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/pci.h>
  24 #include <linux/kthread.h>
  25 #include <linux/interrupt.h>
  26
  27 #include <scsi/scsi.h>
  28 #include <scsi/scsi_device.h>
  29 #include <scsi/scsi_host.h>
  30 #include <scsi/scsi_transport_fc.h>
  31
  32 #include "lpfc_hw4.h"
  33 #include "lpfc_hw.h"
  34 #include "lpfc_nl.h"
  35 #include "lpfc_disc.h"
  36 #include "lpfc_sli.h"
  37 #include "lpfc_sli4.h"
  38 #include "lpfc_scsi.h"
  39 #include "lpfc.h"
  40 #include "lpfc_logmsg.h"
  41 #include "lpfc_crtn.h"
  42 #include "lpfc_vport.h"
  43 #include "lpfc_debugfs.h"
  44
  45 /* AlpaArray for assignment of scsid for scan-down and bind_method */
  46 static uint8_t lpfcAlpaArray[] = {
  47         0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
  48         0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
  49         0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
  50         0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
  51         0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
  52         0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
  53         0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
  54         0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
  55         0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
  56         0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
  57         0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
  58         0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
  59         0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
  60 };
  61
  62 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
  63 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
  64 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
  65
  66 void
  67 lpfc_terminate_rport_io(struct fc_rport *rport)
  68 {
  69         struct lpfc_rport_data *rdata;
  70         struct lpfc_nodelist * ndlp;
  71         struct lpfc_hba *phba;
  72
  73         rdata = rport->dd_data;
  74         ndlp = rdata->pnode;
  75
  76         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
  77                 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
  78                         printk(KERN_ERR "Cannot find remote node"
  79                         " to terminate I/O Data x%x\n",
  80                         rport->port_id);
  81                 return;
  82         }
  83
  84         phba  = ndlp->phba;
  85
  86         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
  87                 "rport terminate: sid:x%x did:x%x flg:x%x",
  88                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
  89
  90         if (ndlp->nlp_sid != NLP_NO_SID) {
  91                 lpfc_sli_abort_iocb(ndlp->vport,
  92                         &phba->sli.ring[phba->sli.fcp_ring],
  93                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
  94         }
  95 }
  96
  97 /*
  98  * This function will be called when dev_loss_tmo fire.
  99  */
 100 void
 101 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
 102 {
 103         struct lpfc_rport_data *rdata;
 104         struct lpfc_nodelist * ndlp;
 105         struct lpfc_vport *vport;
 106         struct lpfc_hba   *phba;
 107         struct lpfc_work_evt *evtp;
 108         int  put_node;
 109         int  put_rport;
 110
 111         rdata = rport->dd_data;
 112         ndlp = rdata->pnode;
 113         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
 114                 return;
 115
 116         vport = ndlp->vport;
 117         phba  = vport->phba;
 118
 119         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 120                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
 121                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 122
 123         /* Don't defer this if we are in the process of deleting the vport
 124          * or unloading the driver. The unload will cleanup the node
 125          * appropriately we just need to cleanup the ndlp rport info here.
 126          */
 127         if (vport->load_flag & FC_UNLOADING) {
 128                 put_node = rdata->pnode != NULL;
 129                 put_rport = ndlp->rport != NULL;
 130                 rdata->pnode = NULL;
 131                 ndlp->rport = NULL;
 132                 if (put_node)
 133                         lpfc_nlp_put(ndlp);
 134                 if (put_rport)
 135                         put_device(&rport->dev);
 136                 return;
 137         }
 138
 139         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 140                 return;
 141
 142         evtp = &ndlp->dev_loss_evt;
 143
 144         if (!list_empty(&evtp->evt_listp))
 145                 return;
 146
 147         spin_lock_irq(&phba->hbalock);
 148         /* We need to hold the node by incrementing the reference
 149          * count until this queued work is done
 150          */
 151         evtp->evt_arg1  = lpfc_nlp_get(ndlp);
 152         if (evtp->evt_arg1) {
 153                 evtp->evt = LPFC_EVT_DEV_LOSS;
 154                 list_add_tail(&evtp->evt_listp, &phba->work_list);
 155                 lpfc_worker_wake_up(phba);
 156         }
 157         spin_unlock_irq(&phba->hbalock);
 158
 159         return;
 160 }
 161
 162 /*
 163  * This function is called from the worker thread when dev_loss_tmo
 164  * expire.
 165  */
 166 static void
 167 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 168 {
 169         struct lpfc_rport_data *rdata;
 170         struct fc_rport   *rport;
 171         struct lpfc_vport *vport;
 172         struct lpfc_hba   *phba;
 173         uint8_t *name;
 174         int  put_node;
 175         int  put_rport;
 176         int warn_on = 0;
 177
 178         rport = ndlp->rport;
 179
 180         if (!rport)
 181                 return;
 182
 183         rdata = rport->dd_data;
 184         name = (uint8_t *) &ndlp->nlp_portname;
 185         vport = ndlp->vport;
 186         phba  = vport->phba;
 187
 188         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 189                 "rport devlosstmo:did:x%x type:x%x id:x%x",
 190                 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
 191
 192         /* Don't defer this if we are in the process of deleting the vport
 193          * or unloading the driver. The unload will cleanup the node
 194          * appropriately we just need to cleanup the ndlp rport info here.
 195          */
 196         if (vport->load_flag & FC_UNLOADING) {
 197                 if (ndlp->nlp_sid != NLP_NO_SID) {
 198                         /* flush the target */
 199                         lpfc_sli_abort_iocb(vport,
 200                                         &phba->sli.ring[phba->sli.fcp_ring],
 201                                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 202                 }
 203                 put_node = rdata->pnode != NULL;
 204                 put_rport = ndlp->rport != NULL;
 205                 rdata->pnode = NULL;
 206                 ndlp->rport = NULL;
 207                 if (put_node)
 208                         lpfc_nlp_put(ndlp);
 209                 if (put_rport)
 210                         put_device(&rport->dev);
 211                 return;
 212         }
 213
 214         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
 215                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 216                                  "0284 Devloss timeout Ignored on "
 217                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 218                                  "NPort x%x\n",
 219                                  *name, *(name+1), *(name+2), *(name+3),
 220                                  *(name+4), *(name+5), *(name+6), *(name+7),
 221                                  ndlp->nlp_DID);
 222                 return;
 223         }
 224
 225         if (ndlp->nlp_type & NLP_FABRIC) {
 226                 /* We will clean up these Nodes in linkup */
 227                 put_node = rdata->pnode != NULL;
 228                 put_rport = ndlp->rport != NULL;
 229                 rdata->pnode = NULL;
 230                 ndlp->rport = NULL;
 231                 if (put_node)
 232                         lpfc_nlp_put(ndlp);
 233                 if (put_rport)
 234                         put_device(&rport->dev);
 235                 return;
 236         }
 237
 238         if (ndlp->nlp_sid != NLP_NO_SID) {
 239                 warn_on = 1;
 240                 /* flush the target */
 241                 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
 242                                     ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 243         }
 244
 245         if (warn_on) {
 246                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 247                                  "0203 Devloss timeout on "
 248                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 249                                  "NPort x%06x Data: x%x x%x x%x\n",
 250                                  *name, *(name+1), *(name+2), *(name+3),
 251                                  *(name+4), *(name+5), *(name+6), *(name+7),
 252                                  ndlp->nlp_DID, ndlp->nlp_flag,
 253                                  ndlp->nlp_state, ndlp->nlp_rpi);
 254         } else {
 255                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 256                                  "0204 Devloss timeout on "
 257                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 258                                  "NPort x%06x Data: x%x x%x x%x\n",
 259                                  *name, *(name+1), *(name+2), *(name+3),
 260                                  *(name+4), *(name+5), *(name+6), *(name+7),
 261                                  ndlp->nlp_DID, ndlp->nlp_flag,
 262                                  ndlp->nlp_state, ndlp->nlp_rpi);
 263         }
 264
 265         put_node = rdata->pnode != NULL;
 266         put_rport = ndlp->rport != NULL;
 267         rdata->pnode = NULL;
 268         ndlp->rport = NULL;
 269         if (put_node)
 270                 lpfc_nlp_put(ndlp);
 271         if (put_rport)
 272                 put_device(&rport->dev);
 273
 274         if (!(vport->load_flag & FC_UNLOADING) &&
 275             !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
 276             !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 277             (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE))
 278                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 279
 280         lpfc_unregister_unused_fcf(phba);
 281 }
 282
 283 /**
 284  * lpfc_alloc_fast_evt - Allocates data structure for posting event
 285  * @phba: Pointer to hba context object.
 286  *
 287  * This function is called from the functions which need to post
 288  * events from interrupt context. This function allocates data
 289  * structure required for posting event. It also keeps track of
 290  * number of events pending and prevent event storm when there are
 291  * too many events.
 292  **/
 293 struct lpfc_fast_path_event *
 294 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
 295         struct lpfc_fast_path_event *ret;
 296
 297         /* If there are lot of fast event do not exhaust memory due to this */
 298         if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
 299                 return NULL;
 300
 301         ret = kzalloc(sizeof(struct lpfc_fast_path_event),
 302                         GFP_ATOMIC);
 303         if (ret) {
 304                 atomic_inc(&phba->fast_event_count);
 305                 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
 306                 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
 307         }
 308         return ret;
 309 }
 310
 311 /**
 312  * lpfc_free_fast_evt - Frees event data structure
 313  * @phba: Pointer to hba context object.
 314  * @evt:  Event object which need to be freed.
 315  *
 316  * This function frees the data structure required for posting
 317  * events.
 318  **/
 319 void
 320 lpfc_free_fast_evt(struct lpfc_hba *phba,
 321                 struct lpfc_fast_path_event *evt) {
 322
 323         atomic_dec(&phba->fast_event_count);
 324         kfree(evt);
 325 }
 326
 327 /**
 328  * lpfc_send_fastpath_evt - Posts events generated from fast path
 329  * @phba: Pointer to hba context object.
 330  * @evtp: Event data structure.
 331  *
 332  * This function is called from worker thread, when the interrupt
 333  * context need to post an event. This function posts the event
 334  * to fc transport netlink interface.
 335  **/
 336 static void
 337 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
 338                 struct lpfc_work_evt *evtp)
 339 {
 340         unsigned long evt_category, evt_sub_category;
 341         struct lpfc_fast_path_event *fast_evt_data;
 342         char *evt_data;
 343         uint32_t evt_data_size;
 344         struct Scsi_Host *shost;
 345
 346         fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
 347                 work_evt);
 348
 349         evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
 350         evt_sub_category = (unsigned long) fast_evt_data->un.
 351                         fabric_evt.subcategory;
 352         shost = lpfc_shost_from_vport(fast_evt_data->vport);
 353         if (evt_category == FC_REG_FABRIC_EVENT) {
 354                 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
 355                         evt_data = (char *) &fast_evt_data->un.read_check_error;
 356                         evt_data_size = sizeof(fast_evt_data->un.
 357                                 read_check_error);
 358                 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
 359                         (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
 360                         evt_data = (char *) &fast_evt_data->un.fabric_evt;
 361                         evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
 362                 } else {
 363                         lpfc_free_fast_evt(phba, fast_evt_data);
 364                         return;
 365                 }
 366         } else if (evt_category == FC_REG_SCSI_EVENT) {
 367                 switch (evt_sub_category) {
 368                 case LPFC_EVENT_QFULL:
 369                 case LPFC_EVENT_DEVBSY:
 370                         evt_data = (char *) &fast_evt_data->un.scsi_evt;
 371                         evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
 372                         break;
 373                 case LPFC_EVENT_CHECK_COND:
 374                         evt_data = (char *) &fast_evt_data->un.check_cond_evt;
 375                         evt_data_size =  sizeof(fast_evt_data->un.
 376                                 check_cond_evt);
 377                         break;
 378                 case LPFC_EVENT_VARQUEDEPTH:
 379                         evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
 380                         evt_data_size = sizeof(fast_evt_data->un.
 381                                 queue_depth_evt);
 382                         break;
 383                 default:
 384                         lpfc_free_fast_evt(phba, fast_evt_data);
 385                         return;
 386                 }
 387         } else {
 388                 lpfc_free_fast_evt(phba, fast_evt_data);
 389                 return;
 390         }
 391
 392         fc_host_post_vendor_event(shost,
 393                 fc_get_event_number(),
 394                 evt_data_size,
 395                 evt_data,
 396                 LPFC_NL_VENDOR_ID);
 397
 398         lpfc_free_fast_evt(phba, fast_evt_data);
 399         return;
 400 }
 401
 402 static void
 403 lpfc_work_list_done(struct lpfc_hba *phba)
 404 {
 405         struct lpfc_work_evt  *evtp = NULL;
 406         struct lpfc_nodelist  *ndlp;
 407         int free_evt;
 408
 409         spin_lock_irq(&phba->hbalock);
 410         while (!list_empty(&phba->work_list)) {
 411                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 412                                  evt_listp);
 413                 spin_unlock_irq(&phba->hbalock);
 414                 free_evt = 1;
 415                 switch (evtp->evt) {
 416                 case LPFC_EVT_ELS_RETRY:
 417                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 418                         lpfc_els_retry_delay_handler(ndlp);
 419                         free_evt = 0; /* evt is part of ndlp */
 420                         /* decrement the node reference count held
 421                          * for this queued work
 422                          */
 423                         lpfc_nlp_put(ndlp);
 424                         break;
 425                 case LPFC_EVT_DEV_LOSS:
 426                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 427                         lpfc_dev_loss_tmo_handler(ndlp);
 428                         free_evt = 0;
 429                         /* decrement the node reference count held for
 430                          * this queued work
 431                          */
 432                         lpfc_nlp_put(ndlp);
 433                         break;
 434                 case LPFC_EVT_ONLINE:
 435                         if (phba->link_state < LPFC_LINK_DOWN)
 436                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 437                         else
 438                                 *(int *) (evtp->evt_arg1) = 0;
 439                         complete((struct completion *)(evtp->evt_arg2));
 440                         break;
 441                 case LPFC_EVT_OFFLINE_PREP:
 442                         if (phba->link_state >= LPFC_LINK_DOWN)
 443                                 lpfc_offline_prep(phba);
 444                         *(int *)(evtp->evt_arg1) = 0;
 445                         complete((struct completion *)(evtp->evt_arg2));
 446                         break;
 447                 case LPFC_EVT_OFFLINE:
 448                         lpfc_offline(phba);
 449                         lpfc_sli_brdrestart(phba);
 450                         *(int *)(evtp->evt_arg1) =
 451                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 452                         lpfc_unblock_mgmt_io(phba);
 453                         complete((struct completion *)(evtp->evt_arg2));
 454                         break;
 455                 case LPFC_EVT_WARM_START:
 456                         lpfc_offline(phba);
 457                         lpfc_reset_barrier(phba);
 458                         lpfc_sli_brdreset(phba);
 459                         lpfc_hba_down_post(phba);
 460                         *(int *)(evtp->evt_arg1) =
 461                                 lpfc_sli_brdready(phba, HS_MBRDY);
 462                         lpfc_unblock_mgmt_io(phba);
 463                         complete((struct completion *)(evtp->evt_arg2));
 464                         break;
 465                 case LPFC_EVT_KILL:
 466                         lpfc_offline(phba);
 467                         *(int *)(evtp->evt_arg1)
 468                                 = (phba->pport->stopped)
 469                                         ? 0 : lpfc_sli_brdkill(phba);
 470                         lpfc_unblock_mgmt_io(phba);
 471                         complete((struct completion *)(evtp->evt_arg2));
 472                         break;
 473                 case LPFC_EVT_FASTPATH_MGMT_EVT:
 474                         lpfc_send_fastpath_evt(phba, evtp);
 475                         free_evt = 0;
 476                         break;
 477                 }
 478                 if (free_evt)
 479                         kfree(evtp);
 480                 spin_lock_irq(&phba->hbalock);
 481         }
 482         spin_unlock_irq(&phba->hbalock);
 483
 484 }
 485
 486 static void
 487 lpfc_work_done(struct lpfc_hba *phba)
 488 {
 489         struct lpfc_sli_ring *pring;
 490         uint32_t ha_copy, status, control, work_port_events;
 491         struct lpfc_vport **vports;
 492         struct lpfc_vport *vport;
 493         int i;
 494
 495         spin_lock_irq(&phba->hbalock);
 496         ha_copy = phba->work_ha;
 497         phba->work_ha = 0;
 498         spin_unlock_irq(&phba->hbalock);
 499
 500         /* First, try to post the next mailbox command to SLI4 device */
 501         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
 502                 lpfc_sli4_post_async_mbox(phba);
 503
 504         if (ha_copy & HA_ERATT)
 505                 /* Handle the error attention event */
 506                 lpfc_handle_eratt(phba);
 507
 508         if (ha_copy & HA_MBATT)
 509                 lpfc_sli_handle_mb_event(phba);
 510
 511         if (ha_copy & HA_LATT)
 512                 lpfc_handle_latt(phba);
 513
 514         /* Process SLI4 events */
 515         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
 516                 if (phba->hba_flag & FCP_XRI_ABORT_EVENT)
 517                         lpfc_sli4_fcp_xri_abort_event_proc(phba);
 518                 if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
 519                         lpfc_sli4_els_xri_abort_event_proc(phba);
 520                 if (phba->hba_flag & ASYNC_EVENT)
 521                         lpfc_sli4_async_event_proc(phba);
 522                 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
 523                         spin_lock_irq(&phba->hbalock);
 524                         phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
 525                         spin_unlock_irq(&phba->hbalock);
 526                         lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
 527                 }
 528                 if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
 529                         lpfc_sli4_fcf_redisc_event_proc(phba);
 530         }
 531
 532         vports = lpfc_create_vport_work_array(phba);
 533         if (vports != NULL)
 534                 for (i = 0; i <= phba->max_vports; i++) {
 535                         /*
 536                          * We could have no vports in array if unloading, so if
 537                          * this happens then just use the pport
 538                          */
 539                         if (vports[i] == NULL && i == 0)
 540                                 vport = phba->pport;
 541                         else
 542                                 vport = vports[i];
 543                         if (vport == NULL)
 544                                 break;
 545                         spin_lock_irq(&vport->work_port_lock);
 546                         work_port_events = vport->work_port_events;
 547                         vport->work_port_events &= ~work_port_events;
 548                         spin_unlock_irq(&vport->work_port_lock);
 549                         if (work_port_events & WORKER_DISC_TMO)
 550                                 lpfc_disc_timeout_handler(vport);
 551                         if (work_port_events & WORKER_ELS_TMO)
 552                                 lpfc_els_timeout_handler(vport);
 553                         if (work_port_events & WORKER_HB_TMO)
 554                                 lpfc_hb_timeout_handler(phba);
 555                         if (work_port_events & WORKER_MBOX_TMO)
 556                                 lpfc_mbox_timeout_handler(phba);
 557                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
 558                                 lpfc_unblock_fabric_iocbs(phba);
 559                         if (work_port_events & WORKER_FDMI_TMO)
 560                                 lpfc_fdmi_timeout_handler(vport);
 561                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
 562                                 lpfc_ramp_down_queue_handler(phba);
 563                         if (work_port_events & WORKER_RAMP_UP_QUEUE)
 564                                 lpfc_ramp_up_queue_handler(phba);
 565                 }
 566         lpfc_destroy_vport_work_array(phba, vports);
 567
 568         pring = &phba->sli.ring[LPFC_ELS_RING];
 569         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
 570         status >>= (4*LPFC_ELS_RING);
 571         if ((status & HA_RXMASK) ||
 572             (pring->flag & LPFC_DEFERRED_RING_EVENT) ||
 573             (phba->hba_flag & HBA_SP_QUEUE_EVT)) {
 574                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
 575                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
 576                         /* Set the lpfc data pending flag */
 577                         set_bit(LPFC_DATA_READY, &phba->data_flags);
 578                 } else {
 579                         pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
 580                         lpfc_sli_handle_slow_ring_event(phba, pring,
 581                                                         (status &
 582                                                          HA_RXMASK));
 583                 }
 584                 /*
 585                  * Turn on Ring interrupts
 586                  */
 587                 if (phba->sli_rev <= LPFC_SLI_REV3) {
 588                         spin_lock_irq(&phba->hbalock);
 589                         control = readl(phba->HCregaddr);
 590                         if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
 591                                 lpfc_debugfs_slow_ring_trc(phba,
 592                                         "WRK Enable ring: cntl:x%x hacopy:x%x",
 593                                         control, ha_copy, 0);
 594
 595                                 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
 596                                 writel(control, phba->HCregaddr);
 597                                 readl(phba->HCregaddr); /* flush */
 598                         } else {
 599                                 lpfc_debugfs_slow_ring_trc(phba,
 600                                         "WRK Ring ok:     cntl:x%x hacopy:x%x",
 601                                         control, ha_copy, 0);
 602                         }
 603                         spin_unlock_irq(&phba->hbalock);
 604                 }
 605         }
 606         lpfc_work_list_done(phba);
 607 }
 608
 609 int
 610 lpfc_do_work(void *p)
 611 {
 612         struct lpfc_hba *phba = p;
 613         int rc;
 614
 615         set_user_nice(current, -20);
 616         phba->data_flags = 0;
 617
 618         while (!kthread_should_stop()) {
 619                 /* wait and check worker queue activities */
 620                 rc = wait_event_interruptible(phba->work_waitq,
 621                                         (test_and_clear_bit(LPFC_DATA_READY,
 622                                                             &phba->data_flags)
 623                                          || kthread_should_stop()));
 624                 /* Signal wakeup shall terminate the worker thread */
 625                 if (rc) {
 626                         lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
 627                                         "0433 Wakeup on signal: rc=x%x\n", rc);
 628                         break;
 629                 }
 630
 631                 /* Attend pending lpfc data processing */
 632                 lpfc_work_done(phba);
 633         }
 634         phba->worker_thread = NULL;
 635         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
 636                         "0432 Worker thread stopped.\n");
 637         return 0;
 638 }
 639
 640 /*
 641  * This is only called to handle FC worker events. Since this a rare
 642  * occurance, we allocate a struct lpfc_work_evt structure here instead of
 643  * embedding it in the IOCB.
 644  */
 645 int
 646 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
 647                       uint32_t evt)
 648 {
 649         struct lpfc_work_evt  *evtp;
 650         unsigned long flags;
 651
 652         /*
 653          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
 654          * be queued to worker thread for processing
 655          */
 656         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
 657         if (!evtp)
 658                 return 0;
 659
 660         evtp->evt_arg1  = arg1;
 661         evtp->evt_arg2  = arg2;
 662         evtp->evt       = evt;
 663
 664         spin_lock_irqsave(&phba->hbalock, flags);
 665         list_add_tail(&evtp->evt_listp, &phba->work_list);
 666         spin_unlock_irqrestore(&phba->hbalock, flags);
 667
 668         lpfc_worker_wake_up(phba);
 669
 670         return 1;
 671 }
 672
 673 void
 674 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
 675 {
 676         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 677         struct lpfc_hba  *phba = vport->phba;
 678         struct lpfc_nodelist *ndlp, *next_ndlp;
 679         int  rc;
 680
 681         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
 682                 if (!NLP_CHK_NODE_ACT(ndlp))
 683                         continue;
 684                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 685                         continue;
 686                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
 687                         ((vport->port_type == LPFC_NPIV_PORT) &&
 688                         (ndlp->nlp_DID == NameServer_DID)))
 689                         lpfc_unreg_rpi(vport, ndlp);
 690
 691                 /* Leave Fabric nodes alone on link down */
 692                 if ((phba->sli_rev < LPFC_SLI_REV4) &&
 693                     (!remove && ndlp->nlp_type & NLP_FABRIC))
 694                         continue;
 695                 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
 696                                              remove
 697                                              ? NLP_EVT_DEVICE_RM
 698                                              : NLP_EVT_DEVICE_RECOVERY);
 699         }
 700         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
 701                 lpfc_mbx_unreg_vpi(vport);
 702                 spin_lock_irq(shost->host_lock);
 703                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
 704                 spin_unlock_irq(shost->host_lock);
 705         }
 706 }
 707
 708 void
 709 lpfc_port_link_failure(struct lpfc_vport *vport)
 710 {
 711         lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
 712
 713         /* Cleanup any outstanding received buffers */
 714         lpfc_cleanup_rcv_buffers(vport);
 715
 716         /* Cleanup any outstanding RSCN activity */
 717         lpfc_els_flush_rscn(vport);
 718
 719         /* Cleanup any outstanding ELS commands */
 720         lpfc_els_flush_cmd(vport);
 721
 722         lpfc_cleanup_rpis(vport, 0);
 723
 724         /* Turn off discovery timer if its running */
 725         lpfc_can_disctmo(vport);
 726 }
 727
 728 void
 729 lpfc_linkdown_port(struct lpfc_vport *vport)
 730 {
 731         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 732
 733         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
 734
 735         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 736                 "Link Down:       state:x%x rtry:x%x flg:x%x",
 737                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
 738
 739         lpfc_port_link_failure(vport);
 740
 741 }
 742
 743 int
 744 lpfc_linkdown(struct lpfc_hba *phba)
 745 {
 746         struct lpfc_vport *vport = phba->pport;
 747         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 748         struct lpfc_vport **vports;
 749         LPFC_MBOXQ_t          *mb;
 750         int i;
 751
 752         if (phba->link_state == LPFC_LINK_DOWN)
 753                 return 0;
 754
 755         /* Block all SCSI stack I/Os */
 756         lpfc_scsi_dev_block(phba);
 757
 758         spin_lock_irq(&phba->hbalock);
 759         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
 760         if (phba->link_state > LPFC_LINK_DOWN) {
 761                 phba->link_state = LPFC_LINK_DOWN;
 762                 phba->pport->fc_flag &= ~FC_LBIT;
 763         }
 764         spin_unlock_irq(&phba->hbalock);
 765         vports = lpfc_create_vport_work_array(phba);
 766         if (vports != NULL)
 767                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
 768                         /* Issue a LINK DOWN event to all nodes */
 769                         lpfc_linkdown_port(vports[i]);
 770                 }
 771         lpfc_destroy_vport_work_array(phba, vports);
 772         /* Clean up any firmware default rpi's */
 773         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 774         if (mb) {
 775                 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
 776                 mb->vport = vport;
 777                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 778                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 779                     == MBX_NOT_FINISHED) {
 780                         mempool_free(mb, phba->mbox_mem_pool);
 781                 }
 782         }
 783
 784         /* Setup myDID for link up if we are in pt2pt mode */
 785         if (phba->pport->fc_flag & FC_PT2PT) {
 786                 phba->pport->fc_myDID = 0;
 787                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 788                 if (mb) {
 789                         lpfc_config_link(phba, mb);
 790                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 791                         mb->vport = vport;
 792                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 793                             == MBX_NOT_FINISHED) {
 794                                 mempool_free(mb, phba->mbox_mem_pool);
 795                         }
 796                 }
 797                 spin_lock_irq(shost->host_lock);
 798                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
 799                 spin_unlock_irq(shost->host_lock);
 800         }
 801
 802         return 0;
 803 }
 804
 805 static void
 806 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
 807 {
 808         struct lpfc_nodelist *ndlp;
 809
 810         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
 811                 if (!NLP_CHK_NODE_ACT(ndlp))
 812                         continue;
 813                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 814                         continue;
 815                 if (ndlp->nlp_type & NLP_FABRIC) {
 816                         /* On Linkup its safe to clean up the ndlp
 817                          * from Fabric connections.
 818                          */
 819                         if (ndlp->nlp_DID != Fabric_DID)
 820                                 lpfc_unreg_rpi(vport, ndlp);
 821                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 822                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
 823                         /* Fail outstanding IO now since device is
 824                          * marked for PLOGI.
 825                          */
 826                         lpfc_unreg_rpi(vport, ndlp);
 827                 }
 828         }
 829 }
 830
 831 static void
 832 lpfc_linkup_port(struct lpfc_vport *vport)
 833 {
 834         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 835         struct lpfc_hba  *phba = vport->phba;
 836
 837         if ((vport->load_flag & FC_UNLOADING) != 0)
 838                 return;
 839
 840         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 841                 "Link Up:         top:x%x speed:x%x flg:x%x",
 842                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
 843
 844         /* If NPIV is not enabled, only bring the physical port up */
 845         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 846                 (vport != phba->pport))
 847                 return;
 848
 849         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
 850
 851         spin_lock_irq(shost->host_lock);
 852         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
 853                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
 854         vport->fc_flag |= FC_NDISC_ACTIVE;
 855         vport->fc_ns_retry = 0;
 856         spin_unlock_irq(shost->host_lock);
 857
 858         if (vport->fc_flag & FC_LBIT)
 859                 lpfc_linkup_cleanup_nodes(vport);
 860
 861 }
 862
 863 static int
 864 lpfc_linkup(struct lpfc_hba *phba)
 865 {
 866         struct lpfc_vport **vports;
 867         int i;
 868
 869         phba->link_state = LPFC_LINK_UP;
 870
 871         /* Unblock fabric iocbs if they are blocked */
 872         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
 873         del_timer_sync(&phba->fabric_block_timer);
 874
 875         vports = lpfc_create_vport_work_array(phba);
 876         if (vports != NULL)
 877                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
 878                         lpfc_linkup_port(vports[i]);
 879         lpfc_destroy_vport_work_array(phba, vports);
 880         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 881             (phba->sli_rev < LPFC_SLI_REV4))
 882                 lpfc_issue_clear_la(phba, phba->pport);
 883
 884         return 0;
 885 }
 886
 887 /*
 888  * This routine handles processing a CLEAR_LA mailbox
 889  * command upon completion. It is setup in the LPFC_MBOXQ
 890  * as the completion routine when the command is
 891  * handed off to the SLI layer.
 892  */
 893 static void
 894 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 895 {
 896         struct lpfc_vport *vport = pmb->vport;
 897         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 898         struct lpfc_sli   *psli = &phba->sli;
 899         MAILBOX_t *mb = &pmb->u.mb;
 900         uint32_t control;
 901
 902         /* Since we don't do discovery right now, turn these off here */
 903         psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 904         psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 905         psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 906
 907         /* Check for error */
 908         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
 909                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
 910                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 911                                  "0320 CLEAR_LA mbxStatus error x%x hba "
 912                                  "state x%x\n",
 913                                  mb->mbxStatus, vport->port_state);
 914                 phba->link_state = LPFC_HBA_ERROR;
 915                 goto out;
 916         }
 917
 918         if (vport->port_type == LPFC_PHYSICAL_PORT)
 919                 phba->link_state = LPFC_HBA_READY;
 920
 921         spin_lock_irq(&phba->hbalock);
 922         psli->sli_flag |= LPFC_PROCESS_LA;
 923         control = readl(phba->HCregaddr);
 924         control |= HC_LAINT_ENA;
 925         writel(control, phba->HCregaddr);
 926         readl(phba->HCregaddr); /* flush */
 927         spin_unlock_irq(&phba->hbalock);
 928         mempool_free(pmb, phba->mbox_mem_pool);
 929         return;
 930
 931 out:
 932         /* Device Discovery completes */
 933         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 934                          "0225 Device Discovery completes\n");
 935         mempool_free(pmb, phba->mbox_mem_pool);
 936
 937         spin_lock_irq(shost->host_lock);
 938         vport->fc_flag &= ~FC_ABORT_DISCOVERY;
 939         spin_unlock_irq(shost->host_lock);
 940
 941         lpfc_can_disctmo(vport);
 942
 943         /* turn on Link Attention interrupts */
 944
 945         spin_lock_irq(&phba->hbalock);
 946         psli->sli_flag |= LPFC_PROCESS_LA;
 947         control = readl(phba->HCregaddr);
 948         control |= HC_LAINT_ENA;
 949         writel(control, phba->HCregaddr);
 950         readl(phba->HCregaddr); /* flush */
 951         spin_unlock_irq(&phba->hbalock);
 952
 953         return;
 954 }
 955
 956
 957 static void
 958 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 959 {
 960         struct lpfc_vport *vport = pmb->vport;
 961
 962         if (pmb->u.mb.mbxStatus)
 963                 goto out;
 964
 965         mempool_free(pmb, phba->mbox_mem_pool);
 966
 967         if (phba->fc_topology == TOPOLOGY_LOOP &&
 968             vport->fc_flag & FC_PUBLIC_LOOP &&
 969             !(vport->fc_flag & FC_LBIT)) {
 970                         /* Need to wait for FAN - use discovery timer
 971                          * for timeout.  port_state is identically
 972                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
 973                          */
 974                         lpfc_set_disctmo(vport);
 975                         return;
 976         }
 977
 978         /* Start discovery by sending a FLOGI. port_state is identically
 979          * LPFC_FLOGI while waiting for FLOGI cmpl
 980          */
 981         if (vport->port_state != LPFC_FLOGI) {
 982                 lpfc_initial_flogi(vport);
 983         }
 984         return;
 985
 986 out:
 987         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 988                          "0306 CONFIG_LINK mbxStatus error x%x "
 989                          "HBA state x%x\n",
 990                          pmb->u.mb.mbxStatus, vport->port_state);
 991         mempool_free(pmb, phba->mbox_mem_pool);
 992
 993         lpfc_linkdown(phba);
 994
 995         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 996                          "0200 CONFIG_LINK bad hba state x%x\n",
 997                          vport->port_state);
 998
 999         lpfc_issue_clear_la(phba, vport);
1000         return;
1001 }
1002
1003 static void
1004 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1005 {
1006         struct lpfc_vport *vport = mboxq->vport;
1007         unsigned long flags;
1008
1009         if (mboxq->u.mb.mbxStatus) {
1010                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1011                          "2017 REG_FCFI mbxStatus error x%x "
1012                          "HBA state x%x\n",
1013                          mboxq->u.mb.mbxStatus, vport->port_state);
1014                 mempool_free(mboxq, phba->mbox_mem_pool);
1015                 return;
1016         }
1017
1018         /* Start FCoE discovery by sending a FLOGI. */
1019         phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1020         /* Set the FCFI registered flag */
1021         spin_lock_irqsave(&phba->hbalock, flags);
1022         phba->fcf.fcf_flag |= FCF_REGISTERED;
1023         spin_unlock_irqrestore(&phba->hbalock, flags);
1024         /* If there is a pending FCoE event, restart FCF table scan. */
1025         if (lpfc_check_pending_fcoe_event(phba, 1)) {
1026                 mempool_free(mboxq, phba->mbox_mem_pool);
1027                 return;
1028         }
1029         spin_lock_irqsave(&phba->hbalock, flags);
1030         phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1031         phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1032         spin_unlock_irqrestore(&phba->hbalock, flags);
1033         if (vport->port_state != LPFC_FLOGI)
1034                 lpfc_initial_flogi(vport);
1035
1036         mempool_free(mboxq, phba->mbox_mem_pool);
1037         return;
1038 }
1039
1040 /**
1041  * lpfc_fab_name_match - Check if the fcf fabric name match.
1042  * @fab_name: pointer to fabric name.
1043  * @new_fcf_record: pointer to fcf record.
1044  *
1045  * This routine compare the fcf record's fabric name with provided
1046  * fabric name. If the fabric name are identical this function
1047  * returns 1 else return 0.
1048  **/
1049 static uint32_t
1050 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1051 {
1052         if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1053                 return 0;
1054         if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1055                 return 0;
1056         if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1057                 return 0;
1058         if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1059                 return 0;
1060         if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1061                 return 0;
1062         if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1063                 return 0;
1064         if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1065                 return 0;
1066         if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1067                 return 0;
1068         return 1;
1069 }
1070
1071 /**
1072  * lpfc_sw_name_match - Check if the fcf switch name match.
1073  * @fab_name: pointer to fabric name.
1074  * @new_fcf_record: pointer to fcf record.
1075  *
1076  * This routine compare the fcf record's switch name with provided
1077  * switch name. If the switch name are identical this function
1078  * returns 1 else return 0.
1079  **/
1080 static uint32_t
1081 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1082 {
1083         if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1084                 return 0;
1085         if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1086                 return 0;
1087         if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1088                 return 0;
1089         if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1090                 return 0;
1091         if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1092                 return 0;
1093         if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1094                 return 0;
1095         if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1096                 return 0;
1097         if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1098                 return 0;
1099         return 1;
1100 }
1101
1102 /**
1103  * lpfc_mac_addr_match - Check if the fcf mac address match.
1104  * @mac_addr: pointer to mac address.
1105  * @new_fcf_record: pointer to fcf record.
1106  *
1107  * This routine compare the fcf record's mac address with HBA's
1108  * FCF mac address. If the mac addresses are identical this function
1109  * returns 1 else return 0.
1110  **/
1111 static uint32_t
1112 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1113 {
1114         if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1115                 return 0;
1116         if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1117                 return 0;
1118         if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1119                 return 0;
1120         if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1121                 return 0;
1122         if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1123                 return 0;
1124         if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1125                 return 0;
1126         return 1;
1127 }
1128
1129 static bool
1130 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1131 {
1132         return (curr_vlan_id == new_vlan_id);
1133 }
1134
1135 /**
1136  * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1137  * @fcf: pointer to driver fcf record.
1138  * @new_fcf_record: pointer to fcf record.
1139  *
1140  * This routine copies the FCF information from the FCF
1141  * record to lpfc_hba data structure.
1142  **/
1143 static void
1144 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1145                      struct fcf_record *new_fcf_record)
1146 {
1147         /* Fabric name */
1148         fcf_rec->fabric_name[0] =
1149                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1150         fcf_rec->fabric_name[1] =
1151                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1152         fcf_rec->fabric_name[2] =
1153                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1154         fcf_rec->fabric_name[3] =
1155                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1156         fcf_rec->fabric_name[4] =
1157                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1158         fcf_rec->fabric_name[5] =
1159                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1160         fcf_rec->fabric_name[6] =
1161                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1162         fcf_rec->fabric_name[7] =
1163                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1164         /* Mac address */
1165         fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1166         fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1167         fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1168         fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1169         fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1170         fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1171         /* FCF record index */
1172         fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1173         /* FCF record priority */
1174         fcf_rec->priority = new_fcf_record->fip_priority;
1175         /* Switch name */
1176         fcf_rec->switch_name[0] =
1177                 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1178         fcf_rec->switch_name[1] =
1179                 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1180         fcf_rec->switch_name[2] =
1181                 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1182         fcf_rec->switch_name[3] =
1183                 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1184         fcf_rec->switch_name[4] =
1185                 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1186         fcf_rec->switch_name[5] =
1187                 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1188         fcf_rec->switch_name[6] =
1189                 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1190         fcf_rec->switch_name[7] =
1191                 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1192 }
1193
1194 /**
1195  * lpfc_update_fcf_record - Update driver fcf record
1196  * @phba: pointer to lpfc hba data structure.
1197  * @fcf_rec: pointer to driver fcf record.
1198  * @new_fcf_record: pointer to hba fcf record.
1199  * @addr_mode: address mode to be set to the driver fcf record.
1200  * @vlan_id: vlan tag to be set to the driver fcf record.
1201  * @flag: flag bits to be set to the driver fcf record.
1202  *
1203  * This routine updates the driver FCF record from the new HBA FCF record
1204  * together with the address mode, vlan_id, and other informations. This
1205  * routine is called with the host lock held.
1206  **/
1207 static void
1208 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1209                        struct fcf_record *new_fcf_record, uint32_t addr_mode,
1210                        uint16_t vlan_id, uint32_t flag)
1211 {
1212         /* Copy the fields from the HBA's FCF record */
1213         lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1214         /* Update other fields of driver FCF record */
1215         fcf_rec->addr_mode = addr_mode;
1216         fcf_rec->vlan_id = vlan_id;
1217         fcf_rec->flag |= (flag | RECORD_VALID);
1218 }
1219
1220 /**
1221  * lpfc_register_fcf - Register the FCF with hba.
1222  * @phba: pointer to lpfc hba data structure.
1223  *
1224  * This routine issues a register fcfi mailbox command to register
1225  * the fcf with HBA.
1226  **/
1227 static void
1228 lpfc_register_fcf(struct lpfc_hba *phba)
1229 {
1230         LPFC_MBOXQ_t *fcf_mbxq;
1231         int rc;
1232         unsigned long flags;
1233
1234         spin_lock_irqsave(&phba->hbalock, flags);
1235
1236         /* If the FCF is not availabe do nothing. */
1237         if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1238                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1239                 spin_unlock_irqrestore(&phba->hbalock, flags);
1240                 return;
1241         }
1242
1243         /* The FCF is already registered, start discovery */
1244         if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1245                 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1246                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1247                 spin_unlock_irqrestore(&phba->hbalock, flags);
1248                 if (phba->pport->port_state != LPFC_FLOGI)
1249                         lpfc_initial_flogi(phba->pport);
1250                 return;
1251         }
1252         spin_unlock_irqrestore(&phba->hbalock, flags);
1253
1254         fcf_mbxq = mempool_alloc(phba->mbox_mem_pool,
1255                 GFP_KERNEL);
1256         if (!fcf_mbxq) {
1257                 spin_lock_irqsave(&phba->hbalock, flags);
1258                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1259                 spin_unlock_irqrestore(&phba->hbalock, flags);
1260                 return;
1261         }
1262
1263         lpfc_reg_fcfi(phba, fcf_mbxq);
1264         fcf_mbxq->vport = phba->pport;
1265         fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1266         rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1267         if (rc == MBX_NOT_FINISHED) {
1268                 spin_lock_irqsave(&phba->hbalock, flags);
1269                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1270                 spin_unlock_irqrestore(&phba->hbalock, flags);
1271                 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1272         }
1273
1274         return;
1275 }
1276
1277 /**
1278  * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1279  * @phba: pointer to lpfc hba data structure.
1280  * @new_fcf_record: pointer to fcf record.
1281  * @boot_flag: Indicates if this record used by boot bios.
1282  * @addr_mode: The address mode to be used by this FCF
1283  * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1284  *
1285  * This routine compare the fcf record with connect list obtained from the
1286  * config region to decide if this FCF can be used for SAN discovery. It returns
1287  * 1 if this record can be used for SAN discovery else return zero. If this FCF
1288  * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1289  * is used by boot bios and addr_mode will indicate the addressing mode to be
1290  * used for this FCF when the function returns.
1291  * If the FCF record need to be used with a particular vlan id, the vlan is
1292  * set in the vlan_id on return of the function. If not VLAN tagging need to
1293  * be used with the FCF vlan_id will be set to 0xFFFF;
1294  **/
1295 static int
1296 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1297                         struct fcf_record *new_fcf_record,
1298                         uint32_t *boot_flag, uint32_t *addr_mode,
1299                         uint16_t *vlan_id)
1300 {
1301         struct lpfc_fcf_conn_entry *conn_entry;
1302         int i, j, fcf_vlan_id = 0;
1303
1304         /* Find the lowest VLAN id in the FCF record */
1305         for (i = 0; i < 512; i++) {
1306                 if (new_fcf_record->vlan_bitmap[i]) {
1307                         fcf_vlan_id = i * 8;
1308                         j = 0;
1309                         while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1310                                 j++;
1311                                 fcf_vlan_id++;
1312                         }
1313                         break;
1314                 }
1315         }
1316
1317         /* If FCF not available return 0 */
1318         if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1319                 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record))
1320                 return 0;
1321
1322         if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1323                 *boot_flag = 0;
1324                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1325                                 new_fcf_record);
1326                 if (phba->valid_vlan)
1327                         *vlan_id = phba->vlan_id;
1328                 else
1329                         *vlan_id = 0xFFFF;
1330                 return 1;
1331         }
1332
1333         /*
1334          * If there are no FCF connection table entry, driver connect to all
1335          * FCFs.
1336          */
1337         if (list_empty(&phba->fcf_conn_rec_list)) {
1338                 *boot_flag = 0;
1339                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1340                         new_fcf_record);
1341
1342                 /*
1343                  * When there are no FCF connect entries, use driver's default
1344                  * addressing mode - FPMA.
1345                  */
1346                 if (*addr_mode & LPFC_FCF_FPMA)
1347                         *addr_mode = LPFC_FCF_FPMA;
1348
1349                 /* If FCF record report a vlan id use that vlan id */
1350                 if (fcf_vlan_id)
1351                         *vlan_id = fcf_vlan_id;
1352                 else
1353                         *vlan_id = 0xFFFF;
1354                 return 1;
1355         }
1356
1357         list_for_each_entry(conn_entry,
1358                             &phba->fcf_conn_rec_list, list) {
1359                 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1360                         continue;
1361
1362                 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1363                         !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1364                                              new_fcf_record))
1365                         continue;
1366                 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
1367                         !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
1368                                             new_fcf_record))
1369                         continue;
1370                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1371                         /*
1372                          * If the vlan bit map does not have the bit set for the
1373                          * vlan id to be used, then it is not a match.
1374                          */
1375                         if (!(new_fcf_record->vlan_bitmap
1376                                 [conn_entry->conn_rec.vlan_tag / 8] &
1377                                 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
1378                                 continue;
1379                 }
1380
1381                 /*
1382                  * If connection record does not support any addressing mode,
1383                  * skip the FCF record.
1384                  */
1385                 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
1386                         & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
1387                         continue;
1388
1389                 /*
1390                  * Check if the connection record specifies a required
1391                  * addressing mode.
1392                  */
1393                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1394                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
1395
1396                         /*
1397                          * If SPMA required but FCF not support this continue.
1398                          */
1399                         if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1400                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1401                                         new_fcf_record) & LPFC_FCF_SPMA))
1402                                 continue;
1403
1404                         /*
1405                          * If FPMA required but FCF not support this continue.
1406                          */
1407                         if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1408                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1409                                 new_fcf_record) & LPFC_FCF_FPMA))
1410                                 continue;
1411                 }
1412
1413                 /*
1414                  * This fcf record matches filtering criteria.
1415                  */
1416                 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
1417                         *boot_flag = 1;
1418                 else
1419                         *boot_flag = 0;
1420
1421                 /*
1422                  * If user did not specify any addressing mode, or if the
1423                  * prefered addressing mode specified by user is not supported
1424                  * by FCF, allow fabric to pick the addressing mode.
1425                  */
1426                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1427                                 new_fcf_record);
1428                 /*
1429                  * If the user specified a required address mode, assign that
1430                  * address mode
1431                  */
1432                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1433                         (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
1434                         *addr_mode = (conn_entry->conn_rec.flags &
1435                                 FCFCNCT_AM_SPMA) ?
1436                                 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
1437                 /*
1438                  * If the user specified a prefered address mode, use the
1439                  * addr mode only if FCF support the addr_mode.
1440                  */
1441                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1442                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1443                         (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1444                         (*addr_mode & LPFC_FCF_SPMA))
1445                                 *addr_mode = LPFC_FCF_SPMA;
1446                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1447                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1448                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1449                         (*addr_mode & LPFC_FCF_FPMA))
1450                                 *addr_mode = LPFC_FCF_FPMA;
1451
1452                 /* If matching connect list has a vlan id, use it */
1453                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
1454                         *vlan_id = conn_entry->conn_rec.vlan_tag;
1455                 /*
1456                  * If no vlan id is specified in connect list, use the vlan id
1457                  * in the FCF record
1458                  */
1459                 else if (fcf_vlan_id)
1460                         *vlan_id = fcf_vlan_id;
1461                 else
1462                         *vlan_id = 0xFFFF;
1463
1464                 return 1;
1465         }
1466
1467         return 0;
1468 }
1469
1470 /**
1471  * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
1472  * @phba: pointer to lpfc hba data structure.
1473  * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
1474  *
1475  * This function check if there is any fcoe event pending while driver
1476  * scan FCF entries. If there is any pending event, it will restart the
1477  * FCF saning and return 1 else return 0.
1478  */
1479 int
1480 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
1481 {
1482         LPFC_MBOXQ_t *mbox;
1483         int rc;
1484         /*
1485          * If the Link is up and no FCoE events while in the
1486          * FCF discovery, no need to restart FCF discovery.
1487          */
1488         if ((phba->link_state  >= LPFC_LINK_UP) &&
1489                 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
1490                 return 0;
1491
1492         spin_lock_irq(&phba->hbalock);
1493         phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
1494         spin_unlock_irq(&phba->hbalock);
1495
1496         if (phba->link_state >= LPFC_LINK_UP)
1497                 lpfc_sli4_read_fcf_record(phba, LPFC_FCOE_FCF_GET_FIRST);
1498         else {
1499                 /*
1500                  * Do not continue FCF discovery and clear FCF_DISC_INPROGRESS
1501                  * flag
1502                  */
1503                 spin_lock_irq(&phba->hbalock);
1504                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1505                 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
1506                 spin_unlock_irq(&phba->hbalock);
1507         }
1508
1509         if (unreg_fcf) {
1510                 spin_lock_irq(&phba->hbalock);
1511                 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
1512                 spin_unlock_irq(&phba->hbalock);
1513                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1514                 if (!mbox) {
1515                         lpfc_printf_log(phba, KERN_ERR,
1516                                 LOG_DISCOVERY|LOG_MBOX,
1517                                 "2610 UNREG_FCFI mbox allocation failed\n");
1518                         return 1;
1519                 }
1520                 lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
1521                 mbox->vport = phba->pport;
1522                 mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
1523                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1524                 if (rc == MBX_NOT_FINISHED) {
1525                         lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
1526                                 "2611 UNREG_FCFI issue mbox failed\n");
1527                         mempool_free(mbox, phba->mbox_mem_pool);
1528                 }
1529         }
1530
1531         return 1;
1532 }
1533
1534 /**
1535  * lpfc_mbx_cmpl_read_fcf_record - Completion handler for read_fcf mbox.
1536  * @phba: pointer to lpfc hba data structure.
1537  * @mboxq: pointer to mailbox object.
1538  *
1539  * This function iterate through all the fcf records available in
1540  * HBA and choose the optimal FCF record for discovery. After finding
1541  * the FCF for discovery it register the FCF record and kick start
1542  * discovery.
1543  * If FCF_IN_USE flag is set in currently used FCF, the routine try to
1544  * use a FCF record which match fabric name and mac address of the
1545  * currently used FCF record.
1546  * If the driver support only one FCF, it will try to use the FCF record
1547  * used by BOOT_BIOS.
1548  */
1549 void
1550 lpfc_mbx_cmpl_read_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1551 {
1552         void *virt_addr;
1553         dma_addr_t phys_addr;
1554         uint8_t *bytep;
1555         struct lpfc_mbx_sge sge;
1556         struct lpfc_mbx_read_fcf_tbl *read_fcf;
1557         uint32_t shdr_status, shdr_add_status;
1558         union lpfc_sli4_cfg_shdr *shdr;
1559         struct fcf_record *new_fcf_record;
1560         uint32_t boot_flag, addr_mode;
1561         uint32_t next_fcf_index;
1562         struct lpfc_fcf_rec *fcf_rec = NULL;
1563         unsigned long iflags;
1564         uint16_t vlan_id;
1565         int rc;
1566
1567         /* If there is pending FCoE event restart FCF table scan */
1568         if (lpfc_check_pending_fcoe_event(phba, 0)) {
1569                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1570                 return;
1571         }
1572
1573         /* Get the first SGE entry from the non-embedded DMA memory. This
1574          * routine only uses a single SGE.
1575          */
1576         lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
1577         phys_addr = getPaddr(sge.pa_hi, sge.pa_lo);
1578         if (unlikely(!mboxq->sge_array)) {
1579                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1580                                 "2524 Failed to get the non-embedded SGE "
1581                                 "virtual address\n");
1582                 goto out;
1583         }
1584         virt_addr = mboxq->sge_array->addr[0];
1585
1586         shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
1587         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
1588         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
1589                                  &shdr->response);
1590         /*
1591          * The FCF Record was read and there is no reason for the driver
1592          * to maintain the FCF record data or memory. Instead, just need
1593          * to book keeping the FCFIs can be used.
1594          */
1595         if (shdr_status || shdr_add_status) {
1596                 if (shdr_status == STATUS_FCF_TABLE_EMPTY) {
1597                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1598                                         "2726 READ_FCF_RECORD Indicates empty "
1599                                         "FCF table.\n");
1600                 } else {
1601                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1602                                         "2521 READ_FCF_RECORD mailbox failed "
1603                                         "with status x%x add_status x%x, mbx\n",
1604                                         shdr_status, shdr_add_status);
1605                 }
1606                 goto out;
1607         }
1608         /* Interpreting the returned information of FCF records */
1609         read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
1610         lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
1611                               sizeof(struct lpfc_mbx_read_fcf_tbl));
1612         next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
1613
1614         new_fcf_record = (struct fcf_record *)(virt_addr +
1615                           sizeof(struct lpfc_mbx_read_fcf_tbl));
1616         lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
1617                               sizeof(struct fcf_record));
1618         bytep = virt_addr + sizeof(union lpfc_sli4_cfg_shdr);
1619
1620         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
1621                                       &addr_mode, &vlan_id);
1622         /*
1623          * If the fcf record does not match with connect list entries
1624          * read the next entry.
1625          */
1626         if (!rc)
1627                 goto read_next_fcf;
1628         /*
1629          * If this is not the first FCF discovery of the HBA, use last
1630          * FCF record for the discovery. The condition that a rescan
1631          * matches the in-use FCF record: fabric name, switch name, mac
1632          * address, and vlan_id.
1633          */
1634         spin_lock_irqsave(&phba->hbalock, iflags);
1635         if (phba->fcf.fcf_flag & FCF_IN_USE) {
1636                 if (lpfc_fab_name_match(phba->fcf.current_rec.fabric_name,
1637                                         new_fcf_record) &&
1638                     lpfc_sw_name_match(phba->fcf.current_rec.switch_name,
1639                                         new_fcf_record) &&
1640                     lpfc_mac_addr_match(phba->fcf.current_rec.mac_addr,
1641                                         new_fcf_record) &&
1642                     lpfc_vlan_id_match(phba->fcf.current_rec.vlan_id,
1643                                         vlan_id)) {
1644                         phba->fcf.fcf_flag |= FCF_AVAILABLE;
1645                         if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
1646                                 /* Stop FCF redisc wait timer if pending */
1647                                 __lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
1648                         else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
1649                                 /* If in fast failover, mark it's completed */
1650                                 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
1651                         spin_unlock_irqrestore(&phba->hbalock, iflags);
1652                         goto out;
1653                 }
1654                 /*
1655                  * Read next FCF record from HBA searching for the matching
1656                  * with in-use record only if not during the fast failover
1657                  * period. In case of fast failover period, it shall try to
1658                  * determine whether the FCF record just read should be the
1659                  * next candidate.
1660                  */
1661                 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
1662                         spin_unlock_irqrestore(&phba->hbalock, iflags);
1663                         goto read_next_fcf;
1664                 }
1665         }
1666         /*
1667          * Update on failover FCF record only if it's in FCF fast-failover
1668          * period; otherwise, update on current FCF record.
1669          */
1670         if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
1671                 /* Fast FCF failover only to the same fabric name */
1672                 if (lpfc_fab_name_match(phba->fcf.current_rec.fabric_name,
1673                                         new_fcf_record))
1674                         fcf_rec = &phba->fcf.failover_rec;
1675                 else
1676                         goto read_next_fcf;
1677         } else
1678                 fcf_rec = &phba->fcf.current_rec;
1679
1680         if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
1681                 /*
1682                  * If the driver FCF record does not have boot flag
1683                  * set and new hba fcf record has boot flag set, use
1684                  * the new hba fcf record.
1685                  */
1686                 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
1687                         /* Choose this FCF record */
1688                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
1689                                         addr_mode, vlan_id, BOOT_ENABLE);
1690                         spin_unlock_irqrestore(&phba->hbalock, iflags);
1691                         goto read_next_fcf;
1692                 }
1693                 /*
1694                  * If the driver FCF record has boot flag set and the
1695                  * new hba FCF record does not have boot flag, read
1696                  * the next FCF record.
1697                  */
1698                 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
1699                         spin_unlock_irqrestore(&phba->hbalock, iflags);
1700                         goto read_next_fcf;
1701                 }
1702                 /*
1703                  * If the new hba FCF record has lower priority value
1704                  * than the driver FCF record, use the new record.
1705                  */
1706                 if (lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record) &&
1707                     (new_fcf_record->fip_priority < fcf_rec->priority)) {
1708                         /* Choose this FCF record */
1709                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
1710                                         addr_mode, vlan_id, 0);
1711                 }
1712                 spin_unlock_irqrestore(&phba->hbalock, iflags);
1713                 goto read_next_fcf;
1714         }
1715         /*
1716          * This is the first suitable FCF record, choose this record for
1717          * initial best-fit FCF.
1718          */
1719         if (fcf_rec) {
1720                 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
1721                                          addr_mode, vlan_id, (boot_flag ?
1722                                          BOOT_ENABLE : 0));
1723                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
1724         }
1725         spin_unlock_irqrestore(&phba->hbalock, iflags);
1726         goto read_next_fcf;
1727
1728 read_next_fcf:
1729         lpfc_sli4_mbox_cmd_free(phba, mboxq);
1730         if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
1731                 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
1732                         /*
1733                          * Case of FCF fast failover scan
1734                          */
1735
1736                         /*
1737                          * It has not found any suitable FCF record, cancel
1738                          * FCF scan inprogress, and do nothing
1739                          */
1740                         if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
1741                                 spin_lock_irqsave(&phba->hbalock, iflags);
1742                                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1743                                 spin_unlock_irqrestore(&phba->hbalock, iflags);
1744                                 return;
1745                         }
1746                         /*
1747                          * It has found a suitable FCF record that is not
1748                          * the same as in-use FCF record, unregister the
1749                          * in-use FCF record, replace the in-use FCF record
1750                          * with the new FCF record, mark FCF fast failover
1751                          * completed, and then start register the new FCF
1752                          * record.
1753                          */
1754
1755                         /* unregister the current in-use FCF record */
1756                         lpfc_unregister_fcf(phba);
1757                         /* replace in-use record with the new record */
1758                         memcpy(&phba->fcf.current_rec,
1759                                &phba->fcf.failover_rec,
1760                                sizeof(struct lpfc_fcf_rec));
1761                         /* mark the FCF fast failover completed */
1762                         spin_lock_irqsave(&phba->hbalock, iflags);
1763                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
1764                         spin_unlock_irqrestore(&phba->hbalock, iflags);
1765                         /* Register to the new FCF record */
1766                         lpfc_register_fcf(phba);
1767                 } else {
1768                         /*
1769                          * In case of transaction period to fast FCF failover,
1770                          * do nothing when search to the end of the FCF table.
1771                          */
1772                         if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
1773                             (phba->fcf.fcf_flag & FCF_REDISC_PEND))
1774                                 return;
1775                         /*
1776                          * Otherwise, initial scan or post linkdown rescan,
1777                          * register with the best fit FCF record found so
1778                          * far through the scanning process.
1779                          */
1780                         lpfc_register_fcf(phba);
1781                 }
1782         } else
1783                 lpfc_sli4_read_fcf_record(phba, next_fcf_index);
1784         return;
1785
1786 out:
1787         lpfc_sli4_mbox_cmd_free(phba, mboxq);
1788         lpfc_register_fcf(phba);
1789
1790         return;
1791 }
1792
1793 /**
1794  * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
1795  * @phba: pointer to lpfc hba data structure.
1796  * @mboxq: pointer to mailbox data structure.
1797  *
1798  * This function handles completion of init vpi mailbox command.
1799  */
1800 void
1801 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1802 {
1803         struct lpfc_vport *vport = mboxq->vport;
1804         struct lpfc_nodelist *ndlp;
1805         if (mboxq->u.mb.mbxStatus) {
1806                 lpfc_printf_vlog(vport, KERN_ERR,
1807                                 LOG_MBOX,
1808                                 "2609 Init VPI mailbox failed 0x%x\n",
1809                                 mboxq->u.mb.mbxStatus);
1810                 mempool_free(mboxq, phba->mbox_mem_pool);
1811                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1812                 return;
1813         }
1814         spin_lock_irq(&phba->hbalock);
1815         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
1816         spin_unlock_irq(&phba->hbalock);
1817
1818         /* If this port is physical port or FDISC is done, do reg_vpi */
1819         if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
1820                         ndlp = lpfc_findnode_did(vport, Fabric_DID);
1821                         if (!ndlp)
1822                                 lpfc_printf_vlog(vport, KERN_ERR,
1823                                         LOG_DISCOVERY,
1824                                         "2731 Cannot find fabric "
1825                                         "controller node\n");
1826                         else
1827                                 lpfc_register_new_vport(phba, vport, ndlp);
1828                         mempool_free(mboxq, phba->mbox_mem_pool);
1829                         return;
1830         }
1831
1832         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1833                 lpfc_initial_fdisc(vport);
1834         else {
1835                 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
1836                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1837                                  "2606 No NPIV Fabric support\n");
1838         }
1839         mempool_free(mboxq, phba->mbox_mem_pool);
1840         return;
1841 }
1842
1843 /**
1844  * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
1845  * @vport: pointer to lpfc_vport data structure.
1846  *
1847  * This function issue a init_vpi mailbox command to initialize
1848  * VPI for the vport.
1849  */
1850 void
1851 lpfc_issue_init_vpi(struct lpfc_vport *vport)
1852 {
1853         LPFC_MBOXQ_t *mboxq;
1854         int rc;
1855
1856         mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
1857         if (!mboxq) {
1858                 lpfc_printf_vlog(vport, KERN_ERR,
1859                         LOG_MBOX, "2607 Failed to allocate "
1860                         "init_vpi mailbox\n");
1861                 return;
1862         }
1863         lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
1864         mboxq->vport = vport;
1865         mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
1866         rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
1867         if (rc == MBX_NOT_FINISHED) {
1868                 lpfc_printf_vlog(vport, KERN_ERR,
1869                         LOG_MBOX, "2608 Failed to issue init_vpi mailbox\n");
1870                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
1871         }
1872 }
1873
1874 /**
1875  * lpfc_start_fdiscs - send fdiscs for each vports on this port.
1876  * @phba: pointer to lpfc hba data structure.
1877  *
1878  * This function loops through the list of vports on the @phba and issues an
1879  * FDISC if possible.
1880  */
1881 void
1882 lpfc_start_fdiscs(struct lpfc_hba *phba)
1883 {
1884         struct lpfc_vport **vports;
1885         int i;
1886
1887         vports = lpfc_create_vport_work_array(phba);
1888         if (vports != NULL) {
1889                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
1890                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1891                                 continue;
1892                         /* There are no vpi for this vport */
1893                         if (vports[i]->vpi > phba->max_vpi) {
1894                                 lpfc_vport_set_state(vports[i],
1895                                                      FC_VPORT_FAILED);
1896                                 continue;
1897                         }
1898                         if (phba->fc_topology == TOPOLOGY_LOOP) {
1899                                 lpfc_vport_set_state(vports[i],
1900                                                      FC_VPORT_LINKDOWN);
1901                                 continue;
1902                         }
1903                         if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
1904                                 lpfc_issue_init_vpi(vports[i]);
1905                                 continue;
1906                         }
1907                         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1908                                 lpfc_initial_fdisc(vports[i]);
1909                         else {
1910                                 lpfc_vport_set_state(vports[i],
1911                                                      FC_VPORT_NO_FABRIC_SUPP);
1912                                 lpfc_printf_vlog(vports[i], KERN_ERR,
1913                                                  LOG_ELS,
1914                                                  "0259 No NPIV "
1915                                                  "Fabric support\n");
1916                         }
1917                 }
1918         }
1919         lpfc_destroy_vport_work_array(phba, vports);
1920 }
1921
1922 void
1923 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1924 {
1925         struct lpfc_dmabuf *dmabuf = mboxq->context1;
1926         struct lpfc_vport *vport = mboxq->vport;
1927
1928         if (mboxq->u.mb.mbxStatus) {
1929                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1930                          "2018 REG_VFI mbxStatus error x%x "
1931                          "HBA state x%x\n",
1932                          mboxq->u.mb.mbxStatus, vport->port_state);
1933                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1934                         /* FLOGI failed, use loop map to make discovery list */
1935                         lpfc_disc_list_loopmap(vport);
1936                         /* Start discovery */
1937                         lpfc_disc_start(vport);
1938                         goto fail_free_mem;
1939                 }
1940                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1941                 goto fail_free_mem;
1942         }
1943         /* The VPI is implicitly registered when the VFI is registered */
1944         vport->vpi_state |= LPFC_VPI_REGISTERED;
1945         vport->fc_flag |= FC_VFI_REGISTERED;
1946
1947         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
1948
1949         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
1950                 lpfc_start_fdiscs(phba);
1951                 lpfc_do_scr_ns_plogi(phba, vport);
1952         }
1953
1954 fail_free_mem:
1955         mempool_free(mboxq, phba->mbox_mem_pool);
1956         lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
1957         kfree(dmabuf);
1958         return;
1959 }
1960
1961 static void
1962 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1963 {
1964         MAILBOX_t *mb = &pmb->u.mb;
1965         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
1966         struct lpfc_vport  *vport = pmb->vport;
1967
1968
1969         /* Check for error */
1970         if (mb->mbxStatus) {
1971                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
1972                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1973                                  "0319 READ_SPARAM mbxStatus error x%x "
1974                                  "hba state x%x>\n",
1975                                  mb->mbxStatus, vport->port_state);
1976                 lpfc_linkdown(phba);
1977                 goto out;
1978         }
1979
1980         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
1981                sizeof (struct serv_parm));
1982         if (phba->cfg_soft_wwnn)
1983                 u64_to_wwn(phba->cfg_soft_wwnn,
1984                            vport->fc_sparam.nodeName.u.wwn);
1985         if (phba->cfg_soft_wwpn)
1986                 u64_to_wwn(phba->cfg_soft_wwpn,
1987                            vport->fc_sparam.portName.u.wwn);
1988         memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
1989                sizeof(vport->fc_nodename));
1990         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
1991                sizeof(vport->fc_portname));
1992         if (vport->port_type == LPFC_PHYSICAL_PORT) {
1993                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
1994                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
1995         }
1996
1997         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1998         kfree(mp);
1999         mempool_free(pmb, phba->mbox_mem_pool);
2000         return;
2001
2002 out:
2003         pmb->context1 = NULL;
2004         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2005         kfree(mp);
2006         lpfc_issue_clear_la(phba, vport);
2007         mempool_free(pmb, phba->mbox_mem_pool);
2008         return;
2009 }
2010
2011 static void
2012 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
2013 {
2014         struct lpfc_vport *vport = phba->pport;
2015         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
2016         int i;
2017         struct lpfc_dmabuf *mp;
2018         int rc;
2019         struct fcf_record *fcf_record;
2020
2021         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2022
2023         spin_lock_irq(&phba->hbalock);
2024         switch (la->UlnkSpeed) {
2025         case LA_1GHZ_LINK:
2026                 phba->fc_linkspeed = LA_1GHZ_LINK;
2027                 break;
2028         case LA_2GHZ_LINK:
2029                 phba->fc_linkspeed = LA_2GHZ_LINK;
2030                 break;
2031         case LA_4GHZ_LINK:
2032                 phba->fc_linkspeed = LA_4GHZ_LINK;
2033                 break;
2034         case LA_8GHZ_LINK:
2035                 phba->fc_linkspeed = LA_8GHZ_LINK;
2036                 break;
2037         case LA_10GHZ_LINK:
2038                 phba->fc_linkspeed = LA_10GHZ_LINK;
2039                 break;
2040         default:
2041                 phba->fc_linkspeed = LA_UNKNW_LINK;
2042                 break;
2043         }
2044
2045         phba->fc_topology = la->topology;
2046         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
2047
2048         if (phba->fc_topology == TOPOLOGY_LOOP) {
2049                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
2050
2051                 /* if npiv is enabled and this adapter supports npiv log
2052                  * a message that npiv is not supported in this topology
2053                  */
2054                 if (phba->cfg_enable_npiv && phba->max_vpi)
2055                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2056                                 "1309 Link Up Event npiv not supported in loop "
2057                                 "topology\n");
2058                                 /* Get Loop Map information */
2059                 if (la->il)
2060                         vport->fc_flag |= FC_LBIT;
2061
2062                 vport->fc_myDID = la->granted_AL_PA;
2063                 i = la->un.lilpBde64.tus.f.bdeSize;
2064
2065                 if (i == 0) {
2066                         phba->alpa_map[0] = 0;
2067                 } else {
2068                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
2069                                 int numalpa, j, k;
2070                                 union {
2071                                         uint8_t pamap[16];
2072                                         struct {
2073                                                 uint32_t wd1;
2074                                                 uint32_t wd2;
2075                                                 uint32_t wd3;
2076                                                 uint32_t wd4;
2077                                         } pa;
2078                                 } un;
2079                                 numalpa = phba->alpa_map[0];
2080                                 j = 0;
2081                                 while (j < numalpa) {
2082                                         memset(un.pamap, 0, 16);
2083                                         for (k = 1; j < numalpa; k++) {
2084                                                 un.pamap[k - 1] =
2085                                                         phba->alpa_map[j + 1];
2086                                                 j++;
2087                                                 if (k == 16)
2088                                                         break;
2089                                         }
2090                                         /* Link Up Event ALPA map */
2091                                         lpfc_printf_log(phba,
2092                                                         KERN_WARNING,
2093                                                         LOG_LINK_EVENT,
2094                                                         "1304 Link Up Event "
2095                                                         "ALPA map Data: x%x "
2096                                                         "x%x x%x x%x\n",
2097                                                         un.pa.wd1, un.pa.wd2,
2098                                                         un.pa.wd3, un.pa.wd4);
2099                                 }
2100                         }
2101                 }
2102         } else {
2103                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
2104                         if (phba->max_vpi && phba->cfg_enable_npiv &&
2105                            (phba->sli_rev == 3))
2106                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
2107                 }
2108                 vport->fc_myDID = phba->fc_pref_DID;
2109                 vport->fc_flag |= FC_LBIT;
2110         }
2111         spin_unlock_irq(&phba->hbalock);
2112
2113         lpfc_linkup(phba);
2114         if (sparam_mbox) {
2115                 lpfc_read_sparam(phba, sparam_mbox, 0);
2116                 sparam_mbox->vport = vport;
2117                 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
2118                 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
2119                 if (rc == MBX_NOT_FINISHED) {
2120                         mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
2121                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2122                         kfree(mp);
2123                         mempool_free(sparam_mbox, phba->mbox_mem_pool);
2124                         goto out;
2125                 }
2126         }
2127
2128         if (!(phba->hba_flag & HBA_FCOE_SUPPORT)) {
2129                 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2130                 if (!cfglink_mbox)
2131                         goto out;
2132                 vport->port_state = LPFC_LOCAL_CFG_LINK;
2133                 lpfc_config_link(phba, cfglink_mbox);
2134                 cfglink_mbox->vport = vport;
2135                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
2136                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
2137                 if (rc == MBX_NOT_FINISHED) {
2138                         mempool_free(cfglink_mbox, phba->mbox_mem_pool);
2139                         goto out;
2140                 }
2141         } else {
2142                 vport->port_state = LPFC_VPORT_UNKNOWN;
2143                 /*
2144                  * Add the driver's default FCF record at FCF index 0 now. This
2145                  * is phase 1 implementation that support FCF index 0 and driver
2146                  * defaults.
2147                  */
2148                 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
2149                         fcf_record = kzalloc(sizeof(struct fcf_record),
2150                                         GFP_KERNEL);
2151                         if (unlikely(!fcf_record)) {
2152                                 lpfc_printf_log(phba, KERN_ERR,
2153                                         LOG_MBOX | LOG_SLI,
2154                                         "2554 Could not allocate memmory for "
2155                                         "fcf record\n");
2156                                 rc = -ENODEV;
2157                                 goto out;
2158                         }
2159
2160                         lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
2161                                                 LPFC_FCOE_FCF_DEF_INDEX);
2162                         rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
2163                         if (unlikely(rc)) {
2164                                 lpfc_printf_log(phba, KERN_ERR,
2165                                         LOG_MBOX | LOG_SLI,
2166                                         "2013 Could not manually add FCF "
2167                                         "record 0, status %d\n", rc);
2168                                 rc = -ENODEV;
2169                                 kfree(fcf_record);
2170                                 goto out;
2171                         }
2172                         kfree(fcf_record);
2173                 }
2174                 /*
2175                  * The driver is expected to do FIP/FCF. Call the port
2176                  * and get the FCF Table.
2177                  */
2178                 spin_lock_irq(&phba->hbalock);
2179                 if (phba->hba_flag & FCF_DISC_INPROGRESS) {
2180                         spin_unlock_irq(&phba->hbalock);
2181                         return;
2182                 }
2183                 spin_unlock_irq(&phba->hbalock);
2184                 rc = lpfc_sli4_read_fcf_record(phba, LPFC_FCOE_FCF_GET_FIRST);
2185                 if (rc)
2186                         goto out;
2187         }
2188
2189         return;
2190 out:
2191         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2192         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2193                          "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
2194                          vport->port_state, sparam_mbox, cfglink_mbox);
2195         lpfc_issue_clear_la(phba, vport);
2196         return;
2197 }
2198
2199 static void
2200 lpfc_enable_la(struct lpfc_hba *phba)
2201 {
2202         uint32_t control;
2203         struct lpfc_sli *psli = &phba->sli;
2204         spin_lock_irq(&phba->hbalock);
2205         psli->sli_flag |= LPFC_PROCESS_LA;
2206         if (phba->sli_rev <= LPFC_SLI_REV3) {
2207                 control = readl(phba->HCregaddr);
2208                 control |= HC_LAINT_ENA;
2209                 writel(control, phba->HCregaddr);
2210                 readl(phba->HCregaddr); /* flush */
2211         }
2212         spin_unlock_irq(&phba->hbalock);
2213 }
2214
2215 static void
2216 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
2217 {
2218         lpfc_linkdown(phba);
2219         lpfc_enable_la(phba);
2220         lpfc_unregister_unused_fcf(phba);
2221         /* turn on Link Attention interrupts - no CLEAR_LA needed */
2222 }
2223
2224
2225 /*
2226  * This routine handles processing a READ_LA mailbox
2227  * command upon completion. It is setup in the LPFC_MBOXQ
2228  * as the completion routine when the command is
2229  * handed off to the SLI layer.
2230  */
2231 void
2232 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2233 {
2234         struct lpfc_vport *vport = pmb->vport;
2235         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2236         READ_LA_VAR *la;
2237         MAILBOX_t *mb = &pmb->u.mb;
2238         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2239
2240         /* Unblock ELS traffic */
2241         phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
2242         /* Check for error */
2243         if (mb->mbxStatus) {
2244                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
2245                                 "1307 READ_LA mbox error x%x state x%x\n",
2246                                 mb->mbxStatus, vport->port_state);
2247                 lpfc_mbx_issue_link_down(phba);
2248                 phba->link_state = LPFC_HBA_ERROR;
2249                 goto lpfc_mbx_cmpl_read_la_free_mbuf;
2250         }
2251
2252         la = (READ_LA_VAR *) &pmb->u.mb.un.varReadLA;
2253
2254         memcpy(&phba->alpa_map[0], mp->virt, 128);
2255
2256         spin_lock_irq(shost->host_lock);
2257         if (la->pb)
2258                 vport->fc_flag |= FC_BYPASSED_MODE;
2259         else
2260                 vport->fc_flag &= ~FC_BYPASSED_MODE;
2261         spin_unlock_irq(shost->host_lock);
2262
2263         if ((phba->fc_eventTag  < la->eventTag) ||
2264             (phba->fc_eventTag == la->eventTag)) {
2265                 phba->fc_stat.LinkMultiEvent++;
2266                 if (la->attType == AT_LINK_UP)
2267                         if (phba->fc_eventTag != 0)
2268                                 lpfc_linkdown(phba);
2269         }
2270
2271         phba->fc_eventTag = la->eventTag;
2272         if (la->mm)
2273                 phba->sli.sli_flag |= LPFC_MENLO_MAINT;
2274         else
2275                 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
2276
2277         phba->link_events++;
2278         if (la->attType == AT_LINK_UP && (!la->mm)) {
2279                 phba->fc_stat.LinkUp++;
2280                 if (phba->link_flag & LS_LOOPBACK_MODE) {
2281                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2282                                         "1306 Link Up Event in loop back mode "
2283                                         "x%x received Data: x%x x%x x%x x%x\n",
2284                                         la->eventTag, phba->fc_eventTag,
2285                                         la->granted_AL_PA, la->UlnkSpeed,
2286                                         phba->alpa_map[0]);
2287                 } else {
2288                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2289                                         "1303 Link Up Event x%x received "
2290                                         "Data: x%x x%x x%x x%x x%x x%x %d\n",
2291                                         la->eventTag, phba->fc_eventTag,
2292                                         la->granted_AL_PA, la->UlnkSpeed,
2293                                         phba->alpa_map[0],
2294                                         la->mm, la->fa,
2295                                         phba->wait_4_mlo_maint_flg);
2296                 }
2297                 lpfc_mbx_process_link_up(phba, la);
2298         } else if (la->attType == AT_LINK_DOWN) {
2299                 phba->fc_stat.LinkDown++;
2300                 if (phba->link_flag & LS_LOOPBACK_MODE) {
2301                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2302                                 "1308 Link Down Event in loop back mode "
2303                                 "x%x received "
2304                                 "Data: x%x x%x x%x\n",
2305                                 la->eventTag, phba->fc_eventTag,
2306                                 phba->pport->port_state, vport->fc_flag);
2307                 }
2308                 else {
2309                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2310                                 "1305 Link Down Event x%x received "
2311                                 "Data: x%x x%x x%x x%x x%x\n",
2312                                 la->eventTag, phba->fc_eventTag,
2313                                 phba->pport->port_state, vport->fc_flag,
2314                                 la->mm, la->fa);
2315                 }
2316                 lpfc_mbx_issue_link_down(phba);
2317         }
2318         if (la->mm && la->attType == AT_LINK_UP) {
2319                 if (phba->link_state != LPFC_LINK_DOWN) {
2320                         phba->fc_stat.LinkDown++;
2321                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2322                                 "1312 Link Down Event x%x received "
2323                                 "Data: x%x x%x x%x\n",
2324                                 la->eventTag, phba->fc_eventTag,
2325                                 phba->pport->port_state, vport->fc_flag);
2326                         lpfc_mbx_issue_link_down(phba);
2327                 } else
2328                         lpfc_enable_la(phba);
2329
2330                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2331                                 "1310 Menlo Maint Mode Link up Event x%x rcvd "
2332                                 "Data: x%x x%x x%x\n",
2333                                 la->eventTag, phba->fc_eventTag,
2334                                 phba->pport->port_state, vport->fc_flag);
2335                 /*
2336                  * The cmnd that triggered this will be waiting for this
2337                  * signal.
2338                  */
2339                 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
2340                 if (phba->wait_4_mlo_maint_flg) {
2341                         phba->wait_4_mlo_maint_flg = 0;
2342                         wake_up_interruptible(&phba->wait_4_mlo_m_q);
2343                 }
2344         }
2345
2346         if (la->fa) {
2347                 if (la->mm)
2348                         lpfc_issue_clear_la(phba, vport);
2349                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
2350                                 "1311 fa %d\n", la->fa);
2351         }
2352
2353 lpfc_mbx_cmpl_read_la_free_mbuf:
2354         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2355         kfree(mp);
2356         mempool_free(pmb, phba->mbox_mem_pool);
2357         return;
2358 }
2359
2360 /*
2361  * This routine handles processing a REG_LOGIN mailbox
2362  * command upon completion. It is setup in the LPFC_MBOXQ
2363  * as the completion routine when the command is
2364  * handed off to the SLI layer.
2365  */
2366 void
2367 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2368 {
2369         struct lpfc_vport  *vport = pmb->vport;
2370         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2371         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2372
2373         pmb->context1 = NULL;
2374
2375         /* Good status, call state machine */
2376         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
2377         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2378         kfree(mp);
2379         mempool_free(pmb, phba->mbox_mem_pool);
2380         /* decrement the node reference count held for this callback
2381          * function.
2382          */
2383         lpfc_nlp_put(ndlp);
2384
2385         return;
2386 }
2387
2388 static void
2389 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2390 {
2391         MAILBOX_t *mb = &pmb->u.mb;
2392         struct lpfc_vport *vport = pmb->vport;
2393         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2394
2395         switch (mb->mbxStatus) {
2396         case 0x0011:
2397         case 0x0020:
2398         case 0x9700:
2399                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2400                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
2401                                  mb->mbxStatus);
2402                 break;
2403         }
2404         spin_lock_irq(&phba->hbalock);
2405         vport->vpi_state &= ~LPFC_VPI_REGISTERED;
2406         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
2407         spin_unlock_irq(&phba->hbalock);
2408         vport->unreg_vpi_cmpl = VPORT_OK;
2409         mempool_free(pmb, phba->mbox_mem_pool);
2410         /*
2411          * This shost reference might have been taken at the beginning of
2412          * lpfc_vport_delete()
2413          */
2414         if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
2415                 scsi_host_put(shost);
2416 }
2417
2418 int
2419 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
2420 {
2421         struct lpfc_hba  *phba = vport->phba;
2422         LPFC_MBOXQ_t *mbox;
2423         int rc;
2424
2425         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2426         if (!mbox)
2427                 return 1;
2428
2429         lpfc_unreg_vpi(phba, vport->vpi, mbox);
2430         mbox->vport = vport;
2431         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
2432         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2433         if (rc == MBX_NOT_FINISHED) {
2434                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
2435                                  "1800 Could not issue unreg_vpi\n");
2436                 mempool_free(mbox, phba->mbox_mem_pool);
2437                 vport->unreg_vpi_cmpl = VPORT_ERROR;
2438                 return rc;
2439         }
2440         return 0;
2441 }
2442
2443 static void
2444 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2445 {
2446         struct lpfc_vport *vport = pmb->vport;
2447         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2448         MAILBOX_t *mb = &pmb->u.mb;
2449
2450         switch (mb->mbxStatus) {
2451         case 0x0011:
2452         case 0x9601:
2453         case 0x9602:
2454                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2455                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
2456                                  mb->mbxStatus);
2457                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2458                 spin_lock_irq(shost->host_lock);
2459                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2460                 spin_unlock_irq(shost->host_lock);
2461                 vport->fc_myDID = 0;
2462                 goto out;
2463         }
2464
2465         vport->vpi_state |= LPFC_VPI_REGISTERED;
2466         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
2467         vport->num_disc_nodes = 0;
2468         /* go thru NPR list and issue ELS PLOGIs */
2469         if (vport->fc_npr_cnt)
2470                 lpfc_els_disc_plogi(vport);
2471
2472         if (!vport->num_disc_nodes) {
2473                 spin_lock_irq(shost->host_lock);
2474                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2475                 spin_unlock_irq(shost->host_lock);
2476                 lpfc_can_disctmo(vport);
2477         }
2478         vport->port_state = LPFC_VPORT_READY;
2479
2480 out:
2481         mempool_free(pmb, phba->mbox_mem_pool);
2482         return;
2483 }
2484
2485 /**
2486  * lpfc_create_static_vport - Read HBA config region to create static vports.
2487  * @phba: pointer to lpfc hba data structure.
2488  *
2489  * This routine issue a DUMP mailbox command for config region 22 to get
2490  * the list of static vports to be created. The function create vports
2491  * based on the information returned from the HBA.
2492  **/
2493 void
2494 lpfc_create_static_vport(struct lpfc_hba *phba)
2495 {
2496         LPFC_MBOXQ_t *pmb = NULL;
2497         MAILBOX_t *mb;
2498         struct static_vport_info *vport_info;
2499         int rc = 0, i;
2500         struct fc_vport_identifiers vport_id;
2501         struct fc_vport *new_fc_vport;
2502         struct Scsi_Host *shost;
2503         struct lpfc_vport *vport;
2504         uint16_t offset = 0;
2505         uint8_t *vport_buff;
2506         struct lpfc_dmabuf *mp;
2507         uint32_t byte_count = 0;
2508
2509         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2510         if (!pmb) {
2511                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2512                                 "0542 lpfc_create_static_vport failed to"
2513                                 " allocate mailbox memory\n");
2514                 return;
2515         }
2516
2517         mb = &pmb->u.mb;
2518
2519         vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
2520         if (!vport_info) {
2521                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2522                                 "0543 lpfc_create_static_vport failed to"
2523                                 " allocate vport_info\n");
2524                 mempool_free(pmb, phba->mbox_mem_pool);
2525                 return;
2526         }
2527
2528         vport_buff = (uint8_t *) vport_info;
2529         do {
2530                 if (lpfc_dump_static_vport(phba, pmb, offset))
2531                         goto out;
2532
2533                 pmb->vport = phba->pport;
2534                 rc = lpfc_sli_issue_mbox_wait(phba, pmb, LPFC_MBOX_TMO);
2535
2536                 if ((rc != MBX_SUCCESS) || mb->mbxStatus) {
2537                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2538                                 "0544 lpfc_create_static_vport failed to"
2539                                 " issue dump mailbox command ret 0x%x "
2540                                 "status 0x%x\n",
2541                                 rc, mb->mbxStatus);
2542                         goto out;
2543                 }
2544
2545                 if (phba->sli_rev == LPFC_SLI_REV4) {
2546                         byte_count = pmb->u.mqe.un.mb_words[5];
2547                         mp = (struct lpfc_dmabuf *) pmb->context2;
2548                         if (byte_count > sizeof(struct static_vport_info) -
2549                                         offset)
2550                                 byte_count = sizeof(struct static_vport_info)
2551                                         - offset;
2552                         memcpy(vport_buff + offset, mp->virt, byte_count);
2553                         offset += byte_count;
2554                 } else {
2555                         if (mb->un.varDmp.word_cnt >
2556                                 sizeof(struct static_vport_info) - offset)
2557                                 mb->un.varDmp.word_cnt =
2558                                         sizeof(struct static_vport_info)
2559                                                 - offset;
2560                         byte_count = mb->un.varDmp.word_cnt;
2561                         lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
2562                                 vport_buff + offset,
2563                                 byte_count);
2564
2565                         offset += byte_count;
2566                 }
2567
2568         } while (byte_count &&
2569                 offset < sizeof(struct static_vport_info));
2570
2571
2572         if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
2573                 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
2574                         != VPORT_INFO_REV)) {
2575                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2576                         "0545 lpfc_create_static_vport bad"
2577                         " information header 0x%x 0x%x\n",
2578                         le32_to_cpu(vport_info->signature),
2579                         le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK);
2580
2581                 goto out;
2582         }
2583
2584         shost = lpfc_shost_from_vport(phba->pport);
2585
2586         for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
2587                 memset(&vport_id, 0, sizeof(vport_id));
2588                 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
2589                 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
2590                 if (!vport_id.port_name || !vport_id.node_name)
2591                         continue;
2592
2593                 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
2594                 vport_id.vport_type = FC_PORTTYPE_NPIV;
2595                 vport_id.disable = false;
2596                 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
2597
2598                 if (!new_fc_vport) {
2599                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2600                                 "0546 lpfc_create_static_vport failed to"
2601                                 " create vport\n");
2602                         continue;
2603                 }
2604
2605                 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
2606                 vport->vport_flag |= STATIC_VPORT;
2607         }
2608
2609 out:
2610         kfree(vport_info);
2611         if (rc != MBX_TIMEOUT) {
2612                 if (pmb->context2) {
2613                         mp = (struct lpfc_dmabuf *) pmb->context2;
2614                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2615                         kfree(mp);
2616                 }
2617                 mempool_free(pmb, phba->mbox_mem_pool);
2618         }
2619
2620         return;
2621 }
2622
2623 /*
2624  * This routine handles processing a Fabric REG_LOGIN mailbox
2625  * command upon completion. It is setup in the LPFC_MBOXQ
2626  * as the completion routine when the command is
2627  * handed off to the SLI layer.
2628  */
2629 void
2630 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2631 {
2632         struct lpfc_vport *vport = pmb->vport;
2633         MAILBOX_t *mb = &pmb->u.mb;
2634         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2635         struct lpfc_nodelist *ndlp;
2636
2637         ndlp = (struct lpfc_nodelist *) pmb->context2;
2638         pmb->context1 = NULL;
2639         pmb->context2 = NULL;
2640         if (mb->mbxStatus) {
2641                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2642                                  "0258 Register Fabric login error: 0x%x\n",
2643                                  mb->mbxStatus);
2644                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2645                 kfree(mp);
2646                 mempool_free(pmb, phba->mbox_mem_pool);
2647
2648                 if (phba->fc_topology == TOPOLOGY_LOOP) {
2649                         /* FLOGI failed, use loop map to make discovery list */
2650                         lpfc_disc_list_loopmap(vport);
2651
2652                         /* Start discovery */
2653                         lpfc_disc_start(vport);
2654                         /* Decrement the reference count to ndlp after the
2655                          * reference to the ndlp are done.
2656                          */
2657                         lpfc_nlp_put(ndlp);
2658                         return;
2659                 }
2660
2661                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2662                 /* Decrement the reference count to ndlp after the reference
2663                  * to the ndlp are done.
2664                  */
2665                 lpfc_nlp_put(ndlp);
2666                 return;
2667         }
2668
2669         ndlp->nlp_rpi = mb->un.varWords[0];
2670         ndlp->nlp_flag |= NLP_RPI_VALID;
2671         ndlp->nlp_type |= NLP_FABRIC;
2672         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2673
2674         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
2675                 lpfc_start_fdiscs(phba);
2676                 lpfc_do_scr_ns_plogi(phba, vport);
2677         }
2678
2679         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2680         kfree(mp);
2681         mempool_free(pmb, phba->mbox_mem_pool);
2682
2683         /* Drop the reference count from the mbox at the end after
2684          * all the current reference to the ndlp have been done.
2685          */
2686         lpfc_nlp_put(ndlp);
2687         return;
2688 }
2689
2690 /*
2691  * This routine handles processing a NameServer REG_LOGIN mailbox
2692  * command upon completion. It is setup in the LPFC_MBOXQ
2693  * as the completion routine when the command is
2694  * handed off to the SLI layer.
2695  */
2696 void
2697 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2698 {
2699         MAILBOX_t *mb = &pmb->u.mb;
2700         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2701         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2702         struct lpfc_vport *vport = pmb->vport;
2703
2704         if (mb->mbxStatus) {
2705 out:
2706                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2707                                  "0260 Register NameServer error: 0x%x\n",
2708                                  mb->mbxStatus);
2709                 /* decrement the node reference count held for this
2710                  * callback function.
2711                  */
2712                 lpfc_nlp_put(ndlp);
2713                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2714                 kfree(mp);
2715                 mempool_free(pmb, phba->mbox_mem_pool);
2716
2717                 /* If no other thread is using the ndlp, free it */
2718                 lpfc_nlp_not_used(ndlp);
2719
2720                 if (phba->fc_topology == TOPOLOGY_LOOP) {
2721                         /*
2722                          * RegLogin failed, use loop map to make discovery
2723                          * list
2724                          */
2725                         lpfc_disc_list_loopmap(vport);
2726
2727                         /* Start discovery */
2728                         lpfc_disc_start(vport);
2729                         return;
2730                 }
2731                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2732                 return;
2733         }
2734
2735         pmb->context1 = NULL;
2736
2737         ndlp->nlp_rpi = mb->un.varWords[0];
2738         ndlp->nlp_flag |= NLP_RPI_VALID;
2739         ndlp->nlp_type |= NLP_FABRIC;
2740         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2741
2742         if (vport->port_state < LPFC_VPORT_READY) {
2743                 /* Link up discovery requires Fabric registration. */
2744                 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
2745                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
2746                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
2747                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
2748                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
2749
2750                 /* Issue SCR just before NameServer GID_FT Query */
2751                 lpfc_issue_els_scr(vport, SCR_DID, 0);
2752         }
2753
2754         vport->fc_ns_retry = 0;
2755         /* Good status, issue CT Request to NameServer */
2756         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
2757                 /* Cannot issue NameServer Query, so finish up discovery */
2758                 goto out;
2759         }
2760
2761         /* decrement the node reference count held for this
2762          * callback function.
2763          */
2764         lpfc_nlp_put(ndlp);
2765         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2766         kfree(mp);
2767         mempool_free(pmb, phba->mbox_mem_pool);
2768
2769         return;
2770 }
2771
2772 static void
2773 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2774 {
2775         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2776         struct fc_rport  *rport;
2777         struct lpfc_rport_data *rdata;
2778         struct fc_rport_identifiers rport_ids;
2779         struct lpfc_hba  *phba = vport->phba;
2780
2781         /* Remote port has reappeared. Re-register w/ FC transport */
2782         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
2783         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
2784         rport_ids.port_id = ndlp->nlp_DID;
2785         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
2786
2787         /*
2788          * We leave our node pointer in rport->dd_data when we unregister a
2789          * FCP target port.  But fc_remote_port_add zeros the space to which
2790          * rport->dd_data points.  So, if we're reusing a previously
2791          * registered port, drop the reference that we took the last time we
2792          * registered the port.
2793          */
2794         if (ndlp->rport && ndlp->rport->dd_data &&
2795             ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
2796                 lpfc_nlp_put(ndlp);
2797
2798         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
2799                 "rport add:       did:x%x flg:x%x type x%x",
2800                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2801
2802         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
2803         if (!rport || !get_device(&rport->dev)) {
2804                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
2805                            "Warning: fc_remote_port_add failed\n");
2806                 return;
2807         }
2808
2809         /* initialize static port data */
2810         rport->maxframe_size = ndlp->nlp_maxframe;
2811         rport->supported_classes = ndlp->nlp_class_sup;
2812         rdata = rport->dd_data;
2813         rdata->pnode = lpfc_nlp_get(ndlp);
2814
2815         if (ndlp->nlp_type & NLP_FCP_TARGET)
2816                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
2817         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
2818                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
2819
2820
2821         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
2822                 fc_remote_port_rolechg(rport, rport_ids.roles);
2823
2824         if ((rport->scsi_target_id != -1) &&
2825             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
2826                 ndlp->nlp_sid = rport->scsi_target_id;
2827         }
2828         return;
2829 }
2830
2831 static void
2832 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
2833 {
2834         struct fc_rport *rport = ndlp->rport;
2835
2836         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
2837                 "rport delete:    did:x%x flg:x%x type x%x",
2838                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2839
2840         fc_remote_port_delete(rport);
2841
2842         return;
2843 }
2844
2845 static void
2846 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
2847 {
2848         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2849
2850         spin_lock_irq(shost->host_lock);
2851         switch (state) {
2852         case NLP_STE_UNUSED_NODE:
2853                 vport->fc_unused_cnt += count;
2854                 break;
2855         case NLP_STE_PLOGI_ISSUE:
2856                 vport->fc_plogi_cnt += count;
2857                 break;
2858         case NLP_STE_ADISC_ISSUE:
2859                 vport->fc_adisc_cnt += count;
2860                 break;
2861         case NLP_STE_REG_LOGIN_ISSUE:
2862                 vport->fc_reglogin_cnt += count;
2863                 break;
2864         case NLP_STE_PRLI_ISSUE:
2865                 vport->fc_prli_cnt += count;
2866                 break;
2867         case NLP_STE_UNMAPPED_NODE:
2868                 vport->fc_unmap_cnt += count;
2869                 break;
2870         case NLP_STE_MAPPED_NODE:
2871                 vport->fc_map_cnt += count;
2872                 break;
2873         case NLP_STE_NPR_NODE:
2874                 vport->fc_npr_cnt += count;
2875                 break;
2876         }
2877         spin_unlock_irq(shost->host_lock);
2878 }
2879
2880 static void
2881 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2882                        int old_state, int new_state)
2883 {
2884         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2885
2886         if (new_state == NLP_STE_UNMAPPED_NODE) {
2887                 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
2888                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
2889                 ndlp->nlp_type |= NLP_FC_NODE;
2890         }
2891         if (new_state == NLP_STE_MAPPED_NODE)
2892                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
2893         if (new_state == NLP_STE_NPR_NODE)
2894                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
2895
2896         /* Transport interface */
2897         if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
2898                             old_state == NLP_STE_UNMAPPED_NODE)) {
2899                 vport->phba->nport_event_cnt++;
2900                 lpfc_unregister_remote_port(ndlp);
2901         }
2902
2903         if (new_state ==  NLP_STE_MAPPED_NODE ||
2904             new_state == NLP_STE_UNMAPPED_NODE) {
2905                 vport->phba->nport_event_cnt++;
2906                 /*
2907                  * Tell the fc transport about the port, if we haven't
2908                  * already. If we have, and it's a scsi entity, be
2909                  * sure to unblock any attached scsi devices
2910                  */
2911                 lpfc_register_remote_port(vport, ndlp);
2912         }
2913         if ((new_state ==  NLP_STE_MAPPED_NODE) &&
2914                 (vport->stat_data_enabled)) {
2915                 /*
2916                  * A new target is discovered, if there is no buffer for
2917                  * statistical data collection allocate buffer.
2918                  */
2919                 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
2920                                          sizeof(struct lpfc_scsicmd_bkt),
2921                                          GFP_KERNEL);
2922
2923                 if (!ndlp->lat_data)
2924                         lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
2925                                 "0286 lpfc_nlp_state_cleanup failed to "
2926                                 "allocate statistical data buffer DID "
2927                                 "0x%x\n", ndlp->nlp_DID);
2928         }
2929         /*
2930          * if we added to Mapped list, but the remote port
2931          * registration failed or assigned a target id outside
2932          * our presentable range - move the node to the
2933          * Unmapped List
2934          */
2935         if (new_state == NLP_STE_MAPPED_NODE &&
2936             (!ndlp->rport ||
2937              ndlp->rport->scsi_target_id == -1 ||
2938              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
2939                 spin_lock_irq(shost->host_lock);
2940                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
2941                 spin_unlock_irq(shost->host_lock);
2942                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2943         }
2944 }
2945
2946 static char *
2947 lpfc_nlp_state_name(char *buffer, size_t size, int state)
2948 {
2949         static char *states[] = {
2950                 [NLP_STE_UNUSED_NODE] = "UNUSED",
2951                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
2952                 [NLP_STE_ADISC_ISSUE] = "ADISC",
2953                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
2954                 [NLP_STE_PRLI_ISSUE] = "PRLI",
2955                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
2956                 [NLP_STE_MAPPED_NODE] = "MAPPED",
2957                 [NLP_STE_NPR_NODE] = "NPR",
2958         };
2959
2960         if (state < NLP_STE_MAX_STATE && states[state])
2961                 strlcpy(buffer, states[state], size);
2962         else
2963                 snprintf(buffer, size, "unknown (%d)", state);
2964         return buffer;
2965 }
2966
2967 void
2968 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2969                    int state)
2970 {
2971         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2972         int  old_state = ndlp->nlp_state;
2973         char name1[16], name2[16];
2974
2975         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2976                          "0904 NPort state transition x%06x, %s -> %s\n",
2977                          ndlp->nlp_DID,
2978                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
2979                          lpfc_nlp_state_name(name2, sizeof(name2), state));
2980
2981         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2982                 "node statechg    did:x%x old:%d ste:%d",
2983                 ndlp->nlp_DID, old_state, state);
2984
2985         if (old_state == NLP_STE_NPR_NODE &&
2986             state != NLP_STE_NPR_NODE)
2987                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2988         if (old_state == NLP_STE_UNMAPPED_NODE) {
2989                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
2990                 ndlp->nlp_type &= ~NLP_FC_NODE;
2991         }
2992
2993         if (list_empty(&ndlp->nlp_listp)) {
2994                 spin_lock_irq(shost->host_lock);
2995                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
2996                 spin_unlock_irq(shost->host_lock);
2997         } else if (old_state)
2998                 lpfc_nlp_counters(vport, old_state, -1);
2999
3000         ndlp->nlp_state = state;
3001         lpfc_nlp_counters(vport, state, 1);
3002         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
3003 }
3004
3005 void
3006 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3007 {
3008         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3009
3010         if (list_empty(&ndlp->nlp_listp)) {
3011                 spin_lock_irq(shost->host_lock);
3012                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
3013                 spin_unlock_irq(shost->host_lock);
3014         }
3015 }
3016
3017 void
3018 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3019 {
3020         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3021
3022         lpfc_cancel_retry_delay_tmo(vport, ndlp);
3023         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
3024                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
3025         spin_lock_irq(shost->host_lock);
3026         list_del_init(&ndlp->nlp_listp);
3027         spin_unlock_irq(shost->host_lock);
3028         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
3029                                 NLP_STE_UNUSED_NODE);
3030 }
3031
3032 static void
3033 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3034 {
3035         lpfc_cancel_retry_delay_tmo(vport, ndlp);
3036         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
3037                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
3038         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
3039                                 NLP_STE_UNUSED_NODE);
3040 }
3041 /**
3042  * lpfc_initialize_node - Initialize all fields of node object
3043  * @vport: Pointer to Virtual Port object.
3044  * @ndlp: Pointer to FC node object.
3045  * @did: FC_ID of the node.
3046  *
3047  * This function is always called when node object need to be initialized.
3048  * It initializes all the fields of the node object. Although the reference
3049  * to phba from @ndlp can be obtained indirectly through it's reference to
3050  * @vport, a direct reference to phba is taken here by @ndlp. This is due
3051  * to the life-span of the @ndlp might go beyond the existence of @vport as
3052  * the final release of ndlp is determined by its reference count. And, the
3053  * operation on @ndlp needs the reference to phba.
3054  **/
3055 static inline void
3056 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3057         uint32_t did)
3058 {
3059         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
3060         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
3061         init_timer(&ndlp->nlp_delayfunc);
3062         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
3063         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
3064         ndlp->nlp_DID = did;
3065         ndlp->vport = vport;
3066         ndlp->phba = vport->phba;
3067         ndlp->nlp_sid = NLP_NO_SID;
3068         kref_init(&ndlp->kref);
3069         NLP_INT_NODE_ACT(ndlp);
3070         atomic_set(&ndlp->cmd_pending, 0);
3071         ndlp->cmd_qdepth = LPFC_MAX_TGT_QDEPTH;
3072 }
3073
3074 struct lpfc_nodelist *
3075 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3076                  int state)
3077 {
3078         struct lpfc_hba *phba = vport->phba;
3079         uint32_t did;
3080         unsigned long flags;
3081
3082         if (!ndlp)
3083                 return NULL;
3084
3085         spin_lock_irqsave(&phba->ndlp_lock, flags);
3086         /* The ndlp should not be in memory free mode */
3087         if (NLP_CHK_FREE_REQ(ndlp)) {
3088                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3089                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3090                                 "0277 lpfc_enable_node: ndlp:x%p "
3091                                 "usgmap:x%x refcnt:%d\n",
3092                                 (void *)ndlp, ndlp->nlp_usg_map,
3093                                 atomic_read(&ndlp->kref.refcount));
3094                 return NULL;
3095         }
3096         /* The ndlp should not already be in active mode */
3097         if (NLP_CHK_NODE_ACT(ndlp)) {
3098                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3099                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3100                                 "0278 lpfc_enable_node: ndlp:x%p "
3101                                 "usgmap:x%x refcnt:%d\n",
3102                                 (void *)ndlp, ndlp->nlp_usg_map,
3103                                 atomic_read(&ndlp->kref.refcount));
3104                 return NULL;
3105         }
3106
3107         /* Keep the original DID */
3108         did = ndlp->nlp_DID;
3109
3110         /* re-initialize ndlp except of ndlp linked list pointer */
3111         memset((((char *)ndlp) + sizeof (struct list_head)), 0,
3112                 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
3113         lpfc_initialize_node(vport, ndlp, did);
3114
3115         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3116
3117         if (state != NLP_STE_UNUSED_NODE)
3118                 lpfc_nlp_set_state(vport, ndlp, state);
3119
3120         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
3121                 "node enable:       did:x%x",
3122                 ndlp->nlp_DID, 0, 0);
3123         return ndlp;
3124 }
3125
3126 void
3127 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3128 {
3129         /*
3130          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
3131          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
3132          * the ndlp from the vport. The ndlp marked as UNUSED on the list
3133          * until ALL other outstanding threads have completed. We check
3134          * that the ndlp not already in the UNUSED state before we proceed.
3135          */
3136         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
3137                 return;
3138         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
3139         lpfc_nlp_put(ndlp);
3140         return;
3141 }
3142
3143 /*
3144  * Start / ReStart rescue timer for Discovery / RSCN handling
3145  */
3146 void
3147 lpfc_set_disctmo(struct lpfc_vport *vport)
3148 {
3149         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3150         struct lpfc_hba  *phba = vport->phba;
3151         uint32_t tmo;
3152
3153         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
3154                 /* For FAN, timeout should be greater than edtov */
3155                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
3156         } else {
3157                 /* Normal discovery timeout should be > than ELS/CT timeout
3158                  * FC spec states we need 3 * ratov for CT requests
3159                  */
3160                 tmo = ((phba->fc_ratov * 3) + 3);
3161         }
3162
3163
3164         if (!timer_pending(&vport->fc_disctmo)) {
3165                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3166                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
3167                         tmo, vport->port_state, vport->fc_flag);
3168         }
3169
3170         mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
3171         spin_lock_irq(shost->host_lock);
3172         vport->fc_flag |= FC_DISC_TMO;
3173         spin_unlock_irq(shost->host_lock);
3174
3175         /* Start Discovery Timer state <hba_state> */
3176         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3177                          "0247 Start Discovery Timer state x%x "
3178                          "Data: x%x x%lx x%x x%x\n",
3179                          vport->port_state, tmo,
3180                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
3181                          vport->fc_adisc_cnt);
3182
3183         return;
3184 }
3185
3186 /*
3187  * Cancel rescue timer for Discovery / RSCN handling
3188  */
3189 int
3190 lpfc_can_disctmo(struct lpfc_vport *vport)
3191 {
3192         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3193         unsigned long iflags;
3194
3195         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3196                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
3197                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
3198
3199         /* Turn off discovery timer if its running */
3200         if (vport->fc_flag & FC_DISC_TMO) {
3201                 spin_lock_irqsave(shost->host_lock, iflags);
3202                 vport->fc_flag &= ~FC_DISC_TMO;
3203                 spin_unlock_irqrestore(shost->host_lock, iflags);
3204                 del_timer_sync(&vport->fc_disctmo);
3205                 spin_lock_irqsave(&vport->work_port_lock, iflags);
3206                 vport->work_port_events &= ~WORKER_DISC_TMO;
3207                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
3208         }
3209
3210         /* Cancel Discovery Timer state <hba_state> */
3211         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3212                          "0248 Cancel Discovery Timer state x%x "
3213                          "Data: x%x x%x x%x\n",
3214                          vport->port_state, vport->fc_flag,
3215                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
3216         return 0;
3217 }
3218
3219 /*
3220  * Check specified ring for outstanding IOCB on the SLI queue
3221  * Return true if iocb matches the specified nport
3222  */
3223 int
3224 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
3225                     struct lpfc_sli_ring *pring,
3226                     struct lpfc_iocbq *iocb,
3227                     struct lpfc_nodelist *ndlp)
3228 {
3229         struct lpfc_sli *psli = &phba->sli;
3230         IOCB_t *icmd = &iocb->iocb;
3231         struct lpfc_vport    *vport = ndlp->vport;
3232
3233         if (iocb->vport != vport)
3234                 return 0;
3235
3236         if (pring->ringno == LPFC_ELS_RING) {
3237                 switch (icmd->ulpCommand) {
3238                 case CMD_GEN_REQUEST64_CR:
3239                         if (iocb->context_un.ndlp == ndlp)
3240                                 return 1;
3241                 case CMD_ELS_REQUEST64_CR:
3242                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
3243                                 return 1;
3244                 case CMD_XMIT_ELS_RSP64_CX:
3245                         if (iocb->context1 == (uint8_t *) ndlp)
3246                                 return 1;
3247                 }
3248         } else if (pring->ringno == psli->extra_ring) {
3249
3250         } else if (pring->ringno == psli->fcp_ring) {
3251                 /* Skip match check if waiting to relogin to FCP target */
3252                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
3253                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
3254                         return 0;
3255                 }
3256                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
3257                         return 1;
3258                 }
3259         } else if (pring->ringno == psli->next_ring) {
3260
3261         }
3262         return 0;
3263 }
3264
3265 /*
3266  * Free resources / clean up outstanding I/Os
3267  * associated with nlp_rpi in the LPFC_NODELIST entry.
3268  */
3269 static int
3270 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
3271 {
3272         LIST_HEAD(completions);
3273         struct lpfc_sli *psli;
3274         struct lpfc_sli_ring *pring;
3275         struct lpfc_iocbq *iocb, *next_iocb;
3276         uint32_t i;
3277
3278         lpfc_fabric_abort_nport(ndlp);
3279
3280         /*
3281          * Everything that matches on txcmplq will be returned
3282          * by firmware with a no rpi error.
3283          */
3284         psli = &phba->sli;
3285         if (ndlp->nlp_flag & NLP_RPI_VALID) {
3286                 /* Now process each ring */
3287                 for (i = 0; i < psli->num_rings; i++) {
3288                         pring = &psli->ring[i];
3289
3290                         spin_lock_irq(&phba->hbalock);
3291                         list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
3292                                                  list) {
3293                                 /*
3294                                  * Check to see if iocb matches the nport we are
3295                                  * looking for
3296                                  */
3297                                 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
3298                                                          ndlp))) {
3299                                         /* It matches, so deque and call compl
3300                                            with an error */
3301                                         list_move_tail(&iocb->list,
3302                                                        &completions);
3303                                         pring->txq_cnt--;
3304                                 }
3305                         }
3306                         spin_unlock_irq(&phba->hbalock);
3307                 }
3308         }
3309
3310         /* Cancel all the IOCBs from the completions list */
3311         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
3312                               IOERR_SLI_ABORTED);
3313
3314         return 0;
3315 }
3316
3317 /*
3318  * Free rpi associated with LPFC_NODELIST entry.
3319  * This routine is called from lpfc_freenode(), when we are removing
3320  * a LPFC_NODELIST entry. It is also called if the driver initiates a
3321  * LOGO that completes successfully, and we are waiting to PLOGI back
3322  * to the remote NPort. In addition, it is called after we receive
3323  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
3324  * we are waiting to PLOGI back to the remote NPort.
3325  */
3326 int
3327 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3328 {
3329         struct lpfc_hba *phba = vport->phba;
3330         LPFC_MBOXQ_t    *mbox;
3331         int rc;
3332
3333         if (ndlp->nlp_flag & NLP_RPI_VALID) {
3334                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3335                 if (mbox) {
3336                         lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
3337                         mbox->vport = vport;
3338                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3339                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3340                         if (rc == MBX_NOT_FINISHED)
3341                                 mempool_free(mbox, phba->mbox_mem_pool);
3342                 }
3343                 lpfc_no_rpi(phba, ndlp);
3344                 ndlp->nlp_rpi = 0;
3345                 ndlp->nlp_flag &= ~NLP_RPI_VALID;
3346                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
3347                 return 1;
3348         }
3349         return 0;
3350 }
3351
3352 /**
3353  * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
3354  * @phba: pointer to lpfc hba data structure.
3355  *
3356  * This routine is invoked to unregister all the currently registered RPIs
3357  * to the HBA.
3358  **/
3359 void
3360 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
3361 {
3362         struct lpfc_vport **vports;
3363         struct lpfc_nodelist *ndlp;
3364         struct Scsi_Host *shost;
3365         int i;
3366
3367         vports = lpfc_create_vport_work_array(phba);
3368         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3369                 shost = lpfc_shost_from_vport(vports[i]);
3370                 spin_lock_irq(shost->host_lock);
3371                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
3372                         if (ndlp->nlp_flag & NLP_RPI_VALID)
3373                                 lpfc_unreg_rpi(vports[i], ndlp);
3374                 }
3375                 spin_unlock_irq(shost->host_lock);
3376         }
3377         lpfc_destroy_vport_work_array(phba, vports);
3378 }
3379
3380 void
3381 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
3382 {
3383         struct lpfc_hba  *phba  = vport->phba;
3384         LPFC_MBOXQ_t     *mbox;
3385         int rc;
3386
3387         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3388         if (mbox) {
3389                 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
3390                 mbox->vport = vport;
3391                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3392                 mbox->context1 = NULL;
3393                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
3394                 if (rc != MBX_TIMEOUT)
3395                         mempool_free(mbox, phba->mbox_mem_pool);
3396
3397                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
3398                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
3399                                 "1836 Could not issue "
3400                                 "unreg_login(all_rpis) status %d\n", rc);
3401         }
3402 }
3403
3404 void
3405 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
3406 {
3407         struct lpfc_hba  *phba  = vport->phba;
3408         LPFC_MBOXQ_t     *mbox;
3409         int rc;
3410
3411         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3412         if (mbox) {
3413                 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
3414                 mbox->vport = vport;
3415                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3416                 mbox->context1 = NULL;
3417                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
3418                 if (rc != MBX_TIMEOUT)
3419                         mempool_free(mbox, phba->mbox_mem_pool);
3420
3421                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
3422                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
3423                                          "1815 Could not issue "
3424                                          "unreg_did (default rpis) status %d\n",
3425                                          rc);
3426         }
3427 }
3428
3429 /*
3430  * Free resources associated with LPFC_NODELIST entry
3431  * so it can be freed.
3432  */
3433 static int
3434 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3435 {
3436         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3437         struct lpfc_hba  *phba = vport->phba;
3438         LPFC_MBOXQ_t *mb, *nextmb;
3439         struct lpfc_dmabuf *mp;
3440
3441         /* Cleanup node for NPort <nlp_DID> */
3442         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3443                          "0900 Cleanup node for NPort x%x "
3444                          "Data: x%x x%x x%x\n",
3445                          ndlp->nlp_DID, ndlp->nlp_flag,
3446                          ndlp->nlp_state, ndlp->nlp_rpi);
3447         if (NLP_CHK_FREE_REQ(ndlp)) {
3448                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3449                                 "0280 lpfc_cleanup_node: ndlp:x%p "
3450                                 "usgmap:x%x refcnt:%d\n",
3451                                 (void *)ndlp, ndlp->nlp_usg_map,
3452                                 atomic_read(&ndlp->kref.refcount));
3453                 lpfc_dequeue_node(vport, ndlp);
3454         } else {
3455                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3456                                 "0281 lpfc_cleanup_node: ndlp:x%p "
3457                                 "usgmap:x%x refcnt:%d\n",
3458                                 (void *)ndlp, ndlp->nlp_usg_map,
3459                                 atomic_read(&ndlp->kref.refcount));
3460                 lpfc_disable_node(vport, ndlp);
3461         }
3462
3463         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
3464         if ((mb = phba->sli.mbox_active)) {
3465                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
3466                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
3467                         mb->context2 = NULL;
3468                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3469                 }
3470         }
3471
3472         spin_lock_irq(&phba->hbalock);
3473         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
3474                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
3475                     (ndlp == (struct lpfc_nodelist *) mb->context2)) {
3476                         mp = (struct lpfc_dmabuf *) (mb->context1);
3477                         if (mp) {
3478                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
3479                                 kfree(mp);
3480                         }
3481                         list_del(&mb->list);
3482                         mempool_free(mb, phba->mbox_mem_pool);
3483                         /* We shall not invoke the lpfc_nlp_put to decrement
3484                          * the ndlp reference count as we are in the process
3485                          * of lpfc_nlp_release.
3486                          */
3487                 }
3488         }
3489         spin_unlock_irq(&phba->hbalock);
3490
3491         lpfc_els_abort(phba, ndlp);
3492
3493         spin_lock_irq(shost->host_lock);
3494         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
3495         spin_unlock_irq(shost->host_lock);
3496
3497         ndlp->nlp_last_elscmd = 0;
3498         del_timer_sync(&ndlp->nlp_delayfunc);
3499
3500         list_del_init(&ndlp->els_retry_evt.evt_listp);
3501         list_del_init(&ndlp->dev_loss_evt.evt_listp);
3502
3503         lpfc_unreg_rpi(vport, ndlp);
3504
3505         return 0;
3506 }
3507
3508 /*
3509  * Check to see if we can free the nlp back to the freelist.
3510  * If we are in the middle of using the nlp in the discovery state
3511  * machine, defer the free till we reach the end of the state machine.
3512  */
3513 static void
3514 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3515 {
3516         struct lpfc_hba  *phba = vport->phba;
3517         struct lpfc_rport_data *rdata;
3518         LPFC_MBOXQ_t *mbox;
3519         int rc;
3520
3521         lpfc_cancel_retry_delay_tmo(vport, ndlp);
3522         if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
3523             !(ndlp->nlp_flag & NLP_RPI_VALID)) {
3524                 /* For this case we need to cleanup the default rpi
3525                  * allocated by the firmware.
3526                  */
3527                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
3528                         != NULL) {
3529                         rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID,
3530                             (uint8_t *) &vport->fc_sparam, mbox, 0);
3531                         if (rc) {
3532                                 mempool_free(mbox, phba->mbox_mem_pool);
3533                         }
3534                         else {
3535                                 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
3536                                 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
3537                                 mbox->vport = vport;
3538                                 mbox->context2 = NULL;
3539                                 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3540                                 if (rc == MBX_NOT_FINISHED) {
3541                                         mempool_free(mbox, phba->mbox_mem_pool);
3542                                 }
3543                         }
3544                 }
3545         }
3546         lpfc_cleanup_node(vport, ndlp);
3547
3548         /*
3549          * We can get here with a non-NULL ndlp->rport because when we
3550          * unregister a rport we don't break the rport/node linkage.  So if we
3551          * do, make sure we don't leaving any dangling pointers behind.
3552          */
3553         if (ndlp->rport) {
3554                 rdata = ndlp->rport->dd_data;
3555                 rdata->pnode = NULL;
3556                 ndlp->rport = NULL;
3557         }
3558 }
3559
3560 static int
3561 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3562               uint32_t did)
3563 {
3564         D_ID mydid, ndlpdid, matchdid;
3565
3566         if (did == Bcast_DID)
3567                 return 0;
3568
3569         /* First check for Direct match */
3570         if (ndlp->nlp_DID == did)
3571                 return 1;
3572
3573         /* Next check for area/domain identically equals 0 match */
3574         mydid.un.word = vport->fc_myDID;
3575         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
3576                 return 0;
3577         }
3578
3579         matchdid.un.word = did;
3580         ndlpdid.un.word = ndlp->nlp_DID;
3581         if (matchdid.un.b.id == ndlpdid.un.b.id) {
3582                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
3583                     (mydid.un.b.area == matchdid.un.b.area)) {
3584                         if ((ndlpdid.un.b.domain == 0) &&
3585                             (ndlpdid.un.b.area == 0)) {
3586                                 if (ndlpdid.un.b.id)
3587                                         return 1;
3588                         }
3589                         return 0;
3590                 }
3591
3592                 matchdid.un.word = ndlp->nlp_DID;
3593                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
3594                     (mydid.un.b.area == ndlpdid.un.b.area)) {
3595                         if ((matchdid.un.b.domain == 0) &&
3596                             (matchdid.un.b.area == 0)) {
3597                                 if (matchdid.un.b.id)
3598                                         return 1;
3599                         }
3600                 }
3601         }
3602         return 0;
3603 }
3604
3605 /* Search for a nodelist entry */
3606 static struct lpfc_nodelist *
3607 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
3608 {
3609         struct lpfc_nodelist *ndlp;
3610         uint32_t data1;
3611
3612         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
3613                 if (lpfc_matchdid(vport, ndlp, did)) {
3614                         data1 = (((uint32_t) ndlp->nlp_state << 24) |
3615                                  ((uint32_t) ndlp->nlp_xri << 16) |
3616                                  ((uint32_t) ndlp->nlp_type << 8) |
3617                                  ((uint32_t) ndlp->nlp_rpi & 0xff));
3618                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3619                                          "0929 FIND node DID "
3620                                          "Data: x%p x%x x%x x%x\n",
3621                                          ndlp, ndlp->nlp_DID,
3622                                          ndlp->nlp_flag, data1);
3623                         return ndlp;
3624                 }
3625         }
3626
3627         /* FIND node did <did> NOT FOUND */
3628         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3629                          "0932 FIND node did x%x NOT FOUND.\n", did);
3630         return NULL;
3631 }
3632
3633 struct lpfc_nodelist *
3634 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
3635 {
3636         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3637         struct lpfc_nodelist *ndlp;
3638
3639         spin_lock_irq(shost->host_lock);
3640         ndlp = __lpfc_findnode_did(vport, did);
3641         spin_unlock_irq(shost->host_lock);
3642         return ndlp;
3643 }
3644
3645 struct lpfc_nodelist *
3646 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
3647 {
3648         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3649         struct lpfc_nodelist *ndlp;
3650
3651         ndlp = lpfc_findnode_did(vport, did);
3652         if (!ndlp) {
3653                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
3654                     lpfc_rscn_payload_check(vport, did) == 0)
3655                         return NULL;
3656                 ndlp = (struct lpfc_nodelist *)
3657                      mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
3658                 if (!ndlp)
3659                         return NULL;
3660                 lpfc_nlp_init(vport, ndlp, did);
3661                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
3662                 spin_lock_irq(shost->host_lock);
3663                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3664                 spin_unlock_irq(shost->host_lock);
3665                 return ndlp;
3666         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
3667                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
3668                 if (!ndlp)
3669                         return NULL;
3670                 spin_lock_irq(shost->host_lock);
3671                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3672                 spin_unlock_irq(shost->host_lock);
3673                 return ndlp;
3674         }
3675
3676         if ((vport->fc_flag & FC_RSCN_MODE) &&
3677             !(vport->fc_flag & FC_NDISC_ACTIVE)) {
3678                 if (lpfc_rscn_payload_check(vport, did)) {
3679                         /* If we've already recieved a PLOGI from this NPort
3680                          * we don't need to try to discover it again.
3681                          */
3682                         if (ndlp->nlp_flag & NLP_RCV_PLOGI)
3683                                 return NULL;
3684
3685                         /* Since this node is marked for discovery,
3686                          * delay timeout is not needed.
3687                          */
3688                         lpfc_cancel_retry_delay_tmo(vport, ndlp);
3689                         spin_lock_irq(shost->host_lock);
3690                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3691                         spin_unlock_irq(shost->host_lock);
3692                 } else
3693                         ndlp = NULL;
3694         } else {
3695                 /* If we've already recieved a PLOGI from this NPort,
3696                  * or we are already in the process of discovery on it,
3697                  * we don't need to try to discover it again.
3698                  */
3699                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
3700                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
3701                     ndlp->nlp_flag & NLP_RCV_PLOGI)
3702                         return NULL;
3703                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
3704                 spin_lock_irq(shost->host_lock);
3705                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3706                 spin_unlock_irq(shost->host_lock);
3707         }
3708         return ndlp;
3709 }
3710
3711 /* Build a list of nodes to discover based on the loopmap */
3712 void
3713 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
3714 {
3715         struct lpfc_hba  *phba = vport->phba;
3716         int j;
3717         uint32_t alpa, index;
3718
3719         if (!lpfc_is_link_up(phba))
3720                 return;
3721
3722         if (phba->fc_topology != TOPOLOGY_LOOP)
3723                 return;
3724
3725         /* Check for loop map present or not */
3726         if (phba->alpa_map[0]) {
3727                 for (j = 1; j <= phba->alpa_map[0]; j++) {
3728                         alpa = phba->alpa_map[j];
3729                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
3730                                 continue;
3731                         lpfc_setup_disc_node(vport, alpa);
3732                 }
3733         } else {
3734                 /* No alpamap, so try all alpa's */
3735                 for (j = 0; j < FC_MAXLOOP; j++) {
3736                         /* If cfg_scan_down is set, start from highest
3737                          * ALPA (0xef) to lowest (0x1).
3738                          */
3739                         if (vport->cfg_scan_down)
3740                                 index = j;
3741                         else
3742                                 index = FC_MAXLOOP - j - 1;
3743                         alpa = lpfcAlpaArray[index];
3744                         if ((vport->fc_myDID & 0xff) == alpa)
3745                                 continue;
3746                         lpfc_setup_disc_node(vport, alpa);
3747                 }
3748         }
3749         return;
3750 }
3751
3752 void
3753 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
3754 {
3755         LPFC_MBOXQ_t *mbox;
3756         struct lpfc_sli *psli = &phba->sli;
3757         struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
3758         struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
3759         struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
3760         int  rc;
3761
3762         /*
3763          * if it's not a physical port or if we already send
3764          * clear_la then don't send it.
3765          */
3766         if ((phba->link_state >= LPFC_CLEAR_LA) ||
3767             (vport->port_type != LPFC_PHYSICAL_PORT) ||
3768                 (phba->sli_rev == LPFC_SLI_REV4))
3769                 return;
3770
3771                         /* Link up discovery */
3772         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
3773                 phba->link_state = LPFC_CLEAR_LA;
3774                 lpfc_clear_la(phba, mbox);
3775                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
3776                 mbox->vport = vport;
3777                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3778                 if (rc == MBX_NOT_FINISHED) {
3779                         mempool_free(mbox, phba->mbox_mem_pool);
3780                         lpfc_disc_flush_list(vport);
3781                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
3782                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
3783                         next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
3784                         phba->link_state = LPFC_HBA_ERROR;
3785                 }
3786         }
3787 }
3788
3789 /* Reg_vpi to tell firmware to resume normal operations */
3790 void
3791 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
3792 {
3793         LPFC_MBOXQ_t *regvpimbox;
3794
3795         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3796         if (regvpimbox) {
3797                 lpfc_reg_vpi(vport, regvpimbox);
3798                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
3799                 regvpimbox->vport = vport;
3800                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
3801                                         == MBX_NOT_FINISHED) {
3802                         mempool_free(regvpimbox, phba->mbox_mem_pool);
3803                 }
3804         }
3805 }
3806
3807 /* Start Link up / RSCN discovery on NPR nodes */
3808 void
3809 lpfc_disc_start(struct lpfc_vport *vport)
3810 {
3811         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3812         struct lpfc_hba  *phba = vport->phba;
3813         uint32_t num_sent;
3814         uint32_t clear_la_pending;
3815         int did_changed;
3816
3817         if (!lpfc_is_link_up(phba))
3818                 return;
3819
3820         if (phba->link_state == LPFC_CLEAR_LA)
3821                 clear_la_pending = 1;
3822         else
3823                 clear_la_pending = 0;
3824
3825         if (vport->port_state < LPFC_VPORT_READY)
3826                 vport->port_state = LPFC_DISC_AUTH;
3827
3828         lpfc_set_disctmo(vport);
3829
3830         if (vport->fc_prevDID == vport->fc_myDID)
3831                 did_changed = 0;
3832         else
3833                 did_changed = 1;
3834
3835         vport->fc_prevDID = vport->fc_myDID;
3836         vport->num_disc_nodes = 0;
3837
3838         /* Start Discovery state <hba_state> */
3839         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3840                          "0202 Start Discovery hba state x%x "
3841                          "Data: x%x x%x x%x\n",
3842                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
3843                          vport->fc_adisc_cnt);
3844
3845         /* First do ADISCs - if any */
3846         num_sent = lpfc_els_disc_adisc(vport);
3847
3848         if (num_sent)
3849                 return;
3850
3851         /*
3852          * For SLI3, cmpl_reg_vpi will set port_state to READY, and
3853          * continue discovery.
3854          */
3855         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
3856             !(vport->fc_flag & FC_PT2PT) &&
3857             !(vport->fc_flag & FC_RSCN_MODE) &&
3858             (phba->sli_rev < LPFC_SLI_REV4)) {
3859                 lpfc_issue_reg_vpi(phba, vport);
3860                 return;
3861         }
3862
3863         /*
3864          * For SLI2, we need to set port_state to READY and continue
3865          * discovery.
3866          */
3867         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
3868                 /* If we get here, there is nothing to ADISC */
3869                 if (vport->port_type == LPFC_PHYSICAL_PORT)
3870                         lpfc_issue_clear_la(phba, vport);
3871
3872                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
3873                         vport->num_disc_nodes = 0;
3874                         /* go thru NPR nodes and issue ELS PLOGIs */
3875                         if (vport->fc_npr_cnt)
3876                                 lpfc_els_disc_plogi(vport);
3877
3878                         if (!vport->num_disc_nodes) {
3879                                 spin_lock_irq(shost->host_lock);
3880                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
3881                                 spin_unlock_irq(shost->host_lock);
3882                                 lpfc_can_disctmo(vport);
3883                         }
3884                 }
3885                 vport->port_state = LPFC_VPORT_READY;
3886         } else {
3887                 /* Next do PLOGIs - if any */
3888                 num_sent = lpfc_els_disc_plogi(vport);
3889
3890                 if (num_sent)
3891                         return;
3892
3893                 if (vport->fc_flag & FC_RSCN_MODE) {
3894                         /* Check to see if more RSCNs came in while we
3895                          * were processing this one.
3896                          */
3897                         if ((vport->fc_rscn_id_cnt == 0) &&
3898                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
3899                                 spin_lock_irq(shost->host_lock);
3900                                 vport->fc_flag &= ~FC_RSCN_MODE;
3901                                 spin_unlock_irq(shost->host_lock);
3902                                 lpfc_can_disctmo(vport);
3903                         } else
3904                                 lpfc_els_handle_rscn(vport);
3905                 }
3906         }
3907         return;
3908 }
3909
3910 /*
3911  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
3912  *  ring the match the sppecified nodelist.
3913  */
3914 static void
3915 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
3916 {
3917         LIST_HEAD(completions);
3918         struct lpfc_sli *psli;
3919         IOCB_t     *icmd;
3920         struct lpfc_iocbq    *iocb, *next_iocb;
3921         struct lpfc_sli_ring *pring;
3922
3923         psli = &phba->sli;
3924         pring = &psli->ring[LPFC_ELS_RING];
3925
3926         /* Error matching iocb on txq or txcmplq
3927          * First check the txq.
3928          */
3929         spin_lock_irq(&phba->hbalock);
3930         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
3931                 if (iocb->context1 != ndlp) {
3932                         continue;
3933                 }
3934                 icmd = &iocb->iocb;
3935                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
3936                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
3937
3938                         list_move_tail(&iocb->list, &completions);
3939                         pring->txq_cnt--;
3940                 }
3941         }
3942
3943         /* Next check the txcmplq */
3944         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
3945                 if (iocb->context1 != ndlp) {
3946                         continue;
3947                 }
3948                 icmd = &iocb->iocb;
3949                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
3950                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
3951                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
3952                 }
3953         }
3954         spin_unlock_irq(&phba->hbalock);
3955
3956         /* Cancel all the IOCBs from the completions list */
3957         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
3958                               IOERR_SLI_ABORTED);
3959 }
3960
3961 static void
3962 lpfc_disc_flush_list(struct lpfc_vport *vport)
3963 {
3964         struct lpfc_nodelist *ndlp, *next_ndlp;
3965         struct lpfc_hba *phba = vport->phba;
3966
3967         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
3968                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
3969                                          nlp_listp) {
3970                         if (!NLP_CHK_NODE_ACT(ndlp))
3971                                 continue;
3972                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
3973                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
3974                                 lpfc_free_tx(phba, ndlp);
3975                         }
3976                 }
3977         }
3978 }
3979
3980 void
3981 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
3982 {
3983         lpfc_els_flush_rscn(vport);
3984         lpfc_els_flush_cmd(vport);
3985         lpfc_disc_flush_list(vport);
3986 }
3987
3988 /*****************************************************************************/
3989 /*
3990  * NAME:     lpfc_disc_timeout
3991  *
3992  * FUNCTION: Fibre Channel driver discovery timeout routine.
3993  *
3994  * EXECUTION ENVIRONMENT: interrupt only
3995  *
3996  * CALLED FROM:
3997  *      Timer function
3998  *
3999  * RETURNS:
4000  *      none
4001  */
4002 /*****************************************************************************/
4003 void
4004 lpfc_disc_timeout(unsigned long ptr)
4005 {
4006         struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
4007         struct lpfc_hba   *phba = vport->phba;
4008         uint32_t tmo_posted;
4009         unsigned long flags = 0;
4010
4011         if (unlikely(!phba))
4012                 return;
4013
4014         spin_lock_irqsave(&vport->work_port_lock, flags);
4015         tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
4016         if (!tmo_posted)
4017                 vport->work_port_events |= WORKER_DISC_TMO;
4018         spin_unlock_irqrestore(&vport->work_port_lock, flags);
4019
4020         if (!tmo_posted)
4021                 lpfc_worker_wake_up(phba);
4022         return;
4023 }
4024
4025 static void
4026 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
4027 {
4028         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4029         struct lpfc_hba  *phba = vport->phba;
4030         struct lpfc_sli  *psli = &phba->sli;
4031         struct lpfc_nodelist *ndlp, *next_ndlp;
4032         LPFC_MBOXQ_t *initlinkmbox;
4033         int rc, clrlaerr = 0;
4034
4035         if (!(vport->fc_flag & FC_DISC_TMO))
4036                 return;
4037
4038         spin_lock_irq(shost->host_lock);
4039         vport->fc_flag &= ~FC_DISC_TMO;
4040         spin_unlock_irq(shost->host_lock);
4041
4042         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4043                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
4044                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
4045
4046         switch (vport->port_state) {
4047
4048         case LPFC_LOCAL_CFG_LINK:
4049         /* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
4050          * FAN
4051          */
4052                                 /* FAN timeout */
4053                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
4054                                  "0221 FAN timeout\n");
4055                 /* Start discovery by sending FLOGI, clean up old rpis */
4056                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
4057                                          nlp_listp) {
4058                         if (!NLP_CHK_NODE_ACT(ndlp))
4059                                 continue;
4060                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
4061                                 continue;
4062                         if (ndlp->nlp_type & NLP_FABRIC) {
4063                                 /* Clean up the ndlp on Fabric connections */
4064                                 lpfc_drop_node(vport, ndlp);
4065
4066                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
4067                                 /* Fail outstanding IO now since device
4068                                  * is marked for PLOGI.
4069                                  */
4070                                 lpfc_unreg_rpi(vport, ndlp);
4071                         }
4072                 }
4073                 if (vport->port_state != LPFC_FLOGI) {
4074                         lpfc_initial_flogi(vport);
4075                         return;
4076                 }
4077                 break;
4078
4079         case LPFC_FDISC:
4080         case LPFC_FLOGI:
4081         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
4082                 /* Initial FLOGI timeout */
4083                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4084                                  "0222 Initial %s timeout\n",
4085                                  vport->vpi ? "FDISC" : "FLOGI");
4086
4087                 /* Assume no Fabric and go on with discovery.
4088                  * Check for outstanding ELS FLOGI to abort.
4089                  */
4090
4091                 /* FLOGI failed, so just use loop map to make discovery list */
4092                 lpfc_disc_list_loopmap(vport);
4093
4094                 /* Start discovery */
4095                 lpfc_disc_start(vport);
4096                 break;
4097
4098         case LPFC_FABRIC_CFG_LINK:
4099         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
4100            NameServer login */
4101                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4102                                  "0223 Timeout while waiting for "
4103                                  "NameServer login\n");
4104                 /* Next look for NameServer ndlp */
4105                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
4106                 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
4107                         lpfc_els_abort(phba, ndlp);
4108
4109                 /* ReStart discovery */
4110                 goto restart_disc;
4111
4112         case LPFC_NS_QRY:
4113         /* Check for wait for NameServer Rsp timeout */
4114                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4115                                  "0224 NameServer Query timeout "
4116                                  "Data: x%x x%x\n",
4117                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
4118
4119                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
4120                         /* Try it one more time */
4121                         vport->fc_ns_retry++;
4122                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
4123                                          vport->fc_ns_retry, 0);
4124                         if (rc == 0)
4125                                 break;
4126                 }
4127                 vport->fc_ns_retry = 0;
4128
4129 restart_disc:
4130                 /*
4131                  * Discovery is over.
4132                  * set port_state to PORT_READY if SLI2.
4133                  * cmpl_reg_vpi will set port_state to READY for SLI3.
4134                  */
4135                 if (phba->sli_rev < LPFC_SLI_REV4) {
4136                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
4137                                 lpfc_issue_reg_vpi(phba, vport);
4138                         else  { /* NPIV Not enabled */
4139                                 lpfc_issue_clear_la(phba, vport);
4140                                 vport->port_state = LPFC_VPORT_READY;
4141                         }
4142                 }
4143
4144                 /* Setup and issue mailbox INITIALIZE LINK command */
4145                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4146                 if (!initlinkmbox) {
4147                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4148                                          "0206 Device Discovery "
4149                                          "completion error\n");
4150                         phba->link_state = LPFC_HBA_ERROR;
4151                         break;
4152                 }
4153
4154                 lpfc_linkdown(phba);
4155                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
4156                                phba->cfg_link_speed);
4157                 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
4158                 initlinkmbox->vport = vport;
4159                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4160                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
4161                 lpfc_set_loopback_flag(phba);
4162                 if (rc == MBX_NOT_FINISHED)
4163                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
4164
4165                 break;
4166
4167         case LPFC_DISC_AUTH:
4168         /* Node Authentication timeout */
4169                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4170                                  "0227 Node Authentication timeout\n");
4171                 lpfc_disc_flush_list(vport);
4172
4173                 /*
4174                  * set port_state to PORT_READY if SLI2.
4175                  * cmpl_reg_vpi will set port_state to READY for SLI3.
4176                  */
4177                 if (phba->sli_rev < LPFC_SLI_REV4) {
4178                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
4179                                 lpfc_issue_reg_vpi(phba, vport);
4180                         else  { /* NPIV Not enabled */
4181                                 lpfc_issue_clear_la(phba, vport);
4182                                 vport->port_state = LPFC_VPORT_READY;
4183                         }
4184                 }
4185                 break;
4186
4187         case LPFC_VPORT_READY:
4188                 if (vport->fc_flag & FC_RSCN_MODE) {
4189                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4190                                          "0231 RSCN timeout Data: x%x "
4191                                          "x%x\n",
4192                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
4193
4194                         /* Cleanup any outstanding ELS commands */
4195                         lpfc_els_flush_cmd(vport);
4196
4197                         lpfc_els_flush_rscn(vport);
4198                         lpfc_disc_flush_list(vport);
4199                 }
4200                 break;
4201
4202         default:
4203                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4204                                  "0273 Unexpected discovery timeout, "
4205                                  "vport State x%x\n", vport->port_state);
4206                 break;
4207         }
4208
4209         switch (phba->link_state) {
4210         case LPFC_CLEAR_LA:
4211                                 /* CLEAR LA timeout */
4212                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4213                                  "0228 CLEAR LA timeout\n");
4214                 clrlaerr = 1;
4215                 break;
4216
4217         case LPFC_LINK_UP:
4218                 lpfc_issue_clear_la(phba, vport);
4219                 /* Drop thru */
4220         case LPFC_LINK_UNKNOWN:
4221         case LPFC_WARM_START:
4222         case LPFC_INIT_START:
4223         case LPFC_INIT_MBX_CMDS:
4224         case LPFC_LINK_DOWN:
4225         case LPFC_HBA_ERROR:
4226                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4227                                  "0230 Unexpected timeout, hba link "
4228                                  "state x%x\n", phba->link_state);
4229                 clrlaerr = 1;
4230                 break;
4231
4232         case LPFC_HBA_READY:
4233                 break;
4234         }
4235
4236         if (clrlaerr) {
4237                 lpfc_disc_flush_list(vport);
4238                 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
4239                 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
4240                 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
4241                 vport->port_state = LPFC_VPORT_READY;
4242         }
4243
4244         return;
4245 }
4246
4247 /*
4248  * This routine handles processing a NameServer REG_LOGIN mailbox
4249  * command upon completion. It is setup in the LPFC_MBOXQ
4250  * as the completion routine when the command is
4251  * handed off to the SLI layer.
4252  */
4253 void
4254 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4255 {
4256         MAILBOX_t *mb = &pmb->u.mb;
4257         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
4258         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
4259         struct lpfc_vport    *vport = pmb->vport;
4260
4261         pmb->context1 = NULL;
4262
4263         ndlp->nlp_rpi = mb->un.varWords[0];
4264         ndlp->nlp_flag |= NLP_RPI_VALID;
4265         ndlp->nlp_type |= NLP_FABRIC;
4266         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4267
4268         /*
4269          * Start issuing Fabric-Device Management Interface (FDMI) command to
4270          * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
4271          * fdmi-on=2 (supporting RPA/hostnmae)
4272          */
4273
4274         if (vport->cfg_fdmi_on == 1)
4275                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
4276         else
4277                 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
4278
4279         /* decrement the node reference count held for this callback
4280          * function.
4281          */
4282         lpfc_nlp_put(ndlp);
4283         lpfc_mbuf_free(phba, mp->virt, mp->phys);
4284         kfree(mp);
4285         mempool_free(pmb, phba->mbox_mem_pool);
4286
4287         return;
4288 }
4289
4290 static int
4291 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
4292 {
4293         uint16_t *rpi = param;
4294
4295         return ndlp->nlp_rpi == *rpi;
4296 }
4297
4298 static int
4299 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
4300 {
4301         return memcmp(&ndlp->nlp_portname, param,
4302                       sizeof(ndlp->nlp_portname)) == 0;
4303 }
4304
4305 static struct lpfc_nodelist *
4306 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
4307 {
4308         struct lpfc_nodelist *ndlp;
4309
4310         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4311                 if (filter(ndlp, param))
4312                         return ndlp;
4313         }
4314         return NULL;
4315 }
4316
4317 /*
4318  * This routine looks up the ndlp lists for the given RPI. If rpi found it
4319  * returns the node list element pointer else return NULL.
4320  */
4321 struct lpfc_nodelist *
4322 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
4323 {
4324         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
4325 }
4326
4327 /*
4328  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
4329  * returns the node element list pointer else return NULL.
4330  */
4331 struct lpfc_nodelist *
4332 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
4333 {
4334         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4335         struct lpfc_nodelist *ndlp;
4336
4337         spin_lock_irq(shost->host_lock);
4338         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
4339         spin_unlock_irq(shost->host_lock);
4340         return ndlp;
4341 }
4342
4343 void
4344 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4345               uint32_t did)
4346 {
4347         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
4348
4349         lpfc_initialize_node(vport, ndlp, did);
4350         INIT_LIST_HEAD(&ndlp->nlp_listp);
4351
4352         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4353                 "node init:       did:x%x",
4354                 ndlp->nlp_DID, 0, 0);
4355
4356         return;
4357 }
4358
4359 /* This routine releases all resources associated with a specifc NPort's ndlp
4360  * and mempool_free's the nodelist.
4361  */
4362 static void
4363 lpfc_nlp_release(struct kref *kref)
4364 {
4365         struct lpfc_hba *phba;
4366         unsigned long flags;
4367         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
4368                                                   kref);
4369
4370         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4371                 "node release:    did:x%x flg:x%x type:x%x",
4372                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4373
4374         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
4375                         "0279 lpfc_nlp_release: ndlp:x%p "
4376                         "usgmap:x%x refcnt:%d\n",
4377                         (void *)ndlp, ndlp->nlp_usg_map,
4378                         atomic_read(&ndlp->kref.refcount));
4379
4380         /* remove ndlp from action. */
4381         lpfc_nlp_remove(ndlp->vport, ndlp);
4382
4383         /* clear the ndlp active flag for all release cases */
4384         phba = ndlp->phba;
4385         spin_lock_irqsave(&phba->ndlp_lock, flags);
4386         NLP_CLR_NODE_ACT(ndlp);
4387         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4388
4389         /* free ndlp memory for final ndlp release */
4390         if (NLP_CHK_FREE_REQ(ndlp)) {
4391                 kfree(ndlp->lat_data);
4392                 mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
4393         }
4394 }
4395
4396 /* This routine bumps the reference count for a ndlp structure to ensure
4397  * that one discovery thread won't free a ndlp while another discovery thread
4398  * is using it.
4399  */
4400 struct lpfc_nodelist *
4401 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
4402 {
4403         struct lpfc_hba *phba;
4404         unsigned long flags;
4405
4406         if (ndlp) {
4407                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4408                         "node get:        did:x%x flg:x%x refcnt:x%x",
4409                         ndlp->nlp_DID, ndlp->nlp_flag,
4410                         atomic_read(&ndlp->kref.refcount));
4411                 /* The check of ndlp usage to prevent incrementing the
4412                  * ndlp reference count that is in the process of being
4413                  * released.
4414                  */
4415                 phba = ndlp->phba;
4416                 spin_lock_irqsave(&phba->ndlp_lock, flags);
4417                 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
4418                         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4419                         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
4420                                 "0276 lpfc_nlp_get: ndlp:x%p "
4421                                 "usgmap:x%x refcnt:%d\n",
4422                                 (void *)ndlp, ndlp->nlp_usg_map,
4423                                 atomic_read(&ndlp->kref.refcount));
4424                         return NULL;
4425                 } else
4426                         kref_get(&ndlp->kref);
4427                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4428         }
4429         return ndlp;
4430 }
4431
4432 /* This routine decrements the reference count for a ndlp structure. If the
4433  * count goes to 0, this indicates the the associated nodelist should be
4434  * freed. Returning 1 indicates the ndlp resource has been released; on the
4435  * other hand, returning 0 indicates the ndlp resource has not been released
4436  * yet.
4437  */
4438 int
4439 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
4440 {
4441         struct lpfc_hba *phba;
4442         unsigned long flags;
4443
4444         if (!ndlp)
4445                 return 1;
4446
4447         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4448         "node put:        did:x%x flg:x%x refcnt:x%x",
4449                 ndlp->nlp_DID, ndlp->nlp_flag,
4450                 atomic_read(&ndlp->kref.refcount));
4451         phba = ndlp->phba;
4452         spin_lock_irqsave(&phba->ndlp_lock, flags);
4453         /* Check the ndlp memory free acknowledge flag to avoid the
4454          * possible race condition that kref_put got invoked again
4455          * after previous one has done ndlp memory free.
4456          */
4457         if (NLP_CHK_FREE_ACK(ndlp)) {
4458                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4459                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
4460                                 "0274 lpfc_nlp_put: ndlp:x%p "
4461                                 "usgmap:x%x refcnt:%d\n",
4462                                 (void *)ndlp, ndlp->nlp_usg_map,
4463                                 atomic_read(&ndlp->kref.refcount));
4464                 return 1;
4465         }
4466         /* Check the ndlp inactivate log flag to avoid the possible
4467          * race condition that kref_put got invoked again after ndlp
4468          * is already in inactivating state.
4469          */
4470         if (NLP_CHK_IACT_REQ(ndlp)) {
4471                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4472                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
4473                                 "0275 lpfc_nlp_put: ndlp:x%p "
4474                                 "usgmap:x%x refcnt:%d\n",
4475                                 (void *)ndlp, ndlp->nlp_usg_map,
4476                                 atomic_read(&ndlp->kref.refcount));
4477                 return 1;
4478         }
4479         /* For last put, mark the ndlp usage flags to make sure no
4480          * other kref_get and kref_put on the same ndlp shall get
4481          * in between the process when the final kref_put has been
4482          * invoked on this ndlp.
4483          */
4484         if (atomic_read(&ndlp->kref.refcount) == 1) {
4485                 /* Indicate ndlp is put to inactive state. */
4486                 NLP_SET_IACT_REQ(ndlp);
4487                 /* Acknowledge ndlp memory free has been seen. */
4488                 if (NLP_CHK_FREE_REQ(ndlp))
4489                         NLP_SET_FREE_ACK(ndlp);
4490         }
4491         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4492         /* Note, the kref_put returns 1 when decrementing a reference
4493          * count that was 1, it invokes the release callback function,
4494          * but it still left the reference count as 1 (not actually
4495          * performs the last decrementation). Otherwise, it actually
4496          * decrements the reference count and returns 0.
4497          */
4498         return kref_put(&ndlp->kref, lpfc_nlp_release);
4499 }
4500
4501 /* This routine free's the specified nodelist if it is not in use
4502  * by any other discovery thread. This routine returns 1 if the
4503  * ndlp has been freed. A return value of 0 indicates the ndlp is
4504  * not yet been released.
4505  */
4506 int
4507 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
4508 {
4509         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4510                 "node not used:   did:x%x flg:x%x refcnt:x%x",
4511                 ndlp->nlp_DID, ndlp->nlp_flag,
4512                 atomic_read(&ndlp->kref.refcount));
4513         if (atomic_read(&ndlp->kref.refcount) == 1)
4514                 if (lpfc_nlp_put(ndlp))
4515                         return 1;
4516         return 0;
4517 }
4518
4519 /**
4520  * lpfc_fcf_inuse - Check if FCF can be unregistered.
4521  * @phba: Pointer to hba context object.
4522  *
4523  * This function iterate through all FC nodes associated
4524  * will all vports to check if there is any node with
4525  * fc_rports associated with it. If there is an fc_rport
4526  * associated with the node, then the node is either in
4527  * discovered state or its devloss_timer is pending.
4528  */
4529 static int
4530 lpfc_fcf_inuse(struct lpfc_hba *phba)
4531 {
4532         struct lpfc_vport **vports;
4533         int i, ret = 0;
4534         struct lpfc_nodelist *ndlp;
4535         struct Scsi_Host  *shost;
4536
4537         vports = lpfc_create_vport_work_array(phba);
4538
4539         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4540                 shost = lpfc_shost_from_vport(vports[i]);
4541                 spin_lock_irq(shost->host_lock);
4542                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
4543                         if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport &&
4544                           (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
4545                                 ret = 1;
4546                                 spin_unlock_irq(shost->host_lock);
4547                                 goto out;
4548                         } else {
4549                                 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
4550                                         "2624 RPI %x DID %x flg %x still "
4551                                         "logged in\n",
4552                                         ndlp->nlp_rpi, ndlp->nlp_DID,
4553                                         ndlp->nlp_flag);
4554                                 if (ndlp->nlp_flag & NLP_RPI_VALID)
4555                                         ret = 1;
4556                         }
4557                 }
4558                 spin_unlock_irq(shost->host_lock);
4559         }
4560 out:
4561         lpfc_destroy_vport_work_array(phba, vports);
4562         return ret;
4563 }
4564
4565 /**
4566  * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
4567  * @phba: Pointer to hba context object.
4568  * @mboxq: Pointer to mailbox object.
4569  *
4570  * This function frees memory associated with the mailbox command.
4571  */
4572 static void
4573 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
4574 {
4575         struct lpfc_vport *vport = mboxq->vport;
4576
4577         if (mboxq->u.mb.mbxStatus) {
4578                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4579                         "2555 UNREG_VFI mbxStatus error x%x "
4580                         "HBA state x%x\n",
4581                         mboxq->u.mb.mbxStatus, vport->port_state);
4582         }
4583         mempool_free(mboxq, phba->mbox_mem_pool);
4584         return;
4585 }
4586
4587 /**
4588  * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
4589  * @phba: Pointer to hba context object.
4590  * @mboxq: Pointer to mailbox object.
4591  *
4592  * This function frees memory associated with the mailbox command.
4593  */
4594 static void
4595 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
4596 {
4597         struct lpfc_vport *vport = mboxq->vport;
4598
4599         if (mboxq->u.mb.mbxStatus) {
4600                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4601                         "2550 UNREG_FCFI mbxStatus error x%x "
4602                         "HBA state x%x\n",
4603                         mboxq->u.mb.mbxStatus, vport->port_state);
4604         }
4605         mempool_free(mboxq, phba->mbox_mem_pool);
4606         return;
4607 }
4608
4609 /**
4610  * lpfc_unregister_fcf_prep - Unregister fcf record preparation
4611  * @phba: Pointer to hba context object.
4612  *
4613  * This function prepare the HBA for unregistering the currently registered
4614  * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
4615  * VFIs.
4616  */
4617 int
4618 lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
4619 {
4620         LPFC_MBOXQ_t *mbox;
4621         struct lpfc_vport **vports;
4622         struct lpfc_nodelist *ndlp;
4623         int i, rc;
4624
4625         /* Unregister RPIs */
4626         if (lpfc_fcf_inuse(phba))
4627                 lpfc_unreg_hba_rpis(phba);
4628
4629         /* At this point, all discovery is aborted */
4630         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
4631
4632         /* Unregister VPIs */
4633         vports = lpfc_create_vport_work_array(phba);
4634         if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
4635                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4636                         /* Stop FLOGI/FDISC retries */
4637                         ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
4638                         if (ndlp)
4639                                 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
4640                         lpfc_mbx_unreg_vpi(vports[i]);
4641                         spin_lock_irq(&phba->hbalock);
4642                         vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
4643                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
4644                         spin_unlock_irq(&phba->hbalock);
4645                 }
4646         lpfc_destroy_vport_work_array(phba, vports);
4647
4648         /* Cleanup any outstanding ELS commands */
4649         lpfc_els_flush_all_cmd(phba);
4650
4651         /* Unregister VFI */
4652         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4653         if (!mbox) {
4654                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4655                                 "2556 UNREG_VFI mbox allocation failed"
4656                                 "HBA state x%x\n", phba->pport->port_state);
4657                 return -ENOMEM;
4658         }
4659
4660         lpfc_unreg_vfi(mbox, phba->pport);
4661         mbox->vport = phba->pport;
4662         mbox->mbox_cmpl = lpfc_unregister_vfi_cmpl;
4663
4664         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4665         if (rc == MBX_NOT_FINISHED) {
4666                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4667                                 "2557 UNREG_VFI issue mbox failed rc x%x "
4668                                 "HBA state x%x\n",
4669                                 rc, phba->pport->port_state);
4670                 mempool_free(mbox, phba->mbox_mem_pool);
4671                 return -EIO;
4672         }
4673
4674         spin_lock_irq(&phba->hbalock);
4675         phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
4676         spin_unlock_irq(&phba->hbalock);
4677
4678         return 0;
4679 }
4680
4681 /**
4682  * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
4683  * @phba: Pointer to hba context object.
4684  *
4685  * This function issues synchronous unregister FCF mailbox command to HBA to
4686  * unregister the currently registered FCF record. The driver does not reset
4687  * the driver FCF usage state flags.
4688  *
4689  * Return 0 if successfully issued, none-zero otherwise.
4690  */
4691 int
4692 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
4693 {
4694         LPFC_MBOXQ_t *mbox;
4695         int rc;
4696
4697         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4698         if (!mbox) {
4699                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4700                                 "2551 UNREG_FCFI mbox allocation failed"
4701                                 "HBA state x%x\n", phba->pport->port_state);
4702                 return -ENOMEM;
4703         }
4704         lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
4705         mbox->vport = phba->pport;
4706         mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
4707         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4708
4709         if (rc == MBX_NOT_FINISHED) {
4710                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4711                                 "2552 Unregister FCFI command failed rc x%x "
4712                                 "HBA state x%x\n",
4713                                 rc, phba->pport->port_state);
4714                 return -EINVAL;
4715         }
4716         return 0;
4717 }
4718
4719 /**
4720  * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
4721  * @phba: Pointer to hba context object.
4722  *
4723  * This function unregisters the currently reigstered FCF. This function
4724  * also tries to find another FCF for discovery by rescan the HBA FCF table.
4725  */
4726 void
4727 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
4728 {
4729         int rc;
4730
4731         /* Preparation for unregistering fcf */
4732         rc = lpfc_unregister_fcf_prep(phba);
4733         if (rc) {
4734                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
4735                                 "2748 Failed to prepare for unregistering "
4736                                 "HBA's FCF record: rc=%d\n", rc);
4737                 return;
4738         }
4739
4740         /* Now, unregister FCF record and reset HBA FCF state */
4741         rc = lpfc_sli4_unregister_fcf(phba);
4742         if (rc)
4743                 return;
4744         /* Reset HBA FCF states after successful unregister FCF */
4745         phba->fcf.fcf_flag = 0;
4746
4747         /*
4748          * If driver is not unloading, check if there is any other
4749          * FCF record that can be used for discovery.
4750          */
4751         if ((phba->pport->load_flag & FC_UNLOADING) ||
4752             (phba->link_state < LPFC_LINK_UP))
4753                 return;
4754
4755         rc = lpfc_sli4_read_fcf_record(phba, LPFC_FCOE_FCF_GET_FIRST);
4756
4757         if (rc)
4758                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4759                                 "2553 lpfc_unregister_unused_fcf failed "
4760                                 "to read FCF record HBA state x%x\n",
4761                                 phba->pport->port_state);
4762 }
4763
4764 /**
4765  * lpfc_unregister_fcf - Unregister the currently registered fcf record
4766  * @phba: Pointer to hba context object.
4767  *
4768  * This function just unregisters the currently reigstered FCF. It does not
4769  * try to find another FCF for discovery.
4770  */
4771 void
4772 lpfc_unregister_fcf(struct lpfc_hba *phba)
4773 {
4774         int rc;
4775
4776         /* Preparation for unregistering fcf */
4777         rc = lpfc_unregister_fcf_prep(phba);
4778         if (rc) {
4779                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
4780                                 "2749 Failed to prepare for unregistering "
4781                                 "HBA's FCF record: rc=%d\n", rc);
4782                 return;
4783         }
4784
4785         /* Now, unregister FCF record and reset HBA FCF state */
4786         rc = lpfc_sli4_unregister_fcf(phba);
4787         if (rc)
4788                 return;
4789         /* Set proper HBA FCF states after successful unregister FCF */
4790         spin_lock_irq(&phba->hbalock);
4791         phba->fcf.fcf_flag &= ~FCF_REGISTERED;
4792         spin_unlock_irq(&phba->hbalock);
4793 }
4794
4795 /**
4796  * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
4797  * @phba: Pointer to hba context object.
4798  *
4799  * This function check if there are any connected remote port for the FCF and
4800  * if all the devices are disconnected, this function unregister FCFI.
4801  * This function also tries to use another FCF for discovery.
4802  */
4803 void
4804 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
4805 {
4806         /*
4807          * If HBA is not running in FIP mode or if HBA does not support
4808          * FCoE or if FCF is not registered, do nothing.
4809          */
4810         spin_lock_irq(&phba->hbalock);
4811         if (!(phba->hba_flag & HBA_FCOE_SUPPORT) ||
4812             !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
4813             !(phba->hba_flag & HBA_FIP_SUPPORT)) {
4814                 spin_unlock_irq(&phba->hbalock);
4815                 return;
4816         }
4817         spin_unlock_irq(&phba->hbalock);
4818
4819         if (lpfc_fcf_inuse(phba))
4820                 return;
4821
4822         lpfc_unregister_fcf_rescan(phba);
4823 }
4824
4825 /**
4826  * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
4827  * @phba: Pointer to hba context object.
4828  * @buff: Buffer containing the FCF connection table as in the config
4829  *         region.
4830  * This function create driver data structure for the FCF connection
4831  * record table read from config region 23.
4832  */
4833 static void
4834 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
4835         uint8_t *buff)
4836 {
4837         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
4838         struct lpfc_fcf_conn_hdr *conn_hdr;
4839         struct lpfc_fcf_conn_rec *conn_rec;
4840         uint32_t record_count;
4841         int i;
4842
4843         /* Free the current connect table */
4844         list_for_each_entry_safe(conn_entry, next_conn_entry,
4845                 &phba->fcf_conn_rec_list, list) {
4846                 list_del_init(&conn_entry->list);
4847                 kfree(conn_entry);
4848         }
4849
4850         conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
4851         record_count = conn_hdr->length * sizeof(uint32_t)/
4852                 sizeof(struct lpfc_fcf_conn_rec);
4853
4854         conn_rec = (struct lpfc_fcf_conn_rec *)
4855                 (buff + sizeof(struct lpfc_fcf_conn_hdr));
4856
4857         for (i = 0; i < record_count; i++) {
4858                 if (!(conn_rec[i].flags & FCFCNCT_VALID))
4859                         continue;
4860                 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
4861                         GFP_KERNEL);
4862                 if (!conn_entry) {
4863                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4864                                 "2566 Failed to allocate connection"
4865                                 " table entry\n");
4866                         return;
4867                 }
4868
4869                 memcpy(&conn_entry->conn_rec, &conn_rec[i],
4870                         sizeof(struct lpfc_fcf_conn_rec));
4871                 conn_entry->conn_rec.vlan_tag =
4872                         le16_to_cpu(conn_entry->conn_rec.vlan_tag) & 0xFFF;
4873                 conn_entry->conn_rec.flags =
4874                         le16_to_cpu(conn_entry->conn_rec.flags);
4875                 list_add_tail(&conn_entry->list,
4876                         &phba->fcf_conn_rec_list);
4877         }
4878 }
4879
4880 /**
4881  * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
4882  * @phba: Pointer to hba context object.
4883  * @buff: Buffer containing the FCoE parameter data structure.
4884  *
4885  *  This function update driver data structure with config
4886  *  parameters read from config region 23.
4887  */
4888 static void
4889 lpfc_read_fcoe_param(struct lpfc_hba *phba,
4890                         uint8_t *buff)
4891 {
4892         struct lpfc_fip_param_hdr *fcoe_param_hdr;
4893         struct lpfc_fcoe_params *fcoe_param;
4894
4895         fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
4896                 buff;
4897         fcoe_param = (struct lpfc_fcoe_params *)
4898                 (buff + sizeof(struct lpfc_fip_param_hdr));
4899
4900         if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
4901                 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
4902                 return;
4903
4904         if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
4905                 phba->valid_vlan = 1;
4906                 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
4907                         0xFFF;
4908         }
4909
4910         phba->fc_map[0] = fcoe_param->fc_map[0];
4911         phba->fc_map[1] = fcoe_param->fc_map[1];
4912         phba->fc_map[2] = fcoe_param->fc_map[2];
4913         return;
4914 }
4915
4916 /**
4917  * lpfc_get_rec_conf23 - Get a record type in config region data.
4918  * @buff: Buffer containing config region 23 data.
4919  * @size: Size of the data buffer.
4920  * @rec_type: Record type to be searched.
4921  *
4922  * This function searches config region data to find the begining
4923  * of the record specified by record_type. If record found, this
4924  * function return pointer to the record else return NULL.
4925  */
4926 static uint8_t *
4927 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
4928 {
4929         uint32_t offset = 0, rec_length;
4930
4931         if ((buff[0] == LPFC_REGION23_LAST_REC) ||
4932                 (size < sizeof(uint32_t)))
4933                 return NULL;
4934
4935         rec_length = buff[offset + 1];
4936
4937         /*
4938          * One TLV record has one word header and number of data words
4939          * specified in the rec_length field of the record header.
4940          */
4941         while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
4942                 <= size) {
4943                 if (buff[offset] == rec_type)
4944                         return &buff[offset];
4945
4946                 if (buff[offset] == LPFC_REGION23_LAST_REC)
4947                         return NULL;
4948
4949                 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
4950                 rec_length = buff[offset + 1];
4951         }
4952         return NULL;
4953 }
4954
4955 /**
4956  * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
4957  * @phba: Pointer to lpfc_hba data structure.
4958  * @buff: Buffer containing config region 23 data.
4959  * @size: Size of the data buffer.
4960  *
4961  * This fuction parse the FCoE config parameters in config region 23 and
4962  * populate driver data structure with the parameters.
4963  */
4964 void
4965 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
4966                 uint8_t *buff,
4967                 uint32_t size)
4968 {
4969         uint32_t offset = 0, rec_length;
4970         uint8_t *rec_ptr;
4971
4972         /*
4973          * If data size is less than 2 words signature and version cannot be
4974          * verified.
4975          */
4976         if (size < 2*sizeof(uint32_t))
4977                 return;
4978
4979         /* Check the region signature first */
4980         if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
4981                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4982                         "2567 Config region 23 has bad signature\n");
4983                 return;
4984         }
4985
4986         offset += 4;
4987
4988         /* Check the data structure version */
4989         if (buff[offset] != LPFC_REGION23_VERSION) {
4990                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4991                         "2568 Config region 23 has bad version\n");
4992                 return;
4993         }
4994         offset += 4;
4995
4996         rec_length = buff[offset + 1];
4997
4998         /* Read FCoE param record */
4999         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
5000                         size - offset, FCOE_PARAM_TYPE);
5001         if (rec_ptr)
5002                 lpfc_read_fcoe_param(phba, rec_ptr);
5003
5004         /* Read FCF connection table */
5005         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
5006                 size - offset, FCOE_CONN_TBL_TYPE);
5007         if (rec_ptr)
5008                 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
5009
5010 }