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) 2004-2014 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         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 127                          "3181 dev_loss_callbk x%06x, rport %p flg x%x\n",
 128                          ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag);
 129
 130         /* Don't defer this if we are in the process of deleting the vport
 131          * or unloading the driver. The unload will cleanup the node
 132          * appropriately we just need to cleanup the ndlp rport info here.
 133          */
 134         if (vport->load_flag & FC_UNLOADING) {
 135                 put_node = rdata->pnode != NULL;
 136                 put_rport = ndlp->rport != NULL;
 137                 rdata->pnode = NULL;
 138                 ndlp->rport = NULL;
 139                 if (put_node)
 140                         lpfc_nlp_put(ndlp);
 141                 if (put_rport)
 142                         put_device(&rport->dev);
 143                 return;
 144         }
 145
 146         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 147                 return;
 148
 149         if (ndlp->nlp_type & NLP_FABRIC) {
 150
 151                 /* If the WWPN of the rport and ndlp don't match, ignore it */
 152                 if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn)) {
 153                         put_device(&rport->dev);
 154                         return;
 155                 }
 156         }
 157
 158         evtp = &ndlp->dev_loss_evt;
 159
 160         if (!list_empty(&evtp->evt_listp))
 161                 return;
 162
 163         evtp->evt_arg1  = lpfc_nlp_get(ndlp);
 164
 165         spin_lock_irq(&phba->hbalock);
 166         /* We need to hold the node by incrementing the reference
 167          * count until this queued work is done
 168          */
 169         if (evtp->evt_arg1) {
 170                 evtp->evt = LPFC_EVT_DEV_LOSS;
 171                 list_add_tail(&evtp->evt_listp, &phba->work_list);
 172                 lpfc_worker_wake_up(phba);
 173         }
 174         spin_unlock_irq(&phba->hbalock);
 175
 176         return;
 177 }
 178
 179 /**
 180  * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler
 181  * @ndlp: Pointer to remote node object.
 182  *
 183  * This function is called from the worker thread when devloss timeout timer
 184  * expires. For SLI4 host, this routine shall return 1 when at lease one
 185  * remote node, including this @ndlp, is still in use of FCF; otherwise, this
 186  * routine shall return 0 when there is no remote node is still in use of FCF
 187  * when devloss timeout happened to this @ndlp.
 188  **/
 189 static int
 190 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 191 {
 192         struct lpfc_rport_data *rdata;
 193         struct fc_rport   *rport;
 194         struct lpfc_vport *vport;
 195         struct lpfc_hba   *phba;
 196         uint8_t *name;
 197         int  put_node;
 198         int  put_rport;
 199         int warn_on = 0;
 200         int fcf_inuse = 0;
 201
 202         rport = ndlp->rport;
 203
 204         if (!rport)
 205                 return fcf_inuse;
 206
 207         rdata = rport->dd_data;
 208         name = (uint8_t *) &ndlp->nlp_portname;
 209         vport = ndlp->vport;
 210         phba  = vport->phba;
 211
 212         if (phba->sli_rev == LPFC_SLI_REV4)
 213                 fcf_inuse = lpfc_fcf_inuse(phba);
 214
 215         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 216                 "rport devlosstmo:did:x%x type:x%x id:x%x",
 217                 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
 218
 219         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 220                          "3182 dev_loss_tmo_handler x%06x, rport %p flg x%x\n",
 221                          ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag);
 222
 223         /* Don't defer this if we are in the process of deleting the vport
 224          * or unloading the driver. The unload will cleanup the node
 225          * appropriately we just need to cleanup the ndlp rport info here.
 226          */
 227         if (vport->load_flag & FC_UNLOADING) {
 228                 if (ndlp->nlp_sid != NLP_NO_SID) {
 229                         /* flush the target */
 230                         lpfc_sli_abort_iocb(vport,
 231                                         &phba->sli.ring[phba->sli.fcp_ring],
 232                                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 233                 }
 234                 put_node = rdata->pnode != NULL;
 235                 put_rport = ndlp->rport != NULL;
 236                 rdata->pnode = NULL;
 237                 ndlp->rport = NULL;
 238                 if (put_node)
 239                         lpfc_nlp_put(ndlp);
 240                 if (put_rport)
 241                         put_device(&rport->dev);
 242                 return fcf_inuse;
 243         }
 244
 245         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
 246                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 247                                  "0284 Devloss timeout Ignored on "
 248                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 249                                  "NPort x%x\n",
 250                                  *name, *(name+1), *(name+2), *(name+3),
 251                                  *(name+4), *(name+5), *(name+6), *(name+7),
 252                                  ndlp->nlp_DID);
 253                 return fcf_inuse;
 254         }
 255
 256         if (ndlp->nlp_type & NLP_FABRIC) {
 257                 /* We will clean up these Nodes in linkup */
 258                 put_node = rdata->pnode != NULL;
 259                 put_rport = ndlp->rport != NULL;
 260                 rdata->pnode = NULL;
 261                 ndlp->rport = NULL;
 262                 if (put_node)
 263                         lpfc_nlp_put(ndlp);
 264                 if (put_rport)
 265                         put_device(&rport->dev);
 266                 return fcf_inuse;
 267         }
 268
 269         if (ndlp->nlp_sid != NLP_NO_SID) {
 270                 warn_on = 1;
 271                 /* flush the target */
 272                 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
 273                                     ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 274         }
 275
 276         if (warn_on) {
 277                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 278                                  "0203 Devloss timeout on "
 279                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 280                                  "NPort x%06x Data: x%x x%x x%x\n",
 281                                  *name, *(name+1), *(name+2), *(name+3),
 282                                  *(name+4), *(name+5), *(name+6), *(name+7),
 283                                  ndlp->nlp_DID, ndlp->nlp_flag,
 284                                  ndlp->nlp_state, ndlp->nlp_rpi);
 285         } else {
 286                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 287                                  "0204 Devloss timeout on "
 288                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 289                                  "NPort x%06x Data: x%x x%x x%x\n",
 290                                  *name, *(name+1), *(name+2), *(name+3),
 291                                  *(name+4), *(name+5), *(name+6), *(name+7),
 292                                  ndlp->nlp_DID, ndlp->nlp_flag,
 293                                  ndlp->nlp_state, ndlp->nlp_rpi);
 294         }
 295
 296         put_node = rdata->pnode != NULL;
 297         put_rport = ndlp->rport != NULL;
 298         rdata->pnode = NULL;
 299         ndlp->rport = NULL;
 300         if (put_node)
 301                 lpfc_nlp_put(ndlp);
 302         if (put_rport)
 303                 put_device(&rport->dev);
 304
 305         if (!(vport->load_flag & FC_UNLOADING) &&
 306             !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
 307             !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 308             (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
 309             (ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) &&
 310             (ndlp->nlp_state != NLP_STE_PRLI_ISSUE))
 311                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 312
 313         return fcf_inuse;
 314 }
 315
 316 /**
 317  * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler
 318  * @phba: Pointer to hba context object.
 319  * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler.
 320  * @nlp_did: remote node identifer with devloss timeout.
 321  *
 322  * This function is called from the worker thread after invoking devloss
 323  * timeout handler and releasing the reference count for the ndlp with
 324  * which the devloss timeout was handled for SLI4 host. For the devloss
 325  * timeout of the last remote node which had been in use of FCF, when this
 326  * routine is invoked, it shall be guaranteed that none of the remote are
 327  * in-use of FCF. When devloss timeout to the last remote using the FCF,
 328  * if the FIP engine is neither in FCF table scan process nor roundrobin
 329  * failover process, the in-use FCF shall be unregistered. If the FIP
 330  * engine is in FCF discovery process, the devloss timeout state shall
 331  * be set for either the FCF table scan process or roundrobin failover
 332  * process to unregister the in-use FCF.
 333  **/
 334 static void
 335 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse,
 336                                     uint32_t nlp_did)
 337 {
 338         /* If devloss timeout happened to a remote node when FCF had no
 339          * longer been in-use, do nothing.
 340          */
 341         if (!fcf_inuse)
 342                 return;
 343
 344         if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) {
 345                 spin_lock_irq(&phba->hbalock);
 346                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
 347                         if (phba->hba_flag & HBA_DEVLOSS_TMO) {
 348                                 spin_unlock_irq(&phba->hbalock);
 349                                 return;
 350                         }
 351                         phba->hba_flag |= HBA_DEVLOSS_TMO;
 352                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 353                                         "2847 Last remote node (x%x) using "
 354                                         "FCF devloss tmo\n", nlp_did);
 355                 }
 356                 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) {
 357                         spin_unlock_irq(&phba->hbalock);
 358                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 359                                         "2868 Devloss tmo to FCF rediscovery "
 360                                         "in progress\n");
 361                         return;
 362                 }
 363                 if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) {
 364                         spin_unlock_irq(&phba->hbalock);
 365                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 366                                         "2869 Devloss tmo to idle FIP engine, "
 367                                         "unreg in-use FCF and rescan.\n");
 368                         /* Unregister in-use FCF and rescan */
 369                         lpfc_unregister_fcf_rescan(phba);
 370                         return;
 371                 }
 372                 spin_unlock_irq(&phba->hbalock);
 373                 if (phba->hba_flag & FCF_TS_INPROG)
 374                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 375                                         "2870 FCF table scan in progress\n");
 376                 if (phba->hba_flag & FCF_RR_INPROG)
 377                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 378                                         "2871 FLOGI roundrobin FCF failover "
 379                                         "in progress\n");
 380         }
 381         lpfc_unregister_unused_fcf(phba);
 382 }
 383
 384 /**
 385  * lpfc_alloc_fast_evt - Allocates data structure for posting event
 386  * @phba: Pointer to hba context object.
 387  *
 388  * This function is called from the functions which need to post
 389  * events from interrupt context. This function allocates data
 390  * structure required for posting event. It also keeps track of
 391  * number of events pending and prevent event storm when there are
 392  * too many events.
 393  **/
 394 struct lpfc_fast_path_event *
 395 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
 396         struct lpfc_fast_path_event *ret;
 397
 398         /* If there are lot of fast event do not exhaust memory due to this */
 399         if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
 400                 return NULL;
 401
 402         ret = kzalloc(sizeof(struct lpfc_fast_path_event),
 403                         GFP_ATOMIC);
 404         if (ret) {
 405                 atomic_inc(&phba->fast_event_count);
 406                 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
 407                 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
 408         }
 409         return ret;
 410 }
 411
 412 /**
 413  * lpfc_free_fast_evt - Frees event data structure
 414  * @phba: Pointer to hba context object.
 415  * @evt:  Event object which need to be freed.
 416  *
 417  * This function frees the data structure required for posting
 418  * events.
 419  **/
 420 void
 421 lpfc_free_fast_evt(struct lpfc_hba *phba,
 422                 struct lpfc_fast_path_event *evt) {
 423
 424         atomic_dec(&phba->fast_event_count);
 425         kfree(evt);
 426 }
 427
 428 /**
 429  * lpfc_send_fastpath_evt - Posts events generated from fast path
 430  * @phba: Pointer to hba context object.
 431  * @evtp: Event data structure.
 432  *
 433  * This function is called from worker thread, when the interrupt
 434  * context need to post an event. This function posts the event
 435  * to fc transport netlink interface.
 436  **/
 437 static void
 438 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
 439                 struct lpfc_work_evt *evtp)
 440 {
 441         unsigned long evt_category, evt_sub_category;
 442         struct lpfc_fast_path_event *fast_evt_data;
 443         char *evt_data;
 444         uint32_t evt_data_size;
 445         struct Scsi_Host *shost;
 446
 447         fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
 448                 work_evt);
 449
 450         evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
 451         evt_sub_category = (unsigned long) fast_evt_data->un.
 452                         fabric_evt.subcategory;
 453         shost = lpfc_shost_from_vport(fast_evt_data->vport);
 454         if (evt_category == FC_REG_FABRIC_EVENT) {
 455                 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
 456                         evt_data = (char *) &fast_evt_data->un.read_check_error;
 457                         evt_data_size = sizeof(fast_evt_data->un.
 458                                 read_check_error);
 459                 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
 460                         (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
 461                         evt_data = (char *) &fast_evt_data->un.fabric_evt;
 462                         evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
 463                 } else {
 464                         lpfc_free_fast_evt(phba, fast_evt_data);
 465                         return;
 466                 }
 467         } else if (evt_category == FC_REG_SCSI_EVENT) {
 468                 switch (evt_sub_category) {
 469                 case LPFC_EVENT_QFULL:
 470                 case LPFC_EVENT_DEVBSY:
 471                         evt_data = (char *) &fast_evt_data->un.scsi_evt;
 472                         evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
 473                         break;
 474                 case LPFC_EVENT_CHECK_COND:
 475                         evt_data = (char *) &fast_evt_data->un.check_cond_evt;
 476                         evt_data_size =  sizeof(fast_evt_data->un.
 477                                 check_cond_evt);
 478                         break;
 479                 case LPFC_EVENT_VARQUEDEPTH:
 480                         evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
 481                         evt_data_size = sizeof(fast_evt_data->un.
 482                                 queue_depth_evt);
 483                         break;
 484                 default:
 485                         lpfc_free_fast_evt(phba, fast_evt_data);
 486                         return;
 487                 }
 488         } else {
 489                 lpfc_free_fast_evt(phba, fast_evt_data);
 490                 return;
 491         }
 492
 493         fc_host_post_vendor_event(shost,
 494                 fc_get_event_number(),
 495                 evt_data_size,
 496                 evt_data,
 497                 LPFC_NL_VENDOR_ID);
 498
 499         lpfc_free_fast_evt(phba, fast_evt_data);
 500         return;
 501 }
 502
 503 static void
 504 lpfc_work_list_done(struct lpfc_hba *phba)
 505 {
 506         struct lpfc_work_evt  *evtp = NULL;
 507         struct lpfc_nodelist  *ndlp;
 508         int free_evt;
 509         int fcf_inuse;
 510         uint32_t nlp_did;
 511
 512         spin_lock_irq(&phba->hbalock);
 513         while (!list_empty(&phba->work_list)) {
 514                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 515                                  evt_listp);
 516                 spin_unlock_irq(&phba->hbalock);
 517                 free_evt = 1;
 518                 switch (evtp->evt) {
 519                 case LPFC_EVT_ELS_RETRY:
 520                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 521                         lpfc_els_retry_delay_handler(ndlp);
 522                         free_evt = 0; /* evt is part of ndlp */
 523                         /* decrement the node reference count held
 524                          * for this queued work
 525                          */
 526                         lpfc_nlp_put(ndlp);
 527                         break;
 528                 case LPFC_EVT_DEV_LOSS:
 529                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 530                         fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp);
 531                         free_evt = 0;
 532                         /* decrement the node reference count held for
 533                          * this queued work
 534                          */
 535                         nlp_did = ndlp->nlp_DID;
 536                         lpfc_nlp_put(ndlp);
 537                         if (phba->sli_rev == LPFC_SLI_REV4)
 538                                 lpfc_sli4_post_dev_loss_tmo_handler(phba,
 539                                                                     fcf_inuse,
 540                                                                     nlp_did);
 541                         break;
 542                 case LPFC_EVT_ONLINE:
 543                         if (phba->link_state < LPFC_LINK_DOWN)
 544                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 545                         else
 546                                 *(int *) (evtp->evt_arg1) = 0;
 547                         complete((struct completion *)(evtp->evt_arg2));
 548                         break;
 549                 case LPFC_EVT_OFFLINE_PREP:
 550                         if (phba->link_state >= LPFC_LINK_DOWN)
 551                                 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
 552                         *(int *)(evtp->evt_arg1) = 0;
 553                         complete((struct completion *)(evtp->evt_arg2));
 554                         break;
 555                 case LPFC_EVT_OFFLINE:
 556                         lpfc_offline(phba);
 557                         lpfc_sli_brdrestart(phba);
 558                         *(int *)(evtp->evt_arg1) =
 559                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 560                         lpfc_unblock_mgmt_io(phba);
 561                         complete((struct completion *)(evtp->evt_arg2));
 562                         break;
 563                 case LPFC_EVT_WARM_START:
 564                         lpfc_offline(phba);
 565                         lpfc_reset_barrier(phba);
 566                         lpfc_sli_brdreset(phba);
 567                         lpfc_hba_down_post(phba);
 568                         *(int *)(evtp->evt_arg1) =
 569                                 lpfc_sli_brdready(phba, HS_MBRDY);
 570                         lpfc_unblock_mgmt_io(phba);
 571                         complete((struct completion *)(evtp->evt_arg2));
 572                         break;
 573                 case LPFC_EVT_KILL:
 574                         lpfc_offline(phba);
 575                         *(int *)(evtp->evt_arg1)
 576                                 = (phba->pport->stopped)
 577                                         ? 0 : lpfc_sli_brdkill(phba);
 578                         lpfc_unblock_mgmt_io(phba);
 579                         complete((struct completion *)(evtp->evt_arg2));
 580                         break;
 581                 case LPFC_EVT_FASTPATH_MGMT_EVT:
 582                         lpfc_send_fastpath_evt(phba, evtp);
 583                         free_evt = 0;
 584                         break;
 585                 case LPFC_EVT_RESET_HBA:
 586                         if (!(phba->pport->load_flag & FC_UNLOADING))
 587                                 lpfc_reset_hba(phba);
 588                         break;
 589                 }
 590                 if (free_evt)
 591                         kfree(evtp);
 592                 spin_lock_irq(&phba->hbalock);
 593         }
 594         spin_unlock_irq(&phba->hbalock);
 595
 596 }
 597
 598 static void
 599 lpfc_work_done(struct lpfc_hba *phba)
 600 {
 601         struct lpfc_sli_ring *pring;
 602         uint32_t ha_copy, status, control, work_port_events;
 603         struct lpfc_vport **vports;
 604         struct lpfc_vport *vport;
 605         int i;
 606
 607         spin_lock_irq(&phba->hbalock);
 608         ha_copy = phba->work_ha;
 609         phba->work_ha = 0;
 610         spin_unlock_irq(&phba->hbalock);
 611
 612         /* First, try to post the next mailbox command to SLI4 device */
 613         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
 614                 lpfc_sli4_post_async_mbox(phba);
 615
 616         if (ha_copy & HA_ERATT)
 617                 /* Handle the error attention event */
 618                 lpfc_handle_eratt(phba);
 619
 620         if (ha_copy & HA_MBATT)
 621                 lpfc_sli_handle_mb_event(phba);
 622
 623         if (ha_copy & HA_LATT)
 624                 lpfc_handle_latt(phba);
 625
 626         /* Process SLI4 events */
 627         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
 628                 if (phba->hba_flag & HBA_RRQ_ACTIVE)
 629                         lpfc_handle_rrq_active(phba);
 630                 if (phba->hba_flag & FCP_XRI_ABORT_EVENT)
 631                         lpfc_sli4_fcp_xri_abort_event_proc(phba);
 632                 if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
 633                         lpfc_sli4_els_xri_abort_event_proc(phba);
 634                 if (phba->hba_flag & ASYNC_EVENT)
 635                         lpfc_sli4_async_event_proc(phba);
 636                 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
 637                         spin_lock_irq(&phba->hbalock);
 638                         phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
 639                         spin_unlock_irq(&phba->hbalock);
 640                         lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
 641                 }
 642                 if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
 643                         lpfc_sli4_fcf_redisc_event_proc(phba);
 644         }
 645
 646         vports = lpfc_create_vport_work_array(phba);
 647         if (vports != NULL)
 648                 for (i = 0; i <= phba->max_vports; i++) {
 649                         /*
 650                          * We could have no vports in array if unloading, so if
 651                          * this happens then just use the pport
 652                          */
 653                         if (vports[i] == NULL && i == 0)
 654                                 vport = phba->pport;
 655                         else
 656                                 vport = vports[i];
 657                         if (vport == NULL)
 658                                 break;
 659                         spin_lock_irq(&vport->work_port_lock);
 660                         work_port_events = vport->work_port_events;
 661                         vport->work_port_events &= ~work_port_events;
 662                         spin_unlock_irq(&vport->work_port_lock);
 663                         if (work_port_events & WORKER_DISC_TMO)
 664                                 lpfc_disc_timeout_handler(vport);
 665                         if (work_port_events & WORKER_ELS_TMO)
 666                                 lpfc_els_timeout_handler(vport);
 667                         if (work_port_events & WORKER_HB_TMO)
 668                                 lpfc_hb_timeout_handler(phba);
 669                         if (work_port_events & WORKER_MBOX_TMO)
 670                                 lpfc_mbox_timeout_handler(phba);
 671                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
 672                                 lpfc_unblock_fabric_iocbs(phba);
 673                         if (work_port_events & WORKER_FDMI_TMO)
 674                                 lpfc_fdmi_timeout_handler(vport);
 675                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
 676                                 lpfc_ramp_down_queue_handler(phba);
 677                         if (work_port_events & WORKER_DELAYED_DISC_TMO)
 678                                 lpfc_delayed_disc_timeout_handler(vport);
 679                 }
 680         lpfc_destroy_vport_work_array(phba, vports);
 681
 682         pring = &phba->sli.ring[LPFC_ELS_RING];
 683         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
 684         status >>= (4*LPFC_ELS_RING);
 685         if ((status & HA_RXMASK) ||
 686             (pring->flag & LPFC_DEFERRED_RING_EVENT) ||
 687             (phba->hba_flag & HBA_SP_QUEUE_EVT)) {
 688                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
 689                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
 690                         /* Set the lpfc data pending flag */
 691                         set_bit(LPFC_DATA_READY, &phba->data_flags);
 692                 } else {
 693                         if (phba->link_state >= LPFC_LINK_UP) {
 694                                 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
 695                                 lpfc_sli_handle_slow_ring_event(phba, pring,
 696                                                                 (status &
 697                                                                 HA_RXMASK));
 698                         }
 699                 }
 700                 if ((phba->sli_rev == LPFC_SLI_REV4) &
 701                                  (!list_empty(&pring->txq)))
 702                         lpfc_drain_txq(phba);
 703                 /*
 704                  * Turn on Ring interrupts
 705                  */
 706                 if (phba->sli_rev <= LPFC_SLI_REV3) {
 707                         spin_lock_irq(&phba->hbalock);
 708                         control = readl(phba->HCregaddr);
 709                         if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
 710                                 lpfc_debugfs_slow_ring_trc(phba,
 711                                         "WRK Enable ring: cntl:x%x hacopy:x%x",
 712                                         control, ha_copy, 0);
 713
 714                                 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
 715                                 writel(control, phba->HCregaddr);
 716                                 readl(phba->HCregaddr); /* flush */
 717                         } else {
 718                                 lpfc_debugfs_slow_ring_trc(phba,
 719                                         "WRK Ring ok:     cntl:x%x hacopy:x%x",
 720                                         control, ha_copy, 0);
 721                         }
 722                         spin_unlock_irq(&phba->hbalock);
 723                 }
 724         }
 725         lpfc_work_list_done(phba);
 726 }
 727
 728 int
 729 lpfc_do_work(void *p)
 730 {
 731         struct lpfc_hba *phba = p;
 732         int rc;
 733
 734         set_user_nice(current, MIN_NICE);
 735         current->flags |= PF_NOFREEZE;
 736         phba->data_flags = 0;
 737
 738         while (!kthread_should_stop()) {
 739                 /* wait and check worker queue activities */
 740                 rc = wait_event_interruptible(phba->work_waitq,
 741                                         (test_and_clear_bit(LPFC_DATA_READY,
 742                                                             &phba->data_flags)
 743                                          || kthread_should_stop()));
 744                 /* Signal wakeup shall terminate the worker thread */
 745                 if (rc) {
 746                         lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
 747                                         "0433 Wakeup on signal: rc=x%x\n", rc);
 748                         break;
 749                 }
 750
 751                 /* Attend pending lpfc data processing */
 752                 lpfc_work_done(phba);
 753         }
 754         phba->worker_thread = NULL;
 755         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
 756                         "0432 Worker thread stopped.\n");
 757         return 0;
 758 }
 759
 760 /*
 761  * This is only called to handle FC worker events. Since this a rare
 762  * occurrence, we allocate a struct lpfc_work_evt structure here instead of
 763  * embedding it in the IOCB.
 764  */
 765 int
 766 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
 767                       uint32_t evt)
 768 {
 769         struct lpfc_work_evt  *evtp;
 770         unsigned long flags;
 771
 772         /*
 773          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
 774          * be queued to worker thread for processing
 775          */
 776         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
 777         if (!evtp)
 778                 return 0;
 779
 780         evtp->evt_arg1  = arg1;
 781         evtp->evt_arg2  = arg2;
 782         evtp->evt       = evt;
 783
 784         spin_lock_irqsave(&phba->hbalock, flags);
 785         list_add_tail(&evtp->evt_listp, &phba->work_list);
 786         spin_unlock_irqrestore(&phba->hbalock, flags);
 787
 788         lpfc_worker_wake_up(phba);
 789
 790         return 1;
 791 }
 792
 793 void
 794 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
 795 {
 796         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 797         struct lpfc_hba  *phba = vport->phba;
 798         struct lpfc_nodelist *ndlp, *next_ndlp;
 799         int  rc;
 800
 801         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
 802                 if (!NLP_CHK_NODE_ACT(ndlp))
 803                         continue;
 804                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 805                         continue;
 806                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
 807                         ((vport->port_type == LPFC_NPIV_PORT) &&
 808                         (ndlp->nlp_DID == NameServer_DID)))
 809                         lpfc_unreg_rpi(vport, ndlp);
 810
 811                 /* Leave Fabric nodes alone on link down */
 812                 if ((phba->sli_rev < LPFC_SLI_REV4) &&
 813                     (!remove && ndlp->nlp_type & NLP_FABRIC))
 814                         continue;
 815                 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
 816                                              remove
 817                                              ? NLP_EVT_DEVICE_RM
 818                                              : NLP_EVT_DEVICE_RECOVERY);
 819         }
 820         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
 821                 if (phba->sli_rev == LPFC_SLI_REV4)
 822                         lpfc_sli4_unreg_all_rpis(vport);
 823                 lpfc_mbx_unreg_vpi(vport);
 824                 spin_lock_irq(shost->host_lock);
 825                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
 826                 spin_unlock_irq(shost->host_lock);
 827         }
 828 }
 829
 830 void
 831 lpfc_port_link_failure(struct lpfc_vport *vport)
 832 {
 833         lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
 834
 835         /* Cleanup any outstanding received buffers */
 836         lpfc_cleanup_rcv_buffers(vport);
 837
 838         /* Cleanup any outstanding RSCN activity */
 839         lpfc_els_flush_rscn(vport);
 840
 841         /* Cleanup any outstanding ELS commands */
 842         lpfc_els_flush_cmd(vport);
 843
 844         lpfc_cleanup_rpis(vport, 0);
 845
 846         /* Turn off discovery timer if its running */
 847         lpfc_can_disctmo(vport);
 848 }
 849
 850 void
 851 lpfc_linkdown_port(struct lpfc_vport *vport)
 852 {
 853         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 854
 855         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
 856
 857         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 858                 "Link Down:       state:x%x rtry:x%x flg:x%x",
 859                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
 860
 861         lpfc_port_link_failure(vport);
 862
 863         /* Stop delayed Nport discovery */
 864         spin_lock_irq(shost->host_lock);
 865         vport->fc_flag &= ~FC_DISC_DELAYED;
 866         spin_unlock_irq(shost->host_lock);
 867         del_timer_sync(&vport->delayed_disc_tmo);
 868 }
 869
 870 int
 871 lpfc_linkdown(struct lpfc_hba *phba)
 872 {
 873         struct lpfc_vport *vport = phba->pport;
 874         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 875         struct lpfc_vport **vports;
 876         LPFC_MBOXQ_t          *mb;
 877         int i;
 878
 879         if (phba->link_state == LPFC_LINK_DOWN)
 880                 return 0;
 881
 882         /* Block all SCSI stack I/Os */
 883         lpfc_scsi_dev_block(phba);
 884
 885         spin_lock_irq(&phba->hbalock);
 886         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
 887         spin_unlock_irq(&phba->hbalock);
 888         if (phba->link_state > LPFC_LINK_DOWN) {
 889                 phba->link_state = LPFC_LINK_DOWN;
 890                 spin_lock_irq(shost->host_lock);
 891                 phba->pport->fc_flag &= ~FC_LBIT;
 892                 spin_unlock_irq(shost->host_lock);
 893         }
 894         vports = lpfc_create_vport_work_array(phba);
 895         if (vports != NULL)
 896                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
 897                         /* Issue a LINK DOWN event to all nodes */
 898                         lpfc_linkdown_port(vports[i]);
 899                 }
 900         lpfc_destroy_vport_work_array(phba, vports);
 901         /* Clean up any firmware default rpi's */
 902         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 903         if (mb) {
 904                 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb);
 905                 mb->vport = vport;
 906                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 907                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 908                     == MBX_NOT_FINISHED) {
 909                         mempool_free(mb, phba->mbox_mem_pool);
 910                 }
 911         }
 912
 913         /* Setup myDID for link up if we are in pt2pt mode */
 914         if (phba->pport->fc_flag & FC_PT2PT) {
 915                 phba->pport->fc_myDID = 0;
 916                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 917                 if (mb) {
 918                         lpfc_config_link(phba, mb);
 919                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 920                         mb->vport = vport;
 921                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 922                             == MBX_NOT_FINISHED) {
 923                                 mempool_free(mb, phba->mbox_mem_pool);
 924                         }
 925                 }
 926                 spin_lock_irq(shost->host_lock);
 927                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
 928                 spin_unlock_irq(shost->host_lock);
 929         }
 930
 931         return 0;
 932 }
 933
 934 static void
 935 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
 936 {
 937         struct lpfc_nodelist *ndlp;
 938
 939         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
 940                 if (!NLP_CHK_NODE_ACT(ndlp))
 941                         continue;
 942                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 943                         continue;
 944                 if (ndlp->nlp_type & NLP_FABRIC) {
 945                         /* On Linkup its safe to clean up the ndlp
 946                          * from Fabric connections.
 947                          */
 948                         if (ndlp->nlp_DID != Fabric_DID)
 949                                 lpfc_unreg_rpi(vport, ndlp);
 950                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 951                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
 952                         /* Fail outstanding IO now since device is
 953                          * marked for PLOGI.
 954                          */
 955                         lpfc_unreg_rpi(vport, ndlp);
 956                 }
 957         }
 958 }
 959
 960 static void
 961 lpfc_linkup_port(struct lpfc_vport *vport)
 962 {
 963         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 964         struct lpfc_hba  *phba = vport->phba;
 965
 966         if ((vport->load_flag & FC_UNLOADING) != 0)
 967                 return;
 968
 969         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 970                 "Link Up:         top:x%x speed:x%x flg:x%x",
 971                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
 972
 973         /* If NPIV is not enabled, only bring the physical port up */
 974         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 975                 (vport != phba->pport))
 976                 return;
 977
 978         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
 979
 980         spin_lock_irq(shost->host_lock);
 981         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
 982                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
 983         vport->fc_flag |= FC_NDISC_ACTIVE;
 984         vport->fc_ns_retry = 0;
 985         spin_unlock_irq(shost->host_lock);
 986
 987         if (vport->fc_flag & FC_LBIT)
 988                 lpfc_linkup_cleanup_nodes(vport);
 989
 990 }
 991
 992 static int
 993 lpfc_linkup(struct lpfc_hba *phba)
 994 {
 995         struct lpfc_vport **vports;
 996         int i;
 997
 998         lpfc_cleanup_wt_rrqs(phba);
 999         phba->link_state = LPFC_LINK_UP;
1000
1001         /* Unblock fabric iocbs if they are blocked */
1002         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
1003         del_timer_sync(&phba->fabric_block_timer);
1004
1005         vports = lpfc_create_vport_work_array(phba);
1006         if (vports != NULL)
1007                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
1008                         lpfc_linkup_port(vports[i]);
1009         lpfc_destroy_vport_work_array(phba, vports);
1010
1011         return 0;
1012 }
1013
1014 /*
1015  * This routine handles processing a CLEAR_LA mailbox
1016  * command upon completion. It is setup in the LPFC_MBOXQ
1017  * as the completion routine when the command is
1018  * handed off to the SLI layer.
1019  */
1020 static void
1021 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1022 {
1023         struct lpfc_vport *vport = pmb->vport;
1024         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1025         struct lpfc_sli   *psli = &phba->sli;
1026         MAILBOX_t *mb = &pmb->u.mb;
1027         uint32_t control;
1028
1029         /* Since we don't do discovery right now, turn these off here */
1030         psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
1031         psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
1032         psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
1033
1034         /* Check for error */
1035         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
1036                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
1037                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1038                                  "0320 CLEAR_LA mbxStatus error x%x hba "
1039                                  "state x%x\n",
1040                                  mb->mbxStatus, vport->port_state);
1041                 phba->link_state = LPFC_HBA_ERROR;
1042                 goto out;
1043         }
1044
1045         if (vport->port_type == LPFC_PHYSICAL_PORT)
1046                 phba->link_state = LPFC_HBA_READY;
1047
1048         spin_lock_irq(&phba->hbalock);
1049         psli->sli_flag |= LPFC_PROCESS_LA;
1050         control = readl(phba->HCregaddr);
1051         control |= HC_LAINT_ENA;
1052         writel(control, phba->HCregaddr);
1053         readl(phba->HCregaddr); /* flush */
1054         spin_unlock_irq(&phba->hbalock);
1055         mempool_free(pmb, phba->mbox_mem_pool);
1056         return;
1057
1058 out:
1059         /* Device Discovery completes */
1060         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1061                          "0225 Device Discovery completes\n");
1062         mempool_free(pmb, phba->mbox_mem_pool);
1063
1064         spin_lock_irq(shost->host_lock);
1065         vport->fc_flag &= ~FC_ABORT_DISCOVERY;
1066         spin_unlock_irq(shost->host_lock);
1067
1068         lpfc_can_disctmo(vport);
1069
1070         /* turn on Link Attention interrupts */
1071
1072         spin_lock_irq(&phba->hbalock);
1073         psli->sli_flag |= LPFC_PROCESS_LA;
1074         control = readl(phba->HCregaddr);
1075         control |= HC_LAINT_ENA;
1076         writel(control, phba->HCregaddr);
1077         readl(phba->HCregaddr); /* flush */
1078         spin_unlock_irq(&phba->hbalock);
1079
1080         return;
1081 }
1082
1083
1084 static void
1085 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1086 {
1087         struct lpfc_vport *vport = pmb->vport;
1088
1089         if (pmb->u.mb.mbxStatus)
1090                 goto out;
1091
1092         mempool_free(pmb, phba->mbox_mem_pool);
1093
1094         /* don't perform discovery for SLI4 loopback diagnostic test */
1095         if ((phba->sli_rev == LPFC_SLI_REV4) &&
1096             !(phba->hba_flag & HBA_FCOE_MODE) &&
1097             (phba->link_flag & LS_LOOPBACK_MODE))
1098                 return;
1099
1100         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
1101             vport->fc_flag & FC_PUBLIC_LOOP &&
1102             !(vport->fc_flag & FC_LBIT)) {
1103                         /* Need to wait for FAN - use discovery timer
1104                          * for timeout.  port_state is identically
1105                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
1106                          */
1107                         lpfc_set_disctmo(vport);
1108                         return;
1109         }
1110
1111         /* Start discovery by sending a FLOGI. port_state is identically
1112          * LPFC_FLOGI while waiting for FLOGI cmpl
1113          */
1114         if (vport->port_state != LPFC_FLOGI || vport->fc_flag & FC_PT2PT_PLOGI)
1115                 lpfc_initial_flogi(vport);
1116         return;
1117
1118 out:
1119         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1120                          "0306 CONFIG_LINK mbxStatus error x%x "
1121                          "HBA state x%x\n",
1122                          pmb->u.mb.mbxStatus, vport->port_state);
1123         mempool_free(pmb, phba->mbox_mem_pool);
1124
1125         lpfc_linkdown(phba);
1126
1127         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1128                          "0200 CONFIG_LINK bad hba state x%x\n",
1129                          vport->port_state);
1130
1131         lpfc_issue_clear_la(phba, vport);
1132         return;
1133 }
1134
1135 /**
1136  * lpfc_sli4_clear_fcf_rr_bmask
1137  * @phba pointer to the struct lpfc_hba for this port.
1138  * This fucnction resets the round robin bit mask and clears the
1139  * fcf priority list. The list deletions are done while holding the
1140  * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared
1141  * from the lpfc_fcf_pri record.
1142  **/
1143 void
1144 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba)
1145 {
1146         struct lpfc_fcf_pri *fcf_pri;
1147         struct lpfc_fcf_pri *next_fcf_pri;
1148         memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask));
1149         spin_lock_irq(&phba->hbalock);
1150         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
1151                                 &phba->fcf.fcf_pri_list, list) {
1152                 list_del_init(&fcf_pri->list);
1153                 fcf_pri->fcf_rec.flag = 0;
1154         }
1155         spin_unlock_irq(&phba->hbalock);
1156 }
1157 static void
1158 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1159 {
1160         struct lpfc_vport *vport = mboxq->vport;
1161
1162         if (mboxq->u.mb.mbxStatus) {
1163                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1164                          "2017 REG_FCFI mbxStatus error x%x "
1165                          "HBA state x%x\n",
1166                          mboxq->u.mb.mbxStatus, vport->port_state);
1167                 goto fail_out;
1168         }
1169
1170         /* Start FCoE discovery by sending a FLOGI. */
1171         phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1172         /* Set the FCFI registered flag */
1173         spin_lock_irq(&phba->hbalock);
1174         phba->fcf.fcf_flag |= FCF_REGISTERED;
1175         spin_unlock_irq(&phba->hbalock);
1176
1177         /* If there is a pending FCoE event, restart FCF table scan. */
1178         if ((!(phba->hba_flag & FCF_RR_INPROG)) &&
1179                 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF))
1180                 goto fail_out;
1181
1182         /* Mark successful completion of FCF table scan */
1183         spin_lock_irq(&phba->hbalock);
1184         phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1185         phba->hba_flag &= ~FCF_TS_INPROG;
1186         if (vport->port_state != LPFC_FLOGI) {
1187                 phba->hba_flag |= FCF_RR_INPROG;
1188                 spin_unlock_irq(&phba->hbalock);
1189                 lpfc_issue_init_vfi(vport);
1190                 goto out;
1191         }
1192         spin_unlock_irq(&phba->hbalock);
1193         goto out;
1194
1195 fail_out:
1196         spin_lock_irq(&phba->hbalock);
1197         phba->hba_flag &= ~FCF_RR_INPROG;
1198         spin_unlock_irq(&phba->hbalock);
1199 out:
1200         mempool_free(mboxq, phba->mbox_mem_pool);
1201 }
1202
1203 /**
1204  * lpfc_fab_name_match - Check if the fcf fabric name match.
1205  * @fab_name: pointer to fabric name.
1206  * @new_fcf_record: pointer to fcf record.
1207  *
1208  * This routine compare the fcf record's fabric name with provided
1209  * fabric name. If the fabric name are identical this function
1210  * returns 1 else return 0.
1211  **/
1212 static uint32_t
1213 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1214 {
1215         if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1216                 return 0;
1217         if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1218                 return 0;
1219         if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1220                 return 0;
1221         if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1222                 return 0;
1223         if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1224                 return 0;
1225         if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1226                 return 0;
1227         if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1228                 return 0;
1229         if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1230                 return 0;
1231         return 1;
1232 }
1233
1234 /**
1235  * lpfc_sw_name_match - Check if the fcf switch name match.
1236  * @fab_name: pointer to fabric name.
1237  * @new_fcf_record: pointer to fcf record.
1238  *
1239  * This routine compare the fcf record's switch name with provided
1240  * switch name. If the switch name are identical this function
1241  * returns 1 else return 0.
1242  **/
1243 static uint32_t
1244 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1245 {
1246         if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1247                 return 0;
1248         if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1249                 return 0;
1250         if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1251                 return 0;
1252         if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1253                 return 0;
1254         if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1255                 return 0;
1256         if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1257                 return 0;
1258         if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1259                 return 0;
1260         if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1261                 return 0;
1262         return 1;
1263 }
1264
1265 /**
1266  * lpfc_mac_addr_match - Check if the fcf mac address match.
1267  * @mac_addr: pointer to mac address.
1268  * @new_fcf_record: pointer to fcf record.
1269  *
1270  * This routine compare the fcf record's mac address with HBA's
1271  * FCF mac address. If the mac addresses are identical this function
1272  * returns 1 else return 0.
1273  **/
1274 static uint32_t
1275 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1276 {
1277         if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1278                 return 0;
1279         if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1280                 return 0;
1281         if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1282                 return 0;
1283         if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1284                 return 0;
1285         if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1286                 return 0;
1287         if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1288                 return 0;
1289         return 1;
1290 }
1291
1292 static bool
1293 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1294 {
1295         return (curr_vlan_id == new_vlan_id);
1296 }
1297
1298 /**
1299  * lpfc_update_fcf_record - Update driver fcf record
1300  * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record.
1301  * @phba: pointer to lpfc hba data structure.
1302  * @fcf_index: Index for the lpfc_fcf_record.
1303  * @new_fcf_record: pointer to hba fcf record.
1304  *
1305  * This routine updates the driver FCF priority record from the new HBA FCF
1306  * record. This routine is called with the host lock held.
1307  **/
1308 static void
1309 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index,
1310                                  struct fcf_record *new_fcf_record
1311                                  )
1312 {
1313         struct lpfc_fcf_pri *fcf_pri;
1314
1315         fcf_pri = &phba->fcf.fcf_pri[fcf_index];
1316         fcf_pri->fcf_rec.fcf_index = fcf_index;
1317         /* FCF record priority */
1318         fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
1319
1320 }
1321
1322 /**
1323  * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1324  * @fcf: pointer to driver fcf record.
1325  * @new_fcf_record: pointer to fcf record.
1326  *
1327  * This routine copies the FCF information from the FCF
1328  * record to lpfc_hba data structure.
1329  **/
1330 static void
1331 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1332                      struct fcf_record *new_fcf_record)
1333 {
1334         /* Fabric name */
1335         fcf_rec->fabric_name[0] =
1336                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1337         fcf_rec->fabric_name[1] =
1338                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1339         fcf_rec->fabric_name[2] =
1340                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1341         fcf_rec->fabric_name[3] =
1342                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1343         fcf_rec->fabric_name[4] =
1344                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1345         fcf_rec->fabric_name[5] =
1346                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1347         fcf_rec->fabric_name[6] =
1348                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1349         fcf_rec->fabric_name[7] =
1350                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1351         /* Mac address */
1352         fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1353         fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1354         fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1355         fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1356         fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1357         fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1358         /* FCF record index */
1359         fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1360         /* FCF record priority */
1361         fcf_rec->priority = new_fcf_record->fip_priority;
1362         /* Switch name */
1363         fcf_rec->switch_name[0] =
1364                 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1365         fcf_rec->switch_name[1] =
1366                 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1367         fcf_rec->switch_name[2] =
1368                 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1369         fcf_rec->switch_name[3] =
1370                 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1371         fcf_rec->switch_name[4] =
1372                 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1373         fcf_rec->switch_name[5] =
1374                 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1375         fcf_rec->switch_name[6] =
1376                 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1377         fcf_rec->switch_name[7] =
1378                 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1379 }
1380
1381 /**
1382  * lpfc_update_fcf_record - Update driver fcf record
1383  * @phba: pointer to lpfc hba data structure.
1384  * @fcf_rec: pointer to driver fcf record.
1385  * @new_fcf_record: pointer to hba fcf record.
1386  * @addr_mode: address mode to be set to the driver fcf record.
1387  * @vlan_id: vlan tag to be set to the driver fcf record.
1388  * @flag: flag bits to be set to the driver fcf record.
1389  *
1390  * This routine updates the driver FCF record from the new HBA FCF record
1391  * together with the address mode, vlan_id, and other informations. This
1392  * routine is called with the host lock held.
1393  **/
1394 static void
1395 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1396                        struct fcf_record *new_fcf_record, uint32_t addr_mode,
1397                        uint16_t vlan_id, uint32_t flag)
1398 {
1399         /* Copy the fields from the HBA's FCF record */
1400         lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1401         /* Update other fields of driver FCF record */
1402         fcf_rec->addr_mode = addr_mode;
1403         fcf_rec->vlan_id = vlan_id;
1404         fcf_rec->flag |= (flag | RECORD_VALID);
1405         __lpfc_update_fcf_record_pri(phba,
1406                 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record),
1407                                  new_fcf_record);
1408 }
1409
1410 /**
1411  * lpfc_register_fcf - Register the FCF with hba.
1412  * @phba: pointer to lpfc hba data structure.
1413  *
1414  * This routine issues a register fcfi mailbox command to register
1415  * the fcf with HBA.
1416  **/
1417 static void
1418 lpfc_register_fcf(struct lpfc_hba *phba)
1419 {
1420         LPFC_MBOXQ_t *fcf_mbxq;
1421         int rc;
1422
1423         spin_lock_irq(&phba->hbalock);
1424         /* If the FCF is not available do nothing. */
1425         if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1426                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1427                 spin_unlock_irq(&phba->hbalock);
1428                 return;
1429         }
1430
1431         /* The FCF is already registered, start discovery */
1432         if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1433                 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1434                 phba->hba_flag &= ~FCF_TS_INPROG;
1435                 if (phba->pport->port_state != LPFC_FLOGI &&
1436                     phba->pport->fc_flag & FC_FABRIC) {
1437                         phba->hba_flag |= FCF_RR_INPROG;
1438                         spin_unlock_irq(&phba->hbalock);
1439                         lpfc_initial_flogi(phba->pport);
1440                         return;
1441                 }
1442                 spin_unlock_irq(&phba->hbalock);
1443                 return;
1444         }
1445         spin_unlock_irq(&phba->hbalock);
1446
1447         fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1448         if (!fcf_mbxq) {
1449                 spin_lock_irq(&phba->hbalock);
1450                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1451                 spin_unlock_irq(&phba->hbalock);
1452                 return;
1453         }
1454
1455         lpfc_reg_fcfi(phba, fcf_mbxq);
1456         fcf_mbxq->vport = phba->pport;
1457         fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1458         rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1459         if (rc == MBX_NOT_FINISHED) {
1460                 spin_lock_irq(&phba->hbalock);
1461                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1462                 spin_unlock_irq(&phba->hbalock);
1463                 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1464         }
1465
1466         return;
1467 }
1468
1469 /**
1470  * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1471  * @phba: pointer to lpfc hba data structure.
1472  * @new_fcf_record: pointer to fcf record.
1473  * @boot_flag: Indicates if this record used by boot bios.
1474  * @addr_mode: The address mode to be used by this FCF
1475  * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1476  *
1477  * This routine compare the fcf record with connect list obtained from the
1478  * config region to decide if this FCF can be used for SAN discovery. It returns
1479  * 1 if this record can be used for SAN discovery else return zero. If this FCF
1480  * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1481  * is used by boot bios and addr_mode will indicate the addressing mode to be
1482  * used for this FCF when the function returns.
1483  * If the FCF record need to be used with a particular vlan id, the vlan is
1484  * set in the vlan_id on return of the function. If not VLAN tagging need to
1485  * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
1486  **/
1487 static int
1488 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1489                         struct fcf_record *new_fcf_record,
1490                         uint32_t *boot_flag, uint32_t *addr_mode,
1491                         uint16_t *vlan_id)
1492 {
1493         struct lpfc_fcf_conn_entry *conn_entry;
1494         int i, j, fcf_vlan_id = 0;
1495
1496         /* Find the lowest VLAN id in the FCF record */
1497         for (i = 0; i < 512; i++) {
1498                 if (new_fcf_record->vlan_bitmap[i]) {
1499                         fcf_vlan_id = i * 8;
1500                         j = 0;
1501                         while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1502                                 j++;
1503                                 fcf_vlan_id++;
1504                         }
1505                         break;
1506                 }
1507         }
1508
1509         /* FCF not valid/available or solicitation in progress */
1510         if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1511             !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) ||
1512             bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record))
1513                 return 0;
1514
1515         if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1516                 *boot_flag = 0;
1517                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1518                                 new_fcf_record);
1519                 if (phba->valid_vlan)
1520                         *vlan_id = phba->vlan_id;
1521                 else
1522                         *vlan_id = LPFC_FCOE_NULL_VID;
1523                 return 1;
1524         }
1525
1526         /*
1527          * If there are no FCF connection table entry, driver connect to all
1528          * FCFs.
1529          */
1530         if (list_empty(&phba->fcf_conn_rec_list)) {
1531                 *boot_flag = 0;
1532                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1533                         new_fcf_record);
1534
1535                 /*
1536                  * When there are no FCF connect entries, use driver's default
1537                  * addressing mode - FPMA.
1538                  */
1539                 if (*addr_mode & LPFC_FCF_FPMA)
1540                         *addr_mode = LPFC_FCF_FPMA;
1541
1542                 /* If FCF record report a vlan id use that vlan id */
1543                 if (fcf_vlan_id)
1544                         *vlan_id = fcf_vlan_id;
1545                 else
1546                         *vlan_id = LPFC_FCOE_NULL_VID;
1547                 return 1;
1548         }
1549
1550         list_for_each_entry(conn_entry,
1551                             &phba->fcf_conn_rec_list, list) {
1552                 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1553                         continue;
1554
1555                 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1556                         !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1557                                              new_fcf_record))
1558                         continue;
1559                 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
1560                         !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
1561                                             new_fcf_record))
1562                         continue;
1563                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1564                         /*
1565                          * If the vlan bit map does not have the bit set for the
1566                          * vlan id to be used, then it is not a match.
1567                          */
1568                         if (!(new_fcf_record->vlan_bitmap
1569                                 [conn_entry->conn_rec.vlan_tag / 8] &
1570                                 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
1571                                 continue;
1572                 }
1573
1574                 /*
1575                  * If connection record does not support any addressing mode,
1576                  * skip the FCF record.
1577                  */
1578                 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
1579                         & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
1580                         continue;
1581
1582                 /*
1583                  * Check if the connection record specifies a required
1584                  * addressing mode.
1585                  */
1586                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1587                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
1588
1589                         /*
1590                          * If SPMA required but FCF not support this continue.
1591                          */
1592                         if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1593                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1594                                         new_fcf_record) & LPFC_FCF_SPMA))
1595                                 continue;
1596
1597                         /*
1598                          * If FPMA required but FCF not support this continue.
1599                          */
1600                         if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1601                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1602                                 new_fcf_record) & LPFC_FCF_FPMA))
1603                                 continue;
1604                 }
1605
1606                 /*
1607                  * This fcf record matches filtering criteria.
1608                  */
1609                 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
1610                         *boot_flag = 1;
1611                 else
1612                         *boot_flag = 0;
1613
1614                 /*
1615                  * If user did not specify any addressing mode, or if the
1616                  * preferred addressing mode specified by user is not supported
1617                  * by FCF, allow fabric to pick the addressing mode.
1618                  */
1619                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1620                                 new_fcf_record);
1621                 /*
1622                  * If the user specified a required address mode, assign that
1623                  * address mode
1624                  */
1625                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1626                         (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
1627                         *addr_mode = (conn_entry->conn_rec.flags &
1628                                 FCFCNCT_AM_SPMA) ?
1629                                 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
1630                 /*
1631                  * If the user specified a preferred address mode, use the
1632                  * addr mode only if FCF support the addr_mode.
1633                  */
1634                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1635                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1636                         (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1637                         (*addr_mode & LPFC_FCF_SPMA))
1638                                 *addr_mode = LPFC_FCF_SPMA;
1639                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1640                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1641                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1642                         (*addr_mode & LPFC_FCF_FPMA))
1643                                 *addr_mode = LPFC_FCF_FPMA;
1644
1645                 /* If matching connect list has a vlan id, use it */
1646                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
1647                         *vlan_id = conn_entry->conn_rec.vlan_tag;
1648                 /*
1649                  * If no vlan id is specified in connect list, use the vlan id
1650                  * in the FCF record
1651                  */
1652                 else if (fcf_vlan_id)
1653                         *vlan_id = fcf_vlan_id;
1654                 else
1655                         *vlan_id = LPFC_FCOE_NULL_VID;
1656
1657                 return 1;
1658         }
1659
1660         return 0;
1661 }
1662
1663 /**
1664  * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
1665  * @phba: pointer to lpfc hba data structure.
1666  * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
1667  *
1668  * This function check if there is any fcoe event pending while driver
1669  * scan FCF entries. If there is any pending event, it will restart the
1670  * FCF saning and return 1 else return 0.
1671  */
1672 int
1673 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
1674 {
1675         /*
1676          * If the Link is up and no FCoE events while in the
1677          * FCF discovery, no need to restart FCF discovery.
1678          */
1679         if ((phba->link_state  >= LPFC_LINK_UP) &&
1680             (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
1681                 return 0;
1682
1683         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1684                         "2768 Pending link or FCF event during current "
1685                         "handling of the previous event: link_state:x%x, "
1686                         "evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
1687                         phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
1688                         phba->fcoe_eventtag);
1689
1690         spin_lock_irq(&phba->hbalock);
1691         phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
1692         spin_unlock_irq(&phba->hbalock);
1693
1694         if (phba->link_state >= LPFC_LINK_UP) {
1695                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1696                                 "2780 Restart FCF table scan due to "
1697                                 "pending FCF event:evt_tag_at_scan:x%x, "
1698                                 "evt_tag_current:x%x\n",
1699                                 phba->fcoe_eventtag_at_fcf_scan,
1700                                 phba->fcoe_eventtag);
1701                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
1702         } else {
1703                 /*
1704                  * Do not continue FCF discovery and clear FCF_TS_INPROG
1705                  * flag
1706                  */
1707                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1708                                 "2833 Stop FCF discovery process due to link "
1709                                 "state change (x%x)\n", phba->link_state);
1710                 spin_lock_irq(&phba->hbalock);
1711                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1712                 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
1713                 spin_unlock_irq(&phba->hbalock);
1714         }
1715
1716         /* Unregister the currently registered FCF if required */
1717         if (unreg_fcf) {
1718                 spin_lock_irq(&phba->hbalock);
1719                 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
1720                 spin_unlock_irq(&phba->hbalock);
1721                 lpfc_sli4_unregister_fcf(phba);
1722         }
1723         return 1;
1724 }
1725
1726 /**
1727  * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
1728  * @phba: pointer to lpfc hba data structure.
1729  * @fcf_cnt: number of eligible fcf record seen so far.
1730  *
1731  * This function makes an running random selection decision on FCF record to
1732  * use through a sequence of @fcf_cnt eligible FCF records with equal
1733  * probability. To perform integer manunipulation of random numbers with
1734  * size unit32_t, the lower 16 bits of the 32-bit random number returned
1735  * from prandom_u32() are taken as the random random number generated.
1736  *
1737  * Returns true when outcome is for the newly read FCF record should be
1738  * chosen; otherwise, return false when outcome is for keeping the previously
1739  * chosen FCF record.
1740  **/
1741 static bool
1742 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
1743 {
1744         uint32_t rand_num;
1745
1746         /* Get 16-bit uniform random number */
1747         rand_num = 0xFFFF & prandom_u32();
1748
1749         /* Decision with probability 1/fcf_cnt */
1750         if ((fcf_cnt * rand_num) < 0xFFFF)
1751                 return true;
1752         else
1753                 return false;
1754 }
1755
1756 /**
1757  * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
1758  * @phba: pointer to lpfc hba data structure.
1759  * @mboxq: pointer to mailbox object.
1760  * @next_fcf_index: pointer to holder of next fcf index.
1761  *
1762  * This routine parses the non-embedded fcf mailbox command by performing the
1763  * necessarily error checking, non-embedded read FCF record mailbox command
1764  * SGE parsing, and endianness swapping.
1765  *
1766  * Returns the pointer to the new FCF record in the non-embedded mailbox
1767  * command DMA memory if successfully, other NULL.
1768  */
1769 static struct fcf_record *
1770 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
1771                              uint16_t *next_fcf_index)
1772 {
1773         void *virt_addr;
1774         dma_addr_t phys_addr;
1775         struct lpfc_mbx_sge sge;
1776         struct lpfc_mbx_read_fcf_tbl *read_fcf;
1777         uint32_t shdr_status, shdr_add_status;
1778         union lpfc_sli4_cfg_shdr *shdr;
1779         struct fcf_record *new_fcf_record;
1780
1781         /* Get the first SGE entry from the non-embedded DMA memory. This
1782          * routine only uses a single SGE.
1783          */
1784         lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
1785         phys_addr = getPaddr(sge.pa_hi, sge.pa_lo);
1786         if (unlikely(!mboxq->sge_array)) {
1787                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1788                                 "2524 Failed to get the non-embedded SGE "
1789                                 "virtual address\n");
1790                 return NULL;
1791         }
1792         virt_addr = mboxq->sge_array->addr[0];
1793
1794         shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
1795         lpfc_sli_pcimem_bcopy(shdr, shdr,
1796                               sizeof(union lpfc_sli4_cfg_shdr));
1797         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
1798         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
1799         if (shdr_status || shdr_add_status) {
1800                 if (shdr_status == STATUS_FCF_TABLE_EMPTY)
1801                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1802                                         "2726 READ_FCF_RECORD Indicates empty "
1803                                         "FCF table.\n");
1804                 else
1805                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1806                                         "2521 READ_FCF_RECORD mailbox failed "
1807                                         "with status x%x add_status x%x, "
1808                                         "mbx\n", shdr_status, shdr_add_status);
1809                 return NULL;
1810         }
1811
1812         /* Interpreting the returned information of the FCF record */
1813         read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
1814         lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
1815                               sizeof(struct lpfc_mbx_read_fcf_tbl));
1816         *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
1817         new_fcf_record = (struct fcf_record *)(virt_addr +
1818                           sizeof(struct lpfc_mbx_read_fcf_tbl));
1819         lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
1820                                 offsetof(struct fcf_record, vlan_bitmap));
1821         new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
1822         new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
1823
1824         return new_fcf_record;
1825 }
1826
1827 /**
1828  * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
1829  * @phba: pointer to lpfc hba data structure.
1830  * @fcf_record: pointer to the fcf record.
1831  * @vlan_id: the lowest vlan identifier associated to this fcf record.
1832  * @next_fcf_index: the index to the next fcf record in hba's fcf table.
1833  *
1834  * This routine logs the detailed FCF record if the LOG_FIP loggin is
1835  * enabled.
1836  **/
1837 static void
1838 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
1839                               struct fcf_record *fcf_record,
1840                               uint16_t vlan_id,
1841                               uint16_t next_fcf_index)
1842 {
1843         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1844                         "2764 READ_FCF_RECORD:\n"
1845                         "\tFCF_Index     : x%x\n"
1846                         "\tFCF_Avail     : x%x\n"
1847                         "\tFCF_Valid     : x%x\n"
1848                         "\tFCF_SOL       : x%x\n"
1849                         "\tFIP_Priority  : x%x\n"
1850                         "\tMAC_Provider  : x%x\n"
1851                         "\tLowest VLANID : x%x\n"
1852                         "\tFCF_MAC Addr  : x%x:%x:%x:%x:%x:%x\n"
1853                         "\tFabric_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1854                         "\tSwitch_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1855                         "\tNext_FCF_Index: x%x\n",
1856                         bf_get(lpfc_fcf_record_fcf_index, fcf_record),
1857                         bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
1858                         bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
1859                         bf_get(lpfc_fcf_record_fcf_sol, fcf_record),
1860                         fcf_record->fip_priority,
1861                         bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
1862                         vlan_id,
1863                         bf_get(lpfc_fcf_record_mac_0, fcf_record),
1864                         bf_get(lpfc_fcf_record_mac_1, fcf_record),
1865                         bf_get(lpfc_fcf_record_mac_2, fcf_record),
1866                         bf_get(lpfc_fcf_record_mac_3, fcf_record),
1867                         bf_get(lpfc_fcf_record_mac_4, fcf_record),
1868                         bf_get(lpfc_fcf_record_mac_5, fcf_record),
1869                         bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
1870                         bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
1871                         bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
1872                         bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
1873                         bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
1874                         bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
1875                         bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
1876                         bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
1877                         bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
1878                         bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
1879                         bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
1880                         bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
1881                         bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
1882                         bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
1883                         bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
1884                         bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
1885                         next_fcf_index);
1886 }
1887
1888 /**
1889  lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
1890  * @phba: pointer to lpfc hba data structure.
1891  * @fcf_rec: pointer to an existing FCF record.
1892  * @new_fcf_record: pointer to a new FCF record.
1893  * @new_vlan_id: vlan id from the new FCF record.
1894  *
1895  * This function performs matching test of a new FCF record against an existing
1896  * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
1897  * will not be used as part of the FCF record matching criteria.
1898  *
1899  * Returns true if all the fields matching, otherwise returns false.
1900  */
1901 static bool
1902 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
1903                            struct lpfc_fcf_rec *fcf_rec,
1904                            struct fcf_record *new_fcf_record,
1905                            uint16_t new_vlan_id)
1906 {
1907         if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
1908                 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
1909                         return false;
1910         if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
1911                 return false;
1912         if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
1913                 return false;
1914         if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
1915                 return false;
1916         if (fcf_rec->priority != new_fcf_record->fip_priority)
1917                 return false;
1918         return true;
1919 }
1920
1921 /**
1922  * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf
1923  * @vport: Pointer to vport object.
1924  * @fcf_index: index to next fcf.
1925  *
1926  * This function processing the roundrobin fcf failover to next fcf index.
1927  * When this function is invoked, there will be a current fcf registered
1928  * for flogi.
1929  * Return: 0 for continue retrying flogi on currently registered fcf;
1930  *         1 for stop flogi on currently registered fcf;
1931  */
1932 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index)
1933 {
1934         struct lpfc_hba *phba = vport->phba;
1935         int rc;
1936
1937         if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
1938                 spin_lock_irq(&phba->hbalock);
1939                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
1940                         spin_unlock_irq(&phba->hbalock);
1941                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1942                                         "2872 Devloss tmo with no eligible "
1943                                         "FCF, unregister in-use FCF (x%x) "
1944                                         "and rescan FCF table\n",
1945                                         phba->fcf.current_rec.fcf_indx);
1946                         lpfc_unregister_fcf_rescan(phba);
1947                         goto stop_flogi_current_fcf;
1948                 }
1949                 /* Mark the end to FLOGI roundrobin failover */
1950                 phba->hba_flag &= ~FCF_RR_INPROG;
1951                 /* Allow action to new fcf asynchronous event */
1952                 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
1953                 spin_unlock_irq(&phba->hbalock);
1954                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1955                                 "2865 No FCF available, stop roundrobin FCF "
1956                                 "failover and change port state:x%x/x%x\n",
1957                                 phba->pport->port_state, LPFC_VPORT_UNKNOWN);
1958                 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
1959                 goto stop_flogi_current_fcf;
1960         } else {
1961                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS,
1962                                 "2794 Try FLOGI roundrobin FCF failover to "
1963                                 "(x%x)\n", fcf_index);
1964                 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index);
1965                 if (rc)
1966                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
1967                                         "2761 FLOGI roundrobin FCF failover "
1968                                         "failed (rc:x%x) to read FCF (x%x)\n",
1969                                         rc, phba->fcf.current_rec.fcf_indx);
1970                 else
1971                         goto stop_flogi_current_fcf;
1972         }
1973         return 0;
1974
1975 stop_flogi_current_fcf:
1976         lpfc_can_disctmo(vport);
1977         return 1;
1978 }
1979
1980 /**
1981  * lpfc_sli4_fcf_pri_list_del
1982  * @phba: pointer to lpfc hba data structure.
1983  * @fcf_index the index of the fcf record to delete
1984  * This routine checks the on list flag of the fcf_index to be deleted.
1985  * If it is one the list then it is removed from the list, and the flag
1986  * is cleared. This routine grab the hbalock before removing the fcf
1987  * record from the list.
1988  **/
1989 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba,
1990                         uint16_t fcf_index)
1991 {
1992         struct lpfc_fcf_pri *new_fcf_pri;
1993
1994         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
1995         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1996                 "3058 deleting idx x%x pri x%x flg x%x\n",
1997                 fcf_index, new_fcf_pri->fcf_rec.priority,
1998                  new_fcf_pri->fcf_rec.flag);
1999         spin_lock_irq(&phba->hbalock);
2000         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) {
2001                 if (phba->fcf.current_rec.priority ==
2002                                 new_fcf_pri->fcf_rec.priority)
2003                         phba->fcf.eligible_fcf_cnt--;
2004                 list_del_init(&new_fcf_pri->list);
2005                 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST;
2006         }
2007         spin_unlock_irq(&phba->hbalock);
2008 }
2009
2010 /**
2011  * lpfc_sli4_set_fcf_flogi_fail
2012  * @phba: pointer to lpfc hba data structure.
2013  * @fcf_index the index of the fcf record to update
2014  * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED
2015  * flag so the the round robin slection for the particular priority level
2016  * will try a different fcf record that does not have this bit set.
2017  * If the fcf record is re-read for any reason this flag is cleared brfore
2018  * adding it to the priority list.
2019  **/
2020 void
2021 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index)
2022 {
2023         struct lpfc_fcf_pri *new_fcf_pri;
2024         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2025         spin_lock_irq(&phba->hbalock);
2026         new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED;
2027         spin_unlock_irq(&phba->hbalock);
2028 }
2029
2030 /**
2031  * lpfc_sli4_fcf_pri_list_add
2032  * @phba: pointer to lpfc hba data structure.
2033  * @fcf_index the index of the fcf record to add
2034  * This routine checks the priority of the fcf_index to be added.
2035  * If it is a lower priority than the current head of the fcf_pri list
2036  * then it is added to the list in the right order.
2037  * If it is the same priority as the current head of the list then it
2038  * is added to the head of the list and its bit in the rr_bmask is set.
2039  * If the fcf_index to be added is of a higher priority than the current
2040  * head of the list then the rr_bmask is cleared, its bit is set in the
2041  * rr_bmask and it is added to the head of the list.
2042  * returns:
2043  * 0=success 1=failure
2044  **/
2045 int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba, uint16_t fcf_index,
2046         struct fcf_record *new_fcf_record)
2047 {
2048         uint16_t current_fcf_pri;
2049         uint16_t last_index;
2050         struct lpfc_fcf_pri *fcf_pri;
2051         struct lpfc_fcf_pri *next_fcf_pri;
2052         struct lpfc_fcf_pri *new_fcf_pri;
2053         int ret;
2054
2055         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2056         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2057                 "3059 adding idx x%x pri x%x flg x%x\n",
2058                 fcf_index, new_fcf_record->fip_priority,
2059                  new_fcf_pri->fcf_rec.flag);
2060         spin_lock_irq(&phba->hbalock);
2061         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST)
2062                 list_del_init(&new_fcf_pri->list);
2063         new_fcf_pri->fcf_rec.fcf_index = fcf_index;
2064         new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
2065         if (list_empty(&phba->fcf.fcf_pri_list)) {
2066                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2067                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2068                                 new_fcf_pri->fcf_rec.fcf_index);
2069                 goto out;
2070         }
2071
2072         last_index = find_first_bit(phba->fcf.fcf_rr_bmask,
2073                                 LPFC_SLI4_FCF_TBL_INDX_MAX);
2074         if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
2075                 ret = 0; /* Empty rr list */
2076                 goto out;
2077         }
2078         current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority;
2079         if (new_fcf_pri->fcf_rec.priority <=  current_fcf_pri) {
2080                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2081                 if (new_fcf_pri->fcf_rec.priority <  current_fcf_pri) {
2082                         memset(phba->fcf.fcf_rr_bmask, 0,
2083                                 sizeof(*phba->fcf.fcf_rr_bmask));
2084                         /* fcfs_at_this_priority_level = 1; */
2085                         phba->fcf.eligible_fcf_cnt = 1;
2086                 } else
2087                         /* fcfs_at_this_priority_level++; */
2088                         phba->fcf.eligible_fcf_cnt++;
2089                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2090                                 new_fcf_pri->fcf_rec.fcf_index);
2091                 goto out;
2092         }
2093
2094         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
2095                                 &phba->fcf.fcf_pri_list, list) {
2096                 if (new_fcf_pri->fcf_rec.priority <=
2097                                 fcf_pri->fcf_rec.priority) {
2098                         if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list)
2099                                 list_add(&new_fcf_pri->list,
2100                                                 &phba->fcf.fcf_pri_list);
2101                         else
2102                                 list_add(&new_fcf_pri->list,
2103                                          &((struct lpfc_fcf_pri *)
2104                                         fcf_pri->list.prev)->list);
2105                         ret = 0;
2106                         goto out;
2107                 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list
2108                         || new_fcf_pri->fcf_rec.priority <
2109                                 next_fcf_pri->fcf_rec.priority) {
2110                         list_add(&new_fcf_pri->list, &fcf_pri->list);
2111                         ret = 0;
2112                         goto out;
2113                 }
2114                 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority)
2115                         continue;
2116
2117         }
2118         ret = 1;
2119 out:
2120         /* we use = instead of |= to clear the FLOGI_FAILED flag. */
2121         new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST;
2122         spin_unlock_irq(&phba->hbalock);
2123         return ret;
2124 }
2125
2126 /**
2127  * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
2128  * @phba: pointer to lpfc hba data structure.
2129  * @mboxq: pointer to mailbox object.
2130  *
2131  * This function iterates through all the fcf records available in
2132  * HBA and chooses the optimal FCF record for discovery. After finding
2133  * the FCF for discovery it registers the FCF record and kicks start
2134  * discovery.
2135  * If FCF_IN_USE flag is set in currently used FCF, the routine tries to
2136  * use an FCF record which matches fabric name and mac address of the
2137  * currently used FCF record.
2138  * If the driver supports only one FCF, it will try to use the FCF record
2139  * used by BOOT_BIOS.
2140  */
2141 void
2142 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2143 {
2144         struct fcf_record *new_fcf_record;
2145         uint32_t boot_flag, addr_mode;
2146         uint16_t fcf_index, next_fcf_index;
2147         struct lpfc_fcf_rec *fcf_rec = NULL;
2148         uint16_t vlan_id;
2149         uint32_t seed;
2150         bool select_new_fcf;
2151         int rc;
2152
2153         /* If there is pending FCoE event restart FCF table scan */
2154         if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) {
2155                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2156                 return;
2157         }
2158
2159         /* Parse the FCF record from the non-embedded mailbox command */
2160         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2161                                                       &next_fcf_index);
2162         if (!new_fcf_record) {
2163                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
2164                                 "2765 Mailbox command READ_FCF_RECORD "
2165                                 "failed to retrieve a FCF record.\n");
2166                 /* Let next new FCF event trigger fast failover */
2167                 spin_lock_irq(&phba->hbalock);
2168                 phba->hba_flag &= ~FCF_TS_INPROG;
2169                 spin_unlock_irq(&phba->hbalock);
2170                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2171                 return;
2172         }
2173
2174         /* Check the FCF record against the connection list */
2175         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2176                                       &addr_mode, &vlan_id);
2177
2178         /* Log the FCF record information if turned on */
2179         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2180                                       next_fcf_index);
2181
2182         /*
2183          * If the fcf record does not match with connect list entries
2184          * read the next entry; otherwise, this is an eligible FCF
2185          * record for roundrobin FCF failover.
2186          */
2187         if (!rc) {
2188                 lpfc_sli4_fcf_pri_list_del(phba,
2189                                         bf_get(lpfc_fcf_record_fcf_index,
2190                                                new_fcf_record));
2191                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2192                                 "2781 FCF (x%x) failed connection "
2193                                 "list check: (x%x/x%x/%x)\n",
2194                                 bf_get(lpfc_fcf_record_fcf_index,
2195                                        new_fcf_record),
2196                                 bf_get(lpfc_fcf_record_fcf_avail,
2197                                        new_fcf_record),
2198                                 bf_get(lpfc_fcf_record_fcf_valid,
2199                                        new_fcf_record),
2200                                 bf_get(lpfc_fcf_record_fcf_sol,
2201                                        new_fcf_record));
2202                 if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
2203                     lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2204                     new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
2205                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) !=
2206                             phba->fcf.current_rec.fcf_indx) {
2207                                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
2208                                         "2862 FCF (x%x) matches property "
2209                                         "of in-use FCF (x%x)\n",
2210                                         bf_get(lpfc_fcf_record_fcf_index,
2211                                                new_fcf_record),
2212                                         phba->fcf.current_rec.fcf_indx);
2213                                 goto read_next_fcf;
2214                         }
2215                         /*
2216                          * In case the current in-use FCF record becomes
2217                          * invalid/unavailable during FCF discovery that
2218                          * was not triggered by fast FCF failover process,
2219                          * treat it as fast FCF failover.
2220                          */
2221                         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
2222                             !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2223                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2224                                                 "2835 Invalid in-use FCF "
2225                                                 "(x%x), enter FCF failover "
2226                                                 "table scan.\n",
2227                                                 phba->fcf.current_rec.fcf_indx);
2228                                 spin_lock_irq(&phba->hbalock);
2229                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2230                                 spin_unlock_irq(&phba->hbalock);
2231                                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2232                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2233                                                 LPFC_FCOE_FCF_GET_FIRST);
2234                                 return;
2235                         }
2236                 }
2237                 goto read_next_fcf;
2238         } else {
2239                 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2240                 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index,
2241                                                         new_fcf_record);
2242                 if (rc)
2243                         goto read_next_fcf;
2244         }
2245
2246         /*
2247          * If this is not the first FCF discovery of the HBA, use last
2248          * FCF record for the discovery. The condition that a rescan
2249          * matches the in-use FCF record: fabric name, switch name, mac
2250          * address, and vlan_id.
2251          */
2252         spin_lock_irq(&phba->hbalock);
2253         if (phba->fcf.fcf_flag & FCF_IN_USE) {
2254                 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2255                         lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2256                     new_fcf_record, vlan_id)) {
2257                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) ==
2258                             phba->fcf.current_rec.fcf_indx) {
2259                                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2260                                 if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
2261                                         /* Stop FCF redisc wait timer */
2262                                         __lpfc_sli4_stop_fcf_redisc_wait_timer(
2263                                                                         phba);
2264                                 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2265                                         /* Fast failover, mark completed */
2266                                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2267                                 spin_unlock_irq(&phba->hbalock);
2268                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2269                                                 "2836 New FCF matches in-use "
2270                                                 "FCF (x%x), port_state:x%x, "
2271                                                 "fc_flag:x%x\n",
2272                                                 phba->fcf.current_rec.fcf_indx,
2273                                                 phba->pport->port_state,
2274                                                 phba->pport->fc_flag);
2275                                 goto out;
2276                         } else
2277                                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
2278                                         "2863 New FCF (x%x) matches "
2279                                         "property of in-use FCF (x%x)\n",
2280                                         bf_get(lpfc_fcf_record_fcf_index,
2281                                                new_fcf_record),
2282                                         phba->fcf.current_rec.fcf_indx);
2283                 }
2284                 /*
2285                  * Read next FCF record from HBA searching for the matching
2286                  * with in-use record only if not during the fast failover
2287                  * period. In case of fast failover period, it shall try to
2288                  * determine whether the FCF record just read should be the
2289                  * next candidate.
2290                  */
2291                 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2292                         spin_unlock_irq(&phba->hbalock);
2293                         goto read_next_fcf;
2294                 }
2295         }
2296         /*
2297          * Update on failover FCF record only if it's in FCF fast-failover
2298          * period; otherwise, update on current FCF record.
2299          */
2300         if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2301                 fcf_rec = &phba->fcf.failover_rec;
2302         else
2303                 fcf_rec = &phba->fcf.current_rec;
2304
2305         if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
2306                 /*
2307                  * If the driver FCF record does not have boot flag
2308                  * set and new hba fcf record has boot flag set, use
2309                  * the new hba fcf record.
2310                  */
2311                 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
2312                         /* Choose this FCF record */
2313                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2314                                         "2837 Update current FCF record "
2315                                         "(x%x) with new FCF record (x%x)\n",
2316                                         fcf_rec->fcf_indx,
2317                                         bf_get(lpfc_fcf_record_fcf_index,
2318                                         new_fcf_record));
2319                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2320                                         addr_mode, vlan_id, BOOT_ENABLE);
2321                         spin_unlock_irq(&phba->hbalock);
2322                         goto read_next_fcf;
2323                 }
2324                 /*
2325                  * If the driver FCF record has boot flag set and the
2326                  * new hba FCF record does not have boot flag, read
2327                  * the next FCF record.
2328                  */
2329                 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
2330                         spin_unlock_irq(&phba->hbalock);
2331                         goto read_next_fcf;
2332                 }
2333                 /*
2334                  * If the new hba FCF record has lower priority value
2335                  * than the driver FCF record, use the new record.
2336                  */
2337                 if (new_fcf_record->fip_priority < fcf_rec->priority) {
2338                         /* Choose the new FCF record with lower priority */
2339                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2340                                         "2838 Update current FCF record "
2341                                         "(x%x) with new FCF record (x%x)\n",
2342                                         fcf_rec->fcf_indx,
2343                                         bf_get(lpfc_fcf_record_fcf_index,
2344                                                new_fcf_record));
2345                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2346                                         addr_mode, vlan_id, 0);
2347                         /* Reset running random FCF selection count */
2348                         phba->fcf.eligible_fcf_cnt = 1;
2349                 } else if (new_fcf_record->fip_priority == fcf_rec->priority) {
2350                         /* Update running random FCF selection count */
2351                         phba->fcf.eligible_fcf_cnt++;
2352                         select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
2353                                                 phba->fcf.eligible_fcf_cnt);
2354                         if (select_new_fcf) {
2355                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2356                                         "2839 Update current FCF record "
2357                                         "(x%x) with new FCF record (x%x)\n",
2358                                         fcf_rec->fcf_indx,
2359                                         bf_get(lpfc_fcf_record_fcf_index,
2360                                                new_fcf_record));
2361                                 /* Choose the new FCF by random selection */
2362                                 __lpfc_update_fcf_record(phba, fcf_rec,
2363                                                          new_fcf_record,
2364                                                          addr_mode, vlan_id, 0);
2365                         }
2366                 }
2367                 spin_unlock_irq(&phba->hbalock);
2368                 goto read_next_fcf;
2369         }
2370         /*
2371          * This is the first suitable FCF record, choose this record for
2372          * initial best-fit FCF.
2373          */
2374         if (fcf_rec) {
2375                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2376                                 "2840 Update initial FCF candidate "
2377                                 "with FCF (x%x)\n",
2378                                 bf_get(lpfc_fcf_record_fcf_index,
2379                                        new_fcf_record));
2380                 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2381                                          addr_mode, vlan_id, (boot_flag ?
2382                                          BOOT_ENABLE : 0));
2383                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2384                 /* Setup initial running random FCF selection count */
2385                 phba->fcf.eligible_fcf_cnt = 1;
2386                 /* Seeding the random number generator for random selection */
2387                 seed = (uint32_t)(0xFFFFFFFF & jiffies);
2388                 prandom_seed(seed);
2389         }
2390         spin_unlock_irq(&phba->hbalock);
2391         goto read_next_fcf;
2392
2393 read_next_fcf:
2394         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2395         if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
2396                 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
2397                         /*
2398                          * Case of FCF fast failover scan
2399                          */
2400
2401                         /*
2402                          * It has not found any suitable FCF record, cancel
2403                          * FCF scan inprogress, and do nothing
2404                          */
2405                         if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
2406                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2407                                                "2782 No suitable FCF found: "
2408                                                "(x%x/x%x)\n",
2409                                                phba->fcoe_eventtag_at_fcf_scan,
2410                                                bf_get(lpfc_fcf_record_fcf_index,
2411                                                       new_fcf_record));
2412                                 spin_lock_irq(&phba->hbalock);
2413                                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2414                                         phba->hba_flag &= ~FCF_TS_INPROG;
2415                                         spin_unlock_irq(&phba->hbalock);
2416                                         /* Unregister in-use FCF and rescan */
2417                                         lpfc_printf_log(phba, KERN_INFO,
2418                                                         LOG_FIP,
2419                                                         "2864 On devloss tmo "
2420                                                         "unreg in-use FCF and "
2421                                                         "rescan FCF table\n");
2422                                         lpfc_unregister_fcf_rescan(phba);
2423                                         return;
2424                                 }
2425                                 /*
2426                                  * Let next new FCF event trigger fast failover
2427                                  */
2428                                 phba->hba_flag &= ~FCF_TS_INPROG;
2429                                 spin_unlock_irq(&phba->hbalock);
2430                                 return;
2431                         }
2432                         /*
2433                          * It has found a suitable FCF record that is not
2434                          * the same as in-use FCF record, unregister the
2435                          * in-use FCF record, replace the in-use FCF record
2436                          * with the new FCF record, mark FCF fast failover
2437                          * completed, and then start register the new FCF
2438                          * record.
2439                          */
2440
2441                         /* Unregister the current in-use FCF record */
2442                         lpfc_unregister_fcf(phba);
2443
2444                         /* Replace in-use record with the new record */
2445                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2446                                         "2842 Replace in-use FCF (x%x) "
2447                                         "with failover FCF (x%x)\n",
2448                                         phba->fcf.current_rec.fcf_indx,
2449                                         phba->fcf.failover_rec.fcf_indx);
2450                         memcpy(&phba->fcf.current_rec,
2451                                &phba->fcf.failover_rec,
2452                                sizeof(struct lpfc_fcf_rec));
2453                         /*
2454                          * Mark the fast FCF failover rediscovery completed
2455                          * and the start of the first round of the roundrobin
2456                          * FCF failover.
2457                          */
2458                         spin_lock_irq(&phba->hbalock);
2459                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2460                         spin_unlock_irq(&phba->hbalock);
2461                         /* Register to the new FCF record */
2462                         lpfc_register_fcf(phba);
2463                 } else {
2464                         /*
2465                          * In case of transaction period to fast FCF failover,
2466                          * do nothing when search to the end of the FCF table.
2467                          */
2468                         if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
2469                             (phba->fcf.fcf_flag & FCF_REDISC_PEND))
2470                                 return;
2471
2472                         if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2473                                 phba->fcf.fcf_flag & FCF_IN_USE) {
2474                                 /*
2475                                  * In case the current in-use FCF record no
2476                                  * longer existed during FCF discovery that
2477                                  * was not triggered by fast FCF failover
2478                                  * process, treat it as fast FCF failover.
2479                                  */
2480                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2481                                                 "2841 In-use FCF record (x%x) "
2482                                                 "not reported, entering fast "
2483                                                 "FCF failover mode scanning.\n",
2484                                                 phba->fcf.current_rec.fcf_indx);
2485                                 spin_lock_irq(&phba->hbalock);
2486                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2487                                 spin_unlock_irq(&phba->hbalock);
2488                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2489                                                 LPFC_FCOE_FCF_GET_FIRST);
2490                                 return;
2491                         }
2492                         /* Register to the new FCF record */
2493                         lpfc_register_fcf(phba);
2494                 }
2495         } else
2496                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
2497         return;
2498
2499 out:
2500         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2501         lpfc_register_fcf(phba);
2502
2503         return;
2504 }
2505
2506 /**
2507  * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler
2508  * @phba: pointer to lpfc hba data structure.
2509  * @mboxq: pointer to mailbox object.
2510  *
2511  * This is the callback function for FLOGI failure roundrobin FCF failover
2512  * read FCF record mailbox command from the eligible FCF record bmask for
2513  * performing the failover. If the FCF read back is not valid/available, it
2514  * fails through to retrying FLOGI to the currently registered FCF again.
2515  * Otherwise, if the FCF read back is valid and available, it will set the
2516  * newly read FCF record to the failover FCF record, unregister currently
2517  * registered FCF record, copy the failover FCF record to the current
2518  * FCF record, and then register the current FCF record before proceeding
2519  * to trying FLOGI on the new failover FCF.
2520  */
2521 void
2522 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2523 {
2524         struct fcf_record *new_fcf_record;
2525         uint32_t boot_flag, addr_mode;
2526         uint16_t next_fcf_index, fcf_index;
2527         uint16_t current_fcf_index;
2528         uint16_t vlan_id;
2529         int rc;
2530
2531         /* If link state is not up, stop the roundrobin failover process */
2532         if (phba->link_state < LPFC_LINK_UP) {
2533                 spin_lock_irq(&phba->hbalock);
2534                 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
2535                 phba->hba_flag &= ~FCF_RR_INPROG;
2536                 spin_unlock_irq(&phba->hbalock);
2537                 goto out;
2538         }
2539
2540         /* Parse the FCF record from the non-embedded mailbox command */
2541         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2542                                                       &next_fcf_index);
2543         if (!new_fcf_record) {
2544                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2545                                 "2766 Mailbox command READ_FCF_RECORD "
2546                                 "failed to retrieve a FCF record. "
2547                                 "hba_flg x%x fcf_flg x%x\n", phba->hba_flag,
2548                                 phba->fcf.fcf_flag);
2549                 lpfc_unregister_fcf_rescan(phba);
2550                 goto out;
2551         }
2552
2553         /* Get the needed parameters from FCF record */
2554         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2555                                       &addr_mode, &vlan_id);
2556
2557         /* Log the FCF record information if turned on */
2558         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2559                                       next_fcf_index);
2560
2561         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2562         if (!rc) {
2563                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2564                                 "2848 Remove ineligible FCF (x%x) from "
2565                                 "from roundrobin bmask\n", fcf_index);
2566                 /* Clear roundrobin bmask bit for ineligible FCF */
2567                 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index);
2568                 /* Perform next round of roundrobin FCF failover */
2569                 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
2570                 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index);
2571                 if (rc)
2572                         goto out;
2573                 goto error_out;
2574         }
2575
2576         if (fcf_index == phba->fcf.current_rec.fcf_indx) {
2577                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2578                                 "2760 Perform FLOGI roundrobin FCF failover: "
2579                                 "FCF (x%x) back to FCF (x%x)\n",
2580                                 phba->fcf.current_rec.fcf_indx, fcf_index);
2581                 /* Wait 500 ms before retrying FLOGI to current FCF */
2582                 msleep(500);
2583                 lpfc_issue_init_vfi(phba->pport);
2584                 goto out;
2585         }
2586
2587         /* Upload new FCF record to the failover FCF record */
2588         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2589                         "2834 Update current FCF (x%x) with new FCF (x%x)\n",
2590                         phba->fcf.failover_rec.fcf_indx, fcf_index);
2591         spin_lock_irq(&phba->hbalock);
2592         __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
2593                                  new_fcf_record, addr_mode, vlan_id,
2594                                  (boot_flag ? BOOT_ENABLE : 0));
2595         spin_unlock_irq(&phba->hbalock);
2596
2597         current_fcf_index = phba->fcf.current_rec.fcf_indx;
2598
2599         /* Unregister the current in-use FCF record */
2600         lpfc_unregister_fcf(phba);
2601
2602         /* Replace in-use record with the new record */
2603         memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
2604                sizeof(struct lpfc_fcf_rec));
2605
2606         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2607                         "2783 Perform FLOGI roundrobin FCF failover: FCF "
2608                         "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index);
2609
2610 error_out:
2611         lpfc_register_fcf(phba);
2612 out:
2613         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2614 }
2615
2616 /**
2617  * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
2618  * @phba: pointer to lpfc hba data structure.
2619  * @mboxq: pointer to mailbox object.
2620  *
2621  * This is the callback function of read FCF record mailbox command for
2622  * updating the eligible FCF bmask for FLOGI failure roundrobin FCF
2623  * failover when a new FCF event happened. If the FCF read back is
2624  * valid/available and it passes the connection list check, it updates
2625  * the bmask for the eligible FCF record for roundrobin failover.
2626  */
2627 void
2628 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2629 {
2630         struct fcf_record *new_fcf_record;
2631         uint32_t boot_flag, addr_mode;
2632         uint16_t fcf_index, next_fcf_index;
2633         uint16_t vlan_id;
2634         int rc;
2635
2636         /* If link state is not up, no need to proceed */
2637         if (phba->link_state < LPFC_LINK_UP)
2638                 goto out;
2639
2640         /* If FCF discovery period is over, no need to proceed */
2641         if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
2642                 goto out;
2643
2644         /* Parse the FCF record from the non-embedded mailbox command */
2645         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2646                                                       &next_fcf_index);
2647         if (!new_fcf_record) {
2648                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2649                                 "2767 Mailbox command READ_FCF_RECORD "
2650                                 "failed to retrieve a FCF record.\n");
2651                 goto out;
2652         }
2653
2654         /* Check the connection list for eligibility */
2655         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2656                                       &addr_mode, &vlan_id);
2657
2658         /* Log the FCF record information if turned on */
2659         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2660                                       next_fcf_index);
2661
2662         if (!rc)
2663                 goto out;
2664
2665         /* Update the eligible FCF record index bmask */
2666         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2667
2668         rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record);
2669
2670 out:
2671         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2672 }
2673
2674 /**
2675  * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command.
2676  * @phba: pointer to lpfc hba data structure.
2677  * @mboxq: pointer to mailbox data structure.
2678  *
2679  * This function handles completion of init vfi mailbox command.
2680  */
2681 void
2682 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2683 {
2684         struct lpfc_vport *vport = mboxq->vport;
2685
2686         /*
2687          * VFI not supported on interface type 0, just do the flogi
2688          * Also continue if the VFI is in use - just use the same one.
2689          */
2690         if (mboxq->u.mb.mbxStatus &&
2691             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
2692                         LPFC_SLI_INTF_IF_TYPE_0) &&
2693             mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
2694                 lpfc_printf_vlog(vport, KERN_ERR,
2695                                 LOG_MBOX,
2696                                 "2891 Init VFI mailbox failed 0x%x\n",
2697                                 mboxq->u.mb.mbxStatus);
2698                 mempool_free(mboxq, phba->mbox_mem_pool);
2699                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2700                 return;
2701         }
2702
2703         lpfc_initial_flogi(vport);
2704         mempool_free(mboxq, phba->mbox_mem_pool);
2705         return;
2706 }
2707
2708 /**
2709  * lpfc_issue_init_vfi - Issue init_vfi mailbox command.
2710  * @vport: pointer to lpfc_vport data structure.
2711  *
2712  * This function issue a init_vfi mailbox command to initialize the VFI and
2713  * VPI for the physical port.
2714  */
2715 void
2716 lpfc_issue_init_vfi(struct lpfc_vport *vport)
2717 {
2718         LPFC_MBOXQ_t *mboxq;
2719         int rc;
2720         struct lpfc_hba *phba = vport->phba;
2721
2722         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2723         if (!mboxq) {
2724                 lpfc_printf_vlog(vport, KERN_ERR,
2725                         LOG_MBOX, "2892 Failed to allocate "
2726                         "init_vfi mailbox\n");
2727                 return;
2728         }
2729         lpfc_init_vfi(mboxq, vport);
2730         mboxq->mbox_cmpl = lpfc_init_vfi_cmpl;
2731         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
2732         if (rc == MBX_NOT_FINISHED) {
2733                 lpfc_printf_vlog(vport, KERN_ERR,
2734                         LOG_MBOX, "2893 Failed to issue init_vfi mailbox\n");
2735                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
2736         }
2737 }
2738
2739 /**
2740  * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
2741  * @phba: pointer to lpfc hba data structure.
2742  * @mboxq: pointer to mailbox data structure.
2743  *
2744  * This function handles completion of init vpi mailbox command.
2745  */
2746 void
2747 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2748 {
2749         struct lpfc_vport *vport = mboxq->vport;
2750         struct lpfc_nodelist *ndlp;
2751         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2752
2753         if (mboxq->u.mb.mbxStatus) {
2754                 lpfc_printf_vlog(vport, KERN_ERR,
2755                                 LOG_MBOX,
2756                                 "2609 Init VPI mailbox failed 0x%x\n",
2757                                 mboxq->u.mb.mbxStatus);
2758                 mempool_free(mboxq, phba->mbox_mem_pool);
2759                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2760                 return;
2761         }
2762         spin_lock_irq(shost->host_lock);
2763         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
2764         spin_unlock_irq(shost->host_lock);
2765
2766         /* If this port is physical port or FDISC is done, do reg_vpi */
2767         if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
2768                         ndlp = lpfc_findnode_did(vport, Fabric_DID);
2769                         if (!ndlp)
2770                                 lpfc_printf_vlog(vport, KERN_ERR,
2771                                         LOG_DISCOVERY,
2772                                         "2731 Cannot find fabric "
2773                                         "controller node\n");
2774                         else
2775                                 lpfc_register_new_vport(phba, vport, ndlp);
2776                         mempool_free(mboxq, phba->mbox_mem_pool);
2777                         return;
2778         }
2779
2780         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2781                 lpfc_initial_fdisc(vport);
2782         else {
2783                 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
2784                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2785                                  "2606 No NPIV Fabric support\n");
2786         }
2787         mempool_free(mboxq, phba->mbox_mem_pool);
2788         return;
2789 }
2790
2791 /**
2792  * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
2793  * @vport: pointer to lpfc_vport data structure.
2794  *
2795  * This function issue a init_vpi mailbox command to initialize
2796  * VPI for the vport.
2797  */
2798 void
2799 lpfc_issue_init_vpi(struct lpfc_vport *vport)
2800 {
2801         LPFC_MBOXQ_t *mboxq;
2802         int rc, vpi;
2803
2804         if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) {
2805                 vpi = lpfc_alloc_vpi(vport->phba);
2806                 if (!vpi) {
2807                         lpfc_printf_vlog(vport, KERN_ERR,
2808                                          LOG_MBOX,
2809                                          "3303 Failed to obtain vport vpi\n");
2810                         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2811                         return;
2812                 }
2813                 vport->vpi = vpi;
2814         }
2815
2816         mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
2817         if (!mboxq) {
2818                 lpfc_printf_vlog(vport, KERN_ERR,
2819                         LOG_MBOX, "2607 Failed to allocate "
2820                         "init_vpi mailbox\n");
2821                 return;
2822         }
2823         lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
2824         mboxq->vport = vport;
2825         mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
2826         rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
2827         if (rc == MBX_NOT_FINISHED) {
2828                 lpfc_printf_vlog(vport, KERN_ERR,
2829                         LOG_MBOX, "2608 Failed to issue init_vpi mailbox\n");
2830                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
2831         }
2832 }
2833
2834 /**
2835  * lpfc_start_fdiscs - send fdiscs for each vports on this port.
2836  * @phba: pointer to lpfc hba data structure.
2837  *
2838  * This function loops through the list of vports on the @phba and issues an
2839  * FDISC if possible.
2840  */
2841 void
2842 lpfc_start_fdiscs(struct lpfc_hba *phba)
2843 {
2844         struct lpfc_vport **vports;
2845         int i;
2846
2847         vports = lpfc_create_vport_work_array(phba);
2848         if (vports != NULL) {
2849                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2850                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
2851                                 continue;
2852                         /* There are no vpi for this vport */
2853                         if (vports[i]->vpi > phba->max_vpi) {
2854                                 lpfc_vport_set_state(vports[i],
2855                                                      FC_VPORT_FAILED);
2856                                 continue;
2857                         }
2858                         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
2859                                 lpfc_vport_set_state(vports[i],
2860                                                      FC_VPORT_LINKDOWN);
2861                                 continue;
2862                         }
2863                         if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
2864                                 lpfc_issue_init_vpi(vports[i]);
2865                                 continue;
2866                         }
2867                         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2868                                 lpfc_initial_fdisc(vports[i]);
2869                         else {
2870                                 lpfc_vport_set_state(vports[i],
2871                                                      FC_VPORT_NO_FABRIC_SUPP);
2872                                 lpfc_printf_vlog(vports[i], KERN_ERR,
2873                                                  LOG_ELS,
2874                                                  "0259 No NPIV "
2875                                                  "Fabric support\n");
2876                         }
2877                 }
2878         }
2879         lpfc_destroy_vport_work_array(phba, vports);
2880 }
2881
2882 void
2883 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2884 {
2885         struct lpfc_dmabuf *dmabuf = mboxq->context1;
2886         struct lpfc_vport *vport = mboxq->vport;
2887         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2888
2889         /*
2890          * VFI not supported for interface type 0, so ignore any mailbox
2891          * error (except VFI in use) and continue with the discovery.
2892          */
2893         if (mboxq->u.mb.mbxStatus &&
2894             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
2895                         LPFC_SLI_INTF_IF_TYPE_0) &&
2896             mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
2897                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2898                          "2018 REG_VFI mbxStatus error x%x "
2899                          "HBA state x%x\n",
2900                          mboxq->u.mb.mbxStatus, vport->port_state);
2901                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
2902                         /* FLOGI failed, use loop map to make discovery list */
2903                         lpfc_disc_list_loopmap(vport);
2904                         /* Start discovery */
2905                         lpfc_disc_start(vport);
2906                         goto out_free_mem;
2907                 }
2908                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2909                 goto out_free_mem;
2910         }
2911
2912         /* If the VFI is already registered, there is nothing else to do
2913          * Unless this was a VFI update and we are in PT2PT mode, then
2914          * we should drop through to set the port state to ready.
2915          */
2916         if (vport->fc_flag & FC_VFI_REGISTERED)
2917                 if (!(phba->sli_rev == LPFC_SLI_REV4 &&
2918                       vport->fc_flag & FC_PT2PT))
2919                         goto out_free_mem;
2920
2921         /* The VPI is implicitly registered when the VFI is registered */
2922         spin_lock_irq(shost->host_lock);
2923         vport->vpi_state |= LPFC_VPI_REGISTERED;
2924         vport->fc_flag |= FC_VFI_REGISTERED;
2925         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
2926         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
2927         spin_unlock_irq(shost->host_lock);
2928
2929         /* In case SLI4 FC loopback test, we are ready */
2930         if ((phba->sli_rev == LPFC_SLI_REV4) &&
2931             (phba->link_flag & LS_LOOPBACK_MODE)) {
2932                 phba->link_state = LPFC_HBA_READY;
2933                 goto out_free_mem;
2934         }
2935
2936         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
2937                          "3313 cmpl reg vfi  port_state:%x fc_flag:%x myDid:%x "
2938                          "alpacnt:%d LinkState:%x topology:%x\n",
2939                          vport->port_state, vport->fc_flag, vport->fc_myDID,
2940                          vport->phba->alpa_map[0],
2941                          phba->link_state, phba->fc_topology);
2942
2943         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
2944                 /*
2945                  * For private loop or for NPort pt2pt,
2946                  * just start discovery and we are done.
2947                  */
2948                 if ((vport->fc_flag & FC_PT2PT) ||
2949                     ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) &&
2950                     !(vport->fc_flag & FC_PUBLIC_LOOP))) {
2951
2952                         /* Use loop map to make discovery list */
2953                         lpfc_disc_list_loopmap(vport);
2954                         /* Start discovery */
2955                         if (vport->fc_flag & FC_PT2PT)
2956                                 vport->port_state = LPFC_VPORT_READY;
2957                         else
2958                                 lpfc_disc_start(vport);
2959                 } else {
2960                         lpfc_start_fdiscs(phba);
2961                         lpfc_do_scr_ns_plogi(phba, vport);
2962                 }
2963         }
2964
2965 out_free_mem:
2966         mempool_free(mboxq, phba->mbox_mem_pool);
2967         lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
2968         kfree(dmabuf);
2969         return;
2970 }
2971
2972 static void
2973 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2974 {
2975         MAILBOX_t *mb = &pmb->u.mb;
2976         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
2977         struct lpfc_vport  *vport = pmb->vport;
2978
2979
2980         /* Check for error */
2981         if (mb->mbxStatus) {
2982                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
2983                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2984                                  "0319 READ_SPARAM mbxStatus error x%x "
2985                                  "hba state x%x>\n",
2986                                  mb->mbxStatus, vport->port_state);
2987                 lpfc_linkdown(phba);
2988                 goto out;
2989         }
2990
2991         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
2992                sizeof (struct serv_parm));
2993         lpfc_update_vport_wwn(vport);
2994         if (vport->port_type == LPFC_PHYSICAL_PORT) {
2995                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
2996                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
2997         }
2998
2999         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3000         kfree(mp);
3001         mempool_free(pmb, phba->mbox_mem_pool);
3002         return;
3003
3004 out:
3005         pmb->context1 = NULL;
3006         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3007         kfree(mp);
3008         lpfc_issue_clear_la(phba, vport);
3009         mempool_free(pmb, phba->mbox_mem_pool);
3010         return;
3011 }
3012
3013 static void
3014 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
3015 {
3016         struct lpfc_vport *vport = phba->pport;
3017         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
3018         struct Scsi_Host *shost;
3019         int i;
3020         struct lpfc_dmabuf *mp;
3021         int rc;
3022         struct fcf_record *fcf_record;
3023         uint32_t fc_flags = 0;
3024
3025         spin_lock_irq(&phba->hbalock);
3026         switch (bf_get(lpfc_mbx_read_top_link_spd, la)) {
3027         case LPFC_LINK_SPEED_1GHZ:
3028         case LPFC_LINK_SPEED_2GHZ:
3029         case LPFC_LINK_SPEED_4GHZ:
3030         case LPFC_LINK_SPEED_8GHZ:
3031         case LPFC_LINK_SPEED_10GHZ:
3032         case LPFC_LINK_SPEED_16GHZ:
3033                 phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la);
3034                 break;
3035         default:
3036                 phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN;
3037                 break;
3038         }
3039
3040         if (phba->fc_topology &&
3041             phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) {
3042                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
3043                                 "3314 Toplogy changed was 0x%x is 0x%x\n",
3044                                 phba->fc_topology,
3045                                 bf_get(lpfc_mbx_read_top_topology, la));
3046                 phba->fc_topology_changed = 1;
3047         }
3048
3049         phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la);
3050         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
3051
3052         shost = lpfc_shost_from_vport(vport);
3053         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3054                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
3055
3056                 /* if npiv is enabled and this adapter supports npiv log
3057                  * a message that npiv is not supported in this topology
3058                  */
3059                 if (phba->cfg_enable_npiv && phba->max_vpi)
3060                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3061                                 "1309 Link Up Event npiv not supported in loop "
3062                                 "topology\n");
3063                                 /* Get Loop Map information */
3064                 if (bf_get(lpfc_mbx_read_top_il, la))
3065                         fc_flags |= FC_LBIT;
3066
3067                 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la);
3068                 i = la->lilpBde64.tus.f.bdeSize;
3069
3070                 if (i == 0) {
3071                         phba->alpa_map[0] = 0;
3072                 } else {
3073                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
3074                                 int numalpa, j, k;
3075                                 union {
3076                                         uint8_t pamap[16];
3077                                         struct {
3078                                                 uint32_t wd1;
3079                                                 uint32_t wd2;
3080                                                 uint32_t wd3;
3081                                                 uint32_t wd4;
3082                                         } pa;
3083                                 } un;
3084                                 numalpa = phba->alpa_map[0];
3085                                 j = 0;
3086                                 while (j < numalpa) {
3087                                         memset(un.pamap, 0, 16);
3088                                         for (k = 1; j < numalpa; k++) {
3089                                                 un.pamap[k - 1] =
3090                                                         phba->alpa_map[j + 1];
3091                                                 j++;
3092                                                 if (k == 16)
3093                                                         break;
3094                                         }
3095                                         /* Link Up Event ALPA map */
3096                                         lpfc_printf_log(phba,
3097                                                         KERN_WARNING,
3098                                                         LOG_LINK_EVENT,
3099                                                         "1304 Link Up Event "
3100                                                         "ALPA map Data: x%x "
3101                                                         "x%x x%x x%x\n",
3102                                                         un.pa.wd1, un.pa.wd2,
3103                                                         un.pa.wd3, un.pa.wd4);
3104                                 }
3105                         }
3106                 }
3107         } else {
3108                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
3109                         if (phba->max_vpi && phba->cfg_enable_npiv &&
3110                            (phba->sli_rev >= LPFC_SLI_REV3))
3111                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
3112                 }
3113                 vport->fc_myDID = phba->fc_pref_DID;
3114                 fc_flags |= FC_LBIT;
3115         }
3116         spin_unlock_irq(&phba->hbalock);
3117
3118         if (fc_flags) {
3119                 spin_lock_irq(shost->host_lock);
3120                 vport->fc_flag |= fc_flags;
3121                 spin_unlock_irq(shost->host_lock);
3122         }
3123
3124         lpfc_linkup(phba);
3125         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3126         if (!sparam_mbox)
3127                 goto out;
3128
3129         rc = lpfc_read_sparam(phba, sparam_mbox, 0);
3130         if (rc) {
3131                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3132                 goto out;
3133         }
3134         sparam_mbox->vport = vport;
3135         sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
3136         rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
3137         if (rc == MBX_NOT_FINISHED) {
3138                 mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
3139                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3140                 kfree(mp);
3141                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3142                 goto out;
3143         }
3144
3145         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3146                 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3147                 if (!cfglink_mbox)
3148                         goto out;
3149                 vport->port_state = LPFC_LOCAL_CFG_LINK;
3150                 lpfc_config_link(phba, cfglink_mbox);
3151                 cfglink_mbox->vport = vport;
3152                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
3153                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
3154                 if (rc == MBX_NOT_FINISHED) {
3155                         mempool_free(cfglink_mbox, phba->mbox_mem_pool);
3156                         goto out;
3157                 }
3158         } else {
3159                 vport->port_state = LPFC_VPORT_UNKNOWN;
3160                 /*
3161                  * Add the driver's default FCF record at FCF index 0 now. This
3162                  * is phase 1 implementation that support FCF index 0 and driver
3163                  * defaults.
3164                  */
3165                 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
3166                         fcf_record = kzalloc(sizeof(struct fcf_record),
3167                                         GFP_KERNEL);
3168                         if (unlikely(!fcf_record)) {
3169                                 lpfc_printf_log(phba, KERN_ERR,
3170                                         LOG_MBOX | LOG_SLI,
3171                                         "2554 Could not allocate memory for "
3172                                         "fcf record\n");
3173                                 rc = -ENODEV;
3174                                 goto out;
3175                         }
3176
3177                         lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
3178                                                 LPFC_FCOE_FCF_DEF_INDEX);
3179                         rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
3180                         if (unlikely(rc)) {
3181                                 lpfc_printf_log(phba, KERN_ERR,
3182                                         LOG_MBOX | LOG_SLI,
3183                                         "2013 Could not manually add FCF "
3184                                         "record 0, status %d\n", rc);
3185                                 rc = -ENODEV;
3186                                 kfree(fcf_record);
3187                                 goto out;
3188                         }
3189                         kfree(fcf_record);
3190                 }
3191                 /*
3192                  * The driver is expected to do FIP/FCF. Call the port
3193                  * and get the FCF Table.
3194                  */
3195                 spin_lock_irq(&phba->hbalock);
3196                 if (phba->hba_flag & FCF_TS_INPROG) {
3197                         spin_unlock_irq(&phba->hbalock);
3198                         return;
3199                 }
3200                 /* This is the initial FCF discovery scan */
3201                 phba->fcf.fcf_flag |= FCF_INIT_DISC;
3202                 spin_unlock_irq(&phba->hbalock);
3203                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3204                                 "2778 Start FCF table scan at linkup\n");
3205                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
3206                                                      LPFC_FCOE_FCF_GET_FIRST);
3207                 if (rc) {
3208                         spin_lock_irq(&phba->hbalock);
3209                         phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
3210                         spin_unlock_irq(&phba->hbalock);
3211                         goto out;
3212                 }
3213                 /* Reset FCF roundrobin bmask for new discovery */
3214                 lpfc_sli4_clear_fcf_rr_bmask(phba);
3215         }
3216
3217         return;
3218 out:
3219         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3220         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
3221                          "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
3222                          vport->port_state, sparam_mbox, cfglink_mbox);
3223         lpfc_issue_clear_la(phba, vport);
3224         return;
3225 }
3226
3227 static void
3228 lpfc_enable_la(struct lpfc_hba *phba)
3229 {
3230         uint32_t control;
3231         struct lpfc_sli *psli = &phba->sli;
3232         spin_lock_irq(&phba->hbalock);
3233         psli->sli_flag |= LPFC_PROCESS_LA;
3234         if (phba->sli_rev <= LPFC_SLI_REV3) {
3235                 control = readl(phba->HCregaddr);
3236                 control |= HC_LAINT_ENA;
3237                 writel(control, phba->HCregaddr);
3238                 readl(phba->HCregaddr); /* flush */
3239         }
3240         spin_unlock_irq(&phba->hbalock);
3241 }
3242
3243 static void
3244 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
3245 {
3246         lpfc_linkdown(phba);
3247         lpfc_enable_la(phba);
3248         lpfc_unregister_unused_fcf(phba);
3249         /* turn on Link Attention interrupts - no CLEAR_LA needed */
3250 }
3251
3252
3253 /*
3254  * This routine handles processing a READ_TOPOLOGY mailbox
3255  * command upon completion. It is setup in the LPFC_MBOXQ
3256  * as the completion routine when the command is
3257  * handed off to the SLI layer.
3258  */
3259 void
3260 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3261 {
3262         struct lpfc_vport *vport = pmb->vport;
3263         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3264         struct lpfc_mbx_read_top *la;
3265         MAILBOX_t *mb = &pmb->u.mb;
3266         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3267
3268         /* Unblock ELS traffic */
3269         phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
3270         /* Check for error */
3271         if (mb->mbxStatus) {
3272                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3273                                 "1307 READ_LA mbox error x%x state x%x\n",
3274                                 mb->mbxStatus, vport->port_state);
3275                 lpfc_mbx_issue_link_down(phba);
3276                 phba->link_state = LPFC_HBA_ERROR;
3277                 goto lpfc_mbx_cmpl_read_topology_free_mbuf;
3278         }
3279
3280         la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
3281
3282         memcpy(&phba->alpa_map[0], mp->virt, 128);
3283
3284         spin_lock_irq(shost->host_lock);
3285         if (bf_get(lpfc_mbx_read_top_pb, la))
3286                 vport->fc_flag |= FC_BYPASSED_MODE;
3287         else
3288                 vport->fc_flag &= ~FC_BYPASSED_MODE;
3289         spin_unlock_irq(shost->host_lock);
3290
3291         if (phba->fc_eventTag <= la->eventTag) {
3292                 phba->fc_stat.LinkMultiEvent++;
3293                 if (bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP)
3294                         if (phba->fc_eventTag != 0)
3295                                 lpfc_linkdown(phba);
3296         }
3297
3298         phba->fc_eventTag = la->eventTag;
3299         if (phba->sli_rev < LPFC_SLI_REV4) {
3300                 spin_lock_irq(&phba->hbalock);
3301                 if (bf_get(lpfc_mbx_read_top_mm, la))
3302                         phba->sli.sli_flag |= LPFC_MENLO_MAINT;
3303                 else
3304                         phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
3305                 spin_unlock_irq(&phba->hbalock);
3306         }
3307
3308         phba->link_events++;
3309         if ((bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP) &&
3310             !(phba->sli.sli_flag & LPFC_MENLO_MAINT)) {
3311                 phba->fc_stat.LinkUp++;
3312                 if (phba->link_flag & LS_LOOPBACK_MODE) {
3313                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3314                                         "1306 Link Up Event in loop back mode "
3315                                         "x%x received Data: x%x x%x x%x x%x\n",
3316                                         la->eventTag, phba->fc_eventTag,
3317                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3318                                                la),
3319                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3320                                         phba->alpa_map[0]);
3321                 } else {
3322                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3323                                         "1303 Link Up Event x%x received "
3324                                         "Data: x%x x%x x%x x%x x%x x%x %d\n",
3325                                         la->eventTag, phba->fc_eventTag,
3326                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3327                                                la),
3328                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3329                                         phba->alpa_map[0],
3330                                         bf_get(lpfc_mbx_read_top_mm, la),
3331                                         bf_get(lpfc_mbx_read_top_fa, la),
3332                                         phba->wait_4_mlo_maint_flg);
3333                 }
3334                 lpfc_mbx_process_link_up(phba, la);
3335         } else if (bf_get(lpfc_mbx_read_top_att_type, la) ==
3336                    LPFC_ATT_LINK_DOWN) {
3337                 phba->fc_stat.LinkDown++;
3338                 if (phba->link_flag & LS_LOOPBACK_MODE)
3339                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3340                                 "1308 Link Down Event in loop back mode "
3341                                 "x%x received "
3342                                 "Data: x%x x%x x%x\n",
3343                                 la->eventTag, phba->fc_eventTag,
3344                                 phba->pport->port_state, vport->fc_flag);
3345                 else
3346                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3347                                 "1305 Link Down Event x%x received "
3348                                 "Data: x%x x%x x%x x%x x%x\n",
3349                                 la->eventTag, phba->fc_eventTag,
3350                                 phba->pport->port_state, vport->fc_flag,
3351                                 bf_get(lpfc_mbx_read_top_mm, la),
3352                                 bf_get(lpfc_mbx_read_top_fa, la));
3353                 lpfc_mbx_issue_link_down(phba);
3354         }
3355         if ((phba->sli.sli_flag & LPFC_MENLO_MAINT) &&
3356             ((bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP))) {
3357                 if (phba->link_state != LPFC_LINK_DOWN) {
3358                         phba->fc_stat.LinkDown++;
3359                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3360                                 "1312 Link Down Event x%x received "
3361                                 "Data: x%x x%x x%x\n",
3362                                 la->eventTag, phba->fc_eventTag,
3363                                 phba->pport->port_state, vport->fc_flag);
3364                         lpfc_mbx_issue_link_down(phba);
3365                 } else
3366                         lpfc_enable_la(phba);
3367
3368                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3369                                 "1310 Menlo Maint Mode Link up Event x%x rcvd "
3370                                 "Data: x%x x%x x%x\n",
3371                                 la->eventTag, phba->fc_eventTag,
3372                                 phba->pport->port_state, vport->fc_flag);
3373                 /*
3374                  * The cmnd that triggered this will be waiting for this
3375                  * signal.
3376                  */
3377                 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
3378                 if (phba->wait_4_mlo_maint_flg) {
3379                         phba->wait_4_mlo_maint_flg = 0;
3380                         wake_up_interruptible(&phba->wait_4_mlo_m_q);
3381                 }
3382         }
3383
3384         if ((phba->sli_rev < LPFC_SLI_REV4) &&
3385             bf_get(lpfc_mbx_read_top_fa, la)) {
3386                 if (phba->sli.sli_flag & LPFC_MENLO_MAINT)
3387                         lpfc_issue_clear_la(phba, vport);
3388                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3389                                 "1311 fa %d\n",
3390                                 bf_get(lpfc_mbx_read_top_fa, la));
3391         }
3392
3393 lpfc_mbx_cmpl_read_topology_free_mbuf:
3394         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3395         kfree(mp);
3396         mempool_free(pmb, phba->mbox_mem_pool);
3397         return;
3398 }
3399
3400 /*
3401  * This routine handles processing a REG_LOGIN mailbox
3402  * command upon completion. It is setup in the LPFC_MBOXQ
3403  * as the completion routine when the command is
3404  * handed off to the SLI layer.
3405  */
3406 void
3407 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3408 {
3409         struct lpfc_vport  *vport = pmb->vport;
3410         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3411         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3412         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3413
3414         pmb->context1 = NULL;
3415         pmb->context2 = NULL;
3416
3417         if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
3418                 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
3419
3420         if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL ||
3421             ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
3422                 /* We rcvd a rscn after issuing this
3423                  * mbox reg login, we may have cycled
3424                  * back through the state and be
3425                  * back at reg login state so this
3426                  * mbox needs to be ignored becase
3427                  * there is another reg login in
3428                  * process.
3429                  */
3430                 spin_lock_irq(shost->host_lock);
3431                 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
3432                 spin_unlock_irq(shost->host_lock);
3433         } else
3434                 /* Good status, call state machine */
3435                 lpfc_disc_state_machine(vport, ndlp, pmb,
3436                                 NLP_EVT_CMPL_REG_LOGIN);
3437
3438         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3439         kfree(mp);
3440         mempool_free(pmb, phba->mbox_mem_pool);
3441         /* decrement the node reference count held for this callback
3442          * function.
3443          */
3444         lpfc_nlp_put(ndlp);
3445
3446         return;
3447 }
3448
3449 static void
3450 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3451 {
3452         MAILBOX_t *mb = &pmb->u.mb;
3453         struct lpfc_vport *vport = pmb->vport;
3454         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3455
3456         switch (mb->mbxStatus) {
3457         case 0x0011:
3458         case 0x0020:
3459                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3460                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
3461                                  mb->mbxStatus);
3462                 break;
3463         /* If VPI is busy, reset the HBA */
3464         case 0x9700:
3465                 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3466                         "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n",
3467                         vport->vpi, mb->mbxStatus);
3468                 if (!(phba->pport->load_flag & FC_UNLOADING))
3469                         lpfc_workq_post_event(phba, NULL, NULL,
3470                                 LPFC_EVT_RESET_HBA);
3471         }
3472         spin_lock_irq(shost->host_lock);
3473         vport->vpi_state &= ~LPFC_VPI_REGISTERED;
3474         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3475         spin_unlock_irq(shost->host_lock);
3476         vport->unreg_vpi_cmpl = VPORT_OK;
3477         mempool_free(pmb, phba->mbox_mem_pool);
3478         lpfc_cleanup_vports_rrqs(vport, NULL);
3479         /*
3480          * This shost reference might have been taken at the beginning of
3481          * lpfc_vport_delete()
3482          */
3483         if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
3484                 scsi_host_put(shost);
3485 }
3486
3487 int
3488 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
3489 {
3490         struct lpfc_hba  *phba = vport->phba;
3491         LPFC_MBOXQ_t *mbox;
3492         int rc;
3493
3494         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3495         if (!mbox)
3496                 return 1;
3497
3498         lpfc_unreg_vpi(phba, vport->vpi, mbox);
3499         mbox->vport = vport;
3500         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
3501         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3502         if (rc == MBX_NOT_FINISHED) {
3503                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
3504                                  "1800 Could not issue unreg_vpi\n");
3505                 mempool_free(mbox, phba->mbox_mem_pool);
3506                 vport->unreg_vpi_cmpl = VPORT_ERROR;
3507                 return rc;
3508         }
3509         return 0;
3510 }
3511
3512 static void
3513 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3514 {
3515         struct lpfc_vport *vport = pmb->vport;
3516         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3517         MAILBOX_t *mb = &pmb->u.mb;
3518
3519         switch (mb->mbxStatus) {
3520         case 0x0011:
3521         case 0x9601:
3522         case 0x9602:
3523                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3524                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
3525                                  mb->mbxStatus);
3526                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3527                 spin_lock_irq(shost->host_lock);
3528                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
3529                 spin_unlock_irq(shost->host_lock);
3530                 vport->fc_myDID = 0;
3531                 goto out;
3532         }
3533
3534         spin_lock_irq(shost->host_lock);
3535         vport->vpi_state |= LPFC_VPI_REGISTERED;
3536         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3537         spin_unlock_irq(shost->host_lock);
3538         vport->num_disc_nodes = 0;
3539         /* go thru NPR list and issue ELS PLOGIs */
3540         if (vport->fc_npr_cnt)
3541                 lpfc_els_disc_plogi(vport);
3542
3543         if (!vport->num_disc_nodes) {
3544                 spin_lock_irq(shost->host_lock);
3545                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
3546                 spin_unlock_irq(shost->host_lock);
3547                 lpfc_can_disctmo(vport);
3548         }
3549         vport->port_state = LPFC_VPORT_READY;
3550
3551 out:
3552         mempool_free(pmb, phba->mbox_mem_pool);
3553         return;
3554 }
3555
3556 /**
3557  * lpfc_create_static_vport - Read HBA config region to create static vports.
3558  * @phba: pointer to lpfc hba data structure.
3559  *
3560  * This routine issue a DUMP mailbox command for config region 22 to get
3561  * the list of static vports to be created. The function create vports
3562  * based on the information returned from the HBA.
3563  **/
3564 void
3565 lpfc_create_static_vport(struct lpfc_hba *phba)
3566 {
3567         LPFC_MBOXQ_t *pmb = NULL;
3568         MAILBOX_t *mb;
3569         struct static_vport_info *vport_info;
3570         int mbx_wait_rc = 0, i;
3571         struct fc_vport_identifiers vport_id;
3572         struct fc_vport *new_fc_vport;
3573         struct Scsi_Host *shost;
3574         struct lpfc_vport *vport;
3575         uint16_t offset = 0;
3576         uint8_t *vport_buff;
3577         struct lpfc_dmabuf *mp;
3578         uint32_t byte_count = 0;
3579
3580         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3581         if (!pmb) {
3582                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3583                                 "0542 lpfc_create_static_vport failed to"
3584                                 " allocate mailbox memory\n");
3585                 return;
3586         }
3587         memset(pmb, 0, sizeof(LPFC_MBOXQ_t));
3588         mb = &pmb->u.mb;
3589
3590         vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
3591         if (!vport_info) {
3592                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3593                                 "0543 lpfc_create_static_vport failed to"
3594                                 " allocate vport_info\n");
3595                 mempool_free(pmb, phba->mbox_mem_pool);
3596                 return;
3597         }
3598
3599         vport_buff = (uint8_t *) vport_info;
3600         do {
3601                 /* free dma buffer from previous round */
3602                 if (pmb->context1) {
3603                         mp = (struct lpfc_dmabuf *)pmb->context1;
3604                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3605                         kfree(mp);
3606                 }
3607                 if (lpfc_dump_static_vport(phba, pmb, offset))
3608                         goto out;
3609
3610                 pmb->vport = phba->pport;
3611                 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb,
3612                                                         LPFC_MBOX_TMO);
3613
3614                 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) {
3615                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3616                                 "0544 lpfc_create_static_vport failed to"
3617                                 " issue dump mailbox command ret 0x%x "
3618                                 "status 0x%x\n",
3619                                 mbx_wait_rc, mb->mbxStatus);
3620                         goto out;
3621                 }
3622
3623                 if (phba->sli_rev == LPFC_SLI_REV4) {
3624                         byte_count = pmb->u.mqe.un.mb_words[5];
3625                         mp = (struct lpfc_dmabuf *)pmb->context1;
3626                         if (byte_count > sizeof(struct static_vport_info) -
3627                                         offset)
3628                                 byte_count = sizeof(struct static_vport_info)
3629                                         - offset;
3630                         memcpy(vport_buff + offset, mp->virt, byte_count);
3631                         offset += byte_count;
3632                 } else {
3633                         if (mb->un.varDmp.word_cnt >
3634                                 sizeof(struct static_vport_info) - offset)
3635                                 mb->un.varDmp.word_cnt =
3636                                         sizeof(struct static_vport_info)
3637                                                 - offset;
3638                         byte_count = mb->un.varDmp.word_cnt;
3639                         lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
3640                                 vport_buff + offset,
3641                                 byte_count);
3642
3643                         offset += byte_count;
3644                 }
3645
3646         } while (byte_count &&
3647                 offset < sizeof(struct static_vport_info));
3648
3649
3650         if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
3651                 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
3652                         != VPORT_INFO_REV)) {
3653                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3654                         "0545 lpfc_create_static_vport bad"
3655                         " information header 0x%x 0x%x\n",
3656                         le32_to_cpu(vport_info->signature),
3657                         le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK);
3658
3659                 goto out;
3660         }
3661
3662         shost = lpfc_shost_from_vport(phba->pport);
3663
3664         for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
3665                 memset(&vport_id, 0, sizeof(vport_id));
3666                 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
3667                 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
3668                 if (!vport_id.port_name || !vport_id.node_name)
3669                         continue;
3670
3671                 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
3672                 vport_id.vport_type = FC_PORTTYPE_NPIV;
3673                 vport_id.disable = false;
3674                 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
3675
3676                 if (!new_fc_vport) {
3677                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3678                                 "0546 lpfc_create_static_vport failed to"
3679                                 " create vport\n");
3680                         continue;
3681                 }
3682
3683                 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
3684                 vport->vport_flag |= STATIC_VPORT;
3685         }
3686
3687 out:
3688         kfree(vport_info);
3689         if (mbx_wait_rc != MBX_TIMEOUT) {
3690                 if (pmb->context1) {
3691                         mp = (struct lpfc_dmabuf *)pmb->context1;
3692                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3693                         kfree(mp);
3694                 }
3695                 mempool_free(pmb, phba->mbox_mem_pool);
3696         }
3697
3698         return;
3699 }
3700
3701 /*
3702  * This routine handles processing a Fabric REG_LOGIN mailbox
3703  * command upon completion. It is setup in the LPFC_MBOXQ
3704  * as the completion routine when the command is
3705  * handed off to the SLI layer.
3706  */
3707 void
3708 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3709 {
3710         struct lpfc_vport *vport = pmb->vport;
3711         MAILBOX_t *mb = &pmb->u.mb;
3712         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3713         struct lpfc_nodelist *ndlp;
3714         struct Scsi_Host *shost;
3715
3716         ndlp = (struct lpfc_nodelist *) pmb->context2;
3717         pmb->context1 = NULL;
3718         pmb->context2 = NULL;
3719
3720         if (mb->mbxStatus) {
3721                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
3722                                  "0258 Register Fabric login error: 0x%x\n",
3723                                  mb->mbxStatus);
3724                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3725                 kfree(mp);
3726                 mempool_free(pmb, phba->mbox_mem_pool);
3727
3728                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3729                         /* FLOGI failed, use loop map to make discovery list */
3730                         lpfc_disc_list_loopmap(vport);
3731
3732                         /* Start discovery */
3733                         lpfc_disc_start(vport);
3734                         /* Decrement the reference count to ndlp after the
3735                          * reference to the ndlp are done.
3736                          */
3737                         lpfc_nlp_put(ndlp);
3738                         return;
3739                 }
3740
3741                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3742                 /* Decrement the reference count to ndlp after the reference
3743                  * to the ndlp are done.
3744                  */
3745                 lpfc_nlp_put(ndlp);
3746                 return;
3747         }
3748
3749         if (phba->sli_rev < LPFC_SLI_REV4)
3750                 ndlp->nlp_rpi = mb->un.varWords[0];
3751         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3752         ndlp->nlp_type |= NLP_FABRIC;
3753         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3754
3755         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3756                 /* when physical port receive logo donot start
3757                  * vport discovery */
3758                 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
3759                         lpfc_start_fdiscs(phba);
3760                 else {
3761                         shost = lpfc_shost_from_vport(vport);
3762                         spin_lock_irq(shost->host_lock);
3763                         vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ;
3764                         spin_unlock_irq(shost->host_lock);
3765                 }
3766                 lpfc_do_scr_ns_plogi(phba, vport);
3767         }
3768
3769         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3770         kfree(mp);
3771         mempool_free(pmb, phba->mbox_mem_pool);
3772
3773         /* Drop the reference count from the mbox at the end after
3774          * all the current reference to the ndlp have been done.
3775          */
3776         lpfc_nlp_put(ndlp);
3777         return;
3778 }
3779
3780 /*
3781  * This routine handles processing a NameServer REG_LOGIN mailbox
3782  * command upon completion. It is setup in the LPFC_MBOXQ
3783  * as the completion routine when the command is
3784  * handed off to the SLI layer.
3785  */
3786 void
3787 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3788 {
3789         MAILBOX_t *mb = &pmb->u.mb;
3790         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3791         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3792         struct lpfc_vport *vport = pmb->vport;
3793
3794         pmb->context1 = NULL;
3795         pmb->context2 = NULL;
3796
3797         if (mb->mbxStatus) {
3798 out:
3799                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3800                                  "0260 Register NameServer error: 0x%x\n",
3801                                  mb->mbxStatus);
3802                 /* decrement the node reference count held for this
3803                  * callback function.
3804                  */
3805                 lpfc_nlp_put(ndlp);
3806                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3807                 kfree(mp);
3808                 mempool_free(pmb, phba->mbox_mem_pool);
3809
3810                 /* If no other thread is using the ndlp, free it */
3811                 lpfc_nlp_not_used(ndlp);
3812
3813                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3814                         /*
3815                          * RegLogin failed, use loop map to make discovery
3816                          * list
3817                          */
3818                         lpfc_disc_list_loopmap(vport);
3819
3820                         /* Start discovery */
3821                         lpfc_disc_start(vport);
3822                         return;
3823                 }
3824                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3825                 return;
3826         }
3827
3828         if (phba->sli_rev < LPFC_SLI_REV4)
3829                 ndlp->nlp_rpi = mb->un.varWords[0];
3830         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3831         ndlp->nlp_type |= NLP_FABRIC;
3832         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3833
3834         if (vport->port_state < LPFC_VPORT_READY) {
3835                 /* Link up discovery requires Fabric registration. */
3836                 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
3837                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
3838                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
3839                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
3840                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
3841
3842                 /* Issue SCR just before NameServer GID_FT Query */
3843                 lpfc_issue_els_scr(vport, SCR_DID, 0);
3844         }
3845
3846         vport->fc_ns_retry = 0;
3847         /* Good status, issue CT Request to NameServer */
3848         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
3849                 /* Cannot issue NameServer Query, so finish up discovery */
3850                 goto out;
3851         }
3852
3853         /* decrement the node reference count held for this
3854          * callback function.
3855          */
3856         lpfc_nlp_put(ndlp);
3857         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3858         kfree(mp);
3859         mempool_free(pmb, phba->mbox_mem_pool);
3860
3861         return;
3862 }
3863
3864 static void
3865 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3866 {
3867         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3868         struct fc_rport  *rport;
3869         struct lpfc_rport_data *rdata;
3870         struct fc_rport_identifiers rport_ids;
3871         struct lpfc_hba  *phba = vport->phba;
3872
3873         /* Remote port has reappeared. Re-register w/ FC transport */
3874         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
3875         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
3876         rport_ids.port_id = ndlp->nlp_DID;
3877         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
3878
3879         /*
3880          * We leave our node pointer in rport->dd_data when we unregister a
3881          * FCP target port.  But fc_remote_port_add zeros the space to which
3882          * rport->dd_data points.  So, if we're reusing a previously
3883          * registered port, drop the reference that we took the last time we
3884          * registered the port.
3885          */
3886         if (ndlp->rport && ndlp->rport->dd_data &&
3887             ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
3888                 lpfc_nlp_put(ndlp);
3889
3890         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
3891                 "rport add:       did:x%x flg:x%x type x%x",
3892                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3893
3894         /* Don't add the remote port if unloading. */
3895         if (vport->load_flag & FC_UNLOADING)
3896                 return;
3897
3898         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
3899         if (!rport || !get_device(&rport->dev)) {
3900                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
3901                            "Warning: fc_remote_port_add failed\n");
3902                 return;
3903         }
3904
3905         /* initialize static port data */
3906         rport->maxframe_size = ndlp->nlp_maxframe;
3907         rport->supported_classes = ndlp->nlp_class_sup;
3908         rdata = rport->dd_data;
3909         rdata->pnode = lpfc_nlp_get(ndlp);
3910
3911         if (ndlp->nlp_type & NLP_FCP_TARGET)
3912                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
3913         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
3914                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
3915
3916         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
3917                 fc_remote_port_rolechg(rport, rport_ids.roles);
3918
3919         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
3920                          "3183 rport register x%06x, rport %p role x%x\n",
3921                          ndlp->nlp_DID, rport, rport_ids.roles);
3922
3923         if ((rport->scsi_target_id != -1) &&
3924             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
3925                 ndlp->nlp_sid = rport->scsi_target_id;
3926         }
3927         return;
3928 }
3929
3930 static void
3931 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
3932 {
3933         struct fc_rport *rport = ndlp->rport;
3934
3935         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
3936                 "rport delete:    did:x%x flg:x%x type x%x",
3937                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3938
3939         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
3940                          "3184 rport unregister x%06x, rport %p\n",
3941                          ndlp->nlp_DID, rport);
3942
3943         fc_remote_port_delete(rport);
3944
3945         return;
3946 }
3947
3948 static void
3949 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
3950 {
3951         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3952
3953         spin_lock_irq(shost->host_lock);
3954         switch (state) {
3955         case NLP_STE_UNUSED_NODE:
3956                 vport->fc_unused_cnt += count;
3957                 break;
3958         case NLP_STE_PLOGI_ISSUE:
3959                 vport->fc_plogi_cnt += count;
3960                 break;
3961         case NLP_STE_ADISC_ISSUE:
3962                 vport->fc_adisc_cnt += count;
3963                 break;
3964         case NLP_STE_REG_LOGIN_ISSUE:
3965                 vport->fc_reglogin_cnt += count;
3966                 break;
3967         case NLP_STE_PRLI_ISSUE:
3968                 vport->fc_prli_cnt += count;
3969                 break;
3970         case NLP_STE_UNMAPPED_NODE:
3971                 vport->fc_unmap_cnt += count;
3972                 break;
3973         case NLP_STE_MAPPED_NODE:
3974                 vport->fc_map_cnt += count;
3975                 break;
3976         case NLP_STE_NPR_NODE:
3977                 if (vport->fc_npr_cnt == 0 && count == -1)
3978                         vport->fc_npr_cnt = 0;
3979                 else
3980                         vport->fc_npr_cnt += count;
3981                 break;
3982         }
3983         spin_unlock_irq(shost->host_lock);
3984 }
3985
3986 static void
3987 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3988                        int old_state, int new_state)
3989 {
3990         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3991
3992         if (new_state == NLP_STE_UNMAPPED_NODE) {
3993                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
3994                 ndlp->nlp_type |= NLP_FC_NODE;
3995         }
3996         if (new_state == NLP_STE_MAPPED_NODE)
3997                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
3998         if (new_state == NLP_STE_NPR_NODE)
3999                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
4000
4001         /* Transport interface */
4002         if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
4003                             old_state == NLP_STE_UNMAPPED_NODE)) {
4004                 vport->phba->nport_event_cnt++;
4005                 lpfc_unregister_remote_port(ndlp);
4006         }
4007
4008         if (new_state ==  NLP_STE_MAPPED_NODE ||
4009             new_state == NLP_STE_UNMAPPED_NODE) {
4010                 vport->phba->nport_event_cnt++;
4011                 /*
4012                  * Tell the fc transport about the port, if we haven't
4013                  * already. If we have, and it's a scsi entity, be
4014                  * sure to unblock any attached scsi devices
4015                  */
4016                 lpfc_register_remote_port(vport, ndlp);
4017         }
4018         if ((new_state ==  NLP_STE_MAPPED_NODE) &&
4019                 (vport->stat_data_enabled)) {
4020                 /*
4021                  * A new target is discovered, if there is no buffer for
4022                  * statistical data collection allocate buffer.
4023                  */
4024                 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
4025                                          sizeof(struct lpfc_scsicmd_bkt),
4026                                          GFP_KERNEL);
4027
4028                 if (!ndlp->lat_data)
4029                         lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
4030                                 "0286 lpfc_nlp_state_cleanup failed to "
4031                                 "allocate statistical data buffer DID "
4032                                 "0x%x\n", ndlp->nlp_DID);
4033         }
4034         /*
4035          * if we added to Mapped list, but the remote port
4036          * registration failed or assigned a target id outside
4037          * our presentable range - move the node to the
4038          * Unmapped List
4039          */
4040         if (new_state == NLP_STE_MAPPED_NODE &&
4041             (!ndlp->rport ||
4042              ndlp->rport->scsi_target_id == -1 ||
4043              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
4044                 spin_lock_irq(shost->host_lock);
4045                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
4046                 spin_unlock_irq(shost->host_lock);
4047                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4048         }
4049 }
4050
4051 static char *
4052 lpfc_nlp_state_name(char *buffer, size_t size, int state)
4053 {
4054         static char *states[] = {
4055                 [NLP_STE_UNUSED_NODE] = "UNUSED",
4056                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
4057                 [NLP_STE_ADISC_ISSUE] = "ADISC",
4058                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
4059                 [NLP_STE_PRLI_ISSUE] = "PRLI",
4060                 [NLP_STE_LOGO_ISSUE] = "LOGO",
4061                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
4062                 [NLP_STE_MAPPED_NODE] = "MAPPED",
4063                 [NLP_STE_NPR_NODE] = "NPR",
4064         };
4065
4066         if (state < NLP_STE_MAX_STATE && states[state])
4067                 strlcpy(buffer, states[state], size);
4068         else
4069                 snprintf(buffer, size, "unknown (%d)", state);
4070         return buffer;
4071 }
4072
4073 void
4074 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4075                    int state)
4076 {
4077         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4078         int  old_state = ndlp->nlp_state;
4079         char name1[16], name2[16];
4080
4081         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4082                          "0904 NPort state transition x%06x, %s -> %s\n",
4083                          ndlp->nlp_DID,
4084                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
4085                          lpfc_nlp_state_name(name2, sizeof(name2), state));
4086
4087         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4088                 "node statechg    did:x%x old:%d ste:%d",
4089                 ndlp->nlp_DID, old_state, state);
4090
4091         if (old_state == NLP_STE_NPR_NODE &&
4092             state != NLP_STE_NPR_NODE)
4093                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4094         if (old_state == NLP_STE_UNMAPPED_NODE) {
4095                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
4096                 ndlp->nlp_type &= ~NLP_FC_NODE;
4097         }
4098
4099         if (list_empty(&ndlp->nlp_listp)) {
4100                 spin_lock_irq(shost->host_lock);
4101                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4102                 spin_unlock_irq(shost->host_lock);
4103         } else if (old_state)
4104                 lpfc_nlp_counters(vport, old_state, -1);
4105
4106         ndlp->nlp_state = state;
4107         lpfc_nlp_counters(vport, state, 1);
4108         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
4109 }
4110
4111 void
4112 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4113 {
4114         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4115
4116         if (list_empty(&ndlp->nlp_listp)) {
4117                 spin_lock_irq(shost->host_lock);
4118                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4119                 spin_unlock_irq(shost->host_lock);
4120         }
4121 }
4122
4123 void
4124 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4125 {
4126         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4127
4128         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4129         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4130                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4131         spin_lock_irq(shost->host_lock);
4132         list_del_init(&ndlp->nlp_listp);
4133         spin_unlock_irq(shost->host_lock);
4134         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4135                                 NLP_STE_UNUSED_NODE);
4136 }
4137
4138 static void
4139 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4140 {
4141         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4142         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4143                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4144         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4145                                 NLP_STE_UNUSED_NODE);
4146 }
4147 /**
4148  * lpfc_initialize_node - Initialize all fields of node object
4149  * @vport: Pointer to Virtual Port object.
4150  * @ndlp: Pointer to FC node object.
4151  * @did: FC_ID of the node.
4152  *
4153  * This function is always called when node object need to be initialized.
4154  * It initializes all the fields of the node object. Although the reference
4155  * to phba from @ndlp can be obtained indirectly through it's reference to
4156  * @vport, a direct reference to phba is taken here by @ndlp. This is due
4157  * to the life-span of the @ndlp might go beyond the existence of @vport as
4158  * the final release of ndlp is determined by its reference count. And, the
4159  * operation on @ndlp needs the reference to phba.
4160  **/
4161 static inline void
4162 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4163         uint32_t did)
4164 {
4165         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
4166         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
4167         init_timer(&ndlp->nlp_delayfunc);
4168         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
4169         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
4170         ndlp->nlp_DID = did;
4171         ndlp->vport = vport;
4172         ndlp->phba = vport->phba;
4173         ndlp->nlp_sid = NLP_NO_SID;
4174         kref_init(&ndlp->kref);
4175         NLP_INT_NODE_ACT(ndlp);
4176         atomic_set(&ndlp->cmd_pending, 0);
4177         ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
4178 }
4179
4180 struct lpfc_nodelist *
4181 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4182                  int state)
4183 {
4184         struct lpfc_hba *phba = vport->phba;
4185         uint32_t did;
4186         unsigned long flags;
4187         unsigned long *active_rrqs_xri_bitmap = NULL;
4188
4189         if (!ndlp)
4190                 return NULL;
4191
4192         spin_lock_irqsave(&phba->ndlp_lock, flags);
4193         /* The ndlp should not be in memory free mode */
4194         if (NLP_CHK_FREE_REQ(ndlp)) {
4195                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4196                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4197                                 "0277 lpfc_enable_node: ndlp:x%p "
4198                                 "usgmap:x%x refcnt:%d\n",
4199                                 (void *)ndlp, ndlp->nlp_usg_map,
4200                                 atomic_read(&ndlp->kref.refcount));
4201                 return NULL;
4202         }
4203         /* The ndlp should not already be in active mode */
4204         if (NLP_CHK_NODE_ACT(ndlp)) {
4205                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4206                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4207                                 "0278 lpfc_enable_node: ndlp:x%p "
4208                                 "usgmap:x%x refcnt:%d\n",
4209                                 (void *)ndlp, ndlp->nlp_usg_map,
4210                                 atomic_read(&ndlp->kref.refcount));
4211                 return NULL;
4212         }
4213
4214         /* Keep the original DID */
4215         did = ndlp->nlp_DID;
4216         if (phba->sli_rev == LPFC_SLI_REV4)
4217                 active_rrqs_xri_bitmap = ndlp->active_rrqs_xri_bitmap;
4218
4219         /* re-initialize ndlp except of ndlp linked list pointer */
4220         memset((((char *)ndlp) + sizeof (struct list_head)), 0,
4221                 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
4222         lpfc_initialize_node(vport, ndlp, did);
4223
4224         if (phba->sli_rev == LPFC_SLI_REV4)
4225                 ndlp->active_rrqs_xri_bitmap = active_rrqs_xri_bitmap;
4226
4227         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4228         if (vport->phba->sli_rev == LPFC_SLI_REV4)
4229                 ndlp->nlp_rpi = lpfc_sli4_alloc_rpi(vport->phba);
4230
4231
4232         if (state != NLP_STE_UNUSED_NODE)
4233                 lpfc_nlp_set_state(vport, ndlp, state);
4234
4235         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4236                 "node enable:       did:x%x",
4237                 ndlp->nlp_DID, 0, 0);
4238         return ndlp;
4239 }
4240
4241 void
4242 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4243 {
4244         /*
4245          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
4246          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
4247          * the ndlp from the vport. The ndlp marked as UNUSED on the list
4248          * until ALL other outstanding threads have completed. We check
4249          * that the ndlp not already in the UNUSED state before we proceed.
4250          */
4251         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
4252                 return;
4253         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
4254         if (vport->phba->sli_rev == LPFC_SLI_REV4)
4255                 lpfc_cleanup_vports_rrqs(vport, ndlp);
4256         lpfc_nlp_put(ndlp);
4257         return;
4258 }
4259
4260 /*
4261  * Start / ReStart rescue timer for Discovery / RSCN handling
4262  */
4263 void
4264 lpfc_set_disctmo(struct lpfc_vport *vport)
4265 {
4266         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4267         struct lpfc_hba  *phba = vport->phba;
4268         uint32_t tmo;
4269
4270         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
4271                 /* For FAN, timeout should be greater than edtov */
4272                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
4273         } else {
4274                 /* Normal discovery timeout should be > than ELS/CT timeout
4275                  * FC spec states we need 3 * ratov for CT requests
4276                  */
4277                 tmo = ((phba->fc_ratov * 3) + 3);
4278         }
4279
4280
4281         if (!timer_pending(&vport->fc_disctmo)) {
4282                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4283                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
4284                         tmo, vport->port_state, vport->fc_flag);
4285         }
4286
4287         mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo));
4288         spin_lock_irq(shost->host_lock);
4289         vport->fc_flag |= FC_DISC_TMO;
4290         spin_unlock_irq(shost->host_lock);
4291
4292         /* Start Discovery Timer state <hba_state> */
4293         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4294                          "0247 Start Discovery Timer state x%x "
4295                          "Data: x%x x%lx x%x x%x\n",
4296                          vport->port_state, tmo,
4297                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
4298                          vport->fc_adisc_cnt);
4299
4300         return;
4301 }
4302
4303 /*
4304  * Cancel rescue timer for Discovery / RSCN handling
4305  */
4306 int
4307 lpfc_can_disctmo(struct lpfc_vport *vport)
4308 {
4309         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4310         unsigned long iflags;
4311
4312         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4313                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
4314                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
4315
4316         /* Turn off discovery timer if its running */
4317         if (vport->fc_flag & FC_DISC_TMO) {
4318                 spin_lock_irqsave(shost->host_lock, iflags);
4319                 vport->fc_flag &= ~FC_DISC_TMO;
4320                 spin_unlock_irqrestore(shost->host_lock, iflags);
4321                 del_timer_sync(&vport->fc_disctmo);
4322                 spin_lock_irqsave(&vport->work_port_lock, iflags);
4323                 vport->work_port_events &= ~WORKER_DISC_TMO;
4324                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
4325         }
4326
4327         /* Cancel Discovery Timer state <hba_state> */
4328         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4329                          "0248 Cancel Discovery Timer state x%x "
4330                          "Data: x%x x%x x%x\n",
4331                          vport->port_state, vport->fc_flag,
4332                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
4333         return 0;
4334 }
4335
4336 /*
4337  * Check specified ring for outstanding IOCB on the SLI queue
4338  * Return true if iocb matches the specified nport
4339  */
4340 int
4341 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
4342                     struct lpfc_sli_ring *pring,
4343                     struct lpfc_iocbq *iocb,
4344                     struct lpfc_nodelist *ndlp)
4345 {
4346         struct lpfc_sli *psli = &phba->sli;
4347         IOCB_t *icmd = &iocb->iocb;
4348         struct lpfc_vport    *vport = ndlp->vport;
4349
4350         if (iocb->vport != vport)
4351                 return 0;
4352
4353         if (pring->ringno == LPFC_ELS_RING) {
4354                 switch (icmd->ulpCommand) {
4355                 case CMD_GEN_REQUEST64_CR:
4356                         if (iocb->context_un.ndlp == ndlp)
4357                                 return 1;
4358                 case CMD_ELS_REQUEST64_CR:
4359                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
4360                                 return 1;
4361                 case CMD_XMIT_ELS_RSP64_CX:
4362                         if (iocb->context1 == (uint8_t *) ndlp)
4363                                 return 1;
4364                 }
4365         } else if (pring->ringno == psli->extra_ring) {
4366
4367         } else if (pring->ringno == psli->fcp_ring) {
4368                 /* Skip match check if waiting to relogin to FCP target */
4369                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
4370                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
4371                         return 0;
4372                 }
4373                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
4374                         return 1;
4375                 }
4376         } else if (pring->ringno == psli->next_ring) {
4377
4378         }
4379         return 0;
4380 }
4381
4382 /*
4383  * Free resources / clean up outstanding I/Os
4384  * associated with nlp_rpi in the LPFC_NODELIST entry.
4385  */
4386 static int
4387 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
4388 {
4389         LIST_HEAD(completions);
4390         struct lpfc_sli *psli;
4391         struct lpfc_sli_ring *pring;
4392         struct lpfc_iocbq *iocb, *next_iocb;
4393         uint32_t i;
4394
4395         lpfc_fabric_abort_nport(ndlp);
4396
4397         /*
4398          * Everything that matches on txcmplq will be returned
4399          * by firmware with a no rpi error.
4400          */
4401         psli = &phba->sli;
4402         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
4403                 /* Now process each ring */
4404                 for (i = 0; i < psli->num_rings; i++) {
4405                         pring = &psli->ring[i];
4406
4407                         spin_lock_irq(&phba->hbalock);
4408                         list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
4409                                                  list) {
4410                                 /*
4411                                  * Check to see if iocb matches the nport we are
4412                                  * looking for
4413                                  */
4414                                 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
4415                                                          ndlp))) {
4416                                         /* It matches, so deque and call compl
4417                                            with an error */
4418                                         list_move_tail(&iocb->list,
4419                                                        &completions);
4420                                 }
4421                         }
4422                         spin_unlock_irq(&phba->hbalock);
4423                 }
4424         }
4425
4426         /* Cancel all the IOCBs from the completions list */
4427         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
4428                               IOERR_SLI_ABORTED);
4429
4430         return 0;
4431 }
4432
4433 /**
4434  * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO
4435  * @phba: Pointer to HBA context object.
4436  * @pmb: Pointer to mailbox object.
4437  *
4438  * This function will issue an ELS LOGO command after completing
4439  * the UNREG_RPI.
4440  **/
4441 void
4442 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4443 {
4444         struct lpfc_vport  *vport = pmb->vport;
4445         struct lpfc_nodelist *ndlp;
4446
4447         ndlp = (struct lpfc_nodelist *)(pmb->context1);
4448         if (!ndlp)
4449                 return;
4450         lpfc_issue_els_logo(vport, ndlp, 0);
4451         mempool_free(pmb, phba->mbox_mem_pool);
4452 }
4453
4454 /*
4455  * Free rpi associated with LPFC_NODELIST entry.
4456  * This routine is called from lpfc_freenode(), when we are removing
4457  * a LPFC_NODELIST entry. It is also called if the driver initiates a
4458  * LOGO that completes successfully, and we are waiting to PLOGI back
4459  * to the remote NPort. In addition, it is called after we receive
4460  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
4461  * we are waiting to PLOGI back to the remote NPort.
4462  */
4463 int
4464 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4465 {
4466         struct lpfc_hba *phba = vport->phba;
4467         LPFC_MBOXQ_t    *mbox;
4468         int rc;
4469         uint16_t rpi;
4470
4471         if (ndlp->nlp_flag & NLP_RPI_REGISTERED ||
4472             ndlp->nlp_flag & NLP_REG_LOGIN_SEND) {
4473                 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
4474                         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
4475                                          "3366 RPI x%x needs to be "
4476                                          "unregistered nlp_flag x%x "
4477                                          "did x%x\n",
4478                                          ndlp->nlp_rpi, ndlp->nlp_flag,
4479                                          ndlp->nlp_DID);
4480                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4481                 if (mbox) {
4482                         /* SLI4 ports require the physical rpi value. */
4483                         rpi = ndlp->nlp_rpi;
4484                         if (phba->sli_rev == LPFC_SLI_REV4)
4485                                 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
4486
4487                         lpfc_unreg_login(phba, vport->vpi, rpi, mbox);
4488                         mbox->vport = vport;
4489                         if (ndlp->nlp_flag & NLP_ISSUE_LOGO) {
4490                                 mbox->context1 = ndlp;
4491                                 mbox->mbox_cmpl = lpfc_nlp_logo_unreg;
4492                         } else {
4493                                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4494                         }
4495
4496                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4497                         if (rc == MBX_NOT_FINISHED)
4498                                 mempool_free(mbox, phba->mbox_mem_pool);
4499                 }
4500                 lpfc_no_rpi(phba, ndlp);
4501
4502                 if (phba->sli_rev != LPFC_SLI_REV4)
4503                         ndlp->nlp_rpi = 0;
4504                 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
4505                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
4506                 return 1;
4507         }
4508         return 0;
4509 }
4510
4511 /**
4512  * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
4513  * @phba: pointer to lpfc hba data structure.
4514  *
4515  * This routine is invoked to unregister all the currently registered RPIs
4516  * to the HBA.
4517  **/
4518 void
4519 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
4520 {
4521         struct lpfc_vport **vports;
4522         struct lpfc_nodelist *ndlp;
4523         struct Scsi_Host *shost;
4524         int i;
4525
4526         vports = lpfc_create_vport_work_array(phba);
4527         if (!vports) {
4528                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
4529                         "2884 Vport array allocation failed \n");
4530                 return;
4531         }
4532         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4533                 shost = lpfc_shost_from_vport(vports[i]);
4534                 spin_lock_irq(shost->host_lock);
4535                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
4536                         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
4537                                 /* The mempool_alloc might sleep */
4538                                 spin_unlock_irq(shost->host_lock);
4539                                 lpfc_unreg_rpi(vports[i], ndlp);
4540                                 spin_lock_irq(shost->host_lock);
4541                         }
4542                 }
4543                 spin_unlock_irq(shost->host_lock);
4544         }
4545         lpfc_destroy_vport_work_array(phba, vports);
4546 }
4547
4548 void
4549 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
4550 {
4551         struct lpfc_hba  *phba  = vport->phba;
4552         LPFC_MBOXQ_t     *mbox;
4553         int rc;
4554
4555         if (phba->sli_rev == LPFC_SLI_REV4) {
4556                 lpfc_sli4_unreg_all_rpis(vport);
4557                 return;
4558         }
4559
4560         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4561         if (mbox) {
4562                 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT,
4563                                  mbox);
4564                 mbox->vport = vport;
4565                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4566                 mbox->context1 = NULL;
4567                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
4568                 if (rc != MBX_TIMEOUT)
4569                         mempool_free(mbox, phba->mbox_mem_pool);
4570
4571                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
4572                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
4573                                 "1836 Could not issue "
4574                                 "unreg_login(all_rpis) status %d\n", rc);
4575         }
4576 }
4577
4578 void
4579 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
4580 {
4581         struct lpfc_hba  *phba  = vport->phba;
4582         LPFC_MBOXQ_t     *mbox;
4583         int rc;
4584
4585         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4586         if (mbox) {
4587                 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS,
4588                                mbox);
4589                 mbox->vport = vport;
4590                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4591                 mbox->context1 = NULL;
4592                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
4593                 if (rc != MBX_TIMEOUT)
4594                         mempool_free(mbox, phba->mbox_mem_pool);
4595
4596                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
4597                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
4598                                          "1815 Could not issue "
4599                                          "unreg_did (default rpis) status %d\n",
4600                                          rc);
4601         }
4602 }
4603
4604 /*
4605  * Free resources associated with LPFC_NODELIST entry
4606  * so it can be freed.
4607  */
4608 static int
4609 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4610 {
4611         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4612         struct lpfc_hba  *phba = vport->phba;
4613         LPFC_MBOXQ_t *mb, *nextmb;
4614         struct lpfc_dmabuf *mp;
4615
4616         /* Cleanup node for NPort <nlp_DID> */
4617         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4618                          "0900 Cleanup node for NPort x%x "
4619                          "Data: x%x x%x x%x\n",
4620                          ndlp->nlp_DID, ndlp->nlp_flag,
4621                          ndlp->nlp_state, ndlp->nlp_rpi);
4622         if (NLP_CHK_FREE_REQ(ndlp)) {
4623                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4624                                 "0280 lpfc_cleanup_node: ndlp:x%p "
4625                                 "usgmap:x%x refcnt:%d\n",
4626                                 (void *)ndlp, ndlp->nlp_usg_map,
4627                                 atomic_read(&ndlp->kref.refcount));
4628                 lpfc_dequeue_node(vport, ndlp);
4629         } else {
4630                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4631                                 "0281 lpfc_cleanup_node: ndlp:x%p "
4632                                 "usgmap:x%x refcnt:%d\n",
4633                                 (void *)ndlp, ndlp->nlp_usg_map,
4634                                 atomic_read(&ndlp->kref.refcount));
4635                 lpfc_disable_node(vport, ndlp);
4636         }
4637
4638
4639         /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */
4640
4641         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
4642         if ((mb = phba->sli.mbox_active)) {
4643                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
4644                    !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
4645                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
4646                         mb->context2 = NULL;
4647                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4648                 }
4649         }
4650
4651         spin_lock_irq(&phba->hbalock);
4652         /* Cleanup REG_LOGIN completions which are not yet processed */
4653         list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
4654                 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) ||
4655                         (mb->mbox_flag & LPFC_MBX_IMED_UNREG) ||
4656                         (ndlp != (struct lpfc_nodelist *) mb->context2))
4657                         continue;
4658
4659                 mb->context2 = NULL;
4660                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4661         }
4662
4663         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
4664                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
4665                    !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
4666                     (ndlp == (struct lpfc_nodelist *) mb->context2)) {
4667                         mp = (struct lpfc_dmabuf *) (mb->context1);
4668                         if (mp) {
4669                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
4670                                 kfree(mp);
4671                         }
4672                         list_del(&mb->list);
4673                         mempool_free(mb, phba->mbox_mem_pool);
4674                         /* We shall not invoke the lpfc_nlp_put to decrement
4675                          * the ndlp reference count as we are in the process
4676                          * of lpfc_nlp_release.
4677                          */
4678                 }
4679         }
4680         spin_unlock_irq(&phba->hbalock);
4681
4682         lpfc_els_abort(phba, ndlp);
4683
4684         spin_lock_irq(shost->host_lock);
4685         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
4686         spin_unlock_irq(shost->host_lock);
4687
4688         ndlp->nlp_last_elscmd = 0;
4689         del_timer_sync(&ndlp->nlp_delayfunc);
4690
4691         list_del_init(&ndlp->els_retry_evt.evt_listp);
4692         list_del_init(&ndlp->dev_loss_evt.evt_listp);
4693         lpfc_cleanup_vports_rrqs(vport, ndlp);
4694         lpfc_unreg_rpi(vport, ndlp);
4695
4696         return 0;
4697 }
4698
4699 /*
4700  * Check to see if we can free the nlp back to the freelist.
4701  * If we are in the middle of using the nlp in the discovery state
4702  * machine, defer the free till we reach the end of the state machine.
4703  */
4704 static void
4705 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4706 {
4707         struct lpfc_hba  *phba = vport->phba;
4708         struct lpfc_rport_data *rdata;
4709         LPFC_MBOXQ_t *mbox;
4710         int rc;
4711
4712         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4713         if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
4714             !(ndlp->nlp_flag & NLP_REG_LOGIN_SEND) &&
4715             !(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
4716                 /* For this case we need to cleanup the default rpi
4717                  * allocated by the firmware.
4718                  */
4719                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
4720                         != NULL) {
4721                         rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID,
4722                             (uint8_t *) &vport->fc_sparam, mbox, ndlp->nlp_rpi);
4723                         if (rc) {
4724                                 mempool_free(mbox, phba->mbox_mem_pool);
4725                         }
4726                         else {
4727                                 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
4728                                 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
4729                                 mbox->vport = vport;
4730                                 mbox->context2 = ndlp;
4731                                 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4732                                 if (rc == MBX_NOT_FINISHED) {
4733                                         mempool_free(mbox, phba->mbox_mem_pool);
4734                                 }
4735                         }
4736                 }
4737         }
4738         lpfc_cleanup_node(vport, ndlp);
4739
4740         /*
4741          * We can get here with a non-NULL ndlp->rport because when we
4742          * unregister a rport we don't break the rport/node linkage.  So if we
4743          * do, make sure we don't leaving any dangling pointers behind.
4744          */
4745         if (ndlp->rport) {
4746                 rdata = ndlp->rport->dd_data;
4747                 rdata->pnode = NULL;
4748                 ndlp->rport = NULL;
4749         }
4750 }
4751
4752 static int
4753 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4754               uint32_t did)
4755 {
4756         D_ID mydid, ndlpdid, matchdid;
4757
4758         if (did == Bcast_DID)
4759                 return 0;
4760
4761         /* First check for Direct match */
4762         if (ndlp->nlp_DID == did)
4763                 return 1;
4764
4765         /* Next check for area/domain identically equals 0 match */
4766         mydid.un.word = vport->fc_myDID;
4767         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
4768                 return 0;
4769         }
4770
4771         matchdid.un.word = did;
4772         ndlpdid.un.word = ndlp->nlp_DID;
4773         if (matchdid.un.b.id == ndlpdid.un.b.id) {
4774                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
4775                     (mydid.un.b.area == matchdid.un.b.area)) {
4776                         if ((ndlpdid.un.b.domain == 0) &&
4777                             (ndlpdid.un.b.area == 0)) {
4778                                 if (ndlpdid.un.b.id)
4779                                         return 1;
4780                         }
4781                         return 0;
4782                 }
4783
4784                 matchdid.un.word = ndlp->nlp_DID;
4785                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
4786                     (mydid.un.b.area == ndlpdid.un.b.area)) {
4787                         if ((matchdid.un.b.domain == 0) &&
4788                             (matchdid.un.b.area == 0)) {
4789                                 if (matchdid.un.b.id)
4790                                         return 1;
4791                         }
4792                 }
4793         }
4794         return 0;
4795 }
4796
4797 /* Search for a nodelist entry */
4798 static struct lpfc_nodelist *
4799 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
4800 {
4801         struct lpfc_nodelist *ndlp;
4802         uint32_t data1;
4803
4804         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4805                 if (lpfc_matchdid(vport, ndlp, did)) {
4806                         data1 = (((uint32_t) ndlp->nlp_state << 24) |
4807                                  ((uint32_t) ndlp->nlp_xri << 16) |
4808                                  ((uint32_t) ndlp->nlp_type << 8) |
4809                                  ((uint32_t) ndlp->nlp_rpi & 0xff));
4810                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4811                                          "0929 FIND node DID "
4812                                          "Data: x%p x%x x%x x%x %p\n",
4813                                          ndlp, ndlp->nlp_DID,
4814                                          ndlp->nlp_flag, data1,
4815                                          ndlp->active_rrqs_xri_bitmap);
4816                         return ndlp;
4817                 }
4818         }
4819
4820         /* FIND node did <did> NOT FOUND */
4821         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4822                          "0932 FIND node did x%x NOT FOUND.\n", did);
4823         return NULL;
4824 }
4825
4826 struct lpfc_nodelist *
4827 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
4828 {
4829         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4830         struct lpfc_nodelist *ndlp;
4831         unsigned long iflags;
4832
4833         spin_lock_irqsave(shost->host_lock, iflags);
4834         ndlp = __lpfc_findnode_did(vport, did);
4835         spin_unlock_irqrestore(shost->host_lock, iflags);
4836         return ndlp;
4837 }
4838
4839 struct lpfc_nodelist *
4840 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
4841 {
4842         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4843         struct lpfc_nodelist *ndlp;
4844
4845         ndlp = lpfc_findnode_did(vport, did);
4846         if (!ndlp) {
4847                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
4848                     lpfc_rscn_payload_check(vport, did) == 0)
4849                         return NULL;
4850                 ndlp = (struct lpfc_nodelist *)
4851                      mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
4852                 if (!ndlp)
4853                         return NULL;
4854                 lpfc_nlp_init(vport, ndlp, did);
4855                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
4856                 spin_lock_irq(shost->host_lock);
4857                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4858                 spin_unlock_irq(shost->host_lock);
4859                 return ndlp;
4860         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
4861                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
4862                 if (!ndlp)
4863                         return NULL;
4864                 spin_lock_irq(shost->host_lock);
4865                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4866                 spin_unlock_irq(shost->host_lock);
4867                 return ndlp;
4868         }
4869
4870         if ((vport->fc_flag & FC_RSCN_MODE) &&
4871             !(vport->fc_flag & FC_NDISC_ACTIVE)) {
4872                 if (lpfc_rscn_payload_check(vport, did)) {
4873                         /* If we've already received a PLOGI from this NPort
4874                          * we don't need to try to discover it again.
4875                          */
4876                         if (ndlp->nlp_flag & NLP_RCV_PLOGI)
4877                                 return NULL;
4878
4879                         /* Since this node is marked for discovery,
4880                          * delay timeout is not needed.
4881                          */
4882                         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4883                         spin_lock_irq(shost->host_lock);
4884                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4885                         spin_unlock_irq(shost->host_lock);
4886                 } else
4887                         ndlp = NULL;
4888         } else {
4889                 /* If we've already received a PLOGI from this NPort,
4890                  * or we are already in the process of discovery on it,
4891                  * we don't need to try to discover it again.
4892                  */
4893                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
4894                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
4895                     ndlp->nlp_flag & NLP_RCV_PLOGI)
4896                         return NULL;
4897                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
4898                 spin_lock_irq(shost->host_lock);
4899                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4900                 spin_unlock_irq(shost->host_lock);
4901         }
4902         return ndlp;
4903 }
4904
4905 /* Build a list of nodes to discover based on the loopmap */
4906 void
4907 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
4908 {
4909         struct lpfc_hba  *phba = vport->phba;
4910         int j;
4911         uint32_t alpa, index;
4912
4913         if (!lpfc_is_link_up(phba))
4914                 return;
4915
4916         if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
4917                 return;
4918
4919         /* Check for loop map present or not */
4920         if (phba->alpa_map[0]) {
4921                 for (j = 1; j <= phba->alpa_map[0]; j++) {
4922                         alpa = phba->alpa_map[j];
4923                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
4924                                 continue;
4925                         lpfc_setup_disc_node(vport, alpa);
4926                 }
4927         } else {
4928                 /* No alpamap, so try all alpa's */
4929                 for (j = 0; j < FC_MAXLOOP; j++) {
4930                         /* If cfg_scan_down is set, start from highest
4931                          * ALPA (0xef) to lowest (0x1).
4932                          */
4933                         if (vport->cfg_scan_down)
4934                                 index = j;
4935                         else
4936                                 index = FC_MAXLOOP - j - 1;
4937                         alpa = lpfcAlpaArray[index];
4938                         if ((vport->fc_myDID & 0xff) == alpa)
4939                                 continue;
4940                         lpfc_setup_disc_node(vport, alpa);
4941                 }
4942         }
4943         return;
4944 }
4945
4946 void
4947 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
4948 {
4949         LPFC_MBOXQ_t *mbox;
4950         struct lpfc_sli *psli = &phba->sli;
4951         struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
4952         struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
4953         struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
4954         int  rc;
4955
4956         /*
4957          * if it's not a physical port or if we already send
4958          * clear_la then don't send it.
4959          */
4960         if ((phba->link_state >= LPFC_CLEAR_LA) ||
4961             (vport->port_type != LPFC_PHYSICAL_PORT) ||
4962                 (phba->sli_rev == LPFC_SLI_REV4))
4963                 return;
4964
4965                         /* Link up discovery */
4966         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
4967                 phba->link_state = LPFC_CLEAR_LA;
4968                 lpfc_clear_la(phba, mbox);
4969                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
4970                 mbox->vport = vport;
4971                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4972                 if (rc == MBX_NOT_FINISHED) {
4973                         mempool_free(mbox, phba->mbox_mem_pool);
4974                         lpfc_disc_flush_list(vport);
4975                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4976                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4977                         next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4978                         phba->link_state = LPFC_HBA_ERROR;
4979                 }
4980         }
4981 }
4982
4983 /* Reg_vpi to tell firmware to resume normal operations */
4984 void
4985 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
4986 {
4987         LPFC_MBOXQ_t *regvpimbox;
4988
4989         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4990         if (regvpimbox) {
4991                 lpfc_reg_vpi(vport, regvpimbox);
4992                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
4993                 regvpimbox->vport = vport;
4994                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
4995                                         == MBX_NOT_FINISHED) {
4996                         mempool_free(regvpimbox, phba->mbox_mem_pool);
4997                 }
4998         }
4999 }
5000
5001 /* Start Link up / RSCN discovery on NPR nodes */
5002 void
5003 lpfc_disc_start(struct lpfc_vport *vport)
5004 {
5005         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5006         struct lpfc_hba  *phba = vport->phba;
5007         uint32_t num_sent;
5008         uint32_t clear_la_pending;
5009         int did_changed;
5010
5011         if (!lpfc_is_link_up(phba)) {
5012                 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
5013                                  "3315 Link is not up %x\n",
5014                                  phba->link_state);
5015                 return;
5016         }
5017
5018         if (phba->link_state == LPFC_CLEAR_LA)
5019                 clear_la_pending = 1;
5020         else
5021                 clear_la_pending = 0;
5022
5023         if (vport->port_state < LPFC_VPORT_READY)
5024                 vport->port_state = LPFC_DISC_AUTH;
5025
5026         lpfc_set_disctmo(vport);
5027
5028         if (vport->fc_prevDID == vport->fc_myDID)
5029                 did_changed = 0;
5030         else
5031                 did_changed = 1;
5032
5033         vport->fc_prevDID = vport->fc_myDID;
5034         vport->num_disc_nodes = 0;
5035
5036         /* Start Discovery state <hba_state> */
5037         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5038                          "0202 Start Discovery hba state x%x "
5039                          "Data: x%x x%x x%x\n",
5040                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
5041                          vport->fc_adisc_cnt);
5042
5043         /* First do ADISCs - if any */
5044         num_sent = lpfc_els_disc_adisc(vport);
5045
5046         if (num_sent)
5047                 return;
5048
5049         /* Register the VPI for SLI3, NPIV only. */
5050         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
5051             !(vport->fc_flag & FC_PT2PT) &&
5052             !(vport->fc_flag & FC_RSCN_MODE) &&
5053             (phba->sli_rev < LPFC_SLI_REV4)) {
5054                 if (vport->port_type == LPFC_PHYSICAL_PORT)
5055                         lpfc_issue_clear_la(phba, vport);
5056                 lpfc_issue_reg_vpi(phba, vport);
5057                 return;
5058         }
5059
5060         /*
5061          * For SLI2, we need to set port_state to READY and continue
5062          * discovery.
5063          */
5064         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
5065                 /* If we get here, there is nothing to ADISC */
5066                 if (vport->port_type == LPFC_PHYSICAL_PORT)
5067                         lpfc_issue_clear_la(phba, vport);
5068
5069                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
5070                         vport->num_disc_nodes = 0;
5071                         /* go thru NPR nodes and issue ELS PLOGIs */
5072                         if (vport->fc_npr_cnt)
5073                                 lpfc_els_disc_plogi(vport);
5074
5075                         if (!vport->num_disc_nodes) {
5076                                 spin_lock_irq(shost->host_lock);
5077                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
5078                                 spin_unlock_irq(shost->host_lock);
5079                                 lpfc_can_disctmo(vport);
5080                         }
5081                 }
5082                 vport->port_state = LPFC_VPORT_READY;
5083         } else {
5084                 /* Next do PLOGIs - if any */
5085                 num_sent = lpfc_els_disc_plogi(vport);
5086
5087                 if (num_sent)
5088                         return;
5089
5090                 if (vport->fc_flag & FC_RSCN_MODE) {
5091                         /* Check to see if more RSCNs came in while we
5092                          * were processing this one.
5093                          */
5094                         if ((vport->fc_rscn_id_cnt == 0) &&
5095                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
5096                                 spin_lock_irq(shost->host_lock);
5097                                 vport->fc_flag &= ~FC_RSCN_MODE;
5098                                 spin_unlock_irq(shost->host_lock);
5099                                 lpfc_can_disctmo(vport);
5100                         } else
5101                                 lpfc_els_handle_rscn(vport);
5102                 }
5103         }
5104         return;
5105 }
5106
5107 /*
5108  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
5109  *  ring the match the sppecified nodelist.
5110  */
5111 static void
5112 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
5113 {
5114         LIST_HEAD(completions);
5115         struct lpfc_sli *psli;
5116         IOCB_t     *icmd;
5117         struct lpfc_iocbq    *iocb, *next_iocb;
5118         struct lpfc_sli_ring *pring;
5119
5120         psli = &phba->sli;
5121         pring = &psli->ring[LPFC_ELS_RING];
5122
5123         /* Error matching iocb on txq or txcmplq
5124          * First check the txq.
5125          */
5126         spin_lock_irq(&phba->hbalock);
5127         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
5128                 if (iocb->context1 != ndlp) {
5129                         continue;
5130                 }
5131                 icmd = &iocb->iocb;
5132                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
5133                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
5134
5135                         list_move_tail(&iocb->list, &completions);
5136                 }
5137         }
5138
5139         /* Next check the txcmplq */
5140         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
5141                 if (iocb->context1 != ndlp) {
5142                         continue;
5143                 }
5144                 icmd = &iocb->iocb;
5145                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
5146                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
5147                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
5148                 }
5149         }
5150         spin_unlock_irq(&phba->hbalock);
5151
5152         /* Cancel all the IOCBs from the completions list */
5153         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5154                               IOERR_SLI_ABORTED);
5155 }
5156
5157 static void
5158 lpfc_disc_flush_list(struct lpfc_vport *vport)
5159 {
5160         struct lpfc_nodelist *ndlp, *next_ndlp;
5161         struct lpfc_hba *phba = vport->phba;
5162
5163         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
5164                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
5165                                          nlp_listp) {
5166                         if (!NLP_CHK_NODE_ACT(ndlp))
5167                                 continue;
5168                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5169                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
5170                                 lpfc_free_tx(phba, ndlp);
5171                         }
5172                 }
5173         }
5174 }
5175
5176 void
5177 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
5178 {
5179         lpfc_els_flush_rscn(vport);
5180         lpfc_els_flush_cmd(vport);
5181         lpfc_disc_flush_list(vport);
5182 }
5183
5184 /*****************************************************************************/
5185 /*
5186  * NAME:     lpfc_disc_timeout
5187  *
5188  * FUNCTION: Fibre Channel driver discovery timeout routine.
5189  *
5190  * EXECUTION ENVIRONMENT: interrupt only
5191  *
5192  * CALLED FROM:
5193  *      Timer function
5194  *
5195  * RETURNS:
5196  *      none
5197  */
5198 /*****************************************************************************/
5199 void
5200 lpfc_disc_timeout(unsigned long ptr)
5201 {
5202         struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
5203         struct lpfc_hba   *phba = vport->phba;
5204         uint32_t tmo_posted;
5205         unsigned long flags = 0;
5206
5207         if (unlikely(!phba))
5208                 return;
5209
5210         spin_lock_irqsave(&vport->work_port_lock, flags);
5211         tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
5212         if (!tmo_posted)
5213                 vport->work_port_events |= WORKER_DISC_TMO;
5214         spin_unlock_irqrestore(&vport->work_port_lock, flags);
5215
5216         if (!tmo_posted)
5217                 lpfc_worker_wake_up(phba);
5218         return;
5219 }
5220
5221 static void
5222 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
5223 {
5224         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5225         struct lpfc_hba  *phba = vport->phba;
5226         struct lpfc_sli  *psli = &phba->sli;
5227         struct lpfc_nodelist *ndlp, *next_ndlp;
5228         LPFC_MBOXQ_t *initlinkmbox;
5229         int rc, clrlaerr = 0;
5230
5231         if (!(vport->fc_flag & FC_DISC_TMO))
5232                 return;
5233
5234         spin_lock_irq(shost->host_lock);
5235         vport->fc_flag &= ~FC_DISC_TMO;
5236         spin_unlock_irq(shost->host_lock);
5237
5238         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
5239                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
5240                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
5241
5242         switch (vport->port_state) {
5243
5244         case LPFC_LOCAL_CFG_LINK:
5245         /* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
5246          * FAN
5247          */
5248                                 /* FAN timeout */
5249                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
5250                                  "0221 FAN timeout\n");
5251                 /* Start discovery by sending FLOGI, clean up old rpis */
5252                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
5253                                          nlp_listp) {
5254                         if (!NLP_CHK_NODE_ACT(ndlp))
5255                                 continue;
5256                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
5257                                 continue;
5258                         if (ndlp->nlp_type & NLP_FABRIC) {
5259                                 /* Clean up the ndlp on Fabric connections */
5260                                 lpfc_drop_node(vport, ndlp);
5261
5262                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
5263                                 /* Fail outstanding IO now since device
5264                                  * is marked for PLOGI.
5265                                  */
5266                                 lpfc_unreg_rpi(vport, ndlp);
5267                         }
5268                 }
5269                 if (vport->port_state != LPFC_FLOGI) {
5270                         if (phba->sli_rev <= LPFC_SLI_REV3)
5271                                 lpfc_initial_flogi(vport);
5272                         else
5273                                 lpfc_issue_init_vfi(vport);
5274                         return;
5275                 }
5276                 break;
5277
5278         case LPFC_FDISC:
5279         case LPFC_FLOGI:
5280         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
5281                 /* Initial FLOGI timeout */
5282                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5283                                  "0222 Initial %s timeout\n",
5284                                  vport->vpi ? "FDISC" : "FLOGI");
5285
5286                 /* Assume no Fabric and go on with discovery.
5287                  * Check for outstanding ELS FLOGI to abort.
5288                  */
5289
5290                 /* FLOGI failed, so just use loop map to make discovery list */
5291                 lpfc_disc_list_loopmap(vport);
5292
5293                 /* Start discovery */
5294                 lpfc_disc_start(vport);
5295                 break;
5296
5297         case LPFC_FABRIC_CFG_LINK:
5298         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
5299            NameServer login */
5300                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5301                                  "0223 Timeout while waiting for "
5302                                  "NameServer login\n");
5303                 /* Next look for NameServer ndlp */
5304                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
5305                 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
5306                         lpfc_els_abort(phba, ndlp);
5307
5308                 /* ReStart discovery */
5309                 goto restart_disc;
5310
5311         case LPFC_NS_QRY:
5312         /* Check for wait for NameServer Rsp timeout */
5313                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5314                                  "0224 NameServer Query timeout "
5315                                  "Data: x%x x%x\n",
5316                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
5317
5318                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
5319                         /* Try it one more time */
5320                         vport->fc_ns_retry++;
5321                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
5322                                          vport->fc_ns_retry, 0);
5323                         if (rc == 0)
5324                                 break;
5325                 }
5326                 vport->fc_ns_retry = 0;
5327
5328 restart_disc:
5329                 /*
5330                  * Discovery is over.
5331                  * set port_state to PORT_READY if SLI2.
5332                  * cmpl_reg_vpi will set port_state to READY for SLI3.
5333                  */
5334                 if (phba->sli_rev < LPFC_SLI_REV4) {
5335                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
5336                                 lpfc_issue_reg_vpi(phba, vport);
5337                         else  {
5338                                 lpfc_issue_clear_la(phba, vport);
5339                                 vport->port_state = LPFC_VPORT_READY;
5340                         }
5341                 }
5342
5343                 /* Setup and issue mailbox INITIALIZE LINK command */
5344                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5345                 if (!initlinkmbox) {
5346                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5347                                          "0206 Device Discovery "
5348                                          "completion error\n");
5349                         phba->link_state = LPFC_HBA_ERROR;
5350                         break;
5351                 }
5352
5353                 lpfc_linkdown(phba);
5354                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
5355                                phba->cfg_link_speed);
5356                 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
5357                 initlinkmbox->vport = vport;
5358                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5359                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
5360                 lpfc_set_loopback_flag(phba);
5361                 if (rc == MBX_NOT_FINISHED)
5362                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
5363
5364                 break;
5365
5366         case LPFC_DISC_AUTH:
5367         /* Node Authentication timeout */
5368                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5369                                  "0227 Node Authentication timeout\n");
5370                 lpfc_disc_flush_list(vport);
5371
5372                 /*
5373                  * set port_state to PORT_READY if SLI2.
5374                  * cmpl_reg_vpi will set port_state to READY for SLI3.
5375                  */
5376                 if (phba->sli_rev < LPFC_SLI_REV4) {
5377                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
5378                                 lpfc_issue_reg_vpi(phba, vport);
5379                         else  { /* NPIV Not enabled */
5380                                 lpfc_issue_clear_la(phba, vport);
5381                                 vport->port_state = LPFC_VPORT_READY;
5382                         }
5383                 }
5384                 break;
5385
5386         case LPFC_VPORT_READY:
5387                 if (vport->fc_flag & FC_RSCN_MODE) {
5388                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5389                                          "0231 RSCN timeout Data: x%x "
5390                                          "x%x\n",
5391                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
5392
5393                         /* Cleanup any outstanding ELS commands */
5394                         lpfc_els_flush_cmd(vport);
5395
5396                         lpfc_els_flush_rscn(vport);
5397                         lpfc_disc_flush_list(vport);
5398                 }
5399                 break;
5400
5401         default:
5402                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5403                                  "0273 Unexpected discovery timeout, "
5404                                  "vport State x%x\n", vport->port_state);
5405                 break;
5406         }
5407
5408         switch (phba->link_state) {
5409         case LPFC_CLEAR_LA:
5410                                 /* CLEAR LA timeout */
5411                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5412                                  "0228 CLEAR LA timeout\n");
5413                 clrlaerr = 1;
5414                 break;
5415
5416         case LPFC_LINK_UP:
5417                 lpfc_issue_clear_la(phba, vport);
5418                 /* Drop thru */
5419         case LPFC_LINK_UNKNOWN:
5420         case LPFC_WARM_START:
5421         case LPFC_INIT_START:
5422         case LPFC_INIT_MBX_CMDS:
5423         case LPFC_LINK_DOWN:
5424         case LPFC_HBA_ERROR:
5425                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5426                                  "0230 Unexpected timeout, hba link "
5427                                  "state x%x\n", phba->link_state);
5428                 clrlaerr = 1;
5429                 break;
5430
5431         case LPFC_HBA_READY:
5432                 break;
5433         }
5434
5435         if (clrlaerr) {
5436                 lpfc_disc_flush_list(vport);
5437                 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
5438                 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
5439                 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
5440                 vport->port_state = LPFC_VPORT_READY;
5441         }
5442
5443         return;
5444 }
5445
5446 /*
5447  * This routine handles processing a NameServer REG_LOGIN mailbox
5448  * command upon completion. It is setup in the LPFC_MBOXQ
5449  * as the completion routine when the command is
5450  * handed off to the SLI layer.
5451  */
5452 void
5453 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5454 {
5455         MAILBOX_t *mb = &pmb->u.mb;
5456         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
5457         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
5458         struct lpfc_vport    *vport = pmb->vport;
5459
5460         pmb->context1 = NULL;
5461         pmb->context2 = NULL;
5462
5463         if (phba->sli_rev < LPFC_SLI_REV4)
5464                 ndlp->nlp_rpi = mb->un.varWords[0];
5465         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
5466         ndlp->nlp_type |= NLP_FABRIC;
5467         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
5468
5469         /*
5470          * Start issuing Fabric-Device Management Interface (FDMI) command to
5471          * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
5472          * fdmi-on=2 (supporting RPA/hostnmae)
5473          */
5474
5475         if (vport->cfg_fdmi_on == 1)
5476                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
5477         else
5478                 mod_timer(&vport->fc_fdmitmo,
5479                           jiffies + msecs_to_jiffies(1000 * 60));
5480
5481         /* decrement the node reference count held for this callback
5482          * function.
5483          */
5484         lpfc_nlp_put(ndlp);
5485         lpfc_mbuf_free(phba, mp->virt, mp->phys);
5486         kfree(mp);
5487         mempool_free(pmb, phba->mbox_mem_pool);
5488
5489         return;
5490 }
5491
5492 static int
5493 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
5494 {
5495         uint16_t *rpi = param;
5496
5497         /* check for active node */
5498         if (!NLP_CHK_NODE_ACT(ndlp))
5499                 return 0;
5500
5501         return ndlp->nlp_rpi == *rpi;
5502 }
5503
5504 static int
5505 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
5506 {
5507         return memcmp(&ndlp->nlp_portname, param,
5508                       sizeof(ndlp->nlp_portname)) == 0;
5509 }
5510
5511 static struct lpfc_nodelist *
5512 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
5513 {
5514         struct lpfc_nodelist *ndlp;
5515
5516         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5517                 if (filter(ndlp, param)) {
5518                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5519                                          "3185 FIND node filter %p DID "
5520                                          "Data: x%p x%x x%x\n",
5521                                          filter, ndlp, ndlp->nlp_DID,
5522                                          ndlp->nlp_flag);
5523                         return ndlp;
5524                 }
5525         }
5526         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5527                          "3186 FIND node filter %p NOT FOUND.\n", filter);
5528         return NULL;
5529 }
5530
5531 /*
5532  * This routine looks up the ndlp lists for the given RPI. If rpi found it
5533  * returns the node list element pointer else return NULL.
5534  */
5535 struct lpfc_nodelist *
5536 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
5537 {
5538         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
5539 }
5540
5541 /*
5542  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
5543  * returns the node element list pointer else return NULL.
5544  */
5545 struct lpfc_nodelist *
5546 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
5547 {
5548         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5549         struct lpfc_nodelist *ndlp;
5550
5551         spin_lock_irq(shost->host_lock);
5552         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
5553         spin_unlock_irq(shost->host_lock);
5554         return ndlp;
5555 }
5556
5557 /*
5558  * This routine looks up the ndlp lists for the given RPI. If the rpi
5559  * is found, the routine returns the node element list pointer else
5560  * return NULL.
5561  */
5562 struct lpfc_nodelist *
5563 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
5564 {
5565         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5566         struct lpfc_nodelist *ndlp;
5567
5568         spin_lock_irq(shost->host_lock);
5569         ndlp = __lpfc_findnode_rpi(vport, rpi);
5570         spin_unlock_irq(shost->host_lock);
5571         return ndlp;
5572 }
5573
5574 /**
5575  * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
5576  * @phba: pointer to lpfc hba data structure.
5577  * @vpi: the physical host virtual N_Port identifier.
5578  *
5579  * This routine finds a vport on a HBA (referred by @phba) through a
5580  * @vpi. The function walks the HBA's vport list and returns the address
5581  * of the vport with the matching @vpi.
5582  *
5583  * Return code
5584  *    NULL - No vport with the matching @vpi found
5585  *    Otherwise - Address to the vport with the matching @vpi.
5586  **/
5587 struct lpfc_vport *
5588 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
5589 {
5590         struct lpfc_vport *vport;
5591         unsigned long flags;
5592         int i = 0;
5593
5594         /* The physical ports are always vpi 0 - translate is unnecessary. */
5595         if (vpi > 0) {
5596                 /*
5597                  * Translate the physical vpi to the logical vpi.  The
5598                  * vport stores the logical vpi.
5599                  */
5600                 for (i = 0; i < phba->max_vpi; i++) {
5601                         if (vpi == phba->vpi_ids[i])
5602                                 break;
5603                 }
5604
5605                 if (i >= phba->max_vpi) {
5606                         lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
5607                                          "2936 Could not find Vport mapped "
5608                                          "to vpi %d\n", vpi);
5609                         return NULL;
5610                 }
5611         }
5612
5613         spin_lock_irqsave(&phba->hbalock, flags);
5614         list_for_each_entry(vport, &phba->port_list, listentry) {
5615                 if (vport->vpi == i) {
5616                         spin_unlock_irqrestore(&phba->hbalock, flags);
5617                         return vport;
5618                 }
5619         }
5620         spin_unlock_irqrestore(&phba->hbalock, flags);
5621         return NULL;
5622 }
5623
5624 void
5625 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
5626               uint32_t did)
5627 {
5628         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
5629
5630         lpfc_initialize_node(vport, ndlp, did);
5631         INIT_LIST_HEAD(&ndlp->nlp_listp);
5632         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
5633                 ndlp->nlp_rpi = lpfc_sli4_alloc_rpi(vport->phba);
5634                 ndlp->active_rrqs_xri_bitmap =
5635                                 mempool_alloc(vport->phba->active_rrq_pool,
5636                                               GFP_KERNEL);
5637                 if (ndlp->active_rrqs_xri_bitmap)
5638                         memset(ndlp->active_rrqs_xri_bitmap, 0,
5639                                ndlp->phba->cfg_rrq_xri_bitmap_sz);
5640         }
5641
5642
5643
5644         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
5645                 "node init:       did:x%x",
5646                 ndlp->nlp_DID, 0, 0);
5647
5648         return;
5649 }
5650
5651 /* This routine releases all resources associated with a specifc NPort's ndlp
5652  * and mempool_free's the nodelist.
5653  */
5654 static void
5655 lpfc_nlp_release(struct kref *kref)
5656 {
5657         struct lpfc_hba *phba;
5658         unsigned long flags;
5659         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
5660                                                   kref);
5661
5662         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5663                 "node release:    did:x%x flg:x%x type:x%x",
5664                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
5665
5666         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
5667                         "0279 lpfc_nlp_release: ndlp:x%p did %x "
5668                         "usgmap:x%x refcnt:%d\n",
5669                         (void *)ndlp, ndlp->nlp_DID, ndlp->nlp_usg_map,
5670                         atomic_read(&ndlp->kref.refcount));
5671
5672         /* remove ndlp from action. */
5673         lpfc_nlp_remove(ndlp->vport, ndlp);
5674
5675         /* clear the ndlp active flag for all release cases */
5676         phba = ndlp->phba;
5677         spin_lock_irqsave(&phba->ndlp_lock, flags);
5678         NLP_CLR_NODE_ACT(ndlp);
5679         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5680         if (phba->sli_rev == LPFC_SLI_REV4)
5681                 lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi);
5682
5683         /* free ndlp memory for final ndlp release */
5684         if (NLP_CHK_FREE_REQ(ndlp)) {
5685                 kfree(ndlp->lat_data);
5686                 if (phba->sli_rev == LPFC_SLI_REV4)
5687                         mempool_free(ndlp->active_rrqs_xri_bitmap,
5688                                      ndlp->phba->active_rrq_pool);
5689                 mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
5690         }
5691 }
5692
5693 /* This routine bumps the reference count for a ndlp structure to ensure
5694  * that one discovery thread won't free a ndlp while another discovery thread
5695  * is using it.
5696  */
5697 struct lpfc_nodelist *
5698 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
5699 {
5700         struct lpfc_hba *phba;
5701         unsigned long flags;
5702
5703         if (ndlp) {
5704                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5705                         "node get:        did:x%x flg:x%x refcnt:x%x",
5706                         ndlp->nlp_DID, ndlp->nlp_flag,
5707                         atomic_read(&ndlp->kref.refcount));
5708                 /* The check of ndlp usage to prevent incrementing the
5709                  * ndlp reference count that is in the process of being
5710                  * released.
5711                  */
5712                 phba = ndlp->phba;
5713                 spin_lock_irqsave(&phba->ndlp_lock, flags);
5714                 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
5715                         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5716                         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
5717                                 "0276 lpfc_nlp_get: ndlp:x%p "
5718                                 "usgmap:x%x refcnt:%d\n",
5719                                 (void *)ndlp, ndlp->nlp_usg_map,
5720                                 atomic_read(&ndlp->kref.refcount));
5721                         return NULL;
5722                 } else
5723                         kref_get(&ndlp->kref);
5724                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5725         }
5726         return ndlp;
5727 }
5728
5729 /* This routine decrements the reference count for a ndlp structure. If the
5730  * count goes to 0, this indicates the the associated nodelist should be
5731  * freed. Returning 1 indicates the ndlp resource has been released; on the
5732  * other hand, returning 0 indicates the ndlp resource has not been released
5733  * yet.
5734  */
5735 int
5736 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
5737 {
5738         struct lpfc_hba *phba;
5739         unsigned long flags;
5740
5741         if (!ndlp)
5742                 return 1;
5743
5744         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5745         "node put:        did:x%x flg:x%x refcnt:x%x",
5746                 ndlp->nlp_DID, ndlp->nlp_flag,
5747                 atomic_read(&ndlp->kref.refcount));
5748         phba = ndlp->phba;
5749         spin_lock_irqsave(&phba->ndlp_lock, flags);
5750         /* Check the ndlp memory free acknowledge flag to avoid the
5751          * possible race condition that kref_put got invoked again
5752          * after previous one has done ndlp memory free.
5753          */
5754         if (NLP_CHK_FREE_ACK(ndlp)) {
5755                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5756                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
5757                                 "0274 lpfc_nlp_put: ndlp:x%p "
5758                                 "usgmap:x%x refcnt:%d\n",
5759                                 (void *)ndlp, ndlp->nlp_usg_map,
5760                                 atomic_read(&ndlp->kref.refcount));
5761                 return 1;
5762         }
5763         /* Check the ndlp inactivate log flag to avoid the possible
5764          * race condition that kref_put got invoked again after ndlp
5765          * is already in inactivating state.
5766          */
5767         if (NLP_CHK_IACT_REQ(ndlp)) {
5768                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5769                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
5770                                 "0275 lpfc_nlp_put: ndlp:x%p "
5771                                 "usgmap:x%x refcnt:%d\n",
5772                                 (void *)ndlp, ndlp->nlp_usg_map,
5773                                 atomic_read(&ndlp->kref.refcount));
5774                 return 1;
5775         }
5776         /* For last put, mark the ndlp usage flags to make sure no
5777          * other kref_get and kref_put on the same ndlp shall get
5778          * in between the process when the final kref_put has been
5779          * invoked on this ndlp.
5780          */
5781         if (atomic_read(&ndlp->kref.refcount) == 1) {
5782                 /* Indicate ndlp is put to inactive state. */
5783                 NLP_SET_IACT_REQ(ndlp);
5784                 /* Acknowledge ndlp memory free has been seen. */
5785                 if (NLP_CHK_FREE_REQ(ndlp))
5786                         NLP_SET_FREE_ACK(ndlp);
5787         }
5788         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5789         /* Note, the kref_put returns 1 when decrementing a reference
5790          * count that was 1, it invokes the release callback function,
5791          * but it still left the reference count as 1 (not actually
5792          * performs the last decrementation). Otherwise, it actually
5793          * decrements the reference count and returns 0.
5794          */
5795         return kref_put(&ndlp->kref, lpfc_nlp_release);
5796 }
5797
5798 /* This routine free's the specified nodelist if it is not in use
5799  * by any other discovery thread. This routine returns 1 if the
5800  * ndlp has been freed. A return value of 0 indicates the ndlp is
5801  * not yet been released.
5802  */
5803 int
5804 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
5805 {
5806         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5807                 "node not used:   did:x%x flg:x%x refcnt:x%x",
5808                 ndlp->nlp_DID, ndlp->nlp_flag,
5809                 atomic_read(&ndlp->kref.refcount));
5810         if (atomic_read(&ndlp->kref.refcount) == 1)
5811                 if (lpfc_nlp_put(ndlp))
5812                         return 1;
5813         return 0;
5814 }
5815
5816 /**
5817  * lpfc_fcf_inuse - Check if FCF can be unregistered.
5818  * @phba: Pointer to hba context object.
5819  *
5820  * This function iterate through all FC nodes associated
5821  * will all vports to check if there is any node with
5822  * fc_rports associated with it. If there is an fc_rport
5823  * associated with the node, then the node is either in
5824  * discovered state or its devloss_timer is pending.
5825  */
5826 static int
5827 lpfc_fcf_inuse(struct lpfc_hba *phba)
5828 {
5829         struct lpfc_vport **vports;
5830         int i, ret = 0;
5831         struct lpfc_nodelist *ndlp;
5832         struct Scsi_Host  *shost;
5833
5834         vports = lpfc_create_vport_work_array(phba);
5835
5836         /* If driver cannot allocate memory, indicate fcf is in use */
5837         if (!vports)
5838                 return 1;
5839
5840         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5841                 shost = lpfc_shost_from_vport(vports[i]);
5842                 spin_lock_irq(shost->host_lock);
5843                 /*
5844                  * IF the CVL_RCVD bit is not set then we have sent the
5845                  * flogi.
5846                  * If dev_loss fires while we are waiting we do not want to
5847                  * unreg the fcf.
5848                  */
5849                 if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) {
5850                         spin_unlock_irq(shost->host_lock);
5851                         ret =  1;
5852                         goto out;
5853                 }
5854                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
5855                         if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport &&
5856                           (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
5857                                 ret = 1;
5858                                 spin_unlock_irq(shost->host_lock);
5859                                 goto out;
5860                         } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
5861                                 ret = 1;
5862                                 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
5863                                                 "2624 RPI %x DID %x flag %x "
5864                                                 "still logged in\n",
5865                                                 ndlp->nlp_rpi, ndlp->nlp_DID,
5866                                                 ndlp->nlp_flag);
5867                         }
5868                 }
5869                 spin_unlock_irq(shost->host_lock);
5870         }
5871 out:
5872         lpfc_destroy_vport_work_array(phba, vports);
5873         return ret;
5874 }
5875
5876 /**
5877  * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
5878  * @phba: Pointer to hba context object.
5879  * @mboxq: Pointer to mailbox object.
5880  *
5881  * This function frees memory associated with the mailbox command.
5882  */
5883 void
5884 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
5885 {
5886         struct lpfc_vport *vport = mboxq->vport;
5887         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5888
5889         if (mboxq->u.mb.mbxStatus) {
5890                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5891                         "2555 UNREG_VFI mbxStatus error x%x "
5892                         "HBA state x%x\n",
5893                         mboxq->u.mb.mbxStatus, vport->port_state);
5894         }
5895         spin_lock_irq(shost->host_lock);
5896         phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
5897         spin_unlock_irq(shost->host_lock);
5898         mempool_free(mboxq, phba->mbox_mem_pool);
5899         return;
5900 }
5901
5902 /**
5903  * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
5904  * @phba: Pointer to hba context object.
5905  * @mboxq: Pointer to mailbox object.
5906  *
5907  * This function frees memory associated with the mailbox command.
5908  */
5909 static void
5910 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
5911 {
5912         struct lpfc_vport *vport = mboxq->vport;
5913
5914         if (mboxq->u.mb.mbxStatus) {
5915                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5916                         "2550 UNREG_FCFI mbxStatus error x%x "
5917                         "HBA state x%x\n",
5918                         mboxq->u.mb.mbxStatus, vport->port_state);
5919         }
5920         mempool_free(mboxq, phba->mbox_mem_pool);
5921         return;
5922 }
5923
5924 /**
5925  * lpfc_unregister_fcf_prep - Unregister fcf record preparation
5926  * @phba: Pointer to hba context object.
5927  *
5928  * This function prepare the HBA for unregistering the currently registered
5929  * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
5930  * VFIs.
5931  */
5932 int
5933 lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
5934 {
5935         struct lpfc_vport **vports;
5936         struct lpfc_nodelist *ndlp;
5937         struct Scsi_Host *shost;
5938         int i = 0, rc;
5939
5940         /* Unregister RPIs */
5941         if (lpfc_fcf_inuse(phba))
5942                 lpfc_unreg_hba_rpis(phba);
5943
5944         /* At this point, all discovery is aborted */
5945         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
5946
5947         /* Unregister VPIs */
5948         vports = lpfc_create_vport_work_array(phba);
5949         if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
5950                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5951                         /* Stop FLOGI/FDISC retries */
5952                         ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
5953                         if (ndlp)
5954                                 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
5955                         lpfc_cleanup_pending_mbox(vports[i]);
5956                         if (phba->sli_rev == LPFC_SLI_REV4)
5957                                 lpfc_sli4_unreg_all_rpis(vports[i]);
5958                         lpfc_mbx_unreg_vpi(vports[i]);
5959                         shost = lpfc_shost_from_vport(vports[i]);
5960                         spin_lock_irq(shost->host_lock);
5961                         vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
5962                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
5963                         spin_unlock_irq(shost->host_lock);
5964                 }
5965         lpfc_destroy_vport_work_array(phba, vports);
5966         if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) {
5967                 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
5968                 if (ndlp)
5969                         lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
5970                 lpfc_cleanup_pending_mbox(phba->pport);
5971                 if (phba->sli_rev == LPFC_SLI_REV4)
5972                         lpfc_sli4_unreg_all_rpis(phba->pport);
5973                 lpfc_mbx_unreg_vpi(phba->pport);
5974                 shost = lpfc_shost_from_vport(phba->pport);
5975                 spin_lock_irq(shost->host_lock);
5976                 phba->pport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
5977                 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED;
5978                 spin_unlock_irq(shost->host_lock);
5979         }
5980
5981         /* Cleanup any outstanding ELS commands */
5982         lpfc_els_flush_all_cmd(phba);
5983
5984         /* Unregister the physical port VFI */
5985         rc = lpfc_issue_unreg_vfi(phba->pport);
5986         return rc;
5987 }
5988
5989 /**
5990  * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
5991  * @phba: Pointer to hba context object.
5992  *
5993  * This function issues synchronous unregister FCF mailbox command to HBA to
5994  * unregister the currently registered FCF record. The driver does not reset
5995  * the driver FCF usage state flags.
5996  *
5997  * Return 0 if successfully issued, none-zero otherwise.
5998  */
5999 int
6000 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
6001 {
6002         LPFC_MBOXQ_t *mbox;
6003         int rc;
6004
6005         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6006         if (!mbox) {
6007                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
6008                                 "2551 UNREG_FCFI mbox allocation failed"
6009                                 "HBA state x%x\n", phba->pport->port_state);
6010                 return -ENOMEM;
6011         }
6012         lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
6013         mbox->vport = phba->pport;
6014         mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
6015         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
6016
6017         if (rc == MBX_NOT_FINISHED) {
6018                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6019                                 "2552 Unregister FCFI command failed rc x%x "
6020                                 "HBA state x%x\n",
6021                                 rc, phba->pport->port_state);
6022                 return -EINVAL;
6023         }
6024         return 0;
6025 }
6026
6027 /**
6028  * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
6029  * @phba: Pointer to hba context object.
6030  *
6031  * This function unregisters the currently reigstered FCF. This function
6032  * also tries to find another FCF for discovery by rescan the HBA FCF table.
6033  */
6034 void
6035 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
6036 {
6037         int rc;
6038
6039         /* Preparation for unregistering fcf */
6040         rc = lpfc_unregister_fcf_prep(phba);
6041         if (rc) {
6042                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
6043                                 "2748 Failed to prepare for unregistering "
6044                                 "HBA's FCF record: rc=%d\n", rc);
6045                 return;
6046         }
6047
6048         /* Now, unregister FCF record and reset HBA FCF state */
6049         rc = lpfc_sli4_unregister_fcf(phba);
6050         if (rc)
6051                 return;
6052         /* Reset HBA FCF states after successful unregister FCF */
6053         phba->fcf.fcf_flag = 0;
6054         phba->fcf.current_rec.flag = 0;
6055
6056         /*
6057          * If driver is not unloading, check if there is any other
6058          * FCF record that can be used for discovery.
6059          */
6060         if ((phba->pport->load_flag & FC_UNLOADING) ||
6061             (phba->link_state < LPFC_LINK_UP))
6062                 return;
6063
6064         /* This is considered as the initial FCF discovery scan */
6065         spin_lock_irq(&phba->hbalock);
6066         phba->fcf.fcf_flag |= FCF_INIT_DISC;
6067         spin_unlock_irq(&phba->hbalock);
6068
6069         /* Reset FCF roundrobin bmask for new discovery */
6070         lpfc_sli4_clear_fcf_rr_bmask(phba);
6071
6072         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
6073
6074         if (rc) {
6075                 spin_lock_irq(&phba->hbalock);
6076                 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
6077                 spin_unlock_irq(&phba->hbalock);
6078                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
6079                                 "2553 lpfc_unregister_unused_fcf failed "
6080                                 "to read FCF record HBA state x%x\n",
6081                                 phba->pport->port_state);
6082         }
6083 }
6084
6085 /**
6086  * lpfc_unregister_fcf - Unregister the currently registered fcf record
6087  * @phba: Pointer to hba context object.
6088  *
6089  * This function just unregisters the currently reigstered FCF. It does not
6090  * try to find another FCF for discovery.
6091  */
6092 void
6093 lpfc_unregister_fcf(struct lpfc_hba *phba)
6094 {
6095         int rc;
6096
6097         /* Preparation for unregistering fcf */
6098         rc = lpfc_unregister_fcf_prep(phba);
6099         if (rc) {
6100                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
6101                                 "2749 Failed to prepare for unregistering "
6102                                 "HBA's FCF record: rc=%d\n", rc);
6103                 return;
6104         }
6105
6106         /* Now, unregister FCF record and reset HBA FCF state */
6107         rc = lpfc_sli4_unregister_fcf(phba);
6108         if (rc)
6109                 return;
6110         /* Set proper HBA FCF states after successful unregister FCF */
6111         spin_lock_irq(&phba->hbalock);
6112         phba->fcf.fcf_flag &= ~FCF_REGISTERED;
6113         spin_unlock_irq(&phba->hbalock);
6114 }
6115
6116 /**
6117  * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
6118  * @phba: Pointer to hba context object.
6119  *
6120  * This function check if there are any connected remote port for the FCF and
6121  * if all the devices are disconnected, this function unregister FCFI.
6122  * This function also tries to use another FCF for discovery.
6123  */
6124 void
6125 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
6126 {
6127         /*
6128          * If HBA is not running in FIP mode, if HBA does not support
6129          * FCoE, if FCF discovery is ongoing, or if FCF has not been
6130          * registered, do nothing.
6131          */
6132         spin_lock_irq(&phba->hbalock);
6133         if (!(phba->hba_flag & HBA_FCOE_MODE) ||
6134             !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
6135             !(phba->hba_flag & HBA_FIP_SUPPORT) ||
6136             (phba->fcf.fcf_flag & FCF_DISCOVERY) ||
6137             (phba->pport->port_state == LPFC_FLOGI)) {
6138                 spin_unlock_irq(&phba->hbalock);
6139                 return;
6140         }
6141         spin_unlock_irq(&phba->hbalock);
6142
6143         if (lpfc_fcf_inuse(phba))
6144                 return;
6145
6146         lpfc_unregister_fcf_rescan(phba);
6147 }
6148
6149 /**
6150  * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
6151  * @phba: Pointer to hba context object.
6152  * @buff: Buffer containing the FCF connection table as in the config
6153  *         region.
6154  * This function create driver data structure for the FCF connection
6155  * record table read from config region 23.
6156  */
6157 static void
6158 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
6159         uint8_t *buff)
6160 {
6161         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
6162         struct lpfc_fcf_conn_hdr *conn_hdr;
6163         struct lpfc_fcf_conn_rec *conn_rec;
6164         uint32_t record_count;
6165         int i;
6166
6167         /* Free the current connect table */
6168         list_for_each_entry_safe(conn_entry, next_conn_entry,
6169                 &phba->fcf_conn_rec_list, list) {
6170                 list_del_init(&conn_entry->list);
6171                 kfree(conn_entry);
6172         }
6173
6174         conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
6175         record_count = conn_hdr->length * sizeof(uint32_t)/
6176                 sizeof(struct lpfc_fcf_conn_rec);
6177
6178         conn_rec = (struct lpfc_fcf_conn_rec *)
6179                 (buff + sizeof(struct lpfc_fcf_conn_hdr));
6180
6181         for (i = 0; i < record_count; i++) {
6182                 if (!(conn_rec[i].flags & FCFCNCT_VALID))
6183                         continue;
6184                 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
6185                         GFP_KERNEL);
6186                 if (!conn_entry) {
6187                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6188                                 "2566 Failed to allocate connection"
6189                                 " table entry\n");
6190                         return;
6191                 }
6192
6193                 memcpy(&conn_entry->conn_rec, &conn_rec[i],
6194                         sizeof(struct lpfc_fcf_conn_rec));
6195                 list_add_tail(&conn_entry->list,
6196                         &phba->fcf_conn_rec_list);
6197         }
6198
6199         if (!list_empty(&phba->fcf_conn_rec_list)) {
6200                 i = 0;
6201                 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list,
6202                                     list) {
6203                         conn_rec = &conn_entry->conn_rec;
6204                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6205                                         "3345 FCF connection list rec[%02d]: "
6206                                         "flags:x%04x, vtag:x%04x, "
6207                                         "fabric_name:x%02x:%02x:%02x:%02x:"
6208                                         "%02x:%02x:%02x:%02x, "
6209                                         "switch_name:x%02x:%02x:%02x:%02x:"
6210                                         "%02x:%02x:%02x:%02x\n", i++,
6211                                         conn_rec->flags, conn_rec->vlan_tag,
6212                                         conn_rec->fabric_name[0],
6213                                         conn_rec->fabric_name[1],
6214                                         conn_rec->fabric_name[2],
6215                                         conn_rec->fabric_name[3],
6216                                         conn_rec->fabric_name[4],
6217                                         conn_rec->fabric_name[5],
6218                                         conn_rec->fabric_name[6],
6219                                         conn_rec->fabric_name[7],
6220                                         conn_rec->switch_name[0],
6221                                         conn_rec->switch_name[1],
6222                                         conn_rec->switch_name[2],
6223                                         conn_rec->switch_name[3],
6224                                         conn_rec->switch_name[4],
6225                                         conn_rec->switch_name[5],
6226                                         conn_rec->switch_name[6],
6227                                         conn_rec->switch_name[7]);
6228                 }
6229         }
6230 }
6231
6232 /**
6233  * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
6234  * @phba: Pointer to hba context object.
6235  * @buff: Buffer containing the FCoE parameter data structure.
6236  *
6237  *  This function update driver data structure with config
6238  *  parameters read from config region 23.
6239  */
6240 static void
6241 lpfc_read_fcoe_param(struct lpfc_hba *phba,
6242                         uint8_t *buff)
6243 {
6244         struct lpfc_fip_param_hdr *fcoe_param_hdr;
6245         struct lpfc_fcoe_params *fcoe_param;
6246
6247         fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
6248                 buff;
6249         fcoe_param = (struct lpfc_fcoe_params *)
6250                 (buff + sizeof(struct lpfc_fip_param_hdr));
6251
6252         if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
6253                 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
6254                 return;
6255
6256         if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
6257                 phba->valid_vlan = 1;
6258                 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
6259                         0xFFF;
6260         }
6261
6262         phba->fc_map[0] = fcoe_param->fc_map[0];
6263         phba->fc_map[1] = fcoe_param->fc_map[1];
6264         phba->fc_map[2] = fcoe_param->fc_map[2];
6265         return;
6266 }
6267
6268 /**
6269  * lpfc_get_rec_conf23 - Get a record type in config region data.
6270  * @buff: Buffer containing config region 23 data.
6271  * @size: Size of the data buffer.
6272  * @rec_type: Record type to be searched.
6273  *
6274  * This function searches config region data to find the beginning
6275  * of the record specified by record_type. If record found, this
6276  * function return pointer to the record else return NULL.
6277  */
6278 static uint8_t *
6279 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
6280 {
6281         uint32_t offset = 0, rec_length;
6282
6283         if ((buff[0] == LPFC_REGION23_LAST_REC) ||
6284                 (size < sizeof(uint32_t)))
6285                 return NULL;
6286
6287         rec_length = buff[offset + 1];
6288
6289         /*
6290          * One TLV record has one word header and number of data words
6291          * specified in the rec_length field of the record header.
6292          */
6293         while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
6294                 <= size) {
6295                 if (buff[offset] == rec_type)
6296                         return &buff[offset];
6297
6298                 if (buff[offset] == LPFC_REGION23_LAST_REC)
6299                         return NULL;
6300
6301                 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
6302                 rec_length = buff[offset + 1];
6303         }
6304         return NULL;
6305 }
6306
6307 /**
6308  * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
6309  * @phba: Pointer to lpfc_hba data structure.
6310  * @buff: Buffer containing config region 23 data.
6311  * @size: Size of the data buffer.
6312  *
6313  * This function parses the FCoE config parameters in config region 23 and
6314  * populate driver data structure with the parameters.
6315  */
6316 void
6317 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
6318                 uint8_t *buff,
6319                 uint32_t size)
6320 {
6321         uint32_t offset = 0, rec_length;
6322         uint8_t *rec_ptr;
6323
6324         /*
6325          * If data size is less than 2 words signature and version cannot be
6326          * verified.
6327          */
6328         if (size < 2*sizeof(uint32_t))
6329                 return;
6330
6331         /* Check the region signature first */
6332         if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
6333                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6334                         "2567 Config region 23 has bad signature\n");
6335                 return;
6336         }
6337
6338         offset += 4;
6339
6340         /* Check the data structure version */
6341         if (buff[offset] != LPFC_REGION23_VERSION) {
6342                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6343                         "2568 Config region 23 has bad version\n");
6344                 return;
6345         }
6346         offset += 4;
6347
6348         rec_length = buff[offset + 1];
6349
6350         /* Read FCoE param record */
6351         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
6352                         size - offset, FCOE_PARAM_TYPE);
6353         if (rec_ptr)
6354                 lpfc_read_fcoe_param(phba, rec_ptr);
6355
6356         /* Read FCF connection table */
6357         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
6358                 size - offset, FCOE_CONN_TBL_TYPE);
6359         if (rec_ptr)
6360                 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
6361
6362 }