448         control |= HC_LAINT_ENA;
1449         writel(control, phba->HCregaddr);
1450         readl(phba->HCregaddr); /* flush */
1451         spin_unlock_irq(&phba->hbalock);
1452
1453         return;
1454 }
1455
1456 void
1457 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1458 {
1459         struct lpfc_vport *vport = pmb->vport;
1460         LPFC_MBOXQ_t *sparam_mb;
1461         struct lpfc_dmabuf *sparam_mp;
1462         u16 status = pmb->u.mb.mbxStatus;
1463         int rc;
1464
1465         mempool_free(pmb, phba->mbox_mem_pool);
1466
1467         if (status)
1468                 goto out;
1469
1470         /* don't perform discovery for SLI4 loopback diagnostic test */
1471         if ((phba->sli_rev == LPFC_SLI_REV4) &&
1472             !(phba->hba_flag & HBA_FCOE_MODE) &&
1473             (phba->link_flag & LS_LOOPBACK_MODE))
1474                 return;
1475
1476         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
1477             vport->fc_flag & FC_PUBLIC_LOOP &&
1478             !(vport->fc_flag & FC_LBIT)) {
1479                         /* Need to wait for FAN - use discovery timer
1480                          * for timeout.  port_state is identically
1481                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
1482                          */
1483                         lpfc_set_disctmo(vport);
1484                         return;
1485         }
1486
1487         /* Start discovery by sending a FLOGI. port_state is identically
1488          * LPFC_FLOGI while waiting for FLOGI cmpl.
1489          */
1490         if (vport->port_state != LPFC_FLOGI) {
1491                 /* Issue MBX_READ_SPARAM to update CSPs before FLOGI if
1492                  * bb-credit recovery is in place.
1493                  */
1494                 if (phba->bbcredit_support && phba->cfg_enable_bbcr &&
1495                     !(phba->link_flag & LS_LOOPBACK_MODE)) {
1496                         sparam_mb = mempool_alloc(phba->mbox_mem_pool,
1497                                                   GFP_KERNEL);
1498                         if (!sparam_mb)
1499                                 goto sparam_out;
1500
1501                         rc = lpfc_read_sparam(phba, sparam_mb, 0);
1502                         if (rc) {
1503                                 mempool_free(sparam_mb, phba->mbox_mem_pool);
1504                                 goto sparam_out;
1505                         }
1506                         sparam_mb->vport = vport;
1507                         sparam_mb->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1508                         rc = lpfc_sli_issue_mbox(phba, sparam_mb, MBX_NOWAIT);
1509                         if (rc == MBX_NOT_FINISHED) {
1510                                 sparam_mp = (struct lpfc_dmabuf *)
1511                                                 sparam_mb->ctx_buf;
1512                                 lpfc_mbuf_free(phba, sparam_mp->virt,
1513                                                sparam_mp->phys);
1514                                 kfree(sparam_mp);
1515                                 sparam_mb->ctx_buf = NULL;
1516                                 mempool_free(sparam_mb, phba->mbox_mem_pool);
1517                                 goto sparam_out;
1518                         }
1519
1520                         phba->hba_flag |= HBA_DEFER_FLOGI;
1521                 }  else {
1522                         lpfc_initial_flogi(vport);
1523                 }
1524         } else {
1525                 if (vport->fc_flag & FC_PT2PT)
1526                         lpfc_disc_start(vport);
1527         }
1528         return;
1529
1530 out:
1531         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1532                          "0306 CONFIG_LINK mbxStatus error x%x HBA state x%x\n",
1533                          status, vport->port_state);
1534
1535 sparam_out:
1536         lpfc_linkdown(phba);
1537
1538         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1539                          "0200 CONFIG_LINK bad hba state x%x\n",
1540                          vport->port_state);
1541
1542         lpfc_issue_clear_la(phba, vport);
1543         return;
1544 }
1545
1546 /**
1547  * lpfc_sli4_clear_fcf_rr_bmask
1548  * @phba: pointer to the struct lpfc_hba for this port.
1549  * This fucnction resets the round robin bit mask and clears the
1550  * fcf priority list. The list deletions are done while holding the
1551  * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared
1552  * from the lpfc_fcf_pri record.
1553  **/
1554 void
1555 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba)
1556 {
1557         struct lpfc_fcf_pri *fcf_pri;
1558         struct lpfc_fcf_pri *next_fcf_pri;
1559         memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask));
1560         spin_lock_irq(&phba->hbalock);
1561         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
1562                                 &phba->fcf.fcf_pri_list, list) {
1563                 list_del_init(&fcf_pri->list);
1564                 fcf_pri->fcf_rec.flag = 0;
1565         }
1566         spin_unlock_irq(&phba->hbalock);
1567 }
1568 static void
1569 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1570 {
1571         struct lpfc_vport *vport = mboxq->vport;
1572
1573         if (mboxq->u.mb.mbxStatus) {
1574                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1575                                  "2017 REG_FCFI mbxStatus error x%x "
1576                                  "HBA state x%x\n", mboxq->u.mb.mbxStatus,
1577                                  vport->port_state);
1578                 goto fail_out;
1579         }
1580
1581         /* Start FCoE discovery by sending a FLOGI. */
1582         phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1583         /* Set the FCFI registered flag */
1584         spin_lock_irq(&phba->hbalock);
1585         phba->fcf.fcf_flag |= FCF_REGISTERED;
1586         spin_unlock_irq(&phba->hbalock);
1587
1588         /* If there is a pending FCoE event, restart FCF table scan. */
1589         if ((!(phba->hba_flag & FCF_RR_INPROG)) &&
1590                 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF))
1591                 goto fail_out;
1592
1593         /* Mark successful completion of FCF table scan */
1594         spin_lock_irq(&phba->hbalock);
1595         phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1596         phba->hba_flag &= ~FCF_TS_INPROG;
1597         if (vport->port_state != LPFC_FLOGI) {
1598                 phba->hba_flag |= FCF_RR_INPROG;
1599                 spin_unlock_irq(&phba->hbalock);
1600                 lpfc_issue_init_vfi(vport);
1601                 goto out;
1602         }
1603         spin_unlock_irq(&phba->hbalock);
1604         goto out;
1605
1606 fail_out:
1607         spin_lock_irq(&phba->hbalock);
1608         phba->hba_flag &= ~FCF_RR_INPROG;
1609         spin_unlock_irq(&phba->hbalock);
1610 out:
1611         mempool_free(mboxq, phba->mbox_mem_pool);
1612 }
1613
1614 /**
1615  * lpfc_fab_name_match - Check if the fcf fabric name match.
1616  * @fab_name: pointer to fabric name.
1617  * @new_fcf_record: pointer to fcf record.
1618  *
1619  * This routine compare the fcf record's fabric name with provided
1620  * fabric name. If the fabric name are identical this function
1621  * returns 1 else return 0.
1622  **/
1623 static uint32_t
1624 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1625 {
1626         if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1627                 return 0;
1628         if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1629                 return 0;
1630         if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1631                 return 0;
1632         if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1633                 return 0;
1634         if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1635                 return 0;
1636         if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1637                 return 0;
1638         if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1639                 return 0;
1640         if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1641                 return 0;
1642         return 1;
1643 }
1644
1645 /**
1646  * lpfc_sw_name_match - Check if the fcf switch name match.
1647  * @sw_name: pointer to switch name.
1648  * @new_fcf_record: pointer to fcf record.
1649  *
1650  * This routine compare the fcf record's switch name with provided
1651  * switch name. If the switch name are identical this function
1652  * returns 1 else return 0.
1653  **/
1654 static uint32_t
1655 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1656 {
1657         if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1658                 return 0;
1659         if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1660                 return 0;
1661         if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1662                 return 0;
1663         if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1664                 return 0;
1665         if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1666                 return 0;
1667         if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1668                 return 0;
1669         if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1670                 return 0;
1671         if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1672                 return 0;
1673         return 1;
1674 }
1675
1676 /**
1677  * lpfc_mac_addr_match - Check if the fcf mac address match.
1678  * @mac_addr: pointer to mac address.
1679  * @new_fcf_record: pointer to fcf record.
1680  *
1681  * This routine compare the fcf record's mac address with HBA's
1682  * FCF mac address. If the mac addresses are identical this function
1683  * returns 1 else return 0.
1684  **/
1685 static uint32_t
1686 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1687 {
1688         if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1689                 return 0;
1690         if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1691                 return 0;
1692         if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1693                 return 0;
1694         if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1695                 return 0;
1696         if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1697                 return 0;
1698         if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1699                 return 0;
1700         return 1;
1701 }
1702
1703 static bool
1704 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1705 {
1706         return (curr_vlan_id == new_vlan_id);
1707 }
1708
1709 /**
1710  * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record.
1711  * @phba: pointer to lpfc hba data structure.
1712  * @fcf_index: Index for the lpfc_fcf_record.
1713  * @new_fcf_record: pointer to hba fcf record.
1714  *
1715  * This routine updates the driver FCF priority record from the new HBA FCF
1716  * record. The hbalock is asserted held in the code path calling this
1717  * routine.
1718  **/
1719 static void
1720 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index,
1721                                  struct fcf_record *new_fcf_record
1722                                  )
1723 {
1724         struct lpfc_fcf_pri *fcf_pri;
1725
1726         fcf_pri = &phba->fcf.fcf_pri[fcf_index];
1727         fcf_pri->fcf_rec.fcf_index = fcf_index;
1728         /* FCF record priority */
1729         fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
1730
1731 }
1732
1733 /**
1734  * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1735  * @fcf_rec: pointer to driver fcf record.
1736  * @new_fcf_record: pointer to fcf record.
1737  *
1738  * This routine copies the FCF information from the FCF
1739  * record to lpfc_hba data structure.
1740  **/
1741 static void
1742 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1743                      struct fcf_record *new_fcf_record)
1744 {
1745         /* Fabric name */
1746         fcf_rec->fabric_name[0] =
1747                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1748         fcf_rec->fabric_name[1] =
1749                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1750         fcf_rec->fabric_name[2] =
1751                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1752         fcf_rec->fabric_name[3] =
1753                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1754         fcf_rec->fabric_name[4] =
1755                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1756         fcf_rec->fabric_name[5] =
1757                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1758         fcf_rec->fabric_name[6] =
1759                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1760         fcf_rec->fabric_name[7] =
1761                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1762         /* Mac address */
1763         fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1764         fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1765         fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1766         fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1767         fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1768         fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1769         /* FCF record index */
1770         fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1771         /* FCF record priority */
1772         fcf_rec->priority = new_fcf_record->fip_priority;
1773         /* Switch name */
1774         fcf_rec->switch_name[0] =
1775                 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1776         fcf_rec->switch_name[1] =
1777                 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1778         fcf_rec->switch_name[2] =
1779                 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1780         fcf_rec->switch_name[3] =
1781                 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1782         fcf_rec->switch_name[4] =
1783                 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1784         fcf_rec->switch_name[5] =
1785                 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1786         fcf_rec->switch_name[6] =
1787                 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1788         fcf_rec->switch_name[7] =
1789                 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1790 }
1791
1792 /**
1793  * __lpfc_update_fcf_record - Update driver fcf record
1794  * @phba: pointer to lpfc hba data structure.
1795  * @fcf_rec: pointer to driver fcf record.
1796  * @new_fcf_record: pointer to hba fcf record.
1797  * @addr_mode: address mode to be set to the driver fcf record.
1798  * @vlan_id: vlan tag to be set to the driver fcf record.
1799  * @flag: flag bits to be set to the driver fcf record.
1800  *
1801  * This routine updates the driver FCF record from the new HBA FCF record
1802  * together with the address mode, vlan_id, and other informations. This
1803  * routine is called with the hbalock held.
1804  **/
1805 static void
1806 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1807                        struct fcf_record *new_fcf_record, uint32_t addr_mode,
1808                        uint16_t vlan_id, uint32_t flag)
1809 {
1810         lockdep_assert_held(&phba->hbalock);
1811
1812         /* Copy the fields from the HBA's FCF record */
1813         lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1814         /* Update other fields of driver FCF record */
1815         fcf_rec->addr_mode = addr_mode;
1816         fcf_rec->vlan_id = vlan_id;
1817         fcf_rec->flag |= (flag | RECORD_VALID);
1818         __lpfc_update_fcf_record_pri(phba,
1819                 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record),
1820                                  new_fcf_record);
1821 }
1822
1823 /**
1824  * lpfc_register_fcf - Register the FCF with hba.
1825  * @phba: pointer to lpfc hba data structure.
1826  *
1827  * This routine issues a register fcfi mailbox command to register
1828  * the fcf with HBA.
1829  **/
1830 static void
1831 lpfc_register_fcf(struct lpfc_hba *phba)
1832 {
1833         LPFC_MBOXQ_t *fcf_mbxq;
1834         int rc;
1835
1836         spin_lock_irq(&phba->hbalock);
1837         /* If the FCF is not available do nothing. */
1838         if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1839                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1840                 spin_unlock_irq(&phba->hbalock);
1841                 return;
1842         }
1843
1844         /* The FCF is already registered, start discovery */
1845         if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1846                 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1847                 phba->hba_flag &= ~FCF_TS_INPROG;
1848                 if (phba->pport->port_state != LPFC_FLOGI &&
1849                     phba->pport->fc_flag & FC_FABRIC) {
1850                         phba->hba_flag |= FCF_RR_INPROG;
1851                         spin_unlock_irq(&phba->hbalock);
1852                         lpfc_initial_flogi(phba->pport);
1853                         return;
1854                 }
1855                 spin_unlock_irq(&phba->hbalock);
1856                 return;
1857         }
1858         spin_unlock_irq(&phba->hbalock);
1859
1860         fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1861         if (!fcf_mbxq) {
1862                 spin_lock_irq(&phba->hbalock);
1863                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1864                 spin_unlock_irq(&phba->hbalock);
1865                 return;
1866         }
1867
1868         lpfc_reg_fcfi(phba, fcf_mbxq);
1869         fcf_mbxq->vport = phba->pport;
1870         fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1871         rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1872         if (rc == MBX_NOT_FINISHED) {
1873                 spin_lock_irq(&phba->hbalock);
1874                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1875                 spin_unlock_irq(&phba->hbalock);
1876                 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1877         }
1878
1879         return;
1880 }
1881
1882 /**
1883  * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1884  * @phba: pointer to lpfc hba data structure.
1885  * @new_fcf_record: pointer to fcf record.
1886  * @boot_flag: Indicates if this record used by boot bios.
1887  * @addr_mode: The address mode to be used by this FCF
1888  * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1889  *
1890  * This routine compare the fcf record with connect list obtained from the
1891  * config region to decide if this FCF can be used for SAN discovery. It returns
1892  * 1 if this record can be used for SAN discovery else return zero. If this FCF
1893  * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1894  * is used by boot bios and addr_mode will indicate the addressing mode to be
1895  * used for this FCF when the function returns.
1896  * If the FCF record need to be used with a particular vlan id, the vlan is
1897  * set in the vlan_id on return of the function. If not VLAN tagging need to
1898  * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
1899  **/
1900 static int
1901 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1902                         struct fcf_record *new_fcf_record,
1903                         uint32_t *boot_flag, uint32_t *addr_mode,
1904                         uint16_t *vlan_id)
1905 {
1906         struct lpfc_fcf_conn_entry *conn_entry;
1907         int i, j, fcf_vlan_id = 0;
1908
1909         /* Find the lowest VLAN id in the FCF record */
1910         for (i = 0; i < 512; i++) {
1911                 if (new_fcf_record->vlan_bitmap[i]) {
1912                         fcf_vlan_id = i * 8;
1913                         j = 0;
1914                         while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1915                                 j++;
1916                                 fcf_vlan_id++;
1917                         }
1918                         break;
1919                 }
1920         }
1921
1922         /* FCF not valid/available or solicitation in progress */
1923         if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1924             !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) ||
1925             bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record))
1926                 return 0;
1927
1928         if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1929                 *boot_flag = 0;
1930                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1931                                 new_fcf_record);
1932                 if (phba->valid_vlan)
1933                         *vlan_id = phba->vlan_id;
1934                 else
1935                         *vlan_id = LPFC_FCOE_NULL_VID;
1936                 return 1;
1937         }
1938
1939         /*
1940          * If there are no FCF connection table entry, driver connect to all
1941          * FCFs.
1942          */
1943         if (list_empty(&phba->fcf_conn_rec_list)) {
1944                 *boot_flag = 0;
1945                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1946                         new_fcf_record);
1947
1948                 /*
1949                  * When there are no FCF connect entries, use driver's default
1950                  * addressing mode - FPMA.
1951                  */
1952                 if (*addr_mode & LPFC_FCF_FPMA)
1953                         *addr_mode = LPFC_FCF_FPMA;
1954
1955                 /* If FCF record report a vlan id use that vlan id */
1956                 if (fcf_vlan_id)
1957                         *vlan_id = fcf_vlan_id;
1958                 else
1959                         *vlan_id = LPFC_FCOE_NULL_VID;
1960                 return 1;
1961         }
1962
1963         list_for_each_entry(conn_entry,
1964                             &phba->fcf_conn_rec_list, list) {
1965                 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1966                         continue;
1967
1968                 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1969                         !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1970                                              new_fcf_record))
1971                         continue;
1972                 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
1973                         !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
1974                                             new_fcf_record))
1975                         continue;
1976                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1977                         /*
1978                          * If the vlan bit map does not have the bit set for the
1979                          * vlan id to be used, then it is not a match.
1980                          */
1981                         if (!(new_fcf_record->vlan_bitmap
1982                                 [conn_entry->conn_rec.vlan_tag / 8] &
1983                                 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
1984                                 continue;
1985                 }
1986
1987                 /*
1988                  * If connection record does not support any addressing mode,
1989                  * skip the FCF record.
1990                  */
1991                 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
1992                         & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
1993                         continue;
1994
1995                 /*
1996                  * Check if the connection record specifies a required
1997                  * addressing mode.
1998                  */
1999                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2000                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
2001
2002                         /*
2003                          * If SPMA required but FCF not support this continue.
2004                          */
2005                         if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2006                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
2007                                         new_fcf_record) & LPFC_FCF_SPMA))
2008                                 continue;
2009
2010                         /*
2011                          * If FPMA required but FCF not support this continue.
2012                          */
2013                         if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2014                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
2015                                 new_fcf_record) & LPFC_FCF_FPMA))
2016                                 continue;
2017                 }
2018
2019                 /*
2020                  * This fcf record matches filtering criteria.
2021                  */
2022                 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
2023                         *boot_flag = 1;
2024                 else
2025                         *boot_flag = 0;
2026
2027                 /*
2028                  * If user did not specify any addressing mode, or if the
2029                  * preferred addressing mode specified by user is not supported
2030                  * by FCF, allow fabric to pick the addressing mode.
2031                  */
2032                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
2033                                 new_fcf_record);
2034                 /*
2035                  * If the user specified a required address mode, assign that
2036                  * address mode
2037                  */
2038                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2039                         (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
2040                         *addr_mode = (conn_entry->conn_rec.flags &
2041                                 FCFCNCT_AM_SPMA) ?
2042                                 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
2043                 /*
2044                  * If the user specified a preferred address mode, use the
2045                  * addr mode only if FCF support the addr_mode.
2046                  */
2047                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2048                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
2049                         (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2050                         (*addr_mode & LPFC_FCF_SPMA))
2051                                 *addr_mode = LPFC_FCF_SPMA;
2052                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2053                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
2054                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2055                         (*addr_mode & LPFC_FCF_FPMA))
2056                                 *addr_mode = LPFC_FCF_FPMA;
2057
2058                 /* If matching connect list has a vlan id, use it */
2059                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
2060                         *vlan_id = conn_entry->conn_rec.vlan_tag;
2061                 /*
2062                  * If no vlan id is specified in connect list, use the vlan id
2063                  * in the FCF record
2064                  */
2065                 else if (fcf_vlan_id)
2066                         *vlan_id = fcf_vlan_id;
2067                 else
2068                         *vlan_id = LPFC_FCOE_NULL_VID;
2069
2070                 return 1;
2071         }
2072
2073         return 0;
2074 }
2075
2076 /**
2077  * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
2078  * @phba: pointer to lpfc hba data structure.
2079  * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
2080  *
2081  * This function check if there is any fcoe event pending while driver
2082  * scan FCF entries. If there is any pending event, it will restart the
2083  * FCF saning and return 1 else return 0.
2084  */
2085 int
2086 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
2087 {
2088         /*
2089          * If the Link is up and no FCoE events while in the
2090          * FCF discovery, no need to restart FCF discovery.
2091          */
2092         if ((phba->link_state  >= LPFC_LINK_UP) &&
2093             (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
2094                 return 0;
2095
2096         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2097                         "2768 Pending link or FCF event during current "
2098                         "handling of the previous event: link_state:x%x, "
2099                         "evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
2100                         phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
2101                         phba->fcoe_eventtag);
2102
2103         spin_lock_irq(&phba->hbalock);
2104         phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
2105         spin_unlock_irq(&phba->hbalock);
2106
2107         if (phba->link_state >= LPFC_LINK_UP) {
2108                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
2109                                 "2780 Restart FCF table scan due to "
2110                                 "pending FCF event:evt_tag_at_scan:x%x, "
2111                                 "evt_tag_current:x%x\n",
2112                                 phba->fcoe_eventtag_at_fcf_scan,
2113                                 phba->fcoe_eventtag);
2114                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
2115         } else {
2116                 /*
2117                  * Do not continue FCF discovery and clear FCF_TS_INPROG
2118                  * flag
2119                  */
2120                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
2121                                 "2833 Stop FCF discovery process due to link "
2122                                 "state change (x%x)\n", phba->link_state);
2123                 spin_lock_irq(&phba->hbalock);
2124                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
2125                 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
2126                 spin_unlock_irq(&phba->hbalock);
2127         }
2128
2129         /* Unregister the currently registered FCF if required */
2130         if (unreg_fcf) {
2131                 spin_lock_irq(&phba->hbalock);
2132                 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
2133                 spin_unlock_irq(&phba->hbalock);
2134                 lpfc_sli4_unregister_fcf(phba);
2135         }
2136         return 1;
2137 }
2138
2139 /**
2140  * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
2141  * @phba: pointer to lpfc hba data structure.
2142  * @fcf_cnt: number of eligible fcf record seen so far.
2143  *
2144  * This function makes an running random selection decision on FCF record to
2145  * use through a sequence of @fcf_cnt eligible FCF records with equal
2146  * probability. To perform integer manunipulation of random numbers with
2147  * size unit32_t, the lower 16 bits of the 32-bit random number returned
2148  * from prandom_u32() are taken as the random random number generated.
2149  *
2150  * Returns true when outcome is for the newly read FCF record should be
2151  * chosen; otherwise, return false when outcome is for keeping the previously
2152  * chosen FCF record.
2153  **/
2154 static bool
2155 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
2156 {
2157         uint32_t rand_num;
2158
2159         /* Get 16-bit uniform random number */
2160         rand_num = 0xFFFF & prandom_u32();
2161
2162         /* Decision with probability 1/fcf_cnt */
2163         if ((fcf_cnt * rand_num) < 0xFFFF)
2164                 return true;
2165         else
2166                 return false;
2167 }
2168
2169 /**
2170  * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
2171  * @phba: pointer to lpfc hba data structure.
2172  * @mboxq: pointer to mailbox object.
2173  * @next_fcf_index: pointer to holder of next fcf index.
2174  *
2175  * This routine parses the non-embedded fcf mailbox command by performing the
2176  * necessarily error checking, non-embedded read FCF record mailbox command
2177  * SGE parsing, and endianness swapping.
2178  *
2179  * Returns the pointer to the new FCF record in the non-embedded mailbox
2180  * command DMA memory if successfully, other NULL.
2181  */
2182 static struct fcf_record *
2183 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
2184                              uint16_t *next_fcf_index)
2185 {
2186         void *virt_addr;
2187         struct lpfc_mbx_sge sge;
2188         struct lpfc_mbx_read_fcf_tbl *read_fcf;
2189         uint32_t shdr_status, shdr_add_status, if_type;
2190         union lpfc_sli4_cfg_shdr *shdr;
2191         struct fcf_record *new_fcf_record;
2192
2193         /* Get the first SGE entry from the non-embedded DMA memory. This
2194          * routine only uses a single SGE.
2195          */
2196         lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
2197         if (unlikely(!mboxq->sge_array)) {
2198                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2199                                 "2524 Failed to get the non-embedded SGE "
2200                                 "virtual address\n");
2201                 return NULL;
2202         }
2203         virt_addr = mboxq->sge_array->addr[0];
2204
2205         shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
2206         lpfc_sli_pcimem_bcopy(shdr, shdr,
2207                               sizeof(union lpfc_sli4_cfg_shdr));
2208         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
2209         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
2210         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
2211         if (shdr_status || shdr_add_status) {
2212                 if (shdr_status == STATUS_FCF_TABLE_EMPTY ||
2213                                         if_type == LPFC_SLI_INTF_IF_TYPE_2)
2214                         lpfc_printf_log(phba, KERN_ERR,
2215                                         LOG_TRACE_EVENT,
2216                                         "2726 READ_FCF_RECORD Indicates empty "
2217                                         "FCF table.\n");
2218                 else
2219                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2220                                         "2521 READ_FCF_RECORD mailbox failed "
2221                                         "with status x%x add_status x%x, "
2222                                         "mbx\n", shdr_status, shdr_add_status);
2223                 return NULL;
2224         }
2225
2226         /* Interpreting the returned information of the FCF record */
2227         read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
2228         lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
2229                               sizeof(struct lpfc_mbx_read_fcf_tbl));
2230         *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
2231         new_fcf_record = (struct fcf_record *)(virt_addr +
2232                           sizeof(struct lpfc_mbx_read_fcf_tbl));
2233         lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
2234                                 offsetof(struct fcf_record, vlan_bitmap));
2235         new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
2236         new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
2237
2238         return new_fcf_record;
2239 }
2240
2241 /**
2242  * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
2243  * @phba: pointer to lpfc hba data structure.
2244  * @fcf_record: pointer to the fcf record.
2245  * @vlan_id: the lowest vlan identifier associated to this fcf record.
2246  * @next_fcf_index: the index to the next fcf record in hba's fcf table.
2247  *
2248  * This routine logs the detailed FCF record if the LOG_FIP loggin is
2249  * enabled.
2250  **/
2251 static void
2252 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
2253                               struct fcf_record *fcf_record,
2254                               uint16_t vlan_id,
2255                               uint16_t next_fcf_index)
2256 {
2257         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2258                         "2764 READ_FCF_RECORD:\n"
2259                         "\tFCF_Index     : x%x\n"
2260                         "\tFCF_Avail     : x%x\n"
2261                         "\tFCF_Valid     : x%x\n"
2262                         "\tFCF_SOL       : x%x\n"
2263                         "\tFIP_Priority  : x%x\n"
2264                         "\tMAC_Provider  : x%x\n"
2265                         "\tLowest VLANID : x%x\n"
2266                         "\tFCF_MAC Addr  : x%x:%x:%x:%x:%x:%x\n"
2267                         "\tFabric_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
2268                         "\tSwitch_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
2269                         "\tNext_FCF_Index: x%x\n",
2270                         bf_get(lpfc_fcf_record_fcf_index, fcf_record),
2271                         bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
2272                         bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
2273                         bf_get(lpfc_fcf_record_fcf_sol, fcf_record),
2274                         fcf_record->fip_priority,
2275                         bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
2276                         vlan_id,
2277                         bf_get(lpfc_fcf_record_mac_0, fcf_record),
2278                         bf_get(lpfc_fcf_record_mac_1, fcf_record),
2279                         bf_get(lpfc_fcf_record_mac_2, fcf_record),
2280                         bf_get(lpfc_fcf_record_mac_3, fcf_record),
2281                         bf_get(lpfc_fcf_record_mac_4, fcf_record),
2282                         bf_get(lpfc_fcf_record_mac_5, fcf_record),
2283                         bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
2284                         bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
2285                         bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
2286                         bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
2287                         bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
2288                         bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
2289                         bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
2290                         bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
2291                         bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
2292                         bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
2293                         bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
2294                         bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
2295                         bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
2296                         bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
2297                         bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
2298                         bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
2299                         next_fcf_index);
2300 }
2301
2302 /**
2303  * lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
2304  * @phba: pointer to lpfc hba data structure.
2305  * @fcf_rec: pointer to an existing FCF record.
2306  * @new_fcf_record: pointer to a new FCF record.
2307  * @new_vlan_id: vlan id from the new FCF record.
2308  *
2309  * This function performs matching test of a new FCF record against an existing
2310  * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
2311  * will not be used as part of the FCF record matching criteria.
2312  *
2313  * Returns true if all the fields matching, otherwise returns false.
2314  */
2315 static bool
2316 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
2317                            struct lpfc_fcf_rec *fcf_rec,
2318                            struct fcf_record *new_fcf_record,
2319                            uint16_t new_vlan_id)
2320 {
2321         if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
2322                 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
2323                         return false;
2324         if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
2325                 return false;
2326         if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
2327                 return false;
2328         if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
2329                 return false;
2330         if (fcf_rec->priority != new_fcf_record->fip_priority)
2331                 return false;
2332         return true;
2333 }
2334
2335 /**
2336  * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf
2337  * @vport: Pointer to vport object.
2338  * @fcf_index: index to next fcf.
2339  *
2340  * This function processing the roundrobin fcf failover to next fcf index.
2341  * When this function is invoked, there will be a current fcf registered
2342  * for flogi.
2343  * Return: 0 for continue retrying flogi on currently registered fcf;
2344  *         1 for stop flogi on currently registered fcf;
2345  */
2346 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index)
2347 {
2348         struct lpfc_hba *phba = vport->phba;
2349         int rc;
2350
2351         if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
2352                 spin_lock_irq(&phba->hbalock);
2353                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2354                         spin_unlock_irq(&phba->hbalock);
2355                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2356                                         "2872 Devloss tmo with no eligible "
2357                                         "FCF, unregister in-use FCF (x%x) "
2358                                         "and rescan FCF table\n",
2359                                         phba->fcf.current_rec.fcf_indx);
2360                         lpfc_unregister_fcf_rescan(phba);
2361                         goto stop_flogi_current_fcf;
2362                 }
2363                 /* Mark the end to FLOGI roundrobin failover */
2364                 phba->hba_flag &= ~FCF_RR_INPROG;
2365                 /* Allow action to new fcf asynchronous event */
2366                 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
2367                 spin_unlock_irq(&phba->hbalock);
2368                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2369                                 "2865 No FCF available, stop roundrobin FCF "
2370                                 "failover and change port state:x%x/x%x\n",
2371                                 phba->pport->port_state, LPFC_VPORT_UNKNOWN);
2372                 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
2373
2374                 if (!phba->fcf.fcf_redisc_attempted) {
2375                         lpfc_unregister_fcf(phba);
2376
2377                         rc = lpfc_sli4_redisc_fcf_table(phba);
2378                         if (!rc) {
2379                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2380                                                 "3195 Rediscover FCF table\n");
2381                                 phba->fcf.fcf_redisc_attempted = 1;
2382                                 lpfc_sli4_clear_fcf_rr_bmask(phba);
2383                         } else {
2384                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2385                                                 "3196 Rediscover FCF table "
2386                                                 "failed. Status:x%x\n", rc);
2387                         }
2388                 } else {
2389                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2390                                         "3197 Already rediscover FCF table "
2391                                         "attempted. No more retry\n");
2392                 }
2393                 goto stop_flogi_current_fcf;
2394         } else {
2395                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS,
2396                                 "2794 Try FLOGI roundrobin FCF failover to "
2397                                 "(x%x)\n", fcf_index);
2398                 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index);
2399                 if (rc)
2400                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
2401                                         "2761 FLOGI roundrobin FCF failover "
2402                                         "failed (rc:x%x) to read FCF (x%x)\n",
2403                                         rc, phba->fcf.current_rec.fcf_indx);
2404                 else
2405                         goto stop_flogi_current_fcf;
2406         }
2407         return 0;
2408
2409 stop_flogi_current_fcf:
2410         lpfc_can_disctmo(vport);
2411         return 1;
2412 }
2413
2414 /**
2415  * lpfc_sli4_fcf_pri_list_del
2416  * @phba: pointer to lpfc hba data structure.
2417  * @fcf_index: the index of the fcf record to delete
2418  * This routine checks the on list flag of the fcf_index to be deleted.
2419  * If it is one the list then it is removed from the list, and the flag
2420  * is cleared. This routine grab the hbalock before removing the fcf
2421  * record from the list.
2422  **/
2423 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba,
2424                         uint16_t fcf_index)
2425 {
2426         struct lpfc_fcf_pri *new_fcf_pri;
2427
2428         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2429         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2430                 "3058 deleting idx x%x pri x%x flg x%x\n",
2431                 fcf_index, new_fcf_pri->fcf_rec.priority,
2432                  new_fcf_pri->fcf_rec.flag);
2433         spin_lock_irq(&phba->hbalock);
2434         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) {
2435                 if (phba->fcf.current_rec.priority ==
2436                                 new_fcf_pri->fcf_rec.priority)
2437                         phba->fcf.eligible_fcf_cnt--;
2438                 list_del_init(&new_fcf_pri->list);
2439                 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST;
2440         }
2441         spin_unlock_irq(&phba->hbalock);
2442 }
2443
2444 /**
2445  * lpfc_sli4_set_fcf_flogi_fail
2446  * @phba: pointer to lpfc hba data structure.
2447  * @fcf_index: the index of the fcf record to update
2448  * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED
2449  * flag so the the round robin slection for the particular priority level
2450  * will try a different fcf record that does not have this bit set.
2451  * If the fcf record is re-read for any reason this flag is cleared brfore
2452  * adding it to the priority list.
2453  **/
2454 void
2455 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index)
2456 {
2457         struct lpfc_fcf_pri *new_fcf_pri;
2458         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2459         spin_lock_irq(&phba->hbalock);
2460         new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED;
2461         spin_unlock_irq(&phba->hbalock);
2462 }
2463
2464 /**
2465  * lpfc_sli4_fcf_pri_list_add
2466  * @phba: pointer to lpfc hba data structure.
2467  * @fcf_index: the index of the fcf record to add
2468  * @new_fcf_record: pointer to a new FCF record.
2469  * This routine checks the priority of the fcf_index to be added.
2470  * If it is a lower priority than the current head of the fcf_pri list
2471  * then it is added to the list in the right order.
2472  * If it is the same priority as the current head of the list then it
2473  * is added to the head of the list and its bit in the rr_bmask is set.
2474  * If the fcf_index to be added is of a higher priority than the current
2475  * head of the list then the rr_bmask is cleared, its bit is set in the
2476  * rr_bmask and it is added to the head of the list.
2477  * returns:
2478  * 0=success 1=failure
2479  **/
2480 static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba,
2481         uint16_t fcf_index,
2482         struct fcf_record *new_fcf_record)
2483 {
2484         uint16_t current_fcf_pri;
2485         uint16_t last_index;
2486         struct lpfc_fcf_pri *fcf_pri;
2487         struct lpfc_fcf_pri *next_fcf_pri;
2488         struct lpfc_fcf_pri *new_fcf_pri;
2489         int ret;
2490
2491         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2492         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2493                 "3059 adding idx x%x pri x%x flg x%x\n",
2494                 fcf_index, new_fcf_record->fip_priority,
2495                  new_fcf_pri->fcf_rec.flag);
2496         spin_lock_irq(&phba->hbalock);
2497         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST)
2498                 list_del_init(&new_fcf_pri->list);
2499         new_fcf_pri->fcf_rec.fcf_index = fcf_index;
2500         new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
2501         if (list_empty(&phba->fcf.fcf_pri_list)) {
2502                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2503                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2504                                 new_fcf_pri->fcf_rec.fcf_index);
2505                 goto out;
2506         }
2507
2508         last_index = find_first_bit(phba->fcf.fcf_rr_bmask,
2509                                 LPFC_SLI4_FCF_TBL_INDX_MAX);
2510         if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
2511                 ret = 0; /* Empty rr list */
2512                 goto out;
2513         }
2514         current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority;
2515         if (new_fcf_pri->fcf_rec.priority <=  current_fcf_pri) {
2516                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2517                 if (new_fcf_pri->fcf_rec.priority <  current_fcf_pri) {
2518                         memset(phba->fcf.fcf_rr_bmask, 0,
2519                                 sizeof(*phba->fcf.fcf_rr_bmask));
2520                         /* fcfs_at_this_priority_level = 1; */
2521                         phba->fcf.eligible_fcf_cnt = 1;
2522                 } else
2523                         /* fcfs_at_this_priority_level++; */
2524                         phba->fcf.eligible_fcf_cnt++;
2525                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2526                                 new_fcf_pri->fcf_rec.fcf_index);
2527                 goto out;
2528         }
2529
2530         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
2531                                 &phba->fcf.fcf_pri_list, list) {
2532                 if (new_fcf_pri->fcf_rec.priority <=
2533                                 fcf_pri->fcf_rec.priority) {
2534                         if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list)
2535                                 list_add(&new_fcf_pri->list,
2536                                                 &phba->fcf.fcf_pri_list);
2537                         else
2538                                 list_add(&new_fcf_pri->list,
2539                                          &((struct lpfc_fcf_pri *)
2540                                         fcf_pri->list.prev)->list);
2541                         ret = 0;
2542                         goto out;
2543                 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list
2544                         || new_fcf_pri->fcf_rec.priority <
2545                                 next_fcf_pri->fcf_rec.priority) {
2546                         list_add(&new_fcf_pri->list, &fcf_pri->list);
2547                         ret = 0;
2548                         goto out;
2549                 }
2550                 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority)
2551                         continue;
2552
2553         }
2554         ret = 1;
2555 out:
2556         /* we use = instead of |= to clear the FLOGI_FAILED flag. */
2557         new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST;
2558         spin_unlock_irq(&phba->hbalock);
2559         return ret;
2560 }
2561
2562 /**
2563  * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
2564  * @phba: pointer to lpfc hba data structure.
2565  * @mboxq: pointer to mailbox object.
2566  *
2567  * This function iterates through all the fcf records available in
2568  * HBA and chooses the optimal FCF record for discovery. After finding
2569  * the FCF for discovery it registers the FCF record and kicks start
2570  * discovery.
2571  * If FCF_IN_USE flag is set in currently used FCF, the routine tries to
2572  * use an FCF record which matches fabric name and mac address of the
2573  * currently used FCF record.
2574  * If the driver supports only one FCF, it will try to use the FCF record
2575  * used by BOOT_BIOS.
2576  */
2577 void
2578 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2579 {
2580         struct fcf_record *new_fcf_record;
2581         uint32_t boot_flag, addr_mode;
2582         uint16_t fcf_index, next_fcf_index;
2583         struct lpfc_fcf_rec *fcf_rec = NULL;
2584         uint16_t vlan_id = LPFC_FCOE_NULL_VID;
2585         bool select_new_fcf;
2586         int rc;
2587
2588         /* If there is pending FCoE event restart FCF table scan */
2589         if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) {
2590                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2591                 return;
2592         }
2593
2594         /* Parse the FCF record from the non-embedded mailbox command */
2595         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2596                                                       &next_fcf_index);
2597         if (!new_fcf_record) {
2598                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2599                                 "2765 Mailbox command READ_FCF_RECORD "
2600                                 "failed to retrieve a FCF record.\n");
2601                 /* Let next new FCF event trigger fast failover */
2602                 spin_lock_irq(&phba->hbalock);
2603                 phba->hba_flag &= ~FCF_TS_INPROG;
2604                 spin_unlock_irq(&phba->hbalock);
2605                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2606                 return;
2607         }
2608
2609         /* Check the FCF record against the connection list */
2610         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2611                                       &addr_mode, &vlan_id);
2612
2613         /* Log the FCF record information if turned on */
2614         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2615                                       next_fcf_index);
2616
2617         /*
2618          * If the fcf record does not match with connect list entries
2619          * read the next entry; otherwise, this is an eligible FCF
2620          * record for roundrobin FCF failover.
2621          */
2622         if (!rc) {
2623                 lpfc_sli4_fcf_pri_list_del(phba,
2624                                         bf_get(lpfc_fcf_record_fcf_index,
2625                                                new_fcf_record));
2626                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2627                                 "2781 FCF (x%x) failed connection "
2628                                 "list check: (x%x/x%x/%x)\n",
2629                                 bf_get(lpfc_fcf_record_fcf_index,
2630                                        new_fcf_record),
2631                                 bf_get(lpfc_fcf_record_fcf_avail,
2632                                        new_fcf_record),
2633                                 bf_get(lpfc_fcf_record_fcf_valid,
2634                                        new_fcf_record),
2635                                 bf_get(lpfc_fcf_record_fcf_sol,
2636                                        new_fcf_record));
2637                 if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
2638                     lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2639                     new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
2640                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) !=
2641                             phba->fcf.current_rec.fcf_indx) {
2642                                 lpfc_printf_log(phba, KERN_ERR,
2643                                                 LOG_TRACE_EVENT,
2644                                         "2862 FCF (x%x) matches property "
2645                                         "of in-use FCF (x%x)\n",
2646                                         bf_get(lpfc_fcf_record_fcf_index,
2647                                                new_fcf_record),
2648                                         phba->fcf.current_rec.fcf_indx);
2649                                 goto read_next_fcf;
2650                         }
2651                         /*
2652                          * In case the current in-use FCF record becomes
2653                          * invalid/unavailable during FCF discovery that
2654                          * was not triggered by fast FCF failover process,
2655                          * treat it as fast FCF failover.
2656                          */
2657                         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
2658                             !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2659                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2660                                                 "2835 Invalid in-use FCF "
2661                                                 "(x%x), enter FCF failover "
2662                                                 "table scan.\n",
2663                                                 phba->fcf.current_rec.fcf_indx);
2664                                 spin_lock_irq(&phba->hbalock);
2665                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2666                                 spin_unlock_irq(&phba->hbalock);
2667                                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2668                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2669                                                 LPFC_FCOE_FCF_GET_FIRST);
2670                                 return;
2671                         }
2672                 }
2673                 goto read_next_fcf;
2674         } else {
2675                 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2676                 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index,
2677                                                         new_fcf_record);
2678                 if (rc)
2679                         goto read_next_fcf;
2680         }
2681
2682         /*
2683          * If this is not the first FCF discovery of the HBA, use last
2684          * FCF record for the discovery. The condition that a rescan
2685          * matches the in-use FCF record: fabric name, switch name, mac
2686          * address, and vlan_id.
2687          */
2688         spin_lock_irq(&phba->hbalock);
2689         if (phba->fcf.fcf_flag & FCF_IN_USE) {
2690                 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2691                         lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2692                     new_fcf_record, vlan_id)) {
2693                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) ==
2694                             phba->fcf.current_rec.fcf_indx) {
2695                                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2696                                 if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
2697                                         /* Stop FCF redisc wait timer */
2698                                         __lpfc_sli4_stop_fcf_redisc_wait_timer(
2699                                                                         phba);
2700                                 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2701                                         /* Fast failover, mark completed */
2702                                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2703                                 spin_unlock_irq(&phba->hbalock);
2704                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2705                                                 "2836 New FCF matches in-use "
2706                                                 "FCF (x%x), port_state:x%x, "
2707                                                 "fc_flag:x%x\n",
2708                                                 phba->fcf.current_rec.fcf_indx,
2709                                                 phba->pport->port_state,
2710                                                 phba->pport->fc_flag);
2711                                 goto out;
2712                         } else
2713                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2714                                         "2863 New FCF (x%x) matches "
2715                                         "property of in-use FCF (x%x)\n",
2716                                         bf_get(lpfc_fcf_record_fcf_index,
2717                                                new_fcf_record),
2718                                         phba->fcf.current_rec.fcf_indx);
2719                 }
2720                 /*
2721                  * Read next FCF record from HBA searching for the matching
2722                  * with in-use record only if not during the fast failover
2723                  * period. In case of fast failover period, it shall try to
2724                  * determine whether the FCF record just read should be the
2725                  * next candidate.
2726                  */
2727                 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2728                         spin_unlock_irq(&phba->hbalock);
2729                         goto read_next_fcf;
2730                 }
2731         }
2732         /*
2733          * Update on failover FCF record only if it's in FCF fast-failover
2734          * period; otherwise, update on current FCF record.
2735          */
2736         if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2737                 fcf_rec = &phba->fcf.failover_rec;
2738         else
2739                 fcf_rec = &phba->fcf.current_rec;
2740
2741         if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
2742                 /*
2743                  * If the driver FCF record does not have boot flag
2744                  * set and new hba fcf record has boot flag set, use
2745                  * the new hba fcf record.
2746                  */
2747                 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
2748                         /* Choose this FCF record */
2749                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2750                                         "2837 Update current FCF record "
2751                                         "(x%x) with new FCF record (x%x)\n",
2752                                         fcf_rec->fcf_indx,
2753                                         bf_get(lpfc_fcf_record_fcf_index,
2754                                         new_fcf_record));
2755                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2756                                         addr_mode, vlan_id, BOOT_ENABLE);
2757                         spin_unlock_irq(&phba->hbalock);
2758                         goto read_next_fcf;
2759                 }
2760                 /*
2761                  * If the driver FCF record has boot flag set and the
2762                  * new hba FCF record does not have boot flag, read
2763                  * the next FCF record.
2764                  */
2765                 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
2766                         spin_unlock_irq(&phba->hbalock);
2767                         goto read_next_fcf;
2768                 }
2769                 /*
2770                  * If the new hba FCF record has lower priority value
2771                  * than the driver FCF record, use the new record.
2772                  */
2773                 if (new_fcf_record->fip_priority < fcf_rec->priority) {
2774                         /* Choose the new FCF record with lower priority */
2775                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2776                                         "2838 Update current FCF record "
2777                                         "(x%x) with new FCF record (x%x)\n",
2778                                         fcf_rec->fcf_indx,
2779                                         bf_get(lpfc_fcf_record_fcf_index,
2780                                                new_fcf_record));
2781                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2782                                         addr_mode, vlan_id, 0);
2783                         /* Reset running random FCF selection count */
2784                         phba->fcf.eligible_fcf_cnt = 1;
2785                 } else if (new_fcf_record->fip_priority == fcf_rec->priority) {
2786                         /* Update running random FCF selection count */
2787                         phba->fcf.eligible_fcf_cnt++;
2788                         select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
2789                                                 phba->fcf.eligible_fcf_cnt);
2790                         if (select_new_fcf) {
2791                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2792                                         "2839 Update current FCF record "
2793                                         "(x%x) with new FCF record (x%x)\n",
2794                                         fcf_rec->fcf_indx,
2795                                         bf_get(lpfc_fcf_record_fcf_index,
2796                                                new_fcf_record));
2797                                 /* Choose the new FCF by random selection */
2798                                 __lpfc_update_fcf_record(phba, fcf_rec,
2799                                                          new_fcf_record,
2800                                                          addr_mode, vlan_id, 0);
2801                         }
2802                 }
2803                 spin_unlock_irq(&phba->hbalock);
2804                 goto read_next_fcf;
2805         }
2806         /*
2807          * This is the first suitable FCF record, choose this record for
2808          * initial best-fit FCF.
2809          */
2810         if (fcf_rec) {
2811                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2812                                 "2840 Update initial FCF candidate "
2813                                 "with FCF (x%x)\n",
2814                                 bf_get(lpfc_fcf_record_fcf_index,
2815                                        new_fcf_record));
2816                 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2817                                          addr_mode, vlan_id, (boot_flag ?
2818                                          BOOT_ENABLE : 0));
2819                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2820                 /* Setup initial running random FCF selection count */
2821                 phba->fcf.eligible_fcf_cnt = 1;
2822         }
2823         spin_unlock_irq(&phba->hbalock);
2824         goto read_next_fcf;
2825
2826 read_next_fcf:
2827         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2828         if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
2829                 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
2830                         /*
2831                          * Case of FCF fast failover scan
2832                          */
2833
2834                         /*
2835                          * It has not found any suitable FCF record, cancel
2836                          * FCF scan inprogress, and do nothing
2837                          */
2838                         if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
2839                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2840                                                "2782 No suitable FCF found: "
2841                                                "(x%x/x%x)\n",
2842                                                phba->fcoe_eventtag_at_fcf_scan,
2843                                                bf_get(lpfc_fcf_record_fcf_index,
2844                                                       new_fcf_record));
2845                                 spin_lock_irq(&phba->hbalock);
2846                                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2847                                         phba->hba_flag &= ~FCF_TS_INPROG;
2848                                         spin_unlock_irq(&phba->hbalock);
2849                                         /* Unregister in-use FCF and rescan */
2850                                         lpfc_printf_log(phba, KERN_INFO,
2851                                                         LOG_FIP,
2852                                                         "2864 On devloss tmo "
2853                                                         "unreg in-use FCF and "
2854                                                         "rescan FCF table\n");
2855                                         lpfc_unregister_fcf_rescan(phba);
2856                                         return;
2857                                 }
2858                                 /*
2859                                  * Let next new FCF event trigger fast failover
2860                                  */
2861                                 phba->hba_flag &= ~FCF_TS_INPROG;
2862                                 spin_unlock_irq(&phba->hbalock);
2863                                 return;
2864                         }
2865                         /*
2866                          * It has found a suitable FCF record that is not
2867                          * the same as in-use FCF record, unregister the
2868                          * in-use FCF record, replace the in-use FCF record
2869                          * with the new FCF record, mark FCF fast failover
2870                          * completed, and then start register the new FCF
2871                          * record.
2872                          */
2873
2874                         /* Unregister the current in-use FCF record */
2875                         lpfc_unregister_fcf(phba);
2876
2877                         /* Replace in-use record with the new record */
2878                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2879                                         "2842 Replace in-use FCF (x%x) "
2880                                         "with failover FCF (x%x)\n",
2881                                         phba->fcf.current_rec.fcf_indx,
2882                                         phba->fcf.failover_rec.fcf_indx);
2883                         memcpy(&phba->fcf.current_rec,
2884                                &phba->fcf.failover_rec,
2885                                sizeof(struct lpfc_fcf_rec));
2886                         /*
2887                          * Mark the fast FCF failover rediscovery completed
2888                          * and the start of the first round of the roundrobin
2889                          * FCF failover.
2890                          */
2891                         spin_lock_irq(&phba->hbalock);
2892                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2893                         spin_unlock_irq(&phba->hbalock);
2894                         /* Register to the new FCF record */
2895                         lpfc_register_fcf(phba);
2896                 } else {
2897                         /*
2898                          * In case of transaction period to fast FCF failover,
2899                          * do nothing when search to the end of the FCF table.
2900                          */
2901                         if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
2902                             (phba->fcf.fcf_flag & FCF_REDISC_PEND))
2903                                 return;
2904
2905                         if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2906                                 phba->fcf.fcf_flag & FCF_IN_USE) {
2907                                 /*
2908                                  * In case the current in-use FCF record no
2909                                  * longer existed during FCF discovery that
2910                                  * was not triggered by fast FCF failover
2911                                  * process, treat it as fast FCF failover.
2912                                  */
2913                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2914                                                 "2841 In-use FCF record (x%x) "
2915                                                 "not reported, entering fast "
2916                                                 "FCF failover mode scanning.\n",
2917                                                 phba->fcf.current_rec.fcf_indx);
2918                                 spin_lock_irq(&phba->hbalock);
2919                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2920                                 spin_unlock_irq(&phba->hbalock);
2921                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2922                                                 LPFC_FCOE_FCF_GET_FIRST);
2923                                 return;
2924                         }
2925                         /* Register to the new FCF record */
2926                         lpfc_register_fcf(phba);
2927                 }
2928         } else
2929                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
2930         return;
2931
2932 out:
2933         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2934         lpfc_register_fcf(phba);
2935
2936         return;
2937 }
2938
2939 /**
2940  * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler
2941  * @phba: pointer to lpfc hba data structure.
2942  * @mboxq: pointer to mailbox object.
2943  *
2944  * This is the callback function for FLOGI failure roundrobin FCF failover
2945  * read FCF record mailbox command from the eligible FCF record bmask for
2946  * performing the failover. If the FCF read back is not valid/available, it
2947  * fails through to retrying FLOGI to the currently registered FCF again.
2948  * Otherwise, if the FCF read back is valid and available, it will set the
2949  * newly read FCF record to the failover FCF record, unregister currently
2950  * registered FCF record, copy the failover FCF record to the current
2951  * FCF record, and then register the current FCF record before proceeding
2952  * to trying FLOGI on the new failover FCF.
2953  */
2954 void
2955 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2956 {
2957         struct fcf_record *new_fcf_record;
2958         uint32_t boot_flag, addr_mode;
2959         uint16_t next_fcf_index, fcf_index;
2960         uint16_t current_fcf_index;
2961         uint16_t vlan_id;
2962         int rc;
2963
2964         /* If link state is not up, stop the roundrobin failover process */
2965         if (phba->link_state < LPFC_LINK_UP) {
2966                 spin_lock_irq(&phba->hbalock);
2967                 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
2968                 phba->hba_flag &= ~FCF_RR_INPROG;
2969                 spin_unlock_irq(&phba->hbalock);
2970                 goto out;
2971         }
2972
2973         /* Parse the FCF record from the non-embedded mailbox command */
2974         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2975                                                       &next_fcf_index);
2976         if (!new_fcf_record) {
2977                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2978                                 "2766 Mailbox command READ_FCF_RECORD "
2979                                 "failed to retrieve a FCF record. "
2980                                 "hba_flg x%x fcf_flg x%x\n", phba->hba_flag,
2981                                 phba->fcf.fcf_flag);
2982                 lpfc_unregister_fcf_rescan(phba);
2983                 goto out;
2984         }
2985
2986         /* Get the needed parameters from FCF record */
2987         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2988                                       &addr_mode, &vlan_id);
2989
2990         /* Log the FCF record information if turned on */
2991         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2992                                       next_fcf_index);
2993
2994         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2995         if (!rc) {
2996                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2997                                 "2848 Remove ineligible FCF (x%x) from "
2998                                 "from roundrobin bmask\n", fcf_index);
2999                 /* Clear roundrobin bmask bit for ineligible FCF */
3000                 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index);
3001                 /* Perform next round of roundrobin FCF failover */
3002                 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
3003                 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index);
3004                 if (rc)
3005                         goto out;
3006                 goto error_out;
3007         }
3008
3009         if (fcf_index == phba->fcf.current_rec.fcf_indx) {
3010                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3011                                 "2760 Perform FLOGI roundrobin FCF failover: "
3012                                 "FCF (x%x) back to FCF (x%x)\n",
3013                                 phba->fcf.current_rec.fcf_indx, fcf_index);
3014                 /* Wait 500 ms before retrying FLOGI to current FCF */
3015                 msleep(500);
3016                 lpfc_issue_init_vfi(phba->pport);
3017                 goto out;
3018         }
3019
3020         /* Upload new FCF record to the failover FCF record */
3021         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3022                         "2834 Update current FCF (x%x) with new FCF (x%x)\n",
3023                         phba->fcf.failover_rec.fcf_indx, fcf_index);
3024         spin_lock_irq(&phba->hbalock);
3025         __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
3026                                  new_fcf_record, addr_mode, vlan_id,
3027                                  (boot_flag ? BOOT_ENABLE : 0));
3028         spin_unlock_irq(&phba->hbalock);
3029
3030         current_fcf_index = phba->fcf.current_rec.fcf_indx;
3031
3032         /* Unregister the current in-use FCF record */
3033         lpfc_unregister_fcf(phba);
3034
3035         /* Replace in-use record with the new record */
3036         memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
3037                sizeof(struct lpfc_fcf_rec));
3038
3039         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3040                         "2783 Perform FLOGI roundrobin FCF failover: FCF "
3041                         "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index);
3042
3043 error_out:
3044         lpfc_register_fcf(phba);
3045 out:
3046         lpfc_sli4_mbox_cmd_free(phba, mboxq);
3047 }
3048
3049 /**
3050  * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
3051  * @phba: pointer to lpfc hba data structure.
3052  * @mboxq: pointer to mailbox object.
3053  *
3054  * This is the callback function of read FCF record mailbox command for
3055  * updating the eligible FCF bmask for FLOGI failure roundrobin FCF
3056  * failover when a new FCF event happened. If the FCF read back is
3057  * valid/available and it passes the connection list check, it updates
3058  * the bmask for the eligible FCF record for roundrobin failover.
3059  */
3060 void
3061 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3062 {
3063         struct fcf_record *new_fcf_record;
3064         uint32_t boot_flag, addr_mode;
3065         uint16_t fcf_index, next_fcf_index;
3066         uint16_t vlan_id;
3067         int rc;
3068
3069         /* If link state is not up, no need to proceed */
3070         if (phba->link_state < LPFC_LINK_UP)
3071                 goto out;
3072
3073         /* If FCF discovery period is over, no need to proceed */
3074         if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
3075                 goto out;
3076
3077         /* Parse the FCF record from the non-embedded mailbox command */
3078         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
3079                                                       &next_fcf_index);
3080         if (!new_fcf_record) {
3081                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3082                                 "2767 Mailbox command READ_FCF_RECORD "
3083                                 "failed to retrieve a FCF record.\n");
3084                 goto out;
3085         }
3086
3087         /* Check the connection list for eligibility */
3088         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
3089                                       &addr_mode, &vlan_id);
3090
3091         /* Log the FCF record information if turned on */
3092         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
3093                                       next_fcf_index);
3094
3095         if (!rc)
3096                 goto out;
3097
3098         /* Update the eligible FCF record index bmask */
3099         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
3100
3101         rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record);
3102
3103 out:
3104         lpfc_sli4_mbox_cmd_free(phba, mboxq);
3105 }
3106
3107 /**
3108  * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command.
3109  * @phba: pointer to lpfc hba data structure.
3110  * @mboxq: pointer to mailbox data structure.
3111  *
3112  * This function handles completion of init vfi mailbox command.
3113  */
3114 static void
3115 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3116 {
3117         struct lpfc_vport *vport = mboxq->vport;
3118
3119         /*
3120          * VFI not supported on interface type 0, just do the flogi
3121          * Also continue if the VFI is in use - just use the same one.
3122          */
3123         if (mboxq->u.mb.mbxStatus &&
3124             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
3125                         LPFC_SLI_INTF_IF_TYPE_0) &&
3126             mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
3127                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3128                                  "2891 Init VFI mailbox failed 0x%x\n",
3129                                  mboxq->u.mb.mbxStatus);
3130                 mempool_free(mboxq, phba->mbox_mem_pool);
3131                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3132                 return;
3133         }
3134
3135         lpfc_initial_flogi(vport);
3136         mempool_free(mboxq, phba->mbox_mem_pool);
3137         return;
3138 }
3139
3140 /**
3141  * lpfc_issue_init_vfi - Issue init_vfi mailbox command.
3142  * @vport: pointer to lpfc_vport data structure.
3143  *
3144  * This function issue a init_vfi mailbox command to initialize the VFI and
3145  * VPI for the physical port.
3146  */
3147 void
3148 lpfc_issue_init_vfi(struct lpfc_vport *vport)
3149 {
3150         LPFC_MBOXQ_t *mboxq;
3151         int rc;
3152         struct lpfc_hba *phba = vport->phba;
3153
3154         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3155         if (!mboxq) {
3156                 lpfc_printf_vlog(vport, KERN_ERR,
3157                         LOG_TRACE_EVENT, "2892 Failed to allocate "
3158                         "init_vfi mailbox\n");
3159                 return;
3160         }
3161         lpfc_init_vfi(mboxq, vport);
3162         mboxq->mbox_cmpl = lpfc_init_vfi_cmpl;
3163         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
3164         if (rc == MBX_NOT_FINISHED) {
3165                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3166                                  "2893 Failed to issue init_vfi mailbox\n");
3167                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
3168         }
3169 }
3170
3171 /**
3172  * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
3173  * @phba: pointer to lpfc hba data structure.
3174  * @mboxq: pointer to mailbox data structure.
3175  *
3176  * This function handles completion of init vpi mailbox command.
3177  */
3178 void
3179 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3180 {
3181         struct lpfc_vport *vport = mboxq->vport;
3182         struct lpfc_nodelist *ndlp;
3183         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3184
3185         if (mboxq->u.mb.mbxStatus) {
3186                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3187                                  "2609 Init VPI mailbox failed 0x%x\n",
3188                                  mboxq->u.mb.mbxStatus);
3189                 mempool_free(mboxq, phba->mbox_mem_pool);
3190                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3191                 return;
3192         }
3193         spin_lock_irq(shost->host_lock);
3194         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
3195         spin_unlock_irq(shost->host_lock);
3196
3197         /* If this port is physical port or FDISC is done, do reg_vpi */
3198         if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
3199                         ndlp = lpfc_findnode_did(vport, Fabric_DID);
3200                         if (!ndlp)
3201                                 lpfc_printf_vlog(vport, KERN_ERR,
3202                                         LOG_TRACE_EVENT,
3203                                         "2731 Cannot find fabric "
3204                                         "controller node\n");
3205                         else
3206                                 lpfc_register_new_vport(phba, vport, ndlp);
3207                         mempool_free(mboxq, phba->mbox_mem_pool);
3208                         return;
3209         }
3210
3211         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
3212                 lpfc_initial_fdisc(vport);
3213         else {
3214                 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
3215                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3216                                  "2606 No NPIV Fabric support\n");
3217         }
3218         mempool_free(mboxq, phba->mbox_mem_pool);
3219         return;
3220 }
3221
3222 /**
3223  * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
3224  * @vport: pointer to lpfc_vport data structure.
3225  *
3226  * This function issue a init_vpi mailbox command to initialize
3227  * VPI for the vport.
3228  */
3229 void
3230 lpfc_issue_init_vpi(struct lpfc_vport *vport)
3231 {
3232         LPFC_MBOXQ_t *mboxq;
3233         int rc, vpi;
3234
3235         if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) {
3236                 vpi = lpfc_alloc_vpi(vport->phba);
3237                 if (!vpi) {
3238                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3239                                          "3303 Failed to obtain vport vpi\n");
3240                         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3241                         return;
3242                 }
3243                 vport->vpi = vpi;
3244         }
3245
3246         mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
3247         if (!mboxq) {
3248                 lpfc_printf_vlog(vport, KERN_ERR,
3249                         LOG_TRACE_EVENT, "2607 Failed to allocate "
3250                         "init_vpi mailbox\n");
3251                 return;
3252         }
3253         lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
3254         mboxq->vport = vport;
3255         mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
3256         rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
3257         if (rc == MBX_NOT_FINISHED) {
3258                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3259                                  "2608 Failed to issue init_vpi mailbox\n");
3260                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
3261         }
3262 }
3263
3264 /**
3265  * lpfc_start_fdiscs - send fdiscs for each vports on this port.
3266  * @phba: pointer to lpfc hba data structure.
3267  *
3268  * This function loops through the list of vports on the @phba and issues an
3269  * FDISC if possible.
3270  */
3271 void
3272 lpfc_start_fdiscs(struct lpfc_hba *phba)
3273 {
3274         struct lpfc_vport **vports;
3275         int i;
3276
3277         vports = lpfc_create_vport_work_array(phba);
3278         if (vports != NULL) {
3279                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3280                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
3281                                 continue;
3282                         /* There are no vpi for this vport */
3283                         if (vports[i]->vpi > phba->max_vpi) {
3284                                 lpfc_vport_set_state(vports[i],
3285                                                      FC_VPORT_FAILED);
3286                                 continue;
3287                         }
3288                         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3289                                 lpfc_vport_set_state(vports[i],
3290                                                      FC_VPORT_LINKDOWN);
3291                                 continue;
3292                         }
3293                         if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
3294                                 lpfc_issue_init_vpi(vports[i]);
3295                                 continue;
3296                         }
3297                         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
3298                                 lpfc_initial_fdisc(vports[i]);
3299                         else {
3300                                 lpfc_vport_set_state(vports[i],
3301                                                      FC_VPORT_NO_FABRIC_SUPP);
3302                                 lpfc_printf_vlog(vports[i], KERN_ERR,
3303                                                  LOG_TRACE_EVENT,
3304                                                  "0259 No NPIV "
3305                                                  "Fabric support\n");
3306                         }
3307                 }
3308         }
3309         lpfc_destroy_vport_work_array(phba, vports);
3310 }
3311
3312 void
3313 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3314 {
3315         struct lpfc_dmabuf *dmabuf = mboxq->ctx_buf;
3316         struct lpfc_vport *vport = mboxq->vport;
3317         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3318
3319         /*
3320          * VFI not supported for interface type 0, so ignore any mailbox
3321          * error (except VFI in use) and continue with the discovery.
3322          */
3323         if (mboxq->u.mb.mbxStatus &&
3324             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
3325                         LPFC_SLI_INTF_IF_TYPE_0) &&
3326             mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
3327                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3328                                  "2018 REG_VFI mbxStatus error x%x "
3329                                  "HBA state x%x\n",
3330                                  mboxq->u.mb.mbxStatus, vport->port_state);
3331                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3332                         /* FLOGI failed, use loop map to make discovery list */
3333                         lpfc_disc_list_loopmap(vport);
3334                         /* Start discovery */
3335                         lpfc_disc_start(vport);
3336                         goto out_free_mem;
3337                 }
3338                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3339                 goto out_free_mem;
3340         }
3341
3342         /* If the VFI is already registered, there is nothing else to do
3343          * Unless this was a VFI update and we are in PT2PT mode, then
3344          * we should drop through to set the port state to ready.
3345          */
3346         if (vport->fc_flag & FC_VFI_REGISTERED)
3347                 if (!(phba->sli_rev == LPFC_SLI_REV4 &&
3348                       vport->fc_flag & FC_PT2PT))
3349                         goto out_free_mem;
3350
3351         /* The VPI is implicitly registered when the VFI is registered */
3352         spin_lock_irq(shost->host_lock);
3353         vport->vpi_state |= LPFC_VPI_REGISTERED;
3354         vport->fc_flag |= FC_VFI_REGISTERED;
3355         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3356         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
3357         spin_unlock_irq(shost->host_lock);
3358
3359         /* In case SLI4 FC loopback test, we are ready */
3360         if ((phba->sli_rev == LPFC_SLI_REV4) &&
3361             (phba->link_flag & LS_LOOPBACK_MODE)) {
3362                 phba->link_state = LPFC_HBA_READY;
3363                 goto out_free_mem;
3364         }
3365
3366         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3367                          "3313 cmpl reg vfi  port_state:%x fc_flag:%x myDid:%x "
3368                          "alpacnt:%d LinkState:%x topology:%x\n",
3369                          vport->port_state, vport->fc_flag, vport->fc_myDID,
3370                          vport->phba->alpa_map[0],
3371                          phba->link_state, phba->fc_topology);
3372
3373         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3374                 /*
3375                  * For private loop or for NPort pt2pt,
3376                  * just start discovery and we are done.
3377                  */
3378                 if ((vport->fc_flag & FC_PT2PT) ||
3379                     ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) &&
3380                     !(vport->fc_flag & FC_PUBLIC_LOOP))) {
3381
3382                         /* Use loop map to make discovery list */
3383                         lpfc_disc_list_loopmap(vport);
3384                         /* Start discovery */
3385                         if (vport->fc_flag & FC_PT2PT)
3386                                 vport->port_state = LPFC_VPORT_READY;
3387                         else
3388                                 lpfc_disc_start(vport);
3389                 } else {
3390                         lpfc_start_fdiscs(phba);
3391                         lpfc_do_scr_ns_plogi(phba, vport);
3392                 }
3393         }
3394
3395 out_free_mem:
3396         mempool_free(mboxq, phba->mbox_mem_pool);
3397         if (dmabuf) {
3398                 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
3399                 kfree(dmabuf);
3400         }
3401         return;
3402 }
3403
3404 static void
3405 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3406 {
3407         MAILBOX_t *mb = &pmb->u.mb;
3408         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3409         struct lpfc_vport  *vport = pmb->vport;
3410         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3411         struct serv_parm *sp = &vport->fc_sparam;
3412         uint32_t ed_tov;
3413
3414         /* Check for error */
3415         if (mb->mbxStatus) {
3416                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
3417                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3418                                  "0319 READ_SPARAM mbxStatus error x%x "
3419                                  "hba state x%x>\n",
3420                                  mb->mbxStatus, vport->port_state);
3421                 lpfc_linkdown(phba);
3422                 goto out;
3423         }
3424
3425         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
3426                sizeof (struct serv_parm));
3427
3428         ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
3429         if (sp->cmn.edtovResolution)    /* E_D_TOV ticks are in nanoseconds */
3430                 ed_tov = (ed_tov + 999999) / 1000000;
3431
3432         phba->fc_edtov = ed_tov;
3433         phba->fc_ratov = (2 * ed_tov) / 1000;
3434         if (phba->fc_ratov < FF_DEF_RATOV) {
3435                 /* RA_TOV should be atleast 10sec for initial flogi */
3436                 phba->fc_ratov = FF_DEF_RATOV;
3437         }
3438
3439         lpfc_update_vport_wwn(vport);
3440         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
3441         if (vport->port_type == LPFC_PHYSICAL_PORT) {
3442                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
3443                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
3444         }
3445
3446         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3447         kfree(mp);
3448         mempool_free(pmb, phba->mbox_mem_pool);
3449
3450         /* Check if sending the FLOGI is being deferred to after we get
3451          * up to date CSPs from MBX_READ_SPARAM.
3452          */
3453         if (phba->hba_flag & HBA_DEFER_FLOGI) {
3454                 lpfc_initial_flogi(vport);
3455                 phba->hba_flag &= ~HBA_DEFER_FLOGI;
3456         }
3457         return;
3458
3459 out:
3460         pmb->ctx_buf = NULL;
3461         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3462         kfree(mp);
3463         lpfc_issue_clear_la(phba, vport);
3464         mempool_free(pmb, phba->mbox_mem_pool);
3465         return;
3466 }
3467
3468 static void
3469 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
3470 {
3471         struct lpfc_vport *vport = phba->pport;
3472         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
3473         struct Scsi_Host *shost;
3474         int i;
3475         struct lpfc_dmabuf *mp;
3476         int rc;
3477         struct fcf_record *fcf_record;
3478         uint32_t fc_flags = 0;
3479         unsigned long iflags;
3480
3481         spin_lock_irqsave(&phba->hbalock, iflags);
3482         phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la);
3483
3484         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3485                 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) {
3486                 case LPFC_LINK_SPEED_1GHZ:
3487                 case LPFC_LINK_SPEED_2GHZ:
3488                 case LPFC_LINK_SPEED_4GHZ:
3489                 case LPFC_LINK_SPEED_8GHZ:
3490                 case LPFC_LINK_SPEED_10GHZ:
3491                 case LPFC_LINK_SPEED_16GHZ:
3492                 case LPFC_LINK_SPEED_32GHZ:
3493                 case LPFC_LINK_SPEED_64GHZ:
3494                 case LPFC_LINK_SPEED_128GHZ:
3495                 case LPFC_LINK_SPEED_256GHZ:
3496                         break;
3497                 default:
3498                         phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN;
3499                         break;
3500                 }
3501         }
3502
3503         if (phba->fc_topology &&
3504             phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) {
3505                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
3506                                 "3314 Toplogy changed was 0x%x is 0x%x\n",
3507                                 phba->fc_topology,
3508                                 bf_get(lpfc_mbx_read_top_topology, la));
3509                 phba->fc_topology_changed = 1;
3510         }
3511
3512         phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la);
3513         phba->link_flag &= ~(LS_NPIV_FAB_SUPPORTED | LS_CT_VEN_RPA);
3514
3515         shost = lpfc_shost_from_vport(vport);
3516         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3517                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
3518
3519                 /* if npiv is enabled and this adapter supports npiv log
3520                  * a message that npiv is not supported in this topology
3521                  */
3522                 if (phba->cfg_enable_npiv && phba->max_vpi)
3523                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3524                                 "1309 Link Up Event npiv not supported in loop "
3525                                 "topology\n");
3526                                 /* Get Loop Map information */
3527                 if (bf_get(lpfc_mbx_read_top_il, la))
3528                         fc_flags |= FC_LBIT;
3529
3530                 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la);
3531                 i = la->lilpBde64.tus.f.bdeSize;
3532
3533                 if (i == 0) {
3534                         phba->alpa_map[0] = 0;
3535                 } else {
3536                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
3537                                 int numalpa, j, k;
3538                                 union {
3539                                         uint8_t pamap[16];
3540                                         struct {
3541                                                 uint32_t wd1;
3542                                                 uint32_t wd2;
3543                                                 uint32_t wd3;
3544                                                 uint32_t wd4;
3545                                         } pa;
3546                                 } un;
3547                                 numalpa = phba->alpa_map[0];
3548                                 j = 0;
3549                                 while (j < numalpa) {
3550                                         memset(un.pamap, 0, 16);
3551                                         for (k = 1; j < numalpa; k++) {
3552                                                 un.pamap[k - 1] =
3553                                                         phba->alpa_map[j + 1];
3554                                                 j++;
3555                                                 if (k == 16)
3556                                                         break;
3557                                         }
3558                                         /* Link Up Event ALPA map */
3559                                         lpfc_printf_log(phba,
3560                                                         KERN_WARNING,
3561                                                         LOG_LINK_EVENT,
3562                                                         "1304 Link Up Event "
3563                                                         "ALPA map Data: x%x "
3564                                                         "x%x x%x x%x\n",
3565                                                         un.pa.wd1, un.pa.wd2,
3566                                                         un.pa.wd3, un.pa.wd4);
3567                                 }
3568                         }
3569                 }
3570         } else {
3571                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
3572                         if (phba->max_vpi && phba->cfg_enable_npiv &&
3573                            (phba->sli_rev >= LPFC_SLI_REV3))
3574                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
3575                 }
3576                 vport->fc_myDID = phba->fc_pref_DID;
3577                 fc_flags |= FC_LBIT;
3578         }
3579         spin_unlock_irqrestore(&phba->hbalock, iflags);
3580
3581         if (fc_flags) {
3582                 spin_lock_irqsave(shost->host_lock, iflags);
3583                 vport->fc_flag |= fc_flags;
3584                 spin_unlock_irqrestore(shost->host_lock, iflags);
3585         }
3586
3587         lpfc_linkup(phba);
3588         sparam_mbox = NULL;
3589
3590         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3591         if (!sparam_mbox)
3592                 goto out;
3593
3594         rc = lpfc_read_sparam(phba, sparam_mbox, 0);
3595         if (rc) {
3596                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3597                 goto out;
3598         }
3599         sparam_mbox->vport = vport;
3600         sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
3601         rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
3602         if (rc == MBX_NOT_FINISHED) {
3603                 mp = (struct lpfc_dmabuf *)sparam_mbox->ctx_buf;
3604                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3605                 kfree(mp);
3606                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3607                 goto out;
3608         }
3609
3610         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3611                 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3612                 if (!cfglink_mbox)
3613                         goto out;
3614                 vport->port_state = LPFC_LOCAL_CFG_LINK;
3615                 lpfc_config_link(phba, cfglink_mbox);
3616                 cfglink_mbox->vport = vport;
3617                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
3618                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
3619                 if (rc == MBX_NOT_FINISHED) {
3620                         mempool_free(cfglink_mbox, phba->mbox_mem_pool);
3621                         goto out;
3622                 }
3623         } else {
3624                 vport->port_state = LPFC_VPORT_UNKNOWN;
3625                 /*
3626                  * Add the driver's default FCF record at FCF index 0 now. This
3627                  * is phase 1 implementation that support FCF index 0 and driver
3628                  * defaults.
3629                  */
3630                 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
3631                         fcf_record = kzalloc(sizeof(struct fcf_record),
3632                                         GFP_KERNEL);
3633                         if (unlikely(!fcf_record)) {
3634                                 lpfc_printf_log(phba, KERN_ERR,
3635                                         LOG_TRACE_EVENT,
3636                                         "2554 Could not allocate memory for "
3637                                         "fcf record\n");
3638                                 rc = -ENODEV;
3639                                 goto out;
3640                         }
3641
3642                         lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
3643                                                 LPFC_FCOE_FCF_DEF_INDEX);
3644                         rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
3645                         if (unlikely(rc)) {
3646                                 lpfc_printf_log(phba, KERN_ERR,
3647                                         LOG_TRACE_EVENT,
3648                                         "2013 Could not manually add FCF "
3649                                         "record 0, status %d\n", rc);
3650                                 rc = -ENODEV;
3651                                 kfree(fcf_record);
3652                                 goto out;
3653                         }
3654                         kfree(fcf_record);
3655                 }
3656                 /*
3657                  * The driver is expected to do FIP/FCF. Call the port
3658                  * and get the FCF Table.
3659                  */
3660                 spin_lock_irqsave(&phba->hbalock, iflags);
3661                 if (phba->hba_flag & FCF_TS_INPROG) {
3662                         spin_unlock_irqrestore(&phba->hbalock, iflags);
3663                         return;
3664                 }
3665                 /* This is the initial FCF discovery scan */
3666                 phba->fcf.fcf_flag |= FCF_INIT_DISC;
3667                 spin_unlock_irqrestore(&phba->hbalock, iflags);
3668                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3669                                 "2778 Start FCF table scan at linkup\n");
3670                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
3671                                                      LPFC_FCOE_FCF_GET_FIRST);
3672                 if (rc) {
3673                         spin_lock_irqsave(&phba->hbalock, iflags);
3674                         phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
3675                         spin_unlock_irqrestore(&phba->hbalock, iflags);
3676                         goto out;
3677                 }
3678                 /* Reset FCF roundrobin bmask for new discovery */
3679                 lpfc_sli4_clear_fcf_rr_bmask(phba);
3680         }
3681
3682         /* Prepare for LINK up registrations */
3683         memset(phba->os_host_name, 0, sizeof(phba->os_host_name));
3684         scnprintf(phba->os_host_name, sizeof(phba->os_host_name), "%s",
3685                   init_utsname()->nodename);
3686         return;
3687 out:
3688         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3689         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3690                          "0263 Discovery Mailbox error: state: 0x%x : x%px x%px\n",
3691                          vport->port_state, sparam_mbox, cfglink_mbox);
3692         lpfc_issue_clear_la(phba, vport);
3693         return;
3694 }
3695
3696 static void
3697 lpfc_enable_la(struct lpfc_hba *phba)
3698 {
3699         uint32_t control;
3700         struct lpfc_sli *psli = &phba->sli;
3701         spin_lock_irq(&phba->hbalock);
3702         psli->sli_flag |= LPFC_PROCESS_LA;
3703         if (phba->sli_rev <= LPFC_SLI_REV3) {
3704                 control = readl(phba->HCregaddr);
3705                 control |= HC_LAINT_ENA;
3706                 writel(control, phba->HCregaddr);
3707                 readl(phba->HCregaddr); /* flush */
3708         }
3709         spin_unlock_irq(&phba->hbalock);
3710 }
3711
3712 static void
3713 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
3714 {
3715         lpfc_linkdown(phba);
3716         lpfc_enable_la(phba);
3717         lpfc_unregister_unused_fcf(phba);
3718         /* turn on Link Attention interrupts - no CLEAR_LA needed */
3719 }
3720
3721
3722 /*
3723  * This routine handles processing a READ_TOPOLOGY mailbox
3724  * command upon completion. It is setup in the LPFC_MBOXQ
3725  * as the completion routine when the command is
3726  * handed off to the SLI layer. SLI4 only.
3727  */
3728 void
3729 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3730 {
3731         struct lpfc_vport *vport = pmb->vport;
3732         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3733         struct lpfc_mbx_read_top *la;
3734         struct lpfc_sli_ring *pring;
3735         MAILBOX_t *mb = &pmb->u.mb;
3736         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
3737         uint8_t attn_type;
3738         unsigned long iflags;
3739
3740         /* Unblock ELS traffic */
3741         pring = lpfc_phba_elsring(phba);
3742         if (pring)
3743                 pring->flag &= ~LPFC_STOP_IOCB_EVENT;
3744
3745         /* Check for error */
3746         if (mb->mbxStatus) {
3747                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3748                                 "1307 READ_LA mbox error x%x state x%x\n",
3749                                 mb->mbxStatus, vport->port_state);
3750                 lpfc_mbx_issue_link_down(phba);
3751                 phba->link_state = LPFC_HBA_ERROR;
3752                 goto lpfc_mbx_cmpl_read_topology_free_mbuf;
3753         }
3754
3755         la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
3756         attn_type = bf_get(lpfc_mbx_read_top_att_type, la);
3757
3758         memcpy(&phba->alpa_map[0], mp->virt, 128);
3759
3760         spin_lock_irqsave(shost->host_lock, iflags);
3761         if (bf_get(lpfc_mbx_read_top_pb, la))
3762                 vport->fc_flag |= FC_BYPASSED_MODE;
3763         else
3764                 vport->fc_flag &= ~FC_BYPASSED_MODE;
3765         spin_unlock_irqrestore(shost->host_lock, iflags);
3766
3767         if (phba->fc_eventTag <= la->eventTag) {
3768                 phba->fc_stat.LinkMultiEvent++;
3769                 if (attn_type == LPFC_ATT_LINK_UP)
3770                         if (phba->fc_eventTag != 0)
3771                                 lpfc_linkdown(phba);
3772         }
3773
3774         phba->fc_eventTag = la->eventTag;
3775         if (phba->sli_rev < LPFC_SLI_REV4) {
3776                 spin_lock_irqsave(&phba->hbalock, iflags);
3777                 if (bf_get(lpfc_mbx_read_top_mm, la))
3778                         phba->sli.sli_flag |= LPFC_MENLO_MAINT;
3779                 else
3780                         phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
3781                 spin_unlock_irqrestore(&phba->hbalock, iflags);
3782         }
3783
3784         phba->link_events++;
3785         if ((attn_type == LPFC_ATT_LINK_UP) &&
3786             !(phba->sli.sli_flag & LPFC_MENLO_MAINT)) {
3787                 phba->fc_stat.LinkUp++;
3788                 if (phba->link_flag & LS_LOOPBACK_MODE) {
3789                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3790                                         "1306 Link Up Event in loop back mode "
3791                                         "x%x received Data: x%x x%x x%x x%x\n",
3792                                         la->eventTag, phba->fc_eventTag,
3793                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3794                                                la),
3795                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3796                                         phba->alpa_map[0]);
3797                 } else {
3798                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3799                                         "1303 Link Up Event x%x received "
3800                                         "Data: x%x x%x x%x x%x x%x x%x %d\n",
3801                                         la->eventTag, phba->fc_eventTag,
3802                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3803                                                la),
3804                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3805                                         phba->alpa_map[0],
3806                                         bf_get(lpfc_mbx_read_top_mm, la),
3807                                         bf_get(lpfc_mbx_read_top_fa, la),
3808                                         phba->wait_4_mlo_maint_flg);
3809                 }
3810                 lpfc_mbx_process_link_up(phba, la);
3811
3812                 if (phba->cmf_active_mode != LPFC_CFG_OFF)
3813                         lpfc_cmf_signal_init(phba);
3814
3815         } else if (attn_type == LPFC_ATT_LINK_DOWN ||
3816                    attn_type == LPFC_ATT_UNEXP_WWPN) {
3817                 phba->fc_stat.LinkDown++;
3818                 if (phba->link_flag & LS_LOOPBACK_MODE)
3819                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3820                                 "1308 Link Down Event in loop back mode "
3821                                 "x%x received "
3822                                 "Data: x%x x%x x%x\n",
3823                                 la->eventTag, phba->fc_eventTag,
3824                                 phba->pport->port_state, vport->fc_flag);
3825                 else if (attn_type == LPFC_ATT_UNEXP_WWPN)
3826                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3827                                 "1313 Link Down Unexpected FA WWPN Event x%x "
3828                                 "received Data: x%x x%x x%x x%x x%x\n",
3829                                 la->eventTag, phba->fc_eventTag,
3830                                 phba->pport->port_state, vport->fc_flag,
3831                                 bf_get(lpfc_mbx_read_top_mm, la),
3832                                 bf_get(lpfc_mbx_read_top_fa, la));
3833                 else
3834                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3835                                 "1305 Link Down Event x%x received "
3836                                 "Data: x%x x%x x%x x%x x%x\n",
3837                                 la->eventTag, phba->fc_eventTag,
3838                                 phba->pport->port_state, vport->fc_flag,
3839                                 bf_get(lpfc_mbx_read_top_mm, la),
3840                                 bf_get(lpfc_mbx_read_top_fa, la));
3841                 lpfc_mbx_issue_link_down(phba);
3842         }
3843         if (phba->sli.sli_flag & LPFC_MENLO_MAINT &&
3844             attn_type == LPFC_ATT_LINK_UP) {
3845                 if (phba->link_state != LPFC_LINK_DOWN) {
3846                         phba->fc_stat.LinkDown++;
3847                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3848                                 "1312 Link Down Event x%x received "
3849                                 "Data: x%x x%x x%x\n",
3850                                 la->eventTag, phba->fc_eventTag,
3851                                 phba->pport->port_state, vport->fc_flag);
3852                         lpfc_mbx_issue_link_down(phba);
3853                 } else
3854                         lpfc_enable_la(phba);
3855
3856                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3857                                 "1310 Menlo Maint Mode Link up Event x%x rcvd "
3858                                 "Data: x%x x%x x%x\n",
3859                                 la->eventTag, phba->fc_eventTag,
3860                                 phba->pport->port_state, vport->fc_flag);
3861                 /*
3862                  * The cmnd that triggered this will be waiting for this
3863                  * signal.
3864                  */
3865                 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
3866                 if (phba->wait_4_mlo_maint_flg) {
3867                         phba->wait_4_mlo_maint_flg = 0;
3868                         wake_up_interruptible(&phba->wait_4_mlo_m_q);
3869                 }
3870         }
3871
3872         if ((phba->sli_rev < LPFC_SLI_REV4) &&
3873             bf_get(lpfc_mbx_read_top_fa, la)) {
3874                 if (phba->sli.sli_flag & LPFC_MENLO_MAINT)
3875                         lpfc_issue_clear_la(phba, vport);
3876                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3877                                 "1311 fa %d\n",
3878                                 bf_get(lpfc_mbx_read_top_fa, la));
3879         }
3880
3881 lpfc_mbx_cmpl_read_topology_free_mbuf:
3882         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3883         kfree(mp);
3884         mempool_free(pmb, phba->mbox_mem_pool);
3885         return;
3886 }
3887
3888 /*
3889  * This routine handles processing a REG_LOGIN mailbox
3890  * command upon completion. It is setup in the LPFC_MBOXQ
3891  * as the completion routine when the command is
3892  * handed off to the SLI layer.
3893  */
3894 void
3895 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3896 {
3897         struct lpfc_vport  *vport = pmb->vport;
3898         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
3899         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
3900
3901         pmb->ctx_buf = NULL;
3902         pmb->ctx_ndlp = NULL;
3903
3904         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI | LOG_NODE | LOG_DISCOVERY,
3905                          "0002 rpi:%x DID:%x flg:%x %d x%px\n",
3906                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
3907                          kref_read(&ndlp->kref),
3908                          ndlp);
3909         if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
3910                 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
3911
3912         if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL ||
3913             ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
3914                 /* We rcvd a rscn after issuing this
3915                  * mbox reg login, we may have cycled
3916                  * back through the state and be
3917                  * back at reg login state so this
3918                  * mbox needs to be ignored becase
3919                  * there is another reg login in
3920                  * process.
3921                  */
3922                 spin_lock_irq(&ndlp->lock);
3923                 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
3924                 spin_unlock_irq(&ndlp->lock);
3925
3926                 /*
3927                  * We cannot leave the RPI registered because
3928                  * if we go thru discovery again for this ndlp
3929                  * a subsequent REG_RPI will fail.
3930                  */
3931                 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3932                 lpfc_unreg_rpi(vport, ndlp);
3933         }
3934
3935         /* Call state machine */
3936         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
3937
3938         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3939         kfree(mp);
3940         mempool_free(pmb, phba->mbox_mem_pool);
3941         /* decrement the node reference count held for this callback
3942          * function.
3943          */
3944         lpfc_nlp_put(ndlp);
3945
3946         return;
3947 }
3948
3949 static void
3950 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3951 {
3952         MAILBOX_t *mb = &pmb->u.mb;
3953         struct lpfc_vport *vport = pmb->vport;
3954         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3955
3956         switch (mb->mbxStatus) {
3957         case 0x0011:
3958         case 0x0020:
3959                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3960                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
3961                                  mb->mbxStatus);
3962                 break;
3963         /* If VPI is busy, reset the HBA */
3964         case 0x9700:
3965                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3966                         "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n",
3967                         vport->vpi, mb->mbxStatus);
3968                 if (!(phba->pport->load_flag & FC_UNLOADING))
3969                         lpfc_workq_post_event(phba, NULL, NULL,
3970                                 LPFC_EVT_RESET_HBA);
3971         }
3972         spin_lock_irq(shost->host_lock);
3973         vport->vpi_state &= ~LPFC_VPI_REGISTERED;
3974         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3975         spin_unlock_irq(shost->host_lock);
3976         mempool_free(pmb, phba->mbox_mem_pool);
3977         lpfc_cleanup_vports_rrqs(vport, NULL);
3978         /*
3979          * This shost reference might have been taken at the beginning of
3980          * lpfc_vport_delete()
3981          */
3982         if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
3983                 scsi_host_put(shost);
3984 }
3985
3986 int
3987 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
3988 {
3989         struct lpfc_hba  *phba = vport->phba;
3990         LPFC_MBOXQ_t *mbox;
3991         int rc;
3992
3993         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3994         if (!mbox)
3995                 return 1;
3996
3997         lpfc_unreg_vpi(phba, vport->vpi, mbox);
3998         mbox->vport = vport;
3999         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
4000         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4001         if (rc == MBX_NOT_FINISHED) {
4002                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4003                                  "1800 Could not issue unreg_vpi\n");
4004                 mempool_free(mbox, phba->mbox_mem_pool);
4005                 return rc;
4006         }
4007         return 0;
4008 }
4009
4010 static void
4011 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4012 {
4013         struct lpfc_vport *vport = pmb->vport;
4014         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
4015         MAILBOX_t *mb = &pmb->u.mb;
4016
4017         switch (mb->mbxStatus) {
4018         case 0x0011:
4019         case 0x9601:
4020         case 0x9602:
4021                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4022                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
4023                                  mb->mbxStatus);
4024                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
4025                 spin_lock_irq(shost->host_lock);
4026                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
4027                 spin_unlock_irq(shost->host_lock);
4028                 vport->fc_myDID = 0;
4029
4030                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4031                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
4032                         if (phba->nvmet_support)
4033                                 lpfc_nvmet_update_targetport(phba);
4034                         else
4035                                 lpfc_nvme_update_localport(vport);
4036                 }
4037                 goto out;
4038         }
4039
4040         spin_lock_irq(shost->host_lock);
4041         vport->vpi_state |= LPFC_VPI_REGISTERED;
4042         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
4043         spin_unlock_irq(shost->host_lock);
4044         vport->num_disc_nodes = 0;
4045         /* go thru NPR list and issue ELS PLOGIs */
4046         if (vport->fc_npr_cnt)
4047                 lpfc_els_disc_plogi(vport);
4048
4049         if (!vport->num_disc_nodes) {
4050                 spin_lock_irq(shost->host_lock);
4051                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
4052                 spin_unlock_irq(shost->host_lock);
4053                 lpfc_can_disctmo(vport);
4054         }
4055         vport->port_state = LPFC_VPORT_READY;
4056
4057 out:
4058         mempool_free(pmb, phba->mbox_mem_pool);
4059         return;
4060 }
4061
4062 /**
4063  * lpfc_create_static_vport - Read HBA config region to create static vports.
4064  * @phba: pointer to lpfc hba data structure.
4065  *
4066  * This routine issue a DUMP mailbox command for config region 22 to get
4067  * the list of static vports to be created. The function create vports
4068  * based on the information returned from the HBA.
4069  **/
4070 void
4071 lpfc_create_static_vport(struct lpfc_hba *phba)
4072 {
4073         LPFC_MBOXQ_t *pmb = NULL;
4074         MAILBOX_t *mb;
4075         struct static_vport_info *vport_info;
4076         int mbx_wait_rc = 0, i;
4077         struct fc_vport_identifiers vport_id;
4078         struct fc_vport *new_fc_vport;
4079         struct Scsi_Host *shost;
4080         struct lpfc_vport *vport;
4081         uint16_t offset = 0;
4082         uint8_t *vport_buff;
4083         struct lpfc_dmabuf *mp;
4084         uint32_t byte_count = 0;
4085
4086         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4087         if (!pmb) {
4088                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4089                                 "0542 lpfc_create_static_vport failed to"
4090                                 " allocate mailbox memory\n");
4091                 return;
4092         }
4093         memset(pmb, 0, sizeof(LPFC_MBOXQ_t));
4094         mb = &pmb->u.mb;
4095
4096         vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
4097         if (!vport_info) {
4098                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4099                                 "0543 lpfc_create_static_vport failed to"
4100                                 " allocate vport_info\n");
4101                 mempool_free(pmb, phba->mbox_mem_pool);
4102                 return;
4103         }
4104
4105         vport_buff = (uint8_t *) vport_info;
4106         do {
4107                 /* free dma buffer from previous round */
4108                 if (pmb->ctx_buf) {
4109                         mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
4110                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
4111                         kfree(mp);
4112                 }
4113                 if (lpfc_dump_static_vport(phba, pmb, offset))
4114                         goto out;
4115
4116                 pmb->vport = phba->pport;
4117                 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb,
4118                                                         LPFC_MBOX_TMO);
4119
4120                 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) {
4121                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4122                                 "0544 lpfc_create_static_vport failed to"
4123                                 " issue dump mailbox command ret 0x%x "
4124                                 "status 0x%x\n",
4125                                 mbx_wait_rc, mb->mbxStatus);
4126                         goto out;
4127                 }
4128
4129                 if (phba->sli_rev == LPFC_SLI_REV4) {
4130                         byte_count = pmb->u.mqe.un.mb_words[5];
4131                         mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
4132                         if (byte_count > sizeof(struct static_vport_info) -
4133                                         offset)
4134                                 byte_count = sizeof(struct static_vport_info)
4135                                         - offset;
4136                         memcpy(vport_buff + offset, mp->virt, byte_count);
4137                         offset += byte_count;
4138                 } else {
4139                         if (mb->un.varDmp.word_cnt >
4140                                 sizeof(struct static_vport_info) - offset)
4141                                 mb->un.varDmp.word_cnt =
4142                                         sizeof(struct static_vport_info)
4143                                                 - offset;
4144                         byte_count = mb->un.varDmp.word_cnt;
4145                         lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
4146                                 vport_buff + offset,
4147                                 byte_count);
4148
4149                         offset += byte_count;
4150                 }
4151
4152         } while (byte_count &&
4153                 offset < sizeof(struct static_vport_info));
4154
4155
4156         if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
4157                 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
4158                         != VPORT_INFO_REV)) {
4159                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4160                                 "0545 lpfc_create_static_vport bad"
4161                                 " information header 0x%x 0x%x\n",
4162                                 le32_to_cpu(vport_info->signature),
4163                                 le32_to_cpu(vport_info->rev) &
4164                                 VPORT_INFO_REV_MASK);
4165
4166                 goto out;
4167         }
4168
4169         shost = lpfc_shost_from_vport(phba->pport);
4170
4171         for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
4172                 memset(&vport_id, 0, sizeof(vport_id));
4173                 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
4174                 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
4175                 if (!vport_id.port_name || !vport_id.node_name)
4176                         continue;
4177
4178                 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
4179                 vport_id.vport_type = FC_PORTTYPE_NPIV;
4180                 vport_id.disable = false;
4181                 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
4182
4183                 if (!new_fc_vport) {
4184                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4185                                 "0546 lpfc_create_static_vport failed to"
4186                                 " create vport\n");
4187                         continue;
4188                 }
4189
4190                 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
4191                 vport->vport_flag |= STATIC_VPORT;
4192         }
4193
4194 out:
4195         kfree(vport_info);
4196         if (mbx_wait_rc != MBX_TIMEOUT) {
4197                 if (pmb->ctx_buf) {
4198                         mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
4199                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
4200                         kfree(mp);
4201                 }
4202                 mempool_free(pmb, phba->mbox_mem_pool);
4203         }
4204
4205         return;
4206 }
4207
4208 /*
4209  * This routine handles processing a Fabric REG_LOGIN mailbox
4210  * command upon completion. It is setup in the LPFC_MBOXQ
4211  * as the completion routine when the command is
4212  * handed off to the SLI layer.
4213  */
4214 void
4215 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4216 {
4217         struct lpfc_vport *vport = pmb->vport;
4218         MAILBOX_t *mb = &pmb->u.mb;
4219         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
4220         struct lpfc_nodelist *ndlp;
4221         struct Scsi_Host *shost;
4222
4223         ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4224         pmb->ctx_ndlp = NULL;
4225         pmb->ctx_buf = NULL;
4226
4227         if (mb->mbxStatus) {
4228                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4229                                  "0258 Register Fabric login error: 0x%x\n",
4230                                  mb->mbxStatus);
4231                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
4232                 kfree(mp);
4233                 mempool_free(pmb, phba->mbox_mem_pool);
4234
4235                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4236                         /* FLOGI failed, use loop map to make discovery list */
4237                         lpfc_disc_list_loopmap(vport);
4238
4239                         /* Start discovery */
4240                         lpfc_disc_start(vport);
4241                         /* Decrement the reference count to ndlp after the
4242                          * reference to the ndlp are done.
4243                          */
4244                         lpfc_nlp_put(ndlp);
4245                         return;
4246                 }
4247
4248                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
4249                 /* Decrement the reference count to ndlp after the reference
4250                  * to the ndlp are done.
4251                  */
4252                 lpfc_nlp_put(ndlp);
4253                 return;
4254         }
4255
4256         if (phba->sli_rev < LPFC_SLI_REV4)
4257                 ndlp->nlp_rpi = mb->un.varWords[0];
4258         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4259         ndlp->nlp_type |= NLP_FABRIC;
4260         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4261
4262         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
4263                 /* when physical port receive logo donot start
4264                  * vport discovery */
4265                 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
4266                         lpfc_start_fdiscs(phba);
4267                 else {
4268                         shost = lpfc_shost_from_vport(vport);
4269                         spin_lock_irq(shost->host_lock);
4270                         vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ;
4271                         spin_unlock_irq(shost->host_lock);
4272                 }
4273                 lpfc_do_scr_ns_plogi(phba, vport);
4274         }
4275
4276         lpfc_mbuf_free(phba, mp->virt, mp->phys);
4277         kfree(mp);
4278         mempool_free(pmb, phba->mbox_mem_pool);
4279
4280         /* Drop the reference count from the mbox at the end after
4281          * all the current reference to the ndlp have been done.
4282          */
4283         lpfc_nlp_put(ndlp);
4284         return;
4285 }
4286
4287  /*
4288   * This routine will issue a GID_FT for each FC4 Type supported
4289   * by the driver. ALL GID_FTs must complete before discovery is started.
4290   */
4291 int
4292 lpfc_issue_gidft(struct lpfc_vport *vport)
4293 {
4294         /* Good status, issue CT Request to NameServer */
4295         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4296             (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) {
4297                 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_FCP)) {
4298                         /* Cannot issue NameServer FCP Query, so finish up
4299                          * discovery
4300                          */
4301                         lpfc_printf_vlog(vport, KERN_ERR,
4302                                          LOG_TRACE_EVENT,
4303                                          "0604 %s FC TYPE %x %s\n",
4304                                          "Failed to issue GID_FT to ",
4305                                          FC_TYPE_FCP,
4306                                          "Finishing discovery.");
4307                         return 0;
4308                 }
4309                 vport->gidft_inp++;
4310         }
4311
4312         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4313             (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
4314                 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_NVME)) {
4315                         /* Cannot issue NameServer NVME Query, so finish up
4316                          * discovery
4317                          */
4318                         lpfc_printf_vlog(vport, KERN_ERR,
4319                                          LOG_TRACE_EVENT,
4320                                          "0605 %s FC_TYPE %x %s %d\n",
4321                                          "Failed to issue GID_FT to ",
4322                                          FC_TYPE_NVME,
4323                                          "Finishing discovery: gidftinp ",
4324                                          vport->gidft_inp);
4325                         if (vport->gidft_inp == 0)
4326                                 return 0;
4327                 } else
4328                         vport->gidft_inp++;
4329         }
4330         return vport->gidft_inp;
4331 }
4332
4333 /**
4334  * lpfc_issue_gidpt - issue a GID_PT for all N_Ports
4335  * @vport: The virtual port for which this call is being executed.
4336  *
4337  * This routine will issue a GID_PT to get a list of all N_Ports
4338  *
4339  * Return value :
4340  *   0 - Failure to issue a GID_PT
4341  *   1 - GID_PT issued
4342  **/
4343 int
4344 lpfc_issue_gidpt(struct lpfc_vport *vport)
4345 {
4346         /* Good status, issue CT Request to NameServer */
4347         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) {
4348                 /* Cannot issue NameServer FCP Query, so finish up
4349                  * discovery
4350                  */
4351                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4352                                  "0606 %s Port TYPE %x %s\n",
4353                                  "Failed to issue GID_PT to ",
4354                                  GID_PT_N_PORT,
4355                                  "Finishing discovery.");
4356                 return 0;
4357         }
4358         vport->gidft_inp++;
4359         return 1;
4360 }
4361
4362 /*
4363  * This routine handles processing a NameServer REG_LOGIN mailbox
4364  * command upon completion. It is setup in the LPFC_MBOXQ
4365  * as the completion routine when the command is
4366  * handed off to the SLI layer.
4367  */
4368 void
4369 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4370 {
4371         MAILBOX_t *mb = &pmb->u.mb;
4372         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
4373         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4374         struct lpfc_vport *vport = pmb->vport;
4375         int rc;
4376
4377         pmb->ctx_buf = NULL;
4378         pmb->ctx_ndlp = NULL;
4379         vport->gidft_inp = 0;
4380
4381         if (mb->mbxStatus) {
4382                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4383                                  "0260 Register NameServer error: 0x%x\n",
4384                                  mb->mbxStatus);
4385
4386 out:
4387                 /* decrement the node reference count held for this
4388                  * callback function.
4389                  */
4390                 lpfc_nlp_put(ndlp);
4391                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
4392                 kfree(mp);
4393                 mempool_free(pmb, phba->mbox_mem_pool);
4394
4395                 /* If the node is not registered with the scsi or nvme
4396                  * transport, remove the fabric node.  The failed reg_login
4397                  * is terminal.
4398                  */
4399                 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
4400                         spin_lock_irq(&ndlp->lock);
4401                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
4402                         spin_unlock_irq(&ndlp->lock);
4403                         lpfc_nlp_not_used(ndlp);
4404                 }
4405
4406                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4407                         /*
4408                          * RegLogin failed, use loop map to make discovery
4409                          * list
4410                          */
4411                         lpfc_disc_list_loopmap(vport);
4412
4413                         /* Start discovery */
4414                         lpfc_disc_start(vport);
4415                         return;
4416                 }
4417                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
4418                 return;
4419         }
4420
4421         if (phba->sli_rev < LPFC_SLI_REV4)
4422                 ndlp->nlp_rpi = mb->un.varWords[0];
4423         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4424         ndlp->nlp_type |= NLP_FABRIC;
4425         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4426         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
4427                          "0003 rpi:%x DID:%x flg:%x %d x%px\n",
4428                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
4429                          kref_read(&ndlp->kref),
4430                          ndlp);
4431
4432         if (vport->port_state < LPFC_VPORT_READY) {
4433                 /* Link up discovery requires Fabric registration. */
4434                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
4435                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
4436                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
4437                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
4438
4439                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4440                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP))
4441                         lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, FC_TYPE_FCP);
4442
4443                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4444                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME))
4445                         lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0,
4446                                     FC_TYPE_NVME);
4447
4448                 /* Issue SCR just before NameServer GID_FT Query */
4449                 lpfc_issue_els_scr(vport, 0);
4450
4451                 /* Link was bounced or a Fabric LOGO occurred.  Start EDC
4452                  * with initial FW values provided the congestion mode is
4453                  * not off.  Note that signals may or may not be supported
4454                  * by the adapter but FPIN is provided by default for 1
4455                  * or both missing signals support.
4456                  */
4457                 if (phba->cmf_active_mode != LPFC_CFG_OFF) {
4458                         phba->cgn_reg_fpin = phba->cgn_init_reg_fpin;
4459                         phba->cgn_reg_signal = phba->cgn_init_reg_signal;
4460                         rc = lpfc_issue_els_edc(vport, 0);
4461                         lpfc_printf_log(phba, KERN_INFO,
4462                                         LOG_INIT | LOG_ELS | LOG_DISCOVERY,
4463                                         "4220 EDC issue error x%x, Data: x%x\n",
4464                                         rc, phba->cgn_init_reg_signal);
4465                 } else {
4466                         lpfc_issue_els_rdf(vport, 0);
4467                 }
4468         }
4469
4470         vport->fc_ns_retry = 0;
4471         if (lpfc_issue_gidft(vport) == 0)
4472                 goto out;
4473
4474         /*
4475          * At this point in time we may need to wait for multiple
4476          * SLI_CTNS_GID_FT CT commands to complete before we start discovery.
4477          *
4478          * decrement the node reference count held for this
4479          * callback function.
4480          */
4481         lpfc_nlp_put(ndlp);
4482         lpfc_mbuf_free(phba, mp->virt, mp->phys);
4483         kfree(mp);
4484         mempool_free(pmb, phba->mbox_mem_pool);
4485
4486         return;
4487 }
4488
4489 /*
4490  * This routine handles processing a Fabric Controller REG_LOGIN mailbox
4491  * command upon completion. It is setup in the LPFC_MBOXQ
4492  * as the completion routine when the command is handed off to the SLI layer.
4493  */
4494 void
4495 lpfc_mbx_cmpl_fc_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4496 {
4497         struct lpfc_vport *vport = pmb->vport;
4498         MAILBOX_t *mb = &pmb->u.mb;
4499         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
4500         struct lpfc_nodelist *ndlp;
4501
4502         ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4503         pmb->ctx_ndlp = NULL;
4504         pmb->ctx_buf = NULL;
4505
4506         if (mb->mbxStatus) {
4507                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4508                                  "0933 %s: Register FC login error: 0x%x\n",
4509                                  __func__, mb->mbxStatus);
4510                 goto out;
4511         }
4512
4513         lpfc_check_nlp_post_devloss(vport, ndlp);
4514
4515         if (phba->sli_rev < LPFC_SLI_REV4)
4516                 ndlp->nlp_rpi = mb->un.varWords[0];
4517
4518         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4519                          "0934 %s: Complete FC x%x RegLogin rpi x%x ste x%x\n",
4520                          __func__, ndlp->nlp_DID, ndlp->nlp_rpi,
4521                          ndlp->nlp_state);
4522
4523         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4524         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
4525         ndlp->nlp_type |= NLP_FABRIC;
4526         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4527
4528  out:
4529         lpfc_mbuf_free(phba, mp->virt, mp->phys);
4530         kfree(mp);
4531         mempool_free(pmb, phba->mbox_mem_pool);
4532
4533         /* Drop the reference count from the mbox at the end after
4534          * all the current reference to the ndlp have been done.
4535          */
4536         lpfc_nlp_put(ndlp);
4537 }
4538
4539 static void
4540 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4541 {
4542         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4543         struct fc_rport  *rport;
4544         struct lpfc_rport_data *rdata;
4545         struct fc_rport_identifiers rport_ids;
4546         struct lpfc_hba  *phba = vport->phba;
4547         unsigned long flags;
4548
4549         if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4550                 return;
4551
4552         /* Remote port has reappeared. Re-register w/ FC transport */
4553         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
4554         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
4555         rport_ids.port_id = ndlp->nlp_DID;
4556         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
4557
4558
4559         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4560                               "rport add:       did:x%x flg:x%x type x%x",
4561                               ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4562
4563         /* Don't add the remote port if unloading. */
4564         if (vport->load_flag & FC_UNLOADING)
4565                 return;
4566
4567         /*
4568          * Disassociate any older association between this ndlp and rport
4569          */
4570         if (ndlp->rport) {
4571                 rdata = ndlp->rport->dd_data;
4572                 rdata->pnode = NULL;
4573         }
4574
4575         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
4576         if (!rport) {
4577                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
4578                            "Warning: fc_remote_port_add failed\n");
4579                 return;
4580         }
4581
4582         /* Successful port add.  Complete initializing node data */
4583         rport->maxframe_size = ndlp->nlp_maxframe;
4584         rport->supported_classes = ndlp->nlp_class_sup;
4585         rdata = rport->dd_data;
4586         rdata->pnode = lpfc_nlp_get(ndlp);
4587         if (!rdata->pnode) {
4588                 dev_warn(&phba->pcidev->dev,
4589                          "Warning - node ref failed. Unreg rport\n");
4590                 fc_remote_port_delete(rport);
4591                 ndlp->rport = NULL;
4592                 return;
4593         }
4594
4595         spin_lock_irqsave(&ndlp->lock, flags);
4596         ndlp->fc4_xpt_flags |= SCSI_XPT_REGD;
4597         spin_unlock_irqrestore(&ndlp->lock, flags);
4598
4599         if (ndlp->nlp_type & NLP_FCP_TARGET)
4600                 rport_ids.roles |= FC_PORT_ROLE_FCP_TARGET;
4601         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
4602                 rport_ids.roles |= FC_PORT_ROLE_FCP_INITIATOR;
4603         if (ndlp->nlp_type & NLP_NVME_INITIATOR)
4604                 rport_ids.roles |= FC_PORT_ROLE_NVME_INITIATOR;
4605         if (ndlp->nlp_type & NLP_NVME_TARGET)
4606                 rport_ids.roles |= FC_PORT_ROLE_NVME_TARGET;
4607         if (ndlp->nlp_type & NLP_NVME_DISCOVERY)
4608                 rport_ids.roles |= FC_PORT_ROLE_NVME_DISCOVERY;
4609
4610         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
4611                 fc_remote_port_rolechg(rport, rport_ids.roles);
4612
4613         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
4614                          "3183 %s rport x%px DID x%x, role x%x refcnt %d\n",
4615                          __func__, rport, rport->port_id, rport->roles,
4616                          kref_read(&ndlp->kref));
4617
4618         if ((rport->scsi_target_id != -1) &&
4619             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
4620                 ndlp->nlp_sid = rport->scsi_target_id;
4621         }
4622
4623         return;
4624 }
4625
4626 static void
4627 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
4628 {
4629         struct fc_rport *rport = ndlp->rport;
4630         struct lpfc_vport *vport = ndlp->vport;
4631
4632         if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4633                 return;
4634
4635         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4636                 "rport delete:    did:x%x flg:x%x type x%x",
4637                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4638
4639         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4640                          "3184 rport unregister x%06x, rport x%px "
4641                          "xptflg x%x refcnt %d\n",
4642                          ndlp->nlp_DID, rport, ndlp->fc4_xpt_flags,
4643                          kref_read(&ndlp->kref));
4644
4645         fc_remote_port_delete(rport);
4646         lpfc_nlp_put(ndlp);
4647 }
4648
4649 static void
4650 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
4651 {
4652         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4653         unsigned long iflags;
4654
4655         spin_lock_irqsave(shost->host_lock, iflags);
4656         switch (state) {
4657         case NLP_STE_UNUSED_NODE:
4658                 vport->fc_unused_cnt += count;
4659                 break;
4660         case NLP_STE_PLOGI_ISSUE:
4661                 vport->fc_plogi_cnt += count;
4662                 break;
4663         case NLP_STE_ADISC_ISSUE:
4664                 vport->fc_adisc_cnt += count;
4665                 break;
4666         case NLP_STE_REG_LOGIN_ISSUE:
4667                 vport->fc_reglogin_cnt += count;
4668                 break;
4669         case NLP_STE_PRLI_ISSUE:
4670                 vport->fc_prli_cnt += count;
4671                 break;
4672         case NLP_STE_UNMAPPED_NODE:
4673                 vport->fc_unmap_cnt += count;
4674                 break;
4675         case NLP_STE_MAPPED_NODE:
4676                 vport->fc_map_cnt += count;
4677                 break;
4678         case NLP_STE_NPR_NODE:
4679                 if (vport->fc_npr_cnt == 0 && count == -1)
4680                         vport->fc_npr_cnt = 0;
4681                 else
4682                         vport->fc_npr_cnt += count;
4683                 break;
4684         }
4685         spin_unlock_irqrestore(shost->host_lock, iflags);
4686 }
4687
4688 /* Register a node with backend if not already done */
4689 void
4690 lpfc_nlp_reg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4691 {
4692         unsigned long iflags;
4693
4694         lpfc_check_nlp_post_devloss(vport, ndlp);
4695
4696         spin_lock_irqsave(&ndlp->lock, iflags);
4697         if (ndlp->fc4_xpt_flags & NLP_XPT_REGD) {
4698                 /* Already registered with backend, trigger rescan */
4699                 spin_unlock_irqrestore(&ndlp->lock, iflags);
4700
4701                 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD &&
4702                     ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY)) {
4703                         lpfc_nvme_rescan_port(vport, ndlp);
4704                 }
4705                 return;
4706         }
4707
4708         ndlp->fc4_xpt_flags |= NLP_XPT_REGD;
4709         spin_unlock_irqrestore(&ndlp->lock, iflags);
4710
4711         if (lpfc_valid_xpt_node(ndlp)) {
4712                 vport->phba->nport_event_cnt++;
4713                 /*
4714                  * Tell the fc transport about the port, if we haven't
4715                  * already. If we have, and it's a scsi entity, be
4716                  */
4717                 lpfc_register_remote_port(vport, ndlp);
4718         }
4719
4720         /* We are done if we do not have any NVME remote node */
4721         if (!(ndlp->nlp_fc4_type & NLP_FC4_NVME))
4722                 return;
4723
4724         /* Notify the NVME transport of this new rport. */
4725         if (vport->phba->sli_rev >= LPFC_SLI_REV4 &&
4726                         ndlp->nlp_fc4_type & NLP_FC4_NVME) {
4727                 if (vport->phba->nvmet_support == 0) {
4728                         /* Register this rport with the transport.
4729                          * Only NVME Target Rports are registered with
4730                          * the transport.
4731                          */
4732                         if (ndlp->nlp_type & NLP_NVME_TARGET) {
4733                                 vport->phba->nport_event_cnt++;
4734                                 lpfc_nvme_register_port(vport, ndlp);
4735                         }
4736                 } else {
4737                         /* Just take an NDLP ref count since the
4738                          * target does not register rports.
4739                          */
4740                         lpfc_nlp_get(ndlp);
4741                 }
4742         }
4743 }
4744
4745 /* Unregister a node with backend if not already done */
4746 void
4747 lpfc_nlp_unreg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4748 {
4749         unsigned long iflags;
4750
4751         spin_lock_irqsave(&ndlp->lock, iflags);
4752         if (!(ndlp->fc4_xpt_flags & NLP_XPT_REGD)) {
4753                 spin_unlock_irqrestore(&ndlp->lock, iflags);
4754                 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
4755                                  "0999 %s Not regd: ndlp x%px rport x%px DID "
4756                                  "x%x FLG x%x XPT x%x\n",
4757                                   __func__, ndlp, ndlp->rport, ndlp->nlp_DID,
4758                                   ndlp->nlp_flag, ndlp->fc4_xpt_flags);
4759                 return;
4760         }
4761
4762         ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD;
4763         spin_unlock_irqrestore(&ndlp->lock, iflags);
4764
4765         if (ndlp->rport &&
4766             ndlp->fc4_xpt_flags & SCSI_XPT_REGD) {
4767                 vport->phba->nport_event_cnt++;
4768                 lpfc_unregister_remote_port(ndlp);
4769         } else if (!ndlp->rport) {
4770                 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
4771                                  "1999 %s NDLP in devloss x%px DID x%x FLG x%x"
4772                                  " XPT x%x refcnt %d\n",
4773                                  __func__, ndlp, ndlp->nlp_DID, ndlp->nlp_flag,
4774                                  ndlp->fc4_xpt_flags,
4775                                  kref_read(&ndlp->kref));
4776         }
4777
4778         if (ndlp->fc4_xpt_flags & NVME_XPT_REGD) {
4779                 vport->phba->nport_event_cnt++;
4780                 if (vport->phba->nvmet_support == 0) {
4781                         /* Start devloss if target. */
4782                         if (ndlp->nlp_type & NLP_NVME_TARGET)
4783                                 lpfc_nvme_unregister_port(vport, ndlp);
4784                 } else {
4785                         /* NVMET has no upcall. */
4786                         lpfc_nlp_put(ndlp);
4787                 }
4788         }
4789
4790 }
4791
4792 /*
4793  * Adisc state change handling
4794  */
4795 static void
4796 lpfc_handle_adisc_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4797                 int new_state)
4798 {
4799         switch (new_state) {
4800         /*
4801          * Any state to ADISC_ISSUE
4802          * Do nothing, adisc cmpl handling will trigger state changes
4803          */
4804         case NLP_STE_ADISC_ISSUE:
4805                 break;
4806
4807         /*
4808          * ADISC_ISSUE to mapped states
4809          * Trigger a registration with backend, it will be nop if
4810          * already registered
4811          */
4812         case NLP_STE_UNMAPPED_NODE:
4813                 ndlp->nlp_type |= NLP_FC_NODE;
4814                 fallthrough;
4815         case NLP_STE_MAPPED_NODE:
4816                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4817                 lpfc_nlp_reg_node(vport, ndlp);
4818                 break;
4819
4820         /*
4821          * ADISC_ISSUE to non-mapped states
4822          * We are moving from ADISC_ISSUE to a non-mapped state because
4823          * ADISC failed, we would have skipped unregistering with
4824          * backend, attempt it now
4825          */
4826         case NLP_STE_NPR_NODE:
4827                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
4828                 fallthrough;
4829         default:
4830                 lpfc_nlp_unreg_node(vport, ndlp);
4831                 break;
4832         }
4833
4834 }
4835
4836 static void
4837 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4838                        int old_state, int new_state)
4839 {
4840         /* Trap ADISC changes here */
4841         if (new_state == NLP_STE_ADISC_ISSUE ||
4842             old_state == NLP_STE_ADISC_ISSUE) {
4843                 lpfc_handle_adisc_state(vport, ndlp, new_state);
4844                 return;
4845         }
4846
4847         if (new_state == NLP_STE_UNMAPPED_NODE) {
4848                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4849                 ndlp->nlp_type |= NLP_FC_NODE;
4850         }
4851         if (new_state == NLP_STE_MAPPED_NODE)
4852                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4853         if (new_state == NLP_STE_NPR_NODE)
4854                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
4855
4856         /* Reg/Unreg for FCP and NVME Transport interface */
4857         if ((old_state == NLP_STE_MAPPED_NODE ||
4858              old_state == NLP_STE_UNMAPPED_NODE)) {
4859                 /* For nodes marked for ADISC, Handle unreg in ADISC cmpl
4860                  * if linkup. In linkdown do unreg_node
4861                  */
4862                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC) ||
4863                     !lpfc_is_link_up(vport->phba))
4864                         lpfc_nlp_unreg_node(vport, ndlp);
4865         }
4866
4867         if (new_state ==  NLP_STE_MAPPED_NODE ||
4868             new_state == NLP_STE_UNMAPPED_NODE)
4869                 lpfc_nlp_reg_node(vport, ndlp);
4870
4871         if ((new_state ==  NLP_STE_MAPPED_NODE) &&
4872                 (vport->stat_data_enabled)) {
4873                 /*
4874                  * A new target is discovered, if there is no buffer for
4875                  * statistical data collection allocate buffer.
4876                  */
4877                 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
4878                                          sizeof(struct lpfc_scsicmd_bkt),
4879                                          GFP_KERNEL);
4880
4881                 if (!ndlp->lat_data)
4882                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4883                                 "0286 lpfc_nlp_state_cleanup failed to "
4884                                 "allocate statistical data buffer DID "
4885                                 "0x%x\n", ndlp->nlp_DID);
4886         }
4887         /*
4888          * If the node just added to Mapped list was an FCP target,
4889          * but the remote port registration failed or assigned a target
4890          * id outside the presentable range - move the node to the
4891          * Unmapped List.
4892          */
4893         if ((new_state == NLP_STE_MAPPED_NODE) &&
4894             (ndlp->nlp_type & NLP_FCP_TARGET) &&
4895             (!ndlp->rport ||
4896              ndlp->rport->scsi_target_id == -1 ||
4897              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
4898                 spin_lock_irq(&ndlp->lock);
4899                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
4900                 spin_unlock_irq(&ndlp->lock);
4901                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4902         }
4903 }
4904
4905 static char *
4906 lpfc_nlp_state_name(char *buffer, size_t size, int state)
4907 {
4908         static char *states[] = {
4909                 [NLP_STE_UNUSED_NODE] = "UNUSED",
4910                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
4911                 [NLP_STE_ADISC_ISSUE] = "ADISC",
4912                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
4913                 [NLP_STE_PRLI_ISSUE] = "PRLI",
4914                 [NLP_STE_LOGO_ISSUE] = "LOGO",
4915                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
4916                 [NLP_STE_MAPPED_NODE] = "MAPPED",
4917                 [NLP_STE_NPR_NODE] = "NPR",
4918         };
4919
4920         if (state < NLP_STE_MAX_STATE && states[state])
4921                 strlcpy(buffer, states[state], size);
4922         else
4923                 snprintf(buffer, size, "unknown (%d)", state);
4924         return buffer;
4925 }
4926
4927 void
4928 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4929                    int state)
4930 {
4931         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4932         int  old_state = ndlp->nlp_state;
4933         int node_dropped = ndlp->nlp_flag & NLP_DROPPED;
4934         char name1[16], name2[16];
4935
4936         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4937                          "0904 NPort state transition x%06x, %s -> %s\n",
4938                          ndlp->nlp_DID,
4939                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
4940                          lpfc_nlp_state_name(name2, sizeof(name2), state));
4941
4942         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4943                 "node statechg    did:x%x old:%d ste:%d",
4944                 ndlp->nlp_DID, old_state, state);
4945
4946         if (node_dropped && old_state == NLP_STE_UNUSED_NODE &&
4947             state != NLP_STE_UNUSED_NODE) {
4948                 ndlp->nlp_flag &= ~NLP_DROPPED;
4949                 lpfc_nlp_get(ndlp);
4950         }
4951
4952         if (old_state == NLP_STE_NPR_NODE &&
4953             state != NLP_STE_NPR_NODE)
4954                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4955         if (old_state == NLP_STE_UNMAPPED_NODE) {
4956                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
4957                 ndlp->nlp_type &= ~NLP_FC_NODE;
4958         }
4959
4960         if (list_empty(&ndlp->nlp_listp)) {
4961                 spin_lock_irq(shost->host_lock);
4962                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4963                 spin_unlock_irq(shost->host_lock);
4964         } else if (old_state)
4965                 lpfc_nlp_counters(vport, old_state, -1);
4966
4967         ndlp->nlp_state = state;
4968         lpfc_nlp_counters(vport, state, 1);
4969         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
4970 }
4971
4972 void
4973 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4974 {
4975         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4976
4977         if (list_empty(&ndlp->nlp_listp)) {
4978                 spin_lock_irq(shost->host_lock);
4979                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4980                 spin_unlock_irq(shost->host_lock);
4981         }
4982 }
4983
4984 void
4985 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4986 {
4987         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4988
4989         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4990         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4991                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4992         spin_lock_irq(shost->host_lock);
4993         list_del_init(&ndlp->nlp_listp);
4994         spin_unlock_irq(shost->host_lock);
4995         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4996                                 NLP_STE_UNUSED_NODE);
4997 }
4998
4999 /**
5000  * lpfc_initialize_node - Initialize all fields of node object
5001  * @vport: Pointer to Virtual Port object.
5002  * @ndlp: Pointer to FC node object.
5003  * @did: FC_ID of the node.
5004  *
5005  * This function is always called when node object need to be initialized.
5006  * It initializes all the fields of the node object. Although the reference
5007  * to phba from @ndlp can be obtained indirectly through it's reference to
5008  * @vport, a direct reference to phba is taken here by @ndlp. This is due
5009  * to the life-span of the @ndlp might go beyond the existence of @vport as
5010  * the final release of ndlp is determined by its reference count. And, the
5011  * operation on @ndlp needs the reference to phba.
5012  **/
5013 static inline void
5014 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
5015         uint32_t did)
5016 {
5017         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
5018         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
5019         timer_setup(&ndlp->nlp_delayfunc, lpfc_els_retry_delay, 0);
5020         INIT_LIST_HEAD(&ndlp->recovery_evt.evt_listp);
5021
5022         ndlp->nlp_DID = did;
5023         ndlp->vport = vport;
5024         ndlp->phba = vport->phba;
5025         ndlp->nlp_sid = NLP_NO_SID;
5026         ndlp->nlp_fc4_type = NLP_FC4_NONE;
5027         kref_init(&ndlp->kref);
5028         atomic_set(&ndlp->cmd_pending, 0);
5029         ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
5030         ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
5031 }
5032
5033 void
5034 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5035 {
5036         /*
5037          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
5038          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
5039          * the ndlp from the vport. The ndlp marked as UNUSED on the list
5040          * until ALL other outstanding threads have completed. We check
5041          * that the ndlp not already in the UNUSED state before we proceed.
5042          */
5043         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
5044                 return;
5045         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
5046         ndlp->nlp_flag |= NLP_DROPPED;
5047         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
5048                 lpfc_cleanup_vports_rrqs(vport, ndlp);
5049                 lpfc_unreg_rpi(vport, ndlp);
5050         }
5051
5052         lpfc_nlp_put(ndlp);
5053         return;
5054 }
5055
5056 /*
5057  * Start / ReStart rescue timer for Discovery / RSCN handling
5058  */
5059 void
5060 lpfc_set_disctmo(struct lpfc_vport *vport)
5061 {
5062         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5063         struct lpfc_hba  *phba = vport->phba;
5064         uint32_t tmo;
5065
5066         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
5067                 /* For FAN, timeout should be greater than edtov */
5068                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
5069         } else {
5070                 /* Normal discovery timeout should be > than ELS/CT timeout
5071                  * FC spec states we need 3 * ratov for CT requests
5072                  */
5073                 tmo = ((phba->fc_ratov * 3) + 3);
5074         }
5075
5076
5077         if (!timer_pending(&vport->fc_disctmo)) {
5078                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
5079                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
5080                         tmo, vport->port_state, vport->fc_flag);
5081         }
5082
5083         mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo));
5084         spin_lock_irq(shost->host_lock);
5085         vport->fc_flag |= FC_DISC_TMO;
5086         spin_unlock_irq(shost->host_lock);
5087
5088         /* Start Discovery Timer state <hba_state> */
5089         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5090                          "0247 Start Discovery Timer state x%x "
5091                          "Data: x%x x%lx x%x x%x\n",
5092                          vport->port_state, tmo,
5093                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
5094                          vport->fc_adisc_cnt);
5095
5096         return;
5097 }
5098
5099 /*
5100  * Cancel rescue timer for Discovery / RSCN handling
5101  */
5102 int
5103 lpfc_can_disctmo(struct lpfc_vport *vport)
5104 {
5105         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5106         unsigned long iflags;
5107
5108         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
5109                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
5110                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
5111
5112         /* Turn off discovery timer if its running */
5113         if (vport->fc_flag & FC_DISC_TMO ||
5114             timer_pending(&vport->fc_disctmo)) {
5115                 spin_lock_irqsave(shost->host_lock, iflags);
5116                 vport->fc_flag &= ~FC_DISC_TMO;
5117                 spin_unlock_irqrestore(shost->host_lock, iflags);
5118                 del_timer_sync(&vport->fc_disctmo);
5119                 spin_lock_irqsave(&vport->work_port_lock, iflags);
5120                 vport->work_port_events &= ~WORKER_DISC_TMO;
5121                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
5122         }
5123
5124         /* Cancel Discovery Timer state <hba_state> */
5125         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5126                          "0248 Cancel Discovery Timer state x%x "
5127                          "Data: x%x x%x x%x\n",
5128                          vport->port_state, vport->fc_flag,
5129                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
5130         return 0;
5131 }
5132
5133 /*
5134  * Check specified ring for outstanding IOCB on the SLI queue
5135  * Return true if iocb matches the specified nport
5136  */
5137 int
5138 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
5139                     struct lpfc_sli_ring *pring,
5140                     struct lpfc_iocbq *iocb,
5141                     struct lpfc_nodelist *ndlp)
5142 {
5143         struct lpfc_vport *vport = ndlp->vport;
5144         u8 ulp_command;
5145         u16 ulp_context;
5146         u32 remote_id;
5147
5148         if (iocb->vport != vport)
5149                 return 0;
5150
5151         ulp_command = get_job_cmnd(phba, iocb);
5152         ulp_context = get_job_ulpcontext(phba, iocb);
5153         remote_id = get_job_els_rsp64_did(phba, iocb);
5154
5155         if (pring->ringno == LPFC_ELS_RING) {
5156                 switch (ulp_command) {
5157                 case CMD_GEN_REQUEST64_CR:
5158                         if (iocb->context_un.ndlp == ndlp)
5159                                 return 1;
5160                         fallthrough;
5161                 case CMD_ELS_REQUEST64_CR:
5162                         if (remote_id == ndlp->nlp_DID)
5163                                 return 1;
5164                         fallthrough;
5165                 case CMD_XMIT_ELS_RSP64_CX:
5166                         if (iocb->context1 == (uint8_t *) ndlp)
5167                                 return 1;
5168                 }
5169         } else if (pring->ringno == LPFC_FCP_RING) {
5170                 /* Skip match check if waiting to relogin to FCP target */
5171                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
5172                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
5173                         return 0;
5174                 }
5175                 if (ulp_context == ndlp->nlp_rpi)
5176                         return 1;
5177         }
5178         return 0;
5179 }
5180
5181 static void
5182 __lpfc_dequeue_nport_iocbs(struct lpfc_hba *phba,
5183                 struct lpfc_nodelist *ndlp, struct lpfc_sli_ring *pring,
5184                 struct list_head *dequeue_list)
5185 {
5186         struct lpfc_iocbq *iocb, *next_iocb;
5187
5188         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
5189                 /* Check to see if iocb matches the nport */
5190                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
5191                         /* match, dequeue */
5192                         list_move_tail(&iocb->list, dequeue_list);
5193         }
5194 }
5195
5196 static void
5197 lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba *phba,
5198                 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
5199 {
5200         struct lpfc_sli *psli = &phba->sli;
5201         uint32_t i;
5202
5203         spin_lock_irq(&phba->hbalock);
5204         for (i = 0; i < psli->num_rings; i++)
5205                 __lpfc_dequeue_nport_iocbs(phba, ndlp, &psli->sli3_ring[i],
5206                                                 dequeue_list);
5207         spin_unlock_irq(&phba->hbalock);
5208 }
5209
5210 static void
5211 lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba *phba,
5212                 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
5213 {
5214         struct lpfc_sli_ring *pring;
5215         struct lpfc_queue *qp = NULL;
5216
5217         spin_lock_irq(&phba->hbalock);
5218         list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
5219                 pring = qp->pring;
5220                 if (!pring)
5221                         continue;
5222                 spin_lock(&pring->ring_lock);
5223                 __lpfc_dequeue_nport_iocbs(phba, ndlp, pring, dequeue_list);
5224                 spin_unlock(&pring->ring_lock);
5225         }
5226         spin_unlock_irq(&phba->hbalock);
5227 }
5228
5229 /*
5230  * Free resources / clean up outstanding I/Os
5231  * associated with nlp_rpi in the LPFC_NODELIST entry.
5232  */
5233 static int
5234 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
5235 {
5236         LIST_HEAD(completions);
5237
5238         lpfc_fabric_abort_nport(ndlp);
5239
5240         /*
5241          * Everything that matches on txcmplq will be returned
5242          * by firmware with a no rpi error.
5243          */
5244         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
5245                 if (phba->sli_rev != LPFC_SLI_REV4)
5246                         lpfc_sli3_dequeue_nport_iocbs(phba, ndlp, &completions);
5247                 else
5248                         lpfc_sli4_dequeue_nport_iocbs(phba, ndlp, &completions);
5249         }
5250
5251         /* Cancel all the IOCBs from the completions list */
5252         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5253                               IOERR_SLI_ABORTED);
5254
5255         return 0;
5256 }
5257
5258 /**
5259  * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO
5260  * @phba: Pointer to HBA context object.
5261  * @pmb: Pointer to mailbox object.
5262  *
5263  * This function will issue an ELS LOGO command after completing
5264  * the UNREG_RPI.
5265  **/
5266 static void
5267 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5268 {
5269         struct lpfc_vport  *vport = pmb->vport;
5270         struct lpfc_nodelist *ndlp;
5271
5272         ndlp = (struct lpfc_nodelist *)(pmb->ctx_ndlp);
5273         if (!ndlp)
5274                 return;
5275         lpfc_issue_els_logo(vport, ndlp, 0);
5276         mempool_free(pmb, phba->mbox_mem_pool);
5277
5278         /* Check to see if there are any deferred events to process */
5279         if ((ndlp->nlp_flag & NLP_UNREG_INP) &&
5280             (ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING)) {
5281                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5282                                  "1434 UNREG cmpl deferred logo x%x "
5283                                  "on NPort x%x Data: x%x x%px\n",
5284                                  ndlp->nlp_rpi, ndlp->nlp_DID,
5285                                  ndlp->nlp_defer_did, ndlp);
5286
5287                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5288                 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
5289                 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
5290         } else {
5291                 /* NLP_RELEASE_RPI is only set for SLI4 ports. */
5292                 if (ndlp->nlp_flag & NLP_RELEASE_RPI) {
5293                         lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi);
5294                         spin_lock_irq(&ndlp->lock);
5295                         ndlp->nlp_flag &= ~NLP_RELEASE_RPI;
5296                         ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
5297                         spin_unlock_irq(&ndlp->lock);
5298                 }
5299                 spin_lock_irq(&ndlp->lock);
5300                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5301                 spin_unlock_irq(&ndlp->lock);
5302         }
5303 }
5304
5305 /*
5306  * Sets the mailbox completion handler to be used for the
5307  * unreg_rpi command. The handler varies based on the state of
5308  * the port and what will be happening to the rpi next.
5309  */
5310 static void
5311 lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba *phba, struct lpfc_vport *vport,
5312         struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox)
5313 {
5314         unsigned long iflags;
5315
5316         /* Driver always gets a reference on the mailbox job
5317          * in support of async jobs.
5318          */
5319         mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
5320         if (!mbox->ctx_ndlp)
5321                 return;
5322
5323         if (ndlp->nlp_flag & NLP_ISSUE_LOGO) {
5324                 mbox->mbox_cmpl = lpfc_nlp_logo_unreg;
5325
5326         } else if (phba->sli_rev == LPFC_SLI_REV4 &&
5327                    (!(vport->load_flag & FC_UNLOADING)) &&
5328                     (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
5329                                       LPFC_SLI_INTF_IF_TYPE_2) &&
5330                     (kref_read(&ndlp->kref) > 0)) {
5331                 mbox->mbox_cmpl = lpfc_sli4_unreg_rpi_cmpl_clr;
5332         } else {
5333                 if (vport->load_flag & FC_UNLOADING) {
5334                         if (phba->sli_rev == LPFC_SLI_REV4) {
5335                                 spin_lock_irqsave(&ndlp->lock, iflags);
5336                                 ndlp->nlp_flag |= NLP_RELEASE_RPI;
5337                                 spin_unlock_irqrestore(&ndlp->lock, iflags);
5338                         }
5339                 }
5340                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5341         }
5342 }
5343
5344 /*
5345  * Free rpi associated with LPFC_NODELIST entry.
5346  * This routine is called from lpfc_freenode(), when we are removing
5347  * a LPFC_NODELIST entry. It is also called if the driver initiates a
5348  * LOGO that completes successfully, and we are waiting to PLOGI back
5349  * to the remote NPort. In addition, it is called after we receive
5350  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
5351  * we are waiting to PLOGI back to the remote NPort.
5352  */
5353 int
5354 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5355 {
5356         struct lpfc_hba *phba = vport->phba;
5357         LPFC_MBOXQ_t    *mbox;
5358         int rc, acc_plogi = 1;
5359         uint16_t rpi;
5360
5361         if (ndlp->nlp_flag & NLP_RPI_REGISTERED ||
5362             ndlp->nlp_flag & NLP_REG_LOGIN_SEND) {
5363                 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
5364                         lpfc_printf_vlog(vport, KERN_INFO,
5365                                          LOG_NODE | LOG_DISCOVERY,
5366                                          "3366 RPI x%x needs to be "
5367                                          "unregistered nlp_flag x%x "
5368                                          "did x%x\n",
5369                                          ndlp->nlp_rpi, ndlp->nlp_flag,
5370                                          ndlp->nlp_DID);
5371
5372                 /* If there is already an UNREG in progress for this ndlp,
5373                  * no need to queue up another one.
5374                  */
5375                 if (ndlp->nlp_flag & NLP_UNREG_INP) {
5376                         lpfc_printf_vlog(vport, KERN_INFO,
5377                                          LOG_NODE | LOG_DISCOVERY,
5378                                          "1436 unreg_rpi SKIP UNREG x%x on "
5379                                          "NPort x%x deferred x%x  flg x%x "
5380                                          "Data: x%px\n",
5381                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5382                                          ndlp->nlp_defer_did,
5383                                          ndlp->nlp_flag, ndlp);
5384                         goto out;
5385                 }
5386
5387                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5388                 if (mbox) {
5389                         /* SLI4 ports require the physical rpi value. */
5390                         rpi = ndlp->nlp_rpi;
5391                         if (phba->sli_rev == LPFC_SLI_REV4)
5392                                 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
5393
5394                         lpfc_unreg_login(phba, vport->vpi, rpi, mbox);
5395                         mbox->vport = vport;
5396                         lpfc_set_unreg_login_mbx_cmpl(phba, vport, ndlp, mbox);
5397                         if (!mbox->ctx_ndlp) {
5398                                 mempool_free(mbox, phba->mbox_mem_pool);
5399                                 return 1;
5400                         }
5401
5402                         if (mbox->mbox_cmpl == lpfc_sli4_unreg_rpi_cmpl_clr)
5403                                 /*
5404                                  * accept PLOGIs after unreg_rpi_cmpl
5405                                  */
5406                                 acc_plogi = 0;
5407                         if (((ndlp->nlp_DID & Fabric_DID_MASK) !=
5408                             Fabric_DID_MASK) &&
5409                             (!(vport->fc_flag & FC_OFFLINE_MODE)))
5410                                 ndlp->nlp_flag |= NLP_UNREG_INP;
5411
5412                         lpfc_printf_vlog(vport, KERN_INFO,
5413                                          LOG_NODE | LOG_DISCOVERY,
5414                                          "1433 unreg_rpi UNREG x%x on "
5415                                          "NPort x%x deferred flg x%x "
5416                                          "Data:x%px\n",
5417                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5418                                          ndlp->nlp_flag, ndlp);
5419
5420                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5421                         if (rc == MBX_NOT_FINISHED) {
5422                                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5423                                 mempool_free(mbox, phba->mbox_mem_pool);
5424                                 acc_plogi = 1;
5425                                 lpfc_nlp_put(ndlp);
5426                         }
5427                 } else {
5428                         lpfc_printf_vlog(vport, KERN_INFO,
5429                                          LOG_NODE | LOG_DISCOVERY,
5430                                          "1444 Failed to allocate mempool "
5431                                          "unreg_rpi UNREG x%x, "
5432                                          "DID x%x, flag x%x, "
5433                                          "ndlp x%px\n",
5434                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5435                                          ndlp->nlp_flag, ndlp);
5436
5437                         /* Because mempool_alloc failed, we
5438                          * will issue a LOGO here and keep the rpi alive if
5439                          * not unloading.
5440                          */
5441                         if (!(vport->load_flag & FC_UNLOADING)) {
5442                                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5443                                 lpfc_issue_els_logo(vport, ndlp, 0);
5444                                 ndlp->nlp_prev_state = ndlp->nlp_state;
5445                                 lpfc_nlp_set_state(vport, ndlp,
5446                                                    NLP_STE_NPR_NODE);
5447                         }
5448
5449                         return 1;
5450                 }
5451                 lpfc_no_rpi(phba, ndlp);
5452 out:
5453                 if (phba->sli_rev != LPFC_SLI_REV4)
5454                         ndlp->nlp_rpi = 0;
5455                 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
5456                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
5457                 if (acc_plogi)
5458                         ndlp->nlp_flag &= ~NLP_LOGO_ACC;
5459                 return 1;
5460         }
5461         ndlp->nlp_flag &= ~NLP_LOGO_ACC;
5462         return 0;
5463 }
5464
5465 /**
5466  * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
5467  * @phba: pointer to lpfc hba data structure.
5468  *
5469  * This routine is invoked to unregister all the currently registered RPIs
5470  * to the HBA.
5471  **/
5472 void
5473 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
5474 {
5475         struct lpfc_vport **vports;
5476         struct lpfc_nodelist *ndlp;
5477         struct Scsi_Host *shost;
5478         int i;
5479
5480         vports = lpfc_create_vport_work_array(phba);
5481         if (!vports) {
5482                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5483                                 "2884 Vport array allocation failed \n");
5484                 return;
5485         }
5486         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5487                 shost = lpfc_shost_from_vport(vports[i]);
5488                 spin_lock_irq(shost->host_lock);
5489                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
5490                         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
5491                                 /* The mempool_alloc might sleep */
5492                                 spin_unlock_irq(shost->host_lock);
5493                                 lpfc_unreg_rpi(vports[i], ndlp);
5494                                 spin_lock_irq(shost->host_lock);
5495                         }
5496                 }
5497                 spin_unlock_irq(shost->host_lock);
5498         }
5499         lpfc_destroy_vport_work_array(phba, vports);
5500 }
5501
5502 void
5503 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
5504 {
5505         struct lpfc_hba  *phba  = vport->phba;
5506         LPFC_MBOXQ_t     *mbox;
5507         int rc;
5508
5509         if (phba->sli_rev == LPFC_SLI_REV4) {
5510                 lpfc_sli4_unreg_all_rpis(vport);
5511                 return;
5512         }
5513
5514         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5515         if (mbox) {
5516                 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT,
5517                                  mbox);
5518                 mbox->vport = vport;
5519                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5520                 mbox->ctx_ndlp = NULL;
5521                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5522                 if (rc != MBX_TIMEOUT)
5523                         mempool_free(mbox, phba->mbox_mem_pool);
5524
5525                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5526                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5527                                          "1836 Could not issue "
5528                                          "unreg_login(all_rpis) status %d\n",
5529                                          rc);
5530         }
5531 }
5532
5533 void
5534 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
5535 {
5536         struct lpfc_hba  *phba  = vport->phba;
5537         LPFC_MBOXQ_t     *mbox;
5538         int rc;
5539
5540         /* Unreg DID is an SLI3 operation. */
5541         if (phba->sli_rev > LPFC_SLI_REV3)
5542                 return;
5543
5544         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5545         if (mbox) {
5546                 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS,
5547                                mbox);
5548                 mbox->vport = vport;
5549                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5550                 mbox->ctx_ndlp = NULL;
5551                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5552                 if (rc != MBX_TIMEOUT)
5553                         mempool_free(mbox, phba->mbox_mem_pool);
5554
5555                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5556                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5557                                          "1815 Could not issue "
5558                                          "unreg_did (default rpis) status %d\n",
5559                                          rc);
5560         }
5561 }
5562
5563 /*
5564  * Free resources associated with LPFC_NODELIST entry
5565  * so it can be freed.
5566  */
5567 static int
5568 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5569 {
5570         struct lpfc_hba  *phba = vport->phba;
5571         LPFC_MBOXQ_t *mb, *nextmb;
5572         struct lpfc_dmabuf *mp;
5573
5574         /* Cleanup node for NPort <nlp_DID> */
5575         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5576                          "0900 Cleanup node for NPort x%x "
5577                          "Data: x%x x%x x%x\n",
5578                          ndlp->nlp_DID, ndlp->nlp_flag,
5579                          ndlp->nlp_state, ndlp->nlp_rpi);
5580         lpfc_dequeue_node(vport, ndlp);
5581
5582         /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */
5583
5584         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
5585         if ((mb = phba->sli.mbox_active)) {
5586                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5587                    !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5588                    (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
5589                         mb->ctx_ndlp = NULL;
5590                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5591                 }
5592         }
5593
5594         spin_lock_irq(&phba->hbalock);
5595         /* Cleanup REG_LOGIN completions which are not yet processed */
5596         list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
5597                 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) ||
5598                         (mb->mbox_flag & LPFC_MBX_IMED_UNREG) ||
5599                         (ndlp != (struct lpfc_nodelist *)mb->ctx_ndlp))
5600                         continue;
5601
5602                 mb->ctx_ndlp = NULL;
5603                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5604         }
5605
5606         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
5607                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5608                    !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5609                     (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
5610                         mp = (struct lpfc_dmabuf *)(mb->ctx_buf);
5611                         if (mp) {
5612                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
5613                                 kfree(mp);
5614                         }
5615                         list_del(&mb->list);
5616                         mempool_free(mb, phba->mbox_mem_pool);
5617                         /* We shall not invoke the lpfc_nlp_put to decrement
5618                          * the ndlp reference count as we are in the process
5619                          * of lpfc_nlp_release.
5620                          */
5621                 }
5622         }
5623         spin_unlock_irq(&phba->hbalock);
5624
5625         lpfc_els_abort(phba, ndlp);
5626
5627         spin_lock_irq(&ndlp->lock);
5628         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
5629         spin_unlock_irq(&ndlp->lock);
5630
5631         ndlp->nlp_last_elscmd = 0;
5632         del_timer_sync(&ndlp->nlp_delayfunc);
5633
5634         list_del_init(&ndlp->els_retry_evt.evt_listp);
5635         list_del_init(&ndlp->dev_loss_evt.evt_listp);
5636         list_del_init(&ndlp->recovery_evt.evt_listp);
5637         lpfc_cleanup_vports_rrqs(vport, ndlp);
5638
5639         if (phba->sli_rev == LPFC_SLI_REV4)
5640                 ndlp->nlp_flag |= NLP_RELEASE_RPI;
5641
5642         return 0;
5643 }
5644
5645 static int
5646 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
5647               uint32_t did)
5648 {
5649         D_ID mydid, ndlpdid, matchdid;
5650
5651         if (did == Bcast_DID)
5652                 return 0;
5653
5654         /* First check for Direct match */
5655         if (ndlp->nlp_DID == did)
5656                 return 1;
5657
5658         /* Next check for area/domain identically equals 0 match */
5659         mydid.un.word = vport->fc_myDID;
5660         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
5661                 return 0;
5662         }
5663
5664         matchdid.un.word = did;
5665         ndlpdid.un.word = ndlp->nlp_DID;
5666         if (matchdid.un.b.id == ndlpdid.un.b.id) {
5667                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
5668                     (mydid.un.b.area == matchdid.un.b.area)) {
5669                         /* This code is supposed to match the ID
5670                          * for a private loop device that is
5671                          * connect to fl_port. But we need to
5672                          * check that the port did not just go
5673                          * from pt2pt to fabric or we could end
5674                          * up matching ndlp->nlp_DID 000001 to
5675                          * fabric DID 0x20101
5676                          */
5677                         if ((ndlpdid.un.b.domain == 0) &&
5678                             (ndlpdid.un.b.area == 0)) {
5679                                 if (ndlpdid.un.b.id &&
5680                                     vport->phba->fc_topology ==
5681                                     LPFC_TOPOLOGY_LOOP)
5682                                         return 1;
5683                         }
5684                         return 0;
5685                 }
5686
5687                 matchdid.un.word = ndlp->nlp_DID;
5688                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
5689                     (mydid.un.b.area == ndlpdid.un.b.area)) {
5690                         if ((matchdid.un.b.domain == 0) &&
5691                             (matchdid.un.b.area == 0)) {
5692                                 if (matchdid.un.b.id)
5693                                         return 1;
5694                         }
5695                 }
5696         }
5697         return 0;
5698 }
5699
5700 /* Search for a nodelist entry */
5701 static struct lpfc_nodelist *
5702 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5703 {
5704         struct lpfc_nodelist *ndlp;
5705         uint32_t data1;
5706
5707         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5708                 if (lpfc_matchdid(vport, ndlp, did)) {
5709                         data1 = (((uint32_t)ndlp->nlp_state << 24) |
5710                                  ((uint32_t)ndlp->nlp_xri << 16) |
5711                                  ((uint32_t)ndlp->nlp_type << 8)
5712                                  );
5713                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5714                                          "0929 FIND node DID "
5715                                          "Data: x%px x%x x%x x%x x%x x%px\n",
5716                                          ndlp, ndlp->nlp_DID,
5717                                          ndlp->nlp_flag, data1, ndlp->nlp_rpi,
5718                                          ndlp->active_rrqs_xri_bitmap);
5719                         return ndlp;
5720                 }
5721         }
5722
5723         /* FIND node did <did> NOT FOUND */
5724         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5725                          "0932 FIND node did x%x NOT FOUND.\n", did);
5726         return NULL;
5727 }
5728
5729 struct lpfc_nodelist *
5730 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5731 {
5732         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5733         struct lpfc_nodelist *ndlp;
5734         unsigned long iflags;
5735
5736         spin_lock_irqsave(shost->host_lock, iflags);
5737         ndlp = __lpfc_findnode_did(vport, did);
5738         spin_unlock_irqrestore(shost->host_lock, iflags);
5739         return ndlp;
5740 }
5741
5742 struct lpfc_nodelist *
5743 lpfc_findnode_mapped(struct lpfc_vport *vport)
5744 {
5745         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5746         struct lpfc_nodelist *ndlp;
5747         uint32_t data1;
5748         unsigned long iflags;
5749
5750         spin_lock_irqsave(shost->host_lock, iflags);
5751
5752         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5753                 if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE ||
5754                     ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
5755                         data1 = (((uint32_t)ndlp->nlp_state << 24) |
5756                                  ((uint32_t)ndlp->nlp_xri << 16) |
5757                                  ((uint32_t)ndlp->nlp_type << 8) |
5758                                  ((uint32_t)ndlp->nlp_rpi & 0xff));
5759                         spin_unlock_irqrestore(shost->host_lock, iflags);
5760                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5761                                          "2025 FIND node DID "
5762                                          "Data: x%px x%x x%x x%x x%px\n",
5763                                          ndlp, ndlp->nlp_DID,
5764                                          ndlp->nlp_flag, data1,
5765                                          ndlp->active_rrqs_xri_bitmap);
5766                         return ndlp;
5767                 }
5768         }
5769         spin_unlock_irqrestore(shost->host_lock, iflags);
5770
5771         /* FIND node did <did> NOT FOUND */
5772         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5773                          "2026 FIND mapped did NOT FOUND.\n");
5774         return NULL;
5775 }
5776
5777 struct lpfc_nodelist *
5778 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
5779 {
5780         struct lpfc_nodelist *ndlp;
5781
5782         ndlp = lpfc_findnode_did(vport, did);
5783         if (!ndlp) {
5784                 if (vport->phba->nvmet_support)
5785                         return NULL;
5786                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
5787                     lpfc_rscn_payload_check(vport, did) == 0)
5788                         return NULL;
5789                 ndlp = lpfc_nlp_init(vport, did);
5790                 if (!ndlp)
5791                         return NULL;
5792                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5793
5794                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5795                                  "6453 Setup New Node 2B_DISC x%x "
5796                                  "Data:x%x x%x x%x\n",
5797                                  ndlp->nlp_DID, ndlp->nlp_flag,
5798                                  ndlp->nlp_state, vport->fc_flag);
5799
5800                 spin_lock_irq(&ndlp->lock);
5801                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5802                 spin_unlock_irq(&ndlp->lock);
5803                 return ndlp;
5804         }
5805
5806         /* The NVME Target does not want to actively manage an rport.
5807          * The goal is to allow the target to reset its state and clear
5808          * pending IO in preparation for the initiator to recover.
5809          */
5810         if ((vport->fc_flag & FC_RSCN_MODE) &&
5811             !(vport->fc_flag & FC_NDISC_ACTIVE)) {
5812                 if (lpfc_rscn_payload_check(vport, did)) {
5813
5814                         /* Since this node is marked for discovery,
5815                          * delay timeout is not needed.
5816                          */
5817                         lpfc_cancel_retry_delay_tmo(vport, ndlp);
5818
5819                         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5820                                          "6455 Setup RSCN Node 2B_DISC x%x "
5821                                          "Data:x%x x%x x%x\n",
5822                                          ndlp->nlp_DID, ndlp->nlp_flag,
5823                                          ndlp->nlp_state, vport->fc_flag);
5824
5825                         /* NVME Target mode waits until rport is known to be
5826                          * impacted by the RSCN before it transitions.  No
5827                          * active management - just go to NPR provided the
5828                          * node had a valid login.
5829                          */
5830                         if (vport->phba->nvmet_support)
5831                                 return ndlp;
5832
5833                         /* If we've already received a PLOGI from this NPort
5834                          * we don't need to try to discover it again.
5835                          */
5836                         if (ndlp->nlp_flag & NLP_RCV_PLOGI &&
5837                             !(ndlp->nlp_type &
5838                              (NLP_FCP_TARGET | NLP_NVME_TARGET)))
5839                                 return NULL;
5840
5841                         ndlp->nlp_prev_state = ndlp->nlp_state;
5842                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5843
5844                         spin_lock_irq(&ndlp->lock);
5845                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5846                         spin_unlock_irq(&ndlp->lock);
5847                 } else {
5848                         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5849                                          "6456 Skip Setup RSCN Node x%x "
5850                                          "Data:x%x x%x x%x\n",
5851                                          ndlp->nlp_DID, ndlp->nlp_flag,
5852                                          ndlp->nlp_state, vport->fc_flag);
5853                         ndlp = NULL;
5854                 }
5855         } else {
5856                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5857                                  "6457 Setup Active Node 2B_DISC x%x "
5858                                  "Data:x%x x%x x%x\n",
5859                                  ndlp->nlp_DID, ndlp->nlp_flag,
5860                                  ndlp->nlp_state, vport->fc_flag);
5861
5862                 /* If the initiator received a PLOGI from this NPort or if the
5863                  * initiator is already in the process of discovery on it,
5864                  * there's no need to try to discover it again.
5865                  */
5866                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
5867                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5868                     (!vport->phba->nvmet_support &&
5869                      ndlp->nlp_flag & NLP_RCV_PLOGI))
5870                         return NULL;
5871
5872                 if (vport->phba->nvmet_support)
5873                         return ndlp;
5874
5875                 /* Moving to NPR state clears unsolicited flags and
5876                  * allows for rediscovery
5877                  */
5878                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5879
5880                 spin_lock_irq(&ndlp->lock);
5881                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5882                 spin_unlock_irq(&ndlp->lock);
5883         }
5884         return ndlp;
5885 }
5886
5887 /* Build a list of nodes to discover based on the loopmap */
5888 void
5889 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
5890 {
5891         struct lpfc_hba  *phba = vport->phba;
5892         int j;
5893         uint32_t alpa, index;
5894
5895         if (!lpfc_is_link_up(phba))
5896                 return;
5897
5898         if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
5899                 return;
5900
5901         /* Check for loop map present or not */
5902         if (phba->alpa_map[0]) {
5903                 for (j = 1; j <= phba->alpa_map[0]; j++) {
5904                         alpa = phba->alpa_map[j];
5905                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
5906                                 continue;
5907                         lpfc_setup_disc_node(vport, alpa);
5908                 }
5909         } else {
5910                 /* No alpamap, so try all alpa's */
5911                 for (j = 0; j < FC_MAXLOOP; j++) {
5912                         /* If cfg_scan_down is set, start from highest
5913                          * ALPA (0xef) to lowest (0x1).
5914                          */
5915                         if (vport->cfg_scan_down)
5916                                 index = j;
5917                         else
5918                                 index = FC_MAXLOOP - j - 1;
5919                         alpa = lpfcAlpaArray[index];
5920                         if ((vport->fc_myDID & 0xff) == alpa)
5921                                 continue;
5922                         lpfc_setup_disc_node(vport, alpa);
5923                 }
5924         }
5925         return;
5926 }
5927
5928 /* SLI3 only */
5929 void
5930 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
5931 {
5932         LPFC_MBOXQ_t *mbox;
5933         struct lpfc_sli *psli = &phba->sli;
5934         struct lpfc_sli_ring *extra_ring = &psli->sli3_ring[LPFC_EXTRA_RING];
5935         struct lpfc_sli_ring *fcp_ring   = &psli->sli3_ring[LPFC_FCP_RING];
5936         int  rc;
5937
5938         /*
5939          * if it's not a physical port or if we already send
5940          * clear_la then don't send it.
5941          */
5942         if ((phba->link_state >= LPFC_CLEAR_LA) ||
5943             (vport->port_type != LPFC_PHYSICAL_PORT) ||
5944                 (phba->sli_rev == LPFC_SLI_REV4))
5945                 return;
5946
5947                         /* Link up discovery */
5948         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
5949                 phba->link_state = LPFC_CLEAR_LA;
5950                 lpfc_clear_la(phba, mbox);
5951                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
5952                 mbox->vport = vport;
5953                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5954                 if (rc == MBX_NOT_FINISHED) {
5955                         mempool_free(mbox, phba->mbox_mem_pool);
5956                         lpfc_disc_flush_list(vport);
5957                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5958                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5959                         phba->link_state = LPFC_HBA_ERROR;
5960                 }
5961         }
5962 }
5963
5964 /* Reg_vpi to tell firmware to resume normal operations */
5965 void
5966 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
5967 {
5968         LPFC_MBOXQ_t *regvpimbox;
5969
5970         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5971         if (regvpimbox) {
5972                 lpfc_reg_vpi(vport, regvpimbox);
5973                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
5974                 regvpimbox->vport = vport;
5975                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
5976                                         == MBX_NOT_FINISHED) {
5977                         mempool_free(regvpimbox, phba->mbox_mem_pool);
5978                 }
5979         }
5980 }
5981
5982 /* Start Link up / RSCN discovery on NPR nodes */
5983 void
5984 lpfc_disc_start(struct lpfc_vport *vport)
5985 {
5986         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5987         struct lpfc_hba  *phba = vport->phba;
5988         uint32_t num_sent;
5989         uint32_t clear_la_pending;
5990
5991         if (!lpfc_is_link_up(phba)) {
5992                 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
5993                                  "3315 Link is not up %x\n",
5994                                  phba->link_state);
5995                 return;
5996         }
5997
5998         if (phba->link_state == LPFC_CLEAR_LA)
5999                 clear_la_pending = 1;
6000         else
6001                 clear_la_pending = 0;
6002
6003         if (vport->port_state < LPFC_VPORT_READY)
6004                 vport->port_state = LPFC_DISC_AUTH;
6005
6006         lpfc_set_disctmo(vport);
6007
6008         vport->fc_prevDID = vport->fc_myDID;
6009         vport->num_disc_nodes = 0;
6010
6011         /* Start Discovery state <hba_state> */
6012         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
6013                          "0202 Start Discovery port state x%x "
6014                          "flg x%x Data: x%x x%x x%x\n",
6015                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
6016                          vport->fc_adisc_cnt, vport->fc_npr_cnt);
6017
6018         /* First do ADISCs - if any */
6019         num_sent = lpfc_els_disc_adisc(vport);
6020
6021         if (num_sent)
6022                 return;
6023
6024         /* Register the VPI for SLI3, NPIV only. */
6025         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
6026             !(vport->fc_flag & FC_PT2PT) &&
6027             !(vport->fc_flag & FC_RSCN_MODE) &&
6028             (phba->sli_rev < LPFC_SLI_REV4)) {
6029                 lpfc_issue_clear_la(phba, vport);
6030                 lpfc_issue_reg_vpi(phba, vport);
6031                 return;
6032         }
6033
6034         /*
6035          * For SLI2, we need to set port_state to READY and continue
6036          * discovery.
6037          */
6038         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
6039                 /* If we get here, there is nothing to ADISC */
6040                 lpfc_issue_clear_la(phba, vport);
6041
6042                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
6043                         vport->num_disc_nodes = 0;
6044                         /* go thru NPR nodes and issue ELS PLOGIs */
6045                         if (vport->fc_npr_cnt)
6046                                 lpfc_els_disc_plogi(vport);
6047
6048                         if (!vport->num_disc_nodes) {
6049                                 spin_lock_irq(shost->host_lock);
6050                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
6051                                 spin_unlock_irq(shost->host_lock);
6052                                 lpfc_can_disctmo(vport);
6053                         }
6054                 }
6055                 vport->port_state = LPFC_VPORT_READY;
6056         } else {
6057                 /* Next do PLOGIs - if any */
6058                 num_sent = lpfc_els_disc_plogi(vport);
6059
6060                 if (num_sent)
6061                         return;
6062
6063                 if (vport->fc_flag & FC_RSCN_MODE) {
6064                         /* Check to see if more RSCNs came in while we
6065                          * were processing this one.
6066                          */
6067                         if ((vport->fc_rscn_id_cnt == 0) &&
6068                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
6069                                 spin_lock_irq(shost->host_lock);
6070                                 vport->fc_flag &= ~FC_RSCN_MODE;
6071                                 spin_unlock_irq(shost->host_lock);
6072                                 lpfc_can_disctmo(vport);
6073                         } else
6074                                 lpfc_els_handle_rscn(vport);
6075                 }
6076         }
6077         return;
6078 }
6079
6080 /*
6081  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
6082  *  ring the match the sppecified nodelist.
6083  */
6084 static void
6085 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
6086 {
6087         LIST_HEAD(completions);
6088         struct lpfc_iocbq    *iocb, *next_iocb;
6089         struct lpfc_sli_ring *pring;
6090         u32 ulp_command;
6091
6092         pring = lpfc_phba_elsring(phba);
6093         if (unlikely(!pring))
6094                 return;
6095
6096         /* Error matching iocb on txq or txcmplq
6097          * First check the txq.
6098          */
6099         spin_lock_irq(&phba->hbalock);
6100         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
6101                 if (iocb->context1 != ndlp)
6102                         continue;
6103
6104                 ulp_command = get_job_cmnd(phba, iocb);
6105
6106                 if (ulp_command == CMD_ELS_REQUEST64_CR ||
6107                     ulp_command == CMD_XMIT_ELS_RSP64_CX) {
6108
6109                         list_move_tail(&iocb->list, &completions);
6110                 }
6111         }
6112
6113         /* Next check the txcmplq */
6114         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
6115                 if (iocb->context1 != ndlp)
6116                         continue;
6117
6118                 ulp_command = get_job_cmnd(phba, iocb);
6119
6120                 if (ulp_command == CMD_ELS_REQUEST64_CR ||
6121                     ulp_command == CMD_XMIT_ELS_RSP64_CX) {
6122                         lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL);
6123                 }
6124         }
6125         spin_unlock_irq(&phba->hbalock);
6126
6127         /* Make sure HBA is alive */
6128         lpfc_issue_hb_tmo(phba);
6129
6130         /* Cancel all the IOCBs from the completions list */
6131         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
6132                               IOERR_SLI_ABORTED);
6133 }
6134
6135 static void
6136 lpfc_disc_flush_list(struct lpfc_vport *vport)
6137 {
6138         struct lpfc_nodelist *ndlp, *next_ndlp;
6139         struct lpfc_hba *phba = vport->phba;
6140
6141         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
6142                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6143                                          nlp_listp) {
6144                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
6145                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
6146                                 lpfc_free_tx(phba, ndlp);
6147                         }
6148                 }
6149         }
6150 }
6151
6152 /*
6153  * lpfc_notify_xport_npr - notifies xport of node disappearance
6154  * @vport: Pointer to Virtual Port object.
6155  *
6156  * Transitions all ndlps to NPR state.  When lpfc_nlp_set_state
6157  * calls lpfc_nlp_state_cleanup, the ndlp->rport is unregistered
6158  * and transport notified that the node is gone.
6159  * Return Code:
6160  *      none
6161  */
6162 static void
6163 lpfc_notify_xport_npr(struct lpfc_vport *vport)
6164 {
6165         struct lpfc_nodelist *ndlp, *next_ndlp;
6166
6167         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6168                                  nlp_listp) {
6169                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
6170         }
6171 }
6172 void
6173 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
6174 {
6175         lpfc_els_flush_rscn(vport);
6176         lpfc_els_flush_cmd(vport);
6177         lpfc_disc_flush_list(vport);
6178         if (pci_channel_offline(vport->phba->pcidev))
6179                 lpfc_notify_xport_npr(vport);
6180 }
6181
6182 /*****************************************************************************/
6183 /*
6184  * NAME:     lpfc_disc_timeout
6185  *
6186  * FUNCTION: Fibre Channel driver discovery timeout routine.
6187  *
6188  * EXECUTION ENVIRONMENT: interrupt only
6189  *
6190  * CALLED FROM:
6191  *      Timer function
6192  *
6193  * RETURNS:
6194  *      none
6195  */
6196 /*****************************************************************************/
6197 void
6198 lpfc_disc_timeout(struct timer_list *t)
6199 {
6200         struct lpfc_vport *vport = from_timer(vport, t, fc_disctmo);
6201         struct lpfc_hba   *phba = vport->phba;
6202         uint32_t tmo_posted;
6203         unsigned long flags = 0;
6204
6205         if (unlikely(!phba))
6206                 return;
6207
6208         spin_lock_irqsave(&vport->work_port_lock, flags);
6209         tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
6210         if (!tmo_posted)
6211                 vport->work_port_events |= WORKER_DISC_TMO;
6212         spin_unlock_irqrestore(&vport->work_port_lock, flags);
6213
6214         if (!tmo_posted)
6215                 lpfc_worker_wake_up(phba);
6216         return;
6217 }
6218
6219 static void
6220 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
6221 {
6222         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6223         struct lpfc_hba  *phba = vport->phba;
6224         struct lpfc_sli  *psli = &phba->sli;
6225         struct lpfc_nodelist *ndlp, *next_ndlp;
6226         LPFC_MBOXQ_t *initlinkmbox;
6227         int rc, clrlaerr = 0;
6228
6229         if (!(vport->fc_flag & FC_DISC_TMO))
6230                 return;
6231
6232         spin_lock_irq(shost->host_lock);
6233         vport->fc_flag &= ~FC_DISC_TMO;
6234         spin_unlock_irq(shost->host_lock);
6235
6236         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6237                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
6238                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
6239
6240         switch (vport->port_state) {
6241
6242         case LPFC_LOCAL_CFG_LINK:
6243                 /*
6244                  * port_state is identically  LPFC_LOCAL_CFG_LINK while
6245                  * waiting for FAN timeout
6246                  */
6247                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
6248                                  "0221 FAN timeout\n");
6249
6250                 /* Start discovery by sending FLOGI, clean up old rpis */
6251                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6252                                          nlp_listp) {
6253                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
6254                                 continue;
6255                         if (ndlp->nlp_type & NLP_FABRIC) {
6256                                 /* Clean up the ndlp on Fabric connections */
6257                                 lpfc_drop_node(vport, ndlp);
6258
6259                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
6260                                 /* Fail outstanding IO now since device
6261                                  * is marked for PLOGI.
6262                                  */
6263                                 lpfc_unreg_rpi(vport, ndlp);
6264                         }
6265                 }
6266                 if (vport->port_state != LPFC_FLOGI) {
6267                         if (phba->sli_rev <= LPFC_SLI_REV3)
6268                                 lpfc_initial_flogi(vport);
6269                         else
6270                                 lpfc_issue_init_vfi(vport);
6271                         return;
6272                 }
6273                 break;
6274
6275         case LPFC_FDISC:
6276         case LPFC_FLOGI:
6277         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
6278                 /* Initial FLOGI timeout */
6279                 lpfc_printf_vlog(vport, KERN_ERR,
6280                                  LOG_TRACE_EVENT,
6281                                  "0222 Initial %s timeout\n",
6282                                  vport->vpi ? "FDISC" : "FLOGI");
6283
6284                 /* Assume no Fabric and go on with discovery.
6285                  * Check for outstanding ELS FLOGI to abort.
6286                  */
6287
6288                 /* FLOGI failed, so just use loop map to make discovery list */
6289                 lpfc_disc_list_loopmap(vport);
6290
6291                 /* Start discovery */
6292                 lpfc_disc_start(vport);
6293                 break;
6294
6295         case LPFC_FABRIC_CFG_LINK:
6296         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
6297            NameServer login */
6298                 lpfc_printf_vlog(vport, KERN_ERR,
6299                                  LOG_TRACE_EVENT,
6300                                  "0223 Timeout while waiting for "
6301                                  "NameServer login\n");
6302                 /* Next look for NameServer ndlp */
6303                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
6304                 if (ndlp)
6305                         lpfc_els_abort(phba, ndlp);
6306
6307                 /* ReStart discovery */
6308                 goto restart_disc;
6309
6310         case LPFC_NS_QRY:
6311         /* Check for wait for NameServer Rsp timeout */
6312                 lpfc_printf_vlog(vport, KERN_ERR,
6313                                  LOG_TRACE_EVENT,
6314                                  "0224 NameServer Query timeout "
6315                                  "Data: x%x x%x\n",
6316                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
6317
6318                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
6319                         /* Try it one more time */
6320                         vport->fc_ns_retry++;
6321                         vport->gidft_inp = 0;
6322                         rc = lpfc_issue_gidft(vport);
6323                         if (rc == 0)
6324                                 break;
6325                 }
6326                 vport->fc_ns_retry = 0;
6327
6328 restart_disc:
6329                 /*
6330                  * Discovery is over.
6331                  * set port_state to PORT_READY if SLI2.
6332                  * cmpl_reg_vpi will set port_state to READY for SLI3.
6333                  */
6334                 if (phba->sli_rev < LPFC_SLI_REV4) {
6335                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
6336                                 lpfc_issue_reg_vpi(phba, vport);
6337                         else  {
6338                                 lpfc_issue_clear_la(phba, vport);
6339                                 vport->port_state = LPFC_VPORT_READY;
6340                         }
6341                 }
6342
6343                 /* Setup and issue mailbox INITIALIZE LINK command */
6344                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6345                 if (!initlinkmbox) {
6346                         lpfc_printf_vlog(vport, KERN_ERR,
6347                                          LOG_TRACE_EVENT,
6348                                          "0206 Device Discovery "
6349                                          "completion error\n");
6350                         phba->link_state = LPFC_HBA_ERROR;
6351                         break;
6352                 }
6353
6354                 lpfc_linkdown(phba);
6355                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
6356                                phba->cfg_link_speed);
6357                 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
6358                 initlinkmbox->vport = vport;
6359                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
6360                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
6361                 lpfc_set_loopback_flag(phba);
6362                 if (rc == MBX_NOT_FINISHED)
6363                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
6364
6365                 break;
6366
6367         case LPFC_DISC_AUTH:
6368         /* Node Authentication timeout */
6369                 lpfc_printf_vlog(vport, KERN_ERR,
6370                                  LOG_TRACE_EVENT,
6371                                  "0227 Node Authentication timeout\n");
6372                 lpfc_disc_flush_list(vport);
6373
6374                 /*
6375                  * set port_state to PORT_READY if SLI2.
6376                  * cmpl_reg_vpi will set port_state to READY for SLI3.
6377                  */
6378                 if (phba->sli_rev < LPFC_SLI_REV4) {
6379                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
6380                                 lpfc_issue_reg_vpi(phba, vport);
6381                         else  { /* NPIV Not enabled */
6382                                 lpfc_issue_clear_la(phba, vport);
6383                                 vport->port_state = LPFC_VPORT_READY;
6384                         }
6385                 }
6386                 break;
6387
6388         case LPFC_VPORT_READY:
6389                 if (vport->fc_flag & FC_RSCN_MODE) {
6390                         lpfc_printf_vlog(vport, KERN_ERR,
6391                                          LOG_TRACE_EVENT,
6392                                          "0231 RSCN timeout Data: x%x "
6393                                          "x%x\n",
6394                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
6395
6396                         /* Cleanup any outstanding ELS commands */
6397                         lpfc_els_flush_cmd(vport);
6398
6399                         lpfc_els_flush_rscn(vport);
6400                         lpfc_disc_flush_list(vport);
6401                 }
6402                 break;
6403
6404         default:
6405                 lpfc_printf_vlog(vport, KERN_ERR,
6406                                  LOG_TRACE_EVENT,
6407                                  "0273 Unexpected discovery timeout, "
6408                                  "vport State x%x\n", vport->port_state);
6409                 break;
6410         }
6411
6412         switch (phba->link_state) {
6413         case LPFC_CLEAR_LA:
6414                                 /* CLEAR LA timeout */
6415                 lpfc_printf_vlog(vport, KERN_ERR,
6416                                  LOG_TRACE_EVENT,
6417                                  "0228 CLEAR LA timeout\n");
6418                 clrlaerr = 1;
6419                 break;
6420
6421         case LPFC_LINK_UP:
6422                 lpfc_issue_clear_la(phba, vport);
6423                 fallthrough;
6424         case LPFC_LINK_UNKNOWN:
6425         case LPFC_WARM_START:
6426         case LPFC_INIT_START:
6427         case LPFC_INIT_MBX_CMDS:
6428         case LPFC_LINK_DOWN:
6429         case LPFC_HBA_ERROR:
6430                 lpfc_printf_vlog(vport, KERN_ERR,
6431                                  LOG_TRACE_EVENT,
6432                                  "0230 Unexpected timeout, hba link "
6433                                  "state x%x\n", phba->link_state);
6434                 clrlaerr = 1;
6435                 break;
6436
6437         case LPFC_HBA_READY:
6438                 break;
6439         }
6440
6441         if (clrlaerr) {
6442                 lpfc_disc_flush_list(vport);
6443                 if (phba->sli_rev != LPFC_SLI_REV4) {
6444                         psli->sli3_ring[(LPFC_EXTRA_RING)].flag &=
6445                                 ~LPFC_STOP_IOCB_EVENT;
6446                         psli->sli3_ring[LPFC_FCP_RING].flag &=
6447                                 ~LPFC_STOP_IOCB_EVENT;
6448                 }
6449                 vport->port_state = LPFC_VPORT_READY;
6450         }
6451         return;
6452 }
6453
6454 /*
6455  * This routine handles processing a NameServer REG_LOGIN mailbox
6456  * command upon completion. It is setup in the LPFC_MBOXQ
6457  * as the completion routine when the command is
6458  * handed off to the SLI layer.
6459  */
6460 void
6461 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
6462 {
6463         MAILBOX_t *mb = &pmb->u.mb;
6464         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
6465         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
6466         struct lpfc_vport    *vport = pmb->vport;
6467
6468         pmb->ctx_buf = NULL;
6469         pmb->ctx_ndlp = NULL;
6470
6471         if (phba->sli_rev < LPFC_SLI_REV4)
6472                 ndlp->nlp_rpi = mb->un.varWords[0];
6473         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
6474         ndlp->nlp_type |= NLP_FABRIC;
6475         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
6476         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
6477                          "0004 rpi:%x DID:%x flg:%x %d x%px\n",
6478                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
6479                          kref_read(&ndlp->kref),
6480                          ndlp);
6481         /*
6482          * Start issuing Fabric-Device Management Interface (FDMI) command to
6483          * 0xfffffa (FDMI well known port).
6484          * DHBA -> DPRT -> RHBA -> RPA  (physical port)
6485          * DPRT -> RPRT (vports)
6486          */
6487         if (vport->port_type == LPFC_PHYSICAL_PORT) {
6488                 phba->link_flag &= ~LS_CT_VEN_RPA; /* For extra Vendor RPA */
6489                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA, 0);
6490         } else {
6491                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DPRT, 0);
6492         }
6493
6494
6495         /* decrement the node reference count held for this callback
6496          * function.
6497          */
6498         lpfc_nlp_put(ndlp);
6499         lpfc_mbuf_free(phba, mp->virt, mp->phys);
6500         kfree(mp);
6501         mempool_free(pmb, phba->mbox_mem_pool);
6502
6503         return;
6504 }
6505
6506 static int
6507 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
6508 {
6509         uint16_t *rpi = param;
6510
6511         return ndlp->nlp_rpi == *rpi;
6512 }
6513
6514 static int
6515 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
6516 {
6517         return memcmp(&ndlp->nlp_portname, param,
6518                       sizeof(ndlp->nlp_portname)) == 0;
6519 }
6520
6521 static struct lpfc_nodelist *
6522 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
6523 {
6524         struct lpfc_nodelist *ndlp;
6525
6526         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
6527                 if (filter(ndlp, param)) {
6528                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6529                                          "3185 FIND node filter %ps DID "
6530                                          "ndlp x%px did x%x flg x%x st x%x "
6531                                          "xri x%x type x%x rpi x%x\n",
6532                                          filter, ndlp, ndlp->nlp_DID,
6533                                          ndlp->nlp_flag, ndlp->nlp_state,
6534                                          ndlp->nlp_xri, ndlp->nlp_type,
6535                                          ndlp->nlp_rpi);
6536                         return ndlp;
6537                 }
6538         }
6539         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6540                          "3186 FIND node filter %ps NOT FOUND.\n", filter);
6541         return NULL;
6542 }
6543
6544 /*
6545  * This routine looks up the ndlp lists for the given RPI. If rpi found it
6546  * returns the node list element pointer else return NULL.
6547  */
6548 struct lpfc_nodelist *
6549 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6550 {
6551         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
6552 }
6553
6554 /*
6555  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
6556  * returns the node element list pointer else return NULL.
6557  */
6558 struct lpfc_nodelist *
6559 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
6560 {
6561         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6562         struct lpfc_nodelist *ndlp;
6563
6564         spin_lock_irq(shost->host_lock);
6565         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
6566         spin_unlock_irq(shost->host_lock);
6567         return ndlp;
6568 }
6569
6570 /*
6571  * This routine looks up the ndlp lists for the given RPI. If the rpi
6572  * is found, the routine returns the node element list pointer else
6573  * return NULL.
6574  */
6575 struct lpfc_nodelist *
6576 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6577 {
6578         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6579         struct lpfc_nodelist *ndlp;
6580         unsigned long flags;
6581
6582         spin_lock_irqsave(shost->host_lock, flags);
6583         ndlp = __lpfc_findnode_rpi(vport, rpi);
6584         spin_unlock_irqrestore(shost->host_lock, flags);
6585         return ndlp;
6586 }
6587
6588 /**
6589  * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
6590  * @phba: pointer to lpfc hba data structure.
6591  * @vpi: the physical host virtual N_Port identifier.
6592  *
6593  * This routine finds a vport on a HBA (referred by @phba) through a
6594  * @vpi. The function walks the HBA's vport list and returns the address
6595  * of the vport with the matching @vpi.
6596  *
6597  * Return code
6598  *    NULL - No vport with the matching @vpi found
6599  *    Otherwise - Address to the vport with the matching @vpi.
6600  **/
6601 struct lpfc_vport *
6602 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
6603 {
6604         struct lpfc_vport *vport;
6605         unsigned long flags;
6606         int i = 0;
6607
6608         /* The physical ports are always vpi 0 - translate is unnecessary. */
6609         if (vpi > 0) {
6610                 /*
6611                  * Translate the physical vpi to the logical vpi.  The
6612                  * vport stores the logical vpi.
6613                  */
6614                 for (i = 0; i <= phba->max_vpi; i++) {
6615                         if (vpi == phba->vpi_ids[i])
6616                                 break;
6617                 }
6618
6619                 if (i > phba->max_vpi) {
6620                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6621                                         "2936 Could not find Vport mapped "
6622                                         "to vpi %d\n", vpi);
6623                         return NULL;
6624                 }
6625         }
6626
6627         spin_lock_irqsave(&phba->port_list_lock, flags);
6628         list_for_each_entry(vport, &phba->port_list, listentry) {
6629                 if (vport->vpi == i) {
6630                         spin_unlock_irqrestore(&phba->port_list_lock, flags);
6631                         return vport;
6632                 }
6633         }
6634         spin_unlock_irqrestore(&phba->port_list_lock, flags);
6635         return NULL;
6636 }
6637
6638 struct lpfc_nodelist *
6639 lpfc_nlp_init(struct lpfc_vport *vport, uint32_t did)
6640 {
6641         struct lpfc_nodelist *ndlp;
6642         int rpi = LPFC_RPI_ALLOC_ERROR;
6643
6644         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6645                 rpi = lpfc_sli4_alloc_rpi(vport->phba);
6646                 if (rpi == LPFC_RPI_ALLOC_ERROR)
6647                         return NULL;
6648         }
6649
6650         ndlp = mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
6651         if (!ndlp) {
6652                 if (vport->phba->sli_rev == LPFC_SLI_REV4)
6653                         lpfc_sli4_free_rpi(vport->phba, rpi);
6654                 return NULL;
6655         }
6656
6657         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
6658
6659         spin_lock_init(&ndlp->lock);
6660
6661         lpfc_initialize_node(vport, ndlp, did);
6662         INIT_LIST_HEAD(&ndlp->nlp_listp);
6663         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6664                 ndlp->nlp_rpi = rpi;
6665                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
6666                                  "0007 Init New ndlp x%px, rpi:x%x DID:%x "
6667                                  "flg:x%x refcnt:%d\n",
6668                                  ndlp, ndlp->nlp_rpi, ndlp->nlp_DID,
6669                                  ndlp->nlp_flag, kref_read(&ndlp->kref));
6670
6671                 ndlp->active_rrqs_xri_bitmap =
6672                                 mempool_alloc(vport->phba->active_rrq_pool,
6673                                               GFP_KERNEL);
6674                 if (ndlp->active_rrqs_xri_bitmap)
6675                         memset(ndlp->active_rrqs_xri_bitmap, 0,
6676                                ndlp->phba->cfg_rrq_xri_bitmap_sz);
6677         }
6678
6679
6680
6681         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
6682                 "node init:       did:x%x",
6683                 ndlp->nlp_DID, 0, 0);
6684
6685         return ndlp;
6686 }
6687
6688 /* This routine releases all resources associated with a specifc NPort's ndlp
6689  * and mempool_free's the nodelist.
6690  */
6691 static void
6692 lpfc_nlp_release(struct kref *kref)
6693 {
6694         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
6695                                                   kref);
6696         struct lpfc_vport *vport = ndlp->vport;
6697
6698         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6699                 "node release:    did:x%x flg:x%x type:x%x",
6700                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
6701
6702         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6703                          "0279 %s: ndlp: x%px did %x refcnt:%d rpi:%x\n",
6704                          __func__, ndlp, ndlp->nlp_DID,
6705                          kref_read(&ndlp->kref), ndlp->nlp_rpi);
6706
6707         /* remove ndlp from action. */
6708         lpfc_cancel_retry_delay_tmo(vport, ndlp);
6709         lpfc_cleanup_node(vport, ndlp);
6710
6711         /* Not all ELS transactions have registered the RPI with the port.
6712          * In these cases the rpi usage is temporary and the node is
6713          * released when the WQE is completed.  Catch this case to free the
6714          * RPI to the pool.  Because this node is in the release path, a lock
6715          * is unnecessary.  All references are gone and the node has been
6716          * dequeued.
6717          */
6718         if (ndlp->nlp_flag & NLP_RELEASE_RPI) {
6719                 if (ndlp->nlp_rpi != LPFC_RPI_ALLOC_ERROR &&
6720                     !(ndlp->nlp_flag & (NLP_RPI_REGISTERED | NLP_UNREG_INP))) {
6721                         lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi);
6722                         ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
6723                 }
6724         }
6725
6726         /* The node is not freed back to memory, it is released to a pool so
6727          * the node fields need to be cleaned up.
6728          */
6729         ndlp->vport = NULL;
6730         ndlp->nlp_state = NLP_STE_FREED_NODE;
6731         ndlp->nlp_flag = 0;
6732         ndlp->fc4_xpt_flags = 0;
6733
6734         /* free ndlp memory for final ndlp release */
6735         kfree(ndlp->lat_data);
6736         if (ndlp->phba->sli_rev == LPFC_SLI_REV4)
6737                 mempool_free(ndlp->active_rrqs_xri_bitmap,
6738                                 ndlp->phba->active_rrq_pool);
6739         mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
6740 }
6741
6742 /* This routine bumps the reference count for a ndlp structure to ensure
6743  * that one discovery thread won't free a ndlp while another discovery thread
6744  * is using it.
6745  */
6746 struct lpfc_nodelist *
6747 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
6748 {
6749         unsigned long flags;
6750
6751         if (ndlp) {
6752                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6753                         "node get:        did:x%x flg:x%x refcnt:x%x",
6754                         ndlp->nlp_DID, ndlp->nlp_flag,
6755                         kref_read(&ndlp->kref));
6756
6757                 /* The check of ndlp usage to prevent incrementing the
6758                  * ndlp reference count that is in the process of being
6759                  * released.
6760                  */
6761                 spin_lock_irqsave(&ndlp->lock, flags);
6762                 if (!kref_get_unless_zero(&ndlp->kref)) {
6763                         spin_unlock_irqrestore(&ndlp->lock, flags);
6764                         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
6765                                 "0276 %s: ndlp:x%px refcnt:%d\n",
6766                                 __func__, (void *)ndlp, kref_read(&ndlp->kref));
6767                         return NULL;
6768                 }
6769                 spin_unlock_irqrestore(&ndlp->lock, flags);
6770         } else {
6771                 WARN_ONCE(!ndlp, "**** %s, get ref on NULL ndlp!", __func__);
6772         }
6773
6774         return ndlp;
6775 }
6776
6777 /* This routine decrements the reference count for a ndlp structure. If the
6778  * count goes to 0, this indicates the associated nodelist should be freed.
6779  */
6780 int
6781 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
6782 {
6783         if (ndlp) {
6784                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6785                                 "node put:        did:x%x flg:x%x refcnt:x%x",
6786                                 ndlp->nlp_DID, ndlp->nlp_flag,
6787                                 kref_read(&ndlp->kref));
6788         } else {
6789                 WARN_ONCE(!ndlp, "**** %s, put ref on NULL ndlp!", __func__);
6790         }
6791
6792         return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0;
6793 }
6794
6795 /* This routine free's the specified nodelist if it is not in use
6796  * by any other discovery thread. This routine returns 1 if the
6797  * ndlp has been freed. A return value of 0 indicates the ndlp is
6798  * not yet been released.
6799  */
6800 int
6801 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
6802 {
6803         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6804                 "node not used:   did:x%x flg:x%x refcnt:x%x",
6805                 ndlp->nlp_DID, ndlp->nlp_flag,
6806                 kref_read(&ndlp->kref));
6807
6808         if (kref_read(&ndlp->kref) == 1)
6809                 if (lpfc_nlp_put(ndlp))
6810                         return 1;
6811         return 0;
6812 }
6813
6814 /**
6815  * lpfc_fcf_inuse - Check if FCF can be unregistered.
6816  * @phba: Pointer to hba context object.
6817  *
6818  * This function iterate through all FC nodes associated
6819  * will all vports to check if there is any node with
6820  * fc_rports associated with it. If there is an fc_rport
6821  * associated with the node, then the node is either in
6822  * discovered state or its devloss_timer is pending.
6823  */
6824 static int
6825 lpfc_fcf_inuse(struct lpfc_hba *phba)
6826 {
6827         struct lpfc_vport **vports;
6828         int i, ret = 0;
6829         struct lpfc_nodelist *ndlp;
6830         struct Scsi_Host  *shost;
6831
6832         vports = lpfc_create_vport_work_array(phba);
6833
6834         /* If driver cannot allocate memory, indicate fcf is in use */
6835         if (!vports)
6836                 return 1;
6837
6838         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6839                 shost = lpfc_shost_from_vport(vports[i]);
6840                 spin_lock_irq(shost->host_lock);
6841                 /*
6842                  * IF the CVL_RCVD bit is not set then we have sent the
6843                  * flogi.
6844                  * If dev_loss fires while we are waiting we do not want to
6845                  * unreg the fcf.
6846                  */
6847                 if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) {
6848                         spin_unlock_irq(shost->host_lock);
6849                         ret =  1;
6850                         goto out;
6851                 }
6852                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
6853                         if (ndlp->rport &&
6854                           (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
6855                                 ret = 1;
6856                                 spin_unlock_irq(shost->host_lock);
6857                                 goto out;
6858                         } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
6859                                 ret = 1;
6860                                 lpfc_printf_log(phba, KERN_INFO,
6861                                                 LOG_NODE | LOG_DISCOVERY,
6862                                                 "2624 RPI %x DID %x flag %x "
6863                                                 "still logged in\n",
6864                                                 ndlp->nlp_rpi, ndlp->nlp_DID,
6865                                                 ndlp->nlp_flag);
6866                         }
6867                 }
6868                 spin_unlock_irq(shost->host_lock);
6869         }
6870 out:
6871         lpfc_destroy_vport_work_array(phba, vports);
6872         return ret;
6873 }
6874
6875 /**
6876  * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
6877  * @phba: Pointer to hba context object.
6878  * @mboxq: Pointer to mailbox object.
6879  *
6880  * This function frees memory associated with the mailbox command.
6881  */
6882 void
6883 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6884 {
6885         struct lpfc_vport *vport = mboxq->vport;
6886         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6887
6888         if (mboxq->u.mb.mbxStatus) {
6889                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6890                                 "2555 UNREG_VFI mbxStatus error x%x "
6891                                 "HBA state x%x\n",
6892                                 mboxq->u.mb.mbxStatus, vport->port_state);
6893         }
6894         spin_lock_irq(shost->host_lock);
6895         phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
6896         spin_unlock_irq(shost->host_lock);
6897         mempool_free(mboxq, phba->mbox_mem_pool);
6898         return;
6899 }
6900
6901 /**
6902  * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
6903  * @phba: Pointer to hba context object.
6904  * @mboxq: Pointer to mailbox object.
6905  *
6906  * This function frees memory associated with the mailbox command.
6907  */
6908 static void
6909 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6910 {
6911         struct lpfc_vport *vport = mboxq->vport;
6912
6913         if (mboxq->u.mb.mbxStatus) {
6914                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6915                                 "2550 UNREG_FCFI mbxStatus error x%x "
6916                                 "HBA state x%x\n",
6917                                 mboxq->u.mb.mbxStatus, vport->port_state);
6918         }
6919         mempool_free(mboxq, phba->mbox_mem_pool);
6920         return;
6921 }
6922
6923 /**
6924  * lpfc_unregister_fcf_prep - Unregister fcf record preparation
6925  * @phba: Pointer to hba context object.
6926  *
6927  * This function prepare the HBA for unregistering the currently registered
6928  * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
6929  * VFIs.
6930  */
6931 int
6932 lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
6933 {
6934         struct lpfc_vport **vports;
6935         struct lpfc_nodelist *ndlp;
6936         struct Scsi_Host *shost;
6937         int i = 0, rc;
6938
6939         /* Unregister RPIs */
6940         if (lpfc_fcf_inuse(phba))
6941                 lpfc_unreg_hba_rpis(phba);
6942
6943         /* At this point, all discovery is aborted */
6944         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
6945
6946         /* Unregister VPIs */
6947         vports = lpfc_create_vport_work_array(phba);
6948         if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
6949                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6950                         /* Stop FLOGI/FDISC retries */
6951                         ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
6952                         if (ndlp)
6953                                 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
6954                         lpfc_cleanup_pending_mbox(vports[i]);
6955                         if (phba->sli_rev == LPFC_SLI_REV4)
6956                                 lpfc_sli4_unreg_all_rpis(vports[i]);
6957                         lpfc_mbx_unreg_vpi(vports[i]);
6958                         shost = lpfc_shost_from_vport(vports[i]);
6959                         spin_lock_irq(shost->host_lock);
6960                         vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6961                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
6962                         spin_unlock_irq(shost->host_lock);
6963                 }
6964         lpfc_destroy_vport_work_array(phba, vports);
6965         if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) {
6966                 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
6967                 if (ndlp)
6968                         lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
6969                 lpfc_cleanup_pending_mbox(phba->pport);
6970                 if (phba->sli_rev == LPFC_SLI_REV4)
6971                         lpfc_sli4_unreg_all_rpis(phba->pport);
6972                 lpfc_mbx_unreg_vpi(phba->pport);
6973                 shost = lpfc_shost_from_vport(phba->pport);
6974                 spin_lock_irq(shost->host_lock);
6975                 phba->pport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6976                 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED;
6977                 spin_unlock_irq(shost->host_lock);
6978         }
6979
6980         /* Cleanup any outstanding ELS commands */
6981         lpfc_els_flush_all_cmd(phba);
6982
6983         /* Unregister the physical port VFI */
6984         rc = lpfc_issue_unreg_vfi(phba->pport);
6985         return rc;
6986 }
6987
6988 /**
6989  * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
6990  * @phba: Pointer to hba context object.
6991  *
6992  * This function issues synchronous unregister FCF mailbox command to HBA to
6993  * unregister the currently registered FCF record. The driver does not reset
6994  * the driver FCF usage state flags.
6995  *
6996  * Return 0 if successfully issued, none-zero otherwise.
6997  */
6998 int
6999 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
7000 {
7001         LPFC_MBOXQ_t *mbox;
7002         int rc;
7003
7004         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
7005         if (!mbox) {
7006                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7007                                 "2551 UNREG_FCFI mbox allocation failed"
7008                                 "HBA state x%x\n", phba->pport->port_state);
7009                 return -ENOMEM;
7010         }
7011         lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
7012         mbox->vport = phba->pport;
7013         mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
7014         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
7015
7016         if (rc == MBX_NOT_FINISHED) {
7017                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7018                                 "2552 Unregister FCFI command failed rc x%x "
7019                                 "HBA state x%x\n",
7020                                 rc, phba->pport->port_state);
7021                 return -EINVAL;
7022         }
7023         return 0;
7024 }
7025
7026 /**
7027  * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
7028  * @phba: Pointer to hba context object.
7029  *
7030  * This function unregisters the currently reigstered FCF. This function
7031  * also tries to find another FCF for discovery by rescan the HBA FCF table.
7032  */
7033 void
7034 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
7035 {
7036         int rc;
7037
7038         /* Preparation for unregistering fcf */
7039         rc = lpfc_unregister_fcf_prep(phba);
7040         if (rc) {
7041                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7042                                 "2748 Failed to prepare for unregistering "
7043                                 "HBA's FCF record: rc=%d\n", rc);
7044                 return;
7045         }
7046
7047         /* Now, unregister FCF record and reset HBA FCF state */
7048         rc = lpfc_sli4_unregister_fcf(phba);
7049         if (rc)
7050                 return;
7051         /* Reset HBA FCF states after successful unregister FCF */
7052         phba->fcf.fcf_flag = 0;
7053         phba->fcf.current_rec.flag = 0;
7054
7055         /*
7056          * If driver is not unloading, check if there is any other
7057          * FCF record that can be used for discovery.
7058          */
7059         if ((phba->pport->load_flag & FC_UNLOADING) ||
7060             (phba->link_state < LPFC_LINK_UP))
7061                 return;
7062
7063         /* This is considered as the initial FCF discovery scan */
7064         spin_lock_irq(&phba->hbalock);
7065         phba->fcf.fcf_flag |= FCF_INIT_DISC;
7066         spin_unlock_irq(&phba->hbalock);
7067
7068         /* Reset FCF roundrobin bmask for new discovery */
7069         lpfc_sli4_clear_fcf_rr_bmask(phba);
7070
7071         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
7072
7073         if (rc) {
7074                 spin_lock_irq(&phba->hbalock);
7075                 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
7076                 spin_unlock_irq(&phba->hbalock);
7077                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7078                                 "2553 lpfc_unregister_unused_fcf failed "
7079                                 "to read FCF record HBA state x%x\n",
7080                                 phba->pport->port_state);
7081         }
7082 }
7083
7084 /**
7085  * lpfc_unregister_fcf - Unregister the currently registered fcf record
7086  * @phba: Pointer to hba context object.
7087  *
7088  * This function just unregisters the currently reigstered FCF. It does not
7089  * try to find another FCF for discovery.
7090  */
7091 void
7092 lpfc_unregister_fcf(struct lpfc_hba *phba)
7093 {
7094         int rc;
7095
7096         /* Preparation for unregistering fcf */
7097         rc = lpfc_unregister_fcf_prep(phba);
7098         if (rc) {
7099                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7100                                 "2749 Failed to prepare for unregistering "
7101                                 "HBA's FCF record: rc=%d\n", rc);
7102                 return;
7103         }
7104
7105         /* Now, unregister FCF record and reset HBA FCF state */
7106         rc = lpfc_sli4_unregister_fcf(phba);
7107         if (rc)
7108                 return;
7109         /* Set proper HBA FCF states after successful unregister FCF */
7110         spin_lock_irq(&phba->hbalock);
7111         phba->fcf.fcf_flag &= ~FCF_REGISTERED;
7112         spin_unlock_irq(&phba->hbalock);
7113 }
7114
7115 /**
7116  * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
7117  * @phba: Pointer to hba context object.
7118  *
7119  * This function check if there are any connected remote port for the FCF and
7120  * if all the devices are disconnected, this function unregister FCFI.
7121  * This function also tries to use another FCF for discovery.
7122  */
7123 void
7124 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
7125 {
7126         /*
7127          * If HBA is not running in FIP mode, if HBA does not support
7128          * FCoE, if FCF discovery is ongoing, or if FCF has not been
7129          * registered, do nothing.
7130          */
7131         spin_lock_irq(&phba->hbalock);
7132         if (!(phba->hba_flag & HBA_FCOE_MODE) ||
7133             !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
7134             !(phba->hba_flag & HBA_FIP_SUPPORT) ||
7135             (phba->fcf.fcf_flag & FCF_DISCOVERY) ||
7136             (phba->pport->port_state == LPFC_FLOGI)) {
7137                 spin_unlock_irq(&phba->hbalock);
7138                 return;
7139         }
7140         spin_unlock_irq(&phba->hbalock);
7141
7142         if (lpfc_fcf_inuse(phba))
7143                 return;
7144
7145         lpfc_unregister_fcf_rescan(phba);
7146 }
7147
7148 /**
7149  * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
7150  * @phba: Pointer to hba context object.
7151  * @buff: Buffer containing the FCF connection table as in the config
7152  *         region.
7153  * This function create driver data structure for the FCF connection
7154  * record table read from config region 23.
7155  */
7156 static void
7157 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
7158         uint8_t *buff)
7159 {
7160         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
7161         struct lpfc_fcf_conn_hdr *conn_hdr;
7162         struct lpfc_fcf_conn_rec *conn_rec;
7163         uint32_t record_count;
7164         int i;
7165
7166         /* Free the current connect table */
7167         list_for_each_entry_safe(conn_entry, next_conn_entry,
7168                 &phba->fcf_conn_rec_list, list) {
7169                 list_del_init(&conn_entry->list);
7170                 kfree(conn_entry);
7171         }
7172
7173         conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
7174         record_count = conn_hdr->length * sizeof(uint32_t)/
7175                 sizeof(struct lpfc_fcf_conn_rec);
7176
7177         conn_rec = (struct lpfc_fcf_conn_rec *)
7178                 (buff + sizeof(struct lpfc_fcf_conn_hdr));
7179
7180         for (i = 0; i < record_count; i++) {
7181                 if (!(conn_rec[i].flags & FCFCNCT_VALID))
7182                         continue;
7183                 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
7184                         GFP_KERNEL);
7185                 if (!conn_entry) {
7186                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7187                                         "2566 Failed to allocate connection"
7188                                         " table entry\n");
7189                         return;
7190                 }
7191
7192                 memcpy(&conn_entry->conn_rec, &conn_rec[i],
7193                         sizeof(struct lpfc_fcf_conn_rec));
7194                 list_add_tail(&conn_entry->list,
7195                         &phba->fcf_conn_rec_list);
7196         }
7197
7198         if (!list_empty(&phba->fcf_conn_rec_list)) {
7199                 i = 0;
7200                 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list,
7201                                     list) {
7202                         conn_rec = &conn_entry->conn_rec;
7203                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7204                                         "3345 FCF connection list rec[%02d]: "
7205                                         "flags:x%04x, vtag:x%04x, "
7206                                         "fabric_name:x%02x:%02x:%02x:%02x:"
7207                                         "%02x:%02x:%02x:%02x, "
7208                                         "switch_name:x%02x:%02x:%02x:%02x:"
7209                                         "%02x:%02x:%02x:%02x\n", i++,
7210                                         conn_rec->flags, conn_rec->vlan_tag,
7211                                         conn_rec->fabric_name[0],
7212                                         conn_rec->fabric_name[1],
7213                                         conn_rec->fabric_name[2],
7214                                         conn_rec->fabric_name[3],
7215                                         conn_rec->fabric_name[4],
7216                                         conn_rec->fabric_name[5],
7217                                         conn_rec->fabric_name[6],
7218                                         conn_rec->fabric_name[7],
7219                                         conn_rec->switch_name[0],
7220                                         conn_rec->switch_name[1],
7221                                         conn_rec->switch_name[2],
7222                                         conn_rec->switch_name[3],
7223                                         conn_rec->switch_name[4],
7224                                         conn_rec->switch_name[5],
7225                                         conn_rec->switch_name[6],
7226                                         conn_rec->switch_name[7]);
7227                 }
7228         }
7229 }
7230
7231 /**
7232  * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
7233  * @phba: Pointer to hba context object.
7234  * @buff: Buffer containing the FCoE parameter data structure.
7235  *
7236  *  This function update driver data structure with config
7237  *  parameters read from config region 23.
7238  */
7239 static void
7240 lpfc_read_fcoe_param(struct lpfc_hba *phba,
7241                         uint8_t *buff)
7242 {
7243         struct lpfc_fip_param_hdr *fcoe_param_hdr;
7244         struct lpfc_fcoe_params *fcoe_param;
7245
7246         fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
7247                 buff;
7248         fcoe_param = (struct lpfc_fcoe_params *)
7249                 (buff + sizeof(struct lpfc_fip_param_hdr));
7250
7251         if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
7252                 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
7253                 return;
7254
7255         if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
7256                 phba->valid_vlan = 1;
7257                 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
7258                         0xFFF;
7259         }
7260
7261         phba->fc_map[0] = fcoe_param->fc_map[0];
7262         phba->fc_map[1] = fcoe_param->fc_map[1];
7263         phba->fc_map[2] = fcoe_param->fc_map[2];
7264         return;
7265 }
7266
7267 /**
7268  * lpfc_get_rec_conf23 - Get a record type in config region data.
7269  * @buff: Buffer containing config region 23 data.
7270  * @size: Size of the data buffer.
7271  * @rec_type: Record type to be searched.
7272  *
7273  * This function searches config region data to find the beginning
7274  * of the record specified by record_type. If record found, this
7275  * function return pointer to the record else return NULL.
7276  */
7277 static uint8_t *
7278 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
7279 {
7280         uint32_t offset = 0, rec_length;
7281
7282         if ((buff[0] == LPFC_REGION23_LAST_REC) ||
7283                 (size < sizeof(uint32_t)))
7284                 return NULL;
7285
7286         rec_length = buff[offset + 1];
7287
7288         /*
7289          * One TLV record has one word header and number of data words
7290          * specified in the rec_length field of the record header.
7291          */
7292         while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
7293                 <= size) {
7294                 if (buff[offset] == rec_type)
7295                         return &buff[offset];
7296
7297                 if (buff[offset] == LPFC_REGION23_LAST_REC)
7298                         return NULL;
7299
7300                 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
7301                 rec_length = buff[offset + 1];
7302         }
7303         return NULL;
7304 }
7305
7306 /**
7307  * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
7308  * @phba: Pointer to lpfc_hba data structure.
7309  * @buff: Buffer containing config region 23 data.
7310  * @size: Size of the data buffer.
7311  *
7312  * This function parses the FCoE config parameters in config region 23 and
7313  * populate driver data structure with the parameters.
7314  */
7315 void
7316 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
7317                 uint8_t *buff,
7318                 uint32_t size)
7319 {
7320         uint32_t offset = 0;
7321         uint8_t *rec_ptr;
7322
7323         /*
7324          * If data size is less than 2 words signature and version cannot be
7325          * verified.
7326          */
7327         if (size < 2*sizeof(uint32_t))
7328                 return;
7329
7330         /* Check the region signature first */
7331         if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
7332                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7333                         "2567 Config region 23 has bad signature\n");
7334                 return;
7335         }
7336
7337         offset += 4;
7338
7339         /* Check the data structure version */
7340         if (buff[offset] != LPFC_REGION23_VERSION) {
7341                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7342                                 "2568 Config region 23 has bad version\n");
7343                 return;
7344         }
7345         offset += 4;
7346
7347         /* Read FCoE param record */
7348         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
7349                         size - offset, FCOE_PARAM_TYPE);
7350         if (rec_ptr)
7351                 lpfc_read_fcoe_param(phba, rec_ptr);
7352
7353         /* Read FCF connection table */
7354         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
7355                 size - offset, FCOE_CONN_TBL_TYPE);
7356         if (rec_ptr)
7357                 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
7358
7359 }