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) 2004-2011 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of version 2 of the GNU General       *
  11  * Public License as published by the Free Software Foundation.    *
  12  * This program is distributed in the hope that it will be useful. *
  13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18  * more details, a copy of which can be found in the file COPYING  *
  19  * included with this package.                                     *
  20  *******************************************************************/
  21
  22 #include <linux/blkdev.h>
  23 #include <linux/delay.h>
  24 #include <linux/slab.h>
  25 #include <linux/pci.h>
  26 #include <linux/kthread.h>
  27 #include <linux/interrupt.h>
  28
  29 #include <scsi/scsi.h>
  30 #include <scsi/scsi_device.h>
  31 #include <scsi/scsi_host.h>
  32 #include <scsi/scsi_transport_fc.h>
  33
  34 #include "lpfc_hw4.h"
  35 #include "lpfc_hw.h"
  36 #include "lpfc_nl.h"
  37 #include "lpfc_disc.h"
  38 #include "lpfc_sli.h"
  39 #include "lpfc_sli4.h"
  40 #include "lpfc_scsi.h"
  41 #include "lpfc.h"
  42 #include "lpfc_logmsg.h"
  43 #include "lpfc_crtn.h"
  44 #include "lpfc_vport.h"
  45 #include "lpfc_debugfs.h"
  46
  47 /* AlpaArray for assignment of scsid for scan-down and bind_method */
  48 static uint8_t lpfcAlpaArray[] = {
  49         0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
  50         0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
  51         0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
  52         0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
  53         0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
  54         0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
  55         0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
  56         0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
  57         0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
  58         0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
  59         0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
  60         0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
  61         0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
  62 };
  63
  64 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
  65 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
  66 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
  67 static int lpfc_fcf_inuse(struct lpfc_hba *);
  68
  69 void
  70 lpfc_terminate_rport_io(struct fc_rport *rport)
  71 {
  72         struct lpfc_rport_data *rdata;
  73         struct lpfc_nodelist * ndlp;
  74         struct lpfc_hba *phba;
  75
  76         rdata = rport->dd_data;
  77         ndlp = rdata->pnode;
  78
  79         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
  80                 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
  81                         printk(KERN_ERR "Cannot find remote node"
  82                         " to terminate I/O Data x%x\n",
  83                         rport->port_id);
  84                 return;
  85         }
  86
  87         phba  = ndlp->phba;
  88
  89         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
  90                 "rport terminate: sid:x%x did:x%x flg:x%x",
  91                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
  92
  93         if (ndlp->nlp_sid != NLP_NO_SID) {
  94                 lpfc_sli_abort_iocb(ndlp->vport,
  95                         &phba->sli.ring[phba->sli.fcp_ring],
  96                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
  97         }
  98 }
  99
 100 /*
 101  * This function will be called when dev_loss_tmo fire.
 102  */
 103 void
 104 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
 105 {
 106         struct lpfc_rport_data *rdata;
 107         struct lpfc_nodelist * ndlp;
 108         struct lpfc_vport *vport;
 109         struct lpfc_hba   *phba;
 110         struct lpfc_work_evt *evtp;
 111         int  put_node;
 112         int  put_rport;
 113
 114         rdata = rport->dd_data;
 115         ndlp = rdata->pnode;
 116         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
 117                 return;
 118
 119         vport = ndlp->vport;
 120         phba  = vport->phba;
 121
 122         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 123                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
 124                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 125
 126         /* Don't defer this if we are in the process of deleting the vport
 127          * or unloading the driver. The unload will cleanup the node
 128          * appropriately we just need to cleanup the ndlp rport info here.
 129          */
 130         if (vport->load_flag & FC_UNLOADING) {
 131                 put_node = rdata->pnode != NULL;
 132                 put_rport = ndlp->rport != NULL;
 133                 rdata->pnode = NULL;
 134                 ndlp->rport = NULL;
 135                 if (put_node)
 136                         lpfc_nlp_put(ndlp);
 137                 if (put_rport)
 138                         put_device(&rport->dev);
 139                 return;
 140         }
 141
 142         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 143                 return;
 144
 145         evtp = &ndlp->dev_loss_evt;
 146
 147         if (!list_empty(&evtp->evt_listp))
 148                 return;
 149
 150         spin_lock_irq(&phba->hbalock);
 151         /* We need to hold the node by incrementing the reference
 152          * count until this queued work is done
 153          */
 154         evtp->evt_arg1  = lpfc_nlp_get(ndlp);
 155         if (evtp->evt_arg1) {
 156                 evtp->evt = LPFC_EVT_DEV_LOSS;
 157                 list_add_tail(&evtp->evt_listp, &phba->work_list);
 158                 lpfc_worker_wake_up(phba);
 159         }
 160         spin_unlock_irq(&phba->hbalock);
 161
 162         return;
 163 }
 164
 165 /**
 166  * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler
 167  * @ndlp: Pointer to remote node object.
 168  *
 169  * This function is called from the worker thread when devloss timeout timer
 170  * expires. For SLI4 host, this routine shall return 1 when at lease one
 171  * remote node, including this @ndlp, is still in use of FCF; otherwise, this
 172  * routine shall return 0 when there is no remote node is still in use of FCF
 173  * when devloss timeout happened to this @ndlp.
 174  **/
 175 static int
 176 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 177 {
 178         struct lpfc_rport_data *rdata;
 179         struct fc_rport   *rport;
 180         struct lpfc_vport *vport;
 181         struct lpfc_hba   *phba;
 182         uint8_t *name;
 183         int  put_node;
 184         int  put_rport;
 185         int warn_on = 0;
 186         int fcf_inuse = 0;
 187
 188         rport = ndlp->rport;
 189
 190         if (!rport)
 191                 return fcf_inuse;
 192
 193         rdata = rport->dd_data;
 194         name = (uint8_t *) &ndlp->nlp_portname;
 195         vport = ndlp->vport;
 196         phba  = vport->phba;
 197
 198         if (phba->sli_rev == LPFC_SLI_REV4)
 199                 fcf_inuse = lpfc_fcf_inuse(phba);
 200
 201         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 202                 "rport devlosstmo:did:x%x type:x%x id:x%x",
 203                 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
 204
 205         /* Don't defer this if we are in the process of deleting the vport
 206          * or unloading the driver. The unload will cleanup the node
 207          * appropriately we just need to cleanup the ndlp rport info here.
 208          */
 209         if (vport->load_flag & FC_UNLOADING) {
 210                 if (ndlp->nlp_sid != NLP_NO_SID) {
 211                         /* flush the target */
 212                         lpfc_sli_abort_iocb(vport,
 213                                         &phba->sli.ring[phba->sli.fcp_ring],
 214                                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 215                 }
 216                 put_node = rdata->pnode != NULL;
 217                 put_rport = ndlp->rport != NULL;
 218                 rdata->pnode = NULL;
 219                 ndlp->rport = NULL;
 220                 if (put_node)
 221                         lpfc_nlp_put(ndlp);
 222                 if (put_rport)
 223                         put_device(&rport->dev);
 224                 return fcf_inuse;
 225         }
 226
 227         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
 228                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 229                                  "0284 Devloss timeout Ignored on "
 230                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 231                                  "NPort x%x\n",
 232                                  *name, *(name+1), *(name+2), *(name+3),
 233                                  *(name+4), *(name+5), *(name+6), *(name+7),
 234                                  ndlp->nlp_DID);
 235                 return fcf_inuse;
 236         }
 237
 238         if (ndlp->nlp_type & NLP_FABRIC) {
 239                 /* We will clean up these Nodes in linkup */
 240                 put_node = rdata->pnode != NULL;
 241                 put_rport = ndlp->rport != NULL;
 242                 rdata->pnode = NULL;
 243                 ndlp->rport = NULL;
 244                 if (put_node)
 245                         lpfc_nlp_put(ndlp);
 246                 if (put_rport)
 247                         put_device(&rport->dev);
 248                 return fcf_inuse;
 249         }
 250
 251         if (ndlp->nlp_sid != NLP_NO_SID) {
 252                 warn_on = 1;
 253                 /* flush the target */
 254                 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
 255                                     ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 256         }
 257
 258         if (warn_on) {
 259                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 260                                  "0203 Devloss timeout on "
 261                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 262                                  "NPort x%06x Data: x%x x%x x%x\n",
 263                                  *name, *(name+1), *(name+2), *(name+3),
 264                                  *(name+4), *(name+5), *(name+6), *(name+7),
 265                                  ndlp->nlp_DID, ndlp->nlp_flag,
 266                                  ndlp->nlp_state, ndlp->nlp_rpi);
 267         } else {
 268                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 269                                  "0204 Devloss timeout on "
 270                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 271                                  "NPort x%06x Data: x%x x%x x%x\n",
 272                                  *name, *(name+1), *(name+2), *(name+3),
 273                                  *(name+4), *(name+5), *(name+6), *(name+7),
 274                                  ndlp->nlp_DID, ndlp->nlp_flag,
 275                                  ndlp->nlp_state, ndlp->nlp_rpi);
 276         }
 277
 278         put_node = rdata->pnode != NULL;
 279         put_rport = ndlp->rport != NULL;
 280         rdata->pnode = NULL;
 281         ndlp->rport = NULL;
 282         if (put_node)
 283                 lpfc_nlp_put(ndlp);
 284         if (put_rport)
 285                 put_device(&rport->dev);
 286
 287         if (!(vport->load_flag & FC_UNLOADING) &&
 288             !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
 289             !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 290             (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
 291             (ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) &&
 292             (ndlp->nlp_state != NLP_STE_PRLI_ISSUE))
 293                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 294
 295         return fcf_inuse;
 296 }
 297
 298 /**
 299  * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler
 300  * @phba: Pointer to hba context object.
 301  * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler.
 302  * @nlp_did: remote node identifer with devloss timeout.
 303  *
 304  * This function is called from the worker thread after invoking devloss
 305  * timeout handler and releasing the reference count for the ndlp with
 306  * which the devloss timeout was handled for SLI4 host. For the devloss
 307  * timeout of the last remote node which had been in use of FCF, when this
 308  * routine is invoked, it shall be guaranteed that none of the remote are
 309  * in-use of FCF. When devloss timeout to the last remote using the FCF,
 310  * if the FIP engine is neither in FCF table scan process nor roundrobin
 311  * failover process, the in-use FCF shall be unregistered. If the FIP
 312  * engine is in FCF discovery process, the devloss timeout state shall
 313  * be set for either the FCF table scan process or roundrobin failover
 314  * process to unregister the in-use FCF.
 315  **/
 316 static void
 317 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse,
 318                                     uint32_t nlp_did)
 319 {
 320         /* If devloss timeout happened to a remote node when FCF had no
 321          * longer been in-use, do nothing.
 322          */
 323         if (!fcf_inuse)
 324                 return;
 325
 326         if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) {
 327                 spin_lock_irq(&phba->hbalock);
 328                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
 329                         if (phba->hba_flag & HBA_DEVLOSS_TMO) {
 330                                 spin_unlock_irq(&phba->hbalock);
 331                                 return;
 332                         }
 333                         phba->hba_flag |= HBA_DEVLOSS_TMO;
 334                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 335                                         "2847 Last remote node (x%x) using "
 336                                         "FCF devloss tmo\n", nlp_did);
 337                 }
 338                 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) {
 339                         spin_unlock_irq(&phba->hbalock);
 340                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 341                                         "2868 Devloss tmo to FCF rediscovery "
 342                                         "in progress\n");
 343                         return;
 344                 }
 345                 if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) {
 346                         spin_unlock_irq(&phba->hbalock);
 347                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 348                                         "2869 Devloss tmo to idle FIP engine, "
 349                                         "unreg in-use FCF and rescan.\n");
 350                         /* Unregister in-use FCF and rescan */
 351                         lpfc_unregister_fcf_rescan(phba);
 352                         return;
 353                 }
 354                 spin_unlock_irq(&phba->hbalock);
 355                 if (phba->hba_flag & FCF_TS_INPROG)
 356                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 357                                         "2870 FCF table scan in progress\n");
 358                 if (phba->hba_flag & FCF_RR_INPROG)
 359                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 360                                         "2871 FLOGI roundrobin FCF failover "
 361                                         "in progress\n");
 362         }
 363         lpfc_unregister_unused_fcf(phba);
 364 }
 365
 366 /**
 367  * lpfc_alloc_fast_evt - Allocates data structure for posting event
 368  * @phba: Pointer to hba context object.
 369  *
 370  * This function is called from the functions which need to post
 371  * events from interrupt context. This function allocates data
 372  * structure required for posting event. It also keeps track of
 373  * number of events pending and prevent event storm when there are
 374  * too many events.
 375  **/
 376 struct lpfc_fast_path_event *
 377 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
 378         struct lpfc_fast_path_event *ret;
 379
 380         /* If there are lot of fast event do not exhaust memory due to this */
 381         if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
 382                 return NULL;
 383
 384         ret = kzalloc(sizeof(struct lpfc_fast_path_event),
 385                         GFP_ATOMIC);
 386         if (ret) {
 387                 atomic_inc(&phba->fast_event_count);
 388                 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
 389                 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
 390         }
 391         return ret;
 392 }
 393
 394 /**
 395  * lpfc_free_fast_evt - Frees event data structure
 396  * @phba: Pointer to hba context object.
 397  * @evt:  Event object which need to be freed.
 398  *
 399  * This function frees the data structure required for posting
 400  * events.
 401  **/
 402 void
 403 lpfc_free_fast_evt(struct lpfc_hba *phba,
 404                 struct lpfc_fast_path_event *evt) {
 405
 406         atomic_dec(&phba->fast_event_count);
 407         kfree(evt);
 408 }
 409
 410 /**
 411  * lpfc_send_fastpath_evt - Posts events generated from fast path
 412  * @phba: Pointer to hba context object.
 413  * @evtp: Event data structure.
 414  *
 415  * This function is called from worker thread, when the interrupt
 416  * context need to post an event. This function posts the event
 417  * to fc transport netlink interface.
 418  **/
 419 static void
 420 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
 421                 struct lpfc_work_evt *evtp)
 422 {
 423         unsigned long evt_category, evt_sub_category;
 424         struct lpfc_fast_path_event *fast_evt_data;
 425         char *evt_data;
 426         uint32_t evt_data_size;
 427         struct Scsi_Host *shost;
 428
 429         fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
 430                 work_evt);
 431
 432         evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
 433         evt_sub_category = (unsigned long) fast_evt_data->un.
 434                         fabric_evt.subcategory;
 435         shost = lpfc_shost_from_vport(fast_evt_data->vport);
 436         if (evt_category == FC_REG_FABRIC_EVENT) {
 437                 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
 438                         evt_data = (char *) &fast_evt_data->un.read_check_error;
 439                         evt_data_size = sizeof(fast_evt_data->un.
 440                                 read_check_error);
 441                 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
 442                         (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
 443                         evt_data = (char *) &fast_evt_data->un.fabric_evt;
 444                         evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
 445                 } else {
 446                         lpfc_free_fast_evt(phba, fast_evt_data);
 447                         return;
 448                 }
 449         } else if (evt_category == FC_REG_SCSI_EVENT) {
 450                 switch (evt_sub_category) {
 451                 case LPFC_EVENT_QFULL:
 452                 case LPFC_EVENT_DEVBSY:
 453                         evt_data = (char *) &fast_evt_data->un.scsi_evt;
 454                         evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
 455                         break;
 456                 case LPFC_EVENT_CHECK_COND:
 457                         evt_data = (char *) &fast_evt_data->un.check_cond_evt;
 458                         evt_data_size =  sizeof(fast_evt_data->un.
 459                                 check_cond_evt);
 460                         break;
 461                 case LPFC_EVENT_VARQUEDEPTH:
 462                         evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
 463                         evt_data_size = sizeof(fast_evt_data->un.
 464                                 queue_depth_evt);
 465                         break;
 466                 default:
 467                         lpfc_free_fast_evt(phba, fast_evt_data);
 468                         return;
 469                 }
 470         } else {
 471                 lpfc_free_fast_evt(phba, fast_evt_data);
 472                 return;
 473         }
 474
 475         fc_host_post_vendor_event(shost,
 476                 fc_get_event_number(),
 477                 evt_data_size,
 478                 evt_data,
 479                 LPFC_NL_VENDOR_ID);
 480
 481         lpfc_free_fast_evt(phba, fast_evt_data);
 482         return;
 483 }
 484
 485 static void
 486 lpfc_work_list_done(struct lpfc_hba *phba)
 487 {
 488         struct lpfc_work_evt  *evtp = NULL;
 489         struct lpfc_nodelist  *ndlp;
 490         int free_evt;
 491         int fcf_inuse;
 492         uint32_t nlp_did;
 493
 494         spin_lock_irq(&phba->hbalock);
 495         while (!list_empty(&phba->work_list)) {
 496                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 497                                  evt_listp);
 498                 spin_unlock_irq(&phba->hbalock);
 499                 free_evt = 1;
 500                 switch (evtp->evt) {
 501                 case LPFC_EVT_ELS_RETRY:
 502                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 503                         lpfc_els_retry_delay_handler(ndlp);
 504                         free_evt = 0; /* evt is part of ndlp */
 505                         /* decrement the node reference count held
 506                          * for this queued work
 507                          */
 508                         lpfc_nlp_put(ndlp);
 509                         break;
 510                 case LPFC_EVT_DEV_LOSS:
 511                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 512                         fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp);
 513                         free_evt = 0;
 514                         /* decrement the node reference count held for
 515                          * this queued work
 516                          */
 517                         nlp_did = ndlp->nlp_DID;
 518                         lpfc_nlp_put(ndlp);
 519                         if (phba->sli_rev == LPFC_SLI_REV4)
 520                                 lpfc_sli4_post_dev_loss_tmo_handler(phba,
 521                                                                     fcf_inuse,
 522                                                                     nlp_did);
 523                         break;
 524                 case LPFC_EVT_ONLINE:
 525                         if (phba->link_state < LPFC_LINK_DOWN)
 526                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 527                         else
 528                                 *(int *) (evtp->evt_arg1) = 0;
 529                         complete((struct completion *)(evtp->evt_arg2));
 530                         break;
 531                 case LPFC_EVT_OFFLINE_PREP:
 532                         if (phba->link_state >= LPFC_LINK_DOWN)
 533                                 lpfc_offline_prep(phba);
 534                         *(int *)(evtp->evt_arg1) = 0;
 535                         complete((struct completion *)(evtp->evt_arg2));
 536                         break;
 537                 case LPFC_EVT_OFFLINE:
 538                         lpfc_offline(phba);
 539                         lpfc_sli_brdrestart(phba);
 540                         *(int *)(evtp->evt_arg1) =
 541                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 542                         lpfc_unblock_mgmt_io(phba);
 543                         complete((struct completion *)(evtp->evt_arg2));
 544                         break;
 545                 case LPFC_EVT_WARM_START:
 546                         lpfc_offline(phba);
 547                         lpfc_reset_barrier(phba);
 548                         lpfc_sli_brdreset(phba);
 549                         lpfc_hba_down_post(phba);
 550                         *(int *)(evtp->evt_arg1) =
 551                                 lpfc_sli_brdready(phba, HS_MBRDY);
 552                         lpfc_unblock_mgmt_io(phba);
 553                         complete((struct completion *)(evtp->evt_arg2));
 554                         break;
 555                 case LPFC_EVT_KILL:
 556                         lpfc_offline(phba);
 557                         *(int *)(evtp->evt_arg1)
 558                                 = (phba->pport->stopped)
 559                                         ? 0 : lpfc_sli_brdkill(phba);
 560                         lpfc_unblock_mgmt_io(phba);
 561                         complete((struct completion *)(evtp->evt_arg2));
 562                         break;
 563                 case LPFC_EVT_FASTPATH_MGMT_EVT:
 564                         lpfc_send_fastpath_evt(phba, evtp);
 565                         free_evt = 0;
 566                         break;
 567                 case LPFC_EVT_RESET_HBA:
 568                         if (!(phba->pport->load_flag & FC_UNLOADING))
 569                                 lpfc_reset_hba(phba);
 570                         break;
 571                 }
 572                 if (free_evt)
 573                         kfree(evtp);
 574                 spin_lock_irq(&phba->hbalock);
 575         }
 576         spin_unlock_irq(&phba->hbalock);
 577
 578 }
 579
 580 static void
 581 lpfc_work_done(struct lpfc_hba *phba)
 582 {
 583         struct lpfc_sli_ring *pring;
 584         uint32_t ha_copy, status, control, work_port_events;
 585         struct lpfc_vport **vports;
 586         struct lpfc_vport *vport;
 587         int i;
 588
 589         spin_lock_irq(&phba->hbalock);
 590         ha_copy = phba->work_ha;
 591         phba->work_ha = 0;
 592         spin_unlock_irq(&phba->hbalock);
 593
 594         /* First, try to post the next mailbox command to SLI4 device */
 595         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
 596                 lpfc_sli4_post_async_mbox(phba);
 597
 598         if (ha_copy & HA_ERATT)
 599                 /* Handle the error attention event */
 600                 lpfc_handle_eratt(phba);
 601
 602         if (ha_copy & HA_MBATT)
 603                 lpfc_sli_handle_mb_event(phba);
 604
 605         if (ha_copy & HA_LATT)
 606                 lpfc_handle_latt(phba);
 607
 608         /* Process SLI4 events */
 609         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
 610                 if (phba->hba_flag & HBA_RRQ_ACTIVE)
 611                         lpfc_handle_rrq_active(phba);
 612                 if (phba->hba_flag & FCP_XRI_ABORT_EVENT)
 613                         lpfc_sli4_fcp_xri_abort_event_proc(phba);
 614                 if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
 615                         lpfc_sli4_els_xri_abort_event_proc(phba);
 616                 if (phba->hba_flag & ASYNC_EVENT)
 617                         lpfc_sli4_async_event_proc(phba);
 618                 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
 619                         spin_lock_irq(&phba->hbalock);
 620                         phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
 621                         spin_unlock_irq(&phba->hbalock);
 622                         lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
 623                 }
 624                 if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
 625                         lpfc_sli4_fcf_redisc_event_proc(phba);
 626         }
 627
 628         vports = lpfc_create_vport_work_array(phba);
 629         if (vports != NULL)
 630                 for (i = 0; i <= phba->max_vports; i++) {
 631                         /*
 632                          * We could have no vports in array if unloading, so if
 633                          * this happens then just use the pport
 634                          */
 635                         if (vports[i] == NULL && i == 0)
 636                                 vport = phba->pport;
 637                         else
 638                                 vport = vports[i];
 639                         if (vport == NULL)
 640                                 break;
 641                         spin_lock_irq(&vport->work_port_lock);
 642                         work_port_events = vport->work_port_events;
 643                         vport->work_port_events &= ~work_port_events;
 644                         spin_unlock_irq(&vport->work_port_lock);
 645                         if (work_port_events & WORKER_DISC_TMO)
 646                                 lpfc_disc_timeout_handler(vport);
 647                         if (work_port_events & WORKER_ELS_TMO)
 648                                 lpfc_els_timeout_handler(vport);
 649                         if (work_port_events & WORKER_HB_TMO)
 650                                 lpfc_hb_timeout_handler(phba);
 651                         if (work_port_events & WORKER_MBOX_TMO)
 652                                 lpfc_mbox_timeout_handler(phba);
 653                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
 654                                 lpfc_unblock_fabric_iocbs(phba);
 655                         if (work_port_events & WORKER_FDMI_TMO)
 656                                 lpfc_fdmi_timeout_handler(vport);
 657                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
 658                                 lpfc_ramp_down_queue_handler(phba);
 659                         if (work_port_events & WORKER_RAMP_UP_QUEUE)
 660                                 lpfc_ramp_up_queue_handler(phba);
 661                         if (work_port_events & WORKER_DELAYED_DISC_TMO)
 662                                 lpfc_delayed_disc_timeout_handler(vport);
 663                 }
 664         lpfc_destroy_vport_work_array(phba, vports);
 665
 666         pring = &phba->sli.ring[LPFC_ELS_RING];
 667         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
 668         status >>= (4*LPFC_ELS_RING);
 669         if ((status & HA_RXMASK) ||
 670             (pring->flag & LPFC_DEFERRED_RING_EVENT) ||
 671             (phba->hba_flag & HBA_SP_QUEUE_EVT)) {
 672                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
 673                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
 674                         /* Set the lpfc data pending flag */
 675                         set_bit(LPFC_DATA_READY, &phba->data_flags);
 676                 } else {
 677                         pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
 678                         lpfc_sli_handle_slow_ring_event(phba, pring,
 679                                                         (status &
 680                                                          HA_RXMASK));
 681                 }
 682                 if ((phba->sli_rev == LPFC_SLI_REV4) && pring->txq_cnt)
 683                         lpfc_drain_txq(phba);
 684                 /*
 685                  * Turn on Ring interrupts
 686                  */
 687                 if (phba->sli_rev <= LPFC_SLI_REV3) {
 688                         spin_lock_irq(&phba->hbalock);
 689                         control = readl(phba->HCregaddr);
 690                         if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
 691                                 lpfc_debugfs_slow_ring_trc(phba,
 692                                         "WRK Enable ring: cntl:x%x hacopy:x%x",
 693                                         control, ha_copy, 0);
 694
 695                                 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
 696                                 writel(control, phba->HCregaddr);
 697                                 readl(phba->HCregaddr); /* flush */
 698                         } else {
 699                                 lpfc_debugfs_slow_ring_trc(phba,
 700                                         "WRK Ring ok:     cntl:x%x hacopy:x%x",
 701                                         control, ha_copy, 0);
 702                         }
 703                         spin_unlock_irq(&phba->hbalock);
 704                 }
 705         }
 706         lpfc_work_list_done(phba);
 707 }
 708
 709 int
 710 lpfc_do_work(void *p)
 711 {
 712         struct lpfc_hba *phba = p;
 713         int rc;
 714
 715         set_user_nice(current, -20);
 716         phba->data_flags = 0;
 717
 718         while (!kthread_should_stop()) {
 719                 /* wait and check worker queue activities */
 720                 rc = wait_event_interruptible(phba->work_waitq,
 721                                         (test_and_clear_bit(LPFC_DATA_READY,
 722                                                             &phba->data_flags)
 723                                          || kthread_should_stop()));
 724                 /* Signal wakeup shall terminate the worker thread */
 725                 if (rc) {
 726                         lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
 727                                         "0433 Wakeup on signal: rc=x%x\n", rc);
 728                         break;
 729                 }
 730
 731                 /* Attend pending lpfc data processing */
 732                 lpfc_work_done(phba);
 733         }
 734         phba->worker_thread = NULL;
 735         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
 736                         "0432 Worker thread stopped.\n");
 737         return 0;
 738 }
 739
 740 /*
 741  * This is only called to handle FC worker events. Since this a rare
 742  * occurrence, we allocate a struct lpfc_work_evt structure here instead of
 743  * embedding it in the IOCB.
 744  */
 745 int
 746 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
 747                       uint32_t evt)
 748 {
 749         struct lpfc_work_evt  *evtp;
 750         unsigned long flags;
 751
 752         /*
 753          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
 754          * be queued to worker thread for processing
 755          */
 756         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
 757         if (!evtp)
 758                 return 0;
 759
 760         evtp->evt_arg1  = arg1;
 761         evtp->evt_arg2  = arg2;
 762         evtp->evt       = evt;
 763
 764         spin_lock_irqsave(&phba->hbalock, flags);
 765         list_add_tail(&evtp->evt_listp, &phba->work_list);
 766         spin_unlock_irqrestore(&phba->hbalock, flags);
 767
 768         lpfc_worker_wake_up(phba);
 769
 770         return 1;
 771 }
 772
 773 void
 774 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
 775 {
 776         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 777         struct lpfc_hba  *phba = vport->phba;
 778         struct lpfc_nodelist *ndlp, *next_ndlp;
 779         int  rc;
 780
 781         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
 782                 if (!NLP_CHK_NODE_ACT(ndlp))
 783                         continue;
 784                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 785                         continue;
 786                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
 787                         ((vport->port_type == LPFC_NPIV_PORT) &&
 788                         (ndlp->nlp_DID == NameServer_DID)))
 789                         lpfc_unreg_rpi(vport, ndlp);
 790
 791                 /* Leave Fabric nodes alone on link down */
 792                 if ((phba->sli_rev < LPFC_SLI_REV4) &&
 793                     (!remove && ndlp->nlp_type & NLP_FABRIC))
 794                         continue;
 795                 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
 796                                              remove
 797                                              ? NLP_EVT_DEVICE_RM
 798                                              : NLP_EVT_DEVICE_RECOVERY);
 799         }
 800         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
 801                 if (phba->sli_rev == LPFC_SLI_REV4)
 802                         lpfc_sli4_unreg_all_rpis(vport);
 803                 lpfc_mbx_unreg_vpi(vport);
 804                 spin_lock_irq(shost->host_lock);
 805                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
 806                 spin_unlock_irq(shost->host_lock);
 807         }
 808 }
 809
 810 void
 811 lpfc_port_link_failure(struct lpfc_vport *vport)
 812 {
 813         lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
 814
 815         /* Cleanup any outstanding received buffers */
 816         lpfc_cleanup_rcv_buffers(vport);
 817
 818         /* Cleanup any outstanding RSCN activity */
 819         lpfc_els_flush_rscn(vport);
 820
 821         /* Cleanup any outstanding ELS commands */
 822         lpfc_els_flush_cmd(vport);
 823
 824         lpfc_cleanup_rpis(vport, 0);
 825
 826         /* Turn off discovery timer if its running */
 827         lpfc_can_disctmo(vport);
 828 }
 829
 830 void
 831 lpfc_linkdown_port(struct lpfc_vport *vport)
 832 {
 833         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 834
 835         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
 836
 837         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 838                 "Link Down:       state:x%x rtry:x%x flg:x%x",
 839                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
 840
 841         lpfc_port_link_failure(vport);
 842
 843         /* Stop delayed Nport discovery */
 844         spin_lock_irq(shost->host_lock);
 845         vport->fc_flag &= ~FC_DISC_DELAYED;
 846         spin_unlock_irq(shost->host_lock);
 847         del_timer_sync(&vport->delayed_disc_tmo);
 848 }
 849
 850 int
 851 lpfc_linkdown(struct lpfc_hba *phba)
 852 {
 853         struct lpfc_vport *vport = phba->pport;
 854         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 855         struct lpfc_vport **vports;
 856         LPFC_MBOXQ_t          *mb;
 857         int i;
 858
 859         if (phba->link_state == LPFC_LINK_DOWN)
 860                 return 0;
 861
 862         /* Block all SCSI stack I/Os */
 863         lpfc_scsi_dev_block(phba);
 864
 865         spin_lock_irq(&phba->hbalock);
 866         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
 867         spin_unlock_irq(&phba->hbalock);
 868         if (phba->link_state > LPFC_LINK_DOWN) {
 869                 phba->link_state = LPFC_LINK_DOWN;
 870                 spin_lock_irq(shost->host_lock);
 871                 phba->pport->fc_flag &= ~FC_LBIT;
 872                 spin_unlock_irq(shost->host_lock);
 873         }
 874         vports = lpfc_create_vport_work_array(phba);
 875         if (vports != NULL)
 876                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
 877                         /* Issue a LINK DOWN event to all nodes */
 878                         lpfc_linkdown_port(vports[i]);
 879                 }
 880         lpfc_destroy_vport_work_array(phba, vports);
 881         /* Clean up any firmware default rpi's */
 882         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 883         if (mb) {
 884                 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb);
 885                 mb->vport = vport;
 886                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 887                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 888                     == MBX_NOT_FINISHED) {
 889                         mempool_free(mb, phba->mbox_mem_pool);
 890                 }
 891         }
 892
 893         /* Setup myDID for link up if we are in pt2pt mode */
 894         if (phba->pport->fc_flag & FC_PT2PT) {
 895                 phba->pport->fc_myDID = 0;
 896                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 897                 if (mb) {
 898                         lpfc_config_link(phba, mb);
 899                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 900                         mb->vport = vport;
 901                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 902                             == MBX_NOT_FINISHED) {
 903                                 mempool_free(mb, phba->mbox_mem_pool);
 904                         }
 905                 }
 906                 spin_lock_irq(shost->host_lock);
 907                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
 908                 spin_unlock_irq(shost->host_lock);
 909         }
 910
 911         return 0;
 912 }
 913
 914 static void
 915 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
 916 {
 917         struct lpfc_nodelist *ndlp;
 918
 919         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
 920                 if (!NLP_CHK_NODE_ACT(ndlp))
 921                         continue;
 922                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 923                         continue;
 924                 if (ndlp->nlp_type & NLP_FABRIC) {
 925                         /* On Linkup its safe to clean up the ndlp
 926                          * from Fabric connections.
 927                          */
 928                         if (ndlp->nlp_DID != Fabric_DID)
 929                                 lpfc_unreg_rpi(vport, ndlp);
 930                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 931                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
 932                         /* Fail outstanding IO now since device is
 933                          * marked for PLOGI.
 934                          */
 935                         lpfc_unreg_rpi(vport, ndlp);
 936                 }
 937         }
 938 }
 939
 940 static void
 941 lpfc_linkup_port(struct lpfc_vport *vport)
 942 {
 943         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 944         struct lpfc_hba  *phba = vport->phba;
 945
 946         if ((vport->load_flag & FC_UNLOADING) != 0)
 947                 return;
 948
 949         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 950                 "Link Up:         top:x%x speed:x%x flg:x%x",
 951                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
 952
 953         /* If NPIV is not enabled, only bring the physical port up */
 954         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 955                 (vport != phba->pport))
 956                 return;
 957
 958         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
 959
 960         spin_lock_irq(shost->host_lock);
 961         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
 962                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
 963         vport->fc_flag |= FC_NDISC_ACTIVE;
 964         vport->fc_ns_retry = 0;
 965         spin_unlock_irq(shost->host_lock);
 966
 967         if (vport->fc_flag & FC_LBIT)
 968                 lpfc_linkup_cleanup_nodes(vport);
 969
 970 }
 971
 972 static int
 973 lpfc_linkup(struct lpfc_hba *phba)
 974 {
 975         struct lpfc_vport **vports;
 976         int i;
 977
 978         lpfc_cleanup_wt_rrqs(phba);
 979         phba->link_state = LPFC_LINK_UP;
 980
 981         /* Unblock fabric iocbs if they are blocked */
 982         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
 983         del_timer_sync(&phba->fabric_block_timer);
 984
 985         vports = lpfc_create_vport_work_array(phba);
 986         if (vports != NULL)
 987                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
 988                         lpfc_linkup_port(vports[i]);
 989         lpfc_destroy_vport_work_array(phba, vports);
 990         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 991             (phba->sli_rev < LPFC_SLI_REV4))
 992                 lpfc_issue_clear_la(phba, phba->pport);
 993
 994         return 0;
 995 }
 996
 997 /*
 998  * This routine handles processing a CLEAR_LA mailbox
 999  * command upon completion. It is setup in the LPFC_MBOXQ
1000  * as the completion routine when the command is
1001  * handed off to the SLI layer.
1002  */
1003 static void
1004 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1005 {
1006         struct lpfc_vport *vport = pmb->vport;
1007         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1008         struct lpfc_sli   *psli = &phba->sli;
1009         MAILBOX_t *mb = &pmb->u.mb;
1010         uint32_t control;
1011
1012         /* Since we don't do discovery right now, turn these off here */
1013         psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
1014         psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
1015         psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
1016
1017         /* Check for error */
1018         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
1019                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
1020                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1021                                  "0320 CLEAR_LA mbxStatus error x%x hba "
1022                                  "state x%x\n",
1023                                  mb->mbxStatus, vport->port_state);
1024                 phba->link_state = LPFC_HBA_ERROR;
1025                 goto out;
1026         }
1027
1028         if (vport->port_type == LPFC_PHYSICAL_PORT)
1029                 phba->link_state = LPFC_HBA_READY;
1030
1031         spin_lock_irq(&phba->hbalock);
1032         psli->sli_flag |= LPFC_PROCESS_LA;
1033         control = readl(phba->HCregaddr);
1034         control |= HC_LAINT_ENA;
1035         writel(control, phba->HCregaddr);
1036         readl(phba->HCregaddr); /* flush */
1037         spin_unlock_irq(&phba->hbalock);
1038         mempool_free(pmb, phba->mbox_mem_pool);
1039         return;
1040
1041 out:
1042         /* Device Discovery completes */
1043         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1044                          "0225 Device Discovery completes\n");
1045         mempool_free(pmb, phba->mbox_mem_pool);
1046
1047         spin_lock_irq(shost->host_lock);
1048         vport->fc_flag &= ~FC_ABORT_DISCOVERY;
1049         spin_unlock_irq(shost->host_lock);
1050
1051         lpfc_can_disctmo(vport);
1052
1053         /* turn on Link Attention interrupts */
1054
1055         spin_lock_irq(&phba->hbalock);
1056         psli->sli_flag |= LPFC_PROCESS_LA;
1057         control = readl(phba->HCregaddr);
1058         control |= HC_LAINT_ENA;
1059         writel(control, phba->HCregaddr);
1060         readl(phba->HCregaddr); /* flush */
1061         spin_unlock_irq(&phba->hbalock);
1062
1063         return;
1064 }
1065
1066
1067 static void
1068 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1069 {
1070         struct lpfc_vport *vport = pmb->vport;
1071
1072         if (pmb->u.mb.mbxStatus)
1073                 goto out;
1074
1075         mempool_free(pmb, phba->mbox_mem_pool);
1076
1077         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
1078             vport->fc_flag & FC_PUBLIC_LOOP &&
1079             !(vport->fc_flag & FC_LBIT)) {
1080                         /* Need to wait for FAN - use discovery timer
1081                          * for timeout.  port_state is identically
1082                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
1083                          */
1084                         lpfc_set_disctmo(vport);
1085                         return;
1086         }
1087
1088         /* Start discovery by sending a FLOGI. port_state is identically
1089          * LPFC_FLOGI while waiting for FLOGI cmpl
1090          */
1091         if (vport->port_state != LPFC_FLOGI)
1092                 lpfc_initial_flogi(vport);
1093         return;
1094
1095 out:
1096         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1097                          "0306 CONFIG_LINK mbxStatus error x%x "
1098                          "HBA state x%x\n",
1099                          pmb->u.mb.mbxStatus, vport->port_state);
1100         mempool_free(pmb, phba->mbox_mem_pool);
1101
1102         lpfc_linkdown(phba);
1103
1104         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1105                          "0200 CONFIG_LINK bad hba state x%x\n",
1106                          vport->port_state);
1107
1108         lpfc_issue_clear_la(phba, vport);
1109         return;
1110 }
1111
1112 /**
1113  * lpfc_sli4_clear_fcf_rr_bmask
1114  * @phba pointer to the struct lpfc_hba for this port.
1115  * This fucnction resets the round robin bit mask and clears the
1116  * fcf priority list. The list deletions are done while holding the
1117  * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared
1118  * from the lpfc_fcf_pri record.
1119  **/
1120 void
1121 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba)
1122 {
1123         struct lpfc_fcf_pri *fcf_pri;
1124         struct lpfc_fcf_pri *next_fcf_pri;
1125         memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask));
1126         spin_lock_irq(&phba->hbalock);
1127         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
1128                                 &phba->fcf.fcf_pri_list, list) {
1129                 list_del_init(&fcf_pri->list);
1130                 fcf_pri->fcf_rec.flag = 0;
1131         }
1132         spin_unlock_irq(&phba->hbalock);
1133 }
1134 static void
1135 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1136 {
1137         struct lpfc_vport *vport = mboxq->vport;
1138
1139         if (mboxq->u.mb.mbxStatus) {
1140                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1141                          "2017 REG_FCFI mbxStatus error x%x "
1142                          "HBA state x%x\n",
1143                          mboxq->u.mb.mbxStatus, vport->port_state);
1144                 goto fail_out;
1145         }
1146
1147         /* Start FCoE discovery by sending a FLOGI. */
1148         phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1149         /* Set the FCFI registered flag */
1150         spin_lock_irq(&phba->hbalock);
1151         phba->fcf.fcf_flag |= FCF_REGISTERED;
1152         spin_unlock_irq(&phba->hbalock);
1153
1154         /* If there is a pending FCoE event, restart FCF table scan. */
1155         if ((!(phba->hba_flag & FCF_RR_INPROG)) &&
1156                 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF))
1157                 goto fail_out;
1158
1159         /* Mark successful completion of FCF table scan */
1160         spin_lock_irq(&phba->hbalock);
1161         phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1162         phba->hba_flag &= ~FCF_TS_INPROG;
1163         if (vport->port_state != LPFC_FLOGI) {
1164                 phba->hba_flag |= FCF_RR_INPROG;
1165                 spin_unlock_irq(&phba->hbalock);
1166                 lpfc_issue_init_vfi(vport);
1167                 goto out;
1168         }
1169         spin_unlock_irq(&phba->hbalock);
1170         goto out;
1171
1172 fail_out:
1173         spin_lock_irq(&phba->hbalock);
1174         phba->hba_flag &= ~FCF_RR_INPROG;
1175         spin_unlock_irq(&phba->hbalock);
1176 out:
1177         mempool_free(mboxq, phba->mbox_mem_pool);
1178 }
1179
1180 /**
1181  * lpfc_fab_name_match - Check if the fcf fabric name match.
1182  * @fab_name: pointer to fabric name.
1183  * @new_fcf_record: pointer to fcf record.
1184  *
1185  * This routine compare the fcf record's fabric name with provided
1186  * fabric name. If the fabric name are identical this function
1187  * returns 1 else return 0.
1188  **/
1189 static uint32_t
1190 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1191 {
1192         if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1193                 return 0;
1194         if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1195                 return 0;
1196         if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1197                 return 0;
1198         if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1199                 return 0;
1200         if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1201                 return 0;
1202         if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1203                 return 0;
1204         if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1205                 return 0;
1206         if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1207                 return 0;
1208         return 1;
1209 }
1210
1211 /**
1212  * lpfc_sw_name_match - Check if the fcf switch name match.
1213  * @fab_name: pointer to fabric name.
1214  * @new_fcf_record: pointer to fcf record.
1215  *
1216  * This routine compare the fcf record's switch name with provided
1217  * switch name. If the switch name are identical this function
1218  * returns 1 else return 0.
1219  **/
1220 static uint32_t
1221 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1222 {
1223         if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1224                 return 0;
1225         if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1226                 return 0;
1227         if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1228                 return 0;
1229         if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1230                 return 0;
1231         if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1232                 return 0;
1233         if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1234                 return 0;
1235         if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1236                 return 0;
1237         if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1238                 return 0;
1239         return 1;
1240 }
1241
1242 /**
1243  * lpfc_mac_addr_match - Check if the fcf mac address match.
1244  * @mac_addr: pointer to mac address.
1245  * @new_fcf_record: pointer to fcf record.
1246  *
1247  * This routine compare the fcf record's mac address with HBA's
1248  * FCF mac address. If the mac addresses are identical this function
1249  * returns 1 else return 0.
1250  **/
1251 static uint32_t
1252 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1253 {
1254         if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1255                 return 0;
1256         if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1257                 return 0;
1258         if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1259                 return 0;
1260         if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1261                 return 0;
1262         if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1263                 return 0;
1264         if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1265                 return 0;
1266         return 1;
1267 }
1268
1269 static bool
1270 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1271 {
1272         return (curr_vlan_id == new_vlan_id);
1273 }
1274
1275 /**
1276  * lpfc_update_fcf_record - Update driver fcf record
1277  * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record.
1278  * @phba: pointer to lpfc hba data structure.
1279  * @fcf_index: Index for the lpfc_fcf_record.
1280  * @new_fcf_record: pointer to hba fcf record.
1281  *
1282  * This routine updates the driver FCF priority record from the new HBA FCF
1283  * record. This routine is called with the host lock held.
1284  **/
1285 static void
1286 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index,
1287                                  struct fcf_record *new_fcf_record
1288                                  )
1289 {
1290         struct lpfc_fcf_pri *fcf_pri;
1291
1292         fcf_pri = &phba->fcf.fcf_pri[fcf_index];
1293         fcf_pri->fcf_rec.fcf_index = fcf_index;
1294         /* FCF record priority */
1295         fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
1296
1297 }
1298
1299 /**
1300  * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1301  * @fcf: pointer to driver fcf record.
1302  * @new_fcf_record: pointer to fcf record.
1303  *
1304  * This routine copies the FCF information from the FCF
1305  * record to lpfc_hba data structure.
1306  **/
1307 static void
1308 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1309                      struct fcf_record *new_fcf_record)
1310 {
1311         /* Fabric name */
1312         fcf_rec->fabric_name[0] =
1313                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1314         fcf_rec->fabric_name[1] =
1315                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1316         fcf_rec->fabric_name[2] =
1317                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1318         fcf_rec->fabric_name[3] =
1319                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1320         fcf_rec->fabric_name[4] =
1321                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1322         fcf_rec->fabric_name[5] =
1323                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1324         fcf_rec->fabric_name[6] =
1325                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1326         fcf_rec->fabric_name[7] =
1327                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1328         /* Mac address */
1329         fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1330         fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1331         fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1332         fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1333         fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1334         fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1335         /* FCF record index */
1336         fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1337         /* FCF record priority */
1338         fcf_rec->priority = new_fcf_record->fip_priority;
1339         /* Switch name */
1340         fcf_rec->switch_name[0] =
1341                 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1342         fcf_rec->switch_name[1] =
1343                 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1344         fcf_rec->switch_name[2] =
1345                 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1346         fcf_rec->switch_name[3] =
1347                 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1348         fcf_rec->switch_name[4] =
1349                 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1350         fcf_rec->switch_name[5] =
1351                 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1352         fcf_rec->switch_name[6] =
1353                 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1354         fcf_rec->switch_name[7] =
1355                 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1356 }
1357
1358 /**
1359  * lpfc_update_fcf_record - Update driver fcf record
1360  * @phba: pointer to lpfc hba data structure.
1361  * @fcf_rec: pointer to driver fcf record.
1362  * @new_fcf_record: pointer to hba fcf record.
1363  * @addr_mode: address mode to be set to the driver fcf record.
1364  * @vlan_id: vlan tag to be set to the driver fcf record.
1365  * @flag: flag bits to be set to the driver fcf record.
1366  *
1367  * This routine updates the driver FCF record from the new HBA FCF record
1368  * together with the address mode, vlan_id, and other informations. This
1369  * routine is called with the host lock held.
1370  **/
1371 static void
1372 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1373                        struct fcf_record *new_fcf_record, uint32_t addr_mode,
1374                        uint16_t vlan_id, uint32_t flag)
1375 {
1376         /* Copy the fields from the HBA's FCF record */
1377         lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1378         /* Update other fields of driver FCF record */
1379         fcf_rec->addr_mode = addr_mode;
1380         fcf_rec->vlan_id = vlan_id;
1381         fcf_rec->flag |= (flag | RECORD_VALID);
1382         __lpfc_update_fcf_record_pri(phba,
1383                 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record),
1384                                  new_fcf_record);
1385 }
1386
1387 /**
1388  * lpfc_register_fcf - Register the FCF with hba.
1389  * @phba: pointer to lpfc hba data structure.
1390  *
1391  * This routine issues a register fcfi mailbox command to register
1392  * the fcf with HBA.
1393  **/
1394 static void
1395 lpfc_register_fcf(struct lpfc_hba *phba)
1396 {
1397         LPFC_MBOXQ_t *fcf_mbxq;
1398         int rc;
1399
1400         spin_lock_irq(&phba->hbalock);
1401         /* If the FCF is not available do nothing. */
1402         if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1403                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1404                 spin_unlock_irq(&phba->hbalock);
1405                 return;
1406         }
1407
1408         /* The FCF is already registered, start discovery */
1409         if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1410                 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1411                 phba->hba_flag &= ~FCF_TS_INPROG;
1412                 if (phba->pport->port_state != LPFC_FLOGI) {
1413                         phba->hba_flag |= FCF_RR_INPROG;
1414                         spin_unlock_irq(&phba->hbalock);
1415                         lpfc_initial_flogi(phba->pport);
1416                         return;
1417                 }
1418                 spin_unlock_irq(&phba->hbalock);
1419                 return;
1420         }
1421         spin_unlock_irq(&phba->hbalock);
1422
1423         fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1424         if (!fcf_mbxq) {
1425                 spin_lock_irq(&phba->hbalock);
1426                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1427                 spin_unlock_irq(&phba->hbalock);
1428                 return;
1429         }
1430
1431         lpfc_reg_fcfi(phba, fcf_mbxq);
1432         fcf_mbxq->vport = phba->pport;
1433         fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1434         rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1435         if (rc == MBX_NOT_FINISHED) {
1436                 spin_lock_irq(&phba->hbalock);
1437                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1438                 spin_unlock_irq(&phba->hbalock);
1439                 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1440         }
1441
1442         return;
1443 }
1444
1445 /**
1446  * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1447  * @phba: pointer to lpfc hba data structure.
1448  * @new_fcf_record: pointer to fcf record.
1449  * @boot_flag: Indicates if this record used by boot bios.
1450  * @addr_mode: The address mode to be used by this FCF
1451  * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1452  *
1453  * This routine compare the fcf record with connect list obtained from the
1454  * config region to decide if this FCF can be used for SAN discovery. It returns
1455  * 1 if this record can be used for SAN discovery else return zero. If this FCF
1456  * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1457  * is used by boot bios and addr_mode will indicate the addressing mode to be
1458  * used for this FCF when the function returns.
1459  * If the FCF record need to be used with a particular vlan id, the vlan is
1460  * set in the vlan_id on return of the function. If not VLAN tagging need to
1461  * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
1462  **/
1463 static int
1464 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1465                         struct fcf_record *new_fcf_record,
1466                         uint32_t *boot_flag, uint32_t *addr_mode,
1467                         uint16_t *vlan_id)
1468 {
1469         struct lpfc_fcf_conn_entry *conn_entry;
1470         int i, j, fcf_vlan_id = 0;
1471
1472         /* Find the lowest VLAN id in the FCF record */
1473         for (i = 0; i < 512; i++) {
1474                 if (new_fcf_record->vlan_bitmap[i]) {
1475                         fcf_vlan_id = i * 8;
1476                         j = 0;
1477                         while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1478                                 j++;
1479                                 fcf_vlan_id++;
1480                         }
1481                         break;
1482                 }
1483         }
1484
1485         /* If FCF not available return 0 */
1486         if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1487                 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record))
1488                 return 0;
1489
1490         if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1491                 *boot_flag = 0;
1492                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1493                                 new_fcf_record);
1494                 if (phba->valid_vlan)
1495                         *vlan_id = phba->vlan_id;
1496                 else
1497                         *vlan_id = LPFC_FCOE_NULL_VID;
1498                 return 1;
1499         }
1500
1501         /*
1502          * If there are no FCF connection table entry, driver connect to all
1503          * FCFs.
1504          */
1505         if (list_empty(&phba->fcf_conn_rec_list)) {
1506                 *boot_flag = 0;
1507                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1508                         new_fcf_record);
1509
1510                 /*
1511                  * When there are no FCF connect entries, use driver's default
1512                  * addressing mode - FPMA.
1513                  */
1514                 if (*addr_mode & LPFC_FCF_FPMA)
1515                         *addr_mode = LPFC_FCF_FPMA;
1516
1517                 /* If FCF record report a vlan id use that vlan id */
1518                 if (fcf_vlan_id)
1519                         *vlan_id = fcf_vlan_id;
1520                 else
1521                         *vlan_id = LPFC_FCOE_NULL_VID;
1522                 return 1;
1523         }
1524
1525         list_for_each_entry(conn_entry,
1526                             &phba->fcf_conn_rec_list, list) {
1527                 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1528                         continue;
1529
1530                 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1531                         !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1532                                              new_fcf_record))
1533                         continue;
1534                 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
1535                         !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
1536                                             new_fcf_record))
1537                         continue;
1538                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1539                         /*
1540                          * If the vlan bit map does not have the bit set for the
1541                          * vlan id to be used, then it is not a match.
1542                          */
1543                         if (!(new_fcf_record->vlan_bitmap
1544                                 [conn_entry->conn_rec.vlan_tag / 8] &
1545                                 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
1546                                 continue;
1547                 }
1548
1549                 /*
1550                  * If connection record does not support any addressing mode,
1551                  * skip the FCF record.
1552                  */
1553                 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
1554                         & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
1555                         continue;
1556
1557                 /*
1558                  * Check if the connection record specifies a required
1559                  * addressing mode.
1560                  */
1561                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1562                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
1563
1564                         /*
1565                          * If SPMA required but FCF not support this continue.
1566                          */
1567                         if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1568                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1569                                         new_fcf_record) & LPFC_FCF_SPMA))
1570                                 continue;
1571
1572                         /*
1573                          * If FPMA required but FCF not support this continue.
1574                          */
1575                         if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1576                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1577                                 new_fcf_record) & LPFC_FCF_FPMA))
1578                                 continue;
1579                 }
1580
1581                 /*
1582                  * This fcf record matches filtering criteria.
1583                  */
1584                 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
1585                         *boot_flag = 1;
1586                 else
1587                         *boot_flag = 0;
1588
1589                 /*
1590                  * If user did not specify any addressing mode, or if the
1591                  * preferred addressing mode specified by user is not supported
1592                  * by FCF, allow fabric to pick the addressing mode.
1593                  */
1594                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1595                                 new_fcf_record);
1596                 /*
1597                  * If the user specified a required address mode, assign that
1598                  * address mode
1599                  */
1600                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1601                         (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
1602                         *addr_mode = (conn_entry->conn_rec.flags &
1603                                 FCFCNCT_AM_SPMA) ?
1604                                 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
1605                 /*
1606                  * If the user specified a preferred address mode, use the
1607                  * addr mode only if FCF support the addr_mode.
1608                  */
1609                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1610                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1611                         (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1612                         (*addr_mode & LPFC_FCF_SPMA))
1613                                 *addr_mode = LPFC_FCF_SPMA;
1614                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1615                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1616                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1617                         (*addr_mode & LPFC_FCF_FPMA))
1618                                 *addr_mode = LPFC_FCF_FPMA;
1619
1620                 /* If matching connect list has a vlan id, use it */
1621                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
1622                         *vlan_id = conn_entry->conn_rec.vlan_tag;
1623                 /*
1624                  * If no vlan id is specified in connect list, use the vlan id
1625                  * in the FCF record
1626                  */
1627                 else if (fcf_vlan_id)
1628                         *vlan_id = fcf_vlan_id;
1629                 else
1630                         *vlan_id = LPFC_FCOE_NULL_VID;
1631
1632                 return 1;
1633         }
1634
1635         return 0;
1636 }
1637
1638 /**
1639  * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
1640  * @phba: pointer to lpfc hba data structure.
1641  * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
1642  *
1643  * This function check if there is any fcoe event pending while driver
1644  * scan FCF entries. If there is any pending event, it will restart the
1645  * FCF saning and return 1 else return 0.
1646  */
1647 int
1648 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
1649 {
1650         /*
1651          * If the Link is up and no FCoE events while in the
1652          * FCF discovery, no need to restart FCF discovery.
1653          */
1654         if ((phba->link_state  >= LPFC_LINK_UP) &&
1655             (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
1656                 return 0;
1657
1658         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1659                         "2768 Pending link or FCF event during current "
1660                         "handling of the previous event: link_state:x%x, "
1661                         "evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
1662                         phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
1663                         phba->fcoe_eventtag);
1664
1665         spin_lock_irq(&phba->hbalock);
1666         phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
1667         spin_unlock_irq(&phba->hbalock);
1668
1669         if (phba->link_state >= LPFC_LINK_UP) {
1670                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1671                                 "2780 Restart FCF table scan due to "
1672                                 "pending FCF event:evt_tag_at_scan:x%x, "
1673                                 "evt_tag_current:x%x\n",
1674                                 phba->fcoe_eventtag_at_fcf_scan,
1675                                 phba->fcoe_eventtag);
1676                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
1677         } else {
1678                 /*
1679                  * Do not continue FCF discovery and clear FCF_TS_INPROG
1680                  * flag
1681                  */
1682                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1683                                 "2833 Stop FCF discovery process due to link "
1684                                 "state change (x%x)\n", phba->link_state);
1685                 spin_lock_irq(&phba->hbalock);
1686                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1687                 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
1688                 spin_unlock_irq(&phba->hbalock);
1689         }
1690
1691         /* Unregister the currently registered FCF if required */
1692         if (unreg_fcf) {
1693                 spin_lock_irq(&phba->hbalock);
1694                 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
1695                 spin_unlock_irq(&phba->hbalock);
1696                 lpfc_sli4_unregister_fcf(phba);
1697         }
1698         return 1;
1699 }
1700
1701 /**
1702  * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
1703  * @phba: pointer to lpfc hba data structure.
1704  * @fcf_cnt: number of eligible fcf record seen so far.
1705  *
1706  * This function makes an running random selection decision on FCF record to
1707  * use through a sequence of @fcf_cnt eligible FCF records with equal
1708  * probability. To perform integer manunipulation of random numbers with
1709  * size unit32_t, the lower 16 bits of the 32-bit random number returned
1710  * from random32() are taken as the random random number generated.
1711  *
1712  * Returns true when outcome is for the newly read FCF record should be
1713  * chosen; otherwise, return false when outcome is for keeping the previously
1714  * chosen FCF record.
1715  **/
1716 static bool
1717 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
1718 {
1719         uint32_t rand_num;
1720
1721         /* Get 16-bit uniform random number */
1722         rand_num = (0xFFFF & random32());
1723
1724         /* Decision with probability 1/fcf_cnt */
1725         if ((fcf_cnt * rand_num) < 0xFFFF)
1726                 return true;
1727         else
1728                 return false;
1729 }
1730
1731 /**
1732  * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
1733  * @phba: pointer to lpfc hba data structure.
1734  * @mboxq: pointer to mailbox object.
1735  * @next_fcf_index: pointer to holder of next fcf index.
1736  *
1737  * This routine parses the non-embedded fcf mailbox command by performing the
1738  * necessarily error checking, non-embedded read FCF record mailbox command
1739  * SGE parsing, and endianness swapping.
1740  *
1741  * Returns the pointer to the new FCF record in the non-embedded mailbox
1742  * command DMA memory if successfully, other NULL.
1743  */
1744 static struct fcf_record *
1745 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
1746                              uint16_t *next_fcf_index)
1747 {
1748         void *virt_addr;
1749         dma_addr_t phys_addr;
1750         struct lpfc_mbx_sge sge;
1751         struct lpfc_mbx_read_fcf_tbl *read_fcf;
1752         uint32_t shdr_status, shdr_add_status;
1753         union lpfc_sli4_cfg_shdr *shdr;
1754         struct fcf_record *new_fcf_record;
1755
1756         /* Get the first SGE entry from the non-embedded DMA memory. This
1757          * routine only uses a single SGE.
1758          */
1759         lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
1760         phys_addr = getPaddr(sge.pa_hi, sge.pa_lo);
1761         if (unlikely(!mboxq->sge_array)) {
1762                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1763                                 "2524 Failed to get the non-embedded SGE "
1764                                 "virtual address\n");
1765                 return NULL;
1766         }
1767         virt_addr = mboxq->sge_array->addr[0];
1768
1769         shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
1770         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
1771         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
1772         if (shdr_status || shdr_add_status) {
1773                 if (shdr_status == STATUS_FCF_TABLE_EMPTY)
1774                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1775                                         "2726 READ_FCF_RECORD Indicates empty "
1776                                         "FCF table.\n");
1777                 else
1778                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1779                                         "2521 READ_FCF_RECORD mailbox failed "
1780                                         "with status x%x add_status x%x, "
1781                                         "mbx\n", shdr_status, shdr_add_status);
1782                 return NULL;
1783         }
1784
1785         /* Interpreting the returned information of the FCF record */
1786         read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
1787         lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
1788                               sizeof(struct lpfc_mbx_read_fcf_tbl));
1789         *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
1790         new_fcf_record = (struct fcf_record *)(virt_addr +
1791                           sizeof(struct lpfc_mbx_read_fcf_tbl));
1792         lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
1793                                 offsetof(struct fcf_record, vlan_bitmap));
1794         new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
1795         new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
1796
1797         return new_fcf_record;
1798 }
1799
1800 /**
1801  * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
1802  * @phba: pointer to lpfc hba data structure.
1803  * @fcf_record: pointer to the fcf record.
1804  * @vlan_id: the lowest vlan identifier associated to this fcf record.
1805  * @next_fcf_index: the index to the next fcf record in hba's fcf table.
1806  *
1807  * This routine logs the detailed FCF record if the LOG_FIP loggin is
1808  * enabled.
1809  **/
1810 static void
1811 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
1812                               struct fcf_record *fcf_record,
1813                               uint16_t vlan_id,
1814                               uint16_t next_fcf_index)
1815 {
1816         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1817                         "2764 READ_FCF_RECORD:\n"
1818                         "\tFCF_Index     : x%x\n"
1819                         "\tFCF_Avail     : x%x\n"
1820                         "\tFCF_Valid     : x%x\n"
1821                         "\tFIP_Priority  : x%x\n"
1822                         "\tMAC_Provider  : x%x\n"
1823                         "\tLowest VLANID : x%x\n"
1824                         "\tFCF_MAC Addr  : x%x:%x:%x:%x:%x:%x\n"
1825                         "\tFabric_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1826                         "\tSwitch_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1827                         "\tNext_FCF_Index: x%x\n",
1828                         bf_get(lpfc_fcf_record_fcf_index, fcf_record),
1829                         bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
1830                         bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
1831                         fcf_record->fip_priority,
1832                         bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
1833                         vlan_id,
1834                         bf_get(lpfc_fcf_record_mac_0, fcf_record),
1835                         bf_get(lpfc_fcf_record_mac_1, fcf_record),
1836                         bf_get(lpfc_fcf_record_mac_2, fcf_record),
1837                         bf_get(lpfc_fcf_record_mac_3, fcf_record),
1838                         bf_get(lpfc_fcf_record_mac_4, fcf_record),
1839                         bf_get(lpfc_fcf_record_mac_5, fcf_record),
1840                         bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
1841                         bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
1842                         bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
1843                         bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
1844                         bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
1845                         bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
1846                         bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
1847                         bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
1848                         bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
1849                         bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
1850                         bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
1851                         bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
1852                         bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
1853                         bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
1854                         bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
1855                         bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
1856                         next_fcf_index);
1857 }
1858
1859 /**
1860  lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
1861  * @phba: pointer to lpfc hba data structure.
1862  * @fcf_rec: pointer to an existing FCF record.
1863  * @new_fcf_record: pointer to a new FCF record.
1864  * @new_vlan_id: vlan id from the new FCF record.
1865  *
1866  * This function performs matching test of a new FCF record against an existing
1867  * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
1868  * will not be used as part of the FCF record matching criteria.
1869  *
1870  * Returns true if all the fields matching, otherwise returns false.
1871  */
1872 static bool
1873 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
1874                            struct lpfc_fcf_rec *fcf_rec,
1875                            struct fcf_record *new_fcf_record,
1876                            uint16_t new_vlan_id)
1877 {
1878         if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
1879                 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
1880                         return false;
1881         if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
1882                 return false;
1883         if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
1884                 return false;
1885         if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
1886                 return false;
1887         if (fcf_rec->priority != new_fcf_record->fip_priority)
1888                 return false;
1889         return true;
1890 }
1891
1892 /**
1893  * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf
1894  * @vport: Pointer to vport object.
1895  * @fcf_index: index to next fcf.
1896  *
1897  * This function processing the roundrobin fcf failover to next fcf index.
1898  * When this function is invoked, there will be a current fcf registered
1899  * for flogi.
1900  * Return: 0 for continue retrying flogi on currently registered fcf;
1901  *         1 for stop flogi on currently registered fcf;
1902  */
1903 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index)
1904 {
1905         struct lpfc_hba *phba = vport->phba;
1906         int rc;
1907
1908         if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
1909                 spin_lock_irq(&phba->hbalock);
1910                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
1911                         spin_unlock_irq(&phba->hbalock);
1912                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1913                                         "2872 Devloss tmo with no eligible "
1914                                         "FCF, unregister in-use FCF (x%x) "
1915                                         "and rescan FCF table\n",
1916                                         phba->fcf.current_rec.fcf_indx);
1917                         lpfc_unregister_fcf_rescan(phba);
1918                         goto stop_flogi_current_fcf;
1919                 }
1920                 /* Mark the end to FLOGI roundrobin failover */
1921                 phba->hba_flag &= ~FCF_RR_INPROG;
1922                 /* Allow action to new fcf asynchronous event */
1923                 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
1924                 spin_unlock_irq(&phba->hbalock);
1925                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1926                                 "2865 No FCF available, stop roundrobin FCF "
1927                                 "failover and change port state:x%x/x%x\n",
1928                                 phba->pport->port_state, LPFC_VPORT_UNKNOWN);
1929                 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
1930                 goto stop_flogi_current_fcf;
1931         } else {
1932                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS,
1933                                 "2794 Try FLOGI roundrobin FCF failover to "
1934                                 "(x%x)\n", fcf_index);
1935                 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index);
1936                 if (rc)
1937                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
1938                                         "2761 FLOGI roundrobin FCF failover "
1939                                         "failed (rc:x%x) to read FCF (x%x)\n",
1940                                         rc, phba->fcf.current_rec.fcf_indx);
1941                 else
1942                         goto stop_flogi_current_fcf;
1943         }
1944         return 0;
1945
1946 stop_flogi_current_fcf:
1947         lpfc_can_disctmo(vport);
1948         return 1;
1949 }
1950
1951 /**
1952  * lpfc_sli4_fcf_pri_list_del
1953  * @phba: pointer to lpfc hba data structure.
1954  * @fcf_index the index of the fcf record to delete
1955  * This routine checks the on list flag of the fcf_index to be deleted.
1956  * If it is one the list then it is removed from the list, and the flag
1957  * is cleared. This routine grab the hbalock before removing the fcf
1958  * record from the list.
1959  **/
1960 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba,
1961                         uint16_t fcf_index)
1962 {
1963         struct lpfc_fcf_pri *new_fcf_pri;
1964
1965         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
1966         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1967                 "3058 deleting idx x%x pri x%x flg x%x\n",
1968                 fcf_index, new_fcf_pri->fcf_rec.priority,
1969                  new_fcf_pri->fcf_rec.flag);
1970         spin_lock_irq(&phba->hbalock);
1971         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) {
1972                 if (phba->fcf.current_rec.priority ==
1973                                 new_fcf_pri->fcf_rec.priority)
1974                         phba->fcf.eligible_fcf_cnt--;
1975                 list_del_init(&new_fcf_pri->list);
1976                 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST;
1977         }
1978         spin_unlock_irq(&phba->hbalock);
1979 }
1980
1981 /**
1982  * lpfc_sli4_set_fcf_flogi_fail
1983  * @phba: pointer to lpfc hba data structure.
1984  * @fcf_index the index of the fcf record to update
1985  * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED
1986  * flag so the the round robin slection for the particular priority level
1987  * will try a different fcf record that does not have this bit set.
1988  * If the fcf record is re-read for any reason this flag is cleared brfore
1989  * adding it to the priority list.
1990  **/
1991 void
1992 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index)
1993 {
1994         struct lpfc_fcf_pri *new_fcf_pri;
1995         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
1996         spin_lock_irq(&phba->hbalock);
1997         new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED;
1998         spin_unlock_irq(&phba->hbalock);
1999 }
2000
2001 /**
2002  * lpfc_sli4_fcf_pri_list_add
2003  * @phba: pointer to lpfc hba data structure.
2004  * @fcf_index the index of the fcf record to add
2005  * This routine checks the priority of the fcf_index to be added.
2006  * If it is a lower priority than the current head of the fcf_pri list
2007  * then it is added to the list in the right order.
2008  * If it is the same priority as the current head of the list then it
2009  * is added to the head of the list and its bit in the rr_bmask is set.
2010  * If the fcf_index to be added is of a higher priority than the current
2011  * head of the list then the rr_bmask is cleared, its bit is set in the
2012  * rr_bmask and it is added to the head of the list.
2013  * returns:
2014  * 0=success 1=failure
2015  **/
2016 int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba, uint16_t fcf_index,
2017         struct fcf_record *new_fcf_record)
2018 {
2019         uint16_t current_fcf_pri;
2020         uint16_t last_index;
2021         struct lpfc_fcf_pri *fcf_pri;
2022         struct lpfc_fcf_pri *next_fcf_pri;
2023         struct lpfc_fcf_pri *new_fcf_pri;
2024         int ret;
2025
2026         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2027         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2028                 "3059 adding idx x%x pri x%x flg x%x\n",
2029                 fcf_index, new_fcf_record->fip_priority,
2030                  new_fcf_pri->fcf_rec.flag);
2031         spin_lock_irq(&phba->hbalock);
2032         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST)
2033                 list_del_init(&new_fcf_pri->list);
2034         new_fcf_pri->fcf_rec.fcf_index = fcf_index;
2035         new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
2036         if (list_empty(&phba->fcf.fcf_pri_list)) {
2037                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2038                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2039                                 new_fcf_pri->fcf_rec.fcf_index);
2040                 goto out;
2041         }
2042
2043         last_index = find_first_bit(phba->fcf.fcf_rr_bmask,
2044                                 LPFC_SLI4_FCF_TBL_INDX_MAX);
2045         if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
2046                 ret = 0; /* Empty rr list */
2047                 goto out;
2048         }
2049         current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority;
2050         if (new_fcf_pri->fcf_rec.priority <=  current_fcf_pri) {
2051                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2052                 if (new_fcf_pri->fcf_rec.priority <  current_fcf_pri) {
2053                         memset(phba->fcf.fcf_rr_bmask, 0,
2054                                 sizeof(*phba->fcf.fcf_rr_bmask));
2055                         /* fcfs_at_this_priority_level = 1; */
2056                         phba->fcf.eligible_fcf_cnt = 1;
2057                 } else
2058                         /* fcfs_at_this_priority_level++; */
2059                         phba->fcf.eligible_fcf_cnt++;
2060                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2061                                 new_fcf_pri->fcf_rec.fcf_index);
2062                 goto out;
2063         }
2064
2065         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
2066                                 &phba->fcf.fcf_pri_list, list) {
2067                 if (new_fcf_pri->fcf_rec.priority <=
2068                                 fcf_pri->fcf_rec.priority) {
2069                         if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list)
2070                                 list_add(&new_fcf_pri->list,
2071                                                 &phba->fcf.fcf_pri_list);
2072                         else
2073                                 list_add(&new_fcf_pri->list,
2074                                          &((struct lpfc_fcf_pri *)
2075                                         fcf_pri->list.prev)->list);
2076                         ret = 0;
2077                         goto out;
2078                 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list
2079                         || new_fcf_pri->fcf_rec.priority <
2080                                 next_fcf_pri->fcf_rec.priority) {
2081                         list_add(&new_fcf_pri->list, &fcf_pri->list);
2082                         ret = 0;
2083                         goto out;
2084                 }
2085                 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority)
2086                         continue;
2087
2088         }
2089         ret = 1;
2090 out:
2091         /* we use = instead of |= to clear the FLOGI_FAILED flag. */
2092         new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST;
2093         spin_unlock_irq(&phba->hbalock);
2094         return ret;
2095 }
2096
2097 /**
2098  * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
2099  * @phba: pointer to lpfc hba data structure.
2100  * @mboxq: pointer to mailbox object.
2101  *
2102  * This function iterates through all the fcf records available in
2103  * HBA and chooses the optimal FCF record for discovery. After finding
2104  * the FCF for discovery it registers the FCF record and kicks start
2105  * discovery.
2106  * If FCF_IN_USE flag is set in currently used FCF, the routine tries to
2107  * use an FCF record which matches fabric name and mac address of the
2108  * currently used FCF record.
2109  * If the driver supports only one FCF, it will try to use the FCF record
2110  * used by BOOT_BIOS.
2111  */
2112 void
2113 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2114 {
2115         struct fcf_record *new_fcf_record;
2116         uint32_t boot_flag, addr_mode;
2117         uint16_t fcf_index, next_fcf_index;
2118         struct lpfc_fcf_rec *fcf_rec = NULL;
2119         uint16_t vlan_id;
2120         uint32_t seed;
2121         bool select_new_fcf;
2122         int rc;
2123
2124         /* If there is pending FCoE event restart FCF table scan */
2125         if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) {
2126                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2127                 return;
2128         }
2129
2130         /* Parse the FCF record from the non-embedded mailbox command */
2131         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2132                                                       &next_fcf_index);
2133         if (!new_fcf_record) {
2134                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
2135                                 "2765 Mailbox command READ_FCF_RECORD "
2136                                 "failed to retrieve a FCF record.\n");
2137                 /* Let next new FCF event trigger fast failover */
2138                 spin_lock_irq(&phba->hbalock);
2139                 phba->hba_flag &= ~FCF_TS_INPROG;
2140                 spin_unlock_irq(&phba->hbalock);
2141                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2142                 return;
2143         }
2144
2145         /* Check the FCF record against the connection list */
2146         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2147                                       &addr_mode, &vlan_id);
2148
2149         /* Log the FCF record information if turned on */
2150         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2151                                       next_fcf_index);
2152
2153         /*
2154          * If the fcf record does not match with connect list entries
2155          * read the next entry; otherwise, this is an eligible FCF
2156          * record for roundrobin FCF failover.
2157          */
2158         if (!rc) {
2159                 lpfc_sli4_fcf_pri_list_del(phba,
2160                                         bf_get(lpfc_fcf_record_fcf_index,
2161                                                new_fcf_record));
2162                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2163                                 "2781 FCF (x%x) failed connection "
2164                                 "list check: (x%x/x%x)\n",
2165                                 bf_get(lpfc_fcf_record_fcf_index,
2166                                        new_fcf_record),
2167                                 bf_get(lpfc_fcf_record_fcf_avail,
2168                                        new_fcf_record),
2169                                 bf_get(lpfc_fcf_record_fcf_valid,
2170                                        new_fcf_record));
2171                 if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
2172                     lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2173                     new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
2174                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) !=
2175                             phba->fcf.current_rec.fcf_indx) {
2176                                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
2177                                         "2862 FCF (x%x) matches property "
2178                                         "of in-use FCF (x%x)\n",
2179                                         bf_get(lpfc_fcf_record_fcf_index,
2180                                                new_fcf_record),
2181                                         phba->fcf.current_rec.fcf_indx);
2182                                 goto read_next_fcf;
2183                         }
2184                         /*
2185                          * In case the current in-use FCF record becomes
2186                          * invalid/unavailable during FCF discovery that
2187                          * was not triggered by fast FCF failover process,
2188                          * treat it as fast FCF failover.
2189                          */
2190                         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
2191                             !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2192                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2193                                                 "2835 Invalid in-use FCF "
2194                                                 "(x%x), enter FCF failover "
2195                                                 "table scan.\n",
2196                                                 phba->fcf.current_rec.fcf_indx);
2197                                 spin_lock_irq(&phba->hbalock);
2198                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2199                                 spin_unlock_irq(&phba->hbalock);
2200                                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2201                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2202                                                 LPFC_FCOE_FCF_GET_FIRST);
2203                                 return;
2204                         }
2205                 }
2206                 goto read_next_fcf;
2207         } else {
2208                 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2209                 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index,
2210                                                         new_fcf_record);
2211                 if (rc)
2212                         goto read_next_fcf;
2213         }
2214
2215         /*
2216          * If this is not the first FCF discovery of the HBA, use last
2217          * FCF record for the discovery. The condition that a rescan
2218          * matches the in-use FCF record: fabric name, switch name, mac
2219          * address, and vlan_id.
2220          */
2221         spin_lock_irq(&phba->hbalock);
2222         if (phba->fcf.fcf_flag & FCF_IN_USE) {
2223                 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2224                         lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2225                     new_fcf_record, vlan_id)) {
2226                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) ==
2227                             phba->fcf.current_rec.fcf_indx) {
2228                                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2229                                 if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
2230                                         /* Stop FCF redisc wait timer */
2231                                         __lpfc_sli4_stop_fcf_redisc_wait_timer(
2232                                                                         phba);
2233                                 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2234                                         /* Fast failover, mark completed */
2235                                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2236                                 spin_unlock_irq(&phba->hbalock);
2237                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2238                                                 "2836 New FCF matches in-use "
2239                                                 "FCF (x%x)\n",
2240                                                 phba->fcf.current_rec.fcf_indx);
2241                                 goto out;
2242                         } else
2243                                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
2244                                         "2863 New FCF (x%x) matches "
2245                                         "property of in-use FCF (x%x)\n",
2246                                         bf_get(lpfc_fcf_record_fcf_index,
2247                                                new_fcf_record),
2248                                         phba->fcf.current_rec.fcf_indx);
2249                 }
2250                 /*
2251                  * Read next FCF record from HBA searching for the matching
2252                  * with in-use record only if not during the fast failover
2253                  * period. In case of fast failover period, it shall try to
2254                  * determine whether the FCF record just read should be the
2255                  * next candidate.
2256                  */
2257                 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2258                         spin_unlock_irq(&phba->hbalock);
2259                         goto read_next_fcf;
2260                 }
2261         }
2262         /*
2263          * Update on failover FCF record only if it's in FCF fast-failover
2264          * period; otherwise, update on current FCF record.
2265          */
2266         if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2267                 fcf_rec = &phba->fcf.failover_rec;
2268         else
2269                 fcf_rec = &phba->fcf.current_rec;
2270
2271         if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
2272                 /*
2273                  * If the driver FCF record does not have boot flag
2274                  * set and new hba fcf record has boot flag set, use
2275                  * the new hba fcf record.
2276                  */
2277                 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
2278                         /* Choose this FCF record */
2279                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2280                                         "2837 Update current FCF record "
2281                                         "(x%x) with new FCF record (x%x)\n",
2282                                         fcf_rec->fcf_indx,
2283                                         bf_get(lpfc_fcf_record_fcf_index,
2284                                         new_fcf_record));
2285                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2286                                         addr_mode, vlan_id, BOOT_ENABLE);
2287                         spin_unlock_irq(&phba->hbalock);
2288                         goto read_next_fcf;
2289                 }
2290                 /*
2291                  * If the driver FCF record has boot flag set and the
2292                  * new hba FCF record does not have boot flag, read
2293                  * the next FCF record.
2294                  */
2295                 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
2296                         spin_unlock_irq(&phba->hbalock);
2297                         goto read_next_fcf;
2298                 }
2299                 /*
2300                  * If the new hba FCF record has lower priority value
2301                  * than the driver FCF record, use the new record.
2302                  */
2303                 if (new_fcf_record->fip_priority < fcf_rec->priority) {
2304                         /* Choose the new FCF record with lower priority */
2305                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2306                                         "2838 Update current FCF record "
2307                                         "(x%x) with new FCF record (x%x)\n",
2308                                         fcf_rec->fcf_indx,
2309                                         bf_get(lpfc_fcf_record_fcf_index,
2310                                                new_fcf_record));
2311                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2312                                         addr_mode, vlan_id, 0);
2313                         /* Reset running random FCF selection count */
2314                         phba->fcf.eligible_fcf_cnt = 1;
2315                 } else if (new_fcf_record->fip_priority == fcf_rec->priority) {
2316                         /* Update running random FCF selection count */
2317                         phba->fcf.eligible_fcf_cnt++;
2318                         select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
2319                                                 phba->fcf.eligible_fcf_cnt);
2320                         if (select_new_fcf) {
2321                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2322                                         "2839 Update current FCF record "
2323                                         "(x%x) with new FCF record (x%x)\n",
2324                                         fcf_rec->fcf_indx,
2325                                         bf_get(lpfc_fcf_record_fcf_index,
2326                                                new_fcf_record));
2327                                 /* Choose the new FCF by random selection */
2328                                 __lpfc_update_fcf_record(phba, fcf_rec,
2329                                                          new_fcf_record,
2330                                                          addr_mode, vlan_id, 0);
2331                         }
2332                 }
2333                 spin_unlock_irq(&phba->hbalock);
2334                 goto read_next_fcf;
2335         }
2336         /*
2337          * This is the first suitable FCF record, choose this record for
2338          * initial best-fit FCF.
2339          */
2340         if (fcf_rec) {
2341                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2342                                 "2840 Update initial FCF candidate "
2343                                 "with FCF (x%x)\n",
2344                                 bf_get(lpfc_fcf_record_fcf_index,
2345                                        new_fcf_record));
2346                 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2347                                          addr_mode, vlan_id, (boot_flag ?
2348                                          BOOT_ENABLE : 0));
2349                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2350                 /* Setup initial running random FCF selection count */
2351                 phba->fcf.eligible_fcf_cnt = 1;
2352                 /* Seeding the random number generator for random selection */
2353                 seed = (uint32_t)(0xFFFFFFFF & jiffies);
2354                 srandom32(seed);
2355         }
2356         spin_unlock_irq(&phba->hbalock);
2357         goto read_next_fcf;
2358
2359 read_next_fcf:
2360         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2361         if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
2362                 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
2363                         /*
2364                          * Case of FCF fast failover scan
2365                          */
2366
2367                         /*
2368                          * It has not found any suitable FCF record, cancel
2369                          * FCF scan inprogress, and do nothing
2370                          */
2371                         if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
2372                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2373                                                "2782 No suitable FCF found: "
2374                                                "(x%x/x%x)\n",
2375                                                phba->fcoe_eventtag_at_fcf_scan,
2376                                                bf_get(lpfc_fcf_record_fcf_index,
2377                                                       new_fcf_record));
2378                                 spin_lock_irq(&phba->hbalock);
2379                                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2380                                         phba->hba_flag &= ~FCF_TS_INPROG;
2381                                         spin_unlock_irq(&phba->hbalock);
2382                                         /* Unregister in-use FCF and rescan */
2383                                         lpfc_printf_log(phba, KERN_INFO,
2384                                                         LOG_FIP,
2385                                                         "2864 On devloss tmo "
2386                                                         "unreg in-use FCF and "
2387                                                         "rescan FCF table\n");
2388                                         lpfc_unregister_fcf_rescan(phba);
2389                                         return;
2390                                 }
2391                                 /*
2392                                  * Let next new FCF event trigger fast failover
2393                                  */
2394                                 phba->hba_flag &= ~FCF_TS_INPROG;
2395                                 spin_unlock_irq(&phba->hbalock);
2396                                 return;
2397                         }
2398                         /*
2399                          * It has found a suitable FCF record that is not
2400                          * the same as in-use FCF record, unregister the
2401                          * in-use FCF record, replace the in-use FCF record
2402                          * with the new FCF record, mark FCF fast failover
2403                          * completed, and then start register the new FCF
2404                          * record.
2405                          */
2406
2407                         /* Unregister the current in-use FCF record */
2408                         lpfc_unregister_fcf(phba);
2409
2410                         /* Replace in-use record with the new record */
2411                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2412                                         "2842 Replace in-use FCF (x%x) "
2413                                         "with failover FCF (x%x)\n",
2414                                         phba->fcf.current_rec.fcf_indx,
2415                                         phba->fcf.failover_rec.fcf_indx);
2416                         memcpy(&phba->fcf.current_rec,
2417                                &phba->fcf.failover_rec,
2418                                sizeof(struct lpfc_fcf_rec));
2419                         /*
2420                          * Mark the fast FCF failover rediscovery completed
2421                          * and the start of the first round of the roundrobin
2422                          * FCF failover.
2423                          */
2424                         spin_lock_irq(&phba->hbalock);
2425                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2426                         spin_unlock_irq(&phba->hbalock);
2427                         /* Register to the new FCF record */
2428                         lpfc_register_fcf(phba);
2429                 } else {
2430                         /*
2431                          * In case of transaction period to fast FCF failover,
2432                          * do nothing when search to the end of the FCF table.
2433                          */
2434                         if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
2435                             (phba->fcf.fcf_flag & FCF_REDISC_PEND))
2436                                 return;
2437
2438                         if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2439                                 phba->fcf.fcf_flag & FCF_IN_USE) {
2440                                 /*
2441                                  * In case the current in-use FCF record no
2442                                  * longer existed during FCF discovery that
2443                                  * was not triggered by fast FCF failover
2444                                  * process, treat it as fast FCF failover.
2445                                  */
2446                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2447                                                 "2841 In-use FCF record (x%x) "
2448                                                 "not reported, entering fast "
2449                                                 "FCF failover mode scanning.\n",
2450                                                 phba->fcf.current_rec.fcf_indx);
2451                                 spin_lock_irq(&phba->hbalock);
2452                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2453                                 spin_unlock_irq(&phba->hbalock);
2454                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2455                                                 LPFC_FCOE_FCF_GET_FIRST);
2456                                 return;
2457                         }
2458                         /* Register to the new FCF record */
2459                         lpfc_register_fcf(phba);
2460                 }
2461         } else
2462                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
2463         return;
2464
2465 out:
2466         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2467         lpfc_register_fcf(phba);
2468
2469         return;
2470 }
2471
2472 /**
2473  * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler
2474  * @phba: pointer to lpfc hba data structure.
2475  * @mboxq: pointer to mailbox object.
2476  *
2477  * This is the callback function for FLOGI failure roundrobin FCF failover
2478  * read FCF record mailbox command from the eligible FCF record bmask for
2479  * performing the failover. If the FCF read back is not valid/available, it
2480  * fails through to retrying FLOGI to the currently registered FCF again.
2481  * Otherwise, if the FCF read back is valid and available, it will set the
2482  * newly read FCF record to the failover FCF record, unregister currently
2483  * registered FCF record, copy the failover FCF record to the current
2484  * FCF record, and then register the current FCF record before proceeding
2485  * to trying FLOGI on the new failover FCF.
2486  */
2487 void
2488 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2489 {
2490         struct fcf_record *new_fcf_record;
2491         uint32_t boot_flag, addr_mode;
2492         uint16_t next_fcf_index, fcf_index;
2493         uint16_t current_fcf_index;
2494         uint16_t vlan_id;
2495         int rc;
2496
2497         /* If link state is not up, stop the roundrobin failover process */
2498         if (phba->link_state < LPFC_LINK_UP) {
2499                 spin_lock_irq(&phba->hbalock);
2500                 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
2501                 phba->hba_flag &= ~FCF_RR_INPROG;
2502                 spin_unlock_irq(&phba->hbalock);
2503                 goto out;
2504         }
2505
2506         /* Parse the FCF record from the non-embedded mailbox command */
2507         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2508                                                       &next_fcf_index);
2509         if (!new_fcf_record) {
2510                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2511                                 "2766 Mailbox command READ_FCF_RECORD "
2512                                 "failed to retrieve a FCF record.\n");
2513                 goto error_out;
2514         }
2515
2516         /* Get the needed parameters from FCF record */
2517         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2518                                       &addr_mode, &vlan_id);
2519
2520         /* Log the FCF record information if turned on */
2521         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2522                                       next_fcf_index);
2523
2524         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2525         if (!rc) {
2526                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2527                                 "2848 Remove ineligible FCF (x%x) from "
2528                                 "from roundrobin bmask\n", fcf_index);
2529                 /* Clear roundrobin bmask bit for ineligible FCF */
2530                 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index);
2531                 /* Perform next round of roundrobin FCF failover */
2532                 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
2533                 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index);
2534                 if (rc)
2535                         goto out;
2536                 goto error_out;
2537         }
2538
2539         if (fcf_index == phba->fcf.current_rec.fcf_indx) {
2540                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2541                                 "2760 Perform FLOGI roundrobin FCF failover: "
2542                                 "FCF (x%x) back to FCF (x%x)\n",
2543                                 phba->fcf.current_rec.fcf_indx, fcf_index);
2544                 /* Wait 500 ms before retrying FLOGI to current FCF */
2545                 msleep(500);
2546                 lpfc_issue_init_vfi(phba->pport);
2547                 goto out;
2548         }
2549
2550         /* Upload new FCF record to the failover FCF record */
2551         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2552                         "2834 Update current FCF (x%x) with new FCF (x%x)\n",
2553                         phba->fcf.failover_rec.fcf_indx, fcf_index);
2554         spin_lock_irq(&phba->hbalock);
2555         __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
2556                                  new_fcf_record, addr_mode, vlan_id,
2557                                  (boot_flag ? BOOT_ENABLE : 0));
2558         spin_unlock_irq(&phba->hbalock);
2559
2560         current_fcf_index = phba->fcf.current_rec.fcf_indx;
2561
2562         /* Unregister the current in-use FCF record */
2563         lpfc_unregister_fcf(phba);
2564
2565         /* Replace in-use record with the new record */
2566         memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
2567                sizeof(struct lpfc_fcf_rec));
2568
2569         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2570                         "2783 Perform FLOGI roundrobin FCF failover: FCF "
2571                         "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index);
2572
2573 error_out:
2574         lpfc_register_fcf(phba);
2575 out:
2576         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2577 }
2578
2579 /**
2580  * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
2581  * @phba: pointer to lpfc hba data structure.
2582  * @mboxq: pointer to mailbox object.
2583  *
2584  * This is the callback function of read FCF record mailbox command for
2585  * updating the eligible FCF bmask for FLOGI failure roundrobin FCF
2586  * failover when a new FCF event happened. If the FCF read back is
2587  * valid/available and it passes the connection list check, it updates
2588  * the bmask for the eligible FCF record for roundrobin failover.
2589  */
2590 void
2591 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2592 {
2593         struct fcf_record *new_fcf_record;
2594         uint32_t boot_flag, addr_mode;
2595         uint16_t fcf_index, next_fcf_index;
2596         uint16_t vlan_id;
2597         int rc;
2598
2599         /* If link state is not up, no need to proceed */
2600         if (phba->link_state < LPFC_LINK_UP)
2601                 goto out;
2602
2603         /* If FCF discovery period is over, no need to proceed */
2604         if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
2605                 goto out;
2606
2607         /* Parse the FCF record from the non-embedded mailbox command */
2608         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2609                                                       &next_fcf_index);
2610         if (!new_fcf_record) {
2611                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2612                                 "2767 Mailbox command READ_FCF_RECORD "
2613                                 "failed to retrieve a FCF record.\n");
2614                 goto out;
2615         }
2616
2617         /* Check the connection list for eligibility */
2618         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2619                                       &addr_mode, &vlan_id);
2620
2621         /* Log the FCF record information if turned on */
2622         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2623                                       next_fcf_index);
2624
2625         if (!rc)
2626                 goto out;
2627
2628         /* Update the eligible FCF record index bmask */
2629         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2630
2631         rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record);
2632
2633 out:
2634         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2635 }
2636
2637 /**
2638  * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command.
2639  * @phba: pointer to lpfc hba data structure.
2640  * @mboxq: pointer to mailbox data structure.
2641  *
2642  * This function handles completion of init vfi mailbox command.
2643  */
2644 void
2645 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2646 {
2647         struct lpfc_vport *vport = mboxq->vport;
2648
2649         /* VFI not supported on interface type 0, just do the flogi */
2650         if (mboxq->u.mb.mbxStatus && (bf_get(lpfc_sli_intf_if_type,
2651             &phba->sli4_hba.sli_intf) != LPFC_SLI_INTF_IF_TYPE_0)) {
2652                 lpfc_printf_vlog(vport, KERN_ERR,
2653                                 LOG_MBOX,
2654                                 "2891 Init VFI mailbox failed 0x%x\n",
2655                                 mboxq->u.mb.mbxStatus);
2656                 mempool_free(mboxq, phba->mbox_mem_pool);
2657                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2658                 return;
2659         }
2660
2661         lpfc_initial_flogi(vport);
2662         mempool_free(mboxq, phba->mbox_mem_pool);
2663         return;
2664 }
2665
2666 /**
2667  * lpfc_issue_init_vfi - Issue init_vfi mailbox command.
2668  * @vport: pointer to lpfc_vport data structure.
2669  *
2670  * This function issue a init_vfi mailbox command to initialize the VFI and
2671  * VPI for the physical port.
2672  */
2673 void
2674 lpfc_issue_init_vfi(struct lpfc_vport *vport)
2675 {
2676         LPFC_MBOXQ_t *mboxq;
2677         int rc;
2678         struct lpfc_hba *phba = vport->phba;
2679
2680         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2681         if (!mboxq) {
2682                 lpfc_printf_vlog(vport, KERN_ERR,
2683                         LOG_MBOX, "2892 Failed to allocate "
2684                         "init_vfi mailbox\n");
2685                 return;
2686         }
2687         lpfc_init_vfi(mboxq, vport);
2688         mboxq->mbox_cmpl = lpfc_init_vfi_cmpl;
2689         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
2690         if (rc == MBX_NOT_FINISHED) {
2691                 lpfc_printf_vlog(vport, KERN_ERR,
2692                         LOG_MBOX, "2893 Failed to issue init_vfi mailbox\n");
2693                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
2694         }
2695 }
2696
2697 /**
2698  * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
2699  * @phba: pointer to lpfc hba data structure.
2700  * @mboxq: pointer to mailbox data structure.
2701  *
2702  * This function handles completion of init vpi mailbox command.
2703  */
2704 void
2705 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2706 {
2707         struct lpfc_vport *vport = mboxq->vport;
2708         struct lpfc_nodelist *ndlp;
2709         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2710
2711         if (mboxq->u.mb.mbxStatus) {
2712                 lpfc_printf_vlog(vport, KERN_ERR,
2713                                 LOG_MBOX,
2714                                 "2609 Init VPI mailbox failed 0x%x\n",
2715                                 mboxq->u.mb.mbxStatus);
2716                 mempool_free(mboxq, phba->mbox_mem_pool);
2717                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2718                 return;
2719         }
2720         spin_lock_irq(shost->host_lock);
2721         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
2722         spin_unlock_irq(shost->host_lock);
2723
2724         /* If this port is physical port or FDISC is done, do reg_vpi */
2725         if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
2726                         ndlp = lpfc_findnode_did(vport, Fabric_DID);
2727                         if (!ndlp)
2728                                 lpfc_printf_vlog(vport, KERN_ERR,
2729                                         LOG_DISCOVERY,
2730                                         "2731 Cannot find fabric "
2731                                         "controller node\n");
2732                         else
2733                                 lpfc_register_new_vport(phba, vport, ndlp);
2734                         mempool_free(mboxq, phba->mbox_mem_pool);
2735                         return;
2736         }
2737
2738         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2739                 lpfc_initial_fdisc(vport);
2740         else {
2741                 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
2742                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2743                                  "2606 No NPIV Fabric support\n");
2744         }
2745         mempool_free(mboxq, phba->mbox_mem_pool);
2746         return;
2747 }
2748
2749 /**
2750  * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
2751  * @vport: pointer to lpfc_vport data structure.
2752  *
2753  * This function issue a init_vpi mailbox command to initialize
2754  * VPI for the vport.
2755  */
2756 void
2757 lpfc_issue_init_vpi(struct lpfc_vport *vport)
2758 {
2759         LPFC_MBOXQ_t *mboxq;
2760         int rc;
2761
2762         mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
2763         if (!mboxq) {
2764                 lpfc_printf_vlog(vport, KERN_ERR,
2765                         LOG_MBOX, "2607 Failed to allocate "
2766                         "init_vpi mailbox\n");
2767                 return;
2768         }
2769         lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
2770         mboxq->vport = vport;
2771         mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
2772         rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
2773         if (rc == MBX_NOT_FINISHED) {
2774                 lpfc_printf_vlog(vport, KERN_ERR,
2775                         LOG_MBOX, "2608 Failed to issue init_vpi mailbox\n");
2776                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
2777         }
2778 }
2779
2780 /**
2781  * lpfc_start_fdiscs - send fdiscs for each vports on this port.
2782  * @phba: pointer to lpfc hba data structure.
2783  *
2784  * This function loops through the list of vports on the @phba and issues an
2785  * FDISC if possible.
2786  */
2787 void
2788 lpfc_start_fdiscs(struct lpfc_hba *phba)
2789 {
2790         struct lpfc_vport **vports;
2791         int i;
2792
2793         vports = lpfc_create_vport_work_array(phba);
2794         if (vports != NULL) {
2795                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2796                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
2797                                 continue;
2798                         /* There are no vpi for this vport */
2799                         if (vports[i]->vpi > phba->max_vpi) {
2800                                 lpfc_vport_set_state(vports[i],
2801                                                      FC_VPORT_FAILED);
2802                                 continue;
2803                         }
2804                         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
2805                                 lpfc_vport_set_state(vports[i],
2806                                                      FC_VPORT_LINKDOWN);
2807                                 continue;
2808                         }
2809                         if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
2810                                 lpfc_issue_init_vpi(vports[i]);
2811                                 continue;
2812                         }
2813                         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2814                                 lpfc_initial_fdisc(vports[i]);
2815                         else {
2816                                 lpfc_vport_set_state(vports[i],
2817                                                      FC_VPORT_NO_FABRIC_SUPP);
2818                                 lpfc_printf_vlog(vports[i], KERN_ERR,
2819                                                  LOG_ELS,
2820                                                  "0259 No NPIV "
2821                                                  "Fabric support\n");
2822                         }
2823                 }
2824         }
2825         lpfc_destroy_vport_work_array(phba, vports);
2826 }
2827
2828 void
2829 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2830 {
2831         struct lpfc_dmabuf *dmabuf = mboxq->context1;
2832         struct lpfc_vport *vport = mboxq->vport;
2833         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2834
2835         if (mboxq->u.mb.mbxStatus) {
2836                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2837                          "2018 REG_VFI mbxStatus error x%x "
2838                          "HBA state x%x\n",
2839                          mboxq->u.mb.mbxStatus, vport->port_state);
2840                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
2841                         /* FLOGI failed, use loop map to make discovery list */
2842                         lpfc_disc_list_loopmap(vport);
2843                         /* Start discovery */
2844                         lpfc_disc_start(vport);
2845                         goto fail_free_mem;
2846                 }
2847                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2848                 goto fail_free_mem;
2849         }
2850         /* The VPI is implicitly registered when the VFI is registered */
2851         spin_lock_irq(shost->host_lock);
2852         vport->vpi_state |= LPFC_VPI_REGISTERED;
2853         vport->fc_flag |= FC_VFI_REGISTERED;
2854         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
2855         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
2856         spin_unlock_irq(shost->host_lock);
2857
2858         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
2859                 /* For private loop just start discovery and we are done. */
2860                 if ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) &&
2861                     (phba->alpa_map[0] == 0) &&
2862                     !(vport->fc_flag & FC_PUBLIC_LOOP)) {
2863                         /* Use loop map to make discovery list */
2864                         lpfc_disc_list_loopmap(vport);
2865                         /* Start discovery */
2866                         lpfc_disc_start(vport);
2867                 } else {
2868                         lpfc_start_fdiscs(phba);
2869                         lpfc_do_scr_ns_plogi(phba, vport);
2870                 }
2871         }
2872
2873 fail_free_mem:
2874         mempool_free(mboxq, phba->mbox_mem_pool);
2875         lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
2876         kfree(dmabuf);
2877         return;
2878 }
2879
2880 static void
2881 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2882 {
2883         MAILBOX_t *mb = &pmb->u.mb;
2884         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
2885         struct lpfc_vport  *vport = pmb->vport;
2886
2887
2888         /* Check for error */
2889         if (mb->mbxStatus) {
2890                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
2891                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2892                                  "0319 READ_SPARAM mbxStatus error x%x "
2893                                  "hba state x%x>\n",
2894                                  mb->mbxStatus, vport->port_state);
2895                 lpfc_linkdown(phba);
2896                 goto out;
2897         }
2898
2899         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
2900                sizeof (struct serv_parm));
2901         lpfc_update_vport_wwn(vport);
2902         if (vport->port_type == LPFC_PHYSICAL_PORT) {
2903                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
2904                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
2905         }
2906
2907         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2908         kfree(mp);
2909         mempool_free(pmb, phba->mbox_mem_pool);
2910         return;
2911
2912 out:
2913         pmb->context1 = NULL;
2914         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2915         kfree(mp);
2916         lpfc_issue_clear_la(phba, vport);
2917         mempool_free(pmb, phba->mbox_mem_pool);
2918         return;
2919 }
2920
2921 static void
2922 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
2923 {
2924         struct lpfc_vport *vport = phba->pport;
2925         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
2926         int i;
2927         struct lpfc_dmabuf *mp;
2928         int rc;
2929         struct fcf_record *fcf_record;
2930
2931         spin_lock_irq(&phba->hbalock);
2932         switch (bf_get(lpfc_mbx_read_top_link_spd, la)) {
2933         case LPFC_LINK_SPEED_1GHZ:
2934         case LPFC_LINK_SPEED_2GHZ:
2935         case LPFC_LINK_SPEED_4GHZ:
2936         case LPFC_LINK_SPEED_8GHZ:
2937         case LPFC_LINK_SPEED_10GHZ:
2938         case LPFC_LINK_SPEED_16GHZ:
2939                 phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la);
2940                 break;
2941         default:
2942                 phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN;
2943                 break;
2944         }
2945
2946         phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la);
2947         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
2948
2949         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
2950                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
2951
2952                 /* if npiv is enabled and this adapter supports npiv log
2953                  * a message that npiv is not supported in this topology
2954                  */
2955                 if (phba->cfg_enable_npiv && phba->max_vpi)
2956                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2957                                 "1309 Link Up Event npiv not supported in loop "
2958                                 "topology\n");
2959                                 /* Get Loop Map information */
2960                 if (bf_get(lpfc_mbx_read_top_il, la))
2961                         vport->fc_flag |= FC_LBIT;
2962
2963                 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la);
2964                 i = la->lilpBde64.tus.f.bdeSize;
2965
2966                 if (i == 0) {
2967                         phba->alpa_map[0] = 0;
2968                 } else {
2969                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
2970                                 int numalpa, j, k;
2971                                 union {
2972                                         uint8_t pamap[16];
2973                                         struct {
2974                                                 uint32_t wd1;
2975                                                 uint32_t wd2;
2976                                                 uint32_t wd3;
2977                                                 uint32_t wd4;
2978                                         } pa;
2979                                 } un;
2980                                 numalpa = phba->alpa_map[0];
2981                                 j = 0;
2982                                 while (j < numalpa) {
2983                                         memset(un.pamap, 0, 16);
2984                                         for (k = 1; j < numalpa; k++) {
2985                                                 un.pamap[k - 1] =
2986                                                         phba->alpa_map[j + 1];
2987                                                 j++;
2988                                                 if (k == 16)
2989                                                         break;
2990                                         }
2991                                         /* Link Up Event ALPA map */
2992                                         lpfc_printf_log(phba,
2993                                                         KERN_WARNING,
2994                                                         LOG_LINK_EVENT,
2995                                                         "1304 Link Up Event "
2996                                                         "ALPA map Data: x%x "
2997                                                         "x%x x%x x%x\n",
2998                                                         un.pa.wd1, un.pa.wd2,
2999                                                         un.pa.wd3, un.pa.wd4);
3000                                 }
3001                         }
3002                 }
3003         } else {
3004                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
3005                         if (phba->max_vpi && phba->cfg_enable_npiv &&
3006                            (phba->sli_rev == 3))
3007                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
3008                 }
3009                 vport->fc_myDID = phba->fc_pref_DID;
3010                 vport->fc_flag |= FC_LBIT;
3011         }
3012         spin_unlock_irq(&phba->hbalock);
3013
3014         lpfc_linkup(phba);
3015         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3016         if (!sparam_mbox)
3017                 goto out;
3018
3019         rc = lpfc_read_sparam(phba, sparam_mbox, 0);
3020         if (rc) {
3021                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3022                 goto out;
3023         }
3024         sparam_mbox->vport = vport;
3025         sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
3026         rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
3027         if (rc == MBX_NOT_FINISHED) {
3028                 mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
3029                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3030                 kfree(mp);
3031                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3032                 goto out;
3033         }
3034
3035         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3036                 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3037                 if (!cfglink_mbox)
3038                         goto out;
3039                 vport->port_state = LPFC_LOCAL_CFG_LINK;
3040                 lpfc_config_link(phba, cfglink_mbox);
3041                 cfglink_mbox->vport = vport;
3042                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
3043                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
3044                 if (rc == MBX_NOT_FINISHED) {
3045                         mempool_free(cfglink_mbox, phba->mbox_mem_pool);
3046                         goto out;
3047                 }
3048         } else {
3049                 vport->port_state = LPFC_VPORT_UNKNOWN;
3050                 /*
3051                  * Add the driver's default FCF record at FCF index 0 now. This
3052                  * is phase 1 implementation that support FCF index 0 and driver
3053                  * defaults.
3054                  */
3055                 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
3056                         fcf_record = kzalloc(sizeof(struct fcf_record),
3057                                         GFP_KERNEL);
3058                         if (unlikely(!fcf_record)) {
3059                                 lpfc_printf_log(phba, KERN_ERR,
3060                                         LOG_MBOX | LOG_SLI,
3061                                         "2554 Could not allocate memory for "
3062                                         "fcf record\n");
3063                                 rc = -ENODEV;
3064                                 goto out;
3065                         }
3066
3067                         lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
3068                                                 LPFC_FCOE_FCF_DEF_INDEX);
3069                         rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
3070                         if (unlikely(rc)) {
3071                                 lpfc_printf_log(phba, KERN_ERR,
3072                                         LOG_MBOX | LOG_SLI,
3073                                         "2013 Could not manually add FCF "
3074                                         "record 0, status %d\n", rc);
3075                                 rc = -ENODEV;
3076                                 kfree(fcf_record);
3077                                 goto out;
3078                         }
3079                         kfree(fcf_record);
3080                 }
3081                 /*
3082                  * The driver is expected to do FIP/FCF. Call the port
3083                  * and get the FCF Table.
3084                  */
3085                 spin_lock_irq(&phba->hbalock);
3086                 if (phba->hba_flag & FCF_TS_INPROG) {
3087                         spin_unlock_irq(&phba->hbalock);
3088                         return;
3089                 }
3090                 /* This is the initial FCF discovery scan */
3091                 phba->fcf.fcf_flag |= FCF_INIT_DISC;
3092                 spin_unlock_irq(&phba->hbalock);
3093                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3094                                 "2778 Start FCF table scan at linkup\n");
3095                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
3096                                                      LPFC_FCOE_FCF_GET_FIRST);
3097                 if (rc) {
3098                         spin_lock_irq(&phba->hbalock);
3099                         phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
3100                         spin_unlock_irq(&phba->hbalock);
3101                         goto out;
3102                 }
3103                 /* Reset FCF roundrobin bmask for new discovery */
3104                 lpfc_sli4_clear_fcf_rr_bmask(phba);
3105         }
3106
3107         return;
3108 out:
3109         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3110         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
3111                          "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
3112                          vport->port_state, sparam_mbox, cfglink_mbox);
3113         lpfc_issue_clear_la(phba, vport);
3114         return;
3115 }
3116
3117 static void
3118 lpfc_enable_la(struct lpfc_hba *phba)
3119 {
3120         uint32_t control;
3121         struct lpfc_sli *psli = &phba->sli;
3122         spin_lock_irq(&phba->hbalock);
3123         psli->sli_flag |= LPFC_PROCESS_LA;
3124         if (phba->sli_rev <= LPFC_SLI_REV3) {
3125                 control = readl(phba->HCregaddr);
3126                 control |= HC_LAINT_ENA;
3127                 writel(control, phba->HCregaddr);
3128                 readl(phba->HCregaddr); /* flush */
3129         }
3130         spin_unlock_irq(&phba->hbalock);
3131 }
3132
3133 static void
3134 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
3135 {
3136         lpfc_linkdown(phba);
3137         lpfc_enable_la(phba);
3138         lpfc_unregister_unused_fcf(phba);
3139         /* turn on Link Attention interrupts - no CLEAR_LA needed */
3140 }
3141
3142
3143 /*
3144  * This routine handles processing a READ_TOPOLOGY mailbox
3145  * command upon completion. It is setup in the LPFC_MBOXQ
3146  * as the completion routine when the command is
3147  * handed off to the SLI layer.
3148  */
3149 void
3150 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3151 {
3152         struct lpfc_vport *vport = pmb->vport;
3153         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3154         struct lpfc_mbx_read_top *la;
3155         MAILBOX_t *mb = &pmb->u.mb;
3156         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3157
3158         /* Unblock ELS traffic */
3159         phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
3160         /* Check for error */
3161         if (mb->mbxStatus) {
3162                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3163                                 "1307 READ_LA mbox error x%x state x%x\n",
3164                                 mb->mbxStatus, vport->port_state);
3165                 lpfc_mbx_issue_link_down(phba);
3166                 phba->link_state = LPFC_HBA_ERROR;
3167                 goto lpfc_mbx_cmpl_read_topology_free_mbuf;
3168         }
3169
3170         la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
3171
3172         memcpy(&phba->alpa_map[0], mp->virt, 128);
3173
3174         spin_lock_irq(shost->host_lock);
3175         if (bf_get(lpfc_mbx_read_top_pb, la))
3176                 vport->fc_flag |= FC_BYPASSED_MODE;
3177         else
3178                 vport->fc_flag &= ~FC_BYPASSED_MODE;
3179         spin_unlock_irq(shost->host_lock);
3180
3181         if ((phba->fc_eventTag  < la->eventTag) ||
3182             (phba->fc_eventTag == la->eventTag)) {
3183                 phba->fc_stat.LinkMultiEvent++;
3184                 if (bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP)
3185                         if (phba->fc_eventTag != 0)
3186                                 lpfc_linkdown(phba);
3187         }
3188
3189         phba->fc_eventTag = la->eventTag;
3190         spin_lock_irq(&phba->hbalock);
3191         if (bf_get(lpfc_mbx_read_top_mm, la))
3192                 phba->sli.sli_flag |= LPFC_MENLO_MAINT;
3193         else
3194                 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
3195         spin_unlock_irq(&phba->hbalock);
3196
3197         phba->link_events++;
3198         if ((bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP) &&
3199             (!bf_get(lpfc_mbx_read_top_mm, la))) {
3200                 phba->fc_stat.LinkUp++;
3201                 if (phba->link_flag & LS_LOOPBACK_MODE) {
3202                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3203                                         "1306 Link Up Event in loop back mode "
3204                                         "x%x received Data: x%x x%x x%x x%x\n",
3205                                         la->eventTag, phba->fc_eventTag,
3206                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3207                                                la),
3208                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3209                                         phba->alpa_map[0]);
3210                 } else {
3211                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3212                                         "1303 Link Up Event x%x received "
3213                                         "Data: x%x x%x x%x x%x x%x x%x %d\n",
3214                                         la->eventTag, phba->fc_eventTag,
3215                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3216                                                la),
3217                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3218                                         phba->alpa_map[0],
3219                                         bf_get(lpfc_mbx_read_top_mm, la),
3220                                         bf_get(lpfc_mbx_read_top_fa, la),
3221                                         phba->wait_4_mlo_maint_flg);
3222                 }
3223                 lpfc_mbx_process_link_up(phba, la);
3224         } else if (bf_get(lpfc_mbx_read_top_att_type, la) ==
3225                    LPFC_ATT_LINK_DOWN) {
3226                 phba->fc_stat.LinkDown++;
3227                 if (phba->link_flag & LS_LOOPBACK_MODE) {
3228                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3229                                 "1308 Link Down Event in loop back mode "
3230                                 "x%x received "
3231                                 "Data: x%x x%x x%x\n",
3232                                 la->eventTag, phba->fc_eventTag,
3233                                 phba->pport->port_state, vport->fc_flag);
3234                 }
3235                 else {
3236                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3237                                 "1305 Link Down Event x%x received "
3238                                 "Data: x%x x%x x%x x%x x%x\n",
3239                                 la->eventTag, phba->fc_eventTag,
3240                                 phba->pport->port_state, vport->fc_flag,
3241                                 bf_get(lpfc_mbx_read_top_mm, la),
3242                                 bf_get(lpfc_mbx_read_top_fa, la));
3243                 }
3244                 lpfc_mbx_issue_link_down(phba);
3245         }
3246         if ((bf_get(lpfc_mbx_read_top_mm, la)) &&
3247             (bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP)) {
3248                 if (phba->link_state != LPFC_LINK_DOWN) {
3249                         phba->fc_stat.LinkDown++;
3250                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3251                                 "1312 Link Down Event x%x received "
3252                                 "Data: x%x x%x x%x\n",
3253                                 la->eventTag, phba->fc_eventTag,
3254                                 phba->pport->port_state, vport->fc_flag);
3255                         lpfc_mbx_issue_link_down(phba);
3256                 } else
3257                         lpfc_enable_la(phba);
3258
3259                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3260                                 "1310 Menlo Maint Mode Link up Event x%x rcvd "
3261                                 "Data: x%x x%x x%x\n",
3262                                 la->eventTag, phba->fc_eventTag,
3263                                 phba->pport->port_state, vport->fc_flag);
3264                 /*
3265                  * The cmnd that triggered this will be waiting for this
3266                  * signal.
3267                  */
3268                 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
3269                 if (phba->wait_4_mlo_maint_flg) {
3270                         phba->wait_4_mlo_maint_flg = 0;
3271                         wake_up_interruptible(&phba->wait_4_mlo_m_q);
3272                 }
3273         }
3274
3275         if (bf_get(lpfc_mbx_read_top_fa, la)) {
3276                 if (bf_get(lpfc_mbx_read_top_mm, la))
3277                         lpfc_issue_clear_la(phba, vport);
3278                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3279                                 "1311 fa %d\n",
3280                                 bf_get(lpfc_mbx_read_top_fa, la));
3281         }
3282
3283 lpfc_mbx_cmpl_read_topology_free_mbuf:
3284         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3285         kfree(mp);
3286         mempool_free(pmb, phba->mbox_mem_pool);
3287         return;
3288 }
3289
3290 /*
3291  * This routine handles processing a REG_LOGIN mailbox
3292  * command upon completion. It is setup in the LPFC_MBOXQ
3293  * as the completion routine when the command is
3294  * handed off to the SLI layer.
3295  */
3296 void
3297 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3298 {
3299         struct lpfc_vport  *vport = pmb->vport;
3300         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3301         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3302         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3303
3304         pmb->context1 = NULL;
3305         pmb->context2 = NULL;
3306
3307         if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
3308                 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
3309
3310         if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL ||
3311             ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
3312                 /* We rcvd a rscn after issuing this
3313                  * mbox reg login, we may have cycled
3314                  * back through the state and be
3315                  * back at reg login state so this
3316                  * mbox needs to be ignored becase
3317                  * there is another reg login in
3318                  * process.
3319                  */
3320                 spin_lock_irq(shost->host_lock);
3321                 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
3322                 spin_unlock_irq(shost->host_lock);
3323         } else
3324                 /* Good status, call state machine */
3325                 lpfc_disc_state_machine(vport, ndlp, pmb,
3326                                 NLP_EVT_CMPL_REG_LOGIN);
3327
3328         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3329         kfree(mp);
3330         mempool_free(pmb, phba->mbox_mem_pool);
3331         /* decrement the node reference count held for this callback
3332          * function.
3333          */
3334         lpfc_nlp_put(ndlp);
3335
3336         return;
3337 }
3338
3339 static void
3340 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3341 {
3342         MAILBOX_t *mb = &pmb->u.mb;
3343         struct lpfc_vport *vport = pmb->vport;
3344         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3345
3346         switch (mb->mbxStatus) {
3347         case 0x0011:
3348         case 0x0020:
3349                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3350                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
3351                                  mb->mbxStatus);
3352                 break;
3353         /* If VPI is busy, reset the HBA */
3354         case 0x9700:
3355                 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3356                         "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n",
3357                         vport->vpi, mb->mbxStatus);
3358                 if (!(phba->pport->load_flag & FC_UNLOADING))
3359                         lpfc_workq_post_event(phba, NULL, NULL,
3360                                 LPFC_EVT_RESET_HBA);
3361         }
3362         spin_lock_irq(shost->host_lock);
3363         vport->vpi_state &= ~LPFC_VPI_REGISTERED;
3364         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3365         spin_unlock_irq(shost->host_lock);
3366         vport->unreg_vpi_cmpl = VPORT_OK;
3367         mempool_free(pmb, phba->mbox_mem_pool);
3368         lpfc_cleanup_vports_rrqs(vport, NULL);
3369         /*
3370          * This shost reference might have been taken at the beginning of
3371          * lpfc_vport_delete()
3372          */
3373         if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
3374                 scsi_host_put(shost);
3375 }
3376
3377 int
3378 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
3379 {
3380         struct lpfc_hba  *phba = vport->phba;
3381         LPFC_MBOXQ_t *mbox;
3382         int rc;
3383
3384         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3385         if (!mbox)
3386                 return 1;
3387
3388         lpfc_unreg_vpi(phba, vport->vpi, mbox);
3389         mbox->vport = vport;
3390         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
3391         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3392         if (rc == MBX_NOT_FINISHED) {
3393                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
3394                                  "1800 Could not issue unreg_vpi\n");
3395                 mempool_free(mbox, phba->mbox_mem_pool);
3396                 vport->unreg_vpi_cmpl = VPORT_ERROR;
3397                 return rc;
3398         }
3399         return 0;
3400 }
3401
3402 static void
3403 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3404 {
3405         struct lpfc_vport *vport = pmb->vport;
3406         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3407         MAILBOX_t *mb = &pmb->u.mb;
3408
3409         switch (mb->mbxStatus) {
3410         case 0x0011:
3411         case 0x9601:
3412         case 0x9602:
3413                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3414                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
3415                                  mb->mbxStatus);
3416                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3417                 spin_lock_irq(shost->host_lock);
3418                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
3419                 spin_unlock_irq(shost->host_lock);
3420                 vport->fc_myDID = 0;
3421                 goto out;
3422         }
3423
3424         spin_lock_irq(shost->host_lock);
3425         vport->vpi_state |= LPFC_VPI_REGISTERED;
3426         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3427         spin_unlock_irq(shost->host_lock);
3428         vport->num_disc_nodes = 0;
3429         /* go thru NPR list and issue ELS PLOGIs */
3430         if (vport->fc_npr_cnt)
3431                 lpfc_els_disc_plogi(vport);
3432
3433         if (!vport->num_disc_nodes) {
3434                 spin_lock_irq(shost->host_lock);
3435                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
3436                 spin_unlock_irq(shost->host_lock);
3437                 lpfc_can_disctmo(vport);
3438         }
3439         vport->port_state = LPFC_VPORT_READY;
3440
3441 out:
3442         mempool_free(pmb, phba->mbox_mem_pool);
3443         return;
3444 }
3445
3446 /**
3447  * lpfc_create_static_vport - Read HBA config region to create static vports.
3448  * @phba: pointer to lpfc hba data structure.
3449  *
3450  * This routine issue a DUMP mailbox command for config region 22 to get
3451  * the list of static vports to be created. The function create vports
3452  * based on the information returned from the HBA.
3453  **/
3454 void
3455 lpfc_create_static_vport(struct lpfc_hba *phba)
3456 {
3457         LPFC_MBOXQ_t *pmb = NULL;
3458         MAILBOX_t *mb;
3459         struct static_vport_info *vport_info;
3460         int rc = 0, i;
3461         struct fc_vport_identifiers vport_id;
3462         struct fc_vport *new_fc_vport;
3463         struct Scsi_Host *shost;
3464         struct lpfc_vport *vport;
3465         uint16_t offset = 0;
3466         uint8_t *vport_buff;
3467         struct lpfc_dmabuf *mp;
3468         uint32_t byte_count = 0;
3469
3470         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3471         if (!pmb) {
3472                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3473                                 "0542 lpfc_create_static_vport failed to"
3474                                 " allocate mailbox memory\n");
3475                 return;
3476         }
3477
3478         mb = &pmb->u.mb;
3479
3480         vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
3481         if (!vport_info) {
3482                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3483                                 "0543 lpfc_create_static_vport failed to"
3484                                 " allocate vport_info\n");
3485                 mempool_free(pmb, phba->mbox_mem_pool);
3486                 return;
3487         }
3488
3489         vport_buff = (uint8_t *) vport_info;
3490         do {
3491                 if (lpfc_dump_static_vport(phba, pmb, offset))
3492                         goto out;
3493
3494                 pmb->vport = phba->pport;
3495                 rc = lpfc_sli_issue_mbox_wait(phba, pmb, LPFC_MBOX_TMO);
3496
3497                 if ((rc != MBX_SUCCESS) || mb->mbxStatus) {
3498                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3499                                 "0544 lpfc_create_static_vport failed to"
3500                                 " issue dump mailbox command ret 0x%x "
3501                                 "status 0x%x\n",
3502                                 rc, mb->mbxStatus);
3503                         goto out;
3504                 }
3505
3506                 if (phba->sli_rev == LPFC_SLI_REV4) {
3507                         byte_count = pmb->u.mqe.un.mb_words[5];
3508                         mp = (struct lpfc_dmabuf *) pmb->context2;
3509                         if (byte_count > sizeof(struct static_vport_info) -
3510                                         offset)
3511                                 byte_count = sizeof(struct static_vport_info)
3512                                         - offset;
3513                         memcpy(vport_buff + offset, mp->virt, byte_count);
3514                         offset += byte_count;
3515                 } else {
3516                         if (mb->un.varDmp.word_cnt >
3517                                 sizeof(struct static_vport_info) - offset)
3518                                 mb->un.varDmp.word_cnt =
3519                                         sizeof(struct static_vport_info)
3520                                                 - offset;
3521                         byte_count = mb->un.varDmp.word_cnt;
3522                         lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
3523                                 vport_buff + offset,
3524                                 byte_count);
3525
3526                         offset += byte_count;
3527                 }
3528
3529         } while (byte_count &&
3530                 offset < sizeof(struct static_vport_info));
3531
3532
3533         if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
3534                 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
3535                         != VPORT_INFO_REV)) {
3536                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3537                         "0545 lpfc_create_static_vport bad"
3538                         " information header 0x%x 0x%x\n",
3539                         le32_to_cpu(vport_info->signature),
3540                         le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK);
3541
3542                 goto out;
3543         }
3544
3545         shost = lpfc_shost_from_vport(phba->pport);
3546
3547         for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
3548                 memset(&vport_id, 0, sizeof(vport_id));
3549                 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
3550                 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
3551                 if (!vport_id.port_name || !vport_id.node_name)
3552                         continue;
3553
3554                 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
3555                 vport_id.vport_type = FC_PORTTYPE_NPIV;
3556                 vport_id.disable = false;
3557                 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
3558
3559                 if (!new_fc_vport) {
3560                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3561                                 "0546 lpfc_create_static_vport failed to"
3562                                 " create vport\n");
3563                         continue;
3564                 }
3565
3566                 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
3567                 vport->vport_flag |= STATIC_VPORT;
3568         }
3569
3570 out:
3571         kfree(vport_info);
3572         if (rc != MBX_TIMEOUT) {
3573                 if (pmb->context2) {
3574                         mp = (struct lpfc_dmabuf *) pmb->context2;
3575                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3576                         kfree(mp);
3577                 }
3578                 mempool_free(pmb, phba->mbox_mem_pool);
3579         }
3580
3581         return;
3582 }
3583
3584 /*
3585  * This routine handles processing a Fabric 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_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3592 {
3593         struct lpfc_vport *vport = pmb->vport;
3594         MAILBOX_t *mb = &pmb->u.mb;
3595         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3596         struct lpfc_nodelist *ndlp;
3597
3598         ndlp = (struct lpfc_nodelist *) pmb->context2;
3599         pmb->context1 = NULL;
3600         pmb->context2 = NULL;
3601
3602         if (mb->mbxStatus) {
3603                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
3604                                  "0258 Register Fabric login error: 0x%x\n",
3605                                  mb->mbxStatus);
3606                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3607                 kfree(mp);
3608                 mempool_free(pmb, phba->mbox_mem_pool);
3609
3610                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3611                         /* FLOGI failed, use loop map to make discovery list */
3612                         lpfc_disc_list_loopmap(vport);
3613
3614                         /* Start discovery */
3615                         lpfc_disc_start(vport);
3616                         /* Decrement the reference count to ndlp after the
3617                          * reference to the ndlp are done.
3618                          */
3619                         lpfc_nlp_put(ndlp);
3620                         return;
3621                 }
3622
3623                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3624                 /* Decrement the reference count to ndlp after the reference
3625                  * to the ndlp are done.
3626                  */
3627                 lpfc_nlp_put(ndlp);
3628                 return;
3629         }
3630
3631         if (phba->sli_rev < LPFC_SLI_REV4)
3632                 ndlp->nlp_rpi = mb->un.varWords[0];
3633         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3634         ndlp->nlp_type |= NLP_FABRIC;
3635         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3636
3637         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3638                 /* when physical port receive logo donot start
3639                  * vport discovery */
3640                 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
3641                         lpfc_start_fdiscs(phba);
3642                 else
3643                         vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ;
3644                 lpfc_do_scr_ns_plogi(phba, vport);
3645         }
3646
3647         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3648         kfree(mp);
3649         mempool_free(pmb, phba->mbox_mem_pool);
3650
3651         /* Drop the reference count from the mbox at the end after
3652          * all the current reference to the ndlp have been done.
3653          */
3654         lpfc_nlp_put(ndlp);
3655         return;
3656 }
3657
3658 /*
3659  * This routine handles processing a NameServer REG_LOGIN mailbox
3660  * command upon completion. It is setup in the LPFC_MBOXQ
3661  * as the completion routine when the command is
3662  * handed off to the SLI layer.
3663  */
3664 void
3665 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3666 {
3667         MAILBOX_t *mb = &pmb->u.mb;
3668         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3669         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3670         struct lpfc_vport *vport = pmb->vport;
3671
3672         pmb->context1 = NULL;
3673         pmb->context2 = NULL;
3674
3675         if (mb->mbxStatus) {
3676 out:
3677                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3678                                  "0260 Register NameServer error: 0x%x\n",
3679                                  mb->mbxStatus);
3680                 /* decrement the node reference count held for this
3681                  * callback function.
3682                  */
3683                 lpfc_nlp_put(ndlp);
3684                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3685                 kfree(mp);
3686                 mempool_free(pmb, phba->mbox_mem_pool);
3687
3688                 /* If no other thread is using the ndlp, free it */
3689                 lpfc_nlp_not_used(ndlp);
3690
3691                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3692                         /*
3693                          * RegLogin failed, use loop map to make discovery
3694                          * list
3695                          */
3696                         lpfc_disc_list_loopmap(vport);
3697
3698                         /* Start discovery */
3699                         lpfc_disc_start(vport);
3700                         return;
3701                 }
3702                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3703                 return;
3704         }
3705
3706         if (phba->sli_rev < LPFC_SLI_REV4)
3707                 ndlp->nlp_rpi = mb->un.varWords[0];
3708         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3709         ndlp->nlp_type |= NLP_FABRIC;
3710         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3711
3712         if (vport->port_state < LPFC_VPORT_READY) {
3713                 /* Link up discovery requires Fabric registration. */
3714                 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
3715                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
3716                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
3717                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
3718                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
3719
3720                 /* Issue SCR just before NameServer GID_FT Query */
3721                 lpfc_issue_els_scr(vport, SCR_DID, 0);
3722         }
3723
3724         vport->fc_ns_retry = 0;
3725         /* Good status, issue CT Request to NameServer */
3726         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
3727                 /* Cannot issue NameServer Query, so finish up discovery */
3728                 goto out;
3729         }
3730
3731         /* decrement the node reference count held for this
3732          * callback function.
3733          */
3734         lpfc_nlp_put(ndlp);
3735         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3736         kfree(mp);
3737         mempool_free(pmb, phba->mbox_mem_pool);
3738
3739         return;
3740 }
3741
3742 static void
3743 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3744 {
3745         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3746         struct fc_rport  *rport;
3747         struct lpfc_rport_data *rdata;
3748         struct fc_rport_identifiers rport_ids;
3749         struct lpfc_hba  *phba = vport->phba;
3750
3751         /* Remote port has reappeared. Re-register w/ FC transport */
3752         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
3753         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
3754         rport_ids.port_id = ndlp->nlp_DID;
3755         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
3756
3757         /*
3758          * We leave our node pointer in rport->dd_data when we unregister a
3759          * FCP target port.  But fc_remote_port_add zeros the space to which
3760          * rport->dd_data points.  So, if we're reusing a previously
3761          * registered port, drop the reference that we took the last time we
3762          * registered the port.
3763          */
3764         if (ndlp->rport && ndlp->rport->dd_data &&
3765             ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
3766                 lpfc_nlp_put(ndlp);
3767
3768         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
3769                 "rport add:       did:x%x flg:x%x type x%x",
3770                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3771
3772         /* Don't add the remote port if unloading. */
3773         if (vport->load_flag & FC_UNLOADING)
3774                 return;
3775
3776         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
3777         if (!rport || !get_device(&rport->dev)) {
3778                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
3779                            "Warning: fc_remote_port_add failed\n");
3780                 return;
3781         }
3782
3783         /* initialize static port data */
3784         rport->maxframe_size = ndlp->nlp_maxframe;
3785         rport->supported_classes = ndlp->nlp_class_sup;
3786         rdata = rport->dd_data;
3787         rdata->pnode = lpfc_nlp_get(ndlp);
3788
3789         if (ndlp->nlp_type & NLP_FCP_TARGET)
3790                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
3791         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
3792                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
3793
3794         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
3795                 fc_remote_port_rolechg(rport, rport_ids.roles);
3796
3797         if ((rport->scsi_target_id != -1) &&
3798             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
3799                 ndlp->nlp_sid = rport->scsi_target_id;
3800         }
3801         return;
3802 }
3803
3804 static void
3805 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
3806 {
3807         struct fc_rport *rport = ndlp->rport;
3808
3809         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
3810                 "rport delete:    did:x%x flg:x%x type x%x",
3811                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3812
3813         fc_remote_port_delete(rport);
3814
3815         return;
3816 }
3817
3818 static void
3819 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
3820 {
3821         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3822
3823         spin_lock_irq(shost->host_lock);
3824         switch (state) {
3825         case NLP_STE_UNUSED_NODE:
3826                 vport->fc_unused_cnt += count;
3827                 break;
3828         case NLP_STE_PLOGI_ISSUE:
3829                 vport->fc_plogi_cnt += count;
3830                 break;
3831         case NLP_STE_ADISC_ISSUE:
3832                 vport->fc_adisc_cnt += count;
3833                 break;
3834         case NLP_STE_REG_LOGIN_ISSUE:
3835                 vport->fc_reglogin_cnt += count;
3836                 break;
3837         case NLP_STE_PRLI_ISSUE:
3838                 vport->fc_prli_cnt += count;
3839                 break;
3840         case NLP_STE_UNMAPPED_NODE:
3841                 vport->fc_unmap_cnt += count;
3842                 break;
3843         case NLP_STE_MAPPED_NODE:
3844                 vport->fc_map_cnt += count;
3845                 break;
3846         case NLP_STE_NPR_NODE:
3847                 vport->fc_npr_cnt += count;
3848                 break;
3849         }
3850         spin_unlock_irq(shost->host_lock);
3851 }
3852
3853 static void
3854 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3855                        int old_state, int new_state)
3856 {
3857         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3858
3859         if (new_state == NLP_STE_UNMAPPED_NODE) {
3860                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
3861                 ndlp->nlp_type |= NLP_FC_NODE;
3862         }
3863         if (new_state == NLP_STE_MAPPED_NODE)
3864                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
3865         if (new_state == NLP_STE_NPR_NODE)
3866                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
3867
3868         /* Transport interface */
3869         if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
3870                             old_state == NLP_STE_UNMAPPED_NODE)) {
3871                 vport->phba->nport_event_cnt++;
3872                 lpfc_unregister_remote_port(ndlp);
3873         }
3874
3875         if (new_state ==  NLP_STE_MAPPED_NODE ||
3876             new_state == NLP_STE_UNMAPPED_NODE) {
3877                 vport->phba->nport_event_cnt++;
3878                 /*
3879                  * Tell the fc transport about the port, if we haven't
3880                  * already. If we have, and it's a scsi entity, be
3881                  * sure to unblock any attached scsi devices
3882                  */
3883                 lpfc_register_remote_port(vport, ndlp);
3884         }
3885         if ((new_state ==  NLP_STE_MAPPED_NODE) &&
3886                 (vport->stat_data_enabled)) {
3887                 /*
3888                  * A new target is discovered, if there is no buffer for
3889                  * statistical data collection allocate buffer.
3890                  */
3891                 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
3892                                          sizeof(struct lpfc_scsicmd_bkt),
3893                                          GFP_KERNEL);
3894
3895                 if (!ndlp->lat_data)
3896                         lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3897                                 "0286 lpfc_nlp_state_cleanup failed to "
3898                                 "allocate statistical data buffer DID "
3899                                 "0x%x\n", ndlp->nlp_DID);
3900         }
3901         /*
3902          * if we added to Mapped list, but the remote port
3903          * registration failed or assigned a target id outside
3904          * our presentable range - move the node to the
3905          * Unmapped List
3906          */
3907         if (new_state == NLP_STE_MAPPED_NODE &&
3908             (!ndlp->rport ||
3909              ndlp->rport->scsi_target_id == -1 ||
3910              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
3911                 spin_lock_irq(shost->host_lock);
3912                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
3913                 spin_unlock_irq(shost->host_lock);
3914                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3915         }
3916 }
3917
3918 static char *
3919 lpfc_nlp_state_name(char *buffer, size_t size, int state)
3920 {
3921         static char *states[] = {
3922                 [NLP_STE_UNUSED_NODE] = "UNUSED",
3923                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
3924                 [NLP_STE_ADISC_ISSUE] = "ADISC",
3925                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
3926                 [NLP_STE_PRLI_ISSUE] = "PRLI",
3927                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
3928                 [NLP_STE_MAPPED_NODE] = "MAPPED",
3929                 [NLP_STE_NPR_NODE] = "NPR",
3930         };
3931
3932         if (state < NLP_STE_MAX_STATE && states[state])
3933                 strlcpy(buffer, states[state], size);
3934         else
3935                 snprintf(buffer, size, "unknown (%d)", state);
3936         return buffer;
3937 }
3938
3939 void
3940 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3941                    int state)
3942 {
3943         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3944         int  old_state = ndlp->nlp_state;
3945         char name1[16], name2[16];
3946
3947         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3948                          "0904 NPort state transition x%06x, %s -> %s\n",
3949                          ndlp->nlp_DID,
3950                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
3951                          lpfc_nlp_state_name(name2, sizeof(name2), state));
3952
3953         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
3954                 "node statechg    did:x%x old:%d ste:%d",
3955                 ndlp->nlp_DID, old_state, state);
3956
3957         if (old_state == NLP_STE_NPR_NODE &&
3958             state != NLP_STE_NPR_NODE)
3959                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
3960         if (old_state == NLP_STE_UNMAPPED_NODE) {
3961                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
3962                 ndlp->nlp_type &= ~NLP_FC_NODE;
3963         }
3964
3965         if (list_empty(&ndlp->nlp_listp)) {
3966                 spin_lock_irq(shost->host_lock);
3967                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
3968                 spin_unlock_irq(shost->host_lock);
3969         } else if (old_state)
3970                 lpfc_nlp_counters(vport, old_state, -1);
3971
3972         ndlp->nlp_state = state;
3973         lpfc_nlp_counters(vport, state, 1);
3974         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
3975 }
3976
3977 void
3978 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3979 {
3980         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3981
3982         if (list_empty(&ndlp->nlp_listp)) {
3983                 spin_lock_irq(shost->host_lock);
3984                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
3985                 spin_unlock_irq(shost->host_lock);
3986         }
3987 }
3988
3989 void
3990 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3991 {
3992         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3993
3994         lpfc_cancel_retry_delay_tmo(vport, ndlp);
3995         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
3996                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
3997         spin_lock_irq(shost->host_lock);
3998         list_del_init(&ndlp->nlp_listp);
3999         spin_unlock_irq(shost->host_lock);
4000         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4001                                 NLP_STE_UNUSED_NODE);
4002 }
4003
4004 static void
4005 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4006 {
4007         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4008         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4009                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4010         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4011                                 NLP_STE_UNUSED_NODE);
4012 }
4013 /**
4014  * lpfc_initialize_node - Initialize all fields of node object
4015  * @vport: Pointer to Virtual Port object.
4016  * @ndlp: Pointer to FC node object.
4017  * @did: FC_ID of the node.
4018  *
4019  * This function is always called when node object need to be initialized.
4020  * It initializes all the fields of the node object. Although the reference
4021  * to phba from @ndlp can be obtained indirectly through it's reference to
4022  * @vport, a direct reference to phba is taken here by @ndlp. This is due
4023  * to the life-span of the @ndlp might go beyond the existence of @vport as
4024  * the final release of ndlp is determined by its reference count. And, the
4025  * operation on @ndlp needs the reference to phba.
4026  **/
4027 static inline void
4028 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4029         uint32_t did)
4030 {
4031         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
4032         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
4033         init_timer(&ndlp->nlp_delayfunc);
4034         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
4035         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
4036         ndlp->nlp_DID = did;
4037         ndlp->vport = vport;
4038         ndlp->phba = vport->phba;
4039         ndlp->nlp_sid = NLP_NO_SID;
4040         kref_init(&ndlp->kref);
4041         NLP_INT_NODE_ACT(ndlp);
4042         atomic_set(&ndlp->cmd_pending, 0);
4043         ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
4044         if (vport->phba->sli_rev == LPFC_SLI_REV4)
4045                 ndlp->nlp_rpi = lpfc_sli4_alloc_rpi(vport->phba);
4046 }
4047
4048 struct lpfc_nodelist *
4049 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4050                  int state)
4051 {
4052         struct lpfc_hba *phba = vport->phba;
4053         uint32_t did;
4054         unsigned long flags;
4055
4056         if (!ndlp)
4057                 return NULL;
4058
4059         spin_lock_irqsave(&phba->ndlp_lock, flags);
4060         /* The ndlp should not be in memory free mode */
4061         if (NLP_CHK_FREE_REQ(ndlp)) {
4062                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4063                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4064                                 "0277 lpfc_enable_node: ndlp:x%p "
4065                                 "usgmap:x%x refcnt:%d\n",
4066                                 (void *)ndlp, ndlp->nlp_usg_map,
4067                                 atomic_read(&ndlp->kref.refcount));
4068                 return NULL;
4069         }
4070         /* The ndlp should not already be in active mode */
4071         if (NLP_CHK_NODE_ACT(ndlp)) {
4072                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4073                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4074                                 "0278 lpfc_enable_node: ndlp:x%p "
4075                                 "usgmap:x%x refcnt:%d\n",
4076                                 (void *)ndlp, ndlp->nlp_usg_map,
4077                                 atomic_read(&ndlp->kref.refcount));
4078                 return NULL;
4079         }
4080
4081         /* Keep the original DID */
4082         did = ndlp->nlp_DID;
4083
4084         /* re-initialize ndlp except of ndlp linked list pointer */
4085         memset((((char *)ndlp) + sizeof (struct list_head)), 0,
4086                 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
4087         lpfc_initialize_node(vport, ndlp, did);
4088
4089         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4090
4091         if (state != NLP_STE_UNUSED_NODE)
4092                 lpfc_nlp_set_state(vport, ndlp, state);
4093
4094         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4095                 "node enable:       did:x%x",
4096                 ndlp->nlp_DID, 0, 0);
4097         return ndlp;
4098 }
4099
4100 void
4101 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4102 {
4103         /*
4104          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
4105          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
4106          * the ndlp from the vport. The ndlp marked as UNUSED on the list
4107          * until ALL other outstanding threads have completed. We check
4108          * that the ndlp not already in the UNUSED state before we proceed.
4109          */
4110         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
4111                 return;
4112         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
4113         if (vport->phba->sli_rev == LPFC_SLI_REV4)
4114                 lpfc_cleanup_vports_rrqs(vport, ndlp);
4115         lpfc_nlp_put(ndlp);
4116         return;
4117 }
4118
4119 /*
4120  * Start / ReStart rescue timer for Discovery / RSCN handling
4121  */
4122 void
4123 lpfc_set_disctmo(struct lpfc_vport *vport)
4124 {
4125         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4126         struct lpfc_hba  *phba = vport->phba;
4127         uint32_t tmo;
4128
4129         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
4130                 /* For FAN, timeout should be greater than edtov */
4131                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
4132         } else {
4133                 /* Normal discovery timeout should be > than ELS/CT timeout
4134                  * FC spec states we need 3 * ratov for CT requests
4135                  */
4136                 tmo = ((phba->fc_ratov * 3) + 3);
4137         }
4138
4139
4140         if (!timer_pending(&vport->fc_disctmo)) {
4141                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4142                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
4143                         tmo, vport->port_state, vport->fc_flag);
4144         }
4145
4146         mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
4147         spin_lock_irq(shost->host_lock);
4148         vport->fc_flag |= FC_DISC_TMO;
4149         spin_unlock_irq(shost->host_lock);
4150
4151         /* Start Discovery Timer state <hba_state> */
4152         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4153                          "0247 Start Discovery Timer state x%x "
4154                          "Data: x%x x%lx x%x x%x\n",
4155                          vport->port_state, tmo,
4156                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
4157                          vport->fc_adisc_cnt);
4158
4159         return;
4160 }
4161
4162 /*
4163  * Cancel rescue timer for Discovery / RSCN handling
4164  */
4165 int
4166 lpfc_can_disctmo(struct lpfc_vport *vport)
4167 {
4168         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4169         unsigned long iflags;
4170
4171         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4172                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
4173                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
4174
4175         /* Turn off discovery timer if its running */
4176         if (vport->fc_flag & FC_DISC_TMO) {
4177                 spin_lock_irqsave(shost->host_lock, iflags);
4178                 vport->fc_flag &= ~FC_DISC_TMO;
4179                 spin_unlock_irqrestore(shost->host_lock, iflags);
4180                 del_timer_sync(&vport->fc_disctmo);
4181                 spin_lock_irqsave(&vport->work_port_lock, iflags);
4182                 vport->work_port_events &= ~WORKER_DISC_TMO;
4183                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
4184         }
4185
4186         /* Cancel Discovery Timer state <hba_state> */
4187         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4188                          "0248 Cancel Discovery Timer state x%x "
4189                          "Data: x%x x%x x%x\n",
4190                          vport->port_state, vport->fc_flag,
4191                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
4192         return 0;
4193 }
4194
4195 /*
4196  * Check specified ring for outstanding IOCB on the SLI queue
4197  * Return true if iocb matches the specified nport
4198  */
4199 int
4200 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
4201                     struct lpfc_sli_ring *pring,
4202                     struct lpfc_iocbq *iocb,
4203                     struct lpfc_nodelist *ndlp)
4204 {
4205         struct lpfc_sli *psli = &phba->sli;
4206         IOCB_t *icmd = &iocb->iocb;
4207         struct lpfc_vport    *vport = ndlp->vport;
4208
4209         if (iocb->vport != vport)
4210                 return 0;
4211
4212         if (pring->ringno == LPFC_ELS_RING) {
4213                 switch (icmd->ulpCommand) {
4214                 case CMD_GEN_REQUEST64_CR:
4215                         if (iocb->context_un.ndlp == ndlp)
4216                                 return 1;
4217                 case CMD_ELS_REQUEST64_CR:
4218                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
4219                                 return 1;
4220                 case CMD_XMIT_ELS_RSP64_CX:
4221                         if (iocb->context1 == (uint8_t *) ndlp)
4222                                 return 1;
4223                 }
4224         } else if (pring->ringno == psli->extra_ring) {
4225
4226         } else if (pring->ringno == psli->fcp_ring) {
4227                 /* Skip match check if waiting to relogin to FCP target */
4228                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
4229                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
4230                         return 0;
4231                 }
4232                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
4233                         return 1;
4234                 }
4235         } else if (pring->ringno == psli->next_ring) {
4236
4237         }
4238         return 0;
4239 }
4240
4241 /*
4242  * Free resources / clean up outstanding I/Os
4243  * associated with nlp_rpi in the LPFC_NODELIST entry.
4244  */
4245 static int
4246 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
4247 {
4248         LIST_HEAD(completions);
4249         struct lpfc_sli *psli;
4250         struct lpfc_sli_ring *pring;
4251         struct lpfc_iocbq *iocb, *next_iocb;
4252         uint32_t i;
4253
4254         lpfc_fabric_abort_nport(ndlp);
4255
4256         /*
4257          * Everything that matches on txcmplq will be returned
4258          * by firmware with a no rpi error.
4259          */
4260         psli = &phba->sli;
4261         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
4262                 /* Now process each ring */
4263                 for (i = 0; i < psli->num_rings; i++) {
4264                         pring = &psli->ring[i];
4265
4266                         spin_lock_irq(&phba->hbalock);
4267                         list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
4268                                                  list) {
4269                                 /*
4270                                  * Check to see if iocb matches the nport we are
4271                                  * looking for
4272                                  */
4273                                 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
4274                                                          ndlp))) {
4275                                         /* It matches, so deque and call compl
4276                                            with an error */
4277                                         list_move_tail(&iocb->list,
4278                                                        &completions);
4279                                         pring->txq_cnt--;
4280                                 }
4281                         }
4282                         spin_unlock_irq(&phba->hbalock);
4283                 }
4284         }
4285
4286         /* Cancel all the IOCBs from the completions list */
4287         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
4288                               IOERR_SLI_ABORTED);
4289
4290         return 0;
4291 }
4292
4293 /*
4294  * Free rpi associated with LPFC_NODELIST entry.
4295  * This routine is called from lpfc_freenode(), when we are removing
4296  * a LPFC_NODELIST entry. It is also called if the driver initiates a
4297  * LOGO that completes successfully, and we are waiting to PLOGI back
4298  * to the remote NPort. In addition, it is called after we receive
4299  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
4300  * we are waiting to PLOGI back to the remote NPort.
4301  */
4302 int
4303 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4304 {
4305         struct lpfc_hba *phba = vport->phba;
4306         LPFC_MBOXQ_t    *mbox;
4307         int rc;
4308         uint16_t rpi;
4309
4310         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
4311                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4312                 if (mbox) {
4313                         /* SLI4 ports require the physical rpi value. */
4314                         rpi = ndlp->nlp_rpi;
4315                         if (phba->sli_rev == LPFC_SLI_REV4)
4316                                 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
4317                         lpfc_unreg_login(phba, vport->vpi, rpi, mbox);
4318                         mbox->vport = vport;
4319                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4320                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4321                         if (rc == MBX_NOT_FINISHED)
4322                                 mempool_free(mbox, phba->mbox_mem_pool);
4323                 }
4324                 lpfc_no_rpi(phba, ndlp);
4325
4326                 if (phba->sli_rev != LPFC_SLI_REV4)
4327                         ndlp->nlp_rpi = 0;
4328                 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
4329                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
4330                 return 1;
4331         }
4332         return 0;
4333 }
4334
4335 /**
4336  * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
4337  * @phba: pointer to lpfc hba data structure.
4338  *
4339  * This routine is invoked to unregister all the currently registered RPIs
4340  * to the HBA.
4341  **/
4342 void
4343 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
4344 {
4345         struct lpfc_vport **vports;
4346         struct lpfc_nodelist *ndlp;
4347         struct Scsi_Host *shost;
4348         int i;
4349
4350         vports = lpfc_create_vport_work_array(phba);
4351         if (!vports) {
4352                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
4353                         "2884 Vport array allocation failed \n");
4354                 return;
4355         }
4356         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4357                 shost = lpfc_shost_from_vport(vports[i]);
4358                 spin_lock_irq(shost->host_lock);
4359                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
4360                         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
4361                                 /* The mempool_alloc might sleep */
4362                                 spin_unlock_irq(shost->host_lock);
4363                                 lpfc_unreg_rpi(vports[i], ndlp);
4364                                 spin_lock_irq(shost->host_lock);
4365                         }
4366                 }
4367                 spin_unlock_irq(shost->host_lock);
4368         }
4369         lpfc_destroy_vport_work_array(phba, vports);
4370 }
4371
4372 void
4373 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
4374 {
4375         struct lpfc_hba  *phba  = vport->phba;
4376         LPFC_MBOXQ_t     *mbox;
4377         int rc;
4378
4379         if (phba->sli_rev == LPFC_SLI_REV4) {
4380                 lpfc_sli4_unreg_all_rpis(vport);
4381                 return;
4382         }
4383
4384         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4385         if (mbox) {
4386                 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT,
4387                                  mbox);
4388                 mbox->vport = vport;
4389                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4390                 mbox->context1 = NULL;
4391                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
4392                 if (rc != MBX_TIMEOUT)
4393                         mempool_free(mbox, phba->mbox_mem_pool);
4394
4395                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
4396                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
4397                                 "1836 Could not issue "
4398                                 "unreg_login(all_rpis) status %d\n", rc);
4399         }
4400 }
4401
4402 void
4403 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
4404 {
4405         struct lpfc_hba  *phba  = vport->phba;
4406         LPFC_MBOXQ_t     *mbox;
4407         int rc;
4408
4409         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4410         if (mbox) {
4411                 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS,
4412                                mbox);
4413                 mbox->vport = vport;
4414                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4415                 mbox->context1 = NULL;
4416                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
4417                 if (rc != MBX_TIMEOUT)
4418                         mempool_free(mbox, phba->mbox_mem_pool);
4419
4420                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
4421                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
4422                                          "1815 Could not issue "
4423                                          "unreg_did (default rpis) status %d\n",
4424                                          rc);
4425         }
4426 }
4427
4428 /*
4429  * Free resources associated with LPFC_NODELIST entry
4430  * so it can be freed.
4431  */
4432 static int
4433 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4434 {
4435         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4436         struct lpfc_hba  *phba = vport->phba;
4437         LPFC_MBOXQ_t *mb, *nextmb;
4438         struct lpfc_dmabuf *mp;
4439
4440         /* Cleanup node for NPort <nlp_DID> */
4441         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4442                          "0900 Cleanup node for NPort x%x "
4443                          "Data: x%x x%x x%x\n",
4444                          ndlp->nlp_DID, ndlp->nlp_flag,
4445                          ndlp->nlp_state, ndlp->nlp_rpi);
4446         if (NLP_CHK_FREE_REQ(ndlp)) {
4447                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4448                                 "0280 lpfc_cleanup_node: ndlp:x%p "
4449                                 "usgmap:x%x refcnt:%d\n",
4450                                 (void *)ndlp, ndlp->nlp_usg_map,
4451                                 atomic_read(&ndlp->kref.refcount));
4452                 lpfc_dequeue_node(vport, ndlp);
4453         } else {
4454                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4455                                 "0281 lpfc_cleanup_node: ndlp:x%p "
4456                                 "usgmap:x%x refcnt:%d\n",
4457                                 (void *)ndlp, ndlp->nlp_usg_map,
4458                                 atomic_read(&ndlp->kref.refcount));
4459                 lpfc_disable_node(vport, ndlp);
4460         }
4461
4462         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
4463         if ((mb = phba->sli.mbox_active)) {
4464                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
4465                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
4466                         mb->context2 = NULL;
4467                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4468                 }
4469         }
4470
4471         spin_lock_irq(&phba->hbalock);
4472         /* Cleanup REG_LOGIN completions which are not yet processed */
4473         list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
4474                 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) ||
4475                         (ndlp != (struct lpfc_nodelist *) mb->context2))
4476                         continue;
4477
4478                 mb->context2 = NULL;
4479                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4480         }
4481
4482         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
4483                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
4484                     (ndlp == (struct lpfc_nodelist *) mb->context2)) {
4485                         mp = (struct lpfc_dmabuf *) (mb->context1);
4486                         if (mp) {
4487                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
4488                                 kfree(mp);
4489                         }
4490                         list_del(&mb->list);
4491                         mempool_free(mb, phba->mbox_mem_pool);
4492                         /* We shall not invoke the lpfc_nlp_put to decrement
4493                          * the ndlp reference count as we are in the process
4494                          * of lpfc_nlp_release.
4495                          */
4496                 }
4497         }
4498         spin_unlock_irq(&phba->hbalock);
4499
4500         lpfc_els_abort(phba, ndlp);
4501
4502         spin_lock_irq(shost->host_lock);
4503         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
4504         spin_unlock_irq(shost->host_lock);
4505
4506         ndlp->nlp_last_elscmd = 0;
4507         del_timer_sync(&ndlp->nlp_delayfunc);
4508
4509         list_del_init(&ndlp->els_retry_evt.evt_listp);
4510         list_del_init(&ndlp->dev_loss_evt.evt_listp);
4511         lpfc_cleanup_vports_rrqs(vport, ndlp);
4512         lpfc_unreg_rpi(vport, ndlp);
4513
4514         return 0;
4515 }
4516
4517 /*
4518  * Check to see if we can free the nlp back to the freelist.
4519  * If we are in the middle of using the nlp in the discovery state
4520  * machine, defer the free till we reach the end of the state machine.
4521  */
4522 static void
4523 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4524 {
4525         struct lpfc_hba  *phba = vport->phba;
4526         struct lpfc_rport_data *rdata;
4527         LPFC_MBOXQ_t *mbox;
4528         int rc;
4529
4530         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4531         if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
4532             !(ndlp->nlp_flag & NLP_REG_LOGIN_SEND) &&
4533             !(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
4534                 /* For this case we need to cleanup the default rpi
4535                  * allocated by the firmware.
4536                  */
4537                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
4538                         != NULL) {
4539                         rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID,
4540                             (uint8_t *) &vport->fc_sparam, mbox, ndlp->nlp_rpi);
4541                         if (rc) {
4542                                 mempool_free(mbox, phba->mbox_mem_pool);
4543                         }
4544                         else {
4545                                 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
4546                                 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
4547                                 mbox->vport = vport;
4548                                 mbox->context2 = NULL;
4549                                 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4550                                 if (rc == MBX_NOT_FINISHED) {
4551                                         mempool_free(mbox, phba->mbox_mem_pool);
4552                                 }
4553                         }
4554                 }
4555         }
4556         lpfc_cleanup_node(vport, ndlp);
4557
4558         /*
4559          * We can get here with a non-NULL ndlp->rport because when we
4560          * unregister a rport we don't break the rport/node linkage.  So if we
4561          * do, make sure we don't leaving any dangling pointers behind.
4562          */
4563         if (ndlp->rport) {
4564                 rdata = ndlp->rport->dd_data;
4565                 rdata->pnode = NULL;
4566                 ndlp->rport = NULL;
4567         }
4568 }
4569
4570 static int
4571 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4572               uint32_t did)
4573 {
4574         D_ID mydid, ndlpdid, matchdid;
4575
4576         if (did == Bcast_DID)
4577                 return 0;
4578
4579         /* First check for Direct match */
4580         if (ndlp->nlp_DID == did)
4581                 return 1;
4582
4583         /* Next check for area/domain identically equals 0 match */
4584         mydid.un.word = vport->fc_myDID;
4585         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
4586                 return 0;
4587         }
4588
4589         matchdid.un.word = did;
4590         ndlpdid.un.word = ndlp->nlp_DID;
4591         if (matchdid.un.b.id == ndlpdid.un.b.id) {
4592                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
4593                     (mydid.un.b.area == matchdid.un.b.area)) {
4594                         if ((ndlpdid.un.b.domain == 0) &&
4595                             (ndlpdid.un.b.area == 0)) {
4596                                 if (ndlpdid.un.b.id)
4597                                         return 1;
4598                         }
4599                         return 0;
4600                 }
4601
4602                 matchdid.un.word = ndlp->nlp_DID;
4603                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
4604                     (mydid.un.b.area == ndlpdid.un.b.area)) {
4605                         if ((matchdid.un.b.domain == 0) &&
4606                             (matchdid.un.b.area == 0)) {
4607                                 if (matchdid.un.b.id)
4608                                         return 1;
4609                         }
4610                 }
4611         }
4612         return 0;
4613 }
4614
4615 /* Search for a nodelist entry */
4616 static struct lpfc_nodelist *
4617 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
4618 {
4619         struct lpfc_nodelist *ndlp;
4620         uint32_t data1;
4621
4622         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4623                 if (lpfc_matchdid(vport, ndlp, did)) {
4624                         data1 = (((uint32_t) ndlp->nlp_state << 24) |
4625                                  ((uint32_t) ndlp->nlp_xri << 16) |
4626                                  ((uint32_t) ndlp->nlp_type << 8) |
4627                                  ((uint32_t) ndlp->nlp_rpi & 0xff));
4628                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4629                                          "0929 FIND node DID "
4630                                          "Data: x%p x%x x%x x%x\n",
4631                                          ndlp, ndlp->nlp_DID,
4632                                          ndlp->nlp_flag, data1);
4633                         return ndlp;
4634                 }
4635         }
4636
4637         /* FIND node did <did> NOT FOUND */
4638         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4639                          "0932 FIND node did x%x NOT FOUND.\n", did);
4640         return NULL;
4641 }
4642
4643 struct lpfc_nodelist *
4644 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
4645 {
4646         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4647         struct lpfc_nodelist *ndlp;
4648         unsigned long iflags;
4649
4650         spin_lock_irqsave(shost->host_lock, iflags);
4651         ndlp = __lpfc_findnode_did(vport, did);
4652         spin_unlock_irqrestore(shost->host_lock, iflags);
4653         return ndlp;
4654 }
4655
4656 struct lpfc_nodelist *
4657 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
4658 {
4659         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4660         struct lpfc_nodelist *ndlp;
4661
4662         ndlp = lpfc_findnode_did(vport, did);
4663         if (!ndlp) {
4664                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
4665                     lpfc_rscn_payload_check(vport, did) == 0)
4666                         return NULL;
4667                 ndlp = (struct lpfc_nodelist *)
4668                      mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
4669                 if (!ndlp)
4670                         return NULL;
4671                 lpfc_nlp_init(vport, ndlp, did);
4672                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
4673                 spin_lock_irq(shost->host_lock);
4674                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4675                 spin_unlock_irq(shost->host_lock);
4676                 return ndlp;
4677         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
4678                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
4679                 if (!ndlp)
4680                         return NULL;
4681                 spin_lock_irq(shost->host_lock);
4682                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4683                 spin_unlock_irq(shost->host_lock);
4684                 return ndlp;
4685         }
4686
4687         if ((vport->fc_flag & FC_RSCN_MODE) &&
4688             !(vport->fc_flag & FC_NDISC_ACTIVE)) {
4689                 if (lpfc_rscn_payload_check(vport, did)) {
4690                         /* If we've already received a PLOGI from this NPort
4691                          * we don't need to try to discover it again.
4692                          */
4693                         if (ndlp->nlp_flag & NLP_RCV_PLOGI)
4694                                 return NULL;
4695
4696                         /* Since this node is marked for discovery,
4697                          * delay timeout is not needed.
4698                          */
4699                         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4700                         spin_lock_irq(shost->host_lock);
4701                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4702                         spin_unlock_irq(shost->host_lock);
4703                 } else
4704                         ndlp = NULL;
4705         } else {
4706                 /* If we've already received a PLOGI from this NPort,
4707                  * or we are already in the process of discovery on it,
4708                  * we don't need to try to discover it again.
4709                  */
4710                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
4711                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
4712                     ndlp->nlp_flag & NLP_RCV_PLOGI)
4713                         return NULL;
4714                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
4715                 spin_lock_irq(shost->host_lock);
4716                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4717                 spin_unlock_irq(shost->host_lock);
4718         }
4719         return ndlp;
4720 }
4721
4722 /* Build a list of nodes to discover based on the loopmap */
4723 void
4724 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
4725 {
4726         struct lpfc_hba  *phba = vport->phba;
4727         int j;
4728         uint32_t alpa, index;
4729
4730         if (!lpfc_is_link_up(phba))
4731                 return;
4732
4733         if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
4734                 return;
4735
4736         /* Check for loop map present or not */
4737         if (phba->alpa_map[0]) {
4738                 for (j = 1; j <= phba->alpa_map[0]; j++) {
4739                         alpa = phba->alpa_map[j];
4740                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
4741                                 continue;
4742                         lpfc_setup_disc_node(vport, alpa);
4743                 }
4744         } else {
4745                 /* No alpamap, so try all alpa's */
4746                 for (j = 0; j < FC_MAXLOOP; j++) {
4747                         /* If cfg_scan_down is set, start from highest
4748                          * ALPA (0xef) to lowest (0x1).
4749                          */
4750                         if (vport->cfg_scan_down)
4751                                 index = j;
4752                         else
4753                                 index = FC_MAXLOOP - j - 1;
4754                         alpa = lpfcAlpaArray[index];
4755                         if ((vport->fc_myDID & 0xff) == alpa)
4756                                 continue;
4757                         lpfc_setup_disc_node(vport, alpa);
4758                 }
4759         }
4760         return;
4761 }
4762
4763 void
4764 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
4765 {
4766         LPFC_MBOXQ_t *mbox;
4767         struct lpfc_sli *psli = &phba->sli;
4768         struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
4769         struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
4770         struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
4771         int  rc;
4772
4773         /*
4774          * if it's not a physical port or if we already send
4775          * clear_la then don't send it.
4776          */
4777         if ((phba->link_state >= LPFC_CLEAR_LA) ||
4778             (vport->port_type != LPFC_PHYSICAL_PORT) ||
4779                 (phba->sli_rev == LPFC_SLI_REV4))
4780                 return;
4781
4782                         /* Link up discovery */
4783         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
4784                 phba->link_state = LPFC_CLEAR_LA;
4785                 lpfc_clear_la(phba, mbox);
4786                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
4787                 mbox->vport = vport;
4788                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4789                 if (rc == MBX_NOT_FINISHED) {
4790                         mempool_free(mbox, phba->mbox_mem_pool);
4791                         lpfc_disc_flush_list(vport);
4792                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4793                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4794                         next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4795                         phba->link_state = LPFC_HBA_ERROR;
4796                 }
4797         }
4798 }
4799
4800 /* Reg_vpi to tell firmware to resume normal operations */
4801 void
4802 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
4803 {
4804         LPFC_MBOXQ_t *regvpimbox;
4805
4806         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4807         if (regvpimbox) {
4808                 lpfc_reg_vpi(vport, regvpimbox);
4809                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
4810                 regvpimbox->vport = vport;
4811                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
4812                                         == MBX_NOT_FINISHED) {
4813                         mempool_free(regvpimbox, phba->mbox_mem_pool);
4814                 }
4815         }
4816 }
4817
4818 /* Start Link up / RSCN discovery on NPR nodes */
4819 void
4820 lpfc_disc_start(struct lpfc_vport *vport)
4821 {
4822         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4823         struct lpfc_hba  *phba = vport->phba;
4824         uint32_t num_sent;
4825         uint32_t clear_la_pending;
4826         int did_changed;
4827
4828         if (!lpfc_is_link_up(phba))
4829                 return;
4830
4831         if (phba->link_state == LPFC_CLEAR_LA)
4832                 clear_la_pending = 1;
4833         else
4834                 clear_la_pending = 0;
4835
4836         if (vport->port_state < LPFC_VPORT_READY)
4837                 vport->port_state = LPFC_DISC_AUTH;
4838
4839         lpfc_set_disctmo(vport);
4840
4841         if (vport->fc_prevDID == vport->fc_myDID)
4842                 did_changed = 0;
4843         else
4844                 did_changed = 1;
4845
4846         vport->fc_prevDID = vport->fc_myDID;
4847         vport->num_disc_nodes = 0;
4848
4849         /* Start Discovery state <hba_state> */
4850         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4851                          "0202 Start Discovery hba state x%x "
4852                          "Data: x%x x%x x%x\n",
4853                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
4854                          vport->fc_adisc_cnt);
4855
4856         /* First do ADISCs - if any */
4857         num_sent = lpfc_els_disc_adisc(vport);
4858
4859         if (num_sent)
4860                 return;
4861
4862         /* Register the VPI for SLI3, NON-NPIV only. */
4863         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
4864             !(vport->fc_flag & FC_PT2PT) &&
4865             !(vport->fc_flag & FC_RSCN_MODE) &&
4866             (phba->sli_rev < LPFC_SLI_REV4)) {
4867                 lpfc_issue_reg_vpi(phba, vport);
4868                 return;
4869         }
4870
4871         /*
4872          * For SLI2, we need to set port_state to READY and continue
4873          * discovery.
4874          */
4875         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
4876                 /* If we get here, there is nothing to ADISC */
4877                 if (vport->port_type == LPFC_PHYSICAL_PORT)
4878                         lpfc_issue_clear_la(phba, vport);
4879
4880                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
4881                         vport->num_disc_nodes = 0;
4882                         /* go thru NPR nodes and issue ELS PLOGIs */
4883                         if (vport->fc_npr_cnt)
4884                                 lpfc_els_disc_plogi(vport);
4885
4886                         if (!vport->num_disc_nodes) {
4887                                 spin_lock_irq(shost->host_lock);
4888                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
4889                                 spin_unlock_irq(shost->host_lock);
4890                                 lpfc_can_disctmo(vport);
4891                         }
4892                 }
4893                 vport->port_state = LPFC_VPORT_READY;
4894         } else {
4895                 /* Next do PLOGIs - if any */
4896                 num_sent = lpfc_els_disc_plogi(vport);
4897
4898                 if (num_sent)
4899                         return;
4900
4901                 if (vport->fc_flag & FC_RSCN_MODE) {
4902                         /* Check to see if more RSCNs came in while we
4903                          * were processing this one.
4904                          */
4905                         if ((vport->fc_rscn_id_cnt == 0) &&
4906                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
4907                                 spin_lock_irq(shost->host_lock);
4908                                 vport->fc_flag &= ~FC_RSCN_MODE;
4909                                 spin_unlock_irq(shost->host_lock);
4910                                 lpfc_can_disctmo(vport);
4911                         } else
4912                                 lpfc_els_handle_rscn(vport);
4913                 }
4914         }
4915         return;
4916 }
4917
4918 /*
4919  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
4920  *  ring the match the sppecified nodelist.
4921  */
4922 static void
4923 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
4924 {
4925         LIST_HEAD(completions);
4926         struct lpfc_sli *psli;
4927         IOCB_t     *icmd;
4928         struct lpfc_iocbq    *iocb, *next_iocb;
4929         struct lpfc_sli_ring *pring;
4930
4931         psli = &phba->sli;
4932         pring = &psli->ring[LPFC_ELS_RING];
4933
4934         /* Error matching iocb on txq or txcmplq
4935          * First check the txq.
4936          */
4937         spin_lock_irq(&phba->hbalock);
4938         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
4939                 if (iocb->context1 != ndlp) {
4940                         continue;
4941                 }
4942                 icmd = &iocb->iocb;
4943                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
4944                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
4945
4946                         list_move_tail(&iocb->list, &completions);
4947                         pring->txq_cnt--;
4948                 }
4949         }
4950
4951         /* Next check the txcmplq */
4952         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
4953                 if (iocb->context1 != ndlp) {
4954                         continue;
4955                 }
4956                 icmd = &iocb->iocb;
4957                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
4958                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
4959                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
4960                 }
4961         }
4962         spin_unlock_irq(&phba->hbalock);
4963
4964         /* Cancel all the IOCBs from the completions list */
4965         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
4966                               IOERR_SLI_ABORTED);
4967 }
4968
4969 static void
4970 lpfc_disc_flush_list(struct lpfc_vport *vport)
4971 {
4972         struct lpfc_nodelist *ndlp, *next_ndlp;
4973         struct lpfc_hba *phba = vport->phba;
4974
4975         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
4976                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
4977                                          nlp_listp) {
4978                         if (!NLP_CHK_NODE_ACT(ndlp))
4979                                 continue;
4980                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
4981                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
4982                                 lpfc_free_tx(phba, ndlp);
4983                         }
4984                 }
4985         }
4986 }
4987
4988 void
4989 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
4990 {
4991         lpfc_els_flush_rscn(vport);
4992         lpfc_els_flush_cmd(vport);
4993         lpfc_disc_flush_list(vport);
4994 }
4995
4996 /*****************************************************************************/
4997 /*
4998  * NAME:     lpfc_disc_timeout
4999  *
5000  * FUNCTION: Fibre Channel driver discovery timeout routine.
5001  *
5002  * EXECUTION ENVIRONMENT: interrupt only
5003  *
5004  * CALLED FROM:
5005  *      Timer function
5006  *
5007  * RETURNS:
5008  *      none
5009  */
5010 /*****************************************************************************/
5011 void
5012 lpfc_disc_timeout(unsigned long ptr)
5013 {
5014         struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
5015         struct lpfc_hba   *phba = vport->phba;
5016         uint32_t tmo_posted;
5017         unsigned long flags = 0;
5018
5019         if (unlikely(!phba))
5020                 return;
5021
5022         spin_lock_irqsave(&vport->work_port_lock, flags);
5023         tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
5024         if (!tmo_posted)
5025                 vport->work_port_events |= WORKER_DISC_TMO;
5026         spin_unlock_irqrestore(&vport->work_port_lock, flags);
5027
5028         if (!tmo_posted)
5029                 lpfc_worker_wake_up(phba);
5030         return;
5031 }
5032
5033 static void
5034 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
5035 {
5036         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5037         struct lpfc_hba  *phba = vport->phba;
5038         struct lpfc_sli  *psli = &phba->sli;
5039         struct lpfc_nodelist *ndlp, *next_ndlp;
5040         LPFC_MBOXQ_t *initlinkmbox;
5041         int rc, clrlaerr = 0;
5042
5043         if (!(vport->fc_flag & FC_DISC_TMO))
5044                 return;
5045
5046         spin_lock_irq(shost->host_lock);
5047         vport->fc_flag &= ~FC_DISC_TMO;
5048         spin_unlock_irq(shost->host_lock);
5049
5050         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
5051                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
5052                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
5053
5054         switch (vport->port_state) {
5055
5056         case LPFC_LOCAL_CFG_LINK:
5057         /* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
5058          * FAN
5059          */
5060                                 /* FAN timeout */
5061                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
5062                                  "0221 FAN timeout\n");
5063                 /* Start discovery by sending FLOGI, clean up old rpis */
5064                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
5065                                          nlp_listp) {
5066                         if (!NLP_CHK_NODE_ACT(ndlp))
5067                                 continue;
5068                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
5069                                 continue;
5070                         if (ndlp->nlp_type & NLP_FABRIC) {
5071                                 /* Clean up the ndlp on Fabric connections */
5072                                 lpfc_drop_node(vport, ndlp);
5073
5074                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
5075                                 /* Fail outstanding IO now since device
5076                                  * is marked for PLOGI.
5077                                  */
5078                                 lpfc_unreg_rpi(vport, ndlp);
5079                         }
5080                 }
5081                 if (vport->port_state != LPFC_FLOGI) {
5082                         if (phba->sli_rev <= LPFC_SLI_REV3)
5083                                 lpfc_initial_flogi(vport);
5084                         else
5085                                 lpfc_issue_init_vfi(vport);
5086                         return;
5087                 }
5088                 break;
5089
5090         case LPFC_FDISC:
5091         case LPFC_FLOGI:
5092         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
5093                 /* Initial FLOGI timeout */
5094                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5095                                  "0222 Initial %s timeout\n",
5096                                  vport->vpi ? "FDISC" : "FLOGI");
5097
5098                 /* Assume no Fabric and go on with discovery.
5099                  * Check for outstanding ELS FLOGI to abort.
5100                  */
5101
5102                 /* FLOGI failed, so just use loop map to make discovery list */
5103                 lpfc_disc_list_loopmap(vport);
5104
5105                 /* Start discovery */
5106                 lpfc_disc_start(vport);
5107                 break;
5108
5109         case LPFC_FABRIC_CFG_LINK:
5110         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
5111            NameServer login */
5112                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5113                                  "0223 Timeout while waiting for "
5114                                  "NameServer login\n");
5115                 /* Next look for NameServer ndlp */
5116                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
5117                 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
5118                         lpfc_els_abort(phba, ndlp);
5119
5120                 /* ReStart discovery */
5121                 goto restart_disc;
5122
5123         case LPFC_NS_QRY:
5124         /* Check for wait for NameServer Rsp timeout */
5125                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5126                                  "0224 NameServer Query timeout "
5127                                  "Data: x%x x%x\n",
5128                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
5129
5130                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
5131                         /* Try it one more time */
5132                         vport->fc_ns_retry++;
5133                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
5134                                          vport->fc_ns_retry, 0);
5135                         if (rc == 0)
5136                                 break;
5137                 }
5138                 vport->fc_ns_retry = 0;
5139
5140 restart_disc:
5141                 /*
5142                  * Discovery is over.
5143                  * set port_state to PORT_READY if SLI2.
5144                  * cmpl_reg_vpi will set port_state to READY for SLI3.
5145                  */
5146                 if (phba->sli_rev < LPFC_SLI_REV4) {
5147                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
5148                                 lpfc_issue_reg_vpi(phba, vport);
5149                         else  {
5150                                 lpfc_issue_clear_la(phba, vport);
5151                                 vport->port_state = LPFC_VPORT_READY;
5152                         }
5153                 }
5154
5155                 /* Setup and issue mailbox INITIALIZE LINK command */
5156                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5157                 if (!initlinkmbox) {
5158                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5159                                          "0206 Device Discovery "
5160                                          "completion error\n");
5161                         phba->link_state = LPFC_HBA_ERROR;
5162                         break;
5163                 }
5164
5165                 lpfc_linkdown(phba);
5166                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
5167                                phba->cfg_link_speed);
5168                 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
5169                 initlinkmbox->vport = vport;
5170                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5171                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
5172                 lpfc_set_loopback_flag(phba);
5173                 if (rc == MBX_NOT_FINISHED)
5174                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
5175
5176                 break;
5177
5178         case LPFC_DISC_AUTH:
5179         /* Node Authentication timeout */
5180                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5181                                  "0227 Node Authentication timeout\n");
5182                 lpfc_disc_flush_list(vport);
5183
5184                 /*
5185                  * set port_state to PORT_READY if SLI2.
5186                  * cmpl_reg_vpi will set port_state to READY for SLI3.
5187                  */
5188                 if (phba->sli_rev < LPFC_SLI_REV4) {
5189                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
5190                                 lpfc_issue_reg_vpi(phba, vport);
5191                         else  { /* NPIV Not enabled */
5192                                 lpfc_issue_clear_la(phba, vport);
5193                                 vport->port_state = LPFC_VPORT_READY;
5194                         }
5195                 }
5196                 break;
5197
5198         case LPFC_VPORT_READY:
5199                 if (vport->fc_flag & FC_RSCN_MODE) {
5200                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5201                                          "0231 RSCN timeout Data: x%x "
5202                                          "x%x\n",
5203                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
5204
5205                         /* Cleanup any outstanding ELS commands */
5206                         lpfc_els_flush_cmd(vport);
5207
5208                         lpfc_els_flush_rscn(vport);
5209                         lpfc_disc_flush_list(vport);
5210                 }
5211                 break;
5212
5213         default:
5214                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5215                                  "0273 Unexpected discovery timeout, "
5216                                  "vport State x%x\n", vport->port_state);
5217                 break;
5218         }
5219
5220         switch (phba->link_state) {
5221         case LPFC_CLEAR_LA:
5222                                 /* CLEAR LA timeout */
5223                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5224                                  "0228 CLEAR LA timeout\n");
5225                 clrlaerr = 1;
5226                 break;
5227
5228         case LPFC_LINK_UP:
5229                 lpfc_issue_clear_la(phba, vport);
5230                 /* Drop thru */
5231         case LPFC_LINK_UNKNOWN:
5232         case LPFC_WARM_START:
5233         case LPFC_INIT_START:
5234         case LPFC_INIT_MBX_CMDS:
5235         case LPFC_LINK_DOWN:
5236         case LPFC_HBA_ERROR:
5237                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5238                                  "0230 Unexpected timeout, hba link "
5239                                  "state x%x\n", phba->link_state);
5240                 clrlaerr = 1;
5241                 break;
5242
5243         case LPFC_HBA_READY:
5244                 break;
5245         }
5246
5247         if (clrlaerr) {
5248                 lpfc_disc_flush_list(vport);
5249                 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
5250                 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
5251                 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
5252                 vport->port_state = LPFC_VPORT_READY;
5253         }
5254
5255         return;
5256 }
5257
5258 /*
5259  * This routine handles processing a NameServer REG_LOGIN mailbox
5260  * command upon completion. It is setup in the LPFC_MBOXQ
5261  * as the completion routine when the command is
5262  * handed off to the SLI layer.
5263  */
5264 void
5265 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5266 {
5267         MAILBOX_t *mb = &pmb->u.mb;
5268         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
5269         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
5270         struct lpfc_vport    *vport = pmb->vport;
5271
5272         pmb->context1 = NULL;
5273         pmb->context2 = NULL;
5274
5275         if (phba->sli_rev < LPFC_SLI_REV4)
5276                 ndlp->nlp_rpi = mb->un.varWords[0];
5277         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
5278         ndlp->nlp_type |= NLP_FABRIC;
5279         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
5280
5281         /*
5282          * Start issuing Fabric-Device Management Interface (FDMI) command to
5283          * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
5284          * fdmi-on=2 (supporting RPA/hostnmae)
5285          */
5286
5287         if (vport->cfg_fdmi_on == 1)
5288                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
5289         else
5290                 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
5291
5292         /* decrement the node reference count held for this callback
5293          * function.
5294          */
5295         lpfc_nlp_put(ndlp);
5296         lpfc_mbuf_free(phba, mp->virt, mp->phys);
5297         kfree(mp);
5298         mempool_free(pmb, phba->mbox_mem_pool);
5299
5300         return;
5301 }
5302
5303 static int
5304 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
5305 {
5306         uint16_t *rpi = param;
5307
5308         return ndlp->nlp_rpi == *rpi;
5309 }
5310
5311 static int
5312 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
5313 {
5314         return memcmp(&ndlp->nlp_portname, param,
5315                       sizeof(ndlp->nlp_portname)) == 0;
5316 }
5317
5318 static struct lpfc_nodelist *
5319 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
5320 {
5321         struct lpfc_nodelist *ndlp;
5322
5323         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5324                 if (filter(ndlp, param))
5325                         return ndlp;
5326         }
5327         return NULL;
5328 }
5329
5330 /*
5331  * This routine looks up the ndlp lists for the given RPI. If rpi found it
5332  * returns the node list element pointer else return NULL.
5333  */
5334 struct lpfc_nodelist *
5335 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
5336 {
5337         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
5338 }
5339
5340 /*
5341  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
5342  * returns the node element list pointer else return NULL.
5343  */
5344 struct lpfc_nodelist *
5345 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
5346 {
5347         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5348         struct lpfc_nodelist *ndlp;
5349
5350         spin_lock_irq(shost->host_lock);
5351         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
5352         spin_unlock_irq(shost->host_lock);
5353         return ndlp;
5354 }
5355
5356 void
5357 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
5358               uint32_t did)
5359 {
5360         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
5361
5362         lpfc_initialize_node(vport, ndlp, did);
5363         INIT_LIST_HEAD(&ndlp->nlp_listp);
5364
5365         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
5366                 "node init:       did:x%x",
5367                 ndlp->nlp_DID, 0, 0);
5368
5369         return;
5370 }
5371
5372 /* This routine releases all resources associated with a specifc NPort's ndlp
5373  * and mempool_free's the nodelist.
5374  */
5375 static void
5376 lpfc_nlp_release(struct kref *kref)
5377 {
5378         struct lpfc_hba *phba;
5379         unsigned long flags;
5380         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
5381                                                   kref);
5382
5383         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5384                 "node release:    did:x%x flg:x%x type:x%x",
5385                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
5386
5387         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
5388                         "0279 lpfc_nlp_release: ndlp:x%p "
5389                         "usgmap:x%x refcnt:%d\n",
5390                         (void *)ndlp, ndlp->nlp_usg_map,
5391                         atomic_read(&ndlp->kref.refcount));
5392
5393         /* remove ndlp from action. */
5394         lpfc_nlp_remove(ndlp->vport, ndlp);
5395
5396         /* clear the ndlp active flag for all release cases */
5397         phba = ndlp->phba;
5398         spin_lock_irqsave(&phba->ndlp_lock, flags);
5399         NLP_CLR_NODE_ACT(ndlp);
5400         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5401         if (phba->sli_rev == LPFC_SLI_REV4)
5402                 lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi);
5403
5404         /* free ndlp memory for final ndlp release */
5405         if (NLP_CHK_FREE_REQ(ndlp)) {
5406                 kfree(ndlp->lat_data);
5407                 mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
5408         }
5409 }
5410
5411 /* This routine bumps the reference count for a ndlp structure to ensure
5412  * that one discovery thread won't free a ndlp while another discovery thread
5413  * is using it.
5414  */
5415 struct lpfc_nodelist *
5416 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
5417 {
5418         struct lpfc_hba *phba;
5419         unsigned long flags;
5420
5421         if (ndlp) {
5422                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5423                         "node get:        did:x%x flg:x%x refcnt:x%x",
5424                         ndlp->nlp_DID, ndlp->nlp_flag,
5425                         atomic_read(&ndlp->kref.refcount));
5426                 /* The check of ndlp usage to prevent incrementing the
5427                  * ndlp reference count that is in the process of being
5428                  * released.
5429                  */
5430                 phba = ndlp->phba;
5431                 spin_lock_irqsave(&phba->ndlp_lock, flags);
5432                 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
5433                         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5434                         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
5435                                 "0276 lpfc_nlp_get: ndlp:x%p "
5436                                 "usgmap:x%x refcnt:%d\n",
5437                                 (void *)ndlp, ndlp->nlp_usg_map,
5438                                 atomic_read(&ndlp->kref.refcount));
5439                         return NULL;
5440                 } else
5441                         kref_get(&ndlp->kref);
5442                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5443         }
5444         return ndlp;
5445 }
5446
5447 /* This routine decrements the reference count for a ndlp structure. If the
5448  * count goes to 0, this indicates the the associated nodelist should be
5449  * freed. Returning 1 indicates the ndlp resource has been released; on the
5450  * other hand, returning 0 indicates the ndlp resource has not been released
5451  * yet.
5452  */
5453 int
5454 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
5455 {
5456         struct lpfc_hba *phba;
5457         unsigned long flags;
5458
5459         if (!ndlp)
5460                 return 1;
5461
5462         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5463         "node put:        did:x%x flg:x%x refcnt:x%x",
5464                 ndlp->nlp_DID, ndlp->nlp_flag,
5465                 atomic_read(&ndlp->kref.refcount));
5466         phba = ndlp->phba;
5467         spin_lock_irqsave(&phba->ndlp_lock, flags);
5468         /* Check the ndlp memory free acknowledge flag to avoid the
5469          * possible race condition that kref_put got invoked again
5470          * after previous one has done ndlp memory free.
5471          */
5472         if (NLP_CHK_FREE_ACK(ndlp)) {
5473                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5474                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
5475                                 "0274 lpfc_nlp_put: ndlp:x%p "
5476                                 "usgmap:x%x refcnt:%d\n",
5477                                 (void *)ndlp, ndlp->nlp_usg_map,
5478                                 atomic_read(&ndlp->kref.refcount));
5479                 return 1;
5480         }
5481         /* Check the ndlp inactivate log flag to avoid the possible
5482          * race condition that kref_put got invoked again after ndlp
5483          * is already in inactivating state.
5484          */
5485         if (NLP_CHK_IACT_REQ(ndlp)) {
5486                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5487                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
5488                                 "0275 lpfc_nlp_put: ndlp:x%p "
5489                                 "usgmap:x%x refcnt:%d\n",
5490                                 (void *)ndlp, ndlp->nlp_usg_map,
5491                                 atomic_read(&ndlp->kref.refcount));
5492                 return 1;
5493         }
5494         /* For last put, mark the ndlp usage flags to make sure no
5495          * other kref_get and kref_put on the same ndlp shall get
5496          * in between the process when the final kref_put has been
5497          * invoked on this ndlp.
5498          */
5499         if (atomic_read(&ndlp->kref.refcount) == 1) {
5500                 /* Indicate ndlp is put to inactive state. */
5501                 NLP_SET_IACT_REQ(ndlp);
5502                 /* Acknowledge ndlp memory free has been seen. */
5503                 if (NLP_CHK_FREE_REQ(ndlp))
5504                         NLP_SET_FREE_ACK(ndlp);
5505         }
5506         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5507         /* Note, the kref_put returns 1 when decrementing a reference
5508          * count that was 1, it invokes the release callback function,
5509          * but it still left the reference count as 1 (not actually
5510          * performs the last decrementation). Otherwise, it actually
5511          * decrements the reference count and returns 0.
5512          */
5513         return kref_put(&ndlp->kref, lpfc_nlp_release);
5514 }
5515
5516 /* This routine free's the specified nodelist if it is not in use
5517  * by any other discovery thread. This routine returns 1 if the
5518  * ndlp has been freed. A return value of 0 indicates the ndlp is
5519  * not yet been released.
5520  */
5521 int
5522 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
5523 {
5524         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5525                 "node not used:   did:x%x flg:x%x refcnt:x%x",
5526                 ndlp->nlp_DID, ndlp->nlp_flag,
5527                 atomic_read(&ndlp->kref.refcount));
5528         if (atomic_read(&ndlp->kref.refcount) == 1)
5529                 if (lpfc_nlp_put(ndlp))
5530                         return 1;
5531         return 0;
5532 }
5533
5534 /**
5535  * lpfc_fcf_inuse - Check if FCF can be unregistered.
5536  * @phba: Pointer to hba context object.
5537  *
5538  * This function iterate through all FC nodes associated
5539  * will all vports to check if there is any node with
5540  * fc_rports associated with it. If there is an fc_rport
5541  * associated with the node, then the node is either in
5542  * discovered state or its devloss_timer is pending.
5543  */
5544 static int
5545 lpfc_fcf_inuse(struct lpfc_hba *phba)
5546 {
5547         struct lpfc_vport **vports;
5548         int i, ret = 0;
5549         struct lpfc_nodelist *ndlp;
5550         struct Scsi_Host  *shost;
5551
5552         vports = lpfc_create_vport_work_array(phba);
5553
5554         /* If driver cannot allocate memory, indicate fcf is in use */
5555         if (!vports)
5556                 return 1;
5557
5558         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5559                 shost = lpfc_shost_from_vport(vports[i]);
5560                 spin_lock_irq(shost->host_lock);
5561                 /*
5562                  * IF the CVL_RCVD bit is not set then we have sent the
5563                  * flogi.
5564                  * If dev_loss fires while we are waiting we do not want to
5565                  * unreg the fcf.
5566                  */
5567                 if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) {
5568                         spin_unlock_irq(shost->host_lock);
5569                         ret =  1;
5570                         goto out;
5571                 }
5572                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
5573                         if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport &&
5574                           (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
5575                                 ret = 1;
5576                                 spin_unlock_irq(shost->host_lock);
5577                                 goto out;
5578                         } else {
5579                                 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
5580                                         "2624 RPI %x DID %x flg %x still "
5581                                         "logged in\n",
5582                                         ndlp->nlp_rpi, ndlp->nlp_DID,
5583                                         ndlp->nlp_flag);
5584                                 if (ndlp->nlp_flag & NLP_RPI_REGISTERED)
5585                                         ret = 1;
5586                         }
5587                 }
5588                 spin_unlock_irq(shost->host_lock);
5589         }
5590 out:
5591         lpfc_destroy_vport_work_array(phba, vports);
5592         return ret;
5593 }
5594
5595 /**
5596  * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
5597  * @phba: Pointer to hba context object.
5598  * @mboxq: Pointer to mailbox object.
5599  *
5600  * This function frees memory associated with the mailbox command.
5601  */
5602 static void
5603 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
5604 {
5605         struct lpfc_vport *vport = mboxq->vport;
5606         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5607
5608         if (mboxq->u.mb.mbxStatus) {
5609                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5610                         "2555 UNREG_VFI mbxStatus error x%x "
5611                         "HBA state x%x\n",
5612                         mboxq->u.mb.mbxStatus, vport->port_state);
5613         }
5614         spin_lock_irq(shost->host_lock);
5615         phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
5616         spin_unlock_irq(shost->host_lock);
5617         mempool_free(mboxq, phba->mbox_mem_pool);
5618         return;
5619 }
5620
5621 /**
5622  * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
5623  * @phba: Pointer to hba context object.
5624  * @mboxq: Pointer to mailbox object.
5625  *
5626  * This function frees memory associated with the mailbox command.
5627  */
5628 static void
5629 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
5630 {
5631         struct lpfc_vport *vport = mboxq->vport;
5632
5633         if (mboxq->u.mb.mbxStatus) {
5634                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5635                         "2550 UNREG_FCFI mbxStatus error x%x "
5636                         "HBA state x%x\n",
5637                         mboxq->u.mb.mbxStatus, vport->port_state);
5638         }
5639         mempool_free(mboxq, phba->mbox_mem_pool);
5640         return;
5641 }
5642
5643 /**
5644  * lpfc_unregister_fcf_prep - Unregister fcf record preparation
5645  * @phba: Pointer to hba context object.
5646  *
5647  * This function prepare the HBA for unregistering the currently registered
5648  * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
5649  * VFIs.
5650  */
5651 int
5652 lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
5653 {
5654         LPFC_MBOXQ_t *mbox;
5655         struct lpfc_vport **vports;
5656         struct lpfc_nodelist *ndlp;
5657         struct Scsi_Host *shost;
5658         int i, rc;
5659
5660         /* Unregister RPIs */
5661         if (lpfc_fcf_inuse(phba))
5662                 lpfc_unreg_hba_rpis(phba);
5663
5664         /* At this point, all discovery is aborted */
5665         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
5666
5667         /* Unregister VPIs */
5668         vports = lpfc_create_vport_work_array(phba);
5669         if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
5670                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5671                         /* Stop FLOGI/FDISC retries */
5672                         ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
5673                         if (ndlp)
5674                                 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
5675                         lpfc_cleanup_pending_mbox(vports[i]);
5676                         if (phba->sli_rev == LPFC_SLI_REV4)
5677                                 lpfc_sli4_unreg_all_rpis(vports[i]);
5678                         lpfc_mbx_unreg_vpi(vports[i]);
5679                         shost = lpfc_shost_from_vport(vports[i]);
5680                         spin_lock_irq(shost->host_lock);
5681                         vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
5682                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
5683                         spin_unlock_irq(shost->host_lock);
5684                 }
5685         lpfc_destroy_vport_work_array(phba, vports);
5686
5687         /* Cleanup any outstanding ELS commands */
5688         lpfc_els_flush_all_cmd(phba);
5689
5690         /* Unregister VFI */
5691         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5692         if (!mbox) {
5693                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5694                                 "2556 UNREG_VFI mbox allocation failed"
5695                                 "HBA state x%x\n", phba->pport->port_state);
5696                 return -ENOMEM;
5697         }
5698
5699         lpfc_unreg_vfi(mbox, phba->pport);
5700         mbox->vport = phba->pport;
5701         mbox->mbox_cmpl = lpfc_unregister_vfi_cmpl;
5702
5703         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5704         if (rc == MBX_NOT_FINISHED) {
5705                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5706                                 "2557 UNREG_VFI issue mbox failed rc x%x "
5707                                 "HBA state x%x\n",
5708                                 rc, phba->pport->port_state);
5709                 mempool_free(mbox, phba->mbox_mem_pool);
5710                 return -EIO;
5711         }
5712
5713         shost = lpfc_shost_from_vport(phba->pport);
5714         spin_lock_irq(shost->host_lock);
5715         phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
5716         spin_unlock_irq(shost->host_lock);
5717
5718         return 0;
5719 }
5720
5721 /**
5722  * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
5723  * @phba: Pointer to hba context object.
5724  *
5725  * This function issues synchronous unregister FCF mailbox command to HBA to
5726  * unregister the currently registered FCF record. The driver does not reset
5727  * the driver FCF usage state flags.
5728  *
5729  * Return 0 if successfully issued, none-zero otherwise.
5730  */
5731 int
5732 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
5733 {
5734         LPFC_MBOXQ_t *mbox;
5735         int rc;
5736
5737         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5738         if (!mbox) {
5739                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5740                                 "2551 UNREG_FCFI mbox allocation failed"
5741                                 "HBA state x%x\n", phba->pport->port_state);
5742                 return -ENOMEM;
5743         }
5744         lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
5745         mbox->vport = phba->pport;
5746         mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
5747         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5748
5749         if (rc == MBX_NOT_FINISHED) {
5750                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5751                                 "2552 Unregister FCFI command failed rc x%x "
5752                                 "HBA state x%x\n",
5753                                 rc, phba->pport->port_state);
5754                 return -EINVAL;
5755         }
5756         return 0;
5757 }
5758
5759 /**
5760  * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
5761  * @phba: Pointer to hba context object.
5762  *
5763  * This function unregisters the currently reigstered FCF. This function
5764  * also tries to find another FCF for discovery by rescan the HBA FCF table.
5765  */
5766 void
5767 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
5768 {
5769         int rc;
5770
5771         /* Preparation for unregistering fcf */
5772         rc = lpfc_unregister_fcf_prep(phba);
5773         if (rc) {
5774                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
5775                                 "2748 Failed to prepare for unregistering "
5776                                 "HBA's FCF record: rc=%d\n", rc);
5777                 return;
5778         }
5779
5780         /* Now, unregister FCF record and reset HBA FCF state */
5781         rc = lpfc_sli4_unregister_fcf(phba);
5782         if (rc)
5783                 return;
5784         /* Reset HBA FCF states after successful unregister FCF */
5785         phba->fcf.fcf_flag = 0;
5786         phba->fcf.current_rec.flag = 0;
5787
5788         /*
5789          * If driver is not unloading, check if there is any other
5790          * FCF record that can be used for discovery.
5791          */
5792         if ((phba->pport->load_flag & FC_UNLOADING) ||
5793             (phba->link_state < LPFC_LINK_UP))
5794                 return;
5795
5796         /* This is considered as the initial FCF discovery scan */
5797         spin_lock_irq(&phba->hbalock);
5798         phba->fcf.fcf_flag |= FCF_INIT_DISC;
5799         spin_unlock_irq(&phba->hbalock);
5800
5801         /* Reset FCF roundrobin bmask for new discovery */
5802         lpfc_sli4_clear_fcf_rr_bmask(phba);
5803
5804         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
5805
5806         if (rc) {
5807                 spin_lock_irq(&phba->hbalock);
5808                 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
5809                 spin_unlock_irq(&phba->hbalock);
5810                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5811                                 "2553 lpfc_unregister_unused_fcf failed "
5812                                 "to read FCF record HBA state x%x\n",
5813                                 phba->pport->port_state);
5814         }
5815 }
5816
5817 /**
5818  * lpfc_unregister_fcf - Unregister the currently registered fcf record
5819  * @phba: Pointer to hba context object.
5820  *
5821  * This function just unregisters the currently reigstered FCF. It does not
5822  * try to find another FCF for discovery.
5823  */
5824 void
5825 lpfc_unregister_fcf(struct lpfc_hba *phba)
5826 {
5827         int rc;
5828
5829         /* Preparation for unregistering fcf */
5830         rc = lpfc_unregister_fcf_prep(phba);
5831         if (rc) {
5832                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
5833                                 "2749 Failed to prepare for unregistering "
5834                                 "HBA's FCF record: rc=%d\n", rc);
5835                 return;
5836         }
5837
5838         /* Now, unregister FCF record and reset HBA FCF state */
5839         rc = lpfc_sli4_unregister_fcf(phba);
5840         if (rc)
5841                 return;
5842         /* Set proper HBA FCF states after successful unregister FCF */
5843         spin_lock_irq(&phba->hbalock);
5844         phba->fcf.fcf_flag &= ~FCF_REGISTERED;
5845         spin_unlock_irq(&phba->hbalock);
5846 }
5847
5848 /**
5849  * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
5850  * @phba: Pointer to hba context object.
5851  *
5852  * This function check if there are any connected remote port for the FCF and
5853  * if all the devices are disconnected, this function unregister FCFI.
5854  * This function also tries to use another FCF for discovery.
5855  */
5856 void
5857 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
5858 {
5859         /*
5860          * If HBA is not running in FIP mode, if HBA does not support
5861          * FCoE, if FCF discovery is ongoing, or if FCF has not been
5862          * registered, do nothing.
5863          */
5864         spin_lock_irq(&phba->hbalock);
5865         if (!(phba->hba_flag & HBA_FCOE_MODE) ||
5866             !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
5867             !(phba->hba_flag & HBA_FIP_SUPPORT) ||
5868             (phba->fcf.fcf_flag & FCF_DISCOVERY) ||
5869             (phba->pport->port_state == LPFC_FLOGI)) {
5870                 spin_unlock_irq(&phba->hbalock);
5871                 return;
5872         }
5873         spin_unlock_irq(&phba->hbalock);
5874
5875         if (lpfc_fcf_inuse(phba))
5876                 return;
5877
5878         lpfc_unregister_fcf_rescan(phba);
5879 }
5880
5881 /**
5882  * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
5883  * @phba: Pointer to hba context object.
5884  * @buff: Buffer containing the FCF connection table as in the config
5885  *         region.
5886  * This function create driver data structure for the FCF connection
5887  * record table read from config region 23.
5888  */
5889 static void
5890 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
5891         uint8_t *buff)
5892 {
5893         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
5894         struct lpfc_fcf_conn_hdr *conn_hdr;
5895         struct lpfc_fcf_conn_rec *conn_rec;
5896         uint32_t record_count;
5897         int i;
5898
5899         /* Free the current connect table */
5900         list_for_each_entry_safe(conn_entry, next_conn_entry,
5901                 &phba->fcf_conn_rec_list, list) {
5902                 list_del_init(&conn_entry->list);
5903                 kfree(conn_entry);
5904         }
5905
5906         conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
5907         record_count = conn_hdr->length * sizeof(uint32_t)/
5908                 sizeof(struct lpfc_fcf_conn_rec);
5909
5910         conn_rec = (struct lpfc_fcf_conn_rec *)
5911                 (buff + sizeof(struct lpfc_fcf_conn_hdr));
5912
5913         for (i = 0; i < record_count; i++) {
5914                 if (!(conn_rec[i].flags & FCFCNCT_VALID))
5915                         continue;
5916                 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
5917                         GFP_KERNEL);
5918                 if (!conn_entry) {
5919                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5920                                 "2566 Failed to allocate connection"
5921                                 " table entry\n");
5922                         return;
5923                 }
5924
5925                 memcpy(&conn_entry->conn_rec, &conn_rec[i],
5926                         sizeof(struct lpfc_fcf_conn_rec));
5927                 conn_entry->conn_rec.vlan_tag =
5928                         le16_to_cpu(conn_entry->conn_rec.vlan_tag) & 0xFFF;
5929                 conn_entry->conn_rec.flags =
5930                         le16_to_cpu(conn_entry->conn_rec.flags);
5931                 list_add_tail(&conn_entry->list,
5932                         &phba->fcf_conn_rec_list);
5933         }
5934 }
5935
5936 /**
5937  * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
5938  * @phba: Pointer to hba context object.
5939  * @buff: Buffer containing the FCoE parameter data structure.
5940  *
5941  *  This function update driver data structure with config
5942  *  parameters read from config region 23.
5943  */
5944 static void
5945 lpfc_read_fcoe_param(struct lpfc_hba *phba,
5946                         uint8_t *buff)
5947 {
5948         struct lpfc_fip_param_hdr *fcoe_param_hdr;
5949         struct lpfc_fcoe_params *fcoe_param;
5950
5951         fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
5952                 buff;
5953         fcoe_param = (struct lpfc_fcoe_params *)
5954                 (buff + sizeof(struct lpfc_fip_param_hdr));
5955
5956         if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
5957                 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
5958                 return;
5959
5960         if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
5961                 phba->valid_vlan = 1;
5962                 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
5963                         0xFFF;
5964         }
5965
5966         phba->fc_map[0] = fcoe_param->fc_map[0];
5967         phba->fc_map[1] = fcoe_param->fc_map[1];
5968         phba->fc_map[2] = fcoe_param->fc_map[2];
5969         return;
5970 }
5971
5972 /**
5973  * lpfc_get_rec_conf23 - Get a record type in config region data.
5974  * @buff: Buffer containing config region 23 data.
5975  * @size: Size of the data buffer.
5976  * @rec_type: Record type to be searched.
5977  *
5978  * This function searches config region data to find the beginning
5979  * of the record specified by record_type. If record found, this
5980  * function return pointer to the record else return NULL.
5981  */
5982 static uint8_t *
5983 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
5984 {
5985         uint32_t offset = 0, rec_length;
5986
5987         if ((buff[0] == LPFC_REGION23_LAST_REC) ||
5988                 (size < sizeof(uint32_t)))
5989                 return NULL;
5990
5991         rec_length = buff[offset + 1];
5992
5993         /*
5994          * One TLV record has one word header and number of data words
5995          * specified in the rec_length field of the record header.
5996          */
5997         while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
5998                 <= size) {
5999                 if (buff[offset] == rec_type)
6000                         return &buff[offset];
6001
6002                 if (buff[offset] == LPFC_REGION23_LAST_REC)
6003                         return NULL;
6004
6005                 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
6006                 rec_length = buff[offset + 1];
6007         }
6008         return NULL;
6009 }
6010
6011 /**
6012  * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
6013  * @phba: Pointer to lpfc_hba data structure.
6014  * @buff: Buffer containing config region 23 data.
6015  * @size: Size of the data buffer.
6016  *
6017  * This function parses the FCoE config parameters in config region 23 and
6018  * populate driver data structure with the parameters.
6019  */
6020 void
6021 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
6022                 uint8_t *buff,
6023                 uint32_t size)
6024 {
6025         uint32_t offset = 0, rec_length;
6026         uint8_t *rec_ptr;
6027
6028         /*
6029          * If data size is less than 2 words signature and version cannot be
6030          * verified.
6031          */
6032         if (size < 2*sizeof(uint32_t))
6033                 return;
6034
6035         /* Check the region signature first */
6036         if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
6037                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6038                         "2567 Config region 23 has bad signature\n");
6039                 return;
6040         }
6041
6042         offset += 4;
6043
6044         /* Check the data structure version */
6045         if (buff[offset] != LPFC_REGION23_VERSION) {
6046                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6047                         "2568 Config region 23 has bad version\n");
6048                 return;
6049         }
6050         offset += 4;
6051
6052         rec_length = buff[offset + 1];
6053
6054         /* Read FCoE param record */
6055         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
6056                         size - offset, FCOE_PARAM_TYPE);
6057         if (rec_ptr)
6058                 lpfc_read_fcoe_param(phba, rec_ptr);
6059
6060         /* Read FCF connection table */
6061         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
6062                 size - offset, FCOE_CONN_TBL_TYPE);
6063         if (rec_ptr)
6064                 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
6065
6066 }