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   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
  65 void
  66 lpfc_terminate_rport_io(struct fc_rport *rport)
  67 {
  68         struct lpfc_rport_data *rdata;
  69         struct lpfc_nodelist * ndlp;
  70         struct lpfc_hba *phba;
  71
  72         rdata = rport->dd_data;
  73         ndlp = rdata->pnode;
  74
  75         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
  76                 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
  77                         printk(KERN_ERR "Cannot find remote node"
  78                         " to terminate I/O Data x%x\n",
  79                         rport->port_id);
  80                 return;
  81         }
  82
  83         phba  = ndlp->phba;
  84
  85         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
  86                 "rport terminate: sid:x%x did:x%x flg:x%x",
  87                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
  88
  89         if (ndlp->nlp_sid != NLP_NO_SID) {
  90                 lpfc_sli_abort_iocb(ndlp->vport,
  91                         &phba->sli.ring[phba->sli.fcp_ring],
  92                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
  93         }
  94 }
  95
  96 /*
  97  * This function will be called when dev_loss_tmo fire.
  98  */
  99 void
 100 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
 101 {
 102         struct lpfc_rport_data *rdata;
 103         struct lpfc_nodelist * ndlp;
 104         struct lpfc_vport *vport;
 105         struct lpfc_hba   *phba;
 106         struct lpfc_work_evt *evtp;
 107         int  put_node;
 108         int  put_rport;
 109
 110         rdata = rport->dd_data;
 111         ndlp = rdata->pnode;
 112         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
 113                 return;
 114
 115         vport = ndlp->vport;
 116         phba  = vport->phba;
 117
 118         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 119                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
 120                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 121
 122         /* Don't defer this if we are in the process of deleting the vport
 123          * or unloading the driver. The unload will cleanup the node
 124          * appropriately we just need to cleanup the ndlp rport info here.
 125          */
 126         if (vport->load_flag & FC_UNLOADING) {
 127                 put_node = rdata->pnode != NULL;
 128                 put_rport = ndlp->rport != NULL;
 129                 rdata->pnode = NULL;
 130                 ndlp->rport = NULL;
 131                 if (put_node)
 132                         lpfc_nlp_put(ndlp);
 133                 if (put_rport)
 134                         put_device(&rport->dev);
 135                 return;
 136         }
 137
 138         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 139                 return;
 140
 141         evtp = &ndlp->dev_loss_evt;
 142
 143         if (!list_empty(&evtp->evt_listp))
 144                 return;
 145
 146         spin_lock_irq(&phba->hbalock);
 147         /* We need to hold the node by incrementing the reference
 148          * count until this queued work is done
 149          */
 150         evtp->evt_arg1  = lpfc_nlp_get(ndlp);
 151         if (evtp->evt_arg1) {
 152                 evtp->evt = LPFC_EVT_DEV_LOSS;
 153                 list_add_tail(&evtp->evt_listp, &phba->work_list);
 154                 lpfc_worker_wake_up(phba);
 155         }
 156         spin_unlock_irq(&phba->hbalock);
 157
 158         return;
 159 }
 160
 161 /*
 162  * This function is called from the worker thread when dev_loss_tmo
 163  * expire.
 164  */
 165 static void
 166 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 167 {
 168         struct lpfc_rport_data *rdata;
 169         struct fc_rport   *rport;
 170         struct lpfc_vport *vport;
 171         struct lpfc_hba   *phba;
 172         uint8_t *name;
 173         int  put_node;
 174         int  put_rport;
 175         int warn_on = 0;
 176
 177         rport = ndlp->rport;
 178
 179         if (!rport)
 180                 return;
 181
 182         rdata = rport->dd_data;
 183         name = (uint8_t *) &ndlp->nlp_portname;
 184         vport = ndlp->vport;
 185         phba  = vport->phba;
 186
 187         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 188                 "rport devlosstmo:did:x%x type:x%x id:x%x",
 189                 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
 190
 191         /* Don't defer this if we are in the process of deleting the vport
 192          * or unloading the driver. The unload will cleanup the node
 193          * appropriately we just need to cleanup the ndlp rport info here.
 194          */
 195         if (vport->load_flag & FC_UNLOADING) {
 196                 if (ndlp->nlp_sid != NLP_NO_SID) {
 197                         /* flush the target */
 198                         lpfc_sli_abort_iocb(vport,
 199                                         &phba->sli.ring[phba->sli.fcp_ring],
 200                                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 201                 }
 202                 put_node = rdata->pnode != NULL;
 203                 put_rport = ndlp->rport != NULL;
 204                 rdata->pnode = NULL;
 205                 ndlp->rport = NULL;
 206                 if (put_node)
 207                         lpfc_nlp_put(ndlp);
 208                 if (put_rport)
 209                         put_device(&rport->dev);
 210                 return;
 211         }
 212
 213         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
 214                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 215                                  "0284 Devloss timeout Ignored on "
 216                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 217                                  "NPort x%x\n",
 218                                  *name, *(name+1), *(name+2), *(name+3),
 219                                  *(name+4), *(name+5), *(name+6), *(name+7),
 220                                  ndlp->nlp_DID);
 221                 return;
 222         }
 223
 224         if (ndlp->nlp_type & NLP_FABRIC) {
 225                 /* We will clean up these Nodes in linkup */
 226                 put_node = rdata->pnode != NULL;
 227                 put_rport = ndlp->rport != NULL;
 228                 rdata->pnode = NULL;
 229                 ndlp->rport = NULL;
 230                 if (put_node)
 231                         lpfc_nlp_put(ndlp);
 232                 if (put_rport)
 233                         put_device(&rport->dev);
 234                 return;
 235         }
 236
 237         if (ndlp->nlp_sid != NLP_NO_SID) {
 238                 warn_on = 1;
 239                 /* flush the target */
 240                 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
 241                                     ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 242         }
 243
 244         if (warn_on) {
 245                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 246                                  "0203 Devloss timeout on "
 247                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 248                                  "NPort x%06x Data: x%x x%x x%x\n",
 249                                  *name, *(name+1), *(name+2), *(name+3),
 250                                  *(name+4), *(name+5), *(name+6), *(name+7),
 251                                  ndlp->nlp_DID, ndlp->nlp_flag,
 252                                  ndlp->nlp_state, ndlp->nlp_rpi);
 253         } else {
 254                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 255                                  "0204 Devloss timeout on "
 256                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 257                                  "NPort x%06x Data: x%x x%x x%x\n",
 258                                  *name, *(name+1), *(name+2), *(name+3),
 259                                  *(name+4), *(name+5), *(name+6), *(name+7),
 260                                  ndlp->nlp_DID, ndlp->nlp_flag,
 261                                  ndlp->nlp_state, ndlp->nlp_rpi);
 262         }
 263
 264         put_node = rdata->pnode != NULL;
 265         put_rport = ndlp->rport != NULL;
 266         rdata->pnode = NULL;
 267         ndlp->rport = NULL;
 268         if (put_node)
 269                 lpfc_nlp_put(ndlp);
 270         if (put_rport)
 271                 put_device(&rport->dev);
 272
 273         if (!(vport->load_flag & FC_UNLOADING) &&
 274             !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
 275             !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 276             (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE))
 277                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 278
 279         lpfc_unregister_unused_fcf(phba);
 280 }
 281
 282 /**
 283  * lpfc_alloc_fast_evt - Allocates data structure for posting event
 284  * @phba: Pointer to hba context object.
 285  *
 286  * This function is called from the functions which need to post
 287  * events from interrupt context. This function allocates data
 288  * structure required for posting event. It also keeps track of
 289  * number of events pending and prevent event storm when there are
 290  * too many events.
 291  **/
 292 struct lpfc_fast_path_event *
 293 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
 294         struct lpfc_fast_path_event *ret;
 295
 296         /* If there are lot of fast event do not exhaust memory due to this */
 297         if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
 298                 return NULL;
 299
 300         ret = kzalloc(sizeof(struct lpfc_fast_path_event),
 301                         GFP_ATOMIC);
 302         if (ret) {
 303                 atomic_inc(&phba->fast_event_count);
 304                 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
 305                 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
 306         }
 307         return ret;
 308 }
 309
 310 /**
 311  * lpfc_free_fast_evt - Frees event data structure
 312  * @phba: Pointer to hba context object.
 313  * @evt:  Event object which need to be freed.
 314  *
 315  * This function frees the data structure required for posting
 316  * events.
 317  **/
 318 void
 319 lpfc_free_fast_evt(struct lpfc_hba *phba,
 320                 struct lpfc_fast_path_event *evt) {
 321
 322         atomic_dec(&phba->fast_event_count);
 323         kfree(evt);
 324 }
 325
 326 /**
 327  * lpfc_send_fastpath_evt - Posts events generated from fast path
 328  * @phba: Pointer to hba context object.
 329  * @evtp: Event data structure.
 330  *
 331  * This function is called from worker thread, when the interrupt
 332  * context need to post an event. This function posts the event
 333  * to fc transport netlink interface.
 334  **/
 335 static void
 336 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
 337                 struct lpfc_work_evt *evtp)
 338 {
 339         unsigned long evt_category, evt_sub_category;
 340         struct lpfc_fast_path_event *fast_evt_data;
 341         char *evt_data;
 342         uint32_t evt_data_size;
 343         struct Scsi_Host *shost;
 344
 345         fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
 346                 work_evt);
 347
 348         evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
 349         evt_sub_category = (unsigned long) fast_evt_data->un.
 350                         fabric_evt.subcategory;
 351         shost = lpfc_shost_from_vport(fast_evt_data->vport);
 352         if (evt_category == FC_REG_FABRIC_EVENT) {
 353                 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
 354                         evt_data = (char *) &fast_evt_data->un.read_check_error;
 355                         evt_data_size = sizeof(fast_evt_data->un.
 356                                 read_check_error);
 357                 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
 358                         (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
 359                         evt_data = (char *) &fast_evt_data->un.fabric_evt;
 360                         evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
 361                 } else {
 362                         lpfc_free_fast_evt(phba, fast_evt_data);
 363                         return;
 364                 }
 365         } else if (evt_category == FC_REG_SCSI_EVENT) {
 366                 switch (evt_sub_category) {
 367                 case LPFC_EVENT_QFULL:
 368                 case LPFC_EVENT_DEVBSY:
 369                         evt_data = (char *) &fast_evt_data->un.scsi_evt;
 370                         evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
 371                         break;
 372                 case LPFC_EVENT_CHECK_COND:
 373                         evt_data = (char *) &fast_evt_data->un.check_cond_evt;
 374                         evt_data_size =  sizeof(fast_evt_data->un.
 375                                 check_cond_evt);
 376                         break;
 377                 case LPFC_EVENT_VARQUEDEPTH:
 378                         evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
 379                         evt_data_size = sizeof(fast_evt_data->un.
 380                                 queue_depth_evt);
 381                         break;
 382                 default:
 383                         lpfc_free_fast_evt(phba, fast_evt_data);
 384                         return;
 385                 }
 386         } else {
 387                 lpfc_free_fast_evt(phba, fast_evt_data);
 388                 return;
 389         }
 390
 391         fc_host_post_vendor_event(shost,
 392                 fc_get_event_number(),
 393                 evt_data_size,
 394                 evt_data,
 395                 LPFC_NL_VENDOR_ID);
 396
 397         lpfc_free_fast_evt(phba, fast_evt_data);
 398         return;
 399 }
 400
 401 static void
 402 lpfc_work_list_done(struct lpfc_hba *phba)
 403 {
 404         struct lpfc_work_evt  *evtp = NULL;
 405         struct lpfc_nodelist  *ndlp;
 406         int free_evt;
 407
 408         spin_lock_irq(&phba->hbalock);
 409         while (!list_empty(&phba->work_list)) {
 410                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 411                                  evt_listp);
 412                 spin_unlock_irq(&phba->hbalock);
 413                 free_evt = 1;
 414                 switch (evtp->evt) {
 415                 case LPFC_EVT_ELS_RETRY:
 416                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 417                         lpfc_els_retry_delay_handler(ndlp);
 418                         free_evt = 0; /* evt is part of ndlp */
 419                         /* decrement the node reference count held
 420                          * for this queued work
 421                          */
 422                         lpfc_nlp_put(ndlp);
 423                         break;
 424                 case LPFC_EVT_DEV_LOSS:
 425                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 426                         lpfc_dev_loss_tmo_handler(ndlp);
 427                         free_evt = 0;
 428                         /* decrement the node reference count held for
 429                          * this queued work
 430                          */
 431                         lpfc_nlp_put(ndlp);
 432                         break;
 433                 case LPFC_EVT_ONLINE:
 434                         if (phba->link_state < LPFC_LINK_DOWN)
 435                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 436                         else
 437                                 *(int *) (evtp->evt_arg1) = 0;
 438                         complete((struct completion *)(evtp->evt_arg2));
 439                         break;
 440                 case LPFC_EVT_OFFLINE_PREP:
 441                         if (phba->link_state >= LPFC_LINK_DOWN)
 442                                 lpfc_offline_prep(phba);
 443                         *(int *)(evtp->evt_arg1) = 0;
 444                         complete((struct completion *)(evtp->evt_arg2));
 445                         break;
 446                 case LPFC_EVT_OFFLINE:
 447                         lpfc_offline(phba);
 448                         lpfc_sli_brdrestart(phba);
 449                         *(int *)(evtp->evt_arg1) =
 450                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 451                         lpfc_unblock_mgmt_io(phba);
 452                         complete((struct completion *)(evtp->evt_arg2));
 453                         break;
 454                 case LPFC_EVT_WARM_START:
 455                         lpfc_offline(phba);
 456                         lpfc_reset_barrier(phba);
 457                         lpfc_sli_brdreset(phba);
 458                         lpfc_hba_down_post(phba);
 459                         *(int *)(evtp->evt_arg1) =
 460                                 lpfc_sli_brdready(phba, HS_MBRDY);
 461                         lpfc_unblock_mgmt_io(phba);
 462                         complete((struct completion *)(evtp->evt_arg2));
 463                         break;
 464                 case LPFC_EVT_KILL:
 465                         lpfc_offline(phba);
 466                         *(int *)(evtp->evt_arg1)
 467                                 = (phba->pport->stopped)
 468                                         ? 0 : lpfc_sli_brdkill(phba);
 469                         lpfc_unblock_mgmt_io(phba);
 470                         complete((struct completion *)(evtp->evt_arg2));
 471                         break;
 472                 case LPFC_EVT_FASTPATH_MGMT_EVT:
 473                         lpfc_send_fastpath_evt(phba, evtp);
 474                         free_evt = 0;
 475                         break;
 476                 }
 477                 if (free_evt)
 478                         kfree(evtp);
 479                 spin_lock_irq(&phba->hbalock);
 480         }
 481         spin_unlock_irq(&phba->hbalock);
 482
 483 }
 484
 485 static void
 486 lpfc_work_done(struct lpfc_hba *phba)
 487 {
 488         struct lpfc_sli_ring *pring;
 489         uint32_t ha_copy, status, control, work_port_events;
 490         struct lpfc_vport **vports;
 491         struct lpfc_vport *vport;
 492         int i;
 493
 494         spin_lock_irq(&phba->hbalock);
 495         ha_copy = phba->work_ha;
 496         phba->work_ha = 0;
 497         spin_unlock_irq(&phba->hbalock);
 498
 499         /* First, try to post the next mailbox command to SLI4 device */
 500         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
 501                 lpfc_sli4_post_async_mbox(phba);
 502
 503         if (ha_copy & HA_ERATT)
 504                 /* Handle the error attention event */
 505                 lpfc_handle_eratt(phba);
 506
 507         if (ha_copy & HA_MBATT)
 508                 lpfc_sli_handle_mb_event(phba);
 509
 510         if (ha_copy & HA_LATT)
 511                 lpfc_handle_latt(phba);
 512
 513         /* Process SLI4 events */
 514         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
 515                 if (phba->hba_flag & FCP_XRI_ABORT_EVENT)
 516                         lpfc_sli4_fcp_xri_abort_event_proc(phba);
 517                 if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
 518                         lpfc_sli4_els_xri_abort_event_proc(phba);
 519                 if (phba->hba_flag & ASYNC_EVENT)
 520                         lpfc_sli4_async_event_proc(phba);
 521                 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
 522                         spin_lock_irq(&phba->hbalock);
 523                         phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
 524                         spin_unlock_irq(&phba->hbalock);
 525                         lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
 526                 }
 527                 if (phba->hba_flag & HBA_RECEIVE_BUFFER)
 528                         lpfc_sli4_handle_received_buffer(phba);
 529         }
 530
 531         vports = lpfc_create_vport_work_array(phba);
 532         if (vports != NULL)
 533                 for (i = 0; i <= phba->max_vports; i++) {
 534                         /*
 535                          * We could have no vports in array if unloading, so if
 536                          * this happens then just use the pport
 537                          */
 538                         if (vports[i] == NULL && i == 0)
 539                                 vport = phba->pport;
 540                         else
 541                                 vport = vports[i];
 542                         if (vport == NULL)
 543                                 break;
 544                         spin_lock_irq(&vport->work_port_lock);
 545                         work_port_events = vport->work_port_events;
 546                         vport->work_port_events &= ~work_port_events;
 547                         spin_unlock_irq(&vport->work_port_lock);
 548                         if (work_port_events & WORKER_DISC_TMO)
 549                                 lpfc_disc_timeout_handler(vport);
 550                         if (work_port_events & WORKER_ELS_TMO)
 551                                 lpfc_els_timeout_handler(vport);
 552                         if (work_port_events & WORKER_HB_TMO)
 553                                 lpfc_hb_timeout_handler(phba);
 554                         if (work_port_events & WORKER_MBOX_TMO)
 555                                 lpfc_mbox_timeout_handler(phba);
 556                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
 557                                 lpfc_unblock_fabric_iocbs(phba);
 558                         if (work_port_events & WORKER_FDMI_TMO)
 559                                 lpfc_fdmi_timeout_handler(vport);
 560                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
 561                                 lpfc_ramp_down_queue_handler(phba);
 562                         if (work_port_events & WORKER_RAMP_UP_QUEUE)
 563                                 lpfc_ramp_up_queue_handler(phba);
 564                 }
 565         lpfc_destroy_vport_work_array(phba, vports);
 566
 567         pring = &phba->sli.ring[LPFC_ELS_RING];
 568         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
 569         status >>= (4*LPFC_ELS_RING);
 570         if ((status & HA_RXMASK)
 571                 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
 572                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
 573                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
 574                         /* Set the lpfc data pending flag */
 575                         set_bit(LPFC_DATA_READY, &phba->data_flags);
 576                 } else {
 577                         pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
 578                         lpfc_sli_handle_slow_ring_event(phba, pring,
 579                                                         (status &
 580                                                          HA_RXMASK));
 581                 }
 582                 /*
 583                  * Turn on Ring interrupts
 584                  */
 585                 if (phba->sli_rev <= LPFC_SLI_REV3) {
 586                         spin_lock_irq(&phba->hbalock);
 587                         control = readl(phba->HCregaddr);
 588                         if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
 589                                 lpfc_debugfs_slow_ring_trc(phba,
 590                                         "WRK Enable ring: cntl:x%x hacopy:x%x",
 591                                         control, ha_copy, 0);
 592
 593                                 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
 594                                 writel(control, phba->HCregaddr);
 595                                 readl(phba->HCregaddr); /* flush */
 596                         } else {
 597                                 lpfc_debugfs_slow_ring_trc(phba,
 598                                         "WRK Ring ok:     cntl:x%x hacopy:x%x",
 599                                         control, ha_copy, 0);
 600                         }
 601                         spin_unlock_irq(&phba->hbalock);
 602                 }
 603         }
 604         lpfc_work_list_done(phba);
 605 }
 606
 607 int
 608 lpfc_do_work(void *p)
 609 {
 610         struct lpfc_hba *phba = p;
 611         int rc;
 612
 613         set_user_nice(current, -20);
 614         phba->data_flags = 0;
 615
 616         while (!kthread_should_stop()) {
 617                 /* wait and check worker queue activities */
 618                 rc = wait_event_interruptible(phba->work_waitq,
 619                                         (test_and_clear_bit(LPFC_DATA_READY,
 620                                                             &phba->data_flags)
 621                                          || kthread_should_stop()));
 622                 /* Signal wakeup shall terminate the worker thread */
 623                 if (rc) {
 624                         lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
 625                                         "0433 Wakeup on signal: rc=x%x\n", rc);
 626                         break;
 627                 }
 628
 629                 /* Attend pending lpfc data processing */
 630                 lpfc_work_done(phba);
 631         }
 632         phba->worker_thread = NULL;
 633         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
 634                         "0432 Worker thread stopped.\n");
 635         return 0;
 636 }
 637
 638 /*
 639  * This is only called to handle FC worker events. Since this a rare
 640  * occurance, we allocate a struct lpfc_work_evt structure here instead of
 641  * embedding it in the IOCB.
 642  */
 643 int
 644 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
 645                       uint32_t evt)
 646 {
 647         struct lpfc_work_evt  *evtp;
 648         unsigned long flags;
 649
 650         /*
 651          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
 652          * be queued to worker thread for processing
 653          */
 654         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
 655         if (!evtp)
 656                 return 0;
 657
 658         evtp->evt_arg1  = arg1;
 659         evtp->evt_arg2  = arg2;
 660         evtp->evt       = evt;
 661
 662         spin_lock_irqsave(&phba->hbalock, flags);
 663         list_add_tail(&evtp->evt_listp, &phba->work_list);
 664         spin_unlock_irqrestore(&phba->hbalock, flags);
 665
 666         lpfc_worker_wake_up(phba);
 667
 668         return 1;
 669 }
 670
 671 void
 672 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
 673 {
 674         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 675         struct lpfc_hba  *phba = vport->phba;
 676         struct lpfc_nodelist *ndlp, *next_ndlp;
 677         int  rc;
 678
 679         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
 680                 if (!NLP_CHK_NODE_ACT(ndlp))
 681                         continue;
 682                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 683                         continue;
 684                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
 685                         ((vport->port_type == LPFC_NPIV_PORT) &&
 686                         (ndlp->nlp_DID == NameServer_DID)))
 687                         lpfc_unreg_rpi(vport, ndlp);
 688
 689                 /* Leave Fabric nodes alone on link down */
 690                 if (!remove && ndlp->nlp_type & NLP_FABRIC)
 691                         continue;
 692                 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
 693                                              remove
 694                                              ? NLP_EVT_DEVICE_RM
 695                                              : NLP_EVT_DEVICE_RECOVERY);
 696         }
 697         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
 698                 lpfc_mbx_unreg_vpi(vport);
 699                 spin_lock_irq(shost->host_lock);
 700                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
 701                 spin_unlock_irq(shost->host_lock);
 702         }
 703 }
 704
 705 void
 706 lpfc_port_link_failure(struct lpfc_vport *vport)
 707 {
 708         /* Cleanup any outstanding RSCN activity */
 709         lpfc_els_flush_rscn(vport);
 710
 711         /* Cleanup any outstanding ELS commands */
 712         lpfc_els_flush_cmd(vport);
 713
 714         lpfc_cleanup_rpis(vport, 0);
 715
 716         /* Turn off discovery timer if its running */
 717         lpfc_can_disctmo(vport);
 718 }
 719
 720 void
 721 lpfc_linkdown_port(struct lpfc_vport *vport)
 722 {
 723         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 724
 725         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
 726
 727         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 728                 "Link Down:       state:x%x rtry:x%x flg:x%x",
 729                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
 730
 731         lpfc_port_link_failure(vport);
 732
 733 }
 734
 735 int
 736 lpfc_linkdown(struct lpfc_hba *phba)
 737 {
 738         struct lpfc_vport *vport = phba->pport;
 739         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 740         struct lpfc_vport **vports;
 741         LPFC_MBOXQ_t          *mb;
 742         int i;
 743
 744         if (phba->link_state == LPFC_LINK_DOWN)
 745                 return 0;
 746         spin_lock_irq(&phba->hbalock);
 747         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_DISCOVERED);
 748         if (phba->link_state > LPFC_LINK_DOWN) {
 749                 phba->link_state = LPFC_LINK_DOWN;
 750                 phba->pport->fc_flag &= ~FC_LBIT;
 751         }
 752         spin_unlock_irq(&phba->hbalock);
 753         vports = lpfc_create_vport_work_array(phba);
 754         if (vports != NULL)
 755                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
 756                         /* Issue a LINK DOWN event to all nodes */
 757                         lpfc_linkdown_port(vports[i]);
 758                 }
 759         lpfc_destroy_vport_work_array(phba, vports);
 760         /* Clean up any firmware default rpi's */
 761         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 762         if (mb) {
 763                 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
 764                 mb->vport = vport;
 765                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 766                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 767                     == MBX_NOT_FINISHED) {
 768                         mempool_free(mb, phba->mbox_mem_pool);
 769                 }
 770         }
 771
 772         /* Setup myDID for link up if we are in pt2pt mode */
 773         if (phba->pport->fc_flag & FC_PT2PT) {
 774                 phba->pport->fc_myDID = 0;
 775                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 776                 if (mb) {
 777                         lpfc_config_link(phba, mb);
 778                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 779                         mb->vport = vport;
 780                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 781                             == MBX_NOT_FINISHED) {
 782                                 mempool_free(mb, phba->mbox_mem_pool);
 783                         }
 784                 }
 785                 spin_lock_irq(shost->host_lock);
 786                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
 787                 spin_unlock_irq(shost->host_lock);
 788         }
 789
 790         return 0;
 791 }
 792
 793 static void
 794 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
 795 {
 796         struct lpfc_nodelist *ndlp;
 797
 798         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
 799                 if (!NLP_CHK_NODE_ACT(ndlp))
 800                         continue;
 801                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 802                         continue;
 803                 if (ndlp->nlp_type & NLP_FABRIC) {
 804                         /* On Linkup its safe to clean up the ndlp
 805                          * from Fabric connections.
 806                          */
 807                         if (ndlp->nlp_DID != Fabric_DID)
 808                                 lpfc_unreg_rpi(vport, ndlp);
 809                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 810                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
 811                         /* Fail outstanding IO now since device is
 812                          * marked for PLOGI.
 813                          */
 814                         lpfc_unreg_rpi(vport, ndlp);
 815                 }
 816         }
 817 }
 818
 819 static void
 820 lpfc_linkup_port(struct lpfc_vport *vport)
 821 {
 822         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 823         struct lpfc_hba  *phba = vport->phba;
 824
 825         if ((vport->load_flag & FC_UNLOADING) != 0)
 826                 return;
 827
 828         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 829                 "Link Up:         top:x%x speed:x%x flg:x%x",
 830                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
 831
 832         /* If NPIV is not enabled, only bring the physical port up */
 833         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 834                 (vport != phba->pport))
 835                 return;
 836
 837         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
 838
 839         spin_lock_irq(shost->host_lock);
 840         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
 841                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
 842         vport->fc_flag |= FC_NDISC_ACTIVE;
 843         vport->fc_ns_retry = 0;
 844         spin_unlock_irq(shost->host_lock);
 845
 846         if (vport->fc_flag & FC_LBIT)
 847                 lpfc_linkup_cleanup_nodes(vport);
 848
 849 }
 850
 851 static int
 852 lpfc_linkup(struct lpfc_hba *phba)
 853 {
 854         struct lpfc_vport **vports;
 855         int i;
 856
 857         phba->link_state = LPFC_LINK_UP;
 858
 859         /* Unblock fabric iocbs if they are blocked */
 860         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
 861         del_timer_sync(&phba->fabric_block_timer);
 862
 863         vports = lpfc_create_vport_work_array(phba);
 864         if (vports != NULL)
 865                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
 866                         lpfc_linkup_port(vports[i]);
 867         lpfc_destroy_vport_work_array(phba, vports);
 868         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 869             (phba->sli_rev < LPFC_SLI_REV4))
 870                 lpfc_issue_clear_la(phba, phba->pport);
 871
 872         return 0;
 873 }
 874
 875 /*
 876  * This routine handles processing a CLEAR_LA mailbox
 877  * command upon completion. It is setup in the LPFC_MBOXQ
 878  * as the completion routine when the command is
 879  * handed off to the SLI layer.
 880  */
 881 static void
 882 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 883 {
 884         struct lpfc_vport *vport = pmb->vport;
 885         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 886         struct lpfc_sli   *psli = &phba->sli;
 887         MAILBOX_t *mb = &pmb->u.mb;
 888         uint32_t control;
 889
 890         /* Since we don't do discovery right now, turn these off here */
 891         psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 892         psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 893         psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 894
 895         /* Check for error */
 896         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
 897                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
 898                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 899                                  "0320 CLEAR_LA mbxStatus error x%x hba "
 900                                  "state x%x\n",
 901                                  mb->mbxStatus, vport->port_state);
 902                 phba->link_state = LPFC_HBA_ERROR;
 903                 goto out;
 904         }
 905
 906         if (vport->port_type == LPFC_PHYSICAL_PORT)
 907                 phba->link_state = LPFC_HBA_READY;
 908
 909         spin_lock_irq(&phba->hbalock);
 910         psli->sli_flag |= LPFC_PROCESS_LA;
 911         control = readl(phba->HCregaddr);
 912         control |= HC_LAINT_ENA;
 913         writel(control, phba->HCregaddr);
 914         readl(phba->HCregaddr); /* flush */
 915         spin_unlock_irq(&phba->hbalock);
 916         mempool_free(pmb, phba->mbox_mem_pool);
 917         return;
 918
 919 out:
 920         /* Device Discovery completes */
 921         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 922                          "0225 Device Discovery completes\n");
 923         mempool_free(pmb, phba->mbox_mem_pool);
 924
 925         spin_lock_irq(shost->host_lock);
 926         vport->fc_flag &= ~FC_ABORT_DISCOVERY;
 927         spin_unlock_irq(shost->host_lock);
 928
 929         lpfc_can_disctmo(vport);
 930
 931         /* turn on Link Attention interrupts */
 932
 933         spin_lock_irq(&phba->hbalock);
 934         psli->sli_flag |= LPFC_PROCESS_LA;
 935         control = readl(phba->HCregaddr);
 936         control |= HC_LAINT_ENA;
 937         writel(control, phba->HCregaddr);
 938         readl(phba->HCregaddr); /* flush */
 939         spin_unlock_irq(&phba->hbalock);
 940
 941         return;
 942 }
 943
 944
 945 static void
 946 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 947 {
 948         struct lpfc_vport *vport = pmb->vport;
 949
 950         if (pmb->u.mb.mbxStatus)
 951                 goto out;
 952
 953         mempool_free(pmb, phba->mbox_mem_pool);
 954
 955         if (phba->fc_topology == TOPOLOGY_LOOP &&
 956             vport->fc_flag & FC_PUBLIC_LOOP &&
 957             !(vport->fc_flag & FC_LBIT)) {
 958                         /* Need to wait for FAN - use discovery timer
 959                          * for timeout.  port_state is identically
 960                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
 961                          */
 962                         lpfc_set_disctmo(vport);
 963                         return;
 964         }
 965
 966         /* Start discovery by sending a FLOGI. port_state is identically
 967          * LPFC_FLOGI while waiting for FLOGI cmpl
 968          */
 969         if (vport->port_state != LPFC_FLOGI) {
 970                 lpfc_initial_flogi(vport);
 971         }
 972         return;
 973
 974 out:
 975         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 976                          "0306 CONFIG_LINK mbxStatus error x%x "
 977                          "HBA state x%x\n",
 978                          pmb->u.mb.mbxStatus, vport->port_state);
 979         mempool_free(pmb, phba->mbox_mem_pool);
 980
 981         lpfc_linkdown(phba);
 982
 983         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 984                          "0200 CONFIG_LINK bad hba state x%x\n",
 985                          vport->port_state);
 986
 987         lpfc_issue_clear_la(phba, vport);
 988         return;
 989 }
 990
 991 static void
 992 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 993 {
 994         struct lpfc_vport *vport = mboxq->vport;
 995         unsigned long flags;
 996
 997         if (mboxq->u.mb.mbxStatus) {
 998                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 999                          "2017 REG_FCFI mbxStatus error x%x "
1000                          "HBA state x%x\n",
1001                          mboxq->u.mb.mbxStatus, vport->port_state);
1002                 mempool_free(mboxq, phba->mbox_mem_pool);
1003                 return;
1004         }
1005
1006         /* Start FCoE discovery by sending a FLOGI. */
1007         phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1008         /* Set the FCFI registered flag */
1009         spin_lock_irqsave(&phba->hbalock, flags);
1010         phba->fcf.fcf_flag |= FCF_REGISTERED;
1011         spin_unlock_irqrestore(&phba->hbalock, flags);
1012         if (vport->port_state != LPFC_FLOGI) {
1013                 spin_lock_irqsave(&phba->hbalock, flags);
1014                 phba->fcf.fcf_flag |= (FCF_DISCOVERED | FCF_IN_USE);
1015                 spin_unlock_irqrestore(&phba->hbalock, flags);
1016                 lpfc_initial_flogi(vport);
1017         }
1018
1019         mempool_free(mboxq, phba->mbox_mem_pool);
1020         return;
1021 }
1022
1023 /**
1024  * lpfc_fab_name_match - Check if the fcf fabric name match.
1025  * @fab_name: pointer to fabric name.
1026  * @new_fcf_record: pointer to fcf record.
1027  *
1028  * This routine compare the fcf record's fabric name with provided
1029  * fabric name. If the fabric name are identical this function
1030  * returns 1 else return 0.
1031  **/
1032 static uint32_t
1033 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1034 {
1035         if ((fab_name[0] ==
1036                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record)) &&
1037             (fab_name[1] ==
1038                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record)) &&
1039             (fab_name[2] ==
1040                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record)) &&
1041             (fab_name[3] ==
1042                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record)) &&
1043             (fab_name[4] ==
1044                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record)) &&
1045             (fab_name[5] ==
1046                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record)) &&
1047             (fab_name[6] ==
1048                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record)) &&
1049             (fab_name[7] ==
1050                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record)))
1051                 return 1;
1052         else
1053                 return 0;
1054 }
1055
1056 /**
1057  * lpfc_mac_addr_match - Check if the fcf mac address match.
1058  * @phba: pointer to lpfc hba data structure.
1059  * @new_fcf_record: pointer to fcf record.
1060  *
1061  * This routine compare the fcf record's mac address with HBA's
1062  * FCF mac address. If the mac addresses are identical this function
1063  * returns 1 else return 0.
1064  **/
1065 static uint32_t
1066 lpfc_mac_addr_match(struct lpfc_hba *phba, struct fcf_record *new_fcf_record)
1067 {
1068         if ((phba->fcf.mac_addr[0] ==
1069                 bf_get(lpfc_fcf_record_mac_0, new_fcf_record)) &&
1070             (phba->fcf.mac_addr[1] ==
1071                 bf_get(lpfc_fcf_record_mac_1, new_fcf_record)) &&
1072             (phba->fcf.mac_addr[2] ==
1073                 bf_get(lpfc_fcf_record_mac_2, new_fcf_record)) &&
1074             (phba->fcf.mac_addr[3] ==
1075                 bf_get(lpfc_fcf_record_mac_3, new_fcf_record)) &&
1076             (phba->fcf.mac_addr[4] ==
1077                 bf_get(lpfc_fcf_record_mac_4, new_fcf_record)) &&
1078             (phba->fcf.mac_addr[5] ==
1079                 bf_get(lpfc_fcf_record_mac_5, new_fcf_record)))
1080                 return 1;
1081         else
1082                 return 0;
1083 }
1084
1085 /**
1086  * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1087  * @phba: pointer to lpfc hba data structure.
1088  * @new_fcf_record: pointer to fcf record.
1089  *
1090  * This routine copies the FCF information from the FCF
1091  * record to lpfc_hba data structure.
1092  **/
1093 static void
1094 lpfc_copy_fcf_record(struct lpfc_hba *phba, struct fcf_record *new_fcf_record)
1095 {
1096         phba->fcf.fabric_name[0] =
1097                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1098         phba->fcf.fabric_name[1] =
1099                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1100         phba->fcf.fabric_name[2] =
1101                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1102         phba->fcf.fabric_name[3] =
1103                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1104         phba->fcf.fabric_name[4] =
1105                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1106         phba->fcf.fabric_name[5] =
1107                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1108         phba->fcf.fabric_name[6] =
1109                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1110         phba->fcf.fabric_name[7] =
1111                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1112         phba->fcf.mac_addr[0] =
1113                 bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1114         phba->fcf.mac_addr[1] =
1115                 bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1116         phba->fcf.mac_addr[2] =
1117                 bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1118         phba->fcf.mac_addr[3] =
1119                 bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1120         phba->fcf.mac_addr[4] =
1121                 bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1122         phba->fcf.mac_addr[5] =
1123                 bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1124         phba->fcf.fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1125         phba->fcf.priority = new_fcf_record->fip_priority;
1126 }
1127
1128 /**
1129  * lpfc_register_fcf - Register the FCF with hba.
1130  * @phba: pointer to lpfc hba data structure.
1131  *
1132  * This routine issues a register fcfi mailbox command to register
1133  * the fcf with HBA.
1134  **/
1135 static void
1136 lpfc_register_fcf(struct lpfc_hba *phba)
1137 {
1138         LPFC_MBOXQ_t *fcf_mbxq;
1139         int rc;
1140         unsigned long flags;
1141
1142         spin_lock_irqsave(&phba->hbalock, flags);
1143
1144         /* If the FCF is not availabe do nothing. */
1145         if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1146                 spin_unlock_irqrestore(&phba->hbalock, flags);
1147                 return;
1148         }
1149
1150         /* The FCF is already registered, start discovery */
1151         if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1152                 phba->fcf.fcf_flag |= (FCF_DISCOVERED | FCF_IN_USE);
1153                 spin_unlock_irqrestore(&phba->hbalock, flags);
1154                 if (phba->pport->port_state != LPFC_FLOGI)
1155                         lpfc_initial_flogi(phba->pport);
1156                 return;
1157         }
1158         spin_unlock_irqrestore(&phba->hbalock, flags);
1159
1160         fcf_mbxq = mempool_alloc(phba->mbox_mem_pool,
1161                 GFP_KERNEL);
1162         if (!fcf_mbxq)
1163                 return;
1164
1165         lpfc_reg_fcfi(phba, fcf_mbxq);
1166         fcf_mbxq->vport = phba->pport;
1167         fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1168         rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1169         if (rc == MBX_NOT_FINISHED)
1170                 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1171
1172         return;
1173 }
1174
1175 /**
1176  * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1177  * @phba: pointer to lpfc hba data structure.
1178  * @new_fcf_record: pointer to fcf record.
1179  * @boot_flag: Indicates if this record used by boot bios.
1180  * @addr_mode: The address mode to be used by this FCF
1181  *
1182  * This routine compare the fcf record with connect list obtained from the
1183  * config region to decide if this FCF can be used for SAN discovery. It returns
1184  * 1 if this record can be used for SAN discovery else return zero. If this FCF
1185  * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1186  * is used by boot bios and addr_mode will indicate the addressing mode to be
1187  * used for this FCF when the function returns.
1188  * If the FCF record need to be used with a particular vlan id, the vlan is
1189  * set in the vlan_id on return of the function. If not VLAN tagging need to
1190  * be used with the FCF vlan_id will be set to 0xFFFF;
1191  **/
1192 static int
1193 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1194                         struct fcf_record *new_fcf_record,
1195                         uint32_t *boot_flag, uint32_t *addr_mode,
1196                         uint16_t *vlan_id)
1197 {
1198         struct lpfc_fcf_conn_entry *conn_entry;
1199
1200         if (!phba->cfg_enable_fip) {
1201                 *boot_flag = 0;
1202                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1203                                 new_fcf_record);
1204                 if (phba->valid_vlan)
1205                         *vlan_id = phba->vlan_id;
1206                 else
1207                         *vlan_id = 0xFFFF;
1208                 return 1;
1209         }
1210
1211         /*
1212          * If there are no FCF connection table entry, driver connect to all
1213          * FCFs.
1214          */
1215         if (list_empty(&phba->fcf_conn_rec_list)) {
1216                 *boot_flag = 0;
1217                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1218                         new_fcf_record);
1219                 *vlan_id = 0xFFFF;
1220                 return 1;
1221         }
1222
1223         list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list, list) {
1224                 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1225                         continue;
1226
1227                 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1228                         !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1229                                 new_fcf_record))
1230                         continue;
1231
1232                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1233                         /*
1234                          * If the vlan bit map does not have the bit set for the
1235                          * vlan id to be used, then it is not a match.
1236                          */
1237                         if (!(new_fcf_record->vlan_bitmap
1238                                 [conn_entry->conn_rec.vlan_tag / 8] &
1239                                 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
1240                                 continue;
1241                 }
1242
1243                 /*
1244                  * Check if the connection record specifies a required
1245                  * addressing mode.
1246                  */
1247                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1248                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
1249
1250                         /*
1251                          * If SPMA required but FCF not support this continue.
1252                          */
1253                         if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1254                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1255                                         new_fcf_record) & LPFC_FCF_SPMA))
1256                                 continue;
1257
1258                         /*
1259                          * If FPMA required but FCF not support this continue.
1260                          */
1261                         if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1262                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1263                                 new_fcf_record) & LPFC_FCF_FPMA))
1264                                 continue;
1265                 }
1266
1267                 /*
1268                  * This fcf record matches filtering criteria.
1269                  */
1270                 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
1271                         *boot_flag = 1;
1272                 else
1273                         *boot_flag = 0;
1274
1275                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1276                                 new_fcf_record);
1277                 /*
1278                  * If the user specified a required address mode, assign that
1279                  * address mode
1280                  */
1281                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1282                         (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
1283                         *addr_mode = (conn_entry->conn_rec.flags &
1284                                 FCFCNCT_AM_SPMA) ?
1285                                 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
1286                 /*
1287                  * If the user specified a prefered address mode, use the
1288                  * addr mode only if FCF support the addr_mode.
1289                  */
1290                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1291                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1292                         (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1293                         (*addr_mode & LPFC_FCF_SPMA))
1294                                 *addr_mode = LPFC_FCF_SPMA;
1295                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1296                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1297                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1298                         (*addr_mode & LPFC_FCF_FPMA))
1299                                 *addr_mode = LPFC_FCF_FPMA;
1300                 /*
1301                  * If user did not specify any addressing mode, use FPMA if
1302                  * possible else use SPMA.
1303                  */
1304                 else if (*addr_mode & LPFC_FCF_FPMA)
1305                         *addr_mode = LPFC_FCF_FPMA;
1306
1307                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
1308                         *vlan_id = conn_entry->conn_rec.vlan_tag;
1309                 else
1310                         *vlan_id = 0xFFFF;
1311
1312                 return 1;
1313         }
1314
1315         return 0;
1316 }
1317
1318 /**
1319  * lpfc_mbx_cmpl_read_fcf_record - Completion handler for read_fcf mbox.
1320  * @phba: pointer to lpfc hba data structure.
1321  * @mboxq: pointer to mailbox object.
1322  *
1323  * This function iterate through all the fcf records available in
1324  * HBA and choose the optimal FCF record for discovery. After finding
1325  * the FCF for discovery it register the FCF record and kick start
1326  * discovery.
1327  * If FCF_IN_USE flag is set in currently used FCF, the routine try to
1328  * use a FCF record which match fabric name and mac address of the
1329  * currently used FCF record.
1330  * If the driver support only one FCF, it will try to use the FCF record
1331  * used by BOOT_BIOS.
1332  */
1333 void
1334 lpfc_mbx_cmpl_read_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1335 {
1336         void *virt_addr;
1337         dma_addr_t phys_addr;
1338         uint8_t *bytep;
1339         struct lpfc_mbx_sge sge;
1340         struct lpfc_mbx_read_fcf_tbl *read_fcf;
1341         uint32_t shdr_status, shdr_add_status;
1342         union lpfc_sli4_cfg_shdr *shdr;
1343         struct fcf_record *new_fcf_record;
1344         int rc;
1345         uint32_t boot_flag, addr_mode;
1346         uint32_t next_fcf_index;
1347         unsigned long flags;
1348         uint16_t vlan_id;
1349
1350         /* Get the first SGE entry from the non-embedded DMA memory. This
1351          * routine only uses a single SGE.
1352          */
1353         lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
1354         phys_addr = getPaddr(sge.pa_hi, sge.pa_lo);
1355         if (unlikely(!mboxq->sge_array)) {
1356                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1357                                 "2524 Failed to get the non-embedded SGE "
1358                                 "virtual address\n");
1359                 goto out;
1360         }
1361         virt_addr = mboxq->sge_array->addr[0];
1362
1363         shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
1364         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
1365         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
1366                                  &shdr->response);
1367         /*
1368          * The FCF Record was read and there is no reason for the driver
1369          * to maintain the FCF record data or memory. Instead, just need
1370          * to book keeping the FCFIs can be used.
1371          */
1372         if (shdr_status || shdr_add_status) {
1373                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1374                                 "2521 READ_FCF_RECORD mailbox failed "
1375                                 "with status x%x add_status x%x, mbx\n",
1376                                 shdr_status, shdr_add_status);
1377                 goto out;
1378         }
1379         /* Interpreting the returned information of FCF records */
1380         read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
1381         lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
1382                               sizeof(struct lpfc_mbx_read_fcf_tbl));
1383         next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
1384
1385         new_fcf_record = (struct fcf_record *)(virt_addr +
1386                           sizeof(struct lpfc_mbx_read_fcf_tbl));
1387         lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
1388                               sizeof(struct fcf_record));
1389         bytep = virt_addr + sizeof(union lpfc_sli4_cfg_shdr);
1390
1391         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record,
1392                                       &boot_flag, &addr_mode,
1393                                         &vlan_id);
1394         /*
1395          * If the fcf record does not match with connect list entries
1396          * read the next entry.
1397          */
1398         if (!rc)
1399                 goto read_next_fcf;
1400         /*
1401          * If this is not the first FCF discovery of the HBA, use last
1402          * FCF record for the discovery.
1403          */
1404         spin_lock_irqsave(&phba->hbalock, flags);
1405         if (phba->fcf.fcf_flag & FCF_IN_USE) {
1406                 if (lpfc_fab_name_match(phba->fcf.fabric_name,
1407                         new_fcf_record) &&
1408                     lpfc_mac_addr_match(phba, new_fcf_record)) {
1409                         phba->fcf.fcf_flag |= FCF_AVAILABLE;
1410                         spin_unlock_irqrestore(&phba->hbalock, flags);
1411                         goto out;
1412                 }
1413                 spin_unlock_irqrestore(&phba->hbalock, flags);
1414                 goto read_next_fcf;
1415         }
1416         if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
1417                 /*
1418                  * If the current FCF record does not have boot flag
1419                  * set and new fcf record has boot flag set, use the
1420                  * new fcf record.
1421                  */
1422                 if (boot_flag && !(phba->fcf.fcf_flag & FCF_BOOT_ENABLE)) {
1423                         /* Use this FCF record */
1424                         lpfc_copy_fcf_record(phba, new_fcf_record);
1425                         phba->fcf.addr_mode = addr_mode;
1426                         phba->fcf.fcf_flag |= FCF_BOOT_ENABLE;
1427                         if (vlan_id != 0xFFFF) {
1428                                 phba->fcf.fcf_flag |= FCF_VALID_VLAN;
1429                                 phba->fcf.vlan_id = vlan_id;
1430                         }
1431                         spin_unlock_irqrestore(&phba->hbalock, flags);
1432                         goto read_next_fcf;
1433                 }
1434                 /*
1435                  * If the current FCF record has boot flag set and the
1436                  * new FCF record does not have boot flag, read the next
1437                  * FCF record.
1438                  */
1439                 if (!boot_flag && (phba->fcf.fcf_flag & FCF_BOOT_ENABLE)) {
1440                         spin_unlock_irqrestore(&phba->hbalock, flags);
1441                         goto read_next_fcf;
1442                 }
1443                 /*
1444                  * If there is a record with lower priority value for
1445                  * the current FCF, use that record.
1446                  */
1447                 if (lpfc_fab_name_match(phba->fcf.fabric_name, new_fcf_record)
1448                         && (new_fcf_record->fip_priority <
1449                                 phba->fcf.priority)) {
1450                         /* Use this FCF record */
1451                         lpfc_copy_fcf_record(phba, new_fcf_record);
1452                         phba->fcf.addr_mode = addr_mode;
1453                         if (vlan_id != 0xFFFF) {
1454                                 phba->fcf.fcf_flag |= FCF_VALID_VLAN;
1455                                 phba->fcf.vlan_id = vlan_id;
1456                         }
1457                         spin_unlock_irqrestore(&phba->hbalock, flags);
1458                         goto read_next_fcf;
1459                 }
1460                 spin_unlock_irqrestore(&phba->hbalock, flags);
1461                 goto read_next_fcf;
1462         }
1463         /*
1464          * This is the first available FCF record, use this
1465          * record.
1466          */
1467         lpfc_copy_fcf_record(phba, new_fcf_record);
1468         phba->fcf.addr_mode = addr_mode;
1469         if (boot_flag)
1470                 phba->fcf.fcf_flag |= FCF_BOOT_ENABLE;
1471         phba->fcf.fcf_flag |= FCF_AVAILABLE;
1472         if (vlan_id != 0xFFFF) {
1473                 phba->fcf.fcf_flag |= FCF_VALID_VLAN;
1474                 phba->fcf.vlan_id = vlan_id;
1475         }
1476         spin_unlock_irqrestore(&phba->hbalock, flags);
1477         goto read_next_fcf;
1478
1479 read_next_fcf:
1480         lpfc_sli4_mbox_cmd_free(phba, mboxq);
1481         if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0)
1482                 lpfc_register_fcf(phba);
1483         else
1484                 lpfc_sli4_read_fcf_record(phba, next_fcf_index);
1485         return;
1486
1487 out:
1488         lpfc_sli4_mbox_cmd_free(phba, mboxq);
1489         lpfc_register_fcf(phba);
1490
1491         return;
1492 }
1493
1494 /**
1495  * lpfc_start_fdiscs - send fdiscs for each vports on this port.
1496  * @phba: pointer to lpfc hba data structure.
1497  *
1498  * This function loops through the list of vports on the @phba and issues an
1499  * FDISC if possible.
1500  */
1501 void
1502 lpfc_start_fdiscs(struct lpfc_hba *phba)
1503 {
1504         struct lpfc_vport **vports;
1505         int i;
1506
1507         vports = lpfc_create_vport_work_array(phba);
1508         if (vports != NULL) {
1509                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
1510                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1511                                 continue;
1512                         /* There are no vpi for this vport */
1513                         if (vports[i]->vpi > phba->max_vpi) {
1514                                 lpfc_vport_set_state(vports[i],
1515                                                      FC_VPORT_FAILED);
1516                                 continue;
1517                         }
1518                         if (phba->fc_topology == TOPOLOGY_LOOP) {
1519                                 lpfc_vport_set_state(vports[i],
1520                                                      FC_VPORT_LINKDOWN);
1521                                 continue;
1522                         }
1523                         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1524                                 lpfc_initial_fdisc(vports[i]);
1525                         else {
1526                                 lpfc_vport_set_state(vports[i],
1527                                                      FC_VPORT_NO_FABRIC_SUPP);
1528                                 lpfc_printf_vlog(vports[i], KERN_ERR,
1529                                                  LOG_ELS,
1530                                                  "0259 No NPIV "
1531                                                  "Fabric support\n");
1532                         }
1533                 }
1534         }
1535         lpfc_destroy_vport_work_array(phba, vports);
1536 }
1537
1538 void
1539 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1540 {
1541         struct lpfc_dmabuf *dmabuf = mboxq->context1;
1542         struct lpfc_vport *vport = mboxq->vport;
1543
1544         if (mboxq->u.mb.mbxStatus) {
1545                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1546                          "2018 REG_VFI mbxStatus error x%x "
1547                          "HBA state x%x\n",
1548                          mboxq->u.mb.mbxStatus, vport->port_state);
1549                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1550                         /* FLOGI failed, use loop map to make discovery list */
1551                         lpfc_disc_list_loopmap(vport);
1552                         /* Start discovery */
1553                         lpfc_disc_start(vport);
1554                         goto fail_free_mem;
1555                 }
1556                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1557                 goto fail_free_mem;
1558         }
1559         /* Mark the vport has registered with its VFI */
1560         vport->vfi_state |= LPFC_VFI_REGISTERED;
1561
1562         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
1563                 lpfc_start_fdiscs(phba);
1564                 lpfc_do_scr_ns_plogi(phba, vport);
1565         }
1566
1567 fail_free_mem:
1568         mempool_free(mboxq, phba->mbox_mem_pool);
1569         lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
1570         kfree(dmabuf);
1571         return;
1572 }
1573
1574 static void
1575 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1576 {
1577         MAILBOX_t *mb = &pmb->u.mb;
1578         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
1579         struct lpfc_vport  *vport = pmb->vport;
1580
1581
1582         /* Check for error */
1583         if (mb->mbxStatus) {
1584                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
1585                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1586                                  "0319 READ_SPARAM mbxStatus error x%x "
1587                                  "hba state x%x>\n",
1588                                  mb->mbxStatus, vport->port_state);
1589                 lpfc_linkdown(phba);
1590                 goto out;
1591         }
1592
1593         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
1594                sizeof (struct serv_parm));
1595         if (phba->cfg_soft_wwnn)
1596                 u64_to_wwn(phba->cfg_soft_wwnn,
1597                            vport->fc_sparam.nodeName.u.wwn);
1598         if (phba->cfg_soft_wwpn)
1599                 u64_to_wwn(phba->cfg_soft_wwpn,
1600                            vport->fc_sparam.portName.u.wwn);
1601         memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
1602                sizeof(vport->fc_nodename));
1603         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
1604                sizeof(vport->fc_portname));
1605         if (vport->port_type == LPFC_PHYSICAL_PORT) {
1606                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
1607                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
1608         }
1609
1610         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1611         kfree(mp);
1612         mempool_free(pmb, phba->mbox_mem_pool);
1613         return;
1614
1615 out:
1616         pmb->context1 = NULL;
1617         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1618         kfree(mp);
1619         lpfc_issue_clear_la(phba, vport);
1620         mempool_free(pmb, phba->mbox_mem_pool);
1621         return;
1622 }
1623
1624 static void
1625 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
1626 {
1627         struct lpfc_vport *vport = phba->pport;
1628         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
1629         int i;
1630         struct lpfc_dmabuf *mp;
1631         int rc;
1632         struct fcf_record *fcf_record;
1633
1634         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1635
1636         spin_lock_irq(&phba->hbalock);
1637         switch (la->UlnkSpeed) {
1638         case LA_1GHZ_LINK:
1639                 phba->fc_linkspeed = LA_1GHZ_LINK;
1640                 break;
1641         case LA_2GHZ_LINK:
1642                 phba->fc_linkspeed = LA_2GHZ_LINK;
1643                 break;
1644         case LA_4GHZ_LINK:
1645                 phba->fc_linkspeed = LA_4GHZ_LINK;
1646                 break;
1647         case LA_8GHZ_LINK:
1648                 phba->fc_linkspeed = LA_8GHZ_LINK;
1649                 break;
1650         case LA_10GHZ_LINK:
1651                 phba->fc_linkspeed = LA_10GHZ_LINK;
1652                 break;
1653         default:
1654                 phba->fc_linkspeed = LA_UNKNW_LINK;
1655                 break;
1656         }
1657
1658         phba->fc_topology = la->topology;
1659         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
1660
1661         if (phba->fc_topology == TOPOLOGY_LOOP) {
1662                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
1663
1664                 if (phba->cfg_enable_npiv)
1665                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1666                                 "1309 Link Up Event npiv not supported in loop "
1667                                 "topology\n");
1668                                 /* Get Loop Map information */
1669                 if (la->il)
1670                         vport->fc_flag |= FC_LBIT;
1671
1672                 vport->fc_myDID = la->granted_AL_PA;
1673                 i = la->un.lilpBde64.tus.f.bdeSize;
1674
1675                 if (i == 0) {
1676                         phba->alpa_map[0] = 0;
1677                 } else {
1678                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
1679                                 int numalpa, j, k;
1680                                 union {
1681                                         uint8_t pamap[16];
1682                                         struct {
1683                                                 uint32_t wd1;
1684                                                 uint32_t wd2;
1685                                                 uint32_t wd3;
1686                                                 uint32_t wd4;
1687                                         } pa;
1688                                 } un;
1689                                 numalpa = phba->alpa_map[0];
1690                                 j = 0;
1691                                 while (j < numalpa) {
1692                                         memset(un.pamap, 0, 16);
1693                                         for (k = 1; j < numalpa; k++) {
1694                                                 un.pamap[k - 1] =
1695                                                         phba->alpa_map[j + 1];
1696                                                 j++;
1697                                                 if (k == 16)
1698                                                         break;
1699                                         }
1700                                         /* Link Up Event ALPA map */
1701                                         lpfc_printf_log(phba,
1702                                                         KERN_WARNING,
1703                                                         LOG_LINK_EVENT,
1704                                                         "1304 Link Up Event "
1705                                                         "ALPA map Data: x%x "
1706                                                         "x%x x%x x%x\n",
1707                                                         un.pa.wd1, un.pa.wd2,
1708                                                         un.pa.wd3, un.pa.wd4);
1709                                 }
1710                         }
1711                 }
1712         } else {
1713                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
1714                         if (phba->max_vpi && phba->cfg_enable_npiv &&
1715                            (phba->sli_rev == 3))
1716                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
1717                 }
1718                 vport->fc_myDID = phba->fc_pref_DID;
1719                 vport->fc_flag |= FC_LBIT;
1720         }
1721         spin_unlock_irq(&phba->hbalock);
1722
1723         lpfc_linkup(phba);
1724         if (sparam_mbox) {
1725                 lpfc_read_sparam(phba, sparam_mbox, 0);
1726                 sparam_mbox->vport = vport;
1727                 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1728                 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
1729                 if (rc == MBX_NOT_FINISHED) {
1730                         mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
1731                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1732                         kfree(mp);
1733                         mempool_free(sparam_mbox, phba->mbox_mem_pool);
1734                         goto out;
1735                 }
1736         }
1737
1738         if (!(phba->hba_flag & HBA_FCOE_SUPPORT)) {
1739                 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1740                 if (!cfglink_mbox)
1741                         goto out;
1742                 vport->port_state = LPFC_LOCAL_CFG_LINK;
1743                 lpfc_config_link(phba, cfglink_mbox);
1744                 cfglink_mbox->vport = vport;
1745                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
1746                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
1747                 if (rc == MBX_NOT_FINISHED) {
1748                         mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1749                         goto out;
1750                 }
1751         } else {
1752                 /*
1753                  * Add the driver's default FCF record at FCF index 0 now. This
1754                  * is phase 1 implementation that support FCF index 0 and driver
1755                  * defaults.
1756                  */
1757                 if (phba->cfg_enable_fip == 0) {
1758                         fcf_record = kzalloc(sizeof(struct fcf_record),
1759                                         GFP_KERNEL);
1760                         if (unlikely(!fcf_record)) {
1761                                 lpfc_printf_log(phba, KERN_ERR,
1762                                         LOG_MBOX | LOG_SLI,
1763                                         "2554 Could not allocate memmory for "
1764                                         "fcf record\n");
1765                                 rc = -ENODEV;
1766                                 goto out;
1767                         }
1768
1769                         lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
1770                                                 LPFC_FCOE_FCF_DEF_INDEX);
1771                         rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
1772                         if (unlikely(rc)) {
1773                                 lpfc_printf_log(phba, KERN_ERR,
1774                                         LOG_MBOX | LOG_SLI,
1775                                         "2013 Could not manually add FCF "
1776                                         "record 0, status %d\n", rc);
1777                                 rc = -ENODEV;
1778                                 kfree(fcf_record);
1779                                 goto out;
1780                         }
1781                         kfree(fcf_record);
1782                 }
1783                 /*
1784                  * The driver is expected to do FIP/FCF. Call the port
1785                  * and get the FCF Table.
1786                  */
1787                 rc = lpfc_sli4_read_fcf_record(phba,
1788                                         LPFC_FCOE_FCF_GET_FIRST);
1789                 if (rc)
1790                         goto out;
1791         }
1792
1793         return;
1794 out:
1795         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1796         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1797                          "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
1798                          vport->port_state, sparam_mbox, cfglink_mbox);
1799         lpfc_issue_clear_la(phba, vport);
1800         return;
1801 }
1802
1803 static void
1804 lpfc_enable_la(struct lpfc_hba *phba)
1805 {
1806         uint32_t control;
1807         struct lpfc_sli *psli = &phba->sli;
1808         spin_lock_irq(&phba->hbalock);
1809         psli->sli_flag |= LPFC_PROCESS_LA;
1810         if (phba->sli_rev <= LPFC_SLI_REV3) {
1811                 control = readl(phba->HCregaddr);
1812                 control |= HC_LAINT_ENA;
1813                 writel(control, phba->HCregaddr);
1814                 readl(phba->HCregaddr); /* flush */
1815         }
1816         spin_unlock_irq(&phba->hbalock);
1817 }
1818
1819 static void
1820 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
1821 {
1822         lpfc_linkdown(phba);
1823         lpfc_enable_la(phba);
1824         lpfc_unregister_unused_fcf(phba);
1825         /* turn on Link Attention interrupts - no CLEAR_LA needed */
1826 }
1827
1828
1829 /*
1830  * This routine handles processing a READ_LA mailbox
1831  * command upon completion. It is setup in the LPFC_MBOXQ
1832  * as the completion routine when the command is
1833  * handed off to the SLI layer.
1834  */
1835 void
1836 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1837 {
1838         struct lpfc_vport *vport = pmb->vport;
1839         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1840         READ_LA_VAR *la;
1841         MAILBOX_t *mb = &pmb->u.mb;
1842         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1843
1844         /* Unblock ELS traffic */
1845         phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1846         /* Check for error */
1847         if (mb->mbxStatus) {
1848                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1849                                 "1307 READ_LA mbox error x%x state x%x\n",
1850                                 mb->mbxStatus, vport->port_state);
1851                 lpfc_mbx_issue_link_down(phba);
1852                 phba->link_state = LPFC_HBA_ERROR;
1853                 goto lpfc_mbx_cmpl_read_la_free_mbuf;
1854         }
1855
1856         la = (READ_LA_VAR *) &pmb->u.mb.un.varReadLA;
1857
1858         memcpy(&phba->alpa_map[0], mp->virt, 128);
1859
1860         spin_lock_irq(shost->host_lock);
1861         if (la->pb)
1862                 vport->fc_flag |= FC_BYPASSED_MODE;
1863         else
1864                 vport->fc_flag &= ~FC_BYPASSED_MODE;
1865         spin_unlock_irq(shost->host_lock);
1866
1867         if (((phba->fc_eventTag + 1) < la->eventTag) ||
1868             (phba->fc_eventTag == la->eventTag)) {
1869                 phba->fc_stat.LinkMultiEvent++;
1870                 if (la->attType == AT_LINK_UP)
1871                         if (phba->fc_eventTag != 0)
1872                                 lpfc_linkdown(phba);
1873         }
1874
1875         phba->fc_eventTag = la->eventTag;
1876         if (la->mm)
1877                 phba->sli.sli_flag |= LPFC_MENLO_MAINT;
1878         else
1879                 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
1880
1881         if (la->attType == AT_LINK_UP && (!la->mm)) {
1882                 phba->fc_stat.LinkUp++;
1883                 if (phba->link_flag & LS_LOOPBACK_MODE) {
1884                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1885                                         "1306 Link Up Event in loop back mode "
1886                                         "x%x received Data: x%x x%x x%x x%x\n",
1887                                         la->eventTag, phba->fc_eventTag,
1888                                         la->granted_AL_PA, la->UlnkSpeed,
1889                                         phba->alpa_map[0]);
1890                 } else {
1891                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1892                                         "1303 Link Up Event x%x received "
1893                                         "Data: x%x x%x x%x x%x x%x x%x %d\n",
1894                                         la->eventTag, phba->fc_eventTag,
1895                                         la->granted_AL_PA, la->UlnkSpeed,
1896                                         phba->alpa_map[0],
1897                                         la->mm, la->fa,
1898                                         phba->wait_4_mlo_maint_flg);
1899                 }
1900                 lpfc_mbx_process_link_up(phba, la);
1901         } else if (la->attType == AT_LINK_DOWN) {
1902                 phba->fc_stat.LinkDown++;
1903                 if (phba->link_flag & LS_LOOPBACK_MODE) {
1904                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1905                                 "1308 Link Down Event in loop back mode "
1906                                 "x%x received "
1907                                 "Data: x%x x%x x%x\n",
1908                                 la->eventTag, phba->fc_eventTag,
1909                                 phba->pport->port_state, vport->fc_flag);
1910                 }
1911                 else {
1912                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1913                                 "1305 Link Down Event x%x received "
1914                                 "Data: x%x x%x x%x x%x x%x\n",
1915                                 la->eventTag, phba->fc_eventTag,
1916                                 phba->pport->port_state, vport->fc_flag,
1917                                 la->mm, la->fa);
1918                 }
1919                 lpfc_mbx_issue_link_down(phba);
1920         }
1921         if (la->mm && la->attType == AT_LINK_UP) {
1922                 if (phba->link_state != LPFC_LINK_DOWN) {
1923                         phba->fc_stat.LinkDown++;
1924                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1925                                 "1312 Link Down Event x%x received "
1926                                 "Data: x%x x%x x%x\n",
1927                                 la->eventTag, phba->fc_eventTag,
1928                                 phba->pport->port_state, vport->fc_flag);
1929                         lpfc_mbx_issue_link_down(phba);
1930                 } else
1931                         lpfc_enable_la(phba);
1932
1933                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1934                                 "1310 Menlo Maint Mode Link up Event x%x rcvd "
1935                                 "Data: x%x x%x x%x\n",
1936                                 la->eventTag, phba->fc_eventTag,
1937                                 phba->pport->port_state, vport->fc_flag);
1938                 /*
1939                  * The cmnd that triggered this will be waiting for this
1940                  * signal.
1941                  */
1942                 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
1943                 if (phba->wait_4_mlo_maint_flg) {
1944                         phba->wait_4_mlo_maint_flg = 0;
1945                         wake_up_interruptible(&phba->wait_4_mlo_m_q);
1946                 }
1947         }
1948
1949         if (la->fa) {
1950                 if (la->mm)
1951                         lpfc_issue_clear_la(phba, vport);
1952                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1953                                 "1311 fa %d\n", la->fa);
1954         }
1955
1956 lpfc_mbx_cmpl_read_la_free_mbuf:
1957         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1958         kfree(mp);
1959         mempool_free(pmb, phba->mbox_mem_pool);
1960         return;
1961 }
1962
1963 /*
1964  * This routine handles processing a REG_LOGIN mailbox
1965  * command upon completion. It is setup in the LPFC_MBOXQ
1966  * as the completion routine when the command is
1967  * handed off to the SLI layer.
1968  */
1969 void
1970 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1971 {
1972         struct lpfc_vport  *vport = pmb->vport;
1973         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1974         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1975
1976         pmb->context1 = NULL;
1977
1978         /* Good status, call state machine */
1979         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
1980         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1981         kfree(mp);
1982         mempool_free(pmb, phba->mbox_mem_pool);
1983         /* decrement the node reference count held for this callback
1984          * function.
1985          */
1986         lpfc_nlp_put(ndlp);
1987
1988         return;
1989 }
1990
1991 static void
1992 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1993 {
1994         MAILBOX_t *mb = &pmb->u.mb;
1995         struct lpfc_vport *vport = pmb->vport;
1996         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1997
1998         switch (mb->mbxStatus) {
1999         case 0x0011:
2000         case 0x0020:
2001         case 0x9700:
2002                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2003                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
2004                                  mb->mbxStatus);
2005                 break;
2006         }
2007         vport->unreg_vpi_cmpl = VPORT_OK;
2008         mempool_free(pmb, phba->mbox_mem_pool);
2009         /*
2010          * This shost reference might have been taken at the beginning of
2011          * lpfc_vport_delete()
2012          */
2013         if (vport->load_flag & FC_UNLOADING)
2014                 scsi_host_put(shost);
2015 }
2016
2017 int
2018 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
2019 {
2020         struct lpfc_hba  *phba = vport->phba;
2021         LPFC_MBOXQ_t *mbox;
2022         int rc;
2023
2024         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2025         if (!mbox)
2026                 return 1;
2027
2028         lpfc_unreg_vpi(phba, vport->vpi, mbox);
2029         mbox->vport = vport;
2030         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
2031         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2032         if (rc == MBX_NOT_FINISHED) {
2033                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
2034                                  "1800 Could not issue unreg_vpi\n");
2035                 mempool_free(mbox, phba->mbox_mem_pool);
2036                 vport->unreg_vpi_cmpl = VPORT_ERROR;
2037                 return rc;
2038         }
2039         return 0;
2040 }
2041
2042 static void
2043 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2044 {
2045         struct lpfc_vport *vport = pmb->vport;
2046         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2047         MAILBOX_t *mb = &pmb->u.mb;
2048
2049         switch (mb->mbxStatus) {
2050         case 0x0011:
2051         case 0x9601:
2052         case 0x9602:
2053                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2054                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
2055                                  mb->mbxStatus);
2056                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2057                 spin_lock_irq(shost->host_lock);
2058                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2059                 spin_unlock_irq(shost->host_lock);
2060                 vport->fc_myDID = 0;
2061                 goto out;
2062         }
2063
2064         vport->num_disc_nodes = 0;
2065         /* go thru NPR list and issue ELS PLOGIs */
2066         if (vport->fc_npr_cnt)
2067                 lpfc_els_disc_plogi(vport);
2068
2069         if (!vport->num_disc_nodes) {
2070                 spin_lock_irq(shost->host_lock);
2071                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2072                 spin_unlock_irq(shost->host_lock);
2073                 lpfc_can_disctmo(vport);
2074         }
2075         vport->port_state = LPFC_VPORT_READY;
2076
2077 out:
2078         mempool_free(pmb, phba->mbox_mem_pool);
2079         return;
2080 }
2081
2082 /**
2083  * lpfc_create_static_vport - Read HBA config region to create static vports.
2084  * @phba: pointer to lpfc hba data structure.
2085  *
2086  * This routine issue a DUMP mailbox command for config region 22 to get
2087  * the list of static vports to be created. The function create vports
2088  * based on the information returned from the HBA.
2089  **/
2090 void
2091 lpfc_create_static_vport(struct lpfc_hba *phba)
2092 {
2093         LPFC_MBOXQ_t *pmb = NULL;
2094         MAILBOX_t *mb;
2095         struct static_vport_info *vport_info;
2096         int rc, i;
2097         struct fc_vport_identifiers vport_id;
2098         struct fc_vport *new_fc_vport;
2099         struct Scsi_Host *shost;
2100         struct lpfc_vport *vport;
2101         uint16_t offset = 0;
2102         uint8_t *vport_buff;
2103
2104         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2105         if (!pmb) {
2106                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2107                                 "0542 lpfc_create_static_vport failed to"
2108                                 " allocate mailbox memory\n");
2109                 return;
2110         }
2111
2112         mb = &pmb->u.mb;
2113
2114         vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
2115         if (!vport_info) {
2116                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2117                                 "0543 lpfc_create_static_vport failed to"
2118                                 " allocate vport_info\n");
2119                 mempool_free(pmb, phba->mbox_mem_pool);
2120                 return;
2121         }
2122
2123         vport_buff = (uint8_t *) vport_info;
2124         do {
2125                 lpfc_dump_static_vport(phba, pmb, offset);
2126                 pmb->vport = phba->pport;
2127                 rc = lpfc_sli_issue_mbox_wait(phba, pmb, LPFC_MBOX_TMO);
2128
2129                 if ((rc != MBX_SUCCESS) || mb->mbxStatus) {
2130                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2131                                 "0544 lpfc_create_static_vport failed to"
2132                                 " issue dump mailbox command ret 0x%x "
2133                                 "status 0x%x\n",
2134                                 rc, mb->mbxStatus);
2135                         goto out;
2136                 }
2137
2138                 if (mb->un.varDmp.word_cnt >
2139                         sizeof(struct static_vport_info) - offset)
2140                         mb->un.varDmp.word_cnt =
2141                         sizeof(struct static_vport_info) - offset;
2142
2143                 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
2144                         vport_buff + offset,
2145                         mb->un.varDmp.word_cnt);
2146                 offset += mb->un.varDmp.word_cnt;
2147
2148         } while (mb->un.varDmp.word_cnt &&
2149                 offset < sizeof(struct static_vport_info));
2150
2151
2152         if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
2153                 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
2154                         != VPORT_INFO_REV)) {
2155                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2156                         "0545 lpfc_create_static_vport bad"
2157                         " information header 0x%x 0x%x\n",
2158                         le32_to_cpu(vport_info->signature),
2159                         le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK);
2160
2161                 goto out;
2162         }
2163
2164         shost = lpfc_shost_from_vport(phba->pport);
2165
2166         for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
2167                 memset(&vport_id, 0, sizeof(vport_id));
2168                 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
2169                 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
2170                 if (!vport_id.port_name || !vport_id.node_name)
2171                         continue;
2172
2173                 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
2174                 vport_id.vport_type = FC_PORTTYPE_NPIV;
2175                 vport_id.disable = false;
2176                 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
2177
2178                 if (!new_fc_vport) {
2179                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2180                                 "0546 lpfc_create_static_vport failed to"
2181                                 " create vport \n");
2182                         continue;
2183                 }
2184
2185                 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
2186                 vport->vport_flag |= STATIC_VPORT;
2187         }
2188
2189 out:
2190         /*
2191          * If this is timed out command, setting NULL to context2 tell SLI
2192          * layer not to use this buffer.
2193          */
2194         spin_lock_irq(&phba->hbalock);
2195         pmb->context2 = NULL;
2196         spin_unlock_irq(&phba->hbalock);
2197         kfree(vport_info);
2198         if (rc != MBX_TIMEOUT)
2199                 mempool_free(pmb, phba->mbox_mem_pool);
2200
2201         return;
2202 }
2203
2204 /*
2205  * This routine handles processing a Fabric REG_LOGIN mailbox
2206  * command upon completion. It is setup in the LPFC_MBOXQ
2207  * as the completion routine when the command is
2208  * handed off to the SLI layer.
2209  */
2210 void
2211 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2212 {
2213         struct lpfc_vport *vport = pmb->vport;
2214         MAILBOX_t *mb = &pmb->u.mb;
2215         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2216         struct lpfc_nodelist *ndlp;
2217
2218         ndlp = (struct lpfc_nodelist *) pmb->context2;
2219         pmb->context1 = NULL;
2220         pmb->context2 = NULL;
2221         if (mb->mbxStatus) {
2222                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2223                                  "0258 Register Fabric login error: 0x%x\n",
2224                                  mb->mbxStatus);
2225                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2226                 kfree(mp);
2227                 mempool_free(pmb, phba->mbox_mem_pool);
2228
2229                 if (phba->fc_topology == TOPOLOGY_LOOP) {
2230                         /* FLOGI failed, use loop map to make discovery list */
2231                         lpfc_disc_list_loopmap(vport);
2232
2233                         /* Start discovery */
2234                         lpfc_disc_start(vport);
2235                         /* Decrement the reference count to ndlp after the
2236                          * reference to the ndlp are done.
2237                          */
2238                         lpfc_nlp_put(ndlp);
2239                         return;
2240                 }
2241
2242                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2243                 /* Decrement the reference count to ndlp after the reference
2244                  * to the ndlp are done.
2245                  */
2246                 lpfc_nlp_put(ndlp);
2247                 return;
2248         }
2249
2250         ndlp->nlp_rpi = mb->un.varWords[0];
2251         ndlp->nlp_flag |= NLP_RPI_VALID;
2252         ndlp->nlp_type |= NLP_FABRIC;
2253         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2254
2255         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
2256                 lpfc_start_fdiscs(phba);
2257                 lpfc_do_scr_ns_plogi(phba, vport);
2258         }
2259
2260         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2261         kfree(mp);
2262         mempool_free(pmb, phba->mbox_mem_pool);
2263
2264         /* Drop the reference count from the mbox at the end after
2265          * all the current reference to the ndlp have been done.
2266          */
2267         lpfc_nlp_put(ndlp);
2268         return;
2269 }
2270
2271 /*
2272  * This routine handles processing a NameServer REG_LOGIN mailbox
2273  * command upon completion. It is setup in the LPFC_MBOXQ
2274  * as the completion routine when the command is
2275  * handed off to the SLI layer.
2276  */
2277 void
2278 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2279 {
2280         MAILBOX_t *mb = &pmb->u.mb;
2281         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2282         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2283         struct lpfc_vport *vport = pmb->vport;
2284
2285         if (mb->mbxStatus) {
2286 out:
2287                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2288                                  "0260 Register NameServer error: 0x%x\n",
2289                                  mb->mbxStatus);
2290                 /* decrement the node reference count held for this
2291                  * callback function.
2292                  */
2293                 lpfc_nlp_put(ndlp);
2294                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2295                 kfree(mp);
2296                 mempool_free(pmb, phba->mbox_mem_pool);
2297
2298                 /* If no other thread is using the ndlp, free it */
2299                 lpfc_nlp_not_used(ndlp);
2300
2301                 if (phba->fc_topology == TOPOLOGY_LOOP) {
2302                         /*
2303                          * RegLogin failed, use loop map to make discovery
2304                          * list
2305                          */
2306                         lpfc_disc_list_loopmap(vport);
2307
2308                         /* Start discovery */
2309                         lpfc_disc_start(vport);
2310                         return;
2311                 }
2312                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2313                 return;
2314         }
2315
2316         pmb->context1 = NULL;
2317
2318         ndlp->nlp_rpi = mb->un.varWords[0];
2319         ndlp->nlp_flag |= NLP_RPI_VALID;
2320         ndlp->nlp_type |= NLP_FABRIC;
2321         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2322
2323         if (vport->port_state < LPFC_VPORT_READY) {
2324                 /* Link up discovery requires Fabric registration. */
2325                 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
2326                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
2327                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
2328                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
2329                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
2330
2331                 /* Issue SCR just before NameServer GID_FT Query */
2332                 lpfc_issue_els_scr(vport, SCR_DID, 0);
2333         }
2334
2335         vport->fc_ns_retry = 0;
2336         /* Good status, issue CT Request to NameServer */
2337         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
2338                 /* Cannot issue NameServer Query, so finish up discovery */
2339                 goto out;
2340         }
2341
2342         /* decrement the node reference count held for this
2343          * callback function.
2344          */
2345         lpfc_nlp_put(ndlp);
2346         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2347         kfree(mp);
2348         mempool_free(pmb, phba->mbox_mem_pool);
2349
2350         return;
2351 }
2352
2353 static void
2354 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2355 {
2356         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2357         struct fc_rport  *rport;
2358         struct lpfc_rport_data *rdata;
2359         struct fc_rport_identifiers rport_ids;
2360         struct lpfc_hba  *phba = vport->phba;
2361
2362         /* Remote port has reappeared. Re-register w/ FC transport */
2363         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
2364         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
2365         rport_ids.port_id = ndlp->nlp_DID;
2366         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
2367
2368         /*
2369          * We leave our node pointer in rport->dd_data when we unregister a
2370          * FCP target port.  But fc_remote_port_add zeros the space to which
2371          * rport->dd_data points.  So, if we're reusing a previously
2372          * registered port, drop the reference that we took the last time we
2373          * registered the port.
2374          */
2375         if (ndlp->rport && ndlp->rport->dd_data &&
2376             ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
2377                 lpfc_nlp_put(ndlp);
2378
2379         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
2380                 "rport add:       did:x%x flg:x%x type x%x",
2381                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2382
2383         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
2384         if (!rport || !get_device(&rport->dev)) {
2385                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
2386                            "Warning: fc_remote_port_add failed\n");
2387                 return;
2388         }
2389
2390         /* initialize static port data */
2391         rport->maxframe_size = ndlp->nlp_maxframe;
2392         rport->supported_classes = ndlp->nlp_class_sup;
2393         rdata = rport->dd_data;
2394         rdata->pnode = lpfc_nlp_get(ndlp);
2395
2396         if (ndlp->nlp_type & NLP_FCP_TARGET)
2397                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
2398         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
2399                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
2400
2401
2402         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
2403                 fc_remote_port_rolechg(rport, rport_ids.roles);
2404
2405         if ((rport->scsi_target_id != -1) &&
2406             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
2407                 ndlp->nlp_sid = rport->scsi_target_id;
2408         }
2409         return;
2410 }
2411
2412 static void
2413 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
2414 {
2415         struct fc_rport *rport = ndlp->rport;
2416
2417         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
2418                 "rport delete:    did:x%x flg:x%x type x%x",
2419                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2420
2421         fc_remote_port_delete(rport);
2422
2423         return;
2424 }
2425
2426 static void
2427 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
2428 {
2429         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2430
2431         spin_lock_irq(shost->host_lock);
2432         switch (state) {
2433         case NLP_STE_UNUSED_NODE:
2434                 vport->fc_unused_cnt += count;
2435                 break;
2436         case NLP_STE_PLOGI_ISSUE:
2437                 vport->fc_plogi_cnt += count;
2438                 break;
2439         case NLP_STE_ADISC_ISSUE:
2440                 vport->fc_adisc_cnt += count;
2441                 break;
2442         case NLP_STE_REG_LOGIN_ISSUE:
2443                 vport->fc_reglogin_cnt += count;
2444                 break;
2445         case NLP_STE_PRLI_ISSUE:
2446                 vport->fc_prli_cnt += count;
2447                 break;
2448         case NLP_STE_UNMAPPED_NODE:
2449                 vport->fc_unmap_cnt += count;
2450                 break;
2451         case NLP_STE_MAPPED_NODE:
2452                 vport->fc_map_cnt += count;
2453                 break;
2454         case NLP_STE_NPR_NODE:
2455                 vport->fc_npr_cnt += count;
2456                 break;
2457         }
2458         spin_unlock_irq(shost->host_lock);
2459 }
2460
2461 static void
2462 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2463                        int old_state, int new_state)
2464 {
2465         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2466
2467         if (new_state == NLP_STE_UNMAPPED_NODE) {
2468                 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
2469                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
2470                 ndlp->nlp_type |= NLP_FC_NODE;
2471         }
2472         if (new_state == NLP_STE_MAPPED_NODE)
2473                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
2474         if (new_state == NLP_STE_NPR_NODE)
2475                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
2476
2477         /* Transport interface */
2478         if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
2479                             old_state == NLP_STE_UNMAPPED_NODE)) {
2480                 vport->phba->nport_event_cnt++;
2481                 lpfc_unregister_remote_port(ndlp);
2482         }
2483
2484         if (new_state ==  NLP_STE_MAPPED_NODE ||
2485             new_state == NLP_STE_UNMAPPED_NODE) {
2486                 vport->phba->nport_event_cnt++;
2487                 /*
2488                  * Tell the fc transport about the port, if we haven't
2489                  * already. If we have, and it's a scsi entity, be
2490                  * sure to unblock any attached scsi devices
2491                  */
2492                 lpfc_register_remote_port(vport, ndlp);
2493         }
2494         if ((new_state ==  NLP_STE_MAPPED_NODE) &&
2495                 (vport->stat_data_enabled)) {
2496                 /*
2497                  * A new target is discovered, if there is no buffer for
2498                  * statistical data collection allocate buffer.
2499                  */
2500                 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
2501                                          sizeof(struct lpfc_scsicmd_bkt),
2502                                          GFP_KERNEL);
2503
2504                 if (!ndlp->lat_data)
2505                         lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
2506                                 "0286 lpfc_nlp_state_cleanup failed to "
2507                                 "allocate statistical data buffer DID "
2508                                 "0x%x\n", ndlp->nlp_DID);
2509         }
2510         /*
2511          * if we added to Mapped list, but the remote port
2512          * registration failed or assigned a target id outside
2513          * our presentable range - move the node to the
2514          * Unmapped List
2515          */
2516         if (new_state == NLP_STE_MAPPED_NODE &&
2517             (!ndlp->rport ||
2518              ndlp->rport->scsi_target_id == -1 ||
2519              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
2520                 spin_lock_irq(shost->host_lock);
2521                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
2522                 spin_unlock_irq(shost->host_lock);
2523                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2524         }
2525 }
2526
2527 static char *
2528 lpfc_nlp_state_name(char *buffer, size_t size, int state)
2529 {
2530         static char *states[] = {
2531                 [NLP_STE_UNUSED_NODE] = "UNUSED",
2532                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
2533                 [NLP_STE_ADISC_ISSUE] = "ADISC",
2534                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
2535                 [NLP_STE_PRLI_ISSUE] = "PRLI",
2536                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
2537                 [NLP_STE_MAPPED_NODE] = "MAPPED",
2538                 [NLP_STE_NPR_NODE] = "NPR",
2539         };
2540
2541         if (state < NLP_STE_MAX_STATE && states[state])
2542                 strlcpy(buffer, states[state], size);
2543         else
2544                 snprintf(buffer, size, "unknown (%d)", state);
2545         return buffer;
2546 }
2547
2548 void
2549 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2550                    int state)
2551 {
2552         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2553         int  old_state = ndlp->nlp_state;
2554         char name1[16], name2[16];
2555
2556         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2557                          "0904 NPort state transition x%06x, %s -> %s\n",
2558                          ndlp->nlp_DID,
2559                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
2560                          lpfc_nlp_state_name(name2, sizeof(name2), state));
2561
2562         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2563                 "node statechg    did:x%x old:%d ste:%d",
2564                 ndlp->nlp_DID, old_state, state);
2565
2566         if (old_state == NLP_STE_NPR_NODE &&
2567             state != NLP_STE_NPR_NODE)
2568                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2569         if (old_state == NLP_STE_UNMAPPED_NODE) {
2570                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
2571                 ndlp->nlp_type &= ~NLP_FC_NODE;
2572         }
2573
2574         if (list_empty(&ndlp->nlp_listp)) {
2575                 spin_lock_irq(shost->host_lock);
2576                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
2577                 spin_unlock_irq(shost->host_lock);
2578         } else if (old_state)
2579                 lpfc_nlp_counters(vport, old_state, -1);
2580
2581         ndlp->nlp_state = state;
2582         lpfc_nlp_counters(vport, state, 1);
2583         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
2584 }
2585
2586 void
2587 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2588 {
2589         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2590
2591         if (list_empty(&ndlp->nlp_listp)) {
2592                 spin_lock_irq(shost->host_lock);
2593                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
2594                 spin_unlock_irq(shost->host_lock);
2595         }
2596 }
2597
2598 void
2599 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2600 {
2601         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2602
2603         lpfc_cancel_retry_delay_tmo(vport, ndlp);
2604         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
2605                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
2606         spin_lock_irq(shost->host_lock);
2607         list_del_init(&ndlp->nlp_listp);
2608         spin_unlock_irq(shost->host_lock);
2609         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
2610                                 NLP_STE_UNUSED_NODE);
2611 }
2612
2613 static void
2614 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2615 {
2616         lpfc_cancel_retry_delay_tmo(vport, ndlp);
2617         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
2618                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
2619         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
2620                                 NLP_STE_UNUSED_NODE);
2621 }
2622 /**
2623  * lpfc_initialize_node - Initialize all fields of node object
2624  * @vport: Pointer to Virtual Port object.
2625  * @ndlp: Pointer to FC node object.
2626  * @did: FC_ID of the node.
2627  *
2628  * This function is always called when node object need to be initialized.
2629  * It initializes all the fields of the node object. Although the reference
2630  * to phba from @ndlp can be obtained indirectly through it's reference to
2631  * @vport, a direct reference to phba is taken here by @ndlp. This is due
2632  * to the life-span of the @ndlp might go beyond the existence of @vport as
2633  * the final release of ndlp is determined by its reference count. And, the
2634  * operation on @ndlp needs the reference to phba.
2635  **/
2636 static inline void
2637 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2638         uint32_t did)
2639 {
2640         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
2641         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
2642         init_timer(&ndlp->nlp_delayfunc);
2643         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
2644         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
2645         ndlp->nlp_DID = did;
2646         ndlp->vport = vport;
2647         ndlp->phba = vport->phba;
2648         ndlp->nlp_sid = NLP_NO_SID;
2649         kref_init(&ndlp->kref);
2650         NLP_INT_NODE_ACT(ndlp);
2651         atomic_set(&ndlp->cmd_pending, 0);
2652         ndlp->cmd_qdepth = LPFC_MAX_TGT_QDEPTH;
2653 }
2654
2655 struct lpfc_nodelist *
2656 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2657                  int state)
2658 {
2659         struct lpfc_hba *phba = vport->phba;
2660         uint32_t did;
2661         unsigned long flags;
2662
2663         if (!ndlp)
2664                 return NULL;
2665
2666         spin_lock_irqsave(&phba->ndlp_lock, flags);
2667         /* The ndlp should not be in memory free mode */
2668         if (NLP_CHK_FREE_REQ(ndlp)) {
2669                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
2670                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2671                                 "0277 lpfc_enable_node: ndlp:x%p "
2672                                 "usgmap:x%x refcnt:%d\n",
2673                                 (void *)ndlp, ndlp->nlp_usg_map,
2674                                 atomic_read(&ndlp->kref.refcount));
2675                 return NULL;
2676         }
2677         /* The ndlp should not already be in active mode */
2678         if (NLP_CHK_NODE_ACT(ndlp)) {
2679                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
2680                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2681                                 "0278 lpfc_enable_node: ndlp:x%p "
2682                                 "usgmap:x%x refcnt:%d\n",
2683                                 (void *)ndlp, ndlp->nlp_usg_map,
2684                                 atomic_read(&ndlp->kref.refcount));
2685                 return NULL;
2686         }
2687
2688         /* Keep the original DID */
2689         did = ndlp->nlp_DID;
2690
2691         /* re-initialize ndlp except of ndlp linked list pointer */
2692         memset((((char *)ndlp) + sizeof (struct list_head)), 0,
2693                 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
2694         lpfc_initialize_node(vport, ndlp, did);
2695
2696         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
2697
2698         if (state != NLP_STE_UNUSED_NODE)
2699                 lpfc_nlp_set_state(vport, ndlp, state);
2700
2701         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2702                 "node enable:       did:x%x",
2703                 ndlp->nlp_DID, 0, 0);
2704         return ndlp;
2705 }
2706
2707 void
2708 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2709 {
2710         /*
2711          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
2712          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
2713          * the ndlp from the vport. The ndlp marked as UNUSED on the list
2714          * until ALL other outstanding threads have completed. We check
2715          * that the ndlp not already in the UNUSED state before we proceed.
2716          */
2717         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
2718                 return;
2719         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
2720         lpfc_nlp_put(ndlp);
2721         return;
2722 }
2723
2724 /*
2725  * Start / ReStart rescue timer for Discovery / RSCN handling
2726  */
2727 void
2728 lpfc_set_disctmo(struct lpfc_vport *vport)
2729 {
2730         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2731         struct lpfc_hba  *phba = vport->phba;
2732         uint32_t tmo;
2733
2734         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
2735                 /* For FAN, timeout should be greater than edtov */
2736                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
2737         } else {
2738                 /* Normal discovery timeout should be > than ELS/CT timeout
2739                  * FC spec states we need 3 * ratov for CT requests
2740                  */
2741                 tmo = ((phba->fc_ratov * 3) + 3);
2742         }
2743
2744
2745         if (!timer_pending(&vport->fc_disctmo)) {
2746                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2747                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
2748                         tmo, vport->port_state, vport->fc_flag);
2749         }
2750
2751         mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
2752         spin_lock_irq(shost->host_lock);
2753         vport->fc_flag |= FC_DISC_TMO;
2754         spin_unlock_irq(shost->host_lock);
2755
2756         /* Start Discovery Timer state <hba_state> */
2757         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2758                          "0247 Start Discovery Timer state x%x "
2759                          "Data: x%x x%lx x%x x%x\n",
2760                          vport->port_state, tmo,
2761                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
2762                          vport->fc_adisc_cnt);
2763
2764         return;
2765 }
2766
2767 /*
2768  * Cancel rescue timer for Discovery / RSCN handling
2769  */
2770 int
2771 lpfc_can_disctmo(struct lpfc_vport *vport)
2772 {
2773         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2774         unsigned long iflags;
2775
2776         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2777                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
2778                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
2779
2780         /* Turn off discovery timer if its running */
2781         if (vport->fc_flag & FC_DISC_TMO) {
2782                 spin_lock_irqsave(shost->host_lock, iflags);
2783                 vport->fc_flag &= ~FC_DISC_TMO;
2784                 spin_unlock_irqrestore(shost->host_lock, iflags);
2785                 del_timer_sync(&vport->fc_disctmo);
2786                 spin_lock_irqsave(&vport->work_port_lock, iflags);
2787                 vport->work_port_events &= ~WORKER_DISC_TMO;
2788                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
2789         }
2790
2791         /* Cancel Discovery Timer state <hba_state> */
2792         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2793                          "0248 Cancel Discovery Timer state x%x "
2794                          "Data: x%x x%x x%x\n",
2795                          vport->port_state, vport->fc_flag,
2796                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
2797         return 0;
2798 }
2799
2800 /*
2801  * Check specified ring for outstanding IOCB on the SLI queue
2802  * Return true if iocb matches the specified nport
2803  */
2804 int
2805 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
2806                     struct lpfc_sli_ring *pring,
2807                     struct lpfc_iocbq *iocb,
2808                     struct lpfc_nodelist *ndlp)
2809 {
2810         struct lpfc_sli *psli = &phba->sli;
2811         IOCB_t *icmd = &iocb->iocb;
2812         struct lpfc_vport    *vport = ndlp->vport;
2813
2814         if (iocb->vport != vport)
2815                 return 0;
2816
2817         if (pring->ringno == LPFC_ELS_RING) {
2818                 switch (icmd->ulpCommand) {
2819                 case CMD_GEN_REQUEST64_CR:
2820                         if (iocb->context_un.ndlp == ndlp)
2821                                 return 1;
2822                 case CMD_ELS_REQUEST64_CR:
2823                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
2824                                 return 1;
2825                 case CMD_XMIT_ELS_RSP64_CX:
2826                         if (iocb->context1 == (uint8_t *) ndlp)
2827                                 return 1;
2828                 }
2829         } else if (pring->ringno == psli->extra_ring) {
2830
2831         } else if (pring->ringno == psli->fcp_ring) {
2832                 /* Skip match check if waiting to relogin to FCP target */
2833                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
2834                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
2835                         return 0;
2836                 }
2837                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
2838                         return 1;
2839                 }
2840         } else if (pring->ringno == psli->next_ring) {
2841
2842         }
2843         return 0;
2844 }
2845
2846 /*
2847  * Free resources / clean up outstanding I/Os
2848  * associated with nlp_rpi in the LPFC_NODELIST entry.
2849  */
2850 static int
2851 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
2852 {
2853         LIST_HEAD(completions);
2854         struct lpfc_sli *psli;
2855         struct lpfc_sli_ring *pring;
2856         struct lpfc_iocbq *iocb, *next_iocb;
2857         uint32_t rpi, i;
2858
2859         lpfc_fabric_abort_nport(ndlp);
2860
2861         /*
2862          * Everything that matches on txcmplq will be returned
2863          * by firmware with a no rpi error.
2864          */
2865         psli = &phba->sli;
2866         rpi = ndlp->nlp_rpi;
2867         if (ndlp->nlp_flag & NLP_RPI_VALID) {
2868                 /* Now process each ring */
2869                 for (i = 0; i < psli->num_rings; i++) {
2870                         pring = &psli->ring[i];
2871
2872                         spin_lock_irq(&phba->hbalock);
2873                         list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
2874                                                  list) {
2875                                 /*
2876                                  * Check to see if iocb matches the nport we are
2877                                  * looking for
2878                                  */
2879                                 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
2880                                                          ndlp))) {
2881                                         /* It matches, so deque and call compl
2882                                            with an error */
2883                                         list_move_tail(&iocb->list,
2884                                                        &completions);
2885                                         pring->txq_cnt--;
2886                                 }
2887                         }
2888                         spin_unlock_irq(&phba->hbalock);
2889                 }
2890         }
2891
2892         /* Cancel all the IOCBs from the completions list */
2893         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
2894                               IOERR_SLI_ABORTED);
2895
2896         return 0;
2897 }
2898
2899 /*
2900  * Free rpi associated with LPFC_NODELIST entry.
2901  * This routine is called from lpfc_freenode(), when we are removing
2902  * a LPFC_NODELIST entry. It is also called if the driver initiates a
2903  * LOGO that completes successfully, and we are waiting to PLOGI back
2904  * to the remote NPort. In addition, it is called after we receive
2905  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
2906  * we are waiting to PLOGI back to the remote NPort.
2907  */
2908 int
2909 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2910 {
2911         struct lpfc_hba *phba = vport->phba;
2912         LPFC_MBOXQ_t    *mbox;
2913         int rc;
2914
2915         if (ndlp->nlp_flag & NLP_RPI_VALID) {
2916                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2917                 if (mbox) {
2918                         lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
2919                         mbox->vport = vport;
2920                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2921                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2922                         if (rc == MBX_NOT_FINISHED)
2923                                 mempool_free(mbox, phba->mbox_mem_pool);
2924                 }
2925                 lpfc_no_rpi(phba, ndlp);
2926                 ndlp->nlp_rpi = 0;
2927                 ndlp->nlp_flag &= ~NLP_RPI_VALID;
2928                 return 1;
2929         }
2930         return 0;
2931 }
2932
2933 void
2934 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
2935 {
2936         struct lpfc_hba  *phba  = vport->phba;
2937         LPFC_MBOXQ_t     *mbox;
2938         int rc;
2939
2940         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2941         if (mbox) {
2942                 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
2943                 mbox->vport = vport;
2944                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2945                 mbox->context1 = NULL;
2946                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2947                 if (rc != MBX_TIMEOUT)
2948                         mempool_free(mbox, phba->mbox_mem_pool);
2949
2950                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
2951                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
2952                                 "1836 Could not issue "
2953                                 "unreg_login(all_rpis) status %d\n", rc);
2954         }
2955 }
2956
2957 void
2958 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
2959 {
2960         struct lpfc_hba  *phba  = vport->phba;
2961         LPFC_MBOXQ_t     *mbox;
2962         int rc;
2963
2964         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2965         if (mbox) {
2966                 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
2967                 mbox->vport = vport;
2968                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2969                 mbox->context1 = NULL;
2970                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2971                 if (rc != MBX_TIMEOUT)
2972                         mempool_free(mbox, phba->mbox_mem_pool);
2973
2974                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
2975                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
2976                                          "1815 Could not issue "
2977                                          "unreg_did (default rpis) status %d\n",
2978                                          rc);
2979         }
2980 }
2981
2982 /*
2983  * Free resources associated with LPFC_NODELIST entry
2984  * so it can be freed.
2985  */
2986 static int
2987 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2988 {
2989         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2990         struct lpfc_hba  *phba = vport->phba;
2991         LPFC_MBOXQ_t *mb, *nextmb;
2992         struct lpfc_dmabuf *mp;
2993
2994         /* Cleanup node for NPort <nlp_DID> */
2995         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2996                          "0900 Cleanup node for NPort x%x "
2997                          "Data: x%x x%x x%x\n",
2998                          ndlp->nlp_DID, ndlp->nlp_flag,
2999                          ndlp->nlp_state, ndlp->nlp_rpi);
3000         if (NLP_CHK_FREE_REQ(ndlp)) {
3001                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3002                                 "0280 lpfc_cleanup_node: ndlp:x%p "
3003                                 "usgmap:x%x refcnt:%d\n",
3004                                 (void *)ndlp, ndlp->nlp_usg_map,
3005                                 atomic_read(&ndlp->kref.refcount));
3006                 lpfc_dequeue_node(vport, ndlp);
3007         } else {
3008                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3009                                 "0281 lpfc_cleanup_node: ndlp:x%p "
3010                                 "usgmap:x%x refcnt:%d\n",
3011                                 (void *)ndlp, ndlp->nlp_usg_map,
3012                                 atomic_read(&ndlp->kref.refcount));
3013                 lpfc_disable_node(vport, ndlp);
3014         }
3015
3016         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
3017         if ((mb = phba->sli.mbox_active)) {
3018                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
3019                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
3020                         mb->context2 = NULL;
3021                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3022                 }
3023         }
3024
3025         spin_lock_irq(&phba->hbalock);
3026         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
3027                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
3028                     (ndlp == (struct lpfc_nodelist *) mb->context2)) {
3029                         mp = (struct lpfc_dmabuf *) (mb->context1);
3030                         if (mp) {
3031                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
3032                                 kfree(mp);
3033                         }
3034                         list_del(&mb->list);
3035                         mempool_free(mb, phba->mbox_mem_pool);
3036                         /* We shall not invoke the lpfc_nlp_put to decrement
3037                          * the ndlp reference count as we are in the process
3038                          * of lpfc_nlp_release.
3039                          */
3040                 }
3041         }
3042         spin_unlock_irq(&phba->hbalock);
3043
3044         lpfc_els_abort(phba, ndlp);
3045
3046         spin_lock_irq(shost->host_lock);
3047         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
3048         spin_unlock_irq(shost->host_lock);
3049
3050         ndlp->nlp_last_elscmd = 0;
3051         del_timer_sync(&ndlp->nlp_delayfunc);
3052
3053         list_del_init(&ndlp->els_retry_evt.evt_listp);
3054         list_del_init(&ndlp->dev_loss_evt.evt_listp);
3055
3056         lpfc_unreg_rpi(vport, ndlp);
3057
3058         return 0;
3059 }
3060
3061 /*
3062  * Check to see if we can free the nlp back to the freelist.
3063  * If we are in the middle of using the nlp in the discovery state
3064  * machine, defer the free till we reach the end of the state machine.
3065  */
3066 static void
3067 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3068 {
3069         struct lpfc_hba  *phba = vport->phba;
3070         struct lpfc_rport_data *rdata;
3071         LPFC_MBOXQ_t *mbox;
3072         int rc;
3073
3074         lpfc_cancel_retry_delay_tmo(vport, ndlp);
3075         if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
3076             !(ndlp->nlp_flag & NLP_RPI_VALID)) {
3077                 /* For this case we need to cleanup the default rpi
3078                  * allocated by the firmware.
3079                  */
3080                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
3081                         != NULL) {
3082                         rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID,
3083                             (uint8_t *) &vport->fc_sparam, mbox, 0);
3084                         if (rc) {
3085                                 mempool_free(mbox, phba->mbox_mem_pool);
3086                         }
3087                         else {
3088                                 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
3089                                 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
3090                                 mbox->vport = vport;
3091                                 mbox->context2 = NULL;
3092                                 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3093                                 if (rc == MBX_NOT_FINISHED) {
3094                                         mempool_free(mbox, phba->mbox_mem_pool);
3095                                 }
3096                         }
3097                 }
3098         }
3099         lpfc_cleanup_node(vport, ndlp);
3100
3101         /*
3102          * We can get here with a non-NULL ndlp->rport because when we
3103          * unregister a rport we don't break the rport/node linkage.  So if we
3104          * do, make sure we don't leaving any dangling pointers behind.
3105          */
3106         if (ndlp->rport) {
3107                 rdata = ndlp->rport->dd_data;
3108                 rdata->pnode = NULL;
3109                 ndlp->rport = NULL;
3110         }
3111 }
3112
3113 static int
3114 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3115               uint32_t did)
3116 {
3117         D_ID mydid, ndlpdid, matchdid;
3118
3119         if (did == Bcast_DID)
3120                 return 0;
3121
3122         /* First check for Direct match */
3123         if (ndlp->nlp_DID == did)
3124                 return 1;
3125
3126         /* Next check for area/domain identically equals 0 match */
3127         mydid.un.word = vport->fc_myDID;
3128         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
3129                 return 0;
3130         }
3131
3132         matchdid.un.word = did;
3133         ndlpdid.un.word = ndlp->nlp_DID;
3134         if (matchdid.un.b.id == ndlpdid.un.b.id) {
3135                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
3136                     (mydid.un.b.area == matchdid.un.b.area)) {
3137                         if ((ndlpdid.un.b.domain == 0) &&
3138                             (ndlpdid.un.b.area == 0)) {
3139                                 if (ndlpdid.un.b.id)
3140                                         return 1;
3141                         }
3142                         return 0;
3143                 }
3144
3145                 matchdid.un.word = ndlp->nlp_DID;
3146                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
3147                     (mydid.un.b.area == ndlpdid.un.b.area)) {
3148                         if ((matchdid.un.b.domain == 0) &&
3149                             (matchdid.un.b.area == 0)) {
3150                                 if (matchdid.un.b.id)
3151                                         return 1;
3152                         }
3153                 }
3154         }
3155         return 0;
3156 }
3157
3158 /* Search for a nodelist entry */
3159 static struct lpfc_nodelist *
3160 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
3161 {
3162         struct lpfc_nodelist *ndlp;
3163         uint32_t data1;
3164
3165         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
3166                 if (lpfc_matchdid(vport, ndlp, did)) {
3167                         data1 = (((uint32_t) ndlp->nlp_state << 24) |
3168                                  ((uint32_t) ndlp->nlp_xri << 16) |
3169                                  ((uint32_t) ndlp->nlp_type << 8) |
3170                                  ((uint32_t) ndlp->nlp_rpi & 0xff));
3171                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3172                                          "0929 FIND node DID "
3173                                          "Data: x%p x%x x%x x%x\n",
3174                                          ndlp, ndlp->nlp_DID,
3175                                          ndlp->nlp_flag, data1);
3176                         return ndlp;
3177                 }
3178         }
3179
3180         /* FIND node did <did> NOT FOUND */
3181         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3182                          "0932 FIND node did x%x NOT FOUND.\n", did);
3183         return NULL;
3184 }
3185
3186 struct lpfc_nodelist *
3187 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
3188 {
3189         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3190         struct lpfc_nodelist *ndlp;
3191
3192         spin_lock_irq(shost->host_lock);
3193         ndlp = __lpfc_findnode_did(vport, did);
3194         spin_unlock_irq(shost->host_lock);
3195         return ndlp;
3196 }
3197
3198 struct lpfc_nodelist *
3199 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
3200 {
3201         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3202         struct lpfc_nodelist *ndlp;
3203
3204         ndlp = lpfc_findnode_did(vport, did);
3205         if (!ndlp) {
3206                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
3207                     lpfc_rscn_payload_check(vport, did) == 0)
3208                         return NULL;
3209                 ndlp = (struct lpfc_nodelist *)
3210                      mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
3211                 if (!ndlp)
3212                         return NULL;
3213                 lpfc_nlp_init(vport, ndlp, did);
3214                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
3215                 spin_lock_irq(shost->host_lock);
3216                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3217                 spin_unlock_irq(shost->host_lock);
3218                 return ndlp;
3219         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
3220                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
3221                 if (!ndlp)
3222                         return NULL;
3223                 spin_lock_irq(shost->host_lock);
3224                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3225                 spin_unlock_irq(shost->host_lock);
3226                 return ndlp;
3227         }
3228
3229         if ((vport->fc_flag & FC_RSCN_MODE) &&
3230             !(vport->fc_flag & FC_NDISC_ACTIVE)) {
3231                 if (lpfc_rscn_payload_check(vport, did)) {
3232                         /* If we've already recieved a PLOGI from this NPort
3233                          * we don't need to try to discover it again.
3234                          */
3235                         if (ndlp->nlp_flag & NLP_RCV_PLOGI)
3236                                 return NULL;
3237
3238                         /* Since this node is marked for discovery,
3239                          * delay timeout is not needed.
3240                          */
3241                         lpfc_cancel_retry_delay_tmo(vport, ndlp);
3242                         spin_lock_irq(shost->host_lock);
3243                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3244                         spin_unlock_irq(shost->host_lock);
3245                 } else
3246                         ndlp = NULL;
3247         } else {
3248                 /* If we've already recieved a PLOGI from this NPort,
3249                  * or we are already in the process of discovery on it,
3250                  * we don't need to try to discover it again.
3251                  */
3252                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
3253                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
3254                     ndlp->nlp_flag & NLP_RCV_PLOGI)
3255                         return NULL;
3256                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
3257                 spin_lock_irq(shost->host_lock);
3258                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3259                 spin_unlock_irq(shost->host_lock);
3260         }
3261         return ndlp;
3262 }
3263
3264 /* Build a list of nodes to discover based on the loopmap */
3265 void
3266 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
3267 {
3268         struct lpfc_hba  *phba = vport->phba;
3269         int j;
3270         uint32_t alpa, index;
3271
3272         if (!lpfc_is_link_up(phba))
3273                 return;
3274
3275         if (phba->fc_topology != TOPOLOGY_LOOP)
3276                 return;
3277
3278         /* Check for loop map present or not */
3279         if (phba->alpa_map[0]) {
3280                 for (j = 1; j <= phba->alpa_map[0]; j++) {
3281                         alpa = phba->alpa_map[j];
3282                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
3283                                 continue;
3284                         lpfc_setup_disc_node(vport, alpa);
3285                 }
3286         } else {
3287                 /* No alpamap, so try all alpa's */
3288                 for (j = 0; j < FC_MAXLOOP; j++) {
3289                         /* If cfg_scan_down is set, start from highest
3290                          * ALPA (0xef) to lowest (0x1).
3291                          */
3292                         if (vport->cfg_scan_down)
3293                                 index = j;
3294                         else
3295                                 index = FC_MAXLOOP - j - 1;
3296                         alpa = lpfcAlpaArray[index];
3297                         if ((vport->fc_myDID & 0xff) == alpa)
3298                                 continue;
3299                         lpfc_setup_disc_node(vport, alpa);
3300                 }
3301         }
3302         return;
3303 }
3304
3305 void
3306 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
3307 {
3308         LPFC_MBOXQ_t *mbox;
3309         struct lpfc_sli *psli = &phba->sli;
3310         struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
3311         struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
3312         struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
3313         int  rc;
3314
3315         /*
3316          * if it's not a physical port or if we already send
3317          * clear_la then don't send it.
3318          */
3319         if ((phba->link_state >= LPFC_CLEAR_LA) ||
3320             (vport->port_type != LPFC_PHYSICAL_PORT) ||
3321                 (phba->sli_rev == LPFC_SLI_REV4))
3322                 return;
3323
3324                         /* Link up discovery */
3325         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
3326                 phba->link_state = LPFC_CLEAR_LA;
3327                 lpfc_clear_la(phba, mbox);
3328                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
3329                 mbox->vport = vport;
3330                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3331                 if (rc == MBX_NOT_FINISHED) {
3332                         mempool_free(mbox, phba->mbox_mem_pool);
3333                         lpfc_disc_flush_list(vport);
3334                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
3335                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
3336                         next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
3337                         phba->link_state = LPFC_HBA_ERROR;
3338                 }
3339         }
3340 }
3341
3342 /* Reg_vpi to tell firmware to resume normal operations */
3343 void
3344 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
3345 {
3346         LPFC_MBOXQ_t *regvpimbox;
3347
3348         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3349         if (regvpimbox) {
3350                 lpfc_reg_vpi(vport, regvpimbox);
3351                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
3352                 regvpimbox->vport = vport;
3353                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
3354                                         == MBX_NOT_FINISHED) {
3355                         mempool_free(regvpimbox, phba->mbox_mem_pool);
3356                 }
3357         }
3358 }
3359
3360 /* Start Link up / RSCN discovery on NPR nodes */
3361 void
3362 lpfc_disc_start(struct lpfc_vport *vport)
3363 {
3364         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3365         struct lpfc_hba  *phba = vport->phba;
3366         uint32_t num_sent;
3367         uint32_t clear_la_pending;
3368         int did_changed;
3369
3370         if (!lpfc_is_link_up(phba))
3371                 return;
3372
3373         if (phba->link_state == LPFC_CLEAR_LA)
3374                 clear_la_pending = 1;
3375         else
3376                 clear_la_pending = 0;
3377
3378         if (vport->port_state < LPFC_VPORT_READY)
3379                 vport->port_state = LPFC_DISC_AUTH;
3380
3381         lpfc_set_disctmo(vport);
3382
3383         if (vport->fc_prevDID == vport->fc_myDID)
3384                 did_changed = 0;
3385         else
3386                 did_changed = 1;
3387
3388         vport->fc_prevDID = vport->fc_myDID;
3389         vport->num_disc_nodes = 0;
3390
3391         /* Start Discovery state <hba_state> */
3392         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3393                          "0202 Start Discovery hba state x%x "
3394                          "Data: x%x x%x x%x\n",
3395                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
3396                          vport->fc_adisc_cnt);
3397
3398         /* First do ADISCs - if any */
3399         num_sent = lpfc_els_disc_adisc(vport);
3400
3401         if (num_sent)
3402                 return;
3403
3404         /*
3405          * For SLI3, cmpl_reg_vpi will set port_state to READY, and
3406          * continue discovery.
3407          */
3408         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
3409             !(vport->fc_flag & FC_PT2PT) &&
3410             !(vport->fc_flag & FC_RSCN_MODE) &&
3411             (phba->sli_rev < LPFC_SLI_REV4)) {
3412                 lpfc_issue_reg_vpi(phba, vport);
3413                 return;
3414         }
3415
3416         /*
3417          * For SLI2, we need to set port_state to READY and continue
3418          * discovery.
3419          */
3420         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
3421                 /* If we get here, there is nothing to ADISC */
3422                 if (vport->port_type == LPFC_PHYSICAL_PORT)
3423                         lpfc_issue_clear_la(phba, vport);
3424
3425                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
3426                         vport->num_disc_nodes = 0;
3427                         /* go thru NPR nodes and issue ELS PLOGIs */
3428                         if (vport->fc_npr_cnt)
3429                                 lpfc_els_disc_plogi(vport);
3430
3431                         if (!vport->num_disc_nodes) {
3432                                 spin_lock_irq(shost->host_lock);
3433                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
3434                                 spin_unlock_irq(shost->host_lock);
3435                                 lpfc_can_disctmo(vport);
3436                         }
3437                 }
3438                 vport->port_state = LPFC_VPORT_READY;
3439         } else {
3440                 /* Next do PLOGIs - if any */
3441                 num_sent = lpfc_els_disc_plogi(vport);
3442
3443                 if (num_sent)
3444                         return;
3445
3446                 if (vport->fc_flag & FC_RSCN_MODE) {
3447                         /* Check to see if more RSCNs came in while we
3448                          * were processing this one.
3449                          */
3450                         if ((vport->fc_rscn_id_cnt == 0) &&
3451                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
3452                                 spin_lock_irq(shost->host_lock);
3453                                 vport->fc_flag &= ~FC_RSCN_MODE;
3454                                 spin_unlock_irq(shost->host_lock);
3455                                 lpfc_can_disctmo(vport);
3456                         } else
3457                                 lpfc_els_handle_rscn(vport);
3458                 }
3459         }
3460         return;
3461 }
3462
3463 /*
3464  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
3465  *  ring the match the sppecified nodelist.
3466  */
3467 static void
3468 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
3469 {
3470         LIST_HEAD(completions);
3471         struct lpfc_sli *psli;
3472         IOCB_t     *icmd;
3473         struct lpfc_iocbq    *iocb, *next_iocb;
3474         struct lpfc_sli_ring *pring;
3475
3476         psli = &phba->sli;
3477         pring = &psli->ring[LPFC_ELS_RING];
3478
3479         /* Error matching iocb on txq or txcmplq
3480          * First check the txq.
3481          */
3482         spin_lock_irq(&phba->hbalock);
3483         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
3484                 if (iocb->context1 != ndlp) {
3485                         continue;
3486                 }
3487                 icmd = &iocb->iocb;
3488                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
3489                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
3490
3491                         list_move_tail(&iocb->list, &completions);
3492                         pring->txq_cnt--;
3493                 }
3494         }
3495
3496         /* Next check the txcmplq */
3497         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
3498                 if (iocb->context1 != ndlp) {
3499                         continue;
3500                 }
3501                 icmd = &iocb->iocb;
3502                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
3503                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
3504                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
3505                 }
3506         }
3507         spin_unlock_irq(&phba->hbalock);
3508
3509         /* Cancel all the IOCBs from the completions list */
3510         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
3511                               IOERR_SLI_ABORTED);
3512 }
3513
3514 static void
3515 lpfc_disc_flush_list(struct lpfc_vport *vport)
3516 {
3517         struct lpfc_nodelist *ndlp, *next_ndlp;
3518         struct lpfc_hba *phba = vport->phba;
3519
3520         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
3521                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
3522                                          nlp_listp) {
3523                         if (!NLP_CHK_NODE_ACT(ndlp))
3524                                 continue;
3525                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
3526                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
3527                                 lpfc_free_tx(phba, ndlp);
3528                         }
3529                 }
3530         }
3531 }
3532
3533 void
3534 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
3535 {
3536         lpfc_els_flush_rscn(vport);
3537         lpfc_els_flush_cmd(vport);
3538         lpfc_disc_flush_list(vport);
3539 }
3540
3541 /*****************************************************************************/
3542 /*
3543  * NAME:     lpfc_disc_timeout
3544  *
3545  * FUNCTION: Fibre Channel driver discovery timeout routine.
3546  *
3547  * EXECUTION ENVIRONMENT: interrupt only
3548  *
3549  * CALLED FROM:
3550  *      Timer function
3551  *
3552  * RETURNS:
3553  *      none
3554  */
3555 /*****************************************************************************/
3556 void
3557 lpfc_disc_timeout(unsigned long ptr)
3558 {
3559         struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
3560         struct lpfc_hba   *phba = vport->phba;
3561         uint32_t tmo_posted;
3562         unsigned long flags = 0;
3563
3564         if (unlikely(!phba))
3565                 return;
3566
3567         spin_lock_irqsave(&vport->work_port_lock, flags);
3568         tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
3569         if (!tmo_posted)
3570                 vport->work_port_events |= WORKER_DISC_TMO;
3571         spin_unlock_irqrestore(&vport->work_port_lock, flags);
3572
3573         if (!tmo_posted)
3574                 lpfc_worker_wake_up(phba);
3575         return;
3576 }
3577
3578 static void
3579 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
3580 {
3581         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3582         struct lpfc_hba  *phba = vport->phba;
3583         struct lpfc_sli  *psli = &phba->sli;
3584         struct lpfc_nodelist *ndlp, *next_ndlp;
3585         LPFC_MBOXQ_t *initlinkmbox;
3586         int rc, clrlaerr = 0;
3587
3588         if (!(vport->fc_flag & FC_DISC_TMO))
3589                 return;
3590
3591         spin_lock_irq(shost->host_lock);
3592         vport->fc_flag &= ~FC_DISC_TMO;
3593         spin_unlock_irq(shost->host_lock);
3594
3595         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3596                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
3597                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
3598
3599         switch (vport->port_state) {
3600
3601         case LPFC_LOCAL_CFG_LINK:
3602         /* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
3603          * FAN
3604          */
3605                                 /* FAN timeout */
3606                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
3607                                  "0221 FAN timeout\n");
3608                 /* Start discovery by sending FLOGI, clean up old rpis */
3609                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
3610                                          nlp_listp) {
3611                         if (!NLP_CHK_NODE_ACT(ndlp))
3612                                 continue;
3613                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
3614                                 continue;
3615                         if (ndlp->nlp_type & NLP_FABRIC) {
3616                                 /* Clean up the ndlp on Fabric connections */
3617                                 lpfc_drop_node(vport, ndlp);
3618
3619                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
3620                                 /* Fail outstanding IO now since device
3621                                  * is marked for PLOGI.
3622                                  */
3623                                 lpfc_unreg_rpi(vport, ndlp);
3624                         }
3625                 }
3626                 if (vport->port_state != LPFC_FLOGI) {
3627                         lpfc_initial_flogi(vport);
3628                         return;
3629                 }
3630                 break;
3631
3632         case LPFC_FDISC:
3633         case LPFC_FLOGI:
3634         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
3635                 /* Initial FLOGI timeout */
3636                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3637                                  "0222 Initial %s timeout\n",
3638                                  vport->vpi ? "FDISC" : "FLOGI");
3639
3640                 /* Assume no Fabric and go on with discovery.
3641                  * Check for outstanding ELS FLOGI to abort.
3642                  */
3643
3644                 /* FLOGI failed, so just use loop map to make discovery list */
3645                 lpfc_disc_list_loopmap(vport);
3646
3647                 /* Start discovery */
3648                 lpfc_disc_start(vport);
3649                 break;
3650
3651         case LPFC_FABRIC_CFG_LINK:
3652         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
3653            NameServer login */
3654                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3655                                  "0223 Timeout while waiting for "
3656                                  "NameServer login\n");
3657                 /* Next look for NameServer ndlp */
3658                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
3659                 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
3660                         lpfc_els_abort(phba, ndlp);
3661
3662                 /* ReStart discovery */
3663                 goto restart_disc;
3664
3665         case LPFC_NS_QRY:
3666         /* Check for wait for NameServer Rsp timeout */
3667                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3668                                  "0224 NameServer Query timeout "
3669                                  "Data: x%x x%x\n",
3670                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
3671
3672                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
3673                         /* Try it one more time */
3674                         vport->fc_ns_retry++;
3675                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
3676                                          vport->fc_ns_retry, 0);
3677                         if (rc == 0)
3678                                 break;
3679                 }
3680                 vport->fc_ns_retry = 0;
3681
3682 restart_disc:
3683                 /*
3684                  * Discovery is over.
3685                  * set port_state to PORT_READY if SLI2.
3686                  * cmpl_reg_vpi will set port_state to READY for SLI3.
3687                  */
3688                 if (phba->sli_rev < LPFC_SLI_REV4) {
3689                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
3690                                 lpfc_issue_reg_vpi(phba, vport);
3691                         else  { /* NPIV Not enabled */
3692                                 lpfc_issue_clear_la(phba, vport);
3693                                 vport->port_state = LPFC_VPORT_READY;
3694                         }
3695                 }
3696
3697                 /* Setup and issue mailbox INITIALIZE LINK command */
3698                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3699                 if (!initlinkmbox) {
3700                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3701                                          "0206 Device Discovery "
3702                                          "completion error\n");
3703                         phba->link_state = LPFC_HBA_ERROR;
3704                         break;
3705                 }
3706
3707                 lpfc_linkdown(phba);
3708                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
3709                                phba->cfg_link_speed);
3710                 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
3711                 initlinkmbox->vport = vport;
3712                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3713                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
3714                 lpfc_set_loopback_flag(phba);
3715                 if (rc == MBX_NOT_FINISHED)
3716                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
3717
3718                 break;
3719
3720         case LPFC_DISC_AUTH:
3721         /* Node Authentication timeout */
3722                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3723                                  "0227 Node Authentication timeout\n");
3724                 lpfc_disc_flush_list(vport);
3725
3726                 /*
3727                  * set port_state to PORT_READY if SLI2.
3728                  * cmpl_reg_vpi will set port_state to READY for SLI3.
3729                  */
3730                 if (phba->sli_rev < LPFC_SLI_REV4) {
3731                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
3732                                 lpfc_issue_reg_vpi(phba, vport);
3733                         else  { /* NPIV Not enabled */
3734                                 lpfc_issue_clear_la(phba, vport);
3735                                 vport->port_state = LPFC_VPORT_READY;
3736                         }
3737                 }
3738                 break;
3739
3740         case LPFC_VPORT_READY:
3741                 if (vport->fc_flag & FC_RSCN_MODE) {
3742                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3743                                          "0231 RSCN timeout Data: x%x "
3744                                          "x%x\n",
3745                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
3746
3747                         /* Cleanup any outstanding ELS commands */
3748                         lpfc_els_flush_cmd(vport);
3749
3750                         lpfc_els_flush_rscn(vport);
3751                         lpfc_disc_flush_list(vport);
3752                 }
3753                 break;
3754
3755         default:
3756                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3757                                  "0273 Unexpected discovery timeout, "
3758                                  "vport State x%x\n", vport->port_state);
3759                 break;
3760         }
3761
3762         switch (phba->link_state) {
3763         case LPFC_CLEAR_LA:
3764                                 /* CLEAR LA timeout */
3765                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3766                                  "0228 CLEAR LA timeout\n");
3767                 clrlaerr = 1;
3768                 break;
3769
3770         case LPFC_LINK_UP:
3771                 lpfc_issue_clear_la(phba, vport);
3772                 /* Drop thru */
3773         case LPFC_LINK_UNKNOWN:
3774         case LPFC_WARM_START:
3775         case LPFC_INIT_START:
3776         case LPFC_INIT_MBX_CMDS:
3777         case LPFC_LINK_DOWN:
3778         case LPFC_HBA_ERROR:
3779                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3780                                  "0230 Unexpected timeout, hba link "
3781                                  "state x%x\n", phba->link_state);
3782                 clrlaerr = 1;
3783                 break;
3784
3785         case LPFC_HBA_READY:
3786                 break;
3787         }
3788
3789         if (clrlaerr) {
3790                 lpfc_disc_flush_list(vport);
3791                 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
3792                 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
3793                 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
3794                 vport->port_state = LPFC_VPORT_READY;
3795         }
3796
3797         return;
3798 }
3799
3800 /*
3801  * This routine handles processing a NameServer REG_LOGIN mailbox
3802  * command upon completion. It is setup in the LPFC_MBOXQ
3803  * as the completion routine when the command is
3804  * handed off to the SLI layer.
3805  */
3806 void
3807 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3808 {
3809         MAILBOX_t *mb = &pmb->u.mb;
3810         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
3811         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3812         struct lpfc_vport    *vport = pmb->vport;
3813
3814         pmb->context1 = NULL;
3815
3816         ndlp->nlp_rpi = mb->un.varWords[0];
3817         ndlp->nlp_flag |= NLP_RPI_VALID;
3818         ndlp->nlp_type |= NLP_FABRIC;
3819         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3820
3821         /*
3822          * Start issuing Fabric-Device Management Interface (FDMI) command to
3823          * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
3824          * fdmi-on=2 (supporting RPA/hostnmae)
3825          */
3826
3827         if (vport->cfg_fdmi_on == 1)
3828                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
3829         else
3830                 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
3831
3832         /* decrement the node reference count held for this callback
3833          * function.
3834          */
3835         lpfc_nlp_put(ndlp);
3836         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3837         kfree(mp);
3838         mempool_free(pmb, phba->mbox_mem_pool);
3839
3840         return;
3841 }
3842
3843 static int
3844 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
3845 {
3846         uint16_t *rpi = param;
3847
3848         return ndlp->nlp_rpi == *rpi;
3849 }
3850
3851 static int
3852 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
3853 {
3854         return memcmp(&ndlp->nlp_portname, param,
3855                       sizeof(ndlp->nlp_portname)) == 0;
3856 }
3857
3858 static struct lpfc_nodelist *
3859 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
3860 {
3861         struct lpfc_nodelist *ndlp;
3862
3863         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
3864                 if (filter(ndlp, param))
3865                         return ndlp;
3866         }
3867         return NULL;
3868 }
3869
3870 /*
3871  * This routine looks up the ndlp lists for the given RPI. If rpi found it
3872  * returns the node list element pointer else return NULL.
3873  */
3874 struct lpfc_nodelist *
3875 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
3876 {
3877         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
3878 }
3879
3880 /*
3881  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
3882  * returns the node element list pointer else return NULL.
3883  */
3884 struct lpfc_nodelist *
3885 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
3886 {
3887         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3888         struct lpfc_nodelist *ndlp;
3889
3890         spin_lock_irq(shost->host_lock);
3891         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
3892         spin_unlock_irq(shost->host_lock);
3893         return ndlp;
3894 }
3895
3896 void
3897 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3898               uint32_t did)
3899 {
3900         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
3901
3902         lpfc_initialize_node(vport, ndlp, did);
3903         INIT_LIST_HEAD(&ndlp->nlp_listp);
3904
3905         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
3906                 "node init:       did:x%x",
3907                 ndlp->nlp_DID, 0, 0);
3908
3909         return;
3910 }
3911
3912 /* This routine releases all resources associated with a specifc NPort's ndlp
3913  * and mempool_free's the nodelist.
3914  */
3915 static void
3916 lpfc_nlp_release(struct kref *kref)
3917 {
3918         struct lpfc_hba *phba;
3919         unsigned long flags;
3920         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
3921                                                   kref);
3922
3923         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3924                 "node release:    did:x%x flg:x%x type:x%x",
3925                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3926
3927         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
3928                         "0279 lpfc_nlp_release: ndlp:x%p "
3929                         "usgmap:x%x refcnt:%d\n",
3930                         (void *)ndlp, ndlp->nlp_usg_map,
3931                         atomic_read(&ndlp->kref.refcount));
3932
3933         /* remove ndlp from action. */
3934         lpfc_nlp_remove(ndlp->vport, ndlp);
3935
3936         /* clear the ndlp active flag for all release cases */
3937         phba = ndlp->phba;
3938         spin_lock_irqsave(&phba->ndlp_lock, flags);
3939         NLP_CLR_NODE_ACT(ndlp);
3940         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3941
3942         /* free ndlp memory for final ndlp release */
3943         if (NLP_CHK_FREE_REQ(ndlp)) {
3944                 kfree(ndlp->lat_data);
3945                 mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
3946         }
3947 }
3948
3949 /* This routine bumps the reference count for a ndlp structure to ensure
3950  * that one discovery thread won't free a ndlp while another discovery thread
3951  * is using it.
3952  */
3953 struct lpfc_nodelist *
3954 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
3955 {
3956         struct lpfc_hba *phba;
3957         unsigned long flags;
3958
3959         if (ndlp) {
3960                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3961                         "node get:        did:x%x flg:x%x refcnt:x%x",
3962                         ndlp->nlp_DID, ndlp->nlp_flag,
3963                         atomic_read(&ndlp->kref.refcount));
3964                 /* The check of ndlp usage to prevent incrementing the
3965                  * ndlp reference count that is in the process of being
3966                  * released.
3967                  */
3968                 phba = ndlp->phba;
3969                 spin_lock_irqsave(&phba->ndlp_lock, flags);
3970                 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
3971                         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3972                         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3973                                 "0276 lpfc_nlp_get: ndlp:x%p "
3974                                 "usgmap:x%x refcnt:%d\n",
3975                                 (void *)ndlp, ndlp->nlp_usg_map,
3976                                 atomic_read(&ndlp->kref.refcount));
3977                         return NULL;
3978                 } else
3979                         kref_get(&ndlp->kref);
3980                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3981         }
3982         return ndlp;
3983 }
3984
3985 /* This routine decrements the reference count for a ndlp structure. If the
3986  * count goes to 0, this indicates the the associated nodelist should be
3987  * freed. Returning 1 indicates the ndlp resource has been released; on the
3988  * other hand, returning 0 indicates the ndlp resource has not been released
3989  * yet.
3990  */
3991 int
3992 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
3993 {
3994         struct lpfc_hba *phba;
3995         unsigned long flags;
3996
3997         if (!ndlp)
3998                 return 1;
3999
4000         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4001         "node put:        did:x%x flg:x%x refcnt:x%x",
4002                 ndlp->nlp_DID, ndlp->nlp_flag,
4003                 atomic_read(&ndlp->kref.refcount));
4004         phba = ndlp->phba;
4005         spin_lock_irqsave(&phba->ndlp_lock, flags);
4006         /* Check the ndlp memory free acknowledge flag to avoid the
4007          * possible race condition that kref_put got invoked again
4008          * after previous one has done ndlp memory free.
4009          */
4010         if (NLP_CHK_FREE_ACK(ndlp)) {
4011                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4012                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
4013                                 "0274 lpfc_nlp_put: ndlp:x%p "
4014                                 "usgmap:x%x refcnt:%d\n",
4015                                 (void *)ndlp, ndlp->nlp_usg_map,
4016                                 atomic_read(&ndlp->kref.refcount));
4017                 return 1;
4018         }
4019         /* Check the ndlp inactivate log flag to avoid the possible
4020          * race condition that kref_put got invoked again after ndlp
4021          * is already in inactivating state.
4022          */
4023         if (NLP_CHK_IACT_REQ(ndlp)) {
4024                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4025                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
4026                                 "0275 lpfc_nlp_put: ndlp:x%p "
4027                                 "usgmap:x%x refcnt:%d\n",
4028                                 (void *)ndlp, ndlp->nlp_usg_map,
4029                                 atomic_read(&ndlp->kref.refcount));
4030                 return 1;
4031         }
4032         /* For last put, mark the ndlp usage flags to make sure no
4033          * other kref_get and kref_put on the same ndlp shall get
4034          * in between the process when the final kref_put has been
4035          * invoked on this ndlp.
4036          */
4037         if (atomic_read(&ndlp->kref.refcount) == 1) {
4038                 /* Indicate ndlp is put to inactive state. */
4039                 NLP_SET_IACT_REQ(ndlp);
4040                 /* Acknowledge ndlp memory free has been seen. */
4041                 if (NLP_CHK_FREE_REQ(ndlp))
4042                         NLP_SET_FREE_ACK(ndlp);
4043         }
4044         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4045         /* Note, the kref_put returns 1 when decrementing a reference
4046          * count that was 1, it invokes the release callback function,
4047          * but it still left the reference count as 1 (not actually
4048          * performs the last decrementation). Otherwise, it actually
4049          * decrements the reference count and returns 0.
4050          */
4051         return kref_put(&ndlp->kref, lpfc_nlp_release);
4052 }
4053
4054 /* This routine free's the specified nodelist if it is not in use
4055  * by any other discovery thread. This routine returns 1 if the
4056  * ndlp has been freed. A return value of 0 indicates the ndlp is
4057  * not yet been released.
4058  */
4059 int
4060 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
4061 {
4062         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4063                 "node not used:   did:x%x flg:x%x refcnt:x%x",
4064                 ndlp->nlp_DID, ndlp->nlp_flag,
4065                 atomic_read(&ndlp->kref.refcount));
4066         if (atomic_read(&ndlp->kref.refcount) == 1)
4067                 if (lpfc_nlp_put(ndlp))
4068                         return 1;
4069         return 0;
4070 }
4071
4072 /**
4073  * lpfc_fcf_inuse - Check if FCF can be unregistered.
4074  * @phba: Pointer to hba context object.
4075  *
4076  * This function iterate through all FC nodes associated
4077  * will all vports to check if there is any node with
4078  * fc_rports associated with it. If there is an fc_rport
4079  * associated with the node, then the node is either in
4080  * discovered state or its devloss_timer is pending.
4081  */
4082 static int
4083 lpfc_fcf_inuse(struct lpfc_hba *phba)
4084 {
4085         struct lpfc_vport **vports;
4086         int i, ret = 0;
4087         struct lpfc_nodelist *ndlp;
4088         struct Scsi_Host  *shost;
4089
4090         vports = lpfc_create_vport_work_array(phba);
4091
4092         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4093                 shost = lpfc_shost_from_vport(vports[i]);
4094                 spin_lock_irq(shost->host_lock);
4095                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
4096                         if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport &&
4097                           (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
4098                                 ret = 1;
4099                                 spin_unlock_irq(shost->host_lock);
4100                                 goto out;
4101                         }
4102                 }
4103                 spin_unlock_irq(shost->host_lock);
4104         }
4105 out:
4106         lpfc_destroy_vport_work_array(phba, vports);
4107         return ret;
4108 }
4109
4110 /**
4111  * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
4112  * @phba: Pointer to hba context object.
4113  * @mboxq: Pointer to mailbox object.
4114  *
4115  * This function frees memory associated with the mailbox command.
4116  */
4117 static void
4118 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
4119 {
4120         struct lpfc_vport *vport = mboxq->vport;
4121
4122         if (mboxq->u.mb.mbxStatus) {
4123                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4124                         "2555 UNREG_VFI mbxStatus error x%x "
4125                         "HBA state x%x\n",
4126                         mboxq->u.mb.mbxStatus, vport->port_state);
4127         }
4128         mempool_free(mboxq, phba->mbox_mem_pool);
4129         return;
4130 }
4131
4132 /**
4133  * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
4134  * @phba: Pointer to hba context object.
4135  * @mboxq: Pointer to mailbox object.
4136  *
4137  * This function frees memory associated with the mailbox command.
4138  */
4139 static void
4140 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
4141 {
4142         struct lpfc_vport *vport = mboxq->vport;
4143
4144         if (mboxq->u.mb.mbxStatus) {
4145                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4146                         "2550 UNREG_FCFI mbxStatus error x%x "
4147                         "HBA state x%x\n",
4148                         mboxq->u.mb.mbxStatus, vport->port_state);
4149         }
4150         mempool_free(mboxq, phba->mbox_mem_pool);
4151         return;
4152 }
4153
4154 /**
4155  * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
4156  * @phba: Pointer to hba context object.
4157  *
4158  * This function check if there are any connected remote port for the FCF and
4159  * if all the devices are disconnected, this function unregister FCFI.
4160  * This function also tries to use another FCF for discovery.
4161  */
4162 void
4163 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
4164 {
4165         LPFC_MBOXQ_t *mbox;
4166         int rc;
4167         struct lpfc_vport **vports;
4168         int i;
4169
4170         spin_lock_irq(&phba->hbalock);
4171         /*
4172          * If HBA is not running in FIP mode or
4173          * If HBA does not support FCoE or
4174          * If FCF is not registered.
4175          * do nothing.
4176          */
4177         if (!(phba->hba_flag & HBA_FCOE_SUPPORT) ||
4178                 !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
4179                 (phba->cfg_enable_fip == 0)) {
4180                 spin_unlock_irq(&phba->hbalock);
4181                 return;
4182         }
4183         spin_unlock_irq(&phba->hbalock);
4184
4185         if (lpfc_fcf_inuse(phba))
4186                 return;
4187
4188
4189         /* Unregister VPIs */
4190         vports = lpfc_create_vport_work_array(phba);
4191         if (vports &&
4192                 (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
4193                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4194                         lpfc_mbx_unreg_vpi(vports[i]);
4195                         vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
4196                         vports[i]->vfi_state &= ~LPFC_VFI_REGISTERED;
4197                 }
4198         lpfc_destroy_vport_work_array(phba, vports);
4199
4200         /* Unregister VFI */
4201         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4202         if (!mbox) {
4203                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4204                         "2556 UNREG_VFI mbox allocation failed"
4205                         "HBA state x%x\n",
4206                         phba->pport->port_state);
4207                 return;
4208         }
4209
4210         lpfc_unreg_vfi(mbox, phba->pport->vfi);
4211         mbox->vport = phba->pport;
4212         mbox->mbox_cmpl = lpfc_unregister_vfi_cmpl;
4213
4214         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4215         if (rc == MBX_NOT_FINISHED) {
4216                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4217                         "2557 UNREG_VFI issue mbox failed rc x%x "
4218                         "HBA state x%x\n",
4219                         rc, phba->pport->port_state);
4220                 mempool_free(mbox, phba->mbox_mem_pool);
4221                 return;
4222         }
4223
4224         /* Unregister FCF */
4225         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4226         if (!mbox) {
4227                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4228                         "2551 UNREG_FCFI mbox allocation failed"
4229                         "HBA state x%x\n",
4230                         phba->pport->port_state);
4231                 return;
4232         }
4233
4234         lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
4235         mbox->vport = phba->pport;
4236         mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
4237         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4238
4239         if (rc == MBX_NOT_FINISHED) {
4240                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4241                         "2552 UNREG_FCFI issue mbox failed rc x%x "
4242                         "HBA state x%x\n",
4243                         rc, phba->pport->port_state);
4244                 mempool_free(mbox, phba->mbox_mem_pool);
4245                 return;
4246         }
4247
4248         spin_lock_irq(&phba->hbalock);
4249         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_REGISTERED |
4250                 FCF_DISCOVERED | FCF_BOOT_ENABLE | FCF_IN_USE |
4251                 FCF_VALID_VLAN);
4252         spin_unlock_irq(&phba->hbalock);
4253
4254         /*
4255          * If driver is not unloading, check if there is any other
4256          * FCF record that can be used for discovery.
4257          */
4258         if ((phba->pport->load_flag & FC_UNLOADING) ||
4259                 (phba->link_state < LPFC_LINK_UP))
4260                 return;
4261
4262         rc = lpfc_sli4_read_fcf_record(phba, LPFC_FCOE_FCF_GET_FIRST);
4263
4264         if (rc)
4265                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4266                         "2553 lpfc_unregister_unused_fcf failed to read FCF"
4267                         " record HBA state x%x\n",
4268                         phba->pport->port_state);
4269 }
4270
4271 /**
4272  * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
4273  * @phba: Pointer to hba context object.
4274  * @buff: Buffer containing the FCF connection table as in the config
4275  *         region.
4276  * This function create driver data structure for the FCF connection
4277  * record table read from config region 23.
4278  */
4279 static void
4280 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
4281         uint8_t *buff)
4282 {
4283         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
4284         struct lpfc_fcf_conn_hdr *conn_hdr;
4285         struct lpfc_fcf_conn_rec *conn_rec;
4286         uint32_t record_count;
4287         int i;
4288
4289         /* Free the current connect table */
4290         list_for_each_entry_safe(conn_entry, next_conn_entry,
4291                 &phba->fcf_conn_rec_list, list)
4292                 kfree(conn_entry);
4293
4294         conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
4295         record_count = conn_hdr->length * sizeof(uint32_t)/
4296                 sizeof(struct lpfc_fcf_conn_rec);
4297
4298         conn_rec = (struct lpfc_fcf_conn_rec *)
4299                 (buff + sizeof(struct lpfc_fcf_conn_hdr));
4300
4301         for (i = 0; i < record_count; i++) {
4302                 if (!(conn_rec[i].flags & FCFCNCT_VALID))
4303                         continue;
4304                 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
4305                         GFP_KERNEL);
4306                 if (!conn_entry) {
4307                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4308                                 "2566 Failed to allocate connection"
4309                                 " table entry\n");
4310                         return;
4311                 }
4312
4313                 memcpy(&conn_entry->conn_rec, &conn_rec[i],
4314                         sizeof(struct lpfc_fcf_conn_rec));
4315                 conn_entry->conn_rec.vlan_tag =
4316                         le16_to_cpu(conn_entry->conn_rec.vlan_tag) & 0xFFF;
4317                 conn_entry->conn_rec.flags =
4318                         le16_to_cpu(conn_entry->conn_rec.flags);
4319                 list_add_tail(&conn_entry->list,
4320                         &phba->fcf_conn_rec_list);
4321         }
4322 }
4323
4324 /**
4325  * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
4326  * @phba: Pointer to hba context object.
4327  * @buff: Buffer containing the FCoE parameter data structure.
4328  *
4329  *  This function update driver data structure with config
4330  *  parameters read from config region 23.
4331  */
4332 static void
4333 lpfc_read_fcoe_param(struct lpfc_hba *phba,
4334                         uint8_t *buff)
4335 {
4336         struct lpfc_fip_param_hdr *fcoe_param_hdr;
4337         struct lpfc_fcoe_params *fcoe_param;
4338
4339         fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
4340                 buff;
4341         fcoe_param = (struct lpfc_fcoe_params *)
4342                 buff + sizeof(struct lpfc_fip_param_hdr);
4343
4344         if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
4345                 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
4346                 return;
4347
4348         if (bf_get(lpfc_fip_param_hdr_fipp_mode, fcoe_param_hdr) ==
4349                         FIPP_MODE_ON)
4350                 phba->cfg_enable_fip = 1;
4351
4352         if (bf_get(lpfc_fip_param_hdr_fipp_mode, fcoe_param_hdr) ==
4353                 FIPP_MODE_OFF)
4354                 phba->cfg_enable_fip = 0;
4355
4356         if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
4357                 phba->valid_vlan = 1;
4358                 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
4359                         0xFFF;
4360         }
4361
4362         phba->fc_map[0] = fcoe_param->fc_map[0];
4363         phba->fc_map[1] = fcoe_param->fc_map[1];
4364         phba->fc_map[2] = fcoe_param->fc_map[2];
4365         return;
4366 }
4367
4368 /**
4369  * lpfc_get_rec_conf23 - Get a record type in config region data.
4370  * @buff: Buffer containing config region 23 data.
4371  * @size: Size of the data buffer.
4372  * @rec_type: Record type to be searched.
4373  *
4374  * This function searches config region data to find the begining
4375  * of the record specified by record_type. If record found, this
4376  * function return pointer to the record else return NULL.
4377  */
4378 static uint8_t *
4379 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
4380 {
4381         uint32_t offset = 0, rec_length;
4382
4383         if ((buff[0] == LPFC_REGION23_LAST_REC) ||
4384                 (size < sizeof(uint32_t)))
4385                 return NULL;
4386
4387         rec_length = buff[offset + 1];
4388
4389         /*
4390          * One TLV record has one word header and number of data words
4391          * specified in the rec_length field of the record header.
4392          */
4393         while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
4394                 <= size) {
4395                 if (buff[offset] == rec_type)
4396                         return &buff[offset];
4397
4398                 if (buff[offset] == LPFC_REGION23_LAST_REC)
4399                         return NULL;
4400
4401                 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
4402                 rec_length = buff[offset + 1];
4403         }
4404         return NULL;
4405 }
4406
4407 /**
4408  * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
4409  * @phba: Pointer to lpfc_hba data structure.
4410  * @buff: Buffer containing config region 23 data.
4411  * @size: Size of the data buffer.
4412  *
4413  * This fuction parse the FCoE config parameters in config region 23 and
4414  * populate driver data structure with the parameters.
4415  */
4416 void
4417 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
4418                 uint8_t *buff,
4419                 uint32_t size)
4420 {
4421         uint32_t offset = 0, rec_length;
4422         uint8_t *rec_ptr;
4423
4424         /*
4425          * If data size is less than 2 words signature and version cannot be
4426          * verified.
4427          */
4428         if (size < 2*sizeof(uint32_t))
4429                 return;
4430
4431         /* Check the region signature first */
4432         if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
4433                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4434                         "2567 Config region 23 has bad signature\n");
4435                 return;
4436         }
4437
4438         offset += 4;
4439
4440         /* Check the data structure version */
4441         if (buff[offset] != LPFC_REGION23_VERSION) {
4442                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4443                         "2568 Config region 23 has bad version\n");
4444                 return;
4445         }
4446         offset += 4;
4447
4448         rec_length = buff[offset + 1];
4449
4450         /* Read FCoE param record */
4451         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
4452                         size - offset, FCOE_PARAM_TYPE);
4453         if (rec_ptr)
4454                 lpfc_read_fcoe_param(phba, rec_ptr);
4455
4456         /* Read FCF connection table */
4457         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
4458                 size - offset, FCOE_CONN_TBL_TYPE);
4459         if (rec_ptr)
4460                 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
4461
4462 }