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) 2004-2009 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/slab.h>
  24 #include <linux/pci.h>
  25 #include <linux/kthread.h>
  26 #include <linux/interrupt.h>
  27
  28 #include <scsi/scsi.h>
  29 #include <scsi/scsi_device.h>
  30 #include <scsi/scsi_host.h>
  31 #include <scsi/scsi_transport_fc.h>
  32
  33 #include "lpfc_hw4.h"
  34 #include "lpfc_hw.h"
  35 #include "lpfc_nl.h"
  36 #include "lpfc_disc.h"
  37 #include "lpfc_sli.h"
  38 #include "lpfc_sli4.h"
  39 #include "lpfc_scsi.h"
  40 #include "lpfc.h"
  41 #include "lpfc_logmsg.h"
  42 #include "lpfc_crtn.h"
  43 #include "lpfc_vport.h"
  44 #include "lpfc_debugfs.h"
  45
  46 /* AlpaArray for assignment of scsid for scan-down and bind_method */
  47 static uint8_t lpfcAlpaArray[] = {
  48         0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
  49         0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
  50         0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
  51         0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
  52         0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
  53         0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
  54         0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
  55         0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
  56         0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
  57         0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
  58         0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
  59         0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
  60         0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
  61 };
  62
  63 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
  64 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
  65 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
  66
  67 void
  68 lpfc_terminate_rport_io(struct fc_rport *rport)
  69 {
  70         struct lpfc_rport_data *rdata;
  71         struct lpfc_nodelist * ndlp;
  72         struct lpfc_hba *phba;
  73
  74         rdata = rport->dd_data;
  75         ndlp = rdata->pnode;
  76
  77         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
  78                 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
  79                         printk(KERN_ERR "Cannot find remote node"
  80                         " to terminate I/O Data x%x\n",
  81                         rport->port_id);
  82                 return;
  83         }
  84
  85         phba  = ndlp->phba;
  86
  87         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
  88                 "rport terminate: sid:x%x did:x%x flg:x%x",
  89                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
  90
  91         if (ndlp->nlp_sid != NLP_NO_SID) {
  92                 lpfc_sli_abort_iocb(ndlp->vport,
  93                         &phba->sli.ring[phba->sli.fcp_ring],
  94                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
  95         }
  96 }
  97
  98 /*
  99  * This function will be called when dev_loss_tmo fire.
 100  */
 101 void
 102 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
 103 {
 104         struct lpfc_rport_data *rdata;
 105         struct lpfc_nodelist * ndlp;
 106         struct lpfc_vport *vport;
 107         struct lpfc_hba   *phba;
 108         struct lpfc_work_evt *evtp;
 109         int  put_node;
 110         int  put_rport;
 111
 112         rdata = rport->dd_data;
 113         ndlp = rdata->pnode;
 114         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
 115                 return;
 116
 117         vport = ndlp->vport;
 118         phba  = vport->phba;
 119
 120         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 121                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
 122                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 123
 124         /* Don't defer this if we are in the process of deleting the vport
 125          * or unloading the driver. The unload will cleanup the node
 126          * appropriately we just need to cleanup the ndlp rport info here.
 127          */
 128         if (vport->load_flag & FC_UNLOADING) {
 129                 put_node = rdata->pnode != NULL;
 130                 put_rport = ndlp->rport != NULL;
 131                 rdata->pnode = NULL;
 132                 ndlp->rport = NULL;
 133                 if (put_node)
 134                         lpfc_nlp_put(ndlp);
 135                 if (put_rport)
 136                         put_device(&rport->dev);
 137                 return;
 138         }
 139
 140         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 141                 return;
 142
 143         evtp = &ndlp->dev_loss_evt;
 144
 145         if (!list_empty(&evtp->evt_listp))
 146                 return;
 147
 148         spin_lock_irq(&phba->hbalock);
 149         /* We need to hold the node by incrementing the reference
 150          * count until this queued work is done
 151          */
 152         evtp->evt_arg1  = lpfc_nlp_get(ndlp);
 153         if (evtp->evt_arg1) {
 154                 evtp->evt = LPFC_EVT_DEV_LOSS;
 155                 list_add_tail(&evtp->evt_listp, &phba->work_list);
 156                 lpfc_worker_wake_up(phba);
 157         }
 158         spin_unlock_irq(&phba->hbalock);
 159
 160         return;
 161 }
 162
 163 /*
 164  * This function is called from the worker thread when dev_loss_tmo
 165  * expire.
 166  */
 167 static void
 168 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 169 {
 170         struct lpfc_rport_data *rdata;
 171         struct fc_rport   *rport;
 172         struct lpfc_vport *vport;
 173         struct lpfc_hba   *phba;
 174         uint8_t *name;
 175         int  put_node;
 176         int  put_rport;
 177         int warn_on = 0;
 178
 179         rport = ndlp->rport;
 180
 181         if (!rport)
 182                 return;
 183
 184         rdata = rport->dd_data;
 185         name = (uint8_t *) &ndlp->nlp_portname;
 186         vport = ndlp->vport;
 187         phba  = vport->phba;
 188
 189         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 190                 "rport devlosstmo:did:x%x type:x%x id:x%x",
 191                 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
 192
 193         /* Don't defer this if we are in the process of deleting the vport
 194          * or unloading the driver. The unload will cleanup the node
 195          * appropriately we just need to cleanup the ndlp rport info here.
 196          */
 197         if (vport->load_flag & FC_UNLOADING) {
 198                 if (ndlp->nlp_sid != NLP_NO_SID) {
 199                         /* flush the target */
 200                         lpfc_sli_abort_iocb(vport,
 201                                         &phba->sli.ring[phba->sli.fcp_ring],
 202                                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 203                 }
 204                 put_node = rdata->pnode != NULL;
 205                 put_rport = ndlp->rport != NULL;
 206                 rdata->pnode = NULL;
 207                 ndlp->rport = NULL;
 208                 if (put_node)
 209                         lpfc_nlp_put(ndlp);
 210                 if (put_rport)
 211                         put_device(&rport->dev);
 212                 return;
 213         }
 214
 215         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
 216                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 217                                  "0284 Devloss timeout Ignored on "
 218                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 219                                  "NPort x%x\n",
 220                                  *name, *(name+1), *(name+2), *(name+3),
 221                                  *(name+4), *(name+5), *(name+6), *(name+7),
 222                                  ndlp->nlp_DID);
 223                 return;
 224         }
 225
 226         if (ndlp->nlp_type & NLP_FABRIC) {
 227                 /* We will clean up these Nodes in linkup */
 228                 put_node = rdata->pnode != NULL;
 229                 put_rport = ndlp->rport != NULL;
 230                 rdata->pnode = NULL;
 231                 ndlp->rport = NULL;
 232                 if (put_node)
 233                         lpfc_nlp_put(ndlp);
 234                 if (put_rport)
 235                         put_device(&rport->dev);
 236                 return;
 237         }
 238
 239         if (ndlp->nlp_sid != NLP_NO_SID) {
 240                 warn_on = 1;
 241                 /* flush the target */
 242                 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
 243                                     ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 244         }
 245
 246         if (warn_on) {
 247                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 248                                  "0203 Devloss timeout on "
 249                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 250                                  "NPort x%06x Data: x%x x%x x%x\n",
 251                                  *name, *(name+1), *(name+2), *(name+3),
 252                                  *(name+4), *(name+5), *(name+6), *(name+7),
 253                                  ndlp->nlp_DID, ndlp->nlp_flag,
 254                                  ndlp->nlp_state, ndlp->nlp_rpi);
 255         } else {
 256                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 257                                  "0204 Devloss timeout on "
 258                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 259                                  "NPort x%06x Data: x%x x%x x%x\n",
 260                                  *name, *(name+1), *(name+2), *(name+3),
 261                                  *(name+4), *(name+5), *(name+6), *(name+7),
 262                                  ndlp->nlp_DID, ndlp->nlp_flag,
 263                                  ndlp->nlp_state, ndlp->nlp_rpi);
 264         }
 265
 266         put_node = rdata->pnode != NULL;
 267         put_rport = ndlp->rport != NULL;
 268         rdata->pnode = NULL;
 269         ndlp->rport = NULL;
 270         if (put_node)
 271                 lpfc_nlp_put(ndlp);
 272         if (put_rport)
 273                 put_device(&rport->dev);
 274
 275         if (!(vport->load_flag & FC_UNLOADING) &&
 276             !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
 277             !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 278             (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
 279             (ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) &&
 280             (ndlp->nlp_state != NLP_STE_PRLI_ISSUE))
 281                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 282
 283         lpfc_unregister_unused_fcf(phba);
 284 }
 285
 286 /**
 287  * lpfc_alloc_fast_evt - Allocates data structure for posting event
 288  * @phba: Pointer to hba context object.
 289  *
 290  * This function is called from the functions which need to post
 291  * events from interrupt context. This function allocates data
 292  * structure required for posting event. It also keeps track of
 293  * number of events pending and prevent event storm when there are
 294  * too many events.
 295  **/
 296 struct lpfc_fast_path_event *
 297 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
 298         struct lpfc_fast_path_event *ret;
 299
 300         /* If there are lot of fast event do not exhaust memory due to this */
 301         if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
 302                 return NULL;
 303
 304         ret = kzalloc(sizeof(struct lpfc_fast_path_event),
 305                         GFP_ATOMIC);
 306         if (ret) {
 307                 atomic_inc(&phba->fast_event_count);
 308                 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
 309                 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
 310         }
 311         return ret;
 312 }
 313
 314 /**
 315  * lpfc_free_fast_evt - Frees event data structure
 316  * @phba: Pointer to hba context object.
 317  * @evt:  Event object which need to be freed.
 318  *
 319  * This function frees the data structure required for posting
 320  * events.
 321  **/
 322 void
 323 lpfc_free_fast_evt(struct lpfc_hba *phba,
 324                 struct lpfc_fast_path_event *evt) {
 325
 326         atomic_dec(&phba->fast_event_count);
 327         kfree(evt);
 328 }
 329
 330 /**
 331  * lpfc_send_fastpath_evt - Posts events generated from fast path
 332  * @phba: Pointer to hba context object.
 333  * @evtp: Event data structure.
 334  *
 335  * This function is called from worker thread, when the interrupt
 336  * context need to post an event. This function posts the event
 337  * to fc transport netlink interface.
 338  **/
 339 static void
 340 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
 341                 struct lpfc_work_evt *evtp)
 342 {
 343         unsigned long evt_category, evt_sub_category;
 344         struct lpfc_fast_path_event *fast_evt_data;
 345         char *evt_data;
 346         uint32_t evt_data_size;
 347         struct Scsi_Host *shost;
 348
 349         fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
 350                 work_evt);
 351
 352         evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
 353         evt_sub_category = (unsigned long) fast_evt_data->un.
 354                         fabric_evt.subcategory;
 355         shost = lpfc_shost_from_vport(fast_evt_data->vport);
 356         if (evt_category == FC_REG_FABRIC_EVENT) {
 357                 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
 358                         evt_data = (char *) &fast_evt_data->un.read_check_error;
 359                         evt_data_size = sizeof(fast_evt_data->un.
 360                                 read_check_error);
 361                 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
 362                         (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
 363                         evt_data = (char *) &fast_evt_data->un.fabric_evt;
 364                         evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
 365                 } else {
 366                         lpfc_free_fast_evt(phba, fast_evt_data);
 367                         return;
 368                 }
 369         } else if (evt_category == FC_REG_SCSI_EVENT) {
 370                 switch (evt_sub_category) {
 371                 case LPFC_EVENT_QFULL:
 372                 case LPFC_EVENT_DEVBSY:
 373                         evt_data = (char *) &fast_evt_data->un.scsi_evt;
 374                         evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
 375                         break;
 376                 case LPFC_EVENT_CHECK_COND:
 377                         evt_data = (char *) &fast_evt_data->un.check_cond_evt;
 378                         evt_data_size =  sizeof(fast_evt_data->un.
 379                                 check_cond_evt);
 380                         break;
 381                 case LPFC_EVENT_VARQUEDEPTH:
 382                         evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
 383                         evt_data_size = sizeof(fast_evt_data->un.
 384                                 queue_depth_evt);
 385                         break;
 386                 default:
 387                         lpfc_free_fast_evt(phba, fast_evt_data);
 388                         return;
 389                 }
 390         } else {
 391                 lpfc_free_fast_evt(phba, fast_evt_data);
 392                 return;
 393         }
 394
 395         fc_host_post_vendor_event(shost,
 396                 fc_get_event_number(),
 397                 evt_data_size,
 398                 evt_data,
 399                 LPFC_NL_VENDOR_ID);
 400
 401         lpfc_free_fast_evt(phba, fast_evt_data);
 402         return;
 403 }
 404
 405 static void
 406 lpfc_work_list_done(struct lpfc_hba *phba)
 407 {
 408         struct lpfc_work_evt  *evtp = NULL;
 409         struct lpfc_nodelist  *ndlp;
 410         int free_evt;
 411
 412         spin_lock_irq(&phba->hbalock);
 413         while (!list_empty(&phba->work_list)) {
 414                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 415                                  evt_listp);
 416                 spin_unlock_irq(&phba->hbalock);
 417                 free_evt = 1;
 418                 switch (evtp->evt) {
 419                 case LPFC_EVT_ELS_RETRY:
 420                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 421                         lpfc_els_retry_delay_handler(ndlp);
 422                         free_evt = 0; /* evt is part of ndlp */
 423                         /* decrement the node reference count held
 424                          * for this queued work
 425                          */
 426                         lpfc_nlp_put(ndlp);
 427                         break;
 428                 case LPFC_EVT_DEV_LOSS:
 429                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 430                         lpfc_dev_loss_tmo_handler(ndlp);
 431                         free_evt = 0;
 432                         /* decrement the node reference count held for
 433                          * this queued work
 434                          */
 435                         lpfc_nlp_put(ndlp);
 436                         break;
 437                 case LPFC_EVT_ONLINE:
 438                         if (phba->link_state < LPFC_LINK_DOWN)
 439                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 440                         else
 441                                 *(int *) (evtp->evt_arg1) = 0;
 442                         complete((struct completion *)(evtp->evt_arg2));
 443                         break;
 444                 case LPFC_EVT_OFFLINE_PREP:
 445                         if (phba->link_state >= LPFC_LINK_DOWN)
 446                                 lpfc_offline_prep(phba);
 447                         *(int *)(evtp->evt_arg1) = 0;
 448                         complete((struct completion *)(evtp->evt_arg2));
 449                         break;
 450                 case LPFC_EVT_OFFLINE:
 451                         lpfc_offline(phba);
 452                         lpfc_sli_brdrestart(phba);
 453                         *(int *)(evtp->evt_arg1) =
 454                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 455                         lpfc_unblock_mgmt_io(phba);
 456                         complete((struct completion *)(evtp->evt_arg2));
 457                         break;
 458                 case LPFC_EVT_WARM_START:
 459                         lpfc_offline(phba);
 460                         lpfc_reset_barrier(phba);
 461                         lpfc_sli_brdreset(phba);
 462                         lpfc_hba_down_post(phba);
 463                         *(int *)(evtp->evt_arg1) =
 464                                 lpfc_sli_brdready(phba, HS_MBRDY);
 465                         lpfc_unblock_mgmt_io(phba);
 466                         complete((struct completion *)(evtp->evt_arg2));
 467                         break;
 468                 case LPFC_EVT_KILL:
 469                         lpfc_offline(phba);
 470                         *(int *)(evtp->evt_arg1)
 471                                 = (phba->pport->stopped)
 472                                         ? 0 : lpfc_sli_brdkill(phba);
 473                         lpfc_unblock_mgmt_io(phba);
 474                         complete((struct completion *)(evtp->evt_arg2));
 475                         break;
 476                 case LPFC_EVT_FASTPATH_MGMT_EVT:
 477                         lpfc_send_fastpath_evt(phba, evtp);
 478                         free_evt = 0;
 479                         break;
 480                 case LPFC_EVT_RESET_HBA:
 481                         if (!(phba->pport->load_flag & FC_UNLOADING))
 482                                 lpfc_reset_hba(phba);
 483                         break;
 484                 }
 485                 if (free_evt)
 486                         kfree(evtp);
 487                 spin_lock_irq(&phba->hbalock);
 488         }
 489         spin_unlock_irq(&phba->hbalock);
 490
 491 }
 492
 493 static void
 494 lpfc_work_done(struct lpfc_hba *phba)
 495 {
 496         struct lpfc_sli_ring *pring;
 497         uint32_t ha_copy, status, control, work_port_events;
 498         struct lpfc_vport **vports;
 499         struct lpfc_vport *vport;
 500         int i;
 501
 502         spin_lock_irq(&phba->hbalock);
 503         ha_copy = phba->work_ha;
 504         phba->work_ha = 0;
 505         spin_unlock_irq(&phba->hbalock);
 506
 507         /* First, try to post the next mailbox command to SLI4 device */
 508         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
 509                 lpfc_sli4_post_async_mbox(phba);
 510
 511         if (ha_copy & HA_ERATT)
 512                 /* Handle the error attention event */
 513                 lpfc_handle_eratt(phba);
 514
 515         if (ha_copy & HA_MBATT)
 516                 lpfc_sli_handle_mb_event(phba);
 517
 518         if (ha_copy & HA_LATT)
 519                 lpfc_handle_latt(phba);
 520
 521         /* Process SLI4 events */
 522         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
 523                 if (phba->hba_flag & FCP_XRI_ABORT_EVENT)
 524                         lpfc_sli4_fcp_xri_abort_event_proc(phba);
 525                 if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
 526                         lpfc_sli4_els_xri_abort_event_proc(phba);
 527                 if (phba->hba_flag & ASYNC_EVENT)
 528                         lpfc_sli4_async_event_proc(phba);
 529                 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
 530                         spin_lock_irq(&phba->hbalock);
 531                         phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
 532                         spin_unlock_irq(&phba->hbalock);
 533                         lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
 534                 }
 535                 if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
 536                         lpfc_sli4_fcf_redisc_event_proc(phba);
 537         }
 538
 539         vports = lpfc_create_vport_work_array(phba);
 540         if (vports != NULL)
 541                 for (i = 0; i <= phba->max_vports; i++) {
 542                         /*
 543                          * We could have no vports in array if unloading, so if
 544                          * this happens then just use the pport
 545                          */
 546                         if (vports[i] == NULL && i == 0)
 547                                 vport = phba->pport;
 548                         else
 549                                 vport = vports[i];
 550                         if (vport == NULL)
 551                                 break;
 552                         spin_lock_irq(&vport->work_port_lock);
 553                         work_port_events = vport->work_port_events;
 554                         vport->work_port_events &= ~work_port_events;
 555                         spin_unlock_irq(&vport->work_port_lock);
 556                         if (work_port_events & WORKER_DISC_TMO)
 557                                 lpfc_disc_timeout_handler(vport);
 558                         if (work_port_events & WORKER_ELS_TMO)
 559                                 lpfc_els_timeout_handler(vport);
 560                         if (work_port_events & WORKER_HB_TMO)
 561                                 lpfc_hb_timeout_handler(phba);
 562                         if (work_port_events & WORKER_MBOX_TMO)
 563                                 lpfc_mbox_timeout_handler(phba);
 564                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
 565                                 lpfc_unblock_fabric_iocbs(phba);
 566                         if (work_port_events & WORKER_FDMI_TMO)
 567                                 lpfc_fdmi_timeout_handler(vport);
 568                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
 569                                 lpfc_ramp_down_queue_handler(phba);
 570                         if (work_port_events & WORKER_RAMP_UP_QUEUE)
 571                                 lpfc_ramp_up_queue_handler(phba);
 572                 }
 573         lpfc_destroy_vport_work_array(phba, vports);
 574
 575         pring = &phba->sli.ring[LPFC_ELS_RING];
 576         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
 577         status >>= (4*LPFC_ELS_RING);
 578         if ((status & HA_RXMASK) ||
 579             (pring->flag & LPFC_DEFERRED_RING_EVENT) ||
 580             (phba->hba_flag & HBA_SP_QUEUE_EVT)) {
 581                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
 582                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
 583                         /* Set the lpfc data pending flag */
 584                         set_bit(LPFC_DATA_READY, &phba->data_flags);
 585                 } else {
 586                         pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
 587                         lpfc_sli_handle_slow_ring_event(phba, pring,
 588                                                         (status &
 589                                                          HA_RXMASK));
 590                 }
 591                 if ((phba->sli_rev == LPFC_SLI_REV4) && pring->txq_cnt)
 592                         lpfc_drain_txq(phba);
 593                 /*
 594                  * Turn on Ring interrupts
 595                  */
 596                 if (phba->sli_rev <= LPFC_SLI_REV3) {
 597                         spin_lock_irq(&phba->hbalock);
 598                         control = readl(phba->HCregaddr);
 599                         if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
 600                                 lpfc_debugfs_slow_ring_trc(phba,
 601                                         "WRK Enable ring: cntl:x%x hacopy:x%x",
 602                                         control, ha_copy, 0);
 603
 604                                 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
 605                                 writel(control, phba->HCregaddr);
 606                                 readl(phba->HCregaddr); /* flush */
 607                         } else {
 608                                 lpfc_debugfs_slow_ring_trc(phba,
 609                                         "WRK Ring ok:     cntl:x%x hacopy:x%x",
 610                                         control, ha_copy, 0);
 611                         }
 612                         spin_unlock_irq(&phba->hbalock);
 613                 }
 614         }
 615         lpfc_work_list_done(phba);
 616 }
 617
 618 int
 619 lpfc_do_work(void *p)
 620 {
 621         struct lpfc_hba *phba = p;
 622         int rc;
 623
 624         set_user_nice(current, -20);
 625         phba->data_flags = 0;
 626
 627         while (!kthread_should_stop()) {
 628                 /* wait and check worker queue activities */
 629                 rc = wait_event_interruptible(phba->work_waitq,
 630                                         (test_and_clear_bit(LPFC_DATA_READY,
 631                                                             &phba->data_flags)
 632                                          || kthread_should_stop()));
 633                 /* Signal wakeup shall terminate the worker thread */
 634                 if (rc) {
 635                         lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
 636                                         "0433 Wakeup on signal: rc=x%x\n", rc);
 637                         break;
 638                 }
 639
 640                 /* Attend pending lpfc data processing */
 641                 lpfc_work_done(phba);
 642         }
 643         phba->worker_thread = NULL;
 644         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
 645                         "0432 Worker thread stopped.\n");
 646         return 0;
 647 }
 648
 649 /*
 650  * This is only called to handle FC worker events. Since this a rare
 651  * occurance, we allocate a struct lpfc_work_evt structure here instead of
 652  * embedding it in the IOCB.
 653  */
 654 int
 655 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
 656                       uint32_t evt)
 657 {
 658         struct lpfc_work_evt  *evtp;
 659         unsigned long flags;
 660
 661         /*
 662          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
 663          * be queued to worker thread for processing
 664          */
 665         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
 666         if (!evtp)
 667                 return 0;
 668
 669         evtp->evt_arg1  = arg1;
 670         evtp->evt_arg2  = arg2;
 671         evtp->evt       = evt;
 672
 673         spin_lock_irqsave(&phba->hbalock, flags);
 674         list_add_tail(&evtp->evt_listp, &phba->work_list);
 675         spin_unlock_irqrestore(&phba->hbalock, flags);
 676
 677         lpfc_worker_wake_up(phba);
 678
 679         return 1;
 680 }
 681
 682 void
 683 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
 684 {
 685         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 686         struct lpfc_hba  *phba = vport->phba;
 687         struct lpfc_nodelist *ndlp, *next_ndlp;
 688         int  rc;
 689
 690         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
 691                 if (!NLP_CHK_NODE_ACT(ndlp))
 692                         continue;
 693                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 694                         continue;
 695                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
 696                         ((vport->port_type == LPFC_NPIV_PORT) &&
 697                         (ndlp->nlp_DID == NameServer_DID)))
 698                         lpfc_unreg_rpi(vport, ndlp);
 699
 700                 /* Leave Fabric nodes alone on link down */
 701                 if ((phba->sli_rev < LPFC_SLI_REV4) &&
 702                     (!remove && ndlp->nlp_type & NLP_FABRIC))
 703                         continue;
 704                 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
 705                                              remove
 706                                              ? NLP_EVT_DEVICE_RM
 707                                              : NLP_EVT_DEVICE_RECOVERY);
 708         }
 709         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
 710                 lpfc_mbx_unreg_vpi(vport);
 711                 spin_lock_irq(shost->host_lock);
 712                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
 713                 spin_unlock_irq(shost->host_lock);
 714         }
 715 }
 716
 717 void
 718 lpfc_port_link_failure(struct lpfc_vport *vport)
 719 {
 720         lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
 721
 722         /* Cleanup any outstanding received buffers */
 723         lpfc_cleanup_rcv_buffers(vport);
 724
 725         /* Cleanup any outstanding RSCN activity */
 726         lpfc_els_flush_rscn(vport);
 727
 728         /* Cleanup any outstanding ELS commands */
 729         lpfc_els_flush_cmd(vport);
 730
 731         lpfc_cleanup_rpis(vport, 0);
 732
 733         /* Turn off discovery timer if its running */
 734         lpfc_can_disctmo(vport);
 735 }
 736
 737 void
 738 lpfc_linkdown_port(struct lpfc_vport *vport)
 739 {
 740         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 741
 742         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
 743
 744         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 745                 "Link Down:       state:x%x rtry:x%x flg:x%x",
 746                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
 747
 748         lpfc_port_link_failure(vport);
 749
 750 }
 751
 752 int
 753 lpfc_linkdown(struct lpfc_hba *phba)
 754 {
 755         struct lpfc_vport *vport = phba->pport;
 756         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 757         struct lpfc_vport **vports;
 758         LPFC_MBOXQ_t          *mb;
 759         int i;
 760
 761         if (phba->link_state == LPFC_LINK_DOWN)
 762                 return 0;
 763
 764         /* Block all SCSI stack I/Os */
 765         lpfc_scsi_dev_block(phba);
 766
 767         spin_lock_irq(&phba->hbalock);
 768         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
 769         spin_unlock_irq(&phba->hbalock);
 770         if (phba->link_state > LPFC_LINK_DOWN) {
 771                 phba->link_state = LPFC_LINK_DOWN;
 772                 spin_lock_irq(shost->host_lock);
 773                 phba->pport->fc_flag &= ~FC_LBIT;
 774                 spin_unlock_irq(shost->host_lock);
 775         }
 776         vports = lpfc_create_vport_work_array(phba);
 777         if (vports != NULL)
 778                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
 779                         /* Issue a LINK DOWN event to all nodes */
 780                         lpfc_linkdown_port(vports[i]);
 781                 }
 782         lpfc_destroy_vport_work_array(phba, vports);
 783         /* Clean up any firmware default rpi's */
 784         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 785         if (mb) {
 786                 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
 787                 mb->vport = vport;
 788                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 789                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 790                     == MBX_NOT_FINISHED) {
 791                         mempool_free(mb, phba->mbox_mem_pool);
 792                 }
 793         }
 794
 795         /* Setup myDID for link up if we are in pt2pt mode */
 796         if (phba->pport->fc_flag & FC_PT2PT) {
 797                 phba->pport->fc_myDID = 0;
 798                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 799                 if (mb) {
 800                         lpfc_config_link(phba, mb);
 801                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 802                         mb->vport = vport;
 803                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 804                             == MBX_NOT_FINISHED) {
 805                                 mempool_free(mb, phba->mbox_mem_pool);
 806                         }
 807                 }
 808                 spin_lock_irq(shost->host_lock);
 809                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
 810                 spin_unlock_irq(shost->host_lock);
 811         }
 812
 813         return 0;
 814 }
 815
 816 static void
 817 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
 818 {
 819         struct lpfc_nodelist *ndlp;
 820
 821         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
 822                 if (!NLP_CHK_NODE_ACT(ndlp))
 823                         continue;
 824                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 825                         continue;
 826                 if (ndlp->nlp_type & NLP_FABRIC) {
 827                         /* On Linkup its safe to clean up the ndlp
 828                          * from Fabric connections.
 829                          */
 830                         if (ndlp->nlp_DID != Fabric_DID)
 831                                 lpfc_unreg_rpi(vport, ndlp);
 832                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 833                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
 834                         /* Fail outstanding IO now since device is
 835                          * marked for PLOGI.
 836                          */
 837                         lpfc_unreg_rpi(vport, ndlp);
 838                 }
 839         }
 840 }
 841
 842 static void
 843 lpfc_linkup_port(struct lpfc_vport *vport)
 844 {
 845         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 846         struct lpfc_hba  *phba = vport->phba;
 847
 848         if ((vport->load_flag & FC_UNLOADING) != 0)
 849                 return;
 850
 851         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 852                 "Link Up:         top:x%x speed:x%x flg:x%x",
 853                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
 854
 855         /* If NPIV is not enabled, only bring the physical port up */
 856         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 857                 (vport != phba->pport))
 858                 return;
 859
 860         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
 861
 862         spin_lock_irq(shost->host_lock);
 863         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
 864                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
 865         vport->fc_flag |= FC_NDISC_ACTIVE;
 866         vport->fc_ns_retry = 0;
 867         spin_unlock_irq(shost->host_lock);
 868
 869         if (vport->fc_flag & FC_LBIT)
 870                 lpfc_linkup_cleanup_nodes(vport);
 871
 872 }
 873
 874 static int
 875 lpfc_linkup(struct lpfc_hba *phba)
 876 {
 877         struct lpfc_vport **vports;
 878         int i;
 879
 880         phba->link_state = LPFC_LINK_UP;
 881
 882         /* Unblock fabric iocbs if they are blocked */
 883         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
 884         del_timer_sync(&phba->fabric_block_timer);
 885
 886         vports = lpfc_create_vport_work_array(phba);
 887         if (vports != NULL)
 888                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
 889                         lpfc_linkup_port(vports[i]);
 890         lpfc_destroy_vport_work_array(phba, vports);
 891         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 892             (phba->sli_rev < LPFC_SLI_REV4))
 893                 lpfc_issue_clear_la(phba, phba->pport);
 894
 895         return 0;
 896 }
 897
 898 /*
 899  * This routine handles processing a CLEAR_LA mailbox
 900  * command upon completion. It is setup in the LPFC_MBOXQ
 901  * as the completion routine when the command is
 902  * handed off to the SLI layer.
 903  */
 904 static void
 905 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 906 {
 907         struct lpfc_vport *vport = pmb->vport;
 908         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 909         struct lpfc_sli   *psli = &phba->sli;
 910         MAILBOX_t *mb = &pmb->u.mb;
 911         uint32_t control;
 912
 913         /* Since we don't do discovery right now, turn these off here */
 914         psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 915         psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 916         psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 917
 918         /* Check for error */
 919         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
 920                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
 921                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 922                                  "0320 CLEAR_LA mbxStatus error x%x hba "
 923                                  "state x%x\n",
 924                                  mb->mbxStatus, vport->port_state);
 925                 phba->link_state = LPFC_HBA_ERROR;
 926                 goto out;
 927         }
 928
 929         if (vport->port_type == LPFC_PHYSICAL_PORT)
 930                 phba->link_state = LPFC_HBA_READY;
 931
 932         spin_lock_irq(&phba->hbalock);
 933         psli->sli_flag |= LPFC_PROCESS_LA;
 934         control = readl(phba->HCregaddr);
 935         control |= HC_LAINT_ENA;
 936         writel(control, phba->HCregaddr);
 937         readl(phba->HCregaddr); /* flush */
 938         spin_unlock_irq(&phba->hbalock);
 939         mempool_free(pmb, phba->mbox_mem_pool);
 940         return;
 941
 942 out:
 943         /* Device Discovery completes */
 944         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 945                          "0225 Device Discovery completes\n");
 946         mempool_free(pmb, phba->mbox_mem_pool);
 947
 948         spin_lock_irq(shost->host_lock);
 949         vport->fc_flag &= ~FC_ABORT_DISCOVERY;
 950         spin_unlock_irq(shost->host_lock);
 951
 952         lpfc_can_disctmo(vport);
 953
 954         /* turn on Link Attention interrupts */
 955
 956         spin_lock_irq(&phba->hbalock);
 957         psli->sli_flag |= LPFC_PROCESS_LA;
 958         control = readl(phba->HCregaddr);
 959         control |= HC_LAINT_ENA;
 960         writel(control, phba->HCregaddr);
 961         readl(phba->HCregaddr); /* flush */
 962         spin_unlock_irq(&phba->hbalock);
 963
 964         return;
 965 }
 966
 967
 968 static void
 969 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 970 {
 971         struct lpfc_vport *vport = pmb->vport;
 972
 973         if (pmb->u.mb.mbxStatus)
 974                 goto out;
 975
 976         mempool_free(pmb, phba->mbox_mem_pool);
 977
 978         if (phba->fc_topology == TOPOLOGY_LOOP &&
 979             vport->fc_flag & FC_PUBLIC_LOOP &&
 980             !(vport->fc_flag & FC_LBIT)) {
 981                         /* Need to wait for FAN - use discovery timer
 982                          * for timeout.  port_state is identically
 983                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
 984                          */
 985                         lpfc_set_disctmo(vport);
 986                         return;
 987         }
 988
 989         /* Start discovery by sending a FLOGI. port_state is identically
 990          * LPFC_FLOGI while waiting for FLOGI cmpl
 991          */
 992         if (vport->port_state != LPFC_FLOGI) {
 993                 lpfc_initial_flogi(vport);
 994         }
 995         return;
 996
 997 out:
 998         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 999                          "0306 CONFIG_LINK mbxStatus error x%x "
1000                          "HBA state x%x\n",
1001                          pmb->u.mb.mbxStatus, vport->port_state);
1002         mempool_free(pmb, phba->mbox_mem_pool);
1003
1004         lpfc_linkdown(phba);
1005
1006         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1007                          "0200 CONFIG_LINK bad hba state x%x\n",
1008                          vport->port_state);
1009
1010         lpfc_issue_clear_la(phba, vport);
1011         return;
1012 }
1013
1014 static void
1015 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1016 {
1017         struct lpfc_vport *vport = mboxq->vport;
1018
1019         if (mboxq->u.mb.mbxStatus) {
1020                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1021                          "2017 REG_FCFI mbxStatus error x%x "
1022                          "HBA state x%x\n",
1023                          mboxq->u.mb.mbxStatus, vport->port_state);
1024                 mempool_free(mboxq, phba->mbox_mem_pool);
1025                 return;
1026         }
1027
1028         /* Start FCoE discovery by sending a FLOGI. */
1029         phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1030         /* Set the FCFI registered flag */
1031         spin_lock_irq(&phba->hbalock);
1032         phba->fcf.fcf_flag |= FCF_REGISTERED;
1033         spin_unlock_irq(&phba->hbalock);
1034         /* If there is a pending FCoE event, restart FCF table scan. */
1035         if (lpfc_check_pending_fcoe_event(phba, 1)) {
1036                 mempool_free(mboxq, phba->mbox_mem_pool);
1037                 return;
1038         }
1039         spin_lock_irq(&phba->hbalock);
1040         phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1041         phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1042         spin_unlock_irq(&phba->hbalock);
1043         if (vport->port_state != LPFC_FLOGI)
1044                 lpfc_initial_flogi(vport);
1045
1046         mempool_free(mboxq, phba->mbox_mem_pool);
1047         return;
1048 }
1049
1050 /**
1051  * lpfc_fab_name_match - Check if the fcf fabric name match.
1052  * @fab_name: pointer to fabric name.
1053  * @new_fcf_record: pointer to fcf record.
1054  *
1055  * This routine compare the fcf record's fabric name with provided
1056  * fabric name. If the fabric name are identical this function
1057  * returns 1 else return 0.
1058  **/
1059 static uint32_t
1060 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1061 {
1062         if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1063                 return 0;
1064         if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1065                 return 0;
1066         if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1067                 return 0;
1068         if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1069                 return 0;
1070         if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1071                 return 0;
1072         if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1073                 return 0;
1074         if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1075                 return 0;
1076         if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1077                 return 0;
1078         return 1;
1079 }
1080
1081 /**
1082  * lpfc_sw_name_match - Check if the fcf switch name match.
1083  * @fab_name: pointer to fabric name.
1084  * @new_fcf_record: pointer to fcf record.
1085  *
1086  * This routine compare the fcf record's switch name with provided
1087  * switch name. If the switch name are identical this function
1088  * returns 1 else return 0.
1089  **/
1090 static uint32_t
1091 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1092 {
1093         if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1094                 return 0;
1095         if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1096                 return 0;
1097         if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1098                 return 0;
1099         if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1100                 return 0;
1101         if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1102                 return 0;
1103         if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1104                 return 0;
1105         if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1106                 return 0;
1107         if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1108                 return 0;
1109         return 1;
1110 }
1111
1112 /**
1113  * lpfc_mac_addr_match - Check if the fcf mac address match.
1114  * @mac_addr: pointer to mac address.
1115  * @new_fcf_record: pointer to fcf record.
1116  *
1117  * This routine compare the fcf record's mac address with HBA's
1118  * FCF mac address. If the mac addresses are identical this function
1119  * returns 1 else return 0.
1120  **/
1121 static uint32_t
1122 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1123 {
1124         if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1125                 return 0;
1126         if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1127                 return 0;
1128         if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1129                 return 0;
1130         if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1131                 return 0;
1132         if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1133                 return 0;
1134         if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1135                 return 0;
1136         return 1;
1137 }
1138
1139 static bool
1140 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1141 {
1142         return (curr_vlan_id == new_vlan_id);
1143 }
1144
1145 /**
1146  * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1147  * @fcf: pointer to driver fcf record.
1148  * @new_fcf_record: pointer to fcf record.
1149  *
1150  * This routine copies the FCF information from the FCF
1151  * record to lpfc_hba data structure.
1152  **/
1153 static void
1154 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1155                      struct fcf_record *new_fcf_record)
1156 {
1157         /* Fabric name */
1158         fcf_rec->fabric_name[0] =
1159                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1160         fcf_rec->fabric_name[1] =
1161                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1162         fcf_rec->fabric_name[2] =
1163                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1164         fcf_rec->fabric_name[3] =
1165                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1166         fcf_rec->fabric_name[4] =
1167                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1168         fcf_rec->fabric_name[5] =
1169                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1170         fcf_rec->fabric_name[6] =
1171                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1172         fcf_rec->fabric_name[7] =
1173                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1174         /* Mac address */
1175         fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1176         fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1177         fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1178         fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1179         fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1180         fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1181         /* FCF record index */
1182         fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1183         /* FCF record priority */
1184         fcf_rec->priority = new_fcf_record->fip_priority;
1185         /* Switch name */
1186         fcf_rec->switch_name[0] =
1187                 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1188         fcf_rec->switch_name[1] =
1189                 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1190         fcf_rec->switch_name[2] =
1191                 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1192         fcf_rec->switch_name[3] =
1193                 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1194         fcf_rec->switch_name[4] =
1195                 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1196         fcf_rec->switch_name[5] =
1197                 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1198         fcf_rec->switch_name[6] =
1199                 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1200         fcf_rec->switch_name[7] =
1201                 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1202 }
1203
1204 /**
1205  * lpfc_update_fcf_record - Update driver fcf record
1206  * @phba: pointer to lpfc hba data structure.
1207  * @fcf_rec: pointer to driver fcf record.
1208  * @new_fcf_record: pointer to hba fcf record.
1209  * @addr_mode: address mode to be set to the driver fcf record.
1210  * @vlan_id: vlan tag to be set to the driver fcf record.
1211  * @flag: flag bits to be set to the driver fcf record.
1212  *
1213  * This routine updates the driver FCF record from the new HBA FCF record
1214  * together with the address mode, vlan_id, and other informations. This
1215  * routine is called with the host lock held.
1216  **/
1217 static void
1218 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1219                        struct fcf_record *new_fcf_record, uint32_t addr_mode,
1220                        uint16_t vlan_id, uint32_t flag)
1221 {
1222         /* Copy the fields from the HBA's FCF record */
1223         lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1224         /* Update other fields of driver FCF record */
1225         fcf_rec->addr_mode = addr_mode;
1226         fcf_rec->vlan_id = vlan_id;
1227         fcf_rec->flag |= (flag | RECORD_VALID);
1228 }
1229
1230 /**
1231  * lpfc_register_fcf - Register the FCF with hba.
1232  * @phba: pointer to lpfc hba data structure.
1233  *
1234  * This routine issues a register fcfi mailbox command to register
1235  * the fcf with HBA.
1236  **/
1237 static void
1238 lpfc_register_fcf(struct lpfc_hba *phba)
1239 {
1240         LPFC_MBOXQ_t *fcf_mbxq;
1241         int rc;
1242
1243         spin_lock_irq(&phba->hbalock);
1244
1245         /* If the FCF is not availabe do nothing. */
1246         if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1247                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1248                 spin_unlock_irq(&phba->hbalock);
1249                 return;
1250         }
1251
1252         /* The FCF is already registered, start discovery */
1253         if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1254                 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1255                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1256                 spin_unlock_irq(&phba->hbalock);
1257                 if (phba->pport->port_state != LPFC_FLOGI)
1258                         lpfc_initial_flogi(phba->pport);
1259                 return;
1260         }
1261         spin_unlock_irq(&phba->hbalock);
1262
1263         fcf_mbxq = mempool_alloc(phba->mbox_mem_pool,
1264                 GFP_KERNEL);
1265         if (!fcf_mbxq) {
1266                 spin_lock_irq(&phba->hbalock);
1267                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1268                 spin_unlock_irq(&phba->hbalock);
1269                 return;
1270         }
1271
1272         lpfc_reg_fcfi(phba, fcf_mbxq);
1273         fcf_mbxq->vport = phba->pport;
1274         fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1275         rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1276         if (rc == MBX_NOT_FINISHED) {
1277                 spin_lock_irq(&phba->hbalock);
1278                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1279                 spin_unlock_irq(&phba->hbalock);
1280                 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1281         }
1282
1283         return;
1284 }
1285
1286 /**
1287  * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1288  * @phba: pointer to lpfc hba data structure.
1289  * @new_fcf_record: pointer to fcf record.
1290  * @boot_flag: Indicates if this record used by boot bios.
1291  * @addr_mode: The address mode to be used by this FCF
1292  * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1293  *
1294  * This routine compare the fcf record with connect list obtained from the
1295  * config region to decide if this FCF can be used for SAN discovery. It returns
1296  * 1 if this record can be used for SAN discovery else return zero. If this FCF
1297  * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1298  * is used by boot bios and addr_mode will indicate the addressing mode to be
1299  * used for this FCF when the function returns.
1300  * If the FCF record need to be used with a particular vlan id, the vlan is
1301  * set in the vlan_id on return of the function. If not VLAN tagging need to
1302  * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
1303  **/
1304 static int
1305 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1306                         struct fcf_record *new_fcf_record,
1307                         uint32_t *boot_flag, uint32_t *addr_mode,
1308                         uint16_t *vlan_id)
1309 {
1310         struct lpfc_fcf_conn_entry *conn_entry;
1311         int i, j, fcf_vlan_id = 0;
1312
1313         /* Find the lowest VLAN id in the FCF record */
1314         for (i = 0; i < 512; i++) {
1315                 if (new_fcf_record->vlan_bitmap[i]) {
1316                         fcf_vlan_id = i * 8;
1317                         j = 0;
1318                         while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1319                                 j++;
1320                                 fcf_vlan_id++;
1321                         }
1322                         break;
1323                 }
1324         }
1325
1326         /* If FCF not available return 0 */
1327         if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1328                 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record))
1329                 return 0;
1330
1331         if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1332                 *boot_flag = 0;
1333                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1334                                 new_fcf_record);
1335                 if (phba->valid_vlan)
1336                         *vlan_id = phba->vlan_id;
1337                 else
1338                         *vlan_id = LPFC_FCOE_NULL_VID;
1339                 return 1;
1340         }
1341
1342         /*
1343          * If there are no FCF connection table entry, driver connect to all
1344          * FCFs.
1345          */
1346         if (list_empty(&phba->fcf_conn_rec_list)) {
1347                 *boot_flag = 0;
1348                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1349                         new_fcf_record);
1350
1351                 /*
1352                  * When there are no FCF connect entries, use driver's default
1353                  * addressing mode - FPMA.
1354                  */
1355                 if (*addr_mode & LPFC_FCF_FPMA)
1356                         *addr_mode = LPFC_FCF_FPMA;
1357
1358                 /* If FCF record report a vlan id use that vlan id */
1359                 if (fcf_vlan_id)
1360                         *vlan_id = fcf_vlan_id;
1361                 else
1362                         *vlan_id = LPFC_FCOE_NULL_VID;
1363                 return 1;
1364         }
1365
1366         list_for_each_entry(conn_entry,
1367                             &phba->fcf_conn_rec_list, list) {
1368                 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1369                         continue;
1370
1371                 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1372                         !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1373                                              new_fcf_record))
1374                         continue;
1375                 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
1376                         !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
1377                                             new_fcf_record))
1378                         continue;
1379                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1380                         /*
1381                          * If the vlan bit map does not have the bit set for the
1382                          * vlan id to be used, then it is not a match.
1383                          */
1384                         if (!(new_fcf_record->vlan_bitmap
1385                                 [conn_entry->conn_rec.vlan_tag / 8] &
1386                                 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
1387                                 continue;
1388                 }
1389
1390                 /*
1391                  * If connection record does not support any addressing mode,
1392                  * skip the FCF record.
1393                  */
1394                 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
1395                         & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
1396                         continue;
1397
1398                 /*
1399                  * Check if the connection record specifies a required
1400                  * addressing mode.
1401                  */
1402                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1403                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
1404
1405                         /*
1406                          * If SPMA required but FCF not support this continue.
1407                          */
1408                         if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1409                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1410                                         new_fcf_record) & LPFC_FCF_SPMA))
1411                                 continue;
1412
1413                         /*
1414                          * If FPMA required but FCF not support this continue.
1415                          */
1416                         if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1417                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1418                                 new_fcf_record) & LPFC_FCF_FPMA))
1419                                 continue;
1420                 }
1421
1422                 /*
1423                  * This fcf record matches filtering criteria.
1424                  */
1425                 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
1426                         *boot_flag = 1;
1427                 else
1428                         *boot_flag = 0;
1429
1430                 /*
1431                  * If user did not specify any addressing mode, or if the
1432                  * prefered addressing mode specified by user is not supported
1433                  * by FCF, allow fabric to pick the addressing mode.
1434                  */
1435                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1436                                 new_fcf_record);
1437                 /*
1438                  * If the user specified a required address mode, assign that
1439                  * address mode
1440                  */
1441                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1442                         (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
1443                         *addr_mode = (conn_entry->conn_rec.flags &
1444                                 FCFCNCT_AM_SPMA) ?
1445                                 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
1446                 /*
1447                  * If the user specified a prefered address mode, use the
1448                  * addr mode only if FCF support the addr_mode.
1449                  */
1450                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1451                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1452                         (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1453                         (*addr_mode & LPFC_FCF_SPMA))
1454                                 *addr_mode = LPFC_FCF_SPMA;
1455                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1456                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1457                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1458                         (*addr_mode & LPFC_FCF_FPMA))
1459                                 *addr_mode = LPFC_FCF_FPMA;
1460
1461                 /* If matching connect list has a vlan id, use it */
1462                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
1463                         *vlan_id = conn_entry->conn_rec.vlan_tag;
1464                 /*
1465                  * If no vlan id is specified in connect list, use the vlan id
1466                  * in the FCF record
1467                  */
1468                 else if (fcf_vlan_id)
1469                         *vlan_id = fcf_vlan_id;
1470                 else
1471                         *vlan_id = LPFC_FCOE_NULL_VID;
1472
1473                 return 1;
1474         }
1475
1476         return 0;
1477 }
1478
1479 /**
1480  * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
1481  * @phba: pointer to lpfc hba data structure.
1482  * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
1483  *
1484  * This function check if there is any fcoe event pending while driver
1485  * scan FCF entries. If there is any pending event, it will restart the
1486  * FCF saning and return 1 else return 0.
1487  */
1488 int
1489 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
1490 {
1491         /*
1492          * If the Link is up and no FCoE events while in the
1493          * FCF discovery, no need to restart FCF discovery.
1494          */
1495         if ((phba->link_state  >= LPFC_LINK_UP) &&
1496                 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
1497                 return 0;
1498
1499         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1500                         "2768 Pending link or FCF event during current "
1501                         "handling of the previous event: link_state:x%x, "
1502                         "evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
1503                         phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
1504                         phba->fcoe_eventtag);
1505
1506         spin_lock_irq(&phba->hbalock);
1507         phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
1508         spin_unlock_irq(&phba->hbalock);
1509
1510         if (phba->link_state >= LPFC_LINK_UP) {
1511                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1512                                 "2780 Restart FCF table scan due to "
1513                                 "pending FCF event:evt_tag_at_scan:x%x, "
1514                                 "evt_tag_current:x%x\n",
1515                                 phba->fcoe_eventtag_at_fcf_scan,
1516                                 phba->fcoe_eventtag);
1517                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
1518         } else {
1519                 /*
1520                  * Do not continue FCF discovery and clear FCF_DISC_INPROGRESS
1521                  * flag
1522                  */
1523                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1524                                 "2833 Stop FCF discovery process due to link "
1525                                 "state change (x%x)\n", phba->link_state);
1526                 spin_lock_irq(&phba->hbalock);
1527                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1528                 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
1529                 spin_unlock_irq(&phba->hbalock);
1530         }
1531
1532         /* Unregister the currently registered FCF if required */
1533         if (unreg_fcf) {
1534                 spin_lock_irq(&phba->hbalock);
1535                 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
1536                 spin_unlock_irq(&phba->hbalock);
1537                 lpfc_sli4_unregister_fcf(phba);
1538         }
1539         return 1;
1540 }
1541
1542 /**
1543  * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
1544  * @phba: pointer to lpfc hba data structure.
1545  * @fcf_cnt: number of eligible fcf record seen so far.
1546  *
1547  * This function makes an running random selection decision on FCF record to
1548  * use through a sequence of @fcf_cnt eligible FCF records with equal
1549  * probability. To perform integer manunipulation of random numbers with
1550  * size unit32_t, the lower 16 bits of the 32-bit random number returned
1551  * from random32() are taken as the random random number generated.
1552  *
1553  * Returns true when outcome is for the newly read FCF record should be
1554  * chosen; otherwise, return false when outcome is for keeping the previously
1555  * chosen FCF record.
1556  **/
1557 static bool
1558 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
1559 {
1560         uint32_t rand_num;
1561
1562         /* Get 16-bit uniform random number */
1563         rand_num = (0xFFFF & random32());
1564
1565         /* Decision with probability 1/fcf_cnt */
1566         if ((fcf_cnt * rand_num) < 0xFFFF)
1567                 return true;
1568         else
1569                 return false;
1570 }
1571
1572 /**
1573  * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
1574  * @phba: pointer to lpfc hba data structure.
1575  * @mboxq: pointer to mailbox object.
1576  * @next_fcf_index: pointer to holder of next fcf index.
1577  *
1578  * This routine parses the non-embedded fcf mailbox command by performing the
1579  * necessarily error checking, non-embedded read FCF record mailbox command
1580  * SGE parsing, and endianness swapping.
1581  *
1582  * Returns the pointer to the new FCF record in the non-embedded mailbox
1583  * command DMA memory if successfully, other NULL.
1584  */
1585 static struct fcf_record *
1586 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
1587                              uint16_t *next_fcf_index)
1588 {
1589         void *virt_addr;
1590         dma_addr_t phys_addr;
1591         struct lpfc_mbx_sge sge;
1592         struct lpfc_mbx_read_fcf_tbl *read_fcf;
1593         uint32_t shdr_status, shdr_add_status;
1594         union lpfc_sli4_cfg_shdr *shdr;
1595         struct fcf_record *new_fcf_record;
1596
1597         /* Get the first SGE entry from the non-embedded DMA memory. This
1598          * routine only uses a single SGE.
1599          */
1600         lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
1601         phys_addr = getPaddr(sge.pa_hi, sge.pa_lo);
1602         if (unlikely(!mboxq->sge_array)) {
1603                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1604                                 "2524 Failed to get the non-embedded SGE "
1605                                 "virtual address\n");
1606                 return NULL;
1607         }
1608         virt_addr = mboxq->sge_array->addr[0];
1609
1610         shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
1611         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
1612         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
1613         if (shdr_status || shdr_add_status) {
1614                 if (shdr_status == STATUS_FCF_TABLE_EMPTY)
1615                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1616                                         "2726 READ_FCF_RECORD Indicates empty "
1617                                         "FCF table.\n");
1618                 else
1619                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1620                                         "2521 READ_FCF_RECORD mailbox failed "
1621                                         "with status x%x add_status x%x, "
1622                                         "mbx\n", shdr_status, shdr_add_status);
1623                 return NULL;
1624         }
1625
1626         /* Interpreting the returned information of the FCF record */
1627         read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
1628         lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
1629                               sizeof(struct lpfc_mbx_read_fcf_tbl));
1630         *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
1631         new_fcf_record = (struct fcf_record *)(virt_addr +
1632                           sizeof(struct lpfc_mbx_read_fcf_tbl));
1633         lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
1634                                 offsetof(struct fcf_record, vlan_bitmap));
1635         new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
1636         new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
1637
1638         return new_fcf_record;
1639 }
1640
1641 /**
1642  * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
1643  * @phba: pointer to lpfc hba data structure.
1644  * @fcf_record: pointer to the fcf record.
1645  * @vlan_id: the lowest vlan identifier associated to this fcf record.
1646  * @next_fcf_index: the index to the next fcf record in hba's fcf table.
1647  *
1648  * This routine logs the detailed FCF record if the LOG_FIP loggin is
1649  * enabled.
1650  **/
1651 static void
1652 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
1653                               struct fcf_record *fcf_record,
1654                               uint16_t vlan_id,
1655                               uint16_t next_fcf_index)
1656 {
1657         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1658                         "2764 READ_FCF_RECORD:\n"
1659                         "\tFCF_Index     : x%x\n"
1660                         "\tFCF_Avail     : x%x\n"
1661                         "\tFCF_Valid     : x%x\n"
1662                         "\tFIP_Priority  : x%x\n"
1663                         "\tMAC_Provider  : x%x\n"
1664                         "\tLowest VLANID : x%x\n"
1665                         "\tFCF_MAC Addr  : x%x:%x:%x:%x:%x:%x\n"
1666                         "\tFabric_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1667                         "\tSwitch_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1668                         "\tNext_FCF_Index: x%x\n",
1669                         bf_get(lpfc_fcf_record_fcf_index, fcf_record),
1670                         bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
1671                         bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
1672                         fcf_record->fip_priority,
1673                         bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
1674                         vlan_id,
1675                         bf_get(lpfc_fcf_record_mac_0, fcf_record),
1676                         bf_get(lpfc_fcf_record_mac_1, fcf_record),
1677                         bf_get(lpfc_fcf_record_mac_2, fcf_record),
1678                         bf_get(lpfc_fcf_record_mac_3, fcf_record),
1679                         bf_get(lpfc_fcf_record_mac_4, fcf_record),
1680                         bf_get(lpfc_fcf_record_mac_5, fcf_record),
1681                         bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
1682                         bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
1683                         bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
1684                         bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
1685                         bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
1686                         bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
1687                         bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
1688                         bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
1689                         bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
1690                         bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
1691                         bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
1692                         bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
1693                         bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
1694                         bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
1695                         bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
1696                         bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
1697                         next_fcf_index);
1698 }
1699
1700 /**
1701  lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
1702  * @phba: pointer to lpfc hba data structure.
1703  * @fcf_rec: pointer to an existing FCF record.
1704  * @new_fcf_record: pointer to a new FCF record.
1705  * @new_vlan_id: vlan id from the new FCF record.
1706  *
1707  * This function performs matching test of a new FCF record against an existing
1708  * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
1709  * will not be used as part of the FCF record matching criteria.
1710  *
1711  * Returns true if all the fields matching, otherwise returns false.
1712  */
1713 static bool
1714 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
1715                            struct lpfc_fcf_rec *fcf_rec,
1716                            struct fcf_record *new_fcf_record,
1717                            uint16_t new_vlan_id)
1718 {
1719         if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
1720                 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
1721                         return false;
1722         if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
1723                 return false;
1724         if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
1725                 return false;
1726         if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
1727                 return false;
1728         return true;
1729 }
1730
1731 /**
1732  * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
1733  * @phba: pointer to lpfc hba data structure.
1734  * @mboxq: pointer to mailbox object.
1735  *
1736  * This function iterates through all the fcf records available in
1737  * HBA and chooses the optimal FCF record for discovery. After finding
1738  * the FCF for discovery it registers the FCF record and kicks start
1739  * discovery.
1740  * If FCF_IN_USE flag is set in currently used FCF, the routine tries to
1741  * use an FCF record which matches fabric name and mac address of the
1742  * currently used FCF record.
1743  * If the driver supports only one FCF, it will try to use the FCF record
1744  * used by BOOT_BIOS.
1745  */
1746 void
1747 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1748 {
1749         struct fcf_record *new_fcf_record;
1750         uint32_t boot_flag, addr_mode;
1751         uint16_t fcf_index, next_fcf_index;
1752         struct lpfc_fcf_rec *fcf_rec = NULL;
1753         uint16_t vlan_id;
1754         uint32_t seed;
1755         bool select_new_fcf;
1756         int rc;
1757
1758         /* If there is pending FCoE event restart FCF table scan */
1759         if (lpfc_check_pending_fcoe_event(phba, 0)) {
1760                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1761                 return;
1762         }
1763
1764         /* Parse the FCF record from the non-embedded mailbox command */
1765         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
1766                                                       &next_fcf_index);
1767         if (!new_fcf_record) {
1768                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
1769                                 "2765 Mailbox command READ_FCF_RECORD "
1770                                 "failed to retrieve a FCF record.\n");
1771                 /* Let next new FCF event trigger fast failover */
1772                 spin_lock_irq(&phba->hbalock);
1773                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1774                 spin_unlock_irq(&phba->hbalock);
1775                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1776                 return;
1777         }
1778
1779         /* Check the FCF record against the connection list */
1780         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
1781                                       &addr_mode, &vlan_id);
1782
1783         /* Log the FCF record information if turned on */
1784         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
1785                                       next_fcf_index);
1786
1787         /*
1788          * If the fcf record does not match with connect list entries
1789          * read the next entry; otherwise, this is an eligible FCF
1790          * record for round robin FCF failover.
1791          */
1792         if (!rc) {
1793                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
1794                                 "2781 FCF record (x%x) failed FCF "
1795                                 "connection list check, fcf_avail:x%x, "
1796                                 "fcf_valid:x%x\n",
1797                                 bf_get(lpfc_fcf_record_fcf_index,
1798                                        new_fcf_record),
1799                                 bf_get(lpfc_fcf_record_fcf_avail,
1800                                        new_fcf_record),
1801                                 bf_get(lpfc_fcf_record_fcf_valid,
1802                                        new_fcf_record));
1803                 if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
1804                     lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
1805                     new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
1806                         /*
1807                          * In case the current in-use FCF record becomes
1808                          * invalid/unavailable during FCF discovery that
1809                          * was not triggered by fast FCF failover process,
1810                          * treat it as fast FCF failover.
1811                          */
1812                         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
1813                             !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
1814                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
1815                                                 "2835 Invalid in-use FCF "
1816                                                 "record (x%x) reported, "
1817                                                 "entering fast FCF failover "
1818                                                 "mode scanning.\n",
1819                                                 phba->fcf.current_rec.fcf_indx);
1820                                 spin_lock_irq(&phba->hbalock);
1821                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
1822                                 spin_unlock_irq(&phba->hbalock);
1823                                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1824                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
1825                                                 LPFC_FCOE_FCF_GET_FIRST);
1826                                 return;
1827                         }
1828                 }
1829                 goto read_next_fcf;
1830         } else {
1831                 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1832                 rc = lpfc_sli4_fcf_rr_index_set(phba, fcf_index);
1833                 if (rc)
1834                         goto read_next_fcf;
1835         }
1836
1837         /*
1838          * If this is not the first FCF discovery of the HBA, use last
1839          * FCF record for the discovery. The condition that a rescan
1840          * matches the in-use FCF record: fabric name, switch name, mac
1841          * address, and vlan_id.
1842          */
1843         spin_lock_irq(&phba->hbalock);
1844         if (phba->fcf.fcf_flag & FCF_IN_USE) {
1845                 if (lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
1846                     new_fcf_record, vlan_id)) {
1847                         phba->fcf.fcf_flag |= FCF_AVAILABLE;
1848                         if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
1849                                 /* Stop FCF redisc wait timer if pending */
1850                                 __lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
1851                         else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
1852                                 /* If in fast failover, mark it's completed */
1853                                 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
1854                         spin_unlock_irq(&phba->hbalock);
1855                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1856                                         "2836 The new FCF record (x%x) "
1857                                         "matches the in-use FCF record "
1858                                         "(x%x)\n",
1859                                         phba->fcf.current_rec.fcf_indx,
1860                                         bf_get(lpfc_fcf_record_fcf_index,
1861                                                new_fcf_record));
1862                         goto out;
1863                 }
1864                 /*
1865                  * Read next FCF record from HBA searching for the matching
1866                  * with in-use record only if not during the fast failover
1867                  * period. In case of fast failover period, it shall try to
1868                  * determine whether the FCF record just read should be the
1869                  * next candidate.
1870                  */
1871                 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
1872                         spin_unlock_irq(&phba->hbalock);
1873                         goto read_next_fcf;
1874                 }
1875         }
1876         /*
1877          * Update on failover FCF record only if it's in FCF fast-failover
1878          * period; otherwise, update on current FCF record.
1879          */
1880         if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
1881                 fcf_rec = &phba->fcf.failover_rec;
1882         else
1883                 fcf_rec = &phba->fcf.current_rec;
1884
1885         if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
1886                 /*
1887                  * If the driver FCF record does not have boot flag
1888                  * set and new hba fcf record has boot flag set, use
1889                  * the new hba fcf record.
1890                  */
1891                 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
1892                         /* Choose this FCF record */
1893                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1894                                         "2837 Update current FCF record "
1895                                         "(x%x) with new FCF record (x%x)\n",
1896                                         fcf_rec->fcf_indx,
1897                                         bf_get(lpfc_fcf_record_fcf_index,
1898                                         new_fcf_record));
1899                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
1900                                         addr_mode, vlan_id, BOOT_ENABLE);
1901                         spin_unlock_irq(&phba->hbalock);
1902                         goto read_next_fcf;
1903                 }
1904                 /*
1905                  * If the driver FCF record has boot flag set and the
1906                  * new hba FCF record does not have boot flag, read
1907                  * the next FCF record.
1908                  */
1909                 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
1910                         spin_unlock_irq(&phba->hbalock);
1911                         goto read_next_fcf;
1912                 }
1913                 /*
1914                  * If the new hba FCF record has lower priority value
1915                  * than the driver FCF record, use the new record.
1916                  */
1917                 if (new_fcf_record->fip_priority < fcf_rec->priority) {
1918                         /* Choose the new FCF record with lower priority */
1919                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1920                                         "2838 Update current FCF record "
1921                                         "(x%x) with new FCF record (x%x)\n",
1922                                         fcf_rec->fcf_indx,
1923                                         bf_get(lpfc_fcf_record_fcf_index,
1924                                                new_fcf_record));
1925                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
1926                                         addr_mode, vlan_id, 0);
1927                         /* Reset running random FCF selection count */
1928                         phba->fcf.eligible_fcf_cnt = 1;
1929                 } else if (new_fcf_record->fip_priority == fcf_rec->priority) {
1930                         /* Update running random FCF selection count */
1931                         phba->fcf.eligible_fcf_cnt++;
1932                         select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
1933                                                 phba->fcf.eligible_fcf_cnt);
1934                         if (select_new_fcf) {
1935                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1936                                         "2839 Update current FCF record "
1937                                         "(x%x) with new FCF record (x%x)\n",
1938                                         fcf_rec->fcf_indx,
1939                                         bf_get(lpfc_fcf_record_fcf_index,
1940                                                new_fcf_record));
1941                                 /* Choose the new FCF by random selection */
1942                                 __lpfc_update_fcf_record(phba, fcf_rec,
1943                                                          new_fcf_record,
1944                                                          addr_mode, vlan_id, 0);
1945                         }
1946                 }
1947                 spin_unlock_irq(&phba->hbalock);
1948                 goto read_next_fcf;
1949         }
1950         /*
1951          * This is the first suitable FCF record, choose this record for
1952          * initial best-fit FCF.
1953          */
1954         if (fcf_rec) {
1955                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1956                                 "2840 Update current FCF record "
1957                                 "with initial FCF record (x%x)\n",
1958                                 bf_get(lpfc_fcf_record_fcf_index,
1959                                        new_fcf_record));
1960                 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
1961                                          addr_mode, vlan_id, (boot_flag ?
1962                                          BOOT_ENABLE : 0));
1963                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
1964                 /* Setup initial running random FCF selection count */
1965                 phba->fcf.eligible_fcf_cnt = 1;
1966                 /* Seeding the random number generator for random selection */
1967                 seed = (uint32_t)(0xFFFFFFFF & jiffies);
1968                 srandom32(seed);
1969         }
1970         spin_unlock_irq(&phba->hbalock);
1971         goto read_next_fcf;
1972
1973 read_next_fcf:
1974         lpfc_sli4_mbox_cmd_free(phba, mboxq);
1975         if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
1976                 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
1977                         /*
1978                          * Case of FCF fast failover scan
1979                          */
1980
1981                         /*
1982                          * It has not found any suitable FCF record, cancel
1983                          * FCF scan inprogress, and do nothing
1984                          */
1985                         if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
1986                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
1987                                                "2782 No suitable FCF record "
1988                                                "found during this round of "
1989                                                "post FCF rediscovery scan: "
1990                                                "fcf_evt_tag:x%x, fcf_index: "
1991                                                "x%x\n",
1992                                                phba->fcoe_eventtag_at_fcf_scan,
1993                                                bf_get(lpfc_fcf_record_fcf_index,
1994                                                       new_fcf_record));
1995                                 /*
1996                                  * Let next new FCF event trigger fast
1997                                  * failover
1998                                  */
1999                                 spin_lock_irq(&phba->hbalock);
2000                                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
2001                                 spin_unlock_irq(&phba->hbalock);
2002                                 return;
2003                         }
2004                         /*
2005                          * It has found a suitable FCF record that is not
2006                          * the same as in-use FCF record, unregister the
2007                          * in-use FCF record, replace the in-use FCF record
2008                          * with the new FCF record, mark FCF fast failover
2009                          * completed, and then start register the new FCF
2010                          * record.
2011                          */
2012
2013                         /* Unregister the current in-use FCF record */
2014                         lpfc_unregister_fcf(phba);
2015
2016                         /* Replace in-use record with the new record */
2017                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2018                                         "2842 Replace the current in-use "
2019                                         "FCF record (x%x) with failover FCF "
2020                                         "record (x%x)\n",
2021                                         phba->fcf.current_rec.fcf_indx,
2022                                         phba->fcf.failover_rec.fcf_indx);
2023                         memcpy(&phba->fcf.current_rec,
2024                                &phba->fcf.failover_rec,
2025                                sizeof(struct lpfc_fcf_rec));
2026                         /*
2027                          * Mark the fast FCF failover rediscovery completed
2028                          * and the start of the first round of the roundrobin
2029                          * FCF failover.
2030                          */
2031                         spin_lock_irq(&phba->hbalock);
2032                         phba->fcf.fcf_flag &=
2033                                         ~(FCF_REDISC_FOV | FCF_REDISC_RRU);
2034                         spin_unlock_irq(&phba->hbalock);
2035                         /*
2036                          * Set up the initial registered FCF index for FLOGI
2037                          * round robin FCF failover.
2038                          */
2039                         phba->fcf.fcf_rr_init_indx =
2040                                         phba->fcf.failover_rec.fcf_indx;
2041                         /* Register to the new FCF record */
2042                         lpfc_register_fcf(phba);
2043                 } else {
2044                         /*
2045                          * In case of transaction period to fast FCF failover,
2046                          * do nothing when search to the end of the FCF table.
2047                          */
2048                         if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
2049                             (phba->fcf.fcf_flag & FCF_REDISC_PEND))
2050                                 return;
2051
2052                         if (phba->fcf.fcf_flag & FCF_IN_USE) {
2053                                 /*
2054                                  * In case the current in-use FCF record no
2055                                  * longer existed during FCF discovery that
2056                                  * was not triggered by fast FCF failover
2057                                  * process, treat it as fast FCF failover.
2058                                  */
2059                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2060                                                 "2841 In-use FCF record (x%x) "
2061                                                 "not reported, entering fast "
2062                                                 "FCF failover mode scanning.\n",
2063                                                 phba->fcf.current_rec.fcf_indx);
2064                                 spin_lock_irq(&phba->hbalock);
2065                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2066                                 spin_unlock_irq(&phba->hbalock);
2067                                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2068                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2069                                                 LPFC_FCOE_FCF_GET_FIRST);
2070                                 return;
2071                         }
2072
2073                         /*
2074                          * Otherwise, initial scan or post linkdown rescan,
2075                          * register with the best FCF record found so far
2076                          * through the FCF scanning process.
2077                          */
2078
2079                         /*
2080                          * Mark the initial FCF discovery completed and
2081                          * the start of the first round of the roundrobin
2082                          * FCF failover.
2083                          */
2084                         spin_lock_irq(&phba->hbalock);
2085                         phba->fcf.fcf_flag &=
2086                                         ~(FCF_INIT_DISC | FCF_REDISC_RRU);
2087                         spin_unlock_irq(&phba->hbalock);
2088                         /*
2089                          * Set up the initial registered FCF index for FLOGI
2090                          * round robin FCF failover
2091                          */
2092                         phba->fcf.fcf_rr_init_indx =
2093                                         phba->fcf.current_rec.fcf_indx;
2094                         /* Register to the new FCF record */
2095                         lpfc_register_fcf(phba);
2096                 }
2097         } else
2098                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
2099         return;
2100
2101 out:
2102         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2103         lpfc_register_fcf(phba);
2104
2105         return;
2106 }
2107
2108 /**
2109  * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf round robin read_fcf mbox cmpl hdler
2110  * @phba: pointer to lpfc hba data structure.
2111  * @mboxq: pointer to mailbox object.
2112  *
2113  * This is the callback function for FLOGI failure round robin FCF failover
2114  * read FCF record mailbox command from the eligible FCF record bmask for
2115  * performing the failover. If the FCF read back is not valid/available, it
2116  * fails through to retrying FLOGI to the currently registered FCF again.
2117  * Otherwise, if the FCF read back is valid and available, it will set the
2118  * newly read FCF record to the failover FCF record, unregister currently
2119  * registered FCF record, copy the failover FCF record to the current
2120  * FCF record, and then register the current FCF record before proceeding
2121  * to trying FLOGI on the new failover FCF.
2122  */
2123 void
2124 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2125 {
2126         struct fcf_record *new_fcf_record;
2127         uint32_t boot_flag, addr_mode;
2128         uint16_t next_fcf_index;
2129         uint16_t current_fcf_index;
2130         uint16_t vlan_id;
2131
2132         /* If link state is not up, stop the round robin failover process */
2133         if (phba->link_state < LPFC_LINK_UP) {
2134                 spin_lock_irq(&phba->hbalock);
2135                 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
2136                 spin_unlock_irq(&phba->hbalock);
2137                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2138                 return;
2139         }
2140
2141         /* Parse the FCF record from the non-embedded mailbox command */
2142         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2143                                                       &next_fcf_index);
2144         if (!new_fcf_record) {
2145                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2146                                 "2766 Mailbox command READ_FCF_RECORD "
2147                                 "failed to retrieve a FCF record.\n");
2148                 goto out;
2149         }
2150
2151         /* Get the needed parameters from FCF record */
2152         lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2153                                  &addr_mode, &vlan_id);
2154
2155         /* Log the FCF record information if turned on */
2156         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2157                                       next_fcf_index);
2158
2159         /* Upload new FCF record to the failover FCF record */
2160         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2161                         "2834 Update the current FCF record (x%x) "
2162                         "with the next FCF record (x%x)\n",
2163                         phba->fcf.failover_rec.fcf_indx,
2164                         bf_get(lpfc_fcf_record_fcf_index, new_fcf_record));
2165         spin_lock_irq(&phba->hbalock);
2166         __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
2167                                  new_fcf_record, addr_mode, vlan_id,
2168                                  (boot_flag ? BOOT_ENABLE : 0));
2169         spin_unlock_irq(&phba->hbalock);
2170
2171         current_fcf_index = phba->fcf.current_rec.fcf_indx;
2172
2173         /* Unregister the current in-use FCF record */
2174         lpfc_unregister_fcf(phba);
2175
2176         /* Replace in-use record with the new record */
2177         memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
2178                sizeof(struct lpfc_fcf_rec));
2179
2180         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2181                         "2783 FLOGI round robin FCF failover from FCF "
2182                         "(x%x) to FCF (x%x).\n",
2183                         current_fcf_index,
2184                         bf_get(lpfc_fcf_record_fcf_index, new_fcf_record));
2185
2186 out:
2187         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2188         lpfc_register_fcf(phba);
2189 }
2190
2191 /**
2192  * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
2193  * @phba: pointer to lpfc hba data structure.
2194  * @mboxq: pointer to mailbox object.
2195  *
2196  * This is the callback function of read FCF record mailbox command for
2197  * updating the eligible FCF bmask for FLOGI failure round robin FCF
2198  * failover when a new FCF event happened. If the FCF read back is
2199  * valid/available and it passes the connection list check, it updates
2200  * the bmask for the eligible FCF record for round robin failover.
2201  */
2202 void
2203 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2204 {
2205         struct fcf_record *new_fcf_record;
2206         uint32_t boot_flag, addr_mode;
2207         uint16_t fcf_index, next_fcf_index;
2208         uint16_t vlan_id;
2209         int rc;
2210
2211         /* If link state is not up, no need to proceed */
2212         if (phba->link_state < LPFC_LINK_UP)
2213                 goto out;
2214
2215         /* If FCF discovery period is over, no need to proceed */
2216         if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
2217                 goto out;
2218
2219         /* Parse the FCF record from the non-embedded mailbox command */
2220         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2221                                                       &next_fcf_index);
2222         if (!new_fcf_record) {
2223                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2224                                 "2767 Mailbox command READ_FCF_RECORD "
2225                                 "failed to retrieve a FCF record.\n");
2226                 goto out;
2227         }
2228
2229         /* Check the connection list for eligibility */
2230         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2231                                       &addr_mode, &vlan_id);
2232
2233         /* Log the FCF record information if turned on */
2234         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2235                                       next_fcf_index);
2236
2237         if (!rc)
2238                 goto out;
2239
2240         /* Update the eligible FCF record index bmask */
2241         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2242         rc = lpfc_sli4_fcf_rr_index_set(phba, fcf_index);
2243
2244 out:
2245         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2246 }
2247
2248 /**
2249  * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
2250  * @phba: pointer to lpfc hba data structure.
2251  * @mboxq: pointer to mailbox data structure.
2252  *
2253  * This function handles completion of init vpi mailbox command.
2254  */
2255 void
2256 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2257 {
2258         struct lpfc_vport *vport = mboxq->vport;
2259         struct lpfc_nodelist *ndlp;
2260         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2261
2262         if (mboxq->u.mb.mbxStatus) {
2263                 lpfc_printf_vlog(vport, KERN_ERR,
2264                                 LOG_MBOX,
2265                                 "2609 Init VPI mailbox failed 0x%x\n",
2266                                 mboxq->u.mb.mbxStatus);
2267                 mempool_free(mboxq, phba->mbox_mem_pool);
2268                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2269                 return;
2270         }
2271         spin_lock_irq(shost->host_lock);
2272         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
2273         spin_unlock_irq(shost->host_lock);
2274
2275         /* If this port is physical port or FDISC is done, do reg_vpi */
2276         if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
2277                         ndlp = lpfc_findnode_did(vport, Fabric_DID);
2278                         if (!ndlp)
2279                                 lpfc_printf_vlog(vport, KERN_ERR,
2280                                         LOG_DISCOVERY,
2281                                         "2731 Cannot find fabric "
2282                                         "controller node\n");
2283                         else
2284                                 lpfc_register_new_vport(phba, vport, ndlp);
2285                         mempool_free(mboxq, phba->mbox_mem_pool);
2286                         return;
2287         }
2288
2289         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2290                 lpfc_initial_fdisc(vport);
2291         else {
2292                 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
2293                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2294                                  "2606 No NPIV Fabric support\n");
2295         }
2296         mempool_free(mboxq, phba->mbox_mem_pool);
2297         return;
2298 }
2299
2300 /**
2301  * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
2302  * @vport: pointer to lpfc_vport data structure.
2303  *
2304  * This function issue a init_vpi mailbox command to initialize
2305  * VPI for the vport.
2306  */
2307 void
2308 lpfc_issue_init_vpi(struct lpfc_vport *vport)
2309 {
2310         LPFC_MBOXQ_t *mboxq;
2311         int rc;
2312
2313         mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
2314         if (!mboxq) {
2315                 lpfc_printf_vlog(vport, KERN_ERR,
2316                         LOG_MBOX, "2607 Failed to allocate "
2317                         "init_vpi mailbox\n");
2318                 return;
2319         }
2320         lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
2321         mboxq->vport = vport;
2322         mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
2323         rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
2324         if (rc == MBX_NOT_FINISHED) {
2325                 lpfc_printf_vlog(vport, KERN_ERR,
2326                         LOG_MBOX, "2608 Failed to issue init_vpi mailbox\n");
2327                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
2328         }
2329 }
2330
2331 /**
2332  * lpfc_start_fdiscs - send fdiscs for each vports on this port.
2333  * @phba: pointer to lpfc hba data structure.
2334  *
2335  * This function loops through the list of vports on the @phba and issues an
2336  * FDISC if possible.
2337  */
2338 void
2339 lpfc_start_fdiscs(struct lpfc_hba *phba)
2340 {
2341         struct lpfc_vport **vports;
2342         int i;
2343
2344         vports = lpfc_create_vport_work_array(phba);
2345         if (vports != NULL) {
2346                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2347                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
2348                                 continue;
2349                         /* There are no vpi for this vport */
2350                         if (vports[i]->vpi > phba->max_vpi) {
2351                                 lpfc_vport_set_state(vports[i],
2352                                                      FC_VPORT_FAILED);
2353                                 continue;
2354                         }
2355                         if (phba->fc_topology == TOPOLOGY_LOOP) {
2356                                 lpfc_vport_set_state(vports[i],
2357                                                      FC_VPORT_LINKDOWN);
2358                                 continue;
2359                         }
2360                         if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
2361                                 lpfc_issue_init_vpi(vports[i]);
2362                                 continue;
2363                         }
2364                         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2365                                 lpfc_initial_fdisc(vports[i]);
2366                         else {
2367                                 lpfc_vport_set_state(vports[i],
2368                                                      FC_VPORT_NO_FABRIC_SUPP);
2369                                 lpfc_printf_vlog(vports[i], KERN_ERR,
2370                                                  LOG_ELS,
2371                                                  "0259 No NPIV "
2372                                                  "Fabric support\n");
2373                         }
2374                 }
2375         }
2376         lpfc_destroy_vport_work_array(phba, vports);
2377 }
2378
2379 void
2380 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2381 {
2382         struct lpfc_dmabuf *dmabuf = mboxq->context1;
2383         struct lpfc_vport *vport = mboxq->vport;
2384         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2385
2386         if (mboxq->u.mb.mbxStatus) {
2387                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2388                          "2018 REG_VFI mbxStatus error x%x "
2389                          "HBA state x%x\n",
2390                          mboxq->u.mb.mbxStatus, vport->port_state);
2391                 if (phba->fc_topology == TOPOLOGY_LOOP) {
2392                         /* FLOGI failed, use loop map to make discovery list */
2393                         lpfc_disc_list_loopmap(vport);
2394                         /* Start discovery */
2395                         lpfc_disc_start(vport);
2396                         goto fail_free_mem;
2397                 }
2398                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2399                 goto fail_free_mem;
2400         }
2401         /* The VPI is implicitly registered when the VFI is registered */
2402         spin_lock_irq(shost->host_lock);
2403         vport->vpi_state |= LPFC_VPI_REGISTERED;
2404         vport->fc_flag |= FC_VFI_REGISTERED;
2405         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
2406         spin_unlock_irq(shost->host_lock);
2407
2408         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
2409                 lpfc_start_fdiscs(phba);
2410                 lpfc_do_scr_ns_plogi(phba, vport);
2411         }
2412
2413 fail_free_mem:
2414         mempool_free(mboxq, phba->mbox_mem_pool);
2415         lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
2416         kfree(dmabuf);
2417         return;
2418 }
2419
2420 static void
2421 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2422 {
2423         MAILBOX_t *mb = &pmb->u.mb;
2424         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
2425         struct lpfc_vport  *vport = pmb->vport;
2426
2427
2428         /* Check for error */
2429         if (mb->mbxStatus) {
2430                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
2431                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2432                                  "0319 READ_SPARAM mbxStatus error x%x "
2433                                  "hba state x%x>\n",
2434                                  mb->mbxStatus, vport->port_state);
2435                 lpfc_linkdown(phba);
2436                 goto out;
2437         }
2438
2439         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
2440                sizeof (struct serv_parm));
2441         if (phba->cfg_soft_wwnn)
2442                 u64_to_wwn(phba->cfg_soft_wwnn,
2443                            vport->fc_sparam.nodeName.u.wwn);
2444         if (phba->cfg_soft_wwpn)
2445                 u64_to_wwn(phba->cfg_soft_wwpn,
2446                            vport->fc_sparam.portName.u.wwn);
2447         memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
2448                sizeof(vport->fc_nodename));
2449         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
2450                sizeof(vport->fc_portname));
2451         if (vport->port_type == LPFC_PHYSICAL_PORT) {
2452                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
2453                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
2454         }
2455
2456         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2457         kfree(mp);
2458         mempool_free(pmb, phba->mbox_mem_pool);
2459         return;
2460
2461 out:
2462         pmb->context1 = NULL;
2463         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2464         kfree(mp);
2465         lpfc_issue_clear_la(phba, vport);
2466         mempool_free(pmb, phba->mbox_mem_pool);
2467         return;
2468 }
2469
2470 static void
2471 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
2472 {
2473         struct lpfc_vport *vport = phba->pport;
2474         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
2475         int i;
2476         struct lpfc_dmabuf *mp;
2477         int rc;
2478         struct fcf_record *fcf_record;
2479
2480         spin_lock_irq(&phba->hbalock);
2481         switch (la->UlnkSpeed) {
2482         case LA_1GHZ_LINK:
2483                 phba->fc_linkspeed = LA_1GHZ_LINK;
2484                 break;
2485         case LA_2GHZ_LINK:
2486                 phba->fc_linkspeed = LA_2GHZ_LINK;
2487                 break;
2488         case LA_4GHZ_LINK:
2489                 phba->fc_linkspeed = LA_4GHZ_LINK;
2490                 break;
2491         case LA_8GHZ_LINK:
2492                 phba->fc_linkspeed = LA_8GHZ_LINK;
2493                 break;
2494         case LA_10GHZ_LINK:
2495                 phba->fc_linkspeed = LA_10GHZ_LINK;
2496                 break;
2497         default:
2498                 phba->fc_linkspeed = LA_UNKNW_LINK;
2499                 break;
2500         }
2501
2502         phba->fc_topology = la->topology;
2503         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
2504
2505         if (phba->fc_topology == TOPOLOGY_LOOP) {
2506                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
2507
2508                 /* if npiv is enabled and this adapter supports npiv log
2509                  * a message that npiv is not supported in this topology
2510                  */
2511                 if (phba->cfg_enable_npiv && phba->max_vpi)
2512                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2513                                 "1309 Link Up Event npiv not supported in loop "
2514                                 "topology\n");
2515                                 /* Get Loop Map information */
2516                 if (la->il)
2517                         vport->fc_flag |= FC_LBIT;
2518
2519                 vport->fc_myDID = la->granted_AL_PA;
2520                 i = la->un.lilpBde64.tus.f.bdeSize;
2521
2522                 if (i == 0) {
2523                         phba->alpa_map[0] = 0;
2524                 } else {
2525                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
2526                                 int numalpa, j, k;
2527                                 union {
2528                                         uint8_t pamap[16];
2529                                         struct {
2530                                                 uint32_t wd1;
2531                                                 uint32_t wd2;
2532                                                 uint32_t wd3;
2533                                                 uint32_t wd4;
2534                                         } pa;
2535                                 } un;
2536                                 numalpa = phba->alpa_map[0];
2537                                 j = 0;
2538                                 while (j < numalpa) {
2539                                         memset(un.pamap, 0, 16);
2540                                         for (k = 1; j < numalpa; k++) {
2541                                                 un.pamap[k - 1] =
2542                                                         phba->alpa_map[j + 1];
2543                                                 j++;
2544                                                 if (k == 16)
2545                                                         break;
2546                                         }
2547                                         /* Link Up Event ALPA map */
2548                                         lpfc_printf_log(phba,
2549                                                         KERN_WARNING,
2550                                                         LOG_LINK_EVENT,
2551                                                         "1304 Link Up Event "
2552                                                         "ALPA map Data: x%x "
2553                                                         "x%x x%x x%x\n",
2554                                                         un.pa.wd1, un.pa.wd2,
2555                                                         un.pa.wd3, un.pa.wd4);
2556                                 }
2557                         }
2558                 }
2559         } else {
2560                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
2561                         if (phba->max_vpi && phba->cfg_enable_npiv &&
2562                            (phba->sli_rev == 3))
2563                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
2564                 }
2565                 vport->fc_myDID = phba->fc_pref_DID;
2566                 vport->fc_flag |= FC_LBIT;
2567         }
2568         spin_unlock_irq(&phba->hbalock);
2569
2570         lpfc_linkup(phba);
2571         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2572         if (!sparam_mbox)
2573                 goto out;
2574
2575         rc = lpfc_read_sparam(phba, sparam_mbox, 0);
2576         if (rc) {
2577                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
2578                 goto out;
2579         }
2580         sparam_mbox->vport = vport;
2581         sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
2582         rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
2583         if (rc == MBX_NOT_FINISHED) {
2584                 mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
2585                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2586                 kfree(mp);
2587                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
2588                 goto out;
2589         }
2590
2591         if (!(phba->hba_flag & HBA_FCOE_SUPPORT)) {
2592                 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2593                 if (!cfglink_mbox)
2594                         goto out;
2595                 vport->port_state = LPFC_LOCAL_CFG_LINK;
2596                 lpfc_config_link(phba, cfglink_mbox);
2597                 cfglink_mbox->vport = vport;
2598                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
2599                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
2600                 if (rc == MBX_NOT_FINISHED) {
2601                         mempool_free(cfglink_mbox, phba->mbox_mem_pool);
2602                         goto out;
2603                 }
2604         } else {
2605                 vport->port_state = LPFC_VPORT_UNKNOWN;
2606                 /*
2607                  * Add the driver's default FCF record at FCF index 0 now. This
2608                  * is phase 1 implementation that support FCF index 0 and driver
2609                  * defaults.
2610                  */
2611                 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
2612                         fcf_record = kzalloc(sizeof(struct fcf_record),
2613                                         GFP_KERNEL);
2614                         if (unlikely(!fcf_record)) {
2615                                 lpfc_printf_log(phba, KERN_ERR,
2616                                         LOG_MBOX | LOG_SLI,
2617                                         "2554 Could not allocate memmory for "
2618                                         "fcf record\n");
2619                                 rc = -ENODEV;
2620                                 goto out;
2621                         }
2622
2623                         lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
2624                                                 LPFC_FCOE_FCF_DEF_INDEX);
2625                         rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
2626                         if (unlikely(rc)) {
2627                                 lpfc_printf_log(phba, KERN_ERR,
2628                                         LOG_MBOX | LOG_SLI,
2629                                         "2013 Could not manually add FCF "
2630                                         "record 0, status %d\n", rc);
2631                                 rc = -ENODEV;
2632                                 kfree(fcf_record);
2633                                 goto out;
2634                         }
2635                         kfree(fcf_record);
2636                 }
2637                 /*
2638                  * The driver is expected to do FIP/FCF. Call the port
2639                  * and get the FCF Table.
2640                  */
2641                 spin_lock_irq(&phba->hbalock);
2642                 if (phba->hba_flag & FCF_DISC_INPROGRESS) {
2643                         spin_unlock_irq(&phba->hbalock);
2644                         return;
2645                 }
2646                 /* This is the initial FCF discovery scan */
2647                 phba->fcf.fcf_flag |= FCF_INIT_DISC;
2648                 spin_unlock_irq(&phba->hbalock);
2649                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
2650                                 "2778 Start FCF table scan at linkup\n");
2651                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2652                                                      LPFC_FCOE_FCF_GET_FIRST);
2653                 if (rc) {
2654                         spin_lock_irq(&phba->hbalock);
2655                         phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
2656                         spin_unlock_irq(&phba->hbalock);
2657                         goto out;
2658                 }
2659                 /* Reset FCF roundrobin bmask for new discovery */
2660                 memset(phba->fcf.fcf_rr_bmask, 0,
2661                        sizeof(*phba->fcf.fcf_rr_bmask));
2662         }
2663
2664         return;
2665 out:
2666         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2667         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2668                          "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
2669                          vport->port_state, sparam_mbox, cfglink_mbox);
2670         lpfc_issue_clear_la(phba, vport);
2671         return;
2672 }
2673
2674 static void
2675 lpfc_enable_la(struct lpfc_hba *phba)
2676 {
2677         uint32_t control;
2678         struct lpfc_sli *psli = &phba->sli;
2679         spin_lock_irq(&phba->hbalock);
2680         psli->sli_flag |= LPFC_PROCESS_LA;
2681         if (phba->sli_rev <= LPFC_SLI_REV3) {
2682                 control = readl(phba->HCregaddr);
2683                 control |= HC_LAINT_ENA;
2684                 writel(control, phba->HCregaddr);
2685                 readl(phba->HCregaddr); /* flush */
2686         }
2687         spin_unlock_irq(&phba->hbalock);
2688 }
2689
2690 static void
2691 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
2692 {
2693         lpfc_linkdown(phba);
2694         lpfc_enable_la(phba);
2695         lpfc_unregister_unused_fcf(phba);
2696         /* turn on Link Attention interrupts - no CLEAR_LA needed */
2697 }
2698
2699
2700 /*
2701  * This routine handles processing a READ_LA mailbox
2702  * command upon completion. It is setup in the LPFC_MBOXQ
2703  * as the completion routine when the command is
2704  * handed off to the SLI layer.
2705  */
2706 void
2707 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2708 {
2709         struct lpfc_vport *vport = pmb->vport;
2710         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2711         READ_LA_VAR *la;
2712         MAILBOX_t *mb = &pmb->u.mb;
2713         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2714
2715         /* Unblock ELS traffic */
2716         phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
2717         /* Check for error */
2718         if (mb->mbxStatus) {
2719                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
2720                                 "1307 READ_LA mbox error x%x state x%x\n",
2721                                 mb->mbxStatus, vport->port_state);
2722                 lpfc_mbx_issue_link_down(phba);
2723                 phba->link_state = LPFC_HBA_ERROR;
2724                 goto lpfc_mbx_cmpl_read_la_free_mbuf;
2725         }
2726
2727         la = (READ_LA_VAR *) &pmb->u.mb.un.varReadLA;
2728
2729         memcpy(&phba->alpa_map[0], mp->virt, 128);
2730
2731         spin_lock_irq(shost->host_lock);
2732         if (la->pb)
2733                 vport->fc_flag |= FC_BYPASSED_MODE;
2734         else
2735                 vport->fc_flag &= ~FC_BYPASSED_MODE;
2736         spin_unlock_irq(shost->host_lock);
2737
2738         if ((phba->fc_eventTag  < la->eventTag) ||
2739             (phba->fc_eventTag == la->eventTag)) {
2740                 phba->fc_stat.LinkMultiEvent++;
2741                 if (la->attType == AT_LINK_UP)
2742                         if (phba->fc_eventTag != 0)
2743                                 lpfc_linkdown(phba);
2744         }
2745
2746         phba->fc_eventTag = la->eventTag;
2747         spin_lock_irq(&phba->hbalock);
2748         if (la->mm)
2749                 phba->sli.sli_flag |= LPFC_MENLO_MAINT;
2750         else
2751                 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
2752         spin_unlock_irq(&phba->hbalock);
2753
2754         phba->link_events++;
2755         if (la->attType == AT_LINK_UP && (!la->mm)) {
2756                 phba->fc_stat.LinkUp++;
2757                 if (phba->link_flag & LS_LOOPBACK_MODE) {
2758                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2759                                         "1306 Link Up Event in loop back mode "
2760                                         "x%x received Data: x%x x%x x%x x%x\n",
2761                                         la->eventTag, phba->fc_eventTag,
2762                                         la->granted_AL_PA, la->UlnkSpeed,
2763                                         phba->alpa_map[0]);
2764                 } else {
2765                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2766                                         "1303 Link Up Event x%x received "
2767                                         "Data: x%x x%x x%x x%x x%x x%x %d\n",
2768                                         la->eventTag, phba->fc_eventTag,
2769                                         la->granted_AL_PA, la->UlnkSpeed,
2770                                         phba->alpa_map[0],
2771                                         la->mm, la->fa,
2772                                         phba->wait_4_mlo_maint_flg);
2773                 }
2774                 lpfc_mbx_process_link_up(phba, la);
2775         } else if (la->attType == AT_LINK_DOWN) {
2776                 phba->fc_stat.LinkDown++;
2777                 if (phba->link_flag & LS_LOOPBACK_MODE) {
2778                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2779                                 "1308 Link Down Event in loop back mode "
2780                                 "x%x received "
2781                                 "Data: x%x x%x x%x\n",
2782                                 la->eventTag, phba->fc_eventTag,
2783                                 phba->pport->port_state, vport->fc_flag);
2784                 }
2785                 else {
2786                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2787                                 "1305 Link Down Event x%x received "
2788                                 "Data: x%x x%x x%x x%x x%x\n",
2789                                 la->eventTag, phba->fc_eventTag,
2790                                 phba->pport->port_state, vport->fc_flag,
2791                                 la->mm, la->fa);
2792                 }
2793                 lpfc_mbx_issue_link_down(phba);
2794         }
2795         if (la->mm && la->attType == AT_LINK_UP) {
2796                 if (phba->link_state != LPFC_LINK_DOWN) {
2797                         phba->fc_stat.LinkDown++;
2798                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2799                                 "1312 Link Down Event x%x received "
2800                                 "Data: x%x x%x x%x\n",
2801                                 la->eventTag, phba->fc_eventTag,
2802                                 phba->pport->port_state, vport->fc_flag);
2803                         lpfc_mbx_issue_link_down(phba);
2804                 } else
2805                         lpfc_enable_la(phba);
2806
2807                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2808                                 "1310 Menlo Maint Mode Link up Event x%x rcvd "
2809                                 "Data: x%x x%x x%x\n",
2810                                 la->eventTag, phba->fc_eventTag,
2811                                 phba->pport->port_state, vport->fc_flag);
2812                 /*
2813                  * The cmnd that triggered this will be waiting for this
2814                  * signal.
2815                  */
2816                 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
2817                 if (phba->wait_4_mlo_maint_flg) {
2818                         phba->wait_4_mlo_maint_flg = 0;
2819                         wake_up_interruptible(&phba->wait_4_mlo_m_q);
2820                 }
2821         }
2822
2823         if (la->fa) {
2824                 if (la->mm)
2825                         lpfc_issue_clear_la(phba, vport);
2826                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
2827                                 "1311 fa %d\n", la->fa);
2828         }
2829
2830 lpfc_mbx_cmpl_read_la_free_mbuf:
2831         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2832         kfree(mp);
2833         mempool_free(pmb, phba->mbox_mem_pool);
2834         return;
2835 }
2836
2837 /*
2838  * This routine handles processing a REG_LOGIN mailbox
2839  * command upon completion. It is setup in the LPFC_MBOXQ
2840  * as the completion routine when the command is
2841  * handed off to the SLI layer.
2842  */
2843 void
2844 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2845 {
2846         struct lpfc_vport  *vport = pmb->vport;
2847         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2848         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2849         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2850
2851         pmb->context1 = NULL;
2852         pmb->context2 = NULL;
2853
2854         if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
2855                 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
2856
2857         if (ndlp->nlp_flag &  NLP_IGNR_REG_CMPL ||
2858                 ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
2859                 /* We rcvd a rscn after issuing this
2860                  * mbox reg login, we may have cycled
2861                  * back through the state and be
2862                  * back at reg login state so this
2863                  * mbox needs to be ignored becase
2864                  * there is another reg login in
2865                  * proccess.
2866                  */
2867                 spin_lock_irq(shost->host_lock);
2868                 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
2869                 spin_unlock_irq(shost->host_lock);
2870                 if (phba->sli_rev == LPFC_SLI_REV4)
2871                         lpfc_sli4_free_rpi(phba,
2872                                 pmb->u.mb.un.varRegLogin.rpi);
2873
2874         } else
2875                 /* Good status, call state machine */
2876                 lpfc_disc_state_machine(vport, ndlp, pmb,
2877                                 NLP_EVT_CMPL_REG_LOGIN);
2878
2879         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2880         kfree(mp);
2881         mempool_free(pmb, phba->mbox_mem_pool);
2882         /* decrement the node reference count held for this callback
2883          * function.
2884          */
2885         lpfc_nlp_put(ndlp);
2886
2887         return;
2888 }
2889
2890 static void
2891 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2892 {
2893         MAILBOX_t *mb = &pmb->u.mb;
2894         struct lpfc_vport *vport = pmb->vport;
2895         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2896
2897         switch (mb->mbxStatus) {
2898         case 0x0011:
2899         case 0x0020:
2900                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2901                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
2902                                  mb->mbxStatus);
2903                 break;
2904         /* If VPI is busy, reset the HBA */
2905         case 0x9700:
2906                 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
2907                         "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n",
2908                         vport->vpi, mb->mbxStatus);
2909                 if (!(phba->pport->load_flag & FC_UNLOADING))
2910                         lpfc_workq_post_event(phba, NULL, NULL,
2911                                 LPFC_EVT_RESET_HBA);
2912         }
2913         spin_lock_irq(shost->host_lock);
2914         vport->vpi_state &= ~LPFC_VPI_REGISTERED;
2915         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
2916         spin_unlock_irq(shost->host_lock);
2917         vport->unreg_vpi_cmpl = VPORT_OK;
2918         mempool_free(pmb, phba->mbox_mem_pool);
2919         /*
2920          * This shost reference might have been taken at the beginning of
2921          * lpfc_vport_delete()
2922          */
2923         if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
2924                 scsi_host_put(shost);
2925 }
2926
2927 int
2928 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
2929 {
2930         struct lpfc_hba  *phba = vport->phba;
2931         LPFC_MBOXQ_t *mbox;
2932         int rc;
2933
2934         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2935         if (!mbox)
2936                 return 1;
2937
2938         lpfc_unreg_vpi(phba, vport->vpi, mbox);
2939         mbox->vport = vport;
2940         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
2941         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2942         if (rc == MBX_NOT_FINISHED) {
2943                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
2944                                  "1800 Could not issue unreg_vpi\n");
2945                 mempool_free(mbox, phba->mbox_mem_pool);
2946                 vport->unreg_vpi_cmpl = VPORT_ERROR;
2947                 return rc;
2948         }
2949         return 0;
2950 }
2951
2952 static void
2953 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2954 {
2955         struct lpfc_vport *vport = pmb->vport;
2956         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2957         MAILBOX_t *mb = &pmb->u.mb;
2958
2959         switch (mb->mbxStatus) {
2960         case 0x0011:
2961         case 0x9601:
2962         case 0x9602:
2963                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2964                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
2965                                  mb->mbxStatus);
2966                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2967                 spin_lock_irq(shost->host_lock);
2968                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2969                 spin_unlock_irq(shost->host_lock);
2970                 vport->fc_myDID = 0;
2971                 goto out;
2972         }
2973
2974         spin_lock_irq(shost->host_lock);
2975         vport->vpi_state |= LPFC_VPI_REGISTERED;
2976         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
2977         spin_unlock_irq(shost->host_lock);
2978         vport->num_disc_nodes = 0;
2979         /* go thru NPR list and issue ELS PLOGIs */
2980         if (vport->fc_npr_cnt)
2981                 lpfc_els_disc_plogi(vport);
2982
2983         if (!vport->num_disc_nodes) {
2984                 spin_lock_irq(shost->host_lock);
2985                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2986                 spin_unlock_irq(shost->host_lock);
2987                 lpfc_can_disctmo(vport);
2988         }
2989         vport->port_state = LPFC_VPORT_READY;
2990
2991 out:
2992         mempool_free(pmb, phba->mbox_mem_pool);
2993         return;
2994 }
2995
2996 /**
2997  * lpfc_create_static_vport - Read HBA config region to create static vports.
2998  * @phba: pointer to lpfc hba data structure.
2999  *
3000  * This routine issue a DUMP mailbox command for config region 22 to get
3001  * the list of static vports to be created. The function create vports
3002  * based on the information returned from the HBA.
3003  **/
3004 void
3005 lpfc_create_static_vport(struct lpfc_hba *phba)
3006 {
3007         LPFC_MBOXQ_t *pmb = NULL;
3008         MAILBOX_t *mb;
3009         struct static_vport_info *vport_info;
3010         int rc = 0, i;
3011         struct fc_vport_identifiers vport_id;
3012         struct fc_vport *new_fc_vport;
3013         struct Scsi_Host *shost;
3014         struct lpfc_vport *vport;
3015         uint16_t offset = 0;
3016         uint8_t *vport_buff;
3017         struct lpfc_dmabuf *mp;
3018         uint32_t byte_count = 0;
3019
3020         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3021         if (!pmb) {
3022                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3023                                 "0542 lpfc_create_static_vport failed to"
3024                                 " allocate mailbox memory\n");
3025                 return;
3026         }
3027
3028         mb = &pmb->u.mb;
3029
3030         vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
3031         if (!vport_info) {
3032                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3033                                 "0543 lpfc_create_static_vport failed to"
3034                                 " allocate vport_info\n");
3035                 mempool_free(pmb, phba->mbox_mem_pool);
3036                 return;
3037         }
3038
3039         vport_buff = (uint8_t *) vport_info;
3040         do {
3041                 if (lpfc_dump_static_vport(phba, pmb, offset))
3042                         goto out;
3043
3044                 pmb->vport = phba->pport;
3045                 rc = lpfc_sli_issue_mbox_wait(phba, pmb, LPFC_MBOX_TMO);
3046
3047                 if ((rc != MBX_SUCCESS) || mb->mbxStatus) {
3048                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3049                                 "0544 lpfc_create_static_vport failed to"
3050                                 " issue dump mailbox command ret 0x%x "
3051                                 "status 0x%x\n",
3052                                 rc, mb->mbxStatus);
3053                         goto out;
3054                 }
3055
3056                 if (phba->sli_rev == LPFC_SLI_REV4) {
3057                         byte_count = pmb->u.mqe.un.mb_words[5];
3058                         mp = (struct lpfc_dmabuf *) pmb->context2;
3059                         if (byte_count > sizeof(struct static_vport_info) -
3060                                         offset)
3061                                 byte_count = sizeof(struct static_vport_info)
3062                                         - offset;
3063                         memcpy(vport_buff + offset, mp->virt, byte_count);
3064                         offset += byte_count;
3065                 } else {
3066                         if (mb->un.varDmp.word_cnt >
3067                                 sizeof(struct static_vport_info) - offset)
3068                                 mb->un.varDmp.word_cnt =
3069                                         sizeof(struct static_vport_info)
3070                                                 - offset;
3071                         byte_count = mb->un.varDmp.word_cnt;
3072                         lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
3073                                 vport_buff + offset,
3074                                 byte_count);
3075
3076                         offset += byte_count;
3077                 }
3078
3079         } while (byte_count &&
3080                 offset < sizeof(struct static_vport_info));
3081
3082
3083         if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
3084                 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
3085                         != VPORT_INFO_REV)) {
3086                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3087                         "0545 lpfc_create_static_vport bad"
3088                         " information header 0x%x 0x%x\n",
3089                         le32_to_cpu(vport_info->signature),
3090                         le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK);
3091
3092                 goto out;
3093         }
3094
3095         shost = lpfc_shost_from_vport(phba->pport);
3096
3097         for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
3098                 memset(&vport_id, 0, sizeof(vport_id));
3099                 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
3100                 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
3101                 if (!vport_id.port_name || !vport_id.node_name)
3102                         continue;
3103
3104                 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
3105                 vport_id.vport_type = FC_PORTTYPE_NPIV;
3106                 vport_id.disable = false;
3107                 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
3108
3109                 if (!new_fc_vport) {
3110                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3111                                 "0546 lpfc_create_static_vport failed to"
3112                                 " create vport\n");
3113                         continue;
3114                 }
3115
3116                 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
3117                 vport->vport_flag |= STATIC_VPORT;
3118         }
3119
3120 out:
3121         kfree(vport_info);
3122         if (rc != MBX_TIMEOUT) {
3123                 if (pmb->context2) {
3124                         mp = (struct lpfc_dmabuf *) pmb->context2;
3125                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3126                         kfree(mp);
3127                 }
3128                 mempool_free(pmb, phba->mbox_mem_pool);
3129         }
3130
3131         return;
3132 }
3133
3134 /*
3135  * This routine handles processing a Fabric REG_LOGIN mailbox
3136  * command upon completion. It is setup in the LPFC_MBOXQ
3137  * as the completion routine when the command is
3138  * handed off to the SLI layer.
3139  */
3140 void
3141 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3142 {
3143         struct lpfc_vport *vport = pmb->vport;
3144         MAILBOX_t *mb = &pmb->u.mb;
3145         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3146         struct lpfc_nodelist *ndlp;
3147
3148         ndlp = (struct lpfc_nodelist *) pmb->context2;
3149         pmb->context1 = NULL;
3150         pmb->context2 = NULL;
3151
3152         if (mb->mbxStatus) {
3153                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
3154                                  "0258 Register Fabric login error: 0x%x\n",
3155                                  mb->mbxStatus);
3156                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3157                 kfree(mp);
3158                 mempool_free(pmb, phba->mbox_mem_pool);
3159
3160                 if (phba->fc_topology == TOPOLOGY_LOOP) {
3161                         /* FLOGI failed, use loop map to make discovery list */
3162                         lpfc_disc_list_loopmap(vport);
3163
3164                         /* Start discovery */
3165                         lpfc_disc_start(vport);
3166                         /* Decrement the reference count to ndlp after the
3167                          * reference to the ndlp are done.
3168                          */
3169                         lpfc_nlp_put(ndlp);
3170                         return;
3171                 }
3172
3173                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3174                 /* Decrement the reference count to ndlp after the reference
3175                  * to the ndlp are done.
3176                  */
3177                 lpfc_nlp_put(ndlp);
3178                 return;
3179         }
3180
3181         ndlp->nlp_rpi = mb->un.varWords[0];
3182         ndlp->nlp_flag |= NLP_RPI_VALID;
3183         ndlp->nlp_type |= NLP_FABRIC;
3184         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3185
3186         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3187                 /* when physical port receive logo donot start
3188                  * vport discovery */
3189                 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
3190                         lpfc_start_fdiscs(phba);
3191                 else
3192                         vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ;
3193                 lpfc_do_scr_ns_plogi(phba, vport);
3194         }
3195
3196         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3197         kfree(mp);
3198         mempool_free(pmb, phba->mbox_mem_pool);
3199
3200         /* Drop the reference count from the mbox at the end after
3201          * all the current reference to the ndlp have been done.
3202          */
3203         lpfc_nlp_put(ndlp);
3204         return;
3205 }
3206
3207 /*
3208  * This routine handles processing a NameServer REG_LOGIN mailbox
3209  * command upon completion. It is setup in the LPFC_MBOXQ
3210  * as the completion routine when the command is
3211  * handed off to the SLI layer.
3212  */
3213 void
3214 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3215 {
3216         MAILBOX_t *mb = &pmb->u.mb;
3217         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3218         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3219         struct lpfc_vport *vport = pmb->vport;
3220
3221         pmb->context1 = NULL;
3222         pmb->context2 = NULL;
3223
3224         if (mb->mbxStatus) {
3225 out:
3226                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3227                                  "0260 Register NameServer error: 0x%x\n",
3228                                  mb->mbxStatus);
3229                 /* decrement the node reference count held for this
3230                  * callback function.
3231                  */
3232                 lpfc_nlp_put(ndlp);
3233                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3234                 kfree(mp);
3235                 mempool_free(pmb, phba->mbox_mem_pool);
3236
3237                 /* If no other thread is using the ndlp, free it */
3238                 lpfc_nlp_not_used(ndlp);
3239
3240                 if (phba->fc_topology == TOPOLOGY_LOOP) {
3241                         /*
3242                          * RegLogin failed, use loop map to make discovery
3243                          * list
3244                          */
3245                         lpfc_disc_list_loopmap(vport);
3246
3247                         /* Start discovery */
3248                         lpfc_disc_start(vport);
3249                         return;
3250                 }
3251                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3252                 return;
3253         }
3254
3255         ndlp->nlp_rpi = mb->un.varWords[0];
3256         ndlp->nlp_flag |= NLP_RPI_VALID;
3257         ndlp->nlp_type |= NLP_FABRIC;
3258         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3259
3260         if (vport->port_state < LPFC_VPORT_READY) {
3261                 /* Link up discovery requires Fabric registration. */
3262                 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
3263                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
3264                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
3265                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
3266                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
3267
3268                 /* Issue SCR just before NameServer GID_FT Query */
3269                 lpfc_issue_els_scr(vport, SCR_DID, 0);
3270         }
3271
3272         vport->fc_ns_retry = 0;
3273         /* Good status, issue CT Request to NameServer */
3274         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
3275                 /* Cannot issue NameServer Query, so finish up discovery */
3276                 goto out;
3277         }
3278
3279         /* decrement the node reference count held for this
3280          * callback function.
3281          */
3282         lpfc_nlp_put(ndlp);
3283         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3284         kfree(mp);
3285         mempool_free(pmb, phba->mbox_mem_pool);
3286
3287         return;
3288 }
3289
3290 static void
3291 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3292 {
3293         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3294         struct fc_rport  *rport;
3295         struct lpfc_rport_data *rdata;
3296         struct fc_rport_identifiers rport_ids;
3297         struct lpfc_hba  *phba = vport->phba;
3298
3299         /* Remote port has reappeared. Re-register w/ FC transport */
3300         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
3301         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
3302         rport_ids.port_id = ndlp->nlp_DID;
3303         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
3304
3305         /*
3306          * We leave our node pointer in rport->dd_data when we unregister a
3307          * FCP target port.  But fc_remote_port_add zeros the space to which
3308          * rport->dd_data points.  So, if we're reusing a previously
3309          * registered port, drop the reference that we took the last time we
3310          * registered the port.
3311          */
3312         if (ndlp->rport && ndlp->rport->dd_data &&
3313             ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
3314                 lpfc_nlp_put(ndlp);
3315
3316         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
3317                 "rport add:       did:x%x flg:x%x type x%x",
3318                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3319
3320         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
3321         if (!rport || !get_device(&rport->dev)) {
3322                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
3323                            "Warning: fc_remote_port_add failed\n");
3324                 return;
3325         }
3326
3327         /* initialize static port data */
3328         rport->maxframe_size = ndlp->nlp_maxframe;
3329         rport->supported_classes = ndlp->nlp_class_sup;
3330         rdata = rport->dd_data;
3331         rdata->pnode = lpfc_nlp_get(ndlp);
3332
3333         if (ndlp->nlp_type & NLP_FCP_TARGET)
3334                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
3335         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
3336                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
3337
3338
3339         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
3340                 fc_remote_port_rolechg(rport, rport_ids.roles);
3341
3342         if ((rport->scsi_target_id != -1) &&
3343             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
3344                 ndlp->nlp_sid = rport->scsi_target_id;
3345         }
3346         return;
3347 }
3348
3349 static void
3350 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
3351 {
3352         struct fc_rport *rport = ndlp->rport;
3353
3354         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
3355                 "rport delete:    did:x%x flg:x%x type x%x",
3356                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3357
3358         fc_remote_port_delete(rport);
3359
3360         return;
3361 }
3362
3363 static void
3364 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
3365 {
3366         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3367
3368         spin_lock_irq(shost->host_lock);
3369         switch (state) {
3370         case NLP_STE_UNUSED_NODE:
3371                 vport->fc_unused_cnt += count;
3372                 break;
3373         case NLP_STE_PLOGI_ISSUE:
3374                 vport->fc_plogi_cnt += count;
3375                 break;
3376         case NLP_STE_ADISC_ISSUE:
3377                 vport->fc_adisc_cnt += count;
3378                 break;
3379         case NLP_STE_REG_LOGIN_ISSUE:
3380                 vport->fc_reglogin_cnt += count;
3381                 break;
3382         case NLP_STE_PRLI_ISSUE:
3383                 vport->fc_prli_cnt += count;
3384                 break;
3385         case NLP_STE_UNMAPPED_NODE:
3386                 vport->fc_unmap_cnt += count;
3387                 break;
3388         case NLP_STE_MAPPED_NODE:
3389                 vport->fc_map_cnt += count;
3390                 break;
3391         case NLP_STE_NPR_NODE:
3392                 vport->fc_npr_cnt += count;
3393                 break;
3394         }
3395         spin_unlock_irq(shost->host_lock);
3396 }
3397
3398 static void
3399 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3400                        int old_state, int new_state)
3401 {
3402         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3403
3404         if (new_state == NLP_STE_UNMAPPED_NODE) {
3405                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
3406                 ndlp->nlp_type |= NLP_FC_NODE;
3407         }
3408         if (new_state == NLP_STE_MAPPED_NODE)
3409                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
3410         if (new_state == NLP_STE_NPR_NODE)
3411                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
3412
3413         /* Transport interface */
3414         if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
3415                             old_state == NLP_STE_UNMAPPED_NODE)) {
3416                 vport->phba->nport_event_cnt++;
3417                 lpfc_unregister_remote_port(ndlp);
3418         }
3419
3420         if (new_state ==  NLP_STE_MAPPED_NODE ||
3421             new_state == NLP_STE_UNMAPPED_NODE) {
3422                 vport->phba->nport_event_cnt++;
3423                 /*
3424                  * Tell the fc transport about the port, if we haven't
3425                  * already. If we have, and it's a scsi entity, be
3426                  * sure to unblock any attached scsi devices
3427                  */
3428                 lpfc_register_remote_port(vport, ndlp);
3429         }
3430         if ((new_state ==  NLP_STE_MAPPED_NODE) &&
3431                 (vport->stat_data_enabled)) {
3432                 /*
3433                  * A new target is discovered, if there is no buffer for
3434                  * statistical data collection allocate buffer.
3435                  */
3436                 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
3437                                          sizeof(struct lpfc_scsicmd_bkt),
3438                                          GFP_KERNEL);
3439
3440                 if (!ndlp->lat_data)
3441                         lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3442                                 "0286 lpfc_nlp_state_cleanup failed to "
3443                                 "allocate statistical data buffer DID "
3444                                 "0x%x\n", ndlp->nlp_DID);
3445         }
3446         /*
3447          * if we added to Mapped list, but the remote port
3448          * registration failed or assigned a target id outside
3449          * our presentable range - move the node to the
3450          * Unmapped List
3451          */
3452         if (new_state == NLP_STE_MAPPED_NODE &&
3453             (!ndlp->rport ||
3454              ndlp->rport->scsi_target_id == -1 ||
3455              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
3456                 spin_lock_irq(shost->host_lock);
3457                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
3458                 spin_unlock_irq(shost->host_lock);
3459                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3460         }
3461 }
3462
3463 static char *
3464 lpfc_nlp_state_name(char *buffer, size_t size, int state)
3465 {
3466         static char *states[] = {
3467                 [NLP_STE_UNUSED_NODE] = "UNUSED",
3468                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
3469                 [NLP_STE_ADISC_ISSUE] = "ADISC",
3470                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
3471                 [NLP_STE_PRLI_ISSUE] = "PRLI",
3472                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
3473                 [NLP_STE_MAPPED_NODE] = "MAPPED",
3474                 [NLP_STE_NPR_NODE] = "NPR",
3475         };
3476
3477         if (state < NLP_STE_MAX_STATE && states[state])
3478                 strlcpy(buffer, states[state], size);
3479         else
3480                 snprintf(buffer, size, "unknown (%d)", state);
3481         return buffer;
3482 }
3483
3484 void
3485 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3486                    int state)
3487 {
3488         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3489         int  old_state = ndlp->nlp_state;
3490         char name1[16], name2[16];
3491
3492         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3493                          "0904 NPort state transition x%06x, %s -> %s\n",
3494                          ndlp->nlp_DID,
3495                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
3496                          lpfc_nlp_state_name(name2, sizeof(name2), state));
3497
3498         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
3499                 "node statechg    did:x%x old:%d ste:%d",
3500                 ndlp->nlp_DID, old_state, state);
3501
3502         if (old_state == NLP_STE_NPR_NODE &&
3503             state != NLP_STE_NPR_NODE)
3504                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
3505         if (old_state == NLP_STE_UNMAPPED_NODE) {
3506                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
3507                 ndlp->nlp_type &= ~NLP_FC_NODE;
3508         }
3509
3510         if (list_empty(&ndlp->nlp_listp)) {
3511                 spin_lock_irq(shost->host_lock);
3512                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
3513                 spin_unlock_irq(shost->host_lock);
3514         } else if (old_state)
3515                 lpfc_nlp_counters(vport, old_state, -1);
3516
3517         ndlp->nlp_state = state;
3518         lpfc_nlp_counters(vport, state, 1);
3519         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
3520 }
3521
3522 void
3523 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3524 {
3525         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3526
3527         if (list_empty(&ndlp->nlp_listp)) {
3528                 spin_lock_irq(shost->host_lock);
3529                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
3530                 spin_unlock_irq(shost->host_lock);
3531         }
3532 }
3533
3534 void
3535 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3536 {
3537         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3538
3539         lpfc_cancel_retry_delay_tmo(vport, ndlp);
3540         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
3541                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
3542         spin_lock_irq(shost->host_lock);
3543         list_del_init(&ndlp->nlp_listp);
3544         spin_unlock_irq(shost->host_lock);
3545         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
3546                                 NLP_STE_UNUSED_NODE);
3547 }
3548
3549 static void
3550 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3551 {
3552         lpfc_cancel_retry_delay_tmo(vport, ndlp);
3553         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
3554                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
3555         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
3556                                 NLP_STE_UNUSED_NODE);
3557 }
3558 /**
3559  * lpfc_initialize_node - Initialize all fields of node object
3560  * @vport: Pointer to Virtual Port object.
3561  * @ndlp: Pointer to FC node object.
3562  * @did: FC_ID of the node.
3563  *
3564  * This function is always called when node object need to be initialized.
3565  * It initializes all the fields of the node object. Although the reference
3566  * to phba from @ndlp can be obtained indirectly through it's reference to
3567  * @vport, a direct reference to phba is taken here by @ndlp. This is due
3568  * to the life-span of the @ndlp might go beyond the existence of @vport as
3569  * the final release of ndlp is determined by its reference count. And, the
3570  * operation on @ndlp needs the reference to phba.
3571  **/
3572 static inline void
3573 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3574         uint32_t did)
3575 {
3576         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
3577         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
3578         init_timer(&ndlp->nlp_delayfunc);
3579         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
3580         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
3581         ndlp->nlp_DID = did;
3582         ndlp->vport = vport;
3583         ndlp->phba = vport->phba;
3584         ndlp->nlp_sid = NLP_NO_SID;
3585         kref_init(&ndlp->kref);
3586         NLP_INT_NODE_ACT(ndlp);
3587         atomic_set(&ndlp->cmd_pending, 0);
3588         ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
3589 }
3590
3591 struct lpfc_nodelist *
3592 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3593                  int state)
3594 {
3595         struct lpfc_hba *phba = vport->phba;
3596         uint32_t did;
3597         unsigned long flags;
3598
3599         if (!ndlp)
3600                 return NULL;
3601
3602         spin_lock_irqsave(&phba->ndlp_lock, flags);
3603         /* The ndlp should not be in memory free mode */
3604         if (NLP_CHK_FREE_REQ(ndlp)) {
3605                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3606                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3607                                 "0277 lpfc_enable_node: ndlp:x%p "
3608                                 "usgmap:x%x refcnt:%d\n",
3609                                 (void *)ndlp, ndlp->nlp_usg_map,
3610                                 atomic_read(&ndlp->kref.refcount));
3611                 return NULL;
3612         }
3613         /* The ndlp should not already be in active mode */
3614         if (NLP_CHK_NODE_ACT(ndlp)) {
3615                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3616                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3617                                 "0278 lpfc_enable_node: ndlp:x%p "
3618                                 "usgmap:x%x refcnt:%d\n",
3619                                 (void *)ndlp, ndlp->nlp_usg_map,
3620                                 atomic_read(&ndlp->kref.refcount));
3621                 return NULL;
3622         }
3623
3624         /* Keep the original DID */
3625         did = ndlp->nlp_DID;
3626
3627         /* re-initialize ndlp except of ndlp linked list pointer */
3628         memset((((char *)ndlp) + sizeof (struct list_head)), 0,
3629                 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
3630         lpfc_initialize_node(vport, ndlp, did);
3631
3632         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3633
3634         if (state != NLP_STE_UNUSED_NODE)
3635                 lpfc_nlp_set_state(vport, ndlp, state);
3636
3637         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
3638                 "node enable:       did:x%x",
3639                 ndlp->nlp_DID, 0, 0);
3640         return ndlp;
3641 }
3642
3643 void
3644 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3645 {
3646         /*
3647          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
3648          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
3649          * the ndlp from the vport. The ndlp marked as UNUSED on the list
3650          * until ALL other outstanding threads have completed. We check
3651          * that the ndlp not already in the UNUSED state before we proceed.
3652          */
3653         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
3654                 return;
3655         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
3656         lpfc_nlp_put(ndlp);
3657         return;
3658 }
3659
3660 /*
3661  * Start / ReStart rescue timer for Discovery / RSCN handling
3662  */
3663 void
3664 lpfc_set_disctmo(struct lpfc_vport *vport)
3665 {
3666         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3667         struct lpfc_hba  *phba = vport->phba;
3668         uint32_t tmo;
3669
3670         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
3671                 /* For FAN, timeout should be greater than edtov */
3672                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
3673         } else {
3674                 /* Normal discovery timeout should be > than ELS/CT timeout
3675                  * FC spec states we need 3 * ratov for CT requests
3676                  */
3677                 tmo = ((phba->fc_ratov * 3) + 3);
3678         }
3679
3680
3681         if (!timer_pending(&vport->fc_disctmo)) {
3682                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3683                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
3684                         tmo, vport->port_state, vport->fc_flag);
3685         }
3686
3687         mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
3688         spin_lock_irq(shost->host_lock);
3689         vport->fc_flag |= FC_DISC_TMO;
3690         spin_unlock_irq(shost->host_lock);
3691
3692         /* Start Discovery Timer state <hba_state> */
3693         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3694                          "0247 Start Discovery Timer state x%x "
3695                          "Data: x%x x%lx x%x x%x\n",
3696                          vport->port_state, tmo,
3697                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
3698                          vport->fc_adisc_cnt);
3699
3700         return;
3701 }
3702
3703 /*
3704  * Cancel rescue timer for Discovery / RSCN handling
3705  */
3706 int
3707 lpfc_can_disctmo(struct lpfc_vport *vport)
3708 {
3709         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3710         unsigned long iflags;
3711
3712         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3713                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
3714                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
3715
3716         /* Turn off discovery timer if its running */
3717         if (vport->fc_flag & FC_DISC_TMO) {
3718                 spin_lock_irqsave(shost->host_lock, iflags);
3719                 vport->fc_flag &= ~FC_DISC_TMO;
3720                 spin_unlock_irqrestore(shost->host_lock, iflags);
3721                 del_timer_sync(&vport->fc_disctmo);
3722                 spin_lock_irqsave(&vport->work_port_lock, iflags);
3723                 vport->work_port_events &= ~WORKER_DISC_TMO;
3724                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
3725         }
3726
3727         /* Cancel Discovery Timer state <hba_state> */
3728         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3729                          "0248 Cancel Discovery Timer state x%x "
3730                          "Data: x%x x%x x%x\n",
3731                          vport->port_state, vport->fc_flag,
3732                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
3733         return 0;
3734 }
3735
3736 /*
3737  * Check specified ring for outstanding IOCB on the SLI queue
3738  * Return true if iocb matches the specified nport
3739  */
3740 int
3741 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
3742                     struct lpfc_sli_ring *pring,
3743                     struct lpfc_iocbq *iocb,
3744                     struct lpfc_nodelist *ndlp)
3745 {
3746         struct lpfc_sli *psli = &phba->sli;
3747         IOCB_t *icmd = &iocb->iocb;
3748         struct lpfc_vport    *vport = ndlp->vport;
3749
3750         if (iocb->vport != vport)
3751                 return 0;
3752
3753         if (pring->ringno == LPFC_ELS_RING) {
3754                 switch (icmd->ulpCommand) {
3755                 case CMD_GEN_REQUEST64_CR:
3756                         if (iocb->context_un.ndlp == ndlp)
3757                                 return 1;
3758                 case CMD_ELS_REQUEST64_CR:
3759                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
3760                                 return 1;
3761                 case CMD_XMIT_ELS_RSP64_CX:
3762                         if (iocb->context1 == (uint8_t *) ndlp)
3763                                 return 1;
3764                 }
3765         } else if (pring->ringno == psli->extra_ring) {
3766
3767         } else if (pring->ringno == psli->fcp_ring) {
3768                 /* Skip match check if waiting to relogin to FCP target */
3769                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
3770                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
3771                         return 0;
3772                 }
3773                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
3774                         return 1;
3775                 }
3776         } else if (pring->ringno == psli->next_ring) {
3777
3778         }
3779         return 0;
3780 }
3781
3782 /*
3783  * Free resources / clean up outstanding I/Os
3784  * associated with nlp_rpi in the LPFC_NODELIST entry.
3785  */
3786 static int
3787 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
3788 {
3789         LIST_HEAD(completions);
3790         struct lpfc_sli *psli;
3791         struct lpfc_sli_ring *pring;
3792         struct lpfc_iocbq *iocb, *next_iocb;
3793         uint32_t i;
3794
3795         lpfc_fabric_abort_nport(ndlp);
3796
3797         /*
3798          * Everything that matches on txcmplq will be returned
3799          * by firmware with a no rpi error.
3800          */
3801         psli = &phba->sli;
3802         if (ndlp->nlp_flag & NLP_RPI_VALID) {
3803                 /* Now process each ring */
3804                 for (i = 0; i < psli->num_rings; i++) {
3805                         pring = &psli->ring[i];
3806
3807                         spin_lock_irq(&phba->hbalock);
3808                         list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
3809                                                  list) {
3810                                 /*
3811                                  * Check to see if iocb matches the nport we are
3812                                  * looking for
3813                                  */
3814                                 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
3815                                                          ndlp))) {
3816                                         /* It matches, so deque and call compl
3817                                            with an error */
3818                                         list_move_tail(&iocb->list,
3819                                                        &completions);
3820                                         pring->txq_cnt--;
3821                                 }
3822                         }
3823                         spin_unlock_irq(&phba->hbalock);
3824                 }
3825         }
3826
3827         /* Cancel all the IOCBs from the completions list */
3828         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
3829                               IOERR_SLI_ABORTED);
3830
3831         return 0;
3832 }
3833
3834 /*
3835  * Free rpi associated with LPFC_NODELIST entry.
3836  * This routine is called from lpfc_freenode(), when we are removing
3837  * a LPFC_NODELIST entry. It is also called if the driver initiates a
3838  * LOGO that completes successfully, and we are waiting to PLOGI back
3839  * to the remote NPort. In addition, it is called after we receive
3840  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
3841  * we are waiting to PLOGI back to the remote NPort.
3842  */
3843 int
3844 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3845 {
3846         struct lpfc_hba *phba = vport->phba;
3847         LPFC_MBOXQ_t    *mbox;
3848         int rc;
3849
3850         if (ndlp->nlp_flag & NLP_RPI_VALID) {
3851                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3852                 if (mbox) {
3853                         lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
3854                         mbox->vport = vport;
3855                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3856                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3857                         if (rc == MBX_NOT_FINISHED)
3858                                 mempool_free(mbox, phba->mbox_mem_pool);
3859                 }
3860                 lpfc_no_rpi(phba, ndlp);
3861
3862                 ndlp->nlp_rpi = 0;
3863                 ndlp->nlp_flag &= ~NLP_RPI_VALID;
3864                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
3865                 return 1;
3866         }
3867         return 0;
3868 }
3869
3870 /**
3871  * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
3872  * @phba: pointer to lpfc hba data structure.
3873  *
3874  * This routine is invoked to unregister all the currently registered RPIs
3875  * to the HBA.
3876  **/
3877 void
3878 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
3879 {
3880         struct lpfc_vport **vports;
3881         struct lpfc_nodelist *ndlp;
3882         struct Scsi_Host *shost;
3883         int i;
3884
3885         vports = lpfc_create_vport_work_array(phba);
3886         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3887                 shost = lpfc_shost_from_vport(vports[i]);
3888                 spin_lock_irq(shost->host_lock);
3889                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
3890                         if (ndlp->nlp_flag & NLP_RPI_VALID) {
3891                                 /* The mempool_alloc might sleep */
3892                                 spin_unlock_irq(shost->host_lock);
3893                                 lpfc_unreg_rpi(vports[i], ndlp);
3894                                 spin_lock_irq(shost->host_lock);
3895                         }
3896                 }
3897                 spin_unlock_irq(shost->host_lock);
3898         }
3899         lpfc_destroy_vport_work_array(phba, vports);
3900 }
3901
3902 void
3903 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
3904 {
3905         struct lpfc_hba  *phba  = vport->phba;
3906         LPFC_MBOXQ_t     *mbox;
3907         int rc;
3908
3909         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3910         if (mbox) {
3911                 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
3912                 mbox->vport = vport;
3913                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3914                 mbox->context1 = NULL;
3915                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
3916                 if (rc != MBX_TIMEOUT)
3917                         mempool_free(mbox, phba->mbox_mem_pool);
3918
3919                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
3920                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
3921                                 "1836 Could not issue "
3922                                 "unreg_login(all_rpis) status %d\n", rc);
3923         }
3924 }
3925
3926 void
3927 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
3928 {
3929         struct lpfc_hba  *phba  = vport->phba;
3930         LPFC_MBOXQ_t     *mbox;
3931         int rc;
3932
3933         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3934         if (mbox) {
3935                 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
3936                 mbox->vport = vport;
3937                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3938                 mbox->context1 = NULL;
3939                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
3940                 if (rc != MBX_TIMEOUT)
3941                         mempool_free(mbox, phba->mbox_mem_pool);
3942
3943                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
3944                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
3945                                          "1815 Could not issue "
3946                                          "unreg_did (default rpis) status %d\n",
3947                                          rc);
3948         }
3949 }
3950
3951 /*
3952  * Free resources associated with LPFC_NODELIST entry
3953  * so it can be freed.
3954  */
3955 static int
3956 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3957 {
3958         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3959         struct lpfc_hba  *phba = vport->phba;
3960         LPFC_MBOXQ_t *mb, *nextmb;
3961         struct lpfc_dmabuf *mp;
3962
3963         /* Cleanup node for NPort <nlp_DID> */
3964         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3965                          "0900 Cleanup node for NPort x%x "
3966                          "Data: x%x x%x x%x\n",
3967                          ndlp->nlp_DID, ndlp->nlp_flag,
3968                          ndlp->nlp_state, ndlp->nlp_rpi);
3969         if (NLP_CHK_FREE_REQ(ndlp)) {
3970                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3971                                 "0280 lpfc_cleanup_node: ndlp:x%p "
3972                                 "usgmap:x%x refcnt:%d\n",
3973                                 (void *)ndlp, ndlp->nlp_usg_map,
3974                                 atomic_read(&ndlp->kref.refcount));
3975                 lpfc_dequeue_node(vport, ndlp);
3976         } else {
3977                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3978                                 "0281 lpfc_cleanup_node: ndlp:x%p "
3979                                 "usgmap:x%x refcnt:%d\n",
3980                                 (void *)ndlp, ndlp->nlp_usg_map,
3981                                 atomic_read(&ndlp->kref.refcount));
3982                 lpfc_disable_node(vport, ndlp);
3983         }
3984
3985         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
3986         if ((mb = phba->sli.mbox_active)) {
3987                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
3988                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
3989                         mb->context2 = NULL;
3990                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3991                 }
3992         }
3993
3994         spin_lock_irq(&phba->hbalock);
3995         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
3996                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
3997                     (ndlp == (struct lpfc_nodelist *) mb->context2)) {
3998                         mp = (struct lpfc_dmabuf *) (mb->context1);
3999                         if (mp) {
4000                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
4001                                 kfree(mp);
4002                         }
4003                         list_del(&mb->list);
4004                         if (phba->sli_rev == LPFC_SLI_REV4)
4005                                 lpfc_sli4_free_rpi(phba,
4006                                          mb->u.mb.un.varRegLogin.rpi);
4007                         mempool_free(mb, phba->mbox_mem_pool);
4008                         /* We shall not invoke the lpfc_nlp_put to decrement
4009                          * the ndlp reference count as we are in the process
4010                          * of lpfc_nlp_release.
4011                          */
4012                 }
4013         }
4014         spin_unlock_irq(&phba->hbalock);
4015
4016         lpfc_els_abort(phba, ndlp);
4017
4018         spin_lock_irq(shost->host_lock);
4019         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
4020         spin_unlock_irq(shost->host_lock);
4021
4022         ndlp->nlp_last_elscmd = 0;
4023         del_timer_sync(&ndlp->nlp_delayfunc);
4024
4025         list_del_init(&ndlp->els_retry_evt.evt_listp);
4026         list_del_init(&ndlp->dev_loss_evt.evt_listp);
4027
4028         lpfc_unreg_rpi(vport, ndlp);
4029
4030         return 0;
4031 }
4032
4033 /*
4034  * Check to see if we can free the nlp back to the freelist.
4035  * If we are in the middle of using the nlp in the discovery state
4036  * machine, defer the free till we reach the end of the state machine.
4037  */
4038 static void
4039 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4040 {
4041         struct lpfc_hba  *phba = vport->phba;
4042         struct lpfc_rport_data *rdata;
4043         LPFC_MBOXQ_t *mbox;
4044         int rc;
4045
4046         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4047         if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
4048                 !(ndlp->nlp_flag & NLP_REG_LOGIN_SEND) &&
4049             !(ndlp->nlp_flag & NLP_RPI_VALID)) {
4050                 /* For this case we need to cleanup the default rpi
4051                  * allocated by the firmware.
4052                  */
4053                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
4054                         != NULL) {
4055                         rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID,
4056                             (uint8_t *) &vport->fc_sparam, mbox, 0);
4057                         if (rc) {
4058                                 mempool_free(mbox, phba->mbox_mem_pool);
4059                         }
4060                         else {
4061                                 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
4062                                 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
4063                                 mbox->vport = vport;
4064                                 mbox->context2 = NULL;
4065                                 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4066                                 if (rc == MBX_NOT_FINISHED) {
4067                                         mempool_free(mbox, phba->mbox_mem_pool);
4068                                 }
4069                         }
4070                 }
4071         }
4072         lpfc_cleanup_node(vport, ndlp);
4073
4074         /*
4075          * We can get here with a non-NULL ndlp->rport because when we
4076          * unregister a rport we don't break the rport/node linkage.  So if we
4077          * do, make sure we don't leaving any dangling pointers behind.
4078          */
4079         if (ndlp->rport) {
4080                 rdata = ndlp->rport->dd_data;
4081                 rdata->pnode = NULL;
4082                 ndlp->rport = NULL;
4083         }
4084 }
4085
4086 static int
4087 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4088               uint32_t did)
4089 {
4090         D_ID mydid, ndlpdid, matchdid;
4091
4092         if (did == Bcast_DID)
4093                 return 0;
4094
4095         /* First check for Direct match */
4096         if (ndlp->nlp_DID == did)
4097                 return 1;
4098
4099         /* Next check for area/domain identically equals 0 match */
4100         mydid.un.word = vport->fc_myDID;
4101         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
4102                 return 0;
4103         }
4104
4105         matchdid.un.word = did;
4106         ndlpdid.un.word = ndlp->nlp_DID;
4107         if (matchdid.un.b.id == ndlpdid.un.b.id) {
4108                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
4109                     (mydid.un.b.area == matchdid.un.b.area)) {
4110                         if ((ndlpdid.un.b.domain == 0) &&
4111                             (ndlpdid.un.b.area == 0)) {
4112                                 if (ndlpdid.un.b.id)
4113                                         return 1;
4114                         }
4115                         return 0;
4116                 }
4117
4118                 matchdid.un.word = ndlp->nlp_DID;
4119                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
4120                     (mydid.un.b.area == ndlpdid.un.b.area)) {
4121                         if ((matchdid.un.b.domain == 0) &&
4122                             (matchdid.un.b.area == 0)) {
4123                                 if (matchdid.un.b.id)
4124                                         return 1;
4125                         }
4126                 }
4127         }
4128         return 0;
4129 }
4130
4131 /* Search for a nodelist entry */
4132 static struct lpfc_nodelist *
4133 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
4134 {
4135         struct lpfc_nodelist *ndlp;
4136         uint32_t data1;
4137
4138         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4139                 if (lpfc_matchdid(vport, ndlp, did)) {
4140                         data1 = (((uint32_t) ndlp->nlp_state << 24) |
4141                                  ((uint32_t) ndlp->nlp_xri << 16) |
4142                                  ((uint32_t) ndlp->nlp_type << 8) |
4143                                  ((uint32_t) ndlp->nlp_rpi & 0xff));
4144                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4145                                          "0929 FIND node DID "
4146                                          "Data: x%p x%x x%x x%x\n",
4147                                          ndlp, ndlp->nlp_DID,
4148                                          ndlp->nlp_flag, data1);
4149                         return ndlp;
4150                 }
4151         }
4152
4153         /* FIND node did <did> NOT FOUND */
4154         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4155                          "0932 FIND node did x%x NOT FOUND.\n", did);
4156         return NULL;
4157 }
4158
4159 struct lpfc_nodelist *
4160 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
4161 {
4162         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4163         struct lpfc_nodelist *ndlp;
4164
4165         spin_lock_irq(shost->host_lock);
4166         ndlp = __lpfc_findnode_did(vport, did);
4167         spin_unlock_irq(shost->host_lock);
4168         return ndlp;
4169 }
4170
4171 struct lpfc_nodelist *
4172 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
4173 {
4174         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4175         struct lpfc_nodelist *ndlp;
4176
4177         ndlp = lpfc_findnode_did(vport, did);
4178         if (!ndlp) {
4179                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
4180                     lpfc_rscn_payload_check(vport, did) == 0)
4181                         return NULL;
4182                 ndlp = (struct lpfc_nodelist *)
4183                      mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
4184                 if (!ndlp)
4185                         return NULL;
4186                 lpfc_nlp_init(vport, ndlp, did);
4187                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
4188                 spin_lock_irq(shost->host_lock);
4189                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4190                 spin_unlock_irq(shost->host_lock);
4191                 return ndlp;
4192         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
4193                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
4194                 if (!ndlp)
4195                         return NULL;
4196                 spin_lock_irq(shost->host_lock);
4197                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4198                 spin_unlock_irq(shost->host_lock);
4199                 return ndlp;
4200         }
4201
4202         if ((vport->fc_flag & FC_RSCN_MODE) &&
4203             !(vport->fc_flag & FC_NDISC_ACTIVE)) {
4204                 if (lpfc_rscn_payload_check(vport, did)) {
4205                         /* If we've already recieved a PLOGI from this NPort
4206                          * we don't need to try to discover it again.
4207                          */
4208                         if (ndlp->nlp_flag & NLP_RCV_PLOGI)
4209                                 return NULL;
4210
4211                         /* Since this node is marked for discovery,
4212                          * delay timeout is not needed.
4213                          */
4214                         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4215                         spin_lock_irq(shost->host_lock);
4216                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4217                         spin_unlock_irq(shost->host_lock);
4218                 } else
4219                         ndlp = NULL;
4220         } else {
4221                 /* If we've already recieved a PLOGI from this NPort,
4222                  * or we are already in the process of discovery on it,
4223                  * we don't need to try to discover it again.
4224                  */
4225                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
4226                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
4227                     ndlp->nlp_flag & NLP_RCV_PLOGI)
4228                         return NULL;
4229                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
4230                 spin_lock_irq(shost->host_lock);
4231                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4232                 spin_unlock_irq(shost->host_lock);
4233         }
4234         return ndlp;
4235 }
4236
4237 /* Build a list of nodes to discover based on the loopmap */
4238 void
4239 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
4240 {
4241         struct lpfc_hba  *phba = vport->phba;
4242         int j;
4243         uint32_t alpa, index;
4244
4245         if (!lpfc_is_link_up(phba))
4246                 return;
4247
4248         if (phba->fc_topology != TOPOLOGY_LOOP)
4249                 return;
4250
4251         /* Check for loop map present or not */
4252         if (phba->alpa_map[0]) {
4253                 for (j = 1; j <= phba->alpa_map[0]; j++) {
4254                         alpa = phba->alpa_map[j];
4255                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
4256                                 continue;
4257                         lpfc_setup_disc_node(vport, alpa);
4258                 }
4259         } else {
4260                 /* No alpamap, so try all alpa's */
4261                 for (j = 0; j < FC_MAXLOOP; j++) {
4262                         /* If cfg_scan_down is set, start from highest
4263                          * ALPA (0xef) to lowest (0x1).
4264                          */
4265                         if (vport->cfg_scan_down)
4266                                 index = j;
4267                         else
4268                                 index = FC_MAXLOOP - j - 1;
4269                         alpa = lpfcAlpaArray[index];
4270                         if ((vport->fc_myDID & 0xff) == alpa)
4271                                 continue;
4272                         lpfc_setup_disc_node(vport, alpa);
4273                 }
4274         }
4275         return;
4276 }
4277
4278 void
4279 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
4280 {
4281         LPFC_MBOXQ_t *mbox;
4282         struct lpfc_sli *psli = &phba->sli;
4283         struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
4284         struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
4285         struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
4286         int  rc;
4287
4288         /*
4289          * if it's not a physical port or if we already send
4290          * clear_la then don't send it.
4291          */
4292         if ((phba->link_state >= LPFC_CLEAR_LA) ||
4293             (vport->port_type != LPFC_PHYSICAL_PORT) ||
4294                 (phba->sli_rev == LPFC_SLI_REV4))
4295                 return;
4296
4297                         /* Link up discovery */
4298         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
4299                 phba->link_state = LPFC_CLEAR_LA;
4300                 lpfc_clear_la(phba, mbox);
4301                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
4302                 mbox->vport = vport;
4303                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4304                 if (rc == MBX_NOT_FINISHED) {
4305                         mempool_free(mbox, phba->mbox_mem_pool);
4306                         lpfc_disc_flush_list(vport);
4307                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4308                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4309                         next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4310                         phba->link_state = LPFC_HBA_ERROR;
4311                 }
4312         }
4313 }
4314
4315 /* Reg_vpi to tell firmware to resume normal operations */
4316 void
4317 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
4318 {
4319         LPFC_MBOXQ_t *regvpimbox;
4320
4321         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4322         if (regvpimbox) {
4323                 lpfc_reg_vpi(vport, regvpimbox);
4324                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
4325                 regvpimbox->vport = vport;
4326                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
4327                                         == MBX_NOT_FINISHED) {
4328                         mempool_free(regvpimbox, phba->mbox_mem_pool);
4329                 }
4330         }
4331 }
4332
4333 /* Start Link up / RSCN discovery on NPR nodes */
4334 void
4335 lpfc_disc_start(struct lpfc_vport *vport)
4336 {
4337         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4338         struct lpfc_hba  *phba = vport->phba;
4339         uint32_t num_sent;
4340         uint32_t clear_la_pending;
4341         int did_changed;
4342
4343         if (!lpfc_is_link_up(phba))
4344                 return;
4345
4346         if (phba->link_state == LPFC_CLEAR_LA)
4347                 clear_la_pending = 1;
4348         else
4349                 clear_la_pending = 0;
4350
4351         if (vport->port_state < LPFC_VPORT_READY)
4352                 vport->port_state = LPFC_DISC_AUTH;
4353
4354         lpfc_set_disctmo(vport);
4355
4356         if (vport->fc_prevDID == vport->fc_myDID)
4357                 did_changed = 0;
4358         else
4359                 did_changed = 1;
4360
4361         vport->fc_prevDID = vport->fc_myDID;
4362         vport->num_disc_nodes = 0;
4363
4364         /* Start Discovery state <hba_state> */
4365         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4366                          "0202 Start Discovery hba state x%x "
4367                          "Data: x%x x%x x%x\n",
4368                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
4369                          vport->fc_adisc_cnt);
4370
4371         /* First do ADISCs - if any */
4372         num_sent = lpfc_els_disc_adisc(vport);
4373
4374         if (num_sent)
4375                 return;
4376
4377         /*
4378          * For SLI3, cmpl_reg_vpi will set port_state to READY, and
4379          * continue discovery.
4380          */
4381         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
4382             !(vport->fc_flag & FC_PT2PT) &&
4383             !(vport->fc_flag & FC_RSCN_MODE) &&
4384             (phba->sli_rev < LPFC_SLI_REV4)) {
4385                 lpfc_issue_reg_vpi(phba, vport);
4386                 return;
4387         }
4388
4389         /*
4390          * For SLI2, we need to set port_state to READY and continue
4391          * discovery.
4392          */
4393         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
4394                 /* If we get here, there is nothing to ADISC */
4395                 if (vport->port_type == LPFC_PHYSICAL_PORT)
4396                         lpfc_issue_clear_la(phba, vport);
4397
4398                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
4399                         vport->num_disc_nodes = 0;
4400                         /* go thru NPR nodes and issue ELS PLOGIs */
4401                         if (vport->fc_npr_cnt)
4402                                 lpfc_els_disc_plogi(vport);
4403
4404                         if (!vport->num_disc_nodes) {
4405                                 spin_lock_irq(shost->host_lock);
4406                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
4407                                 spin_unlock_irq(shost->host_lock);
4408                                 lpfc_can_disctmo(vport);
4409                         }
4410                 }
4411                 vport->port_state = LPFC_VPORT_READY;
4412         } else {
4413                 /* Next do PLOGIs - if any */
4414                 num_sent = lpfc_els_disc_plogi(vport);
4415
4416                 if (num_sent)
4417                         return;
4418
4419                 if (vport->fc_flag & FC_RSCN_MODE) {
4420                         /* Check to see if more RSCNs came in while we
4421                          * were processing this one.
4422                          */
4423                         if ((vport->fc_rscn_id_cnt == 0) &&
4424                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
4425                                 spin_lock_irq(shost->host_lock);
4426                                 vport->fc_flag &= ~FC_RSCN_MODE;
4427                                 spin_unlock_irq(shost->host_lock);
4428                                 lpfc_can_disctmo(vport);
4429                         } else
4430                                 lpfc_els_handle_rscn(vport);
4431                 }
4432         }
4433         return;
4434 }
4435
4436 /*
4437  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
4438  *  ring the match the sppecified nodelist.
4439  */
4440 static void
4441 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
4442 {
4443         LIST_HEAD(completions);
4444         struct lpfc_sli *psli;
4445         IOCB_t     *icmd;
4446         struct lpfc_iocbq    *iocb, *next_iocb;
4447         struct lpfc_sli_ring *pring;
4448
4449         psli = &phba->sli;
4450         pring = &psli->ring[LPFC_ELS_RING];
4451
4452         /* Error matching iocb on txq or txcmplq
4453          * First check the txq.
4454          */
4455         spin_lock_irq(&phba->hbalock);
4456         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
4457                 if (iocb->context1 != ndlp) {
4458                         continue;
4459                 }
4460                 icmd = &iocb->iocb;
4461                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
4462                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
4463
4464                         list_move_tail(&iocb->list, &completions);
4465                         pring->txq_cnt--;
4466                 }
4467         }
4468
4469         /* Next check the txcmplq */
4470         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
4471                 if (iocb->context1 != ndlp) {
4472                         continue;
4473                 }
4474                 icmd = &iocb->iocb;
4475                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
4476                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
4477                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
4478                 }
4479         }
4480         spin_unlock_irq(&phba->hbalock);
4481
4482         /* Cancel all the IOCBs from the completions list */
4483         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
4484                               IOERR_SLI_ABORTED);
4485 }
4486
4487 static void
4488 lpfc_disc_flush_list(struct lpfc_vport *vport)
4489 {
4490         struct lpfc_nodelist *ndlp, *next_ndlp;
4491         struct lpfc_hba *phba = vport->phba;
4492
4493         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
4494                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
4495                                          nlp_listp) {
4496                         if (!NLP_CHK_NODE_ACT(ndlp))
4497                                 continue;
4498                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
4499                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
4500                                 lpfc_free_tx(phba, ndlp);
4501                         }
4502                 }
4503         }
4504 }
4505
4506 void
4507 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
4508 {
4509         lpfc_els_flush_rscn(vport);
4510         lpfc_els_flush_cmd(vport);
4511         lpfc_disc_flush_list(vport);
4512 }
4513
4514 /*****************************************************************************/
4515 /*
4516  * NAME:     lpfc_disc_timeout
4517  *
4518  * FUNCTION: Fibre Channel driver discovery timeout routine.
4519  *
4520  * EXECUTION ENVIRONMENT: interrupt only
4521  *
4522  * CALLED FROM:
4523  *      Timer function
4524  *
4525  * RETURNS:
4526  *      none
4527  */
4528 /*****************************************************************************/
4529 void
4530 lpfc_disc_timeout(unsigned long ptr)
4531 {
4532         struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
4533         struct lpfc_hba   *phba = vport->phba;
4534         uint32_t tmo_posted;
4535         unsigned long flags = 0;
4536
4537         if (unlikely(!phba))
4538                 return;
4539
4540         spin_lock_irqsave(&vport->work_port_lock, flags);
4541         tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
4542         if (!tmo_posted)
4543                 vport->work_port_events |= WORKER_DISC_TMO;
4544         spin_unlock_irqrestore(&vport->work_port_lock, flags);
4545
4546         if (!tmo_posted)
4547                 lpfc_worker_wake_up(phba);
4548         return;
4549 }
4550
4551 static void
4552 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
4553 {
4554         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4555         struct lpfc_hba  *phba = vport->phba;
4556         struct lpfc_sli  *psli = &phba->sli;
4557         struct lpfc_nodelist *ndlp, *next_ndlp;
4558         LPFC_MBOXQ_t *initlinkmbox;
4559         int rc, clrlaerr = 0;
4560
4561         if (!(vport->fc_flag & FC_DISC_TMO))
4562                 return;
4563
4564         spin_lock_irq(shost->host_lock);
4565         vport->fc_flag &= ~FC_DISC_TMO;
4566         spin_unlock_irq(shost->host_lock);
4567
4568         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4569                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
4570                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
4571
4572         switch (vport->port_state) {
4573
4574         case LPFC_LOCAL_CFG_LINK:
4575         /* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
4576          * FAN
4577          */
4578                                 /* FAN timeout */
4579                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
4580                                  "0221 FAN timeout\n");
4581                 /* Start discovery by sending FLOGI, clean up old rpis */
4582                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
4583                                          nlp_listp) {
4584                         if (!NLP_CHK_NODE_ACT(ndlp))
4585                                 continue;
4586                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
4587                                 continue;
4588                         if (ndlp->nlp_type & NLP_FABRIC) {
4589                                 /* Clean up the ndlp on Fabric connections */
4590                                 lpfc_drop_node(vport, ndlp);
4591
4592                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
4593                                 /* Fail outstanding IO now since device
4594                                  * is marked for PLOGI.
4595                                  */
4596                                 lpfc_unreg_rpi(vport, ndlp);
4597                         }
4598                 }
4599                 if (vport->port_state != LPFC_FLOGI) {
4600                         lpfc_initial_flogi(vport);
4601                         return;
4602                 }
4603                 break;
4604
4605         case LPFC_FDISC:
4606         case LPFC_FLOGI:
4607         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
4608                 /* Initial FLOGI timeout */
4609                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4610                                  "0222 Initial %s timeout\n",
4611                                  vport->vpi ? "FDISC" : "FLOGI");
4612
4613                 /* Assume no Fabric and go on with discovery.
4614                  * Check for outstanding ELS FLOGI to abort.
4615                  */
4616
4617                 /* FLOGI failed, so just use loop map to make discovery list */
4618                 lpfc_disc_list_loopmap(vport);
4619
4620                 /* Start discovery */
4621                 lpfc_disc_start(vport);
4622                 break;
4623
4624         case LPFC_FABRIC_CFG_LINK:
4625         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
4626            NameServer login */
4627                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4628                                  "0223 Timeout while waiting for "
4629                                  "NameServer login\n");
4630                 /* Next look for NameServer ndlp */
4631                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
4632                 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
4633                         lpfc_els_abort(phba, ndlp);
4634
4635                 /* ReStart discovery */
4636                 goto restart_disc;
4637
4638         case LPFC_NS_QRY:
4639         /* Check for wait for NameServer Rsp timeout */
4640                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4641                                  "0224 NameServer Query timeout "
4642                                  "Data: x%x x%x\n",
4643                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
4644
4645                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
4646                         /* Try it one more time */
4647                         vport->fc_ns_retry++;
4648                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
4649                                          vport->fc_ns_retry, 0);
4650                         if (rc == 0)
4651                                 break;
4652                 }
4653                 vport->fc_ns_retry = 0;
4654
4655 restart_disc:
4656                 /*
4657                  * Discovery is over.
4658                  * set port_state to PORT_READY if SLI2.
4659                  * cmpl_reg_vpi will set port_state to READY for SLI3.
4660                  */
4661                 if (phba->sli_rev < LPFC_SLI_REV4) {
4662                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
4663                                 lpfc_issue_reg_vpi(phba, vport);
4664                         else  { /* NPIV Not enabled */
4665                                 lpfc_issue_clear_la(phba, vport);
4666                                 vport->port_state = LPFC_VPORT_READY;
4667                         }
4668                 }
4669
4670                 /* Setup and issue mailbox INITIALIZE LINK command */
4671                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4672                 if (!initlinkmbox) {
4673                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4674                                          "0206 Device Discovery "
4675                                          "completion error\n");
4676                         phba->link_state = LPFC_HBA_ERROR;
4677                         break;
4678                 }
4679
4680                 lpfc_linkdown(phba);
4681                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
4682                                phba->cfg_link_speed);
4683                 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
4684                 initlinkmbox->vport = vport;
4685                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4686                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
4687                 lpfc_set_loopback_flag(phba);
4688                 if (rc == MBX_NOT_FINISHED)
4689                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
4690
4691                 break;
4692
4693         case LPFC_DISC_AUTH:
4694         /* Node Authentication timeout */
4695                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4696                                  "0227 Node Authentication timeout\n");
4697                 lpfc_disc_flush_list(vport);
4698
4699                 /*
4700                  * set port_state to PORT_READY if SLI2.
4701                  * cmpl_reg_vpi will set port_state to READY for SLI3.
4702                  */
4703                 if (phba->sli_rev < LPFC_SLI_REV4) {
4704                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
4705                                 lpfc_issue_reg_vpi(phba, vport);
4706                         else  { /* NPIV Not enabled */
4707                                 lpfc_issue_clear_la(phba, vport);
4708                                 vport->port_state = LPFC_VPORT_READY;
4709                         }
4710                 }
4711                 break;
4712
4713         case LPFC_VPORT_READY:
4714                 if (vport->fc_flag & FC_RSCN_MODE) {
4715                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4716                                          "0231 RSCN timeout Data: x%x "
4717                                          "x%x\n",
4718                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
4719
4720                         /* Cleanup any outstanding ELS commands */
4721                         lpfc_els_flush_cmd(vport);
4722
4723                         lpfc_els_flush_rscn(vport);
4724                         lpfc_disc_flush_list(vport);
4725                 }
4726                 break;
4727
4728         default:
4729                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4730                                  "0273 Unexpected discovery timeout, "
4731                                  "vport State x%x\n", vport->port_state);
4732                 break;
4733         }
4734
4735         switch (phba->link_state) {
4736         case LPFC_CLEAR_LA:
4737                                 /* CLEAR LA timeout */
4738                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4739                                  "0228 CLEAR LA timeout\n");
4740                 clrlaerr = 1;
4741                 break;
4742
4743         case LPFC_LINK_UP:
4744                 lpfc_issue_clear_la(phba, vport);
4745                 /* Drop thru */
4746         case LPFC_LINK_UNKNOWN:
4747         case LPFC_WARM_START:
4748         case LPFC_INIT_START:
4749         case LPFC_INIT_MBX_CMDS:
4750         case LPFC_LINK_DOWN:
4751         case LPFC_HBA_ERROR:
4752                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4753                                  "0230 Unexpected timeout, hba link "
4754                                  "state x%x\n", phba->link_state);
4755                 clrlaerr = 1;
4756                 break;
4757
4758         case LPFC_HBA_READY:
4759                 break;
4760         }
4761
4762         if (clrlaerr) {
4763                 lpfc_disc_flush_list(vport);
4764                 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
4765                 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
4766                 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
4767                 vport->port_state = LPFC_VPORT_READY;
4768         }
4769
4770         return;
4771 }
4772
4773 /*
4774  * This routine handles processing a NameServer REG_LOGIN mailbox
4775  * command upon completion. It is setup in the LPFC_MBOXQ
4776  * as the completion routine when the command is
4777  * handed off to the SLI layer.
4778  */
4779 void
4780 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4781 {
4782         MAILBOX_t *mb = &pmb->u.mb;
4783         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
4784         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
4785         struct lpfc_vport    *vport = pmb->vport;
4786
4787         pmb->context1 = NULL;
4788         pmb->context2 = NULL;
4789
4790         ndlp->nlp_rpi = mb->un.varWords[0];
4791         ndlp->nlp_flag |= NLP_RPI_VALID;
4792         ndlp->nlp_type |= NLP_FABRIC;
4793         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4794
4795         /*
4796          * Start issuing Fabric-Device Management Interface (FDMI) command to
4797          * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
4798          * fdmi-on=2 (supporting RPA/hostnmae)
4799          */
4800
4801         if (vport->cfg_fdmi_on == 1)
4802                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
4803         else
4804                 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
4805
4806         /* decrement the node reference count held for this callback
4807          * function.
4808          */
4809         lpfc_nlp_put(ndlp);
4810         lpfc_mbuf_free(phba, mp->virt, mp->phys);
4811         kfree(mp);
4812         mempool_free(pmb, phba->mbox_mem_pool);
4813
4814         return;
4815 }
4816
4817 static int
4818 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
4819 {
4820         uint16_t *rpi = param;
4821
4822         return ndlp->nlp_rpi == *rpi;
4823 }
4824
4825 static int
4826 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
4827 {
4828         return memcmp(&ndlp->nlp_portname, param,
4829                       sizeof(ndlp->nlp_portname)) == 0;
4830 }
4831
4832 static struct lpfc_nodelist *
4833 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
4834 {
4835         struct lpfc_nodelist *ndlp;
4836
4837         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4838                 if (filter(ndlp, param))
4839                         return ndlp;
4840         }
4841         return NULL;
4842 }
4843
4844 /*
4845  * This routine looks up the ndlp lists for the given RPI. If rpi found it
4846  * returns the node list element pointer else return NULL.
4847  */
4848 struct lpfc_nodelist *
4849 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
4850 {
4851         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
4852 }
4853
4854 /*
4855  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
4856  * returns the node element list pointer else return NULL.
4857  */
4858 struct lpfc_nodelist *
4859 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
4860 {
4861         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4862         struct lpfc_nodelist *ndlp;
4863
4864         spin_lock_irq(shost->host_lock);
4865         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
4866         spin_unlock_irq(shost->host_lock);
4867         return ndlp;
4868 }
4869
4870 void
4871 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4872               uint32_t did)
4873 {
4874         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
4875
4876         lpfc_initialize_node(vport, ndlp, did);
4877         INIT_LIST_HEAD(&ndlp->nlp_listp);
4878
4879         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4880                 "node init:       did:x%x",
4881                 ndlp->nlp_DID, 0, 0);
4882
4883         return;
4884 }
4885
4886 /* This routine releases all resources associated with a specifc NPort's ndlp
4887  * and mempool_free's the nodelist.
4888  */
4889 static void
4890 lpfc_nlp_release(struct kref *kref)
4891 {
4892         struct lpfc_hba *phba;
4893         unsigned long flags;
4894         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
4895                                                   kref);
4896
4897         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4898                 "node release:    did:x%x flg:x%x type:x%x",
4899                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4900
4901         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
4902                         "0279 lpfc_nlp_release: ndlp:x%p "
4903                         "usgmap:x%x refcnt:%d\n",
4904                         (void *)ndlp, ndlp->nlp_usg_map,
4905                         atomic_read(&ndlp->kref.refcount));
4906
4907         /* remove ndlp from action. */
4908         lpfc_nlp_remove(ndlp->vport, ndlp);
4909
4910         /* clear the ndlp active flag for all release cases */
4911         phba = ndlp->phba;
4912         spin_lock_irqsave(&phba->ndlp_lock, flags);
4913         NLP_CLR_NODE_ACT(ndlp);
4914         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4915
4916         /* free ndlp memory for final ndlp release */
4917         if (NLP_CHK_FREE_REQ(ndlp)) {
4918                 kfree(ndlp->lat_data);
4919                 mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
4920         }
4921 }
4922
4923 /* This routine bumps the reference count for a ndlp structure to ensure
4924  * that one discovery thread won't free a ndlp while another discovery thread
4925  * is using it.
4926  */
4927 struct lpfc_nodelist *
4928 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
4929 {
4930         struct lpfc_hba *phba;
4931         unsigned long flags;
4932
4933         if (ndlp) {
4934                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4935                         "node get:        did:x%x flg:x%x refcnt:x%x",
4936                         ndlp->nlp_DID, ndlp->nlp_flag,
4937                         atomic_read(&ndlp->kref.refcount));
4938                 /* The check of ndlp usage to prevent incrementing the
4939                  * ndlp reference count that is in the process of being
4940                  * released.
4941                  */
4942                 phba = ndlp->phba;
4943                 spin_lock_irqsave(&phba->ndlp_lock, flags);
4944                 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
4945                         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4946                         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
4947                                 "0276 lpfc_nlp_get: ndlp:x%p "
4948                                 "usgmap:x%x refcnt:%d\n",
4949                                 (void *)ndlp, ndlp->nlp_usg_map,
4950                                 atomic_read(&ndlp->kref.refcount));
4951                         return NULL;
4952                 } else
4953                         kref_get(&ndlp->kref);
4954                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4955         }
4956         return ndlp;
4957 }
4958
4959 /* This routine decrements the reference count for a ndlp structure. If the
4960  * count goes to 0, this indicates the the associated nodelist should be
4961  * freed. Returning 1 indicates the ndlp resource has been released; on the
4962  * other hand, returning 0 indicates the ndlp resource has not been released
4963  * yet.
4964  */
4965 int
4966 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
4967 {
4968         struct lpfc_hba *phba;
4969         unsigned long flags;
4970
4971         if (!ndlp)
4972                 return 1;
4973
4974         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4975         "node put:        did:x%x flg:x%x refcnt:x%x",
4976                 ndlp->nlp_DID, ndlp->nlp_flag,
4977                 atomic_read(&ndlp->kref.refcount));
4978         phba = ndlp->phba;
4979         spin_lock_irqsave(&phba->ndlp_lock, flags);
4980         /* Check the ndlp memory free acknowledge flag to avoid the
4981          * possible race condition that kref_put got invoked again
4982          * after previous one has done ndlp memory free.
4983          */
4984         if (NLP_CHK_FREE_ACK(ndlp)) {
4985                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4986                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
4987                                 "0274 lpfc_nlp_put: ndlp:x%p "
4988                                 "usgmap:x%x refcnt:%d\n",
4989                                 (void *)ndlp, ndlp->nlp_usg_map,
4990                                 atomic_read(&ndlp->kref.refcount));
4991                 return 1;
4992         }
4993         /* Check the ndlp inactivate log flag to avoid the possible
4994          * race condition that kref_put got invoked again after ndlp
4995          * is already in inactivating state.
4996          */
4997         if (NLP_CHK_IACT_REQ(ndlp)) {
4998                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4999                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
5000                                 "0275 lpfc_nlp_put: ndlp:x%p "
5001                                 "usgmap:x%x refcnt:%d\n",
5002                                 (void *)ndlp, ndlp->nlp_usg_map,
5003                                 atomic_read(&ndlp->kref.refcount));
5004                 return 1;
5005         }
5006         /* For last put, mark the ndlp usage flags to make sure no
5007          * other kref_get and kref_put on the same ndlp shall get
5008          * in between the process when the final kref_put has been
5009          * invoked on this ndlp.
5010          */
5011         if (atomic_read(&ndlp->kref.refcount) == 1) {
5012                 /* Indicate ndlp is put to inactive state. */
5013                 NLP_SET_IACT_REQ(ndlp);
5014                 /* Acknowledge ndlp memory free has been seen. */
5015                 if (NLP_CHK_FREE_REQ(ndlp))
5016                         NLP_SET_FREE_ACK(ndlp);
5017         }
5018         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5019         /* Note, the kref_put returns 1 when decrementing a reference
5020          * count that was 1, it invokes the release callback function,
5021          * but it still left the reference count as 1 (not actually
5022          * performs the last decrementation). Otherwise, it actually
5023          * decrements the reference count and returns 0.
5024          */
5025         return kref_put(&ndlp->kref, lpfc_nlp_release);
5026 }
5027
5028 /* This routine free's the specified nodelist if it is not in use
5029  * by any other discovery thread. This routine returns 1 if the
5030  * ndlp has been freed. A return value of 0 indicates the ndlp is
5031  * not yet been released.
5032  */
5033 int
5034 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
5035 {
5036         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5037                 "node not used:   did:x%x flg:x%x refcnt:x%x",
5038                 ndlp->nlp_DID, ndlp->nlp_flag,
5039                 atomic_read(&ndlp->kref.refcount));
5040         if (atomic_read(&ndlp->kref.refcount) == 1)
5041                 if (lpfc_nlp_put(ndlp))
5042                         return 1;
5043         return 0;
5044 }
5045
5046 /**
5047  * lpfc_fcf_inuse - Check if FCF can be unregistered.
5048  * @phba: Pointer to hba context object.
5049  *
5050  * This function iterate through all FC nodes associated
5051  * will all vports to check if there is any node with
5052  * fc_rports associated with it. If there is an fc_rport
5053  * associated with the node, then the node is either in
5054  * discovered state or its devloss_timer is pending.
5055  */
5056 static int
5057 lpfc_fcf_inuse(struct lpfc_hba *phba)
5058 {
5059         struct lpfc_vport **vports;
5060         int i, ret = 0;
5061         struct lpfc_nodelist *ndlp;
5062         struct Scsi_Host  *shost;
5063
5064         vports = lpfc_create_vport_work_array(phba);
5065
5066         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5067                 shost = lpfc_shost_from_vport(vports[i]);
5068                 spin_lock_irq(shost->host_lock);
5069                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
5070                         if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport &&
5071                           (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
5072                                 ret = 1;
5073                                 spin_unlock_irq(shost->host_lock);
5074                                 goto out;
5075                         } else {
5076                                 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
5077                                         "2624 RPI %x DID %x flg %x still "
5078                                         "logged in\n",
5079                                         ndlp->nlp_rpi, ndlp->nlp_DID,
5080                                         ndlp->nlp_flag);
5081                                 if (ndlp->nlp_flag & NLP_RPI_VALID)
5082                                         ret = 1;
5083                         }
5084                 }
5085                 spin_unlock_irq(shost->host_lock);
5086         }
5087 out:
5088         lpfc_destroy_vport_work_array(phba, vports);
5089         return ret;
5090 }
5091
5092 /**
5093  * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
5094  * @phba: Pointer to hba context object.
5095  * @mboxq: Pointer to mailbox object.
5096  *
5097  * This function frees memory associated with the mailbox command.
5098  */
5099 static void
5100 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
5101 {
5102         struct lpfc_vport *vport = mboxq->vport;
5103         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5104
5105         if (mboxq->u.mb.mbxStatus) {
5106                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5107                         "2555 UNREG_VFI mbxStatus error x%x "
5108                         "HBA state x%x\n",
5109                         mboxq->u.mb.mbxStatus, vport->port_state);
5110         }
5111         spin_lock_irq(shost->host_lock);
5112         phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
5113         spin_unlock_irq(shost->host_lock);
5114         mempool_free(mboxq, phba->mbox_mem_pool);
5115         return;
5116 }
5117
5118 /**
5119  * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
5120  * @phba: Pointer to hba context object.
5121  * @mboxq: Pointer to mailbox object.
5122  *
5123  * This function frees memory associated with the mailbox command.
5124  */
5125 static void
5126 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
5127 {
5128         struct lpfc_vport *vport = mboxq->vport;
5129
5130         if (mboxq->u.mb.mbxStatus) {
5131                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5132                         "2550 UNREG_FCFI mbxStatus error x%x "
5133                         "HBA state x%x\n",
5134                         mboxq->u.mb.mbxStatus, vport->port_state);
5135         }
5136         mempool_free(mboxq, phba->mbox_mem_pool);
5137         return;
5138 }
5139
5140 /**
5141  * lpfc_unregister_fcf_prep - Unregister fcf record preparation
5142  * @phba: Pointer to hba context object.
5143  *
5144  * This function prepare the HBA for unregistering the currently registered
5145  * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
5146  * VFIs.
5147  */
5148 int
5149 lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
5150 {
5151         LPFC_MBOXQ_t *mbox;
5152         struct lpfc_vport **vports;
5153         struct lpfc_nodelist *ndlp;
5154         struct Scsi_Host *shost;
5155         int i, rc;
5156
5157         /* Unregister RPIs */
5158         if (lpfc_fcf_inuse(phba))
5159                 lpfc_unreg_hba_rpis(phba);
5160
5161         /* At this point, all discovery is aborted */
5162         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
5163
5164         /* Unregister VPIs */
5165         vports = lpfc_create_vport_work_array(phba);
5166         if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
5167                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5168                         /* Stop FLOGI/FDISC retries */
5169                         ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
5170                         if (ndlp)
5171                                 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
5172                         lpfc_cleanup_pending_mbox(vports[i]);
5173                         lpfc_mbx_unreg_vpi(vports[i]);
5174                         shost = lpfc_shost_from_vport(vports[i]);
5175                         spin_lock_irq(shost->host_lock);
5176                         vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
5177                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
5178                         spin_unlock_irq(shost->host_lock);
5179                 }
5180         lpfc_destroy_vport_work_array(phba, vports);
5181
5182         /* Cleanup any outstanding ELS commands */
5183         lpfc_els_flush_all_cmd(phba);
5184
5185         /* Unregister VFI */
5186         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5187         if (!mbox) {
5188                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5189                                 "2556 UNREG_VFI mbox allocation failed"
5190                                 "HBA state x%x\n", phba->pport->port_state);
5191                 return -ENOMEM;
5192         }
5193
5194         lpfc_unreg_vfi(mbox, phba->pport);
5195         mbox->vport = phba->pport;
5196         mbox->mbox_cmpl = lpfc_unregister_vfi_cmpl;
5197
5198         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5199         if (rc == MBX_NOT_FINISHED) {
5200                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5201                                 "2557 UNREG_VFI issue mbox failed rc x%x "
5202                                 "HBA state x%x\n",
5203                                 rc, phba->pport->port_state);
5204                 mempool_free(mbox, phba->mbox_mem_pool);
5205                 return -EIO;
5206         }
5207
5208         shost = lpfc_shost_from_vport(phba->pport);
5209         spin_lock_irq(shost->host_lock);
5210         phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
5211         spin_unlock_irq(shost->host_lock);
5212
5213         return 0;
5214 }
5215
5216 /**
5217  * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
5218  * @phba: Pointer to hba context object.
5219  *
5220  * This function issues synchronous unregister FCF mailbox command to HBA to
5221  * unregister the currently registered FCF record. The driver does not reset
5222  * the driver FCF usage state flags.
5223  *
5224  * Return 0 if successfully issued, none-zero otherwise.
5225  */
5226 int
5227 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
5228 {
5229         LPFC_MBOXQ_t *mbox;
5230         int rc;
5231
5232         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5233         if (!mbox) {
5234                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5235                                 "2551 UNREG_FCFI mbox allocation failed"
5236                                 "HBA state x%x\n", phba->pport->port_state);
5237                 return -ENOMEM;
5238         }
5239         lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
5240         mbox->vport = phba->pport;
5241         mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
5242         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5243
5244         if (rc == MBX_NOT_FINISHED) {
5245                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5246                                 "2552 Unregister FCFI command failed rc x%x "
5247                                 "HBA state x%x\n",
5248                                 rc, phba->pport->port_state);
5249                 return -EINVAL;
5250         }
5251         return 0;
5252 }
5253
5254 /**
5255  * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
5256  * @phba: Pointer to hba context object.
5257  *
5258  * This function unregisters the currently reigstered FCF. This function
5259  * also tries to find another FCF for discovery by rescan the HBA FCF table.
5260  */
5261 void
5262 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
5263 {
5264         int rc;
5265
5266         /* Preparation for unregistering fcf */
5267         rc = lpfc_unregister_fcf_prep(phba);
5268         if (rc) {
5269                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
5270                                 "2748 Failed to prepare for unregistering "
5271                                 "HBA's FCF record: rc=%d\n", rc);
5272                 return;
5273         }
5274
5275         /* Now, unregister FCF record and reset HBA FCF state */
5276         rc = lpfc_sli4_unregister_fcf(phba);
5277         if (rc)
5278                 return;
5279         /* Reset HBA FCF states after successful unregister FCF */
5280         phba->fcf.fcf_flag = 0;
5281         phba->fcf.current_rec.flag = 0;
5282
5283         /*
5284          * If driver is not unloading, check if there is any other
5285          * FCF record that can be used for discovery.
5286          */
5287         if ((phba->pport->load_flag & FC_UNLOADING) ||
5288             (phba->link_state < LPFC_LINK_UP))
5289                 return;
5290
5291         /* This is considered as the initial FCF discovery scan */
5292         spin_lock_irq(&phba->hbalock);
5293         phba->fcf.fcf_flag |= FCF_INIT_DISC;
5294         spin_unlock_irq(&phba->hbalock);
5295
5296         /* Reset FCF roundrobin bmask for new discovery */
5297         memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask));
5298
5299         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
5300
5301         if (rc) {
5302                 spin_lock_irq(&phba->hbalock);
5303                 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
5304                 spin_unlock_irq(&phba->hbalock);
5305                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5306                                 "2553 lpfc_unregister_unused_fcf failed "
5307                                 "to read FCF record HBA state x%x\n",
5308                                 phba->pport->port_state);
5309         }
5310 }
5311
5312 /**
5313  * lpfc_unregister_fcf - Unregister the currently registered fcf record
5314  * @phba: Pointer to hba context object.
5315  *
5316  * This function just unregisters the currently reigstered FCF. It does not
5317  * try to find another FCF for discovery.
5318  */
5319 void
5320 lpfc_unregister_fcf(struct lpfc_hba *phba)
5321 {
5322         int rc;
5323
5324         /* Preparation for unregistering fcf */
5325         rc = lpfc_unregister_fcf_prep(phba);
5326         if (rc) {
5327                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
5328                                 "2749 Failed to prepare for unregistering "
5329                                 "HBA's FCF record: rc=%d\n", rc);
5330                 return;
5331         }
5332
5333         /* Now, unregister FCF record and reset HBA FCF state */
5334         rc = lpfc_sli4_unregister_fcf(phba);
5335         if (rc)
5336                 return;
5337         /* Set proper HBA FCF states after successful unregister FCF */
5338         spin_lock_irq(&phba->hbalock);
5339         phba->fcf.fcf_flag &= ~FCF_REGISTERED;
5340         spin_unlock_irq(&phba->hbalock);
5341 }
5342
5343 /**
5344  * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
5345  * @phba: Pointer to hba context object.
5346  *
5347  * This function check if there are any connected remote port for the FCF and
5348  * if all the devices are disconnected, this function unregister FCFI.
5349  * This function also tries to use another FCF for discovery.
5350  */
5351 void
5352 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
5353 {
5354         /*
5355          * If HBA is not running in FIP mode, if HBA does not support
5356          * FCoE, if FCF discovery is ongoing, or if FCF has not been
5357          * registered, do nothing.
5358          */
5359         spin_lock_irq(&phba->hbalock);
5360         if (!(phba->hba_flag & HBA_FCOE_SUPPORT) ||
5361             !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
5362             !(phba->hba_flag & HBA_FIP_SUPPORT) ||
5363             (phba->fcf.fcf_flag & FCF_DISCOVERY) ||
5364             (phba->pport->port_state == LPFC_FLOGI)) {
5365                 spin_unlock_irq(&phba->hbalock);
5366                 return;
5367         }
5368         spin_unlock_irq(&phba->hbalock);
5369
5370         if (lpfc_fcf_inuse(phba))
5371                 return;
5372
5373         lpfc_unregister_fcf_rescan(phba);
5374 }
5375
5376 /**
5377  * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
5378  * @phba: Pointer to hba context object.
5379  * @buff: Buffer containing the FCF connection table as in the config
5380  *         region.
5381  * This function create driver data structure for the FCF connection
5382  * record table read from config region 23.
5383  */
5384 static void
5385 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
5386         uint8_t *buff)
5387 {
5388         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
5389         struct lpfc_fcf_conn_hdr *conn_hdr;
5390         struct lpfc_fcf_conn_rec *conn_rec;
5391         uint32_t record_count;
5392         int i;
5393
5394         /* Free the current connect table */
5395         list_for_each_entry_safe(conn_entry, next_conn_entry,
5396                 &phba->fcf_conn_rec_list, list) {
5397                 list_del_init(&conn_entry->list);
5398                 kfree(conn_entry);
5399         }
5400
5401         conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
5402         record_count = conn_hdr->length * sizeof(uint32_t)/
5403                 sizeof(struct lpfc_fcf_conn_rec);
5404
5405         conn_rec = (struct lpfc_fcf_conn_rec *)
5406                 (buff + sizeof(struct lpfc_fcf_conn_hdr));
5407
5408         for (i = 0; i < record_count; i++) {
5409                 if (!(conn_rec[i].flags & FCFCNCT_VALID))
5410                         continue;
5411                 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
5412                         GFP_KERNEL);
5413                 if (!conn_entry) {
5414                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5415                                 "2566 Failed to allocate connection"
5416                                 " table entry\n");
5417                         return;
5418                 }
5419
5420                 memcpy(&conn_entry->conn_rec, &conn_rec[i],
5421                         sizeof(struct lpfc_fcf_conn_rec));
5422                 conn_entry->conn_rec.vlan_tag =
5423                         le16_to_cpu(conn_entry->conn_rec.vlan_tag) & 0xFFF;
5424                 conn_entry->conn_rec.flags =
5425                         le16_to_cpu(conn_entry->conn_rec.flags);
5426                 list_add_tail(&conn_entry->list,
5427                         &phba->fcf_conn_rec_list);
5428         }
5429 }
5430
5431 /**
5432  * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
5433  * @phba: Pointer to hba context object.
5434  * @buff: Buffer containing the FCoE parameter data structure.
5435  *
5436  *  This function update driver data structure with config
5437  *  parameters read from config region 23.
5438  */
5439 static void
5440 lpfc_read_fcoe_param(struct lpfc_hba *phba,
5441                         uint8_t *buff)
5442 {
5443         struct lpfc_fip_param_hdr *fcoe_param_hdr;
5444         struct lpfc_fcoe_params *fcoe_param;
5445
5446         fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
5447                 buff;
5448         fcoe_param = (struct lpfc_fcoe_params *)
5449                 (buff + sizeof(struct lpfc_fip_param_hdr));
5450
5451         if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
5452                 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
5453                 return;
5454
5455         if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
5456                 phba->valid_vlan = 1;
5457                 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
5458                         0xFFF;
5459         }
5460
5461         phba->fc_map[0] = fcoe_param->fc_map[0];
5462         phba->fc_map[1] = fcoe_param->fc_map[1];
5463         phba->fc_map[2] = fcoe_param->fc_map[2];
5464         return;
5465 }
5466
5467 /**
5468  * lpfc_get_rec_conf23 - Get a record type in config region data.
5469  * @buff: Buffer containing config region 23 data.
5470  * @size: Size of the data buffer.
5471  * @rec_type: Record type to be searched.
5472  *
5473  * This function searches config region data to find the begining
5474  * of the record specified by record_type. If record found, this
5475  * function return pointer to the record else return NULL.
5476  */
5477 static uint8_t *
5478 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
5479 {
5480         uint32_t offset = 0, rec_length;
5481
5482         if ((buff[0] == LPFC_REGION23_LAST_REC) ||
5483                 (size < sizeof(uint32_t)))
5484                 return NULL;
5485
5486         rec_length = buff[offset + 1];
5487
5488         /*
5489          * One TLV record has one word header and number of data words
5490          * specified in the rec_length field of the record header.
5491          */
5492         while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
5493                 <= size) {
5494                 if (buff[offset] == rec_type)
5495                         return &buff[offset];
5496
5497                 if (buff[offset] == LPFC_REGION23_LAST_REC)
5498                         return NULL;
5499
5500                 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
5501                 rec_length = buff[offset + 1];
5502         }
5503         return NULL;
5504 }
5505
5506 /**
5507  * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
5508  * @phba: Pointer to lpfc_hba data structure.
5509  * @buff: Buffer containing config region 23 data.
5510  * @size: Size of the data buffer.
5511  *
5512  * This function parses the FCoE config parameters in config region 23 and
5513  * populate driver data structure with the parameters.
5514  */
5515 void
5516 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
5517                 uint8_t *buff,
5518                 uint32_t size)
5519 {
5520         uint32_t offset = 0, rec_length;
5521         uint8_t *rec_ptr;
5522
5523         /*
5524          * If data size is less than 2 words signature and version cannot be
5525          * verified.
5526          */
5527         if (size < 2*sizeof(uint32_t))
5528                 return;
5529
5530         /* Check the region signature first */
5531         if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
5532                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5533                         "2567 Config region 23 has bad signature\n");
5534                 return;
5535         }
5536
5537         offset += 4;
5538
5539         /* Check the data structure version */
5540         if (buff[offset] != LPFC_REGION23_VERSION) {
5541                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5542                         "2568 Config region 23 has bad version\n");
5543                 return;
5544         }
5545         offset += 4;
5546
5547         rec_length = buff[offset + 1];
5548
5549         /* Read FCoE param record */
5550         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
5551                         size - offset, FCOE_PARAM_TYPE);
5552         if (rec_ptr)
5553                 lpfc_read_fcoe_param(phba, rec_ptr);
5554
5555         /* Read FCF connection table */
5556         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
5557                 size - offset, FCOE_CONN_TBL_TYPE);
5558         if (rec_ptr)
5559                 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
5560
5561 }