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, 0xffffffff, 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 static void
1113 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1114 {
1115         struct lpfc_vport *vport = mboxq->vport;
1116
1117         if (mboxq->u.mb.mbxStatus) {
1118                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1119                          "2017 REG_FCFI mbxStatus error x%x "
1120                          "HBA state x%x\n",
1121                          mboxq->u.mb.mbxStatus, vport->port_state);
1122                 goto fail_out;
1123         }
1124
1125         /* Start FCoE discovery by sending a FLOGI. */
1126         phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1127         /* Set the FCFI registered flag */
1128         spin_lock_irq(&phba->hbalock);
1129         phba->fcf.fcf_flag |= FCF_REGISTERED;
1130         spin_unlock_irq(&phba->hbalock);
1131
1132         /* If there is a pending FCoE event, restart FCF table scan. */
1133         if (lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF))
1134                 goto fail_out;
1135
1136         /* Mark successful completion of FCF table scan */
1137         spin_lock_irq(&phba->hbalock);
1138         phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1139         phba->hba_flag &= ~FCF_TS_INPROG;
1140         if (vport->port_state != LPFC_FLOGI) {
1141                 phba->hba_flag |= FCF_RR_INPROG;
1142                 spin_unlock_irq(&phba->hbalock);
1143                 lpfc_issue_init_vfi(vport);
1144                 goto out;
1145         }
1146         spin_unlock_irq(&phba->hbalock);
1147         goto out;
1148
1149 fail_out:
1150         spin_lock_irq(&phba->hbalock);
1151         phba->hba_flag &= ~FCF_RR_INPROG;
1152         spin_unlock_irq(&phba->hbalock);
1153 out:
1154         mempool_free(mboxq, phba->mbox_mem_pool);
1155 }
1156
1157 /**
1158  * lpfc_fab_name_match - Check if the fcf fabric name match.
1159  * @fab_name: pointer to fabric name.
1160  * @new_fcf_record: pointer to fcf record.
1161  *
1162  * This routine compare the fcf record's fabric name with provided
1163  * fabric name. If the fabric name are identical this function
1164  * returns 1 else return 0.
1165  **/
1166 static uint32_t
1167 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1168 {
1169         if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1170                 return 0;
1171         if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1172                 return 0;
1173         if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1174                 return 0;
1175         if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1176                 return 0;
1177         if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1178                 return 0;
1179         if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1180                 return 0;
1181         if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1182                 return 0;
1183         if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1184                 return 0;
1185         return 1;
1186 }
1187
1188 /**
1189  * lpfc_sw_name_match - Check if the fcf switch name match.
1190  * @fab_name: pointer to fabric name.
1191  * @new_fcf_record: pointer to fcf record.
1192  *
1193  * This routine compare the fcf record's switch name with provided
1194  * switch name. If the switch name are identical this function
1195  * returns 1 else return 0.
1196  **/
1197 static uint32_t
1198 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1199 {
1200         if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1201                 return 0;
1202         if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1203                 return 0;
1204         if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1205                 return 0;
1206         if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1207                 return 0;
1208         if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1209                 return 0;
1210         if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1211                 return 0;
1212         if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1213                 return 0;
1214         if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1215                 return 0;
1216         return 1;
1217 }
1218
1219 /**
1220  * lpfc_mac_addr_match - Check if the fcf mac address match.
1221  * @mac_addr: pointer to mac address.
1222  * @new_fcf_record: pointer to fcf record.
1223  *
1224  * This routine compare the fcf record's mac address with HBA's
1225  * FCF mac address. If the mac addresses are identical this function
1226  * returns 1 else return 0.
1227  **/
1228 static uint32_t
1229 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1230 {
1231         if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1232                 return 0;
1233         if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1234                 return 0;
1235         if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1236                 return 0;
1237         if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1238                 return 0;
1239         if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1240                 return 0;
1241         if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1242                 return 0;
1243         return 1;
1244 }
1245
1246 static bool
1247 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1248 {
1249         return (curr_vlan_id == new_vlan_id);
1250 }
1251
1252 /**
1253  * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1254  * @fcf: pointer to driver fcf record.
1255  * @new_fcf_record: pointer to fcf record.
1256  *
1257  * This routine copies the FCF information from the FCF
1258  * record to lpfc_hba data structure.
1259  **/
1260 static void
1261 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1262                      struct fcf_record *new_fcf_record)
1263 {
1264         /* Fabric name */
1265         fcf_rec->fabric_name[0] =
1266                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1267         fcf_rec->fabric_name[1] =
1268                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1269         fcf_rec->fabric_name[2] =
1270                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1271         fcf_rec->fabric_name[3] =
1272                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1273         fcf_rec->fabric_name[4] =
1274                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1275         fcf_rec->fabric_name[5] =
1276                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1277         fcf_rec->fabric_name[6] =
1278                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1279         fcf_rec->fabric_name[7] =
1280                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1281         /* Mac address */
1282         fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1283         fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1284         fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1285         fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1286         fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1287         fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1288         /* FCF record index */
1289         fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1290         /* FCF record priority */
1291         fcf_rec->priority = new_fcf_record->fip_priority;
1292         /* Switch name */
1293         fcf_rec->switch_name[0] =
1294                 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1295         fcf_rec->switch_name[1] =
1296                 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1297         fcf_rec->switch_name[2] =
1298                 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1299         fcf_rec->switch_name[3] =
1300                 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1301         fcf_rec->switch_name[4] =
1302                 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1303         fcf_rec->switch_name[5] =
1304                 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1305         fcf_rec->switch_name[6] =
1306                 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1307         fcf_rec->switch_name[7] =
1308                 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1309 }
1310
1311 /**
1312  * lpfc_update_fcf_record - Update driver fcf record
1313  * @phba: pointer to lpfc hba data structure.
1314  * @fcf_rec: pointer to driver fcf record.
1315  * @new_fcf_record: pointer to hba fcf record.
1316  * @addr_mode: address mode to be set to the driver fcf record.
1317  * @vlan_id: vlan tag to be set to the driver fcf record.
1318  * @flag: flag bits to be set to the driver fcf record.
1319  *
1320  * This routine updates the driver FCF record from the new HBA FCF record
1321  * together with the address mode, vlan_id, and other informations. This
1322  * routine is called with the host lock held.
1323  **/
1324 static void
1325 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1326                        struct fcf_record *new_fcf_record, uint32_t addr_mode,
1327                        uint16_t vlan_id, uint32_t flag)
1328 {
1329         /* Copy the fields from the HBA's FCF record */
1330         lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1331         /* Update other fields of driver FCF record */
1332         fcf_rec->addr_mode = addr_mode;
1333         fcf_rec->vlan_id = vlan_id;
1334         fcf_rec->flag |= (flag | RECORD_VALID);
1335 }
1336
1337 /**
1338  * lpfc_register_fcf - Register the FCF with hba.
1339  * @phba: pointer to lpfc hba data structure.
1340  *
1341  * This routine issues a register fcfi mailbox command to register
1342  * the fcf with HBA.
1343  **/
1344 static void
1345 lpfc_register_fcf(struct lpfc_hba *phba)
1346 {
1347         LPFC_MBOXQ_t *fcf_mbxq;
1348         int rc;
1349
1350         spin_lock_irq(&phba->hbalock);
1351         /* If the FCF is not available do nothing. */
1352         if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1353                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1354                 spin_unlock_irq(&phba->hbalock);
1355                 return;
1356         }
1357
1358         /* The FCF is already registered, start discovery */
1359         if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1360                 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1361                 phba->hba_flag &= ~FCF_TS_INPROG;
1362                 if (phba->pport->port_state != LPFC_FLOGI) {
1363                         phba->hba_flag |= FCF_RR_INPROG;
1364                         spin_unlock_irq(&phba->hbalock);
1365                         lpfc_issue_init_vfi(phba->pport);
1366                         return;
1367                 }
1368                 spin_unlock_irq(&phba->hbalock);
1369                 return;
1370         }
1371         spin_unlock_irq(&phba->hbalock);
1372
1373         fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1374         if (!fcf_mbxq) {
1375                 spin_lock_irq(&phba->hbalock);
1376                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1377                 spin_unlock_irq(&phba->hbalock);
1378                 return;
1379         }
1380
1381         lpfc_reg_fcfi(phba, fcf_mbxq);
1382         fcf_mbxq->vport = phba->pport;
1383         fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1384         rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1385         if (rc == MBX_NOT_FINISHED) {
1386                 spin_lock_irq(&phba->hbalock);
1387                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1388                 spin_unlock_irq(&phba->hbalock);
1389                 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1390         }
1391
1392         return;
1393 }
1394
1395 /**
1396  * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1397  * @phba: pointer to lpfc hba data structure.
1398  * @new_fcf_record: pointer to fcf record.
1399  * @boot_flag: Indicates if this record used by boot bios.
1400  * @addr_mode: The address mode to be used by this FCF
1401  * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1402  *
1403  * This routine compare the fcf record with connect list obtained from the
1404  * config region to decide if this FCF can be used for SAN discovery. It returns
1405  * 1 if this record can be used for SAN discovery else return zero. If this FCF
1406  * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1407  * is used by boot bios and addr_mode will indicate the addressing mode to be
1408  * used for this FCF when the function returns.
1409  * If the FCF record need to be used with a particular vlan id, the vlan is
1410  * set in the vlan_id on return of the function. If not VLAN tagging need to
1411  * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
1412  **/
1413 static int
1414 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1415                         struct fcf_record *new_fcf_record,
1416                         uint32_t *boot_flag, uint32_t *addr_mode,
1417                         uint16_t *vlan_id)
1418 {
1419         struct lpfc_fcf_conn_entry *conn_entry;
1420         int i, j, fcf_vlan_id = 0;
1421
1422         /* Find the lowest VLAN id in the FCF record */
1423         for (i = 0; i < 512; i++) {
1424                 if (new_fcf_record->vlan_bitmap[i]) {
1425                         fcf_vlan_id = i * 8;
1426                         j = 0;
1427                         while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1428                                 j++;
1429                                 fcf_vlan_id++;
1430                         }
1431                         break;
1432                 }
1433         }
1434
1435         /* If FCF not available return 0 */
1436         if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1437                 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record))
1438                 return 0;
1439
1440         if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1441                 *boot_flag = 0;
1442                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1443                                 new_fcf_record);
1444                 if (phba->valid_vlan)
1445                         *vlan_id = phba->vlan_id;
1446                 else
1447                         *vlan_id = LPFC_FCOE_NULL_VID;
1448                 return 1;
1449         }
1450
1451         /*
1452          * If there are no FCF connection table entry, driver connect to all
1453          * FCFs.
1454          */
1455         if (list_empty(&phba->fcf_conn_rec_list)) {
1456                 *boot_flag = 0;
1457                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1458                         new_fcf_record);
1459
1460                 /*
1461                  * When there are no FCF connect entries, use driver's default
1462                  * addressing mode - FPMA.
1463                  */
1464                 if (*addr_mode & LPFC_FCF_FPMA)
1465                         *addr_mode = LPFC_FCF_FPMA;
1466
1467                 /* If FCF record report a vlan id use that vlan id */
1468                 if (fcf_vlan_id)
1469                         *vlan_id = fcf_vlan_id;
1470                 else
1471                         *vlan_id = LPFC_FCOE_NULL_VID;
1472                 return 1;
1473         }
1474
1475         list_for_each_entry(conn_entry,
1476                             &phba->fcf_conn_rec_list, list) {
1477                 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1478                         continue;
1479
1480                 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1481                         !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1482                                              new_fcf_record))
1483                         continue;
1484                 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
1485                         !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
1486                                             new_fcf_record))
1487                         continue;
1488                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1489                         /*
1490                          * If the vlan bit map does not have the bit set for the
1491                          * vlan id to be used, then it is not a match.
1492                          */
1493                         if (!(new_fcf_record->vlan_bitmap
1494                                 [conn_entry->conn_rec.vlan_tag / 8] &
1495                                 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
1496                                 continue;
1497                 }
1498
1499                 /*
1500                  * If connection record does not support any addressing mode,
1501                  * skip the FCF record.
1502                  */
1503                 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
1504                         & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
1505                         continue;
1506
1507                 /*
1508                  * Check if the connection record specifies a required
1509                  * addressing mode.
1510                  */
1511                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1512                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
1513
1514                         /*
1515                          * If SPMA required but FCF not support this continue.
1516                          */
1517                         if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1518                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1519                                         new_fcf_record) & LPFC_FCF_SPMA))
1520                                 continue;
1521
1522                         /*
1523                          * If FPMA required but FCF not support this continue.
1524                          */
1525                         if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1526                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1527                                 new_fcf_record) & LPFC_FCF_FPMA))
1528                                 continue;
1529                 }
1530
1531                 /*
1532                  * This fcf record matches filtering criteria.
1533                  */
1534                 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
1535                         *boot_flag = 1;
1536                 else
1537                         *boot_flag = 0;
1538
1539                 /*
1540                  * If user did not specify any addressing mode, or if the
1541                  * preferred addressing mode specified by user is not supported
1542                  * by FCF, allow fabric to pick the addressing mode.
1543                  */
1544                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1545                                 new_fcf_record);
1546                 /*
1547                  * If the user specified a required address mode, assign that
1548                  * address mode
1549                  */
1550                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1551                         (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
1552                         *addr_mode = (conn_entry->conn_rec.flags &
1553                                 FCFCNCT_AM_SPMA) ?
1554                                 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
1555                 /*
1556                  * If the user specified a preferred address mode, use the
1557                  * addr mode only if FCF support the addr_mode.
1558                  */
1559                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1560                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1561                         (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1562                         (*addr_mode & LPFC_FCF_SPMA))
1563                                 *addr_mode = LPFC_FCF_SPMA;
1564                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1565                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1566                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1567                         (*addr_mode & LPFC_FCF_FPMA))
1568                                 *addr_mode = LPFC_FCF_FPMA;
1569
1570                 /* If matching connect list has a vlan id, use it */
1571                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
1572                         *vlan_id = conn_entry->conn_rec.vlan_tag;
1573                 /*
1574                  * If no vlan id is specified in connect list, use the vlan id
1575                  * in the FCF record
1576                  */
1577                 else if (fcf_vlan_id)
1578                         *vlan_id = fcf_vlan_id;
1579                 else
1580                         *vlan_id = LPFC_FCOE_NULL_VID;
1581
1582                 return 1;
1583         }
1584
1585         return 0;
1586 }
1587
1588 /**
1589  * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
1590  * @phba: pointer to lpfc hba data structure.
1591  * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
1592  *
1593  * This function check if there is any fcoe event pending while driver
1594  * scan FCF entries. If there is any pending event, it will restart the
1595  * FCF saning and return 1 else return 0.
1596  */
1597 int
1598 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
1599 {
1600         /*
1601          * If the Link is up and no FCoE events while in the
1602          * FCF discovery, no need to restart FCF discovery.
1603          */
1604         if ((phba->link_state  >= LPFC_LINK_UP) &&
1605             (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
1606                 return 0;
1607
1608         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1609                         "2768 Pending link or FCF event during current "
1610                         "handling of the previous event: link_state:x%x, "
1611                         "evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
1612                         phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
1613                         phba->fcoe_eventtag);
1614
1615         spin_lock_irq(&phba->hbalock);
1616         phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
1617         spin_unlock_irq(&phba->hbalock);
1618
1619         if (phba->link_state >= LPFC_LINK_UP) {
1620                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1621                                 "2780 Restart FCF table scan due to "
1622                                 "pending FCF event:evt_tag_at_scan:x%x, "
1623                                 "evt_tag_current:x%x\n",
1624                                 phba->fcoe_eventtag_at_fcf_scan,
1625                                 phba->fcoe_eventtag);
1626                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
1627         } else {
1628                 /*
1629                  * Do not continue FCF discovery and clear FCF_TS_INPROG
1630                  * flag
1631                  */
1632                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1633                                 "2833 Stop FCF discovery process due to link "
1634                                 "state change (x%x)\n", phba->link_state);
1635                 spin_lock_irq(&phba->hbalock);
1636                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1637                 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
1638                 spin_unlock_irq(&phba->hbalock);
1639         }
1640
1641         /* Unregister the currently registered FCF if required */
1642         if (unreg_fcf) {
1643                 spin_lock_irq(&phba->hbalock);
1644                 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
1645                 spin_unlock_irq(&phba->hbalock);
1646                 lpfc_sli4_unregister_fcf(phba);
1647         }
1648         return 1;
1649 }
1650
1651 /**
1652  * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
1653  * @phba: pointer to lpfc hba data structure.
1654  * @fcf_cnt: number of eligible fcf record seen so far.
1655  *
1656  * This function makes an running random selection decision on FCF record to
1657  * use through a sequence of @fcf_cnt eligible FCF records with equal
1658  * probability. To perform integer manunipulation of random numbers with
1659  * size unit32_t, the lower 16 bits of the 32-bit random number returned
1660  * from random32() are taken as the random random number generated.
1661  *
1662  * Returns true when outcome is for the newly read FCF record should be
1663  * chosen; otherwise, return false when outcome is for keeping the previously
1664  * chosen FCF record.
1665  **/
1666 static bool
1667 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
1668 {
1669         uint32_t rand_num;
1670
1671         /* Get 16-bit uniform random number */
1672         rand_num = (0xFFFF & random32());
1673
1674         /* Decision with probability 1/fcf_cnt */
1675         if ((fcf_cnt * rand_num) < 0xFFFF)
1676                 return true;
1677         else
1678                 return false;
1679 }
1680
1681 /**
1682  * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
1683  * @phba: pointer to lpfc hba data structure.
1684  * @mboxq: pointer to mailbox object.
1685  * @next_fcf_index: pointer to holder of next fcf index.
1686  *
1687  * This routine parses the non-embedded fcf mailbox command by performing the
1688  * necessarily error checking, non-embedded read FCF record mailbox command
1689  * SGE parsing, and endianness swapping.
1690  *
1691  * Returns the pointer to the new FCF record in the non-embedded mailbox
1692  * command DMA memory if successfully, other NULL.
1693  */
1694 static struct fcf_record *
1695 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
1696                              uint16_t *next_fcf_index)
1697 {
1698         void *virt_addr;
1699         dma_addr_t phys_addr;
1700         struct lpfc_mbx_sge sge;
1701         struct lpfc_mbx_read_fcf_tbl *read_fcf;
1702         uint32_t shdr_status, shdr_add_status;
1703         union lpfc_sli4_cfg_shdr *shdr;
1704         struct fcf_record *new_fcf_record;
1705
1706         /* Get the first SGE entry from the non-embedded DMA memory. This
1707          * routine only uses a single SGE.
1708          */
1709         lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
1710         phys_addr = getPaddr(sge.pa_hi, sge.pa_lo);
1711         if (unlikely(!mboxq->sge_array)) {
1712                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1713                                 "2524 Failed to get the non-embedded SGE "
1714                                 "virtual address\n");
1715                 return NULL;
1716         }
1717         virt_addr = mboxq->sge_array->addr[0];
1718
1719         shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
1720         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
1721         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
1722         if (shdr_status || shdr_add_status) {
1723                 if (shdr_status == STATUS_FCF_TABLE_EMPTY)
1724                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1725                                         "2726 READ_FCF_RECORD Indicates empty "
1726                                         "FCF table.\n");
1727                 else
1728                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1729                                         "2521 READ_FCF_RECORD mailbox failed "
1730                                         "with status x%x add_status x%x, "
1731                                         "mbx\n", shdr_status, shdr_add_status);
1732                 return NULL;
1733         }
1734
1735         /* Interpreting the returned information of the FCF record */
1736         read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
1737         lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
1738                               sizeof(struct lpfc_mbx_read_fcf_tbl));
1739         *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
1740         new_fcf_record = (struct fcf_record *)(virt_addr +
1741                           sizeof(struct lpfc_mbx_read_fcf_tbl));
1742         lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
1743                                 offsetof(struct fcf_record, vlan_bitmap));
1744         new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
1745         new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
1746
1747         return new_fcf_record;
1748 }
1749
1750 /**
1751  * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
1752  * @phba: pointer to lpfc hba data structure.
1753  * @fcf_record: pointer to the fcf record.
1754  * @vlan_id: the lowest vlan identifier associated to this fcf record.
1755  * @next_fcf_index: the index to the next fcf record in hba's fcf table.
1756  *
1757  * This routine logs the detailed FCF record if the LOG_FIP loggin is
1758  * enabled.
1759  **/
1760 static void
1761 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
1762                               struct fcf_record *fcf_record,
1763                               uint16_t vlan_id,
1764                               uint16_t next_fcf_index)
1765 {
1766         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1767                         "2764 READ_FCF_RECORD:\n"
1768                         "\tFCF_Index     : x%x\n"
1769                         "\tFCF_Avail     : x%x\n"
1770                         "\tFCF_Valid     : x%x\n"
1771                         "\tFIP_Priority  : x%x\n"
1772                         "\tMAC_Provider  : x%x\n"
1773                         "\tLowest VLANID : x%x\n"
1774                         "\tFCF_MAC Addr  : x%x:%x:%x:%x:%x:%x\n"
1775                         "\tFabric_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1776                         "\tSwitch_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1777                         "\tNext_FCF_Index: x%x\n",
1778                         bf_get(lpfc_fcf_record_fcf_index, fcf_record),
1779                         bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
1780                         bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
1781                         fcf_record->fip_priority,
1782                         bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
1783                         vlan_id,
1784                         bf_get(lpfc_fcf_record_mac_0, fcf_record),
1785                         bf_get(lpfc_fcf_record_mac_1, fcf_record),
1786                         bf_get(lpfc_fcf_record_mac_2, fcf_record),
1787                         bf_get(lpfc_fcf_record_mac_3, fcf_record),
1788                         bf_get(lpfc_fcf_record_mac_4, fcf_record),
1789                         bf_get(lpfc_fcf_record_mac_5, fcf_record),
1790                         bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
1791                         bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
1792                         bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
1793                         bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
1794                         bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
1795                         bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
1796                         bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
1797                         bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
1798                         bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
1799                         bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
1800                         bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
1801                         bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
1802                         bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
1803                         bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
1804                         bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
1805                         bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
1806                         next_fcf_index);
1807 }
1808
1809 /**
1810  lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
1811  * @phba: pointer to lpfc hba data structure.
1812  * @fcf_rec: pointer to an existing FCF record.
1813  * @new_fcf_record: pointer to a new FCF record.
1814  * @new_vlan_id: vlan id from the new FCF record.
1815  *
1816  * This function performs matching test of a new FCF record against an existing
1817  * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
1818  * will not be used as part of the FCF record matching criteria.
1819  *
1820  * Returns true if all the fields matching, otherwise returns false.
1821  */
1822 static bool
1823 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
1824                            struct lpfc_fcf_rec *fcf_rec,
1825                            struct fcf_record *new_fcf_record,
1826                            uint16_t new_vlan_id)
1827 {
1828         if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
1829                 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
1830                         return false;
1831         if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
1832                 return false;
1833         if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
1834                 return false;
1835         if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
1836                 return false;
1837         return true;
1838 }
1839
1840 /**
1841  * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf
1842  * @vport: Pointer to vport object.
1843  * @fcf_index: index to next fcf.
1844  *
1845  * This function processing the roundrobin fcf failover to next fcf index.
1846  * When this function is invoked, there will be a current fcf registered
1847  * for flogi.
1848  * Return: 0 for continue retrying flogi on currently registered fcf;
1849  *         1 for stop flogi on currently registered fcf;
1850  */
1851 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index)
1852 {
1853         struct lpfc_hba *phba = vport->phba;
1854         int rc;
1855
1856         if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
1857                 spin_lock_irq(&phba->hbalock);
1858                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
1859                         spin_unlock_irq(&phba->hbalock);
1860                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1861                                         "2872 Devloss tmo with no eligible "
1862                                         "FCF, unregister in-use FCF (x%x) "
1863                                         "and rescan FCF table\n",
1864                                         phba->fcf.current_rec.fcf_indx);
1865                         lpfc_unregister_fcf_rescan(phba);
1866                         goto stop_flogi_current_fcf;
1867                 }
1868                 /* Mark the end to FLOGI roundrobin failover */
1869                 phba->hba_flag &= ~FCF_RR_INPROG;
1870                 /* Allow action to new fcf asynchronous event */
1871                 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
1872                 spin_unlock_irq(&phba->hbalock);
1873                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1874                                 "2865 No FCF available, stop roundrobin FCF "
1875                                 "failover and change port state:x%x/x%x\n",
1876                                 phba->pport->port_state, LPFC_VPORT_UNKNOWN);
1877                 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
1878                 goto stop_flogi_current_fcf;
1879         } else {
1880                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS,
1881                                 "2794 Try FLOGI roundrobin FCF failover to "
1882                                 "(x%x)\n", fcf_index);
1883                 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index);
1884                 if (rc)
1885                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
1886                                         "2761 FLOGI roundrobin FCF failover "
1887                                         "failed (rc:x%x) to read FCF (x%x)\n",
1888                                         rc, phba->fcf.current_rec.fcf_indx);
1889                 else
1890                         goto stop_flogi_current_fcf;
1891         }
1892         return 0;
1893
1894 stop_flogi_current_fcf:
1895         lpfc_can_disctmo(vport);
1896         return 1;
1897 }
1898
1899 /**
1900  * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
1901  * @phba: pointer to lpfc hba data structure.
1902  * @mboxq: pointer to mailbox object.
1903  *
1904  * This function iterates through all the fcf records available in
1905  * HBA and chooses the optimal FCF record for discovery. After finding
1906  * the FCF for discovery it registers the FCF record and kicks start
1907  * discovery.
1908  * If FCF_IN_USE flag is set in currently used FCF, the routine tries to
1909  * use an FCF record which matches fabric name and mac address of the
1910  * currently used FCF record.
1911  * If the driver supports only one FCF, it will try to use the FCF record
1912  * used by BOOT_BIOS.
1913  */
1914 void
1915 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1916 {
1917         struct fcf_record *new_fcf_record;
1918         uint32_t boot_flag, addr_mode;
1919         uint16_t fcf_index, next_fcf_index;
1920         struct lpfc_fcf_rec *fcf_rec = NULL;
1921         uint16_t vlan_id;
1922         uint32_t seed;
1923         bool select_new_fcf;
1924         int rc;
1925
1926         /* If there is pending FCoE event restart FCF table scan */
1927         if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) {
1928                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1929                 return;
1930         }
1931
1932         /* Parse the FCF record from the non-embedded mailbox command */
1933         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
1934                                                       &next_fcf_index);
1935         if (!new_fcf_record) {
1936                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1937                                 "2765 Mailbox command READ_FCF_RECORD "
1938                                 "failed to retrieve a FCF record.\n");
1939                 /* Let next new FCF event trigger fast failover */
1940                 spin_lock_irq(&phba->hbalock);
1941                 phba->hba_flag &= ~FCF_TS_INPROG;
1942                 spin_unlock_irq(&phba->hbalock);
1943                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1944                 return;
1945         }
1946
1947         /* Check the FCF record against the connection list */
1948         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
1949                                       &addr_mode, &vlan_id);
1950
1951         /* Log the FCF record information if turned on */
1952         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
1953                                       next_fcf_index);
1954
1955         /*
1956          * If the fcf record does not match with connect list entries
1957          * read the next entry; otherwise, this is an eligible FCF
1958          * record for roundrobin FCF failover.
1959          */
1960         if (!rc) {
1961                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
1962                                 "2781 FCF (x%x) failed connection "
1963                                 "list check: (x%x/x%x)\n",
1964                                 bf_get(lpfc_fcf_record_fcf_index,
1965                                        new_fcf_record),
1966                                 bf_get(lpfc_fcf_record_fcf_avail,
1967                                        new_fcf_record),
1968                                 bf_get(lpfc_fcf_record_fcf_valid,
1969                                        new_fcf_record));
1970                 if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
1971                     lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
1972                     new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
1973                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) !=
1974                             phba->fcf.current_rec.fcf_indx) {
1975                                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1976                                         "2862 FCF (x%x) matches property "
1977                                         "of in-use FCF (x%x)\n",
1978                                         bf_get(lpfc_fcf_record_fcf_index,
1979                                                new_fcf_record),
1980                                         phba->fcf.current_rec.fcf_indx);
1981                                 goto read_next_fcf;
1982                         }
1983                         /*
1984                          * In case the current in-use FCF record becomes
1985                          * invalid/unavailable during FCF discovery that
1986                          * was not triggered by fast FCF failover process,
1987                          * treat it as fast FCF failover.
1988                          */
1989                         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
1990                             !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
1991                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
1992                                                 "2835 Invalid in-use FCF "
1993                                                 "(x%x), enter FCF failover "
1994                                                 "table scan.\n",
1995                                                 phba->fcf.current_rec.fcf_indx);
1996                                 spin_lock_irq(&phba->hbalock);
1997                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
1998                                 spin_unlock_irq(&phba->hbalock);
1999                                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2000                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2001                                                 LPFC_FCOE_FCF_GET_FIRST);
2002                                 return;
2003                         }
2004                 }
2005                 goto read_next_fcf;
2006         } else {
2007                 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2008                 rc = lpfc_sli4_fcf_rr_index_set(phba, fcf_index);
2009                 if (rc)
2010                         goto read_next_fcf;
2011         }
2012
2013         /*
2014          * If this is not the first FCF discovery of the HBA, use last
2015          * FCF record for the discovery. The condition that a rescan
2016          * matches the in-use FCF record: fabric name, switch name, mac
2017          * address, and vlan_id.
2018          */
2019         spin_lock_irq(&phba->hbalock);
2020         if (phba->fcf.fcf_flag & FCF_IN_USE) {
2021                 if (lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2022                     new_fcf_record, vlan_id)) {
2023                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) ==
2024                             phba->fcf.current_rec.fcf_indx) {
2025                                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2026                                 if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
2027                                         /* Stop FCF redisc wait timer */
2028                                         __lpfc_sli4_stop_fcf_redisc_wait_timer(
2029                                                                         phba);
2030                                 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2031                                         /* Fast failover, mark completed */
2032                                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2033                                 spin_unlock_irq(&phba->hbalock);
2034                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2035                                                 "2836 New FCF matches in-use "
2036                                                 "FCF (x%x)\n",
2037                                                 phba->fcf.current_rec.fcf_indx);
2038                                 goto out;
2039                         } else
2040                                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
2041                                         "2863 New FCF (x%x) matches "
2042                                         "property of in-use FCF (x%x)\n",
2043                                         bf_get(lpfc_fcf_record_fcf_index,
2044                                                new_fcf_record),
2045                                         phba->fcf.current_rec.fcf_indx);
2046                 }
2047                 /*
2048                  * Read next FCF record from HBA searching for the matching
2049                  * with in-use record only if not during the fast failover
2050                  * period. In case of fast failover period, it shall try to
2051                  * determine whether the FCF record just read should be the
2052                  * next candidate.
2053                  */
2054                 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2055                         spin_unlock_irq(&phba->hbalock);
2056                         goto read_next_fcf;
2057                 }
2058         }
2059         /*
2060          * Update on failover FCF record only if it's in FCF fast-failover
2061          * period; otherwise, update on current FCF record.
2062          */
2063         if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2064                 fcf_rec = &phba->fcf.failover_rec;
2065         else
2066                 fcf_rec = &phba->fcf.current_rec;
2067
2068         if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
2069                 /*
2070                  * If the driver FCF record does not have boot flag
2071                  * set and new hba fcf record has boot flag set, use
2072                  * the new hba fcf record.
2073                  */
2074                 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
2075                         /* Choose this FCF record */
2076                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2077                                         "2837 Update current FCF record "
2078                                         "(x%x) with new FCF record (x%x)\n",
2079                                         fcf_rec->fcf_indx,
2080                                         bf_get(lpfc_fcf_record_fcf_index,
2081                                         new_fcf_record));
2082                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2083                                         addr_mode, vlan_id, BOOT_ENABLE);
2084                         spin_unlock_irq(&phba->hbalock);
2085                         goto read_next_fcf;
2086                 }
2087                 /*
2088                  * If the driver FCF record has boot flag set and the
2089                  * new hba FCF record does not have boot flag, read
2090                  * the next FCF record.
2091                  */
2092                 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
2093                         spin_unlock_irq(&phba->hbalock);
2094                         goto read_next_fcf;
2095                 }
2096                 /*
2097                  * If the new hba FCF record has lower priority value
2098                  * than the driver FCF record, use the new record.
2099                  */
2100                 if (new_fcf_record->fip_priority < fcf_rec->priority) {
2101                         /* Choose the new FCF record with lower priority */
2102                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2103                                         "2838 Update current FCF record "
2104                                         "(x%x) with new FCF record (x%x)\n",
2105                                         fcf_rec->fcf_indx,
2106                                         bf_get(lpfc_fcf_record_fcf_index,
2107                                                new_fcf_record));
2108                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2109                                         addr_mode, vlan_id, 0);
2110                         /* Reset running random FCF selection count */
2111                         phba->fcf.eligible_fcf_cnt = 1;
2112                 } else if (new_fcf_record->fip_priority == fcf_rec->priority) {
2113                         /* Update running random FCF selection count */
2114                         phba->fcf.eligible_fcf_cnt++;
2115                         select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
2116                                                 phba->fcf.eligible_fcf_cnt);
2117                         if (select_new_fcf) {
2118                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2119                                         "2839 Update current FCF record "
2120                                         "(x%x) with new FCF record (x%x)\n",
2121                                         fcf_rec->fcf_indx,
2122                                         bf_get(lpfc_fcf_record_fcf_index,
2123                                                new_fcf_record));
2124                                 /* Choose the new FCF by random selection */
2125                                 __lpfc_update_fcf_record(phba, fcf_rec,
2126                                                          new_fcf_record,
2127                                                          addr_mode, vlan_id, 0);
2128                         }
2129                 }
2130                 spin_unlock_irq(&phba->hbalock);
2131                 goto read_next_fcf;
2132         }
2133         /*
2134          * This is the first suitable FCF record, choose this record for
2135          * initial best-fit FCF.
2136          */
2137         if (fcf_rec) {
2138                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2139                                 "2840 Update initial FCF candidate "
2140                                 "with FCF (x%x)\n",
2141                                 bf_get(lpfc_fcf_record_fcf_index,
2142                                        new_fcf_record));
2143                 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2144                                          addr_mode, vlan_id, (boot_flag ?
2145                                          BOOT_ENABLE : 0));
2146                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2147                 /* Setup initial running random FCF selection count */
2148                 phba->fcf.eligible_fcf_cnt = 1;
2149                 /* Seeding the random number generator for random selection */
2150                 seed = (uint32_t)(0xFFFFFFFF & jiffies);
2151                 srandom32(seed);
2152         }
2153         spin_unlock_irq(&phba->hbalock);
2154         goto read_next_fcf;
2155
2156 read_next_fcf:
2157         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2158         if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
2159                 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
2160                         /*
2161                          * Case of FCF fast failover scan
2162                          */
2163
2164                         /*
2165                          * It has not found any suitable FCF record, cancel
2166                          * FCF scan inprogress, and do nothing
2167                          */
2168                         if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
2169                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2170                                                "2782 No suitable FCF found: "
2171                                                "(x%x/x%x)\n",
2172                                                phba->fcoe_eventtag_at_fcf_scan,
2173                                                bf_get(lpfc_fcf_record_fcf_index,
2174                                                       new_fcf_record));
2175                                 spin_lock_irq(&phba->hbalock);
2176                                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2177                                         phba->hba_flag &= ~FCF_TS_INPROG;
2178                                         spin_unlock_irq(&phba->hbalock);
2179                                         /* Unregister in-use FCF and rescan */
2180                                         lpfc_printf_log(phba, KERN_INFO,
2181                                                         LOG_FIP,
2182                                                         "2864 On devloss tmo "
2183                                                         "unreg in-use FCF and "
2184                                                         "rescan FCF table\n");
2185                                         lpfc_unregister_fcf_rescan(phba);
2186                                         return;
2187                                 }
2188                                 /*
2189                                  * Let next new FCF event trigger fast failover
2190                                  */
2191                                 phba->hba_flag &= ~FCF_TS_INPROG;
2192                                 spin_unlock_irq(&phba->hbalock);
2193                                 return;
2194                         }
2195                         /*
2196                          * It has found a suitable FCF record that is not
2197                          * the same as in-use FCF record, unregister the
2198                          * in-use FCF record, replace the in-use FCF record
2199                          * with the new FCF record, mark FCF fast failover
2200                          * completed, and then start register the new FCF
2201                          * record.
2202                          */
2203
2204                         /* Unregister the current in-use FCF record */
2205                         lpfc_unregister_fcf(phba);
2206
2207                         /* Replace in-use record with the new record */
2208                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2209                                         "2842 Replace in-use FCF (x%x) "
2210                                         "with failover FCF (x%x)\n",
2211                                         phba->fcf.current_rec.fcf_indx,
2212                                         phba->fcf.failover_rec.fcf_indx);
2213                         memcpy(&phba->fcf.current_rec,
2214                                &phba->fcf.failover_rec,
2215                                sizeof(struct lpfc_fcf_rec));
2216                         /*
2217                          * Mark the fast FCF failover rediscovery completed
2218                          * and the start of the first round of the roundrobin
2219                          * FCF failover.
2220                          */
2221                         spin_lock_irq(&phba->hbalock);
2222                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2223                         spin_unlock_irq(&phba->hbalock);
2224                         /* Register to the new FCF record */
2225                         lpfc_register_fcf(phba);
2226                 } else {
2227                         /*
2228                          * In case of transaction period to fast FCF failover,
2229                          * do nothing when search to the end of the FCF table.
2230                          */
2231                         if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
2232                             (phba->fcf.fcf_flag & FCF_REDISC_PEND))
2233                                 return;
2234
2235                         if (phba->fcf.fcf_flag & FCF_IN_USE) {
2236                                 /*
2237                                  * In case the current in-use FCF record no
2238                                  * longer existed during FCF discovery that
2239                                  * was not triggered by fast FCF failover
2240                                  * process, treat it as fast FCF failover.
2241                                  */
2242                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2243                                                 "2841 In-use FCF record (x%x) "
2244                                                 "not reported, entering fast "
2245                                                 "FCF failover mode scanning.\n",
2246                                                 phba->fcf.current_rec.fcf_indx);
2247                                 spin_lock_irq(&phba->hbalock);
2248                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2249                                 spin_unlock_irq(&phba->hbalock);
2250                                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2251                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2252                                                 LPFC_FCOE_FCF_GET_FIRST);
2253                                 return;
2254                         }
2255                         /* Register to the new FCF record */
2256                         lpfc_register_fcf(phba);
2257                 }
2258         } else
2259                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
2260         return;
2261
2262 out:
2263         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2264         lpfc_register_fcf(phba);
2265
2266         return;
2267 }
2268
2269 /**
2270  * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler
2271  * @phba: pointer to lpfc hba data structure.
2272  * @mboxq: pointer to mailbox object.
2273  *
2274  * This is the callback function for FLOGI failure roundrobin FCF failover
2275  * read FCF record mailbox command from the eligible FCF record bmask for
2276  * performing the failover. If the FCF read back is not valid/available, it
2277  * fails through to retrying FLOGI to the currently registered FCF again.
2278  * Otherwise, if the FCF read back is valid and available, it will set the
2279  * newly read FCF record to the failover FCF record, unregister currently
2280  * registered FCF record, copy the failover FCF record to the current
2281  * FCF record, and then register the current FCF record before proceeding
2282  * to trying FLOGI on the new failover FCF.
2283  */
2284 void
2285 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2286 {
2287         struct fcf_record *new_fcf_record;
2288         uint32_t boot_flag, addr_mode;
2289         uint16_t next_fcf_index, fcf_index;
2290         uint16_t current_fcf_index;
2291         uint16_t vlan_id;
2292         int rc;
2293
2294         /* If link state is not up, stop the roundrobin failover process */
2295         if (phba->link_state < LPFC_LINK_UP) {
2296                 spin_lock_irq(&phba->hbalock);
2297                 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
2298                 phba->hba_flag &= ~FCF_RR_INPROG;
2299                 spin_unlock_irq(&phba->hbalock);
2300                 goto out;
2301         }
2302
2303         /* Parse the FCF record from the non-embedded mailbox command */
2304         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2305                                                       &next_fcf_index);
2306         if (!new_fcf_record) {
2307                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2308                                 "2766 Mailbox command READ_FCF_RECORD "
2309                                 "failed to retrieve a FCF record.\n");
2310                 goto error_out;
2311         }
2312
2313         /* Get the needed parameters from FCF record */
2314         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2315                                       &addr_mode, &vlan_id);
2316
2317         /* Log the FCF record information if turned on */
2318         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2319                                       next_fcf_index);
2320
2321         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2322         if (!rc) {
2323                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2324                                 "2848 Remove ineligible FCF (x%x) from "
2325                                 "from roundrobin bmask\n", fcf_index);
2326                 /* Clear roundrobin bmask bit for ineligible FCF */
2327                 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index);
2328                 /* Perform next round of roundrobin FCF failover */
2329                 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
2330                 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index);
2331                 if (rc)
2332                         goto out;
2333                 goto error_out;
2334         }
2335
2336         if (fcf_index == phba->fcf.current_rec.fcf_indx) {
2337                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2338                                 "2760 Perform FLOGI roundrobin FCF failover: "
2339                                 "FCF (x%x) back to FCF (x%x)\n",
2340                                 phba->fcf.current_rec.fcf_indx, fcf_index);
2341                 /* Wait 500 ms before retrying FLOGI to current FCF */
2342                 msleep(500);
2343                 lpfc_issue_init_vfi(phba->pport);
2344                 goto out;
2345         }
2346
2347         /* Upload new FCF record to the failover FCF record */
2348         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2349                         "2834 Update current FCF (x%x) with new FCF (x%x)\n",
2350                         phba->fcf.failover_rec.fcf_indx, fcf_index);
2351         spin_lock_irq(&phba->hbalock);
2352         __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
2353                                  new_fcf_record, addr_mode, vlan_id,
2354                                  (boot_flag ? BOOT_ENABLE : 0));
2355         spin_unlock_irq(&phba->hbalock);
2356
2357         current_fcf_index = phba->fcf.current_rec.fcf_indx;
2358
2359         /* Unregister the current in-use FCF record */
2360         lpfc_unregister_fcf(phba);
2361
2362         /* Replace in-use record with the new record */
2363         memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
2364                sizeof(struct lpfc_fcf_rec));
2365
2366         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2367                         "2783 Perform FLOGI roundrobin FCF failover: FCF "
2368                         "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index);
2369
2370 error_out:
2371         lpfc_register_fcf(phba);
2372 out:
2373         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2374 }
2375
2376 /**
2377  * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
2378  * @phba: pointer to lpfc hba data structure.
2379  * @mboxq: pointer to mailbox object.
2380  *
2381  * This is the callback function of read FCF record mailbox command for
2382  * updating the eligible FCF bmask for FLOGI failure roundrobin FCF
2383  * failover when a new FCF event happened. If the FCF read back is
2384  * valid/available and it passes the connection list check, it updates
2385  * the bmask for the eligible FCF record for roundrobin failover.
2386  */
2387 void
2388 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2389 {
2390         struct fcf_record *new_fcf_record;
2391         uint32_t boot_flag, addr_mode;
2392         uint16_t fcf_index, next_fcf_index;
2393         uint16_t vlan_id;
2394         int rc;
2395
2396         /* If link state is not up, no need to proceed */
2397         if (phba->link_state < LPFC_LINK_UP)
2398                 goto out;
2399
2400         /* If FCF discovery period is over, no need to proceed */
2401         if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
2402                 goto out;
2403
2404         /* Parse the FCF record from the non-embedded mailbox command */
2405         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2406                                                       &next_fcf_index);
2407         if (!new_fcf_record) {
2408                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2409                                 "2767 Mailbox command READ_FCF_RECORD "
2410                                 "failed to retrieve a FCF record.\n");
2411                 goto out;
2412         }
2413
2414         /* Check the connection list for eligibility */
2415         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2416                                       &addr_mode, &vlan_id);
2417
2418         /* Log the FCF record information if turned on */
2419         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2420                                       next_fcf_index);
2421
2422         if (!rc)
2423                 goto out;
2424
2425         /* Update the eligible FCF record index bmask */
2426         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2427         rc = lpfc_sli4_fcf_rr_index_set(phba, fcf_index);
2428
2429 out:
2430         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2431 }
2432
2433 /**
2434  * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command.
2435  * @phba: pointer to lpfc hba data structure.
2436  * @mboxq: pointer to mailbox data structure.
2437  *
2438  * This function handles completion of init vfi mailbox command.
2439  */
2440 void
2441 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2442 {
2443         struct lpfc_vport *vport = mboxq->vport;
2444
2445         if (mboxq->u.mb.mbxStatus && (mboxq->u.mb.mbxStatus != 0x4002)) {
2446                 lpfc_printf_vlog(vport, KERN_ERR,
2447                                 LOG_MBOX,
2448                                 "2891 Init VFI mailbox failed 0x%x\n",
2449                                 mboxq->u.mb.mbxStatus);
2450                 mempool_free(mboxq, phba->mbox_mem_pool);
2451                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2452                 return;
2453         }
2454         lpfc_initial_flogi(vport);
2455         mempool_free(mboxq, phba->mbox_mem_pool);
2456         return;
2457 }
2458
2459 /**
2460  * lpfc_issue_init_vfi - Issue init_vfi mailbox command.
2461  * @vport: pointer to lpfc_vport data structure.
2462  *
2463  * This function issue a init_vfi mailbox command to initialize the VFI and
2464  * VPI for the physical port.
2465  */
2466 void
2467 lpfc_issue_init_vfi(struct lpfc_vport *vport)
2468 {
2469         LPFC_MBOXQ_t *mboxq;
2470         int rc;
2471         struct lpfc_hba *phba = vport->phba;
2472
2473         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2474         if (!mboxq) {
2475                 lpfc_printf_vlog(vport, KERN_ERR,
2476                         LOG_MBOX, "2892 Failed to allocate "
2477                         "init_vfi mailbox\n");
2478                 return;
2479         }
2480         lpfc_init_vfi(mboxq, vport);
2481         mboxq->mbox_cmpl = lpfc_init_vfi_cmpl;
2482         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
2483         if (rc == MBX_NOT_FINISHED) {
2484                 lpfc_printf_vlog(vport, KERN_ERR,
2485                         LOG_MBOX, "2893 Failed to issue init_vfi mailbox\n");
2486                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
2487         }
2488 }
2489
2490 /**
2491  * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
2492  * @phba: pointer to lpfc hba data structure.
2493  * @mboxq: pointer to mailbox data structure.
2494  *
2495  * This function handles completion of init vpi mailbox command.
2496  */
2497 void
2498 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2499 {
2500         struct lpfc_vport *vport = mboxq->vport;
2501         struct lpfc_nodelist *ndlp;
2502         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2503
2504         if (mboxq->u.mb.mbxStatus) {
2505                 lpfc_printf_vlog(vport, KERN_ERR,
2506                                 LOG_MBOX,
2507                                 "2609 Init VPI mailbox failed 0x%x\n",
2508                                 mboxq->u.mb.mbxStatus);
2509                 mempool_free(mboxq, phba->mbox_mem_pool);
2510                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2511                 return;
2512         }
2513         spin_lock_irq(shost->host_lock);
2514         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
2515         spin_unlock_irq(shost->host_lock);
2516
2517         /* If this port is physical port or FDISC is done, do reg_vpi */
2518         if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
2519                         ndlp = lpfc_findnode_did(vport, Fabric_DID);
2520                         if (!ndlp)
2521                                 lpfc_printf_vlog(vport, KERN_ERR,
2522                                         LOG_DISCOVERY,
2523                                         "2731 Cannot find fabric "
2524                                         "controller node\n");
2525                         else
2526                                 lpfc_register_new_vport(phba, vport, ndlp);
2527                         mempool_free(mboxq, phba->mbox_mem_pool);
2528                         return;
2529         }
2530
2531         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2532                 lpfc_initial_fdisc(vport);
2533         else {
2534                 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
2535                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2536                                  "2606 No NPIV Fabric support\n");
2537         }
2538         mempool_free(mboxq, phba->mbox_mem_pool);
2539         return;
2540 }
2541
2542 /**
2543  * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
2544  * @vport: pointer to lpfc_vport data structure.
2545  *
2546  * This function issue a init_vpi mailbox command to initialize
2547  * VPI for the vport.
2548  */
2549 void
2550 lpfc_issue_init_vpi(struct lpfc_vport *vport)
2551 {
2552         LPFC_MBOXQ_t *mboxq;
2553         int rc;
2554
2555         mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
2556         if (!mboxq) {
2557                 lpfc_printf_vlog(vport, KERN_ERR,
2558                         LOG_MBOX, "2607 Failed to allocate "
2559                         "init_vpi mailbox\n");
2560                 return;
2561         }
2562         lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
2563         mboxq->vport = vport;
2564         mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
2565         rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
2566         if (rc == MBX_NOT_FINISHED) {
2567                 lpfc_printf_vlog(vport, KERN_ERR,
2568                         LOG_MBOX, "2608 Failed to issue init_vpi mailbox\n");
2569                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
2570         }
2571 }
2572
2573 /**
2574  * lpfc_start_fdiscs - send fdiscs for each vports on this port.
2575  * @phba: pointer to lpfc hba data structure.
2576  *
2577  * This function loops through the list of vports on the @phba and issues an
2578  * FDISC if possible.
2579  */
2580 void
2581 lpfc_start_fdiscs(struct lpfc_hba *phba)
2582 {
2583         struct lpfc_vport **vports;
2584         int i;
2585
2586         vports = lpfc_create_vport_work_array(phba);
2587         if (vports != NULL) {
2588                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2589                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
2590                                 continue;
2591                         /* There are no vpi for this vport */
2592                         if (vports[i]->vpi > phba->max_vpi) {
2593                                 lpfc_vport_set_state(vports[i],
2594                                                      FC_VPORT_FAILED);
2595                                 continue;
2596                         }
2597                         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
2598                                 lpfc_vport_set_state(vports[i],
2599                                                      FC_VPORT_LINKDOWN);
2600                                 continue;
2601                         }
2602                         if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
2603                                 lpfc_issue_init_vpi(vports[i]);
2604                                 continue;
2605                         }
2606                         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2607                                 lpfc_initial_fdisc(vports[i]);
2608                         else {
2609                                 lpfc_vport_set_state(vports[i],
2610                                                      FC_VPORT_NO_FABRIC_SUPP);
2611                                 lpfc_printf_vlog(vports[i], KERN_ERR,
2612                                                  LOG_ELS,
2613                                                  "0259 No NPIV "
2614                                                  "Fabric support\n");
2615                         }
2616                 }
2617         }
2618         lpfc_destroy_vport_work_array(phba, vports);
2619 }
2620
2621 void
2622 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2623 {
2624         struct lpfc_dmabuf *dmabuf = mboxq->context1;
2625         struct lpfc_vport *vport = mboxq->vport;
2626         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2627
2628         if (mboxq->u.mb.mbxStatus) {
2629                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2630                          "2018 REG_VFI mbxStatus error x%x "
2631                          "HBA state x%x\n",
2632                          mboxq->u.mb.mbxStatus, vport->port_state);
2633                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
2634                         /* FLOGI failed, use loop map to make discovery list */
2635                         lpfc_disc_list_loopmap(vport);
2636                         /* Start discovery */
2637                         lpfc_disc_start(vport);
2638                         goto fail_free_mem;
2639                 }
2640                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2641                 goto fail_free_mem;
2642         }
2643         /* The VPI is implicitly registered when the VFI is registered */
2644         spin_lock_irq(shost->host_lock);
2645         vport->vpi_state |= LPFC_VPI_REGISTERED;
2646         vport->fc_flag |= FC_VFI_REGISTERED;
2647         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
2648         spin_unlock_irq(shost->host_lock);
2649
2650         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
2651                 /* For private loop just start discovery and we are done. */
2652                 if ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) &&
2653                     (phba->alpa_map[0] == 0) &&
2654                     !(vport->fc_flag & FC_PUBLIC_LOOP)) {
2655                         /* Use loop map to make discovery list */
2656                         lpfc_disc_list_loopmap(vport);
2657                         /* Start discovery */
2658                         lpfc_disc_start(vport);
2659                 } else {
2660                         lpfc_start_fdiscs(phba);
2661                         lpfc_do_scr_ns_plogi(phba, vport);
2662                 }
2663         }
2664
2665 fail_free_mem:
2666         mempool_free(mboxq, phba->mbox_mem_pool);
2667         lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
2668         kfree(dmabuf);
2669         return;
2670 }
2671
2672 static void
2673 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2674 {
2675         MAILBOX_t *mb = &pmb->u.mb;
2676         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
2677         struct lpfc_vport  *vport = pmb->vport;
2678
2679
2680         /* Check for error */
2681         if (mb->mbxStatus) {
2682                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
2683                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2684                                  "0319 READ_SPARAM mbxStatus error x%x "
2685                                  "hba state x%x>\n",
2686                                  mb->mbxStatus, vport->port_state);
2687                 lpfc_linkdown(phba);
2688                 goto out;
2689         }
2690
2691         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
2692                sizeof (struct serv_parm));
2693         if (phba->cfg_soft_wwnn)
2694                 u64_to_wwn(phba->cfg_soft_wwnn,
2695                            vport->fc_sparam.nodeName.u.wwn);
2696         if (phba->cfg_soft_wwpn)
2697                 u64_to_wwn(phba->cfg_soft_wwpn,
2698                            vport->fc_sparam.portName.u.wwn);
2699         memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
2700                sizeof(vport->fc_nodename));
2701         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
2702                sizeof(vport->fc_portname));
2703         if (vport->port_type == LPFC_PHYSICAL_PORT) {
2704                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
2705                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
2706         }
2707
2708         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2709         kfree(mp);
2710         mempool_free(pmb, phba->mbox_mem_pool);
2711         return;
2712
2713 out:
2714         pmb->context1 = NULL;
2715         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2716         kfree(mp);
2717         lpfc_issue_clear_la(phba, vport);
2718         mempool_free(pmb, phba->mbox_mem_pool);
2719         return;
2720 }
2721
2722 static void
2723 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
2724 {
2725         struct lpfc_vport *vport = phba->pport;
2726         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
2727         int i;
2728         struct lpfc_dmabuf *mp;
2729         int rc;
2730         struct fcf_record *fcf_record;
2731
2732         spin_lock_irq(&phba->hbalock);
2733         switch (bf_get(lpfc_mbx_read_top_link_spd, la)) {
2734         case LPFC_LINK_SPEED_1GHZ:
2735         case LPFC_LINK_SPEED_2GHZ:
2736         case LPFC_LINK_SPEED_4GHZ:
2737         case LPFC_LINK_SPEED_8GHZ:
2738         case LPFC_LINK_SPEED_10GHZ:
2739         case LPFC_LINK_SPEED_16GHZ:
2740                 phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la);
2741                 break;
2742         default:
2743                 phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN;
2744                 break;
2745         }
2746
2747         phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la);
2748         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
2749
2750         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
2751                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
2752
2753                 /* if npiv is enabled and this adapter supports npiv log
2754                  * a message that npiv is not supported in this topology
2755                  */
2756                 if (phba->cfg_enable_npiv && phba->max_vpi)
2757                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2758                                 "1309 Link Up Event npiv not supported in loop "
2759                                 "topology\n");
2760                                 /* Get Loop Map information */
2761                 if (bf_get(lpfc_mbx_read_top_il, la))
2762                         vport->fc_flag |= FC_LBIT;
2763
2764                 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la);
2765                 i = la->lilpBde64.tus.f.bdeSize;
2766
2767                 if (i == 0) {
2768                         phba->alpa_map[0] = 0;
2769                 } else {
2770                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
2771                                 int numalpa, j, k;
2772                                 union {
2773                                         uint8_t pamap[16];
2774                                         struct {
2775                                                 uint32_t wd1;
2776                                                 uint32_t wd2;
2777                                                 uint32_t wd3;
2778                                                 uint32_t wd4;
2779                                         } pa;
2780                                 } un;
2781                                 numalpa = phba->alpa_map[0];
2782                                 j = 0;
2783                                 while (j < numalpa) {
2784                                         memset(un.pamap, 0, 16);
2785                                         for (k = 1; j < numalpa; k++) {
2786                                                 un.pamap[k - 1] =
2787                                                         phba->alpa_map[j + 1];
2788                                                 j++;
2789                                                 if (k == 16)
2790                                                         break;
2791                                         }
2792                                         /* Link Up Event ALPA map */
2793                                         lpfc_printf_log(phba,
2794                                                         KERN_WARNING,
2795                                                         LOG_LINK_EVENT,
2796                                                         "1304 Link Up Event "
2797                                                         "ALPA map Data: x%x "
2798                                                         "x%x x%x x%x\n",
2799                                                         un.pa.wd1, un.pa.wd2,
2800                                                         un.pa.wd3, un.pa.wd4);
2801                                 }
2802                         }
2803                 }
2804         } else {
2805                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
2806                         if (phba->max_vpi && phba->cfg_enable_npiv &&
2807                            (phba->sli_rev == 3))
2808                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
2809                 }
2810                 vport->fc_myDID = phba->fc_pref_DID;
2811                 vport->fc_flag |= FC_LBIT;
2812         }
2813         spin_unlock_irq(&phba->hbalock);
2814
2815         lpfc_linkup(phba);
2816         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2817         if (!sparam_mbox)
2818                 goto out;
2819
2820         rc = lpfc_read_sparam(phba, sparam_mbox, 0);
2821         if (rc) {
2822                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
2823                 goto out;
2824         }
2825         sparam_mbox->vport = vport;
2826         sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
2827         rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
2828         if (rc == MBX_NOT_FINISHED) {
2829                 mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
2830                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2831                 kfree(mp);
2832                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
2833                 goto out;
2834         }
2835
2836         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
2837                 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2838                 if (!cfglink_mbox)
2839                         goto out;
2840                 vport->port_state = LPFC_LOCAL_CFG_LINK;
2841                 lpfc_config_link(phba, cfglink_mbox);
2842                 cfglink_mbox->vport = vport;
2843                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
2844                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
2845                 if (rc == MBX_NOT_FINISHED) {
2846                         mempool_free(cfglink_mbox, phba->mbox_mem_pool);
2847                         goto out;
2848                 }
2849         } else {
2850                 vport->port_state = LPFC_VPORT_UNKNOWN;
2851                 /*
2852                  * Add the driver's default FCF record at FCF index 0 now. This
2853                  * is phase 1 implementation that support FCF index 0 and driver
2854                  * defaults.
2855                  */
2856                 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
2857                         fcf_record = kzalloc(sizeof(struct fcf_record),
2858                                         GFP_KERNEL);
2859                         if (unlikely(!fcf_record)) {
2860                                 lpfc_printf_log(phba, KERN_ERR,
2861                                         LOG_MBOX | LOG_SLI,
2862                                         "2554 Could not allocate memory for "
2863                                         "fcf record\n");
2864                                 rc = -ENODEV;
2865                                 goto out;
2866                         }
2867
2868                         lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
2869                                                 LPFC_FCOE_FCF_DEF_INDEX);
2870                         rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
2871                         if (unlikely(rc)) {
2872                                 lpfc_printf_log(phba, KERN_ERR,
2873                                         LOG_MBOX | LOG_SLI,
2874                                         "2013 Could not manually add FCF "
2875                                         "record 0, status %d\n", rc);
2876                                 rc = -ENODEV;
2877                                 kfree(fcf_record);
2878                                 goto out;
2879                         }
2880                         kfree(fcf_record);
2881                 }
2882                 /*
2883                  * The driver is expected to do FIP/FCF. Call the port
2884                  * and get the FCF Table.
2885                  */
2886                 spin_lock_irq(&phba->hbalock);
2887                 if (phba->hba_flag & FCF_TS_INPROG) {
2888                         spin_unlock_irq(&phba->hbalock);
2889                         return;
2890                 }
2891                 /* This is the initial FCF discovery scan */
2892                 phba->fcf.fcf_flag |= FCF_INIT_DISC;
2893                 spin_unlock_irq(&phba->hbalock);
2894                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
2895                                 "2778 Start FCF table scan at linkup\n");
2896                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2897                                                      LPFC_FCOE_FCF_GET_FIRST);
2898                 if (rc) {
2899                         spin_lock_irq(&phba->hbalock);
2900                         phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
2901                         spin_unlock_irq(&phba->hbalock);
2902                         goto out;
2903                 }
2904                 /* Reset FCF roundrobin bmask for new discovery */
2905                 memset(phba->fcf.fcf_rr_bmask, 0,
2906                        sizeof(*phba->fcf.fcf_rr_bmask));
2907         }
2908
2909         return;
2910 out:
2911         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2912         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2913                          "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
2914                          vport->port_state, sparam_mbox, cfglink_mbox);
2915         lpfc_issue_clear_la(phba, vport);
2916         return;
2917 }
2918
2919 static void
2920 lpfc_enable_la(struct lpfc_hba *phba)
2921 {
2922         uint32_t control;
2923         struct lpfc_sli *psli = &phba->sli;
2924         spin_lock_irq(&phba->hbalock);
2925         psli->sli_flag |= LPFC_PROCESS_LA;
2926         if (phba->sli_rev <= LPFC_SLI_REV3) {
2927                 control = readl(phba->HCregaddr);
2928                 control |= HC_LAINT_ENA;
2929                 writel(control, phba->HCregaddr);
2930                 readl(phba->HCregaddr); /* flush */
2931         }
2932         spin_unlock_irq(&phba->hbalock);
2933 }
2934
2935 static void
2936 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
2937 {
2938         lpfc_linkdown(phba);
2939         lpfc_enable_la(phba);
2940         lpfc_unregister_unused_fcf(phba);
2941         /* turn on Link Attention interrupts - no CLEAR_LA needed */
2942 }
2943
2944
2945 /*
2946  * This routine handles processing a READ_TOPOLOGY mailbox
2947  * command upon completion. It is setup in the LPFC_MBOXQ
2948  * as the completion routine when the command is
2949  * handed off to the SLI layer.
2950  */
2951 void
2952 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2953 {
2954         struct lpfc_vport *vport = pmb->vport;
2955         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2956         struct lpfc_mbx_read_top *la;
2957         MAILBOX_t *mb = &pmb->u.mb;
2958         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2959
2960         /* Unblock ELS traffic */
2961         phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
2962         /* Check for error */
2963         if (mb->mbxStatus) {
2964                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
2965                                 "1307 READ_LA mbox error x%x state x%x\n",
2966                                 mb->mbxStatus, vport->port_state);
2967                 lpfc_mbx_issue_link_down(phba);
2968                 phba->link_state = LPFC_HBA_ERROR;
2969                 goto lpfc_mbx_cmpl_read_topology_free_mbuf;
2970         }
2971
2972         la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
2973
2974         memcpy(&phba->alpa_map[0], mp->virt, 128);
2975
2976         spin_lock_irq(shost->host_lock);
2977         if (bf_get(lpfc_mbx_read_top_pb, la))
2978                 vport->fc_flag |= FC_BYPASSED_MODE;
2979         else
2980                 vport->fc_flag &= ~FC_BYPASSED_MODE;
2981         spin_unlock_irq(shost->host_lock);
2982
2983         if ((phba->fc_eventTag  < la->eventTag) ||
2984             (phba->fc_eventTag == la->eventTag)) {
2985                 phba->fc_stat.LinkMultiEvent++;
2986                 if (bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP)
2987                         if (phba->fc_eventTag != 0)
2988                                 lpfc_linkdown(phba);
2989         }
2990
2991         phba->fc_eventTag = la->eventTag;
2992         spin_lock_irq(&phba->hbalock);
2993         if (bf_get(lpfc_mbx_read_top_mm, la))
2994                 phba->sli.sli_flag |= LPFC_MENLO_MAINT;
2995         else
2996                 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
2997         spin_unlock_irq(&phba->hbalock);
2998
2999         phba->link_events++;
3000         if ((bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP) &&
3001             (!bf_get(lpfc_mbx_read_top_mm, la))) {
3002                 phba->fc_stat.LinkUp++;
3003                 if (phba->link_flag & LS_LOOPBACK_MODE) {
3004                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3005                                         "1306 Link Up Event in loop back mode "
3006                                         "x%x received Data: x%x x%x x%x x%x\n",
3007                                         la->eventTag, phba->fc_eventTag,
3008                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3009                                                la),
3010                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3011                                         phba->alpa_map[0]);
3012                 } else {
3013                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3014                                         "1303 Link Up Event x%x received "
3015                                         "Data: x%x x%x x%x x%x x%x x%x %d\n",
3016                                         la->eventTag, phba->fc_eventTag,
3017                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3018                                                la),
3019                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3020                                         phba->alpa_map[0],
3021                                         bf_get(lpfc_mbx_read_top_mm, la),
3022                                         bf_get(lpfc_mbx_read_top_fa, la),
3023                                         phba->wait_4_mlo_maint_flg);
3024                 }
3025                 lpfc_mbx_process_link_up(phba, la);
3026         } else if (bf_get(lpfc_mbx_read_top_att_type, la) ==
3027                    LPFC_ATT_LINK_DOWN) {
3028                 phba->fc_stat.LinkDown++;
3029                 if (phba->link_flag & LS_LOOPBACK_MODE) {
3030                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3031                                 "1308 Link Down Event in loop back mode "
3032                                 "x%x received "
3033                                 "Data: x%x x%x x%x\n",
3034                                 la->eventTag, phba->fc_eventTag,
3035                                 phba->pport->port_state, vport->fc_flag);
3036                 }
3037                 else {
3038                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3039                                 "1305 Link Down Event x%x received "
3040                                 "Data: x%x x%x x%x x%x x%x\n",
3041                                 la->eventTag, phba->fc_eventTag,
3042                                 phba->pport->port_state, vport->fc_flag,
3043                                 bf_get(lpfc_mbx_read_top_mm, la),
3044                                 bf_get(lpfc_mbx_read_top_fa, la));
3045                 }
3046                 lpfc_mbx_issue_link_down(phba);
3047         }
3048         if ((bf_get(lpfc_mbx_read_top_mm, la)) &&
3049             (bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP)) {
3050                 if (phba->link_state != LPFC_LINK_DOWN) {
3051                         phba->fc_stat.LinkDown++;
3052                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3053                                 "1312 Link Down Event x%x received "
3054                                 "Data: x%x x%x x%x\n",
3055                                 la->eventTag, phba->fc_eventTag,
3056                                 phba->pport->port_state, vport->fc_flag);
3057                         lpfc_mbx_issue_link_down(phba);
3058                 } else
3059                         lpfc_enable_la(phba);
3060
3061                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3062                                 "1310 Menlo Maint Mode Link up Event x%x rcvd "
3063                                 "Data: x%x x%x x%x\n",
3064                                 la->eventTag, phba->fc_eventTag,
3065                                 phba->pport->port_state, vport->fc_flag);
3066                 /*
3067                  * The cmnd that triggered this will be waiting for this
3068                  * signal.
3069                  */
3070                 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
3071                 if (phba->wait_4_mlo_maint_flg) {
3072                         phba->wait_4_mlo_maint_flg = 0;
3073                         wake_up_interruptible(&phba->wait_4_mlo_m_q);
3074                 }
3075         }
3076
3077         if (bf_get(lpfc_mbx_read_top_fa, la)) {
3078                 if (bf_get(lpfc_mbx_read_top_mm, la))
3079                         lpfc_issue_clear_la(phba, vport);
3080                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3081                                 "1311 fa %d\n",
3082                                 bf_get(lpfc_mbx_read_top_fa, la));
3083         }
3084
3085 lpfc_mbx_cmpl_read_topology_free_mbuf:
3086         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3087         kfree(mp);
3088         mempool_free(pmb, phba->mbox_mem_pool);
3089         return;
3090 }
3091
3092 /*
3093  * This routine handles processing a REG_LOGIN mailbox
3094  * command upon completion. It is setup in the LPFC_MBOXQ
3095  * as the completion routine when the command is
3096  * handed off to the SLI layer.
3097  */
3098 void
3099 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3100 {
3101         struct lpfc_vport  *vport = pmb->vport;
3102         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3103         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3104         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3105
3106         pmb->context1 = NULL;
3107         pmb->context2 = NULL;
3108
3109         if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
3110                 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
3111
3112         if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL ||
3113             ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
3114                 /* We rcvd a rscn after issuing this
3115                  * mbox reg login, we may have cycled
3116                  * back through the state and be
3117                  * back at reg login state so this
3118                  * mbox needs to be ignored becase
3119                  * there is another reg login in
3120                  * process.
3121                  */
3122                 spin_lock_irq(shost->host_lock);
3123                 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
3124                 spin_unlock_irq(shost->host_lock);
3125         } else
3126                 /* Good status, call state machine */
3127                 lpfc_disc_state_machine(vport, ndlp, pmb,
3128                                 NLP_EVT_CMPL_REG_LOGIN);
3129
3130         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3131         kfree(mp);
3132         mempool_free(pmb, phba->mbox_mem_pool);
3133         /* decrement the node reference count held for this callback
3134          * function.
3135          */
3136         lpfc_nlp_put(ndlp);
3137
3138         return;
3139 }
3140
3141 static void
3142 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3143 {
3144         MAILBOX_t *mb = &pmb->u.mb;
3145         struct lpfc_vport *vport = pmb->vport;
3146         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3147
3148         switch (mb->mbxStatus) {
3149         case 0x0011:
3150         case 0x0020:
3151                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3152                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
3153                                  mb->mbxStatus);
3154                 break;
3155         /* If VPI is busy, reset the HBA */
3156         case 0x9700:
3157                 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3158                         "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n",
3159                         vport->vpi, mb->mbxStatus);
3160                 if (!(phba->pport->load_flag & FC_UNLOADING))
3161                         lpfc_workq_post_event(phba, NULL, NULL,
3162                                 LPFC_EVT_RESET_HBA);
3163         }
3164         spin_lock_irq(shost->host_lock);
3165         vport->vpi_state &= ~LPFC_VPI_REGISTERED;
3166         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3167         spin_unlock_irq(shost->host_lock);
3168         vport->unreg_vpi_cmpl = VPORT_OK;
3169         mempool_free(pmb, phba->mbox_mem_pool);
3170         lpfc_cleanup_vports_rrqs(vport, NULL);
3171         /*
3172          * This shost reference might have been taken at the beginning of
3173          * lpfc_vport_delete()
3174          */
3175         if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
3176                 scsi_host_put(shost);
3177 }
3178
3179 int
3180 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
3181 {
3182         struct lpfc_hba  *phba = vport->phba;
3183         LPFC_MBOXQ_t *mbox;
3184         int rc;
3185
3186         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3187         if (!mbox)
3188                 return 1;
3189
3190         lpfc_unreg_vpi(phba, vport->vpi, mbox);
3191         mbox->vport = vport;
3192         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
3193         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3194         if (rc == MBX_NOT_FINISHED) {
3195                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
3196                                  "1800 Could not issue unreg_vpi\n");
3197                 mempool_free(mbox, phba->mbox_mem_pool);
3198                 vport->unreg_vpi_cmpl = VPORT_ERROR;
3199                 return rc;
3200         }
3201         return 0;
3202 }
3203
3204 static void
3205 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3206 {
3207         struct lpfc_vport *vport = pmb->vport;
3208         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3209         MAILBOX_t *mb = &pmb->u.mb;
3210
3211         switch (mb->mbxStatus) {
3212         case 0x0011:
3213         case 0x9601:
3214         case 0x9602:
3215                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3216                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
3217                                  mb->mbxStatus);
3218                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3219                 spin_lock_irq(shost->host_lock);
3220                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
3221                 spin_unlock_irq(shost->host_lock);
3222                 vport->fc_myDID = 0;
3223                 goto out;
3224         }
3225
3226         spin_lock_irq(shost->host_lock);
3227         vport->vpi_state |= LPFC_VPI_REGISTERED;
3228         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3229         spin_unlock_irq(shost->host_lock);
3230         vport->num_disc_nodes = 0;
3231         /* go thru NPR list and issue ELS PLOGIs */
3232         if (vport->fc_npr_cnt)
3233                 lpfc_els_disc_plogi(vport);
3234
3235         if (!vport->num_disc_nodes) {
3236                 spin_lock_irq(shost->host_lock);
3237                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
3238                 spin_unlock_irq(shost->host_lock);
3239                 lpfc_can_disctmo(vport);
3240         }
3241         vport->port_state = LPFC_VPORT_READY;
3242
3243 out:
3244         mempool_free(pmb, phba->mbox_mem_pool);
3245         return;
3246 }
3247
3248 /**
3249  * lpfc_create_static_vport - Read HBA config region to create static vports.
3250  * @phba: pointer to lpfc hba data structure.
3251  *
3252  * This routine issue a DUMP mailbox command for config region 22 to get
3253  * the list of static vports to be created. The function create vports
3254  * based on the information returned from the HBA.
3255  **/
3256 void
3257 lpfc_create_static_vport(struct lpfc_hba *phba)
3258 {
3259         LPFC_MBOXQ_t *pmb = NULL;
3260         MAILBOX_t *mb;
3261         struct static_vport_info *vport_info;
3262         int rc = 0, i;
3263         struct fc_vport_identifiers vport_id;
3264         struct fc_vport *new_fc_vport;
3265         struct Scsi_Host *shost;
3266         struct lpfc_vport *vport;
3267         uint16_t offset = 0;
3268         uint8_t *vport_buff;
3269         struct lpfc_dmabuf *mp;
3270         uint32_t byte_count = 0;
3271
3272         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3273         if (!pmb) {
3274                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3275                                 "0542 lpfc_create_static_vport failed to"
3276                                 " allocate mailbox memory\n");
3277                 return;
3278         }
3279
3280         mb = &pmb->u.mb;
3281
3282         vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
3283         if (!vport_info) {
3284                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3285                                 "0543 lpfc_create_static_vport failed to"
3286                                 " allocate vport_info\n");
3287                 mempool_free(pmb, phba->mbox_mem_pool);
3288                 return;
3289         }
3290
3291         vport_buff = (uint8_t *) vport_info;
3292         do {
3293                 if (lpfc_dump_static_vport(phba, pmb, offset))
3294                         goto out;
3295
3296                 pmb->vport = phba->pport;
3297                 rc = lpfc_sli_issue_mbox_wait(phba, pmb, LPFC_MBOX_TMO);
3298
3299                 if ((rc != MBX_SUCCESS) || mb->mbxStatus) {
3300                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3301                                 "0544 lpfc_create_static_vport failed to"
3302                                 " issue dump mailbox command ret 0x%x "
3303                                 "status 0x%x\n",
3304                                 rc, mb->mbxStatus);
3305                         goto out;
3306                 }
3307
3308                 if (phba->sli_rev == LPFC_SLI_REV4) {
3309                         byte_count = pmb->u.mqe.un.mb_words[5];
3310                         mp = (struct lpfc_dmabuf *) pmb->context2;
3311                         if (byte_count > sizeof(struct static_vport_info) -
3312                                         offset)
3313                                 byte_count = sizeof(struct static_vport_info)
3314                                         - offset;
3315                         memcpy(vport_buff + offset, mp->virt, byte_count);
3316                         offset += byte_count;
3317                 } else {
3318                         if (mb->un.varDmp.word_cnt >
3319                                 sizeof(struct static_vport_info) - offset)
3320                                 mb->un.varDmp.word_cnt =
3321                                         sizeof(struct static_vport_info)
3322                                                 - offset;
3323                         byte_count = mb->un.varDmp.word_cnt;
3324                         lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
3325                                 vport_buff + offset,
3326                                 byte_count);
3327
3328                         offset += byte_count;
3329                 }
3330
3331         } while (byte_count &&
3332                 offset < sizeof(struct static_vport_info));
3333
3334
3335         if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
3336                 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
3337                         != VPORT_INFO_REV)) {
3338                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3339                         "0545 lpfc_create_static_vport bad"
3340                         " information header 0x%x 0x%x\n",
3341                         le32_to_cpu(vport_info->signature),
3342                         le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK);
3343
3344                 goto out;
3345         }
3346
3347         shost = lpfc_shost_from_vport(phba->pport);
3348
3349         for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
3350                 memset(&vport_id, 0, sizeof(vport_id));
3351                 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
3352                 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
3353                 if (!vport_id.port_name || !vport_id.node_name)
3354                         continue;
3355
3356                 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
3357                 vport_id.vport_type = FC_PORTTYPE_NPIV;
3358                 vport_id.disable = false;
3359                 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
3360
3361                 if (!new_fc_vport) {
3362                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3363                                 "0546 lpfc_create_static_vport failed to"
3364                                 " create vport\n");
3365                         continue;
3366                 }
3367
3368                 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
3369                 vport->vport_flag |= STATIC_VPORT;
3370         }
3371
3372 out:
3373         kfree(vport_info);
3374         if (rc != MBX_TIMEOUT) {
3375                 if (pmb->context2) {
3376                         mp = (struct lpfc_dmabuf *) pmb->context2;
3377                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3378                         kfree(mp);
3379                 }
3380                 mempool_free(pmb, phba->mbox_mem_pool);
3381         }
3382
3383         return;
3384 }
3385
3386 /*
3387  * This routine handles processing a Fabric REG_LOGIN mailbox
3388  * command upon completion. It is setup in the LPFC_MBOXQ
3389  * as the completion routine when the command is
3390  * handed off to the SLI layer.
3391  */
3392 void
3393 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3394 {
3395         struct lpfc_vport *vport = pmb->vport;
3396         MAILBOX_t *mb = &pmb->u.mb;
3397         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3398         struct lpfc_nodelist *ndlp;
3399
3400         ndlp = (struct lpfc_nodelist *) pmb->context2;
3401         pmb->context1 = NULL;
3402         pmb->context2 = NULL;
3403
3404         if (mb->mbxStatus) {
3405                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
3406                                  "0258 Register Fabric login error: 0x%x\n",
3407                                  mb->mbxStatus);
3408                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3409                 kfree(mp);
3410                 mempool_free(pmb, phba->mbox_mem_pool);
3411
3412                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3413                         /* FLOGI failed, use loop map to make discovery list */
3414                         lpfc_disc_list_loopmap(vport);
3415
3416                         /* Start discovery */
3417                         lpfc_disc_start(vport);
3418                         /* Decrement the reference count to ndlp after the
3419                          * reference to the ndlp are done.
3420                          */
3421                         lpfc_nlp_put(ndlp);
3422                         return;
3423                 }
3424
3425                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3426                 /* Decrement the reference count to ndlp after the reference
3427                  * to the ndlp are done.
3428                  */
3429                 lpfc_nlp_put(ndlp);
3430                 return;
3431         }
3432
3433         ndlp->nlp_rpi = mb->un.varWords[0];
3434         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3435         ndlp->nlp_type |= NLP_FABRIC;
3436         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3437
3438         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3439                 /* when physical port receive logo donot start
3440                  * vport discovery */
3441                 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
3442                         lpfc_start_fdiscs(phba);
3443                 else
3444                         vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ;
3445                 lpfc_do_scr_ns_plogi(phba, vport);
3446         }
3447
3448         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3449         kfree(mp);
3450         mempool_free(pmb, phba->mbox_mem_pool);
3451
3452         /* Drop the reference count from the mbox at the end after
3453          * all the current reference to the ndlp have been done.
3454          */
3455         lpfc_nlp_put(ndlp);
3456         return;
3457 }
3458
3459 /*
3460  * This routine handles processing a NameServer REG_LOGIN mailbox
3461  * command upon completion. It is setup in the LPFC_MBOXQ
3462  * as the completion routine when the command is
3463  * handed off to the SLI layer.
3464  */
3465 void
3466 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3467 {
3468         MAILBOX_t *mb = &pmb->u.mb;
3469         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3470         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3471         struct lpfc_vport *vport = pmb->vport;
3472
3473         pmb->context1 = NULL;
3474         pmb->context2 = NULL;
3475
3476         if (mb->mbxStatus) {
3477 out:
3478                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3479                                  "0260 Register NameServer error: 0x%x\n",
3480                                  mb->mbxStatus);
3481                 /* decrement the node reference count held for this
3482                  * callback function.
3483                  */
3484                 lpfc_nlp_put(ndlp);
3485                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3486                 kfree(mp);
3487                 mempool_free(pmb, phba->mbox_mem_pool);
3488
3489                 /* If no other thread is using the ndlp, free it */
3490                 lpfc_nlp_not_used(ndlp);
3491
3492                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3493                         /*
3494                          * RegLogin failed, use loop map to make discovery
3495                          * list
3496                          */
3497                         lpfc_disc_list_loopmap(vport);
3498
3499                         /* Start discovery */
3500                         lpfc_disc_start(vport);
3501                         return;
3502                 }
3503                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3504                 return;
3505         }
3506
3507         ndlp->nlp_rpi = mb->un.varWords[0];
3508         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3509         ndlp->nlp_type |= NLP_FABRIC;
3510         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3511
3512         if (vport->port_state < LPFC_VPORT_READY) {
3513                 /* Link up discovery requires Fabric registration. */
3514                 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
3515                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
3516                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
3517                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
3518                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
3519
3520                 /* Issue SCR just before NameServer GID_FT Query */
3521                 lpfc_issue_els_scr(vport, SCR_DID, 0);
3522         }
3523
3524         vport->fc_ns_retry = 0;
3525         /* Good status, issue CT Request to NameServer */
3526         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
3527                 /* Cannot issue NameServer Query, so finish up discovery */
3528                 goto out;
3529         }
3530
3531         /* decrement the node reference count held for this
3532          * callback function.
3533          */
3534         lpfc_nlp_put(ndlp);
3535         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3536         kfree(mp);
3537         mempool_free(pmb, phba->mbox_mem_pool);
3538
3539         return;
3540 }
3541
3542 static void
3543 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3544 {
3545         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3546         struct fc_rport  *rport;
3547         struct lpfc_rport_data *rdata;
3548         struct fc_rport_identifiers rport_ids;
3549         struct lpfc_hba  *phba = vport->phba;
3550
3551         /* Remote port has reappeared. Re-register w/ FC transport */
3552         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
3553         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
3554         rport_ids.port_id = ndlp->nlp_DID;
3555         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
3556
3557         /*
3558          * We leave our node pointer in rport->dd_data when we unregister a
3559          * FCP target port.  But fc_remote_port_add zeros the space to which
3560          * rport->dd_data points.  So, if we're reusing a previously
3561          * registered port, drop the reference that we took the last time we
3562          * registered the port.
3563          */
3564         if (ndlp->rport && ndlp->rport->dd_data &&
3565             ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
3566                 lpfc_nlp_put(ndlp);
3567
3568         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
3569                 "rport add:       did:x%x flg:x%x type x%x",
3570                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3571
3572         /* Don't add the remote port if unloading. */
3573         if (vport->load_flag & FC_UNLOADING)
3574                 return;
3575
3576         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
3577         if (!rport || !get_device(&rport->dev)) {
3578                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
3579                            "Warning: fc_remote_port_add failed\n");
3580                 return;
3581         }
3582
3583         /* initialize static port data */
3584         rport->maxframe_size = ndlp->nlp_maxframe;
3585         rport->supported_classes = ndlp->nlp_class_sup;
3586         rdata = rport->dd_data;
3587         rdata->pnode = lpfc_nlp_get(ndlp);
3588
3589         if (ndlp->nlp_type & NLP_FCP_TARGET)
3590                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
3591         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
3592                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
3593
3594
3595         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
3596                 fc_remote_port_rolechg(rport, rport_ids.roles);
3597
3598         if ((rport->scsi_target_id != -1) &&
3599             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
3600                 ndlp->nlp_sid = rport->scsi_target_id;
3601         }
3602         return;
3603 }
3604
3605 static void
3606 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
3607 {
3608         struct fc_rport *rport = ndlp->rport;
3609
3610         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
3611                 "rport delete:    did:x%x flg:x%x type x%x",
3612                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3613
3614         fc_remote_port_delete(rport);
3615
3616         return;
3617 }
3618
3619 static void
3620 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
3621 {
3622         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3623
3624         spin_lock_irq(shost->host_lock);
3625         switch (state) {
3626         case NLP_STE_UNUSED_NODE:
3627                 vport->fc_unused_cnt += count;
3628                 break;
3629         case NLP_STE_PLOGI_ISSUE:
3630                 vport->fc_plogi_cnt += count;
3631                 break;
3632         case NLP_STE_ADISC_ISSUE:
3633                 vport->fc_adisc_cnt += count;
3634                 break;
3635         case NLP_STE_REG_LOGIN_ISSUE:
3636                 vport->fc_reglogin_cnt += count;
3637                 break;
3638         case NLP_STE_PRLI_ISSUE:
3639                 vport->fc_prli_cnt += count;
3640                 break;
3641         case NLP_STE_UNMAPPED_NODE:
3642                 vport->fc_unmap_cnt += count;
3643                 break;
3644         case NLP_STE_MAPPED_NODE:
3645                 vport->fc_map_cnt += count;
3646                 break;
3647         case NLP_STE_NPR_NODE:
3648                 vport->fc_npr_cnt += count;
3649                 break;
3650         }
3651         spin_unlock_irq(shost->host_lock);
3652 }
3653
3654 static void
3655 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3656                        int old_state, int new_state)
3657 {
3658         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3659
3660         if (new_state == NLP_STE_UNMAPPED_NODE) {
3661                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
3662                 ndlp->nlp_type |= NLP_FC_NODE;
3663         }
3664         if (new_state == NLP_STE_MAPPED_NODE)
3665                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
3666         if (new_state == NLP_STE_NPR_NODE)
3667                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
3668
3669         /* Transport interface */
3670         if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
3671                             old_state == NLP_STE_UNMAPPED_NODE)) {
3672                 vport->phba->nport_event_cnt++;
3673                 lpfc_unregister_remote_port(ndlp);
3674         }
3675
3676         if (new_state ==  NLP_STE_MAPPED_NODE ||
3677             new_state == NLP_STE_UNMAPPED_NODE) {
3678                 vport->phba->nport_event_cnt++;
3679                 /*
3680                  * Tell the fc transport about the port, if we haven't
3681                  * already. If we have, and it's a scsi entity, be
3682                  * sure to unblock any attached scsi devices
3683                  */
3684                 lpfc_register_remote_port(vport, ndlp);
3685         }
3686         if ((new_state ==  NLP_STE_MAPPED_NODE) &&
3687                 (vport->stat_data_enabled)) {
3688                 /*
3689                  * A new target is discovered, if there is no buffer for
3690                  * statistical data collection allocate buffer.
3691                  */
3692                 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
3693                                          sizeof(struct lpfc_scsicmd_bkt),
3694                                          GFP_KERNEL);
3695
3696                 if (!ndlp->lat_data)
3697                         lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3698                                 "0286 lpfc_nlp_state_cleanup failed to "
3699                                 "allocate statistical data buffer DID "
3700                                 "0x%x\n", ndlp->nlp_DID);
3701         }
3702         /*
3703          * if we added to Mapped list, but the remote port
3704          * registration failed or assigned a target id outside
3705          * our presentable range - move the node to the
3706          * Unmapped List
3707          */
3708         if (new_state == NLP_STE_MAPPED_NODE &&
3709             (!ndlp->rport ||
3710              ndlp->rport->scsi_target_id == -1 ||
3711              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
3712                 spin_lock_irq(shost->host_lock);
3713                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
3714                 spin_unlock_irq(shost->host_lock);
3715                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3716         }
3717 }
3718
3719 static char *
3720 lpfc_nlp_state_name(char *buffer, size_t size, int state)
3721 {
3722         static char *states[] = {
3723                 [NLP_STE_UNUSED_NODE] = "UNUSED",
3724                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
3725                 [NLP_STE_ADISC_ISSUE] = "ADISC",
3726                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
3727                 [NLP_STE_PRLI_ISSUE] = "PRLI",
3728                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
3729                 [NLP_STE_MAPPED_NODE] = "MAPPED",
3730                 [NLP_STE_NPR_NODE] = "NPR",
3731         };
3732
3733         if (state < NLP_STE_MAX_STATE && states[state])
3734                 strlcpy(buffer, states[state], size);
3735         else
3736                 snprintf(buffer, size, "unknown (%d)", state);
3737         return buffer;
3738 }
3739
3740 void
3741 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3742                    int state)
3743 {
3744         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3745         int  old_state = ndlp->nlp_state;
3746         char name1[16], name2[16];
3747
3748         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3749                          "0904 NPort state transition x%06x, %s -> %s\n",
3750                          ndlp->nlp_DID,
3751                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
3752                          lpfc_nlp_state_name(name2, sizeof(name2), state));
3753
3754         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
3755                 "node statechg    did:x%x old:%d ste:%d",
3756                 ndlp->nlp_DID, old_state, state);
3757
3758         if (old_state == NLP_STE_NPR_NODE &&
3759             state != NLP_STE_NPR_NODE)
3760                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
3761         if (old_state == NLP_STE_UNMAPPED_NODE) {
3762                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
3763                 ndlp->nlp_type &= ~NLP_FC_NODE;
3764         }
3765
3766         if (list_empty(&ndlp->nlp_listp)) {
3767                 spin_lock_irq(shost->host_lock);
3768                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
3769                 spin_unlock_irq(shost->host_lock);
3770         } else if (old_state)
3771                 lpfc_nlp_counters(vport, old_state, -1);
3772
3773         ndlp->nlp_state = state;
3774         lpfc_nlp_counters(vport, state, 1);
3775         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
3776 }
3777
3778 void
3779 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3780 {
3781         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3782
3783         if (list_empty(&ndlp->nlp_listp)) {
3784                 spin_lock_irq(shost->host_lock);
3785                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
3786                 spin_unlock_irq(shost->host_lock);
3787         }
3788 }
3789
3790 void
3791 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3792 {
3793         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3794
3795         lpfc_cancel_retry_delay_tmo(vport, ndlp);
3796         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
3797                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
3798         spin_lock_irq(shost->host_lock);
3799         list_del_init(&ndlp->nlp_listp);
3800         spin_unlock_irq(shost->host_lock);
3801         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
3802                                 NLP_STE_UNUSED_NODE);
3803 }
3804
3805 static void
3806 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3807 {
3808         lpfc_cancel_retry_delay_tmo(vport, ndlp);
3809         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
3810                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
3811         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
3812                                 NLP_STE_UNUSED_NODE);
3813 }
3814 /**
3815  * lpfc_initialize_node - Initialize all fields of node object
3816  * @vport: Pointer to Virtual Port object.
3817  * @ndlp: Pointer to FC node object.
3818  * @did: FC_ID of the node.
3819  *
3820  * This function is always called when node object need to be initialized.
3821  * It initializes all the fields of the node object. Although the reference
3822  * to phba from @ndlp can be obtained indirectly through it's reference to
3823  * @vport, a direct reference to phba is taken here by @ndlp. This is due
3824  * to the life-span of the @ndlp might go beyond the existence of @vport as
3825  * the final release of ndlp is determined by its reference count. And, the
3826  * operation on @ndlp needs the reference to phba.
3827  **/
3828 static inline void
3829 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3830         uint32_t did)
3831 {
3832         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
3833         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
3834         init_timer(&ndlp->nlp_delayfunc);
3835         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
3836         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
3837         ndlp->nlp_DID = did;
3838         ndlp->vport = vport;
3839         ndlp->phba = vport->phba;
3840         ndlp->nlp_sid = NLP_NO_SID;
3841         kref_init(&ndlp->kref);
3842         NLP_INT_NODE_ACT(ndlp);
3843         atomic_set(&ndlp->cmd_pending, 0);
3844         ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
3845         if (vport->phba->sli_rev == LPFC_SLI_REV4)
3846                 ndlp->nlp_rpi = lpfc_sli4_alloc_rpi(vport->phba);
3847 }
3848
3849 struct lpfc_nodelist *
3850 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3851                  int state)
3852 {
3853         struct lpfc_hba *phba = vport->phba;
3854         uint32_t did;
3855         unsigned long flags;
3856
3857         if (!ndlp)
3858                 return NULL;
3859
3860         spin_lock_irqsave(&phba->ndlp_lock, flags);
3861         /* The ndlp should not be in memory free mode */
3862         if (NLP_CHK_FREE_REQ(ndlp)) {
3863                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3864                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3865                                 "0277 lpfc_enable_node: ndlp:x%p "
3866                                 "usgmap:x%x refcnt:%d\n",
3867                                 (void *)ndlp, ndlp->nlp_usg_map,
3868                                 atomic_read(&ndlp->kref.refcount));
3869                 return NULL;
3870         }
3871         /* The ndlp should not already be in active mode */
3872         if (NLP_CHK_NODE_ACT(ndlp)) {
3873                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3874                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3875                                 "0278 lpfc_enable_node: ndlp:x%p "
3876                                 "usgmap:x%x refcnt:%d\n",
3877                                 (void *)ndlp, ndlp->nlp_usg_map,
3878                                 atomic_read(&ndlp->kref.refcount));
3879                 return NULL;
3880         }
3881
3882         /* Keep the original DID */
3883         did = ndlp->nlp_DID;
3884
3885         /* re-initialize ndlp except of ndlp linked list pointer */
3886         memset((((char *)ndlp) + sizeof (struct list_head)), 0,
3887                 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
3888         lpfc_initialize_node(vport, ndlp, did);
3889
3890         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3891
3892         if (state != NLP_STE_UNUSED_NODE)
3893                 lpfc_nlp_set_state(vport, ndlp, state);
3894
3895         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
3896                 "node enable:       did:x%x",
3897                 ndlp->nlp_DID, 0, 0);
3898         return ndlp;
3899 }
3900
3901 void
3902 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3903 {
3904         /*
3905          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
3906          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
3907          * the ndlp from the vport. The ndlp marked as UNUSED on the list
3908          * until ALL other outstanding threads have completed. We check
3909          * that the ndlp not already in the UNUSED state before we proceed.
3910          */
3911         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
3912                 return;
3913         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
3914         if (vport->phba->sli_rev == LPFC_SLI_REV4)
3915                 lpfc_cleanup_vports_rrqs(vport, ndlp);
3916         lpfc_nlp_put(ndlp);
3917         return;
3918 }
3919
3920 /*
3921  * Start / ReStart rescue timer for Discovery / RSCN handling
3922  */
3923 void
3924 lpfc_set_disctmo(struct lpfc_vport *vport)
3925 {
3926         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3927         struct lpfc_hba  *phba = vport->phba;
3928         uint32_t tmo;
3929
3930         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
3931                 /* For FAN, timeout should be greater than edtov */
3932                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
3933         } else {
3934                 /* Normal discovery timeout should be > than ELS/CT timeout
3935                  * FC spec states we need 3 * ratov for CT requests
3936                  */
3937                 tmo = ((phba->fc_ratov * 3) + 3);
3938         }
3939
3940
3941         if (!timer_pending(&vport->fc_disctmo)) {
3942                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3943                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
3944                         tmo, vport->port_state, vport->fc_flag);
3945         }
3946
3947         mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
3948         spin_lock_irq(shost->host_lock);
3949         vport->fc_flag |= FC_DISC_TMO;
3950         spin_unlock_irq(shost->host_lock);
3951
3952         /* Start Discovery Timer state <hba_state> */
3953         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3954                          "0247 Start Discovery Timer state x%x "
3955                          "Data: x%x x%lx x%x x%x\n",
3956                          vport->port_state, tmo,
3957                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
3958                          vport->fc_adisc_cnt);
3959
3960         return;
3961 }
3962
3963 /*
3964  * Cancel rescue timer for Discovery / RSCN handling
3965  */
3966 int
3967 lpfc_can_disctmo(struct lpfc_vport *vport)
3968 {
3969         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3970         unsigned long iflags;
3971
3972         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3973                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
3974                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
3975
3976         /* Turn off discovery timer if its running */
3977         if (vport->fc_flag & FC_DISC_TMO) {
3978                 spin_lock_irqsave(shost->host_lock, iflags);
3979                 vport->fc_flag &= ~FC_DISC_TMO;
3980                 spin_unlock_irqrestore(shost->host_lock, iflags);
3981                 del_timer_sync(&vport->fc_disctmo);
3982                 spin_lock_irqsave(&vport->work_port_lock, iflags);
3983                 vport->work_port_events &= ~WORKER_DISC_TMO;
3984                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
3985         }
3986
3987         /* Cancel Discovery Timer state <hba_state> */
3988         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3989                          "0248 Cancel Discovery Timer state x%x "
3990                          "Data: x%x x%x x%x\n",
3991                          vport->port_state, vport->fc_flag,
3992                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
3993         return 0;
3994 }
3995
3996 /*
3997  * Check specified ring for outstanding IOCB on the SLI queue
3998  * Return true if iocb matches the specified nport
3999  */
4000 int
4001 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
4002                     struct lpfc_sli_ring *pring,
4003                     struct lpfc_iocbq *iocb,
4004                     struct lpfc_nodelist *ndlp)
4005 {
4006         struct lpfc_sli *psli = &phba->sli;
4007         IOCB_t *icmd = &iocb->iocb;
4008         struct lpfc_vport    *vport = ndlp->vport;
4009
4010         if (iocb->vport != vport)
4011                 return 0;
4012
4013         if (pring->ringno == LPFC_ELS_RING) {
4014                 switch (icmd->ulpCommand) {
4015                 case CMD_GEN_REQUEST64_CR:
4016                         if (iocb->context_un.ndlp == ndlp)
4017                                 return 1;
4018                 case CMD_ELS_REQUEST64_CR:
4019                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
4020                                 return 1;
4021                 case CMD_XMIT_ELS_RSP64_CX:
4022                         if (iocb->context1 == (uint8_t *) ndlp)
4023                                 return 1;
4024                 }
4025         } else if (pring->ringno == psli->extra_ring) {
4026
4027         } else if (pring->ringno == psli->fcp_ring) {
4028                 /* Skip match check if waiting to relogin to FCP target */
4029                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
4030                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
4031                         return 0;
4032                 }
4033                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
4034                         return 1;
4035                 }
4036         } else if (pring->ringno == psli->next_ring) {
4037
4038         }
4039         return 0;
4040 }
4041
4042 /*
4043  * Free resources / clean up outstanding I/Os
4044  * associated with nlp_rpi in the LPFC_NODELIST entry.
4045  */
4046 static int
4047 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
4048 {
4049         LIST_HEAD(completions);
4050         struct lpfc_sli *psli;
4051         struct lpfc_sli_ring *pring;
4052         struct lpfc_iocbq *iocb, *next_iocb;
4053         uint32_t i;
4054
4055         lpfc_fabric_abort_nport(ndlp);
4056
4057         /*
4058          * Everything that matches on txcmplq will be returned
4059          * by firmware with a no rpi error.
4060          */
4061         psli = &phba->sli;
4062         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
4063                 /* Now process each ring */
4064                 for (i = 0; i < psli->num_rings; i++) {
4065                         pring = &psli->ring[i];
4066
4067                         spin_lock_irq(&phba->hbalock);
4068                         list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
4069                                                  list) {
4070                                 /*
4071                                  * Check to see if iocb matches the nport we are
4072                                  * looking for
4073                                  */
4074                                 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
4075                                                          ndlp))) {
4076                                         /* It matches, so deque and call compl
4077                                            with an error */
4078                                         list_move_tail(&iocb->list,
4079                                                        &completions);
4080                                         pring->txq_cnt--;
4081                                 }
4082                         }
4083                         spin_unlock_irq(&phba->hbalock);
4084                 }
4085         }
4086
4087         /* Cancel all the IOCBs from the completions list */
4088         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
4089                               IOERR_SLI_ABORTED);
4090
4091         return 0;
4092 }
4093
4094 /*
4095  * Free rpi associated with LPFC_NODELIST entry.
4096  * This routine is called from lpfc_freenode(), when we are removing
4097  * a LPFC_NODELIST entry. It is also called if the driver initiates a
4098  * LOGO that completes successfully, and we are waiting to PLOGI back
4099  * to the remote NPort. In addition, it is called after we receive
4100  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
4101  * we are waiting to PLOGI back to the remote NPort.
4102  */
4103 int
4104 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4105 {
4106         struct lpfc_hba *phba = vport->phba;
4107         LPFC_MBOXQ_t    *mbox;
4108         int rc;
4109
4110         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
4111                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4112                 if (mbox) {
4113                         lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
4114                         mbox->vport = vport;
4115                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4116                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4117                         if (rc == MBX_NOT_FINISHED)
4118                                 mempool_free(mbox, phba->mbox_mem_pool);
4119                 }
4120                 lpfc_no_rpi(phba, ndlp);
4121
4122                 if (phba->sli_rev != LPFC_SLI_REV4)
4123                         ndlp->nlp_rpi = 0;
4124                 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
4125                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
4126                 return 1;
4127         }
4128         return 0;
4129 }
4130
4131 /**
4132  * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
4133  * @phba: pointer to lpfc hba data structure.
4134  *
4135  * This routine is invoked to unregister all the currently registered RPIs
4136  * to the HBA.
4137  **/
4138 void
4139 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
4140 {
4141         struct lpfc_vport **vports;
4142         struct lpfc_nodelist *ndlp;
4143         struct Scsi_Host *shost;
4144         int i;
4145
4146         vports = lpfc_create_vport_work_array(phba);
4147         if (!vports) {
4148                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
4149                         "2884 Vport array allocation failed \n");
4150                 return;
4151         }
4152         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4153                 shost = lpfc_shost_from_vport(vports[i]);
4154                 spin_lock_irq(shost->host_lock);
4155                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
4156                         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
4157                                 /* The mempool_alloc might sleep */
4158                                 spin_unlock_irq(shost->host_lock);
4159                                 lpfc_unreg_rpi(vports[i], ndlp);
4160                                 spin_lock_irq(shost->host_lock);
4161                         }
4162                 }
4163                 spin_unlock_irq(shost->host_lock);
4164         }
4165         lpfc_destroy_vport_work_array(phba, vports);
4166 }
4167
4168 void
4169 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
4170 {
4171         struct lpfc_hba  *phba  = vport->phba;
4172         LPFC_MBOXQ_t     *mbox;
4173         int rc;
4174
4175         if (phba->sli_rev == LPFC_SLI_REV4) {
4176                 lpfc_sli4_unreg_all_rpis(vport);
4177                 return;
4178         }
4179
4180         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4181         if (mbox) {
4182                 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
4183                 mbox->vport = vport;
4184                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4185                 mbox->context1 = NULL;
4186                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
4187                 if (rc != MBX_TIMEOUT)
4188                         mempool_free(mbox, phba->mbox_mem_pool);
4189
4190                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
4191                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
4192                                 "1836 Could not issue "
4193                                 "unreg_login(all_rpis) status %d\n", rc);
4194         }
4195 }
4196
4197 void
4198 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
4199 {
4200         struct lpfc_hba  *phba  = vport->phba;
4201         LPFC_MBOXQ_t     *mbox;
4202         int rc;
4203
4204         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4205         if (mbox) {
4206                 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
4207                 mbox->vport = vport;
4208                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4209                 mbox->context1 = NULL;
4210                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
4211                 if (rc != MBX_TIMEOUT)
4212                         mempool_free(mbox, phba->mbox_mem_pool);
4213
4214                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
4215                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
4216                                          "1815 Could not issue "
4217                                          "unreg_did (default rpis) status %d\n",
4218                                          rc);
4219         }
4220 }
4221
4222 /*
4223  * Free resources associated with LPFC_NODELIST entry
4224  * so it can be freed.
4225  */
4226 static int
4227 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4228 {
4229         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4230         struct lpfc_hba  *phba = vport->phba;
4231         LPFC_MBOXQ_t *mb, *nextmb;
4232         struct lpfc_dmabuf *mp;
4233
4234         /* Cleanup node for NPort <nlp_DID> */
4235         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4236                          "0900 Cleanup node for NPort x%x "
4237                          "Data: x%x x%x x%x\n",
4238                          ndlp->nlp_DID, ndlp->nlp_flag,
4239                          ndlp->nlp_state, ndlp->nlp_rpi);
4240         if (NLP_CHK_FREE_REQ(ndlp)) {
4241                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4242                                 "0280 lpfc_cleanup_node: ndlp:x%p "
4243                                 "usgmap:x%x refcnt:%d\n",
4244                                 (void *)ndlp, ndlp->nlp_usg_map,
4245                                 atomic_read(&ndlp->kref.refcount));
4246                 lpfc_dequeue_node(vport, ndlp);
4247         } else {
4248                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4249                                 "0281 lpfc_cleanup_node: ndlp:x%p "
4250                                 "usgmap:x%x refcnt:%d\n",
4251                                 (void *)ndlp, ndlp->nlp_usg_map,
4252                                 atomic_read(&ndlp->kref.refcount));
4253                 lpfc_disable_node(vport, ndlp);
4254         }
4255
4256         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
4257         if ((mb = phba->sli.mbox_active)) {
4258                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
4259                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
4260                         mb->context2 = NULL;
4261                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4262                 }
4263         }
4264
4265         spin_lock_irq(&phba->hbalock);
4266         /* Cleanup REG_LOGIN completions which are not yet processed */
4267         list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
4268                 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) ||
4269                         (ndlp != (struct lpfc_nodelist *) mb->context2))
4270                         continue;
4271
4272                 mb->context2 = NULL;
4273                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4274         }
4275
4276         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
4277                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
4278                     (ndlp == (struct lpfc_nodelist *) mb->context2)) {
4279                         mp = (struct lpfc_dmabuf *) (mb->context1);
4280                         if (mp) {
4281                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
4282                                 kfree(mp);
4283                         }
4284                         list_del(&mb->list);
4285                         mempool_free(mb, phba->mbox_mem_pool);
4286                         /* We shall not invoke the lpfc_nlp_put to decrement
4287                          * the ndlp reference count as we are in the process
4288                          * of lpfc_nlp_release.
4289                          */
4290                 }
4291         }
4292         spin_unlock_irq(&phba->hbalock);
4293
4294         lpfc_els_abort(phba, ndlp);
4295
4296         spin_lock_irq(shost->host_lock);
4297         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
4298         spin_unlock_irq(shost->host_lock);
4299
4300         ndlp->nlp_last_elscmd = 0;
4301         del_timer_sync(&ndlp->nlp_delayfunc);
4302
4303         list_del_init(&ndlp->els_retry_evt.evt_listp);
4304         list_del_init(&ndlp->dev_loss_evt.evt_listp);
4305         lpfc_cleanup_vports_rrqs(vport, ndlp);
4306         lpfc_unreg_rpi(vport, ndlp);
4307
4308         return 0;
4309 }
4310
4311 /*
4312  * Check to see if we can free the nlp back to the freelist.
4313  * If we are in the middle of using the nlp in the discovery state
4314  * machine, defer the free till we reach the end of the state machine.
4315  */
4316 static void
4317 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4318 {
4319         struct lpfc_hba  *phba = vport->phba;
4320         struct lpfc_rport_data *rdata;
4321         LPFC_MBOXQ_t *mbox;
4322         int rc;
4323
4324         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4325         if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
4326             !(ndlp->nlp_flag & NLP_REG_LOGIN_SEND) &&
4327             !(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
4328                 /* For this case we need to cleanup the default rpi
4329                  * allocated by the firmware.
4330                  */
4331                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
4332                         != NULL) {
4333                         rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID,
4334                             (uint8_t *) &vport->fc_sparam, mbox, ndlp->nlp_rpi);
4335                         if (rc) {
4336                                 mempool_free(mbox, phba->mbox_mem_pool);
4337                         }
4338                         else {
4339                                 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
4340                                 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
4341                                 mbox->vport = vport;
4342                                 mbox->context2 = NULL;
4343                                 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4344                                 if (rc == MBX_NOT_FINISHED) {
4345                                         mempool_free(mbox, phba->mbox_mem_pool);
4346                                 }
4347                         }
4348                 }
4349         }
4350         lpfc_cleanup_node(vport, ndlp);
4351
4352         /*
4353          * We can get here with a non-NULL ndlp->rport because when we
4354          * unregister a rport we don't break the rport/node linkage.  So if we
4355          * do, make sure we don't leaving any dangling pointers behind.
4356          */
4357         if (ndlp->rport) {
4358                 rdata = ndlp->rport->dd_data;
4359                 rdata->pnode = NULL;
4360                 ndlp->rport = NULL;
4361         }
4362 }
4363
4364 static int
4365 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4366               uint32_t did)
4367 {
4368         D_ID mydid, ndlpdid, matchdid;
4369
4370         if (did == Bcast_DID)
4371                 return 0;
4372
4373         /* First check for Direct match */
4374         if (ndlp->nlp_DID == did)
4375                 return 1;
4376
4377         /* Next check for area/domain identically equals 0 match */
4378         mydid.un.word = vport->fc_myDID;
4379         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
4380                 return 0;
4381         }
4382
4383         matchdid.un.word = did;
4384         ndlpdid.un.word = ndlp->nlp_DID;
4385         if (matchdid.un.b.id == ndlpdid.un.b.id) {
4386                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
4387                     (mydid.un.b.area == matchdid.un.b.area)) {
4388                         if ((ndlpdid.un.b.domain == 0) &&
4389                             (ndlpdid.un.b.area == 0)) {
4390                                 if (ndlpdid.un.b.id)
4391                                         return 1;
4392                         }
4393                         return 0;
4394                 }
4395
4396                 matchdid.un.word = ndlp->nlp_DID;
4397                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
4398                     (mydid.un.b.area == ndlpdid.un.b.area)) {
4399                         if ((matchdid.un.b.domain == 0) &&
4400                             (matchdid.un.b.area == 0)) {
4401                                 if (matchdid.un.b.id)
4402                                         return 1;
4403                         }
4404                 }
4405         }
4406         return 0;
4407 }
4408
4409 /* Search for a nodelist entry */
4410 static struct lpfc_nodelist *
4411 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
4412 {
4413         struct lpfc_nodelist *ndlp;
4414         uint32_t data1;
4415
4416         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4417                 if (lpfc_matchdid(vport, ndlp, did)) {
4418                         data1 = (((uint32_t) ndlp->nlp_state << 24) |
4419                                  ((uint32_t) ndlp->nlp_xri << 16) |
4420                                  ((uint32_t) ndlp->nlp_type << 8) |
4421                                  ((uint32_t) ndlp->nlp_rpi & 0xff));
4422                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4423                                          "0929 FIND node DID "
4424                                          "Data: x%p x%x x%x x%x\n",
4425                                          ndlp, ndlp->nlp_DID,
4426                                          ndlp->nlp_flag, data1);
4427                         return ndlp;
4428                 }
4429         }
4430
4431         /* FIND node did <did> NOT FOUND */
4432         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4433                          "0932 FIND node did x%x NOT FOUND.\n", did);
4434         return NULL;
4435 }
4436
4437 struct lpfc_nodelist *
4438 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
4439 {
4440         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4441         struct lpfc_nodelist *ndlp;
4442         unsigned long iflags;
4443
4444         spin_lock_irqsave(shost->host_lock, iflags);
4445         ndlp = __lpfc_findnode_did(vport, did);
4446         spin_unlock_irqrestore(shost->host_lock, iflags);
4447         return ndlp;
4448 }
4449
4450 struct lpfc_nodelist *
4451 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
4452 {
4453         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4454         struct lpfc_nodelist *ndlp;
4455
4456         ndlp = lpfc_findnode_did(vport, did);
4457         if (!ndlp) {
4458                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
4459                     lpfc_rscn_payload_check(vport, did) == 0)
4460                         return NULL;
4461                 ndlp = (struct lpfc_nodelist *)
4462                      mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
4463                 if (!ndlp)
4464                         return NULL;
4465                 lpfc_nlp_init(vport, ndlp, did);
4466                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
4467                 spin_lock_irq(shost->host_lock);
4468                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4469                 spin_unlock_irq(shost->host_lock);
4470                 return ndlp;
4471         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
4472                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
4473                 if (!ndlp)
4474                         return NULL;
4475                 spin_lock_irq(shost->host_lock);
4476                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4477                 spin_unlock_irq(shost->host_lock);
4478                 return ndlp;
4479         }
4480
4481         if ((vport->fc_flag & FC_RSCN_MODE) &&
4482             !(vport->fc_flag & FC_NDISC_ACTIVE)) {
4483                 if (lpfc_rscn_payload_check(vport, did)) {
4484                         /* If we've already received a PLOGI from this NPort
4485                          * we don't need to try to discover it again.
4486                          */
4487                         if (ndlp->nlp_flag & NLP_RCV_PLOGI)
4488                                 return NULL;
4489
4490                         /* Since this node is marked for discovery,
4491                          * delay timeout is not needed.
4492                          */
4493                         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4494                         spin_lock_irq(shost->host_lock);
4495                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4496                         spin_unlock_irq(shost->host_lock);
4497                 } else
4498                         ndlp = NULL;
4499         } else {
4500                 /* If we've already received a PLOGI from this NPort,
4501                  * or we are already in the process of discovery on it,
4502                  * we don't need to try to discover it again.
4503                  */
4504                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
4505                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
4506                     ndlp->nlp_flag & NLP_RCV_PLOGI)
4507                         return NULL;
4508                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
4509                 spin_lock_irq(shost->host_lock);
4510                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4511                 spin_unlock_irq(shost->host_lock);
4512         }
4513         return ndlp;
4514 }
4515
4516 /* Build a list of nodes to discover based on the loopmap */
4517 void
4518 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
4519 {
4520         struct lpfc_hba  *phba = vport->phba;
4521         int j;
4522         uint32_t alpa, index;
4523
4524         if (!lpfc_is_link_up(phba))
4525                 return;
4526
4527         if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
4528                 return;
4529
4530         /* Check for loop map present or not */
4531         if (phba->alpa_map[0]) {
4532                 for (j = 1; j <= phba->alpa_map[0]; j++) {
4533                         alpa = phba->alpa_map[j];
4534                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
4535                                 continue;
4536                         lpfc_setup_disc_node(vport, alpa);
4537                 }
4538         } else {
4539                 /* No alpamap, so try all alpa's */
4540                 for (j = 0; j < FC_MAXLOOP; j++) {
4541                         /* If cfg_scan_down is set, start from highest
4542                          * ALPA (0xef) to lowest (0x1).
4543                          */
4544                         if (vport->cfg_scan_down)
4545                                 index = j;
4546                         else
4547                                 index = FC_MAXLOOP - j - 1;
4548                         alpa = lpfcAlpaArray[index];
4549                         if ((vport->fc_myDID & 0xff) == alpa)
4550                                 continue;
4551                         lpfc_setup_disc_node(vport, alpa);
4552                 }
4553         }
4554         return;
4555 }
4556
4557 void
4558 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
4559 {
4560         LPFC_MBOXQ_t *mbox;
4561         struct lpfc_sli *psli = &phba->sli;
4562         struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
4563         struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
4564         struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
4565         int  rc;
4566
4567         /*
4568          * if it's not a physical port or if we already send
4569          * clear_la then don't send it.
4570          */
4571         if ((phba->link_state >= LPFC_CLEAR_LA) ||
4572             (vport->port_type != LPFC_PHYSICAL_PORT) ||
4573                 (phba->sli_rev == LPFC_SLI_REV4))
4574                 return;
4575
4576                         /* Link up discovery */
4577         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
4578                 phba->link_state = LPFC_CLEAR_LA;
4579                 lpfc_clear_la(phba, mbox);
4580                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
4581                 mbox->vport = vport;
4582                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4583                 if (rc == MBX_NOT_FINISHED) {
4584                         mempool_free(mbox, phba->mbox_mem_pool);
4585                         lpfc_disc_flush_list(vport);
4586                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4587                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4588                         next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4589                         phba->link_state = LPFC_HBA_ERROR;
4590                 }
4591         }
4592 }
4593
4594 /* Reg_vpi to tell firmware to resume normal operations */
4595 void
4596 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
4597 {
4598         LPFC_MBOXQ_t *regvpimbox;
4599
4600         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4601         if (regvpimbox) {
4602                 lpfc_reg_vpi(vport, regvpimbox);
4603                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
4604                 regvpimbox->vport = vport;
4605                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
4606                                         == MBX_NOT_FINISHED) {
4607                         mempool_free(regvpimbox, phba->mbox_mem_pool);
4608                 }
4609         }
4610 }
4611
4612 /* Start Link up / RSCN discovery on NPR nodes */
4613 void
4614 lpfc_disc_start(struct lpfc_vport *vport)
4615 {
4616         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4617         struct lpfc_hba  *phba = vport->phba;
4618         uint32_t num_sent;
4619         uint32_t clear_la_pending;
4620         int did_changed;
4621
4622         if (!lpfc_is_link_up(phba))
4623                 return;
4624
4625         if (phba->link_state == LPFC_CLEAR_LA)
4626                 clear_la_pending = 1;
4627         else
4628                 clear_la_pending = 0;
4629
4630         if (vport->port_state < LPFC_VPORT_READY)
4631                 vport->port_state = LPFC_DISC_AUTH;
4632
4633         lpfc_set_disctmo(vport);
4634
4635         if (vport->fc_prevDID == vport->fc_myDID)
4636                 did_changed = 0;
4637         else
4638                 did_changed = 1;
4639
4640         vport->fc_prevDID = vport->fc_myDID;
4641         vport->num_disc_nodes = 0;
4642
4643         /* Start Discovery state <hba_state> */
4644         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4645                          "0202 Start Discovery hba state x%x "
4646                          "Data: x%x x%x x%x\n",
4647                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
4648                          vport->fc_adisc_cnt);
4649
4650         /* First do ADISCs - if any */
4651         num_sent = lpfc_els_disc_adisc(vport);
4652
4653         if (num_sent)
4654                 return;
4655
4656         /*
4657          * For SLI3, cmpl_reg_vpi will set port_state to READY, and
4658          * continue discovery.
4659          */
4660         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
4661             !(vport->fc_flag & FC_PT2PT) &&
4662             !(vport->fc_flag & FC_RSCN_MODE) &&
4663             (phba->sli_rev < LPFC_SLI_REV4)) {
4664                 lpfc_issue_reg_vpi(phba, vport);
4665                 return;
4666         }
4667
4668         /*
4669          * For SLI2, we need to set port_state to READY and continue
4670          * discovery.
4671          */
4672         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
4673                 /* If we get here, there is nothing to ADISC */
4674                 if (vport->port_type == LPFC_PHYSICAL_PORT)
4675                         lpfc_issue_clear_la(phba, vport);
4676
4677                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
4678                         vport->num_disc_nodes = 0;
4679                         /* go thru NPR nodes and issue ELS PLOGIs */
4680                         if (vport->fc_npr_cnt)
4681                                 lpfc_els_disc_plogi(vport);
4682
4683                         if (!vport->num_disc_nodes) {
4684                                 spin_lock_irq(shost->host_lock);
4685                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
4686                                 spin_unlock_irq(shost->host_lock);
4687                                 lpfc_can_disctmo(vport);
4688                         }
4689                 }
4690                 vport->port_state = LPFC_VPORT_READY;
4691         } else {
4692                 /* Next do PLOGIs - if any */
4693                 num_sent = lpfc_els_disc_plogi(vport);
4694
4695                 if (num_sent)
4696                         return;
4697
4698                 if (vport->fc_flag & FC_RSCN_MODE) {
4699                         /* Check to see if more RSCNs came in while we
4700                          * were processing this one.
4701                          */
4702                         if ((vport->fc_rscn_id_cnt == 0) &&
4703                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
4704                                 spin_lock_irq(shost->host_lock);
4705                                 vport->fc_flag &= ~FC_RSCN_MODE;
4706                                 spin_unlock_irq(shost->host_lock);
4707                                 lpfc_can_disctmo(vport);
4708                         } else
4709                                 lpfc_els_handle_rscn(vport);
4710                 }
4711         }
4712         return;
4713 }
4714
4715 /*
4716  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
4717  *  ring the match the sppecified nodelist.
4718  */
4719 static void
4720 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
4721 {
4722         LIST_HEAD(completions);
4723         struct lpfc_sli *psli;
4724         IOCB_t     *icmd;
4725         struct lpfc_iocbq    *iocb, *next_iocb;
4726         struct lpfc_sli_ring *pring;
4727
4728         psli = &phba->sli;
4729         pring = &psli->ring[LPFC_ELS_RING];
4730
4731         /* Error matching iocb on txq or txcmplq
4732          * First check the txq.
4733          */
4734         spin_lock_irq(&phba->hbalock);
4735         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
4736                 if (iocb->context1 != ndlp) {
4737                         continue;
4738                 }
4739                 icmd = &iocb->iocb;
4740                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
4741                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
4742
4743                         list_move_tail(&iocb->list, &completions);
4744                         pring->txq_cnt--;
4745                 }
4746         }
4747
4748         /* Next check the txcmplq */
4749         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
4750                 if (iocb->context1 != ndlp) {
4751                         continue;
4752                 }
4753                 icmd = &iocb->iocb;
4754                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
4755                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
4756                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
4757                 }
4758         }
4759         spin_unlock_irq(&phba->hbalock);
4760
4761         /* Cancel all the IOCBs from the completions list */
4762         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
4763                               IOERR_SLI_ABORTED);
4764 }
4765
4766 static void
4767 lpfc_disc_flush_list(struct lpfc_vport *vport)
4768 {
4769         struct lpfc_nodelist *ndlp, *next_ndlp;
4770         struct lpfc_hba *phba = vport->phba;
4771
4772         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
4773                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
4774                                          nlp_listp) {
4775                         if (!NLP_CHK_NODE_ACT(ndlp))
4776                                 continue;
4777                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
4778                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
4779                                 lpfc_free_tx(phba, ndlp);
4780                         }
4781                 }
4782         }
4783 }
4784
4785 void
4786 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
4787 {
4788         lpfc_els_flush_rscn(vport);
4789         lpfc_els_flush_cmd(vport);
4790         lpfc_disc_flush_list(vport);
4791 }
4792
4793 /*****************************************************************************/
4794 /*
4795  * NAME:     lpfc_disc_timeout
4796  *
4797  * FUNCTION: Fibre Channel driver discovery timeout routine.
4798  *
4799  * EXECUTION ENVIRONMENT: interrupt only
4800  *
4801  * CALLED FROM:
4802  *      Timer function
4803  *
4804  * RETURNS:
4805  *      none
4806  */
4807 /*****************************************************************************/
4808 void
4809 lpfc_disc_timeout(unsigned long ptr)
4810 {
4811         struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
4812         struct lpfc_hba   *phba = vport->phba;
4813         uint32_t tmo_posted;
4814         unsigned long flags = 0;
4815
4816         if (unlikely(!phba))
4817                 return;
4818
4819         spin_lock_irqsave(&vport->work_port_lock, flags);
4820         tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
4821         if (!tmo_posted)
4822                 vport->work_port_events |= WORKER_DISC_TMO;
4823         spin_unlock_irqrestore(&vport->work_port_lock, flags);
4824
4825         if (!tmo_posted)
4826                 lpfc_worker_wake_up(phba);
4827         return;
4828 }
4829
4830 static void
4831 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
4832 {
4833         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4834         struct lpfc_hba  *phba = vport->phba;
4835         struct lpfc_sli  *psli = &phba->sli;
4836         struct lpfc_nodelist *ndlp, *next_ndlp;
4837         LPFC_MBOXQ_t *initlinkmbox;
4838         int rc, clrlaerr = 0;
4839
4840         if (!(vport->fc_flag & FC_DISC_TMO))
4841                 return;
4842
4843         spin_lock_irq(shost->host_lock);
4844         vport->fc_flag &= ~FC_DISC_TMO;
4845         spin_unlock_irq(shost->host_lock);
4846
4847         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4848                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
4849                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
4850
4851         switch (vport->port_state) {
4852
4853         case LPFC_LOCAL_CFG_LINK:
4854         /* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
4855          * FAN
4856          */
4857                                 /* FAN timeout */
4858                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
4859                                  "0221 FAN timeout\n");
4860                 /* Start discovery by sending FLOGI, clean up old rpis */
4861                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
4862                                          nlp_listp) {
4863                         if (!NLP_CHK_NODE_ACT(ndlp))
4864                                 continue;
4865                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
4866                                 continue;
4867                         if (ndlp->nlp_type & NLP_FABRIC) {
4868                                 /* Clean up the ndlp on Fabric connections */
4869                                 lpfc_drop_node(vport, ndlp);
4870
4871                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
4872                                 /* Fail outstanding IO now since device
4873                                  * is marked for PLOGI.
4874                                  */
4875                                 lpfc_unreg_rpi(vport, ndlp);
4876                         }
4877                 }
4878                 if (vport->port_state != LPFC_FLOGI) {
4879                         if (phba->sli_rev <= LPFC_SLI_REV3)
4880                                 lpfc_initial_flogi(vport);
4881                         else
4882                                 lpfc_issue_init_vfi(vport);
4883                         return;
4884                 }
4885                 break;
4886
4887         case LPFC_FDISC:
4888         case LPFC_FLOGI:
4889         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
4890                 /* Initial FLOGI timeout */
4891                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4892                                  "0222 Initial %s timeout\n",
4893                                  vport->vpi ? "FDISC" : "FLOGI");
4894
4895                 /* Assume no Fabric and go on with discovery.
4896                  * Check for outstanding ELS FLOGI to abort.
4897                  */
4898
4899                 /* FLOGI failed, so just use loop map to make discovery list */
4900                 lpfc_disc_list_loopmap(vport);
4901
4902                 /* Start discovery */
4903                 lpfc_disc_start(vport);
4904                 break;
4905
4906         case LPFC_FABRIC_CFG_LINK:
4907         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
4908            NameServer login */
4909                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4910                                  "0223 Timeout while waiting for "
4911                                  "NameServer login\n");
4912                 /* Next look for NameServer ndlp */
4913                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
4914                 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
4915                         lpfc_els_abort(phba, ndlp);
4916
4917                 /* ReStart discovery */
4918                 goto restart_disc;
4919
4920         case LPFC_NS_QRY:
4921         /* Check for wait for NameServer Rsp timeout */
4922                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4923                                  "0224 NameServer Query timeout "
4924                                  "Data: x%x x%x\n",
4925                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
4926
4927                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
4928                         /* Try it one more time */
4929                         vport->fc_ns_retry++;
4930                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
4931                                          vport->fc_ns_retry, 0);
4932                         if (rc == 0)
4933                                 break;
4934                 }
4935                 vport->fc_ns_retry = 0;
4936
4937 restart_disc:
4938                 /*
4939                  * Discovery is over.
4940                  * set port_state to PORT_READY if SLI2.
4941                  * cmpl_reg_vpi will set port_state to READY for SLI3.
4942                  */
4943                 if (phba->sli_rev < LPFC_SLI_REV4) {
4944                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
4945                                 lpfc_issue_reg_vpi(phba, vport);
4946                         else  { /* NPIV Not enabled */
4947                                 lpfc_issue_clear_la(phba, vport);
4948                                 vport->port_state = LPFC_VPORT_READY;
4949                         }
4950                 }
4951
4952                 /* Setup and issue mailbox INITIALIZE LINK command */
4953                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4954                 if (!initlinkmbox) {
4955                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4956                                          "0206 Device Discovery "
4957                                          "completion error\n");
4958                         phba->link_state = LPFC_HBA_ERROR;
4959                         break;
4960                 }
4961
4962                 lpfc_linkdown(phba);
4963                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
4964                                phba->cfg_link_speed);
4965                 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
4966                 initlinkmbox->vport = vport;
4967                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4968                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
4969                 lpfc_set_loopback_flag(phba);
4970                 if (rc == MBX_NOT_FINISHED)
4971                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
4972
4973                 break;
4974
4975         case LPFC_DISC_AUTH:
4976         /* Node Authentication timeout */
4977                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4978                                  "0227 Node Authentication timeout\n");
4979                 lpfc_disc_flush_list(vport);
4980
4981                 /*
4982                  * set port_state to PORT_READY if SLI2.
4983                  * cmpl_reg_vpi will set port_state to READY for SLI3.
4984                  */
4985                 if (phba->sli_rev < LPFC_SLI_REV4) {
4986                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
4987                                 lpfc_issue_reg_vpi(phba, vport);
4988                         else  { /* NPIV Not enabled */
4989                                 lpfc_issue_clear_la(phba, vport);
4990                                 vport->port_state = LPFC_VPORT_READY;
4991                         }
4992                 }
4993                 break;
4994
4995         case LPFC_VPORT_READY:
4996                 if (vport->fc_flag & FC_RSCN_MODE) {
4997                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4998                                          "0231 RSCN timeout Data: x%x "
4999                                          "x%x\n",
5000                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
5001
5002                         /* Cleanup any outstanding ELS commands */
5003                         lpfc_els_flush_cmd(vport);
5004
5005                         lpfc_els_flush_rscn(vport);
5006                         lpfc_disc_flush_list(vport);
5007                 }
5008                 break;
5009
5010         default:
5011                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5012                                  "0273 Unexpected discovery timeout, "
5013                                  "vport State x%x\n", vport->port_state);
5014                 break;
5015         }
5016
5017         switch (phba->link_state) {
5018         case LPFC_CLEAR_LA:
5019                                 /* CLEAR LA timeout */
5020                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5021                                  "0228 CLEAR LA timeout\n");
5022                 clrlaerr = 1;
5023                 break;
5024
5025         case LPFC_LINK_UP:
5026                 lpfc_issue_clear_la(phba, vport);
5027                 /* Drop thru */
5028         case LPFC_LINK_UNKNOWN:
5029         case LPFC_WARM_START:
5030         case LPFC_INIT_START:
5031         case LPFC_INIT_MBX_CMDS:
5032         case LPFC_LINK_DOWN:
5033         case LPFC_HBA_ERROR:
5034                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5035                                  "0230 Unexpected timeout, hba link "
5036                                  "state x%x\n", phba->link_state);
5037                 clrlaerr = 1;
5038                 break;
5039
5040         case LPFC_HBA_READY:
5041                 break;
5042         }
5043
5044         if (clrlaerr) {
5045                 lpfc_disc_flush_list(vport);
5046                 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
5047                 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
5048                 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
5049                 vport->port_state = LPFC_VPORT_READY;
5050         }
5051
5052         return;
5053 }
5054
5055 /*
5056  * This routine handles processing a NameServer REG_LOGIN mailbox
5057  * command upon completion. It is setup in the LPFC_MBOXQ
5058  * as the completion routine when the command is
5059  * handed off to the SLI layer.
5060  */
5061 void
5062 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5063 {
5064         MAILBOX_t *mb = &pmb->u.mb;
5065         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
5066         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
5067         struct lpfc_vport    *vport = pmb->vport;
5068
5069         pmb->context1 = NULL;
5070         pmb->context2 = NULL;
5071
5072         ndlp->nlp_rpi = mb->un.varWords[0];
5073         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
5074         ndlp->nlp_type |= NLP_FABRIC;
5075         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
5076
5077         /*
5078          * Start issuing Fabric-Device Management Interface (FDMI) command to
5079          * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
5080          * fdmi-on=2 (supporting RPA/hostnmae)
5081          */
5082
5083         if (vport->cfg_fdmi_on == 1)
5084                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
5085         else
5086                 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
5087
5088         /* decrement the node reference count held for this callback
5089          * function.
5090          */
5091         lpfc_nlp_put(ndlp);
5092         lpfc_mbuf_free(phba, mp->virt, mp->phys);
5093         kfree(mp);
5094         mempool_free(pmb, phba->mbox_mem_pool);
5095
5096         return;
5097 }
5098
5099 static int
5100 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
5101 {
5102         uint16_t *rpi = param;
5103
5104         return ndlp->nlp_rpi == *rpi;
5105 }
5106
5107 static int
5108 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
5109 {
5110         return memcmp(&ndlp->nlp_portname, param,
5111                       sizeof(ndlp->nlp_portname)) == 0;
5112 }
5113
5114 static struct lpfc_nodelist *
5115 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
5116 {
5117         struct lpfc_nodelist *ndlp;
5118
5119         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5120                 if (filter(ndlp, param))
5121                         return ndlp;
5122         }
5123         return NULL;
5124 }
5125
5126 /*
5127  * This routine looks up the ndlp lists for the given RPI. If rpi found it
5128  * returns the node list element pointer else return NULL.
5129  */
5130 struct lpfc_nodelist *
5131 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
5132 {
5133         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
5134 }
5135
5136 /*
5137  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
5138  * returns the node element list pointer else return NULL.
5139  */
5140 struct lpfc_nodelist *
5141 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
5142 {
5143         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5144         struct lpfc_nodelist *ndlp;
5145
5146         spin_lock_irq(shost->host_lock);
5147         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
5148         spin_unlock_irq(shost->host_lock);
5149         return ndlp;
5150 }
5151
5152 void
5153 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
5154               uint32_t did)
5155 {
5156         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
5157
5158         lpfc_initialize_node(vport, ndlp, did);
5159         INIT_LIST_HEAD(&ndlp->nlp_listp);
5160
5161         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
5162                 "node init:       did:x%x",
5163                 ndlp->nlp_DID, 0, 0);
5164
5165         return;
5166 }
5167
5168 /* This routine releases all resources associated with a specifc NPort's ndlp
5169  * and mempool_free's the nodelist.
5170  */
5171 static void
5172 lpfc_nlp_release(struct kref *kref)
5173 {
5174         struct lpfc_hba *phba;
5175         unsigned long flags;
5176         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
5177                                                   kref);
5178
5179         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5180                 "node release:    did:x%x flg:x%x type:x%x",
5181                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
5182
5183         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
5184                         "0279 lpfc_nlp_release: ndlp:x%p "
5185                         "usgmap:x%x refcnt:%d\n",
5186                         (void *)ndlp, ndlp->nlp_usg_map,
5187                         atomic_read(&ndlp->kref.refcount));
5188
5189         /* remove ndlp from action. */
5190         lpfc_nlp_remove(ndlp->vport, ndlp);
5191
5192         /* clear the ndlp active flag for all release cases */
5193         phba = ndlp->phba;
5194         spin_lock_irqsave(&phba->ndlp_lock, flags);
5195         NLP_CLR_NODE_ACT(ndlp);
5196         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5197         if (phba->sli_rev == LPFC_SLI_REV4)
5198                 lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi);
5199
5200         /* free ndlp memory for final ndlp release */
5201         if (NLP_CHK_FREE_REQ(ndlp)) {
5202                 kfree(ndlp->lat_data);
5203                 mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
5204         }
5205 }
5206
5207 /* This routine bumps the reference count for a ndlp structure to ensure
5208  * that one discovery thread won't free a ndlp while another discovery thread
5209  * is using it.
5210  */
5211 struct lpfc_nodelist *
5212 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
5213 {
5214         struct lpfc_hba *phba;
5215         unsigned long flags;
5216
5217         if (ndlp) {
5218                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5219                         "node get:        did:x%x flg:x%x refcnt:x%x",
5220                         ndlp->nlp_DID, ndlp->nlp_flag,
5221                         atomic_read(&ndlp->kref.refcount));
5222                 /* The check of ndlp usage to prevent incrementing the
5223                  * ndlp reference count that is in the process of being
5224                  * released.
5225                  */
5226                 phba = ndlp->phba;
5227                 spin_lock_irqsave(&phba->ndlp_lock, flags);
5228                 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
5229                         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5230                         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
5231                                 "0276 lpfc_nlp_get: ndlp:x%p "
5232                                 "usgmap:x%x refcnt:%d\n",
5233                                 (void *)ndlp, ndlp->nlp_usg_map,
5234                                 atomic_read(&ndlp->kref.refcount));
5235                         return NULL;
5236                 } else
5237                         kref_get(&ndlp->kref);
5238                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5239         }
5240         return ndlp;
5241 }
5242
5243 /* This routine decrements the reference count for a ndlp structure. If the
5244  * count goes to 0, this indicates the the associated nodelist should be
5245  * freed. Returning 1 indicates the ndlp resource has been released; on the
5246  * other hand, returning 0 indicates the ndlp resource has not been released
5247  * yet.
5248  */
5249 int
5250 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
5251 {
5252         struct lpfc_hba *phba;
5253         unsigned long flags;
5254
5255         if (!ndlp)
5256                 return 1;
5257
5258         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5259         "node put:        did:x%x flg:x%x refcnt:x%x",
5260                 ndlp->nlp_DID, ndlp->nlp_flag,
5261                 atomic_read(&ndlp->kref.refcount));
5262         phba = ndlp->phba;
5263         spin_lock_irqsave(&phba->ndlp_lock, flags);
5264         /* Check the ndlp memory free acknowledge flag to avoid the
5265          * possible race condition that kref_put got invoked again
5266          * after previous one has done ndlp memory free.
5267          */
5268         if (NLP_CHK_FREE_ACK(ndlp)) {
5269                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5270                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
5271                                 "0274 lpfc_nlp_put: ndlp:x%p "
5272                                 "usgmap:x%x refcnt:%d\n",
5273                                 (void *)ndlp, ndlp->nlp_usg_map,
5274                                 atomic_read(&ndlp->kref.refcount));
5275                 return 1;
5276         }
5277         /* Check the ndlp inactivate log flag to avoid the possible
5278          * race condition that kref_put got invoked again after ndlp
5279          * is already in inactivating state.
5280          */
5281         if (NLP_CHK_IACT_REQ(ndlp)) {
5282                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5283                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
5284                                 "0275 lpfc_nlp_put: ndlp:x%p "
5285                                 "usgmap:x%x refcnt:%d\n",
5286                                 (void *)ndlp, ndlp->nlp_usg_map,
5287                                 atomic_read(&ndlp->kref.refcount));
5288                 return 1;
5289         }
5290         /* For last put, mark the ndlp usage flags to make sure no
5291          * other kref_get and kref_put on the same ndlp shall get
5292          * in between the process when the final kref_put has been
5293          * invoked on this ndlp.
5294          */
5295         if (atomic_read(&ndlp->kref.refcount) == 1) {
5296                 /* Indicate ndlp is put to inactive state. */
5297                 NLP_SET_IACT_REQ(ndlp);
5298                 /* Acknowledge ndlp memory free has been seen. */
5299                 if (NLP_CHK_FREE_REQ(ndlp))
5300                         NLP_SET_FREE_ACK(ndlp);
5301         }
5302         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5303         /* Note, the kref_put returns 1 when decrementing a reference
5304          * count that was 1, it invokes the release callback function,
5305          * but it still left the reference count as 1 (not actually
5306          * performs the last decrementation). Otherwise, it actually
5307          * decrements the reference count and returns 0.
5308          */
5309         return kref_put(&ndlp->kref, lpfc_nlp_release);
5310 }
5311
5312 /* This routine free's the specified nodelist if it is not in use
5313  * by any other discovery thread. This routine returns 1 if the
5314  * ndlp has been freed. A return value of 0 indicates the ndlp is
5315  * not yet been released.
5316  */
5317 int
5318 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
5319 {
5320         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5321                 "node not used:   did:x%x flg:x%x refcnt:x%x",
5322                 ndlp->nlp_DID, ndlp->nlp_flag,
5323                 atomic_read(&ndlp->kref.refcount));
5324         if (atomic_read(&ndlp->kref.refcount) == 1)
5325                 if (lpfc_nlp_put(ndlp))
5326                         return 1;
5327         return 0;
5328 }
5329
5330 /**
5331  * lpfc_fcf_inuse - Check if FCF can be unregistered.
5332  * @phba: Pointer to hba context object.
5333  *
5334  * This function iterate through all FC nodes associated
5335  * will all vports to check if there is any node with
5336  * fc_rports associated with it. If there is an fc_rport
5337  * associated with the node, then the node is either in
5338  * discovered state or its devloss_timer is pending.
5339  */
5340 static int
5341 lpfc_fcf_inuse(struct lpfc_hba *phba)
5342 {
5343         struct lpfc_vport **vports;
5344         int i, ret = 0;
5345         struct lpfc_nodelist *ndlp;
5346         struct Scsi_Host  *shost;
5347
5348         vports = lpfc_create_vport_work_array(phba);
5349
5350         /* If driver cannot allocate memory, indicate fcf is in use */
5351         if (!vports)
5352                 return 1;
5353
5354         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5355                 shost = lpfc_shost_from_vport(vports[i]);
5356                 spin_lock_irq(shost->host_lock);
5357                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
5358                         if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport &&
5359                           (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
5360                                 ret = 1;
5361                                 spin_unlock_irq(shost->host_lock);
5362                                 goto out;
5363                         } else {
5364                                 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
5365                                         "2624 RPI %x DID %x flg %x still "
5366                                         "logged in\n",
5367                                         ndlp->nlp_rpi, ndlp->nlp_DID,
5368                                         ndlp->nlp_flag);
5369                                 if (ndlp->nlp_flag & NLP_RPI_REGISTERED)
5370                                         ret = 1;
5371                         }
5372                 }
5373                 spin_unlock_irq(shost->host_lock);
5374         }
5375 out:
5376         lpfc_destroy_vport_work_array(phba, vports);
5377         return ret;
5378 }
5379
5380 /**
5381  * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
5382  * @phba: Pointer to hba context object.
5383  * @mboxq: Pointer to mailbox object.
5384  *
5385  * This function frees memory associated with the mailbox command.
5386  */
5387 static void
5388 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
5389 {
5390         struct lpfc_vport *vport = mboxq->vport;
5391         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5392
5393         if (mboxq->u.mb.mbxStatus) {
5394                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5395                         "2555 UNREG_VFI mbxStatus error x%x "
5396                         "HBA state x%x\n",
5397                         mboxq->u.mb.mbxStatus, vport->port_state);
5398         }
5399         spin_lock_irq(shost->host_lock);
5400         phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
5401         spin_unlock_irq(shost->host_lock);
5402         mempool_free(mboxq, phba->mbox_mem_pool);
5403         return;
5404 }
5405
5406 /**
5407  * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
5408  * @phba: Pointer to hba context object.
5409  * @mboxq: Pointer to mailbox object.
5410  *
5411  * This function frees memory associated with the mailbox command.
5412  */
5413 static void
5414 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
5415 {
5416         struct lpfc_vport *vport = mboxq->vport;
5417
5418         if (mboxq->u.mb.mbxStatus) {
5419                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5420                         "2550 UNREG_FCFI mbxStatus error x%x "
5421                         "HBA state x%x\n",
5422                         mboxq->u.mb.mbxStatus, vport->port_state);
5423         }
5424         mempool_free(mboxq, phba->mbox_mem_pool);
5425         return;
5426 }
5427
5428 /**
5429  * lpfc_unregister_fcf_prep - Unregister fcf record preparation
5430  * @phba: Pointer to hba context object.
5431  *
5432  * This function prepare the HBA for unregistering the currently registered
5433  * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
5434  * VFIs.
5435  */
5436 int
5437 lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
5438 {
5439         LPFC_MBOXQ_t *mbox;
5440         struct lpfc_vport **vports;
5441         struct lpfc_nodelist *ndlp;
5442         struct Scsi_Host *shost;
5443         int i, rc;
5444
5445         /* Unregister RPIs */
5446         if (lpfc_fcf_inuse(phba))
5447                 lpfc_unreg_hba_rpis(phba);
5448
5449         /* At this point, all discovery is aborted */
5450         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
5451
5452         /* Unregister VPIs */
5453         vports = lpfc_create_vport_work_array(phba);
5454         if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
5455                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5456                         /* Stop FLOGI/FDISC retries */
5457                         ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
5458                         if (ndlp)
5459                                 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
5460                         lpfc_cleanup_pending_mbox(vports[i]);
5461                         if (phba->sli_rev == LPFC_SLI_REV4)
5462                                 lpfc_sli4_unreg_all_rpis(vports[i]);
5463                         lpfc_mbx_unreg_vpi(vports[i]);
5464                         shost = lpfc_shost_from_vport(vports[i]);
5465                         spin_lock_irq(shost->host_lock);
5466                         vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
5467                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
5468                         spin_unlock_irq(shost->host_lock);
5469                 }
5470         lpfc_destroy_vport_work_array(phba, vports);
5471
5472         /* Cleanup any outstanding ELS commands */
5473         lpfc_els_flush_all_cmd(phba);
5474
5475         /* Unregister VFI */
5476         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5477         if (!mbox) {
5478                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5479                                 "2556 UNREG_VFI mbox allocation failed"
5480                                 "HBA state x%x\n", phba->pport->port_state);
5481                 return -ENOMEM;
5482         }
5483
5484         lpfc_unreg_vfi(mbox, phba->pport);
5485         mbox->vport = phba->pport;
5486         mbox->mbox_cmpl = lpfc_unregister_vfi_cmpl;
5487
5488         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5489         if (rc == MBX_NOT_FINISHED) {
5490                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5491                                 "2557 UNREG_VFI issue mbox failed rc x%x "
5492                                 "HBA state x%x\n",
5493                                 rc, phba->pport->port_state);
5494                 mempool_free(mbox, phba->mbox_mem_pool);
5495                 return -EIO;
5496         }
5497
5498         shost = lpfc_shost_from_vport(phba->pport);
5499         spin_lock_irq(shost->host_lock);
5500         phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
5501         spin_unlock_irq(shost->host_lock);
5502
5503         return 0;
5504 }
5505
5506 /**
5507  * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
5508  * @phba: Pointer to hba context object.
5509  *
5510  * This function issues synchronous unregister FCF mailbox command to HBA to
5511  * unregister the currently registered FCF record. The driver does not reset
5512  * the driver FCF usage state flags.
5513  *
5514  * Return 0 if successfully issued, none-zero otherwise.
5515  */
5516 int
5517 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
5518 {
5519         LPFC_MBOXQ_t *mbox;
5520         int rc;
5521
5522         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5523         if (!mbox) {
5524                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5525                                 "2551 UNREG_FCFI mbox allocation failed"
5526                                 "HBA state x%x\n", phba->pport->port_state);
5527                 return -ENOMEM;
5528         }
5529         lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
5530         mbox->vport = phba->pport;
5531         mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
5532         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5533
5534         if (rc == MBX_NOT_FINISHED) {
5535                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5536                                 "2552 Unregister FCFI command failed rc x%x "
5537                                 "HBA state x%x\n",
5538                                 rc, phba->pport->port_state);
5539                 return -EINVAL;
5540         }
5541         return 0;
5542 }
5543
5544 /**
5545  * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
5546  * @phba: Pointer to hba context object.
5547  *
5548  * This function unregisters the currently reigstered FCF. This function
5549  * also tries to find another FCF for discovery by rescan the HBA FCF table.
5550  */
5551 void
5552 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
5553 {
5554         int rc;
5555
5556         /* Preparation for unregistering fcf */
5557         rc = lpfc_unregister_fcf_prep(phba);
5558         if (rc) {
5559                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
5560                                 "2748 Failed to prepare for unregistering "
5561                                 "HBA's FCF record: rc=%d\n", rc);
5562                 return;
5563         }
5564
5565         /* Now, unregister FCF record and reset HBA FCF state */
5566         rc = lpfc_sli4_unregister_fcf(phba);
5567         if (rc)
5568                 return;
5569         /* Reset HBA FCF states after successful unregister FCF */
5570         phba->fcf.fcf_flag = 0;
5571         phba->fcf.current_rec.flag = 0;
5572
5573         /*
5574          * If driver is not unloading, check if there is any other
5575          * FCF record that can be used for discovery.
5576          */
5577         if ((phba->pport->load_flag & FC_UNLOADING) ||
5578             (phba->link_state < LPFC_LINK_UP))
5579                 return;
5580
5581         /* This is considered as the initial FCF discovery scan */
5582         spin_lock_irq(&phba->hbalock);
5583         phba->fcf.fcf_flag |= FCF_INIT_DISC;
5584         spin_unlock_irq(&phba->hbalock);
5585
5586         /* Reset FCF roundrobin bmask for new discovery */
5587         memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask));
5588
5589         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
5590
5591         if (rc) {
5592                 spin_lock_irq(&phba->hbalock);
5593                 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
5594                 spin_unlock_irq(&phba->hbalock);
5595                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5596                                 "2553 lpfc_unregister_unused_fcf failed "
5597                                 "to read FCF record HBA state x%x\n",
5598                                 phba->pport->port_state);
5599         }
5600 }
5601
5602 /**
5603  * lpfc_unregister_fcf - Unregister the currently registered fcf record
5604  * @phba: Pointer to hba context object.
5605  *
5606  * This function just unregisters the currently reigstered FCF. It does not
5607  * try to find another FCF for discovery.
5608  */
5609 void
5610 lpfc_unregister_fcf(struct lpfc_hba *phba)
5611 {
5612         int rc;
5613
5614         /* Preparation for unregistering fcf */
5615         rc = lpfc_unregister_fcf_prep(phba);
5616         if (rc) {
5617                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
5618                                 "2749 Failed to prepare for unregistering "
5619                                 "HBA's FCF record: rc=%d\n", rc);
5620                 return;
5621         }
5622
5623         /* Now, unregister FCF record and reset HBA FCF state */
5624         rc = lpfc_sli4_unregister_fcf(phba);
5625         if (rc)
5626                 return;
5627         /* Set proper HBA FCF states after successful unregister FCF */
5628         spin_lock_irq(&phba->hbalock);
5629         phba->fcf.fcf_flag &= ~FCF_REGISTERED;
5630         spin_unlock_irq(&phba->hbalock);
5631 }
5632
5633 /**
5634  * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
5635  * @phba: Pointer to hba context object.
5636  *
5637  * This function check if there are any connected remote port for the FCF and
5638  * if all the devices are disconnected, this function unregister FCFI.
5639  * This function also tries to use another FCF for discovery.
5640  */
5641 void
5642 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
5643 {
5644         /*
5645          * If HBA is not running in FIP mode, if HBA does not support
5646          * FCoE, if FCF discovery is ongoing, or if FCF has not been
5647          * registered, do nothing.
5648          */
5649         spin_lock_irq(&phba->hbalock);
5650         if (!(phba->hba_flag & HBA_FCOE_MODE) ||
5651             !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
5652             !(phba->hba_flag & HBA_FIP_SUPPORT) ||
5653             (phba->fcf.fcf_flag & FCF_DISCOVERY) ||
5654             (phba->pport->port_state == LPFC_FLOGI)) {
5655                 spin_unlock_irq(&phba->hbalock);
5656                 return;
5657         }
5658         spin_unlock_irq(&phba->hbalock);
5659
5660         if (lpfc_fcf_inuse(phba))
5661                 return;
5662
5663         lpfc_unregister_fcf_rescan(phba);
5664 }
5665
5666 /**
5667  * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
5668  * @phba: Pointer to hba context object.
5669  * @buff: Buffer containing the FCF connection table as in the config
5670  *         region.
5671  * This function create driver data structure for the FCF connection
5672  * record table read from config region 23.
5673  */
5674 static void
5675 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
5676         uint8_t *buff)
5677 {
5678         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
5679         struct lpfc_fcf_conn_hdr *conn_hdr;
5680         struct lpfc_fcf_conn_rec *conn_rec;
5681         uint32_t record_count;
5682         int i;
5683
5684         /* Free the current connect table */
5685         list_for_each_entry_safe(conn_entry, next_conn_entry,
5686                 &phba->fcf_conn_rec_list, list) {
5687                 list_del_init(&conn_entry->list);
5688                 kfree(conn_entry);
5689         }
5690
5691         conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
5692         record_count = conn_hdr->length * sizeof(uint32_t)/
5693                 sizeof(struct lpfc_fcf_conn_rec);
5694
5695         conn_rec = (struct lpfc_fcf_conn_rec *)
5696                 (buff + sizeof(struct lpfc_fcf_conn_hdr));
5697
5698         for (i = 0; i < record_count; i++) {
5699                 if (!(conn_rec[i].flags & FCFCNCT_VALID))
5700                         continue;
5701                 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
5702                         GFP_KERNEL);
5703                 if (!conn_entry) {
5704                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5705                                 "2566 Failed to allocate connection"
5706                                 " table entry\n");
5707                         return;
5708                 }
5709
5710                 memcpy(&conn_entry->conn_rec, &conn_rec[i],
5711                         sizeof(struct lpfc_fcf_conn_rec));
5712                 conn_entry->conn_rec.vlan_tag =
5713                         le16_to_cpu(conn_entry->conn_rec.vlan_tag) & 0xFFF;
5714                 conn_entry->conn_rec.flags =
5715                         le16_to_cpu(conn_entry->conn_rec.flags);
5716                 list_add_tail(&conn_entry->list,
5717                         &phba->fcf_conn_rec_list);
5718         }
5719 }
5720
5721 /**
5722  * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
5723  * @phba: Pointer to hba context object.
5724  * @buff: Buffer containing the FCoE parameter data structure.
5725  *
5726  *  This function update driver data structure with config
5727  *  parameters read from config region 23.
5728  */
5729 static void
5730 lpfc_read_fcoe_param(struct lpfc_hba *phba,
5731                         uint8_t *buff)
5732 {
5733         struct lpfc_fip_param_hdr *fcoe_param_hdr;
5734         struct lpfc_fcoe_params *fcoe_param;
5735
5736         fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
5737                 buff;
5738         fcoe_param = (struct lpfc_fcoe_params *)
5739                 (buff + sizeof(struct lpfc_fip_param_hdr));
5740
5741         if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
5742                 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
5743                 return;
5744
5745         if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
5746                 phba->valid_vlan = 1;
5747                 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
5748                         0xFFF;
5749         }
5750
5751         phba->fc_map[0] = fcoe_param->fc_map[0];
5752         phba->fc_map[1] = fcoe_param->fc_map[1];
5753         phba->fc_map[2] = fcoe_param->fc_map[2];
5754         return;
5755 }
5756
5757 /**
5758  * lpfc_get_rec_conf23 - Get a record type in config region data.
5759  * @buff: Buffer containing config region 23 data.
5760  * @size: Size of the data buffer.
5761  * @rec_type: Record type to be searched.
5762  *
5763  * This function searches config region data to find the beginning
5764  * of the record specified by record_type. If record found, this
5765  * function return pointer to the record else return NULL.
5766  */
5767 static uint8_t *
5768 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
5769 {
5770         uint32_t offset = 0, rec_length;
5771
5772         if ((buff[0] == LPFC_REGION23_LAST_REC) ||
5773                 (size < sizeof(uint32_t)))
5774                 return NULL;
5775
5776         rec_length = buff[offset + 1];
5777
5778         /*
5779          * One TLV record has one word header and number of data words
5780          * specified in the rec_length field of the record header.
5781          */
5782         while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
5783                 <= size) {
5784                 if (buff[offset] == rec_type)
5785                         return &buff[offset];
5786
5787                 if (buff[offset] == LPFC_REGION23_LAST_REC)
5788                         return NULL;
5789
5790                 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
5791                 rec_length = buff[offset + 1];
5792         }
5793         return NULL;
5794 }
5795
5796 /**
5797  * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
5798  * @phba: Pointer to lpfc_hba data structure.
5799  * @buff: Buffer containing config region 23 data.
5800  * @size: Size of the data buffer.
5801  *
5802  * This function parses the FCoE config parameters in config region 23 and
5803  * populate driver data structure with the parameters.
5804  */
5805 void
5806 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
5807                 uint8_t *buff,
5808                 uint32_t size)
5809 {
5810         uint32_t offset = 0, rec_length;
5811         uint8_t *rec_ptr;
5812
5813         /*
5814          * If data size is less than 2 words signature and version cannot be
5815          * verified.
5816          */
5817         if (size < 2*sizeof(uint32_t))
5818                 return;
5819
5820         /* Check the region signature first */
5821         if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
5822                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5823                         "2567 Config region 23 has bad signature\n");
5824                 return;
5825         }
5826
5827         offset += 4;
5828
5829         /* Check the data structure version */
5830         if (buff[offset] != LPFC_REGION23_VERSION) {
5831                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5832                         "2568 Config region 23 has bad version\n");
5833                 return;
5834         }
5835         offset += 4;
5836
5837         rec_length = buff[offset + 1];
5838
5839         /* Read FCoE param record */
5840         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
5841                         size - offset, FCOE_PARAM_TYPE);
5842         if (rec_ptr)
5843                 lpfc_read_fcoe_param(phba, rec_ptr);
5844
5845         /* Read FCF connection table */
5846         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
5847                 size - offset, FCOE_CONN_TBL_TYPE);
5848         if (rec_ptr)
5849                 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
5850
5851 }