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) 2017-2020 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
  76 void
  77 lpfc_terminate_rport_io(struct fc_rport *rport)
  78 {
  79         struct lpfc_rport_data *rdata;
  80         struct lpfc_nodelist * ndlp;
  81         struct lpfc_hba *phba;
  82
  83         rdata = rport->dd_data;
  84         ndlp = rdata->pnode;
  85
  86         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
  87                 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
  88                         printk(KERN_ERR "Cannot find remote node"
  89                         " to terminate I/O Data x%x\n",
  90                         rport->port_id);
  91                 return;
  92         }
  93
  94         phba  = ndlp->phba;
  95
  96         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
  97                 "rport terminate: sid:x%x did:x%x flg:x%x",
  98                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
  99
 100         if (ndlp->nlp_sid != NLP_NO_SID) {
 101                 lpfc_sli_abort_iocb(ndlp->vport,
 102                         &phba->sli.sli3_ring[LPFC_FCP_RING],
 103                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 104         }
 105 }
 106
 107 /*
 108  * This function will be called when dev_loss_tmo fire.
 109  */
 110 void
 111 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
 112 {
 113         struct lpfc_rport_data *rdata;
 114         struct lpfc_nodelist * ndlp;
 115         struct lpfc_vport *vport;
 116         struct Scsi_Host *shost;
 117         struct lpfc_hba   *phba;
 118         struct lpfc_work_evt *evtp;
 119         int  put_node;
 120         int  put_rport;
 121         unsigned long iflags;
 122
 123         rdata = rport->dd_data;
 124         ndlp = rdata->pnode;
 125         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
 126                 return;
 127
 128         vport = ndlp->vport;
 129         phba  = vport->phba;
 130
 131         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 132                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
 133                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 134
 135         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 136                          "3181 dev_loss_callbk x%06x, rport x%px flg x%x\n",
 137                          ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag);
 138
 139         /* Don't defer this if we are in the process of deleting the vport
 140          * or unloading the driver. The unload will cleanup the node
 141          * appropriately we just need to cleanup the ndlp rport info here.
 142          */
 143         if (vport->load_flag & FC_UNLOADING) {
 144                 put_node = rdata->pnode != NULL;
 145                 put_rport = ndlp->rport != NULL;
 146                 rdata->pnode = NULL;
 147                 ndlp->rport = NULL;
 148                 if (put_node)
 149                         lpfc_nlp_put(ndlp);
 150                 if (put_rport)
 151                         put_device(&rport->dev);
 152                 return;
 153         }
 154
 155         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 156                 return;
 157
 158         if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn))
 159                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 160                                  "6789 rport name %llx != node port name %llx",
 161                                  rport->port_name,
 162                                  wwn_to_u64(ndlp->nlp_portname.u.wwn));
 163
 164         evtp = &ndlp->dev_loss_evt;
 165
 166         if (!list_empty(&evtp->evt_listp)) {
 167                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 168                                  "6790 rport name %llx dev_loss_evt pending",
 169                                  rport->port_name);
 170                 return;
 171         }
 172
 173         shost = lpfc_shost_from_vport(vport);
 174         spin_lock_irqsave(shost->host_lock, iflags);
 175         ndlp->nlp_flag |= NLP_IN_DEV_LOSS;
 176         spin_unlock_irqrestore(shost->host_lock, iflags);
 177
 178         /* We need to hold the node by incrementing the reference
 179          * count until this queued work is done
 180          */
 181         evtp->evt_arg1  = lpfc_nlp_get(ndlp);
 182
 183         spin_lock_irqsave(&phba->hbalock, iflags);
 184         if (evtp->evt_arg1) {
 185                 evtp->evt = LPFC_EVT_DEV_LOSS;
 186                 list_add_tail(&evtp->evt_listp, &phba->work_list);
 187                 lpfc_worker_wake_up(phba);
 188         }
 189         spin_unlock_irqrestore(&phba->hbalock, iflags);
 190
 191         return;
 192 }
 193
 194 /**
 195  * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler
 196  * @ndlp: Pointer to remote node object.
 197  *
 198  * This function is called from the worker thread when devloss timeout timer
 199  * expires. For SLI4 host, this routine shall return 1 when at lease one
 200  * remote node, including this @ndlp, is still in use of FCF; otherwise, this
 201  * routine shall return 0 when there is no remote node is still in use of FCF
 202  * when devloss timeout happened to this @ndlp.
 203  **/
 204 static int
 205 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 206 {
 207         struct lpfc_rport_data *rdata;
 208         struct fc_rport   *rport;
 209         struct lpfc_vport *vport;
 210         struct lpfc_hba   *phba;
 211         struct Scsi_Host  *shost;
 212         uint8_t *name;
 213         int  put_node;
 214         int warn_on = 0;
 215         int fcf_inuse = 0;
 216         unsigned long iflags;
 217
 218         rport = ndlp->rport;
 219         vport = ndlp->vport;
 220         shost = lpfc_shost_from_vport(vport);
 221
 222         spin_lock_irqsave(shost->host_lock, iflags);
 223         ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
 224         spin_unlock_irqrestore(shost->host_lock, iflags);
 225
 226         if (!rport)
 227                 return fcf_inuse;
 228
 229         name = (uint8_t *) &ndlp->nlp_portname;
 230         phba  = vport->phba;
 231
 232         if (phba->sli_rev == LPFC_SLI_REV4)
 233                 fcf_inuse = lpfc_fcf_inuse(phba);
 234
 235         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 236                 "rport devlosstmo:did:x%x type:x%x id:x%x",
 237                 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
 238
 239         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 240                          "3182 dev_loss_tmo_handler x%06x, rport x%px flg x%x\n",
 241                          ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag);
 242
 243         /*
 244          * lpfc_nlp_remove if reached with dangling rport drops the
 245          * reference. To make sure that does not happen clear rport
 246          * pointer in ndlp before lpfc_nlp_put.
 247          */
 248         rdata = rport->dd_data;
 249
 250         /* Don't defer this if we are in the process of deleting the vport
 251          * or unloading the driver. The unload will cleanup the node
 252          * appropriately we just need to cleanup the ndlp rport info here.
 253          */
 254         if (vport->load_flag & FC_UNLOADING) {
 255                 if (ndlp->nlp_sid != NLP_NO_SID) {
 256                         /* flush the target */
 257                         lpfc_sli_abort_iocb(vport,
 258                                             &phba->sli.sli3_ring[LPFC_FCP_RING],
 259                                             ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 260                 }
 261                 put_node = rdata->pnode != NULL;
 262                 rdata->pnode = NULL;
 263                 ndlp->rport = NULL;
 264                 if (put_node)
 265                         lpfc_nlp_put(ndlp);
 266                 put_device(&rport->dev);
 267
 268                 return fcf_inuse;
 269         }
 270
 271         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
 272                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 273                                  "0284 Devloss timeout Ignored on "
 274                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 275                                  "NPort x%x\n",
 276                                  *name, *(name+1), *(name+2), *(name+3),
 277                                  *(name+4), *(name+5), *(name+6), *(name+7),
 278                                  ndlp->nlp_DID);
 279                 return fcf_inuse;
 280         }
 281
 282         put_node = rdata->pnode != NULL;
 283         rdata->pnode = NULL;
 284         ndlp->rport = NULL;
 285         if (put_node)
 286                 lpfc_nlp_put(ndlp);
 287         put_device(&rport->dev);
 288
 289         if (ndlp->nlp_type & NLP_FABRIC)
 290                 return fcf_inuse;
 291
 292         if (ndlp->nlp_sid != NLP_NO_SID) {
 293                 warn_on = 1;
 294                 lpfc_sli_abort_iocb(vport, &phba->sli.sli3_ring[LPFC_FCP_RING],
 295                                     ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 296         }
 297
 298         if (warn_on) {
 299                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 300                                  "0203 Devloss timeout on "
 301                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 302                                  "NPort x%06x Data: x%x x%x x%x\n",
 303                                  *name, *(name+1), *(name+2), *(name+3),
 304                                  *(name+4), *(name+5), *(name+6), *(name+7),
 305                                  ndlp->nlp_DID, ndlp->nlp_flag,
 306                                  ndlp->nlp_state, ndlp->nlp_rpi);
 307         } else {
 308                 lpfc_printf_vlog(vport, KERN_INFO, LOG_TRACE_EVENT,
 309                                  "0204 Devloss timeout on "
 310                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 311                                  "NPort x%06x Data: x%x x%x x%x\n",
 312                                  *name, *(name+1), *(name+2), *(name+3),
 313                                  *(name+4), *(name+5), *(name+6), *(name+7),
 314                                  ndlp->nlp_DID, ndlp->nlp_flag,
 315                                  ndlp->nlp_state, ndlp->nlp_rpi);
 316         }
 317
 318         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
 319             !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 320             (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
 321             (ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) &&
 322             (ndlp->nlp_state != NLP_STE_PRLI_ISSUE))
 323                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 324
 325         return fcf_inuse;
 326 }
 327
 328 /**
 329  * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler
 330  * @phba: Pointer to hba context object.
 331  * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler.
 332  * @nlp_did: remote node identifer with devloss timeout.
 333  *
 334  * This function is called from the worker thread after invoking devloss
 335  * timeout handler and releasing the reference count for the ndlp with
 336  * which the devloss timeout was handled for SLI4 host. For the devloss
 337  * timeout of the last remote node which had been in use of FCF, when this
 338  * routine is invoked, it shall be guaranteed that none of the remote are
 339  * in-use of FCF. When devloss timeout to the last remote using the FCF,
 340  * if the FIP engine is neither in FCF table scan process nor roundrobin
 341  * failover process, the in-use FCF shall be unregistered. If the FIP
 342  * engine is in FCF discovery process, the devloss timeout state shall
 343  * be set for either the FCF table scan process or roundrobin failover
 344  * process to unregister the in-use FCF.
 345  **/
 346 static void
 347 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse,
 348                                     uint32_t nlp_did)
 349 {
 350         /* If devloss timeout happened to a remote node when FCF had no
 351          * longer been in-use, do nothing.
 352          */
 353         if (!fcf_inuse)
 354                 return;
 355
 356         if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) {
 357                 spin_lock_irq(&phba->hbalock);
 358                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
 359                         if (phba->hba_flag & HBA_DEVLOSS_TMO) {
 360                                 spin_unlock_irq(&phba->hbalock);
 361                                 return;
 362                         }
 363                         phba->hba_flag |= HBA_DEVLOSS_TMO;
 364                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 365                                         "2847 Last remote node (x%x) using "
 366                                         "FCF devloss tmo\n", nlp_did);
 367                 }
 368                 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) {
 369                         spin_unlock_irq(&phba->hbalock);
 370                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 371                                         "2868 Devloss tmo to FCF rediscovery "
 372                                         "in progress\n");
 373                         return;
 374                 }
 375                 if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) {
 376                         spin_unlock_irq(&phba->hbalock);
 377                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 378                                         "2869 Devloss tmo to idle FIP engine, "
 379                                         "unreg in-use FCF and rescan.\n");
 380                         /* Unregister in-use FCF and rescan */
 381                         lpfc_unregister_fcf_rescan(phba);
 382                         return;
 383                 }
 384                 spin_unlock_irq(&phba->hbalock);
 385                 if (phba->hba_flag & FCF_TS_INPROG)
 386                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 387                                         "2870 FCF table scan in progress\n");
 388                 if (phba->hba_flag & FCF_RR_INPROG)
 389                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 390                                         "2871 FLOGI roundrobin FCF failover "
 391                                         "in progress\n");
 392         }
 393         lpfc_unregister_unused_fcf(phba);
 394 }
 395
 396 /**
 397  * lpfc_alloc_fast_evt - Allocates data structure for posting event
 398  * @phba: Pointer to hba context object.
 399  *
 400  * This function is called from the functions which need to post
 401  * events from interrupt context. This function allocates data
 402  * structure required for posting event. It also keeps track of
 403  * number of events pending and prevent event storm when there are
 404  * too many events.
 405  **/
 406 struct lpfc_fast_path_event *
 407 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
 408         struct lpfc_fast_path_event *ret;
 409
 410         /* If there are lot of fast event do not exhaust memory due to this */
 411         if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
 412                 return NULL;
 413
 414         ret = kzalloc(sizeof(struct lpfc_fast_path_event),
 415                         GFP_ATOMIC);
 416         if (ret) {
 417                 atomic_inc(&phba->fast_event_count);
 418                 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
 419                 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
 420         }
 421         return ret;
 422 }
 423
 424 /**
 425  * lpfc_free_fast_evt - Frees event data structure
 426  * @phba: Pointer to hba context object.
 427  * @evt:  Event object which need to be freed.
 428  *
 429  * This function frees the data structure required for posting
 430  * events.
 431  **/
 432 void
 433 lpfc_free_fast_evt(struct lpfc_hba *phba,
 434                 struct lpfc_fast_path_event *evt) {
 435
 436         atomic_dec(&phba->fast_event_count);
 437         kfree(evt);
 438 }
 439
 440 /**
 441  * lpfc_send_fastpath_evt - Posts events generated from fast path
 442  * @phba: Pointer to hba context object.
 443  * @evtp: Event data structure.
 444  *
 445  * This function is called from worker thread, when the interrupt
 446  * context need to post an event. This function posts the event
 447  * to fc transport netlink interface.
 448  **/
 449 static void
 450 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
 451                 struct lpfc_work_evt *evtp)
 452 {
 453         unsigned long evt_category, evt_sub_category;
 454         struct lpfc_fast_path_event *fast_evt_data;
 455         char *evt_data;
 456         uint32_t evt_data_size;
 457         struct Scsi_Host *shost;
 458
 459         fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
 460                 work_evt);
 461
 462         evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
 463         evt_sub_category = (unsigned long) fast_evt_data->un.
 464                         fabric_evt.subcategory;
 465         shost = lpfc_shost_from_vport(fast_evt_data->vport);
 466         if (evt_category == FC_REG_FABRIC_EVENT) {
 467                 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
 468                         evt_data = (char *) &fast_evt_data->un.read_check_error;
 469                         evt_data_size = sizeof(fast_evt_data->un.
 470                                 read_check_error);
 471                 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
 472                         (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
 473                         evt_data = (char *) &fast_evt_data->un.fabric_evt;
 474                         evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
 475                 } else {
 476                         lpfc_free_fast_evt(phba, fast_evt_data);
 477                         return;
 478                 }
 479         } else if (evt_category == FC_REG_SCSI_EVENT) {
 480                 switch (evt_sub_category) {
 481                 case LPFC_EVENT_QFULL:
 482                 case LPFC_EVENT_DEVBSY:
 483                         evt_data = (char *) &fast_evt_data->un.scsi_evt;
 484                         evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
 485                         break;
 486                 case LPFC_EVENT_CHECK_COND:
 487                         evt_data = (char *) &fast_evt_data->un.check_cond_evt;
 488                         evt_data_size =  sizeof(fast_evt_data->un.
 489                                 check_cond_evt);
 490                         break;
 491                 case LPFC_EVENT_VARQUEDEPTH:
 492                         evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
 493                         evt_data_size = sizeof(fast_evt_data->un.
 494                                 queue_depth_evt);
 495                         break;
 496                 default:
 497                         lpfc_free_fast_evt(phba, fast_evt_data);
 498                         return;
 499                 }
 500         } else {
 501                 lpfc_free_fast_evt(phba, fast_evt_data);
 502                 return;
 503         }
 504
 505         if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
 506                 fc_host_post_vendor_event(shost,
 507                         fc_get_event_number(),
 508                         evt_data_size,
 509                         evt_data,
 510                         LPFC_NL_VENDOR_ID);
 511
 512         lpfc_free_fast_evt(phba, fast_evt_data);
 513         return;
 514 }
 515
 516 static void
 517 lpfc_work_list_done(struct lpfc_hba *phba)
 518 {
 519         struct lpfc_work_evt  *evtp = NULL;
 520         struct lpfc_nodelist  *ndlp;
 521         int free_evt;
 522         int fcf_inuse;
 523         uint32_t nlp_did;
 524
 525         spin_lock_irq(&phba->hbalock);
 526         while (!list_empty(&phba->work_list)) {
 527                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 528                                  evt_listp);
 529                 spin_unlock_irq(&phba->hbalock);
 530                 free_evt = 1;
 531                 switch (evtp->evt) {
 532                 case LPFC_EVT_ELS_RETRY:
 533                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 534                         lpfc_els_retry_delay_handler(ndlp);
 535                         free_evt = 0; /* evt is part of ndlp */
 536                         /* decrement the node reference count held
 537                          * for this queued work
 538                          */
 539                         lpfc_nlp_put(ndlp);
 540                         break;
 541                 case LPFC_EVT_DEV_LOSS:
 542                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 543                         fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp);
 544                         free_evt = 0;
 545                         /* decrement the node reference count held for
 546                          * this queued work
 547                          */
 548                         nlp_did = ndlp->nlp_DID;
 549                         lpfc_nlp_put(ndlp);
 550                         if (phba->sli_rev == LPFC_SLI_REV4)
 551                                 lpfc_sli4_post_dev_loss_tmo_handler(phba,
 552                                                                     fcf_inuse,
 553                                                                     nlp_did);
 554                         break;
 555                 case LPFC_EVT_RECOVER_PORT:
 556                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 557                         lpfc_sli_abts_recover_port(ndlp->vport, ndlp);
 558                         free_evt = 0;
 559                         /* decrement the node reference count held for
 560                          * this queued work
 561                          */
 562                         lpfc_nlp_put(ndlp);
 563                         break;
 564                 case LPFC_EVT_ONLINE:
 565                         if (phba->link_state < LPFC_LINK_DOWN)
 566                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 567                         else
 568                                 *(int *) (evtp->evt_arg1) = 0;
 569                         complete((struct completion *)(evtp->evt_arg2));
 570                         break;
 571                 case LPFC_EVT_OFFLINE_PREP:
 572                         if (phba->link_state >= LPFC_LINK_DOWN)
 573                                 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
 574                         *(int *)(evtp->evt_arg1) = 0;
 575                         complete((struct completion *)(evtp->evt_arg2));
 576                         break;
 577                 case LPFC_EVT_OFFLINE:
 578                         lpfc_offline(phba);
 579                         lpfc_sli_brdrestart(phba);
 580                         *(int *)(evtp->evt_arg1) =
 581                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 582                         lpfc_unblock_mgmt_io(phba);
 583                         complete((struct completion *)(evtp->evt_arg2));
 584                         break;
 585                 case LPFC_EVT_WARM_START:
 586                         lpfc_offline(phba);
 587                         lpfc_reset_barrier(phba);
 588                         lpfc_sli_brdreset(phba);
 589                         lpfc_hba_down_post(phba);
 590                         *(int *)(evtp->evt_arg1) =
 591                                 lpfc_sli_brdready(phba, HS_MBRDY);
 592                         lpfc_unblock_mgmt_io(phba);
 593                         complete((struct completion *)(evtp->evt_arg2));
 594                         break;
 595                 case LPFC_EVT_KILL:
 596                         lpfc_offline(phba);
 597                         *(int *)(evtp->evt_arg1)
 598                                 = (phba->pport->stopped)
 599                                         ? 0 : lpfc_sli_brdkill(phba);
 600                         lpfc_unblock_mgmt_io(phba);
 601                         complete((struct completion *)(evtp->evt_arg2));
 602                         break;
 603                 case LPFC_EVT_FASTPATH_MGMT_EVT:
 604                         lpfc_send_fastpath_evt(phba, evtp);
 605                         free_evt = 0;
 606                         break;
 607                 case LPFC_EVT_RESET_HBA:
 608                         if (!(phba->pport->load_flag & FC_UNLOADING))
 609                                 lpfc_reset_hba(phba);
 610                         break;
 611                 }
 612                 if (free_evt)
 613                         kfree(evtp);
 614                 spin_lock_irq(&phba->hbalock);
 615         }
 616         spin_unlock_irq(&phba->hbalock);
 617
 618 }
 619
 620 static void
 621 lpfc_work_done(struct lpfc_hba *phba)
 622 {
 623         struct lpfc_sli_ring *pring;
 624         uint32_t ha_copy, status, control, work_port_events;
 625         struct lpfc_vport **vports;
 626         struct lpfc_vport *vport;
 627         int i;
 628
 629         spin_lock_irq(&phba->hbalock);
 630         ha_copy = phba->work_ha;
 631         phba->work_ha = 0;
 632         spin_unlock_irq(&phba->hbalock);
 633
 634         /* First, try to post the next mailbox command to SLI4 device */
 635         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
 636                 lpfc_sli4_post_async_mbox(phba);
 637
 638         if (ha_copy & HA_ERATT) {
 639                 /* Handle the error attention event */
 640                 lpfc_handle_eratt(phba);
 641
 642                 if (phba->fw_dump_cmpl) {
 643                         complete(phba->fw_dump_cmpl);
 644                         phba->fw_dump_cmpl = NULL;
 645                 }
 646         }
 647
 648         if (ha_copy & HA_MBATT)
 649                 lpfc_sli_handle_mb_event(phba);
 650
 651         if (ha_copy & HA_LATT)
 652                 lpfc_handle_latt(phba);
 653
 654         /* Process SLI4 events */
 655         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
 656                 if (phba->hba_flag & HBA_RRQ_ACTIVE)
 657                         lpfc_handle_rrq_active(phba);
 658                 if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
 659                         lpfc_sli4_els_xri_abort_event_proc(phba);
 660                 if (phba->hba_flag & ASYNC_EVENT)
 661                         lpfc_sli4_async_event_proc(phba);
 662                 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
 663                         spin_lock_irq(&phba->hbalock);
 664                         phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
 665                         spin_unlock_irq(&phba->hbalock);
 666                         lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
 667                 }
 668                 if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
 669                         lpfc_sli4_fcf_redisc_event_proc(phba);
 670         }
 671
 672         vports = lpfc_create_vport_work_array(phba);
 673         if (vports != NULL)
 674                 for (i = 0; i <= phba->max_vports; i++) {
 675                         /*
 676                          * We could have no vports in array if unloading, so if
 677                          * this happens then just use the pport
 678                          */
 679                         if (vports[i] == NULL && i == 0)
 680                                 vport = phba->pport;
 681                         else
 682                                 vport = vports[i];
 683                         if (vport == NULL)
 684                                 break;
 685                         spin_lock_irq(&vport->work_port_lock);
 686                         work_port_events = vport->work_port_events;
 687                         vport->work_port_events &= ~work_port_events;
 688                         spin_unlock_irq(&vport->work_port_lock);
 689                         if (work_port_events & WORKER_DISC_TMO)
 690                                 lpfc_disc_timeout_handler(vport);
 691                         if (work_port_events & WORKER_ELS_TMO)
 692                                 lpfc_els_timeout_handler(vport);
 693                         if (work_port_events & WORKER_HB_TMO)
 694                                 lpfc_hb_timeout_handler(phba);
 695                         if (work_port_events & WORKER_MBOX_TMO)
 696                                 lpfc_mbox_timeout_handler(phba);
 697                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
 698                                 lpfc_unblock_fabric_iocbs(phba);
 699                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
 700                                 lpfc_ramp_down_queue_handler(phba);
 701                         if (work_port_events & WORKER_DELAYED_DISC_TMO)
 702                                 lpfc_delayed_disc_timeout_handler(vport);
 703                 }
 704         lpfc_destroy_vport_work_array(phba, vports);
 705
 706         pring = lpfc_phba_elsring(phba);
 707         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
 708         status >>= (4*LPFC_ELS_RING);
 709         if (pring && (status & HA_RXMASK ||
 710                       pring->flag & LPFC_DEFERRED_RING_EVENT ||
 711                       phba->hba_flag & HBA_SP_QUEUE_EVT)) {
 712                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
 713                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
 714                         /* Preserve legacy behavior. */
 715                         if (!(phba->hba_flag & HBA_SP_QUEUE_EVT))
 716                                 set_bit(LPFC_DATA_READY, &phba->data_flags);
 717                 } else {
 718                         /* Driver could have abort request completed in queue
 719                          * when link goes down.  Allow for this transition.
 720                          */
 721                         if (phba->link_state >= LPFC_LINK_DOWN ||
 722                             phba->link_flag & LS_MDS_LOOPBACK) {
 723                                 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
 724                                 lpfc_sli_handle_slow_ring_event(phba, pring,
 725                                                                 (status &
 726                                                                 HA_RXMASK));
 727                         }
 728                 }
 729                 if (phba->sli_rev == LPFC_SLI_REV4)
 730                         lpfc_drain_txq(phba);
 731                 /*
 732                  * Turn on Ring interrupts
 733                  */
 734                 if (phba->sli_rev <= LPFC_SLI_REV3) {
 735                         spin_lock_irq(&phba->hbalock);
 736                         control = readl(phba->HCregaddr);
 737                         if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
 738                                 lpfc_debugfs_slow_ring_trc(phba,
 739                                         "WRK Enable ring: cntl:x%x hacopy:x%x",
 740                                         control, ha_copy, 0);
 741
 742                                 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
 743                                 writel(control, phba->HCregaddr);
 744                                 readl(phba->HCregaddr); /* flush */
 745                         } else {
 746                                 lpfc_debugfs_slow_ring_trc(phba,
 747                                         "WRK Ring ok:     cntl:x%x hacopy:x%x",
 748                                         control, ha_copy, 0);
 749                         }
 750                         spin_unlock_irq(&phba->hbalock);
 751                 }
 752         }
 753         lpfc_work_list_done(phba);
 754 }
 755
 756 int
 757 lpfc_do_work(void *p)
 758 {
 759         struct lpfc_hba *phba = p;
 760         int rc;
 761
 762         set_user_nice(current, MIN_NICE);
 763         current->flags |= PF_NOFREEZE;
 764         phba->data_flags = 0;
 765
 766         while (!kthread_should_stop()) {
 767                 /* wait and check worker queue activities */
 768                 rc = wait_event_interruptible(phba->work_waitq,
 769                                         (test_and_clear_bit(LPFC_DATA_READY,
 770                                                             &phba->data_flags)
 771                                          || kthread_should_stop()));
 772                 /* Signal wakeup shall terminate the worker thread */
 773                 if (rc) {
 774                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 775                                         "0433 Wakeup on signal: rc=x%x\n", rc);
 776                         break;
 777                 }
 778
 779                 /* Attend pending lpfc data processing */
 780                 lpfc_work_done(phba);
 781         }
 782         phba->worker_thread = NULL;
 783         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
 784                         "0432 Worker thread stopped.\n");
 785         return 0;
 786 }
 787
 788 /*
 789  * This is only called to handle FC worker events. Since this a rare
 790  * occurrence, we allocate a struct lpfc_work_evt structure here instead of
 791  * embedding it in the IOCB.
 792  */
 793 int
 794 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
 795                       uint32_t evt)
 796 {
 797         struct lpfc_work_evt  *evtp;
 798         unsigned long flags;
 799
 800         /*
 801          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
 802          * be queued to worker thread for processing
 803          */
 804         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
 805         if (!evtp)
 806                 return 0;
 807
 808         evtp->evt_arg1  = arg1;
 809         evtp->evt_arg2  = arg2;
 810         evtp->evt       = evt;
 811
 812         spin_lock_irqsave(&phba->hbalock, flags);
 813         list_add_tail(&evtp->evt_listp, &phba->work_list);
 814         spin_unlock_irqrestore(&phba->hbalock, flags);
 815
 816         lpfc_worker_wake_up(phba);
 817
 818         return 1;
 819 }
 820
 821 void
 822 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
 823 {
 824         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 825         struct lpfc_hba  *phba = vport->phba;
 826         struct lpfc_nodelist *ndlp, *next_ndlp;
 827
 828         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
 829                 if (!NLP_CHK_NODE_ACT(ndlp))
 830                         continue;
 831                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 832                         continue;
 833                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
 834                         ((vport->port_type == LPFC_NPIV_PORT) &&
 835                         (ndlp->nlp_DID == NameServer_DID)))
 836                         lpfc_unreg_rpi(vport, ndlp);
 837
 838                 /* Leave Fabric nodes alone on link down */
 839                 if ((phba->sli_rev < LPFC_SLI_REV4) &&
 840                     (!remove && ndlp->nlp_type & NLP_FABRIC))
 841                         continue;
 842
 843                 /* Notify transport of connectivity loss to trigger cleanup. */
 844                 if (phba->nvmet_support &&
 845                     ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
 846                         lpfc_nvmet_invalidate_host(phba, ndlp);
 847
 848                 lpfc_disc_state_machine(vport, ndlp, NULL,
 849                                         remove
 850                                         ? NLP_EVT_DEVICE_RM
 851                                         : NLP_EVT_DEVICE_RECOVERY);
 852         }
 853         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
 854                 if (phba->sli_rev == LPFC_SLI_REV4)
 855                         lpfc_sli4_unreg_all_rpis(vport);
 856                 lpfc_mbx_unreg_vpi(vport);
 857                 spin_lock_irq(shost->host_lock);
 858                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
 859                 spin_unlock_irq(shost->host_lock);
 860         }
 861 }
 862
 863 void
 864 lpfc_port_link_failure(struct lpfc_vport *vport)
 865 {
 866         lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
 867
 868         /* Cleanup any outstanding received buffers */
 869         lpfc_cleanup_rcv_buffers(vport);
 870
 871         /* Cleanup any outstanding RSCN activity */
 872         lpfc_els_flush_rscn(vport);
 873
 874         /* Cleanup any outstanding ELS commands */
 875         lpfc_els_flush_cmd(vport);
 876
 877         lpfc_cleanup_rpis(vport, 0);
 878
 879         /* Turn off discovery timer if its running */
 880         lpfc_can_disctmo(vport);
 881 }
 882
 883 void
 884 lpfc_linkdown_port(struct lpfc_vport *vport)
 885 {
 886         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 887
 888         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
 889                 fc_host_post_event(shost, fc_get_event_number(),
 890                                    FCH_EVT_LINKDOWN, 0);
 891
 892         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 893                 "Link Down:       state:x%x rtry:x%x flg:x%x",
 894                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
 895
 896         lpfc_port_link_failure(vport);
 897
 898         /* Stop delayed Nport discovery */
 899         spin_lock_irq(shost->host_lock);
 900         vport->fc_flag &= ~FC_DISC_DELAYED;
 901         spin_unlock_irq(shost->host_lock);
 902         del_timer_sync(&vport->delayed_disc_tmo);
 903 }
 904
 905 int
 906 lpfc_linkdown(struct lpfc_hba *phba)
 907 {
 908         struct lpfc_vport *vport = phba->pport;
 909         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 910         struct lpfc_vport **vports;
 911         LPFC_MBOXQ_t          *mb;
 912         int i;
 913
 914         if (phba->link_state == LPFC_LINK_DOWN)
 915                 return 0;
 916
 917         /* Block all SCSI stack I/Os */
 918         lpfc_scsi_dev_block(phba);
 919
 920         phba->defer_flogi_acc_flag = false;
 921
 922         spin_lock_irq(&phba->hbalock);
 923         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
 924         spin_unlock_irq(&phba->hbalock);
 925         if (phba->link_state > LPFC_LINK_DOWN) {
 926                 phba->link_state = LPFC_LINK_DOWN;
 927                 if (phba->sli4_hba.conf_trunk) {
 928                         phba->trunk_link.link0.state = 0;
 929                         phba->trunk_link.link1.state = 0;
 930                         phba->trunk_link.link2.state = 0;
 931                         phba->trunk_link.link3.state = 0;
 932                         phba->sli4_hba.link_state.logical_speed =
 933                                                 LPFC_LINK_SPEED_UNKNOWN;
 934                 }
 935                 spin_lock_irq(shost->host_lock);
 936                 phba->pport->fc_flag &= ~FC_LBIT;
 937                 spin_unlock_irq(shost->host_lock);
 938         }
 939         vports = lpfc_create_vport_work_array(phba);
 940         if (vports != NULL) {
 941                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
 942                         /* Issue a LINK DOWN event to all nodes */
 943                         lpfc_linkdown_port(vports[i]);
 944
 945                         vports[i]->fc_myDID = 0;
 946
 947                         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
 948                             (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
 949                                 if (phba->nvmet_support)
 950                                         lpfc_nvmet_update_targetport(phba);
 951                                 else
 952                                         lpfc_nvme_update_localport(vports[i]);
 953                         }
 954                 }
 955         }
 956         lpfc_destroy_vport_work_array(phba, vports);
 957
 958         /* Clean up any SLI3 firmware default rpi's */
 959         if (phba->sli_rev > LPFC_SLI_REV3)
 960                 goto skip_unreg_did;
 961
 962         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 963         if (mb) {
 964                 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb);
 965                 mb->vport = vport;
 966                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 967                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 968                     == MBX_NOT_FINISHED) {
 969                         mempool_free(mb, phba->mbox_mem_pool);
 970                 }
 971         }
 972
 973  skip_unreg_did:
 974         /* Setup myDID for link up if we are in pt2pt mode */
 975         if (phba->pport->fc_flag & FC_PT2PT) {
 976                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 977                 if (mb) {
 978                         lpfc_config_link(phba, mb);
 979                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 980                         mb->vport = vport;
 981                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 982                             == MBX_NOT_FINISHED) {
 983                                 mempool_free(mb, phba->mbox_mem_pool);
 984                         }
 985                 }
 986                 spin_lock_irq(shost->host_lock);
 987                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
 988                 phba->pport->rcv_flogi_cnt = 0;
 989                 spin_unlock_irq(shost->host_lock);
 990         }
 991         return 0;
 992 }
 993
 994 static void
 995 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
 996 {
 997         struct lpfc_nodelist *ndlp;
 998
 999         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
1000                 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
1001                 if (!NLP_CHK_NODE_ACT(ndlp))
1002                         continue;
1003                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
1004                         continue;
1005                 if (ndlp->nlp_type & NLP_FABRIC) {
1006                         /* On Linkup its safe to clean up the ndlp
1007                          * from Fabric connections.
1008                          */
1009                         if (ndlp->nlp_DID != Fabric_DID)
1010                                 lpfc_unreg_rpi(vport, ndlp);
1011                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1012                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
1013                         /* Fail outstanding IO now since device is
1014                          * marked for PLOGI.
1015                          */
1016                         lpfc_unreg_rpi(vport, ndlp);
1017                 }
1018         }
1019 }
1020
1021 static void
1022 lpfc_linkup_port(struct lpfc_vport *vport)
1023 {
1024         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1025         struct lpfc_hba  *phba = vport->phba;
1026
1027         if ((vport->load_flag & FC_UNLOADING) != 0)
1028                 return;
1029
1030         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1031                 "Link Up:         top:x%x speed:x%x flg:x%x",
1032                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
1033
1034         /* If NPIV is not enabled, only bring the physical port up */
1035         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
1036                 (vport != phba->pport))
1037                 return;
1038
1039         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1040                 fc_host_post_event(shost, fc_get_event_number(),
1041                                    FCH_EVT_LINKUP, 0);
1042
1043         spin_lock_irq(shost->host_lock);
1044         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
1045                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
1046         vport->fc_flag |= FC_NDISC_ACTIVE;
1047         vport->fc_ns_retry = 0;
1048         spin_unlock_irq(shost->host_lock);
1049
1050         if (vport->fc_flag & FC_LBIT)
1051                 lpfc_linkup_cleanup_nodes(vport);
1052
1053 }
1054
1055 static int
1056 lpfc_linkup(struct lpfc_hba *phba)
1057 {
1058         struct lpfc_vport **vports;
1059         int i;
1060         struct Scsi_Host  *shost = lpfc_shost_from_vport(phba->pport);
1061
1062         phba->link_state = LPFC_LINK_UP;
1063
1064         /* Unblock fabric iocbs if they are blocked */
1065         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
1066         del_timer_sync(&phba->fabric_block_timer);
1067
1068         vports = lpfc_create_vport_work_array(phba);
1069         if (vports != NULL)
1070                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
1071                         lpfc_linkup_port(vports[i]);
1072         lpfc_destroy_vport_work_array(phba, vports);
1073
1074         /* Clear the pport flogi counter in case the link down was
1075          * absorbed without an ACQE. No lock here - in worker thread
1076          * and discovery is synchronized.
1077          */
1078         spin_lock_irq(shost->host_lock);
1079         phba->pport->rcv_flogi_cnt = 0;
1080         spin_unlock_irq(shost->host_lock);
1081
1082         /* reinitialize initial FLOGI flag */
1083         phba->hba_flag &= ~(HBA_FLOGI_ISSUED);
1084         phba->defer_flogi_acc_flag = false;
1085
1086         return 0;
1087 }
1088
1089 /*
1090  * This routine handles processing a CLEAR_LA mailbox
1091  * command upon completion. It is setup in the LPFC_MBOXQ
1092  * as the completion routine when the command is
1093  * handed off to the SLI layer. SLI3 only.
1094  */
1095 static void
1096 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1097 {
1098         struct lpfc_vport *vport = pmb->vport;
1099         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1100         struct lpfc_sli   *psli = &phba->sli;
1101         MAILBOX_t *mb = &pmb->u.mb;
1102         uint32_t control;
1103
1104         /* Since we don't do discovery right now, turn these off here */
1105         psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1106         psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1107
1108         /* Check for error */
1109         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
1110                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
1111                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1112                                  "0320 CLEAR_LA mbxStatus error x%x hba "
1113                                  "state x%x\n",
1114                                  mb->mbxStatus, vport->port_state);
1115                 phba->link_state = LPFC_HBA_ERROR;
1116                 goto out;
1117         }
1118
1119         if (vport->port_type == LPFC_PHYSICAL_PORT)
1120                 phba->link_state = LPFC_HBA_READY;
1121
1122         spin_lock_irq(&phba->hbalock);
1123         psli->sli_flag |= LPFC_PROCESS_LA;
1124         control = readl(phba->HCregaddr);
1125         control |= HC_LAINT_ENA;
1126         writel(control, phba->HCregaddr);
1127         readl(phba->HCregaddr); /* flush */
1128         spin_unlock_irq(&phba->hbalock);
1129         mempool_free(pmb, phba->mbox_mem_pool);
1130         return;
1131
1132 out:
1133         /* Device Discovery completes */
1134         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1135                          "0225 Device Discovery completes\n");
1136         mempool_free(pmb, phba->mbox_mem_pool);
1137
1138         spin_lock_irq(shost->host_lock);
1139         vport->fc_flag &= ~FC_ABORT_DISCOVERY;
1140         spin_unlock_irq(shost->host_lock);
1141
1142         lpfc_can_disctmo(vport);
1143
1144         /* turn on Link Attention interrupts */
1145
1146         spin_lock_irq(&phba->hbalock);
1147         psli->sli_flag |= LPFC_PROCESS_LA;
1148         control = readl(phba->HCregaddr);
1149         control |= HC_LAINT_ENA;
1150         writel(control, phba->HCregaddr);
1151         readl(phba->HCregaddr); /* flush */
1152         spin_unlock_irq(&phba->hbalock);
1153
1154         return;
1155 }
1156
1157 void
1158 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1159 {
1160         struct lpfc_vport *vport = pmb->vport;
1161         LPFC_MBOXQ_t *sparam_mb;
1162         struct lpfc_dmabuf *sparam_mp;
1163         u16 status = pmb->u.mb.mbxStatus;
1164         int rc;
1165
1166         mempool_free(pmb, phba->mbox_mem_pool);
1167
1168         if (status)
1169                 goto out;
1170
1171         /* don't perform discovery for SLI4 loopback diagnostic test */
1172         if ((phba->sli_rev == LPFC_SLI_REV4) &&
1173             !(phba->hba_flag & HBA_FCOE_MODE) &&
1174             (phba->link_flag & LS_LOOPBACK_MODE))
1175                 return;
1176
1177         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
1178             vport->fc_flag & FC_PUBLIC_LOOP &&
1179             !(vport->fc_flag & FC_LBIT)) {
1180                         /* Need to wait for FAN - use discovery timer
1181                          * for timeout.  port_state is identically
1182                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
1183                          */
1184                         lpfc_set_disctmo(vport);
1185                         return;
1186         }
1187
1188         /* Start discovery by sending a FLOGI. port_state is identically
1189          * LPFC_FLOGI while waiting for FLOGI cmpl.
1190          */
1191         if (vport->port_state != LPFC_FLOGI) {
1192                 /* Issue MBX_READ_SPARAM to update CSPs before FLOGI if
1193                  * bb-credit recovery is in place.
1194                  */
1195                 if (phba->bbcredit_support && phba->cfg_enable_bbcr &&
1196                     !(phba->link_flag & LS_LOOPBACK_MODE)) {
1197                         sparam_mb = mempool_alloc(phba->mbox_mem_pool,
1198                                                   GFP_KERNEL);
1199                         if (!sparam_mb)
1200                                 goto sparam_out;
1201
1202                         rc = lpfc_read_sparam(phba, sparam_mb, 0);
1203                         if (rc) {
1204                                 mempool_free(sparam_mb, phba->mbox_mem_pool);
1205                                 goto sparam_out;
1206                         }
1207                         sparam_mb->vport = vport;
1208                         sparam_mb->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1209                         rc = lpfc_sli_issue_mbox(phba, sparam_mb, MBX_NOWAIT);
1210                         if (rc == MBX_NOT_FINISHED) {
1211                                 sparam_mp = (struct lpfc_dmabuf *)
1212                                                 sparam_mb->ctx_buf;
1213                                 lpfc_mbuf_free(phba, sparam_mp->virt,
1214                                                sparam_mp->phys);
1215                                 kfree(sparam_mp);
1216                                 sparam_mb->ctx_buf = NULL;
1217                                 mempool_free(sparam_mb, phba->mbox_mem_pool);
1218                                 goto sparam_out;
1219                         }
1220
1221                         phba->hba_flag |= HBA_DEFER_FLOGI;
1222                 }  else {
1223                         lpfc_initial_flogi(vport);
1224                 }
1225         } else {
1226                 if (vport->fc_flag & FC_PT2PT)
1227                         lpfc_disc_start(vport);
1228         }
1229         return;
1230
1231 out:
1232         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1233                          "0306 CONFIG_LINK mbxStatus error x%x HBA state x%x\n",
1234                          status, vport->port_state);
1235
1236 sparam_out:
1237         lpfc_linkdown(phba);
1238
1239         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1240                          "0200 CONFIG_LINK bad hba state x%x\n",
1241                          vport->port_state);
1242
1243         lpfc_issue_clear_la(phba, vport);
1244         return;
1245 }
1246
1247 /**
1248  * lpfc_sli4_clear_fcf_rr_bmask
1249  * @phba: pointer to the struct lpfc_hba for this port.
1250  * This fucnction resets the round robin bit mask and clears the
1251  * fcf priority list. The list deletions are done while holding the
1252  * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared
1253  * from the lpfc_fcf_pri record.
1254  **/
1255 void
1256 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba)
1257 {
1258         struct lpfc_fcf_pri *fcf_pri;
1259         struct lpfc_fcf_pri *next_fcf_pri;
1260         memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask));
1261         spin_lock_irq(&phba->hbalock);
1262         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
1263                                 &phba->fcf.fcf_pri_list, list) {
1264                 list_del_init(&fcf_pri->list);
1265                 fcf_pri->fcf_rec.flag = 0;
1266         }
1267         spin_unlock_irq(&phba->hbalock);
1268 }
1269 static void
1270 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1271 {
1272         struct lpfc_vport *vport = mboxq->vport;
1273
1274         if (mboxq->u.mb.mbxStatus) {
1275                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1276                                  "2017 REG_FCFI mbxStatus error x%x "
1277                                  "HBA state x%x\n", mboxq->u.mb.mbxStatus,
1278                                  vport->port_state);
1279                 goto fail_out;
1280         }
1281
1282         /* Start FCoE discovery by sending a FLOGI. */
1283         phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1284         /* Set the FCFI registered flag */
1285         spin_lock_irq(&phba->hbalock);
1286         phba->fcf.fcf_flag |= FCF_REGISTERED;
1287         spin_unlock_irq(&phba->hbalock);
1288
1289         /* If there is a pending FCoE event, restart FCF table scan. */
1290         if ((!(phba->hba_flag & FCF_RR_INPROG)) &&
1291                 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF))
1292                 goto fail_out;
1293
1294         /* Mark successful completion of FCF table scan */
1295         spin_lock_irq(&phba->hbalock);
1296         phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1297         phba->hba_flag &= ~FCF_TS_INPROG;
1298         if (vport->port_state != LPFC_FLOGI) {
1299                 phba->hba_flag |= FCF_RR_INPROG;
1300                 spin_unlock_irq(&phba->hbalock);
1301                 lpfc_issue_init_vfi(vport);
1302                 goto out;
1303         }
1304         spin_unlock_irq(&phba->hbalock);
1305         goto out;
1306
1307 fail_out:
1308         spin_lock_irq(&phba->hbalock);
1309         phba->hba_flag &= ~FCF_RR_INPROG;
1310         spin_unlock_irq(&phba->hbalock);
1311 out:
1312         mempool_free(mboxq, phba->mbox_mem_pool);
1313 }
1314
1315 /**
1316  * lpfc_fab_name_match - Check if the fcf fabric name match.
1317  * @fab_name: pointer to fabric name.
1318  * @new_fcf_record: pointer to fcf record.
1319  *
1320  * This routine compare the fcf record's fabric name with provided
1321  * fabric name. If the fabric name are identical this function
1322  * returns 1 else return 0.
1323  **/
1324 static uint32_t
1325 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1326 {
1327         if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1328                 return 0;
1329         if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1330                 return 0;
1331         if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1332                 return 0;
1333         if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1334                 return 0;
1335         if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1336                 return 0;
1337         if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1338                 return 0;
1339         if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1340                 return 0;
1341         if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1342                 return 0;
1343         return 1;
1344 }
1345
1346 /**
1347  * lpfc_sw_name_match - Check if the fcf switch name match.
1348  * @sw_name: pointer to switch name.
1349  * @new_fcf_record: pointer to fcf record.
1350  *
1351  * This routine compare the fcf record's switch name with provided
1352  * switch name. If the switch name are identical this function
1353  * returns 1 else return 0.
1354  **/
1355 static uint32_t
1356 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1357 {
1358         if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1359                 return 0;
1360         if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1361                 return 0;
1362         if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1363                 return 0;
1364         if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1365                 return 0;
1366         if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1367                 return 0;
1368         if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1369                 return 0;
1370         if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1371                 return 0;
1372         if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1373                 return 0;
1374         return 1;
1375 }
1376
1377 /**
1378  * lpfc_mac_addr_match - Check if the fcf mac address match.
1379  * @mac_addr: pointer to mac address.
1380  * @new_fcf_record: pointer to fcf record.
1381  *
1382  * This routine compare the fcf record's mac address with HBA's
1383  * FCF mac address. If the mac addresses are identical this function
1384  * returns 1 else return 0.
1385  **/
1386 static uint32_t
1387 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1388 {
1389         if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1390                 return 0;
1391         if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1392                 return 0;
1393         if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1394                 return 0;
1395         if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1396                 return 0;
1397         if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1398                 return 0;
1399         if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1400                 return 0;
1401         return 1;
1402 }
1403
1404 static bool
1405 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1406 {
1407         return (curr_vlan_id == new_vlan_id);
1408 }
1409
1410 /**
1411  * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record.
1412  * @phba: pointer to lpfc hba data structure.
1413  * @fcf_index: Index for the lpfc_fcf_record.
1414  * @new_fcf_record: pointer to hba fcf record.
1415  *
1416  * This routine updates the driver FCF priority record from the new HBA FCF
1417  * record. The hbalock is asserted held in the code path calling this
1418  * routine.
1419  **/
1420 static void
1421 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index,
1422                                  struct fcf_record *new_fcf_record
1423                                  )
1424 {
1425         struct lpfc_fcf_pri *fcf_pri;
1426
1427         fcf_pri = &phba->fcf.fcf_pri[fcf_index];
1428         fcf_pri->fcf_rec.fcf_index = fcf_index;
1429         /* FCF record priority */
1430         fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
1431
1432 }
1433
1434 /**
1435  * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1436  * @fcf_rec: pointer to driver fcf record.
1437  * @new_fcf_record: pointer to fcf record.
1438  *
1439  * This routine copies the FCF information from the FCF
1440  * record to lpfc_hba data structure.
1441  **/
1442 static void
1443 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1444                      struct fcf_record *new_fcf_record)
1445 {
1446         /* Fabric name */
1447         fcf_rec->fabric_name[0] =
1448                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1449         fcf_rec->fabric_name[1] =
1450                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1451         fcf_rec->fabric_name[2] =
1452                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1453         fcf_rec->fabric_name[3] =
1454                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1455         fcf_rec->fabric_name[4] =
1456                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1457         fcf_rec->fabric_name[5] =
1458                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1459         fcf_rec->fabric_name[6] =
1460                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1461         fcf_rec->fabric_name[7] =
1462                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1463         /* Mac address */
1464         fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1465         fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1466         fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1467         fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1468         fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1469         fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1470         /* FCF record index */
1471         fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1472         /* FCF record priority */
1473         fcf_rec->priority = new_fcf_record->fip_priority;
1474         /* Switch name */
1475         fcf_rec->switch_name[0] =
1476                 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1477         fcf_rec->switch_name[1] =
1478                 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1479         fcf_rec->switch_name[2] =
1480                 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1481         fcf_rec->switch_name[3] =
1482                 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1483         fcf_rec->switch_name[4] =
1484                 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1485         fcf_rec->switch_name[5] =
1486                 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1487         fcf_rec->switch_name[6] =
1488                 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1489         fcf_rec->switch_name[7] =
1490                 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1491 }
1492
1493 /**
1494  * lpfc_update_fcf_record - Update driver fcf record
1495  * @phba: pointer to lpfc hba data structure.
1496  * @fcf_rec: pointer to driver fcf record.
1497  * @new_fcf_record: pointer to hba fcf record.
1498  * @addr_mode: address mode to be set to the driver fcf record.
1499  * @vlan_id: vlan tag to be set to the driver fcf record.
1500  * @flag: flag bits to be set to the driver fcf record.
1501  *
1502  * This routine updates the driver FCF record from the new HBA FCF record
1503  * together with the address mode, vlan_id, and other informations. This
1504  * routine is called with the hbalock held.
1505  **/
1506 static void
1507 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1508                        struct fcf_record *new_fcf_record, uint32_t addr_mode,
1509                        uint16_t vlan_id, uint32_t flag)
1510 {
1511         lockdep_assert_held(&phba->hbalock);
1512
1513         /* Copy the fields from the HBA's FCF record */
1514         lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1515         /* Update other fields of driver FCF record */
1516         fcf_rec->addr_mode = addr_mode;
1517         fcf_rec->vlan_id = vlan_id;
1518         fcf_rec->flag |= (flag | RECORD_VALID);
1519         __lpfc_update_fcf_record_pri(phba,
1520                 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record),
1521                                  new_fcf_record);
1522 }
1523
1524 /**
1525  * lpfc_register_fcf - Register the FCF with hba.
1526  * @phba: pointer to lpfc hba data structure.
1527  *
1528  * This routine issues a register fcfi mailbox command to register
1529  * the fcf with HBA.
1530  **/
1531 static void
1532 lpfc_register_fcf(struct lpfc_hba *phba)
1533 {
1534         LPFC_MBOXQ_t *fcf_mbxq;
1535         int rc;
1536
1537         spin_lock_irq(&phba->hbalock);
1538         /* If the FCF is not available do nothing. */
1539         if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1540                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1541                 spin_unlock_irq(&phba->hbalock);
1542                 return;
1543         }
1544
1545         /* The FCF is already registered, start discovery */
1546         if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1547                 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1548                 phba->hba_flag &= ~FCF_TS_INPROG;
1549                 if (phba->pport->port_state != LPFC_FLOGI &&
1550                     phba->pport->fc_flag & FC_FABRIC) {
1551                         phba->hba_flag |= FCF_RR_INPROG;
1552                         spin_unlock_irq(&phba->hbalock);
1553                         lpfc_initial_flogi(phba->pport);
1554                         return;
1555                 }
1556                 spin_unlock_irq(&phba->hbalock);
1557                 return;
1558         }
1559         spin_unlock_irq(&phba->hbalock);
1560
1561         fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1562         if (!fcf_mbxq) {
1563                 spin_lock_irq(&phba->hbalock);
1564                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1565                 spin_unlock_irq(&phba->hbalock);
1566                 return;
1567         }
1568
1569         lpfc_reg_fcfi(phba, fcf_mbxq);
1570         fcf_mbxq->vport = phba->pport;
1571         fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1572         rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1573         if (rc == MBX_NOT_FINISHED) {
1574                 spin_lock_irq(&phba->hbalock);
1575                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1576                 spin_unlock_irq(&phba->hbalock);
1577                 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1578         }
1579
1580         return;
1581 }
1582
1583 /**
1584  * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1585  * @phba: pointer to lpfc hba data structure.
1586  * @new_fcf_record: pointer to fcf record.
1587  * @boot_flag: Indicates if this record used by boot bios.
1588  * @addr_mode: The address mode to be used by this FCF
1589  * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1590  *
1591  * This routine compare the fcf record with connect list obtained from the
1592  * config region to decide if this FCF can be used for SAN discovery. It returns
1593  * 1 if this record can be used for SAN discovery else return zero. If this FCF
1594  * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1595  * is used by boot bios and addr_mode will indicate the addressing mode to be
1596  * used for this FCF when the function returns.
1597  * If the FCF record need to be used with a particular vlan id, the vlan is
1598  * set in the vlan_id on return of the function. If not VLAN tagging need to
1599  * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
1600  **/
1601 static int
1602 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1603                         struct fcf_record *new_fcf_record,
1604                         uint32_t *boot_flag, uint32_t *addr_mode,
1605                         uint16_t *vlan_id)
1606 {
1607         struct lpfc_fcf_conn_entry *conn_entry;
1608         int i, j, fcf_vlan_id = 0;
1609
1610         /* Find the lowest VLAN id in the FCF record */
1611         for (i = 0; i < 512; i++) {
1612                 if (new_fcf_record->vlan_bitmap[i]) {
1613                         fcf_vlan_id = i * 8;
1614                         j = 0;
1615                         while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1616                                 j++;
1617                                 fcf_vlan_id++;
1618                         }
1619                         break;
1620                 }
1621         }
1622
1623         /* FCF not valid/available or solicitation in progress */
1624         if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1625             !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) ||
1626             bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record))
1627                 return 0;
1628
1629         if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1630                 *boot_flag = 0;
1631                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1632                                 new_fcf_record);
1633                 if (phba->valid_vlan)
1634                         *vlan_id = phba->vlan_id;
1635                 else
1636                         *vlan_id = LPFC_FCOE_NULL_VID;
1637                 return 1;
1638         }
1639
1640         /*
1641          * If there are no FCF connection table entry, driver connect to all
1642          * FCFs.
1643          */
1644         if (list_empty(&phba->fcf_conn_rec_list)) {
1645                 *boot_flag = 0;
1646                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1647                         new_fcf_record);
1648
1649                 /*
1650                  * When there are no FCF connect entries, use driver's default
1651                  * addressing mode - FPMA.
1652                  */
1653                 if (*addr_mode & LPFC_FCF_FPMA)
1654                         *addr_mode = LPFC_FCF_FPMA;
1655
1656                 /* If FCF record report a vlan id use that vlan id */
1657                 if (fcf_vlan_id)
1658                         *vlan_id = fcf_vlan_id;
1659                 else
1660                         *vlan_id = LPFC_FCOE_NULL_VID;
1661                 return 1;
1662         }
1663
1664         list_for_each_entry(conn_entry,
1665                             &phba->fcf_conn_rec_list, list) {
1666                 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1667                         continue;
1668
1669                 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1670                         !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1671                                              new_fcf_record))
1672                         continue;
1673                 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
1674                         !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
1675                                             new_fcf_record))
1676                         continue;
1677                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1678                         /*
1679                          * If the vlan bit map does not have the bit set for the
1680                          * vlan id to be used, then it is not a match.
1681                          */
1682                         if (!(new_fcf_record->vlan_bitmap
1683                                 [conn_entry->conn_rec.vlan_tag / 8] &
1684                                 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
1685                                 continue;
1686                 }
1687
1688                 /*
1689                  * If connection record does not support any addressing mode,
1690                  * skip the FCF record.
1691                  */
1692                 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
1693                         & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
1694                         continue;
1695
1696                 /*
1697                  * Check if the connection record specifies a required
1698                  * addressing mode.
1699                  */
1700                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1701                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
1702
1703                         /*
1704                          * If SPMA required but FCF not support this continue.
1705                          */
1706                         if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1707                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1708                                         new_fcf_record) & LPFC_FCF_SPMA))
1709                                 continue;
1710
1711                         /*
1712                          * If FPMA required but FCF not support this continue.
1713                          */
1714                         if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1715                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1716                                 new_fcf_record) & LPFC_FCF_FPMA))
1717                                 continue;
1718                 }
1719
1720                 /*
1721                  * This fcf record matches filtering criteria.
1722                  */
1723                 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
1724                         *boot_flag = 1;
1725                 else
1726                         *boot_flag = 0;
1727
1728                 /*
1729                  * If user did not specify any addressing mode, or if the
1730                  * preferred addressing mode specified by user is not supported
1731                  * by FCF, allow fabric to pick the addressing mode.
1732                  */
1733                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1734                                 new_fcf_record);
1735                 /*
1736                  * If the user specified a required address mode, assign that
1737                  * address mode
1738                  */
1739                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1740                         (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
1741                         *addr_mode = (conn_entry->conn_rec.flags &
1742                                 FCFCNCT_AM_SPMA) ?
1743                                 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
1744                 /*
1745                  * If the user specified a preferred address mode, use the
1746                  * addr mode only if FCF support the addr_mode.
1747                  */
1748                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1749                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1750                         (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1751                         (*addr_mode & LPFC_FCF_SPMA))
1752                                 *addr_mode = LPFC_FCF_SPMA;
1753                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1754                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1755                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1756                         (*addr_mode & LPFC_FCF_FPMA))
1757                                 *addr_mode = LPFC_FCF_FPMA;
1758
1759                 /* If matching connect list has a vlan id, use it */
1760                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
1761                         *vlan_id = conn_entry->conn_rec.vlan_tag;
1762                 /*
1763                  * If no vlan id is specified in connect list, use the vlan id
1764                  * in the FCF record
1765                  */
1766                 else if (fcf_vlan_id)
1767                         *vlan_id = fcf_vlan_id;
1768                 else
1769                         *vlan_id = LPFC_FCOE_NULL_VID;
1770
1771                 return 1;
1772         }
1773
1774         return 0;
1775 }
1776
1777 /**
1778  * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
1779  * @phba: pointer to lpfc hba data structure.
1780  * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
1781  *
1782  * This function check if there is any fcoe event pending while driver
1783  * scan FCF entries. If there is any pending event, it will restart the
1784  * FCF saning and return 1 else return 0.
1785  */
1786 int
1787 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
1788 {
1789         /*
1790          * If the Link is up and no FCoE events while in the
1791          * FCF discovery, no need to restart FCF discovery.
1792          */
1793         if ((phba->link_state  >= LPFC_LINK_UP) &&
1794             (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
1795                 return 0;
1796
1797         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1798                         "2768 Pending link or FCF event during current "
1799                         "handling of the previous event: link_state:x%x, "
1800                         "evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
1801                         phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
1802                         phba->fcoe_eventtag);
1803
1804         spin_lock_irq(&phba->hbalock);
1805         phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
1806         spin_unlock_irq(&phba->hbalock);
1807
1808         if (phba->link_state >= LPFC_LINK_UP) {
1809                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1810                                 "2780 Restart FCF table scan due to "
1811                                 "pending FCF event:evt_tag_at_scan:x%x, "
1812                                 "evt_tag_current:x%x\n",
1813                                 phba->fcoe_eventtag_at_fcf_scan,
1814                                 phba->fcoe_eventtag);
1815                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
1816         } else {
1817                 /*
1818                  * Do not continue FCF discovery and clear FCF_TS_INPROG
1819                  * flag
1820                  */
1821                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1822                                 "2833 Stop FCF discovery process due to link "
1823                                 "state change (x%x)\n", phba->link_state);
1824                 spin_lock_irq(&phba->hbalock);
1825                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1826                 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
1827                 spin_unlock_irq(&phba->hbalock);
1828         }
1829
1830         /* Unregister the currently registered FCF if required */
1831         if (unreg_fcf) {
1832                 spin_lock_irq(&phba->hbalock);
1833                 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
1834                 spin_unlock_irq(&phba->hbalock);
1835                 lpfc_sli4_unregister_fcf(phba);
1836         }
1837         return 1;
1838 }
1839
1840 /**
1841  * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
1842  * @phba: pointer to lpfc hba data structure.
1843  * @fcf_cnt: number of eligible fcf record seen so far.
1844  *
1845  * This function makes an running random selection decision on FCF record to
1846  * use through a sequence of @fcf_cnt eligible FCF records with equal
1847  * probability. To perform integer manunipulation of random numbers with
1848  * size unit32_t, the lower 16 bits of the 32-bit random number returned
1849  * from prandom_u32() are taken as the random random number generated.
1850  *
1851  * Returns true when outcome is for the newly read FCF record should be
1852  * chosen; otherwise, return false when outcome is for keeping the previously
1853  * chosen FCF record.
1854  **/
1855 static bool
1856 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
1857 {
1858         uint32_t rand_num;
1859
1860         /* Get 16-bit uniform random number */
1861         rand_num = 0xFFFF & prandom_u32();
1862
1863         /* Decision with probability 1/fcf_cnt */
1864         if ((fcf_cnt * rand_num) < 0xFFFF)
1865                 return true;
1866         else
1867                 return false;
1868 }
1869
1870 /**
1871  * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
1872  * @phba: pointer to lpfc hba data structure.
1873  * @mboxq: pointer to mailbox object.
1874  * @next_fcf_index: pointer to holder of next fcf index.
1875  *
1876  * This routine parses the non-embedded fcf mailbox command by performing the
1877  * necessarily error checking, non-embedded read FCF record mailbox command
1878  * SGE parsing, and endianness swapping.
1879  *
1880  * Returns the pointer to the new FCF record in the non-embedded mailbox
1881  * command DMA memory if successfully, other NULL.
1882  */
1883 static struct fcf_record *
1884 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
1885                              uint16_t *next_fcf_index)
1886 {
1887         void *virt_addr;
1888         struct lpfc_mbx_sge sge;
1889         struct lpfc_mbx_read_fcf_tbl *read_fcf;
1890         uint32_t shdr_status, shdr_add_status, if_type;
1891         union lpfc_sli4_cfg_shdr *shdr;
1892         struct fcf_record *new_fcf_record;
1893
1894         /* Get the first SGE entry from the non-embedded DMA memory. This
1895          * routine only uses a single SGE.
1896          */
1897         lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
1898         if (unlikely(!mboxq->sge_array)) {
1899                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1900                                 "2524 Failed to get the non-embedded SGE "
1901                                 "virtual address\n");
1902                 return NULL;
1903         }
1904         virt_addr = mboxq->sge_array->addr[0];
1905
1906         shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
1907         lpfc_sli_pcimem_bcopy(shdr, shdr,
1908                               sizeof(union lpfc_sli4_cfg_shdr));
1909         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
1910         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
1911         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
1912         if (shdr_status || shdr_add_status) {
1913                 if (shdr_status == STATUS_FCF_TABLE_EMPTY ||
1914                                         if_type == LPFC_SLI_INTF_IF_TYPE_2)
1915                         lpfc_printf_log(phba, KERN_ERR,
1916                                         LOG_TRACE_EVENT,
1917                                         "2726 READ_FCF_RECORD Indicates empty "
1918                                         "FCF table.\n");
1919                 else
1920                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1921                                         "2521 READ_FCF_RECORD mailbox failed "
1922                                         "with status x%x add_status x%x, "
1923                                         "mbx\n", shdr_status, shdr_add_status);
1924                 return NULL;
1925         }
1926
1927         /* Interpreting the returned information of the FCF record */
1928         read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
1929         lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
1930                               sizeof(struct lpfc_mbx_read_fcf_tbl));
1931         *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
1932         new_fcf_record = (struct fcf_record *)(virt_addr +
1933                           sizeof(struct lpfc_mbx_read_fcf_tbl));
1934         lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
1935                                 offsetof(struct fcf_record, vlan_bitmap));
1936         new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
1937         new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
1938
1939         return new_fcf_record;
1940 }
1941
1942 /**
1943  * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
1944  * @phba: pointer to lpfc hba data structure.
1945  * @fcf_record: pointer to the fcf record.
1946  * @vlan_id: the lowest vlan identifier associated to this fcf record.
1947  * @next_fcf_index: the index to the next fcf record in hba's fcf table.
1948  *
1949  * This routine logs the detailed FCF record if the LOG_FIP loggin is
1950  * enabled.
1951  **/
1952 static void
1953 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
1954                               struct fcf_record *fcf_record,
1955                               uint16_t vlan_id,
1956                               uint16_t next_fcf_index)
1957 {
1958         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1959                         "2764 READ_FCF_RECORD:\n"
1960                         "\tFCF_Index     : x%x\n"
1961                         "\tFCF_Avail     : x%x\n"
1962                         "\tFCF_Valid     : x%x\n"
1963                         "\tFCF_SOL       : x%x\n"
1964                         "\tFIP_Priority  : x%x\n"
1965                         "\tMAC_Provider  : x%x\n"
1966                         "\tLowest VLANID : x%x\n"
1967                         "\tFCF_MAC Addr  : x%x:%x:%x:%x:%x:%x\n"
1968                         "\tFabric_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1969                         "\tSwitch_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1970                         "\tNext_FCF_Index: x%x\n",
1971                         bf_get(lpfc_fcf_record_fcf_index, fcf_record),
1972                         bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
1973                         bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
1974                         bf_get(lpfc_fcf_record_fcf_sol, fcf_record),
1975                         fcf_record->fip_priority,
1976                         bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
1977                         vlan_id,
1978                         bf_get(lpfc_fcf_record_mac_0, fcf_record),
1979                         bf_get(lpfc_fcf_record_mac_1, fcf_record),
1980                         bf_get(lpfc_fcf_record_mac_2, fcf_record),
1981                         bf_get(lpfc_fcf_record_mac_3, fcf_record),
1982                         bf_get(lpfc_fcf_record_mac_4, fcf_record),
1983                         bf_get(lpfc_fcf_record_mac_5, fcf_record),
1984                         bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
1985                         bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
1986                         bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
1987                         bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
1988                         bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
1989                         bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
1990                         bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
1991                         bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
1992                         bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
1993                         bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
1994                         bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
1995                         bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
1996                         bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
1997                         bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
1998                         bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
1999                         bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
2000                         next_fcf_index);
2001 }
2002
2003 /**
2004  * lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
2005  * @phba: pointer to lpfc hba data structure.
2006  * @fcf_rec: pointer to an existing FCF record.
2007  * @new_fcf_record: pointer to a new FCF record.
2008  * @new_vlan_id: vlan id from the new FCF record.
2009  *
2010  * This function performs matching test of a new FCF record against an existing
2011  * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
2012  * will not be used as part of the FCF record matching criteria.
2013  *
2014  * Returns true if all the fields matching, otherwise returns false.
2015  */
2016 static bool
2017 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
2018                            struct lpfc_fcf_rec *fcf_rec,
2019                            struct fcf_record *new_fcf_record,
2020                            uint16_t new_vlan_id)
2021 {
2022         if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
2023                 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
2024                         return false;
2025         if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
2026                 return false;
2027         if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
2028                 return false;
2029         if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
2030                 return false;
2031         if (fcf_rec->priority != new_fcf_record->fip_priority)
2032                 return false;
2033         return true;
2034 }
2035
2036 /**
2037  * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf
2038  * @vport: Pointer to vport object.
2039  * @fcf_index: index to next fcf.
2040  *
2041  * This function processing the roundrobin fcf failover to next fcf index.
2042  * When this function is invoked, there will be a current fcf registered
2043  * for flogi.
2044  * Return: 0 for continue retrying flogi on currently registered fcf;
2045  *         1 for stop flogi on currently registered fcf;
2046  */
2047 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index)
2048 {
2049         struct lpfc_hba *phba = vport->phba;
2050         int rc;
2051
2052         if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
2053                 spin_lock_irq(&phba->hbalock);
2054                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2055                         spin_unlock_irq(&phba->hbalock);
2056                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2057                                         "2872 Devloss tmo with no eligible "
2058                                         "FCF, unregister in-use FCF (x%x) "
2059                                         "and rescan FCF table\n",
2060                                         phba->fcf.current_rec.fcf_indx);
2061                         lpfc_unregister_fcf_rescan(phba);
2062                         goto stop_flogi_current_fcf;
2063                 }
2064                 /* Mark the end to FLOGI roundrobin failover */
2065                 phba->hba_flag &= ~FCF_RR_INPROG;
2066                 /* Allow action to new fcf asynchronous event */
2067                 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
2068                 spin_unlock_irq(&phba->hbalock);
2069                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2070                                 "2865 No FCF available, stop roundrobin FCF "
2071                                 "failover and change port state:x%x/x%x\n",
2072                                 phba->pport->port_state, LPFC_VPORT_UNKNOWN);
2073                 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
2074
2075                 if (!phba->fcf.fcf_redisc_attempted) {
2076                         lpfc_unregister_fcf(phba);
2077
2078                         rc = lpfc_sli4_redisc_fcf_table(phba);
2079                         if (!rc) {
2080                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2081                                                 "3195 Rediscover FCF table\n");
2082                                 phba->fcf.fcf_redisc_attempted = 1;
2083                                 lpfc_sli4_clear_fcf_rr_bmask(phba);
2084                         } else {
2085                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2086                                                 "3196 Rediscover FCF table "
2087                                                 "failed. Status:x%x\n", rc);
2088                         }
2089                 } else {
2090                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2091                                         "3197 Already rediscover FCF table "
2092                                         "attempted. No more retry\n");
2093                 }
2094                 goto stop_flogi_current_fcf;
2095         } else {
2096                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS,
2097                                 "2794 Try FLOGI roundrobin FCF failover to "
2098                                 "(x%x)\n", fcf_index);
2099                 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index);
2100                 if (rc)
2101                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
2102                                         "2761 FLOGI roundrobin FCF failover "
2103                                         "failed (rc:x%x) to read FCF (x%x)\n",
2104                                         rc, phba->fcf.current_rec.fcf_indx);
2105                 else
2106                         goto stop_flogi_current_fcf;
2107         }
2108         return 0;
2109
2110 stop_flogi_current_fcf:
2111         lpfc_can_disctmo(vport);
2112         return 1;
2113 }
2114
2115 /**
2116  * lpfc_sli4_fcf_pri_list_del
2117  * @phba: pointer to lpfc hba data structure.
2118  * @fcf_index: the index of the fcf record to delete
2119  * This routine checks the on list flag of the fcf_index to be deleted.
2120  * If it is one the list then it is removed from the list, and the flag
2121  * is cleared. This routine grab the hbalock before removing the fcf
2122  * record from the list.
2123  **/
2124 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba,
2125                         uint16_t fcf_index)
2126 {
2127         struct lpfc_fcf_pri *new_fcf_pri;
2128
2129         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2130         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2131                 "3058 deleting idx x%x pri x%x flg x%x\n",
2132                 fcf_index, new_fcf_pri->fcf_rec.priority,
2133                  new_fcf_pri->fcf_rec.flag);
2134         spin_lock_irq(&phba->hbalock);
2135         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) {
2136                 if (phba->fcf.current_rec.priority ==
2137                                 new_fcf_pri->fcf_rec.priority)
2138                         phba->fcf.eligible_fcf_cnt--;
2139                 list_del_init(&new_fcf_pri->list);
2140                 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST;
2141         }
2142         spin_unlock_irq(&phba->hbalock);
2143 }
2144
2145 /**
2146  * lpfc_sli4_set_fcf_flogi_fail
2147  * @phba: pointer to lpfc hba data structure.
2148  * @fcf_index: the index of the fcf record to update
2149  * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED
2150  * flag so the the round robin slection for the particular priority level
2151  * will try a different fcf record that does not have this bit set.
2152  * If the fcf record is re-read for any reason this flag is cleared brfore
2153  * adding it to the priority list.
2154  **/
2155 void
2156 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index)
2157 {
2158         struct lpfc_fcf_pri *new_fcf_pri;
2159         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2160         spin_lock_irq(&phba->hbalock);
2161         new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED;
2162         spin_unlock_irq(&phba->hbalock);
2163 }
2164
2165 /**
2166  * lpfc_sli4_fcf_pri_list_add
2167  * @phba: pointer to lpfc hba data structure.
2168  * @fcf_index: the index of the fcf record to add
2169  * @new_fcf_record: pointer to a new FCF record.
2170  * This routine checks the priority of the fcf_index to be added.
2171  * If it is a lower priority than the current head of the fcf_pri list
2172  * then it is added to the list in the right order.
2173  * If it is the same priority as the current head of the list then it
2174  * is added to the head of the list and its bit in the rr_bmask is set.
2175  * If the fcf_index to be added is of a higher priority than the current
2176  * head of the list then the rr_bmask is cleared, its bit is set in the
2177  * rr_bmask and it is added to the head of the list.
2178  * returns:
2179  * 0=success 1=failure
2180  **/
2181 static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba,
2182         uint16_t fcf_index,
2183         struct fcf_record *new_fcf_record)
2184 {
2185         uint16_t current_fcf_pri;
2186         uint16_t last_index;
2187         struct lpfc_fcf_pri *fcf_pri;
2188         struct lpfc_fcf_pri *next_fcf_pri;
2189         struct lpfc_fcf_pri *new_fcf_pri;
2190         int ret;
2191
2192         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2193         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2194                 "3059 adding idx x%x pri x%x flg x%x\n",
2195                 fcf_index, new_fcf_record->fip_priority,
2196                  new_fcf_pri->fcf_rec.flag);
2197         spin_lock_irq(&phba->hbalock);
2198         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST)
2199                 list_del_init(&new_fcf_pri->list);
2200         new_fcf_pri->fcf_rec.fcf_index = fcf_index;
2201         new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
2202         if (list_empty(&phba->fcf.fcf_pri_list)) {
2203                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2204                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2205                                 new_fcf_pri->fcf_rec.fcf_index);
2206                 goto out;
2207         }
2208
2209         last_index = find_first_bit(phba->fcf.fcf_rr_bmask,
2210                                 LPFC_SLI4_FCF_TBL_INDX_MAX);
2211         if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
2212                 ret = 0; /* Empty rr list */
2213                 goto out;
2214         }
2215         current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority;
2216         if (new_fcf_pri->fcf_rec.priority <=  current_fcf_pri) {
2217                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2218                 if (new_fcf_pri->fcf_rec.priority <  current_fcf_pri) {
2219                         memset(phba->fcf.fcf_rr_bmask, 0,
2220                                 sizeof(*phba->fcf.fcf_rr_bmask));
2221                         /* fcfs_at_this_priority_level = 1; */
2222                         phba->fcf.eligible_fcf_cnt = 1;
2223                 } else
2224                         /* fcfs_at_this_priority_level++; */
2225                         phba->fcf.eligible_fcf_cnt++;
2226                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2227                                 new_fcf_pri->fcf_rec.fcf_index);
2228                 goto out;
2229         }
2230
2231         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
2232                                 &phba->fcf.fcf_pri_list, list) {
2233                 if (new_fcf_pri->fcf_rec.priority <=
2234                                 fcf_pri->fcf_rec.priority) {
2235                         if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list)
2236                                 list_add(&new_fcf_pri->list,
2237                                                 &phba->fcf.fcf_pri_list);
2238                         else
2239                                 list_add(&new_fcf_pri->list,
2240                                          &((struct lpfc_fcf_pri *)
2241                                         fcf_pri->list.prev)->list);
2242                         ret = 0;
2243                         goto out;
2244                 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list
2245                         || new_fcf_pri->fcf_rec.priority <
2246                                 next_fcf_pri->fcf_rec.priority) {
2247                         list_add(&new_fcf_pri->list, &fcf_pri->list);
2248                         ret = 0;
2249                         goto out;
2250                 }
2251                 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority)
2252                         continue;
2253
2254         }
2255         ret = 1;
2256 out:
2257         /* we use = instead of |= to clear the FLOGI_FAILED flag. */
2258         new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST;
2259         spin_unlock_irq(&phba->hbalock);
2260         return ret;
2261 }
2262
2263 /**
2264  * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
2265  * @phba: pointer to lpfc hba data structure.
2266  * @mboxq: pointer to mailbox object.
2267  *
2268  * This function iterates through all the fcf records available in
2269  * HBA and chooses the optimal FCF record for discovery. After finding
2270  * the FCF for discovery it registers the FCF record and kicks start
2271  * discovery.
2272  * If FCF_IN_USE flag is set in currently used FCF, the routine tries to
2273  * use an FCF record which matches fabric name and mac address of the
2274  * currently used FCF record.
2275  * If the driver supports only one FCF, it will try to use the FCF record
2276  * used by BOOT_BIOS.
2277  */
2278 void
2279 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2280 {
2281         struct fcf_record *new_fcf_record;
2282         uint32_t boot_flag, addr_mode;
2283         uint16_t fcf_index, next_fcf_index;
2284         struct lpfc_fcf_rec *fcf_rec = NULL;
2285         uint16_t vlan_id = LPFC_FCOE_NULL_VID;
2286         bool select_new_fcf;
2287         int rc;
2288
2289         /* If there is pending FCoE event restart FCF table scan */
2290         if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) {
2291                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2292                 return;
2293         }
2294
2295         /* Parse the FCF record from the non-embedded mailbox command */
2296         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2297                                                       &next_fcf_index);
2298         if (!new_fcf_record) {
2299                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2300                                 "2765 Mailbox command READ_FCF_RECORD "
2301                                 "failed to retrieve a FCF record.\n");
2302                 /* Let next new FCF event trigger fast failover */
2303                 spin_lock_irq(&phba->hbalock);
2304                 phba->hba_flag &= ~FCF_TS_INPROG;
2305                 spin_unlock_irq(&phba->hbalock);
2306                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2307                 return;
2308         }
2309
2310         /* Check the FCF record against the connection list */
2311         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2312                                       &addr_mode, &vlan_id);
2313
2314         /* Log the FCF record information if turned on */
2315         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2316                                       next_fcf_index);
2317
2318         /*
2319          * If the fcf record does not match with connect list entries
2320          * read the next entry; otherwise, this is an eligible FCF
2321          * record for roundrobin FCF failover.
2322          */
2323         if (!rc) {
2324                 lpfc_sli4_fcf_pri_list_del(phba,
2325                                         bf_get(lpfc_fcf_record_fcf_index,
2326                                                new_fcf_record));
2327                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2328                                 "2781 FCF (x%x) failed connection "
2329                                 "list check: (x%x/x%x/%x)\n",
2330                                 bf_get(lpfc_fcf_record_fcf_index,
2331                                        new_fcf_record),
2332                                 bf_get(lpfc_fcf_record_fcf_avail,
2333                                        new_fcf_record),
2334                                 bf_get(lpfc_fcf_record_fcf_valid,
2335                                        new_fcf_record),
2336                                 bf_get(lpfc_fcf_record_fcf_sol,
2337                                        new_fcf_record));
2338                 if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
2339                     lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2340                     new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
2341                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) !=
2342                             phba->fcf.current_rec.fcf_indx) {
2343                                 lpfc_printf_log(phba, KERN_ERR,
2344                                                 LOG_TRACE_EVENT,
2345                                         "2862 FCF (x%x) matches property "
2346                                         "of in-use FCF (x%x)\n",
2347                                         bf_get(lpfc_fcf_record_fcf_index,
2348                                                new_fcf_record),
2349                                         phba->fcf.current_rec.fcf_indx);
2350                                 goto read_next_fcf;
2351                         }
2352                         /*
2353                          * In case the current in-use FCF record becomes
2354                          * invalid/unavailable during FCF discovery that
2355                          * was not triggered by fast FCF failover process,
2356                          * treat it as fast FCF failover.
2357                          */
2358                         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
2359                             !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2360                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2361                                                 "2835 Invalid in-use FCF "
2362                                                 "(x%x), enter FCF failover "
2363                                                 "table scan.\n",
2364                                                 phba->fcf.current_rec.fcf_indx);
2365                                 spin_lock_irq(&phba->hbalock);
2366                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2367                                 spin_unlock_irq(&phba->hbalock);
2368                                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2369                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2370                                                 LPFC_FCOE_FCF_GET_FIRST);
2371                                 return;
2372                         }
2373                 }
2374                 goto read_next_fcf;
2375         } else {
2376                 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2377                 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index,
2378                                                         new_fcf_record);
2379                 if (rc)
2380                         goto read_next_fcf;
2381         }
2382
2383         /*
2384          * If this is not the first FCF discovery of the HBA, use last
2385          * FCF record for the discovery. The condition that a rescan
2386          * matches the in-use FCF record: fabric name, switch name, mac
2387          * address, and vlan_id.
2388          */
2389         spin_lock_irq(&phba->hbalock);
2390         if (phba->fcf.fcf_flag & FCF_IN_USE) {
2391                 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2392                         lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2393                     new_fcf_record, vlan_id)) {
2394                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) ==
2395                             phba->fcf.current_rec.fcf_indx) {
2396                                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2397                                 if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
2398                                         /* Stop FCF redisc wait timer */
2399                                         __lpfc_sli4_stop_fcf_redisc_wait_timer(
2400                                                                         phba);
2401                                 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2402                                         /* Fast failover, mark completed */
2403                                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2404                                 spin_unlock_irq(&phba->hbalock);
2405                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2406                                                 "2836 New FCF matches in-use "
2407                                                 "FCF (x%x), port_state:x%x, "
2408                                                 "fc_flag:x%x\n",
2409                                                 phba->fcf.current_rec.fcf_indx,
2410                                                 phba->pport->port_state,
2411                                                 phba->pport->fc_flag);
2412                                 goto out;
2413                         } else
2414                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2415                                         "2863 New FCF (x%x) matches "
2416                                         "property of in-use FCF (x%x)\n",
2417                                         bf_get(lpfc_fcf_record_fcf_index,
2418                                                new_fcf_record),
2419                                         phba->fcf.current_rec.fcf_indx);
2420                 }
2421                 /*
2422                  * Read next FCF record from HBA searching for the matching
2423                  * with in-use record only if not during the fast failover
2424                  * period. In case of fast failover period, it shall try to
2425                  * determine whether the FCF record just read should be the
2426                  * next candidate.
2427                  */
2428                 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2429                         spin_unlock_irq(&phba->hbalock);
2430                         goto read_next_fcf;
2431                 }
2432         }
2433         /*
2434          * Update on failover FCF record only if it's in FCF fast-failover
2435          * period; otherwise, update on current FCF record.
2436          */
2437         if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2438                 fcf_rec = &phba->fcf.failover_rec;
2439         else
2440                 fcf_rec = &phba->fcf.current_rec;
2441
2442         if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
2443                 /*
2444                  * If the driver FCF record does not have boot flag
2445                  * set and new hba fcf record has boot flag set, use
2446                  * the new hba fcf record.
2447                  */
2448                 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
2449                         /* Choose this FCF record */
2450                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2451                                         "2837 Update current FCF record "
2452                                         "(x%x) with new FCF record (x%x)\n",
2453                                         fcf_rec->fcf_indx,
2454                                         bf_get(lpfc_fcf_record_fcf_index,
2455                                         new_fcf_record));
2456                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2457                                         addr_mode, vlan_id, BOOT_ENABLE);
2458                         spin_unlock_irq(&phba->hbalock);
2459                         goto read_next_fcf;
2460                 }
2461                 /*
2462                  * If the driver FCF record has boot flag set and the
2463                  * new hba FCF record does not have boot flag, read
2464                  * the next FCF record.
2465                  */
2466                 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
2467                         spin_unlock_irq(&phba->hbalock);
2468                         goto read_next_fcf;
2469                 }
2470                 /*
2471                  * If the new hba FCF record has lower priority value
2472                  * than the driver FCF record, use the new record.
2473                  */
2474                 if (new_fcf_record->fip_priority < fcf_rec->priority) {
2475                         /* Choose the new FCF record with lower priority */
2476                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2477                                         "2838 Update current FCF record "
2478                                         "(x%x) with new FCF record (x%x)\n",
2479                                         fcf_rec->fcf_indx,
2480                                         bf_get(lpfc_fcf_record_fcf_index,
2481                                                new_fcf_record));
2482                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2483                                         addr_mode, vlan_id, 0);
2484                         /* Reset running random FCF selection count */
2485                         phba->fcf.eligible_fcf_cnt = 1;
2486                 } else if (new_fcf_record->fip_priority == fcf_rec->priority) {
2487                         /* Update running random FCF selection count */
2488                         phba->fcf.eligible_fcf_cnt++;
2489                         select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
2490                                                 phba->fcf.eligible_fcf_cnt);
2491                         if (select_new_fcf) {
2492                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2493                                         "2839 Update current FCF record "
2494                                         "(x%x) with new FCF record (x%x)\n",
2495                                         fcf_rec->fcf_indx,
2496                                         bf_get(lpfc_fcf_record_fcf_index,
2497                                                new_fcf_record));
2498                                 /* Choose the new FCF by random selection */
2499                                 __lpfc_update_fcf_record(phba, fcf_rec,
2500                                                          new_fcf_record,
2501                                                          addr_mode, vlan_id, 0);
2502                         }
2503                 }
2504                 spin_unlock_irq(&phba->hbalock);
2505                 goto read_next_fcf;
2506         }
2507         /*
2508          * This is the first suitable FCF record, choose this record for
2509          * initial best-fit FCF.
2510          */
2511         if (fcf_rec) {
2512                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2513                                 "2840 Update initial FCF candidate "
2514                                 "with FCF (x%x)\n",
2515                                 bf_get(lpfc_fcf_record_fcf_index,
2516                                        new_fcf_record));
2517                 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2518                                          addr_mode, vlan_id, (boot_flag ?
2519                                          BOOT_ENABLE : 0));
2520                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2521                 /* Setup initial running random FCF selection count */
2522                 phba->fcf.eligible_fcf_cnt = 1;
2523         }
2524         spin_unlock_irq(&phba->hbalock);
2525         goto read_next_fcf;
2526
2527 read_next_fcf:
2528         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2529         if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
2530                 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
2531                         /*
2532                          * Case of FCF fast failover scan
2533                          */
2534
2535                         /*
2536                          * It has not found any suitable FCF record, cancel
2537                          * FCF scan inprogress, and do nothing
2538                          */
2539                         if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
2540                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2541                                                "2782 No suitable FCF found: "
2542                                                "(x%x/x%x)\n",
2543                                                phba->fcoe_eventtag_at_fcf_scan,
2544                                                bf_get(lpfc_fcf_record_fcf_index,
2545                                                       new_fcf_record));
2546                                 spin_lock_irq(&phba->hbalock);
2547                                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2548                                         phba->hba_flag &= ~FCF_TS_INPROG;
2549                                         spin_unlock_irq(&phba->hbalock);
2550                                         /* Unregister in-use FCF and rescan */
2551                                         lpfc_printf_log(phba, KERN_INFO,
2552                                                         LOG_FIP,
2553                                                         "2864 On devloss tmo "
2554                                                         "unreg in-use FCF and "
2555                                                         "rescan FCF table\n");
2556                                         lpfc_unregister_fcf_rescan(phba);
2557                                         return;
2558                                 }
2559                                 /*
2560                                  * Let next new FCF event trigger fast failover
2561                                  */
2562                                 phba->hba_flag &= ~FCF_TS_INPROG;
2563                                 spin_unlock_irq(&phba->hbalock);
2564                                 return;
2565                         }
2566                         /*
2567                          * It has found a suitable FCF record that is not
2568                          * the same as in-use FCF record, unregister the
2569                          * in-use FCF record, replace the in-use FCF record
2570                          * with the new FCF record, mark FCF fast failover
2571                          * completed, and then start register the new FCF
2572                          * record.
2573                          */
2574
2575                         /* Unregister the current in-use FCF record */
2576                         lpfc_unregister_fcf(phba);
2577
2578                         /* Replace in-use record with the new record */
2579                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2580                                         "2842 Replace in-use FCF (x%x) "
2581                                         "with failover FCF (x%x)\n",
2582                                         phba->fcf.current_rec.fcf_indx,
2583                                         phba->fcf.failover_rec.fcf_indx);
2584                         memcpy(&phba->fcf.current_rec,
2585                                &phba->fcf.failover_rec,
2586                                sizeof(struct lpfc_fcf_rec));
2587                         /*
2588                          * Mark the fast FCF failover rediscovery completed
2589                          * and the start of the first round of the roundrobin
2590                          * FCF failover.
2591                          */
2592                         spin_lock_irq(&phba->hbalock);
2593                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2594                         spin_unlock_irq(&phba->hbalock);
2595                         /* Register to the new FCF record */
2596                         lpfc_register_fcf(phba);
2597                 } else {
2598                         /*
2599                          * In case of transaction period to fast FCF failover,
2600                          * do nothing when search to the end of the FCF table.
2601                          */
2602                         if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
2603                             (phba->fcf.fcf_flag & FCF_REDISC_PEND))
2604                                 return;
2605
2606                         if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2607                                 phba->fcf.fcf_flag & FCF_IN_USE) {
2608                                 /*
2609                                  * In case the current in-use FCF record no
2610                                  * longer existed during FCF discovery that
2611                                  * was not triggered by fast FCF failover
2612                                  * process, treat it as fast FCF failover.
2613                                  */
2614                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2615                                                 "2841 In-use FCF record (x%x) "
2616                                                 "not reported, entering fast "
2617                                                 "FCF failover mode scanning.\n",
2618                                                 phba->fcf.current_rec.fcf_indx);
2619                                 spin_lock_irq(&phba->hbalock);
2620                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2621                                 spin_unlock_irq(&phba->hbalock);
2622                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2623                                                 LPFC_FCOE_FCF_GET_FIRST);
2624                                 return;
2625                         }
2626                         /* Register to the new FCF record */
2627                         lpfc_register_fcf(phba);
2628                 }
2629         } else
2630                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
2631         return;
2632
2633 out:
2634         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2635         lpfc_register_fcf(phba);
2636
2637         return;
2638 }
2639
2640 /**
2641  * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler
2642  * @phba: pointer to lpfc hba data structure.
2643  * @mboxq: pointer to mailbox object.
2644  *
2645  * This is the callback function for FLOGI failure roundrobin FCF failover
2646  * read FCF record mailbox command from the eligible FCF record bmask for
2647  * performing the failover. If the FCF read back is not valid/available, it
2648  * fails through to retrying FLOGI to the currently registered FCF again.
2649  * Otherwise, if the FCF read back is valid and available, it will set the
2650  * newly read FCF record to the failover FCF record, unregister currently
2651  * registered FCF record, copy the failover FCF record to the current
2652  * FCF record, and then register the current FCF record before proceeding
2653  * to trying FLOGI on the new failover FCF.
2654  */
2655 void
2656 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2657 {
2658         struct fcf_record *new_fcf_record;
2659         uint32_t boot_flag, addr_mode;
2660         uint16_t next_fcf_index, fcf_index;
2661         uint16_t current_fcf_index;
2662         uint16_t vlan_id;
2663         int rc;
2664
2665         /* If link state is not up, stop the roundrobin failover process */
2666         if (phba->link_state < LPFC_LINK_UP) {
2667                 spin_lock_irq(&phba->hbalock);
2668                 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
2669                 phba->hba_flag &= ~FCF_RR_INPROG;
2670                 spin_unlock_irq(&phba->hbalock);
2671                 goto out;
2672         }
2673
2674         /* Parse the FCF record from the non-embedded mailbox command */
2675         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2676                                                       &next_fcf_index);
2677         if (!new_fcf_record) {
2678                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2679                                 "2766 Mailbox command READ_FCF_RECORD "
2680                                 "failed to retrieve a FCF record. "
2681                                 "hba_flg x%x fcf_flg x%x\n", phba->hba_flag,
2682                                 phba->fcf.fcf_flag);
2683                 lpfc_unregister_fcf_rescan(phba);
2684                 goto out;
2685         }
2686
2687         /* Get the needed parameters from FCF record */
2688         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2689                                       &addr_mode, &vlan_id);
2690
2691         /* Log the FCF record information if turned on */
2692         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2693                                       next_fcf_index);
2694
2695         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2696         if (!rc) {
2697                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2698                                 "2848 Remove ineligible FCF (x%x) from "
2699                                 "from roundrobin bmask\n", fcf_index);
2700                 /* Clear roundrobin bmask bit for ineligible FCF */
2701                 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index);
2702                 /* Perform next round of roundrobin FCF failover */
2703                 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
2704                 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index);
2705                 if (rc)
2706                         goto out;
2707                 goto error_out;
2708         }
2709
2710         if (fcf_index == phba->fcf.current_rec.fcf_indx) {
2711                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2712                                 "2760 Perform FLOGI roundrobin FCF failover: "
2713                                 "FCF (x%x) back to FCF (x%x)\n",
2714                                 phba->fcf.current_rec.fcf_indx, fcf_index);
2715                 /* Wait 500 ms before retrying FLOGI to current FCF */
2716                 msleep(500);
2717                 lpfc_issue_init_vfi(phba->pport);
2718                 goto out;
2719         }
2720
2721         /* Upload new FCF record to the failover FCF record */
2722         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2723                         "2834 Update current FCF (x%x) with new FCF (x%x)\n",
2724                         phba->fcf.failover_rec.fcf_indx, fcf_index);
2725         spin_lock_irq(&phba->hbalock);
2726         __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
2727                                  new_fcf_record, addr_mode, vlan_id,
2728                                  (boot_flag ? BOOT_ENABLE : 0));
2729         spin_unlock_irq(&phba->hbalock);
2730
2731         current_fcf_index = phba->fcf.current_rec.fcf_indx;
2732
2733         /* Unregister the current in-use FCF record */
2734         lpfc_unregister_fcf(phba);
2735
2736         /* Replace in-use record with the new record */
2737         memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
2738                sizeof(struct lpfc_fcf_rec));
2739
2740         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2741                         "2783 Perform FLOGI roundrobin FCF failover: FCF "
2742                         "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index);
2743
2744 error_out:
2745         lpfc_register_fcf(phba);
2746 out:
2747         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2748 }
2749
2750 /**
2751  * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
2752  * @phba: pointer to lpfc hba data structure.
2753  * @mboxq: pointer to mailbox object.
2754  *
2755  * This is the callback function of read FCF record mailbox command for
2756  * updating the eligible FCF bmask for FLOGI failure roundrobin FCF
2757  * failover when a new FCF event happened. If the FCF read back is
2758  * valid/available and it passes the connection list check, it updates
2759  * the bmask for the eligible FCF record for roundrobin failover.
2760  */
2761 void
2762 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2763 {
2764         struct fcf_record *new_fcf_record;
2765         uint32_t boot_flag, addr_mode;
2766         uint16_t fcf_index, next_fcf_index;
2767         uint16_t vlan_id;
2768         int rc;
2769
2770         /* If link state is not up, no need to proceed */
2771         if (phba->link_state < LPFC_LINK_UP)
2772                 goto out;
2773
2774         /* If FCF discovery period is over, no need to proceed */
2775         if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
2776                 goto out;
2777
2778         /* Parse the FCF record from the non-embedded mailbox command */
2779         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2780                                                       &next_fcf_index);
2781         if (!new_fcf_record) {
2782                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2783                                 "2767 Mailbox command READ_FCF_RECORD "
2784                                 "failed to retrieve a FCF record.\n");
2785                 goto out;
2786         }
2787
2788         /* Check the connection list for eligibility */
2789         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2790                                       &addr_mode, &vlan_id);
2791
2792         /* Log the FCF record information if turned on */
2793         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2794                                       next_fcf_index);
2795
2796         if (!rc)
2797                 goto out;
2798
2799         /* Update the eligible FCF record index bmask */
2800         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2801
2802         rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record);
2803
2804 out:
2805         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2806 }
2807
2808 /**
2809  * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command.
2810  * @phba: pointer to lpfc hba data structure.
2811  * @mboxq: pointer to mailbox data structure.
2812  *
2813  * This function handles completion of init vfi mailbox command.
2814  */
2815 static void
2816 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2817 {
2818         struct lpfc_vport *vport = mboxq->vport;
2819
2820         /*
2821          * VFI not supported on interface type 0, just do the flogi
2822          * Also continue if the VFI is in use - just use the same one.
2823          */
2824         if (mboxq->u.mb.mbxStatus &&
2825             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
2826                         LPFC_SLI_INTF_IF_TYPE_0) &&
2827             mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
2828                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
2829                                  "2891 Init VFI mailbox failed 0x%x\n",
2830                                  mboxq->u.mb.mbxStatus);
2831                 mempool_free(mboxq, phba->mbox_mem_pool);
2832                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2833                 return;
2834         }
2835
2836         lpfc_initial_flogi(vport);
2837         mempool_free(mboxq, phba->mbox_mem_pool);
2838         return;
2839 }
2840
2841 /**
2842  * lpfc_issue_init_vfi - Issue init_vfi mailbox command.
2843  * @vport: pointer to lpfc_vport data structure.
2844  *
2845  * This function issue a init_vfi mailbox command to initialize the VFI and
2846  * VPI for the physical port.
2847  */
2848 void
2849 lpfc_issue_init_vfi(struct lpfc_vport *vport)
2850 {
2851         LPFC_MBOXQ_t *mboxq;
2852         int rc;
2853         struct lpfc_hba *phba = vport->phba;
2854
2855         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2856         if (!mboxq) {
2857                 lpfc_printf_vlog(vport, KERN_ERR,
2858                         LOG_TRACE_EVENT, "2892 Failed to allocate "
2859                         "init_vfi mailbox\n");
2860                 return;
2861         }
2862         lpfc_init_vfi(mboxq, vport);
2863         mboxq->mbox_cmpl = lpfc_init_vfi_cmpl;
2864         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
2865         if (rc == MBX_NOT_FINISHED) {
2866                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
2867                                  "2893 Failed to issue init_vfi mailbox\n");
2868                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
2869         }
2870 }
2871
2872 /**
2873  * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
2874  * @phba: pointer to lpfc hba data structure.
2875  * @mboxq: pointer to mailbox data structure.
2876  *
2877  * This function handles completion of init vpi mailbox command.
2878  */
2879 void
2880 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2881 {
2882         struct lpfc_vport *vport = mboxq->vport;
2883         struct lpfc_nodelist *ndlp;
2884         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2885
2886         if (mboxq->u.mb.mbxStatus) {
2887                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
2888                                  "2609 Init VPI mailbox failed 0x%x\n",
2889                                  mboxq->u.mb.mbxStatus);
2890                 mempool_free(mboxq, phba->mbox_mem_pool);
2891                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2892                 return;
2893         }
2894         spin_lock_irq(shost->host_lock);
2895         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
2896         spin_unlock_irq(shost->host_lock);
2897
2898         /* If this port is physical port or FDISC is done, do reg_vpi */
2899         if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
2900                         ndlp = lpfc_findnode_did(vport, Fabric_DID);
2901                         if (!ndlp)
2902                                 lpfc_printf_vlog(vport, KERN_ERR,
2903                                         LOG_TRACE_EVENT,
2904                                         "2731 Cannot find fabric "
2905                                         "controller node\n");
2906                         else
2907                                 lpfc_register_new_vport(phba, vport, ndlp);
2908                         mempool_free(mboxq, phba->mbox_mem_pool);
2909                         return;
2910         }
2911
2912         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2913                 lpfc_initial_fdisc(vport);
2914         else {
2915                 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
2916                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
2917                                  "2606 No NPIV Fabric support\n");
2918         }
2919         mempool_free(mboxq, phba->mbox_mem_pool);
2920         return;
2921 }
2922
2923 /**
2924  * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
2925  * @vport: pointer to lpfc_vport data structure.
2926  *
2927  * This function issue a init_vpi mailbox command to initialize
2928  * VPI for the vport.
2929  */
2930 void
2931 lpfc_issue_init_vpi(struct lpfc_vport *vport)
2932 {
2933         LPFC_MBOXQ_t *mboxq;
2934         int rc, vpi;
2935
2936         if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) {
2937                 vpi = lpfc_alloc_vpi(vport->phba);
2938                 if (!vpi) {
2939                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
2940                                          "3303 Failed to obtain vport vpi\n");
2941                         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2942                         return;
2943                 }
2944                 vport->vpi = vpi;
2945         }
2946
2947         mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
2948         if (!mboxq) {
2949                 lpfc_printf_vlog(vport, KERN_ERR,
2950                         LOG_TRACE_EVENT, "2607 Failed to allocate "
2951                         "init_vpi mailbox\n");
2952                 return;
2953         }
2954         lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
2955         mboxq->vport = vport;
2956         mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
2957         rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
2958         if (rc == MBX_NOT_FINISHED) {
2959                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
2960                                  "2608 Failed to issue init_vpi mailbox\n");
2961                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
2962         }
2963 }
2964
2965 /**
2966  * lpfc_start_fdiscs - send fdiscs for each vports on this port.
2967  * @phba: pointer to lpfc hba data structure.
2968  *
2969  * This function loops through the list of vports on the @phba and issues an
2970  * FDISC if possible.
2971  */
2972 void
2973 lpfc_start_fdiscs(struct lpfc_hba *phba)
2974 {
2975         struct lpfc_vport **vports;
2976         int i;
2977
2978         vports = lpfc_create_vport_work_array(phba);
2979         if (vports != NULL) {
2980                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2981                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
2982                                 continue;
2983                         /* There are no vpi for this vport */
2984                         if (vports[i]->vpi > phba->max_vpi) {
2985                                 lpfc_vport_set_state(vports[i],
2986                                                      FC_VPORT_FAILED);
2987                                 continue;
2988                         }
2989                         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
2990                                 lpfc_vport_set_state(vports[i],
2991                                                      FC_VPORT_LINKDOWN);
2992                                 continue;
2993                         }
2994                         if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
2995                                 lpfc_issue_init_vpi(vports[i]);
2996                                 continue;
2997                         }
2998                         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2999                                 lpfc_initial_fdisc(vports[i]);
3000                         else {
3001                                 lpfc_vport_set_state(vports[i],
3002                                                      FC_VPORT_NO_FABRIC_SUPP);
3003                                 lpfc_printf_vlog(vports[i], KERN_ERR,
3004                                                  LOG_TRACE_EVENT,
3005                                                  "0259 No NPIV "
3006                                                  "Fabric support\n");
3007                         }
3008                 }
3009         }
3010         lpfc_destroy_vport_work_array(phba, vports);
3011 }
3012
3013 void
3014 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3015 {
3016         struct lpfc_dmabuf *dmabuf = mboxq->ctx_buf;
3017         struct lpfc_vport *vport = mboxq->vport;
3018         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3019
3020         /*
3021          * VFI not supported for interface type 0, so ignore any mailbox
3022          * error (except VFI in use) and continue with the discovery.
3023          */
3024         if (mboxq->u.mb.mbxStatus &&
3025             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
3026                         LPFC_SLI_INTF_IF_TYPE_0) &&
3027             mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
3028                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3029                                  "2018 REG_VFI mbxStatus error x%x "
3030                                  "HBA state x%x\n",
3031                                  mboxq->u.mb.mbxStatus, vport->port_state);
3032                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3033                         /* FLOGI failed, use loop map to make discovery list */
3034                         lpfc_disc_list_loopmap(vport);
3035                         /* Start discovery */
3036                         lpfc_disc_start(vport);
3037                         goto out_free_mem;
3038                 }
3039                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3040                 goto out_free_mem;
3041         }
3042
3043         /* If the VFI is already registered, there is nothing else to do
3044          * Unless this was a VFI update and we are in PT2PT mode, then
3045          * we should drop through to set the port state to ready.
3046          */
3047         if (vport->fc_flag & FC_VFI_REGISTERED)
3048                 if (!(phba->sli_rev == LPFC_SLI_REV4 &&
3049                       vport->fc_flag & FC_PT2PT))
3050                         goto out_free_mem;
3051
3052         /* The VPI is implicitly registered when the VFI is registered */
3053         spin_lock_irq(shost->host_lock);
3054         vport->vpi_state |= LPFC_VPI_REGISTERED;
3055         vport->fc_flag |= FC_VFI_REGISTERED;
3056         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3057         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
3058         spin_unlock_irq(shost->host_lock);
3059
3060         /* In case SLI4 FC loopback test, we are ready */
3061         if ((phba->sli_rev == LPFC_SLI_REV4) &&
3062             (phba->link_flag & LS_LOOPBACK_MODE)) {
3063                 phba->link_state = LPFC_HBA_READY;
3064                 goto out_free_mem;
3065         }
3066
3067         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3068                          "3313 cmpl reg vfi  port_state:%x fc_flag:%x myDid:%x "
3069                          "alpacnt:%d LinkState:%x topology:%x\n",
3070                          vport->port_state, vport->fc_flag, vport->fc_myDID,
3071                          vport->phba->alpa_map[0],
3072                          phba->link_state, phba->fc_topology);
3073
3074         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3075                 /*
3076                  * For private loop or for NPort pt2pt,
3077                  * just start discovery and we are done.
3078                  */
3079                 if ((vport->fc_flag & FC_PT2PT) ||
3080                     ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) &&
3081                     !(vport->fc_flag & FC_PUBLIC_LOOP))) {
3082
3083                         /* Use loop map to make discovery list */
3084                         lpfc_disc_list_loopmap(vport);
3085                         /* Start discovery */
3086                         if (vport->fc_flag & FC_PT2PT)
3087                                 vport->port_state = LPFC_VPORT_READY;
3088                         else
3089                                 lpfc_disc_start(vport);
3090                 } else {
3091                         lpfc_start_fdiscs(phba);
3092                         lpfc_do_scr_ns_plogi(phba, vport);
3093                 }
3094         }
3095
3096 out_free_mem:
3097         mempool_free(mboxq, phba->mbox_mem_pool);
3098         if (dmabuf) {
3099                 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
3100                 kfree(dmabuf);
3101         }
3102         return;
3103 }
3104
3105 static void
3106 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3107 {
3108         MAILBOX_t *mb = &pmb->u.mb;
3109         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3110         struct lpfc_vport  *vport = pmb->vport;
3111         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3112         struct serv_parm *sp = &vport->fc_sparam;
3113         uint32_t ed_tov;
3114
3115         /* Check for error */
3116         if (mb->mbxStatus) {
3117                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
3118                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3119                                  "0319 READ_SPARAM mbxStatus error x%x "
3120                                  "hba state x%x>\n",
3121                                  mb->mbxStatus, vport->port_state);
3122                 lpfc_linkdown(phba);
3123                 goto out;
3124         }
3125
3126         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
3127                sizeof (struct serv_parm));
3128
3129         ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
3130         if (sp->cmn.edtovResolution)    /* E_D_TOV ticks are in nanoseconds */
3131                 ed_tov = (ed_tov + 999999) / 1000000;
3132
3133         phba->fc_edtov = ed_tov;
3134         phba->fc_ratov = (2 * ed_tov) / 1000;
3135         if (phba->fc_ratov < FF_DEF_RATOV) {
3136                 /* RA_TOV should be atleast 10sec for initial flogi */
3137                 phba->fc_ratov = FF_DEF_RATOV;
3138         }
3139
3140         lpfc_update_vport_wwn(vport);
3141         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
3142         if (vport->port_type == LPFC_PHYSICAL_PORT) {
3143                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
3144                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
3145         }
3146
3147         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3148         kfree(mp);
3149         mempool_free(pmb, phba->mbox_mem_pool);
3150
3151         /* Check if sending the FLOGI is being deferred to after we get
3152          * up to date CSPs from MBX_READ_SPARAM.
3153          */
3154         if (phba->hba_flag & HBA_DEFER_FLOGI) {
3155                 lpfc_initial_flogi(vport);
3156                 phba->hba_flag &= ~HBA_DEFER_FLOGI;
3157         }
3158         return;
3159
3160 out:
3161         pmb->ctx_buf = NULL;
3162         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3163         kfree(mp);
3164         lpfc_issue_clear_la(phba, vport);
3165         mempool_free(pmb, phba->mbox_mem_pool);
3166         return;
3167 }
3168
3169 static void
3170 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
3171 {
3172         struct lpfc_vport *vport = phba->pport;
3173         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
3174         struct Scsi_Host *shost;
3175         int i;
3176         struct lpfc_dmabuf *mp;
3177         int rc;
3178         struct fcf_record *fcf_record;
3179         uint32_t fc_flags = 0;
3180         unsigned long iflags;
3181
3182         spin_lock_irqsave(&phba->hbalock, iflags);
3183         phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la);
3184
3185         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3186                 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) {
3187                 case LPFC_LINK_SPEED_1GHZ:
3188                 case LPFC_LINK_SPEED_2GHZ:
3189                 case LPFC_LINK_SPEED_4GHZ:
3190                 case LPFC_LINK_SPEED_8GHZ:
3191                 case LPFC_LINK_SPEED_10GHZ:
3192                 case LPFC_LINK_SPEED_16GHZ:
3193                 case LPFC_LINK_SPEED_32GHZ:
3194                 case LPFC_LINK_SPEED_64GHZ:
3195                 case LPFC_LINK_SPEED_128GHZ:
3196                         break;
3197                 default:
3198                         phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN;
3199                         break;
3200                 }
3201         }
3202
3203         if (phba->fc_topology &&
3204             phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) {
3205                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
3206                                 "3314 Toplogy changed was 0x%x is 0x%x\n",
3207                                 phba->fc_topology,
3208                                 bf_get(lpfc_mbx_read_top_topology, la));
3209                 phba->fc_topology_changed = 1;
3210         }
3211
3212         phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la);
3213         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
3214
3215         shost = lpfc_shost_from_vport(vport);
3216         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3217                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
3218
3219                 /* if npiv is enabled and this adapter supports npiv log
3220                  * a message that npiv is not supported in this topology
3221                  */
3222                 if (phba->cfg_enable_npiv && phba->max_vpi)
3223                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3224                                 "1309 Link Up Event npiv not supported in loop "
3225                                 "topology\n");
3226                                 /* Get Loop Map information */
3227                 if (bf_get(lpfc_mbx_read_top_il, la))
3228                         fc_flags |= FC_LBIT;
3229
3230                 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la);
3231                 i = la->lilpBde64.tus.f.bdeSize;
3232
3233                 if (i == 0) {
3234                         phba->alpa_map[0] = 0;
3235                 } else {
3236                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
3237                                 int numalpa, j, k;
3238                                 union {
3239                                         uint8_t pamap[16];
3240                                         struct {
3241                                                 uint32_t wd1;
3242                                                 uint32_t wd2;
3243                                                 uint32_t wd3;
3244                                                 uint32_t wd4;
3245                                         } pa;
3246                                 } un;
3247                                 numalpa = phba->alpa_map[0];
3248                                 j = 0;
3249                                 while (j < numalpa) {
3250                                         memset(un.pamap, 0, 16);
3251                                         for (k = 1; j < numalpa; k++) {
3252                                                 un.pamap[k - 1] =
3253                                                         phba->alpa_map[j + 1];
3254                                                 j++;
3255                                                 if (k == 16)
3256                                                         break;
3257                                         }
3258                                         /* Link Up Event ALPA map */
3259                                         lpfc_printf_log(phba,
3260                                                         KERN_WARNING,
3261                                                         LOG_LINK_EVENT,
3262                                                         "1304 Link Up Event "
3263                                                         "ALPA map Data: x%x "
3264                                                         "x%x x%x x%x\n",
3265                                                         un.pa.wd1, un.pa.wd2,
3266                                                         un.pa.wd3, un.pa.wd4);
3267                                 }
3268                         }
3269                 }
3270         } else {
3271                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
3272                         if (phba->max_vpi && phba->cfg_enable_npiv &&
3273                            (phba->sli_rev >= LPFC_SLI_REV3))
3274                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
3275                 }
3276                 vport->fc_myDID = phba->fc_pref_DID;
3277                 fc_flags |= FC_LBIT;
3278         }
3279         spin_unlock_irqrestore(&phba->hbalock, iflags);
3280
3281         if (fc_flags) {
3282                 spin_lock_irqsave(shost->host_lock, iflags);
3283                 vport->fc_flag |= fc_flags;
3284                 spin_unlock_irqrestore(shost->host_lock, iflags);
3285         }
3286
3287         lpfc_linkup(phba);
3288         sparam_mbox = NULL;
3289
3290         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3291         if (!sparam_mbox)
3292                 goto out;
3293
3294         rc = lpfc_read_sparam(phba, sparam_mbox, 0);
3295         if (rc) {
3296                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3297                 goto out;
3298         }
3299         sparam_mbox->vport = vport;
3300         sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
3301         rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
3302         if (rc == MBX_NOT_FINISHED) {
3303                 mp = (struct lpfc_dmabuf *)sparam_mbox->ctx_buf;
3304                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3305                 kfree(mp);
3306                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3307                 goto out;
3308         }
3309
3310         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3311                 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3312                 if (!cfglink_mbox)
3313                         goto out;
3314                 vport->port_state = LPFC_LOCAL_CFG_LINK;
3315                 lpfc_config_link(phba, cfglink_mbox);
3316                 cfglink_mbox->vport = vport;
3317                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
3318                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
3319                 if (rc == MBX_NOT_FINISHED) {
3320                         mempool_free(cfglink_mbox, phba->mbox_mem_pool);
3321                         goto out;
3322                 }
3323         } else {
3324                 vport->port_state = LPFC_VPORT_UNKNOWN;
3325                 /*
3326                  * Add the driver's default FCF record at FCF index 0 now. This
3327                  * is phase 1 implementation that support FCF index 0 and driver
3328                  * defaults.
3329                  */
3330                 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
3331                         fcf_record = kzalloc(sizeof(struct fcf_record),
3332                                         GFP_KERNEL);
3333                         if (unlikely(!fcf_record)) {
3334                                 lpfc_printf_log(phba, KERN_ERR,
3335                                         LOG_TRACE_EVENT,
3336                                         "2554 Could not allocate memory for "
3337                                         "fcf record\n");
3338                                 rc = -ENODEV;
3339                                 goto out;
3340                         }
3341
3342                         lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
3343                                                 LPFC_FCOE_FCF_DEF_INDEX);
3344                         rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
3345                         if (unlikely(rc)) {
3346                                 lpfc_printf_log(phba, KERN_ERR,
3347                                         LOG_TRACE_EVENT,
3348                                         "2013 Could not manually add FCF "
3349                                         "record 0, status %d\n", rc);
3350                                 rc = -ENODEV;
3351                                 kfree(fcf_record);
3352                                 goto out;
3353                         }
3354                         kfree(fcf_record);
3355                 }
3356                 /*
3357                  * The driver is expected to do FIP/FCF. Call the port
3358                  * and get the FCF Table.
3359                  */
3360                 spin_lock_irqsave(&phba->hbalock, iflags);
3361                 if (phba->hba_flag & FCF_TS_INPROG) {
3362                         spin_unlock_irqrestore(&phba->hbalock, iflags);
3363                         return;
3364                 }
3365                 /* This is the initial FCF discovery scan */
3366                 phba->fcf.fcf_flag |= FCF_INIT_DISC;
3367                 spin_unlock_irqrestore(&phba->hbalock, iflags);
3368                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3369                                 "2778 Start FCF table scan at linkup\n");
3370                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
3371                                                      LPFC_FCOE_FCF_GET_FIRST);
3372                 if (rc) {
3373                         spin_lock_irqsave(&phba->hbalock, iflags);
3374                         phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
3375                         spin_unlock_irqrestore(&phba->hbalock, iflags);
3376                         goto out;
3377                 }
3378                 /* Reset FCF roundrobin bmask for new discovery */
3379                 lpfc_sli4_clear_fcf_rr_bmask(phba);
3380         }
3381
3382         /* Prepare for LINK up registrations */
3383         memset(phba->os_host_name, 0, sizeof(phba->os_host_name));
3384         scnprintf(phba->os_host_name, sizeof(phba->os_host_name), "%s",
3385                   init_utsname()->nodename);
3386         return;
3387 out:
3388         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3389         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3390                          "0263 Discovery Mailbox error: state: 0x%x : x%px x%px\n",
3391                          vport->port_state, sparam_mbox, cfglink_mbox);
3392         lpfc_issue_clear_la(phba, vport);
3393         return;
3394 }
3395
3396 static void
3397 lpfc_enable_la(struct lpfc_hba *phba)
3398 {
3399         uint32_t control;
3400         struct lpfc_sli *psli = &phba->sli;
3401         spin_lock_irq(&phba->hbalock);
3402         psli->sli_flag |= LPFC_PROCESS_LA;
3403         if (phba->sli_rev <= LPFC_SLI_REV3) {
3404                 control = readl(phba->HCregaddr);
3405                 control |= HC_LAINT_ENA;
3406                 writel(control, phba->HCregaddr);
3407                 readl(phba->HCregaddr); /* flush */
3408         }
3409         spin_unlock_irq(&phba->hbalock);
3410 }
3411
3412 static void
3413 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
3414 {
3415         lpfc_linkdown(phba);
3416         lpfc_enable_la(phba);
3417         lpfc_unregister_unused_fcf(phba);
3418         /* turn on Link Attention interrupts - no CLEAR_LA needed */
3419 }
3420
3421
3422 /*
3423  * This routine handles processing a READ_TOPOLOGY mailbox
3424  * command upon completion. It is setup in the LPFC_MBOXQ
3425  * as the completion routine when the command is
3426  * handed off to the SLI layer. SLI4 only.
3427  */
3428 void
3429 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3430 {
3431         struct lpfc_vport *vport = pmb->vport;
3432         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3433         struct lpfc_mbx_read_top *la;
3434         struct lpfc_sli_ring *pring;
3435         MAILBOX_t *mb = &pmb->u.mb;
3436         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
3437         uint8_t attn_type;
3438         unsigned long iflags;
3439
3440         /* Unblock ELS traffic */
3441         pring = lpfc_phba_elsring(phba);
3442         if (pring)
3443                 pring->flag &= ~LPFC_STOP_IOCB_EVENT;
3444
3445         /* Check for error */
3446         if (mb->mbxStatus) {
3447                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3448                                 "1307 READ_LA mbox error x%x state x%x\n",
3449                                 mb->mbxStatus, vport->port_state);
3450                 lpfc_mbx_issue_link_down(phba);
3451                 phba->link_state = LPFC_HBA_ERROR;
3452                 goto lpfc_mbx_cmpl_read_topology_free_mbuf;
3453         }
3454
3455         la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
3456         attn_type = bf_get(lpfc_mbx_read_top_att_type, la);
3457
3458         memcpy(&phba->alpa_map[0], mp->virt, 128);
3459
3460         spin_lock_irqsave(shost->host_lock, iflags);
3461         if (bf_get(lpfc_mbx_read_top_pb, la))
3462                 vport->fc_flag |= FC_BYPASSED_MODE;
3463         else
3464                 vport->fc_flag &= ~FC_BYPASSED_MODE;
3465         spin_unlock_irqrestore(shost->host_lock, iflags);
3466
3467         if (phba->fc_eventTag <= la->eventTag) {
3468                 phba->fc_stat.LinkMultiEvent++;
3469                 if (attn_type == LPFC_ATT_LINK_UP)
3470                         if (phba->fc_eventTag != 0)
3471                                 lpfc_linkdown(phba);
3472         }
3473
3474         phba->fc_eventTag = la->eventTag;
3475         if (phba->sli_rev < LPFC_SLI_REV4) {
3476                 spin_lock_irqsave(&phba->hbalock, iflags);
3477                 if (bf_get(lpfc_mbx_read_top_mm, la))
3478                         phba->sli.sli_flag |= LPFC_MENLO_MAINT;
3479                 else
3480                         phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
3481                 spin_unlock_irqrestore(&phba->hbalock, iflags);
3482         }
3483
3484         phba->link_events++;
3485         if ((attn_type == LPFC_ATT_LINK_UP) &&
3486             !(phba->sli.sli_flag & LPFC_MENLO_MAINT)) {
3487                 phba->fc_stat.LinkUp++;
3488                 if (phba->link_flag & LS_LOOPBACK_MODE) {
3489                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3490                                         "1306 Link Up Event in loop back mode "
3491                                         "x%x received Data: x%x x%x x%x x%x\n",
3492                                         la->eventTag, phba->fc_eventTag,
3493                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3494                                                la),
3495                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3496                                         phba->alpa_map[0]);
3497                 } else {
3498                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3499                                         "1303 Link Up Event x%x received "
3500                                         "Data: x%x x%x x%x x%x x%x x%x %d\n",
3501                                         la->eventTag, phba->fc_eventTag,
3502                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3503                                                la),
3504                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3505                                         phba->alpa_map[0],
3506                                         bf_get(lpfc_mbx_read_top_mm, la),
3507                                         bf_get(lpfc_mbx_read_top_fa, la),
3508                                         phba->wait_4_mlo_maint_flg);
3509                 }
3510                 lpfc_mbx_process_link_up(phba, la);
3511         } else if (attn_type == LPFC_ATT_LINK_DOWN ||
3512                    attn_type == LPFC_ATT_UNEXP_WWPN) {
3513                 phba->fc_stat.LinkDown++;
3514                 if (phba->link_flag & LS_LOOPBACK_MODE)
3515                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3516                                 "1308 Link Down Event in loop back mode "
3517                                 "x%x received "
3518                                 "Data: x%x x%x x%x\n",
3519                                 la->eventTag, phba->fc_eventTag,
3520                                 phba->pport->port_state, vport->fc_flag);
3521                 else if (attn_type == LPFC_ATT_UNEXP_WWPN)
3522                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3523                                 "1313 Link Down Unexpected FA WWPN Event x%x "
3524                                 "received Data: x%x x%x x%x x%x x%x\n",
3525                                 la->eventTag, phba->fc_eventTag,
3526                                 phba->pport->port_state, vport->fc_flag,
3527                                 bf_get(lpfc_mbx_read_top_mm, la),
3528                                 bf_get(lpfc_mbx_read_top_fa, la));
3529                 else
3530                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3531                                 "1305 Link Down Event x%x received "
3532                                 "Data: x%x x%x x%x x%x x%x\n",
3533                                 la->eventTag, phba->fc_eventTag,
3534                                 phba->pport->port_state, vport->fc_flag,
3535                                 bf_get(lpfc_mbx_read_top_mm, la),
3536                                 bf_get(lpfc_mbx_read_top_fa, la));
3537                 lpfc_mbx_issue_link_down(phba);
3538         }
3539         if (phba->sli.sli_flag & LPFC_MENLO_MAINT &&
3540             attn_type == LPFC_ATT_LINK_UP) {
3541                 if (phba->link_state != LPFC_LINK_DOWN) {
3542                         phba->fc_stat.LinkDown++;
3543                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3544                                 "1312 Link Down Event x%x received "
3545                                 "Data: x%x x%x x%x\n",
3546                                 la->eventTag, phba->fc_eventTag,
3547                                 phba->pport->port_state, vport->fc_flag);
3548                         lpfc_mbx_issue_link_down(phba);
3549                 } else
3550                         lpfc_enable_la(phba);
3551
3552                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3553                                 "1310 Menlo Maint Mode Link up Event x%x rcvd "
3554                                 "Data: x%x x%x x%x\n",
3555                                 la->eventTag, phba->fc_eventTag,
3556                                 phba->pport->port_state, vport->fc_flag);
3557                 /*
3558                  * The cmnd that triggered this will be waiting for this
3559                  * signal.
3560                  */
3561                 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
3562                 if (phba->wait_4_mlo_maint_flg) {
3563                         phba->wait_4_mlo_maint_flg = 0;
3564                         wake_up_interruptible(&phba->wait_4_mlo_m_q);
3565                 }
3566         }
3567
3568         if ((phba->sli_rev < LPFC_SLI_REV4) &&
3569             bf_get(lpfc_mbx_read_top_fa, la)) {
3570                 if (phba->sli.sli_flag & LPFC_MENLO_MAINT)
3571                         lpfc_issue_clear_la(phba, vport);
3572                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3573                                 "1311 fa %d\n",
3574                                 bf_get(lpfc_mbx_read_top_fa, la));
3575         }
3576
3577 lpfc_mbx_cmpl_read_topology_free_mbuf:
3578         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3579         kfree(mp);
3580         mempool_free(pmb, phba->mbox_mem_pool);
3581         return;
3582 }
3583
3584 /*
3585  * This routine handles processing a REG_LOGIN mailbox
3586  * command upon completion. It is setup in the LPFC_MBOXQ
3587  * as the completion routine when the command is
3588  * handed off to the SLI layer.
3589  */
3590 void
3591 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3592 {
3593         struct lpfc_vport  *vport = pmb->vport;
3594         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
3595         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
3596         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3597
3598         pmb->ctx_buf = NULL;
3599         pmb->ctx_ndlp = NULL;
3600
3601         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3602                          "0002 rpi:%x DID:%x flg:%x %d map:%x x%px\n",
3603                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
3604                          kref_read(&ndlp->kref),
3605                          ndlp->nlp_usg_map, ndlp);
3606         if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
3607                 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
3608
3609         if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL ||
3610             ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
3611                 /* We rcvd a rscn after issuing this
3612                  * mbox reg login, we may have cycled
3613                  * back through the state and be
3614                  * back at reg login state so this
3615                  * mbox needs to be ignored becase
3616                  * there is another reg login in
3617                  * process.
3618                  */
3619                 spin_lock_irq(shost->host_lock);
3620                 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
3621                 spin_unlock_irq(shost->host_lock);
3622
3623                 /*
3624                  * We cannot leave the RPI registered because
3625                  * if we go thru discovery again for this ndlp
3626                  * a subsequent REG_RPI will fail.
3627                  */
3628                 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3629                 lpfc_unreg_rpi(vport, ndlp);
3630         }
3631
3632         /* Call state machine */
3633         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
3634
3635         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3636         kfree(mp);
3637         mempool_free(pmb, phba->mbox_mem_pool);
3638         /* decrement the node reference count held for this callback
3639          * function.
3640          */
3641         lpfc_nlp_put(ndlp);
3642
3643         return;
3644 }
3645
3646 static void
3647 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3648 {
3649         MAILBOX_t *mb = &pmb->u.mb;
3650         struct lpfc_vport *vport = pmb->vport;
3651         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3652
3653         switch (mb->mbxStatus) {
3654         case 0x0011:
3655         case 0x0020:
3656                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3657                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
3658                                  mb->mbxStatus);
3659                 break;
3660         /* If VPI is busy, reset the HBA */
3661         case 0x9700:
3662                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3663                         "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n",
3664                         vport->vpi, mb->mbxStatus);
3665                 if (!(phba->pport->load_flag & FC_UNLOADING))
3666                         lpfc_workq_post_event(phba, NULL, NULL,
3667                                 LPFC_EVT_RESET_HBA);
3668         }
3669         spin_lock_irq(shost->host_lock);
3670         vport->vpi_state &= ~LPFC_VPI_REGISTERED;
3671         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3672         spin_unlock_irq(shost->host_lock);
3673         vport->unreg_vpi_cmpl = VPORT_OK;
3674         mempool_free(pmb, phba->mbox_mem_pool);
3675         lpfc_cleanup_vports_rrqs(vport, NULL);
3676         /*
3677          * This shost reference might have been taken at the beginning of
3678          * lpfc_vport_delete()
3679          */
3680         if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
3681                 scsi_host_put(shost);
3682 }
3683
3684 int
3685 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
3686 {
3687         struct lpfc_hba  *phba = vport->phba;
3688         LPFC_MBOXQ_t *mbox;
3689         int rc;
3690
3691         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3692         if (!mbox)
3693                 return 1;
3694
3695         lpfc_unreg_vpi(phba, vport->vpi, mbox);
3696         mbox->vport = vport;
3697         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
3698         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3699         if (rc == MBX_NOT_FINISHED) {
3700                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3701                                  "1800 Could not issue unreg_vpi\n");
3702                 mempool_free(mbox, phba->mbox_mem_pool);
3703                 vport->unreg_vpi_cmpl = VPORT_ERROR;
3704                 return rc;
3705         }
3706         return 0;
3707 }
3708
3709 static void
3710 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3711 {
3712         struct lpfc_vport *vport = pmb->vport;
3713         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3714         MAILBOX_t *mb = &pmb->u.mb;
3715
3716         switch (mb->mbxStatus) {
3717         case 0x0011:
3718         case 0x9601:
3719         case 0x9602:
3720                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3721                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
3722                                  mb->mbxStatus);
3723                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3724                 spin_lock_irq(shost->host_lock);
3725                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
3726                 spin_unlock_irq(shost->host_lock);
3727                 vport->fc_myDID = 0;
3728
3729                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
3730                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
3731                         if (phba->nvmet_support)
3732                                 lpfc_nvmet_update_targetport(phba);
3733                         else
3734                                 lpfc_nvme_update_localport(vport);
3735                 }
3736                 goto out;
3737         }
3738
3739         spin_lock_irq(shost->host_lock);
3740         vport->vpi_state |= LPFC_VPI_REGISTERED;
3741         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3742         spin_unlock_irq(shost->host_lock);
3743         vport->num_disc_nodes = 0;
3744         /* go thru NPR list and issue ELS PLOGIs */
3745         if (vport->fc_npr_cnt)
3746                 lpfc_els_disc_plogi(vport);
3747
3748         if (!vport->num_disc_nodes) {
3749                 spin_lock_irq(shost->host_lock);
3750                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
3751                 spin_unlock_irq(shost->host_lock);
3752                 lpfc_can_disctmo(vport);
3753         }
3754         vport->port_state = LPFC_VPORT_READY;
3755
3756 out:
3757         mempool_free(pmb, phba->mbox_mem_pool);
3758         return;
3759 }
3760
3761 /**
3762  * lpfc_create_static_vport - Read HBA config region to create static vports.
3763  * @phba: pointer to lpfc hba data structure.
3764  *
3765  * This routine issue a DUMP mailbox command for config region 22 to get
3766  * the list of static vports to be created. The function create vports
3767  * based on the information returned from the HBA.
3768  **/
3769 void
3770 lpfc_create_static_vport(struct lpfc_hba *phba)
3771 {
3772         LPFC_MBOXQ_t *pmb = NULL;
3773         MAILBOX_t *mb;
3774         struct static_vport_info *vport_info;
3775         int mbx_wait_rc = 0, i;
3776         struct fc_vport_identifiers vport_id;
3777         struct fc_vport *new_fc_vport;
3778         struct Scsi_Host *shost;
3779         struct lpfc_vport *vport;
3780         uint16_t offset = 0;
3781         uint8_t *vport_buff;
3782         struct lpfc_dmabuf *mp;
3783         uint32_t byte_count = 0;
3784
3785         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3786         if (!pmb) {
3787                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3788                                 "0542 lpfc_create_static_vport failed to"
3789                                 " allocate mailbox memory\n");
3790                 return;
3791         }
3792         memset(pmb, 0, sizeof(LPFC_MBOXQ_t));
3793         mb = &pmb->u.mb;
3794
3795         vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
3796         if (!vport_info) {
3797                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3798                                 "0543 lpfc_create_static_vport failed to"
3799                                 " allocate vport_info\n");
3800                 mempool_free(pmb, phba->mbox_mem_pool);
3801                 return;
3802         }
3803
3804         vport_buff = (uint8_t *) vport_info;
3805         do {
3806                 /* free dma buffer from previous round */
3807                 if (pmb->ctx_buf) {
3808                         mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3809                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3810                         kfree(mp);
3811                 }
3812                 if (lpfc_dump_static_vport(phba, pmb, offset))
3813                         goto out;
3814
3815                 pmb->vport = phba->pport;
3816                 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb,
3817                                                         LPFC_MBOX_TMO);
3818
3819                 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) {
3820                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3821                                 "0544 lpfc_create_static_vport failed to"
3822                                 " issue dump mailbox command ret 0x%x "
3823                                 "status 0x%x\n",
3824                                 mbx_wait_rc, mb->mbxStatus);
3825                         goto out;
3826                 }
3827
3828                 if (phba->sli_rev == LPFC_SLI_REV4) {
3829                         byte_count = pmb->u.mqe.un.mb_words[5];
3830                         mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3831                         if (byte_count > sizeof(struct static_vport_info) -
3832                                         offset)
3833                                 byte_count = sizeof(struct static_vport_info)
3834                                         - offset;
3835                         memcpy(vport_buff + offset, mp->virt, byte_count);
3836                         offset += byte_count;
3837                 } else {
3838                         if (mb->un.varDmp.word_cnt >
3839                                 sizeof(struct static_vport_info) - offset)
3840                                 mb->un.varDmp.word_cnt =
3841                                         sizeof(struct static_vport_info)
3842                                                 - offset;
3843                         byte_count = mb->un.varDmp.word_cnt;
3844                         lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
3845                                 vport_buff + offset,
3846                                 byte_count);
3847
3848                         offset += byte_count;
3849                 }
3850
3851         } while (byte_count &&
3852                 offset < sizeof(struct static_vport_info));
3853
3854
3855         if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
3856                 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
3857                         != VPORT_INFO_REV)) {
3858                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3859                                 "0545 lpfc_create_static_vport bad"
3860                                 " information header 0x%x 0x%x\n",
3861                                 le32_to_cpu(vport_info->signature),
3862                                 le32_to_cpu(vport_info->rev) &
3863                                 VPORT_INFO_REV_MASK);
3864
3865                 goto out;
3866         }
3867
3868         shost = lpfc_shost_from_vport(phba->pport);
3869
3870         for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
3871                 memset(&vport_id, 0, sizeof(vport_id));
3872                 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
3873                 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
3874                 if (!vport_id.port_name || !vport_id.node_name)
3875                         continue;
3876
3877                 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
3878                 vport_id.vport_type = FC_PORTTYPE_NPIV;
3879                 vport_id.disable = false;
3880                 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
3881
3882                 if (!new_fc_vport) {
3883                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3884                                 "0546 lpfc_create_static_vport failed to"
3885                                 " create vport\n");
3886                         continue;
3887                 }
3888
3889                 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
3890                 vport->vport_flag |= STATIC_VPORT;
3891         }
3892
3893 out:
3894         kfree(vport_info);
3895         if (mbx_wait_rc != MBX_TIMEOUT) {
3896                 if (pmb->ctx_buf) {
3897                         mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3898                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3899                         kfree(mp);
3900                 }
3901                 mempool_free(pmb, phba->mbox_mem_pool);
3902         }
3903
3904         return;
3905 }
3906
3907 /*
3908  * This routine handles processing a Fabric REG_LOGIN mailbox
3909  * command upon completion. It is setup in the LPFC_MBOXQ
3910  * as the completion routine when the command is
3911  * handed off to the SLI layer.
3912  */
3913 void
3914 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3915 {
3916         struct lpfc_vport *vport = pmb->vport;
3917         MAILBOX_t *mb = &pmb->u.mb;
3918         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
3919         struct lpfc_nodelist *ndlp;
3920         struct Scsi_Host *shost;
3921
3922         ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
3923         pmb->ctx_ndlp = NULL;
3924         pmb->ctx_buf = NULL;
3925
3926         if (mb->mbxStatus) {
3927                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3928                                  "0258 Register Fabric login error: 0x%x\n",
3929                                  mb->mbxStatus);
3930                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3931                 kfree(mp);
3932                 mempool_free(pmb, phba->mbox_mem_pool);
3933
3934                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3935                         /* FLOGI failed, use loop map to make discovery list */
3936                         lpfc_disc_list_loopmap(vport);
3937
3938                         /* Start discovery */
3939                         lpfc_disc_start(vport);
3940                         /* Decrement the reference count to ndlp after the
3941                          * reference to the ndlp are done.
3942                          */
3943                         lpfc_nlp_put(ndlp);
3944                         return;
3945                 }
3946
3947                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3948                 /* Decrement the reference count to ndlp after the reference
3949                  * to the ndlp are done.
3950                  */
3951                 lpfc_nlp_put(ndlp);
3952                 return;
3953         }
3954
3955         if (phba->sli_rev < LPFC_SLI_REV4)
3956                 ndlp->nlp_rpi = mb->un.varWords[0];
3957         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3958         ndlp->nlp_type |= NLP_FABRIC;
3959         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3960
3961         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3962                 /* when physical port receive logo donot start
3963                  * vport discovery */
3964                 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
3965                         lpfc_start_fdiscs(phba);
3966                 else {
3967                         shost = lpfc_shost_from_vport(vport);
3968                         spin_lock_irq(shost->host_lock);
3969                         vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ;
3970                         spin_unlock_irq(shost->host_lock);
3971                 }
3972                 lpfc_do_scr_ns_plogi(phba, vport);
3973         }
3974
3975         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3976         kfree(mp);
3977         mempool_free(pmb, phba->mbox_mem_pool);
3978
3979         /* Drop the reference count from the mbox at the end after
3980          * all the current reference to the ndlp have been done.
3981          */
3982         lpfc_nlp_put(ndlp);
3983         return;
3984 }
3985
3986  /*
3987   * This routine will issue a GID_FT for each FC4 Type supported
3988   * by the driver. ALL GID_FTs must complete before discovery is started.
3989   */
3990 int
3991 lpfc_issue_gidft(struct lpfc_vport *vport)
3992 {
3993         /* Good status, issue CT Request to NameServer */
3994         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
3995             (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) {
3996                 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_FCP)) {
3997                         /* Cannot issue NameServer FCP Query, so finish up
3998                          * discovery
3999                          */
4000                         lpfc_printf_vlog(vport, KERN_ERR,
4001                                          LOG_TRACE_EVENT,
4002                                          "0604 %s FC TYPE %x %s\n",
4003                                          "Failed to issue GID_FT to ",
4004                                          FC_TYPE_FCP,
4005                                          "Finishing discovery.");
4006                         return 0;
4007                 }
4008                 vport->gidft_inp++;
4009         }
4010
4011         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4012             (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
4013                 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_NVME)) {
4014                         /* Cannot issue NameServer NVME Query, so finish up
4015                          * discovery
4016                          */
4017                         lpfc_printf_vlog(vport, KERN_ERR,
4018                                          LOG_TRACE_EVENT,
4019                                          "0605 %s FC_TYPE %x %s %d\n",
4020                                          "Failed to issue GID_FT to ",
4021                                          FC_TYPE_NVME,
4022                                          "Finishing discovery: gidftinp ",
4023                                          vport->gidft_inp);
4024                         if (vport->gidft_inp == 0)
4025                                 return 0;
4026                 } else
4027                         vport->gidft_inp++;
4028         }
4029         return vport->gidft_inp;
4030 }
4031
4032 /**
4033  * lpfc_issue_gidpt - issue a GID_PT for all N_Ports
4034  * @vport: The virtual port for which this call is being executed.
4035  *
4036  * This routine will issue a GID_PT to get a list of all N_Ports
4037  *
4038  * Return value :
4039  *   0 - Failure to issue a GID_PT
4040  *   1 - GID_PT issued
4041  **/
4042 int
4043 lpfc_issue_gidpt(struct lpfc_vport *vport)
4044 {
4045         /* Good status, issue CT Request to NameServer */
4046         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) {
4047                 /* Cannot issue NameServer FCP Query, so finish up
4048                  * discovery
4049                  */
4050                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4051                                  "0606 %s Port TYPE %x %s\n",
4052                                  "Failed to issue GID_PT to ",
4053                                  GID_PT_N_PORT,
4054                                  "Finishing discovery.");
4055                 return 0;
4056         }
4057         vport->gidft_inp++;
4058         return 1;
4059 }
4060
4061 /*
4062  * This routine handles processing a NameServer REG_LOGIN mailbox
4063  * command upon completion. It is setup in the LPFC_MBOXQ
4064  * as the completion routine when the command is
4065  * handed off to the SLI layer.
4066  */
4067 void
4068 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4069 {
4070         MAILBOX_t *mb = &pmb->u.mb;
4071         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
4072         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4073         struct lpfc_vport *vport = pmb->vport;
4074
4075         pmb->ctx_buf = NULL;
4076         pmb->ctx_ndlp = NULL;
4077         vport->gidft_inp = 0;
4078
4079         if (mb->mbxStatus) {
4080                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4081                                  "0260 Register NameServer error: 0x%x\n",
4082                                  mb->mbxStatus);
4083
4084 out:
4085                 /* decrement the node reference count held for this
4086                  * callback function.
4087                  */
4088                 lpfc_nlp_put(ndlp);
4089                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
4090                 kfree(mp);
4091                 mempool_free(pmb, phba->mbox_mem_pool);
4092
4093                 /* If no other thread is using the ndlp, free it */
4094                 lpfc_nlp_not_used(ndlp);
4095
4096                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4097                         /*
4098                          * RegLogin failed, use loop map to make discovery
4099                          * list
4100                          */
4101                         lpfc_disc_list_loopmap(vport);
4102
4103                         /* Start discovery */
4104                         lpfc_disc_start(vport);
4105                         return;
4106                 }
4107                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
4108                 return;
4109         }
4110
4111         if (phba->sli_rev < LPFC_SLI_REV4)
4112                 ndlp->nlp_rpi = mb->un.varWords[0];
4113         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4114         ndlp->nlp_type |= NLP_FABRIC;
4115         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4116         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
4117                          "0003 rpi:%x DID:%x flg:%x %d map%x x%px\n",
4118                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
4119                          kref_read(&ndlp->kref),
4120                          ndlp->nlp_usg_map, ndlp);
4121
4122         if (vport->port_state < LPFC_VPORT_READY) {
4123                 /* Link up discovery requires Fabric registration. */
4124                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
4125                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
4126                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
4127                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
4128
4129                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4130                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP))
4131                         lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, FC_TYPE_FCP);
4132
4133                 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4134                     (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME))
4135                         lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0,
4136                                     FC_TYPE_NVME);
4137
4138                 /* Issue SCR just before NameServer GID_FT Query */
4139                 lpfc_issue_els_scr(vport, 0);
4140
4141                 lpfc_issue_els_rdf(vport, 0);
4142         }
4143
4144         vport->fc_ns_retry = 0;
4145         if (lpfc_issue_gidft(vport) == 0)
4146                 goto out;
4147
4148         /*
4149          * At this point in time we may need to wait for multiple
4150          * SLI_CTNS_GID_FT CT commands to complete before we start discovery.
4151          *
4152          * decrement the node reference count held for this
4153          * callback function.
4154          */
4155         lpfc_nlp_put(ndlp);
4156         lpfc_mbuf_free(phba, mp->virt, mp->phys);
4157         kfree(mp);
4158         mempool_free(pmb, phba->mbox_mem_pool);
4159
4160         return;
4161 }
4162
4163 static void
4164 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4165 {
4166         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4167         struct fc_rport  *rport;
4168         struct lpfc_rport_data *rdata;
4169         struct fc_rport_identifiers rport_ids;
4170         struct lpfc_hba  *phba = vport->phba;
4171
4172         if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4173                 return;
4174
4175         /* Remote port has reappeared. Re-register w/ FC transport */
4176         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
4177         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
4178         rport_ids.port_id = ndlp->nlp_DID;
4179         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
4180
4181         /*
4182          * We leave our node pointer in rport->dd_data when we unregister a
4183          * FCP target port.  But fc_remote_port_add zeros the space to which
4184          * rport->dd_data points.  So, if we're reusing a previously
4185          * registered port, drop the reference that we took the last time we
4186          * registered the port.
4187          */
4188         rport = ndlp->rport;
4189         if (rport) {
4190                 rdata = rport->dd_data;
4191                 /* break the link before dropping the ref */
4192                 ndlp->rport = NULL;
4193                 if (rdata) {
4194                         if (rdata->pnode == ndlp)
4195                                 lpfc_nlp_put(ndlp);
4196                         rdata->pnode = NULL;
4197                 }
4198                 /* drop reference for earlier registeration */
4199                 put_device(&rport->dev);
4200         }
4201
4202         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4203                 "rport add:       did:x%x flg:x%x type x%x",
4204                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4205
4206         /* Don't add the remote port if unloading. */
4207         if (vport->load_flag & FC_UNLOADING)
4208                 return;
4209
4210         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
4211         if (!rport || !get_device(&rport->dev)) {
4212                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
4213                            "Warning: fc_remote_port_add failed\n");
4214                 return;
4215         }
4216
4217         /* initialize static port data */
4218         rport->maxframe_size = ndlp->nlp_maxframe;
4219         rport->supported_classes = ndlp->nlp_class_sup;
4220         rdata = rport->dd_data;
4221         rdata->pnode = lpfc_nlp_get(ndlp);
4222
4223         if (ndlp->nlp_type & NLP_FCP_TARGET)
4224                 rport_ids.roles |= FC_PORT_ROLE_FCP_TARGET;
4225         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
4226                 rport_ids.roles |= FC_PORT_ROLE_FCP_INITIATOR;
4227         if (ndlp->nlp_type & NLP_NVME_INITIATOR)
4228                 rport_ids.roles |= FC_PORT_ROLE_NVME_INITIATOR;
4229         if (ndlp->nlp_type & NLP_NVME_TARGET)
4230                 rport_ids.roles |= FC_PORT_ROLE_NVME_TARGET;
4231         if (ndlp->nlp_type & NLP_NVME_DISCOVERY)
4232                 rport_ids.roles |= FC_PORT_ROLE_NVME_DISCOVERY;
4233
4234         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
4235                 fc_remote_port_rolechg(rport, rport_ids.roles);
4236
4237         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
4238                          "3183 rport register x%06x, rport x%px role x%x\n",
4239                          ndlp->nlp_DID, rport, rport_ids.roles);
4240
4241         if ((rport->scsi_target_id != -1) &&
4242             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
4243                 ndlp->nlp_sid = rport->scsi_target_id;
4244         }
4245         return;
4246 }
4247
4248 static void
4249 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
4250 {
4251         struct fc_rport *rport = ndlp->rport;
4252         struct lpfc_vport *vport = ndlp->vport;
4253
4254         if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4255                 return;
4256
4257         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4258                 "rport delete:    did:x%x flg:x%x type x%x",
4259                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4260
4261         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4262                          "3184 rport unregister x%06x, rport x%px\n",
4263                          ndlp->nlp_DID, rport);
4264
4265         fc_remote_port_delete(rport);
4266
4267         return;
4268 }
4269
4270 static void
4271 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
4272 {
4273         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4274         unsigned long iflags;
4275
4276         spin_lock_irqsave(shost->host_lock, iflags);
4277         switch (state) {
4278         case NLP_STE_UNUSED_NODE:
4279                 vport->fc_unused_cnt += count;
4280                 break;
4281         case NLP_STE_PLOGI_ISSUE:
4282                 vport->fc_plogi_cnt += count;
4283                 break;
4284         case NLP_STE_ADISC_ISSUE:
4285                 vport->fc_adisc_cnt += count;
4286                 break;
4287         case NLP_STE_REG_LOGIN_ISSUE:
4288                 vport->fc_reglogin_cnt += count;
4289                 break;
4290         case NLP_STE_PRLI_ISSUE:
4291                 vport->fc_prli_cnt += count;
4292                 break;
4293         case NLP_STE_UNMAPPED_NODE:
4294                 vport->fc_unmap_cnt += count;
4295                 break;
4296         case NLP_STE_MAPPED_NODE:
4297                 vport->fc_map_cnt += count;
4298                 break;
4299         case NLP_STE_NPR_NODE:
4300                 if (vport->fc_npr_cnt == 0 && count == -1)
4301                         vport->fc_npr_cnt = 0;
4302                 else
4303                         vport->fc_npr_cnt += count;
4304                 break;
4305         }
4306         spin_unlock_irqrestore(shost->host_lock, iflags);
4307 }
4308
4309 static void
4310 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4311                        int old_state, int new_state)
4312 {
4313         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4314
4315         if (new_state == NLP_STE_UNMAPPED_NODE) {
4316                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4317                 ndlp->nlp_type |= NLP_FC_NODE;
4318         }
4319         if (new_state == NLP_STE_MAPPED_NODE)
4320                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4321         if (new_state == NLP_STE_NPR_NODE)
4322                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
4323
4324         /* FCP and NVME Transport interface */
4325         if ((old_state == NLP_STE_MAPPED_NODE ||
4326              old_state == NLP_STE_UNMAPPED_NODE)) {
4327                 if (ndlp->rport) {
4328                         vport->phba->nport_event_cnt++;
4329                         lpfc_unregister_remote_port(ndlp);
4330                 }
4331
4332                 if (ndlp->nlp_fc4_type & NLP_FC4_NVME) {
4333                         vport->phba->nport_event_cnt++;
4334                         if (vport->phba->nvmet_support == 0) {
4335                                 /* Start devloss if target. */
4336                                 if (ndlp->nlp_type & NLP_NVME_TARGET)
4337                                         lpfc_nvme_unregister_port(vport, ndlp);
4338                         } else {
4339                                 /* NVMET has no upcall. */
4340                                 lpfc_nlp_put(ndlp);
4341                         }
4342                 }
4343         }
4344
4345         /* FCP and NVME Transport interfaces */
4346
4347         if (new_state ==  NLP_STE_MAPPED_NODE ||
4348             new_state == NLP_STE_UNMAPPED_NODE) {
4349                 if (ndlp->nlp_fc4_type ||
4350                     ndlp->nlp_DID == Fabric_DID ||
4351                     ndlp->nlp_DID == NameServer_DID ||
4352                     ndlp->nlp_DID == FDMI_DID) {
4353                         vport->phba->nport_event_cnt++;
4354                         /*
4355                          * Tell the fc transport about the port, if we haven't
4356                          * already. If we have, and it's a scsi entity, be
4357                          */
4358                         lpfc_register_remote_port(vport, ndlp);
4359                 }
4360                 /* Notify the NVME transport of this new rport. */
4361                 if (vport->phba->sli_rev >= LPFC_SLI_REV4 &&
4362                     ndlp->nlp_fc4_type & NLP_FC4_NVME) {
4363                         if (vport->phba->nvmet_support == 0) {
4364                                 /* Register this rport with the transport.
4365                                  * Only NVME Target Rports are registered with
4366                                  * the transport.
4367                                  */
4368                                 if (ndlp->nlp_type & NLP_NVME_TARGET) {
4369                                         vport->phba->nport_event_cnt++;
4370                                         lpfc_nvme_register_port(vport, ndlp);
4371                                 }
4372                         } else {
4373                                 /* Just take an NDLP ref count since the
4374                                  * target does not register rports.
4375                                  */
4376                                 lpfc_nlp_get(ndlp);
4377                         }
4378                 }
4379         }
4380
4381         if ((new_state ==  NLP_STE_MAPPED_NODE) &&
4382                 (vport->stat_data_enabled)) {
4383                 /*
4384                  * A new target is discovered, if there is no buffer for
4385                  * statistical data collection allocate buffer.
4386                  */
4387                 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
4388                                          sizeof(struct lpfc_scsicmd_bkt),
4389                                          GFP_KERNEL);
4390
4391                 if (!ndlp->lat_data)
4392                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4393                                 "0286 lpfc_nlp_state_cleanup failed to "
4394                                 "allocate statistical data buffer DID "
4395                                 "0x%x\n", ndlp->nlp_DID);
4396         }
4397         /*
4398          * If the node just added to Mapped list was an FCP target,
4399          * but the remote port registration failed or assigned a target
4400          * id outside the presentable range - move the node to the
4401          * Unmapped List.
4402          */
4403         if ((new_state == NLP_STE_MAPPED_NODE) &&
4404             (ndlp->nlp_type & NLP_FCP_TARGET) &&
4405             (!ndlp->rport ||
4406              ndlp->rport->scsi_target_id == -1 ||
4407              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
4408                 spin_lock_irq(shost->host_lock);
4409                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
4410                 spin_unlock_irq(shost->host_lock);
4411                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4412         }
4413 }
4414
4415 static char *
4416 lpfc_nlp_state_name(char *buffer, size_t size, int state)
4417 {
4418         static char *states[] = {
4419                 [NLP_STE_UNUSED_NODE] = "UNUSED",
4420                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
4421                 [NLP_STE_ADISC_ISSUE] = "ADISC",
4422                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
4423                 [NLP_STE_PRLI_ISSUE] = "PRLI",
4424                 [NLP_STE_LOGO_ISSUE] = "LOGO",
4425                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
4426                 [NLP_STE_MAPPED_NODE] = "MAPPED",
4427                 [NLP_STE_NPR_NODE] = "NPR",
4428         };
4429
4430         if (state < NLP_STE_MAX_STATE && states[state])
4431                 strlcpy(buffer, states[state], size);
4432         else
4433                 snprintf(buffer, size, "unknown (%d)", state);
4434         return buffer;
4435 }
4436
4437 void
4438 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4439                    int state)
4440 {
4441         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4442         int  old_state = ndlp->nlp_state;
4443         char name1[16], name2[16];
4444
4445         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4446                          "0904 NPort state transition x%06x, %s -> %s\n",
4447                          ndlp->nlp_DID,
4448                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
4449                          lpfc_nlp_state_name(name2, sizeof(name2), state));
4450
4451         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4452                 "node statechg    did:x%x old:%d ste:%d",
4453                 ndlp->nlp_DID, old_state, state);
4454
4455         if (old_state == NLP_STE_NPR_NODE &&
4456             state != NLP_STE_NPR_NODE)
4457                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4458         if (old_state == NLP_STE_UNMAPPED_NODE) {
4459                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
4460                 ndlp->nlp_type &= ~NLP_FC_NODE;
4461         }
4462
4463         if (list_empty(&ndlp->nlp_listp)) {
4464                 spin_lock_irq(shost->host_lock);
4465                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4466                 spin_unlock_irq(shost->host_lock);
4467         } else if (old_state)
4468                 lpfc_nlp_counters(vport, old_state, -1);
4469
4470         ndlp->nlp_state = state;
4471         lpfc_nlp_counters(vport, state, 1);
4472         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
4473 }
4474
4475 void
4476 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4477 {
4478         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4479
4480         if (list_empty(&ndlp->nlp_listp)) {
4481                 spin_lock_irq(shost->host_lock);
4482                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4483                 spin_unlock_irq(shost->host_lock);
4484         }
4485 }
4486
4487 void
4488 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4489 {
4490         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4491
4492         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4493         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4494                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4495         spin_lock_irq(shost->host_lock);
4496         list_del_init(&ndlp->nlp_listp);
4497         spin_unlock_irq(shost->host_lock);
4498         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4499                                 NLP_STE_UNUSED_NODE);
4500 }
4501
4502 static void
4503 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4504 {
4505         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4506         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4507                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4508         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4509                                 NLP_STE_UNUSED_NODE);
4510 }
4511 /**
4512  * lpfc_initialize_node - Initialize all fields of node object
4513  * @vport: Pointer to Virtual Port object.
4514  * @ndlp: Pointer to FC node object.
4515  * @did: FC_ID of the node.
4516  *
4517  * This function is always called when node object need to be initialized.
4518  * It initializes all the fields of the node object. Although the reference
4519  * to phba from @ndlp can be obtained indirectly through it's reference to
4520  * @vport, a direct reference to phba is taken here by @ndlp. This is due
4521  * to the life-span of the @ndlp might go beyond the existence of @vport as
4522  * the final release of ndlp is determined by its reference count. And, the
4523  * operation on @ndlp needs the reference to phba.
4524  **/
4525 static inline void
4526 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4527         uint32_t did)
4528 {
4529         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
4530         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
4531         timer_setup(&ndlp->nlp_delayfunc, lpfc_els_retry_delay, 0);
4532         INIT_LIST_HEAD(&ndlp->recovery_evt.evt_listp);
4533
4534         ndlp->nlp_DID = did;
4535         ndlp->vport = vport;
4536         ndlp->phba = vport->phba;
4537         ndlp->nlp_sid = NLP_NO_SID;
4538         ndlp->nlp_fc4_type = NLP_FC4_NONE;
4539         kref_init(&ndlp->kref);
4540         NLP_INT_NODE_ACT(ndlp);
4541         atomic_set(&ndlp->cmd_pending, 0);
4542         ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
4543         ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
4544 }
4545
4546 struct lpfc_nodelist *
4547 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4548                  int state)
4549 {
4550         struct lpfc_hba *phba = vport->phba;
4551         uint32_t did, flag;
4552         unsigned long flags;
4553         unsigned long *active_rrqs_xri_bitmap = NULL;
4554         int rpi = LPFC_RPI_ALLOC_ERROR;
4555         uint32_t defer_did = 0;
4556
4557         if (!ndlp)
4558                 return NULL;
4559
4560         if (phba->sli_rev == LPFC_SLI_REV4) {
4561                 if (ndlp->nlp_rpi == LPFC_RPI_ALLOC_ERROR)
4562                         rpi = lpfc_sli4_alloc_rpi(vport->phba);
4563                 else
4564                         rpi = ndlp->nlp_rpi;
4565
4566                 if (rpi == LPFC_RPI_ALLOC_ERROR) {
4567                         lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4568                                          "0359 %s: ndlp:x%px "
4569                                          "usgmap:x%x refcnt:%d FAILED RPI "
4570                                          " ALLOC\n",
4571                                          __func__,
4572                                          (void *)ndlp, ndlp->nlp_usg_map,
4573                                          kref_read(&ndlp->kref));
4574                         return NULL;
4575                 }
4576         }
4577
4578         spin_lock_irqsave(&phba->ndlp_lock, flags);
4579         /* The ndlp should not be in memory free mode */
4580         if (NLP_CHK_FREE_REQ(ndlp)) {
4581                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4582                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4583                                 "0277 %s: ndlp:x%px "
4584                                 "usgmap:x%x refcnt:%d\n",
4585                                 __func__, (void *)ndlp, ndlp->nlp_usg_map,
4586                                 kref_read(&ndlp->kref));
4587                 goto free_rpi;
4588         }
4589         /* The ndlp should not already be in active mode */
4590         if (NLP_CHK_NODE_ACT(ndlp)) {
4591                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4592                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4593                                 "0278 %s: ndlp:x%px "
4594                                 "usgmap:x%x refcnt:%d\n",
4595                                 __func__, (void *)ndlp, ndlp->nlp_usg_map,
4596                                 kref_read(&ndlp->kref));
4597                 goto free_rpi;
4598         }
4599
4600         /* First preserve the orginal DID, xri_bitmap and some flags */
4601         did = ndlp->nlp_DID;
4602         flag = (ndlp->nlp_flag & NLP_UNREG_INP);
4603         if (flag & NLP_UNREG_INP)
4604                 defer_did = ndlp->nlp_defer_did;
4605         if (phba->sli_rev == LPFC_SLI_REV4)
4606                 active_rrqs_xri_bitmap = ndlp->active_rrqs_xri_bitmap;
4607
4608         /* Zero ndlp except of ndlp linked list pointer */
4609         memset((((char *)ndlp) + sizeof (struct list_head)), 0,
4610                 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
4611
4612         /* Next reinitialize and restore saved objects */
4613         lpfc_initialize_node(vport, ndlp, did);
4614         ndlp->nlp_flag |= flag;
4615         if (flag & NLP_UNREG_INP)
4616                 ndlp->nlp_defer_did = defer_did;
4617         if (phba->sli_rev == LPFC_SLI_REV4)
4618                 ndlp->active_rrqs_xri_bitmap = active_rrqs_xri_bitmap;
4619
4620         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4621         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4622                 ndlp->nlp_rpi = rpi;
4623                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4624                                  "0008 rpi:%x DID:%x flg:%x refcnt:%d "
4625                                  "map:%x x%px\n", ndlp->nlp_rpi, ndlp->nlp_DID,
4626                                  ndlp->nlp_flag,
4627                                  kref_read(&ndlp->kref),
4628                                  ndlp->nlp_usg_map, ndlp);
4629         }
4630
4631
4632         if (state != NLP_STE_UNUSED_NODE)
4633                 lpfc_nlp_set_state(vport, ndlp, state);
4634         else
4635                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4636                                  "0013 rpi:%x DID:%x flg:%x refcnt:%d "
4637                                  "map:%x x%px STATE=UNUSED\n",
4638                                  ndlp->nlp_rpi, ndlp->nlp_DID,
4639                                  ndlp->nlp_flag,
4640                                  kref_read(&ndlp->kref),
4641                                  ndlp->nlp_usg_map, ndlp);
4642
4643         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4644                 "node enable:       did:x%x",
4645                 ndlp->nlp_DID, 0, 0);
4646         return ndlp;
4647
4648 free_rpi:
4649         if (phba->sli_rev == LPFC_SLI_REV4) {
4650                 lpfc_sli4_free_rpi(vport->phba, rpi);
4651                 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
4652         }
4653         return NULL;
4654 }
4655
4656 void
4657 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4658 {
4659         /*
4660          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
4661          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
4662          * the ndlp from the vport. The ndlp marked as UNUSED on the list
4663          * until ALL other outstanding threads have completed. We check
4664          * that the ndlp not already in the UNUSED state before we proceed.
4665          */
4666         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
4667                 return;
4668         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
4669         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4670                 lpfc_cleanup_vports_rrqs(vport, ndlp);
4671                 lpfc_unreg_rpi(vport, ndlp);
4672         }
4673
4674         lpfc_nlp_put(ndlp);
4675         return;
4676 }
4677
4678 /*
4679  * Start / ReStart rescue timer for Discovery / RSCN handling
4680  */
4681 void
4682 lpfc_set_disctmo(struct lpfc_vport *vport)
4683 {
4684         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4685         struct lpfc_hba  *phba = vport->phba;
4686         uint32_t tmo;
4687
4688         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
4689                 /* For FAN, timeout should be greater than edtov */
4690                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
4691         } else {
4692                 /* Normal discovery timeout should be > than ELS/CT timeout
4693                  * FC spec states we need 3 * ratov for CT requests
4694                  */
4695                 tmo = ((phba->fc_ratov * 3) + 3);
4696         }
4697
4698
4699         if (!timer_pending(&vport->fc_disctmo)) {
4700                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4701                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
4702                         tmo, vport->port_state, vport->fc_flag);
4703         }
4704
4705         mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo));
4706         spin_lock_irq(shost->host_lock);
4707         vport->fc_flag |= FC_DISC_TMO;
4708         spin_unlock_irq(shost->host_lock);
4709
4710         /* Start Discovery Timer state <hba_state> */
4711         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4712                          "0247 Start Discovery Timer state x%x "
4713                          "Data: x%x x%lx x%x x%x\n",
4714                          vport->port_state, tmo,
4715                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
4716                          vport->fc_adisc_cnt);
4717
4718         return;
4719 }
4720
4721 /*
4722  * Cancel rescue timer for Discovery / RSCN handling
4723  */
4724 int
4725 lpfc_can_disctmo(struct lpfc_vport *vport)
4726 {
4727         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4728         unsigned long iflags;
4729
4730         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4731                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
4732                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
4733
4734         /* Turn off discovery timer if its running */
4735         if (vport->fc_flag & FC_DISC_TMO) {
4736                 spin_lock_irqsave(shost->host_lock, iflags);
4737                 vport->fc_flag &= ~FC_DISC_TMO;
4738                 spin_unlock_irqrestore(shost->host_lock, iflags);
4739                 del_timer_sync(&vport->fc_disctmo);
4740                 spin_lock_irqsave(&vport->work_port_lock, iflags);
4741                 vport->work_port_events &= ~WORKER_DISC_TMO;
4742                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
4743         }
4744
4745         /* Cancel Discovery Timer state <hba_state> */
4746         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4747                          "0248 Cancel Discovery Timer state x%x "
4748                          "Data: x%x x%x x%x\n",
4749                          vport->port_state, vport->fc_flag,
4750                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
4751         return 0;
4752 }
4753
4754 /*
4755  * Check specified ring for outstanding IOCB on the SLI queue
4756  * Return true if iocb matches the specified nport
4757  */
4758 int
4759 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
4760                     struct lpfc_sli_ring *pring,
4761                     struct lpfc_iocbq *iocb,
4762                     struct lpfc_nodelist *ndlp)
4763 {
4764         IOCB_t *icmd = &iocb->iocb;
4765         struct lpfc_vport    *vport = ndlp->vport;
4766
4767         if (iocb->vport != vport)
4768                 return 0;
4769
4770         if (pring->ringno == LPFC_ELS_RING) {
4771                 switch (icmd->ulpCommand) {
4772                 case CMD_GEN_REQUEST64_CR:
4773                         if (iocb->context_un.ndlp == ndlp)
4774                                 return 1;
4775                         fallthrough;
4776                 case CMD_ELS_REQUEST64_CR:
4777                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
4778                                 return 1;
4779                         fallthrough;
4780                 case CMD_XMIT_ELS_RSP64_CX:
4781                         if (iocb->context1 == (uint8_t *) ndlp)
4782                                 return 1;
4783                 }
4784         } else if (pring->ringno == LPFC_FCP_RING) {
4785                 /* Skip match check if waiting to relogin to FCP target */
4786                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
4787                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
4788                         return 0;
4789                 }
4790                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
4791                         return 1;
4792                 }
4793         }
4794         return 0;
4795 }
4796
4797 static void
4798 __lpfc_dequeue_nport_iocbs(struct lpfc_hba *phba,
4799                 struct lpfc_nodelist *ndlp, struct lpfc_sli_ring *pring,
4800                 struct list_head *dequeue_list)
4801 {
4802         struct lpfc_iocbq *iocb, *next_iocb;
4803
4804         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
4805                 /* Check to see if iocb matches the nport */
4806                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
4807                         /* match, dequeue */
4808                         list_move_tail(&iocb->list, dequeue_list);
4809         }
4810 }
4811
4812 static void
4813 lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba *phba,
4814                 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
4815 {
4816         struct lpfc_sli *psli = &phba->sli;
4817         uint32_t i;
4818
4819         spin_lock_irq(&phba->hbalock);
4820         for (i = 0; i < psli->num_rings; i++)
4821                 __lpfc_dequeue_nport_iocbs(phba, ndlp, &psli->sli3_ring[i],
4822                                                 dequeue_list);
4823         spin_unlock_irq(&phba->hbalock);
4824 }
4825
4826 static void
4827 lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba *phba,
4828                 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
4829 {
4830         struct lpfc_sli_ring *pring;
4831         struct lpfc_queue *qp = NULL;
4832
4833         spin_lock_irq(&phba->hbalock);
4834         list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
4835                 pring = qp->pring;
4836                 if (!pring)
4837                         continue;
4838                 spin_lock(&pring->ring_lock);
4839                 __lpfc_dequeue_nport_iocbs(phba, ndlp, pring, dequeue_list);
4840                 spin_unlock(&pring->ring_lock);
4841         }
4842         spin_unlock_irq(&phba->hbalock);
4843 }
4844
4845 /*
4846  * Free resources / clean up outstanding I/Os
4847  * associated with nlp_rpi in the LPFC_NODELIST entry.
4848  */
4849 static int
4850 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
4851 {
4852         LIST_HEAD(completions);
4853
4854         lpfc_fabric_abort_nport(ndlp);
4855
4856         /*
4857          * Everything that matches on txcmplq will be returned
4858          * by firmware with a no rpi error.
4859          */
4860         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
4861                 if (phba->sli_rev != LPFC_SLI_REV4)
4862                         lpfc_sli3_dequeue_nport_iocbs(phba, ndlp, &completions);
4863                 else
4864                         lpfc_sli4_dequeue_nport_iocbs(phba, ndlp, &completions);
4865         }
4866
4867         /* Cancel all the IOCBs from the completions list */
4868         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
4869                               IOERR_SLI_ABORTED);
4870
4871         return 0;
4872 }
4873
4874 /**
4875  * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO
4876  * @phba: Pointer to HBA context object.
4877  * @pmb: Pointer to mailbox object.
4878  *
4879  * This function will issue an ELS LOGO command after completing
4880  * the UNREG_RPI.
4881  **/
4882 static void
4883 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4884 {
4885         struct lpfc_vport  *vport = pmb->vport;
4886         struct lpfc_nodelist *ndlp;
4887
4888         ndlp = (struct lpfc_nodelist *)(pmb->ctx_ndlp);
4889         if (!ndlp)
4890                 return;
4891         lpfc_issue_els_logo(vport, ndlp, 0);
4892         mempool_free(pmb, phba->mbox_mem_pool);
4893
4894         /* Check to see if there are any deferred events to process */
4895         if ((ndlp->nlp_flag & NLP_UNREG_INP) &&
4896             (ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING)) {
4897                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4898                                  "1434 UNREG cmpl deferred logo x%x "
4899                                  "on NPort x%x Data: x%x x%px\n",
4900                                  ndlp->nlp_rpi, ndlp->nlp_DID,
4901                                  ndlp->nlp_defer_did, ndlp);
4902
4903                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
4904                 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
4905                 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
4906         } else {
4907                 if (ndlp->nlp_flag & NLP_RELEASE_RPI) {
4908                         lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi);
4909                         ndlp->nlp_flag &= ~NLP_RELEASE_RPI;
4910                         ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
4911                 }
4912                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
4913         }
4914 }
4915
4916 /*
4917  * Sets the mailbox completion handler to be used for the
4918  * unreg_rpi command. The handler varies based on the state of
4919  * the port and what will be happening to the rpi next.
4920  */
4921 static void
4922 lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba *phba, struct lpfc_vport *vport,
4923         struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox)
4924 {
4925         unsigned long iflags;
4926
4927         if (ndlp->nlp_flag & NLP_ISSUE_LOGO) {
4928                 mbox->ctx_ndlp = ndlp;
4929                 mbox->mbox_cmpl = lpfc_nlp_logo_unreg;
4930
4931         } else if (phba->sli_rev == LPFC_SLI_REV4 &&
4932                    (!(vport->load_flag & FC_UNLOADING)) &&
4933                     (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
4934                                       LPFC_SLI_INTF_IF_TYPE_2) &&
4935                     (kref_read(&ndlp->kref) > 0)) {
4936                 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
4937                 mbox->mbox_cmpl = lpfc_sli4_unreg_rpi_cmpl_clr;
4938         } else {
4939                 if (vport->load_flag & FC_UNLOADING) {
4940                         if (phba->sli_rev == LPFC_SLI_REV4) {
4941                                 spin_lock_irqsave(&vport->phba->ndlp_lock,
4942                                                   iflags);
4943                                 ndlp->nlp_flag |= NLP_RELEASE_RPI;
4944                                 spin_unlock_irqrestore(&vport->phba->ndlp_lock,
4945                                                        iflags);
4946                         }
4947                         lpfc_nlp_get(ndlp);
4948                 }
4949                 mbox->ctx_ndlp = ndlp;
4950                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4951         }
4952 }
4953
4954 /*
4955  * Free rpi associated with LPFC_NODELIST entry.
4956  * This routine is called from lpfc_freenode(), when we are removing
4957  * a LPFC_NODELIST entry. It is also called if the driver initiates a
4958  * LOGO that completes successfully, and we are waiting to PLOGI back
4959  * to the remote NPort. In addition, it is called after we receive
4960  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
4961  * we are waiting to PLOGI back to the remote NPort.
4962  */
4963 int
4964 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4965 {
4966         struct lpfc_hba *phba = vport->phba;
4967         LPFC_MBOXQ_t    *mbox;
4968         int rc, acc_plogi = 1;
4969         uint16_t rpi;
4970
4971         if (ndlp->nlp_flag & NLP_RPI_REGISTERED ||
4972             ndlp->nlp_flag & NLP_REG_LOGIN_SEND) {
4973                 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
4974                         lpfc_printf_vlog(vport, KERN_INFO,
4975                                          LOG_NODE | LOG_DISCOVERY,
4976                                          "3366 RPI x%x needs to be "
4977                                          "unregistered nlp_flag x%x "
4978                                          "did x%x\n",
4979                                          ndlp->nlp_rpi, ndlp->nlp_flag,
4980                                          ndlp->nlp_DID);
4981
4982                 /* If there is already an UNREG in progress for this ndlp,
4983                  * no need to queue up another one.
4984                  */
4985                 if (ndlp->nlp_flag & NLP_UNREG_INP) {
4986                         lpfc_printf_vlog(vport, KERN_INFO,
4987                                          LOG_NODE | LOG_DISCOVERY,
4988                                          "1436 unreg_rpi SKIP UNREG x%x on "
4989                                          "NPort x%x deferred x%x  flg x%x "
4990                                          "Data: x%px\n",
4991                                          ndlp->nlp_rpi, ndlp->nlp_DID,
4992                                          ndlp->nlp_defer_did,
4993                                          ndlp->nlp_flag, ndlp);
4994                         goto out;
4995                 }
4996
4997                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4998                 if (mbox) {
4999                         /* SLI4 ports require the physical rpi value. */
5000                         rpi = ndlp->nlp_rpi;
5001                         if (phba->sli_rev == LPFC_SLI_REV4)
5002                                 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
5003
5004                         lpfc_unreg_login(phba, vport->vpi, rpi, mbox);
5005                         mbox->vport = vport;
5006                         lpfc_set_unreg_login_mbx_cmpl(phba, vport, ndlp, mbox);
5007                         if (mbox->mbox_cmpl == lpfc_sli4_unreg_rpi_cmpl_clr)
5008                                 /*
5009                                  * accept PLOGIs after unreg_rpi_cmpl
5010                                  */
5011                                 acc_plogi = 0;
5012                         if (((ndlp->nlp_DID & Fabric_DID_MASK) !=
5013                             Fabric_DID_MASK) &&
5014                             (!(vport->fc_flag & FC_OFFLINE_MODE)))
5015                                 ndlp->nlp_flag |= NLP_UNREG_INP;
5016
5017                         lpfc_printf_vlog(vport, KERN_INFO,
5018                                          LOG_NODE | LOG_DISCOVERY,
5019                                          "1433 unreg_rpi UNREG x%x on "
5020                                          "NPort x%x deferred flg x%x "
5021                                          "Data:x%px\n",
5022                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5023                                          ndlp->nlp_flag, ndlp);
5024
5025                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5026                         if (rc == MBX_NOT_FINISHED) {
5027                                 mempool_free(mbox, phba->mbox_mem_pool);
5028                                 acc_plogi = 1;
5029                         }
5030                 } else {
5031                         lpfc_printf_vlog(vport, KERN_INFO,
5032                                          LOG_NODE | LOG_DISCOVERY,
5033                                          "1444 Failed to allocate mempool "
5034                                          "unreg_rpi UNREG x%x, "
5035                                          "DID x%x, flag x%x, "
5036                                          "ndlp x%px\n",
5037                                          ndlp->nlp_rpi, ndlp->nlp_DID,
5038                                          ndlp->nlp_flag, ndlp);
5039
5040                         /* Because mempool_alloc failed, we
5041                          * will issue a LOGO here and keep the rpi alive if
5042                          * not unloading.
5043                          */
5044                         if (!(vport->load_flag & FC_UNLOADING)) {
5045                                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
5046                                 lpfc_issue_els_logo(vport, ndlp, 0);
5047                                 ndlp->nlp_prev_state = ndlp->nlp_state;
5048                                 lpfc_nlp_set_state(vport, ndlp,
5049                                                    NLP_STE_NPR_NODE);
5050                         }
5051
5052                         return 1;
5053                 }
5054                 lpfc_no_rpi(phba, ndlp);
5055 out:
5056                 if (phba->sli_rev != LPFC_SLI_REV4)
5057                         ndlp->nlp_rpi = 0;
5058                 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
5059                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
5060                 if (acc_plogi)
5061                         ndlp->nlp_flag &= ~NLP_LOGO_ACC;
5062                 return 1;
5063         }
5064         ndlp->nlp_flag &= ~NLP_LOGO_ACC;
5065         return 0;
5066 }
5067
5068 /**
5069  * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
5070  * @phba: pointer to lpfc hba data structure.
5071  *
5072  * This routine is invoked to unregister all the currently registered RPIs
5073  * to the HBA.
5074  **/
5075 void
5076 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
5077 {
5078         struct lpfc_vport **vports;
5079         struct lpfc_nodelist *ndlp;
5080         struct Scsi_Host *shost;
5081         int i;
5082
5083         vports = lpfc_create_vport_work_array(phba);
5084         if (!vports) {
5085                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5086                                 "2884 Vport array allocation failed \n");
5087                 return;
5088         }
5089         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5090                 shost = lpfc_shost_from_vport(vports[i]);
5091                 spin_lock_irq(shost->host_lock);
5092                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
5093                         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
5094                                 /* The mempool_alloc might sleep */
5095                                 spin_unlock_irq(shost->host_lock);
5096                                 lpfc_unreg_rpi(vports[i], ndlp);
5097                                 spin_lock_irq(shost->host_lock);
5098                         }
5099                 }
5100                 spin_unlock_irq(shost->host_lock);
5101         }
5102         lpfc_destroy_vport_work_array(phba, vports);
5103 }
5104
5105 void
5106 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
5107 {
5108         struct lpfc_hba  *phba  = vport->phba;
5109         LPFC_MBOXQ_t     *mbox;
5110         int rc;
5111
5112         if (phba->sli_rev == LPFC_SLI_REV4) {
5113                 lpfc_sli4_unreg_all_rpis(vport);
5114                 return;
5115         }
5116
5117         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5118         if (mbox) {
5119                 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT,
5120                                  mbox);
5121                 mbox->vport = vport;
5122                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5123                 mbox->ctx_ndlp = NULL;
5124                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5125                 if (rc != MBX_TIMEOUT)
5126                         mempool_free(mbox, phba->mbox_mem_pool);
5127
5128                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5129                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5130                                          "1836 Could not issue "
5131                                          "unreg_login(all_rpis) status %d\n",
5132                                          rc);
5133         }
5134 }
5135
5136 void
5137 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
5138 {
5139         struct lpfc_hba  *phba  = vport->phba;
5140         LPFC_MBOXQ_t     *mbox;
5141         int rc;
5142
5143         /* Unreg DID is an SLI3 operation. */
5144         if (phba->sli_rev > LPFC_SLI_REV3)
5145                 return;
5146
5147         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5148         if (mbox) {
5149                 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS,
5150                                mbox);
5151                 mbox->vport = vport;
5152                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5153                 mbox->ctx_ndlp = NULL;
5154                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5155                 if (rc != MBX_TIMEOUT)
5156                         mempool_free(mbox, phba->mbox_mem_pool);
5157
5158                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5159                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5160                                          "1815 Could not issue "
5161                                          "unreg_did (default rpis) status %d\n",
5162                                          rc);
5163         }
5164 }
5165
5166 /*
5167  * Free resources associated with LPFC_NODELIST entry
5168  * so it can be freed.
5169  */
5170 static int
5171 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5172 {
5173         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5174         struct lpfc_hba  *phba = vport->phba;
5175         LPFC_MBOXQ_t *mb, *nextmb;
5176         struct lpfc_dmabuf *mp;
5177         unsigned long iflags;
5178
5179         /* Cleanup node for NPort <nlp_DID> */
5180         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5181                          "0900 Cleanup node for NPort x%x "
5182                          "Data: x%x x%x x%x\n",
5183                          ndlp->nlp_DID, ndlp->nlp_flag,
5184                          ndlp->nlp_state, ndlp->nlp_rpi);
5185         if (NLP_CHK_FREE_REQ(ndlp)) {
5186                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
5187                                 "0280 %s: ndlp:x%px "
5188                                 "usgmap:x%x refcnt:%d\n",
5189                                 __func__, (void *)ndlp, ndlp->nlp_usg_map,
5190                                 kref_read(&ndlp->kref));
5191                 lpfc_dequeue_node(vport, ndlp);
5192         } else {
5193                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
5194                                 "0281 %s: ndlp:x%px "
5195                                 "usgmap:x%x refcnt:%d\n",
5196                                 __func__, (void *)ndlp, ndlp->nlp_usg_map,
5197                                 kref_read(&ndlp->kref));
5198                 lpfc_disable_node(vport, ndlp);
5199         }
5200
5201
5202         /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */
5203
5204         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
5205         if ((mb = phba->sli.mbox_active)) {
5206                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5207                    !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5208                    (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
5209                         mb->ctx_ndlp = NULL;
5210                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5211                 }
5212         }
5213
5214         spin_lock_irq(&phba->hbalock);
5215         /* Cleanup REG_LOGIN completions which are not yet processed */
5216         list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
5217                 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) ||
5218                         (mb->mbox_flag & LPFC_MBX_IMED_UNREG) ||
5219                         (ndlp != (struct lpfc_nodelist *)mb->ctx_ndlp))
5220                         continue;
5221
5222                 mb->ctx_ndlp = NULL;
5223                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5224         }
5225
5226         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
5227                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5228                    !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5229                     (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
5230                         mp = (struct lpfc_dmabuf *)(mb->ctx_buf);
5231                         if (mp) {
5232                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
5233                                 kfree(mp);
5234                         }
5235                         list_del(&mb->list);
5236                         mempool_free(mb, phba->mbox_mem_pool);
5237                         /* We shall not invoke the lpfc_nlp_put to decrement
5238                          * the ndlp reference count as we are in the process
5239                          * of lpfc_nlp_release.
5240                          */
5241                 }
5242         }
5243         spin_unlock_irq(&phba->hbalock);
5244
5245         lpfc_els_abort(phba, ndlp);
5246
5247         spin_lock_irq(shost->host_lock);
5248         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
5249         spin_unlock_irq(shost->host_lock);
5250
5251         ndlp->nlp_last_elscmd = 0;
5252         del_timer_sync(&ndlp->nlp_delayfunc);
5253
5254         list_del_init(&ndlp->els_retry_evt.evt_listp);
5255         list_del_init(&ndlp->dev_loss_evt.evt_listp);
5256         list_del_init(&ndlp->recovery_evt.evt_listp);
5257         lpfc_cleanup_vports_rrqs(vport, ndlp);
5258         if (phba->sli_rev == LPFC_SLI_REV4)
5259                 ndlp->nlp_flag |= NLP_RELEASE_RPI;
5260         if (!lpfc_unreg_rpi(vport, ndlp)) {
5261                 /* Clean up unregistered and non freed rpis */
5262                 if ((ndlp->nlp_flag & NLP_RELEASE_RPI) &&
5263                     !(ndlp->nlp_rpi == LPFC_RPI_ALLOC_ERROR)) {
5264                         lpfc_sli4_free_rpi(vport->phba,
5265                                            ndlp->nlp_rpi);
5266                         spin_lock_irqsave(&vport->phba->ndlp_lock,
5267                                           iflags);
5268                         ndlp->nlp_flag &= ~NLP_RELEASE_RPI;
5269                         ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
5270                         spin_unlock_irqrestore(&vport->phba->ndlp_lock,
5271                                                iflags);
5272                 }
5273         }
5274         return 0;
5275 }
5276
5277 /*
5278  * Check to see if we can free the nlp back to the freelist.
5279  * If we are in the middle of using the nlp in the discovery state
5280  * machine, defer the free till we reach the end of the state machine.
5281  */
5282 static void
5283 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5284 {
5285         struct lpfc_hba  *phba = vport->phba;
5286         struct lpfc_rport_data *rdata;
5287         struct fc_rport *rport;
5288         LPFC_MBOXQ_t *mbox;
5289         int rc;
5290
5291         lpfc_cancel_retry_delay_tmo(vport, ndlp);
5292         if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
5293             !(ndlp->nlp_flag & NLP_REG_LOGIN_SEND) &&
5294             !(ndlp->nlp_flag & NLP_RPI_REGISTERED) &&
5295             phba->sli_rev != LPFC_SLI_REV4) {
5296                 /* For this case we need to cleanup the default rpi
5297                  * allocated by the firmware.
5298                  */
5299                 lpfc_printf_vlog(vport, KERN_INFO,
5300                                  LOG_NODE | LOG_DISCOVERY,
5301                                  "0005 Cleanup Default rpi:x%x DID:x%x flg:x%x "
5302                                  "ref %d map:x%x ndlp x%px\n",
5303                                  ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
5304                                  kref_read(&ndlp->kref),
5305                                  ndlp->nlp_usg_map, ndlp);
5306                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
5307                         != NULL) {
5308                         rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID,
5309                             (uint8_t *) &vport->fc_sparam, mbox, ndlp->nlp_rpi);
5310                         if (rc) {
5311                                 mempool_free(mbox, phba->mbox_mem_pool);
5312                         }
5313                         else {
5314                                 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
5315                                 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
5316                                 mbox->vport = vport;
5317                                 mbox->ctx_ndlp = ndlp;
5318                                 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5319                                 if (rc == MBX_NOT_FINISHED) {
5320                                         mempool_free(mbox, phba->mbox_mem_pool);
5321                                 }
5322                         }
5323                 }
5324         }
5325         lpfc_cleanup_node(vport, ndlp);
5326
5327         /*
5328          * ndlp->rport must be set to NULL before it reaches here
5329          * i.e. break rport/node link before doing lpfc_nlp_put for
5330          * registered rport and then drop the reference of rport.
5331          */
5332         if (ndlp->rport) {
5333                 /*
5334                  * extra lpfc_nlp_put dropped the reference of ndlp
5335                  * for registered rport so need to cleanup rport
5336                  */
5337                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
5338                                 "0940 removed node x%px DID x%x "
5339                                 "rpi %d rport not null x%px\n",
5340                                  ndlp, ndlp->nlp_DID, ndlp->nlp_rpi,
5341                                  ndlp->rport);
5342                 rport = ndlp->rport;
5343                 rdata = rport->dd_data;
5344                 rdata->pnode = NULL;
5345                 ndlp->rport = NULL;
5346                 put_device(&rport->dev);
5347         }
5348 }
5349
5350 static int
5351 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
5352               uint32_t did)
5353 {
5354         D_ID mydid, ndlpdid, matchdid;
5355
5356         if (did == Bcast_DID)
5357                 return 0;
5358
5359         /* First check for Direct match */
5360         if (ndlp->nlp_DID == did)
5361                 return 1;
5362
5363         /* Next check for area/domain identically equals 0 match */
5364         mydid.un.word = vport->fc_myDID;
5365         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
5366                 return 0;
5367         }
5368
5369         matchdid.un.word = did;
5370         ndlpdid.un.word = ndlp->nlp_DID;
5371         if (matchdid.un.b.id == ndlpdid.un.b.id) {
5372                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
5373                     (mydid.un.b.area == matchdid.un.b.area)) {
5374                         /* This code is supposed to match the ID
5375                          * for a private loop device that is
5376                          * connect to fl_port. But we need to
5377                          * check that the port did not just go
5378                          * from pt2pt to fabric or we could end
5379                          * up matching ndlp->nlp_DID 000001 to
5380                          * fabric DID 0x20101
5381                          */
5382                         if ((ndlpdid.un.b.domain == 0) &&
5383                             (ndlpdid.un.b.area == 0)) {
5384                                 if (ndlpdid.un.b.id &&
5385                                     vport->phba->fc_topology ==
5386                                     LPFC_TOPOLOGY_LOOP)
5387                                         return 1;
5388                         }
5389                         return 0;
5390                 }
5391
5392                 matchdid.un.word = ndlp->nlp_DID;
5393                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
5394                     (mydid.un.b.area == ndlpdid.un.b.area)) {
5395                         if ((matchdid.un.b.domain == 0) &&
5396                             (matchdid.un.b.area == 0)) {
5397                                 if (matchdid.un.b.id)
5398                                         return 1;
5399                         }
5400                 }
5401         }
5402         return 0;
5403 }
5404
5405 /* Search for a nodelist entry */
5406 static struct lpfc_nodelist *
5407 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5408 {
5409         struct lpfc_nodelist *ndlp;
5410         uint32_t data1;
5411
5412         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5413                 if (lpfc_matchdid(vport, ndlp, did)) {
5414                         data1 = (((uint32_t)ndlp->nlp_state << 24) |
5415                                  ((uint32_t)ndlp->nlp_xri << 16) |
5416                                  ((uint32_t)ndlp->nlp_type << 8) |
5417                                  ((uint32_t)ndlp->nlp_usg_map & 0xff));
5418                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5419                                          "0929 FIND node DID "
5420                                          "Data: x%px x%x x%x x%x x%x x%px\n",
5421                                          ndlp, ndlp->nlp_DID,
5422                                          ndlp->nlp_flag, data1, ndlp->nlp_rpi,
5423                                          ndlp->active_rrqs_xri_bitmap);
5424                         return ndlp;
5425                 }
5426         }
5427
5428         /* FIND node did <did> NOT FOUND */
5429         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5430                          "0932 FIND node did x%x NOT FOUND.\n", did);
5431         return NULL;
5432 }
5433
5434 struct lpfc_nodelist *
5435 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5436 {
5437         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5438         struct lpfc_nodelist *ndlp;
5439         unsigned long iflags;
5440
5441         spin_lock_irqsave(shost->host_lock, iflags);
5442         ndlp = __lpfc_findnode_did(vport, did);
5443         spin_unlock_irqrestore(shost->host_lock, iflags);
5444         return ndlp;
5445 }
5446
5447 struct lpfc_nodelist *
5448 lpfc_findnode_mapped(struct lpfc_vport *vport)
5449 {
5450         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5451         struct lpfc_nodelist *ndlp;
5452         uint32_t data1;
5453         unsigned long iflags;
5454
5455         spin_lock_irqsave(shost->host_lock, iflags);
5456
5457         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5458                 if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE ||
5459                     ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
5460                         data1 = (((uint32_t)ndlp->nlp_state << 24) |
5461                                  ((uint32_t)ndlp->nlp_xri << 16) |
5462                                  ((uint32_t)ndlp->nlp_type << 8) |
5463                                  ((uint32_t)ndlp->nlp_rpi & 0xff));
5464                         spin_unlock_irqrestore(shost->host_lock, iflags);
5465                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5466                                          "2025 FIND node DID "
5467                                          "Data: x%px x%x x%x x%x x%px\n",
5468                                          ndlp, ndlp->nlp_DID,
5469                                          ndlp->nlp_flag, data1,
5470                                          ndlp->active_rrqs_xri_bitmap);
5471                         return ndlp;
5472                 }
5473         }
5474         spin_unlock_irqrestore(shost->host_lock, iflags);
5475
5476         /* FIND node did <did> NOT FOUND */
5477         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5478                          "2026 FIND mapped did NOT FOUND.\n");
5479         return NULL;
5480 }
5481
5482 struct lpfc_nodelist *
5483 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
5484 {
5485         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5486         struct lpfc_nodelist *ndlp;
5487
5488         ndlp = lpfc_findnode_did(vport, did);
5489         if (!ndlp) {
5490                 if (vport->phba->nvmet_support)
5491                         return NULL;
5492                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
5493                     lpfc_rscn_payload_check(vport, did) == 0)
5494                         return NULL;
5495                 ndlp = lpfc_nlp_init(vport, did);
5496                 if (!ndlp)
5497                         return NULL;
5498                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5499
5500                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5501                                  "6453 Setup New Node 2B_DISC x%x "
5502                                  "Data:x%x x%x x%x\n",
5503                                  ndlp->nlp_DID, ndlp->nlp_flag,
5504                                  ndlp->nlp_state, vport->fc_flag);
5505
5506                 spin_lock_irq(shost->host_lock);
5507                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5508                 spin_unlock_irq(shost->host_lock);
5509                 return ndlp;
5510         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
5511                 if (vport->phba->nvmet_support)
5512                         return NULL;
5513                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
5514                 if (!ndlp) {
5515                         lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI,
5516                                          "0014 Could not enable ndlp\n");
5517                         return NULL;
5518                 }
5519                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5520                                  "6454 Setup Enabled Node 2B_DISC x%x "
5521                                  "Data:x%x x%x x%x\n",
5522                                  ndlp->nlp_DID, ndlp->nlp_flag,
5523                                  ndlp->nlp_state, vport->fc_flag);
5524
5525                 spin_lock_irq(shost->host_lock);
5526                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5527                 spin_unlock_irq(shost->host_lock);
5528                 return ndlp;
5529         }
5530
5531         /* The NVME Target does not want to actively manage an rport.
5532          * The goal is to allow the target to reset its state and clear
5533          * pending IO in preparation for the initiator to recover.
5534          */
5535         if ((vport->fc_flag & FC_RSCN_MODE) &&
5536             !(vport->fc_flag & FC_NDISC_ACTIVE)) {
5537                 if (lpfc_rscn_payload_check(vport, did)) {
5538
5539                         /* Since this node is marked for discovery,
5540                          * delay timeout is not needed.
5541                          */
5542                         lpfc_cancel_retry_delay_tmo(vport, ndlp);
5543
5544                         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5545                                          "6455 Setup RSCN Node 2B_DISC x%x "
5546                                          "Data:x%x x%x x%x\n",
5547                                          ndlp->nlp_DID, ndlp->nlp_flag,
5548                                          ndlp->nlp_state, vport->fc_flag);
5549
5550                         /* NVME Target mode waits until rport is known to be
5551                          * impacted by the RSCN before it transitions.  No
5552                          * active management - just go to NPR provided the
5553                          * node had a valid login.
5554                          */
5555                         if (vport->phba->nvmet_support)
5556                                 return ndlp;
5557
5558                         /* If we've already received a PLOGI from this NPort
5559                          * we don't need to try to discover it again.
5560                          */
5561                         if (ndlp->nlp_flag & NLP_RCV_PLOGI &&
5562                             !(ndlp->nlp_type &
5563                              (NLP_FCP_TARGET | NLP_NVME_TARGET)))
5564                                 return NULL;
5565
5566                         ndlp->nlp_prev_state = ndlp->nlp_state;
5567                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5568
5569                         spin_lock_irq(shost->host_lock);
5570                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5571                         spin_unlock_irq(shost->host_lock);
5572                 } else {
5573                         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5574                                          "6456 Skip Setup RSCN Node x%x "
5575                                          "Data:x%x x%x x%x\n",
5576                                          ndlp->nlp_DID, ndlp->nlp_flag,
5577                                          ndlp->nlp_state, vport->fc_flag);
5578                         ndlp = NULL;
5579                 }
5580         } else {
5581                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5582                                  "6457 Setup Active Node 2B_DISC x%x "
5583                                  "Data:x%x x%x x%x\n",
5584                                  ndlp->nlp_DID, ndlp->nlp_flag,
5585                                  ndlp->nlp_state, vport->fc_flag);
5586
5587                 /* If the initiator received a PLOGI from this NPort or if the
5588                  * initiator is already in the process of discovery on it,
5589                  * there's no need to try to discover it again.
5590                  */
5591                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
5592                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5593                     (!vport->phba->nvmet_support &&
5594                      ndlp->nlp_flag & NLP_RCV_PLOGI))
5595                         return NULL;
5596
5597                 if (vport->phba->nvmet_support)
5598                         return ndlp;
5599
5600                 /* Moving to NPR state clears unsolicited flags and
5601                  * allows for rediscovery
5602                  */
5603                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5604
5605                 spin_lock_irq(shost->host_lock);
5606                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5607                 spin_unlock_irq(shost->host_lock);
5608         }
5609         return ndlp;
5610 }
5611
5612 /* Build a list of nodes to discover based on the loopmap */
5613 void
5614 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
5615 {
5616         struct lpfc_hba  *phba = vport->phba;
5617         int j;
5618         uint32_t alpa, index;
5619
5620         if (!lpfc_is_link_up(phba))
5621                 return;
5622
5623         if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
5624                 return;
5625
5626         /* Check for loop map present or not */
5627         if (phba->alpa_map[0]) {
5628                 for (j = 1; j <= phba->alpa_map[0]; j++) {
5629                         alpa = phba->alpa_map[j];
5630                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
5631                                 continue;
5632                         lpfc_setup_disc_node(vport, alpa);
5633                 }
5634         } else {
5635                 /* No alpamap, so try all alpa's */
5636                 for (j = 0; j < FC_MAXLOOP; j++) {
5637                         /* If cfg_scan_down is set, start from highest
5638                          * ALPA (0xef) to lowest (0x1).
5639                          */
5640                         if (vport->cfg_scan_down)
5641                                 index = j;
5642                         else
5643                                 index = FC_MAXLOOP - j - 1;
5644                         alpa = lpfcAlpaArray[index];
5645                         if ((vport->fc_myDID & 0xff) == alpa)
5646                                 continue;
5647                         lpfc_setup_disc_node(vport, alpa);
5648                 }
5649         }
5650         return;
5651 }
5652
5653 /* SLI3 only */
5654 void
5655 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
5656 {
5657         LPFC_MBOXQ_t *mbox;
5658         struct lpfc_sli *psli = &phba->sli;
5659         struct lpfc_sli_ring *extra_ring = &psli->sli3_ring[LPFC_EXTRA_RING];
5660         struct lpfc_sli_ring *fcp_ring   = &psli->sli3_ring[LPFC_FCP_RING];
5661         int  rc;
5662
5663         /*
5664          * if it's not a physical port or if we already send
5665          * clear_la then don't send it.
5666          */
5667         if ((phba->link_state >= LPFC_CLEAR_LA) ||
5668             (vport->port_type != LPFC_PHYSICAL_PORT) ||
5669                 (phba->sli_rev == LPFC_SLI_REV4))
5670                 return;
5671
5672                         /* Link up discovery */
5673         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
5674                 phba->link_state = LPFC_CLEAR_LA;
5675                 lpfc_clear_la(phba, mbox);
5676                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
5677                 mbox->vport = vport;
5678                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5679                 if (rc == MBX_NOT_FINISHED) {
5680                         mempool_free(mbox, phba->mbox_mem_pool);
5681                         lpfc_disc_flush_list(vport);
5682                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5683                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5684                         phba->link_state = LPFC_HBA_ERROR;
5685                 }
5686         }
5687 }
5688
5689 /* Reg_vpi to tell firmware to resume normal operations */
5690 void
5691 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
5692 {
5693         LPFC_MBOXQ_t *regvpimbox;
5694
5695         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5696         if (regvpimbox) {
5697                 lpfc_reg_vpi(vport, regvpimbox);
5698                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
5699                 regvpimbox->vport = vport;
5700                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
5701                                         == MBX_NOT_FINISHED) {
5702                         mempool_free(regvpimbox, phba->mbox_mem_pool);
5703                 }
5704         }
5705 }
5706
5707 /* Start Link up / RSCN discovery on NPR nodes */
5708 void
5709 lpfc_disc_start(struct lpfc_vport *vport)
5710 {
5711         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5712         struct lpfc_hba  *phba = vport->phba;
5713         uint32_t num_sent;
5714         uint32_t clear_la_pending;
5715
5716         if (!lpfc_is_link_up(phba)) {
5717                 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
5718                                  "3315 Link is not up %x\n",
5719                                  phba->link_state);
5720                 return;
5721         }
5722
5723         if (phba->link_state == LPFC_CLEAR_LA)
5724                 clear_la_pending = 1;
5725         else
5726                 clear_la_pending = 0;
5727
5728         if (vport->port_state < LPFC_VPORT_READY)
5729                 vport->port_state = LPFC_DISC_AUTH;
5730
5731         lpfc_set_disctmo(vport);
5732
5733         vport->fc_prevDID = vport->fc_myDID;
5734         vport->num_disc_nodes = 0;
5735
5736         /* Start Discovery state <hba_state> */
5737         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5738                          "0202 Start Discovery port state x%x "
5739                          "flg x%x Data: x%x x%x x%x\n",
5740                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
5741                          vport->fc_adisc_cnt, vport->fc_npr_cnt);
5742
5743         /* First do ADISCs - if any */
5744         num_sent = lpfc_els_disc_adisc(vport);
5745
5746         if (num_sent)
5747                 return;
5748
5749         /* Register the VPI for SLI3, NPIV only. */
5750         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
5751             !(vport->fc_flag & FC_PT2PT) &&
5752             !(vport->fc_flag & FC_RSCN_MODE) &&
5753             (phba->sli_rev < LPFC_SLI_REV4)) {
5754                 lpfc_issue_clear_la(phba, vport);
5755                 lpfc_issue_reg_vpi(phba, vport);
5756                 return;
5757         }
5758
5759         /*
5760          * For SLI2, we need to set port_state to READY and continue
5761          * discovery.
5762          */
5763         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
5764                 /* If we get here, there is nothing to ADISC */
5765                 lpfc_issue_clear_la(phba, vport);
5766
5767                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
5768                         vport->num_disc_nodes = 0;
5769                         /* go thru NPR nodes and issue ELS PLOGIs */
5770                         if (vport->fc_npr_cnt)
5771                                 lpfc_els_disc_plogi(vport);
5772
5773                         if (!vport->num_disc_nodes) {
5774                                 spin_lock_irq(shost->host_lock);
5775                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
5776                                 spin_unlock_irq(shost->host_lock);
5777                                 lpfc_can_disctmo(vport);
5778                         }
5779                 }
5780                 vport->port_state = LPFC_VPORT_READY;
5781         } else {
5782                 /* Next do PLOGIs - if any */
5783                 num_sent = lpfc_els_disc_plogi(vport);
5784
5785                 if (num_sent)
5786                         return;
5787
5788                 if (vport->fc_flag & FC_RSCN_MODE) {
5789                         /* Check to see if more RSCNs came in while we
5790                          * were processing this one.
5791                          */
5792                         if ((vport->fc_rscn_id_cnt == 0) &&
5793                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
5794                                 spin_lock_irq(shost->host_lock);
5795                                 vport->fc_flag &= ~FC_RSCN_MODE;
5796                                 spin_unlock_irq(shost->host_lock);
5797                                 lpfc_can_disctmo(vport);
5798                         } else
5799                                 lpfc_els_handle_rscn(vport);
5800                 }
5801         }
5802         return;
5803 }
5804
5805 /*
5806  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
5807  *  ring the match the sppecified nodelist.
5808  */
5809 static void
5810 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
5811 {
5812         LIST_HEAD(completions);
5813         IOCB_t     *icmd;
5814         struct lpfc_iocbq    *iocb, *next_iocb;
5815         struct lpfc_sli_ring *pring;
5816
5817         pring = lpfc_phba_elsring(phba);
5818         if (unlikely(!pring))
5819                 return;
5820
5821         /* Error matching iocb on txq or txcmplq
5822          * First check the txq.
5823          */
5824         spin_lock_irq(&phba->hbalock);
5825         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
5826                 if (iocb->context1 != ndlp) {
5827                         continue;
5828                 }
5829                 icmd = &iocb->iocb;
5830                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
5831                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
5832
5833                         list_move_tail(&iocb->list, &completions);
5834                 }
5835         }
5836
5837         /* Next check the txcmplq */
5838         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
5839                 if (iocb->context1 != ndlp) {
5840                         continue;
5841                 }
5842                 icmd = &iocb->iocb;
5843                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
5844                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
5845                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
5846                 }
5847         }
5848         spin_unlock_irq(&phba->hbalock);
5849
5850         /* Cancel all the IOCBs from the completions list */
5851         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5852                               IOERR_SLI_ABORTED);
5853 }
5854
5855 static void
5856 lpfc_disc_flush_list(struct lpfc_vport *vport)
5857 {
5858         struct lpfc_nodelist *ndlp, *next_ndlp;
5859         struct lpfc_hba *phba = vport->phba;
5860
5861         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
5862                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
5863                                          nlp_listp) {
5864                         if (!NLP_CHK_NODE_ACT(ndlp))
5865                                 continue;
5866                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5867                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
5868                                 lpfc_free_tx(phba, ndlp);
5869                         }
5870                 }
5871         }
5872 }
5873
5874 void
5875 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
5876 {
5877         lpfc_els_flush_rscn(vport);
5878         lpfc_els_flush_cmd(vport);
5879         lpfc_disc_flush_list(vport);
5880 }
5881
5882 /*****************************************************************************/
5883 /*
5884  * NAME:     lpfc_disc_timeout
5885  *
5886  * FUNCTION: Fibre Channel driver discovery timeout routine.
5887  *
5888  * EXECUTION ENVIRONMENT: interrupt only
5889  *
5890  * CALLED FROM:
5891  *      Timer function
5892  *
5893  * RETURNS:
5894  *      none
5895  */
5896 /*****************************************************************************/
5897 void
5898 lpfc_disc_timeout(struct timer_list *t)
5899 {
5900         struct lpfc_vport *vport = from_timer(vport, t, fc_disctmo);
5901         struct lpfc_hba   *phba = vport->phba;
5902         uint32_t tmo_posted;
5903         unsigned long flags = 0;
5904
5905         if (unlikely(!phba))
5906                 return;
5907
5908         spin_lock_irqsave(&vport->work_port_lock, flags);
5909         tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
5910         if (!tmo_posted)
5911                 vport->work_port_events |= WORKER_DISC_TMO;
5912         spin_unlock_irqrestore(&vport->work_port_lock, flags);
5913
5914         if (!tmo_posted)
5915                 lpfc_worker_wake_up(phba);
5916         return;
5917 }
5918
5919 static void
5920 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
5921 {
5922         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5923         struct lpfc_hba  *phba = vport->phba;
5924         struct lpfc_sli  *psli = &phba->sli;
5925         struct lpfc_nodelist *ndlp, *next_ndlp;
5926         LPFC_MBOXQ_t *initlinkmbox;
5927         int rc, clrlaerr = 0;
5928
5929         if (!(vport->fc_flag & FC_DISC_TMO))
5930                 return;
5931
5932         spin_lock_irq(shost->host_lock);
5933         vport->fc_flag &= ~FC_DISC_TMO;
5934         spin_unlock_irq(shost->host_lock);
5935
5936         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
5937                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
5938                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
5939
5940         switch (vport->port_state) {
5941
5942         case LPFC_LOCAL_CFG_LINK:
5943                 /*
5944                  * port_state is identically  LPFC_LOCAL_CFG_LINK while
5945                  * waiting for FAN timeout
5946                  */
5947                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
5948                                  "0221 FAN timeout\n");
5949
5950                 /* Start discovery by sending FLOGI, clean up old rpis */
5951                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
5952                                          nlp_listp) {
5953                         if (!NLP_CHK_NODE_ACT(ndlp))
5954                                 continue;
5955                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
5956                                 continue;
5957                         if (ndlp->nlp_type & NLP_FABRIC) {
5958                                 /* Clean up the ndlp on Fabric connections */
5959                                 lpfc_drop_node(vport, ndlp);
5960
5961                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
5962                                 /* Fail outstanding IO now since device
5963                                  * is marked for PLOGI.
5964                                  */
5965                                 lpfc_unreg_rpi(vport, ndlp);
5966                         }
5967                 }
5968                 if (vport->port_state != LPFC_FLOGI) {
5969                         if (phba->sli_rev <= LPFC_SLI_REV3)
5970                                 lpfc_initial_flogi(vport);
5971                         else
5972                                 lpfc_issue_init_vfi(vport);
5973                         return;
5974                 }
5975                 break;
5976
5977         case LPFC_FDISC:
5978         case LPFC_FLOGI:
5979         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
5980                 /* Initial FLOGI timeout */
5981                 lpfc_printf_vlog(vport, KERN_ERR,
5982                                  LOG_TRACE_EVENT,
5983                                  "0222 Initial %s timeout\n",
5984                                  vport->vpi ? "FDISC" : "FLOGI");
5985
5986                 /* Assume no Fabric and go on with discovery.
5987                  * Check for outstanding ELS FLOGI to abort.
5988                  */
5989
5990                 /* FLOGI failed, so just use loop map to make discovery list */
5991                 lpfc_disc_list_loopmap(vport);
5992
5993                 /* Start discovery */
5994                 lpfc_disc_start(vport);
5995                 break;
5996
5997         case LPFC_FABRIC_CFG_LINK:
5998         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
5999            NameServer login */
6000                 lpfc_printf_vlog(vport, KERN_ERR,
6001                                  LOG_TRACE_EVENT,
6002                                  "0223 Timeout while waiting for "
6003                                  "NameServer login\n");
6004                 /* Next look for NameServer ndlp */
6005                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
6006                 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
6007                         lpfc_els_abort(phba, ndlp);
6008
6009                 /* ReStart discovery */
6010                 goto restart_disc;
6011
6012         case LPFC_NS_QRY:
6013         /* Check for wait for NameServer Rsp timeout */
6014                 lpfc_printf_vlog(vport, KERN_ERR,
6015                                  LOG_TRACE_EVENT,
6016                                  "0224 NameServer Query timeout "
6017                                  "Data: x%x x%x\n",
6018                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
6019
6020                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
6021                         /* Try it one more time */
6022                         vport->fc_ns_retry++;
6023                         vport->gidft_inp = 0;
6024                         rc = lpfc_issue_gidft(vport);
6025                         if (rc == 0)
6026                                 break;
6027                 }
6028                 vport->fc_ns_retry = 0;
6029
6030 restart_disc:
6031                 /*
6032                  * Discovery is over.
6033                  * set port_state to PORT_READY if SLI2.
6034                  * cmpl_reg_vpi will set port_state to READY for SLI3.
6035                  */
6036                 if (phba->sli_rev < LPFC_SLI_REV4) {
6037                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
6038                                 lpfc_issue_reg_vpi(phba, vport);
6039                         else  {
6040                                 lpfc_issue_clear_la(phba, vport);
6041                                 vport->port_state = LPFC_VPORT_READY;
6042                         }
6043                 }
6044
6045                 /* Setup and issue mailbox INITIALIZE LINK command */
6046                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6047                 if (!initlinkmbox) {
6048                         lpfc_printf_vlog(vport, KERN_ERR,
6049                                          LOG_TRACE_EVENT,
6050                                          "0206 Device Discovery "
6051                                          "completion error\n");
6052                         phba->link_state = LPFC_HBA_ERROR;
6053                         break;
6054                 }
6055
6056                 lpfc_linkdown(phba);
6057                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
6058                                phba->cfg_link_speed);
6059                 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
6060                 initlinkmbox->vport = vport;
6061                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
6062                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
6063                 lpfc_set_loopback_flag(phba);
6064                 if (rc == MBX_NOT_FINISHED)
6065                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
6066
6067                 break;
6068
6069         case LPFC_DISC_AUTH:
6070         /* Node Authentication timeout */
6071                 lpfc_printf_vlog(vport, KERN_ERR,
6072                                  LOG_TRACE_EVENT,
6073                                  "0227 Node Authentication timeout\n");
6074                 lpfc_disc_flush_list(vport);
6075
6076                 /*
6077                  * set port_state to PORT_READY if SLI2.
6078                  * cmpl_reg_vpi will set port_state to READY for SLI3.
6079                  */
6080                 if (phba->sli_rev < LPFC_SLI_REV4) {
6081                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
6082                                 lpfc_issue_reg_vpi(phba, vport);
6083                         else  { /* NPIV Not enabled */
6084                                 lpfc_issue_clear_la(phba, vport);
6085                                 vport->port_state = LPFC_VPORT_READY;
6086                         }
6087                 }
6088                 break;
6089
6090         case LPFC_VPORT_READY:
6091                 if (vport->fc_flag & FC_RSCN_MODE) {
6092                         lpfc_printf_vlog(vport, KERN_ERR,
6093                                          LOG_TRACE_EVENT,
6094                                          "0231 RSCN timeout Data: x%x "
6095                                          "x%x\n",
6096                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
6097
6098                         /* Cleanup any outstanding ELS commands */
6099                         lpfc_els_flush_cmd(vport);
6100
6101                         lpfc_els_flush_rscn(vport);
6102                         lpfc_disc_flush_list(vport);
6103                 }
6104                 break;
6105
6106         default:
6107                 lpfc_printf_vlog(vport, KERN_ERR,
6108                                  LOG_TRACE_EVENT,
6109                                  "0273 Unexpected discovery timeout, "
6110                                  "vport State x%x\n", vport->port_state);
6111                 break;
6112         }
6113
6114         switch (phba->link_state) {
6115         case LPFC_CLEAR_LA:
6116                                 /* CLEAR LA timeout */
6117                 lpfc_printf_vlog(vport, KERN_ERR,
6118                                  LOG_TRACE_EVENT,
6119                                  "0228 CLEAR LA timeout\n");
6120                 clrlaerr = 1;
6121                 break;
6122
6123         case LPFC_LINK_UP:
6124                 lpfc_issue_clear_la(phba, vport);
6125                 fallthrough;
6126         case LPFC_LINK_UNKNOWN:
6127         case LPFC_WARM_START:
6128         case LPFC_INIT_START:
6129         case LPFC_INIT_MBX_CMDS:
6130         case LPFC_LINK_DOWN:
6131         case LPFC_HBA_ERROR:
6132                 lpfc_printf_vlog(vport, KERN_ERR,
6133                                  LOG_TRACE_EVENT,
6134                                  "0230 Unexpected timeout, hba link "
6135                                  "state x%x\n", phba->link_state);
6136                 clrlaerr = 1;
6137                 break;
6138
6139         case LPFC_HBA_READY:
6140                 break;
6141         }
6142
6143         if (clrlaerr) {
6144                 lpfc_disc_flush_list(vport);
6145                 if (phba->sli_rev != LPFC_SLI_REV4) {
6146                         psli->sli3_ring[(LPFC_EXTRA_RING)].flag &=
6147                                 ~LPFC_STOP_IOCB_EVENT;
6148                         psli->sli3_ring[LPFC_FCP_RING].flag &=
6149                                 ~LPFC_STOP_IOCB_EVENT;
6150                 }
6151                 vport->port_state = LPFC_VPORT_READY;
6152         }
6153         return;
6154 }
6155
6156 /*
6157  * This routine handles processing a NameServer REG_LOGIN mailbox
6158  * command upon completion. It is setup in the LPFC_MBOXQ
6159  * as the completion routine when the command is
6160  * handed off to the SLI layer.
6161  */
6162 void
6163 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
6164 {
6165         MAILBOX_t *mb = &pmb->u.mb;
6166         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
6167         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
6168         struct lpfc_vport    *vport = pmb->vport;
6169
6170         pmb->ctx_buf = NULL;
6171         pmb->ctx_ndlp = NULL;
6172
6173         if (phba->sli_rev < LPFC_SLI_REV4)
6174                 ndlp->nlp_rpi = mb->un.varWords[0];
6175         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
6176         ndlp->nlp_type |= NLP_FABRIC;
6177         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
6178         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
6179                          "0004 rpi:%x DID:%x flg:%x %d map:%x x%px\n",
6180                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
6181                          kref_read(&ndlp->kref),
6182                          ndlp->nlp_usg_map, ndlp);
6183         /*
6184          * Start issuing Fabric-Device Management Interface (FDMI) command to
6185          * 0xfffffa (FDMI well known port).
6186          * DHBA -> DPRT -> RHBA -> RPA  (physical port)
6187          * DPRT -> RPRT (vports)
6188          */
6189         if (vport->port_type == LPFC_PHYSICAL_PORT)
6190                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA, 0);
6191         else
6192                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DPRT, 0);
6193
6194
6195         /* decrement the node reference count held for this callback
6196          * function.
6197          */
6198         lpfc_nlp_put(ndlp);
6199         lpfc_mbuf_free(phba, mp->virt, mp->phys);
6200         kfree(mp);
6201         mempool_free(pmb, phba->mbox_mem_pool);
6202
6203         return;
6204 }
6205
6206 static int
6207 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
6208 {
6209         uint16_t *rpi = param;
6210
6211         /* check for active node */
6212         if (!NLP_CHK_NODE_ACT(ndlp))
6213                 return 0;
6214
6215         return ndlp->nlp_rpi == *rpi;
6216 }
6217
6218 static int
6219 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
6220 {
6221         return memcmp(&ndlp->nlp_portname, param,
6222                       sizeof(ndlp->nlp_portname)) == 0;
6223 }
6224
6225 static struct lpfc_nodelist *
6226 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
6227 {
6228         struct lpfc_nodelist *ndlp;
6229
6230         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
6231                 if (filter(ndlp, param)) {
6232                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6233                                          "3185 FIND node filter %ps DID "
6234                                          "ndlp x%px did x%x flg x%x st x%x "
6235                                          "xri x%x type x%x rpi x%x\n",
6236                                          filter, ndlp, ndlp->nlp_DID,
6237                                          ndlp->nlp_flag, ndlp->nlp_state,
6238                                          ndlp->nlp_xri, ndlp->nlp_type,
6239                                          ndlp->nlp_rpi);
6240                         return ndlp;
6241                 }
6242         }
6243         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6244                          "3186 FIND node filter %ps NOT FOUND.\n", filter);
6245         return NULL;
6246 }
6247
6248 /*
6249  * This routine looks up the ndlp lists for the given RPI. If rpi found it
6250  * returns the node list element pointer else return NULL.
6251  */
6252 struct lpfc_nodelist *
6253 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6254 {
6255         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
6256 }
6257
6258 /*
6259  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
6260  * returns the node element list pointer else return NULL.
6261  */
6262 struct lpfc_nodelist *
6263 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
6264 {
6265         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6266         struct lpfc_nodelist *ndlp;
6267
6268         spin_lock_irq(shost->host_lock);
6269         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
6270         spin_unlock_irq(shost->host_lock);
6271         return ndlp;
6272 }
6273
6274 /*
6275  * This routine looks up the ndlp lists for the given RPI. If the rpi
6276  * is found, the routine returns the node element list pointer else
6277  * return NULL.
6278  */
6279 struct lpfc_nodelist *
6280 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6281 {
6282         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6283         struct lpfc_nodelist *ndlp;
6284         unsigned long flags;
6285
6286         spin_lock_irqsave(shost->host_lock, flags);
6287         ndlp = __lpfc_findnode_rpi(vport, rpi);
6288         spin_unlock_irqrestore(shost->host_lock, flags);
6289         return ndlp;
6290 }
6291
6292 /**
6293  * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
6294  * @phba: pointer to lpfc hba data structure.
6295  * @vpi: the physical host virtual N_Port identifier.
6296  *
6297  * This routine finds a vport on a HBA (referred by @phba) through a
6298  * @vpi. The function walks the HBA's vport list and returns the address
6299  * of the vport with the matching @vpi.
6300  *
6301  * Return code
6302  *    NULL - No vport with the matching @vpi found
6303  *    Otherwise - Address to the vport with the matching @vpi.
6304  **/
6305 struct lpfc_vport *
6306 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
6307 {
6308         struct lpfc_vport *vport;
6309         unsigned long flags;
6310         int i = 0;
6311
6312         /* The physical ports are always vpi 0 - translate is unnecessary. */
6313         if (vpi > 0) {
6314                 /*
6315                  * Translate the physical vpi to the logical vpi.  The
6316                  * vport stores the logical vpi.
6317                  */
6318                 for (i = 0; i < phba->max_vpi; i++) {
6319                         if (vpi == phba->vpi_ids[i])
6320                                 break;
6321                 }
6322
6323                 if (i >= phba->max_vpi) {
6324                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6325                                         "2936 Could not find Vport mapped "
6326                                         "to vpi %d\n", vpi);
6327                         return NULL;
6328                 }
6329         }
6330
6331         spin_lock_irqsave(&phba->port_list_lock, flags);
6332         list_for_each_entry(vport, &phba->port_list, listentry) {
6333                 if (vport->vpi == i) {
6334                         spin_unlock_irqrestore(&phba->port_list_lock, flags);
6335                         return vport;
6336                 }
6337         }
6338         spin_unlock_irqrestore(&phba->port_list_lock, flags);
6339         return NULL;
6340 }
6341
6342 struct lpfc_nodelist *
6343 lpfc_nlp_init(struct lpfc_vport *vport, uint32_t did)
6344 {
6345         struct lpfc_nodelist *ndlp;
6346         int rpi = LPFC_RPI_ALLOC_ERROR;
6347
6348         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6349                 rpi = lpfc_sli4_alloc_rpi(vport->phba);
6350                 if (rpi == LPFC_RPI_ALLOC_ERROR)
6351                         return NULL;
6352         }
6353
6354         ndlp = mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
6355         if (!ndlp) {
6356                 if (vport->phba->sli_rev == LPFC_SLI_REV4)
6357                         lpfc_sli4_free_rpi(vport->phba, rpi);
6358                 return NULL;
6359         }
6360
6361         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
6362
6363         lpfc_initialize_node(vport, ndlp, did);
6364         INIT_LIST_HEAD(&ndlp->nlp_listp);
6365         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6366                 ndlp->nlp_rpi = rpi;
6367                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
6368                                  "0007 Init New ndlp x%px, rpi:x%x DID:%x "
6369                                  "flg:x%x refcnt:%d map:x%x\n",
6370                                  ndlp, ndlp->nlp_rpi, ndlp->nlp_DID,
6371                                  ndlp->nlp_flag, kref_read(&ndlp->kref),
6372                                  ndlp->nlp_usg_map);
6373
6374                 ndlp->active_rrqs_xri_bitmap =
6375                                 mempool_alloc(vport->phba->active_rrq_pool,
6376                                               GFP_KERNEL);
6377                 if (ndlp->active_rrqs_xri_bitmap)
6378                         memset(ndlp->active_rrqs_xri_bitmap, 0,
6379                                ndlp->phba->cfg_rrq_xri_bitmap_sz);
6380         }
6381
6382
6383
6384         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
6385                 "node init:       did:x%x",
6386                 ndlp->nlp_DID, 0, 0);
6387
6388         return ndlp;
6389 }
6390
6391 /* This routine releases all resources associated with a specifc NPort's ndlp
6392  * and mempool_free's the nodelist.
6393  */
6394 static void
6395 lpfc_nlp_release(struct kref *kref)
6396 {
6397         struct lpfc_hba *phba;
6398         unsigned long flags;
6399         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
6400                                                   kref);
6401
6402         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6403                 "node release:    did:x%x flg:x%x type:x%x",
6404                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
6405
6406         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
6407                         "0279 %s: ndlp:x%px did %x "
6408                         "usgmap:x%x refcnt:%d rpi:%x\n",
6409                         __func__,
6410                         (void *)ndlp, ndlp->nlp_DID, ndlp->nlp_usg_map,
6411                         kref_read(&ndlp->kref), ndlp->nlp_rpi);
6412
6413         /* remove ndlp from action. */
6414         lpfc_nlp_remove(ndlp->vport, ndlp);
6415
6416         /* clear the ndlp active flag for all release cases */
6417         phba = ndlp->phba;
6418         spin_lock_irqsave(&phba->ndlp_lock, flags);
6419         NLP_CLR_NODE_ACT(ndlp);
6420         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
6421
6422         /* free ndlp memory for final ndlp release */
6423         if (NLP_CHK_FREE_REQ(ndlp)) {
6424                 kfree(ndlp->lat_data);
6425                 if (phba->sli_rev == LPFC_SLI_REV4)
6426                         mempool_free(ndlp->active_rrqs_xri_bitmap,
6427                                      ndlp->phba->active_rrq_pool);
6428                 mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
6429         }
6430 }
6431
6432 /* This routine bumps the reference count for a ndlp structure to ensure
6433  * that one discovery thread won't free a ndlp while another discovery thread
6434  * is using it.
6435  */
6436 struct lpfc_nodelist *
6437 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
6438 {
6439         struct lpfc_hba *phba;
6440         unsigned long flags;
6441
6442         if (ndlp) {
6443                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6444                         "node get:        did:x%x flg:x%x refcnt:x%x",
6445                         ndlp->nlp_DID, ndlp->nlp_flag,
6446                         kref_read(&ndlp->kref));
6447                 /* The check of ndlp usage to prevent incrementing the
6448                  * ndlp reference count that is in the process of being
6449                  * released.
6450                  */
6451                 phba = ndlp->phba;
6452                 spin_lock_irqsave(&phba->ndlp_lock, flags);
6453                 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
6454                         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
6455                         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
6456                                 "0276 %s: ndlp:x%px "
6457                                 "usgmap:x%x refcnt:%d\n",
6458                                 __func__, (void *)ndlp, ndlp->nlp_usg_map,
6459                                 kref_read(&ndlp->kref));
6460                         return NULL;
6461                 } else
6462                         kref_get(&ndlp->kref);
6463                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
6464         }
6465         return ndlp;
6466 }
6467
6468 /* This routine decrements the reference count for a ndlp structure. If the
6469  * count goes to 0, this indicates the the associated nodelist should be
6470  * freed. Returning 1 indicates the ndlp resource has been released; on the
6471  * other hand, returning 0 indicates the ndlp resource has not been released
6472  * yet.
6473  */
6474 int
6475 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
6476 {
6477         struct lpfc_hba *phba;
6478         unsigned long flags;
6479
6480         if (!ndlp)
6481                 return 1;
6482
6483         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6484                         "node put:        did:x%x flg:x%x refcnt:x%x",
6485                         ndlp->nlp_DID, ndlp->nlp_flag,
6486                         kref_read(&ndlp->kref));
6487         phba = ndlp->phba;
6488         spin_lock_irqsave(&phba->ndlp_lock, flags);
6489         /* Check the ndlp memory free acknowledge flag to avoid the
6490          * possible race condition that kref_put got invoked again
6491          * after previous one has done ndlp memory free.
6492          */
6493         if (NLP_CHK_FREE_ACK(ndlp)) {
6494                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
6495                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
6496                                 "0274 %s: ndlp:x%px "
6497                                 "usgmap:x%x refcnt:%d\n",
6498                                 __func__, (void *)ndlp, ndlp->nlp_usg_map,
6499                                 kref_read(&ndlp->kref));
6500                 return 1;
6501         }
6502         /* Check the ndlp inactivate log flag to avoid the possible
6503          * race condition that kref_put got invoked again after ndlp
6504          * is already in inactivating state.
6505          */
6506         if (NLP_CHK_IACT_REQ(ndlp)) {
6507                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
6508                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
6509                                 "0275 %s: ndlp:x%px "
6510                                 "usgmap:x%x refcnt:%d\n",
6511                                 __func__, (void *)ndlp, ndlp->nlp_usg_map,
6512                                 kref_read(&ndlp->kref));
6513                 return 1;
6514         }
6515         /* For last put, mark the ndlp usage flags to make sure no
6516          * other kref_get and kref_put on the same ndlp shall get
6517          * in between the process when the final kref_put has been
6518          * invoked on this ndlp.
6519          */
6520         if (kref_read(&ndlp->kref) == 1) {
6521                 /* Indicate ndlp is put to inactive state. */
6522                 NLP_SET_IACT_REQ(ndlp);
6523                 /* Acknowledge ndlp memory free has been seen. */
6524                 if (NLP_CHK_FREE_REQ(ndlp))
6525                         NLP_SET_FREE_ACK(ndlp);
6526         }
6527         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
6528         /* Note, the kref_put returns 1 when decrementing a reference
6529          * count that was 1, it invokes the release callback function,
6530          * but it still left the reference count as 1 (not actually
6531          * performs the last decrementation). Otherwise, it actually
6532          * decrements the reference count and returns 0.
6533          */
6534         return kref_put(&ndlp->kref, lpfc_nlp_release);
6535 }
6536
6537 /* This routine free's the specified nodelist if it is not in use
6538  * by any other discovery thread. This routine returns 1 if the
6539  * ndlp has been freed. A return value of 0 indicates the ndlp is
6540  * not yet been released.
6541  */
6542 int
6543 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
6544 {
6545         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6546                 "node not used:   did:x%x flg:x%x refcnt:x%x",
6547                 ndlp->nlp_DID, ndlp->nlp_flag,
6548                 kref_read(&ndlp->kref));
6549         if (kref_read(&ndlp->kref) == 1)
6550                 if (lpfc_nlp_put(ndlp))
6551                         return 1;
6552         return 0;
6553 }
6554
6555 /**
6556  * lpfc_fcf_inuse - Check if FCF can be unregistered.
6557  * @phba: Pointer to hba context object.
6558  *
6559  * This function iterate through all FC nodes associated
6560  * will all vports to check if there is any node with
6561  * fc_rports associated with it. If there is an fc_rport
6562  * associated with the node, then the node is either in
6563  * discovered state or its devloss_timer is pending.
6564  */
6565 static int
6566 lpfc_fcf_inuse(struct lpfc_hba *phba)
6567 {
6568         struct lpfc_vport **vports;
6569         int i, ret = 0;
6570         struct lpfc_nodelist *ndlp;
6571         struct Scsi_Host  *shost;
6572
6573         vports = lpfc_create_vport_work_array(phba);
6574
6575         /* If driver cannot allocate memory, indicate fcf is in use */
6576         if (!vports)
6577                 return 1;
6578
6579         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6580                 shost = lpfc_shost_from_vport(vports[i]);
6581                 spin_lock_irq(shost->host_lock);
6582                 /*
6583                  * IF the CVL_RCVD bit is not set then we have sent the
6584                  * flogi.
6585                  * If dev_loss fires while we are waiting we do not want to
6586                  * unreg the fcf.
6587                  */
6588                 if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) {
6589                         spin_unlock_irq(shost->host_lock);
6590                         ret =  1;
6591                         goto out;
6592                 }
6593                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
6594                         if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport &&
6595                           (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
6596                                 ret = 1;
6597                                 spin_unlock_irq(shost->host_lock);
6598                                 goto out;
6599                         } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
6600                                 ret = 1;
6601                                 lpfc_printf_log(phba, KERN_INFO,
6602                                                 LOG_NODE | LOG_DISCOVERY,
6603                                                 "2624 RPI %x DID %x flag %x "
6604                                                 "still logged in\n",
6605                                                 ndlp->nlp_rpi, ndlp->nlp_DID,
6606                                                 ndlp->nlp_flag);
6607                         }
6608                 }
6609                 spin_unlock_irq(shost->host_lock);
6610         }
6611 out:
6612         lpfc_destroy_vport_work_array(phba, vports);
6613         return ret;
6614 }
6615
6616 /**
6617  * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
6618  * @phba: Pointer to hba context object.
6619  * @mboxq: Pointer to mailbox object.
6620  *
6621  * This function frees memory associated with the mailbox command.
6622  */
6623 void
6624 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6625 {
6626         struct lpfc_vport *vport = mboxq->vport;
6627         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6628
6629         if (mboxq->u.mb.mbxStatus) {
6630                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6631                                 "2555 UNREG_VFI mbxStatus error x%x "
6632                                 "HBA state x%x\n",
6633                                 mboxq->u.mb.mbxStatus, vport->port_state);
6634         }
6635         spin_lock_irq(shost->host_lock);
6636         phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
6637         spin_unlock_irq(shost->host_lock);
6638         mempool_free(mboxq, phba->mbox_mem_pool);
6639         return;
6640 }
6641
6642 /**
6643  * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
6644  * @phba: Pointer to hba context object.
6645  * @mboxq: Pointer to mailbox object.
6646  *
6647  * This function frees memory associated with the mailbox command.
6648  */
6649 static void
6650 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6651 {
6652         struct lpfc_vport *vport = mboxq->vport;
6653
6654         if (mboxq->u.mb.mbxStatus) {
6655                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6656                                 "2550 UNREG_FCFI mbxStatus error x%x "
6657                                 "HBA state x%x\n",
6658                                 mboxq->u.mb.mbxStatus, vport->port_state);
6659         }
6660         mempool_free(mboxq, phba->mbox_mem_pool);
6661         return;
6662 }
6663
6664 /**
6665  * lpfc_unregister_fcf_prep - Unregister fcf record preparation
6666  * @phba: Pointer to hba context object.
6667  *
6668  * This function prepare the HBA for unregistering the currently registered
6669  * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
6670  * VFIs.
6671  */
6672 int
6673 lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
6674 {
6675         struct lpfc_vport **vports;
6676         struct lpfc_nodelist *ndlp;
6677         struct Scsi_Host *shost;
6678         int i = 0, rc;
6679
6680         /* Unregister RPIs */
6681         if (lpfc_fcf_inuse(phba))
6682                 lpfc_unreg_hba_rpis(phba);
6683
6684         /* At this point, all discovery is aborted */
6685         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
6686
6687         /* Unregister VPIs */
6688         vports = lpfc_create_vport_work_array(phba);
6689         if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
6690                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6691                         /* Stop FLOGI/FDISC retries */
6692                         ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
6693                         if (ndlp)
6694                                 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
6695                         lpfc_cleanup_pending_mbox(vports[i]);
6696                         if (phba->sli_rev == LPFC_SLI_REV4)
6697                                 lpfc_sli4_unreg_all_rpis(vports[i]);
6698                         lpfc_mbx_unreg_vpi(vports[i]);
6699                         shost = lpfc_shost_from_vport(vports[i]);
6700                         spin_lock_irq(shost->host_lock);
6701                         vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6702                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
6703                         spin_unlock_irq(shost->host_lock);
6704                 }
6705         lpfc_destroy_vport_work_array(phba, vports);
6706         if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) {
6707                 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
6708                 if (ndlp)
6709                         lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
6710                 lpfc_cleanup_pending_mbox(phba->pport);
6711                 if (phba->sli_rev == LPFC_SLI_REV4)
6712                         lpfc_sli4_unreg_all_rpis(phba->pport);
6713                 lpfc_mbx_unreg_vpi(phba->pport);
6714                 shost = lpfc_shost_from_vport(phba->pport);
6715                 spin_lock_irq(shost->host_lock);
6716                 phba->pport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6717                 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED;
6718                 spin_unlock_irq(shost->host_lock);
6719         }
6720
6721         /* Cleanup any outstanding ELS commands */
6722         lpfc_els_flush_all_cmd(phba);
6723
6724         /* Unregister the physical port VFI */
6725         rc = lpfc_issue_unreg_vfi(phba->pport);
6726         return rc;
6727 }
6728
6729 /**
6730  * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
6731  * @phba: Pointer to hba context object.
6732  *
6733  * This function issues synchronous unregister FCF mailbox command to HBA to
6734  * unregister the currently registered FCF record. The driver does not reset
6735  * the driver FCF usage state flags.
6736  *
6737  * Return 0 if successfully issued, none-zero otherwise.
6738  */
6739 int
6740 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
6741 {
6742         LPFC_MBOXQ_t *mbox;
6743         int rc;
6744
6745         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6746         if (!mbox) {
6747                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6748                                 "2551 UNREG_FCFI mbox allocation failed"
6749                                 "HBA state x%x\n", phba->pport->port_state);
6750                 return -ENOMEM;
6751         }
6752         lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
6753         mbox->vport = phba->pport;
6754         mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
6755         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
6756
6757         if (rc == MBX_NOT_FINISHED) {
6758                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6759                                 "2552 Unregister FCFI command failed rc x%x "
6760                                 "HBA state x%x\n",
6761                                 rc, phba->pport->port_state);
6762                 return -EINVAL;
6763         }
6764         return 0;
6765 }
6766
6767 /**
6768  * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
6769  * @phba: Pointer to hba context object.
6770  *
6771  * This function unregisters the currently reigstered FCF. This function
6772  * also tries to find another FCF for discovery by rescan the HBA FCF table.
6773  */
6774 void
6775 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
6776 {
6777         int rc;
6778
6779         /* Preparation for unregistering fcf */
6780         rc = lpfc_unregister_fcf_prep(phba);
6781         if (rc) {
6782                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6783                                 "2748 Failed to prepare for unregistering "
6784                                 "HBA's FCF record: rc=%d\n", rc);
6785                 return;
6786         }
6787
6788         /* Now, unregister FCF record and reset HBA FCF state */
6789         rc = lpfc_sli4_unregister_fcf(phba);
6790         if (rc)
6791                 return;
6792         /* Reset HBA FCF states after successful unregister FCF */
6793         phba->fcf.fcf_flag = 0;
6794         phba->fcf.current_rec.flag = 0;
6795
6796         /*
6797          * If driver is not unloading, check if there is any other
6798          * FCF record that can be used for discovery.
6799          */
6800         if ((phba->pport->load_flag & FC_UNLOADING) ||
6801             (phba->link_state < LPFC_LINK_UP))
6802                 return;
6803
6804         /* This is considered as the initial FCF discovery scan */
6805         spin_lock_irq(&phba->hbalock);
6806         phba->fcf.fcf_flag |= FCF_INIT_DISC;
6807         spin_unlock_irq(&phba->hbalock);
6808
6809         /* Reset FCF roundrobin bmask for new discovery */
6810         lpfc_sli4_clear_fcf_rr_bmask(phba);
6811
6812         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
6813
6814         if (rc) {
6815                 spin_lock_irq(&phba->hbalock);
6816                 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
6817                 spin_unlock_irq(&phba->hbalock);
6818                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6819                                 "2553 lpfc_unregister_unused_fcf failed "
6820                                 "to read FCF record HBA state x%x\n",
6821                                 phba->pport->port_state);
6822         }
6823 }
6824
6825 /**
6826  * lpfc_unregister_fcf - Unregister the currently registered fcf record
6827  * @phba: Pointer to hba context object.
6828  *
6829  * This function just unregisters the currently reigstered FCF. It does not
6830  * try to find another FCF for discovery.
6831  */
6832 void
6833 lpfc_unregister_fcf(struct lpfc_hba *phba)
6834 {
6835         int rc;
6836
6837         /* Preparation for unregistering fcf */
6838         rc = lpfc_unregister_fcf_prep(phba);
6839         if (rc) {
6840                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6841                                 "2749 Failed to prepare for unregistering "
6842                                 "HBA's FCF record: rc=%d\n", rc);
6843                 return;
6844         }
6845
6846         /* Now, unregister FCF record and reset HBA FCF state */
6847         rc = lpfc_sli4_unregister_fcf(phba);
6848         if (rc)
6849                 return;
6850         /* Set proper HBA FCF states after successful unregister FCF */
6851         spin_lock_irq(&phba->hbalock);
6852         phba->fcf.fcf_flag &= ~FCF_REGISTERED;
6853         spin_unlock_irq(&phba->hbalock);
6854 }
6855
6856 /**
6857  * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
6858  * @phba: Pointer to hba context object.
6859  *
6860  * This function check if there are any connected remote port for the FCF and
6861  * if all the devices are disconnected, this function unregister FCFI.
6862  * This function also tries to use another FCF for discovery.
6863  */
6864 void
6865 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
6866 {
6867         /*
6868          * If HBA is not running in FIP mode, if HBA does not support
6869          * FCoE, if FCF discovery is ongoing, or if FCF has not been
6870          * registered, do nothing.
6871          */
6872         spin_lock_irq(&phba->hbalock);
6873         if (!(phba->hba_flag & HBA_FCOE_MODE) ||
6874             !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
6875             !(phba->hba_flag & HBA_FIP_SUPPORT) ||
6876             (phba->fcf.fcf_flag & FCF_DISCOVERY) ||
6877             (phba->pport->port_state == LPFC_FLOGI)) {
6878                 spin_unlock_irq(&phba->hbalock);
6879                 return;
6880         }
6881         spin_unlock_irq(&phba->hbalock);
6882
6883         if (lpfc_fcf_inuse(phba))
6884                 return;
6885
6886         lpfc_unregister_fcf_rescan(phba);
6887 }
6888
6889 /**
6890  * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
6891  * @phba: Pointer to hba context object.
6892  * @buff: Buffer containing the FCF connection table as in the config
6893  *         region.
6894  * This function create driver data structure for the FCF connection
6895  * record table read from config region 23.
6896  */
6897 static void
6898 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
6899         uint8_t *buff)
6900 {
6901         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
6902         struct lpfc_fcf_conn_hdr *conn_hdr;
6903         struct lpfc_fcf_conn_rec *conn_rec;
6904         uint32_t record_count;
6905         int i;
6906
6907         /* Free the current connect table */
6908         list_for_each_entry_safe(conn_entry, next_conn_entry,
6909                 &phba->fcf_conn_rec_list, list) {
6910                 list_del_init(&conn_entry->list);
6911                 kfree(conn_entry);
6912         }
6913
6914         conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
6915         record_count = conn_hdr->length * sizeof(uint32_t)/
6916                 sizeof(struct lpfc_fcf_conn_rec);
6917
6918         conn_rec = (struct lpfc_fcf_conn_rec *)
6919                 (buff + sizeof(struct lpfc_fcf_conn_hdr));
6920
6921         for (i = 0; i < record_count; i++) {
6922                 if (!(conn_rec[i].flags & FCFCNCT_VALID))
6923                         continue;
6924                 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
6925                         GFP_KERNEL);
6926                 if (!conn_entry) {
6927                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6928                                         "2566 Failed to allocate connection"
6929                                         " table entry\n");
6930                         return;
6931                 }
6932
6933                 memcpy(&conn_entry->conn_rec, &conn_rec[i],
6934                         sizeof(struct lpfc_fcf_conn_rec));
6935                 list_add_tail(&conn_entry->list,
6936                         &phba->fcf_conn_rec_list);
6937         }
6938
6939         if (!list_empty(&phba->fcf_conn_rec_list)) {
6940                 i = 0;
6941                 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list,
6942                                     list) {
6943                         conn_rec = &conn_entry->conn_rec;
6944                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6945                                         "3345 FCF connection list rec[%02d]: "
6946                                         "flags:x%04x, vtag:x%04x, "
6947                                         "fabric_name:x%02x:%02x:%02x:%02x:"
6948                                         "%02x:%02x:%02x:%02x, "
6949                                         "switch_name:x%02x:%02x:%02x:%02x:"
6950                                         "%02x:%02x:%02x:%02x\n", i++,
6951                                         conn_rec->flags, conn_rec->vlan_tag,
6952                                         conn_rec->fabric_name[0],
6953                                         conn_rec->fabric_name[1],
6954                                         conn_rec->fabric_name[2],
6955                                         conn_rec->fabric_name[3],
6956                                         conn_rec->fabric_name[4],
6957                                         conn_rec->fabric_name[5],
6958                                         conn_rec->fabric_name[6],
6959                                         conn_rec->fabric_name[7],
6960                                         conn_rec->switch_name[0],
6961                                         conn_rec->switch_name[1],
6962                                         conn_rec->switch_name[2],
6963                                         conn_rec->switch_name[3],
6964                                         conn_rec->switch_name[4],
6965                                         conn_rec->switch_name[5],
6966                                         conn_rec->switch_name[6],
6967                                         conn_rec->switch_name[7]);
6968                 }
6969         }
6970 }
6971
6972 /**
6973  * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
6974  * @phba: Pointer to hba context object.
6975  * @buff: Buffer containing the FCoE parameter data structure.
6976  *
6977  *  This function update driver data structure with config
6978  *  parameters read from config region 23.
6979  */
6980 static void
6981 lpfc_read_fcoe_param(struct lpfc_hba *phba,
6982                         uint8_t *buff)
6983 {
6984         struct lpfc_fip_param_hdr *fcoe_param_hdr;
6985         struct lpfc_fcoe_params *fcoe_param;
6986
6987         fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
6988                 buff;
6989         fcoe_param = (struct lpfc_fcoe_params *)
6990                 (buff + sizeof(struct lpfc_fip_param_hdr));
6991
6992         if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
6993                 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
6994                 return;
6995
6996         if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
6997                 phba->valid_vlan = 1;
6998                 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
6999                         0xFFF;
7000         }
7001
7002         phba->fc_map[0] = fcoe_param->fc_map[0];
7003         phba->fc_map[1] = fcoe_param->fc_map[1];
7004         phba->fc_map[2] = fcoe_param->fc_map[2];
7005         return;
7006 }
7007
7008 /**
7009  * lpfc_get_rec_conf23 - Get a record type in config region data.
7010  * @buff: Buffer containing config region 23 data.
7011  * @size: Size of the data buffer.
7012  * @rec_type: Record type to be searched.
7013  *
7014  * This function searches config region data to find the beginning
7015  * of the record specified by record_type. If record found, this
7016  * function return pointer to the record else return NULL.
7017  */
7018 static uint8_t *
7019 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
7020 {
7021         uint32_t offset = 0, rec_length;
7022
7023         if ((buff[0] == LPFC_REGION23_LAST_REC) ||
7024                 (size < sizeof(uint32_t)))
7025                 return NULL;
7026
7027         rec_length = buff[offset + 1];
7028
7029         /*
7030          * One TLV record has one word header and number of data words
7031          * specified in the rec_length field of the record header.
7032          */
7033         while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
7034                 <= size) {
7035                 if (buff[offset] == rec_type)
7036                         return &buff[offset];
7037
7038                 if (buff[offset] == LPFC_REGION23_LAST_REC)
7039                         return NULL;
7040
7041                 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
7042                 rec_length = buff[offset + 1];
7043         }
7044         return NULL;
7045 }
7046
7047 /**
7048  * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
7049  * @phba: Pointer to lpfc_hba data structure.
7050  * @buff: Buffer containing config region 23 data.
7051  * @size: Size of the data buffer.
7052  *
7053  * This function parses the FCoE config parameters in config region 23 and
7054  * populate driver data structure with the parameters.
7055  */
7056 void
7057 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
7058                 uint8_t *buff,
7059                 uint32_t size)
7060 {
7061         uint32_t offset = 0;
7062         uint8_t *rec_ptr;
7063
7064         /*
7065          * If data size is less than 2 words signature and version cannot be
7066          * verified.
7067          */
7068         if (size < 2*sizeof(uint32_t))
7069                 return;
7070
7071         /* Check the region signature first */
7072         if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
7073                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7074                         "2567 Config region 23 has bad signature\n");
7075                 return;
7076         }
7077
7078         offset += 4;
7079
7080         /* Check the data structure version */
7081         if (buff[offset] != LPFC_REGION23_VERSION) {
7082                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7083                                 "2568 Config region 23 has bad version\n");
7084                 return;
7085         }
7086         offset += 4;
7087
7088         /* Read FCoE param record */
7089         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
7090                         size - offset, FCOE_PARAM_TYPE);
7091         if (rec_ptr)
7092                 lpfc_read_fcoe_param(phba, rec_ptr);
7093
7094         /* Read FCF connection table */
7095         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
7096                 size - offset, FCOE_CONN_TBL_TYPE);
7097         if (rec_ptr)
7098                 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
7099
7100 }