Pileus Git - ~andy/linux/blob - 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 (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         unsigned long flags;
1019
1020         if (mboxq->u.mb.mbxStatus) {
1021                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1022                          "2017 REG_FCFI mbxStatus error x%x "
1023                          "HBA state x%x\n",
1024                          mboxq->u.mb.mbxStatus, vport->port_state);
1025                 mempool_free(mboxq, phba->mbox_mem_pool);
1026                 return;
1027         }
1028
1029         /* Start FCoE discovery by sending a FLOGI. */
1030         phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1031         /* Set the FCFI registered flag */
1032         spin_lock_irqsave(&phba->hbalock, flags);
1033         phba->fcf.fcf_flag |= FCF_REGISTERED;
1034         spin_unlock_irqrestore(&phba->hbalock, flags);
1035         /* If there is a pending FCoE event, restart FCF table scan. */
1036         if (lpfc_check_pending_fcoe_event(phba, 1)) {
1037                 mempool_free(mboxq, phba->mbox_mem_pool);
1038                 return;
1039         }
1040         spin_lock_irqsave(&phba->hbalock, flags);
1041         phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1042         phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1043         spin_unlock_irqrestore(&phba->hbalock, flags);
1044         if (vport->port_state != LPFC_FLOGI)
1045                 lpfc_initial_flogi(vport);
1046
1047         mempool_free(mboxq, phba->mbox_mem_pool);
1048         return;
1049 }
1050
1051 /**
1052  * lpfc_fab_name_match - Check if the fcf fabric name match.
1053  * @fab_name: pointer to fabric name.
1054  * @new_fcf_record: pointer to fcf record.
1055  *
1056  * This routine compare the fcf record's fabric name with provided
1057  * fabric name. If the fabric name are identical this function
1058  * returns 1 else return 0.
1059  **/
1060 static uint32_t
1061 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1062 {
1063         if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1064                 return 0;
1065         if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1066                 return 0;
1067         if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1068                 return 0;
1069         if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1070                 return 0;
1071         if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1072                 return 0;
1073         if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1074                 return 0;
1075         if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1076                 return 0;
1077         if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1078                 return 0;
1079         return 1;
1080 }
1081
1082 /**
1083  * lpfc_sw_name_match - Check if the fcf switch name match.
1084  * @fab_name: pointer to fabric name.
1085  * @new_fcf_record: pointer to fcf record.
1086  *
1087  * This routine compare the fcf record's switch name with provided
1088  * switch name. If the switch name are identical this function
1089  * returns 1 else return 0.
1090  **/
1091 static uint32_t
1092 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1093 {
1094         if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1095                 return 0;
1096         if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1097                 return 0;
1098         if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1099                 return 0;
1100         if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1101                 return 0;
1102         if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1103                 return 0;
1104         if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1105                 return 0;
1106         if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1107                 return 0;
1108         if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1109                 return 0;
1110         return 1;
1111 }
1112
1113 /**
1114  * lpfc_mac_addr_match - Check if the fcf mac address match.
1115  * @mac_addr: pointer to mac address.
1116  * @new_fcf_record: pointer to fcf record.
1117  *
1118  * This routine compare the fcf record's mac address with HBA's
1119  * FCF mac address. If the mac addresses are identical this function
1120  * returns 1 else return 0.
1121  **/
1122 static uint32_t
1123 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1124 {
1125         if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1126                 return 0;
1127         if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1128                 return 0;
1129         if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1130                 return 0;
1131         if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1132                 return 0;
1133         if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1134                 return 0;
1135         if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1136                 return 0;
1137         return 1;
1138 }
1139
1140 static bool
1141 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1142 {
1143         return (curr_vlan_id == new_vlan_id);
1144 }
1145
1146 /**
1147  * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1148  * @fcf: pointer to driver fcf record.
1149  * @new_fcf_record: pointer to fcf record.
1150  *
1151  * This routine copies the FCF information from the FCF
1152  * record to lpfc_hba data structure.
1153  **/
1154 static void
1155 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1156                      struct fcf_record *new_fcf_record)
1157 {
1158         /* Fabric name */
1159         fcf_rec->fabric_name[0] =
1160                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1161         fcf_rec->fabric_name[1] =
1162                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1163         fcf_rec->fabric_name[2] =
1164                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1165         fcf_rec->fabric_name[3] =
1166                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1167         fcf_rec->fabric_name[4] =
1168                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1169         fcf_rec->fabric_name[5] =
1170                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1171         fcf_rec->fabric_name[6] =
1172                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1173         fcf_rec->fabric_name[7] =
1174                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1175         /* Mac address */
1176         fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1177         fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1178         fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1179         fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1180         fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1181         fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1182         /* FCF record index */
1183         fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1184         /* FCF record priority */
1185         fcf_rec->priority = new_fcf_record->fip_priority;
1186         /* Switch name */
1187         fcf_rec->switch_name[0] =
1188                 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1189         fcf_rec->switch_name[1] =
1190                 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1191         fcf_rec->switch_name[2] =
1192                 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1193         fcf_rec->switch_name[3] =
1194                 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1195         fcf_rec->switch_name[4] =
1196                 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1197         fcf_rec->switch_name[5] =
1198                 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1199         fcf_rec->switch_name[6] =
1200                 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1201         fcf_rec->switch_name[7] =
1202                 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1203 }
1204
1205 /**
1206  * lpfc_update_fcf_record - Update driver fcf record
1207  * @phba: pointer to lpfc hba data structure.
1208  * @fcf_rec: pointer to driver fcf record.
1209  * @new_fcf_record: pointer to hba fcf record.
1210  * @addr_mode: address mode to be set to the driver fcf record.
1211  * @vlan_id: vlan tag to be set to the driver fcf record.
1212  * @flag: flag bits to be set to the driver fcf record.
1213  *
1214  * This routine updates the driver FCF record from the new HBA FCF record
1215  * together with the address mode, vlan_id, and other informations. This
1216  * routine is called with the host lock held.
1217  **/
1218 static void
1219 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1220                        struct fcf_record *new_fcf_record, uint32_t addr_mode,
1221                        uint16_t vlan_id, uint32_t flag)
1222 {
1223         /* Copy the fields from the HBA's FCF record */
1224         lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1225         /* Update other fields of driver FCF record */
1226         fcf_rec->addr_mode = addr_mode;
1227         fcf_rec->vlan_id = vlan_id;
1228         fcf_rec->flag |= (flag | RECORD_VALID);
1229 }
1230
1231 /**
1232  * lpfc_register_fcf - Register the FCF with hba.
1233  * @phba: pointer to lpfc hba data structure.
1234  *
1235  * This routine issues a register fcfi mailbox command to register
1236  * the fcf with HBA.
1237  **/
1238 static void
1239 lpfc_register_fcf(struct lpfc_hba *phba)
1240 {
1241         LPFC_MBOXQ_t *fcf_mbxq;
1242         int rc;
1243         unsigned long flags;
1244
1245         spin_lock_irqsave(&phba->hbalock, flags);
1246
1247         /* If the FCF is not availabe do nothing. */
1248         if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1249                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1250                 spin_unlock_irqrestore(&phba->hbalock, flags);
1251                 return;
1252         }
1253
1254         /* The FCF is already registered, start discovery */
1255         if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1256                 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1257                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1258                 spin_unlock_irqrestore(&phba->hbalock, flags);
1259                 if (phba->pport->port_state != LPFC_FLOGI)
1260                         lpfc_initial_flogi(phba->pport);
1261                 return;
1262         }
1263         spin_unlock_irqrestore(&phba->hbalock, flags);
1264
1265         fcf_mbxq = mempool_alloc(phba->mbox_mem_pool,
1266                 GFP_KERNEL);
1267         if (!fcf_mbxq) {
1268                 spin_lock_irqsave(&phba->hbalock, flags);
1269                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1270                 spin_unlock_irqrestore(&phba->hbalock, flags);
1271                 return;
1272         }
1273
1274         lpfc_reg_fcfi(phba, fcf_mbxq);
1275         fcf_mbxq->vport = phba->pport;
1276         fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1277         rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1278         if (rc == MBX_NOT_FINISHED) {
1279                 spin_lock_irqsave(&phba->hbalock, flags);
1280                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1281                 spin_unlock_irqrestore(&phba->hbalock, flags);
1282                 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1283         }
1284
1285         return;
1286 }
1287
1288 /**
1289  * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1290  * @phba: pointer to lpfc hba data structure.
1291  * @new_fcf_record: pointer to fcf record.
1292  * @boot_flag: Indicates if this record used by boot bios.
1293  * @addr_mode: The address mode to be used by this FCF
1294  * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1295  *
1296  * This routine compare the fcf record with connect list obtained from the
1297  * config region to decide if this FCF can be used for SAN discovery. It returns
1298  * 1 if this record can be used for SAN discovery else return zero. If this FCF
1299  * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1300  * is used by boot bios and addr_mode will indicate the addressing mode to be
1301  * used for this FCF when the function returns.
1302  * If the FCF record need to be used with a particular vlan id, the vlan is
1303  * set in the vlan_id on return of the function. If not VLAN tagging need to
1304  * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
1305  **/
1306 static int
1307 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1308                         struct fcf_record *new_fcf_record,
1309                         uint32_t *boot_flag, uint32_t *addr_mode,
1310                         uint16_t *vlan_id)
1311 {
1312         struct lpfc_fcf_conn_entry *conn_entry;
1313         int i, j, fcf_vlan_id = 0;
1314
1315         /* Find the lowest VLAN id in the FCF record */
1316         for (i = 0; i < 512; i++) {
1317                 if (new_fcf_record->vlan_bitmap[i]) {
1318                         fcf_vlan_id = i * 8;
1319                         j = 0;
1320                         while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1321                                 j++;
1322                                 fcf_vlan_id++;
1323                         }
1324                         break;
1325                 }
1326         }
1327
1328         /* If FCF not available return 0 */
1329         if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1330                 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record))
1331                 return 0;
1332
1333         if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1334                 *boot_flag = 0;
1335                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1336                                 new_fcf_record);
1337                 if (phba->valid_vlan)
1338                         *vlan_id = phba->vlan_id;
1339                 else
1340                         *vlan_id = LPFC_FCOE_NULL_VID;
1341                 return 1;
1342         }
1343
1344         /*
1345          * If there are no FCF connection table entry, driver connect to all
1346          * FCFs.
1347          */
1348         if (list_empty(&phba->fcf_conn_rec_list)) {
1349                 *boot_flag = 0;
1350                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1351                         new_fcf_record);
1352
1353                 /*
1354                  * When there are no FCF connect entries, use driver's default
1355                  * addressing mode - FPMA.
1356                  */
1357                 if (*addr_mode & LPFC_FCF_FPMA)
1358                         *addr_mode = LPFC_FCF_FPMA;
1359
1360                 /* If FCF record report a vlan id use that vlan id */
1361                 if (fcf_vlan_id)
1362                         *vlan_id = fcf_vlan_id;
1363                 else
1364                         *vlan_id = LPFC_FCOE_NULL_VID;
1365                 return 1;
1366         }
1367
1368         list_for_each_entry(conn_entry,
1369                             &phba->fcf_conn_rec_list, list) {
1370                 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1371                         continue;
1372
1373                 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1374                         !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1375                                              new_fcf_record))
1376                         continue;
1377                 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
1378                         !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
1379                                             new_fcf_record))
1380                         continue;
1381                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1382                         /*
1383                          * If the vlan bit map does not have the bit set for the
1384                          * vlan id to be used, then it is not a match.
1385                          */
1386                         if (!(new_fcf_record->vlan_bitmap
1387                                 [conn_entry->conn_rec.vlan_tag / 8] &
1388                                 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
1389                                 continue;
1390                 }
1391
1392                 /*
1393                  * If connection record does not support any addressing mode,
1394                  * skip the FCF record.
1395                  */
1396                 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
1397                         & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
1398                         continue;
1399
1400                 /*
1401                  * Check if the connection record specifies a required
1402                  * addressing mode.
1403                  */
1404                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1405                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
1406
1407                         /*
1408                          * If SPMA required but FCF not support this continue.
1409                          */
1410                         if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1411                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1412                                         new_fcf_record) & LPFC_FCF_SPMA))
1413                                 continue;
1414
1415                         /*
1416                          * If FPMA required but FCF not support this continue.
1417                          */
1418                         if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1419                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1420                                 new_fcf_record) & LPFC_FCF_FPMA))
1421                                 continue;
1422                 }
1423
1424                 /*
1425                  * This fcf record matches filtering criteria.
1426                  */
1427                 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
1428                         *boot_flag = 1;
1429                 else
1430                         *boot_flag = 0;
1431
1432                 /*
1433                  * If user did not specify any addressing mode, or if the
1434                  * prefered addressing mode specified by user is not supported
1435                  * by FCF, allow fabric to pick the addressing mode.
1436                  */
1437                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1438                                 new_fcf_record);
1439                 /*
1440                  * If the user specified a required address mode, assign that
1441                  * address mode
1442                  */
1443                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1444                         (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
1445                         *addr_mode = (conn_entry->conn_rec.flags &
1446                                 FCFCNCT_AM_SPMA) ?
1447                                 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
1448                 /*
1449                  * If the user specified a prefered address mode, use the
1450                  * addr mode only if FCF support the addr_mode.
1451                  */
1452                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1453                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1454                         (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1455                         (*addr_mode & LPFC_FCF_SPMA))
1456                                 *addr_mode = LPFC_FCF_SPMA;
1457                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1458                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1459                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1460                         (*addr_mode & LPFC_FCF_FPMA))
1461                                 *addr_mode = LPFC_FCF_FPMA;
1462
1463                 /* If matching connect list has a vlan id, use it */
1464                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
1465                         *vlan_id = conn_entry->conn_rec.vlan_tag;
1466                 /*
1467                  * If no vlan id is specified in connect list, use the vlan id
1468                  * in the FCF record
1469                  */
1470                 else if (fcf_vlan_id)
1471                         *vlan_id = fcf_vlan_id;
1472                 else
1473                         *vlan_id = LPFC_FCOE_NULL_VID;
1474
1475                 return 1;
1476         }
1477
1478         return 0;
1479 }
1480
1481 /**
1482  * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
1483  * @phba: pointer to lpfc hba data structure.
1484  * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
1485  *
1486  * This function check if there is any fcoe event pending while driver
1487  * scan FCF entries. If there is any pending event, it will restart the
1488  * FCF saning and return 1 else return 0.
1489  */
1490 int
1491 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
1492 {
1493         /*
1494          * If the Link is up and no FCoE events while in the
1495          * FCF discovery, no need to restart FCF discovery.
1496          */
1497         if ((phba->link_state  >= LPFC_LINK_UP) &&
1498                 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
1499                 return 0;
1500
1501         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1502                         "2768 Pending link or FCF event during current "
1503                         "handling of the previous event: link_state:x%x, "
1504                         "evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
1505                         phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
1506                         phba->fcoe_eventtag);
1507
1508         spin_lock_irq(&phba->hbalock);
1509         phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
1510         spin_unlock_irq(&phba->hbalock);
1511
1512         if (phba->link_state >= LPFC_LINK_UP) {
1513                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1514                                 "2780 Restart FCF table scan due to "
1515                                 "pending FCF event:evt_tag_at_scan:x%x, "
1516                                 "evt_tag_current:x%x\n",
1517                                 phba->fcoe_eventtag_at_fcf_scan,
1518                                 phba->fcoe_eventtag);
1519                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
1520         } else {
1521                 /*
1522                  * Do not continue FCF discovery and clear FCF_DISC_INPROGRESS
1523                  * flag
1524                  */
1525                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1526                                 "2833 Stop FCF discovery process due to link "
1527                                 "state change (x%x)\n", phba->link_state);
1528                 spin_lock_irq(&phba->hbalock);
1529                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1530                 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
1531                 spin_unlock_irq(&phba->hbalock);
1532         }
1533
1534         /* Unregister the currently registered FCF if required */
1535         if (unreg_fcf) {
1536                 spin_lock_irq(&phba->hbalock);
1537                 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
1538                 spin_unlock_irq(&phba->hbalock);
1539                 lpfc_sli4_unregister_fcf(phba);
1540         }
1541         return 1;
1542 }
1543
1544 /**
1545  * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
1546  * @phba: pointer to lpfc hba data structure.
1547  * @fcf_cnt: number of eligible fcf record seen so far.
1548  *
1549  * This function makes an running random selection decision on FCF record to
1550  * use through a sequence of @fcf_cnt eligible FCF records with equal
1551  * probability. To perform integer manunipulation of random numbers with
1552  * size unit32_t, the lower 16 bits of the 32-bit random number returned
1553  * from random32() are taken as the random random number generated.
1554  *
1555  * Returns true when outcome is for the newly read FCF record should be
1556  * chosen; otherwise, return false when outcome is for keeping the previously
1557  * chosen FCF record.
1558  **/
1559 static bool
1560 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
1561 {
1562         uint32_t rand_num;
1563
1564         /* Get 16-bit uniform random number */
1565         rand_num = (0xFFFF & random32());
1566
1567         /* Decision with probability 1/fcf_cnt */
1568         if ((fcf_cnt * rand_num) < 0xFFFF)
1569                 return true;
1570         else
1571                 return false;
1572 }
1573
1574 /**
1575  * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
1576  * @phba: pointer to lpfc hba data structure.
1577  * @mboxq: pointer to mailbox object.
1578  * @next_fcf_index: pointer to holder of next fcf index.
1579  *
1580  * This routine parses the non-embedded fcf mailbox command by performing the
1581  * necessarily error checking, non-embedded read FCF record mailbox command
1582  * SGE parsing, and endianness swapping.
1583  *
1584  * Returns the pointer to the new FCF record in the non-embedded mailbox
1585  * command DMA memory if successfully, other NULL.
1586  */
1587 static struct fcf_record *
1588 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
1589                              uint16_t *next_fcf_index)
1590 {
1591         void *virt_addr;
1592         dma_addr_t phys_addr;
1593         struct lpfc_mbx_sge sge;
1594         struct lpfc_mbx_read_fcf_tbl *read_fcf;
1595         uint32_t shdr_status, shdr_add_status;
1596         union lpfc_sli4_cfg_shdr *shdr;
1597         struct fcf_record *new_fcf_record;
1598
1599         /* Get the first SGE entry from the non-embedded DMA memory. This
1600          * routine only uses a single SGE.
1601          */
1602         lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
1603         phys_addr = getPaddr(sge.pa_hi, sge.pa_lo);
1604         if (unlikely(!mboxq->sge_array)) {
1605                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1606                                 "2524 Failed to get the non-embedded SGE "
1607                                 "virtual address\n");
1608                 return NULL;
1609         }
1610         virt_addr = mboxq->sge_array->addr[0];
1611
1612         shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
1613         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
1614         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
1615         if (shdr_status || shdr_add_status) {
1616                 if (shdr_status == STATUS_FCF_TABLE_EMPTY)
1617                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1618                                         "2726 READ_FCF_RECORD Indicates empty "
1619                                         "FCF table.\n");
1620                 else
1621                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1622                                         "2521 READ_FCF_RECORD mailbox failed "
1623                                         "with status x%x add_status x%x, "
1624                                         "mbx\n", shdr_status, shdr_add_status);
1625                 return NULL;
1626         }
1627
1628         /* Interpreting the returned information of the FCF record */
1629         read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
1630         lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
1631                               sizeof(struct lpfc_mbx_read_fcf_tbl));
1632         *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
1633         new_fcf_record = (struct fcf_record *)(virt_addr +
1634                           sizeof(struct lpfc_mbx_read_fcf_tbl));
1635         lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
1636                                 offsetof(struct fcf_record, vlan_bitmap));
1637         new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
1638         new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
1639
1640         return new_fcf_record;
1641 }
1642
1643 /**
1644  * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
1645  * @phba: pointer to lpfc hba data structure.
1646  * @fcf_record: pointer to the fcf record.
1647  * @vlan_id: the lowest vlan identifier associated to this fcf record.
1648  * @next_fcf_index: the index to the next fcf record in hba's fcf table.
1649  *
1650  * This routine logs the detailed FCF record if the LOG_FIP loggin is
1651  * enabled.
1652  **/
1653 static void
1654 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
1655                               struct fcf_record *fcf_record,
1656                               uint16_t vlan_id,
1657                               uint16_t next_fcf_index)
1658 {
1659         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1660                         "2764 READ_FCF_RECORD:\n"
1661                         "\tFCF_Index     : x%x\n"
1662                         "\tFCF_Avail     : x%x\n"
1663                         "\tFCF_Valid     : x%x\n"
1664                         "\tFIP_Priority  : x%x\n"
1665                         "\tMAC_Provider  : x%x\n"
1666                         "\tLowest VLANID : x%x\n"
1667                         "\tFCF_MAC Addr  : x%x:%x:%x:%x:%x:%x\n"
1668                         "\tFabric_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1669                         "\tSwitch_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1670                         "\tNext_FCF_Index: x%x\n",
1671                         bf_get(lpfc_fcf_record_fcf_index, fcf_record),
1672                         bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
1673                         bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
1674                         fcf_record->fip_priority,
1675                         bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
1676                         vlan_id,
1677                         bf_get(lpfc_fcf_record_mac_0, fcf_record),
1678                         bf_get(lpfc_fcf_record_mac_1, fcf_record),
1679                         bf_get(lpfc_fcf_record_mac_2, fcf_record),
1680                         bf_get(lpfc_fcf_record_mac_3, fcf_record),
1681                         bf_get(lpfc_fcf_record_mac_4, fcf_record),
1682                         bf_get(lpfc_fcf_record_mac_5, fcf_record),
1683                         bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
1684                         bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
1685                         bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
1686                         bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
1687                         bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
1688                         bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
1689                         bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
1690                         bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
1691                         bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
1692                         bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
1693                         bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
1694                         bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
1695                         bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
1696                         bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
1697                         bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
1698                         bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
1699                         next_fcf_index);
1700 }
1701
1702 /**
1703  lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
1704  * @phba: pointer to lpfc hba data structure.
1705  * @fcf_rec: pointer to an existing FCF record.
1706  * @new_fcf_record: pointer to a new FCF record.
1707  * @new_vlan_id: vlan id from the new FCF record.
1708  *
1709  * This function performs matching test of a new FCF record against an existing
1710  * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
1711  * will not be used as part of the FCF record matching criteria.
1712  *
1713  * Returns true if all the fields matching, otherwise returns false.
1714  */
1715 static bool
1716 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
1717                            struct lpfc_fcf_rec *fcf_rec,
1718                            struct fcf_record *new_fcf_record,
1719                            uint16_t new_vlan_id)
1720 {
1721         if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
1722                 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
1723                         return false;
1724         if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
1725                 return false;
1726         if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
1727                 return false;
1728         if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
1729                 return false;
1730         return true;
1731 }
1732
1733 /**
1734  * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
1735  * @phba: pointer to lpfc hba data structure.
1736  * @mboxq: pointer to mailbox object.
1737  *
1738  * This function iterates through all the fcf records available in
1739  * HBA and chooses the optimal FCF record for discovery. After finding
1740  * the FCF for discovery it registers the FCF record and kicks start
1741  * discovery.
1742  * If FCF_IN_USE flag is set in currently used FCF, the routine tries to
1743  * use an FCF record which matches fabric name and mac address of the
1744  * currently used FCF record.
1745  * If the driver supports only one FCF, it will try to use the FCF record
1746  * used by BOOT_BIOS.
1747  */
1748 void
1749 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1750 {
1751         struct fcf_record *new_fcf_record;
1752         uint32_t boot_flag, addr_mode;
1753         uint16_t fcf_index, next_fcf_index;
1754         struct lpfc_fcf_rec *fcf_rec = NULL;
1755         uint16_t vlan_id;
1756         uint32_t seed;
1757         bool select_new_fcf;
1758         int rc;
1759
1760         /* If there is pending FCoE event restart FCF table scan */
1761         if (lpfc_check_pending_fcoe_event(phba, 0)) {
1762                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1763                 return;
1764         }
1765
1766         /* Parse the FCF record from the non-embedded mailbox command */
1767         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
1768                                                       &next_fcf_index);
1769         if (!new_fcf_record) {
1770                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
1771                                 "2765 Mailbox command READ_FCF_RECORD "
1772                                 "failed to retrieve a FCF record.\n");
1773                 /* Let next new FCF event trigger fast failover */
1774                 spin_lock_irq(&phba->hbalock);
1775                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1776                 spin_unlock_irq(&phba->hbalock);
1777                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1778                 return;
1779         }
1780
1781         /* Check the FCF record against the connection list */
1782         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
1783                                       &addr_mode, &vlan_id);
1784
1785         /* Log the FCF record information if turned on */
1786         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
1787                                       next_fcf_index);
1788
1789         /*
1790          * If the fcf record does not match with connect list entries
1791          * read the next entry; otherwise, this is an eligible FCF
1792          * record for round robin FCF failover.
1793          */
1794         if (!rc) {
1795                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
1796                                 "2781 FCF record (x%x) failed FCF "
1797                                 "connection list check, fcf_avail:x%x, "
1798                                 "fcf_valid:x%x\n",
1799                                 bf_get(lpfc_fcf_record_fcf_index,
1800                                        new_fcf_record),
1801                                 bf_get(lpfc_fcf_record_fcf_avail,
1802                                        new_fcf_record),
1803                                 bf_get(lpfc_fcf_record_fcf_valid,
1804                                        new_fcf_record));
1805                 if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
1806                     lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
1807                     new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
1808                         /*
1809                          * In case the current in-use FCF record becomes
1810                          * invalid/unavailable during FCF discovery that
1811                          * was not triggered by fast FCF failover process,
1812                          * treat it as fast FCF failover.
1813                          */
1814                         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
1815                             !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
1816                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
1817                                                 "2835 Invalid in-use FCF "
1818                                                 "record (x%x) reported, "
1819                                                 "entering fast FCF failover "
1820                                                 "mode scanning.\n",
1821                                                 phba->fcf.current_rec.fcf_indx);
1822                                 spin_lock_irq(&phba->hbalock);
1823                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
1824                                 spin_unlock_irq(&phba->hbalock);
1825                                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1826                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
1827                                                 LPFC_FCOE_FCF_GET_FIRST);
1828                                 return;
1829                         }
1830                 }
1831                 goto read_next_fcf;
1832         } else {
1833                 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1834                 rc = lpfc_sli4_fcf_rr_index_set(phba, fcf_index);
1835                 if (rc)
1836                         goto read_next_fcf;
1837         }
1838
1839         /*
1840          * If this is not the first FCF discovery of the HBA, use last
1841          * FCF record for the discovery. The condition that a rescan
1842          * matches the in-use FCF record: fabric name, switch name, mac
1843          * address, and vlan_id.
1844          */
1845         spin_lock_irq(&phba->hbalock);
1846         if (phba->fcf.fcf_flag & FCF_IN_USE) {
1847                 if (lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
1848                     new_fcf_record, vlan_id)) {
1849                         phba->fcf.fcf_flag |= FCF_AVAILABLE;
1850                         if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
1851                                 /* Stop FCF redisc wait timer if pending */
1852                                 __lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
1853                         else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
1854                                 /* If in fast failover, mark it's completed */
1855                                 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV |
1856                                                         FCF_DISCOVERY);
1857                         spin_unlock_irq(&phba->hbalock);
1858                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1859                                         "2836 The new FCF record (x%x) "
1860                                         "matches the in-use FCF record "
1861                                         "(x%x)\n",
1862                                         phba->fcf.current_rec.fcf_indx,
1863                                         bf_get(lpfc_fcf_record_fcf_index,
1864                                                new_fcf_record));
1865                         goto out;
1866                 }
1867                 /*
1868                  * Read next FCF record from HBA searching for the matching
1869                  * with in-use record only if not during the fast failover
1870                  * period. In case of fast failover period, it shall try to
1871                  * determine whether the FCF record just read should be the
1872                  * next candidate.
1873                  */
1874                 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
1875                         spin_unlock_irq(&phba->hbalock);
1876                         goto read_next_fcf;
1877                 }
1878         }
1879         /*
1880          * Update on failover FCF record only if it's in FCF fast-failover
1881          * period; otherwise, update on current FCF record.
1882          */
1883         if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
1884                 fcf_rec = &phba->fcf.failover_rec;
1885         else
1886                 fcf_rec = &phba->fcf.current_rec;
1887
1888         if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
1889                 /*
1890                  * If the driver FCF record does not have boot flag
1891                  * set and new hba fcf record has boot flag set, use
1892                  * the new hba fcf record.
1893                  */
1894                 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
1895                         /* Choose this FCF record */
1896                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1897                                         "2837 Update current FCF record "
1898                                         "(x%x) with new FCF record (x%x)\n",
1899                                         fcf_rec->fcf_indx,
1900                                         bf_get(lpfc_fcf_record_fcf_index,
1901                                         new_fcf_record));
1902                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
1903                                         addr_mode, vlan_id, BOOT_ENABLE);
1904                         spin_unlock_irq(&phba->hbalock);
1905                         goto read_next_fcf;
1906                 }
1907                 /*
1908                  * If the driver FCF record has boot flag set and the
1909                  * new hba FCF record does not have boot flag, read
1910                  * the next FCF record.
1911                  */
1912                 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
1913                         spin_unlock_irq(&phba->hbalock);
1914                         goto read_next_fcf;
1915                 }
1916                 /*
1917                  * If the new hba FCF record has lower priority value
1918                  * than the driver FCF record, use the new record.
1919                  */
1920                 if (new_fcf_record->fip_priority < fcf_rec->priority) {
1921                         /* Choose the new FCF record with lower priority */
1922                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1923                                         "2838 Update current FCF record "
1924                                         "(x%x) with new FCF record (x%x)\n",
1925                                         fcf_rec->fcf_indx,
1926                                         bf_get(lpfc_fcf_record_fcf_index,
1927                                                new_fcf_record));
1928                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
1929                                         addr_mode, vlan_id, 0);
1930                         /* Reset running random FCF selection count */
1931                         phba->fcf.eligible_fcf_cnt = 1;
1932                 } else if (new_fcf_record->fip_priority == fcf_rec->priority) {
1933                         /* Update running random FCF selection count */
1934                         phba->fcf.eligible_fcf_cnt++;
1935                         select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
1936                                                 phba->fcf.eligible_fcf_cnt);
1937                         if (select_new_fcf) {
1938                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1939                                         "2839 Update current FCF record "
1940                                         "(x%x) with new FCF record (x%x)\n",
1941                                         fcf_rec->fcf_indx,
1942                                         bf_get(lpfc_fcf_record_fcf_index,
1943                                                new_fcf_record));
1944                                 /* Choose the new FCF by random selection */
1945                                 __lpfc_update_fcf_record(phba, fcf_rec,
1946                                                          new_fcf_record,
1947                                                          addr_mode, vlan_id, 0);
1948                         }
1949                 }
1950                 spin_unlock_irq(&phba->hbalock);
1951                 goto read_next_fcf;
1952         }
1953         /*
1954          * This is the first suitable FCF record, choose this record for
1955          * initial best-fit FCF.
1956          */
1957         if (fcf_rec) {
1958                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1959                                 "2840 Update current FCF record "
1960                                 "with initial FCF record (x%x)\n",
1961                                 bf_get(lpfc_fcf_record_fcf_index,
1962                                        new_fcf_record));
1963                 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
1964                                          addr_mode, vlan_id, (boot_flag ?
1965                                          BOOT_ENABLE : 0));
1966                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
1967                 /* Setup initial running random FCF selection count */
1968                 phba->fcf.eligible_fcf_cnt = 1;
1969                 /* Seeding the random number generator for random selection */
1970                 seed = (uint32_t)(0xFFFFFFFF & jiffies);
1971                 srandom32(seed);
1972         }
1973         spin_unlock_irq(&phba->hbalock);
1974         goto read_next_fcf;
1975
1976 read_next_fcf:
1977         lpfc_sli4_mbox_cmd_free(phba, mboxq);
1978         if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
1979                 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
1980                         /*
1981                          * Case of FCF fast failover scan
1982                          */
1983
1984                         /*
1985                          * It has not found any suitable FCF record, cancel
1986                          * FCF scan inprogress, and do nothing
1987                          */
1988                         if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
1989                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
1990                                                "2782 No suitable FCF record "
1991                                                "found during this round of "
1992                                                "post FCF rediscovery scan: "
1993                                                "fcf_evt_tag:x%x, fcf_index: "
1994                                                "x%x\n",
1995                                                phba->fcoe_eventtag_at_fcf_scan,
1996                                                bf_get(lpfc_fcf_record_fcf_index,
1997                                                       new_fcf_record));
1998                                 /*
1999                                  * Let next new FCF event trigger fast
2000                                  * failover
2001                                  */
2002                                 spin_lock_irq(&phba->hbalock);
2003                                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
2004                                 spin_unlock_irq(&phba->hbalock);
2005                                 return;
2006                         }
2007                         /*
2008                          * It has found a suitable FCF record that is not
2009                          * the same as in-use FCF record, unregister the
2010                          * in-use FCF record, replace the in-use FCF record
2011                          * with the new FCF record, mark FCF fast failover
2012                          * completed, and then start register the new FCF
2013                          * record.
2014                          */
2015
2016                         /* Unregister the current in-use FCF record */
2017                         lpfc_unregister_fcf(phba);
2018
2019                         /* Replace in-use record with the new record */
2020                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2021                                         "2842 Replace the current in-use "
2022                                         "FCF record (x%x) with failover FCF "
2023                                         "record (x%x)\n",
2024                                         phba->fcf.current_rec.fcf_indx,
2025                                         phba->fcf.failover_rec.fcf_indx);
2026                         memcpy(&phba->fcf.current_rec,
2027                                &phba->fcf.failover_rec,
2028                                sizeof(struct lpfc_fcf_rec));
2029                         /*
2030                          * Mark the fast FCF failover rediscovery completed
2031                          * and the start of the first round of the roundrobin
2032                          * FCF failover.
2033                          */
2034                         spin_lock_irq(&phba->hbalock);
2035                         phba->fcf.fcf_flag &=
2036                                         ~(FCF_REDISC_FOV | FCF_REDISC_RRU);
2037                         spin_unlock_irq(&phba->hbalock);
2038                         /*
2039                          * Set up the initial registered FCF index for FLOGI
2040                          * round robin FCF failover.
2041                          */
2042                         phba->fcf.fcf_rr_init_indx =
2043                                         phba->fcf.failover_rec.fcf_indx;
2044                         /* Register to the new FCF record */
2045                         lpfc_register_fcf(phba);
2046                 } else {
2047                         /*
2048                          * In case of transaction period to fast FCF failover,
2049                          * do nothing when search to the end of the FCF table.
2050                          */
2051                         if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
2052                             (phba->fcf.fcf_flag & FCF_REDISC_PEND))
2053                                 return;
2054
2055                         if (phba->fcf.fcf_flag & FCF_IN_USE) {
2056                                 /*
2057                                  * In case the current in-use FCF record no
2058                                  * longer existed during FCF discovery that
2059                                  * was not triggered by fast FCF failover
2060                                  * process, treat it as fast FCF failover.
2061                                  */
2062                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2063                                                 "2841 In-use FCF record (x%x) "
2064                                                 "not reported, entering fast "
2065                                                 "FCF failover mode scanning.\n",
2066                                                 phba->fcf.current_rec.fcf_indx);
2067                                 spin_lock_irq(&phba->hbalock);
2068                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2069                                 spin_unlock_irq(&phba->hbalock);
2070                                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2071                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2072                                                 LPFC_FCOE_FCF_GET_FIRST);
2073                                 return;
2074                         }
2075
2076                         /*
2077                          * Otherwise, initial scan or post linkdown rescan,
2078                          * register with the best FCF record found so far
2079                          * through the FCF scanning process.
2080                          */
2081
2082                         /*
2083                          * Mark the initial FCF discovery completed and
2084                          * the start of the first round of the roundrobin
2085                          * FCF failover.
2086                          */
2087                         spin_lock_irq(&phba->hbalock);
2088                         phba->fcf.fcf_flag &=
2089                                         ~(FCF_INIT_DISC | FCF_REDISC_RRU);
2090                         spin_unlock_irq(&phba->hbalock);
2091                         /*
2092                          * Set up the initial registered FCF index for FLOGI
2093                          * round robin FCF failover
2094                          */
2095                         phba->fcf.fcf_rr_init_indx =
2096                                         phba->fcf.current_rec.fcf_indx;
2097                         /* Register to the new FCF record */
2098                         lpfc_register_fcf(phba);
2099                 }
2100         } else
2101                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
2102         return;
2103
2104 out:
2105         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2106         lpfc_register_fcf(phba);
2107
2108         return;
2109 }
2110
2111 /**
2112  * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf round robin read_fcf mbox cmpl hdler
2113  * @phba: pointer to lpfc hba data structure.
2114  * @mboxq: pointer to mailbox object.
2115  *
2116  * This is the callback function for FLOGI failure round robin FCF failover
2117  * read FCF record mailbox command from the eligible FCF record bmask for
2118  * performing the failover. If the FCF read back is not valid/available, it
2119  * fails through to retrying FLOGI to the currently registered FCF again.
2120  * Otherwise, if the FCF read back is valid and available, it will set the
2121  * newly read FCF record to the failover FCF record, unregister currently
2122  * registered FCF record, copy the failover FCF record to the current
2123  * FCF record, and then register the current FCF record before proceeding
2124  * to trying FLOGI on the new failover FCF.
2125  */
2126 void
2127 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2128 {
2129         struct fcf_record *new_fcf_record;
2130         uint32_t boot_flag, addr_mode;
2131         uint16_t next_fcf_index;
2132         uint16_t current_fcf_index;
2133         uint16_t vlan_id;
2134
2135         /* If link state is not up, stop the round robin failover process */
2136         if (phba->link_state < LPFC_LINK_UP) {
2137                 spin_lock_irq(&phba->hbalock);
2138                 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
2139                 spin_unlock_irq(&phba->hbalock);
2140                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2141                 return;
2142         }
2143
2144         /* Parse the FCF record from the non-embedded mailbox command */
2145         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2146                                                       &next_fcf_index);
2147         if (!new_fcf_record) {
2148                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2149                                 "2766 Mailbox command READ_FCF_RECORD "
2150                                 "failed to retrieve a FCF record.\n");
2151                 goto out;
2152         }
2153
2154         /* Get the needed parameters from FCF record */
2155         lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2156                                  &addr_mode, &vlan_id);
2157
2158         /* Log the FCF record information if turned on */
2159         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2160                                       next_fcf_index);
2161
2162         /* Upload new FCF record to the failover FCF record */
2163         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2164                         "2834 Update the current FCF record (x%x) "
2165                         "with the next FCF record (x%x)\n",
2166                         phba->fcf.failover_rec.fcf_indx,
2167                         bf_get(lpfc_fcf_record_fcf_index, new_fcf_record));
2168         spin_lock_irq(&phba->hbalock);
2169         __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
2170                                  new_fcf_record, addr_mode, vlan_id,
2171                                  (boot_flag ? BOOT_ENABLE : 0));
2172         spin_unlock_irq(&phba->hbalock);
2173
2174         current_fcf_index = phba->fcf.current_rec.fcf_indx;
2175
2176         /* Unregister the current in-use FCF record */
2177         lpfc_unregister_fcf(phba);
2178
2179         /* Replace in-use record with the new record */
2180         memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
2181                sizeof(struct lpfc_fcf_rec));
2182
2183         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2184                         "2783 FLOGI round robin FCF failover from FCF "
2185                         "(x%x) to FCF (x%x).\n",
2186                         current_fcf_index,
2187                         bf_get(lpfc_fcf_record_fcf_index, new_fcf_record));
2188
2189 out:
2190         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2191         lpfc_register_fcf(phba);
2192 }
2193
2194 /**
2195  * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
2196  * @phba: pointer to lpfc hba data structure.
2197  * @mboxq: pointer to mailbox object.
2198  *
2199  * This is the callback function of read FCF record mailbox command for
2200  * updating the eligible FCF bmask for FLOGI failure round robin FCF
2201  * failover when a new FCF event happened. If the FCF read back is
2202  * valid/available and it passes the connection list check, it updates
2203  * the bmask for the eligible FCF record for round robin failover.
2204  */
2205 void
2206 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2207 {
2208         struct fcf_record *new_fcf_record;
2209         uint32_t boot_flag, addr_mode;
2210         uint16_t fcf_index, next_fcf_index;
2211         uint16_t vlan_id;
2212         int rc;
2213
2214         /* If link state is not up, no need to proceed */
2215         if (phba->link_state < LPFC_LINK_UP)
2216                 goto out;
2217
2218         /* If FCF discovery period is over, no need to proceed */
2219         if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
2220                 goto out;
2221
2222         /* Parse the FCF record from the non-embedded mailbox command */
2223         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2224                                                       &next_fcf_index);
2225         if (!new_fcf_record) {
2226                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2227                                 "2767 Mailbox command READ_FCF_RECORD "
2228                                 "failed to retrieve a FCF record.\n");
2229                 goto out;
2230         }
2231
2232         /* Check the connection list for eligibility */
2233         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2234                                       &addr_mode, &vlan_id);
2235
2236         /* Log the FCF record information if turned on */
2237         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2238                                       next_fcf_index);
2239
2240         if (!rc)
2241                 goto out;
2242
2243         /* Update the eligible FCF record index bmask */
2244         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2245         rc = lpfc_sli4_fcf_rr_index_set(phba, fcf_index);
2246
2247 out:
2248         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2249 }
2250
2251 /**
2252  * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
2253  * @phba: pointer to lpfc hba data structure.
2254  * @mboxq: pointer to mailbox data structure.
2255  *
2256  * This function handles completion of init vpi mailbox command.
2257  */
2258 void
2259 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2260 {
2261         struct lpfc_vport *vport = mboxq->vport;
2262         struct lpfc_nodelist *ndlp;
2263         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2264
2265         if (mboxq->u.mb.mbxStatus) {
2266                 lpfc_printf_vlog(vport, KERN_ERR,
2267                                 LOG_MBOX,
2268                                 "2609 Init VPI mailbox failed 0x%x\n",
2269                                 mboxq->u.mb.mbxStatus);
2270                 mempool_free(mboxq, phba->mbox_mem_pool);
2271                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2272                 return;
2273         }
2274         spin_lock_irq(shost->host_lock);
2275         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
2276         spin_unlock_irq(shost->host_lock);
2277
2278         /* If this port is physical port or FDISC is done, do reg_vpi */
2279         if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
2280                         ndlp = lpfc_findnode_did(vport, Fabric_DID);
2281                         if (!ndlp)
2282                                 lpfc_printf_vlog(vport, KERN_ERR,
2283                                         LOG_DISCOVERY,
2284                                         "2731 Cannot find fabric "
2285                                         "controller node\n");
2286                         else
2287                                 lpfc_register_new_vport(phba, vport, ndlp);
2288                         mempool_free(mboxq, phba->mbox_mem_pool);
2289                         return;
2290         }
2291
2292         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2293                 lpfc_initial_fdisc(vport);
2294         else {
2295                 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
2296                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2297                                  "2606 No NPIV Fabric support\n");
2298         }
2299         mempool_free(mboxq, phba->mbox_mem_pool);
2300         return;
2301 }
2302
2303 /**
2304  * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
2305  * @vport: pointer to lpfc_vport data structure.
2306  *
2307  * This function issue a init_vpi mailbox command to initialize
2308  * VPI for the vport.
2309  */
2310 void
2311 lpfc_issue_init_vpi(struct lpfc_vport *vport)
2312 {
2313         LPFC_MBOXQ_t *mboxq;
2314         int rc;
2315
2316         mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
2317         if (!mboxq) {
2318                 lpfc_printf_vlog(vport, KERN_ERR,
2319                         LOG_MBOX, "2607 Failed to allocate "
2320                         "init_vpi mailbox\n");
2321                 return;
2322         }
2323         lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
2324         mboxq->vport = vport;
2325         mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
2326         rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
2327         if (rc == MBX_NOT_FINISHED) {
2328                 lpfc_printf_vlog(vport, KERN_ERR,
2329                         LOG_MBOX, "2608 Failed to issue init_vpi mailbox\n");
2330                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
2331         }
2332 }
2333
2334 /**
2335  * lpfc_start_fdiscs - send fdiscs for each vports on this port.
2336  * @phba: pointer to lpfc hba data structure.
2337  *
2338  * This function loops through the list of vports on the @phba and issues an
2339  * FDISC if possible.
2340  */
2341 void
2342 lpfc_start_fdiscs(struct lpfc_hba *phba)
2343 {
2344         struct lpfc_vport **vports;
2345         int i;
2346
2347         vports = lpfc_create_vport_work_array(phba);
2348         if (vports != NULL) {
2349                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2350                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
2351                                 continue;
2352                         /* There are no vpi for this vport */
2353                         if (vports[i]->vpi > phba->max_vpi) {
2354                                 lpfc_vport_set_state(vports[i],
2355                                                      FC_VPORT_FAILED);
2356                                 continue;
2357                         }
2358                         if (phba->fc_topology == TOPOLOGY_LOOP) {
2359                                 lpfc_vport_set_state(vports[i],
2360                                                      FC_VPORT_LINKDOWN);
2361                                 continue;
2362                         }
2363                         if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
2364                                 lpfc_issue_init_vpi(vports[i]);
2365                                 continue;
2366                         }
2367                         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2368                                 lpfc_initial_fdisc(vports[i]);
2369                         else {
2370                                 lpfc_vport_set_state(vports[i],
2371                                                      FC_VPORT_NO_FABRIC_SUPP);
2372                                 lpfc_printf_vlog(vports[i], KERN_ERR,
2373                                                  LOG_ELS,
2374                                                  "0259 No NPIV "
2375                                                  "Fabric support\n");
2376                         }
2377                 }
2378         }
2379         lpfc_destroy_vport_work_array(phba, vports);
2380 }
2381
2382 void
2383 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2384 {
2385         struct lpfc_dmabuf *dmabuf = mboxq->context1;
2386         struct lpfc_vport *vport = mboxq->vport;
2387         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2388
2389         if (mboxq->u.mb.mbxStatus) {
2390                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2391                          "2018 REG_VFI mbxStatus error x%x "
2392                          "HBA state x%x\n",
2393                          mboxq->u.mb.mbxStatus, vport->port_state);
2394                 if (phba->fc_topology == TOPOLOGY_LOOP) {
2395                         /* FLOGI failed, use loop map to make discovery list */
2396                         lpfc_disc_list_loopmap(vport);
2397                         /* Start discovery */
2398                         lpfc_disc_start(vport);
2399                         goto fail_free_mem;
2400                 }
2401                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2402                 goto fail_free_mem;
2403         }
2404         /* The VPI is implicitly registered when the VFI is registered */
2405         spin_lock_irq(shost->host_lock);
2406         vport->vpi_state |= LPFC_VPI_REGISTERED;
2407         vport->fc_flag |= FC_VFI_REGISTERED;
2408         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
2409         spin_unlock_irq(shost->host_lock);
2410
2411         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
2412                 lpfc_start_fdiscs(phba);
2413                 lpfc_do_scr_ns_plogi(phba, vport);
2414         }
2415
2416 fail_free_mem:
2417         mempool_free(mboxq, phba->mbox_mem_pool);
2418         lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
2419         kfree(dmabuf);
2420         return;
2421 }
2422
2423 static void
2424 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2425 {
2426         MAILBOX_t *mb = &pmb->u.mb;
2427         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
2428         struct lpfc_vport  *vport = pmb->vport;
2429
2430
2431         /* Check for error */
2432         if (mb->mbxStatus) {
2433                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
2434                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2435                                  "0319 READ_SPARAM mbxStatus error x%x "
2436                                  "hba state x%x>\n",
2437                                  mb->mbxStatus, vport->port_state);
2438                 lpfc_linkdown(phba);
2439                 goto out;
2440         }
2441
2442         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
2443                sizeof (struct serv_parm));
2444         if (phba->cfg_soft_wwnn)
2445                 u64_to_wwn(phba->cfg_soft_wwnn,
2446                            vport->fc_sparam.nodeName.u.wwn);
2447         if (phba->cfg_soft_wwpn)
2448                 u64_to_wwn(phba->cfg_soft_wwpn,
2449                            vport->fc_sparam.portName.u.wwn);
2450         memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
2451                sizeof(vport->fc_nodename));
2452         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
2453                sizeof(vport->fc_portname));
2454         if (vport->port_type == LPFC_PHYSICAL_PORT) {
2455                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
2456                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
2457         }
2458
2459         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2460         kfree(mp);
2461         mempool_free(pmb, phba->mbox_mem_pool);
2462         return;
2463
2464 out:
2465         pmb->context1 = NULL;
2466         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2467         kfree(mp);
2468         lpfc_issue_clear_la(phba, vport);
2469         mempool_free(pmb, phba->mbox_mem_pool);
2470         return;
2471 }
2472
2473 static void
2474 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
2475 {
2476         struct lpfc_vport *vport = phba->pport;
2477         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
2478         int i;
2479         struct lpfc_dmabuf *mp;
2480         int rc;
2481         struct fcf_record *fcf_record;
2482
2483         spin_lock_irq(&phba->hbalock);
2484         switch (la->UlnkSpeed) {
2485         case LA_1GHZ_LINK:
2486                 phba->fc_linkspeed = LA_1GHZ_LINK;
2487                 break;
2488         case LA_2GHZ_LINK:
2489                 phba->fc_linkspeed = LA_2GHZ_LINK;
2490                 break;
2491         case LA_4GHZ_LINK:
2492                 phba->fc_linkspeed = LA_4GHZ_LINK;
2493                 break;
2494         case LA_8GHZ_LINK:
2495                 phba->fc_linkspeed = LA_8GHZ_LINK;
2496                 break;
2497         case LA_10GHZ_LINK:
2498                 phba->fc_linkspeed = LA_10GHZ_LINK;
2499                 break;
2500         default:
2501                 phba->fc_linkspeed = LA_UNKNW_LINK;
2502                 break;
2503         }
2504
2505         phba->fc_topology = la->topology;
2506         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
2507
2508         if (phba->fc_topology == TOPOLOGY_LOOP) {
2509                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
2510
2511                 /* if npiv is enabled and this adapter supports npiv log
2512                  * a message that npiv is not supported in this topology
2513                  */
2514                 if (phba->cfg_enable_npiv && phba->max_vpi)
2515                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2516                                 "1309 Link Up Event npiv not supported in loop "
2517                                 "topology\n");
2518                                 /* Get Loop Map information */
2519                 if (la->il)
2520                         vport->fc_flag |= FC_LBIT;
2521
2522                 vport->fc_myDID = la->granted_AL_PA;
2523                 i = la->un.lilpBde64.tus.f.bdeSize;
2524
2525                 if (i == 0) {
2526                         phba->alpa_map[0] = 0;
2527                 } else {
2528                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
2529                                 int numalpa, j, k;
2530                                 union {
2531                                         uint8_t pamap[16];
2532                                         struct {
2533                                                 uint32_t wd1;
2534                                                 uint32_t wd2;
2535                                                 uint32_t wd3;
2536                                                 uint32_t wd4;
2537                                         } pa;
2538                                 } un;
2539                                 numalpa = phba->alpa_map[0];
2540                                 j = 0;
2541                                 while (j < numalpa) {
2542                                         memset(un.pamap, 0, 16);
2543                                         for (k = 1; j < numalpa; k++) {
2544                                                 un.pamap[k - 1] =
2545                                                         phba->alpa_map[j + 1];
2546                                                 j++;
2547                                                 if (k == 16)
2548                                                         break;
2549                                         }
2550                                         /* Link Up Event ALPA map */
2551                                         lpfc_printf_log(phba,
2552                                                         KERN_WARNING,
2553                                                         LOG_LINK_EVENT,
2554                                                         "1304 Link Up Event "
2555                                                         "ALPA map Data: x%x "
2556                                                         "x%x x%x x%x\n",
2557                                                         un.pa.wd1, un.pa.wd2,
2558                                                         un.pa.wd3, un.pa.wd4);
2559                                 }
2560                         }
2561                 }
2562         } else {
2563                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
2564                         if (phba->max_vpi && phba->cfg_enable_npiv &&
2565                            (phba->sli_rev == 3))
2566                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
2567                 }
2568                 vport->fc_myDID = phba->fc_pref_DID;
2569                 vport->fc_flag |= FC_LBIT;
2570         }
2571         spin_unlock_irq(&phba->hbalock);
2572
2573         lpfc_linkup(phba);
2574         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2575         if (!sparam_mbox)
2576                 goto out;
2577
2578         rc = lpfc_read_sparam(phba, sparam_mbox, 0);
2579         if (rc) {
2580                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
2581                 goto out;
2582         }
2583         sparam_mbox->vport = vport;
2584         sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
2585         rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
2586         if (rc == MBX_NOT_FINISHED) {
2587                 mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
2588                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2589                 kfree(mp);
2590                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
2591                 goto out;
2592         }
2593
2594         if (!(phba->hba_flag & HBA_FCOE_SUPPORT)) {
2595                 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2596                 if (!cfglink_mbox)
2597                         goto out;
2598                 vport->port_state = LPFC_LOCAL_CFG_LINK;
2599                 lpfc_config_link(phba, cfglink_mbox);
2600                 cfglink_mbox->vport = vport;
2601                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
2602                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
2603                 if (rc == MBX_NOT_FINISHED) {
2604                         mempool_free(cfglink_mbox, phba->mbox_mem_pool);
2605                         goto out;
2606                 }
2607         } else {
2608                 vport->port_state = LPFC_VPORT_UNKNOWN;
2609                 /*
2610                  * Add the driver's default FCF record at FCF index 0 now. This
2611                  * is phase 1 implementation that support FCF index 0 and driver
2612                  * defaults.
2613                  */
2614                 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
2615                         fcf_record = kzalloc(sizeof(struct fcf_record),
2616                                         GFP_KERNEL);
2617                         if (unlikely(!fcf_record)) {
2618                                 lpfc_printf_log(phba, KERN_ERR,
2619                                         LOG_MBOX | LOG_SLI,
2620                                         "2554 Could not allocate memmory for "
2621                                         "fcf record\n");
2622                                 rc = -ENODEV;
2623                                 goto out;
2624                         }
2625
2626                         lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
2627                                                 LPFC_FCOE_FCF_DEF_INDEX);
2628                         rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
2629                         if (unlikely(rc)) {
2630                                 lpfc_printf_log(phba, KERN_ERR,
2631                                         LOG_MBOX | LOG_SLI,
2632                                         "2013 Could not manually add FCF "
2633                                         "record 0, status %d\n", rc);
2634                                 rc = -ENODEV;
2635                                 kfree(fcf_record);
2636                                 goto out;
2637                         }
2638                         kfree(fcf_record);
2639                 }
2640                 /*
2641                  * The driver is expected to do FIP/FCF. Call the port
2642                  * and get the FCF Table.
2643                  */
2644                 spin_lock_irq(&phba->hbalock);
2645                 if (phba->hba_flag & FCF_DISC_INPROGRESS) {
2646                         spin_unlock_irq(&phba->hbalock);
2647                         return;
2648                 }
2649                 /* This is the initial FCF discovery scan */
2650                 phba->fcf.fcf_flag |= FCF_INIT_DISC;
2651                 spin_unlock_irq(&phba->hbalock);
2652                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
2653                                 "2778 Start FCF table scan at linkup\n");
2654
2655                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2656                                                      LPFC_FCOE_FCF_GET_FIRST);
2657                 if (rc) {
2658                         spin_lock_irq(&phba->hbalock);
2659                         phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
2660                         spin_unlock_irq(&phba->hbalock);
2661                         goto out;
2662                 }
2663         }
2664
2665         return;
2666 out:
2667         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2668         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2669                          "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
2670                          vport->port_state, sparam_mbox, cfglink_mbox);
2671         lpfc_issue_clear_la(phba, vport);
2672         return;
2673 }
2674
2675 static void
2676 lpfc_enable_la(struct lpfc_hba *phba)
2677 {
2678         uint32_t control;
2679         struct lpfc_sli *psli = &phba->sli;
2680         spin_lock_irq(&phba->hbalock);
2681         psli->sli_flag |= LPFC_PROCESS_LA;
2682         if (phba->sli_rev <= LPFC_SLI_REV3) {
2683                 control = readl(phba->HCregaddr);
2684                 control |= HC_LAINT_ENA;
2685                 writel(control, phba->HCregaddr);
2686                 readl(phba->HCregaddr); /* flush */
2687         }
2688         spin_unlock_irq(&phba->hbalock);
2689 }
2690
2691 static void
2692 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
2693 {
2694         lpfc_linkdown(phba);
2695         lpfc_enable_la(phba);
2696         lpfc_unregister_unused_fcf(phba);
2697         /* turn on Link Attention interrupts - no CLEAR_LA needed */
2698 }
2699
2700
2701 /*
2702  * This routine handles processing a READ_LA mailbox
2703  * command upon completion. It is setup in the LPFC_MBOXQ
2704  * as the completion routine when the command is
2705  * handed off to the SLI layer.
2706  */
2707 void
2708 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2709 {
2710         struct lpfc_vport *vport = pmb->vport;
2711         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2712         READ_LA_VAR *la;
2713         MAILBOX_t *mb = &pmb->u.mb;
2714         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2715
2716         /* Unblock ELS traffic */
2717         phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
2718         /* Check for error */
2719         if (mb->mbxStatus) {
2720                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
2721                                 "1307 READ_LA mbox error x%x state x%x\n",
2722                                 mb->mbxStatus, vport->port_state);
2723                 lpfc_mbx_issue_link_down(phba);
2724                 phba->link_state = LPFC_HBA_ERROR;
2725                 goto lpfc_mbx_cmpl_read_la_free_mbuf;
2726         }
2727
2728         la = (READ_LA_VAR *) &pmb->u.mb.un.varReadLA;
2729
2730         memcpy(&phba->alpa_map[0], mp->virt, 128);
2731
2732         spin_lock_irq(shost->host_lock);
2733         if (la->pb)
2734                 vport->fc_flag |= FC_BYPASSED_MODE;
2735         else
2736                 vport->fc_flag &= ~FC_BYPASSED_MODE;
2737         spin_unlock_irq(shost->host_lock);
2738
2739         if ((phba->fc_eventTag  < la->eventTag) ||
2740             (phba->fc_eventTag == la->eventTag)) {
2741                 phba->fc_stat.LinkMultiEvent++;
2742                 if (la->attType == AT_LINK_UP)
2743                         if (phba->fc_eventTag != 0)
2744                                 lpfc_linkdown(phba);
2745         }
2746
2747         phba->fc_eventTag = la->eventTag;
2748         spin_lock_irq(&phba->hbalock);
2749         if (la->mm)
2750                 phba->sli.sli_flag |= LPFC_MENLO_MAINT;
2751         else
2752                 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
2753         spin_unlock_irq(&phba->hbalock);
2754
2755         phba->link_events++;
2756         if (la->attType == AT_LINK_UP && (!la->mm)) {
2757                 phba->fc_stat.LinkUp++;
2758                 if (phba->link_flag & LS_LOOPBACK_MODE) {
2759                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2760                                         "1306 Link Up Event in loop back mode "
2761                                         "x%x received Data: x%x x%x x%x x%x\n",
2762                                         la->eventTag, phba->fc_eventTag,
2763                                         la->granted_AL_PA, la->UlnkSpeed,
2764                                         phba->alpa_map[0]);
2765                 } else {
2766                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2767                                         "1303 Link Up Event x%x received "
2768                                         "Data: x%x x%x x%x x%x x%x x%x %d\n",
2769                                         la->eventTag, phba->fc_eventTag,
2770                                         la->granted_AL_PA, la->UlnkSpeed,
2771                                         phba->alpa_map[0],
2772                                         la->mm, la->fa,
2773                                         phba->wait_4_mlo_maint_flg);
2774                 }
2775                 lpfc_mbx_process_link_up(phba, la);
2776         } else if (la->attType == AT_LINK_DOWN) {
2777                 phba->fc_stat.LinkDown++;
2778                 if (phba->link_flag & LS_LOOPBACK_MODE) {
2779                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2780                                 "1308 Link Down Event in loop back mode "
2781                                 "x%x received "
2782                                 "Data: x%x x%x x%x\n",
2783                                 la->eventTag, phba->fc_eventTag,
2784                                 phba->pport->port_state, vport->fc_flag);
2785                 }
2786                 else {
2787                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2788                                 "1305 Link Down Event x%x received "
2789                                 "Data: x%x x%x x%x x%x x%x\n",
2790                                 la->eventTag, phba->fc_eventTag,
2791                                 phba->pport->port_state, vport->fc_flag,
2792                                 la->mm, la->fa);
2793                 }
2794                 lpfc_mbx_issue_link_down(phba);
2795         }
2796         if (la->mm && la->attType == AT_LINK_UP) {
2797                 if (phba->link_state != LPFC_LINK_DOWN) {
2798                         phba->fc_stat.LinkDown++;
2799                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2800                                 "1312 Link Down Event x%x received "
2801                                 "Data: x%x x%x x%x\n",
2802                                 la->eventTag, phba->fc_eventTag,
2803                                 phba->pport->port_state, vport->fc_flag);
2804                         lpfc_mbx_issue_link_down(phba);
2805                 } else
2806                         lpfc_enable_la(phba);
2807
2808                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2809                                 "1310 Menlo Maint Mode Link up Event x%x rcvd "
2810                                 "Data: x%x x%x x%x\n",
2811                                 la->eventTag, phba->fc_eventTag,
2812                                 phba->pport->port_state, vport->fc_flag);
2813                 /*
2814                  * The cmnd that triggered this will be waiting for this
2815                  * signal.
2816                  */
2817                 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
2818                 if (phba->wait_4_mlo_maint_flg) {
2819                         phba->wait_4_mlo_maint_flg = 0;
2820                         wake_up_interruptible(&phba->wait_4_mlo_m_q);
2821                 }
2822         }
2823
2824         if (la->fa) {
2825                 if (la->mm)
2826                         lpfc_issue_clear_la(phba, vport);
2827                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
2828                                 "1311 fa %d\n", la->fa);
2829         }
2830
2831 lpfc_mbx_cmpl_read_la_free_mbuf:
2832         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2833         kfree(mp);
2834         mempool_free(pmb, phba->mbox_mem_pool);
2835         return;
2836 }
2837
2838 /*
2839  * This routine handles processing a REG_LOGIN mailbox
2840  * command upon completion. It is setup in the LPFC_MBOXQ
2841  * as the completion routine when the command is
2842  * handed off to the SLI layer.
2843  */
2844 void
2845 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2846 {
2847         struct lpfc_vport  *vport = pmb->vport;
2848         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2849         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2850         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2851
2852         pmb->context1 = 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         if (mb->mbxStatus) {
3152                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
3153                                  "0258 Register Fabric login error: 0x%x\n",
3154                                  mb->mbxStatus);
3155                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3156                 kfree(mp);
3157                 mempool_free(pmb, phba->mbox_mem_pool);
3158
3159                 if (phba->fc_topology == TOPOLOGY_LOOP) {
3160                         /* FLOGI failed, use loop map to make discovery list */
3161                         lpfc_disc_list_loopmap(vport);
3162
3163                         /* Start discovery */
3164                         lpfc_disc_start(vport);
3165                         /* Decrement the reference count to ndlp after the
3166                          * reference to the ndlp are done.
3167                          */
3168                         lpfc_nlp_put(ndlp);
3169                         return;
3170                 }
3171
3172                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3173                 /* Decrement the reference count to ndlp after the reference
3174                  * to the ndlp are done.
3175                  */
3176                 lpfc_nlp_put(ndlp);
3177                 return;
3178         }
3179
3180         ndlp->nlp_rpi = mb->un.varWords[0];
3181         ndlp->nlp_flag |= NLP_RPI_VALID;
3182         ndlp->nlp_type |= NLP_FABRIC;
3183         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3184
3185         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3186                 /* when physical port receive logo donot start
3187                  * vport discovery */
3188                 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
3189                         lpfc_start_fdiscs(phba);
3190                 else
3191                         vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ;
3192                 lpfc_do_scr_ns_plogi(phba, vport);
3193         }
3194
3195         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3196         kfree(mp);
3197         mempool_free(pmb, phba->mbox_mem_pool);
3198
3199         /* Drop the reference count from the mbox at the end after
3200          * all the current reference to the ndlp have been done.
3201          */
3202         lpfc_nlp_put(ndlp);
3203         return;
3204 }
3205
3206 /*
3207  * This routine handles processing a NameServer REG_LOGIN mailbox
3208  * command upon completion. It is setup in the LPFC_MBOXQ
3209  * as the completion routine when the command is
3210  * handed off to the SLI layer.
3211  */
3212 void
3213 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3214 {
3215         MAILBOX_t *mb = &pmb->u.mb;
3216         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3217         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3218         struct lpfc_vport *vport = pmb->vport;
3219
3220         if (mb->mbxStatus) {
3221 out:
3222                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3223                                  "0260 Register NameServer error: 0x%x\n",
3224                                  mb->mbxStatus);
3225                 /* decrement the node reference count held for this
3226                  * callback function.
3227                  */
3228                 lpfc_nlp_put(ndlp);
3229                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3230                 kfree(mp);
3231                 mempool_free(pmb, phba->mbox_mem_pool);
3232
3233                 /* If no other thread is using the ndlp, free it */
3234                 lpfc_nlp_not_used(ndlp);
3235
3236                 if (phba->fc_topology == TOPOLOGY_LOOP) {
3237                         /*
3238                          * RegLogin failed, use loop map to make discovery
3239                          * list
3240                          */
3241                         lpfc_disc_list_loopmap(vport);
3242
3243                         /* Start discovery */
3244                         lpfc_disc_start(vport);
3245                         return;
3246                 }
3247                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3248                 return;
3249         }
3250
3251         pmb->context1 = NULL;
3252
3253         ndlp->nlp_rpi = mb->un.varWords[0];
3254         ndlp->nlp_flag |= NLP_RPI_VALID;
3255         ndlp->nlp_type |= NLP_FABRIC;
3256         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3257
3258         if (vport->port_state < LPFC_VPORT_READY) {
3259                 /* Link up discovery requires Fabric registration. */
3260                 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
3261                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
3262                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
3263                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
3264                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
3265
3266                 /* Issue SCR just before NameServer GID_FT Query */
3267                 lpfc_issue_els_scr(vport, SCR_DID, 0);
3268         }
3269
3270         vport->fc_ns_retry = 0;
3271         /* Good status, issue CT Request to NameServer */
3272         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
3273                 /* Cannot issue NameServer Query, so finish up discovery */
3274                 goto out;
3275         }
3276
3277         /* decrement the node reference count held for this
3278          * callback function.
3279          */
3280         lpfc_nlp_put(ndlp);
3281         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3282         kfree(mp);
3283         mempool_free(pmb, phba->mbox_mem_pool);
3284
3285         return;
3286 }
3287
3288 static void
3289 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3290 {
3291         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3292         struct fc_rport  *rport;
3293         struct lpfc_rport_data *rdata;
3294         struct fc_rport_identifiers rport_ids;
3295         struct lpfc_hba  *phba = vport->phba;
3296
3297         /* Remote port has reappeared. Re-register w/ FC transport */
3298         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
3299         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
3300         rport_ids.port_id = ndlp->nlp_DID;
3301         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
3302
3303         /*
3304          * We leave our node pointer in rport->dd_data when we unregister a
3305          * FCP target port.  But fc_remote_port_add zeros the space to which
3306          * rport->dd_data points.  So, if we're reusing a previously
3307          * registered port, drop the reference that we took the last time we
3308          * registered the port.
3309          */
3310         if (ndlp->rport && ndlp->rport->dd_data &&
3311             ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
3312                 lpfc_nlp_put(ndlp);
3313
3314         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
3315                 "rport add:       did:x%x flg:x%x type x%x",
3316                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3317
3318         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
3319         if (!rport || !get_device(&rport->dev)) {
3320                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
3321                            "Warning: fc_remote_port_add failed\n");
3322                 return;
3323         }
3324
3325         /* initialize static port data */
3326         rport->maxframe_size = ndlp->nlp_maxframe;
3327         rport->supported_classes = ndlp->nlp_class_sup;
3328         rdata = rport->dd_data;
3329         rdata->pnode = lpfc_nlp_get(ndlp);
3330
3331         if (ndlp->nlp_type & NLP_FCP_TARGET)
3332                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
3333         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
3334                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
3335
3336
3337         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
3338                 fc_remote_port_rolechg(rport, rport_ids.roles);
3339
3340         if ((rport->scsi_target_id != -1) &&
3341             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
3342                 ndlp->nlp_sid = rport->scsi_target_id;
3343         }
3344         return;
3345 }
3346
3347 static void
3348 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
3349 {
3350         struct fc_rport *rport = ndlp->rport;
3351
3352         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
3353                 "rport delete:    did:x%x flg:x%x type x%x",
3354                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3355
3356         fc_remote_port_delete(rport);
3357
3358         return;
3359 }
3360
3361 static void
3362 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
3363 {
3364         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3365
3366         spin_lock_irq(shost->host_lock);
3367         switch (state) {
3368         case NLP_STE_UNUSED_NODE:
3369                 vport->fc_unused_cnt += count;
3370                 break;
3371         case NLP_STE_PLOGI_ISSUE:
3372                 vport->fc_plogi_cnt += count;
3373                 break;
3374         case NLP_STE_ADISC_ISSUE:
3375                 vport->fc_adisc_cnt += count;
3376                 break;
3377         case NLP_STE_REG_LOGIN_ISSUE:
3378                 vport->fc_reglogin_cnt += count;
3379                 break;
3380         case NLP_STE_PRLI_ISSUE:
3381                 vport->fc_prli_cnt += count;
3382                 break;
3383         case NLP_STE_UNMAPPED_NODE:
3384                 vport->fc_unmap_cnt += count;
3385                 break;
3386         case NLP_STE_MAPPED_NODE:
3387                 vport->fc_map_cnt += count;
3388                 break;
3389         case NLP_STE_NPR_NODE:
3390                 vport->fc_npr_cnt += count;
3391                 break;
3392         }
3393         spin_unlock_irq(shost->host_lock);
3394 }
3395
3396 static void
3397 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3398                        int old_state, int new_state)
3399 {
3400         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3401
3402         if (new_state == NLP_STE_UNMAPPED_NODE) {
3403                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
3404                 ndlp->nlp_type |= NLP_FC_NODE;
3405         }
3406         if (new_state == NLP_STE_MAPPED_NODE)
3407                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
3408         if (new_state == NLP_STE_NPR_NODE)
3409                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
3410
3411         /* Transport interface */
3412         if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
3413                             old_state == NLP_STE_UNMAPPED_NODE)) {
3414                 vport->phba->nport_event_cnt++;
3415                 lpfc_unregister_remote_port(ndlp);
3416         }
3417
3418         if (new_state ==  NLP_STE_MAPPED_NODE ||
3419             new_state == NLP_STE_UNMAPPED_NODE) {
3420                 vport->phba->nport_event_cnt++;
3421                 /*
3422                  * Tell the fc transport about the port, if we haven't
3423                  * already. If we have, and it's a scsi entity, be
3424                  * sure to unblock any attached scsi devices
3425                  */
3426                 lpfc_register_remote_port(vport, ndlp);
3427         }
3428         if ((new_state ==  NLP_STE_MAPPED_NODE) &&
3429                 (vport->stat_data_enabled)) {
3430                 /*
3431                  * A new target is discovered, if there is no buffer for
3432                  * statistical data collection allocate buffer.
3433                  */
3434                 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
3435                                          sizeof(struct lpfc_scsicmd_bkt),
3436                                          GFP_KERNEL);
3437
3438                 if (!ndlp->lat_data)
3439                         lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3440                                 "0286 lpfc_nlp_state_cleanup failed to "
3441                                 "allocate statistical data buffer DID "
3442                                 "0x%x\n", ndlp->nlp_DID);
3443         }
3444         /*
3445          * if we added to Mapped list, but the remote port
3446          * registration failed or assigned a target id outside
3447          * our presentable range - move the node to the
3448          * Unmapped List
3449          */
3450         if (new_state == NLP_STE_MAPPED_NODE &&
3451             (!ndlp->rport ||
3452              ndlp->rport->scsi_target_id == -1 ||
3453              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
3454                 spin_lock_irq(shost->host_lock);
3455                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
3456                 spin_unlock_irq(shost->host_lock);
3457                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3458         }
3459 }
3460
3461 static char *
3462 lpfc_nlp_state_name(char *buffer, size_t size, int state)
3463 {
3464         static char *states[] = {
3465                 [NLP_STE_UNUSED_NODE] = "UNUSED",
3466                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
3467                 [NLP_STE_ADISC_ISSUE] = "ADISC",
3468                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
3469                 [NLP_STE_PRLI_ISSUE] = "PRLI",
3470                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
3471                 [NLP_STE_MAPPED_NODE] = "MAPPED",
3472                 [NLP_STE_NPR_NODE] = "NPR",
3473         };
3474
3475         if (state < NLP_STE_MAX_STATE && states[state])
3476                 strlcpy(buffer, states[state], size);
3477         else
3478                 snprintf(buffer, size, "unknown (%d)", state);
3479         return buffer;
3480 }
3481
3482 void
3483 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3484                    int state)
3485 {
3486         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3487         int  old_state = ndlp->nlp_state;
3488         char name1[16], name2[16];
3489
3490         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3491                          "0904 NPort state transition x%06x, %s -> %s\n",
3492                          ndlp->nlp_DID,
3493                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
3494                          lpfc_nlp_state_name(name2, sizeof(name2), state));
3495
3496         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
3497                 "node statechg    did:x%x old:%d ste:%d",
3498                 ndlp->nlp_DID, old_state, state);
3499
3500         if (old_state == NLP_STE_NPR_NODE &&
3501             state != NLP_STE_NPR_NODE)
3502                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
3503         if (old_state == NLP_STE_UNMAPPED_NODE) {
3504                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
3505                 ndlp->nlp_type &= ~NLP_FC_NODE;
3506         }
3507
3508         if (list_empty(&ndlp->nlp_listp)) {
3509                 spin_lock_irq(shost->host_lock);
3510                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
3511                 spin_unlock_irq(shost->host_lock);
3512         } else if (old_state)
3513                 lpfc_nlp_counters(vport, old_state, -1);
3514
3515         ndlp->nlp_state = state;
3516         lpfc_nlp_counters(vport, state, 1);
3517         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
3518 }
3519
3520 void
3521 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3522 {
3523         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3524
3525         if (list_empty(&ndlp->nlp_listp)) {
3526                 spin_lock_irq(shost->host_lock);
3527                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
3528                 spin_unlock_irq(shost->host_lock);
3529         }
3530 }
3531
3532 void
3533 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3534 {
3535         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3536
3537         lpfc_cancel_retry_delay_tmo(vport, ndlp);
3538         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
3539                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
3540         spin_lock_irq(shost->host_lock);
3541         list_del_init(&ndlp->nlp_listp);
3542         spin_unlock_irq(shost->host_lock);
3543         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
3544                                 NLP_STE_UNUSED_NODE);
3545 }
3546
3547 static void
3548 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3549 {
3550         lpfc_cancel_retry_delay_tmo(vport, ndlp);
3551         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
3552                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
3553         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
3554                                 NLP_STE_UNUSED_NODE);
3555 }
3556 /**
3557  * lpfc_initialize_node - Initialize all fields of node object
3558  * @vport: Pointer to Virtual Port object.
3559  * @ndlp: Pointer to FC node object.
3560  * @did: FC_ID of the node.
3561  *
3562  * This function is always called when node object need to be initialized.
3563  * It initializes all the fields of the node object. Although the reference
3564  * to phba from @ndlp can be obtained indirectly through it's reference to
3565  * @vport, a direct reference to phba is taken here by @ndlp. This is due
3566  * to the life-span of the @ndlp might go beyond the existence of @vport as
3567  * the final release of ndlp is determined by its reference count. And, the
3568  * operation on @ndlp needs the reference to phba.
3569  **/
3570 static inline void
3571 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3572         uint32_t did)
3573 {
3574         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
3575         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
3576         init_timer(&ndlp->nlp_delayfunc);
3577         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
3578         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
3579         ndlp->nlp_DID = did;
3580         ndlp->vport = vport;
3581         ndlp->phba = vport->phba;
3582         ndlp->nlp_sid = NLP_NO_SID;
3583         kref_init(&ndlp->kref);
3584         NLP_INT_NODE_ACT(ndlp);
3585         atomic_set(&ndlp->cmd_pending, 0);
3586         ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
3587 }
3588
3589 struct lpfc_nodelist *
3590 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3591                  int state)
3592 {
3593         struct lpfc_hba *phba = vport->phba;
3594         uint32_t did;
3595         unsigned long flags;
3596
3597         if (!ndlp)
3598                 return NULL;
3599
3600         spin_lock_irqsave(&phba->ndlp_lock, flags);
3601         /* The ndlp should not be in memory free mode */
3602         if (NLP_CHK_FREE_REQ(ndlp)) {
3603                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3604                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3605                                 "0277 lpfc_enable_node: ndlp:x%p "
3606                                 "usgmap:x%x refcnt:%d\n",
3607                                 (void *)ndlp, ndlp->nlp_usg_map,
3608                                 atomic_read(&ndlp->kref.refcount));
3609                 return NULL;
3610         }
3611         /* The ndlp should not already be in active mode */
3612         if (NLP_CHK_NODE_ACT(ndlp)) {
3613                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3614                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3615                                 "0278 lpfc_enable_node: ndlp:x%p "
3616                                 "usgmap:x%x refcnt:%d\n",
3617                                 (void *)ndlp, ndlp->nlp_usg_map,
3618                                 atomic_read(&ndlp->kref.refcount));
3619                 return NULL;
3620         }
3621
3622         /* Keep the original DID */
3623         did = ndlp->nlp_DID;
3624
3625         /* re-initialize ndlp except of ndlp linked list pointer */
3626         memset((((char *)ndlp) + sizeof (struct list_head)), 0,
3627                 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
3628         lpfc_initialize_node(vport, ndlp, did);
3629
3630         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3631
3632         if (state != NLP_STE_UNUSED_NODE)
3633                 lpfc_nlp_set_state(vport, ndlp, state);
3634
3635         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
3636                 "node enable:       did:x%x",
3637                 ndlp->nlp_DID, 0, 0);
3638         return ndlp;
3639 }
3640
3641 void
3642 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3643 {
3644         /*
3645          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
3646          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
3647          * the ndlp from the vport. The ndlp marked as UNUSED on the list
3648          * until ALL other outstanding threads have completed. We check
3649          * that the ndlp not already in the UNUSED state before we proceed.
3650          */
3651         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
3652                 return;
3653         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
3654         lpfc_nlp_put(ndlp);
3655         return;
3656 }
3657
3658 /*
3659  * Start / ReStart rescue timer for Discovery / RSCN handling
3660  */
3661 void
3662 lpfc_set_disctmo(struct lpfc_vport *vport)
3663 {
3664         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3665         struct lpfc_hba  *phba = vport->phba;
3666         uint32_t tmo;
3667
3668         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
3669                 /* For FAN, timeout should be greater than edtov */
3670                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
3671         } else {
3672                 /* Normal discovery timeout should be > than ELS/CT timeout
3673                  * FC spec states we need 3 * ratov for CT requests
3674                  */
3675                 tmo = ((phba->fc_ratov * 3) + 3);
3676         }
3677
3678
3679         if (!timer_pending(&vport->fc_disctmo)) {
3680                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3681                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
3682                         tmo, vport->port_state, vport->fc_flag);
3683         }
3684
3685         mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
3686         spin_lock_irq(shost->host_lock);
3687         vport->fc_flag |= FC_DISC_TMO;
3688         spin_unlock_irq(shost->host_lock);
3689
3690         /* Start Discovery Timer state <hba_state> */
3691         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3692                          "0247 Start Discovery Timer state x%x "
3693                          "Data: x%x x%lx x%x x%x\n",
3694                          vport->port_state, tmo,
3695                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
3696                          vport->fc_adisc_cnt);
3697
3698         return;
3699 }
3700
3701 /*
3702  * Cancel rescue timer for Discovery / RSCN handling
3703  */
3704 int
3705 lpfc_can_disctmo(struct lpfc_vport *vport)
3706 {
3707         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3708         unsigned long iflags;
3709
3710         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3711                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
3712                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
3713
3714         /* Turn off discovery timer if its running */
3715         if (vport->fc_flag & FC_DISC_TMO) {
3716                 spin_lock_irqsave(shost->host_lock, iflags);
3717                 vport->fc_flag &= ~FC_DISC_TMO;
3718                 spin_unlock_irqrestore(shost->host_lock, iflags);
3719                 del_timer_sync(&vport->fc_disctmo);
3720                 spin_lock_irqsave(&vport->work_port_lock, iflags);
3721                 vport->work_port_events &= ~WORKER_DISC_TMO;
3722                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
3723         }
3724
3725         /* Cancel Discovery Timer state <hba_state> */
3726         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3727                          "0248 Cancel Discovery Timer state x%x "
3728                          "Data: x%x x%x x%x\n",
3729                          vport->port_state, vport->fc_flag,
3730                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
3731         return 0;
3732 }
3733
3734 /*
3735  * Check specified ring for outstanding IOCB on the SLI queue
3736  * Return true if iocb matches the specified nport
3737  */
3738 int
3739 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
3740                     struct lpfc_sli_ring *pring,
3741                     struct lpfc_iocbq *iocb,
3742                     struct lpfc_nodelist *ndlp)
3743 {
3744         struct lpfc_sli *psli = &phba->sli;
3745         IOCB_t *icmd = &iocb->iocb;
3746         struct lpfc_vport    *vport = ndlp->vport;
3747
3748         if (iocb->vport != vport)
3749                 return 0;
3750
3751         if (pring->ringno == LPFC_ELS_RING) {
3752                 switch (icmd->ulpCommand) {
3753                 case CMD_GEN_REQUEST64_CR:
3754                         if (iocb->context_un.ndlp == ndlp)
3755                                 return 1;
3756                 case CMD_ELS_REQUEST64_CR:
3757                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
3758                                 return 1;
3759                 case CMD_XMIT_ELS_RSP64_CX:
3760                         if (iocb->context1 == (uint8_t *) ndlp)
3761                                 return 1;
3762                 }
3763         } else if (pring->ringno == psli->extra_ring) {
3764
3765         } else if (pring->ringno == psli->fcp_ring) {
3766                 /* Skip match check if waiting to relogin to FCP target */
3767                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
3768                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
3769                         return 0;
3770                 }
3771                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
3772                         return 1;
3773                 }
3774         } else if (pring->ringno == psli->next_ring) {
3775
3776         }
3777         return 0;
3778 }
3779
3780 /*
3781  * Free resources / clean up outstanding I/Os
3782  * associated with nlp_rpi in the LPFC_NODELIST entry.
3783  */
3784 static int
3785 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
3786 {
3787         LIST_HEAD(completions);
3788         struct lpfc_sli *psli;
3789         struct lpfc_sli_ring *pring;
3790         struct lpfc_iocbq *iocb, *next_iocb;
3791         uint32_t i;
3792
3793         lpfc_fabric_abort_nport(ndlp);
3794
3795         /*
3796          * Everything that matches on txcmplq will be returned
3797          * by firmware with a no rpi error.
3798          */
3799         psli = &phba->sli;
3800         if (ndlp->nlp_flag & NLP_RPI_VALID) {
3801                 /* Now process each ring */
3802                 for (i = 0; i < psli->num_rings; i++) {
3803                         pring = &psli->ring[i];
3804
3805                         spin_lock_irq(&phba->hbalock);
3806                         list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
3807                                                  list) {
3808                                 /*
3809                                  * Check to see if iocb matches the nport we are
3810                                  * looking for
3811                                  */
3812                                 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
3813                                                          ndlp))) {
3814                                         /* It matches, so deque and call compl
3815                                            with an error */
3816                                         list_move_tail(&iocb->list,
3817                                                        &completions);
3818                                         pring->txq_cnt--;
3819                                 }
3820                         }
3821                         spin_unlock_irq(&phba->hbalock);
3822                 }
3823         }
3824
3825         /* Cancel all the IOCBs from the completions list */
3826         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
3827                               IOERR_SLI_ABORTED);
3828
3829         return 0;
3830 }
3831
3832 /*
3833  * Free rpi associated with LPFC_NODELIST entry.
3834  * This routine is called from lpfc_freenode(), when we are removing
3835  * a LPFC_NODELIST entry. It is also called if the driver initiates a
3836  * LOGO that completes successfully, and we are waiting to PLOGI back
3837  * to the remote NPort. In addition, it is called after we receive
3838  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
3839  * we are waiting to PLOGI back to the remote NPort.
3840  */
3841 int
3842 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3843 {
3844         struct lpfc_hba *phba = vport->phba;
3845         LPFC_MBOXQ_t    *mbox;
3846         int rc;
3847
3848         if (ndlp->nlp_flag & NLP_RPI_VALID) {
3849                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3850                 if (mbox) {
3851                         lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
3852                         mbox->vport = vport;
3853                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3854                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3855                         if (rc == MBX_NOT_FINISHED)
3856                                 mempool_free(mbox, phba->mbox_mem_pool);
3857                 }
3858                 lpfc_no_rpi(phba, ndlp);
3859
3860                 ndlp->nlp_rpi = 0;
3861                 ndlp->nlp_flag &= ~NLP_RPI_VALID;
3862                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
3863                 return 1;
3864         }
3865         return 0;
3866 }
3867
3868 /**
3869  * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
3870  * @phba: pointer to lpfc hba data structure.
3871  *
3872  * This routine is invoked to unregister all the currently registered RPIs
3873  * to the HBA.
3874  **/
3875 void
3876 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
3877 {
3878         struct lpfc_vport **vports;
3879         struct lpfc_nodelist *ndlp;
3880         struct Scsi_Host *shost;
3881         int i;
3882
3883         vports = lpfc_create_vport_work_array(phba);
3884         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3885                 shost = lpfc_shost_from_vport(vports[i]);
3886                 spin_lock_irq(shost->host_lock);
3887                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
3888                         if (ndlp->nlp_flag & NLP_RPI_VALID) {
3889                                 /* The mempool_alloc might sleep */
3890                                 spin_unlock_irq(shost->host_lock);
3891                                 lpfc_unreg_rpi(vports[i], ndlp);
3892                                 spin_lock_irq(shost->host_lock);
3893                         }
3894                 }
3895                 spin_unlock_irq(shost->host_lock);
3896         }
3897         lpfc_destroy_vport_work_array(phba, vports);
3898 }
3899
3900 void
3901 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
3902 {
3903         struct lpfc_hba  *phba  = vport->phba;
3904         LPFC_MBOXQ_t     *mbox;
3905         int rc;
3906
3907         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3908         if (mbox) {
3909                 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
3910                 mbox->vport = vport;
3911                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3912                 mbox->context1 = NULL;
3913                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
3914                 if (rc != MBX_TIMEOUT)
3915                         mempool_free(mbox, phba->mbox_mem_pool);
3916
3917                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
3918                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
3919                                 "1836 Could not issue "
3920                                 "unreg_login(all_rpis) status %d\n", rc);
3921         }
3922 }
3923
3924 void
3925 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
3926 {
3927         struct lpfc_hba  *phba  = vport->phba;
3928         LPFC_MBOXQ_t     *mbox;
3929         int rc;
3930
3931         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3932         if (mbox) {
3933                 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
3934                 mbox->vport = vport;
3935                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3936                 mbox->context1 = NULL;
3937                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
3938                 if (rc != MBX_TIMEOUT)
3939                         mempool_free(mbox, phba->mbox_mem_pool);
3940
3941                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
3942                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
3943                                          "1815 Could not issue "
3944                                          "unreg_did (default rpis) status %d\n",
3945                                          rc);
3946         }
3947 }
3948
3949 /*
3950  * Free resources associated with LPFC_NODELIST entry
3951  * so it can be freed.
3952  */
3953 static int
3954 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3955 {
3956         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3957         struct lpfc_hba  *phba = vport->phba;
3958         LPFC_MBOXQ_t *mb, *nextmb;
3959         struct lpfc_dmabuf *mp;
3960
3961         /* Cleanup node for NPort <nlp_DID> */
3962         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3963                          "0900 Cleanup node for NPort x%x "
3964                          "Data: x%x x%x x%x\n",
3965                          ndlp->nlp_DID, ndlp->nlp_flag,
3966                          ndlp->nlp_state, ndlp->nlp_rpi);
3967         if (NLP_CHK_FREE_REQ(ndlp)) {
3968                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3969                                 "0280 lpfc_cleanup_node: ndlp:x%p "
3970                                 "usgmap:x%x refcnt:%d\n",
3971                                 (void *)ndlp, ndlp->nlp_usg_map,
3972                                 atomic_read(&ndlp->kref.refcount));
3973                 lpfc_dequeue_node(vport, ndlp);
3974         } else {
3975                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3976                                 "0281 lpfc_cleanup_node: ndlp:x%p "
3977                                 "usgmap:x%x refcnt:%d\n",
3978                                 (void *)ndlp, ndlp->nlp_usg_map,
3979                                 atomic_read(&ndlp->kref.refcount));
3980                 lpfc_disable_node(vport, ndlp);
3981         }
3982
3983         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
3984         if ((mb = phba->sli.mbox_active)) {
3985                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
3986                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
3987                         mb->context2 = NULL;
3988                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3989                 }
3990         }
3991
3992         spin_lock_irq(&phba->hbalock);
3993         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
3994                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
3995                     (ndlp == (struct lpfc_nodelist *) mb->context2)) {
3996                         mp = (struct lpfc_dmabuf *) (mb->context1);
3997                         if (mp) {
3998                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
3999                                 kfree(mp);
4000                         }
4001                         list_del(&mb->list);
4002                         if (phba->sli_rev == LPFC_SLI_REV4)
4003                                 lpfc_sli4_free_rpi(phba,
4004                                          mb->u.mb.un.varRegLogin.rpi);
4005                         mempool_free(mb, phba->mbox_mem_pool);
4006                         /* We shall not invoke the lpfc_nlp_put to decrement
4007                          * the ndlp reference count as we are in the process
4008                          * of lpfc_nlp_release.
4009                          */
4010                 }
4011         }
4012         spin_unlock_irq(&phba->hbalock);
4013
4014         lpfc_els_abort(phba, ndlp);
4015
4016         spin_lock_irq(shost->host_lock);
4017         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
4018         spin_unlock_irq(shost->host_lock);
4019
4020         ndlp->nlp_last_elscmd = 0;
4021         del_timer_sync(&ndlp->nlp_delayfunc);
4022
4023         list_del_init(&ndlp->els_retry_evt.evt_listp);
4024         list_del_init(&ndlp->dev_loss_evt.evt_listp);
4025
4026         lpfc_unreg_rpi(vport, ndlp);
4027
4028         return 0;
4029 }
4030
4031 /*
4032  * Check to see if we can free the nlp back to the freelist.
4033  * If we are in the middle of using the nlp in the discovery state
4034  * machine, defer the free till we reach the end of the state machine.
4035  */
4036 static void
4037 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4038 {
4039         struct lpfc_hba  *phba = vport->phba;
4040         struct lpfc_rport_data *rdata;
4041         LPFC_MBOXQ_t *mbox;
4042         int rc;
4043
4044         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4045         if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
4046                 !(ndlp->nlp_flag & NLP_REG_LOGIN_SEND) &&
4047             !(ndlp->nlp_flag & NLP_RPI_VALID)) {
4048                 /* For this case we need to cleanup the default rpi
4049                  * allocated by the firmware.
4050                  */
4051                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
4052                         != NULL) {
4053                         rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID,
4054                             (uint8_t *) &vport->fc_sparam, mbox, 0);
4055                         if (rc) {
4056                                 mempool_free(mbox, phba->mbox_mem_pool);
4057                         }
4058                         else {
4059                                 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
4060                                 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
4061                                 mbox->vport = vport;
4062                                 mbox->context2 = NULL;
4063                                 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4064                                 if (rc == MBX_NOT_FINISHED) {
4065                                         mempool_free(mbox, phba->mbox_mem_pool);
4066                                 }
4067                         }
4068                 }
4069         }
4070         lpfc_cleanup_node(vport, ndlp);
4071
4072         /*
4073          * We can get here with a non-NULL ndlp->rport because when we
4074          * unregister a rport we don't break the rport/node linkage.  So if we
4075          * do, make sure we don't leaving any dangling pointers behind.
4076          */
4077         if (ndlp->rport) {
4078                 rdata = ndlp->rport->dd_data;
4079                 rdata->pnode = NULL;
4080                 ndlp->rport = NULL;
4081         }
4082 }
4083
4084 static int
4085 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4086               uint32_t did)
4087 {
4088         D_ID mydid, ndlpdid, matchdid;
4089
4090         if (did == Bcast_DID)
4091                 return 0;
4092
4093         /* First check for Direct match */
4094         if (ndlp->nlp_DID == did)
4095                 return 1;
4096
4097         /* Next check for area/domain identically equals 0 match */
4098         mydid.un.word = vport->fc_myDID;
4099         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
4100                 return 0;
4101         }
4102
4103         matchdid.un.word = did;
4104         ndlpdid.un.word = ndlp->nlp_DID;
4105         if (matchdid.un.b.id == ndlpdid.un.b.id) {
4106                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
4107                     (mydid.un.b.area == matchdid.un.b.area)) {
4108                         if ((ndlpdid.un.b.domain == 0) &&
4109                             (ndlpdid.un.b.area == 0)) {
4110                                 if (ndlpdid.un.b.id)
4111                                         return 1;
4112                         }
4113                         return 0;
4114                 }
4115
4116                 matchdid.un.word = ndlp->nlp_DID;
4117                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
4118                     (mydid.un.b.area == ndlpdid.un.b.area)) {
4119                         if ((matchdid.un.b.domain == 0) &&
4120                             (matchdid.un.b.area == 0)) {
4121                                 if (matchdid.un.b.id)
4122                                         return 1;
4123                         }
4124                 }
4125         }
4126         return 0;
4127 }
4128
4129 /* Search for a nodelist entry */
4130 static struct lpfc_nodelist *
4131 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
4132 {
4133         struct lpfc_nodelist *ndlp;
4134         uint32_t data1;
4135
4136         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4137                 if (lpfc_matchdid(vport, ndlp, did)) {
4138                         data1 = (((uint32_t) ndlp->nlp_state << 24) |
4139                                  ((uint32_t) ndlp->nlp_xri << 16) |
4140                                  ((uint32_t) ndlp->nlp_type << 8) |
4141                                  ((uint32_t) ndlp->nlp_rpi & 0xff));
4142                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4143                                          "0929 FIND node DID "
4144                                          "Data: x%p x%x x%x x%x\n",
4145                                          ndlp, ndlp->nlp_DID,
4146                                          ndlp->nlp_flag, data1);
4147                         return ndlp;
4148                 }
4149         }
4150
4151         /* FIND node did <did> NOT FOUND */
4152         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4153                          "0932 FIND node did x%x NOT FOUND.\n", did);
4154         return NULL;
4155 }
4156
4157 struct lpfc_nodelist *
4158 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
4159 {
4160         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4161         struct lpfc_nodelist *ndlp;
4162
4163         spin_lock_irq(shost->host_lock);
4164         ndlp = __lpfc_findnode_did(vport, did);
4165         spin_unlock_irq(shost->host_lock);
4166         return ndlp;
4167 }
4168
4169 struct lpfc_nodelist *
4170 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
4171 {
4172         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4173         struct lpfc_nodelist *ndlp;
4174
4175         ndlp = lpfc_findnode_did(vport, did);
4176         if (!ndlp) {
4177                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
4178                     lpfc_rscn_payload_check(vport, did) == 0)
4179                         return NULL;
4180                 ndlp = (struct lpfc_nodelist *)
4181                      mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
4182                 if (!ndlp)
4183                         return NULL;
4184                 lpfc_nlp_init(vport, ndlp, did);
4185                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
4186                 spin_lock_irq(shost->host_lock);
4187                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4188                 spin_unlock_irq(shost->host_lock);
4189                 return ndlp;
4190         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
4191                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
4192                 if (!ndlp)
4193                         return NULL;
4194                 spin_lock_irq(shost->host_lock);
4195                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4196                 spin_unlock_irq(shost->host_lock);
4197                 return ndlp;
4198         }
4199
4200         if ((vport->fc_flag & FC_RSCN_MODE) &&
4201             !(vport->fc_flag & FC_NDISC_ACTIVE)) {
4202                 if (lpfc_rscn_payload_check(vport, did)) {
4203                         /* If we've already recieved a PLOGI from this NPort
4204                          * we don't need to try to discover it again.
4205                          */
4206                         if (ndlp->nlp_flag & NLP_RCV_PLOGI)
4207                                 return NULL;
4208
4209                         /* Since this node is marked for discovery,
4210                          * delay timeout is not needed.
4211                          */
4212                         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4213                         spin_lock_irq(shost->host_lock);
4214                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4215                         spin_unlock_irq(shost->host_lock);
4216                 } else
4217                         ndlp = NULL;
4218         } else {
4219                 /* If we've already recieved a PLOGI from this NPort,
4220                  * or we are already in the process of discovery on it,
4221                  * we don't need to try to discover it again.
4222                  */
4223                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
4224                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
4225                     ndlp->nlp_flag & NLP_RCV_PLOGI)
4226                         return NULL;
4227                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
4228                 spin_lock_irq(shost->host_lock);
4229                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4230                 spin_unlock_irq(shost->host_lock);
4231         }
4232         return ndlp;
4233 }
4234
4235 /* Build a list of nodes to discover based on the loopmap */
4236 void
4237 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
4238 {
4239         struct lpfc_hba  *phba = vport->phba;
4240         int j;
4241         uint32_t alpa, index;
4242
4243         if (!lpfc_is_link_up(phba))
4244                 return;
4245
4246         if (phba->fc_topology != TOPOLOGY_LOOP)
4247                 return;
4248
4249         /* Check for loop map present or not */
4250         if (phba->alpa_map[0]) {
4251                 for (j = 1; j <= phba->alpa_map[0]; j++) {
4252                         alpa = phba->alpa_map[j];
4253                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
4254                                 continue;
4255                         lpfc_setup_disc_node(vport, alpa);
4256                 }
4257         } else {
4258                 /* No alpamap, so try all alpa's */
4259                 for (j = 0; j < FC_MAXLOOP; j++) {
4260                         /* If cfg_scan_down is set, start from highest
4261                          * ALPA (0xef) to lowest (0x1).
4262                          */
4263                         if (vport->cfg_scan_down)
4264                                 index = j;
4265                         else
4266                                 index = FC_MAXLOOP - j - 1;
4267                         alpa = lpfcAlpaArray[index];
4268                         if ((vport->fc_myDID & 0xff) == alpa)
4269                                 continue;
4270                         lpfc_setup_disc_node(vport, alpa);
4271                 }
4272         }
4273         return;
4274 }
4275
4276 void
4277 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
4278 {
4279         LPFC_MBOXQ_t *mbox;
4280         struct lpfc_sli *psli = &phba->sli;
4281         struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
4282         struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
4283         struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
4284         int  rc;
4285
4286         /*
4287          * if it's not a physical port or if we already send
4288          * clear_la then don't send it.
4289          */
4290         if ((phba->link_state >= LPFC_CLEAR_LA) ||
4291             (vport->port_type != LPFC_PHYSICAL_PORT) ||
4292                 (phba->sli_rev == LPFC_SLI_REV4))
4293                 return;
4294
4295                         /* Link up discovery */
4296         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
4297                 phba->link_state = LPFC_CLEAR_LA;
4298                 lpfc_clear_la(phba, mbox);
4299                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
4300                 mbox->vport = vport;
4301                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4302                 if (rc == MBX_NOT_FINISHED) {
4303                         mempool_free(mbox, phba->mbox_mem_pool);
4304                         lpfc_disc_flush_list(vport);
4305                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4306                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4307                         next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4308                         phba->link_state = LPFC_HBA_ERROR;
4309                 }
4310         }
4311 }
4312
4313 /* Reg_vpi to tell firmware to resume normal operations */
4314 void
4315 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
4316 {
4317         LPFC_MBOXQ_t *regvpimbox;
4318
4319         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4320         if (regvpimbox) {
4321                 lpfc_reg_vpi(vport, regvpimbox);
4322                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
4323                 regvpimbox->vport = vport;
4324                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
4325                                         == MBX_NOT_FINISHED) {
4326                         mempool_free(regvpimbox, phba->mbox_mem_pool);
4327                 }
4328         }
4329 }
4330
4331 /* Start Link up / RSCN discovery on NPR nodes */
4332 void
4333 lpfc_disc_start(struct lpfc_vport *vport)
4334 {
4335         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4336         struct lpfc_hba  *phba = vport->phba;
4337         uint32_t num_sent;
4338         uint32_t clear_la_pending;
4339         int did_changed;
4340
4341         if (!lpfc_is_link_up(phba))
4342                 return;
4343
4344         if (phba->link_state == LPFC_CLEAR_LA)
4345                 clear_la_pending = 1;
4346         else
4347                 clear_la_pending = 0;
4348
4349         if (vport->port_state < LPFC_VPORT_READY)
4350                 vport->port_state = LPFC_DISC_AUTH;
4351
4352         lpfc_set_disctmo(vport);
4353
4354         if (vport->fc_prevDID == vport->fc_myDID)
4355                 did_changed = 0;
4356         else
4357                 did_changed = 1;
4358
4359         vport->fc_prevDID = vport->fc_myDID;
4360         vport->num_disc_nodes = 0;
4361
4362         /* Start Discovery state <hba_state> */
4363         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4364                          "0202 Start Discovery hba state x%x "
4365                          "Data: x%x x%x x%x\n",
4366                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
4367                          vport->fc_adisc_cnt);
4368
4369         /* First do ADISCs - if any */
4370         num_sent = lpfc_els_disc_adisc(vport);
4371
4372         if (num_sent)
4373                 return;
4374
4375         /*
4376          * For SLI3, cmpl_reg_vpi will set port_state to READY, and
4377          * continue discovery.
4378          */
4379         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
4380             !(vport->fc_flag & FC_PT2PT) &&
4381             !(vport->fc_flag & FC_RSCN_MODE) &&
4382             (phba->sli_rev < LPFC_SLI_REV4)) {
4383                 lpfc_issue_reg_vpi(phba, vport);
4384                 return;
4385         }
4386
4387         /*
4388          * For SLI2, we need to set port_state to READY and continue
4389          * discovery.
4390          */
4391         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
4392                 /* If we get here, there is nothing to ADISC */
4393                 if (vport->port_type == LPFC_PHYSICAL_PORT)
4394                         lpfc_issue_clear_la(phba, vport);
4395
4396                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
4397                         vport->num_disc_nodes = 0;
4398                         /* go thru NPR nodes and issue ELS PLOGIs */
4399                         if (vport->fc_npr_cnt)
4400                                 lpfc_els_disc_plogi(vport);
4401
4402                         if (!vport->num_disc_nodes) {
4403                                 spin_lock_irq(shost->host_lock);
4404                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
4405                                 spin_unlock_irq(shost->host_lock);
4406                                 lpfc_can_disctmo(vport);
4407                         }
4408                 }
4409                 vport->port_state = LPFC_VPORT_READY;
4410         } else {
4411                 /* Next do PLOGIs - if any */
4412                 num_sent = lpfc_els_disc_plogi(vport);
4413
4414                 if (num_sent)
4415                         return;
4416
4417                 if (vport->fc_flag & FC_RSCN_MODE) {
4418                         /* Check to see if more RSCNs came in while we
4419                          * were processing this one.
4420                          */
4421                         if ((vport->fc_rscn_id_cnt == 0) &&
4422                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
4423                                 spin_lock_irq(shost->host_lock);
4424                                 vport->fc_flag &= ~FC_RSCN_MODE;
4425                                 spin_unlock_irq(shost->host_lock);
4426                                 lpfc_can_disctmo(vport);
4427                         } else
4428                                 lpfc_els_handle_rscn(vport);
4429                 }
4430         }
4431         return;
4432 }
4433
4434 /*
4435  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
4436  *  ring the match the sppecified nodelist.
4437  */
4438 static void
4439 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
4440 {
4441         LIST_HEAD(completions);
4442         struct lpfc_sli *psli;
4443         IOCB_t     *icmd;
4444         struct lpfc_iocbq    *iocb, *next_iocb;
4445         struct lpfc_sli_ring *pring;
4446
4447         psli = &phba->sli;
4448         pring = &psli->ring[LPFC_ELS_RING];
4449
4450         /* Error matching iocb on txq or txcmplq
4451          * First check the txq.
4452          */
4453         spin_lock_irq(&phba->hbalock);
4454         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
4455                 if (iocb->context1 != ndlp) {
4456                         continue;
4457                 }
4458                 icmd = &iocb->iocb;
4459                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
4460                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
4461
4462                         list_move_tail(&iocb->list, &completions);
4463                         pring->txq_cnt--;
4464                 }
4465         }
4466
4467         /* Next check the txcmplq */
4468         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
4469                 if (iocb->context1 != ndlp) {
4470                         continue;
4471                 }
4472                 icmd = &iocb->iocb;
4473                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
4474                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
4475                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
4476                 }
4477         }
4478         spin_unlock_irq(&phba->hbalock);
4479
4480         /* Cancel all the IOCBs from the completions list */
4481         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
4482                               IOERR_SLI_ABORTED);
4483 }
4484
4485 static void
4486 lpfc_disc_flush_list(struct lpfc_vport *vport)
4487 {
4488         struct lpfc_nodelist *ndlp, *next_ndlp;
4489         struct lpfc_hba *phba = vport->phba;
4490
4491         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
4492                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
4493                                          nlp_listp) {
4494                         if (!NLP_CHK_NODE_ACT(ndlp))
4495                                 continue;
4496                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
4497                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
4498                                 lpfc_free_tx(phba, ndlp);
4499                         }
4500                 }
4501         }
4502 }
4503
4504 void
4505 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
4506 {
4507         lpfc_els_flush_rscn(vport);
4508         lpfc_els_flush_cmd(vport);
4509         lpfc_disc_flush_list(vport);
4510 }
4511
4512 /*****************************************************************************/
4513 /*
4514  * NAME:     lpfc_disc_timeout
4515  *
4516  * FUNCTION: Fibre Channel driver discovery timeout routine.
4517  *
4518  * EXECUTION ENVIRONMENT: interrupt only
4519  *
4520  * CALLED FROM:
4521  *      Timer function
4522  *
4523  * RETURNS:
4524  *      none
4525  */
4526 /*****************************************************************************/
4527 void
4528 lpfc_disc_timeout(unsigned long ptr)
4529 {
4530         struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
4531         struct lpfc_hba   *phba = vport->phba;
4532         uint32_t tmo_posted;
4533         unsigned long flags = 0;
4534
4535         if (unlikely(!phba))
4536                 return;
4537
4538         spin_lock_irqsave(&vport->work_port_lock, flags);
4539         tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
4540         if (!tmo_posted)
4541                 vport->work_port_events |= WORKER_DISC_TMO;
4542         spin_unlock_irqrestore(&vport->work_port_lock, flags);
4543
4544         if (!tmo_posted)
4545                 lpfc_worker_wake_up(phba);
4546         return;
4547 }
4548
4549 static void
4550 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
4551 {
4552         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4553         struct lpfc_hba  *phba = vport->phba;
4554         struct lpfc_sli  *psli = &phba->sli;
4555         struct lpfc_nodelist *ndlp, *next_ndlp;
4556         LPFC_MBOXQ_t *initlinkmbox;
4557         int rc, clrlaerr = 0;
4558
4559         if (!(vport->fc_flag & FC_DISC_TMO))
4560                 return;
4561
4562         spin_lock_irq(shost->host_lock);
4563         vport->fc_flag &= ~FC_DISC_TMO;
4564         spin_unlock_irq(shost->host_lock);
4565
4566         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4567                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
4568                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
4569
4570         switch (vport->port_state) {
4571
4572         case LPFC_LOCAL_CFG_LINK:
4573         /* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
4574          * FAN
4575          */
4576                                 /* FAN timeout */
4577                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
4578                                  "0221 FAN timeout\n");
4579                 /* Start discovery by sending FLOGI, clean up old rpis */
4580                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
4581                                          nlp_listp) {
4582                         if (!NLP_CHK_NODE_ACT(ndlp))
4583                                 continue;
4584                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
4585                                 continue;
4586                         if (ndlp->nlp_type & NLP_FABRIC) {
4587                                 /* Clean up the ndlp on Fabric connections */
4588                                 lpfc_drop_node(vport, ndlp);
4589
4590                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
4591                                 /* Fail outstanding IO now since device
4592                                  * is marked for PLOGI.
4593                                  */
4594                                 lpfc_unreg_rpi(vport, ndlp);
4595                         }
4596                 }
4597                 if (vport->port_state != LPFC_FLOGI) {
4598                         lpfc_initial_flogi(vport);
4599                         return;
4600                 }
4601                 break;
4602
4603         case LPFC_FDISC:
4604         case LPFC_FLOGI:
4605         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
4606                 /* Initial FLOGI timeout */
4607                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4608                                  "0222 Initial %s timeout\n",
4609                                  vport->vpi ? "FDISC" : "FLOGI");
4610
4611                 /* Assume no Fabric and go on with discovery.
4612                  * Check for outstanding ELS FLOGI to abort.
4613                  */
4614
4615                 /* FLOGI failed, so just use loop map to make discovery list */
4616                 lpfc_disc_list_loopmap(vport);
4617
4618                 /* Start discovery */
4619                 lpfc_disc_start(vport);
4620                 break;
4621
4622         case LPFC_FABRIC_CFG_LINK:
4623         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
4624            NameServer login */
4625                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4626                                  "0223 Timeout while waiting for "
4627                                  "NameServer login\n");
4628                 /* Next look for NameServer ndlp */
4629                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
4630                 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
4631                         lpfc_els_abort(phba, ndlp);
4632
4633                 /* ReStart discovery */
4634                 goto restart_disc;
4635
4636         case LPFC_NS_QRY:
4637         /* Check for wait for NameServer Rsp timeout */
4638                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4639                                  "0224 NameServer Query timeout "
4640                                  "Data: x%x x%x\n",
4641                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
4642
4643                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
4644                         /* Try it one more time */
4645                         vport->fc_ns_retry++;
4646                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
4647                                          vport->fc_ns_retry, 0);
4648                         if (rc == 0)
4649                                 break;
4650                 }
4651                 vport->fc_ns_retry = 0;
4652
4653 restart_disc:
4654                 /*
4655                  * Discovery is over.
4656                  * set port_state to PORT_READY if SLI2.
4657                  * cmpl_reg_vpi will set port_state to READY for SLI3.
4658                  */
4659                 if (phba->sli_rev < LPFC_SLI_REV4) {
4660                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
4661                                 lpfc_issue_reg_vpi(phba, vport);
4662                         else  { /* NPIV Not enabled */
4663                                 lpfc_issue_clear_la(phba, vport);
4664                                 vport->port_state = LPFC_VPORT_READY;
4665                         }
4666                 }
4667
4668                 /* Setup and issue mailbox INITIALIZE LINK command */
4669                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4670                 if (!initlinkmbox) {
4671                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4672                                          "0206 Device Discovery "
4673                                          "completion error\n");
4674                         phba->link_state = LPFC_HBA_ERROR;
4675                         break;
4676                 }
4677
4678                 lpfc_linkdown(phba);
4679                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
4680                                phba->cfg_link_speed);
4681                 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
4682                 initlinkmbox->vport = vport;
4683                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4684                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
4685                 lpfc_set_loopback_flag(phba);
4686                 if (rc == MBX_NOT_FINISHED)
4687                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
4688
4689                 break;
4690
4691         case LPFC_DISC_AUTH:
4692         /* Node Authentication timeout */
4693                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4694                                  "0227 Node Authentication timeout\n");
4695                 lpfc_disc_flush_list(vport);
4696
4697                 /*
4698                  * set port_state to PORT_READY if SLI2.
4699                  * cmpl_reg_vpi will set port_state to READY for SLI3.
4700                  */
4701                 if (phba->sli_rev < LPFC_SLI_REV4) {
4702                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
4703                                 lpfc_issue_reg_vpi(phba, vport);
4704                         else  { /* NPIV Not enabled */
4705                                 lpfc_issue_clear_la(phba, vport);
4706                                 vport->port_state = LPFC_VPORT_READY;
4707                         }
4708                 }
4709                 break;
4710
4711         case LPFC_VPORT_READY:
4712                 if (vport->fc_flag & FC_RSCN_MODE) {
4713                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4714                                          "0231 RSCN timeout Data: x%x "
4715                                          "x%x\n",
4716                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
4717
4718                         /* Cleanup any outstanding ELS commands */
4719                         lpfc_els_flush_cmd(vport);
4720
4721                         lpfc_els_flush_rscn(vport);
4722                         lpfc_disc_flush_list(vport);
4723                 }
4724                 break;
4725
4726         default:
4727                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4728                                  "0273 Unexpected discovery timeout, "
4729                                  "vport State x%x\n", vport->port_state);
4730                 break;
4731         }
4732
4733         switch (phba->link_state) {
4734         case LPFC_CLEAR_LA:
4735                                 /* CLEAR LA timeout */
4736                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4737                                  "0228 CLEAR LA timeout\n");
4738                 clrlaerr = 1;
4739                 break;
4740
4741         case LPFC_LINK_UP:
4742                 lpfc_issue_clear_la(phba, vport);
4743                 /* Drop thru */
4744         case LPFC_LINK_UNKNOWN:
4745         case LPFC_WARM_START:
4746         case LPFC_INIT_START:
4747         case LPFC_INIT_MBX_CMDS:
4748         case LPFC_LINK_DOWN:
4749         case LPFC_HBA_ERROR:
4750                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4751                                  "0230 Unexpected timeout, hba link "
4752                                  "state x%x\n", phba->link_state);
4753                 clrlaerr = 1;
4754                 break;
4755
4756         case LPFC_HBA_READY:
4757                 break;
4758         }
4759
4760         if (clrlaerr) {
4761                 lpfc_disc_flush_list(vport);
4762                 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
4763                 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
4764                 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
4765                 vport->port_state = LPFC_VPORT_READY;
4766         }
4767
4768         return;
4769 }
4770
4771 /*
4772  * This routine handles processing a NameServer REG_LOGIN mailbox
4773  * command upon completion. It is setup in the LPFC_MBOXQ
4774  * as the completion routine when the command is
4775  * handed off to the SLI layer.
4776  */
4777 void
4778 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4779 {
4780         MAILBOX_t *mb = &pmb->u.mb;
4781         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
4782         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
4783         struct lpfc_vport    *vport = pmb->vport;
4784
4785         pmb->context1 = NULL;
4786
4787         ndlp->nlp_rpi = mb->un.varWords[0];
4788         ndlp->nlp_flag |= NLP_RPI_VALID;
4789         ndlp->nlp_type |= NLP_FABRIC;
4790         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4791
4792         /*
4793          * Start issuing Fabric-Device Management Interface (FDMI) command to
4794          * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
4795          * fdmi-on=2 (supporting RPA/hostnmae)
4796          */
4797
4798         if (vport->cfg_fdmi_on == 1)
4799                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
4800         else
4801                 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
4802
4803         /* decrement the node reference count held for this callback
4804          * function.
4805          */
4806         lpfc_nlp_put(ndlp);
4807         lpfc_mbuf_free(phba, mp->virt, mp->phys);
4808         kfree(mp);
4809         mempool_free(pmb, phba->mbox_mem_pool);
4810
4811         return;
4812 }
4813
4814 static int
4815 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
4816 {
4817         uint16_t *rpi = param;
4818
4819         return ndlp->nlp_rpi == *rpi;
4820 }
4821
4822 static int
4823 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
4824 {
4825         return memcmp(&ndlp->nlp_portname, param,
4826                       sizeof(ndlp->nlp_portname)) == 0;
4827 }
4828
4829 static struct lpfc_nodelist *
4830 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
4831 {
4832         struct lpfc_nodelist *ndlp;
4833
4834         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4835                 if (filter(ndlp, param))
4836                         return ndlp;
4837         }
4838         return NULL;
4839 }
4840
4841 /*
4842  * This routine looks up the ndlp lists for the given RPI. If rpi found it
4843  * returns the node list element pointer else return NULL.
4844  */
4845 struct lpfc_nodelist *
4846 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
4847 {
4848         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
4849 }
4850
4851 /*
4852  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
4853  * returns the node element list pointer else return NULL.
4854  */
4855 struct lpfc_nodelist *
4856 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
4857 {
4858         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4859         struct lpfc_nodelist *ndlp;
4860
4861         spin_lock_irq(shost->host_lock);
4862         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
4863         spin_unlock_irq(shost->host_lock);
4864         return ndlp;
4865 }
4866
4867 void
4868 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4869               uint32_t did)
4870 {
4871         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
4872
4873         lpfc_initialize_node(vport, ndlp, did);
4874         INIT_LIST_HEAD(&ndlp->nlp_listp);
4875
4876         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4877                 "node init:       did:x%x",
4878                 ndlp->nlp_DID, 0, 0);
4879
4880         return;
4881 }
4882
4883 /* This routine releases all resources associated with a specifc NPort's ndlp
4884  * and mempool_free's the nodelist.
4885  */
4886 static void
4887 lpfc_nlp_release(struct kref *kref)
4888 {
4889         struct lpfc_hba *phba;
4890         unsigned long flags;
4891         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
4892                                                   kref);
4893
4894         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4895                 "node release:    did:x%x flg:x%x type:x%x",
4896                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4897
4898         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
4899                         "0279 lpfc_nlp_release: ndlp:x%p "
4900                         "usgmap:x%x refcnt:%d\n",
4901                         (void *)ndlp, ndlp->nlp_usg_map,
4902                         atomic_read(&ndlp->kref.refcount));
4903
4904         /* remove ndlp from action. */
4905         lpfc_nlp_remove(ndlp->vport, ndlp);
4906
4907         /* clear the ndlp active flag for all release cases */
4908         phba = ndlp->phba;
4909         spin_lock_irqsave(&phba->ndlp_lock, flags);
4910         NLP_CLR_NODE_ACT(ndlp);
4911         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4912
4913         /* free ndlp memory for final ndlp release */
4914         if (NLP_CHK_FREE_REQ(ndlp)) {
4915                 kfree(ndlp->lat_data);
4916                 mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
4917         }
4918 }
4919
4920 /* This routine bumps the reference count for a ndlp structure to ensure
4921  * that one discovery thread won't free a ndlp while another discovery thread
4922  * is using it.
4923  */
4924 struct lpfc_nodelist *
4925 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
4926 {
4927         struct lpfc_hba *phba;
4928         unsigned long flags;
4929
4930         if (ndlp) {
4931                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4932                         "node get:        did:x%x flg:x%x refcnt:x%x",
4933                         ndlp->nlp_DID, ndlp->nlp_flag,
4934                         atomic_read(&ndlp->kref.refcount));
4935                 /* The check of ndlp usage to prevent incrementing the
4936                  * ndlp reference count that is in the process of being
4937                  * released.
4938                  */
4939                 phba = ndlp->phba;
4940                 spin_lock_irqsave(&phba->ndlp_lock, flags);
4941                 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
4942                         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4943                         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
4944                                 "0276 lpfc_nlp_get: ndlp:x%p "
4945                                 "usgmap:x%x refcnt:%d\n",
4946                                 (void *)ndlp, ndlp->nlp_usg_map,
4947                                 atomic_read(&ndlp->kref.refcount));
4948                         return NULL;
4949                 } else
4950                         kref_get(&ndlp->kref);
4951                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4952         }
4953         return ndlp;
4954 }
4955
4956 /* This routine decrements the reference count for a ndlp structure. If the
4957  * count goes to 0, this indicates the the associated nodelist should be
4958  * freed. Returning 1 indicates the ndlp resource has been released; on the
4959  * other hand, returning 0 indicates the ndlp resource has not been released
4960  * yet.
4961  */
4962 int
4963 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
4964 {
4965         struct lpfc_hba *phba;
4966         unsigned long flags;
4967
4968         if (!ndlp)
4969                 return 1;
4970
4971         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4972         "node put:        did:x%x flg:x%x refcnt:x%x",
4973                 ndlp->nlp_DID, ndlp->nlp_flag,
4974                 atomic_read(&ndlp->kref.refcount));
4975         phba = ndlp->phba;
4976         spin_lock_irqsave(&phba->ndlp_lock, flags);
4977         /* Check the ndlp memory free acknowledge flag to avoid the
4978          * possible race condition that kref_put got invoked again
4979          * after previous one has done ndlp memory free.
4980          */
4981         if (NLP_CHK_FREE_ACK(ndlp)) {
4982                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4983                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
4984                                 "0274 lpfc_nlp_put: ndlp:x%p "
4985                                 "usgmap:x%x refcnt:%d\n",
4986                                 (void *)ndlp, ndlp->nlp_usg_map,
4987                                 atomic_read(&ndlp->kref.refcount));
4988                 return 1;
4989         }
4990         /* Check the ndlp inactivate log flag to avoid the possible
4991          * race condition that kref_put got invoked again after ndlp
4992          * is already in inactivating state.
4993          */
4994         if (NLP_CHK_IACT_REQ(ndlp)) {
4995                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4996                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
4997                                 "0275 lpfc_nlp_put: ndlp:x%p "
4998                                 "usgmap:x%x refcnt:%d\n",
4999                                 (void *)ndlp, ndlp->nlp_usg_map,
5000                                 atomic_read(&ndlp->kref.refcount));
5001                 return 1;
5002         }
5003         /* For last put, mark the ndlp usage flags to make sure no
5004          * other kref_get and kref_put on the same ndlp shall get
5005          * in between the process when the final kref_put has been
5006          * invoked on this ndlp.
5007          */
5008         if (atomic_read(&ndlp->kref.refcount) == 1) {
5009                 /* Indicate ndlp is put to inactive state. */
5010                 NLP_SET_IACT_REQ(ndlp);
5011                 /* Acknowledge ndlp memory free has been seen. */
5012                 if (NLP_CHK_FREE_REQ(ndlp))
5013                         NLP_SET_FREE_ACK(ndlp);
5014         }
5015         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5016         /* Note, the kref_put returns 1 when decrementing a reference
5017          * count that was 1, it invokes the release callback function,
5018          * but it still left the reference count as 1 (not actually
5019          * performs the last decrementation). Otherwise, it actually
5020          * decrements the reference count and returns 0.
5021          */
5022         return kref_put(&ndlp->kref, lpfc_nlp_release);
5023 }
5024
5025 /* This routine free's the specified nodelist if it is not in use
5026  * by any other discovery thread. This routine returns 1 if the
5027  * ndlp has been freed. A return value of 0 indicates the ndlp is
5028  * not yet been released.
5029  */
5030 int
5031 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
5032 {
5033         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5034                 "node not used:   did:x%x flg:x%x refcnt:x%x",
5035                 ndlp->nlp_DID, ndlp->nlp_flag,
5036                 atomic_read(&ndlp->kref.refcount));
5037         if (atomic_read(&ndlp->kref.refcount) == 1)
5038                 if (lpfc_nlp_put(ndlp))
5039                         return 1;
5040         return 0;
5041 }
5042
5043 /**
5044  * lpfc_fcf_inuse - Check if FCF can be unregistered.
5045  * @phba: Pointer to hba context object.
5046  *
5047  * This function iterate through all FC nodes associated
5048  * will all vports to check if there is any node with
5049  * fc_rports associated with it. If there is an fc_rport
5050  * associated with the node, then the node is either in
5051  * discovered state or its devloss_timer is pending.
5052  */
5053 static int
5054 lpfc_fcf_inuse(struct lpfc_hba *phba)
5055 {
5056         struct lpfc_vport **vports;
5057         int i, ret = 0;
5058         struct lpfc_nodelist *ndlp;
5059         struct Scsi_Host  *shost;
5060
5061         vports = lpfc_create_vport_work_array(phba);
5062
5063         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5064                 shost = lpfc_shost_from_vport(vports[i]);
5065                 spin_lock_irq(shost->host_lock);
5066                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
5067                         if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport &&
5068                           (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
5069                                 ret = 1;
5070                                 spin_unlock_irq(shost->host_lock);
5071                                 goto out;
5072                         } else {
5073                                 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
5074                                         "2624 RPI %x DID %x flg %x still "
5075                                         "logged in\n",
5076                                         ndlp->nlp_rpi, ndlp->nlp_DID,
5077                                         ndlp->nlp_flag);
5078                                 if (ndlp->nlp_flag & NLP_RPI_VALID)
5079                                         ret = 1;
5080                         }
5081                 }
5082                 spin_unlock_irq(shost->host_lock);
5083         }
5084 out:
5085         lpfc_destroy_vport_work_array(phba, vports);
5086         return ret;
5087 }
5088
5089 /**
5090  * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
5091  * @phba: Pointer to hba context object.
5092  * @mboxq: Pointer to mailbox object.
5093  *
5094  * This function frees memory associated with the mailbox command.
5095  */
5096 static void
5097 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
5098 {
5099         struct lpfc_vport *vport = mboxq->vport;
5100
5101         if (mboxq->u.mb.mbxStatus) {
5102                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5103                         "2555 UNREG_VFI mbxStatus error x%x "
5104                         "HBA state x%x\n",
5105                         mboxq->u.mb.mbxStatus, vport->port_state);
5106         }
5107         mempool_free(mboxq, phba->mbox_mem_pool);
5108         return;
5109 }
5110
5111 /**
5112  * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
5113  * @phba: Pointer to hba context object.
5114  * @mboxq: Pointer to mailbox object.
5115  *
5116  * This function frees memory associated with the mailbox command.
5117  */
5118 static void
5119 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
5120 {
5121         struct lpfc_vport *vport = mboxq->vport;
5122
5123         if (mboxq->u.mb.mbxStatus) {
5124                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5125                         "2550 UNREG_FCFI mbxStatus error x%x "
5126                         "HBA state x%x\n",
5127                         mboxq->u.mb.mbxStatus, vport->port_state);
5128         }
5129         mempool_free(mboxq, phba->mbox_mem_pool);
5130         return;
5131 }
5132
5133 /**
5134  * lpfc_unregister_fcf_prep - Unregister fcf record preparation
5135  * @phba: Pointer to hba context object.
5136  *
5137  * This function prepare the HBA for unregistering the currently registered
5138  * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
5139  * VFIs.
5140  */
5141 int
5142 lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
5143 {
5144         LPFC_MBOXQ_t *mbox;
5145         struct lpfc_vport **vports;
5146         struct lpfc_nodelist *ndlp;
5147         struct Scsi_Host *shost;
5148         int i, rc;
5149
5150         /* Unregister RPIs */
5151         if (lpfc_fcf_inuse(phba))
5152                 lpfc_unreg_hba_rpis(phba);
5153
5154         /* At this point, all discovery is aborted */
5155         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
5156
5157         /* Unregister VPIs */
5158         vports = lpfc_create_vport_work_array(phba);
5159         if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
5160                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5161                         /* Stop FLOGI/FDISC retries */
5162                         ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
5163                         if (ndlp)
5164                                 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
5165                         lpfc_cleanup_pending_mbox(vports[i]);
5166                         lpfc_mbx_unreg_vpi(vports[i]);
5167                         shost = lpfc_shost_from_vport(vports[i]);
5168                         spin_lock_irq(shost->host_lock);
5169                         vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
5170                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
5171                         spin_unlock_irq(shost->host_lock);
5172                 }
5173         lpfc_destroy_vport_work_array(phba, vports);
5174
5175         /* Cleanup any outstanding ELS commands */
5176         lpfc_els_flush_all_cmd(phba);
5177
5178         /* Unregister VFI */
5179         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5180         if (!mbox) {
5181                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5182                                 "2556 UNREG_VFI mbox allocation failed"
5183                                 "HBA state x%x\n", phba->pport->port_state);
5184                 return -ENOMEM;
5185         }
5186
5187         lpfc_unreg_vfi(mbox, phba->pport);
5188         mbox->vport = phba->pport;
5189         mbox->mbox_cmpl = lpfc_unregister_vfi_cmpl;
5190
5191         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5192         if (rc == MBX_NOT_FINISHED) {
5193                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5194                                 "2557 UNREG_VFI issue mbox failed rc x%x "
5195                                 "HBA state x%x\n",
5196                                 rc, phba->pport->port_state);
5197                 mempool_free(mbox, phba->mbox_mem_pool);
5198                 return -EIO;
5199         }
5200
5201         shost = lpfc_shost_from_vport(phba->pport);
5202         spin_lock_irq(shost->host_lock);
5203         phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
5204         spin_unlock_irq(shost->host_lock);
5205
5206         return 0;
5207 }
5208
5209 /**
5210  * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
5211  * @phba: Pointer to hba context object.
5212  *
5213  * This function issues synchronous unregister FCF mailbox command to HBA to
5214  * unregister the currently registered FCF record. The driver does not reset
5215  * the driver FCF usage state flags.
5216  *
5217  * Return 0 if successfully issued, none-zero otherwise.
5218  */
5219 int
5220 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
5221 {
5222         LPFC_MBOXQ_t *mbox;
5223         int rc;
5224
5225         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5226         if (!mbox) {
5227                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5228                                 "2551 UNREG_FCFI mbox allocation failed"
5229                                 "HBA state x%x\n", phba->pport->port_state);
5230                 return -ENOMEM;
5231         }
5232         lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
5233         mbox->vport = phba->pport;
5234         mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
5235         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5236
5237         if (rc == MBX_NOT_FINISHED) {
5238                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5239                                 "2552 Unregister FCFI command failed rc x%x "
5240                                 "HBA state x%x\n",
5241                                 rc, phba->pport->port_state);
5242                 return -EINVAL;
5243         }
5244         return 0;
5245 }
5246
5247 /**
5248  * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
5249  * @phba: Pointer to hba context object.
5250  *
5251  * This function unregisters the currently reigstered FCF. This function
5252  * also tries to find another FCF for discovery by rescan the HBA FCF table.
5253  */
5254 void
5255 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
5256 {
5257         int rc;
5258
5259         /* Preparation for unregistering fcf */
5260         rc = lpfc_unregister_fcf_prep(phba);
5261         if (rc) {
5262                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
5263                                 "2748 Failed to prepare for unregistering "
5264                                 "HBA's FCF record: rc=%d\n", rc);
5265                 return;
5266         }
5267
5268         /* Now, unregister FCF record and reset HBA FCF state */
5269         rc = lpfc_sli4_unregister_fcf(phba);
5270         if (rc)
5271                 return;
5272         /* Reset HBA FCF states after successful unregister FCF */
5273         phba->fcf.fcf_flag = 0;
5274         phba->fcf.current_rec.flag = 0;
5275
5276         /*
5277          * If driver is not unloading, check if there is any other
5278          * FCF record that can be used for discovery.
5279          */
5280         if ((phba->pport->load_flag & FC_UNLOADING) ||
5281             (phba->link_state < LPFC_LINK_UP))
5282                 return;
5283
5284         /* This is considered as the initial FCF discovery scan */
5285         spin_lock_irq(&phba->hbalock);
5286         phba->fcf.fcf_flag |= FCF_INIT_DISC;
5287         spin_unlock_irq(&phba->hbalock);
5288         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
5289
5290         if (rc) {
5291                 spin_lock_irq(&phba->hbalock);
5292                 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
5293                 spin_unlock_irq(&phba->hbalock);
5294                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5295                                 "2553 lpfc_unregister_unused_fcf failed "
5296                                 "to read FCF record HBA state x%x\n",
5297                                 phba->pport->port_state);
5298         }
5299 }
5300
5301 /**
5302  * lpfc_unregister_fcf - Unregister the currently registered fcf record
5303  * @phba: Pointer to hba context object.
5304  *
5305  * This function just unregisters the currently reigstered FCF. It does not
5306  * try to find another FCF for discovery.
5307  */
5308 void
5309 lpfc_unregister_fcf(struct lpfc_hba *phba)
5310 {
5311         int rc;
5312
5313         /* Preparation for unregistering fcf */
5314         rc = lpfc_unregister_fcf_prep(phba);
5315         if (rc) {
5316                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
5317                                 "2749 Failed to prepare for unregistering "
5318                                 "HBA's FCF record: rc=%d\n", rc);
5319                 return;
5320         }
5321
5322         /* Now, unregister FCF record and reset HBA FCF state */
5323         rc = lpfc_sli4_unregister_fcf(phba);
5324         if (rc)
5325                 return;
5326         /* Set proper HBA FCF states after successful unregister FCF */
5327         spin_lock_irq(&phba->hbalock);
5328         phba->fcf.fcf_flag &= ~FCF_REGISTERED;
5329         spin_unlock_irq(&phba->hbalock);
5330 }
5331
5332 /**
5333  * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
5334  * @phba: Pointer to hba context object.
5335  *
5336  * This function check if there are any connected remote port for the FCF and
5337  * if all the devices are disconnected, this function unregister FCFI.
5338  * This function also tries to use another FCF for discovery.
5339  */
5340 void
5341 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
5342 {
5343         /*
5344          * If HBA is not running in FIP mode, if HBA does not support
5345          * FCoE, if FCF discovery is ongoing, or if FCF has not been
5346          * registered, do nothing.
5347          */
5348         spin_lock_irq(&phba->hbalock);
5349         if (!(phba->hba_flag & HBA_FCOE_SUPPORT) ||
5350             !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
5351             !(phba->hba_flag & HBA_FIP_SUPPORT) ||
5352             (phba->fcf.fcf_flag & FCF_DISCOVERY) ||
5353             (phba->pport->port_state == LPFC_FLOGI)) {
5354                 spin_unlock_irq(&phba->hbalock);
5355                 return;
5356         }
5357         spin_unlock_irq(&phba->hbalock);
5358
5359         if (lpfc_fcf_inuse(phba))
5360                 return;
5361
5362         lpfc_unregister_fcf_rescan(phba);
5363 }
5364
5365 /**
5366  * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
5367  * @phba: Pointer to hba context object.
5368  * @buff: Buffer containing the FCF connection table as in the config
5369  *         region.
5370  * This function create driver data structure for the FCF connection
5371  * record table read from config region 23.
5372  */
5373 static void
5374 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
5375         uint8_t *buff)
5376 {
5377         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
5378         struct lpfc_fcf_conn_hdr *conn_hdr;
5379         struct lpfc_fcf_conn_rec *conn_rec;
5380         uint32_t record_count;
5381         int i;
5382
5383         /* Free the current connect table */
5384         list_for_each_entry_safe(conn_entry, next_conn_entry,
5385                 &phba->fcf_conn_rec_list, list) {
5386                 list_del_init(&conn_entry->list);
5387                 kfree(conn_entry);
5388         }
5389
5390         conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
5391         record_count = conn_hdr->length * sizeof(uint32_t)/
5392                 sizeof(struct lpfc_fcf_conn_rec);
5393
5394         conn_rec = (struct lpfc_fcf_conn_rec *)
5395                 (buff + sizeof(struct lpfc_fcf_conn_hdr));
5396
5397         for (i = 0; i < record_count; i++) {
5398                 if (!(conn_rec[i].flags & FCFCNCT_VALID))
5399                         continue;
5400                 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
5401                         GFP_KERNEL);
5402                 if (!conn_entry) {
5403                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5404                                 "2566 Failed to allocate connection"
5405                                 " table entry\n");
5406                         return;
5407                 }
5408
5409                 memcpy(&conn_entry->conn_rec, &conn_rec[i],
5410                         sizeof(struct lpfc_fcf_conn_rec));
5411                 conn_entry->conn_rec.vlan_tag =
5412                         le16_to_cpu(conn_entry->conn_rec.vlan_tag) & 0xFFF;
5413                 conn_entry->conn_rec.flags =
5414                         le16_to_cpu(conn_entry->conn_rec.flags);
5415                 list_add_tail(&conn_entry->list,
5416                         &phba->fcf_conn_rec_list);
5417         }
5418 }
5419
5420 /**
5421  * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
5422  * @phba: Pointer to hba context object.
5423  * @buff: Buffer containing the FCoE parameter data structure.
5424  *
5425  *  This function update driver data structure with config
5426  *  parameters read from config region 23.
5427  */
5428 static void
5429 lpfc_read_fcoe_param(struct lpfc_hba *phba,
5430                         uint8_t *buff)
5431 {
5432         struct lpfc_fip_param_hdr *fcoe_param_hdr;
5433         struct lpfc_fcoe_params *fcoe_param;
5434
5435         fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
5436                 buff;
5437         fcoe_param = (struct lpfc_fcoe_params *)
5438                 (buff + sizeof(struct lpfc_fip_param_hdr));
5439
5440         if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
5441                 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
5442                 return;
5443
5444         if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
5445                 phba->valid_vlan = 1;
5446                 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
5447                         0xFFF;
5448         }
5449
5450         phba->fc_map[0] = fcoe_param->fc_map[0];
5451         phba->fc_map[1] = fcoe_param->fc_map[1];
5452         phba->fc_map[2] = fcoe_param->fc_map[2];
5453         return;
5454 }
5455
5456 /**
5457  * lpfc_get_rec_conf23 - Get a record type in config region data.
5458  * @buff: Buffer containing config region 23 data.
5459  * @size: Size of the data buffer.
5460  * @rec_type: Record type to be searched.
5461  *
5462  * This function searches config region data to find the begining
5463  * of the record specified by record_type. If record found, this
5464  * function return pointer to the record else return NULL.
5465  */
5466 static uint8_t *
5467 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
5468 {
5469         uint32_t offset = 0, rec_length;
5470
5471         if ((buff[0] == LPFC_REGION23_LAST_REC) ||
5472                 (size < sizeof(uint32_t)))
5473                 return NULL;
5474
5475         rec_length = buff[offset + 1];
5476
5477         /*
5478          * One TLV record has one word header and number of data words
5479          * specified in the rec_length field of the record header.
5480          */
5481         while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
5482                 <= size) {
5483                 if (buff[offset] == rec_type)
5484                         return &buff[offset];
5485
5486                 if (buff[offset] == LPFC_REGION23_LAST_REC)
5487                         return NULL;
5488
5489                 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
5490                 rec_length = buff[offset + 1];
5491         }
5492         return NULL;
5493 }
5494
5495 /**
5496  * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
5497  * @phba: Pointer to lpfc_hba data structure.
5498  * @buff: Buffer containing config region 23 data.
5499  * @size: Size of the data buffer.
5500  *
5501  * This fuction parse the FCoE config parameters in config region 23 and
5502  * populate driver data structure with the parameters.
5503  */
5504 void
5505 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
5506                 uint8_t *buff,
5507                 uint32_t size)
5508 {
5509         uint32_t offset = 0, rec_length;
5510         uint8_t *rec_ptr;
5511
5512         /*
5513          * If data size is less than 2 words signature and version cannot be
5514          * verified.
5515          */
5516         if (size < 2*sizeof(uint32_t))
5517                 return;
5518
5519         /* Check the region signature first */
5520         if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
5521                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5522                         "2567 Config region 23 has bad signature\n");
5523                 return;
5524         }
5525
5526         offset += 4;
5527
5528         /* Check the data structure version */
5529         if (buff[offset] != LPFC_REGION23_VERSION) {
5530                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5531                         "2568 Config region 23 has bad version\n");
5532                 return;
5533         }
5534         offset += 4;
5535
5536         rec_length = buff[offset + 1];
5537
5538         /* Read FCoE param record */
5539         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
5540                         size - offset, FCOE_PARAM_TYPE);
5541         if (rec_ptr)
5542                 lpfc_read_fcoe_param(phba, rec_ptr);
5543
5544         /* Read FCF connection table */
5545         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
5546                 size - offset, FCOE_CONN_TBL_TYPE);
5547         if (rec_ptr)
5548                 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
5549
5550 }